Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/ips/ips.c
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Written by: David Jeffery 5 * Copyright (c) 2002 Adaptec Inc. 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD: releng/12.0/sys/dev/ips/ips.c 326255 2017-11-27 14:52:40Z pfg $"); 32 33 #include <dev/ips/ipsreg.h> 34 #include <dev/ips/ips.h> 35 #include <sys/stat.h> 36 #include <sys/time.h> 37 38 static d_open_t ips_open; 39 static d_close_t ips_close; 40 static d_ioctl_t ips_ioctl; 41 42 MALLOC_DEFINE(M_IPSBUF, "ipsbuf","IPS driver buffer"); 43 44 static struct cdevsw ips_cdevsw = { 45 .d_version = D_VERSION, 46 .d_open = ips_open, 47 .d_close = ips_close, 48 .d_ioctl = ips_ioctl, 49 .d_name = "ips", 50 }; 51 52 static const char* ips_adapter_name[] = { 53 "N/A", 54 "ServeRAID (copperhead)", 55 "ServeRAID II (copperhead refresh)", 56 "ServeRAID onboard (copperhead)", 57 "ServeRAID onboard (copperhead)", 58 "ServeRAID 3H (clarinet)", 59 "ServeRAID 3L (clarinet lite)", 60 "ServeRAID 4H (trombone)", 61 "ServeRAID 4M (morpheus)", 62 "ServeRAID 4L (morpheus lite)", 63 "ServeRAID 4Mx (neo)", 64 "ServeRAID 4Lx (neo lite)", 65 "ServeRAID 5i II (sarasota)", 66 "ServeRAID 5i (sarasota)", 67 "ServeRAID 6M (marco)", 68 "ServeRAID 6i (sebring)", 69 "ServeRAID 7t", 70 "ServeRAID 7k", 71 "ServeRAID 7M" 72 }; 73 74 75 static int ips_open(struct cdev *dev, int flags, int fmt, struct thread *td) 76 { 77 ips_softc_t *sc = dev->si_drv1; 78 mtx_lock(&sc->queue_mtx); 79 sc->state |= IPS_DEV_OPEN; 80 mtx_unlock(&sc->queue_mtx); 81 return 0; 82 } 83 84 static int ips_close(struct cdev *dev, int flags, int fmt, struct thread *td) 85 { 86 ips_softc_t *sc = dev->si_drv1; 87 88 mtx_lock(&sc->queue_mtx); 89 sc->state &= ~IPS_DEV_OPEN; 90 mtx_unlock(&sc->queue_mtx); 91 92 return 0; 93 } 94 95 static int ips_ioctl(struct cdev *dev, u_long command, caddr_t addr, int32_t flags, struct thread *td) 96 { 97 ips_softc_t *sc; 98 99 sc = dev->si_drv1; 100 return ips_ioctl_request(sc, command, addr, flags); 101 } 102 103 static void ips_cmd_dmaload(void *cmdptr, bus_dma_segment_t *segments,int segnum, int error) 104 { 105 ips_command_t *command = cmdptr; 106 PRINTF(10, "ips: in ips_cmd_dmaload\n"); 107 if(!error) 108 command->command_phys_addr = segments[0].ds_addr; 109 110 } 111 112 /* is locking needed? what locking guarantees are there on removal? */ 113 static int ips_cmdqueue_free(ips_softc_t *sc) 114 { 115 int i, error = -1; 116 ips_command_t *command; 117 118 if(!sc->used_commands){ 119 for(i = 0; i < sc->max_cmds; i++){ 120 121 command = &sc->commandarray[i]; 122 123 if(command->command_phys_addr == 0) 124 continue; 125 bus_dmamap_unload(sc->command_dmatag, 126 command->command_dmamap); 127 bus_dmamem_free(sc->command_dmatag, 128 command->command_buffer, 129 command->command_dmamap); 130 if (command->data_dmamap != NULL) 131 bus_dmamap_destroy(command->data_dmatag, 132 command->data_dmamap); 133 } 134 error = 0; 135 sc->state |= IPS_OFFLINE; 136 } 137 sc->staticcmd = NULL; 138 free(sc->commandarray, M_DEVBUF); 139 return error; 140 } 141 142 /* places all ips command