Initial import

1 files changed, 1123 insertions, 0 deletions

diff --git a/drivers/isdn/i4l/isdn_ttyfax.c b/drivers/isdn/i4l/isdn_ttyfax.c
new file mode 100644
index 000000000..47aae4916
--- /dev/null
+++ b/drivers/isdn/i4l/isdn_ttyfax.c
@@ -0,0 +1,1123 @@
+/* $Id: isdn_ttyfax.c,v 1.1.2.2 2004/01/12 22:37:19 keil Exp $
+ *
+ * Linux ISDN subsystem, tty_fax AT-command emulator (linklevel).
+ *
+ * Copyright 1999    by Armin Schindler (mac@melware.de)
+ * Copyright 1999    by Ralf Spachmann (mel@melware.de)
+ * Copyright 1999    by Cytronics & Melware
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#undef ISDN_TTY_FAX_STAT_DEBUG
+#undef ISDN_TTY_FAX_CMD_DEBUG
+
+#include <linux/isdn.h>
+#include "isdn_common.h"
+#include "isdn_tty.h"
+#include "isdn_ttyfax.h"
+
+
+static char *isdn_tty_fax_revision = "$Revision: 1.1.2.2 $";
+
+#define PARSE_ERROR1 { isdn_tty_fax_modem_result(1, info); return 1; }
+
+static char *
+isdn_getrev(const char *revision)
+{
+	char *rev;
+	char *p;
+
+	if ((p = strchr(revision, ':'))) {
+		rev = p + 2;
+		p = strchr(rev, '$');
+		*--p = 0;
+	} else
+		rev = "???";
+	return rev;
+}
+
+/*
+ * Fax Class 2 Modem results
+ *
+ */
+
+static void
+isdn_tty_fax_modem_result(int code, modem_info *info)
+{
+	atemu *m = &info->emu;
+	T30_s *f = info->fax;
+	char rs[50];
+	char rss[50];
+	char *rp;
+	int i;
+	static char *msg[] =
+		{"OK", "ERROR", "+FCON", "+FCSI:", "+FDIS:",
+		 "+FHNG:", "+FDCS:", "CONNECT", "+FTSI:",
+		 "+FCFR", "+FPTS:", "+FET:"};
+
+
+	isdn_tty_at_cout("\r\n", info);
+	isdn_tty_at_cout(msg[code], info);
+
+#ifdef ISDN_TTY_FAX_CMD_DEBUG
+	printk(KERN_DEBUG "isdn_tty: Fax send %s on ttyI%d\n",
+	       msg[code], info->line);
+#endif
+	switch (code) {
+	case 0: /* OK */
+		break;
+	case 1: /* ERROR */
+		break;
+	case 2:	/* +FCON */
+		/* Append CPN, if enabled */
+		if ((m->mdmreg[REG_CPNFCON] & BIT_CPNFCON) &&
+		    (!(dev->usage[info->isdn_channel] & ISDN_USAGE_OUTGOING))) {
+			sprintf(rs, "/%s", m->cpn);
+			isdn_tty_at_cout(rs, info);
+		}
+		info->online = 1;
+		f->fet = 0;
+		if (f->phase == ISDN_FAX_PHASE_A)
+			f->phase = ISDN_FAX_PHASE_B;
+		break;
+	case 3:	/* +FCSI */
+	case 8:	/* +FTSI */
+		sprintf(rs, "\"%s\"", f->r_id);
+		isdn_tty_at_cout(rs, info);
+		break;
+	case 4:	/* +FDIS */
+		rs[0] = 0;
+		rp = &f->r_resolution;
+		for (i = 0; i < 8; i++) {
+			sprintf(rss, "%c%s", rp[i] + 48,
+				(i < 7) ? "," : "");
+			strcat(rs, rss);
+		}
+		isdn_tty_at_cout(rs, info);
+#ifdef ISDN_TTY_FAX_CMD_DEBUG
+		printk(KERN_DEBUG "isdn_tty: Fax DIS=%s on ttyI%d\n",
+		       rs, info->line);
+#endif
+		break;
+	case 5:	/* +FHNG */
+		sprintf(rs, "%d", f->code);
+		isdn_tty_at_cout(rs, info);
+		info->faxonline = 0;
+		break;
+	case 6:	/* +FDCS */
+		rs[0] = 0;
+		rp = &f->r_resolution;
+		for (i = 0; i < 8; i++) {
+			sprintf(rss, "%c%s", rp[i] + 48,
+				(i < 7) ? "," : "");
+			strcat(rs, rss);
+		}
+		isdn_tty_at_cout(rs, info);
+#ifdef ISDN_TTY_FAX_CMD_DEBUG
+		printk(KERN_DEBUG "isdn_tty: Fax DCS=%s on ttyI%d\n",
+		       rs, info->line);
+#endif
