/*
* Stuff used by all variants of the driver
*
- * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>,
+ * Copyright (c) 2001 by Stefan Eilers,
* Hansjoerg Lipp <hjlipp@web.de>,
* Tilman Schmidt <tilman@imap.cc>.
*
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* =====================================================================
- * ToDo: ...
- * =====================================================================
- * Version: $Id: common.c,v 1.104.4.22 2006/02/04 18:28:16 hjlipp Exp $
- * =====================================================================
*/
#include "gigaset.h"
#include <linux/moduleparam.h>
/* Version Information */
-#define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Tilman Schmidt <tilman@imap.cc>, Stefan Eilers <Eilers.Stefan@epost.de>"
+#define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Tilman Schmidt <tilman@imap.cc>, Stefan Eilers"
#define DRIVER_DESC "Driver for Gigaset 307x"
/* Module parameters */
module_param_named(debug, gigaset_debuglevel, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(debug, "debug level");
-/*======================================================================
- Prototypes of internal functions
- */
-
-//static void gigaset_process_response(int resp_code, int parameter,
-// struct at_state_t *at_state,
-// unsigned char ** pstring);
-static struct cardstate *alloc_cs(struct gigaset_driver *drv);
-static void free_cs(struct cardstate *cs);
-static void make_valid(struct cardstate *cs, unsigned mask);
-static void make_invalid(struct cardstate *cs, unsigned mask);
-
-#define VALID_MINOR 0x01
-#define VALID_ID 0x02
-#define ASSIGNED 0x04
-
-/* bitwise byte inversion table */
-__u8 gigaset_invtab[256] = {
- 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
- 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
- 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
- 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
- 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
- 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
- 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
- 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
- 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
- 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
- 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
- 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
- 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
- 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
- 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
- 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
- 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
- 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
- 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
- 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
- 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
- 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
- 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
- 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
- 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
- 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
- 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
- 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
- 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
- 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
- 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
- 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
-};
-EXPORT_SYMBOL_GPL(gigaset_invtab);
+/* driver state flags */
+#define VALID_MINOR 0x01
+#define VALID_ID 0x02
+#define ASSIGNED 0x04
void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg,
- size_t len, const unsigned char *buf, int from_user)
+ size_t len, const unsigned char *buf)
{
unsigned char outbuf[80];
- unsigned char inbuf[80 - 1];
- size_t numin;
- const unsigned char *in;
+ unsigned char c;
size_t space = sizeof outbuf - 1;
unsigned char *out = outbuf;
+ size_t numin = len;
- if (!from_user) {
- in = buf;
- numin = len;
- } else {
- numin = len < sizeof inbuf ? len : sizeof inbuf;
- in = inbuf;
- if (copy_from_user(inbuf, (const unsigned char __user *) buf, numin)) {
- strncpy(inbuf, "<FAULT>", sizeof inbuf);
- numin = sizeof "<FAULT>" - 1;
+ while (numin--) {
+ c = *buf++;
+ if (c == '~' || c == '^' || c == '\\') {
+ if (!space--)
+ break;
+ *out++ = '\\';
}
- }
-
- for (; numin && space; --numin, ++in) {
- --space;
- if (*in >= 32)
- *out++ = *in;
- else {
+ if (c & 0x80) {
+ if (!space--)
+ break;
+ *out++ = '~';
+ c ^= 0x80;
+ }
+ if (c < 0x20 || c == 0x7f) {
+ if (!space--)
+ break;
*out++ = '^';
- if (space) {
- *out++ = '@' + *in;
- --space;
- }
+ c ^= 0x40;
}
+ if (!space--)
+ break;
+ *out++ = c;
}
*out = 0;
- dbg(level, "%s (%u bytes): %s", msg, (unsigned) len, outbuf);
+ gig_dbg(level, "%s (%u bytes): %s", msg, (unsigned) len, outbuf);
}
EXPORT_SYMBOL_GPL(gigaset_dbg_buffer);
{
int i, r;
- if (!atomic_read(&cs->connected)) {
- err("not connected!");
- return -1;
- }
-
cs->control_state = TIOCM_RTS; //FIXME
r = setflags(cs, TIOCM_DTR, 200);
return 0;
error:
- err("error %d on setuartbits!\n", -r);
+ dev_err(cs->dev, "error %d on setuartbits\n", -r);
cs->control_state = TIOCM_RTS|TIOCM_DTR; // FIXME is this a good value?
cs->ops->set_modem_ctrl(cs, 0, TIOCM_RTS|TIOCM_DTR);
return 0;
if (--at_state->timer_expires) {
- dbg(DEBUG_MCMD, "decreased timer of %p to %lu",
- at_state, at_state->timer_expires);
+ gig_dbg(DEBUG_MCMD, "decreased timer of %p to %lu",
+ at_state, at_state->timer_expires);
return 0;
}
if (!gigaset_add_event(at_state->cs, at_state, EV_TIMEOUT, NULL,
- atomic_read(&at_state->timer_index), NULL)) {
+ at_state->timer_index, NULL)) {
//FIXME what should we do?
