/* $Id: w6692.c,v 1.18.2.4 2004/02/11 13:21:34 keil Exp $ * * Winbond W6692 specific routines * * Author Petr Novak * Copyright by Petr Novak * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * */ #include #include "hisax.h" #include "w6692.h" #include "isdnl1.h" #include #include #include /* table entry in the PCI devices list */ typedef struct { int vendor_id; int device_id; char *vendor_name; char *card_name; } PCI_ENTRY; static const PCI_ENTRY id_list[] = { {PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, "Winbond", "W6692"}, {PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH, "Dynalink/AsusCom", "IS64PH"}, {0, 0, "U.S.Robotics", "ISDN PCI Card TA"} }; #define W6692_SV_USR 0x16ec #define W6692_SD_USR 0x3409 #define W6692_WINBOND 0 #define W6692_DYNALINK 1 #define W6692_USR 2 static const char *w6692_revision = "$Revision: 1.18.2.4 $"; #define DBUSY_TIMER_VALUE 80 static char *W6692Ver[] = {"W6692 V00", "W6692 V01", "W6692 V10", "W6692 V11"}; static void W6692Version(struct IsdnCardState *cs, char *s) { int val; val = cs->readW6692(cs, W_D_RBCH); printk(KERN_INFO "%s Winbond W6692 version (%x): %s\n", s, val, W6692Ver[(val >> 6) & 3]); } static void ph_command(struct IsdnCardState *cs, unsigned int command) { if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ph_command %x", command); cs->writeisac(cs, W_CIX, command); } static void W6692_new_ph(struct IsdnCardState *cs) { switch (cs->dc.w6692.ph_state) { case (W_L1CMD_RST): ph_command(cs, W_L1CMD_DRC); l1_msg(cs, HW_RESET | INDICATION, NULL); /* fallthru */ case (W_L1IND_CD): l1_msg(cs, HW_DEACTIVATE | CONFIRM, NULL); break; case (W_L1IND_DRD): l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL); break; case (W_L1IND_CE): l1_msg(cs, HW_POWERUP | CONFIRM, NULL); break; case (W_L1IND_LD): l1_msg(cs, HW_RSYNC | INDICATION, NULL); break; case (W_L1IND_ARD): l1_msg(cs, HW_INFO2 | INDICATION, NULL); break; case (W_L1IND_AI8): l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL); break; case (W_L1IND_AI10): l1_msg(cs, HW_INFO4_P10 | INDICATION, NULL); break; default: break; } } static void W6692_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, "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)) W6692_new_ph(cs); 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); /* if (test_and_clear_bit(D_RX_MON1, &cs->event)) arcofi_fsm(cs, ARCOFI_RX_END, NULL); if (test_and_clear_bit(D_TX_MON1, &cs->event)) arcofi_fsm(cs, ARCOFI_TX_END, NULL); */ } static void W6692_empty_fifo(struct IsdnCardState *cs, int count) { u_char *ptr; if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO)) debugl1(cs, "W6692_empty_fifo"); if ((cs->rcvidx + count) >= MAX_DFRAME_LEN_L1) { if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692_empty_fifo overrun %d", cs->rcvidx + count); cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK); cs->rcvidx = 0; return; } ptr = cs->rcvbuf + cs->rcvidx; cs->rcvidx += count; cs->readW6692fifo(cs, ptr, count); cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK); if (cs->debug & L1_DEB_ISAC_FIFO) { char *t = cs->dlog; t += sprintf(t, "W6692_empty_fifo cnt %d", count); QuickHex(t, ptr, count); debugl1(cs, "%s", cs->dlog); } } static void W6692_fill_fifo(struct IsdnCardState *cs) { int count, more; u_char *ptr; if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO)) debugl1(cs, "W6692_fill_fifo"); if (!cs->tx_skb) return; count = cs->tx_skb->len; if (count <= 0) return; more = 0; if (count > W_D_FIFO_THRESH) { more = !0; count = W_D_FIFO_THRESH; } ptr = cs->tx_skb->data; skb_pull(cs->tx_skb, count); cs->tx_cnt += count; cs->writeW6692fifo(cs, ptr, count); cs->writeW6692(cs, W_D_CMDR, more ? W_D_CMDR_XMS : (W_D_CMDR_XMS | W_D_CMDR_XME)); if (test_and_set_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) { debugl1(cs, "W6692_fill_fifo dbusytimer running"); del_timer(&cs->dbusytimer); } init_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, "W6692_fill_fifo cnt %d", count); QuickHex(t, ptr, count); debugl1(cs, "%s", cs->dlog); } } static void W6692B_empty_fifo(struct BCState *bcs, int count) { u_char *ptr; struct IsdnCardState *cs = bcs->cs; if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO)) debugl1(cs, "W6692B_empty_fifo"); if (bcs->hw.w6692.rcvidx + count > HSCX_BUFMAX) { if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692B_empty_fifo: incoming packet too large"); cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); bcs->hw.w6692.rcvidx = 0; return; } ptr = bcs->hw.w6692.rcvbuf + bcs->hw.w6692.rcvidx; bcs->hw.w6692.rcvidx += count; READW6692BFIFO(cs, bcs->channel, ptr, count); cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); if (cs->debug & L1_DEB_HSCX_FIFO) { char *t = bcs->blog; t += sprintf(t, "W6692B_empty_fifo %c cnt %d", bcs->channel + '1', count); QuickHex(t, ptr, count); debugl1(cs, "%s", bcs->blog); } } static void W6692B_fill_fifo(struct BCState *bcs) { struct IsdnCardState *cs = bcs->cs; int more, count; u_char *ptr; if (!bcs->tx_skb) return; if (bcs->tx_skb->len <= 0) return; more = (bcs->mode == L1_MODE_TRANS) ? 1 : 0; if (bcs->tx_skb->len > W_B_FIFO_THRESH) { more = 1; count = W_B_FIFO_THRESH; } else count = bcs->tx_skb->len; if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO)) debugl1(cs, "W6692B_fill_fifo%s%d", (more ? " " : " last "), count); ptr = bcs->tx_skb->data; skb_pull(bcs->tx_skb, count); bcs->tx_cnt -= count; bcs->hw.w6692.count += count; WRITEW6692BFIFO(cs, bcs->channel, ptr, count); cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACT | W_B_CMDR_XMS | (more ? 0 : W_B_CMDR_XME)); if (cs->debug & L1_DEB_HSCX_FIFO) { char *t = bcs->blog; t += sprintf(t, "W6692B_fill_fifo %c cnt %d", bcs->channel + '1', count); QuickHex(t, ptr, count); debugl1(cs, "%s", bcs->blog); } } static void W6692B_interrupt(struct IsdnCardState *cs, u_char bchan) { u_char val; u_char r; struct BCState *bcs; struct sk_buff *skb; int count; bcs = (cs->bcs->channel == bchan) ? cs->bcs : (cs->bcs + 1); val = cs->BC_Read_Reg(cs, bchan, W_B_EXIR); debugl1(cs, "W6692B chan %d B_EXIR 0x%02X", bchan, val); if (!test_bit(BC_FLG_INIT, &bcs->Flag)) { debugl1(cs, "W6692B not INIT yet"); return; } if (val & W_B_EXI_RME) { /* RME */ r = cs->BC_Read_Reg(cs, bchan, W_B_STAR); if (r & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) { if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692 B STAR %x", r); if ((r & W_B_STAR_RDOV) && bcs->mode) if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692 B RDOV mode=%d", bcs->mode); if (r & W_B_STAR_CRCE) if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692 B CRC error"); cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RRST | W_B_CMDR_RACT); } else { count = cs->BC_Read_Reg(cs, bchan, W_B_RBCL) & (W_B_FIFO_THRESH - 1); if (count == 0) count = W_B_FIFO_THRESH; W6692B_empty_fifo(bcs, count); if ((count = bcs->hw.w6692.rcvidx) > 0) { if (cs->debug & L1_DEB_HSCX_FIFO) debugl1(cs, "W6692 Bchan Frame %d", count); if (!