--- /dev/null
+/* $Id: icn.c,v 1.65.6.8 2001/09/23 22:24:55 kai Exp $
+ *
+ * ISDN low-level module for the ICN active ISDN-Card.
+ *
+ * Copyright 1994,95,96 by Fritz Elfert (fritz@isdn4linux.de)
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include "icn.h"
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+
+static int portbase = ICN_BASEADDR;
+static unsigned long membase = ICN_MEMADDR;
+static char *icn_id = "\0";
+static char *icn_id2 = "\0";
+
+MODULE_DESCRIPTION("ISDN4Linux: Driver for ICN active ISDN card");
+MODULE_AUTHOR("Fritz Elfert");
+MODULE_LICENSE("GPL");
+module_param(portbase, int, 0);
+MODULE_PARM_DESC(portbase, "Port address of first card");
+module_param(membase, ulong, 0);
+MODULE_PARM_DESC(membase, "Shared memory address of all cards");
+module_param(icn_id, charp, 0);
+MODULE_PARM_DESC(icn_id, "ID-String of first card");
+module_param(icn_id2, charp, 0);
+MODULE_PARM_DESC(icn_id2, "ID-String of first card, second S0 (4B only)");
+
+/*
+ * Verbose bootcode- and protocol-downloading.
+ */
+#undef BOOT_DEBUG
+
+/*
+ * Verbose Shmem-Mapping.
+ */
+#undef MAP_DEBUG
+
+static char
+*revision = "$Revision: 1.65.6.8 $";
+
+static int icn_addcard(int, char *, char *);
+
+/*
+ * Free send-queue completely.
+ * Parameter:
+ * card = pointer to card struct
+ * channel = channel number
+ */
+static void
+icn_free_queue(icn_card *card, int channel)
+{
+ struct sk_buff_head *queue = &card->spqueue[channel];
+ struct sk_buff *skb;
+
+ skb_queue_purge(queue);
+ card->xlen[channel] = 0;
+ card->sndcount[channel] = 0;
+ if ((skb = card->xskb[channel])) {
+ card->xskb[channel] = NULL;
+ dev_kfree_skb(skb);
+ }
+}
+
+/* Put a value into a shift-register, highest bit first.
+ * Parameters:
+ * port = port for output (bit 0 is significant)
+ * val = value to be output
+ * firstbit = Bit-Number of highest bit
+ * bitcount = Number of bits to output
+ */
+static inline void
+icn_shiftout(unsigned short port,
+ unsigned long val,
+ int firstbit,
+ int bitcount)
+{
+
+ register u_char s;
+ register u_char c;
+
+ for (s = firstbit, c = bitcount; c > 0; s--, c--)
+ OUTB_P((u_char) ((val >> s) & 1) ? 0xff : 0, port);
+}
+
+/*
+ * disable a cards shared memory
+ */
+static inline void
+icn_disable_ram(icn_card *card)
+{
+ OUTB_P(0, ICN_MAPRAM);
+}
+
+/*
+ * enable a cards shared memory
+ */
+static inline void
+icn_enable_ram(icn_card *card)
+{
+ OUTB_P(0xff, ICN_MAPRAM);
+}
+
+/*
+ * Map a cards channel0 (Bank0/Bank8) or channel1 (Bank4/Bank12)
+ *
+ * must called with holding the devlock
+ */
+static inline void
+icn_map_channel(icn_card *card, int channel)
+{
+#ifdef MAP_DEBUG
+ printk(KERN_DEBUG "icn_map_channel %d %d\n", dev.channel, channel);
+#endif
+ if ((channel == dev.channel) && (card == dev.mcard))
+ return;
+ if (dev.mcard)
+ icn_disable_ram(dev.mcard);
+ icn_shiftout(ICN_BANK, chan2bank[channel], 3, 4); /* Select Bank */
+ icn_enable_ram(card);
+ dev.mcard = card;
+ dev.channel = channel;
+#ifdef MAP_DEBUG
+ printk(KERN_DEBUG "icn_map_channel done\n");
+#endif
+}
+
+/*
+ * Lock a cards channel.
+ * Return 0 if requested card/channel is unmapped (failure).
+ * Return 1 on success.
+ *
+ * must called with holding the devlock
+ */
+static inline int
+icn_lock_channel(icn_card *card, int channel)
+{
+ register int retval;
+
+#ifdef MAP_DEBUG
+ printk(KERN_DEBUG "icn_lock_channel %d\n", channel);
+#endif
+ if ((dev.channel == channel) && (card == dev.mcard)) {
+ dev.chanlock++;
+ retval = 1;
+#ifdef MAP_DEBUG
+ printk(KERN_DEBUG "icn_lock_channel %d OK\n", channel);
+#endif
+ } else {
+ retval = 0;
+#ifdef MAP_DEBUG
+ printk(KERN_DEBUG "icn_lock_channel %d FAILED, dc=%d\n", channel, dev.channel);
+#endif
+ }
+ return retval;
+}
+
+/*
+ * Release current card/channel lock
+ *
+ * must called with holding the devlock
+ */
+static inline void
+__icn_release_channel(void)
+{
+#ifdef MAP_DEBUG
+ printk(KERN_DEBUG "icn_release_channel l=%d\n", dev.chanlock);
+#endif
+ if (dev.chanlock > 0)
+ dev.chanlock--;
+}
+
+/*
+ * Release current card/channel lock
+ */
+static inline void
+icn_release_channel(void)
+{
+ ulong flags;
+
+ spin_lock_irqsave(&dev.devlock, flags);
+ __icn_release_channel();
+ spin_unlock_irqrestore(&dev.devlock, flags);
+}
+
+/*
+ * Try to map and lock a cards channel.
+ * Return 1 on success, 0 on failure.
+ */
+static inline int
+icn_trymaplock_channel(icn_card *card, int channel)
+{
+ ulong flags;
+
+#ifdef MAP_DEBUG
+ printk(KERN_DEBUG "trymaplock c=%d dc=%d l=%d\n", channel, dev.channel,
+ dev.chanlock);
+#endif
+ spin_lock_irqsave(&dev.devlock, flags);
+ if ((!dev.chanlock) ||
+ ((dev.channel == channel) && (dev.mcard == card))) {
+ dev.chanlock++;
+ icn_map_channel(card, channel);
+ spin_unlock_irqrestore(&dev.devlock, flags);
+#ifdef MAP_DEBUG
+ printk(KERN_DEBUG "trymaplock %d OK\n", channel);
+#endif
+ return 1;
+ }
+ spin_unlock_irqrestore(&dev.devlock, flags);
+#ifdef MAP_DEBUG
+ printk(KERN_DEBUG "trymaplock %d FAILED\n", channel);
+#endif
+ return 0;
+}
+
+/*
+ * Release current card/channel lock,
+ * then map same or other channel without locking.
+ */
+static inline void
+icn_maprelease_channel(icn_card *card, int channel)
+{
+ ulong flags;
+
+#ifdef MAP_DEBUG
+ printk(KERN_DEBUG "map_release c=%d l=%d\n", channel, dev.chanlock);
+#endif
+ spin_lock_irqsave(&dev.devlock, flags);
+ if (dev.chanlock > 0)
+ dev.chanlock--;
+ if (!dev.chanlock)
+ icn_map_channel(card, channel);
+ spin_unlock_irqrestore(&dev.devlock, flags);
+}
+
+/* Get Data from the B-Channel, assemble fragmented packets and put them
+ * into receive-queue. Wake up any B-Channel-reading processes.