structs on the free command queue. No locking as if someone else tries 143 * to access this during init, we have bigger problems */ 144 static int ips_cmdqueue_init(ips_softc_t *sc) 145 { 146 int i; 147 ips_command_t *command; 148 149 sc->commandarray = (ips_command_t *)malloc(sizeof(ips_command_t) * 150 sc->max_cmds, M_DEVBUF, M_NOWAIT|M_ZERO); 151 if (sc->commandarray == NULL) 152 return (ENOMEM); 153 154 SLIST_INIT(&sc->free_cmd_list); 155 for(i = 0; i < sc->max_cmds; i++){ 156 command = &sc->commandarray[i]; 157 command->id = i; 158 command->sc = sc; 159 160 if(bus_dmamem_alloc(sc->command_dmatag,&command->command_buffer, 161 BUS_DMA_NOWAIT, &command->command_dmamap)) 162 goto error; 163 bus_dmamap_load(sc->command_dmatag, command->command_dmamap, 164 command->command_buffer,IPS_COMMAND_LEN, 165 ips_cmd_dmaload, command, BUS_DMA_NOWAIT); 166 if(!command->command_phys_addr){ 167 bus_dmamem_free(sc->command_dmatag, 168 command->command_buffer, command->command_dmamap); 169 goto error; 170 } 171 172 if (i != 0) { 173 command->data_dmatag = sc->sg_dmatag; 174 if (bus_dmamap_create(command->data_dmatag, 0, 175 &command->data_dmamap)) 176 goto error; 177 SLIST_INSERT_HEAD(&sc->free_cmd_list, command, next); 178 } else 179 sc->staticcmd = command; 180 } 181 sc->state &= ~IPS_OFFLINE; 182 return 0; 183 error: 184 ips_cmdqueue_free(sc); 185 return ENOMEM; 186 } 187 188 /* returns a free command struct if one is available. 189 * It also blanks out anything that may be a wild pointer/value. 190 * Also, command buffers are not freed. They are 191 * small so they are saved and kept dmamapped and loaded. 192 */ 193 int ips_get_free_cmd(ips_softc_t *sc, ips_command_t **cmd, unsigned long flags) 194 { 195 ips_command_t *command; 196 197 if(sc->state & IPS_OFFLINE){ 198 return EIO; 199 } 200 if ((flags & IPS_STATIC_FLAG) == 0) { 201 command = SLIST_FIRST(&sc->free_cmd_list); 202 if(!command || (sc->state & IPS_TIMEOUT)){ 203 return EBUSY; 204 } 205 SLIST_REMOVE_HEAD(&sc->free_cmd_list, next); 206 (sc->used_commands)++; 207 } else { 208 if (sc->state & IPS_STATIC_BUSY) 209 return EAGAIN; 210 command = sc->staticcmd; 211 sc->state |= IPS_STATIC_BUSY; 212 } 213 clear_ips_command(command); 214 bzero(command->command_buffer, IPS_COMMAND_LEN); 215 *cmd = command; 216 return 0; 217 } 218 219 /* adds a command back to the free command queue */ 220 void ips_insert_free_cmd(ips_softc_t *sc, ips_command_t *command) 221 { 222 223 if (sema_value(&sc->cmd_sema) != 0) 224 panic("ips: command returned non-zero semaphore"); 225 226 if (command != sc->staticcmd) { 227 SLIST_INSERT_HEAD(&sc->free_cmd_list, command, next); 228 (sc->used_commands)--; 229 } else { 230 sc->state &= ~IPS_STATIC_BUSY; 231 } 232 } 233 static const char* ips_diskdev_statename(u_int8_t state) 234 { 235 static char statebuf[20]; 236 switch(state){ 237 case IPS_LD_OFFLINE: 238 return("OFFLINE"); 239 break; 240 case IPS_LD_OKAY: 241 return("OK"); 242 break; 243 case IPS_LD_DEGRADED: 244 return("DEGRADED"); 245 break; 246 case IPS_LD_FREE: 247 return("FREE"); 248 break; 249 case IPS_LD_SYS: 250 return("SYS"); 251 break; 