magma.c revision 1.55
1 /* $NetBSD: magma.c,v 1.55 2011/04/24 16:27:01 rmind Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 Iain Hibbert 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * Driver for Magma SBus Serial/Parallel cards using the Cirrus Logic 30 * CD1400 & CD1190 chips 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: magma.c,v 1.55 2011/04/24 16:27:01 rmind Exp $"); 35 36 #if 0 37 #define MAGMA_DEBUG 38 #endif 39 40 #include "magma.h" 41 #if NMAGMA > 0 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/proc.h> 46 #include <sys/device.h> 47 #include <sys/file.h> 48 #include <sys/ioctl.h> 49 #include <sys/malloc.h> 50 #include <sys/tty.h> 51 #include <sys/time.h> 52 #include <sys/kernel.h> 53 #include <sys/syslog.h> 54 #include <sys/conf.h> 55 #include <sys/errno.h> 56 #include <sys/kauth.h> 57 #include <sys/intr.h> 58 59 #include <sys/bus.h> 60 #include <machine/autoconf.h> 61 62 #include <dev/sbus/sbusvar.h> 63 64 #include <dev/ic/cd1400reg.h> 65 #include <dev/ic/cd1190reg.h> 66 67 #include <dev/sbus/mbppio.h> 68 #include <dev/sbus/magmareg.h> 69 70 #include "ioconf.h" 71 72 /* supported cards 73 * 74 * The table below lists the cards that this driver is likely to 75 * be able to support. 76 * 77 * Cards with parallel ports: except for the LC2+1Sp, they all use 78 * the CD1190 chip which I know nothing about. I've tried to leave 79 * hooks for it so it shouldn't be too hard to add support later. 80 * (I think somebody is working on this separately) 81 * 82 * Thanks to Bruce at Magma for telling me the hardware offsets. 83 */ 84 static struct magma_board_info supported_cards[] = { 85 { 86 "MAGMA_Sp", "MAGMA,4_Sp", "Magma 4 Sp", 4, 0, 87 1, 0xa000, 0xc000, 0xe000, { 0x8000, 0, 0, 0 }, 88 0, { 0, 0 } 89 }, 90 { 91 "MAGMA_Sp", "MAGMA,8_Sp", "Magma 8 Sp", 8, 0, 92 2, 0xa000, 0xc000, 0xe000, { 0x4000, 0x6000, 0, 0 }, 93 0, { 0, 0 } 94 }, 95 { 96 "MAGMA_Sp", "MAGMA,_8HS_Sp", "Magma Fast 8 Sp", 8, 0, 97 2, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0, 0 }, 98 0, { 0, 0 } 99 }, 100 { 101 "MAGMA_Sp", "MAGMA,_8SP_422", "Magma 8 Sp - 422", 8, 0, 102 2, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0, 0 }, 103 0, { 0, 0 } 104 }, 105 { 106 "MAGMA_Sp", "MAGMA,12_Sp", "Magma 12 Sp", 12, 0, 107 3, 0xa000, 0xc000, 0xe000, { 0x2000, 0x4000, 0x6000, 0 }, 108 0, { 0, 0 } 109 }, 110 { 111 "MAGMA_Sp", "MAGMA,16_Sp", "Magma 16 Sp", 16, 0, 112 4, 0xd000, 0xe000, 0xf000, { 0x8000, 0x9000, 0xa000, 0xb000 }, 113 0, { 0, 0 } 114 }, 115 { 116 "MAGMA_Sp", "MAGMA,16_Sp_2", "Magma 16 Sp", 16, 0, 117 4, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0xc000, 0xe000 }, 118 0, { 0, 0 } 119 }, 120 { 121 "MAGMA_Sp", "MAGMA,16HS_Sp", "Magma Fast 16 Sp", 16, 0, 122 4, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0xc000, 0xe000 }, 123 0, { 0, 0 } 124 }, 125 { 126 "MAGMA_Sp", "MAGMA,21_Sp", "Magma LC 2+1 Sp", 2, 1, 127 1, 0xa000, 0xc000, 0xe000, { 0x8000, 0, 0, 0 }, 128 0, { 0, 0 } 129 }, 130 { 131 "MAGMA_Sp", "MAGMA,21HS_Sp", "Magma 2+1 Sp", 2, 1, 132 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 }, 133 1, { 0x6000, 0 } 134 }, 135 { 136 "MAGMA_Sp", "MAGMA,41_Sp", "Magma 4+1 Sp", 4, 1, 137 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 }, 138 1, { 0x6000, 0 } 139 }, 140 { 141 "MAGMA_Sp", "MAGMA,82_Sp", "Magma 8+2 Sp", 8, 2, 142 2, 0xd000, 0xe000, 0xf000, { 0x8000, 0x9000, 0, 0 }, 143 2, { 0xa000, 0xb000 } 144 }, 145 { 146 "MAGMA_Sp", "MAGMA,P1_Sp", "Magma P1 Sp", 0, 1, 147 0, 0, 0, 0, { 0, 0, 0, 0 }, 148 1, { 0x8000, 0 } 149 }, 150 { 151 "MAGMA_Sp", "MAGMA,P2_Sp", "Magma P2 Sp", 0, 2, 152 0, 0, 0, 0, { 0, 0, 0, 0 }, 153 2, { 0x4000, 0x8000 } 154 }, 155 { 156 "MAGMA 2+1HS Sp", "", "Magma 2+1HS Sp", 2, 0, 157 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 }, 158 1, { 0x8000, 0 } 159 }, 160 { 161 NULL, NULL, NULL, 0, 0, 162 0, 0, 0, 0, { 0, 0, 0, 0 }, 163 0, { 0, 0 } 164 } 165 }; 166 167 /************************************************************************ 168 * 169 * Autoconfig Stuff 170 */ 171 172 CFATTACH_DECL(magma, sizeof(struct magma_softc), 173 magma_match, magma_attach, NULL, NULL); 174 175 CFATTACH_DECL(mtty, sizeof(struct mtty_softc), 176 mtty_match, mtty_attach, NULL, NULL); 177 178 CFATTACH_DECL(mbpp, sizeof(struct mbpp_softc), 179 mbpp_match, mbpp_attach, NULL, NULL); 180 181 dev_type_open(mttyopen); 182 dev_type_close(mttyclose); 183 dev_type_read(mttyread); 184 dev_type_write(mttywrite); 185 dev_type_ioctl(mttyioctl); 186 dev_type_stop(mttystop); 187 dev_type_tty(mttytty); 188 dev_type_poll(mttypoll); 189 190 const struct cdevsw mtty_cdevsw = { 191 mttyopen, mttyclose, mttyread, mttywrite, mttyioctl, 192 mttystop, mttytty, mttypoll, nommap, ttykqfilter, D_TTY 193 }; 194 195 dev_type_open(mbppopen); 196 dev_type_close(mbppclose); 197 dev_type_read(mbpp_rw); 198 dev_type_ioctl(mbppioctl); 199 200 const struct cdevsw mbpp_cdevsw = { 201 mbppopen, mbppclose, mbpp_rw, mbpp_rw, mbppioctl, 202 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER 203 }; 204 205 /************************************************************************ 206 * 207 * CD1400 Routines 208 * 209 * cd1400_compute_baud calculate COR/BPR register values 210 * cd1400_write_ccr write a value to CD1400 ccr 211 * cd1400_read_reg read from a CD1400 register 212 * cd1400_write_reg write to a CD1400 register 213 * cd1400_enable_transmitter enable transmitting on CD1400 channel 214 */ 215 216 /* 217 * compute the bpr/cor pair for any baud rate 218 * returns 0 for success, 1 for failure 219 */ 220 int 221 cd1400_compute_baud(speed_t speed, int clock, int *cor, int *bpr) 222 { 223 int c, co, br; 224 225 if( speed < 50 || speed > 150000 ) 226 return(1); 227 228 for( c = 0, co = 8 ; co <= 2048 ; co <<= 2, c++ ) { 229 br = ((clock * 1000000) + (co * speed) / 2) / (co * speed); 230 if( br < 0x100 ) { 231 *bpr = br; 232 *cor = c; 233 return(0); 234 } 235 } 236 237 return(1); 238 } 239 240 /* 241 * Write a CD1400 channel command, should have a timeout? 