patch-2.3.46 linux/drivers/isdn/avmb1/b1dma.c

• Lines: 985
• Date: Tue Feb 15 22:39:01 2000
• Orig file: v2.3.45/linux/drivers/isdn/avmb1/b1dma.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.45/linux/drivers/isdn/avmb1/b1dma.c linux/drivers/isdn/avmb1/b1dma.c
@@ -0,0 +1,984 @@
+/*
+ * $Id: b1dma.c,v 1.2 2000/01/25 14:44:47 calle Exp $
+ * 
+ * Common module for AVM B1 cards that support dma with AMCC
+ * 
+ * (c) Copyright 2000 by Carsten Paeth (calle@calle.in-berlin.de)
+ * 
+ * $Log: b1dma.c,v $
+ * Revision 1.2  2000/01/25 14:44:47  calle
+ * typo in b1pciv4_detect().
+ *
+ * Revision 1.1  2000/01/25 14:36:43  calle
+ * common function for  T1 PCI and B1 PCI V4.
+ *
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/delay.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/capi.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include "capilli.h"
+#include "avmcard.h"
+#include "capicmd.h"
+#include "capiutil.h"
+
+static char *revision = "$Revision: 1.2 $";
+
+/* ------------------------------------------------------------- */
+
+MODULE_AUTHOR("Carsten Paeth <calle@calle.in-berlin.de>");
+
+int suppress_pollack = 0;
+MODULE_PARM(suppress_pollack, "0-1i");
+
+/* ------------------------------------------------------------- */
+
+static void b1dma_dispatch_tx(avmcard *card);
+
+/* ------------------------------------------------------------- */
+
+/* S5933 */
+
+#define	AMCC_RXPTR	0x24
+#define	AMCC_RXLEN	0x28
+#define	AMCC_TXPTR	0x2c
+#define	AMCC_TXLEN	0x30
+
+#define	AMCC_INTCSR	0x38
+#	define EN_READ_TC_INT		0x00008000L
+#	define EN_WRITE_TC_INT		0x00004000L
+#	define EN_TX_TC_INT		EN_READ_TC_INT
+#	define EN_RX_TC_INT		EN_WRITE_TC_INT
+#	define AVM_FLAG			0x30000000L
+
+#	define ANY_S5933_INT		0x00800000L
+#	define	READ_TC_INT		0x00080000L
+#	define WRITE_TC_INT		0x00040000L
+#	define	TX_TC_INT		READ_TC_INT
+#	define	RX_TC_INT		WRITE_TC_INT
+#	define MASTER_ABORT_INT		0x00100000L
+#	define TARGET_ABORT_INT		0x00200000L
+#	define BUS_MASTER_INT		0x00200000L
+#	define ALL_INT			0x000C0000L
+
+#define	AMCC_MCSR	0x3c
+#	define A2P_HI_PRIORITY		0x00000100L
+#	define EN_A2P_TRANSFERS		0x00000400L
+#	define P2A_HI_PRIORITY		0x00001000L
+#	define EN_P2A_TRANSFERS		0x00004000L
+#	define RESET_A2P_FLAGS		0x04000000L
+#	define RESET_P2A_FLAGS		0x02000000L
+
+/* ------------------------------------------------------------- */
+
+#define b1dmaoutmeml(addr, value)	writel(value, addr)
+#define b1dmainmeml(addr)	readl(addr)
+#define b1dmaoutmemw(addr, value)	writew(value, addr)
+#define b1dmainmemw(addr)	readw(addr)
+#define b1dmaoutmemb(addr, value)	writeb(value, addr)
+#define b1dmainmemb(addr)	readb(addr)
+
+/* ------------------------------------------------------------- */
+
+static inline int b1dma_tx_empty(unsigned int port)
+{
+	return inb(port + 0x03) & 0x1;
+}
+
+static inline int b1dma_rx_full(unsigned int port)
+{
+	return inb(port + 0x02) & 0x1;
+}
+
+static int b1dma_tolink(avmcard *card, void *buf, unsigned int len)
+{
+	unsigned long stop = jiffies + 1 * HZ;	/* maximum wait time 1 sec */
+	unsigned char *s = (unsigned char *)buf;
+	while (len--) {