+ * This routine is called via timer-callback from icn_pollbchan().
+ */
+
+static void
+icn_pollbchan_receive(int channel, icn_card *card)
+{
+ int mch = channel + ((card->secondhalf) ? 2 : 0);
+ int eflag;
+ int cnt;
+ struct sk_buff *skb;
+
+ if (icn_trymaplock_channel(card, mch)) {
+ while (rbavl) {
+ cnt = readb(&rbuf_l);
+ if ((card->rcvidx[channel] + cnt) > 4000) {
+ printk(KERN_WARNING
+ "icn: (%s) bogus packet on ch%d, dropping.\n",
+ CID,
+ channel + 1);
+ card->rcvidx[channel] = 0;
+ eflag = 0;
+ } else {
+ memcpy_fromio(&card->rcvbuf[channel][card->rcvidx[channel]],
+ &rbuf_d, cnt);
+ card->rcvidx[channel] += cnt;
+ eflag = readb(&rbuf_f);
+ }
+ rbnext;
+ icn_maprelease_channel(card, mch & 2);
+ if (!eflag) {
+ if ((cnt = card->rcvidx[channel])) {
+ if (!(skb = dev_alloc_skb(cnt))) {
+ printk(KERN_WARNING "icn: receive out of memory\n");
+ break;
+ }
+ memcpy(skb_put(skb, cnt), card->rcvbuf[channel], cnt);
+ card->rcvidx[channel] = 0;
+ card->interface.rcvcallb_skb(card->myid, channel, skb);
+ }
+ }
+ if (!icn_trymaplock_channel(card, mch))
+ break;
+ }
+ icn_maprelease_channel(card, mch & 2);
+ }
+}
+
+/* Send data-packet to B-Channel, split it up into fragments of
+ * ICN_FRAGSIZE length. If last fragment is sent out, signal
+ * success to upper layers via statcallb with ISDN_STAT_BSENT argument.
+ * This routine is called via timer-callback from icn_pollbchan() or
+ * directly from icn_sendbuf().
+ */
+
+static void
+icn_pollbchan_send(int channel, icn_card *card)
+{
+ int mch = channel + ((card->secondhalf) ? 2 : 0);
+ int cnt;
+ unsigned long flags;
+ struct sk_buff *skb;
+ isdn_ctrl cmd;
+
+ if (!(card->sndcount[channel] || card->xskb[channel] ||
+ !skb_queue_empty(&card->spqueue[channel])))
+ return;
+ if (icn_trymaplock_channel(card, mch)) {
+ while (sbfree &&
+ (card->sndcount[channel] ||
+ !skb_queue_empty(&card->spqueue[channel]) ||
+ card->xskb[channel])) {
+ spin_lock_irqsave(&card->lock, flags);
+ if (card->xmit_lock[channel]) {
+ spin_unlock_irqrestore(&card->lock, flags);
+ break;
+ }
+ card->xmit_lock[channel]++;
+ spin_unlock_irqrestore(&card->lock, flags);
+ skb = card->xskb[channel];
+ if (!skb) {
+ skb = skb_dequeue(&card->spqueue[channel]);
+ if (skb) {
+ /* Pop ACK-flag off skb.
+ * Store length to xlen.
+ */
+ if (*(skb_pull(skb, 1)))
+ card->xlen[channel] = skb->len;
+ else
+ card->xlen[channel] = 0;
+ }
+ }
+ if (!skb)
+ break;
+ if (skb->len > ICN_FRAGSIZE) {
+ writeb(0xff, &sbuf_f);
+ cnt = ICN_FRAGSIZE;
+ } else {
+ writeb(0x0, &sbuf_f);
+ cnt = skb->len;
+ }
+ writeb(cnt, &sbuf_l);
+ memcpy_toio(&sbuf_d, skb->data, cnt);
+ skb_pull(skb, cnt);
+ sbnext; /* switch to next buffer */
+ icn_maprelease_channel(card, mch & 2);
+ spin_lock_irqsave(&card->lock, flags);
+ card->sndcount[channel] -= cnt;
+ if (!skb->len) {
+ if (card->xskb[channel])
+ card->xskb[channel] = NULL;
+ card->xmit_lock[channel] = 0;
+ spin_unlock_irqrestore(&card->lock, flags);
+ dev_kfree_skb(skb);
+ if (card->xlen[channel]) {
+ cmd.command = ISDN_STAT_BSENT;
+ cmd.driver = card->myid;
+ cmd.arg = channel;
+ cmd.parm.length = card->xlen[channel];
+ card->interface.statcallb(&cmd);
+ }
+ } else {
+ card->xskb[channel] = skb;
+ card->xmit_lock[channel] = 0;
+ spin_unlock_irqrestore(&card->lock, flags);
+ }
+ if (!icn_trymaplock_channel(card, mch))
+ break;
+ }
+ icn_maprelease_channel(card, mch & 2);
+ }
+}
+
+/* Send/Receive Data to/from the B-Channel.
+ * This routine is called via timer-callback.
+ * It schedules itself while any B-Channel is open.
+ */
+
+static void
+icn_pollbchan(unsigned long data)
+{
+ icn_card *card = (icn_card *) data;
+ unsigned long flags;
+
+ if (card->flags & ICN_FLAGS_B1ACTIVE) {
+ icn_pollbchan_receive(0, card);
+ icn_pollbchan_send(0, card);
+ }
+ if (card->flags & ICN_FLAGS_B2ACTIVE) {
+ icn_pollbchan_receive(1, card);
+ icn_pollbchan_send(1, card);
+ }
+ if (card->flags & (ICN_FLAGS_B1ACTIVE | ICN_FLAGS_B2ACTIVE)) {
+ /* schedule b-channel polling again */
+ spin_lock_irqsave(&card->lock, flags);
+ mod_timer(&card->rb_timer, jiffies + ICN_TIMER_BCREAD);
+ card->flags |= ICN_FLAGS_RBTIMER;
+ spin_unlock_irqrestore(&card->lock, flags);
+ } else
+ card->flags &= ~ICN_FLAGS_RBTIMER;
+}
+
+typedef struct icn_stat {
+ char *statstr;
+ int command;
+ int action;
+} icn_stat;
+/* *INDENT-OFF* */
+static icn_stat icn_stat_table[] =
+{
+ {"BCON_", ISDN_STAT_BCONN, 1}, /* B-Channel connected */
+ {"BDIS_", ISDN_STAT_BHUP, 2}, /* B-Channel disconnected */
+ /*
+ ** add d-channel connect and disconnect support to link-level
+ */
+ {"DCON_", ISDN_STAT_DCONN, 10}, /* D-Channel connected */
+ {"DDIS_", ISDN_STAT_DHUP, 11}, /* D-Channel disconnected */
+ {"DCAL_I", ISDN_STAT_ICALL, 3}, /* Incoming call dialup-line */
+ {"DSCA_I", ISDN_STAT_ICALL, 3}, /* Incoming call 1TR6-SPV */
+ {"FCALL", ISDN_STAT_ICALL, 4}, /* Leased line connection up */
+ {"CIF", ISDN_STAT_CINF, 5}, /* Charge-info, 1TR6-type */
+ {"AOC", ISDN_STAT_CINF, 6}, /* Charge-info, DSS1-type */
+ {"CAU", ISDN_STAT_CAUSE, 7}, /* Cause code */
+ {"TEI OK", ISDN_STAT_RUN, 0}, /* Card connected to wallplug */
+ {"E_L1: ACT FAIL", ISDN_STAT_BHUP, 8}, /* Layer-1 activation failed */
+ {"E_L2: DATA LIN", ISDN_STAT_BHUP, 8}, /* Layer-2 data link lost */
+ {"E_L1: ACTIVATION FAILED",
+ ISDN_STAT_BHUP, 8}, /* Layer-1 activation failed */
+ {NULL, 0, -1}
+};
+/* *INDENT-ON* */
+
+
+/*
+ * Check Statusqueue-Pointer from isdn-cards.
