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sys/dev/sbus/magma.c
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1 /* $NetBSD: magma.c,v 1.28 2004/03/17 17:04:58 pk 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 <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: magma.c,v 1.28 2004/03/17 17:04:58 pk Exp $"); 42 43 #if 0 44 #define MAGMA_DEBUG 45 #endif 46 47 #include "magma.h" 48 #if NMAGMA > 0 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/proc.h> 53 #include <sys/device.h> 54 #include <sys/file.h> 55 #include <sys/ioctl.h> 56 #include <sys/malloc.h> 57 #include <sys/tty.h> 58 #include <sys/time.h> 59 #include <sys/kernel.h> 60 #include <sys/syslog.h> 61 #include <sys/conf.h> 62 #include <sys/errno.h> 63 64 #include <machine/bus.h> 65 #include <machine/intr.h> 66 #include <machine/autoconf.h> 67 68 #include <dev/sbus/sbusvar.h> 69 70 #include <dev/ic/cd1400reg.h> 71 #include <dev/ic/cd1190reg.h> 72 73 #include <dev/sbus/mbppio.h> 74 #include <dev/sbus/magmareg.h> 75 76 /* supported cards 77 * 78 * The table below lists the cards that this driver is likely to 79 * be able to support. 80 * 81 * Cards with parallel ports: except for the LC2+1Sp, they all use 82 * the CD1190 chip which I know nothing about. I've tried to leave 83 * hooks for it so it shouldn't be too hard to add support later. 84 * (I think somebody is working on this separately) 85 * 86 * Thanks to Bruce at Magma for telling me the hardware offsets. 87 */ 88 static struct magma_board_info supported_cards[] = { 89 { 90 "MAGMA_Sp", "MAGMA,4_Sp", "Magma 4 Sp", 4, 0, 91 1, 0xa000, 0xc000, 0xe000, { 0x8000, 0, 0, 0 }, 92 0, { 0, 0 } 93 }, 94 { 95 "MAGMA_Sp", "MAGMA,8_Sp", "Magma 8 Sp", 8, 0, 96 2, 0xa000, 0xc000, 0xe000, { 0x4000, 0x6000, 0, 0 }, 97 0, { 0, 0 } 98 }, 99 { 100 "MAGMA_Sp", "MAGMA,_8HS_Sp", "Magma Fast 8 Sp", 8, 0, 101 2, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0, 0 }, 102 0, { 0, 0 } 103 }, 104 { 105 "MAGMA_Sp", "MAGMA,_8SP_422", "Magma 8 Sp - 422", 8, 0, 106 2, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0, 0 }, 107 0, { 0, 0 } 108 }, 109 { 110 "MAGMA_Sp", "MAGMA,12_Sp", "Magma 12 Sp", 12, 0, 111 3, 0xa000, 0xc000, 0xe000, { 0x2000, 0x4000, 0x6000, 0 }, 112 0, { 0, 0 } 113 }, 114 { 115 "MAGMA_Sp", "MAGMA,16_Sp", "Magma 16 Sp", 16, 0, 116 4, 0xd000, 0xe000, 0xf000, { 0x8000, 0x9000, 0xa000, 0xb000 }, 117 0, { 0, 0 } 118 }, 119 { 120 "MAGMA_Sp", "MAGMA,16_Sp_2", "Magma 16 Sp", 16, 0, 121 4, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0xc000, 0xe000 }, 122 0, { 0, 0 } 123 }, 124 { 125 "MAGMA_Sp", "MAGMA,16HS_Sp", "Magma Fast 16 Sp", 16, 0, 126 4, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0xc000, 0xe000 }, 127 0, { 0, 0 } 128 }, 129 { 130 "MAGMA_Sp", "MAGMA,21_Sp", "Magma LC 2+1 Sp", 2, 1, 131 1, 0xa000, 0xc000, 0xe000, { 0x8000, 0, 0, 0 }, 132 0, { 0, 0 } 133 }, 134 { 135 "MAGMA_Sp", "MAGMA,21HS_Sp", "Magma 2+1 Sp", 2, 1, 136 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 }, 137 1, { 0x6000, 0 } 138 }, 139 { 140 "MAGMA_Sp", "MAGMA,41_Sp", "Magma 4+1 Sp", 4, 1, 141 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 }, 142 1, { 0x6000, 0 } 143 }, 144 { 145 "MAGMA_Sp", "MAGMA,82_Sp", "Magma 8+2 Sp", 8, 2, 146 2, 0xd000, 0xe000, 0xf000, { 0x8000, 0x9000, 0, 0 }, 147 2, { 0xa000, 0xb000 } 148 }, 149 { 150 "MAGMA_Sp", "MAGMA,P1_Sp", "Magma P1 Sp", 0, 1, 151 0, 0, 0, 0, { 0, 0, 0, 0 }, 152 1, { 0x8000, 0 } 153 }, 154 { 155 "MAGMA_Sp", "MAGMA,P2_Sp", "Magma P2 Sp", 0, 2, 156 0, 0, 0, 0, { 0, 0, 0, 0 }, 157 2, { 0x4000, 0x8000 } 158 }, 159 { 160 "MAGMA 2+1HS Sp", "", "Magma 2+1HS Sp", 2, 0, 161 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 }, 162 1, { 0x8000, 0 } 163 }, 164 { 165 NULL, NULL, NULL, 0, 0, 166 0, 0, 0, 0, { 0, 0, 0, 0 }, 167 0, { 0, 0 } 168 } 169 }; 170 171 /************************************************************************ 172 * 173 * Autoconfig Stuff 174 */ 175 176 CFATTACH_DECL(magma, sizeof(struct magma_softc), 177 magma_match, magma_attach, NULL, NULL); 178 179 CFATTACH_DECL(mtty, sizeof(struct mtty_softc), 180 mtty_match, mtty_attach, NULL, NULL); 181 182 CFATTACH_DECL(mbpp, sizeof(struct mbpp_softc), 183 mbpp_match, mbpp_attach, NULL, NULL); 184 185 extern struct cfdriver mtty_cd; 186 extern struct cfdriver mbpp_cd; 187 188 dev_type_open(mttyopen); 189 dev_type_close(mttyclose); 190 dev_type_read(mttyread); 191 dev_type_write(mttywrite); 192 dev_type_ioctl(mttyioctl); 193 dev_type_stop(mttystop); 194 dev_type_tty(mttytty); 195 dev_type_poll(mttypoll); 196 197 const struct cdevsw mtty_cdevsw = { 198 mttyopen, mttyclose, mttyread, mttywrite, mttyioctl, 199 mttystop, mttytty, mttypoll, nommap, ttykqfilter, D_TTY 200 }; 201 202 dev_type_open(mbppopen); 203 dev_type_close(mbppclose); 204 dev_type_read(mbpp_rw); 205 dev_type_ioctl(mbppioctl); 206 207 const struct cdevsw mbpp_cdevsw = { 208 mbppopen, mbppclose, mbpp_rw, mbpp_rw, mbppioctl, 209 nostop, notty, nopoll, nommap, nokqfilter, 210 }; 211 212 /************************************************************************ 213 * 214 * CD1400 Routines 215 * 216 * cd1400_compute_baud calculate COR/BPR register values 217 * cd1400_write_ccr write a value to CD1400 ccr 218 * cd1400_read_reg read from a CD1400 register 219 * cd1400_write_reg write to a CD1400 register 220 * cd1400_enable_transmitter enable transmitting on CD1400 channel 221 */ 222 223 /* 224 * compute the bpr/cor pair for any baud rate 225 * returns 0 for success, 1 for failure 226 */ 227 int 228 cd1400_compute_baud(speed, clock, cor, bpr) 229 speed_t speed; 230 int clock; 231 int *cor, *bpr; 232 { 233 int c, co, br; 234 235 if( speed < 50 || speed > 150000 ) 236 return(1); 237 238 for( c = 0, co = 8 ; co <= 2048 ; co <<= 2, c++ ) { 239 br = ((clock * 1000000) + (co * speed) / 2) / (co * speed); 240 if( br < 0x100 ) { 241 *bpr = br; 242 *cor = c; 243 return(0); 244 } 245 } 246 247 return(1); 248 } 249 250 /* 251 * Write a CD1400 channel command, should have a timeout? 