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kernel-ark/drivers/isdn/hardware/mISDN/mISDNipac.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

1657 lines
43 KiB
C
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/*
* isac.c ISAC specific routines
*
* Author Karsten Keil <keil@isdn4linux.de>
*
* Copyright 2009 by Karsten Keil <keil@isdn4linux.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/mISDNhw.h>
#include "ipac.h"
#define DBUSY_TIMER_VALUE 80
#define ARCOFI_USE 1
#define ISAC_REV "2.0"
MODULE_AUTHOR("Karsten Keil");
MODULE_VERSION(ISAC_REV);
MODULE_LICENSE("GPL v2");
#define ReadISAC(is, o) (is->read_reg(is->dch.hw, o + is->off))
#define WriteISAC(is, o, v) (is->write_reg(is->dch.hw, o + is->off, v))
#define ReadHSCX(h, o) (h->ip->read_reg(h->ip->hw, h->off + o))
#define WriteHSCX(h, o, v) (h->ip->write_reg(h->ip->hw, h->off + o, v))
#define ReadIPAC(ip, o) (ip->read_reg(ip->hw, o))
#define WriteIPAC(ip, o, v) (ip->write_reg(ip->hw, o, v))
static inline void
ph_command(struct isac_hw *isac, u8 command)
{
pr_debug("%s: ph_command %x\n", isac->name, command);
if (isac->type & IPAC_TYPE_ISACX)
WriteISAC(isac, ISACX_CIX0, (command << 4) | 0xE);
else
WriteISAC(isac, ISAC_CIX0, (command << 2) | 3);
}
static void
isac_ph_state_change(struct isac_hw *isac)
{
switch (isac->state) {
case (ISAC_IND_RS):
case (ISAC_IND_EI):
ph_command(isac, ISAC_CMD_DUI);
}
schedule_event(&isac->dch, FLG_PHCHANGE);
}
static void
isac_ph_state_bh(struct dchannel *dch)
{
struct isac_hw *isac = container_of(dch, struct isac_hw, dch);
switch (isac->state) {
case ISAC_IND_RS:
case ISAC_IND_EI:
dch->state = 0;
l1_event(dch->l1, HW_RESET_IND);
break;
case ISAC_IND_DID:
dch->state = 3;
l1_event(dch->l1, HW_DEACT_CNF);
break;
case ISAC_IND_DR:
dch->state = 3;
l1_event(dch->l1, HW_DEACT_IND);
break;
case ISAC_IND_PU:
dch->state = 4;
l1_event(dch->l1, HW_POWERUP_IND);
break;
case ISAC_IND_RSY:
if (dch->state <= 5) {
dch->state = 5;
l1_event(dch->l1, ANYSIGNAL);
} else {
dch->state = 8;
l1_event(dch->l1, LOSTFRAMING);
}
break;
case ISAC_IND_ARD:
dch->state = 6;
l1_event(dch->l1, INFO2);
break;
case ISAC_IND_AI8:
dch->state = 7;
l1_event(dch->l1, INFO4_P8);
break;
case ISAC_IND_AI10:
dch->state = 7;
l1_event(dch->l1, INFO4_P10);
break;
}
pr_debug("%s: TE newstate %x\n", isac->name, dch->state);
}
void
isac_empty_fifo(struct isac_hw *isac, int count)
{
u8 *ptr;
pr_debug("%s: %s %d\n", isac->name, __func__, count);
if (!isac->dch.rx_skb) {
isac->dch.rx_skb = mI_alloc_skb(isac->dch.maxlen, GFP_ATOMIC);
if (!isac->dch.rx_skb) {
pr_info("%s: D receive out of memory\n", isac->name);
WriteISAC(isac, ISAC_CMDR, 0x80);
return;
}
}
if ((isac->dch.rx_skb->len + count) >= isac->dch.maxlen) {
pr_debug("%s: %s overrun %d\n", isac->name, __func__,
isac->dch.rx_skb->len + count);
WriteISAC(isac, ISAC_CMDR, 0x80);
return;
}
ptr = skb_put(isac->dch.rx_skb, count);
isac->read_fifo(isac->dch.hw, isac->off, ptr, count);
WriteISAC(isac, ISAC_CMDR, 0x80);
if (isac->dch.debug & DEBUG_HW_DFIFO) {
char pfx[MISDN_MAX_IDLEN + 16];
snprintf(pfx, MISDN_MAX_IDLEN + 15, "D-recv %s %d ",
isac->name, count);
print_hex_dump_bytes(pfx, DUMP_PREFIX_OFFSET, ptr, count);
}
}
static void
isac_fill_fifo(struct isac_hw *isac)
{
int count, more;
u8 *ptr;
if (!isac->dch.tx_skb)
return;
count = isac->dch.tx_skb->len - isac->dch.tx_idx;
if (count <= 0)
return;
more = 0;
if (count > 32) {
more = !0;
count = 32;
}
pr_debug("%s: %s %d\n", isac->name, __func__, count);
ptr = isac->dch.tx_skb->data + isac->dch.tx_idx;
isac->dch.tx_idx += count;
isac->write_fifo(isac->dch.hw, isac->off, ptr, count);
WriteISAC(isac, ISAC_CMDR, more ? 0x8 : 0xa);
if (test_and_set_bit(FLG_BUSY_TIMER, &isac->dch.Flags)) {
pr_debug("%s: %s dbusytimer running\n", isac->name, __func__);
del_timer(&isac->dch.timer);
}
init_timer(&isac->dch.timer);
isac->dch.timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ)/1000);
add_timer(&isac->dch.timer);
if (isac->dch.debug & DEBUG_HW_DFIFO) {
char pfx[MISDN_MAX_IDLEN + 16];
snprintf(pfx, MISDN_MAX_IDLEN + 15, "D-send %s %d ",
isac->name, count);
print_hex_dump_bytes(pfx, DUMP_PREFIX_OFFSET, ptr, count);
}
}
static void
isac_rme_irq(struct isac_hw *isac)
{
u8 val, count;
val = ReadISAC(isac, ISAC_RSTA);
if ((val & 0x70) != 0x20) {
if (val & 0x40) {
pr_debug("%s: ISAC RDO\n", isac->name);
#ifdef ERROR_STATISTIC
isac->dch.err_rx++;
#endif
}
if (!(val & 0x20)) {
pr_debug("%s: ISAC CRC error\n", isac->name);
#ifdef ERROR_STATISTIC
isac->dch.err_crc++;
#endif
}
WriteISAC(isac, ISAC_CMDR, 0x80);
if (isac->dch.rx_skb)
dev_kfree_skb(isac->dch.rx_skb);
isac->dch.rx_skb = NULL;
} else {
count = ReadISAC(isac, ISAC_RBCL) & 0x1f;
if (count == 0)
count = 32;
isac_empty_fifo(isac, count);
recv_Dchannel(&isac->dch);
}
}
static void
isac_xpr_irq(struct isac_hw *isac)
{
if (test_and_clear_bit(FLG_BUSY_TIMER, &isac->dch.Flags))
del_timer(&isac->dch.timer);
if (isac->dch.tx_skb && isac->dch.tx_idx < isac->dch.tx_skb->len) {
isac_fill_fifo(isac);
} else {
if (isac->dch.tx_skb)
dev_kfree_skb(isac->dch.tx_skb);
if (get_next_dframe(&isac->dch))
