Annotation of sys/arch/sparc/dev/magma.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: magma.c,v 1.19 2004/11/02 21:16:10 miod Exp $ */
! 2: /*
! 3: * magma.c
! 4: *
! 5: * Copyright (c) 1998 Iain Hibbert
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. All advertising materials mentioning features or use of this software
! 17: * must display the following acknowledgement:
! 18: * This product includes software developed by Iain Hibbert
! 19: * 4. The name of the author may not be used to endorse or promote products
! 20: * derived from this software without specific prior written permission.
! 21: *
! 22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 32: *
! 33: */
! 34:
! 35: /*
! 36: * Driver for Magma SBus Serial/Parallel cards using the Cirrus Logic
! 37: * CD1400 & CD1190 chips
! 38: */
! 39:
! 40: #include "magma.h"
! 41:
! 42: #include <sys/param.h>
! 43: #include <sys/systm.h>
! 44: #include <sys/proc.h>
! 45: #include <sys/device.h>
! 46: #include <sys/file.h>
! 47: #include <sys/ioctl.h>
! 48: #include <sys/malloc.h>
! 49: #include <sys/tty.h>
! 50: #include <sys/time.h>
! 51: #include <sys/kernel.h>
! 52: #include <sys/syslog.h>
! 53: #include <sys/conf.h>
! 54: #include <sys/errno.h>
! 55:
! 56: #include <sparc/autoconf.h>
! 57: #include <sparc/conf.h>
! 58: #include <sparc/cpu.h>
! 59: #include <sparc/ctlreg.h>
! 60:
! 61: #include <sparc/sparc/asm.h>
! 62:
! 63: #include <dev/ic/cd1400reg.h>
! 64: #include <dev/ic/cd1190reg.h>
! 65:
! 66: #include <sparc/bppioctl.h>
! 67: #include <sparc/dev/magmareg.h>
! 68:
! 69: /*
! 70: * Select tty soft interrupt bit based on TTY ipl. (stolen from zs.c)
! 71: */
! 72: #if IPL_TTY == 1
! 73: # define IE_MSOFT IE_L1
! 74: #elif IPL_TTY == 4
! 75: # define IE_MSOFT IE_L4
! 76: #elif IPL_TTY == 6
! 77: # define IE_MSOFT IE_L6
! 78: #else
! 79: # error "no suitable software interrupt bit"
! 80: #endif
! 81:
! 82: #ifdef MAGMA_DEBUG
! 83: #define dprintf(x) printf x
! 84: #else
! 85: #define dprintf(x)
! 86: #endif
! 87:
! 88: /*
! 89: * Supported cards table.
! 90: *
! 91: * The table below lists the cards that this driver is likely to
! 92: * be able to support.
! 93: *
! 94: * Cards with parallel ports: except for the LC2+1Sp, they all use
! 95: * the CD1190 chip which I know nothing about. I've tried to leave
! 96: * hooks for it so it shouldn't be too hard to add support later.
! 97: * (I think somebody is working on this separately)
! 98: *
! 99: * Thanks to Bruce at Magma for telling me the hardware offsets.
! 100: */
! 101: static const struct magma_board_info supported_cards[] = {
! 102: {
! 103: "MAGMA_Sp", "MAGMA,4_Sp", "Magma 4 Sp", 4, 0,
! 104: 1, 0xa000, 0xc000, 0xe000, { 0x8000, 0, 0, 0 },
! 105: 0, { 0, 0 }
! 106: },
! 107: {
! 108: "MAGMA_Sp", "MAGMA,8_Sp", "Magma 8 Sp", 8, 0,
! 109: 2, 0xa000, 0xc000, 0xe000, { 0x4000, 0x6000, 0, 0 },
! 110: 0, { 0, 0 }
! 111: },
! 112: {
! 113: "MAGMA_Sp", "MAGMA,_8HS_Sp", "Magma Fast 8 Sp", 8, 0,
! 114: 2, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0, 0 },
! 115: 0, { 0, 0 }
! 116: },
! 117: {
! 118: "MAGMA_Sp", "MAGMA,_8SP_422", "Magma 8 Sp - 422", 8, 0,
! 119: 2, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0, 0 },
! 120: 0, { 0, 0 }
! 121: },
! 122: {
! 123: "MAGMA_Sp", "MAGMA,12_Sp", "Magma 12 Sp", 12, 0,
! 124: 3, 0xa000, 0xc000, 0xe000, { 0x2000, 0x4000, 0x6000, 0 },
! 125: 0, { 0, 0 }
! 126: },
! 127: {
! 128: "MAGMA_Sp", "MAGMA,16_Sp", "Magma 16 Sp", 16, 0,
! 129: 4, 0xd000, 0xe000, 0xf000, { 0x8000, 0x9000, 0xa000, 0xb000 },
! 130: 0, { 0, 0 }
! 131: },
! 132: {
! 133: "MAGMA_Sp", "MAGMA,16_Sp_2", "Magma 16 Sp", 16, 0,
! 134: 4, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0xc000, 0xe000 },
! 135: 0, { 0, 0 }
! 136: },
! 137: {
! 138: "MAGMA_Sp", "MAGMA,16HS_Sp", "Magma Fast 16 Sp", 16, 0,
! 139: 4, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0xc000, 0xe000 },
! 140: 0, { 0, 0 }
! 141: },
! 142: {
! 143: "MAGMA_Sp", "MAGMA,21_Sp", "Magma LC 2+1 Sp", 2, 1,
! 144: 1, 0xa000, 0xc000, 0xe000, { 0x8000, 0, 0, 0 },
! 145: 0, { 0, 0 }
! 146: },
! 147: {
! 148: "MAGMA_Sp", "MAGMA,21HS_Sp", "Magma 2+1 Sp", 2, 1,
! 149: 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 },
! 150: 1, { 0x6000, 0 }
! 151: },
! 152: {
! 153: "MAGMA_Sp", "MAGMA,41_Sp", "Magma 4+1 Sp", 4, 1,
! 154: 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 },
! 155: 1, { 0x6000, 0 }
! 156: },
! 157: {
! 158: "MAGMA_Sp", "MAGMA,82_Sp", "Magma 8+2 Sp", 8, 2,
! 159: 2, 0xd000, 0xe000, 0xf000, { 0x8000, 0x9000, 0, 0 },
! 160: 2, { 0xa000, 0xb000 }
! 161: },
! 162: {
! 163: "MAGMA_Sp", "MAGMA,P1_Sp", "Magma P1 Sp", 0, 1,
! 164: 0, 0, 0, 0, { 0, 0, 0, 0 },
! 165: 1, { 0x8000, 0 }
! 166: },
! 167: {
! 168: "MAGMA_Sp", "MAGMA,P2_Sp", "Magma P2 Sp", 0, 2,
! 169: 0, 0, 0, 0, { 0, 0, 0, 0 },
! 170: 2, { 0x4000, 0x8000 }
! 171: },
! 172: {
! 173: "MAGMA 2+1HS Sp", "", "Magma 2+1HS Sp", 2, 0,
! 174: 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 },
! 175: 1, { 0x8000, 0 }
! 176: },
! 177: {
! 178: NULL, NULL, NULL, 0, 0,
! 179: 0, 0, 0, 0, { 0, 0, 0, 0 },
! 180: 0, { 0, 0 }
! 181: }
! 182: };
! 183:
! 184: /************************************************************************
! 185: *
! 186: * Autoconfig Stuff
! 187: */
! 188:
! 189: struct cfattach magma_ca = {
! 190: sizeof(struct magma_softc), magma_match, magma_attach
! 191: };
! 192:
! 193: struct cfdriver magma_cd = {
! 194: NULL, "magma", DV_DULL
! 195: };
! 196:
! 197: struct cfattach mtty_ca = {
! 198: sizeof(struct mtty_softc), mtty_match, mtty_attach
! 199: };
! 200:
! 201: struct cfdriver mtty_cd = {
! 202: NULL, "mtty", DV_TTY
! 203: };
! 204:
! 205: struct cfattach mbpp_ca = {
! 206: sizeof(struct mbpp_softc), mbpp_match, mbpp_attach
! 207: };
! 208:
! 209: struct cfdriver mbpp_cd = {
! 210: NULL, "mbpp", DV_DULL
! 211: };
! 212:
! 213: /************************************************************************
! 214: *
! 215: * CD1400 Routines
! 216: *
! 217: * cd1400_compute_baud calculate COR/BPR register values
! 218: * cd1400_write_ccr write a value to CD1400 ccr
! 219: * cd1400_read_reg read from a CD1400 register
! 220: * cd1400_write_reg write to a CD1400 register
! 221: * cd1400_enable_transmitter enable transmitting on CD1400 channel
! 222: */
! 223:
! 224: /*
! 225: * compute the bpr/cor pair for any baud rate
! 226: * returns 0 for success, 1 for failure
! 227: */
! 228: int
! 229: cd1400_compute_baud(speed, clock, cor, bpr)
! 230: speed_t speed;
! 231: int clock;
! 232: int *cor, *bpr;
! 233: {
! 234: int c, co, br;
! 235:
! 236: if (speed < 50 || speed > 150000)
! 237: return (1);
! 238:
! 239: for (c = 0, co = 8 ; co <= 2048 ; co <<= 2, c++) {
! 240: br = ((clock * 1000000) + (co * speed) / 2) / (co * speed);
! 241: if (br < 0x100) {
! 242: *bpr = br;
! 243: *cor = c;
! 244: return (0);
! 245: }
! 246: }
! 247:
! 248: return (1);
! 249: }
! 250:
! 251: /*
! 252: * Write a CD1400 channel command, should have a timeout?
