Annotation of sys/arch/mvme68k/stand/sboot/if_le.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_le.c,v 1.7 2003/08/19 10:22:30 deraadt Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1995 Theo de Raadt
! 5: *
! 6: * Redistribution and use in source and binary forms, with or without
! 7: * modification, are permitted provided that the following conditions
! 8: * are met:
! 9: * 1. Redistributions of source code must retain the above copyright
! 10: * notice, this list of conditions and the following disclaimer.
! 11: * 2. Redistributions in binary form must reproduce the above copyright
! 12: * notice, this list of conditions and the following disclaimer in the
! 13: * documentation and/or other materials provided with the distribution.
! 14: *
! 15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
! 16: * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 18: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
! 19: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 20: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 21: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 22: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 23: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 24: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 25: * SUCH DAMAGE.
! 26: *
! 27: * Copyright (c) 1993 Adam Glass
! 28: * All rights reserved.
! 29: *
! 30: * Redistribution and use in source and binary forms, with or without
! 31: * modification, are permitted provided that the following conditions
! 32: * are met:
! 33: * 1. Redistributions of source code must retain the above copyright
! 34: * notice, this list of conditions and the following disclaimer.
! 35: * 2. Redistributions in binary form must reproduce the above copyright
! 36: * notice, this list of conditions and the following disclaimer in the
! 37: * documentation and/or other materials provided with the distribution.
! 38: * 3. All advertising materials mentioning features or use of this software
! 39: * must display the following acknowledgement:
! 40: * This product includes software developed by Adam Glass.
! 41: * 4. The name of the Author may not be used to endorse or promote products
! 42: * derived from this software without specific prior written permission.
! 43: *
! 44: * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND
! 45: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 46: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 47: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 48: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 49: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 50: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 51: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 52: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 53: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 54: * SUCH DAMAGE.
! 55: */
! 56:
! 57: #include <sys/cdefs.h>
! 58: #include <stand.h>
! 59: #include "sboot.h"
! 60: #include "if_lereg.h"
! 61:
! 62: struct {
! 63: struct lereg1 *sc_r1; /* LANCE registers */
! 64: struct lereg2 *sc_r2; /* RAM */
! 65: int next_rmd;
! 66: int next_tmd;
! 67: } le_softc;
! 68:
! 69: static void
! 70: le_error(char *str, struct lereg1 *ler1)
! 71: {
! 72: /* ler1->ler1_rap = LE_CSRO done in caller */
! 73: if (ler1->ler1_rdp & LE_C0_BABL) {
! 74: printf("le0: been babbling, found by '%s'\n", str);
! 75: callrom();
! 76: }
! 77: if (ler1->ler1_rdp & LE_C0_CERR) {
! 78: ler1->ler1_rdp = LE_C0_CERR;
! 79: }
! 80: if (ler1->ler1_rdp & LE_C0_MISS) {
! 81: ler1->ler1_rdp = LE_C0_MISS;
! 82: }
! 83: if (ler1->ler1_rdp & LE_C0_MERR) {
! 84: printf("le0: memory error in '%s'\n", str);
! 85: callrom();
! 86: }
! 87: }
! 88:
! 89: static void
! 90: le_reset(u_char *myea)
! 91: {
