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linux/drivers/isdn/hardware/mISDN/mISDNisar.c
Gustavo A. R. Silva d287c50243 isdn: mark expected switch fall-throughs 
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Warning level 2 was used: -Wimplicit-fallthrough=2

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-04 22:17:32 +09:00

1709 lines
43 KiB
C
Raw Blame History

/*
* mISDNisar.c ISAR (Siemens PSB 7110) specific functions
*
* 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.
*
*/
/* define this to enable static debug messages, if you kernel supports
* dynamic debugging, you should use debugfs for this
*/
/* #define DEBUG */
#include <linux/gfp.h>
#include <linux/delay.h>
#include <linux/vmalloc.h>
#include <linux/mISDNhw.h>
#include <linux/module.h>
#include "isar.h"
#define ISAR_REV "2.1"
MODULE_AUTHOR("Karsten Keil");
MODULE_LICENSE("GPL v2");
MODULE_VERSION(ISAR_REV);
#define DEBUG_HW_FIRMWARE_FIFO 0x10000
static const u8 faxmodulation_s[] = "3,24,48,72,73,74,96,97,98,121,122,145,146";
static const u8 faxmodulation[] = {3, 24, 48, 72, 73, 74, 96, 97, 98, 121,
122, 145, 146};
#define FAXMODCNT 13
static void isar_setup(struct isar_hw *);
static inline int
waitforHIA(struct isar_hw *isar, int timeout)
{
int t = timeout;
u8 val = isar->read_reg(isar->hw, ISAR_HIA);
while ((val & 1) && t) {
udelay(1);
t--;
val = isar->read_reg(isar->hw, ISAR_HIA);
}
pr_debug("%s: HIA after %dus\n", isar->name, timeout - t);
return timeout;
}
/*
* send msg to ISAR mailbox
* if msg is NULL use isar->buf
*/
static int
send_mbox(struct isar_hw *isar, u8 his, u8 creg, u8 len, u8 *msg)
{
if (!waitforHIA(isar, 1000))
return 0;
pr_debug("send_mbox(%02x,%02x,%d)\n", his, creg, len);
isar->write_reg(isar->hw, ISAR_CTRL_H, creg);
isar->write_reg(isar->hw, ISAR_CTRL_L, len);
isar->write_reg(isar->hw, ISAR_WADR, 0);
if (!msg)
msg = isar->buf;
if (msg && len) {
isar->write_fifo(isar->hw, ISAR_MBOX, msg, len);
if (isar->ch[0].bch.debug & DEBUG_HW_BFIFO) {
int l = 0;
while (l < (int)len) {
hex_dump_to_buffer(msg + l, len - l, 32, 1,
isar->log, 256, 1);
pr_debug("%s: %s %02x: %s\n", isar->name,
__func__, l, isar->log);
l += 32;
}
}
}
isar->write_reg(isar->hw, ISAR_HIS, his);
waitforHIA(isar, 1000);
return 1;
}
/*
* receive message from ISAR mailbox
* if msg is NULL use isar->buf
*/
static void
rcv_mbox(struct isar_hw *isar, u8 *msg)
{
if (!msg)
msg = isar->buf;
isar->write_reg(isar->hw, ISAR_RADR, 0);
if (msg && isar->clsb) {
isar->read_fifo(isar->hw, ISAR_MBOX, msg, isar->clsb);
if (isar->ch[0].bch.debug & DEBUG_HW_BFIFO) {
int l = 0;
while (l < (int)isar->clsb) {
hex_dump_to_buffer(msg + l, isar->clsb - l, 32,
1, isar->log, 256, 1);
pr_debug("%s: %s %02x: %s\n", isar->name,
__func__, l, isar->log);
l += 32;
}
}
}
isar->write_reg(isar->hw, ISAR_IIA, 0);
}
static inline void
get_irq_infos(struct isar_hw *isar)
{
isar->iis = isar->read_reg(isar->hw, ISAR_IIS);
isar->cmsb = isar->read_reg(isar->hw, ISAR_CTRL_H);
isar->clsb = isar->read_reg(isar->hw, ISAR_CTRL_L);
pr_debug("%s: rcv_mbox(%02x,%02x,%d)\n", isar->name,
isar->iis, isar->cmsb, isar->clsb);
}
/*
* poll answer message from ISAR mailbox
* should be used only with ISAR IRQs disabled before DSP was started
*
*/
static int
poll_mbox(struct isar_hw *isar, int maxdelay)
{
int t = maxdelay;
u8 irq;
irq = isar->read_reg(isar->hw, ISAR_IRQBIT);
while (t && !(irq & ISAR_IRQSTA)) {
udelay(1);
t--;
}
if (t) {
get_irq_infos(isar);
rcv_mbox(isar, NULL);
}
pr_debug("%s: pulled %d bytes after %d us\n",
isar->name, isar->clsb, maxdelay - t);
return t;
}
static int
ISARVersion(struct isar_hw *isar)
{
int ver;
/* disable ISAR IRQ */
isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
isar->buf[0] = ISAR_MSG_HWVER;
isar->buf[1] = 0;
isar->buf[2] = 1;
if (!send_mbox(isar, ISAR_HIS_VNR, 0, 3, NULL))
return -1;
if (!poll_mbox(isar, 1000))
return -2;
if (isar->iis == ISAR_IIS_VNR) {
if (isar->clsb == 1) {
ver = isar->buf[0] & 0xf;
return ver;
}
return -3;
}
return -4;
}
static int
load_firmware(struct isar_hw *isar, const u8 *buf, int size)
{
u32 saved_debug = isar->ch[0].bch.debug;
int ret, cnt;
u8 nom, noc;
u16 left, val, *sp = (u16 *)buf;
u8 *mp;
u_long flags;
struct {
u16 sadr;
u16 len;
u16 d_key;
} blk_head;
if (1 != isar->version) {
pr_err("%s: ISAR wrong version %d firmware download aborted\n",
isar->name, isar->version);
return -EINVAL;
}
if (!(saved_debug & DEBUG_HW_FIRMWARE_FIFO))
isar->ch[0].bch.debug &= ~DEBUG_HW_BFIFO;
pr_debug("%s: load firmware %d words (%d bytes)\n",
isar->name, size / 2, size);
cnt = 0;
size /= 2;
/* disable ISAR IRQ */
spin_lock_irqsave(isar->hwlock, flags);
isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
spin_unlock_irqrestore(isar->hwlock, flags);
while (cnt < size) {
blk_head.sadr = le16_to_cpu(*sp++);
blk_head.len = le16_to_cpu(*sp++);
blk_head.d_key = le16_to_cpu(*sp++);
cnt += 3;
pr_debug("ISAR firmware block (%#x,%d,%#x)\n",
blk_head.sadr, blk_head.len, blk_head.d_key & 0xff);
left = blk_head.len;
if (cnt + left > size) {
pr_info("%s: firmware error have %d need %d words\n",