252 */ 253 __inline void 254 cd1400_write_ccr(cd, cmd) 255 struct cd1400 *cd; 256 u_char cmd; 257 { 258 while( cd1400_read_reg(cd, CD1400_CCR) ) 259 ; 260 261 cd1400_write_reg(cd, CD1400_CCR, cmd); 262 } 263 264 /* 265 * read a value from a cd1400 register 266 */ 267 __inline u_char 268 cd1400_read_reg(cd, reg) 269 struct cd1400 *cd; 270 int reg; 271 { 272 return(cd->cd_reg[reg]); 273 } 274 275 /* 276 * write a value to a cd1400 register 277 */ 278 __inline void 279 cd1400_write_reg(cd, reg, value) 280 struct cd1400 *cd; 281 int reg; 282 u_char value; 283 { 284 cd->cd_reg[reg] = value; 285 } 286 287 /* 288 * enable transmit service requests for cd1400 channel 289 */ 290 void 291 cd1400_enable_transmitter(cd, channel) 292 struct cd1400 *cd; 293 int channel; 294 { 295 int s, srer; 296 297 s = spltty(); 298 cd1400_write_reg(cd, CD1400_CAR, channel); 299 srer = cd1400_read_reg(cd, CD1400_SRER); 300 SET(srer, CD1400_SRER_TXRDY); 301 cd1400_write_reg(cd, CD1400_SRER, srer); 302 splx(s); 303 } 304 305 /************************************************************************ 306 * 307 * CD1190 Routines 308 */ 309 310 /* well, there are none yet */ 311 312 /************************************************************************ 313 * 314 * Magma Routines 315 * 316 * magma_match reports if we have a magma board available 317 * magma_attach attaches magma boards to the sbus 318 * magma_hard hardware level interrupt routine 319 * magma_soft software level interrupt routine 320 */ 321 322 int 323 magma_match(parent, cf, aux) 324 struct device *parent; 325 struct cfdata *cf; 326 void *aux; 327 { 328 struct sbus_attach_args *sa = aux; 329 struct magma_board_info *card; 330 331 /* See if we support this device */ 332 for (card = supported_cards; ; card++) { 333 if (card->mb_sbusname == NULL) 334 /* End of table: no match */ 335 return (0); 336 if (strcmp(sa->sa_name, card->mb_sbusname) == 0) 337 break; 338 } 339 340 dprintf(("magma: matched `%s'\n", sa->sa_name)); 341 dprintf(("magma: magma_prom `%s'\n", 342 prom_getpropstring(sa->sa_node, "magma_prom"))); 343 dprintf(("magma: intlevels `%s'\n", 344 prom_getpropstring(sa->sa_node, "intlevels"))); 345 dprintf(("magma: chiprev `%s'\n", 346 prom_getpropstring(sa->sa_node, "chiprev"))); 347 dprintf(("magma: clock `%s'\n", 348 prom_getpropstring(sa->sa_node, "clock"))); 349 350 return (1); 351 } 352 353 void 354 magma_attach(parent, self, aux) 355 struct device *parent; 356 struct device *self; 357 void *aux; 358 { 359 struct sbus_attach_args *sa = aux; 360 struct magma_softc *sc = (struct magma_softc *)self; 361 struct magma_board_info *card; 362 bus_space_handle_t bh; 363 char *magma_prom, *clockstr; 364 int cd_clock; 365 int node, chip; 366 367 node = sa->sa_node; 368 369 /* 370 * Find the card model. 371 * Older models all have sbus node name `MAGMA_Sp' (see 372 * `supported_cards[]' above), and must be distinguished 373 * by the `magma_prom' property. 374 */ 375 magma_prom = prom_getpropstring(node, "magma_prom"); 376 377 for (card = supported_cards; card->mb_name != NULL; card++) { 378 if (strcmp(sa->sa_name, card->mb_sbusname) != 0) 379 /* Sbus node name doesn't match */ 380 continue; 381 if (strcmp(magma_prom, card->mb_name) == 0) 382 /* Model name match */ 383 break; 384 } 385 386 if( card->mb_name == NULL ) { 387 printf(": %s (unsupported)\n", magma_prom); 388 return; 389 } 390 391 dprintf((" addr %p", sc)); 392 printf(": %s\n", card->mb_realname); 393 394 sc->ms_board = card; 395 sc->ms_ncd1400 = card->mb_ncd1400; 396 sc->ms_ncd1190 = card->mb_ncd1190; 397 398 if (sbus_bus_map(sa->sa_bustag, 399 sa->sa_slot, sa->sa_offset, sa->sa_size, 400 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 401 printf("%s @ sbus: cannot map registers\n", self->dv_xname); 402 return; 403 } 404 405 /* the SVCACK* lines are daisychained */ 406 sc->ms_svcackr = (caddr_t)bus_space_vaddr(sa->sa_bustag, bh) 407 + card->mb_svcackr; 408 sc->ms_svcackt = (caddr_t)bus_space_vaddr(sa->sa_bustag, bh) 409 + card->mb_svcackt; 410 sc->ms_svcackm = (caddr_t)bus_space_vaddr(sa->sa_bustag, bh) 411 + card->mb_svcackm; 412 413 /* 414 * Find the clock speed; it's the same for all CD1400 chips 415 * on the board. 416 */ 417 clockstr = prom_getpropstring(node, "clock"); 418 if (*clockstr == '\0') 419 /* Default to 25MHz */ 420 cd_clock = 25; 421 else { 422 cd_clock = 0; 423 while (*clockstr != '\0') 424 cd_clock = (cd_clock * 10) + (*clockstr++ - ''); 425 } 426 427 /* init the cd1400 chips */ 428 for( chip = 0 ; chip < card->mb_ncd1400 ; chip++ ) { 429 struct cd1400 *cd = &sc->ms_cd1400[chip]; 430 431 cd->cd_clock = cd_clock; 432 cd->cd_reg = (caddr_t)bh + card->mb_cd1400[chip]; 433 434 /* prom_getpropstring(node, "chiprev"); */ 435 /* seemingly the Magma drivers just ignore the propstring */ 436 cd->cd_chiprev = cd1400_read_reg(cd, CD1400_GFRCR); 437 438 dprintf(("%s attach CD1400 %d addr %p rev %x clock %dMHz\n", 439 sc->ms_dev.dv_xname, chip, 440 cd->cd_reg, cd->cd_chiprev, cd->cd_clock)); 441 442 /* clear GFRCR */ 443 cd1400_write_reg(cd, CD1400_GFRCR, 0x00); 444 445 /* reset whole chip */ 446 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET | CD1400_CCR_FULLRESET); 447 448 /* wait for revision code to be restored */ 449 while( cd1400_read_reg(cd, CD1400_GFRCR) != cd->cd_chiprev ) 450 ; 451 452 /* set the Prescaler Period Register to tick at 1ms */ 453 cd1400_write_reg(cd, CD1400_PPR, 454 ((cd->cd_clock * 1000000 / CD1400_PPR_PRESCALER + 500) / 1000)); 455 456 /* The LC2+1Sp card is the only card that doesn't have 457 * a CD1190 for the parallel port, but uses channel 0 of 458 * the CD1400, so we make a note of it for later and set up 459 * the CD1400 for parallel mode operation. 