synclink_cs.c revision 9e98966c7bb94355689478bc84cc3e0c190f977e
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/drivers/char/pcmcia/synclink_cs.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum * $Id: synclink_cs.c,v 4.34 2005/09/08 13:20:54 paulkf Exp $ 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Device driver for Microgate SyncLink PC Card 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * multiprotocol serial adapter. 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * written by Paul Fulghum for Microgate Corporation 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * paulkf@microgate.com 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Microgate and SyncLink are trademarks of Microgate Corporation 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This code is released under the GNU General Public License (GPL) 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * OF THE POSSIBILITY OF SUCH DAMAGE. 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VERSION(ver,rel,seq) (((ver)<<16) | ((rel)<<8) | (seq)) 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if defined(__i386__) 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define BREAKPOINT() asm(" int $3"); 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define BREAKPOINT() { } 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MAX_DEVICE_COUNT 4 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/signal.h> 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sched.h> 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/timer.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/time.h> 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_flip.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/serial.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/major.h> 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/string.h> 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/fcntl.h> 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ptrace.h> 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h> 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/netdevice.h> 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/vmalloc.h> 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioctl.h> 603dd1247f4dee214a92b42e17818703ea71233288Robert P. J. Day#include <linux/synclink.h> 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/irq.h> 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/dma.h> 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/bitops.h> 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/types.h> 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/termios.h> 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/workqueue.h> 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/hdlc.h> 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <pcmcia/cs_types.h> 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <pcmcia/cs.h> 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <pcmcia/cistpl.h> 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <pcmcia/cisreg.h> 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <pcmcia/ds.h> 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 78af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINK_CS_MODULE)) 79af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#define SYNCLINK_GENERIC_HDLC 1 80af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#else 81af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#define SYNCLINK_GENERIC_HDLC 0 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GET_USER(error,value,addr) error = get_user(value,addr) 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define COPY_FROM_USER(error,dest,src,size) error = copy_from_user(dest,src,size) ? -EFAULT : 0 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PUT_USER(error,value,addr) error = put_user(value,addr) 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define COPY_TO_USER(error,dest,src,size) error = copy_to_user(dest,src,size) ? -EFAULT : 0 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic MGSL_PARAMS default_params = { 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSL_MODE_HDLC, /* unsigned long mode */ 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0, /* unsigned char loopback; */ 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_UNDERRUN_ABORT15, /* unsigned short flags; */ 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_ENCODING_NRZI_SPACE, /* unsigned char encoding; */ 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0, /* unsigned long clock_speed; */ 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0xff, /* unsigned char addr_filter; */ 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_CRC_16_CCITT, /* unsigned short crc_type; */ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_PREAMBLE_LENGTH_8BITS, /* unsigned char preamble_length; */ 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_PREAMBLE_PATTERN_NONE, /* unsigned char preamble; */ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9600, /* unsigned long data_rate; */ 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8, /* unsigned char data_bits; */ 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1, /* unsigned char stop_bits; */ 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ASYNC_PARITY_NONE /* unsigned char parity; */ 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstypedef struct 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count; 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char status; 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char data[1]; 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} RXBUF; 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The queue of BH actions to be performed */ 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BH_RECEIVE 1 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BH_TRANSMIT 2 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BH_STATUS 4 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IO_PIN_SHUTDOWN_LIMIT 100 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK)) 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct _input_signal_events { 125d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik int ri_up; 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ri_down; 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dsr_up; 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dsr_down; 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dcd_up; 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dcd_down; 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cts_up; 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cts_down; 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Device instance data structure 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 139d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstypedef struct _mgslpc_info { 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *if_ptr; /* General purpose pointer (used by SPPP) */ 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int magic; 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int flags; 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count; /* count of opens */ 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int line; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short close_delay; 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short closing_wait; /* time to wait before closing */ 148d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount icount; 150d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tty; 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int timeout; 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int x_char; /* xon/xoff character */ 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int blocked_open; /* # of blocked opens */ 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char read_status_mask; 156d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik unsigned char ignore_status_mask; 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *tx_buf; 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tx_put; 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tx_get; 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tx_count; 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* circular list of fixed length rx buffers */ 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *rx_buf; /* memory allocated for all rx buffers */ 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_buf_total_size; /* size of memory allocated for rx buffers */ 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_put; /* index of next empty rx buffer */ 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_get; /* index of next full rx buffer */ 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_buf_size; /* size in bytes of single rx buffer */ 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_buf_count; /* total number of rx buffers */ 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_frame_count; /* number of full rx buffers */ 172d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t open_wait; 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t close_wait; 175d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t status_event_wait_q; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t event_wait_q; 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timer_list tx_timer; /* HDLC transmit timeout timer */ 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct _mgslpc_info *next_device; /* device list link */ 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short imra_value; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short imrb_value; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char pim_value; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct work_struct task; /* task structure for scheduling bh */ 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 max_frame_size; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 pending_bh; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1920fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool bh_running; 1930fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool bh_requested; 194d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dcd_chkcount; /* check counts to prevent */ 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cts_chkcount; /* too many IRQs if a signal */ 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dsr_chkcount; /* is floating */ 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ri_chkcount; 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2000fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool rx_enabled; 2010fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool rx_overflow; 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2030fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool tx_enabled; 2040fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool tx_active; 2050fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool tx_aborting; 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 idle_mode; 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int if_mode; /* serial interface selection (RS-232, v.35 etc) */ 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char device_name[25]; /* device instance name */ 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int io_base; /* base I/O address of adapter */ 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int irq_level; 214d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSL_PARAMS params; /* communications parameters */ 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char serial_signals; /* current serial signal states */ 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2190fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool irq_occurred; /* for diagnostics use */ 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char testing_irq; 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int init_error; /* startup error (DIAGS) */ 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char flag_buf[MAX_ASYNC_BUFFER_SIZE]; 2240fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool drop_rts_on_tx_done; 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct _input_signal_events input_signal_events; 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* PCMCIA support */ 229fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski struct pcmcia_device *p_dev; 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_node_t node; 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int stop; 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SPPP/Cisco HDLC device parts */ 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int netcount; 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dosyncppp; 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t netlock; 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 238af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *netdev; 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} MGSLPC_INFO; 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MGSLPC_MAGIC 0x5402 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The size of the serial xmit buffer is 1 page, or 4096 bytes 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXBUFSIZE 4096 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 251d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CHA 0x00 /* channel A offset */ 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CHB 0x40 /* channel B offset */ 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME: PPC has PVR defined in asm/reg.h. For now we just undef it. 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef PVR 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RXFIFO 0 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXFIFO 0 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STAR 0x20 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMDR 0x20 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RSTA 0x21 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PRE 0x21 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MODE 0x22 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TIMR 0x23 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XAD1 0x24 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XAD2 0x25 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAH1 0x26 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAH2 0x27 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DAFO 0x27 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAL1 0x28 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RFC 0x28 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RHCR 0x29 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAL2 0x29 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RBCL 0x2a 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XBCL 0x2a 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RBCH 0x2b 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XBCH 0x2b 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR0 0x2c 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR1 0x2d 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR2 0x2e 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR3 0x2f 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VSTR 0x34 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BGR 0x34 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RLCR 0x35 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AML 0x36 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AMH 0x37 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GIS 0x38 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IVA 0x38 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IPC 0x39 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ISR 0x3a 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IMR 0x3a 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR 0x3c 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PIS 0x3d 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PIM 0x3d 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PCR 0x3e 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR4 0x3f 300d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// IMR/ISR 302d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_BREAK_ON BIT15 // rx break detected 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_DATAOVERRUN BIT14 // receive data overflow 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_ALLSENT BIT13 // all sent 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_UNDERRUN BIT12 // transmit data underrun 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_TIMER BIT11 // timer interrupt 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_CTS BIT10 // CTS status change 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_TXREPEAT BIT9 // tx message repeat 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_TXFIFO BIT8 // transmit pool ready 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_RXEOM BIT7 // receive message end 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_EXITHUNT BIT6 // receive frame start 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_RXTIME BIT6 // rx char timeout 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_DCD BIT2 // carrier detect status change 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_OVERRUN BIT1 // receive frame overflow 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_RXFIFO BIT0 // receive pool full 317d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// STAR 319d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XFW BIT6 // transmit FIFO write enable 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CEC BIT2 // command executing 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CTS BIT1 // CTS state 323d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_DTR BIT0 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_DSR BIT1 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_RI BIT2 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_AUTOCTS BIT3 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_RS232 0x20 /* 0010b */ 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_V35 0xe0 /* 1110b */ 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_RS422 0x40 /* 0100b */ 331d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 332d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik/* Register access functions */ 333d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define write_reg(info, reg, val) outb((val),(info)->io_base + (reg)) 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define read_reg(info, reg) inb((info)->io_base + (reg)) 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 337d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik#define read_reg16(info, reg) inw((info)->io_base + (reg)) 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define write_reg16(info, reg, val) outw((val), (info)->io_base + (reg)) 339d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define set_reg_bits(info, reg, mask) \ 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (reg), \ 342d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik (unsigned char) (read_reg(info, (reg)) | (mask))) 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define clear_reg_bits(info, reg, mask) \ 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (reg), \ 345d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik (unsigned char) (read_reg(info, (reg)) & ~(mask))) 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interrupt enable/disable routines 348d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 349d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (channel == CHA) { 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imra_value |= mask; 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHA + IMR, info->imra_value); 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imrb_value |= mask; 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHB + IMR, info->imrb_value); 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 359d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (channel == CHA) { 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imra_value &= ~mask; 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHA + IMR, info->imra_value); 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imrb_value &= ~mask; 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHB + IMR, info->imrb_value); 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define port_irq_disable(info, mask) \ 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { info->pim_value |= (mask); write_reg(info, PIM, info->pim_value); } 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define port_irq_enable(info, mask) \ 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { info->pim_value &= ~(mask); write_reg(info, PIM, info->pim_value); } 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_start(MGSLPC_INFO *info); 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_stop(MGSLPC_INFO *info); 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_start(MGSLPC_INFO *info); 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_stop(MGSLPC_INFO *info); 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_set_idle(MGSLPC_INFO *info); 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void get_signals(MGSLPC_INFO *info); 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void set_signals(MGSLPC_INFO *info); 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void reset_device(MGSLPC_INFO *info); 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlc_mode(MGSLPC_INFO *info); 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void async_mode(MGSLPC_INFO *info); 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_timeout(unsigned long context); 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg); 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 395af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dev_to_port(D) (dev_to_hdlc(D)->priv) 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_tx_done(MGSLPC_INFO *info); 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size); 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_init(MGSLPC_INFO *info); 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_exit(MGSLPC_INFO *info); 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit); 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4050fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool register_test(MGSLPC_INFO *info); 4060fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool irq_test(MGSLPC_INFO *info); 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int adapter_test(MGSLPC_INFO *info); 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int claim_resources(MGSLPC_INFO *info); 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void release_resources(MGSLPC_INFO *info); 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_add_device(MGSLPC_INFO *info); 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_remove_device(MGSLPC_INFO *info); 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4140fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool rx_get_frame(MGSLPC_INFO *info); 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_reset_buffers(MGSLPC_INFO *info); 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int rx_alloc_buffers(MGSLPC_INFO *info); 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_free_buffers(MGSLPC_INFO *info); 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4197d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t mgslpc_isr(int irq, void *dev_id); 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bottom half interrupt handlers 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 424c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void bh_handler(struct work_struct *work); 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void bh_transmit(MGSLPC_INFO *info); 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void bh_status(MGSLPC_INFO *info); 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ioctl handlers 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tiocmget(struct tty_struct *tty, struct file *file); 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tiocmset(struct tty_struct *tty, struct file *file, 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear); 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_stats(MGSLPC_INFO *info, struct mgsl_icount __user *user_icount); 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_params(MGSLPC_INFO *info, MGSL_PARAMS __user *user_params); 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params); 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_txidle(MGSLPC_INFO *info, int __user *idle_mode); 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_txidle(MGSLPC_INFO *info, int idle_mode); 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_txenable(MGSLPC_INFO *info, int enable); 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tx_abort(MGSLPC_INFO *info); 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_rxenable(MGSLPC_INFO *info, int enable); 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int wait_events(MGSLPC_INFO *info, int __user *mask); 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic MGSLPC_INFO *mgslpc_device_list = NULL; 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_device_count = 0; 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Set this param to non-zero to load eax with the 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * .text section address and breakpoint on module load. 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is useful for use with gdb and add-symbol-file command. 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int break_on_load=0; 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver major number, defaults to zero to get auto 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * assigned major number. May be forced as module parameter. 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ttymajor=0; 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_level = 0; 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int maxframe[MAX_DEVICE_COUNT] = {0,}; 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dosyncppp[MAX_DEVICE_COUNT] = {1,1,1,1}; 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(break_on_load, bool, 0); 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(ttymajor, int, 0); 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(debug_level, int, 0); 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param_array(maxframe, int, NULL, 0); 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param_array(dosyncppp, int, NULL, 0); 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *driver_name = "SyncLink PC Card driver"; 473a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghumstatic char *driver_version = "$Revision: 4.34 $"; 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct tty_driver *serial_driver; 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* number of characters left in xmit buffer before we ask for more */ 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WAKEUP_CHARS 256 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_change_params(MGSLPC_INFO *info); 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout); 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* PCMCIA prototypes */ 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 48515b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowskistatic int mgslpc_config(struct pcmcia_device *link); 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_release(u_long arg); 487cc3b4866bee996c922e875b8c8efe9f0d8803aaeDominik Brodowskistatic void mgslpc_detach(struct pcmcia_device *p_dev); 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1st function defined in .text section. Calling this function in 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * init_module() followed by a breakpoint allows a remote debugger 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (gdb) to get the .text address for the add-symbol-file command. 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This allows remote debugging of dynamically loadable modules. 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void* mgslpc_get_text_ptr(void) 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return mgslpc_get_text_ptr; 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * line discipline callback wrappers 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The wrappers maintain line discipline references 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * while calling into the line discipline. 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ldisc_receive_buf - pass receive data to line discipline 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ldisc_receive_buf(struct tty_struct *tty, 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const __u8 *data, char *flags, int count) 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_ldisc *ld; 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tty) 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ld = tty_ldisc_ref(tty); 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ld) { 517a352def21a642133758b868c71bee12ab34ad5c5Alan Cox if (ld->ops->receive_buf) 518a352def21a642133758b868c71bee12ab34ad5c5Alan Cox ld->ops->receive_buf(tty, data, flags, count); 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_ldisc_deref(ld); 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 52315b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowskistatic int mgslpc_probe(struct pcmcia_device *link) 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info; 52615b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski int ret; 527fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("mgslpc_attach\n"); 530fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 531dd00cc486ab1c17049a535413d1751ef3482141cYoann Padioleau info = kzalloc(sizeof(MGSLPC_INFO), GFP_KERNEL); 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) { 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Error can't allocate device instance data\n"); 534f8cfa618dccbdc6dab5297f75779566a388a98fdDominik Brodowski return -ENOMEM; 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->magic = MGSLPC_MAGIC; 538c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells INIT_WORK(&info->task, bh_handler); 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = 4096; 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->close_delay = 5*HZ/10; 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->closing_wait = 30*HZ; 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&info->open_wait); 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&info->close_wait); 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&info->status_event_wait_q); 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&info->event_wait_q); 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&info->lock); 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&info->netlock); 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); 549d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik info->idle_mode = HDLC_TXIDLE_FLAGS; 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imra_value = 0xffff; 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imrb_value = 0xffff; 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pim_value = 0xff; 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 554fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski info->p_dev = link; 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->priv = info; 556fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 557fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski /* Initialize the struct pcmcia_device structure */ 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Interrupt setup */ 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; 5610c7ab67602e65b3ba7aaa81f023b034cd7458ec6Dominik Brodowski link->irq.IRQInfo1 = IRQ_LEVEL_ID; 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->irq.Handler = NULL; 563fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.Attributes = 0; 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.IntType = INT_MEMORY_AND_IO; 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 56715b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski ret = mgslpc_config(link); 56815b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski if (ret) 56915b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski return ret; 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_add_device(info); 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 573f8cfa618dccbdc6dab5297f75779566a388a98fdDominik Brodowski return 0; 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Card has been inserted. 