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path: root/drivers/isdn/hisax/amd7930_fn.c
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Diffstat (limited to 'drivers/isdn/hisax/amd7930_fn.c')
-rw-r--r--drivers/isdn/hisax/amd7930_fn.c794
1 files changed, 0 insertions, 794 deletions
diff --git a/drivers/isdn/hisax/amd7930_fn.c b/drivers/isdn/hisax/amd7930_fn.c
deleted file mode 100644
index 6c336366128c..000000000000
--- a/drivers/isdn/hisax/amd7930_fn.c
+++ /dev/null
@@ -1,794 +0,0 @@
-/* gerdes_amd7930.c,v 0.99 2001/10/02
- *
- * gerdes_amd7930.c Amd 79C30A and 79C32A specific routines
- * (based on HiSax driver by Karsten Keil)
- *
- * Author Christoph Ersfeld <info@formula-n.de>
- * Formula-n Europe AG (www.formula-n.com)
- * previously Gerdes AG
- *
- *
- * This file is (c) under GNU PUBLIC LICENSE
- *
- *
- * Notes:
- * Version 0.99 is the first release of this driver and there are
- * certainly a few bugs.
- *
- * Please don't report any malfunction to me without sending
- * (compressed) debug-logs.
- * It would be nearly impossible to retrace it.
- *
- * Log D-channel-processing as follows:
- *
- * 1. Load hisax with card-specific parameters, this example ist for
- * Formula-n enter:now ISDN PCI and compatible
- * (f.e. Gerdes Power ISDN PCI)
- *
- * modprobe hisax type=41 protocol=2 id=gerdes
- *
- * if you chose an other value for id, you need to modify the
- * code below, too.
- *
- * 2. set debug-level
- *
- * hisaxctrl gerdes 1 0x3ff
- * hisaxctrl gerdes 11 0x4f
- * cat /dev/isdnctrl >> ~/log &
- *
- * Please take also a look into /var/log/messages if there is
- * anything importand concerning HISAX.
- *
- *
- * Credits:
- * Programming the driver for Formula-n enter:now ISDN PCI and
- * necessary this driver for the used Amd 7930 D-channel-controller
- * was spnsored by Formula-n Europe AG.
- * Thanks to Karsten Keil and Petr Novak, who gave me support in
- * Hisax-specific questions.
- * I want so say special thanks to Carl-Friedrich Braun, who had to
- * answer a lot of questions about generally ISDN and about handling
- * of the Amd-Chip.
- *
- */
-
-
-#include "hisax.h"
-#include "isdnl1.h"
-#include "isac.h"
-#include "amd7930_fn.h"
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/gfp.h>
-
-static void Amd7930_new_ph(struct IsdnCardState *cs);
-
-static WORD initAMD[] = {
- 0x0100,
-
- 0x00A5, 3, 0x01, 0x40, 0x58, // LPR, LMR1, LMR2
- 0x0086, 1, 0x0B, // DMR1 (D-Buffer TH-Interrupts on)
- 0x0087, 1, 0xFF, // DMR2
- 0x0092, 1, 0x03, // EFCR (extended mode d-channel-fifo on)
- 0x0090, 4, 0xFE, 0xFF, 0x02, 0x0F, // FRAR4, SRAR4, DMR3, DMR4 (address recognition )
- 0x0084, 2, 0x80, 0x00, // DRLR
- 0x00C0, 1, 0x47, // PPCR1
- 0x00C8, 1, 0x01, // PPCR2
-
- 0x0102,
- 0x0107,
- 0x01A1, 1,
- 0x0121, 1,
- 0x0189, 2,
-
- 0x0045, 4, 0x61, 0x72, 0x00, 0x00, // MCR1, MCR2, MCR3, MCR4
- 0x0063, 2, 0x08, 0x08, // GX
- 0x0064, 2, 0x08, 0x08, // GR
- 0x0065, 2, 0x99, 0x00, // GER
- 0x0066, 2, 0x7C, 0x8B, // STG
- 0x0067, 2, 0x00, 0x00, // FTGR1, FTGR2
- 0x0068, 2, 0x20, 0x20, // ATGR1, ATGR2
- 0x0069, 1, 0x4F, // MMR1
- 0x006A, 1, 0x00, // MMR2
- 0x006C, 1, 0x40, // MMR3
- 0x0021, 1, 0x02, // INIT
