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path: root/drivers/isdn/hisax/hscx.c
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Diffstat (limited to 'drivers/isdn/hisax/hscx.c')
-rw-r--r--drivers/isdn/hisax/hscx.c277
1 files changed, 277 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/hscx.c b/drivers/isdn/hisax/hscx.c
new file mode 100644
index 000000000..3e305fec0
--- /dev/null
+++ b/drivers/isdn/hisax/hscx.c
@@ -0,0 +1,277 @@
+/* $Id: hscx.c,v 1.24.2.4 2004/01/24 20:47:23 keil Exp $
+ *
+ * HSCX specific routines
+ *
+ * Author Karsten Keil
+ * Copyright by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/init.h>
+#include "hisax.h"
+#include "hscx.h"
+#include "isac.h"
+#include "isdnl1.h"
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+
+static char *HSCXVer[] =
+{"A1", "?1", "A2", "?3", "A3", "V2.1", "?6", "?7",
+ "?8", "?9", "?10", "?11", "?12", "?13", "?14", "???"};
+
+int
+HscxVersion(struct IsdnCardState *cs, char *s)
+{
+ int verA, verB;
+
+ verA = cs->BC_Read_Reg(cs, 0, HSCX_VSTR) & 0xf;
+ verB = cs->BC_Read_Reg(cs, 1, HSCX_VSTR) & 0xf;
+ printk(KERN_INFO "%s HSCX version A: %s B: %s\n", s,
+ HSCXVer[verA], HSCXVer[verB]);
+ if ((verA == 0) | (verA == 0xf) | (verB == 0) | (verB == 0xf))
+ return (1);
+ else
+ return (0);
+}
+
+void
+modehscx(struct BCState *bcs, int mode, int bc)
+{
+ struct IsdnCardState *cs = bcs->cs;
+ int hscx = bcs->hw.hscx.hscx;
+
+ if (cs->debug & L1_DEB_HSCX)
+ debugl1(cs, "hscx %c mode %d ichan %d",
+ 'A' + hscx, mode, bc);
+ bcs->mode = mode;
+ bcs->channel = bc;
+ cs->BC_Write_Reg(cs, hscx, HSCX_XAD1, 0xFF);
+ cs->BC_Write_Reg(cs, hscx, HSCX_XAD2, 0xFF);
+ cs->BC_Write_Reg(cs, hscx, HSCX_RAH2, 0xFF);
+ cs->BC_Write_Reg(cs, hscx, HSCX_XBCH, 0x0);
+ cs->BC_Write_Reg(cs, hscx, HSCX_RLCR, 0x0);
+ cs->BC_Write_Reg(cs, hscx, HSCX_CCR1,
+ test_bit(HW_IPAC, &cs->HW_Flags) ? 0x82 : 0x85);
+ cs->BC_Write_Reg(cs, hscx, HSCX_CCR2, 0x30);
+ cs->BC_Write_Reg(cs, hscx, HSCX_XCCR, 7);
+ cs->BC_Write_Reg(cs, hscx, HSCX_RCCR, 7);
+
+ /* Switch IOM 1 SSI */
+ if (test_bit(HW_IOM1, &cs->HW_Flags) && (hscx == 0))
+ bc = 1 - bc;
+
+ if (bc == 0) {
+ cs->BC_Write_Reg(cs, hscx, HSCX_TSAX,
+ test_bit(HW_IOM1, &cs->HW_Flags) ? 0x7 : bcs->hw.hscx.tsaxr0);
+ cs->BC_Write_Reg(cs, hscx, HSCX_TSAR,
+ test_bit(HW_IOM1, &cs->HW_Flags) ? 0x7 : bcs->hw.hscx.tsaxr0);
+ } else {
+ cs->BC_Write_Reg(cs, hscx, HSCX_TSAX, bcs->hw.hscx.tsaxr1);
+ cs->BC_Write_Reg(cs, hscx, HSCX_TSAR, bcs->hw.hscx.tsaxr1);
+ }
+ switch (mode) {
+ case (L1_MODE_NULL):
+ cs->BC_Write_Reg(cs, hscx, HSCX_TSAX, 0x1f);
+ cs->BC_Write_Reg(cs, hscx, HSCX_TSAR, 0x1f);
+ cs->BC_Write_Reg(cs, hscx, HSCX_MODE, 0x84);
+ break;
+ case (L1_MODE_TRANS):
+ cs->BC_Write_Reg(cs, hscx, HSCX_MODE, 0xe4);
+ break;
+ case (L1_MODE_HDLC):
+ cs->BC_Write_Reg(cs, hscx, HSCX_CCR1,
+ test_bit(HW_IPAC, &cs->HW_Flags) ? 0x8a : 0x8d);
+ cs->BC_Write_Reg(cs, hscx, HSCX_MODE, 0x8c);
+ break;
+ }
+ if (mode)
+ cs->BC_Write_Reg(cs, hscx, HSCX_CMDR, 0x41);
+ cs->BC_Write_Reg(cs, hscx, HSCX_ISTA, 0x00);
+}
+
+void
+hscx_l2l1(struct PStack *st, int pr, void *arg)
+{
+ struct BCState *bcs = st->l1.bcs;
+ u_long flags;
+ struct sk_buff *skb = arg;
+
+ switch (pr) {
+ case (PH_DATA | REQUEST):
+ spin_lock_irqsave(&bcs->cs->lock, flags);
+ if (bcs->tx_skb) {
+ skb_queue_tail(&bcs->squeue, skb);
+ } else {
+ bcs->tx_skb = skb;
+ test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
+ bcs->hw.hscx.count = 0;
+ bcs->cs->BC_Send_Data(bcs);
+ }
+ spin_unlock_irqrestore(&bcs->cs->lock, flags);
+ break;
+ case (PH_PULL | INDICATION):