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CS_CHECK(fn, ret) \ 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdo { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 58215b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowskistatic int mgslpc_config(struct pcmcia_device *link) 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = link->priv; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple_t tuple; 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cisparse_t parse; 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int last_fn, last_ret; 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u_char buf[64]; 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cistpl_cftable_entry_t dflt = { 0 }; 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cistpl_cftable_entry_t *cfg; 591d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("mgslpc_config(0x%p)\n", link); 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple.Attributes = 0; 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple.TupleData = buf; 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple.TupleDataMax = sizeof(buf); 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple.TupleOffset = 0; 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get CIS configuration entry */ 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 603fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfg = &(parse.cftable_entry); 606fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple)); 607fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse)); 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg; 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cfg->index == 0) 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cs_failed; 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.ConfigIndex = cfg->index; 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.Attributes |= CONF_ENABLE_IRQ; 615d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* IO window settings */ 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.NumPorts1 = 0; 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(io->flags & CISTPL_IO_8BIT)) 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(io->flags & CISTPL_IO_16BIT)) 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.BasePort1 = io->win[0].base; 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.NumPorts1 = io->win[0].len; 628fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io)); 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.Attributes = CONF_ENABLE_IRQ; 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.IntType = INT_MEMORY_AND_IO; 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.ConfigIndex = 8; 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.Present = PRESENT_OPTION; 635d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->irq.Attributes |= IRQ_HANDLE_PRESENT; 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->irq.Handler = mgslpc_isr; 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->irq.Instance = info; 639fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 641fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->io_base = link->io.BasePort1; 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->irq_level = link->irq.AssignedIRQ; 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* add to linked list of devices */ 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sprintf(info->node.dev_name, "mgslpc0"); 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->node.major = info->node.minor = 0; 649fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski link->dev_node = &info->node; 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "%s: index 0x%02x:", 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->node.dev_name, link->conf.ConfigIndex); 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (link->conf.Attributes & CONF_ENABLE_IRQ) 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(", irq %d", link->irq.AssignedIRQ); 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (link->io.NumPorts1) 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(", io 0x%04x-0x%04x", link->io.BasePort1, 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.BasePort1+link->io.NumPorts1-1); 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 65915b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski return 0; 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldscs_failed: 662fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski cs_error(link, last_fn, last_ret); 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_release((u_long)link); 66415b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski return -ENODEV; 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Card has been removed. 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Unregister device and release PCMCIA configuration. 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If device is open, postpone until it is closed. 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_release(u_long arg) 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 673e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski struct pcmcia_device *link = (struct pcmcia_device *)arg; 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 675e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski if (debug_level >= DEBUG_LEVEL_INFO) 676e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski printk("mgslpc_release(0x%p)\n", link); 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 678e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski pcmcia_disable_device(link); 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 681fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowskistatic void mgslpc_detach(struct pcmcia_device *link) 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 683e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski if (debug_level >= DEBUG_LEVEL_INFO) 684e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski printk("mgslpc_detach(0x%p)\n", link); 685cc3b4866bee996c922e875b8c8efe9f0d8803aaeDominik Brodowski 686e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski ((MGSLPC_INFO *)link->priv)->stop = 1; 687e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski mgslpc_release((u_long)link); 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 689e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski mgslpc_remove_device((MGSLPC_INFO *)link->priv); 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 692fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowskistatic int mgslpc_suspend(struct pcmcia_device *link) 69398e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski{ 69498e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski MGSLPC_INFO *info = link->priv; 69598e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 69698e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski info->stop = 1; 69798e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 69898e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski return 0; 69998e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski} 70098e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 701fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowskistatic int mgslpc_resume(struct pcmcia_device *link) 70298e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski{ 70398e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski MGSLPC_INFO *info = link->priv; 70498e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 70598e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski info->stop = 0; 70698e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 70798e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski return 0; 70898e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski} 70998e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 71098e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 7110fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic inline bool mgslpc_paranoia_check(MGSLPC_INFO *info, 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *name, const char *routine) 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MGSLPC_PARANOIA_CHECK 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static const char *badmagic = 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Warning: bad magic number for mgsl struct (%s) in %s\n"; 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static const char *badinfo = 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Warning: null mgslpc_info for (%s) in %s\n"; 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) { 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(badinfo, name, routine); 7220fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->magic != MGSLPC_MAGIC) { 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(badmagic, name, routine); 7260fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 7300fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 7320fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return false; 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_RXFIFO BIT7 // release current rx FIFO 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_RXRESET BIT6 // receiver reset 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_RXFIFO_READ BIT5 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_START_TIMER BIT4 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_TXFIFO BIT3 // release current tx FIFO 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_TXEOM BIT1 // transmit end message 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_TXRESET BIT0 // transmit reset 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7440fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool wait_command_complete(MGSLPC_INFO *info, unsigned char channel) 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i = 0; 747d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* wait for command completion */ 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (read_reg(info, (unsigned char)(channel+STAR)) & BIT2) { 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(1); 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (i++ == 1000) 7510fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return false; 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7530fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 756d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void issue_command(MGSLPC_INFO *info, unsigned char channel, unsigned char cmd) 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_command_complete(info, channel); 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (unsigned char) (channel + CMDR), cmd); 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_pause(struct tty_struct *tty) 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 766d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "tx_pause")) 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 770d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik printk("tx_pause(%s)\n",info->device_name); 771d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_enabled) 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_release(struct tty_struct *tty) 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 782d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "tx_release")) 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 786d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik printk("tx_release(%s)\n",info->device_name); 787d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_enabled) 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_start(info); 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Return next bottom half action to perform. 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * or 0 if nothing to do. 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int bh_action(MGSLPC_INFO *info) 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc = 0; 801d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->pending_bh & BH_RECEIVE) { 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh &= ~BH_RECEIVE; 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = BH_RECEIVE; 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->pending_bh & BH_TRANSMIT) { 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh &= ~BH_TRANSMIT; 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = BH_TRANSMIT; 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->pending_bh & BH_STATUS) { 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh &= ~BH_STATUS; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = BH_STATUS; 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!rc) { 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Mark BH routine as complete */ 8170fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_running = false; 8180fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_requested = false; 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 820d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 822d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 826c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void bh_handler(struct work_struct *work) 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 828c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells MGSLPC_INFO *info = container_of(work, MGSLPC_INFO, task); 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int action; 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 833d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):bh_handler(%s) entry\n", 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 837d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8380fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_running = true; 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while((action = bh_action(info)) != 0) { 841d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Process work item */ 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( debug_level >= DEBUG_LEVEL_BH ) 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):bh_handler() work item action=%d\n", 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,action); 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (action) { 848d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case BH_RECEIVE: 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(rx_get_frame(info)); 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case BH_TRANSMIT: 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bh_transmit(info); 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case BH_STATUS: 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bh_status(info); 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* unknown work item ID */ 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Unknown work item ID=%08X!\n", action); 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):bh_handler(%s) exit\n", 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 870cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void bh_transmit(MGSLPC_INFO *info) 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tty = info->tty; 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("bh_transmit() entry on %s\n", info->device_name); 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 876b963a8441cb95999c97bea379607071a869c65f0Jiri Slaby if (tty) 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 880cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void bh_status(MGSLPC_INFO *info) 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->ri_chkcount = 0; 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dsr_chkcount = 0; 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dcd_chkcount = 0; 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->cts_chkcount = 0; 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 888d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik/* eom: non-zero = end of frame */ 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_ready_hdlc(MGSLPC_INFO *info, int eom) 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char data[2]; 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char fifo_count, read_count, i; 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds RXBUF *buf = (RXBUF*)(info->rx_buf + (info->rx_put * info->rx_buf_size)); 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_ready_hdlc(eom=%d)\n",__FILE__,__LINE__,eom); 897d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->rx_enabled) 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_frame_count >= info->rx_buf_count) { 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no more free buffers */ 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXRESET); 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_RECEIVE; 9050fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_overflow = true; 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.buf_overrun++; 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (eom) { 911d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* end of frame, get FIFO count from RBCL register */ 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f))) 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 916d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (fifo_count == 1) { 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_count = 1; 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[0] = read_reg(info, CHA + RXFIFO); 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_count = 2; 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *((unsigned short *) data) = read_reg16(info, CHA + RXFIFO); 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count -= read_count; 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!fifo_count && eom) 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->status = data[--read_count]; 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < read_count; i++) { 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (buf->count >= info->max_frame_size) { 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* frame too large, reset receiver and reset current buffer */ 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXRESET); 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->count = 0; 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *(buf->data + buf->count) = data[i]; 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->count++; 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (fifo_count); 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (eom) { 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_RECEIVE; 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_frame_count++; 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_put++; 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_put >= info->rx_buf_count) 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_put = 0; 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXFIFO); 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_ready_async(MGSLPC_INFO *info, int tcd) 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 95333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox unsigned char data, status, flag; 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int fifo_count; 95533f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox int work = 0; 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tty = info->tty; 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount *icount = &info->icount; 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tcd) { 960d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* early termination, get FIFO count from RBCL register */ 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f); 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Zero fifo count could mean 0 or 32 bytes available. 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If BIT5 of STAR is set then at least 1 byte is available. 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!fifo_count && (read_reg(info,CHA+STAR) & BIT5)) 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 97033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 97133f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox tty_buffer_request_room(tty, fifo_count); 972d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* Flush received async data to receive data buffer. */ 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (fifo_count) { 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data = read_reg(info, CHA + RXFIFO); 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = read_reg(info, CHA + RXFIFO); 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count -= 2; 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->rx++; 97933f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox flag = TTY_NORMAL; 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // if no frameing/crc error then save data 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // BIT7:parity error 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // BIT6:framing error 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & (BIT7 + BIT6)) { 986d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (status & BIT7) 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->parity++; 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->frame++; 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* discard char if tty control flags say so */ 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & info->ignore_status_mask) 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 994d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status &= info->read_status_mask; 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & BIT7) 99833f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox flag = TTY_PARITY; 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (status & BIT6) 100033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox flag = TTY_FRAME; 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 100233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox work += tty_insert_flip_char(tty, data, flag); 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXFIFO); 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) { 100733f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox printk("%s(%d):rx_ready_async", 100833f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox __FILE__,__LINE__); 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx=%d brk=%d parity=%d frame=%d overrun=%d\n", 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,icount->rx,icount->brk, 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->parity,icount->frame,icount->overrun); 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1013d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 101433f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox if (work) 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flip_buffer_push(tty); 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_done(MGSLPC_INFO *info) 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1023d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 10240fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 10250fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_aborting = false; 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 1031d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik del_timer(&info->tx_timer); 1032d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->drop_rts_on_tx_done) { 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) { 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~SerialSignal_RTS; 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10390fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->drop_rts_on_tx_done = false; 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1042af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_tx_done(info); 1045d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik else 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tty->stopped || info->tty->hw_stopped) { 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_TRANSMIT; 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_ready(MGSLPC_INFO *info) 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char fifo_count = 32; 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int c; 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):tx_ready(%s)\n", __FILE__,__LINE__,info->device_name); 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tty->stopped || info->tty->hw_stopped) { 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_count) 10730fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_count) 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (info->tx_count && fifo_count) { 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = min(2, min_t(int, fifo_count, min(info->tx_count, TXBUFSIZE - info->tx_get))); 1081d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c == 1) { 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + TXFIFO, *(info->tx_buf + info->tx_get)); 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHA + TXFIFO, 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *((unsigned short*)(info->tx_buf + info->tx_get))); 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count -= c; 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_get = (info->tx_get + c) & (TXBUFSIZE - 1); 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count -= c; 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) { 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count < WAKEUP_CHARS) 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_TRANSMIT; 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXFIFO); 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count) 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXFIFO); 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXFIFO + CMD_TXEOM); 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void cts_change(MGSLPC_INFO *info) 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, IRQ_CTS); 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.cts++; 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_CTS) 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.cts_up++; 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.cts_down++; 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->flags & ASYNC_CTS_FLOW) { 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tty->hw_stopped) { 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_CTS) { 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("CTS tx start..."); 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tty) 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tty->hw_stopped = 0; 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_start(info); 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_TRANSMIT; 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->serial_signals & SerialSignal_CTS)) { 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("CTS tx stop..."); 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tty) 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tty->hw_stopped = 1; 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dcd_change(MGSLPC_INFO *info) 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, IRQ_DCD); 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.dcd++; 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DCD) { 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dcd_up++; 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dcd_down++; 1153af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 1154fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa if (info->netcount) { 1155fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa if (info->serial_signals & SerialSignal_DCD) 1156fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_on(info->netdev); 1157fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa else 1158fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_off(info->netdev); 1159fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa } 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->flags & ASYNC_CHECK_CD) { 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s CD now %s...", info->device_name, 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (info->serial_signals & SerialSignal_DCD) ? "on" : "off"); 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DCD) 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->open_wait); 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("doing serial hangup..."); 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tty) 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_hangup(info->tty); 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dsr_change(MGSLPC_INFO *info) 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->dsr_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, PVR_DSR); 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.dsr++; 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DSR) 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dsr_up++; 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dsr_down++; 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ri_change(MGSLPC_INFO *info) 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->ri_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, PVR_RI); 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rng++; 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RI) 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.ri_up++; 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.ri_down++; 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Interrupt service routine entry point. 