[deliverable/linux.git] / drivers / isdn / act2000 / act2000_isa.c

/* $Id: act2000_isa.c,v 1.11.6.3 2001/09/23 22:24:32 kai Exp $
 *
 * ISDN lowlevel-module for the IBM ISDN-S0 Active 2000 (ISA-Version).
 *
 * Author       Fritz Elfert
 * Copyright    by Fritz Elfert      <fritz@isdn4linux.de>
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 *
 * Thanks to Friedemann Baitinger and IBM Germany
 *
 */

#include "act2000.h"
#include "act2000_isa.h"
#include "capi.h"

/*
 * Reset Controller, then try to read the Card's signature.
 + Return:
 *   1 = Signature found.
 *   0 = Signature not found.
 */
static int
act2000_isa_reset(unsigned short portbase)
{
	unsigned char reg;
	int i;
	int found;
	int serial = 0;

	found = 0;
	if ((reg = inb(portbase + ISA_COR)) != 0xff) {
		outb(reg | ISA_COR_RESET, portbase + ISA_COR);
		mdelay(10);
		outb(reg, portbase + ISA_COR);
		mdelay(10);

		for (i = 0; i < 16; i++) {
			if (inb(portbase + ISA_ISR) & ISA_ISR_SERIAL)
				serial |= 0x10000;
			serial >>= 1;
		}
		if (serial == ISA_SER_ID)
			found++;
	}
	return found;
}

int
act2000_isa_detect(unsigned short portbase)
{
	int ret = 0;

	if (request_region(portbase, ACT2000_PORTLEN, "act2000isa")) {
		ret = act2000_isa_reset(portbase);
		release_region(portbase, ISA_REGION);
	}
	return ret;
}

static irqreturn_t
act2000_isa_interrupt(int dummy, void *dev_id)
{
	act2000_card *card = dev_id;
	u_char istatus;

	istatus = (inb(ISA_PORT_ISR) & 0x07);
	if (istatus & ISA_ISR_OUT) {
		/* RX fifo has data */
		istatus &= ISA_ISR_OUT_MASK;
		outb(0, ISA_PORT_SIS);
		act2000_isa_receive(card);
		outb(ISA_SIS_INT, ISA_PORT_SIS);
	}
	if (istatus & ISA_ISR_ERR) {
		/* Error Interrupt */
		istatus &= ISA_ISR_ERR_MASK;
		printk(KERN_WARNING "act2000: errIRQ\n");
	}
	if (istatus)
		printk(KERN_DEBUG "act2000: ?IRQ %d %02x\n", card->irq, istatus);
	return IRQ_HANDLED;
}

static void
act2000_isa_select_irq(act2000_card *card)
{
	unsigned char reg;

	reg = (inb(ISA_PORT_COR) & ~ISA_COR_IRQOFF) | ISA_COR_PERR;
	switch (card->irq) {
	case 3:
		reg = ISA_COR_IRQ03;
		break;
	case 5:
		reg = ISA_COR_IRQ05;
		break;
	case 7:
		reg = ISA_COR_IRQ07;
		break;
	case 10:
		reg = ISA_COR_IRQ10;
		break;
	case 11:
		reg = ISA_COR_IRQ11;
		break;
	case 12:
		reg = ISA_COR_IRQ12;
		break;
	case 15:
		reg = ISA_COR_IRQ15;
		break;
	}
	outb(reg, ISA_PORT_COR);
}

static void
act2000_isa_enable_irq(act2000_card *card)
{
	act2000_isa_select_irq(card);
	/* Enable READ irq */
	outb(ISA_SIS_INT, ISA_PORT_SIS);
}

