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path: root/drivers/isdn/gigaset/isocdata.c
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Diffstat (limited to 'drivers/isdn/gigaset/isocdata.c')
-rw-r--r--drivers/isdn/gigaset/isocdata.c139
1 files changed, 68 insertions, 71 deletions
diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c
index 5744eb91b315..45f017ed6e8c 100644
--- a/drivers/isdn/gigaset/isocdata.c
+++ b/drivers/isdn/gigaset/isocdata.c
@@ -10,10 +10,6 @@
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* =====================================================================
- * ToDo: ...
- * =====================================================================
- * Version: $Id: isocdata.c,v 1.2.2.5 2005/11/13 23:05:19 hjlipp Exp $
- * =====================================================================
*/
#include "gigaset.h"
@@ -87,14 +83,14 @@ static inline int isowbuf_startwrite(struct isowbuf_t *iwb)
{
if (!atomic_dec_and_test(&iwb->writesem)) {
atomic_inc(&iwb->writesem);
- dbg(DEBUG_ISO,
- "%s: couldn't acquire iso write semaphore", __func__);
+ gig_dbg(DEBUG_ISO, "%s: couldn't acquire iso write semaphore",
+ __func__);
return 0;
}
#ifdef CONFIG_GIGASET_DEBUG
- dbg(DEBUG_ISO,
- "%s: acquired iso write semaphore, data[write]=%02x, nbits=%d",
- __func__, iwb->data[atomic_read(&iwb->write)], iwb->wbits);
+ gig_dbg(DEBUG_ISO,
+ "%s: acquired iso write semaphore, data[write]=%02x, nbits=%d",
+ __func__, iwb->data[atomic_read(&iwb->write)], iwb->wbits);
#endif
return 1;
}
@@ -147,7 +143,7 @@ static inline void isowbuf_putflag(struct isowbuf_t *iwb)
/* recover the idle flag byte */
write = atomic_read(&iwb->write);
iwb->idle = iwb->data[write];
- dbg(DEBUG_ISO, "idle fill byte %02x", iwb->idle);
+ gig_dbg(DEBUG_ISO, "idle fill byte %02x", iwb->idle);
/* mask extraneous bits in buffer */
iwb->data[write] &= (1 << iwb->wbits) - 1;
}
@@ -166,15 +162,14 @@ int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size)
read = atomic_read(&iwb->nextread);
write = atomic_read(&iwb->write);
if (likely(read == write)) {
- //dbg(DEBUG_STREAM, "%s: send buffer empty", __func__);
/* return idle frame */
return read < BAS_OUTBUFPAD ?
- BAS_OUTBUFSIZE : read - BAS_OUTBUFPAD;
+ BAS_OUTBUFSIZE : read - BAS_OUTBUFPAD;
}
limit = read + size;
- dbg(DEBUG_STREAM,
- "%s: read=%d write=%d limit=%d", __func__, read, write, limit);
+ gig_dbg(DEBUG_STREAM, "%s: read=%d write=%d limit=%d",
+ __func__, read, write, limit);
#ifdef CONFIG_GIGASET_DEBUG
if (unlikely(size < 0 || size > BAS_OUTBUFPAD)) {
err("invalid size %d", size);
@@ -196,11 +191,12 @@ int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size)
return -EBUSY;
/* write position could have changed */
if (limit >= (write = atomic_read(&iwb->write))) {
- pbyte = iwb->data[write]; /* save partial byte */
+ pbyte = iwb->data[write]; /* save
+ partial byte */
limit = write + BAS_OUTBUFPAD;
- dbg(DEBUG_STREAM,
- "%s: filling %d->%d with %02x",
- __func__, write, limit, iwb->idle);
+ gig_dbg(DEBUG_STREAM,
+ "%s: filling %d->%d with %02x",
+ __func__, write, limit, iwb->idle);
if (write + BAS_OUTBUFPAD < BAS_OUTBUFSIZE)
memset(iwb->data + write, iwb->idle,
BAS_OUTBUFPAD);
