magma.c revision 1.10
1 /* $NetBSD: magma.c,v 1.10 2001/05/02 10:32:11 scw 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 #if 0 35 #define MAGMA_DEBUG 36 #endif 37 38 /* 39 * Driver for Magma SBus Serial/Parallel cards using the Cirrus Logic 40 * CD1400 & CD1190 chips 41 */ 42 43 #include "magma.h" 44 #if NMAGMA > 0 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/proc.h> 49 #include <sys/device.h> 50 #include <sys/file.h> 51 #include <sys/ioctl.h> 52 #include <sys/malloc.h> 53 #include <sys/tty.h> 54 #include <sys/time.h> 55 #include <sys/kernel.h> 56 #include <sys/syslog.h> 57 #include <sys/conf.h> 58 #include <sys/errno.h> 59 60 #include <machine/bus.h> 61 #include <machine/intr.h> 62 #include <machine/autoconf.h> 63 #include <machine/conf.h> 64 65 #include <dev/sbus/sbusvar.h> 66 67 #include <dev/ic/cd1400reg.h> 68 #include <dev/ic/cd1190reg.h> 69 70 #include <dev/sbus/mbppio.h> 71 #include <dev/sbus/magmareg.h> 72 73 /* 74 * Select tty soft interrupt bit based on TTY ipl. (stole from zs.c) 75 */ 76 #if PIL_TTY == 1 77 # define IE_MSOFT IE_L1 78 #elif PIL_TTY == 4 79 # define IE_MSOFT IE_L4 80 #elif PIL_TTY == 6 81 # define IE_MSOFT IE_L6 82 #else 83 # error "no suitable software interrupt bit" 84 #endif 85 86 /* supported cards 87 * 88 * The table below lists the cards that this driver is likely to 89 * be able to support. 90 * 91 * Cards with parallel ports: except for the LC2+1Sp, they all use 92 * the CD1190 chip which I know nothing about. I've tried to leave 93 * hooks for it so it shouldn't be too hard to add support later. 94 * (I think somebody is working on this separately) 95 * 96 * Thanks to Bruce at Magma for telling me the hardware offsets. 97 */ 98 static struct magma_board_info supported_cards[] = { 99 { 100 "MAGMA,4_Sp", "Magma 4 Sp", 4, 0, 101 1, 0xa000, 0xc000, 0xe000, { 0x8000, 0, 0, 0 }, 102 0, { 0, 0 } 103 }, 104 { 105 "MAGMA,8_Sp", "Magma 8 Sp", 8, 0, 106 2, 0xa000, 0xc000, 0xe000, { 0x4000, 0x6000, 0, 0 }, 107 0, { 0, 0 } 108 }, 109 { 110 "MAGMA,_8HS_Sp", "Magma Fast 8 Sp", 8, 0, 111 2, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0, 0 }, 112 0, { 0, 0 } 113 }, 114 { 115 "MAGMA,_8SP_422", "Magma 8 Sp - 422", 8, 0, 116 2, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0, 0 }, 117 0, { 0, 0 } 118 }, 119 { 120 "MAGMA,12_Sp", "Magma 12 Sp", 12, 0, 121 3, 0xa000, 0xc000, 0xe000, { 0x2000, 0x4000, 0x6000, 0 }, 122 0, { 0, 0 } 123 }, 124 { 125 "MAGMA,16_Sp", "Magma 16 Sp", 16, 0, 126 4, 0xd000, 0xe000, 0xf000, { 0x8000, 0x9000, 0xa000, 0xb000 }, 127 0, { 0, 0 } 128 }, 129 { 130 "MAGMA,16_Sp_2", "Magma 16 Sp", 16, 0, 131 4, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0xc000, 0xe000 }, 132 0, { 0, 0 } 133 }, 134 { 135 "MAGMA,16HS_Sp", "Magma Fast 16 Sp", 16, 0, 136 4, 0x2000, 0x4000, 0x6000, { 0x8000, 0xa000, 0xc000, 0xe000 }, 137 0, { 0, 0 } 138 }, 139 { 140 "MAGMA,21_Sp", "Magma LC 2+1 Sp", 2, 1, 141 1, 0xa000, 0xc000, 0xe000, { 0x8000, 0, 0, 0 }, 142 0, { 0, 0 } 143 }, 144 { 145 "MAGMA,21HS_Sp", "Magma 2+1 Sp", 2, 1, 146 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 }, 147 1, { 0x6000, 0 } 148 }, 149 { 150 "MAGMA,41_Sp", "Magma 4+1 Sp", 4, 1, 151 1, 0xa000, 0xc000, 0xe000, { 0x4000, 0, 0, 0 }, 152 1, { 0x6000, 0 } 153 }, 154 { 155 "MAGMA,82_Sp", "Magma 8+2 Sp", 8, 2, 156 2, 0xd000, 0xe000, 0xf000, { 0x8000, 0x9000, 0, 0 }, 157 2, { 0xa000, 0xb000 } 158 }, 159 { 160 "MAGMA,P1_Sp", "Magma P1 Sp", 0, 1, 161 0, 0, 0, 0, { 0, 0, 0, 0 }, 162 1, { 0x8000, 0 } 163 }, 164 { 165 "MAGMA,P2_Sp", "Magma P2 Sp", 0, 2, 166 0, 0, 0, 0, { 0, 0, 0, 0 }, 167 2, { 0x4000, 0x8000 } 168 }, 169 { 170 NULL, NULL, 0, 0, 171 0, 0, 0, 0, { 0, 0, 0, 0 }, 172 0, { 0, 0 } 173 } 174 }; 175 176 /************************************************************************ 177 * 178 * Autoconfig Stuff 179 */ 180 181 struct cfattach magma_ca = { 182 sizeof(struct magma_softc), magma_match, magma_attach 183 }; 184 185 struct cfattach mtty_ca = { 186 sizeof(struct mtty_softc), mtty_match, mtty_attach 187 }; 188 189 struct cfattach mbpp_ca = { 190 sizeof(struct mbpp_softc), mbpp_match, mbpp_attach 191 }; 192 193 extern struct cfdriver mtty_cd; 194 extern struct cfdriver mbpp_cd; 195 196 /************************************************************************ 197 * 198 * CD1400 Routines 199 * 200 * cd1400_compute_baud calculate COR/BPR register values 201 * cd1400_write_ccr write a value to CD1400 ccr 202 * cd1400_read_reg read from a CD1400 register 203 * cd1400_write_reg write to a CD1400 register 204 * cd1400_enable_transmitter enable transmitting on CD1400 channel 205 */ 206 207 /* 208 * compute the bpr/cor pair for any baud rate 209 * returns 0 for success, 1 for failure 210 */ 211 int 212 cd1400_compute_baud(speed, clock, cor, bpr) 213 speed_t speed; 214 int clock; 215 int *cor, *bpr; 216 { 217 int c, co, br; 218 219 if( speed < 50 || speed > 150000 ) 220 return(1); 221 222 for( c = 0, co = 8 ; co <= 2048 ; co <<= 2, c++ ) { 223 br = ((clock * 1000000) + (co * speed) / 2) / (co * speed); 224 if( br < 0x100 ) { 225 *bpr = br; 226 *cor = c; 227 return(0); 228 } 229 } 230 231 return(1); 232 } 233 234 /* 235 * Write a CD1400 channel command, should have a timeout? 