1 /* $OpenBSD: gdt_common.c,v 1.14 2001/08/12 20:12:12 mickey Exp $ */ 2 3 /* 4 * Copyright (c) 1999, 2000 Niklas Hallqvist. 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 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Niklas Hallqvist. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * This driver would not have written if it was not for the hardware donations 34 * from both ICP-Vortex and �ko.neT. I want to thank them for their support. 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/buf.h> 40 #include <sys/device.h> 41 #include <sys/kernel.h> 42 #include <sys/malloc.h> 43 44 #include <machine/bus.h> 45 46 #include <vm/vm.h> 47 48 #include <scsi/scsi_all.h> 49 #include <scsi/scsi_disk.h> 50 #include <scsi/scsiconf.h> 51 52 #include <dev/ic/gdtreg.h> 53 #include <dev/ic/gdtvar.h> 54 55 #ifdef GDT_DEBUG 56 int gdt_maxcmds = GDT_MAXCMDS; 57 #undef GDT_MAXCMDS 58 #define GDT_MAXCMDS gdt_maxcmds 59 #endif 60 61 int gdt_async_event __P((struct gdt_softc *, int)); 62 void gdt_chain __P((struct gdt_softc *)); 63 void gdt_clear_events __P((struct gdt_softc *)); 64 void gdt_copy_internal_data __P((struct scsi_xfer *, u_int8_t *, size_t)); 65 struct scsi_xfer *gdt_dequeue __P((struct gdt_softc *)); 66 void gdt_enqueue __P((struct gdt_softc *, struct scsi_xfer *, int)); 67 void gdt_enqueue_ccb __P((struct gdt_softc *, struct gdt_ccb *)); 68 void gdt_eval_mapping __P((u_int32_t, int *, int *, int *)); 69 int gdt_exec_ccb __P((struct gdt_ccb *)); 70 void gdt_free_ccb __P((struct gdt_softc *, struct gdt_ccb *)); 71 struct gdt_ccb *gdt_get_ccb __P((struct gdt_softc *, int)); 72 int gdt_internal_cache_cmd __P((struct scsi_xfer *)); 73 int gdt_internal_cmd __P((struct gdt_softc *, u_int8_t, u_int16_t, 74 u_int32_t, u_int32_t, u_int32_t)); 75 int gdt_raw_scsi_cmd __P((struct scsi_xfer *)); 76 int gdt_scsi_cmd __P((struct scsi_xfer *)); 77 void gdt_start_ccbs __P((struct gdt_softc *)); 78 int gdt_sync_event __P((struct gdt_softc *, int, u_int8_t, 79 struct scsi_xfer *)); 80 void gdt_timeout __P((void *)); 81 int gdt_wait __P((struct gdt_softc *, struct gdt_ccb *, int)); 82 void gdt_watchdog __P((void *)); 83 84 struct cfdriver gdt_cd = { 85 NULL, "gdt", DV_DULL 86 }; 87 88 struct scsi_adapter gdt_switch = { 89 gdt_scsi_cmd, gdtminphys, 0, 0, 90 }; 91 92 struct scsi_adapter gdt_raw_switch = { 93 gdt_raw_scsi_cmd, gdtminphys, 0, 0, 94 }; 95 96 struct scsi_device gdt_dev = { 97 NULL, NULL, NULL, NULL 98 }; 99 100 u_int8_t gdt_polling; 101 u_int8_t gdt_from_wait; 102 struct gdt_softc *gdt_wait_gdt; 103 int gdt_wait_index; 104 #ifdef GDT_DEBUG 105 int gdt_debug = GDT_DEBUG; 106 #endif 107 108 int 109 gdt_attach(gdt) 110 struct gdt_softc *gdt; 111 { 112 u_int16_t cdev_cnt; 113 int i, id, drv_cyls, drv_hds, drv_secs, error; 114 115 gdt_polling = 1; 116 gdt_from_wait = 0; 117 gdt_clear_events(gdt); 118 119 TAILQ_INIT(&gdt->sc_free_ccb); 120 TAILQ_INIT(&gdt->sc_ccbq); 121 LIST_INIT(&gdt->sc_queue); 122 123 /* Initialize the ccbs */ 124 for (i = 0; i < GDT_MAXCMDS; i++) { 125 gdt->sc_ccbs[i].gc_cmd_index = i + 2; 126 error = bus_dmamap_create(gdt->sc_dmat, 127 (GDT_MAXOFFSETS - 1) << PGSHIFT, GDT_MAXOFFSETS, 128 (GDT_MAXOFFSETS - 1) << PGSHIFT, 0, 129 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 130 &gdt->sc_ccbs[i].gc_dmamap_xfer); 131 if (error) { 132 printf("%s: cannot create ccb dmamap (%d)", 133 gdt->sc_dev.dv_xname, error); 134 return (1); 135 } 136 (void)gdt_ccb_set_cmd(gdt->sc_ccbs + i, GDT_GCF_UNUSED); 137 TAILQ_INSERT_TAIL(&gdt->sc_free_ccb, &gdt->sc_ccbs[i], 138 gc_chain); 139 } 140 141 /* Fill in the prototype scsi_link. */ 142 gdt->sc_link.adapter_softc = gdt; 143 gdt->sc_link.adapter = &gdt_switch; 144 gdt->sc_link.device = &gdt_dev; 145 /* XXX what is optimal? */ 146 gdt->sc_link.openings = GDT_MAXCMDS; 147 gdt->sc_link.adapter_buswidth = 148 (gdt->sc_class & GDT_FC) ? GDT_MAXID : GDT_MAX_HDRIVES; 149 gdt->sc_link.adapter_target = gdt->sc_link.adapter_buswidth; 150 151 if (!gdt_internal_cmd(gdt, GDT_SCREENSERVICE, GDT_INIT, 0, 0, 0)) { 152 printf("screen service initialization error %d\n", 153 gdt->sc_status); 154 return (1); 155 } 156 157 if (!gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_INIT, GDT_LINUX_OS, 0, 158 0)) { 159 printf("cache service initialization error %d\n", 160 gdt->sc_status); 161 return (1); 162 } 163 164 if (!gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_MOUNT, 0xffff, 1, 165 0)) { 166 printf("cache service mount error %d\n", 167 gdt->sc_status); 168 return (1); 169 } 170 171 if (!gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_INIT, GDT_LINUX_OS, 0, 172 0)) { 173 printf("cache service post-mount initialization error %d\n", 174 gdt->sc_status); 