(skb = dev_alloc_skb(count))) printk(KERN_WARNING "W6692: Bchan receive out of memory\n"); else { memcpy(skb_put(skb, count), bcs->hw.w6692.rcvbuf, count); skb_queue_tail(&bcs->rqueue, skb); } } } bcs->hw.w6692.rcvidx = 0; schedule_event(bcs, B_RCVBUFREADY); } if (val & W_B_EXI_RMR) { /* RMR */ W6692B_empty_fifo(bcs, W_B_FIFO_THRESH); r = cs->BC_Read_Reg(cs, bchan, W_B_STAR); if (r & W_B_STAR_RDOV) { if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692 B RDOV(RMR) mode=%d", bcs->mode); cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RRST | W_B_CMDR_RACT); if (bcs->mode != L1_MODE_TRANS) bcs->hw.w6692.rcvidx = 0; } if (bcs->mode == L1_MODE_TRANS) { /* receive audio data */ if (!(skb = dev_alloc_skb(W_B_FIFO_THRESH))) printk(KERN_WARNING "HiSax: receive out of memory\n"); else { memcpy(skb_put(skb, W_B_FIFO_THRESH), bcs->hw.w6692.rcvbuf, W_B_FIFO_THRESH); skb_queue_tail(&bcs->rqueue, skb); } bcs->hw.w6692.rcvidx = 0; schedule_event(bcs, B_RCVBUFREADY); } } if (val & W_B_EXI_XDUN) { /* XDUN */ cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT); if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692 B EXIR %x Lost TX", val); if (bcs->mode == 1) W6692B_fill_fifo(bcs); else { /* Here we lost an TX interrupt, so * restart transmitting the whole frame. */ if (bcs->tx_skb) { skb_push(bcs->tx_skb, bcs->hw.w6692.count); bcs->tx_cnt += bcs->hw.w6692.count; bcs->hw.w6692.count = 0; } } return; } if (val & W_B_EXI_XFR) { /* XFR */ r = cs->BC_Read_Reg(cs, bchan, W_B_STAR); if (r & W_B_STAR_XDOW) { if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692 B STAR %x XDOW", r); cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT); if (bcs->tx_skb && (bcs->mode != 1)) { skb_push(bcs->tx_skb, bcs->hw.w6692.count); bcs->tx_cnt += bcs->hw.w6692.count; bcs->hw.w6692.count = 0; } } if (bcs->tx_skb) { if (bcs->tx_skb->len) { W6692B_fill_fifo(bcs); return; } else { 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->hw.w6692.count; spin_unlock_irqrestore(&bcs->aclock, flags); schedule_event(bcs, B_ACKPENDING); } dev_kfree_skb_irq(bcs->tx_skb); bcs->hw.w6692.count = 0; bcs->tx_skb = NULL; } } if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) { bcs->hw.w6692.count = 0; test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); W6692B_fill_fifo(bcs); } else { test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); schedule_event(bcs, B_XMTBUFREADY); } } } static irqreturn_t W6692_interrupt(int intno, void *dev_id) { struct IsdnCardState *cs = dev_id; u_char val, exval, v1; struct sk_buff *skb; u_int count; u_long flags; int icnt = 5; spin_lock_irqsave(&cs->lock, flags); val = cs->readW6692(cs, W_ISTA); if (!val) { spin_unlock_irqrestore(&cs->lock, flags); return IRQ_NONE; } StartW6692: if (cs->debug & L1_DEB_ISAC) debugl1(cs, "W6692 ISTA %x", val); if (val & W_INT_D_RME) { /* RME */ exval = cs->readW6692(cs, W_D_RSTA); if (exval & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) { if (exval & W_D_RSTA_RDOV) if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692 RDOV"); if (exval & W_D_RSTA_CRCE) if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692 D-channel CRC error"); if (exval & W_D_RSTA_RMB) if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692 D-channel ABORT"); cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST); } else { count = cs->readW6692(cs, W_D_RBCL) & (W_D_FIFO_THRESH - 1); if (count == 0) count = W_D_FIFO_THRESH; W6692_empty_fifo(cs, count); if ((count = cs->rcvidx) > 0) { cs->rcvidx = 0; if (!