patch-2.3.27 linux/drivers/isdn/hisax/w6692.c

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diff -u --recursive --new-file v2.3.26/linux/drivers/isdn/hisax/w6692.c linux/drivers/isdn/hisax/w6692.c
@@ -0,0 +1,1063 @@
+/* $Id: w6692.c,v 1.1 1999/09/04 06:28:58 keil Exp $
+
+ * w6692.c   Winbond W6692 specific routines
+ *
+ * Author       Petr Novak <petr.novak@i.cz>
+ *              (based on HiSax driver by Karsten Keil)
+ *
+ *              This file is (c) under GNU PUBLIC LICENSE
+ *
+ * $Log: w6692.c,v $
+ * Revision 1.1  1999/09/04 06:28:58  keil
+ * first revision
+ *
+ *
+ *
+ */
+
+#include <linux/config.h>
+#define __NO_VERSION__
+#include "hisax.h"
+#include "w6692.h"
+#include "isdnl1.h"
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+
+#define	PCI_VEND_ASUSCOM	0x675
+#define	PCI_DEV_ASUSCOMPCI1	0x1702
+#ifndef PCI_VENDOR_ID_WINBOND2
+#define PCI_VENDOR_ID_WINBOND2	0x1050
+#endif
+#define	PCI_DEVICE_W6692	0x6692
+
+/* table entry in the PCI devices list */
+typedef struct {
+	int vendor_id;
+	int device_id;
+	char *vendor_name;
+	char *card_name;
+} PCI_ENTRY;
+
+static const PCI_ENTRY id_list[] =
+{
+	{PCI_VEND_ASUSCOM, PCI_DEV_ASUSCOMPCI1, "AsusCom", "TA XXX"},
+	{PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_W6692, "Winbond", "W6692"},
+	{0, 0, NULL, NULL}
+};
+
+extern const char *CardType[];
+
+const char *w6692_revision = "$Revision: 1.1 $";
+
+#define DBUSY_TIMER_VALUE 80
+
+static char *W6692Ver[] HISAX_INITDATA =
+{"W6692 V00", "W6692 V01", "W6692 V10",
+ "W6692 V11"};
+
+static void
+W6692Version(struct IsdnCardState *cs, char *s)
+{
+	int val;
+
+	val = cs->readW6692(cs, W_D_RBCH);
+	printk(KERN_INFO "%s Winbond W6692 version (%x): %s\n", s, val, W6692Ver[(val >> 6) & 3]);
+}
+
+static void
+ph_command(struct IsdnCardState *cs, unsigned int command)
+{
+	if (cs->debug & L1_DEB_ISAC)
+		debugl1(cs, "ph_command %x", command);
+	cs->writeisac(cs, W_CIX, command);
+}
+
+
+static void
+W6692_new_ph(struct IsdnCardState *cs)
+{
+	switch (cs->dc.w6692.ph_state) {
+		case (W_L1CMD_RST):
+			ph_command(cs, W_L1CMD_DRC);
+			l1_msg(cs, HW_RESET | INDICATION, NULL);
+			/* fallthru */
+		case (W_L1IND_CD):
+			l1_msg(cs, HW_DEACTIVATE | CONFIRM, NULL);
+			break;
+		case (W_L1IND_DRD):
+			l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
+			break;
+		case (W_L1IND_CE):
+			l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
+			break;
+		case (W_L1IND_LD):
+			l1_msg(cs, HW_RSYNC | INDICATION, NULL);
+			break;
+		case (W_L1IND_ARD):
+			l1_msg(cs, HW_INFO2 | INDICATION, NULL);
+			break;
+		case (W_L1IND_AI8):
+			l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
+			break;
+		case (W_L1IND_AI10):
+			l1_msg(cs, HW_INFO4_P10 | INDICATION, NULL);
+			break;
+		default:
+			break;
+	}
+}
+
+static void
+W6692_bh(struct IsdnCardState *cs)
+{
+	struct PStack *stptr;
+
+	if (!cs)
+		return;
+	if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
+		if (cs->debug)
+			debugl1(cs, "D-Channel Busy cleared");
+		stptr = cs->stlist;
+		while (stptr != NULL) {
+			stptr->l1.l1l2(stptr, PH_PAUSE | CONFIRM, NULL);
+			stptr = stptr->next;
+		}
+	}
+	if (test_and_clear_bit(D_L1STATECHANGE, &cs->event))
+		W6692_new_ph(cs);
+	if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
+		DChannel_proc_rcv(cs);
+	if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
+		DChannel_proc_xmt(cs);
+/*
+   if (test_and_clear_bit(D_RX_MON1, &cs->event))
+   arcofi_fsm(cs, ARCOFI_RX_END, NULL);
+   if (test_and_clear_bit(D_TX_MON1, &cs->event))
+   arcofi_fsm(cs, ARCOFI_TX_END, NULL);
+ */
+}
+
+void