/*
 * Install interrupt handler, enable irq on card.
 * If irq is -1, choose next free irq, else irq is given explicitly.
 */
int
act2000_isa_config_irq(act2000_card *card, short irq)
{
	int old_irq;

	if (card->flags & ACT2000_FLAGS_IVALID) {
		free_irq(card->irq, card);
	}
	card->flags &= ~ACT2000_FLAGS_IVALID;
	outb(ISA_COR_IRQOFF, ISA_PORT_COR);
	if (!irq)
		return 0;

	old_irq = card->irq;
	card->irq = irq;
	if (request_irq(irq, &act2000_isa_interrupt, 0, card->regname, card)) {
		card->irq = old_irq;
		card->flags |= ACT2000_FLAGS_IVALID;
		printk(KERN_WARNING
		       "act2000: Could not request irq %d\n", irq);
		return -EBUSY;
	} else {
		act2000_isa_select_irq(card);
		/* Disable READ and WRITE irq */
		outb(0, ISA_PORT_SIS);
		outb(0, ISA_PORT_SOS);
	}
	return 0;
}

int
act2000_isa_config_port(act2000_card *card, unsigned short portbase)
{
	if (card->flags & ACT2000_FLAGS_PVALID) {
		release_region(card->port, ISA_REGION);
		card->flags &= ~ACT2000_FLAGS_PVALID;
	}
	if (request_region(portbase, ACT2000_PORTLEN, card->regname) == NULL)
		return -EBUSY;
	else {
		card->port = portbase;
		card->flags |= ACT2000_FLAGS_PVALID;
		return 0;
	}
}

/*
 * Release ressources, used by an adaptor.
 */
void
act2000_isa_release(act2000_card *card)
{
	unsigned long flags;

	spin_lock_irqsave(&card->lock, flags);
	if (card->flags & ACT2000_FLAGS_IVALID)
		free_irq(card->irq, card);

	card->flags &= ~ACT2000_FLAGS_IVALID;
	if (card->flags & ACT2000_FLAGS_PVALID)
		release_region(card->port, ISA_REGION);
	card->flags &= ~ACT2000_FLAGS_PVALID;
	spin_unlock_irqrestore(&card->lock, flags);
}

static int
act2000_isa_writeb(act2000_card *card, u_char data)
{
	u_char timeout = 40;

	while (timeout) {
		if (inb(ISA_PORT_SOS) & ISA_SOS_READY) {
			outb(data, ISA_PORT_SDO);
			return 0;
		} else {
			timeout--;
			udelay(10);
		}
	}
	return 1;
}

static int
act2000_isa_readb(act2000_card *card, u_char *data)
{
	u_char timeout = 40;

	while (timeout) {
		if (inb(ISA_PORT_SIS) & ISA_SIS_READY) {
			*data = inb(ISA_PORT_SDI);
			return 0;
		} else {
			timeout--;
			udelay(10);
		}
	}
	return 1;
}

void
act2000_isa_receive(act2000_card *card)
{
	u_char c;

	if (test_and_set_bit(ACT2000_LOCK_RX, (void *) &card->ilock) != 0)
		return;
	while (!act2000_isa_readb(card, &c)) {
		if (card->idat.isa.rcvidx < 8) {
			card->idat.isa.rcvhdr[card->idat.isa.rcvidx++] = c;
			if (card->idat.isa.rcvidx == 8) {
				int valid = actcapi_chkhdr(card, (actcapi_msghdr *)&card->idat.isa.rcvhdr);