! 253: */
! 254: __inline void
! 255: cd1400_write_ccr(cd, cmd)
! 256: struct cd1400 *cd;
! 257: u_char cmd;
! 258: {
! 259: while (cd1400_read_reg(cd, CD1400_CCR))
! 260: ;
! 261:
! 262: cd1400_write_reg(cd, CD1400_CCR, cmd);
! 263: }
! 264:
! 265: /*
! 266: * read a value from a cd1400 register
! 267: */
! 268: __inline u_char
! 269: cd1400_read_reg(cd, reg)
! 270: struct cd1400 *cd;
! 271: int reg;
! 272: {
! 273: return (cd->cd_reg[reg]);
! 274: }
! 275:
! 276: /*
! 277: * write a value to a cd1400 register
! 278: */
! 279: __inline void
! 280: cd1400_write_reg(cd, reg, value)
! 281: struct cd1400 *cd;
! 282: int reg;
! 283: u_char value;
! 284: {
! 285: cd->cd_reg[reg] = value;
! 286: }
! 287:
! 288: /*
! 289: * enable transmit service requests for cd1400 channel
! 290: */
! 291: void
! 292: cd1400_enable_transmitter(cd, channel)
! 293: struct cd1400 *cd;
! 294: int channel;
! 295: {
! 296: register int s, srer;
! 297:
! 298: s = spltty();
! 299: cd1400_write_reg(cd, CD1400_CAR, channel);
! 300: srer = cd1400_read_reg(cd, CD1400_SRER);
! 301: SET(srer, CD1400_SRER_TXRDY);
! 302: cd1400_write_reg(cd, CD1400_SRER, srer);
! 303: splx(s);
! 304: }
! 305:
! 306: /************************************************************************
! 307: *
! 308: * CD1190 Routines
! 309: */
! 310:
! 311: /* XXX well, there are none yet */
! 312:
! 313: /************************************************************************
! 314: *
! 315: * Magma Routines
! 316: *
! 317: * magma_match reports if we have a magma board available
! 318: * magma_attach attaches magma boards to the sbus
! 319: * magma_hard hardware level interrupt routine
! 320: * magma_soft software level interrupt routine
! 321: */
! 322:
! 323: int
! 324: magma_match(parent, vcf, args)
! 325: struct device *parent;
! 326: void *vcf, *args;
! 327: {
! 328: struct confargs *ca = args;
! 329: struct romaux *ra = &ca->ca_ra;
! 330: const struct magma_board_info *card;
! 331:
! 332: for (card = supported_cards; ; card++) {
! 333: if (card->mb_sbusname == NULL)
! 334: /* End of table: no match */
! 335: return (0);
! 336: if (strcmp(ra->ra_name, card->mb_sbusname) == 0)
! 337: break;
! 338: }
! 339:
! 340: #if defined(MAGMA_DEBUG)
! 341: {
! 342: int i;
! 343:
! 344: printf("magma: matched `%s', nvaddrs %d, nreg %d, nintr %d\n",
! 345: ra->ra_name, ra->ra_nvaddrs, ra->ra_nreg, ra->ra_nintr);
! 346: printf("magma: magma_prom `%s'\n",
! 347: getpropstring(ra->ra_node, "magma_prom"));
! 348: printf("magma: intlevels `%s'\n",
! 349: getpropstring(ra->ra_node, "intlevels"));
! 350: printf("magma: chiprev `%s'\n",
! 351: getpropstring(ra->ra_node, "chiprev"));
! 352: printf("magma: clock `%s'\n",
! 353: getpropstring(ra->ra_node, "clock"));
! 354:
! 355: for (i = 0 ; i < ra->ra_nreg ; i++)
! 356: printf("magma: reg %d; ra_iospace = %d, ra_paddr = 0x%x, ra_len = %d\n",
! 357: i, ra->ra_reg[i].rr_iospace,
! 358: (int)ra->ra_reg[i].rr_paddr, ra->ra_reg[i].rr_len);
! 359: for (i = 0 ; i < ra->ra_nintr ; i++)
! 360: printf("magma: intr %d; pri = %d, vec = %d\n",
! 361: i, ra->ra_intr[i].int_pri, ra->ra_intr[i].int_vec);
! 362: }
! 363: #endif
! 364:
! 365: return (1);
! 366: }
! 367:
! 368: void
! 369: magma_attach(parent, dev, args)
! 370: struct device *parent;
! 371: struct device *dev;
! 372: void *args;
! 373: {
! 374: struct confargs *ca = args;
! 375: struct romaux *ra = &ca->ca_ra;
! 376: struct magma_softc *sc = (struct magma_softc *)dev;
! 377: const struct magma_board_info *card;
! 378: char magma_prom[40], *clockstr;
! 379: int chip, cd_clock, len;
! 380: void *base;
! 381:
! 382: len = getprop(ra->ra_node, "magma_prom",
! 383: magma_prom, sizeof(magma_prom) - 1);
! 384: if (len == -1)
! 385: len = 0;
! 386: magma_prom[len] = '\0';
! 387:
! 388: for (card = supported_cards; card->mb_name != NULL; card++) {
! 389: if (strcmp(ra->ra_name, card->mb_sbusname) != 0)
! 390: continue;
! 391: if (strcmp(magma_prom, card->mb_name) == 0)
! 392: break;
! 393: }
! 394:
! 395: if (card->mb_name == NULL) {
! 396: printf(" %s (unsupported)\n", magma_prom);
! 397: return;
! 398: }
! 399:
! 400:
! 401: clockstr = getpropstring(ra->ra_node, "clock");
! 402: if (strlen(clockstr) == 0)
! 403: cd_clock = 0;
! 404: else {
! 405: cd_clock = 0;
! 406: while (*clockstr != '\0')
! 407: cd_clock = cd_clock * 10 + *clockstr++ - '0';
! 408: }
! 409:
! 410: dprintf((" addr 0x%x", sc));
! 411: printf(" pri %d softpri %d:", ra->ra_intr[0].int_pri, IPL_TTY);
! 412: printf(" %s\n", card->mb_realname);
! 413:
! 414: sc->ms_board = card;
! 415: sc->ms_ncd1400 = card->mb_ncd1400;
! 416: sc->ms_ncd1190 = card->mb_ncd1190;
! 417:
! 418: base = mapiodev(&(ra->ra_reg[0]), 0, ra->ra_reg[0].rr_len);
! 419:
! 420: /* the SVCACK* lines are daisychained */
! 421: sc->ms_svcackr = base + card->mb_svcackr;
! 422: sc->ms_svcackt = base + card->mb_svcackt;
! 423: sc->ms_svcackm = base + card->mb_svcackm;
! 424:
! 425: /* Init the cd1400 chips */
! 426: for (chip = 0 ; chip < card->mb_ncd1400 ; chip++) {
! 427: struct cd1400 *cd = &sc->ms_cd1400[chip];
! 428:
! 429: cd->cd_reg = base + card->mb_cd1400[chip];
! 430:
! 431: cd->cd_clock = cd_clock;
! 432:
! 433: /* getpropstring(ra->ra_node, "chiprev"); */
! 434: /* seemingly the Magma drivers just ignore the propstring */
! 435: cd->cd_chiprev = cd1400_read_reg(cd, CD1400_GFRCR);
! 436:
! 437: dprintf(("%s attach CD1400 %d addr 0x%x rev %x clock %dMHz\n",
! 438: sc->ms_dev.dv_xname, chip,
! 439: cd->cd_reg, cd->cd_chiprev, cd->cd_clock));
! 440:
! 441: /* clear GFRCR */
! 442: cd1400_write_reg(cd, CD1400_GFRCR, 0x00);
! 443:
! 444: /* reset whole chip */
! 445: cd1400_write_ccr(cd, CD1400_CCR_CMDRESET | CD1400_CCR_FULLRESET);
! 446:
! 447: /* wait for revision code to be restored */
! 448: while (cd1400_read_reg(cd, CD1400_GFRCR) != cd->cd_chiprev)
! 449: ;
! 450:
! 451: /* set the Prescaler Period Register to tick at 1ms */
! 452: cd1400_write_reg(cd, CD1400_PPR,
! 453: ((cd->cd_clock * 1000000 / CD1400_PPR_PRESCALER + 500) /
! 454: 1000));
! 455:
! 456: /*
! 457: * The LC2+1Sp card is the only card that doesn't have a CD1190
! 458: * for the parallel port, but uses channel 0 of the CD1400, so
! 459: * we make a note of it for later and set up the CD1400 for
! 460: * parallel mode operation.
