Lines Matching refs:info
321 #define write_reg(info, reg, val) outb((val),(info)->io_base + (reg))
322 #define read_reg(info, reg) inb((info)->io_base + (reg))
324 #define read_reg16(info, reg) inw((info)->io_base + (reg))
325 #define write_reg16(info, reg, val) outw((val), (info)->io_base + (reg))
327 #define set_reg_bits(info, reg, mask) \
328 write_reg(info, (reg), \
329 (unsigned char) (read_reg(info, (reg)) | (mask)))
330 #define clear_reg_bits(info, reg, mask) \
331 write_reg(info, (reg), \
332 (unsigned char) (read_reg(info, (reg)) & ~(mask)))
336 static void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask)
339 info->imra_value |= mask;
340 write_reg16(info, CHA + IMR, info->imra_value);
342 info->imrb_value |= mask;
343 write_reg16(info, CHB + IMR, info->imrb_value);
346 static void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask)
349 info->imra_value &= ~mask;
350 write_reg16(info, CHA + IMR, info->imra_value);
352 info->imrb_value &= ~mask;
353 write_reg16(info, CHB + IMR, info->imrb_value);
357 #define port_irq_disable(info, mask) \
358 { info->pim_value |= (mask); write_reg(info, PIM, info->pim_value); }
360 #define port_irq_enable(info, mask) \
361 { info->pim_value &= ~(mask); write_reg(info, PIM, info->pim_value); }
363 static void rx_start(MGSLPC_INFO *info);
364 static void rx_stop(MGSLPC_INFO *info);
366 static void tx_start(MGSLPC_INFO *info, struct tty_struct *tty);
367 static void tx_stop(MGSLPC_INFO *info);
368 static void tx_set_idle(MGSLPC_INFO *info);
370 static void get_signals(MGSLPC_INFO *info);
371 static void set_signals(MGSLPC_INFO *info);
373 static void reset_device(MGSLPC_INFO *info);
375 static void hdlc_mode(MGSLPC_INFO *info);
376 static void async_mode(MGSLPC_INFO *info);
385 static void hdlcdev_tx_done(MGSLPC_INFO *info);
386 static void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size);
387 static int hdlcdev_init(MGSLPC_INFO *info);
388 static void hdlcdev_exit(MGSLPC_INFO *info);
391 static void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit);
393 static bool register_test(MGSLPC_INFO *info);
394 static bool irq_test(MGSLPC_INFO *info);
395 static int adapter_test(MGSLPC_INFO *info);
397 static int claim_resources(MGSLPC_INFO *info);
398 static void release_resources(MGSLPC_INFO *info);
399 static int mgslpc_add_device(MGSLPC_INFO *info);
400 static void mgslpc_remove_device(MGSLPC_INFO *info);
402 static bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty);
403 static void rx_reset_buffers(MGSLPC_INFO *info);
404 static int rx_alloc_buffers(MGSLPC_INFO *info);
405 static void rx_free_buffers(MGSLPC_INFO *info);
413 static void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty);
414 static void bh_status(MGSLPC_INFO *info);
422 static int get_stats(MGSLPC_INFO *info, struct mgsl_icount __user *user_icount);
423 static int get_params(MGSLPC_INFO *info, MGSL_PARAMS __user *user_params);
424 static int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params, struct tty_struct *tty);
425 static int get_txidle(MGSLPC_INFO *info, int __user *idle_mode);
426 static int set_txidle(MGSLPC_INFO *info, int idle_mode);
427 static int set_txenable(MGSLPC_INFO *info, int enable, struct tty_struct *tty);
428 static int tx_abort(MGSLPC_INFO *info);
429 static int set_rxenable(MGSLPC_INFO *info, int enable);
430 static int wait_events(MGSLPC_INFO *info, int __user *mask);
466 static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty);
516 MGSLPC_INFO *info;
522 info = kzalloc(sizeof(MGSLPC_INFO), GFP_KERNEL);
523 if (!info) {
528 info->magic = MGSLPC_MAGIC;
529 tty_port_init(&info->port);
530 info->port.ops = &mgslpc_port_ops;
531 INIT_WORK(&info->task, bh_handler);
532 info->max_frame_size = 4096;
533 info->port.close_delay = 5*HZ/10;
534 info->port.closing_wait = 30*HZ;
535 init_waitqueue_head(&info->status_event_wait_q);
536 init_waitqueue_head(&info->event_wait_q);
537 spin_lock_init(&info->lock);
538 spin_lock_init(&info->netlock);
539 memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS));
540 info->idle_mode = HDLC_TXIDLE_FLAGS;
541 info->imra_value = 0xffff;
542 info->imrb_value = 0xffff;
543 info->pim_value = 0xff;
545 info->p_dev = link;
546 link->priv = info;
554 ret = mgslpc_add_device(info);
563 tty_port_destroy(&info->port);
564 kfree(info);
578 MGSLPC_INFO *info = link->priv;
600 info->io_base = link->resource[0]->start;
601 info->irq_level = link->irq;
636 MGSLPC_INFO *info = link->priv;
638 info->stop = 1;
645 MGSLPC_INFO *info = link->priv;
647 info->stop = 0;
653 static inline bool mgslpc_paranoia_check(MGSLPC_INFO *info,
662 if (!info) {
666 if (info->magic != MGSLPC_MAGIC) {
671 if (!info)
686 static bool wait_command_complete(MGSLPC_INFO *info, unsigned char channel)
690 while (read_reg(info, (unsigned char)(channel+STAR)) & BIT2) {
698 static void issue_command(MGSLPC_INFO *info, unsigned char channel, unsigned char cmd)
700 wait_command_complete(info, channel);
701 write_reg(info, (unsigned char) (channel + CMDR), cmd);
706 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
709 if (mgslpc_paranoia_check(info, tty->name, "tx_pause"))
712 printk("tx_pause(%s)\n", info->device_name);
714 spin_lock_irqsave(&info->lock, flags);
715 if (info->tx_enabled)
716 tx_stop(info);
717 spin_unlock_irqrestore(&info->lock, flags);
722 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
725 if (mgslpc_paranoia_check(info, tty->name, "tx_release"))
728 printk("tx_release(%s)\n", info->device_name);
730 spin_lock_irqsave(&info->lock, flags);
731 if (!info->tx_enabled)
732 tx_start(info, tty);
733 spin_unlock_irqrestore(&info->lock, flags);
739 static int bh_action(MGSLPC_INFO *info)
744 spin_lock_irqsave(&info->lock, flags);
746 if (info->pending_bh & BH_RECEIVE) {
747 info->pending_bh &= ~BH_RECEIVE;
749 } else if (info->pending_bh & BH_TRANSMIT) {
750 info->pending_bh &= ~BH_TRANSMIT;
752 } else if (info->pending_bh & BH_STATUS) {
753 info->pending_bh &= ~BH_STATUS;
759 info->bh_running = false;
760 info->bh_requested = false;
763 spin_unlock_irqrestore(&info->lock, flags);