}
if (test_timeout(at_state))
timeout = 1;
- if (atomic_read(&cs->running)) {
- mod_timer(&cs->timer, jiffies + GIG_TICK);
+ if (cs->running) {
+ mod_timer(&cs->timer, jiffies + msecs_to_jiffies(GIG_TICK));
if (timeout) {
- dbg(DEBUG_CMD, "scheduling timeout");
+ gig_dbg(DEBUG_CMD, "scheduling timeout");
tasklet_schedule(&cs->event_tasklet);
}
}
spin_lock_irqsave(&bcs->cs->lock, flags);
if (bcs->use_count) {
- dbg(DEBUG_ANY, "could not allocate channel %d", bcs->channel);
+ gig_dbg(DEBUG_ANY, "could not allocate channel %d",
+ bcs->channel);
spin_unlock_irqrestore(&bcs->cs->lock, flags);
return 0;
}
++bcs->use_count;
bcs->busy = 1;
- dbg(DEBUG_ANY, "allocated channel %d", bcs->channel);
+ gig_dbg(DEBUG_ANY, "allocated channel %d", bcs->channel);
spin_unlock_irqrestore(&bcs->cs->lock, flags);
return 1;
}
spin_lock_irqsave(&bcs->cs->lock, flags);
if (!bcs->busy) {
- dbg(DEBUG_ANY, "could not free channel %d", bcs->channel);
+ gig_dbg(DEBUG_ANY, "could not free channel %d", bcs->channel);
spin_unlock_irqrestore(&bcs->cs->lock, flags);
return;
}
--bcs->use_count;
bcs->busy = 0;
- dbg(DEBUG_ANY, "freed channel %d", bcs->channel);
+ gig_dbg(DEBUG_ANY, "freed channel %d", bcs->channel);
spin_unlock_irqrestore(&bcs->cs->lock, flags);
}
for (i = 0; i < cs->channels; ++i)
if (cs->bcs[i].use_count) {
spin_unlock_irqrestore(&cs->lock, flags);
- dbg(DEBUG_ANY, "could not allocated all channels");
+ gig_dbg(DEBUG_ANY, "could not allocate all channels");
return 0;
}
for (i = 0; i < cs->channels; ++i)
++cs->bcs[i].use_count;
spin_unlock_irqrestore(&cs->lock, flags);
- dbg(DEBUG_ANY, "allocated all channels");
+ gig_dbg(DEBUG_ANY, "allocated all channels");
return 1;
}
unsigned long flags;
int i;
- dbg(DEBUG_ANY, "unblocking all channels");
+ gig_dbg(DEBUG_ANY, "unblocking all channels");
spin_lock_irqsave(&cs->lock, flags);
for (i = 0; i < cs->channels; ++i)
--cs->bcs[i].use_count;
unsigned long flags;
int i;
- dbg(DEBUG_ANY, "blocking all channels");
+ gig_dbg(DEBUG_ANY, "blocking all channels");
spin_lock_irqsave(&cs->lock, flags);
for (i = 0; i < cs->channels; ++i)
++cs->bcs[i].use_count;
{
struct event_t *ev;
unsigned head, tail;
+ unsigned long flags;
- /* no locking needed (no reader/writer allowed) */
+ spin_lock_irqsave(&cs->ev_lock, flags);
- head = atomic_read(&cs->ev_head);
- tail = atomic_read(&cs->ev_tail);
+ head = cs->ev_head;
+ tail = cs->ev_tail;
while (tail != head) {
ev = cs->events + head;
kfree(ev->ptr);
-
head = (head + 1) % MAX_EVENTS;
}
- atomic_set(&cs->ev_head, tail);
+ cs->ev_head = tail;
+
+ spin_unlock_irqrestore(&cs->ev_lock, flags);
}
struct event_t *gigaset_add_event(struct cardstate *cs,
- struct at_state_t *at_state, int type,
- void *ptr, int parameter, void *arg)
+ struct at_state_t *at_state, int type,
+ void *ptr, int parameter, void *arg)
{
unsigned long flags;
unsigned next, tail;
spin_lock_irqsave(&cs->ev_lock, flags);
- tail = atomic_read(&cs->ev_tail);
+ tail = cs->ev_tail;
next = (tail + 1) % MAX_EVENTS;
- if (unlikely(next == atomic_read(&cs->ev_head)))
+ if (unlikely(next == cs->ev_head))
