synclink_cs.c revision eeb4613436f0f19a38f667ea3078821040559c68
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 { 141eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_port port; 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *if_ptr; /* General purpose pointer (used by SPPP) */ 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int magic; 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int line; 145d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount icount; 147d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int timeout; 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int x_char; /* xon/xoff character */ 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char read_status_mask; 151d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik unsigned char ignore_status_mask; 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *tx_buf; 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tx_put; 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tx_get; 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tx_count; 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* circular list of fixed length rx buffers */ 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *rx_buf; /* memory allocated for all rx buffers */ 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_buf_total_size; /* size of memory allocated for rx buffers */ 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_put; /* index of next empty rx buffer */ 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_get; /* index of next full rx buffer */ 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_buf_size; /* size in bytes of single rx buffer */ 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_buf_count; /* total number of rx buffers */ 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_frame_count; /* number of full rx buffers */ 167d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t status_event_wait_q; 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t event_wait_q; 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timer_list tx_timer; /* HDLC transmit timeout timer */ 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct _mgslpc_info *next_device; /* device list link */ 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short imra_value; 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short imrb_value; 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char pim_value; 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct work_struct task; /* task structure for scheduling bh */ 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 max_frame_size; 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 pending_bh; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1840fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool bh_running; 1850fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool bh_requested; 186d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dcd_chkcount; /* check counts to prevent */ 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cts_chkcount; /* too many IRQs if a signal */ 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dsr_chkcount; /* is floating */ 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ri_chkcount; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1920fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool rx_enabled; 1930fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool rx_overflow; 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1950fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool tx_enabled; 1960fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool tx_active; 1970fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool tx_aborting; 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 idle_mode; 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int if_mode; /* serial interface selection (RS-232, v.35 etc) */ 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char device_name[25]; /* device instance name */ 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int io_base; /* base I/O address of adapter */ 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int irq_level; 206d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSL_PARAMS params; /* communications parameters */ 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char serial_signals; /* current serial signal states */ 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2110fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool irq_occurred; /* for diagnostics use */ 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char testing_irq; 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int init_error; /* startup error (DIAGS) */ 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char flag_buf[MAX_ASYNC_BUFFER_SIZE]; 2160fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool drop_rts_on_tx_done; 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct _input_signal_events input_signal_events; 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* PCMCIA support */ 221fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski struct pcmcia_device *p_dev; 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_node_t node; 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int stop; 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SPPP/Cisco HDLC device parts */ 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int netcount; 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t netlock; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 229af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *netdev; 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} MGSLPC_INFO; 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MGSLPC_MAGIC 0x5402 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The size of the serial xmit buffer is 1 page, or 4096 bytes 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXBUFSIZE 4096 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 242d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CHA 0x00 /* channel A offset */ 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CHB 0x40 /* channel B offset */ 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME: PPC has PVR defined in asm/reg.h. For now we just undef it. 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef PVR 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RXFIFO 0 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXFIFO 0 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STAR 0x20 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMDR 0x20 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RSTA 0x21 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PRE 0x21 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MODE 0x22 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TIMR 0x23 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XAD1 0x24 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XAD2 0x25 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAH1 0x26 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAH2 0x27 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DAFO 0x27 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAL1 0x28 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RFC 0x28 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RHCR 0x29 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAL2 0x29 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RBCL 0x2a 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XBCL 0x2a 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RBCH 0x2b 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XBCH 0x2b 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR0 0x2c 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR1 0x2d 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR2 0x2e 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR3 0x2f 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VSTR 0x34 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BGR 0x34 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RLCR 0x35 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AML 0x36 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AMH 0x37 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GIS 0x38 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IVA 0x38 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IPC 0x39 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ISR 0x3a 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IMR 0x3a 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR 0x3c 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PIS 0x3d 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PIM 0x3d 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PCR 0x3e 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR4 0x3f 291d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// IMR/ISR 293d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_BREAK_ON BIT15 // rx break detected 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_DATAOVERRUN BIT14 // receive data overflow 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_ALLSENT BIT13 // all sent 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_UNDERRUN BIT12 // transmit data underrun 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_TIMER BIT11 // timer interrupt 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_CTS BIT10 // CTS status change 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_TXREPEAT BIT9 // tx message repeat 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_TXFIFO BIT8 // transmit pool ready 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_RXEOM BIT7 // receive message end 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_EXITHUNT BIT6 // receive frame start 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_RXTIME BIT6 // rx char timeout 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_DCD BIT2 // carrier detect status change 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_OVERRUN BIT1 // receive frame overflow 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_RXFIFO BIT0 // receive pool full 308d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// STAR 310d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XFW BIT6 // transmit FIFO write enable 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CEC BIT2 // command executing 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CTS BIT1 // CTS state 314d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_DTR BIT0 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_DSR BIT1 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_RI BIT2 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_AUTOCTS BIT3 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_RS232 0x20 /* 0010b */ 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_V35 0xe0 /* 1110b */ 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_RS422 0x40 /* 0100b */ 322d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 323d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik/* Register access functions */ 324d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define write_reg(info, reg, val) outb((val),(info)->io_base + (reg)) 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define read_reg(info, reg) inb((info)->io_base + (reg)) 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 328d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik#define read_reg16(info, reg) inw((info)->io_base + (reg)) 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define write_reg16(info, reg, val) outw((val), (info)->io_base + (reg)) 330d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define set_reg_bits(info, reg, mask) \ 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (reg), \ 333d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik (unsigned char) (read_reg(info, (reg)) | (mask))) 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define clear_reg_bits(info, reg, mask) \ 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (reg), \ 336d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik (unsigned char) (read_reg(info, (reg)) & ~(mask))) 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interrupt enable/disable routines 339d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 340d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (channel == CHA) { 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imra_value |= mask; 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHA + IMR, info->imra_value); 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imrb_value |= mask; 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHB + IMR, info->imrb_value); 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 350d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (channel == CHA) { 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imra_value &= ~mask; 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHA + IMR, info->imra_value); 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imrb_value &= ~mask; 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHB + IMR, info->imrb_value); 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define port_irq_disable(info, mask) \ 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { info->pim_value |= (mask); write_reg(info, PIM, info->pim_value); } 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define port_irq_enable(info, mask) \ 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { info->pim_value &= ~(mask); write_reg(info, PIM, info->pim_value); } 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_start(MGSLPC_INFO *info); 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_stop(MGSLPC_INFO *info); 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 370eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void tx_start(MGSLPC_INFO *info, struct tty_struct *tty); 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_stop(MGSLPC_INFO *info); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_set_idle(MGSLPC_INFO *info); 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void get_signals(MGSLPC_INFO *info); 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void set_signals(MGSLPC_INFO *info); 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void reset_device(MGSLPC_INFO *info); 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlc_mode(MGSLPC_INFO *info); 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void async_mode(MGSLPC_INFO *info); 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_timeout(unsigned long context); 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 384eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int carrier_raised(struct tty_port *port); 385eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void raise_dtr_rts(struct tty_port *port); 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 387af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dev_to_port(D) (dev_to_hdlc(D)->priv) 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_tx_done(MGSLPC_INFO *info); 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size); 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_init(MGSLPC_INFO *info); 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_exit(MGSLPC_INFO *info); 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit); 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3970fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool register_test(MGSLPC_INFO *info); 3980fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool irq_test(MGSLPC_INFO *info); 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int adapter_test(MGSLPC_INFO *info); 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int claim_resources(MGSLPC_INFO *info); 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void release_resources(MGSLPC_INFO *info); 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_add_device(MGSLPC_INFO *info); 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_remove_device(MGSLPC_INFO *info); 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 406eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty); 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_reset_buffers(MGSLPC_INFO *info); 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int rx_alloc_buffers(MGSLPC_INFO *info); 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_free_buffers(MGSLPC_INFO *info); 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4117d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t mgslpc_isr(int irq, void *dev_id); 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bottom half interrupt handlers 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 416c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void bh_handler(struct work_struct *work); 417eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty); 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void bh_status(MGSLPC_INFO *info); 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ioctl handlers 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tiocmget(struct tty_struct *tty, struct file *file); 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tiocmset(struct tty_struct *tty, struct file *file, 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear); 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_stats(MGSLPC_INFO *info, struct mgsl_icount __user *user_icount); 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_params(MGSLPC_INFO *info, MGSL_PARAMS __user *user_params); 428eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params, struct tty_struct *tty); 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_txidle(MGSLPC_INFO *info, int __user *idle_mode); 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_txidle(MGSLPC_INFO *info, int idle_mode); 431eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int set_txenable(MGSLPC_INFO *info, int enable, struct tty_struct *tty); 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tx_abort(MGSLPC_INFO *info); 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_rxenable(MGSLPC_INFO *info, int enable); 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int wait_events(MGSLPC_INFO *info, int __user *mask); 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic MGSLPC_INFO *mgslpc_device_list = NULL; 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_device_count = 0; 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Set this param to non-zero to load eax with the 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * .text section address and breakpoint on module load. 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is useful for use with gdb and add-symbol-file command. 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int break_on_load=0; 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver major number, defaults to zero to get auto 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * assigned major number. May be forced as module parameter. 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ttymajor=0; 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_level = 0; 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int maxframe[MAX_DEVICE_COUNT] = {0,}; 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(break_on_load, bool, 0); 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(ttymajor, int, 0); 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(debug_level, int, 0); 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param_array(maxframe, int, NULL, 0); 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *driver_name = "SyncLink PC Card driver"; 463a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghumstatic char *driver_version = "$Revision: 4.34 $"; 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct tty_driver *serial_driver; 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* number of characters left in xmit buffer before we ask for more */ 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WAKEUP_CHARS 256 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 470eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty); 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout); 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* PCMCIA prototypes */ 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 47515b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowskistatic int mgslpc_config(struct pcmcia_device *link); 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_release(u_long arg); 477cc3b4866bee996c922e875b8c8efe9f0d8803aaeDominik Brodowskistatic void mgslpc_detach(struct pcmcia_device *p_dev); 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1st function defined in .text section. Calling this function in 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * init_module() followed by a breakpoint allows a remote debugger 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (gdb) to get the .text address for the add-symbol-file command. 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This allows remote debugging of dynamically loadable modules. 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void* mgslpc_get_text_ptr(void) 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return mgslpc_get_text_ptr; 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * line discipline callback wrappers 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The wrappers maintain line discipline references 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * while calling into the line discipline. 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ldisc_receive_buf - pass receive data to line discipline 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ldisc_receive_buf(struct tty_struct *tty, 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const __u8 *data, char *flags, int count) 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_ldisc *ld; 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tty) 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ld = tty_ldisc_ref(tty); 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ld) { 507a352def21a642133758b868c71bee12ab34ad5c5Alan Cox if (ld->ops->receive_buf) 508a352def21a642133758b868c71bee12ab34ad5c5Alan Cox ld->ops->receive_buf(tty, data, flags, count); 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_ldisc_deref(ld); 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 513eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic const struct tty_port_operations mgslpc_port_ops = { 514eeb4613436f0f19a38f667ea3078821040559c68Alan Cox .carrier_raised = carrier_raised, 515eeb4613436f0f19a38f667ea3078821040559c68Alan Cox .raise_dtr_rts = raise_dtr_rts 516eeb4613436f0f19a38f667ea3078821040559c68Alan Cox}; 517eeb4613436f0f19a38f667ea3078821040559c68Alan Cox 51815b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowskistatic int mgslpc_probe(struct pcmcia_device *link) 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info; 52115b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski int ret; 522fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("mgslpc_attach\n"); 525fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 526dd00cc486ab1c17049a535413d1751ef3482141cYoann Padioleau info = kzalloc(sizeof(MGSLPC_INFO), GFP_KERNEL); 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) { 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Error can't allocate device instance data\n"); 529f8cfa618dccbdc6dab5297f75779566a388a98fdDominik Brodowski return -ENOMEM; 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->magic = MGSLPC_MAGIC; 533eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_port_init(&info->port); 534eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.ops = &mgslpc_port_ops; 535c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells INIT_WORK(&info->task, bh_handler); 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = 4096; 537eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.close_delay = 5*HZ/10; 538eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.closing_wait = 30*HZ; 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&info->status_event_wait_q); 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&info->event_wait_q); 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&info->lock); 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&info->netlock); 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); 544d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik info->idle_mode = HDLC_TXIDLE_FLAGS; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imra_value = 0xffff; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imrb_value = 0xffff; 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pim_value = 0xff; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 549fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski info->p_dev = link; 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->priv = info; 551fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 552fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski /* Initialize the struct pcmcia_device structure */ 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Interrupt setup */ 555aafcf998c333a2a29e12093437eef32a60a8018dAlan Cox link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; 5560c7ab67602e65b3ba7aaa81f023b034cd7458ec6Dominik Brodowski link->irq.IRQInfo1 = IRQ_LEVEL_ID; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->irq.Handler = NULL; 558fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.Attributes = 0; 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.IntType = INT_MEMORY_AND_IO; 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 56215b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski ret = mgslpc_config(link); 56315b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski if (ret) 56415b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski return ret; 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_add_device(info); 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 568f8cfa618dccbdc6dab5297f75779566a388a98fdDominik Brodowski return 0; 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Card has been inserted. 