! 461: */
! 462: if (card->mb_npar && card->mb_ncd1190 == 0) {
! 463: cd1400_write_reg(cd, CD1400_GCR, CD1400_GCR_PARALLEL);
! 464: cd->cd_parmode = 1;
! 465: }
! 466: }
! 467:
! 468: /* init the cd1190 chips */
! 469: for (chip = 0 ; chip < card->mb_ncd1190 ; chip++) {
! 470: struct cd1190 *cd = &sc->ms_cd1190[chip];
! 471:
! 472: cd->cd_reg = base + card->mb_cd1190[chip];
! 473: dprintf(("%s attach CD1190 %d addr 0x%x (failed)\n",
! 474: sc->ms_dev.dv_xname, chip, cd->cd_reg));
! 475: /* XXX don't know anything about these chips yet */
! 476: }
! 477:
! 478: /* configure the children */
! 479: (void)config_found(dev, mtty_match, NULL);
! 480: (void)config_found(dev, mbpp_match, NULL);
! 481:
! 482: /*
! 483: * enable the interrupt handlers
! 484: */
! 485: sc->ms_hardint.ih_fun = magma_hard;
! 486: sc->ms_hardint.ih_arg = sc;
! 487: intr_establish(ra->ra_intr[0].int_pri, &sc->ms_hardint, -1,
! 488: dev->dv_xname);
! 489:
! 490: sc->ms_softint.ih_fun = magma_soft;
! 491: sc->ms_softint.ih_arg = sc;
! 492: intr_establish(IPL_TTY, &sc->ms_softint, IPL_TTY, dev->dv_xname);
! 493: }
! 494:
! 495: /*
! 496: * hard interrupt routine
! 497: *
! 498: * returns 1 if it handled it, otherwise 0
! 499: *
! 500: * runs at interrupt priority
! 501: */
! 502: int
! 503: magma_hard(arg)
! 504: void *arg;
! 505: {
! 506: struct magma_softc *sc = arg;
! 507: struct cd1400 *cd;
! 508: int chip, status = 0;
! 509: int serviced = 0;
! 510: int needsoftint = 0;
! 511:
! 512: /*
! 513: * check status of all the CD1400 chips
! 514: */
! 515: for (chip = 0 ; chip < sc->ms_ncd1400 ; chip++)
! 516: status |= cd1400_read_reg(&sc->ms_cd1400[chip], CD1400_SVRR);
! 517:
! 518: if (ISSET(status, CD1400_SVRR_RXRDY)) {
! 519: /* enter rx service context */
! 520: u_char rivr = *sc->ms_svcackr;
! 521: int port = rivr >> 4;
! 522:
! 523: if (rivr & (1 << 3)) { /* parallel port */
! 524: struct mbpp_port *mbpp;
! 525: int n_chars;
! 526:
! 527: mbpp = &sc->ms_mbpp->ms_port[port];
! 528: cd = mbpp->mp_cd1400;
! 529:
! 530: /* don't think we have to handle exceptions */
! 531: n_chars = cd1400_read_reg(cd, CD1400_RDCR);
! 532: while (n_chars--) {
! 533: if (mbpp->mp_cnt == 0) {
! 534: SET(mbpp->mp_flags, MBPPF_WAKEUP);
! 535: needsoftint = 1;
! 536: break;
! 537: }
! 538: *mbpp->mp_ptr = cd1400_read_reg(cd, CD1400_RDSR);
! 539: mbpp->mp_ptr++;
! 540: mbpp->mp_cnt--;
! 541: }
! 542: } else { /* serial port */
! 543: register struct mtty_port *mtty;
! 544: register u_char *ptr, n_chars, line_stat;
! 545:
! 546: mtty = &sc->ms_mtty->ms_port[port];
! 547: cd = mtty->mp_cd1400;
! 548:
! 549: if (ISSET(rivr, CD1400_RIVR_EXCEPTION)) {
! 550: line_stat = cd1400_read_reg(cd, CD1400_RDSR);
! 551: n_chars = 1;
! 552: } else { /* no exception, received data OK */
! 553: line_stat = 0;
! 554: n_chars = cd1400_read_reg(cd, CD1400_RDCR);
! 555: }
! 556:
! 557: ptr = mtty->mp_rput;
! 558: while (n_chars--) {
! 559: *ptr++ = line_stat;
! 560: *ptr++ = cd1400_read_reg(cd, CD1400_RDSR);
! 561: if (ptr == mtty->mp_rend)
! 562: ptr = mtty->mp_rbuf;
! 563: if (ptr == mtty->mp_rget) {
! 564: if (ptr == mtty->mp_rbuf)
! 565: ptr = mtty->mp_rend;
! 566: ptr -= 2;
! 567: SET(mtty->mp_flags, MTTYF_RING_OVERFLOW);
! 568: break;
! 569: }
! 570: }
! 571: mtty->mp_rput = ptr;
! 572:
! 573: needsoftint = 1;
! 574: }
! 575:
! 576: /* end service context */
! 577: cd1400_write_reg(cd, CD1400_EOSRR, 0);
! 578: serviced = 1;
! 579: } /* if (rx_service...) */
! 580:
! 581: if (ISSET(status, CD1400_SVRR_MDMCH)) {
! 582: /* enter mdm service context */
! 583: u_char mivr = *sc->ms_svcackm;
! 584: int port = mivr >> 4;
! 585: struct mtty_port *mtty;
! 586: int carrier;
! 587: u_char msvr;
! 588:
! 589: /*
! 590: * Handle CD (LC2+1Sp = DSR) changes.
! 591: */
! 592: mtty = &sc->ms_mtty->ms_port[port];
! 593: cd = mtty->mp_cd1400;
! 594: msvr = cd1400_read_reg(cd, CD1400_MSVR2);
! 595: carrier = ISSET(msvr,
! 596: cd->cd_parmode ? CD1400_MSVR2_DSR : CD1400_MSVR2_CD);
! 597:
! 598: if (mtty->mp_carrier != carrier) {
! 599: SET(mtty->mp_flags, MTTYF_CARRIER_CHANGED);
! 600: mtty->mp_carrier = carrier;
! 601: needsoftint = 1;
! 602: }
! 603:
! 604: /* end service context */
! 605: cd1400_write_reg(cd, CD1400_EOSRR, 0);
! 606: serviced = 1;
! 607: } /* if (mdm_service...) */
! 608:
! 609: if (ISSET(status, CD1400_SVRR_TXRDY)) {
! 610: /* enter tx service context */
! 611: u_char tivr = *sc->ms_svcackt;
! 612: int port = tivr >> 4;
! 613:
! 614: if (tivr & (1 << 3)) { /* parallel port */
! 615: struct mbpp_port *mbpp;
! 616:
! 617: mbpp = &sc->ms_mbpp->ms_port[port];
! 618: cd = mbpp->mp_cd1400;
! 619:
! 620: if (mbpp->mp_cnt) {
! 621: int count = 0;
! 622:
! 623: /* fill the fifo */
! 624: while (mbpp->mp_cnt &&
! 625: count++ < CD1400_PAR_FIFO_SIZE) {
! 626: cd1400_write_reg(cd, CD1400_TDR,
! 627: *mbpp->mp_ptr);
! 628: mbpp->mp_ptr++;
! 629: mbpp->mp_cnt--;
! 630: }
! 631: } else {
! 632: /*
! 633: * fifo is empty and we got no more data to
! 634: * send, so shut off interrupts and signal for
! 635: * a wakeup, which can't be done here in case
! 636: * we beat mbpp_send to the tsleep call
! 637: * (we are running at psl > spltty).
! 638: */
! 639: cd1400_write_reg(cd, CD1400_SRER, 0);
! 640: SET(mbpp->mp_flags, MBPPF_WAKEUP);
! 641: needsoftint = 1;
! 642: }
! 643: } else { /* serial port */
! 644: struct mtty_port *mtty;
! 645: struct tty *tp;
! 646:
! 647: mtty = &sc->ms_mtty->ms_port[port];
! 648: cd = mtty->mp_cd1400;
! 649: tp = mtty->mp_tty;
! 650:
! 651: if (!ISSET(mtty->mp_flags, MTTYF_STOP)) {
! 652: register int count = 0;
! 653:
! 654: /* check if we should start/stop a break */
! 655: if (ISSET(mtty->mp_flags, MTTYF_SET_BREAK)) {
! 656: cd1400_write_reg(cd, CD1400_TDR, 0);
! 657: cd1400_write_reg(cd, CD1400_TDR, 0x81);
! 658: /* should we delay too? */
! 659: CLR(mtty->mp_flags, MTTYF_SET_BREAK);
! 660: count += 2;
! 661: }
! 662:
! 663: if (ISSET(mtty->mp_flags, MTTYF_CLR_BREAK)) {
! 664: cd1400_write_reg(cd, CD1400_TDR, 0);
! 665: cd1400_write_reg(cd, CD1400_TDR, 0x83);
! 666: CLR(mtty->mp_flags, MTTYF_CLR_BREAK);
! 667: count += 2;
! 668: }
! 669:
! 670: /*
! 671: * I don't quite fill the fifo in case the last
! 672: * one is a NULL which I have to double up
! 673: * because its the escape code for embedded
! 674: * transmit characters.
! 675: */
! 676: while (mtty->mp_txc > 0 &&
! 677: count < CD1400_TX_FIFO_SIZE - 1) {
! 678: register u_char ch;
! 679:
! 680: ch = *mtty->mp_txp;
! 681:
! 682: mtty->mp_txc--;
! 683: mtty->mp_txp++;
! 684:
! 685: if (ch == 0) {
! 686: cd1400_write_reg(cd,
! 687: CD1400_TDR, ch);
! 688: count++;
! 689: }
! 690:
! 691: cd1400_write_reg(cd, CD1400_TDR, ch);
! 692: count++;
! 693: }
! 694: }
! 695:
! 696: /*
! 697: * If we ran out of work or are requested to STOP then
! 698: * shut off the txrdy interrupts and signal DONE to
! 699: * flush out the chars we have sent.