- 0x00A3, 1, 0x40, // LMR1
-
- 0xFFFF
-};
-
-
-static void /* macro wWordAMD */
-WriteWordAmd7930(struct IsdnCardState *cs, BYTE reg, WORD val)
-{
- wByteAMD(cs, 0x00, reg);
- wByteAMD(cs, 0x01, LOBYTE(val));
- wByteAMD(cs, 0x01, HIBYTE(val));
-}
-
-static WORD /* macro rWordAMD */
-ReadWordAmd7930(struct IsdnCardState *cs, BYTE reg)
-{
- WORD res;
- /* direct access register */
- if (reg < 8) {
- res = rByteAMD(cs, reg);
- res += 256 * rByteAMD(cs, reg);
- }
- /* indirect access register */
- else {
- wByteAMD(cs, 0x00, reg);
- res = rByteAMD(cs, 0x01);
- res += 256 * rByteAMD(cs, 0x01);
- }
- return (res);
-}
-
-
-static void
-Amd7930_ph_command(struct IsdnCardState *cs, u_char command, char *s)
-{
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "AMD7930: %s: ph_command 0x%02X", s, command);
-
- cs->dc.amd7930.lmr1 = command;
- wByteAMD(cs, 0xA3, command);
-}
-
-
-
-static BYTE i430States[] = {
-// to reset F3 F4 F5 F6 F7 F8 AR from
- 0x01, 0x02, 0x00, 0x00, 0x00, 0x07, 0x05, 0x00, // init
- 0x01, 0x02, 0x00, 0x00, 0x00, 0x07, 0x05, 0x00, // reset
- 0x01, 0x02, 0x00, 0x00, 0x00, 0x09, 0x05, 0x04, // F3
- 0x01, 0x02, 0x00, 0x00, 0x1B, 0x00, 0x00, 0x00, // F4
- 0x01, 0x02, 0x00, 0x00, 0x1B, 0x00, 0x00, 0x00, // F5
- 0x01, 0x03, 0x00, 0x00, 0x00, 0x06, 0x05, 0x00, // F6
- 0x11, 0x13, 0x00, 0x00, 0x1B, 0x00, 0x15, 0x00, // F7
- 0x01, 0x03, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, // F8
- 0x01, 0x03, 0x00, 0x00, 0x00, 0x09, 0x00, 0x0A}; // AR
-
-
-/* Row init - reset F3 F4 F5 F6 F7 F8 AR */
-static BYTE stateHelper[] = { 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
-
-
-
-
-static void
-Amd7930_get_state(struct IsdnCardState *cs) {
- BYTE lsr = rByteAMD(cs, 0xA1);
- cs->dc.amd7930.ph_state = (lsr & 0x7) + 2;
- Amd7930_new_ph(cs);
-}
-
-
-
-static void
-Amd7930_new_ph(struct IsdnCardState *cs)
-{
- u_char index = stateHelper[cs->dc.amd7930.old_state] * 8 + stateHelper[cs->dc.amd7930.ph_state] - 1;
- u_char message = i430States[index];
-
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "AMD7930: new_ph %d, old_ph %d, message %d, index %d",
- cs->dc.amd7930.ph_state, cs->dc.amd7930.old_state, message & 0x0f, index);
-
- cs->dc.amd7930.old_state = cs->dc.amd7930.ph_state;
-
- /* abort transmit if nessesary */
- if ((message & 0xf0) && (cs->tx_skb)) {
- wByteAMD(cs, 0x21, 0xC2);
- wByteAMD(cs, 0x21, 0x02);
- }
-
- switch (message & 0x0f) {
-
- case (1):
- l1_msg(cs, HW_RESET | INDICATION, NULL);
- Amd7930_get_state(cs);
- break;
- case (2): /* init, Card starts in F3 */
- l1_msg(cs, HW_DEACTIVATE | CONFIRM, NULL);
- break;
- case (3):
- l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
- break;
- case (4):
- l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
- Amd7930_ph_command(cs, 0x50, "HW_ENABLE REQUEST");
- break;
- case (5):
- l1_msg(cs, HW_RSYNC | INDICATION, NULL);
- break;
- case (6):
- l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
- break;
- case (7): /* init, Card starts in F7 */
- l1_msg(cs, HW_RSYNC | INDICATION, NULL);
- l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
- break;
- case (8):
- l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
- /* fall through */