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CS_CHECK(fn, ret) \ 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdo { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 57715b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowskistatic int mgslpc_config(struct pcmcia_device *link) 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = link->priv; 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple_t tuple; 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cisparse_t parse; 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int last_fn, last_ret; 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u_char buf[64]; 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cistpl_cftable_entry_t dflt = { 0 }; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cistpl_cftable_entry_t *cfg; 586d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("mgslpc_config(0x%p)\n", link); 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple.Attributes = 0; 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple.TupleData = buf; 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple.TupleDataMax = sizeof(buf); 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple.TupleOffset = 0; 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get CIS configuration entry */ 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 598fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfg = &(parse.cftable_entry); 601fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple)); 6022f3061eb1086f98990d6495b8c63a1b83f2f59aaDominik Brodowski CS_CHECK(ParseTuple, pcmcia_parse_tuple(&tuple, &parse)); 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg; 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cfg->index == 0) 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cs_failed; 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.ConfigIndex = cfg->index; 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.Attributes |= CONF_ENABLE_IRQ; 610d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* IO window settings */ 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.NumPorts1 = 0; 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(io->flags & CISTPL_IO_8BIT)) 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(io->flags & CISTPL_IO_16BIT)) 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.BasePort1 = io->win[0].base; 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.NumPorts1 = io->win[0].len; 623fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io)); 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.Attributes = CONF_ENABLE_IRQ; 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.IntType = INT_MEMORY_AND_IO; 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.ConfigIndex = 8; 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->conf.Present = PRESENT_OPTION; 630d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->irq.Attributes |= IRQ_HANDLE_PRESENT; 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->irq.Handler = mgslpc_isr; 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->irq.Instance = info; 634fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 636fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->io_base = link->io.BasePort1; 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->irq_level = link->irq.AssignedIRQ; 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* add to linked list of devices */ 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sprintf(info->node.dev_name, "mgslpc0"); 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->node.major = info->node.minor = 0; 644fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski link->dev_node = &info->node; 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "%s: index 0x%02x:", 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->node.dev_name, link->conf.ConfigIndex); 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (link->conf.Attributes & CONF_ENABLE_IRQ) 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(", irq %d", link->irq.AssignedIRQ); 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (link->io.NumPorts1) 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(", io 0x%04x-0x%04x", link->io.BasePort1, 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->io.BasePort1+link->io.NumPorts1-1); 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 65415b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski return 0; 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldscs_failed: 657fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski cs_error(link, last_fn, last_ret); 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_release((u_long)link); 65915b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski return -ENODEV; 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Card has been removed. 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Unregister device and release PCMCIA configuration. 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If device is open, postpone until it is closed. 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_release(u_long arg) 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 668e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski struct pcmcia_device *link = (struct pcmcia_device *)arg; 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 670e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski if (debug_level >= DEBUG_LEVEL_INFO) 671e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski printk("mgslpc_release(0x%p)\n", link); 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 673e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski pcmcia_disable_device(link); 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 676fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowskistatic void mgslpc_detach(struct pcmcia_device *link) 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 678e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski if (debug_level >= DEBUG_LEVEL_INFO) 679e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski printk("mgslpc_detach(0x%p)\n", link); 680cc3b4866bee996c922e875b8c8efe9f0d8803aaeDominik Brodowski 681e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski ((MGSLPC_INFO *)link->priv)->stop = 1; 682e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski mgslpc_release((u_long)link); 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 684e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski mgslpc_remove_device((MGSLPC_INFO *)link->priv); 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 687fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowskistatic int mgslpc_suspend(struct pcmcia_device *link) 68898e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski{ 68998e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski MGSLPC_INFO *info = link->priv; 69098e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 69198e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski info->stop = 1; 69298e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 69398e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski return 0; 69498e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski} 69598e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 696fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowskistatic int mgslpc_resume(struct pcmcia_device *link) 69798e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski{ 69898e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski MGSLPC_INFO *info = link->priv; 69998e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 70098e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski info->stop = 0; 70198e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 70298e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski return 0; 70398e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski} 70498e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 70598e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 7060fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic inline bool mgslpc_paranoia_check(MGSLPC_INFO *info, 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *name, const char *routine) 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MGSLPC_PARANOIA_CHECK 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static const char *badmagic = 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Warning: bad magic number for mgsl struct (%s) in %s\n"; 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static const char *badinfo = 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Warning: null mgslpc_info for (%s) in %s\n"; 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) { 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(badinfo, name, routine); 7170fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->magic != MGSLPC_MAGIC) { 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(badmagic, name, routine); 7210fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 7250fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 7270fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return false; 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_RXFIFO BIT7 // release current rx FIFO 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_RXRESET BIT6 // receiver reset 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_RXFIFO_READ BIT5 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_START_TIMER BIT4 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_TXFIFO BIT3 // release current tx FIFO 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_TXEOM BIT1 // transmit end message 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_TXRESET BIT0 // transmit reset 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7390fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool wait_command_complete(MGSLPC_INFO *info, unsigned char channel) 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i = 0; 742d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* wait for command completion */ 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (read_reg(info, (unsigned char)(channel+STAR)) & BIT2) { 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(1); 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (i++ == 1000) 7460fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return false; 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7480fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 751d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void issue_command(MGSLPC_INFO *info, unsigned char channel, unsigned char cmd) 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_command_complete(info, channel); 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (unsigned char) (channel + CMDR), cmd); 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_pause(struct tty_struct *tty) 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 761d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "tx_pause")) 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 765d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik printk("tx_pause(%s)\n",info->device_name); 766d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_enabled) 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_release(struct tty_struct *tty) 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 777d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "tx_release")) 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 781d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik printk("tx_release(%s)\n",info->device_name); 782d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_enabled) 785eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Return next bottom half action to perform. 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * or 0 if nothing to do. 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int bh_action(MGSLPC_INFO *info) 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc = 0; 796d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->pending_bh & BH_RECEIVE) { 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh &= ~BH_RECEIVE; 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = BH_RECEIVE; 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->pending_bh & BH_TRANSMIT) { 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh &= ~BH_TRANSMIT; 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = BH_TRANSMIT; 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->pending_bh & BH_STATUS) { 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh &= ~BH_STATUS; 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = BH_STATUS; 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!rc) { 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Mark BH routine as complete */ 8120fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_running = false; 8130fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_requested = false; 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 815d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 817d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 821c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void bh_handler(struct work_struct *work) 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 823c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells MGSLPC_INFO *info = container_of(work, MGSLPC_INFO, task); 824eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty; 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int action; 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 829d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):bh_handler(%s) entry\n", 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 833d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8340fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_running = true; 835eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty = tty_port_tty_get(&info->port); 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while((action = bh_action(info)) != 0) { 838d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Process work item */ 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( debug_level >= DEBUG_LEVEL_BH ) 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):bh_handler() work item action=%d\n", 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,action); 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (action) { 845d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case BH_RECEIVE: 847eeb4613436f0f19a38f667ea3078821040559c68Alan Cox while(rx_get_frame(info, tty)); 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case BH_TRANSMIT: 850eeb4613436f0f19a38f667ea3078821040559c68Alan Cox bh_transmit(info, tty); 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case BH_STATUS: 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bh_status(info); 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* unknown work item ID */ 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Unknown work item ID=%08X!\n", action); 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 862eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):bh_handler(%s) exit\n", 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 868eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty) 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("bh_transmit() entry on %s\n", info->device_name); 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 873b963a8441cb95999c97bea379607071a869c65f0Jiri Slaby if (tty) 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 877cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void bh_status(MGSLPC_INFO *info) 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->ri_chkcount = 0; 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dsr_chkcount = 0; 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dcd_chkcount = 0; 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->cts_chkcount = 0; 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 885d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik/* eom: non-zero = end of frame */ 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_ready_hdlc(MGSLPC_INFO *info, int eom) 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char data[2]; 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char fifo_count, read_count, i; 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds RXBUF *buf = (RXBUF*)(info->rx_buf + (info->rx_put * info->rx_buf_size)); 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_ready_hdlc(eom=%d)\n",__FILE__,__LINE__,eom); 894d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->rx_enabled) 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_frame_count >= info->rx_buf_count) { 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no more free buffers */ 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXRESET); 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_RECEIVE; 9020fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_overflow = true; 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.buf_overrun++; 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (eom) { 908d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* end of frame, get FIFO count from RBCL register */ 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f))) 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 913d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (fifo_count == 1) { 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_count = 1; 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[0] = read_reg(info, CHA + RXFIFO); 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_count = 2; 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *((unsigned short *) data) = read_reg16(info, CHA + RXFIFO); 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count -= read_count; 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!fifo_count && eom) 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->status = data[--read_count]; 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < read_count; i++) { 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (buf->count >= info->max_frame_size) { 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* frame too large, reset receiver and reset current buffer */ 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXRESET); 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->count = 0; 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *(buf->data + buf->count) = data[i]; 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->count++; 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (fifo_count); 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (eom) { 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_RECEIVE; 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_frame_count++; 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_put++; 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_put >= info->rx_buf_count) 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_put = 0; 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXFIFO); 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 948eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void rx_ready_async(MGSLPC_INFO *info, int tcd, struct tty_struct *tty) 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 95033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox unsigned char data, status, flag; 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int fifo_count; 95233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox int work = 0; 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount *icount = &info->icount; 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tcd) { 956d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* early termination, get FIFO count from RBCL register */ 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f); 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Zero fifo count could mean 0 or 32 bytes available. 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If BIT5 of STAR is set then at least 1 byte is available. 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!fifo_count && (read_reg(info,CHA+STAR) & BIT5)) 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 96633f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 96733f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox tty_buffer_request_room(tty, fifo_count); 968d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* Flush received async data to receive data buffer. */ 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (fifo_count) { 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data = read_reg(info, CHA + RXFIFO); 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = read_reg(info, CHA + RXFIFO); 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count -= 2; 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->rx++; 97533f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox flag = TTY_NORMAL; 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // if no frameing/crc error then save data 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // BIT7:parity error 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // BIT6:framing error 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & (BIT7 + BIT6)) { 982d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (status & BIT7) 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->parity++; 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->frame++; 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* discard char if tty control flags say so */ 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & info->ignore_status_mask) 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 990d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status &= info->read_status_mask; 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & BIT7) 99433f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox flag = TTY_PARITY; 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (status & BIT6) 99633f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox flag = TTY_FRAME; 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 99833f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox work += tty_insert_flip_char(tty, data, flag); 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXFIFO); 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) { 100333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox printk("%s(%d):rx_ready_async", 100433f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox __FILE__,__LINE__); 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx=%d brk=%d parity=%d frame=%d overrun=%d\n", 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,icount->rx,icount->brk, 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->parity,icount->frame,icount->overrun); 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1009d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 101033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox if (work) 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flip_buffer_push(tty); 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1015eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void tx_done(MGSLPC_INFO *info, struct tty_struct *tty) 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1019d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 10200fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 10210fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_aborting = false; 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 1027d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik del_timer(&info->tx_timer); 1028d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->drop_rts_on_tx_done) { 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) { 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~SerialSignal_RTS; 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10350fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->drop_rts_on_tx_done = false; 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1038af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_tx_done(info); 