! 700: */
! 701: if (mtty->mp_txc == 0 ||
! 702: ISSET(mtty->mp_flags, MTTYF_STOP)) {
! 703: register int srer;
! 704:
! 705: srer = cd1400_read_reg(cd, CD1400_SRER);
! 706: CLR(srer, CD1400_SRER_TXRDY);
! 707: cd1400_write_reg(cd, CD1400_SRER, srer);
! 708: CLR(mtty->mp_flags, MTTYF_STOP);
! 709:
! 710: SET(mtty->mp_flags, MTTYF_DONE);
! 711: needsoftint = 1;
! 712: }
! 713: }
! 714:
! 715: /* end service context */
! 716: cd1400_write_reg(cd, CD1400_EOSRR, 0);
! 717: serviced = 1;
! 718: } /* if (tx_service...) */
! 719:
! 720: /* XXX service CD1190 interrupts too
! 721: for (chip = 0 ; chip < sc->ms_ncd1190 ; chip++) {
! 722: }
! 723: */
! 724:
! 725: if (needsoftint) { /* trigger the soft interrupt */
! 726: #if defined(SUN4M)
! 727: if (CPU_ISSUN4M)
! 728: raise(0, IPL_TTY);
! 729: else
! 730: #endif
! 731: ienab_bis(IE_MSOFT);
! 732: }
! 733:
! 734: return (serviced);
! 735: }
! 736:
! 737: /*
! 738: * magma soft interrupt handler
! 739: *
! 740: * returns 1 if it handled it, 0 otherwise
! 741: *
! 742: * runs at spltty()
! 743: */
! 744: int
! 745: magma_soft(arg)
! 746: void *arg;
! 747: {
! 748: struct magma_softc *sc = arg;
! 749: struct mtty_softc *mtty = sc->ms_mtty;
! 750: struct mbpp_softc *mbpp = sc->ms_mbpp;
! 751: int port;
! 752: int serviced = 0;
! 753: int s, flags;
! 754:
! 755: /*
! 756: * check the tty ports (if any) to see what needs doing
! 757: */
! 758: if (mtty) {
! 759: for (port = 0 ; port < mtty->ms_nports ; port++) {
! 760: struct mtty_port *mp = &mtty->ms_port[port];
! 761: struct tty *tp = mp->mp_tty;
! 762:
! 763: if (!ISSET(tp->t_state, TS_ISOPEN))
! 764: continue;
! 765:
! 766: /*
! 767: * handle any received data
! 768: */
! 769: while (mp->mp_rget != mp->mp_rput) {
! 770: u_char stat;
! 771: int data;
! 772:
! 773: stat = mp->mp_rget[0];
! 774: data = mp->mp_rget[1];
! 775: mp->mp_rget =
! 776: ((mp->mp_rget + 2) == mp->mp_rend) ?
! 777: mp->mp_rbuf : (mp->mp_rget + 2);
! 778:
! 779: if (stat & (CD1400_RDSR_BREAK | CD1400_RDSR_FE))
! 780: data |= TTY_FE;
! 781: if (stat & CD1400_RDSR_PE)
! 782: data |= TTY_PE;
! 783:
! 784: if (stat & CD1400_RDSR_OE)
! 785: log(LOG_WARNING,
! 786: "%s%x: fifo overflow\n",
! 787: mtty->ms_dev.dv_xname, port);
! 788:
! 789: (*linesw[tp->t_line].l_rint)(data, tp);
! 790: serviced = 1;
! 791: }
! 792:
! 793: s = splhigh(); /* block out hard interrupt routine */
! 794: flags = mp->mp_flags;
! 795: CLR(mp->mp_flags, MTTYF_DONE | MTTYF_CARRIER_CHANGED |
! 796: MTTYF_RING_OVERFLOW);
! 797: splx(s); /* ok */
! 798:
! 799: if (ISSET(flags, MTTYF_CARRIER_CHANGED)) {
! 800: dprintf(("%s%x: cd %s\n",
! 801: mtty->ms_dev.dv_xname, port,
! 802: mp->mp_carrier ? "on" : "off"));
! 803: (*linesw[tp->t_line].l_modem)(tp,
! 804: mp->mp_carrier);
! 805: serviced = 1;
! 806: }
! 807:
! 808: if (ISSET(flags, MTTYF_RING_OVERFLOW)) {
! 809: log(LOG_WARNING,
! 810: "%s%x: ring buffer overflow\n",
! 811: mtty->ms_dev.dv_xname, port);
! 812: serviced = 1;
! 813: }
! 814:
! 815: if (ISSET(flags, MTTYF_DONE)) {
! 816: ndflush(&tp->t_outq,
! 817: mp->mp_txp - tp->t_outq.c_cf);
! 818: CLR(tp->t_state, TS_BUSY);
! 819: /* might be some more */
! 820: (*linesw[tp->t_line].l_start)(tp);
! 821: serviced = 1;
! 822: }
! 823: } /* for (each mtty...) */
! 824: }
! 825:
! 826: /*
! 827: * check the bpp ports (if any) to see what needs doing
! 828: */
! 829: if (mbpp) {
! 830: for (port = 0 ; port < mbpp->ms_nports ; port++) {
! 831: struct mbpp_port *mp = &mbpp->ms_port[port];
! 832:
! 833: if (!ISSET(mp->mp_flags, MBPPF_OPEN))
! 834: continue;
! 835:
! 836: s = splhigh(); /* block out hard intr routine */
! 837: flags = mp->mp_flags;
! 838: CLR(mp->mp_flags, MBPPF_WAKEUP);
! 839: splx(s);
! 840:
! 841: if (ISSET(flags, MBPPF_WAKEUP)) {
! 842: wakeup(mp);
! 843: serviced = 1;
! 844: }
! 845: } /* for (each mbpp...) */
! 846: }
! 847:
! 848: return (serviced);
! 849: }
! 850:
! 851: /************************************************************************
! 852: *
! 853: * MTTY Routines
! 854: *
! 855: * mtty_match match one mtty device
! 856: * mtty_attach attach mtty devices
! 857: * mttyopen open mtty device
! 858: * mttyclose close mtty device
! 859: * mttyread read from mtty
! 860: * mttywrite write to mtty
! 861: * mttyioctl do ioctl on mtty
! 862: * mttytty return tty pointer for mtty
! 863: * mttystop stop mtty device
! 864: * mtty_start start mtty device
! 865: * mtty_param set mtty parameters
! 866: * mtty_modem_control set modem control lines
! 867: */
! 868:
! 869: int
! 870: mtty_match(parent, vcf, args)
! 871: struct device *parent;
! 872: void *vcf, *args;
! 873: {
! 874: struct magma_softc *sc = (struct magma_softc *)parent;
! 875:
! 876: return (args == mtty_match && sc->ms_board->mb_nser &&
! 877: sc->ms_mtty == NULL);
! 878: }
! 879:
! 880: void
! 881: mtty_attach(parent, dev, args)
! 882: struct device *parent;
! 883: struct device *dev;
! 884: void *args;
! 885: {
! 886: struct magma_softc *sc = (struct magma_softc *)parent;
! 887: struct mtty_softc *ms = (struct mtty_softc *)dev;
! 888: int port, chip, chan;
! 889:
! 890: sc->ms_mtty = ms;
! 891: dprintf((" addr 0x%x", ms));
! 892:
! 893: for (port = chip = chan = 0 ; port < sc->ms_board->mb_nser ; port++) {
! 894: struct mtty_port *mp = &ms->ms_port[port];
! 895: struct tty *tp;
! 896:
! 897: mp->mp_cd1400 = &sc->ms_cd1400[chip];
! 898: if (mp->mp_cd1400->cd_parmode && chan == 0)
! 899: chan = 1; /* skip channel 0 if parmode */
! 900: mp->mp_channel = chan;
! 901:
! 902: tp = ttymalloc();
! 903: tp->t_oproc = mtty_start;
! 904: tp->t_param = mtty_param;
! 905:
! 906: mp->mp_tty = tp;
! 907:
! 908: mp->mp_rbuf = malloc(MTTY_RBUF_SIZE, M_DEVBUF, M_NOWAIT);
! 909: if (mp->mp_rbuf == NULL)
! 910: break;
! 911:
! 912: mp->mp_rend = mp->mp_rbuf + MTTY_RBUF_SIZE;
! 913:
! 914: chan = (chan + 1) % CD1400_NO_OF_CHANNELS;
! 915: if (chan == 0)
! 916: chip++;
! 917: }
! 918:
! 919: ms->ms_nports = port;
! 920: printf(": %d tty%s\n", port, port == 1 ? "" : "s");
! 921: }
! 922:
! 923: /*
! 924: * open routine. returns zero if successful, else error code
! 925: */
! 926: int
! 927: mttyopen(dev, flags, mode, p)
! 928: dev_t dev;
! 929: int flags;
! 930: int mode;
! 931: struct proc *p;
! 932: {
! 933: int card = MAGMA_CARD(dev);
! 934: int port = MAGMA_PORT(dev);
! 935: struct mtty_softc *ms;
! 936: struct mtty_port *mp;
! 937: struct tty *tp;
! 938: struct cd1400 *cd;
! 939: int s;
! 940:
! 941: if (card >= mtty_cd.cd_ndevs || (ms = mtty_cd.cd_devs[card]) == NULL ||
! 942: port >= ms->ms_nports)
! 943: return (ENXIO); /* device not configured */
! 944:
! 945: mp = &ms->ms_port[port];
! 946: tp = mp->mp_tty;
! 947: tp->t_dev = dev;
! 948:
! 949: if (!ISSET(tp->t_state, TS_ISOPEN)) {
! 950: SET(tp->t_state, TS_WOPEN);
! 951:
! 952: /* set defaults */
! 953: ttychars(tp);
! 954: tp->t_iflag = TTYDEF_IFLAG;
! 955: tp->t_oflag = TTYDEF_OFLAG;
! 956: tp->t_cflag = TTYDEF_CFLAG;
! 957: if (ISSET(mp->mp_openflags, TIOCFLAG_CLOCAL))
! 958: SET(tp->t_cflag, CLOCAL);
! 959: if (ISSET(mp->mp_openflags, TIOCFLAG_CRTSCTS))
! 960: SET(tp->t_cflag, CRTSCTS);
! 961: if (ISSET(mp->mp_openflags, TIOCFLAG_MDMBUF))
! 962: SET(tp->t_cflag, MDMBUF);
! 963: tp->t_lflag = TTYDEF_LFLAG;
! 964: tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
! 965:
! 966: /* init ring buffer */
! 967: mp->mp_rput = mp->mp_rget = mp->mp_rbuf;
! 968:
! 969: s = spltty();