460 */ 461 if( card->mb_npar && card->mb_ncd1190 == 0 ) { 462 cd1400_write_reg(cd, CD1400_GCR, CD1400_GCR_PARALLEL); 463 cd->cd_parmode = 1; 464 } 465 } 466 467 /* init the cd1190 chips */ 468 for( chip = 0 ; chip < card->mb_ncd1190 ; chip++ ) { 469 struct cd1190 *cd = &sc->ms_cd1190[chip]; 470 471 cd->cd_reg = (caddr_t)bh + card->mb_cd1190[chip]; 472 473 /* XXX don't know anything about these chips yet */ 474 printf("%s: CD1190 %d addr %p (unsupported)\n", 475 self->dv_xname, chip, cd->cd_reg); 476 } 477 478 sbus_establish(&sc->ms_sd, &sc->ms_dev); 479 480 /* configure the children */ 481 (void)config_found(self, mtty_match, NULL); 482 (void)config_found(self, mbpp_match, NULL); 483 484 /* 485 * Establish the interrupt handlers. 486 */ 487 if (sa->sa_nintr == 0) 488 return; /* No interrupts to service!? */ 489 490 (void)bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_SERIAL, 491 magma_hard, sc); 492 sc->ms_sicookie = softintr_establish(IPL_SOFTSERIAL, magma_soft, sc); 493 if (sc->ms_sicookie == NULL) { 494 printf("\n%s: cannot establish soft int handler\n", 495 sc->ms_dev.dv_xname); 496 return; 497 } 498 evcnt_attach_dynamic(&sc->ms_intrcnt, EVCNT_TYPE_INTR, NULL, 499 sc->ms_dev.dv_xname, "intr"); 500 } 501 502 /* 503 * hard interrupt routine 504 * 505 * returns 1 if it handled it, otherwise 0 506 * 507 * runs at interrupt priority 508 */ 509 int 510 magma_hard(arg) 511 void *arg; 512 { 513 struct magma_softc *sc = arg; 514 struct cd1400 *cd; 515 int chip, status = 0; 516 int serviced = 0; 517 int needsoftint = 0; 518 519 /* 520 * check status of all the CD1400 chips 521 */ 522 for( chip = 0 ; chip < sc->ms_ncd1400 ; chip++ ) 523 status |= cd1400_read_reg(&sc->ms_cd1400[chip], CD1400_SVRR); 524 525 if( ISSET(status, CD1400_SVRR_RXRDY) ) { 526 u_char rivr = *sc->ms_svcackr; /* enter rx service context */ 527 int port = rivr >> 4; 528 529 if( rivr & (1<<3) ) { /* parallel port */ 530 struct mbpp_port *mbpp; 531 int n_chars; 532 533 mbpp = &sc->ms_mbpp->ms_port[port]; 534 cd = mbpp->mp_cd1400; 535 536 /* don't think we have to handle exceptions */ 537 n_chars = cd1400_read_reg(cd, CD1400_RDCR); 538 while (n_chars--) { 539 if( mbpp->mp_cnt == 0 ) { 540 SET(mbpp->mp_flags, MBPPF_WAKEUP); 541 needsoftint = 1; 542 break; 543 } 544 *mbpp->mp_ptr = cd1400_read_reg(cd,CD1400_RDSR); 545 mbpp->mp_ptr++; 546 mbpp->mp_cnt--; 547 } 548 } else { /* serial port */ 549 struct mtty_port *mtty; 550 u_char *ptr, n_chars, line_stat; 551 552 mtty = &sc->ms_mtty->ms_port[port]; 553 cd = mtty->mp_cd1400; 554 555 if( ISSET(rivr, CD1400_RIVR_EXCEPTION) ) { 556 line_stat = cd1400_read_reg(cd, CD1400_RDSR); 557 n_chars = 1; 558 } else { /* no exception, received data OK */ 559 line_stat = 0; 560 n_chars = cd1400_read_reg(cd, CD1400_RDCR); 561 } 562 563 ptr = mtty->mp_rput; 564 while( n_chars-- ) { 565 *ptr++ = line_stat; 566 *ptr++ = cd1400_read_reg(cd, CD1400_RDSR); 567 if( ptr == mtty->mp_rend ) ptr = mtty->mp_rbuf; 568 if( ptr == mtty->mp_rget ) { 569 if( ptr == mtty->mp_rbuf ) 570 ptr = mtty->mp_rend; 571 ptr -= 2; 572 SET(mtty->mp_flags, MTTYF_RING_OVERFLOW); 573 break; 574 } 575 } 576 mtty->mp_rput = ptr; 577 578 needsoftint = 1; 579 } 580 581 cd1400_write_reg(cd, CD1400_EOSRR, 0); /* end service context */ 582 serviced = 1; 583 } /* if(rx_service...) */ 584 585 if( ISSET(status, CD1400_SVRR_MDMCH) ) { 586 u_char mivr = *sc->ms_svcackm; /* enter mdm service context */ 587 int port = mivr >> 4; 588 struct mtty_port *mtty; 589 int carrier; 590 u_char msvr; 591 592 /* 593 * Handle CD (LC2+1Sp = DSR) changes. 594 */ 595 mtty = &sc->ms_mtty->ms_port[port]; 596 cd = mtty->mp_cd1400; 597 msvr = cd1400_read_reg(cd, CD1400_MSVR2); 598 carrier = ISSET(msvr, cd->cd_parmode ? CD1400_MSVR2_DSR : CD1400_MSVR2_CD); 599 600 if( mtty->mp_carrier != carrier ) { 601 SET(mtty->mp_flags, MTTYF_CARRIER_CHANGED); 602 mtty->mp_carrier = carrier; 603 needsoftint = 1; 604 } 605 606 cd1400_write_reg(cd, CD1400_EOSRR, 0); /* end service context */ 607 serviced = 1; 608 } /* if(mdm_service...) */ 609 610 if( ISSET(status, CD1400_SVRR_TXRDY) ) { 611 u_char tivr = *sc->ms_svcackt; /* enter tx service context */ 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 634 * to send, so shut off interrupts and 635 * signal for a wakeup, which can't be 636 * done here in case we beat mbpp_send to 637 * the tsleep call (we are running at >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 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 /* I don't quite fill the fifo in case the last one is a 671 * NULL which I have to double up because its the escape 672 * code for embedded transmit characters. 673 */ 674 while( mtty->mp_txc > 0 && count < CD1400_TX_FIFO_SIZE - 1 ) { 675 u_char ch; 676 677 ch = *mtty->mp_txp; 678 679 mtty->mp_txc--; 680 mtty->mp_txp++; 681 682 if( ch == 0 ) { 683 cd1400_write_reg(cd, CD1400_TDR, ch); 684 count++; 685 } 686 687 cd1400_write_reg(cd, CD1400_TDR, ch); 688 count++; 689 } 690 } 691 692 /* if we ran out of work or are requested to STOP then 693 * shut off the txrdy interrupts and signal DONE to flush 694 * out the chars we have sent. 695 */ 696 if( mtty->mp_txc == 0 || ISSET(mtty->mp_flags, MTTYF_STOP) ) { 697 register int srer; 698 699 srer = cd1400_read_reg(cd, CD1400_SRER); 700 CLR(srer, CD1400_SRER_TXRDY); 701 cd1400_write_reg(cd, CD1400_SRER, srer); 702 CLR(mtty->mp_flags, MTTYF_STOP); 703 704 SET(mtty->mp_flags, MTTYF_DONE); 705 needsoftint = 1; 706 } 707 } 708 709 cd1400_write_reg(cd, CD1400_EOSRR, 0); /* end service context */ 710 serviced = 1; 711 } /* if(tx_service...) */ 712 713 /* XXX service CD1190 interrupts too 714 for( chip = 0 ; chip < sc->ms_ncd1190 ; chip++ ) { 715 } 716 */ 717 718 if (needsoftint) 719 /* trigger the soft interrupt */ 720 softintr_schedule(sc->ms_sicookie); 