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path: root/drivers/isdn/hisax/hfc_2bds0.c
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Diffstat (limited to 'drivers/isdn/hisax/hfc_2bds0.c')
-rw-r--r--drivers/isdn/hisax/hfc_2bds0.c1078
1 files changed, 0 insertions, 1078 deletions
diff --git a/drivers/isdn/hisax/hfc_2bds0.c b/drivers/isdn/hisax/hfc_2bds0.c
deleted file mode 100644
index 3715fa0343db..000000000000
--- a/drivers/isdn/hisax/hfc_2bds0.c
+++ /dev/null
@@ -1,1078 +0,0 @@
-/* $Id: hfc_2bds0.c,v 1.18.2.6 2004/02/11 13:21:33 keil Exp $
- *
- * specific routines for CCD's HFC 2BDS0
- *
- * 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 <linux/sched.h>
-#include <linux/slab.h>
-#include "hisax.h"
-#include "hfc_2bds0.h"
-#include "isdnl1.h"
-#include <linux/interrupt.h>
-/*
- #define KDEBUG_DEF
- #include "kdebug.h"
-*/
-
-#define byteout(addr, val) outb(val, addr)
-#define bytein(addr) inb(addr)
-
-static void
-dummyf(struct IsdnCardState *cs, u_char *data, int size)
-{
- printk(KERN_WARNING "HiSax: hfcd dummy fifo called\n");
-}
-
-static inline u_char
-ReadReg(struct IsdnCardState *cs, int data, u_char reg)
-{
- register u_char ret;
-
- if (data) {
- if (cs->hw.hfcD.cip != reg) {
- cs->hw.hfcD.cip = reg;
- byteout(cs->hw.hfcD.addr | 1, reg);
- }
- ret = bytein(cs->hw.hfcD.addr);
-#ifdef HFC_REG_DEBUG
- if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
- debugl1(cs, "t3c RD %02x %02x", reg, ret);
-#endif
- } else
- ret = bytein(cs->hw.hfcD.addr | 1);
- return (ret);
-}
-
-static inline void
-WriteReg(struct IsdnCardState *cs, int data, u_char reg, u_char value)
-{
- if (cs->hw.hfcD.cip != reg) {
- cs->hw.hfcD.cip = reg;
- byteout(cs->hw.hfcD.addr | 1, reg);
- }
- if (data)
- byteout(cs->hw.hfcD.addr, value);
-#ifdef HFC_REG_DEBUG
- if (cs->debug & L1_DEB_HSCX_FIFO && (data != HFCD_DATA_NODEB))
- debugl1(cs, "t3c W%c %02x %02x", data ? 'D' : 'C', reg, value);
-#endif
-}
-
-/* Interface functions */
-
-static u_char
-readreghfcd(struct IsdnCardState *cs, u_char offset)
-{
- return (ReadReg(cs, HFCD_DATA, offset));
-}
-
-static void
-writereghfcd(struct IsdnCardState *cs, u_char offset, u_char value)
-{
- WriteReg(cs, HFCD_DATA, offset, value);
-}
-
-static inline int
-WaitForBusy(struct IsdnCardState *cs)
-{
- int to = 130;
-
- while (!(ReadReg(cs, HFCD_DATA, HFCD_STAT) & HFCD_BUSY) && to) {
- udelay(1);
- to--;
- }
- if (!to)
- printk(KERN_WARNING "HiSax: WaitForBusy timeout\n");
- return (to);
-}
-
-static inline int
-WaitNoBusy(struct IsdnCardState *cs)
-{
- int to = 130;
-
- while ((ReadReg(cs, HFCD_STATUS, HFCD_STATUS) & HFCD_BUSY) && to) {
- udelay(1);
- to--;
- }
- if (!to)
- printk(KERN_WARNING "HiSax: WaitNoBusy timeout\n");
- return (to);
-}
-
-static int
-SelFiFo(struct IsdnCardState *cs, u_char FiFo)
-{
- u_char cip;
-
- if (cs->hw.hfcD.fifo == FiFo)
- return (1);
- switch (FiFo) {
- case 0: cip = HFCB_FIFO | HFCB_Z1 | HFCB_SEND | HFCB_B1;
- break;
- case 1: cip = HFCB_FIFO | HFCB_Z1 | HFCB_REC | HFCB_B1;
- break;
- case 2: cip = HFCB_FIFO | HFCB_Z1 | HFCB_SEND | HFCB_B2;
- break;
- case 3: cip = HFCB_FIFO | HFCB_Z1 | HFCB_REC | HFCB_B2;
- break;
