1 /*- 2 * Copyright (c) 1999,2000 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * Copyright (c) 2002 Eric Moore 28 * Copyright (c) 2002 LSI Logic Corporation 29 * All rights reserved. 30 * 31 * Redistribution and use in source and binary forms, with or without 32 * modification, are permitted provided that the following conditions 33 * are met: 34 * 1. Redistributions of source code must retain the above copyright 35 * notice, this list of conditions and the following disclaimer. 36 * 2. Redistributions in binary form must reproduce the above copyright 37 * notice, this list of conditions and the following disclaimer in the 38 * documentation and/or other materials provided with the distribution. 39 * 3. The party using or redistributing the source code and binary forms 40 * agrees to the disclaimer below and the terms and conditions set forth 41 * herein. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 * 55 * $FreeBSD: src/sys/dev/amr/amr.c,v 1.7.2.13 2003/01/15 13:41:18 emoore Exp $ 56 * $DragonFly: src/sys/dev/raid/amr/amr.c,v 1.23 2006/10/25 20:56:00 dillon Exp $ 57 */ 58 59 /* 60 * Driver for the AMI MegaRaid family of controllers. 61 */ 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/malloc.h> 66 #include <sys/kernel.h> 67 68 #include "amr_compat.h" 69 #include <sys/bus.h> 70 #include <sys/conf.h> 71 #include <sys/devicestat.h> 72 #include <sys/disk.h> 73 #include <sys/stat.h> 74 #include <sys/rman.h> 75 76 #include <bus/pci/pcireg.h> 77 #include <bus/pci/pcivar.h> 78 79 #include "amrio.h" 80 #include "amrreg.h" 81 #include "amrvar.h" 82 #define AMR_DEFINE_TABLES 83 #include "amr_tables.h" 84 85 #define AMR_CDEV_MAJOR 132 86 87 static d_open_t amr_open; 88 static d_close_t amr_close; 89 static d_ioctl_t amr_ioctl; 90 91 static struct dev_ops amr_ops = { 92 { "amr", AMR_CDEV_MAJOR, 0 }, 93 .d_open = amr_open, 94 .d_close = amr_close, 95 .d_ioctl = amr_ioctl 96 }; 97 98 /* 99 * Initialisation, bus interface. 100 */ 101 static void amr_startup(void *arg); 102 103 /* 104 * Command wrappers 105 */ 106 static int amr_query_controller(struct amr_softc *sc); 107 static void *amr_enquiry(struct amr_softc *sc, size_t bufsize, 108 u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual); 109 static void amr_completeio(struct amr_command *ac); 110 static int amr_support_ext_cdb(struct amr_softc *sc); 111 112 /* 113 * Command buffer allocation. 114 */ 115 static void amr_alloccmd_cluster(struct amr_softc *sc); 116 static void amr_freecmd_cluster(struct amr_command_cluster *acc); 117 118 /* 119 * Command processing. 120 */ 121 static int amr_bio_command(struct amr_softc *sc, struct amr_command **acp); 122 static int amr_wait_command(struct amr_command *ac); 123 static int amr_getslot(struct amr_command *ac); 124 static void amr_mapcmd(struct amr_command *ac); 125 static void amr_unmapcmd(struct amr_command *ac); 126 static int amr_start(struct amr_command *ac); 127 static void amr_complete(void *context, int pending); 128 129 /* 130 * Status monitoring 131 */ 132 static void amr_periodic(void *data); 133 134 /* 135 * Interface-specific shims 136 */ 137 static int amr_quartz_submit_command(struct amr_softc *sc); 138 static int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 139 static int amr_quartz_poll_command(struct amr_command *ac); 140 141 static int amr_std_submit_command(struct amr_softc *sc); 142 static int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 143 static int amr_std_poll_command(struct amr_command *ac); 144 static void amr_std_attach_mailbox(struct amr_softc *sc); 145 146 #ifdef AMR_BOARD_INIT 147 static int amr_quartz_init(struct amr_softc *sc); 148 static int amr_std_init(struct amr_softc *sc); 149 #endif 150 151 /* 152 * Debugging 153 */ 154 static void amr_describe_controller(struct amr_softc *sc); 155 #ifdef AMR_DEBUG 156 #if 0 157 static void amr_printcommand(struct amr_command *ac); 158 #endif 159 #endif 160 161 DECLARE_DUMMY_MODULE(amr); 162 163 /******************************************************************************** 164 ******************************************************************************** 165 Inline Glue 166 ******************************************************************************** 167 ********************************************************************************/ 168 169 /******************************************************************************** 170 ******************************************************************************** 171 Public Interfaces 172 ******************************************************************************** 173 ********************************************************************************/ 174 175 /******************************************************************************** 176 * Initialise the controller and softc. 177 */ 178 int 179 amr_attach(struct amr_softc *sc) 180 { 181 182 debug_called(1); 183 184 /* 185 * Initialise per-controller queues. 186 */ 187 TAILQ_INIT(&sc->amr_completed); 188 TAILQ_INIT(&sc->amr_freecmds); 189 TAILQ_INIT(&sc->amr_cmd_clusters); 190 TAILQ_INIT(&sc->amr_ready); 191 bioq_init(&sc->amr_bioq); 192 193 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 194 /* 195 * Initialise command-completion task. 196 */ 197 TASK_INIT(&sc->amr_task_complete, 0, amr_complete, sc); 198 #endif 199 200 debug(2, "queue init done"); 201 202 /* 203 * Configure for this controller type. 204 */ 205 if (AMR_IS_QUARTZ(sc)) { 206 sc->amr_submit_command = amr_quartz_submit_command; 207 sc->amr_get_work = amr_quartz_get_work; 208 sc->amr_poll_command = amr_quartz_poll_command; 209 } else { 210 sc->amr_submit_command = amr_std_submit_command; 211 sc->amr_get_work = amr_std_get_work; 212 sc->amr_poll_command = amr_std_poll_command; 213 amr_std_attach_mailbox(sc); 214 } 215 216 #ifdef AMR_BOARD_INIT 217 if ((AMR_IS_QUARTZ(sc) ? amr_quartz_init(sc) : amr_std_init(sc)))) 218 return(ENXIO); 219 #endif 220 221 /* 222 * Quiz controller for features and limits. 223 */ 224 if (amr_query_controller(sc)) 225 return(ENXIO); 226 227 debug(2, "controller query complete"); 228 229 /* 230 * Attach our 'real' SCSI channels to CAM. 231 */ 232 if (amr_cam_attach(sc)) 233 return(ENXIO); 234 debug(2, "CAM attach done"); 235 236 /* 237 * Create the control device. 238 */ 239 dev_ops_add(&amr_ops, -1, device_get_unit(sc->amr_dev)); 240 sc->amr_dev_t = make_dev(&amr_ops, device_get_unit(sc->amr_dev), 241 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 242 "amr%d", device_get_unit(sc->amr_dev)); 243 sc->amr_dev_t->si_drv1 = sc; 244 reference_dev(sc->amr_dev_t); 245 246 /* 247 * Schedule ourselves to bring the controller up once interrupts are 248 * available. 249 */ 250 bzero(&sc->amr_ich, sizeof(struct intr_config_hook)); 251 sc->amr_ich.ich_func = amr_startup; 252 sc->amr_ich.ich_arg = sc; 253 sc->amr_ich.ich_desc = "amr"; 254 if (config_intrhook_establish(&sc->amr_ich) != 0) { 255 device_printf(sc->amr_dev, "can't establish configuration hook\n"); 256 return(ENOMEM); 257 } 258 259 /* 260 * Print a little information about the controller. 