+W6692_sched_event(struct IsdnCardState *cs, int event)
+{
+	test_and_set_bit(event, &cs->event);
+	queue_task(&cs->tqueue, &tq_immediate);
+	mark_bh(IMMEDIATE_BH);
+}
+
+static void
+W6692B_sched_event(struct BCState *bcs, int event)
+{
+	bcs->event |= 1 << event;
+	queue_task(&bcs->tqueue, &tq_immediate);
+	mark_bh(IMMEDIATE_BH);
+}
+
+static void
+W6692_empty_fifo(struct IsdnCardState *cs, int count)
+{
+	u_char *ptr;
+	long flags;
+
+	if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
+		debugl1(cs, "W6692_empty_fifo");
+
+	if ((cs->rcvidx + count) >= MAX_DFRAME_LEN_L1) {
+		if (cs->debug & L1_DEB_WARN)
+			debugl1(cs, "W6692_empty_fifo overrun %d",
+				cs->rcvidx + count);
+		cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK);
+		cs->rcvidx = 0;
+		return;
+	}
+	ptr = cs->rcvbuf + cs->rcvidx;
+	cs->rcvidx += count;
+	save_flags(flags);
+	cli();
+	cs->readW6692fifo(cs, ptr, count);
+	cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK);
+	restore_flags(flags);
+	if (cs->debug & L1_DEB_ISAC_FIFO) {
+		char *t = cs->dlog;
+
+		t += sprintf(t, "W6692_empty_fifo cnt %d", count);
+		QuickHex(t, ptr, count);
+		debugl1(cs, cs->dlog);
+	}
+}
+
+static void
+W6692_fill_fifo(struct IsdnCardState *cs)
+{
+	int count, more;
+	u_char *ptr;
+	long flags;
+
+	if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
+		debugl1(cs, "W6692_fill_fifo");
+
+	if (!cs->tx_skb)
+		return;
+
+	count = cs->tx_skb->len;
+	if (count <= 0)
+		return;
+
+	more = 0;
+	if (count > W_D_FIFO_THRESH) {
+		more = !0;
+		count = W_D_FIFO_THRESH;
+	}
+	save_flags(flags);
+	cli();
+	ptr = cs->tx_skb->data;
+	skb_pull(cs->tx_skb, count);
+	cs->tx_cnt += count;
+	cs->writeW6692fifo(cs, ptr, count);
+	cs->writeW6692(cs, W_D_CMDR, more ? W_D_CMDR_XMS : (W_D_CMDR_XMS | W_D_CMDR_XME));
+	restore_flags(flags);
+	if (test_and_set_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
+		debugl1(cs, "W6692_fill_fifo dbusytimer running");
+		del_timer(&cs->dbusytimer);
+	}
+	init_timer(&cs->dbusytimer);
+	cs->dbusytimer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ) / 1000);
+	add_timer(&cs->dbusytimer);
+	if (cs->debug & L1_DEB_ISAC_FIFO) {
+		char *t = cs->dlog;
+
+		t += sprintf(t, "W6692_fill_fifo cnt %d", count);
+		QuickHex(t, ptr, count);
+		debugl1(cs, cs->dlog);
+	}
+}
+
+static void
+W6692B_empty_fifo(struct BCState *bcs, int count)
+{
+	u_char *ptr;
+	struct IsdnCardState *cs = bcs->cs;
+	long flags;
+
+	if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
+		debugl1(cs, "W6692B_empty_fifo");
+
+	if (bcs->hw.w6692.rcvidx + count > HSCX_BUFMAX) {
+		if (cs->debug & L1_DEB_WARN)
+			debugl1(cs, "W6692B_empty_fifo: incoming packet too large");
+		cs->BC_Write_Reg(cs, bcs->hw.w6692.bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
+		bcs->hw.w6692.rcvidx = 0;
+		return;
+	}
+	ptr = bcs->hw.w6692.rcvbuf + bcs->hw.w6692.rcvidx;
+	bcs->hw.w6692.rcvidx += count;
+	save_flags(flags);
+	cli();
+	READW6692BFIFO(cs, bcs->hw.w6692.bchan, ptr, count);
+	cs->BC_Write_Reg(cs, bcs->hw.w6692.bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
+	restore_flags(flags);
+	if (cs->debug & L1_DEB_HSCX_FIFO) {
+		char *t = bcs->blog;
+
+		t += sprintf(t, "W6692B_empty_fifo %c cnt %d",
+			     bcs->hw.w6692.bchan ? 'B' : 'A', count);
+		QuickHex(t, ptr, count);
+		debugl1(cs, bcs->blog);
+	}
+}
+
+static void
+W6692B_fill_fifo(struct BCState *bcs)
+{
+	struct IsdnCardState *cs = bcs->cs;
+	int more, count;
+	u_char *ptr;
+	long flags;
+
+
+	if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
+		debugl1(cs, "W6692B_fill_fifo");
+
+	if (!bcs->tx_skb)
+		return;
+	if (bcs->tx_skb->len <= 0)