+		break;
+	case 7:	/* CONNECT */
+		info->faxonline |= 2;
+		break;
+	case 9:	/* FCFR */
+		break;
+	case 10:	/* FPTS */
+		isdn_tty_at_cout("1", info);
+		break;
+	case 11:	/* FET */
+		sprintf(rs, "%d", f->fet);
+		isdn_tty_at_cout(rs, info);
+		break;
+	}
+
+	isdn_tty_at_cout("\r\n", info);
+
+	switch (code) {
+	case 7:	/* CONNECT */
+		info->online = 2;
+		if (info->faxonline & 1) {
+			sprintf(rs, "%c", XON);
+			isdn_tty_at_cout(rs, info);
+		}
+		break;
+	}
+}
+
+static int
+isdn_tty_fax_command1(modem_info *info, isdn_ctrl *c)
+{
+	static char *msg[] =
+		{"OK", "CONNECT", "NO CARRIER", "ERROR", "FCERROR"};
+
+#ifdef ISDN_TTY_FAX_CMD_DEBUG
+	printk(KERN_DEBUG "isdn_tty: FCLASS1 cmd(%d)\n", c->parm.aux.cmd);
+#endif
+	if (c->parm.aux.cmd < ISDN_FAX_CLASS1_QUERY) {
+		if (info->online)
+			info->online = 1;
+		isdn_tty_at_cout("\r\n", info);
+		isdn_tty_at_cout(msg[c->parm.aux.cmd], info);
+		isdn_tty_at_cout("\r\n", info);
+	}
+	switch (c->parm.aux.cmd) {
+	case ISDN_FAX_CLASS1_CONNECT:
+		info->online = 2;
+		break;
+	case ISDN_FAX_CLASS1_OK:
+	case ISDN_FAX_CLASS1_FCERROR:
+	case ISDN_FAX_CLASS1_ERROR:
+	case ISDN_FAX_CLASS1_NOCARR:
+		break;
+	case ISDN_FAX_CLASS1_QUERY:
+		isdn_tty_at_cout("\r\n", info);
+		if (!c->parm.aux.para[0]) {
+			isdn_tty_at_cout(msg[ISDN_FAX_CLASS1_ERROR], info);
+			isdn_tty_at_cout("\r\n", info);
+		} else {
+			isdn_tty_at_cout(c->parm.aux.para, info);
+			isdn_tty_at_cout("\r\nOK\r\n", info);
+		}
+		break;
+	}
+	return (0);
+}
+
+int
+isdn_tty_fax_command(modem_info *info, isdn_ctrl *c)
+{
+	T30_s *f = info->fax;
+	char rs[10];
+
+	if (TTY_IS_FCLASS1(info))
+		return (isdn_tty_fax_command1(info, c));
+
+#ifdef ISDN_TTY_FAX_CMD_DEBUG
+	printk(KERN_DEBUG "isdn_tty: Fax cmd %d on ttyI%d\n",
+	       f->r_code, info->line);
+#endif
+	switch (f->r_code) {
+	case ISDN_TTY_FAX_FCON:
+		info->faxonline = 1;
+		isdn_tty_fax_modem_result(2, info);	/* +FCON */
+		return (0);
+	case ISDN_TTY_FAX_FCON_I:
+		info->faxonline = 16;
+		isdn_tty_fax_modem_result(2, info);	/* +FCON */
+		return (0);
+	case ISDN_TTY_FAX_RID:
+		if (info->faxonline & 1)
+			isdn_tty_fax_modem_result(3, info);	/* +FCSI */
+		if (info->faxonline & 16)
+			isdn_tty_fax_modem_result(8, info);	/* +FTSI */
+		return (0);
+	case ISDN_TTY_FAX_DIS:
+		isdn_tty_fax_modem_result(4, info);	/* +FDIS */
+		return (0);
+	case ISDN_TTY_FAX_HNG:
+		if (f->phase == ISDN_FAX_PHASE_C) {
+			if (f->direction == ISDN_TTY_FAX_CONN_IN) {
+				sprintf(rs, "%c%c", DLE, ETX);
+				isdn_tty_at_cout(rs, info);
+			} else {
+				sprintf(rs, "%c", 0x18);
+				isdn_tty_at_cout(rs, info);
+			}
+			info->faxonline &= ~2;	/* leave data mode */
+			info->online = 1;
+		}
+		f->phase = ISDN_FAX_PHASE_E;
+		isdn_tty_fax_modem_result(5, info);	/* +FHNG */
+		isdn_tty_fax_modem_result(0, info);	/* OK */
+		return (0);
+	case ISDN_TTY_FAX_DCS:
+		isdn_tty_fax_modem_result(6, info);	/* +FDCS */
+		isdn_tty_fax_modem_result(7, info);	/* CONNECT */
+		f->phase = ISDN_FAX_PHASE_C;
+		return (0);
+	case ISDN_TTY_FAX_TRAIN_OK:
