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> 5487687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan#include <linux/seq_file.h> 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/netdevice.h> 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/vmalloc.h> 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioctl.h> 613dd1247f4dee214a92b42e17818703ea71233288Robert P. J. Day#include <linux/synclink.h> 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/irq.h> 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/dma.h> 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/bitops.h> 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/types.h> 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/termios.h> 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/workqueue.h> 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/hdlc.h> 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <pcmcia/cistpl.h> 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <pcmcia/cisreg.h> 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <pcmcia/ds.h> 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 77af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINK_CS_MODULE)) 78af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#define SYNCLINK_GENERIC_HDLC 1 79af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#else 80af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#define SYNCLINK_GENERIC_HDLC 0 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GET_USER(error,value,addr) error = get_user(value,addr) 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define COPY_FROM_USER(error,dest,src,size) error = copy_from_user(dest,src,size) ? -EFAULT : 0 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PUT_USER(error,value,addr) error = put_user(value,addr) 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define COPY_TO_USER(error,dest,src,size) error = copy_to_user(dest,src,size) ? -EFAULT : 0 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic MGSL_PARAMS default_params = { 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSL_MODE_HDLC, /* unsigned long mode */ 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0, /* unsigned char loopback; */ 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_UNDERRUN_ABORT15, /* unsigned short flags; */ 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_ENCODING_NRZI_SPACE, /* unsigned char encoding; */ 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0, /* unsigned long clock_speed; */ 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0xff, /* unsigned char addr_filter; */ 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_CRC_16_CCITT, /* unsigned short crc_type; */ 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_PREAMBLE_LENGTH_8BITS, /* unsigned char preamble_length; */ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_PREAMBLE_PATTERN_NONE, /* unsigned char preamble; */ 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9600, /* unsigned long data_rate; */ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8, /* unsigned char data_bits; */ 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1, /* unsigned char stop_bits; */ 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ASYNC_PARITY_NONE /* unsigned char parity; */ 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstypedef struct 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count; 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char status; 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char data[1]; 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} RXBUF; 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The queue of BH actions to be performed */ 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BH_RECEIVE 1 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BH_TRANSMIT 2 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BH_STATUS 4 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IO_PIN_SHUTDOWN_LIMIT 100 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK)) 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct _input_signal_events { 124d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik int ri_up; 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ri_down; 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dsr_up; 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dsr_down; 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dcd_up; 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dcd_down; 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cts_up; 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cts_down; 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Device instance data structure 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 138d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstypedef struct _mgslpc_info { 140eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_port port; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *if_ptr; /* General purpose pointer (used by SPPP) */ 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int magic; 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int line; 144d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount icount; 146d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int timeout; 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int x_char; /* xon/xoff character */ 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char read_status_mask; 150d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik unsigned char ignore_status_mask; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *tx_buf; 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tx_put; 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tx_get; 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tx_count; 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* circular list of fixed length rx buffers */ 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *rx_buf; /* memory allocated for all rx buffers */ 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_buf_total_size; /* size of memory allocated for rx buffers */ 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_put; /* index of next empty rx buffer */ 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_get; /* index of next full rx buffer */ 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_buf_size; /* size in bytes of single rx buffer */ 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_buf_count; /* total number of rx buffers */ 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_frame_count; /* number of full rx buffers */ 166d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t status_event_wait_q; 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t event_wait_q; 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timer_list tx_timer; /* HDLC transmit timeout timer */ 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct _mgslpc_info *next_device; /* device list link */ 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short imra_value; 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short imrb_value; 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char pim_value; 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct work_struct task; /* task structure for scheduling bh */ 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 max_frame_size; 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 pending_bh; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1830fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool bh_running; 1840fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool bh_requested; 185d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dcd_chkcount; /* check counts to prevent */ 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int cts_chkcount; /* too many IRQs if a signal */ 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dsr_chkcount; /* is floating */ 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ri_chkcount; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1910fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool rx_enabled; 1920fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool rx_overflow; 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1940fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool tx_enabled; 1950fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool tx_active; 1960fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool tx_aborting; 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 idle_mode; 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int if_mode; /* serial interface selection (RS-232, v.35 etc) */ 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char device_name[25]; /* device instance name */ 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int io_base; /* base I/O address of adapter */ 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int irq_level; 205d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSL_PARAMS params; /* communications parameters */ 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char serial_signals; /* current serial signal states */ 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2100fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool irq_occurred; /* for diagnostics use */ 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char testing_irq; 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int init_error; /* startup error (DIAGS) */ 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char flag_buf[MAX_ASYNC_BUFFER_SIZE]; 2150fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool drop_rts_on_tx_done; 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct _input_signal_events input_signal_events; 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* PCMCIA support */ 220fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski struct pcmcia_device *p_dev; 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int stop; 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SPPP/Cisco HDLC device parts */ 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int netcount; 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t netlock; 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 227af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *netdev; 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} MGSLPC_INFO; 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MGSLPC_MAGIC 0x5402 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The size of the serial xmit buffer is 1 page, or 4096 bytes 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXBUFSIZE 4096 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 240d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CHA 0x00 /* channel A offset */ 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CHB 0x40 /* channel B offset */ 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME: PPC has PVR defined in asm/reg.h. For now we just undef it. 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef PVR 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RXFIFO 0 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXFIFO 0 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STAR 0x20 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMDR 0x20 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RSTA 0x21 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PRE 0x21 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MODE 0x22 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TIMR 0x23 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XAD1 0x24 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XAD2 0x25 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAH1 0x26 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAH2 0x27 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DAFO 0x27 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAL1 0x28 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RFC 0x28 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RHCR 0x29 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RAL2 0x29 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RBCL 0x2a 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XBCL 0x2a 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RBCH 0x2b 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XBCH 0x2b 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR0 0x2c 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR1 0x2d 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR2 0x2e 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR3 0x2f 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VSTR 0x34 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BGR 0x34 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RLCR 0x35 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AML 0x36 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AMH 0x37 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GIS 0x38 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IVA 0x38 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IPC 0x39 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ISR 0x3a 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IMR 0x3a 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR 0x3c 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PIS 0x3d 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PIM 0x3d 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PCR 0x3e 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CCR4 0x3f 289d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// IMR/ISR 291d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_BREAK_ON BIT15 // rx break detected 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_DATAOVERRUN BIT14 // receive data overflow 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_ALLSENT BIT13 // all sent 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_UNDERRUN BIT12 // transmit data underrun 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_TIMER BIT11 // timer interrupt 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_CTS BIT10 // CTS status change 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_TXREPEAT BIT9 // tx message repeat 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_TXFIFO BIT8 // transmit pool ready 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_RXEOM BIT7 // receive message end 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_EXITHUNT BIT6 // receive frame start 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_RXTIME BIT6 // rx char timeout 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_DCD BIT2 // carrier detect status change 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_OVERRUN BIT1 // receive frame overflow 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define IRQ_RXFIFO BIT0 // receive pool full 306d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// STAR 308d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define XFW BIT6 // transmit FIFO write enable 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CEC BIT2 // command executing 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CTS BIT1 // CTS state 312d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_DTR BIT0 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_DSR BIT1 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_RI BIT2 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_AUTOCTS BIT3 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_RS232 0x20 /* 0010b */ 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_V35 0xe0 /* 1110b */ 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PVR_RS422 0x40 /* 0100b */ 320d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 321d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik/* Register access functions */ 322d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define write_reg(info, reg, val) outb((val),(info)->io_base + (reg)) 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define read_reg(info, reg) inb((info)->io_base + (reg)) 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 326d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik#define read_reg16(info, reg) inw((info)->io_base + (reg)) 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define write_reg16(info, reg, val) outw((val), (info)->io_base + (reg)) 328d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define set_reg_bits(info, reg, mask) \ 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (reg), \ 331d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik (unsigned char) (read_reg(info, (reg)) | (mask))) 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define clear_reg_bits(info, reg, mask) \ 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (reg), \ 334d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik (unsigned char) (read_reg(info, (reg)) & ~(mask))) 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interrupt enable/disable routines 337d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 338d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (channel == CHA) { 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imra_value |= mask; 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHA + IMR, info->imra_value); 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imrb_value |= mask; 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHB + IMR, info->imrb_value); 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 348d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (channel == CHA) { 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imra_value &= ~mask; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHA + IMR, info->imra_value); 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imrb_value &= ~mask; 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHB + IMR, info->imrb_value); 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define port_irq_disable(info, mask) \ 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { info->pim_value |= (mask); write_reg(info, PIM, info->pim_value); } 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define port_irq_enable(info, mask) \ 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { info->pim_value &= ~(mask); write_reg(info, PIM, info->pim_value); } 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_start(MGSLPC_INFO *info); 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_stop(MGSLPC_INFO *info); 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 368eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void tx_start(MGSLPC_INFO *info, struct tty_struct *tty); 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_stop(MGSLPC_INFO *info); 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_set_idle(MGSLPC_INFO *info); 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void get_signals(MGSLPC_INFO *info); 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void set_signals(MGSLPC_INFO *info); 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void reset_device(MGSLPC_INFO *info); 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlc_mode(MGSLPC_INFO *info); 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void async_mode(MGSLPC_INFO *info); 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_timeout(unsigned long context); 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 382eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int carrier_raised(struct tty_port *port); 383fcc8ac1825d3d0fb81f73bc1a80ebc863168bb56Alan Coxstatic void dtr_rts(struct tty_port *port, int onoff); 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 385af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dev_to_port(D) (dev_to_hdlc(D)->priv) 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_tx_done(MGSLPC_INFO *info); 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size); 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_init(MGSLPC_INFO *info); 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_exit(MGSLPC_INFO *info); 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit); 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3950fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool register_test(MGSLPC_INFO *info); 3960fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool irq_test(MGSLPC_INFO *info); 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int adapter_test(MGSLPC_INFO *info); 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int claim_resources(MGSLPC_INFO *info); 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void release_resources(MGSLPC_INFO *info); 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_add_device(MGSLPC_INFO *info); 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_remove_device(MGSLPC_INFO *info); 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 404eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty); 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_reset_buffers(MGSLPC_INFO *info); 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int rx_alloc_buffers(MGSLPC_INFO *info); 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_free_buffers(MGSLPC_INFO *info); 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4097d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t mgslpc_isr(int irq, void *dev_id); 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bottom half interrupt handlers 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 414c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void bh_handler(struct work_struct *work); 415eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty); 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void bh_status(MGSLPC_INFO *info); 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ioctl handlers 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 42160b33c133ca0b7c0b6072c87234b63fee6e80558Alan Coxstatic int tiocmget(struct tty_struct *tty); 42220b9d17715017ae4dd4ec87fabc36d33b9de708eAlan Coxstatic int tiocmset(struct tty_struct *tty, 42320b9d17715017ae4dd4ec87fabc36d33b9de708eAlan Cox unsigned int set, unsigned int clear); 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_stats(MGSLPC_INFO *info, struct mgsl_icount __user *user_icount); 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_params(MGSLPC_INFO *info, MGSL_PARAMS __user *user_params); 426eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params, struct tty_struct *tty); 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_txidle(MGSLPC_INFO *info, int __user *idle_mode); 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_txidle(MGSLPC_INFO *info, int idle_mode); 429eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int set_txenable(MGSLPC_INFO *info, int enable, struct tty_struct *tty); 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tx_abort(MGSLPC_INFO *info); 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_rxenable(MGSLPC_INFO *info, int enable); 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int wait_events(MGSLPC_INFO *info, int __user *mask); 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic MGSLPC_INFO *mgslpc_device_list = NULL; 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_device_count = 0; 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Set this param to non-zero to load eax with the 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * .text section address and breakpoint on module load. 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is useful for use with gdb and add-symbol-file command. 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 44290ab5ee94171b3e28de6bb42ee30b527014e0be7Rusty Russellstatic bool break_on_load=0; 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver major number, defaults to zero to get auto 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * assigned major number. May be forced as module parameter. 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ttymajor=0; 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_level = 0; 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int maxframe[MAX_DEVICE_COUNT] = {0,}; 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(break_on_load, bool, 0); 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(ttymajor, int, 0); 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(debug_level, int, 0); 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param_array(maxframe, int, NULL, 0); 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *driver_name = "SyncLink PC Card driver"; 461a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghumstatic char *driver_version = "$Revision: 4.34 $"; 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct tty_driver *serial_driver; 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* number of characters left in xmit buffer before we ask for more */ 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WAKEUP_CHARS 256 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 468eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty); 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout); 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* PCMCIA prototypes */ 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 47315b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowskistatic int mgslpc_config(struct pcmcia_device *link); 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_release(u_long arg); 475cc3b4866bee996c922e875b8c8efe9f0d8803aaeDominik Brodowskistatic void mgslpc_detach(struct pcmcia_device *p_dev); 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1st function defined in .text section. Calling this function in 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * init_module() followed by a breakpoint allows a remote debugger 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (gdb) to get the .text address for the add-symbol-file command. 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This allows remote debugging of dynamically loadable modules. 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void* mgslpc_get_text_ptr(void) 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return mgslpc_get_text_ptr; 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * line discipline callback wrappers 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The wrappers maintain line discipline references 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * while calling into the line discipline. 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ldisc_receive_buf - pass receive data to line discipline 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ldisc_receive_buf(struct tty_struct *tty, 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const __u8 *data, char *flags, int count) 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_ldisc *ld; 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tty) 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ld = tty_ldisc_ref(tty); 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ld) { 505a352def21a642133758b868c71bee12ab34ad5c5Alan Cox if (ld->ops->receive_buf) 506a352def21a642133758b868c71bee12ab34ad5c5Alan Cox ld->ops->receive_buf(tty, data, flags, count); 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_ldisc_deref(ld); 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 511eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic const struct tty_port_operations mgslpc_port_ops = { 512eeb4613436f0f19a38f667ea3078821040559c68Alan Cox .carrier_raised = carrier_raised, 513fcc8ac1825d3d0fb81f73bc1a80ebc863168bb56Alan Cox .dtr_rts = dtr_rts 514eeb4613436f0f19a38f667ea3078821040559c68Alan Cox}; 515eeb4613436f0f19a38f667ea3078821040559c68Alan Cox 51615b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowskistatic int mgslpc_probe(struct pcmcia_device *link) 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info; 51915b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski int ret; 520fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("mgslpc_attach\n"); 523fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 524dd00cc486ab1c17049a535413d1751ef3482141cYoann Padioleau info = kzalloc(sizeof(MGSLPC_INFO), GFP_KERNEL); 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) { 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Error can't allocate device instance data\n"); 527f8cfa618dccbdc6dab5297f75779566a388a98fdDominik Brodowski return -ENOMEM; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->magic = MGSLPC_MAGIC; 531eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_port_init(&info->port); 532eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.ops = &mgslpc_port_ops; 533c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells INIT_WORK(&info->task, bh_handler); 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = 4096; 535eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.close_delay = 5*HZ/10; 536eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.closing_wait = 30*HZ; 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&info->status_event_wait_q); 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&info->event_wait_q); 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&info->lock); 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&info->netlock); 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); 542d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik info->idle_mode = HDLC_TXIDLE_FLAGS; 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imra_value = 0xffff; 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->imrb_value = 0xffff; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pim_value = 0xff; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 547fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski info->p_dev = link; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds link->priv = info; 549fd238232cd0ff4840ae6946bb338502154096d88Dominik Brodowski 550fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowski /* Initialize the struct pcmcia_device structure */ 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 55215b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski ret = mgslpc_config(link); 55315b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski if (ret) 55415b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski return ret; 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_add_device(info); 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 558f8cfa618dccbdc6dab5297f75779566a388a98fdDominik Brodowski return 0; 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Card has been inserted. 