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linux/drivers/isdn/hisax/isac.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

679 lines
18 KiB
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/* $Id: isac.c,v 1.31.2.3 2004/01/13 14:31:25 keil Exp $
*
* ISAC specific routines
*
* Author Karsten Keil
* Copyright by Karsten Keil <keil@isdn4linux.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
* For changes and modifications please read
* Documentation/isdn/HiSax.cert
*
*/
#include "hisax.h"
#include "isac.h"
#include "arcofi.h"
#include "isdnl1.h"
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/init.h>
#define DBUSY_TIMER_VALUE 80
#define ARCOFI_USE 1
static char *ISACVer[] __devinitdata =
{"2086/2186 V1.1", "2085 B1", "2085 B2",
"2085 V2.3"};
void __devinit ISACVersion(struct IsdnCardState *cs, char *s)
{
int val;
val = cs->readisac(cs, ISAC_RBCH);
printk(KERN_INFO "%s ISAC version (%x): %s\n", s, val, ISACVer[(val >> 5) & 3]);
}
static void
ph_command(struct IsdnCardState *cs, unsigned int command)
{
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ph_command %x", command);
cs->writeisac(cs, ISAC_CIX0, (command << 2) | 3);
}
static void
isac_new_ph(struct IsdnCardState *cs)
{
switch (cs->dc.isac.ph_state) {
case (ISAC_IND_RS):
case (ISAC_IND_EI):
ph_command(cs, ISAC_CMD_DUI);
l1_msg(cs, HW_RESET | INDICATION, NULL);
break;
case (ISAC_IND_DID):
l1_msg(cs, HW_DEACTIVATE | CONFIRM, NULL);
break;
case (ISAC_IND_DR):
l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
break;
case (ISAC_IND_PU):
l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
break;
case (ISAC_IND_RSY):
l1_msg(cs, HW_RSYNC | INDICATION, NULL);
break;
case (ISAC_IND_ARD):
l1_msg(cs, HW_INFO2 | INDICATION, NULL);
break;
case (ISAC_IND_AI8):
l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
break;
case (ISAC_IND_AI10):
l1_msg(cs, HW_INFO4_P10 | INDICATION, NULL);
break;
default:
break;
}
}
static void
isac_bh(struct work_struct *work)
{
struct IsdnCardState *cs =
container_of(work, struct IsdnCardState, tqueue);
struct PStack *stptr;
if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
if (cs->debug)
debugl1(cs, "D-Channel Busy cleared");
stptr = cs->stlist;
while (stptr != NULL) {
stptr->l1.l1l2(stptr, PH_PAUSE | CONFIRM, NULL);
stptr = stptr->next;
}
}
if (test_and_clear_bit(D_L1STATECHANGE, &cs->event))
isac_new_ph(cs);
if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
DChannel_proc_rcv(cs);
if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
DChannel_proc_xmt(cs);
#if ARCOFI_USE
if (!test_bit(HW_ARCOFI, &cs->HW_Flags))
return;
if (test_and_clear_bit(D_RX_MON1, &cs->event))
arcofi_fsm(cs, ARCOFI_RX_END, NULL);
if (test_and_clear_bit(D_TX_MON1, &cs->event))
arcofi_fsm(cs, ARCOFI_TX_END, NULL);
#endif
}
static void
isac_empty_fifo(struct IsdnCardState *cs, int count)
{
u_char *ptr;
if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
debugl1(cs, "isac_empty_fifo");
if ((cs->rcvidx + count) >= MAX_DFRAME_LEN_L1) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "isac_empty_fifo overrun %d",
cs->rcvidx + count);
cs->writeisac(cs, ISAC_CMDR, 0x80);
cs->rcvidx = 0;
return;
}
ptr = cs->rcvbuf + cs->rcvidx;
cs->rcvidx += count;
cs->readisacfifo(cs, ptr, count);
cs->writeisac(cs, ISAC_CMDR, 0x80);
if (cs->debug & L1_DEB_ISAC_FIFO) {
char *t = cs->dlog;
t += sprintf(t, "isac_empty_fifo cnt %d", count);
QuickHex(t, ptr, count);
debugl1(cs, cs->dlog);
}
}
static void
isac_fill_fifo(struct IsdnCardState *cs)
{