+		isdn_tty_fax_modem_result(6, info);	/* +FDCS */
+		isdn_tty_fax_modem_result(0, info);	/* OK */
+		return (0);
+	case ISDN_TTY_FAX_SENT:
+		isdn_tty_fax_modem_result(0, info);	/* OK */
+		return (0);
+	case ISDN_TTY_FAX_CFR:
+		isdn_tty_fax_modem_result(9, info);	/* +FCFR */
+		return (0);
+	case ISDN_TTY_FAX_ET:
+		sprintf(rs, "%c%c", DLE, ETX);
+		isdn_tty_at_cout(rs, info);
+		isdn_tty_fax_modem_result(10, info);	/* +FPTS */
+		isdn_tty_fax_modem_result(11, info);	/* +FET */
+		isdn_tty_fax_modem_result(0, info);	/* OK */
+		info->faxonline &= ~2;	/* leave data mode */
+		info->online = 1;
+		f->phase = ISDN_FAX_PHASE_D;
+		return (0);
+	case ISDN_TTY_FAX_PTS:
+		isdn_tty_fax_modem_result(10, info);	/* +FPTS */
+		if (f->direction == ISDN_TTY_FAX_CONN_OUT) {
+			if (f->fet == 1)
+				f->phase = ISDN_FAX_PHASE_B;
+			if (f->fet == 0)
+				isdn_tty_fax_modem_result(0, info);	/* OK */
+		}
+		return (0);
+	case ISDN_TTY_FAX_EOP:
+		info->faxonline &= ~2;	/* leave data mode */
+		info->online = 1;
+		f->phase = ISDN_FAX_PHASE_D;
+		return (0);
+
+	}
+	return (-1);
+}
+
+
+void
+isdn_tty_fax_bitorder(modem_info *info, struct sk_buff *skb)
+{
+	__u8 LeftMask;
+	__u8 RightMask;
+	__u8 fBit;
+	__u8 Data;
+	int i;
+
+	if (!info->fax->bor) {
+		for (i = 0; i < skb->len; i++) {
+			Data = skb->data[i];
+			for (
+				LeftMask = 0x80, RightMask = 0x01;
+				LeftMask > RightMask;
+				LeftMask >>= 1, RightMask <<= 1
+				) {
+				fBit = (Data & LeftMask);
+				if (Data & RightMask)
+					Data |= LeftMask;
+				else
+					Data &= ~LeftMask;
+				if (fBit)
+					Data |= RightMask;
+				else
+					Data &= ~RightMask;
+
+			}
+			skb->data[i] = Data;
+		}
+	}
+}
+
+/*
+ * Parse AT+F.. FAX class 1 commands
+ */
+
+static int
+isdn_tty_cmd_FCLASS1(char **p, modem_info *info)
+{
+	static char *cmd[] =
+		{"AE", "TS", "RS", "TM", "RM", "TH", "RH"};
+	isdn_ctrl c;
+	int par, i;
+	u_long flags;
+
+	for (c.parm.aux.cmd = 0; c.parm.aux.cmd < 7; c.parm.aux.cmd++)
+		if (!strncmp(p[0], cmd[c.parm.aux.cmd], 2))
+			break;
+
+#ifdef ISDN_TTY_FAX_CMD_DEBUG
+	printk(KERN_DEBUG "isdn_tty_cmd_FCLASS1 (%s,%d)\n", p[0], c.parm.aux.cmd);
+#endif
+	if (c.parm.aux.cmd == 7)
+		PARSE_ERROR1;
+
+	p[0] += 2;
+	switch (*p[0]) {
+	case '?':
+		p[0]++;
+		c.parm.aux.subcmd = AT_QUERY;
+		break;
+	case '=':
+		p[0]++;
+		if (*p[0] == '?') {
+			p[0]++;
+			c.parm.aux.subcmd = AT_EQ_QUERY;
+		} else {
+			par = isdn_getnum(p);
+			if ((par < 0) || (par > 255))
+				PARSE_ERROR1;
+			c.parm.aux.subcmd = AT_EQ_VALUE;
+			c.parm.aux.para[0] = par;
+		}
+		break;
+	case 0:
+		c.parm.aux.subcmd = AT_COMMAND;
+		break;
+	default:
+		PARSE_ERROR1;
+	}
+	c.command = ISDN_CMD_FAXCMD;
+#ifdef ISDN_TTY_FAX_CMD_DEBUG
+	printk(KERN_DEBUG "isdn_tty_cmd_FCLASS1 %d/%d/%d)\n",
+	       c.parm.aux.cmd, c.parm.aux.subcmd, c.parm.aux.para[0]);
+#endif
+	if (info->isdn_driver < 0) {
+		if ((c.parm.aux.subcmd == AT_EQ_VALUE) ||
+		    (c.parm.aux.subcmd == AT_COMMAND)) {
+			PARSE_ERROR1;
+		}
+		spin_lock_irqsave(&dev->lock, flags);
+		/* get a temporary connection to the first free fax driver */
