| 1 | /* $NetBSD: adv.c,v 1.47 2016/07/14 04:19:26 msaitoh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Generic driver for the Advanced Systems Inc. Narrow SCSI controllers |
| 5 | * |
| 6 | * Copyright (c) 1998 The NetBSD Foundation, Inc. |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Author: Baldassare Dante Profeta <dante@mclink.it> |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * 3. All advertising materials mentioning features or use of this software |
| 20 | * must display the following acknowledgement: |
| 21 | * This product includes software developed by the NetBSD |
| 22 | * Foundation, Inc. and its contributors. |
| 23 | * 4. Neither the name of The NetBSD Foundation nor the names of its |
| 24 | * contributors may be used to endorse or promote products derived |
| 25 | * from this software without specific prior written permission. |
| 26 | * |
| 27 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 28 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 29 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 30 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 31 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 32 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 33 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 34 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 35 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 36 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 37 | * POSSIBILITY OF SUCH DAMAGE. |
| 38 | */ |
| 39 | |
| 40 | #include <sys/cdefs.h> |
| 41 | __KERNEL_RCSID(0, "$NetBSD: adv.c,v 1.47 2016/07/14 04:19:26 msaitoh Exp $" ); |
| 42 | |
| 43 | #include <sys/param.h> |
| 44 | #include <sys/systm.h> |
| 45 | #include <sys/callout.h> |
| 46 | #include <sys/kernel.h> |
| 47 | #include <sys/errno.h> |
| 48 | #include <sys/ioctl.h> |
| 49 | #include <sys/device.h> |
| 50 | #include <sys/malloc.h> |
| 51 | #include <sys/buf.h> |
| 52 | #include <sys/proc.h> |
| 53 | |
| 54 | #include <sys/bus.h> |
| 55 | #include <sys/intr.h> |
| 56 | |
| 57 | #include <dev/scsipi/scsi_all.h> |
| 58 | #include <dev/scsipi/scsipi_all.h> |
| 59 | #include <dev/scsipi/scsiconf.h> |
| 60 | |
| 61 | #include <dev/ic/advlib.h> |
| 62 | #include <dev/ic/adv.h> |
| 63 | |
| 64 | #ifndef DDB |
| 65 | #define Debugger() panic("should call debugger here (adv.c)") |
| 66 | #endif /* ! DDB */ |
| 67 | |
| 68 | |
| 69 | /* #define ASC_DEBUG */ |
| 70 | |
| 71 | /******************************************************************************/ |
| 72 | |
| 73 | |
| 74 | static int adv_alloc_control_data(ASC_SOFTC *); |
| 75 | static void adv_free_control_data(ASC_SOFTC *); |
| 76 | static int adv_create_ccbs(ASC_SOFTC *, ADV_CCB *, int); |
| 77 | static void adv_free_ccb(ASC_SOFTC *, ADV_CCB *); |
| 78 | static void adv_reset_ccb(ADV_CCB *); |
| 79 | static int adv_init_ccb(ASC_SOFTC *, ADV_CCB *); |
| 80 | static ADV_CCB *adv_get_ccb(ASC_SOFTC *); |
| 81 | static void adv_queue_ccb(ASC_SOFTC *, ADV_CCB *); |
| 82 | static void adv_start_ccbs(ASC_SOFTC *); |
| 83 | |
| 84 | |
| 85 | static void adv_scsipi_request(struct scsipi_channel *, |
| 86 | scsipi_adapter_req_t, void *); |
| 87 | static void advminphys(struct buf *); |
| 88 | static void adv_narrow_isr_callback(ASC_SOFTC *, ASC_QDONE_INFO *); |
| 89 | |
| 90 | static int adv_poll(ASC_SOFTC *, struct scsipi_xfer *, int); |
| 91 | static void adv_timeout(void *); |
| 92 | static void adv_watchdog(void *); |
