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Diffstat (limited to 'drivers/isdn/gigaset/asyncdata.c')
-rw-r--r--drivers/isdn/gigaset/asyncdata.c132
1 files changed, 61 insertions, 71 deletions
diff --git a/drivers/isdn/gigaset/asyncdata.c b/drivers/isdn/gigaset/asyncdata.c
index 171f8b703d61..ce3cd77094b3 100644
--- a/drivers/isdn/gigaset/asyncdata.c
+++ b/drivers/isdn/gigaset/asyncdata.c
@@ -3,7 +3,7 @@
*
* Copyright (c) 2005 by Tilman Schmidt <tilman@imap.cc>,
* Hansjoerg Lipp <hjlipp@web.de>,
- * Stefan Eilers <Eilers.Stefan@epost.de>.
+ * Stefan Eilers.
*
* =====================================================================
* This program is free software; you can redistribute it and/or
@@ -11,10 +11,6 @@
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* =====================================================================
- * ToDo: ...
- * =====================================================================
- * Version: $Id: asyncdata.c,v 1.2.2.7 2005/11/13 23:05:18 hjlipp Exp $
- * =====================================================================
*/
#include "gigaset.h"
@@ -45,7 +41,7 @@ static inline int muststuff(unsigned char c)
* number of processed bytes
*/
static inline int cmd_loop(unsigned char c, unsigned char *src, int numbytes,
- struct inbuf_t *inbuf)
+ struct inbuf_t *inbuf)
{
struct cardstate *cs = inbuf->cs;
unsigned cbytes = cs->cbytes;
@@ -55,10 +51,11 @@ static inline int cmd_loop(unsigned char c, unsigned char *src, int numbytes,
for (;;) {
cs->respdata[cbytes] = c;
if (c == 10 || c == 13) {
- 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); /* can change cs->dle */
+ gigaset_handle_modem_response(cs); /* can change
+ cs->dle */
cbytes = 0;
if (cs->dle &&
@@ -71,7 +68,7 @@ static inline int cmd_loop(unsigned char c, unsigned char *src, int numbytes,
if (cbytes < MAX_RESP_SIZE - 1)
cbytes++;
else
- warn("response too large");
+ dev_warn(cs->dev, "response too large\n");
}
if (!numbytes)
@@ -96,11 +93,12 @@ static inline int cmd_loop(unsigned char c, unsigned char *src, int numbytes,
* number of processed bytes
*/
static inline int lock_loop(unsigned char *src, int numbytes,
- struct inbuf_t *inbuf)
+ struct inbuf_t *inbuf)
{
struct cardstate *cs = inbuf->cs;
- gigaset_dbg_buffer(DEBUG_LOCKCMD, "received response", numbytes, src, 0);
+ gigaset_dbg_buffer(DEBUG_LOCKCMD, "received response",
+ numbytes, src);
gigaset_if_receive(cs, src, numbytes);
return numbytes;
@@ -115,24 +113,18 @@ static inline int lock_loop(unsigned char *src, int numbytes,
* numbytes (all bytes processed) on error --FIXME
*/
static inline int hdlc_loop(unsigned char c, unsigned char *src, int numbytes,
- struct inbuf_t *inbuf)
+ struct inbuf_t *inbuf)
{
struct cardstate *cs = inbuf->cs;
struct bc_state *bcs = inbuf->bcs;
- int inputstate;
- __u16 fcs;
- struct sk_buff *skb;
+ int inputstate = bcs->inputstate;
+ __u16 fcs = bcs->fcs;
+ struct sk_buff *skb = bcs->skb;
unsigned char error;
struct sk_buff *compskb;