+		return;
+
+	more = (bcs->mode == L1_MODE_TRANS) ? 1 : 0;
+	if (bcs->tx_skb->len > W_B_FIFO_THRESH) {
+		more = !0;
+		count = W_B_FIFO_THRESH;
+	} else
+		count = bcs->tx_skb->len;
+
+	save_flags(flags);
+	cli();
+	ptr = bcs->tx_skb->data;
+	skb_pull(bcs->tx_skb, count);
+	bcs->tx_cnt -= count;
+	bcs->hw.w6692.count += count;
+	WRITEW6692BFIFO(cs, bcs->hw.w6692.bchan, ptr, count);
+	cs->BC_Write_Reg(cs, bcs->hw.w6692.bchan, W_B_CMDR, W_B_CMDR_RACT | W_B_CMDR_XMS | (more ? 0 : W_B_CMDR_XME));
+	restore_flags(flags);
+	if (cs->debug & L1_DEB_HSCX_FIFO) {
+		char *t = bcs->blog;
+
+		t += sprintf(t, "W6692B_fill_fifo %c cnt %d",
+			     bcs->hw.w6692.bchan ? 'B' : 'A', count);
+		QuickHex(t, ptr, count);
+		debugl1(cs, bcs->blog);
+	}
+}
+
+static void
+W6692B_interrupt(struct IsdnCardState *cs, u_char bchan)
+{
+	u_char val;
+	u_char r;
+	struct BCState *bcs = cs->bcs + bchan;
+	struct sk_buff *skb;
+	int count;
+
+	val = cs->BC_Read_Reg(cs, bchan, W_B_EXIR);
+	debugl1(cs, "W6692B chan %d B_EXIR 0x%02X", bchan, val);
+
+	if (!test_bit(BC_FLG_INIT, &bcs->Flag)) {
+		debugl1(cs, "W6692B not INIT yet");
+		return;
+	}
+	if (val & W_B_EXI_RME) {	/* RME */
+		r = cs->BC_Read_Reg(cs, bchan, W_B_STAR);
+		if (r & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB | W_B_STAR_XDOW)) {
+			if ((r & W_B_STAR_RDOV) && bcs->mode)
+				if (cs->debug & L1_DEB_WARN)
+					debugl1(cs, "W6692 B RDOV mode=%d",
+						bcs->mode);
+			if (r & W_B_STAR_CRCE)
+				if (cs->debug & L1_DEB_WARN)
+					debugl1(cs, "W6692 B CRC error");
+			cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RRST | W_B_CMDR_RACT);
+		} else {
+			count = cs->BC_Read_Reg(cs, bchan, W_B_RBCL) & (W_B_FIFO_THRESH - 1);
+			if (count == 0)
+				count = W_B_FIFO_THRESH;
+			W6692B_empty_fifo(bcs, count);
+			if ((count = bcs->hw.w6692.rcvidx) > 0) {
+				if (cs->debug & L1_DEB_HSCX_FIFO)
+					debugl1(cs, "W6692 Bchan Frame %d", count);
+				if (!(skb = dev_alloc_skb(count)))
+					printk(KERN_WARNING "W6692: Bchan receive out of memory\n");
+				else {
+					memcpy(skb_put(skb, count), bcs->hw.w6692.rcvbuf, count);
+					skb_queue_tail(&bcs->rqueue, skb);
+				}
+			}
+		}
+		bcs->hw.w6692.rcvidx = 0;
+		W6692B_sched_event(bcs, B_RCVBUFREADY);
+	}
+	if (val & W_B_EXI_RMR) {	/* RMR */
+		W6692B_empty_fifo(bcs, W_B_FIFO_THRESH);
+		if (bcs->mode == L1_MODE_TRANS) {
+			/* receive audio data */
+			if (!(skb = dev_alloc_skb(W_B_FIFO_THRESH)))
+				printk(KERN_WARNING "HiSax: receive out of memory\n");
+			else {
+				memcpy(skb_put(skb, W_B_FIFO_THRESH), bcs->hw.w6692.rcvbuf, W_B_FIFO_THRESH);
+				skb_queue_tail(&bcs->rqueue, skb);
+			}
+			bcs->hw.w6692.rcvidx = 0;
+			W6692B_sched_event(bcs, B_RCVBUFREADY);
+		}
+	}
+	if (val & W_B_EXI_XFR) {	/* XFR */
+		if (bcs->tx_skb) {
+			if (bcs->tx_skb->len) {
+				W6692B_fill_fifo(bcs);
+				return;
+			} else {
+				if (bcs->st->lli.l1writewakeup &&
+				 (PACKET_NOACK != bcs->tx_skb->pkt_type))
+					bcs->st->lli.l1writewakeup(bcs->st, bcs->hw.w6692.count);
+				dev_kfree_skb(bcs->tx_skb);
+				bcs->hw.w6692.count = 0;
+				bcs->tx_skb = NULL;
+			}
+		}
+		if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
+			bcs->hw.w6692.count = 0;
+			test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
+			W6692B_fill_fifo(bcs);
+		} else {
+			test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
+			W6692B_sched_event(bcs, B_XMTBUFREADY);
+		}
+	}
+	if (val & W_B_EXI_XDUN) {	/* XDUN */
+		if (bcs->mode == 1)
+			W6692B_fill_fifo(bcs);
+		else {
+			/* Here we lost an TX interrupt, so
+			   * restart transmitting the whole frame.