isar->name, size, cnt + left);
ret = -EINVAL;
goto reterrflg;
}
spin_lock_irqsave(isar->hwlock, flags);
if (!send_mbox(isar, ISAR_HIS_DKEY, blk_head.d_key & 0xff,
0, NULL)) {
pr_info("ISAR send_mbox dkey failed\n");
ret = -ETIME;
goto reterror;
}
if (!poll_mbox(isar, 1000)) {
pr_warning("ISAR poll_mbox dkey failed\n");
ret = -ETIME;
goto reterror;
}
spin_unlock_irqrestore(isar->hwlock, flags);
if ((isar->iis != ISAR_IIS_DKEY) || isar->cmsb || isar->clsb) {
pr_info("ISAR wrong dkey response (%x,%x,%x)\n",
isar->iis, isar->cmsb, isar->clsb);
ret = 1;
goto reterrflg;
}
while (left > 0) {
if (left > 126)
noc = 126;
else
noc = left;
nom = (2 * noc) + 3;
mp = isar->buf;
/* the ISAR is big endian */
*mp++ = blk_head.sadr >> 8;
*mp++ = blk_head.sadr & 0xFF;
left -= noc;
cnt += noc;
*mp++ = noc;
pr_debug("%s: load %3d words at %04x\n", isar->name,
noc, blk_head.sadr);
blk_head.sadr += noc;
while (noc) {
val = le16_to_cpu(*sp++);
*mp++ = val >> 8;
*mp++ = val & 0xFF;
noc--;
}
spin_lock_irqsave(isar->hwlock, flags);
if (!send_mbox(isar, ISAR_HIS_FIRM, 0, nom, NULL)) {
pr_info("ISAR send_mbox prog failed\n");
ret = -ETIME;
goto reterror;
}
if (!poll_mbox(isar, 1000)) {
pr_info("ISAR poll_mbox prog failed\n");
ret = -ETIME;
goto reterror;
}
spin_unlock_irqrestore(isar->hwlock, flags);
if ((isar->iis != ISAR_IIS_FIRM) ||
isar->cmsb || isar->clsb) {
pr_info("ISAR wrong prog response (%x,%x,%x)\n",
isar->iis, isar->cmsb, isar->clsb);
ret = -EIO;
goto reterrflg;
}
}
pr_debug("%s: ISAR firmware block %d words loaded\n",
isar->name, blk_head.len);
}
isar->ch[0].bch.debug = saved_debug;
/* 10ms delay */
cnt = 10;
while (cnt--)
mdelay(1);
isar->buf[0] = 0xff;
isar->buf[1] = 0xfe;
isar->bstat = 0;
spin_lock_irqsave(isar->hwlock, flags);
if (!send_mbox(isar, ISAR_HIS_STDSP, 0, 2, NULL)) {
pr_info("ISAR send_mbox start dsp failed\n");
ret = -ETIME;
goto reterror;
}
if (!poll_mbox(isar, 1000)) {
pr_info("ISAR poll_mbox start dsp failed\n");
ret = -ETIME;
goto reterror;
}
if ((isar->iis != ISAR_IIS_STDSP) || isar->cmsb || isar->clsb) {
pr_info("ISAR wrong start dsp response (%x,%x,%x)\n",
isar->iis, isar->cmsb, isar->clsb);
ret = -EIO;
goto reterror;
} else
pr_debug("%s: ISAR start dsp success\n", isar->name);
/* NORMAL mode entered */
/* Enable IRQs of ISAR */
isar->write_reg(isar->hw, ISAR_IRQBIT, ISAR_IRQSTA);
spin_unlock_irqrestore(isar->hwlock, flags);
cnt = 1000; /* max 1s */
while ((!isar->bstat) && cnt) {
mdelay(1);
cnt--;
}
if (!cnt) {
pr_info("ISAR no general status event received\n");
ret = -ETIME;
goto reterrflg;
} else
pr_debug("%s: ISAR general status event %x\n",
isar->name, isar->bstat);
/* 10ms delay */
cnt = 10;
while (cnt--)
mdelay(1);
isar->iis = 0;
spin_lock_irqsave(isar->hwlock, flags);
if (!send_mbox(isar, ISAR_HIS_DIAG, ISAR_CTRL_STST, 0, NULL)) {
pr_info("ISAR send_mbox self tst failed\n");
ret = -ETIME;
goto reterror;
}
spin_unlock_irqrestore(isar->hwlock, flags);
cnt = 10000; /* max 100 ms */
while ((isar->iis != ISAR_IIS_DIAG) && cnt) {
udelay(10);
cnt--;
}
mdelay(1);
if (!cnt) {
pr_info("ISAR no self tst response\n");
ret = -ETIME;
goto reterrflg;
}
if ((isar->cmsb == ISAR_CTRL_STST) && (isar->clsb == 1)
&& (isar->buf[0] == 0))
pr_debug("%s: ISAR selftest OK\n", isar->name);
else {
pr_info("ISAR selftest not OK %x/%x/%x\n",
isar->cmsb, isar->clsb, isar->buf[0]);
ret = -EIO;
goto reterrflg;
}
spin_lock_irqsave(isar->hwlock, flags);
isar->iis = 0;
if (!send_mbox(isar, ISAR_HIS_DIAG, ISAR_CTRL_SWVER, 0, NULL)) {
pr_info("ISAR RQST SVN failed\n");
ret = -ETIME;
goto reterror;
}
spin_unlock_irqrestore(isar->hwlock, flags);
cnt = 30000; /* max 300 ms */
while ((isar->iis != ISAR_IIS_DIAG) && cnt) {
udelay(10);
cnt--;
}
mdelay(1);
if (!cnt) {
pr_info("ISAR no SVN response\n");
ret = -ETIME;
goto reterrflg;
} else {
if ((isar->cmsb == ISAR_CTRL_SWVER) && (isar->clsb == 1)) {
pr_notice("%s: ISAR software version %#x\n",
isar->name, isar->buf[0]);
} else {
pr_info("%s: ISAR wrong swver response (%x,%x)"
" cnt(%d)\n", isar->name, isar->cmsb,
isar->clsb, cnt);
ret = -EIO;
goto reterrflg;
}
}
spin_lock_irqsave(isar->hwlock, flags);
isar_setup(isar);
spin_unlock_irqrestore(isar->hwlock, flags);
ret = 0;
reterrflg:
spin_lock_irqsave(isar->hwlock, flags);
reterror:
isar->ch[0].bch.debug = saved_debug;
if (ret)
/* disable ISAR IRQ */
isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
spin_unlock_irqrestore(isar->hwlock, flags);
return ret;
}
static inline void
deliver_status(struct isar_ch *ch, int status)
{
pr_debug("%s: HL->LL FAXIND %x\n", ch->is->name, status);
_queue_data(&ch->bch.ch, PH_CONTROL_IND, status, 0, NULL, GFP_ATOMIC);
}
static inline void
isar_rcv_frame(struct isar_ch *ch)
{
u8 *ptr;
int maxlen;
if (!ch->is->clsb) {
pr_debug("%s; ISAR zero len frame\n", ch->is->name);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
return;
}
if (test_bit(FLG_RX_OFF, &ch->bch.Flags)) {
ch->bch.dropcnt += ch->is->clsb;
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
return;
}
switch (ch->bch.state) {
case ISDN_P_NONE:
pr_debug("%s: ISAR protocol 0 spurious IIS_RDATA %x/%x/%x\n",