int startbytes = numbytes;
int l;
- IFNULLRETVAL(bcs, numbytes);
- inputstate = bcs->inputstate;
- fcs = bcs->fcs;
- skb = bcs->skb;
- IFNULLRETVAL(skb, numbytes);
-
if (unlikely(inputstate & INS_byte_stuff)) {
inputstate &= ~INS_byte_stuff;
goto byte_stuff;
@@ -156,39 +148,37 @@ byte_stuff:
c ^= PPP_TRANS;
#ifdef CONFIG_GIGASET_DEBUG
if (unlikely(!muststuff(c)))
- dbg(DEBUG_HDLC,
- "byte stuffed: 0x%02x", c);
+ gig_dbg(DEBUG_HDLC, "byte stuffed: 0x%02x", c);
#endif
} else if (unlikely(c == PPP_FLAG)) {
if (unlikely(inputstate & INS_skip_frame)) {
if (!(inputstate & INS_have_data)) { /* 7E 7E */
- //dbg(DEBUG_HDLC, "(7e)7e------------------------");
#ifdef CONFIG_GIGASET_DEBUG
++bcs->emptycount;
#endif
} else
- dbg(DEBUG_HDLC,
+ gig_dbg(DEBUG_HDLC,
"7e----------------------------");
/* end of frame */
error = 1;
gigaset_rcv_error(NULL, cs, bcs);
} else if (!(inputstate & INS_have_data)) { /* 7E 7E */
- //dbg(DEBUG_HDLC, "(7e)7e------------------------");
#ifdef CONFIG_GIGASET_DEBUG
++bcs->emptycount;
#endif
break;
} else {
- dbg(DEBUG_HDLC,
- "7e----------------------------");
+ gig_dbg(DEBUG_HDLC,
+ "7e----------------------------");
/* end of frame */
error = 0;
if (unlikely(fcs != PPP_GOODFCS)) {
- err("Packet checksum at %lu failed, "
- "packet is corrupted (%u bytes)!",
+ dev_err(cs->dev,
+ "Packet checksum at %lu failed, "
+ "packet is corrupted (%u bytes)!\n",
bcs->rcvbytes, skb->len);
compskb = NULL;
gigaset_rcv_error(compskb, cs, bcs);
@@ -202,9 +192,11 @@ byte_stuff:
skb = NULL;
inputstate |= INS_skip_frame;
if (l == 1) {
- err("invalid packet size (1)!");
+ dev_err(cs->dev,
+ "invalid packet size (1)!\n");
error = 1;
- gigaset_rcv_error(NULL, cs, bcs);
+ gigaset_rcv_error(NULL,
+ cs, bcs);
}
}
if (likely(!(error ||
@@ -227,7 +219,8 @@ byte_stuff:
} else if (likely((skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)) {
skb_reserve(skb, HW_HDR_LEN);
} else {
- warn("could not allocate new skb");
+ dev_warn(cs->dev,
+ "could not allocate new skb\n");
inputstate |= INS_skip_frame;
}
@@ -235,7 +228,7 @@ byte_stuff:
#ifdef CONFIG_GIGASET_DEBUG
} else if (unlikely(muststuff(c))) {
/* Should not happen. Possible after ZDLE=1<CR><LF>. */
- dbg(DEBUG_HDLC, "not byte stuffed: 0x%02x", c);
+ gig_dbg(DEBUG_HDLC, "not byte stuffed: 0x%02x", c);
#endif
}
@@ -243,8 +236,8 @@ byte_stuff:
#ifdef CONFIG_GIGASET_DEBUG
if (unlikely(!(inputstate & INS_have_data))) {
- dbg(DEBUG_HDLC,
- "7e (%d x) ================", bcs->emptycount);
+ gig_dbg(DEBUG_HDLC, "7e (%d x) ================",
+ bcs->emptycount);
bcs->emptycount = 0;
}
#endif
@@ -253,14 +246,13 @@ byte_stuff:
if (likely(!(inputstate & INS_skip_frame))) {
if (unlikely(skb->len == SBUFSIZE)) {
- warn("received packet too long");
+ dev_warn(cs->dev, "received packet too long\n");
dev_kfree_skb_any(skb);
skb = NULL;
inputstate |= INS_skip_frame;
break;
}
- *gigaset_skb_put_quick(skb, 1) = c;
- /* *__skb_put (skb, 1) = c; */
+ *__skb_put(skb, 1) = c;
fcs = crc_ccitt_byte(fcs, c);
}
@@ -289,19 +281,14 @@ byte_stuff:
* numbytes (all bytes processed) on error --FIXME
*/
static inline int iraw_loop(unsigned char c, unsigned char *src, int numbytes,
- struct inbuf_t *inbuf)
+ struct inbuf_t *inbuf)
{
struct cardstate *cs = inbuf->cs;
struct bc_state *bcs = inbuf->bcs;
- int inputstate;
- struct sk_buff *skb;
+ int inputstate = bcs->inputstate;
+ struct sk_buff *skb = bcs->skb;
int startbytes = numbytes;
- IFNULLRETVAL(bcs, numbytes);
- inputstate = bcs->inputstate;
- skb = bcs->skb;
- IFNULLRETVAL(skb, numbytes);
-
for (;;) {
/* add character */
inputstate |= INS_have_data;
@@ -309,13 +296,13 @@ static inline int iraw_loop(unsigned char c, unsigned char *src, int numbytes,
if (likely(!(inputstate & INS_skip_frame))) {
if (unlikely(skb->len == SBUFSIZE)) {
//FIXME just pass skb up and allocate a new one
- warn("received packet too long");
+ dev_warn(cs->dev, "received packet too long\n");
dev_kfree_skb_any(skb);
skb = NULL;
inputstate |= INS_skip_frame;
break;
}
- *gigaset_skb_put_quick(skb, 1) = gigaset_invtab[c];
+ *__skb_put(skb, 1) = gigaset_invtab[c];
}
if (unlikely(!numbytes))
@@ -343,7 +330,7 @@ static inline int iraw_loop(unsigned char c, unsigned char *src, int numbytes,
!= NULL)) {
skb_reserve(skb, HW_HDR_LEN);
} else {
- warn("could not allocate new skb");
+ dev_warn(cs->dev, "could not allocate new skb\n");
inputstate |= INS_skip_frame;
}
}
@@ -364,13 +351,13 @@ void gigaset_m10x_input(struct inbuf_t *inbuf)
head = atomic_read(&inbuf->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) {
cs = inbuf->cs;
src = inbuf->data + head;
numbytes = (head > tail ? RBUFSIZE : tail) - head;
- dbg(DEBUG_INTR, "processing %u bytes", numbytes);
+ gig_dbg(DEBUG_INTR, "processing %u bytes", numbytes);
while (numbytes) {
if (atomic_read(&cs->mstate) == MS_LOCKED) {
@@ -392,8 +379,7 @@ void gigaset_m10x_input(struct inbuf_t *inbuf)
if (!(inbuf->inputstate & INS_DLE_char)) {
- /* FIXME Einfach je nach Modus Funktionszeiger in cs setzen [hier+hdlc_loop]? */
- /* FIXME Spart folgendes "if" und ermoeglicht andere Protokolle */
+ /* FIXME use function pointers? */
if (inbuf->inputstate & INS_command)
procbytes = cmd_loop(c, src, numbytes, inbuf);
else if (inbuf->bcs->proto2 == ISDN_PROTO_L2_HDLC)
@@ -403,13 +389,14 @@ void gigaset_m10x_input(struct inbuf_t *inbuf)
src += procbytes;
numbytes -= procbytes;
- } else { /* DLE-char */
+ } else { /* DLE char */
inbuf->inputstate &= ~INS_DLE_char;
switch (c) {
case 'X': /*begin of command*/
#ifdef CONFIG_GIGASET_DEBUG
if (inbuf->inputstate & INS_command)
- err("received <DLE> 'X' in command mode");
+ dev_err(cs->dev,
+ "received <DLE> 'X' in command mode\n");
#endif
inbuf->inputstate |=
INS_command | INS_DLE_command;
@@ -417,7 +404,8 @@ void gigaset_m10x_input(struct inbuf_t *inbuf)
case '.': /*end of command*/
#ifdef CONFIG_GIGASET_DEBUG
if (!(inbuf->inputstate & INS_command))
- err("received <DLE> '.' in hdlc mode");
+ dev_err(cs->dev,
+ "received <DLE> '.' in hdlc mode\n");
#endif
inbuf->inputstate &= cs->dle ?