770 MGSLPC_INFO *info = container_of(work, MGSLPC_INFO, task);
776 __FILE__,__LINE__,info->device_name);
778 info->bh_running = true;
779 tty = tty_port_tty_get(&info->port);
781 while((action = bh_action(info)) != 0) {
791 while(rx_get_frame(info, tty));
794 bh_transmit(info, tty);
797 bh_status(info);
809 __FILE__,__LINE__,info->device_name);
812 static void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty)
815 printk("bh_transmit() entry on %s\n", info->device_name);
821 static void bh_status(MGSLPC_INFO *info)
823 info->ri_chkcount = 0;
824 info->dsr_chkcount = 0;
825 info->dcd_chkcount = 0;
826 info->cts_chkcount = 0;
830 static void rx_ready_hdlc(MGSLPC_INFO *info, int eom)
834 RXBUF *buf = (RXBUF*)(info->rx_buf + (info->rx_put * info->rx_buf_size));
839 if (!info->rx_enabled)
842 if (info->rx_frame_count >= info->rx_buf_count) {
844 issue_command(info, CHA, CMD_RXRESET);
845 info->pending_bh |= BH_RECEIVE;
846 info->rx_overflow = true;
847 info->icount.buf_overrun++;
853 fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f);
862 data[0] = read_reg(info, CHA + RXFIFO);
865 *((unsigned short *) data) = read_reg16(info, CHA + RXFIFO);
872 if (buf->count >= info->max_frame_size) {
874 issue_command(info, CHA, CMD_RXRESET);
884 info->pending_bh |= BH_RECEIVE;
885 info->rx_frame_count++;
886 info->rx_put++;
887 if (info->rx_put >= info->rx_buf_count)
888 info->rx_put = 0;
890 issue_command(info, CHA, CMD_RXFIFO);
893 static void rx_ready_async(MGSLPC_INFO *info, int tcd)
895 struct tty_port *port = &info->port;
899 struct mgsl_icount *icount = &info->icount;
903 fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f);
908 if (!fifo_count && (read_reg(info,CHA+STAR) & BIT5))
916 data = read_reg(info, CHA + RXFIFO);
917 status = read_reg(info, CHA + RXFIFO);
934 if (status & info->ignore_status_mask)
937 status &= info->read_status_mask;
946 issue_command(info, CHA, CMD_RXFIFO);
961 static void tx_done(MGSLPC_INFO *info, struct tty_struct *tty)
963 if (!info->tx_active)
966 info->tx_active = false;
967 info->tx_aborting = false;
969 if (info->params.mode == MGSL_MODE_ASYNC)
972 info->tx_count = info->tx_put = info->tx_get = 0;
973 del_timer(&info->tx_timer);
975 if (info->drop_rts_on_tx_done) {
976 get_signals(info);
977 if (info->serial_signals & SerialSignal_RTS) {
978 info->serial_signals &= ~SerialSignal_RTS;
979 set_signals(info);
981 info->drop_rts_on_tx_done = false;
985 if (info->netcount)
986 hdlcdev_tx_done(info);
991 tx_stop(info);
994 info->pending_bh |= BH_TRANSMIT;
998 static void tx_ready(MGSLPC_INFO *info, struct tty_struct *tty)
1004 printk("%s(%d):tx_ready(%s)\n", __FILE__, __LINE__, info->device_name);
1006 if (info->params.mode == MGSL_MODE_HDLC) {
1007 if (!info->tx_active)
1011 tx_stop(info);
1014 if (!info->tx_count)
1015 info->tx_active = false;
1018 if (!info->tx_count)
1021 while (info->tx_count && fifo_count) {
1022 c = min(2, min_t(int, fifo_count, min(info->tx_count, TXBUFSIZE - info->tx_get)));
1025 write_reg(info, CHA + TXFIFO, *(info->tx_buf + info->tx_get));
1027 write_reg16(info, CHA + TXFIFO,
1028 *((unsigned short*)(info->tx_buf + info->tx_get)));
1030 info->tx_count -= c;
1031 info->tx_get = (info->tx_get + c) & (TXBUFSIZE - 1);
1035 if (info->params.mode == MGSL_MODE_ASYNC) {
1036 if (info->tx_count < WAKEUP_CHARS)
1037 info->pending_bh |= BH_TRANSMIT;
1038 issue_command(info, CHA, CMD_TXFIFO);
1040 if (info->tx_count)
1041 issue_command(info, CHA, CMD_TXFIFO);
1043 issue_command(info, CHA, CMD_TXFIFO + CMD_TXEOM);
1047 static void cts_change(MGSLPC_INFO *info, struct tty_struct *tty)
1049 get_signals(info);
1050 if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
1051 irq_disable(info, CHB, IRQ_CTS);
1052 info->icount.cts++;
1053 if (info->serial_signals & SerialSignal_CTS)
1054 info->input_signal_events.cts_up++;
1056 info->input_signal_events.cts_down++;
1057 wake_up_interruptible(&info->status_event_wait_q);
1058 wake_up_interruptible(&info->event_wait_q);
1060 if (tty && tty_port_cts_enabled(&info->port)) {
1062 if (info->serial_signals & SerialSignal_CTS) {
1066 tx_start(info, tty);
1067 info->pending_bh |= BH_TRANSMIT;
1071 if (!(info->serial_signals & SerialSignal_CTS)) {
1075 tx_stop(info);
1079 info->pending_bh |= BH_STATUS;
1082 static void dcd_change(MGSLPC_INFO *info, struct tty_struct *tty)
1084 get_signals(info);
1085 if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
1086 irq_disable(info, CHB, IRQ_DCD);
1087 info->icount.dcd++;
1088 if (info->serial_signals & SerialSignal_DCD) {
1089 info->input_signal_events.dcd_up++;
1092 info->input_signal_events.dcd_down++;
1094 if (info->netcount) {
1095 if (info->serial_signals & SerialSignal_DCD)
1096 netif_carrier_on(info->netdev);
1098 netif_carrier_off(info->netdev);
1101 wake_up_interruptible(&info->status_event_wait_q);
1102 wake_up_interruptible(&info->event_wait_q);
1104 if (tty_port_check_carrier(&info->port)) {
1106 printk("%s CD now %s...", info->device_name,
1107 (info->serial_signals & SerialSignal_DCD) ? "on" : "off");
1108 if (info->serial_signals & SerialSignal_DCD)
1109 wake_up_interruptible(&info->port.open_wait);
1117 info->pending_bh |= BH_STATUS;
1120 static void dsr_change(MGSLPC_INFO *info)
1122 get_signals(info);
1123 if ((info->dsr_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
1124 port_irq_disable(info, PVR_DSR);
1125 info->icount.dsr++;
1126 if (info->serial_signals & SerialSignal_DSR)
1127 info->input_signal_events.dsr_up++;
1129 info->input_signal_events.dsr_down++;
1130 wake_up_interruptible(&info->status_event_wait_q);
1131 wake_up_interruptible(&info->event_wait_q);
1132 info->pending_bh |= BH_STATUS;
1135 static void ri_change(MGSLPC_INFO *info)
1137 get_signals(info);
1138 if ((info->ri_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
1139 port_irq_disable(info, PVR_RI);
1140 info->icount.rng++;
1141 if (info->serial_signals & SerialSignal_RI)
1142 info->input_signal_events.ri_up++;
1144 info->input_signal_events.ri_down++;
1145 wake_up_interruptible(&info->status_event_wait_q);
1146 wake_up_interruptible(&info->event_wait_q);