! 970:
! 971: /* reset CD1400 channel */
! 972: cd = mp->mp_cd1400;
! 973: cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel);
! 974: cd1400_write_ccr(cd, CD1400_CCR_CMDRESET);
! 975:
! 976: /* encode the port number in top half of LIVR */
! 977: cd1400_write_reg(cd, CD1400_LIVR, port << 4);
! 978:
! 979: /* sets parameters and raises DTR */
! 980: (void)mtty_param(tp, &tp->t_termios);
! 981:
! 982: /* set tty watermarks */
! 983: ttsetwater(tp);
! 984:
! 985: /* enable service requests */
! 986: cd1400_write_reg(cd, CD1400_SRER,
! 987: CD1400_SRER_RXDATA | CD1400_SRER_MDMCH);
! 988:
! 989: /* tell the tty about the carrier status */
! 990: if (ISSET(mp->mp_openflags, TIOCFLAG_SOFTCAR) || mp->mp_carrier)
! 991: SET(tp->t_state, TS_CARR_ON);
! 992: else
! 993: CLR(tp->t_state, TS_CARR_ON);
! 994: } else if (ISSET(tp->t_state, TS_XCLUDE) && p->p_ucred->cr_uid != 0) {
! 995: return (EBUSY); /* superuser can break exclusive access */
! 996: } else {
! 997: s = spltty();
! 998: }
! 999:
! 1000: /* wait for carrier if necessary */
! 1001: if (!ISSET(flags, O_NONBLOCK)) {
! 1002: while (!ISSET(tp->t_cflag, CLOCAL) &&
! 1003: !ISSET(tp->t_state, TS_CARR_ON)) {
! 1004: int error;
! 1005:
! 1006: SET(tp->t_state, TS_WOPEN);
! 1007: error = ttysleep(tp, &tp->t_rawq, TTIPRI | PCATCH,
! 1008: "mttydcd", 0);
! 1009: if (error != 0) {
! 1010: splx(s);
! 1011: CLR(tp->t_state, TS_WOPEN);
! 1012: return (error);
! 1013: }
! 1014: }
! 1015: }
! 1016:
! 1017: splx(s);
! 1018:
! 1019: return ((*linesw[tp->t_line].l_open)(dev, tp));
! 1020: }
! 1021:
! 1022: /*
! 1023: * close routine. returns zero if successful, else error code
! 1024: */
! 1025: int
! 1026: mttyclose(dev, flag, mode, p)
! 1027: dev_t dev;
! 1028: int flag;
! 1029: int mode;
! 1030: struct proc *p;
! 1031: {
! 1032: struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)];
! 1033: struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)];
! 1034: struct tty *tp = mp->mp_tty;
! 1035: int s;
! 1036:
! 1037: (*linesw[tp->t_line].l_close)(tp, flag);
! 1038: s = spltty();
! 1039:
! 1040: /*
! 1041: * If HUPCL is set, and the tty is no longer open,
! 1042: * shut down the port.
! 1043: */
! 1044: if (ISSET(tp->t_cflag, HUPCL) || !ISSET(tp->t_state, TS_ISOPEN)) {
! 1045: /* XXX wait until FIFO is empty before turning off the channel
! 1046: struct cd1400 *cd = mp->mp_cd1400;
! 1047: */
! 1048:
! 1049: /* drop DTR and RTS */
! 1050: (void)mtty_modem_control(mp, 0, DMSET);
! 1051:
! 1052: /* turn off the channel
! 1053: cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel);
! 1054: cd1400_write_ccr(cd, CD1400_CCR_CMDRESET);
! 1055: */
! 1056: }
! 1057:
! 1058: splx(s);
! 1059: ttyclose(tp);
! 1060:
! 1061: return (0);
! 1062: }
! 1063:
! 1064: /*
! 1065: * Read routine
! 1066: */
! 1067: int
! 1068: mttyread(dev, uio, flags)
! 1069: dev_t dev;
! 1070: struct uio *uio;
! 1071: int flags;
! 1072: {
! 1073: struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)];
! 1074: struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)];
! 1075: struct tty *tp = mp->mp_tty;
! 1076:
! 1077: return ((*linesw[tp->t_line].l_read)(tp, uio, flags));
! 1078: }
! 1079:
! 1080: /*
! 1081: * Write routine
! 1082: */
! 1083: int
! 1084: mttywrite(dev, uio, flags)
! 1085: dev_t dev;
! 1086: struct uio *uio;
! 1087: int flags;
! 1088: {
! 1089: struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)];
! 1090: struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)];
! 1091: struct tty *tp = mp->mp_tty;
! 1092:
! 1093: return ((*linesw[tp->t_line].l_write)(tp, uio, flags));
! 1094: }
! 1095:
! 1096: /*
! 1097: * return tty pointer
! 1098: */
! 1099: struct tty *
! 1100: mttytty(dev)
! 1101: dev_t dev;
! 1102: {
! 1103: struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)];
! 1104: struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)];
! 1105:
! 1106: return (mp->mp_tty);
! 1107: }
! 1108:
! 1109: /*
! 1110: * ioctl routine
! 1111: */
! 1112: int
! 1113: mttyioctl(dev, cmd, data, flags, p)
! 1114: dev_t dev;
! 1115: u_long cmd;
! 1116: caddr_t data;
! 1117: int flags;
! 1118: struct proc *p;
! 1119: {
! 1120: struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)];
! 1121: struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)];
! 1122: struct tty *tp = mp->mp_tty;
! 1123: int error;
! 1124:
! 1125: error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flags, p);
! 1126: if (error >= 0)
! 1127: return (error);
! 1128:
! 1129: error = ttioctl(tp, cmd, data, flags, p);
! 1130: if (error >= 0)
! 1131: return (error);
! 1132:
! 1133: error = 0;
! 1134:
! 1135: switch(cmd) {
! 1136: case TIOCSBRK: /* set break */
! 1137: SET(mp->mp_flags, MTTYF_SET_BREAK);
! 1138: cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel);
! 1139: break;
! 1140:
! 1141: case TIOCCBRK: /* clear break */
! 1142: SET(mp->mp_flags, MTTYF_CLR_BREAK);
! 1143: cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel);
! 1144: break;
! 1145:
! 1146: case TIOCSDTR: /* set DTR */
! 1147: mtty_modem_control(mp, TIOCM_DTR, DMBIS);
! 1148: break;
! 1149:
! 1150: case TIOCCDTR: /* clear DTR */
! 1151: mtty_modem_control(mp, TIOCM_DTR, DMBIC);
! 1152: break;
! 1153:
! 1154: case TIOCMSET: /* set modem lines */
! 1155: mtty_modem_control(mp, *((int *)data), DMSET);
! 1156: break;
! 1157:
! 1158: case TIOCMBIS: /* bit set modem lines */
! 1159: mtty_modem_control(mp, *((int *)data), DMBIS);
! 1160: break;
! 1161:
! 1162: case TIOCMBIC: /* bit clear modem lines */
! 1163: mtty_modem_control(mp, *((int *)data), DMBIC);
! 1164: break;
! 1165:
! 1166: case TIOCMGET: /* get modem lines */
! 1167: *((int *)data) = mtty_modem_control(mp, 0, DMGET);
! 1168: break;
! 1169:
! 1170: case TIOCGFLAGS:
! 1171: *((int *)data) = mp->mp_openflags;
! 1172: break;
! 1173:
! 1174: case TIOCSFLAGS:
! 1175: if (suser(p, 0))
! 1176: error = EPERM;
! 1177: else
! 1178: mp->mp_openflags = *((int *)data) &
! 1179: (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL |
! 1180: TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF);
! 1181: break;
! 1182:
! 1183: default:
! 1184: error = ENOTTY;
! 1185: }
! 1186:
! 1187: return (error);
! 1188: }
! 1189:
! 1190: /*
! 1191: * Stop output, e.g., for ^S or output flush.
! 1192: */
! 1193: int
! 1194: mttystop(tp, flags)
! 1195: struct tty *tp;
! 1196: int flags;
! 1197: {
! 1198: struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(tp->t_dev)];
! 1199: struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)];
! 1200: int s;
! 1201:
! 1202: s = spltty();
! 1203:
! 1204: if (ISSET(tp->t_state, TS_BUSY)) {
! 1205: if (!ISSET(tp->t_state, TS_TTSTOP))
! 1206: SET(tp->t_state, TS_FLUSH);
! 1207:
! 1208: /*
! 1209: * the transmit interrupt routine will disable transmit when it
! 1210: * notices that MTTYF_STOP has been set.
! 1211: */
! 1212: SET(mp->mp_flags, MTTYF_STOP);
! 1213: }
! 1214:
! 1215: splx(s);
! 1216: return (0);
! 1217: }
! 1218:
! 1219: /*
! 1220: * Start output, after a stop.
! 1221: */
! 1222: void
! 1223: mtty_start(tp)
! 1224: struct tty *tp;
! 1225: {
! 1226: struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(tp->t_dev)];
! 1227: struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)];
! 1228: int s;
! 1229:
! 1230: s = spltty();
! 1231:
! 1232: /*
! 1233: * We only need to do something if we are not already busy
! 1234: * or delaying or stopped.