+			 */
+			if (bcs->tx_skb) {
+				skb_push(bcs->tx_skb, bcs->hw.w6692.count);
+				bcs->tx_cnt += bcs->hw.w6692.count;
+				bcs->hw.w6692.count = 0;
+			}
+			cs->BC_Write_Reg(cs, bcs->hw.w6692.bchan, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT);
+			if (cs->debug & L1_DEB_WARN)
+				debugl1(cs, "W6692 B EXIR %x Lost TX", val);
+		}
+	}
+}
+
+static void
+W6692_interrupt(int intno, void *dev_id, struct pt_regs *regs)
+{
+	struct IsdnCardState *cs = dev_id;
+	u_char val, exval, v1;
+	struct sk_buff *skb;
+	unsigned int count;
+	long flags;
+	int icnt = 5;
+
+	if (!cs) {
+		printk(KERN_WARNING "W6692: Spurious interrupt!\n");
+		return;
+	}
+	val = cs->readW6692(cs, W_ISTA);
+
+      StartW6692:
+	if (cs->debug & L1_DEB_ISAC)
+		debugl1(cs, "W6692 ISTA %x", val);
+
+	if (val & W_INT_D_RME) {	/* RME */
+		exval = cs->readW6692(cs, W_D_RSTA);
+		if (exval & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) {
+			if (exval & W_D_RSTA_RDOV)
+				if (cs->debug & L1_DEB_WARN)
+					debugl1(cs, "W6692 RDOV");
+			if (exval & W_D_RSTA_CRCE)
+				if (cs->debug & L1_DEB_WARN)
+					debugl1(cs, "W6692 D-channel CRC error");
+			if (exval & W_D_RSTA_RMB)
+				if (cs->debug & L1_DEB_WARN)
+					debugl1(cs, "W6692 D-channel ABORT");
+			cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST);
+		} else {
+			count = cs->readW6692(cs, W_D_RBCL) & (W_D_FIFO_THRESH - 1);
+			if (count == 0)
+				count = W_D_FIFO_THRESH;
+			W6692_empty_fifo(cs, count);
+			save_flags(flags);
+			cli();
+			if ((count = cs->rcvidx) > 0) {
+				cs->rcvidx = 0;
+				if (!(skb = alloc_skb(count, GFP_ATOMIC)))
+					printk(KERN_WARNING "HiSax: D receive out of memory\n");
+				else {
+					memcpy(skb_put(skb, count), cs->rcvbuf, count);
+					skb_queue_tail(&cs->rq, skb);
+				}
+			}
+			restore_flags(flags);
+		}
+		cs->rcvidx = 0;
+		W6692_sched_event(cs, D_RCVBUFREADY);
+	}
+	if (val & W_INT_D_RMR) {	/* RMR */
+		W6692_empty_fifo(cs, W_D_FIFO_THRESH);
+	}
+	if (val & W_INT_D_XFR) {	/* XFR */
+		if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
+			del_timer(&cs->dbusytimer);
+		if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
+			W6692_sched_event(cs, D_CLEARBUSY);
+		if (cs->tx_skb) {
+			if (cs->tx_skb->len) {
+				W6692_fill_fifo(cs);
+				goto afterXFR;
+			} else {
+				dev_kfree_skb(cs->tx_skb);
+				cs->tx_cnt = 0;
+				cs->tx_skb = NULL;
+			}
+		}
+		if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
+			cs->tx_cnt = 0;
+			W6692_fill_fifo(cs);
+		} else
+			W6692_sched_event(cs, D_XMTBUFREADY);
+	}
+      afterXFR:
+	if (val & (W_INT_XINT0 | W_INT_XINT1)) {	/* XINT0/1 - never */
+		if (cs->debug & L1_DEB_ISAC)
+			debugl1(cs, "W6692 spurious XINT!");
+	}
+	if (val & W_INT_D_EXI) {	/* EXI */
+		exval = cs->readW6692(cs, W_D_EXIR);
+		if (cs->debug & L1_DEB_WARN)
+			debugl1(cs, "W6692 D_EXIR %02x", exval);
+		if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) {	/* Transmit underrun/collision */
+			debugl1(cs, "W6692 D-chan underrun/collision");
+			printk(KERN_WARNING "HiSax: W6692 XDUN/XCOL\n");
+			if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
+				del_timer(&cs->dbusytimer);
+			if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
+				W6692_sched_event(cs, D_CLEARBUSY);
+			if (cs->tx_skb) {	/* Restart frame */
+				skb_push(cs->tx_skb, cs->tx_cnt);
+				cs->tx_cnt = 0;
+				W6692_fill_fifo(cs);
+			} else {
+				printk(KERN_WARNING "HiSax: W6692 XDUN/XCOL no skb\n");
+				debugl1(cs, "W6692 XDUN/XCOL no skb");
+				cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_XRST);
+			}
+		}
+		if (exval & W_D_EXI_RDOV) {	/* RDOV */
+			debugl1(cs, "W6692 D-channel RDOV");
+			printk(KERN_WARNING "HiSax: W6692 D-RDOV\n");
+			cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RRST);
