Lines Matching refs:info
41 #define DBGDATA(info, buf, size, label) if (debug_level >= DEBUG_LEVEL_DATA) trace_block((info), (b… argument
397 #define slgt_irq_on(info, mask) \ argument
398 wr_reg16((info), SCR, (unsigned short)(rd_reg16((info), SCR) | (mask)))
399 #define slgt_irq_off(info, mask) \ argument
400 wr_reg16((info), SCR, (unsigned short)(rd_reg16((info), SCR) & ~(mask)))
402 static __u8 rd_reg8(struct slgt_info *info, unsigned int addr);
403 static void wr_reg8(struct slgt_info *info, unsigned int addr, __u8 value);
404 static __u16 rd_reg16(struct slgt_info *info, unsigned int addr);
405 static void wr_reg16(struct slgt_info *info, unsigned int addr, __u16 value);
406 static __u32 rd_reg32(struct slgt_info *info, unsigned int addr);
407 static void wr_reg32(struct slgt_info *info, unsigned int addr, __u32 value);
409 static void msc_set_vcr(struct slgt_info *info);
411 static int startup(struct slgt_info *info);
412 static int block_til_ready(struct tty_struct *tty, struct file * filp,struct slgt_info *info);
413 static void shutdown(struct slgt_info *info);
414 static void program_hw(struct slgt_info *info);
415 static void change_params(struct slgt_info *info);
417 static int adapter_test(struct slgt_info *info);
419 static void reset_port(struct slgt_info *info);
420 static void async_mode(struct slgt_info *info);
421 static void sync_mode(struct slgt_info *info);
423 static void rx_stop(struct slgt_info *info);
424 static void rx_start(struct slgt_info *info);
425 static void reset_rbufs(struct slgt_info *info);
426 static void free_rbufs(struct slgt_info *info, unsigned int first, unsigned int last);
427 static bool rx_get_frame(struct slgt_info *info);
428 static bool rx_get_buf(struct slgt_info *info);
430 static void tx_start(struct slgt_info *info);
431 static void tx_stop(struct slgt_info *info);
432 static void tx_set_idle(struct slgt_info *info);
433 static unsigned int tbuf_bytes(struct slgt_info *info);
434 static void reset_tbufs(struct slgt_info *info);
435 static void tdma_reset(struct slgt_info *info);
436 static bool tx_load(struct slgt_info *info, const char *buf, unsigned int count);
438 static void get_gtsignals(struct slgt_info *info);
439 static void set_gtsignals(struct slgt_info *info);
440 static void set_rate(struct slgt_info *info, u32 data_rate);
442 static void bh_transmit(struct slgt_info *info);
443 static void isr_txeom(struct slgt_info *info, unsigned short status);
451 static int get_stats(struct slgt_info *info, struct mgsl_icount __user *user_icount);
452 static int get_params(struct slgt_info *info, MGSL_PARAMS __user *params);
453 static int set_params(struct slgt_info *info, MGSL_PARAMS __user *params);
454 static int get_txidle(struct slgt_info *info, int __user *idle_mode);
455 static int set_txidle(struct slgt_info *info, int idle_mode);
456 static int tx_enable(struct slgt_info *info, int enable);
457 static int tx_abort(struct slgt_info *info);
458 static int rx_enable(struct slgt_info *info, int enable);
459 static int modem_input_wait(struct slgt_info *info,int arg);
460 static int wait_mgsl_event(struct slgt_info *info, int __user *mask_ptr);
461 static int get_interface(struct slgt_info *info, int __user *if_mode);
462 static int set_interface(struct slgt_info *info, int if_mode);
463 static int set_gpio(struct slgt_info *info, struct gpio_desc __user *gpio);
464 static int get_gpio(struct slgt_info *info, struct gpio_desc __user *gpio);
465 static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *gpio);
466 static int get_xsync(struct slgt_info *info, int __user *if_mode);
467 static int set_xsync(struct slgt_info *info, int if_mode);
468 static int get_xctrl(struct slgt_info *info, int __user *if_mode);
469 static int set_xctrl(struct slgt_info *info, int if_mode);
474 static void release_resources(struct slgt_info *info);
493 static void trace_block(struct slgt_info *info, const char *data, int count, const char *label) in trace_block() argument
497 printk("%s %s data:\n",info->device_name, label); in trace_block()
516 #define DBGDATA(info, buf, size, label) argument
520 static void dump_tbufs(struct slgt_info *info) in dump_tbufs() argument
523 printk("tbuf_current=%d\n", info->tbuf_current); in dump_tbufs()
524 for (i=0 ; i < info->tbuf_count ; i++) { in dump_tbufs()
526 i, le16_to_cpu(info->tbufs[i].count), le16_to_cpu(info->tbufs[i].status)); in dump_tbufs()
530 #define DBGTBUF(info) argument
534 static void dump_rbufs(struct slgt_info *info) in dump_rbufs() argument
537 printk("rbuf_current=%d\n", info->rbuf_current); in dump_rbufs()
538 for (i=0 ; i < info->rbuf_count ; i++) { in dump_rbufs()
540 i, le16_to_cpu(info->rbufs[i].count), le16_to_cpu(info->rbufs[i].status)); in dump_rbufs()
544 #define DBGRBUF(info) argument
547 static inline int sanity_check(struct slgt_info *info, char *devname, const char *name) in sanity_check() argument
550 if (!info) { in sanity_check()
555 if (!info) in sanity_check()
587 struct slgt_info *info; in open() local
597 info = slgt_device_list; in open()
598 while(info && info->line != line) in open()
599 info = info->next_device; in open()
600 if (sanity_check(info, tty->name, "open")) in open()
602 if (info->init_error) { in open()
603 DBGERR(("%s init error=%d\n", info->device_name, info->init_error)); in open()
607 tty->driver_data = info; in open()
608 info->port.tty = tty; in open()
610 DBGINFO(("%s open, old ref count = %d\n", info->device_name, info->port.count)); in open()
612 mutex_lock(&info->port.mutex); in open()
614 spin_lock_irqsave(&info->netlock, flags); in open()
615 if (info->netcount) { in open()
617 spin_unlock_irqrestore(&info->netlock, flags); in open()
618 mutex_unlock(&info->port.mutex); in open()
621 info->port.count++; in open()
622 spin_unlock_irqrestore(&info->netlock, flags); in open()
624 if (info->port.count == 1) { in open()
626 retval = startup(info); in open()
628 mutex_unlock(&info->port.mutex); in open()
632 mutex_unlock(&info->port.mutex); in open()
633 retval = block_til_ready(tty, filp, info); in open()
635 DBGINFO(("%s block_til_ready rc=%d\n", info->device_name, retval)); in open()
644 info->port.tty = NULL; /* tty layer will release tty struct */ in open()
645 if(info->port.count) in open()
646 info->port.count--; in open()
649 DBGINFO(("%s open rc=%d\n", info->device_name, retval)); in open()
655 struct slgt_info *info = tty->driver_data; in close() local
657 if (sanity_check(info, tty->name, "close")) in close()
659 DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count)); in close()
661 if (tty_port_close_start(&info->port, tty, filp) == 0) in close()
664 mutex_lock(&info->port.mutex); in close()
665 if (tty_port_initialized(&info->port)) in close()
666 wait_until_sent(tty, info->timeout); in close()
670 shutdown(info); in close()
671 mutex_unlock(&info->port.mutex); in close()
673 tty_port_close_end(&info->port, tty); in close()
674 info->port.tty = NULL; in close()
676 DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count)); in close()
681 struct slgt_info *info = tty->driver_data; in hangup() local
684 if (sanity_check(info, tty->name, "hangup")) in hangup()
686 DBGINFO(("%s hangup\n", info->device_name)); in hangup()
690 mutex_lock(&info->port.mutex); in hangup()
691 shutdown(info); in hangup()
693 spin_lock_irqsave(&info->port.lock, flags); in hangup()
694 info->port.count = 0; in hangup()
695 info->port.tty = NULL; in hangup()
696 spin_unlock_irqrestore(&info->port.lock, flags); in hangup()
697 tty_port_set_active(&info->port, false); in hangup()
698 mutex_unlock(&info->port.mutex); in hangup()
700 wake_up_interruptible(&info->port.open_wait); in hangup()
706 struct slgt_info *info = tty->driver_data; in set_termios() local
711 change_params(info); in set_termios()
715 info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR); in set_termios()
716 spin_lock_irqsave(&info->lock,flags); in set_termios()
717 set_gtsignals(info); in set_termios()
718 spin_unlock_irqrestore(&info->lock,flags); in set_termios()
723 info->signals |= SerialSignal_DTR; in set_termios()
725 info->signals |= SerialSignal_RTS; in set_termios()
726 spin_lock_irqsave(&info->lock,flags); in set_termios()
727 set_gtsignals(info); in set_termios()
728 spin_unlock_irqrestore(&info->lock,flags); in set_termios()
738 static void update_tx_timer(struct slgt_info *info) in update_tx_timer() argument
744 if (info->params.mode == MGSL_MODE_HDLC) { in update_tx_timer()
745 int timeout = (tbuf_bytes(info) * 7) + 1000; in update_tx_timer()
746 mod_timer(&info->tx_timer, jiffies + msecs_to_jiffies(timeout)); in update_tx_timer()
754 struct slgt_info *info = tty->driver_data; in write() local
757 if (sanity_check(info, tty->name, "write")) in write()
760 DBGINFO(("%s write count=%d\n", info->device_name, count)); in write()
762 if (!info->tx_buf || (count > info->max_frame_size)) in write()
768 spin_lock_irqsave(&info->lock, flags); in write()
770 if (info->tx_count) { in write()
772 if (!tx_load(info, info->tx_buf, info->tx_count)) in write()
774 info->tx_count = 0; in write()
777 if (tx_load(info, buf, count)) in write()
781 spin_unlock_irqrestore(&info->lock, flags); in write()
782 DBGINFO(("%s write rc=%d\n", info->device_name, ret)); in write()
788 struct slgt_info *info = tty->driver_data; in put_char() local
792 if (sanity_check(info, tty->name, "put_char")) in put_char()
794 DBGINFO(("%s put_char(%d)\n", info->device_name, ch)); in put_char()
795 if (!info->tx_buf) in put_char()
797 spin_lock_irqsave(&info->lock,flags); in put_char()
798 if (info->tx_count < info->max_frame_size) { in put_char()
799 info->tx_buf[info->tx_count++] = ch; in put_char()
802 spin_unlock_irqrestore(&info->lock,flags); in put_char()
808 struct slgt_info *info = tty->driver_data; in send_xchar() local
811 if (sanity_check(info, tty->name, "send_xchar")) in send_xchar()
813 DBGINFO(("%s send_xchar(%d)\n", info->device_name, ch)); in send_xchar()
814 info->x_char = ch; in send_xchar()
816 spin_lock_irqsave(&info->lock,flags); in send_xchar()
817 if (!info->tx_enabled) in send_xchar()
818 tx_start(info); in send_xchar()
819 spin_unlock_irqrestore(&info->lock,flags); in send_xchar()
825 struct slgt_info *info = tty->driver_data; in wait_until_sent() local
828 if (!info ) in wait_until_sent()
830 if (sanity_check(info, tty->name, "wait_until_sent")) in wait_until_sent()
832 DBGINFO(("%s wait_until_sent entry\n", info->device_name)); in wait_until_sent()
833 if (!tty_port_initialized(&info->port)) in wait_until_sent()
844 if (info->params.data_rate) { in wait_until_sent()
845 char_time = info->timeout/(32 * 5); in wait_until_sent()
854 while (info->tx_active) { in wait_until_sent()
862 DBGINFO(("%s wait_until_sent exit\n", info->device_name)); in wait_until_sent()
867 struct slgt_info *info = tty->driver_data; in write_room() local
870 if (sanity_check(info, tty->name, "write_room")) in write_room()
872 ret = (info->tx_active) ? 0 : HDLC_MAX_FRAME_SIZE; in write_room()