ch->is->name, ch->is->iis, ch->is->cmsb, ch->is->clsb);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
break;
case ISDN_P_B_RAW:
case ISDN_P_B_L2DTMF:
case ISDN_P_B_MODEM_ASYNC:
maxlen = bchannel_get_rxbuf(&ch->bch, ch->is->clsb);
if (maxlen < 0) {
pr_warning("%s.B%d: No bufferspace for %d bytes\n",
ch->is->name, ch->bch.nr, ch->is->clsb);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
break;
}
rcv_mbox(ch->is, skb_put(ch->bch.rx_skb, ch->is->clsb));
recv_Bchannel(&ch->bch, 0, false);
break;
case ISDN_P_B_HDLC:
maxlen = bchannel_get_rxbuf(&ch->bch, ch->is->clsb);
if (maxlen < 0) {
pr_warning("%s.B%d: No bufferspace for %d bytes\n",
ch->is->name, ch->bch.nr, ch->is->clsb);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
break;
}
if (ch->is->cmsb & HDLC_ERROR) {
pr_debug("%s: ISAR frame error %x len %d\n",
ch->is->name, ch->is->cmsb, ch->is->clsb);
#ifdef ERROR_STATISTIC
if (ch->is->cmsb & HDLC_ERR_RER)
ch->bch.err_inv++;
if (ch->is->cmsb & HDLC_ERR_CER)
ch->bch.err_crc++;
#endif
skb_trim(ch->bch.rx_skb, 0);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
break;
}
if (ch->is->cmsb & HDLC_FSD)
skb_trim(ch->bch.rx_skb, 0);
ptr = skb_put(ch->bch.rx_skb, ch->is->clsb);
rcv_mbox(ch->is, ptr);
if (ch->is->cmsb & HDLC_FED) {
if (ch->bch.rx_skb->len < 3) { /* last 2 are the FCS */
pr_debug("%s: ISAR frame to short %d\n",
ch->is->name, ch->bch.rx_skb->len);
skb_trim(ch->bch.rx_skb, 0);
break;
}
skb_trim(ch->bch.rx_skb, ch->bch.rx_skb->len - 2);
recv_Bchannel(&ch->bch, 0, false);
}
break;
case ISDN_P_B_T30_FAX:
if (ch->state != STFAX_ACTIV) {
pr_debug("%s: isar_rcv_frame: not ACTIV\n",
ch->is->name);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
if (ch->bch.rx_skb)
skb_trim(ch->bch.rx_skb, 0);
break;
}
if (!ch->bch.rx_skb) {
ch->bch.rx_skb = mI_alloc_skb(ch->bch.maxlen,
GFP_ATOMIC);
if (unlikely(!ch->bch.rx_skb)) {
pr_info("%s: B receive out of memory\n",
__func__);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
break;
}
}
if (ch->cmd == PCTRL_CMD_FRM) {
rcv_mbox(ch->is, skb_put(ch->bch.rx_skb, ch->is->clsb));
pr_debug("%s: isar_rcv_frame: %d\n",
ch->is->name, ch->bch.rx_skb->len);
if (ch->is->cmsb & SART_NMD) { /* ABORT */
pr_debug("%s: isar_rcv_frame: no more data\n",
ch->is->name);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
send_mbox(ch->is, SET_DPS(ch->dpath) |
ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC,
0, NULL);
ch->state = STFAX_ESCAPE;
/* set_skb_flag(skb, DF_NOMOREDATA); */
}
recv_Bchannel(&ch->bch, 0, false);
if (ch->is->cmsb & SART_NMD)
deliver_status(ch, HW_MOD_NOCARR);
break;
}
if (ch->cmd != PCTRL_CMD_FRH) {
pr_debug("%s: isar_rcv_frame: unknown fax mode %x\n",
ch->is->name, ch->cmd);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
if (ch->bch.rx_skb)
skb_trim(ch->bch.rx_skb, 0);
break;
}
/* PCTRL_CMD_FRH */
if ((ch->bch.rx_skb->len + ch->is->clsb) >
(ch->bch.maxlen + 2)) {
pr_info("%s: %s incoming packet too large\n",
ch->is->name, __func__);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
skb_trim(ch->bch.rx_skb, 0);
break;
} else if (ch->is->cmsb & HDLC_ERROR) {
pr_info("%s: ISAR frame error %x len %d\n",
ch->is->name, ch->is->cmsb, ch->is->clsb);
skb_trim(ch->bch.rx_skb, 0);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
break;
}
if (ch->is->cmsb & HDLC_FSD)
skb_trim(ch->bch.rx_skb, 0);
ptr = skb_put(ch->bch.rx_skb, ch->is->clsb);
rcv_mbox(ch->is, ptr);
if (ch->is->cmsb & HDLC_FED) {
if (ch->bch.rx_skb->len < 3) { /* last 2 are the FCS */
pr_info("%s: ISAR frame to short %d\n",
ch->is->name, ch->bch.rx_skb->len);
skb_trim(ch->bch.rx_skb, 0);
break;
}
skb_trim(ch->bch.rx_skb, ch->bch.rx_skb->len - 2);
recv_Bchannel(&ch->bch, 0, false);
}
if (ch->is->cmsb & SART_NMD) { /* ABORT */
pr_debug("%s: isar_rcv_frame: no more data\n",
ch->is->name);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
if (ch->bch.rx_skb)
skb_trim(ch->bch.rx_skb, 0);
send_mbox(ch->is, SET_DPS(ch->dpath) |
ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC, 0, NULL);
ch->state = STFAX_ESCAPE;
deliver_status(ch, HW_MOD_NOCARR);
}
break;
default:
pr_info("isar_rcv_frame protocol (%x)error\n", ch->bch.state);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
break;
}
}
static void
isar_fill_fifo(struct isar_ch *ch)
{
int count;
u8 msb;
u8 *ptr;
pr_debug("%s: ch%d tx_skb %d tx_idx %d\n", ch->is->name, ch->bch.nr,
ch->bch.tx_skb ? ch->bch.tx_skb->len : -1, ch->bch.tx_idx);
if (!(ch->is->bstat &
(ch->dpath == 1 ? BSTAT_RDM1 : BSTAT_RDM2)))
return;
if (!ch->bch.tx_skb) {
if (!test_bit(FLG_TX_EMPTY, &ch->bch.Flags) ||
(ch->bch.state != ISDN_P_B_RAW))
return;
count = ch->mml;
/* use the card buffer */
memset(ch->is->buf, ch->bch.fill[0], count);
send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
0, count, ch->is->buf);
return;
}
count = ch->bch.tx_skb->len - ch->bch.tx_idx;
if (count <= 0)
return;
if (count > ch->mml) {
msb = 0;
count = ch->mml;
} else {
msb = HDLC_FED;
}
ptr = ch->bch.tx_skb->data + ch->bch.tx_idx;
if (!ch->bch.tx_idx) {
pr_debug("%s: frame start\n", ch->is->name);
if ((ch->bch.state == ISDN_P_B_T30_FAX) &&