				if (valid) {
					card->idat.isa.rcvlen = ((actcapi_msghdr *)&card->idat.isa.rcvhdr)->len;
					card->idat.isa.rcvskb = dev_alloc_skb(card->idat.isa.rcvlen);
					if (card->idat.isa.rcvskb == NULL) {
						card->idat.isa.rcvignore = 1;
						printk(KERN_WARNING
						       "act2000_isa_receive: no memory\n");
						test_and_clear_bit(ACT2000_LOCK_RX, (void *) &card->ilock);
						return;
					}
					memcpy(skb_put(card->idat.isa.rcvskb, 8), card->idat.isa.rcvhdr, 8);
					card->idat.isa.rcvptr = skb_put(card->idat.isa.rcvskb, card->idat.isa.rcvlen - 8);
				} else {
					card->idat.isa.rcvidx = 0;
					printk(KERN_WARNING
					       "act2000_isa_receive: Invalid CAPI msg\n");
					{
						int i; __u8 *p; __u8 *t; __u8 tmp[30];
						for (i = 0, p = (__u8 *)&card->idat.isa.rcvhdr, t = tmp; i < 8; i++)
							t += sprintf(t, "%02x ", *(p++));
						printk(KERN_WARNING "act2000_isa_receive: %s\n", tmp);
					}
				}
			}
		} else {
			if (!card->idat.isa.rcvignore)
				*card->idat.isa.rcvptr++ = c;
			if (++card->idat.isa.rcvidx >= card->idat.isa.rcvlen) {
				if (!card->idat.isa.rcvignore) {
					skb_queue_tail(&card->rcvq, card->idat.isa.rcvskb);
					act2000_schedule_rx(card);
				}
				card->idat.isa.rcvidx = 0;
				card->idat.isa.rcvlen = 8;
				card->idat.isa.rcvignore = 0;
				card->idat.isa.rcvskb = NULL;
				card->idat.isa.rcvptr = card->idat.isa.rcvhdr;
			}
		}
	}
	if (!(card->flags & ACT2000_FLAGS_IVALID)) {
		/* In polling mode, schedule myself */
		if ((card->idat.isa.rcvidx) &&
		    (card->idat.isa.rcvignore ||
		     (card->idat.isa.rcvidx < card->idat.isa.rcvlen)))
			act2000_schedule_poll(card);
	}
	test_and_clear_bit(ACT2000_LOCK_RX, (void *) &card->ilock);
}

void
act2000_isa_send(act2000_card *card)
{
	unsigned long flags;
	struct sk_buff *skb;
	actcapi_msg *msg;
	int l;

	if (test_and_set_bit(ACT2000_LOCK_TX, (void *) &card->ilock) != 0)
		return;
	while (1) {
		spin_lock_irqsave(&card->lock, flags);
		if (!(card->sbuf)) {
			if ((card->sbuf = skb_dequeue(&card->sndq))) {
				card->ack_msg = card->sbuf->data;
				msg = (actcapi_msg *)card->sbuf->data;
				if ((msg->hdr.cmd.cmd == 0x86) &&
				    (msg->hdr.cmd.subcmd == 0)) {
					/* Save flags in message */
					card->need_b3ack = msg->msg.data_b3_req.flags;
					msg->msg.data_b3_req.flags = 0;
				}
			}
		}
		spin_unlock_irqrestore(&card->lock, flags);
		if (!(card->sbuf)) {
			/* No more data to send */
			test_and_clear_bit(ACT2000_LOCK_TX, (void *) &card->ilock);
			return;
		}
		skb = card->sbuf;
		l = 0;
		while (skb->len) {
			if (act2000_isa_writeb(card, *(skb->data))) {
				/* Fifo is full, but more data to send */
				test_and_clear_bit(ACT2000_LOCK_TX, (void *) &card->ilock);
				/* Schedule myself */
				act2000_schedule_tx(card);
				return;
			}
			skb_pull(skb, 1);
			l++;
		}
		msg = (actcapi_msg *)card->ack_msg;
		if ((msg->hdr.cmd.cmd == 0x86) &&
		    (msg->hdr.cmd.subcmd == 0)) {
			/*
			 * If it's user data, reset data-ptr
			 * and put skb into ackq.
			 */
			skb->data = card->ack_msg;
			/* Restore flags in message */
			msg->msg.data_b3_req.flags = card->need_b3ack;
			skb_queue_tail(&card->ackq, skb);
		} else
			dev_kfree_skb(skb);
		card->sbuf = NULL;
	}
}