873 DBGINFO(("%s write_room=%u\n", info->device_name, ret)); in write_room()
879 struct slgt_info *info = tty->driver_data; in flush_chars() local
882 if (sanity_check(info, tty->name, "flush_chars")) in flush_chars()
884 DBGINFO(("%s flush_chars entry tx_count=%d\n", info->device_name, info->tx_count)); in flush_chars()
886 if (info->tx_count <= 0 || tty->flow.stopped || in flush_chars()
887 tty->hw_stopped || !info->tx_buf) in flush_chars()
890 DBGINFO(("%s flush_chars start transmit\n", info->device_name)); in flush_chars()
892 spin_lock_irqsave(&info->lock,flags); in flush_chars()
893 if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count)) in flush_chars()
894 info->tx_count = 0; in flush_chars()
895 spin_unlock_irqrestore(&info->lock,flags); in flush_chars()
900 struct slgt_info *info = tty->driver_data; in flush_buffer() local
903 if (sanity_check(info, tty->name, "flush_buffer")) in flush_buffer()
905 DBGINFO(("%s flush_buffer\n", info->device_name)); in flush_buffer()
907 spin_lock_irqsave(&info->lock, flags); in flush_buffer()
908 info->tx_count = 0; in flush_buffer()
909 spin_unlock_irqrestore(&info->lock, flags); in flush_buffer()
919 struct slgt_info *info = tty->driver_data; in tx_hold() local
922 if (sanity_check(info, tty->name, "tx_hold")) in tx_hold()
924 DBGINFO(("%s tx_hold\n", info->device_name)); in tx_hold()
925 spin_lock_irqsave(&info->lock,flags); in tx_hold()
926 if (info->tx_enabled && info->params.mode == MGSL_MODE_ASYNC) in tx_hold()
927 tx_stop(info); in tx_hold()
928 spin_unlock_irqrestore(&info->lock,flags); in tx_hold()
936 struct slgt_info *info = tty->driver_data; in tx_release() local
939 if (sanity_check(info, tty->name, "tx_release")) in tx_release()
941 DBGINFO(("%s tx_release\n", info->device_name)); in tx_release()
942 spin_lock_irqsave(&info->lock, flags); in tx_release()
943 if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count)) in tx_release()
944 info->tx_count = 0; in tx_release()
945 spin_unlock_irqrestore(&info->lock, flags); in tx_release()
962 struct slgt_info *info = tty->driver_data; in ioctl() local
966 if (sanity_check(info, tty->name, "ioctl")) in ioctl()
968 DBGINFO(("%s ioctl() cmd=%08X\n", info->device_name, cmd)); in ioctl()
977 return wait_mgsl_event(info, argp); in ioctl()
979 return modem_input_wait(info,(int)arg); in ioctl()
981 return set_gpio(info, argp); in ioctl()
983 return get_gpio(info, argp); in ioctl()
985 return wait_gpio(info, argp); in ioctl()
987 return get_xsync(info, argp); in ioctl()
989 return set_xsync(info, (int)arg); in ioctl()
991 return get_xctrl(info, argp); in ioctl()
993 return set_xctrl(info, (int)arg); in ioctl()
995 mutex_lock(&info->port.mutex); in ioctl()
998 ret = get_params(info, argp); in ioctl()
1001 ret = set_params(info, argp); in ioctl()
1004 ret = get_txidle(info, argp); in ioctl()
1007 ret = set_txidle(info, (int)arg); in ioctl()
1010 ret = tx_enable(info, (int)arg); in ioctl()
1013 ret = rx_enable(info, (int)arg); in ioctl()
1016 ret = tx_abort(info); in ioctl()
1019 ret = get_stats(info, argp); in ioctl()
1022 ret = get_interface(info, argp); in ioctl()
1025 ret = set_interface(info,(int)arg); in ioctl()
1030 mutex_unlock(&info->port.mutex); in ioctl()
1038 struct slgt_info *info = tty->driver_data; in get_icount() local
1042 spin_lock_irqsave(&info->lock,flags); in get_icount()
1043 cnow = info->icount; in get_icount()
1044 spin_unlock_irqrestore(&info->lock,flags); in get_icount()
1065 static long get_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *user_params) in get_params32() argument
1069 DBGINFO(("%s get_params32\n", info->device_name)); in get_params32()
1071 tmp_params.mode = (compat_ulong_t)info->params.mode; in get_params32()
1072 tmp_params.loopback = info->params.loopback; in get_params32()
1073 tmp_params.flags = info->params.flags; in get_params32()
1074 tmp_params.encoding = info->params.encoding; in get_params32()
1075 tmp_params.clock_speed = (compat_ulong_t)info->params.clock_speed; in get_params32()
1076 tmp_params.addr_filter = info->params.addr_filter; in get_params32()
1077 tmp_params.crc_type = info->params.crc_type; in get_params32()
1078 tmp_params.preamble_length = info->params.preamble_length; in get_params32()
1079 tmp_params.preamble = info->params.preamble; in get_params32()
1080 tmp_params.data_rate = (compat_ulong_t)info->params.data_rate; in get_params32()
1081 tmp_params.data_bits = info->params.data_bits; in get_params32()
1082 tmp_params.stop_bits = info->params.stop_bits; in get_params32()
1083 tmp_params.parity = info->params.parity; in get_params32()
1089 static long set_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *new_params) in set_params32() argument
1093 DBGINFO(("%s set_params32\n", info->device_name)); in set_params32()
1097 spin_lock(&info->lock); in set_params32()
1099 info->base_clock = tmp_params.clock_speed; in set_params32()
1101 info->params.mode = tmp_params.mode; in set_params32()
1102 info->params.loopback = tmp_params.loopback; in set_params32()
1103 info->params.flags = tmp_params.flags; in set_params32()
1104 info->params.encoding = tmp_params.encoding; in set_params32()
1105 info->params.clock_speed = tmp_params.clock_speed; in set_params32()
1106 info->params.addr_filter = tmp_params.addr_filter; in set_params32()
1107 info->params.crc_type = tmp_params.crc_type; in set_params32()
1108 info->params.preamble_length = tmp_params.preamble_length; in set_params32()
1109 info->params.preamble = tmp_params.preamble; in set_params32()
1110 info->params.data_rate = tmp_params.data_rate; in set_params32()
1111 info->params.data_bits = tmp_params.data_bits; in set_params32()
1112 info->params.stop_bits = tmp_params.stop_bits; in set_params32()
1113 info->params.parity = tmp_params.parity; in set_params32()
1115 spin_unlock(&info->lock); in set_params32()
1117 program_hw(info); in set_params32()
1125 struct slgt_info *info = tty->driver_data; in slgt_compat_ioctl() local
1128 if (sanity_check(info, tty->name, "compat_ioctl")) in slgt_compat_ioctl()
1130 DBGINFO(("%s compat_ioctl() cmd=%08X\n", info->device_name, cmd)); in slgt_compat_ioctl()
1134 rc = set_params32(info, compat_ptr(arg)); in slgt_compat_ioctl()
1138 rc = get_params32(info, compat_ptr(arg)); in slgt_compat_ioctl()
1157 DBGINFO(("%s compat_ioctl() cmd=%08X rc=%d\n", info->device_name, cmd, rc)); in slgt_compat_ioctl()
1167 static inline void line_info(struct seq_file *m, struct slgt_info *info) in line_info() argument
1173 info->device_name, info->phys_reg_addr, in line_info()
1174 info->irq_level, info->max_frame_size); in line_info()
1177 spin_lock_irqsave(&info->lock,flags); in line_info()
1178 get_gtsignals(info); in line_info()
1179 spin_unlock_irqrestore(&info->lock,flags); in line_info()
1183 if (info->signals & SerialSignal_RTS) in line_info()
1185 if (info->signals & SerialSignal_CTS) in line_info()
1187 if (info->signals & SerialSignal_DTR) in line_info()
1189 if (info->signals & SerialSignal_DSR) in line_info()
1191 if (info->signals & SerialSignal_DCD) in line_info()
1193 if (info->signals & SerialSignal_RI) in line_info()
1196 if (info->params.mode != MGSL_MODE_ASYNC) { in line_info()
1198 info->icount.txok, info->icount.rxok); in line_info()
1199 if (info->icount.txunder) in line_info()
1200 seq_printf(m, " txunder:%d", info->icount.txunder); in line_info()
1201 if (info->icount.txabort) in line_info()
1202 seq_printf(m, " txabort:%d", info->icount.txabort); in line_info()
1203 if (info->icount.rxshort) in line_info()
1204 seq_printf(m, " rxshort:%d", info->icount.rxshort); in line_info()
1205 if (info->icount.rxlong) in line_info()
1206 seq_printf(m, " rxlong:%d", info->icount.rxlong); in line_info()
1207 if (info->icount.rxover) in line_info()
1208 seq_printf(m, " rxover:%d", info->icount.rxover); in line_info()
1209 if (info->icount.rxcrc) in line_info()
1210 seq_printf(m, " rxcrc:%d", info->icount.rxcrc); in line_info()
1213 info->icount.tx, info->icount.rx); in line_info()
1214 if (info->icount.frame) in line_info()
1215 seq_printf(m, " fe:%d", info->icount.frame); in line_info()
1216 if (info->icount.parity) in line_info()
1217 seq_printf(m, " pe:%d", info->icount.parity); in line_info()
1218 if (info->icount.brk) in line_info()
1219 seq_printf(m, " brk:%d", info->icount.brk); in line_info()
1220 if (info->icount.overrun) in line_info()
1221 seq_printf(m, " oe:%d", info->icount.overrun); in line_info()
1228 info->tx_active,info->bh_requested,info->bh_running, in line_info()
1229 info->pending_bh); in line_info()
1236 struct slgt_info *info; in synclink_gt_proc_show() local
1240 info = slgt_device_list; in synclink_gt_proc_show()
1241 while( info ) { in synclink_gt_proc_show()
1242 line_info(m, info); in synclink_gt_proc_show()
1243 info = info->next_device; in synclink_gt_proc_show()
1253 struct slgt_info *info = tty->driver_data; in chars_in_buffer() local
1255 if (sanity_check(info, tty->name, "chars_in_buffer")) in chars_in_buffer()
1257 count = tbuf_bytes(info); in chars_in_buffer()
1258 DBGINFO(("%s chars_in_buffer()=%u\n", info->device_name, count)); in chars_in_buffer()
1267 struct slgt_info *info = tty->driver_data; in throttle() local
1270 if (sanity_check(info, tty->name, "throttle")) in throttle()
1272 DBGINFO(("%s throttle\n", info->device_name)); in throttle()
1276 spin_lock_irqsave(&info->lock,flags); in throttle()
1277 info->signals &= ~SerialSignal_RTS; in throttle()
1278 set_gtsignals(info); in throttle()
1279 spin_unlock_irqrestore(&info->lock,flags); in throttle()
1288 struct slgt_info *info = tty->driver_data; in unthrottle() local
1291 if (sanity_check(info, tty->name, "unthrottle")) in unthrottle()
1293 DBGINFO(("%s unthrottle\n", info->device_name)); in unthrottle()
1295 if (info->x_char) in unthrottle()
1296 info->x_char = 0; in unthrottle()
1301 spin_lock_irqsave(&info->lock,flags); in unthrottle()
1302 info->signals |= SerialSignal_RTS; in unthrottle()
1303 set_gtsignals(info); in unthrottle()
1304 spin_unlock_irqrestore(&info->lock,flags); in unthrottle()
1314 struct slgt_info *info = tty->driver_data; in set_break() local
1318 if (sanity_check(info, tty->name, "set_break")) in set_break()
1320 DBGINFO(("%s set_break(%d)\n", info->device_name, break_state)); in set_break()
1322 spin_lock_irqsave(&info->lock,flags); in set_break()
1323 value = rd_reg16(info, TCR); in set_break()
1328 wr_reg16(info, TCR, value); in set_break()
1329 spin_unlock_irqrestore(&info->lock,flags); in set_break()
1348 struct slgt_info *info = dev_to_port(dev); in hdlcdev_attach() local
1353 if (info->port.count) in hdlcdev_attach()
1356 DBGINFO(("%s hdlcdev_attach\n", info->device_name)); in hdlcdev_attach()
1376 info->params.encoding = new_encoding; in hdlcdev_attach()
1377 info->params.crc_type = new_crctype; in hdlcdev_attach()
1380 if (info->netcount) in hdlcdev_attach()
1381 program_hw(info); in hdlcdev_attach()