261 */ 262 amr_describe_controller(sc); 263 264 debug(2, "attach complete"); 265 return(0); 266 } 267 268 /******************************************************************************** 269 * Locate disk resources and attach children to them. 270 */ 271 static void 272 amr_startup(void *arg) 273 { 274 struct amr_softc *sc = (struct amr_softc *)arg; 275 struct amr_logdrive *dr; 276 int i, error; 277 278 debug_called(1); 279 callout_init(&sc->amr_timeout); 280 281 /* pull ourselves off the intrhook chain */ 282 config_intrhook_disestablish(&sc->amr_ich); 283 284 /* get up-to-date drive information */ 285 if (amr_query_controller(sc)) { 286 device_printf(sc->amr_dev, "can't scan controller for drives\n"); 287 return; 288 } 289 290 /* iterate over available drives */ 291 for (i = 0, dr = &sc->amr_drive[0]; (i < AMR_MAXLD) && (dr->al_size != 0xffffffff); i++, dr++) { 292 /* are we already attached to this drive? */ 293 if (dr->al_disk == 0) { 294 /* generate geometry information */ 295 if (dr->al_size > 0x200000) { /* extended translation? */ 296 dr->al_heads = 255; 297 dr->al_sectors = 63; 298 } else { 299 dr->al_heads = 64; 300 dr->al_sectors = 32; 301 } 302 dr->al_cylinders = dr->al_size / (dr->al_heads * dr->al_sectors); 303 304 dr->al_disk = device_add_child(sc->amr_dev, NULL, -1); 305 if (dr->al_disk == 0) 306 device_printf(sc->amr_dev, "device_add_child failed\n"); 307 device_set_ivars(dr->al_disk, dr); 308 } 309 } 310 311 if ((error = bus_generic_attach(sc->amr_dev)) != 0) 312 device_printf(sc->amr_dev, "bus_generic_attach returned %d\n", error); 313 314 /* mark controller back up */ 315 sc->amr_state &= ~AMR_STATE_SHUTDOWN; 316 317 /* interrupts will be enabled before we do anything more */ 318 sc->amr_state |= AMR_STATE_INTEN; 319 320 /* 321 * Start the timeout routine. 322 */ 323 /* callout_reset(&sc->amr_timeout, hz, amr_periodic, sc); */ 324 325 return; 326 } 327 328 /******************************************************************************* 329 * Free resources associated with a controller instance 330 */ 331 void 332 amr_free(struct amr_softc *sc) 333 { 334 struct amr_command_cluster *acc; 335 336 /* detach from CAM */ 337 amr_cam_detach(sc); 338 339 /* cancel status timeout */ 340 callout_stop(&sc->amr_timeout); 341 342 /* throw away any command buffers */ 343 while ((acc = TAILQ_FIRST(&sc->amr_cmd_clusters)) != NULL) { 344 TAILQ_REMOVE(&sc->amr_cmd_clusters, acc, acc_link); 345 amr_freecmd_cluster(acc); 346 } 347 348 /* destroy control device */ 349 if( sc->amr_dev_t != (cdev_t)NULL) 350 destroy_dev(sc->amr_dev_t); 351 dev_ops_remove(&amr_ops, -1, device_get_unit(sc->amr_dev)); 352 } 353 354 /******************************************************************************* 355 * Receive a bio structure from a child device and queue it on a particular 356 * disk resource, then poke the disk resource to start as much work as it can. 357 */ 358 int 359 amr_submit_bio(struct amr_softc *sc, struct bio *bio) 360 { 361 debug_called(2); 362 363 amr_enqueue_bio(sc, bio); 364 amr_startio(sc); 365 return(0); 366 } 367 368 /******************************************************************************** 369 * Accept an open operation on the control device. 370 */ 371 static int 372 amr_open(struct dev_open_args *ap) 373 { 374 cdev_t dev = ap->a_head.a_dev; 375 int unit = minor(dev); 376 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 377 378 debug_called(1); 379 380 sc->amr_state |= AMR_STATE_OPEN; 381 return(0); 382 } 383 384 /******************************************************************************** 385 * Accept the last close on the control device. 386 */ 387 static int 388 amr_close(struct dev_close_args *ap) 389 { 390 cdev_t dev = ap->a_head.a_dev; 391 int unit = minor(dev); 392 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 393 394 debug_called(1); 395 396 sc->amr_state &= ~AMR_STATE_OPEN; 397 return (0); 398 } 399 400 /******************************************************************************** 401 * Handle controller-specific control operations. 402 */ 403 static int 404 amr_ioctl(struct dev_ioctl_args *ap) 405 { 406 cdev_t dev = ap->a_head.a_dev; 407 struct amr_softc *sc = (struct amr_softc *)dev->si_drv1; 408 int *arg = (int *)ap->a_data; 409 struct amr_user_ioctl *au = (struct amr_user_ioctl *)ap->a_data; 410 struct amr_command *ac; 411 struct amr_mailbox_ioctl *mbi; 412 struct amr_passthrough *apt; 413 void *dp; 414 int error; 415 416 debug_called(1); 417 418 error = 0; 419 dp = NULL; 420 apt = NULL; 421 ac = NULL; 422 switch(ap->a_cmd) { 423 424 case AMR_IO_VERSION: 425 debug(1, "AMR_IO_VERSION"); 426 *arg = AMR_IO_VERSION_NUMBER; 427 break; 428 429 case AMR_IO_COMMAND: 430 debug(1, "AMR_IO_COMMAND 0x%x", au->au_cmd[0]); 431 /* handle inbound data buffer */ 432 if (au->au_length != 0) { 433 if ((dp = kmalloc(au->au_length, M_DEVBUF, M_WAITOK)) == NULL) { 434 error = ENOMEM; 435 break; 436 } 437 if ((error = copyin(au->au_buffer, dp, au->au_length)) != 0) 438 break; 439 debug(2, "copyin %ld bytes from %p -> %p", au->au_length, au->au_buffer, dp); 440 } 441 442 if ((ac = amr_alloccmd(sc)) == NULL) { 443 error = ENOMEM; 444 break; 445 } 446 447 /* handle SCSI passthrough command */ 448 if (au->au_cmd[0] == AMR_CMD_PASS) { 449 if ((apt = kmalloc(sizeof(*apt), M_DEVBUF, M_WAITOK | M_ZERO)) == NULL) { 450 error = ENOMEM; 451 break; 452 } 453 454 /* copy cdb */ 455 apt->ap_cdb_length = au->au_cmd[2]; 456 bcopy(&au->au_cmd[3], &apt->ap_cdb[0], apt->ap_cdb_length); 457 458 /* build passthrough */ 459 apt->ap_timeout = au->au_cmd[apt->ap_cdb_length + 3] & 0x07; 460 apt->ap_ars = (au->au_cmd[apt->ap_cdb_length + 3] & 0x08) ? 1 : 0; 461 apt->ap_islogical = (au->au_cmd[apt->ap_cdb_length + 3] & 0x80) ? 