/*
 * Get firmware ID, check for 'ISDN' signature.
 */
static int
act2000_isa_getid(act2000_card *card)
{

	act2000_fwid fid;
	u_char *p = (u_char *)&fid;
	int count = 0;

	while (1) {
		if (count > 510)
			return -EPROTO;
		if (act2000_isa_readb(card, p++))
			break;
		count++;
	}
	if (count <= 20) {
		printk(KERN_WARNING "act2000: No Firmware-ID!\n");
		return -ETIME;
	}
	*p = '\0';
	fid.revlen[0] = '\0';
	if (strcmp(fid.isdn, "ISDN")) {
		printk(KERN_WARNING "act2000: Wrong Firmware-ID!\n");
		return -EPROTO;
	}
	if ((p = strchr(fid.revision, '\n')))
		*p = '\0';
	printk(KERN_INFO "act2000: Firmware-ID: %s\n", fid.revision);
	if (card->flags & ACT2000_FLAGS_IVALID) {
		printk(KERN_DEBUG "Enabling Interrupts ...\n");
		act2000_isa_enable_irq(card);
	}
	return 0;
}

/*
 * Download microcode into card, check Firmware signature.
 */
int
act2000_isa_download(act2000_card *card, act2000_ddef __user *cb)
{
	unsigned int length;
	int l;
	int c;
	long timeout;
	u_char *b;
	u_char __user *p;
	u_char *buf;
	act2000_ddef cblock;