+		}
+		if (exval & W_D_EXI_TIN2) {	/* TIN2 - never */
+			debugl1(cs, "W6692 spurious TIN2 interrupt");
+		}
+		if (exval & W_D_EXI_MOC) {	/* MOC - not supported */
+			debugl1(cs, "W6692 spurious MOC interrupt");
+			v1 = cs->readW6692(cs, W_MOSR);
+			debugl1(cs, "W6692 MOSR %02x", v1);
+		}
+		if (exval & W_D_EXI_ISC) {	/* ISC - Level1 change */
+			v1 = cs->readW6692(cs, W_CIR);
+			if (cs->debug & L1_DEB_ISAC)
+				debugl1(cs, "W6692 ISC CIR=0x%02X", v1);
+			if (v1 & W_CIR_ICC) {
+				cs->dc.w6692.ph_state = v1 & W_CIR_COD_MASK;
+				if (cs->debug & L1_DEB_ISAC)
+					debugl1(cs, "ph_state_change %x", cs->dc.w6692.ph_state);
+				W6692_sched_event(cs, D_L1STATECHANGE);
+			}
+			if (v1 & W_CIR_SCC) {
+				v1 = cs->readW6692(cs, W_SQR);
+				debugl1(cs, "W6692 SCC SQR=0x%02X", v1);
+			}
+		}
+		if (exval & W_D_EXI_WEXP) {
+			debugl1(cs, "W6692 spurious WEXP interrupt!");
+		}
+		if (exval & W_D_EXI_TEXP) {
+			debugl1(cs, "W6692 spurious TEXP interrupt!");
+		}
+	}
+	if (val & W_INT_B1_EXI) {
+		debugl1(cs, "W6692 B channel 1 interrupt");
+		W6692B_interrupt(cs, 0);
+	}
+	if (val & W_INT_B2_EXI) {
+		debugl1(cs, "W6692 B channel 2 interrupt");
+		W6692B_interrupt(cs, 1);
+	}
+	val = cs->readW6692(cs, W_ISTA);
+	if (val && icnt) {
+		icnt--;
+		goto StartW6692;
+	}
+	if (!icnt) {
+		printk(KERN_WARNING "W6692 IRQ LOOP\n");
+		cs->writeW6692(cs, W_IMASK, 0xff);
+	}
+}
+
+static void
+W6692_l1hw(struct PStack *st, int pr, void *arg)
+{
+	struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
+	struct sk_buff *skb = arg;
+	int val;
+
+	switch (pr) {
+		case (PH_DATA | REQUEST):
+			if (cs->debug & DEB_DLOG_HEX)
+				LogFrame(cs, skb->data, skb->len);
+			if (cs->debug & DEB_DLOG_VERBOSE)
+				dlogframe(cs, skb, 0);
+			if (cs->tx_skb) {
+				skb_queue_tail(&cs->sq, skb);
+#ifdef L2FRAME_DEBUG		/* psa */
+				if (cs->debug & L1_DEB_LAPD)
+					Logl2Frame(cs, skb, "PH_DATA Queued", 0);
+#endif
+			} else {
+				cs->tx_skb = skb;
+				cs->tx_cnt = 0;
+#ifdef L2FRAME_DEBUG		/* psa */
+				if (cs->debug & L1_DEB_LAPD)
+					Logl2Frame(cs, skb, "PH_DATA", 0);
+#endif
+				W6692_fill_fifo(cs);
+			}
+			break;
+		case (PH_PULL | INDICATION):
+			if (cs->tx_skb) {
+				if (cs->debug & L1_DEB_WARN)
+					debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
+				skb_queue_tail(&cs->sq, skb);
+				break;
+			}
+			if (cs->debug & DEB_DLOG_HEX)
+				LogFrame(cs, skb->data, skb->len);
+			if (cs->debug & DEB_DLOG_VERBOSE)
+				dlogframe(cs, skb, 0);
+			cs->tx_skb = skb;
+			cs->tx_cnt = 0;
+#ifdef L2FRAME_DEBUG		/* psa */
+			if (cs->debug & L1_DEB_LAPD)
+				Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
+#endif
+			W6692_fill_fifo(cs);
+			break;
+		case (PH_PULL | REQUEST):
+#ifdef L2FRAME_DEBUG		/* psa */
+			if (cs->debug & L1_DEB_LAPD)
+				debugl1(cs, "-> PH_REQUEST_PULL");
+#endif
+			if (!cs->tx_skb) {
+				test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
+				st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
+			} else
+				test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
+			break;
+		case (HW_RESET | REQUEST):
+			if ((cs->dc.w6692.ph_state == W_L1IND_DRD))
+				ph_command(cs, W_L1CMD_ECK);
+			else {
+				ph_command(cs, W_L1CMD_RST);
+				cs->dc.w6692.ph_state = W_L1CMD_RST;
+				W6692_new_ph(cs);
+			}
+			break;
+		case (HW_ENABLE | REQUEST):
+			ph_command(cs, W_L1CMD_ECK);
+			break;
+		case (HW_INFO3 | REQUEST):
+			ph_command(cs, W_L1CMD_AR8);
+			break;
+		case (HW_TESTLOOP | REQUEST):
+			val = 0;
+			if (1 & (long) arg)
+				val |= 0x0c;
+			if (2 & (long) arg)
+				val |= 0x3;
+			/* !!! not implemented yet */
+			break;
+		case (HW_DEACTIVATE | RESPONSE):
+			discard_queue(&cs->rq);
+			discard_queue(&cs->sq);