1 : 0; 462 apt->ap_logical_drive_no = au->au_cmd[apt->ap_cdb_length + 4]; 463 apt->ap_channel = au->au_cmd[apt->ap_cdb_length + 5]; 464 apt->ap_scsi_id = au->au_cmd[apt->ap_cdb_length + 6]; 465 apt->ap_request_sense_length = 14; 466 apt->ap_data_transfer_length = au->au_length; 467 /* XXX what about the request-sense area? does the caller want it? */ 468 469 /* build command */ 470 ac->ac_data = apt; 471 ac->ac_length = sizeof(*apt); 472 ac->ac_flags |= AMR_CMD_DATAOUT; 473 ac->ac_ccb_data = dp; 474 ac->ac_ccb_length = au->au_length; 475 if (au->au_direction & AMR_IO_READ) 476 ac->ac_flags |= AMR_CMD_CCB_DATAIN; 477 if (au->au_direction & AMR_IO_WRITE) 478 ac->ac_flags |= AMR_CMD_CCB_DATAOUT; 479 480 ac->ac_mailbox.mb_command = AMR_CMD_PASS; 481 482 } else { 483 /* direct command to controller */ 484 mbi = (struct amr_mailbox_ioctl *)&ac->ac_mailbox; 485 486 /* copy pertinent mailbox items */ 487 mbi->mb_command = au->au_cmd[0]; 488 mbi->mb_channel = au->au_cmd[1]; 489 mbi->mb_param = au->au_cmd[2]; 490 mbi->mb_pad[0] = au->au_cmd[3]; 491 mbi->mb_drive = au->au_cmd[4]; 492 493 /* build the command */ 494 ac->ac_data = dp; 495 ac->ac_length = au->au_length; 496 if (au->au_direction & AMR_IO_READ) 497 ac->ac_flags |= AMR_CMD_DATAIN; 498 if (au->au_direction & AMR_IO_WRITE) 499 ac->ac_flags |= AMR_CMD_DATAOUT; 500 } 501 502 /* run the command */ 503 if ((error = amr_wait_command(ac)) != 0) 504 break; 505 506 /* copy out data and set status */ 507 if (au->au_length != 0) 508 error = copyout(dp, au->au_buffer, au->au_length); 509 debug(2, "copyout %ld bytes from %p -> %p", au->au_length, dp, au->au_buffer); 510 if (dp != NULL) 511 debug(2, "%16d", (int)dp); 512 au->au_status = ac->ac_status; 513 break; 514 515 default: 516 debug(1, "unknown ioctl 0x%lx", cmd); 517 error = ENOIOCTL; 518 break; 519 } 520 521 if (dp != NULL) 522 kfree(dp, M_DEVBUF); 523 if (apt != NULL) 524 kfree(apt, M_DEVBUF); 525 if (ac != NULL) 526 amr_releasecmd(ac); 527 return(error); 528 } 529 530 /******************************************************************************** 531 ******************************************************************************** 532 Status Monitoring 533 ******************************************************************************** 534 ********************************************************************************/ 535 536 /******************************************************************************** 537 * Perform a periodic check of the controller status 538 */ 539 static void 540 amr_periodic(void *data) 541 { 542 struct amr_softc *sc = (struct amr_softc *)data; 543 544 debug_called(2); 545 546 /* XXX perform periodic status checks here */ 547 548 /* compensate for missed interrupts */ 549 amr_done(sc); 550 551 /* reschedule */ 552 callout_reset(&sc->amr_timeout, hz, amr_periodic, sc); 553 } 554 555 /******************************************************************************** 556 ******************************************************************************** 557 Command Wrappers 558 ******************************************************************************** 559 ********************************************************************************/ 560 561 /******************************************************************************** 562 * Interrogate the controller for the operational parameters we require. 563 */ 564 static int 565 amr_query_controller(struct amr_softc *sc) 566 { 567 struct amr_enquiry3 *aex; 568 struct amr_prodinfo *ap; 569 struct amr_enquiry *ae; 570 int ldrv; 571 572 /* 573 * If we haven't found the real limit yet, let us have a couple of commands in 574 * order to be able to probe. 575 */ 576 if (sc->amr_maxio == 0) 577 sc->amr_maxio = 2; 578 579 /* 580 * Greater than 10 byte cdb support 581 */ 582 sc->support_ext_cdb = amr_support_ext_cdb(sc); 583 584 if(sc->support_ext_cdb) { 585 debug(2,"supports extended CDBs."); 586 } 587 588 /* 589 * Try to issue an ENQUIRY3 command 590 */ 591 if ((aex = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_ENQ3, 592 AMR_CONFIG_ENQ3_SOLICITED_FULL)) != NULL) { 593 594 /* 595 * Fetch current state of logical drives. 596 */ 597 for (ldrv = 0; ldrv < aex->ae_numldrives; ldrv++) { 598 sc->amr_drive[ldrv].al_size = aex->ae_drivesize[ldrv]; 599 sc->amr_drive[ldrv].al_state = aex->ae_drivestate[ldrv]; 600 sc->amr_drive[ldrv].al_properties = aex->ae_driveprop[ldrv]; 601 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 602 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 603 } 604 kfree(aex, M_DEVBUF); 605 606 /* 607 * Get product info for channel count. 608 */ 609 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) == NULL) { 610 device_printf(sc->amr_dev, "can't obtain product data from controller\n"); 611 return(1); 612 } 613 sc->amr_maxdrives = 40; 614 sc->amr_maxchan = ap->ap_nschan; 615 sc->amr_maxio = ap->ap_maxio; 616 sc->amr_type |= AMR_TYPE_40LD; 617 kfree(ap, M_DEVBUF); 618 619 } else { 620 621 /* failed, try the 8LD ENQUIRY commands */ 622 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) == NULL) { 623 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) == NULL) { 624 device_printf(sc->amr_dev, "can't obtain configuration data from controller\n"); 625 return(1); 626 } 627 ae->ae_signature = 0; 628 } 629 630 /* 631 * Fetch current state of logical drives. 632 */ 633 for (ldrv = 0; ldrv < ae->ae_ldrv.al_numdrives; ldrv++) { 634 sc->amr_drive[ldrv].al_size = ae->ae_ldrv.al_size[ldrv]; 635 sc->amr_drive[ldrv].al_state = ae->ae_ldrv.al_state[ldrv]; 636 sc->amr_drive[ldrv].al_properties = ae->ae_ldrv.al_properties[ldrv]; 637 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 638 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 639 } 640 641 sc->amr_maxdrives = 8; 642 sc->amr_maxchan = ae->ae_adapter.aa_channels; 643 sc->amr_maxio = ae->ae_adapter.aa_maxio; 644 kfree(ae, M_DEVBUF); 645 } 646 647 /* 648 * Mark remaining drives as unused. 649 */ 650 for (; ldrv < AMR_MAXLD; ldrv++) 651 sc->amr_drive[ldrv].al_size = 0xffffffff; 652 653 /* 654 * Cap the maximum number of outstanding I/Os. AMI's Linux driver doesn't trust 655 * the controller's reported value, and lockups have been seen when we do. 656 */ 657 sc->amr_maxio = imin(sc->amr_maxio, AMR_LIMITCMD); 658 659 return(0); 660 } 661 662 /******************************************************************************** 663 * Run a generic enquiry-style command. 664 */ 665 static void * 666 amr_enquiry(struct amr_softc *sc, size_t bufsize, u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual) 667 { 668 struct amr_command *ac; 669 void *result; 670 u_int8_t *mbox; 671 int error; 672 673 debug_called(1); 674 675 error = 1; 676 result = NULL; 677 678 /* get ourselves a command buffer */ 679 if ((ac = amr_alloccmd(sc)) == NULL) 680 goto out; 681 /* allocate the response structure */ 682 result = kmalloc(bufsize, M_DEVBUF, M_INTWAIT); 683 /* set command flags */ 684 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 685 686 /* point the command at our data */ 687 ac->ac_data = result; 688 ac->ac_length = bufsize; 689 690 /* build the command proper */ 691 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 692 mbox[0] = cmd; 693 mbox[2] = cmdsub; 694 mbox[3] = cmdqual; 695 696 /* can't assume that interrupts are going to work here, so play it safe */ 697 if (sc->amr_poll_command(ac)) 698 goto out; 699 error = ac->ac_status; 700 701 out: 702 if (ac != NULL) 703 amr_releasecmd(ac); 704 if ((error != 0) && (result != NULL)) { 705 kfree(result, M_DEVBUF); 706 result = NULL; 707 } 708 return(result); 709 } 710 711 /******************************************************************************** 712 * Flush the controller's internal cache, return status. 