Lines Matching refs:info
41 #define DBGDATA(info, buf, size, label) if (debug_level >= DEBUG_LEVEL_DATA) trace_block((info), (buf), (size), (label))
42 /*#define DBGTBUF(info) dump_tbufs(info)*/
43 /*#define DBGRBUF(info) dump_rbufs(info)*/
395 #define slgt_irq_on(info, mask) \
396 wr_reg16((info), SCR, (unsigned short)(rd_reg16((info), SCR) | (mask)))
397 #define slgt_irq_off(info, mask) \
398 wr_reg16((info), SCR, (unsigned short)(rd_reg16((info), SCR) & ~(mask)))
400 static __u8 rd_reg8(struct slgt_info *info, unsigned int addr);
401 static void wr_reg8(struct slgt_info *info, unsigned int addr, __u8 value);
402 static __u16 rd_reg16(struct slgt_info *info, unsigned int addr);
403 static void wr_reg16(struct slgt_info *info, unsigned int addr, __u16 value);
404 static __u32 rd_reg32(struct slgt_info *info, unsigned int addr);
405 static void wr_reg32(struct slgt_info *info, unsigned int addr, __u32 value);
407 static void msc_set_vcr(struct slgt_info *info);
409 static int startup(struct slgt_info *info);
410 static int block_til_ready(struct tty_struct *tty, struct file * filp,struct slgt_info *info);
411 static void shutdown(struct slgt_info *info);
412 static void program_hw(struct slgt_info *info);
413 static void change_params(struct slgt_info *info);
415 static int adapter_test(struct slgt_info *info);
417 static void reset_port(struct slgt_info *info);
418 static void async_mode(struct slgt_info *info);
419 static void sync_mode(struct slgt_info *info);
421 static void rx_stop(struct slgt_info *info);
422 static void rx_start(struct slgt_info *info);
423 static void reset_rbufs(struct slgt_info *info);
424 static void free_rbufs(struct slgt_info *info, unsigned int first, unsigned int last);
425 static bool rx_get_frame(struct slgt_info *info);
426 static bool rx_get_buf(struct slgt_info *info);
428 static void tx_start(struct slgt_info *info);
429 static void tx_stop(struct slgt_info *info);
430 static void tx_set_idle(struct slgt_info *info);
431 static unsigned int tbuf_bytes(struct slgt_info *info);
432 static void reset_tbufs(struct slgt_info *info);
433 static void tdma_reset(struct slgt_info *info);
434 static bool tx_load(struct slgt_info *info, const u8 *buf, unsigned int count);
436 static void get_gtsignals(struct slgt_info *info);
437 static void set_gtsignals(struct slgt_info *info);
438 static void set_rate(struct slgt_info *info, u32 data_rate);
440 static void bh_transmit(struct slgt_info *info);
441 static void isr_txeom(struct slgt_info *info, unsigned short status);
449 static int get_stats(struct slgt_info *info, struct mgsl_icount __user *user_icount);
450 static int get_params(struct slgt_info *info, MGSL_PARAMS __user *params);
451 static int set_params(struct slgt_info *info, MGSL_PARAMS __user *params);
452 static int get_txidle(struct slgt_info *info, int __user *idle_mode);
453 static int set_txidle(struct slgt_info *info, int idle_mode);
454 static int tx_enable(struct slgt_info *info, int enable);
455 static int tx_abort(struct slgt_info *info);
456 static int rx_enable(struct slgt_info *info, int enable);
457 static int modem_input_wait(struct slgt_info *info,int arg);
458 static int wait_mgsl_event(struct slgt_info *info, int __user *mask_ptr);
459 static int get_interface(struct slgt_info *info, int __user *if_mode);
460 static int set_interface(struct slgt_info *info, int if_mode);
461 static int set_gpio(struct slgt_info *info, struct gpio_desc __user *gpio);
462 static int get_gpio(struct slgt_info *info, struct gpio_desc __user *gpio);
463 static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *gpio);
464 static int get_xsync(struct slgt_info *info, int __user *if_mode);
465 static int set_xsync(struct slgt_info *info, int if_mode);
466 static int get_xctrl(struct slgt_info *info, int __user *if_mode);
467 static int set_xctrl(struct slgt_info *info, int if_mode);
472 static void release_resources(struct slgt_info *info);
491 static void trace_block(struct slgt_info *info, const char *data, int count, const char *label)
495 printk("%s %s data:\n",info->device_name, label);
514 #define DBGDATA(info, buf, size, label)
518 static void dump_tbufs(struct slgt_info *info)
521 printk("tbuf_current=%d\n", info->tbuf_current);
522 for (i=0 ; i < info->tbuf_count ; i++) {
524 i, le16_to_cpu(info->tbufs[i].count), le16_to_cpu(info->tbufs[i].status));
528 #define DBGTBUF(info)
532 static void dump_rbufs(struct slgt_info *info)
535 printk("rbuf_current=%d\n", info->rbuf_current);
536 for (i=0 ; i < info->rbuf_count ; i++) {
538 i, le16_to_cpu(info->rbufs[i].count), le16_to_cpu(info->rbufs[i].status));
542 #define DBGRBUF(info)
545 static inline int sanity_check(struct slgt_info *info, char *devname, const char *name)
548 if (!info) {
553 if (!info)
585 struct slgt_info *info;
595 info = slgt_device_list;
596 while(info && info->line != line)
597 info = info->next_device;
598 if (sanity_check(info, tty->name, "open"))
600 if (info->init_error) {
601 DBGERR(("%s init error=%d\n", info->device_name, info->init_error));
605 tty->driver_data = info;
606 info->port.tty = tty;
608 DBGINFO(("%s open, old ref count = %d\n", info->device_name, info->port.count));
610 mutex_lock(&info->port.mutex);
612 spin_lock_irqsave(&info->netlock, flags);
613 if (info->netcount) {
615 spin_unlock_irqrestore(&info->netlock, flags);
616 mutex_unlock(&info->port.mutex);
619 info->port.count++;
620 spin_unlock_irqrestore(&info->netlock, flags);
622 if (info->port.count == 1) {
624 retval = startup(info);
626 mutex_unlock(&info->port.mutex);
630 mutex_unlock(&info->port.mutex);
631 retval = block_til_ready(tty, filp, info);
633 DBGINFO(("%s block_til_ready rc=%d\n", info->device_name, retval));
642 info->port.tty = NULL; /* tty layer will release tty struct */
643 if(info->port.count)
644 info->port.count--;
647 DBGINFO(("%s open rc=%d\n", info->device_name, retval));
653 struct slgt_info *info = tty->driver_data;
655 if (sanity_check(info, tty->name, "close"))
657 DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count));
659 if (tty_port_close_start(&info->port, tty, filp) == 0)
662 mutex_lock(&info->port.mutex);
663 if (tty_port_initialized(&info->port))
664 wait_until_sent(tty, info->timeout);
668 shutdown(info);
669 mutex_unlock(&info->port.mutex);
671 tty_port_close_end(&info->port, tty);
672 info->port.tty = NULL;
674 DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count));
679 struct slgt_info *info = tty->driver_data;
682 if (sanity_check(info, tty->name, "hangup"))
684 DBGINFO(("%s hangup\n", info->device_name));
688 mutex_lock(&info->port.mutex);
689 shutdown(info);
691 spin_lock_irqsave(&info->port.lock, flags);
692 info->port.count = 0;
693 info->port.tty = NULL;
694 spin_unlock_irqrestore(&info->port.lock, flags);
695 tty_port_set_active(&info->port, false);
696 mutex_unlock(&info->port.mutex);
698 wake_up_interruptible(&info->port.open_wait);
704 struct slgt_info *info = tty->driver_data;
709 change_params(info);
713 info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
714 spin_lock_irqsave(&info->lock,flags);
715 set_gtsignals(info);
716 spin_unlock_irqrestore(&info->lock,flags);
721 info->signals |= SerialSignal_DTR;
723 info->signals |= SerialSignal_RTS;
724 spin_lock_irqsave(&info->lock,flags);
725 set_gtsignals(info);
726 spin_unlock_irqrestore(&info->lock,flags);
736 static void update_tx_timer(struct slgt_info *info)
742 if (info->params.mode == MGSL_MODE_HDLC) {
743 int timeout = (tbuf_bytes(info) * 7) + 1000;
744 mod_timer(&info->tx_timer, jiffies + msecs_to_jiffies(timeout));
751 struct slgt_info *info = tty->driver_data;
754 if (sanity_check(info, tty->name, "write"))
757 DBGINFO(("%s write count=%zu\n", info->device_name, count));
759 if (!info->tx_buf || (count > info->max_frame_size))
765 spin_lock_irqsave(&info->lock, flags);
767 if (info->tx_count) {
769 if (!tx_load(info, info->tx_buf, info->tx_count))
771 info->tx_count = 0;
774 if (tx_load(info, buf, count))
778 spin_unlock_irqrestore(&info->lock, flags);
779 DBGINFO(("%s write rc=%d\n", info->device_name, ret));
785 struct slgt_info *info = tty->driver_data;