236 */ 237 __inline void 238 cd1400_write_ccr(cd, cmd) 239 struct cd1400 *cd; 240 u_char cmd; 241 { 242 while( cd1400_read_reg(cd, CD1400_CCR) ) 243 ; 244 245 cd1400_write_reg(cd, CD1400_CCR, cmd); 246 } 247 248 /* 249 * read a value from a cd1400 register 250 */ 251 __inline u_char 252 cd1400_read_reg(cd, reg) 253 struct cd1400 *cd; 254 int reg; 255 { 256 return(cd->cd_reg[reg]); 257 } 258 259 /* 260 * write a value to a cd1400 register 261 */ 262 __inline void 263 cd1400_write_reg(cd, reg, value) 264 struct cd1400 *cd; 265 int reg; 266 u_char value; 267 { 268 cd->cd_reg[reg] = value; 269 } 270 271 /* 272 * enable transmit service requests for cd1400 channel 273 */ 274 void 275 cd1400_enable_transmitter(cd, channel) 276 struct cd1400 *cd; 277 int channel; 278 { 279 int s, srer; 280 281 s = spltty(); 282 cd1400_write_reg(cd, CD1400_CAR, channel); 283 srer = cd1400_read_reg(cd, CD1400_SRER); 284 SET(srer, CD1400_SRER_TXRDY); 285 cd1400_write_reg(cd, CD1400_SRER, srer); 286 splx(s); 287 } 288 289 /************************************************************************ 290 * 291 * CD1190 Routines 292 */ 293 294 /* well, there are none yet */ 295 296 /************************************************************************ 297 * 298 * Magma Routines 299 * 300 * magma_match reports if we have a magma board available 301 * magma_attach attaches magma boards to the sbus 302 * magma_hard hardware level interrupt routine 303 * magma_soft software level interrupt routine 304 */ 305 306 int 307 magma_match(parent, cf, aux) 308 struct device *parent; 309 struct cfdata *cf; 310 void *aux; 311 { 312 struct sbus_attach_args *sa = aux; 313 314 /* is it a magma Sp card? */ 315 if( strcmp(sa->sa_name, "MAGMA_Sp") != 0 ) 316 return(0); 317 318 dprintf(("magma: matched `%s'\n", sa->sa_name)); 319 dprintf(("magma: magma_prom `%s'\n", 320 getpropstring(sa->sa_node, "magma_prom"))); 321 dprintf(("magma: intlevels `%s'\n", 322 getpropstring(sa->sa_node, "intlevels"))); 323 dprintf(("magma: chiprev `%s'\n", 324 getpropstring(sa->sa_node, "chiprev"))); 325 dprintf(("magma: clock `%s'\n", 326 getpropstring(sa->sa_node, "clock"))); 327 328 return (1); 329 } 330 331 void 332 magma_attach(parent, self, aux) 333 struct device *parent; 334 struct device *self; 335 void *aux; 336 { 337 struct sbus_attach_args *sa = aux; 338 struct magma_softc *sc = (struct magma_softc *)self; 339 struct magma_board_info *card = supported_cards; 340 bus_space_handle_t bh; 341 char *magma_prom; 342 int node, chip; 343 344 node = sa->sa_node; 345 magma_prom = getpropstring(node, "magma_prom"); 346 347 /* find the card type */ 348 while (card->mb_name && strcmp(magma_prom, card->mb_name) != 0) 349 card++; 350 351 dprintf((" addr %p", sc)); 352 printf(" softpri %d:", PIL_TTY); 353 354 if( card->mb_name == NULL ) { 355 printf(" %s (unsupported)\n", magma_prom); 356 return; 357 } 358 359 printf(" %s\n", card->mb_realname); 360 361 sc->ms_board = card; 362 sc->ms_ncd1400 = card->mb_ncd1400; 363 sc->ms_ncd1190 = card->mb_ncd1190; 364 365 if (sbus_bus_map(sa->sa_bustag, 366 sa->sa_slot, 367 sa->sa_offset, 368 sa->sa_size, 369 BUS_SPACE_MAP_LINEAR, 370 0, &bh) != 0) { 371 printf("%s @ sbus: cannot map registers\n", self->dv_xname); 372 return; 373 } 374 375 /* the SVCACK* lines are daisychained */ 376 sc->ms_svcackr = (caddr_t)bh + card->mb_svcackr; 377 sc->ms_svcackt = (caddr_t)bh + card->mb_svcackt; 378 sc->ms_svcackm = (caddr_t)bh + card->mb_svcackm; 379 380 /* init the cd1400 chips */ 381 for( chip = 0 ; chip < card->mb_ncd1400 ; chip++ ) { 382 struct cd1400 *cd = &sc->ms_cd1400[chip]; 383 384 cd->cd_reg = (caddr_t)bh + card->mb_cd1400[chip]; 385 386 /* XXX getpropstring(node, "clock") */ 387 cd->cd_clock = 25; 388 389 /* getpropstring(node, "chiprev"); */ 390 /* seemingly the Magma drivers just ignore the propstring */ 391 cd->cd_chiprev = cd1400_read_reg(cd, CD1400_GFRCR); 392 393 dprintf(("%s attach CD1400 %d addr %p rev %x clock %dMhz\n", 394 sc->ms_dev.dv_xname, chip, 395 cd->cd_reg, cd->cd_chiprev, cd->cd_clock)); 396 397 /* clear GFRCR */ 398 cd1400_write_reg(cd, CD1400_GFRCR, 0x00); 399 400 /* reset whole chip */ 401 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET | CD1400_CCR_FULLRESET); 402 403 /* wait for revision code to be restored */ 404 while( cd1400_read_reg(cd, CD1400_GFRCR) != cd->cd_chiprev ) 405 ; 406 407 /* set the Prescaler Period Register to tick at 1ms */ 408 cd1400_write_reg(cd, CD1400_PPR, 409 ((cd->cd_clock * 1000000 / CD1400_PPR_PRESCALER + 500) / 1000)); 410 411 /* The LC2+1Sp card is the only card that doesn't have 412 * a CD1190 for the parallel port, but uses channel 0 of 413 * the CD1400, so we make a note of it for later and set up 414 * the CD1400 for parallel mode operation. 415 */ 416 if( card->mb_npar && card->mb_ncd1190 == 0 ) { 417 cd1400_write_reg(cd, CD1400_GCR, CD1400_GCR_PARALLEL); 418 cd->cd_parmode = 1; 419 } 420 } 421 422 /* init the cd1190 chips */ 423 for( chip = 0 ; chip < card->mb_ncd1190 ; chip++ ) { 424 struct cd1190 *cd = &sc->ms_cd1190[chip]; 425 426 cd->cd_reg = (caddr_t)bh + card->mb_cd1190[chip]; 427 dprintf(("%s attach CD1190 %d addr %p (failed)\n", 428 self->dv_xname, chip, cd->cd_reg)); 429 /* XXX don't know anything about these chips yet */ 430 } 431 432 sbus_establish(&sc->ms_sd, &sc->ms_dev); 433 434 /* configure the children */ 435 (void)config_found(self, mtty_match, NULL); 436 (void)config_found(self, mbpp_match, NULL); 437 438 /* 439 * Establish the interrupt handlers. 440 */ 441 if (sa->sa_nintr == 0) 442 return; /* No interrupts to service!? */ 443 444 (void)bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_TTY, 445 0, magma_hard, sc); 446 (void)bus_intr_establish(sa->sa_bustag, PIL_TTY, IPL_SOFTSERIAL, 447 BUS_INTR_ESTABLISH_SOFTINTR, 448 magma_soft, sc); 449 evcnt_attach_dynamic(&sc->ms_intrcnt, EVCNT_TYPE_INTR, NULL, 450 sc->ms_dev.dv_xname, "intr"); 451 } 452 453 /* 454 * hard interrupt routine 455 * 456 * returns 1 if it handled it, otherwise 0 457 * 458 * runs at interrupt priority 459 */ 460 int 461 magma_hard(arg) 462 void *arg; 463 { 464 struct magma_softc *sc = arg; 465 struct cd1400 *cd; 466 int chip, status = 0; 467 int serviced = 0; 468 int needsoftint = 0; 469 470 /* 471 * check status of all the CD1400 chips 472 */ 473 for( chip = 0 ; chip < sc->ms_ncd1400 ; chip++ ) 474 status |= cd1400_read_reg(&sc->ms_cd1400[chip], CD1400_SVRR); 475 476 if( ISSET(status, CD1400_SVRR_RXRDY) ) { 477 u_char rivr = *sc->ms_svcackr; /* enter rx service context */ 478 int port = rivr >> 4; 479 480 if( rivr & (1<<3) ) { /* parallel port */ 481 struct mbpp_port *mbpp; 482 int n_chars; 483 484 mbpp = &sc->ms_mbpp->ms_port[port]; 485 cd = mbpp->mp_cd1400; 486 487 /* don't think we have to handle exceptions */ 488 n_chars = cd1400_read_reg(cd, CD1400_RDCR); 489 while (n_chars--) { 490 if( mbpp->mp_cnt == 0 ) { 491 SET(mbpp->mp_flags, MBPPF_WAKEUP); 492 needsoftint = 1; 493 break; 494 } 495 *mbpp->mp_ptr = cd1400_read_reg(cd,CD1400_RDSR); 496 mbpp->mp_ptr++; 497 mbpp->mp_cnt--; 498 } 499 } else { /* serial port */ 500 struct mtty_port *mtty; 501 u_char *ptr, n_chars, line_stat; 502 503 mtty = &sc->ms_mtty->ms_port[port]; 504 cd = mtty->mp_cd1400; 505 506 if( ISSET(rivr, CD1400_RIVR_EXCEPTION) ) { 507 line_stat = cd1400_read_reg(cd, CD1400_RDSR); 508 n_chars = 1; 509 } else { /* no exception, received data OK */ 510 line_stat = 0; 511 n_chars = cd1400_read_reg(cd, CD1400_RDCR); 512 } 513 514 ptr = mtty->mp_rput; 515 while( n_chars-- ) { 516 *ptr++ = line_stat; 517 *ptr++ = cd1400_read_reg(cd, CD1400_RDSR); 518 if( ptr == mtty->mp_rend ) ptr = mtty->mp_rbuf; 519 if( ptr == mtty->mp_rget ) { 520 if( ptr == mtty->mp_rbuf ) 521 ptr = mtty->mp_rend; 522 ptr -= 2; 523 SET(mtty->mp_flags, MTTYF_RING_OVERFLOW); 524 break; 525 } 526 } 527 mtty->mp_rput = ptr; 528 529 needsoftint = 1; 530 } 531 532 cd1400_write_reg(cd, CD1400_EOSRR, 0); /* end service context */ 533 serviced = 1; 534 } /* if(rx_service...) */ 535 536 if( ISSET(status, CD1400_SVRR_MDMCH) ) { 537 u_char mivr = *sc->ms_svcackm; /* enter mdm service context */ 538 int port = mivr >> 4; 539 struct mtty_port *mtty; 540 int carrier; 541 u_char msvr; 542 543 /* 544 * Handle CD (LC2+1Sp = DSR) changes. 545 */ 546 mtty = &sc->ms_mtty->ms_port[port]; 547 cd = mtty->mp_cd1400; 548 msvr = cd1400_read_reg(cd, CD1400_MSVR2); 549 carrier = ISSET(msvr, cd->cd_parmode ? CD1400_MSVR2_DSR : CD1400_MSVR2_CD); 550 551 if( mtty->mp_carrier != carrier ) { 552 SET(mtty->mp_flags, MTTYF_CARRIER_CHANGED); 553 mtty->mp_carrier = carrier; 554 needsoftint = 1; 555 } 556 557 cd1400_write_reg(cd, CD1400_EOSRR, 0); /* end service context */ 558 serviced = 1; 559 } /* if(mdm_service...) */ 560 561 if( ISSET(status, CD1400_SVRR_TXRDY) ) { 562 u_char tivr = *sc->ms_svcackt; /* enter tx service context */ 563 int port = tivr >> 4; 564 565 if( tivr & (1<<3) ) { /* parallel port */ 566 struct mbpp_port *mbpp; 567 568 mbpp = &sc->ms_mbpp->ms_port[port]; 569 cd = mbpp->mp_cd1400; 570 571 if( mbpp->mp_cnt ) { 572 int count = 0; 573 574 /* fill the fifo */ 575 while (mbpp->mp_cnt && 576 count++ < CD1400_PAR_FIFO_SIZE) { 577 cd1400_write_reg(cd, CD1400_TDR, 578 *mbpp->mp_ptr); 579 mbpp->mp_ptr++; 580 mbpp->mp_cnt--; 581 } 582 } else { 583 /* 584 * fifo is empty and we got no more data 585 * to send, so shut off interrupts and 586 * signal for a wakeup, which can't be 587 * done here in case we beat mbpp_send to 588 * the tsleep call (we are running at >spltty) 589 */ 590 cd1400_write_reg(cd, CD1400_SRER, 0); 591 SET(mbpp->mp_flags, MBPPF_WAKEUP); 592 needsoftint = 1; 593 } 594 } else { /* serial port */ 595 struct mtty_port *mtty; 596 struct tty *tp; 597 598 mtty = &sc->ms_mtty->ms_port[port]; 599 cd = mtty->mp_cd1400; 600 tp = mtty->mp_tty; 601 602 if( !ISSET(mtty->mp_flags, MTTYF_STOP) ) { 603 int count = 0; 604 605 /* check if we should start/stop a break */ 606 if( ISSET(mtty->mp_flags, MTTYF_SET_BREAK) ) { 607 cd1400_write_reg(cd, CD1400_TDR, 0); 608 cd1400_write_reg(cd, CD1400_TDR, 0x81); 609 /* should we delay too? */ 610 CLR(mtty->mp_flags, MTTYF_SET_BREAK); 611 count += 2; 612 } 613 614 if( ISSET(mtty->mp_flags, MTTYF_CLR_BREAK) ) { 615 cd1400_write_reg(cd, CD1400_TDR, 0); 616 cd1400_write_reg(cd, CD1400_TDR, 0x83); 617 CLR(mtty->mp_flags, MTTYF_CLR_BREAK); 618 count += 2; 619 } 620 621 /* I don't quite fill the fifo in case the last one is a 622 * NULL which I have to double up because its the escape 623 * code for embedded transmit characters. 624 */ 625 while( mtty->mp_txc > 0 && count < CD1400_TX_FIFO_SIZE - 1 ) { 626 u_char ch; 627 628 ch = *mtty->mp_txp; 629 630 mtty->mp_txc--; 631 mtty->mp_txp++; 632 633 if( ch == 0 ) { 634 cd1400_write_reg(cd, CD1400_TDR, ch); 635 count++; 636 } 637 638 cd1400_write_reg(cd, CD1400_TDR, ch); 639 count++; 640 } 641 } 642 643 /* if we ran out of work or are requested to STOP then 644 * shut off the txrdy interrupts and signal DONE to flush 645 * out the chars we have sent. 646 */ 647 if( mtty->mp_txc == 0 || ISSET(mtty->mp_flags, MTTYF_STOP) ) { 648 register int srer; 649 650 srer = cd1400_read_reg(cd, CD1400_SRER); 651 CLR(srer, CD1400_SRER_TXRDY); 652 cd1400_write_reg(cd, CD1400_SRER, srer); 653 CLR(mtty->mp_flags, MTTYF_STOP); 654 655 SET(mtty->mp_flags, MTTYF_DONE); 656 needsoftint = 1; 657 } 658 } 659 660 cd1400_write_reg(cd, CD1400_EOSRR, 0); /* end service context */ 661 serviced = 1; 662 } /* if(tx_service...) */ 663 664 /* XXX service CD1190 interrupts too 665 for( chip = 0 ; chip < sc->ms_ncd1190 ; chip++ ) { 666 } 667 */ 668 669 if( needsoftint ) { /* trigger the soft interrupt */ 670 #if defined(SUN4M) 671 if( CPU_ISSUN4M ) 672 raise(0, PIL_TTY); 673 else 674 #endif 675 ienab_bis(IE_MSOFT); 676 } 677 678 return(serviced); 679 } 680 681 /* 682 * magma soft interrupt handler 683 * 684 * returns 1 if it handled it, 0 otherwise 685 * 686 * runs at spltty() 687 */ 688 int 689 magma_soft(arg) 690 void *arg; 691 { 692 struct magma_softc *sc = arg; 693 struct mtty_softc *mtty = sc->ms_mtty; 694 struct mbpp_softc *mbpp = sc->ms_mbpp; 695 int port; 696 int serviced = 0; 697 int s, flags; 698 699 if (mtty == NULL) 700 goto chkbpp; 701 702 /* 703 * check the tty ports to see what needs doing 704 */ 705 for( port = 0 ; port < mtty->ms_nports ; port++ ) { 706 struct mtty_port *mp = &mtty->ms_port[port]; 707 struct tty *tp = mp->mp_tty; 708 709 if( !ISSET(tp->t_state, TS_ISOPEN) ) 710 continue; 711 712 /* 713 * handle any received data 714 */ 715 while( mp->mp_rget != mp->mp_rput ) { 716 u_char stat; 717 int data; 718 719 stat = mp->mp_rget[0]; 720 data = mp->mp_rget[1]; 721 mp->mp_rget = ((mp->mp_rget + 2) == mp->mp_rend) 722 ? mp->mp_rbuf : (mp->mp_rget + 2); 723 724 if( stat & (CD1400_RDSR_BREAK | CD1400_RDSR_FE) ) 725 data |= TTY_FE; 726 if( stat & CD1400_RDSR_PE ) 727 data |= TTY_PE; 728 729 if( stat & CD1400_RDSR_OE ) 730 log(LOG_WARNING, "%s%x: fifo overflow\n", 731 mtty->ms_dev.dv_xname, port); 732 733 (*tp->t_linesw->l_rint)(data, tp); 734 serviced = 1; 735 } 736 737 s = splhigh(); /* block out hard interrupt routine */ 738 flags = mp->mp_flags; 739 CLR(mp->mp_flags, MTTYF_DONE | MTTYF_CARRIER_CHANGED | MTTYF_RING_OVERFLOW); 740 splx(s); /* ok */ 741 742 if( ISSET(flags, MTTYF_CARRIER_CHANGED) ) { 743 dprintf(("%s%x: cd %s\n", mtty->ms_dev.dv_xname, 744 port, mp->mp_carrier ? "on" : "off")); 745 (*tp->t_linesw->l_modem)(tp, mp->mp_carrier); 746 serviced = 1; 747 } 748 749 if( ISSET(flags, MTTYF_RING_OVERFLOW) ) { 750 log(LOG_WARNING, "%s%x: ring buffer overflow\n", 751 mtty->ms_dev.dv_xname, port); 752 serviced = 1; 753 } 754 755 if( ISSET(flags, MTTYF_DONE) ) { 756 ndflush(&tp->t_outq, mp->mp_txp - tp->t_outq.c_cf); 757 CLR(tp->t_state, TS_BUSY); 758 (*tp->t_linesw->l_start)(tp); /* might be some more */ 759 serviced = 1; 760 } 761 } /* for(each mtty...) */ 762 763 764 chkbpp: 765 /* 766 * Check the bpp ports (if any) to see what needs doing 767 */ 768 if (mbpp == NULL) 769 return (serviced); 770 771 for( port = 0 ; port < mbpp->ms_nports ; port++ ) { 772 struct mbpp_port *mp = &mbpp->ms_port[port]; 773 774 if( !ISSET(mp->mp_flags, MBPPF_OPEN) ) 775 continue; 776 777 s = splhigh(); 778 flags = mp->mp_flags; 779 CLR(mp->mp_flags, MBPPF_WAKEUP); 780 splx(s); 781 782 if( ISSET(flags, MBPPF_WAKEUP) ) { 783 wakeup(mp); 784 serviced = 1; 785 } 786 787 } /* for(each mbpp...) */ 788 789 return(serviced); 790 } 791 792 /************************************************************************ 793 * 794 * MTTY Routines 795 * 796 * mtty_match match one mtty device 797 * mtty_attach attach mtty devices 798 * mttyopen open mtty device 799 * mttyclose close mtty device 800 * mttyread read from mtty 801 * mttywrite write to mtty 802 * mttyioctl do ioctl on mtty 803 * mttytty return tty pointer for mtty 804 * mttystop stop mtty device 805 * mtty_start start mtty device 806 * mtty_param set mtty parameters 807 * mtty_modem_control set modem control lines 808 */ 809 810 int 811 mtty_match(parent, cf, args) 812 struct device *parent; 813 struct cfdata *cf; 814 void *args; 815 { 816 struct magma_softc *sc = (struct magma_softc *)parent; 817 818 return( args == mtty_match && sc->ms_board->mb_nser && sc->ms_mtty == NULL ); 819 } 820 821 void 822 mtty_attach(parent, dev, args) 823 struct device *parent; 824 struct device *dev; 825 void *args; 826 { 827 struct magma_softc *sc = (struct magma_softc *)parent; 828 struct mtty_softc *ms = (struct mtty_softc *)dev; 829 int port, chip, chan; 830 831 sc->ms_mtty = ms; 832 dprintf((" addr %p", ms)); 833 834 for( port = 0, chip = 0, chan = 0 ; port < sc->ms_board->mb_nser ; port++ ) { 835 struct mtty_port *mp = &ms->ms_port[port]; 836 struct tty *tp; 837 838 mp->mp_cd1400 = &sc->ms_cd1400[chip]; 839 if( mp->mp_cd1400->cd_parmode && chan == 0 ) 840 chan = 1; /* skip channel 0 if parmode */ 841 mp->mp_channel = chan; 842 843 tp = ttymalloc(); 844 if( tp == NULL ) break; 845 tty_attach(tp); 846 tp->t_oproc = mtty_start; 847 tp->t_param = mtty_param; 848 849 mp->mp_tty = tp; 850 851 mp->mp_rbuf = malloc(MTTY_RBUF_SIZE, M_DEVBUF, M_NOWAIT); 852 if( mp->mp_rbuf == NULL ) break; 853 854 mp->mp_rend = mp->mp_rbuf + MTTY_RBUF_SIZE; 855 856 chan = (chan + 1) % CD1400_NO_OF_CHANNELS; 857 if( chan == 0 ) chip++; 858 } 859 860 ms->ms_nports = port; 861 printf(": %d tty%s\n", port, port == 1 ? "" : "s"); 862 } 863 864 /* 865 * open routine. returns zero if successful, else error code 866 */ 867 int 868 mttyopen(dev, flags, mode, p) 869 dev_t dev; 870 int flags; 871 int mode; 872 struct proc *p; 873 { 874 int card = MAGMA_CARD(dev); 875 int port = MAGMA_PORT(dev); 876 struct mtty_softc *ms; 877 struct mtty_port *mp; 878 struct tty *tp; 879 struct cd1400 *cd; 880 int error, s; 881 882 if( card >= mtty_cd.cd_ndevs || 883 (ms = mtty_cd.cd_devs[card]) == NULL || port >= ms->ms_nports ) 884 return(ENXIO); /* device not configured */ 885 886 mp = &ms->ms_port[port]; 887 tp = mp->mp_tty; 888 tp->t_dev = dev; 889 890 if (ISSET(tp->t_state, TS_ISOPEN) && 891 ISSET(tp->t_state, TS_XCLUDE) && 892 p->p_ucred->cr_uid != 0) 893 return (EBUSY); 894 895 s = spltty(); 896 897 if( !ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 898 899 /* set defaults */ 900 ttychars(tp); 901 tp->t_iflag = TTYDEF_IFLAG; 902 tp->t_oflag = TTYDEF_OFLAG; 903 tp->t_cflag = TTYDEF_CFLAG; 904 if( ISSET(mp->mp_openflags, TIOCFLAG_CLOCAL) ) 905 SET(tp->t_cflag, CLOCAL); 906 if( ISSET(mp->mp_openflags, TIOCFLAG_CRTSCTS) ) 907 SET(tp->t_cflag, CRTSCTS); 908 if( ISSET(mp->mp_openflags, TIOCFLAG_MDMBUF) ) 909 SET(tp->t_cflag, MDMBUF); 910 tp->t_lflag = TTYDEF_LFLAG; 911 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 912 913 /* init ring buffer */ 914 mp->mp_rput = mp->mp_rget = mp->mp_rbuf; 915 916 /* reset CD1400 channel */ 917 cd = mp->mp_cd1400; 918 cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); 919 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET); 920 921 /* encode the port number in top half of LIVR */ 922 cd1400_write_reg(cd, CD1400_LIVR, port << 4 ); 923 924 /* sets parameters and raises DTR */ 925 (void)mtty_param(tp, &tp->t_termios); 926 927 /* set tty watermarks */ 928 ttsetwater(tp); 929 930 /* enable service requests */ 931 cd1400_write_reg(cd, CD1400_SRER, 932 CD1400_SRER_RXDATA | CD1400_SRER_MDMCH); 933 934 /* tell the tty about the carrier status */ 935 if( ISSET(mp->mp_openflags, TIOCFLAG_SOFTCAR) || 936 mp->mp_carrier ) 937 SET(tp->t_state, TS_CARR_ON); 938 else 939 CLR(tp->t_state, TS_CARR_ON); 940 } 941 splx(s); 942 943 error = ttyopen(tp, MTTY_DIALOUT(dev), ISSET(flags, O_NONBLOCK)); 944 if (error != 0) 945 goto bad; 946 947 error = (*tp->t_linesw->l_open)(dev, tp); 948 if (error != 0) 949 goto bad; 950 951 bad: 952 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 953 /* 954 * We failed to open the device, and nobody else had it opened. 