1041d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik else 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 1044eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty->stopped || tty->hw_stopped) { 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_TRANSMIT; 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1052eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void tx_ready(MGSLPC_INFO *info, struct tty_struct *tty) 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char fifo_count = 32; 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int c; 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):tx_ready(%s)\n", __FILE__,__LINE__,info->device_name); 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1064eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty->stopped || tty->hw_stopped) { 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_count) 10690fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_count) 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (info->tx_count && fifo_count) { 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = min(2, min_t(int, fifo_count, min(info->tx_count, TXBUFSIZE - info->tx_get))); 1077d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c == 1) { 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + TXFIFO, *(info->tx_buf + info->tx_get)); 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHA + TXFIFO, 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *((unsigned short*)(info->tx_buf + info->tx_get))); 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count -= c; 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_get = (info->tx_get + c) & (TXBUFSIZE - 1); 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count -= c; 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) { 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count < WAKEUP_CHARS) 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_TRANSMIT; 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXFIFO); 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count) 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXFIFO); 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXFIFO + CMD_TXEOM); 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1101eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void cts_change(MGSLPC_INFO *info, struct tty_struct *tty) 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, IRQ_CTS); 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.cts++; 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_CTS) 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.cts_up++; 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.cts_down++; 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1114eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.flags & ASYNC_CTS_FLOW) { 1115eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty->hw_stopped) { 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_CTS) { 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("CTS tx start..."); 1119eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty) 1120eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty->hw_stopped = 0; 1121eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_TRANSMIT; 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->serial_signals & SerialSignal_CTS)) { 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("CTS tx stop..."); 1129eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty) 1130eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty->hw_stopped = 1; 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1138eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void dcd_change(MGSLPC_INFO *info, struct tty_struct *tty) 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, IRQ_DCD); 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.dcd++; 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DCD) { 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dcd_up++; 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dcd_down++; 1149af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 1150fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa if (info->netcount) { 1151fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa if (info->serial_signals & SerialSignal_DCD) 1152fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_on(info->netdev); 1153fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa else 1154fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_off(info->netdev); 1155fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa } 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1160eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.flags & ASYNC_CHECK_CD) { 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s CD now %s...", info->device_name, 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (info->serial_signals & SerialSignal_DCD) ? "on" : "off"); 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DCD) 1165eeb4613436f0f19a38f667ea3078821040559c68Alan Cox wake_up_interruptible(&info->port.open_wait); 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("doing serial hangup..."); 1169eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty) 1170eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_hangup(tty); 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dsr_change(MGSLPC_INFO *info) 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->dsr_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, PVR_DSR); 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.dsr++; 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DSR) 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dsr_up++; 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dsr_down++; 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ri_change(MGSLPC_INFO *info) 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->ri_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, PVR_RI); 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rng++; 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RI) 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.ri_up++; 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.ri_down++; 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Interrupt service routine entry point. 1207d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 1209d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * irq interrupt number that caused interrupt 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev_id device ID supplied during interrupt registration 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1213a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzikstatic irqreturn_t mgslpc_isr(int dummy, void *dev_id) 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1215a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzik MGSLPC_INFO *info = dev_id; 1216eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty; 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short isr; 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char gis, pis; 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count=0; 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1221d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (debug_level >= DEBUG_LEVEL_ISR) 1222a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzik printk("mgslpc_isr(%d) entry.\n", info->irq_level); 1223d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1224e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski if (!(info->p_dev->_locked)) 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_HANDLED; 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1227eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty = tty_port_tty_get(&info->port); 1228eeb4613436f0f19a38f667ea3078821040559c68Alan Cox 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock(&info->lock); 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while ((gis = read_reg(info, CHA + GIS))) { 1232d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (debug_level >= DEBUG_LEVEL_ISR) 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("mgslpc_isr %s gis=%04X\n", info->device_name,gis); 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((gis & 0x70) || count > 1000) { 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("synclink_cs:hardware failed or ejected\n"); 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count++; 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gis & (BIT1 + BIT0)) { 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds isr = read_reg16(info, CHB + ISR); 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_DCD) 1244eeb4613436f0f19a38f667ea3078821040559c68Alan Cox dcd_change(info, tty); 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_CTS) 1246eeb4613436f0f19a38f667ea3078821040559c68Alan Cox cts_change(info, tty); 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gis & (BIT3 + BIT2)) 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds isr = read_reg16(info, CHA + ISR); 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_TIMER) { 12520fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->irq_occurred = true; 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, IRQ_TIMER); 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1256d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* receive IRQs */ 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_EXITHUNT) { 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.exithunt++; 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_BREAK_ON) { 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.brk++; 1263eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.flags & ASYNC_SAK) 1264eeb4613436f0f19a38f667ea3078821040559c68Alan Cox do_SAK(tty); 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_RXTIME) { 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXFIFO_READ); 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & (IRQ_RXEOM + IRQ_RXFIFO)) { 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) 1271d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik rx_ready_hdlc(info, isr & IRQ_RXEOM); 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 1273eeb4613436f0f19a38f667ea3078821040559c68Alan Cox rx_ready_async(info, isr & IRQ_RXEOM, tty); 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1276d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* transmit IRQs */ 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_UNDERRUN) { 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_aborting) 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txabort++; 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txunder++; 1282eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_done(info, tty); 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (isr & IRQ_ALLSENT) { 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txok++; 1286eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_done(info, tty); 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (isr & IRQ_TXFIFO) 1289eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_ready(info, tty); 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gis & BIT7) { 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pis = read_reg(info, CHA + PIS); 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (pis & BIT1) 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsr_change(info); 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (pis & BIT2) 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ri_change(info); 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1299d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1300d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* Request bottom half processing if there's something 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for it to do and the bh is not already running 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->pending_bh && !info->bh_running && !info->bh_requested) { 1305d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if ( debug_level >= DEBUG_LEVEL_ISR ) 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):%s queueing bh task.\n", 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule_work(&info->task); 13090fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_requested = true; 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock(&info->lock); 1313eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 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 */ 1324eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int startup(MGSLPC_INFO * info, struct tty_struct *tty) 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 1331eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.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 ) { 1358eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (capable(CAP_SYS_ADMIN) && tty) 1359eeb4613436f0f19a38f667ea3078821040559c68Alan Cox set_bit(TTY_IO_ERROR, &tty->flags); 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_resources(info); 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* program hardware for current parameters */ 1365eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_change_params(info, tty); 1366d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1367eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty) 1368eeb4613436f0f19a38f667ea3078821040559c68Alan Cox clear_bit(TTY_IO_ERROR, &tty->flags); 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1370eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.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 */ 1377eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void shutdown(MGSLPC_INFO * info, struct tty_struct *tty) 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1380d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1381eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (!(info->port.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 1408eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (!tty || 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 1417eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty) 1418eeb4613436f0f19a38f667ea3078821040559c68Alan Cox set_bit(TTY_IO_ERROR, &tty->flags); 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1420eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags &= ~ASYNC_INITIALIZED; 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1423eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void mgslpc_program_hw(MGSLPC_INFO *info, struct tty_struct *tty) 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 1449eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->netcount || (tty && (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 */ 1457eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty) 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned cflag; 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int bits_per_char; 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1462eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (!tty || !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 1469eeb4613436f0f19a38f667ea3078821040559c68Alan Cox cflag = 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) { 1516eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->params.data_rate = tty_get_baud_rate(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) 1526eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags |= ASYNC_CTS_FLOW; 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 1528eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags &= ~ASYNC_CTS_FLOW; 1529d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CLOCAL) 1531eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags &= ~ASYNC_CHECK_CD; 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 1533eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags |= ASYNC_CHECK_CD; 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* process tty input control flags */ 1536d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->read_status_mask = 0; 1538eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (I_INPCK(tty)) 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->read_status_mask |= BIT7 | BIT6; 1540eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (I_IGNPAR(tty)) 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->ignore_status_mask |= BIT7 | BIT6; 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1543eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_program_hw(info, tty); 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) 1603eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 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) 1665eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 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) 1770eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 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 */ 1868eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params, struct tty_struct *tty) 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 1889eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_change_params(info, tty); 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 1950eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int set_txenable(MGSLPC_INFO * info, int enable, struct tty_struct *tty) 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) 1960eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 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; 2269eeb4613436f0f19a38f667ea3078821040559c68Alan Cox int error; 2270eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct mgsl_icount cnow; /* kernel counter temps */ 2271eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct serial_icounter_struct __user *p_cuser; /* user space */ 2272eeb4613436f0f19a38f667ea3078821040559c68Alan Cox void __user *argp = (void __user *)arg; 2273eeb4613436f0f19a38f667ea3078821040559c68Alan Cox unsigned long flags; 2274d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 22761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_ioctl %s cmd=%08X\n", __FILE__,__LINE__, 22771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name, cmd ); 2278d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_ioctl")) 22801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 22811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && 22831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { 22841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->flags & (1 << TTY_IO_ERROR)) 22851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EIO; 22861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cmd) { 22891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGPARAMS: 22901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_params(info, argp); 22911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCSPARAMS: 2292eeb4613436f0f19a38f667ea3078821040559c68Alan Cox return set_params(info, argp, tty); 22931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGTXIDLE: 22941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_txidle(info, argp); 22951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCSTXIDLE: 22961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_txidle(info, (int)arg); 22971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGIF: 22981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_interface(info, argp); 22991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCSIF: 23001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_interface(info,(int)arg); 23011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCTXENABLE: 2302eeb4613436f0f19a38f667ea3078821040559c68Alan Cox return set_txenable(info,(int)arg, tty); 23031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCRXENABLE: 23041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_rxenable(info,(int)arg); 23051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCTXABORT: 23061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tx_abort(info); 23071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGSTATS: 23081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_stats(info, argp); 23091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCWAITEVENT: 23101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return wait_events(info, argp); 23111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCMIWAIT: 23121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return modem_input_wait(info,(int)arg); 23131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCGICOUNT: 23141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 23151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow = info->icount; 23161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 23171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_cuser = argp; 23181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.cts, &p_cuser->cts); 23191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.dsr, &p_cuser->dsr); 23211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.rng, &p_cuser->rng); 23231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.dcd, &p_cuser->dcd); 23251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.rx, &p_cuser->rx); 23271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.tx, &p_cuser->tx); 23291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.frame, &p_cuser->frame); 23311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.overrun, &p_cuser->overrun); 23331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.parity, &p_cuser->parity); 23351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.brk, &p_cuser->brk); 23371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(error,cnow.buf_overrun, &p_cuser->buf_overrun); 23391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (error) return error; 23401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 23411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 23421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOIOCTLCMD; 23431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 23451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set new termios settings 2348d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 23491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 2350d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 23511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty pointer to tty structure 23521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * termios pointer to buffer to hold returned old termios 23531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2354606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Coxstatic void mgslpc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) 23551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 23561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 23571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 2358d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 23601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_set_termios %s\n", __FILE__,__LINE__, 23611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver->name ); 2362d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just return if nothing has changed */ 23641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((tty->termios->c_cflag == old_termios->c_cflag) 2365d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik && (RELEVANT_IFLAG(tty->termios->c_iflag) 23661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == RELEVANT_IFLAG(old_termios->c_iflag))) 23671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 23681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2369eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_change_params(info, tty); 23701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Handle transition to B0 status */ 23721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (old_termios->c_cflag & CBAUD && 23731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !(tty->termios->c_cflag & CBAUD)) { 23741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); 23751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 23761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 23771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 23781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2379d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Handle transition away from B0 status */ 23811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(old_termios->c_cflag & CBAUD) && 23821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->termios->c_cflag & CBAUD) { 23831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DTR; 2384d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (!(tty->termios->c_cflag & CRTSCTS) || 23851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !test_bit(TTY_THROTTLED, &tty->flags)) { 23861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS; 23871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 23891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 23901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 23911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2392d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Handle turning off CRTSCTS */ 23941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (old_termios->c_cflag & CRTSCTS && 23951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !(tty->termios->c_cflag & CRTSCTS)) { 23961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->hw_stopped = 0; 23971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_release(tty); 23981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_close(struct tty_struct *tty, struct file * filp) 24021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 2404eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_port *port = &info->port; 24051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_close")) 24071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 2408d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 24101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_close(%s) entry, count=%d\n", 2411eeb4613436f0f19a38f667ea3078821040559c68Alan Cox __FILE__,__LINE__, info->device_name, port->count); 24121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2413eeb4613436f0f19a38f667ea3078821040559c68Alan Cox WARN_ON(!port->count); 2414d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2415eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty_port_close_start(port, tty, filp) == 0) 24161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 2417d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2418eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (port->flags & ASYNC_INITIALIZED) 24191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_wait_until_sent(tty, info->timeout); 24201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2421978e595f88a1fba5869aa42a4af4fba36f33ecacAlan Cox mgslpc_flush_buffer(tty); 24221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2423978e595f88a1fba5869aa42a4af4fba36f33ecacAlan Cox tty_ldisc_flush(tty); 2424eeb4613436f0f19a38f667ea3078821040559c68Alan Cox shutdown(info, tty); 2425eeb4613436f0f19a38f667ea3078821040559c68Alan Cox 2426eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_port_close_end(port, tty); 2427eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_port_tty_set(port, NULL); 2428d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikcleanup: 24291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 24301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__,__LINE__, 2431eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty->driver->name, port->count); 24321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Wait until the transmitter is empty. 24351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 24361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout) 24371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 24391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long orig_jiffies, char_time; 24401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info ) 24421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 24431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 24451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_wait_until_sent(%s) entry\n", 24461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 2447d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_wait_until_sent")) 24491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 24501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2451eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (!(info->port.flags & ASYNC_INITIALIZED)) 24521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 2453d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds orig_jiffies = jiffies; 2455d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Set check interval to 1/5 of estimated time to 24571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * send a character, and make it at least 1. The check 24581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interval should also be less than the timeout. 24591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: use tight timings here to satisfy the NIST-PCTS. 2460d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 2461d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( info->params.data_rate ) { 24631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time = info->timeout/(32 * 5); 24641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!char_time) 24651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time++; 24661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 24671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time = 1; 2468d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout) 24701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time = min_t(unsigned long, char_time, timeout); 2471d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 24731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (info->tx_active) { 24741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(jiffies_to_msecs(char_time)); 24751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) 24761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout && time_after(jiffies, orig_jiffies + timeout)) 24781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 24811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while ((info->tx_count || info->tx_active) && 24821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_enabled) { 24831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(jiffies_to_msecs(char_time)); 24841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) 24851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout && time_after(jiffies, orig_jiffies + timeout)) 24871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2490d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 24921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 24931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_wait_until_sent(%s) exit\n", 24941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 24951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Called by tty_hangup() when a hangup is signaled. 24981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the same as closing all open files for the port. 24991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 25001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_hangup(struct tty_struct *tty) 25011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 25021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 2503d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 25051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_hangup(%s)\n", 25061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 2507d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_hangup")) 25091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 25101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_flush_buffer(tty); 2512eeb4613436f0f19a38f667ea3078821040559c68Alan Cox shutdown(info, tty); 2513eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_port_hangup(&info->port); 25141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2516eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int carrier_raised(struct tty_port *port) 25171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2518eeb4613436f0f19a38f667ea3078821040559c68Alan Cox MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port); 2519eeb4613436f0f19a38f667ea3078821040559c68Alan Cox unsigned long flags; 2520d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2521eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_lock_irqsave(&info->lock,flags); 2522eeb4613436f0f19a38f667ea3078821040559c68Alan Cox get_signals(info); 2523eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_unlock_irqrestore(&info->lock,flags); 2524d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2525eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->serial_signals & SerialSignal_DCD) 2526eeb4613436f0f19a38f667ea3078821040559c68Alan Cox return 1; 2527eeb4613436f0f19a38f667ea3078821040559c68Alan Cox return 0; 2528eeb4613436f0f19a38f667ea3078821040559c68Alan Cox} 2529d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2530eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void raise_dtr_rts(struct tty_port *port) 2531eeb4613436f0f19a38f667ea3078821040559c68Alan Cox{ 2532eeb4613436f0f19a38f667ea3078821040559c68Alan Cox MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port); 2533eeb4613436f0f19a38f667ea3078821040559c68Alan Cox unsigned long flags; 2534d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2535eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_lock_irqsave(&info->lock,flags); 2536eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; 2537eeb4613436f0f19a38f667ea3078821040559c68Alan Cox set_signals(info); 2538eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_unlock_irqrestore(&info->lock,flags); 25391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2541eeb4613436f0f19a38f667ea3078821040559c68Alan Cox 25421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_open(struct tty_struct *tty, struct file * filp) 25431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 25441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info; 2545eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_port *port; 25461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval, line; 25471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 25481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2549d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* verify range of specified line number */ 25501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds line = tty->index; 25511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((line < 0) || (line >= mgslpc_device_count)) { 25521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_open with invalid line #%d.\n", 25531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,line); 25541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 25551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* find the info structure for the specified line */ 25581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = mgslpc_device_list; 25591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(info && info->line != line) 25601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = info->next_device; 25611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_open")) 25621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2563d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2564eeb4613436f0f19a38f667ea3078821040559c68Alan Cox port = &info->port; 25651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = info; 2566eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_port_tty_set(port, tty); 2567d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 25691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_open(%s), old ref count = %d\n", 2570eeb4613436f0f19a38f667ea3078821040559c68Alan Cox __FILE__,__LINE__,tty->driver->name, port->count); 25711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If port is closing, signal caller to try again */ 2573eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING){ 2574eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (port->flags & ASYNC_CLOSING) 2575eeb4613436f0f19a38f667ea3078821040559c68Alan Cox interruptible_sleep_on(&port->close_wait); 2576eeb4613436f0f19a38f667ea3078821040559c68Alan Cox retval = ((port->flags & ASYNC_HUP_NOTIFY) ? 25771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -EAGAIN : -ERESTARTSYS); 25781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 25791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2580d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2581eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0; 25821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 25841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) { 25851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EBUSY; 25861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 25871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 25881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2589eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_lock(&port->lock); 2590eeb4613436f0f19a38f667ea3078821040559c68Alan Cox port->count++; 2591eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_unlock(&port->lock); 25921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 25931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2594eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (port->count == 1) { 25951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1st open on this device, init hardware */ 2596eeb4613436f0f19a38f667ea3078821040559c68Alan Cox retval = startup(info, tty); 25971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval < 0) 25981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 25991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 26001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2601eeb4613436f0f19a38f667ea3078821040559c68Alan Cox retval = tty_port_block_til_ready(&info->port, tty, filp); 26021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) { 26031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 26041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):block_til_ready(%s) returned %d\n", 26051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, retval); 26061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 26071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 26081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 26101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_open(%s) success\n", 26111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name); 26121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 2613d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2614d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikcleanup: 26151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 26161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 26191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * /proc fs routines.... 26201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 26211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int line_info(char *buf, MGSLPC_INFO *info) 26231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 26241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char stat_buf[30]; 26251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 26261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 26271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = sprintf(buf, "%s:io:%04X irq:%d", 26291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name, info->io_base, info->irq_level); 26301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* output current serial signal states */ 26321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 26331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 26341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 2635d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds stat_buf[0] = 0; 26371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds stat_buf[1] = 0; 26381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 26391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|RTS"); 26401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_CTS) 26411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|CTS"); 26421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DTR) 26431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|DTR"); 26441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DSR) 26451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|DSR"); 26461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DCD) 26471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|CD"); 26481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RI) 26491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|RI"); 26501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 26521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " HDLC txok:%d rxok:%d", 26531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txok, info->icount.rxok); 26541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.txunder) 26551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " txunder:%d", info->icount.txunder); 26561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.txabort) 26571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " txabort:%d", info->icount.txabort); 26581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxshort) 2659d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik ret += sprintf(buf+ret, " rxshort:%d", info->icount.rxshort); 26601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxlong) 26611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " rxlong:%d", info->icount.rxlong); 26621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxover) 26631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " rxover:%d", info->icount.rxover); 26641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxcrc) 26651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " rxcrc:%d", info->icount.rxcrc); 26661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 26671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " ASYNC tx:%d rx:%d", 26681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.tx, info->icount.rx); 26691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.frame) 26701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " fe:%d", info->icount.frame); 26711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.parity) 26721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " pe:%d", info->icount.parity); 26731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.brk) 2674d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik ret += sprintf(buf+ret, " brk:%d", info->icount.brk); 26751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.overrun) 26761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " oe:%d", info->icount.overrun); 26771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2678d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Append serial signal status to end */ 26801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, " %s\n", stat_buf+1); 2681d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += sprintf(buf+ret, "txactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", 26831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_active,info->bh_requested,info->bh_running, 26841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh); 2685d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 26871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Called to print information about devices 26901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 26911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_read_proc(char *page, char **start, off_t off, int count, 26921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int *eof, void *data) 26931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 26941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len = 0, l; 26951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds off_t begin = 0; 26961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info; 2697d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len += sprintf(page, "synclink driver:%s\n", driver_version); 2699d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = mgslpc_device_list; 27011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while( info ) { 27021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds l = line_info(page + len, info); 27031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len += l; 27041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len+begin > off+count) 27051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 27061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len+begin < off) { 27071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds begin += len; 27081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = 0; 27091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = info->next_device; 27111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *eof = 1; 27141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdone: 27151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (off >= len+begin) 27161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 27171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *start = page + (off-begin); 27181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ((count < begin+len-off) ? count : begin+len-off); 27191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 27201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2721cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic int rx_alloc_buffers(MGSLPC_INFO *info) 27221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 27231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* each buffer has header and data */ 27241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_size = sizeof(RXBUF) + info->max_frame_size; 27251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* calculate total allocation size for 8 buffers */ 27271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_total_size = info->rx_buf_size * 8; 27281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* limit total allocated memory */ 27301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_buf_total_size > 0x10000) 27311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_total_size = 0x10000; 27321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* calculate number of buffers */ 27341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_count = info->rx_buf_total_size / info->rx_buf_size; 27351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf = kmalloc(info->rx_buf_total_size, GFP_KERNEL); 27371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_buf == NULL) 27381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 27391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_reset_buffers(info); 27411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 27421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 27431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2744cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_free_buffers(MGSLPC_INFO *info) 27451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2746735d5661d5c5f023a78fbe68e771e261040ff1b7Jesper Juhl kfree(info->rx_buf); 27471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf = NULL; 27481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 27491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2750cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic int claim_resources(MGSLPC_INFO *info) 27511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 27521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rx_alloc_buffers(info) < 0 ) { 27531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "Cant allocate rx buffer %s\n", info->device_name); 27541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_resources(info); 27551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2756d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik } 27571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 27581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 27591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2760cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void release_resources(MGSLPC_INFO *info) 27611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 27621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 27631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("release_resources(%s)\n", info->device_name); 27641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_free_buffers(info); 27651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 27661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Add the specified device instance data structure to the 27681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * global linked list of devices and increment the device count. 