1211d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 1213d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * irq interrupt number that caused interrupt 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev_id device ID supplied during interrupt registration 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1217a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzikstatic irqreturn_t mgslpc_isr(int dummy, void *dev_id) 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1219a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzik MGSLPC_INFO *info = dev_id; 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short isr; 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char gis, pis; 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count=0; 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1224d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (debug_level >= DEBUG_LEVEL_ISR) 1225a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzik printk("mgslpc_isr(%d) entry.\n", info->irq_level); 1226d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1227e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski if (!(info->p_dev->_locked)) 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_HANDLED; 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock(&info->lock); 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while ((gis = read_reg(info, CHA + GIS))) { 1233d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (debug_level >= DEBUG_LEVEL_ISR) 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("mgslpc_isr %s gis=%04X\n", info->device_name,gis); 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((gis & 0x70) || count > 1000) { 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("synclink_cs:hardware failed or ejected\n"); 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count++; 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gis & (BIT1 + BIT0)) { 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds isr = read_reg16(info, CHB + ISR); 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_DCD) 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dcd_change(info); 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_CTS) 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cts_change(info); 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gis & (BIT3 + BIT2)) 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds isr = read_reg16(info, CHA + ISR); 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_TIMER) { 12530fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->irq_occurred = true; 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, IRQ_TIMER); 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1257d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* receive IRQs */ 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_EXITHUNT) { 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.exithunt++; 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_BREAK_ON) { 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.brk++; 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->flags & ASYNC_SAK) 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_SAK(info->tty); 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_RXTIME) { 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXFIFO_READ); 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & (IRQ_RXEOM + IRQ_RXFIFO)) { 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) 1272d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik rx_ready_hdlc(info, isr & IRQ_RXEOM); 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_ready_async(info, isr & IRQ_RXEOM); 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1277d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* transmit IRQs */ 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_UNDERRUN) { 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_aborting) 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txabort++; 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txunder++; 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_done(info); 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (isr & IRQ_ALLSENT) { 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txok++; 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_done(info); 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (isr & IRQ_TXFIFO) 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_ready(info); 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gis & BIT7) { 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pis = read_reg(info, CHA + PIS); 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (pis & BIT1) 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsr_change(info); 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (pis & BIT2) 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ri_change(info); 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1300d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1301d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* Request bottom half processing if there's something 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for it to do and the bh is not already running 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->pending_bh && !info->bh_running && !info->bh_requested) { 1306d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if ( debug_level >= DEBUG_LEVEL_ISR ) 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):%s queueing bh task.\n", 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule_work(&info->task); 13100fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_requested = true; 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock(&info->lock); 1314d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1315d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (debug_level >= DEBUG_LEVEL_ISR) 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_isr(%d)exit.\n", 1317a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzik __FILE__, __LINE__, info->irq_level); 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_HANDLED; 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Initialize and start device. 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int startup(MGSLPC_INFO * info) 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = 0; 1327d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):startup(%s)\n",__FILE__,__LINE__,info->device_name); 1330d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->flags & ASYNC_INITIALIZED) 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1333d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_buf) { 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate a page of memory for a transmit buffer */ 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL); 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_buf) { 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR"%s(%d):%s can't allocate transmit buffer\n", 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh = 0; 1345d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1346a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum memset(&info->icount, 0, sizeof(info->icount)); 1347a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum 134840565f1962c5be9b9e285e05af01ab7771534868Jiri Slaby setup_timer(&info->tx_timer, tx_timeout, (unsigned long)info); 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Allocate and claim adapter resources */ 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = claim_resources(info); 1352d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* perform existance check and diagnostics */ 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( !retval ) 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = adapter_test(info); 1356d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( retval ) { 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (capable(CAP_SYS_ADMIN) && info->tty) 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_bit(TTY_IO_ERROR, &info->tty->flags); 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_resources(info); 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* program hardware for current parameters */ 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_change_params(info); 1366d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tty) 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_bit(TTY_IO_ERROR, &info->tty->flags); 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags |= ASYNC_INITIALIZED; 1371d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Called by mgslpc_close() and mgslpc_hangup() to shutdown hardware 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void shutdown(MGSLPC_INFO * info) 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1380d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->flags & ASYNC_INITIALIZED)) 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_shutdown(%s)\n", 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear status wait queue because status changes */ 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* can't happen after shutting down the hardware */ 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 139340565f1962c5be9b9e285e05af01ab7771534868Jiri Slaby del_timer_sync(&info->tx_timer); 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_buf) { 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_page((unsigned long) info->tx_buf); 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_buf = NULL; 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_stop(info); 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* TODO:disable interrupts instead of reset to preserve signal states */ 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 1407d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tty || info->tty->termios->c_cflag & HUPCL) { 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS); 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1412d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1415d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik release_resources(info); 1416d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tty) 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_bit(TTY_IO_ERROR, &info->tty->flags); 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags &= ~ASYNC_INITIALIZED; 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_program_hw(MGSLPC_INFO *info) 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 1428d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_stop(info); 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 1432d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC || info->netcount) 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_mode(info); 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds async_mode(info); 1437d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 1439d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dcd_chkcount = 0; 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->cts_chkcount = 0; 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->ri_chkcount = 0; 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dsr_chkcount = 0; 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHB, IRQ_DCD | IRQ_CTS); 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_enable(info, (unsigned char) PVR_DSR | PVR_RI); 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 1448d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount || info->tty->termios->c_cflag & CREAD) 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_start(info); 1451d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Reconfigure adapter based on new parameters 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_change_params(MGSLPC_INFO *info) 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned cflag; 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int bits_per_char; 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tty || !info->tty->termios) 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1464d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_change_params(%s)\n", 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 1468d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cflag = info->tty->termios->c_cflag; 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if B0 rate (hangup) specified then negate DTR and RTS */ 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* otherwise assert DTR and RTS */ 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CBAUD) 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); 1477d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* byte size and parity */ 1479d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cflag & CSIZE) { 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS5: info->params.data_bits = 5; break; 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS6: info->params.data_bits = 6; break; 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS7: info->params.data_bits = 7; break; 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS8: info->params.data_bits = 8; break; 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: info->params.data_bits = 7; break; 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1487d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CSTOPB) 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.stop_bits = 2; 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.stop_bits = 1; 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.parity = ASYNC_PARITY_NONE; 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & PARENB) { 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & PARODD) 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.parity = ASYNC_PARITY_ODD; 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.parity = ASYNC_PARITY_EVEN; 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CMSPAR 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CMSPAR) 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.parity = ASYNC_PARITY_SPACE; 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* calculate number of jiffies to transmit a full 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIFO (32 bytes) at specified data rate 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1508d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik bits_per_char = info->params.data_bits + 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.stop_bits + 1; 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if port data rate is set to 460800 or less then 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * allow tty settings to override, otherwise keep the 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * current data rate. 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.data_rate <= 460800) { 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.data_rate = tty_get_baud_rate(info->tty); 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1518d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( info->params.data_rate ) { 1520d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik info->timeout = (32*HZ*bits_per_char) / 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.data_rate; 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->timeout += HZ/50; /* Add .02 seconds of slop */ 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CRTSCTS) 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags |= ASYNC_CTS_FLOW; 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags &= ~ASYNC_CTS_FLOW; 1529d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CLOCAL) 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags &= ~ASYNC_CHECK_CD; 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags |= ASYNC_CHECK_CD; 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* process tty input control flags */ 1536d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->read_status_mask = 0; 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (I_INPCK(info->tty)) 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->read_status_mask |= BIT7 | BIT6; 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (I_IGNPAR(info->tty)) 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->ignore_status_mask |= BIT7 | BIT6; 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_program_hw(info); 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Add a character to the transmit buffer 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1548d7e752e2757fba49178f4b1af4778ca64d305cbbAlan Coxstatic int mgslpc_put_char(struct tty_struct *tty, unsigned char ch) 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) { 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):mgslpc_put_char(%d) on %s\n", 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,ch,info->device_name); 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_put_char")) 1559d7e752e2757fba49178f4b1af4778ca64d305cbbAlan Cox return 0; 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1561326f28e9ec4b2619c2fd410593fc95fcb0ba6b41Eric Sesterhenn if (!info->tx_buf) 1562d7e752e2757fba49178f4b1af4778ca64d305cbbAlan Cox return 0; 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 1565d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC || !info->tx_active) { 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count < TXBUFSIZE - 1) { 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_buf[info->tx_put++] = ch; 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_put &= TXBUFSIZE-1; 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count++; 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1573d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 1575d7e752e2757fba49178f4b1af4778ca64d305cbbAlan Cox return 1; 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Enable transmitter so remaining characters in the 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * transmit buffer are sent. 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_flush_chars(struct tty_struct *tty) 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1585d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):mgslpc_flush_chars() entry on %s tx_count=%d\n", 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name,info->tx_count); 1589d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_flush_chars")) 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count <= 0 || tty->stopped || 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->hw_stopped || !info->tx_buf) 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):mgslpc_flush_chars() entry on %s starting transmitter\n", 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_start(info); 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Send a block of data 1608d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 1610d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty pointer to tty information structure 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * buf pointer to buffer containing send data 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * count size of send data in bytes 1614d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns: number of characters written 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_write(struct tty_struct * tty, 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const unsigned char *buf, int count) 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int c, ret = 0; 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1623d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):mgslpc_write(%s) count=%d\n", 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name,count); 1627d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write") || 1629326f28e9ec4b2619c2fd410593fc95fcb0ba6b41Eric Sesterhenn !info->tx_buf) 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count > TXBUFSIZE) { 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = -EIO; 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_active) 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (info->tx_count) 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto start; 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (;;) { 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = min(count, 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds min(TXBUFSIZE - info->tx_count - 1, 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds TXBUFSIZE - info->tx_put)); 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c <= 0) 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1649d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(info->tx_buf + info->tx_put, buf, c); 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_put = (info->tx_put + c) & (TXBUFSIZE-1); 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count += c; 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += c; 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= c; 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += c; 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstart: 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count && !tty->stopped && !tty->hw_stopped) { 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_start(info); 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1668d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikcleanup: 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):mgslpc_write(%s) returning=%d\n", 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name,ret); 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Return the count of free bytes in transmit buffer 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_write_room(struct tty_struct *tty) 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 1681d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write_room")) 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* HDLC (frame oriented) mode */ 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_active) 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return HDLC_MAX_FRAME_SIZE; 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = TXBUFSIZE - info->tx_count - 1; 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ret < 0) 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = 0; 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1696d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_write_room(%s)=%d\n", 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, ret); 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Return the count of bytes in transmit buffer 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_chars_in_buffer(struct tty_struct *tty) 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 1709d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_chars_in_buffer(%s)\n", 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 1713d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_chars_in_buffer")) 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1716d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = info->tx_active ? info->max_frame_size : 0; 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = info->tx_count; 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_chars_in_buffer(%s)=%d\n", 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, rc); 1725d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Discard all data in the send buffer 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_flush_buffer(struct tty_struct *tty) 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1735d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_flush_buffer(%s) entry\n", 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 1739d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_flush_buffer")) 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1742d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1743d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik spin_lock_irqsave(&info->lock,flags); 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 1745d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik del_timer(&info->tx_timer); 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&tty->write_wait); 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Send a high-priority XON/XOFF character 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_send_xchar(struct tty_struct *tty, char ch) 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_send_xchar(%s,%d)\n", 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, ch ); 1762d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_send_xchar")) 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->x_char = ch; 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch) { 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_enabled) 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_start(info); 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Signal remote device to throttle send data (our receive data) 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_throttle(struct tty_struct * tty) 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1781d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_throttle(%s) entry\n", 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_throttle")) 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1788d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (I_IXOFF(tty)) 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_send_xchar(tty, STOP_CHAR(tty)); 1791d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->termios->c_cflag & CRTSCTS) { 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~SerialSignal_RTS; 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Signal remote device to stop throttling send data (our receive data) 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_unthrottle(struct tty_struct * tty) 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1806d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_unthrottle(%s) entry\n", 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_unthrottle")) 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1813d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (I_IXOFF(tty)) { 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->x_char) 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->x_char = 0; 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_send_xchar(tty, START_CHAR(tty)); 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1820d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->termios->c_cflag & CRTSCTS) { 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS; 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* get the current serial statistics 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_stats(MGSLPC_INFO * info, struct mgsl_icount __user *user_icount) 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("get_params(%s)\n", info->device_name); 1836a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum if (!user_icount) { 1837a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum memset(&info->icount, 0, sizeof(info->icount)); 1838a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum } else { 1839a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum COPY_TO_USER(err, user_icount, &info->icount, sizeof(struct mgsl_icount)); 1840a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum if (err) 1841a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum return -EFAULT; 1842a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum } 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* get the current serial parameters 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_params(MGSLPC_INFO * info, MGSL_PARAMS __user *user_params) 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("get_params(%s)\n", info->device_name); 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COPY_TO_USER(err,user_params, &info->params, sizeof(MGSL_PARAMS)); 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* set the serial parameters 1860d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 1862d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance data 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * new_params user buffer containing new serial params 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns: 0 if success, otherwise error code 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params) 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSL_PARAMS tmp_params; 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 1873d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):set_params %s\n", __FILE__,__LINE__, 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name ); 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COPY_FROM_USER(err,&tmp_params, new_params, sizeof(MGSL_PARAMS)); 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) { 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( debug_level >= DEBUG_LEVEL_INFO ) 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):set_params(%s) user buffer copy failed\n", 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1884d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS)); 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 1888d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_change_params(info); 1890d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_txidle(MGSLPC_INFO * info, int __user *idle_mode) 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("get_txidle(%s)=%d\n", info->device_name, info->idle_mode); 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COPY_TO_USER(err,idle_mode, &info->idle_mode, sizeof(int)); 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_txidle(MGSLPC_INFO * info, int idle_mode) 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("set_txidle(%s,%d)\n", info->device_name, idle_mode); 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->idle_mode = idle_mode; 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_set_idle(info); 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_interface(MGSLPC_INFO * info, int __user *if_mode) 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("get_interface(%s)=%d\n", info->device_name, info->if_mode); 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COPY_TO_USER(err,if_mode, &info->if_mode, sizeof(int)); 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_interface(MGSLPC_INFO * info, int if_mode) 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("set_interface(%s,%d)\n", info->device_name, if_mode); 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->if_mode = if_mode; 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, PVR) & 0x0f; 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->if_mode) 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_INTERFACE_RS232: val |= PVR_RS232; break; 19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_INTERFACE_V35: val |= PVR_V35; break; 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_INTERFACE_RS422: val |= PVR_RS422; break; 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, PVR, val); 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 19471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_txenable(MGSLPC_INFO * info, int enable) 19511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1953d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 19551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("set_txenable(%s,%d)\n", info->device_name, enable); 1956d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (enable) { 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_enabled) 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_start(info); 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_enabled) 19631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tx_abort(MGSLPC_INFO * info) 19701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1972d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("tx_abort(%s)\n", info->device_name); 1975d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_active && info->tx_count && 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.mode == MGSL_MODE_HDLC) { 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear data count so FIFO is not filled on next IRQ. 