713 */ 714 int 715 amr_flush(struct amr_softc *sc) 716 { 717 struct amr_command *ac; 718 int error; 719 720 /* get ourselves a command buffer */ 721 error = 1; 722 if ((ac = amr_alloccmd(sc)) == NULL) 723 goto out; 724 /* set command flags */ 725 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 726 727 /* build the command proper */ 728 ac->ac_mailbox.mb_command = AMR_CMD_FLUSH; 729 730 /* we have to poll, as the system may be going down or otherwise damaged */ 731 if (sc->amr_poll_command(ac)) 732 goto out; 733 error = ac->ac_status; 734 735 out: 736 if (ac != NULL) 737 amr_releasecmd(ac); 738 return(error); 739 } 740 741 /******************************************************************************** 742 * Detect extented cdb >> greater than 10 byte cdb support 743 * returns '1' means this support exist 744 * returns '0' means this support doesn't exist 745 */ 746 static int 747 amr_support_ext_cdb(struct amr_softc *sc) 748 { 749 struct amr_command *ac; 750 u_int8_t *mbox; 751 int error; 752 753 /* get ourselves a command buffer */ 754 error = 0; 755 if ((ac = amr_alloccmd(sc)) == NULL) 756 goto out; 757 /* set command flags */ 758 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 759 760 /* build the command proper */ 761 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 762 mbox[0] = 0xA4; 763 mbox[2] = 0x16; 764 765 766 /* we have to poll, as the system may be going down or otherwise damaged */ 767 if (sc->amr_poll_command(ac)) 768 goto out; 769 if( ac->ac_status == AMR_STATUS_SUCCESS ) { 770 error = 1; 771 } 772 773 out: 774 if (ac != NULL) 775 amr_releasecmd(ac); 776 return(error); 777 } 778 779 /******************************************************************************** 780 * Try to find I/O work for the controller from one or more of the work queues. 781 * 782 * We make the assumption that if the controller is not ready to take a command 783 * at some given time, it will generate an interrupt at some later time when 784 * it is. 785 */ 786 void 787 amr_startio(struct amr_softc *sc) 788 { 789 struct amr_command *ac; 790 791 /* spin until something prevents us from doing any work */ 792 for (;;) { 793 794 /* try to get a ready command */ 795 ac = amr_dequeue_ready(sc); 796 797 /* if that failed, build a command from a bio */ 798 if (ac == NULL) 799 (void)amr_bio_command(sc, &ac); 800 801 /* if that failed, build a command from a ccb */ 802 if (ac == NULL) 803 (void)amr_cam_command(sc, &ac); 804 805 /* if we don't have anything to do, give up */ 806 if (ac == NULL) 807 break; 808 809 /* try to give the command to the controller; if this fails save it for later and give up */ 810 if (amr_start(ac)) { 811 debug(2, "controller busy, command deferred"); 812 amr_requeue_ready(ac); /* XXX schedule retry very soon? */ 813 break; 814 } 815 } 816 } 817 818 /******************************************************************************** 819 * Handle completion of an I/O command. 820 */ 821 static void 822 amr_completeio(struct amr_command *ac) 823 { 824 struct amr_softc *sc = ac->ac_sc; 825 826 if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */ 827 ac->ac_bio->bio_buf->b_error = EIO; 828 ac->ac_bio->bio_buf->b_flags |= B_ERROR; 829 830 device_printf(sc->amr_dev, "I/O error - 0x%x\n", ac->ac_status); 831 /* amr_printcommand(ac);*/ 832 } 833 amrd_intr(ac->ac_bio); 834 amr_releasecmd(ac); 835 } 836 837 /******************************************************************************** 838 ******************************************************************************** 839 Command Processing 840 ******************************************************************************** 841 ********************************************************************************/ 842 843 /******************************************************************************** 844 * Convert a bio off the top of the bio queue into a command. 845 */ 846 static int 847 amr_bio_command(struct amr_softc *sc, struct amr_command **acp) 848 { 849 struct amr_command *ac; 850 struct amrd_softc *amrd; 851 struct bio *bio; 852 int error; 853 int blkcount; 854 int driveno; 855 int cmd; 856 u_int32_t lba; 857 858 ac = NULL; 859 error = 0; 860 861 /* get a bio to work on */ 862 if ((bio = amr_dequeue_bio(sc)) == NULL) 863 goto out; 864 865 /* get a command */ 866 if ((ac = amr_alloccmd(sc)) == NULL) { 867 error = ENOMEM; 868 goto out; 869 } 870 871 /* connect the bio to the command */ 872 ac->ac_complete = amr_completeio; 873 ac->ac_bio = bio; 874 ac->ac_data = bio->bio_buf->b_data; 875 ac->ac_length = bio->bio_buf->b_bcount; 876 if (bio->bio_buf->b_cmd == BUF_CMD_READ) { 877 ac->ac_flags |= AMR_CMD_DATAIN; 878 cmd = AMR_CMD_LREAD; 879 } else { 880 ac->ac_flags |= AMR_CMD_DATAOUT; 881 cmd = AMR_CMD_LWRITE; 882 } 883 amrd = (struct amrd_softc *)bio->bio_driver_info; 884 driveno = amrd->amrd_drive - sc->amr_drive; 885 blkcount = (bio->bio_buf->b_bcount + AMR_BLKSIZE - 1) / AMR_BLKSIZE; 886 lba = bio->bio_offset / AMR_BLKSIZE; 887 888 ac->ac_mailbox.mb_command = cmd; 889 ac->ac_mailbox.mb_blkcount = blkcount; 890 ac->ac_mailbox.mb_lba = lba; 891 ac->ac_mailbox.mb_drive = driveno; 892 /* we fill in the s/g related data when the command is mapped */ 893 894 if ((lba + blkcount) > sc->amr_drive[driveno].al_size) 895 device_printf(sc->amr_dev, "I/O beyond end of unit (%ud,%d > %lu)\n", 896 lba, blkcount, 897 (u_long)sc->amr_drive[driveno].al_size); 898 899 out: 900 if (error != 0) { 901 if (ac != NULL) 902 amr_releasecmd(ac); 903 if (bio != NULL) /* this breaks ordering... */ 904 amr_enqueue_bio(sc, bio); 905 } 906 *acp = ac; 907 return(error); 908 } 909 910 /******************************************************************************** 911 * Take a command, submit it to the controller and sleep until it completes 912 * or fails. Interrupts must be enabled, returns nonzero on error. 913 */ 914 static int 915 amr_wait_command(struct amr_command *ac) 916 { 917 int error, count; 918 919 debug_called(1); 920 921 ac->ac_complete = NULL; 922 ac->ac_flags |= AMR_CMD_SLEEP; 923 if ((error = amr_start(ac)) != 0) 924 return(error); 925 926 count = 0; 927 /* XXX better timeout? */ 928 while ((ac->ac_flags & AMR_CMD_BUSY) && (count < 30)) { 929 tsleep(ac, PCATCH, "amrwcmd", hz); 930 } 931 return(0); 932 } 933 934 /******************************************************************************** 935 * Take a command, submit it to the controller and busy-wait for it to return. 936 * Returns nonzero on error. Can be safely called with interrupts enabled. 937 */ 938 static int 939 amr_std_poll_command(struct amr_command *ac) 940 { 941 struct amr_softc *sc = ac->ac_sc; 942 int error, count; 943 944 debug_called(2); 945 946 ac->ac_complete = NULL; 947 if ((error = amr_start(ac)) != 0) 948 return(error); 949 950 count = 0; 951 do { 952 /* 953 * Poll for completion, although the interrupt handler may beat us to it. 954 * Note that the timeout here is somewhat arbitrary. 955 */ 956 amr_done(sc); 957 DELAY(1000); 958 } while ((ac->ac_flags & AMR_CMD_BUSY) && (count++ < 1000)); 959 if (!