--- /dev/null
+/*
+ * 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;
+ 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(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
+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);
+ }
+ 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;
+ 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;
+ }
+ 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;
+ isar->ch[0].ftimer.function = &ftimer_handler;
+ isar->ch[0].ftimer.data = (long)&isar->ch[0];
+ init_timer(&isar->ch[0].ftimer);
+ test_and_set_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
+ isar->ch[1].ftimer.function = &ftimer_handler;
+ isar->ch[1].ftimer.data = (long)&isar->ch[1];
+ init_timer(&isar->ch[1].ftimer);
+ 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);
Code Review / kvmfornfv.git / blobdiff