! 1235: */
! 1236: if (!ISSET(tp->t_state, TS_TTSTOP | TS_TIMEOUT | TS_BUSY)) {
! 1237:
! 1238: /*
! 1239: * If we are sleeping and output has drained below
! 1240: * low water mark, awaken.
! 1241: */
! 1242: if (tp->t_outq.c_cc <= tp->t_lowat) {
! 1243: if (ISSET(tp->t_state, TS_ASLEEP)) {
! 1244: CLR(tp->t_state, TS_ASLEEP);
! 1245: wakeup(&tp->t_outq);
! 1246: }
! 1247:
! 1248: selwakeup(&tp->t_wsel);
! 1249: }
! 1250:
! 1251: /*
! 1252: * If there is something to send, start transmitting.
! 1253: */
! 1254: if (tp->t_outq.c_cc) {
! 1255: mp->mp_txc = ndqb(&tp->t_outq, 0);
! 1256: mp->mp_txp = tp->t_outq.c_cf;
! 1257: SET(tp->t_state, TS_BUSY);
! 1258: cd1400_enable_transmitter(mp->mp_cd1400,
! 1259: mp->mp_channel);
! 1260: }
! 1261: }
! 1262:
! 1263: splx(s);
! 1264: }
! 1265:
! 1266: /*
! 1267: * set/get modem line status
! 1268: *
! 1269: * bits can be: TIOCM_DTR, TIOCM_RTS, TIOCM_CTS, TIOCM_CD, TIOCM_RI, TIOCM_DSR
! 1270: *
! 1271: * note that DTR and RTS lines are exchanged, and that DSR is
! 1272: * not available on the LC2+1Sp card (used as CD)
! 1273: *
! 1274: * only let them fiddle with RTS if CRTSCTS is not enabled
! 1275: */
! 1276: int
! 1277: mtty_modem_control(mp, bits, howto)
! 1278: struct mtty_port *mp;
! 1279: int bits;
! 1280: int howto;
! 1281: {
! 1282: struct cd1400 *cd = mp->mp_cd1400;
! 1283: struct tty *tp = mp->mp_tty;
! 1284: int s, msvr;
! 1285:
! 1286: s = spltty();
! 1287:
! 1288: cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel);
! 1289:
! 1290: switch(howto) {
! 1291: case DMGET: /* get bits */
! 1292: bits = 0;
! 1293:
! 1294: bits |= TIOCM_LE;
! 1295:
! 1296: msvr = cd1400_read_reg(cd, CD1400_MSVR1);
! 1297: if (msvr & CD1400_MSVR1_RTS)
! 1298: bits |= TIOCM_DTR;
! 1299:
! 1300: msvr = cd1400_read_reg(cd, CD1400_MSVR2);
! 1301: if (msvr & CD1400_MSVR2_DTR)
! 1302: bits |= TIOCM_RTS;
! 1303: if (msvr & CD1400_MSVR2_CTS)
! 1304: bits |= TIOCM_CTS;
! 1305: if (msvr & CD1400_MSVR2_RI)
! 1306: bits |= TIOCM_RI;
! 1307: if (msvr & CD1400_MSVR2_DSR)
! 1308: bits |= (cd->cd_parmode ? TIOCM_CD : TIOCM_DSR);
! 1309: if (msvr & CD1400_MSVR2_CD)
! 1310: bits |= (cd->cd_parmode ? 0 : TIOCM_CD);
! 1311:
! 1312: break;
! 1313:
! 1314: case DMSET: /* reset bits */
! 1315: if (!ISSET(tp->t_cflag, CRTSCTS))
! 1316: cd1400_write_reg(cd, CD1400_MSVR2,
! 1317: ((bits & TIOCM_RTS) ? CD1400_MSVR2_DTR : 0));
! 1318:
! 1319: cd1400_write_reg(cd, CD1400_MSVR1,
! 1320: ((bits & TIOCM_DTR) ? CD1400_MSVR1_RTS : 0));
! 1321:
! 1322: break;
! 1323:
! 1324: case DMBIS: /* set bits */
! 1325: if ((bits & TIOCM_RTS) && !ISSET(tp->t_cflag, CRTSCTS))
! 1326: cd1400_write_reg(cd, CD1400_MSVR2, CD1400_MSVR2_DTR);
! 1327:
! 1328: if (bits & TIOCM_DTR)
! 1329: cd1400_write_reg(cd, CD1400_MSVR1, CD1400_MSVR1_RTS);
! 1330:
! 1331: break;
! 1332:
! 1333: case DMBIC: /* clear bits */
! 1334: if ((bits & TIOCM_RTS) && !ISSET(tp->t_cflag, CRTSCTS))
! 1335: cd1400_write_reg(cd, CD1400_MSVR2, 0);
! 1336:
! 1337: if (bits & TIOCM_DTR)
! 1338: cd1400_write_reg(cd, CD1400_MSVR1, 0);
! 1339:
! 1340: break;
! 1341: }
! 1342:
! 1343: splx(s);
! 1344: return (bits);
! 1345: }
! 1346:
! 1347: /*
! 1348: * Set tty parameters, returns error or 0 on success
! 1349: */
! 1350: int
! 1351: mtty_param(tp, t)
! 1352: struct tty *tp;
! 1353: struct termios *t;
! 1354: {
! 1355: struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(tp->t_dev)];
! 1356: struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)];
! 1357: struct cd1400 *cd = mp->mp_cd1400;
! 1358: int rbpr, tbpr, rcor, tcor;
! 1359: u_char mcor1 = 0, mcor2 = 0;
! 1360: int s, opt;
! 1361:
! 1362: if (t->c_ospeed &&
! 1363: cd1400_compute_baud(t->c_ospeed, cd->cd_clock, &tcor, &tbpr))
! 1364: return (EINVAL);
! 1365:
! 1366: if (t->c_ispeed &&
! 1367: cd1400_compute_baud(t->c_ispeed, cd->cd_clock, &rcor, &rbpr))
! 1368: return (EINVAL);
! 1369:
! 1370: s = spltty();
! 1371:
! 1372: /* hang up the line if ospeed is zero, else raise DTR */
! 1373: (void)mtty_modem_control(mp, TIOCM_DTR,
! 1374: (t->c_ospeed == 0 ? DMBIC : DMBIS));
! 1375:
! 1376: /* select channel, done in mtty_modem_control() */
! 1377: /* cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); */
! 1378:
! 1379: /* set transmit speed */
! 1380: if (t->c_ospeed) {
! 1381: cd1400_write_reg(cd, CD1400_TCOR, tcor);
! 1382: cd1400_write_reg(cd, CD1400_TBPR, tbpr);
! 1383: }
! 1384:
! 1385: /* set receive speed */
! 1386: if (t->c_ispeed) {
! 1387: cd1400_write_reg(cd, CD1400_RCOR, rcor);
! 1388: cd1400_write_reg(cd, CD1400_RBPR, rbpr);
! 1389: }
! 1390:
! 1391: /* enable transmitting and receiving on this channel */
! 1392: opt = CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTEN | CD1400_CCR_RCVEN;
! 1393: cd1400_write_ccr(cd, opt);
! 1394:
! 1395: /* set parity, data and stop bits */
! 1396: opt = 0;
! 1397: if (ISSET(t->c_cflag, PARENB))
! 1398: opt |= (ISSET(t->c_cflag, PARODD) ?
