/* $Id: netjet.c,v 1.29.2.4 2004/02/11 13:21:34 keil Exp $ * * low level stuff for Traverse Technologie NETJet ISDN cards * * 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. * * Thanks to Traverse Technologies Australia for documents and information * * 16-Apr-2002 - led code added - Guy Ellis (guy@traverse.com.au) * */ #include <linux/init.h> #include "hisax.h" #include "isac.h" #include "hscx.h" #include "isdnl1.h" #include <linux/interrupt.h> #include <linux/ppp_defs.h> #include <linux/slab.h> #include <asm/io.h> #include "netjet.h" /* Interface functions */ u_char NETjet_ReadIC(struct IsdnCardState *cs, u_char offset) { u_char ret; cs->hw.njet.auxd &= 0xfc; cs->hw.njet.auxd |= (offset >> 4) & 3; byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); ret = bytein(cs->hw.njet.isac + ((offset & 0xf) << 2)); return (ret); } void NETjet_WriteIC(struct IsdnCardState *cs, u_char offset, u_char value) { cs->hw.njet.auxd &= 0xfc; cs->hw.njet.auxd |= (offset >> 4) & 3; byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); byteout(cs->hw.njet.isac + ((offset & 0xf) << 2), value); } void NETjet_ReadICfifo(struct IsdnCardState *cs, u_char *data, int size) { cs->hw.njet.auxd &= 0xfc; byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); insb(cs->hw.njet.isac, data, size); } void NETjet_WriteICfifo(struct IsdnCardState *cs, u_char *data, int size) { cs->hw.njet.auxd &= 0xfc; byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); outsb(cs->hw.njet.isac, data, size); } static void fill_mem(struct BCState *bcs, u_int *pos, u_int cnt, int chan, u_char fill) { u_int mask = 0x000000ff, val = 0, *p = pos; u_int i; val |= fill; if (chan) { val <<= 8; mask <<= 8; } mask ^= 0xffffffff; for (i = 0; i < cnt; i++) { *p &= mask; *p++ |= val; if (p > bcs->hw.tiger.s_end) p = bcs->hw.tiger.send; } } static void mode_tiger(struct BCState *bcs, int mode, int bc) { struct IsdnCardState *cs = bcs->cs; u_char led; if (cs->debug & L1_DEB_HSCX) debugl1(cs, "Tiger mode %d bchan %d/%d", mode, bc, bcs->channel); bcs->mode = mode; bcs->channel = bc; switch (mode) { case (L1_MODE_NULL): fill_mem(bcs, bcs->hw.tiger.send, NETJET_DMA_TXSIZE, bc, 0xff); if (cs->debug & L1_DEB_HSCX) debugl1(cs, "Tiger stat rec %d/%d send %d", bcs->hw.tiger.r_tot, bcs->hw.tiger.r_err, bcs->hw.tiger.s_tot); if ((cs->bcs[0].mode == L1_MODE_NULL) && (cs->bcs[1].mode == L1_MODE_NULL)) { cs->hw.njet.dmactrl = 0; byteout(cs->hw.njet.base + NETJET_DMACTRL, cs->hw.njet.dmactrl); byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0); } if (cs->typ == ISDN_CTYPE_NETJET_S) { // led off led = bc & 0x01; led = 0x01 << (6 + led); // convert to mask led = ~led; cs->hw.njet.auxd &= led; byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); } break; case (L1_MODE_TRANS): break; case (L1_MODE_HDLC_56K): case (L1_MODE_HDLC): fill_mem(bcs, bcs->hw.tiger.send, NETJET_DMA_TXSIZE, bc, 0xff); bcs->hw.tiger.r_state = HDLC_ZERO_SEARCH; bcs->hw.tiger.r_tot = 0; bcs->hw.tiger.r_bitcnt = 0; bcs->hw.tiger.r_one = 0; bcs->hw.tiger.r_err = 0; bcs->hw.tiger.s_tot = 0; if (!cs->hw.njet.dmactrl) { fill_mem(bcs, bcs->hw.tiger.send, NETJET_DMA_TXSIZE, !bc, 0xff); cs->hw.njet.dmactrl = 1; byteout(cs->hw.njet.base + NETJET_DMACTRL, cs->hw.njet.dmactrl); byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0x0f); /* was 0x3f now 0x0f for TJ300 and TJ320 GE 13/07/00 */ } bcs->hw.tiger.sendp = bcs->hw.tiger.send; bcs->hw.tiger.free = NETJET_DMA_TXSIZE; test_and_set_bit(BC_FLG_EMPTY, &bcs->Flag); if (cs->typ == ISDN_CTYPE_NETJET_S) { // led on led = bc & 0x01; led = 0x01 << (6 + led); // convert to mask cs->hw.njet.auxd |= led; byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); } break; } if (cs->debug & L1_DEB_HSCX) debugl1(cs, "tiger: set %x %x %x %x/%x pulse=%d", bytein(cs->hw.njet.base + NETJET_DMACTRL), bytein(cs->hw.njet.base + NETJET_IRQMASK0), bytein(cs->hw.njet.base + NETJET_IRQSTAT0), inl(cs->hw.njet.base + NETJET_DMA_READ_ADR), inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR), bytein(cs->hw.njet.base + NETJET_PULSE_CNT)); } static void printframe(struct IsdnCardState *cs, u_char *buf, int count, char *s) { char tmp[128]; char *t = tmp; int i = count, j; u_char *p = buf; t += sprintf(t, "tiger %s(%4d)", s, count); while (i > 0) { if (i > 16) j = 16; else j = i; QuickHex(t, p, j); debugl1(cs, "%s", tmp); p += j; i -= j; t = tmp; t += sprintf(t, "tiger %s ", s); } } // macro for 64k #define MAKE_RAW_BYTE for (j = 0; j < 8; j++) { \ bitcnt++; \ s_val >>= 1; \ if (val & 1) { \ s_one++; \ s_val |= 0x80; \ } else { \ s_one = 0; \ s_val &= 0x7f; \ } \ if (bitcnt == 8) { \ bcs->hw.tiger.sendbuf[s_cnt++] = s_val; \ bitcnt = 0; \ } \ if (s_one == 5) { \ s_val >>= 1; \ s_val &= 0x7f; \ bitcnt++; \ s_one = 0; \ } \ if (bitcnt == 8) { \ bcs->hw.tiger.sendbuf[s_cnt++] = s_val; \ bitcnt = 0; \ } \ val >>= 1; \ } static int make_raw_data(struct BCState *bcs) { // this make_raw is for 64k register u_int i, s_cnt = 0; register u_char j; register u_char val; register u_char s_one = 0; register u_char s_val = 0; register u_char bitcnt = 0; u_int fcs; if (!bcs->tx_skb) { debugl1(bcs->cs, "tiger make_raw: NULL skb"); return (1); } bcs->hw.tiger.sendbuf[s_cnt++] = HDLC_FLAG_VALUE; fcs = PPP_INITFCS; for (i = 0; i < bcs->tx_skb->len; i++) { val = bcs->tx_skb->data[i]; fcs = PPP_FCS(fcs, val); MAKE_RAW_BYTE; } fcs ^= 0xffff; val = fcs & 0xff; MAKE_RAW_BYTE; val = (fcs >> 8) & 0xff; MAKE_RAW_BYTE; val = HDLC_FLAG_VALUE; for (j = 0; j < 8; j++) { bitcnt++; s_val >>= 1; if (val & 1) s_val |= 0x80; else s_val &= 0x7f; if (bitcnt == 8) { bcs->hw.tiger.sendbuf[s_cnt++] = s_val; bitcnt = 0; } val >>= 1; } if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger make_raw: in %u out %d.