err("event queue full");
else {
event = cs->events + tail;
event->ptr = ptr;
event->arg = arg;
event->parameter = parameter;
- atomic_set(&cs->ev_tail, next);
+ cs->ev_tail = next;
}
spin_unlock_irqrestore(&cs->ev_lock, flags);
{
int i;
- dbg(DEBUG_INIT, "freeing bcs[%d]->hw", bcs->channel);
+ gig_dbg(DEBUG_INIT, "freeing bcs[%d]->hw", bcs->channel);
if (!bcs->cs->ops->freebcshw(bcs)) {
- dbg(DEBUG_INIT, "failed");
+ gig_dbg(DEBUG_INIT, "failed");
}
- dbg(DEBUG_INIT, "clearing bcs[%d]->at_state", bcs->channel);
+ gig_dbg(DEBUG_INIT, "clearing bcs[%d]->at_state", bcs->channel);
clear_at_state(&bcs->at_state);
- dbg(DEBUG_INIT, "freeing bcs[%d]->skb", bcs->channel);
+ gig_dbg(DEBUG_INIT, "freeing bcs[%d]->skb", bcs->channel);
if (bcs->skb)
dev_kfree_skb(bcs->skb);
}
}
+static struct cardstate *alloc_cs(struct gigaset_driver *drv)
+{
+ unsigned long flags;
+ unsigned i;
+ static struct cardstate *ret = NULL;
+
+ spin_lock_irqsave(&drv->lock, flags);
+ for (i = 0; i < drv->minors; ++i) {
+ if (!(drv->flags[i] & VALID_MINOR)) {
+ drv->flags[i] = VALID_MINOR;
+ ret = drv->cs + i;
+ }
+ if (ret)
+ break;
+ }
+ spin_unlock_irqrestore(&drv->lock, flags);
+ return ret;
+}
+
+static void free_cs(struct cardstate *cs)
+{
+ unsigned long flags;
+ struct gigaset_driver *drv = cs->driver;
+ spin_lock_irqsave(&drv->lock, flags);
+ drv->flags[cs->minor_index] = 0;
+ spin_unlock_irqrestore(&drv->lock, flags);
+}
+
+static void make_valid(struct cardstate *cs, unsigned mask)
+{
+ unsigned long flags;
+ struct gigaset_driver *drv = cs->driver;
+ spin_lock_irqsave(&drv->lock, flags);
+ drv->flags[cs->minor_index] |= mask;
+ spin_unlock_irqrestore(&drv->lock, flags);
+}
+
+static void make_invalid(struct cardstate *cs, unsigned mask)
+{
+ unsigned long flags;
+ struct gigaset_driver *drv = cs->driver;
+ spin_lock_irqsave(&drv->lock, flags);
+ drv->flags[cs->minor_index] &= ~mask;
+ spin_unlock_irqrestore(&drv->lock, flags);
+}
+
void gigaset_freecs(struct cardstate *cs)
{
int i;
if (!cs)
return;
- down(&cs->sem);
+ mutex_lock(&cs->mutex);
if (!cs->bcs)
goto f_cs;
goto f_bcs;
spin_lock_irqsave(&cs->lock, flags);
- atomic_set(&cs->running, 0);
- spin_unlock_irqrestore(&cs->lock, flags); /* event handler and timer are not rescheduled below */
+ cs->running = 0;
+ spin_unlock_irqrestore(&cs->lock, flags); /* event handler and timer are
+ not rescheduled below */
tasklet_kill(&cs->event_tasklet);
del_timer_sync(&cs->timer);
switch (cs->cs_init) {
default:
+ /* clear device sysfs */
+ gigaset_free_dev_sysfs(cs);
+
gigaset_if_free(cs);
- dbg(DEBUG_INIT, "clearing hw");
+ gig_dbg(DEBUG_INIT, "clearing hw");
cs->ops->freecshw(cs);
//FIXME cmdbuf
case 2: /* error in initcshw */
/* Deregister from LL */
make_invalid(cs, VALID_ID);
- dbg(DEBUG_INIT, "clearing iif");
+ gig_dbg(DEBUG_INIT, "clearing iif");
gigaset_i4l_cmd(cs, ISDN_STAT_UNLOAD);
/* fall through */
case 1: /* error when regestering to LL */
- dbg(DEBUG_INIT, "clearing at_state");
+ gig_dbg(DEBUG_INIT, "clearing at_state");
clear_at_state(&cs->at_state);
dealloc_at_states(cs);
/* fall through */