~(INS_DLE_command|INS_command)
@@ -425,7 +413,9 @@ void gigaset_m10x_input(struct inbuf_t *inbuf)
break;
//case DLE_FLAG: /*DLE_FLAG in data stream*/ /* schon oben behandelt! */
default:
- err("received 0x10 0x%02x!", (int) c);
+ dev_err(cs->dev,
+ "received 0x10 0x%02x!\n",
+ (int) c);
/* FIXME: reset driver?? */
}
}
@@ -444,7 +434,7 @@ nextbyte:
}
}
- dbg(DEBUG_INTR, "setting head to %u", head);
+ gig_dbg(DEBUG_INTR, "setting head to %u", head);
atomic_set(&inbuf->head, head);
}
}
@@ -479,14 +469,13 @@ static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int head, int tail)
stuf_cnt++;
fcs = crc_ccitt_byte(fcs, *cp++);
}
- fcs ^= 0xffff; /* complement */
+ fcs ^= 0xffff; /* complement */
/* size of new buffer: original size + number of stuffing bytes
* + 2 bytes FCS + 2 stuffing bytes for FCS (if needed) + 2 flag bytes
*/
hdlc_skb = dev_alloc_skb(skb->len + stuf_cnt + 6 + tail + head);
if (!hdlc_skb) {
- err("unable to allocate memory for HDLC encoding!");
dev_kfree_skb(skb);
return NULL;
}
@@ -508,7 +497,7 @@ static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int head, int tail)
}
/* Finally add FCS (byte stuffed) and flag sequence */
- c = (fcs & 0x00ff); /* least significant byte first */
+ c = (fcs & 0x00ff); /* least significant byte first */
if (muststuff(c)) {
*(skb_put(hdlc_skb, 1)) = PPP_ESCAPE;
c ^= PPP_TRANS;
@@ -546,7 +535,6 @@ static struct sk_buff *iraw_encode(struct sk_buff *skb, int head, int tail)
/* worst case: every byte must be stuffed */
iraw_skb = dev_alloc_skb(2*skb->len + tail + head);
if (!iraw_skb) {
- err("unable to allocate memory for HDLC encoding!");
dev_kfree_skb(skb);
return NULL;
}
@@ -577,21 +565,23 @@ static struct sk_buff *iraw_encode(struct sk_buff *skb, int head, int tail)
*/
int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb)
{
- unsigned len;
-
- IFNULLRETVAL(bcs, -EFAULT);
- IFNULLRETVAL(skb, -EFAULT);
- len = skb->len;
+ unsigned len = skb->len;
+ unsigned long flags;
if (bcs->proto2 == ISDN_PROTO_L2_HDLC)
skb = HDLC_Encode(skb, HW_HDR_LEN, 0);
else
skb = iraw_encode(skb, HW_HDR_LEN, 0);
- if (!skb)
+ if (!skb) {
+ err("unable to allocate memory for encoding!\n");
return -ENOMEM;
+ }
skb_queue_tail(&bcs->squeue, skb);
- tasklet_schedule(&bcs->cs->write_tasklet);
+ spin_lock_irqsave(&bcs->cs->lock, flags);
+ if (bcs->cs->connected)
+ tasklet_schedule(&bcs->cs->write_tasklet);
+ spin_unlock_irqrestore(&bcs->cs->lock, flags);
return len; /* ok so far */
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 18:52:38 +0100