%d", bcs->tx_skb->len, s_cnt, bitcnt); if (bitcnt) { while (8 > bitcnt++) { s_val >>= 1; s_val |= 0x80; } bcs->hw.tiger.sendbuf[s_cnt++] = s_val; bcs->hw.tiger.sendbuf[s_cnt++] = 0xff; // NJ<->NJ thoughput bug fix } bcs->hw.tiger.sendcnt = s_cnt; bcs->tx_cnt -= bcs->tx_skb->len; bcs->hw.tiger.sp = bcs->hw.tiger.sendbuf; return (0); } // macro for 56k #define MAKE_RAW_BYTE_56K for (j = 0; j < 8; j++) { \ bitcnt++; \ s_val >>= 1; \ if (val & 1) { \ s_one++; \ s_val |= 0x80; \ } else { \ s_one = 0; \ s_val &= 0x7f; \ } \ if (bitcnt == 7) { \ s_val >>= 1; \ s_val |= 0x80; \ bcs->hw.tiger.sendbuf[s_cnt++] = s_val; \ bitcnt = 0; \ } \ if (s_one == 5) { \ s_val >>= 1; \ s_val &= 0x7f; \ bitcnt++; \ s_one = 0; \ } \ if (bitcnt == 7) { \ s_val >>= 1; \ s_val |= 0x80; \ bcs->hw.tiger.sendbuf[s_cnt++] = s_val; \ bitcnt = 0; \ } \ val >>= 1; \ } static int make_raw_data_56k(struct BCState *bcs) { // this make_raw is for 56k register u_int i, s_cnt = 0; register u_char j; register u_char val; register u_char s_one = 0; register u_char s_val = 0; register u_char bitcnt = 0; u_int fcs; if (!bcs->tx_skb) { debugl1(bcs->cs, "tiger make_raw_56k: NULL skb"); return (1); } val = HDLC_FLAG_VALUE; for (j = 0; j < 8; j++) { bitcnt++; s_val >>= 1; if (val & 1) s_val |= 0x80; else s_val &= 0x7f; if (bitcnt == 7) { s_val >>= 1; s_val |= 0x80; bcs->hw.tiger.sendbuf[s_cnt++] = s_val; bitcnt = 0; } val >>= 1; }; fcs = PPP_INITFCS; for (i = 0; i < bcs->tx_skb->len; i++) { val = bcs->tx_skb->data[i]; fcs = PPP_FCS(fcs, val); MAKE_RAW_BYTE_56K; } fcs ^= 0xffff; val = fcs & 0xff; MAKE_RAW_BYTE_56K; val = (fcs >> 8) & 0xff; MAKE_RAW_BYTE_56K; val = HDLC_FLAG_VALUE; for (j = 0; j < 8; j++) { bitcnt++; s_val >>= 1; if (val & 1) s_val |= 0x80; else s_val &= 0x7f; if (bitcnt == 7) { s_val >>= 1; s_val |= 0x80; bcs->hw.tiger.sendbuf[s_cnt++] = s_val; bitcnt = 0; } val >>= 1; } if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger make_raw_56k: in %u out %d.%d", bcs->tx_skb->len, s_cnt, bitcnt); if (bitcnt) { while (8 > bitcnt++) { s_val >>= 1; s_val |= 0x80; } bcs->hw.tiger.sendbuf[s_cnt++] = s_val; bcs->hw.tiger.sendbuf[s_cnt++] = 0xff; // NJ<->NJ thoughput bug fix } bcs->hw.tiger.sendcnt = s_cnt; bcs->tx_cnt -= bcs->tx_skb->len; bcs->hw.tiger.sp = bcs->hw.tiger.sendbuf; return (0); } static void got_frame(struct BCState *bcs, int count) { struct sk_buff *skb; if (!