175 return (1); 176 } 177 cdev_cnt = (u_int16_t)gdt->sc_info; 178 179 /* Detect number of busses */ 180 gdt_enc32(gdt->sc_scratch + GDT_IOC_VERSION, GDT_IOC_NEWEST); 181 gdt->sc_scratch[GDT_IOC_LIST_ENTRIES] = GDT_MAXBUS; 182 gdt->sc_scratch[GDT_IOC_FIRST_CHAN] = 0; 183 gdt->sc_scratch[GDT_IOC_LAST_CHAN] = GDT_MAXBUS - 1; 184 gdt_enc32(gdt->sc_scratch + GDT_IOC_LIST_OFFSET, GDT_IOC_HDR_SZ); 185 if (gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_IOCTL, 186 GDT_IOCHAN_RAW_DESC, GDT_INVALID_CHANNEL, 187 GDT_IOC_HDR_SZ + GDT_RAWIOC_SZ)) { 188 gdt->sc_bus_cnt = gdt->sc_scratch[GDT_IOC_CHAN_COUNT]; 189 for (i = 0; i < gdt->sc_bus_cnt; i++) { 190 id = gdt->sc_scratch[GDT_IOC_HDR_SZ + 191 i * GDT_RAWIOC_SZ + GDT_RAWIOC_PROC_ID]; 192 gdt->sc_bus_id[id] = id < GDT_MAXID ? id : 0xff; 193 } 194 195 } else { 196 /* New method failed, use fallback. */ 197 gdt_enc32(gdt->sc_scratch + GDT_GETCH_CHANNEL_NO, i); 198 for (i = 0; i < GDT_MAXBUS; i++) { 199 if (!gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_IOCTL, 200 GDT_SCSI_CHAN_CNT | GDT_L_CTRL_PATTERN, 201 GDT_IO_CHANNEL | GDT_INVALID_CHANNEL, 202 GDT_GETCH_SZ)) { 203 if (i == 0) { 204 printf("cannot get channel count, " 205 "error %d\n", gdt->sc_status); 206 return (1); 207 } 208 break; 209 } 210 gdt->sc_bus_id[i] = 211 (gdt->sc_scratch[GDT_GETCH_SIOP_ID] < GDT_MAXID) ? 212 gdt->sc_scratch[GDT_GETCH_SIOP_ID] : 0xff; 213 } 214 gdt->sc_bus_cnt = i; 215 } 216 217 /* Read cache configuration */ 218 if (!gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_IOCTL, GDT_CACHE_INFO, 219 GDT_INVALID_CHANNEL, GDT_CINFO_SZ)) { 220 printf("cannot get cache info, error %d\n", gdt->sc_status); 221 return (1); 222 } 223 gdt->sc_cpar.cp_version = 224 gdt_dec32(gdt->sc_scratch + GDT_CPAR_VERSION); 225 gdt->sc_cpar.cp_state = gdt_dec16(gdt->sc_scratch + GDT_CPAR_STATE); 226 gdt->sc_cpar.cp_strategy = 227 gdt_dec16(gdt->sc_scratch + GDT_CPAR_STRATEGY); 228 gdt->sc_cpar.cp_write_back = 229 gdt_dec16(gdt->sc_scratch + GDT_CPAR_WRITE_BACK); 230 gdt->sc_cpar.cp_block_size = 231 gdt_dec16(gdt->sc_scratch + GDT_CPAR_BLOCK_SIZE); 232 233 /* Read board information and features */ 234 gdt->sc_more_proc = 0; 235 if (gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_IOCTL, GDT_BOARD_INFO, 236 GDT_INVALID_CHANNEL, GDT_BINFO_SZ)) { 237 /* XXX A lot of these assignments can probably go later */ 238 gdt->sc_binfo.bi_ser_no = 239 gdt_dec32(gdt->sc_scratch + GDT_BINFO_SER_NO); 240 bcopy(gdt->sc_scratch + GDT_BINFO_OEM_ID, 241 gdt->sc_binfo.bi_oem_id, sizeof gdt->sc_binfo.bi_oem_id); 242 gdt->sc_binfo.bi_ep_flags = 243 gdt_dec16(gdt->sc_scratch + GDT_BINFO_EP_FLAGS); 244 gdt->sc_binfo.bi_proc_id = 245 gdt_dec32(gdt->sc_scratch + GDT_BINFO_PROC_ID); 246 gdt->sc_binfo.bi_memsize = 247 gdt_dec32(gdt->sc_scratch + GDT_BINFO_MEMSIZE); 248 gdt->sc_binfo.bi_mem_banks = 249 gdt->sc_scratch[GDT_BINFO_MEM_BANKS]; 250 gdt->sc_binfo.bi_chan_type = 251 gdt->sc_scratch[GDT_BINFO_CHAN_TYPE]; 252 gdt->sc_binfo.bi_chan_count = 253 gdt->sc_scratch[GDT_BINFO_CHAN_COUNT]; 254 gdt->sc_binfo.bi_rdongle_pres = 255 gdt->sc_scratch[GDT_BINFO_RDONGLE_PRES]; 256 gdt->sc_binfo.bi_epr_fw_ver = 257 gdt_dec32(gdt->sc_scratch + GDT_BINFO_EPR_FW_VER); 258 gdt->sc_binfo.bi_upd_fw_ver = 259 gdt_dec32(gdt->sc_scratch + GDT_BINFO_UPD_FW_VER); 260 gdt->sc_binfo.bi_upd_revision = 261 gdt_dec32(gdt->sc_scratch + GDT_BINFO_UPD_REVISION); 262 bcopy(gdt->sc_scratch + GDT_BINFO_TYPE_STRING, 263 gdt->sc_binfo.bi_type_string, 264 sizeof gdt->sc_binfo.bi_type_string); 265 bcopy(gdt->sc_scratch + GDT_BINFO_RAID_STRING, 266 gdt->sc_binfo.bi_raid_string, 267 sizeof gdt->sc_binfo.bi_raid_string); 268 gdt->sc_binfo.bi_update_pres = 269 gdt->sc_scratch[GDT_BINFO_UPDATE_PRES]; 270 gdt->sc_binfo.bi_xor_pres = 271 gdt->sc_scratch[GDT_BINFO_XOR_PRES]; 272 gdt->sc_binfo.bi_prom_type = 273 gdt->sc_scratch[GDT_BINFO_PROM_TYPE]; 274 gdt->sc_binfo.bi_prom_count = 275 gdt->sc_scratch[GDT_BINFO_PROM_COUNT]; 276 gdt->sc_binfo.bi_dup_pres = 277 gdt_dec32(gdt->sc_scratch + GDT_BINFO_DUP_PRES); 278 gdt->sc_binfo.bi_chan_pres = 279 gdt_dec32(gdt->sc_scratch + GDT_BINFO_CHAN_PRES); 280 gdt->sc_binfo.bi_mem_pres = 281 gdt_dec32(gdt->sc_scratch + GDT_BINFO_MEM_PRES); 282 gdt->sc_binfo.bi_ft_bus_system = 283 gdt->sc_scratch[GDT_BINFO_FT_BUS_SYSTEM]; 284 gdt->sc_binfo.bi_subtype_valid = 285 gdt->sc_scratch[GDT_BINFO_SUBTYPE_VALID]; 286 gdt->sc_binfo.bi_board_subtype = 287 gdt->sc_scratch[GDT_BINFO_BOARD_SUBTYPE]; 288 gdt->sc_binfo.bi_rampar_pres = 289 gdt->sc_scratch[GDT_BINFO_RAMPAR_PRES]; 290 291 if (gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_IOCTL, 292 GDT_BOARD_FEATURES, GDT_INVALID_CHANNEL, GDT_BFEAT_SZ)) { 293 gdt->sc_bfeat.bf_chaining = 294 