patch-2.3.14 linux/drivers/isdn/avmb1/t1isa.c

• Lines: 545
• Date: Sun Aug 15 11:49:08 1999
• Orig file: v2.3.13/linux/drivers/isdn/avmb1/t1isa.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.13/linux/drivers/isdn/avmb1/t1isa.c linux/drivers/isdn/avmb1/t1isa.c
@@ -0,0 +1,544 @@
+/*
+ * $Id: t1isa.c,v 1.4 1999/07/09 15:05:50 keil Exp $
+ * 
+ * Module for AVM T1 HEMA-card.
+ * 
+ * (c) Copyright 1999 by Carsten Paeth (calle@calle.in-berlin.de)
+ * 
+ * $Log: t1isa.c,v $
+ * Revision 1.4  1999/07/09 15:05:50  keil
+ * compat.h is now isdn_compat.h
+ *
+ * Revision 1.3  1999/07/06 07:42:04  calle
+ * - changes in /proc interface
+ * - check and changed calls to [dev_]kfree_skb and [dev_]alloc_skb.
+ *
+ * Revision 1.2  1999/07/05 15:09:54  calle
+ * - renamed "appl_release" to "appl_released".
+ * - version und profile data now cleared on controller reset
+ * - extended /proc interface, to allow driver and controller specific
+ *   informations to include by driver hackers.
+ *
+ * Revision 1.1  1999/07/01 15:26:44  calle
+ * complete new version (I love it):
+ * + new hardware independed "capi_driver" interface that will make it easy to:
+ *   - support other controllers with CAPI-2.0 (i.e. USB Controller)
+ *   - write a CAPI-2.0 for the passive cards
+ *   - support serial link CAPI-2.0 boxes.
+ * + wrote "capi_driver" for all supported cards.
+ * + "capi_driver" (supported cards) now have to be configured with
+ *   make menuconfig, in the past all supported cards where included
+ *   at once.
+ * + new and better informations in /proc/capi/
+ * + new ioctl to switch trace of capi messages per controller
+ *   using "avmcapictrl trace [contr] on|off|...."
+ * + complete testcircle with all supported cards and also the
+ *   PCMCIA cards (now patch for pcmcia-cs-3.0.13 needed) done.
+ *
+ *
+ */
+
+#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 <linux/isdn_compat.h>
+#include "capicmd.h"
+#include "capiutil.h"
+#include "capilli.h"
+#include "avmcard.h"
+
+static char *revision = "$Revision: 1.4 $";
+
+/* ------------------------------------------------------------- */
+
+MODULE_AUTHOR("Carsten Paeth <calle@calle.in-berlin.de>");
+
+/* ------------------------------------------------------------- */
+
+static struct capi_driver_interface *di;
+
+/* ------------------------------------------------------------- */
+
+static int hema_irq_table[16] =
+{0,
+ 0,
+ 0,
+ 0x80,				/* irq 3 */
+ 0,
+ 0x90,				/* irq 5 */
+ 0,
+ 0xA0,				/* irq 7 */
+ 0,
+ 0xB0,				/* irq 9 */
+ 0xC0,				/* irq 10 */
+ 0xD0,				/* irq 11 */
+ 0xE0,				/* irq 12 */
+ 0,
+ 0,
+ 0xF0,				/* irq 15 */
+};
+
+static int t1_detectandinit(unsigned int base, unsigned irq, int cardnr)
+{
+	unsigned char cregs[8];
+	unsigned char reverse_cardnr;
+	unsigned long flags;
+	unsigned char dummy;
+	int i;
+
+	reverse_cardnr =   ((cardnr & 0x01) << 3) | ((cardnr & 0x02) << 1)
+		         | ((cardnr & 0x04) >> 1) | ((cardnr & 0x08) >> 3);
+	cregs[0] = (HEMA_VERSION_ID << 4) | (reverse_cardnr & 0xf);
+	cregs[1] = 0x00; /* fast & slow link connected to CON1 */
+	cregs[2] = 0x05; /* fast link 20MBit, slow link 20 MBit */
+	cregs[3] = 0;
+	cregs[4] = 0x11; /* zero wait state */
+	cregs[5] = hema_irq_table[irq & 0xf];
+	cregs[6] = 0;
+	cregs[7] = 0;
+
+	save_flags(flags);
+	cli();
+	/* board reset */
+	t1outp(base, T1_RESETBOARD, 0xf);
+	udelay(100 * 1000);
+	dummy = t1inp(base, T1_FASTLINK+T1_OUTSTAT); /* first read */
+
+	/* write config */
+	dummy = (base >> 4) & 0xff;