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 56400990e7ce0b0e596fe41d9c64d6933ea70084003Dominik Brodowskistatic int mgslpc_ioprobe(struct pcmcia_device *p_dev, void *priv_data) 565aaa8cfdada648a6bae32f62df76cc60137a2b323Dominik Brodowski{ 56690abdc3b973229bae98dd96649d9f7106cc177a4Dominik Brodowski return pcmcia_request_io(p_dev); 567aaa8cfdada648a6bae32f62df76cc60137a2b323Dominik Brodowski} 568aaa8cfdada648a6bae32f62df76cc60137a2b323Dominik Brodowski 56915b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowskistatic int mgslpc_config(struct pcmcia_device *link) 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = link->priv; 572cbf624f0e18c4a05219855663a3e5f9fe8f2d876Dominik Brodowski int ret; 573d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("mgslpc_config(0x%p)\n", link); 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 57700990e7ce0b0e596fe41d9c64d6933ea70084003Dominik Brodowski link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; 57800990e7ce0b0e596fe41d9c64d6933ea70084003Dominik Brodowski 579cbf624f0e18c4a05219855663a3e5f9fe8f2d876Dominik Brodowski ret = pcmcia_loop_config(link, mgslpc_ioprobe, NULL); 580cbf624f0e18c4a05219855663a3e5f9fe8f2d876Dominik Brodowski if (ret != 0) 581cbf624f0e18c4a05219855663a3e5f9fe8f2d876Dominik Brodowski goto failed; 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5837feabb6412ea23edd298c0fa90e5aa6733eb4a42Dominik Brodowski link->config_index = 8; 5847feabb6412ea23edd298c0fa90e5aa6733eb4a42Dominik Brodowski link->config_regs = PRESENT_OPTION; 585d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 586eb14120f743d29744d9475bffec56ff4ad43a749Dominik Brodowski ret = pcmcia_request_irq(link, mgslpc_isr); 587cbf624f0e18c4a05219855663a3e5f9fe8f2d876Dominik Brodowski if (ret) 588cbf624f0e18c4a05219855663a3e5f9fe8f2d876Dominik Brodowski goto failed; 5891ac71e5a35eebee60cdcf15b3980bd94498f037bDominik Brodowski ret = pcmcia_enable_device(link); 590cbf624f0e18c4a05219855663a3e5f9fe8f2d876Dominik Brodowski if (ret) 591cbf624f0e18c4a05219855663a3e5f9fe8f2d876Dominik Brodowski goto failed; 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5939a017a910346afd88ec2e065989903bf211a7d37Dominik Brodowski info->io_base = link->resource[0]->start; 594eb14120f743d29744d9475bffec56ff4ad43a749Dominik Brodowski info->irq_level = link->irq; 59515b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski return 0; 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 597cbf624f0e18c4a05219855663a3e5f9fe8f2d876Dominik Brodowskifailed: 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_release((u_long)link); 59915b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski return -ENODEV; 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Card has been removed. 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Unregister device and release PCMCIA configuration. 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If device is open, postpone until it is closed. 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_release(u_long arg) 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 608e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski struct pcmcia_device *link = (struct pcmcia_device *)arg; 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 610e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski if (debug_level >= DEBUG_LEVEL_INFO) 611e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski printk("mgslpc_release(0x%p)\n", link); 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 613e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski pcmcia_disable_device(link); 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 616fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowskistatic void mgslpc_detach(struct pcmcia_device *link) 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 618e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski if (debug_level >= DEBUG_LEVEL_INFO) 619e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski printk("mgslpc_detach(0x%p)\n", link); 620cc3b4866bee996c922e875b8c8efe9f0d8803aaeDominik Brodowski 621e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski ((MGSLPC_INFO *)link->priv)->stop = 1; 622e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski mgslpc_release((u_long)link); 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 624e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski mgslpc_remove_device((MGSLPC_INFO *)link->priv); 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 627fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowskistatic int mgslpc_suspend(struct pcmcia_device *link) 62898e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski{ 62998e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski MGSLPC_INFO *info = link->priv; 63098e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 63198e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski info->stop = 1; 63298e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 63398e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski return 0; 63498e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski} 63598e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 636fba395eee7d3f342ca739c20f5b3ee635d0420a0Dominik Brodowskistatic int mgslpc_resume(struct pcmcia_device *link) 63798e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski{ 63898e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski MGSLPC_INFO *info = link->priv; 63998e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 64098e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski info->stop = 0; 64198e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 64298e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski return 0; 64398e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski} 64498e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 64598e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski 6460fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic inline bool mgslpc_paranoia_check(MGSLPC_INFO *info, 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *name, const char *routine) 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef MGSLPC_PARANOIA_CHECK 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static const char *badmagic = 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Warning: bad magic number for mgsl struct (%s) in %s\n"; 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static const char *badinfo = 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Warning: null mgslpc_info for (%s) in %s\n"; 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) { 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(badinfo, name, routine); 6570fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->magic != MGSLPC_MAGIC) { 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(badmagic, name, routine); 6610fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 6650fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 6670fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return false; 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_RXFIFO BIT7 // release current rx FIFO 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_RXRESET BIT6 // receiver reset 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_RXFIFO_READ BIT5 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_START_TIMER BIT4 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_TXFIFO BIT3 // release current tx FIFO 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_TXEOM BIT1 // transmit end message 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CMD_TXRESET BIT0 // transmit reset 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6790fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool wait_command_complete(MGSLPC_INFO *info, unsigned char channel) 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i = 0; 682d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* wait for command completion */ 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (read_reg(info, (unsigned char)(channel+STAR)) & BIT2) { 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(1); 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (i++ == 1000) 6860fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return false; 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6880fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 691d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void issue_command(MGSLPC_INFO *info, unsigned char channel, unsigned char cmd) 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_command_complete(info, channel); 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (unsigned char) (channel + CMDR), cmd); 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_pause(struct tty_struct *tty) 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 701d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "tx_pause")) 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 705d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik printk("tx_pause(%s)\n",info->device_name); 706d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_enabled) 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void tx_release(struct tty_struct *tty) 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 717d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "tx_release")) 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 721d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik printk("tx_release(%s)\n",info->device_name); 722d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_enabled) 725eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Return next bottom half action to perform. 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * or 0 if nothing to do. 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int bh_action(MGSLPC_INFO *info) 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc = 0; 736d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->pending_bh & BH_RECEIVE) { 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh &= ~BH_RECEIVE; 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = BH_RECEIVE; 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->pending_bh & BH_TRANSMIT) { 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh &= ~BH_TRANSMIT; 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = BH_TRANSMIT; 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->pending_bh & BH_STATUS) { 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh &= ~BH_STATUS; 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = BH_STATUS; 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!rc) { 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Mark BH routine as complete */ 7520fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_running = false; 7530fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_requested = false; 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 755d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 757d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 761c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void bh_handler(struct work_struct *work) 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 763c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells MGSLPC_INFO *info = container_of(work, MGSLPC_INFO, task); 764eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty; 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int action; 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 769d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):bh_handler(%s) entry\n", 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 773d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7740fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_running = true; 775eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty = tty_port_tty_get(&info->port); 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while((action = bh_action(info)) != 0) { 778d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Process work item */ 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( debug_level >= DEBUG_LEVEL_BH ) 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):bh_handler() work item action=%d\n", 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,action); 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (action) { 785d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case BH_RECEIVE: 787eeb4613436f0f19a38f667ea3078821040559c68Alan Cox while(rx_get_frame(info, tty)); 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case BH_TRANSMIT: 790eeb4613436f0f19a38f667ea3078821040559c68Alan Cox bh_transmit(info, tty); 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case BH_STATUS: 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bh_status(info); 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* unknown work item ID */ 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Unknown work item ID=%08X!\n", action); 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 802eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):bh_handler(%s) exit\n", 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 808eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty) 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("bh_transmit() entry on %s\n", info->device_name); 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 813b963a8441cb95999c97bea379607071a869c65f0Jiri Slaby if (tty) 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 817cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void bh_status(MGSLPC_INFO *info) 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->ri_chkcount = 0; 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dsr_chkcount = 0; 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dcd_chkcount = 0; 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->cts_chkcount = 0; 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 825d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik/* eom: non-zero = end of frame */ 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void rx_ready_hdlc(MGSLPC_INFO *info, int eom) 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char data[2]; 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char fifo_count, read_count, i; 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds RXBUF *buf = (RXBUF*)(info->rx_buf + (info->rx_put * info->rx_buf_size)); 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_ready_hdlc(eom=%d)\n",__FILE__,__LINE__,eom); 834d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->rx_enabled) 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_frame_count >= info->rx_buf_count) { 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no more free buffers */ 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXRESET); 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_RECEIVE; 8420fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_overflow = true; 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.buf_overrun++; 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (eom) { 848d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* end of frame, get FIFO count from RBCL register */ 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f))) 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 853d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (fifo_count == 1) { 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_count = 1; 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[0] = read_reg(info, CHA + RXFIFO); 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_count = 2; 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *((unsigned short *) data) = read_reg16(info, CHA + RXFIFO); 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count -= read_count; 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!fifo_count && eom) 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->status = data[--read_count]; 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < read_count; i++) { 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (buf->count >= info->max_frame_size) { 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* frame too large, reset receiver and reset current buffer */ 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXRESET); 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->count = 0; 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *(buf->data + buf->count) = data[i]; 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->count++; 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (fifo_count); 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (eom) { 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_RECEIVE; 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_frame_count++; 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_put++; 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_put >= info->rx_buf_count) 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_put = 0; 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXFIFO); 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 888eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void rx_ready_async(MGSLPC_INFO *info, int tcd, struct tty_struct *tty) 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 89033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox unsigned char data, status, flag; 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int fifo_count; 89233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox int work = 0; 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount *icount = &info->icount; 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tcd) { 896d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* early termination, get FIFO count from RBCL register */ 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f); 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Zero fifo count could mean 0 or 32 bytes available. 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If BIT5 of STAR is set then at least 1 byte is available. 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!fifo_count && (read_reg(info,CHA+STAR) & BIT5)) 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count = 32; 90633f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox 90733f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox tty_buffer_request_room(tty, fifo_count); 908d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* Flush received async data to receive data buffer. */ 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (fifo_count) { 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data = read_reg(info, CHA + RXFIFO); 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = read_reg(info, CHA + RXFIFO); 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count -= 2; 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->rx++; 91533f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox flag = TTY_NORMAL; 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // if no frameing/crc error then save data 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // BIT7:parity error 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // BIT6:framing error 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & (BIT7 + BIT6)) { 922d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (status & BIT7) 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->parity++; 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->frame++; 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* discard char if tty control flags say so */ 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & info->ignore_status_mask) 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 930d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status &= info->read_status_mask; 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & BIT7) 93433f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox flag = TTY_PARITY; 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (status & BIT6) 93633f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox flag = TTY_FRAME; 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 93833f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox work += tty_insert_flip_char(tty, data, flag); 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXFIFO); 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) { 94333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox printk("%s(%d):rx_ready_async", 94433f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox __FILE__,__LINE__); 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx=%d brk=%d parity=%d frame=%d overrun=%d\n", 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,icount->rx,icount->brk, 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds icount->parity,icount->frame,icount->overrun); 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 949d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 95033f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox if (work) 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flip_buffer_push(tty); 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 955eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void tx_done(MGSLPC_INFO *info, struct tty_struct *tty) 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 959d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 9600fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 9610fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_aborting = false; 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 967d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik del_timer(&info->tx_timer); 968d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->drop_rts_on_tx_done) { 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) { 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~SerialSignal_RTS; 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9750fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->drop_rts_on_tx_done = false; 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 978af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_tx_done(info); 981d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik else 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 984eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty->stopped || tty->hw_stopped) { 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_TRANSMIT; 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 992eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void tx_ready(MGSLPC_INFO *info, struct tty_struct *tty) 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char fifo_count = 32; 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int c; 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):tx_ready(%s)\n", __FILE__,__LINE__,info->device_name); 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1004eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty->stopped || tty->hw_stopped) { 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_count) 10090fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_count) 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (info->tx_count && fifo_count) { 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = min(2, min_t(int, fifo_count, min(info->tx_count, TXBUFSIZE - info->tx_get))); 1017d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c == 1) { 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + TXFIFO, *(info->tx_buf + info->tx_get)); 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg16(info, CHA + TXFIFO, 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *((unsigned short*)(info->tx_buf + info->tx_get))); 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count -= c; 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_get = (info->tx_get + c) & (TXBUFSIZE - 1); 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fifo_count -= c; 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) { 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count < WAKEUP_CHARS) 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_TRANSMIT; 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXFIFO); 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count) 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXFIFO); 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXFIFO + CMD_TXEOM); 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1041eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void cts_change(MGSLPC_INFO *info, struct tty_struct *tty) 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, IRQ_CTS); 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.cts++; 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_CTS) 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.cts_up++; 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.cts_down++; 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1054eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.flags & ASYNC_CTS_FLOW) { 1055eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty->hw_stopped) { 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_CTS) { 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("CTS tx start..."); 1059eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty) 1060eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty->hw_stopped = 0; 1061eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_TRANSMIT; 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->serial_signals & SerialSignal_CTS)) { 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("CTS tx stop..."); 1069eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty) 1070eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty->hw_stopped = 1; 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1078eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void dcd_change(MGSLPC_INFO *info, struct tty_struct *tty) 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, IRQ_DCD); 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.dcd++; 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DCD) { 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dcd_up++; 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dcd_down++; 1089af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 1090fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa if (info->netcount) { 1091fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa if (info->serial_signals & SerialSignal_DCD) 1092fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_on(info->netdev); 1093fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa else 1094fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_off(info->netdev); 1095fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa } 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1100eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.flags & ASYNC_CHECK_CD) { 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s CD now %s...", info->device_name, 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (info->serial_signals & SerialSignal_DCD) ? "on" : "off"); 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DCD) 1105eeb4613436f0f19a38f667ea3078821040559c68Alan Cox wake_up_interruptible(&info->port.open_wait); 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("doing serial hangup..."); 1109eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty) 1110eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_hangup(tty); 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dsr_change(MGSLPC_INFO *info) 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->dsr_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, PVR_DSR); 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.dsr++; 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DSR) 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dsr_up++; 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.dsr_down++; 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void ri_change(MGSLPC_INFO *info) 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->ri_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, PVR_RI); 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rng++; 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RI) 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.ri_up++; 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->input_signal_events.ri_down++; 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh |= BH_STATUS; 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Interrupt service routine entry point. 1147d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 1149d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * irq interrupt number that caused interrupt 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev_id device ID supplied during interrupt registration 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1153a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzikstatic irqreturn_t mgslpc_isr(int dummy, void *dev_id) 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1155a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzik MGSLPC_INFO *info = dev_id; 1156eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty; 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short isr; 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char gis, pis; 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count=0; 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1161d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (debug_level >= DEBUG_LEVEL_ISR) 1162a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzik printk("mgslpc_isr(%d) entry.\n", info->irq_level); 1163d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1164e2d4096365e06b9a3799afbadc28b4519c0b3526Dominik Brodowski if (!