patch-2.3.14 linux/drivers/isdn/hisax/jade.c

• Lines: 327
• Date: Thu Aug 12 09:42:33 1999
• Orig file: v2.3.13/linux/drivers/isdn/hisax/jade.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.13/linux/drivers/isdn/hisax/jade.c linux/drivers/isdn/hisax/jade.c
@@ -0,0 +1,326 @@
+/* $Id: jade.c,v 1.2 1999/07/01 08:07:57 keil Exp $
+ *
+ * jade.c   JADE stuff (derived from original hscx.c)
+ *
+ * Author   Roland Klabunde (R.Klabunde@Berkom.de)
+ *
+ * $Log: jade.c,v $
+ * Revision 1.2  1999/07/01 08:07:57  keil
+ * Initial version
+ *
+ *
+ */
+
+
+#define __NO_VERSION__
+#include "hisax.h"
+#include "hscx.h"
+#include "jade.h"
+#include "isdnl1.h"
+#include <linux/interrupt.h>
+
+
+HISAX_INITFUNC(int
+JadeVersion(struct IsdnCardState *cs, char *s))
+{
+    int ver,i;
+    int to = 50;
+    cs->BC_Write_Reg(cs, -1, 0x50, 0x19);
+    i=0;
+    while (to) {
+    	udelay(1);
+	ver = cs->BC_Read_Reg(cs, -1, 0x60);
+	to--;
+	if (ver)
+    	    break;
+	if (!to) {
+	    printk(KERN_INFO "%s JADE version not obtainable\n", s);
+    	    return (0);
+        }
+    }
+    /* Wait for the JADE */
+    udelay(10);
+    /* Read version */
+    ver = cs->BC_Read_Reg(cs, -1, 0x60);
+    printk(KERN_INFO "%s JADE version: %d\n", s, ver);
+    return (1);
+}
+
+/* Write to indirect accessible jade register set */
+static void
+jade_write_indirect(struct IsdnCardState *cs, u_char reg, u_char value)
+{
+    int to = 50;
+    long flags;
+    u_char ret;
+    save_flags(flags);
+    cli();
+    /* Write the data */
+    cs->BC_Write_Reg(cs, -1, COMM_JADE+1, value);
+    /* Say JADE we wanna write indirect reg 'reg' */
+    cs->BC_Write_Reg(cs, -1, COMM_JADE, reg);
+    to = 50;
+    /* Wait for RDY goes high */
+    while (to) {
+    	udelay(1);
+	ret = cs->BC_Read_Reg(cs, -1, COMM_JADE);
+	to--;
+	if (ret & 1)
+	    /* Got acknowledge */
+	    break;
+	if (!to) {
+	    restore_flags(flags);
+    	    printk(KERN_INFO "Can not see ready bit from JADE DSP (reg=0x%X, value=0x%X)\n", reg, value);
+	    return;
+	}
+    }
+    restore_flags(flags);
+}
+
+
+
+void
+modejade(struct BCState *bcs, int mode, int bc)
+{
+    struct IsdnCardState *cs = bcs->cs;
+    int jade = bcs->hw.hscx.hscx;
+
+    if (cs->debug & L1_DEB_HSCX) {
+	char tmp[40];
+	sprintf(tmp, "jade %c mode %d ichan %d",
+		'A' + jade, mode, bc);
+	debugl1(cs, tmp);
+    }
+    bcs->mode = mode;
+    bcs->channel = bc;
+	
+    cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, (mode == L1_MODE_TRANS ? jadeMODE_TMO:0x00));
+    cs->BC_Write_Reg(cs, jade, jade_HDLC_CCR0, (jadeCCR0_PU|jadeCCR0_ITF));
+    cs->BC_Write_Reg(cs, jade, jade_HDLC_CCR1, 0x00);
+
+    jade_write_indirect(cs, jade_HDLC1SERRXPATH, 0x08);
+    jade_write_indirect(cs, jade_HDLC2SERRXPATH, 0x08);
+    jade_write_indirect(cs, jade_HDLC1SERTXPATH, 0x00);
+    jade_write_indirect(cs, jade_HDLC2SERTXPATH, 0x00);
+
+    cs->BC_Write_Reg(cs, jade, jade_HDLC_XCCR, 0x07);
+    cs->BC_Write_Reg(cs, jade, jade_HDLC_RCCR, 0x07);
+
+    if (bc == 0) {
+	cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAX, 0x00);
+	cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAR, 0x00);
+    } else {
+	cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAX, 0x04);
+	cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAR, 0x04);
+    }
+    switch (mode) {
+	case (L1_MODE_NULL):
+		cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, jadeMODE_TMO);
+		break;
+	case (L1_MODE_TRANS):
+		cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, (jadeMODE_TMO|jadeMODE_RAC|jadeMODE_XAC));
+		break;
+	case (L1_MODE_HDLC):
+		cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, (jadeMODE_RAC|jadeMODE_XAC));
+		break;
+    }
+    if (mode) {
+	cs->BC_Write_Reg(cs, jade, jade_HDLC_RCMD, (jadeRCMD_RRES|jadeRCMD_RMC));
+	cs->BC_Write_Reg(cs, jade, jade_HDLC_XCMD, jadeXCMD_XRES);
+	/* Unmask ints */
+	cs->BC_Write_Reg(cs, jade, jade_HDLC_IMR, 0xF8);
+    }
+    else
+	/* Mask ints */
+	cs->BC_Write_Reg(cs, jade, jade_HDLC_IMR, 0x00);