case 0: /* error in one call to initbcs */
for (i = 0; i < cs->channels; ++i) {
- dbg(DEBUG_INIT, "clearing bcs[%d]", i);
+ gig_dbg(DEBUG_INIT, "clearing bcs[%d]", i);
gigaset_freebcs(cs->bcs + i);
}
clear_events(cs);
- dbg(DEBUG_INIT, "freeing inbuf");
+ gig_dbg(DEBUG_INIT, "freeing inbuf");
kfree(cs->inbuf);
}
-f_bcs: dbg(DEBUG_INIT, "freeing bcs[]");
+f_bcs: gig_dbg(DEBUG_INIT, "freeing bcs[]");
kfree(cs->bcs);
-f_cs: dbg(DEBUG_INIT, "freeing cs");
- up(&cs->sem);
+f_cs: gig_dbg(DEBUG_INIT, "freeing cs");
+ mutex_unlock(&cs->mutex);
free_cs(cs);
}
EXPORT_SYMBOL_GPL(gigaset_freecs);
void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs,
- struct cardstate *cs, int cid)
+ struct cardstate *cs, int cid)
{
int i;
at_state->pending_commands = 0;
at_state->timer_expires = 0;
at_state->timer_active = 0;
- atomic_set(&at_state->timer_index, 0);
- atomic_set(&at_state->seq_index, 0);
+ at_state->timer_index = 0;
+ at_state->seq_index = 0;
at_state->ConState = 0;
for (i = 0; i < STR_NUM; ++i)
at_state->str_var[i] = NULL;
static void gigaset_inbuf_init(struct inbuf_t *inbuf, struct bc_state *bcs,
- struct cardstate *cs, int inputstate)
+ struct cardstate *cs, int inputstate)
/* inbuf->read must be allocated before! */
{
atomic_set(&inbuf->head, 0);
inbuf->inputstate = inputstate;
}
+/* append received bytes to inbuf */
+int gigaset_fill_inbuf(struct inbuf_t *inbuf, const unsigned char *src,
+ unsigned numbytes)
+{
+ unsigned n, head, tail, bytesleft;
+
+ gig_dbg(DEBUG_INTR, "received %u bytes", numbytes);
+
+ if (!numbytes)
+ return 0;
+
+ bytesleft = numbytes;
+ tail = atomic_read(&inbuf->tail);
+ head = atomic_read(&inbuf->head);
+ gig_dbg(DEBUG_INTR, "buffer state: %u -> %u", head, tail);
+
+ while (bytesleft) {
+ if (head > tail)
+ n = head - 1 - tail;
+ else if (head == 0)
+ n = (RBUFSIZE-1) - tail;
+ else
+ n = RBUFSIZE - tail;
+ if (!n) {
+ dev_err(inbuf->cs->dev,
+ "buffer overflow (%u bytes lost)", bytesleft);
+ break;
+ }
+ if (n > bytesleft)
+ n = bytesleft;
+ memcpy(inbuf->data + tail, src, n);
+ bytesleft -= n;
+ tail = (tail + n) % RBUFSIZE;
+ src += n;
+ }
+ gig_dbg(DEBUG_INTR, "setting tail to %u", tail);
+ atomic_set(&inbuf->tail, tail);
+ return numbytes != bytesleft;
+}
+EXPORT_SYMBOL_GPL(gigaset_fill_inbuf);
+
/* Initialize the b-channel structure */
static struct bc_state *gigaset_initbcs(struct bc_state *bcs,
- struct cardstate *cs, int channel)
+ struct cardstate *cs, int channel)
{
int i;
bcs->trans_down = 0;
bcs->trans_up = 0;
- dbg(DEBUG_INIT, "setting up bcs[%d]->at_state", channel);
+ gig_dbg(DEBUG_INIT, "setting up bcs[%d]->at_state", channel);
gigaset_at_init(&bcs->at_state, bcs, cs, -1);
bcs->rcvbytes = 0;
bcs->emptycount = 0;
#endif
- dbg(DEBUG_INIT, "allocating bcs[%d]->skb", channel);
+ gig_dbg(DEBUG_INIT, "allocating bcs[%d]->skb", channel);
bcs->fcs = PPP_INITFCS;
bcs->inputstate = 0;
if (cs->ignoreframes) {
} else if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)
skb_reserve(bcs->skb, HW_HDR_LEN);
else {
- warn("could not allocate skb");
+ warn("could not allocate skb\n");
bcs->inputstate |= INS_skip_frame;