int count, more;
u_char *ptr;
if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
debugl1(cs, "isac_fill_fifo");
if (!cs->tx_skb)
return;
count = cs->tx_skb->len;
if (count <= 0)
return;
more = 0;
if (count > 32) {
more = !0;
count = 32;
}
ptr = cs->tx_skb->data;
skb_pull(cs->tx_skb, count);
cs->tx_cnt += count;
cs->writeisacfifo(cs, ptr, count);
cs->writeisac(cs, ISAC_CMDR, more ? 0x8 : 0xa);
if (test_and_set_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
debugl1(cs, "isac_fill_fifo dbusytimer running");
del_timer(&cs->dbusytimer);
}
init_timer(&cs->dbusytimer);
cs->dbusytimer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ)/1000);
add_timer(&cs->dbusytimer);
if (cs->debug & L1_DEB_ISAC_FIFO) {
char *t = cs->dlog;
t += sprintf(t, "isac_fill_fifo cnt %d", count);
QuickHex(t, ptr, count);
debugl1(cs, cs->dlog);
}
}
void
isac_interrupt(struct IsdnCardState *cs, u_char val)
{
u_char exval, v1;
struct sk_buff *skb;
unsigned int count;
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ISAC interrupt %x", val);
if (val & 0x80) { /* RME */
exval = cs->readisac(cs, ISAC_RSTA);
if ((exval & 0x70) != 0x20) {
if (exval & 0x40) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "ISAC RDO");
#ifdef ERROR_STATISTIC
cs->err_rx++;
#endif
}
if (!(exval & 0x20)) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "ISAC CRC error");
#ifdef ERROR_STATISTIC
cs->err_crc++;
#endif
}
cs->writeisac(cs, ISAC_CMDR, 0x80);
} else {
count = cs->readisac(cs, ISAC_RBCL) & 0x1f;
if (count == 0)
count = 32;
isac_empty_fifo(cs, count);
if ((count = cs->rcvidx) > 0) {
cs->rcvidx = 0;
if (!(skb = alloc_skb(count, GFP_ATOMIC)))
printk(KERN_WARNING "HiSax: D receive out of memory\n");
else {
memcpy(skb_put(skb, count), cs->rcvbuf, count);
skb_queue_tail(&cs->rq, skb);
}
}
}
cs->rcvidx = 0;
schedule_event(cs, D_RCVBUFREADY);
}
if (val & 0x40) { /* RPF */
isac_empty_fifo(cs, 32);
}
if (val & 0x20) { /* RSC */
/* never */
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "ISAC RSC interrupt");
}
if (val & 0x10) { /* XPR */
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
del_timer(&cs->dbusytimer);
if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
schedule_event(cs, D_CLEARBUSY);
if (cs->tx_skb) {
if (cs->tx_skb->len) {
isac_fill_fifo(cs);
goto afterXPR;
} else {
dev_kfree_skb_irq(cs->tx_skb);
cs->tx_cnt = 0;
cs->tx_skb = NULL;
}
}
if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
cs->tx_cnt = 0;
isac_fill_fifo(cs);
} else
schedule_event(cs, D_XMTBUFREADY);
}
afterXPR:
if (val & 0x04) { /* CISQ */
exval = cs->readisac(cs, ISAC_CIR0);
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ISAC CIR0 %02X", exval );
if (exval & 2) {
cs->dc.isac.ph_state = (exval >> 2) & 0xf;
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ph_state change %x", cs->dc.isac.ph_state);
schedule_event(cs, D_L1STATECHANGE);
}
if (exval & 1) {
exval = cs->readisac(cs, ISAC_CIR1);
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ISAC CIR1 %02X", exval );
}
}
if (val & 0x02) { /* SIN */
/* never */
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "ISAC SIN interrupt");
}
if (val & 0x01) { /* EXI */
exval = cs->readisac(cs, ISAC_EXIR);
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "ISAC EXIR %02x", exval);
if (exval & 0x80) { /* XMR */
debugl1(cs, "ISAC XMR");
printk(KERN_WARNING "HiSax: ISAC XMR\n");
}
if (exval & 0x40) { /* XDU */
debugl1(cs, "ISAC XDU");
printk(KERN_WARNING "HiSax: ISAC XDU\n");
#ifdef ERROR_STATISTIC
cs->err_tx++;