(ac->ac_flags & AMR_CMD_BUSY)) { 960 error = 0; 961 } else { 962 /* XXX the slot is now marked permanently busy */ 963 error = EIO; 964 device_printf(sc->amr_dev, "polled command timeout\n"); 965 } 966 return(error); 967 } 968 969 /******************************************************************************** 970 * Take a command, submit it to the controller and busy-wait for it to return. 971 * Returns nonzero on error. Can be safely called with interrupts enabled. 972 */ 973 static int 974 amr_quartz_poll_command(struct amr_command *ac) 975 { 976 struct amr_softc *sc = ac->ac_sc; 977 int error,count; 978 979 debug_called(2); 980 981 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 982 amr_mapcmd(ac); 983 984 crit_enter(); 985 986 if (sc->amr_state & AMR_STATE_INTEN) { 987 count=0; 988 while (sc->amr_busyslots) { 989 tsleep(sc, PCATCH, "amrpoll", hz); 990 if(count++>10) { 991 break; 992 } 993 } 994 995 if(sc->amr_busyslots) { 996 device_printf(sc->amr_dev, "adapter is busy\n"); 997 crit_exit(); 998 amr_unmapcmd(ac); 999 ac->ac_status=0; 1000 return(1); 1001 } 1002 } 1003 1004 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1005 1006 /* clear the poll/ack fields in the mailbox */ 1007 sc->amr_mailbox->mb_ident = 0xFE; 1008 sc->amr_mailbox->mb_nstatus = 0xFF; 1009 sc->amr_mailbox->mb_status = 0xFF; 1010 sc->amr_mailbox->mb_poll = 0; 1011 sc->amr_mailbox->mb_ack = 0; 1012 sc->amr_mailbox->mb_busy = 1; 1013 1014 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1015 1016 while(sc->amr_mailbox->mb_nstatus == 0xFF); 1017 while(sc->amr_mailbox->mb_status == 0xFF); 1018 ac->ac_status=sc->amr_mailbox->mb_status; 1019 error = (ac->ac_status !=AMR_STATUS_SUCCESS) ? 1:0; 1020 while(sc->amr_mailbox->mb_poll != 0x77); 1021 sc->amr_mailbox->mb_poll = 0; 1022 sc->amr_mailbox->mb_ack = 0x77; 1023 1024 /* acknowledge that we have the commands */ 1025 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1026 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK); 1027 1028 crit_exit(); 1029 1030 /* unmap the command's data buffer */ 1031 amr_unmapcmd(ac); 1032 1033 return(error); 1034 } 1035 1036 /******************************************************************************** 1037 * Get a free command slot for a command if it doesn't already have one. 1038 * 1039 * May be safely called multiple times for a given command. 1040 */ 1041 static int 1042 amr_getslot(struct amr_command *ac) 1043 { 1044 struct amr_softc *sc = ac->ac_sc; 1045 int slot, limit, error; 1046 1047 debug_called(3); 1048 1049 /* if the command already has a slot, don't try to give it another one */ 1050 if (ac->ac_slot != 0) 1051 return(0); 1052 1053 /* enforce slot usage limit */ 1054 limit = (ac->ac_flags & AMR_CMD_PRIORITY) ? sc->amr_maxio : sc->amr_maxio - 4; 1055 if (sc->amr_busyslots > limit) 1056 return(EBUSY); 1057 1058 /* 1059 * Allocate a slot. XXX linear scan is slow 1060 */ 1061 error = EBUSY; 1062 crit_enter(); 1063 for (slot = 0; slot < sc->amr_maxio; slot++) { 1064 if (sc->amr_busycmd[slot] == NULL) { 1065 sc->amr_busycmd[slot] = ac; 1066 sc->amr_busyslots++; 1067 ac->ac_slot = slot; 1068 error = 0; 1069 break; 1070 } 1071 } 1072 crit_exit(); 1073 1074 return(error); 1075 } 1076 1077 /******************************************************************************** 1078 * Map/unmap (ac)'s data in the controller's addressable space as required. 1079 * 1080 * These functions may be safely called multiple times on a given command. 1081 */ 1082 static void 1083 amr_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1084 { 1085 struct amr_command *ac = (struct amr_command *)arg; 1086 struct amr_softc *sc = ac->ac_sc; 1087 struct amr_sgentry *sg; 1088 int i; 1089 u_int8_t *sgc; 1090 1091 debug_called(3); 1092 1093 /* get base address of s/g table */ 1094 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1095 1096 /* save data physical address */ 1097 ac->ac_dataphys = segs[0].ds_addr; 1098 1099 /* for AMR_CMD_CONFIG the s/g count goes elsewhere */ 1100 if (ac->ac_mailbox.mb_command == AMR_CMD_CONFIG) { 1101 sgc = &(((struct amr_mailbox_ioctl *)&ac->ac_mailbox)->mb_param); 1102 } else { 1103 sgc = &ac->ac_mailbox.mb_nsgelem; 1104 } 1105 1106 /* decide whether we need to populate the s/g table */ 1107 if (nsegments < 2) { 1108 *sgc = 0; 1109 ac->ac_mailbox.mb_nsgelem = 0; 1110 ac->ac_mailbox.mb_physaddr = ac->ac_dataphys; 1111 } else { 1112 ac->ac_mailbox.mb_nsgelem = nsegments; 1113 *sgc = nsegments; 1114 ac->ac_mailbox.mb_physaddr = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1115 for (i = 0; i < nsegments; i++, sg++) { 1116 sg->sg_addr = segs[i].ds_addr; 1117 sg->sg_count = segs[i].ds_len; 1118 } 1119 } 1120 } 1121 1122 static void 1123 amr_setup_ccbmap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1124 { 1125 struct amr_command *ac = (struct amr_command *)arg; 1126 struct amr_softc *sc = ac->ac_sc; 1127 struct amr_sgentry *sg; 1128 struct amr_passthrough *ap = (struct amr_passthrough *)ac->ac_data; 1129 struct amr_ext_passthrough *aep = (struct amr_ext_passthrough *)ac->ac_data; 1130 int i; 1131 1132 /* get base address of s/g table */ 1133 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1134 1135 /* decide whether we need to populate the s/g table */ 1136 if( ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS ) { 1137 if (nsegments < 2) { 1138 aep->ap_no_sg_elements = 0; 1139 aep->ap_data_transfer_address = segs[0].ds_addr; 1140 } else { 1141 /* save s/g table information in passthrough */ 1142 aep->ap_no_sg_elements = nsegments; 1143 aep->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1144 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1145 for (i = 0; i < nsegments; i++, sg++) { 1146 sg->sg_addr = segs[i].ds_addr; 1147 sg->sg_count = segs[i].ds_len; 1148 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1149 } 1150 } 1151 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1152 aep->ap_no_sg_elements, aep->ap_data_transfer_address, ac->ac_dataphys); 1153 } else { 1154 if (nsegments < 2) { 1155 ap->ap_no_sg_elements = 0; 1156 ap->ap_data_transfer_address = segs[0].ds_addr; 1157 } else { 1158 /* save s/g table information in passthrough */ 1159 ap->ap_no_sg_elements = nsegments; 1160 ap->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1161 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1162 for (i = 0; i < nsegments; i++, sg++) { 1163 sg->sg_addr = segs[i].ds_addr; 1164 sg->sg_count = segs[i].ds_len; 1165 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1166 } 1167 } 1168 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1169 ap->ap_no_sg_elements, ap->ap_data_transfer_address, ac->ac_dataphys); 1170 } 1171 } 1172 1173 static void 1174 amr_mapcmd(struct amr_command *ac) 1175 { 1176 struct amr_softc *sc = ac->ac_sc; 1177 1178 debug_called(3); 1179 1180 /* if the command involves data at all, and hasn't been mapped */ 1181 if (!