- case (9):
- Amd7930_ph_command(cs, 0x40, "HW_ENABLE REQ cleared if set");
- l1_msg(cs, HW_RSYNC | INDICATION, NULL);
- l1_msg(cs, HW_INFO2 | INDICATION, NULL);
- l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
- break;
- case (10):
- Amd7930_ph_command(cs, 0x40, "T3 expired, HW_ENABLE REQ cleared");
- cs->dc.amd7930.old_state = 3;
- break;
- case (11):
- l1_msg(cs, HW_INFO2 | INDICATION, NULL);
- break;
- default:
- break;
- }
-}
-
-
-
-static void
-Amd7930_bh(struct work_struct *work)
-{
- struct IsdnCardState *cs =
- container_of(work, struct IsdnCardState, tqueue);
- struct PStack *stptr;
-
- if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
- if (cs->debug)
- debugl1(cs, "Amd7930: bh, 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)) {
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "AMD7930: bh, D_L1STATECHANGE");
- Amd7930_new_ph(cs);
- }
-
- if (test_and_clear_bit(D_RCVBUFREADY, &cs->event)) {
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "AMD7930: bh, D_RCVBUFREADY");
- DChannel_proc_rcv(cs);
- }
-
- if (test_and_clear_bit(D_XMTBUFREADY, &cs->event)) {
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "AMD7930: bh, D_XMTBUFREADY");
- DChannel_proc_xmt(cs);
- }
-}
-
-static void
-Amd7930_empty_Dfifo(struct IsdnCardState *cs, int flag)
-{
-
- BYTE stat, der;
- BYTE *ptr;
- struct sk_buff *skb;
-
-
- if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
- debugl1(cs, "Amd7930: empty_Dfifo");
-
-
- ptr = cs->rcvbuf + cs->rcvidx;
-
- /* AMD interrupts off */
- AmdIrqOff(cs);
-
- /* read D-Channel-Fifo*/
- stat = rByteAMD(cs, 0x07); // DSR2
-
- /* while Data in Fifo ... */
- while ((stat & 2) && ((ptr-cs->rcvbuf) < MAX_DFRAME_LEN_L1)) {
- *ptr = rByteAMD(cs, 0x04); // DCRB
- ptr++;
- stat = rByteAMD(cs, 0x07); // DSR2
- cs->rcvidx = ptr - cs->rcvbuf;
-
- /* Paket ready? */
- if (stat & 1) {
-
- der = rWordAMD(cs, 0x03);
-
- /* no errors, packet ok */
- if (!der && !flag) {
- rWordAMD(cs, 0x89); // clear DRCR
-
- if ((cs->rcvidx) > 0) {
- if (!(skb = alloc_skb(cs->rcvidx, GFP_ATOMIC)))
- printk(KERN_WARNING "HiSax: Amd7930: empty_Dfifo, D receive out of memory!\n");
- else {
- /* Debugging */
- if (cs->debug & L1_DEB_ISAC_FIFO) {
- char *t = cs->dlog;
-
- t += sprintf(t, "Amd7930: empty_Dfifo cnt: %d |", cs->rcvidx);
- QuickHex(t, cs->rcvbuf, cs->rcvidx);
- debugl1(cs, "%s", cs->dlog);
- }
- /* moves received data in sk-buffer */
- skb_put_data(skb, cs->rcvbuf,
- cs->rcvidx);
- skb_queue_tail(&cs->rq, skb);
- }
- }
-
- }
- /* throw damaged packets away, reset receive-buffer, indicate RX */
- ptr = cs->rcvbuf;
- cs->rcvidx = 0;
- schedule_event(cs, D_RCVBUFREADY);
- }
- }
- /* Packet to long, overflow */
- if (cs->rcvidx >= MAX_DFRAME_LEN_L1) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "AMD7930: empty_Dfifo L2-Framelength overrun");
- cs->rcvidx = 0;
- return;
- }
- /* AMD interrupts on */
- AmdIrqOn(cs);
-}
-
-
-static void
-Amd7930_fill_Dfifo(struct IsdnCardState *cs)
-{
-
- WORD dtcrr, dtcrw, len, count;
- BYTE txstat, dmr3;
- BYTE *ptr, *deb_ptr;
-
- if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
- debugl1(cs, "Amd7930: fill_Dfifo");
-
- if ((!cs->tx_skb) || (cs->tx_skb->len <= 0))