@@ -211,9 +207,11 @@ int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size)
- write);
limit = 0;
}
- dbg(DEBUG_STREAM, "%s: restoring %02x at %d",
- __func__, pbyte, limit);
- iwb->data[limit] = pbyte; /* restore partial byte */
+ gig_dbg(DEBUG_STREAM,
+ "%s: restoring %02x at %d",
+ __func__, pbyte, limit);
+ iwb->data[limit] = pbyte; /* restore
+ partial byte */
atomic_set(&iwb->write, limit);
}
isowbuf_donewrite(iwb);
@@ -242,19 +240,17 @@ int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size)
* write hex bytes to syslog for debugging
*/
static inline void dump_bytes(enum debuglevel level, const char *tag,
- unsigned char *bytes, int count)
+ unsigned char *bytes, int count)
{
#ifdef CONFIG_GIGASET_DEBUG
unsigned char c;
static char dbgline[3 * 32 + 1];
static const char hexdigit[] = "0123456789abcdef";
int i = 0;
- IFNULLRET(tag);
- IFNULLRET(bytes);
while (count-- > 0) {
if (i > sizeof(dbgline) - 4) {
dbgline[i] = '\0';
- dbg(level, "%s:%s", tag, dbgline);
+ gig_dbg(level, "%s:%s", tag, dbgline);
i = 0;
}
c = *bytes++;
@@ -264,7 +260,7 @@ static inline void dump_bytes(enum debuglevel level, const char *tag,
dbgline[i++] = hexdigit[c & 0x0f];
}
dbgline[i] = '\0';
- dbg(level, "%s:%s", tag, dbgline);
+ gig_dbg(level, "%s:%s", tag, dbgline);
#endif
}
@@ -380,7 +376,7 @@ static u16 stufftab[5 * 256] = {
*/
static inline int hdlc_bitstuff_byte(struct isowbuf_t *iwb, unsigned char cin,
- int ones)
+ int ones)
{
u16 stuff;
int shiftinc, newones;
@@ -422,7 +418,7 @@ static inline int hdlc_bitstuff_byte(struct isowbuf_t *iwb, unsigned char cin,
*/
static inline int hdlc_buildframe(struct isowbuf_t *iwb,
- unsigned char *in, int count)
+ unsigned char *in, int count)
{
int ones;
u16 fcs;
@@ -431,8 +427,8 @@ static inline int hdlc_buildframe(struct isowbuf_t *iwb,
if (isowbuf_freebytes(iwb) < count + count / 5 + 6 ||
!isowbuf_startwrite(iwb)) {
- dbg(DEBUG_ISO, "%s: %d bytes free -> -EAGAIN",
- __func__, isowbuf_freebytes(iwb));
+ gig_dbg(DEBUG_ISO, "%s: %d bytes free -> -EAGAIN",
+ __func__, isowbuf_freebytes(iwb));
return -EAGAIN;
}
@@ -484,11 +480,11 @@ static inline int trans_buildframe(struct isowbuf_t *iwb,
if (isowbuf_freebytes(iwb) < count ||
!isowbuf_startwrite(iwb)) {
- dbg(DEBUG_ISO, "can't put %d bytes", count);
+ gig_dbg(DEBUG_ISO, "can't put %d bytes", count);
return -EAGAIN;
}
- dbg(DEBUG_STREAM, "put %d bytes", count);
+ gig_dbg(DEBUG_STREAM, "put %d bytes", count);
write = atomic_read(&iwb->write);
do {
c = gigaset_invtab[*in++];
@@ -508,11 +504,13 @@ int gigaset_isoc_buildframe(struct bc_state *bcs, unsigned char *in, int len)
switch (bcs->proto2) {
case ISDN_PROTO_L2_HDLC:
result = hdlc_buildframe(bcs->hw.bas->isooutbuf, in, len);
- dbg(DEBUG_ISO, "%s: %d bytes HDLC -> %d", __func__, len, result);
+ gig_dbg(DEBUG_ISO, "%s: %d bytes HDLC -> %d",
+ __func__, len, result);
break;
default: /* assume transparent */
result = trans_buildframe(bcs->hw.bas->isooutbuf, in, len);
- dbg(DEBUG_ISO, "%s: %d bytes trans -> %d", __func__, len, result);
+ gig_dbg(DEBUG_ISO, "%s: %d bytes trans -> %d",
+ __func__, len, result);
}
return result;
}
@@ -528,13 +526,13 @@ static inline void hdlc_putbyte(unsigned char c, struct bc_state *bcs)
return;
}