721 722 return(serviced); 723 } 724 725 /* 726 * magma soft interrupt handler 727 * 728 * returns 1 if it handled it, 0 otherwise 729 * 730 * runs at spltty() 731 */ 732 void 733 magma_soft(arg) 734 void *arg; 735 { 736 struct magma_softc *sc = arg; 737 struct mtty_softc *mtty = sc->ms_mtty; 738 struct mbpp_softc *mbpp = sc->ms_mbpp; 739 int port; 740 int s, flags; 741 742 if (mtty == NULL) 743 goto chkbpp; 744 745 /* 746 * check the tty ports to see what needs doing 747 */ 748 for( port = 0 ; port < mtty->ms_nports ; port++ ) { 749 struct mtty_port *mp = &mtty->ms_port[port]; 750 struct tty *tp = mp->mp_tty; 751 752 if( !ISSET(tp->t_state, TS_ISOPEN) ) 753 continue; 754 755 /* 756 * handle any received data 757 */ 758 while( mp->mp_rget != mp->mp_rput ) { 759 u_char stat; 760 int data; 761 762 stat = mp->mp_rget[0]; 763 data = mp->mp_rget[1]; 764 mp->mp_rget = ((mp->mp_rget + 2) == mp->mp_rend) 765 ? mp->mp_rbuf : (mp->mp_rget + 2); 766 767 if( stat & (CD1400_RDSR_BREAK | CD1400_RDSR_FE) ) 768 data |= TTY_FE; 769 if( stat & CD1400_RDSR_PE ) 770 data |= TTY_PE; 771 772 if( stat & CD1400_RDSR_OE ) 773 log(LOG_WARNING, "%s%x: fifo overflow\n", 774 mtty->ms_dev.dv_xname, port); 775 776 (*tp->t_linesw->l_rint)(data, tp); 777 } 778 779 s = splhigh(); /* block out hard interrupt routine */ 780 flags = mp->mp_flags; 781 CLR(mp->mp_flags, MTTYF_DONE | MTTYF_CARRIER_CHANGED | MTTYF_RING_OVERFLOW); 782 splx(s); /* ok */ 783 784 if( ISSET(flags, MTTYF_CARRIER_CHANGED) ) { 785 dprintf(("%s%x: cd %s\n", mtty->ms_dev.dv_xname, 786 port, mp->mp_carrier ? "on" : "off")); 787 (*tp->t_linesw->l_modem)(tp, mp->mp_carrier); 788 } 789 790 if( ISSET(flags, MTTYF_RING_OVERFLOW) ) { 791 log(LOG_WARNING, "%s%x: ring buffer overflow\n", 792 mtty->ms_dev.dv_xname, port); 793 } 794 795 if( ISSET(flags, MTTYF_DONE) ) { 796 ndflush(&tp->t_outq, mp->mp_txp - tp->t_outq.c_cf); 797 CLR(tp->t_state, TS_BUSY); 798 (*tp->t_linesw->l_start)(tp); /* might be some more */ 799 } 800 } /* for(each mtty...) */ 801 802 803 chkbpp: 804 /* 805 * Check the bpp ports (if any) to see what needs doing 806 */ 807 if (mbpp == NULL) 808 return; 809 810 for( port = 0 ; port < mbpp->ms_nports ; port++ ) { 811 struct mbpp_port *mp = &mbpp->ms_port[port]; 812 813 if( !ISSET(mp->mp_flags, MBPPF_OPEN) ) 814 continue; 815 816 s = splhigh(); 817 flags = mp->mp_flags; 818 CLR(mp->mp_flags, MBPPF_WAKEUP); 819 splx(s); 820 821 if( ISSET(flags, MBPPF_WAKEUP) ) { 822 wakeup(mp); 823 } 824 825 } /* for(each mbpp...) */ 826 } 827 828 /************************************************************************ 829 * 830 * MTTY Routines 831 * 832 * mtty_match match one mtty device 833 * mtty_attach attach mtty devices 834 * mttyopen open mtty device 835 * mttyclose close mtty device 836 * mttyread read from mtty 837 * mttywrite write to mtty 838 * mttyioctl do ioctl on mtty 839 * mttytty return tty pointer for mtty 840 * mttystop stop mtty device 841 * mtty_start start mtty device 842 * mtty_param set mtty parameters 843 * mtty_modem_control set modem control lines 844 */ 845 846 int 847 mtty_match(parent, cf, args) 848 struct device *parent; 849 struct cfdata *cf; 850 void *args; 851 { 852 struct magma_softc *sc = (struct magma_softc *)parent; 853 854 return( args == mtty_match && sc->ms_board->mb_nser && sc->ms_mtty == NULL ); 855 } 856 857 void 858 mtty_attach(parent, dev, args) 859 struct device *parent; 860 struct device *dev; 861 void *args; 862 { 863 struct magma_softc *sc = (struct magma_softc *)parent; 864 struct mtty_softc *ms = (struct mtty_softc *)dev; 865 int port, chip, chan; 866 867 sc->ms_mtty = ms; 868 dprintf((" addr %p", ms)); 869 870 for( port = 0, chip = 0, chan = 0 ; port < sc->ms_board->mb_nser ; port++ ) { 871 struct mtty_port *mp = &ms->ms_port[port]; 872 struct tty *tp; 873 874 mp->mp_cd1400 = &sc->ms_cd1400[chip]; 875 if (mp->mp_cd1400->cd_parmode && chan == 0) 876 chan = 1; /* skip channel 0 if parmode */ 877 mp->mp_channel = chan; 878 879 tp = ttymalloc(); 880 if (tp == NULL) break; 881 tty_attach(tp); 882 tp->t_oproc = mtty_start; 883 tp->t_param = mtty_param; 884 885 mp->mp_tty = tp; 886 887 mp->mp_rbuf = malloc(MTTY_RBUF_SIZE, M_DEVBUF, M_NOWAIT); 888 if (mp->mp_rbuf == NULL) break; 889 890 mp->mp_rend = mp->mp_rbuf + MTTY_RBUF_SIZE; 891 892 chan = (chan + 1) % CD1400_NO_OF_CHANNELS; 893 if (chan == 0) 894 chip++; 895 } 896 897 ms->ms_nports = port; 898 printf(": %d tty%s\n", port, port == 1 ? "" : "s"); 899 } 900 901 /* 902 * open routine. returns zero if successful, else error code 903 */ 904 int 905 mttyopen(dev, flags, mode, p) 906 dev_t dev; 907 int flags; 908 int mode; 909 struct proc *p; 910 { 911 int card = MAGMA_CARD(dev); 912 int port = MAGMA_PORT(dev); 913 struct mtty_softc *ms; 914 struct mtty_port *mp; 915 struct tty *tp; 916 struct cd1400 *cd; 917 int error, s; 918 919 if( card >= mtty_cd.cd_ndevs || 920 (ms = mtty_cd.cd_devs[card]) == NULL || port >= ms->ms_nports ) 921 return(ENXIO); /* device not configured */ 922 923 mp = &ms->ms_port[port]; 924 tp = mp->mp_tty; 925 tp->t_dev = dev; 926 927 if (ISSET(tp->t_state, TS_ISOPEN) && 928 ISSET(tp->t_state, TS_XCLUDE) && 929 p->p_ucred->cr_uid != 0) 930 return (EBUSY); 931 932 s = spltty(); 933 934 if( !ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 935 936 /* set defaults */ 937 ttychars(tp); 938 tp->t_iflag = TTYDEF_IFLAG; 939 tp->t_oflag = TTYDEF_OFLAG; 940 tp->t_cflag = TTYDEF_CFLAG; 941 if( ISSET(mp->mp_openflags, TIOCFLAG_CLOCAL) ) 942 SET(tp->t_cflag, CLOCAL); 943 if( ISSET(mp->mp_openflags, TIOCFLAG_CRTSCTS) ) 944 SET(tp->t_cflag, CRTSCTS); 945 if( ISSET(mp->mp_openflags, TIOCFLAG_MDMBUF) ) 946 SET(tp->t_cflag, MDMBUF); 947 tp->t_lflag = TTYDEF_LFLAG; 948 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 949 950 /* init ring buffer */ 951 mp->mp_rput = mp->mp_rget = mp->mp_rbuf; 952 953 /* reset CD1400 channel */ 954 cd = mp->mp_cd1400; 955 cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); 956 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET); 957 958 /* encode the port number in top half of LIVR */ 959 cd1400_write_reg(cd, CD1400_LIVR, port << 4 ); 960 961 /* sets parameters and raises DTR */ 962 (void)mtty_param(tp, &tp->t_termios); 963 964 /* set tty watermarks */ 965 ttsetwater(tp); 966 967 /* enable service requests */ 968 cd1400_write_reg(cd, CD1400_SRER, 969 CD1400_SRER_RXDATA | CD1400_SRER_MDMCH); 970 971 /* tell the tty about the carrier status */ 972 if( ISSET(mp->mp_openflags, TIOCFLAG_SOFTCAR) || 973 mp->mp_carrier ) 974 SET(tp->t_state, TS_CARR_ON); 975 else 976 CLR(tp->t_state, TS_CARR_ON); 977 } 978 splx(s); 979 980 error = ttyopen(tp, MTTY_DIALOUT(dev), ISSET(flags, O_NONBLOCK)); 981 if (error != 0) 982 goto bad; 983 984 error = (*tp->t_linesw->l_open)(dev, tp); 985 if (error != 0) 986 goto bad; 987 988 bad: 989 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 990 /* 991 * We failed to open the device, and nobody else had it opened. 992 * Clean up the state as appropriate. 993 */ 994 /* XXX - do that here */ 995 } 996 997 return (error); 998 } 999 1000 /* 1001 * close routine. returns zero if successful, else error code 1002 */ 1003 int 1004 mttyclose(dev, flag, mode, p) 1005 dev_t dev; 1006 int flag; 1007 int mode; 1008 struct proc *p; 1009 { 1010 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1011 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1012 struct tty *tp = mp->mp_tty; 1013 int s; 1014 1015 (*tp->t_linesw->l_close)(tp, flag); 1016 ttyclose(tp); 1017 1018 s = spltty(); 1019 1020 /* if HUPCL is set, and the tty is no longer open 1021 * shut down the port 1022 */ 1023 if( ISSET(tp->t_cflag, HUPCL) || !ISSET(tp->t_state, TS_ISOPEN) ) { 1024 /* XXX wait until FIFO is empty before turning off the channel 1025 struct cd1400 *cd = mp->mp_cd1400; 1026 */ 1027 1028 /* drop DTR and RTS */ 1029 (void)mtty_modem_control(mp, 0, DMSET); 1030 1031 /* turn off the channel 1032 cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); 1033 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET); 1034 */ 1035 } 1036 1037 splx(s); 1038 1039 return(0); 1040 } 1041 1042 /* 1043 * Read routine 1044 */ 1045 int 1046 mttyread(dev, uio, flags) 1047 dev_t dev; 1048 struct uio *uio; 1049 int flags; 1050 { 1051 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1052 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1053 struct tty *tp = mp->mp_tty; 1054 1055 return( (*tp->t_linesw->l_read)(tp, uio, flags) ); 1056 } 1057 1058 /* 1059 * Write routine 1060 */ 1061 int 1062 mttywrite(dev, uio, flags) 1063 dev_t dev; 1064 struct uio *uio; 1065 int flags; 1066 { 1067 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1068 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1069 struct tty *tp = mp->mp_tty; 1070 1071 return( (*tp->t_linesw->l_write)(tp, uio, flags) ); 1072 } 1073 1074 /* 1075 * Poll routine 1076 */ 1077 int 1078 mttypoll(dev, events, p) 1079 dev_t dev; 1080 int events; 1081 struct proc *p; 1082 { 1083 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1084 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1085 struct tty *tp = mp->mp_tty; 1086 1087 return ((*tp->t_linesw->l_poll)(tp, events, p)); 1088 } 1089 1090 /* 1091 * return tty pointer 1092 */ 1093 struct tty * 1094 mttytty(dev) 1095 dev_t dev; 1096 { 1097 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1098 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1099 1100 return(mp->mp_tty); 1101 } 1102 1103 /* 1104 * ioctl routine 1105 */ 1106 int 1107 mttyioctl(dev, cmd, data, flags, p) 1108 dev_t dev; 1109 u_long cmd; 1110 caddr_t data; 1111 int flags; 1112 struct proc *p; 1113 { 1114 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1115 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1116 struct tty *tp = mp->mp_tty; 1117 int error; 1118 1119 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, p); 1120 if( error != EPASSTHROUGH ) return(error); 1121 1122 error = ttioctl(tp, cmd, data, flags, p); 1123 if( error != EPASSTHROUGH ) return(error); 1124 1125 error = 0; 1126 1127 switch(cmd) { 1128 case TIOCSBRK: /* set break */ 1129 SET(mp->mp_flags, MTTYF_SET_BREAK); 1130 cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel); 1131 break; 1132 1133 case TIOCCBRK: /* clear break */ 1134 SET(mp->mp_flags, MTTYF_CLR_BREAK); 1135 cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel); 1136 break; 1137 1138 case TIOCSDTR: /* set DTR */ 1139 mtty_modem_control(mp, TIOCM_DTR, DMBIS); 1140 break; 1141 1142 case TIOCCDTR: /* clear DTR */ 1143 mtty_modem_control(mp, TIOCM_DTR, DMBIC); 1144 break; 1145 1146 case TIOCMSET: /* set modem lines */ 1147 mtty_modem_control(mp, *((int *)data), DMSET); 1148 break; 1149 1150 case TIOCMBIS: /* bit set modem lines */ 1151 mtty_modem_control(mp, *((int *)data), DMBIS); 1152 break; 1153 1154 case TIOCMBIC: /* bit clear modem lines */ 1155 mtty_modem_control(mp, *((int *)data), DMBIC); 1156 break; 1157 1158 case TIOCMGET: /* get modem lines */ 1159 *((int *)data) = mtty_modem_control(mp, 0, DMGET); 1160 break; 1161 1162 case TIOCGFLAGS: 1163 *((int *)data) = mp->mp_openflags; 1164 break; 1165 1166 case TIOCSFLAGS: 1167 if( suser(p->p_ucred, &p->p_acflag) ) 1168 error = EPERM; 1169 else 1170 mp->mp_openflags = *((int *)data) & 1171 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 1172 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 1173 break; 1174 1175 default: 1176 error = EPASSTHROUGH; 1177 } 1178 1179 return(error); 1180 } 1181 1182 /* 1183 * Stop output, e.g., for ^S or output flush. 