+		i = isdn_get_free_channel(ISDN_USAGE_FAX, ISDN_PROTO_L2_FAX,
+					  ISDN_PROTO_L3_FCLASS1, -1, -1, "00");
+		if (i < 0) {
+			spin_unlock_irqrestore(&dev->lock, flags);
+			PARSE_ERROR1;
+		}
+		info->isdn_driver = dev->drvmap[i];
+		info->isdn_channel = dev->chanmap[i];
+		info->drv_index = i;
+		dev->m_idx[i] = info->line;
+		spin_unlock_irqrestore(&dev->lock, flags);
+		c.driver = info->isdn_driver;
+		c.arg = info->isdn_channel;
+		isdn_command(&c);
+		spin_lock_irqsave(&dev->lock, flags);
+		isdn_free_channel(info->isdn_driver, info->isdn_channel,
+				  ISDN_USAGE_FAX);
+		info->isdn_driver = -1;
+		info->isdn_channel = -1;
+		if (info->drv_index >= 0) {
+			dev->m_idx[info->drv_index] = -1;
+			info->drv_index = -1;
+		}
+		spin_unlock_irqrestore(&dev->lock, flags);
+	} else {
+		c.driver = info->isdn_driver;
+		c.arg = info->isdn_channel;
+		isdn_command(&c);
+	}
+	return 1;
+}
+
+/*
+ * Parse AT+F.. FAX class 2 commands
+ */
+
+static int
+isdn_tty_cmd_FCLASS2(char **p, modem_info *info)
+{
+	atemu *m = &info->emu;
+	T30_s *f = info->fax;
+	isdn_ctrl cmd;
+	int par;
+	char rs[50];
+	char rss[50];
+	int maxdccval[] =
+		{1, 5, 2, 2, 3, 2, 0, 7};
+
+	/* FAA still unchanged */
+	if (!strncmp(p[0], "AA", 2)) {	/* TODO */
+		p[0] += 2;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", 0);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			par = isdn_getnum(p);
+			if ((par < 0) || (par > 255))
+				PARSE_ERROR1;
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* BADLIN=value - dummy 0=disable errorchk disabled, 1-255 nr. of lines for making page bad */
+	if (!strncmp(p[0], "BADLIN", 6)) {
+		p[0] += 6;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->badlin);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0-255");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par < 0) || (par > 255))
+					PARSE_ERROR1;
+				f->badlin = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FBADLIN=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* BADMUL=value - dummy 0=disable errorchk disabled (threshold multiplier) */
+	if (!strncmp(p[0], "BADMUL", 6)) {
+		p[0] += 6;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->badmul);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0-255");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par < 0) || (par > 255))
+					PARSE_ERROR1;
+				f->badmul = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FBADMUL=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* BOR=n - Phase C bit order, 0=direct, 1=reverse */
+	if (!strncmp(p[0], "BOR", 3)) {
+		p[0] += 3;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->bor);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0,1");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par < 0) || (par > 1))
+					PARSE_ERROR1;
+				f->bor = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FBOR=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* NBC=n - No Best Capabilities */
+	if (!strncmp(p[0], "NBC", 3)) {