+		while (   !b1dma_tx_empty(card->port)
+		       && time_before(jiffies, stop));
+		if (!b1dma_tx_empty(card->port)) 
+			return -1;
+	        t1outp(card->port, 0x01, *s++);
+	}
+	return 0;
+}
+
+static int b1dma_fromlink(avmcard *card, void *buf, unsigned int len)
+{
+	unsigned long stop = jiffies + 1 * HZ;	/* maximum wait time 1 sec */
+	unsigned char *s = (unsigned char *)buf;
+	while (len--) {
+		while (   !b1dma_rx_full(card->port)
+		       && time_before(jiffies, stop));
+		if (!b1dma_rx_full(card->port)) 
+			return -1;
+	        *s++ = t1inp(card->port, 0x00);
+	}
+	return 0;
+}
+
+static int WriteReg(avmcard *card, __u32 reg, __u8 val)
+{
+	__u8 cmd = 0x00;
+	if (   b1dma_tolink(card, &cmd, 1) == 0
+	    && b1dma_tolink(card, &reg, 4) == 0) {
+		__u32 tmp = val;
+		return b1dma_tolink(card, &tmp, 4);
+	}
+	return -1;
+}
+
+static __u8 ReadReg(avmcard *card, __u32 reg)
+{
+	__u8 cmd = 0x01;
+	if (   b1dma_tolink(card, &cmd, 1) == 0
+	    && b1dma_tolink(card, &reg, 4) == 0) {
+		__u32 tmp;
+		if (b1dma_fromlink(card, &tmp, 4) == 0)
+			return (__u8)tmp;
+	}
+	return 0xff;
+}
+
+/* ------------------------------------------------------------- */
+
+static inline void _put_byte(void **pp, __u8 val)
+{
+	__u8 *s = *pp;
+	*s++ = val;
+	*pp = s;
+}
+
+static inline void _put_word(void **pp, __u32 val)
+{
+	__u8 *s = *pp;
+	*s++ = val & 0xff;
+	*s++ = (val >> 8) & 0xff;
+	*s++ = (val >> 16) & 0xff;
+	*s++ = (val >> 24) & 0xff;
+	*pp = s;
+}
+
+static inline void _put_slice(void **pp, unsigned char *dp, unsigned int len)
+{
+	unsigned i = len;
+	_put_word(pp, i);
+	while (i-- > 0)
+		_put_byte(pp, *dp++);
+}
+
+static inline __u8 _get_byte(void **pp)
+{
+	__u8 *s = *pp;
+	__u8 val;
+	val = *s++;
+	*pp = s;
+	return val;
+}
+
+static inline __u32 _get_word(void **pp)
+{
+	__u8 *s = *pp;
+	__u32 val;
+	val = *s++;
+	val |= (*s++ << 8);
+	val |= (*s++ << 16);
+	val |= (*s++ << 24);
+	*pp = s;
+	return val;
+}
+
+static inline __u32 _get_slice(void **pp, unsigned char *dp)
+{
+	unsigned int len, i;
+
+	len = i = _get_word(pp);
+	while (i-- > 0) *dp++ = _get_byte(pp);
+	return len;
+}
+
+/* ------------------------------------------------------------- */
+
+void b1dma_reset(avmcard *card)
+{
+	unsigned long flags;
+
+	save_flags(flags);
+	cli();
+	card->csr = 0x0;
+	b1dmaoutmeml(card->mbase+AMCC_INTCSR, card->csr);
+	b1dmaoutmeml(card->mbase+AMCC_MCSR, 0);
+	b1dmaoutmeml(card->mbase+AMCC_RXLEN, 0);
+	b1dmaoutmeml(card->mbase+AMCC_TXLEN, 0);
+
+	t1outp(card->port, 0x10, 0x00);
+	t1outp(card->port, 0x07, 0x00);
+
+	restore_flags(flags);
+
+	b1dmaoutmeml(card->mbase+AMCC_MCSR, 0);
+	udelay(10 * 1000);
+	b1dmaoutmeml(card->mbase+AMCC_MCSR, 0x0f000000); /* reset all */
+	udelay(10 * 1000);
+	b1dmaoutmeml(card->mbase+AMCC_MCSR, 0);
+	if (card->cardtype == avm_t1pci)
+		udelay(42 * 1000);
+	else
+		udelay(10 * 1000);
+}
+
+/* ------------------------------------------------------------- */
+
+int b1dma_detect(avmcard *card)
+{
+	b1dmaoutmeml(card->mbase+AMCC_MCSR, 0);
+	udelay(10 * 1000);
+	b1dmaoutmeml(card->mbase+AMCC_MCSR, 0x0f000000); /* reset all */
+	udelay(10 * 1000);
+	b1dmaoutmeml(card->mbase+AMCC_MCSR, 0);