(info->p_dev->_locked)) 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_HANDLED; 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1167eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty = tty_port_tty_get(&info->port); 1168eeb4613436f0f19a38f667ea3078821040559c68Alan Cox 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock(&info->lock); 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while ((gis = read_reg(info, CHA + GIS))) { 1172d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (debug_level >= DEBUG_LEVEL_ISR) 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("mgslpc_isr %s gis=%04X\n", info->device_name,gis); 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((gis & 0x70) || count > 1000) { 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("synclink_cs:hardware failed or ejected\n"); 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count++; 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gis & (BIT1 + BIT0)) { 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds isr = read_reg16(info, CHB + ISR); 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_DCD) 1184eeb4613436f0f19a38f667ea3078821040559c68Alan Cox dcd_change(info, tty); 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_CTS) 1186eeb4613436f0f19a38f667ea3078821040559c68Alan Cox cts_change(info, tty); 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gis & (BIT3 + BIT2)) 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds isr = read_reg16(info, CHA + ISR); 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_TIMER) { 11920fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->irq_occurred = true; 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, IRQ_TIMER); 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1196d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* receive IRQs */ 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_EXITHUNT) { 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.exithunt++; 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_BREAK_ON) { 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.brk++; 1203eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.flags & ASYNC_SAK) 1204eeb4613436f0f19a38f667ea3078821040559c68Alan Cox do_SAK(tty); 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_RXTIME) { 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_RXFIFO_READ); 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & (IRQ_RXEOM + IRQ_RXFIFO)) { 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) 1211d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik rx_ready_hdlc(info, isr & IRQ_RXEOM); 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 1213eeb4613436f0f19a38f667ea3078821040559c68Alan Cox rx_ready_async(info, isr & IRQ_RXEOM, tty); 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1216d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* transmit IRQs */ 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isr & IRQ_UNDERRUN) { 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_aborting) 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txabort++; 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txunder++; 1222eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_done(info, tty); 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (isr & IRQ_ALLSENT) { 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txok++; 1226eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_done(info, tty); 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (isr & IRQ_TXFIFO) 1229eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_ready(info, tty); 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gis & BIT7) { 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pis = read_reg(info, CHA + PIS); 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (pis & BIT1) 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsr_change(info); 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (pis & BIT2) 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ri_change(info); 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1239d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1240d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* Request bottom half processing if there's something 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for it to do and the bh is not already running 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->pending_bh && !info->bh_running && !info->bh_requested) { 1245d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if ( debug_level >= DEBUG_LEVEL_ISR ) 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):%s queueing bh task.\n", 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule_work(&info->task); 12490fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->bh_requested = true; 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock(&info->lock); 1253eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 1254d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1255d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (debug_level >= DEBUG_LEVEL_ISR) 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_isr(%d)exit.\n", 1257a6f97b293b08877d945ea3f28926aa446dd7ca2eJeff Garzik __FILE__, __LINE__, info->irq_level); 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_HANDLED; 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Initialize and start device. 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1264eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int startup(MGSLPC_INFO * info, struct tty_struct *tty) 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = 0; 1267d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):startup(%s)\n",__FILE__,__LINE__,info->device_name); 1270d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1271eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.flags & ASYNC_INITIALIZED) 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1273d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_buf) { 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate a page of memory for a transmit buffer */ 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL); 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_buf) { 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR"%s(%d):%s can't allocate transmit buffer\n", 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh = 0; 1285d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1286a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum memset(&info->icount, 0, sizeof(info->icount)); 1287a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum 128840565f1962c5be9b9e285e05af01ab7771534868Jiri Slaby setup_timer(&info->tx_timer, tx_timeout, (unsigned long)info); 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Allocate and claim adapter resources */ 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = claim_resources(info); 1292d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 129325985edcedea6396277003854657b5f3cb31a628Lucas De Marchi /* perform existence check and diagnostics */ 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( !retval ) 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = adapter_test(info); 1296d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( retval ) { 1298eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (capable(CAP_SYS_ADMIN) && tty) 1299eeb4613436f0f19a38f667ea3078821040559c68Alan Cox set_bit(TTY_IO_ERROR, &tty->flags); 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_resources(info); 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* program hardware for current parameters */ 1305eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_change_params(info, tty); 1306d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1307eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty) 1308eeb4613436f0f19a38f667ea3078821040559c68Alan Cox clear_bit(TTY_IO_ERROR, &tty->flags); 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1310eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags |= ASYNC_INITIALIZED; 1311d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Called by mgslpc_close() and mgslpc_hangup() to shutdown hardware 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1317eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void shutdown(MGSLPC_INFO * info, struct tty_struct *tty) 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1320d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1321eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (!(info->port.flags & ASYNC_INITIALIZED)) 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_shutdown(%s)\n", 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear status wait queue because status changes */ 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* can't happen after shutting down the hardware */ 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->status_event_wait_q); 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&info->event_wait_q); 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 133340565f1962c5be9b9e285e05af01ab7771534868Jiri Slaby del_timer_sync(&info->tx_timer); 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_buf) { 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_page((unsigned long) info->tx_buf); 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_buf = NULL; 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_stop(info); 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* TODO:disable interrupts instead of reset to preserve signal states */ 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 1347d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1348eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (!tty || tty->termios->c_cflag & HUPCL) { 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS); 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1352d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1355d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik release_resources(info); 1356d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1357eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty) 1358eeb4613436f0f19a38f667ea3078821040559c68Alan Cox set_bit(TTY_IO_ERROR, &tty->flags); 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1360eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags &= ~ASYNC_INITIALIZED; 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1363eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void mgslpc_program_hw(MGSLPC_INFO *info, struct tty_struct *tty) 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 1368d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_stop(info); 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 1372d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC || info->netcount) 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_mode(info); 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds async_mode(info); 1377d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 1379d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dcd_chkcount = 0; 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->cts_chkcount = 0; 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->ri_chkcount = 0; 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->dsr_chkcount = 0; 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHB, IRQ_DCD | IRQ_CTS); 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_enable(info, (unsigned char) PVR_DSR | PVR_RI); 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 1388d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1389eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->netcount || (tty && (tty->termios->c_cflag & CREAD))) 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_start(info); 1391d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Reconfigure adapter based on new parameters 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1397eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty) 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned cflag; 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int bits_per_char; 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1402eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (!tty || !tty->termios) 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1404d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_change_params(%s)\n", 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 1408d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1409eeb4613436f0f19a38f667ea3078821040559c68Alan Cox cflag = tty->termios->c_cflag; 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if B0 rate (hangup) specified then negate DTR and RTS */ 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* otherwise assert DTR and RTS */ 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CBAUD) 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); 1417d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* byte size and parity */ 1419d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cflag & CSIZE) { 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS5: info->params.data_bits = 5; break; 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS6: info->params.data_bits = 6; break; 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS7: info->params.data_bits = 7; break; 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS8: info->params.data_bits = 8; break; 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: info->params.data_bits = 7; break; 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1427d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CSTOPB) 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.stop_bits = 2; 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.stop_bits = 1; 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.parity = ASYNC_PARITY_NONE; 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & PARENB) { 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & PARODD) 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.parity = ASYNC_PARITY_ODD; 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.parity = ASYNC_PARITY_EVEN; 14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CMSPAR 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CMSPAR) 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.parity = ASYNC_PARITY_SPACE; 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* calculate number of jiffies to transmit a full 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIFO (32 bytes) at specified data rate 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1448d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik bits_per_char = info->params.data_bits + 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.stop_bits + 1; 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if port data rate is set to 460800 or less then 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * allow tty settings to override, otherwise keep the 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * current data rate. 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.data_rate <= 460800) { 1456eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->params.data_rate = tty_get_baud_rate(tty); 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1458d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( info->params.data_rate ) { 1460d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik info->timeout = (32*HZ*bits_per_char) / 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.data_rate; 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->timeout += HZ/50; /* Add .02 seconds of slop */ 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CRTSCTS) 1466eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags |= ASYNC_CTS_FLOW; 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 1468eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags &= ~ASYNC_CTS_FLOW; 1469d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CLOCAL) 1471eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags &= ~ASYNC_CHECK_CD; 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 1473eeb4613436f0f19a38f667ea3078821040559c68Alan Cox info->port.flags |= ASYNC_CHECK_CD; 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* process tty input control flags */ 1476d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->read_status_mask = 0; 1478eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (I_INPCK(tty)) 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->read_status_mask |= BIT7 | BIT6; 1480eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (I_IGNPAR(tty)) 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->ignore_status_mask |= BIT7 | BIT6; 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1483eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_program_hw(info, tty); 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Add a character to the transmit buffer 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1488d7e752e2757fba49178f4b1af4778ca64d305cbbAlan Coxstatic int mgslpc_put_char(struct tty_struct *tty, unsigned char ch) 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) { 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):mgslpc_put_char(%d) on %s\n", 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,ch,info->device_name); 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_put_char")) 1499d7e752e2757fba49178f4b1af4778ca64d305cbbAlan Cox return 0; 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1501326f28e9ec4b2619c2fd410593fc95fcb0ba6b41Eric Sesterhenn if (!info->tx_buf) 1502d7e752e2757fba49178f4b1af4778ca64d305cbbAlan Cox return 0; 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 1505d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC || !info->tx_active) { 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count < TXBUFSIZE - 1) { 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_buf[info->tx_put++] = ch; 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_put &= TXBUFSIZE-1; 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count++; 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1513d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 1515d7e752e2757fba49178f4b1af4778ca64d305cbbAlan Cox return 1; 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Enable transmitter so remaining characters in the 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * transmit buffer are sent. 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_flush_chars(struct tty_struct *tty) 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1525d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):mgslpc_flush_chars() entry on %s tx_count=%d\n", 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name,info->tx_count); 1529d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_flush_chars")) 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count <= 0 || tty->stopped || 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->hw_stopped || !info->tx_buf) 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):mgslpc_flush_chars() entry on %s starting transmitter\n", 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 1543eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Send a block of data 1548d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 1550d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty pointer to tty information structure 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * buf pointer to buffer containing send data 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * count size of send data in bytes 1554d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns: number of characters written 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_write(struct tty_struct * tty, 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const unsigned char *buf, int count) 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int c, ret = 0; 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1563d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):mgslpc_write(%s) count=%d\n", 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name,count); 1567d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write") || 1569326f28e9ec4b2619c2fd410593fc95fcb0ba6b41Eric Sesterhenn !info->tx_buf) 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count > TXBUFSIZE) { 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = -EIO; 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_active) 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (info->tx_count) 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto start; 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (;;) { 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c = min(count, 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds min(TXBUFSIZE - info->tx_count - 1, 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds TXBUFSIZE - info->tx_put)); 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c <= 0) 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1589d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(info->tx_buf + info->tx_put, buf, c); 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_put = (info->tx_put + c) & (TXBUFSIZE-1); 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count += c; 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += c; 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= c; 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret += c; 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstart: 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count && !tty->stopped && !tty->hw_stopped) { 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) 1605eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1608d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikcleanup: 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):mgslpc_write(%s) returning=%d\n", 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name,ret); 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Return the count of free bytes in transmit buffer 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_write_room(struct tty_struct *tty) 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 1621d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write_room")) 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* HDLC (frame oriented) mode */ 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_active) 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return HDLC_MAX_FRAME_SIZE; 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = TXBUFSIZE - info->tx_count - 1; 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ret < 0) 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = 0; 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1636d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_write_room(%s)=%d\n", 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, ret); 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Return the count of bytes in transmit buffer 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_chars_in_buffer(struct tty_struct *tty) 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 1649d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_chars_in_buffer(%s)\n", 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 1653d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_chars_in_buffer")) 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1656d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = info->tx_active ? info->max_frame_size : 0; 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = info->tx_count; 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_chars_in_buffer(%s)=%d\n", 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, rc); 1665d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Discard all data in the send buffer 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_flush_buffer(struct tty_struct *tty) 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1675d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_flush_buffer(%s) entry\n", 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 1679d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_flush_buffer")) 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1682d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1683d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik spin_lock_irqsave(&info->lock,flags); 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 1685d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik del_timer(&info->tx_timer); 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_interruptible(&tty->write_wait); 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(tty); 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Send a high-priority XON/XOFF character 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_send_xchar(struct tty_struct *tty, char ch) 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_send_xchar(%s,%d)\n", 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, ch ); 1702d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_send_xchar")) 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->x_char = ch; 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ch) { 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_enabled) 1710eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Signal remote device to throttle send data (our receive data) 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_throttle(struct tty_struct * tty) 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1721d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_throttle(%s) entry\n", 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_throttle")) 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1728d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (I_IXOFF(tty)) 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_send_xchar(tty, STOP_CHAR(tty)); 1731d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->termios->c_cflag & CRTSCTS) { 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~SerialSignal_RTS; 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Signal remote device to stop throttling send data (our receive data) 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_unthrottle(struct tty_struct * tty) 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1746d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_unthrottle(%s) entry\n", 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_unthrottle")) 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1753d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (I_IXOFF(tty)) { 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->x_char) 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->x_char = 0; 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_send_xchar(tty, START_CHAR(tty)); 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1760d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->termios->c_cflag & CRTSCTS) { 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS; 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* get the current serial statistics 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_stats(MGSLPC_INFO * info, struct mgsl_icount __user *user_icount) 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("get_params(%s)\n", info->device_name); 1776a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum if (!user_icount) { 1777a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum memset(&info->icount, 0, sizeof(info->icount)); 1778a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum } else { 1779a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum COPY_TO_USER(err, user_icount, &info->icount, sizeof(struct mgsl_icount)); 1780a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum if (err) 1781a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum return -EFAULT; 1782a7482a2e7775d163aecd8c95af7bb1b8c83890ccPaul Fulghum } 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* get the current serial parameters 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_params(MGSLPC_INFO * info, MGSL_PARAMS __user *user_params) 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("get_params(%s)\n", info->device_name); 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COPY_TO_USER(err,user_params, &info->params, sizeof(MGSL_PARAMS)); 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* set the serial parameters 1800d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 1802d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance data 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * new_params user buffer containing new serial params 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns: 0 if success, otherwise error code 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1808eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params, struct tty_struct *tty) 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSL_PARAMS tmp_params; 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 1813d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):set_params %s\n", __FILE__,__LINE__, 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name ); 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COPY_FROM_USER(err,&tmp_params, new_params, sizeof(MGSL_PARAMS)); 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) { 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( debug_level >= DEBUG_LEVEL_INFO ) 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):set_params(%s) user buffer copy failed\n", 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1824d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS)); 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 1828d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 1829eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_change_params(info, tty); 1830d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_txidle(MGSLPC_INFO * info, int __user *idle_mode) 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("get_txidle(%s)=%d\n", info->device_name, info->idle_mode); 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COPY_TO_USER(err,idle_mode, &info->idle_mode, sizeof(int)); 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_txidle(MGSLPC_INFO * info, int idle_mode) 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("set_txidle(%s,%d)\n", info->device_name, idle_mode); 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->idle_mode = idle_mode; 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_set_idle(info); 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int get_interface(MGSLPC_INFO * info, int __user *if_mode) 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("get_interface(%s)=%d\n", info->device_name, info->if_mode); 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COPY_TO_USER(err,if_mode, &info->if_mode, sizeof(int)); 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_interface(MGSLPC_INFO * info, int if_mode) 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("set_interface(%s,%d)\n", info->device_name, if_mode); 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->if_mode = if_mode; 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, PVR) & 0x0f; 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->if_mode) 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_INTERFACE_RS232: val |= PVR_RS232; break; 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_INTERFACE_V35: val |= PVR_V35; break; 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_INTERFACE_RS422: val |= PVR_RS422; break; 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, PVR, val); 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1890eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int set_txenable(MGSLPC_INFO * info, int enable, struct tty_struct *tty) 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1893d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("set_txenable(%s,%d)\n", info->device_name, enable); 1896d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (enable) { 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_enabled) 1900eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_enabled) 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int tx_abort(MGSLPC_INFO * info) 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1912d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("tx_abort(%s)\n", info->device_name); 1915d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_active && info->tx_count && 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.mode == MGSL_MODE_HDLC) { 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear data count so FIFO is not filled on next IRQ. 