+			if (cs->tx_skb) {
+				dev_kfree_skb(cs->tx_skb);
+				cs->tx_skb = NULL;
+			}
+			if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
+				del_timer(&cs->dbusytimer);
+			if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
+				W6692_sched_event(cs, D_CLEARBUSY);
+			break;
+		default:
+			if (cs->debug & L1_DEB_WARN)
+				debugl1(cs, "W6692_l1hw unknown %04x", pr);
+			break;
+	}
+}
+
+static void
+setstack_W6692(struct PStack *st, struct IsdnCardState *cs)
+{
+	st->l1.l1hw = W6692_l1hw;
+}
+
+static void
+DC_Close_W6692(struct IsdnCardState *cs)
+{
+}
+
+static void
+dbusy_timer_handler(struct IsdnCardState *cs)
+{
+	struct PStack *stptr;
+	int rbch, star;
+
+	if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
+		rbch = cs->readW6692(cs, W_D_RBCH);
+		star = cs->readW6692(cs, W_D_STAR);
+		if (cs->debug)
+			debugl1(cs, "D-Channel Busy D_RBCH %02x D_STAR %02x",
+				rbch, star);
+		if (star & W_D_STAR_XBZ) {	/* D-Channel Busy */
+			test_and_set_bit(FLG_L1_DBUSY, &cs->HW_Flags);
+			stptr = cs->stlist;
+			while (stptr != NULL) {
+				stptr->l1.l1l2(stptr, PH_PAUSE | INDICATION, NULL);
+				stptr = stptr->next;
+			}
+		} else {
+			/* discard frame; reset transceiver */
+			test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags);
+			if (cs->tx_skb) {
+				dev_kfree_skb(cs->tx_skb);
+				cs->tx_cnt = 0;
+				cs->tx_skb = NULL;
+			} else {
+				printk(KERN_WARNING "HiSax: W6692 D-Channel Busy no skb\n");
+				debugl1(cs, "D-Channel Busy no skb");
+			}
+			cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_XRST);	/* Transmitter reset */
+			cs->irq_func(cs->irq, cs, NULL);
+		}
+	}
+}
+
+static void
+W6692Bmode(struct BCState *bcs, int mode, int bc)
+{
+	struct IsdnCardState *cs = bcs->cs;
+	int bchan = bcs->hw.w6692.bchan;
+
+	if (cs->debug & L1_DEB_HSCX)
+		debugl1(cs, "w6692 %c mode %d ichan %d",
+			'1' + bchan, mode, bc);
+	bcs->mode = mode;
+	bcs->channel = bc;
+
+	switch (mode) {
+		case (L1_MODE_NULL):
+			cs->BC_Write_Reg(cs, bchan, W_B_MODE, 0);
+			break;
+		case (L1_MODE_TRANS):
+			cs->BC_Write_Reg(cs, bchan, W_B_MODE, W_B_MODE_MMS);
+			break;
+		case (L1_MODE_HDLC):
+			cs->BC_Write_Reg(cs, bchan, W_B_MODE, W_B_MODE_ITF);
+			cs->BC_Write_Reg(cs, bchan, W_B_ADM1, 0xff);
+			cs->BC_Write_Reg(cs, bchan, W_B_ADM2, 0xff);
+			break;
+	}
+	if (mode)
+		cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RRST |
+				 W_B_CMDR_RACT | W_B_CMDR_XRST);
+	cs->BC_Write_Reg(cs, bchan, W_B_EXIM, 0x00);
+}
+
+static void
+W6692_l2l1(struct PStack *st, int pr, void *arg)
+{
+	struct sk_buff *skb = arg;
+	long flags;
+
+	switch (pr) {
+		case (PH_DATA | REQUEST):
+			save_flags(flags);
+			cli();
+			if (st->l1.bcs->tx_skb) {
+				skb_queue_tail(&st->l1.bcs->squeue, skb);
+				restore_flags(flags);
+			} else {
+				st->l1.bcs->tx_skb = skb;
+				test_and_set_bit(BC_FLG_BUSY, &st->l1.bcs->Flag);
+				st->l1.bcs->hw.w6692.count = 0;
+				restore_flags(flags);
+				st->l1.bcs->cs->BC_Send_Data(st->l1.bcs);
+			}
+			break;
+		case (PH_PULL | INDICATION):
+			if (st->l1.bcs->tx_skb) {
+				printk(KERN_WARNING "W6692_l2l1: this shouldn't happen\n");
+				break;
+			}
+			test_and_set_bit(BC_FLG_BUSY, &st->l1.bcs->Flag);
+			st->l1.bcs->tx_skb = skb;
+			st->l1.bcs->hw.w6692.count = 0;
+			st->l1.bcs->cs->BC_Send_Data(st->l1.bcs);
+			break;
+		case (PH_PULL | REQUEST):
+			if (!st->l1.bcs->tx_skb) {
+				test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
+				st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
+			} else
+				test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
+			break;
+		case (PH_ACTIVATE | REQUEST):
+			test_and_set_bit(BC_FLG_ACTIV, &st->l1.bcs->Flag);
+			W6692Bmode(st->l1.bcs, st->l1.mode, st->l1.bc);
+			l1_msg_b(st, pr, arg);
+			break;