isac_fill_fifo(isac);
}
}
static void
isac_retransmit(struct isac_hw *isac)
{
if (test_and_clear_bit(FLG_BUSY_TIMER, &isac->dch.Flags))
del_timer(&isac->dch.timer);
if (test_bit(FLG_TX_BUSY, &isac->dch.Flags)) {
/* Restart frame */
isac->dch.tx_idx = 0;
isac_fill_fifo(isac);
} else if (isac->dch.tx_skb) { /* should not happen */
pr_info("%s: tx_skb exist but not busy\n", isac->name);
test_and_set_bit(FLG_TX_BUSY, &isac->dch.Flags);
isac->dch.tx_idx = 0;
isac_fill_fifo(isac);
} else {
pr_info("%s: ISAC XDU no TX_BUSY\n", isac->name);
if (get_next_dframe(&isac->dch))
isac_fill_fifo(isac);
}
}
static void
isac_mos_irq(struct isac_hw *isac)
{
u8 val;
int ret;
val = ReadISAC(isac, ISAC_MOSR);
pr_debug("%s: ISAC MOSR %02x\n", isac->name, val);
#if ARCOFI_USE
if (val & 0x08) {
if (!isac->mon_rx) {
isac->mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC);
if (!isac->mon_rx) {
pr_info("%s: ISAC MON RX out of memory!\n",
isac->name);
isac->mocr &= 0xf0;
isac->mocr |= 0x0a;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
goto afterMONR0;
} else
isac->mon_rxp = 0;
}
if (isac->mon_rxp >= MAX_MON_FRAME) {
isac->mocr &= 0xf0;
isac->mocr |= 0x0a;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
isac->mon_rxp = 0;
pr_debug("%s: ISAC MON RX overflow!\n", isac->name);
goto afterMONR0;
}
isac->mon_rx[isac->mon_rxp++] = ReadISAC(isac, ISAC_MOR0);
pr_debug("%s: ISAC MOR0 %02x\n", isac->name,
isac->mon_rx[isac->mon_rxp - 1]);
if (isac->mon_rxp == 1) {
isac->mocr |= 0x04;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
}
}
afterMONR0:
if (val & 0x80) {
if (!isac->mon_rx) {
isac->mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC);
if (!isac->mon_rx) {
pr_info("%s: ISAC MON RX out of memory!\n",
isac->name);
isac->mocr &= 0x0f;
isac->mocr |= 0xa0;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
goto afterMONR1;
} else
isac->mon_rxp = 0;
}
if (isac->mon_rxp >= MAX_MON_FRAME) {
isac->mocr &= 0x0f;
isac->mocr |= 0xa0;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
isac->mon_rxp = 0;
pr_debug("%s: ISAC MON RX overflow!\n", isac->name);
goto afterMONR1;
}
isac->mon_rx[isac->mon_rxp++] = ReadISAC(isac, ISAC_MOR1);
pr_debug("%s: ISAC MOR1 %02x\n", isac->name,
isac->mon_rx[isac->mon_rxp - 1]);
isac->mocr |= 0x40;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
}
afterMONR1:
if (val & 0x04) {
isac->mocr &= 0xf0;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
isac->mocr |= 0x0a;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
if (isac->monitor) {
ret = isac->monitor(isac->dch.hw, MONITOR_RX_0,
isac->mon_rx, isac->mon_rxp);
if (ret)
kfree(isac->mon_rx);
} else {
pr_info("%s: MONITOR 0 received %d but no user\n",
isac->name, isac->mon_rxp);
kfree(isac->mon_rx);
}
isac->mon_rx = NULL;
isac->mon_rxp = 0;
}
if (val & 0x40) {
isac->mocr &= 0x0f;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
isac->mocr |= 0xa0;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
if (isac->monitor) {
ret = isac->monitor(isac->dch.hw, MONITOR_RX_1,
isac->mon_rx, isac->mon_rxp);
if (ret)
kfree(isac->mon_rx);
} else {
pr_info("%s: MONITOR 1 received %d but no user\n",
isac->name, isac->mon_rxp);
kfree(isac->mon_rx);
}
isac->mon_rx = NULL;
isac->mon_rxp = 0;
}
if (val & 0x02) {
if ((!isac->mon_tx) || (isac->mon_txc &&
(isac->mon_txp >= isac->mon_txc) && !(val & 0x08))) {
isac->mocr &= 0xf0;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
isac->mocr |= 0x0a;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
if (isac->mon_txc && (isac->mon_txp >= isac->mon_txc)) {
if (isac->monitor)
ret = isac->monitor(isac->dch.hw,
MONITOR_TX_0, NULL, 0);
}
kfree(isac->mon_tx);
isac->mon_tx = NULL;
isac->mon_txc = 0;
isac->mon_txp = 0;
goto AfterMOX0;
}
if (isac->mon_txc && (isac->mon_txp >= isac->mon_txc)) {
if (isac->monitor)
ret = isac->monitor(isac->dch.hw,
MONITOR_TX_0, NULL, 0);
kfree(isac->mon_tx);
isac->mon_tx = NULL;
isac->mon_txc = 0;
isac->mon_txp = 0;
goto AfterMOX0;
}
WriteISAC(isac, ISAC_MOX0, isac->mon_tx[isac->mon_txp++]);
pr_debug("%s: ISAC %02x -> MOX0\n", isac->name,
isac->mon_tx[isac->mon_txp - 1]);
}
AfterMOX0:
if (val & 0x20) {
if ((!isac->mon_tx) || (isac->mon_txc &&
(isac->mon_txp >= isac->mon_txc) && !(val & 0x80))) {
isac->mocr &= 0x0f;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
isac->mocr |= 0xa0;
WriteISAC(isac, ISAC_MOCR, isac->mocr);
if (isac->mon_txc && (isac->mon_txp >= isac->mon_txc)) {
if (isac->monitor)
ret = isac->monitor(isac->dch.hw,
MONITOR_TX_1, NULL, 0);
}
kfree(isac->mon_tx);
isac->mon_tx = NULL;
isac->mon_txc = 0;
isac->mon_txp = 0;
goto AfterMOX1;
}
if (isac->mon_txc && (isac->mon_txp >= isac->mon_txc)) {
if (isac->monitor)
ret = isac->monitor(isac->dch.hw,
MONITOR_TX_1, NULL, 0);
kfree(isac->mon_tx);
isac->mon_tx = NULL;
isac->mon_txc = 0;
isac->mon_txp = 0;
goto AfterMOX1;
}
WriteISAC(isac, ISAC_MOX1, isac->mon_tx[isac->mon_txp++]);
pr_debug("%s: ISAC %02x -> MOX1\n", isac->name,
isac->mon_tx[isac->mon_txp - 1]);
}
AfterMOX1:
val = 0; /* dummy to avoid warning */
#endif
}
static void
isac_cisq_irq(struct isac_hw *isac) {
u8 val;
