aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/isdn/gigaset/ev-layer.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/isdn/gigaset/ev-layer.c')
-rw-r--r--drivers/isdn/gigaset/ev-layer.c667
1 files changed, 333 insertions, 334 deletions
diff --git a/drivers/isdn/gigaset/ev-layer.c b/drivers/isdn/gigaset/ev-layer.c
index fdcb80bb21c7..1ba3424a286b 100644
--- a/drivers/isdn/gigaset/ev-layer.c
+++ b/drivers/isdn/gigaset/ev-layer.c
@@ -1,7 +1,7 @@
/*
* 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>.
*
@@ -11,82 +11,78 @@
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* =====================================================================
- * ToDo: ...
- * =====================================================================
- * Version: $Id: ev-layer.c,v 1.4.2.18 2006/02/04 18:28:16 hjlipp Exp $
- * =====================================================================
*/
#include "gigaset.h"
/* ========================================================== */
/* bit masks for pending commands */
-#define PC_INIT 0x004
-#define PC_DLE0 0x008
-#define PC_DLE1 0x010
-#define PC_CID 0x080
-#define PC_NOCID 0x100
-#define PC_HUP 0x002
-#define PC_DIAL 0x001
-#define PC_ACCEPT 0x040
-#define PC_SHUTDOWN 0x020
-#define PC_CIDMODE 0x200
-#define PC_UMMODE 0x400
+#define PC_DIAL 0x001
+#define PC_HUP 0x002
+#define PC_INIT 0x004
+#define PC_DLE0 0x008
+#define PC_DLE1 0x010
+#define PC_SHUTDOWN 0x020
+#define PC_ACCEPT 0x040
+#define PC_CID 0x080
+#define PC_NOCID 0x100
+#define PC_CIDMODE 0x200
+#define PC_UMMODE 0x400
/* types of modem responses */
-#define RT_NOTHING 0
-#define RT_ZSAU 1
-#define RT_RING 2
-#define RT_NUMBER 3
-#define RT_STRING 4
-#define RT_HEX 5
-#define RT_ZCAU 6
+#define RT_NOTHING 0
+#define RT_ZSAU 1
+#define RT_RING 2
+#define RT_NUMBER 3
+#define RT_STRING 4
+#define RT_HEX 5
+#define RT_ZCAU 6
/* Possible ASCII responses */
-#define RSP_OK 0
-//#define RSP_BUSY 1
-//#define RSP_CONNECT 2
-#define RSP_ZGCI 3
-#define RSP_RING 4
-#define RSP_ZAOC 5
-#define RSP_ZCSTR 6
-#define RSP_ZCFGT 7
-#define RSP_ZCFG 8
-#define RSP_ZCCR 9
-#define RSP_EMPTY 10
-#define RSP_ZLOG 11
-#define RSP_ZCAU 12
-#define RSP_ZMWI 13
-#define RSP_ZABINFO 14
-#define RSP_ZSMLSTCHG 15
-#define RSP_VAR 100
-#define RSP_ZSAU (RSP_VAR + VAR_ZSAU)
-#define RSP_ZDLE (RSP_VAR + VAR_ZDLE)
-#define RSP_ZVLS (RSP_VAR + VAR_ZVLS)
-#define RSP_ZCTP (RSP_VAR + VAR_ZCTP)
-#define RSP_STR (RSP_VAR + VAR_NUM)
-#define RSP_NMBR (RSP_STR + STR_NMBR)
-#define RSP_ZCPN (RSP_STR + STR_ZCPN)
-#define RSP_ZCON (RSP_STR + STR_ZCON)
-#define RSP_ZBC (RSP_STR + STR_ZBC)
-#define RSP_ZHLC (RSP_STR + STR_ZHLC)
-#define RSP_ERROR -1 /* ERROR */
-#define RSP_WRONG_CID -2 /* unknown cid in cmd */
-//#define RSP_EMPTY -3
-#define RSP_UNKNOWN -4 /* unknown response */
-#define RSP_FAIL -5 /* internal error */
-#define RSP_INVAL -6 /* invalid response */
-
-#define RSP_NONE -19
-#define RSP_STRING -20
-#define RSP_NULL -21
-//#define RSP_RETRYFAIL -22
-//#define RSP_RETRY -23
-//#define RSP_SKIP -24
-#define RSP_INIT -27
-#define RSP_ANY -26
-#define RSP_LAST -28
-#define RSP_NODEV -9
+#define RSP_OK 0
+//#define RSP_BUSY 1
+//#define RSP_CONNECT 2
+#define RSP_ZGCI 3
+#define RSP_RING 4
+#define RSP_ZAOC 5
+#define RSP_ZCSTR 6
+#define RSP_ZCFGT 7
+#define RSP_ZCFG 8
+#define RSP_ZCCR 9
+#define RSP_EMPTY 10
+#define RSP_ZLOG 11
+#define RSP_ZCAU 12
+#define RSP_ZMWI 13
+#define RSP_ZABINFO 14
+#define RSP_ZSMLSTCHG 15
+#define RSP_VAR 100
+#define RSP_ZSAU (RSP_VAR + VAR_ZSAU)
+#define RSP_ZDLE (RSP_VAR + VAR_ZDLE)
+#define RSP_ZVLS (RSP_VAR + VAR_ZVLS)
+#define RSP_ZCTP (RSP_VAR + VAR_ZCTP)
+#define RSP_STR (RSP_VAR + VAR_NUM)
+#define RSP_NMBR (RSP_STR + STR_NMBR)
+#define RSP_ZCPN (RSP_STR + STR_ZCPN)
+#define RSP_ZCON (RSP_STR + STR_ZCON)
+#define RSP_ZBC (RSP_STR + STR_ZBC)
+#define RSP_ZHLC (RSP_STR + STR_ZHLC)