1147 info->pending_bh |= BH_STATUS;
1159 MGSLPC_INFO *info = dev_id;
1166 printk("mgslpc_isr(%d) entry.\n", info->irq_level);
1168 if (!(info->p_dev->_locked))
1171 tty = tty_port_tty_get(&info->port);
1173 spin_lock(&info->lock);
1175 while ((gis = read_reg(info, CHA + GIS))) {
1177 printk("mgslpc_isr %s gis=%04X\n", info->device_name,gis);
1186 isr = read_reg16(info, CHB + ISR);
1188 dcd_change(info, tty);
1190 cts_change(info, tty);
1194 isr = read_reg16(info, CHA + ISR);
1196 info->irq_occurred = true;
1197 irq_disable(info, CHA, IRQ_TIMER);
1202 info->icount.exithunt++;
1203 wake_up_interruptible(&info->event_wait_q);
1206 info->icount.brk++;
1207 if (info->port.flags & ASYNC_SAK)
1211 issue_command(info, CHA, CMD_RXFIFO_READ);
1214 if (info->params.mode == MGSL_MODE_HDLC)
1215 rx_ready_hdlc(info, isr & IRQ_RXEOM);
1217 rx_ready_async(info, isr & IRQ_RXEOM);
1222 if (info->tx_aborting)
1223 info->icount.txabort++;
1225 info->icount.txunder++;
1226 tx_done(info, tty);
1229 info->icount.txok++;
1230 tx_done(info, tty);
1233 tx_ready(info, tty);
1236 pis = read_reg(info, CHA + PIS);
1238 dsr_change(info);
1240 ri_change(info);
1248 if (info->pending_bh && !info->bh_running && !info->bh_requested) {
1251 __FILE__,__LINE__,info->device_name);
1252 schedule_work(&info->task);
1253 info->bh_requested = true;
1256 spin_unlock(&info->lock);
1261 __FILE__, __LINE__, info->irq_level);
1268 static int startup(MGSLPC_INFO * info, struct tty_struct *tty)
1273 printk("%s(%d):startup(%s)\n", __FILE__, __LINE__, info->device_name);
1275 if (tty_port_initialized(&info->port))
1278 if (!info->tx_buf) {
1280 info->tx_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL);
1281 if (!info->tx_buf) {
1283 __FILE__, __LINE__, info->device_name);
1288 info->pending_bh = 0;
1290 memset(&info->icount, 0, sizeof(info->icount));
1292 timer_setup(&info->tx_timer, tx_timeout, 0);
1295 retval = claim_resources(info);
1299 retval = adapter_test(info);
1304 release_resources(info);
1309 mgslpc_change_params(info, tty);
1314 tty_port_set_initialized(&info->port, 1);
1321 static void shutdown(MGSLPC_INFO * info, struct tty_struct *tty)
1325 if (!tty_port_initialized(&info->port))
1330 __FILE__, __LINE__, info->device_name);
1334 wake_up_interruptible(&info->status_event_wait_q);
1335 wake_up_interruptible(&info->event_wait_q);
1337 del_timer_sync(&info->tx_timer);
1339 if (info->tx_buf) {
1340 free_page((unsigned long) info->tx_buf);
1341 info->tx_buf = NULL;
1344 spin_lock_irqsave(&info->lock, flags);
1346 rx_stop(info);
1347 tx_stop(info);
1350 reset_device(info);
1353 info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
1354 set_signals(info);
1357 spin_unlock_irqrestore(&info->lock, flags);
1359 release_resources(info);
1364 tty_port_set_initialized(&info->port, 0);
1367 static void mgslpc_program_hw(MGSLPC_INFO *info, struct tty_struct *tty)
1371 spin_lock_irqsave(&info->lock, flags);
1373 rx_stop(info);
1374 tx_stop(info);
1375 info->tx_count = info->tx_put = info->tx_get = 0;
1377 if (info->params.mode == MGSL_MODE_HDLC || info->netcount)
1378 hdlc_mode(info);
1380 async_mode(info);
1382 set_signals(info);
1384 info->dcd_chkcount = 0;
1385 info->cts_chkcount = 0;
1386 info->ri_chkcount = 0;
1387 info->dsr_chkcount = 0;
1389 irq_enable(info, CHB, IRQ_DCD | IRQ_CTS);
1390 port_irq_enable(info, (unsigned char) PVR_DSR | PVR_RI);
1391 get_signals(info);
1393 if (info->netcount || (tty && C_CREAD(tty)))
1394 rx_start(info);
1396 spin_unlock_irqrestore(&info->lock, flags);
1401 static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty)
1411 __FILE__, __LINE__, info->device_name);
1418 info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR;
1420 info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
1425 case CS5: info->params.data_bits = 5; break;
1426 case CS6: info->params.data_bits = 6; break;
1427 case CS7: info->params.data_bits = 7; break;
1428 case CS8: info->params.data_bits = 8; break;
1429 default: info->params.data_bits = 7; break;
1433 info->params.stop_bits = 2;
1435 info->params.stop_bits = 1;
1437 info->params.parity = ASYNC_PARITY_NONE;
1440 info->params.parity = ASYNC_PARITY_ODD;
1442 info->params.parity = ASYNC_PARITY_EVEN;
1445 info->params.parity = ASYNC_PARITY_SPACE;
1452 bits_per_char = info->params.data_bits +
1453 info->params.stop_bits + 1;
1459 if (info->params.data_rate <= 460800) {
1460 info->params.data_rate = tty_get_baud_rate(tty);
1463 if (info->params.data_rate) {
1464 info->timeout = (32*HZ*bits_per_char) /
1465 info->params.data_rate;
1467 info->timeout += HZ/50; /* Add .02 seconds of slop */
1469 tty_port_set_cts_flow(&info->port, cflag & CRTSCTS);
1470 tty_port_set_check_carrier(&info->port, ~cflag & CLOCAL);
1474 info->read_status_mask = 0;
1476 info->read_status_mask |= BIT7 | BIT6;
1478 info->ignore_status_mask |= BIT7 | BIT6;
1480 mgslpc_program_hw(info, tty);
1487 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
1492 __FILE__, __LINE__, ch, info->device_name);
1495 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_put_char"))
1498 if (!info->tx_buf)
1501 spin_lock_irqsave(&info->lock, flags);
1503 if (info->params.mode == MGSL_MODE_ASYNC || !info->tx_active) {
1504 if (info->tx_count < TXBUFSIZE - 1) {
1505 info->tx_buf[info->tx_put++] = ch;
1506 info->tx_put &= TXBUFSIZE-1;
1507 info->tx_count++;
1511 spin_unlock_irqrestore(&info->lock, flags);
1520 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
1525 __FILE__, __LINE__, info->device_name, info->tx_count);
1527 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_flush_chars"))
1530 if (info->tx_count <= 0 || tty->stopped ||
1531 tty->hw_stopped || !info->tx_buf)
1536 __FILE__, __LINE__, info->device_name);
1538 spin_lock_irqsave(&info->lock, flags);
1539 if (!info->tx_active)
1540 tx_start(info, tty);
1541 spin_unlock_irqrestore(&info->lock, flags);
1558 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
1563 __FILE__, __LINE__, info->device_name, count);
1565 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write") ||
1566 !info->tx_buf)