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This results in underrun and abort transmission. 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 19230fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_aborting = true; 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int set_rxenable(MGSLPC_INFO * info, int enable) 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1932d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("set_rxenable(%s,%d)\n", info->device_name, enable); 1935d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (enable) { 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->rx_enabled) 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_start(info); 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_enabled) 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_stop(info); 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* wait for specified event to occur 1949d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: info pointer to device instance data 19511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * mask pointer to bitmask of events to wait for 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Return Value: 0 if successful and bit mask updated with 19531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of events triggerred, 19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * otherwise error code 19551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int wait_events(MGSLPC_INFO * info, int __user *mask_ptr) 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int s; 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc=0; 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount cprev, cnow; 19621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int events; 19631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int mask; 19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct _input_signal_events oldsigs, newsigs; 19651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DECLARE_WAITQUEUE(wait, current); 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds COPY_FROM_USER(rc,&mask, mask_ptr, sizeof(int)); 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rc) 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 1970d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("wait_events(%s,%d)\n", info->device_name, mask); 19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return immediately if state matches requested events */ 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s = info->serial_signals; 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds events = mask & 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ( ((s & SerialSignal_DSR) ? MgslEvent_DsrActive:MgslEvent_DsrInactive) + 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) + 19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) + 19831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) ); 19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (events) { 19851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 19871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save current irq counts */ 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cprev = info->icount; 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oldsigs = info->input_signal_events; 1992d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->params.mode == MGSL_MODE_HDLC) && 19941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (mask & MgslEvent_ExitHuntMode)) 19951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, IRQ_EXITHUNT); 1996d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 19971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 19981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_wait_queue(&info->event_wait_q, &wait); 1999d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 2001d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2002d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(;;) { 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule(); 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) { 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -ERESTARTSYS; 20071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2009d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get current irq counts */ 20111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 20121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow = info->icount; 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs = info->input_signal_events; 20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 20151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if no change, wait aborted for some reason */ 20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (newsigs.dsr_up == oldsigs.dsr_up && 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.dsr_down == oldsigs.dsr_down && 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.dcd_up == oldsigs.dcd_up && 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.dcd_down == oldsigs.dcd_down && 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.cts_up == oldsigs.cts_up && 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.cts_down == oldsigs.cts_down && 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.ri_up == oldsigs.ri_up && 20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newsigs.ri_down == oldsigs.ri_down && 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow.exithunt == cprev.exithunt && 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow.rxidle == cprev.rxidle) { 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -EIO; 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds events = mask & 20331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ( (newsigs.dsr_up != oldsigs.dsr_up ? MgslEvent_DsrActive:0) + 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.dsr_down != oldsigs.dsr_down ? MgslEvent_DsrInactive:0) + 20351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.dcd_up != oldsigs.dcd_up ? MgslEvent_DcdActive:0) + 20361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.dcd_down != oldsigs.dcd_down ? MgslEvent_DcdInactive:0) + 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.cts_up != oldsigs.cts_up ? MgslEvent_CtsActive:0) + 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.cts_down != oldsigs.cts_down ? MgslEvent_CtsInactive:0) + 20391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.ri_up != oldsigs.ri_up ? MgslEvent_RiActive:0) + 20401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (newsigs.ri_down != oldsigs.ri_down ? MgslEvent_RiInactive:0) + 20411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (cnow.exithunt != cprev.exithunt ? MgslEvent_ExitHuntMode:0) + 20421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (cnow.rxidle != cprev.rxidle ? MgslEvent_IdleReceived:0) ); 20431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (events) 20441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2045d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cprev = cnow; 20471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oldsigs = newsigs; 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2049d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_wait_queue(&info->event_wait_q, &wait); 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_RUNNING); 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mask & MgslEvent_ExitHuntMode) { 20541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 20551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!waitqueue_active(&info->event_wait_q)) 20561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, IRQ_EXITHUNT); 20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rc == 0) 20611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PUT_USER(rc, events, mask_ptr); 20621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int modem_input_wait(MGSLPC_INFO *info,int arg) 20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct mgsl_icount cprev, cnow; 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DECLARE_WAITQUEUE(wait, current); 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save current irq counts */ 20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cprev = info->icount; 20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_wait_queue(&info->status_event_wait_q, &wait); 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(;;) { 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule(); 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) { 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -ERESTARTSYS; 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get new irq counts */ 20871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 20881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow = info->icount; 20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 20901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if no change, wait aborted for some reason */ 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { 20951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -EIO; 20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check for change in caller specified modem input */ 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((arg & TIOCM_RNG && cnow.rng != cprev.rng) || 21011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (arg & TIOCM_DSR && cnow.dsr != cprev.dsr) || 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (arg & TIOCM_CD && cnow.dcd != cprev.dcd) || 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (arg & TIOCM_CTS && cnow.cts != cprev.cts)) { 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = 0; 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cprev = cnow; 21091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_wait_queue(&info->status_event_wait_q, &wait); 21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_current_state(TASK_RUNNING); 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* return the state of the serial control and status signals 21161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 211760b33c133ca0b7c0b6072c87234b63fee6e80558Alan Coxstatic int tiocmget(struct tty_struct *tty) 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 21201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int result; 21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 21241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 21261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS:0) + 21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR:0) + 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((info->serial_signals & SerialSignal_DCD) ? TIOCM_CAR:0) + 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((info->serial_signals & SerialSignal_RI) ? TIOCM_RNG:0) + 21311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((info->serial_signals & SerialSignal_DSR) ? TIOCM_DSR:0) + 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((info->serial_signals & SerialSignal_CTS) ? TIOCM_CTS:0); 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):%s tiocmget() value=%08X\n", 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, result ); 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return result; 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* set modem control signals (DTR/RTS) 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 214220b9d17715017ae4dd4ec87fabc36d33b9de708eAlan Coxstatic int tiocmset(struct tty_struct *tty, 21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear) 21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 21471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):%s tiocmset(%x,%x)\n", 21501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name, set, clear); 21511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS; 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DTR; 21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~SerialSignal_RTS; 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 21591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~SerialSignal_DTR; 21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set or clear transmit break condition 21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: tty pointer to tty instance data 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * break_state -1=set break condition, 0=clear 21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 21739e98966c7bb94355689478bc84cc3e0c190f977eAlan Coxstatic int mgslpc_break(struct tty_struct *tty, int break_state) 21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 21761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 2177d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 21781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 21791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_break(%s,%d)\n", 21801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, break_state); 2181d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 21821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_break")) 21839e98966c7bb94355689478bc84cc3e0c190f977eAlan Cox return -EINVAL; 21841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 21861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (break_state == -1) 21871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA+DAFO, BIT6); 2188d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik else 21891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA+DAFO, BIT6); 21901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 21919e98966c7bb94355689478bc84cc3e0c190f977eAlan Cox return 0; 21921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21940587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Coxstatic int mgslpc_get_icount(struct tty_struct *tty, 21950587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox struct serial_icounter_struct *icount) 21960587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox{ 21970587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 21980587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox struct mgsl_icount cnow; /* kernel counter temps */ 21990587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox unsigned long flags; 22000587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox 22010587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox spin_lock_irqsave(&info->lock,flags); 22020587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox cnow = info->icount; 22030587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox spin_unlock_irqrestore(&info->lock,flags); 22040587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox 22050587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->cts = cnow.cts; 22060587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->dsr = cnow.dsr; 22070587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->rng = cnow.rng; 22080587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->dcd = cnow.dcd; 22090587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->rx = cnow.rx; 22100587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->tx = cnow.tx; 22110587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->frame = cnow.frame; 22120587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->overrun = cnow.overrun; 22130587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->parity = cnow.parity; 22140587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->brk = cnow.brk; 22150587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox icount->buf_overrun = cnow.buf_overrun; 22160587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox 22170587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox return 0; 22180587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox} 22190587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox 22201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Service an IOCTL request 2221d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 22221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 2223d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 22241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty pointer to tty instance data 22251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * cmd IOCTL command code 22261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * arg command argument/context 2227d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 22281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Return Value: 0 if success, otherwise error code 22291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2230751b3840d216f1ecd3b91ff5251bf7703b690cd8Axel Linstatic int mgslpc_ioctl(struct tty_struct *tty, 22311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int cmd, unsigned long arg) 22321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 2234eeb4613436f0f19a38f667ea3078821040559c68Alan Cox void __user *argp = (void __user *)arg; 2235d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 22371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_ioctl %s cmd=%08X\n", __FILE__,__LINE__, 22381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name, cmd ); 2239d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_ioctl")) 22411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 22421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && 22440587102cf9f427c185bfdeb2cef41e13ee0264b1Alan Cox (cmd != TIOCMIWAIT)) { 22451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty->flags & (1 << TTY_IO_ERROR)) 22461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EIO; 22471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cmd) { 22501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGPARAMS: 22511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_params(info, argp); 22521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCSPARAMS: 2253eeb4613436f0f19a38f667ea3078821040559c68Alan Cox return set_params(info, argp, tty); 22541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGTXIDLE: 22551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_txidle(info, argp); 22561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCSTXIDLE: 22571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_txidle(info, (int)arg); 22581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGIF: 22591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_interface(info, argp); 22601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCSIF: 22611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_interface(info,(int)arg); 22621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCTXENABLE: 2263eeb4613436f0f19a38f667ea3078821040559c68Alan Cox return set_txenable(info,(int)arg, tty); 22641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCRXENABLE: 22651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return set_rxenable(info,(int)arg); 22661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCTXABORT: 22671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tx_abort(info); 22681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCGSTATS: 22691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return get_stats(info, argp); 22701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MGSL_IOCWAITEVENT: 22711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return wait_events(info, argp); 22721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCMIWAIT: 22731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return modem_input_wait(info,(int)arg); 22741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 22751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOIOCTLCMD; 22761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 22781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set new termios settings 2281d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 22821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: 2283d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 22841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tty pointer to tty structure 22851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * termios pointer to buffer to hold returned old termios 22861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2287606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Coxstatic void mgslpc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) 22881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; 22901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 2291d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 22931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_set_termios %s\n", __FILE__,__LINE__, 22941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver->name ); 2295d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 22961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just return if nothing has changed */ 22971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((tty->termios->c_cflag == old_termios->c_cflag) 2298d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik && (RELEVANT_IFLAG(tty->termios->c_iflag) 22991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == RELEVANT_IFLAG(old_termios->c_iflag))) 23001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 23011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2302eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_change_params(info, tty); 23031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Handle transition to B0 status */ 23051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (old_termios->c_cflag & CBAUD && 23061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !(tty->termios->c_cflag & CBAUD)) { 23071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); 23081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 23091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 23101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 23111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2312d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Handle transition away from B0 status */ 23141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(old_termios->c_cflag & CBAUD) && 23151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->termios->c_cflag & CBAUD) { 23161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DTR; 2317d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik if (!(tty->termios->c_cflag & CRTSCTS) || 23181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !test_bit(TTY_THROTTLED, &tty->flags)) { 23191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS; 23201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 23221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 23231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 23241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2325d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Handle turning off CRTSCTS */ 23271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (old_termios->c_cflag & CRTSCTS && 23281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !(tty->termios->c_cflag & CRTSCTS)) { 23291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->hw_stopped = 0; 23301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_release(tty); 23311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_close(struct tty_struct *tty, struct file * filp) 23351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 23361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 2337eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_port *port = &info->port; 23381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_close")) 23401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 2341d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 23431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_close(%s) entry, count=%d\n", 2344eeb4613436f0f19a38f667ea3078821040559c68Alan Cox __FILE__,__LINE__, info->device_name, port->count); 23451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2346eeb4613436f0f19a38f667ea3078821040559c68Alan Cox WARN_ON(!port->count); 2347d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2348eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty_port_close_start(port, tty, filp) == 0) 23491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 2350d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2351eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (port->flags & ASYNC_INITIALIZED) 23521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_wait_until_sent(tty, info->timeout); 23531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2354978e595f88a1fba5869aa42a4af4fba36f33ecacAlan Cox mgslpc_flush_buffer(tty); 23551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2356978e595f88a1fba5869aa42a4af4fba36f33ecacAlan Cox tty_ldisc_flush(tty); 2357eeb4613436f0f19a38f667ea3078821040559c68Alan Cox shutdown(info, tty); 2358eeb4613436f0f19a38f667ea3078821040559c68Alan Cox 2359eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_port_close_end(port, tty); 2360eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_port_tty_set(port, NULL); 2361d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikcleanup: 23621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 23631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__,__LINE__, 2364eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty->driver->name, port->count); 23651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Wait until the transmitter is empty. 23681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 23691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout) 23701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 23711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 23721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long orig_jiffies, char_time; 23731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info ) 23751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 23761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 23781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_wait_until_sent(%s) entry\n", 23791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 2380d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_wait_until_sent")) 23821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 23831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2384eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (!(info->port.flags & ASYNC_INITIALIZED)) 23851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 2386d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds orig_jiffies = jiffies; 2388d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Set check interval to 1/5 of estimated time to 23901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * send a character, and make it at least 1. The check 23911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interval should also be less than the timeout. 23921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: use tight timings here to satisfy the NIST-PCTS. 2393d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 2394d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 23951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( info->params.data_rate ) { 23961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time = info->timeout/(32 * 5); 23971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!char_time) 23981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time++; 23991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 24001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time = 1; 2401d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout) 24031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char_time = min_t(unsigned long, char_time, timeout); 2404d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 24061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (info->tx_active) { 24071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(jiffies_to_msecs(char_time)); 24081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) 24091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout && time_after(jiffies, orig_jiffies + timeout)) 24111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 24141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while ((info->tx_count || info->tx_active) && 24151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_enabled) { 24161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(jiffies_to_msecs(char_time)); 24171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) 24181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout && time_after(jiffies, orig_jiffies + timeout)) 24201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2423d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 24251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 24261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_wait_until_sent(%s) exit\n", 24271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 24281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Called by tty_hangup() when a hangup is signaled. 