+		case (PH_DEACTIVATE | REQUEST):
+			l1_msg_b(st, pr, arg);
+			break;
+		case (PH_DEACTIVATE | CONFIRM):
+			test_and_clear_bit(BC_FLG_ACTIV, &st->l1.bcs->Flag);
+			test_and_clear_bit(BC_FLG_BUSY, &st->l1.bcs->Flag);
+			W6692Bmode(st->l1.bcs, 0, st->l1.bc);
+			st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
+			break;
+	}
+}
+
+static void
+close_w6692state(struct BCState *bcs)
+{
+	W6692Bmode(bcs, 0, bcs->channel);
+	if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
+		if (bcs->hw.w6692.rcvbuf) {
+			kfree(bcs->hw.w6692.rcvbuf);
+			bcs->hw.w6692.rcvbuf = NULL;
+		}
+		if (bcs->blog) {
+			kfree(bcs->blog);
+			bcs->blog = NULL;
+		}
+		discard_queue(&bcs->rqueue);
+		discard_queue(&bcs->squeue);
+		if (bcs->tx_skb) {
+			dev_kfree_skb(bcs->tx_skb);
+			bcs->tx_skb = NULL;
+			test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
+		}
+	}
+}
+
+static int
+open_w6692state(struct IsdnCardState *cs, struct BCState *bcs)
+{
+	if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
+		if (!(bcs->hw.w6692.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) {
+			printk(KERN_WARNING
+			       "HiSax: No memory for w6692.rcvbuf\n");
+			test_and_clear_bit(BC_FLG_INIT, &bcs->Flag);
+			return (1);
+		}
+		if (!(bcs->blog = kmalloc(MAX_BLOG_SPACE, GFP_ATOMIC))) {
+			printk(KERN_WARNING
+			       "HiSax: No memory for bcs->blog\n");
+			test_and_clear_bit(BC_FLG_INIT, &bcs->Flag);
+			kfree(bcs->hw.w6692.rcvbuf);
+			bcs->hw.w6692.rcvbuf = NULL;
+			return (2);
+		}
+		skb_queue_head_init(&bcs->rqueue);
+		skb_queue_head_init(&bcs->squeue);
+	}
+	bcs->tx_skb = NULL;
+	test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
+	bcs->event = 0;
+	bcs->hw.w6692.rcvidx = 0;
+	bcs->tx_cnt = 0;
+	return (0);
+}
+
+static int
+setstack_w6692(struct PStack *st, struct BCState *bcs)
+{
+	bcs->channel = st->l1.bc;
+	if (open_w6692state(st->l1.hardware, bcs))
+		return (-1);
+	st->l1.bcs = bcs;
+	st->l2.l2l1 = W6692_l2l1;
+	setstack_manager(st);
+	bcs->st = st;
+	setstack_l1_B(st);
+	return (0);
+}
+
+HISAX_INITFUNC(void initW6692(struct IsdnCardState *cs, int part))
+{
+	if (part & 1) {
+		cs->tqueue.routine = (void *) (void *) W6692_bh;
+		cs->setstack_d = setstack_W6692;
+		cs->DC_Close = DC_Close_W6692;
+		cs->dbusytimer.function = (void *) dbusy_timer_handler;
+		cs->dbusytimer.data = (long) cs;
+		init_timer(&cs->dbusytimer);
+
+		cs->writeW6692(cs, W_D_CTL, W_D_CTL_SRST);
+		cs->writeW6692(cs, W_D_CTL, 0x00);
+		cs->writeW6692(cs, W_IMASK, 0xff);
+		cs->writeW6692(cs, W_D_SAM, 0xff);
+		cs->writeW6692(cs, W_D_TAM, 0xff);
+		cs->writeW6692(cs, W_D_EXIM, 0x00);
+		cs->writeW6692(cs, W_D_MODE, W_D_MODE_RACT);
+		cs->writeW6692(cs, W_IMASK, 0x18);
+		ph_command(cs, W_L1CMD_RST);
+		cs->dc.w6692.ph_state = W_L1CMD_RST;
+		W6692_new_ph(cs);
+		ph_command(cs, W_L1CMD_ECK);
+
+		cs->bcs[0].BC_SetStack = setstack_w6692;
+		cs->bcs[1].BC_SetStack = setstack_w6692;
+		cs->bcs[0].BC_Close = close_w6692state;
+		cs->bcs[1].BC_Close = close_w6692state;
+		cs->bcs[0].hw.w6692.bchan = 0;
+		cs->bcs[1].hw.w6692.bchan = 1;
+		W6692Bmode(cs->bcs, 0, 0);
+		W6692Bmode(cs->bcs + 1, 0, 0);
+	}
+	if (part & 2) {
+		/* Reenable all IRQ */
+		cs->writeW6692(cs, W_IMASK, 0x18);
+		cs->writeW6692(cs, W_D_EXIM, 0x00);
+		cs->BC_Write_Reg(cs, 0, W_B_EXIM, 0x00);
+		cs->BC_Write_Reg(cs, 1, W_B_EXIM, 0x00);
+		/* Reset D-chan receiver and transmitter */
+		cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST);
+	}
+}
+
+/* Interface functions */
+
+static u_char
+ReadW6692(struct IsdnCardState *cs, u_char offset)
+{
+	return (inb(cs->hw.w6692.iobase + offset));
+}
+
+static void
+WriteW6692(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+	outb(value, cs->hw.w6692.iobase + offset);