+		p[0] += 3;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->nbc);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0,1");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par < 0) || (par > 1))
+					PARSE_ERROR1;
+				f->nbc = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FNBC=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* BUF? - Readonly buffersize readout  */
+	if (!strncmp(p[0], "BUF?", 4)) {
+		p[0] += 4;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+		printk(KERN_DEBUG "isdn_tty: Fax FBUF? (%d) \n", (16 * m->mdmreg[REG_PSIZE]));
+#endif
+		p[0]++;
+		sprintf(rs, "\r\n %d ", (16 * m->mdmreg[REG_PSIZE]));
+		isdn_tty_at_cout(rs, info);
+		return 0;
+	}
+	/* CIG=string - local fax station id string for polling rx */
+	if (!strncmp(p[0], "CIG", 3)) {
+		int i, r;
+		p[0] += 3;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n\"%s\"", f->pollid);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n\"STRING\"");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				if (*p[0] == '"')
+					p[0]++;
+				for (i = 0; (*p[0]) && i < (FAXIDLEN - 1) && (*p[0] != '"'); i++) {
+					f->pollid[i] = *p[0]++;
+				}
+				if (*p[0] == '"')
+					p[0]++;
+				for (r = i; r < FAXIDLEN; r++) {
+					f->pollid[r] = 32;
+				}
+				f->pollid[FAXIDLEN - 1] = 0;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax local poll ID rx \"%s\"\n", f->pollid);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* CQ=n - copy qlty chk, 0= no chk, 1=only 1D chk, 2=1D+2D chk */
+	if (!strncmp(p[0], "CQ", 2)) {
+		p[0] += 2;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->cq);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0,1,2");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par < 0) || (par > 2))
+					PARSE_ERROR1;
+				f->cq = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FCQ=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* CR=n - can receive? 0= no data rx or poll remote dev, 1=do receive data or poll remote dev */
+	if (!strncmp(p[0], "CR", 2)) {
+		p[0] += 2;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->cr);	/* read actual value from struct and print */
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0,1");		/* display online help */
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par < 0) || (par > 1))
+					PARSE_ERROR1;
+				f->cr = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FCR=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* CTCRTY=value - ECM retry count */
+	if (!strncmp(p[0], "CTCRTY", 6)) {
+		p[0] += 6;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->ctcrty);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0-255");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par < 0) || (par > 255))
+					PARSE_ERROR1;
+				f->ctcrty = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FCTCRTY=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* DCC=vr,br,wd,ln,df,ec,bf,st - DCE capabilities parms */
+	if (!strncmp(p[0], "DCC", 3)) {
+		char *rp = &f->resolution;
+		int i;
+
+		p[0] += 3;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			strcpy(rs, "\r\n");