+#define RSP_ERROR -1 /* ERROR */
+#define RSP_WRONG_CID -2 /* unknown cid in cmd */
+//#define RSP_EMPTY -3
+#define RSP_UNKNOWN -4 /* unknown response */
+#define RSP_FAIL -5 /* internal error */
+#define RSP_INVAL -6 /* invalid response */
+
+#define RSP_NONE -19
+#define RSP_STRING -20
+#define RSP_NULL -21
+//#define RSP_RETRYFAIL -22
+//#define RSP_RETRY -23
+//#define RSP_SKIP -24
+#define RSP_INIT -27
+#define RSP_ANY -26
+#define RSP_LAST -28
+#define RSP_NODEV -9
/* actions for process_response */
#define ACT_NOTHING 0
@@ -112,7 +108,7 @@
#define ACT_DISCONNECT 20
#define ACT_CONNECT 21
#define ACT_REMOTEREJECT 22
-#define ACT_CONNTIMEOUT 23
+#define ACT_CONNTIMEOUT 23
#define ACT_REMOTEHUP 24
#define ACT_ABORTHUP 25
#define ACT_ICALL 26
@@ -127,40 +123,40 @@
#define ACT_ERROR 35
#define ACT_ABORTCID 36
#define ACT_ZCAU 37
-#define ACT_NOTIFY_BC_DOWN 38
-#define ACT_NOTIFY_BC_UP 39
-#define ACT_DIAL 40
-#define ACT_ACCEPT 41
-#define ACT_PROTO_L2 42
-#define ACT_HUP 43
-#define ACT_IF_LOCK 44
-#define ACT_START 45
-#define ACT_STOP 46
-#define ACT_FAKEDLE0 47
-#define ACT_FAKEHUP 48
-#define ACT_FAKESDOWN 49
-#define ACT_SHUTDOWN 50
-#define ACT_PROC_CIDMODE 51
-#define ACT_UMODESET 52
-#define ACT_FAILUMODE 53
-#define ACT_CMODESET 54
-#define ACT_FAILCMODE 55
-#define ACT_IF_VER 56
+#define ACT_NOTIFY_BC_DOWN 38
+#define ACT_NOTIFY_BC_UP 39
+#define ACT_DIAL 40
+#define ACT_ACCEPT 41
+#define ACT_PROTO_L2 42
+#define ACT_HUP 43
+#define ACT_IF_LOCK 44
+#define ACT_START 45
+#define ACT_STOP 46
+#define ACT_FAKEDLE0 47
+#define ACT_FAKEHUP 48
+#define ACT_FAKESDOWN 49
+#define ACT_SHUTDOWN 50
+#define ACT_PROC_CIDMODE 51
+#define ACT_UMODESET 52
+#define ACT_FAILUMODE 53
+#define ACT_CMODESET 54
+#define ACT_FAILCMODE 55
+#define ACT_IF_VER 56
#define ACT_CMD 100
/* at command sequences */
-#define SEQ_NONE 0
-#define SEQ_INIT 100
-#define SEQ_DLE0 200
-#define SEQ_DLE1 250
-#define SEQ_CID 300
-#define SEQ_NOCID 350
-#define SEQ_HUP 400
-#define SEQ_DIAL 600
-#define SEQ_ACCEPT 720
-#define SEQ_SHUTDOWN 500
-#define SEQ_CIDMODE 10
-#define SEQ_UMMODE 11
+#define SEQ_NONE 0
+#define SEQ_INIT 100
+#define SEQ_DLE0 200
+#define SEQ_DLE1 250
+#define SEQ_CID 300
+#define SEQ_NOCID 350
+#define SEQ_HUP 400
+#define SEQ_DIAL 600
+#define SEQ_ACCEPT 720
+#define SEQ_SHUTDOWN 500
+#define SEQ_CIDMODE 10
+#define SEQ_UMMODE 11
// 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid), 400: hup, 500: reset, 600: dial, 700: ring
@@ -175,7 +171,7 @@ struct reply_t gigaset_tab_nocid_m10x[]= /* with dle mode */
// {ACT_TIMEOUT}},
{RSP_INIT, -1, -1,SEQ_INIT, 100, INIT_TIMEOUT,
- {ACT_TIMEOUT}}, /* wait until device is ready */
+ {ACT_TIMEOUT}}, /* wait until device is ready */
{EV_TIMEOUT, 100,100, -1, 101, 3, {0}, "Z\r"}, /* device in transparent mode? try to initialize it. */
{RSP_OK, 101,103, -1, 120, 5, {ACT_GETSTRING}, "+GMR\r"}, /* get version */
@@ -190,8 +186,8 @@ struct reply_t gigaset_tab_nocid_m10x[]= /* with dle mode */
{RSP_ERROR, 108,108, -1, 0, 0, {ACT_FAILINIT}},
{EV_TIMEOUT, 108,108, -1, 105, 2, {ACT_SETDLE0,
- ACT_HUPMODEM,
- ACT_TIMEOUT}}, /* still timeout => connection in unimodem mode? */
+ ACT_HUPMODEM,
+ ACT_TIMEOUT}}, /* still timeout => connection in unimodem mode? */
{EV_TIMEOUT, 105,105, -1, 103, 5, {0}, "Z\r"},
{RSP_ERROR, 102,102, -1, 107, 5, {0}, "^GETPRE\r"}, /* ERROR on ATZ => maybe in config mode? */
@@ -393,7 +389,7 @@ struct reply_t gigaset_tab_cid_m10x[] = /* for M10x */
#if 0
-static struct reply_t tab_nocid[]= /* no dle mode */ //FIXME aenderungen uebernehmen
+static struct reply_t tab_nocid[]= /* no dle mode */ //FIXME
{
/* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
@@ -401,7 +397,7 @@ static struct reply_t tab_nocid[]= /* no dle mode */ //FIXME aenderungen ueberne
{RSP_LAST,0,0,0,0,0,0}
};
-static struct reply_t tab_cid[] = /* no dle mode */ //FIXME aenderungen uebernehmen