(skb = alloc_skb(count, GFP_ATOMIC))) printk(KERN_WARNING "HiSax: D receive out of memory\n"); else { memcpy(skb_put(skb, count), cs->rcvbuf, count); skb_queue_tail(&cs->rq, skb); } } } cs->rcvidx = 0; schedule_event(cs, D_RCVBUFREADY); } if (val & W_INT_D_RMR) { /* RMR */ W6692_empty_fifo(cs, W_D_FIFO_THRESH); } if (val & W_INT_D_XFR) { /* XFR */ 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) { W6692_fill_fifo(cs); goto afterXFR; } 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; W6692_fill_fifo(cs); } else schedule_event(cs, D_XMTBUFREADY); } afterXFR: if (val & (W_INT_XINT0 | W_INT_XINT1)) { /* XINT0/1 - never */ if (cs->debug & L1_DEB_ISAC) debugl1(cs, "W6692 spurious XINT!"); } if (val & W_INT_D_EXI) { /* EXI */ exval = cs->readW6692(cs, W_D_EXIR); if (cs->debug & L1_DEB_WARN) debugl1(cs, "W6692 D_EXIR %02x", exval); if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) { /* Transmit underrun/collision */ debugl1(cs, "W6692 D-chan underrun/collision"); printk(KERN_WARNING "HiSax: W6692 XDUN/XCOL\n"); 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) { /* Restart frame */ skb_push(cs->tx_skb, cs->tx_cnt); cs->tx_cnt = 0; W6692_fill_fifo(cs); } else { printk(KERN_WARNING "HiSax: W6692 XDUN/XCOL no skb\n"); debugl1(cs, "W6692 XDUN/XCOL no skb"); cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_XRST); } } if (exval & W_D_EXI_RDOV) { /* RDOV */ debugl1(cs, "W6692 D-channel RDOV"); printk(KERN_WARNING "HiSax: W6692 D-RDOV\n"); cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RRST); } if (exval & W_D_EXI_TIN2) { /* TIN2 - never */ debugl1(cs, "W6692 spurious TIN2 interrupt"); } if (exval & W_D_EXI_MOC) { /* MOC - not supported */ debugl1(cs, "W6692 spurious MOC interrupt"); v1 = cs->readW6692(cs, W_MOSR); debugl1(cs, "W6692 MOSR %02x", v1); } if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */ v1 = cs->readW6692(cs, W_CIR); if (cs->debug & L1_DEB_ISAC) debugl1(cs, "W6692 ISC CIR=0x%02X", v1); if (v1 & W_CIR_ICC) { cs->dc.w6692.ph_state = v1 & W_CIR_COD_MASK; if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ph_state_change %x", cs->dc.w6692.ph_state); schedule_event(cs, D_L1STATECHANGE); } if (v1 & W_CIR_SCC) { v1 = cs->readW6692(cs, W_SQR); debugl1(cs, "W6692 SCC SQR=0x%02X", v1); } } if (exval & W_D_EXI_WEXP) { debugl1(cs, "W6692 spurious WEXP interrupt!"); } if (exval & W_D_EXI_TEXP) { debugl1(cs, "W6692 spurious TEXP interrupt!"); } } if (val & W_INT_B1_EXI) { debugl1(cs, "W6692 B channel 1 interrupt"); W6692B_interrupt(cs, 0); } if (val & W_INT_B2_EXI) { debugl1(cs, "W6692 B channel 2 interrupt"); W6692B_interrupt(cs, 1); } val = cs->readW6692(cs, W_ISTA); if (val && icnt) { icnt--; goto StartW6692; } if (!icnt) { printk(KERN_WARNING "W6692 IRQ LOOP\n"); cs->writeW6692(cs, W_IMASK, 0xff); } spin_unlock_irqrestore(&cs->lock, flags); return IRQ_HANDLED; } static void W6692_l1hw(struct PStack *st, int pr, void *arg) { struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware; struct sk_buff *skb = arg; u_long flags; int val; 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 W6692_fill_fifo(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, " 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 W6692_fill_fifo(cs); 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); if ((cs->dc.w6692.ph_state == W_L1IND_DRD)) { ph_command(cs, W_L1CMD_ECK); spin_unlock_irqrestore(&cs->lock, flags); } else { ph_command(cs, W_L1CMD_RST); cs->dc.w6692.ph_state = W_L1CMD_RST; spin_unlock_irqrestore(&cs->lock, flags); W6692_new_ph(cs); } break; case (HW_ENABLE | REQUEST): spin_lock_irqsave(&cs->lock, flags); ph_command(cs, W_L1CMD_ECK); spin_unlock_irqrestore(&cs->lock, flags); break; case (HW_INFO3 | REQUEST): spin_lock_irqsave(&cs->lock, flags); ph_command(cs, W_L1CMD_AR8); spin_unlock_irqrestore(&cs->lock, flags); break; case (HW_TESTLOOP | REQUEST): val = 0; if (1 & (long) arg) val |= 0x0c; if (2 & (long) arg) val |= 0x3; /* !!! 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_any(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, "W6692_l1hw unknown %04x", pr); break; } } static void setstack_W6692(struct PStack *st, struct IsdnCardState *cs) { st->l1.l1hw = W6692_l1hw; } static void DC_Close_W6692(struct IsdnCardState *cs) { } static void dbusy_timer_handler(struct IsdnCardState *cs) { struct PStack *stptr; int rbch, star; u_long flags; spin_lock_irqsave(&cs->lock, flags); if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) { rbch = cs->readW6692(cs, W_D_RBCH); star = cs->readW6692(cs, W_D_STAR); if (cs->debug) debugl1(cs, "D-Channel Busy D_RBCH %02x D_STAR %02x", rbch, star); if (star & W_D_STAR_XBZ) { /* D-Channel Busy */ test_and_set_bit(FLG_L1_DBUSY, &cs->HW_Flags); stptr = cs->stlist; 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; } else { printk(KERN_WARNING "HiSax: W6692 D-Channel Busy no skb\n"); debugl1(cs, "D-Channel Busy no skb"); } cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_XRST); /* Transmitter reset */ spin_unlock_irqrestore(&cs->lock, flags); cs->irq_func(cs->irq, cs); return; } } spin_unlock_irqrestore(&cs->lock, flags); } static void W6692Bmode(struct BCState *bcs, int mode, int bchan) { struct IsdnCardState *cs = bcs->cs; if (cs->debug & L1_DEB_HSCX) debugl1(cs, "w6692 %c mode %d ichan %d", '1' + bchan, mode, bchan); bcs->mode = mode; bcs->channel = bchan; bcs->hw.w6692.bchan = bchan; switch (mode) { case (L1_MODE_NULL): cs->BC_Write_Reg(cs, bchan, W_B_MODE, 0); break; case (L1_MODE_TRANS): cs->BC_Write_Reg(cs, bchan, W_B_MODE, W_B_MODE_MMS); break; case (L1_MODE_HDLC): cs->BC_Write_Reg(cs, bchan, W_B_MODE, W_B_MODE_ITF); cs->BC_Write_Reg(cs, bchan, W_B_ADM1, 0xff); cs->BC_Write_Reg(cs, bchan, W_B_ADM2, 0xff); break; } if (mode) cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | W_B_CMDR_XRST); cs->BC_Write_Reg(cs, bchan, W_B_EXIM, 0x00); } static void W6692_l2l1(struct PStack *st, int pr, void *arg) { struct sk_buff *skb = arg; struct BCState *bcs = st->l1.bcs; 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->hw.w6692.count = 0; bcs->cs->BC_Send_Data(bcs); } spin_unlock_irqrestore(&bcs->cs->lock, flags); break; case (PH_PULL | INDICATION): if (bcs->tx_skb) { printk(KERN_WARNING "W6692_l2l1: this shouldn't happen\n"); break; } spin_lock_irqsave(&bcs->cs->lock, flags); test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); bcs->tx_skb = skb; bcs->hw.w6692.