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: nknown pump stev %x\n", ch->is->name, devt);
break;
}
}
static void
ftimer_handler(unsigned long data)
{
struct isar_ch *ch = (struct isar_ch *)data;
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
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
send_next(struct isar_ch *ch)
{
pr_debug("%s: %s ch%d tx_skb %p tx_idx %d\n",
ch->is->name, __func__, ch->bch.nr,
ch->bch.tx_skb, 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) {
/* send confirm, on trans, free on hdlc. */
if (test_bit(FLG_TRANSPARENT, &ch->bch.Flags))
confirm_Bsend(&ch->bch);
dev_kfree_skb(ch->bch.tx_skb);
}
if (get_next_bframe(&ch->bch))
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);
}
}
}
}
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;
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;
}
}
static inline void
isar_rcv_frame(struct isar_ch *ch)
{
u8 *ptr;
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;
}
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:
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",
ch->is->name);
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);
break;
case ISDN_P_B_HDLC:
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",
ch->is->name);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
break;
}
}
if ((ch->bch.rx_skb->len + ch->is->clsb) >
(ch->bch.maxlen + 2)) {
pr_debug("%s: incoming packet too large\n",
ch->is->name);
ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
skb_trim(ch->bch.rx_skb, 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);
}
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);
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);
}
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_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);
}