242 */ 243 inline void 244 cd1400_write_ccr(struct cd1400 *cd, u_char cmd) 245 { 246 while( cd1400_read_reg(cd, CD1400_CCR) ) 247 ; 248 249 cd1400_write_reg(cd, CD1400_CCR, cmd); 250 } 251 252 /* 253 * read a value from a cd1400 register 254 */ 255 inline u_char 256 cd1400_read_reg(struct cd1400 *cd, int reg) 257 { 258 return(cd->cd_reg[reg]); 259 } 260 261 /* 262 * write a value to a cd1400 register 263 */ 264 inline void 265 cd1400_write_reg(struct cd1400 *cd, int reg, u_char value) 266 { 267 cd->cd_reg[reg] = value; 268 } 269 270 /* 271 * enable transmit service requests for cd1400 channel 272 */ 273 void 274 cd1400_enable_transmitter(struct cd1400 *cd, int channel) 275 { 276 int s, srer; 277 278 s = spltty(); 279 cd1400_write_reg(cd, CD1400_CAR, channel); 280 srer = cd1400_read_reg(cd, CD1400_SRER); 281 SET(srer, CD1400_SRER_TXRDY); 282 cd1400_write_reg(cd, CD1400_SRER, srer); 283 splx(s); 284 } 285 286 /************************************************************************ 287 * 288 * CD1190 Routines 289 */ 290 291 /* well, there are none yet */ 292 293 /************************************************************************ 294 * 295 * Magma Routines 296 * 297 * magma_match reports if we have a magma board available 298 * magma_attach attaches magma boards to the sbus 299 * magma_hard hardware level interrupt routine 300 * magma_soft software level interrupt routine 301 */ 302 303 int 304 magma_match(device_t parent, cfdata_t cf, void *aux) 305 { 306 struct sbus_attach_args *sa = aux; 307 struct magma_board_info *card; 308 309 /* See if we support this device */ 310 for (card = supported_cards; ; card++) { 311 if (card->mb_sbusname == NULL) 312 /* End of table: no match */ 313 return (0); 314 if (strcmp(sa->sa_name, card->mb_sbusname) == 0) 315 break; 316 } 317 318 dprintf(("magma: matched `%s'\n", sa->sa_name)); 319 dprintf(("magma: magma_prom `%s'\n", 320 prom_getpropstring(sa->sa_node, "magma_prom"))); 321 dprintf(("magma: intlevels `%s'\n", 322 prom_getpropstring(sa->sa_node, "intlevels"))); 323 dprintf(("magma: chiprev `%s'\n", 324 prom_getpropstring(sa->sa_node, "chiprev"))); 325 dprintf(("magma: clock `%s'\n", 326 prom_getpropstring(sa->sa_node, "clock"))); 327 328 return (1); 329 } 330 331 void 332 magma_attach(device_t parent, device_t self, void *aux) 333 { 334 struct sbus_attach_args *sa = aux; 335 struct magma_softc *sc = device_private(self); 336 struct magma_board_info *card; 337 bus_space_handle_t bh; 338 char *magma_prom, *clockstr; 339 int cd_clock; 340 int node, chip; 341 342 node = sa->sa_node; 343 344 /* 345 * Find the card model. 346 * Older models all have sbus node name `MAGMA_Sp' (see 347 * `supported_cards[]' above), and must be distinguished 348 * by the `magma_prom' property. 349 */ 350 magma_prom = prom_getpropstring(node, "magma_prom"); 351 352 for (card = supported_cards; card->mb_name != NULL; card++) { 353 if (strcmp(sa->sa_name, card->mb_sbusname) != 0) 354 /* Sbus node name doesn't match */ 355 continue; 356 if (strcmp(magma_prom, card->mb_name) == 0) 357 /* Model name match */ 358 break; 359 } 360 361 if( card->mb_name == NULL ) { 362 printf(": %s (unsupported)\n", magma_prom); 363 return; 364 } 365 366 dprintf((" addr %p", sc)); 367 printf(": %s\n", card->mb_realname); 368 369 sc->ms_board = card; 370 sc->ms_ncd1400 = card->mb_ncd1400; 371 sc->ms_ncd1190 = card->mb_ncd1190; 372 373 if (sbus_bus_map(sa->sa_bustag, 374 sa->sa_slot, sa->sa_offset, sa->sa_size, 375 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 376 aprint_error("%s @ sbus: cannot map registers\n", 377 device_xname(self)); 378 return; 379 } 380 381 /* the SVCACK* lines are daisychained */ 382 sc->ms_svcackr = (char *)bus_space_vaddr(sa->sa_bustag, bh) 383 + card->mb_svcackr; 384 sc->ms_svcackt = (char *)bus_space_vaddr(sa->sa_bustag, bh) 385 + card->mb_svcackt; 386 sc->ms_svcackm = (char *)bus_space_vaddr(sa->sa_bustag, bh) 387 + card->mb_svcackm; 388 389 /* 390 * Find the clock speed; it's the same for all CD1400 chips 391 * on the board. 392 */ 393 clockstr = prom_getpropstring(node, "clock"); 394 if (*clockstr == '\0') 395 /* Default to 25MHz */ 396 cd_clock = 25; 397 else { 398 cd_clock = 0; 399 while (*clockstr != '\0') 400 cd_clock = (cd_clock * 10) + (*clockstr++ - '0'); 401 } 402 403 /* init the cd1400 chips */ 404 for( chip = 0 ; chip < card->mb_ncd1400 ; chip++ ) { 405 struct cd1400 *cd = &sc->ms_cd1400[chip]; 406 407 cd->cd_clock = cd_clock; 408 cd->cd_reg = (char *)bus_space_vaddr(sa->sa_bustag, bh) + 409 card->mb_cd1400[chip]; 410 411 /* prom_getpropstring(node, "chiprev"); */ 412 /* seemingly the Magma drivers just ignore the propstring */ 413 cd->cd_chiprev = cd1400_read_reg(cd, CD1400_GFRCR); 414 415 dprintf(("%s attach CD1400 %d addr %p rev %x clock %dMHz\n", 416 device_xname(&sc->ms_dev), chip, 417 cd->cd_reg, cd->cd_chiprev, cd->cd_clock)); 418 419 /* clear GFRCR */ 420 cd1400_write_reg(cd, CD1400_GFRCR, 0x00); 421 422 /* reset whole chip */ 423 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET | CD1400_CCR_FULLRESET); 424 425 /* wait for revision code to be restored */ 426 while( cd1400_read_reg(cd, CD1400_GFRCR) != cd->cd_chiprev ) 427 ; 428 429 /* set the Prescaler Period Register to tick at 1ms */ 430 cd1400_write_reg(cd, CD1400_PPR, 431 ((cd->cd_clock * 1000000 / CD1400_PPR_PRESCALER + 500) / 1000)); 432 433 /* The LC2+1Sp card is the only card that doesn't have 434 * a CD1190 for the parallel port, but uses channel 0 of 435 * the CD1400, so we make a note of it for later and set up 436 * the CD1400 for parallel mode operation. 