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); W6692Bmode(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); W6692Bmode(bcs, 0, st->l1.bc); spin_unlock_irqrestore(&bcs->cs->lock, flags); st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL); break; } } static void close_w6692state(struct BCState *bcs) { W6692Bmode(bcs, 0, bcs->channel); if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) { kfree(bcs->hw.w6692.rcvbuf); bcs->hw.w6692.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); } } } static int open_w6692state(struct IsdnCardState *cs, struct BCState *bcs) { if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) { if (!(bcs->hw.w6692.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) { printk(KERN_WARNING "HiSax: No memory for w6692.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.w6692.rcvbuf); bcs->hw.w6692.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.w6692.rcvidx = 0; bcs->tx_cnt = 0; return (0); } static int setstack_w6692(struct PStack *st, struct BCState *bcs) { bcs->channel = st->l1.bc; if (open_w6692state(st->l1.hardware, bcs)) return (-1); st->l1.bcs = bcs; st->l2.l2l1 = W6692_l2l1; setstack_manager(st); bcs->st = st; setstack_l1_B(st); return (0); } static void resetW6692(struct IsdnCardState *cs) { cs->writeW6692(cs, W_D_CTL, W_D_CTL_SRST); mdelay(10); cs->writeW6692(cs, W_D_CTL, 0x00); mdelay(10); cs->writeW6692(cs, W_IMASK, 0xff); cs->writeW6692(cs, W_D_SAM, 0xff); cs->writeW6692(cs, W_D_TAM, 0xff); cs->writeW6692(cs, W_D_EXIM, 0x00); cs->writeW6692(cs, W_D_MODE, W_D_MODE_RACT); cs->writeW6692(cs, W_IMASK, 0x18); if (cs->subtyp == W6692_USR) { /* seems that USR implemented some power control features * Pin 79 is connected to the oscilator circuit so we * have to handle it here */ cs->writeW6692(cs, W_PCTL, 0x80); cs->writeW6692(cs, W_XDATA, 0x00); } } static void initW6692(struct IsdnCardState *cs, int part) { if (part & 1) { cs->setstack_d = setstack_W6692; cs->DC_Close = DC_Close_W6692; cs->dbusytimer.function = (void *) dbusy_timer_handler; cs->dbusytimer.data = (long) cs; init_timer(&cs->dbusytimer); resetW6692(cs); ph_command(cs, W_L1CMD_RST); cs->dc.w6692.ph_state = W_L1CMD_RST; W6692_new_ph(cs); ph_command(cs, W_L1CMD_ECK); cs->bcs[0].BC_SetStack = setstack_w6692; cs->bcs[1].BC_SetStack = setstack_w6692; cs->bcs[0].BC_Close = close_w6692state; cs->bcs[1].BC_Close = close_w6692state; W6692Bmode(cs->bcs, 0, 0); W6692Bmode(cs->bcs + 1, 0, 0); } if (part & 2) { /* Reenable all IRQ */ cs->writeW6692(cs, W_IMASK, 0x18); cs->writeW6692(cs, W_D_EXIM, 0x00); cs->BC_Write_Reg(cs, 0, W_B_EXIM, 0x00); cs->BC_Write_Reg(cs, 1, W_B_EXIM, 0x00); /* Reset D-chan receiver and transmitter */ cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST); } } /* Interface functions */ static u_char ReadW6692(struct IsdnCardState *cs, u_char offset) { return (inb(cs->hw.w6692.iobase + offset)); } static void WriteW6692(struct IsdnCardState *cs, u_char offset, u_char value) { outb(value, cs->hw.w6692.iobase + offset); } static void ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size) { insb(cs->hw.w6692.iobase + W_D_RFIFO, data, size); } static void WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size) { outsb(cs->hw.w6692.iobase + W_D_XFIFO, data, size); } static u_char ReadW6692B(struct IsdnCardState *cs, int bchan, u_char offset) { return (inb(cs->hw.w6692.iobase + (bchan ? 