if (unlikely(bcs->skb->len == SBUFSIZE)) {
- warn("received oversized packet discarded");
+ dev_warn(bcs->cs->dev, "received oversized packet discarded\n");
bcs->hw.bas->giants++;
dev_kfree_skb_any(bcs->skb);
bcs->skb = NULL;
return;
}
- *gigaset_skb_put_quick(bcs->skb, 1) = c;
+ *__skb_put(bcs->skb, 1) = c;
}
/* hdlc_flush
@@ -549,7 +547,7 @@ static inline void hdlc_flush(struct bc_state *bcs)
if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)
skb_reserve(bcs->skb, HW_HDR_LEN);
else
- err("could not allocate skb");
+ dev_err(bcs->cs->dev, "could not allocate skb\n");
}
/* reset packet state */
@@ -571,23 +569,25 @@ static inline void hdlc_done(struct bc_state *bcs)
if ((procskb = bcs->skb) == NULL) {
/* previous error */
- dbg(DEBUG_ISO, "%s: skb=NULL", __func__);
+ gig_dbg(DEBUG_ISO, "%s: skb=NULL", __func__);
gigaset_rcv_error(NULL, bcs->cs, bcs);
} else if (procskb->len < 2) {
- notice("received short frame (%d octets)", procskb->len);
+ dev_notice(bcs->cs->dev, "received short frame (%d octets)\n",
+ procskb->len);
bcs->hw.bas->runts++;
gigaset_rcv_error(procskb, bcs->cs, bcs);
} else if (bcs->fcs != PPP_GOODFCS) {
- notice("frame check error (0x%04x)", bcs->fcs);
+ dev_notice(bcs->cs->dev, "frame check error (0x%04x)\n",
+ bcs->fcs);
bcs->hw.bas->fcserrs++;
gigaset_rcv_error(procskb, bcs->cs, bcs);
} else {
procskb->len -= 2; /* subtract FCS */
procskb->tail -= 2;
- dbg(DEBUG_ISO,
- "%s: good frame (%d octets)", __func__, procskb->len);
+ gig_dbg(DEBUG_ISO, "%s: good frame (%d octets)",
+ __func__, procskb->len);
dump_bytes(DEBUG_STREAM,
- "rcv data", procskb->data, procskb->len);
+ "rcv data", procskb->data, procskb->len);
bcs->hw.bas->goodbytes += procskb->len;
gigaset_rcv_skb(procskb, bcs->cs, bcs);
}
@@ -595,7 +595,7 @@ static inline void hdlc_done(struct bc_state *bcs)
if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)
skb_reserve(bcs->skb, HW_HDR_LEN);
else
- err("could not allocate skb");
+ dev_err(bcs->cs->dev, "could not allocate skb\n");
bcs->fcs = PPP_INITFCS;
}
@@ -610,14 +610,14 @@ static inline void hdlc_frag(struct bc_state *bcs, unsigned inbits)
return;
}
- notice("received partial byte (%d bits)", inbits);
+ dev_notice(bcs->cs->dev, "received partial byte (%d bits)\n", inbits);
bcs->hw.bas->alignerrs++;
gigaset_rcv_error(bcs->skb, bcs->cs, bcs);
if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)
skb_reserve(bcs->skb, HW_HDR_LEN);
else
- err("could not allocate skb");
+ dev_err(bcs->cs->dev, "could not allocate skb\n");
bcs->fcs = PPP_INITFCS;
}
@@ -659,16 +659,12 @@ static unsigned char bitcounts[256] = {
* bcs receiving B channel structure
*/
static inline void hdlc_unpack(unsigned char *src, unsigned count,
- struct bc_state *bcs)
+ struct bc_state *bcs)
{
- struct bas_bc_state *ubc;
+ struct bas_bc_state *ubc = bcs->hw.bas;
int inputstate;
unsigned seqlen, inbyte, inbits;
- IFNULLRET(bcs);
- ubc = bcs->hw.bas;
- IFNULLRET(ubc);
-
/* load previous state:
* inputstate = set of flag bits:
* - INS_flag_hunt: no complete opening flag received since connection setup or last abort
@@ -856,7 +852,7 @@ static inline void hdlc_unpack(unsigned char *src, unsigned count,
* bcs receiving B channel structure
*/