(skb = dev_alloc_skb(count))) printk(KERN_WARNING "TIGER: receive out of memory\n"); else { memcpy(skb_put(skb, count), bcs->hw.tiger.rcvbuf, count); skb_queue_tail(&bcs->rqueue, skb); } test_and_set_bit(B_RCVBUFREADY, &bcs->event); schedule_work(&bcs->tqueue); if (bcs->cs->debug & L1_DEB_RECEIVE_FRAME) printframe(bcs->cs, bcs->hw.tiger.rcvbuf, count, "rec"); } static void read_raw(struct BCState *bcs, u_int *buf, int cnt) { int i; register u_char j; register u_char val; u_int *pend = bcs->hw.tiger.rec + NETJET_DMA_RXSIZE - 1; register u_char state = bcs->hw.tiger.r_state; register u_char r_one = bcs->hw.tiger.r_one; register u_char r_val = bcs->hw.tiger.r_val; register u_int bitcnt = bcs->hw.tiger.r_bitcnt; u_int *p = buf; int bits; u_char mask; if (bcs->mode == L1_MODE_HDLC) { // it's 64k mask = 0xff; bits = 8; } else { // it's 56K mask = 0x7f; bits = 7; }; for (i = 0; i < cnt; i++) { val = bcs->channel ? ((*p >> 8) & 0xff) : (*p & 0xff); p++; if (p > pend) p = bcs->hw.tiger.rec; if ((val & mask) == mask) { state = HDLC_ZERO_SEARCH; bcs->hw.tiger.r_tot++; bitcnt = 0; r_one = 0; continue; } for (j = 0; j < bits; j++) { if (state == HDLC_ZERO_SEARCH) { if (val & 1) { r_one++; } else { r_one = 0; state = HDLC_FLAG_SEARCH; if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger read_raw: zBit(%d,%d,%d) %x", bcs->hw.tiger.r_tot, i, j, val); } } else if (state == HDLC_FLAG_SEARCH) { if (val & 1) { r_one++; if (r_one > 6) { state = HDLC_ZERO_SEARCH; } } else { if (r_one == 6) { bitcnt = 0; r_val = 0; state = HDLC_FLAG_FOUND; if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger read_raw: flag(%d,%d,%d) %x", bcs->hw.tiger.r_tot, i, j, val); } r_one = 0; } } else if (state == HDLC_FLAG_FOUND) { if (val & 1) { r_one++; if (r_one > 6) { state = HDLC_ZERO_SEARCH; } else { r_val >>= 1; r_val |= 0x80; bitcnt++; } } else { if (r_one == 6) { bitcnt = 0; r_val = 0; r_one = 0; val >>= 1; continue; } else if (r_one != 5) { r_val >>= 1; r_val &= 0x7f; bitcnt++; } r_one = 0; } if ((state != HDLC_ZERO_SEARCH) && !(bitcnt & 7)) { state = HDLC_FRAME_FOUND; bcs->hw.tiger.r_fcs = PPP_INITFCS; bcs->hw.tiger.rcvbuf[0] = r_val; bcs->hw.tiger.r_fcs = PPP_FCS(bcs->hw.tiger.r_fcs, r_val); if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger read_raw: byte1(%d,%d,%d) rval %x val %x i %x", bcs->hw.tiger.r_tot, i, j, r_val, val, bcs->cs->hw.njet.irqstat0); } } else if (state == HDLC_FRAME_FOUND) { if (val & 1) { r_one++; if (r_one > 6) { state = HDLC_ZERO_SEARCH; bitcnt = 0; } else { r_val >>= 1; r_val |= 0x80; bitcnt++; } } else { if (r_one == 6) { r_val = 0; r_one = 0; bitcnt++; if (bitcnt & 7) { debugl1(bcs->cs, "tiger: frame not byte aligned"); state = HDLC_FLAG_SEARCH; bcs->hw.tiger.r_err++; #ifdef ERROR_STATISTIC bcs->err_inv++; #endif } else { if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger frame end(%d,%d): fcs(%x) i %x", i, j, bcs->hw.tiger.r_fcs, bcs->cs->hw.njet.irqstat0); if (bcs->hw.tiger.r_fcs == PPP_GOODFCS) { got_frame(bcs, (bitcnt >> 3) - 3); } else { if (bcs->cs->debug) { debugl1(bcs->cs, "tiger FCS error"); printframe(bcs->cs, bcs->hw.tiger.rcvbuf, (bitcnt >> 3) - 1, "rec"); bcs->hw.tiger.r_err++; } #ifdef ERROR_STATISTIC bcs->err_crc++; #endif } state = HDLC_FLAG_FOUND; } bitcnt = 0; } else if (r_one == 5) { val >>= 1; r_one = 0; continue; } else { r_val >>= 1; r_val &= 0x7f; bitcnt++; } r_one = 0; } if ((state == HDLC_FRAME_FOUND) && !