(ch->cmd == PCTRL_CMD_FTH)) {
if (count > 1) {
if ((ptr[0] == 0xff) && (ptr[1] == 0x13)) {
/* last frame */
test_and_set_bit(FLG_LASTDATA,
&ch->bch.Flags);
pr_debug("%s: set LASTDATA\n",
ch->is->name);
if (msb == HDLC_FED)
test_and_set_bit(FLG_DLEETX,
&ch->bch.Flags);
}
}
}
msb |= HDLC_FST;
}
ch->bch.tx_idx += count;
switch (ch->bch.state) {
case ISDN_P_NONE:
pr_info("%s: wrong protocol 0\n", __func__);
break;
case ISDN_P_B_RAW:
case ISDN_P_B_L2DTMF:
case ISDN_P_B_MODEM_ASYNC:
send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
0, count, ptr);
break;
case ISDN_P_B_HDLC:
send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
msb, count, ptr);
break;
case ISDN_P_B_T30_FAX:
if (ch->state != STFAX_ACTIV)
pr_debug("%s: not ACTIV\n", ch->is->name);
else if (ch->cmd == PCTRL_CMD_FTH)
send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
msb, count, ptr);
else if (ch->cmd == PCTRL_CMD_FTM)
send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
0, count, ptr);
else
pr_debug("%s: not FTH/FTM\n", ch->is->name);
break;
default:
pr_info("%s: protocol(%x) error\n",
__func__, ch->bch.state);
break;
}
}
static inline struct isar_ch *
sel_bch_isar(struct isar_hw *isar, u8 dpath)
{
struct isar_ch *base = &isar->ch[0];
if ((!dpath) || (dpath > 2))
return NULL;
if (base->dpath == dpath)
return base;
base++;
if (base->dpath == dpath)
return base;
return NULL;
}
static void
send_next(struct isar_ch *ch)
{
pr_debug("%s: %s ch%d tx_skb %d tx_idx %d\n", ch->is->name, __func__,
ch->bch.nr, ch->bch.tx_skb ? ch->bch.tx_skb->len : -1,
ch->bch.tx_idx);
if (ch->bch.state == ISDN_P_B_T30_FAX) {
if (ch->cmd == PCTRL_CMD_FTH) {
if (test_bit(FLG_LASTDATA, &ch->bch.Flags)) {
pr_debug("set NMD_DATA\n");
test_and_set_bit(FLG_NMD_DATA, &ch->bch.Flags);
}
} else if (ch->cmd == PCTRL_CMD_FTM) {
if (test_bit(FLG_DLEETX, &ch->bch.Flags)) {
test_and_set_bit(FLG_LASTDATA, &ch->bch.Flags);
test_and_set_bit(FLG_NMD_DATA, &ch->bch.Flags);
}
}
}
if (ch->bch.tx_skb)
dev_kfree_skb(ch->bch.tx_skb);
if (get_next_bframe(&ch->bch)) {
isar_fill_fifo(ch);
test_and_clear_bit(FLG_TX_EMPTY, &ch->bch.Flags);
} else if (test_bit(FLG_TX_EMPTY, &ch->bch.Flags)) {
isar_fill_fifo(ch);
} else {
if (test_and_clear_bit(FLG_DLEETX, &ch->bch.Flags)) {
if (test_and_clear_bit(FLG_LASTDATA,
&ch->bch.Flags)) {
if (test_and_clear_bit(FLG_NMD_DATA,
&ch->bch.Flags)) {
u8 zd = 0;
send_mbox(ch->is, SET_DPS(ch->dpath) |
ISAR_HIS_SDATA, 0x01, 1, &zd);
}
test_and_set_bit(FLG_LL_OK, &ch->bch.Flags);
} else {
deliver_status(ch, HW_MOD_CONNECT);
}
} else if (test_bit(FLG_FILLEMPTY, &ch->bch.Flags)) {
test_and_set_bit(FLG_TX_EMPTY, &ch->bch.Flags);
}
}
}
static void
check_send(struct isar_hw *isar, u8 rdm)
{
struct isar_ch *ch;
pr_debug("%s: rdm %x\n", isar->name, rdm);
if (rdm & BSTAT_RDM1) {
ch = sel_bch_isar(isar, 1);
if (ch && test_bit(FLG_ACTIVE, &ch->bch.Flags)) {
if (ch->bch.tx_skb && (ch->bch.tx_skb->len >
ch->bch.tx_idx))
isar_fill_fifo(ch);
else
send_next(ch);
}
}
if (rdm & BSTAT_RDM2) {
ch = sel_bch_isar(isar, 2);
if (ch && test_bit(FLG_ACTIVE, &ch->bch.Flags)) {
if (ch->bch.tx_skb && (ch->bch.tx_skb->len >
ch->bch.tx_idx))
isar_fill_fifo(ch);
else
send_next(ch);
}
}
}
const char *dmril[] = {"NO SPEED", "1200/75", "NODEF2", "75/1200", "NODEF4",
"300", "600", "1200", "2400", "4800", "7200",
"9600nt", "9600t", "12000", "14400", "WRONG"};
const char *dmrim[] = {"NO MOD", "NO DEF", "V32/V32b", "V22", "V21",
"Bell103", "V23", "Bell202", "V17", "V29", "V27ter"};
static void
isar_pump_status_rsp(struct isar_ch *ch) {
u8 ril = ch->is->buf[0];
u8 rim;
if (!test_and_clear_bit(ISAR_RATE_REQ, &ch->is->Flags))
return;
if (ril > 14) {
pr_info("%s: wrong pstrsp ril=%d\n", ch->is->name, ril);
ril = 15;
}
switch (ch->is->buf[1]) {
case 0:
rim = 0;
break;
case 0x20:
rim = 2;
break;
case 0x40:
rim = 3;
break;
case 0x41:
rim = 4;
break;
case 0x51:
rim = 5;
break;
case 0x61:
rim = 6;
break;
case 0x71:
rim = 7;
break;
case 0x82:
rim = 8;
break;
case 0x92:
rim = 9;
break;
case 0xa2:
rim = 10;
break;
default:
rim = 1;
break;
}
sprintf(ch->conmsg, "%s %s", dmril[ril], dmrim[rim]);
pr_debug("%s: pump strsp %s\n", ch->is->name, ch->conmsg);
}
static void
isar_pump_statev_modem(struct isar_ch *ch, u8 devt) {
u8 dps = SET_DPS(ch->dpath);
switch (devt) {
case PSEV_10MS_TIMER:
pr_debug("%s: pump stev TIMER\n", ch->is->name);
break;
case PSEV_CON_ON:
pr_debug("%s: pump stev CONNECT\n", ch->is->name);
deliver_status(ch, HW_MOD_CONNECT);
break;
case PSEV_CON_OFF:
pr_debug("%s: pump stev NO CONNECT\n", ch->is->name);
send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
deliver_status(ch, HW_MOD_NOCARR);
break;
case PSEV_V24_OFF:
pr_debug("%s: pump stev V24 OFF\n", ch->is->name);
break;
case PSEV_CTS_ON:
pr_debug("%s: pump stev CTS ON\n", ch->is->name);
break;
case PSEV_CTS_OFF:
pr_debug("%s pump stev CTS OFF\n", ch->is->name);
break;
case PSEV_DCD_ON:
pr_debug("%s: pump stev CARRIER ON\n", ch->is->name);
test_and_set_bit(ISAR_RATE_REQ, &ch->is->Flags);
send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
break;
case PSEV_DCD_OFF:
pr_debug("%s: pump stev CARRIER OFF\n", ch->is->name);
break;
case PSEV_DSR_ON:
pr_debug("%s: pump stev DSR ON\n", ch->is->name);
break;
case PSEV_DSR_OFF:
pr_debug("%s: pump stev DSR_OFF\n", ch->is->name);
break;
case PSEV_REM_RET:
pr_debug("%s: pump stev REMOTE RETRAIN\n", ch->is->name);
break;
case PSEV_REM_REN:
pr_debug("%s: pump stev REMOTE RENEGOTIATE\n", ch->is->name);
break;
case PSEV_GSTN_CLR:
pr_debug("%s: pump stev GSTN CLEAR\n", ch->is->name);
break;
default:
pr_info("u%s: unknown pump stev %x\n", ch->is->name, devt);
break;
}
}
static void
isar_pump_statev_fax(struct isar_ch *ch, u8 devt) {
u8 dps = SET_DPS(ch->dpath);
u8 p1;
switch (devt) {
case PSEV_10MS_TIMER:
pr_debug("%s: pump stev TIMER\n", ch->is->name);
break;
case PSEV_RSP_READY:
pr_debug("%s: pump stev RSP_READY\n", ch->is->name);
ch->state = STFAX_READY;
deliver_status(ch, HW_MOD_READY);
#ifdef AUTOCON
if (test_bit(BC_FLG_ORIG, &ch->bch.Flags))
isar_pump_cmd(bch, HW_MOD_FRH, 3);
else
isar_pump_cmd(bch, HW_MOD_FTH, 3);
#endif
break;
case PSEV_LINE_TX_H:
if (ch->state == STFAX_LINE) {
pr_debug("%s: pump stev LINE_TX_H\n", ch->is->name);
ch->state = STFAX_CONT;
send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
PCTRL_CMD_CONT, 0, NULL);
} else {
pr_debug("%s: pump stev LINE_TX_H wrong st %x\n",
ch->is->name, ch->state);
}
break;
case PSEV_LINE_RX_H:
if (ch->state == STFAX_LINE) {
pr_debug("%s: pump stev LINE_RX_H\n", ch->is->name);
ch->state = STFAX_CONT;
send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
PCTRL_CMD_CONT, 0, NULL);
} else {
pr_debug("%s: pump stev LINE_RX_H wrong st %x\n",
ch->is->name, ch->state);
}
break;
case PSEV_LINE_TX_B:
if (ch->state == STFAX_LINE) {
pr_debug("%s: pump stev LINE_TX_B\n", ch->is->name);
ch->state = STFAX_CONT;
send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
PCTRL_CMD_CONT, 0, NULL);
} else {
pr_debug("%s: pump stev LINE_TX_B wrong st %x\n",
ch->is->name, ch->state);
}
break;
case PSEV_LINE_RX_B:
if (ch->state == STFAX_LINE) {
pr_debug("%s: pump stev LINE_RX_B\n", ch->is->name);
ch->state = STFAX_CONT;
send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
PCTRL_CMD_CONT, 0, NULL);
} else {
pr_debug("%s: pump stev LINE_RX_B wrong st %x\n",
ch->is->name, ch->state);
}
break;
case PSEV_RSP_CONN:
if (ch->state == STFAX_CONT) {
pr_debug("%s: pump stev RSP_CONN\n", ch->is->name);
ch->state = STFAX_ACTIV;
test_and_set_bit(ISAR_RATE_REQ, &ch->is->Flags);
send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
if (ch->cmd == PCTRL_CMD_FTH) {
int delay = (ch->mod == 3) ? 1000 : 200;
/* 1s (200 ms) Flags before data */
if (test_and_set_bit(FLG_FTI_RUN,
&ch->bch.Flags))
del_timer(&ch->ftimer);
ch->ftimer.expires =
jiffies + ((delay * HZ) / 1000);
test_and_set_bit(FLG_LL_CONN,
&ch->bch.Flags);
add_timer(&ch->ftimer);
} else {
deliver_status(ch, HW_MOD_CONNECT);
}
} else {
pr_debug("%s: pump stev RSP_CONN wrong st %x\n",
ch->is->name, ch->state);
}
break;
case PSEV_FLAGS_DET:
pr_debug("%s: pump stev FLAGS_DET\n", ch->is->name);
break;
case PSEV_RSP_DISC:
pr_debug("%s: pump stev RSP_DISC state(%d)\n",
ch->is->name, ch->state);
if (ch->state == STFAX_ESCAPE) {
p1 = 5;
switch (ch->newcmd) {
case 0:
ch->state = STFAX_READY;
break;
case PCTRL_CMD_FTM:
p1 = 2;
/* fall through */
case PCTRL_CMD_FTH:
send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
PCTRL_CMD_SILON, 1, &p1);
ch->state = STFAX_SILDET;
break;
case PCTRL_CMD_FRH:
case PCTRL_CMD_FRM:
ch->mod = ch->newmod;
p1 = ch->newmod;
ch->newmod = 0;
ch->cmd = ch->newcmd;
ch->newcmd = 0;
send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
ch->cmd, 1, &p1);
ch->state = STFAX_LINE;
ch->try_mod = 3;
break;
default:
pr_debug("%s: RSP_DISC unknown newcmd %x\n",
ch->is->name, ch->newcmd);
break;
}
} else if (ch->state == STFAX_ACTIV) {
if (test_and_clear_bit(FLG_LL_OK, &ch->bch.Flags))
deliver_status(ch, HW_MOD_OK);
else if (ch->cmd == PCTRL_CMD_FRM)
deliver_status(ch, HW_MOD_NOCARR);
else
deliver_status(ch, HW_MOD_FCERROR);
ch->state = STFAX_READY;
} else if (ch->state != STFAX_SILDET) {
/* ignore in STFAX_SILDET */
ch->state = STFAX_READY;
deliver_status(ch, HW_MOD_FCERROR);
}
break;
case PSEV_RSP_SILDET:
pr_debug("%s: pump stev RSP_SILDET\n", ch->is->name);
if (ch->state == STFAX_SILDET) {
ch->mod = ch->newmod;
p1 = ch->newmod;
ch->newmod = 0;
ch->cmd = ch->newcmd;
ch->newcmd = 0;
send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
ch->cmd, 1, &p1);
ch->state = STFAX_LINE;
ch->try_mod = 3;
}
break;
case PSEV_RSP_SILOFF:
pr_debug("%s: pump stev RSP_SILOFF\n", ch->is->name);
break;
case PSEV_RSP_FCERR:
if (ch->state == STFAX_LINE) {
pr_debug("%s: pump stev RSP_FCERR try %d\n",
ch->is->name, ch->try_mod);
if (ch->try_mod--) {
send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
ch->cmd, 1, &ch->mod);
break;
}
}
pr_debug("%s: pump stev RSP_FCERR\n", ch->is->name);
ch->state = STFAX_ESCAPE;
send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC,
0, NULL);
deliver_status(ch, HW_MOD_FCERROR);
break;
default:
break;
}
}
void
mISDNisar_irq(struct isar_hw *isar)
{
struct isar_ch *ch;
get_irq_infos(isar);