- return;
-
- dtcrw = 0;
- if (!cs->dc.amd7930.tx_xmtlen)
- /* new Frame */
- len = dtcrw = cs->tx_skb->len;
- /* continue frame */
- else len = cs->dc.amd7930.tx_xmtlen;
-
-
- /* AMD interrupts off */
- AmdIrqOff(cs);
-
- deb_ptr = ptr = cs->tx_skb->data;
-
- /* while free place in tx-fifo available and data in sk-buffer */
- txstat = 0x10;
- while ((txstat & 0x10) && (cs->tx_cnt < len)) {
- wByteAMD(cs, 0x04, *ptr);
- ptr++;
- cs->tx_cnt++;
- txstat = rByteAMD(cs, 0x07);
- }
- count = ptr - cs->tx_skb->data;
- skb_pull(cs->tx_skb, count);
-
-
- dtcrr = rWordAMD(cs, 0x85); // DTCR
- dmr3 = rByteAMD(cs, 0x8E);
-
- if (cs->debug & L1_DEB_ISAC) {
- debugl1(cs, "Amd7930: fill_Dfifo, DMR3: 0x%02X, DTCR read: 0x%04X write: 0x%02X 0x%02X", dmr3, dtcrr, LOBYTE(dtcrw), HIBYTE(dtcrw));
- }
-
- /* writeing of dtcrw starts transmit */
- if (!cs->dc.amd7930.tx_xmtlen) {
- wWordAMD(cs, 0x85, dtcrw);
- cs->dc.amd7930.tx_xmtlen = dtcrw;
- }
-
- if (test_and_set_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
- debugl1(cs, "Amd7930: fill_Dfifo dbusytimer running");
- del_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, "Amd7930: fill_Dfifo cnt: %d |", count);
- QuickHex(t, deb_ptr, count);
- debugl1(cs, "%s", cs->dlog);
- }
- /* AMD interrupts on */
- AmdIrqOn(cs);
-}
-
-
-void Amd7930_interrupt(struct IsdnCardState *cs, BYTE irflags)
-{
- BYTE dsr1, dsr2, lsr;
- WORD der;
-
- while (irflags)
- {
-
- dsr1 = rByteAMD(cs, 0x02);
- der = rWordAMD(cs, 0x03);
- dsr2 = rByteAMD(cs, 0x07);
- lsr = rByteAMD(cs, 0xA1);
-
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: interrupt: flags: 0x%02X, DSR1: 0x%02X, DSR2: 0x%02X, LSR: 0x%02X, DER=0x%04X", irflags, dsr1, dsr2, lsr, der);
-
- /* D error -> read DER and DSR2 bit 2 */
- if (der || (dsr2 & 4)) {
-
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "Amd7930: interrupt: D error DER=0x%04X", der);
-
- /* RX, TX abort if collision detected */
- if (der & 2) {
- wByteAMD(cs, 0x21, 0xC2);
- wByteAMD(cs, 0x21, 0x02);
- 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);
- /* restart frame */
- if (cs->tx_skb) {
- skb_push(cs->tx_skb, cs->tx_cnt);
- cs->tx_cnt = 0;
- cs->dc.amd7930.tx_xmtlen = 0;
- Amd7930_fill_Dfifo(cs);
- } else {
- printk(KERN_WARNING "HiSax: Amd7930 D-Collision, no skb\n");
- debugl1(cs, "Amd7930: interrupt: D-Collision, no skb");
- }
- }
- /* remove damaged data from fifo */
- Amd7930_empty_Dfifo(cs, 1);
-
- 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);
- /* restart TX-Frame */
- if (cs->tx_skb) {
- skb_push(cs->tx_skb, cs->tx_cnt);
- cs->tx_cnt = 0;
- cs->dc.amd7930.tx_xmtlen = 0;
- Amd7930_fill_Dfifo(cs);
- }
- }
-
- /* D TX FIFO empty -> fill */
- if (irflags & 1) {
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: interrupt: clear Timer and fill D-TX-FIFO if data");
-
- /* AMD interrupts off */
- AmdIrqOff(cs);
-
- 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)
- Amd7930_fill_Dfifo(cs);
- }
- /* AMD interrupts on */
- AmdIrqOn(cs);
- }
-
-
- /* D RX FIFO full or tiny packet in Fifo -> empty */
- if ((irflags & 2) || (dsr1 & 2)) {
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: interrupt: empty D-FIFO");