1569 if (info->params.mode == MGSL_MODE_HDLC) {
1574 if (info->tx_active)
1576 else if (info->tx_count)
1582 min(TXBUFSIZE - info->tx_count - 1,
1583 TXBUFSIZE - info->tx_put));
1587 memcpy(info->tx_buf + info->tx_put, buf, c);
1589 spin_lock_irqsave(&info->lock, flags);
1590 info->tx_put = (info->tx_put + c) & (TXBUFSIZE-1);
1591 info->tx_count += c;
1592 spin_unlock_irqrestore(&info->lock, flags);
1599 if (info->tx_count && !tty->stopped && !tty->hw_stopped) {
1600 spin_lock_irqsave(&info->lock, flags);
1601 if (!info->tx_active)
1602 tx_start(info, tty);
1603 spin_unlock_irqrestore(&info->lock, flags);
1608 __FILE__, __LINE__, info->device_name, ret);
1616 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
1619 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write_room"))
1622 if (info->params.mode == MGSL_MODE_HDLC) {
1624 if (info->tx_active)
1629 ret = TXBUFSIZE - info->tx_count - 1;
1636 __FILE__, __LINE__, info->device_name, ret);
1644 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
1649 __FILE__, __LINE__, info->device_name);
1651 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_chars_in_buffer"))
1654 if (info->params.mode == MGSL_MODE_HDLC)
1655 rc = info->tx_active ? info->max_frame_size : 0;
1657 rc = info->tx_count;
1661 __FILE__, __LINE__, info->device_name, rc);
1670 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
1675 __FILE__, __LINE__, info->device_name);
1677 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_flush_buffer"))
1680 spin_lock_irqsave(&info->lock, flags);
1681 info->tx_count = info->tx_put = info->tx_get = 0;
1682 del_timer(&info->tx_timer);
1683 spin_unlock_irqrestore(&info->lock, flags);
1693 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
1698 __FILE__, __LINE__, info->device_name, ch);
1700 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_send_xchar"))
1703 info->x_char = ch;
1705 spin_lock_irqsave(&info->lock, flags);
1706 if (!info->tx_enabled)
1707 tx_start(info, tty);
1708 spin_unlock_irqrestore(&info->lock, flags);
1716 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
1721 __FILE__, __LINE__, info->device_name);
1723 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_throttle"))
1730 spin_lock_irqsave(&info->lock, flags);
1731 info->serial_signals &= ~SerialSignal_RTS;
1732 set_signals(info);
1733 spin_unlock_irqrestore(&info->lock, flags);
1741 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
1746 __FILE__, __LINE__, info->device_name);
1748 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_unthrottle"))
1752 if (info->x_char)
1753 info->x_char = 0;
1759 spin_lock_irqsave(&info->lock, flags);
1760 info->serial_signals |= SerialSignal_RTS;
1761 set_signals(info);
1762 spin_unlock_irqrestore(&info->lock, flags);
1768 static int get_stats(MGSLPC_INFO * info, struct mgsl_icount __user *user_icount)
1772 printk("get_params(%s)\n", info->device_name);
1774 memset(&info->icount, 0, sizeof(info->icount));
1776 COPY_TO_USER(err, user_icount, &info->icount, sizeof(struct mgsl_icount));
1785 static int get_params(MGSLPC_INFO * info, MGSL_PARAMS __user *user_params)
1789 printk("get_params(%s)\n", info->device_name);
1790 COPY_TO_USER(err,user_params, &info->params, sizeof(MGSL_PARAMS));
1800 * info pointer to device instance data
1805 static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params, struct tty_struct *tty)
1813 info->device_name);
1818 __FILE__, __LINE__, info->device_name);
1822 spin_lock_irqsave(&info->lock, flags);
1823 memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS));
1824 spin_unlock_irqrestore(&info->lock, flags);
1826 mgslpc_change_params(info, tty);
1831 static int get_txidle(MGSLPC_INFO * info, int __user *idle_mode)
1835 printk("get_txidle(%s)=%d\n", info->device_name, info->idle_mode);
1836 COPY_TO_USER(err,idle_mode, &info->idle_mode, sizeof(int));
1842 static int set_txidle(MGSLPC_INFO * info, int idle_mode)
1846 printk("set_txidle(%s,%d)\n", info->device_name, idle_mode);
1847 spin_lock_irqsave(&info->lock, flags);
1848 info->idle_mode = idle_mode;
1849 tx_set_idle(info);
1850 spin_unlock_irqrestore(&info->lock, flags);
1854 static int get_interface(MGSLPC_INFO * info, int __user *if_mode)
1858 printk("get_interface(%s)=%d\n", info->device_name, info->if_mode);
1859 COPY_TO_USER(err,if_mode, &info->if_mode, sizeof(int));
1865 static int set_interface(MGSLPC_INFO * info, int if_mode)
1870 printk("set_interface(%s,%d)\n", info->device_name, if_mode);
1871 spin_lock_irqsave(&info->lock, flags);
1872 info->if_mode = if_mode;
1874 val = read_reg(info, PVR) & 0x0f;
1875 switch (info->if_mode)
1881 write_reg(info, PVR, val);
1883 spin_unlock_irqrestore(&info->lock, flags);
1887 static int set_txenable(MGSLPC_INFO * info, int enable, struct tty_struct *tty)
1892 printk("set_txenable(%s,%d)\n", info->device_name, enable);
1894 spin_lock_irqsave(&info->lock, flags);
1896 if (!info->tx_enabled)
1897 tx_start(info, tty);
1899 if (info->tx_enabled)
1900 tx_stop(info);
1902 spin_unlock_irqrestore(&info->lock, flags);
1906 static int tx_abort(MGSLPC_INFO * info)
1911 printk("tx_abort(%s)\n", info->device_name);
1913 spin_lock_irqsave(&info->lock, flags);
1914 if (info->tx_active && info->tx_count &&
1915 info->params.mode == MGSL_MODE_HDLC) {
1919 info->tx_count = info->tx_put = info->tx_get = 0;
1920 info->tx_aborting = true;
1922 spin_unlock_irqrestore(&info->lock, flags);
1926 static int set_rxenable(MGSLPC_INFO * info, int enable)
1931 printk("set_rxenable(%s,%d)\n", info->device_name, enable);
1933 spin_lock_irqsave(&info->lock, flags);
1935 if (!info->rx_enabled)
1936 rx_start(info);
1938 if (info->rx_enabled)
1939 rx_stop(info);
1941 spin_unlock_irqrestore(&info->lock, flags);
1947 * Arguments: info pointer to device instance data
1953 static int wait_events(MGSLPC_INFO * info, int __user *mask_ptr)
1969 printk("wait_events(%s,%d)\n", info->device_name, mask);
1971 spin_lock_irqsave(&info->lock, flags);
1974 get_signals(info);
1975 s = info->serial_signals;
1982 spin_unlock_irqrestore(&info->lock, flags);
1987 cprev = info->icount;
1988 oldsigs = info->input_signal_events;