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This results in underrun and abort transmission. 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 19830fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_aborting = true; 19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_rxenable(MGSLPC_INFO * info, int enable) 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1992d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 19941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("set_rxenable(%s,%d)\n", info->device_name, enable); 1995d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 19971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (enable) { 19981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->rx_enabled) 19991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_start(info); 20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_enabled) 20021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_stop(info); 20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* wait for specified event to occur 2009d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: info pointer to device instance data 20111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * mask pointer to bitmask of events to wait for 20121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Return Value: 0 if successful and bit mask updated with 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of events triggerred, 20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * otherwise error code 20151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int wait_events(MGSLPC_INFO * info, int __user *mask_ptr) 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int s; 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc=0; 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount cprev, cnow; 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int events; 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int mask; 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct _input_signal_events oldsigs, newsigs; 20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DECLARE_WAITQUEUE(wait, current); 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COPY_FROM_USER(rc,&mask, mask_ptr, sizeof(int)); 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rc) 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 2030d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 20321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("wait_events(%s,%d)\n", info->device_name, mask); 20331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 20351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return immediately if state matches requested events */ 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s = info->serial_signals; 20391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds events = mask & 20401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ( ((s & SerialSignal_DSR) ? MgslEvent_DsrActive:MgslEvent_DsrInactive) + 20411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) + 20421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) + 20431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) ); 20441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (events) { 20451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 20461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 20471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save current irq counts */ 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cprev = info->icount; 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oldsigs = info->input_signal_events; 2052d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->params.mode == MGSL_MODE_HDLC) && 20541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (mask & MgslEvent_ExitHuntMode)) 20551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, IRQ_EXITHUNT); 2056d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_wait_queue(&info->event_wait_q, &wait); 2059d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 2061d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2062d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(;;) { 20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule(); 20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) { 20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -ERESTARTSYS; 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2069d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get current irq counts */ 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow = info->icount; 20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs = info->input_signal_events; 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if no change, wait aborted for some reason */ 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (newsigs.dsr_up == oldsigs.dsr_up && 20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.dsr_down == oldsigs.dsr_down && 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.dcd_up == oldsigs.dcd_up && 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.dcd_down == oldsigs.dcd_down && 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.cts_up == oldsigs.cts_up && 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.cts_down == oldsigs.cts_down && 20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.ri_up == oldsigs.ri_up && 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.ri_down == oldsigs.ri_down && 20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow.exithunt == cprev.exithunt && 20871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow.rxidle == cprev.rxidle) { 20881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -EIO; 20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds events = mask & 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ( (newsigs.dsr_up != oldsigs.dsr_up ? MgslEvent_DsrActive:0) + 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.dsr_down != oldsigs.dsr_down ? MgslEvent_DsrInactive:0) + 20951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.dcd_up != oldsigs.dcd_up ? MgslEvent_DcdActive:0) + 20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.dcd_down != oldsigs.dcd_down ? MgslEvent_DcdInactive:0) + 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.cts_up != oldsigs.cts_up ? MgslEvent_CtsActive:0) + 20981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.cts_down != oldsigs.cts_down ? MgslEvent_CtsInactive:0) + 20991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.ri_up != oldsigs.ri_up ? MgslEvent_RiActive:0) + 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.ri_down != oldsigs.ri_down ? MgslEvent_RiInactive:0) + 21011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (cnow.exithunt != cprev.exithunt ? MgslEvent_ExitHuntMode:0) + 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (cnow.rxidle != cprev.rxidle ? MgslEvent_IdleReceived:0) ); 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (events) 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2105d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 21061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cprev = cnow; 21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oldsigs = newsigs; 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2109d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 21101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_wait_queue(&info->event_wait_q, &wait); 21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_RUNNING); 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mask & MgslEvent_ExitHuntMode) { 21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!waitqueue_active(&info->event_wait_q)) 21161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, IRQ_EXITHUNT); 21171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 21201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rc == 0) 21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(rc, events, mask_ptr); 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 21231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int modem_input_wait(MGSLPC_INFO *info,int arg) 21261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount cprev, cnow; 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DECLARE_WAITQUEUE(wait, current); 21311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save current irq counts */ 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cprev = info->icount; 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_wait_queue(&info->status_event_wait_q, &wait); 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(;;) { 21401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule(); 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) { 21421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -ERESTARTSYS; 21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get new irq counts */ 21471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow = info->icount; 21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 21501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 21511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if no change, wait aborted for some reason */ 21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -EIO; 21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check for change in caller specified modem input */ 21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((arg & TIOCM_RNG && cnow.rng != cprev.rng) || 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (arg & TIOCM_DSR && cnow.dsr != cprev.dsr) || 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (arg & TIOCM_CD && cnow.dcd != cprev.dcd) || 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (arg & TIOCM_CTS && cnow.cts != cprev.cts)) { 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = 0; 21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cprev = cnow; 21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_wait_queue(&info->status_event_wait_q, &wait); 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_RUNNING); 21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 21731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* return the state of the serial control and status signals 21761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 21771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tiocmget(struct tty_struct *tty, struct file *file) 21781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 21801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int result; 21811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 21821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 21841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 21851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 21861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS:0) + 21881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR:0) + 21891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((info->serial_signals & SerialSignal_DCD) ? TIOCM_CAR:0) + 21901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((info->serial_signals & SerialSignal_RI) ? TIOCM_RNG:0) + 21911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((info->serial_signals & SerialSignal_DSR) ? TIOCM_DSR:0) + 21921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((info->serial_signals & SerialSignal_CTS) ? TIOCM_CTS:0); 21931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 21951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):%s tiocmget() value=%08X\n", 21961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, result ); 21971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return result; 21981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* set modem control signals (DTR/RTS) 22011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 22021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tiocmset(struct tty_struct *tty, struct file *file, 22031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear) 22041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 22061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 22071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 22091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):%s tiocmset(%x,%x)\n", 22101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name, set, clear); 22111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 22131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS; 22141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 22151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DTR; 22161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 22171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~SerialSignal_RTS; 22181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 22191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~SerialSignal_DTR; 22201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 22221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 22231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 22241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 22261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set or clear transmit break condition 22291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 22301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: tty pointer to tty instance data 22311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * break_state -1=set break condition, 0=clear 22321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 22339e98966c7bb94355689478bc84cc3e0c190f977eAlan Coxstatic int mgslpc_break(struct tty_struct *tty, int break_state) 22341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 22361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 2237d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 22391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_break(%s,%d)\n", 22401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, break_state); 2241d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_break")) 22439e98966c7bb94355689478bc84cc3e0c190f977eAlan Cox return -EINVAL; 22441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 22461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (break_state == -1) 22471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA+DAFO, BIT6); 2248d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik else 22491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA+DAFO, BIT6); 22501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 22519e98966c7bb94355689478bc84cc3e0c190f977eAlan Cox return 0; 22521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Service an IOCTL request 2255d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 22561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 2257d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 22581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty pointer to tty instance data 22591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * file pointer to associated file object for device 22601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * cmd IOCTL command code 22611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * arg command argument/context 2262d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 22631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Return Value: 0 if success, otherwise error code 22641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 22651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_ioctl(struct tty_struct *tty, struct file * file, 22661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int cmd, unsigned long arg) 22671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 2269d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 22711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_ioctl %s cmd=%08X\n", __FILE__,__LINE__, 22721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name, cmd ); 2273d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_ioctl")) 22751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 22761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && 22781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { 22791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->flags & (1 << TTY_IO_ERROR)) 22801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EIO; 22811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ioctl_common(info, cmd, arg); 22841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2286cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg) 22871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 22891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount cnow; /* kernel counter temps */ 22901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct serial_icounter_struct __user *p_cuser; /* user space */ 22911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __user *argp = (void __user *)arg; 22921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 2293d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cmd) { 22951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGPARAMS: 22961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_params(info, argp); 22971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCSPARAMS: 22981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_params(info, argp); 22991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGTXIDLE: 23001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_txidle(info, argp); 23011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCSTXIDLE: 23021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_txidle(info, (int)arg); 23031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGIF: 23041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_interface(info, argp); 23051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCSIF: 23061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_interface(info,(int)arg); 23071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCTXENABLE: 23081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_txenable(info,(int)arg); 23091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCRXENABLE: 23101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_rxenable(info,(int)arg); 23111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCTXABORT: 23121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tx_abort(info); 23131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGSTATS: 23141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_stats(info, argp); 23151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCWAITEVENT: 23161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return wait_events(info, argp); 23171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCMIWAIT: 23181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return modem_input_wait(info,(int)arg); 23191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCGICOUNT: 23201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 23211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow = info->icount; 23221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 23231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_cuser = argp; 23241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.cts, &p_cuser->cts); 23251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.dsr, &p_cuser->dsr); 23271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.rng, &p_cuser->rng); 23291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.dcd, &p_cuser->dcd); 23311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.rx, &p_cuser->rx); 23331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.tx, &p_cuser->tx); 23351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.frame, &p_cuser->frame); 23371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.overrun, &p_cuser->overrun); 23391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.parity, &p_cuser->parity); 23411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.brk, &p_cuser->brk); 23431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.buf_overrun, &p_cuser->buf_overrun); 23451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 23471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 23481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOIOCTLCMD; 23491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 23511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set new termios settings 2354d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 23551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 2356d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 23571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty pointer to tty structure 23581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * termios pointer to buffer to hold returned old termios 23591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2360606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Coxstatic void mgslpc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) 23611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 23621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 23631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 2364d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 23661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_set_termios %s\n", __FILE__,__LINE__, 23671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver->name ); 2368d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just return if nothing has changed */ 23701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((tty->termios->c_cflag == old_termios->c_cflag) 2371d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik && (RELEVANT_IFLAG(tty->termios->c_iflag) 23721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == RELEVANT_IFLAG(old_termios->c_iflag))) 23731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 23741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_change_params(info); 23761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Handle transition to B0 status */ 23781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (old_termios->c_cflag & CBAUD && 23791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !(tty->termios->c_cflag & CBAUD)) { 23801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); 23811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 23821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 23831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 23841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2385d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Handle transition away from B0 status */ 23871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(old_termios->c_cflag & CBAUD) && 23881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->termios->c_cflag & CBAUD) { 23891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DTR; 2390d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (!(tty->termios->c_cflag & CRTSCTS) || 23911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !test_bit(TTY_THROTTLED, &tty->flags)) { 23921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS; 23931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 23951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 23961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 23971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2398d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Handle turning off CRTSCTS */ 24001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (old_termios->c_cflag & CRTSCTS && 24011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !(tty->termios->c_cflag & CRTSCTS)) { 24021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->hw_stopped = 0; 24031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_release(tty); 24041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_close(struct tty_struct *tty, struct file * filp) 24081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 24101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_close")) 24121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 2413d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 24151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_close(%s) entry, count=%d\n", 24161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, info->count); 2417d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->count) 24191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 24201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_hung_up_p(filp)) 24221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 2423d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((tty->count == 1) && (info->count != 1)) { 24251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 24261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty->count is 1 and the tty structure will be freed. 24271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info->count should be one in this case. 24281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if it's not, correct it so that the port is shutdown. 24291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 24301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("mgslpc_close: bad refcount; tty->count is 1, " 24311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "info->count is %d\n", info->count); 24321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->count = 1; 24331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2434d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->count--; 2436d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if at least one open remaining, leave hardware active */ 24381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->count) 24391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 2440d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags |= ASYNC_CLOSING; 2442d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2443d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* set tty->closing to notify line discipline to 24441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * only process XON/XOFF characters. Only the N_TTY 24451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * discipline appears to use this (ppp does not). 24461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 24471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->closing = 1; 2448d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for transmit data to clear all layers */ 2450d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) { 24521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 24531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_close(%s) calling tty_wait_until_sent\n", 24541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 24551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wait_until_sent(tty, info->closing_wait); 24561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2457d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->flags & ASYNC_INITIALIZED) 24591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_wait_until_sent(tty, info->timeout); 24601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2461978e595f88a1fba5869aa42a4af4fba36f33ecacAlan Cox mgslpc_flush_buffer(tty); 24621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2463978e595f88a1fba5869aa42a4af4fba36f33ecacAlan Cox tty_ldisc_flush(tty); 2464d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds shutdown(info); 2466d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->closing = 0; 24681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tty = NULL; 2469d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->blocked_open) { 24711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->close_delay) { 24721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(jiffies_to_msecs(info->close_delay)); 24731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->open_wait); 24751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2476d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); 2478d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->close_wait); 2480d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2481d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikcleanup: 24821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 24831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__,__LINE__, 24841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver->name, info->count); 24851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Wait until the transmitter is empty. 24881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 24891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout) 24901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 24921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long orig_jiffies, char_time; 24931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info ) 24951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 24961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 24981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_wait_until_sent(%s) entry\n", 24991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 2500d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_wait_until_sent")) 25021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 25031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->flags & ASYNC_INITIALIZED)) 25051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 2506d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds orig_jiffies = jiffies; 2508d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Set check interval to 1/5 of estimated time to 25101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * send a character, and make it at least 1. The check 25111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interval should also be less than the timeout. 