789 if (sanity_check(info, tty->name, "put_char"))
791 DBGINFO(("%s put_char(%u)\n", info->device_name, ch));
792 if (!info->tx_buf)
794 spin_lock_irqsave(&info->lock,flags);
795 if (info->tx_count < info->max_frame_size) {
796 info->tx_buf[info->tx_count++] = ch;
799 spin_unlock_irqrestore(&info->lock,flags);
805 struct slgt_info *info = tty->driver_data;
808 if (sanity_check(info, tty->name, "send_xchar"))
810 DBGINFO(("%s send_xchar(%d)\n", info->device_name, ch));
811 info->x_char = ch;
813 spin_lock_irqsave(&info->lock,flags);
814 if (!info->tx_enabled)
815 tx_start(info);
816 spin_unlock_irqrestore(&info->lock,flags);
822 struct slgt_info *info = tty->driver_data;
825 if (!info )
827 if (sanity_check(info, tty->name, "wait_until_sent"))
829 DBGINFO(("%s wait_until_sent entry\n", info->device_name));
830 if (!tty_port_initialized(&info->port))
841 if (info->params.data_rate) {
842 char_time = info->timeout/(32 * 5);
851 while (info->tx_active) {
859 DBGINFO(("%s wait_until_sent exit\n", info->device_name));
864 struct slgt_info *info = tty->driver_data;
867 if (sanity_check(info, tty->name, "write_room"))
869 ret = (info->tx_active) ? 0 : HDLC_MAX_FRAME_SIZE;
870 DBGINFO(("%s write_room=%u\n", info->device_name, ret));
876 struct slgt_info *info = tty->driver_data;
879 if (sanity_check(info, tty->name, "flush_chars"))
881 DBGINFO(("%s flush_chars entry tx_count=%d\n", info->device_name, info->tx_count));
883 if (info->tx_count <= 0 || tty->flow.stopped ||
884 tty->hw_stopped || !info->tx_buf)
887 DBGINFO(("%s flush_chars start transmit\n", info->device_name));
889 spin_lock_irqsave(&info->lock,flags);
890 if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count))
891 info->tx_count = 0;
892 spin_unlock_irqrestore(&info->lock,flags);
897 struct slgt_info *info = tty->driver_data;
900 if (sanity_check(info, tty->name, "flush_buffer"))
902 DBGINFO(("%s flush_buffer\n", info->device_name));
904 spin_lock_irqsave(&info->lock, flags);
905 info->tx_count = 0;
906 spin_unlock_irqrestore(&info->lock, flags);
916 struct slgt_info *info = tty->driver_data;
919 if (sanity_check(info, tty->name, "tx_hold"))
921 DBGINFO(("%s tx_hold\n", info->device_name));
922 spin_lock_irqsave(&info->lock,flags);
923 if (info->tx_enabled && info->params.mode == MGSL_MODE_ASYNC)
924 tx_stop(info);
925 spin_unlock_irqrestore(&info->lock,flags);
933 struct slgt_info *info = tty->driver_data;
936 if (sanity_check(info, tty->name, "tx_release"))
938 DBGINFO(("%s tx_release\n", info->device_name));
939 spin_lock_irqsave(&info->lock, flags);
940 if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count))
941 info->tx_count = 0;
942 spin_unlock_irqrestore(&info->lock, flags);
959 struct slgt_info *info = tty->driver_data;
963 if (sanity_check(info, tty->name, "ioctl"))
965 DBGINFO(("%s ioctl() cmd=%08X\n", info->device_name, cmd));
974 return wait_mgsl_event(info, argp);
976 return modem_input_wait(info,(int)arg);
978 return set_gpio(info, argp);
980 return get_gpio(info, argp);
982 return wait_gpio(info, argp);
984 return get_xsync(info, argp);
986 return set_xsync(info, (int)arg);
988 return get_xctrl(info, argp);
990 return set_xctrl(info, (int)arg);
992 mutex_lock(&info->port.mutex);
995 ret = get_params(info, argp);
998 ret = set_params(info, argp);
1001 ret = get_txidle(info, argp);
1004 ret = set_txidle(info, (int)arg);
1007 ret = tx_enable(info, (int)arg);
1010 ret = rx_enable(info, (int)arg);
1013 ret = tx_abort(info);
1016 ret = get_stats(info, argp);
1019 ret = get_interface(info, argp);
1022 ret = set_interface(info,(int)arg);
1027 mutex_unlock(&info->port.mutex);
1035 struct slgt_info *info = tty->driver_data;
1039 spin_lock_irqsave(&info->lock,flags);
1040 cnow = info->icount;
1041 spin_unlock_irqrestore(&info->lock,flags);
1062 static long get_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *user_params)
1066 DBGINFO(("%s get_params32\n", info->device_name));
1068 tmp_params.mode = (compat_ulong_t)info->params.mode;
1069 tmp_params.loopback = info->params.loopback;
1070 tmp_params.flags = info->params.flags;
1071 tmp_params.encoding = info->params.encoding;
1072 tmp_params.clock_speed = (compat_ulong_t)info->params.clock_speed;
1073 tmp_params.addr_filter = info->params.addr_filter;
1074 tmp_params.crc_type = info->params.crc_type;
1075 tmp_params.preamble_length = info->params.preamble_length;
1076 tmp_params.preamble = info->params.preamble;
1077 tmp_params.data_rate = (compat_ulong_t)info->params.data_rate;
1078 tmp_params.data_bits = info->params.data_bits;
1079 tmp_params.stop_bits = info->params.stop_bits;
1080 tmp_params.parity = info->params.parity;
1086 static long set_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *new_params)
1091 DBGINFO(("%s set_params32\n", info->device_name));
1095 spin_lock_irqsave(&info->lock, flags);
1097 info->base_clock = tmp_params.clock_speed;
1099 info->params.mode = tmp_params.mode;
1100 info->params.loopback = tmp_params.loopback;
1101 info->params.flags = tmp_params.flags;
1102 info->params.encoding = tmp_params.encoding;
1103 info->params.clock_speed = tmp_params.clock_speed;
1104 info->params.addr_filter = tmp_params.addr_filter;
1105 info->params.crc_type = tmp_params.crc_type;
1106 info->params.preamble_length = tmp_params.preamble_length;
1107 info->params.preamble = tmp_params.preamble;
1108 info->params.data_rate = tmp_params.data_rate;
1109 info->params.data_bits = tmp_params.data_bits;
1110 info->params.stop_bits = tmp_params.stop_bits;
1111 info->params.parity = tmp_params.parity;
1113 spin_unlock_irqrestore(&info->lock, flags);
1115 program_hw(info);
1123 struct slgt_info *info = tty->driver_data;
1126 if (sanity_check(info, tty->name, "compat_ioctl"))
1128 DBGINFO(("%s compat_ioctl() cmd=%08X\n", info->device_name, cmd));
1132 rc = set_params32(info, compat_ptr(arg));
1136 rc = get_params32(info, compat_ptr(arg));
1155 DBGINFO(("%s compat_ioctl() cmd=%08X rc=%d\n", info->device_name, cmd, rc));
1165 static inline void line_info(struct seq_file *m, struct slgt_info *info)
1171 info->device_name, info->phys_reg_addr,
1172 info->irq_level, info->max_frame_size);
1175 spin_lock_irqsave(&info->lock,flags);
1176 get_gtsignals(info);
1177 spin_unlock_irqrestore(&info->lock,flags);
1181 if (info->signals & SerialSignal_RTS)
1183 if (info->signals & SerialSignal_CTS)
1185 if (info->signals & SerialSignal_DTR)
1187 if (info->signals & SerialSignal_DSR)
1189 if (info->signals & SerialSignal_DCD)
1191 if (info->signals & SerialSignal_RI)
1194 if (info->params.mode != MGSL_MODE_ASYNC) {
1196 info->icount.txok, info->icount.rxok);
1197 if (info->icount.txunder)
1198 seq_printf(m, " txunder:%d", info->icount.txunder);
1199 if (info->icount.txabort)
1200 seq_printf(m, " txabort:%d", info->icount.txabort);
1201 if (info->icount.rxshort)
1202 seq_printf(m, " rxshort:%d", info->icount.rxshort);
1203 if (info->icount.rxlong)
1204 seq_printf(m, " rxlong:%d", info->icount.rxlong);
1205 if (info->icount.rxover)
1206 seq_printf(m, " rxover:%d", info->icount.rxover);
1207 if (info->icount.rxcrc)
1208 seq_printf(m, " rxcrc:%d", info->icount.rxcrc);
1211 info->icount.tx, info->icount.rx);
1212 if (info->icount.frame)
1213 seq_printf(m, " fe:%d", info->icount.frame);
1214 if (info->icount.parity)
1215 seq_printf(m, " pe:%d", info->icount.parity);
1216 if (info->icount.brk)
1217 seq_printf(m, " brk:%d", info->icount.brk);
1218 if (info->icount.overrun)
1219 seq_printf(m, " oe:%d", info->icount.overrun);
1226 info->tx_active,info->bh_requested,info->bh_running,
1227 info->pending_bh);
1234 struct slgt_info *info;
1238 info = slgt_device_list;
1239 while( info ) {
1240 line_info(m, info);
1241 info = info->next_device;
1251 struct slgt_info *info = tty->driver_data;
1253 if (sanity_check(info, tty->name, "chars_in_buffer"))
1255 count = tbuf_bytes(info);
1256 DBGINFO(("%s chars_in_buffer()=%u\n", info->device_name, count));
1265 struct slgt_info *info = tty->driver_data;
1268 if (sanity_check(info, tty->name, "throttle"))
1270 DBGINFO(("%s throttle\n", info->device_name));
1274 spin_lock_irqsave(&info->lock,flags);
1275 info->signals &= ~SerialSignal_RTS;