+	udelay(42 * 1000);
+
+	b1dmaoutmeml(card->mbase+AMCC_RXLEN, 0);
+	b1dmaoutmeml(card->mbase+AMCC_TXLEN, 0);
+	card->csr = 0x0;
+	b1dmaoutmeml(card->mbase+AMCC_INTCSR, card->csr);
+
+	if (b1dmainmeml(card->mbase+AMCC_MCSR) != 0x000000E6)
+		return 1;
+
+	b1dmaoutmeml(card->mbase+AMCC_RXPTR, 0xffffffff);
+	b1dmaoutmeml(card->mbase+AMCC_TXPTR, 0xffffffff);
+	if (   b1dmainmeml(card->mbase+AMCC_RXPTR) != 0xfffffffc
+	    || b1dmainmeml(card->mbase+AMCC_TXPTR) != 0xfffffffc)
+		return 2;
+
+	b1dmaoutmeml(card->mbase+AMCC_RXPTR, 0x0);
+	b1dmaoutmeml(card->mbase+AMCC_TXPTR, 0x0);
+	if (   b1dmainmeml(card->mbase+AMCC_RXPTR) != 0x0
+	    || b1dmainmeml(card->mbase+AMCC_TXPTR) != 0x0)
+		return 3;
+
+	t1outp(card->port, 0x10, 0x00);
+	t1outp(card->port, 0x07, 0x00);
+	
+	t1outp(card->port, 0x02, 0x02);
+	t1outp(card->port, 0x03, 0x02);
+
+	if (   (t1inp(card->port, 0x02) & 0xFE) != 0x02
+	    || t1inp(card->port, 0x3) != 0x03)
+		return 4;
+
+	t1outp(card->port, 0x02, 0x00);
+	t1outp(card->port, 0x03, 0x00);
+
+	if (   (t1inp(card->port, 0x02) & 0xFE) != 0x00
+	    || t1inp(card->port, 0x3) != 0x01)
+		return 5;
+
+	return 0;
+}
+
+int t1pci_detect(avmcard *card)
+{
+	int ret;
+
+	if ((ret = b1dma_detect(card)) != 0)
+		return ret;
+	
+	/* Transputer test */
+	
+	if (   WriteReg(card, 0x80001000, 0x11) != 0
+	    || WriteReg(card, 0x80101000, 0x22) != 0
+	    || WriteReg(card, 0x80201000, 0x33) != 0
+	    || WriteReg(card, 0x80301000, 0x44) != 0)
+		return 6;
+
+	if (   ReadReg(card, 0x80001000) != 0x11
+	    || ReadReg(card, 0x80101000) != 0x22
+	    || ReadReg(card, 0x80201000) != 0x33
+	    || ReadReg(card, 0x80301000) != 0x44)
+		return 7;
+
+	if (   WriteReg(card, 0x80001000, 0x55) != 0
+	    || WriteReg(card, 0x80101000, 0x66) != 0
+	    || WriteReg(card, 0x80201000, 0x77) != 0
+	    || WriteReg(card, 0x80301000, 0x88) != 0)
+		return 8;
+
+	if (   ReadReg(card, 0x80001000) != 0x55
+	    || ReadReg(card, 0x80101000) != 0x66
+	    || ReadReg(card, 0x80201000) != 0x77
+	    || ReadReg(card, 0x80301000) != 0x88)
+		return 9;
+
+	return 0;
+}
+
+int b1pciv4_detect(avmcard *card)
+{
+	int ret, i;
+
+	if ((ret = b1dma_detect(card)) != 0)
+		return ret;
+	
+	for (i=0; i < 5 ; i++) {
+		if (WriteReg(card, 0x80A00000, 0x21) != 0)
+			return 6;
+		if ((ReadReg(card, 0x80A00000) & 0x01) != 0x01)
+			return 7;
+	}
+	for (i=0; i < 5 ; i++) {
+		if (WriteReg(card, 0x80A00000, 0x20) != 0)
+			return 8;
+		if ((ReadReg(card, 0x80A00000) & 0x01) != 0x00)
+			return 9;
+	}
+	
+	return 0;
+}
+
+/* ------------------------------------------------------------- */
+
+static void b1dma_dispatch_tx(avmcard *card)
+{
+	avmcard_dmainfo *dma = card->dma;
+	unsigned long flags;
+	struct sk_buff *skb;
+	__u8 cmd, subcmd;
+	__u16 len;
+	__u32 txlen;
+	int inint;
+	void *p;
+	
+	save_flags(flags);
+	cli();
+
+	inint = card->interrupt;
+
+	if (card->csr & EN_TX_TC_INT) { /* tx busy */
+	        restore_flags(flags);
+		return;
+	}
+
+	skb = skb_dequeue(&dma->send_queue);
+	if (!skb) {
+#ifdef CONFIG_B1DMA_DEBUG
+		printk(KERN_DEBUG "tx(%d): underrun\n", inint);
+#endif
+	        restore_flags(flags);