}
for (i = 0; i < AT_NUM; ++i)
bcs->commands[i] = NULL;
- dbg(DEBUG_INIT, " setting up bcs[%d]->hw", channel);
+ gig_dbg(DEBUG_INIT, " setting up bcs[%d]->hw", channel);
if (cs->ops->initbcshw(bcs))
return bcs;
-//error:
- dbg(DEBUG_INIT, " failed");
+ gig_dbg(DEBUG_INIT, " failed");
- dbg(DEBUG_INIT, " freeing bcs[%d]->skb", channel);
+ gig_dbg(DEBUG_INIT, " freeing bcs[%d]->skb", channel);
if (bcs->skb)
dev_kfree_skb(bcs->skb);
* Calls hardware dependent gigaset_initcshw() function
* Calls B channel initialization function gigaset_initbcs() for each B channel
* parameters:
- * drv hardware driver the device belongs to
+ * drv hardware driver the device belongs to
* channels number of B channels supported by device
- * onechannel !=0: B channel data and AT commands share one communication channel
+ * onechannel !=0: B channel data and AT commands share one
+ * communication channel
* ==0: B channels have separate communication channels
* ignoreframes number of frames to ignore after setting up B channel
* cidmode !=0: start in CallID mode
int cidmode, const char *modulename)
{
struct cardstate *cs = NULL;
+ unsigned long flags;
int i;
- dbg(DEBUG_INIT, "allocating cs");
+ gig_dbg(DEBUG_INIT, "allocating cs");
cs = alloc_cs(drv);
if (!cs)
goto error;
- dbg(DEBUG_INIT, "allocating bcs[0..%d]", channels - 1);
+ gig_dbg(DEBUG_INIT, "allocating bcs[0..%d]", channels - 1);
cs->bcs = kmalloc(channels * sizeof(struct bc_state), GFP_KERNEL);
if (!cs->bcs)
goto error;
- dbg(DEBUG_INIT, "allocating inbuf");
+ gig_dbg(DEBUG_INIT, "allocating inbuf");
cs->inbuf = kmalloc(sizeof(struct inbuf_t), GFP_KERNEL);
if (!cs->inbuf)
goto error;
cs->onechannel = onechannel;
cs->ignoreframes = ignoreframes;
INIT_LIST_HEAD(&cs->temp_at_states);
- atomic_set(&cs->running, 0);
+ cs->running = 0;
init_timer(&cs->timer); /* clear next & prev */
spin_lock_init(&cs->ev_lock);
- atomic_set(&cs->ev_tail, 0);
- atomic_set(&cs->ev_head, 0);
- init_MUTEX_LOCKED(&cs->sem);
- tasklet_init(&cs->event_tasklet, &gigaset_handle_event, (unsigned long) cs);
+ cs->ev_tail = 0;
+ cs->ev_head = 0;
+ mutex_init(&cs->mutex);
+ mutex_lock(&cs->mutex);
+
+ tasklet_init(&cs->event_tasklet, &gigaset_handle_event,
+ (unsigned long) cs);
atomic_set(&cs->commands_pending, 0);
cs->cur_at_seq = 0;
cs->gotfwver = -1;
cs->open_count = 0;
+ cs->dev = NULL;
cs->tty = NULL;
- atomic_set(&cs->cidmode, cidmode != 0);
+ cs->tty_dev = NULL;
+ cs->cidmode = cidmode != 0;
//if(onechannel) { //FIXME
cs->tabnocid = gigaset_tab_nocid_m10x;
atomic_set(&cs->mstate, MS_UNINITIALIZED);
for (i = 0; i < channels; ++i) {
- dbg(DEBUG_INIT, "setting up bcs[%d].read", i);
+ gig_dbg(DEBUG_INIT, "setting up bcs[%d].read", i);
if (!gigaset_initbcs(cs->bcs + i, cs, i))
goto error;
}
++cs->cs_init;
- dbg(DEBUG_INIT, "setting up at_state");
+ gig_dbg(DEBUG_INIT, "setting up at_state");
spin_lock_init(&cs->lock);
gigaset_at_init(&cs->at_state, NULL, cs, 0);
cs->dle = 0;
cs->cbytes = 0;
- dbg(DEBUG_INIT, "setting up inbuf");
+ gig_dbg(DEBUG_INIT, "setting up inbuf");
if (onechannel) { //FIXME distinction necessary?