25121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: use tight timings here to satisfy the NIST-PCTS. 2513d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 2514d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( info->params.data_rate ) { 25161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time = info->timeout/(32 * 5); 25171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!char_time) 25181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time++; 25191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 25201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time = 1; 2521d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout) 25231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time = min_t(unsigned long, char_time, timeout); 2524d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 25261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (info->tx_active) { 25271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(jiffies_to_msecs(char_time)); 25281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) 25291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 25301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout && time_after(jiffies, orig_jiffies + timeout)) 25311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 25321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 25341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while ((info->tx_count || info->tx_active) && 25351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_enabled) { 25361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(jiffies_to_msecs(char_time)); 25371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) 25381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 25391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout && time_after(jiffies, orig_jiffies + timeout)) 25401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 25411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2543d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 25451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 25461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_wait_until_sent(%s) exit\n", 25471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 25481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Called by tty_hangup() when a hangup is signaled. 25511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the same as closing all open files for the port. 25521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 25531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_hangup(struct tty_struct *tty) 25541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 25551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 2556d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 25581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_hangup(%s)\n", 25591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 2560d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_hangup")) 25621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 25631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_flush_buffer(tty); 25651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds shutdown(info); 2566d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2567d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik info->count = 0; 25681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags &= ~ASYNC_NORMAL_ACTIVE; 25691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tty = NULL; 25701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->open_wait); 25721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Block the current process until the specified port 25751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * is ready to be opened. 25761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 25771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int block_til_ready(struct tty_struct *tty, struct file *filp, 25781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info) 25791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 25801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DECLARE_WAITQUEUE(wait, current); 25811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 25820fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool do_clocal = false; 25830fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool extra_count = false; 25841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 2585d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 25871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):block_til_ready on %s\n", 25881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, tty->driver->name ); 25891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){ 25911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* nonblock mode is set or port is not enabled */ 25921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just verify that callout device is not active */ 25931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags |= ASYNC_NORMAL_ACTIVE; 25941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 25951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->termios->c_cflag & CLOCAL) 25980fab6de09c71a976e5d765e1ff548b14be385153Joe Perches do_clocal = true; 25991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Wait for carrier detect and the line to become 26011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * free (i.e., not in use by the callout). While we are in 26021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this loop, info->count is dropped by one, so that 26031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * mgslpc_close() knows when to free things. We restore it upon 26041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * exit, either normal or abnormal. 26051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2606d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 26081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_wait_queue(&info->open_wait, &wait); 2609d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 26111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):block_til_ready before block on %s count=%d\n", 26121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, tty->driver->name, info->count ); 26131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock, flags); 26151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tty_hung_up_p(filp)) { 26160fab6de09c71a976e5d765e1ff548b14be385153Joe Perches extra_count = true; 26171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->count--; 26181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 26191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock, flags); 26201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->blocked_open++; 2621d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (1) { 26231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((tty->termios->c_cflag & CBAUD)) { 26241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 26251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; 26261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 26271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 26281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2629d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 2631d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)){ 26331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = (info->flags & ASYNC_HUP_NOTIFY) ? 26341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -EAGAIN : -ERESTARTSYS; 26351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 26361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2637d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 26391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 26401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 2641d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->flags & ASYNC_CLOSING) && 26431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (do_clocal || (info->serial_signals & SerialSignal_DCD)) ) { 26441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 26451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2646d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) { 26481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -ERESTARTSYS; 26491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 26501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2651d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 26531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):block_til_ready blocking on %s count=%d\n", 26541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, tty->driver->name, info->count ); 2655d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule(); 26571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2658d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_RUNNING); 26601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_wait_queue(&info->open_wait, &wait); 2661d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (extra_count) 26631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->count++; 26641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->blocked_open--; 2665d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 26671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):block_til_ready after blocking on %s count=%d\n", 26681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, tty->driver->name, info->count ); 2669d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!retval) 26711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->flags |= ASYNC_NORMAL_ACTIVE; 2672d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 26741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_open(struct tty_struct *tty, struct file * filp) 26771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 26781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info; 26791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval, line; 26801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 26811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2682d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* verify range of specified line number */ 26831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds line = tty->index; 26841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((line < 0) || (line >= mgslpc_device_count)) { 26851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_open with invalid line #%d.\n", 26861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,line); 26871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 26881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 26891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* find the info structure for the specified line */ 26911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = mgslpc_device_list; 26921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(info && info->line != line) 26931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = info->next_device; 26941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_open")) 26951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2696d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = info; 26981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tty = tty; 2699d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 27011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_open(%s), old ref count = %d\n", 27021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,tty->driver->name, info->count); 27031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If port is closing, signal caller to try again */ 27051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty_hung_up_p(filp) || info->flags & ASYNC_CLOSING){ 27061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->flags & ASYNC_CLOSING) 27071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds interruptible_sleep_on(&info->close_wait); 27081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = ((info->flags & ASYNC_HUP_NOTIFY) ? 27091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -EAGAIN : -ERESTARTSYS); 27101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 27111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2712d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; 27141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 27161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) { 27171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EBUSY; 27181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 27191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 27201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->count++; 27221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 27231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->count == 1) { 27251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1st open on this device, init hardware */ 27261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = startup(info); 27271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval < 0) 27281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 27291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = block_til_ready(tty, filp, info); 27321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) { 27331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 27341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):block_til_ready(%s) returned %d\n", 27351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, retval); 27361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 27371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 27401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_open(%s) success\n", 27411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name); 27421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 2743d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2744d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikcleanup: 27451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) { 27461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->count == 1) 27471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tty = NULL; /* tty layer will release tty struct */ 27481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(info->count) 27491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->count--; 27501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2751d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 27531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 27541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 27561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * /proc fs routines.... 27571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 27581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int line_info(char *buf, MGSLPC_INFO *info) 27601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 27611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char stat_buf[30]; 27621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 27631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 27641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = sprintf(buf, "%s:io:%04X irq:%d", 27661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name, info->io_base, info->irq_level); 27671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* output current serial signal states */ 27691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 27701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 27711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 2772d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds stat_buf[0] = 0; 27741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds stat_buf[1] = 0; 27751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 27761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|RTS"); 27771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_CTS) 27781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|CTS"); 27791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DTR) 27801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|DTR"); 27811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DSR) 27821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|DSR"); 27831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DCD) 27841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|CD"); 27851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RI) 27861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|RI"); 27871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 27891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " HDLC txok:%d rxok:%d", 27901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txok, info->icount.rxok); 27911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.txunder) 27921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " txunder:%d", info->icount.txunder); 27931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.txabort) 27941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " txabort:%d", info->icount.txabort); 27951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxshort) 2796d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik ret += sprintf(buf+ret, " rxshort:%d", info->icount.rxshort); 27971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxlong) 27981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " rxlong:%d", info->icount.rxlong); 27991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxover) 28001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " rxover:%d", info->icount.rxover); 28011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxcrc) 28021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " rxcrc:%d", info->icount.rxcrc); 28031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 28041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " ASYNC tx:%d rx:%d", 28051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.tx, info->icount.rx); 28061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.frame) 28071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " fe:%d", info->icount.frame); 28081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.parity) 28091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " pe:%d", info->icount.parity); 28101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.brk) 2811d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik ret += sprintf(buf+ret, " brk:%d", info->icount.brk); 28121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.overrun) 28131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " oe:%d", info->icount.overrun); 28141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2815d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 28161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Append serial signal status to end */ 28171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " %s\n", stat_buf+1); 2818d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 28191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, "txactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", 28201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_active,info->bh_requested,info->bh_running, 28211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh); 2822d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 28231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 28241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Called to print information about devices 28271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 28281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_read_proc(char *page, char **start, off_t off, int count, 28291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int *eof, void *data) 28301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len = 0, l; 28321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds off_t begin = 0; 28331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info; 2834d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 28351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len += sprintf(page, "synclink driver:%s\n", driver_version); 2836d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 28371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = mgslpc_device_list; 28381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while( info ) { 28391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds l = line_info(page + len, info); 28401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len += l; 28411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len+begin > off+count) 28421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 28431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len+begin < off) { 28441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds begin += len; 28451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = 0; 28461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 28471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = info->next_device; 28481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 28491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *eof = 1; 28511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdone: 28521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (off >= len+begin) 28531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 28541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *start = page + (off-begin); 28551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ((count < begin+len-off) ? count : begin+len-off); 28561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2858cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic int rx_alloc_buffers(MGSLPC_INFO *info) 28591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* each buffer has header and data */ 28611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_size = sizeof(RXBUF) + info->max_frame_size; 28621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* calculate total allocation size for 8 buffers */ 28641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_total_size = info->rx_buf_size * 8; 28651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* limit total allocated memory */ 28671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_buf_total_size > 0x10000) 28681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_total_size = 0x10000; 28691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* calculate number of buffers */ 28711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_count = info->rx_buf_total_size / info->rx_buf_size; 28721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf = kmalloc(info->rx_buf_total_size, GFP_KERNEL); 28741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_buf == NULL) 28751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 28761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_reset_buffers(info); 28781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 28791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2881cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_free_buffers(MGSLPC_INFO *info) 28821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2883735d5661d5c5f023a78fbe68e771e261040ff1b7Jesper Juhl kfree(info->rx_buf); 28841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf = NULL; 28851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2887cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic int claim_resources(MGSLPC_INFO *info) 28881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rx_alloc_buffers(info) < 0 ) { 28901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "Cant allocate rx buffer %s\n", info->device_name); 28911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_resources(info); 28921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2893d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik } 28941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 28951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2897cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void release_resources(MGSLPC_INFO *info) 28981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 29001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("release_resources(%s)\n", info->device_name); 29011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_free_buffers(info); 29021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 29031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Add the specified device instance data structure to the 29051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * global linked list of devices and increment the device count. 2906d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 29071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: info pointer to device instance data 29081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2909cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void mgslpc_add_device(MGSLPC_INFO *info) 29101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 29111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->next_device = NULL; 29121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->line = mgslpc_device_count; 29131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sprintf(info->device_name,"ttySLP%d",info->line); 2914d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->line < MAX_DEVICE_COUNT) { 29161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maxframe[info->line]) 29171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = maxframe[info->line]; 29181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dosyncppp = dosyncppp[info->line]; 29191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_count++; 2922d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!mgslpc_device_list) 29241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_list = info; 2925d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik else { 29261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *current_dev = mgslpc_device_list; 29271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while( current_dev->next_device ) 29281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds current_dev = current_dev->next_device; 29291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds current_dev->next_device = info; 29301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2931d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->max_frame_size < 4096) 29331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = 4096; 29341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (info->max_frame_size > 65535) 29351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = 65535; 2936d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "SyncLink PC Card %s:IO=%04X IRQ=%d\n", 29381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name, info->io_base, info->irq_level); 29391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2940af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 29411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_init(info); 29421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 29431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 29441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2945cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void mgslpc_remove_device(MGSLPC_INFO *remove_info) 29461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 29471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = mgslpc_device_list; 29481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *last = NULL; 29491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(info) { 29511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info == remove_info) { 29521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (last) 29531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last->next_device = info->next_device; 29541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 29551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_list = info->next_device; 2956af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 29571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_exit(info); 29581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 29591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_resources(info); 29601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(info); 29611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_count--; 29621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 29631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last = info; 29651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = info->next_device; 29661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 29681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29694af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowskistatic struct pcmcia_device_id mgslpc_ids[] = { 29704af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski PCMCIA_DEVICE_MANF_CARD(0x02c5, 0x0050), 29714af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski PCMCIA_DEVICE_NULL 29724af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski}; 29734af48c8c16dfc37400f63633373dd180b5540eadDominik BrodowskiMODULE_DEVICE_TABLE(pcmcia, mgslpc_ids); 29744af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski 29751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct pcmcia_driver mgslpc_driver = { 29761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .owner = THIS_MODULE, 29771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .drv = { 29781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "synclink_cs", 29791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 298015b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski .probe = mgslpc_probe, 2981cc3b4866bee996c922e875b8c8efe9f0d8803aaeDominik Brodowski .remove = mgslpc_detach, 29824af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski .id_table = mgslpc_ids, 298398e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski .suspend = mgslpc_suspend, 298498e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski .resume = mgslpc_resume, 29851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 29861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2987b68e31d0ebbcc909d1941f9f230c9d062a3a13d3Jeff Dikestatic const struct tty_operations mgslpc_ops = { 29881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = mgslpc_open, 29891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = mgslpc_close, 29901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = mgslpc_write, 29911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .put_char = mgslpc_put_char, 29921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_chars = mgslpc_flush_chars, 29931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = mgslpc_write_room, 29941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = mgslpc_chars_in_buffer, 29951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_buffer = mgslpc_flush_buffer, 29961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = mgslpc_ioctl, 29971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = mgslpc_throttle, 29981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = mgslpc_unthrottle, 29991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .send_xchar = mgslpc_send_xchar, 30001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .break_ctl = mgslpc_break, 30011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .wait_until_sent = mgslpc_wait_until_sent, 30021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read_proc = mgslpc_read_proc, 30031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = mgslpc_set_termios, 30041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = tx_pause, 30051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = tx_release, 30061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hangup = mgslpc_hangup, 30071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = tiocmget, 30081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = tiocmset, 30091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 30101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void synclink_cs_cleanup(void) 30121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 30131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 30141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Unloading %s: version %s\n", driver_name, driver_version); 30161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(mgslpc_device_list) 30181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_remove_device(mgslpc_device_list); 30191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (serial_driver) { 