+		return;
+	}
+
+	len = CAPIMSG_LEN(skb->data);
+
+	if (len) {
+		cmd = CAPIMSG_COMMAND(skb->data);
+		subcmd = CAPIMSG_SUBCOMMAND(skb->data);
+
+		p = dma->sendbuf;
+
+		if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
+			__u16 dlen = CAPIMSG_DATALEN(skb->data);
+			_put_byte(&p, SEND_DATA_B3_REQ);
+			_put_slice(&p, skb->data, len);
+			_put_slice(&p, skb->data + len, dlen);
+		} else {
+			_put_byte(&p, SEND_MESSAGE);
+			_put_slice(&p, skb->data, len);
+		}
+		txlen = (__u8 *)p - (__u8 *)dma->sendbuf;
+#ifdef CONFIG_B1DMA_DEBUG
+		printk(KERN_DEBUG "tx(%d): put msg len=%d\n",
+				inint, txlen);
+#endif
+	} else {
+		txlen = skb->len-2;
+#ifdef CONFIG_B1DMA_POLLDEBUG
+		if (skb->data[2] == SEND_POLLACK)
+			printk(KERN_INFO "%s: send ack\n", card->name);
+#endif
+#ifdef CONFIG_B1DMA_DEBUG
+		printk(KERN_DEBUG "tx(%d): put 0x%x len=%d\n",
+				inint, skb->data[2], txlen);
+#endif
+		memcpy(dma->sendbuf, skb->data+2, skb->len-2);
+	}
+	txlen = (txlen + 3) & ~3;
+
+	b1dmaoutmeml(card->mbase+AMCC_TXPTR, virt_to_phys(dma->sendbuf));
+	b1dmaoutmeml(card->mbase+AMCC_TXLEN, txlen);
+
+	card->csr |= EN_TX_TC_INT;
+
+	if (!inint)
+		b1dmaoutmeml(card->mbase+AMCC_INTCSR, card->csr);
+
+	restore_flags(flags);
+	dev_kfree_skb(skb);
+}
+
+/* ------------------------------------------------------------- */
+
+static void queue_pollack(avmcard *card)
+{
+	struct sk_buff *skb;
+	void *p;
+
+	skb = alloc_skb(3, GFP_ATOMIC);
+	if (!skb) {
+		printk(KERN_CRIT "%s: no memory, lost poll ack\n",
+					card->name);
+		return;
+	}
+	p = skb->data;
+	_put_byte(&p, 0);
+	_put_byte(&p, 0);
+	_put_byte(&p, SEND_POLLACK);
+	skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
+
+	skb_queue_tail(&card->dma->send_queue, skb);
+	b1dma_dispatch_tx(card);
+}
+
+/* ------------------------------------------------------------- */
+
+static void b1dma_handle_rx(avmcard *card)
+{
+	avmctrl_info *cinfo = &card->ctrlinfo[0];
+	avmcard_dmainfo *dma = card->dma;
+	struct capi_ctr *ctrl = cinfo->capi_ctrl;
+	struct sk_buff *skb;
+	void *p = dma->recvbuf+4;
+	__u32 ApplId, MsgLen, DataB3Len, NCCI, WindowSize;
+	__u8 b1cmd =  _get_byte(&p);
+
+#ifdef CONFIG_B1DMA_DEBUG
+	printk(KERN_DEBUG "rx: 0x%x %lu\n", b1cmd, (unsigned long)dma->recvlen);
+#endif
+	
+	switch (b1cmd) {
+	case RECEIVE_DATA_B3_IND:
+
+		ApplId = (unsigned) _get_word(&p);
+		MsgLen = _get_slice(&p, card->msgbuf);
+		DataB3Len = _get_slice(&p, card->databuf);
+
+		if (MsgLen < 30) { /* not CAPI 64Bit */
+			memset(card->msgbuf+MsgLen, 0, 30-MsgLen);
+			MsgLen = 30;
+			CAPIMSG_SETLEN(card->msgbuf, 30);
+		}
+		if (!(skb = alloc_skb(DataB3Len+MsgLen, GFP_ATOMIC))) {
+			printk(KERN_ERR "%s: incoming packet dropped\n",
+					card->name);
+		} else {
+			memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
+			memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len);
+			ctrl->handle_capimsg(ctrl, ApplId, skb);
+		}
+		break;
+
+	case RECEIVE_MESSAGE:
+
+		ApplId = (unsigned) _get_word(&p);
+		MsgLen = _get_slice(&p, card->msgbuf);
+		if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
+			printk(KERN_ERR "%s: incoming packet dropped\n",