1394 struct slgt_info *info = dev_to_port(dev); in hdlcdev_xmit() local
1412 spin_lock_irqsave(&info->lock, flags); in hdlcdev_xmit()
1413 tx_load(info, skb->data, skb->len); in hdlcdev_xmit()
1414 spin_unlock_irqrestore(&info->lock, flags); in hdlcdev_xmit()
1432 struct slgt_info *info = dev_to_port(dev); in hdlcdev_open() local
1439 spin_lock_irqsave(&info->netlock, flags); in hdlcdev_open()
1440 if (info->port.count != 0 || info->netcount != 0) { in hdlcdev_open()
1442 spin_unlock_irqrestore(&info->netlock, flags); in hdlcdev_open()
1445 info->netcount=1; in hdlcdev_open()
1446 spin_unlock_irqrestore(&info->netlock, flags); in hdlcdev_open()
1449 if ((rc = startup(info)) != 0) { in hdlcdev_open()
1450 spin_lock_irqsave(&info->netlock, flags); in hdlcdev_open()
1451 info->netcount=0; in hdlcdev_open()
1452 spin_unlock_irqrestore(&info->netlock, flags); in hdlcdev_open()
1459 shutdown(info); in hdlcdev_open()
1460 spin_lock_irqsave(&info->netlock, flags); in hdlcdev_open()
1461 info->netcount = 0; in hdlcdev_open()
1462 spin_unlock_irqrestore(&info->netlock, flags); in hdlcdev_open()
1467 info->signals |= SerialSignal_RTS | SerialSignal_DTR; in hdlcdev_open()
1468 program_hw(info); in hdlcdev_open()
1475 spin_lock_irqsave(&info->lock, flags); in hdlcdev_open()
1476 get_gtsignals(info); in hdlcdev_open()
1477 spin_unlock_irqrestore(&info->lock, flags); in hdlcdev_open()
1478 if (info->signals & SerialSignal_DCD) in hdlcdev_open()
1495 struct slgt_info *info = dev_to_port(dev); in hdlcdev_close() local
1503 shutdown(info); in hdlcdev_close()
1507 spin_lock_irqsave(&info->netlock, flags); in hdlcdev_close()
1508 info->netcount=0; in hdlcdev_close()
1509 spin_unlock_irqrestore(&info->netlock, flags); in hdlcdev_close()
1527 struct slgt_info *info = dev_to_port(dev); in hdlcdev_ioctl() local
1533 if (info->port.count) in hdlcdev_ioctl()
1547 flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | in hdlcdev_ioctl()
1560 new_line.clock_rate = info->params.clock_speed; in hdlcdev_ioctl()
1561 new_line.loopback = info->params.loopback ? 1:0; in hdlcdev_ioctl()
1580 case CLOCK_DEFAULT: flags = info->params.flags & in hdlcdev_ioctl()
1591 info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | in hdlcdev_ioctl()
1595 info->params.flags |= flags; in hdlcdev_ioctl()
1597 info->params.loopback = new_line.loopback; in hdlcdev_ioctl()
1600 info->params.clock_speed = new_line.clock_rate; in hdlcdev_ioctl()
1602 info->params.clock_speed = 0; in hdlcdev_ioctl()
1605 if (info->netcount) in hdlcdev_ioctl()
1606 program_hw(info); in hdlcdev_ioctl()
1621 struct slgt_info *info = dev_to_port(dev); in hdlcdev_tx_timeout() local
1629 spin_lock_irqsave(&info->lock,flags); in hdlcdev_tx_timeout()
1630 tx_stop(info); in hdlcdev_tx_timeout()
1631 spin_unlock_irqrestore(&info->lock,flags); in hdlcdev_tx_timeout()
1642 static void hdlcdev_tx_done(struct slgt_info *info) in hdlcdev_tx_done() argument
1644 if (netif_queue_stopped(info->netdev)) in hdlcdev_tx_done()
1645 netif_wake_queue(info->netdev); in hdlcdev_tx_done()
1656 static void hdlcdev_rx(struct slgt_info *info, char *buf, int size) in hdlcdev_rx() argument
1659 struct net_device *dev = info->netdev; in hdlcdev_rx()
1695 static int hdlcdev_init(struct slgt_info *info) in hdlcdev_init() argument
1703 dev = alloc_hdlcdev(info); in hdlcdev_init()
1705 printk(KERN_ERR "%s hdlc device alloc failure\n", info->device_name); in hdlcdev_init()
1710 dev->mem_start = info->phys_reg_addr; in hdlcdev_init()
1711 dev->mem_end = info->phys_reg_addr + SLGT_REG_SIZE - 1; in hdlcdev_init()
1712 dev->irq = info->irq_level; in hdlcdev_init()
1732 info->netdev = dev; in hdlcdev_init()
1742 static void hdlcdev_exit(struct slgt_info *info) in hdlcdev_exit() argument
1744 if (!info->netdev) in hdlcdev_exit()
1746 unregister_hdlc_device(info->netdev); in hdlcdev_exit()
1747 free_netdev(info->netdev); in hdlcdev_exit()
1748 info->netdev = NULL; in hdlcdev_exit()
1756 static void rx_async(struct slgt_info *info) in rx_async() argument
1758 struct mgsl_icount *icount = &info->icount; in rx_async()
1762 struct slgt_desc *bufs = info->rbufs; in rx_async()
1768 start = end = info->rbuf_current; in rx_async()
1771 count = desc_count(bufs[end]) - info->rbuf_index; in rx_async()
1772 p = bufs[end].buf + info->rbuf_index; in rx_async()
1774 DBGISR(("%s rx_async count=%d\n", info->device_name, count)); in rx_async()
1775 DBGDATA(info, p, count, "rx"); in rx_async()
1790 if (status & info->ignore_status_mask) in rx_async()
1797 tty_insert_flip_char(&info->port, ch, stat); in rx_async()
1803 info->rbuf_index += i; in rx_async()
1804 mod_timer(&info->rx_timer, jiffies + 1); in rx_async()
1808 info->rbuf_index = 0; in rx_async()
1809 free_rbufs(info, end, end); in rx_async()
1811 if (++end == info->rbuf_count) in rx_async()
1820 tty_flip_buffer_push(&info->port); in rx_async()
1826 static int bh_action(struct slgt_info *info) in bh_action() argument
1831 spin_lock_irqsave(&info->lock,flags); in bh_action()
1833 if (info->pending_bh & BH_RECEIVE) { in bh_action()
1834 info->pending_bh &= ~BH_RECEIVE; in bh_action()
1836 } else if (info->pending_bh & BH_TRANSMIT) { in bh_action()
1837 info->pending_bh &= ~BH_TRANSMIT; in bh_action()
1839 } else if (info->pending_bh & BH_STATUS) { in bh_action()
1840 info->pending_bh &= ~BH_STATUS; in bh_action()
1844 info->bh_running = false; in bh_action()
1845 info->bh_requested = false; in bh_action()
1849 spin_unlock_irqrestore(&info->lock,flags); in bh_action()
1859 struct slgt_info *info = container_of(work, struct slgt_info, task); in bh_handler() local
1862 info->bh_running = true; in bh_handler()
1864 while((action = bh_action(info))) { in bh_handler()
1867 DBGBH(("%s bh receive\n", info->device_name)); in bh_handler()
1868 switch(info->params.mode) { in bh_handler()
1870 rx_async(info); in bh_handler()
1873 while(rx_get_frame(info)); in bh_handler()
1879 while(rx_get_buf(info)); in bh_handler()
1883 if (info->rx_restart) in bh_handler()
1884 rx_start(info); in bh_handler()
1887 bh_transmit(info); in bh_handler()
1890 DBGBH(("%s bh status\n", info->device_name)); in bh_handler()
1891 info->ri_chkcount = 0; in bh_handler()
1892 info->dsr_chkcount = 0; in bh_handler()
1893 info->dcd_chkcount = 0; in bh_handler()
1894 info->cts_chkcount = 0; in bh_handler()
1897 DBGBH(("%s unknown action\n", info->device_name)); in bh_handler()
1901 DBGBH(("%s bh_handler exit\n", info->device_name)); in bh_handler()
1904 static void bh_transmit(struct slgt_info *info) in bh_transmit() argument
1906 struct tty_struct *tty = info->port.tty; in bh_transmit()
1908 DBGBH(("%s bh_transmit\n", info->device_name)); in bh_transmit()
1913 static void dsr_change(struct slgt_info *info, unsigned short status) in dsr_change() argument
1916 info->signals |= SerialSignal_DSR; in dsr_change()
1917 info->input_signal_events.dsr_up++; in dsr_change()
1919 info->signals &= ~SerialSignal_DSR; in dsr_change()
1920 info->input_signal_events.dsr_down++; in dsr_change()
1922 DBGISR(("dsr_change %s signals=%04X\n", info->device_name, info->signals)); in dsr_change()
1923 if ((info->dsr_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { in dsr_change()
1924 slgt_irq_off(info, IRQ_DSR); in dsr_change()
1927 info->icount.dsr++; in dsr_change()
1928 wake_up_interruptible(&info->status_event_wait_q); in dsr_change()
1929 wake_up_interruptible(&info->event_wait_q); in dsr_change()
1930 info->pending_bh |= BH_STATUS; in dsr_change()
1933 static void cts_change(struct slgt_info *info, unsigned short status) in cts_change() argument
1936 info->signals |= SerialSignal_CTS; in cts_change()
1937 info->input_signal_events.cts_up++; in cts_change()
1939 info->signals &= ~SerialSignal_CTS; in cts_change()
1940 info->input_signal_events.cts_down++; in cts_change()
1942 DBGISR(("cts_change %s signals=%04X\n", info->device_name, info->signals)); in cts_change()
1943 if ((info->cts_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { in cts_change()
1944 slgt_irq_off(info, IRQ_CTS); in cts_change()
1947 info->icount.cts++; in cts_change()
1948 wake_up_interruptible(&info->status_event_wait_q); in cts_change()
1949 wake_up_interruptible(&info->event_wait_q); in cts_change()
1950 info->pending_bh |= BH_STATUS; in cts_change()
1952 if (tty_port_cts_enabled(&info->port)) { in cts_change()
1953 if (info->port.tty) { in cts_change()
1954 if (info->port.tty->hw_stopped) { in cts_change()
1955 if (info->signals & SerialSignal_CTS) { in cts_change()
1956 info->port.tty->hw_stopped = 0; in cts_change()
1957 info->pending_bh |= BH_TRANSMIT; in cts_change()
1961 if (!(info->signals & SerialSignal_CTS)) in cts_change()
1962 info->port.tty->hw_stopped = 1; in cts_change()
1968 static void dcd_change(struct slgt_info *info, unsigned short status) in dcd_change() argument
1971 info->signals |= SerialSignal_DCD; in dcd_change()
1972 info->input_signal_events.dcd_up++; in dcd_change()
1974 info->signals &= ~SerialSignal_DCD; in dcd_change()
1975 info->input_signal_events.dcd_down++; in dcd_change()
1977 DBGISR(("dcd_change %s signals=%04X\n", info->device_name, info->signals)); in dcd_change()
1978 if ((info->dcd_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { in dcd_change()
1979 slgt_irq_off(info, IRQ_DCD); in dcd_change()
1982 info->icount.dcd++; in dcd_change()
1984 if (info->netcount) { in dcd_change()
1985 if (info->signals & SerialSignal_DCD) in dcd_change()
1986 netif_carrier_on(info->netdev); in dcd_change()
1988 netif_carrier_off(info->netdev); in dcd_change()
1991 wake_up_interruptible(&info->status_event_wait_q); in dcd_change()
1992 wake_up_interruptible(&info->event_wait_q); in dcd_change()
1993 info->pending_bh |= BH_STATUS; in dcd_change()
1995 if (tty_port_check_carrier(&info->port)) { in dcd_change()
1996 if (info->signals & SerialSignal_DCD) in dcd_change()
1997 wake_up_interruptible(&info->port.open_wait); in dcd_change()
1999 if (info->port.tty) in dcd_change()
2000 tty_hangup(info->port.tty); in dcd_change()
2005 static void ri_change(struct slgt_info *info, unsigned short status) in ri_change() argument
2008 info->signals |= SerialSignal_RI; in ri_change()
2009 info->input_signal_events.ri_up++; in ri_change()
2011 info->signals &= ~SerialSignal_RI; in ri_change()
2012 info->input_signal_events.ri_down++; in ri_change()
2014 DBGISR(("ri_change %s signals=%04X\n", info->device_name, info->signals)); in ri_change()
2015 if ((info->ri_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { in ri_change()
2016 slgt_irq_off(info, IRQ_RI); in ri_change()
2019 info->icount.rng++; in ri_change()
2020 wake_up_interruptible(&info->status_event_wait_q); in ri_change()
2021 wake_up_interruptible(&info->event_wait_q); in ri_change()
2022 info->pending_bh |= BH_STATUS; in ri_change()
2025 static void isr_rxdata(struct slgt_info *info) in isr_rxdata() argument
2027 unsigned int count = info->rbuf_fill_count; in isr_rxdata()
2028 unsigned int i = info->rbuf_fill_index; in isr_rxdata()