- case 4: cip = HFCD_FIFO | HFCD_Z1 | HFCD_SEND;
- break;
- case 5: cip = HFCD_FIFO | HFCD_Z1 | HFCD_REC;
- break;
- default:
- debugl1(cs, "SelFiFo Error");
- return (0);
- }
- cs->hw.hfcD.fifo = FiFo;
- WaitNoBusy(cs);
- cs->BC_Write_Reg(cs, HFCD_DATA, cip, 0);
- WaitForBusy(cs);
- return (2);
-}
-
-static int
-GetFreeFifoBytes_B(struct BCState *bcs)
-{
- int s;
-
- if (bcs->hw.hfc.f1 == bcs->hw.hfc.f2)
- return (bcs->cs->hw.hfcD.bfifosize);
- s = bcs->hw.hfc.send[bcs->hw.hfc.f1] - bcs->hw.hfc.send[bcs->hw.hfc.f2];
- if (s <= 0)
- s += bcs->cs->hw.hfcD.bfifosize;
- s = bcs->cs->hw.hfcD.bfifosize - s;
- return (s);
-}
-
-static int
-GetFreeFifoBytes_D(struct IsdnCardState *cs)
-{
- int s;
-
- if (cs->hw.hfcD.f1 == cs->hw.hfcD.f2)
- return (cs->hw.hfcD.dfifosize);
- s = cs->hw.hfcD.send[cs->hw.hfcD.f1] - cs->hw.hfcD.send[cs->hw.hfcD.f2];
- if (s <= 0)
- s += cs->hw.hfcD.dfifosize;
- s = cs->hw.hfcD.dfifosize - s;
- return (s);
-}
-
-static int
-ReadZReg(struct IsdnCardState *cs, u_char reg)
-{
- int val;
-
- WaitNoBusy(cs);
- val = 256 * ReadReg(cs, HFCD_DATA, reg | HFCB_Z_HIGH);
- WaitNoBusy(cs);
- val += ReadReg(cs, HFCD_DATA, reg | HFCB_Z_LOW);
- return (val);
-}
-
-static struct sk_buff
-*hfc_empty_fifo(struct BCState *bcs, int count)
-{
- u_char *ptr;
- struct sk_buff *skb;
- struct IsdnCardState *cs = bcs->cs;
- int idx;
- int chksum;
- u_char stat, cip;
-
- if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
- debugl1(cs, "hfc_empty_fifo");
- idx = 0;
- if (count > HSCX_BUFMAX + 3) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "hfc_empty_fifo: incoming packet too large");
- cip = HFCB_FIFO | HFCB_FIFO_OUT | HFCB_REC | HFCB_CHANNEL(bcs->channel);
- while (idx++ < count) {
- WaitNoBusy(cs);
- ReadReg(cs, HFCD_DATA_NODEB, cip);
- }
- skb = NULL;
- } else if (count < 4) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "hfc_empty_fifo: incoming packet too small");
- cip = HFCB_FIFO | HFCB_FIFO_OUT | HFCB_REC | HFCB_CHANNEL(bcs->channel);
-#ifdef ERROR_STATISTIC
- bcs->err_inv++;
-#endif
- while ((idx++ < count) && WaitNoBusy(cs))
- ReadReg(cs, HFCD_DATA_NODEB, cip);
- skb = NULL;
- } else if (!(skb = dev_alloc_skb(count - 3)))
- printk(KERN_WARNING "HFC: receive out of memory\n");
- else {
- ptr = skb_put(skb, count - 3);
- idx = 0;
- cip = HFCB_FIFO | HFCB_FIFO_OUT | HFCB_REC | HFCB_CHANNEL(bcs->channel);
- while (idx < (count - 3)) {
- if (!WaitNoBusy(cs))
- break;
- *ptr = ReadReg(cs, HFCD_DATA_NODEB, cip);
- ptr++;
- idx++;
- }
- if (idx != count - 3) {
- debugl1(cs, "RFIFO BUSY error");
- printk(KERN_WARNING "HFC FIFO channel %d BUSY Error\n", bcs->channel);
- dev_kfree_skb_irq(skb);
- skb = NULL;
- } else {
- WaitNoBusy(cs);
- chksum = (ReadReg(cs, HFCD_DATA, cip) << 8);
- WaitNoBusy(cs);
- chksum += ReadReg(cs, HFCD_DATA, cip);
- WaitNoBusy(cs);
- stat = ReadReg(cs, HFCD_DATA, cip);
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "hfc_empty_fifo %d chksum %x stat %x",
- bcs->channel, chksum, stat);
- if (stat) {
- debugl1(cs, "FIFO CRC error");
- dev_kfree_skb_irq(skb);
- skb = NULL;
-#ifdef ERROR_STATISTIC
- bcs->err_crc++;
-#endif
- }
- }
- }
- WaitForBusy(cs);