24311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the same as closing all open files for the port. 24321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 24331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_hangup(struct tty_struct *tty) 24341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; 2436d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 24381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_hangup(%s)\n", 24391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 2440d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 24411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_hangup")) 24421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 24431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_flush_buffer(tty); 2445eeb4613436f0f19a38f667ea3078821040559c68Alan Cox shutdown(info, tty); 2446eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_port_hangup(&info->port); 24471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2449eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic int carrier_raised(struct tty_port *port) 24501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2451eeb4613436f0f19a38f667ea3078821040559c68Alan Cox MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port); 2452eeb4613436f0f19a38f667ea3078821040559c68Alan Cox unsigned long flags; 2453d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2454eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_lock_irqsave(&info->lock,flags); 2455eeb4613436f0f19a38f667ea3078821040559c68Alan Cox get_signals(info); 2456eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_unlock_irqrestore(&info->lock,flags); 2457d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2458eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->serial_signals & SerialSignal_DCD) 2459eeb4613436f0f19a38f667ea3078821040559c68Alan Cox return 1; 2460eeb4613436f0f19a38f667ea3078821040559c68Alan Cox return 0; 2461eeb4613436f0f19a38f667ea3078821040559c68Alan Cox} 2462d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2463fcc8ac1825d3d0fb81f73bc1a80ebc863168bb56Alan Coxstatic void dtr_rts(struct tty_port *port, int onoff) 2464eeb4613436f0f19a38f667ea3078821040559c68Alan Cox{ 2465eeb4613436f0f19a38f667ea3078821040559c68Alan Cox MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port); 2466eeb4613436f0f19a38f667ea3078821040559c68Alan Cox unsigned long flags; 2467d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2468eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_lock_irqsave(&info->lock,flags); 2469fcc8ac1825d3d0fb81f73bc1a80ebc863168bb56Alan Cox if (onoff) 2470fcc8ac1825d3d0fb81f73bc1a80ebc863168bb56Alan Cox info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; 2471fcc8ac1825d3d0fb81f73bc1a80ebc863168bb56Alan Cox else 2472fcc8ac1825d3d0fb81f73bc1a80ebc863168bb56Alan Cox info->serial_signals &= ~SerialSignal_RTS + SerialSignal_DTR; 2473eeb4613436f0f19a38f667ea3078821040559c68Alan Cox set_signals(info); 2474eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_unlock_irqrestore(&info->lock,flags); 24751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2477eeb4613436f0f19a38f667ea3078821040559c68Alan Cox 24781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int mgslpc_open(struct tty_struct *tty, struct file * filp) 24791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info; 2481eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_port *port; 24821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval, line; 24831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 24841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2485d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* verify range of specified line number */ 24861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds line = tty->index; 24871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((line < 0) || (line >= mgslpc_device_count)) { 24881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_open with invalid line #%d.\n", 24891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,line); 24901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 24911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* find the info structure for the specified line */ 24941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = mgslpc_device_list; 24951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(info && info->line != line) 24961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = info->next_device; 24971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mgslpc_paranoia_check(info, tty->name, "mgslpc_open")) 24981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2499d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2500eeb4613436f0f19a38f667ea3078821040559c68Alan Cox port = &info->port; 25011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = info; 2502eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_port_tty_set(port, tty); 2503d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 25051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_open(%s), old ref count = %d\n", 2506eeb4613436f0f19a38f667ea3078821040559c68Alan Cox __FILE__,__LINE__,tty->driver->name, port->count); 25071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If port is closing, signal caller to try again */ 2509eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING){ 2510eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (port->flags & ASYNC_CLOSING) 2511eeb4613436f0f19a38f667ea3078821040559c68Alan Cox interruptible_sleep_on(&port->close_wait); 2512eeb4613436f0f19a38f667ea3078821040559c68Alan Cox retval = ((port->flags & ASYNC_HUP_NOTIFY) ? 25131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -EAGAIN : -ERESTARTSYS); 25141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 25151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2516d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2517eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0; 25181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 25201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) { 25211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EBUSY; 25221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 25231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 25241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2525eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_lock(&port->lock); 2526eeb4613436f0f19a38f667ea3078821040559c68Alan Cox port->count++; 2527eeb4613436f0f19a38f667ea3078821040559c68Alan Cox spin_unlock(&port->lock); 25281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 25291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2530eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (port->count == 1) { 25311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1st open on this device, init hardware */ 2532eeb4613436f0f19a38f667ea3078821040559c68Alan Cox retval = startup(info, tty); 25331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval < 0) 25341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 25351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2537eeb4613436f0f19a38f667ea3078821040559c68Alan Cox retval = tty_port_block_til_ready(&info->port, tty, filp); 25381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) { 25391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 25401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):block_til_ready(%s) returned %d\n", 25411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name, retval); 25421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 25431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 25461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):mgslpc_open(%s) success\n", 25471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name); 25481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 2549d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2550d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikcleanup: 25511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 25521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 25551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * /proc fs routines.... 25561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 25571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 255887687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyanstatic inline void line_info(struct seq_file *m, MGSLPC_INFO *info) 25591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 25601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char stat_buf[30]; 25611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 25621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 256387687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, "%s:io:%04X irq:%d", 25641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name, info->io_base, info->irq_level); 25651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* output current serial signal states */ 25671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 25681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 25691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 2570d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 25711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds stat_buf[0] = 0; 25721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds stat_buf[1] = 0; 25731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 25741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|RTS"); 25751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_CTS) 25761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|CTS"); 25771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DTR) 25781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|DTR"); 25791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DSR) 25801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|DSR"); 25811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DCD) 25821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|CD"); 25831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RI) 25841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(stat_buf, "|RI"); 25851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC) { 258787687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " HDLC txok:%d rxok:%d", 25881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txok, info->icount.rxok); 25891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.txunder) 259087687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " txunder:%d", info->icount.txunder); 25911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.txabort) 259287687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " txabort:%d", info->icount.txabort); 25931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxshort) 259487687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " rxshort:%d", info->icount.rxshort); 25951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxlong) 259687687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " rxlong:%d", info->icount.rxlong); 25971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxover) 259887687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " rxover:%d", info->icount.rxover); 25991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.rxcrc) 260087687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " rxcrc:%d", info->icount.rxcrc); 26011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 260287687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " ASYNC tx:%d rx:%d", 26031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.tx, info->icount.rx); 26041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.frame) 260587687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " fe:%d", info->icount.frame); 26061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.parity) 260787687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " pe:%d", info->icount.parity); 26081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.brk) 260987687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " brk:%d", info->icount.brk); 26101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->icount.overrun) 261187687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " oe:%d", info->icount.overrun); 26121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2613d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Append serial signal status to end */ 261587687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, " %s\n", stat_buf+1); 2616d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 261787687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, "txactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", 26181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_active,info->bh_requested,info->bh_running, 26191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->pending_bh); 26201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Called to print information about devices 26231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 262487687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyanstatic int mgslpc_proc_show(struct seq_file *m, void *v) 26251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 26261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info; 2627d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 262887687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan seq_printf(m, "synclink driver:%s\n", driver_version); 2629d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 26301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = mgslpc_device_list; 26311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while( info ) { 263287687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan line_info(m, info); 26331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = info->next_device; 26341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 263587687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan return 0; 263687687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan} 26371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 263887687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyanstatic int mgslpc_proc_open(struct inode *inode, struct file *file) 263987687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan{ 264087687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan return single_open(file, mgslpc_proc_show, NULL); 26411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 264387687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyanstatic const struct file_operations mgslpc_proc_fops = { 264487687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan .owner = THIS_MODULE, 264587687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan .open = mgslpc_proc_open, 264687687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan .read = seq_read, 264787687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan .llseek = seq_lseek, 264887687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan .release = single_release, 264987687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan}; 265087687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan 2651cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic int rx_alloc_buffers(MGSLPC_INFO *info) 26521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 26531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* each buffer has header and data */ 26541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_size = sizeof(RXBUF) + info->max_frame_size; 26551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* calculate total allocation size for 8 buffers */ 26571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_total_size = info->rx_buf_size * 8; 26581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* limit total allocated memory */ 26601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_buf_total_size > 0x10000) 26611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_total_size = 0x10000; 26621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* calculate number of buffers */ 26641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf_count = info->rx_buf_total_size / info->rx_buf_size; 26651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf = kmalloc(info->rx_buf_total_size, GFP_KERNEL); 26671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_buf == NULL) 26681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 26691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_reset_buffers(info); 26711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 26721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2674cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_free_buffers(MGSLPC_INFO *info) 26751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2676735d5661d5c5f023a78fbe68e771e261040ff1b7Jesper Juhl kfree(info->rx_buf); 26771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_buf = NULL; 26781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2680cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic int claim_resources(MGSLPC_INFO *info) 26811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 26821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rx_alloc_buffers(info) < 0 ) { 268325985edcedea6396277003854657b5f3cb31a628Lucas De Marchi printk( "Can't allocate rx buffer %s\n", info->device_name); 26841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_resources(info); 26851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2686d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik } 26871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 26881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2690cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void release_resources(MGSLPC_INFO *info) 26911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 26921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 26931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("release_resources(%s)\n", info->device_name); 26941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_free_buffers(info); 26951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Add the specified device instance data structure to the 26981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * global linked list of devices and increment the device count. 2699d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * 27001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Arguments: info pointer to device instance data 27011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2702cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void mgslpc_add_device(MGSLPC_INFO *info) 27031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 27041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->next_device = NULL; 27051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->line = mgslpc_device_count; 27061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sprintf(info->device_name,"ttySLP%d",info->line); 2707d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->line < MAX_DEVICE_COUNT) { 27091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maxframe[info->line]) 27101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = maxframe[info->line]; 27111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_count++; 2714d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!mgslpc_device_list) 27161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_list = info; 2717d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik else { 27181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *current_dev = mgslpc_device_list; 27191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while( current_dev->next_device ) 27201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds current_dev = current_dev->next_device; 27211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds current_dev->next_device = info; 27221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2723d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->max_frame_size < 4096) 27251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = 4096; 27261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (info->max_frame_size > 65535) 27271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->max_frame_size = 65535; 2728d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 27291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "SyncLink PC Card %s:IO=%04X IRQ=%d\n", 27301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->device_name, info->io_base, info->irq_level); 27311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2732af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 27331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_init(info); 27341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 27351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 27361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2737cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void mgslpc_remove_device(MGSLPC_INFO *remove_info) 27381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 27391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = mgslpc_device_list; 27401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *last = NULL; 27411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(info) { 27431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info == remove_info) { 27441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (last) 27451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last->next_device = info->next_device; 27461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 27471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_list = info->next_device; 2748af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 27491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_exit(info); 27501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 27511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_resources(info); 27521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(info); 27531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_device_count--; 27541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 27551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last = info; 27571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = info->next_device; 27581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 27601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 276125f8f54f6e178acfd503a95441b0ea05c525f751Joe Perchesstatic const struct pcmcia_device_id mgslpc_ids[] = { 27624af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski PCMCIA_DEVICE_MANF_CARD(0x02c5, 0x0050), 27634af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski PCMCIA_DEVICE_NULL 27644af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski}; 27654af48c8c16dfc37400f63633373dd180b5540eadDominik BrodowskiMODULE_DEVICE_TABLE(pcmcia, mgslpc_ids); 27664af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski 27671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct pcmcia_driver mgslpc_driver = { 27681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .owner = THIS_MODULE, 27692e9b981a7c63ee8278df6823f8389d69dad1a499Dominik Brodowski .name = "synclink_cs", 277015b99ac1729503db9e6dc642a50b9b6cb3bf51f9Dominik Brodowski .probe = mgslpc_probe, 2771cc3b4866bee996c922e875b8c8efe9f0d8803aaeDominik Brodowski .remove = mgslpc_detach, 27724af48c8c16dfc37400f63633373dd180b5540eadDominik Brodowski .id_table = mgslpc_ids, 277398e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski .suspend = mgslpc_suspend, 277498e4c28b7ec390c2dad6a4c69d69629c0f7e8b10Dominik Brodowski .resume = mgslpc_resume, 27751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 27761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2777b68e31d0ebbcc909d1941f9f230c9d062a3a13d3Jeff Dikestatic const struct tty_operations mgslpc_ops = { 27781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = mgslpc_open, 27791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = mgslpc_close, 27801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = mgslpc_write, 27811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .put_char = mgslpc_put_char, 27821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_chars = mgslpc_flush_chars, 27831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = mgslpc_write_room, 27841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = mgslpc_chars_in_buffer, 27851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flush_buffer = mgslpc_flush_buffer, 27861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = mgslpc_ioctl, 27871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = mgslpc_throttle, 27881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = mgslpc_unthrottle, 27891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .send_xchar = mgslpc_send_xchar, 27901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .break_ctl = mgslpc_break, 27911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .wait_until_sent = mgslpc_wait_until_sent, 27921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = mgslpc_set_termios, 27931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = tx_pause, 27941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = tx_release, 27951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hangup = mgslpc_hangup, 27961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = tiocmget, 27971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = tiocmset, 2798dc98d9650891661a20842a8eef9e76536046d897Andres Salomon .get_icount = mgslpc_get_icount, 279987687144b4fce2ad083e689eec8b219054c292aeAlexey Dobriyan .proc_fops = &mgslpc_proc_fops, 28001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 28011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void synclink_cs_cleanup(void) 28031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 28051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(mgslpc_device_list) 28071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_remove_device(mgslpc_device_list); 28081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (serial_driver) { 28101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = tty_unregister_driver(serial_driver))) 28111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d) failed to unregister tty driver err=%d\n", 28121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,rc); 28131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(serial_driver); 28141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 28151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pcmcia_unregister_driver(&mgslpc_driver); 28171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init synclink_cs_init(void) 28201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 28221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (break_on_load) { 28241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_get_text_ptr(); 28251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BREAKPOINT(); 28261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 28271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = pcmcia_register_driver(&mgslpc_driver)) < 0) 28291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 28301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver = alloc_tty_driver(MAX_DEVICE_COUNT); 28321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!serial_driver) { 28331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -ENOMEM; 28341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto error; 28351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 28361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Initialize the tty_driver structure */ 2838d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 28391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->owner = THIS_MODULE; 28401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->driver_name = "synclink_cs"; 28411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->name = "ttySLP"; 28421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->major = ttymajor; 28431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->minor_start = 64; 28441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->type = TTY_DRIVER_TYPE_SERIAL; 28451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->subtype = SERIAL_TYPE_NORMAL; 28461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->init_termios = tty_std_termios; 28471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->init_termios.c_cflag = 28481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds B9600 | CS8 | CREAD | HUPCL | CLOCAL; 28491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->flags = TTY_DRIVER_REAL_RAW; 28501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_set_operations(serial_driver, &mgslpc_ops); 28511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = tty_register_driver(serial_driver)) < 0) { 28531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):Couldn't register serial driver\n", 28541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__); 28551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(serial_driver); 28561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver = NULL; 28571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto error; 28581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2859d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 28601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s %s, tty major#%d\n", 28611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver_name, driver_version, 28621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_driver->major); 2863d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 28641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 28651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserror: 28671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds synclink_cs_cleanup(); 28681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 28691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2871d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void __exit synclink_cs_exit(void) 28721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds synclink_cs_cleanup(); 28741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(synclink_cs_init); 28771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(synclink_cs_exit); 28781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void mgslpc_set_rate(MGSLPC_INFO *info, unsigned char channel, unsigned int rate) 28801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int M, N; 28821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 28831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2884d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* note:standard BRG mode is broken in V3.2 chip 2885d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik * so enhanced mode is always used 28861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 28871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rate) { 28891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N = 3686400 / rate; 28901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!N) 28911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N = 1; 28921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N >>= 1; 28931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (M = 1; N > 64 && M < 16; M++) 28941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N >>= 1; 28951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds N--; 28961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* BGR[5..0] = N 28981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BGR[9..6] = M 28991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BGR[7..0] contained in BGR register 29001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BGR[9..8] contained in CCR2[7..6] 29011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * divisor = (N+1)*2^M 29021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: M *must* not be zero (causes asymetric duty cycle) 2904d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 29051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (unsigned char) (channel + BGR), 29061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (unsigned char) ((M << 6) + N)); 29071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, (unsigned char) (channel + CCR2)) & 0x3f; 29081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= ((M << 4) & 0xc0); 29091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, (unsigned char) (channel + CCR2), val); 29101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 29121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Enabled the AUX clock output at the specified frequency. 