+	for (i=1;i<=0xf;i++) t1outp(base, i, dummy);
+	t1outp(base, HEMA_PAL_ID & 0xf, dummy);
+	t1outp(base, HEMA_PAL_ID >> 4, cregs[0]);
+	for(i=1;i<7;i++) t1outp(base, 0, cregs[i]);
+	t1outp(base, ((base >> 4)) & 0x3, cregs[7]);
+	restore_flags(flags);
+
+	udelay(100 * 1000);
+	t1outp(base, T1_FASTLINK+T1_RESETLINK, 0);
+	t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0);
+	udelay(10 * 1000);
+	t1outp(base, T1_FASTLINK+T1_RESETLINK, 1);
+	t1outp(base, T1_SLOWLINK+T1_RESETLINK, 1);
+	udelay(100 * 1000);
+	t1outp(base, T1_FASTLINK+T1_RESETLINK, 0);
+	t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0);
+	udelay(10 * 1000);
+	t1outp(base, T1_FASTLINK+T1_ANALYSE, 0);
+	udelay(5 * 1000);
+	t1outp(base, T1_SLOWLINK+T1_ANALYSE, 0);
+
+	if (t1inp(base, T1_FASTLINK+T1_OUTSTAT) != 0x1) /* tx empty */
+		return 1;
+	if (t1inp(base, T1_FASTLINK+T1_INSTAT) != 0x0) /* rx empty */
+		return 2;
+	if (t1inp(base, T1_FASTLINK+T1_IRQENABLE) != 0x0)
+		return 3;
+	if ((t1inp(base, T1_FASTLINK+T1_FIFOSTAT) & 0xf0) != 0x70)
+		return 4;
+	if ((t1inp(base, T1_FASTLINK+T1_IRQMASTER) & 0x0e) != 0)
+		return 5;
+	if ((t1inp(base, T1_FASTLINK+T1_IDENT) & 0x7d) != 1)
+		return 6;
+	if (t1inp(base, T1_SLOWLINK+T1_OUTSTAT) != 0x1) /* tx empty */
+		return 7;
+	if ((t1inp(base, T1_SLOWLINK+T1_IRQMASTER) & 0x0e) != 0)
+		return 8;
+	if ((t1inp(base, T1_SLOWLINK+T1_IDENT) & 0x7d) != 0)
+		return 9;
+        return 0;
+}
+
+static void t1_handle_interrupt(avmcard * card)
+{
+	struct capi_ctr *ctrl = card->ctrl;
+	unsigned char b1cmd;
+	struct sk_buff *skb;
+
+	unsigned ApplId;
+	unsigned MsgLen;
+	unsigned DataB3Len;
+	unsigned NCCI;
+	unsigned WindowSize;
+
+	while (b1_rx_full(card->port)) {
+
+		b1cmd = b1_get_byte(card->port);
+
+		switch (b1cmd) {
+
+		case RECEIVE_DATA_B3_IND:
+
+			ApplId = (unsigned) b1_get_word(card->port);
+			MsgLen = t1_get_slice(card->port, card->msgbuf);
+			DataB3Len = t1_get_slice(card->port, card->databuf);
+
+			if (!(skb = alloc_skb(DataB3Len+MsgLen, GFP_ATOMIC))) {
+				printk(KERN_ERR "t1isa: incoming packet dropped\n");
+			} else {
+				memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
+				memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len);
+				CAPIMSG_SETDATA(skb->data, skb->data + MsgLen);
+				ctrl->handle_capimsg(ctrl, ApplId, skb);
+			}
+			break;
+
+		case RECEIVE_MESSAGE:
+
+			ApplId = (unsigned) b1_get_word(card->port);
+			MsgLen = t1_get_slice(card->port, card->msgbuf);
+			if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
+				printk(KERN_ERR "t1isa: incoming packet dropped\n");
+			} else {
+				memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
+				ctrl->handle_capimsg(ctrl, ApplId, skb);
+			}
+			break;
+
+		case RECEIVE_NEW_NCCI:
+
+			ApplId = b1_get_word(card->port);
+			NCCI = b1_get_word(card->port);
+			WindowSize = b1_get_word(card->port);
+
+			ctrl->new_ncci(ctrl, ApplId, NCCI, WindowSize);
+
+			break;
+
+		case RECEIVE_FREE_NCCI:
+
+			ApplId = b1_get_word(card->port);
+			NCCI = b1_get_word(card->port);
+
+			if (NCCI != 0xffffffff)
+				ctrl->free_ncci(ctrl, ApplId, NCCI);
+			else ctrl->appl_released(ctrl, ApplId);
+			break;
+
+		case RECEIVE_START:
+			b1_put_byte(card->port, SEND_POLLACK);
+			ctrl->resume_output(ctrl);
+			break;
+
+		case RECEIVE_STOP:
+			ctrl->suspend_output(ctrl);
+			break;
+
+		case RECEIVE_INIT:
+
+			card->versionlen = t1_get_slice(card->port, card->versionbuf);
+			b1_parse_version(card);
+			printk(KERN_INFO "%s: %s-card (%s) now active\n",