switch (isar->iis & ISAR_IIS_MSCMSD) {
case ISAR_IIS_RDATA:
ch = sel_bch_isar(isar, isar->iis >> 6);
if (ch)
isar_rcv_frame(ch);
else {
pr_debug("%s: ISAR spurious IIS_RDATA %x/%x/%x\n",
isar->name, isar->iis, isar->cmsb,
isar->clsb);
isar->write_reg(isar->hw, ISAR_IIA, 0);
}
break;
case ISAR_IIS_GSTEV:
isar->write_reg(isar->hw, ISAR_IIA, 0);
isar->bstat |= isar->cmsb;
check_send(isar, isar->cmsb);
break;
case ISAR_IIS_BSTEV:
#ifdef ERROR_STATISTIC
ch = sel_bch_isar(isar, isar->iis >> 6);
if (ch) {
if (isar->cmsb == BSTEV_TBO)
ch->bch.err_tx++;
if (isar->cmsb == BSTEV_RBO)
ch->bch.err_rdo++;
}
#endif
pr_debug("%s: Buffer STEV dpath%d msb(%x)\n",
isar->name, isar->iis >> 6, isar->cmsb);
isar->write_reg(isar->hw, ISAR_IIA, 0);
break;
case ISAR_IIS_PSTEV:
ch = sel_bch_isar(isar, isar->iis >> 6);
if (ch) {
rcv_mbox(isar, NULL);
if (ch->bch.state == ISDN_P_B_MODEM_ASYNC)
isar_pump_statev_modem(ch, isar->cmsb);
else if (ch->bch.state == ISDN_P_B_T30_FAX)
isar_pump_statev_fax(ch, isar->cmsb);
else if (ch->bch.state == ISDN_P_B_RAW) {
int tt;
tt = isar->cmsb | 0x30;
if (tt == 0x3e)
tt = '*';
else if (tt == 0x3f)
tt = '#';
else if (tt > '9')
tt += 7;
tt |= DTMF_TONE_VAL;
_queue_data(&ch->bch.ch, PH_CONTROL_IND,
MISDN_ID_ANY, sizeof(tt), &tt,
GFP_ATOMIC);
} else
pr_debug("%s: ISAR IIS_PSTEV pm %d sta %x\n",
isar->name, ch->bch.state,
isar->cmsb);
} else {
pr_debug("%s: ISAR spurious IIS_PSTEV %x/%x/%x\n",
isar->name, isar->iis, isar->cmsb,
isar->clsb);
isar->write_reg(isar->hw, ISAR_IIA, 0);
}
break;
case ISAR_IIS_PSTRSP:
ch = sel_bch_isar(isar, isar->iis >> 6);
if (ch) {
rcv_mbox(isar, NULL);
isar_pump_status_rsp(ch);
} else {
pr_debug("%s: ISAR spurious IIS_PSTRSP %x/%x/%x\n",
isar->name, isar->iis, isar->cmsb,
isar->clsb);
isar->write_reg(isar->hw, ISAR_IIA, 0);
}
break;
case ISAR_IIS_DIAG:
case ISAR_IIS_BSTRSP:
case ISAR_IIS_IOM2RSP:
rcv_mbox(isar, NULL);
break;
case ISAR_IIS_INVMSG:
rcv_mbox(isar, NULL);
pr_debug("%s: invalid msg his:%x\n", isar->name, isar->cmsb);
break;
default:
rcv_mbox(isar, NULL);
pr_debug("%s: unhandled msg iis(%x) ctrl(%x/%x)\n",
isar->name, isar->iis, isar->cmsb, isar->clsb);
break;
}
}
EXPORT_SYMBOL(mISDNisar_irq);
static void
ftimer_handler(struct timer_list *t)
{
struct isar_ch *ch = from_timer(ch, t, ftimer);
pr_debug("%s: ftimer flags %lx\n", ch->is->name, ch->bch.Flags);
test_and_clear_bit(FLG_FTI_RUN, &ch->bch.Flags);
if (test_and_clear_bit(FLG_LL_CONN, &ch->bch.Flags))
deliver_status(ch, HW_MOD_CONNECT);
}
static void
setup_pump(struct isar_ch *ch) {
u8 dps = SET_DPS(ch->dpath);
u8 ctrl, param[6];
switch (ch->bch.state) {
case ISDN_P_NONE:
case ISDN_P_B_RAW:
case ISDN_P_B_HDLC:
send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, PMOD_BYPASS, 0, NULL);
break;
case ISDN_P_B_L2DTMF:
if (test_bit(FLG_DTMFSEND, &ch->bch.Flags)) {
param[0] = 5; /* TOA 5 db */
send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG,
PMOD_DTMF_TRANS, 1, param);
} else {
param[0] = 40; /* REL -46 dbm */
send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG,
PMOD_DTMF, 1, param);
}
/* fall through */
case ISDN_P_B_MODEM_ASYNC:
ctrl = PMOD_DATAMODEM;
if (test_bit(FLG_ORIGIN, &ch->bch.Flags)) {
ctrl |= PCTRL_ORIG;
param[5] = PV32P6_CTN;
} else {
param[5] = PV32P6_ATN;
}
param[0] = 6; /* 6 db */
param[1] = PV32P2_V23R | PV32P2_V22A | PV32P2_V22B |
PV32P2_V22C | PV32P2_V21 | PV32P2_BEL;
param[2] = PV32P3_AMOD | PV32P3_V32B | PV32P3_V23B;
param[3] = PV32P4_UT144;
param[4] = PV32P5_UT144;
send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, ctrl, 6, param);
break;
case ISDN_P_B_T30_FAX:
ctrl = PMOD_FAX;
if (test_bit(FLG_ORIGIN, &ch->bch.Flags)) {
ctrl |= PCTRL_ORIG;
param[1] = PFAXP2_CTN;
} else {
param[1] = PFAXP2_ATN;
}
param[0] = 6; /* 6 db */
send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, ctrl, 2, param);
ch->state = STFAX_NULL;
ch->newcmd = 0;
ch->newmod = 0;
test_and_set_bit(FLG_FTI_RUN, &ch->bch.Flags);
break;
}
udelay(1000);
send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
udelay(1000);
}
static void
setup_sart(struct isar_ch *ch) {
u8 dps = SET_DPS(ch->dpath);
u8 ctrl, param[2] = {0, 0};
switch (ch->bch.state) {
case ISDN_P_NONE:
send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_DISABLE,
0, NULL);
break;
case ISDN_P_B_RAW:
case ISDN_P_B_L2DTMF:
send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_BINARY,
2, param);
break;
case ISDN_P_B_HDLC:
case ISDN_P_B_T30_FAX:
send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_HDLC,
1, param);
break;
case ISDN_P_B_MODEM_ASYNC:
ctrl = SMODE_V14 | SCTRL_HDMC_BOTH;
param[0] = S_P1_CHS_8;
param[1] = S_P2_BFT_DEF;
send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, ctrl, 2, param);
break;
}
udelay(1000);
send_mbox(ch->is, dps | ISAR_HIS_BSTREQ, 0, 0, NULL);
udelay(1000);
}
static void
setup_iom2(struct isar_ch *ch) {
u8 dps = SET_DPS(ch->dpath);
u8 cmsb = IOM_CTRL_ENA, msg[5] = {IOM_P1_TXD, 0, 0, 0, 0};
if (ch->bch.nr == 2) {
msg[1] = 1;
msg[3] = 1;
}
switch (ch->bch.state) {
case ISDN_P_NONE:
cmsb = 0;
/* dummy slot */
msg[1] = ch->dpath + 2;
msg[3] = ch->dpath + 2;