+ * If there are new status-replies from the interface, check
+ * them against B-Channel-connects/disconnects and set flags accordingly.
+ * Wake-Up any processes, who are reading the status-device.
+ * If there are B-Channels open, initiate a timer-callback to
+ * icn_pollbchan().
+ * This routine is called periodically via timer.
+ */
+
+static void
+icn_parse_status(u_char *status, int channel, icn_card *card)
+{
+ icn_stat *s = icn_stat_table;
+ int action = -1;
+ unsigned long flags;
+ isdn_ctrl cmd;
+
+ while (s->statstr) {
+ if (!strncmp(status, s->statstr, strlen(s->statstr))) {
+ cmd.command = s->command;
+ action = s->action;
+ break;
+ }
+ s++;
+ }
+ if (action == -1)
+ return;
+ cmd.driver = card->myid;
+ cmd.arg = channel;
+ switch (action) {
+ case 11:
+ spin_lock_irqsave(&card->lock, flags);
+ icn_free_queue(card, channel);
+ card->rcvidx[channel] = 0;
+
+ if (card->flags &
+ ((channel) ? ICN_FLAGS_B2ACTIVE : ICN_FLAGS_B1ACTIVE)) {
+
+ isdn_ctrl ncmd;
+
+ card->flags &= ~((channel) ?
+ ICN_FLAGS_B2ACTIVE : ICN_FLAGS_B1ACTIVE);
+
+ memset(&ncmd, 0, sizeof(ncmd));
+
+ ncmd.driver = card->myid;
+ ncmd.arg = channel;
+ ncmd.command = ISDN_STAT_BHUP;
+ spin_unlock_irqrestore(&card->lock, flags);
+ card->interface.statcallb(&cmd);
+ } else
+ spin_unlock_irqrestore(&card->lock, flags);
+ break;
+ case 1:
+ spin_lock_irqsave(&card->lock, flags);
+ icn_free_queue(card, channel);
+ card->flags |= (channel) ?
+ ICN_FLAGS_B2ACTIVE : ICN_FLAGS_B1ACTIVE;
+ spin_unlock_irqrestore(&card->lock, flags);
+ break;
+ case 2:
+ spin_lock_irqsave(&card->lock, flags);
+ card->flags &= ~((channel) ?
+ ICN_FLAGS_B2ACTIVE : ICN_FLAGS_B1ACTIVE);
+ icn_free_queue(card, channel);
+ card->rcvidx[channel] = 0;
+ spin_unlock_irqrestore(&card->lock, flags);
+ break;
+ case 3:
+ {
+ char *t = status + 6;
+ char *s = strchr(t, ',');
+
+ *s++ = '\0';
+ strlcpy(cmd.parm.setup.phone, t,
+ sizeof(cmd.parm.setup.phone));
+ s = strchr(t = s, ',');
+ *s++ = '\0';
+ if (!strlen(t))
+ cmd.parm.setup.si1 = 0;
+ else
+ cmd.parm.setup.si1 =
+ simple_strtoul(t, NULL, 10);
+ s = strchr(t = s, ',');
+ *s++ = '\0';
+ if (!strlen(t))
+ cmd.parm.setup.si2 = 0;
+ else
+ cmd.parm.setup.si2 =
+ simple_strtoul(t, NULL, 10);
+ strlcpy(cmd.parm.setup.eazmsn, s,
+ sizeof(cmd.parm.setup.eazmsn));
+ }
+ cmd.parm.setup.plan = 0;
+ cmd.parm.setup.screen = 0;
+ break;
+ case 4:
+ sprintf(cmd.parm.setup.phone, "LEASED%d", card->myid);
+ sprintf(cmd.parm.setup.eazmsn, "%d", channel + 1);
+ cmd.parm.setup.si1 = 7;
+ cmd.parm.setup.si2 = 0;
+ cmd.parm.setup.plan = 0;
+ cmd.parm.setup.screen = 0;
+ break;
+ case 5:
+ strlcpy(cmd.parm.num, status + 3, sizeof(cmd.parm.num));
+ break;
+ case 6:
+ snprintf(cmd.parm.num, sizeof(cmd.parm.num), "%d",
+ (int) simple_strtoul(status + 7, NULL, 16));
+ break;
+ case 7:
+ status += 3;
+ if (strlen(status) == 4)
+ snprintf(cmd.parm.num, sizeof(cmd.parm.num), "%s%c%c",
+ status + 2, *status, *(status + 1));
+ else
+ strlcpy(cmd.parm.num, status + 1, sizeof(cmd.parm.num));
+ break;
+ case 8:
+ spin_lock_irqsave(&card->lock, flags);
+ card->flags &= ~ICN_FLAGS_B1ACTIVE;
+ icn_free_queue(card, 0);
+ card->rcvidx[0] = 0;
+ spin_unlock_irqrestore(&card->lock, flags);
+ cmd.arg = 0;
+ cmd.driver = card->myid;
+ card->interface.statcallb(&cmd);
+ cmd.command = ISDN_STAT_DHUP;
+ cmd.arg = 0;
+ cmd.driver = card->myid;
+ card->interface.statcallb(&cmd);
+ cmd.command = ISDN_STAT_BHUP;
+ spin_lock_irqsave(&card->lock, flags);
+ card->flags &= ~ICN_FLAGS_B2ACTIVE;
+ icn_free_queue(card, 1);
+ card->rcvidx[1] = 0;
+ spin_unlock_irqrestore(&card->lock, flags);
+ cmd.arg = 1;
+ cmd.driver = card->myid;
+ card->interface.statcallb(&cmd);
+ cmd.command = ISDN_STAT_DHUP;
+ cmd.arg = 1;
+ cmd.driver = card->myid;
+ break;
+ }
+ card->interface.statcallb(&cmd);
+ return;
+}
+
+static void
+icn_putmsg(icn_card *card, unsigned char c)
+{
+ ulong flags;
+
+ spin_lock_irqsave(&card->lock, flags);
+ *card->msg_buf_write++ = (c == 0xff) ? '\n' : c;
+ if (card->msg_buf_write == card->msg_buf_read) {
+ if (++card->msg_buf_read > card->msg_buf_end)
+ card->msg_buf_read = card->msg_buf;
+ }
+ if (card->msg_buf_write > card->msg_buf_end)
+ card->msg_buf_write = card->msg_buf;
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static void
+icn_polldchan(unsigned long data)
+{
+ icn_card *card = (icn_card *) data;