955 * Clean up the state as appropriate. 956 */ 957 /* XXX - do that here */ 958 } 959 960 return (error); 961 } 962 963 /* 964 * close routine. returns zero if successful, else error code 965 */ 966 int 967 mttyclose(dev, flag, mode, p) 968 dev_t dev; 969 int flag; 970 int mode; 971 struct proc *p; 972 { 973 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 974 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 975 struct tty *tp = mp->mp_tty; 976 int s; 977 978 (*tp->t_linesw->l_close)(tp, flag); 979 ttyclose(tp); 980 981 s = spltty(); 982 983 /* if HUPCL is set, and the tty is no longer open 984 * shut down the port 985 */ 986 if( ISSET(tp->t_cflag, HUPCL) || !ISSET(tp->t_state, TS_ISOPEN) ) { 987 /* XXX wait until FIFO is empty before turning off the channel 988 struct cd1400 *cd = mp->mp_cd1400; 989 */ 990 991 /* drop DTR and RTS */ 992 (void)mtty_modem_control(mp, 0, DMSET); 993 994 /* turn off the channel 995 cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); 996 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET); 997 */ 998 } 999 1000 splx(s); 1001 1002 return(0); 1003 } 1004 1005 /* 1006 * Read routine 1007 */ 1008 int 1009 mttyread(dev, uio, flags) 1010 dev_t dev; 1011 struct uio *uio; 1012 int flags; 1013 { 1014 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1015 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1016 struct tty *tp = mp->mp_tty; 1017 1018 return( (*tp->t_linesw->l_read)(tp, uio, flags) ); 1019 } 1020 1021 /* 1022 * Write routine 1023 */ 1024 int 1025 mttywrite(dev, uio, flags) 1026 dev_t dev; 1027 struct uio *uio; 1028 int flags; 1029 { 1030 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1031 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1032 struct tty *tp = mp->mp_tty; 1033 1034 return( (*tp->t_linesw->l_write)(tp, uio, flags) ); 1035 } 1036 1037 /* 1038 * Poll routine 1039 */ 1040 int 1041 mttypoll(dev, events, p) 1042 dev_t dev; 1043 int events; 1044 struct proc *p; 1045 { 1046 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1047 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1048 struct tty *tp = mp->mp_tty; 1049 1050 return ((*tp->t_linesw->l_poll)(tp, events, p)); 1051 } 1052 1053 /* 1054 * return tty pointer 1055 */ 1056 struct tty * 1057 mttytty(dev) 1058 dev_t dev; 1059 { 1060 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1061 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1062 1063 return(mp->mp_tty); 1064 } 1065 1066 /* 1067 * ioctl routine 1068 */ 1069 int 1070 mttyioctl(dev, cmd, data, flags, p) 1071 dev_t dev; 1072 u_long cmd; 1073 caddr_t data; 1074 int flags; 1075 struct proc *p; 1076 { 1077 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(dev)]; 1078 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1079 struct tty *tp = mp->mp_tty; 1080 int error; 1081 1082 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, p); 1083 if( error >= 0 ) return(error); 1084 1085 error = ttioctl(tp, cmd, data, flags, p); 1086 if( error >= 0 ) return(error); 1087 1088 error = 0; 1089 1090 switch(cmd) { 1091 case TIOCSBRK: /* set break */ 1092 SET(mp->mp_flags, MTTYF_SET_BREAK); 1093 cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel); 1094 break; 1095 1096 case TIOCCBRK: /* clear break */ 1097 SET(mp->mp_flags, MTTYF_CLR_BREAK); 1098 cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel); 1099 break; 1100 1101 case TIOCSDTR: /* set DTR */ 1102 mtty_modem_control(mp, TIOCM_DTR, DMBIS); 1103 break; 1104 1105 case TIOCCDTR: /* clear DTR */ 1106 mtty_modem_control(mp, TIOCM_DTR, DMBIC); 1107 break; 1108 1109 case TIOCMSET: /* set modem lines */ 1110 mtty_modem_control(mp, *((int *)data), DMSET); 1111 break; 1112 1113 case TIOCMBIS: /* bit set modem lines */ 1114 mtty_modem_control(mp, *((int *)data), DMBIS); 1115 break; 1116 1117 case TIOCMBIC: /* bit clear modem lines */ 1118 mtty_modem_control(mp, *((int *)data), DMBIC); 1119 break; 1120 1121 case TIOCMGET: /* get modem lines */ 1122 *((int *)data) = mtty_modem_control(mp, 0, DMGET); 1123 break; 1124 1125 case TIOCGFLAGS: 1126 *((int *)data) = mp->mp_openflags; 1127 break; 1128 1129 case TIOCSFLAGS: 1130 if( suser(p->p_ucred, &p->p_acflag) ) 1131 error = EPERM; 1132 else 1133 mp->mp_openflags = *((int *)data) & 1134 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 1135 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 1136 break; 1137 1138 default: 1139 error = ENOTTY; 1140 } 1141 1142 return(error); 1143 } 1144 1145 /* 1146 * Stop output, e.g., for ^S or output flush. 