1184 */ 1185 void 1186 mttystop(tp, flags) 1187 struct tty *tp; 1188 int flags; 1189 { 1190 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(tp->t_dev)]; 1191 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)]; 1192 int s; 1193 1194 s = spltty(); 1195 1196 if( ISSET(tp->t_state, TS_BUSY) ) { 1197 if( !ISSET(tp->t_state, TS_TTSTOP) ) 1198 SET(tp->t_state, TS_FLUSH); 1199 1200 /* 1201 * the transmit interrupt routine will disable transmit when it 1202 * notices that MTTYF_STOP has been set. 1203 */ 1204 SET(mp->mp_flags, MTTYF_STOP); 1205 } 1206 1207 splx(s); 1208 } 1209 1210 /* 1211 * Start output, after a stop. 1212 */ 1213 void 1214 mtty_start(tp) 1215 struct tty *tp; 1216 { 1217 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(tp->t_dev)]; 1218 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)]; 1219 int s; 1220 1221 s = spltty(); 1222 1223 /* we only need to do something if we are not already busy 1224 * or delaying or stopped 1225 */ 1226 if( !ISSET(tp->t_state, TS_TTSTOP | TS_TIMEOUT | TS_BUSY) ) { 1227 1228 /* if we are sleeping and output has drained below 1229 * low water mark, awaken 1230 */ 1231 if( tp->t_outq.c_cc <= tp->t_lowat ) { 1232 if( ISSET(tp->t_state, TS_ASLEEP) ) { 1233 CLR(tp->t_state, TS_ASLEEP); 1234 wakeup(&tp->t_outq); 1235 } 1236 1237 selwakeup(&tp->t_wsel); 1238 } 1239 1240 /* if something to send, start transmitting 1241 */ 1242 if( tp->t_outq.c_cc ) { 1243 mp->mp_txc = ndqb(&tp->t_outq, 0); 1244 mp->mp_txp = tp->t_outq.c_cf; 1245 SET(tp->t_state, TS_BUSY); 1246 cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel); 1247 } 1248 } 1249 1250 splx(s); 1251 } 1252 1253 /* 1254 * set/get modem line status 1255 * 1256 * bits can be: TIOCM_DTR, TIOCM_RTS, TIOCM_CTS, TIOCM_CD, TIOCM_RI, TIOCM_DSR 1257 * 1258 * note that DTR and RTS lines are exchanged, and that DSR is 1259 * not available on the LC2+1Sp card (used as CD) 1260 * 1261 * only let them fiddle with RTS if CRTSCTS is not enabled 1262 */ 1263 int 1264 mtty_modem_control(mp, bits, howto) 1265 struct mtty_port *mp; 1266 int bits; 1267 int howto; 1268 { 1269 struct cd1400 *cd = mp->mp_cd1400; 1270 struct tty *tp = mp->mp_tty; 1271 int s, msvr; 1272 1273 s = spltty(); 1274 1275 cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); 1276 1277 switch(howto) { 1278 case DMGET: /* get bits */ 1279 bits = 0; 1280 1281 bits |= TIOCM_LE; 1282 1283 msvr = cd1400_read_reg(cd, CD1400_MSVR1); 1284 if( msvr & CD1400_MSVR1_RTS ) bits |= TIOCM_DTR; 1285 1286 msvr = cd1400_read_reg(cd, CD1400_MSVR2); 1287 if( msvr & CD1400_MSVR2_DTR ) bits |= TIOCM_RTS; 1288 if( msvr & CD1400_MSVR2_CTS ) bits |= TIOCM_CTS; 1289 if( msvr & CD1400_MSVR2_RI ) bits |= TIOCM_RI; 1290 if( msvr & CD1400_MSVR2_DSR ) bits |= (cd->cd_parmode ? TIOCM_CD : TIOCM_DSR); 1291 if( msvr & CD1400_MSVR2_CD ) bits |= (cd->cd_parmode ? 0 : TIOCM_CD); 1292 1293 break; 1294 1295 case DMSET: /* reset bits */ 1296 if( !ISSET(tp->t_cflag, CRTSCTS) ) 1297 cd1400_write_reg(cd, CD1400_MSVR2, ((bits & TIOCM_RTS) ? CD1400_MSVR2_DTR : 0)); 1298 1299 cd1400_write_reg(cd, CD1400_MSVR1, ((bits & TIOCM_DTR) ? CD1400_MSVR1_RTS : 0)); 1300 1301 break; 1302 1303 case DMBIS: /* set bits */ 1304 if( (bits & TIOCM_RTS) && !ISSET(tp->t_cflag, CRTSCTS) ) 1305 cd1400_write_reg(cd, CD1400_MSVR2, CD1400_MSVR2_DTR); 1306 1307 if( bits & TIOCM_DTR ) 1308 cd1400_write_reg(cd, CD1400_MSVR1, CD1400_MSVR1_RTS); 1309 1310 break; 1311 1312 case DMBIC: /* clear bits */ 1313 if( (bits & TIOCM_RTS) && !ISSET(tp->t_cflag, CRTSCTS) ) 1314 cd1400_write_reg(cd, CD1400_MSVR2, 0); 1315 1316 if( bits & TIOCM_DTR ) 1317 cd1400_write_reg(cd, CD1400_MSVR1, 0); 1318 1319 break; 1320 } 1321 1322 splx(s); 1323 return(bits); 1324 } 1325 1326 /* 1327 * Set tty parameters, returns error or 0 on success 1328 */ 1329 int 1330 mtty_param(tp, t) 1331 struct tty *tp; 1332 struct termios *t; 1333 { 1334 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(tp->t_dev)]; 1335 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)]; 1336 struct cd1400 *cd = mp->mp_cd1400; 1337 int rbpr, tbpr, rcor, tcor; 1338 u_char mcor1 = 0, mcor2 = 0; 1339 int s, opt; 1340 1341 if( t->c_ospeed && cd1400_compute_baud(t->c_ospeed, cd->cd_clock, &tcor, &tbpr) ) 1342 return(EINVAL); 1343 1344 if( t->c_ispeed && cd1400_compute_baud(t->c_ispeed, cd->cd_clock, &rcor, &rbpr) ) 1345 return(EINVAL); 1346 1347 s = spltty(); 1348 1349 /* hang up the line if ospeed is zero, else raise DTR */ 1350 (void)mtty_modem_control(mp, TIOCM_DTR, (t->c_ospeed == 0 ? DMBIC : DMBIS)); 1351 1352 /* select channel, done in mtty_modem_control() */ 1353 /* cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); */ 1354 1355 /* set transmit speed */ 1356 if( t->c_ospeed ) { 1357 cd1400_write_reg(cd, CD1400_TCOR, tcor); 1358 cd1400_write_reg(cd, CD1400_TBPR, tbpr); 1359 } 1360 1361 /* set receive speed */ 1362 if( t->c_ispeed ) { 1363 cd1400_write_reg(cd, CD1400_RCOR, rcor); 1364 cd1400_write_reg(cd, CD1400_RBPR, rbpr); 1365 } 1366 1367 /* enable transmitting and receiving on this channel */ 1368 opt = CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTEN | CD1400_CCR_RCVEN; 1369 cd1400_write_ccr(cd, opt); 1370 1371 /* set parity, data and stop bits */ 1372 opt = 0; 1373 if( ISSET(t->c_cflag, PARENB) ) 1374 opt |= (ISSET(t->c_cflag, PARODD) ? CD1400_COR1_PARODD : CD1400_COR1_PARNORMAL); 1375 1376 if( !ISSET(t->c_iflag, INPCK) ) 1377 opt |= CD1400_COR1_NOINPCK; /* no parity checking */ 1378 1379 if( ISSET(t->c_cflag, CSTOPB) ) 1380 opt |= CD1400_COR1_STOP2; 1381 1382 switch( t->c_cflag & CSIZE ) { 1383 case CS5: 1384 opt |= CD1400_COR1_CS5; 1385 break; 1386 1387 case CS6: 1388 opt |= CD1400_COR1_CS6; 1389 break; 1390 1391 case CS7: 1392 opt |= CD1400_COR1_CS7; 1393 break; 1394 1395 default: 1396 opt |= CD1400_COR1_CS8; 1397 break; 1398 } 1399 1400 cd1400_write_reg(cd, CD1400_COR1, opt); 1401 1402 /* 1403 * enable Embedded Transmit Commands (for breaks) 1404 * use