(bitcnt & 7)) { if ((bitcnt >> 3) >= HSCX_BUFMAX) { debugl1(bcs->cs, "tiger: frame too big"); r_val = 0; state = HDLC_FLAG_SEARCH; bcs->hw.tiger.r_err++; #ifdef ERROR_STATISTIC bcs->err_inv++; #endif } else { bcs->hw.tiger.rcvbuf[(bitcnt >> 3) - 1] = r_val; bcs->hw.tiger.r_fcs = PPP_FCS(bcs->hw.tiger.r_fcs, r_val); } } } val >>= 1; } bcs->hw.tiger.r_tot++; } bcs->hw.tiger.r_state = state; bcs->hw.tiger.r_one = r_one; bcs->hw.tiger.r_val = r_val; bcs->hw.tiger.r_bitcnt = bitcnt; } void read_tiger(struct IsdnCardState *cs) { u_int *p; int cnt = NETJET_DMA_RXSIZE / 2; if ((cs->hw.njet.irqstat0 & cs->hw.njet.last_is0) & NETJET_IRQM0_READ) { debugl1(cs, "tiger warn read double dma %x/%x", cs->hw.njet.irqstat0, cs->hw.njet.last_is0); #ifdef ERROR_STATISTIC if (cs->bcs[0].mode) cs->bcs[0].err_rdo++; if (cs->bcs[1].mode) cs->bcs[1].err_rdo++; #endif return; } else { cs->hw.njet.last_is0 &= ~NETJET_IRQM0_READ; cs->hw.njet.last_is0 |= (cs->hw.njet.irqstat0 & NETJET_IRQM0_READ); } if (cs->hw.njet.irqstat0 & NETJET_IRQM0_READ_1) p = cs->bcs[0].hw.tiger.rec + NETJET_DMA_RXSIZE - 1; else p = cs->bcs[0].hw.tiger.rec + cnt - 1; if ((cs->bcs[0].mode == L1_MODE_HDLC) || (cs->bcs[0].mode == L1_MODE_HDLC_56K)) read_raw(cs->bcs, p, cnt); if ((cs->bcs[1].mode == L1_MODE_HDLC) || (cs->bcs[1].mode == L1_MODE_HDLC_56K)) read_raw(cs->bcs + 1, p, cnt); cs->hw.njet.irqstat0 &= ~NETJET_IRQM0_READ; } static void write_raw(struct BCState *bcs, u_int *buf, int cnt); void netjet_fill_dma(struct BCState *bcs) { register u_int *p, *sp; register int cnt; if (!bcs->tx_skb) return; if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger fill_dma1: c%d %4lx", bcs->channel, bcs->Flag); if (test_and_set_bit(BC_FLG_BUSY, &bcs->Flag)) return; if (bcs->mode == L1_MODE_HDLC) { // it's 64k if (make_raw_data(bcs)) return; } else { // it's 56k if (make_raw_data_56k(bcs)) return; }; if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger fill_dma2: c%d %4lx", bcs->channel, bcs->Flag); if (test_and_clear_bit(BC_FLG_NOFRAME, &bcs->Flag)) { write_raw(bcs, bcs->hw.tiger.sendp, bcs->hw.tiger.free); } else if (test_and_clear_bit(BC_FLG_HALF, &bcs->Flag)) { p = bus_to_virt(inl(bcs->cs->hw.njet.base + NETJET_DMA_READ_ADR)); sp = bcs->hw.tiger.sendp; if (p == bcs->hw.tiger.s_end) p = bcs->hw.tiger.send - 1; if (sp == bcs->hw.tiger.s_end) sp = bcs->hw.tiger.send - 1; cnt = p - sp; if (cnt < 0) { write_raw(bcs, bcs->hw.tiger.sendp, bcs->hw.tiger.free); } else { p++; cnt++; if (p > bcs->hw.tiger.s_end) p = bcs->hw.tiger.send; p++; cnt++; if (p > bcs->hw.tiger.s_end) p = bcs->hw.tiger.send; write_raw(bcs, p, bcs->hw.tiger.free - cnt); } } else if (test_and_clear_bit(BC_FLG_EMPTY, &bcs->Flag)) { p = bus_to_virt(inl(bcs->cs->hw.njet.base + NETJET_DMA_READ_ADR)); cnt = bcs->hw.tiger.s_end - p; if (cnt < 2) { p = bcs->hw.tiger.send + 1; cnt = NETJET_DMA_TXSIZE / 2 - 2; } else { p++; p++; if (cnt <= (NETJET_DMA_TXSIZE / 2)) cnt += NETJET_DMA_TXSIZE / 2; cnt--; cnt--; } write_raw(bcs, p, cnt); } if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger fill_dma3: c%d %4lx", bcs->channel, bcs->Flag); } static void write_raw(struct BCState *bcs, u_int *buf, int cnt) { u_int mask, val, *p = buf; u_int i, s_cnt; if (cnt <= 0) return; if (test_bit(BC_FLG_BUSY, &bcs->Flag)) { if (bcs->hw.tiger.sendcnt > cnt) { s_cnt = cnt; bcs->hw.tiger.sendcnt -= cnt; } else { s_cnt = bcs->hw.tiger.sendcnt; bcs->hw.tiger.sendcnt = 0; } if (bcs->channel) mask = 0xffff00ff; else mask = 0xffffff00; for (i = 0; i < s_cnt; i++) { val = bcs->channel ? ((bcs->hw.tiger.sp[i] << 8) & 0xff00) : (bcs->hw.tiger.sp[i]); *p &= mask; *p++ |= val; if (p > bcs->hw.tiger.s_end) p = bcs->hw.tiger.send; } bcs->hw.tiger.s_tot += s_cnt; if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger write_raw: c%d %p-%p %d/%d %d %x", bcs->channel, buf, p, s_cnt, cnt, bcs->hw.tiger.sendcnt, bcs->cs->hw.njet.irqstat0); if (bcs->cs->debug & L1_DEB_HSCX_FIFO) printframe(bcs->cs, bcs->hw.tiger.sp, s_cnt, "snd"); bcs->hw.tiger.sp += s_cnt; bcs->hw.tiger.sendp = p; if (!bcs->hw.tiger.sendcnt) { if (!bcs->tx_skb) { debugl1(bcs->cs, "tiger write_raw: NULL skb s_cnt %d", s_cnt); } 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->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; } test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); bcs->hw.tiger.free = cnt - s_cnt; if (bcs->hw.tiger.free > (NETJET_DMA_TXSIZE / 2)) test_and_set_bit(BC_FLG_HALF, &bcs->Flag); else { test_and_clear_bit(BC_FLG_HALF, &bcs->Flag); test_and_set_bit(BC_FLG_NOFRAME, &bcs->Flag); } if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) { netjet_fill_dma(bcs); } else { mask ^= 0xffffffff; if (s_cnt < cnt) { for (i = s_cnt; i < cnt; i++) { *p++ |= mask; if (p > bcs->hw.tiger.s_end) p = bcs->hw.tiger.send; } if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger write_raw: fill rest %d", cnt - s_cnt); } test_and_set_bit(B_XMTBUFREADY, &bcs->event); schedule_work(&bcs->tqueue); } } } else if (test_and_clear_bit(BC_FLG_NOFRAME, &bcs->Flag)) { test_and_set_bit(BC_FLG_HALF, &bcs->Flag); fill_mem(bcs, buf, cnt, bcs->channel, 0xff); bcs->hw.tiger.free += cnt; if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger write_raw: fill half"); } else if (test_and_clear_bit(BC_FLG_HALF, &bcs->Flag)) { test_and_set_bit(BC_FLG_EMPTY, &bcs->Flag); fill_mem(bcs, buf, cnt, bcs->channel, 0xff); if (bcs->cs->debug & L1_DEB_HSCX) debugl1(bcs->cs, "tiger write_raw: fill full"); } } void write_tiger(struct IsdnCardState *cs) { u_int *p, cnt = NETJET_DMA_TXSIZE / 2; if ((cs->hw.njet.irqstat0 & cs->hw.njet.last_is0) & NETJET_IRQM0_WRITE) { debugl1(cs, "tiger warn write double dma %x/%x", cs->hw.njet.irqstat0, cs->hw.njet.last_is0); #ifdef ERROR_STATISTIC if (cs->bcs[0].mode) cs->bcs[0].err_tx++; if (cs->bcs[1].mode) cs->bcs[1].err_tx++; #endif return; } else { cs->hw.njet.last_is0 &= ~NETJET_IRQM0_WRITE; cs->hw.njet.last_is0 |= (cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE); } if (cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE_1) p = cs->bcs[0].hw.tiger.send + NETJET_DMA_TXSIZE - 1; else p = cs->bcs[0].hw.tiger.send + cnt - 1; if ((cs->bcs[0].mode == L1_MODE_HDLC) || (cs->bcs[0].mode == L1_MODE_HDLC_56K)) write_raw(cs->bcs, p, cnt); if ((cs->bcs[1].mode == L1_MODE_HDLC) || (cs->bcs[1].mode == L1_MODE_HDLC_56K)) write_raw(cs->bcs + 1, p, cnt); cs->hw.njet.irqstat0 &= ~NETJET_IRQM0_WRITE; } static void tiger_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; 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 "tiger_l2l1: this shouldn't happen\n"); } else { 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_tiger(bcs, st->l1.mode, st->l1.bc); /* 2001/10/04 Christoph Ersfeld, Formula-n Europe AG */ spin_unlock_irqrestore(&bcs->cs->lock, flags); bcs->cs->cardmsg(bcs->cs, MDL_BC_ASSIGN, (void *)(&st->l1.bc)); l1_msg_b(st, pr, arg); break; case (PH_DEACTIVATE | REQUEST): /* 2001/10/04 Christoph Ersfeld, Formula-n Europe AG */ bcs->cs->cardmsg(bcs->cs, MDL_BC_RELEASE, (void *)(&st->l1.bc)); 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_tiger(bcs, 0, st->l1.bc); spin_unlock_irqrestore(&bcs->cs->lock, flags); st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL); break; } } static void close_tigerstate(struct BCState *bcs) { mode_tiger(bcs, 0, bcs->channel); if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) { kfree(bcs->hw.tiger.rcvbuf); bcs->hw.tiger.rcvbuf = NULL; kfree(bcs->hw.tiger.sendbuf); bcs->hw.tiger.sendbuf = 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_tigerstate(struct IsdnCardState *cs, struct BCState *bcs) { if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) { if (!(bcs->hw.tiger.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) { printk(KERN_WARNING "HiSax: No memory for tiger.rcvbuf\n"); return (1); } if (!(bcs->hw.tiger.sendbuf = kmalloc(RAW_BUFMAX, GFP_ATOMIC))) { printk(KERN_WARNING "HiSax: No memory for tiger.sendbuf\n"); return (1); } skb_queue_head_init(&bcs->rqueue); skb_queue_head_init(&bcs->squeue); } bcs->tx_skb = NULL; bcs->hw.tiger.sendcnt = 0; test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); bcs->event = 0; bcs->tx_cnt = 0; return (0); } static int setstack_tiger(struct PStack *st, struct BCState *bcs) { bcs->channel = st->l1.bc; if (open_tigerstate(st->l1.hardware, bcs)) return (-1); st->l1.bcs = bcs; st->l2.l2l1 = tiger_l2l1; setstack_manager(st); bcs->st = st; setstack_l1_B(st); return (0); } void inittiger(struct IsdnCardState *cs) { if (!