278 lines
7.3 KiB
C
278 lines
7.3 KiB
C
/* $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);
|
|
}
|
|
}
|