val = ReadISAC(isac, ISAC_CIR0);
pr_debug("%s: ISAC CIR0 %02X\n", isac->name, val);
if (val & 2) {
pr_debug("%s: ph_state change %x->%x\n", isac->name,
isac->state, (val >> 2) & 0xf);
isac->state = (val >> 2) & 0xf;
isac_ph_state_change(isac);
}
if (val & 1) {
val = ReadISAC(isac, ISAC_CIR1);
pr_debug("%s: ISAC CIR1 %02X\n", isac->name, val);
}
}
static void
isacsx_cic_irq(struct isac_hw *isac)
{
u8 val;
val = ReadISAC(isac, ISACX_CIR0);
pr_debug("%s: ISACX CIR0 %02X\n", isac->name, val);
if (val & ISACX_CIR0_CIC0) {
pr_debug("%s: ph_state change %x->%x\n", isac->name,
isac->state, val >> 4);
isac->state = val >> 4;
isac_ph_state_change(isac);
}
}
static void
isacsx_rme_irq(struct isac_hw *isac)
{
int count;
u8 val;
val = ReadISAC(isac, ISACX_RSTAD);
if ((val & (ISACX_RSTAD_VFR |
ISACX_RSTAD_RDO |
ISACX_RSTAD_CRC |
ISACX_RSTAD_RAB))
!= (ISACX_RSTAD_VFR | ISACX_RSTAD_CRC)) {
pr_debug("%s: RSTAD %#x, dropped\n", isac->name, val);
#ifdef ERROR_STATISTIC
if (val & ISACX_RSTAD_CRC)
isac->dch.err_rx++;
else
isac->dch.err_crc++;
#endif
WriteISAC(isac, ISACX_CMDRD, ISACX_CMDRD_RMC);
if (isac->dch.rx_skb)
dev_kfree_skb(isac->dch.rx_skb);
isac->dch.rx_skb = NULL;
} else {
count = ReadISAC(isac, ISACX_RBCLD) & 0x1f;
if (count == 0)
count = 32;
isac_empty_fifo(isac, count);
if (isac->dch.rx_skb) {
skb_trim(isac->dch.rx_skb, isac->dch.rx_skb->len - 1);
pr_debug("%s: dchannel received %d\n", isac->name,
isac->dch.rx_skb->len);
recv_Dchannel(&isac->dch);
}
}
}
irqreturn_t
mISDNisac_irq(struct isac_hw *isac, u8 val)
{
if (unlikely(!val))
return IRQ_NONE;
pr_debug("%s: ISAC interrupt %02x\n", isac->name, val);
if (isac->type & IPAC_TYPE_ISACX) {
if (val & ISACX__CIC)
isacsx_cic_irq(isac);
if (val & ISACX__ICD) {
val = ReadISAC(isac, ISACX_ISTAD);
pr_debug("%s: ISTAD %02x\n", isac->name, val);
if (val & ISACX_D_XDU) {
pr_debug("%s: ISAC XDU\n", isac->name);
#ifdef ERROR_STATISTIC
isac->dch.err_tx++;
#endif
isac_retransmit(isac);
}
if (val & ISACX_D_XMR) {
pr_debug("%s: ISAC XMR\n", isac->name);
#ifdef ERROR_STATISTIC
isac->dch.err_tx++;
#endif
isac_retransmit(isac);
}
if (val & ISACX_D_XPR)
isac_xpr_irq(isac);
if (val & ISACX_D_RFO) {
pr_debug("%s: ISAC RFO\n", isac->name);
WriteISAC(isac, ISACX_CMDRD, ISACX_CMDRD_RMC);
}
if (val & ISACX_D_RME)
isacsx_rme_irq(isac);
if (val & ISACX_D_RPF)
isac_empty_fifo(isac, 0x20);
}
} else {
if (val & 0x80) /* RME */
isac_rme_irq(isac);
if (val & 0x40) /* RPF */
isac_empty_fifo(isac, 32);
if (val & 0x10) /* XPR */
isac_xpr_irq(isac);
if (val & 0x04) /* CISQ */
isac_cisq_irq(isac);
if (val & 0x20) /* RSC - never */
pr_debug("%s: ISAC RSC interrupt\n", isac->name);
if (val & 0x02) /* SIN - never */
pr_debug("%s: ISAC SIN interrupt\n", isac->name);
if (val & 0x01) { /* EXI */
val = ReadISAC(isac, ISAC_EXIR);
pr_debug("%s: ISAC EXIR %02x\n", isac->name, val);
if (val & 0x80) /* XMR */
pr_debug("%s: ISAC XMR\n", isac->name);
if (val & 0x40) { /* XDU */
pr_debug("%s: ISAC XDU\n", isac->name);
#ifdef ERROR_STATISTIC
isac->dch.err_tx++;
#endif
isac_retransmit(isac);
}
if (val & 0x04) /* MOS */
isac_mos_irq(isac);
}
}
return IRQ_HANDLED;
}
EXPORT_SYMBOL(mISDNisac_irq);
static int
isac_l1hw(struct mISDNchannel *ch, struct sk_buff *skb)
{
struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
struct dchannel *dch = container_of(dev, struct dchannel, dev);
struct isac_hw *isac = container_of(dch, struct isac_hw, dch);
int ret = -EINVAL;
struct mISDNhead *hh = mISDN_HEAD_P(skb);
u32 id;
u_long flags;
switch (hh->prim) {
case PH_DATA_REQ:
spin_lock_irqsave(isac->hwlock, flags);
ret = dchannel_senddata(dch, skb);
if (ret > 0) { /* direct TX */
id = hh->id; /* skb can be freed */
isac_fill_fifo(isac);
ret = 0;
spin_unlock_irqrestore(isac->hwlock, flags);
queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
} else
spin_unlock_irqrestore(isac->hwlock, flags);
return ret;
case PH_ACTIVATE_REQ:
ret = l1_event(dch->l1, hh->prim);
break;
case PH_DEACTIVATE_REQ:
test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
ret = l1_event(dch->l1, hh->prim);
break;
}
if (!ret)
dev_kfree_skb(skb);
return ret;
}
static int
isac_ctrl(struct isac_hw *isac, u32 cmd, u_long para)
{
u8 tl = 0;
u_long flags;
switch (cmd) {
case HW_TESTLOOP:
spin_lock_irqsave(isac->hwlock, flags);
if (!(isac->type & IPAC_TYPE_ISACX)) {
/* TODO: implement for IPAC_TYPE_ISACX */
if (para & 1) /* B1 */
tl |= 0x0c;
else if (para & 2) /* B2 */
tl |= 0x3;
/* we only support IOM2 mode */
WriteISAC(isac, ISAC_SPCR, tl);
if (tl)
WriteISAC(isac, ISAC_ADF1, 0x8);
else
WriteISAC(isac, ISAC_ADF1, 0x0);
}
spin_unlock_irqrestore(isac->hwlock, flags);
break;
default:
pr_debug("%s: %s unknown command %x %lx\n", isac->name,
__func__, cmd, para);
return -1;
}
return 0;
}
static int
isac_l1cmd(struct dchannel *dch, u32 cmd)
{
struct isac_hw *isac = container_of(dch, struct isac_hw, dch);
u_long flags;
pr_debug("%s: cmd(%x) state(%02x)\n", isac->name, cmd, isac->state);
switch (cmd) {
case INFO3_P8:
spin_lock_irqsave(isac->hwlock, flags);
ph_command(isac, ISAC_CMD_AR8);
spin_unlock_irqrestore(isac->hwlock, flags);
break;
case INFO3_P10:
spin_lock_irqsave(isac->hwlock, flags);
ph_command(isac, ISAC_CMD_AR10);
spin_unlock_irqrestore(isac->hwlock, flags);
break;
case HW_RESET_REQ:
spin_lock_irqsave(isac->hwlock, flags);
if ((isac->state == ISAC_IND_EI) ||
(isac->state == ISAC_IND_DR) ||
(isac->state == ISAC_IND_RS))
ph_command(isac, ISAC_CMD_TIM);
else
ph_command(isac, ISAC_CMD_RS);
spin_unlock_irqrestore(isac->hwlock, flags);
break;
case HW_DEACT_REQ:
skb_queue_purge(&dch->squeue);
if (dch->tx_skb) {
dev_kfree_skb(dch->tx_skb);
dch->tx_skb = NULL;
}
dch->tx_idx = 0;
if (dch->rx_skb) {
dev_kfree_skb(dch->rx_skb);
dch->rx_skb = NULL;
}
test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
del_timer(&dch->timer);
break;
case HW_POWERUP_REQ:
spin_lock_irqsave(isac->hwlock, flags);
ph_command(isac, ISAC_CMD_TIM);
spin_unlock_irqrestore(isac->hwlock, flags);
break;
case PH_ACTIVATE_IND:
test_and_set_bit(FLG_ACTIVE, &dch->Flags);
_queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
GFP_ATOMIC);
break;
case PH_DEACTIVATE_IND:
test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
_queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
GFP_ATOMIC);
break;
default:
pr_debug("%s: %s unknown command %x\n", isac->name,
__func__, cmd);
return -1;
}
return 0;
}
static void
isac_release(struct isac_hw *isac)
{
if (isac->type & IPAC_TYPE_ISACX)
WriteISAC(isac, ISACX_MASK, 0xff);
else
WriteISAC(isac, ISAC_MASK, 0xff);
if (isac->dch.timer.function != NULL) {
del_timer(&isac->dch.timer);
isac->dch.timer.function = NULL;
}
kfree(isac->mon_rx);
isac->mon_rx = NULL;
kfree(isac->mon_tx);
isac->mon_tx = NULL;
if (isac->dch.l1)
l1_event(isac->dch.l1, CLOSE_CHANNEL);
mISDN_freedchannel(&isac->dch);
}
static void
dbusy_timer_handler(struct isac_hw *isac)
{
int rbch, star;
u_long flags;
if (test_bit(FLG_BUSY_TIMER, &isac->dch.Flags)) {
spin_lock_irqsave(isac->hwlock, flags);
rbch = ReadISAC(isac, ISAC_RBCH);
star = ReadISAC(isac, ISAC_STAR);
pr_debug("%s: D-Channel Busy RBCH %02x STAR %02x\n",
isac->name, rbch, star);
if (rbch & ISAC_RBCH_XAC) /* D-Channel Busy */
test_and_set_bit(FLG_L1_BUSY, &isac->dch.Flags);
else {
/* discard frame; reset transceiver */
test_and_clear_bit(FLG_BUSY_TIMER, &isac->dch.Flags);
if (isac->dch.tx_idx)
isac->dch.tx_idx = 0;
else
pr_info("%s: ISAC D-Channel Busy no tx_idx\n",
isac->name);
/* Transmitter reset */
WriteISAC(isac, ISAC_CMDR, 0x01);
}
spin_unlock_irqrestore(isac->hwlock, flags);
}
}
static int
open_dchannel(struct isac_hw *isac, struct channel_req *rq)
{
pr_debug("%s: %s dev(%d) open from %p\n", isac->name, __func__,
isac->dch.dev.id, __builtin_return_address(1));
if (rq->protocol != ISDN_P_TE_S0)
return -EINVAL;
if (rq->adr.channel == 1)
/* E-Channel not supported */
return -EINVAL;
rq->ch = &isac->dch.dev.D;
rq->ch->protocol = rq->protocol;
if (isac->dch.state == 7)
_queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
0, NULL, GFP_KERNEL);
return 0;
}
static const char *ISACVer[] =
{"2086/2186 V1.1", "2085 B1", "2085 B2",
"2085 V2.3"};
static int
isac_init(struct isac_hw *isac)
{
u8 val;
int err = 0;
if (!isac->dch.l1) {
err = create_l1(&isac->dch, isac_l1cmd);
if (err)
return err;
}
isac->mon_tx = NULL;
isac->mon_rx = NULL;
isac->dch.timer.function = (void *) dbusy_timer_handler;
isac->dch.timer.data = (long)isac;
init_timer(&isac->dch.timer);
isac->mocr = 0xaa;
if (isac->type & IPAC_TYPE_ISACX) {
/* Disable all IRQ */
WriteISAC(isac, ISACX_MASK, 0xff);
val = ReadISAC(isac, ISACX_STARD);
pr_debug("%s: ISACX STARD %x\n", isac->name, val);
val = ReadISAC(isac, ISACX_ISTAD);
pr_debug("%s: ISACX ISTAD %x\n", isac->name, val);
val = ReadISAC(isac, ISACX_ISTA);
pr_debug("%s: ISACX ISTA %x\n", isac->name, val);
/* clear LDD */
WriteISAC(isac, ISACX_TR_CONF0, 0x00);
/* enable transmitter */
WriteISAC(isac, ISACX_TR_CONF2, 0x00);
/* transparent mode 0, RAC, stop/go */
WriteISAC(isac, ISACX_MODED, 0xc9);
/* all HDLC IRQ unmasked */
val = ReadISAC(isac, ISACX_ID);
if (isac->dch.debug & DEBUG_HW)
pr_notice("%s: ISACX Design ID %x\n",
isac->name, val & 0x3f);
val = ReadISAC(isac, ISACX_CIR0);
pr_debug("%s: ISACX CIR0 %02X\n", isac->name, val);
isac->state = val >> 4;
isac_ph_state_change(isac);
ph_command(isac, ISAC_CMD_RS);
WriteISAC(isac, ISACX_MASK, IPACX__ON);
WriteISAC(isac, ISACX_MASKD, 0x00);
} else { /* old isac */
WriteISAC(isac, ISAC_MASK, 0xff);
val = ReadISAC(isac, ISAC_STAR);
pr_debug("%s: ISAC STAR %x\n", isac->name, val);
val = ReadISAC(isac, ISAC_MODE);
pr_debug("%s: ISAC MODE %x\n", isac->name, val);
val = ReadISAC(isac, ISAC_ADF2);
pr_debug("%s: ISAC ADF2 %x\n", isac->name, val);
val = ReadISAC(isac, ISAC_ISTA);
pr_debug("%s: ISAC ISTA %x\n", isac->name, val);
if (val & 0x01) {
val = ReadISAC(isac, ISAC_EXIR);
pr_debug("%s: ISAC EXIR %x\n", isac->name, val);
}
val = ReadISAC(isac, ISAC_RBCH);
if (isac->dch.debug & DEBUG_HW)
pr_notice("%s: ISAC version (%x): %s\n", isac->name,
val, ISACVer[(val >> 5) & 3]);
isac->type |= ((val >> 5) & 3);
if (!isac->adf2)
isac->adf2 = 0x80;
if (!(isac->adf2 & 0x80)) { /* only IOM 2 Mode */
pr_info("%s: only support IOM2 mode but adf2=%02x\n",