2769d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 27701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: info pointer to device instance data 27711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2772cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void mgslpc_add_device(MGSLPC_INFO *info) 27731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 27741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->next_device = NULL; 27751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->line = mgslpc_device_count; 27761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sprintf(info->device_name,"ttySLP%d",info->line); 2777d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->line < MAX_DEVICE_COUNT) { 27791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maxframe[info->line]) 27801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = maxframe[info->line]; 27811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_count++; 2784d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!mgslpc_device_list) 27861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_list = info; 2787d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik else { 27881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *current_dev = mgslpc_device_list; 27891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while( current_dev->next_device ) 27901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds current_dev = current_dev->next_device; 27911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds current_dev->next_device = info; 27921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2793d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->max_frame_size < 4096) 27951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = 4096; 27961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (info->max_frame_size > 65535) 27971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = 65535; 2798d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "SyncLink PC Card %s:IO=%04X IRQ=%d\n", 28001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name, info->io_base, info->irq_level); 28011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2802af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 28031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_init(info); 28041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2807cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void mgslpc_remove_device(MGSLPC_INFO *remove_info) 28081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = mgslpc_device_list; 28101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *last = NULL; 28111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(info) { 28131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info == remove_info) { 28141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (last) 28151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last->next_device = info->next_device; 28161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 28171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_list = info->next_device; 2818af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 28191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_exit(info); 28201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_resources(info); 28221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(info); 28231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_count--; 28241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 28251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 28261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last = info; 28271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = info->next_device; 28281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 28291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28314af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowskistatic struct pcmcia_device_id mgslpc_ids[] = { 28324af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski PCMCIA_DEVICE_MANF_CARD(0x02c5, 0x0050), 28334af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski PCMCIA_DEVICE_NULL 28344af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski}; 28354af48c8c16dfc37400f63633373dd180b5540eadDominik BrodowskiMODULE_DEVICE_TABLE(pcmcia, mgslpc_ids); 28364af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski 28371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct pcmcia_driver mgslpc_driver = { 28381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .owner = THIS_MODULE, 28391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .drv = { 28401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "synclink_cs", 28411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 284215b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski .probe = mgslpc_probe, 2843cc3b4866bee996c922e875b8c8efe9f0d8803aaeDominik Brodowski .remove = mgslpc_detach, 28444af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski .id_table = mgslpc_ids, 284598e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski .suspend = mgslpc_suspend, 284698e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski .resume = mgslpc_resume, 28471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 28481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2849b68e31d0ebbcc909d1941f9f230c9d062a3a13d3Jeff Dikestatic const struct tty_operations mgslpc_ops = { 28501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = mgslpc_open, 28511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = mgslpc_close, 28521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = mgslpc_write, 28531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .put_char = mgslpc_put_char, 28541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_chars = mgslpc_flush_chars, 28551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = mgslpc_write_room, 28561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = mgslpc_chars_in_buffer, 28571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_buffer = mgslpc_flush_buffer, 28581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = mgslpc_ioctl, 28591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = mgslpc_throttle, 28601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = mgslpc_unthrottle, 28611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .send_xchar = mgslpc_send_xchar, 28621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .break_ctl = mgslpc_break, 28631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .wait_until_sent = mgslpc_wait_until_sent, 28641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read_proc = mgslpc_read_proc, 28651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = mgslpc_set_termios, 28661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = tx_pause, 28671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = tx_release, 28681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hangup = mgslpc_hangup, 28691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = tiocmget, 28701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = tiocmset, 28711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 28721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void synclink_cs_cleanup(void) 28741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 28761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Unloading %s: version %s\n", driver_name, driver_version); 28781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(mgslpc_device_list) 28801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_remove_device(mgslpc_device_list); 28811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (serial_driver) { 28831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = tty_unregister_driver(serial_driver))) 28841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d) failed to unregister tty driver err=%d\n", 28851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,rc); 28861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(serial_driver); 28871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 28881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pcmcia_unregister_driver(&mgslpc_driver); 28901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init synclink_cs_init(void) 28931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 28951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (break_on_load) { 28971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_get_text_ptr(); 28981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BREAKPOINT(); 28991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s %s\n", driver_name, driver_version); 29021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = pcmcia_register_driver(&mgslpc_driver)) < 0) 29041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 29051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver = alloc_tty_driver(MAX_DEVICE_COUNT); 29071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!serial_driver) { 29081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -ENOMEM; 29091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto error; 29101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Initialize the tty_driver structure */ 2913d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->owner = THIS_MODULE; 29151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->driver_name = "synclink_cs"; 29161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->name = "ttySLP"; 29171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->major = ttymajor; 29181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->minor_start = 64; 29191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->type = TTY_DRIVER_TYPE_SERIAL; 29201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->subtype = SERIAL_TYPE_NORMAL; 29211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->init_termios = tty_std_termios; 29221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->init_termios.c_cflag = 29231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds B9600 | CS8 | CREAD | HUPCL | CLOCAL; 29241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->flags = TTY_DRIVER_REAL_RAW; 29251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_set_operations(serial_driver, &mgslpc_ops); 29261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = tty_register_driver(serial_driver)) < 0) { 29281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):Couldn't register serial driver\n", 29291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__); 29301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(serial_driver); 29311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver = NULL; 29321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto error; 29331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2934d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s %s, tty major#%d\n", 29361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver_name, driver_version, 29371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->major); 2938d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 29401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserror: 29421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds synclink_cs_cleanup(); 29431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 29441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 29451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2946d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void __exit synclink_cs_exit(void) 29471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 29481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds synclink_cs_cleanup(); 29491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 29501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(synclink_cs_init); 29521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(synclink_cs_exit); 29531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_set_rate(MGSLPC_INFO *info, unsigned char channel, unsigned int rate) 29551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 29561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int M, N; 29571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 29581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2959d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* note:standard BRG mode is broken in V3.2 chip 2960d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * so enhanced mode is always used 29611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 29621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rate) { 29641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N = 3686400 / rate; 29651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!N) 29661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N = 1; 29671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N >>= 1; 29681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (M = 1; N > 64 && M < 16; M++) 29691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N >>= 1; 29701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N--; 29711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* BGR[5..0] = N 29731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BGR[9..6] = M 29741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BGR[7..0] contained in BGR register 29751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BGR[9..8] contained in CCR2[7..6] 29761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * divisor = (N+1)*2^M 29771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: M *must* not be zero (causes asymetric duty cycle) 2979d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 29801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (unsigned char) (channel + BGR), 29811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (unsigned char) ((M << 6) + N)); 29821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, (unsigned char) (channel + CCR2)) & 0x3f; 29831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= ((M << 4) & 0xc0); 29841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (unsigned char) (channel + CCR2), val); 29851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 29871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Enabled the AUX clock output at the specified frequency. 29891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 29901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void enable_auxclk(MGSLPC_INFO *info) 29911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 29921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 2993d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MODE 29951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 MDS[1..0] 10 = transparent HDLC mode 29971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 ADM Address Mode, 0 = no addr recognition 29981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 TMD Timer Mode, 0 = external 29991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 RAC Receiver Active, 0 = inactive 30001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RTS 0=RTS active during xmit, 1=RTS always active 30011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TRS Timer Resolution, 1=512 30021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TLP Test Loop, 0 = no loop 30031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1000 0010 3005d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 30061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x82; 3007d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3008d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* channel B RTS is used to enable AUXCLK driver on SP505 */ 30091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed) 30101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; 30111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + MODE, val); 3012d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 30131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR0 30141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 PU Power Up, 1=active, 0=power down 30161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 MCE Master Clock Enable, 1=enabled 30171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Reserved, 0 30181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..02 SC[2..0] Encoding 30191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 SM[1..0] Serial Mode, 00=HDLC 30201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11000000 3022d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 30231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR0, 0xc0); 3024d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 30251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR1 30261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 SFLG Shared Flag, 0 = disable shared flags 30281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 GALP Go Active On Loop, 0 = not used 30291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 GLP Go On Loop, 0 = not used 30301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ODS Output Driver Select, 1=TxD is push-pull output 30311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 ITF Interframe Time Fill, 0=mark, 1=flag 30321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02..00 CM[2..0] Clock Mode 30331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 0111 3035d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 30361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR1, 0x17); 3037d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 30381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR2 (Channel B) 30391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 BGR[9..8] Baud rate bits 9..8 30411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value 30421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 SSEL Clock source select, 1=submode b 30431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 TOE 0=TxCLK is input, 1=TxCLK is output 30441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RWX Read/Write Exchange 0=disabled 30451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 C32, CRC select, 0=CRC-16, 1=CRC-32 30461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DIV, data inversion 0=disabled, 1=enabled 30471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0011 1000 3049d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 30501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed) 30511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR2, 0x38); 30521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 30531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR2, 0x30); 3054d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 30551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR4 30561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 MCK4 Master Clock Divide by 4, 1=enabled 30581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled 30591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 TST1 Test Pin, 0=normal operation 30601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ICD Ivert Carrier Detect, 1=enabled (active low) 30611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..02 Reserved, must be 0 30621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 RFT[1..0] RxFIFO Threshold 00=32 bytes 30631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 0000 3065d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 30661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR4, 0x50); 3067d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 30681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if auxclk not enabled, set internal BRG so 30691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * CTS transitions can be detected (requires TxC) 3070d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 30711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed) 30721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHB, info->params.clock_speed); 30731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 30741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHB, 921600); 30751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 30761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3077d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void loopback_enable(MGSLPC_INFO *info) 30781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 30791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 3080d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3081d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* CCR1:02..00 CM[2..0] Clock Mode = 111 (clock mode 7) */ 30821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + CCR1) | (BIT2 + BIT1 + BIT0); 30831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR1, val); 3084d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3085d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* CCR2:04 SSEL Clock source select, 1=submode b */ 30861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + CCR2) | (BIT4 + BIT5); 30871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR2, val); 3088d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3089d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* set LinkSpeed if available, otherwise default to 2Mbps */ 30901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.clock_speed) 30911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.clock_speed); 30921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 30931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, 1843200); 3094d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3095d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:00 TLP Test Loop, 1=loopback enabled */ 30961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + MODE) | BIT0; 30971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 30981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 30991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3100cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void hdlc_mode(MGSLPC_INFO *info) 31011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 31021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 31031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char clkmode, clksubmode; 31041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3105d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* disable all interrupts */ 31061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, 0xffff); 31071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, 0xffff); 31081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, 0xff); 3109d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3110d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* assume clock mode 0a, rcv=RxC xmt=TxC */ 31111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = clksubmode = 0; 31121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_RXC_DPLL 31131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && info->params.flags & HDLC_FLAG_TXC_DPLL) { 3114d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 7a, rcv = DPLL, xmt = DPLL */ 31151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 7; 31161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->params.flags & HDLC_FLAG_RXC_BRG 31171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && info->params.flags & HDLC_FLAG_TXC_BRG) { 3118d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 7b, rcv = BRG, xmt = BRG */ 31191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 7; 31201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clksubmode = 1; 31211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->params.flags & HDLC_FLAG_RXC_DPLL) { 31221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_TXC_BRG) { 3123d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 6b, rcv = DPLL, xmt = BRG/16 */ 31241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 6; 31251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clksubmode = 1; 31261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3127d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 6a, rcv = DPLL, xmt = TxC */ 31281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 6; 31291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 31301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->params.flags & HDLC_FLAG_TXC_BRG) { 3131d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 0b, rcv = RxC, xmt = BRG */ 31321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clksubmode = 1; 31331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3134d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MODE 31361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 MDS[1..0] 10 = transparent HDLC mode 31381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 ADM Address Mode, 0 = no addr recognition 31391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 TMD Timer Mode, 0 = external 31401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 RAC Receiver Active, 0 = inactive 31411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RTS 0=RTS active during xmit, 1=RTS always active 31421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TRS Timer Resolution, 1=512 31431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TLP Test Loop, 0 = no loop 31441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1000 0010 3146d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x82; 31481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.loopback) 31491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; 3150d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3151d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* preserve RTS state */ 31521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 31531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; 31541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 3155d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR0 31571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 PU Power Up, 1=active, 0=power down 31591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 MCE Master Clock Enable, 1=enabled 31601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Reserved, 0 31611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..02 SC[2..0] Encoding 31621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 SM[1..0] Serial Mode, 00=HDLC 31631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11000000 