#endif
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
del_timer(&cs->dbusytimer);
if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
schedule_event(cs, D_CLEARBUSY);
if (cs->tx_skb) { /* Restart frame */
skb_push(cs->tx_skb, cs->tx_cnt);
cs->tx_cnt = 0;
isac_fill_fifo(cs);
} else {
printk(KERN_WARNING "HiSax: ISAC XDU no skb\n");
debugl1(cs, "ISAC XDU no skb");
}
}
if (exval & 0x04) { /* MOS */
v1 = cs->readisac(cs, ISAC_MOSR);
if (cs->debug & L1_DEB_MONITOR)
debugl1(cs, "ISAC MOSR %02x", v1);
#if ARCOFI_USE
if (v1 & 0x08) {
if (!cs->dc.isac.mon_rx) {
if (!(cs->dc.isac.mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC))) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "ISAC MON RX out of memory!");
cs->dc.isac.mocr &= 0xf0;
cs->dc.isac.mocr |= 0x0a;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
goto afterMONR0;
} else
cs->dc.isac.mon_rxp = 0;
}
if (cs->dc.isac.mon_rxp >= MAX_MON_FRAME) {
cs->dc.isac.mocr &= 0xf0;
cs->dc.isac.mocr |= 0x0a;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
cs->dc.isac.mon_rxp = 0;
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "ISAC MON RX overflow!");
goto afterMONR0;
}
cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp++] = cs->readisac(cs, ISAC_MOR0);
if (cs->debug & L1_DEB_MONITOR)
debugl1(cs, "ISAC MOR0 %02x", cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp -1]);
if (cs->dc.isac.mon_rxp == 1) {
cs->dc.isac.mocr |= 0x04;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
}
}
afterMONR0:
if (v1 & 0x80) {
if (!cs->dc.isac.mon_rx) {
if (!(cs->dc.isac.mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC))) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "ISAC MON RX out of memory!");
cs->dc.isac.mocr &= 0x0f;
cs->dc.isac.mocr |= 0xa0;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
goto afterMONR1;
} else
cs->dc.isac.mon_rxp = 0;
}
if (cs->dc.isac.mon_rxp >= MAX_MON_FRAME) {
cs->dc.isac.mocr &= 0x0f;
cs->dc.isac.mocr |= 0xa0;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
cs->dc.isac.mon_rxp = 0;
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "ISAC MON RX overflow!");
goto afterMONR1;
}
cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp++] = cs->readisac(cs, ISAC_MOR1);
if (cs->debug & L1_DEB_MONITOR)
debugl1(cs, "ISAC MOR1 %02x", cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp -1]);
cs->dc.isac.mocr |= 0x40;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
}
afterMONR1:
if (v1 & 0x04) {
cs->dc.isac.mocr &= 0xf0;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
cs->dc.isac.mocr |= 0x0a;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
schedule_event(cs, D_RX_MON0);
}
if (v1 & 0x40) {
cs->dc.isac.mocr &= 0x0f;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
cs->dc.isac.mocr |= 0xa0;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
schedule_event(cs, D_RX_MON1);
}
if (v1 & 0x02) {
if ((!cs->dc.isac.mon_tx) || (cs->dc.isac.mon_txc &&
(cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc) &&
!(v1 & 0x08))) {
cs->dc.isac.mocr &= 0xf0;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
cs->dc.isac.mocr |= 0x0a;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
if (cs->dc.isac.mon_txc &&
(cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc))
schedule_event(cs, D_TX_MON0);
goto AfterMOX0;
}
if (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) {
schedule_event(cs, D_TX_MON0);
goto AfterMOX0;
}
cs->writeisac(cs, ISAC_MOX0,
cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]);