isac->name, isac->adf2);
isac_release(isac);
return -EINVAL;
}
WriteISAC(isac, ISAC_ADF2, isac->adf2);
WriteISAC(isac, ISAC_SQXR, 0x2f);
WriteISAC(isac, ISAC_SPCR, 0x00);
WriteISAC(isac, ISAC_STCR, 0x70);
WriteISAC(isac, ISAC_MODE, 0xc9);
WriteISAC(isac, ISAC_TIMR, 0x00);
WriteISAC(isac, ISAC_ADF1, 0x00);
val = ReadISAC(isac, ISAC_CIR0);
pr_debug("%s: ISAC CIR0 %x\n", isac->name, val);
isac->state = (val >> 2) & 0xf;
isac_ph_state_change(isac);
ph_command(isac, ISAC_CMD_RS);
WriteISAC(isac, ISAC_MASK, 0);
}
return err;
}
int
mISDNisac_init(struct isac_hw *isac, void *hw)
{
mISDN_initdchannel(&isac->dch, MAX_DFRAME_LEN_L1, isac_ph_state_bh);
isac->dch.hw = hw;
isac->dch.dev.D.send = isac_l1hw;
isac->init = isac_init;
isac->release = isac_release;
isac->ctrl = isac_ctrl;
isac->open = open_dchannel;
isac->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0);
isac->dch.dev.nrbchan = 2;
return 0;
}
EXPORT_SYMBOL(mISDNisac_init);
static void
waitforCEC(struct hscx_hw *hx)
{
u8 starb, to = 50;
while (to) {
starb = ReadHSCX(hx, IPAC_STARB);
if (!(starb & 0x04))
break;
udelay(1);
to--;
}
if (to < 50)
pr_debug("%s: B%1d CEC %d us\n", hx->ip->name, hx->bch.nr,
50 - to);
if (!to)
pr_info("%s: B%1d CEC timeout\n", hx->ip->name, hx->bch.nr);
}
static void
waitforXFW(struct hscx_hw *hx)
{
u8 starb, to = 50;
while (to) {
starb = ReadHSCX(hx, IPAC_STARB);
if ((starb & 0x44) == 0x40)
break;
udelay(1);
to--;
}
if (to < 50)
pr_debug("%s: B%1d XFW %d us\n", hx->ip->name, hx->bch.nr,
50 - to);
if (!to)
pr_info("%s: B%1d XFW timeout\n", hx->ip->name, hx->bch.nr);
}
static void
hscx_cmdr(struct hscx_hw *hx, u8 cmd)
{
if (hx->ip->type & IPAC_TYPE_IPACX)
WriteHSCX(hx, IPACX_CMDRB, cmd);
else {
waitforCEC(hx);
WriteHSCX(hx, IPAC_CMDRB, cmd);
}
}
static void
hscx_empty_fifo(struct hscx_hw *hscx, u8 count)
{
u8 *p;
pr_debug("%s: B%1d %d\n", hscx->ip->name, hscx->bch.nr, count);
if (!hscx->bch.rx_skb) {
hscx->bch.rx_skb = mI_alloc_skb(hscx->bch.maxlen, GFP_ATOMIC);
if (!hscx->bch.rx_skb) {
pr_info("%s: B receive out of memory\n",
hscx->ip->name);
hscx_cmdr(hscx, 0x80); /* RMC */
return;
}
}
if ((hscx->bch.rx_skb->len + count) > hscx->bch.maxlen) {
pr_debug("%s: overrun %d\n", hscx->ip->name,
hscx->bch.rx_skb->len + count);
skb_trim(hscx->bch.rx_skb, 0);
hscx_cmdr(hscx, 0x80); /* RMC */
return;
}
p = skb_put(hscx->bch.rx_skb, count);
if (hscx->ip->type & IPAC_TYPE_IPACX)
hscx->ip->read_fifo(hscx->ip->hw,
hscx->off + IPACX_RFIFOB, p, count);
else
hscx->ip->read_fifo(hscx->ip->hw,
hscx->off, p, count);
hscx_cmdr(hscx, 0x80); /* RMC */
if (hscx->bch.debug & DEBUG_HW_BFIFO) {
snprintf(hscx->log, 64, "B%1d-recv %s %d ",
hscx->bch.nr, hscx->ip->name, count);
print_hex_dump_bytes(hscx->log, DUMP_PREFIX_OFFSET, p, count);
}
}
static void
hscx_fill_fifo(struct hscx_hw *hscx)
{
int count, more;
u8 *p;
if (!hscx->bch.tx_skb)
return;
count = hscx->bch.tx_skb->len - hscx->bch.tx_idx;
if (count <= 0)
return;
p = hscx->bch.tx_skb->data + hscx->bch.tx_idx;
more = test_bit(FLG_TRANSPARENT, &hscx->bch.Flags) ? 1 : 0;
if (count > hscx->fifo_size) {
count = hscx->fifo_size;
more = 1;
}
pr_debug("%s: B%1d %d/%d/%d\n", hscx->ip->name, hscx->bch.nr, count,
hscx->bch.tx_idx, hscx->bch.tx_skb->len);
hscx->bch.tx_idx += count;
if (hscx->ip->type & IPAC_TYPE_IPACX)
hscx->ip->write_fifo(hscx->ip->hw,
hscx->off + IPACX_XFIFOB, p, count);
else {
waitforXFW(hscx);
hscx->ip->write_fifo(hscx->ip->hw,
hscx->off, p, count);
}
hscx_cmdr(hscx, more ? 0x08 : 0x0a);
if (hscx->bch.debug & DEBUG_HW_BFIFO) {
snprintf(hscx->log, 64, "B%1d-send %s %d ",
hscx->bch.nr, hscx->ip->name, count);
print_hex_dump_bytes(hscx->log, DUMP_PREFIX_OFFSET, p, count);
}
}
static void
hscx_xpr(struct hscx_hw *hx)
{
if (hx->bch.tx_skb && hx->bch.tx_idx < hx->bch.tx_skb->len)
hscx_fill_fifo(hx);
else {
if (hx->bch.tx_skb) {
/* send confirm, on trans, free on hdlc. */
if (test_bit(FLG_TRANSPARENT, &hx->bch.Flags))
confirm_Bsend(&hx->bch);
dev_kfree_skb(hx->bch.tx_skb);
}
if (get_next_bframe(&hx->bch))
hscx_fill_fifo(hx);
}
}
static void
ipac_rme(struct hscx_hw *hx)
{
int count;
u8 rstab;
if (hx->ip->type & IPAC_TYPE_IPACX)
rstab = ReadHSCX(hx, IPACX_RSTAB);
else
rstab = ReadHSCX(hx, IPAC_RSTAB);
pr_debug("%s: B%1d RSTAB %02x\n", hx->ip->name, hx->bch.nr, rstab);
if ((rstab & 0xf0) != 0xa0) {
/* !(VFR && !RDO && CRC && !RAB) */
if (!(rstab & 0x80)) {
if (hx->bch.debug & DEBUG_HW_BCHANNEL)
pr_notice("%s: B%1d invalid frame\n",
hx->ip->name, hx->bch.nr);
}
if (rstab & 0x40) {
if (hx->bch.debug & DEBUG_HW_BCHANNEL)
pr_notice("%s: B%1d RDO proto=%x\n",
hx->ip->name, hx->bch.nr,
hx->bch.state);
}
if (!(rstab & 0x20)) {
if (hx->bch.debug & DEBUG_HW_BCHANNEL)
pr_notice("%s: B%1d CRC error\n",
hx->ip->name, hx->bch.nr);
}
hscx_cmdr(hx, 0x80); /* Do RMC */
return;
}
if (hx->ip->type & IPAC_TYPE_IPACX)
count = ReadHSCX(hx, IPACX_RBCLB);
else
count = ReadHSCX(hx, IPAC_RBCLB);
count &= (hx->fifo_size - 1);
if (count == 0)
count = hx->fifo_size;
hscx_empty_fifo(hx, count);
if (!hx->bch.rx_skb)
return;
if (hx->bch.rx_skb->len < 2) {
pr_debug("%s: B%1d frame to short %d\n",