the CD1400 automatic CTS flow control if CRTSCTS is set 1405 */ 1406 opt = CD1400_COR2_ETC; 1407 if( ISSET(t->c_cflag, CRTSCTS) ) opt |= CD1400_COR2_CCTS_OFLOW; 1408 cd1400_write_reg(cd, CD1400_COR2, opt); 1409 1410 cd1400_write_reg(cd, CD1400_COR3, MTTY_RX_FIFO_THRESHOLD); 1411 1412 cd1400_write_ccr(cd, CD1400_CCR_CMDCORCHG | CD1400_CCR_COR1 | CD1400_CCR_COR2 | CD1400_CCR_COR3); 1413 1414 cd1400_write_reg(cd, CD1400_COR4, CD1400_COR4_PFO_EXCEPTION); 1415 cd1400_write_reg(cd, CD1400_COR5, 0); 1416 1417 /* 1418 * if automatic RTS handshaking enabled, set DTR threshold 1419 * (RTS and DTR lines are switched, CD1400 thinks its DTR) 1420 */ 1421 if( ISSET(t->c_cflag, CRTSCTS) ) 1422 mcor1 = MTTY_RX_DTR_THRESHOLD; 1423 1424 /* set up `carrier detect' interrupts */ 1425 if( cd->cd_parmode ) { 1426 SET(mcor1, CD1400_MCOR1_DSRzd); 1427 SET(mcor2, CD1400_MCOR2_DSRod); 1428 } else { 1429 SET(mcor1, CD1400_MCOR1_CDzd); 1430 SET(mcor2, CD1400_MCOR2_CDod); 1431 } 1432 1433 cd1400_write_reg(cd, CD1400_MCOR1, mcor1); 1434 cd1400_write_reg(cd, CD1400_MCOR2, mcor2); 1435 1436 /* receive timeout 2ms */ 1437 cd1400_write_reg(cd, CD1400_RTPR, 2); 1438 1439 splx(s); 1440 return(0); 1441 } 1442 1443 /************************************************************************ 1444 * 1445 * MBPP Routines 1446 * 1447 * mbpp_match match one mbpp device 1448 * mbpp_attach attach mbpp devices 1449 * mbppopen open mbpp device 1450 * mbppclose close mbpp device 1451 * mbppioctl do ioctl on mbpp 1452 * mbpp_rw general rw routine 1453 * mbpp_timeout rw timeout 1454 * mbpp_start rw start after delay 1455 * mbpp_send send data 1456 * mbpp_recv recv data 1457 */ 1458 1459 int 1460 mbpp_match(parent, cf, args) 1461 struct device *parent; 1462 struct cfdata *cf; 1463 void *args; 1464 { 1465 struct magma_softc *sc = (struct magma_softc *)parent; 1466 1467 return( args == mbpp_match && sc->ms_board->mb_npar && sc->ms_mbpp == NULL ); 1468 } 1469 1470 void 1471 mbpp_attach(parent, dev, args) 1472 struct device *parent; 1473 struct device *dev; 1474 void *args; 1475 { 1476 struct magma_softc *sc = (struct magma_softc *)parent; 1477 struct mbpp_softc *ms = (struct mbpp_softc *)dev; 1478 struct mbpp_port *mp; 1479 int port; 1480 1481 sc->ms_mbpp = ms; 1482 dprintf((" addr %p", ms)); 1483 1484 for( port = 0 ; port < sc->ms_board->mb_npar ; port++ ) { 1485 mp = &ms->ms_port[port]; 1486 1487 callout_init(&mp->mp_timeout_ch); 1488 callout_init(&mp->mp_start_ch); 1489 1490 if( sc->ms_ncd1190 ) 1491 mp->mp_cd1190 = &sc->ms_cd1190[port]; 1492 else 1493 mp->mp_cd1400 = &sc->ms_cd1400[0]; 1494 } 1495 1496 ms->ms_nports = port; 1497 printf(": %d port%s\n", port, port == 1 ? "" : "s"); 1498 } 1499 1500 /* 1501 * open routine. returns zero if successful, else error code 1502 */ 1503 int 1504 mbppopen(dev, flags, mode, p) 1505 dev_t dev; 1506 int flags; 1507 int mode; 1508 struct proc *p; 1509 { 1510 int card = MAGMA_CARD(dev); 1511 int port = MAGMA_PORT(dev); 1512 struct mbpp_softc *ms; 1513 struct mbpp_port *mp; 1514 int s; 1515 1516 if( card >= mbpp_cd.cd_ndevs || 1517 (ms = mbpp_cd.cd_devs[card]) == NULL || port >= ms->ms_nports ) 1518 return(ENXIO); 1519 1520 mp = &ms->ms_port[port]; 1521 1522 s = spltty(); 1523 if( ISSET(mp->mp_flags, MBPPF_OPEN) ) { 1524 splx(s); 1525 return(EBUSY); 1526 } 1527 SET(mp->mp_flags, MBPPF_OPEN); 1528 splx(s); 1529 1530 /* set defaults */ 1531 mp->mp_burst = MBPP_BURST; 1532 mp->mp_timeout = mbpp_mstohz(MBPP_TIMEOUT); 1533 mp->mp_delay = mbpp_mstohz(MBPP_DELAY); 1534 1535 /* init chips */ 1536 if( mp->mp_cd1400 ) { /* CD1400 */ 1537 struct cd1400 *cd = mp->mp_cd1400; 1538 1539 /* set up CD1400 channel */ 1540 s = spltty(); 1541 cd1400_write_reg(cd, CD1400_CAR, 0); 1542 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET); 1543 cd1400_write_reg(cd, CD1400_LIVR, (1<<3)); 1544 splx(s); 1545 } else { /* CD1190 */ 1546 mp->mp_flags = 0; 1547 return (ENXIO); 1548 } 1549 1550 return (0); 1551 } 1552 1553 /* 1554 * close routine. returns zero if successful, else error code 1555 */ 1556 int 1557 mbppclose(dev, flag, mode, p) 1558 dev_t dev; 1559 int flag; 1560 int mode; 1561 struct proc *p; 1562 { 1563 struct mbpp_softc *ms = mbpp_cd.cd_devs[MAGMA_CARD(dev)]; 1564 struct mbpp_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1565 1566 mp->mp_flags = 0; 1567 return(0); 1568 } 1569 1570 /* 1571 * ioctl routine 1572 */ 1573 int 1574 mbppioctl(dev, cmd, data, flags, p) 1575 dev_t dev; 1576 u_long cmd; 1577 caddr_t data; 1578 int flags; 1579 struct proc *p; 1580 { 1581 struct mbpp_softc *ms = mbpp_cd.cd_devs[MAGMA_CARD(dev)]; 1582 struct mbpp_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1583 struct mbpp_param *bp; 1584 int error = 0; 1585 int s; 1586 1587 switch(cmd) { 1588 case MBPPIOCSPARAM: 1589 bp = (struct mbpp_param *)data; 1590 if( bp->bp_burst < MBPP_BURST_MIN || bp->bp_burst > MBPP_BURST_MAX || 1591 bp->bp_delay < MBPP_DELAY_MIN || bp->bp_delay > MBPP_DELAY_MIN ) { 1592 error = EINVAL; 1593 } else { 1594 mp->mp_burst = bp->bp_burst; 1595 mp->mp_timeout = mbpp_mstohz(bp->bp_timeout); 1596 mp->mp_delay = mbpp_mstohz(bp->bp_delay); 1597 } 1598 break; 1599 case MBPPIOCGPARAM: 1600 bp = (struct mbpp_param *)data; 1601 bp->bp_burst = mp->mp_burst; 1602 bp->bp_timeout = mbpp_hztoms(mp->mp_timeout); 1603 bp->bp_delay = mbpp_hztoms(mp->mp_delay); 1604 break; 1605 case MBPPIOCGSTAT: 1606 /* XXX make this more generic */ 1607 s = spltty(); 1608 cd1400_write_reg(mp->mp_cd1400, CD1400_CAR, 0); 1609 *(int *)data = cd1400_read_reg(mp->mp_cd1400, CD1400_PSVR); 1610 splx(s); 1611 break; 1612 default: 1613 error = ENOTTY; 1614 } 1615 1616 return(error); 1617 } 1618 1619 int 1620 mbpp_rw(dev, uio, flag) 1621 dev_t dev; 1622 struct uio *uio; 1623 int flag; 1624 { 1625 int card = MAGMA_CARD(dev); 1626 int port = MAGMA_PORT(dev); 1627 struct