252 case IPS_LD_CRS: 253 return("CRS"); 254 break; 255 } 256 sprintf(statebuf,"UNKNOWN(0x%02x)", state); 257 return(statebuf); 258 } 259 260 static int ips_diskdev_init(ips_softc_t *sc) 261 { 262 int i; 263 for(i=0; i < IPS_MAX_NUM_DRIVES; i++){ 264 if(sc->drives[i].state == IPS_LD_FREE) continue; 265 device_printf(sc->dev, "Logical Drive %d: RAID%d sectors: %u, state %s\n", 266 i, sc->drives[i].raid_lvl, 267 sc->drives[i].sector_count, 268 ips_diskdev_statename(sc->drives[i].state)); 269 if(sc->drives[i].state == IPS_LD_OKAY || 270 sc->drives[i].state == IPS_LD_DEGRADED){ 271 sc->diskdev[i] = device_add_child(sc->dev, NULL, -1); 272 device_set_ivars(sc->diskdev[i],(void *)(uintptr_t) i); 273 } 274 } 275 if(bus_generic_attach(sc->dev)){ 276 device_printf(sc->dev, "Attaching bus failed\n"); 277 } 278 return 0; 279 } 280 281 static int ips_diskdev_free(ips_softc_t *sc) 282 { 283 int i; 284 int error = 0; 285 for(i = 0; i < IPS_MAX_NUM_DRIVES; i++){ 286 if(sc->diskdev[i]) 287 error = device_delete_child(sc->dev, sc->diskdev[i]); 288 if(error) 289 return error; 290 } 291 bus_generic_detach(sc->dev); 292 return 0; 293 } 294 295 /* ips_timeout is periodically called to make sure no commands sent 296 * to the card have become stuck. If it finds a stuck command, it 297 * sets a flag so the driver won't start any more commands and then 298 * is periodically called to see if all outstanding commands have 299 * either finished or timed out. Once timed out, an attempt to 300 * reinitialize the card is made. If that fails, the driver gives 301 * up and declares the card dead. */ 302 static void ips_timeout(void *arg) 303 { 304 ips_softc_t *sc = arg; 305 int i, state = 0; 306 ips_command_t *command; 307 308 mtx_assert(&sc->queue_mtx, MA_OWNED); 309 command = &sc->commandarray[0]; 310 for(i = 0; i < sc->max_cmds; i++){ 311 if(!command[i].timeout){ 312 continue; 313 } 314 command[i].timeout--; 315 if(!command[i].timeout){ 316 if(!(sc->state & IPS_TIMEOUT)){ 317 sc->state |= IPS_TIMEOUT; 318 device_printf(sc->dev, "WARNING: command timeout. Adapter is in toaster mode, resetting to known state\n"); 319 } 320 ips_set_error(&command[i], ETIMEDOUT); 321 command[i].callback(&command[i]); 322 /* hmm, this should be enough cleanup */ 323 } else 324 state = 1; 325 } 326 if(!state && (sc->state & IPS_TIMEOUT)){ 327 if(sc->ips_adapter_reinit(sc, 1)){ 328 device_printf(sc->dev, "AIEE! adapter reset failed, giving up and going home! Have a nice day.\n"); 329 sc->state |= IPS_OFFLINE; 330 sc->state &= ~IPS_TIMEOUT; 331 /* Grr, I hate this solution. I run waiting commands 332 one at a time and error them out just before they 333 would go to the card. This sucks. */ 334 } else 335 sc->state &= ~IPS_TIMEOUT; 336 } 337 if (sc->state != IPS_OFFLINE) 338 callout_reset(&sc->timer, 10 * hz, ips_timeout, sc); 339 } 340 341 /* check card and initialize it */ 342 int ips_adapter_init(ips_softc_t *sc) 343 { 344 int i; 345 DEVICE_PRINTF(1,sc->dev, "initializing\n"); 346 347 if (bus_dma_tag_create( /* parent */ sc->adapter_dmatag, 348 /* alignemnt */ 1, 349 /* boundary */ 0, 350 