29141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 29151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void enable_auxclk(MGSLPC_INFO *info) 29161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 29171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 2918d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MODE 29201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 MDS[1..0] 10 = transparent HDLC mode 29221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 ADM Address Mode, 0 = no addr recognition 29231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 TMD Timer Mode, 0 = external 29241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 RAC Receiver Active, 0 = inactive 29251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RTS 0=RTS active during xmit, 1=RTS always active 29261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TRS Timer Resolution, 1=512 29271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TLP Test Loop, 0 = no loop 29281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1000 0010 2930d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 29311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x82; 2932d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 2933d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* channel B RTS is used to enable AUXCLK driver on SP505 */ 29341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed) 29351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; 29361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + MODE, val); 2937d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR0 29391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 PU Power Up, 1=active, 0=power down 29411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 MCE Master Clock Enable, 1=enabled 29421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Reserved, 0 29431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..02 SC[2..0] Encoding 29441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 SM[1..0] Serial Mode, 00=HDLC 29451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11000000 2947d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 29481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR0, 0xc0); 2949d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR1 29511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 SFLG Shared Flag, 0 = disable shared flags 29531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 GALP Go Active On Loop, 0 = not used 29541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 GLP Go On Loop, 0 = not used 29551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ODS Output Driver Select, 1=TxD is push-pull output 29561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 ITF Interframe Time Fill, 0=mark, 1=flag 29571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02..00 CM[2..0] Clock Mode 29581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 0111 2960d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 29611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR1, 0x17); 2962d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR2 (Channel B) 29641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 BGR[9..8] Baud rate bits 9..8 29661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value 29671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 SSEL Clock source select, 1=submode b 29681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 TOE 0=TxCLK is input, 1=TxCLK is output 29691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RWX Read/Write Exchange 0=disabled 29701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 C32, CRC select, 0=CRC-16, 1=CRC-32 29711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DIV, data inversion 0=disabled, 1=enabled 29721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0011 1000 2974d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 29751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed) 29761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR2, 0x38); 29771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 29781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR2, 0x30); 2979d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR4 29811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 MCK4 Master Clock Divide by 4, 1=enabled 29831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled 29841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 TST1 Test Pin, 0=normal operation 29851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ICD Ivert Carrier Detect, 1=enabled (active low) 29861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..02 Reserved, must be 0 29871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 RFT[1..0] RxFIFO Threshold 00=32 bytes 29881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 29891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 0000 2990d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 29911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR4, 0x50); 2992d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 29931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if auxclk not enabled, set internal BRG so 29941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * CTS transitions can be detected (requires TxC) 2995d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 29961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed) 29971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHB, info->params.clock_speed); 29981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 29991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHB, 921600); 30001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 30011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3002d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzikstatic void loopback_enable(MGSLPC_INFO *info) 30031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 30041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 3005d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3006d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* CCR1:02..00 CM[2..0] Clock Mode = 111 (clock mode 7) */ 30071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + CCR1) | (BIT2 + BIT1 + BIT0); 30081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR1, val); 3009d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3010d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* CCR2:04 SSEL Clock source select, 1=submode b */ 30111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + CCR2) | (BIT4 + BIT5); 30121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR2, val); 3013d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3014d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* set LinkSpeed if available, otherwise default to 2Mbps */ 30151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.clock_speed) 30161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.clock_speed); 30171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 30181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, 1843200); 3019d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3020d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:00 TLP Test Loop, 1=loopback enabled */ 30211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + MODE) | BIT0; 30221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 30231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 30241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3025cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void hdlc_mode(MGSLPC_INFO *info) 30261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 30271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 30281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char clkmode, clksubmode; 30291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3030d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* disable all interrupts */ 30311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, 0xffff); 30321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, 0xffff); 30331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, 0xff); 3034d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3035d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* assume clock mode 0a, rcv=RxC xmt=TxC */ 30361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = clksubmode = 0; 30371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_RXC_DPLL 30381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && info->params.flags & HDLC_FLAG_TXC_DPLL) { 3039d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 7a, rcv = DPLL, xmt = DPLL */ 30401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 7; 30411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->params.flags & HDLC_FLAG_RXC_BRG 30421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && info->params.flags & HDLC_FLAG_TXC_BRG) { 3043d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 7b, rcv = BRG, xmt = BRG */ 30441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 7; 30451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clksubmode = 1; 30461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->params.flags & HDLC_FLAG_RXC_DPLL) { 30471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_TXC_BRG) { 3048d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 6b, rcv = DPLL, xmt = BRG/16 */ 30491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 6; 30501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clksubmode = 1; 30511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3052d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 6a, rcv = DPLL, xmt = TxC */ 30531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clkmode = 6; 30541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 30551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (info->params.flags & HDLC_FLAG_TXC_BRG) { 3056d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* clock mode 0b, rcv = RxC, xmt = BRG */ 30571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clksubmode = 1; 30581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3059d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 30601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MODE 30611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 MDS[1..0] 10 = transparent HDLC mode 30631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 ADM Address Mode, 0 = no addr recognition 30641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 TMD Timer Mode, 0 = external 30651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 RAC Receiver Active, 0 = inactive 30661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RTS 0=RTS active during xmit, 1=RTS always active 30671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TRS Timer Resolution, 1=512 30681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TLP Test Loop, 0 = no loop 30691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1000 0010 3071d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 30721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x82; 30731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.loopback) 30741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; 3075d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3076d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* preserve RTS state */ 30771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 30781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; 30791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 3080d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 30811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR0 30821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 PU Power Up, 1=active, 0=power down 30841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 MCE Master Clock Enable, 1=enabled 30851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Reserved, 0 30861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..02 SC[2..0] Encoding 30871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 SM[1..0] Serial Mode, 00=HDLC 30881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 30891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11000000 3090d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 30911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0xc0; 30921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->params.encoding) 30931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 30941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_NRZI: 30951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT3; 30961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 30971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_BIPHASE_SPACE: 30981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4; 30991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; // FM0 31001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_BIPHASE_MARK: 31011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4 + BIT2; 31021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; // FM1 31031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_ENCODING_BIPHASE_LEVEL: 31041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4 + BIT3; 31051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; // Manchester 31061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 31071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR0, val); 3108d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR1 31101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 SFLG Shared Flag, 0 = disable shared flags 31121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 GALP Go Active On Loop, 0 = not used 31131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 GLP Go On Loop, 0 = not used 31141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ODS Output Driver Select, 1=TxD is push-pull output 31151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 ITF Interframe Time Fill, 0=mark, 1=flag 31161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02..00 CM[2..0] Clock Mode 31171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 0000 3119d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x10 + clkmode; 31211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR1, val); 3122d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR2 31241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 BGR[9..8] Baud rate bits 9..8 31261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value 31271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 SSEL Clock source select, 1=submode b 31281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 TOE 0=TxCLK is input, 0=TxCLK is input 31291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RWX Read/Write Exchange 0=disabled 31301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 C32, CRC select, 0=CRC-16, 1=CRC-32 31311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DIV, data inversion 0=disabled, 1=enabled 31321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3134d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 31361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clkmode == 2 || clkmode == 3 || clkmode == 6 31371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || clkmode == 7 || (clkmode == 0 && clksubmode == 1)) 31381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 31391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clksubmode) 31401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4; 31411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type == HDLC_CRC_32_CCITT) 31421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT1; 31431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.encoding == HDLC_ENCODING_NRZB) 31441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; 31451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR2, val); 3146d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR3 31481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 PRE[1..0] Preamble count 00=1, 01=2, 10=4, 11=8 31501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 EPT Enable preamble transmission, 1=enabled 31511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 RADD Receive address pushed to FIFO, 0=disabled 31521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 CRL CRC Reset Level, 0=FFFF 31531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RCRC Rx CRC 0=On 1=Off 31541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TCRC Tx CRC 0=On 1=Off 31551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 PSD DPLL Phase Shift Disable 31561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3158d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 31591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 31601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type == HDLC_CRC_NONE) 31611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2 + BIT1; 31621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE) 31631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 31641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->params.preamble_length) 31651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 31661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_LENGTH_16BITS: 31671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 31681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 31691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_LENGTH_32BITS: 31701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 31711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 31721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_LENGTH_64BITS: 31731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT7 + BIT6; 31741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 31751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 31761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR3, val); 3177d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3178d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* PRE - Preamble pattern */ 31791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0; 31801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (info->params.preamble) 31811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 31821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_FLAGS: val = 0x7e; break; 31831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_10: val = 0xaa; break; 31841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_01: val = 0x55; break; 31851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HDLC_PREAMBLE_PATTERN_ONES: val = 0xff; break; 31861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 31871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + PRE, val); 3188d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 31891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR4 31901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 MCK4 Master Clock Divide by 4, 1=enabled 31921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled 31931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 TST1 Test Pin, 0=normal operation 31941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ICD Ivert Carrier Detect, 1=enabled (active low) 31951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..02 Reserved, must be 0 31961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 RFT[1..0] RxFIFO Threshold 00=32 bytes 31971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 0000 3199d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x50; 32011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR4, val); 32021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_RXC_DPLL) 32031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.clock_speed * 16); 32041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 32051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.clock_speed); 3206d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 32071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RLCR Receive length check register 32081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 7 1=enable receive length check 32101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 6..0 Max frame length = (RL + 1) * 32 3211d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + RLCR, 0); 3213d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 32141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* XBCH Transmit Byte Count High 32151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 DMA mode, 0 = interrupt driven 32171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 NRM, 0=ABM (ignored) 32181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 CAS Carrier Auto Start 32191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 XC Transmit Continuously (ignored) 32201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..00 XBC[10..8] Transmit byte count bits 10..8 32211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3223d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 32251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_DCD) 32261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 32271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + XBCH, val); 32281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enable_auxclk(info); 32291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.loopback || info->testing_irq) 32301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds loopback_enable(info); 32311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_CTS) 32321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 32331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHB, IRQ_CTS); 3234d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* PVR[3] 1=AUTO CTS active */ 32351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + PVR, BIT3); 32361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 32371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + PVR, BIT3); 32381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 32391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, 32401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_RXEOM + IRQ_RXFIFO + IRQ_ALLSENT + 32411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_UNDERRUN + IRQ_TXFIFO); 32421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET); 32431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_command_complete(info, CHA); 32441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_reg16(info, CHA + ISR); /* clear pending IRQs */ 3245d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 32461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Master clock mode enabled above to allow reset commands 32471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to complete even if no data clocks are present. 32481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Disable master clock mode for normal communications because 32501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * V3.2 of the ESCC2 has a bug that prevents the transmit all sent 32511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * IRQ when in master clock mode. 32521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 32531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Leave master clock mode enabled for IRQ test because the 32541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * timer IRQ used by the test can only happen in master clock mode. 3255d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 32561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->testing_irq) 32571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + CCR0, BIT6); 32581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 32591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_set_idle(info); 32601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 32611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 32621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_stop(info); 32631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 32641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3265cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_stop(MGSLPC_INFO *info) 32661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 32671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 32681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_stop(%s)\n", 32691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 3270d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3271d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:03 RAC Receiver Active, 0=inactive */ 32721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + MODE, BIT3); 32731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 32740fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_enabled = false; 32750fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_overflow = false; 32761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 32771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3278cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_start(MGSLPC_INFO *info) 32791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 32801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 32811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_start(%s)\n", 32821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 32831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 32841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rx_reset_buffers(info); 32850fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_enabled = false; 32860fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_overflow = false; 32871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3288d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:03 RAC Receiver Active, 1=active */ 32891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + MODE, BIT3); 32901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 32910fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->rx_enabled = true; 32921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 32931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3294eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic void tx_start(MGSLPC_INFO *info, struct tty_struct *tty) 32951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 32961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 32971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):tx_start(%s)\n", 32981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 3299d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 33001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->tx_count) { 33011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If auto RTS enabled and RTS is inactive, then assert */ 33021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RTS and set a flag indicating that the driver should */ 33031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* negate RTS when the transmission completes. */ 33040fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->drop_rts_on_tx_done = false; 33051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_RTS) { 33071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 33081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->serial_signals & SerialSignal_RTS)) { 33091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS; 33101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_signals(info); 33110fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->drop_rts_on_tx_done = true; 33121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 33131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 33141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) { 33161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_active) { 33170fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = true; 3318eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_ready(info, tty); 33191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 33201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 33210fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = true; 3322eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_ready(info, tty); 332340565f1962c5be9b9e285e05af01ab7771534868Jiri Slaby mod_timer(&info->tx_timer, jiffies + 332440565f1962c5be9b9e285e05af01ab7771534868Jiri Slaby msecs_to_jiffies(5000)); 33251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 33261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 33271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info->tx_enabled) 33290fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_enabled = true; 33301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 33311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3332cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void tx_stop(MGSLPC_INFO *info) 33331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 33341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_ISR) 33351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):tx_stop(%s)\n", 33361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__, info->device_name ); 3337d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3338d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik del_timer(&info->tx_timer); 33391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33400fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_enabled = false; 33410fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 33421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 33431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Reset the adapter to a known state and prepare it for further use. 33451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3346cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void reset_device(MGSLPC_INFO *info) 33471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3348d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* power up both channels (set BIT7) */ 33491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR0, 