+			for (i = 0; i < 8; i++) {
+				sprintf(rss, "%c%s", rp[i] + 48,
+					(i < 7) ? "," : "");
+				strcat(rs, rss);
+			}
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				isdn_tty_at_cout("\r\n(0,1),(0-5),(0-2),(0-2),(0-3),(0-2),(0),(0-7)", info);
+				p[0]++;
+			} else {
+				for (i = 0; (((*p[0] >= '0') && (*p[0] <= '9')) || (*p[0] == ',')) && (i < 8); i++) {
+					if (*p[0] != ',') {
+						if ((*p[0] - 48) > maxdccval[i]) {
+							PARSE_ERROR1;
+						}
+						rp[i] = *p[0] - 48;
+						p[0]++;
+						if (*p[0] == ',')
+							p[0]++;
+					} else
+						p[0]++;
+				}
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FDCC capabilities DCE=%d,%d,%d,%d,%d,%d,%d,%d\n",
+				       rp[0], rp[1], rp[2], rp[3], rp[4], rp[5], rp[6], rp[7]);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* DIS=vr,br,wd,ln,df,ec,bf,st - current session parms */
+	if (!strncmp(p[0], "DIS", 3)) {
+		char *rp = &f->resolution;
+		int i;
+
+		p[0] += 3;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			strcpy(rs, "\r\n");
+			for (i = 0; i < 8; i++) {
+				sprintf(rss, "%c%s", rp[i] + 48,
+					(i < 7) ? "," : "");
+				strcat(rs, rss);
+			}
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				isdn_tty_at_cout("\r\n(0,1),(0-5),(0-2),(0-2),(0-3),(0-2),(0),(0-7)", info);
+				p[0]++;
+			} else {
+				for (i = 0; (((*p[0] >= '0') && (*p[0] <= '9')) || (*p[0] == ',')) && (i < 8); i++) {
+					if (*p[0] != ',') {
+						if ((*p[0] - 48) > maxdccval[i]) {
+							PARSE_ERROR1;
+						}
+						rp[i] = *p[0] - 48;
+						p[0]++;
+						if (*p[0] == ',')
+							p[0]++;
+					} else
+						p[0]++;
+				}
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FDIS session parms=%d,%d,%d,%d,%d,%d,%d,%d\n",
+				       rp[0], rp[1], rp[2], rp[3], rp[4], rp[5], rp[6], rp[7]);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* DR - Receive Phase C data command, initiates document reception */
+	if (!strncmp(p[0], "DR", 2)) {
+		p[0] += 2;
+		if ((info->faxonline & 16) &&	/* incoming connection */
+		    ((f->phase == ISDN_FAX_PHASE_B) || (f->phase == ISDN_FAX_PHASE_D))) {
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+			printk(KERN_DEBUG "isdn_tty: Fax FDR\n");
+#endif
+			f->code = ISDN_TTY_FAX_DR;
+			cmd.driver = info->isdn_driver;
+			cmd.arg = info->isdn_channel;
+			cmd.command = ISDN_CMD_FAXCMD;
+			isdn_command(&cmd);
+			if (f->phase == ISDN_FAX_PHASE_B) {
+				f->phase = ISDN_FAX_PHASE_C;
+			} else if (f->phase == ISDN_FAX_PHASE_D) {
+				switch (f->fet) {
+				case 0:	/* next page will be received */
+					f->phase = ISDN_FAX_PHASE_C;
+					isdn_tty_fax_modem_result(7, info);	/* CONNECT */
+					break;
+				case 1:	/* next doc will be received */
+					f->phase = ISDN_FAX_PHASE_B;
+					break;
+				case 2:	/* fax session is terminating */
+					f->phase = ISDN_FAX_PHASE_E;
+					break;
+				default:
+					PARSE_ERROR1;
+				}
+			}
+		} else {
+			PARSE_ERROR1;
+		}
+		return 1;
+	}
+	/* DT=df,vr,wd,ln - TX phase C data command (release DCE to proceed with negotiation) */