+static struct reply_t tab_cid[] = /* no dle mode */ //FIXME
{
/* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
@@ -412,30 +408,30 @@ static struct reply_t tab_cid[] = /* no dle mode */ //FIXME aenderungen ueberneh
static struct resp_type_t resp_type[]=
{
- /*{"", RSP_EMPTY, RT_NOTHING},*/
- {"OK", RSP_OK, RT_NOTHING},
- {"ERROR", RSP_ERROR, RT_NOTHING},
- {"ZSAU", RSP_ZSAU, RT_ZSAU},
- {"ZCAU", RSP_ZCAU, RT_ZCAU},
- {"RING", RSP_RING, RT_RING},
- {"ZGCI", RSP_ZGCI, RT_NUMBER},
- {"ZVLS", RSP_ZVLS, RT_NUMBER},
- {"ZCTP", RSP_ZCTP, RT_NUMBER},
- {"ZDLE", RSP_ZDLE, RT_NUMBER},
- {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
- {"ZCCR", RSP_ZCCR, RT_NUMBER},
- {"ZMWI", RSP_ZMWI, RT_NUMBER},
- {"ZHLC", RSP_ZHLC, RT_STRING},
- {"ZBC", RSP_ZBC, RT_STRING},
- {"NMBR", RSP_NMBR, RT_STRING},
- {"ZCPN", RSP_ZCPN, RT_STRING},
- {"ZCON", RSP_ZCON, RT_STRING},
- {"ZAOC", RSP_ZAOC, RT_STRING},
- {"ZCSTR", RSP_ZCSTR, RT_STRING},
- {"ZCFG", RSP_ZCFG, RT_HEX},
- {"ZLOG", RSP_ZLOG, RT_NOTHING},
- {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
- {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
+ /*{"", RSP_EMPTY, RT_NOTHING},*/
+ {"OK", RSP_OK, RT_NOTHING},
+ {"ERROR", RSP_ERROR, RT_NOTHING},
+ {"ZSAU", RSP_ZSAU, RT_ZSAU},
+ {"ZCAU", RSP_ZCAU, RT_ZCAU},
+ {"RING", RSP_RING, RT_RING},
+ {"ZGCI", RSP_ZGCI, RT_NUMBER},
+ {"ZVLS", RSP_ZVLS, RT_NUMBER},
+ {"ZCTP", RSP_ZCTP, RT_NUMBER},
+ {"ZDLE", RSP_ZDLE, RT_NUMBER},
+ {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
+ {"ZCCR", RSP_ZCCR, RT_NUMBER},
+ {"ZMWI", RSP_ZMWI, RT_NUMBER},
+ {"ZHLC", RSP_ZHLC, RT_STRING},
+ {"ZBC", RSP_ZBC, RT_STRING},
+ {"NMBR", RSP_NMBR, RT_STRING},
+ {"ZCPN", RSP_ZCPN, RT_STRING},
+ {"ZCON", RSP_ZCON, RT_STRING},
+ {"ZAOC", RSP_ZAOC, RT_STRING},
+ {"ZCSTR", RSP_ZCSTR, RT_STRING},
+ {"ZCFG", RSP_ZCFG, RT_HEX},
+ {"ZLOG", RSP_ZLOG, RT_NOTHING},
+ {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
+ {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
{NULL,0,0}
};
@@ -446,9 +442,7 @@ static int isdn_getnum(char *p)
{
int v = -1;
- IFNULLRETVAL(p, -1);
-
- dbg(DEBUG_TRANSCMD, "string: %s", p);
+ gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
while (*p >= '0' && *p <= '9')
v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
@@ -465,9 +459,7 @@ static int isdn_gethex(char *p)
int v = 0;
int c;
- IFNULLRETVAL(p, -1);
-
- dbg(DEBUG_TRANSCMD, "string: %s", p);
+ gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
if (!*p)
return -1;
@@ -490,14 +482,6 @@ static int isdn_gethex(char *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
*/
@@ -536,16 +520,14 @@ void gigaset_handle_modem_response(struct cardstate *cs)
int cid;
int rawstring;
- IFNULLRET(cs);
-
len = cs->cbytes;
if (!len) {
/* ignore additional LFs/CRs (M10x config mode or cx100) */
- dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
+ gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
return;
}
cs->respdata[len] = 0;
- dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
+ gig_dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
argv[0] = cs->respdata;
params = 1;
if (cs->at_state.getstring) {
@@ -561,7 +543,8 @@ void gigaset_handle_modem_response(struct cardstate *cs)
case ',':
case '=':
if (params > MAX_REC_PARAMS) {
- warn("too many parameters in response");
+ dev_warn(cs->dev,
+ "too many parameters in response\n");
/* need last parameter (might be CID) */
params--;
}
@@ -572,33 +555,33 @@ void gigaset_handle_modem_response(struct cardstate *cs)
cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
if (cid < 0) {
gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
- NULL, 0, NULL);
+ NULL, 0, NULL);
return;
}
for (j = 1; j < params; ++j)
argv[j][-1] = 0;
- dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
+ gig_dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