gigaset_inbuf_init(cs->inbuf, cs->bcs, cs, INS_command);
} else
gigaset_inbuf_init(cs->inbuf, NULL, cs, INS_command);
- atomic_set(&cs->connected, 0);
+ cs->connected = 0;
+ cs->isdn_up = 0;
- dbg(DEBUG_INIT, "setting up cmdbuf");
+ gig_dbg(DEBUG_INIT, "setting up cmdbuf");
cs->cmdbuf = cs->lastcmdbuf = NULL;
spin_lock_init(&cs->cmdlock);
cs->curlen = 0;
cs->cmdbytes = 0;
- /*
- * Tell the ISDN4Linux subsystem (the LL) that
- * a driver for a USB-Device is available !
- * If this is done, "isdnctrl" is able to bind a device for this driver even
- * if no physical usb-device is currently connected.
- * But this device will just be accessable if a physical USB device is connected
- * (via "gigaset_probe") .
- */
- dbg(DEBUG_INIT, "setting up iif");
+ gig_dbg(DEBUG_INIT, "setting up iif");
if (!gigaset_register_to_LL(cs, modulename)) {
- err("register_isdn=>error");
+ err("register_isdn failed");
goto error;
}
make_valid(cs, VALID_ID);
++cs->cs_init;
- dbg(DEBUG_INIT, "setting up hw");
+ gig_dbg(DEBUG_INIT, "setting up hw");
if (!cs->ops->initcshw(cs))
goto error;
gigaset_if_init(cs);
- atomic_set(&cs->running, 1);
- cs->timer.data = (unsigned long) cs;
- cs->timer.function = timer_tick;
- cs->timer.expires = jiffies + GIG_TICK;
+ /* set up device sysfs */
+ gigaset_init_dev_sysfs(cs);
+
+ spin_lock_irqsave(&cs->lock, flags);
+ cs->running = 1;
+ spin_unlock_irqrestore(&cs->lock, flags);
+ setup_timer(&cs->timer, timer_tick, (unsigned long) cs);
+ cs->timer.expires = jiffies + msecs_to_jiffies(GIG_TICK);
/* FIXME: can jiffies increase too much until the timer is added?
* Same problem(?) with mod_timer() in timer_tick(). */
add_timer(&cs->timer);
- dbg(DEBUG_INIT, "cs initialized!");
- up(&cs->sem);
+ gig_dbg(DEBUG_INIT, "cs initialized");
+ mutex_unlock(&cs->mutex);
return cs;
error: if (cs)
- up(&cs->sem);
- dbg(DEBUG_INIT, "failed");
+ mutex_unlock(&cs->mutex);
+ gig_dbg(DEBUG_INIT, "failed");
gigaset_freecs(cs);
return NULL;
}
EXPORT_SYMBOL_GPL(gigaset_initcs);
-/* ReInitialize the b-channel structure */ /* e.g. called on hangup, disconnect */
+/* ReInitialize the b-channel structure on hangup */
void gigaset_bcs_reinit(struct bc_state *bcs)
{
struct sk_buff *skb;
while ((skb = skb_dequeue(&bcs->squeue)) != NULL)
dev_kfree_skb(skb);
- spin_lock_irqsave(&cs->lock, flags); //FIXME
+ spin_lock_irqsave(&cs->lock, flags);
clear_at_state(&bcs->at_state);
bcs->at_state.ConState = 0;
bcs->at_state.timer_active = 0;
bcs->at_state.timer_expires = 0;
- bcs->at_state.cid = -1; /* No CID defined */
+ bcs->at_state.cid = -1; /* No CID defined */
spin_unlock_irqrestore(&cs->lock, flags);
bcs->inputstate = 0;
int gigaset_start(struct cardstate *cs)
{
- if (down_interruptible(&cs->sem))
+ unsigned long flags;
+
+ if (mutex_lock_interruptible(&cs->mutex))
return 0;
- //info("USB device for Gigaset 307x now attached to Dev %d", ucs->minor);
- atomic_set(&cs->connected, 1);
+ spin_lock_irqsave(&cs->lock, flags);
+ cs->connected = 1;
+ spin_unlock_irqrestore(&cs->lock, flags);
if (atomic_read(&cs->mstate) != MS_LOCKED) {
cs->ops->set_modem_ctrl(cs, 0, TIOCM_DTR|TIOCM_RTS);
goto error;
}
- dbg(DEBUG_CMD, "scheduling START");
+ gig_dbg(DEBUG_CMD, "scheduling START");