(ac->ac_flags & AMR_CMD_MAPPED)) { 1182 1183 if (ac->ac_data != NULL) { 1184 /* map the data buffers into bus space and build the s/g list */ 1185 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_dmamap, ac->ac_data, ac->ac_length, 1186 amr_setup_dmamap, ac, 0); 1187 if (ac->ac_flags & AMR_CMD_DATAIN) 1188 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREREAD); 1189 if (ac->ac_flags & AMR_CMD_DATAOUT) 1190 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREWRITE); 1191 } 1192 1193 if (ac->ac_ccb_data != NULL) { 1194 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, ac->ac_ccb_data, ac->ac_ccb_length, 1195 amr_setup_ccbmap, ac, 0); 1196 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1197 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREREAD); 1198 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1199 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREWRITE); 1200 } 1201 ac->ac_flags |= AMR_CMD_MAPPED; 1202 } 1203 } 1204 1205 static void 1206 amr_unmapcmd(struct amr_command *ac) 1207 { 1208 struct amr_softc *sc = ac->ac_sc; 1209 1210 debug_called(3); 1211 1212 /* if the command involved data at all and was mapped */ 1213 if (ac->ac_flags & AMR_CMD_MAPPED) { 1214 1215 if (ac->ac_data != NULL) { 1216 if (ac->ac_flags & AMR_CMD_DATAIN) 1217 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTREAD); 1218 if (ac->ac_flags & AMR_CMD_DATAOUT) 1219 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE); 1220 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap); 1221 } 1222 1223 if (ac->ac_ccb_data != NULL) { 1224 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1225 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTREAD); 1226 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1227 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTWRITE); 1228 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_ccb_dmamap); 1229 } 1230 ac->ac_flags &= ~AMR_CMD_MAPPED; 1231 } 1232 } 1233 1234 /******************************************************************************** 1235 * Take a command and give it to the controller, returns 0 if successful, or 1236 * EBUSY if the command should be retried later. 1237 */ 1238 static int 1239 amr_start(struct amr_command *ac) 1240 { 1241 struct amr_softc *sc = ac->ac_sc; 1242 int done, i; 1243 1244 debug_called(3); 1245 1246 /* mark command as busy so that polling consumer can tell */ 1247 ac->ac_flags |= AMR_CMD_BUSY; 1248 1249 /* get a command slot (freed in amr_done) */ 1250 if (amr_getslot(ac)) 1251 return(EBUSY); 1252 1253 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 1254 amr_mapcmd(ac); 1255 1256 /* mark the new mailbox we are going to copy in as busy */ 1257 ac->ac_mailbox.mb_busy = 1; 1258 1259 /* clear the poll/ack fields in the mailbox */ 1260 sc->amr_mailbox->mb_poll = 0; 1261 sc->amr_mailbox->mb_ack = 0; 1262 1263 /* 1264 * Save the slot number so that we can locate this command when complete. 1265 * Note that ident = 0 seems to be special, so we don't use it. 1266 */ 1267 ac->ac_mailbox.mb_ident = ac->ac_slot + 1; 1268 1269 /* 1270 * Spin waiting for the mailbox, give up after ~1 second. We expect the 1271 * controller to be able to handle our I/O. 1272 * 1273 * XXX perhaps we should wait for less time, and count on the deferred command 1274 * handling to deal with retries? 1275 */ 1276 debug(4, "wait for mailbox"); 1277 for (i = 10000, done = 0; (i > 0) && !done; i--) { 1278 crit_enter(); 1279 1280 /* is the mailbox free? */ 1281 if (sc->amr_mailbox->mb_busy == 0) { 1282 debug(4, "got mailbox"); 1283 sc->amr_mailbox64->mb64_segment = 0; 1284 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1285 done = 1; 1286 1287 /* not free, spin waiting */ 1288 } else { 1289 debug(4, "busy flag %x\n", sc->amr_mailbox->mb_busy); 1290 /* this is somewhat ugly */ 1291 DELAY(100); 1292 } 1293 crit_exit(); 1294 } 1295 1296 /* 1297 * Now give the command to the controller 1298 */ 1299 if (done) { 1300 if (sc->amr_submit_command(sc)) { 1301 /* the controller wasn't ready to take the command, forget that we tried to post it */ 1302 sc->amr_mailbox->mb_busy = 0; 1303 return(EBUSY); 1304 } 1305 debug(3, "posted command"); 1306 return(0); 1307 } 1308 1309 /* 1310 * The controller wouldn't take the command. Return the command as busy 1311 * so that it is retried later. 1312 */ 1313 return(EBUSY); 1314 } 1315 1316 /******************************************************************************** 1317 * Extract one or more completed commands from the controller (sc) 1318 * 1319 * Returns nonzero if any commands on the work queue were marked as completed. 1320 */ 1321 int 1322 amr_done(struct amr_softc *sc) 1323 { 1324 struct amr_command *ac; 1325 struct amr_mailbox mbox; 1326 int i, idx, result; 1327 1328 debug_called(3); 1329 1330 /* See if there's anything for us to do */ 1331 result = 0; 1332 1333 /* loop collecting completed commands */ 1334 for (;;) { 1335 /* poll for a completed command's identifier and status */ 1336 if (sc->amr_get_work(sc, &mbox)) { 1337 result = 1; 1338 1339 /* iterate over completed commands in this result */ 1340 for (i = 0; i < mbox.mb_nstatus; i++) { 1341 /* get pointer to busy command */ 1342 idx = mbox.mb_completed[i] - 1; 1343 ac = sc->amr_busycmd[idx]; 1344 1345 /* really a busy command? */ 1346 if (ac != NULL) { 1347 1348 /* pull the command from the busy index */ 1349 sc->amr_busycmd[idx] = NULL; 1350 sc->amr_busyslots--; 1351 1352 /* save status for later use */ 1353 ac->ac_status = mbox.mb_status; 1354 amr_enqueue_completed(ac); 1355 debug(3, "completed command with status %x", mbox.mb_status); 1356 } else { 1357 device_printf(sc->amr_dev, "bad slot %d completed\n", idx); 1358 } 1359 } 1360 } else { 1361 break; /* no work */ 1362 } 1363 } 1364 1365 /* if we've completed any commands, try posting some more */ 1366 if (result) 1367 amr_startio(sc); 1368 1369 /* handle completion and timeouts */ 1370 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 1371 if (sc->amr_state & AMR_STATE_INTEN) 1372 taskqueue_enqueue(taskqueue_swi, &sc->amr_task_complete); 1373 else 1374 #endif 1375 amr_complete(sc, 0); 1376 1377 return(result); 1378 } 1379 1380 /******************************************************************************** 1381 * Do completion processing on done commands on (sc) 1382 */ 1383 static void 1384 amr_complete(void *context, int pending) 1385 { 1386 struct amr_softc *sc = (struct amr_softc *)context; 1387 struct amr_command *ac; 1388 1389 debug_called(3); 1390 1391 /* pull completed commands off the queue */ 1392 for (;;) { 1393 ac = amr_dequeue_completed(sc); 1394 if (ac == NULL) 1395 break; 1396 1397 /* unmap the command's data buffer */ 1398 amr_unmapcmd(ac); 1399 1400 /* unbusy the command */ 1401 ac->ac_flags &= ~AMR_CMD_BUSY; 1402 1403 /* 1404 * Is there a completion handler? 