- WaitNoBusy(cs);
- stat = ReadReg(cs, HFCD_DATA, HFCB_FIFO | HFCB_F2_INC |
- HFCB_REC | HFCB_CHANNEL(bcs->channel));
- WaitForBusy(cs);
- return (skb);
-}
-
-static void
-hfc_fill_fifo(struct BCState *bcs)
-{
- struct IsdnCardState *cs = bcs->cs;
- int idx, fcnt;
- int count;
- u_char cip;
-
- if (!bcs->tx_skb)
- return;
- if (bcs->tx_skb->len <= 0)
- return;
- SelFiFo(cs, HFCB_SEND | HFCB_CHANNEL(bcs->channel));
- cip = HFCB_FIFO | HFCB_F1 | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
- WaitNoBusy(cs);
- bcs->hw.hfc.f1 = ReadReg(cs, HFCD_DATA, cip);
- WaitNoBusy(cs);
- cip = HFCB_FIFO | HFCB_F2 | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
- WaitNoBusy(cs);
- bcs->hw.hfc.f2 = ReadReg(cs, HFCD_DATA, cip);
- bcs->hw.hfc.send[bcs->hw.hfc.f1] = ReadZReg(cs, HFCB_FIFO | HFCB_Z1 | HFCB_SEND | HFCB_CHANNEL(bcs->channel));
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "hfc_fill_fifo %d f1(%d) f2(%d) z1(%x)",
- bcs->channel, bcs->hw.hfc.f1, bcs->hw.hfc.f2,
- bcs->hw.hfc.send[bcs->hw.hfc.f1]);
- fcnt = bcs->hw.hfc.f1 - bcs->hw.hfc.f2;
- if (fcnt < 0)
- fcnt += 32;
- if (fcnt > 30) {
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "hfc_fill_fifo more as 30 frames");
- return;
- }
- count = GetFreeFifoBytes_B(bcs);
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "hfc_fill_fifo %d count(%u/%d),%lx",
- bcs->channel, bcs->tx_skb->len,
- count, current->state);
- if (count < bcs->tx_skb->len) {
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "hfc_fill_fifo no fifo mem");
- return;
- }
- cip = HFCB_FIFO | HFCB_FIFO_IN | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
- idx = 0;
- WaitForBusy(cs);
- WaitNoBusy(cs);
- WriteReg(cs, HFCD_DATA_NODEB, cip, bcs->tx_skb->data[idx++]);
- while (idx < bcs->tx_skb->len) {
- if (!WaitNoBusy(cs))
- break;
- WriteReg(cs, HFCD_DATA_NODEB, cip, bcs->tx_skb->data[idx]);
- idx++;
- }
- if (idx != bcs->tx_skb->len) {
- debugl1(cs, "FIFO Send BUSY error");
- printk(KERN_WARNING "HFC S FIFO channel %d BUSY Error\n", bcs->channel);
- } else {
- bcs->tx_cnt -= bcs->tx_skb->len;
- if (test_bit(FLG_LLI_L1WAKEUP, &bcs->st->lli.flag) &&
- (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
- u_long flags;
- spin_lock_irqsave(&bcs->aclock, flags);
- bcs->ackcnt += bcs->tx_skb->len;
- spin_unlock_irqrestore(&bcs->aclock, flags);
- schedule_event(bcs, B_ACKPENDING);
- }
- dev_kfree_skb_any(bcs->tx_skb);
- bcs->tx_skb = NULL;
- }
- WaitForBusy(cs);
- WaitNoBusy(cs);
- ReadReg(cs, HFCD_DATA, HFCB_FIFO | HFCB_F1_INC | HFCB_SEND | HFCB_CHANNEL(bcs->channel));
- WaitForBusy(cs);
- test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
- return;
-}
-
-static void
-hfc_send_data(struct BCState *bcs)
-{
- struct IsdnCardState *cs = bcs->cs;
-
- if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- hfc_fill_fifo(bcs);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- } else
- debugl1(cs, "send_data %d blocked", bcs->channel);
-}
-
-static void
-main_rec_2bds0(struct BCState *bcs)
-{
- struct IsdnCardState *cs = bcs->cs;
- int z1, z2, rcnt;
- u_char f1, f2, cip;
- int receive, count = 5;
- struct sk_buff *skb;
-
-Begin:
- count--;
- if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- debugl1(cs, "rec_data %d blocked", bcs->channel);
- return;
- }
- SelFiFo(cs, HFCB_REC | HFCB_CHANNEL(bcs->channel));
- cip = HFCB_FIFO | HFCB_F1 | HFCB_REC | HFCB_CHANNEL(bcs->channel);
- WaitNoBusy(cs);
- f1 = ReadReg(cs, HFCD_DATA, cip);
- cip = HFCB_FIFO | HFCB_F2 | HFCB_REC | HFCB_CHANNEL(bcs->channel);
- WaitNoBusy(cs);
- f2 = ReadReg(cs, HFCD_DATA, cip);
- if (f1 != f2) {
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "hfc rec %d f1(%d) f2(%d)",
- bcs->channel, f1, f2);
- z1 = ReadZReg(cs, HFCB_FIFO | HFCB_Z1 | HFCB_REC | HFCB_CHANNEL(bcs->channel));
- z2 = ReadZReg(cs, HFCB_FIFO | HFCB_Z2 | HFCB_REC | HFCB_CHANNEL(bcs->channel));
- rcnt = z1 - z2;
- if (rcnt < 0)
- rcnt += cs->hw.hfcD.bfifosize;
- rcnt++;
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "hfc rec %d z1(%x) z2(%x) cnt(%d)",
- bcs->channel, z1, z2, rcnt);
- if ((skb = hfc_empty_fifo(bcs, rcnt))) {
- skb_queue_tail(&bcs->rqueue, skb);
- schedule_event(bcs, B_RCVBUFREADY);
- }
- rcnt = f1 - f2;
- if (rcnt < 0)
- rcnt += 32;
- if (rcnt > 1)
- receive = 1;
- else
- receive = 0;
- } else
- receive = 0;
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- if (count && receive)
- goto Begin;
- return;
-}
-
-static void
-mode_2bs0(struct BCState *bcs, int mode, int bc)
-{
- struct IsdnCardState *cs = bcs->cs;
-
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "HFCD bchannel mode %d bchan %d/%d",
- mode, bc, bcs->channel);
- bcs->mode = mode;
- bcs->channel = bc;
- switch (mode) {
- case (L1_MODE_NULL):
- if (bc) {
- cs->hw.hfcD.conn |= 0x18;
- cs->hw.hfcD.sctrl &= ~SCTRL_B2_ENA;
- } else {
- cs->hw.hfcD.conn |= 0x3;
- cs->hw.hfcD.sctrl &= ~SCTRL_B1_ENA;
- }
- break;
- case (L1_MODE_TRANS):
- if (bc) {
- cs->hw.hfcD.ctmt |= 2;
- cs->hw.hfcD.conn &= ~0x18;
- cs->hw.hfcD.sctrl |= SCTRL_B2_ENA;
- } else {
- cs->hw.hfcD.ctmt |= 1;
- cs->hw.hfcD.conn &= ~0x3;
- cs->hw.hfcD.sctrl |= SCTRL_B1_ENA;
- }
- break;
- case (L1_MODE_HDLC):
- if (bc) {
- cs->hw.hfcD.ctmt &= ~2;
- cs->hw.hfcD.conn &= ~0x18;
- cs->hw.hfcD.sctrl |= SCTRL_B2_ENA;
- } else {
- cs->hw.hfcD.ctmt &= ~1;
- cs->hw.hfcD.conn &= ~0x3;
- cs->hw.hfcD.sctrl |= SCTRL_B1_ENA;
- }
- break;
- }
- WriteReg(cs, HFCD_DATA, HFCD_SCTRL, cs->hw.hfcD.sctrl);
- WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcD.ctmt);
- WriteReg(cs, HFCD_DATA, HFCD_CONN, cs->hw.hfcD.conn);
-}
-
-static void
-hfc_l2l1(struct PStack *st, int pr, void *arg)
-{
- struct BCState *bcs = st->l1.bcs;
- struct sk_buff *skb = arg;
- u_long flags;
-
- 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->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 "hfc_l2l1: this shouldn't happen\n");
- } else {
-// test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
- bcs->tx_skb = skb;
- 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);
- mode_2bs0(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);
- mode_2bs0(bcs, 0, st->l1.bc);
- spin_unlock_irqrestore(&bcs->cs->lock, flags);
- st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
- break;
- }
-}
-
-static void
-close_2bs0(struct BCState *bcs)
-{