+					card->name);
+		} else {
+			memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
+			ctrl->handle_capimsg(ctrl, ApplId, skb);
+		}
+		break;
+
+	case RECEIVE_NEW_NCCI:
+
+		ApplId = _get_word(&p);
+		NCCI = _get_word(&p);
+		WindowSize = _get_word(&p);
+
+		ctrl->new_ncci(ctrl, ApplId, NCCI, WindowSize);
+
+		break;
+
+	case RECEIVE_FREE_NCCI:
+
+		ApplId = _get_word(&p);
+		NCCI = _get_word(&p);
+
+		if (NCCI != 0xffffffff)
+			ctrl->free_ncci(ctrl, ApplId, NCCI);
+		else ctrl->appl_released(ctrl, ApplId);
+		break;
+
+	case RECEIVE_START:
+#ifdef CONFIG_B1DMA_POLLDEBUG
+		printk(KERN_INFO "%s: receive poll\n", card->name);
+#endif
+		if (!suppress_pollack)
+			queue_pollack(card);
+		ctrl->resume_output(ctrl);
+		break;
+
+	case RECEIVE_STOP:
+		ctrl->suspend_output(ctrl);
+		break;
+
+	case RECEIVE_INIT:
+
+		cinfo->versionlen = _get_slice(&p, cinfo->versionbuf);
+		b1_parse_version(cinfo);
+		printk(KERN_INFO "%s: %s-card (%s) now active\n",
+		       card->name,
+		       cinfo->version[VER_CARDTYPE],
+		       cinfo->version[VER_DRIVER]);
+		ctrl->ready(ctrl);
+		break;
+
+	case RECEIVE_TASK_READY:
+		ApplId = (unsigned) _get_word(&p);
+		MsgLen = _get_slice(&p, card->msgbuf);
+		card->msgbuf[MsgLen--] = 0;
+		while (    MsgLen >= 0
+		       && (   card->msgbuf[MsgLen] == '\n'
+			   || card->msgbuf[MsgLen] == '\r'))
+			card->msgbuf[MsgLen--] = 0;
+		printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
+				card->name, ApplId, card->msgbuf);
+		break;
+
+	case RECEIVE_DEBUGMSG:
+		MsgLen = _get_slice(&p, card->msgbuf);
+		card->msgbuf[MsgLen--] = 0;
+		while (    MsgLen >= 0
+		       && (   card->msgbuf[MsgLen] == '\n'
+			   || card->msgbuf[MsgLen] == '\r'))
+			card->msgbuf[MsgLen--] = 0;
+		printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
+		break;
+
+	default:
+		printk(KERN_ERR "%s: b1dma_interrupt: 0x%x ???\n",
+				card->name, b1cmd);
+		return;
+	}
+}
+
+/* ------------------------------------------------------------- */
+
+static void b1dma_handle_interrupt(avmcard *card)
+{
+	__u32 status = b1dmainmeml(card->mbase+AMCC_INTCSR);
+	__u32 newcsr;
+
+	if ((status & ANY_S5933_INT) == 0) 
+		return;
+
+        newcsr = card->csr | (status & ALL_INT);
+	if (status & TX_TC_INT) newcsr &= ~EN_TX_TC_INT;
+	if (status & RX_TC_INT) newcsr &= ~EN_RX_TC_INT;
+	b1dmaoutmeml(card->mbase+AMCC_INTCSR, newcsr);
+
+	if ((status & RX_TC_INT) != 0) {
+		__u8 *recvbuf = card->dma->recvbuf;
+		__u32 rxlen;
+	   	if (card->dma->recvlen == 0) {
+			card->dma->recvlen = *((__u32 *)recvbuf);
+			rxlen = (card->dma->recvlen + 3) & ~3;
+			b1dmaoutmeml(card->mbase+AMCC_RXPTR,
+					virt_to_phys(recvbuf+4));
+			b1dmaoutmeml(card->mbase+AMCC_RXLEN, rxlen);
+		} else {
+			b1dma_handle_rx(card);
+	   		card->dma->recvlen = 0;
+			b1dmaoutmeml(card->mbase+AMCC_RXPTR, virt_to_phys(recvbuf));
+			b1dmaoutmeml(card->mbase+AMCC_RXLEN, 4);
+		}
+	}
+
+	if ((status & TX_TC_INT) != 0) {
+		card->csr &= ~EN_TX_TC_INT;
+	        b1dma_dispatch_tx(card);
+	} else if (card->csr & EN_TX_TC_INT) {
+		if (b1dmainmeml(card->mbase+AMCC_TXLEN) == 0) {
+			card->csr &= ~EN_TX_TC_INT;