if (cid) {
--params;
- dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
+ gig_dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
}
- dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
+ gig_dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
for (j = 1; j < params; j++)
- dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
+ gig_dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
}
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;
while (curarg < params) {
next = (tail + 1) % MAX_EVENTS;
if (unlikely(next == head)) {
- err("event queue full");
+ dev_err(cs->dev, "event queue full\n");
break;
}
@@ -619,8 +602,9 @@ void gigaset_handle_modem_response(struct cardstate *cs)
if (!rt->response) {
event->type = RSP_UNKNOWN;
- warn("unknown modem response: %s",
- argv[curarg]);
+ dev_warn(cs->dev,
+ "unknown modem response: %s\n",
+ argv[curarg]);
break;
}
@@ -636,7 +620,8 @@ void gigaset_handle_modem_response(struct cardstate *cs)
break;
case RT_RING:
if (!cid) {
- err("received RING without CID!");
+ dev_err(cs->dev,
+ "received RING without CID!\n");
event->type = RSP_INVAL;
abort = 1;
} else {
@@ -664,27 +649,25 @@ void gigaset_handle_modem_response(struct cardstate *cs)
event->parameter = ZSAU_DISCONNECT_REQ;
else {
event->parameter = ZSAU_UNKNOWN;
- warn("%s: unknown parameter %s after ZSAU",
- __func__, argv[curarg]);
+ dev_warn(cs->dev,
+ "%s: unknown parameter %s after ZSAU\n",
+ __func__, argv[curarg]);
}
++curarg;
break;
case RT_STRING:
if (curarg < params) {
- len = strlen(argv[curarg]) + 1;
- event->ptr = kmalloc(len, GFP_ATOMIC);
- if (event->ptr)
- memcpy(event->ptr, argv[curarg], len);
- else
- err("no memory for string!");
+ event->ptr = kstrdup(argv[curarg], GFP_ATOMIC);
+ if (!event->ptr)
+ dev_err(cs->dev, "out of memory\n");
++curarg;
}
#ifdef CONFIG_GIGASET_DEBUG
if (!event->ptr)
- dbg(DEBUG_CMD, "string==NULL");
+ gig_dbg(DEBUG_CMD, "string==NULL");
else
- dbg(DEBUG_CMD,
- "string==%s", (char *) event->ptr);
+ gig_dbg(DEBUG_CMD, "string==%s",
+ (char *) event->ptr);
#endif
break;
case RT_ZCAU:
@@ -694,7 +677,7 @@ void gigaset_handle_modem_response(struct cardstate *cs)
j = isdn_gethex(argv[curarg + 1]);
if (i >= 0 && i < 256 && j >= 0 && j < 256)
event->parameter = (unsigned) i << 8
- | j;
+ | j;
curarg += 2;
} else
curarg = params - 1;
@@ -712,7 +695,7 @@ void gigaset_handle_modem_response(struct cardstate *cs)
} else
event->parameter = -1;
#ifdef CONFIG_GIGASET_DEBUG
- dbg(DEBUG_CMD, "parameter==%d", event->parameter);
+ gig_dbg(DEBUG_CMD, "parameter==%d", event->parameter);
#endif
break;
}
@@ -724,12 +707,13 @@ void gigaset_handle_modem_response(struct cardstate *cs)
break;
}
- atomic_set(&cs->ev_tail, tail);
+ cs->ev_tail = tail;
spin_unlock_irqrestore(&cs->ev_lock, flags);
if (curarg != params)
- dbg(DEBUG_ANY, "invalid number of processed parameters: %d/%d",
- curarg, params);
+ gig_dbg(DEBUG_ANY,
+ "invalid number of processed parameters: %d/%d",
+ curarg, params);
}
EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
@@ -739,23 +723,19 @@ EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
static void disconnect(struct at_state_t **at_state_p)
{
unsigned long flags;
- struct bc_state *bcs;
- struct cardstate *cs;
+ struct bc_state *bcs = (*at_state_p)->bcs;
+ struct cardstate *cs = (*at_state_p)->cs;
- IFNULLRET(at_state_p);
- IFNULLRET(*at_state_p);
- bcs = (*at_state_p)->bcs;
- cs = (*at_state_p)->cs;
- IFNULLRET(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
- dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
+ gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
}
+ spin_unlock_irqrestore(&cs->lock, flags);
if (bcs) {
/* B channel assigned: invoke hardware specific handler */
@@ -777,7 +757,7 @@ static void disconnect(struct at_state_t **at_state_p)
* The structure should be freed by calling disconnect() after use.