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 351 /* highaddr */ BUS_SPACE_MAXADDR, 352 /* filter */ NULL, 353 /* filterarg */ NULL, 354 /* maxsize */ IPS_COMMAND_LEN + 355 IPS_MAX_SG_LEN, 356 /* numsegs */ 1, 357 /* maxsegsize*/ IPS_COMMAND_LEN + 358 IPS_MAX_SG_LEN, 359 /* flags */ 0, 360 /* lockfunc */ NULL, 361 /* lockarg */ NULL, 362 &sc->command_dmatag) != 0) { 363 device_printf(sc->dev, "can't alloc command dma tag\n"); 364 goto error; 365 } 366 if (bus_dma_tag_create( /* parent */ sc->adapter_dmatag, 367 /* alignemnt */ 1, 368 /* boundary */ 0, 369 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 370 /* highaddr */ BUS_SPACE_MAXADDR, 371 /* filter */ NULL, 372 /* filterarg */ NULL, 373 /* maxsize */ IPS_MAX_IOBUF_SIZE, 374 /* numsegs */ IPS_MAX_SG_ELEMENTS, 375 /* maxsegsize*/ IPS_MAX_IOBUF_SIZE, 376 /* flags */ 0, 377 /* lockfunc */ busdma_lock_mutex, 378 /* lockarg */ &sc->queue_mtx, 379 &sc->sg_dmatag) != 0) { 380 device_printf(sc->dev, "can't alloc SG dma tag\n"); 381 goto error; 382 } 383 /* create one command buffer until we know how many commands this card 384 can handle */ 385 sc->max_cmds = 1; 386 ips_cmdqueue_init(sc); 387 388 if(sc->ips_adapter_reinit(sc, 0)) 389 goto error; 390 391 /* initialize ffdc values */ 392 microtime(&sc->ffdc_resettime); 393 sc->ffdc_resetcount = 1; 394 if ((i = ips_ffdc_reset(sc)) != 0) { 395 device_printf(sc->dev, "failed to send ffdc reset to device (%d)\n", i); 396 goto error; 397 } 398 if ((i = ips_get_adapter_info(sc)) != 0) { 399 device_printf(sc->dev, "failed to get adapter configuration data from device (%d)\n", i); 400 goto error; 401 } 402 ips_update_nvram(sc); /* no error check as failure doesn't matter */ 403 if(sc->adapter_type > 0 && sc->adapter_type <= IPS_ADAPTER_MAX_T){ 404 device_printf(sc->dev, "adapter type: %s\n", ips_adapter_name[sc->adapter_type]); 405 } 406 if ((i = ips_get_drive_info(sc)) != 0) { 407 device_printf(sc->dev, "failed to get drive configuration data from device (%d)\n", i); 408 goto error; 409 } 410 411 ips_cmdqueue_free(sc); 412 if(sc->adapter_info.max_concurrent_cmds) 413 sc->max_cmds = min(128, sc->adapter_info.max_concurrent_cmds); 414 else 415 sc->max_cmds = 32; 416 if(ips_cmdqueue_init(sc)){ 417 device_printf(sc->dev, "failed to initialize command buffers\n"); 418 goto error; 419 } 420 sc->device_file = make_dev(&ips_cdevsw, device_get_unit(sc->dev), UID_ROOT, GID_OPERATOR, 421 S_IRUSR | S_IWUSR, "ips%d", device_get_unit(sc->dev)); 422 sc->device_file->si_drv1 = sc; 423 ips_diskdev_init(sc); 424 callout_reset(&sc->timer, 10 * hz, ips_timeout, sc); 425 return 0; 426 427 error: 428 ips_adapter_free(sc); 429 return ENXIO; 430 } 431 432 /* see if we should reinitialize the card and wait for it to timeout or complete initialization */ 433 int ips_morpheus_reinit(ips_softc_t *sc, int force) 434 { 435 u_int32_t tmp; 436 int i; 437 438 tmp = ips_read_4(sc, MORPHEUS_REG_OISR); 439 if(!force && (ips_read_4(sc, MORPHEUS_REG_OMR0) >= IPS_POST1_OK) && 440 (ips_read_4(sc, MORPHEUS_REG_OMR1) != 0xdeadbeef) && !tmp){ 441 ips_write_4(sc, MORPHEUS_REG_OIMR, 0); 442 return 0; 443 } 444 ips_write_4(sc, MORPHEUS_REG_OIMR, 0xff); 445 ips_read_4(sc, MORPHEUS_REG_OIMR); 446 447 device_printf(sc->dev, "resetting adapter, this may take up to 5 minutes\n"); 448 ips_write_4(sc, MORPHEUS_REG_IDR, 0x80000000); 449 DELAY(5000000); 450 ips_read_4(sc, MORPHEUS_REG_OIMR); 451 452 tmp = ips_read_4(sc, MORPHEUS_REG_OISR); 453 for(i = 0; i < 45 && !