1147 */ 1148 void 1149 mttystop(tp, flags) 1150 struct tty *tp; 1151 int flags; 1152 { 1153 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(tp->t_dev)]; 1154 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)]; 1155 int s; 1156 1157 s = spltty(); 1158 1159 if( ISSET(tp->t_state, TS_BUSY) ) { 1160 if( !ISSET(tp->t_state, TS_TTSTOP) ) 1161 SET(tp->t_state, TS_FLUSH); 1162 1163 /* 1164 * the transmit interrupt routine will disable transmit when it 1165 * notices that MTTYF_STOP has been set. 1166 */ 1167 SET(mp->mp_flags, MTTYF_STOP); 1168 } 1169 1170 splx(s); 1171 } 1172 1173 /* 1174 * Start output, after a stop. 1175 */ 1176 void 1177 mtty_start(tp) 1178 struct tty *tp; 1179 { 1180 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(tp->t_dev)]; 1181 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)]; 1182 int s; 1183 1184 s = spltty(); 1185 1186 /* we only need to do something if we are not already busy 1187 * or delaying or stopped 1188 */ 1189 if( !ISSET(tp->t_state, TS_TTSTOP | TS_TIMEOUT | TS_BUSY) ) { 1190 1191 /* if we are sleeping and output has drained below 1192 * low water mark, awaken 1193 */ 1194 if( tp->t_outq.c_cc <= tp->t_lowat ) { 1195 if( ISSET(tp->t_state, TS_ASLEEP) ) { 1196 CLR(tp->t_state, TS_ASLEEP); 1197 wakeup(&tp->t_outq); 1198 } 1199 1200 selwakeup(&tp->t_wsel); 1201 } 1202 1203 /* if something to send, start transmitting 1204 */ 1205 if( tp->t_outq.c_cc ) { 1206 mp->mp_txc = ndqb(&tp->t_outq, 0); 1207 mp->mp_txp = tp->t_outq.c_cf; 1208 SET(tp->t_state, TS_BUSY); 1209 cd1400_enable_transmitter(mp->mp_cd1400, mp->mp_channel); 1210 } 1211 } 1212 1213 splx(s); 1214 } 1215 1216 /* 1217 * set/get modem line status 1218 * 1219 * bits can be: TIOCM_DTR, TIOCM_RTS, TIOCM_CTS, TIOCM_CD, TIOCM_RI, TIOCM_DSR 1220 * 1221 * note that DTR and RTS lines are exchanged, and that DSR is 1222 * not available on the LC2+1Sp card (used as CD) 1223 * 1224 * only let them fiddle with RTS if CRTSCTS is not enabled 1225 */ 1226 int 1227 mtty_modem_control(mp, bits, howto) 1228 struct mtty_port *mp; 1229 int bits; 1230 int howto; 1231 { 1232 struct cd1400 *cd = mp->mp_cd1400; 1233 struct tty *tp = mp->mp_tty; 1234 int s, msvr; 1235 1236 s = spltty(); 1237 1238 cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); 1239 1240 switch(howto) { 1241 case DMGET: /* get bits */ 1242 bits = 0; 1243 1244 bits |= TIOCM_LE; 1245 1246 msvr = cd1400_read_reg(cd, CD1400_MSVR1); 1247 if( msvr & CD1400_MSVR1_RTS ) bits |= TIOCM_DTR; 1248 1249 msvr = cd1400_read_reg(cd, CD1400_MSVR2); 1250 if( msvr & CD1400_MSVR2_DTR ) bits |= TIOCM_RTS; 1251 if( msvr & CD1400_MSVR2_CTS ) bits |= TIOCM_CTS; 1252 if( msvr & CD1400_MSVR2_RI ) bits |= TIOCM_RI; 1253 if( msvr & CD1400_MSVR2_DSR ) bits |= (cd->cd_parmode ? TIOCM_CD : TIOCM_DSR); 1254 if( msvr & CD1400_MSVR2_CD ) bits |= (cd->cd_parmode ? 0 : TIOCM_CD); 1255 1256 break; 1257 1258 case DMSET: /* reset bits */ 1259 if( !ISSET(tp->t_cflag, CRTSCTS) ) 1260 cd1400_write_reg(cd, CD1400_MSVR2, ((bits & TIOCM_RTS) ? CD1400_MSVR2_DTR : 0)); 1261 1262 cd1400_write_reg(cd, CD1400_MSVR1, ((bits & TIOCM_DTR) ? CD1400_MSVR1_RTS : 0)); 1263 1264 break; 1265 1266 case DMBIS: /* set bits */ 1267 if( (bits & TIOCM_RTS) && !ISSET(tp->t_cflag, CRTSCTS) ) 1268 cd1400_write_reg(cd, CD1400_MSVR2, CD1400_MSVR2_DTR); 1269 1270 if( bits & TIOCM_DTR ) 1271 cd1400_write_reg(cd, CD1400_MSVR1, CD1400_MSVR1_RTS); 1272 1273 break; 1274 1275 case DMBIC: /* clear bits */ 1276 if( (bits & TIOCM_RTS) && !ISSET(tp->t_cflag, CRTSCTS) ) 1277 cd1400_write_reg(cd, CD1400_MSVR2, 0); 1278 1279 if( bits & TIOCM_DTR ) 1280 cd1400_write_reg(cd, CD1400_MSVR1, 0); 1281 1282 break; 1283 } 1284 1285 splx(s); 1286 return(bits); 1287 } 1288 1289 /* 1290 * Set tty parameters, returns error or 0 on success 1291 */ 1292 int 1293 mtty_param(tp, t) 1294 struct tty *tp; 1295 struct termios *t; 1296 { 1297 struct mtty_softc *ms = mtty_cd.cd_devs[MAGMA_CARD(tp->t_dev)]; 1298 struct mtty_port *mp = &ms->ms_port[MAGMA_PORT(tp->t_dev)]; 1299 struct cd1400 *cd = mp->mp_cd1400; 1300 int rbpr, tbpr, rcor, tcor; 1301 u_char mcor1 = 0, mcor2 = 0; 1302 int s, opt; 1303 1304 if( t->c_ospeed && cd1400_compute_baud(t->c_ospeed, cd->cd_clock, &tcor, &tbpr) ) 1305 return(EINVAL); 1306 1307 if( t->c_ispeed && cd1400_compute_baud(t->c_ispeed, cd->cd_clock, &rcor, &rbpr) ) 1308 return(EINVAL); 1309 1310 s = spltty(); 1311 1312 /* hang up the line if ospeed is zero, else raise DTR */ 1313 (void)mtty_modem_control(mp, TIOCM_DTR, (t->c_ospeed == 0 ? DMBIC : DMBIS)); 1314 1315 /* select channel, done in mtty_modem_control() */ 1316 /* cd1400_write_reg(cd, CD1400_CAR, mp->mp_channel); */ 1317 1318 /* set transmit speed */ 1319 if( t->c_ospeed ) { 1320 cd1400_write_reg(cd, CD1400_TCOR, tcor); 1321 cd1400_write_reg(cd, CD1400_TBPR, tbpr); 1322 } 1323 1324 /* set receive speed */ 1325 if( t->c_ispeed ) { 1326 cd1400_write_reg(cd, CD1400_RCOR, rcor); 1327 cd1400_write_reg(cd, CD1400_RBPR, rbpr); 1328 } 1329 1330 /* enable transmitting and receiving on this channel */ 1331 opt = CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTEN | CD1400_CCR_RCVEN; 1332 cd1400_write_ccr(cd, opt); 1333 1334 /* set parity, data and stop bits */ 1335 opt = 0; 1336 if( ISSET(t->c_cflag, PARENB) ) 1337 opt |= (ISSET(t->c_cflag, PARODD) ? CD1400_COR1_PARODD : CD1400_COR1_PARNORMAL); 1338 1339 if( !ISSET(t->c_iflag, INPCK) ) 1340 opt |= CD1400_COR1_NOINPCK; /* no parity checking */ 1341 1342 if( ISSET(t->c_cflag, CSTOPB) ) 1343 opt |= CD1400_COR1_STOP2; 1344 1345 switch( t->c_cflag & CSIZE ) { 1346 case CS5: 1347 opt |= CD1400_COR1_CS5; 1348 break; 1349 1350 case CS6: 1351 opt |= CD1400_COR1_CS6; 1352 break; 1353 1354 case CS7: 1355 opt |= CD1400_COR1_CS7; 1356 break; 1357 1358 default: 1359 opt |= CD1400_COR1_CS8; 1360 break; 1361 } 1362 1363 cd1400_write_reg(cd, CD1400_COR1, opt); 1364 1365 /* 1366 * enable Embedded Transmit Commands (for breaks) 1367 * use the CD1400 automatic CTS flow control if CRTSCTS is set 1368 */ 1369 opt = CD1400_COR2_ETC; 1370 if( ISSET(t->c_cflag, CRTSCTS) ) opt |= CD1400_COR2_CCTS_OFLOW; 1371 cd1400_write_reg(cd, CD1400_COR2, opt); 1372 1373 cd1400_write_reg(cd, CD1400_COR3, MTTY_RX_FIFO_THRESHOLD); 1374 1375 cd1400_write_ccr(cd, CD1400_CCR_CMDCORCHG | CD1400_CCR_COR1 | CD1400_CCR_COR2 | CD1400_CCR_COR3); 1376 1377 cd1400_write_reg(cd, CD1400_COR4, CD1400_COR4_PFO_EXCEPTION); 1378 cd1400_write_reg(cd, CD1400_COR5, 0); 1379 1380 /* 1381 * if automatic