/*
* 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>.
*
{EV_TIMEOUT, 750,750, -1, 0, 0, {ACT_CONNTIMEOUT}},
+ /* B channel closed (general case) */
+ {EV_BC_CLOSED, -1, -1, -1, -1,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME
+
/* misc. */
{EV_PROTO_L2, -1, -1, -1, -1,-1, {ACT_PROTO_L2}}, //FIXME
{
int v = -1;
- IFNULLRETVAL(p, -1);
-
gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
while (*p >= '0' && *p <= '9')
int v = 0;
int c;
- IFNULLRETVAL(p, -1);
-
gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
if (!*p)
return v;
}
-static inline void new_index(atomic_t *index, int max)
-{
- if (atomic_read(index) == max) //FIXME race?
- atomic_set(index, 0);
- else
- atomic_inc(index);
-}
-
/* retrieve CID from parsed response
* returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
*/
int cid;
int rawstring;
- IFNULLRET(cs);
-
len = cs->cbytes;
if (!len) {
/* ignore additional LFs/CRs (M10x config mode or cx100) */
}
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;
abort = 1;
curarg = 0;
break;
}
- atomic_set(&cs->ev_tail, tail);
+ cs->ev_tail = tail;
spin_unlock_irqrestore(&cs->ev_lock, flags);
if (curarg != params)
static void disconnect(struct at_state_t **at_state_p)
{
unsigned long flags;
- struct bc_state *bcs;
- struct cardstate *cs;
-
- IFNULLRET(at_state_p);
- IFNULLRET(*at_state_p);
- bcs = (*at_state_p)->bcs;
- cs = (*at_state_p)->cs;
- IFNULLRET(cs);
+ struct bc_state *bcs = (*at_state_p)->bcs;
+ struct cardstate *cs = (*at_state_p)->cs;
- new_index(&(*at_state_p)->seq_index, MAX_SEQ_INDEX);
+ spin_lock_irqsave(&cs->lock, flags);
+ ++(*at_state_p)->seq_index;
/* revert to selected idle mode */
- if (!atomic_read(&cs->cidmode)) {
+ if (!cs->cidmode) {
cs->at_state.pending_commands |= PC_UMMODE;
atomic_set(&cs->commands_pending, 1); //FIXME
gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
}
+ spin_unlock_irqrestore(&cs->lock, flags);
if (bcs) {
/* B channel assigned: invoke hardware specific handler */
static void bchannel_down(struct bc_state *bcs)
{
- IFNULLRET(bcs);
- IFNULLRET(bcs->cs);
-
if (bcs->chstate & CHS_B_UP) {
bcs->chstate &= ~CHS_B_UP;
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
static void bchannel_up(struct bc_state *bcs)
{
- IFNULLRET(bcs);
-
if (!(bcs->chstate & CHS_D_UP)) {
dev_notice(bcs->cs->dev, "%s: D channel not up\n", __func__);
bcs->chstate |= CHS_D_UP;
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
}
-static void start_dial(struct at_state_t *at_state, void *data, int seq_index)
+static void start_dial(struct at_state_t *at_state, void *data, unsigned seq_index)
{
struct bc_state *bcs = at_state->bcs;
struct cardstate *cs = at_state->cs;
int retval;
+ unsigned long flags;
bcs->chstate |= CHS_NOTIFY_LL;
- //atomic_set(&bcs->status, BCS_INIT);
- if (atomic_read(&at_state->seq_index) != seq_index)
+ spin_lock_irqsave(&cs->lock, flags);
+ if (at_state->seq_index != seq_index) {
+ spin_unlock_irqrestore(&cs->lock, flags);
goto error;
+ }
+ spin_unlock_irqrestore(&cs->lock, flags);
retval = gigaset_isdn_setup_dial(at_state, data);
if (retval != 0)
if (atomic_read(&cs->mstate) != MS_LOCKED)
schedule_init(cs, MS_INIT);
+ cs->isdn_up = 1;
gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
// FIXME: not in locked mode
// FIXME 2: only after init sequence
atomic_set(&cs->mode, M_UNKNOWN);
}
+ /* Tell the LL that the device is not available .. */
+ if (cs->isdn_up) {
+ cs->isdn_up = 0;
+ gigaset_i4l_cmd(cs, ISDN_STAT_STOP);
+ }
+
/* The rest is done by cleanup_cs () in user mode. */
cs->cmd_result = -ENODEV;
static void do_stop(struct cardstate *cs)
{
+ unsigned long flags;
+
+ spin_lock_irqsave(&cs->lock, flags);
+ cs->connected = 0;
+ spin_unlock_irqrestore(&cs->lock, flags);
+
do_shutdown(cs);
}
atomic_set(&cs->mstate, MS_UNINITIALIZED);
atomic_set(&cs->mode, M_UNKNOWN);
gigaset_free_channels(cs);
- if (atomic_read(&cs->connected))
+ if (cs->connected)
schedule_init(cs, MS_INIT);
return 0;
cs->at_state.pending_commands &= ~PC_INIT;
cs->cur_at_seq = SEQ_NONE;
atomic_set(&cs->mode, M_UNIMODEM);
- if (!atomic_read(&cs->cidmode)) {
+ spin_lock_irqsave(&cs->lock, flags);
+ if (!cs->cidmode) {
+ spin_unlock_irqrestore(&cs->lock, flags);
gigaset_free_channels(cs);
atomic_set(&cs->mstate, MS_READY);
break;
}
+ spin_unlock_irqrestore(&cs->lock, flags);
cs->at_state.pending_commands |= PC_CIDMODE;
atomic_set(&cs->commands_pending, 1);
gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
/* events from the proc file system */ // FIXME without ACT_xxxx?