! 92: struct lereg1 *ler1 = le_softc.sc_r1;
! 93: struct lereg2 *ler2 = le_softc.sc_r2;
! 94: unsigned int a;
! 95: int timo = 100000, stat, i;
! 96:
! 97: ler1->ler1_rap = LE_CSR0;
! 98: ler1->ler1_rdp = LE_C0_STOP; /* do nothing until we are finished */
! 99:
! 100: bzero(ler2, sizeof(*ler2));
! 101:
! 102: ler2->ler2_mode = LE_MODE_NORMAL;
! 103: ler2->ler2_padr[0] = myea[1];
! 104: ler2->ler2_padr[1] = myea[0];
! 105: ler2->ler2_padr[2] = myea[3];
! 106: ler2->ler2_padr[3] = myea[2];
! 107: ler2->ler2_padr[4] = myea[5];
! 108: ler2->ler2_padr[5] = myea[4];
! 109:
! 110: ler2->ler2_ladrf0 = 0;
! 111: ler2->ler2_ladrf1 = 0;
! 112:
! 113: a = (u_int) ler2->ler2_rmd;
! 114: ler2->ler2_rlen = LE_RLEN | (a >> 16);
! 115: ler2->ler2_rdra = a & LE_ADDR_LOW_MASK;
! 116:
! 117: a = (u_int) ler2->ler2_tmd;
! 118: ler2->ler2_tlen = LE_TLEN | (a >> 16);
! 119: ler2->ler2_tdra = a & LE_ADDR_LOW_MASK;
! 120:
! 121: ler1->ler1_rap = LE_CSR1;
! 122: a = (u_int) ler2;
! 123: ler1->ler1_rdp = a & LE_ADDR_LOW_MASK;
! 124: ler1->ler1_rap = LE_CSR2;
! 125: ler1->ler1_rdp = a >> 16;
! 126:
! 127: for (i = 0; i < LERBUF; i++) {
! 128: a = (u_int) & ler2->ler2_rbuf[i];
! 129: ler2->ler2_rmd[i].rmd0 = a & LE_ADDR_LOW_MASK;
! 130: ler2->ler2_rmd[i].rmd1_bits = LE_R1_OWN;
! 131: ler2->ler2_rmd[i].rmd1_hadr = a >> 16;
! 132: ler2->ler2_rmd[i].rmd2 = -LEMTU;
! 133: ler2->ler2_rmd[i].rmd3 = 0;
! 134: }
! 135: for (i = 0; i < LETBUF; i++) {
! 136: a = (u_int) & ler2->ler2_tbuf[i];
! 137: ler2->ler2_tmd[i].tmd0 = a & LE_ADDR_LOW_MASK;
! 138: ler2->ler2_tmd[i].tmd1_bits = 0;
! 139: ler2->ler2_tmd[i].tmd1_hadr = a >> 16;
! 140: ler2->ler2_tmd[i].tmd2 = 0;
! 141: ler2->ler2_tmd[i].tmd3 = 0;
! 142: }
! 143:
! 144: ler1->ler1_rap = LE_CSR3;
! 145: ler1->ler1_rdp = LE_C3_BSWP;
! 146:
! 147: ler1->ler1_rap = LE_CSR0;
! 148: ler1->ler1_rdp = LE_C0_INIT;
! 149: do {
! 150: if (--timo == 0) {
! 151: printf("le0: init timeout, stat = 0x%x\n", stat);
! 152: break;
! 153: }
! 154: stat = ler1->ler1_rdp;
! 155: } while ((stat & LE_C0_IDON) == 0);
! 156:
! 157: ler1->ler1_rdp = LE_C0_IDON;
! 158: le_softc.next_rmd = 0;
! 159: le_softc.next_tmd = 0;
! 160: ler1->ler1_rap = LE_CSR0;
! 161: ler1->ler1_rdp = LE_C0_STRT;
! 162: }
! 163:
! 164: static int
! 165: le_poll(void *pkt, int len)
! 166: {
! 167: struct lereg1 *ler1 = le_softc.sc_r1;
! 168: struct lereg2 *ler2 = le_softc.sc_r2;
! 169: unsigned int a;
! 170: int length;
! 171: struct lermd *rmd;
! 172:
! 173: ler1->ler1_rap = LE_CSR0;
! 174: if ((ler1->ler1_rdp & LE_C0_RINT) != 0)
! 175: ler1->ler1_rdp = LE_C0_RINT;
! 176: rmd = &ler2->ler2_rmd[le_softc.next_rmd];
! 177: if (rmd->rmd1_bits & LE_R1_OWN) {
! 178: return (0);
! 179: }
! 180: if (ler1->ler1_rdp & LE_C0_ERR)
! 181: le_error("le_poll", ler1);
! 182: if (rmd->rmd1_bits & LE_R1_ERR) {
! 183: printf("le0_poll: rmd status 0x%x\n", rmd->rmd1_bits);
! 184: length = 0;
! 185: goto cleanup;
! 186: }
! 187: if ((rmd->rmd1_bits & (LE_R1_STP | LE_R1_ENP)) != (LE_R1_STP | LE_R1_ENP)) {
! 188: printf("le_poll: chained packet\n");
! 189: callrom();
! 190: }
! 191: length = rmd->rmd3;
! 192: if (length >= LEMTU) {
! 193: length = 0;
! 194: printf("csr0 when bad things happen: %x\n", ler1->ler1_rdp);
! 195: callrom();
! 196: goto cleanup;
! 197: }
! 198: if (!length)
! 199: goto cleanup;
! 200: length -= 4;
! 201: if (length > 0)
! 202: bcopy((char *) &ler2->ler2_rbuf[le_softc.next_rmd], pkt, length);
! 203:
! 204: cleanup:
! 205: a = (u_int) & ler2->ler2_rbuf[le_softc.next_rmd];
! 206: rmd->rmd0 = a & LE_ADDR_LOW_MASK;
! 207: rmd->rmd1_hadr = a >> 16;
! 208: rmd->rmd2 = -LEMTU;
! 209: le_softc.next_rmd =
! 210: (le_softc.next_rmd == (LERBUF - 1)) ? 0 : (le_softc.next_rmd + 1);
! 211: rmd->rmd1_bits = LE_R1_OWN;
! 212: return length;
! 213: }
! 214:
! 215: int