(cs->bcs[0].hw.tiger.send = kmalloc(NETJET_DMA_TXSIZE * sizeof(unsigned int), GFP_KERNEL | GFP_DMA))) { printk(KERN_WARNING "HiSax: No memory for tiger.send\n"); return; } cs->bcs[0].hw.tiger.s_irq = cs->bcs[0].hw.tiger.send + NETJET_DMA_TXSIZE / 2 - 1; cs->bcs[0].hw.tiger.s_end = cs->bcs[0].hw.tiger.send + NETJET_DMA_TXSIZE - 1; cs->bcs[1].hw.tiger.send = cs->bcs[0].hw.tiger.send; cs->bcs[1].hw.tiger.s_irq = cs->bcs[0].hw.tiger.s_irq; cs->bcs[1].hw.tiger.s_end = cs->bcs[0].hw.tiger.s_end; memset(cs->bcs[0].hw.tiger.send, 0xff, NETJET_DMA_TXSIZE * sizeof(unsigned int)); debugl1(cs, "tiger: send buf %p - %p", cs->bcs[0].hw.tiger.send, cs->bcs[0].hw.tiger.send + NETJET_DMA_TXSIZE - 1); outl(virt_to_bus(cs->bcs[0].hw.tiger.send), cs->hw.njet.base + NETJET_DMA_READ_START); outl(virt_to_bus(cs->bcs[0].hw.tiger.s_irq), cs->hw.njet.base + NETJET_DMA_READ_IRQ); outl(virt_to_bus(cs->bcs[0].hw.tiger.s_end), cs->hw.njet.base + NETJET_DMA_READ_END); if (!(cs->bcs[0].hw.tiger.rec = kmalloc(NETJET_DMA_RXSIZE * sizeof(unsigned int), GFP_KERNEL | GFP_DMA))) { printk(KERN_WARNING "HiSax: No memory for tiger.rec\n"); return; } debugl1(cs, "tiger: rec buf %p - %p", cs->bcs[0].hw.tiger.rec, cs->bcs[0].hw.tiger.rec + NETJET_DMA_RXSIZE - 1); cs->bcs[1].hw.tiger.rec = cs->bcs[0].hw.tiger.rec; memset(cs->bcs[0].hw.tiger.rec, 0xff, NETJET_DMA_RXSIZE * sizeof(unsigned int)); outl(virt_to_bus(cs->bcs[0].hw.tiger.rec), cs->hw.njet.base + NETJET_DMA_WRITE_START); outl(virt_to_bus(cs->bcs[0].hw.tiger.rec + NETJET_DMA_RXSIZE / 2 - 1), cs->hw.njet.base + NETJET_DMA_WRITE_IRQ); outl(virt_to_bus(cs->bcs[0].hw.tiger.rec + NETJET_DMA_RXSIZE - 1), cs->hw.njet.base + NETJET_DMA_WRITE_END); debugl1(cs, "tiger: dmacfg %x/%x pulse=%d", inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR), inl(cs->hw.njet.base + NETJET_DMA_READ_ADR), bytein(cs->hw.njet.base + NETJET_PULSE_CNT)); cs->hw.njet.last_is0 = 0; cs->bcs[0].BC_SetStack = setstack_tiger; cs->bcs[1].BC_SetStack = setstack_tiger; cs->bcs[0].BC_Close = close_tigerstate; cs->bcs[1].BC_Close = close_tigerstate; } static void releasetiger(struct IsdnCardState *cs) { kfree(cs->bcs[0].hw.tiger.send); cs->bcs[0].hw.tiger.send = NULL; cs->bcs[1].hw.tiger.send = NULL; kfree(cs->bcs[0].hw.tiger.rec); cs->bcs[0].hw.tiger.rec = NULL; cs->bcs[1].hw.tiger.rec = NULL; } void release_io_netjet(struct IsdnCardState *cs) { byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0); byteout(cs->hw.njet.base + NETJET_IRQMASK1, 0); releasetiger(cs); release_region(cs->hw.njet.base, 256); }