+			b1dma_dispatch_tx(card);
+		}
+	}
+	b1dmaoutmeml(card->mbase+AMCC_INTCSR, card->csr);
+}
+
+void b1dma_interrupt(int interrupt, void *devptr, struct pt_regs *regs)
+{
+	avmcard *card;
+
+	card = (avmcard *) devptr;
+
+	if (!card) {
+		printk(KERN_WARNING "b1dma: interrupt: wrong device\n");
+		return;
+	}
+	if (card->interrupt) {
+		printk(KERN_ERR "%s: reentering interrupt hander\n", card->name);
+		return;
+	}
+
+	card->interrupt = 1;
+
+	b1dma_handle_interrupt(card);
+
+	card->interrupt = 0;
+}
+
+/* ------------------------------------------------------------- */
+
+static int b1dma_loaded(avmcard *card)
+{
+	unsigned long stop;
+	unsigned char ans;
+	unsigned long tout = 2;
+	unsigned int base = card->port;
+
+	for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) {
+		if (b1_tx_empty(base))
+			break;
+	}
+	if (!b1_tx_empty(base)) {
+		printk(KERN_ERR "%s: b1dma_loaded: tx err, corrupted t4 file ?\n",
+				card->name);
+		return 0;
+	}
+	b1_put_byte(base, SEND_POLLACK);
+	for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) {
+		if (b1_rx_full(base)) {
+			if ((ans = b1_get_byte(base)) == RECEIVE_POLLDWORD) {
+				return 1;
+			}
+			printk(KERN_ERR "%s: b1dma_loaded: got 0x%x, firmware not running in dword mode\n", card->name, ans);
+			return 0;
+		}
+	}
+	printk(KERN_ERR "%s: b1dma_loaded: firmware not running\n", card->name);
+	return 0;
+}
+
+/* ------------------------------------------------------------- */
+
+static void b1dma_send_init(avmcard *card)
+{
+	struct sk_buff *skb;
+	void *p;
+
+	skb = alloc_skb(15, GFP_ATOMIC);
+	if (!skb) {
+		printk(KERN_CRIT "%s: no memory, lost register appl.\n",
+					card->name);
+		return;
+	}
+	p = skb->data;
+	_put_byte(&p, 0);
+	_put_byte(&p, 0);
+	_put_byte(&p, SEND_INIT);
+	_put_word(&p, AVM_NAPPS);
+	_put_word(&p, AVM_NCCI_PER_CHANNEL*30);
+	_put_word(&p, card->cardnr - 1);
+	skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
+
+	skb_queue_tail(&card->dma->send_queue, skb);
+	b1dma_dispatch_tx(card);
+}
+
+int b1dma_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	unsigned long flags;
+	int retval;
+
+	b1dma_reset(card);
+
+	if ((retval = b1_load_t4file(card, &data->firmware))) {
+		b1dma_reset(card);
+		printk(KERN_ERR "%s: failed to load t4file!!\n",
+					card->name);
+		return retval;
+	}
+
+	if (data->configuration.len > 0 && data->configuration.data) {
+		if ((retval = b1_load_config(card, &data->configuration))) {
+			b1dma_reset(card);
+			printk(KERN_ERR "%s: failed to load config!!\n",
+					card->name);
+			return retval;
+		}
+	}
+
+	if (!b1dma_loaded(card)) {
+		b1dma_reset(card);
+		printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
+		return -EIO;
+	}
+
+	save_flags(flags);
+	cli();
+
+	card->csr = AVM_FLAG;
+	b1dmaoutmeml(card->mbase+AMCC_INTCSR, card->csr);
+	b1dmaoutmeml(card->mbase+AMCC_MCSR,
+		EN_A2P_TRANSFERS|EN_P2A_TRANSFERS
+		|A2P_HI_PRIORITY|P2A_HI_PRIORITY
+		|RESET_A2P_FLAGS|RESET_P2A_FLAGS);
+	t1outp(card->port, 0x07, 0x30);
+	t1outp(card->port, 0x10, 0xF0);
+
+	card->dma->recvlen = 0;
+	b1dmaoutmeml(card->mbase+AMCC_RXPTR, virt_to_phys(card->dma->recvbuf));