! 216: le_put(u_char *pkt, size_t len)
! 217: {
! 218: struct lereg1 *ler1 = le_softc.sc_r1;
! 219: struct lereg2 *ler2 = le_softc.sc_r2;
! 220: struct letmd *tmd;
! 221: int timo = 100000, stat, i;
! 222: unsigned int a;
! 223:
! 224: ler1->ler1_rap = LE_CSR0;
! 225: if (ler1->ler1_rdp & LE_C0_ERR)
! 226: le_error("le_put(way before xmit)", ler1);
! 227: tmd = &ler2->ler2_tmd[le_softc.next_tmd];
! 228: while (tmd->tmd1_bits & LE_T1_OWN) {
! 229: printf("le0: output buffer busy\n");
! 230: }
! 231: bcopy(pkt, (char *) ler2->ler2_tbuf[le_softc.next_tmd], len);
! 232: if (len < 64)
! 233: tmd->tmd2 = -64;
! 234: else
! 235: tmd->tmd2 = -len;
! 236: tmd->tmd3 = 0;
! 237: if (ler1->ler1_rdp & LE_C0_ERR)
! 238: le_error("le_put(before xmit)", ler1);
! 239: tmd->tmd1_bits = LE_T1_STP | LE_T1_ENP | LE_T1_OWN;
! 240: a = (u_int) & ler2->ler2_tbuf[le_softc.next_tmd];
! 241: tmd->tmd0 = a & LE_ADDR_LOW_MASK;
! 242: tmd->tmd1_hadr = a >> 16;
! 243: ler1->ler1_rdp = LE_C0_TDMD;
! 244: if (ler1->ler1_rdp & LE_C0_ERR)
! 245: le_error("le_put(after xmit)", ler1);
! 246: do {
! 247: if (--timo == 0) {
! 248: printf("le0: transmit timeout, stat = 0x%x\n",
! 249: stat);
! 250: if (ler1->ler1_rdp & LE_C0_ERR)
! 251: le_error("le_put(timeout)", ler1);
! 252: break;
! 253: }
! 254: stat = ler1->ler1_rdp;
! 255: } while ((stat & LE_C0_TINT) == 0);
! 256: ler1->ler1_rdp = LE_C0_TINT;
! 257: if (ler1->ler1_rdp & LE_C0_ERR) {
! 258: if ((ler1->ler1_rdp & (LE_C0_BABL | LE_C0_CERR | LE_C0_MISS | LE_C0_MERR)) !=
! 259: LE_C0_CERR)
! 260: printf("le_put: xmit error, buf %d\n", le_softc.next_tmd);
! 261: le_error("le_put(xmit error)", ler1);
! 262: }
! 263: le_softc.next_tmd = 0;
! 264: /* (le_softc.next_tmd == (LETBUF - 1)) ? 0 : le_softc.next_tmd + 1;*/
! 265: if (tmd->tmd1_bits & LE_T1_ERR) {
! 266: printf("le0: transmit error, error = 0x%x\n",
! 267: tmd->tmd3);
! 268: return -1;
! 269: }
! 270: return len;
! 271: }
! 272:
! 273: int
! 274: le_get(u_char *pkt, size_t len, u_long timeout)
! 275: {
! 276: int cc;
! 277: int now, then;
! 278: int stopat = ttime() + timeout;
! 279: then = 0;
! 280:
! 281: cc = 0;
! 282: while ((now = ttime()) < stopat && !cc) {
! 283: cc = le_poll(pkt, len);
! 284: if (then != now) {
! 285: #ifdef LE_DEBUG
! 286: printf("%d \r", stopat - now);
! 287: #endif
! 288: then = now;
! 289: }
! 290: if (cc && (pkt[0] != myea[0] || pkt[1] != myea[1] ||
! 291: pkt[2] != myea[2] || pkt[3] != myea[3] ||
! 292: pkt[4] != myea[4] || pkt[5] != myea[5])) {
! 293: cc = 0; /* ignore broadcast / multicast */
! 294: #ifdef LE_DEBUG
! 295: printf("reject (%d sec left)\n", stopat - now);
! 296: #endif
! 297: }
! 298: }
! 299: #ifdef LE_DEBUG
! 300: printf("\n");
! 301: #endif
! 302: return cc;
! 303: }
! 304:
! 305: void
! 306: le_init(void)
! 307: {
! 308: caddr_t addr;
! 309: int *ea = (int *) LANCE_ADDR;
! 310: u_long *eram = (u_long *) ERAM_ADDR;
! 311: u_long e = *ea;
! 312:
! 313: if ((e & 0x2fffff00) == 0x2fffff00) {
! 314: printf("ERROR: ethernet address not set! Use LSAD.\n");
! 315: callrom();
! 316: }
! 317: myea[0] = 0x08;
! 318: myea[1] = 0x00;
! 319: myea[2] = 0x3e;
! 320: e = e >> 8;
! 321: myea[5] = e & 0xff;
! 322: e = e >> 8;
! 323: myea[4] = e & 0xff;
! 324: e = e >> 8;
! 325: myea[3] = e;
! 326: printf("le0: ethernet address: %x:%x:%x:%x:%x:%x\n",
! 327: myea[0], myea[1], myea[2], myea[3], myea[4], myea[5]);
! 328: bzero(&le_softc, sizeof(le_softc));
! 329: le_softc.sc_r1 = (struct lereg1 *) LANCE_REG_ADDR;
! 330: le_softc.sc_r2 = (struct lereg2 *) (*eram - (1024 * 1024));
! 331: le_reset(myea);
! 332: }
! 333:
! 334: void
! 335: le_end(void)
! 336: {
! 337: struct lereg1 *ler1 = le_softc.sc_r1;
! 338:
! 339: ler1->ler1_rap = LE_CSR0;
! 340: ler1->ler1_rdp = LE_C0_STOP;
! 341: }
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