gdt->sc_scratch[GDT_BFEAT_CHAINING]; 295 gdt->sc_bfeat.bf_striping = 296 gdt->sc_scratch[GDT_BFEAT_STRIPING]; 297 gdt->sc_bfeat.bf_mirroring = 298 gdt->sc_scratch[GDT_BFEAT_MIRRORING]; 299 gdt->sc_bfeat.bf_raid = 300 gdt->sc_scratch[GDT_BFEAT_RAID]; 301 gdt->sc_more_proc = 1; 302 } 303 } else { 304 /* XXX Not implemented yet */ 305 } 306 307 /* Read more information */ 308 if (gdt->sc_more_proc) { 309 /* XXX Not implemented yet */ 310 } 311 312 if (!gdt_internal_cmd(gdt, GDT_SCSIRAWSERVICE, GDT_INIT, 0, 0, 0)) { 313 printf("raw service initialization error %d\n", 314 gdt->sc_status); 315 return (1); 316 } 317 318 /* Set/get features raw service (scatter/gather) */ 319 gdt->sc_raw_feat = 0; 320 if (gdt_internal_cmd(gdt, GDT_SCSIRAWSERVICE, GDT_SET_FEAT, 321 GDT_SCATTER_GATHER, 0, 0)) 322 if (gdt_internal_cmd(gdt, GDT_SCSIRAWSERVICE, GDT_GET_FEAT, 0, 323 0, 0)) 324 gdt->sc_raw_feat = gdt->sc_info; 325 326 /* Set/get features cache service (scatter/gather) */ 327 gdt->sc_cache_feat = 0; 328 if (gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_SET_FEAT, 0, 329 GDT_SCATTER_GATHER, 0)) 330 if (gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_GET_FEAT, 0, 0, 331 0)) 332 gdt->sc_cache_feat = gdt->sc_info; 333 334 /* XXX Linux reserve drives here, potentially */ 335 336 /* Scan for cache devices */ 337 for (i = 0; i < cdev_cnt && i < GDT_MAX_HDRIVES; i++) 338 if (gdt_internal_cmd(gdt, GDT_CACHESERVICE, GDT_INFO, i, 0, 339 0)) { 340 gdt->sc_hdr[i].hd_present = 1; 341 gdt->sc_hdr[i].hd_size = gdt->sc_info; 342 343 /* 344 * Evaluate mapping (sectors per head, heads per cyl) 345 */ 346 gdt->sc_hdr[i].hd_size &= ~GDT_SECS32; 347 if (gdt->sc_info2 == 0) 348 gdt_eval_mapping(gdt->sc_hdr[i].hd_size, 349 &drv_cyls, &drv_hds, &drv_secs); 350 else { 351 drv_hds = gdt->sc_info2 & 0xff; 352 drv_secs = (gdt->sc_info2 >> 8) & 0xff; 353 drv_cyls = gdt->sc_hdr[i].hd_size / drv_hds / 354 drv_secs; 355 } 356 gdt->sc_hdr[i].hd_heads = drv_hds; 357 gdt->sc_hdr[i].hd_secs = drv_secs; 358 /* Round the size */ 359 gdt->sc_hdr[i].hd_size = drv_cyls * drv_hds * drv_secs; 360 361 if (gdt_internal_cmd(gdt, GDT_CACHESERVICE, 362 GDT_DEVTYPE, i, 0, 0)) 363 gdt->sc_hdr[i].hd_devtype = gdt->sc_info; 364 } 365 366 printf("dpmem %x %d-bus %d cache device%s\n", gdt->sc_dpmembase, 367 gdt->sc_bus_cnt, cdev_cnt, cdev_cnt == 1 ? "" : "s"); 368 printf("%s: ver %x, cache %s, strategy %d, writeback %s, blksz %d\n", 369 gdt->sc_dev.dv_xname, gdt->sc_cpar.cp_version, 370 gdt->sc_cpar.cp_state ? "on" : "off", gdt->sc_cpar.cp_strategy, 371 gdt->sc_cpar.cp_write_back ? "on" : "off", 372 gdt->sc_cpar.cp_block_size); 373 #if 1 374 printf("%s: raw feat %x cache feat %x\n", gdt->sc_dev.dv_xname, 375 gdt->sc_raw_feat, gdt->sc_cache_feat); 376 #endif 377 378 config_found(&gdt->sc_dev, &gdt->sc_link, scsiprint); 379 380 gdt->sc_raw_link = malloc(gdt->sc_bus_cnt * sizeof (struct scsi_link), 381 M_DEVBUF, M_NOWAIT); 382 bzero(gdt->sc_raw_link, gdt->sc_bus_cnt * sizeof (struct scsi_link)); 383 384 for (i = 0; i < gdt->sc_bus_cnt; i++) { 385 /* Fill in the prototype scsi_link. */ 386 gdt->sc_raw_link[i].adapter_softc = gdt; 387 gdt->sc_raw_link[i].adapter = &gdt_raw_switch; 388 gdt->sc_raw_link[i].adapter_target = 7; 389 gdt->sc_raw_link[i].device = &gdt_dev; 390 gdt->sc_raw_link[i].openings = 4; /* XXX a guess */ 391 gdt->sc_raw_link[i].adapter_buswidth = 392 (gdt->sc_class & GDT_FC) ? GDT_MAXID : 16; /* XXX */ 393 394 config_found(&gdt->sc_dev, &gdt->sc_raw_link[i], scsiprint); 395 } 396 397 gdt_polling = 0; 398 return (0); 399 } 400 401 void 402 gdt_eval_mapping(size, cyls, heads, secs) 403 u_int32_t size; 404 int *cyls, *heads, *secs; 405 { 406 *cyls = size / GDT_HEADS / GDT_SECS; 407 if (*cyls < GDT_MAXCYLS) { 408 *heads = GDT_HEADS; 409 *secs = GDT_SECS; 410 } else { 411 /* Too high for 64 * 32 */ 412 *cyls = size / GDT_MEDHEADS / GDT_MEDSECS; 413 if (*cyls < GDT_MAXCYLS) { 414 *heads = GDT_MEDHEADS; 415 *secs = GDT_MEDSECS; 416 } else { 417 /* Too high for 127 * 63 */ 418 *cyls = size / GDT_BIGHEADS / GDT_BIGSECS; 419 *heads = GDT_BIGHEADS; 420 *secs = GDT_BIGSECS; 421 } 422 } 423 } 424 425 /* 426 * Insert a command into the driver queue, either at the front or at the tail. 427 * It's ok to overload the freelist link as these structures are never on 428 * the freelist at this time. 429 */ 430 void 431 gdt_enqueue(gdt, xs, infront) 432 struct gdt_softc *gdt; 433 struct scsi_xfer *xs; 434 int infront; 435 { 436 if (infront || LIST_FIRST(&gdt->sc_queue) == NULL) { 437 if (LIST_FIRST(&gdt->sc_queue) == NULL) 438 gdt->sc_queuelast = xs; 439 LIST_INSERT_HEAD(&gdt->sc_queue, xs, free_list); 440 return; 441 } 442 LIST_INSERT_AFTER(gdt->sc_queuelast, xs, free_list); 443 gdt->sc_queuelast = xs; 444 } 445 446 /* 447 * Pull a command off the front of the driver queue. 