- Amd7930_empty_Dfifo(cs, 0);
- }
-
-
- /* D-Frame transmit complete */
- if (dsr1 & 64) {
- if (cs->debug & L1_DEB_ISAC) {
- debugl1(cs, "Amd7930: interrupt: transmit packet ready");
- }
- /* AMD interrupts off */
- AmdIrqOff(cs);
-
- 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->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: interrupt: TX-Packet ready, freeing skb");
- dev_kfree_skb_irq(cs->tx_skb);
- cs->tx_cnt = 0;
- cs->dc.amd7930.tx_xmtlen = 0;
- cs->tx_skb = NULL;
- }
- if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: interrupt: TX-Packet ready, next packet dequeued");
- cs->tx_cnt = 0;
- cs->dc.amd7930.tx_xmtlen = 0;
- Amd7930_fill_Dfifo(cs);
- }
- else
- schedule_event(cs, D_XMTBUFREADY);
- /* AMD interrupts on */
- AmdIrqOn(cs);
- }
-
- /* LIU status interrupt -> read LSR, check statechanges */
- if (lsr & 0x38) {
- /* AMD interrupts off */
- AmdIrqOff(cs);
-
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd: interrupt: LSR=0x%02X, LIU is in state %d", lsr, ((lsr & 0x7) + 2));
-
- cs->dc.amd7930.ph_state = (lsr & 0x7) + 2;
-
- schedule_event(cs, D_L1STATECHANGE);
- /* AMD interrupts on */
- AmdIrqOn(cs);
- }
-
- /* reads Interrupt-Register again. If there is a new interrupt-flag: restart handler */
- irflags = rByteAMD(cs, 0x00);
- }
-
-}
-
-static void
-Amd7930_l1hw(struct PStack *st, int pr, void *arg)
-{
- struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
- struct sk_buff *skb = arg;
- u_long flags;
-
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: l1hw called, pr: 0x%04X", pr);
-
- 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, "Amd7930: l1hw: PH_DATA Queued", 0);
-#endif
- } else {
- cs->tx_skb = skb;
- cs->tx_cnt = 0;
- cs->dc.amd7930.tx_xmtlen = 0;
-#ifdef L2FRAME_DEBUG /* psa */
- if (cs->debug & L1_DEB_LAPD)
- Logl2Frame(cs, skb, "Amd7930: l1hw: PH_DATA", 0);
-#endif
- Amd7930_fill_Dfifo(cs);
- }
- 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, "Amd7930: l1hw: 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;
- cs->dc.amd7930.tx_xmtlen = 0;
-#ifdef L2FRAME_DEBUG /* psa */
- if (cs->debug & L1_DEB_LAPD)
- Logl2Frame(cs, skb, "Amd7930: l1hw: PH_DATA_PULLED", 0);
-#endif
- Amd7930_fill_Dfifo(cs);
- spin_unlock_irqrestore(&cs->lock, flags);
- break;
- case (PH_PULL | REQUEST):
-#ifdef L2FRAME_DEBUG /* psa */
- if (cs->debug & L1_DEB_LAPD)
- debugl1(cs, "Amd7930: l1hw: -> PH_REQUEST_PULL, skb: %s", (cs->tx_skb) ? "yes" : "no");
-#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);
- if (cs->dc.amd7930.ph_state == 8) {
- /* b-channels off, PH-AR cleared
- * change to F3 */
- Amd7930_ph_command(cs, 0x20, "HW_RESET REQUEST"); //LMR1 bit 5
- spin_unlock_irqrestore(&cs->lock, flags);
- } else {
- Amd7930_ph_command(cs, 0x40, "HW_RESET REQUEST");
- cs->dc.amd7930.ph_state = 2;
- spin_unlock_irqrestore(&cs->lock, flags);
- Amd7930_new_ph(cs);
- }
- break;
- case (HW_ENABLE | REQUEST):
- cs->dc.amd7930.ph_state = 9;
- Amd7930_new_ph(cs);
- break;
- case (HW_INFO3 | REQUEST):
- // automatic
- break;
- case (HW_TESTLOOP | REQUEST):
- /* not implemented yet */
- break;
- case (HW_DEACTIVATE | RESPONSE):
- skb_queue_purge(&cs->rq);