2031 while (rd_reg16(info, SSR) & IRQ_RXDATA) { in isr_rxdata()
2032 reg = rd_reg16(info, RDR); in isr_rxdata()
2033 DBGISR(("isr_rxdata %s RDR=%04X\n", info->device_name, reg)); in isr_rxdata()
2034 if (desc_complete(info->rbufs[i])) { in isr_rxdata()
2036 rx_stop(info); in isr_rxdata()
2037 info->rx_restart = true; in isr_rxdata()
2040 info->rbufs[i].buf[count++] = (unsigned char)reg; in isr_rxdata()
2042 if (info->params.mode == MGSL_MODE_ASYNC) in isr_rxdata()
2043 info->rbufs[i].buf[count++] = (unsigned char)(reg >> 8); in isr_rxdata()
2044 if (count == info->rbuf_fill_level || (reg & BIT10)) { in isr_rxdata()
2046 set_desc_count(info->rbufs[i], count); in isr_rxdata()
2047 set_desc_status(info->rbufs[i], BIT15 | (reg >> 8)); in isr_rxdata()
2048 info->rbuf_fill_count = count = 0; in isr_rxdata()
2049 if (++i == info->rbuf_count) in isr_rxdata()
2051 info->pending_bh |= BH_RECEIVE; in isr_rxdata()
2055 info->rbuf_fill_index = i; in isr_rxdata()
2056 info->rbuf_fill_count = count; in isr_rxdata()
2059 static void isr_serial(struct slgt_info *info) in isr_serial() argument
2061 unsigned short status = rd_reg16(info, SSR); in isr_serial()
2063 DBGISR(("%s isr_serial status=%04X\n", info->device_name, status)); in isr_serial()
2065 wr_reg16(info, SSR, status); /* clear pending */ in isr_serial()
2067 info->irq_occurred = true; in isr_serial()
2069 if (info->params.mode == MGSL_MODE_ASYNC) { in isr_serial()
2071 if (info->tx_active) in isr_serial()
2072 isr_txeom(info, status); in isr_serial()
2074 if (info->rx_pio && (status & IRQ_RXDATA)) in isr_serial()
2075 isr_rxdata(info); in isr_serial()
2077 info->icount.brk++; in isr_serial()
2079 if (info->port.tty) { in isr_serial()
2080 if (!(status & info->ignore_status_mask)) { in isr_serial()
2081 if (info->read_status_mask & MASK_BREAK) { in isr_serial()
2082 tty_insert_flip_char(&info->port, 0, TTY_BREAK); in isr_serial()
2083 if (info->port.flags & ASYNC_SAK) in isr_serial()
2084 do_SAK(info->port.tty); in isr_serial()
2091 isr_txeom(info, status); in isr_serial()
2092 if (info->rx_pio && (status & IRQ_RXDATA)) in isr_serial()
2093 isr_rxdata(info); in isr_serial()
2096 info->icount.rxidle++; in isr_serial()
2098 info->icount.exithunt++; in isr_serial()
2099 wake_up_interruptible(&info->event_wait_q); in isr_serial()
2103 rx_start(info); in isr_serial()
2107 dsr_change(info, status); in isr_serial()
2109 cts_change(info, status); in isr_serial()
2111 dcd_change(info, status); in isr_serial()
2113 ri_change(info, status); in isr_serial()
2116 static void isr_rdma(struct slgt_info *info) in isr_rdma() argument
2118 unsigned int status = rd_reg32(info, RDCSR); in isr_rdma()
2120 DBGISR(("%s isr_rdma status=%08x\n", info->device_name, status)); in isr_rdma()
2133 wr_reg32(info, RDCSR, status); /* clear pending */ in isr_rdma()
2136 DBGISR(("%s isr_rdma rx_restart=1\n", info->device_name)); in isr_rdma()
2137 info->rx_restart = true; in isr_rdma()
2139 info->pending_bh |= BH_RECEIVE; in isr_rdma()
2142 static void isr_tdma(struct slgt_info *info) in isr_tdma() argument
2144 unsigned int status = rd_reg32(info, TDCSR); in isr_tdma()
2146 DBGISR(("%s isr_tdma status=%08x\n", info->device_name, status)); in isr_tdma()
2158 wr_reg32(info, TDCSR, status); /* clear pending */ in isr_tdma()
2163 info->pending_bh |= BH_TRANSMIT; in isr_tdma()
2173 static bool unsent_tbufs(struct slgt_info *info) in unsent_tbufs() argument
2175 unsigned int i = info->tbuf_current; in unsent_tbufs()
2187 i = info->tbuf_count - 1; in unsent_tbufs()
2188 if (!desc_count(info->tbufs[i])) in unsent_tbufs()
2190 info->tbuf_start = i; in unsent_tbufs()
2192 } while (i != info->tbuf_current); in unsent_tbufs()
2197 static void isr_txeom(struct slgt_info *info, unsigned short status) in isr_txeom() argument
2199 DBGISR(("%s txeom status=%04x\n", info->device_name, status)); in isr_txeom()
2201 slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER); in isr_txeom()
2202 tdma_reset(info); in isr_txeom()
2204 unsigned short val = rd_reg16(info, TCR); in isr_txeom()
2205 wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */ in isr_txeom()
2206 wr_reg16(info, TCR, val); /* clear reset bit */ in isr_txeom()
2209 if (info->tx_active) { in isr_txeom()
2210 if (info->params.mode != MGSL_MODE_ASYNC) { in isr_txeom()
2212 info->icount.txunder++; in isr_txeom()
2214 info->icount.txok++; in isr_txeom()
2217 if (unsent_tbufs(info)) { in isr_txeom()
2218 tx_start(info); in isr_txeom()
2219 update_tx_timer(info); in isr_txeom()
2222 info->tx_active = false; in isr_txeom()
2224 del_timer(&info->tx_timer); in isr_txeom()
2226 if (info->params.mode != MGSL_MODE_ASYNC && info->drop_rts_on_tx_done) { in isr_txeom()
2227 info->signals &= ~SerialSignal_RTS; in isr_txeom()
2228 info->drop_rts_on_tx_done = false; in isr_txeom()
2229 set_gtsignals(info); in isr_txeom()
2233 if (info->netcount) in isr_txeom()
2234 hdlcdev_tx_done(info); in isr_txeom()
2238 if (info->port.tty && (info->port.tty->flow.stopped || info->port.tty->hw_stopped)) { in isr_txeom()
2239 tx_stop(info); in isr_txeom()
2242 info->pending_bh |= BH_TRANSMIT; in isr_txeom()
2247 static void isr_gpio(struct slgt_info *info, unsigned int changed, unsigned int state) in isr_gpio() argument
2252 for (w = info->gpio_wait_q, prev = NULL ; w != NULL ; w = w->next) { in isr_gpio()
2259 info->gpio_wait_q = w->next; in isr_gpio()
2272 struct slgt_info *info = dev_id; in slgt_interrupt() local
2276 DBGISR(("slgt_interrupt irq=%d entry\n", info->irq_level)); in slgt_interrupt()
2278 while((gsr = rd_reg32(info, GSR) & 0xffffff00)) { in slgt_interrupt()
2279 DBGISR(("%s gsr=%08x\n", info->device_name, gsr)); in slgt_interrupt()
2280 info->irq_occurred = true; in slgt_interrupt()
2281 for(i=0; i < info->port_count ; i++) { in slgt_interrupt()
2282 if (info->port_array[i] == NULL) in slgt_interrupt()
2284 spin_lock(&info->port_array[i]->lock); in slgt_interrupt()
2286 isr_serial(info->port_array[i]); in slgt_interrupt()
2288 isr_rdma(info->port_array[i]); in slgt_interrupt()
2290 isr_tdma(info->port_array[i]); in slgt_interrupt()
2291 spin_unlock(&info->port_array[i]->lock); in slgt_interrupt()
2295 if (info->gpio_present) { in slgt_interrupt()
2298 spin_lock(&info->lock); in slgt_interrupt()
2299 while ((changed = rd_reg32(info, IOSR)) != 0) { in slgt_interrupt()
2300 DBGISR(("%s iosr=%08x\n", info->device_name, changed)); in slgt_interrupt()
2302 state = rd_reg32(info, IOVR); in slgt_interrupt()
2304 wr_reg32(info, IOSR, changed); in slgt_interrupt()
2305 for (i=0 ; i < info->port_count ; i++) { in slgt_interrupt()
2306 if (info->port_array[i] != NULL) in slgt_interrupt()
2307 isr_gpio(info->port_array[i], changed, state); in slgt_interrupt()
2310 spin_unlock(&info->lock); in slgt_interrupt()
2313 for(i=0; i < info->port_count ; i++) { in slgt_interrupt()
2314 struct slgt_info *port = info->port_array[i]; in slgt_interrupt()
2328 DBGISR(("slgt_interrupt irq=%d exit\n", info->irq_level)); in slgt_interrupt()
2332 static int startup(struct slgt_info *info) in startup() argument
2334 DBGINFO(("%s startup\n", info->device_name)); in startup()
2336 if (tty_port_initialized(&info->port)) in startup()
2339 if (!info->tx_buf) { in startup()
2340 info->tx_buf = kmalloc(info->max_frame_size, GFP_KERNEL); in startup()
2341 if (!info->tx_buf) { in startup()
2342 DBGERR(("%s can't allocate tx buffer\n", info->device_name)); in startup()
2347 info->pending_bh = 0; in startup()
2349 memset(&info->icount, 0, sizeof(info->icount)); in startup()
2352 change_params(info); in startup()
2354 if (info->port.tty) in startup()
2355 clear_bit(TTY_IO_ERROR, &info->port.tty->flags); in startup()
2357 tty_port_set_initialized(&info->port, true); in startup()
2365 static void shutdown(struct slgt_info *info) in shutdown() argument
2369 if (!tty_port_initialized(&info->port)) in shutdown()
2372 DBGINFO(("%s shutdown\n", info->device_name)); in shutdown()
2376 wake_up_interruptible(&info->status_event_wait_q); in shutdown()
2377 wake_up_interruptible(&info->event_wait_q); in shutdown()
2379 del_timer_sync(&info->tx_timer); in shutdown()
2380 del_timer_sync(&info->rx_timer); in shutdown()
2382 kfree(info->tx_buf); in shutdown()
2383 info->tx_buf = NULL; in shutdown()
2385 spin_lock_irqsave(&info->lock,flags); in shutdown()
2387 tx_stop(info); in shutdown()
2388 rx_stop(info); in shutdown()
2390 slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); in shutdown()
2392 if (!info->port.tty || info->port.tty->termios.c_cflag & HUPCL) { in shutdown()
2393 info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR); in shutdown()
2394 set_gtsignals(info); in shutdown()
2397 flush_cond_wait(&info->gpio_wait_q); in shutdown()
2399 spin_unlock_irqrestore(&info->lock,flags); in shutdown()
2401 if (info->port.tty) in shutdown()
2402 set_bit(TTY_IO_ERROR, &info->port.tty->flags); in shutdown()
2404 tty_port_set_initialized(&info->port, false); in shutdown()
2407 static void program_hw(struct slgt_info *info) in program_hw() argument
2411 spin_lock_irqsave(&info->lock,flags); in program_hw()
2413 rx_stop(info); in program_hw()
2414 tx_stop(info); in program_hw()
2416 if (info->params.mode != MGSL_MODE_ASYNC || in program_hw()
2417 info->netcount) in program_hw()
2418 sync_mode(info); in program_hw()
2420 async_mode(info); in program_hw()
2422 set_gtsignals(info); in program_hw()
2424 info->dcd_chkcount = 0; in program_hw()
2425 info->cts_chkcount = 0; in program_hw()
2426 info->ri_chkcount = 0; in program_hw()
2427 info->dsr_chkcount = 0; in program_hw()
2429 slgt_irq_on(info, IRQ_DCD | IRQ_CTS | IRQ_DSR | IRQ_RI); in program_hw()
2430 get_gtsignals(info); in program_hw()
2432 if (info->netcount || in program_hw()
2433 (info->port.tty && info->port.tty->termios.c_cflag & CREAD)) in program_hw()
2434 rx_start(info); in program_hw()
2436 spin_unlock_irqrestore(&info->lock,flags); in program_hw()
2442 static void change_params(struct slgt_info *info) in change_params() argument
2447 if (!info->port.tty) in change_params()
2449 DBGINFO(("%s change_params\n", info->device_name)); in change_params()
2451 cflag = info->port.tty->termios.c_cflag; in change_params()
2456 info->signals |= SerialSignal_RTS | SerialSignal_DTR; in change_params()
2458 info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR); in change_params()
2462 info->params.data_bits = tty_get_char_size(cflag); in change_params()
2463 info->params.stop_bits = (cflag & CSTOPB) ? 2 : 1; in change_params()
2466 info->params.parity = (cflag & PARODD) ? ASYNC_PARITY_ODD : ASYNC_PARITY_EVEN; in change_params()
2468 info->params.parity = ASYNC_PARITY_NONE; in change_params()
2473 bits_per_char = info->params.data_bits + in change_params()
2474 info->params.stop_bits + 1; in change_params()
2476 info->params.data_rate = tty_get_baud_rate(info->port.tty); in change_params()
2478 if (info->params.data_rate) { in change_params()
2479 info->timeout = (32*HZ*bits_per_char) / in change_params()