	if (!act2000_isa_reset(card->port))
		return -ENXIO;
	msleep_interruptible(500);
	if (copy_from_user(&cblock, cb, sizeof(cblock)))
		return -EFAULT;
	length = cblock.length;
	p = cblock.buffer;
	if (!access_ok(VERIFY_READ, p, length))
		return -EFAULT;
	buf = kmalloc(1024, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;
	timeout = 0;
	while (length) {
		l = (length > 1024) ? 1024 : length;
		c = 0;
		b = buf;
		if (copy_from_user(buf, p, l)) {
			kfree(buf);
			return -EFAULT;
		}
		while (c < l) {
			if (act2000_isa_writeb(card, *b++)) {
				printk(KERN_WARNING
				       "act2000: loader timed out"
				       " len=%d c=%d\n", length, c);
				kfree(buf);
				return -ETIME;
			}
			c++;
		}
		length -= l;
		p += l;
	}
	kfree(buf);
	msleep_interruptible(500);
	return (act2000_isa_getid(card));
}
Commit	Line	Data
1da177e4 LT	1	/* $Id: act2000_isa.c,v 1.11.6.3 2001/09/23 22:24:32 kai Exp $
	2	*
	3	* ISDN lowlevel-module for the IBM ISDN-S0 Active 2000 (ISA-Version).
	4	*
	5	* Author Fritz Elfert
	6	* Copyright by Fritz Elfert <fritz@isdn4linux.de>
475be4d8	7	*
1da177e4 LT	8	* This software may be used and distributed according to the terms
	9	* of the GNU General Public License, incorporated herein by reference.
	10	*
	11	* Thanks to Friedemann Baitinger and IBM Germany
	12	*
	13	*/
	14
	15	#include "act2000.h"
	16	#include "act2000_isa.h"
	17	#include "capi.h"
	18
1da177e4 LT	19	/*
	20	* Reset Controller, then try to read the Card's signature.
	21	+ Return:
	22	* 1 = Signature found.
	23	* 0 = Signature not found.
	24	*/
	25	static int
	26	act2000_isa_reset(unsigned short portbase)
	27	{
475be4d8 JP	28	unsigned char reg;
	29	int i;
	30	int found;
	31	int serial = 0;
	32
	33	found = 0;
	34	if ((reg = inb(portbase + ISA_COR)) != 0xff) {
	35	outb(reg \| ISA_COR_RESET, portbase + ISA_COR);
	36	mdelay(10);
	37	outb(reg, portbase + ISA_COR);
	38	mdelay(10);
	39
	40	for (i = 0; i < 16; i++) {
	41	if (inb(portbase + ISA_ISR) & ISA_ISR_SERIAL)
	42	serial \|= 0x10000;
	43	serial >>= 1;
	44	}
	45	if (serial == ISA_SER_ID)
	46	found++;
	47	}
	48	return found;
1da177e4 LT	49	}
	50
	51	int
	52	act2000_isa_detect(unsigned short portbase)
	53	{
475be4d8	54	int ret = 0;
1da177e4 LT	55
1da177e4 LT	56	if (request_region(portbase, ACT2000_PORTLEN, "act2000isa")) {
475be4d8	57	ret = act2000_isa_reset(portbase);
1da177e4 LT	58	release_region(portbase, ISA_REGION);
1da177e4 LT	59	}
475be4d8	60	return ret;
1da177e4 LT	61	}
	62
	63	static irqreturn_t
246f93f5	64	act2000_isa_interrupt(int dummy, void *dev_id)
1da177e4	65	{
475be4d8 JP	66	act2000_card *card = dev_id;
475be4d8 JP	67	u_char istatus;
1da177e4	68
475be4d8 JP	69	istatus = (inb(ISA_PORT_ISR) & 0x07);
	70	if (istatus & ISA_ISR_OUT) {
	71	/* RX fifo has data */
1da177e4 LT	72	istatus &= ISA_ISR_OUT_MASK;
	73	outb(0, ISA_PORT_SIS);
	74	act2000_isa_receive(card);
	75	outb(ISA_SIS_INT, ISA_PORT_SIS);
475be4d8 JP	76	}
	77	if (istatus & ISA_ISR_ERR) {
	78	/* Error Interrupt */
1da177e4	79	istatus &= ISA_ISR_ERR_MASK;
475be4d8 JP	80	printk(KERN_WARNING "act2000: errIRQ\n");
475be4d8 JP	81	}
1da177e4	82	if (istatus)
246f93f5	83	printk(KERN_DEBUG "act2000: ?IRQ %d %02x\n", card->irq, istatus);
1da177e4 LT	84	return IRQ_HANDLED;
	85	}
	86
	87	static void
475be4d8	88	act2000_isa_select_irq(act2000_card *card)