30211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = tty_unregister_driver(serial_driver))) 30221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d) failed to unregister tty driver err=%d\n", 30231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,rc); 30241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(serial_driver); 30251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 30261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pcmcia_unregister_driver(&mgslpc_driver); 30281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 30291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init synclink_cs_init(void) 30311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 30321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 30331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (break_on_load) { 30351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_get_text_ptr(); 30361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BREAKPOINT(); 30371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 30381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s %s\n", driver_name, driver_version); 30401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = pcmcia_register_driver(&mgslpc_driver)) < 0) 30421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 30431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver = alloc_tty_driver(MAX_DEVICE_COUNT); 30451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!serial_driver) { 30461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -ENOMEM; 30471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto error; 30481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 30491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Initialize the tty_driver structure */ 3051d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 30521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->owner = THIS_MODULE; 30531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->driver_name = "synclink_cs"; 30541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->name = "ttySLP"; 30551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->major = ttymajor; 30561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->minor_start = 64; 30571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->type = TTY_DRIVER_TYPE_SERIAL; 30581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->subtype = SERIAL_TYPE_NORMAL; 30591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->init_termios = tty_std_termios; 30601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->init_termios.c_cflag = 30611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds B9600 | CS8 | CREAD | HUPCL | CLOCAL; 30621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->flags = TTY_DRIVER_REAL_RAW; 30631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_set_operations(serial_driver, &mgslpc_ops); 30641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = tty_register_driver(serial_driver)) < 0) { 30661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):Couldn't register serial driver\n", 30671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__); 30681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(serial_driver); 30691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver = NULL; 30701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto error; 30711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3072d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 30731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s %s, tty major#%d\n", 30741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver_name, driver_version, 30751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->major); 3076d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 30771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 30781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserror: 30801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds synclink_cs_cleanup(); 30811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 30821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 30831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3084d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void __exit synclink_cs_exit(void) 30851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 30861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds synclink_cs_cleanup(); 30871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 30881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(synclink_cs_init); 30901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(synclink_cs_exit); 30911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_set_rate(MGSLPC_INFO *info, unsigned char channel, unsigned int rate) 30931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 30941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int M, N; 30951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 30961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3097d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* note:standard BRG mode is broken in V3.2 chip 3098d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * so enhanced mode is always used 30991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 31001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rate) { 31021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N = 3686400 / rate; 31031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!N) 31041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N = 1; 31051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N >>= 1; 31061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (M = 1; N > 64 && M < 16; M++) 31071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N >>= 1; 31081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N--; 31091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* BGR[5..0] = N 31111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BGR[9..6] = M 31121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BGR[7..0] contained in BGR register 31131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BGR[9..8] contained in CCR2[7..6] 31141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * divisor = (N+1)*2^M 31151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: M *must* not be zero (causes asymetric duty cycle) 3117d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (unsigned char) (channel + BGR), 31191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (unsigned char) ((M << 6) + N)); 31201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, (unsigned char) (channel + CCR2)) & 0x3f; 31211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= ((M << 4) & 0xc0); 31221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (unsigned char) (channel + CCR2), val); 31231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 31241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 31251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Enabled the AUX clock output at the specified frequency. 31271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 31281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void enable_auxclk(MGSLPC_INFO *info) 31291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 31301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 3131d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MODE 31331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 MDS[1..0] 10 = transparent HDLC mode 31351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 ADM Address Mode, 0 = no addr recognition 31361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 TMD Timer Mode, 0 = external 31371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 RAC Receiver Active, 0 = inactive 31381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RTS 0=RTS active during xmit, 1=RTS always active 31391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TRS Timer Resolution, 1=512 31401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TLP Test Loop, 0 = no loop 31411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1000 0010 3143d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x82; 3145d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3146d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* channel B RTS is used to enable AUXCLK driver on SP505 */ 31471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed) 31481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; 31491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + MODE, val); 3150d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR0 31521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 PU Power Up, 1=active, 0=power down 31541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 MCE Master Clock Enable, 1=enabled 31551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Reserved, 0 31561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..02 SC[2..0] Encoding 31571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 SM[1..0] Serial Mode, 00=HDLC 31581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11000000 3160d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR0, 0xc0); 3162d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR1 31641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 SFLG Shared Flag, 0 = disable shared flags 31661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 GALP Go Active On Loop, 0 = not used 31671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 GLP Go On Loop, 0 = not used 31681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ODS Output Driver Select, 1=TxD is push-pull output 31691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 ITF Interframe Time Fill, 0=mark, 1=flag 31701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02..00 CM[2..0] Clock Mode 31711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 0111 3173d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR1, 0x17); 3175d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR2 (Channel B) 31771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 BGR[9..8] Baud rate bits 9..8 31791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value 31801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 SSEL Clock source select, 1=submode b 31811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 TOE 0=TxCLK is input, 1=TxCLK is output 31821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RWX Read/Write Exchange 0=disabled 31831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 C32, CRC select, 0=CRC-16, 1=CRC-32 31841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DIV, data inversion 0=disabled, 1=enabled 31851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0011 1000 3187d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed) 31891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR2, 0x38); 31901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 31911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR2, 0x30); 3192d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR4 31941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 MCK4 Master Clock Divide by 4, 1=enabled 31961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled 31971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 TST1 Test Pin, 0=normal operation 31981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ICD Ivert Carrier Detect, 1=enabled (active low) 31991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..02 Reserved, must be 0 32001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 RFT[1..0] RxFIFO Threshold 00=32 bytes 32011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 0000 3203d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR4, 0x50); 3205d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 32061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if auxclk not enabled, set internal BRG so 32071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * CTS transitions can be detected (requires TxC) 3208d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed) 32101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHB, info->params.clock_speed); 32111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 32121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHB, 921600); 32131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 32141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3215d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void loopback_enable(MGSLPC_INFO *info) 32161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 32171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 3218d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3219d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* CCR1:02..00 CM[2..0] Clock Mode = 111 (clock mode 7) */ 32201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + CCR1) | (BIT2 + BIT1 + BIT0); 32211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR1, val); 3222d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3223d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* CCR2:04 SSEL Clock source select, 1=submode b */ 32241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + CCR2) | (BIT4 + BIT5); 32251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR2, val); 3226d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3227d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* set LinkSpeed if available, otherwise default to 2Mbps */ 32281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.clock_speed) 32291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.clock_speed); 32301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 32311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, 1843200); 3232d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3233d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:00 TLP Test Loop, 1=loopback enabled */ 32341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + MODE) | BIT0; 32351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 32361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 32371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3238cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void hdlc_mode(MGSLPC_INFO *info) 32391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 32401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 32411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char clkmode, clksubmode; 32421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3243d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* disable all interrupts */ 32441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, 0xffff); 32451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, 0xffff); 32461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, 0xff); 3247d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3248d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* assume clock mode 0a, rcv=RxC xmt=TxC */ 32491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = clksubmode = 0; 32501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_RXC_DPLL 32511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && info->params.flags & HDLC_FLAG_TXC_DPLL) { 3252d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 7a, rcv = DPLL, xmt = DPLL */ 32531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 7; 32541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->params.flags & HDLC_FLAG_RXC_BRG 32551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && info->params.flags & HDLC_FLAG_TXC_BRG) { 3256d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 7b, rcv = BRG, xmt = BRG */ 32571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 7; 32581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clksubmode = 1; 32591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->params.flags & HDLC_FLAG_RXC_DPLL) { 32601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_TXC_BRG) { 3261d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 6b, rcv = DPLL, xmt = BRG/16 */ 32621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 6; 32631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clksubmode = 1; 32641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3265d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 6a, rcv = DPLL, xmt = TxC */ 32661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 6; 32671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 32681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->params.flags & HDLC_FLAG_TXC_BRG) { 3269d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 0b, rcv = RxC, xmt = BRG */ 32701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clksubmode = 1; 32711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3272d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 32731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MODE 32741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 MDS[1..0] 10 = transparent HDLC mode 32761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 ADM Address Mode, 0 = no addr recognition 32771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 TMD Timer Mode, 0 = external 32781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 RAC Receiver Active, 0 = inactive 32791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RTS 0=RTS active during xmit, 1=RTS always active 32801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TRS Timer Resolution, 1=512 32811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TLP Test Loop, 0 = no loop 32821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1000 0010 3284d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x82; 32861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.loopback) 32871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; 3288d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3289d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* preserve RTS state */ 32901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 32911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; 32921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 3293d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 32941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR0 32951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 PU Power Up, 1=active, 0=power down 32971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 MCE Master Clock Enable, 1=enabled 32981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Reserved, 0 32991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..02 SC[2..0] Encoding 33001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 SM[1..0] Serial Mode, 00=HDLC 33011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11000000 3303d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 33041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0xc0; 33051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->params.encoding) 33061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 33071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_NRZI: 33081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT3; 33091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 33101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_BIPHASE_SPACE: 33111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4; 33121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; // FM0 33131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_BIPHASE_MARK: 33141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4 + BIT2; 33151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; // FM1 33161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_BIPHASE_LEVEL: 33171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4 + BIT3; 33181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; // Manchester 33191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 33201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR0, val); 3321d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 33221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR1 33231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 SFLG Shared Flag, 0 = disable shared flags 33251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 GALP Go Active On Loop, 0 = not used 33261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 GLP Go On Loop, 0 = not used 33271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ODS Output Driver Select, 1=TxD is push-pull output 33281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 ITF Interframe Time Fill, 0=mark, 1=flag 33291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02..00 CM[2..0] Clock Mode 33301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 0000 3332d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 33331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x10 + clkmode; 33341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR1, val); 3335d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 33361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR2 33371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 BGR[9..8] Baud rate bits 9..8 33391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value 33401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 SSEL Clock source select, 1=submode b 33411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 TOE 0=TxCLK is input, 0=TxCLK is input 33421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RWX Read/Write Exchange 0=disabled 33431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 C32, CRC select, 0=CRC-16, 1=CRC-32 33441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DIV, data inversion 0=disabled, 1=enabled 33451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3347d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 33481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 33491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clkmode == 2 || clkmode == 3 || clkmode == 6 33501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || clkmode == 7 || (clkmode == 0 && clksubmode == 1)) 33511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 33521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clksubmode) 33531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4; 33541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type == HDLC_CRC_32_CCITT) 33551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT1; 33561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.encoding == HDLC_ENCODING_NRZB) 33571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; 33581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR2, val); 3359d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 33601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR3 33611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 PRE[1..0] Preamble count 00=1, 01=2, 10=4, 11=8 33631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 EPT Enable preamble transmission, 1=enabled 33641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 RADD Receive address pushed to FIFO, 0=disabled 33651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 CRL CRC Reset Level, 0=FFFF 33661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RCRC Rx CRC 0=On 1=Off 33671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TCRC Tx CRC 0=On 1=Off 33681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 PSD DPLL Phase Shift Disable 33691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3371d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 33721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 33731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type == HDLC_CRC_NONE) 33741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2 + BIT1; 33751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE) 33761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 33771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->params.preamble_length) 33781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 33791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_LENGTH_16BITS: 33801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 33811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 33821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_LENGTH_32BITS: 33831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 33841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 33851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_LENGTH_64BITS: 33861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT7 + BIT6; 33871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 33881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 33891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR3, val); 3390d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3391d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* PRE - Preamble pattern */ 33921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0; 33931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->params.preamble) 33941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 33951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_FLAGS: val = 0x7e; break; 33961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_10: val = 0xaa; break; 33971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_01: val = 0x55; break; 33981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_ONES: val = 0xff; break; 33991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 34001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + PRE, val); 3401d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR4 34031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 MCK4 Master Clock Divide by 4, 1=enabled 34051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled 34061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 TST1 Test Pin, 0=normal operation 34071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ICD Ivert Carrier Detect, 1=enabled (active low) 34081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..02 Reserved, must be 0 34091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 RFT[1..0] RxFIFO Threshold 00=32 bytes 34101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 0000 3412d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x50; 34141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR4, val); 34151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_RXC_DPLL) 34161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.clock_speed * 16); 34171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 34181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.clock_speed); 3419d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RLCR Receive length check register 34211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 7 1=enable receive length check 34231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 6..0 Max frame length = (RL + 1) * 32 3424d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + RLCR, 0); 3426d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* XBCH Transmit Byte Count High 34281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 DMA mode, 0 = interrupt driven 34301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 NRM, 0=ABM (ignored) 34311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 CAS Carrier Auto Start 34321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 XC Transmit Continuously (ignored) 34331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..00 XBC[10..8] Transmit byte count bits 10..8 34341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3436d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 34381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_DCD) 34391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 34401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + XBCH, val); 34411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enable_auxclk(info); 34421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.loopback || info->testing_irq) 34431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds loopback_enable(info); 34441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_CTS) 34451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 34461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHB, IRQ_CTS); 3447d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* PVR[3] 1=AUTO CTS active */ 34481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + PVR, BIT3); 34491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 34501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + PVR, BIT3); 34511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, 34531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_RXEOM + IRQ_RXFIFO + IRQ_ALLSENT + 34541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_UNDERRUN + IRQ_TXFIFO); 34551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET); 34561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_command_complete(info, CHA); 34571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_reg16(info, CHA + ISR); /* clear pending IRQs */ 3458d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Master clock mode enabled above to allow reset commands 34601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to complete even if no data clocks are present. 