1276 set_gtsignals(info);
1277 spin_unlock_irqrestore(&info->lock,flags);
1286 struct slgt_info *info = tty->driver_data;
1289 if (sanity_check(info, tty->name, "unthrottle"))
1291 DBGINFO(("%s unthrottle\n", info->device_name));
1293 if (info->x_char)
1294 info->x_char = 0;
1299 spin_lock_irqsave(&info->lock,flags);
1300 info->signals |= SerialSignal_RTS;
1301 set_gtsignals(info);
1302 spin_unlock_irqrestore(&info->lock,flags);
1312 struct slgt_info *info = tty->driver_data;
1316 if (sanity_check(info, tty->name, "set_break"))
1318 DBGINFO(("%s set_break(%d)\n", info->device_name, break_state));
1320 spin_lock_irqsave(&info->lock,flags);
1321 value = rd_reg16(info, TCR);
1326 wr_reg16(info, TCR, value);
1327 spin_unlock_irqrestore(&info->lock,flags);
1346 struct slgt_info *info = dev_to_port(dev);
1351 if (info->port.count)
1354 DBGINFO(("%s hdlcdev_attach\n", info->device_name));
1374 info->params.encoding = new_encoding;
1375 info->params.crc_type = new_crctype;
1378 if (info->netcount)
1379 program_hw(info);
1392 struct slgt_info *info = dev_to_port(dev);
1410 spin_lock_irqsave(&info->lock, flags);
1411 tx_load(info, skb->data, skb->len);
1412 spin_unlock_irqrestore(&info->lock, flags);
1430 struct slgt_info *info = dev_to_port(dev);
1437 spin_lock_irqsave(&info->netlock, flags);
1438 if (info->port.count != 0 || info->netcount != 0) {
1440 spin_unlock_irqrestore(&info->netlock, flags);
1443 info->netcount=1;
1444 spin_unlock_irqrestore(&info->netlock, flags);
1447 if ((rc = startup(info)) != 0) {
1448 spin_lock_irqsave(&info->netlock, flags);
1449 info->netcount=0;
1450 spin_unlock_irqrestore(&info->netlock, flags);
1457 shutdown(info);
1458 spin_lock_irqsave(&info->netlock, flags);
1459 info->netcount = 0;
1460 spin_unlock_irqrestore(&info->netlock, flags);
1465 info->signals |= SerialSignal_RTS | SerialSignal_DTR;
1466 program_hw(info);
1473 spin_lock_irqsave(&info->lock, flags);
1474 get_gtsignals(info);
1475 spin_unlock_irqrestore(&info->lock, flags);
1476 if (info->signals & SerialSignal_DCD)
1493 struct slgt_info *info = dev_to_port(dev);
1501 shutdown(info);
1505 spin_lock_irqsave(&info->netlock, flags);
1506 info->netcount=0;
1507 spin_unlock_irqrestore(&info->netlock, flags);
1525 struct slgt_info *info = dev_to_port(dev);
1531 if (info->port.count)
1545 flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL |
1558 new_line.clock_rate = info->params.clock_speed;
1559 new_line.loopback = info->params.loopback ? 1:0;
1578 case CLOCK_DEFAULT: flags = info->params.flags &
1589 info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL |
1593 info->params.flags |= flags;
1595 info->params.loopback = new_line.loopback;
1598 info->params.clock_speed = new_line.clock_rate;
1600 info->params.clock_speed = 0;
1603 if (info->netcount)
1604 program_hw(info);
1619 struct slgt_info *info = dev_to_port(dev);
1627 spin_lock_irqsave(&info->lock,flags);
1628 tx_stop(info);
1629 spin_unlock_irqrestore(&info->lock,flags);
1636 * @info: pointer to device instance information
1640 static void hdlcdev_tx_done(struct slgt_info *info)
1642 if (netif_queue_stopped(info->netdev))
1643 netif_wake_queue(info->netdev);
1648 * @info: pointer to device instance information
1654 static void hdlcdev_rx(struct slgt_info *info, char *buf, int size)
1657 struct net_device *dev = info->netdev;
1687 * @info: pointer to device instance information
1693 static int hdlcdev_init(struct slgt_info *info)
1701 dev = alloc_hdlcdev(info);
1703 printk(KERN_ERR "%s hdlc device alloc failure\n", info->device_name);
1708 dev->mem_start = info->phys_reg_addr;
1709 dev->mem_end = info->phys_reg_addr + SLGT_REG_SIZE - 1;
1710 dev->irq = info->irq_level;
1730 info->netdev = dev;
1736 * @info: pointer to device instance information
1740 static void hdlcdev_exit(struct slgt_info *info)
1742 if (!info->netdev)
1744 unregister_hdlc_device(info->netdev);
1745 free_netdev(info->netdev);
1746 info->netdev = NULL;
1754 static void rx_async(struct slgt_info *info)
1756 struct mgsl_icount *icount = &info->icount;
1760 struct slgt_desc *bufs = info->rbufs;
1766 start = end = info->rbuf_current;
1769 count = desc_count(bufs[end]) - info->rbuf_index;
1770 p = bufs[end].buf + info->rbuf_index;
1772 DBGISR(("%s rx_async count=%d\n", info->device_name, count));
1773 DBGDATA(info, p, count, "rx");
1788 if (status & info->ignore_status_mask)
1795 tty_insert_flip_char(&info->port, ch, stat);
1801 info->rbuf_index += i;
1802 mod_timer(&info->rx_timer, jiffies + 1);
1806 info->rbuf_index = 0;
1807 free_rbufs(info, end, end);
1809 if (++end == info->rbuf_count)
1818 tty_flip_buffer_push(&info->port);
1824 static int bh_action(struct slgt_info *info)
1829 spin_lock_irqsave(&info->lock,flags);
1831 if (info->pending_bh & BH_RECEIVE) {
1832 info->pending_bh &= ~BH_RECEIVE;
1834 } else if (info->pending_bh & BH_TRANSMIT) {
1835 info->pending_bh &= ~BH_TRANSMIT;
1837 } else if (info->pending_bh & BH_STATUS) {
1838 info->pending_bh &= ~BH_STATUS;
1842 info->bh_running = false;
1843 info->bh_requested = false;
1847 spin_unlock_irqrestore(&info->lock,flags);
1857 struct slgt_info *info = container_of(work, struct slgt_info, task);
1860 info->bh_running = true;
1862 while((action = bh_action(info))) {
1865 DBGBH(("%s bh receive\n", info->device_name));
1866 switch(info->params.mode) {
1868 rx_async(info);
1871 while(rx_get_frame(info));
1877 while(rx_get_buf(info));
1881 if (info->rx_restart)
1882 rx_start(info);
1885 bh_transmit(info);
1888 DBGBH(("%s bh status\n", info->device_name));
1889 info->ri_chkcount = 0;
1890 info->dsr_chkcount = 0;
1891 info->dcd_chkcount = 0;
1892 info->cts_chkcount = 0;
1895 DBGBH(("%s unknown action\n", info->device_name));
1899 DBGBH(("%s bh_handler exit\n", info->device_name));
1902 static void bh_transmit(struct slgt_info *info)
1904 struct tty_struct *tty = info->port.tty;
1906 DBGBH(("%s bh_transmit\n", info->device_name));
1911 static void dsr_change(struct slgt_info *info, unsigned short status)
1914 info->signals |= SerialSignal_DSR;
1915 info->input_signal_events.dsr_up++;
1917 info->signals &= ~SerialSignal_DSR;
1918 info->input_signal_events.dsr_down++;
1920 DBGISR(("dsr_change %s signals=%04X\n", info->device_name, info->signals));
1921 if ((info->dsr_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) {
1922 slgt_irq_off(info, IRQ_DSR);
1925 info->icount.dsr++;
1926 wake_up_interruptible(&info->status_event_wait_q);
1927 wake_up_interruptible(&info->event_wait_q);
1928 info->pending_bh |= BH_STATUS;
1931 static void cts_change(struct slgt_info *info, unsigned short status)
1934 info->signals |= SerialSignal_CTS;
1935 info->input_signal_events.cts_up++;
1937 info->signals &= ~SerialSignal_CTS;
1938 info->input_signal_events.cts_down++;
1940 DBGISR(("cts_change %s signals=%04X\n", info->device_name, info->signals));
1941 if ((info->cts_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) {
1942 slgt_irq_off(info, IRQ_CTS);
1945 info->icount.cts++;
1946 wake_up_interruptible(&info->status_event_wait_q);
1947 wake_up_interruptible(&info->event_wait_q);
1948 info->pending_bh |= BH_STATUS;
1950 if (tty_port_cts_enabled(&info->port)) {
1951 if (info->port.tty) {
1952 if (info->port.tty->hw_stopped) {
1953 if (info->signals & SerialSignal_CTS) {
1954 info->port.tty->hw_stopped = false;
1955 info->pending_bh |= BH_TRANSMIT;
1959 if (!(info->signals & SerialSignal_CTS))
1960 info->port.tty->hw_stopped = true;
1966 static void dcd_change(struct slgt_info *info, unsigned short status)
1969 info->signals |= SerialSignal_DCD;
1970 info->input_signal_events.dcd_up++;
1972 info->signals &= ~SerialSignal_DCD;
1973 info->input_signal_events.dcd_down++;
1975 DBGISR(("dcd_change %s signals=%04X\n", info->device_name, info->signals));
1976 if ((info->dcd_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) {
1977 slgt_irq_off(info, IRQ_DCD);
1980 info->icount.dcd++;
1982 if (info->netcount) {
1983 if (info->signals & SerialSignal_DCD)
1984 netif_carrier_on(info->netdev);
1986 netif_carrier_off(info->netdev);
1989 wake_up_interruptible(&info->status_event_wait_q);
1990 wake_up_interruptible(&info->event_wait_q);