437 */ 438 if( card->mb_npar && card->mb_ncd1190 == 0 ) { 439 cd1400_write_reg(cd, CD1400_GCR, CD1400_GCR_PARALLEL); 440 cd->cd_parmode = 1; 441 } 442 } 443 444 /* init the cd1190 chips */ 445 for( chip = 0 ; chip < card->mb_ncd1190 ; chip++ ) { 446 struct cd1190 *cd = &sc->ms_cd1190[chip]; 447 448 cd->cd_reg = (char *)bus_space_vaddr(sa->sa_bustag, bh) + 449 card->mb_cd1190[chip]; 450 451 /* XXX don't know anything about these chips yet */ 452 printf("%s: CD1190 %d addr %p (unsupported)\n", 453 device_xname(self), chip, cd->cd_reg); 454 } 455 456 /* configure the children */ 457 (void)config_found(self, mtty_match, NULL); 458 (void)config_found(self, mbpp_match, NULL); 459 460 /* 461 * Establish the interrupt handlers. 462 */ 463 if (sa->sa_nintr == 0) 464 return; /* No interrupts to service!? */ 465 466 (void)bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_SERIAL, 467 magma_hard, sc); 468 sc->ms_sicookie = softint_establish(SOFTINT_SERIAL, magma_soft, sc); 469 if (sc->ms_sicookie == NULL) { 470 aprint_normal("\n"); 471 aprint_error_dev(&sc->ms_dev, "cannot establish soft int handler\n"); 472 return; 473 } 474 evcnt_attach_dynamic(&sc->ms_intrcnt, EVCNT_TYPE_INTR, NULL, 475 device_xname(&sc->ms_dev), "intr"); 476 } 477 478 /* 479 * hard interrupt routine 480 * 481 * returns 1 if it handled it, otherwise 0 482 * 483 * runs at IPL_SERIAL 484 */ 485 int 486 magma_hard(void *arg) 487 { 488 struct magma_softc *sc = arg; 489 struct cd1400 *cd; 490 int chip, status = 0; 491 int serviced = 0; 492 int needsoftint = 0; 493 494 /* 495 * check status of all the CD1400 chips 496 */ 497 for( chip = 0 ; chip < sc->ms_ncd1400 ; chip++ ) 498 status |= cd1400_read_reg(&sc->ms_cd1400[chip], CD1400_SVRR); 499 500 if( ISSET(status, CD1400_SVRR_RXRDY) ) { 501 u_char rivr = *sc->ms_svcackr; /* enter rx service context */ 502 int port = rivr >> 4; 503 504 if( rivr & (1<<3) ) { /* parallel port */ 505 struct mbpp_port *mbpp; 506 int n_chars; 507 508 mbpp = &sc->ms_mbpp->ms_port[port]; 509 cd = mbpp->mp_cd1400; 510 511 /* don't think we have to handle exceptions */ 512 n_chars = cd1400_read_reg(cd, CD1400_RDCR); 513 while (n_chars--) { 514 if( mbpp->mp_cnt == 0 ) { 515 SET(mbpp->mp_flags, MBPPF_WAKEUP); 516 needsoftint = 1; 517 break; 518 } 519 *mbpp->mp_ptr = cd1400_read_reg(cd,CD1400_RDSR); 520 mbpp->mp_ptr++; 521 mbpp->mp_cnt--; 522 } 523 } else { /* serial port */ 524 struct mtty_port *mtty; 525 u_char *ptr, n_chars, line_stat; 526 527 mtty = &sc->ms_mtty->ms_port[port]; 528 cd = mtty->mp_cd1400; 529 530 if( ISSET(rivr, CD1400_RIVR_EXCEPTION) ) { 531 line_stat = cd1400_read_reg(cd, CD1400_RDSR); 532 n_chars = 1; 533 } else { /* no exception, received data OK */ 534 line_stat = 0; 535 n_chars = cd1400_read_reg(cd, CD1400_RDCR); 536 } 537 538 ptr = mtty->mp_rput; 539 while( n_chars-- ) { 540 *ptr++ = line_stat; 541 *ptr++ = cd1400_read_reg(cd, CD1400_RDSR); 542 if( ptr == mtty->mp_rend ) ptr = mtty->mp_rbuf; 543 if( ptr == mtty->mp_rget ) { 544 if( ptr == mtty->mp_rbuf ) 545 ptr = mtty->mp_rend; 546 ptr -= 2; 547 SET(mtty->mp_flags, MTTYF_RING_OVERFLOW); 548 break; 549 } 550 } 551 mtty->mp_rput = ptr; 552 553 needsoftint = 1; 554 } 555 556 cd1400_write_reg(cd, CD1400_EOSRR, 0); /* end service context */ 557 serviced = 1; 558 } /* if(rx_service...) */ 559 560 if( ISSET(status, CD1400_SVRR_MDMCH) ) { 561 u_char mivr = *sc->ms_svcackm; /* enter mdm service context */ 562 int port = mivr >> 4; 563 struct mtty_port *mtty; 564 int carrier; 565 u_char msvr; 566 567 /* 568 * Handle CD (LC2+1Sp = DSR) changes. 569 */ 570 mtty = &sc->ms_mtty->ms_port[port]; 571 cd = mtty->mp_cd1400; 572 msvr = cd1400_read_reg(cd, CD1400_MSVR2); 573 carrier = ISSET(msvr, cd->cd_parmode ? CD1400_MSVR2_DSR : CD1400_MSVR2_CD); 574 575 if( mtty->mp_carrier != carrier ) { 576 SET(mtty->mp_flags, MTTYF_CARRIER_CHANGED); 577 mtty->mp_carrier = carrier; 578 needsoftint = 1; 579 } 580 581 cd1400_write_reg(cd, CD1400_EOSRR, 0); /* end service context */ 582 serviced = 1; 583 } /* if(mdm_service...) */ 584 585 if( ISSET(status, CD1400_SVRR_TXRDY) ) { 586 u_char tivr = *sc->ms_svcackt; /* enter tx service context */ 587 int port = tivr >> 4; 588 589 if( tivr & (1<<3) ) { /* parallel port */ 590 struct mbpp_port *mbpp; 591 592 mbpp = &sc->ms_mbpp->ms_port[port]; 593 cd = mbpp->mp_cd1400; 594 595 if( mbpp->mp_cnt ) { 596 int count = 0; 597 598 /* fill the fifo */ 599 while (mbpp->mp_cnt && 600 count++ < CD1400_PAR_FIFO_SIZE) { 601 cd1400_write_reg(cd, CD1400_TDR, 602 *mbpp->mp_ptr); 603 mbpp->mp_ptr++; 604 mbpp->mp_cnt--; 605 } 606 } else { 607 /* 608 * fifo is empty and we got no more data 609 * to send, so shut off interrupts and 610 * signal for a wakeup, which can't be 611 * done here in case we beat mbpp_send to 612 * the tsleep call (we are running at >spltty) 613 */ 614 cd1400_write_reg(cd, CD1400_SRER, 0); 615 SET(mbpp->mp_flags, MBPPF_WAKEUP); 616 needsoftint = 1; 617 } 618 } else { /* serial port */ 619 struct mtty_port *mtty; 620 struct tty *tp; 621 622 mtty = &sc->ms_mtty->ms_port[port]; 623 cd = mtty->mp_cd1400; 624 tp = mtty->mp_tty; 625 626 if( !ISSET(mtty->mp_flags, MTTYF_STOP) ) { 627 int count = 0; 628 629 /* check if we should start/stop a break */ 630 if( ISSET(mtty->mp_flags, MTTYF_SET_BREAK) ) { 631 cd1400_write_reg(cd, CD1400_TDR, 0); 632 cd1400_write_reg(cd, CD1400_TDR, 0x81); 633 /* should we delay too? */ 634 CLR(mtty->mp_flags, MTTYF_SET_BREAK); 635 count += 2; 636 } 637 638 if( ISSET(mtty->mp_flags, MTTYF_CLR_BREAK) ) { 639 cd1400_write_reg(cd, CD1400_TDR, 0); 640 cd1400_write_reg(cd, CD1400_TDR, 0x83); 641 CLR(mtty->mp_flags, MTTYF_CLR_BREAK); 642 count += 2; 643 } 644 645 /* I don't quite fill the fifo in case the last one is a 646 * NULL which I have to double up because its the escape 647 * code for embedded transmit characters. 