448 */ 449 struct scsi_xfer * 450 gdt_dequeue(gdt) 451 struct gdt_softc *gdt; 452 { 453 struct scsi_xfer *xs; 454 455 xs = LIST_FIRST(&gdt->sc_queue); 456 if (xs == NULL) 457 return (NULL); 458 LIST_REMOVE(xs, free_list); 459 460 if (LIST_FIRST(&gdt->sc_queue) == NULL) 461 gdt->sc_queuelast = NULL; 462 463 return (xs); 464 } 465 466 /* 467 * Start a SCSI operation on a cache device. 468 * XXX Polled operation is not yet complete. What kind of locking do we need? 469 */ 470 int 471 gdt_scsi_cmd(xs) 472 struct scsi_xfer *xs; 473 { 474 struct scsi_link *link = xs->sc_link; 475 struct gdt_softc *gdt = link->adapter_softc; 476 u_int8_t target = link->target; 477 struct gdt_ccb *ccb; 478 u_int32_t blockno, blockcnt; 479 struct scsi_rw *rw; 480 struct scsi_rw_big *rwb; 481 bus_dmamap_t xfer; 482 int error, retval = SUCCESSFULLY_QUEUED; 483 gdt_lock_t lock; 484 485 GDT_DPRINTF(GDT_D_CMD, ("gdt_scsi_cmd ")); 486 487 xs->error = XS_NOERROR; 488 489 if (target >= GDT_MAX_HDRIVES || !gdt->sc_hdr[target].hd_present || 490 link->lun != 0) { 491 /* 492 * XXX Should be XS_SENSE but that would require setting up a 493 * faked sense too. 494 */ 495 xs->error = XS_DRIVER_STUFFUP; 496 xs->flags |= ITSDONE; 497 scsi_done(xs); 498 return (COMPLETE); 499 } 500 501 lock = GDT_LOCK_GDT(lock); 502 503 /* Don't double enqueue if we came from gdt_chain. */ 504 if (xs != LIST_FIRST(&gdt->sc_queue)) 505 gdt_enqueue(gdt, xs, 0); 506 507 while ((xs = gdt_dequeue(gdt))) { 508 xs->error = XS_NOERROR; 509 ccb = NULL; 510 link = xs->sc_link; 511 target = link->target; 512 513 if (!gdt_polling && !(xs->flags & SCSI_POLL) && 514 gdt->sc_test_busy(gdt)) { 515 /* 516 * Put it back in front. XXX Should we instead 517 * set xs->error to XS_BUSY? 518 */ 519 gdt_enqueue(gdt, xs, 1); 520 break; 521 } 522 523 switch (xs->cmd->opcode) { 524 case TEST_UNIT_READY: 525 case REQUEST_SENSE: 526 case INQUIRY: 527 case MODE_SENSE: 528 case START_STOP: 529 case READ_CAPACITY: 530 #if 0 531 case VERIFY: 532 #endif 533 if (!gdt_internal_cache_cmd(xs)) { 534 GDT_UNLOCK_GDT(gdt, lock); 535 return (TRY_AGAIN_LATER); 536 } 537 xs->flags |= ITSDONE; 538 scsi_done(xs); 539 goto ready; 540 541 case PREVENT_ALLOW: 542 GDT_DPRINTF(GDT_D_CMD, ("PREVENT/ALLOW ")); 543 /* XXX Not yet implemented */ 544 xs->error = XS_NOERROR; 545 xs->flags |= ITSDONE; 546 scsi_done(xs); 547 goto ready; 548 549 default: 550 GDT_DPRINTF(GDT_D_CMD, 551 ("unknown opc %d ", xs->cmd->opcode)); 552 /* XXX Not yet implemented */ 553 xs->error = XS_DRIVER_STUFFUP; 554 xs->flags |= ITSDONE; 555 scsi_done(xs); 556 goto ready; 557 558 case READ_COMMAND: 559 case READ_BIG: 560 case WRITE_COMMAND: 561 case WRITE_BIG: 562 case SYNCHRONIZE_CACHE: 563 /* 564 * A new command chain, start from the beginning. 565 */ 566 gdt->sc_cmd_off = 0; 567 568 if (xs->cmd->opcode != SYNCHRONIZE_CACHE) { 569 /* A read or write operation. */ 570 if (xs->cmdlen == 6) { 571 rw = (struct scsi_rw *)xs->cmd; 572 blockno = _3btol(rw->addr) & 573 (SRW_TOPADDR << 16 | 0xffff); 574 blockcnt = 575 rw->length ? rw->length : 0x100; 576 } else { 577 rwb = (struct scsi_rw_big *)xs->cmd; 578 blockno = _4btol(rwb->addr); 579 blockcnt = _2btol(rwb->length); 580 } 581 if (blockno >= gdt->sc_hdr[target].hd_size || 582 blockno + blockcnt > 583 gdt->sc_hdr[target].hd_size) { 584 printf( 585 "%s: out of bounds %u-%u >= %u\n", 586 gdt->sc_dev.dv_xname, blockno, 587 blockcnt, 588 gdt->sc_hdr[target].hd_size); 589 /* 590 * XXX Should be XS_SENSE but that 591 * would require setting up a faked 592 * sense too. 593 */ 594 xs->error = XS_DRIVER_STUFFUP; 595 xs->flags |= ITSDONE; 596 scsi_done(xs); 597 goto ready; 598 } 599 } 600 601 ccb = gdt_get_ccb(gdt, xs->flags); 602 /* 603 * Are we out of commands, something is wrong. 604 * 605 */ 606 if (ccb == NULL) { 607 printf("%s: no ccb in gdt_scsi_cmd", 608 gdt->sc_dev.dv_xname); 609 xs->error = XS_DRIVER_STUFFUP; 610 xs->flags |= ITSDONE; 611 scsi_done(xs); 612 goto ready; 613 } 614 615 ccb->gc_blockno = blockno; 616 ccb->gc_blockcnt = blockcnt; 617 ccb->gc_xs = xs; 618 ccb->gc_timeout = xs->timeout; 619 ccb->gc_service = GDT_CACHESERVICE; 620 gdt_ccb_set_cmd(ccb, GDT_GCF_SCSI); 621 622 if (xs->cmd->opcode != SYNCHRONIZE_CACHE) { 623 xfer = ccb->gc_dmamap_xfer; 624 error = bus_dmamap_load(gdt->sc_dmat, xfer, 625 xs->data, xs->datalen, NULL, 626 (xs->flags & SCSI_NOSLEEP) ? 627 BUS_DMA_NOWAIT : BUS_DMA_WAITOK); 628 if (error) { 629 printf("%s: gdt_scsi_cmd: ", 630 gdt->sc_dev.dv_xname); 631 if (error == EFBIG) 632 printf( 633 "more than %d dma segs\n", 634 GDT_MAXOFFSETS); 635 else 636 printf("error %d " 637 "loading dma map\n", 638 error); 639 640 gdt_free_ccb(gdt, ccb); 641 xs->error = XS_DRIVER_STUFFUP; 642 xs->flags |= ITSDONE; 643 scsi_done(xs); 644 goto ready; 645 } 646 bus_dmamap_sync(gdt->sc_dmat, xfer, 647 (xs->flags & SCSI_DATA_IN) ? 