34611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Disable master clock mode for normal communications because 34631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * V3.2 of the ESCC2 has a bug that prevents the transmit all sent 34641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * IRQ when in master clock mode. 34651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Leave master clock mode enabled for IRQ test because the 34671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * timer IRQ used by the test can only happen in master clock mode. 3468d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->testing_irq) 34701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + CCR0, BIT6); 34711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_set_idle(info); 34731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 34751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_stop(info); 34761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 34771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3478cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_stop(MGSLPC_INFO *info) 34791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 34801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 34811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_stop(%s)\n", 34821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 3483d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3484d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:03 RAC Receiver Active, 0=inactive */ 34851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + MODE, BIT3); 34861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34870fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_enabled = false; 34880fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_overflow = false; 34891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 34901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3491cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_start(MGSLPC_INFO *info) 34921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 34931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 34941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_start(%s)\n", 34951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 34961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_reset_buffers(info); 34980fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_enabled = false; 34990fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_overflow = false; 35001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3501d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:03 RAC Receiver Active, 1=active */ 35021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + MODE, BIT3); 35031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35040fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_enabled = true; 35051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 35061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3507cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void tx_start(MGSLPC_INFO *info) 35081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 35091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 35101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):tx_start(%s)\n", 35111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 3512d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count) { 35141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If auto RTS enabled and RTS is inactive, then assert */ 35151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RTS and set a flag indicating that the driver should */ 35161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* negate RTS when the transmission completes. */ 35170fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->drop_rts_on_tx_done = false; 35181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_RTS) { 35201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 35211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->serial_signals & SerialSignal_RTS)) { 35221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS; 35231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 35240fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->drop_rts_on_tx_done = true; 35251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 35261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 35271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) { 35291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) { 35300fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = true; 35311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_ready(info); 35321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 35331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 35340fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = true; 35351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_ready(info); 353640565f1962c5be9b9e285e05af01ab7771534868Jiri Slaby mod_timer(&info->tx_timer, jiffies + 353740565f1962c5be9b9e285e05af01ab7771534868Jiri Slaby msecs_to_jiffies(5000)); 35381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 35391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 35401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_enabled) 35420fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_enabled = true; 35431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 35441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3545cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void tx_stop(MGSLPC_INFO *info) 35461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 35471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 35481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):tx_stop(%s)\n", 35491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 3550d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3551d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik del_timer(&info->tx_timer); 35521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35530fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_enabled = false; 35540fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 35551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 35561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Reset the adapter to a known state and prepare it for further use. 35581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3559cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void reset_device(MGSLPC_INFO *info) 35601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3561d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* power up both channels (set BIT7) */ 35621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR0, 0x80); 35631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR0, 0x80); 35641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, 0); 35651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + MODE, 0); 3566d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3567d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* disable all interrupts */ 35681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, 0xffff); 35691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, 0xffff); 35701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, 0xff); 3571d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* PCR Port Configuration Register 35731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..04 DEC[3..0] Serial I/F select outputs 35751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 output, 1=AUTO CTS control enabled 35761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RI Ring Indicator input 0=active 35771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 DSR input 0=active 35781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DTR output 0=active 35791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0110 3581d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, PCR, 0x06); 3583d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* PVR Port Value Register 35851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..04 DEC[3..0] Serial I/F select (0000=disabled) 35871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 AUTO CTS output 1=enabled 35881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RI Ring Indicator input 35891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 DSR input 35901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DTR output (1=inactive) 35911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0001 35931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 35941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// write_reg(info, PVR, PVR_DTR); 3595d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* IPC Interrupt Port Configuration 35971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 VIS 1=Masked interrupts visible 35991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06..05 Reserved, 0 36001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..03 SLA Slave address, 00 ignored 36011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 CASM Cascading Mode, 1=daisy chain 36021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 IC[1..0] Interrupt Config, 01=push-pull output, active low 36031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0101 3605d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 36061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, IPC, 0x05); 36071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 36081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3609cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void async_mode(MGSLPC_INFO *info) 36101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 36111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 36121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3613d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* disable all interrupts */ 36141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, 0xffff); 36151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, 0xffff); 36161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, 0xff); 3617d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MODE 36191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 Reserved, 0 36211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 FRTS RTS State, 0=active 36221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 FCTS Flow Control on CTS 36231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 FLON Flow Control Enable 36241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 RAC Receiver Active, 0 = inactive 36251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RTS 0=Auto RTS, 1=manual RTS 36261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TRS Timer Resolution, 1=512 36271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TLP Test Loop, 0 = no loop 36281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0110 3630d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 36311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x06; 36321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.loopback) 36331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; 3634d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3635d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* preserve RTS state */ 36361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->serial_signals & SerialSignal_RTS)) 36371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 36381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 3639d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR0 36411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 PU Power Up, 1=active, 0=power down 36431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 MCE Master Clock Enable, 1=enabled 36441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Reserved, 0 36451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..02 SC[2..0] Encoding, 000=NRZ 36461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 SM[1..0] Serial Mode, 11=Async 36471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1000 0011 3649d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 36501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR0, 0x83); 3651d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR1 36531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..05 Reserved, 0 36551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ODS Output Driver Select, 1=TxD is push-pull output 36561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 BCR Bit Clock Rate, 1=16x 36571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02..00 CM[2..0] Clock Mode, 111=BRG 36581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 1111 3660d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 36611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR1, 0x1f); 3662d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR2 (channel A) 36641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 BGR[9..8] Baud rate bits 9..8 36661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value 36671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 SSEL Clock source select, 1=submode b 36681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 TOE 0=TxCLK is input, 0=TxCLK is input 36691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RWX Read/Write Exchange 0=disabled 36701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 Reserved, 0 36711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DIV, data inversion 0=disabled, 1=enabled 36721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 0000 3674d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 36751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR2, 0x10); 3676d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR3 36781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..01 Reserved, 0 36801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 PSD DPLL Phase Shift Disable 36811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3683d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 36841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR3, 0); 3685d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR4 36871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 MCK4 Master Clock Divide by 4, 1=enabled 36891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled 36901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 TST1 Test Pin, 0=normal operation 36911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ICD Ivert Carrier Detect, 1=enabled (active low) 36921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..00 Reserved, must be 0 36931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 0000 3695d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 36961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR4, 0x50); 36971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.data_rate * 16); 3698d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* DAFO Data Format 37001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 37011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 Reserved, 0 37021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 XBRK transmit break, 0=normal operation 37031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Stop bits (0=1, 1=2) 37041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..03 PAR[1..0] Parity (01=odd, 10=even) 37051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 PAREN Parity Enable 37061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 CHL[1..0] Character Length (00=8, 01=7) 37071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3708d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 37091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 37101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.data_bits != 8) 37111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; /* 7 bits */ 37121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.stop_bits != 1) 37131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 37141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.parity != ASYNC_PARITY_NONE) 37151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 37161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; /* Parity enable */ 37171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.parity == ASYNC_PARITY_ODD) 37181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT3; 37191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 37201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4; 37211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + DAFO, val); 3723d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 37241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RFC Rx FIFO Control 37251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 37261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 Reserved, 0 37271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 DPS, 1=parity bit not stored in data byte 37281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 DXS, 0=all data stored in FIFO (including XON/XOFF) 37291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 RFDF Rx FIFO Data Format, 1=status byte stored in FIFO 37301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..02 RFTH[1..0], rx threshold, 11=16 status + 16 data byte 37311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 Reserved, 0 37321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TCDE Terminate Char Detect Enable, 0=disabled 37331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 37341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 1100 3735d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 37361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + RFC, 0x5c); 3737d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 37381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RLCR Receive length check register 37391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 37401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Max frame length = (RL + 1) * 32 3741d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 37421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + RLCR, 0); 3743d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 37441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* XBCH Transmit Byte Count High 37451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 37461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 DMA mode, 0 = interrupt driven 37471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 NRM, 0=ABM (ignored) 37481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 CAS Carrier Auto Start 37491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 XC Transmit Continuously (ignored) 37501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..00 XBC[10..8] Transmit byte count bits 10..8 37511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 37521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3753d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 37541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 37551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_DCD) 37561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 37571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + XBCH, val); 37581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_CTS) 37591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, IRQ_CTS); 3760d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3761d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:03 RAC Receiver Active, 1=active */ 37621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + MODE, BIT3); 37631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enable_auxclk(info); 37641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_CTS) { 37651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHB, IRQ_CTS); 3766d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* PVR[3] 1=AUTO CTS active */ 37671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + PVR, BIT3); 37681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 37691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + PVR, BIT3); 37701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, 37711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_RXEOM + IRQ_RXFIFO + IRQ_BREAK_ON + IRQ_RXTIME + 37721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_ALLSENT + IRQ_TXFIFO); 37731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET); 37741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_command_complete(info, CHA); 37751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_reg16(info, CHA + ISR); /* clear pending IRQs */ 37761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 37771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set the HDLC idle mode for the transmitter. 37791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3780cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void tx_set_idle(MGSLPC_INFO *info) 37811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3782d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* Note: ESCC2 only supports flags and one idle modes */ 37831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->idle_mode == HDLC_TXIDLE_FLAGS) 37841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + CCR1, BIT3); 37851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 37861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + CCR1, BIT3); 37871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 37881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* get state of the V24 status (input) signals. 37901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3791cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void get_signals(MGSLPC_INFO *info) 37921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 37931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char status = 0; 3794d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3795d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* preserve DTR and RTS */ 37961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS; 37971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (read_reg(info, CHB + VSTR) & BIT7) 37991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DCD; 38001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (read_reg(info, CHB + STAR) & BIT1) 38011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_CTS; 38021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = read_reg(info, CHA + PVR); 38041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(status & PVR_RI)) 38051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RI; 38061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(status & PVR_DSR)) 38071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DSR; 38081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 38091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set the state of DTR and RTS based on contents of 38111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * serial_signals member of device extension. 38121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3813cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void set_signals(MGSLPC_INFO *info) 38141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 38161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + MODE); 38181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) { 38191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 38201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= ~BIT6; 38211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 38221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 38231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 38241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 38251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; 38261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 38271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= ~BIT2; 38281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 38301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DTR) 38321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + PVR, PVR_DTR); 38331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 38341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + PVR, PVR_DTR); 38351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 38361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3837cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_reset_buffers(MGSLPC_INFO *info) 38381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds RXBUF *buf; 38401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 38411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_put = 0; 38431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_get = 0; 38441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_frame_count = 0; 38451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i=0 ; i < info->rx_buf_count ; i++) { 38461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = (RXBUF*)(info->rx_buf + (i * info->rx_buf_size)); 38471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->status = buf->count = 0; 38481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 38501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Attempt to return a received HDLC frame 38521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Only frames received without errors are returned. 38531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 38540fab6de09c71a976e5d765e1ff548b14be385153Joe Perches * Returns true if frame returned, otherwise false 38551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 38560fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool rx_get_frame(MGSLPC_INFO *info) 38571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short status; 38591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds RXBUF *buf; 38601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int framesize = 0; 38611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 38621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tty = info->tty; 38630fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool return_frame = false; 3864d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 38651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_frame_count == 0) 38660fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return false; 38671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = (RXBUF*)(info->rx_buf + (info->rx_get * info->rx_buf_size)); 38691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = buf->status; 38711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 07 VFR 1=valid frame 38731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 RDO 1=data overrun 38741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 CRC 1=OK, 0=error 38751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 RAB 1=frame aborted 38761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 38771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((status & 0xf0) != 0xA0) { 38781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(status & BIT7) || (status & BIT4)) 38791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxabort++; 38801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (status & BIT6) 38811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxover++; 38821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (!(status & BIT5)) { 38831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxcrc++; 38841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type & HDLC_CRC_RETURN_EX) 38850fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return_frame = true; 38861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize = 0; 3888af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 38891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 3890198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa info->netdev->stats.rx_errors++; 3891198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa info->netdev->stats.rx_frame_errors++; 38921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 38941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 38950fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return_frame = true; 38961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_frame) 38981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize = buf->count; 38991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 39011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_get_frame(%s) status=%04X size=%d\n", 39021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name,status,framesize); 3903d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 39041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_DATA) 3905d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik trace_block(info, buf->data, framesize, 0); 3906d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 39071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (framesize) { 39081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->params.crc_type & HDLC_CRC_RETURN_EX && 39091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize+1 > info->max_frame_size) || 39101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize > info->max_frame_size) 39111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxlong++; 39121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 39131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & BIT5) 39141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxok++; 39151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type & HDLC_CRC_RETURN_EX) { 39171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *(buf->data + framesize) = status & BIT5 ? RX_OK:RX_CRC_ERROR; 39181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++framesize; 39191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3921af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 39221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 39231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_rx(info, buf->data, framesize); 39241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 39251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 39261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ldisc_receive_buf(tty, buf->data, info->flag_buf, framesize); 39271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 39311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->status = buf->count = 0; 39321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_frame_count--; 39331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_get++; 39341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_get >= info->rx_buf_count) 39351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_get = 0; 39361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 39371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39380fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 39391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 39401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39410fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool register_test(MGSLPC_INFO *info) 39421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3943d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik static unsigned char patterns[] = 39441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x00, 0xff, 0xaa, 0x55, 0x69, 0x96, 0x0f }; 3945fe971071a89c5c5184fc9f3482c7a8e997cf0520Tobias Klauser static unsigned int count = ARRAY_SIZE(patterns); 39461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int i; 39470fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool rc = true; 39481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 39491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 39511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 39521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < count; i++) { 39541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, XAD1, patterns[i]); 39551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, XAD2, patterns[(i + 1) % count]); 3956fe971071a89c5c5184fc9f3482c7a8e997cf0520Tobias Klauser if ((read_reg(info, XAD1) != patterns[i]) || 39571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (read_reg(info, XAD2) != patterns[(i + 1) % count])) { 39580fab6de09c71a976e5d765e1ff548b14be385153Joe Perches rc = false; 39591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 39601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 39641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 39651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 39661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39670fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool irq_test(MGSLPC_INFO *info) 39681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 39691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long end_time; 39701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 39711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 39731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 39741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39750fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->testing_irq = true; 39761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_mode(info); 39771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39780fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->irq_occurred = false; 39791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* init hdlc mode */ 39811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, IRQ_TIMER); 39831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + TIMR, 0); /* 512 cycles */ 39841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_START_TIMER); 39851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 