+ int mch = card->secondhalf ? 2 : 0;
+ int avail = 0;
+ int left;
+ u_char c;
+ int ch;
+ unsigned long flags;
+ int i;
+ u_char *p;
+ isdn_ctrl cmd;
+
+ if (icn_trymaplock_channel(card, mch)) {
+ avail = msg_avail;
+ for (left = avail, i = readb(&msg_o); left > 0; i++, left--) {
+ c = readb(&dev.shmem->comm_buffers.iopc_buf[i & 0xff]);
+ icn_putmsg(card, c);
+ if (c == 0xff) {
+ card->imsg[card->iptr] = 0;
+ card->iptr = 0;
+ if (card->imsg[0] == '0' && card->imsg[1] >= '0' &&
+ card->imsg[1] <= '2' && card->imsg[2] == ';') {
+ ch = (card->imsg[1] - '0') - 1;
+ p = &card->imsg[3];
+ icn_parse_status(p, ch, card);
+ } else {
+ p = card->imsg;
+ if (!strncmp(p, "DRV1.", 5)) {
+ u_char vstr[10];
+ u_char *q = vstr;
+
+ printk(KERN_INFO "icn: (%s) %s\n", CID, p);
+ if (!strncmp(p + 7, "TC", 2)) {
+ card->ptype = ISDN_PTYPE_1TR6;
+ card->interface.features |= ISDN_FEATURE_P_1TR6;
+ printk(KERN_INFO
+ "icn: (%s) 1TR6-Protocol loaded and running\n", CID);
+ }
+ if (!strncmp(p + 7, "EC", 2)) {
+ card->ptype = ISDN_PTYPE_EURO;
+ card->interface.features |= ISDN_FEATURE_P_EURO;
+ printk(KERN_INFO
+ "icn: (%s) Euro-Protocol loaded and running\n", CID);
+ }
+ p = strstr(card->imsg, "BRV") + 3;
+ while (*p) {
+ if (*p >= '0' && *p <= '9')
+ *q++ = *p;
+ p++;
+ }
+ *q = '\0';
+ strcat(vstr, "000");
+ vstr[3] = '\0';
+ card->fw_rev = (int) simple_strtoul(vstr, NULL, 10);
+ continue;
+
+ }
+ }
+ } else {
+ card->imsg[card->iptr] = c;
+ if (card->iptr < 59)
+ card->iptr++;
+ }
+ }
+ writeb((readb(&msg_o) + avail) & 0xff, &msg_o);
+ icn_release_channel();
+ }
+ if (avail) {
+ cmd.command = ISDN_STAT_STAVAIL;
+ cmd.driver = card->myid;
+ cmd.arg = avail;
+ card->interface.statcallb(&cmd);
+ }
+ spin_lock_irqsave(&card->lock, flags);
+ if (card->flags & (ICN_FLAGS_B1ACTIVE | ICN_FLAGS_B2ACTIVE))
+ if (!(card->flags & ICN_FLAGS_RBTIMER)) {
+ /* schedule b-channel polling */
+ card->flags |= ICN_FLAGS_RBTIMER;
+ del_timer(&card->rb_timer);
+ card->rb_timer.function = icn_pollbchan;
+ card->rb_timer.data = (unsigned long) card;
+ card->rb_timer.expires = jiffies + ICN_TIMER_BCREAD;
+ add_timer(&card->rb_timer);
+ }
+ /* schedule again */
+ mod_timer(&card->st_timer, jiffies + ICN_TIMER_DCREAD);
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+/* Append a packet to the transmit buffer-queue.
+ * Parameters:
+ * channel = Number of B-channel
+ * skb = pointer to sk_buff
+ * card = pointer to card-struct
+ * Return:
+ * Number of bytes transferred, -E??? on error
+ */
+
+static int
+icn_sendbuf(int channel, int ack, struct sk_buff *skb, icn_card *card)
+{
+ int len = skb->len;
+ unsigned long flags;
+ struct sk_buff *nskb;
+
+ if (len > 4000) {
+ printk(KERN_WARNING
+ "icn: Send packet too large\n");
+ return -EINVAL;
+ }
+ if (len) {
+ if (!(card->flags & (channel) ? ICN_FLAGS_B2ACTIVE : ICN_FLAGS_B1ACTIVE))
+ return 0;
+ if (card->sndcount[channel] > ICN_MAX_SQUEUE)
+ return 0;
+#warning TODO test headroom or use skb->nb to flag ACK
+ nskb = skb_clone(skb, GFP_ATOMIC);
+ if (nskb) {
+ /* Push ACK flag as one
+ * byte in front of data.
+ */
+ *(skb_push(nskb, 1)) = ack ? 1 : 0;
+ skb_queue_tail(&card->spqueue[channel], nskb);
+ dev_kfree_skb(skb);
+ } else
+ len = 0;
+ spin_lock_irqsave(&card->lock, flags);
+ card->sndcount[channel] += len;
+ spin_unlock_irqrestore(&card->lock, flags);
+ }
+ return len;
+}
+
+/*
+ * Check card's status after starting the bootstrap loader.
+ * On entry, the card's shared memory has already to be mapped.
+ * Return:
+ * 0 on success (Boot loader ready)
+ * -EIO on failure (timeout)
+ */
+static int
+icn_check_loader(int cardnumber)
+{
+ int timer = 0;
+
+ while (1) {
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Loader %d ?\n", cardnumber);
+#endif
+ if (readb(&dev.shmem->data_control.scns) ||
+ readb(&dev.shmem->data_control.scnr)) {
+ if (timer++ > 5) {
+ printk(KERN_WARNING
+ "icn: Boot-Loader %d timed out.\n",
+ cardnumber);
+ icn_release_channel();
+ return -EIO;
+ }
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Loader %d TO?\n", cardnumber);
+#endif
+ msleep_interruptible(ICN_BOOT_TIMEOUT1);
+ } else {
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Loader %d OK\n", cardnumber);
+#endif
+ icn_release_channel();
+ return 0;
+ }
+ }
+}
+
+/* Load the boot-code into the interface-card's memory and start it.
+ * Always called from user-process.