- skb_queue_purge(&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))
- schedule_event(cs, D_CLEARBUSY);
- break;
- default:
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "Amd7930: l1hw: unknown %04x", pr);
- break;
- }
-}
-
-static void
-setstack_Amd7930(struct PStack *st, struct IsdnCardState *cs)
-{
-
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: setstack called");
-
- st->l1.l1hw = Amd7930_l1hw;
-}
-
-
-static void
-DC_Close_Amd7930(struct IsdnCardState *cs) {
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: DC_Close called");
-}
-
-
-static void
-dbusy_timer_handler(struct timer_list *t)
-{
- struct IsdnCardState *cs = from_timer(cs, t, dbusytimer);
- u_long flags;
- struct PStack *stptr;
- WORD dtcr, der;
- BYTE dsr1, dsr2;
-
-
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: dbusy_timer expired!");
-
- if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
- spin_lock_irqsave(&cs->lock, flags);
- /* D Transmit Byte Count Register:
- * Counts down packet's number of Bytes, 0 if packet ready */
- dtcr = rWordAMD(cs, 0x85);
- dsr1 = rByteAMD(cs, 0x02);
- dsr2 = rByteAMD(cs, 0x07);
- der = rWordAMD(cs, 0x03);
-
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: dbusy_timer_handler: DSR1=0x%02X, DSR2=0x%02X, DER=0x%04X, cs->tx_skb->len=%u, tx_stat=%u, dtcr=%u, cs->tx_cnt=%u", dsr1, dsr2, der, cs->tx_skb->len, cs->dc.amd7930.tx_xmtlen, dtcr, cs->tx_cnt);
-
- if ((cs->dc.amd7930.tx_xmtlen - dtcr) < cs->tx_cnt) { /* D-Channel Busy */
- test_and_set_bit(FLG_L1_DBUSY, &cs->HW_Flags);
- stptr = cs->stlist;
- spin_unlock_irqrestore(&cs->lock, flags);
- 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_any(cs->tx_skb);
- cs->tx_cnt = 0;
- cs->tx_skb = NULL;
- cs->dc.amd7930.tx_xmtlen = 0;
- } else {
- printk(KERN_WARNING "HiSax: Amd7930: D-Channel Busy no skb\n");
- debugl1(cs, "Amd7930: D-Channel Busy no skb");
-
- }
- /* Transmitter reset, abort transmit */
- wByteAMD(cs, 0x21, 0x82);
- wByteAMD(cs, 0x21, 0x02);
- spin_unlock_irqrestore(&cs->lock, flags);
- cs->irq_func(cs->irq, cs);
-
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: dbusy_timer_handler: Transmitter reset");
- }
- }
-}
-
-
-
-void Amd7930_init(struct IsdnCardState *cs)
-{
- WORD *ptr;
- BYTE cmd, cnt;
-
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "Amd7930: initamd called");
-
- cs->dc.amd7930.tx_xmtlen = 0;
- cs->dc.amd7930.old_state = 0;
- cs->dc.amd7930.lmr1 = 0x40;
- cs->dc.amd7930.ph_command = Amd7930_ph_command;
- cs->setstack_d = setstack_Amd7930;
- cs->DC_Close = DC_Close_Amd7930;
-
- /* AMD Initialisation */
- for (ptr = initAMD; *ptr != 0xFFFF; ) {
- cmd = LOBYTE(*ptr);
-
- /* read */
- if (*ptr++ >= 0x100) {
- if (cmd < 8)
- /* reset register */
- rByteAMD(cs, cmd);
- else {
- wByteAMD(cs, 0x00, cmd);
- for (cnt = *ptr++; cnt > 0; cnt--)
- rByteAMD(cs, 0x01);
- }
- }
- /* write */
- else if (cmd < 8)
- wByteAMD(cs, cmd, LOBYTE(*ptr++));
-
- else {
- wByteAMD(cs, 0x00, cmd);
- for (cnt = *ptr++; cnt > 0; cnt--)
- wByteAMD(cs, 0x01, LOBYTE(*ptr++));
- }
- }
-}
-
-void setup_Amd7930(struct IsdnCardState *cs)
-{
- INIT_WORK(&cs->tqueue, Amd7930_bh);
- timer_setup(&cs->dbusytimer, dbusy_timer_handler, 0);
-}