1990 if ((info->params.mode == MGSL_MODE_HDLC) &&
1992 irq_enable(info, CHA, IRQ_EXITHUNT);
1995 add_wait_queue(&info->event_wait_q, &wait);
1997 spin_unlock_irqrestore(&info->lock, flags);
2008 spin_lock_irqsave(&info->lock, flags);
2009 cnow = info->icount;
2010 newsigs = info->input_signal_events;
2012 spin_unlock_irqrestore(&info->lock, flags);
2047 remove_wait_queue(&info->event_wait_q, &wait);
2051 spin_lock_irqsave(&info->lock, flags);
2052 if (!waitqueue_active(&info->event_wait_q))
2053 irq_disable(info, CHA, IRQ_EXITHUNT);
2054 spin_unlock_irqrestore(&info->lock, flags);
2062 static int modem_input_wait(MGSLPC_INFO *info,int arg)
2070 spin_lock_irqsave(&info->lock, flags);
2071 cprev = info->icount;
2072 add_wait_queue(&info->status_event_wait_q, &wait);
2074 spin_unlock_irqrestore(&info->lock, flags);
2084 spin_lock_irqsave(&info->lock, flags);
2085 cnow = info->icount;
2087 spin_unlock_irqrestore(&info->lock, flags);
2107 remove_wait_queue(&info->status_event_wait_q, &wait);
2116 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
2120 spin_lock_irqsave(&info->lock, flags);
2121 get_signals(info);
2122 spin_unlock_irqrestore(&info->lock, flags);
2124 result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS:0) +
2125 ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR:0) +
2126 ((info->serial_signals & SerialSignal_DCD) ? TIOCM_CAR:0) +
2127 ((info->serial_signals & SerialSignal_RI) ? TIOCM_RNG:0) +
2128 ((info->serial_signals & SerialSignal_DSR) ? TIOCM_DSR:0) +
2129 ((info->serial_signals & SerialSignal_CTS) ? TIOCM_CTS:0);
2133 __FILE__, __LINE__, info->device_name, result);
2142 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
2147 __FILE__, __LINE__, info->device_name, set, clear);
2150 info->serial_signals |= SerialSignal_RTS;
2152 info->serial_signals |= SerialSignal_DTR;
2154 info->serial_signals &= ~SerialSignal_RTS;
2156 info->serial_signals &= ~SerialSignal_DTR;
2158 spin_lock_irqsave(&info->lock, flags);
2159 set_signals(info);
2160 spin_unlock_irqrestore(&info->lock, flags);
2172 MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
2177 __FILE__, __LINE__, info->device_name, break_state);
2179 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_break"))
2182 spin_lock_irqsave(&info->lock, flags);
2184 set_reg_bits(info, CHA+DAFO, BIT6);
2186 clear_reg_bits(info, CHA+DAFO, BIT6);
2187 spin_unlock_irqrestore(&info->lock, flags);
2194 MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
2198 spin_lock_irqsave(&info->lock, flags);
2199 cnow = info->icount;
2200 spin_unlock_irqrestore(&info->lock, flags);
2230 MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
2235 info->device_name, cmd);
2237 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_ioctl"))
2247 return get_params(info, argp);
2249 return set_params(info, argp, tty);
2251 return get_txidle(info, argp);
2253 return set_txidle(info, (int)arg);
2255 return get_interface(info, argp);
2257 return set_interface(info,(int)arg);
2259 return set_txenable(info,(int)arg, tty);
2261 return set_rxenable(info,(int)arg);
2263 return tx_abort(info);
2265 return get_stats(info, argp);
2267 return wait_events(info, argp);
2269 return modem_input_wait(info,(int)arg);
2285 MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
2298 mgslpc_change_params(info, tty);
2302 info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
2303 spin_lock_irqsave(&info->lock, flags);
2304 set_signals(info);
2305 spin_unlock_irqrestore(&info->lock, flags);
2310 info->serial_signals |= SerialSignal_DTR;
2312 info->serial_signals |= SerialSignal_RTS;
2313 spin_lock_irqsave(&info->lock, flags);
2314 set_signals(info);
2315 spin_unlock_irqrestore(&info->lock, flags);
2327 MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
2328 struct tty_port *port = &info->port;
2330 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_close"))
2335 __FILE__, __LINE__, info->device_name, port->count);
2341 mgslpc_wait_until_sent(tty, info->timeout);
2346 shutdown(info, tty);
2360 MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
2363 if (!info)
2368 __FILE__, __LINE__, info->device_name);
2370 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_wait_until_sent"))
2373 if (!tty_port_initialized(&info->port))
2384 if (info->params.data_rate) {
2385 char_time = info->timeout/(32 * 5);
2394 if (info->params.mode == MGSL_MODE_HDLC) {
2395 while (info->tx_active) {
2403 while ((info->tx_count || info->tx_active) &&
2404 info->tx_enabled) {
2416 __FILE__, __LINE__, info->device_name);
2424 MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
2428 __FILE__, __LINE__, info->device_name);
2430 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_hangup"))
2434 shutdown(info, tty);
2435 tty_port_hangup(&info->port);
2440 MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
2443 spin_lock_irqsave(&info->lock, flags);
2444 get_signals(info);
2445 spin_unlock_irqrestore(&info->lock, flags);
2447 if (info->serial_signals & SerialSignal_DCD)
2454 MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
2457 spin_lock_irqsave(&info->lock, flags);
2459 info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR;
2461 info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
2462 set_signals(info);
2463 spin_unlock_irqrestore(&info->lock, flags);
2469 MGSLPC_INFO *info;
2482 /* find the info structure for the specified line */
2483 info = mgslpc_device_list;
2484 while(info && info->line != line)
2485 info = info->next_device;
2486 if (mgslpc_paranoia_check(info, tty->name, "mgslpc_open"))
2489 port = &info->port;
2490 tty->driver_data = info;
2499 spin_lock_irqsave(&info->netlock, flags);
2500 if (info->netcount) {
2502 spin_unlock_irqrestore(&info->netlock, flags);
2508 spin_unlock_irqrestore(&info->netlock, flags);
2512 retval = startup(info, tty);
2517 retval = tty_port_block_til_ready(&info->port, tty, filp);
2521 __FILE__, __LINE__, info->device_name, retval);
2527 __FILE__, __LINE__, info->device_name);
2538 static inline void line_info(struct seq_file *m, MGSLPC_INFO *info)
2544 info->device_name, info->io_base, info->irq_level);