- mode_2bs0(bcs, 0, bcs->channel);
- if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
- 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);
- }
- }
-}
-
-static int
-open_hfcstate(struct IsdnCardState *cs, struct BCState *bcs)
-{
- if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
- 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->tx_cnt = 0;
- return (0);
-}
-
-static int
-setstack_2b(struct PStack *st, struct BCState *bcs)
-{
- bcs->channel = st->l1.bc;
- if (open_hfcstate(st->l1.hardware, bcs))
- return (-1);
- st->l1.bcs = bcs;
- st->l2.l2l1 = hfc_l2l1;
- setstack_manager(st);
- bcs->st = st;
- setstack_l1_B(st);
- return (0);
-}
-
-static void
-hfcd_bh(struct work_struct *work)
-{
- struct IsdnCardState *cs =
- container_of(work, struct IsdnCardState, tqueue);
-
- if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
- switch (cs->dc.hfcd.ph_state) {
- case (0):
- l1_msg(cs, HW_RESET | INDICATION, NULL);
- break;
- case (3):
- l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
- break;
- case (8):
- l1_msg(cs, HW_RSYNC | INDICATION, NULL);
- break;
- case (6):
- l1_msg(cs, HW_INFO2 | INDICATION, NULL);
- break;
- case (7):
- l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
- break;
- default:
- break;
- }
- }
- 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);
-}
-
-static
-int receive_dmsg(struct IsdnCardState *cs)
-{
- struct sk_buff *skb;
- int idx;
- int rcnt, z1, z2;
- u_char stat, cip, f1, f2;
- int chksum;
- int count = 5;
- u_char *ptr;
-
- if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- debugl1(cs, "rec_dmsg blocked");
- return (1);
- }
- SelFiFo(cs, 4 | HFCD_REC);
- cip = HFCD_FIFO | HFCD_F1 | HFCD_REC;
- WaitNoBusy(cs);
- f1 = cs->readisac(cs, cip) & 0xf;
- cip = HFCD_FIFO | HFCD_F2 | HFCD_REC;
- WaitNoBusy(cs);
- f2 = cs->readisac(cs, cip) & 0xf;
- while ((f1 != f2) && count--) {
- z1 = ReadZReg(cs, HFCD_FIFO | HFCD_Z1 | HFCD_REC);
- z2 = ReadZReg(cs, HFCD_FIFO | HFCD_Z2 | HFCD_REC);
- rcnt = z1 - z2;
- if (rcnt < 0)
- rcnt += cs->hw.hfcD.dfifosize;
- rcnt++;
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "hfcd recd f1(%d) f2(%d) z1(%x) z2(%x) cnt(%d)",
- f1, f2, z1, z2, rcnt);
- idx = 0;
- cip = HFCD_FIFO | HFCD_FIFO_OUT | HFCD_REC;
- if (rcnt > MAX_DFRAME_LEN + 3) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "empty_fifo d: incoming packet too large");
- while (idx < rcnt) {
- if (!(WaitNoBusy(cs)))
- break;
- ReadReg(cs, HFCD_DATA_NODEB, cip);
- idx++;
- }
- } else if (rcnt < 4) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "empty_fifo d: incoming packet too small");
- while ((idx++ < rcnt) && WaitNoBusy(cs))
- ReadReg(cs, HFCD_DATA_NODEB, cip);
- } else if ((skb = dev_alloc_skb(rcnt - 3))) {
- ptr = skb_put(skb, rcnt - 3);
- while (idx < (rcnt - 3)) {
- if (!(WaitNoBusy(cs)))
- break;
- *ptr = ReadReg(cs, HFCD_DATA_NODEB, cip);
- idx++;
- ptr++;
- }
- if (idx != (rcnt - 3)) {
- debugl1(cs, "RFIFO D BUSY error");
- printk(KERN_WARNING "HFC DFIFO channel BUSY Error\n");
- dev_kfree_skb_irq(skb);
- skb = NULL;
-#ifdef ERROR_STATISTIC
- cs->err_rx++;
-#endif
- } else {
- WaitNoBusy(cs);
- chksum = (ReadReg(cs, HFCD_DATA, cip) << 8);