mbpp_softc *ms = mbpp_cd.cd_devs[card]; 1628 struct mbpp_port *mp = &ms->ms_port[port]; 1629 caddr_t buffer, ptr; 1630 int buflen, cnt, len; 1631 int s, error = 0; 1632 int gotdata = 0; 1633 1634 if( uio->uio_resid == 0 ) 1635 return(0); 1636 1637 buflen = min(uio->uio_resid, mp->mp_burst); 1638 buffer = malloc(buflen, M_DEVBUF, M_WAITOK); 1639 if( buffer == NULL ) 1640 return(ENOMEM); 1641 1642 SET(mp->mp_flags, MBPPF_UIO); 1643 1644 /* 1645 * start timeout, if needed 1646 */ 1647 if( mp->mp_timeout > 0 ) { 1648 SET(mp->mp_flags, MBPPF_TIMEOUT); 1649 callout_reset(&mp->mp_timeout_ch, mp->mp_timeout, 1650 mbpp_timeout, mp); 1651 } 1652 1653 len = cnt = 0; 1654 while( uio->uio_resid > 0 ) { 1655 len = min(buflen, uio->uio_resid); 1656 ptr = buffer; 1657 1658 if( uio->uio_rw == UIO_WRITE ) { 1659 error = uiomove(ptr, len, uio); 1660 if( error ) break; 1661 } 1662 again: /* goto bad */ 1663 /* timed out? */ 1664 if( !ISSET(mp->mp_flags, MBPPF_UIO) ) 1665 break; 1666 1667 /* 1668 * perform the operation 1669 */ 1670 if( uio->uio_rw == UIO_WRITE ) { 1671 cnt = mbpp_send(mp, ptr, len); 1672 } else { 1673 cnt = mbpp_recv(mp, ptr, len); 1674 } 1675 1676 if( uio->uio_rw == UIO_READ ) { 1677 if( cnt ) { 1678 error = uiomove(ptr, cnt, uio); 1679 if( error ) break; 1680 gotdata++; 1681 } 1682 else if( gotdata ) /* consider us done */ 1683 break; 1684 } 1685 1686 /* timed out? */ 1687 if( !ISSET(mp->mp_flags, MBPPF_UIO) ) 1688 break; 1689 1690 /* 1691 * poll delay? 1692 */ 1693 if( mp->mp_delay > 0 ) { 1694 s = splsoftclock(); 1695 SET(mp->mp_flags, MBPPF_DELAY); 1696 callout_reset(&mp->mp_start_ch, mp->mp_delay, 1697 mbpp_start, mp); 1698 error = tsleep(mp, PCATCH | PZERO, "mbppdelay", 0); 1699 splx(s); 1700 if( error ) break; 1701 } 1702 1703 /* 1704 * don't call uiomove again until we used all the data we grabbed 1705 */ 1706 if( uio->uio_rw == UIO_WRITE && cnt != len ) { 1707 ptr += cnt; 1708 len -= cnt; 1709 cnt = 0; 1710 goto again; 1711 } 1712 } 1713 1714 /* 1715 * clear timeouts 1716 */ 1717 s = splsoftclock(); 1718 if( ISSET(mp->mp_flags, MBPPF_TIMEOUT) ) { 1719 callout_stop(&mp->mp_timeout_ch); 1720 CLR(mp->mp_flags, MBPPF_TIMEOUT); 1721 } 1722 if( ISSET(mp->mp_flags, MBPPF_DELAY) ) { 1723 callout_stop(&mp->mp_start_ch); 1724 CLR(mp->mp_flags, MBPPF_DELAY); 1725 } 1726 splx(s); 1727 1728 /* 1729 * adjust for those chars that we uiomoved but never actually wrote 1730 */ 1731 if( uio->uio_rw == UIO_WRITE && cnt != len ) { 1732 uio->uio_resid += (len - cnt); 1733 } 1734 1735 free(buffer, M_DEVBUF); 1736 return(error); 1737 } 1738 1739 void 1740 mbpp_timeout(arg) 1741 void *arg; 1742 { 1743 struct mbpp_port *mp = arg; 1744 1745 CLR(mp->mp_flags, MBPPF_UIO | MBPPF_TIMEOUT); 1746 wakeup(mp); 1747 } 1748 1749 void 1750 mbpp_start(arg) 1751 void *arg; 1752 { 1753 struct mbpp_port *mp = arg; 1754 1755 CLR(mp->mp_flags, MBPPF_DELAY); 1756 wakeup(mp); 1757 } 1758 1759 int 1760 mbpp_send(mp, ptr, len) 1761 struct mbpp_port *mp; 1762 caddr_t ptr; 1763 int len; 1764 { 1765 int s; 1766 struct cd1400 *cd = mp->mp_cd1400; 1767 1768 /* set up io information */ 1769 mp->mp_ptr = ptr; 1770 mp->mp_cnt = len; 1771 1772 /* start transmitting */ 1773 s = spltty(); 1774 if( cd ) { 1775 cd1400_write_reg(cd, CD1400_CAR, 0); 1776 1777 /* output strobe width ~1microsecond */ 1778 cd1400_write_reg(cd, CD1400_TBPR, 10); 1779 1780 /* enable channel */ 1781 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTEN); 1782 cd1400_write_reg(cd, CD1400_SRER, CD1400_SRER_TXRDY); 1783 } 1784 1785 /* ZZzzz... */ 1786 tsleep(mp, PCATCH | PZERO, "mbpp_send", 0); 1787 1788 /* stop transmitting */ 1789 if( cd ) { 1790 cd1400_write_reg(cd, CD1400_CAR, 0); 1791 1792 /* disable transmitter */ 1793 cd1400_write_reg(cd, CD1400_SRER, 0); 1794 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTDIS); 1795 1796 /* flush fifo */ 1797 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET | CD1400_CCR_FTF); 1798 } 1799 splx(s); 1800 1801 /* return number of chars sent */ 1802 return(len - mp->mp_cnt); 1803 } 1804 1805 int 1806 mbpp_recv(mp, ptr, len) 1807 struct mbpp_port *mp; 1808 caddr_t ptr; 1809 int len; 1810 { 1811 int s; 1812 struct cd1400 *cd = mp->mp_cd1400; 1813 1814 /* set up io information */ 1815 mp->mp_ptr = ptr; 1816 mp->mp_cnt = len; 1817 1818 /* start receiving */ 1819 s = spltty(); 1820 if( cd ) { 1821 int rcor, rbpr; 1822 1823 cd1400_write_reg(cd, CD1400_CAR, 0); 1824 1825 /* input strobe at 100kbaud (10microseconds) */ 1826 cd1400_compute_baud(100000, cd->cd_clock, &rcor, &rbpr); 1827 cd1400_write_reg(cd, CD1400_RCOR, rcor); 1828 cd1400_write_reg(cd, CD1400_RBPR, rbpr); 1829 1830 /* rx threshold */ 1831 cd1400_write_reg(cd, CD1400_COR3, MBPP_RX_FIFO_THRESHOLD); 1832 cd1400_write_ccr(cd, CD1400_CCR_CMDCORCHG | CD1400_CCR_COR3); 1833 1834 /* enable channel */ 1835 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_RCVEN); 1836 cd1400_write_reg(cd, CD1400_SRER, CD1400_SRER_RXDATA); 1837 } 1838 1839 /* ZZzzz... */ 1840 tsleep(mp, PCATCH | PZERO, "mbpp_recv", 0); 1841 1842 /* stop receiving */ 1843 if( cd ) { 1844 cd1400_write_reg(cd, CD1400_CAR, 0); 1845 1846 /* disable receiving */ 1847 cd1400_write_reg(cd, CD1400_SRER, 0); 1848 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_RCVDIS); 1849 } 1850 splx(s); 1851 1852 /* return number of chars received */ 1853 return(len - mp->mp_cnt); 1854 } 1855 1856 int 1857 mbpp_hztoms(h) 1858 int h; 1859 { 1860 int m = h; 1861 1862 if( m > 0 ) 1863 m = m * 1000 / hz; 1864 return(m); 1865 } 1866 1867 int 1868 mbpp_mstohz(m) 1869 int m; 1870 { 1871 int h = m; 1872 1873 if( h > 0 ) { 1874 h = h * hz / 1000; 1875 if( h == 0 ) 1876 h = 1000 / hz; 1877 } 1878 return(h); 1879 } 1880 1881 #endif /* NMAGMA */
Cache object: 82aa5f8edbaf57d62aa326f65060d907
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