! 1399: CD1400_COR1_PARODD : CD1400_COR1_PARNORMAL);
! 1400:
! 1401: if (!ISSET(t->c_iflag, INPCK))
! 1402: opt |= CD1400_COR1_NOINPCK; /* no parity checking */
! 1403:
! 1404: if (ISSET(t->c_cflag, CSTOPB))
! 1405: opt |= CD1400_COR1_STOP2;
! 1406:
! 1407: switch (t->c_cflag & CSIZE) {
! 1408: case CS5:
! 1409: opt |= CD1400_COR1_CS5;
! 1410: break;
! 1411:
! 1412: case CS6:
! 1413: opt |= CD1400_COR1_CS6;
! 1414: break;
! 1415:
! 1416: case CS7:
! 1417: opt |= CD1400_COR1_CS7;
! 1418: break;
! 1419:
! 1420: default:
! 1421: opt |= CD1400_COR1_CS8;
! 1422: break;
! 1423: }
! 1424:
! 1425: cd1400_write_reg(cd, CD1400_COR1, opt);
! 1426:
! 1427: /*
! 1428: * enable Embedded Transmit Commands (for breaks)
! 1429: * use the CD1400 automatic CTS flow control if CRTSCTS is set
! 1430: */
! 1431: opt = CD1400_COR2_ETC;
! 1432: if (ISSET(t->c_cflag, CRTSCTS))
! 1433: opt |= CD1400_COR2_CCTS_OFLOW;
! 1434: cd1400_write_reg(cd, CD1400_COR2, opt);
! 1435:
! 1436: cd1400_write_reg(cd, CD1400_COR3, MTTY_RX_FIFO_THRESHOLD);
! 1437:
! 1438: cd1400_write_ccr(cd, CD1400_CCR_CMDCORCHG | CD1400_CCR_COR1 |
! 1439: CD1400_CCR_COR2 | CD1400_CCR_COR3);
! 1440:
! 1441: cd1400_write_reg(cd, CD1400_COR4, CD1400_COR4_PFO_EXCEPTION);
! 1442: cd1400_write_reg(cd, CD1400_COR5, 0);
! 1443:
! 1444: /*
! 1445: * if automatic RTS handshaking enabled, set DTR threshold
! 1446: * (RTS and DTR lines are switched, CD1400 thinks its DTR)
! 1447: */
! 1448: if (ISSET(t->c_cflag, CRTSCTS))
! 1449: mcor1 = MTTY_RX_DTR_THRESHOLD;
! 1450:
! 1451: /* set up `carrier detect' interrupts */
! 1452: if (cd->cd_parmode) {
! 1453: SET(mcor1, CD1400_MCOR1_DSRzd);
! 1454: SET(mcor2, CD1400_MCOR2_DSRod);
! 1455: } else {
! 1456: SET(mcor1, CD1400_MCOR1_CDzd);
! 1457: SET(mcor2, CD1400_MCOR2_CDod);
! 1458: }
! 1459:
! 1460: cd1400_write_reg(cd, CD1400_MCOR1, mcor1);
! 1461: cd1400_write_reg(cd, CD1400_MCOR2, mcor2);
! 1462:
! 1463: /* receive timeout 2ms */
! 1464: cd1400_write_reg(cd, CD1400_RTPR, 2);
! 1465:
! 1466: splx(s);
! 1467: return (0);
! 1468: }
! 1469:
! 1470: /************************************************************************
! 1471: *
! 1472: * MBPP Routines
! 1473: *
! 1474: * mbpp_match match one mbpp device
! 1475: * mbpp_attach attach mbpp devices
! 1476: * mbppopen open mbpp device
! 1477: * mbppclose close mbpp device
! 1478: * mbppread read from mbpp
! 1479: * mbppwrite write to mbpp
! 1480: * mbppioctl do ioctl on mbpp
! 1481: * mbpppoll do poll on mbpp
! 1482: * mbpp_rw general rw routine
! 1483: * mbpp_timeout rw timeout
! 1484: * mbpp_start rw start after delay
! 1485: * mbpp_send send data
! 1486: * mbpp_recv recv data
! 1487: */
! 1488:
! 1489: int
! 1490: mbpp_match(parent, vcf, args)
! 1491: struct device *parent;
! 1492: void *vcf, *args;
! 1493: {
! 1494: register struct magma_softc *sc = (struct magma_softc *)parent;
! 1495:
! 1496: return (args == mbpp_match && sc->ms_board->mb_npar &&
! 1497: sc->ms_mbpp == NULL);
! 1498: }
! 1499:
! 1500: void
! 1501: mbpp_attach(parent, dev, args)
! 1502: struct device *parent;
! 1503: struct device *dev;
! 1504: void *args;
! 1505: {
! 1506: struct magma_softc *sc = (struct magma_softc *)parent;
! 1507: struct mbpp_softc *ms = (struct mbpp_softc *)dev;
! 1508: struct mbpp_port *mp;
! 1509: int port;
! 1510:
! 1511: sc->ms_mbpp = ms;
! 1512: dprintf((" addr 0x%x", ms));
! 1513:
! 1514: for (port = 0 ; port < sc->ms_board->mb_npar ; port++) {
! 1515: mp = &ms->ms_port[port];
! 1516:
! 1517: if (sc->ms_ncd1190)
! 1518: mp->mp_cd1190 = &sc->ms_cd1190[port];
! 1519: else
! 1520: mp->mp_cd1400 = &sc->ms_cd1400[0];
! 1521:
! 1522: timeout_set(&mp->mp_timeout_tmo, mbpp_timeout, mp);
! 1523: timeout_set(&mp->mp_start_tmo, mbpp_start, mp);
! 1524: }
! 1525:
! 1526: ms->ms_nports = port;
! 1527: printf(": %d port%s\n", port, port == 1 ? "" : "s");
! 1528: }
! 1529:
! 1530: /*
! 1531: * open routine. returns zero if successful, else error code
! 1532: */
! 1533: int
! 1534: mbppopen(dev, flags, mode, p)
! 1535: dev_t dev;
! 1536: int flags;
! 1537: int mode;
! 1538: struct proc *p;
! 1539: {
! 1540: int card = MAGMA_CARD(dev);
! 1541: int port = MAGMA_PORT(dev);
! 1542: struct mbpp_softc *ms;
! 1543: struct mbpp_port *mp;
! 1544: int s;
! 1545:
! 1546: if (card >= mbpp_cd.cd_ndevs || (ms = mbpp_cd.cd_devs[card]) == NULL ||
! 1547: port >= ms->ms_nports)
! 1548: return (ENXIO);
! 1549:
! 1550: mp = &ms->ms_port[port];
! 1551:
! 1552: s = spltty();
! 1553: if (ISSET(mp->mp_flags, MBPPF_OPEN)) {
! 1554: splx(s);
! 1555: return (EBUSY);
! 1556: }
! 1557: SET(mp->mp_flags, MBPPF_OPEN);
! 1558: splx(s);
! 1559:
! 1560: /* set defaults */
! 1561: mp->mp_burst = BPP_BURST;
! 1562: mp->mp_timeout = mbpp_mstohz(BPP_TIMEOUT);
! 1563: mp->mp_delay = mbpp_mstohz(BPP_DELAY);
! 1564:
! 1565: /* init chips */
! 1566: if (mp->mp_cd1400) { /* CD1400 */
! 1567: struct cd1400 *cd = mp->mp_cd1400;
! 1568:
! 1569: /* set up CD1400 channel */
! 1570: s = spltty();
! 1571: cd1400_write_reg(cd, CD1400_CAR, 0);
! 1572: cd1400_write_ccr(cd, CD1400_CCR_CMDRESET);
! 1573: cd1400_write_reg(cd, CD1400_LIVR, (1 << 3));
! 1574: splx(s);
! 1575: } else { /* CD1190 */
! 1576: mp->mp_flags = 0;
! 1577: return (ENXIO);
! 1578: }
! 1579:
! 1580: return (0);
! 1581: }
! 1582:
! 1583: /*
! 1584: * close routine. returns zero if successful, else error code
! 1585: */
! 1586: int
! 1587: mbppclose(dev, flag, mode, p)
! 1588: dev_t dev;
! 1589: int flag;
! 1590: int mode;
! 1591: struct proc *p;
! 1592: {
! 1593: struct mbpp_softc *ms = mbpp_cd.cd_devs[MAGMA_CARD(dev)];
! 1594: struct mbpp_port *mp = &ms->ms_port[MAGMA_PORT(dev)];
! 1595:
! 1596: mp->mp_flags = 0;
! 1597: return (0);
! 1598: }
! 1599:
! 1600: /*
! 1601: * Read routine
! 1602: */
! 1603: int
! 1604: mbppread(dev, uio, flags)
! 1605: dev_t dev;
! 1606: struct uio *uio;
! 1607: int flags;
! 1608: {
! 1609: return (mbpp_rw(dev, uio));
! 1610: }
! 1611:
! 1612: /*
! 1613: * Write routine
! 1614: */
! 1615: int
! 1616: mbppwrite(dev, uio, flags)
! 1617: dev_t dev;
! 1618: struct uio *uio;
! 1619: int flags;
! 1620: {
! 1621: return (mbpp_rw(dev, uio));
! 1622: }
! 1623:
! 1624: /*
! 1625: * ioctl routine
! 1626: */
! 1627: int
! 1628: mbppioctl(dev, cmd, data, flags, p)
! 1629: dev_t dev;
! 1630: u_long cmd;
! 1631: caddr_t data;
! 1632: int flags;
! 1633: struct proc *p;
! 1634: {
! 1635: struct mbpp_softc *ms = mbpp_cd.cd_devs[MAGMA_CARD(dev)];
! 1636: register struct mbpp_port *mp = &ms->ms_port[MAGMA_PORT(dev)];
! 1637: struct bpp_param *bp;
! 1638: int error = 0;
! 1639: int s;
! 1640:
! 1641: switch(cmd) {
! 1642: case BPPIOCSPARAM:
! 1643: bp = (struct bpp_param *)data;
! 1644: if (bp->bp_burst < BPP_BURST_MIN ||
! 1645: bp->bp_burst > BPP_BURST_MAX ||
! 1646: bp->bp_delay < BPP_DELAY_MIN ||
! 1647: bp->bp_delay > BPP_DELAY_MIN) {
! 1648: error = EINVAL;
! 1649: } else {
! 1650: mp->mp_burst = bp->bp_burst;
! 1651: mp->mp_timeout = mbpp_mstohz(bp->bp_timeout);
! 1652: mp->mp_delay = mbpp_mstohz(bp->bp_delay);
! 1653: }
! 1654: break;
! 1655: case BPPIOCGPARAM:
! 1656: bp = (struct bpp_param *)data;
! 1657: bp->bp_burst = mp->mp_burst;
! 1658: bp->bp_timeout = mbpp_hztoms(mp->mp_timeout);
! 1659: bp->bp_delay = mbpp_hztoms(mp->mp_delay);
! 1660: break;
! 1661: case BPPIOCGSTAT:
! 1662: /* XXX make this more generic */
! 1663: s = spltty();
! 1664: cd1400_write_reg(mp->mp_cd1400, CD1400_CAR, 0);
! 1665: *(int *)data = cd1400_read_reg(mp->mp_cd1400, CD1400_PSVR);
! 1666: splx(s);
! 1667: break;
! 1668: default:
! 1669: error = ENOTTY;
! 1670: }
! 1671:
! 1672: return (error);
! 1673: }
! 1674:
! 1675: /*
! 1676: * poll routine
! 1677: */
! 1678: int
! 1679: mbpppoll(dev, events, p)
! 1680: dev_t dev;
! 1681: int events;
! 1682: struct proc *p;
! 1683: {
! 1684: return (seltrue(dev, events, p));
! 1685: }
! 1686:
! 1687: int
! 1688: mbpp_rw(dev, uio)
! 1689: dev_t dev;
! 1690: struct uio *uio;
! 1691: {
! 1692: int card = MAGMA_CARD(dev);
! 1693: int port = MAGMA_PORT(dev);
! 1694: struct mbpp_softc *ms = mbpp_cd.cd_devs[card];
! 1695: register struct mbpp_port *mp = &ms->ms_port[port];
! 1696: caddr_t buffer, ptr;
! 1697: int buflen, cnt, len;
! 1698: int s, error = 0;
! 1699: int gotdata = 0;
! 1700:
! 1701: if (uio->uio_resid == 0)
! 1702: return (0);
! 1703:
! 1704: buflen = min(uio->uio_resid, mp->mp_burst);
! 1705: buffer = malloc(buflen, M_DEVBUF, M_WAITOK);
! 1706:
! 1707: SET(mp->mp_flags, MBPPF_UIO);
! 1708:
! 1709: /*
! 1710: * start timeout, if needed
! 1711: */
! 1712: if (mp->mp_timeout > 0) {
! 1713: SET(mp->mp_flags, MBPPF_TIMEOUT);
! 1714: timeout_add(&mp->mp_timeout_tmo, mp->mp_timeout);
! 1715: }
! 1716:
! 1717: len = cnt = 0;
! 1718: while (uio->uio_resid > 0) {
! 1719: len = min(buflen, uio->uio_resid);
! 1720: ptr = buffer;
! 1721:
! 1722: if (uio->uio_rw == UIO_WRITE) {
! 1723: error = uiomove(ptr, len, uio);
! 1724: if (error)
! 1725: break;
! 1726: }
! 1727: again: /* goto bad */
! 1728: /* timed out? */
! 1729: if (!ISSET(mp->mp_flags, MBPPF_UIO))
! 1730: break;
! 1731:
! 1732: /*
! 1733: * perform the operation
! 1734: */
! 1735: if (uio->uio_rw == UIO_WRITE) {
! 1736: cnt = mbpp_send(mp, ptr, len);
! 1737: } else {
! 1738: cnt = mbpp_recv(mp, ptr, len);
! 1739: }
! 1740:
! 1741: if (uio->uio_rw == UIO_READ) {
! 1742: if (cnt) {
! 1743: error = uiomove(ptr, cnt, uio);
! 1744: if (error)
! 1745: break;
! 1746: gotdata++;
! 1747: }
! 1748: else if (gotdata) /* consider us done */
! 1749: break;
! 1750: }
! 1751:
! 1752: /* timed out? */
! 1753: if (!ISSET(mp->mp_flags, MBPPF_UIO))
! 1754: break;
! 1755:
! 1756: /*
! 1757: * poll delay?