+	if (!strncmp(p[0], "DT", 2)) {
+		int i, val[] =
+			{4, 0, 2, 3};
+		char *rp = &f->resolution;
+
+		p[0] += 2;
+		if (!(info->faxonline & 1))	/* not outgoing connection */
+			PARSE_ERROR1;
+
+		for (i = 0; (((*p[0] >= '0') && (*p[0] <= '9')) || (*p[0] == ',')) && (i < 4); i++) {
+			if (*p[0] != ',') {
+				if ((*p[0] - 48) > maxdccval[val[i]]) {
+					PARSE_ERROR1;
+				}
+				rp[val[i]] = *p[0] - 48;
+				p[0]++;
+				if (*p[0] == ',')
+					p[0]++;
+			} else
+				p[0]++;
+		}
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+		printk(KERN_DEBUG "isdn_tty: Fax FDT tx data command parms=%d,%d,%d,%d\n",
+		       rp[4], rp[0], rp[2], rp[3]);
+#endif
+		if ((f->phase == ISDN_FAX_PHASE_B) || (f->phase == ISDN_FAX_PHASE_D)) {
+			f->code = ISDN_TTY_FAX_DT;
+			cmd.driver = info->isdn_driver;
+			cmd.arg = info->isdn_channel;
+			cmd.command = ISDN_CMD_FAXCMD;
+			isdn_command(&cmd);
+			if (f->phase == ISDN_FAX_PHASE_D) {
+				f->phase = ISDN_FAX_PHASE_C;
+				isdn_tty_fax_modem_result(7, info);	/* CONNECT */
+			}
+		} else {
+			PARSE_ERROR1;
+		}
+		return 1;
+	}
+	/* ECM=n - Error mode control 0=disabled, 2=enabled, handled by DCE alone incl. buff of partial pages */
+	if (!strncmp(p[0], "ECM", 3)) {
+		p[0] += 3;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->ecm);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0,2");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par != 0) && (par != 2))
+					PARSE_ERROR1;
+				f->ecm = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FECM=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* ET=n - End of page or document */
+	if (!strncmp(p[0], "ET=", 3)) {
+		p[0] += 3;
+		if (*p[0] == '?') {
+			p[0]++;
+			sprintf(rs, "\r\n0-2");
+			isdn_tty_at_cout(rs, info);
+		} else {
+			if ((f->phase != ISDN_FAX_PHASE_D) ||
+			    (!(info->faxonline & 1)))
+				PARSE_ERROR1;
+			par = isdn_getnum(p);
+			if ((par < 0) || (par > 2))
+				PARSE_ERROR1;
+			f->fet = par;
+			f->code = ISDN_TTY_FAX_ET;
+			cmd.driver = info->isdn_driver;
+			cmd.arg = info->isdn_channel;
+			cmd.command = ISDN_CMD_FAXCMD;
+			isdn_command(&cmd);
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+			printk(KERN_DEBUG "isdn_tty: Fax FET=%d\n", par);
+#endif
+			return 1;
+		}
+		return 0;
+	}
+	/* K - terminate */
+	if (!strncmp(p[0], "K", 1)) {
+		p[0] += 1;
+		if ((f->phase == ISDN_FAX_PHASE_IDLE) || (f->phase == ISDN_FAX_PHASE_E))
+			PARSE_ERROR1;
+		isdn_tty_modem_hup(info, 1);
+		return 1;
+	}
+	/* LID=string - local fax ID */
+	if (!strncmp(p[0], "LID", 3)) {
+		int i, r;
+		p[0] += 3;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n\"%s\"", f->id);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n\"STRING\"");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				if (*p[0] == '"')
+					p[0]++;
+				for (i = 0; (*p[0]) && i < (FAXIDLEN - 1) && (*p[0] != '"'); i++) {
+					f->id[i] = *p[0]++;
+				}
+				if (*p[0] == '"')
+					p[0]++;
+				for (r = i; r < FAXIDLEN; r++) {
+					f->id[r] = 32;
+				}