648 */ 649 while( mtty->mp_txc > 0 && count < CD1400_TX_FIFO_SIZE - 1 ) { 650 u_char ch; 651 652 ch = *mtty->mp_txp; 653 654 mtty->mp_txc--; 655 mtty->mp_txp++; 656 657 if( ch == 0 ) { 658 cd1400_write_reg(cd, CD1400_TDR, ch); 659 count++; 660 } 661 662 cd1400_write_reg(cd, CD1400_TDR, ch); 663 count++; 664 } 665 } 666 667 /* if we ran out of work or are requested to STOP then 668 * shut off the txrdy interrupts and signal DONE to flush 669 * out the chars we have sent. 670 */ 671 if( mtty->mp_txc == 0 || ISSET(mtty->mp_flags, MTTYF_STOP) ) { 672 register int srer; 673 674 srer = cd1400_read_reg(cd, CD1400_SRER); 675 CLR(srer, CD1400_SRER_TXRDY); 676 cd1400_write_reg(cd, CD1400_SRER, srer); 677 CLR(mtty->mp_flags, MTTYF_STOP); 678 679 SET(mtty->mp_flags, MTTYF_DONE); 680 needsoftint = 1; 681 } 682 } 683 684 cd1400_write_reg(cd, CD1400_EOSRR, 0); /* end service context */ 685 serviced = 1; 686 } /* if(tx_service...) */ 687 688 /* XXX service CD1190 interrupts too 689 for( chip = 0 ; chip < sc->ms_ncd1190 ; chip++ ) { 690 } 691 */ 692 693 if (needsoftint) 694 /* trigger the soft interrupt */ 695 softint_schedule(sc->ms_sicookie); 696 697 return(serviced); 698 } 699 700 /* 701 * magma soft interrupt handler 702 * 703 * runs at IPL_SOFTSERIAL 704 */ 705 void 706 magma_soft(void *arg) 707 { 708 struct magma_softc *sc = arg; 709 struct mtty_softc *mtty = sc->ms_mtty; 710 struct mbpp_softc *mbpp = sc->ms_mbpp; 711 int port; 712 int s, flags; 713 714 if (mtty == NULL) 715 goto chkbpp; 716 717 /* 718 * check the tty ports to see what needs doing 719 */ 720 for( port = 0 ; port < mtty->ms_nports ; port++ ) { 721 struct mtty_port *mp = &mtty->ms_port[port]; 722 struct tty *tp = mp->mp_tty; 723 724 if( !ISSET(tp->t_state, TS_ISOPEN) ) 725 continue; 726 727 /* 728 * handle any received data 729 */ 730 while( mp->mp_rget != mp->mp_rput ) { 731 u_char stat; 732 int data; 733 734 stat = mp->mp_rget[0]; 735 data = mp->mp_rget[1]; 736 mp->mp_rget = ((mp->mp_rget + 2) == mp->mp_rend) 737 ? mp->mp_rbuf : (mp->mp_rget + 2); 738 739 if( stat & (CD1400_RDSR_BREAK | CD1400_RDSR_FE) ) 740 data |= TTY_FE; 741 if( stat & CD1400_RDSR_PE ) 742 data |= TTY_PE; 743 744 if( stat & CD1400_RDSR_OE ) 745 log(LOG_WARNING, "%s%x: fifo overflow\n", 746 device_xname(&mtty->ms_dev), port); 747 748 (*tp->t_linesw->l_rint)(data, tp); 749 } 750 751 s = splserial(); /* block out hard interrupt routine */ 752 flags = mp->mp_flags; 753 CLR(mp->mp_flags, MTTYF_DONE | MTTYF_CARRIER_CHANGED | MTTYF_RING_OVERFLOW); 754 splx(s); /* ok */ 755 756 if( ISSET(flags, MTTYF_CARRIER_CHANGED) ) { 757 dprintf(("%s%x: cd %s\n", device_xname(&mtty->ms_dev), 758 port, mp->mp_carrier ? "on" : "off")); 759 (*tp->t_linesw->l_modem)(tp, mp->mp_carrier); 760 } 761 762 if( ISSET(flags, MTTYF_RING_OVERFLOW) ) { 763 log(LOG_WARNING, "%s%x: ring buffer overflow\n", 764 device_xname(&mtty->ms_dev), port); 765 } 766 767 if( ISSET(flags, MTTYF_DONE) ) { 768 ndflush(&tp->t_outq, mp->mp_txp - tp->t_outq.c_cf); 769 CLR(tp->t_state, TS_BUSY); 770 (*tp->t_linesw->l_start)(tp); /* might be some more */ 771 } 772 } /* for(each mtty...) */ 773 774 775 chkbpp: 776 /* 777 * Check the bpp ports (if any) to see what needs doing 778 */ 779 if (mbpp == NULL) 780 return; 781 782 for( port = 0 ; port < mbpp->ms_nports ; port++ ) { 783 struct mbpp_port *mp = &mbpp->ms_port[port]; 784 785 if( !ISSET(mp->mp_flags, MBPPF_OPEN) ) 786 continue; 787 788 s = splserial(); 789 flags = mp->mp_flags; 790 CLR(mp->mp_flags, MBPPF_WAKEUP); 791 splx(s); 792 793 if( ISSET(flags, MBPPF_WAKEUP) ) { 794 wakeup(mp); 795 } 796 797 } /* for(each mbpp...) */ 798 } 799 800 /************************************************************************ 801 * 802 * MTTY Routines 803 * 804 * mtty_match match one mtty device 805 * mtty_attach attach mtty devices 806 * mttyopen open mtty device 807 * mttyclose close mtty device 808 * mttyread read from mtty 809 * mttywrite write to mtty 810 * mttyioctl do ioctl on mtty 811 * mttytty return tty pointer for mtty 812 * mttystop stop mtty device 813 * mtty_start start mtty device 814 * mtty_param set mtty parameters 815 * mtty_modem_control set modem control lines 816 */ 817 818 int 819 mtty_match(device_t parent, cfdata_t cf, void *args) 820 { 821 struct magma_softc *sc = device_private(parent); 822 823 return( args == mtty_match && sc->ms_board->mb_nser && sc->ms_mtty == NULL ); 824 } 825 826 void 827 mtty_attach(device_t parent, device_t dev, void *args) 828 { 829 struct magma_softc *sc = device_private(parent); 830 struct mtty_softc *ms = device_private(dev); 831 int port, chip, chan; 832 833 sc->ms_mtty = ms; 834 dprintf((" addr %p", ms)); 835 836 for( port = 0, chip = 0, chan = 0 ; port < sc->ms_board->mb_nser ; port++ ) { 837 struct mtty_port *mp = &ms->ms_port[port]; 838 struct tty *tp; 839 840 mp->mp_cd1400 = &sc->ms_cd1400[chip]; 841 if (mp->mp_cd1400->cd_parmode && chan == 0) 842 chan = 1; /* skip channel 0 if parmode */ 843 mp->mp_channel = chan; 844 845 tp = tty_alloc(); 846 if (tp == NULL) { 847 break; 848 } 849 tty_attach(tp); 850 tp->t_oproc = mtty_start; 851 tp->t_param = mtty_param; 852 853 mp->mp_tty = tp; 854 855 mp->mp_rbuf = malloc(MTTY_RBUF_SIZE, M_DEVBUF, M_NOWAIT); 856 if (mp->mp_rbuf == NULL) break; 857 858 mp->mp_rend = mp->mp_rbuf + MTTY_RBUF_SIZE; 859 860 chan = (chan + 1) % CD1400_NO_OF_CHANNELS; 861 if (chan == 0) 862 chip++; 863 } 864 865 ms->ms_nports = port; 866 printf(": %d tty%s\n", port, port == 1 ? "" : "s"); 867 } 868 869 /* 870 * open routine. returns zero if successful, else error code 871 */ 872 int 873 mttyopen(dev_t dev, int flags, int mode, struct lwp *l) 874 { 875 int card = MAGMA_CARD(dev); 876 int port = MAGMA_PORT(dev); 877 struct mtty_softc *ms; 878 struct mtty_port *mp; 879 struct tty *tp; 880 struct cd1400 *cd; 881 int error, s; 882 883 if ((ms = device_lookup_private(&mtty_cd, card)) == NULL 884 || port >= ms->ms_nports ) 885 return(ENXIO); /* device not configured */ 886 887 mp = &ms->ms_port[port]; 888 tp = mp->mp_tty; 889 tp->t_dev = dev; 890 891 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 892 return (EBUSY); 893 894 s = spltty(); 895 896 if( !ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 897 898 /* set defaults */ 899 ttychars(tp); 900 tp->t_iflag = TTYDEF_IFLAG; 901 tp->t_oflag = TTYDEF_OFLAG; 902 tp->t_cflag = TTYDEF_CFLAG; 903 if( ISSET(mp->mp_openflags, TIOCFLAG_CLOCAL) ) 904 SET(tp->t_cflag, CLOCAL); 905 if( ISSET(mp->mp_openflags, TIOCFLAG_CRTSCTS) ) 906 SET(tp->t_cflag, CRTSCTS); 907 if( ISSET(mp->mp_openflags, TIOCFLAG_MDMBUF) ) 908 SET(tp->t_cflag, MDMBUF); 909 tp->t_lflag = TTYDEF_LFLAG; 910 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 911 912 /* init ring buffer */ 913 mp->mp_rput = mp->mp_rget = mp->mp_rbuf; 914 915 /* reset CD1400 channel */ 916 cd = mp->mp_cd1400; 917 cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); 918 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET); 919 920 /* encode the port number in top half of LIVR */ 921 cd1400_write_reg(cd, CD1400_LIVR, port << 4 ); 922 923 /* sets parameters and raises DTR */ 924 (void)mtty_param(tp, &tp->t_termios); 925 926 /* set tty watermarks */ 927 ttsetwater(tp); 928 929 /* enable service requests */ 930 cd1400_write_reg(cd, CD1400_SRER, 931 CD1400_SRER_RXDATA | CD1400_SRER_MDMCH); 932 933 /* tell the tty about the carrier status */ 934 if( ISSET(mp->mp_openflags, TIOCFLAG_SOFTCAR) || 935 mp->mp_carrier ) 936 SET(tp->t_state, TS_CARR_ON); 937 else 938 CLR(tp->t_state, TS_CARR_ON); 939 } 940 splx(s); 941 942 error = ttyopen(tp, MTTY_DIALOUT(dev), ISSET(flags, O_NONBLOCK)); 943 if (error != 0) 944 goto bad; 945 946 error = (*tp->t_linesw->l_open)(dev, tp); 947 if (error != 0) 948 goto bad; 949 950 bad: 951 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 952 /* 953 * We failed to open the device, and nobody else had it opened. 954 * Clean up the state as appropriate. 955 */ 956 /* XXX - do that here */ 957 } 958 959 return (error); 960 } 961 962 /* 963 * close routine. returns zero if successful, else error code 964 */ 965 int 966 mttyclose(dev_t dev, int flag, int mode, struct lwp *l) 967 { 968 struct mtty_softc *ms = device_lookup_private(&mtty_cd, 969 MAGMA_CARD(dev)); 970 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 971 struct tty *tp = mp->mp_tty; 972 int s; 973 974 (*tp->t_linesw->l_close)(tp, flag); 975 ttyclose(tp); 976 977 s = spltty(); 978 979 /* if HUPCL is set, and the tty is no longer open 980 * shut down the port 981 */ 982 if( ISSET(tp->t_cflag, HUPCL) || !ISSET(tp->t_state, TS_ISOPEN) ) { 983 /* XXX wait until FIFO is empty before turning off the channel 984 struct cd1400 *cd = mp->mp_cd1400; 985 */ 986 987 /* drop DTR and RTS */ 988 (void)mtty_modem_control(mp, 0, DMSET); 989 990 /* turn off the channel 991 cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); 992 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET); 993 */ 994 } 995 996 splx(s); 997 998 return(0); 999 } 1000 1001 /* 1002 * Read routine 1003 */ 1004 int 1005 mttyread(dev_t dev, struct uio *uio, int flags) 1006 { 1007 struct mtty_softc *ms = device_lookup_private(&mtty_cd, 1008 MAGMA_CARD(dev)); 1009 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1010 struct tty *tp = mp->mp_tty; 1011 1012 return( (*tp->t_linesw->l_read)(tp, uio, flags) ); 1013 } 1014 1015 /* 1016 * Write routine 1017 */ 1018 int 1019 mttywrite(dev_t dev, struct uio *uio, int flags) 1020 { 1021 struct mtty_softc *ms = device_lookup_private(&mtty_cd, 1022 MAGMA_CARD(dev)); 1023 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1024 struct tty *tp = mp->mp_tty; 1025 1026 return( (*tp->t_linesw->l_write)(tp, uio, flags) ); 1027 } 1028 1029 /* 1030 * Poll routine 1031 */ 1032 int 1033 mttypoll(dev_t dev, int events, struct lwp *l) 1034 { 1035 struct mtty_softc *ms = device_lookup_private(&mtty_cd, 1036 MAGMA_CARD(dev)); 1037 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1038 struct tty *tp = mp->mp_tty; 1039 1040 return ((*tp->t_linesw->l_poll)(tp, events, l)); 1041 } 1042 1043 /* 1044 * return tty pointer 1045 */ 1046 struct tty * 1047 mttytty(dev_t dev) 1048 { 1049 struct mtty_softc *ms = device_lookup_private(&mtty_cd, 1050 MAGMA_CARD(dev)); 1051 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1052 1053 return(mp->mp_tty); 1054 } 1055 1056 /* 1057 * ioctl routine 1058 */ 1059 int 1060 mttyioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 1061 { 1062 struct mtty_softc *ms = device_lookup_private(&mtty_cd, 1063 MAGMA_CARD(dev)); 1064 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1065 struct tty *tp = mp->mp_tty; 1066 int error; 1067 1068 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, l); 1069 if( error != EPASSTHROUGH ) return(error); 1070 1071 error = ttioctl(tp, cmd, data, flags, l); 1072 if( error != EPASSTHROUGH ) return(error); 1073 1074 error = 0; 1075 1076 switch(cmd) { 1077 case TIOCSBRK: /* set break */ 1078 SET(mp->mp_flags, MTTYF_SET_BREAK); 1079 cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel); 1080 break; 1081 1082 case TIOCCBRK: /* clear break */ 1083 SET(mp->mp_flags, MTTYF_CLR_BREAK); 1084 cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel); 1085 break; 1086 1087 case TIOCSDTR: /* set DTR */ 1088 mtty_modem_control(mp, TIOCM_DTR, DMBIS); 1089 break; 1090 1091 case TIOCCDTR: /* clear DTR */ 1092 mtty_modem_control(mp, TIOCM_DTR, DMBIC); 1093 break; 1094 1095 case TIOCMSET: /* set modem lines */ 1096 mtty_modem_control(mp, *((int *)data), DMSET); 1097 break; 1098 1099 case TIOCMBIS: /* bit set modem lines */ 1100 mtty_modem_control(mp, *((int *)data), DMBIS); 1101 break; 1102 1103 case TIOCMBIC: /* bit clear modem lines */ 1104 mtty_modem_control(mp, *((int *)data), DMBIC); 1105 break; 1106 1107 case TIOCMGET: /* get modem lines */ 1108 *((int *)data) = mtty_modem_control(mp, 0, DMGET); 1109 break; 1110 1111 case TIOCGFLAGS: 1112 *((int *)data) = mp->mp_openflags; 1113 break; 1114 1115 case TIOCSFLAGS: 1116 if (kauth_authorize_device_tty(l->l_cred, 1117 KAUTH_DEVICE_TTY_PRIVSET, tp)) 1118 error = EPERM; 1119 else 1120 mp->mp_openflags = *((int *)data) & 1121 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 1122 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 1123 break; 1124 1125 default: 1126 error = EPASSTHROUGH; 1127 } 1128 1129 return(error); 1130 } 1131 1132 /* 1133 * Stop output, e.g., for ^S or output flush. 