+	b1dmaoutmeml(card->mbase+AMCC_RXLEN, 4);
+	card->csr |= EN_RX_TC_INT;
+	b1dmaoutmeml(card->mbase+AMCC_INTCSR, card->csr);
+	restore_flags(flags);
+
+        b1dma_send_init(card);
+
+	return 0;
+}
+
+void b1dma_reset_ctr(struct capi_ctr *ctrl)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+
+ 	b1dma_reset(card);
+
+	memset(cinfo->version, 0, sizeof(cinfo->version));
+	ctrl->reseted(ctrl);
+}
+
+
+/* ------------------------------------------------------------- */
+
+
+void b1dma_register_appl(struct capi_ctr *ctrl,
+				__u16 appl,
+				capi_register_params *rp)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	struct sk_buff *skb;
+	int want = rp->level3cnt;
+	int nconn;
+	void *p;
+
+	if (want > 0) nconn = want;
+	else nconn = ctrl->profile.nbchannel * -want;
+	if (nconn == 0) nconn = ctrl->profile.nbchannel;
+
+	skb = alloc_skb(23, GFP_ATOMIC);
+	if (!skb) {
+		printk(KERN_CRIT "%s: no memory, lost register appl.\n",
+					card->name);
+		return;
+	}
+	p = skb->data;
+	_put_byte(&p, 0);
+	_put_byte(&p, 0);
+	_put_byte(&p, SEND_REGISTER);
+	_put_word(&p, appl);
+	_put_word(&p, 1024 * (nconn+1));
+	_put_word(&p, nconn);
+	_put_word(&p, rp->datablkcnt);
+	_put_word(&p, rp->datablklen);
+	skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
+
+	skb_queue_tail(&card->dma->send_queue, skb);
+	b1dma_dispatch_tx(card);
+
+	ctrl->appl_registered(ctrl, appl);
+}
+
+/* ------------------------------------------------------------- */
+
+void b1dma_release_appl(struct capi_ctr *ctrl, __u16 appl)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	struct sk_buff *skb;
+	void *p;
+
+	skb = alloc_skb(7, GFP_ATOMIC);
+	if (!skb) {
+		printk(KERN_CRIT "%s: no memory, lost release appl.\n",
+					card->name);
+		return;
+	}
+	p = skb->data;
+	_put_byte(&p, 0);
+	_put_byte(&p, 0);
+	_put_byte(&p, SEND_RELEASE);
+	_put_word(&p, appl);
+
+	skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
+	skb_queue_tail(&card->dma->send_queue, skb);
+	b1dma_dispatch_tx(card);
+}
+
+/* ------------------------------------------------------------- */
+
+void b1dma_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	skb_queue_tail(&card->dma->send_queue, skb);
+	b1dma_dispatch_tx(card);
+}
+
+/* ------------------------------------------------------------- */
+
+int b1dmactl_read_proc(char *page, char **start, off_t off,
+        		int count, int *eof, struct capi_ctr *ctrl)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	unsigned long flags;
+	__u8 flag;
+	int len = 0;
+	char *s;
+	__u32 txaddr, txlen, rxaddr, rxlen, csr;
+
+	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
+	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
+	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
+	len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase);
+	switch (card->cardtype) {
+	case avm_b1isa: s = "B1 ISA"; break;
+	case avm_b1pci: s = "B1 PCI"; break;
+	case avm_b1pcmcia: s = "B1 PCMCIA"; break;
+	case avm_m1: s = "M1"; break;
+	case avm_m2: s = "M2"; break;
+	case avm_t1isa: s = "T1 ISA (HEMA)"; break;
+	case avm_t1pci: s = "T1 PCI"; break;
+	case avm_c4: s = "C4"; break;
+	default: s = "???"; break;