3165d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0xc0; 31671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->params.encoding) 31681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 31691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_NRZI: 31701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT3; 31711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 31721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_BIPHASE_SPACE: 31731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4; 31741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; // FM0 31751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_BIPHASE_MARK: 31761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4 + BIT2; 31771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; // FM1 31781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_BIPHASE_LEVEL: 31791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4 + BIT3; 31801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; // Manchester 31811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 31821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR0, val); 3183d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR1 31851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 SFLG Shared Flag, 0 = disable shared flags 31871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 GALP Go Active On Loop, 0 = not used 31881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 GLP Go On Loop, 0 = not used 31891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ODS Output Driver Select, 1=TxD is push-pull output 31901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 ITF Interframe Time Fill, 0=mark, 1=flag 31911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02..00 CM[2..0] Clock Mode 31921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 0000 3194d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x10 + clkmode; 31961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR1, val); 3197d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR2 31991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 BGR[9..8] Baud rate bits 9..8 32011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value 32021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 SSEL Clock source select, 1=submode b 32031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 TOE 0=TxCLK is input, 0=TxCLK is input 32041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RWX Read/Write Exchange 0=disabled 32051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 C32, CRC select, 0=CRC-16, 1=CRC-32 32061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DIV, data inversion 0=disabled, 1=enabled 32071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3209d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 32111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clkmode == 2 || clkmode == 3 || clkmode == 6 32121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || clkmode == 7 || (clkmode == 0 && clksubmode == 1)) 32131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 32141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clksubmode) 32151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4; 32161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type == HDLC_CRC_32_CCITT) 32171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT1; 32181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.encoding == HDLC_ENCODING_NRZB) 32191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; 32201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR2, val); 3221d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 32221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR3 32231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 PRE[1..0] Preamble count 00=1, 01=2, 10=4, 11=8 32251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 EPT Enable preamble transmission, 1=enabled 32261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 RADD Receive address pushed to FIFO, 0=disabled 32271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 CRL CRC Reset Level, 0=FFFF 32281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RCRC Rx CRC 0=On 1=Off 32291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TCRC Tx CRC 0=On 1=Off 32301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 PSD DPLL Phase Shift Disable 32311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3233d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 32351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type == HDLC_CRC_NONE) 32361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2 + BIT1; 32371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE) 32381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 32391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->params.preamble_length) 32401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 32411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_LENGTH_16BITS: 32421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 32431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 32441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_LENGTH_32BITS: 32451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 32461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 32471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_LENGTH_64BITS: 32481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT7 + BIT6; 32491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 32501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 32511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR3, val); 3252d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3253d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* PRE - Preamble pattern */ 32541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0; 32551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->params.preamble) 32561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 32571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_FLAGS: val = 0x7e; break; 32581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_10: val = 0xaa; break; 32591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_01: val = 0x55; break; 32601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_ONES: val = 0xff; break; 32611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 32621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + PRE, val); 3263d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 32641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR4 32651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 MCK4 Master Clock Divide by 4, 1=enabled 32671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled 32681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 TST1 Test Pin, 0=normal operation 32691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ICD Ivert Carrier Detect, 1=enabled (active low) 32701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..02 Reserved, must be 0 32711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 RFT[1..0] RxFIFO Threshold 00=32 bytes 32721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 0000 3274d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x50; 32761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR4, val); 32771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_RXC_DPLL) 32781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.clock_speed * 16); 32791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 32801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.clock_speed); 3281d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 32821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RLCR Receive length check register 32831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 7 1=enable receive length check 32851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 6..0 Max frame length = (RL + 1) * 32 3286d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + RLCR, 0); 3288d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 32891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* XBCH Transmit Byte Count High 32901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 DMA mode, 0 = interrupt driven 32921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 NRM, 0=ABM (ignored) 32931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 CAS Carrier Auto Start 32941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 XC Transmit Continuously (ignored) 32951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..00 XBC[10..8] Transmit byte count bits 10..8 32961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3298d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 33001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_DCD) 33011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 33021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + XBCH, val); 33031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enable_auxclk(info); 33041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.loopback || info->testing_irq) 33051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds loopback_enable(info); 33061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_CTS) 33071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 33081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHB, IRQ_CTS); 3309d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* PVR[3] 1=AUTO CTS active */ 33101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + PVR, BIT3); 33111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 33121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + PVR, BIT3); 33131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, 33151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_RXEOM + IRQ_RXFIFO + IRQ_ALLSENT + 33161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_UNDERRUN + IRQ_TXFIFO); 33171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET); 33181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_command_complete(info, CHA); 33191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_reg16(info, CHA + ISR); /* clear pending IRQs */ 3320d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 33211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Master clock mode enabled above to allow reset commands 33221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to complete even if no data clocks are present. 33231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Disable master clock mode for normal communications because 33251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * V3.2 of the ESCC2 has a bug that prevents the transmit all sent 33261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * IRQ when in master clock mode. 33271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Leave master clock mode enabled for IRQ test because the 33291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * timer IRQ used by the test can only happen in master clock mode. 3330d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 33311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->testing_irq) 33321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + CCR0, BIT6); 33331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_set_idle(info); 33351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 33371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_stop(info); 33381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 33391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3340cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_stop(MGSLPC_INFO *info) 33411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 33421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 33431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_stop(%s)\n", 33441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 3345d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3346d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:03 RAC Receiver Active, 0=inactive */ 33471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + MODE, BIT3); 33481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33490fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_enabled = false; 33500fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_overflow = false; 33511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 33521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3353cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_start(MGSLPC_INFO *info) 33541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 33551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 33561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_start(%s)\n", 33571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 33581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_reset_buffers(info); 33600fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_enabled = false; 33610fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_overflow = false; 33621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3363d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:03 RAC Receiver Active, 1=active */ 33641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + MODE, BIT3); 33651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33660fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_enabled = true; 33671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 33681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3369eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void tx_start(MGSLPC_INFO *info, struct tty_struct *tty) 33701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 33711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 33721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):tx_start(%s)\n", 33731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 3374d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 33751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count) { 33761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If auto RTS enabled and RTS is inactive, then assert */ 33771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RTS and set a flag indicating that the driver should */ 33781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* negate RTS when the transmission completes. */ 33790fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->drop_rts_on_tx_done = false; 33801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_RTS) { 33821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 33831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->serial_signals & SerialSignal_RTS)) { 33841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS; 33851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 33860fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->drop_rts_on_tx_done = true; 33871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 33881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 33891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) { 33911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) { 33920fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = true; 3393eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_ready(info, tty); 33941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 33951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 33960fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = true; 3397eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_ready(info, tty); 339840565f1962c5be9b9e285e05af01ab7771534868Jiri Slaby mod_timer(&info->tx_timer, jiffies + 339940565f1962c5be9b9e285e05af01ab7771534868Jiri Slaby msecs_to_jiffies(5000)); 34001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 34011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 34021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_enabled) 34040fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_enabled = true; 34051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 34061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3407cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void tx_stop(MGSLPC_INFO *info) 34081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 34091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 34101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):tx_stop(%s)\n", 34111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 3412d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3413d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik del_timer(&info->tx_timer); 34141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34150fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_enabled = false; 34160fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 34171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 34181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Reset the adapter to a known state and prepare it for further use. 34201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3421cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void reset_device(MGSLPC_INFO *info) 34221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3423d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* power up both channels (set BIT7) */ 34241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR0, 0x80); 34251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR0, 0x80); 34261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, 0); 34271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + MODE, 0); 3428d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3429d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* disable all interrupts */ 34301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, 0xffff); 34311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, 0xffff); 34321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, 0xff); 3433d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* PCR Port Configuration Register 34351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..04 DEC[3..0] Serial I/F select outputs 34371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 output, 1=AUTO CTS control enabled 34381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RI Ring Indicator input 0=active 34391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 DSR input 0=active 34401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DTR output 0=active 34411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0110 3443d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, PCR, 0x06); 3445d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* PVR Port Value Register 34471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..04 DEC[3..0] Serial I/F select (0000=disabled) 34491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 AUTO CTS output 1=enabled 34501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RI Ring Indicator input 34511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 DSR input 34521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DTR output (1=inactive) 34531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0001 34551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 34561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// write_reg(info, PVR, PVR_DTR); 3457d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* IPC Interrupt Port Configuration 34591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 VIS 1=Masked interrupts visible 34611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06..05 Reserved, 0 34621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..03 SLA Slave address, 00 ignored 34631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 CASM Cascading Mode, 1=daisy chain 34641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 IC[1..0] Interrupt Config, 01=push-pull output, active low 34651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0101 3467d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, IPC, 0x05); 34691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 34701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3471cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void async_mode(MGSLPC_INFO *info) 34721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 34731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 34741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3475d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* disable all interrupts */ 34761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, 0xffff); 34771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, 0xffff); 34781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, 0xff); 3479d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MODE 34811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 Reserved, 0 34831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 FRTS RTS State, 0=active 34841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 FCTS Flow Control on CTS 34851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 FLON Flow Control Enable 34861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 RAC Receiver Active, 0 = inactive 34871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RTS 0=Auto RTS, 1=manual RTS 34881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TRS Timer Resolution, 1=512 34891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TLP Test Loop, 0 = no loop 34901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0110 3492d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x06; 34941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.loopback) 34951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; 3496d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3497d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* preserve RTS state */ 34981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->serial_signals & SerialSignal_RTS)) 34991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 35001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 3501d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR0 35031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 PU Power Up, 1=active, 0=power down 35051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 MCE Master Clock Enable, 1=enabled 35061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Reserved, 0 35071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..02 SC[2..0] Encoding, 000=NRZ 35081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 SM[1..0] Serial Mode, 11=Async 35091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1000 0011 3511d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR0, 0x83); 3513d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR1 35151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..05 Reserved, 0 35171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ODS Output Driver Select, 1=TxD is push-pull output 35181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 BCR Bit Clock Rate, 1=16x 35191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02..00 CM[2..0] Clock Mode, 111=BRG 35201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 1111 3522d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR1, 0x1f); 3524d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR2 (channel A) 35261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 BGR[9..8] Baud rate bits 9..8 35281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value 35291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 SSEL Clock source select, 1=submode b 35301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 TOE 0=TxCLK is input, 0=TxCLK is input 35311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RWX Read/Write Exchange 0=disabled 35321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 Reserved, 0 35331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DIV, data inversion 0=disabled, 1=enabled 35341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 0000 3536d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR2, 0x10); 3538d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR3 35401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..01 Reserved, 0 35421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 PSD DPLL Phase Shift Disable 35431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3545d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR3, 0); 3547d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR4 35491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 MCK4 Master Clock Divide by 4, 1=enabled 35511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled 35521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 TST1 Test Pin, 0=normal operation 35531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ICD Ivert Carrier Detect, 1=enabled (active low) 35541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..00 Reserved, must be 0 35551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 0000 3557d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR4, 0x50); 35591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.data_rate * 16); 3560d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* DAFO Data Format 35621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 Reserved, 0 35641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 XBRK transmit