1991 info->pending_bh |= BH_STATUS;
1993 if (tty_port_check_carrier(&info->port)) {
1994 if (info->signals & SerialSignal_DCD)
1995 wake_up_interruptible(&info->port.open_wait);
1997 if (info->port.tty)
1998 tty_hangup(info->port.tty);
2003 static void ri_change(struct slgt_info *info, unsigned short status)
2006 info->signals |= SerialSignal_RI;
2007 info->input_signal_events.ri_up++;
2009 info->signals &= ~SerialSignal_RI;
2010 info->input_signal_events.ri_down++;
2012 DBGISR(("ri_change %s signals=%04X\n", info->device_name, info->signals));
2013 if ((info->ri_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) {
2014 slgt_irq_off(info, IRQ_RI);
2017 info->icount.rng++;
2018 wake_up_interruptible(&info->status_event_wait_q);
2019 wake_up_interruptible(&info->event_wait_q);
2020 info->pending_bh |= BH_STATUS;
2023 static void isr_rxdata(struct slgt_info *info)
2025 unsigned int count = info->rbuf_fill_count;
2026 unsigned int i = info->rbuf_fill_index;
2029 while (rd_reg16(info, SSR) & IRQ_RXDATA) {
2030 reg = rd_reg16(info, RDR);
2031 DBGISR(("isr_rxdata %s RDR=%04X\n", info->device_name, reg));
2032 if (desc_complete(info->rbufs[i])) {
2034 rx_stop(info);
2035 info->rx_restart = true;
2038 info->rbufs[i].buf[count++] = (unsigned char)reg;
2040 if (info->params.mode == MGSL_MODE_ASYNC)
2041 info->rbufs[i].buf[count++] = (unsigned char)(reg >> 8);
2042 if (count == info->rbuf_fill_level || (reg & BIT10)) {
2044 set_desc_count(info->rbufs[i], count);
2045 set_desc_status(info->rbufs[i], BIT15 | (reg >> 8));
2046 info->rbuf_fill_count = count = 0;
2047 if (++i == info->rbuf_count)
2049 info->pending_bh |= BH_RECEIVE;
2053 info->rbuf_fill_index = i;
2054 info->rbuf_fill_count = count;
2057 static void isr_serial(struct slgt_info *info)
2059 unsigned short status = rd_reg16(info, SSR);
2061 DBGISR(("%s isr_serial status=%04X\n", info->device_name, status));
2063 wr_reg16(info, SSR, status); /* clear pending */
2065 info->irq_occurred = true;
2067 if (info->params.mode == MGSL_MODE_ASYNC) {
2069 if (info->tx_active)
2070 isr_txeom(info, status);
2072 if (info->rx_pio && (status & IRQ_RXDATA))
2073 isr_rxdata(info);
2075 info->icount.brk++;
2077 if (info->port.tty) {
2078 if (!(status & info->ignore_status_mask)) {
2079 if (info->read_status_mask & MASK_BREAK) {
2080 tty_insert_flip_char(&info->port, 0, TTY_BREAK);
2081 if (info->port.flags & ASYNC_SAK)
2082 do_SAK(info->port.tty);
2089 isr_txeom(info, status);
2090 if (info->rx_pio && (status & IRQ_RXDATA))
2091 isr_rxdata(info);
2094 info->icount.rxidle++;
2096 info->icount.exithunt++;
2097 wake_up_interruptible(&info->event_wait_q);
2101 rx_start(info);
2105 dsr_change(info, status);
2107 cts_change(info, status);
2109 dcd_change(info, status);
2111 ri_change(info, status);
2114 static void isr_rdma(struct slgt_info *info)
2116 unsigned int status = rd_reg32(info, RDCSR);
2118 DBGISR(("%s isr_rdma status=%08x\n", info->device_name, status));
2131 wr_reg32(info, RDCSR, status); /* clear pending */
2134 DBGISR(("%s isr_rdma rx_restart=1\n", info->device_name));
2135 info->rx_restart = true;
2137 info->pending_bh |= BH_RECEIVE;
2140 static void isr_tdma(struct slgt_info *info)
2142 unsigned int status = rd_reg32(info, TDCSR);
2144 DBGISR(("%s isr_tdma status=%08x\n", info->device_name, status));
2156 wr_reg32(info, TDCSR, status); /* clear pending */
2161 info->pending_bh |= BH_TRANSMIT;
2168 * if there are unsent buffers then info->tbuf_start
2171 static bool unsent_tbufs(struct slgt_info *info)
2173 unsigned int i = info->tbuf_current;
2185 i = info->tbuf_count - 1;
2186 if (!desc_count(info->tbufs[i]))
2188 info->tbuf_start = i;
2190 } while (i != info->tbuf_current);
2195 static void isr_txeom(struct slgt_info *info, unsigned short status)
2197 DBGISR(("%s txeom status=%04x\n", info->device_name, status));
2199 slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER);
2200 tdma_reset(info);
2202 unsigned short val = rd_reg16(info, TCR);
2203 wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */
2204 wr_reg16(info, TCR, val); /* clear reset bit */
2207 if (info->tx_active) {
2208 if (info->params.mode != MGSL_MODE_ASYNC) {
2210 info->icount.txunder++;
2212 info->icount.txok++;
2215 if (unsent_tbufs(info)) {
2216 tx_start(info);
2217 update_tx_timer(info);
2220 info->tx_active = false;
2222 del_timer(&info->tx_timer);
2224 if (info->params.mode != MGSL_MODE_ASYNC && info->drop_rts_on_tx_done) {
2225 info->signals &= ~SerialSignal_RTS;
2226 info->drop_rts_on_tx_done = false;
2227 set_gtsignals(info);
2231 if (info->netcount)
2232 hdlcdev_tx_done(info);
2236 if (info->port.tty && (info->port.tty->flow.stopped || info->port.tty->hw_stopped)) {
2237 tx_stop(info);
2240 info->pending_bh |= BH_TRANSMIT;
2245 static void isr_gpio(struct slgt_info *info, unsigned int changed, unsigned int state)
2250 for (w = info->gpio_wait_q, prev = NULL ; w != NULL ; w = w->next) {
2257 info->gpio_wait_q = w->next;
2270 struct slgt_info *info = dev_id;
2274 DBGISR(("slgt_interrupt irq=%d entry\n", info->irq_level));
2276 while((gsr = rd_reg32(info, GSR) & 0xffffff00)) {
2277 DBGISR(("%s gsr=%08x\n", info->device_name, gsr));
2278 info->irq_occurred = true;
2279 for(i=0; i < info->port_count ; i++) {
2280 if (info->port_array[i] == NULL)
2282 spin_lock(&info->port_array[i]->lock);
2284 isr_serial(info->port_array[i]);
2286 isr_rdma(info->port_array[i]);
2288 isr_tdma(info->port_array[i]);
2289 spin_unlock(&info->port_array[i]->lock);
2293 if (info->gpio_present) {
2296 spin_lock(&info->lock);
2297 while ((changed = rd_reg32(info, IOSR)) != 0) {
2298 DBGISR(("%s iosr=%08x\n", info->device_name, changed));
2300 state = rd_reg32(info, IOVR);
2302 wr_reg32(info, IOSR, changed);
2303 for (i=0 ; i < info->port_count ; i++) {
2304 if (info->port_array[i] != NULL)
2305 isr_gpio(info->port_array[i], changed, state);
2308 spin_unlock(&info->lock);
2311 for(i=0; i < info->port_count ; i++) {
2312 struct slgt_info *port = info->port_array[i];
2326 DBGISR(("slgt_interrupt irq=%d exit\n", info->irq_level));
2330 static int startup(struct slgt_info *info)
2332 DBGINFO(("%s startup\n", info->device_name));
2334 if (tty_port_initialized(&info->port))
2337 if (!info->tx_buf) {
2338 info->tx_buf = kmalloc(info->max_frame_size, GFP_KERNEL);
2339 if (!info->tx_buf) {
2340 DBGERR(("%s can't allocate tx buffer\n", info->device_name));
2345 info->pending_bh = 0;
2347 memset(&info->icount, 0, sizeof(info->icount));
2350 change_params(info);
2352 if (info->port.tty)
2353 clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
2355 tty_port_set_initialized(&info->port, true);
2363 static void shutdown(struct slgt_info *info)
2367 if (!tty_port_initialized(&info->port))
2370 DBGINFO(("%s shutdown\n", info->device_name));
2374 wake_up_interruptible(&info->status_event_wait_q);
2375 wake_up_interruptible(&info->event_wait_q);
2377 del_timer_sync(&info->tx_timer);
2378 del_timer_sync(&info->rx_timer);
2380 kfree(info->tx_buf);
2381 info->tx_buf = NULL;
2383 spin_lock_irqsave(&info->lock,flags);
2385 tx_stop(info);
2386 rx_stop(info);
2388 slgt_irq_off(info, IRQ_ALL | IRQ_MASTER);
2390 if (!info->port.tty || info->port.tty->termios.c_cflag & HUPCL) {
2391 info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
2392 set_gtsignals(info);
2395 flush_cond_wait(&info->gpio_wait_q);
2397 spin_unlock_irqrestore(&info->lock,flags);
2399 if (info->port.tty)
2400 set_bit(TTY_IO_ERROR, &info->port.tty->flags);
2402 tty_port_set_initialized(&info->port, false);
2405 static void program_hw(struct slgt_info *info)
2409 spin_lock_irqsave(&info->lock,flags);
2411 rx_stop(info);
2412 tx_stop(info);
2414 if (info->params.mode != MGSL_MODE_ASYNC ||
2415 info->netcount)
2416 sync_mode(info);
2418 async_mode(info);
2420 set_gtsignals(info);
2422 info->dcd_chkcount = 0;
2423 info->cts_chkcount = 0;
2424 info->ri_chkcount = 0;
2425 info->dsr_chkcount = 0;
2427 slgt_irq_on(info, IRQ_DCD | IRQ_CTS | IRQ_DSR | IRQ_RI);
2428 get_gtsignals(info);
2430 if (info->netcount ||
2431 (info->port.tty && info->port.tty->termios.c_cflag & CREAD))
2432 rx_start(info);