2480 info->params.data_rate; in change_params()
2482 info->timeout += HZ/50; /* Add .02 seconds of slop */ in change_params()
2484 tty_port_set_cts_flow(&info->port, cflag & CRTSCTS); in change_params()
2485 tty_port_set_check_carrier(&info->port, ~cflag & CLOCAL); in change_params()
2489 info->read_status_mask = IRQ_RXOVER; in change_params()
2490 if (I_INPCK(info->port.tty)) in change_params()
2491 info->read_status_mask |= MASK_PARITY | MASK_FRAMING; in change_params()
2492 if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty)) in change_params()
2493 info->read_status_mask |= MASK_BREAK; in change_params()
2494 if (I_IGNPAR(info->port.tty)) in change_params()
2495 info->ignore_status_mask |= MASK_PARITY | MASK_FRAMING; in change_params()
2496 if (I_IGNBRK(info->port.tty)) { in change_params()
2497 info->ignore_status_mask |= MASK_BREAK; in change_params()
2501 if (I_IGNPAR(info->port.tty)) in change_params()
2502 info->ignore_status_mask |= MASK_OVERRUN; in change_params()
2505 program_hw(info); in change_params()
2508 static int get_stats(struct slgt_info *info, struct mgsl_icount __user *user_icount) in get_stats() argument
2510 DBGINFO(("%s get_stats\n", info->device_name)); in get_stats()
2512 memset(&info->icount, 0, sizeof(info->icount)); in get_stats()
2514 if (copy_to_user(user_icount, &info->icount, sizeof(struct mgsl_icount))) in get_stats()
2520 static int get_params(struct slgt_info *info, MGSL_PARAMS __user *user_params) in get_params() argument
2522 DBGINFO(("%s get_params\n", info->device_name)); in get_params()
2523 if (copy_to_user(user_params, &info->params, sizeof(MGSL_PARAMS))) in get_params()
2528 static int set_params(struct slgt_info *info, MGSL_PARAMS __user *new_params) in set_params() argument
2533 DBGINFO(("%s set_params\n", info->device_name)); in set_params()
2537 spin_lock_irqsave(&info->lock, flags); in set_params()
2539 info->base_clock = tmp_params.clock_speed; in set_params()
2541 memcpy(&info->params, &tmp_params, sizeof(MGSL_PARAMS)); in set_params()
2542 spin_unlock_irqrestore(&info->lock, flags); in set_params()
2544 program_hw(info); in set_params()
2549 static int get_txidle(struct slgt_info *info, int __user *idle_mode) in get_txidle() argument
2551 DBGINFO(("%s get_txidle=%d\n", info->device_name, info->idle_mode)); in get_txidle()
2552 if (put_user(info->idle_mode, idle_mode)) in get_txidle()
2557 static int set_txidle(struct slgt_info *info, int idle_mode) in set_txidle() argument
2560 DBGINFO(("%s set_txidle(%d)\n", info->device_name, idle_mode)); in set_txidle()
2561 spin_lock_irqsave(&info->lock,flags); in set_txidle()
2562 info->idle_mode = idle_mode; in set_txidle()
2563 if (info->params.mode != MGSL_MODE_ASYNC) in set_txidle()
2564 tx_set_idle(info); in set_txidle()
2565 spin_unlock_irqrestore(&info->lock,flags); in set_txidle()
2569 static int tx_enable(struct slgt_info *info, int enable) in tx_enable() argument
2572 DBGINFO(("%s tx_enable(%d)\n", info->device_name, enable)); in tx_enable()
2573 spin_lock_irqsave(&info->lock,flags); in tx_enable()
2575 if (!info->tx_enabled) in tx_enable()
2576 tx_start(info); in tx_enable()
2578 if (info->tx_enabled) in tx_enable()
2579 tx_stop(info); in tx_enable()
2581 spin_unlock_irqrestore(&info->lock,flags); in tx_enable()
2588 static int tx_abort(struct slgt_info *info) in tx_abort() argument
2591 DBGINFO(("%s tx_abort\n", info->device_name)); in tx_abort()
2592 spin_lock_irqsave(&info->lock,flags); in tx_abort()
2593 tdma_reset(info); in tx_abort()
2594 spin_unlock_irqrestore(&info->lock,flags); in tx_abort()
2598 static int rx_enable(struct slgt_info *info, int enable) in rx_enable() argument
2602 DBGINFO(("%s rx_enable(%08x)\n", info->device_name, enable)); in rx_enable()
2603 spin_lock_irqsave(&info->lock,flags); in rx_enable()
2612 spin_unlock_irqrestore(&info->lock, flags); in rx_enable()
2615 info->rbuf_fill_level = rbuf_fill_level; in rx_enable()
2617 info->rx_pio = 1; /* PIO mode */ in rx_enable()
2619 info->rx_pio = 0; /* DMA mode */ in rx_enable()
2620 rx_stop(info); /* restart receiver to use new fill level */ in rx_enable()
2631 if (!info->rx_enabled) in rx_enable()
2632 rx_start(info); in rx_enable()
2635 wr_reg16(info, RCR, rd_reg16(info, RCR) | BIT3); in rx_enable()
2638 if (info->rx_enabled) in rx_enable()
2639 rx_stop(info); in rx_enable()
2641 spin_unlock_irqrestore(&info->lock,flags); in rx_enable()
2648 static int wait_mgsl_event(struct slgt_info *info, int __user *mask_ptr) in wait_mgsl_event() argument
2662 DBGINFO(("%s wait_mgsl_event(%d)\n", info->device_name, mask)); in wait_mgsl_event()
2664 spin_lock_irqsave(&info->lock,flags); in wait_mgsl_event()
2667 get_gtsignals(info); in wait_mgsl_event()
2668 s = info->signals; in wait_mgsl_event()
2676 spin_unlock_irqrestore(&info->lock,flags); in wait_mgsl_event()
2681 cprev = info->icount; in wait_mgsl_event()
2682 oldsigs = info->input_signal_events; in wait_mgsl_event()
2686 unsigned short val = rd_reg16(info, SCR); in wait_mgsl_event()
2688 wr_reg16(info, SCR, (unsigned short)(val | IRQ_RXIDLE)); in wait_mgsl_event()
2692 add_wait_queue(&info->event_wait_q, &wait); in wait_mgsl_event()
2694 spin_unlock_irqrestore(&info->lock,flags); in wait_mgsl_event()
2704 spin_lock_irqsave(&info->lock,flags); in wait_mgsl_event()
2705 cnow = info->icount; in wait_mgsl_event()
2706 newsigs = info->input_signal_events; in wait_mgsl_event()
2708 spin_unlock_irqrestore(&info->lock,flags); in wait_mgsl_event()
2743 remove_wait_queue(&info->event_wait_q, &wait); in wait_mgsl_event()
2748 spin_lock_irqsave(&info->lock,flags); in wait_mgsl_event()
2749 if (!waitqueue_active(&info->event_wait_q)) { in wait_mgsl_event()
2751 wr_reg16(info, SCR, in wait_mgsl_event()
2752 (unsigned short)(rd_reg16(info, SCR) & ~IRQ_RXIDLE)); in wait_mgsl_event()
2754 spin_unlock_irqrestore(&info->lock,flags); in wait_mgsl_event()
2762 static int get_interface(struct slgt_info *info, int __user *if_mode) in get_interface() argument
2764 DBGINFO(("%s get_interface=%x\n", info->device_name, info->if_mode)); in get_interface()
2765 if (put_user(info->if_mode, if_mode)) in get_interface()
2770 static int set_interface(struct slgt_info *info, int if_mode) in set_interface() argument
2775 DBGINFO(("%s set_interface=%x)\n", info->device_name, if_mode)); in set_interface()
2776 spin_lock_irqsave(&info->lock,flags); in set_interface()
2777 info->if_mode = if_mode; in set_interface()
2779 msc_set_vcr(info); in set_interface()
2782 val = rd_reg16(info, TCR); in set_interface()
2783 if (info->if_mode & MGSL_INTERFACE_RTS_EN) in set_interface()
2787 wr_reg16(info, TCR, val); in set_interface()
2789 spin_unlock_irqrestore(&info->lock,flags); in set_interface()
2793 static int get_xsync(struct slgt_info *info, int __user *xsync) in get_xsync() argument
2795 DBGINFO(("%s get_xsync=%x\n", info->device_name, info->xsync)); in get_xsync()
2796 if (put_user(info->xsync, xsync)) in get_xsync()
2807 static int set_xsync(struct slgt_info *info, int xsync) in set_xsync() argument
2811 DBGINFO(("%s set_xsync=%x)\n", info->device_name, xsync)); in set_xsync()
2812 spin_lock_irqsave(&info->lock, flags); in set_xsync()
2813 info->xsync = xsync; in set_xsync()
2814 wr_reg32(info, XSR, xsync); in set_xsync()
2815 spin_unlock_irqrestore(&info->lock, flags); in set_xsync()
2819 static int get_xctrl(struct slgt_info *info, int __user *xctrl) in get_xctrl() argument
2821 DBGINFO(("%s get_xctrl=%x\n", info->device_name, info->xctrl)); in get_xctrl()
2822 if (put_user(info->xctrl, xctrl)) in get_xctrl()
2844 static int set_xctrl(struct slgt_info *info, int xctrl) in set_xctrl() argument
2848 DBGINFO(("%s set_xctrl=%x)\n", info->device_name, xctrl)); in set_xctrl()
2849 spin_lock_irqsave(&info->lock, flags); in set_xctrl()
2850 info->xctrl = xctrl; in set_xctrl()
2851 wr_reg32(info, XCR, xctrl); in set_xctrl()
2852 spin_unlock_irqrestore(&info->lock, flags); in set_xctrl()
2865 static int set_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) in set_gpio() argument
2871 if (!info->gpio_present) in set_gpio()
2876 info->device_name, gpio.state, gpio.smask, in set_gpio()
2879 spin_lock_irqsave(&info->port_array[0]->lock, flags); in set_gpio()
2881 data = rd_reg32(info, IODR); in set_gpio()
2884 wr_reg32(info, IODR, data); in set_gpio()
2887 data = rd_reg32(info, IOVR); in set_gpio()
2890 wr_reg32(info, IOVR, data); in set_gpio()
2892 spin_unlock_irqrestore(&info->port_array[0]->lock, flags); in set_gpio()
2900 static int get_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) in get_gpio() argument
2903 if (!info->gpio_present) in get_gpio()
2905 gpio.state = rd_reg32(info, IOVR); in get_gpio()
2907 gpio.dir = rd_reg32(info, IODR); in get_gpio()
2912 info->device_name, gpio.state, gpio.dir)); in get_gpio()
2974 static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) in wait_gpio() argument
2982 if (!info->gpio_present) in wait_gpio()
2987 info->device_name, gpio.state, gpio.smask)); in wait_gpio()
2989 if ((gpio.smask &= ~rd_reg32(info, IODR)) == 0) in wait_gpio()
2993 spin_lock_irqsave(&info->port_array[0]->lock, flags); in wait_gpio()
2995 wr_reg32(info, IOER, rd_reg32(info, IOER) | gpio.smask); in wait_gpio()
2997 state = rd_reg32(info, IOVR); in wait_gpio()
3004 add_cond_wait(&info->gpio_wait_q, &wait); in wait_gpio()
3005 spin_unlock_irqrestore(&info->port_array[0]->lock, flags); in wait_gpio()
3011 spin_lock_irqsave(&info->port_array[0]->lock, flags); in wait_gpio()
3012 remove_cond_wait(&info->gpio_wait_q, &wait); in wait_gpio()
3016 if (info->gpio_wait_q == NULL) in wait_gpio()
3017 wr_reg32(info, IOER, 0); in wait_gpio()
3018 spin_unlock_irqrestore(&info->port_array[0]->lock, flags); in wait_gpio()
3025 static int modem_input_wait(struct slgt_info *info,int arg) in modem_input_wait() argument
3033 spin_lock_irqsave(&info->lock,flags); in modem_input_wait()
3034 cprev = info->icount; in modem_input_wait()
3035 add_wait_queue(&info->status_event_wait_q, &wait); in modem_input_wait()
3037 spin_unlock_irqrestore(&info->lock,flags); in modem_input_wait()
3047 spin_lock_irqsave(&info->lock,flags); in modem_input_wait()
3048 cnow = info->icount; in modem_input_wait()
3050 spin_unlock_irqrestore(&info->lock,flags); in modem_input_wait()
3070 remove_wait_queue(&info->status_event_wait_q, &wait); in modem_input_wait()
3080 struct slgt_info *info = tty->driver_data; in tiocmget() local
3084 spin_lock_irqsave(&info->lock,flags); in tiocmget()
3085 get_gtsignals(info); in tiocmget()
3086 spin_unlock_irqrestore(&info->lock,flags); in tiocmget()
3088 result = ((info->signals & SerialSignal_RTS) ? TIOCM_RTS:0) + in tiocmget()
3089 ((info->signals & SerialSignal_DTR) ? TIOCM_DTR:0) + in tiocmget()
3090 ((info->signals & SerialSignal_DCD) ? TIOCM_CAR:0) + in tiocmget()
3091 ((info->signals & SerialSignal_RI) ? TIOCM_RNG:0) + in tiocmget()
3092 ((info->signals & SerialSignal_DSR) ? TIOCM_DSR:0) + in tiocmget()
3093 ((info->signals & SerialSignal_CTS) ? TIOCM_CTS:0); in tiocmget()