gigaset_schedule_event(cs);
wait_event(cs->waitqueue, !cs->waiting);
- up(&cs->sem);
+ mutex_unlock(&cs->mutex);
return 1;
error:
- up(&cs->sem);
+ mutex_unlock(&cs->mutex);
return 0;
}
EXPORT_SYMBOL_GPL(gigaset_start);
void gigaset_shutdown(struct cardstate *cs)
{
- down(&cs->sem);
+ mutex_lock(&cs->mutex);
cs->waiting = 1;
goto exit;
}
- dbg(DEBUG_CMD, "scheduling SHUTDOWN");
+ gig_dbg(DEBUG_CMD, "scheduling SHUTDOWN");
gigaset_schedule_event(cs);
if (wait_event_interruptible(cs->waitqueue, !cs->waiting)) {
- warn("aborted");
+ warn("%s: aborted", __func__);
//FIXME
}
cleanup_cs(cs);
exit:
- up(&cs->sem);
+ mutex_unlock(&cs->mutex);
}
EXPORT_SYMBOL_GPL(gigaset_shutdown);
void gigaset_stop(struct cardstate *cs)
{
- down(&cs->sem);
-
- atomic_set(&cs->connected, 0);
+ mutex_lock(&cs->mutex);
cs->waiting = 1;
goto exit;
}
- dbg(DEBUG_CMD, "scheduling STOP");
+ gig_dbg(DEBUG_CMD, "scheduling STOP");
gigaset_schedule_event(cs);
if (wait_event_interruptible(cs->waitqueue, !cs->waiting)) {
- warn("aborted");
+ warn("%s: aborted", __func__);
//FIXME
}
- /* Tell the LL that the device is not available .. */
- gigaset_i4l_cmd(cs, ISDN_STAT_STOP); // FIXME move to event layer?
-
cleanup_cs(cs);
exit:
- up(&cs->sem);
+ mutex_unlock(&cs->mutex);
}
EXPORT_SYMBOL_GPL(gigaset_stop);
static LIST_HEAD(drivers);
-static spinlock_t driver_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(driver_lock);
struct cardstate *gigaset_get_cs_by_id(int id)
{
spin_lock_irqsave(&driver_lock, flags);
list_for_each_entry(drv, &drivers, list) {
- dbg(DEBUG_DRIVER, "driver %p", drv);
+ gig_dbg(DEBUG_DRIVER, "driver %p", drv);
spin_lock(&drv->lock);
for (i = 0; i < drv->minors; ++i) {
- dbg(DEBUG_DRIVER, " index %u", i);
- dbg(DEBUG_DRIVER, " flags 0x%02x", drv->flags[i]);
+ gig_dbg(DEBUG_DRIVER, " index %u", i);
+ gig_dbg(DEBUG_DRIVER, " flags 0x%02x",
+ drv->flags[i]);
cs = drv->cs + i;
- dbg(DEBUG_DRIVER, " cardstate %p", cs);
- dbg(DEBUG_DRIVER, " minor_index %u", cs->minor_index);
- dbg(DEBUG_DRIVER, " driver %p", cs->driver);
- dbg(DEBUG_DRIVER, " i4l id %d", cs->myid);
+ gig_dbg(DEBUG_DRIVER, " cardstate %p", cs);
+ gig_dbg(DEBUG_DRIVER, " minor_index %u",
+ cs->minor_index);
+ gig_dbg(DEBUG_DRIVER, " driver %p", cs->driver);
+ gig_dbg(DEBUG_DRIVER, " i4l id %d", cs->myid);
}
spin_unlock(&drv->lock);
}
spin_unlock_irqrestore(&driver_lock, flags);
}
-EXPORT_SYMBOL_GPL(gigaset_debugdrivers);
-
-struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty)
-{
- if (tty->index < 0 || tty->index >= tty->driver->num)
- return NULL;
- return gigaset_get_cs_by_minor(tty->index + tty->driver->minor_start);
-}
-struct cardstate *gigaset_get_cs_by_minor(unsigned minor)
+static struct cardstate *gigaset_get_cs_by_minor(unsigned minor)
{
unsigned long flags;
static struct cardstate *ret = NULL;
return ret;
}
+struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty)
+{
+ if (tty->index < 0 || tty->index >= tty->driver->num)
+ return NULL;
+ return gigaset_get_cs_by_minor(tty->index + tty->driver->minor_start);
+}
+
void gigaset_freedriver(struct gigaset_driver *drv)
{
unsigned long flags;
/* gigaset_initdriver
* Allocate and initialize gigaset_driver structure. Initialize interface.