1da177e4 LT	89	{
	90	unsigned char reg;
	91
	92	reg = (inb(ISA_PORT_COR) & ~ISA_COR_IRQOFF) \| ISA_COR_PERR;
	93	switch (card->irq) {
475be4d8 JP	94	case 3:
	95	reg = ISA_COR_IRQ03;
	96	break;
	97	case 5:
	98	reg = ISA_COR_IRQ05;
	99	break;
	100	case 7:
	101	reg = ISA_COR_IRQ07;
	102	break;
	103	case 10:
	104	reg = ISA_COR_IRQ10;
	105	break;
	106	case 11:
	107	reg = ISA_COR_IRQ11;
	108	break;
	109	case 12:
	110	reg = ISA_COR_IRQ12;
	111	break;
	112	case 15:
	113	reg = ISA_COR_IRQ15;
	114	break;
1da177e4 LT	115	}
	116	outb(reg, ISA_PORT_COR);
	117	}
	118
	119	static void
475be4d8	120	act2000_isa_enable_irq(act2000_card *card)
1da177e4 LT	121	{
	122	act2000_isa_select_irq(card);
	123	/* Enable READ irq */
	124	outb(ISA_SIS_INT, ISA_PORT_SIS);
	125	}
	126
	127	/*
	128	* Install interrupt handler, enable irq on card.
c03983ac	129	* If irq is -1, choose next free irq, else irq is given explicitly.
1da177e4 LT	130	*/
1da177e4 LT	131	int
475be4d8	132	act2000_isa_config_irq(act2000_card *card, short irq)
1da177e4	133	{
246f93f5 JG	134	int old_irq;
246f93f5 JG	135
475be4d8 JP	136	if (card->flags & ACT2000_FLAGS_IVALID) {
	137	free_irq(card->irq, card);
	138	}
	139	card->flags &= ~ACT2000_FLAGS_IVALID;
	140	outb(ISA_COR_IRQOFF, ISA_PORT_COR);
	141	if (!irq)
	142	return 0;
1da177e4	143
246f93f5 JG	144	old_irq = card->irq;
	145	card->irq = irq;
	146	if (request_irq(irq, &act2000_isa_interrupt, 0, card->regname, card)) {
	147	card->irq = old_irq;
1da177e4	148	card->flags \|= ACT2000_FLAGS_IVALID;
475be4d8 JP	149	printk(KERN_WARNING
	150	"act2000: Could not request irq %d\n", irq);
	151	return -EBUSY;
	152	} else {
1da177e4	153	act2000_isa_select_irq(card);
475be4d8 JP	154	/* Disable READ and WRITE irq */
	155	outb(0, ISA_PORT_SIS);
	156	outb(0, ISA_PORT_SOS);
	157	}
	158	return 0;
1da177e4 LT	159	}
	160
	161	int
475be4d8	162	act2000_isa_config_port(act2000_card *card, unsigned short portbase)
1da177e4	163	{
475be4d8 JP	164	if (card->flags & ACT2000_FLAGS_PVALID) {
	165	release_region(card->port, ISA_REGION);
	166	card->flags &= ~ACT2000_FLAGS_PVALID;
	167	}
1da177e4 LT	168	if (request_region(portbase, ACT2000_PORTLEN, card->regname) == NULL)
	169	return -EBUSY;
	170	else {
475be4d8 JP	171	card->port = portbase;
	172	card->flags \|= ACT2000_FLAGS_PVALID;
	173	return 0;
	174	}
1da177e4 LT	175	}
	176
	177	/*
	178	* Release ressources, used by an adaptor.
	179	*/
	180	void
475be4d8	181	act2000_isa_release(act2000_card *card)
1da177e4	182	{
475be4d8	183	unsigned long flags;
1da177e4	184
475be4d8 JP	185	spin_lock_irqsave(&card->lock, flags);
	186	if (card->flags & ACT2000_FLAGS_IVALID)
	187	free_irq(card->irq, card);
d87dbede	188
475be4d8 JP	189	card->flags &= ~ACT2000_FLAGS_IVALID;
	190	if (card->flags & ACT2000_FLAGS_PVALID)
	191	release_region(card->port, ISA_REGION);
	192	card->flags &= ~ACT2000_FLAGS_PVALID;
	193	spin_unlock_irqrestore(&card->lock, flags);
1da177e4 LT	194	}
	195
	196	static int
475be4d8	197	act2000_isa_writeb(act2000_card *card, u_char data)
1da177e4	198	{
475be4d8 JP	199	u_char timeout = 40;
	200
	201	while (timeout) {
	202	if (inb(ISA_PORT_SOS) & ISA_SOS_READY) {
	203	outb(data, ISA_PORT_SDO);
	204	return 0;
	205	} else {
	206	timeout--;
	207	udelay(10);
	208	}
	209	}
	210	return 1;
1da177e4 LT	211	}
	212
	213	static int