hx->ip->name, hx->bch.nr, hx->bch.rx_skb->len);
skb_trim(hx->bch.rx_skb, 0);
} else {
skb_trim(hx->bch.rx_skb, hx->bch.rx_skb->len - 1);
recv_Bchannel(&hx->bch, 0);
}
}
static void
ipac_irq(struct hscx_hw *hx, u8 ista)
{
u8 istab, m, exirb = 0;
if (hx->ip->type & IPAC_TYPE_IPACX)
istab = ReadHSCX(hx, IPACX_ISTAB);
else if (hx->ip->type & IPAC_TYPE_IPAC) {
istab = ReadHSCX(hx, IPAC_ISTAB);
m = (hx->bch.nr & 1) ? IPAC__EXA : IPAC__EXB;
if (m & ista) {
exirb = ReadHSCX(hx, IPAC_EXIRB);
pr_debug("%s: B%1d EXIRB %02x\n", hx->ip->name,
hx->bch.nr, exirb);
}
} else if (hx->bch.nr & 2) { /* HSCX B */
if (ista & (HSCX__EXA | HSCX__ICA))
ipac_irq(&hx->ip->hscx[0], ista);
if (ista & HSCX__EXB) {
exirb = ReadHSCX(hx, IPAC_EXIRB);
pr_debug("%s: B%1d EXIRB %02x\n", hx->ip->name,
hx->bch.nr, exirb);
}
istab = ista & 0xF8;
} else { /* HSCX A */
istab = ReadHSCX(hx, IPAC_ISTAB);
if (ista & HSCX__EXA) {
exirb = ReadHSCX(hx, IPAC_EXIRB);
pr_debug("%s: B%1d EXIRB %02x\n", hx->ip->name,
hx->bch.nr, exirb);
}
istab = istab & 0xF8;
}
if (exirb & IPAC_B_XDU)
istab |= IPACX_B_XDU;
if (exirb & IPAC_B_RFO)
istab |= IPACX_B_RFO;
pr_debug("%s: B%1d ISTAB %02x\n", hx->ip->name, hx->bch.nr, istab);
if (!test_bit(FLG_ACTIVE, &hx->bch.Flags))
return;
if (istab & IPACX_B_RME)
ipac_rme(hx);
if (istab & IPACX_B_RPF) {
hscx_empty_fifo(hx, hx->fifo_size);
if (test_bit(FLG_TRANSPARENT, &hx->bch.Flags)) {
/* receive transparent audio data */
if (hx->bch.rx_skb)
recv_Bchannel(&hx->bch, 0);
}
}
if (istab & IPACX_B_RFO) {
pr_debug("%s: B%1d RFO error\n", hx->ip->name, hx->bch.nr);
hscx_cmdr(hx, 0x40); /* RRES */
}
if (istab & IPACX_B_XPR)
hscx_xpr(hx);
if (istab & IPACX_B_XDU) {
if (test_bit(FLG_TRANSPARENT, &hx->bch.Flags)) {
hscx_fill_fifo(hx);
return;
}
pr_debug("%s: B%1d XDU error at len %d\n", hx->ip->name,
hx->bch.nr, hx->bch.tx_idx);
hx->bch.tx_idx = 0;
hscx_cmdr(hx, 0x01); /* XRES */
}
}
irqreturn_t
mISDNipac_irq(struct ipac_hw *ipac, int maxloop)
{
int cnt = maxloop + 1;
u8 ista, istad;
struct isac_hw *isac = &ipac->isac;
if (ipac->type & IPAC_TYPE_IPACX) {
ista = ReadIPAC(ipac, ISACX_ISTA);
while (ista && cnt--) {
pr_debug("%s: ISTA %02x\n", ipac->name, ista);
if (ista & IPACX__ICA)
ipac_irq(&ipac->hscx[0], ista);
if (ista & IPACX__ICB)
ipac_irq(&ipac->hscx[1], ista);
if (ista & (ISACX__ICD | ISACX__CIC))
mISDNisac_irq(&ipac->isac, ista);
ista = ReadIPAC(ipac, ISACX_ISTA);
}
} else if (ipac->type & IPAC_TYPE_IPAC) {
ista = ReadIPAC(ipac, IPAC_ISTA);
while (ista && cnt--) {
pr_debug("%s: ISTA %02x\n", ipac->name, ista);
if (ista & (IPAC__ICD | IPAC__EXD)) {
istad = ReadISAC(isac, ISAC_ISTA);
pr_debug("%s: ISTAD %02x\n", ipac->name, istad);
if (istad & IPAC_D_TIN2)
pr_debug("%s TIN2 irq\n", ipac->name);
if (ista & IPAC__EXD)
istad |= 1; /* ISAC EXI */
mISDNisac_irq(isac, istad);
}
if (ista & (IPAC__ICA | IPAC__EXA))
ipac_irq(&ipac->hscx[0], ista);
if (ista & (IPAC__ICB | IPAC__EXB))
ipac_irq(&ipac->hscx[1], ista);
ista = ReadIPAC(ipac, IPAC_ISTA);
}
} else if (ipac->type & IPAC_TYPE_HSCX) {
while (cnt) {
ista = ReadIPAC(ipac, IPAC_ISTAB + ipac->hscx[1].off);
pr_debug("%s: B2 ISTA %02x\n", ipac->name, ista);
if (ista)
ipac_irq(&ipac->hscx[1], ista);
istad = ReadISAC(isac, ISAC_ISTA);
pr_debug("%s: ISTAD %02x\n", ipac->name, istad);
if (istad)
mISDNisac_irq(isac, istad);
if (0 == (ista | istad))
break;
cnt--;
}
}
if (cnt > maxloop) /* only for ISAC/HSCX without PCI IRQ test */
return IRQ_NONE;
if (cnt < maxloop)
pr_debug("%s: %d irqloops cpu%d\n", ipac->name,
maxloop - cnt, smp_processor_id());
if (maxloop && !cnt)
pr_notice("%s: %d IRQ LOOP cpu%d\n", ipac->name,
maxloop, smp_processor_id());
return IRQ_HANDLED;
}
EXPORT_SYMBOL(mISDNipac_irq);
static int
hscx_mode(struct hscx_hw *hscx, u32 bprotocol)
{
pr_debug("%s: HSCX %c protocol %x-->%x ch %d\n", hscx->ip->name,
'@' + hscx->bch.nr, hscx->bch.state, bprotocol, hscx->bch.nr);
if (hscx->ip->type & IPAC_TYPE_IPACX) {
if (hscx->bch.nr & 1) { /* B1 and ICA */
WriteIPAC(hscx->ip, ISACX_BCHA_TSDP_BC1, 0x80);
WriteIPAC(hscx->ip, ISACX_BCHA_CR, 0x88);
} else { /* B2 and ICB */
WriteIPAC(hscx->ip, ISACX_BCHB_TSDP_BC1, 0x81);
WriteIPAC(hscx->ip, ISACX_BCHB_CR, 0x88);
}
switch (bprotocol) {
case ISDN_P_NONE: /* init */
WriteHSCX(hscx, IPACX_MODEB, 0xC0); /* rec off */
WriteHSCX(hscx, IPACX_EXMB, 0x30); /* std adj. */
WriteHSCX(hscx, IPACX_MASKB, 0xFF); /* ints off */
hscx_cmdr(hscx, 0x41);
test_and_clear_bit(FLG_HDLC, &hscx->bch.Flags);
test_and_clear_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
break;
case ISDN_P_B_RAW:
WriteHSCX(hscx, IPACX_MODEB, 0x88); /* ex trans */
WriteHSCX(hscx, IPACX_EXMB, 0x00); /* trans */
hscx_cmdr(hscx, 0x41);
WriteHSCX(hscx, IPACX_MASKB, IPACX_B_ON);
test_and_set_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
break;
case ISDN_P_B_HDLC:
WriteHSCX(hscx, IPACX_MODEB, 0xC0); /* trans */
WriteHSCX(hscx, IPACX_EXMB, 0x00); /* hdlc,crc */
hscx_cmdr(hscx, 0x41);
WriteHSCX(hscx, IPACX_MASKB, IPACX_B_ON);
test_and_set_bit(FLG_HDLC, &hscx->bch.Flags);
break;
default:
pr_info("%s: protocol not known %x\n", hscx->ip->name,
bprotocol);
return -ENOPROTOOPT;
}