3095 DBGINFO(("%s tiocmget value=%08X\n", info->device_name, result)); in tiocmget()
3109 struct slgt_info *info = tty->driver_data; in tiocmset() local
3112 DBGINFO(("%s tiocmset(%x,%x)\n", info->device_name, set, clear)); in tiocmset()
3115 info->signals |= SerialSignal_RTS; in tiocmset()
3117 info->signals |= SerialSignal_DTR; in tiocmset()
3119 info->signals &= ~SerialSignal_RTS; in tiocmset()
3121 info->signals &= ~SerialSignal_DTR; in tiocmset()
3123 spin_lock_irqsave(&info->lock,flags); in tiocmset()
3124 set_gtsignals(info); in tiocmset()
3125 spin_unlock_irqrestore(&info->lock,flags); in tiocmset()
3132 struct slgt_info *info = container_of(port, struct slgt_info, port); in carrier_raised() local
3134 spin_lock_irqsave(&info->lock,flags); in carrier_raised()
3135 get_gtsignals(info); in carrier_raised()
3136 spin_unlock_irqrestore(&info->lock,flags); in carrier_raised()
3138 return info->signals & SerialSignal_DCD; in carrier_raised()
3144 struct slgt_info *info = container_of(port, struct slgt_info, port); in dtr_rts() local
3146 spin_lock_irqsave(&info->lock,flags); in dtr_rts()
3148 info->signals |= SerialSignal_RTS | SerialSignal_DTR; in dtr_rts()
3150 info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR); in dtr_rts()
3151 set_gtsignals(info); in dtr_rts()
3152 spin_unlock_irqrestore(&info->lock,flags); in dtr_rts()
3160 struct slgt_info *info) in block_til_ready() argument
3167 struct tty_port *port = &info->port; in block_til_ready()
3190 spin_lock_irqsave(&info->lock, flags); in block_til_ready()
3192 spin_unlock_irqrestore(&info->lock, flags); in block_til_ready()
3242 static int alloc_tmp_rbuf(struct slgt_info *info) in alloc_tmp_rbuf() argument
3244 info->tmp_rbuf = kmalloc(info->max_frame_size + 5, GFP_KERNEL); in alloc_tmp_rbuf()
3245 if (info->tmp_rbuf == NULL) in alloc_tmp_rbuf()
3248 info->flag_buf = kzalloc(info->max_frame_size + 5, GFP_KERNEL); in alloc_tmp_rbuf()
3249 if (!info->flag_buf) { in alloc_tmp_rbuf()
3250 kfree(info->tmp_rbuf); in alloc_tmp_rbuf()
3251 info->tmp_rbuf = NULL; in alloc_tmp_rbuf()
3257 static void free_tmp_rbuf(struct slgt_info *info) in free_tmp_rbuf() argument
3259 kfree(info->tmp_rbuf); in free_tmp_rbuf()
3260 info->tmp_rbuf = NULL; in free_tmp_rbuf()
3261 kfree(info->flag_buf); in free_tmp_rbuf()
3262 info->flag_buf = NULL; in free_tmp_rbuf()
3268 static int alloc_desc(struct slgt_info *info) in alloc_desc() argument
3274 info->bufs = dma_alloc_coherent(&info->pdev->dev, DESC_LIST_SIZE, in alloc_desc()
3275 &info->bufs_dma_addr, GFP_KERNEL); in alloc_desc()
3276 if (info->bufs == NULL) in alloc_desc()
3279 info->rbufs = (struct slgt_desc*)info->bufs; in alloc_desc()
3280 info->tbufs = ((struct slgt_desc*)info->bufs) + info->rbuf_count; in alloc_desc()
3282 pbufs = (unsigned int)info->bufs_dma_addr; in alloc_desc()
3288 for (i=0; i < info->rbuf_count; i++) { in alloc_desc()
3290 info->rbufs[i].pdesc = pbufs + (i * sizeof(struct slgt_desc)); in alloc_desc()
3293 if (i == info->rbuf_count - 1) in alloc_desc()
3294 info->rbufs[i].next = cpu_to_le32(pbufs); in alloc_desc()
3296 info->rbufs[i].next = cpu_to_le32(pbufs + ((i+1) * sizeof(struct slgt_desc))); in alloc_desc()
3297 set_desc_count(info->rbufs[i], DMABUFSIZE); in alloc_desc()
3300 for (i=0; i < info->tbuf_count; i++) { in alloc_desc()
3302 info->tbufs[i].pdesc = pbufs + ((info->rbuf_count + i) * sizeof(struct slgt_desc)); in alloc_desc()
3305 if (i == info->tbuf_count - 1) in alloc_desc()
3306 info->tbufs[i].next = cpu_to_le32(pbufs + info->rbuf_count * sizeof(struct slgt_desc)); in alloc_desc()
3308 …info->tbufs[i].next = cpu_to_le32(pbufs + ((info->rbuf_count + i + 1) * sizeof(struct slgt_desc))); in alloc_desc()
3314 static void free_desc(struct slgt_info *info) in free_desc() argument
3316 if (info->bufs != NULL) { in free_desc()
3317 dma_free_coherent(&info->pdev->dev, DESC_LIST_SIZE, in free_desc()
3318 info->bufs, info->bufs_dma_addr); in free_desc()
3319 info->bufs = NULL; in free_desc()
3320 info->rbufs = NULL; in free_desc()
3321 info->tbufs = NULL; in free_desc()
3325 static int alloc_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count) in alloc_bufs() argument
3329 bufs[i].buf = dma_alloc_coherent(&info->pdev->dev, DMABUFSIZE, in alloc_bufs()
3338 static void free_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count) in free_bufs() argument
3344 dma_free_coherent(&info->pdev->dev, DMABUFSIZE, bufs[i].buf, in free_bufs()
3350 static int alloc_dma_bufs(struct slgt_info *info) in alloc_dma_bufs() argument
3352 info->rbuf_count = 32; in alloc_dma_bufs()
3353 info->tbuf_count = 32; in alloc_dma_bufs()
3355 if (alloc_desc(info) < 0 || in alloc_dma_bufs()
3356 alloc_bufs(info, info->rbufs, info->rbuf_count) < 0 || in alloc_dma_bufs()
3357 alloc_bufs(info, info->tbufs, info->tbuf_count) < 0 || in alloc_dma_bufs()
3358 alloc_tmp_rbuf(info) < 0) { in alloc_dma_bufs()
3359 DBGERR(("%s DMA buffer alloc fail\n", info->device_name)); in alloc_dma_bufs()
3362 reset_rbufs(info); in alloc_dma_bufs()
3366 static void free_dma_bufs(struct slgt_info *info) in free_dma_bufs() argument
3368 if (info->bufs) { in free_dma_bufs()
3369 free_bufs(info, info->rbufs, info->rbuf_count); in free_dma_bufs()
3370 free_bufs(info, info->tbufs, info->tbuf_count); in free_dma_bufs()
3371 free_desc(info); in free_dma_bufs()
3373 free_tmp_rbuf(info); in free_dma_bufs()
3376 static int claim_resources(struct slgt_info *info) in claim_resources() argument
3378 if (request_mem_region(info->phys_reg_addr, SLGT_REG_SIZE, "synclink_gt") == NULL) { in claim_resources()
3380 info->device_name, info->phys_reg_addr)); in claim_resources()
3381 info->init_error = DiagStatus_AddressConflict; in claim_resources()
3385 info->reg_addr_requested = true; in claim_resources()
3387 info->reg_addr = ioremap(info->phys_reg_addr, SLGT_REG_SIZE); in claim_resources()
3388 if (!info->reg_addr) { in claim_resources()
3390 info->device_name, info->phys_reg_addr)); in claim_resources()
3391 info->init_error = DiagStatus_CantAssignPciResources; in claim_resources()
3397 release_resources(info); in claim_resources()
3401 static void release_resources(struct slgt_info *info) in release_resources() argument
3403 if (info->irq_requested) { in release_resources()
3404 free_irq(info->irq_level, info); in release_resources()
3405 info->irq_requested = false; in release_resources()
3408 if (info->reg_addr_requested) { in release_resources()
3409 release_mem_region(info->phys_reg_addr, SLGT_REG_SIZE); in release_resources()
3410 info->reg_addr_requested = false; in release_resources()
3413 if (info->reg_addr) { in release_resources()
3414 iounmap(info->reg_addr); in release_resources()
3415 info->reg_addr = NULL; in release_resources()
3422 static void add_device(struct slgt_info *info) in add_device() argument
3426 info->next_device = NULL; in add_device()
3427 info->line = slgt_device_count; in add_device()
3428 sprintf(info->device_name, "%s%d", tty_dev_prefix, info->line); in add_device()
3430 if (info->line < MAX_DEVICES) { in add_device()
3431 if (maxframe[info->line]) in add_device()
3432 info->max_frame_size = maxframe[info->line]; in add_device()
3438 slgt_device_list = info; in add_device()
3443 current_dev->next_device = info; in add_device()
3446 if (info->max_frame_size < 4096) in add_device()
3447 info->max_frame_size = 4096; in add_device()
3448 else if (info->max_frame_size > 65535) in add_device()
3449 info->max_frame_size = 65535; in add_device()
3451 switch(info->pdev->device) { in add_device()
3463 info->params.mode = MGSL_MODE_ASYNC; in add_device()
3469 devstr, info->device_name, info->phys_reg_addr, in add_device()
3470 info->irq_level, info->max_frame_size); in add_device()
3473 hdlcdev_init(info); in add_device()
3487 struct slgt_info *info; in alloc_dev() local
3489 info = kzalloc(sizeof(struct slgt_info), GFP_KERNEL); in alloc_dev()
3491 if (!info) { in alloc_dev()
3495 tty_port_init(&info->port); in alloc_dev()
3496 info->port.ops = &slgt_port_ops; in alloc_dev()
3497 INIT_WORK(&info->task, bh_handler); in alloc_dev()
3498 info->max_frame_size = 4096; in alloc_dev()
3499 info->base_clock = 14745600; in alloc_dev()
3500 info->rbuf_fill_level = DMABUFSIZE; in alloc_dev()
3501 init_waitqueue_head(&info->status_event_wait_q); in alloc_dev()
3502 init_waitqueue_head(&info->event_wait_q); in alloc_dev()
3503 spin_lock_init(&info->netlock); in alloc_dev()
3504 memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); in alloc_dev()
3505 info->idle_mode = HDLC_TXIDLE_FLAGS; in alloc_dev()
3506 info->adapter_num = adapter_num; in alloc_dev()
3507 info->port_num = port_num; in alloc_dev()
3509 timer_setup(&info->tx_timer, tx_timeout, 0); in alloc_dev()
3510 timer_setup(&info->rx_timer, rx_timeout, 0); in alloc_dev()
3513 info->pdev = pdev; in alloc_dev()
3514 info->irq_level = pdev->irq; in alloc_dev()
3515 info->phys_reg_addr = pci_resource_start(pdev,0); in alloc_dev()
3517 info->bus_type = MGSL_BUS_TYPE_PCI; in alloc_dev()
3518 info->irq_flags = IRQF_SHARED; in alloc_dev()
3520 info->init_error = -1; /* assume error, set to 0 on successful init */ in alloc_dev()
3523 return info; in alloc_dev()
3588 struct slgt_info *info = port_array[i]; in device_init() local
3589 tty_port_register_device(&info->port, serial_driver, info->line, in device_init()
3590 &info->pdev->dev); in device_init()
3638 struct slgt_info *info; in slgt_cleanup() local
3644 for (info=slgt_device_list ; info != NULL ; info=info->next_device) in slgt_cleanup()
3645 tty_unregister_device(serial_driver, info->line); in slgt_cleanup()
3651 info = slgt_device_list; in slgt_cleanup()
3652 while(info) { in slgt_cleanup()
3653 reset_port(info); in slgt_cleanup()
3654 info = info->next_device; in slgt_cleanup()
3658 info = slgt_device_list; in slgt_cleanup()
3659 while(info) { in slgt_cleanup()
3661 hdlcdev_exit(info); in slgt_cleanup()
3663 free_dma_bufs(info); in slgt_cleanup()
3664 free_tmp_rbuf(info); in slgt_cleanup()
3665 if (info->port_num == 0) in slgt_cleanup()
3666 release_resources(info); in slgt_cleanup()
3667 tmp = info; in slgt_cleanup()
3668 info = info->next_device; in slgt_cleanup()
3747 unsigned long reg_addr = ((unsigned long)info->reg_addr) + addr; \
3749 reg_addr += (info->port_num) * 32; \
3751 reg_addr += (info->port_num) * 16;
3753 static __u8 rd_reg8(struct slgt_info *info, unsigned int addr) in rd_reg8() argument
3759 static void wr_reg8(struct slgt_info *info, unsigned int addr, __u8 value) in wr_reg8() argument
3765 static __u16 rd_reg16(struct slgt_info *info, unsigned int addr) in rd_reg16() argument
3771 static void wr_reg16(struct slgt_info *info, unsigned int addr, __u16 value) in wr_reg16() argument
3777 static __u32 rd_reg32(struct slgt_info *info, unsigned int addr) in rd_reg32() argument
3783 static void wr_reg32(struct slgt_info *info, unsigned int addr, __u32 value) in wr_reg32() argument
3789 static void rdma_reset(struct slgt_info *info) in rdma_reset() argument