break;
case ISDN_P_B_RAW:
case ISDN_P_B_HDLC:
break;
case ISDN_P_B_MODEM_ASYNC:
case ISDN_P_B_T30_FAX:
cmsb |= IOM_CTRL_RCV;
/* fall through */
case ISDN_P_B_L2DTMF:
if (test_bit(FLG_DTMFSEND, &ch->bch.Flags))
cmsb |= IOM_CTRL_RCV;
cmsb |= IOM_CTRL_ALAW;
break;
}
send_mbox(ch->is, dps | ISAR_HIS_IOM2CFG, cmsb, 5, msg);
udelay(1000);
send_mbox(ch->is, dps | ISAR_HIS_IOM2REQ, 0, 0, NULL);
udelay(1000);
}
static int
modeisar(struct isar_ch *ch, u32 bprotocol)
{
/* Here we are selecting the best datapath for requested protocol */
if (ch->bch.state == ISDN_P_NONE) { /* New Setup */
switch (bprotocol) {
case ISDN_P_NONE: /* init */
if (!ch->dpath)
/* no init for dpath 0 */
return 0;
test_and_clear_bit(FLG_HDLC, &ch->bch.Flags);
test_and_clear_bit(FLG_TRANSPARENT, &ch->bch.Flags);
break;
case ISDN_P_B_RAW:
case ISDN_P_B_HDLC:
/* best is datapath 2 */
if (!test_and_set_bit(ISAR_DP2_USE, &ch->is->Flags))
ch->dpath = 2;
else if (!test_and_set_bit(ISAR_DP1_USE,
&ch->is->Flags))
ch->dpath = 1;
else {
pr_info("modeisar both paths in use\n");
return -EBUSY;
}
if (bprotocol == ISDN_P_B_HDLC)
test_and_set_bit(FLG_HDLC, &ch->bch.Flags);
else
test_and_set_bit(FLG_TRANSPARENT,
&ch->bch.Flags);
break;
case ISDN_P_B_MODEM_ASYNC:
case ISDN_P_B_T30_FAX:
case ISDN_P_B_L2DTMF:
/* only datapath 1 */
if (!test_and_set_bit(ISAR_DP1_USE, &ch->is->Flags))
ch->dpath = 1;
else {
pr_info("%s: ISAR modeisar analog functions"
"only with DP1\n", ch->is->name);
return -EBUSY;
}
break;
default:
pr_info("%s: protocol not known %x\n", ch->is->name,
bprotocol);
return -ENOPROTOOPT;
}
}
pr_debug("%s: ISAR ch%d dp%d protocol %x->%x\n", ch->is->name,
ch->bch.nr, ch->dpath, ch->bch.state, bprotocol);
ch->bch.state = bprotocol;
setup_pump(ch);
setup_iom2(ch);
setup_sart(ch);
if (ch->bch.state == ISDN_P_NONE) {
/* Clear resources */
if (ch->dpath == 1)
test_and_clear_bit(ISAR_DP1_USE, &ch->is->Flags);
else if (ch->dpath == 2)
test_and_clear_bit(ISAR_DP2_USE, &ch->is->Flags);
ch->dpath = 0;
ch->is->ctrl(ch->is->hw, HW_DEACT_IND, ch->bch.nr);
} else
ch->is->ctrl(ch->is->hw, HW_ACTIVATE_IND, ch->bch.nr);
return 0;
}
static void
isar_pump_cmd(struct isar_ch *ch, u32 cmd, u8 para)
{
u8 dps = SET_DPS(ch->dpath);
u8 ctrl = 0, nom = 0, p1 = 0;
pr_debug("%s: isar_pump_cmd %x/%x state(%x)\n",
ch->is->name, cmd, para, ch->bch.state);
switch (cmd) {
case HW_MOD_FTM:
if (ch->state == STFAX_READY) {
p1 = para;
ctrl = PCTRL_CMD_FTM;
nom = 1;
ch->state = STFAX_LINE;
ch->cmd = ctrl;
ch->mod = para;
ch->newmod = 0;
ch->newcmd = 0;
ch->try_mod = 3;
} else if ((ch->state == STFAX_ACTIV) &&
(ch->cmd == PCTRL_CMD_FTM) && (ch->mod == para))
deliver_status(ch, HW_MOD_CONNECT);
else {
ch->newmod = para;
ch->newcmd = PCTRL_CMD_FTM;
nom = 0;
ctrl = PCTRL_CMD_ESC;
ch->state = STFAX_ESCAPE;
}
break;
case HW_MOD_FTH:
if (ch->state == STFAX_READY) {
p1 = para;
ctrl = PCTRL_CMD_FTH;
nom = 1;
ch->state = STFAX_LINE;
ch->cmd = ctrl;
ch->mod = para;
ch->newmod = 0;
ch->newcmd = 0;
ch->try_mod = 3;
} else if ((ch->state == STFAX_ACTIV) &&
(ch->cmd == PCTRL_CMD_FTH) && (ch->mod == para))
deliver_status(ch, HW_MOD_CONNECT);
else {
ch->newmod = para;
ch->newcmd = PCTRL_CMD_FTH;
nom = 0;
ctrl = PCTRL_CMD_ESC;
ch->state = STFAX_ESCAPE;
}
break;
case HW_MOD_FRM:
if (ch->state == STFAX_READY) {
p1 = para;
ctrl = PCTRL_CMD_FRM;
nom = 1;
ch->state = STFAX_LINE;
ch->cmd = ctrl;
ch->mod = para;
ch->newmod = 0;
ch->newcmd = 0;
ch->try_mod = 3;
} else if ((ch->state == STFAX_ACTIV) &&
(ch->cmd == PCTRL_CMD_FRM) && (ch->mod == para))
deliver_status(ch, HW_MOD_CONNECT);
else {
ch->newmod = para;
ch->newcmd = PCTRL_CMD_FRM;
nom = 0;
ctrl = PCTRL_CMD_ESC;
ch->state = STFAX_ESCAPE;
}
break;
case HW_MOD_FRH:
if (ch->state == STFAX_READY) {
p1 = para;
ctrl = PCTRL_CMD_FRH;
nom = 1;
ch->state = STFAX_LINE;
ch->cmd = ctrl;
ch->mod = para;
ch->newmod = 0;
ch->newcmd = 0;
ch->try_mod = 3;
} else if ((ch->state == STFAX_ACTIV) &&
(ch->cmd == PCTRL_CMD_FRH) && (ch->mod == para))
deliver_status(ch, HW_MOD_CONNECT);
else {
ch->newmod = para;
ch->newcmd = PCTRL_CMD_FRH;
nom = 0;
ctrl = PCTRL_CMD_ESC;
ch->state = STFAX_ESCAPE;
}
break;
case PCTRL_CMD_TDTMF:
p1 = para;
nom = 1;
ctrl = PCTRL_CMD_TDTMF;
break;
}
if (ctrl)
send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL, ctrl, nom, &p1);
}
static void
isar_setup(struct isar_hw *isar)
{
u8 msg;
int i;
/* Dpath 1, 2 */
msg = 61;
for (i = 0; i < 2; i++) {
/* Buffer Config */
send_mbox(isar, (i ? ISAR_HIS_DPS2 : ISAR_HIS_DPS1) |
ISAR_HIS_P12CFG, 4, 1, &msg);
isar->ch[i].mml = msg;
isar->ch[i].bch.state = 0;
isar->ch[i].dpath = i + 1;
modeisar(&isar->ch[i], ISDN_P_NONE);
}
}
static int
isar_l2l1(struct mISDNchannel *ch, struct sk_buff *skb)
{
struct bchannel *bch = container_of(ch, struct bchannel, ch);
struct isar_ch *ich = container_of(bch, struct isar_ch, bch);
int ret = -EINVAL;
struct mISDNhead *hh = mISDN_HEAD_P(skb);
u32 id, *val;
u_long flags;
switch (hh->prim) {
case PH_DATA_REQ:
spin_lock_irqsave(ich->is->hwlock, flags);
ret = bchannel_senddata(bch, skb);
if (ret > 0) { /* direct TX */
ret = 0;
isar_fill_fifo(ich);