- WaitNoBusy(cs);
- chksum += ReadReg(cs, HFCD_DATA, cip);
- WaitNoBusy(cs);
- stat = ReadReg(cs, HFCD_DATA, cip);
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "empty_dfifo chksum %x stat %x",
- chksum, stat);
- if (stat) {
- debugl1(cs, "FIFO CRC error");
- dev_kfree_skb_irq(skb);
- skb = NULL;
-#ifdef ERROR_STATISTIC
- cs->err_crc++;
-#endif
- } else {
- skb_queue_tail(&cs->rq, skb);
- schedule_event(cs, D_RCVBUFREADY);
- }
- }
- } else
- printk(KERN_WARNING "HFC: D receive out of memory\n");
- WaitForBusy(cs);
- cip = HFCD_FIFO | HFCD_F2_INC | HFCD_REC;
- WaitNoBusy(cs);
- stat = ReadReg(cs, HFCD_DATA, cip);
- WaitForBusy(cs);
- cip = HFCD_FIFO | HFCD_F2 | HFCD_REC;
- WaitNoBusy(cs);
- f2 = cs->readisac(cs, cip) & 0xf;
- }
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- return (1);
-}
-
-static void
-hfc_fill_dfifo(struct IsdnCardState *cs)
-{
- int idx, fcnt;
- int count;
- u_char cip;
-
- if (!cs->tx_skb)
- return;
- if (cs->tx_skb->len <= 0)
- return;
-
- SelFiFo(cs, 4 | HFCD_SEND);
- cip = HFCD_FIFO | HFCD_F1 | HFCD_SEND;
- WaitNoBusy(cs);
- cs->hw.hfcD.f1 = ReadReg(cs, HFCD_DATA, cip) & 0xf;
- WaitNoBusy(cs);
- cip = HFCD_FIFO | HFCD_F2 | HFCD_SEND;
- cs->hw.hfcD.f2 = ReadReg(cs, HFCD_DATA, cip) & 0xf;
- cs->hw.hfcD.send[cs->hw.hfcD.f1] = ReadZReg(cs, HFCD_FIFO | HFCD_Z1 | HFCD_SEND);
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "hfc_fill_Dfifo f1(%d) f2(%d) z1(%x)",
- cs->hw.hfcD.f1, cs->hw.hfcD.f2,
- cs->hw.hfcD.send[cs->hw.hfcD.f1]);
- fcnt = cs->hw.hfcD.f1 - cs->hw.hfcD.f2;
- if (fcnt < 0)
- fcnt += 16;
- if (fcnt > 14) {
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "hfc_fill_Dfifo more as 14 frames");
- return;
- }
- count = GetFreeFifoBytes_D(cs);
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "hfc_fill_Dfifo count(%u/%d)",
- cs->tx_skb->len, count);
- if (count < cs->tx_skb->len) {
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "hfc_fill_Dfifo no fifo mem");
- return;
- }
- cip = HFCD_FIFO | HFCD_FIFO_IN | HFCD_SEND;
- idx = 0;
- WaitForBusy(cs);
- WaitNoBusy(cs);
- WriteReg(cs, HFCD_DATA_NODEB, cip, cs->tx_skb->data[idx++]);
- while (idx < cs->tx_skb->len) {
- if (!(WaitNoBusy(cs)))
- break;
- WriteReg(cs, HFCD_DATA_NODEB, cip, cs->tx_skb->data[idx]);
- idx++;
- }
- if (idx != cs->tx_skb->len) {
- debugl1(cs, "DFIFO Send BUSY error");
- printk(KERN_WARNING "HFC S DFIFO channel BUSY Error\n");
- }
- WaitForBusy(cs);
- WaitNoBusy(cs);
- ReadReg(cs, HFCD_DATA, HFCD_FIFO | HFCD_F1_INC | HFCD_SEND);
- dev_kfree_skb_any(cs->tx_skb);
- cs->tx_skb = NULL;
- WaitForBusy(cs);
- return;
-}
-
-static
-struct BCState *Sel_BCS(struct IsdnCardState *cs, int channel)
-{
- if (cs->bcs[0].mode && (cs->bcs[0].channel == channel))
- return (&cs->bcs[0]);
- else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel))
- return (&cs->bcs[1]);
- else
- return (NULL);
-}
-
-void
-hfc2bds0_interrupt(struct IsdnCardState *cs, u_char val)
-{
- u_char exval;
- struct BCState *bcs;
- int count = 15;
-
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "HFCD irq %x %s", val,
- test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ?