*/
static inline struct at_state_t *get_free_channel(struct cardstate *cs,
- int cid)
+ int cid)
/* cids: >0: siemens-cid
0: without cid
-1: no cid assigned yet
@@ -826,7 +806,7 @@ static void init_failed(struct cardstate *cs, int mode)
static void schedule_init(struct cardstate *cs, int state)
{
if (cs->at_state.pending_commands & PC_INIT) {
- dbg(DEBUG_CMD, "not scheduling PC_INIT again");
+ gig_dbg(DEBUG_CMD, "not scheduling PC_INIT again");
return;
}
atomic_set(&cs->mstate, state);
@@ -834,52 +814,56 @@ static void schedule_init(struct cardstate *cs, int state)
gigaset_block_channels(cs);
cs->at_state.pending_commands |= PC_INIT;
atomic_set(&cs->commands_pending, 1);
- dbg(DEBUG_CMD, "Scheduling PC_INIT");
+ gig_dbg(DEBUG_CMD, "Scheduling PC_INIT");
}
-/* Add "AT" to a command, add the cid, dle encode it, send the result to the hardware. */
+/* Add "AT" to a command, add the cid, dle encode it, send the result to the
+ hardware. */
static void send_command(struct cardstate *cs, const char *cmd, int cid,
- int dle, gfp_t kmallocflags)
+ int dle, gfp_t kmallocflags)
{
size_t cmdlen, buflen;
char *cmdpos, *cmdbuf, *cmdtail;
cmdlen = strlen(cmd);
buflen = 11 + cmdlen;
+ if (unlikely(buflen <= cmdlen)) {
+ dev_err(cs->dev, "integer overflow in buflen\n");
+ return;
+ }
- if (likely(buflen > cmdlen)) {
- cmdbuf = kmalloc(buflen, kmallocflags);
- if (likely(cmdbuf != NULL)) {
- cmdpos = cmdbuf + 9;
- cmdtail = cmdpos + cmdlen;
- memcpy(cmdpos, cmd, cmdlen);
-
- if (cid > 0 && cid <= 65535) {
- do {
- *--cmdpos = '0' + cid % 10;
- cid /= 10;
- ++cmdlen;
- } while (cid);
- }
+ cmdbuf = kmalloc(buflen, kmallocflags);
+ if (unlikely(!cmdbuf)) {
+ dev_err(cs->dev, "out of memory\n");
+ return;
+ }
- cmdlen += 2;
- *--cmdpos = 'T';
- *--cmdpos = 'A';
+ cmdpos = cmdbuf + 9;
+ cmdtail = cmdpos + cmdlen;
+ memcpy(cmdpos, cmd, cmdlen);
- if (dle) {
- cmdlen += 4;
- *--cmdpos = '(';
- *--cmdpos = 0x10;
- *cmdtail++ = 0x10;
- *cmdtail++ = ')';
- }
+ if (cid > 0 && cid <= 65535) {
+ do {
+ *--cmdpos = '0' + cid % 10;
+ cid /= 10;
+ ++cmdlen;
+ } while (cid);
+ }
- cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
- kfree(cmdbuf);
- } else
- err("no memory for command buffer");
- } else
- err("overflow in buflen");
+ cmdlen += 2;
+ *--cmdpos = 'T';
+ *--cmdpos = 'A';
+
+ if (dle) {
+ cmdlen += 4;
+ *--cmdpos = '(';
+ *--cmdpos = 0x10;
+ *cmdtail++ = 0x10;
+ *cmdtail++ = ')';
+ }
+
+ cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
+ kfree(cmdbuf);
}
static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
@@ -910,9 +894,6 @@ static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
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);
@@ -930,16 +911,15 @@ static void bchannel_down(struct bc_state *bcs)
static void bchannel_up(struct bc_state *bcs)
{
- IFNULLRET(bcs);
-
if (!(bcs->chstate & CHS_D_UP)) {
- notice("%s: D channel not up", __func__);
+ dev_notice(bcs->cs->dev, "%s: D channel not up\n", __func__);
bcs->chstate |= CHS_D_UP;
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
}
if (bcs->chstate & CHS_B_UP) {
- notice("%s: B channel already up", __func__);
+ dev_notice(bcs->cs->dev, "%s: B channel already up\n",
+ __func__);
return;
}
@@ -947,17 +927,21 @@ static void bchannel_up(struct bc_state *bcs)
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)
@@ -965,20 +949,14 @@ static void start_dial(struct at_state_t *at_state, void *data, int seq_index)
at_state->pending_commands |= PC_CID;
- dbg(DEBUG_CMD, "Scheduling PC_CID");
-//#ifdef GIG_MAYINITONDIAL
-// if (atomic_read(&cs->MState) == MS_UNKNOWN) {
-// cs->at_state.pending_commands |= PC_INIT;
-// dbg(DEBUG_CMD, "Scheduling PC_INIT");
-// }
-//#endif
- atomic_set(&cs->commands_pending, 1); //FIXME
+ gig_dbg(DEBUG_CMD, "Scheduling PC_CID");
+ atomic_set(&cs->commands_pending, 1);
return;
error:
at_state->pending_commands |= PC_NOCID;
- dbg(DEBUG_CMD, "Scheduling PC_NOCID");
- atomic_set(&cs->commands_pending, 1); //FIXME
+ gig_dbg(DEBUG_CMD, "Scheduling PC_NOCID");
+ atomic_set(&cs->commands_pending, 1);
return;
}
@@ -991,13 +969,13 @@ static void start_accept(struct at_state_t *at_state)
if (retval == 0) {
at_state->pending_commands |= PC_ACCEPT;
- dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
- atomic_set(&cs->commands_pending, 1); //FIXME
+ gig_dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
+ atomic_set(&cs->commands_pending, 1);
} else {