1405 */ 1406 if (ac->ac_complete != NULL) { 1407 ac->ac_complete(ac); 1408 1409 /* 1410 * Is someone sleeping on this one? 1411 */ 1412 } else if (ac->ac_flags & AMR_CMD_SLEEP) { 1413 wakeup(ac); 1414 } 1415 1416 if(!sc->amr_busyslots) { 1417 wakeup(sc); 1418 } 1419 } 1420 } 1421 1422 /******************************************************************************** 1423 ******************************************************************************** 1424 Command Buffer Management 1425 ******************************************************************************** 1426 ********************************************************************************/ 1427 1428 /******************************************************************************** 1429 * Get a new command buffer. 1430 * 1431 * This may return NULL in low-memory cases. 1432 * 1433 * If possible, we recycle a command buffer that's been used before. 1434 */ 1435 struct amr_command * 1436 amr_alloccmd(struct amr_softc *sc) 1437 { 1438 struct amr_command *ac; 1439 1440 debug_called(3); 1441 1442 ac = amr_dequeue_free(sc); 1443 if (ac == NULL) { 1444 amr_alloccmd_cluster(sc); 1445 ac = amr_dequeue_free(sc); 1446 } 1447 if (ac == NULL) 1448 return(NULL); 1449 1450 /* clear out significant fields */ 1451 ac->ac_slot = 0; 1452 ac->ac_status = 0; 1453 bzero(&ac->ac_mailbox, sizeof(struct amr_mailbox)); 1454 ac->ac_flags = 0; 1455 ac->ac_bio = NULL; 1456 ac->ac_data = NULL; 1457 ac->ac_ccb_data = NULL; 1458 ac->ac_complete = NULL; 1459 return(ac); 1460 } 1461 1462 /******************************************************************************** 1463 * Release a command buffer for recycling. 1464 */ 1465 void 1466 amr_releasecmd(struct amr_command *ac) 1467 { 1468 debug_called(3); 1469 1470 amr_enqueue_free(ac); 1471 } 1472 1473 /******************************************************************************** 1474 * Allocate a new command cluster and initialise it. 1475 */ 1476 static void 1477 amr_alloccmd_cluster(struct amr_softc *sc) 1478 { 1479 struct amr_command_cluster *acc; 1480 struct amr_command *ac; 1481 int i; 1482 1483 acc = kmalloc(AMR_CMD_CLUSTERSIZE, M_DEVBUF, M_INTWAIT); 1484 crit_enter(); 1485 TAILQ_INSERT_TAIL(&sc->amr_cmd_clusters, acc, acc_link); 1486 crit_exit(); 1487 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) { 1488 ac = &acc->acc_command[i]; 1489 bzero(ac, sizeof(*ac)); 1490 ac->ac_sc = sc; 1491 if (!bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_dmamap) && 1492 !bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_ccb_dmamap)) 1493 amr_releasecmd(ac); 1494 } 1495 } 1496 1497 /******************************************************************************** 1498 * Free a command cluster 1499 */ 1500 static void 1501 amr_freecmd_cluster(struct amr_command_cluster *acc) 1502 { 1503 struct amr_softc *sc = acc->acc_command[0].ac_sc; 1504 int i; 1505 1506 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) 1507 bus_dmamap_destroy(sc->amr_buffer_dmat, acc->acc_command[i].ac_dmamap); 1508 kfree(acc, M_DEVBUF); 1509 } 1510 1511 /******************************************************************************** 1512 ******************************************************************************** 1513 Interface-specific Shims 1514 ******************************************************************************** 1515 ********************************************************************************/ 1516 1517 /******************************************************************************** 1518 * Tell the controller that the mailbox contains a valid command 1519 */ 1520 static int 1521 amr_quartz_submit_command(struct amr_softc *sc) 1522 { 1523 debug_called(3); 1524 1525 if (AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT) 1526 return(EBUSY); 1527 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1528 return(0); 1529 } 1530 1531 static int 1532 amr_std_submit_command(struct amr_softc *sc) 1533 { 1534 debug_called(3); 1535 1536 if (AMR_SGET_MBSTAT(sc) & AMR_SMBOX_BUSYFLAG) 1537 return(EBUSY); 1538 AMR_SPOST_COMMAND(sc); 1539 return(0); 1540 } 1541 1542 /******************************************************************************** 1543 * Claim any work that the controller has completed; acknowledge completion, 1544 * save details of the completion in (mbsave) 1545 */ 1546 static int 1547 amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1548 { 1549 int worked; 1550 u_int32_t outd; 1551 1552 debug_called(3); 1553 1554 worked = 0; 1555 crit_enter(); 1556 1557 /* work waiting for us? */ 1558 if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) { 1559 1560 /* save mailbox, which contains a list of completed commands */ 1561 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1562 1563 /* acknowledge interrupt */ 1564 AMR_QPUT_ODB(sc, AMR_QODB_READY); 1565 1566 /* acknowledge that we have the commands */ 1567 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1568 1569 #ifndef AMR_QUARTZ_GOFASTER 1570 /* 1571 * This waits for the controller to notice that we've taken the 1572 * command from it. It's very inefficient, and we shouldn't do it, 1573 * but if we remove this code, we stop completing commands under 1574 * load. 1575 * 1576 * Peter J says we shouldn't do this. The documentation says we 1577 * should. Who is right? 1578 */ 1579 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK) 1580 ; /* XXX aiee! what if it dies? */ 1581 #endif 1582 1583 worked = 1; /* got some work */ 1584 } 1585 1586 crit_exit(); 1587 return(worked); 1588 } 1589 1590 static int 1591 amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1592 { 1593 int worked; 1594 u_int8_t istat; 1595 1596 debug_called(3); 1597 1598 worked = 0; 1599 crit_enter(); 1600 1601 /* check for valid interrupt status */ 1602 istat = AMR_SGET_ISTAT(sc); 1603 if ((istat & AMR_SINTR_VALID) != 0) { 1604 AMR_SPUT_ISTAT(sc, istat); /* ack interrupt status */ 1605 1606 /* save mailbox, which contains a list of completed commands */ 1607 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1608 1609 AMR_SACK_INTERRUPT(sc); /* acknowledge we have the mailbox */ 1610 worked = 1; 1611 } 1612 1613 crit_exit(); 1614 return(worked); 1615 } 1616 1617 /******************************************************************************** 1618 * Notify the controller of the mailbox location. 