+ *
+ * Parameters:
+ * buffer = pointer to packet
+ * Return:
+ * 0 if successfully loaded
+ */
+
+#ifdef BOOT_DEBUG
+#define SLEEP(sec) { \
+ int slsec = sec; \
+ printk(KERN_DEBUG "SLEEP(%d)\n", slsec); \
+ while (slsec) { \
+ msleep_interruptible(1000); \
+ slsec--; \
+ } \
+ }
+#else
+#define SLEEP(sec)
+#endif
+
+static int
+icn_loadboot(u_char __user *buffer, icn_card *card)
+{
+ int ret;
+ u_char *codebuf;
+ unsigned long flags;
+
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "icn_loadboot called, buffaddr=%08lx\n", (ulong) buffer);
+#endif
+ if (!(codebuf = kmalloc(ICN_CODE_STAGE1, GFP_KERNEL))) {
+ printk(KERN_WARNING "icn: Could not allocate code buffer\n");
+ ret = -ENOMEM;
+ goto out;
+ }
+ if (copy_from_user(codebuf, buffer, ICN_CODE_STAGE1)) {
+ ret = -EFAULT;
+ goto out_kfree;
+ }
+ if (!card->rvalid) {
+ if (!request_region(card->port, ICN_PORTLEN, card->regname)) {
+ printk(KERN_WARNING
+ "icn: (%s) ports 0x%03x-0x%03x in use.\n",
+ CID,
+ card->port,
+ card->port + ICN_PORTLEN);
+ ret = -EBUSY;
+ goto out_kfree;
+ }
+ card->rvalid = 1;
+ if (card->doubleS0)
+ card->other->rvalid = 1;
+ }
+ if (!dev.mvalid) {
+ if (!request_mem_region(dev.memaddr, 0x4000, "icn-isdn (all cards)")) {
+ printk(KERN_WARNING
+ "icn: memory at 0x%08lx in use.\n", dev.memaddr);
+ ret = -EBUSY;
+ goto out_kfree;
+ }
+ dev.shmem = ioremap(dev.memaddr, 0x4000);
+ dev.mvalid = 1;
+ }
+ OUTB_P(0, ICN_RUN); /* Reset Controller */
+ OUTB_P(0, ICN_MAPRAM); /* Disable RAM */
+ icn_shiftout(ICN_CFG, 0x0f, 3, 4); /* Windowsize= 16k */
+ icn_shiftout(ICN_CFG, dev.memaddr, 23, 10); /* Set RAM-Addr. */
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "shmem=%08lx\n", dev.memaddr);
+#endif
+ SLEEP(1);
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Map Bank 0\n");
+#endif
+ spin_lock_irqsave(&dev.devlock, flags);
+ icn_map_channel(card, 0); /* Select Bank 0 */
+ icn_lock_channel(card, 0); /* Lock Bank 0 */
+ spin_unlock_irqrestore(&dev.devlock, flags);
+ SLEEP(1);
+ memcpy_toio(dev.shmem, codebuf, ICN_CODE_STAGE1); /* Copy code */
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Bootloader transferred\n");
+#endif
+ if (card->doubleS0) {
+ SLEEP(1);
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Map Bank 8\n");
+#endif
+ spin_lock_irqsave(&dev.devlock, flags);
+ __icn_release_channel();
+ icn_map_channel(card, 2); /* Select Bank 8 */
+ icn_lock_channel(card, 2); /* Lock Bank 8 */
+ spin_unlock_irqrestore(&dev.devlock, flags);
+ SLEEP(1);
+ memcpy_toio(dev.shmem, codebuf, ICN_CODE_STAGE1); /* Copy code */
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Bootloader transferred\n");
+#endif
+ }
+ SLEEP(1);
+ OUTB_P(0xff, ICN_RUN); /* Start Boot-Code */
+ if ((ret = icn_check_loader(card->doubleS0 ? 2 : 1))) {
+ goto out_kfree;
+ }
+ if (!card->doubleS0) {
+ ret = 0;
+ goto out_kfree;
+ }
+ /* reached only, if we have a Double-S0-Card */
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Map Bank 0\n");
+#endif
+ spin_lock_irqsave(&dev.devlock, flags);
+ icn_map_channel(card, 0); /* Select Bank 0 */
+ icn_lock_channel(card, 0); /* Lock Bank 0 */
+ spin_unlock_irqrestore(&dev.devlock, flags);
+ SLEEP(1);
+ ret = (icn_check_loader(1));
+
+out_kfree:
+ kfree(codebuf);
+out:
+ return ret;
+}
+
+static int
+icn_loadproto(u_char __user *buffer, icn_card *card)
+{
+ register u_char __user *p = buffer;
+ u_char codebuf[256];
+ uint left = ICN_CODE_STAGE2;
+ uint cnt;
+ int timer;
+ unsigned long flags;
+
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "icn_loadproto called\n");
+#endif
+ if (!access_ok(VERIFY_READ, buffer, ICN_CODE_STAGE2))
+ return -EFAULT;
+ timer = 0;
+ spin_lock_irqsave(&dev.devlock, flags);
+ if (card->secondhalf) {
+ icn_map_channel(card, 2);
+ icn_lock_channel(card, 2);
+ } else {
+ icn_map_channel(card, 0);
+ icn_lock_channel(card, 0);
+ }
+ spin_unlock_irqrestore(&dev.devlock, flags);
+ while (left) {
+ if (sbfree) { /* If there is a free buffer... */
+ cnt = left;
+ if (cnt > 256)
+ cnt = 256;
+ if (copy_from_user(codebuf, p, cnt)) {
+ icn_maprelease_channel(card, 0);
+ return -EFAULT;
+ }
+ memcpy_toio(&sbuf_l, codebuf, cnt); /* copy data */
+ sbnext; /* switch to next buffer */
+ p += cnt;
+ left -= cnt;
+ timer = 0;
+ } else {
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "boot 2 !sbfree\n");
+#endif
+ if (timer++ > 5) {
+ icn_maprelease_channel(card, 0);
+ return -EIO;
+ }
+ schedule_timeout_interruptible(10);
+ }
+ }
+ writeb(0x20, &sbuf_n);
+ timer = 0;
+ while (1) {
+ if (readb(&cmd_o) || readb(&cmd_i)) {
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Proto?\n");
+#endif
+ if (timer++ > 5) {
+ printk(KERN_WARNING
+ "icn: (%s) Protocol timed out.\n",
+ CID);
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Proto TO!\n");
+#endif
+ icn_maprelease_channel(card, 0);
+ return -EIO;
+ }
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Proto TO?\n");
+#endif
+ msleep_interruptible(ICN_BOOT_TIMEOUT1);
+ } else {
+ if ((card->secondhalf) || (!card->doubleS0)) {
+#ifdef BOOT_DEBUG
+ printk(KERN_DEBUG "Proto loaded, install poll-timer %d\n",
+ card->secondhalf);
+#endif
+ spin_lock_irqsave(&card->lock, flags);
+ init_timer(&card->st_timer);
+ card->st_timer.expires = jiffies + ICN_TIMER_DCREAD;
+ card->st_timer.function = icn_polldchan;
+ card->st_timer.data = (unsigned long) card;
+ add_timer(&card->st_timer);
+ card->flags |= ICN_FLAGS_RUNNING;
+ if (card->doubleS0) {
+ init_timer(&card->other->st_timer);
+ card->other->st_timer.expires = jiffies + ICN_TIMER_DCREAD;
+ card->other->st_timer.function = icn_polldchan;
+ card->other->st_timer.data = (unsigned long) card->other;
+ add_timer(&card->other->st_timer);
+ card->other->flags |= ICN_FLAGS_RUNNING;
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
+ }
+ icn_maprelease_channel(card, 0);
+ return 0;
+ }
+ }
+}
+
+/* Read the Status-replies from the Interface */
+static int