2434 spin_unlock_irqrestore(&info->lock,flags);
2440 static void change_params(struct slgt_info *info)
2445 if (!info->port.tty)
2447 DBGINFO(("%s change_params\n", info->device_name));
2449 cflag = info->port.tty->termios.c_cflag;
2454 info->signals |= SerialSignal_RTS | SerialSignal_DTR;
2456 info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
2460 info->params.data_bits = tty_get_char_size(cflag);
2461 info->params.stop_bits = (cflag & CSTOPB) ? 2 : 1;
2464 info->params.parity = (cflag & PARODD) ? ASYNC_PARITY_ODD : ASYNC_PARITY_EVEN;
2466 info->params.parity = ASYNC_PARITY_NONE;
2471 bits_per_char = info->params.data_bits +
2472 info->params.stop_bits + 1;
2474 info->params.data_rate = tty_get_baud_rate(info->port.tty);
2476 if (info->params.data_rate) {
2477 info->timeout = (32*HZ*bits_per_char) /
2478 info->params.data_rate;
2480 info->timeout += HZ/50; /* Add .02 seconds of slop */
2482 tty_port_set_cts_flow(&info->port, cflag & CRTSCTS);
2483 tty_port_set_check_carrier(&info->port, ~cflag & CLOCAL);
2487 info->read_status_mask = IRQ_RXOVER;
2488 if (I_INPCK(info->port.tty))
2489 info->read_status_mask |= MASK_PARITY | MASK_FRAMING;
2490 if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))
2491 info->read_status_mask |= MASK_BREAK;
2492 if (I_IGNPAR(info->port.tty))
2493 info->ignore_status_mask |= MASK_PARITY | MASK_FRAMING;
2494 if (I_IGNBRK(info->port.tty)) {
2495 info->ignore_status_mask |= MASK_BREAK;
2499 if (I_IGNPAR(info->port.tty))
2500 info->ignore_status_mask |= MASK_OVERRUN;
2503 program_hw(info);
2506 static int get_stats(struct slgt_info *info, struct mgsl_icount __user *user_icount)
2508 DBGINFO(("%s get_stats\n", info->device_name));
2510 memset(&info->icount, 0, sizeof(info->icount));
2512 if (copy_to_user(user_icount, &info->icount, sizeof(struct mgsl_icount)))
2518 static int get_params(struct slgt_info *info, MGSL_PARAMS __user *user_params)
2520 DBGINFO(("%s get_params\n", info->device_name));
2521 if (copy_to_user(user_params, &info->params, sizeof(MGSL_PARAMS)))
2526 static int set_params(struct slgt_info *info, MGSL_PARAMS __user *new_params)
2531 DBGINFO(("%s set_params\n", info->device_name));
2535 spin_lock_irqsave(&info->lock, flags);
2537 info->base_clock = tmp_params.clock_speed;
2539 memcpy(&info->params, &tmp_params, sizeof(MGSL_PARAMS));
2540 spin_unlock_irqrestore(&info->lock, flags);
2542 program_hw(info);
2547 static int get_txidle(struct slgt_info *info, int __user *idle_mode)
2549 DBGINFO(("%s get_txidle=%d\n", info->device_name, info->idle_mode));
2550 if (put_user(info->idle_mode, idle_mode))
2555 static int set_txidle(struct slgt_info *info, int idle_mode)
2558 DBGINFO(("%s set_txidle(%d)\n", info->device_name, idle_mode));
2559 spin_lock_irqsave(&info->lock,flags);
2560 info->idle_mode = idle_mode;
2561 if (info->params.mode != MGSL_MODE_ASYNC)
2562 tx_set_idle(info);
2563 spin_unlock_irqrestore(&info->lock,flags);
2567 static int tx_enable(struct slgt_info *info, int enable)
2570 DBGINFO(("%s tx_enable(%d)\n", info->device_name, enable));
2571 spin_lock_irqsave(&info->lock,flags);
2573 if (!info->tx_enabled)
2574 tx_start(info);
2576 if (info->tx_enabled)
2577 tx_stop(info);
2579 spin_unlock_irqrestore(&info->lock,flags);
2586 static int tx_abort(struct slgt_info *info)
2589 DBGINFO(("%s tx_abort\n", info->device_name));
2590 spin_lock_irqsave(&info->lock,flags);
2591 tdma_reset(info);
2592 spin_unlock_irqrestore(&info->lock,flags);
2596 static int rx_enable(struct slgt_info *info, int enable)
2600 DBGINFO(("%s rx_enable(%08x)\n", info->device_name, enable));
2601 spin_lock_irqsave(&info->lock,flags);
2610 spin_unlock_irqrestore(&info->lock, flags);
2613 info->rbuf_fill_level = rbuf_fill_level;
2615 info->rx_pio = 1; /* PIO mode */
2617 info->rx_pio = 0; /* DMA mode */
2618 rx_stop(info); /* restart receiver to use new fill level */
2629 if (!info->rx_enabled)
2630 rx_start(info);
2633 wr_reg16(info, RCR, rd_reg16(info, RCR) | BIT3);
2636 if (info->rx_enabled)
2637 rx_stop(info);
2639 spin_unlock_irqrestore(&info->lock,flags);
2646 static int wait_mgsl_event(struct slgt_info *info, int __user *mask_ptr)
2660 DBGINFO(("%s wait_mgsl_event(%d)\n", info->device_name, mask));
2662 spin_lock_irqsave(&info->lock,flags);
2665 get_gtsignals(info);
2666 s = info->signals;
2674 spin_unlock_irqrestore(&info->lock,flags);
2679 cprev = info->icount;
2680 oldsigs = info->input_signal_events;
2684 unsigned short val = rd_reg16(info, SCR);
2686 wr_reg16(info, SCR, (unsigned short)(val | IRQ_RXIDLE));
2690 add_wait_queue(&info->event_wait_q, &wait);
2692 spin_unlock_irqrestore(&info->lock,flags);
2702 spin_lock_irqsave(&info->lock,flags);
2703 cnow = info->icount;
2704 newsigs = info->input_signal_events;
2706 spin_unlock_irqrestore(&info->lock,flags);
2741 remove_wait_queue(&info->event_wait_q, &wait);
2746 spin_lock_irqsave(&info->lock,flags);
2747 if (!waitqueue_active(&info->event_wait_q)) {
2749 wr_reg16(info, SCR,
2750 (unsigned short)(rd_reg16(info, SCR) & ~IRQ_RXIDLE));
2752 spin_unlock_irqrestore(&info->lock,flags);
2760 static int get_interface(struct slgt_info *info, int __user *if_mode)
2762 DBGINFO(("%s get_interface=%x\n", info->device_name, info->if_mode));
2763 if (put_user(info->if_mode, if_mode))
2768 static int set_interface(struct slgt_info *info, int if_mode)
2773 DBGINFO(("%s set_interface=%x)\n", info->device_name, if_mode));
2774 spin_lock_irqsave(&info->lock,flags);
2775 info->if_mode = if_mode;
2777 msc_set_vcr(info);
2780 val = rd_reg16(info, TCR);
2781 if (info->if_mode & MGSL_INTERFACE_RTS_EN)
2785 wr_reg16(info, TCR, val);
2787 spin_unlock_irqrestore(&info->lock,flags);
2791 static int get_xsync(struct slgt_info *info, int __user *xsync)
2793 DBGINFO(("%s get_xsync=%x\n", info->device_name, info->xsync));
2794 if (put_user(info->xsync, xsync))
2805 static int set_xsync(struct slgt_info *info, int xsync)
2809 DBGINFO(("%s set_xsync=%x)\n", info->device_name, xsync));
2810 spin_lock_irqsave(&info->lock, flags);
2811 info->xsync = xsync;
2812 wr_reg32(info, XSR, xsync);
2813 spin_unlock_irqrestore(&info->lock, flags);
2817 static int get_xctrl(struct slgt_info *info, int __user *xctrl)
2819 DBGINFO(("%s get_xctrl=%x\n", info->device_name, info->xctrl));
2820 if (put_user(info->xctrl, xctrl))
2842 static int set_xctrl(struct slgt_info *info, int xctrl)
2846 DBGINFO(("%s set_xctrl=%x)\n", info->device_name, xctrl));
2847 spin_lock_irqsave(&info->lock, flags);
2848 info->xctrl = xctrl;
2849 wr_reg32(info, XCR, xctrl);
2850 spin_unlock_irqrestore(&info->lock, flags);
2863 static int set_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio)
2869 if (!info->gpio_present)
2874 info->device_name, gpio.state, gpio.smask,
2877 spin_lock_irqsave(&info->port_array[0]->lock, flags);
2879 data = rd_reg32(info, IODR);
2882 wr_reg32(info, IODR, data);
2885 data = rd_reg32(info, IOVR);
2888 wr_reg32(info, IOVR, data);
2890 spin_unlock_irqrestore(&info->port_array[0]->lock, flags);
2898 static int get_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio)
2901 if (!info->gpio_present)
2903 gpio.state = rd_reg32(info, IOVR);
2905 gpio.dir = rd_reg32(info, IODR);
2910 info->device_name, gpio.state, gpio.dir));
2972 static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio)
2980 if (!info->gpio_present)
2985 info->device_name, gpio.state, gpio.smask));
2987 if ((gpio.smask &= ~rd_reg32(info, IODR)) == 0)
2991 spin_lock_irqsave(&info->port_array[0]->lock, flags);
2993 wr_reg32(info, IOER, rd_reg32(info, IOER) | gpio.smask);
2995 state = rd_reg32(info, IOVR);
3002 add_cond_wait(&info->gpio_wait_q, &wait);
3003 spin_unlock_irqrestore(&info->port_array[0]->lock, flags);
3009 spin_lock_irqsave(&info->port_array[0]->lock, flags);
3010 remove_cond_wait(&info->gpio_wait_q, &wait);
3014 if (info->gpio_wait_q == NULL)
3015 wr_reg32(info, IOER, 0);
3016 spin_unlock_irqrestore(&info->port_array[0]->lock, flags);
3023 static int modem_input_wait(struct slgt_info *info,int arg)
3031 spin_lock_irqsave(&info->lock,flags);
3032 cprev = info->icount;
3033 add_wait_queue(&info->status_event_wait_q, &wait);
3035 spin_unlock_irqrestore(&info->lock,flags);