1619 */ 1620 static void 1621 amr_std_attach_mailbox(struct amr_softc *sc) 1622 { 1623 1624 /* program the mailbox physical address */ 1625 AMR_SBYTE_SET(sc, AMR_SMBOX_0, sc->amr_mailboxphys & 0xff); 1626 AMR_SBYTE_SET(sc, AMR_SMBOX_1, (sc->amr_mailboxphys >> 8) & 0xff); 1627 AMR_SBYTE_SET(sc, AMR_SMBOX_2, (sc->amr_mailboxphys >> 16) & 0xff); 1628 AMR_SBYTE_SET(sc, AMR_SMBOX_3, (sc->amr_mailboxphys >> 24) & 0xff); 1629 AMR_SBYTE_SET(sc, AMR_SMBOX_ENABLE, AMR_SMBOX_ADDR); 1630 1631 /* clear any outstanding interrupt and enable interrupts proper */ 1632 AMR_SACK_INTERRUPT(sc); 1633 AMR_SENABLE_INTR(sc); 1634 } 1635 1636 #ifdef AMR_BOARD_INIT 1637 /******************************************************************************** 1638 * Initialise the controller 1639 */ 1640 static int 1641 amr_quartz_init(struct amr_softc *sc) 1642 { 1643 int status, ostatus; 1644 1645 device_printf(sc->amr_dev, "initial init status %x\n", AMR_QGET_INITSTATUS(sc)); 1646 1647 AMR_QRESET(sc); 1648 1649 ostatus = 0xff; 1650 while ((status = AMR_QGET_INITSTATUS(sc)) != AMR_QINIT_DONE) { 1651 if (status != ostatus) { 1652 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_qinit, status)); 1653 ostatus = status; 1654 } 1655 switch (status) { 1656 case AMR_QINIT_NOMEM: 1657 return(ENOMEM); 1658 1659 case AMR_QINIT_SCAN: 1660 /* XXX we could print channel/target here */ 1661 break; 1662 } 1663 } 1664 return(0); 1665 } 1666 1667 static int 1668 amr_std_init(struct amr_softc *sc) 1669 { 1670 int status, ostatus; 1671 1672 device_printf(sc->amr_dev, "initial init status %x\n", AMR_SGET_INITSTATUS(sc)); 1673 1674 AMR_SRESET(sc); 1675 1676 ostatus = 0xff; 1677 while ((status = AMR_SGET_INITSTATUS(sc)) != AMR_SINIT_DONE) { 1678 if (status != ostatus) { 1679 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_sinit, status)); 1680 ostatus = status; 1681 } 1682 switch (status) { 1683 case AMR_SINIT_NOMEM: 1684 return(ENOMEM); 1685 1686 case AMR_SINIT_INPROG: 1687 /* XXX we could print channel/target here? */ 1688 break; 1689 } 1690 } 1691 return(0); 1692 } 1693 #endif 1694 1695 /******************************************************************************** 1696 ******************************************************************************** 1697 Debugging 1698 ******************************************************************************** 1699 ********************************************************************************/ 1700 1701 /******************************************************************************** 1702 * Identify the controller and print some information about it. 1703 */ 1704 static void 1705 amr_describe_controller(struct amr_softc *sc) 1706 { 1707 struct amr_prodinfo *ap; 1708 struct amr_enquiry *ae; 1709 char *prod; 1710 1711 /* 1712 * Try to get 40LD product info, which tells us what the card is labelled as. 1713 */ 1714 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) != NULL) { 1715 device_printf(sc->amr_dev, "<LSILogic %.80s> Firmware %.16s, BIOS %.16s, %dMB RAM\n", 1716 ap->ap_product, ap->ap_firmware, ap->ap_bios, 1717 ap->ap_memsize); 1718 1719 kfree(ap, M_DEVBUF); 1720 return; 1721 } 1722 1723 /* 1724 * Try 8LD extended ENQUIRY to get controller signature, and use lookup table. 1725 */ 1726 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) != NULL) { 1727 prod = amr_describe_code(amr_table_adaptertype, ae->ae_signature); 1728 1729 } else if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) != NULL) { 1730 1731 /* 1732 * Try to work it out based on the PCI signatures. 1733 */ 1734 switch (pci_get_device(sc->amr_dev)) { 1735 case 0x9010: 1736 prod = "Series 428"; 1737 break; 1738 case 0x9060: 1739 prod = "Series 434"; 1740 break; 1741 default: 1742 prod = "unknown controller"; 1743 break; 1744 } 1745 } else { 1746 prod = "unsupported controller"; 1747 } 1748 1749 /* 1750 * HP NetRaid controllers have a special encoding of the firmware and 1751 * BIOS versions. The AMI version seems to have it as strings whereas 1752 * the HP version does it with a leading uppercase character and two 1753 * binary numbers. 1754 */ 1755 1756 if(ae->ae_adapter.aa_firmware[2] >= 'A' && 1757 ae->ae_adapter.aa_firmware[2] <= 'Z' && 1758 ae->ae_adapter.aa_firmware[1] < ' ' && 1759 ae->ae_adapter.aa_firmware[0] < ' ' && 1760 ae->ae_adapter.aa_bios[2] >= 'A' && 1761 ae->ae_adapter.aa_bios[2] <= 'Z' && 1762 ae->ae_adapter.aa_bios[1] < ' ' && 1763 ae->ae_adapter.aa_bios[0] < ' ') { 1764 1765 /* this looks like we have an HP NetRaid version of the MegaRaid */ 1766 1767 if(ae->ae_signature == AMR_SIG_438) { 1768 /* the AMI 438 is a NetRaid 3si in HP-land */ 1769 prod = "HP NetRaid 3si"; 1770 } 1771 1772 device_printf(sc->amr_dev, "<%s> Firmware %c.%02d.%02d, BIOS %c.%02d.%02d, %dMB RAM\n", 1773 prod, ae->ae_adapter.aa_firmware[2], 1774 ae->ae_adapter.aa_firmware[1], 1775 ae->ae_adapter.aa_firmware[0], 1776 ae->ae_adapter.aa_bios[2], 1777 ae->ae_adapter.aa_bios[1], 1778 ae->ae_adapter.aa_bios[0], 1779 ae->ae_adapter.aa_memorysize); 1780 } else { 1781 device_printf(sc->amr_dev, "<%s> Firmware %.4s, BIOS %.4s, %dMB RAM\n", 1782 prod, ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios, 1783 ae->ae_adapter.aa_memorysize); 1784 } 1785 kfree(ae, M_DEVBUF); 1786 } 1787 1788 int 1789 amr_dump_blocks(struct amr_softc *sc, int unit, u_int32_t lba, void *data, int blks) 1790 { 1791 1792 struct amr_command *ac; 1793 int error = 1; 1794 1795 debug_called(1); 1796 1797 sc->amr_state &= ~AMR_STATE_INTEN; 1798 1799 /* get ourselves a command buffer */ 1800 if ((ac = amr_alloccmd(sc)) == NULL) 1801 goto out; 1802 /* set command flags */ 1803 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 1804 1805 /* point the command at our data */ 1806 ac->ac_data = data; 1807 ac->ac_length = blks * AMR_BLKSIZE; 1808 1809 /* build the command proper */ 1810 ac->ac_mailbox.mb_command = AMR_CMD_LWRITE; 1811 ac->ac_mailbox.mb_blkcount = blks; 1812 ac->ac_mailbox.mb_lba = lba; 1813 ac->ac_mailbox.mb_drive = unit; 1814 1815 /* can't assume that interrupts are going to work here, so play it safe */ 1816 if (sc->amr_poll_command(ac)) 1817 goto out; 1818 error = ac->ac_status; 1819 1820 out: 1821 if (ac != NULL) 1822 amr_releasecmd(ac); 1823 1824 sc->amr_state |= AMR_STATE_INTEN; 1825 1826 return (error); 1827 } 1828 1829 1830 #ifdef AMR_DEBUG 1831 /******************************************************************************** 1832 * Print the command (ac) in human-readable format 1833 */ 1834 #if 0 1835 static void 1836 amr_printcommand(struct amr_command *ac) 1837 { 1838 struct amr_softc *sc = ac->ac_sc; 1839 struct amr_sgentry *sg; 1840 int i; 1841 1842 device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n", 1843 ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive); 1844 device_printf(sc->amr_dev, "blkcount %d lba %d\n", 1845 ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba); 1846 device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length); 1847 device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n", 1848 ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem); 1849 device_printf(sc->amr_dev, "ccb %p bio %p\n", ac->ac_ccb_data, ac->ac_bio); 1850 1851 /* get base address of s/g table */ 1852 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1853 for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++) 1854 device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count); 1855 } 1856 #endif 1857 #endif 1858