+}
+
+void
+jade_sched_event(struct BCState *bcs, int event)
+{
+    bcs->event |= 1 << event;
+    queue_task(&bcs->tqueue, &tq_immediate);
+    mark_bh(IMMEDIATE_BH);
+}
+
+static void
+jade_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.hscx.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 "jade_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.hscx.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);
+		modejade(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);
+		modejade(st->l1.bcs, 0, st->l1.bc);
+		st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
+		break;
+    }
+}
+
+void
+close_jadestate(struct BCState *bcs)
+{
+    modejade(bcs, 0, bcs->channel);
+    if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
+	if (bcs->hw.hscx.rcvbuf) {
+		kfree(bcs->hw.hscx.rcvbuf);
+		bcs->hw.hscx.rcvbuf = NULL;
+	}
+	if (bcs->blog) {
+		kfree(bcs->blog);
+		bcs->blog = NULL;
+	}
+	discard_queue(&bcs->rqueue);
+	discard_queue(&bcs->squeue);
+	if (bcs->tx_skb) {
+		idev_kfree_skb(bcs->tx_skb, FREE_WRITE);
+		bcs->tx_skb = NULL;
+		test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
+	}
+    }
+}
+
+static int
+open_jadestate(struct IsdnCardState *cs, struct BCState *bcs)
+{
+	if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
+		if (!(bcs->hw.hscx.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) {
+			printk(KERN_WARNING
+			       "HiSax: No memory for hscx.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.hscx.rcvbuf);
+			bcs->hw.hscx.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.hscx.rcvidx = 0;
+	bcs->tx_cnt = 0;
+	return (0);
+}
+
+
+int
+setstack_jade(struct PStack *st, struct BCState *bcs)
+{
+	bcs->channel = st->l1.bc;
+	if (open_jadestate(st->l1.hardware, bcs))
+		return (-1);
+	st->l1.bcs = bcs;
+	st->l2.l2l1 = jade_l2l1;
+	setstack_manager(st);
+	bcs->st = st;
+	setstack_l1_B(st);
+	return (0);
+}
+
+HISAX_INITFUNC(void
+clear_pending_jade_ints(struct IsdnCardState *cs))
+{
+	int val;
+	char tmp[64];
+
+	cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0x00);
+	cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0x00);
+
+	val = cs->BC_Read_Reg(cs, 1, jade_HDLC_ISR);
+	sprintf(tmp, "jade B ISTA %x", val);
+	debugl1(cs, tmp);
+	val = cs->BC_Read_Reg(cs, 0, jade_HDLC_ISR);
+	sprintf(tmp, "jade A ISTA %x", val);
+	debugl1(cs, tmp);
+	val = cs->BC_Read_Reg(cs, 1, jade_HDLC_STAR);
+	sprintf(tmp, "jade B STAR %x", val);
+	debugl1(cs, tmp);
+	val = cs->BC_Read_Reg(cs, 0, jade_HDLC_STAR);
+	sprintf(tmp, "jade A STAR %x", val);
+	debugl1(cs, tmp);
+	/* Unmask ints */
+	cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0xF8);
+	cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0xF8);
+}
+
+HISAX_INITFUNC(void
+initjade(struct IsdnCardState *cs))
+{
+	cs->bcs[0].BC_SetStack = setstack_jade;
+	cs->bcs[1].BC_SetStack = setstack_jade;
+	cs->bcs[0].BC_Close = close_jadestate;
+	cs->bcs[1].BC_Close = close_jadestate;
+	cs->bcs[0].hw.hscx.hscx = 0;
+	cs->bcs[1].hw.hscx.hscx = 1;
+
+	/* Stop DSP audio tx/rx */
+	jade_write_indirect(cs, 0x11, 0x0f);
+	jade_write_indirect(cs, 0x17, 0x2f);
+
+	/* Transparent Mode, RxTx inactive, No Test, No RFS/TFS */
+	cs->BC_Write_Reg(cs, 0, jade_HDLC_MODE, jadeMODE_TMO);
+	cs->BC_Write_Reg(cs, 1, jade_HDLC_MODE, jadeMODE_TMO);
+	/* Power down, 1-Idle, RxTx least significant bit first */
+	cs->BC_Write_Reg(cs, 0, jade_HDLC_CCR0, 0x00);
+	cs->BC_Write_Reg(cs, 1, jade_HDLC_CCR0, 0x00);
+	/* Mask all interrupts */
+	cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR,  0x00);
+	cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR,  0x00);
+	/* Setup host access to hdlc controller */
+	jade_write_indirect(cs, jade_HDLCCNTRACCESS, (jadeINDIRECT_HAH1|jadeINDIRECT_HAH2));
+	/* Unmask HDLC int (donīt forget DSP int later on)*/
+	cs->BC_Write_Reg(cs, -1,jade_INT, (jadeINT_HDLC1|jadeINT_HDLC2));
+
+	/* once again TRANSPARENT */	
+	modejade(cs->bcs, 0, 0);
+	modejade(cs->bcs + 1, 0, 0);
+}
+