3045 spin_lock_irqsave(&info->lock,flags);
3046 cnow = info->icount;
3048 spin_unlock_irqrestore(&info->lock,flags);
3068 remove_wait_queue(&info->status_event_wait_q, &wait);
3078 struct slgt_info *info = tty->driver_data;
3082 spin_lock_irqsave(&info->lock,flags);
3083 get_gtsignals(info);
3084 spin_unlock_irqrestore(&info->lock,flags);
3086 result = ((info->signals & SerialSignal_RTS) ? TIOCM_RTS:0) +
3087 ((info->signals & SerialSignal_DTR) ? TIOCM_DTR:0) +
3088 ((info->signals & SerialSignal_DCD) ? TIOCM_CAR:0) +
3089 ((info->signals & SerialSignal_RI) ? TIOCM_RNG:0) +
3090 ((info->signals & SerialSignal_DSR) ? TIOCM_DSR:0) +
3091 ((info->signals & SerialSignal_CTS) ? TIOCM_CTS:0);
3093 DBGINFO(("%s tiocmget value=%08X\n", info->device_name, result));
3107 struct slgt_info *info = tty->driver_data;
3110 DBGINFO(("%s tiocmset(%x,%x)\n", info->device_name, set, clear));
3113 info->signals |= SerialSignal_RTS;
3115 info->signals |= SerialSignal_DTR;
3117 info->signals &= ~SerialSignal_RTS;
3119 info->signals &= ~SerialSignal_DTR;
3121 spin_lock_irqsave(&info->lock,flags);
3122 set_gtsignals(info);
3123 spin_unlock_irqrestore(&info->lock,flags);
3130 struct slgt_info *info = container_of(port, struct slgt_info, port);
3132 spin_lock_irqsave(&info->lock,flags);
3133 get_gtsignals(info);
3134 spin_unlock_irqrestore(&info->lock,flags);
3136 return info->signals & SerialSignal_DCD;
3142 struct slgt_info *info = container_of(port, struct slgt_info, port);
3144 spin_lock_irqsave(&info->lock,flags);
3146 info->signals |= SerialSignal_RTS | SerialSignal_DTR;
3148 info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
3149 set_gtsignals(info);
3150 spin_unlock_irqrestore(&info->lock,flags);
3158 struct slgt_info *info)
3165 struct tty_port *port = &info->port;
3188 spin_lock_irqsave(&info->lock, flags);
3190 spin_unlock_irqrestore(&info->lock, flags);
3240 static int alloc_tmp_rbuf(struct slgt_info *info)
3242 info->tmp_rbuf = kmalloc(info->max_frame_size + 5, GFP_KERNEL);
3243 if (info->tmp_rbuf == NULL)
3249 static void free_tmp_rbuf(struct slgt_info *info)
3251 kfree(info->tmp_rbuf);
3252 info->tmp_rbuf = NULL;
3258 static int alloc_desc(struct slgt_info *info)
3264 info->bufs = dma_alloc_coherent(&info->pdev->dev, DESC_LIST_SIZE,
3265 &info->bufs_dma_addr, GFP_KERNEL);
3266 if (info->bufs == NULL)
3269 info->rbufs = (struct slgt_desc*)info->bufs;
3270 info->tbufs = ((struct slgt_desc*)info->bufs) + info->rbuf_count;
3272 pbufs = (unsigned int)info->bufs_dma_addr;
3278 for (i=0; i < info->rbuf_count; i++) {
3280 info->rbufs[i].pdesc = pbufs + (i * sizeof(struct slgt_desc));
3283 if (i == info->rbuf_count - 1)
3284 info->rbufs[i].next = cpu_to_le32(pbufs);
3286 info->rbufs[i].next = cpu_to_le32(pbufs + ((i+1) * sizeof(struct slgt_desc)));
3287 set_desc_count(info->rbufs[i], DMABUFSIZE);
3290 for (i=0; i < info->tbuf_count; i++) {
3292 info->tbufs[i].pdesc = pbufs + ((info->rbuf_count + i) * sizeof(struct slgt_desc));
3295 if (i == info->tbuf_count - 1)
3296 info->tbufs[i].next = cpu_to_le32(pbufs + info->rbuf_count * sizeof(struct slgt_desc));
3298 info->tbufs[i].next = cpu_to_le32(pbufs + ((info->rbuf_count + i + 1) * sizeof(struct slgt_desc)));
3304 static void free_desc(struct slgt_info *info)
3306 if (info->bufs != NULL) {
3307 dma_free_coherent(&info->pdev->dev, DESC_LIST_SIZE,
3308 info->bufs, info->bufs_dma_addr);
3309 info->bufs = NULL;
3310 info->rbufs = NULL;
3311 info->tbufs = NULL;
3315 static int alloc_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count)
3319 bufs[i].buf = dma_alloc_coherent(&info->pdev->dev, DMABUFSIZE,
3328 static void free_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count)
3334 dma_free_coherent(&info->pdev->dev, DMABUFSIZE, bufs[i].buf,
3340 static int alloc_dma_bufs(struct slgt_info *info)
3342 info->rbuf_count = 32;
3343 info->tbuf_count = 32;
3345 if (alloc_desc(info) < 0 ||
3346 alloc_bufs(info, info->rbufs, info->rbuf_count) < 0 ||
3347 alloc_bufs(info, info->tbufs, info->tbuf_count) < 0 ||
3348 alloc_tmp_rbuf(info) < 0) {
3349 DBGERR(("%s DMA buffer alloc fail\n", info->device_name));
3352 reset_rbufs(info);
3356 static void free_dma_bufs(struct slgt_info *info)
3358 if (info->bufs) {
3359 free_bufs(info, info->rbufs, info->rbuf_count);
3360 free_bufs(info, info->tbufs, info->tbuf_count);
3361 free_desc(info);
3363 free_tmp_rbuf(info);
3366 static int claim_resources(struct slgt_info *info)
3368 if (request_mem_region(info->phys_reg_addr, SLGT_REG_SIZE, "synclink_gt") == NULL) {
3370 info->device_name, info->phys_reg_addr));
3371 info->init_error = DiagStatus_AddressConflict;
3375 info->reg_addr_requested = true;
3377 info->reg_addr = ioremap(info->phys_reg_addr, SLGT_REG_SIZE);
3378 if (!info->reg_addr) {
3380 info->device_name, info->phys_reg_addr));
3381 info->init_error = DiagStatus_CantAssignPciResources;
3387 release_resources(info);
3391 static void release_resources(struct slgt_info *info)
3393 if (info->irq_requested) {
3394 free_irq(info->irq_level, info);
3395 info->irq_requested = false;
3398 if (info->reg_addr_requested) {
3399 release_mem_region(info->phys_reg_addr, SLGT_REG_SIZE);
3400 info->reg_addr_requested = false;
3403 if (info->reg_addr) {
3404 iounmap(info->reg_addr);
3405 info->reg_addr = NULL;
3412 static void add_device(struct slgt_info *info)
3416 info->next_device = NULL;
3417 info->line = slgt_device_count;
3418 sprintf(info->device_name, "%s%d", tty_dev_prefix, info->line);
3420 if (info->line < MAX_DEVICES) {
3421 if (maxframe[info->line])
3422 info->max_frame_size = maxframe[info->line];
3428 slgt_device_list = info;
3433 current_dev->next_device = info;
3436 if (info->max_frame_size < 4096)
3437 info->max_frame_size = 4096;
3438 else if (info->max_frame_size > 65535)
3439 info->max_frame_size = 65535;
3441 switch(info->pdev->device) {
3453 info->params.mode = MGSL_MODE_ASYNC;
3459 devstr, info->device_name, info->phys_reg_addr,
3460 info->irq_level, info->max_frame_size);
3463 hdlcdev_init(info);
3477 struct slgt_info *info;
3479 info = kzalloc(sizeof(struct slgt_info), GFP_KERNEL);
3481 if (!info) {
3485 tty_port_init(&info->port);
3486 info->port.ops = &slgt_port_ops;
3487 INIT_WORK(&info->task, bh_handler);
3488 info->max_frame_size = 4096;
3489 info->base_clock = 14745600;
3490 info->rbuf_fill_level = DMABUFSIZE;
3491 init_waitqueue_head(&info->status_event_wait_q);
3492 init_waitqueue_head(&info->event_wait_q);
3493 spin_lock_init(&info->netlock);
3494 memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS));
3495 info->idle_mode = HDLC_TXIDLE_FLAGS;
3496 info->adapter_num = adapter_num;
3497 info->port_num = port_num;
3499 timer_setup(&info->tx_timer, tx_timeout, 0);
3500 timer_setup(&info->rx_timer, rx_timeout, 0);
3502 /* Copy configuration info to device instance data */
3503 info->pdev = pdev;
3504 info->irq_level = pdev->irq;
3505 info->phys_reg_addr = pci_resource_start(pdev,0);
3507 info->bus_type = MGSL_BUS_TYPE_PCI;
3508 info->irq_flags = IRQF_SHARED;
3510 info->init_error = -1; /* assume error, set to 0 on successful init */
3513 return info;
3578 struct slgt_info *info = port_array[i];
3579 tty_port_register_device(&info->port, serial_driver, info->line,
3580 &info->pdev->dev);
3628 struct slgt_info *info;
3632 for (info=slgt_device_list ; info != NULL ; info=info->next_device)
3633 tty_unregister_device(serial_driver, info->line);
3639 info = slgt_device_list;
3640 while(info) {
3641 reset_port(info);
3642 info = info->next_device;
3646 info = slgt_device_list;
3647 while(info) {
3649 hdlcdev_exit(info);
3651 free_dma_bufs(info);
3652 free_tmp_rbuf(info);
3653 if (info->port_num == 0)
3654 release_resources(info);
3655 tmp = info;
3656 info = info->next_device;
3726 static inline void __iomem *calc_regaddr(struct slgt_info *info,
3729 void __iomem *reg_addr = info->reg_addr + addr;
3732 reg_addr += info->port_num * 32;
3734 reg_addr += info->port_num * 16;
3739 static __u8 rd_reg8(struct slgt_info *info, unsigned int addr)
3741 return readb(calc_regaddr(info, addr));
3744 static void wr_reg8(struct slgt_info *info, unsigned int addr, __u8 value)