| 93 | |
| 94 | |
| 95 | /******************************************************************************/ |
| 96 | |
| 97 | #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ |
| 98 | #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ |
| 99 | |
| 100 | /******************************************************************************/ |
| 101 | /* Control Blocks routines */ |
| 102 | /******************************************************************************/ |
| 103 | |
| 104 | |
| 105 | static int |
| 106 | adv_alloc_control_data(ASC_SOFTC *sc) |
| 107 | { |
| 108 | int error; |
| 109 | |
| 110 | /* |
| 111 | * Allocate the control blocks. |
| 112 | */ |
| 113 | if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), |
| 114 | PAGE_SIZE, 0, &sc->sc_control_seg, 1, |
| 115 | &sc->sc_control_nsegs, BUS_DMA_NOWAIT)) != 0) { |
| 116 | aprint_error_dev(sc->sc_dev, "unable to allocate control " |
| 117 | "structures, error = %d\n" , error); |
| 118 | return (error); |
| 119 | } |
| 120 | if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_control_seg, |
| 121 | sc->sc_control_nsegs, sizeof(struct adv_control), |
| 122 | (void **) & sc->sc_control, |
| 123 | BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { |
| 124 | aprint_error_dev(sc->sc_dev, |
| 125 | "unable to map control structures, error = %d\n" , error); |
| 126 | return (error); |
| 127 | } |
| 128 | /* |
| 129 | * Create and load the DMA map used for the control blocks. |
| 130 | */ |
| 131 | if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), |
| 132 | 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, |
| 133 | &sc->sc_dmamap_control)) != 0) { |
| 134 | aprint_error_dev(sc->sc_dev, |
| 135 | "unable to create control DMA map, error = %d\n" , error); |
| 136 | return (error); |
| 137 | } |
| 138 | if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, |
| 139 | sc->sc_control, sizeof(struct adv_control), NULL, |
| 140 | BUS_DMA_NOWAIT)) != 0) { |
| 141 | aprint_error_dev(sc->sc_dev, |
| 142 | "unable to load control DMA map, error = %d\n" , error); |
| 143 | return (error); |
| 144 | } |
| 145 | |
| 146 | /* |
| 147 | * Initialize the overrun_buf address. |
| 148 | */ |
| 149 | sc->overrun_buf = sc->sc_dmamap_control->dm_segs[0].ds_addr + |
| 150 | offsetof(struct adv_control, overrun_buf); |
| 151 | |
| 152 | return (0); |
| 153 | } |
| 154 | |
| 155 | static void |
| 156 | adv_free_control_data(ASC_SOFTC *sc) |
| 157 | { |
| 158 | |
| 159 | bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_control); |
| 160 | bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_control); |
| 161 | sc->sc_dmamap_control = NULL; |
| 162 | |
| 163 | bus_dmamem_unmap(sc->sc_dmat, (void *) sc->sc_control, |
| 164 | sizeof(struct adv_control)); |
| 165 | bus_dmamem_free(sc->sc_dmat, &sc->sc_control_seg, |
| 166 | sc->sc_control_nsegs); |
| 167 | } |
| 168 | |
| 169 | /* |
| 170 | * Create a set of ccbs and add them to the free list. Called once |
| 171 | * by adv_init(). We return the number of CCBs successfully created. |
| 172 | */ |
| 173 | static int |
| 174 | adv_create_ccbs(ASC_SOFTC *sc, ADV_CCB *ccbstore, int count) |
| 175 | { |
| 176 | ADV_CCB *ccb; |
| 177 | int i, error; |
| 178 | |
| 179 | memset(ccbstore, 0, sizeof(ADV_CCB) * count); |
| 180 | for (i = 0; i < count; i++) { |
| 181 | ccb = &ccbstore[i]; |
| 182 | if ((error = adv_init_ccb(sc, ccb)) != 0) { |
| 183 | aprint_error_dev(sc->sc_dev, |