} else if (hscx->ip->type & IPAC_TYPE_IPAC) { /* IPAC */
WriteHSCX(hscx, IPAC_CCR1, 0x82);
WriteHSCX(hscx, IPAC_CCR2, 0x30);
WriteHSCX(hscx, IPAC_XCCR, 0x07);
WriteHSCX(hscx, IPAC_RCCR, 0x07);
WriteHSCX(hscx, IPAC_TSAX, hscx->slot);
WriteHSCX(hscx, IPAC_TSAR, hscx->slot);
switch (bprotocol) {
case ISDN_P_NONE:
WriteHSCX(hscx, IPAC_TSAX, 0x1F);
WriteHSCX(hscx, IPAC_TSAR, 0x1F);
WriteHSCX(hscx, IPAC_MODEB, 0x84);
WriteHSCX(hscx, IPAC_CCR1, 0x82);
WriteHSCX(hscx, IPAC_MASKB, 0xFF); /* ints off */
test_and_clear_bit(FLG_HDLC, &hscx->bch.Flags);
test_and_clear_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
break;
case ISDN_P_B_RAW:
WriteHSCX(hscx, IPAC_MODEB, 0xe4); /* ex trans */
WriteHSCX(hscx, IPAC_CCR1, 0x82);
hscx_cmdr(hscx, 0x41);
WriteHSCX(hscx, IPAC_MASKB, 0);
test_and_set_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
break;
case ISDN_P_B_HDLC:
WriteHSCX(hscx, IPAC_MODEB, 0x8c);
WriteHSCX(hscx, IPAC_CCR1, 0x8a);
hscx_cmdr(hscx, 0x41);
WriteHSCX(hscx, IPAC_MASKB, 0);
test_and_set_bit(FLG_HDLC, &hscx->bch.Flags);
break;
default:
pr_info("%s: protocol not known %x\n", hscx->ip->name,
bprotocol);
return -ENOPROTOOPT;
}
} else if (hscx->ip->type & IPAC_TYPE_HSCX) { /* HSCX */
WriteHSCX(hscx, IPAC_CCR1, 0x85);
WriteHSCX(hscx, IPAC_CCR2, 0x30);
WriteHSCX(hscx, IPAC_XCCR, 0x07);
WriteHSCX(hscx, IPAC_RCCR, 0x07);
WriteHSCX(hscx, IPAC_TSAX, hscx->slot);
WriteHSCX(hscx, IPAC_TSAR, hscx->slot);
switch (bprotocol) {
case ISDN_P_NONE:
WriteHSCX(hscx, IPAC_TSAX, 0x1F);
WriteHSCX(hscx, IPAC_TSAR, 0x1F);
WriteHSCX(hscx, IPAC_MODEB, 0x84);
WriteHSCX(hscx, IPAC_CCR1, 0x85);
WriteHSCX(hscx, IPAC_MASKB, 0xFF); /* ints off */
test_and_clear_bit(FLG_HDLC, &hscx->bch.Flags);
test_and_clear_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
break;
case ISDN_P_B_RAW:
WriteHSCX(hscx, IPAC_MODEB, 0xe4); /* ex trans */
WriteHSCX(hscx, IPAC_CCR1, 0x85);
hscx_cmdr(hscx, 0x41);
WriteHSCX(hscx, IPAC_MASKB, 0);
test_and_set_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
break;
case ISDN_P_B_HDLC:
WriteHSCX(hscx, IPAC_MODEB, 0x8c);
WriteHSCX(hscx, IPAC_CCR1, 0x8d);
hscx_cmdr(hscx, 0x41);
WriteHSCX(hscx, IPAC_MASKB, 0);
test_and_set_bit(FLG_HDLC, &hscx->bch.Flags);
break;
default:
pr_info("%s: protocol not known %x\n", hscx->ip->name,
bprotocol);
return -ENOPROTOOPT;
}
} else
return -EINVAL;
hscx->bch.state = bprotocol;
return 0;
}
static int
hscx_l2l1(struct mISDNchannel *ch, struct sk_buff *skb)
{
struct bchannel *bch = container_of(ch, struct bchannel, ch);
struct hscx_hw *hx = container_of(bch, struct hscx_hw, bch);
int ret = -EINVAL;
struct mISDNhead *hh = mISDN_HEAD_P(skb);
u32 id;
u_long flags;
switch (hh->prim) {
case PH_DATA_REQ:
spin_lock_irqsave(hx->ip->hwlock, flags);
ret = bchannel_senddata(bch, skb);
if (ret > 0) { /* direct TX */
id = hh->id; /* skb can be freed */
ret = 0;
hscx_fill_fifo(hx);
spin_unlock_irqrestore(hx->ip->hwlock, flags);
if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
} else
spin_unlock_irqrestore(hx->ip->hwlock, flags);
return ret;
case PH_ACTIVATE_REQ:
spin_lock_irqsave(hx->ip->hwlock, flags);
if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
ret = hscx_mode(hx, ch->protocol);
else
ret = 0;
spin_unlock_irqrestore(hx->ip->hwlock, flags);
if (!ret)
_queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
NULL, GFP_KERNEL);
break;
case PH_DEACTIVATE_REQ:
spin_lock_irqsave(hx->ip->hwlock, flags);
mISDN_clear_bchannel(bch);
hscx_mode(hx, ISDN_P_NONE);
spin_unlock_irqrestore(hx->ip->hwlock, flags);
_queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
NULL, GFP_KERNEL);
ret = 0;
break;
default:
pr_info("%s: %s unknown prim(%x,%x)\n",
hx->ip->name, __func__, hh->prim, hh->id);
ret = -EINVAL;
}
if (!ret)
dev_kfree_skb(skb);
return ret;
}
static int
channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
{
int ret = 0;
switch (cq->op) {
case MISDN_CTRL_GETOP:
cq->op = 0;
break;
/* Nothing implemented yet */
case MISDN_CTRL_FILL_EMPTY:
default:
pr_info("%s: unknown Op %x\n", __func__, cq->op);
ret = -EINVAL;
break;
}
return ret;
}
static int
hscx_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
{
struct bchannel *bch = container_of(ch, struct bchannel, ch);
struct hscx_hw *hx = container_of(bch, struct hscx_hw, bch);
int ret = -EINVAL;
u_long flags;
pr_debug("%s: %s cmd:%x %p\n", hx->ip->name, __func__, cmd, arg);
switch (cmd) {
case CLOSE_CHANNEL:
test_and_clear_bit(FLG_OPEN, &bch->Flags);
if (test_bit(FLG_ACTIVE, &bch->Flags)) {
spin_lock_irqsave(hx->ip->hwlock, flags);
mISDN_freebchannel(bch);
hscx_mode(hx, ISDN_P_NONE);
spin_unlock_irqrestore(hx->ip->hwlock, flags);
} else {
skb_queue_purge(&bch->rqueue);
bch->rcount = 0;
}
ch->protocol = ISDN_P_NONE;
ch->peer = NULL;
module_put(hx->ip->owner);
ret = 0;
break;
case CONTROL_CHANNEL:
ret = channel_bctrl(bch, arg);
break;
default:
pr_info("%s: %s unknown prim(%x)\n",
hx->ip->name, __func__, cmd);
}
return ret;
}
static void
free_ipac(struct ipac_hw *ipac)
{
isac_release(&ipac->isac);
}
static const char *HSCXVer[] =
{"A1", "?1", "A2", "?3", "A3", "V2.1", "?6", "?7",