3746 writeb(value, calc_regaddr(info, addr));
3749 static __u16 rd_reg16(struct slgt_info *info, unsigned int addr)
3751 return readw(calc_regaddr(info, addr));
3754 static void wr_reg16(struct slgt_info *info, unsigned int addr, __u16 value)
3756 writew(value, calc_regaddr(info, addr));
3759 static __u32 rd_reg32(struct slgt_info *info, unsigned int addr)
3761 return readl(calc_regaddr(info, addr));
3764 static void wr_reg32(struct slgt_info *info, unsigned int addr, __u32 value)
3766 writel(value, calc_regaddr(info, addr));
3769 static void rdma_reset(struct slgt_info *info)
3774 wr_reg32(info, RDCSR, BIT1);
3778 if (!(rd_reg32(info, RDCSR) & BIT0))
3782 static void tdma_reset(struct slgt_info *info)
3787 wr_reg32(info, TDCSR, BIT1);
3791 if (!(rd_reg32(info, TDCSR) & BIT0))
3800 static void enable_loopback(struct slgt_info *info)
3803 wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) | BIT2));
3805 if (info->params.mode != MGSL_MODE_ASYNC) {
3814 wr_reg8(info, CCR, 0x49);
3817 if (info->params.clock_speed)
3818 set_rate(info, info->params.clock_speed);
3820 set_rate(info, 3686400);
3827 static void set_rate(struct slgt_info *info, u32 rate)
3830 unsigned int osc = info->base_clock;
3842 wr_reg16(info, BDR, (unsigned short)div);
3846 static void rx_stop(struct slgt_info *info)
3851 val = rd_reg16(info, RCR) & ~BIT1; /* clear enable bit */
3852 wr_reg16(info, RCR, (unsigned short)(val | BIT2)); /* set reset bit */
3853 wr_reg16(info, RCR, val); /* clear reset bit */
3855 slgt_irq_off(info, IRQ_RXOVER + IRQ_RXDATA + IRQ_RXIDLE);
3858 wr_reg16(info, SSR, IRQ_RXIDLE + IRQ_RXOVER);
3860 rdma_reset(info);
3862 info->rx_enabled = false;
3863 info->rx_restart = false;
3866 static void rx_start(struct slgt_info *info)
3870 slgt_irq_off(info, IRQ_RXOVER + IRQ_RXDATA);
3873 wr_reg16(info, SSR, IRQ_RXOVER);
3876 val = rd_reg16(info, RCR) & ~BIT1; /* clear enable bit */
3877 wr_reg16(info, RCR, (unsigned short)(val | BIT2)); /* set reset bit */
3878 wr_reg16(info, RCR, val); /* clear reset bit */
3880 rdma_reset(info);
3881 reset_rbufs(info);
3883 if (info->rx_pio) {
3885 wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) & ~BIT14));
3886 slgt_irq_on(info, IRQ_RXDATA);
3887 if (info->params.mode == MGSL_MODE_ASYNC) {
3889 wr_reg32(info, RDCSR, BIT6);
3893 wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) | BIT14));
3895 wr_reg32(info, RDDAR, info->rbufs[0].pdesc);
3897 if (info->params.mode != MGSL_MODE_ASYNC) {
3899 wr_reg32(info, RDCSR, (BIT2 + BIT0));
3902 wr_reg32(info, RDCSR, (BIT6 + BIT2 + BIT0));
3906 slgt_irq_on(info, IRQ_RXOVER);
3909 wr_reg16(info, RCR, (unsigned short)(rd_reg16(info, RCR) | BIT1));
3911 info->rx_restart = false;
3912 info->rx_enabled = true;
3915 static void tx_start(struct slgt_info *info)
3917 if (!info->tx_enabled) {
3918 wr_reg16(info, TCR,
3919 (unsigned short)((rd_reg16(info, TCR) | BIT1) & ~BIT2));
3920 info->tx_enabled = true;
3923 if (desc_count(info->tbufs[info->tbuf_start])) {
3924 info->drop_rts_on_tx_done = false;
3926 if (info->params.mode != MGSL_MODE_ASYNC) {
3927 if (info->params.flags & HDLC_FLAG_AUTO_RTS) {
3928 get_gtsignals(info);
3929 if (!(info->signals & SerialSignal_RTS)) {
3930 info->signals |= SerialSignal_RTS;
3931 set_gtsignals(info);
3932 info->drop_rts_on_tx_done = true;
3936 slgt_irq_off(info, IRQ_TXDATA);
3937 slgt_irq_on(info, IRQ_TXUNDER + IRQ_TXIDLE);
3939 wr_reg16(info, SSR, (unsigned short)(IRQ_TXIDLE + IRQ_TXUNDER));
3941 slgt_irq_off(info, IRQ_TXDATA);
3942 slgt_irq_on(info, IRQ_TXIDLE);
3944 wr_reg16(info, SSR, IRQ_TXIDLE);
3947 wr_reg32(info, TDDAR, info->tbufs[info->tbuf_start].pdesc);
3948 wr_reg32(info, TDCSR, BIT2 + BIT0);
3949 info->tx_active = true;
3953 static void tx_stop(struct slgt_info *info)
3957 del_timer(&info->tx_timer);
3959 tdma_reset(info);
3962 val = rd_reg16(info, TCR) & ~BIT1; /* clear enable bit */
3963 wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */
3965 slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER);
3968 wr_reg16(info, SSR, (unsigned short)(IRQ_TXIDLE + IRQ_TXUNDER));
3970 reset_tbufs(info);
3972 info->tx_enabled = false;
3973 info->tx_active = false;
3976 static void reset_port(struct slgt_info *info)
3978 if (!info->reg_addr)
3981 tx_stop(info);
3982 rx_stop(info);
3984 info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
3985 set_gtsignals(info);
3987 slgt_irq_off(info, IRQ_ALL | IRQ_MASTER);
3990 static void reset_adapter(struct slgt_info *info)
3993 for (i=0; i < info->port_count; ++i) {
3994 if (info->port_array[i])
3995 reset_port(info->port_array[i]);
3999 static void async_mode(struct slgt_info *info)
4003 slgt_irq_off(info, IRQ_ALL | IRQ_MASTER);
4004 tx_stop(info);
4005 rx_stop(info);
4027 if (info->if_mode & MGSL_INTERFACE_RTS_EN)
4030 if (info->params.parity != ASYNC_PARITY_NONE) {
4032 if (info->params.parity == ASYNC_PARITY_ODD)
4036 switch (info->params.data_bits)
4043 if (info->params.stop_bits != 1)
4046 if (info->params.flags & HDLC_FLAG_AUTO_CTS)
4049 wr_reg16(info, TCR, val);
4070 if (info->params.parity != ASYNC_PARITY_NONE) {
4072 if (info->params.parity == ASYNC_PARITY_ODD)
4076 switch (info->params.data_bits)
4083 if (info->params.flags & HDLC_FLAG_AUTO_DCD)
4086 wr_reg16(info, RCR, val);
4097 wr_reg8(info, CCR, 0x69);
4099 msc_set_vcr(info);
4122 if ((rd_reg32(info, JCR) & BIT8) && info->params.data_rate &&
4123 ((info->base_clock < (info->params.data_rate * 16)) ||
4124 (info->base_clock % (info->params.data_rate * 16)))) {
4127 set_rate(info, info->params.data_rate * 8);
4130 set_rate(info, info->params.data_rate * 16);
4132 wr_reg16(info, SCR, val);
4134 slgt_irq_on(info, IRQ_RXBREAK | IRQ_RXOVER);
4136 if (info->params.loopback)
4137 enable_loopback(info);
4140 static void sync_mode(struct slgt_info *info)
4144 slgt_irq_off(info, IRQ_ALL | IRQ_MASTER);
4145 tx_stop(info);
4146 rx_stop(info);
4170 switch(info->params.mode) {
4178 if (info->if_mode & MGSL_INTERFACE_RTS_EN)
4181 switch(info->params.encoding)
4192 switch (info->params.crc_type & HDLC_CRC_MASK)
4198 if (info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE)
4201 switch (info->params.preamble_length)
4208 if (info->params.flags & HDLC_FLAG_AUTO_CTS)
4211 wr_reg16(info, TCR, val);
4215 switch (info->params.preamble)
4224 wr_reg8(info, TPR, (unsigned char)val);
4245 switch(info->params.mode) {
4254 switch(info->params.encoding)
4265 switch (info->params.crc_type & HDLC_CRC_MASK)
4271 if (info->params.flags & HDLC_FLAG_AUTO_DCD)
4274 wr_reg16(info, RCR, val);
4285 if (info->params.flags & HDLC_FLAG_TXC_BRG)
4290 if (info->params.flags & HDLC_FLAG_RXC_DPLL)
4295 else if (info->params.flags & HDLC_FLAG_TXC_DPLL)
4297 else if (info->params.flags & HDLC_FLAG_TXC_RXCPIN)
4300 if (info->params.flags & HDLC_FLAG_RXC_BRG)
4302 else if (info->params.flags & HDLC_FLAG_RXC_DPLL)
4304 else if (info->params.flags & HDLC_FLAG_RXC_TXCPIN)
4307 if (info->params.clock_speed)
4310 wr_reg8(info, CCR, (unsigned char)val);
4312 if (info->params.flags & (HDLC_FLAG_TXC_DPLL + HDLC_FLAG_RXC_DPLL))
4315 switch(info->params.encoding)
4325 wr_reg16(info, RCR, (unsigned short)(rd_reg16(info, RCR) | val));
4328 set_rate(info, info->params.clock_speed * 16);
4331 set_rate(info, info->params.clock_speed);
4333 tx_set_idle(info);
4335 msc_set_vcr(info);
4356 wr_reg16(info, SCR, BIT15 + BIT14 + BIT0);
4358 if (info->params.loopback)
4359 enable_loopback(info);
4365 static void tx_set_idle(struct slgt_info *info)
4373 tcr = rd_reg16(info, TCR);
4374 if (info->idle_mode & HDLC_TXIDLE_CUSTOM_16) {
4378 wr_reg8(info, TPR, (unsigned char)((info->idle_mode >> 8) & 0xff));
4383 wr_reg16(info, TCR, tcr);
4385 if (info->idle_mode & (HDLC_TXIDLE_CUSTOM_8 | HDLC_TXIDLE_CUSTOM_16)) {
4387 val = (unsigned char)(info->idle_mode & 0xff);
4390 switch(info->idle_mode)
4401 wr_reg8(info, TIR, val);
4407 static void get_gtsignals(struct slgt_info *info)
4409 unsigned short status = rd_reg16(info, SSR);
4412 info->signals &= SerialSignal_RTS | SerialSignal_DTR;
4415 info->signals |= SerialSignal_DSR;
4417 info->signals |= SerialSignal_CTS;
4419 info->signals |= SerialSignal_DCD;
4421 info->signals |= SerialSignal_RI;
