diff options
Diffstat (limited to 'drivers/isdn/hisax/hfc_2bds0.c')
| -rw-r--r-- | drivers/isdn/hisax/hfc_2bds0.c | 1078 |
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); -} |