0x80); 33501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + CCR0, 0x80); 33511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, 0); 33521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHB + MODE, 0); 3353d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3354d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* disable all interrupts */ 33551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, 0xffff); 33561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, 0xffff); 33571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, 0xff); 3358d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 33591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* PCR Port Configuration Register 33601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..04 DEC[3..0] Serial I/F select outputs 33621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 output, 1=AUTO CTS control enabled 33631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RI Ring Indicator input 0=active 33641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 DSR input 0=active 33651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DTR output 0=active 33661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0110 3368d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 33691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, PCR, 0x06); 3370d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 33711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* PVR Port Value Register 33721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..04 DEC[3..0] Serial I/F select (0000=disabled) 33741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 AUTO CTS output 1=enabled 33751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RI Ring Indicator input 33761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 DSR input 33771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DTR output (1=inactive) 33781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0001 33801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 33811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// write_reg(info, PVR, PVR_DTR); 3382d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 33831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* IPC Interrupt Port Configuration 33841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 VIS 1=Masked interrupts visible 33861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06..05 Reserved, 0 33871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..03 SLA Slave address, 00 ignored 33881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 CASM Cascading Mode, 1=daisy chain 33891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 IC[1..0] Interrupt Config, 01=push-pull output, active low 33901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 33911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0101 3392d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 33931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, IPC, 0x05); 33941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 33951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3396cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void async_mode(MGSLPC_INFO *info) 33971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 33981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 33991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3400d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* disable all interrupts */ 34011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHA, 0xffff); 34021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_disable(info, CHB, 0xffff); 34031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_irq_disable(info, 0xff); 3404d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MODE 34061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 Reserved, 0 34081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 FRTS RTS State, 0=active 34091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 FCTS Flow Control on CTS 34101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 FLON Flow Control Enable 34111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 RAC Receiver Active, 0 = inactive 34121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RTS 0=Auto RTS, 1=manual RTS 34131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 TRS Timer Resolution, 1=512 34141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TLP Test Loop, 0 = no loop 34151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0110 3417d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x06; 34191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.loopback) 34201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; 3421d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3422d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* preserve RTS state */ 34231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->serial_signals & SerialSignal_RTS)) 34241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 34251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 3426d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR0 34281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 PU Power Up, 1=active, 0=power down 34301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 MCE Master Clock Enable, 1=enabled 34311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Reserved, 0 34321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..02 SC[2..0] Encoding, 000=NRZ 34331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 SM[1..0] Serial Mode, 11=Async 34341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1000 0011 3436d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR0, 0x83); 3438d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR1 34401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..05 Reserved, 0 34421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ODS Output Driver Select, 1=TxD is push-pull output 34431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 BCR Bit Clock Rate, 1=16x 34441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02..00 CM[2..0] Clock Mode, 111=BRG 34451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 1111 3447d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR1, 0x1f); 3449d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR2 (channel A) 34511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..06 BGR[9..8] Baud rate bits 9..8 34531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value 34541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 SSEL Clock source select, 1=submode b 34551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03 TOE 0=TxCLK is input, 0=TxCLK is input 34561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 RWX Read/Write Exchange 0=disabled 34571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 Reserved, 0 34581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 DIV, data inversion 0=disabled, 1=enabled 34591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0001 0000 3461d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR2, 0x10); 3463d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR3 34651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07..01 Reserved, 0 34671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 PSD DPLL Phase Shift Disable 34681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3470d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR3, 0); 3472d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* CCR4 34741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 MCK4 Master Clock Divide by 4, 1=enabled 34761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled 34771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 TST1 Test Pin, 0=normal operation 34781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 ICD Ivert Carrier Detect, 1=enabled (active low) 34791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..00 Reserved, must be 0 34801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 0000 3482d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + CCR4, 0x50); 34841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mgslpc_set_rate(info, CHA, info->params.data_rate * 16); 3485d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 34861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* DAFO Data Format 34871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 34881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 Reserved, 0 34891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 XBRK transmit break, 0=normal operation 34901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 Stop bits (0=1, 1=2) 34911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04..03 PAR[1..0] Parity (01=odd, 10=even) 34921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 02 PAREN Parity Enable 34931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01..00 CHL[1..0] Character Length (00=8, 01=7) 34941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3495d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 34961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 34971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.data_bits != 8) 34981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT0; /* 7 bits */ 34991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.stop_bits != 1) 35001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 35011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.parity != ASYNC_PARITY_NONE) 35021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 35031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; /* Parity enable */ 35041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.parity == ASYNC_PARITY_ODD) 35051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT3; 35061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 35071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT4; 35081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 35091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + DAFO, val); 3510d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RFC Rx FIFO Control 35121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 Reserved, 0 35141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 DPS, 1=parity bit not stored in data byte 35151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 DXS, 0=all data stored in FIFO (including XON/XOFF) 35161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 RFDF Rx FIFO Data Format, 1=status byte stored in FIFO 35171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..02 RFTH[1..0], rx threshold, 11=16 status + 16 data byte 35181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 01 Reserved, 0 35191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 00 TCDE Terminate Char Detect Enable, 0=disabled 35201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0101 1100 3522d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + RFC, 0x5c); 3524d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* RLCR Receive length check register 35261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Max frame length = (RL + 1) * 32 3528d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + RLCR, 0); 3530d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 35311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* XBCH Transmit Byte Count High 35321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 07 DMA mode, 0 = interrupt driven 35341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 NRM, 0=ABM (ignored) 35351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 CAS Carrier Auto Start 35361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 XC Transmit Continuously (ignored) 35371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 03..00 XBC[10..8] Transmit byte count bits 10..8 35381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 35391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0000 0000 3540d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik */ 35411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = 0x00; 35421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_DCD) 35431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT5; 35441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + XBCH, val); 35451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_CTS) 35461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, IRQ_CTS); 3547d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3548d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* MODE:03 RAC Receiver Active, 1=active */ 35491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + MODE, BIT3); 35501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enable_auxclk(info); 35511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.flags & HDLC_FLAG_AUTO_CTS) { 35521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHB, IRQ_CTS); 3553d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* PVR[3] 1=AUTO CTS active */ 35541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + PVR, BIT3); 35551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 35561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + PVR, BIT3); 35571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, 35581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_RXEOM + IRQ_RXFIFO + IRQ_BREAK_ON + IRQ_RXTIME + 35591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRQ_ALLSENT + IRQ_TXFIFO); 35601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET); 35611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_command_complete(info, CHA); 35621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds read_reg16(info, CHA + ISR); /* clear pending IRQs */ 35631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 35641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set the HDLC idle mode for the transmitter. 35661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3567cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void tx_set_idle(MGSLPC_INFO *info) 35681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3569d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* Note: ESCC2 only supports flags and one idle modes */ 35701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->idle_mode == HDLC_TXIDLE_FLAGS) 35711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + CCR1, BIT3); 35721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 35731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + CCR1, BIT3); 35741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 35751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* get state of the V24 status (input) signals. 35771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3578cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void get_signals(MGSLPC_INFO *info) 35791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 35801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char status = 0; 3581d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3582d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik /* preserve DTR and RTS */ 35831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS; 35841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (read_reg(info, CHB + VSTR) & BIT7) 35861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DCD; 35871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (read_reg(info, CHB + STAR) & BIT1) 35881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_CTS; 35891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = read_reg(info, CHA + PVR); 35911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(status & PVR_RI)) 35921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RI; 35931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(status & PVR_DSR)) 35941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_DSR; 35951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 35961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Set the state of DTR and RTS based on contents of 35981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * serial_signals member of device extension. 35991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3600cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void set_signals(MGSLPC_INFO *info) 36011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 36021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char val; 36031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = read_reg(info, CHA + MODE); 36051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.mode == MGSL_MODE_ASYNC) { 36061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 36071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= ~BIT6; 36081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 36091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT6; 36101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 36111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_RTS) 36121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val |= BIT2; 36131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 36141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val &= ~BIT2; 36151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 36161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + MODE, val); 36171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->serial_signals & SerialSignal_DTR) 36191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_reg_bits(info, CHA + PVR, PVR_DTR); 36201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 36211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_reg_bits(info, CHA + PVR, PVR_DTR); 36221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 36231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3624cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void rx_reset_buffers(MGSLPC_INFO *info) 36251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 36261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds RXBUF *buf; 36271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 36281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_put = 0; 36301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_get = 0; 36311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_frame_count = 0; 36321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i=0 ; i < info->rx_buf_count ; i++) { 36331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = (RXBUF*)(info->rx_buf + (i * info->rx_buf_size)); 36341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->status = buf->count = 0; 36351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 36361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 36371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Attempt to return a received HDLC frame 36391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Only frames received without errors are returned. 36401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 36410fab6de09c71a976e5d765e1ff548b14be385153Joe Perches * Returns true if frame returned, otherwise false 36421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3643eeb4613436f0f19a38f667ea3078821040559c68Alan Coxstatic bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty) 36441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 36451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short status; 36461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds RXBUF *buf; 36471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int framesize = 0; 36481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 36490fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool return_frame = false; 3650d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_frame_count == 0) 36520fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return false; 36531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = (RXBUF*)(info->rx_buf + (info->rx_get * info->rx_buf_size)); 36551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = buf->status; 36571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 07 VFR 1=valid frame 36591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06 RDO 1=data overrun 36601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05 CRC 1=OK, 0=error 36611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 04 RAB 1=frame aborted 36621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 36631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((status & 0xf0) != 0xA0) { 36641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(status & BIT7) || (status & BIT4)) 36651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxabort++; 36661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (status & BIT6) 36671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxover++; 36681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (!(status & BIT5)) { 36691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxcrc++; 36701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type & HDLC_CRC_RETURN_EX) 36710fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return_frame = true; 36721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 36731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize = 0; 3674af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 36751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 3676198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa info->netdev->stats.rx_errors++; 3677198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa info->netdev->stats.rx_frame_errors++; 36781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 36791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 36801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 36810fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return_frame = true; 36821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_frame) 36841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize = buf->count; 36851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_BH) 36871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):rx_get_frame(%s) status=%04X size=%d\n", 36881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name,status,framesize); 3689d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_DATA) 3691d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik trace_block(info, buf->data, framesize, 0); 3692d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 36931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (framesize) { 36941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((info->params.crc_type & HDLC_CRC_RETURN_EX && 36951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize+1 > info->max_frame_size) || 36961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds framesize > info->max_frame_size) 36971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxlong++; 36981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 36991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & BIT5) 37001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.rxok++; 37011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.crc_type & HDLC_CRC_RETURN_EX) { 37031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *(buf->data + framesize) = status & BIT5 ? RX_OK:RX_CRC_ERROR; 37041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++framesize; 37051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3707af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 37081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 37091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_rx(info, buf->data, framesize); 37101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 37111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 37121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ldisc_receive_buf(tty, buf->data, info->flag_buf, framesize); 37131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 37171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->status = buf->count = 0; 37181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_frame_count--; 37191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_get++; 37201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->rx_get >= info->rx_buf_count) 37211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->rx_get = 0; 37221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 37231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37240fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return true; 37251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 37261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37270fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool register_test(MGSLPC_INFO *info) 37281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3729d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik static unsigned char patterns[] = 37301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0x00, 0xff, 0xaa, 0x55, 0x69, 0x96, 0x0f }; 3731fe971071a89c5c5184fc9f3482c7a8e997cf0520Tobias Klauser static unsigned int count = ARRAY_SIZE(patterns); 37321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int i; 37330fab6de09c71a976e5d765e1ff548b14be385153Joe Perches bool rc = true; 37341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 37351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 37371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 37381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < count; i++) { 37401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, XAD1, patterns[i]); 37411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, XAD2, patterns[(i + 1) % count]); 3742fe971071a89c5c5184fc9f3482c7a8e997cf0520Tobias Klauser if ((read_reg(info, XAD1) != patterns[i]) || 37431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (read_reg(info, XAD2) != patterns[(i + 1) % count])) { 37440fab6de09c71a976e5d765e1ff548b14be385153Joe Perches rc = false; 37451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 37461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 37501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 37511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 37521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37530fab6de09c71a976e5d765e1ff548b14be385153Joe Perchesstatic bool irq_test(MGSLPC_INFO *info) 37541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 37551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long end_time; 37561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 37571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 37591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 37601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37610fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->testing_irq = true; 37621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_mode(info); 37631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37640fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->irq_occurred = false; 37651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* init hdlc mode */ 37671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irq_enable(info, CHA, IRQ_TIMER); 37691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds write_reg(info, CHA + TIMR, 0); /* 512 cycles */ 37701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds issue_command(info, CHA, CMD_START_TIMER); 37711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 37731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds end_time=100; 37751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(end_time-- && !info->irq_occurred) { 37761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(10); 37771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3778d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 37790fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->testing_irq = false; 37801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 37821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reset_device(info); 37831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 3784d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 37850fab6de09c71a976e5d765e1ff548b14be385153Joe Perches return info->irq_occurred; 37861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 37871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3788cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic int adapter_test(MGSLPC_INFO *info) 37891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 37901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!register_test(info)) { 37911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->init_error = DiagStatus_AddressFailure; 37921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):Register test failure for device %s Addr=%04X\n", 37931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name, (unsigned short)(info->io_base) ); 37941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 37951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 37961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!irq_test(info)) { 37981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->init_error = DiagStatus_IrqFailure; 37991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):Interrupt test failure for device %s IRQ=%d\n", 38001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name, (unsigned short)(info->irq_level) ); 38011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 38021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 38051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s(%d):device %s passed diagnostics\n", 38061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 38071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 38081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 38091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3810cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit) 38111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 38131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int linecount; 38141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (xmit) 38151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s tx data:\n",info->device_name); 38161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 38171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s rx data:\n",info->device_name); 3818d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 38191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(count) { 38201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count > 16) 38211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds linecount = 16; 38221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 38231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds linecount = count; 3824d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 