- "locked" : "unlocked");
- val &= cs->hw.hfcD.int_m1;
- if (val & 0x40) { /* TE state machine irq */
- exval = cs->readisac(cs, HFCD_STATES) & 0xf;
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcd.ph_state,
- exval);
- cs->dc.hfcd.ph_state = exval;
- schedule_event(cs, D_L1STATECHANGE);
- val &= ~0x40;
- }
- while (val) {
- if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- cs->hw.hfcD.int_s1 |= val;
- return;
- }
- if (cs->hw.hfcD.int_s1 & 0x18) {
- exval = val;
- val = cs->hw.hfcD.int_s1;
- cs->hw.hfcD.int_s1 = exval;
- }
- if (val & 0x08) {
- if (!(bcs = Sel_BCS(cs, 0))) {
- if (cs->debug)
- debugl1(cs, "hfcd spurious 0x08 IRQ");
- } else
- main_rec_2bds0(bcs);
- }
- if (val & 0x10) {
- if (!(bcs = Sel_BCS(cs, 1))) {
- if (cs->debug)
- debugl1(cs, "hfcd spurious 0x10 IRQ");
- } else
- main_rec_2bds0(bcs);
- }
- if (val & 0x01) {
- if (!(bcs = Sel_BCS(cs, 0))) {
- if (cs->debug)
- debugl1(cs, "hfcd spurious 0x01 IRQ");
- } else {
- if (bcs->tx_skb) {
- if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- hfc_fill_fifo(bcs);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- } else
- debugl1(cs, "fill_data %d blocked", bcs->channel);
- } else {
- if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
- if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- hfc_fill_fifo(bcs);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- } else
- debugl1(cs, "fill_data %d blocked", bcs->channel);
- } else {
- schedule_event(bcs, B_XMTBUFREADY);
- }
- }
- }
- }
- if (val & 0x02) {
- if (!(bcs = Sel_BCS(cs, 1))) {
- if (cs->debug)
- debugl1(cs, "hfcd spurious 0x02 IRQ");
- } else {
- if (bcs->tx_skb) {
- if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- hfc_fill_fifo(bcs);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- } else
- debugl1(cs, "fill_data %d blocked", bcs->channel);
- } else {
- if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
- if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- hfc_fill_fifo(bcs);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- } else
- debugl1(cs, "fill_data %d blocked", bcs->channel);
- } else {
- schedule_event(bcs, B_XMTBUFREADY);
- }
- }
- }
- }
- if (val & 0x20) { /* receive dframe */
- receive_dmsg(cs);
- }
- if (val & 0x04) { /* dframe transmitted */
- 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))
- schedule_event(cs, D_CLEARBUSY);
- if (cs->tx_skb) {
- if (cs->tx_skb->len) {
- if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- hfc_fill_dfifo(cs);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- } else {
- debugl1(cs, "hfc_fill_dfifo irq blocked");
- }
- goto afterXPR;
- } else {
- dev_kfree_skb_irq(cs->tx_skb);
- cs->tx_cnt = 0;
- cs->tx_skb = NULL;
- }
- }
- if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
- cs->tx_cnt = 0;
- if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- hfc_fill_dfifo(cs);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- } else {
- debugl1(cs, "hfc_fill_dfifo irq blocked");
- }
- } else
- schedule_event(cs, D_XMTBUFREADY);
- }
- afterXPR:
- if (cs->hw.hfcD.int_s1 && count--) {
- val = cs->hw.hfcD.int_s1;
- cs->hw.hfcD.int_s1 = 0;
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "HFCD irq %x loop %d", val, 15-count);
- } else
- val = 0;
- }
-}
-
-static void
-HFCD_l1hw(struct PStack *st, int pr, void *arg)
-{
- struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
- struct sk_buff *skb = arg;
- u_long flags;
-
- 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);
- spin_lock_irqsave(&cs->lock, flags);