+				f->id[FAXIDLEN - 1] = 0;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax local ID \"%s\"\n", f->id);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+
+	/* MDL? - DCE Model       */
+	if (!strncmp(p[0], "MDL?", 4)) {
+		p[0] += 4;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+		printk(KERN_DEBUG "isdn_tty: FMDL?\n");
+#endif
+		isdn_tty_at_cout("\r\nisdn4linux", info);
+		return 0;
+	}
+	/* MFR? - DCE Manufacturer */
+	if (!strncmp(p[0], "MFR?", 4)) {
+		p[0] += 4;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+		printk(KERN_DEBUG "isdn_tty: FMFR?\n");
+#endif
+		isdn_tty_at_cout("\r\nisdn4linux", info);
+		return 0;
+	}
+	/* MINSP=n - Minimum Speed for Phase C */
+	if (!strncmp(p[0], "MINSP", 5)) {
+		p[0] += 5;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->minsp);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0-5");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par < 0) || (par > 5))
+					PARSE_ERROR1;
+				f->minsp = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FMINSP=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* PHCTO=value - DTE phase C timeout */
+	if (!strncmp(p[0], "PHCTO", 5)) {
+		p[0] += 5;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->phcto);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0-255");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par < 0) || (par > 255))
+					PARSE_ERROR1;
+				f->phcto = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FPHCTO=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+
+	/* REL=n - Phase C received EOL alignment */
+	if (!strncmp(p[0], "REL", 3)) {
+		p[0] += 3;
+		switch (*p[0]) {
+		case '?':
+			p[0]++;
+			sprintf(rs, "\r\n%d", f->rel);
+			isdn_tty_at_cout(rs, info);
+			break;
+		case '=':
+			p[0]++;
+			if (*p[0] == '?') {
+				p[0]++;
+				sprintf(rs, "\r\n0,1");
+				isdn_tty_at_cout(rs, info);
+			} else {
+				par = isdn_getnum(p);
+				if ((par < 0) || (par > 1))
+					PARSE_ERROR1;
+				f->rel = par;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+				printk(KERN_DEBUG "isdn_tty: Fax FREL=%d\n", par);
+#endif
+			}
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	/* REV? - DCE Revision */
+	if (!strncmp(p[0], "REV?", 4)) {
+		p[0] += 4;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+		printk(KERN_DEBUG "isdn_tty: FREV?\n");
+#endif
+		strcpy(rss, isdn_tty_fax_revision);
+		sprintf(rs, "\r\nRev: %s", isdn_getrev(rss));
+		isdn_tty_at_cout(rs, info);
+		return 0;
+	}
+
+	/* Phase C Transmit Data Block Size */
+	if (!strncmp(p[0], "TBC=", 4)) {	/* dummy, not used */
+		p[0] += 4;
+#ifdef ISDN_TTY_FAX_STAT_DEBUG
+		printk(KERN_DEBUG "isdn_tty: Fax FTBC=%c\n", *p[0]);
+#endif
+		switch (*p[0]) {
+		case '0':
+			p[0]++;
+			break;
+		default:
+			PARSE_ERROR1;
+		}
+		return 0;
+	}
+	printk(KERN_DEBUG "isdn_tty: unknown token=>AT+F%s<\n", p[0]);
+	PARSE_ERROR1;
+}
+
+int
+isdn_tty_cmd_PLUSF_FAX(char **p, modem_info *info)
+{
+	if (TTY_IS_FCLASS2(info))
+		return (isdn_tty_cmd_FCLASS2(p, info));
+	else if (TTY_IS_FCLASS1(info))
+		return (isdn_tty_cmd_FCLASS1(p, info));
+	PARSE_ERROR1;
+}