1134 */ 1135 void 1136 mttystop(struct tty *tp, int flags) 1137 { 1138 struct mtty_softc *ms = device_lookup_private(&mtty_cd, 1139 MAGMA_CARD(tp->t_dev)); 1140 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)]; 1141 int s; 1142 1143 s = spltty(); 1144 1145 if( ISSET(tp->t_state, TS_BUSY) ) { 1146 if( !ISSET(tp->t_state, TS_TTSTOP) ) 1147 SET(tp->t_state, TS_FLUSH); 1148 1149 /* 1150 * the transmit interrupt routine will disable transmit when it 1151 * notices that MTTYF_STOP has been set. 1152 */ 1153 SET(mp->mp_flags, MTTYF_STOP); 1154 } 1155 1156 splx(s); 1157 } 1158 1159 /* 1160 * Start output, after a stop. 1161 */ 1162 void 1163 mtty_start(struct tty *tp) 1164 { 1165 struct mtty_softc *ms = device_lookup_private(&mtty_cd, 1166 MAGMA_CARD(tp->t_dev)); 1167 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)]; 1168 int s; 1169 1170 s = spltty(); 1171 1172 /* we only need to do something if we are not already busy 1173 * or delaying or stopped 1174 */ 1175 if( !ISSET(tp->t_state, TS_TTSTOP | TS_TIMEOUT | TS_BUSY) ) { 1176 if (ttypull(tp)) { 1177 mp->mp_txc = ndqb(&tp->t_outq, 0); 1178 mp->mp_txp = tp->t_outq.c_cf; 1179 SET(tp->t_state, TS_BUSY); 1180 cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel); 1181 } 1182 } 1183 1184 splx(s); 1185 } 1186 1187 /* 1188 * set/get modem line status 1189 * 1190 * bits can be: TIOCM_DTR, TIOCM_RTS, TIOCM_CTS, TIOCM_CD, TIOCM_RI, TIOCM_DSR 1191 * 1192 * note that DTR and RTS lines are exchanged, and that DSR is 1193 * not available on the LC2+1Sp card (used as CD) 1194 * 1195 * only let them fiddle with RTS if CRTSCTS is not enabled 1196 */ 1197 int 1198 mtty_modem_control(struct mtty_port *mp, int bits, int howto) 1199 { 1200 struct cd1400 *cd = mp->mp_cd1400; 1201 struct tty *tp = mp->mp_tty; 1202 int s, msvr; 1203 1204 s = spltty(); 1205 1206 cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); 1207 1208 switch(howto) { 1209 case DMGET: /* get bits */ 1210 bits = 0; 1211 1212 bits |= TIOCM_LE; 1213 1214 msvr = cd1400_read_reg(cd, CD1400_MSVR1); 1215 if( msvr & CD1400_MSVR1_RTS ) bits |= TIOCM_DTR; 1216 1217 msvr = cd1400_read_reg(cd, CD1400_MSVR2); 1218 if( msvr & CD1400_MSVR2_DTR ) bits |= TIOCM_RTS; 1219 if( msvr & CD1400_MSVR2_CTS ) bits |= TIOCM_CTS; 1220 if( msvr & CD1400_MSVR2_RI ) bits |= TIOCM_RI; 1221 if( msvr & CD1400_MSVR2_DSR ) bits |= (cd->cd_parmode ? TIOCM_CD : TIOCM_DSR); 1222 if( msvr & CD1400_MSVR2_CD ) bits |= (cd->cd_parmode ? 0 : TIOCM_CD); 1223 1224 break; 1225 1226 case DMSET: /* reset bits */ 1227 if( !ISSET(tp->t_cflag, CRTSCTS) ) 1228 cd1400_write_reg(cd, CD1400_MSVR2, ((bits & TIOCM_RTS) ? CD1400_MSVR2_DTR : 0)); 1229 1230 cd1400_write_reg(cd, CD1400_MSVR1, ((bits & TIOCM_DTR) ? CD1400_MSVR1_RTS : 0)); 1231 1232 break; 1233 1234 case DMBIS: /* set bits */ 1235 if( (bits & TIOCM_RTS) && !ISSET(tp->t_cflag, CRTSCTS) ) 1236 cd1400_write_reg(cd, CD1400_MSVR2, CD1400_MSVR2_DTR); 1237 1238 if( bits & TIOCM_DTR ) 1239 cd1400_write_reg(cd, CD1400_MSVR1, CD1400_MSVR1_RTS); 1240 1241 break; 1242 1243 case DMBIC: /* clear bits */ 1244 if( (bits & TIOCM_RTS) && !ISSET(tp->t_cflag, CRTSCTS) ) 1245 cd1400_write_reg(cd, CD1400_MSVR2, 0); 1246 1247 if( bits & TIOCM_DTR ) 1248 cd1400_write_reg(cd, CD1400_MSVR1, 0); 1249 1250 break; 1251 } 1252 1253 splx(s); 1254 return(bits); 1255 } 1256 1257 /* 1258 * Set tty parameters, returns error or 0 on success 1259 */ 1260 int 1261 mtty_param(struct tty *tp, struct termios *t) 1262 { 1263 struct mtty_softc *ms = device_lookup_private(&mtty_cd, 1264 MAGMA_CARD(tp->t_dev)); 1265 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)]; 1266 struct cd1400 *cd = mp->mp_cd1400; 1267 int rbpr, tbpr, rcor, tcor; 1268 u_char mcor1 = 0, mcor2 = 0; 1269 int s, opt; 1270 1271 if( t->c_ospeed && cd1400_compute_baud(t->c_ospeed, cd->cd_clock, &tcor, &tbpr) ) 1272 return(EINVAL); 1273 1274 if( t->c_ispeed && cd1400_compute_baud(t->c_ispeed, cd->cd_clock, &rcor, &rbpr) ) 1275 return(EINVAL); 1276 1277 s = spltty(); 1278 1279 /* hang up the line if ospeed is zero, else raise DTR */ 1280 (void)mtty_modem_control(mp, TIOCM_DTR, (t->c_ospeed == 0 ? DMBIC : DMBIS)); 1281 1282 /* select channel, done in mtty_modem_control() */ 1283 /* cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); */ 1284 1285 /* set transmit speed */ 1286 if( t->c_ospeed ) { 1287 cd1400_write_reg(cd, CD1400_TCOR, tcor); 1288 cd1400_write_reg(cd, CD1400_TBPR, tbpr); 1289 } 1290 1291 /* set receive speed */ 1292 if( t->c_ispeed ) { 1293 cd1400_write_reg(cd, CD1400_RCOR, rcor); 1294 cd1400_write_reg(cd, CD1400_RBPR, rbpr); 1295 } 1296 1297 /* enable transmitting and receiving on this channel */ 1298 opt = CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTEN | CD1400_CCR_RCVEN; 1299 cd1400_write_ccr(cd, opt); 1300 1301 /* set parity, data and stop bits */ 1302 opt = 0; 1303 if( ISSET(t->c_cflag, PARENB) ) 1304 opt |= (ISSET(t->c_cflag, PARODD) ? CD1400_COR1_PARODD : CD1400_COR1_PARNORMAL); 1305 1306 if( !ISSET(t->c_iflag, INPCK) ) 1307 opt |= CD1400_COR1_NOINPCK; /* no parity checking */ 1308 1309 if( ISSET(t->c_cflag, CSTOPB) ) 1310 opt |= CD1400_COR1_STOP2; 1311 1312 switch( t->c_cflag & CSIZE ) { 1313 case CS5: 1314 opt |= CD1400_COR1_CS5; 1315 break; 1316 1317 case CS6: 1318 opt |= CD1400_COR1_CS6; 1319 break; 1320 1321 case CS7: 1322 opt |= CD1400_COR1_CS7; 1323 break; 1324 1325 default: 1326 opt |= CD1400_COR1_CS8; 1327 break; 1328 } 1329 1330 cd1400_write_reg(cd, CD1400_COR1, opt); 1331 1332 /* 1333 * enable Embedded Transmit Commands (for breaks) 1334 * use the CD1400 automatic CTS flow control if CRTSCTS is set 1335 */ 1336 opt = CD1400_COR2_ETC; 1337 if( ISSET(t->c_cflag, CRTSCTS) ) opt |= CD1400_COR2_CCTS_OFLOW; 1338 cd1400_write_reg(cd, CD1400_COR2, opt); 1339 1340 cd1400_write_reg(cd, CD1400_COR3, MTTY_RX_FIFO_THRESHOLD); 1341 1342 cd1400_write_ccr(cd, CD1400_CCR_CMDCORCHG | CD1400_CCR_COR1 | CD1400_CCR_COR2 | CD1400_CCR_COR3); 1343 1344 cd1400_write_reg(cd, CD1400_COR4, CD1400_COR4_PFO_EXCEPTION); 1345 cd1400_write_reg(cd, CD1400_COR5, 0); 1346 1347 /* 1348 * if automatic RTS handshaking enabled, set DTR threshold 1349 * (RTS and DTR lines are switched, CD1400 thinks its DTR) 1350 */ 1351 if( ISSET(t->c_cflag, CRTSCTS) ) 1352 mcor1 = MTTY_RX_DTR_THRESHOLD; 1353 1354 /* set up `carrier detect' interrupts */ 1355 if( cd->cd_parmode ) { 1356 SET(mcor1, CD1400_MCOR1_DSRzd); 1357 SET(mcor2, CD1400_MCOR2_DSRod); 1358 } else { 1359 SET(mcor1, CD1400_MCOR1_CDzd); 1360 SET(mcor2, CD1400_MCOR2_CDod); 1361 } 1362 1363 cd1400_write_reg(cd, CD1400_MCOR1, mcor1); 1364 cd1400_write_reg(cd, CD1400_MCOR2, mcor2); 1365 1366 /* receive timeout 2ms */ 1367 cd1400_write_reg(cd, CD1400_RTPR, 2); 1368 1369 splx(s); 1370 return(0); 1371 } 1372 1373 /************************************************************************ 1374 * 1375 * MBPP Routines 1376 * 1377 * mbpp_match match one mbpp device 1378 * mbpp_attach attach mbpp devices 1379 * mbppopen open mbpp device 1380 * mbppclose close mbpp device 1381 * mbppioctl do ioctl on mbpp 1382 * mbpp_rw general rw routine 1383 * mbpp_timeout rw timeout 1384 * mbpp_start rw start after delay 1385 * mbpp_send send data 1386 * mbpp_recv recv data 1387 */ 1388 1389 int 1390 mbpp_match(device_t parent, cfdata_t cf, void *args) 1391 { 1392 struct magma_softc *sc = device_private(parent); 1393 1394 return( args == mbpp_match && sc->ms_board->mb_npar && sc->ms_mbpp == NULL ); 1395 } 1396 1397 void 1398 mbpp_attach(device_t parent, device_t dev, void *args) 1399 { 1400 struct magma_softc *sc = device_private(parent); 1401 struct mbpp_softc *ms = device_private(dev); 1402 struct mbpp_port *mp; 1403 int port; 1404 1405 sc->ms_mbpp = ms; 1406 dprintf((" addr %p", ms)); 1407 1408 for( port = 0 ; port < sc->ms_board->mb_npar ; port++ ) { 1409 mp = &ms->ms_port[port]; 1410 1411 callout_init(&mp->mp_timeout_ch, 0); 1412 callout_init(&mp->mp_start_ch, 0); 1413 1414 if( sc->ms_ncd1190 ) 1415 mp->mp_cd1190 = &sc->ms_cd1190[port]; 1416 else 1417 mp->mp_cd1400 = &sc->ms_cd1400[0]; 1418 } 1419 1420 ms->ms_nports = port; 1421 printf(": %d port%s\n", port, port == 1 ? "" : "s"); 1422 } 1423 1424 /* 1425 * open routine. returns zero if successful, else error code 1426 */ 1427 int 1428 mbppopen(dev_t dev, int flags, int mode, struct lwp *l) 1429 { 1430 int card = MAGMA_CARD(dev); 1431 int port = MAGMA_PORT(dev); 1432 struct mbpp_softc *ms; 1433 struct mbpp_port *mp; 1434 int s; 1435 1436 if ((ms = device_lookup_private(&mbpp_cd, card)) == NULL 1437 || port >= ms->ms_nports ) 1438 return(ENXIO); 1439 1440 mp = &ms->ms_port[port]; 1441 1442 s = spltty(); 1443 if( ISSET(mp->mp_flags, MBPPF_OPEN) ) { 1444 splx(s); 1445 return(EBUSY); 1446 } 1447 SET(mp->mp_flags, MBPPF_OPEN); 1448 splx(s); 1449 1450 /* set defaults */ 1451 mp->mp_burst = MBPP_BURST; 1452 mp->mp_timeout = mbpp_mstohz(MBPP_TIMEOUT); 1453 mp->mp_delay = mbpp_mstohz(MBPP_DELAY); 1454 1455 /* init chips */ 1456 if( mp->mp_cd1400 ) { /* CD1400 */ 1457 struct cd1400 *cd = mp->mp_cd1400; 1458 1459 /* set up CD1400 channel */ 1460 s = spltty(); 1461 cd1400_write_reg(cd, CD1400_CAR, 0); 1462 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET); 1463 cd1400_write_reg(cd, CD1400_LIVR, (1<<3)); 1464 splx(s); 1465 } else { /* CD1190 */ 1466 mp->mp_flags = 0; 1467 return (ENXIO); 1468 } 1469 1470 return (0); 1471 } 1472 1473 /* 1474 * close routine. returns zero if successful, else error code 1475 */ 1476 int 1477 mbppclose(dev_t dev, int flag, int mode, struct lwp *l) 1478 { 1479 struct mbpp_softc *ms = device_lookup_private(&mbpp_cd, 1480 MAGMA_CARD(dev)); 1481 struct mbpp_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1482 1483 mp->mp_flags = 0; 1484 return(0); 1485 } 1486 1487 /* 1488 * ioctl routine 1489 */ 1490 int 1491 mbppioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 1492 { 1493 struct mbpp_softc *ms = device_lookup_private(&mbpp_cd, 1494 MAGMA_CARD(dev)); 1495 struct mbpp_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1496 struct mbpp_param *bp; 1497 int error = 0; 1498 int s; 1499 1500 switch(cmd) { 1501 case MBPPIOCSPARAM: 1502 bp = (struct mbpp_param *)data; 1503 if( bp->bp_burst < MBPP_BURST_MIN || bp->bp_burst > MBPP_BURST_MAX || 1504 bp->bp_delay < MBPP_DELAY_MIN || bp->bp_delay > MBPP_DELAY_MIN ) { 1505 error = EINVAL; 1506 } else { 1507 mp->mp_burst = bp->bp_burst; 1508 mp->mp_timeout = mbpp_mstohz(bp->bp_timeout); 1509 mp->mp_delay = mbpp_mstohz(bp->bp_delay); 1510 } 1511 break; 1512 case MBPPIOCGPARAM: 1513 bp = (struct mbpp_param *)data; 1514 bp->bp_burst = mp->mp_burst; 1515 bp->bp_timeout = mbpp_hztoms(mp->mp_timeout); 1516 bp->bp_delay = mbpp_hztoms(mp->mp_delay); 1517 break; 1518 case MBPPIOCGSTAT: 1519 /* XXX make this more generic */ 1520 s = spltty(); 1521 cd1400_write_reg(mp->mp_cd1400, CD1400_CAR, 0); 1522 *(int *)data = cd1400_read_reg(mp->mp_cd1400, CD1400_PSVR); 1523 splx(s); 1524 break; 1525 default: 1526 error = ENOTTY; 1527 } 1528 1529 return(error); 1530 } 1531 1532 int 