//FIXME
at_state->pending_commands |= PC_HUP;
- dbg(DEBUG_CMD, "Scheduling PC_HUP");
- atomic_set(&cs->commands_pending, 1); //FIXME
+ gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
+ atomic_set(&cs->commands_pending, 1);
}
}
@@ -1008,9 +986,10 @@ static void do_start(struct cardstate *cs)
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
+ // FIXME: not in locked mode
+ // FIXME 2: only after init sequence
cs->waiting = 0;
wake_up(&cs->waitqueue);
@@ -1023,6 +1002,12 @@ static void finish_shutdown(struct cardstate *cs)
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;
@@ -1037,15 +1022,20 @@ static void do_shutdown(struct cardstate *cs)
if (atomic_read(&cs->mstate) == MS_READY) {
atomic_set(&cs->mstate, MS_SHUTDOWN);
cs->at_state.pending_commands |= PC_SHUTDOWN;
- atomic_set(&cs->commands_pending, 1); //FIXME
- dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN"); //FIXME
- //gigaset_schedule_event(cs); //FIXME
+ atomic_set(&cs->commands_pending, 1);
+ gig_dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN");
} else
finish_shutdown(cs);
}
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);
}
@@ -1069,9 +1059,11 @@ static int reinit_and_retry(struct cardstate *cs, int channel)
return 0;
if (channel < 0)
- warn("Could not enter cid mode. Reinit device and try again.");
+ dev_warn(cs->dev,
+ "Could not enter cid mode. Reinit device and try again.\n");
else {
- warn("Could not get a call id. Reinit device and try again.");
+ dev_warn(cs->dev,
+ "Could not get a call id. Reinit device and try again.\n");
cs->bcs[channel].at_state.pending_commands |= PC_CID;
}
schedule_init(cs, MS_INIT);
@@ -1079,7 +1071,7 @@ static int reinit_and_retry(struct cardstate *cs, int channel)
}
static int at_state_invalid(struct cardstate *cs,
- struct at_state_t *test_ptr)
+ struct at_state_t *test_ptr)
{
unsigned long flags;
unsigned channel;
@@ -1116,7 +1108,7 @@ static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
case ICALL_ACCEPT:
break;
default:
- err("internal error: disposition=%d", retval);
+ dev_err(cs->dev, "internal error: disposition=%d\n", retval);
/* --v-- fall through --v-- */
case ICALL_IGNORE:
case ICALL_REJECT:
@@ -1160,7 +1152,6 @@ static int do_lock(struct cardstate *cs)
mode = atomic_read(&cs->mode);
atomic_set(&cs->mstate, MS_LOCKED);
atomic_set(&cs->mode, M_UNKNOWN);
- //FIXME reset card state / at states / bcs states
return mode;
}
@@ -1173,8 +1164,7 @@ static int do_unlock(struct cardstate *cs)
atomic_set(&cs->mstate, MS_UNINITIALIZED);
atomic_set(&cs->mode, M_UNKNOWN);
gigaset_free_channels(cs);
- //FIXME reset card state / at states / bcs states
- if (atomic_read(&cs->connected))
+ if (cs->connected)
schedule_init(cs, MS_INIT);
return 0;
@@ -1203,21 +1193,23 @@ static void do_action(int action, struct cardstate *cs,
at_state->waiting = 1;
break;
case ACT_INIT:
- //FIXME setup everything
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); //FIXME
- dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
+ atomic_set(&cs->commands_pending, 1);
+ gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
break;
case ACT_FAILINIT:
- warn("Could not initialize the device.");
+ dev_warn(cs->dev, "Could not initialize the device.\n");
cs->dle = 0;
init_failed(cs, M_UNKNOWN);
cs->cur_at_seq = SEQ_NONE;
@@ -1273,8 +1265,8 @@ static void do_action(int action, struct cardstate *cs,
/* get fresh AT state structure for new CID */
at_state2 = get_free_channel(cs, ev->parameter);
if (!at_state2) {
- warn("RING ignored: "
- "could not allocate channel structure");
+ dev_warn(cs->dev,
+ "RING ignored: could not allocate channel structure\n");
break;
}
@@ -1302,7 +1294,7 @@ static void do_action(int action, struct cardstate *cs,
at_state = *p_at_state;
break;
case ACT_FAILSDOWN:
- warn("Could not shut down the device.");
+ dev_warn(cs->dev, "Could not shut down the device.\n");
/* fall through */
case ACT_FAKESDOWN:
case ACT_SDOWN:
@@ -1355,7 +1347,7 @@ static void do_action(int action, struct cardstate *cs,
break;
case ACT_ABORTHUP:
cs->cur_at_seq = SEQ_NONE;
- warn("Could not hang up.");
+ dev_warn(cs->dev, "Could not hang up.\n");
at_state->cid = -1;
if (bcs && cs->onechannel)
at_state->pending_commands |= PC_DLE0;
@@ -1367,14 +1359,15 @@ static void do_action(int action, struct cardstate *cs,
break;
case ACT_FAILDLE0:
cs->cur_at_seq = SEQ_NONE;
- warn("Could not leave DLE mode.");
+ dev_warn(cs->dev, "Could not leave DLE mode.\n");