(tmp & MORPHEUS_BIT_POST1); i++){ 454 DELAY(1000000); 455 DEVICE_PRINTF(2, sc->dev, "post1: %d\n", i); 456 tmp = ips_read_4(sc, MORPHEUS_REG_OISR); 457 } 458 if(tmp & MORPHEUS_BIT_POST1) 459 ips_write_4(sc, MORPHEUS_REG_OISR, MORPHEUS_BIT_POST1); 460 461 if( i == 45 || ips_read_4(sc, MORPHEUS_REG_OMR0) < IPS_POST1_OK){ 462 device_printf(sc->dev,"Adapter error during initialization.\n"); 463 return 1; 464 } 465 for(i = 0; i < 240 && !(tmp & MORPHEUS_BIT_POST2); i++){ 466 DELAY(1000000); 467 DEVICE_PRINTF(2, sc->dev, "post2: %d\n", i); 468 tmp = ips_read_4(sc, MORPHEUS_REG_OISR); 469 } 470 if(tmp & MORPHEUS_BIT_POST2) 471 ips_write_4(sc, MORPHEUS_REG_OISR, MORPHEUS_BIT_POST2); 472 473 if(i == 240 || !ips_read_4(sc, MORPHEUS_REG_OMR1)){ 474 device_printf(sc->dev, "adapter failed config check\n"); 475 return 1; 476 } 477 ips_write_4(sc, MORPHEUS_REG_OIMR, 0); 478 if(force && ips_clear_adapter(sc)){ 479 device_printf(sc->dev, "adapter clear failed\n"); 480 return 1; 481 } 482 return 0; 483 } 484 485 /* clean up so we can unload the driver. */ 486 int ips_adapter_free(ips_softc_t *sc) 487 { 488 int error = 0; 489 if(sc->state & IPS_DEV_OPEN) 490 return EBUSY; 491 if((error = ips_diskdev_free(sc))) 492 return error; 493 if(ips_cmdqueue_free(sc)){ 494 device_printf(sc->dev, 495 "trying to exit when command queue is not empty!\n"); 496 return EBUSY; 497 } 498 DEVICE_PRINTF(1, sc->dev, "free\n"); 499 callout_drain(&sc->timer); 500 501 if(sc->sg_dmatag) 502 bus_dma_tag_destroy(sc->sg_dmatag); 503 if(sc->command_dmatag) 504 bus_dma_tag_destroy(sc->command_dmatag); 505 if(sc->device_file) 506 destroy_dev(sc->device_file); 507 return 0; 508 } 509 510 static __inline int ips_morpheus_check_intr(ips_softc_t *sc) 511 { 512 int cmdnumber; 513 ips_cmd_status_t status; 514 ips_command_t *command; 515 int found = 0; 516 u_int32_t oisr; 517 518 oisr = ips_read_4(sc, MORPHEUS_REG_OISR); 519 PRINTF(9, "interrupt registers out:%x\n", oisr); 520 if(!(oisr & MORPHEUS_BIT_CMD_IRQ)){ 521 DEVICE_PRINTF(2,sc->dev, "got a non-command irq\n"); 522 return (0); 523 } 524 while((status.value = ips_read_4(sc, MORPHEUS_REG_OQPR)) != 0xffffffff){ 525 cmdnumber = status.fields.command_id; 526 command = &sc->commandarray[cmdnumber]; 527 command->status.value = status.value; 528 command->timeout = 0; 529 command->callback(command); 530 531 found = 1; 532 } 533 return (found); 534 } 535 536 void ips_morpheus_intr(void *void_sc) 537 { 538 ips_softc_t *sc = void_sc; 539 540 mtx_lock(&sc->queue_mtx); 541 ips_morpheus_check_intr(sc); 542 mtx_unlock(&sc->queue_mtx); 543 } 544 545 void ips_morpheus_poll(ips_command_t *command) 546 { 547 uint32_t ts; 548 549 /* 550 * Locks are not used here because this is only called during 551 * crashdumps. 