475be4d8	214	act2000_isa_readb(act2000_card card, u_char data)
1da177e4	215	{
475be4d8 JP	216	u_char timeout = 40;
	217
	218	while (timeout) {
	219	if (inb(ISA_PORT_SIS) & ISA_SIS_READY) {
	220	*data = inb(ISA_PORT_SDI);
	221	return 0;
	222	} else {
	223	timeout--;
	224	udelay(10);
	225	}
	226	}
	227	return 1;
1da177e4 LT	228	}
	229
	230	void
	231	act2000_isa_receive(act2000_card *card)
	232	{
	233	u_char c;
	234
475be4d8	235	if (test_and_set_bit(ACT2000_LOCK_RX, (void *) &card->ilock) != 0)
1da177e4 LT	236	return;
	237	while (!act2000_isa_readb(card, &c)) {
	238	if (card->idat.isa.rcvidx < 8) {
475be4d8	239	card->idat.isa.rcvhdr[card->idat.isa.rcvidx++] = c;
1da177e4 LT	240	if (card->idat.isa.rcvidx == 8) {
	241	int valid = actcapi_chkhdr(card, (actcapi_msghdr *)&card->idat.isa.rcvhdr);
	242
	243	if (valid) {
	244	card->idat.isa.rcvlen = ((actcapi_msghdr *)&card->idat.isa.rcvhdr)->len;
	245	card->idat.isa.rcvskb = dev_alloc_skb(card->idat.isa.rcvlen);
	246	if (card->idat.isa.rcvskb == NULL) {
	247	card->idat.isa.rcvignore = 1;
	248	printk(KERN_WARNING
	249	"act2000_isa_receive: no memory\n");
	250	test_and_clear_bit(ACT2000_LOCK_RX, (void *) &card->ilock);
	251	return;
	252	}
	253	memcpy(skb_put(card->idat.isa.rcvskb, 8), card->idat.isa.rcvhdr, 8);
	254	card->idat.isa.rcvptr = skb_put(card->idat.isa.rcvskb, card->idat.isa.rcvlen - 8);
	255	} else {
	256	card->idat.isa.rcvidx = 0;
	257	printk(KERN_WARNING
	258	"act2000_isa_receive: Invalid CAPI msg\n");
	259	{
cf80063a HE	260	int i; __u8 p; __u8 t; __u8 tmp[30];
	261	for (i = 0, p = (__u8 *)&card->idat.isa.rcvhdr, t = tmp; i < 8; i++)
	262	t += sprintf(t, "%02x ", *(p++));
1da177e4 LT	263	printk(KERN_WARNING "act2000_isa_receive: %s\n", tmp);
	264	}
	265	}
	266	}
	267	} else {
	268	if (!card->idat.isa.rcvignore)
	269	*card->idat.isa.rcvptr++ = c;
	270	if (++card->idat.isa.rcvidx >= card->idat.isa.rcvlen) {
	271	if (!card->idat.isa.rcvignore) {
	272	skb_queue_tail(&card->rcvq, card->idat.isa.rcvskb);
	273	act2000_schedule_rx(card);
	274	}
	275	card->idat.isa.rcvidx = 0;
	276	card->idat.isa.rcvlen = 8;
	277	card->idat.isa.rcvignore = 0;
	278	card->idat.isa.rcvskb = NULL;
	279	card->idat.isa.rcvptr = card->idat.isa.rcvhdr;
	280	}
	281	}
	282	}
	283	if (!(card->flags & ACT2000_FLAGS_IVALID)) {
	284	/* In polling mode, schedule myself */
	285	if ((card->idat.isa.rcvidx) &&
	286	(card->idat.isa.rcvignore \|\|
	287	(card->idat.isa.rcvidx < card->idat.isa.rcvlen)))
	288	act2000_schedule_poll(card);
	289	}
	290	test_and_clear_bit(ACT2000_LOCK_RX, (void *) &card->ilock);
	291	}
	292
	293	void
475be4d8	294	act2000_isa_send(act2000_card *card)
1da177e4 LT	295	{
	296	unsigned long flags;
	297	struct sk_buff *skb;
	298	actcapi_msg *msg;
	299	int l;
	300
475be4d8	301	if (test_and_set_bit(ACT2000_LOCK_TX, (void *) &card->ilock) != 0)
1da177e4 LT	302	return;
	303	while (1) {
	304	spin_lock_irqsave(&card->lock, flags);
	305	if (!(card->sbuf)) {
	306	if ((card->sbuf = skb_dequeue(&card->sndq))) {
	307	card->ack_msg = card->sbuf->data;
	308	msg = (actcapi_msg *)card->sbuf->data;
	309	if ((msg->hdr.cmd.cmd == 0x86) &&
475be4d8	310	(msg->hdr.cmd.subcmd == 0)) {
1da177e4 LT	311	/* Save flags in message */
	312	card->need_b3ack = msg->msg.data_b3_req.flags;
	313	msg->msg.data_b3_req.flags = 0;