+icn_readstatus(u_char __user *buf, int len, icn_card *card)
+{
+ int count;
+ u_char __user *p;
+
+ for (p = buf, count = 0; count < len; p++, count++) {
+ if (card->msg_buf_read == card->msg_buf_write)
+ return count;
+ if (put_user(*card->msg_buf_read++, p))
+ return -EFAULT;
+ if (card->msg_buf_read > card->msg_buf_end)
+ card->msg_buf_read = card->msg_buf;
+ }
+ return count;
+}
+
+/* Put command-strings into the command-queue of the Interface */
+static int
+icn_writecmd(const u_char *buf, int len, int user, icn_card *card)
+{
+ int mch = card->secondhalf ? 2 : 0;
+ int pp;
+ int i;
+ int count;
+ int xcount;
+ int ocount;
+ int loop;
+ unsigned long flags;
+ int lastmap_channel;
+ struct icn_card *lastmap_card;
+ u_char *p;
+ isdn_ctrl cmd;
+ u_char msg[0x100];
+
+ ocount = 1;
+ xcount = loop = 0;
+ while (len) {
+ count = cmd_free;
+ if (count > len)
+ count = len;
+ if (user) {
+ if (copy_from_user(msg, buf, count))
+ return -EFAULT;
+ } else
+ memcpy(msg, buf, count);
+
+ spin_lock_irqsave(&dev.devlock, flags);
+ lastmap_card = dev.mcard;
+ lastmap_channel = dev.channel;
+ icn_map_channel(card, mch);
+
+ icn_putmsg(card, '>');
+ for (p = msg, pp = readb(&cmd_i), i = count; i > 0; i--, p++, pp
+ ++) {
+ writeb((*p == '\n') ? 0xff : *p,
+ &dev.shmem->comm_buffers.pcio_buf[pp & 0xff]);
+ len--;
+ xcount++;
+ icn_putmsg(card, *p);
+ if ((*p == '\n') && (i > 1)) {
+ icn_putmsg(card, '>');
+ ocount++;
+ }
+ ocount++;
+ }
+ writeb((readb(&cmd_i) + count) & 0xff, &cmd_i);
+ if (lastmap_card)
+ icn_map_channel(lastmap_card, lastmap_channel);
+ spin_unlock_irqrestore(&dev.devlock, flags);
+ if (len) {
+ mdelay(1);
+ if (loop++ > 20)
+ break;
+ } else
+ break;
+ }
+ if (len && (!user))
+ printk(KERN_WARNING "icn: writemsg incomplete!\n");
+ cmd.command = ISDN_STAT_STAVAIL;
+ cmd.driver = card->myid;
+ cmd.arg = ocount;
+ card->interface.statcallb(&cmd);
+ return xcount;
+}
+
+/*
+ * Delete card's pending timers, send STOP to linklevel
+ */
+static void
+icn_stopcard(icn_card *card)
+{
+ unsigned long flags;
+ isdn_ctrl cmd;
+
+ spin_lock_irqsave(&card->lock, flags);
+ if (card->flags & ICN_FLAGS_RUNNING) {
+ card->flags &= ~ICN_FLAGS_RUNNING;
+ del_timer(&card->st_timer);
+ del_timer(&card->rb_timer);
+ spin_unlock_irqrestore(&card->lock, flags);
+ cmd.command = ISDN_STAT_STOP;
+ cmd.driver = card->myid;
+ card->interface.statcallb(&cmd);
+ if (card->doubleS0)
+ icn_stopcard(card->other);
+ } else
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static void
+icn_stopallcards(void)
+{
+ icn_card *p = cards;
+
+ while (p) {
+ icn_stopcard(p);
+ p = p->next;
+ }
+}
+
+/*
+ * Unmap all cards, because some of them may be mapped accidetly during
+ * autoprobing of some network drivers (SMC-driver?)
+ */
+static void
+icn_disable_cards(void)
+{
+ icn_card *card = cards;
+
+ while (card) {
+ if (!request_region(card->port, ICN_PORTLEN, "icn-isdn")) {
+ printk(KERN_WARNING
+ "icn: (%s) ports 0x%03x-0x%03x in use.\n",
+ CID,
+ card->port,
+ card->port + ICN_PORTLEN);
+ } else {
+ OUTB_P(0, ICN_RUN); /* Reset Controller */
+ OUTB_P(0, ICN_MAPRAM); /* Disable RAM */
+ release_region(card->port, ICN_PORTLEN);
+ }
+ card = card->next;
+ }
+}
+
+static int
+icn_command(isdn_ctrl *c, icn_card *card)
+{
+ ulong a;
+ ulong flags;
+ int i;
+ char cbuf[80];
+ isdn_ctrl cmd;
+ icn_cdef cdef;
+ char __user *arg;
+
+ switch (c->command) {
+ case ISDN_CMD_IOCTL:
+ memcpy(&a, c->parm.num, sizeof(ulong));
+ arg = (char __user *)a;
+ switch (c->arg) {
+ case ICN_IOCTL_SETMMIO:
+ if (dev.memaddr != (a & 0x0ffc000)) {
+ if (!request_mem_region(a & 0x0ffc000, 0x4000, "icn-isdn (all cards)")) {
+ printk(KERN_WARNING
+ "icn: memory at 0x%08lx in use.\n",
+ a & 0x0ffc000);
+ return -EINVAL;
+ }
+ release_mem_region(a & 0x0ffc000, 0x4000);
+ icn_stopallcards();
+ spin_lock_irqsave(&card->lock, flags);
+ if (dev.mvalid) {
+ iounmap(dev.shmem);
+ release_mem_region(dev.memaddr, 0x4000);
+ }
+ dev.mvalid = 0;
+ dev.memaddr = a & 0x0ffc000;
+ spin_unlock_irqrestore(&card->lock, flags);
+ printk(KERN_INFO
+ "icn: (%s) mmio set to 0x%08lx\n",
+ CID,
+ dev.memaddr);
+ }
+ break;
+ case ICN_IOCTL_GETMMIO:
+ return (long) dev.memaddr;
+ case ICN_IOCTL_SETPORT:
+ if (a == 0x300 || a == 0x310 || a == 0x320 || a == 0x330
+ || a == 0x340 || a == 0x350 || a == 0x360 ||
+ a == 0x308 || a == 0x318 || a == 0x328 || a == 0x338
+ || a == 0x348 || a == 0x358 || a == 0x368) {
+ if (card->port != (unsigned short) a) {
+ if (!request_region((unsigned short) a, ICN_PORTLEN, "icn-isdn")) {
+ printk(KERN_WARNING
+ "icn: (%s) ports 0x%03x-0x%03x in use.\n",
+ CID, (int) a, (int) a + ICN_PORTLEN);
+ return -EINVAL;
+ }
+ release_region((unsigned short) a, ICN_PORTLEN);
+ icn_stopcard(card);
+ spin_lock_irqsave(&card->lock, flags);
+ if (card->rvalid)
+ release_region(card->port, ICN_PORTLEN);
+ card->port = (unsigned short) a;
+ card->rvalid = 0;
+ if (card->doubleS0) {
+ card->other->port = (unsigned short) a;
+ card->other->rvalid = 0;
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
+ printk(KERN_INFO
+ "icn: (%s) port set to 0x%03x\n",
+ CID, card->port);
+ }
+ } else
+ return -EINVAL;
+ break;
+ case ICN_IOCTL_GETPORT:
+ return (int) card->port;
+ case ICN_IOCTL_GETDOUBLE:
+ return (int) card->doubleS0;
+ case ICN_IOCTL_DEBUGVAR:
+ if (copy_to_user(arg,
+ &card,
+ sizeof(ulong)))
+ return -EFAULT;
+ a += sizeof(ulong);
+ {
+ ulong l = (ulong)&dev;
+ if (copy_to_user(arg,
+ &l,
+ sizeof(ulong)))
+ return -EFAULT;
+ }
+ return 0;
+ case ICN_IOCTL_LOADBOOT:
+ if (dev.firstload) {
+ icn_disable_cards();
+ dev.firstload = 0;
+ }
+ icn_stopcard(card);
+ return (icn_loadboot(arg, card));
+ case ICN_IOCTL_LOADPROTO:
+ icn_stopcard(card);
+ if ((i = (icn_loadproto(arg, card))))
+ return i;
+ if (card->doubleS0)
+ i = icn_loadproto(arg + ICN_CODE_STAGE2, card->other);
+ return i;
+ break;
+ case ICN_IOCTL_ADDCARD:
+ if (!dev.firstload)