}
spin_unlock_irqrestore(ich->is->hwlock, flags);
return ret;
case PH_ACTIVATE_REQ:
spin_lock_irqsave(ich->is->hwlock, flags);
if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
ret = modeisar(ich, ch->protocol);
else
ret = 0;
spin_unlock_irqrestore(ich->is->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(ich->is->hwlock, flags);
mISDN_clear_bchannel(bch);
modeisar(ich, ISDN_P_NONE);
spin_unlock_irqrestore(ich->is->hwlock, flags);
_queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
NULL, GFP_KERNEL);
ret = 0;
break;
case PH_CONTROL_REQ:
val = (u32 *)skb->data;
pr_debug("%s: PH_CONTROL | REQUEST %x/%x\n", ich->is->name,
hh->id, *val);
if ((hh->id == 0) && ((*val & ~DTMF_TONE_MASK) ==
DTMF_TONE_VAL)) {
if (bch->state == ISDN_P_B_L2DTMF) {
char tt = *val & DTMF_TONE_MASK;
if (tt == '*')
tt = 0x1e;
else if (tt == '#')
tt = 0x1f;
else if (tt > '9')
tt -= 7;
tt &= 0x1f;
spin_lock_irqsave(ich->is->hwlock, flags);
isar_pump_cmd(ich, PCTRL_CMD_TDTMF, tt);
spin_unlock_irqrestore(ich->is->hwlock, flags);
} else {
pr_info("%s: DTMF send wrong protocol %x\n",
__func__, bch->state);
return -EINVAL;
}
} else if ((hh->id == HW_MOD_FRM) || (hh->id == HW_MOD_FRH) ||
(hh->id == HW_MOD_FTM) || (hh->id == HW_MOD_FTH)) {
for (id = 0; id < FAXMODCNT; id++)
if (faxmodulation[id] == *val)
break;
if ((FAXMODCNT > id) &&
test_bit(FLG_INITIALIZED, &bch->Flags)) {
pr_debug("%s: isar: new mod\n", ich->is->name);
isar_pump_cmd(ich, hh->id, *val);
ret = 0;
} else {
pr_info("%s: wrong modulation\n",
ich->is->name);
ret = -EINVAL;
}
} else if (hh->id == HW_MOD_LASTDATA)
test_and_set_bit(FLG_DLEETX, &bch->Flags);
else {
pr_info("%s: unknown PH_CONTROL_REQ %x\n",
ich->is->name, hh->id);
ret = -EINVAL;
}
/* fall through */
default:
pr_info("%s: %s unknown prim(%x,%x)\n",
ich->is->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)
{
return mISDN_ctrl_bchannel(bch, cq);
}
static int
isar_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
{
struct bchannel *bch = container_of(ch, struct bchannel, ch);
struct isar_ch *ich = container_of(bch, struct isar_ch, bch);
int ret = -EINVAL;
u_long flags;
pr_debug("%s: %s cmd:%x %p\n", ich->is->name, __func__, cmd, arg);
switch (cmd) {
case CLOSE_CHANNEL:
test_and_clear_bit(FLG_OPEN, &bch->Flags);
cancel_work_sync(&bch->workq);
spin_lock_irqsave(ich->is->hwlock, flags);
mISDN_clear_bchannel(bch);
modeisar(ich, ISDN_P_NONE);
spin_unlock_irqrestore(ich->is->hwlock, flags);
ch->protocol = ISDN_P_NONE;
ch->peer = NULL;
module_put(ich->is->owner);
ret = 0;
break;
case CONTROL_CHANNEL:
ret = channel_bctrl(bch, arg);
break;
default:
pr_info("%s: %s unknown prim(%x)\n",
ich->is->name, __func__, cmd);
}
return ret;
}
static void
free_isar(struct isar_hw *isar)
{
modeisar(&isar->ch[0], ISDN_P_NONE);
modeisar(&isar->ch[1], ISDN_P_NONE);
del_timer(&isar->ch[0].ftimer);
del_timer(&isar->ch[1].ftimer);
test_and_clear_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
test_and_clear_bit(FLG_INITIALIZED, &isar->ch[1].bch.Flags);
}
static int
init_isar(struct isar_hw *isar)
{
int cnt = 3;
while (cnt--) {
isar->version = ISARVersion(isar);
if (isar->ch[0].bch.debug & DEBUG_HW)
pr_notice("%s: Testing version %d (%d time)\n",
isar->name, isar->version, 3 - cnt);
if (isar->version == 1)
break;
isar->ctrl(isar->hw, HW_RESET_REQ, 0);
}
if (isar->version != 1)
return -EINVAL;
timer_setup(&isar->ch[0].ftimer, ftimer_handler, 0);
test_and_set_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
timer_setup(&isar->ch[1].ftimer, ftimer_handler, 0);
test_and_set_bit(FLG_INITIALIZED, &isar->ch[1].bch.Flags);
return 0;
}
static int
isar_open(struct isar_hw *isar, struct channel_req *rq)
{
struct bchannel *bch;
if (rq->adr.channel == 0 || rq->adr.channel > 2)
return -EINVAL;
if (rq->protocol == ISDN_P_NONE)
return -EINVAL;
bch = &isar->ch[rq->adr.channel - 1].bch;
if (test_and_set_bit(FLG_OPEN, &bch->Flags))
return -EBUSY; /* b-channel can be only open once */
bch->ch.protocol = rq->protocol;
rq->ch = &bch->ch;
return 0;
}
u32
mISDNisar_init(struct isar_hw *isar, void *hw)
{
u32 ret, i;
isar->hw = hw;
for (i = 0; i < 2; i++) {
isar->ch[i].bch.nr = i + 1;
mISDN_initbchannel(&isar->ch[i].bch, MAX_DATA_MEM, 32);
isar->ch[i].bch.ch.nr = i + 1;
isar->ch[i].bch.ch.send = &isar_l2l1;
isar->ch[i].bch.ch.ctrl = isar_bctrl;
isar->ch[i].bch.hw = hw;
isar->ch[i].is = isar;
}
isar->init = &init_isar;
isar->release = &free_isar;
isar->firmware = &load_firmware;
isar->open = &isar_open;
ret = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
(1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)) |
(1 << (ISDN_P_B_L2DTMF & ISDN_P_B_MASK)) |
(1 << (ISDN_P_B_MODEM_ASYNC & ISDN_P_B_MASK)) |
(1 << (ISDN_P_B_T30_FAX & ISDN_P_B_MASK));
return ret;
}
EXPORT_SYMBOL(mISDNisar_init);
static int __init isar_mod_init(void)
{
pr_notice("mISDN: ISAR driver Rev. %s\n", ISAR_REV);
return 0;
}
static void __exit isar_mod_cleanup(void)
{
pr_notice("mISDN: ISAR module unloaded\n");
}
module_init(isar_mod_init);
module_exit(isar_mod_cleanup);
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