break, 0=normal operation 35651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Stop bits (0=1, 1=2) 35661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..03 PAR[1..0] Parity (01=odd, 10=even) 35671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 PAREN Parity Enable 35681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 CHL[1..0] Character Length (00=8, 01=7) 35691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3570d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 35721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.data_bits != 8) 35731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; /* 7 bits */ 35741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.stop_bits != 1) 35751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 35761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.parity != ASYNC_PARITY_NONE) 35771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 35781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; /* Parity enable */ 35791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.parity == ASYNC_PARITY_ODD) 35801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT3; 35811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 35821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4; 35831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 35841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + DAFO, val); 3585d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RFC Rx FIFO Control 35871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 Reserved, 0 35891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 DPS, 1=parity bit not stored in data byte 35901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 DXS, 0=all data stored in FIFO (including XON/XOFF) 35911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 RFDF Rx FIFO Data Format, 1=status byte stored in FIFO 35921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..02 RFTH[1..0], rx threshold, 11=16 status + 16 data byte 35931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 Reserved, 0 35941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TCDE Terminate Char Detect Enable, 0=disabled 35951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 1100 3597d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + RFC, 0x5c); 3599d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RLCR Receive length check register 36011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Max frame length = (RL + 1) * 32 3603d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 36041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + RLCR, 0); 3605d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* XBCH Transmit Byte Count High 36071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 DMA mode, 0 = interrupt driven 36091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 NRM, 0=ABM (ignored) 36101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 CAS Carrier Auto Start 36111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 XC Transmit Continuously (ignored) 36121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..00 XBC[10..8] Transmit byte count bits 10..8 36131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3615d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 36161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 36171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_DCD) 36181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 36191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + XBCH, val); 36201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_CTS) 36211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, IRQ_CTS); 3622d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3623d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:03 RAC Receiver Active, 1=active */ 36241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + MODE, BIT3); 36251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enable_auxclk(info); 36261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_CTS) { 36271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHB, IRQ_CTS); 3628d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* PVR[3] 1=AUTO CTS active */ 36291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + PVR, BIT3); 36301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 36311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + PVR, BIT3); 36321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, 36331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_RXEOM + IRQ_RXFIFO + IRQ_BREAK_ON + IRQ_RXTIME + 36341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_ALLSENT + IRQ_TXFIFO); 36351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET); 36361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_command_complete(info, CHA); 36371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_reg16(info, CHA + ISR); /* clear pending IRQs */ 36381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 36391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set the HDLC idle mode for the transmitter. 36411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3642cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void tx_set_idle(MGSLPC_INFO *info) 36431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3644d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* Note: ESCC2 only supports flags and one idle modes */ 36451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->idle_mode == HDLC_TXIDLE_FLAGS) 36461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + CCR1, BIT3); 36471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 36481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + CCR1, BIT3); 36491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 36501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* get state of the V24 status (input) signals. 36521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3653cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void get_signals(MGSLPC_INFO *info) 36541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 36551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char status = 0; 3656d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3657d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* preserve DTR and RTS */ 36581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS; 36591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (read_reg(info, CHB + VSTR) & BIT7) 36611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DCD; 36621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (read_reg(info, CHB + STAR) & BIT1) 36631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_CTS; 36641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = read_reg(info, CHA + PVR); 36661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(status & PVR_RI)) 36671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RI; 36681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(status & PVR_DSR)) 36691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DSR; 36701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 36711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set the state of DTR and RTS based on contents of 36731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * serial_signals member of device extension. 36741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3675cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void set_signals(MGSLPC_INFO *info) 36761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 36771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 36781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + MODE); 36801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) { 36811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 36821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= ~BIT6; 36831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 36841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 36851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 36861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 36871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; 36881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 36891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= ~BIT2; 36901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 36911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 36921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DTR) 36941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + PVR, PVR_DTR); 36951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 36961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + PVR, PVR_DTR); 36971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 36981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3699cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_reset_buffers(MGSLPC_INFO *info) 37001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 37011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds RXBUF *buf; 37021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 37031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_put = 0; 37051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_get = 0; 37061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_frame_count = 0; 37071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i=0 ; i < info->rx_buf_count ; i++) { 37081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = (RXBUF*)(info->rx_buf + (i * info->rx_buf_size)); 37091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->status = buf->count = 0; 37101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 37121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Attempt to return a received HDLC frame 37141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Only frames received without errors are returned. 37151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 37160fab6de09c71a976e5d765e1ff548b14be385153Joe Perches * Returns true if frame returned, otherwise false 37171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3718eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty) 37191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 37201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short status; 37211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds RXBUF *buf; 37221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int framesize = 0; 37231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 37240fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool return_frame = false; 3725d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 37261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_frame_count == 0) 37270fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return false; 37281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = (RXBUF*)(info->rx_buf + (info->rx_get * info->rx_buf_size)); 37301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = buf->status; 37321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 07 VFR 1=valid frame 37341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 RDO 1=data overrun 37351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 CRC 1=OK, 0=error 37361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 RAB 1=frame aborted 37371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 37381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((status & 0xf0) != 0xA0) { 37391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(status & BIT7) || (status & BIT4)) 37401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxabort++; 37411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (status & BIT6) 37421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxover++; 37431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (!(status & BIT5)) { 37441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxcrc++; 37451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type & HDLC_CRC_RETURN_EX) 37460fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return_frame = true; 37471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize = 0; 3749af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 37501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 3751198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa info->netdev->stats.rx_errors++; 3752198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa info->netdev->stats.rx_frame_errors++; 37531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 37551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 37560fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return_frame = true; 37571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_frame) 37591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize = buf->count; 37601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 37621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_get_frame(%s) status=%04X size=%d\n", 37631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name,status,framesize); 3764d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 37651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_DATA) 3766d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik trace_block(info, buf->data, framesize, 0); 3767d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 37681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (framesize) { 37691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->params.crc_type & HDLC_CRC_RETURN_EX && 37701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize+1 > info->max_frame_size) || 37711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize > info->max_frame_size) 37721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxlong++; 37731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 37741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & BIT5) 37751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxok++; 37761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type & HDLC_CRC_RETURN_EX) { 37781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *(buf->data + framesize) = status & BIT5 ? RX_OK:RX_CRC_ERROR; 37791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++framesize; 37801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3782af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 37831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 37841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_rx(info, buf->data, framesize); 37851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 37861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 37871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ldisc_receive_buf(tty, buf->data, info->flag_buf, framesize); 37881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 37921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->status = buf->count = 0; 37931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_frame_count--; 37941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_get++; 37951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_get >= info->rx_buf_count) 37961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_get = 0; 37971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 37981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37990fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 38001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 38011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38020fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool register_test(MGSLPC_INFO *info) 38031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3804d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik static unsigned char patterns[] = 38051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x00, 0xff, 0xaa, 0x55, 0x69, 0x96, 0x0f }; 3806fe971071a89c5c5184fc9f3482c7a8e997cf0520Tobias Klauser static unsigned int count = ARRAY_SIZE(patterns); 38071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int i; 38080fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool rc = true; 38091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 38101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 38121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 38131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < count; i++) { 38151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, XAD1, patterns[i]); 38161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, XAD2, patterns[(i + 1) % count]); 3817fe971071a89c5c5184fc9f3482c7a8e997cf0520Tobias Klauser if ((read_reg(info, XAD1) != patterns[i]) || 38181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (read_reg(info, XAD2) != patterns[(i + 1) % count])) { 38190fab6de09c71a976e5d765e1ff548b14be385153Joe Perches rc = false; 38201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 38211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 38251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 38261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 38271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38280fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool irq_test(MGSLPC_INFO *info) 38291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long end_time; 38311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 38321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 38341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 38351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38360fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->testing_irq = true; 38371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_mode(info); 38381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38390fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->irq_occurred = false; 38401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* init hdlc mode */ 38421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, IRQ_TIMER); 38441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + TIMR, 0); /* 512 cycles */ 38451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_START_TIMER); 38461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 38481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds end_time=100; 38501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(end_time-- && !info->irq_occurred) { 38511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(10); 38521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3853d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 38540fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->testing_irq = false; 38551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 38571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 38581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 3859d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 38600fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return info->irq_occurred; 38611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 38621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3863cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic int adapter_test(MGSLPC_INFO *info) 38641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!register_test(info)) { 38661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->init_error = DiagStatus_AddressFailure; 38671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):Register test failure for device %s Addr=%04X\n", 38681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name, (unsigned short)(info->io_base) ); 38691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 38701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!irq_test(info)) { 38731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->init_error = DiagStatus_IrqFailure; 38741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):Interrupt test failure for device %s IRQ=%d\n", 38751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name, (unsigned short)(info->irq_level) ); 38761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 38771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 38801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):device %s passed diagnostics\n", 38811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 38821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 38831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 38841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3885cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit) 38861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 38881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int linecount; 38891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (xmit) 38901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s tx data:\n",info->device_name); 38911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 38921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s rx data:\n",info->device_name); 3893d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 38941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(count) { 38951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count > 16) 38961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds linecount = 16; 38971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 38981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds linecount = count; 3899d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 39001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0;i<linecount;i++) 39011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%02X ",(unsigned char)data[i]); 39021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(;i<17;i++) 39031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" "); 39041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0;i<linecount;i++) { 39051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (data[i]>=040 && data[i]<=0176) 39061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%c",data[i]); 39071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 39081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("."); 39091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 3911d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 39121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data += linecount; 39131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= linecount; 39141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 39161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* HDLC frame time out 39181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * update stats and do tx completion processing 39191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3920cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void tx_timeout(unsigned long context) 39211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 39221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO*)context; 39231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 3924d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 39251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( debug_level >= DEBUG_LEVEL_INFO ) 39261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):tx_timeout(%s)\n", 39271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 39281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(info->tx_active && 39291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.mode == MGSL_MODE_HDLC) { 39301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txtimeout++; 39311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 39330fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 39341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 39351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 3937d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3938af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 39391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 39401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_tx_done(info); 39411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 39421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 3943eeb4613436f0f19a38f667ea3078821040559c68Alan Cox { 3944eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty = tty_port_tty_get(&info->port); 3945eeb4613436f0f19a38f667ea3078821040559c68Alan Cox bh_transmit(info, tty); 3946eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 3947eeb4613436f0f19a38f667ea3078821040559c68Alan Cox } 39481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 39491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3950af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 39511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 39531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) 39541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * set encoding and frame check sequence (FCS) options 39551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 39561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 39571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * encoding serial encoding setting 39581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * parity FCS setting 39591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 39601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 39611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 