+ return -EBUSY;
+ if (copy_from_user(&cdef,
+ arg,
+ sizeof(cdef)))
+ return -EFAULT;
+ return (icn_addcard(cdef.port, cdef.id1, cdef.id2));
+ break;
+ case ICN_IOCTL_LEASEDCFG:
+ if (a) {
+ if (!card->leased) {
+ card->leased = 1;
+ while (card->ptype == ISDN_PTYPE_UNKNOWN) {
+ msleep_interruptible(ICN_BOOT_TIMEOUT1);
+ }
+ msleep_interruptible(ICN_BOOT_TIMEOUT1);
+ sprintf(cbuf, "00;FV2ON\n01;EAZ%c\n02;EAZ%c\n",
+ (a & 1) ? '1' : 'C', (a & 2) ? '2' : 'C');
+ i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
+ printk(KERN_INFO
+ "icn: (%s) Leased-line mode enabled\n",
+ CID);
+ cmd.command = ISDN_STAT_RUN;
+ cmd.driver = card->myid;
+ cmd.arg = 0;
+ card->interface.statcallb(&cmd);
+ }
+ } else {
+ if (card->leased) {
+ card->leased = 0;
+ sprintf(cbuf, "00;FV2OFF\n");
+ i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
+ printk(KERN_INFO
+ "icn: (%s) Leased-line mode disabled\n",
+ CID);
+ cmd.command = ISDN_STAT_RUN;
+ cmd.driver = card->myid;
+ cmd.arg = 0;
+ card->interface.statcallb(&cmd);
+ }
+ }
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ break;
+ case ISDN_CMD_DIAL:
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ if (card->leased)
+ break;
+ if ((c->arg & 255) < ICN_BCH) {
+ char *p;
+ char dcode[4];
+
+ a = c->arg;
+ p = c->parm.setup.phone;
+ if (*p == 's' || *p == 'S') {
+ /* Dial for SPV */
+ p++;
+ strcpy(dcode, "SCA");
+ } else
+ /* Normal Dial */
+ strcpy(dcode, "CAL");
+ snprintf(cbuf, sizeof(cbuf),
+ "%02d;D%s_R%s,%02d,%02d,%s\n", (int) (a + 1),
+ dcode, p, c->parm.setup.si1,
+ c->parm.setup.si2, c->parm.setup.eazmsn);
+ i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
+ }
+ break;
+ case ISDN_CMD_ACCEPTD:
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ if (c->arg < ICN_BCH) {
+ a = c->arg + 1;
+ if (card->fw_rev >= 300) {
+ switch (card->l2_proto[a - 1]) {
+ case ISDN_PROTO_L2_X75I:
+ sprintf(cbuf, "%02d;BX75\n", (int) a);
+ break;
+ case ISDN_PROTO_L2_HDLC:
+ sprintf(cbuf, "%02d;BTRA\n", (int) a);
+ break;
+ }
+ i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
+ }
+ sprintf(cbuf, "%02d;DCON_R\n", (int) a);
+ i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
+ }
+ break;
+ case ISDN_CMD_ACCEPTB:
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ if (c->arg < ICN_BCH) {
+ a = c->arg + 1;
+ if (card->fw_rev >= 300)
+ switch (card->l2_proto[a - 1]) {
+ case ISDN_PROTO_L2_X75I:
+ sprintf(cbuf, "%02d;BCON_R,BX75\n", (int) a);
+ break;
+ case ISDN_PROTO_L2_HDLC:
+ sprintf(cbuf, "%02d;BCON_R,BTRA\n", (int) a);
+ break;
+ } else
+ sprintf(cbuf, "%02d;BCON_R\n", (int) a);
+ i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
+ }
+ break;
+ case ISDN_CMD_HANGUP:
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ if (c->arg < ICN_BCH) {
+ a = c->arg + 1;
+ sprintf(cbuf, "%02d;BDIS_R\n%02d;DDIS_R\n", (int) a, (int) a);
+ i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
+ }
+ break;
+ case ISDN_CMD_SETEAZ:
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ if (card->leased)
+ break;
+ if (c->arg < ICN_BCH) {
+ a = c->arg + 1;
+ if (card->ptype == ISDN_PTYPE_EURO) {
+ sprintf(cbuf, "%02d;MS%s%s\n", (int) a,
+ c->parm.num[0] ? "N" : "ALL", c->parm.num);
+ } else
+ sprintf(cbuf, "%02d;EAZ%s\n", (int) a,
+ c->parm.num[0] ? (char *)(c->parm.num) : "0123456789");
+ i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
+ }
+ break;
+ case ISDN_CMD_CLREAZ:
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ if (card->leased)
+ break;
+ if (c->arg < ICN_BCH) {
+ a = c->arg + 1;
+ if (card->ptype == ISDN_PTYPE_EURO)
+ sprintf(cbuf, "%02d;MSNC\n", (int) a);
+ else
+ sprintf(cbuf, "%02d;EAZC\n", (int) a);
+ i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
+ }
+ break;
+ case ISDN_CMD_SETL2:
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ if ((c->arg & 255) < ICN_BCH) {
+ a = c->arg;
+ switch (a >> 8) {
+ case ISDN_PROTO_L2_X75I:
+ sprintf(cbuf, "%02d;BX75\n", (int) (a & 255) + 1);
+ break;
+ case ISDN_PROTO_L2_HDLC:
+ sprintf(cbuf, "%02d;BTRA\n", (int) (a & 255) + 1);
+ break;
+ default:
+ return -EINVAL;
+ }
+ i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
+ card->l2_proto[a & 255] = (a >> 8);
+ }
+ break;
+ case ISDN_CMD_SETL3:
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * Find card with given driverId
+ */
+static inline icn_card *
+icn_findcard(int driverid)
+{
+ icn_card *p = cards;
+
+ while (p) {
+ if (p->myid == driverid)
+ return p;
+ p = p->next;
+ }
+ return (icn_card *) 0;
+}
+
+/*
+ * Wrapper functions for interface to linklevel
+ */
+static int
+if_command(isdn_ctrl *c)
+{
+ icn_card *card = icn_findcard(c->driver);
+
+ if (card)
+ return (icn_command(c, card));
+ printk(KERN_ERR
+ "icn: if_command %d called with invalid driverId %d!\n",
+ c->command, c->driver);
+ return -ENODEV;
+}
+
+static int
+if_writecmd(const u_char __user *buf, int len, int id, int channel)
+{
+ icn_card *card = icn_findcard(id);
+
+ if (card) {
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ return (icn_writecmd(buf, len, 1, card));
+ }
+ printk(KERN_ERR
+ "icn: if_writecmd called with invalid driverId!\n");
+ return -ENODEV;
+}
+
+static int
+if_readstatus(u_char __user *buf, int len, int id, int channel)
+{
+ icn_card *card = icn_findcard(id);
+
+ if (card) {
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ return (icn_readstatus(buf, len, card));
+ }
+ printk(KERN_ERR
+ "icn: if_readstatus called with invalid driverId!\n");
+ return -ENODEV;
+}
+
+static int
+if_sendbuf(int id, int channel, int ack, struct sk_buff *skb)
+{
+ icn_card *card = icn_findcard(id);
+
+ if (card) {
+ if (!(card->flags & ICN_FLAGS_RUNNING))
+ return -ENODEV;
+ return (icn_sendbuf(channel, ack, skb, card));
+ }
+ printk(KERN_ERR
+ "icn: if_sendbuf called with invalid driverId!\n");
+ return -ENODEV;
+}
+
+/*
+ * Allocate a new card-struct, initialize it
+ * link it into cards-list and register it at linklevel.