3794 wr_reg32(info, RDCSR, BIT1); in rdma_reset()
3798 if (!(rd_reg32(info, RDCSR) & BIT0)) in rdma_reset()
3802 static void tdma_reset(struct slgt_info *info) in tdma_reset() argument
3807 wr_reg32(info, TDCSR, BIT1); in tdma_reset()
3811 if (!(rd_reg32(info, TDCSR) & BIT0)) in tdma_reset()
3820 static void enable_loopback(struct slgt_info *info) in enable_loopback() argument
3823 wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) | BIT2)); in enable_loopback()
3825 if (info->params.mode != MGSL_MODE_ASYNC) { in enable_loopback()
3834 wr_reg8(info, CCR, 0x49); in enable_loopback()
3837 if (info->params.clock_speed) in enable_loopback()
3838 set_rate(info, info->params.clock_speed); in enable_loopback()
3840 set_rate(info, 3686400); in enable_loopback()
3847 static void set_rate(struct slgt_info *info, u32 rate) in set_rate() argument
3850 unsigned int osc = info->base_clock; in set_rate()
3862 wr_reg16(info, BDR, (unsigned short)div); in set_rate()
3866 static void rx_stop(struct slgt_info *info) in rx_stop() argument
3871 val = rd_reg16(info, RCR) & ~BIT1; /* clear enable bit */ in rx_stop()
3872 wr_reg16(info, RCR, (unsigned short)(val | BIT2)); /* set reset bit */ in rx_stop()
3873 wr_reg16(info, RCR, val); /* clear reset bit */ in rx_stop()
3875 slgt_irq_off(info, IRQ_RXOVER + IRQ_RXDATA + IRQ_RXIDLE); in rx_stop()
3878 wr_reg16(info, SSR, IRQ_RXIDLE + IRQ_RXOVER); in rx_stop()
3880 rdma_reset(info); in rx_stop()
3882 info->rx_enabled = false; in rx_stop()
3883 info->rx_restart = false; in rx_stop()
3886 static void rx_start(struct slgt_info *info) in rx_start() argument
3890 slgt_irq_off(info, IRQ_RXOVER + IRQ_RXDATA); in rx_start()
3893 wr_reg16(info, SSR, IRQ_RXOVER); in rx_start()
3896 val = rd_reg16(info, RCR) & ~BIT1; /* clear enable bit */ in rx_start()
3897 wr_reg16(info, RCR, (unsigned short)(val | BIT2)); /* set reset bit */ in rx_start()
3898 wr_reg16(info, RCR, val); /* clear reset bit */ in rx_start()
3900 rdma_reset(info); in rx_start()
3901 reset_rbufs(info); in rx_start()
3903 if (info->rx_pio) { in rx_start()
3905 wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) & ~BIT14)); in rx_start()
3906 slgt_irq_on(info, IRQ_RXDATA); in rx_start()
3907 if (info->params.mode == MGSL_MODE_ASYNC) { in rx_start()
3909 wr_reg32(info, RDCSR, BIT6); in rx_start()
3913 wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) | BIT14)); in rx_start()
3915 wr_reg32(info, RDDAR, info->rbufs[0].pdesc); in rx_start()
3917 if (info->params.mode != MGSL_MODE_ASYNC) { in rx_start()
3919 wr_reg32(info, RDCSR, (BIT2 + BIT0)); in rx_start()
3922 wr_reg32(info, RDCSR, (BIT6 + BIT2 + BIT0)); in rx_start()
3926 slgt_irq_on(info, IRQ_RXOVER); in rx_start()
3929 wr_reg16(info, RCR, (unsigned short)(rd_reg16(info, RCR) | BIT1)); in rx_start()
3931 info->rx_restart = false; in rx_start()
3932 info->rx_enabled = true; in rx_start()
3935 static void tx_start(struct slgt_info *info) in tx_start() argument
3937 if (!info->tx_enabled) { in tx_start()
3938 wr_reg16(info, TCR, in tx_start()
3939 (unsigned short)((rd_reg16(info, TCR) | BIT1) & ~BIT2)); in tx_start()
3940 info->tx_enabled = true; in tx_start()
3943 if (desc_count(info->tbufs[info->tbuf_start])) { in tx_start()
3944 info->drop_rts_on_tx_done = false; in tx_start()
3946 if (info->params.mode != MGSL_MODE_ASYNC) { in tx_start()
3947 if (info->params.flags & HDLC_FLAG_AUTO_RTS) { in tx_start()
3948 get_gtsignals(info); in tx_start()
3949 if (!(info->signals & SerialSignal_RTS)) { in tx_start()
3950 info->signals |= SerialSignal_RTS; in tx_start()
3951 set_gtsignals(info); in tx_start()
3952 info->drop_rts_on_tx_done = true; in tx_start()
3956 slgt_irq_off(info, IRQ_TXDATA); in tx_start()
3957 slgt_irq_on(info, IRQ_TXUNDER + IRQ_TXIDLE); in tx_start()
3959 wr_reg16(info, SSR, (unsigned short)(IRQ_TXIDLE + IRQ_TXUNDER)); in tx_start()
3961 slgt_irq_off(info, IRQ_TXDATA); in tx_start()
3962 slgt_irq_on(info, IRQ_TXIDLE); in tx_start()
3964 wr_reg16(info, SSR, IRQ_TXIDLE); in tx_start()
3967 wr_reg32(info, TDDAR, info->tbufs[info->tbuf_start].pdesc); in tx_start()
3968 wr_reg32(info, TDCSR, BIT2 + BIT0); in tx_start()
3969 info->tx_active = true; in tx_start()
3973 static void tx_stop(struct slgt_info *info) in tx_stop() argument
3977 del_timer(&info->tx_timer); in tx_stop()
3979 tdma_reset(info); in tx_stop()
3982 val = rd_reg16(info, TCR) & ~BIT1; /* clear enable bit */ in tx_stop()
3983 wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */ in tx_stop()
3985 slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER); in tx_stop()
3988 wr_reg16(info, SSR, (unsigned short)(IRQ_TXIDLE + IRQ_TXUNDER)); in tx_stop()
3990 reset_tbufs(info); in tx_stop()
3992 info->tx_enabled = false; in tx_stop()
3993 info->tx_active = false; in tx_stop()
3996 static void reset_port(struct slgt_info *info) in reset_port() argument
3998 if (!info->reg_addr) in reset_port()
4001 tx_stop(info); in reset_port()
4002 rx_stop(info); in reset_port()
4004 info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR); in reset_port()
4005 set_gtsignals(info); in reset_port()
4007 slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); in reset_port()
4010 static void reset_adapter(struct slgt_info *info) in reset_adapter() argument
4013 for (i=0; i < info->port_count; ++i) { in reset_adapter()
4014 if (info->port_array[i]) in reset_adapter()
4015 reset_port(info->port_array[i]); in reset_adapter()
4019 static void async_mode(struct slgt_info *info) in async_mode() argument
4023 slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); in async_mode()
4024 tx_stop(info); in async_mode()
4025 rx_stop(info); in async_mode()
4047 if (info->if_mode & MGSL_INTERFACE_RTS_EN) in async_mode()
4050 if (info->params.parity != ASYNC_PARITY_NONE) { in async_mode()
4052 if (info->params.parity == ASYNC_PARITY_ODD) in async_mode()
4056 switch (info->params.data_bits) in async_mode()
4063 if (info->params.stop_bits != 1) in async_mode()
4066 if (info->params.flags & HDLC_FLAG_AUTO_CTS) in async_mode()
4069 wr_reg16(info, TCR, val); in async_mode()
4090 if (info->params.parity != ASYNC_PARITY_NONE) { in async_mode()
4092 if (info->params.parity == ASYNC_PARITY_ODD) in async_mode()
4096 switch (info->params.data_bits) in async_mode()
4103 if (info->params.flags & HDLC_FLAG_AUTO_DCD) in async_mode()
4106 wr_reg16(info, RCR, val); in async_mode()
4117 wr_reg8(info, CCR, 0x69); in async_mode()
4119 msc_set_vcr(info); in async_mode()
4142 if ((rd_reg32(info, JCR) & BIT8) && info->params.data_rate && in async_mode()
4143 ((info->base_clock < (info->params.data_rate * 16)) || in async_mode()
4144 (info->base_clock % (info->params.data_rate * 16)))) { in async_mode()
4147 set_rate(info, info->params.data_rate * 8); in async_mode()
4150 set_rate(info, info->params.data_rate * 16); in async_mode()
4152 wr_reg16(info, SCR, val); in async_mode()
4154 slgt_irq_on(info, IRQ_RXBREAK | IRQ_RXOVER); in async_mode()
4156 if (info->params.loopback) in async_mode()
4157 enable_loopback(info); in async_mode()
4160 static void sync_mode(struct slgt_info *info) in sync_mode() argument
4164 slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); in sync_mode()
4165 tx_stop(info); in sync_mode()
4166 rx_stop(info); in sync_mode()
4190 switch(info->params.mode) { in sync_mode()
4198 if (info->if_mode & MGSL_INTERFACE_RTS_EN) in sync_mode()
4201 switch(info->params.encoding) in sync_mode()
4212 switch (info->params.crc_type & HDLC_CRC_MASK) in sync_mode()
4218 if (info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE) in sync_mode()
4221 switch (info->params.preamble_length) in sync_mode()
4228 if (info->params.flags & HDLC_FLAG_AUTO_CTS) in sync_mode()
4231 wr_reg16(info, TCR, val); in sync_mode()
4235 switch (info->params.preamble) in sync_mode()
4244 wr_reg8(info, TPR, (unsigned char)val); in sync_mode()
4265 switch(info->params.mode) { in sync_mode()
4274 switch(info->params.encoding) in sync_mode()
4285 switch (info->params.crc_type & HDLC_CRC_MASK) in sync_mode()
4291 if (info->params.flags & HDLC_FLAG_AUTO_DCD) in sync_mode()
4294 wr_reg16(info, RCR, val); in sync_mode()
4305 if (info->params.flags & HDLC_FLAG_TXC_BRG) in sync_mode()
4310 if (info->params.flags & HDLC_FLAG_RXC_DPLL) in sync_mode()
4315 else if (info->params.flags & HDLC_FLAG_TXC_DPLL) in sync_mode()
4317 else if (info->params.flags & HDLC_FLAG_TXC_RXCPIN) in sync_mode()
4320 if (info->params.flags & HDLC_FLAG_RXC_BRG) in sync_mode()
4322 else if (info->params.flags & HDLC_FLAG_RXC_DPLL) in sync_mode()
4324 else if (info->params.flags & HDLC_FLAG_RXC_TXCPIN) in sync_mode()
4327 if (info->params.clock_speed) in sync_mode()
4330 wr_reg8(info, CCR, (unsigned char)val); in sync_mode()
4332 if (info->params.flags & (HDLC_FLAG_TXC_DPLL + HDLC_FLAG_RXC_DPLL)) in sync_mode()
4335 switch(info->params.encoding) in sync_mode()
4345 wr_reg16(info, RCR, (unsigned short)(rd_reg16(info, RCR) | val)); in sync_mode()
4348 set_rate(info, info->params.clock_speed * 16); in sync_mode()
4351 set_rate(info, info->params.clock_speed); in sync_mode()
4353 tx_set_idle(info); in sync_mode()
4355 msc_set_vcr(info); in sync_mode()
4376 wr_reg16(info, SCR, BIT15 + BIT14 + BIT0); in sync_mode()
4378 if (info->params.loopback) in sync_mode()
4379 enable_loopback(info); in sync_mode()
4385 static void tx_set_idle(struct slgt_info *info) in tx_set_idle() argument
4393 tcr = rd_reg16(info, TCR); in tx_set_idle()
4394 if (info->idle_mode & HDLC_TXIDLE_CUSTOM_16) { in tx_set_idle()
4398 wr_reg8(info, TPR, (unsigned char)((info->idle_mode >> 8) & 0xff)); in tx_set_idle()
4403 wr_reg16(info, TCR, tcr); in tx_set_idle()
4405 if (info->idle_mode & (HDLC_TXIDLE_CUSTOM_8 | HDLC_TXIDLE_CUSTOM_16)) { in tx_set_idle()
4407 val = (unsigned char)(info->idle_mode & 0xff); in tx_set_idle()
4410 switch(info->idle_mode) in tx_set_idle()
4421 wr_reg8(info, TIR, val); in tx_set_idle()
4427 static void get_gtsignals(struct slgt_info *info) in get_gtsignals() argument
4429 unsigned short status = rd_reg16(info, SSR); in get_gtsignals()
4432 info->signals &= SerialSignal_RTS | SerialSignal_DTR; in get_gtsignals()
4435 info->signals |= SerialSignal_DSR; in get_gtsignals()
4437 info->signals |= SerialSignal_CTS; in get_gtsignals()
4439 info->signals |= SerialSignal_DCD; in get_gtsignals()
4441 info->signals |= SerialSignal_RI; in get_gtsignals()
4447 static void msc_set_vcr(struct slgt_info *info) in msc_set_vcr() argument
4460 switch(info->if_mode & MGSL_INTERFACE_MASK) in msc_set_vcr()
4473 if (info->if_mode & MGSL_INTERFACE_MSB_FIRST) in msc_set_vcr()
4475 if (info->signals & SerialSignal_DTR) in msc_set_vcr()
4477 if (info->signals & SerialSignal_RTS) in msc_set_vcr()
4479 if (info->if_mode & MGSL_INTERFACE_LL) in msc_set_vcr()
4481 if (info->if_mode & MGSL_INTERFACE_RL) in msc_set_vcr()
4483 wr_reg8(info, VCR, val); in msc_set_vcr()
4489 static void set_gtsignals(struct slgt_info *info) in set_gtsignals() argument