+ spin_lock_irqsave(&bcs->cs->lock, flags);
+ if (bcs->tx_skb) {
+ printk(KERN_WARNING "hscx_l2l1: this shouldn't happen\n");
+ } else {
+ test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
+ bcs->tx_skb = skb;
+ bcs->hw.hscx.count = 0;
+ bcs->cs->BC_Send_Data(bcs);
+ }
+ spin_unlock_irqrestore(&bcs->cs->lock, flags);
+ break;
+ case (PH_PULL | REQUEST):
+ if (!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):
+ spin_lock_irqsave(&bcs->cs->lock, flags);
+ test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
+ modehscx(bcs, st->l1.mode, st->l1.bc);
+ spin_unlock_irqrestore(&bcs->cs->lock, flags);
+ l1_msg_b(st, pr, arg);
+ break;
+ case (PH_DEACTIVATE | REQUEST):
+ l1_msg_b(st, pr, arg);
+ break;
+ case (PH_DEACTIVATE | CONFIRM):
+ spin_lock_irqsave(&bcs->cs->lock, flags);
+ test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
+ test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
+ modehscx(bcs, 0, st->l1.bc);
+ spin_unlock_irqrestore(&bcs->cs->lock, flags);
+ st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
+ break;
+ }
+}
+
+static void
+close_hscxstate(struct BCState *bcs)
+{
+ modehscx(bcs, 0, bcs->channel);
+ if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
+ kfree(bcs->hw.hscx.rcvbuf);
+ bcs->hw.hscx.rcvbuf = NULL;
+ kfree(bcs->blog);
+ bcs->blog = NULL;
+ skb_queue_purge(&bcs->rqueue);
+ skb_queue_purge(&bcs->squeue);
+ if (bcs->tx_skb) {
+ dev_kfree_skb_any(bcs->tx_skb);
+ bcs->tx_skb = NULL;
+ test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
+ }
+ }
+}
+
+int
+open_hscxstate(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);
+}
+
+static int
+setstack_hscx(struct PStack *st, struct BCState *bcs)
+{
+ bcs->channel = st->l1.bc;
+ if (open_hscxstate(st->l1.hardware, bcs))
+ return (-1);
+ st->l1.bcs = bcs;
+ st->l2.l2l1 = hscx_l2l1;
+ setstack_manager(st);
+ bcs->st = st;
+ setstack_l1_B(st);
+ return (0);
+}
+
+void
+clear_pending_hscx_ints(struct IsdnCardState *cs)
+{
+ int val, eval;
+
+ val = cs->BC_Read_Reg(cs, 1, HSCX_ISTA);
+ debugl1(cs, "HSCX B ISTA %x", val);
+ if (val & 0x01) {
+ eval = cs->BC_Read_Reg(cs, 1, HSCX_EXIR);
+ debugl1(cs, "HSCX B EXIR %x", eval);
+ }
+ if (val & 0x02) {
+ eval = cs->BC_Read_Reg(cs, 0, HSCX_EXIR);
+ debugl1(cs, "HSCX A EXIR %x", eval);
+ }
+ val = cs->BC_Read_Reg(cs, 0, HSCX_ISTA);
+ debugl1(cs, "HSCX A ISTA %x", val);
+ val = cs->BC_Read_Reg(cs, 1, HSCX_STAR);
+ debugl1(cs, "HSCX B STAR %x", val);
+ val = cs->BC_Read_Reg(cs, 0, HSCX_STAR);
+ debugl1(cs, "HSCX A STAR %x", val);
+ /* disable all IRQ */
+ cs->BC_Write_Reg(cs, 0, HSCX_MASK, 0xFF);
+ cs->BC_Write_Reg(cs, 1, HSCX_MASK, 0xFF);
+}
+
+void
+inithscx(struct IsdnCardState *cs)
+{
+ cs->bcs[0].BC_SetStack = setstack_hscx;
+ cs->bcs[1].BC_SetStack = setstack_hscx;
+ cs->bcs[0].BC_Close = close_hscxstate;
+ cs->bcs[1].BC_Close = close_hscxstate;
+ cs->bcs[0].hw.hscx.hscx = 0;
+ cs->bcs[1].hw.hscx.hscx = 1;
+ cs->bcs[0].hw.hscx.tsaxr0 = 0x2f;
+ cs->bcs[0].hw.hscx.tsaxr1 = 3;
+ cs->bcs[1].hw.hscx.tsaxr0 = 0x2f;
+ cs->bcs[1].hw.hscx.tsaxr1 = 3;
+ modehscx(cs->bcs, 0, 0);
+ modehscx(cs->bcs + 1, 0, 0);
+}
+
+void
+inithscxisac(struct IsdnCardState *cs, int part)
+{
+ if (part & 1) {
+ clear_pending_isac_ints(cs);
+ clear_pending_hscx_ints(cs);
+ initisac(cs);
+ inithscx(cs);
+ }
+ if (part & 2) {
+ /* Reenable all IRQ */
+ cs->writeisac(cs, ISAC_MASK, 0);
+ cs->BC_Write_Reg(cs, 0, HSCX_MASK, 0);
+ cs->BC_Write_Reg(cs, 1, HSCX_MASK, 0);
+ /* RESET Receiver and Transmitter */
+ cs->writeisac(cs, ISAC_CMDR, 0x41);
+ }
+}
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