552 */ 553 ts = time_second + command->timeout; 554 while ((command->timeout != 0) 555 && (ips_morpheus_check_intr(command->sc) == 0) 556 && (ts > time_second)) 557 DELAY(1000); 558 } 559 560 void ips_issue_morpheus_cmd(ips_command_t *command) 561 { 562 /* hmmm, is there a cleaner way to do this? */ 563 if(command->sc->state & IPS_OFFLINE){ 564 ips_set_error(command, EINVAL); 565 command->callback(command); 566 return; 567 } 568 command->timeout = 10; 569 ips_write_4(command->sc, MORPHEUS_REG_IQPR, command->command_phys_addr); 570 } 571 572 static void ips_copperhead_queue_callback(void *queueptr, bus_dma_segment_t *segments,int segnum, int error) 573 { 574 ips_copper_queue_t *queue = queueptr; 575 if(error){ 576 return; 577 } 578 queue->base_phys_addr = segments[0].ds_addr; 579 } 580 581 static int ips_copperhead_queue_init(ips_softc_t *sc) 582 { 583 int error; 584 bus_dma_tag_t dmatag; 585 bus_dmamap_t dmamap; 586 if (bus_dma_tag_create( /* parent */ sc->adapter_dmatag, 587 /* alignemnt */ 1, 588 /* boundary */ 0, 589 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 590 /* highaddr */ BUS_SPACE_MAXADDR, 591 /* filter */ NULL, 592 /* filterarg */ NULL, 593 /* maxsize */ sizeof(ips_copper_queue_t), 594 /* numsegs */ 1, 595 /* maxsegsize*/ sizeof(ips_copper_queue_t), 596 /* flags */ 0, 597 /* lockfunc */ NULL, 598 /* lockarg */ NULL, 599 &dmatag) != 0) { 600 device_printf(sc->dev, "can't alloc dma tag for statue queue\n"); 601 error = ENOMEM; 602 return error; 603 } 604 if(bus_dmamem_alloc(dmatag, (void *)&(sc->copper_queue), 605 BUS_DMA_NOWAIT, &dmamap)){ 606 error = ENOMEM; 607 goto exit; 608 } 609 bzero(sc->copper_queue, sizeof(ips_copper_queue_t)); 610 sc->copper_queue->dmatag = dmatag; 611 sc->copper_queue->dmamap = dmamap; 612 sc->copper_queue->nextstatus = 1; 613 bus_dmamap_load(dmatag, dmamap, 614 &(sc->copper_queue->status[0]), IPS_MAX_CMD_NUM * 4, 615 ips_copperhead_queue_callback, sc->copper_queue, 616 BUS_DMA_NOWAIT); 617 if(sc->copper_queue->base_phys_addr == 0){ 618 error = ENOMEM; 619 goto exit; 620 } 621 ips_write_4(sc, COPPER_REG_SQSR, sc->copper_queue->base_phys_addr); 622 ips_write_4(sc, COPPER_REG_SQER, sc->copper_queue->base_phys_addr + 623 IPS_MAX_CMD_NUM * 4); 624 ips_write_4(sc, COPPER_REG_SQHR, sc->copper_queue->base_phys_addr + 4); 625 ips_write_4(sc, COPPER_REG_SQTR, sc->copper_queue->base_phys_addr); 626 627 628 return 0; 629 exit: 630 if (sc->copper_queue != NULL) 631 bus_dmamem_free(dmatag, sc->copper_queue, dmamap); 632 bus_dma_tag_destroy(dmatag); 633 return error; 634 } 635 636 /* see if we should reinitialize the card and wait for it to timeout or complete initialization FIXME */ 637 int ips_copperhead_reinit(ips_softc_t *sc, int force) 638 { 639 int i, j; 640 u_int32_t postcode = 0, configstatus = 0; 641 ips_write_1(sc, COPPER_REG_SCPR, 0x80); 642 ips_write_1(sc, COPPER_REG_SCPR, 0); 643 device_printf(sc->dev, "reinitializing adapter, this could take several minutes.