if (cs->debug & L1_DEB_MONITOR)
debugl1(cs, "ISAC %02x -> MOX0", cs->dc.isac.mon_tx[cs->dc.isac.mon_txp -1]);
}
AfterMOX0:
if (v1 & 0x20) {
if ((!cs->dc.isac.mon_tx) || (cs->dc.isac.mon_txc &&
(cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc) &&
!(v1 & 0x80))) {
cs->dc.isac.mocr &= 0x0f;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
cs->dc.isac.mocr |= 0xa0;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
if (cs->dc.isac.mon_txc &&
(cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc))
schedule_event(cs, D_TX_MON1);
goto AfterMOX1;
}
if (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) {
schedule_event(cs, D_TX_MON1);
goto AfterMOX1;
}
cs->writeisac(cs, ISAC_MOX1,
cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]);
if (cs->debug & L1_DEB_MONITOR)
debugl1(cs, "ISAC %02x -> MOX1", cs->dc.isac.mon_tx[cs->dc.isac.mon_txp -1]);
}
AfterMOX1:;
#endif
}
}
}
static void
ISAC_l1hw(struct PStack *st, int pr, void *arg)
{
struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
struct sk_buff *skb = arg;
u_long flags;
int val;
switch (pr) {
case (PH_DATA |REQUEST):
if (cs->debug & DEB_DLOG_HEX)
LogFrame(cs, skb->data, skb->len);
if (cs->debug & DEB_DLOG_VERBOSE)
dlogframe(cs, skb, 0);
spin_lock_irqsave(&cs->lock, flags);
if (cs->tx_skb) {
skb_queue_tail(&cs->sq, skb);
#ifdef L2FRAME_DEBUG /* psa */
if (cs->debug & L1_DEB_LAPD)
Logl2Frame(cs, skb, "PH_DATA Queued", 0);
#endif
} else {
cs->tx_skb = skb;
cs->tx_cnt = 0;
#ifdef L2FRAME_DEBUG /* psa */
if (cs->debug & L1_DEB_LAPD)
Logl2Frame(cs, skb, "PH_DATA", 0);
#endif
isac_fill_fifo(cs);
}
spin_unlock_irqrestore(&cs->lock, flags);
break;
case (PH_PULL |INDICATION):
spin_lock_irqsave(&cs->lock, flags);
if (cs->tx_skb) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
skb_queue_tail(&cs->sq, skb);
} else {
if (cs->debug & DEB_DLOG_HEX)
LogFrame(cs, skb->data, skb->len);
if (cs->debug & DEB_DLOG_VERBOSE)
dlogframe(cs, skb, 0);
cs->tx_skb = skb;
cs->tx_cnt = 0;
#ifdef L2FRAME_DEBUG /* psa */
if (cs->debug & L1_DEB_LAPD)
Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
#endif
isac_fill_fifo(cs);
}
spin_unlock_irqrestore(&cs->lock, flags);
break;
case (PH_PULL | REQUEST):
#ifdef L2FRAME_DEBUG /* psa */
if (cs->debug & L1_DEB_LAPD)
debugl1(cs, "-> PH_REQUEST_PULL");
#endif
if (!cs->tx_skb) {
test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
} else
test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
break;
case (HW_RESET | REQUEST):
spin_lock_irqsave(&cs->lock, flags);
if ((cs->dc.isac.ph_state == ISAC_IND_EI) ||
(cs->dc.isac.ph_state == ISAC_IND_DR) ||
(cs->dc.isac.ph_state == ISAC_IND_RS))
ph_command(cs, ISAC_CMD_TIM);
else
ph_command(cs, ISAC_CMD_RS);
spin_unlock_irqrestore(&cs->lock, flags);
break;
case (HW_ENABLE | REQUEST):
spin_lock_irqsave(&cs->lock, flags);
ph_command(cs, ISAC_CMD_TIM);
spin_unlock_irqrestore(&cs->lock, flags);
break;
case (HW_INFO3 | REQUEST):
spin_lock_irqsave(&cs->lock, flags);
ph_command(cs, ISAC_CMD_AR8);
spin_unlock_irqrestore(&cs->lock, flags);
break;
case (HW_TESTLOOP | REQUEST):
spin_lock_irqsave(&cs->lock, flags);
val = 0;
if (1 & (long) arg)
val |= 0x0c;
if (2 & (long) arg)
val |= 0x3;
if (test_bit(HW_IOM1, &cs->HW_Flags)) {
/* IOM 1 Mode */
if (!val) {
cs->writeisac(cs, ISAC_SPCR, 0xa);
cs->writeisac(cs, ISAC_ADF1, 0x2);
} else {
cs->writeisac(cs, ISAC_SPCR, val);
cs->writeisac(cs, ISAC_ADF1, 0xa);
}
} else {
/* IOM 2 Mode */
cs->writeisac(cs, ISAC_SPCR, val);
if (val)
cs->writeisac(cs, ISAC_ADF1, 0x8);