RTS handshaking enabled, set DTR threshold 1382 * (RTS and DTR lines are switched, CD1400 thinks its DTR) 1383 */ 1384 if( ISSET(t->c_cflag, CRTSCTS) ) 1385 mcor1 = MTTY_RX_DTR_THRESHOLD; 1386 1387 /* set up `carrier detect' interrupts */ 1388 if( cd->cd_parmode ) { 1389 SET(mcor1, CD1400_MCOR1_DSRzd); 1390 SET(mcor2, CD1400_MCOR2_DSRod); 1391 } else { 1392 SET(mcor1, CD1400_MCOR1_CDzd); 1393 SET(mcor2, CD1400_MCOR2_CDod); 1394 } 1395 1396 cd1400_write_reg(cd, CD1400_MCOR1, mcor1); 1397 cd1400_write_reg(cd, CD1400_MCOR2, mcor2); 1398 1399 /* receive timeout 2ms */ 1400 cd1400_write_reg(cd, CD1400_RTPR, 2); 1401 1402 splx(s); 1403 return(0); 1404 } 1405 1406 /************************************************************************ 1407 * 1408 * MBPP Routines 1409 * 1410 * mbpp_match match one mbpp device 1411 * mbpp_attach attach mbpp devices 1412 * mbppopen open mbpp device 1413 * mbppclose close mbpp device 1414 * mbppread read from mbpp 1415 * mbppwrite write to mbpp 1416 * mbppioctl do ioctl on mbpp 1417 * mbppselect do select on mbpp 1418 * mbpp_rw general rw routine 1419 * mbpp_timeout rw timeout 1420 * mbpp_start rw start after delay 1421 * mbpp_send send data 1422 * mbpp_recv recv data 1423 */ 1424 1425 int 1426 mbpp_match(parent, cf, args) 1427 struct device *parent; 1428 struct cfdata *cf; 1429 void *args; 1430 { 1431 struct magma_softc *sc = (struct magma_softc *)parent; 1432 1433 return( args == mbpp_match && sc->ms_board->mb_npar && sc->ms_mbpp == NULL ); 1434 } 1435 1436 void 1437 mbpp_attach(parent, dev, args) 1438 struct device *parent; 1439 struct device *dev; 1440 void *args; 1441 { 1442 struct magma_softc *sc = (struct magma_softc *)parent; 1443 struct mbpp_softc *ms = (struct mbpp_softc *)dev; 1444 struct mbpp_port *mp; 1445 int port; 1446 1447 sc->ms_mbpp = ms; 1448 dprintf((" addr %p", ms)); 1449 1450 for( port = 0 ; port < sc->ms_board->mb_npar ; port++ ) { 1451 mp = &ms->ms_port[port]; 1452 1453 callout_init(&mp->mp_timeout_ch); 1454 callout_init(&mp->mp_start_ch); 1455 1456 if( sc->ms_ncd1190 ) 1457 mp->mp_cd1190 = &sc->ms_cd1190[port]; 1458 else 1459 mp->mp_cd1400 = &sc->ms_cd1400[0]; 1460 } 1461 1462 ms->ms_nports = port; 1463 printf(": %d port%s\n", port, port == 1 ? "" : "s"); 1464 } 1465 1466 /* 1467 * open routine. returns zero if successful, else error code 1468 */ 1469 int 1470 mbppopen(dev, flags, mode, p) 1471 dev_t dev; 1472 int flags; 1473 int mode; 1474 struct proc *p; 1475 { 1476 int card = MAGMA_CARD(dev); 1477 int port = MAGMA_PORT(dev); 1478 struct mbpp_softc *ms; 1479 struct mbpp_port *mp; 1480 int s; 1481 1482 if( card >= mbpp_cd.cd_ndevs || 1483 (ms = mbpp_cd.cd_devs[card]) == NULL || port >= ms->ms_nports ) 1484 return(ENXIO); 1485 1486 mp = &ms->ms_port[port]; 1487 1488 s = spltty(); 1489 if( ISSET(mp->mp_flags, MBPPF_OPEN) ) { 1490 splx(s); 1491 return(EBUSY); 1492 } 1493 SET(mp->mp_flags, MBPPF_OPEN); 1494 splx(s); 1495 1496 /* set defaults */ 1497 mp->mp_burst = MBPP_BURST; 1498 mp->mp_timeout = mbpp_mstohz(MBPP_TIMEOUT); 1499 mp->mp_delay = mbpp_mstohz(MBPP_DELAY); 1500 1501 /* init chips */ 1502 if( mp->mp_cd1400 ) { /* CD1400 */ 1503 struct cd1400 *cd = mp->mp_cd1400; 1504 1505 /* set up CD1400 channel */ 1506 s = spltty(); 1507 cd1400_write_reg(cd, CD1400_CAR, 0); 1508 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET); 1509 cd1400_write_reg(cd, CD1400_LIVR, (1<<3)); 1510 splx(s); 1511 } else { /* CD1190 */ 1512 mp->mp_flags = 0; 1513 return (ENXIO); 1514 } 1515 1516 return (0); 1517 } 1518 1519 /* 1520 * close routine. returns zero if successful, else error code 1521 */ 1522 int 1523 mbppclose(dev, flag, mode, p) 1524 dev_t dev; 1525 int flag; 1526 int mode; 1527 struct proc *p; 1528 { 1529 struct mbpp_softc *ms = mbpp_cd.cd_devs[MAGMA_CARD(dev)]; 1530 struct mbpp_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1531 1532 mp->mp_flags = 0; 1533 return(0); 1534 } 1535 1536 /* 1537 * Read routine 1538 */ 1539 int 1540 mbppread(dev, uio, flags) 1541 dev_t dev; 1542 struct uio *uio; 1543 int flags; 1544 { 1545 1546 return( mbpp_rw(dev, uio) ); 1547 } 1548 1549 /* 1550 * Write routine 1551 */ 1552 int 1553 mbppwrite(dev, uio, flags) 1554 dev_t dev; 1555 struct uio *uio; 1556 int flags; 1557 { 1558 1559 return( mbpp_rw(dev, uio) ); 1560 } 1561 1562 /* 1563 * ioctl routine 1564 */ 1565 int 1566 mbppioctl(dev, cmd, data, flags, p) 1567 dev_t dev; 1568 u_long cmd; 1569 caddr_t data; 1570 int flags; 1571 struct proc *p; 1572 { 1573 struct mbpp_softc *ms = mbpp_cd.cd_devs[MAGMA_CARD(dev)]; 1574 struct mbpp_port *mp = &ms->ms_port[MAGMA_PORT(dev)]; 1575 struct mbpp_param *bp; 1576 int error = 0; 1577 int s; 1578 1579 switch(cmd) { 1580 case MBPPIOCSPARAM: 1581 bp = (struct mbpp_param *)data; 1582 if( bp->bp_burst < MBPP_BURST_MIN || bp->bp_burst > MBPP_BURST_MAX || 1583 bp->bp_delay < MBPP_DELAY_MIN || bp->bp_delay > MBPP_DELAY_MIN ) { 1584 error = EINVAL; 1585 } else { 1586 mp->mp_burst = bp->bp_burst; 1587 mp->mp_timeout = mbpp_mstohz(bp->bp_timeout); 1588 mp->mp_delay = mbpp_mstohz(bp->bp_delay); 1589 } 1590 break; 1591 case MBPPIOCGPARAM: 1592 bp = (struct mbpp_param *)data; 1593 bp->bp_burst = mp->mp_burst; 1594 bp->bp_timeout = mbpp_hztoms(mp->mp_timeout); 1595 bp->bp_delay = mbpp_hztoms(mp->mp_delay); 1596 break; 1597 case MBPPIOCGSTAT: 1598 /* XXX make this more generic */ 1599 s = spltty(); 1600 cd1400_write_reg(mp->mp_cd1400, CD1400_CAR, 0); 1601 *(int *)data = cd1400_read_reg(mp->mp_cd1400, CD1400_PSVR); 1602 splx(s); 1603 break; 1604 default: 1605 error = ENOTTY; 1606 } 1607 1608 return(error); 1609 } 1610 1611 /* 1612 * poll routine 1613 */ 1614 int 1615 mbpppoll(dev, rw, p) 1616 dev_t dev; 1617 int rw; 1618 struct proc *p; 1619 { 1620 1621 return(ENODEV); 1622 } 1623 1624 int 1625 mbpp_rw(dev, uio) 1626 dev_t dev; 1627 struct uio *uio; 1628 { 1629 int