648 BUS_DMASYNC_PREREAD : 649 BUS_DMASYNC_PREWRITE); 650 } 651 652 gdt_enqueue_ccb(gdt, ccb); 653 /* XXX what if enqueue did not start a transfer? */ 654 if (gdt_polling || (xs->flags & SCSI_POLL)) { 655 if (!gdt_wait(gdt, ccb, ccb->gc_timeout)) { 656 GDT_UNLOCK_GDT(gdt, lock); 657 printf("%s: command %d timed out\n", 658 gdt->sc_dev.dv_xname, 659 ccb->gc_cmd_index); 660 xs->error = XS_TIMEOUT; 661 return (TRY_AGAIN_LATER); 662 } 663 xs->flags |= ITSDONE; 664 scsi_done(xs); 665 } 666 } 667 668 ready: 669 /* 670 * Don't process the queue if we are polling. 671 */ 672 if (xs->flags & SCSI_POLL) { 673 retval = COMPLETE; 674 break; 675 } 676 } 677 678 GDT_UNLOCK_GDT(gdt, lock); 679 return (retval); 680 } 681 682 /* XXX Currently only for cacheservice, returns 0 if busy */ 683 int 684 gdt_exec_ccb(ccb) 685 struct gdt_ccb *ccb; 686 { 687 struct scsi_xfer *xs = ccb->gc_xs; 688 struct scsi_link *link = xs->sc_link; 689 struct gdt_softc *gdt = link->adapter_softc; 690 u_int8_t target = link->target; 691 u_int32_t sg_canz; 692 bus_dmamap_t xfer; 693 int i; 694 695 GDT_DPRINTF(GDT_D_CMD, ("gdt_exec_ccb(%p, %p) ", xs, ccb)); 696 697 gdt->sc_cmd_cnt = 0; 698 699 /* 700 * XXX Yeah I know it's an always-true condition, but that may change 701 * later. 702 */ 703 if (gdt->sc_cmd_cnt == 0) 704 gdt->sc_set_sema0(gdt); 705 706 gdt_enc32(gdt->sc_cmd + GDT_CMD_COMMANDINDEX, ccb->gc_cmd_index); 707 gdt_enc32(gdt->sc_cmd + GDT_CMD_BOARDNODE, GDT_LOCALBOARD); 708 gdt_enc16(gdt->sc_cmd + GDT_CMD_UNION + GDT_CACHE_DEVICENO, 709 target); 710 711 switch (xs->cmd->opcode) { 712 case PREVENT_ALLOW: 713 case SYNCHRONIZE_CACHE: 714 if (xs->cmd->opcode == PREVENT_ALLOW) { 715 /* XXX PREVENT_ALLOW support goes here */ 716 } else { 717 GDT_DPRINTF(GDT_D_CMD, 718 ("SYNCHRONIZE CACHE tgt %d ", target)); 719 gdt->sc_cmd[GDT_CMD_OPCODE] = GDT_FLUSH; 720 } 721 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + GDT_CACHE_BLOCKNO, 722 1); 723 sg_canz = 0; 724 break; 725 726 case WRITE_COMMAND: 727 case WRITE_BIG: 728 /* XXX WRITE_THR could be supported too */ 729 gdt->sc_cmd[GDT_CMD_OPCODE] = GDT_WRITE; 730 break; 731 732 case READ_COMMAND: 733 case READ_BIG: 734 gdt->sc_cmd[GDT_CMD_OPCODE] = GDT_READ; 735 break; 736 } 737 738 if (xs->cmd->opcode != PREVENT_ALLOW && 739 xs->cmd->opcode != SYNCHRONIZE_CACHE) { 740 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + GDT_CACHE_BLOCKNO, 741 ccb->gc_blockno); 742 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + GDT_CACHE_BLOCKCNT, 743 ccb->gc_blockcnt); 744 745 xfer = ccb->gc_dmamap_xfer; 746 if (gdt->sc_cache_feat & GDT_SCATTER_GATHER) { 747 gdt_enc32( 748 gdt->sc_cmd + GDT_CMD_UNION + GDT_CACHE_DESTADDR, 749 0xffffffff); 750 for (i = 0; i < xfer->dm_nsegs; i++) { 751 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + 752 GDT_CACHE_SG_LST + i * GDT_SG_SZ + 753 GDT_SG_PTR, 754 xfer->dm_segs[i].ds_addr); 755 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + 756 GDT_CACHE_SG_LST + i * GDT_SG_SZ + 757 GDT_SG_LEN, 758 xfer->dm_segs[i].ds_len); 759 GDT_DPRINTF(GDT_D_IO, 760 ("#%d va %p pa %p len %x\n", i, buf, 761 xfer->dm_segs[i].ds_addr, 762 xfer->dm_segs[i].ds_len)); 763 } 764 sg_canz = xfer->dm_nsegs; 765 gdt_enc32( 766 gdt->sc_cmd + GDT_CMD_UNION + GDT_CACHE_SG_LST + 767 sg_canz * GDT_SG_SZ + GDT_SG_LEN, 0); 768 } else { 769 /* XXX Hardly correct */ 770 gdt_enc32( 771 gdt->sc_cmd + GDT_CMD_UNION + GDT_CACHE_DESTADDR, 772 xfer->dm_segs[0].ds_addr); 773 sg_canz = 0; 774 } 775 } 776 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + GDT_CACHE_SG_CANZ, sg_canz); 777 778 gdt->sc_cmd_len = 779 roundup(GDT_CMD_UNION + GDT_CACHE_SG_LST + sg_canz * GDT_SG_SZ, 780 sizeof (u_int32_t)); 781 782 if (gdt->sc_cmd_cnt > 0 && 783 gdt->sc_cmd_off + gdt->sc_cmd_len + GDT_DPMEM_COMMAND_OFFSET > 784 gdt->sc_ic_all_size) { 785 printf("%s: DPMEM overflow\n", gdt->sc_dev.dv_xname); 786 gdt_free_ccb(gdt, ccb); 787 xs->error = XS_BUSY; 788 return (0); 789 } 790 791 gdt->sc_copy_cmd(gdt, ccb); 792 gdt->sc_release_event(gdt, ccb); 793 794 xs->error = XS_NOERROR; 795 xs->resid = 0; 796 return (1); 797 } 798 799 void 800 gdt_copy_internal_data(xs, data, size) 801 struct scsi_xfer *xs; 802 u_int8_t *data; 803 size_t size; 804 { 805 size_t copy_cnt; 806 807 GDT_DPRINTF(GDT_D_MISC, ("gdt_copy_internal_data ")); 808 809 if (!xs->datalen) 810 printf("uio move not yet supported\n"); 811 else { 812 copy_cnt = MIN(size, xs->datalen); 813 bcopy(data, xs->data, copy_cnt); 814 } 815 } 816 