1533 mbpp_rw(dev_t dev, struct uio *uio, int flag) 1534 { 1535 int card = MAGMA_CARD(dev); 1536 int port = MAGMA_PORT(dev); 1537 struct mbpp_softc *ms = device_lookup_private(&mbpp_cd, card); 1538 struct mbpp_port *mp = &ms->ms_port[port]; 1539 char *buffer, *ptr; 1540 int buflen, cnt, len; 1541 int s, error = 0; 1542 int gotdata = 0; 1543 1544 if( uio->uio_resid == 0 ) 1545 return(0); 1546 1547 buflen = min(uio->uio_resid, mp->mp_burst); 1548 buffer = malloc(buflen, M_DEVBUF, M_WAITOK); 1549 if( buffer == NULL ) 1550 return(ENOMEM); 1551 1552 SET(mp->mp_flags, MBPPF_UIO); 1553 1554 /* 1555 * start timeout, if needed 1556 */ 1557 if( mp->mp_timeout > 0 ) { 1558 SET(mp->mp_flags, MBPPF_TIMEOUT); 1559 callout_reset(&mp->mp_timeout_ch, mp->mp_timeout, 1560 mbpp_timeout, mp); 1561 } 1562 1563 len = cnt = 0; 1564 while( uio->uio_resid > 0 ) { 1565 len = min(buflen, uio->uio_resid); 1566 ptr = buffer; 1567 1568 if( uio->uio_rw == UIO_WRITE ) { 1569 error = uiomove(ptr, len, uio); 1570 if( error ) break; 1571 } 1572 again: /* goto bad */ 1573 /* timed out? */ 1574 if( !ISSET(mp->mp_flags, MBPPF_UIO) ) 1575 break; 1576 1577 /* 1578 * perform the operation 1579 */ 1580 if( uio->uio_rw == UIO_WRITE ) { 1581 cnt = mbpp_send(mp, ptr, len); 1582 } else { 1583 cnt = mbpp_recv(mp, ptr, len); 1584 } 1585 1586 if( uio->uio_rw == UIO_READ ) { 1587 if( cnt ) { 1588 error = uiomove(ptr, cnt, uio); 1589 if( error ) break; 1590 gotdata++; 1591 } 1592 else if( gotdata ) /* consider us done */ 1593 break; 1594 } 1595 1596 /* timed out? */ 1597 if( !ISSET(mp->mp_flags, MBPPF_UIO) ) 1598 break; 1599 1600 /* 1601 * poll delay? 1602 */ 1603 if( mp->mp_delay > 0 ) { 1604 s = splsoftclock(); 1605 SET(mp->mp_flags, MBPPF_DELAY); 1606 callout_reset(&mp->mp_start_ch, mp->mp_delay, 1607 mbpp_start, mp); 1608 error = tsleep(mp, PCATCH | PZERO, "mbppdelay", 0); 1609 splx(s); 1610 if( error ) break; 1611 } 1612 1613 /* 1614 * don't call uiomove again until we used all the data we grabbed 1615 */ 1616 if( uio->uio_rw == UIO_WRITE && cnt != len ) { 1617 ptr += cnt; 1618 len -= cnt; 1619 cnt = 0; 1620 goto again; 1621 } 1622 } 1623 1624 /* 1625 * clear timeouts 1626 */ 1627 s = splsoftclock(); 1628 if( ISSET(mp->mp_flags, MBPPF_TIMEOUT) ) { 1629 callout_stop(&mp->mp_timeout_ch); 1630 CLR(mp->mp_flags, MBPPF_TIMEOUT); 1631 } 1632 if( ISSET(mp->mp_flags, MBPPF_DELAY) ) { 1633 callout_stop(&mp->mp_start_ch); 1634 CLR(mp->mp_flags, MBPPF_DELAY); 1635 } 1636 splx(s); 1637 1638 /* 1639 * adjust for those chars that we uiomoved but never actually wrote 1640 */ 1641 if( uio->uio_rw == UIO_WRITE && cnt != len ) { 1642 uio->uio_resid += (len - cnt); 1643 } 1644 1645 free(buffer, M_DEVBUF); 1646 return(error); 1647 } 1648 1649 void 1650 mbpp_timeout(void *arg) 1651 { 1652 struct mbpp_port *mp = arg; 1653 1654 CLR(mp->mp_flags, MBPPF_UIO | MBPPF_TIMEOUT); 1655 wakeup(mp); 1656 } 1657 1658 void 1659 mbpp_start(void *arg) 1660 { 1661 struct mbpp_port *mp = arg; 1662 1663 CLR(mp->mp_flags, MBPPF_DELAY); 1664 wakeup(mp); 1665 } 1666 1667 int 1668 mbpp_send(struct mbpp_port *mp, void *ptr, int len) 1669 { 1670 int s; 1671 struct cd1400 *cd = mp->mp_cd1400; 1672 1673 /* set up io information */ 1674 mp->mp_ptr = ptr; 1675 mp->mp_cnt = len; 1676 1677 /* start transmitting */ 1678 s = spltty(); 1679 if( cd ) { 1680 cd1400_write_reg(cd, CD1400_CAR, 0); 1681 1682 /* output strobe width ~1microsecond */ 1683 cd1400_write_reg(cd, CD1400_TBPR, 10); 1684 1685 /* enable channel */ 1686 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTEN); 1687 cd1400_write_reg(cd, CD1400_SRER, CD1400_SRER_TXRDY); 1688 } 1689 1690 /* ZZzzz... */ 1691 tsleep(mp, PCATCH | PZERO, "mbpp_send", 0); 1692 1693 /* stop transmitting */ 1694 if( cd ) { 1695 cd1400_write_reg(cd, CD1400_CAR, 0); 1696 1697 /* disable transmitter */ 1698 cd1400_write_reg(cd, CD1400_SRER, 0); 1699 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTDIS); 1700 1701 /* flush fifo */ 1702 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET | CD1400_CCR_FTF); 1703 } 1704 splx(s); 1705 1706 /* return number of chars sent */ 1707 return(len - mp->mp_cnt); 1708 } 1709 1710 int 1711 mbpp_recv(struct mbpp_port *mp, void *ptr, int len) 1712 { 1713 int s; 1714 struct cd1400 *cd = mp->mp_cd1400; 1715 1716 /* set up io information */ 1717 mp->mp_ptr = ptr; 1718 mp->mp_cnt = len; 1719 1720 /* start receiving */ 1721 s = spltty(); 1722 if( cd ) { 1723 int rcor, rbpr; 1724 1725 cd1400_write_reg(cd, CD1400_CAR, 0); 1726 1727 /* input strobe at 100kbaud (10microseconds) */ 1728 cd1400_compute_baud(100000, cd->cd_clock, &rcor, &rbpr); 1729 cd1400_write_reg(cd, CD1400_RCOR, rcor); 1730 cd1400_write_reg(cd, CD1400_RBPR, rbpr); 1731 1732 /* rx threshold */ 1733 cd1400_write_reg(cd, CD1400_COR3, MBPP_RX_FIFO_THRESHOLD); 1734 cd1400_write_ccr(cd, CD1400_CCR_CMDCORCHG | CD1400_CCR_COR3); 1735 1736 /* enable channel */ 1737 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_RCVEN); 1738 cd1400_write_reg(cd, CD1400_SRER, CD1400_SRER_RXDATA); 1739 } 1740 1741 /* ZZzzz... */ 1742 tsleep(mp, PCATCH | PZERO, "mbpp_recv", 0); 1743 1744 /* stop receiving */ 1745 if( cd ) { 1746 cd1400_write_reg(cd, CD1400_CAR, 0); 1747 1748 /* disable receiving */ 1749 cd1400_write_reg(cd, CD1400_SRER, 0); 1750 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_RCVDIS); 1751 } 1752 splx(s); 1753 1754 /* return number of chars received */ 1755 return(len - mp->mp_cnt); 1756 } 1757 1758 int 1759 mbpp_hztoms(int h) 1760 { 1761 int m = h; 1762 1763 if( m > 0 ) 1764 m = m * 1000 / hz; 1765 return(m); 1766 } 1767 1768 int 1769 mbpp_mstohz(int m) 1770 { 1771 int h = m; 1772 1773 if( h > 0 ) { 1774 h = h * hz / 1000; 1775 if( h == 0 ) 1776 h = 1000 / hz; 1777 } 1778 return(h); 1779 } 1780 1781 #endif /* NMAGMA */ 1782
Indexes created Tue Sep 23 07:09:52 GMT 2025