case ACT_PROC_CIDMODE:
- if (ev->parameter != atomic_read(&cs->cidmode)) {
- atomic_set(&cs->cidmode, ev->parameter);
+ spin_lock_irqsave(&cs->lock, flags);
+ if (ev->parameter != cs->cidmode) {
+ cs->cidmode = ev->parameter;
if (ev->parameter) {
cs->at_state.pending_commands |= PC_CIDMODE;
gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
}
atomic_set(&cs->commands_pending, 1);
}
+ spin_unlock_irqrestore(&cs->lock, flags);
cs->waiting = 0;
wake_up(&cs->waitqueue);
break;
int curact;
unsigned long flags;
- IFNULLRET(cs);
- IFNULLRET(ev);
-
if (ev->cid >= 0) {
at_state = at_state_from_cid(cs, ev->cid);
if (!at_state) {
/* Setting the pointer to the dial array */
rep = at_state->replystruct;
- IFNULLRET(rep);
+ spin_lock_irqsave(&cs->lock, flags);
if (ev->type == EV_TIMEOUT) {
- if (ev->parameter != atomic_read(&at_state->timer_index)
+ if (ev->parameter != at_state->timer_index
|| !at_state->timer_active) {
ev->type = RSP_NONE; /* old timeout */
gig_dbg(DEBUG_ANY, "old timeout");
else
gig_dbg(DEBUG_ANY, "stopped waiting");
}
+ spin_unlock_irqrestore(&cs->lock, flags);
/* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
or at_state->str_var[STR_XXXX], set it */
} else {
/* Send command to modem if not NULL... */
if (p_command/*rep->command*/) {
- if (atomic_read(&cs->connected))
+ if (cs->connected)
send_command(cs, p_command,
sendcid, cs->dle,
GFP_ATOMIC);
} else if (rep->timeout > 0) { /* new timeout */
at_state->timer_expires = rep->timeout * 10;
at_state->timer_active = 1;
- new_index(&at_state->timer_index,
- MAX_TIMER_INDEX);
+ ++at_state->timer_index;
}
spin_unlock_irqrestore(&cs->lock, flags);
}
struct bc_state *bcs;
int i;
int sequence;
-
- IFNULLRET(cs);
+ unsigned long flags;
atomic_set(&cs->commands_pending, 0);
}
/* only switch back to unimodem mode, if no commands are pending and no channels are up */
+ spin_lock_irqsave(&cs->lock, flags);
if (cs->at_state.pending_commands == PC_UMMODE
- && !atomic_read(&cs->cidmode)
+ && !cs->cidmode
&& list_empty(&cs->temp_at_states)
&& atomic_read(&cs->mode) == M_CID) {
sequence = SEQ_UMMODE;
}
}
}
+ spin_unlock_irqrestore(&cs->lock, flags);
cs->at_state.pending_commands &= ~PC_UMMODE;
if (sequence != SEQ_NONE) {
schedule_sequence(cs, at_state, sequence);
int i;
int check_flags = 0;
int was_busy;
+ unsigned long flags;
- /* no locking needed (only one reader) */
- head = atomic_read(&cs->ev_head);
+ spin_lock_irqsave(&cs->ev_lock, flags);
+ head = cs->ev_head;
for (i = 0; i < 2 * MAX_EVENTS; ++i) {
- tail = atomic_read(&cs->ev_tail);
+ tail = cs->ev_tail;
if (tail == head) {
if (!check_flags && !atomic_read(&cs->commands_pending))
break;
check_flags = 0;
+ spin_unlock_irqrestore(&cs->ev_lock, flags);
process_command_flags(cs);
- tail = atomic_read(&cs->ev_tail);
+ spin_lock_irqsave(&cs->ev_lock, flags);
+ tail = cs->ev_tail;
if (tail == head) {
if (!atomic_read(&cs->commands_pending))
break;
ev = cs->events + head;
was_busy = cs->cur_at_seq != SEQ_NONE;
+ spin_unlock_irqrestore(&cs->ev_lock, flags);
process_event(cs, ev);
+ spin_lock_irqsave(&cs->ev_lock, flags);
kfree(ev->ptr);
ev->ptr = NULL;
if (was_busy && cs->cur_at_seq == SEQ_NONE)
check_flags = 1;
head = (head + 1) % MAX_EVENTS;
- atomic_set(&cs->ev_head, head);
+ cs->ev_head = head;
}
+ spin_unlock_irqrestore(&cs->ev_lock, flags);
+
if (i == 2 * MAX_EVENTS) {
dev_err(cs->dev,
"infinite loop in process_events; aborting.\n");
{
struct cardstate *cs = (struct cardstate *) data;
- IFNULLRET(cs);
- IFNULLRET(cs->inbuf);
-
/* handle incoming data on control/common channel */
if (atomic_read(&cs->inbuf->head) != atomic_read(&cs->inbuf->tail)) {
gig_dbg(DEBUG_INTR, "processing new data");