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linux/drivers/isdn/icn/icn.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

1694 lines
42 KiB
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/* $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[60];
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 dial[50];
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");
strcpy(dial, p);
sprintf(cbuf, "%02d;D%s_R%s,%02d,%02d,%s\n", (int) (a + 1),
dcode, dial, 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",
card2->interface.id, 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) {
strcpy(sid, str);
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[10];
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, ':'))) {
strcpy(rev, p + 1);
p = strchr(rev, '$');
*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);
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