	314	}
	315	}
	316	}
	317	spin_unlock_irqrestore(&card->lock, flags);
	318	if (!(card->sbuf)) {
	319	/* No more data to send */
	320	test_and_clear_bit(ACT2000_LOCK_TX, (void *) &card->ilock);
	321	return;
	322	}
	323	skb = card->sbuf;
	324	l = 0;
	325	while (skb->len) {
	326	if (act2000_isa_writeb(card, *(skb->data))) {
	327	/* Fifo is full, but more data to send */
	328	test_and_clear_bit(ACT2000_LOCK_TX, (void *) &card->ilock);
	329	/* Schedule myself */
	330	act2000_schedule_tx(card);
	331	return;
	332	}
	333	skb_pull(skb, 1);
	334	l++;
	335	}
	336	msg = (actcapi_msg *)card->ack_msg;
	337	if ((msg->hdr.cmd.cmd == 0x86) &&
475be4d8	338	(msg->hdr.cmd.subcmd == 0)) {
1da177e4 LT	339	/*
	340	* If it's user data, reset data-ptr
	341	* and put skb into ackq.
	342	*/
	343	skb->data = card->ack_msg;
	344	/* Restore flags in message */
	345	msg->msg.data_b3_req.flags = card->need_b3ack;
	346	skb_queue_tail(&card->ackq, skb);
	347	} else
	348	dev_kfree_skb(skb);
	349	card->sbuf = NULL;
	350	}
	351	}
	352
	353	/*
	354	* Get firmware ID, check for 'ISDN' signature.
	355	*/
	356	static int
475be4d8	357	act2000_isa_getid(act2000_card *card)
1da177e4 LT	358	{
1da177e4 LT	359
475be4d8 JP	360	act2000_fwid fid;
	361	u_char p = (u_char )&fid;
	362	int count = 0;
	363
	364	while (1) {
	365	if (count > 510)
	366	return -EPROTO;
	367	if (act2000_isa_readb(card, p++))
	368	break;
	369	count++;
	370	}
	371	if (count <= 20) {
	372	printk(KERN_WARNING "act2000: No Firmware-ID!\n");
	373	return -ETIME;
	374	}
	375	*p = '\0';
	376	fid.revlen[0] = '\0';
	377	if (strcmp(fid.isdn, "ISDN")) {
	378	printk(KERN_WARNING "act2000: Wrong Firmware-ID!\n");
	379	return -EPROTO;
	380	}
1da177e4 LT	381	if ((p = strchr(fid.revision, '\n')))
1da177e4 LT	382	*p = '\0';
475be4d8	383	printk(KERN_INFO "act2000: Firmware-ID: %s\n", fid.revision);
1da177e4 LT	384	if (card->flags & ACT2000_FLAGS_IVALID) {
	385	printk(KERN_DEBUG "Enabling Interrupts ...\n");
	386	act2000_isa_enable_irq(card);
	387	}
475be4d8	388	return 0;
1da177e4 LT	389	}
	390
	391	/*
	392	* Download microcode into card, check Firmware signature.
	393	*/
	394	int
475be4d8	395	act2000_isa_download(act2000_card card, act2000_ddef __user cb)
1da177e4	396	{
475be4d8 JP	397	unsigned int length;
	398	int l;
	399	int c;
	400	long timeout;
	401	u_char *b;
	402	u_char __user *p;
	403	u_char *buf;
	404	act2000_ddef cblock;
	405
	406	if (!act2000_isa_reset(card->port))
	407	return -ENXIO;
	408	msleep_interruptible(500);
	409	if (copy_from_user(&cblock, cb, sizeof(cblock)))
	410	return -EFAULT;
	411	length = cblock.length;
	412	p = cblock.buffer;
	413	if (!access_ok(VERIFY_READ, p, length))
	414	return -EFAULT;
	415	buf = kmalloc(1024, GFP_KERNEL);
	416	if (!buf)
	417	return -ENOMEM;
	418	timeout = 0;
	419	while (length) {
	420	l = (length > 1024) ? 1024 : length;
	421	c = 0;
	422	b = buf;
	423	if (copy_from_user(buf, p, l)) {
	424	kfree(buf);
	425	return -EFAULT;
	426	}
	427	while (c < l) {
	428	if (act2000_isa_writeb(card, *b++)) {
	429	printk(KERN_WARNING
	430	"act2000: loader timed out"
	431	" len=%d c=%d\n", length, c);
	432	kfree(buf);
	433	return -ETIME;
	434	}
	435	c++;
	436	}
	437	length -= l;
	438	p += l;
	439	}
	440	kfree(buf);
	441	msleep_interruptible(500);
	442	return (act2000_isa_getid(card));
1da177e4	443	}