4491 unsigned char val = rd_reg8(info, VCR); in set_gtsignals()
4492 if (info->signals & SerialSignal_DTR) in set_gtsignals()
4496 if (info->signals & SerialSignal_RTS) in set_gtsignals()
4500 wr_reg8(info, VCR, val); in set_gtsignals()
4506 static void free_rbufs(struct slgt_info *info, unsigned int i, unsigned int last) in free_rbufs() argument
4512 info->rbufs[i].status = 0; in free_rbufs()
4513 set_desc_count(info->rbufs[i], info->rbuf_fill_level); in free_rbufs()
4516 if (++i == info->rbuf_count) in free_rbufs()
4519 info->rbuf_current = i; in free_rbufs()
4525 static void reset_rbufs(struct slgt_info *info) in reset_rbufs() argument
4527 free_rbufs(info, 0, info->rbuf_count - 1); in reset_rbufs()
4528 info->rbuf_fill_index = 0; in reset_rbufs()
4529 info->rbuf_fill_count = 0; in reset_rbufs()
4537 static bool rx_get_frame(struct slgt_info *info) in rx_get_frame() argument
4543 struct tty_struct *tty = info->port.tty; in rx_get_frame()
4547 switch (info->params.crc_type & HDLC_CRC_MASK) { in rx_get_frame()
4556 start = end = info->rbuf_current; in rx_get_frame()
4559 if (!desc_complete(info->rbufs[end])) in rx_get_frame()
4562 if (framesize == 0 && info->params.addr_filter != 0xff) in rx_get_frame()
4563 addr_field = info->rbufs[end].buf[0]; in rx_get_frame()
4565 framesize += desc_count(info->rbufs[end]); in rx_get_frame()
4567 if (desc_eof(info->rbufs[end])) in rx_get_frame()
4570 if (++end == info->rbuf_count) in rx_get_frame()
4573 if (end == info->rbuf_current) { in rx_get_frame()
4574 if (info->rx_enabled){ in rx_get_frame()
4575 spin_lock_irqsave(&info->lock,flags); in rx_get_frame()
4576 rx_start(info); in rx_get_frame()
4577 spin_unlock_irqrestore(&info->lock,flags); in rx_get_frame()
4592 status = desc_status(info->rbufs[end]); in rx_get_frame()
4595 if ((info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_NONE) in rx_get_frame()
4599 (addr_field != 0xff && addr_field != info->params.addr_filter)) { in rx_get_frame()
4600 free_rbufs(info, start, end); in rx_get_frame()
4605 info->icount.rxshort++; in rx_get_frame()
4608 info->icount.rxcrc++; in rx_get_frame()
4609 if (!(info->params.crc_type & HDLC_CRC_RETURN_EX)) in rx_get_frame()
4615 info->netdev->stats.rx_errors++; in rx_get_frame()
4616 info->netdev->stats.rx_frame_errors++; in rx_get_frame()
4621 info->device_name, status, framesize)); in rx_get_frame()
4622 DBGDATA(info, info->rbufs[start].buf, min_t(int, framesize, info->rbuf_fill_level), "rx"); in rx_get_frame()
4625 if (!(info->params.crc_type & HDLC_CRC_RETURN_EX)) { in rx_get_frame()
4630 if (framesize > info->max_frame_size + crc_size) in rx_get_frame()
4631 info->icount.rxlong++; in rx_get_frame()
4636 unsigned char *p = info->tmp_rbuf; in rx_get_frame()
4637 info->tmp_rbuf_count = framesize; in rx_get_frame()
4639 info->icount.rxok++; in rx_get_frame()
4642 int partial_count = min_t(int, copy_count, info->rbuf_fill_level); in rx_get_frame()
4643 memcpy(p, info->rbufs[i].buf, partial_count); in rx_get_frame()
4646 if (++i == info->rbuf_count) in rx_get_frame()
4650 if (info->params.crc_type & HDLC_CRC_RETURN_EX) { in rx_get_frame()
4656 if (info->netcount) in rx_get_frame()
4657 hdlcdev_rx(info,info->tmp_rbuf, framesize); in rx_get_frame()
4660 ldisc_receive_buf(tty, info->tmp_rbuf, info->flag_buf, framesize); in rx_get_frame()
4663 free_rbufs(info, start, end); in rx_get_frame()
4674 static bool rx_get_buf(struct slgt_info *info) in rx_get_buf() argument
4676 unsigned int i = info->rbuf_current; in rx_get_buf()
4679 if (!desc_complete(info->rbufs[i])) in rx_get_buf()
4681 count = desc_count(info->rbufs[i]); in rx_get_buf()
4682 switch(info->params.mode) { in rx_get_buf()
4687 if (desc_residue(info->rbufs[i])) in rx_get_buf()
4691 DBGDATA(info, info->rbufs[i].buf, count, "rx"); in rx_get_buf()
4694 ldisc_receive_buf(info->port.tty, info->rbufs[i].buf, in rx_get_buf()
4695 info->flag_buf, count); in rx_get_buf()
4696 free_rbufs(info, i, i); in rx_get_buf()
4700 static void reset_tbufs(struct slgt_info *info) in reset_tbufs() argument
4703 info->tbuf_current = 0; in reset_tbufs()
4704 for (i=0 ; i < info->tbuf_count ; i++) { in reset_tbufs()
4705 info->tbufs[i].status = 0; in reset_tbufs()
4706 info->tbufs[i].count = 0; in reset_tbufs()
4713 static unsigned int free_tbuf_count(struct slgt_info *info) in free_tbuf_count() argument
4716 unsigned int i = info->tbuf_current; in free_tbuf_count()
4720 if (desc_count(info->tbufs[i])) in free_tbuf_count()
4723 if (++i == info->tbuf_count) in free_tbuf_count()
4725 } while (i != info->tbuf_current); in free_tbuf_count()
4728 if (count && (rd_reg32(info, TDCSR) & BIT0)) in free_tbuf_count()
4738 static unsigned int tbuf_bytes(struct slgt_info *info) in tbuf_bytes() argument
4741 unsigned int i = info->tbuf_current; in tbuf_bytes()
4758 count = desc_count(info->tbufs[i]); in tbuf_bytes()
4762 active_buf_count = info->tbufs[i].buf_count; in tbuf_bytes()
4763 if (++i == info->tbuf_count) in tbuf_bytes()
4765 } while (i != info->tbuf_current); in tbuf_bytes()
4768 reg_value = rd_reg32(info, TDCSR); in tbuf_bytes()
4778 if (info->tx_active) in tbuf_bytes()
4788 static bool tx_load(struct slgt_info *info, const char *buf, unsigned int size) in tx_load() argument
4795 if (DIV_ROUND_UP(size, DMABUFSIZE) > free_tbuf_count(info)) in tx_load()
4798 DBGDATA(info, buf, size, "tx"); in tx_load()
4811 info->tbuf_start = i = info->tbuf_current; in tx_load()
4814 d = &info->tbufs[i]; in tx_load()
4826 if ((!size && info->params.mode == MGSL_MODE_HDLC) || in tx_load()
4827 info->params.mode == MGSL_MODE_RAW) in tx_load()
4833 if (i != info->tbuf_start) in tx_load()
4837 if (++i == info->tbuf_count) in tx_load()
4841 info->tbuf_current = i; in tx_load()
4844 d = &info->tbufs[info->tbuf_start]; in tx_load()
4848 if (!info->tx_active) in tx_load()
4849 tx_start(info); in tx_load()
4850 update_tx_timer(info); in tx_load()
4855 static int register_test(struct slgt_info *info) in register_test() argument
4864 wr_reg16(info, TIR, patterns[i]); in register_test()
4865 wr_reg16(info, BDR, patterns[(i+1)%count]); in register_test()
4866 if ((rd_reg16(info, TIR) != patterns[i]) || in register_test()
4867 (rd_reg16(info, BDR) != patterns[(i+1)%count])) { in register_test()
4872 info->gpio_present = (rd_reg32(info, JCR) & BIT5) ? 1 : 0; in register_test()
4873 info->init_error = rc ? 0 : DiagStatus_AddressFailure; in register_test()
4877 static int irq_test(struct slgt_info *info) in irq_test() argument
4881 struct tty_struct *oldtty = info->port.tty; in irq_test()
4882 u32 speed = info->params.data_rate; in irq_test()
4884 info->params.data_rate = 921600; in irq_test()
4885 info->port.tty = NULL; in irq_test()
4887 spin_lock_irqsave(&info->lock, flags); in irq_test()
4888 async_mode(info); in irq_test()
4889 slgt_irq_on(info, IRQ_TXIDLE); in irq_test()
4892 wr_reg16(info, TCR, in irq_test()
4893 (unsigned short)(rd_reg16(info, TCR) | BIT1)); in irq_test()
4896 wr_reg16(info, TDR, 0); in irq_test()
4899 info->init_error = DiagStatus_IrqFailure; in irq_test()
4900 info->irq_occurred = false; in irq_test()
4902 spin_unlock_irqrestore(&info->lock, flags); in irq_test()
4905 while(timeout-- && !info->irq_occurred) in irq_test()
4908 spin_lock_irqsave(&info->lock,flags); in irq_test()
4909 reset_port(info); in irq_test()
4910 spin_unlock_irqrestore(&info->lock,flags); in irq_test()
4912 info->params.data_rate = speed; in irq_test()
4913 info->port.tty = oldtty; in irq_test()
4915 info->init_error = info->irq_occurred ? 0 : DiagStatus_IrqFailure; in irq_test()
4916 return info->irq_occurred ? 0 : -ENODEV; in irq_test()
4919 static int loopback_test_rx(struct slgt_info *info) in loopback_test_rx() argument
4924 if (desc_complete(info->rbufs[0])) { in loopback_test_rx()
4925 count = desc_count(info->rbufs[0]); in loopback_test_rx()
4926 src = info->rbufs[0].buf; in loopback_test_rx()
4927 dest = info->tmp_rbuf; in loopback_test_rx()
4934 info->tmp_rbuf_count++; in loopback_test_rx()
4937 DBGDATA(info, info->tmp_rbuf, info->tmp_rbuf_count, "rx"); in loopback_test_rx()
4943 static int loopback_test(struct slgt_info *info) in loopback_test() argument
4953 struct tty_struct *oldtty = info->port.tty; in loopback_test()
4956 memcpy(¶ms, &info->params, sizeof(params)); in loopback_test()
4958 info->params.mode = MGSL_MODE_ASYNC; in loopback_test()
4959 info->params.data_rate = 921600; in loopback_test()
4960 info->params.loopback = 1; in loopback_test()
4961 info->port.tty = NULL; in loopback_test()
4967 info->tmp_rbuf_count = 0; in loopback_test()
4968 memset(info->tmp_rbuf, 0, TESTFRAMESIZE); in loopback_test()
4971 spin_lock_irqsave(&info->lock,flags); in loopback_test()
4972 async_mode(info); in loopback_test()
4973 rx_start(info); in loopback_test()
4974 tx_load(info, buf, count); in loopback_test()
4975 spin_unlock_irqrestore(&info->lock, flags); in loopback_test()
4980 if (loopback_test_rx(info)) { in loopback_test()
4987 if (!rc && (info->tmp_rbuf_count != count || in loopback_test()
4988 memcmp(buf, info->tmp_rbuf, count))) { in loopback_test()
4992 spin_lock_irqsave(&info->lock,flags); in loopback_test()
4993 reset_adapter(info); in loopback_test()
4994 spin_unlock_irqrestore(&info->lock,flags); in loopback_test()
4996 memcpy(&info->params, ¶ms, sizeof(info->params)); in loopback_test()
4997 info->port.tty = oldtty; in loopback_test()
4999 info->init_error = rc ? DiagStatus_DmaFailure : 0; in loopback_test()
5003 static int adapter_test(struct slgt_info *info) in adapter_test() argument
5005 DBGINFO(("testing %s\n", info->device_name)); in adapter_test()
5006 if (register_test(info) < 0) { in adapter_test()
5008 info->device_name, info->phys_reg_addr); in adapter_test()
5009 } else if (irq_test(info) < 0) { in adapter_test()
5011 info->device_name, info->irq_level); in adapter_test()
5012 } else if (loopback_test(info) < 0) { in adapter_test()
5013 printk("loopback test failure %s\n", info->device_name); in adapter_test()
5015 return info->init_error; in adapter_test()
5023 struct slgt_info *info = from_timer(info, t, tx_timer); in tx_timeout() local
5026 DBGINFO(("%s tx_timeout\n", info->device_name)); in tx_timeout()
5027 if(info->tx_active && info->params.mode == MGSL_MODE_HDLC) { in tx_timeout()
5028 info->icount.txtimeout++; in tx_timeout()
5030 spin_lock_irqsave(&info->lock,flags); in tx_timeout()
5031 tx_stop(info); in tx_timeout()
5032 spin_unlock_irqrestore(&info->lock,flags); in tx_timeout()
5035 if (info->netcount) in tx_timeout()
5036 hdlcdev_tx_done(info); in tx_timeout()
5039 bh_transmit(info); in tx_timeout()
5047 struct slgt_info *info = from_timer(info, t, rx_timer); in rx_timeout() local
5050 DBGINFO(("%s rx_timeout\n", info->device_name)); in rx_timeout()
5051 spin_lock_irqsave(&info->lock, flags); in rx_timeout()
5052 info->pending_bh |= BH_RECEIVE; in rx_timeout()
5053 spin_unlock_irqrestore(&info->lock, flags); in rx_timeout()
5054 bh_handler(&info->task); in rx_timeout()