* parameters:
- * minor First minor number
- * minors Number of minors this driver can handle
- * procname Name of the driver (e.g. for /proc/tty/drivers, path in /proc/driver)
- * devname Name of the device files (prefix without minor number)
- * devfsname Devfs name of the device files without %d
+ * minor First minor number
+ * minors Number of minors this driver can handle
+ * procname Name of the driver
+ * devname Name of the device files (prefix without minor number)
* return value:
- * Pointer to the gigaset_driver structure on success, NULL on failure.
+ * Pointer to the gigaset_driver structure on success, NULL on failure.
*/
struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors,
- const char *procname,
- const char *devname,
- const char *devfsname,
- const struct gigaset_ops *ops,
- struct module *owner)
+ const char *procname,
+ const char *devname,
+ const struct gigaset_ops *ops,
+ struct module *owner)
{
struct gigaset_driver *drv;
unsigned long flags;
drv = kmalloc(sizeof *drv, GFP_KERNEL);
if (!drv)
return NULL;
+
if (!try_module_get(owner))
- return NULL;
+ goto out1;
drv->cs = NULL;
drv->have_tty = 0;
drv->cs = kmalloc(minors * sizeof *drv->cs, GFP_KERNEL);
if (!drv->cs)
- goto out1;
+ goto out2;
+
drv->flags = kmalloc(minors * sizeof *drv->flags, GFP_KERNEL);
if (!drv->flags)
- goto out2;
+ goto out3;
for (i = 0; i < minors; ++i) {
drv->flags[i] = 0;
drv->cs[i].minor_index = i;
}
- gigaset_if_initdriver(drv, procname, devname, devfsname);
+ gigaset_if_initdriver(drv, procname, devname);
spin_lock_irqsave(&driver_lock, flags);
list_add(&drv->list, &drivers);
return drv;
-out2:
+out3:
kfree(drv->cs);
+out2:
+ module_put(owner);
out1:
kfree(drv);
- module_put(owner);
return NULL;
}
EXPORT_SYMBOL_GPL(gigaset_initdriver);
-static struct cardstate *alloc_cs(struct gigaset_driver *drv)
-{
- unsigned long flags;
- unsigned i;
- static struct cardstate *ret = NULL;
-
- spin_lock_irqsave(&drv->lock, flags);
- for (i = 0; i < drv->minors; ++i) {
- if (!(drv->flags[i] & VALID_MINOR)) {
- drv->flags[i] = VALID_MINOR;
- ret = drv->cs + i;
- }
- if (ret)
- break;
- }
- spin_unlock_irqrestore(&drv->lock, flags);
- return ret;
-}
-
-static void free_cs(struct cardstate *cs)
-{
- unsigned long flags;
- struct gigaset_driver *drv = cs->driver;
- spin_lock_irqsave(&drv->lock, flags);
- drv->flags[cs->minor_index] = 0;
- spin_unlock_irqrestore(&drv->lock, flags);
-}
-
-static void make_valid(struct cardstate *cs, unsigned mask)
-{
- unsigned long flags;
- struct gigaset_driver *drv = cs->driver;
- spin_lock_irqsave(&drv->lock, flags);
- drv->flags[cs->minor_index] |= mask;
- spin_unlock_irqrestore(&drv->lock, flags);
-}
-
-static void make_invalid(struct cardstate *cs, unsigned mask)
-{
- unsigned long flags;
- struct gigaset_driver *drv = cs->driver;
- spin_lock_irqsave(&drv->lock, flags);
- drv->flags[cs->minor_index] &= ~mask;
- spin_unlock_irqrestore(&drv->lock, flags);
-}
-
/* For drivers without fixed assignment device<->cardstate (usb) */
struct cardstate *gigaset_getunassignedcs(struct gigaset_driver *drv)
{
git.openpandora.org / pandora-kernel.git / blobdiff