\n"); 644 for(j = 0; j < 2; j++){ 645 postcode <<= 8; 646 for(i = 0; i < 45; i++){ 647 if(ips_read_1(sc, COPPER_REG_HISR) & COPPER_GHI_BIT){ 648 postcode |= ips_read_1(sc, COPPER_REG_ISPR); 649 ips_write_1(sc, COPPER_REG_HISR, 650 COPPER_GHI_BIT); 651 break; 652 } else 653 DELAY(1000000); 654 } 655 if(i == 45) 656 return 1; 657 } 658 for(j = 0; j < 2; j++){ 659 configstatus <<= 8; 660 for(i = 0; i < 240; i++){ 661 if(ips_read_1(sc, COPPER_REG_HISR) & COPPER_GHI_BIT){ 662 configstatus |= ips_read_1(sc, COPPER_REG_ISPR); 663 ips_write_1(sc, COPPER_REG_HISR, 664 COPPER_GHI_BIT); 665 break; 666 } else 667 DELAY(1000000); 668 } 669 if(i == 240) 670 return 1; 671 } 672 for(i = 0; i < 240; i++){ 673 if(!(ips_read_1(sc, COPPER_REG_CBSP) & COPPER_OP_BIT)){ 674 break; 675 } else 676 DELAY(1000000); 677 } 678 if(i == 240) 679 return 1; 680 ips_write_2(sc, COPPER_REG_CCCR, 0x1000 | COPPER_ILE_BIT); 681 ips_write_1(sc, COPPER_REG_SCPR, COPPER_EBM_BIT); 682 ips_copperhead_queue_init(sc); 683 ips_write_1(sc, COPPER_REG_HISR, COPPER_GHI_BIT); 684 i = ips_read_1(sc, COPPER_REG_SCPR); 685 ips_write_1(sc, COPPER_REG_HISR, COPPER_EI_BIT); 686 if(!configstatus){ 687 device_printf(sc->dev, "adapter initialization failed\n"); 688 return 1; 689 } 690 if(force && ips_clear_adapter(sc)){ 691 device_printf(sc->dev, "adapter clear failed\n"); 692 return 1; 693 } 694 return 0; 695 } 696 static u_int32_t ips_copperhead_cmd_status(ips_softc_t *sc) 697 { 698 u_int32_t value; 699 int statnum = sc->copper_queue->nextstatus++; 700 if(sc->copper_queue->nextstatus == IPS_MAX_CMD_NUM) 701 sc->copper_queue->nextstatus = 0; 702 value = sc->copper_queue->status[statnum]; 703 ips_write_4(sc, COPPER_REG_SQTR, sc->copper_queue->base_phys_addr + 704 4 * statnum); 705 return value; 706 } 707 708 709 void ips_copperhead_intr(void *void_sc) 710 { 711 ips_softc_t *sc = (ips_softc_t *)void_sc; 712 int cmdnumber; 713 ips_cmd_status_t status; 714 715 mtx_lock(&sc->queue_mtx); 716 while(ips_read_1(sc, COPPER_REG_HISR) & COPPER_SCE_BIT){ 717 status.value = ips_copperhead_cmd_status(sc); 718 cmdnumber = status.fields.command_id; 719 sc->commandarray[cmdnumber].status.value = status.value; 720 sc->commandarray[cmdnumber].timeout = 0; 721 sc->commandarray[cmdnumber].callback(&(sc->commandarray[cmdnumber])); 722 PRINTF(9, "ips: got command %d\n", cmdnumber); 723 } 724 mtx_unlock(&sc->queue_mtx); 725 return; 726 } 727 728 void ips_issue_copperhead_cmd(ips_command_t *command) 729 { 730 int i; 731 /* hmmm, is there a cleaner way to do this? */ 732 if(command->sc->state & IPS_OFFLINE){ 733 ips_set_error(command, EINVAL); 734 command->callback(command); 735 return; 736 } 737 command->timeout = 10; 738 for(i = 0; ips_read_4(command->sc, COPPER_REG_CCCR) & COPPER_SEM_BIT; 739 i++ ){ 740 if( i == 20){ 741 printf("sem bit still set, can't send a command\n"); 742 return; 743 } 744 DELAY(500);/* need to do a delay here */ 745 } 746 ips_write_4(command->sc, COPPER_REG_CCSAR, command->command_phys_addr); 747 ips_write_2(command->sc, COPPER_REG_CCCR, COPPER_CMD_START); 748 } 749 750 void ips_copperhead_poll(ips_command_t *command) 751 { 752 753 printf("ips: cmd polling not implemented for copperhead devices\n"); 754 }
Cache object: b7b1b956b9bdc311e90ee69e83de6725
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