at_state2 = &cs->bcs[cs->curchannel].at_state;
disconnect(&at_state2);
schedule_init(cs, MS_RECOVER);
break;
case ACT_FAILDLE1:
cs->cur_at_seq = SEQ_NONE;
- warn("Could not enter DLE mode. Try to hang up.");
+ dev_warn(cs->dev,
+ "Could not enter DLE mode. Trying to hang up.\n");
channel = cs->curchannel;
cs->bcs[channel].at_state.pending_commands |= PC_HUP;
atomic_set(&cs->commands_pending, 1);
@@ -1395,7 +1388,8 @@ static void do_action(int action, struct cardstate *cs,
cs->cur_at_seq = SEQ_NONE;
channel = cs->curchannel;
if (!reinit_and_retry(cs, channel)) {
- warn("Could not get a call id. Dialing not possible");
+ dev_warn(cs->dev,
+ "Could not get a call ID. Cannot dial.\n");
at_state2 = &cs->bcs[channel].at_state;
disconnect(&at_state2);
}
@@ -1428,7 +1422,8 @@ static void do_action(int action, struct cardstate *cs,
at_state->pending_commands |= PC_HUP;
atomic_set(&cs->commands_pending, 1);
break;
- case ACT_GETSTRING: /* warning: RING, ZDLE, ... are not handled properly any more */
+ case ACT_GETSTRING: /* warning: RING, ZDLE, ...
+ are not handled properly anymore */
at_state->getstring = 1;
break;
case ACT_SETVER:
@@ -1469,16 +1464,16 @@ static void do_action(int action, struct cardstate *cs,
case ACT_GOTVER:
if (cs->gotfwver == 0) {
cs->gotfwver = 1;
- dbg(DEBUG_ANY,
- "firmware version %02d.%03d.%02d.%02d",
- cs->fwver[0], cs->fwver[1],
- cs->fwver[2], cs->fwver[3]);
+ gig_dbg(DEBUG_ANY,
+ "firmware version %02d.%03d.%02d.%02d",
+ cs->fwver[0], cs->fwver[1],
+ cs->fwver[2], cs->fwver[3]);
break;
}
/* fall through */
case ACT_FAILVER:
cs->gotfwver = -1;
- err("could not read firmware version.");
+ dev_err(cs->dev, "could not read firmware version.\n");
break;
#ifdef CONFIG_GIGASET_DEBUG
case ACT_ERROR:
@@ -1496,16 +1491,16 @@ static void do_action(int action, struct cardstate *cs,
break;
#endif
case ACT_DEBUG:
- dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
+ gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
__func__, ev->type, at_state->ConState);
break;
case ACT_WARN:
- warn("%s: resp_code %d in ConState %d!",
- __func__, ev->type, at_state->ConState);
+ dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
+ __func__, ev->type, at_state->ConState);
break;
case ACT_ZCAU:
- warn("cause code %04x in connection state %d.",
- ev->parameter, at_state->ConState);
+ dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
+ ev->parameter, at_state->ConState);
break;
/* events from the LL */
@@ -1516,14 +1511,14 @@ static void do_action(int action, struct cardstate *cs,
start_accept(at_state);
break;
case ACT_PROTO_L2:
- dbg(DEBUG_CMD,
- "set protocol to %u", (unsigned) ev->parameter);
+ gig_dbg(DEBUG_CMD, "set protocol to %u",
+ (unsigned) ev->parameter);
at_state->bcs->proto2 = ev->parameter;
break;
case ACT_HUP:
at_state->pending_commands |= PC_HUP;
- atomic_set(&cs->commands_pending, 1); //FIXME
- dbg(DEBUG_CMD, "Scheduling PC_HUP");
+ atomic_set(&cs->commands_pending, 1);
+ gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
break;
/* hotplug events */
@@ -1555,17 +1550,19 @@ static void do_action(int action, struct cardstate *cs,
/* 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;
- dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
+ gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
} else {
cs->at_state.pending_commands |= PC_UMMODE;
- dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
+ gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
}
atomic_set(&cs->commands_pending, 1);
}
+ spin_unlock_irqrestore(&cs->lock, flags);
cs->waiting = 0;
wake_up(&cs->waitqueue);
break;
@@ -1590,7 +1587,7 @@ static void do_action(int action, struct cardstate *cs,
*p_resp_code = RSP_NULL;
}
} else
- err("%s: action==%d!", __func__, action);
+ dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
}
}
@@ -1609,47 +1606,46 @@ static void process_event(struct cardstate *cs, struct event_t *ev)
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) {
gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
- NULL, 0, NULL);
+ NULL, 0, NULL);
return;
}
} else {
at_state = ev->at_state;
if (at_state_invalid(cs, at_state)) {
- dbg(DEBUG_ANY,
- "event for invalid at_state %p", at_state);
+ gig_dbg(DEBUG_ANY, "event for invalid at_state %p",
+ at_state);
return;
}
}
- dbg(DEBUG_CMD,
- "connection state %d, event %d", at_state->ConState, ev->type);
+ gig_dbg(DEBUG_CMD, "connection state %d, event %d",