card = MAGMA_CARD(dev); 1630 int port = MAGMA_PORT(dev); 1631 struct mbpp_softc *ms = mbpp_cd.cd_devs[card]; 1632 struct mbpp_port *mp = &ms->ms_port[port]; 1633 caddr_t buffer, ptr; 1634 int buflen, cnt, len; 1635 int s, error = 0; 1636 int gotdata = 0; 1637 1638 if( uio->uio_resid == 0 ) 1639 return(0); 1640 1641 buflen = min(uio->uio_resid, mp->mp_burst); 1642 buffer = malloc(buflen, M_DEVBUF, M_WAITOK); 1643 if( buffer == NULL ) 1644 return(ENOMEM); 1645 1646 SET(mp->mp_flags, MBPPF_UIO); 1647 1648 /* 1649 * start timeout, if needed 1650 */ 1651 if( mp->mp_timeout > 0 ) { 1652 SET(mp->mp_flags, MBPPF_TIMEOUT); 1653 callout_reset(&mp->mp_timeout_ch, mp->mp_timeout, 1654 mbpp_timeout, mp); 1655 } 1656 1657 len = cnt = 0; 1658 while( uio->uio_resid > 0 ) { 1659 len = min(buflen, uio->uio_resid); 1660 ptr = buffer; 1661 1662 if( uio->uio_rw == UIO_WRITE ) { 1663 error = uiomove(ptr, len, uio); 1664 if( error ) break; 1665 } 1666 again: /* goto bad */ 1667 /* timed out? */ 1668 if( !ISSET(mp->mp_flags, MBPPF_UIO) ) 1669 break; 1670 1671 /* 1672 * perform the operation 1673 */ 1674 if( uio->uio_rw == UIO_WRITE ) { 1675 cnt = mbpp_send(mp, ptr, len); 1676 } else { 1677 cnt = mbpp_recv(mp, ptr, len); 1678 } 1679 1680 if( uio->uio_rw == UIO_READ ) { 1681 if( cnt ) { 1682 error = uiomove(ptr, cnt, uio); 1683 if( error ) break; 1684 gotdata++; 1685 } 1686 else if( gotdata ) /* consider us done */ 1687 break; 1688 } 1689 1690 /* timed out? */ 1691 if( !ISSET(mp->mp_flags, MBPPF_UIO) ) 1692 break; 1693 1694 /* 1695 * poll delay? 1696 */ 1697 if( mp->mp_delay > 0 ) { 1698 s = splsoftclock(); 1699 SET(mp->mp_flags, MBPPF_DELAY); 1700 callout_reset(&mp->mp_start_ch, mp->mp_delay, 1701 mbpp_start, mp); 1702 error = tsleep(mp, PCATCH | PZERO, "mbppdelay", 0); 1703 splx(s); 1704 if( error ) break; 1705 } 1706 1707 /* 1708 * don't call uiomove again until we used all the data we grabbed 1709 */ 1710 if( uio->uio_rw == UIO_WRITE && cnt != len ) { 1711 ptr += cnt; 1712 len -= cnt; 1713 cnt = 0; 1714 goto again; 1715 } 1716 } 1717 1718 /* 1719 * clear timeouts 1720 */ 1721 s = splsoftclock(); 1722 if( ISSET(mp->mp_flags, MBPPF_TIMEOUT) ) { 1723 callout_stop(&mp->mp_timeout_ch); 1724 CLR(mp->mp_flags, MBPPF_TIMEOUT); 1725 } 1726 if( ISSET(mp->mp_flags, MBPPF_DELAY) ) { 1727 callout_stop(&mp->mp_start_ch); 1728 CLR(mp->mp_flags, MBPPF_DELAY); 1729 } 1730 splx(s); 1731 1732 /* 1733 * adjust for those chars that we uiomoved but never actually wrote 1734 */ 1735 if( uio->uio_rw == UIO_WRITE && cnt != len ) { 1736 uio->uio_resid += (len - cnt); 1737 } 1738 1739 free(buffer, M_DEVBUF); 1740 return(error); 1741 } 1742 1743 void 1744 mbpp_timeout(arg) 1745 void *arg; 1746 { 1747 struct mbpp_port *mp = arg; 1748 1749 CLR(mp->mp_flags, MBPPF_UIO | MBPPF_TIMEOUT); 1750 wakeup(mp); 1751 } 1752 1753 void 1754 mbpp_start(arg) 1755 void *arg; 1756 { 1757 struct mbpp_port *mp = arg; 1758 1759 CLR(mp->mp_flags, MBPPF_DELAY); 1760 wakeup(mp); 1761 } 1762 1763 int 1764 mbpp_send(mp, ptr, len) 1765 struct mbpp_port *mp; 1766 caddr_t ptr; 1767 int len; 1768 { 1769 int s; 1770 struct cd1400 *cd = mp->mp_cd1400; 1771 1772 /* set up io information */ 1773 mp->mp_ptr = ptr; 1774 mp->mp_cnt = len; 1775 1776 /* start transmitting */ 1777 s = spltty(); 1778 if( cd ) { 1779 cd1400_write_reg(cd, CD1400_CAR, 0); 1780 1781 /* output strobe width ~1microsecond */ 1782 cd1400_write_reg(cd, CD1400_TBPR, 10); 1783 1784 /* enable channel */ 1785 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTEN); 1786 cd1400_write_reg(cd, CD1400_SRER, CD1400_SRER_TXRDY); 1787 } 1788 1789 /* ZZzzz... */ 1790 tsleep(mp, PCATCH | PZERO, "mbpp_send", 0); 1791 1792 /* stop transmitting */ 1793 if( cd ) { 1794 cd1400_write_reg(cd, CD1400_CAR, 0); 1795 1796 /* disable transmitter */ 1797 cd1400_write_reg(cd, CD1400_SRER, 0); 1798 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_XMTDIS); 1799 1800 /* flush fifo */ 1801 cd1400_write_ccr(cd, CD1400_CCR_CMDRESET | CD1400_CCR_FTF); 1802 } 1803 splx(s); 1804 1805 /* return number of chars sent */ 1806 return(len - mp->mp_cnt); 1807 } 1808 1809 int 1810 mbpp_recv(mp, ptr, len) 1811 struct mbpp_port *mp; 1812 caddr_t ptr; 1813 int len; 1814 { 1815 int s; 1816 struct cd1400 *cd = mp->mp_cd1400; 1817 1818 /* set up io information */ 1819 mp->mp_ptr = ptr; 1820 mp->mp_cnt = len; 1821 1822 /* start receiving */ 1823 s = spltty(); 1824 if( cd ) { 1825 int rcor, rbpr; 1826 1827 cd1400_write_reg(cd, CD1400_CAR, 0); 1828 1829 /* input strobe at 100kbaud (10microseconds) */ 1830 cd1400_compute_baud(100000, cd->cd_clock, &rcor, &rbpr); 1831 cd1400_write_reg(cd, CD1400_RCOR, rcor); 1832 cd1400_write_reg(cd, CD1400_RBPR, rbpr); 1833 1834 /* rx threshold */ 1835 cd1400_write_reg(cd, CD1400_COR3, MBPP_RX_FIFO_THRESHOLD); 1836 cd1400_write_ccr(cd, CD1400_CCR_CMDCORCHG | CD1400_CCR_COR3); 1837 1838 /* enable channel */ 1839 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_RCVEN); 1840 cd1400_write_reg(cd, CD1400_SRER, CD1400_SRER_RXDATA); 1841 } 1842 1843 /* ZZzzz... */ 1844 tsleep(mp, PCATCH | PZERO, "mbpp_recv", 0); 1845 1846 /* stop receiving */ 1847 if( cd ) { 1848 cd1400_write_reg(cd, CD1400_CAR, 0); 1849 1850 /* disable receiving */ 1851 cd1400_write_reg(cd, CD1400_SRER, 0); 1852 cd1400_write_ccr(cd, CD1400_CCR_CMDCHANCTL | CD1400_CCR_RCVDIS); 1853 } 1854 splx(s); 1855 1856 /* return number of chars received */ 1857 return(len - mp->mp_cnt); 1858 } 1859 1860 int 1861 mbpp_hztoms(h) 1862 int h; 1863 { 1864 int m = h; 1865 1866 if( m > 0 ) 1867 m = m * 1000 / hz; 1868 return(m); 1869 } 1870 1871 int 1872 mbpp_mstohz(m) 1873 int m; 1874 { 1875 int h = m; 1876 1877 if( h > 0 ) { 1878 h = h * hz / 1000; 1879 if( h == 0 ) 1880 h = 1000 / hz; 1881 } 1882 return(h); 1883 } 1884 1885 #endif /* NMAGMA */ 1886
Indexes created Thu Sep 25 06:09:39 GMT 2025