static inline void trans_receive(unsigned char *src, unsigned count,
- struct bc_state *bcs)
+ struct bc_state *bcs)
{
struct sk_buff *skb;
int dobytes;
@@ -870,7 +866,7 @@ static inline void trans_receive(unsigned char *src, unsigned count,
if (unlikely((skb = bcs->skb) == NULL)) {
bcs->skb = skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN);
if (!skb) {
- err("could not allocate skb");
+ dev_err(bcs->cs->dev, "could not allocate skb\n");
return;
}
skb_reserve(skb, HW_HDR_LEN);
@@ -888,7 +884,8 @@ static inline void trans_receive(unsigned char *src, unsigned count,
gigaset_rcv_skb(skb, bcs->cs, bcs);
bcs->skb = skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN);
if (!skb) {
- err("could not allocate skb");
+ dev_err(bcs->cs->dev,
+ "could not allocate skb\n");
return;
}
skb_reserve(bcs->skb, HW_HDR_LEN);
@@ -921,8 +918,8 @@ static void cmd_loop(unsigned char *src, int numbytes, struct inbuf_t *inbuf)
case '\r':
case '\n':
/* end of line */
- dbg(DEBUG_TRANSCMD, "%s: End of Command (%d Bytes)",
- __func__, cbytes);
+ gig_dbg(DEBUG_TRANSCMD, "%s: End of Command (%d Bytes)",
+ __func__, cbytes);
cs->cbytes = cbytes;
gigaset_handle_modem_response(cs);
cbytes = 0;
@@ -932,7 +929,7 @@ static void cmd_loop(unsigned char *src, int numbytes, struct inbuf_t *inbuf)
if (cbytes < MAX_RESP_SIZE - 1)
cbytes++;
else
- warn("response too large");
+ dev_warn(cs->dev, "response too large\n");
}
}
@@ -951,27 +948,27 @@ void gigaset_isoc_input(struct inbuf_t *inbuf)
head = atomic_read(&inbuf->head);
while (head != (tail = atomic_read(&inbuf->tail))) {
- dbg(DEBUG_INTR, "buffer state: %u -> %u", head, tail);
+ gig_dbg(DEBUG_INTR, "buffer state: %u -> %u", head, tail);
if (head > tail)
tail = RBUFSIZE;
src = inbuf->data + head;
numbytes = tail - head;
- dbg(DEBUG_INTR, "processing %u bytes", numbytes);
+ gig_dbg(DEBUG_INTR, "processing %u bytes", numbytes);
if (atomic_read(&cs->mstate) == MS_LOCKED) {
gigaset_dbg_buffer(DEBUG_LOCKCMD, "received response",
- numbytes, src, 0);
+ numbytes, src);
gigaset_if_receive(inbuf->cs, src, numbytes);
} else {
gigaset_dbg_buffer(DEBUG_CMD, "received response",
- numbytes, src, 0);
+ numbytes, src);
cmd_loop(src, numbytes, inbuf);
}
head += numbytes;
if (head == RBUFSIZE)
head = 0;
- dbg(DEBUG_INTR, "setting head to %u", head);
+ gig_dbg(DEBUG_INTR, "setting head to %u", head);
atomic_set(&inbuf->head, head);
}
}
@@ -992,18 +989,18 @@ void gigaset_isoc_input(struct inbuf_t *inbuf)
*/
int gigaset_isoc_send_skb(struct bc_state *bcs, struct sk_buff *skb)
{
- int len;
-
- IFNULLRETVAL(bcs, -EFAULT);
- IFNULLRETVAL(skb, -EFAULT);
- len = skb->len;
+ int len = skb->len;
+ unsigned long flags;
skb_queue_tail(&bcs->squeue, skb);
- dbg(DEBUG_ISO,
- "%s: skb queued, qlen=%d", __func__, skb_queue_len(&bcs->squeue));
+ gig_dbg(DEBUG_ISO, "%s: skb queued, qlen=%d",
+ __func__, skb_queue_len(&bcs->squeue));
/* tasklet submits URB if necessary */
- tasklet_schedule(&bcs->hw.bas->sent_tasklet);
+ spin_lock_irqsave(&bcs->cs->lock, flags);
+ if (bcs->cs->connected)
+ tasklet_schedule(&bcs->hw.bas->sent_tasklet);
+ spin_unlock_irqrestore(&bcs->cs->lock, flags);
return len; /* ok so far */
}
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-14 19:29:01 +0300