817 /* Emulated SCSI operation on cache device */ 818 int 819 gdt_internal_cache_cmd(xs) 820 struct scsi_xfer *xs; 821 { 822 struct scsi_link *link = xs->sc_link; 823 struct gdt_softc *gdt = link->adapter_softc; 824 struct scsi_inquiry_data inq; 825 struct scsi_sense_data sd; 826 struct { 827 struct scsi_mode_header hd; 828 struct scsi_blk_desc bd; 829 union scsi_disk_pages dp; 830 } mpd; 831 struct scsi_read_cap_data rcd; 832 u_int8_t target = link->target; 833 834 GDT_DPRINTF(GDT_D_CMD, ("gdt_internal_cache_cmd ")); 835 836 switch (xs->cmd->opcode) { 837 case TEST_UNIT_READY: 838 case START_STOP: 839 #if 0 840 case VERIFY: 841 #endif 842 GDT_DPRINTF(GDT_D_CMD, ("opc %d tgt %d ", xs->cmd->opcode, 843 target)); 844 break; 845 846 case REQUEST_SENSE: 847 GDT_DPRINTF(GDT_D_CMD, ("REQUEST SENSE tgt %d ", target)); 848 bzero(&sd, sizeof sd); 849 sd.error_code = 0x70; 850 sd.segment = 0; 851 sd.flags = SKEY_NO_SENSE; 852 gdt_enc32(sd.info, 0); 853 sd.extra_len = 0; 854 gdt_copy_internal_data(xs, (u_int8_t *)&sd, sizeof sd); 855 break; 856 857 case INQUIRY: 858 GDT_DPRINTF(GDT_D_CMD, ("INQUIRY tgt %d devtype %x ", target, 859 gdt->sc_hdr[target].hd_devtype)); 860 bzero(&inq, sizeof inq); 861 inq.device = 862 (gdt->sc_hdr[target].hd_devtype & 4) ? T_CDROM : T_DIRECT; 863 inq.dev_qual2 = 864 (gdt->sc_hdr[target].hd_devtype & 1) ? SID_REMOVABLE : 0; 865 inq.version = 2; 866 inq.response_format = 2; 867 inq.additional_length = 32; 868 strcpy(inq.vendor, "ICP "); 869 sprintf(inq.product, "Host drive #%02d", target); 870 strcpy(inq.revision, " "); 871 gdt_copy_internal_data(xs, (u_int8_t *)&inq, sizeof inq); 872 break; 873 874 case MODE_SENSE: 875 GDT_DPRINTF(GDT_D_CMD, ("MODE SENSE tgt %d ", target)); 876 877 bzero(&mpd, sizeof mpd); 878 switch (((struct scsi_mode_sense *)xs->cmd)->page) { 879 case 4: 880 /* scsi_disk.h says this should be 0x16 */ 881 mpd.dp.rigid_geometry.pg_length = 0x16; 882 mpd.hd.data_length = sizeof mpd.hd + sizeof mpd.bd + 883 mpd.dp.rigid_geometry.pg_length; 884 mpd.hd.blk_desc_len = sizeof mpd.bd; 885 886 /* XXX */ 887 mpd.hd.dev_spec = 888 (gdt->sc_hdr[target].hd_devtype & 2) ? 0x80 : 0; 889 _lto3b(GDT_SECTOR_SIZE, mpd.bd.blklen); 890 mpd.dp.rigid_geometry.pg_code = 4; 891 _lto3b(gdt->sc_hdr[target].hd_size / 892 gdt->sc_hdr[target].hd_heads / 893 gdt->sc_hdr[target].hd_secs, 894 mpd.dp.rigid_geometry.ncyl); 895 mpd.dp.rigid_geometry.nheads = 896 gdt->sc_hdr[target].hd_heads; 897 gdt_copy_internal_data(xs, (u_int8_t *)&mpd, 898 sizeof mpd); 899 break; 900 901 default: 902 printf("%s: mode sense page %d not simulated\n", 903 gdt->sc_dev.dv_xname, 904 ((struct scsi_mode_sense *)xs->cmd)->page); 905 xs->error = XS_DRIVER_STUFFUP; 906 return (0); 907 } 908 break; 909 910 case READ_CAPACITY: 911 GDT_DPRINTF(GDT_D_CMD, ("READ CAPACITY tgt %d ", target)); 912 bzero(&rcd, sizeof rcd); 913 _lto4b(gdt->sc_hdr[target].hd_size - 1, rcd.addr); 914 _lto4b(GDT_SECTOR_SIZE, rcd.length); 915 gdt_copy_internal_data(xs, (u_int8_t *)&rcd, sizeof rcd); 916 break; 917 918 default: 919 printf("gdt_internal_cache_cmd got bad opcode: %d\n", 920 xs->cmd->opcode); 921 xs->error = XS_DRIVER_STUFFUP; 922 return (0); 923 } 924 925 xs->error = XS_NOERROR; 926 return (1); 927 } 928 929 /* Start a raw SCSI operation */ 930 int 931 gdt_raw_scsi_cmd(xs) 932 struct scsi_xfer *xs; 933 { 934 GDT_DPRINTF(GDT_D_CMD, ("gdt_raw_scsi_cmd ")); 935 936 /* XXX Not yet implemented */ 937 xs->error = XS_DRIVER_STUFFUP; 938 return (COMPLETE); 939 } 940 941 void 942 gdt_clear_events(gdt) 943 struct gdt_softc *gdt; 944 { 945 GDT_DPRINTF(GDT_D_MISC, ("gdt_clear_events(%p) ", gdt)); 946 947 /* XXX To be implemented */ 948 } 949 950 int 951 gdt_async_event(gdt, service) 952 struct gdt_softc *gdt; 953 int service; 954 { 955 GDT_DPRINTF(GDT_D_INTR, ("gdt_async_event(%p, %d) ", gdt, service)); 956 957 if (service == GDT_SCREENSERVICE) { 958 /* XXX To be implemented */ 959 } else { 960 /* XXX To be implemented */ 961 } 962 963 return (0); 964 } 965 966 int 967 gdt_sync_event(gdt, service, index, xs) 968 struct gdt_softc *gdt; 969 int service; 970 u_int8_t index; 971 struct scsi_xfer *xs; 972 { 973 GDT_DPRINTF(GDT_D_INTR, 974 ("gdt_sync_event(%p, %d, %d, %p) ", gdt, service, index, xs)); 975 976 if (service == GDT_SCREENSERVICE) { 977 GDT_DPRINTF(GDT_D_INTR, ("service == GDT_SCREENSERVICE ")); 978 /* XXX To be implemented */ 979 return (0); 980 } else { 981 switch (gdt->sc_status) { 982 case GDT_S_OK: 983 GDT_DPRINTF(GDT_D_INTR, ("sc_status == GDT_S_OK ")); 984 /* XXX To be implemented */ 985 break; 986 case GDT_S_BSY: 987 GDT_DPRINTF(GDT_D_INTR, ("sc_status == GDT_S_BSY ")); 988 /* XXX To be implemented */ 989 return (2); 990 default: 991 