38251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0;i<linecount;i++) 38261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%02X ",(unsigned char)data[i]); 38271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(;i<17;i++) 38281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" "); 38291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0;i<linecount;i++) { 38301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (data[i]>=040 && data[i]<=0176) 38311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%c",data[i]); 38321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 38331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("."); 38341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 3836d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 38371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data += linecount; 38381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= linecount; 38391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 38411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* HDLC frame time out 38431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * update stats and do tx completion processing 38441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3845cdaad343b561cdeb38b0578bb038eb5e87ed5551Peter Hagervallstatic void tx_timeout(unsigned long context) 38461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = (MGSLPC_INFO*)context; 38481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 3849d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 38501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ( debug_level >= DEBUG_LEVEL_INFO ) 38511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk( "%s(%d):tx_timeout(%s)\n", 38521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FILE__,__LINE__,info->device_name); 38531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(info->tx_active && 38541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.mode == MGSL_MODE_HDLC) { 38551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->icount.txtimeout++; 38561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 38571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 38580fab6de09c71a976e5d765e1ff548b14be385153Joe Perches info->tx_active = false; 38591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_count = info->tx_put = info->tx_get = 0; 38601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 3862d12341f9f2b7cc38c699c2af3a9f17eb39b64b17Jeff Garzik 3863af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 38641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->netcount) 38651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlcdev_tx_done(info); 38661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 38671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 3868eeb4613436f0f19a38f667ea3078821040559c68Alan Cox { 3869eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty = tty_port_tty_get(&info->port); 3870eeb4613436f0f19a38f667ea3078821040559c68Alan Cox bh_transmit(info, tty); 3871eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 3872eeb4613436f0f19a38f667ea3078821040559c68Alan Cox } 38731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 38741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3875af69c7f924b272927f9aea378f34f4548d3888d9Paul Fulghum#if SYNCLINK_GENERIC_HDLC 38761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 38781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) 38791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * set encoding and frame check sequence (FCS) options 38801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 38811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 38821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * encoding serial encoding setting 38831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * parity FCS setting 38841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 38851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 38861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 38871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_attach(struct net_device *dev, unsigned short encoding, 38881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short parity) 38891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 3891eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty; 38921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char new_encoding; 38931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short new_crctype; 38941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return error if TTY interface open */ 3896eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.count) 38971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 38981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (encoding) 39001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 39011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break; 39021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break; 39031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break; 39041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break; 39051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break; 39061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: return -EINVAL; 39071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (parity) 39101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 39111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break; 39121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break; 39131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break; 39141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: return -EINVAL; 39151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 39161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.encoding = new_encoding; 391853b3531bbbf70ac7551b32d1acc229d94de52658Alexey Dobriyan info->params.crc_type = new_crctype; 39191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if network interface up, reprogram hardware */ 3921eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->netcount) { 3922eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty = tty_port_tty_get(&info->port); 3923eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_program_hw(info, tty); 3924eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 3925eeb4613436f0f19a38f667ea3078821040559c68Alan Cox } 39261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 39281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 39291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 39311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by generic HDLC layer to send frame 39321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 39331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * skb socket buffer containing HDLC frame 39341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 39351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 39364c5d502d8b2db8947c44dc44bdc67dbe55cce2b9Stephen Hemmingerstatic netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, 39374c5d502d8b2db8947c44dc44bdc67dbe55cce2b9Stephen Hemminger struct net_device *dev) 39381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 39391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 39401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 39411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 39431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "%s:hdlc_xmit(%s)\n",__FILE__,dev->name); 39441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* stop sending until this frame completes */ 39461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_stop_queue(dev); 39471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy data to device buffers */ 3949d626f62b11e00c16e81e4308ab93d3f13551812aArnaldo Carvalho de Melo skb_copy_from_linear_data(skb, info->tx_buf, skb->len); 39501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_get = 0; 39511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->tx_put = info->tx_count = skb->len; 39521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* update network statistics */ 3954198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_packets++; 3955198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_bytes += skb->len; 39561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* done with socket buffer, so free it */ 39581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_kfree_skb(skb); 39591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save start time for transmit timeout detection */ 39611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->trans_start = jiffies; 39621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* start hardware transmitter if necessary */ 39641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 3965eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (!info->tx_active) { 3966eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty = tty_port_tty_get(&info->port); 3967eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tx_start(info, tty); 3968eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 3969eeb4613436f0f19a38f667ea3078821040559c68Alan Cox } 39701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 39711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39724c5d502d8b2db8947c44dc44bdc67dbe55cce2b9Stephen Hemminger return NETDEV_TX_OK; 39731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 39741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 39761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer when interface enabled 39771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * claim resources and initialize hardware 39781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 39791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 39801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 39811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 39821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 39831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_open(struct net_device *dev) 39841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 39851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 3986eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty; 39871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 39881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 39891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 39911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s:hdlcdev_open(%s)\n",__FILE__,dev->name); 39921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* generic HDLC layer open processing */ 39941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = hdlc_open(dev))) 39951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 39961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* arbitrate between network and tty opens */ 39981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 3999eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.count != 0 || info->netcount != 0) { 40001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); 40011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 40021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 40031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 40041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netcount=1; 40051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 40061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4007eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty = tty_port_tty_get(&info->port); 40081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* claim resources and init adapter */ 4009eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if ((rc = startup(info, tty)) != 0) { 4010eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 40111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 40121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netcount=0; 40131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 40141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 40151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 40161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* assert DTR and RTS, apply hardware settings */ 40171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; 4018eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_program_hw(info, tty); 4019eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 40201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* enable network layer transmit */ 40221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->trans_start = jiffies; 40231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_start_queue(dev); 40241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* inform generic HDLC layer of current DCD status */ 40261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock, flags); 40271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds get_signals(info); 40281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock, flags); 4029fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa if (info->serial_signals & SerialSignal_DCD) 4030fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_on(dev); 4031fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa else 4032fbeff3c1d35d07b1f967e47fcfb00cd16b7ecd02Krzysztof Halasa netif_carrier_off(dev); 40331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 40341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 40351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 40371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer when interface is disabled 40381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * shutdown hardware and release resources 40391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 40401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 40411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 40421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 40431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 40441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_close(struct net_device *dev) 40451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 40461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 4047eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty = tty_port_tty_get(&info->port); 40481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 40491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 40511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s:hdlcdev_close(%s)\n",__FILE__,dev->name); 40521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_stop_queue(dev); 40541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* shutdown adapter and release resources */ 4056eeb4613436f0f19a38f667ea3078821040559c68Alan Cox shutdown(info, tty); 4057eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 40581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_close(dev); 40591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->netlock, flags); 40611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netcount=0; 40621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->netlock, flags); 40631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 40651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 40661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 40681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer to process IOCTL call to network device 40691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 40701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 40711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ifr pointer to network interface request structure 40721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * cmd IOCTL command code 40731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 40741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 40751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 40761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 40771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 40781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const size_t size = sizeof(sync_serial_settings); 40791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sync_serial_settings new_line; 40801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; 40811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 40821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int flags; 40831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 40851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); 40861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return error if TTY interface open */ 4088eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->port.count) 40891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 40901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cmd != SIOCWANDEV) 40921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return hdlc_ioctl(dev, ifr, cmd); 40931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40945b917a1420d3d1a9c8da49fb0090692dc9aaee86Vasiliy Kulikov memset(&new_line, 0, size); 40955b917a1420d3d1a9c8da49fb0090692dc9aaee86Vasiliy Kulikov 40961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(ifr->ifr_settings.type) { 40971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case IF_GET_IFACE: /* return current sync_serial_settings */ 40981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 40991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; 41001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ifr->ifr_settings.size < size) { 41011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ifr->ifr_settings.size = size; /* data size wanted */ 41021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOBUFS; 41031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 41041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | 41061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | 41071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | 41081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); 41091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (flags){ 41111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; 41121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; 41131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break; 41141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break; 41151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: new_line.clock_type = CLOCK_DEFAULT; 41161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 41171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_line.clock_rate = info->params.clock_speed; 41191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_line.loopback = info->params.loopback ? 1:0; 41201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_to_user(line, &new_line, size)) 41221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 41231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 41241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */ 41261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!capable(CAP_NET_ADMIN)) 41281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EPERM; 41291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(&new_line, line, size)) 41301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 41311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (new_line.clock_type) 41331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 41341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break; 41351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break; 41361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break; 41371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break; 41381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CLOCK_DEFAULT: flags = info->params.flags & 41391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | 41401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | 41411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | 41421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break; 41431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: return -EINVAL; 41441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 41451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (new_line.loopback != 0 && new_line.loopback != 1) 41471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 41481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | 41501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | 41511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | 41521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); 41531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.flags |= flags; 41541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.loopback = new_line.loopback; 41561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG)) 41581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.clock_speed = new_line.clock_rate; 41591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 41601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.clock_speed = 0; 41611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if network interface up, reprogram hardware */ 4163eeb4613436f0f19a38f667ea3078821040559c68Alan Cox if (info->netcount) { 4164eeb4613436f0f19a38f667ea3078821040559c68Alan Cox struct tty_struct *tty = tty_port_tty_get(&info->port); 4165eeb4613436f0f19a38f667ea3078821040559c68Alan Cox mgslpc_program_hw(info, tty); 4166eeb4613436f0f19a38f667ea3078821040559c68Alan Cox tty_kref_put(tty); 4167eeb4613436f0f19a38f667ea3078821040559c68Alan Cox } 41681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 41691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 41711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return hdlc_ioctl(dev, ifr, cmd); 41721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 41731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 41741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 41761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by network layer when transmit timeout is detected 41771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev pointer to network device structure 41791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 41801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_tx_timeout(struct net_device *dev) 41811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 41821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MGSLPC_INFO *info = dev_to_port(dev); 41831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 41841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 41861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("hdlcdev_tx_timeout(%s)\n",dev->name); 41871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4188198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_errors++; 4189198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.tx_aborted_errors++; 41901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&info->lock,flags); 41921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tx_stop(info); 41931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&info->lock,flags); 41941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_wake_queue(dev); 41961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 41971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 41991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when transmit completes 42001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reenable network layer transmit if stopped 42011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 42031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 42041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_tx_done(MGSLPC_INFO *info) 42051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 42061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (netif_queue_stopped(info->netdev)) 42071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_wake_queue(info->netdev); 42081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 42091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 42111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when frame received 42121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * pass frame to network layer 42131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 42151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * buf pointer to buffer contianing frame data 42161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * size count of data bytes in buf 42171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 42181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size) 42191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 42201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sk_buff *skb = dev_alloc_skb(size); 42211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *dev = info->netdev; 42221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_level >= DEBUG_LEVEL_INFO) 42241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("hdlcdev_rx(%s)\n",dev->name); 42251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (skb == NULL) { 42271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", dev->name); 4228198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.rx_dropped++; 42291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 42301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 42311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4232198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa memcpy(skb_put(skb, size), buf, size); 42331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4234198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa skb->protocol = hdlc_type_trans(skb, dev); 42351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4236198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.rx_packets++; 4237198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa dev->stats.rx_bytes += size; 42381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds netif_rx(skb); 42401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 42411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4242991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasastatic const struct net_device_ops hdlcdev_ops = { 4243991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa .ndo_open = hdlcdev_open, 4244991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa .ndo_stop = hdlcdev_close, 4245991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa .ndo_change_mtu = hdlc_change_mtu, 4246991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa .ndo_start_xmit = hdlc_start_xmit, 4247991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa .ndo_do_ioctl = hdlcdev_ioctl, 4248991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa .ndo_tx_timeout = hdlcdev_tx_timeout, 4249991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa}; 4250991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa 42511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 42521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when adding device instance 42531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * do generic HDLC initialization 42541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 42561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 42571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns 0 if success, otherwise error code 42581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 42591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int hdlcdev_init(MGSLPC_INFO *info) 42601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 42611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 42621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *dev; 42631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc_device *hdlc; 42641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate and initialize network and HDLC layer objects */ 42661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(dev = alloc_hdlcdev(info))) { 42681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "%s:hdlc device allocation failure\n",__FILE__); 42691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 42701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 42711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* for network layer reporting purposes only */ 42731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->base_addr = info->io_base; 42741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->irq = info->irq_level; 42751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* network layer callbacks and settings */ 4277991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa dev->netdev_ops = &hdlcdev_ops; 4278991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa dev->watchdog_timeo = 10 * HZ; 42791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->tx_queue_len = 50; 42801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* generic HDLC layer callbacks and settings */ 42821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc = dev_to_hdlc(dev); 42831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc->attach = hdlcdev_attach; 42841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdlc->xmit = hdlcdev_xmit; 42851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* register objects with HDLC layer */ 42871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((rc = register_hdlc_device(dev))) { 42881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); 42891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_netdev(dev); 42901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 42911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 42921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netdev = dev; 42941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 42951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 42961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 42981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * called by device driver when removing device instance 42991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * do generic HDLC cleanup 43001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 43011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * info pointer to device instance information 43021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 43031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void hdlcdev_exit(MGSLPC_INFO *info) 43041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 43051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unregister_hdlc_device(info->netdev); 43061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_netdev(info->netdev); 43071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->netdev = NULL; 43081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 43091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_HDLC */ 43111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4312