/* $Id: netjet.c,v 1.1.4.1 2001/11/20 14:19:36 kai Exp $ * * low level stuff for Traverse Technologie NETJet ISDN cards * * Author Karsten Keil * Copyright by Karsten Keil * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * * Thanks to Traverse Technologie Australia for documents and information * */ #define __NO_VERSION__ #include #include "hisax.h" #include "isac.h" #include "hscx.h" #include "isdnl1.h" #include #include #include #include #include "netjet.h" const char *NETjet_revision = "$Revision: 1.1.4.1 $"; /* Interface functions */ u_char NETjet_ReadIC(struct IsdnCardState *cs, u_char offset) { long flags; u_char ret; save_flags(flags); cli(); 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)); restore_flags(flags); return(ret); } void NETjet_WriteIC(struct IsdnCardState *cs, u_char offset, u_char value) { long flags; save_flags(flags); cli(); 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); restore_flags(flags); } 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); } __u16 fcstab[256] = { 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 }; 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); } 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 bcs->hw.tiger.s_end) p = bcs->hw.tiger.send; } } void mode_tiger(struct BCState *bcs, int mode, int bc) { struct IsdnCardState *cs = bcs->cs; 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); } 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); 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, 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; itx_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 %ld 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; itx_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 %ld 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); } bcs->event |= 1 << B_RCVBUFREADY; queue_task(&bcs->tqueue, &tq_immediate); mark_bh(IMMEDIATE_BH); 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;ichannel ? ((*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;jcs->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 %4x", 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 %4x", 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 %4x", 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; ichannel ? ((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 %x-%x %d/%d %d %x", bcs->channel, (u_int)buf, (u_int)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 (bcs->st->lli.l1writewakeup && (PACKET_NOACK != bcs->tx_skb->pkt_type)) bcs->st->lli.l1writewakeup(bcs->st, bcs->tx_skb->len); 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; ibcs->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); } bcs->event |= 1 << B_XMTBUFREADY; queue_task(&bcs->tqueue, &tq_immediate); mark_bh(IMMEDIATE_BH); } } } 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 sk_buff *skb = arg; long flags; switch (pr) { case (PH_DATA | REQUEST): save_flags(flags); cli(); if (st->l1.bcs->tx_skb) { skb_queue_tail(&st->l1.bcs->squeue, skb); restore_flags(flags); } else { st->l1.bcs->tx_skb = skb; st->l1.bcs->cs->BC_Send_Data(st->l1.bcs); restore_flags(flags); } break; case (PH_PULL | INDICATION): if (st->l1.bcs->tx_skb) { printk(KERN_WARNING "tiger_l2l1: this shouldn't happen\n"); break; } save_flags(flags); cli(); st->l1.bcs->tx_skb = skb; st->l1.bcs->cs->BC_Send_Data(st->l1.bcs); restore_flags(flags); break; case (PH_PULL | REQUEST): if (!st->l1.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): test_and_set_bit(BC_FLG_ACTIV, &st->l1.bcs->Flag); mode_tiger(st->l1.bcs, st->l1.mode, st->l1.bc); l1_msg_b(st, pr, arg); break; case (PH_DEACTIVATE | REQUEST): l1_msg_b(st, pr, arg); break; case (PH_DEACTIVATE | CONFIRM): test_and_clear_bit(BC_FLG_ACTIV, &st->l1.bcs->Flag); test_and_clear_bit(BC_FLG_BUSY, &st->l1.bcs->Flag); mode_tiger(st->l1.bcs, 0, st->l1.bc); st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL); break; } } void close_tigerstate(struct BCState *bcs) { mode_tiger(bcs, 0, bcs->channel); if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) { if (bcs->hw.tiger.rcvbuf) { kfree(bcs->hw.tiger.rcvbuf); bcs->hw.tiger.rcvbuf = NULL; } if (bcs->hw.tiger.sendbuf) { 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); } 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 __init 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 %x - %x", (u_int)cs->bcs[0].hw.tiger.send, (u_int)(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 %x - %x", (u_int)cs->bcs[0].hw.tiger.rec, (u_int)(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; } void releasetiger(struct IsdnCardState *cs) { if (cs->bcs[0].hw.tiger.send) { kfree(cs->bcs[0].hw.tiger.send); cs->bcs[0].hw.tiger.send = NULL; } if (cs->bcs[1].hw.tiger.send) { cs->bcs[1].hw.tiger.send = NULL; } if (cs->bcs[0].hw.tiger.rec) { kfree(cs->bcs[0].hw.tiger.rec); cs->bcs[0].hw.tiger.rec = NULL; } if (cs->bcs[1].hw.tiger.rec) { 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); }