+	}
+	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	if ((s = cinfo->version[VER_DRIVER]) != 0)
+	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+	if ((s = cinfo->version[VER_CARDTYPE]) != 0)
+	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+	if ((s = cinfo->version[VER_SERIAL]) != 0)
+	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+
+	if (card->cardtype != avm_m1) {
+        	flag = ((__u8 *)(ctrl->profile.manu))[3];
+        	if (flag)
+			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			"protocol",
+			(flag & 0x01) ? " DSS1" : "",
+			(flag & 0x02) ? " CT1" : "",
+			(flag & 0x04) ? " VN3" : "",
+			(flag & 0x08) ? " NI1" : "",
+			(flag & 0x10) ? " AUSTEL" : "",
+			(flag & 0x20) ? " ESS" : "",
+			(flag & 0x40) ? " 1TR6" : ""
+			);
+	}
+	if (card->cardtype != avm_m1) {
+        	flag = ((__u8 *)(ctrl->profile.manu))[5];
+		if (flag)
+			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			"linetype",
+			(flag & 0x01) ? " point to point" : "",
+			(flag & 0x02) ? " point to multipoint" : "",
+			(flag & 0x08) ? " leased line without D-channel" : "",
+			(flag & 0x04) ? " leased line with D-channel" : ""
+			);
+	}
+	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
+
+	save_flags(flags);
+	cli();
+
+	txaddr = (__u32)phys_to_virt(b1dmainmeml(card->mbase+0x2c));
+	txaddr -= (__u32)card->dma->sendbuf;
+	txlen  = b1dmainmeml(card->mbase+0x30);
+
+	rxaddr = (__u32)phys_to_virt(b1dmainmeml(card->mbase+0x24));
+	rxaddr -= (__u32)card->dma->recvbuf;
+	rxlen  = b1dmainmeml(card->mbase+0x28);
+
+	csr  = b1dmainmeml(card->mbase+AMCC_INTCSR);
+
+	restore_flags(flags);
+
+        len += sprintf(page+len, "%-16s 0x%lx\n",
+				"csr (cached)", (unsigned long)card->csr);
+        len += sprintf(page+len, "%-16s 0x%lx\n",
+				"csr", (unsigned long)csr);
+        len += sprintf(page+len, "%-16s %lu\n",
+				"txoff", (unsigned long)txaddr);
+        len += sprintf(page+len, "%-16s %lu\n",
+				"txlen", (unsigned long)txlen);
+        len += sprintf(page+len, "%-16s %lu\n",
+				"rxoff", (unsigned long)rxaddr);
+        len += sprintf(page+len, "%-16s %lu\n",
+				"rxlen", (unsigned long)rxlen);
+
+	if (off+count >= len)
+	   *eof = 1;
+	if (len < off)
+           return 0;
+	*start = page + off;
+	return ((count < len-off) ? count : len-off);
+}
+
+/* ------------------------------------------------------------- */
+
+EXPORT_SYMBOL(b1dma_reset);
+EXPORT_SYMBOL(t1pci_detect);
+EXPORT_SYMBOL(b1pciv4_detect);
+EXPORT_SYMBOL(b1dma_interrupt);
+
+EXPORT_SYMBOL(b1dma_load_firmware);
+EXPORT_SYMBOL(b1dma_reset_ctr);
+EXPORT_SYMBOL(b1dma_register_appl);
+EXPORT_SYMBOL(b1dma_release_appl);
+EXPORT_SYMBOL(b1dma_send_message);
+EXPORT_SYMBOL(b1dmactl_read_proc);
+
+#ifdef MODULE
+#define b1dma_init init_module
+void cleanup_module(void);
+#endif
+
+int b1dma_init(void)
+{
+	char *p;
+	char rev[10];
+
+	if ((p = strchr(revision, ':'))) {
+		strncpy(rev, p + 1, sizeof(rev));
+		p = strchr(rev, '$');
+		*p = 0;
+	} else
+		strcpy(rev, "1.0");
+
+	printk(KERN_INFO "b1dma: revision %s\n", rev);
+
+	return 0;
+}
+
+#ifdef MODULE
+void cleanup_module(void)
+{
+}
+#endif