4427 static void msc_set_vcr(struct slgt_info *info)
4440 switch(info->if_mode & MGSL_INTERFACE_MASK)
4453 if (info->if_mode & MGSL_INTERFACE_MSB_FIRST)
4455 if (info->signals & SerialSignal_DTR)
4457 if (info->signals & SerialSignal_RTS)
4459 if (info->if_mode & MGSL_INTERFACE_LL)
4461 if (info->if_mode & MGSL_INTERFACE_RL)
4463 wr_reg8(info, VCR, val);
4469 static void set_gtsignals(struct slgt_info *info)
4471 unsigned char val = rd_reg8(info, VCR);
4472 if (info->signals & SerialSignal_DTR)
4476 if (info->signals & SerialSignal_RTS)
4480 wr_reg8(info, VCR, val);
4486 static void free_rbufs(struct slgt_info *info, unsigned int i, unsigned int last)
4492 info->rbufs[i].status = 0;
4493 set_desc_count(info->rbufs[i], info->rbuf_fill_level);
4496 if (++i == info->rbuf_count)
4499 info->rbuf_current = i;
4505 static void reset_rbufs(struct slgt_info *info)
4507 free_rbufs(info, 0, info->rbuf_count - 1);
4508 info->rbuf_fill_index = 0;
4509 info->rbuf_fill_count = 0;
4517 static bool rx_get_frame(struct slgt_info *info)
4523 struct tty_struct *tty = info->port.tty;
4527 switch (info->params.crc_type & HDLC_CRC_MASK) {
4536 start = end = info->rbuf_current;
4539 if (!desc_complete(info->rbufs[end]))
4542 if (framesize == 0 && info->params.addr_filter != 0xff)
4543 addr_field = info->rbufs[end].buf[0];
4545 framesize += desc_count(info->rbufs[end]);
4547 if (desc_eof(info->rbufs[end]))
4550 if (++end == info->rbuf_count)
4553 if (end == info->rbuf_current) {
4554 if (info->rx_enabled){
4555 spin_lock_irqsave(&info->lock,flags);
4556 rx_start(info);
4557 spin_unlock_irqrestore(&info->lock,flags);
4572 status = desc_status(info->rbufs[end]);
4575 if ((info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_NONE)
4579 (addr_field != 0xff && addr_field != info->params.addr_filter)) {
4580 free_rbufs(info, start, end);
4585 info->icount.rxshort++;
4588 info->icount.rxcrc++;
4589 if (!(info->params.crc_type & HDLC_CRC_RETURN_EX))
4595 info->netdev->stats.rx_errors++;
4596 info->netdev->stats.rx_frame_errors++;
4601 info->device_name, status, framesize));
4602 DBGDATA(info, info->rbufs[start].buf, min_t(int, framesize, info->rbuf_fill_level), "rx");
4605 if (!(info->params.crc_type & HDLC_CRC_RETURN_EX)) {
4610 if (framesize > info->max_frame_size + crc_size)
4611 info->icount.rxlong++;
4616 unsigned char *p = info->tmp_rbuf;
4617 info->tmp_rbuf_count = framesize;
4619 info->icount.rxok++;
4622 int partial_count = min_t(int, copy_count, info->rbuf_fill_level);
4623 memcpy(p, info->rbufs[i].buf, partial_count);
4626 if (++i == info->rbuf_count)
4630 if (info->params.crc_type & HDLC_CRC_RETURN_EX) {
4636 if (info->netcount)
4637 hdlcdev_rx(info,info->tmp_rbuf, framesize);
4640 ldisc_receive_buf(tty, info->tmp_rbuf, NULL,
4644 free_rbufs(info, start, end);
4655 static bool rx_get_buf(struct slgt_info *info)
4657 unsigned int i = info->rbuf_current;
4660 if (!desc_complete(info->rbufs[i]))
4662 count = desc_count(info->rbufs[i]);
4663 switch(info->params.mode) {
4668 if (desc_residue(info->rbufs[i]))
4672 DBGDATA(info, info->rbufs[i].buf, count, "rx");
4675 ldisc_receive_buf(info->port.tty, info->rbufs[i].buf, NULL,
4677 free_rbufs(info, i, i);
4681 static void reset_tbufs(struct slgt_info *info)
4684 info->tbuf_current = 0;
4685 for (i=0 ; i < info->tbuf_count ; i++) {
4686 info->tbufs[i].status = 0;
4687 info->tbufs[i].count = 0;
4694 static unsigned int free_tbuf_count(struct slgt_info *info)
4697 unsigned int i = info->tbuf_current;
4701 if (desc_count(info->tbufs[i]))
4704 if (++i == info->tbuf_count)
4706 } while (i != info->tbuf_current);
4709 if (count && (rd_reg32(info, TDCSR) & BIT0))
4719 static unsigned int tbuf_bytes(struct slgt_info *info)
4722 unsigned int i = info->tbuf_current;
4739 count = desc_count(info->tbufs[i]);
4743 active_buf_count = info->tbufs[i].buf_count;
4744 if (++i == info->tbuf_count)
4746 } while (i != info->tbuf_current);
4749 reg_value = rd_reg32(info, TDCSR);
4759 if (info->tx_active)
4769 static bool tx_load(struct slgt_info *info, const u8 *buf, unsigned int size)
4776 if (DIV_ROUND_UP(size, DMABUFSIZE) > free_tbuf_count(info))
4779 DBGDATA(info, buf, size, "tx");
4792 info->tbuf_start = i = info->tbuf_current;
4795 d = &info->tbufs[i];
4807 if ((!size && info->params.mode == MGSL_MODE_HDLC) ||
4808 info->params.mode == MGSL_MODE_RAW)
4814 if (i != info->tbuf_start)
4818 if (++i == info->tbuf_count)
4822 info->tbuf_current = i;
4825 d = &info->tbufs[info->tbuf_start];
4829 if (!info->tx_active)
4830 tx_start(info);
4831 update_tx_timer(info);
4836 static int register_test(struct slgt_info *info)
4845 wr_reg16(info, TIR, patterns[i]);
4846 wr_reg16(info, BDR, patterns[(i+1)%count]);
4847 if ((rd_reg16(info, TIR) != patterns[i]) ||
4848 (rd_reg16(info, BDR) != patterns[(i+1)%count])) {
4853 info->gpio_present = (rd_reg32(info, JCR) & BIT5) ? 1 : 0;
4854 info->init_error = rc ? 0 : DiagStatus_AddressFailure;
4858 static int irq_test(struct slgt_info *info)
4862 struct tty_struct *oldtty = info->port.tty;
4863 u32 speed = info->params.data_rate;
4865 info->params.data_rate = 921600;
4866 info->port.tty = NULL;
4868 spin_lock_irqsave(&info->lock, flags);
4869 async_mode(info);
4870 slgt_irq_on(info, IRQ_TXIDLE);
4873 wr_reg16(info, TCR,
4874 (unsigned short)(rd_reg16(info, TCR) | BIT1));
4877 wr_reg16(info, TDR, 0);
4880 info->init_error = DiagStatus_IrqFailure;
4881 info->irq_occurred = false;
4883 spin_unlock_irqrestore(&info->lock, flags);
4886 while(timeout-- && !info->irq_occurred)
4889 spin_lock_irqsave(&info->lock,flags);
4890 reset_port(info);
4891 spin_unlock_irqrestore(&info->lock,flags);
4893 info->params.data_rate = speed;
4894 info->port.tty = oldtty;
4896 info->init_error = info->irq_occurred ? 0 : DiagStatus_IrqFailure;
4897 return info->irq_occurred ? 0 : -ENODEV;
4900 static int loopback_test_rx(struct slgt_info *info)
4905 if (desc_complete(info->rbufs[0])) {
4906 count = desc_count(info->rbufs[0]);
4907 src = info->rbufs[0].buf;
4908 dest = info->tmp_rbuf;
4915 info->tmp_rbuf_count++;
4918 DBGDATA(info, info->tmp_rbuf, info->tmp_rbuf_count, "rx");
4924 static int loopback_test(struct slgt_info *info)
4934 struct tty_struct *oldtty = info->port.tty;
4937 memcpy(¶ms, &info->params, sizeof(params));
4939 info->params.mode = MGSL_MODE_ASYNC;
4940 info->params.data_rate = 921600;
4941 info->params.loopback = 1;
4942 info->port.tty = NULL;
4948 info->tmp_rbuf_count = 0;
4949 memset(info->tmp_rbuf, 0, TESTFRAMESIZE);
4952 spin_lock_irqsave(&info->lock,flags);
4953 async_mode(info);
4954 rx_start(info);
4955 tx_load(info, buf, count);
4956 spin_unlock_irqrestore(&info->lock, flags);
4961 if (loopback_test_rx(info)) {
4968 if (!rc && (info->tmp_rbuf_count != count ||
4969 memcmp(buf, info->tmp_rbuf, count))) {
4973 spin_lock_irqsave(&info->lock,flags);
4974 reset_adapter(info);
4975 spin_unlock_irqrestore(&info->lock,flags);
4977 memcpy(&info->params, ¶ms, sizeof(info->params));
4978 info->port.tty = oldtty;
4980 info->init_error = rc ? DiagStatus_DmaFailure : 0;
4984 static int adapter_test(struct slgt_info *info)
4986 DBGINFO(("testing %s\n", info->device_name));
4987 if (register_test(info) < 0) {
4989 info->device_name, info->phys_reg_addr);
4990 } else if (irq_test(info) < 0) {
4992 info->device_name, info->irq_level);
4993 } else if (loopback_test(info) < 0) {
4994 printk("loopback test failure %s\n", info->device_name);
4996 return info->init_error;
5004 struct slgt_info *info = from_timer(info, t, tx_timer);
5007 DBGINFO(("%s tx_timeout\n", info->device_name));
5008 if(info->tx_active && info->params.mode == MGSL_MODE_HDLC) {
5009 info->icount.txtimeout++;
5011 spin_lock_irqsave(&info->lock,flags);
5012 tx_stop(info);
5013 spin_unlock_irqrestore(&info->lock,flags);
5016 if (info->netcount)
5017 hdlcdev_tx_done(info);
5020 bh_transmit(info);
5028 struct slgt_info *info = from_timer(info, t, rx_timer);
5031 DBGINFO(("%s rx_timeout\n", info->device_name));
5032 spin_lock_irqsave(&info->lock, flags);
5033 info->pending_bh |= BH_RECEIVE;
5034 spin_unlock_irqrestore(&info->lock, flags);
5035 bh_handler(&info->task);