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
+{
+	insb(cs->hw.w6692.iobase + W_D_RFIFO, data, size);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
+{
+	outsb(cs->hw.w6692.iobase + W_D_XFIFO, data, size);
+}
+
+static u_char
+ReadW6692B(struct IsdnCardState *cs, int bchan, u_char offset)
+{
+	return (inb(cs->hw.w6692.iobase + (bchan ? 0x40 : 0) + offset));
+}
+
+static void
+WriteW6692B(struct IsdnCardState *cs, int bchan, u_char offset, u_char value)
+{
+	outb(value, cs->hw.w6692.iobase + (bchan ? 0x40 : 0) + offset);
+}
+
+static int
+w6692_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+	switch (mt) {
+		case CARD_RESET:
+			return (0);
+		case CARD_RELEASE:
+			release_region(cs->hw.w6692.iobase, 256);
+			return (0);
+		case CARD_INIT:
+			initW6692(cs, 3);
+			return (0);
+		case CARD_TEST:
+			return (0);
+	}
+	return (0);
+}
+
+static int id_idx = 0;
+
+static struct pci_dev *dev_w6692 __initdata = NULL;
+
+__initfunc(int setup_w6692(struct IsdnCard *card))
+{
+	struct IsdnCardState *cs = card->cs;
+	char tmp[64];
+	u_char found = 0;
+	u_char pci_irq = 0;
+	u_int pci_ioaddr = 0;
+
+	strcpy(tmp, w6692_revision);
+	printk(KERN_INFO "HiSax: W6692 driver Rev. %s\n", HiSax_getrev(tmp));
+	if (cs->typ != ISDN_CTYPE_W6692)
+		return (0);
+#if CONFIG_PCI
+	if (!pci_present()) {
+		printk(KERN_ERR "W6692: no PCI bus present\n");
+		return (0);
+	}
+	while (id_list[id_idx].vendor_id) {
+		dev_w6692 = pci_find_device(id_list[id_idx].vendor_id,
+					    id_list[id_idx].device_id,
+					    dev_w6692);
+		if (dev_w6692)
+			break;
+		id_idx++;
+	}
+	if (dev_w6692) {
+		found = 1;
+		pci_irq = dev_w6692->irq;
+		/* I think address 0 is allways the configuration area */
+		/* and address 1 is the real IO space KKe 03.09.99 */
+		pci_ioaddr = dev_w6692->resource[ 1].start;
+	}
+	if (!found) {
+		printk(KERN_WARNING "W6692: No PCI card found\n");
+		return (0);
+	}
+	cs->irq = pci_irq;
+	if (!cs->irq) {
+		printk(KERN_WARNING "W6692: No IRQ for PCI card found\n");
+		return (0);
+	}
+	pci_ioaddr &= PCI_BASE_ADDRESS_IO_MASK;
+	if (!pci_ioaddr) {
+		printk(KERN_WARNING "W6692: NO I/O Base Address found\n");
+		return (0);
+	}
+	cs->hw.w6692.iobase = pci_ioaddr;
+	printk(KERN_INFO "Found: %s %s, I/O base: 0x%x, irq: %d\n",
+	       id_list[id_idx].vendor_name, id_list[id_idx].card_name,
+	       pci_ioaddr, dev_w6692->irq);
+	if (check_region((cs->hw.w6692.iobase), 256)) {
+		printk(KERN_WARNING
+		       "HiSax: %s I/O ports %x-%x already in use\n",
+		       id_list[id_idx].card_name,
+		       cs->hw.w6692.iobase,
+		       cs->hw.w6692.iobase + 255);
+		return (0);
+	} else {
+		request_region(cs->hw.w6692.iobase, 256,
+			       id_list[id_idx].card_name);
+	}
+#else
+	printk(KERN_WARNING "HiSax: W6692 and NO_PCI_BIOS\n");
+	printk(KERN_WARNING "HiSax: W6692 unable to config\n");
+	return (0);
+#endif				/* CONFIG_PCI */
+
+	printk(KERN_INFO
+	       "HiSax: %s config irq:%d I/O:%x\n",
+	       id_list[id_idx].card_name, cs->irq,
+	       cs->hw.w6692.iobase);
+
+	cs->readW6692 = &ReadW6692;
+	cs->writeW6692 = &WriteW6692;
+	cs->readisacfifo = &ReadISACfifo;
+	cs->writeisacfifo = &WriteISACfifo;
+	cs->BC_Read_Reg = &ReadW6692B;
+	cs->BC_Write_Reg = &WriteW6692B;
+	cs->BC_Send_Data = &W6692B_fill_fifo;
+	cs->cardmsg = &w6692_card_msg;
+	cs->irq_func = &W6692_interrupt;
+	W6692Version(cs, "W6692:");
+	printk(KERN_INFO "W6692 ISTA=0x%X\n", ReadW6692(cs, W_ISTA));
+	printk(KERN_INFO "W6692 IMASK=0x%X\n", ReadW6692(cs, W_IMASK));
+	printk(KERN_INFO "W6692 D_EXIR=0x%X\n", ReadW6692(cs, W_D_EXIR));
+	printk(KERN_INFO "W6692 D_EXIM=0x%X\n", ReadW6692(cs, W_D_EXIM));
+	printk(KERN_INFO "W6692 D_RSTA=0x%X\n", ReadW6692(cs, W_D_RSTA));
+	return (1);
+}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)