+ at_state->ConState, ev->type);
bcs = at_state->bcs;
sendcid = at_state->cid;
/* 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 */
- dbg(DEBUG_ANY, "old timeout");
+ gig_dbg(DEBUG_ANY, "old timeout");
} else if (!at_state->waiting)
- dbg(DEBUG_ANY, "timeout occured");
+ gig_dbg(DEBUG_ANY, "timeout occurred");
else
- dbg(DEBUG_ANY, "stopped waiting");
+ 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 */
+ /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
+ or at_state->str_var[STR_XXXX], set it */
if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
index = ev->type - RSP_VAR;
at_state->int_var[index] = ev->parameter;
@@ -1657,20 +1653,22 @@ static void process_event(struct cardstate *cs, struct event_t *ev)
index = ev->type - RSP_STR;
kfree(at_state->str_var[index]);
at_state->str_var[index] = ev->ptr;
- ev->ptr = NULL; /* prevent process_events() from deallocating ptr */
+ ev->ptr = NULL; /* prevent process_events() from
+ deallocating ptr */
}
if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
at_state->getstring = 0;
- /* Search row in dial array which matches modem response and current constate */
+ /* Search row in dial array which matches modem response and current
+ constate */
for (;; rep++) {
rcode = rep->resp_code;
- /* dbg (DEBUG_ANY, "rcode %d", rcode); */
if (rcode == RSP_LAST) {
/* found nothing...*/
- warn("%s: rcode=RSP_LAST: resp_code %d in ConState %d!",
- __func__, ev->type, at_state->ConState);
+ dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
+ "resp_code %d in ConState %d!\n",
+ __func__, ev->type, at_state->ConState);
return;
}
if ((rcode == RSP_ANY || rcode == ev->type)
@@ -1706,14 +1704,14 @@ static void process_event(struct cardstate *cs, struct event_t *ev)
} 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);
+ sendcid, cs->dle,
+ GFP_ATOMIC);
else
gigaset_add_event(cs, at_state,
- RSP_NODEV,
- NULL, 0, NULL);
+ RSP_NODEV,
+ NULL, 0, NULL);
}
spin_lock_irqsave(&cs->lock, flags);
@@ -1723,8 +1721,7 @@ static void process_event(struct cardstate *cs, struct event_t *ev)
} 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);
}
@@ -1744,17 +1741,16 @@ static void process_command_flags(struct cardstate *cs)
struct bc_state *bcs;
int i;
int sequence;
-
- IFNULLRET(cs);
+ unsigned long flags;
atomic_set(&cs->commands_pending, 0);
if (cs->cur_at_seq) {
- dbg(DEBUG_CMD, "not searching scheduled commands: busy");
+ gig_dbg(DEBUG_CMD, "not searching scheduled commands: busy");
return;
}
- dbg(DEBUG_CMD, "searching scheduled commands");
+ gig_dbg(DEBUG_CMD, "searching scheduled commands");
sequence = SEQ_NONE;
@@ -1795,8 +1791,9 @@ static void process_command_flags(struct cardstate *cs)
}
/* 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;
@@ -1810,6 +1807,7 @@ static void process_command_flags(struct cardstate *cs)
}
}
}
+ spin_unlock_irqrestore(&cs->lock, flags);
cs->at_state.pending_commands &= ~PC_UMMODE;
if (sequence != SEQ_NONE) {
schedule_sequence(cs, at_state, sequence);
@@ -1865,11 +1863,7 @@ static void process_command_flags(struct cardstate *cs)
if (cs->at_state.pending_commands & PC_CIDMODE) {
cs->at_state.pending_commands &= ~PC_CIDMODE;
if (atomic_read(&cs->mode) == M_UNIMODEM) {
-#if 0
- cs->retry_count = 2;
-#else
cs->retry_count = 1;
-#endif
schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
return;
}
@@ -1897,7 +1891,7 @@ static void process_command_flags(struct cardstate *cs)
switch (atomic_read(&cs->mode)) {
case M_UNIMODEM:
cs->at_state.pending_commands |= PC_CIDMODE;
- dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
+ gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
atomic_set(&cs->commands_pending, 1);
return;
#ifdef GIG_MAYINITONDIAL
@@ -1926,18 +1920,21 @@ static void process_events(struct cardstate *cs)
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;
@@ -1947,18 +1944,23 @@ static void process_events(struct cardstate *cs)
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) {
- err("infinite loop in process_events; aborting.");
+ dev_err(cs->dev,
+ "infinite loop in process_events; aborting.\n");
}
}
@@ -1970,12 +1972,9 @@ void gigaset_handle_event(unsigned long data)
{
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)) {
- dbg(DEBUG_INTR, "processing new data");
+ gig_dbg(DEBUG_INTR, "processing new data");
cs->ops->handle_input(cs->inbuf);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.