2547 spin_lock_irqsave(&info->lock, flags);
2548 get_signals(info);
2549 spin_unlock_irqrestore(&info->lock, flags);
2553 if (info->serial_signals & SerialSignal_RTS)
2555 if (info->serial_signals & SerialSignal_CTS)
2557 if (info->serial_signals & SerialSignal_DTR)
2559 if (info->serial_signals & SerialSignal_DSR)
2561 if (info->serial_signals & SerialSignal_DCD)
2563 if (info->serial_signals & SerialSignal_RI)
2566 if (info->params.mode == MGSL_MODE_HDLC) {
2568 info->icount.txok, info->icount.rxok);
2569 if (info->icount.txunder)
2570 seq_printf(m, " txunder:%d", info->icount.txunder);
2571 if (info->icount.txabort)
2572 seq_printf(m, " txabort:%d", info->icount.txabort);
2573 if (info->icount.rxshort)
2574 seq_printf(m, " rxshort:%d", info->icount.rxshort);
2575 if (info->icount.rxlong)
2576 seq_printf(m, " rxlong:%d", info->icount.rxlong);
2577 if (info->icount.rxover)
2578 seq_printf(m, " rxover:%d", info->icount.rxover);
2579 if (info->icount.rxcrc)
2580 seq_printf(m, " rxcrc:%d", info->icount.rxcrc);
2583 info->icount.tx, info->icount.rx);
2584 if (info->icount.frame)
2585 seq_printf(m, " fe:%d", info->icount.frame);
2586 if (info->icount.parity)
2587 seq_printf(m, " pe:%d", info->icount.parity);
2588 if (info->icount.brk)
2589 seq_printf(m, " brk:%d", info->icount.brk);
2590 if (info->icount.overrun)
2591 seq_printf(m, " oe:%d", info->icount.overrun);
2598 info->tx_active,info->bh_requested,info->bh_running,
2599 info->pending_bh);
2606 MGSLPC_INFO *info;
2610 info = mgslpc_device_list;
2611 while (info) {
2612 line_info(m, info);
2613 info = info->next_device;
2618 static int rx_alloc_buffers(MGSLPC_INFO *info)
2621 info->rx_buf_size = sizeof(RXBUF) + info->max_frame_size;
2624 info->rx_buf_total_size = info->rx_buf_size * 8;
2627 if (info->rx_buf_total_size > 0x10000)
2628 info->rx_buf_total_size = 0x10000;
2631 info->rx_buf_count = info->rx_buf_total_size / info->rx_buf_size;
2633 info->rx_buf = kmalloc(info->rx_buf_total_size, GFP_KERNEL);
2634 if (info->rx_buf == NULL)
2638 info->flag_buf = kzalloc(info->max_frame_size, GFP_KERNEL);
2639 if (!info->flag_buf) {
2640 kfree(info->rx_buf);
2641 info->rx_buf = NULL;
2645 rx_reset_buffers(info);
2649 static void rx_free_buffers(MGSLPC_INFO *info)
2651 kfree(info->rx_buf);
2652 info->rx_buf = NULL;
2653 kfree(info->flag_buf);
2654 info->flag_buf = NULL;
2657 static int claim_resources(MGSLPC_INFO *info)
2659 if (rx_alloc_buffers(info) < 0) {
2660 printk("Can't allocate rx buffer %s\n", info->device_name);
2661 release_resources(info);
2667 static void release_resources(MGSLPC_INFO *info)
2670 printk("release_resources(%s)\n", info->device_name);
2671 rx_free_buffers(info);
2677 * Arguments: info pointer to device instance data
2679 static int mgslpc_add_device(MGSLPC_INFO *info)
2685 info->next_device = NULL;
2686 info->line = mgslpc_device_count;
2687 sprintf(info->device_name,"ttySLP%d",info->line);
2689 if (info->line < MAX_DEVICE_COUNT) {
2690 if (maxframe[info->line])
2691 info->max_frame_size = maxframe[info->line];
2697 mgslpc_device_list = info;
2702 current_dev->next_device = info;
2705 if (info->max_frame_size < 4096)
2706 info->max_frame_size = 4096;
2707 else if (info->max_frame_size > 65535)
2708 info->max_frame_size = 65535;
2711 info->device_name, info->io_base, info->irq_level);
2714 ret = hdlcdev_init(info);
2719 tty_dev = tty_port_register_device(&info->port, serial_driver, info->line,
2720 &info->p_dev->dev);
2724 hdlcdev_exit(info);
2742 MGSLPC_INFO *info = mgslpc_device_list;
2745 while(info) {
2746 if (info == remove_info) {
2748 last->next_device = info->next_device;
2750 mgslpc_device_list = info->next_device;
2751 tty_unregister_device(serial_driver, info->line);
2753 hdlcdev_exit(info);
2755 release_resources(info);
2756 tty_port_destroy(&info->port);
2757 kfree(info);
2761 last = info;
2762 info = info->next_device;
2869 static void mgslpc_set_rate(MGSLPC_INFO *info, unsigned char channel, unsigned int rate)
2895 write_reg(info, (unsigned char) (channel + BGR),
2897 val = read_reg(info, (unsigned char) (channel + CCR2)) & 0x3f;
2899 write_reg(info, (unsigned char) (channel + CCR2), val);
2905 static void enable_auxclk(MGSLPC_INFO *info)
2924 if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed)
2926 write_reg(info, CHB + MODE, val);
2938 write_reg(info, CHB + CCR0, 0xc0);
2951 write_reg(info, CHB + CCR1, 0x17);
2965 if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed)
2966 write_reg(info, CHB + CCR2, 0x38);
2968 write_reg(info, CHB + CCR2, 0x30);
2981 write_reg(info, CHB + CCR4, 0x50);
2986 if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed)
2987 mgslpc_set_rate(info, CHB, info->params.clock_speed);
2989 mgslpc_set_rate(info, CHB, 921600);
2992 static void loopback_enable(MGSLPC_INFO *info)
2997 val = read_reg(info, CHA + CCR1) | (BIT2 | BIT1 | BIT0);
2998 write_reg(info, CHA + CCR1, val);
3001 val = read_reg(info, CHA + CCR2) | (BIT4 | BIT5);
3002 write_reg(info, CHA + CCR2, val);
3005 if (info->params.clock_speed)
3006 mgslpc_set_rate(info, CHA, info->params.clock_speed);
3008 mgslpc_set_rate(info, CHA, 1843200);
3011 val = read_reg(info, CHA + MODE) | BIT0;
3012 write_reg(info, CHA + MODE, val);
3015 static void hdlc_mode(MGSLPC_INFO *info)
3021 irq_disable(info, CHA, 0xffff);
3022 irq_disable(info, CHB, 0xffff);
3023 port_irq_disable(info, 0xff);
3027 if (info->params.flags & HDLC_FLAG_RXC_DPLL
3028 && info->params.flags & HDLC_FLAG_TXC_DPLL) {
3031 } else if (info->params.flags & HDLC_FLAG_RXC_BRG
3032 && info->params.flags & HDLC_FLAG_TXC_BRG) {
3036 } else if (info->params.flags & HDLC_FLAG_RXC_DPLL) {
3037 if (info->params.flags & HDLC_FLAG_TXC_BRG) {
3045 } else if (info->params.flags & HDLC_FLAG_TXC_BRG) {
3063 if (info->params.loopback)
3067 if (info->serial_signals & SerialSignal_RTS)
3069 write_reg(info, CHA + MODE, val);
3082 switch (info->params.encoding)
3097 write_reg(info, CHA + CCR0, val);
3111 write_reg(info, CHA + CCR1, val);
3131 if (info->params.crc_type == HDLC_CRC_32_CCITT)
3133 if (info->params.encoding == HDLC_ENCODING_NRZB)