39871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds end_time=100; 39891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(end_time-- && !info->irq_occurred) { 39901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(10); 39911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3992d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 39930fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->testing_irq = false; 39941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 39961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 39971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 3998d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 39990fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return info->irq_occurred; 40001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 40011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4002cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic int adapter_test(MGSLPC_INFO *info) 40031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 40041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!register_test(info)) { 40051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->init_error = DiagStatus_AddressFailure; 40061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):Register test failure for device %s Addr=%04X\n", 40071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name, (unsigned short)(info->io_base) ); 40081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 40091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 40101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!irq_test(info)) { 40121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->init_error = DiagStatus_IrqFailure; 40131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):Interrupt test failure for device %s IRQ=%d\n", 40141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name, (unsigned short)(info->irq_level) ); 40151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 40161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 40171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 40191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):device %s passed diagnostics\n", 40201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 40211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 40221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 40231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4024cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit) 40251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 40261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 40271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int linecount; 40281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (xmit) 40291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s tx data:\n",info->device_name); 40301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 40311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s rx data:\n",info->device_name); 4032d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 40331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(count) { 40341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count > 16) 40351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds linecount = 16; 40361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 40371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds linecount = count; 4038d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 40391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0;i<linecount;i++) 40401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%02X ",(unsigned char)data[i]); 40411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(;i<17;i++) 40421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" "); 40431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0;i<linecount;i++) { 40441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (data[i]>=040 && data[i]<=0176) 40451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%c",data[i]); 40461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 40471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("."); 40481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 40491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 4050d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 40511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data += linecount; 40521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= linecount; 40531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 40541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 40551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* HDLC frame time out 40571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * update stats and do tx completion processing 40581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4059cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void tx_timeout(unsigned long context) 40601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 40611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO*)context; 40621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 4063d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 40641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( debug_level >= DEBUG_LEVEL_INFO ) 40651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):tx_timeout(%s)\n", 40661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 40671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(info->tx_active && 40681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.mode == MGSL_MODE_HDLC) { 40691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txtimeout++; 40701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 40711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 40720fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 40731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 40741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 4076d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 4077af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 40781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 40791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_tx_done(info); 40801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 40811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 40821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bh_transmit(info); 40831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 40841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4085af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 40861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 40881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) 40891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * set encoding and frame check sequence (FCS) options 40901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 40911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 40921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * encoding serial encoding setting 40931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * parity FCS setting 40941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 40951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 40961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 40971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_attach(struct net_device *dev, unsigned short encoding, 40981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short parity) 40991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 41001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 41011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char new_encoding; 41021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short new_crctype; 41031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return error if TTY interface open */ 41051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->count) 41061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 41071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (encoding) 41091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 41101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break; 41111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break; 41121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break; 41131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break; 41141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break; 41151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: return -EINVAL; 41161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 41171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (parity) 41191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 41201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break; 41211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break; 41221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break; 41231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: return -EINVAL; 41241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 41251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.encoding = new_encoding; 412753b3531bbbf70ac7551b32d1acc229d94de52658Alexey Dobriyan info->params.crc_type = new_crctype; 41281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if network interface up, reprogram hardware */ 41301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 41311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_program_hw(info); 41321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 41341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 41351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 41371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by generic HDLC layer to send frame 41381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * skb socket buffer containing HDLC frame 41401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 41411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 41431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 41441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev) 41451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 41461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 41471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 41481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 41501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "%s:hdlc_xmit(%s)\n",__FILE__,dev->name); 41511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* stop sending until this frame completes */ 41531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_stop_queue(dev); 41541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy data to device buffers */ 4156d626f62b11e00c16e81e4308ab93d3f13551812aArnaldo Carvalho de Melo skb_copy_from_linear_data(skb, info->tx_buf, skb->len); 41571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_get = 0; 41581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_put = info->tx_count = skb->len; 41591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* update network statistics */ 4161198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_packets++; 4162198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_bytes += skb->len; 41631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* done with socket buffer, so free it */ 41651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_kfree_skb(skb); 41661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save start time for transmit timeout detection */ 41681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->trans_start = jiffies; 41691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* start hardware transmitter if necessary */ 41711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 41721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 41731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_start(info); 41741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 41751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 41771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 41781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 41801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer when interface enabled 41811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * claim resources and initialize hardware 41821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 41841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 41861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 41871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_open(struct net_device *dev) 41881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 41891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 41901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 41911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 41921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 41941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s:hdlcdev_open(%s)\n",__FILE__,dev->name); 41951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* generic HDLC layer open processing */ 41971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = hdlc_open(dev))) 41981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 41991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* arbitrate between network and tty opens */ 42011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 42021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->count != 0 || info->netcount != 0) { 42031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); 42041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 42051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 42061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 42071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netcount=1; 42081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 42091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* claim resources and init adapter */ 42111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = startup(info)) != 0) { 42121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 42131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netcount=0; 42141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 42151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 42161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 42171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* assert DTR and RTS, apply hardware settings */ 42191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; 42201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_program_hw(info); 42211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* enable network layer transmit */ 42231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->trans_start = jiffies; 42241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_start_queue(dev); 42251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* inform generic HDLC layer of current DCD status */ 42271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock, flags); 42281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 42291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock, flags); 4230fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa if (info->serial_signals & SerialSignal_DCD) 4231fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_on(dev); 4232fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa else 4233fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_off(dev); 42341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 42351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 42361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 42381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer when interface is disabled 42391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * shutdown hardware and release resources 42401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 42421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 42441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 42451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_close(struct net_device *dev) 42461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 42471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 42481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 42491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 42511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s:hdlcdev_close(%s)\n",__FILE__,dev->name); 42521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_stop_queue(dev); 42541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* shutdown adapter and release resources */ 42561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds shutdown(info); 42571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_close(dev); 42591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 42611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netcount=0; 42621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 42631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 42651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 42661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 42681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer to process IOCTL call to network device 42691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 42711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ifr pointer to network interface request structure 42721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * cmd IOCTL command code 42731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 42751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 42761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 42771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 42781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const size_t size = sizeof(sync_serial_settings); 42791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sync_serial_settings new_line; 42801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; 42811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 42821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int flags; 42831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 42851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); 42861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return error if TTY interface open */ 42881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->count) 42891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 42901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cmd != SIOCWANDEV) 42921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return hdlc_ioctl(dev, ifr, cmd); 42931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(ifr->ifr_settings.type) { 42951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case IF_GET_IFACE: /* return current sync_serial_settings */ 42961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; 42981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ifr->ifr_settings.size < size) { 42991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ifr->ifr_settings.size = size; /* data size wanted */ 43001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOBUFS; 43011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 43021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | 43041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | 43051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | 43061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); 43071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (flags){ 43091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; 43101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; 43111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break; 43121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break; 43131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: new_line.clock_type = CLOCK_DEFAULT; 43141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 43151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_line.clock_rate = info->params.clock_speed; 43171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_line.loopback = info->params.loopback ? 1:0; 43181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_to_user(line, &new_line, size)) 43201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 43211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 43221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */ 43241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!capable(CAP_NET_ADMIN)) 43261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EPERM; 43271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(&new_line, line, size)) 43281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 43291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (new_line.clock_type) 43311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 43321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break; 43331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break; 43341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break; 43351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break; 43361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_DEFAULT: flags = info->params.flags & 43371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | 43381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | 43391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | 43401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break; 43411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: return -EINVAL; 43421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 43431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_line.loopback != 0 && new_line.loopback != 1) 43451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 43461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | 43481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | 43491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | 43501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); 43511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.flags |= flags; 43521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.loopback = new_line.loopback; 43541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG)) 43561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.clock_speed = new_line.clock_rate; 43571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 43581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.clock_speed = 0; 43591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if network interface up, reprogram hardware */ 43611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 43621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_program_hw(info); 43631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 43641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 43661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return hdlc_ioctl(dev, ifr, cmd); 43671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 43681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 43691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 43711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer when transmit timeout is detected 43721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 43731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 43741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 43751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_tx_timeout(struct net_device *dev) 43761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 43771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 43781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 43791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 43811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("hdlcdev_tx_timeout(%s)\n",dev->name); 43821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4383198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_errors++; 4384198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_aborted_errors++; 43851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 43871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 43881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 43891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_wake_queue(dev); 43911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 43921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 43941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when transmit completes 43951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reenable network layer transmit if stopped 43961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 43971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 43981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 43991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_tx_done(MGSLPC_INFO *info) 44001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 44011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (netif_queue_stopped(info->netdev)) 44021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_wake_queue(info->netdev); 44031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 44041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 44061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when frame received 44071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * pass frame to network layer 44081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 44091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 44101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * buf pointer to buffer contianing frame data 44111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * size count of data bytes in buf 44121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 44131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size) 44141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 44151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sk_buff *skb = dev_alloc_skb(size); 44161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *dev = info->netdev; 44171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 44191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("hdlcdev_rx(%s)\n",dev->name); 44201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (skb == NULL) { 44221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", dev->name); 4423198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.rx_dropped++; 44241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 44251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 44261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4427198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa memcpy(skb_put(skb, size), buf, size); 44281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4429198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa skb->protocol = hdlc_type_trans(skb, dev); 44301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4431198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.rx_packets++; 4432198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.rx_bytes += size; 44331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_rx(skb); 44351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4436198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->last_rx = jiffies; 44371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 44381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 44401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when adding device instance 44411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * do generic HDLC initialization 44421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 44431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 44441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 44451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 44461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 44471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_init(MGSLPC_INFO *info) 44481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 44491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 44501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *dev; 44511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_device *hdlc; 44521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate and initialize network and HDLC layer objects */ 44541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(dev = alloc_hdlcdev(info))) { 44561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "%s:hdlc device allocation failure\n",__FILE__); 44571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 44581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 44591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* for network layer reporting purposes only */ 44611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->base_addr = info->io_base; 44621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->irq = info->irq_level; 44631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* network layer callbacks and settings */ 44651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->do_ioctl = hdlcdev_ioctl; 44661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->open = hdlcdev_open; 44671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->stop = hdlcdev_close; 44681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->tx_timeout = hdlcdev_tx_timeout; 44691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->watchdog_timeo = 10*HZ; 44701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->tx_queue_len = 50; 44711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* generic HDLC layer callbacks and settings */ 44731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc = dev_to_hdlc(dev); 44741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc->attach = hdlcdev_attach; 44751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc->xmit = hdlcdev_xmit; 44761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* register objects with HDLC layer */ 44781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = register_hdlc_device(dev))) { 44791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); 44801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_netdev(dev); 44811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 44821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 44831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netdev = dev; 44851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 44861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 44871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 44881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 44891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when removing device instance 44901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * do generic HDLC cleanup 44911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 44921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 44931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 44941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_exit(MGSLPC_INFO *info) 44951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 44961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unregister_hdlc_device(info->netdev); 44971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_netdev(info->netdev); 44981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netdev = NULL; 44991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 45001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 45011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_HDLC */ 45021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4503