+ */
+static icn_card *
+icn_initcard(int port, char *id)
+{
+ icn_card *card;
+ int i;
+
+ if (!(card = kzalloc(sizeof(icn_card), GFP_KERNEL))) {
+ printk(KERN_WARNING
+ "icn: (%s) Could not allocate card-struct.\n", id);
+ return (icn_card *) 0;
+ }
+ spin_lock_init(&card->lock);
+ card->port = port;
+ card->interface.owner = THIS_MODULE;
+ card->interface.hl_hdrlen = 1;
+ card->interface.channels = ICN_BCH;
+ card->interface.maxbufsize = 4000;
+ card->interface.command = if_command;
+ card->interface.writebuf_skb = if_sendbuf;
+ card->interface.writecmd = if_writecmd;
+ card->interface.readstat = if_readstatus;
+ card->interface.features = ISDN_FEATURE_L2_X75I |
+ ISDN_FEATURE_L2_HDLC |
+ ISDN_FEATURE_L3_TRANS |
+ ISDN_FEATURE_P_UNKNOWN;
+ card->ptype = ISDN_PTYPE_UNKNOWN;
+ strlcpy(card->interface.id, id, sizeof(card->interface.id));
+ card->msg_buf_write = card->msg_buf;
+ card->msg_buf_read = card->msg_buf;
+ card->msg_buf_end = &card->msg_buf[sizeof(card->msg_buf) - 1];
+ for (i = 0; i < ICN_BCH; i++) {
+ card->l2_proto[i] = ISDN_PROTO_L2_X75I;
+ skb_queue_head_init(&card->spqueue[i]);
+ }
+ card->next = cards;
+ cards = card;
+ if (!register_isdn(&card->interface)) {
+ cards = cards->next;
+ printk(KERN_WARNING
+ "icn: Unable to register %s\n", id);
+ kfree(card);
+ return (icn_card *) 0;
+ }
+ card->myid = card->interface.channels;
+ sprintf(card->regname, "icn-isdn (%s)", card->interface.id);
+ return card;
+}
+
+static int
+icn_addcard(int port, char *id1, char *id2)
+{
+ icn_card *card;
+ icn_card *card2;
+
+ if (!(card = icn_initcard(port, id1))) {
+ return -EIO;
+ }
+ if (!strlen(id2)) {
+ printk(KERN_INFO
+ "icn: (%s) ICN-2B, port 0x%x added\n",
+ card->interface.id, port);
+ return 0;
+ }
+ if (!(card2 = icn_initcard(port, id2))) {
+ printk(KERN_INFO
+ "icn: (%s) half ICN-4B, port 0x%x added\n", id2, port);
+ return 0;
+ }
+ card->doubleS0 = 1;
+ card->secondhalf = 0;
+ card->other = card2;
+ card2->doubleS0 = 1;
+ card2->secondhalf = 1;
+ card2->other = card;
+ printk(KERN_INFO
+ "icn: (%s and %s) ICN-4B, port 0x%x added\n",
+ card->interface.id, card2->interface.id, port);
+ return 0;
+}
+
+#ifndef MODULE
+static int __init
+icn_setup(char *line)
+{
+ char *p, *str;
+ int ints[3];
+ static char sid[20];
+ static char sid2[20];
+
+ str = get_options(line, 2, ints);
+ if (ints[0])
+ portbase = ints[1];
+ if (ints[0] > 1)
+ membase = (unsigned long)ints[2];
+ if (str && *str) {
+ strlcpy(sid, str, sizeof(sid));
+ icn_id = sid;
+ if ((p = strchr(sid, ','))) {
+ *p++ = 0;
+ strcpy(sid2, p);
+ icn_id2 = sid2;
+ }
+ }
+ return (1);
+}
+__setup("icn=", icn_setup);
+#endif /* MODULE */
+
+static int __init icn_init(void)
+{
+ char *p;
+ char rev[21];
+
+ memset(&dev, 0, sizeof(icn_dev));
+ dev.memaddr = (membase & 0x0ffc000);
+ dev.channel = -1;
+ dev.mcard = NULL;
+ dev.firstload = 1;
+ spin_lock_init(&dev.devlock);
+
+ if ((p = strchr(revision, ':'))) {
+ strncpy(rev, p + 1, 20);
+ rev[20] = '\0';
+ p = strchr(rev, '$');
+ if (p)
+ *p = 0;
+ } else
+ strcpy(rev, " ??? ");
+ printk(KERN_NOTICE "ICN-ISDN-driver Rev%smem=0x%08lx\n", rev,
+ dev.memaddr);
+ return (icn_addcard(portbase, icn_id, icn_id2));
+}
+
+static void __exit icn_exit(void)
+{
+ isdn_ctrl cmd;
+ icn_card *card = cards;
+ icn_card *last, *tmpcard;
+ int i;
+ unsigned long flags;
+
+ icn_stopallcards();
+ while (card) {
+ cmd.command = ISDN_STAT_UNLOAD;
+ cmd.driver = card->myid;
+ card->interface.statcallb(&cmd);
+ spin_lock_irqsave(&card->lock, flags);
+ if (card->rvalid) {
+ OUTB_P(0, ICN_RUN); /* Reset Controller */
+ OUTB_P(0, ICN_MAPRAM); /* Disable RAM */
+ if (card->secondhalf || (!card->doubleS0)) {
+ release_region(card->port, ICN_PORTLEN);
+ card->rvalid = 0;
+ }
+ for (i = 0; i < ICN_BCH; i++)
+ icn_free_queue(card, i);
+ }
+ tmpcard = card->next;
+ spin_unlock_irqrestore(&card->lock, flags);
+ card = tmpcard;
+ }
+ card = cards;
+ cards = NULL;
+ while (card) {
+ last = card;
+ card = card->next;
+ kfree(last);
+ }
+ if (dev.mvalid) {
+ iounmap(dev.shmem);
+ release_mem_region(dev.memaddr, 0x4000);
+ }
+ printk(KERN_NOTICE "ICN-ISDN-driver unloaded\n");
+}
+
+module_init(icn_init);
+module_exit(icn_exit);
Code Review / kvmfornfv.git / blobdiff