3135 write_reg(info, CHA + CCR2, val);
3150 if (info->params.crc_type == HDLC_CRC_NONE)
3152 if (info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE)
3154 switch (info->params.preamble_length)
3166 write_reg(info, CHA + CCR3, val);
3170 switch (info->params.preamble)
3177 write_reg(info, CHA + PRE, val);
3191 write_reg(info, CHA + CCR4, val);
3192 if (info->params.flags & HDLC_FLAG_RXC_DPLL)
3193 mgslpc_set_rate(info, CHA, info->params.clock_speed * 16);
3195 mgslpc_set_rate(info, CHA, info->params.clock_speed);
3202 write_reg(info, CHA + RLCR, 0);
3215 if (info->params.flags & HDLC_FLAG_AUTO_DCD)
3217 write_reg(info, CHA + XBCH, val);
3218 enable_auxclk(info);
3219 if (info->params.loopback || info->testing_irq)
3220 loopback_enable(info);
3221 if (info->params.flags & HDLC_FLAG_AUTO_CTS)
3223 irq_enable(info, CHB, IRQ_CTS);
3225 set_reg_bits(info, CHA + PVR, BIT3);
3227 clear_reg_bits(info, CHA + PVR, BIT3);
3229 irq_enable(info, CHA,
3232 issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET);
3233 wait_command_complete(info, CHA);
3234 read_reg16(info, CHA + ISR); /* clear pending IRQs */
3246 if (!info->testing_irq)
3247 clear_reg_bits(info, CHA + CCR0, BIT6);
3249 tx_set_idle(info);
3251 tx_stop(info);
3252 rx_stop(info);
3255 static void rx_stop(MGSLPC_INFO *info)
3259 __FILE__, __LINE__, info->device_name);
3262 clear_reg_bits(info, CHA + MODE, BIT3);
3264 info->rx_enabled = false;
3265 info->rx_overflow = false;
3268 static void rx_start(MGSLPC_INFO *info)
3272 __FILE__, __LINE__, info->device_name);
3274 rx_reset_buffers(info);
3275 info->rx_enabled = false;
3276 info->rx_overflow = false;
3279 set_reg_bits(info, CHA + MODE, BIT3);
3281 info->rx_enabled = true;
3284 static void tx_start(MGSLPC_INFO *info, struct tty_struct *tty)
3288 __FILE__, __LINE__, info->device_name);
3290 if (info->tx_count) {
3294 info->drop_rts_on_tx_done = false;
3296 if (info->params.flags & HDLC_FLAG_AUTO_RTS) {
3297 get_signals(info);
3298 if (!(info->serial_signals & SerialSignal_RTS)) {
3299 info->serial_signals |= SerialSignal_RTS;
3300 set_signals(info);
3301 info->drop_rts_on_tx_done = true;
3305 if (info->params.mode == MGSL_MODE_ASYNC) {
3306 if (!info->tx_active) {
3307 info->tx_active = true;
3308 tx_ready(info, tty);
3311 info->tx_active = true;
3312 tx_ready(info, tty);
3313 mod_timer(&info->tx_timer, jiffies +
3318 if (!info->tx_enabled)
3319 info->tx_enabled = true;
3322 static void tx_stop(MGSLPC_INFO *info)
3326 __FILE__, __LINE__, info->device_name);
3328 del_timer(&info->tx_timer);
3330 info->tx_enabled = false;
3331 info->tx_active = false;
3336 static void reset_device(MGSLPC_INFO *info)
3339 write_reg(info, CHA + CCR0, 0x80);
3340 write_reg(info, CHB + CCR0, 0x80);
3341 write_reg(info, CHA + MODE, 0);
3342 write_reg(info, CHB + MODE, 0);
3345 irq_disable(info, CHA, 0xffff);
3346 irq_disable(info, CHB, 0xffff);
3347 port_irq_disable(info, 0xff);
3359 write_reg(info, PCR, 0x06);
3371 // write_reg(info, PVR, PVR_DTR);
3383 write_reg(info, IPC, 0x05);
3386 static void async_mode(MGSLPC_INFO *info)
3391 irq_disable(info, CHA, 0xffff);
3392 irq_disable(info, CHB, 0xffff);
3393 port_irq_disable(info, 0xff);
3409 if (info->params.loopback)
3413 if (!(info->serial_signals & SerialSignal_RTS))
3415 write_reg(info, CHA + MODE, val);
3427 write_reg(info, CHA + CCR0, 0x83);
3438 write_reg(info, CHA + CCR1, 0x1f);
3452 write_reg(info, CHA + CCR2, 0x10);
3461 write_reg(info, CHA + CCR3, 0);
3473 write_reg(info, CHA + CCR4, 0x50);
3474 mgslpc_set_rate(info, CHA, info->params.data_rate * 16);
3487 if (info->params.data_bits != 8)
3489 if (info->params.stop_bits != 1)
3491 if (info->params.parity != ASYNC_PARITY_NONE)
3494 if (info->params.parity == ASYNC_PARITY_ODD)
3499 write_reg(info, CHA + DAFO, val);
3513 write_reg(info, CHA + RFC, 0x5c);
3519 write_reg(info, CHA + RLCR, 0);
3532 if (info->params.flags & HDLC_FLAG_AUTO_DCD)
3534 write_reg(info, CHA + XBCH, val);
3535 if (info->params.flags & HDLC_FLAG_AUTO_CTS)
3536 irq_enable(info, CHA, IRQ_CTS);
3539 set_reg_bits(info, CHA + MODE, BIT3);
3540 enable_auxclk(info);
3541 if (info->params.flags & HDLC_FLAG_AUTO_CTS) {
3542 irq_enable(info, CHB, IRQ_CTS);
3544 set_reg_bits(info, CHA + PVR, BIT3);
3546 clear_reg_bits(info, CHA + PVR, BIT3);
3547 irq_enable(info, CHA,
3550 issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET);
3551 wait_command_complete(info, CHA);
3552 read_reg16(info, CHA + ISR); /* clear pending IRQs */
3557 static void tx_set_idle(MGSLPC_INFO *info)
3560 if (info->idle_mode == HDLC_TXIDLE_FLAGS)
3561 set_reg_bits(info, CHA + CCR1, BIT3);
3563 clear_reg_bits(info, CHA + CCR1, BIT3);
3568 static void get_signals(MGSLPC_INFO *info)
3573 info->serial_signals &= SerialSignal_RTS | SerialSignal_DTR;
3575 if (read_reg(info, CHB + VSTR) & BIT7)
3576 info->serial_signals |= SerialSignal_DCD;
3577 if (read_reg(info, CHB + STAR) & BIT1)
3578 info->serial_signals |= SerialSignal_CTS;
3580 status = read_reg(info, CHA + PVR);
3582 info->serial_signals |= SerialSignal_RI;
3584 info->serial_signals |= SerialSignal_DSR;
3590 static void set_signals(MGSLPC_INFO *info)
3594 val = read_reg(info, CHA + MODE);
3595 if (info->params.mode == MGSL_MODE_ASYNC) {
3596 if (info->serial_signals & SerialSignal_RTS)
3601 if (info->serial_signals & SerialSignal_RTS)
3606 write_reg(info, CHA + MODE, val);
3608 if (info->serial_signals & SerialSignal_DTR)
3609 clear_reg_bits(info, CHA + PVR, PVR_DTR);
3611 set_reg_bits(info, CHA + PVR, PVR_DTR);
3614 static void rx_reset_buffers(MGSLPC_INFO *info)
3619 info->rx_put = 0;
3620 info->rx_get = 0;
3621 info->rx_frame_count = 0;
3622 for (i=0 ; i < info->rx_buf_count ; i++) {
3623 buf = (RXBUF*)(info->rx_buf + (i * info->rx_buf_size));
3633 static bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty)
3641 if (info->rx_frame_count == 0)
3644 buf = (RXBUF*)(info->rx_buf + (info->rx_get * info->rx_buf_size));
3655 info->icount.rxabort++;
3657 info->icount.rxover++;
3659 info->icount.rxcrc++;
3660 if (info->params.crc_type & HDLC_CRC_RETURN_EX)
3666 info->netdev->stats.rx_errors++;