GDT_DPRINTF(GDT_D_INTR, ("sc_status is %d ", 992 gdt->sc_status)); 993 /* XXX To be implemented */ 994 return (0); 995 } 996 } 997 998 return (1); 999 } 1000 1001 int 1002 gdt_intr(arg) 1003 void *arg; 1004 { 1005 struct gdt_softc *gdt = arg; 1006 struct gdt_intr_ctx ctx; 1007 int chain = 1; 1008 int sync_val = 0; 1009 struct scsi_xfer *xs; 1010 int prev_cmd; 1011 struct gdt_ccb *ccb; 1012 gdt_lock_t lock; 1013 1014 GDT_DPRINTF(GDT_D_INTR, ("gdt_intr(%p) ", gdt)); 1015 1016 /* If polling and we were not called from gdt_wait, just return */ 1017 if (gdt_polling && !gdt_from_wait) 1018 return (0); 1019 1020 if (!gdt_polling) 1021 lock = GDT_LOCK_GDT(gdt); 1022 1023 ctx.istatus = gdt->sc_get_status(gdt); 1024 if (!ctx.istatus) { 1025 if (!gdt_polling) 1026 GDT_UNLOCK_GDT(gdt, lock); 1027 gdt->sc_status = GDT_S_NO_STATUS; 1028 return (0); 1029 } 1030 1031 gdt_wait_index = 0; 1032 ctx.service = ctx.info2 = 0; 1033 1034 gdt->sc_intr(gdt, &ctx); 1035 1036 gdt->sc_status = ctx.cmd_status; 1037 gdt->sc_info = ctx.info; 1038 gdt->sc_info2 = ctx.info2; 1039 1040 if (gdt_from_wait) { 1041 gdt_wait_gdt = gdt; 1042 gdt_wait_index = ctx.istatus; 1043 } 1044 1045 switch (ctx.istatus) { 1046 case GDT_ASYNCINDEX: 1047 gdt_async_event(gdt, ctx.service); 1048 goto finish; 1049 1050 case GDT_SPEZINDEX: 1051 printf("%s: uninitialized or unknown service (%d %d)\n", 1052 gdt->sc_dev.dv_xname, ctx.info, ctx.info2); 1053 chain = 0; 1054 goto finish; 1055 } 1056 1057 ccb = &gdt->sc_ccbs[ctx.istatus - 2]; 1058 xs = ccb->gc_xs; 1059 if (!gdt_polling) 1060 timeout_del(&xs->stimeout); 1061 ctx.service = ccb->gc_service; 1062 prev_cmd = ccb->gc_flags & GDT_GCF_CMD_MASK; 1063 if (xs && xs->cmd->opcode != PREVENT_ALLOW && 1064 xs->cmd->opcode != SYNCHRONIZE_CACHE) { 1065 bus_dmamap_sync(gdt->sc_dmat, ccb->gc_dmamap_xfer, 1066 (xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : 1067 BUS_DMASYNC_POSTWRITE); 1068 bus_dmamap_unload(gdt->sc_dmat, ccb->gc_dmamap_xfer); 1069 } 1070 gdt_free_ccb(gdt, ccb); 1071 switch (prev_cmd) { 1072 case GDT_GCF_UNUSED: 1073 /* XXX Not yet implemented */ 1074 chain = 0; 1075 goto finish; 1076 case GDT_GCF_INTERNAL: 1077 chain = 0; 1078 goto finish; 1079 } 1080 1081 sync_val = gdt_sync_event(gdt, ctx.service, ctx.istatus, xs); 1082 1083 finish: 1084 if (!gdt_polling) 1085 GDT_UNLOCK_GDT(gdt, lock); 1086 1087 switch (sync_val) { 1088 case 1: 1089 xs->flags |= ITSDONE; 1090 scsi_done(xs); 1091 break; 1092 1093 case 2: 1094 gdt_enqueue(gdt, xs, 0); 1095 } 1096 1097 if (chain) 1098 gdt_chain(gdt); 1099 return (1); 1100 } 1101 1102 void 1103 gdtminphys(bp) 1104 struct buf *bp; 1105 { 1106 #if 0 1107 u_int8_t *buf = bp->b_data; 1108 paddr_t pa; 1109 long off; 1110 #endif 1111 1112 GDT_DPRINTF(GDT_D_MISC, ("gdtminphys(0x%x) ", bp)); 1113 1114 #if 1 1115 /* As this is way more than MAXPHYS it's really not necessary. */ 1116 if (bp->b_bcount > ((GDT_MAXOFFSETS - 1) * PAGE_SIZE)) 1117 bp->b_bcount = ((GDT_MAXOFFSETS - 1) * PAGE_SIZE); 1118 #else 1119 for (off = PAGE_SIZE, pa = vtophys(buf); off < bp->b_bcount; 1120 off += PAGE_SIZE) 1121 if (pa + off != vtophys(buf + off)) { 1122 bp->b_bcount = off; 1123 break; 1124 } 1125 #endif 1126 minphys(bp); 1127 } 1128 1129 int 1130 gdt_wait(gdt, ccb, timeout) 1131 struct gdt_softc *gdt; 1132 struct gdt_ccb *ccb; 1133 int timeout; 1134 { 1135 int rv = 0; 1136 1137 GDT_DPRINTF(GDT_D_MISC, 1138 ("gdt_wait(%p, %p, %d) ", gdt, ccb, timeout)); 1139 1140 gdt_from_wait = 1; 1141 do { 1142 if (gdt_intr(gdt) && gdt == gdt_wait_gdt && 1143 ccb->gc_cmd_index == gdt_wait_index) { 1144 rv = 1; 1145 break; 1146 } 1147 DELAY(1); 1148 } while (--timeout); 1149 gdt_from_wait = 0; 1150 1151 while (gdt->sc_test_busy(gdt)) 1152 DELAY(0); /* XXX correct? */ 1153 1154 return (rv); 1155 } 1156 1157 int 1158 gdt_internal_cmd(gdt, service, opcode, arg1, arg2, arg3) 1159 struct gdt_softc *gdt; 1160 u_int8_t service; 1161 u_int16_t opcode; 1162 u_int32_t arg1, arg2, arg3; 1163 { 1164 int retries; 1165 struct gdt_ccb *ccb; 1166 1167 GDT_DPRINTF(GDT_D_CMD, ("gdt_internal_cmd(%p, %d, %d, %d, %d, %d) ", 1168 gdt, service, opcode, arg1, arg2, arg3)); 1169 1170 bzero(gdt->sc_cmd, GDT_CMD_SZ); 1171 1172 for (retries = GDT_RETRIES; ; ) { 1173 ccb = gdt_get_ccb(gdt, SCSI_NOSLEEP); 1174 if (ccb == NULL) { 1175 printf("%s: no free command index found\n", 1176 gdt->sc_dev.dv_xname); 1177 return (0); 1178 } 1179 ccb->gc_service = service; 1180 gdt_ccb_set_cmd(ccb, GDT_GCF_INTERNAL); 1181 1182 gdt->sc_set_sema0(gdt); 1183 gdt_enc32(gdt->sc_cmd + GDT_CMD_COMMANDINDEX, 1184 ccb->gc_cmd_index); 1185 gdt_enc16(gdt->sc_cmd + GDT_CMD_OPCODE, opcode); 1186 gdt_enc32(gdt->sc_cmd + GDT_CMD_BOARDNODE, GDT_LOCALBOARD); 1187 1188 switch (service) { 1189 case GDT_CACHESERVICE: 1190 if (opcode == GDT_IOCTL) { 1191 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + 1192 GDT_IOCTL_SUBFUNC, arg1); 1193 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + 1194 GDT_IOCTL_CHANNEL, arg2); 1195 gdt_enc16(gdt->sc_cmd + GDT_CMD_UNION + 1196 GDT_IOCTL_PARAM_SIZE, (u_int16_t)arg3); 1197 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + 1198 GDT_IOCTL_P_PARAM, 1199 vtophys(gdt->sc_scratch)); 1200 } else { 1201 gdt_enc16(gdt->sc_cmd + GDT_CMD_UNION + 1202 GDT_CACHE_DEVICENO, (u_int16_t)arg1); 1203 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + 1204 GDT_CACHE_BLOCKNO, arg2); 1205 } 1206 break; 1207 1208 case GDT_SCSIRAWSERVICE: 1209 gdt_enc32(gdt->sc_cmd + GDT_CMD_UNION + 1210 GDT_RAW_DIRECTION, arg1); 1211 gdt->sc_cmd[GDT_CMD_UNION + GDT_RAW_BUS] = 1212 (u_int8_t)arg2; 1213 gdt->sc_cmd[GDT_CMD_UNION + GDT_RAW_TARGET] = 1214 (u_int8_t)arg3; 1215 gdt->sc_cmd[GDT_CMD_UNION + GDT_RAW_LUN] = 1216 (u_int8_t)(arg3 >> 8); 1217 } 1218 1219 gdt->sc_cmd_len = GDT_CMD_SZ; 1220 gdt->sc_cmd_off = 0; 1221 gdt->sc_cmd_cnt = 0; 1222 gdt->sc_copy_cmd(gdt, ccb); 1223 gdt->sc_release_event(gdt, ccb); 1224 DELAY(20); 1225 if (!gdt_wait(gdt, ccb, GDT_POLL_TIMEOUT)) 1226 return (0); 1227 if (gdt->sc_status != GDT_S_BSY || --retries == 0) 1228 break; 1229 DELAY(1); 1230 } 1231 return (gdt->sc_status == GDT_S_OK); 1232 } 1233 1234 struct gdt_ccb * 1235 gdt_get_ccb(gdt, flags) 1236 struct gdt_softc *gdt; 1237 int flags; 1238 { 1239 struct gdt_ccb *ccb; 1240 gdt_lock_t lock; 1241 1242 GDT_DPRINTF(GDT_D_QUEUE, ("gdt_get_ccb(%p, 0x%x) ", gdt, flags)); 1243 1244 lock = GDT_LOCK_GDT(gdt); 1245 1246 for (;;) { 1247 ccb = TAILQ_FIRST(&gdt->sc_free_ccb); 1248 if (ccb != NULL) 1249 break; 1250 if (flags & SCSI_NOSLEEP) 1251 goto bail_out; 1252 tsleep(&gdt->sc_free_ccb, PRIBIO, "gdt_ccb", 0); 1253 } 1254 1255 TAILQ_REMOVE(&gdt->sc_free_ccb, ccb, gc_chain); 1256 1257 bail_out: 1258 GDT_UNLOCK_GDT(gdt, lock); 1259 return (ccb); 1260 } 1261 1262 void 1263 gdt_free_ccb(gdt, ccb) 1264 struct gdt_softc *gdt; 1265 struct gdt_ccb *ccb; 1266 { 1267 gdt_lock_t lock; 1268 1269 GDT_DPRINTF(GDT_D_QUEUE, ("gdt_free_ccb(%p, %p) ", gdt, ccb)); 1270 1271 lock = GDT_LOCK_GDT(gdt); 1272 1273 TAILQ_INSERT_HEAD(&gdt->sc_free_ccb, ccb, gc_chain); 1274 1275 /* If the free list was empty, wake up potential waiters. */ 1276 if (TAILQ_NEXT(ccb, gc_chain) == NULL) 1277 wakeup(&gdt->sc_free_ccb); 1278 1279 GDT_UNLOCK_GDT(gdt, lock); 1280 } 1281 1282 void 1283 gdt_enqueue_ccb(gdt, ccb) 1284 struct gdt_softc *gdt; 1285 struct gdt_ccb *ccb; 1286 { 1287 GDT_DPRINTF(GDT_D_QUEUE, ("gdt_enqueue_ccb(%p, %p) ", gdt, ccb)); 1288 1289 timeout_set(&ccb->gc_xs->stimeout, gdt_timeout, ccb); 1290 TAILQ_INSERT_TAIL(&gdt->sc_ccbq, ccb, gc_chain); 1291 gdt_start_ccbs(gdt); 1292 } 1293 1294 void 1295 gdt_start_ccbs(gdt) 1296 struct gdt_softc *gdt; 1297 { 1298 struct gdt_ccb *ccb; 1299 struct scsi_xfer *xs; 1300 1301 GDT_DPRINTF(GDT_D_QUEUE, ("gdt_start_ccbs(%p) ", gdt)); 1302 1303 while ((ccb = TAILQ_FIRST(&gdt->sc_ccbq)) != NULL) { 1304 1305 xs = ccb->gc_xs; 1306 if (ccb->gc_flags & GDT_GCF_WATCHDOG) 1307 timeout_del(&xs->stimeout); 1308 1309 if (gdt_exec_ccb(ccb) == 0) { 1310 ccb->gc_flags |= GDT_GCF_WATCHDOG; 1311 timeout_set(&ccb->gc_xs->stimeout, gdt_watchdog, ccb); 1312 timeout_add(&xs->stimeout, 1313 (GDT_WATCH_TIMEOUT * hz) / 1000); 1314 break; 1315 } 1316 TAILQ_REMOVE(&gdt->sc_ccbq, ccb, gc_chain); 1317 1318 if ((xs->flags & SCSI_POLL) == 0) { 1319 timeout_set(&ccb->gc_xs->stimeout, gdt_timeout, ccb); 1320 timeout_add(&xs->stimeout, 1321 (ccb->gc_timeout * hz) / 1000); 1322 } 1323 } 1324 } 1325 1326 void 1327 gdt_chain(gdt) 1328 struct gdt_softc *gdt; 1329 { 1330 GDT_DPRINTF(GDT_D_INTR, ("gdt_chain(%p) ", gdt)); 1331 1332 if (LIST_FIRST(&gdt->sc_queue)) 1333 gdt_scsi_cmd(LIST_FIRST(&gdt->sc_queue)); 1334 } 1335 1336 void 1337 gdt_timeout(arg) 1338 void *arg; 1339 { 1340 struct gdt_ccb *ccb = arg; 1341 struct scsi_link *link = ccb->gc_xs->sc_link; 1342 struct gdt_softc *gdt = link->adapter_softc; 1343 gdt_lock_t lock; 1344 1345 sc_print_addr(link); 1346 printf("timed out\n"); 1347 1348 /* XXX Test for multiple timeouts */ 1349 1350 ccb->gc_xs->error = XS_TIMEOUT; 1351 lock = GDT_LOCK_GDT(gdt); 1352 gdt_enqueue_ccb(gdt, ccb); 1353 GDT_UNLOCK_GDT(gdt, lock); 1354 } 1355 1356 void 1357 gdt_watchdog(arg) 1358 void *arg; 1359 { 1360 struct gdt_ccb *ccb = arg; 1361 struct scsi_link *link = ccb->gc_xs->sc_link; 1362 struct gdt_softc *gdt = link->adapter_softc; 1363 gdt_lock_t lock; 1364 1365 lock = GDT_LOCK_GDT(gdt); 1366 ccb->gc_flags &= ~GDT_GCF_WATCHDOG; 1367 gdt_start_ccbs(gdt); 1368 GDT_UNLOCK_GDT(gdt, lock); 1369 } 1370