"?8", "?9", "?10", "?11", "?12", "?13", "?14", "???"};
static void
hscx_init(struct hscx_hw *hx)
{
u8 val;
WriteHSCX(hx, IPAC_RAH2, 0xFF);
WriteHSCX(hx, IPAC_XBCH, 0x00);
WriteHSCX(hx, IPAC_RLCR, 0x00);
if (hx->ip->type & IPAC_TYPE_HSCX) {
WriteHSCX(hx, IPAC_CCR1, 0x85);
val = ReadHSCX(hx, HSCX_VSTR);
pr_debug("%s: HSCX VSTR %02x\n", hx->ip->name, val);
if (hx->bch.debug & DEBUG_HW)
pr_notice("%s: HSCX version %s\n", hx->ip->name,
HSCXVer[val & 0x0f]);
} else
WriteHSCX(hx, IPAC_CCR1, 0x82);
WriteHSCX(hx, IPAC_CCR2, 0x30);
WriteHSCX(hx, IPAC_XCCR, 0x07);
WriteHSCX(hx, IPAC_RCCR, 0x07);
}
static int
ipac_init(struct ipac_hw *ipac)
{
u8 val;
if (ipac->type & IPAC_TYPE_HSCX) {
hscx_init(&ipac->hscx[0]);
hscx_init(&ipac->hscx[1]);
val = ReadIPAC(ipac, IPAC_ID);
} else if (ipac->type & IPAC_TYPE_IPAC) {
hscx_init(&ipac->hscx[0]);
hscx_init(&ipac->hscx[1]);
WriteIPAC(ipac, IPAC_MASK, IPAC__ON);
val = ReadIPAC(ipac, IPAC_CONF);
/* conf is default 0, but can be overwritten by card setup */
pr_debug("%s: IPAC CONF %02x/%02x\n", ipac->name,
val, ipac->conf);
WriteIPAC(ipac, IPAC_CONF, ipac->conf);
val = ReadIPAC(ipac, IPAC_ID);
if (ipac->hscx[0].bch.debug & DEBUG_HW)
pr_notice("%s: IPAC Design ID %02x\n", ipac->name, val);
}
/* nothing special for IPACX to do here */
return isac_init(&ipac->isac);
}
static int
open_bchannel(struct ipac_hw *ipac, struct channel_req *rq)
{
struct bchannel *bch;
if (rq->adr.channel > 2)
return -EINVAL;
if (rq->protocol == ISDN_P_NONE)
return -EINVAL;
bch = &ipac->hscx[rq->adr.channel - 1].bch;
if (test_and_set_bit(FLG_OPEN, &bch->Flags))
return -EBUSY; /* b-channel can be only open once */
test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
bch->ch.protocol = rq->protocol;
rq->ch = &bch->ch;
return 0;
}
static int
channel_ctrl(struct ipac_hw *ipac, struct mISDN_ctrl_req *cq)
{
int ret = 0;
switch (cq->op) {
case MISDN_CTRL_GETOP:
cq->op = MISDN_CTRL_LOOP;
break;
case MISDN_CTRL_LOOP:
/* cq->channel: 0 disable, 1 B1 loop 2 B2 loop, 3 both */
if (cq->channel < 0 || cq->channel > 3) {
ret = -EINVAL;
break;
}
ret = ipac->ctrl(ipac, HW_TESTLOOP, cq->channel);
break;
default:
pr_info("%s: unknown CTRL OP %x\n", ipac->name, cq->op);
ret = -EINVAL;
break;
}
return ret;
}
static int
ipac_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
{
struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
struct dchannel *dch = container_of(dev, struct dchannel, dev);
struct isac_hw *isac = container_of(dch, struct isac_hw, dch);
struct ipac_hw *ipac = container_of(isac, struct ipac_hw, isac);
struct channel_req *rq;
int err = 0;
pr_debug("%s: DCTRL: %x %p\n", ipac->name, cmd, arg);
switch (cmd) {
case OPEN_CHANNEL:
rq = arg;
if (rq->protocol == ISDN_P_TE_S0)
err = open_dchannel(isac, rq);
else
err = open_bchannel(ipac, rq);
if (err)
break;
if (!try_module_get(ipac->owner))
pr_info("%s: cannot get module\n", ipac->name);
break;
case CLOSE_CHANNEL:
pr_debug("%s: dev(%d) close from %p\n", ipac->name,
dch->dev.id, __builtin_return_address(0));
module_put(ipac->owner);
break;
case CONTROL_CHANNEL:
err = channel_ctrl(ipac, arg);
break;
default:
pr_debug("%s: unknown DCTRL command %x\n", ipac->name, cmd);
return -EINVAL;
}
return err;
}
u32
mISDNipac_init(struct ipac_hw *ipac, void *hw)
{
u32 ret;
u8 i;
ipac->hw = hw;
if (ipac->isac.dch.debug & DEBUG_HW)
pr_notice("%s: ipac type %x\n", ipac->name, ipac->type);
if (ipac->type & IPAC_TYPE_HSCX) {
ipac->isac.type = IPAC_TYPE_ISAC;
ipac->hscx[0].off = 0;
ipac->hscx[1].off = 0x40;
ipac->hscx[0].fifo_size = 32;
ipac->hscx[1].fifo_size = 32;
} else if (ipac->type & IPAC_TYPE_IPAC) {
ipac->isac.type = IPAC_TYPE_IPAC | IPAC_TYPE_ISAC;
ipac->hscx[0].off = 0;
ipac->hscx[1].off = 0x40;
ipac->hscx[0].fifo_size = 64;
ipac->hscx[1].fifo_size = 64;
} else if (ipac->type & IPAC_TYPE_IPACX) {
ipac->isac.type = IPAC_TYPE_IPACX | IPAC_TYPE_ISACX;
ipac->hscx[0].off = IPACX_OFF_ICA;
ipac->hscx[1].off = IPACX_OFF_ICB;
ipac->hscx[0].fifo_size = 64;
ipac->hscx[1].fifo_size = 64;
} else
return 0;
mISDNisac_init(&ipac->isac, hw);
ipac->isac.dch.dev.D.ctrl = ipac_dctrl;
for (i = 0; i < 2; i++) {
ipac->hscx[i].bch.nr = i + 1;
set_channelmap(i + 1, ipac->isac.dch.dev.channelmap);
list_add(&ipac->hscx[i].bch.ch.list,
&ipac->isac.dch.dev.bchannels);
mISDN_initbchannel(&ipac->hscx[i].bch, MAX_DATA_MEM);
ipac->hscx[i].bch.ch.nr = i + 1;
ipac->hscx[i].bch.ch.send = &hscx_l2l1;
ipac->hscx[i].bch.ch.ctrl = hscx_bctrl;
ipac->hscx[i].bch.hw = hw;
ipac->hscx[i].ip = ipac;
/* default values for IOM time slots
* can be overwriten by card */
ipac->hscx[i].slot = (i == 0) ? 0x2f : 0x03;
}
ipac->init = ipac_init;
ipac->release = free_ipac;
ret = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
(1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
return ret;
}
EXPORT_SYMBOL(mISDNipac_init);
static int __init
isac_mod_init(void)
{
pr_notice("mISDNipac module version %s\n", ISAC_REV);
return 0;
}
static void __exit
isac_mod_cleanup(void)
{
pr_notice("mISDNipac module unloaded\n");
}
module_init(isac_mod_init);
module_exit(isac_mod_cleanup);
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