! 1758: */
! 1759: if (mp->mp_delay > 0) {
! 1760: s = spltty(); /* XXX */
! 1761: SET(mp->mp_flags, MBPPF_DELAY);
! 1762: timeout_add(&mp->mp_start_tmo, mp->mp_delay);
! 1763: error = tsleep(mp, PCATCH | PZERO, "mbppdelay", 0);
! 1764: splx(s);
! 1765: if (error)
! 1766: break;
! 1767: }
! 1768:
! 1769: /*
! 1770: * Don't call uiomove again until we used all the data we
! 1771: * grabbed.
! 1772: */
! 1773: if (uio->uio_rw == UIO_WRITE && cnt != len) {
! 1774: ptr += cnt;
! 1775: len -= cnt;
! 1776: cnt = 0;
! 1777: goto again;
! 1778: }
! 1779: }
! 1780:
! 1781: /*
! 1782: * clear timeouts
! 1783: */
! 1784: s = spltty(); /* XXX */
! 1785: if (ISSET(mp->mp_flags, MBPPF_TIMEOUT)) {
! 1786: timeout_del(&mp->mp_timeout_tmo);
! 1787: CLR(mp->mp_flags, MBPPF_TIMEOUT);
! 1788: }
! 1789: if (ISSET(mp->mp_flags, MBPPF_DELAY)) {
! 1790: timeout_del(&mp->mp_start_tmo);
! 1791: CLR(mp->mp_flags, MBPPF_DELAY);
! 1792: }
! 1793: splx(s);
! 1794:
! 1795: /*
! 1796: * Adjust for those chars that we uiomoved but never actually wrote.
! 1797: */
! 1798: if (uio->uio_rw == UIO_WRITE && cnt != len) {
! 1799: uio->uio_resid += (len - cnt);
! 1800: }
! 1801:
! 1802: free(buffer, M_DEVBUF);
! 1803: return (error);
! 1804: }
! 1805:
! 1806: void
! 1807: mbpp_timeout(arg)
! 1808: void *arg;
! 1809: {
! 1810: struct mbpp_port *mp = arg;
! 1811:
! 1812: CLR(mp->mp_flags, MBPPF_UIO | MBPPF_TIMEOUT);
! 1813: wakeup(mp);
! 1814: }
! 1815:
! 1816: void
! 1817: mbpp_start(arg)
! 1818: void *arg;
! 1819: {
! 1820: struct mbpp_port *mp = arg;
! 1821:
! 1822: CLR(mp->mp_flags, MBPPF_DELAY);
! 1823: wakeup(mp);
! 1824: }
! 1825:
! 1826: int
! 1827: mbpp_send(mp, ptr, len)
! 1828: struct mbpp_port *mp;
! 1829: caddr_t ptr;
! 1830: int len;
! 1831: {
! 1832: int s;
! 1833: struct cd1400 *cd = mp->mp_cd1400;
! 1834:
! 1835: /* set up io information */
! 1836: mp->mp_ptr = ptr;
! 1837: mp->mp_cnt = len;
! 1838:
! 1839: /* start transmitting */
! 1840: s = spltty();
! 1841: if (cd) {
! 1842: cd1400_write_reg(cd, CD1400_CAR, 0);
! 1843:
! 1844: /* output strobe width ~1microsecond */
! 1845: cd1400_write_reg(cd, CD1400_TBPR, 10);
! 1846:
! 1847: /* enable channel */
! 1848: cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTEN);
! 1849: cd1400_write_reg(cd, CD1400_SRER, CD1400_SRER_TXRDY);
! 1850: }
! 1851:
! 1852: /* zzz... */
! 1853: tsleep(mp, PCATCH | PZERO, "mbpp_send", 0);
! 1854:
! 1855: /* stop transmitting */
! 1856: if (cd) {
! 1857: cd1400_write_reg(cd, CD1400_CAR, 0);
! 1858:
! 1859: /* disable transmitter */
! 1860: cd1400_write_reg(cd, CD1400_SRER, 0);
! 1861: cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTDIS);
! 1862:
! 1863: /* flush fifo */
! 1864: cd1400_write_ccr(cd, CD1400_CCR_CMDRESET | CD1400_CCR_FTF);
! 1865: }
! 1866: splx(s);
! 1867:
! 1868: /* return number of chars sent */
! 1869: return (len - mp->mp_cnt);
! 1870: }
! 1871:
! 1872: int
! 1873: mbpp_recv(mp, ptr, len)
! 1874: struct mbpp_port *mp;
! 1875: caddr_t ptr;
! 1876: int len;
! 1877: {
! 1878: int s;
! 1879: struct cd1400 *cd = mp->mp_cd1400;
! 1880:
! 1881: /* set up io information */
! 1882: mp->mp_ptr = ptr;
! 1883: mp->mp_cnt = len;
! 1884:
! 1885: /* start receiving */
! 1886: s = spltty();
! 1887: if (cd) {
! 1888: int rcor, rbpr;
! 1889:
! 1890: cd1400_write_reg(cd, CD1400_CAR, 0);
! 1891:
! 1892: /* input strobe at 100kbaud (10microseconds) */
! 1893: cd1400_compute_baud(100000, cd->cd_clock, &rcor, &rbpr);
! 1894: cd1400_write_reg(cd, CD1400_RCOR, rcor);
! 1895: cd1400_write_reg(cd, CD1400_RBPR, rbpr);
! 1896:
! 1897: /* rx threshold */
! 1898: cd1400_write_reg(cd, CD1400_COR3, MBPP_RX_FIFO_THRESHOLD);
! 1899: cd1400_write_ccr(cd, CD1400_CCR_CMDCORCHG | CD1400_CCR_COR3);
! 1900:
! 1901: /* enable channel */
! 1902: cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_RCVEN);
! 1903: cd1400_write_reg(cd, CD1400_SRER, CD1400_SRER_RXDATA);
! 1904: }
! 1905:
! 1906: /* zzz... */
! 1907: tsleep(mp, PCATCH | PZERO, "mbpp_recv", 0);
! 1908:
! 1909: /* stop receiving */
! 1910: if (cd) {
! 1911: cd1400_write_reg(cd, CD1400_CAR, 0);
! 1912:
! 1913: /* disable receiving */
! 1914: cd1400_write_reg(cd, CD1400_SRER, 0);
! 1915: cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_RCVDIS);
! 1916: }
! 1917: splx(s);
! 1918:
! 1919: /* return number of chars received */
! 1920: return (len - mp->mp_cnt);
! 1921: }
! 1922:
! 1923: int
! 1924: mbpp_hztoms(h)
! 1925: int h;
! 1926: {
! 1927: int m = h;
! 1928:
! 1929: if (m > 0)
! 1930: m = m * 1000 / hz;
! 1931: return (m);
! 1932: }
! 1933:
! 1934: int
! 1935: mbpp_mstohz(m)
! 1936: int m;
! 1937: {
! 1938: int h = m;
! 1939:
! 1940: if (h > 0) {
! 1941: h = h * hz / 1000;
! 1942: if (h == 0)
! 1943: h = 1000 / hz;
! 1944: }
! 1945: return (h);
! 1946: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to magma.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / sparc / dev