0x40 : 0) + offset)); } static void WriteW6692B(struct IsdnCardState *cs, int bchan, u_char offset, u_char value) { outb(value, cs->hw.w6692.iobase + (bchan ? 0x40 : 0) + offset); } static int w6692_card_msg(struct IsdnCardState *cs, int mt, void *arg) { switch (mt) { case CARD_RESET: resetW6692(cs); return (0); case CARD_RELEASE: cs->writeW6692(cs, W_IMASK, 0xff); release_region(cs->hw.w6692.iobase, 256); if (cs->subtyp == W6692_USR) { cs->writeW6692(cs, W_XDATA, 0x04); } return (0); case CARD_INIT: initW6692(cs, 3); return (0); case CARD_TEST: return (0); } return (0); } static int id_idx; static struct pci_dev *dev_w6692 = NULL; int setup_w6692(struct IsdnCard *card) { struct IsdnCardState *cs = card->cs; char tmp[64]; u_char found = 0; u_char pci_irq = 0; u_int pci_ioaddr = 0; strcpy(tmp, w6692_revision); printk(KERN_INFO "HiSax: W6692 driver Rev. %s\n", HiSax_getrev(tmp)); if (cs->typ != ISDN_CTYPE_W6692) return (0); while (id_list[id_idx].vendor_id) { dev_w6692 = hisax_find_pci_device(id_list[id_idx].vendor_id, id_list[id_idx].device_id, dev_w6692); if (dev_w6692) { if (pci_enable_device(dev_w6692)) continue; cs->subtyp = id_idx; break; } id_idx++; } if (dev_w6692) { found = 1; pci_irq = dev_w6692->irq; /* I think address 0 is allways the configuration area */ /* and address 1 is the real IO space KKe 03.09.99 */ pci_ioaddr = pci_resource_start(dev_w6692, 1); /* USR ISDN PCI card TA need some special handling */ if (cs->subtyp == W6692_WINBOND) { if ((W6692_SV_USR == dev_w6692->subsystem_vendor) && (W6692_SD_USR == dev_w6692->subsystem_device)) { cs->subtyp = W6692_USR; } } } if (!found) { printk(KERN_WARNING "W6692: No PCI card found\n"); return (0); } cs->irq = pci_irq; if (!cs->irq) { printk(KERN_WARNING "W6692: No IRQ for PCI card found\n"); return (0); } if (!pci_ioaddr) { printk(KERN_WARNING "W6692: NO I/O Base Address found\n"); return (0); } cs->hw.w6692.iobase = pci_ioaddr; printk(KERN_INFO "Found: %s %s, I/O base: 0x%x, irq: %d\n", id_list[cs->subtyp].vendor_name, id_list[cs->subtyp].card_name, pci_ioaddr, pci_irq); if (!request_region(cs->hw.w6692.iobase, 256, id_list[cs->subtyp].card_name)) { printk(KERN_WARNING "HiSax: %s I/O ports %x-%x already in use\n", id_list[cs->subtyp].card_name, cs->hw.w6692.iobase, cs->hw.w6692.iobase + 255); return (0); } printk(KERN_INFO "HiSax: %s config irq:%d I/O:%x\n", id_list[cs->subtyp].card_name, cs->irq, cs->hw.w6692.iobase); INIT_WORK(&cs->tqueue, W6692_bh); cs->readW6692 = &ReadW6692; cs->writeW6692 = &WriteW6692; cs->readisacfifo = &ReadISACfifo; cs->writeisacfifo = &WriteISACfifo; cs->BC_Read_Reg = &ReadW6692B; cs->BC_Write_Reg = &WriteW6692B; cs->BC_Send_Data = &W6692B_fill_fifo; cs->cardmsg = &w6692_card_msg; cs->irq_func = &W6692_interrupt; cs->irq_flags |= IRQF_SHARED; W6692Version(cs, "W6692:"); printk(KERN_INFO "W6692 ISTA=0x%X\n", ReadW6692(cs, W_ISTA)); printk(KERN_INFO "W6692 IMASK=0x%X\n", ReadW6692(cs, W_IMASK)); printk(KERN_INFO "W6692 D_EXIR=0x%X\n", ReadW6692(cs, W_D_EXIR)); printk(KERN_INFO "W6692 D_EXIM=0x%X\n", ReadW6692(cs, W_D_EXIM)); printk(KERN_INFO "W6692 D_RSTA=0x%X\n", ReadW6692(cs, W_D_RSTA)); return (1); }