+			       card->name,
+			       card->version[VER_CARDTYPE],
+			       card->version[VER_DRIVER]);
+			ctrl->ready(ctrl);
+			break;
+
+		case RECEIVE_TASK_READY:
+			ApplId = (unsigned) b1_get_word(card->port);
+			MsgLen = t1_get_slice(card->port, 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 = t1_get_slice(card->port, 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;
+
+		case 0xff:
+			printk(KERN_ERR "%s: card reseted ?\n", card->name);
+			return;
+		default:
+			printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n",
+					card->name, b1cmd);
+			return;
+		}
+	}
+}
+
+/* ------------------------------------------------------------- */
+
+static void t1isa_interrupt(int interrupt, void *devptr, struct pt_regs *regs)
+{
+	avmcard *card;
+
+	card = (avmcard *) devptr;
+
+	if (!card) {
+		printk(KERN_WARNING "t1_interrupt: wrong device\n");
+		return;
+	}
+	if (card->interrupt) {
+		printk(KERN_ERR "t1_interrupt: reentering interrupt hander (%s)\n", card->name);
+		return;
+	}
+
+	card->interrupt = 1;
+
+	t1_handle_interrupt(card);
+
+	card->interrupt = 0;
+}
+/* ------------------------------------------------------------- */
+
+static int t1isa_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	unsigned int port = card->port;
+	unsigned long flags;
+	int retval;
+
+	t1_disable_irq(port);
+	b1_reset(port);
+
+	if ((retval = b1_load_t4file(port, &data->firmware))) {
+		b1_reset(port);
+		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(port, &data->configuration))) {
+			b1_reset(port);
+			printk(KERN_ERR "%s: failed to load config!!\n",
+					card->name);
+			return retval;
+		}
+	}
+
+	if (!b1_loaded(port)) {
+		printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
+		return -EIO;
+	}
+
+	save_flags(flags);
+	cli();
+	b1_setinterrupt(port, card->irq, card->cardtype);
+	b1_put_byte(port, SEND_INIT);
+	b1_put_word(port, AVM_NAPPS);
+	b1_put_word(port, AVM_NCCI_PER_CHANNEL*30);
+	b1_put_word(port, ctrl->cnr - 1);
+	restore_flags(flags);
+
+	return 0;
+}
+
+void t1isa_reset_ctr(struct capi_ctr *ctrl)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	unsigned int port = card->port;
+
+	t1_disable_irq(port);
+	b1_reset(port);
+	b1_reset(port);
+
+	memset(card->version, 0, sizeof(card->version));
+	ctrl->reseted(ctrl);
+}
+
+static void t1isa_remove_ctr(struct capi_ctr *ctrl)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	unsigned int port = card->port;
+
+	t1_disable_irq(port);
+	b1_reset(port);
+	b1_reset(port);
+	t1_reset(port);
+
+	di->detach_ctr(ctrl);
+	free_irq(card->irq, card);
+	release_region(card->port, AVMB1_PORTLEN);
+	kfree(card);
+
+	MOD_DEC_USE_COUNT;
+}
+
+/* ------------------------------------------------------------- */
+
+static int t1isa_add_card(struct capi_driver *driver, struct capicardparams *p)
+{
+	struct capi_ctr *ctrl;
+	avmcard *card;
+	int retval;
+
+	card = (avmcard *) kmalloc(sizeof(avmcard), GFP_ATOMIC);
+
+	if (!card) {
+		printk(KERN_WARNING "t1isa: no memory.\n");
+		return -ENOMEM;
+	}
+	memset(card, 0, sizeof(avmcard));
+	sprintf(card->name, "t1isa-%x", p->port);
+	card->port = p->port;
+	card->irq = p->irq;
+	card->cardtype = avm_t1isa;
+	card->cardnr = p->cardnr;
+
+	if (!(((card->port & 0x7) == 0) && ((card->port & 0x30) != 0x30))) {
+		printk(KERN_WARNING "t1isa: illegal port 0x%x.\n", card->port);
+		kfree(card);
+		return -EINVAL;
+        }
+
+	if (check_region(card->port, AVMB1_PORTLEN)) {
+		printk(KERN_WARNING
+		       "t1isa: ports 0x%03x-0x%03x in use.\n",