- 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
- if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- hfc_fill_dfifo(cs);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- } else
- debugl1(cs, "hfc_fill_dfifo blocked");
-
- }
- spin_unlock_irqrestore(&cs->lock, flags);
- break;
- case (PH_PULL | INDICATION):
- spin_lock_irqsave(&cs->lock, flags);
- 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);
- spin_unlock_irqrestore(&cs->lock, flags);
- 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
- if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- hfc_fill_dfifo(cs);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- } else
- debugl1(cs, "hfc_fill_dfifo blocked");
- spin_unlock_irqrestore(&cs->lock, flags);
- 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):
- spin_lock_irqsave(&cs->lock, flags);
- cs->writeisac(cs, HFCD_STATES, HFCD_LOAD_STATE | 3); /* HFC ST 3 */
- udelay(6);
- cs->writeisac(cs, HFCD_STATES, 3); /* HFC ST 2 */
- cs->hw.hfcD.mst_m |= HFCD_MASTER;
- cs->writeisac(cs, HFCD_MST_MODE, cs->hw.hfcD.mst_m);
- cs->writeisac(cs, HFCD_STATES, HFCD_ACTIVATE | HFCD_DO_ACTION);
- spin_unlock_irqrestore(&cs->lock, flags);
- l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
- break;
- case (HW_ENABLE | REQUEST):
- spin_lock_irqsave(&cs->lock, flags);
- cs->writeisac(cs, HFCD_STATES, HFCD_ACTIVATE | HFCD_DO_ACTION);
- spin_unlock_irqrestore(&cs->lock, flags);
- break;
- case (HW_DEACTIVATE | REQUEST):
- spin_lock_irqsave(&cs->lock, flags);
- cs->hw.hfcD.mst_m &= ~HFCD_MASTER;
- cs->writeisac(cs, HFCD_MST_MODE, cs->hw.hfcD.mst_m);
- spin_unlock_irqrestore(&cs->lock, flags);
- break;
- case (HW_INFO3 | REQUEST):
- spin_lock_irqsave(&cs->lock, flags);
- cs->hw.hfcD.mst_m |= HFCD_MASTER;
- cs->writeisac(cs, HFCD_MST_MODE, cs->hw.hfcD.mst_m);
- spin_unlock_irqrestore(&cs->lock, flags);
- break;
- default:
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "hfcd_l1hw unknown pr %4x", pr);
- break;
- }
-}
-
-static void
-setstack_hfcd(struct PStack *st, struct IsdnCardState *cs)
-{
- st->l1.l1hw = HFCD_l1hw;
-}
-
-static void
-hfc_dbusy_timer(struct timer_list *t)
-{
-}
-
-static unsigned int
-*init_send_hfcd(int cnt)
-{
- int i;
- unsigned *send;
-
- if (!(send = kmalloc_array(cnt, sizeof(unsigned int), GFP_ATOMIC))) {
- printk(KERN_WARNING
- "HiSax: No memory for hfcd.send\n");
- return (NULL);
- }
- for (i = 0; i < cnt; i++)
- send[i] = 0x1fff;
- return (send);
-}
-
-void
-init2bds0(struct IsdnCardState *cs)
-{
- cs->setstack_d = setstack_hfcd;
- if (!cs->hw.hfcD.send)
- cs->hw.hfcD.send = init_send_hfcd(16);
- if (!cs->bcs[0].hw.hfc.send)
- cs->bcs[0].hw.hfc.send = init_send_hfcd(32);
- if (!cs->bcs[1].hw.hfc.send)
- cs->bcs[1].hw.hfc.send = init_send_hfcd(32);
- cs->BC_Send_Data = &hfc_send_data;
- cs->bcs[0].BC_SetStack = setstack_2b;
- cs->bcs[1].BC_SetStack = setstack_2b;
- cs->bcs[0].BC_Close = close_2bs0;
- cs->bcs[1].BC_Close = close_2bs0;
- mode_2bs0(cs->bcs, 0, 0);
- mode_2bs0(cs->bcs + 1, 0, 1);
-}
-
-void
-release2bds0(struct IsdnCardState *cs)
-{
- kfree(cs->bcs[0].hw.hfc.send);
- cs->bcs[0].hw.hfc.send = NULL;
- kfree(cs->bcs[1].hw.hfc.send);
- cs->bcs[1].hw.hfc.send = NULL;
- kfree(cs->hw.hfcD.send);
- cs->hw.hfcD.send = NULL;
-}
-
-void
-set_cs_func(struct IsdnCardState *cs)
-{
- cs->readisac = &readreghfcd;
- cs->writeisac = &writereghfcd;
- cs->readisacfifo = &dummyf;
- cs->writeisacfifo = &dummyf;
- cs->BC_Read_Reg = &ReadReg;
- cs->BC_Write_Reg = &WriteReg;
- timer_setup(&cs->dbusytimer, hfc_dbusy_timer, 0);
- INIT_WORK(&cs->tqueue, hfcd_bh);
-}