3667 info->netdev->stats.rx_frame_errors++;
3678 __FILE__, __LINE__, info->device_name, status, framesize);
3681 trace_block(info, buf->data, framesize, 0);
3684 if ((info->params.crc_type & HDLC_CRC_RETURN_EX &&
3685 framesize+1 > info->max_frame_size) ||
3686 framesize > info->max_frame_size)
3687 info->icount.rxlong++;
3690 info->icount.rxok++;
3692 if (info->params.crc_type & HDLC_CRC_RETURN_EX) {
3698 if (info->netcount)
3699 hdlcdev_rx(info, buf->data, framesize);
3702 ldisc_receive_buf(tty, buf->data, info->flag_buf, framesize);
3706 spin_lock_irqsave(&info->lock, flags);
3708 info->rx_frame_count--;
3709 info->rx_get++;
3710 if (info->rx_get >= info->rx_buf_count)
3711 info->rx_get = 0;
3712 spin_unlock_irqrestore(&info->lock, flags);
3717 static bool register_test(MGSLPC_INFO *info)
3726 spin_lock_irqsave(&info->lock, flags);
3727 reset_device(info);
3730 write_reg(info, XAD1, patterns[i]);
3731 write_reg(info, XAD2, patterns[(i + 1) % count]);
3732 if ((read_reg(info, XAD1) != patterns[i]) ||
3733 (read_reg(info, XAD2) != patterns[(i + 1) % count])) {
3739 spin_unlock_irqrestore(&info->lock, flags);
3743 static bool irq_test(MGSLPC_INFO *info)
3748 spin_lock_irqsave(&info->lock, flags);
3749 reset_device(info);
3751 info->testing_irq = true;
3752 hdlc_mode(info);
3754 info->irq_occurred = false;
3758 irq_enable(info, CHA, IRQ_TIMER);
3759 write_reg(info, CHA + TIMR, 0); /* 512 cycles */
3760 issue_command(info, CHA, CMD_START_TIMER);
3762 spin_unlock_irqrestore(&info->lock, flags);
3765 while(end_time-- && !info->irq_occurred) {
3769 info->testing_irq = false;
3771 spin_lock_irqsave(&info->lock, flags);
3772 reset_device(info);
3773 spin_unlock_irqrestore(&info->lock, flags);
3775 return info->irq_occurred;
3778 static int adapter_test(MGSLPC_INFO *info)
3780 if (!register_test(info)) {
3781 info->init_error = DiagStatus_AddressFailure;
3783 __FILE__, __LINE__, info->device_name, (unsigned short)(info->io_base));
3787 if (!irq_test(info)) {
3788 info->init_error = DiagStatus_IrqFailure;
3790 __FILE__, __LINE__, info->device_name, (unsigned short)(info->irq_level));
3796 __FILE__, __LINE__, info->device_name);
3800 static void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit)
3805 printk("%s tx data:\n", info->device_name);
3807 printk("%s rx data:\n", info->device_name);
3837 MGSLPC_INFO *info = from_timer(info, t, tx_timer);
3842 __FILE__, __LINE__, info->device_name);
3843 if (info->tx_active &&
3844 info->params.mode == MGSL_MODE_HDLC) {
3845 info->icount.txtimeout++;
3847 spin_lock_irqsave(&info->lock, flags);
3848 info->tx_active = false;
3849 info->tx_count = info->tx_put = info->tx_get = 0;
3851 spin_unlock_irqrestore(&info->lock, flags);
3854 if (info->netcount)
3855 hdlcdev_tx_done(info);
3859 struct tty_struct *tty = tty_port_tty_get(&info->port);
3860 bh_transmit(info, tty);
3880 MGSLPC_INFO *info = dev_to_port(dev);
3886 if (info->port.count)
3907 info->params.encoding = new_encoding;
3908 info->params.crc_type = new_crctype;
3911 if (info->netcount) {
3912 tty = tty_port_tty_get(&info->port);
3913 mgslpc_program_hw(info, tty);
3929 MGSLPC_INFO *info = dev_to_port(dev);
3939 skb_copy_from_linear_data(skb, info->tx_buf, skb->len);
3940 info->tx_get = 0;
3941 info->tx_put = info->tx_count = skb->len;
3954 spin_lock_irqsave(&info->lock, flags);
3955 if (!info->tx_active) {
3956 struct tty_struct *tty = tty_port_tty_get(&info->port);
3957 tx_start(info, tty);
3960 spin_unlock_irqrestore(&info->lock, flags);
3975 MGSLPC_INFO *info = dev_to_port(dev);
3989 spin_lock_irqsave(&info->netlock, flags);
3990 if (info->port.count != 0 || info->netcount != 0) {
3992 spin_unlock_irqrestore(&info->netlock, flags);
3995 info->netcount=1;
3996 spin_unlock_irqrestore(&info->netlock, flags);
3998 tty = tty_port_tty_get(&info->port);
4000 rc = startup(info, tty);
4003 spin_lock_irqsave(&info->netlock, flags);
4004 info->netcount=0;
4005 spin_unlock_irqrestore(&info->netlock, flags);
4009 info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR;
4010 mgslpc_program_hw(info, tty);
4018 spin_lock_irqsave(&info->lock, flags);
4019 get_signals(info);
4020 spin_unlock_irqrestore(&info->lock, flags);
4021 if (info->serial_signals & SerialSignal_DCD)
4038 MGSLPC_INFO *info = dev_to_port(dev);
4039 struct tty_struct *tty = tty_port_tty_get(&info->port);
4048 shutdown(info, tty);
4052 spin_lock_irqsave(&info->netlock, flags);
4053 info->netcount=0;
4054 spin_unlock_irqrestore(&info->netlock, flags);
4073 MGSLPC_INFO *info = dev_to_port(dev);
4080 if (info->port.count)
4097 flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL |
4110 new_line.clock_rate = info->params.clock_speed;
4111 new_line.loopback = info->params.loopback ? 1:0;
4130 case CLOCK_DEFAULT: flags = info->params.flags &
4141 info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL |
4145 info->params.flags |= flags;
4147 info->params.loopback = new_line.loopback;
4150 info->params.clock_speed = new_line.clock_rate;
4152 info->params.clock_speed = 0;
4155 if (info->netcount) {
4156 struct tty_struct *tty = tty_port_tty_get(&info->port);
4157 mgslpc_program_hw(info, tty);
4174 MGSLPC_INFO *info = dev_to_port(dev);
4183 spin_lock_irqsave(&info->lock, flags);
4184 tx_stop(info);
4185 spin_unlock_irqrestore(&info->lock, flags);
4194 * info pointer to device instance information
4196 static void hdlcdev_tx_done(MGSLPC_INFO *info)
4198 if (netif_queue_stopped(info->netdev))
4199 netif_wake_queue(info->netdev);
4206 * info pointer to device instance information
4210 static void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size)
4213 struct net_device *dev = info->netdev;
4246 * info pointer to device instance information
4250 static int hdlcdev_init(MGSLPC_INFO *info)
4258 dev = alloc_hdlcdev(info);
4265 dev->base_addr = info->io_base;
4266 dev->irq = info->irq_level;
4286 info->netdev = dev;
4294 * info pointer to device instance information
4296 static void hdlcdev_exit(MGSLPC_INFO *info)
4298 unregister_hdlc_device(info->netdev);
4299 free_netdev(info->netdev);
4300 info->netdev = NULL;