else
cs->writeisac(cs, ISAC_ADF1, 0x0);
}
spin_unlock_irqrestore(&cs->lock, flags);
break;
case (HW_DEACTIVATE | RESPONSE):
skb_queue_purge(&cs->rq);
skb_queue_purge(&cs->sq);
if (cs->tx_skb) {
dev_kfree_skb_any(cs->tx_skb);
cs->tx_skb = NULL;
}
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
del_timer(&cs->dbusytimer);
if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
schedule_event(cs, D_CLEARBUSY);
break;
default:
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "isac_l1hw unknown %04x", pr);
break;
}
}
static void
setstack_isac(struct PStack *st, struct IsdnCardState *cs)
{
st->l1.l1hw = ISAC_l1hw;
}
static void
DC_Close_isac(struct IsdnCardState *cs)
{
kfree(cs->dc.isac.mon_rx);
cs->dc.isac.mon_rx = NULL;
kfree(cs->dc.isac.mon_tx);
cs->dc.isac.mon_tx = NULL;
}
static void
dbusy_timer_handler(struct IsdnCardState *cs)
{
struct PStack *stptr;
int rbch, star;
if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
rbch = cs->readisac(cs, ISAC_RBCH);
star = cs->readisac(cs, ISAC_STAR);
if (cs->debug)
debugl1(cs, "D-Channel Busy RBCH %02x STAR %02x",
rbch, star);
if (rbch & ISAC_RBCH_XAC) { /* D-Channel Busy */
test_and_set_bit(FLG_L1_DBUSY, &cs->HW_Flags);
stptr = cs->stlist;
while (stptr != NULL) {
stptr->l1.l1l2(stptr, PH_PAUSE | INDICATION, NULL);
stptr = stptr->next;
}
} else {
/* discard frame; reset transceiver */
test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags);
if (cs->tx_skb) {
dev_kfree_skb_any(cs->tx_skb);
cs->tx_cnt = 0;
cs->tx_skb = NULL;
} else {
printk(KERN_WARNING "HiSax: ISAC D-Channel Busy no skb\n");
debugl1(cs, "D-Channel Busy no skb");
}
cs->writeisac(cs, ISAC_CMDR, 0x01); /* Transmitter reset */
cs->irq_func(cs->irq, cs);
}
}
}
void initisac(struct IsdnCardState *cs)
{
cs->setstack_d = setstack_isac;
cs->DC_Close = DC_Close_isac;
cs->dc.isac.mon_tx = NULL;
cs->dc.isac.mon_rx = NULL;
cs->writeisac(cs, ISAC_MASK, 0xff);
cs->dc.isac.mocr = 0xaa;
if (test_bit(HW_IOM1, &cs->HW_Flags)) {
/* IOM 1 Mode */
cs->writeisac(cs, ISAC_ADF2, 0x0);
cs->writeisac(cs, ISAC_SPCR, 0xa);
cs->writeisac(cs, ISAC_ADF1, 0x2);
cs->writeisac(cs, ISAC_STCR, 0x70);
cs->writeisac(cs, ISAC_MODE, 0xc9);
} else {
/* IOM 2 Mode */
if (!cs->dc.isac.adf2)
cs->dc.isac.adf2 = 0x80;
cs->writeisac(cs, ISAC_ADF2, cs->dc.isac.adf2);
cs->writeisac(cs, ISAC_SQXR, 0x2f);
cs->writeisac(cs, ISAC_SPCR, 0x00);
cs->writeisac(cs, ISAC_STCR, 0x70);
cs->writeisac(cs, ISAC_MODE, 0xc9);
cs->writeisac(cs, ISAC_TIMR, 0x00);
cs->writeisac(cs, ISAC_ADF1, 0x00);
}
ph_command(cs, ISAC_CMD_RS);
cs->writeisac(cs, ISAC_MASK, 0x0);
}
void clear_pending_isac_ints(struct IsdnCardState *cs)
{
int val, eval;
val = cs->readisac(cs, ISAC_STAR);
debugl1(cs, "ISAC STAR %x", val);
val = cs->readisac(cs, ISAC_MODE);
debugl1(cs, "ISAC MODE %x", val);
val = cs->readisac(cs, ISAC_ADF2);
debugl1(cs, "ISAC ADF2 %x", val);
val = cs->readisac(cs, ISAC_ISTA);
debugl1(cs, "ISAC ISTA %x", val);
if (val & 0x01) {
eval = cs->readisac(cs, ISAC_EXIR);
debugl1(cs, "ISAC EXIR %x", eval);
}
val = cs->readisac(cs, ISAC_CIR0);
debugl1(cs, "ISAC CIR0 %x", val);
cs->dc.isac.ph_state = (val >> 2) & 0xf;
schedule_event(cs, D_L1STATECHANGE);
/* Disable all IRQ */
cs->writeisac(cs, ISAC_MASK, 0xFF);
}
void __devinit
setup_isac(struct IsdnCardState *cs)
{
INIT_WORK(&cs->tqueue, isac_bh);
cs->dbusytimer.function = (void *) dbusy_timer_handler;
cs->dbusytimer.data = (long) cs;
init_timer(&cs->dbusytimer);
}
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