39621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_attach(struct net_device *dev, unsigned short encoding, 39631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short parity) 39641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 39651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 3966eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty; 39671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char new_encoding; 39681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short new_crctype; 39691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return error if TTY interface open */ 3971eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.count) 39721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 39731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (encoding) 39751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 39761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break; 39771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break; 39781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break; 39791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break; 39801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break; 39811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: return -EINVAL; 39821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (parity) 39851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 39861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break; 39871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break; 39881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break; 39891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: return -EINVAL; 39901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.encoding = new_encoding; 399353b3531bbbf70ac7551b32d1acc229d94de52658Alexey Dobriyan info->params.crc_type = new_crctype; 39941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if network interface up, reprogram hardware */ 3996eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->netcount) { 3997eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty = tty_port_tty_get(&info->port); 3998eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_program_hw(info, tty); 3999eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 4000eeb4613436f0f19a38f667ea3078821040559c68Alan Cox } 40011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 40031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 40041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 40061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by generic HDLC layer to send frame 40071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 40081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * skb socket buffer containing HDLC frame 40091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 40101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 40111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 40121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 40131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev) 40141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 40151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 40161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 40171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 40191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "%s:hdlc_xmit(%s)\n",__FILE__,dev->name); 40201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* stop sending until this frame completes */ 40221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_stop_queue(dev); 40231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy data to device buffers */ 4025d626f62b11e00c16e81e4308ab93d3f13551812aArnaldo Carvalho de Melo skb_copy_from_linear_data(skb, info->tx_buf, skb->len); 40261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_get = 0; 40271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_put = info->tx_count = skb->len; 40281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* update network statistics */ 4030198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_packets++; 4031198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_bytes += skb->len; 40321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* done with socket buffer, so free it */ 40341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_kfree_skb(skb); 40351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save start time for transmit timeout detection */ 40371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->trans_start = jiffies; 40381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* start hardware transmitter if necessary */ 40401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 4041eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (!info->tx_active) { 4042eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty = tty_port_tty_get(&info->port); 4043eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 4044eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 4045eeb4613436f0f19a38f667ea3078821040559c68Alan Cox } 40461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 40471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 40491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 40501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 40521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer when interface enabled 40531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * claim resources and initialize hardware 40541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 40551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 40561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 40571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 40581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 40591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_open(struct net_device *dev) 40601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 40611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 4062eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty; 40631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 40641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 40651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 40671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s:hdlcdev_open(%s)\n",__FILE__,dev->name); 40681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* generic HDLC layer open processing */ 40701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = hdlc_open(dev))) 40711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 40721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* arbitrate between network and tty opens */ 40741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 4075eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.count != 0 || info->netcount != 0) { 40761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); 40771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 40781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 40791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 40801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netcount=1; 40811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 40821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4083eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty = tty_port_tty_get(&info->port); 40841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* claim resources and init adapter */ 4085eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if ((rc = startup(info, tty)) != 0) { 4086eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 40871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 40881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netcount=0; 40891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 40901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 40911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 40921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* assert DTR and RTS, apply hardware settings */ 40931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; 4094eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_program_hw(info, tty); 4095eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 40961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* enable network layer transmit */ 40981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->trans_start = jiffies; 40991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_start_queue(dev); 41001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* inform generic HDLC layer of current DCD status */ 41021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock, flags); 41031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 41041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock, flags); 4105fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa if (info->serial_signals & SerialSignal_DCD) 4106fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_on(dev); 4107fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa else 4108fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_off(dev); 41091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 41101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 41111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 41131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer when interface is disabled 41141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * shutdown hardware and release resources 41151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 41171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 41191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 41201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_close(struct net_device *dev) 41211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 41221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 4123eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty = tty_port_tty_get(&info->port); 41241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 41251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 41271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s:hdlcdev_close(%s)\n",__FILE__,dev->name); 41281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_stop_queue(dev); 41301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* shutdown adapter and release resources */ 4132eeb4613436f0f19a38f667ea3078821040559c68Alan Cox shutdown(info, tty); 4133eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 41341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_close(dev); 41351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 41371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netcount=0; 41381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 41391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 41411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 41421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 41441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer to process IOCTL call to network device 41451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 41471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ifr pointer to network interface request structure 41481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * cmd IOCTL command code 41491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 41511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 41521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 41531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 41541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const size_t size = sizeof(sync_serial_settings); 41551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sync_serial_settings new_line; 41561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; 41571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 41581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int flags; 41591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 41611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); 41621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return error if TTY interface open */ 4164eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.count) 41651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 41661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cmd != SIOCWANDEV) 41681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return hdlc_ioctl(dev, ifr, cmd); 41691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(ifr->ifr_settings.type) { 41711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case IF_GET_IFACE: /* return current sync_serial_settings */ 41721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; 41741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ifr->ifr_settings.size < size) { 41751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ifr->ifr_settings.size = size; /* data size wanted */ 41761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOBUFS; 41771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 41781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | 41801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | 41811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | 41821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); 41831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (flags){ 41851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; 41861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; 41871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break; 41881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break; 41891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: new_line.clock_type = CLOCK_DEFAULT; 41901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 41911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_line.clock_rate = info->params.clock_speed; 41931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_line.loopback = info->params.loopback ? 1:0; 41941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_to_user(line, &new_line, size)) 41961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 41971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 41981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */ 42001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!capable(CAP_NET_ADMIN)) 42021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EPERM; 42031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(&new_line, line, size)) 42041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 42051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (new_line.clock_type) 42071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 42081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break; 42091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break; 42101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break; 42111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break; 42121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_DEFAULT: flags = info->params.flags & 42131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | 42141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | 42151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | 42161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break; 42171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: return -EINVAL; 42181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 42191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_line.loopback != 0 && new_line.loopback != 1) 42211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 42221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | 42241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | 42251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | 42261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); 42271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.flags |= flags; 42281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.loopback = new_line.loopback; 42301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG)) 42321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.clock_speed = new_line.clock_rate; 42331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 42341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.clock_speed = 0; 42351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if network interface up, reprogram hardware */ 4237eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->netcount) { 4238eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty = tty_port_tty_get(&info->port); 4239eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_program_hw(info, tty); 4240eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 4241eeb4613436f0f19a38f667ea3078821040559c68Alan Cox } 42421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 42431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 42451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return hdlc_ioctl(dev, ifr, cmd); 42461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 42471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 42481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 42501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer when transmit timeout is detected 42511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 42531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 42541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_tx_timeout(struct net_device *dev) 42551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 42561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 42571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 42581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 42601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("hdlcdev_tx_timeout(%s)\n",dev->name); 42611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4262198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_errors++; 4263198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_aborted_errors++; 42641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 42661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 42671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 42681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_wake_queue(dev); 42701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 42711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 42731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when transmit completes 42741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reenable network layer transmit if stopped 42751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 42771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 42781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_tx_done(MGSLPC_INFO *info) 42791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 42801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (netif_queue_stopped(info->netdev)) 42811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_wake_queue(info->netdev); 42821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 42831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 42851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when frame received 42861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * pass frame to network layer 42871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 42891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * buf pointer to buffer contianing frame data 42901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * size count of data bytes in buf 42911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 42921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size) 42931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 42941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sk_buff *skb = dev_alloc_skb(size); 42951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *dev = info->netdev; 42961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 42981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("hdlcdev_rx(%s)\n",dev->name); 42991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (skb == NULL) { 43011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", dev->name); 4302198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.rx_dropped++; 43031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 43041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 43051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4306198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa memcpy(skb_put(skb, size), buf, size); 43071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4308198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa skb->protocol = hdlc_type_trans(skb, dev); 43091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4310198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.rx_packets++; 4311198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.rx_bytes += size; 43121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_rx(skb); 43141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4315198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->last_rx = jiffies; 43161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 43171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 43191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when adding device instance 43201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * do generic HDLC initialization 43211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 43221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 43231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 43241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 43251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 43261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_init(MGSLPC_INFO *info) 43271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 43281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 43291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *dev; 43301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_device *hdlc; 43311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate and initialize network and HDLC layer objects */ 43331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(dev = alloc_hdlcdev(info))) { 43351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "%s:hdlc device allocation failure\n",__FILE__); 43361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 43371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 43381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* for network layer reporting purposes only */ 43401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->base_addr = info->io_base; 43411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->irq = info->irq_level; 43421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* network layer callbacks and settings */ 43441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->do_ioctl = hdlcdev_ioctl; 43451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->open = hdlcdev_open; 43461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->stop = hdlcdev_close; 43471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->tx_timeout = hdlcdev_tx_timeout; 43481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->watchdog_timeo = 10*HZ; 43491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->tx_queue_len = 50; 43501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* generic HDLC layer callbacks and settings */ 43521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc = dev_to_hdlc(dev); 43531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc->attach = hdlcdev_attach; 43541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc->xmit = hdlcdev_xmit; 43551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* register objects with HDLC layer */ 43571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = register_hdlc_device(dev))) { 43581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); 43591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_netdev(dev); 43601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 43611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 43621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netdev = dev; 43641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 43651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 43661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 43681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when removing device instance 43691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * do generic HDLC cleanup 43701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 43711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 43721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 43731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_exit(MGSLPC_INFO *info) 43741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 43751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unregister_hdlc_device(info->netdev); 43761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_netdev(info->netdev); 43771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netdev = NULL; 43781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 43791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_HDLC */ 43811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4382