+		       card->port, card->port + AVMB1_PORTLEN);
+		kfree(card);
+		return -EBUSY;
+	}
+	if (hema_irq_table[card->irq & 0xf] == 0) {
+		printk(KERN_WARNING "t1isa: irq %d not valid.\n", card->irq);
+		kfree(card);
+		return -EINVAL;
+	}
+	for (ctrl = driver->controller; ctrl; ctrl = ctrl->next) {
+		if (((avmcard *)(ctrl->driverdata))->cardnr == card->cardnr) {
+			printk(KERN_WARNING "t1isa: card with number %d already installed.\n", card->cardnr);
+			kfree(card);
+			return -EBUSY;
+		}
+	}
+        if ((retval = t1_detectandinit(card->port, card->irq, card->cardnr)) != 0) {
+		printk(KERN_NOTICE "t1isa: NO card at 0x%x (%d)\n",
+					card->port, retval);
+		kfree(card);
+		return -EIO;
+	}
+	t1_disable_irq(card->port);
+	b1_reset(card->port);
+
+	request_region(p->port, AVMB1_PORTLEN, card->name);
+
+	retval = request_irq(card->irq, t1isa_interrupt, 0, card->name, card);
+	if (retval) {
+		printk(KERN_ERR "t1isa: unable to get IRQ %d.\n", card->irq);
+		release_region(card->port, AVMB1_PORTLEN);
+		kfree(card);
+		return -EBUSY;
+	}
+
+	card->ctrl = di->attach_ctr(driver, card->name, card);
+	if (!card->ctrl) {
+		printk(KERN_ERR "t1isa: attach controller failed.\n");
+		free_irq(card->irq, card);
+		release_region(card->port, AVMB1_PORTLEN);
+		kfree(card);
+		return -EBUSY;
+	}
+
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static void t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	unsigned int port = card->port;
+	unsigned long flags;
+	__u16 len = CAPIMSG_LEN(skb->data);
+	__u8 cmd = CAPIMSG_COMMAND(skb->data);
+	__u8 subcmd = CAPIMSG_SUBCOMMAND(skb->data);
+
+	save_flags(flags);
+	cli();
+	if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
+		__u16 dlen = CAPIMSG_DATALEN(skb->data);
+		b1_put_byte(port, SEND_DATA_B3_REQ);
+		t1_put_slice(port, skb->data, len);
+		t1_put_slice(port, skb->data + len, dlen);
+	} else {
+		b1_put_byte(port, SEND_MESSAGE);
+		t1_put_slice(port, skb->data, len);
+	}
+	restore_flags(flags);
+	dev_kfree_skb(skb);
+}
+/* ------------------------------------------------------------- */
+
+static char *t1isa_procinfo(struct capi_ctr *ctrl)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	if (!card)
+		return "";
+	sprintf(card->infobuf, "%s %s 0x%x %d %d",
+		card->cardname[0] ? card->cardname : "-",
+		card->version[VER_DRIVER] ? card->version[VER_DRIVER] : "-",
+		card->port, card->irq, card->cardnr
+		);
+	return card->infobuf;
+}
+
+
+/* ------------------------------------------------------------- */
+
+static struct capi_driver t1isa_driver = {
+    "t1isa",
+    "0.0",
+    t1isa_load_firmware,
+    t1isa_reset_ctr,
+    t1isa_remove_ctr,
+    b1_register_appl,
+    b1_release_appl,
+    t1isa_send_message,
+
+    t1isa_procinfo,
+    b1ctl_read_proc,
+    0,	/* use standard driver_read_proc */
+
+    t1isa_add_card,
+};
+
+#ifdef MODULE
+#define t1isa_init init_module
+void cleanup_module(void);
+#endif
+
+int t1isa_init(void)
+{
+	struct capi_driver *driver = &t1isa_driver;
+	char *p;
+
+	if ((p = strchr(revision, ':'))) {
+		strncpy(driver->revision, p + 1, sizeof(driver->revision));
+		p = strchr(driver->revision, '$');
+		*p = 0;
+	}
+
+	printk(KERN_INFO "%s: revision %s\n", driver->name, driver->revision);
+
+        di = attach_capi_driver(driver);
+
+	if (!di) {
+		printk(KERN_ERR "%s: failed to attach capi_driver\n",
+				driver->name);
+		return -EIO;
+	}
+	return 0;
+}
+
+#ifdef MODULE
+void cleanup_module(void)
+{
+    detach_capi_driver(&t1isa_driver);
+}
+#endif