| 184 | "unable to initialize ccb, error = %d\n" , error); |
| 185 | return (i); |
| 186 | } |
| 187 | TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); |
| 188 | } |
| 189 | |
| 190 | return (i); |
| 191 | } |
| 192 | |
| 193 | |
| 194 | /* |
| 195 | * A ccb is put onto the free list. |
| 196 | */ |
| 197 | static void |
| 198 | adv_free_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) |
| 199 | { |
| 200 | int s; |
| 201 | |
| 202 | s = splbio(); |
| 203 | adv_reset_ccb(ccb); |
| 204 | TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); |
| 205 | splx(s); |
| 206 | } |
| 207 | |
| 208 | |
| 209 | static void |
| 210 | adv_reset_ccb(ADV_CCB *ccb) |
| 211 | { |
| 212 | |
| 213 | ccb->flags = 0; |
| 214 | } |
| 215 | |
| 216 | |
| 217 | static int |
| 218 | adv_init_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) |
| 219 | { |
| 220 | int hashnum, error; |
| 221 | |
| 222 | callout_init(&ccb->ccb_watchdog, 0); |
| 223 | |
| 224 | /* |
| 225 | * Create the DMA map for this CCB. |
| 226 | */ |
| 227 | error = bus_dmamap_create(sc->sc_dmat, |
| 228 | (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, |
| 229 | ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, |
| 230 | 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); |
| 231 | if (error) { |
| 232 | aprint_error_dev(sc->sc_dev, |
| 233 | "unable to create DMA map, error = %d\n" , error); |
| 234 | return (error); |
| 235 | } |
| 236 | |
| 237 | /* |
| 238 | * put in the phystokv hash table |
| 239 | * Never gets taken out. |
| 240 | */ |
| 241 | ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + |
| 242 | ADV_CCB_OFF(ccb); |
| 243 | hashnum = CCB_HASH(ccb->hashkey); |
| 244 | ccb->nexthash = sc->sc_ccbhash[hashnum]; |
| 245 | sc->sc_ccbhash[hashnum] = ccb; |
| 246 | |
| 247 | adv_reset_ccb(ccb); |
| 248 | return (0); |
| 249 | } |
| 250 | |
| 251 | |
| 252 | /* |
| 253 | * Get a free ccb |
| 254 | * |
| 255 | * If there are none, see if we can allocate a new one |
| 256 | */ |
| 257 | static ADV_CCB * |
| 258 | adv_get_ccb(ASC_SOFTC *sc) |
| 259 | { |
| 260 | ADV_CCB *ccb = 0; |
| 261 | int s; |
| 262 | |
| 263 | s = splbio(); |
| 264 | ccb = TAILQ_FIRST(&sc->sc_free_ccb); |
| 265 | if (ccb != NULL) { |
| 266 | TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); |
| 267 | ccb->flags |= CCB_ALLOC; |
| 268 | } |
| 269 | splx(s); |
| 270 | return (ccb); |
| 271 | } |
| 272 | |
| 273 | |
| 274 | /* |
| 275 | * Given a physical address, find the ccb that it corresponds to. |
| 276 | */ |
| 277 | ADV_CCB * |
| 278 | adv_ccb_phys_kv(ASC_SOFTC *sc, u_long ccb_phys) |
| 279 | { |
| 280 | int hashnum = CCB_HASH(ccb_phys); |
| 281 | ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; |
| 282 | |
| 283 | while (ccb) { |
| 284 | if (ccb->hashkey == ccb_phys) |
| 285 | break; |
| 286 | ccb = ccb->nexthash; |
| 287 | } |
| 288 | return (ccb); |
| 289 | } |
| 290 | |
| 291 | |
| 292 | /* |
| 293 | * Queue a CCB to be sent to the controller, and send it if possible. |
| 294 | */ |
| 295 | static void |
| 296 | adv_queue_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) |
| 297 | { |
| 298 | |
| 299 | TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); |
| 300 | |
| 301 | adv_start_ccbs(sc); |
| 302 | } |
| 303 | |
| 304 | |
| 305 | static void |
| 306 | adv_start_ccbs(ASC_SOFTC *sc) |
| 307 | { |
| 308 | ADV_CCB *ccb; |
| 309 | |
| 310 | while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { |
| 311 | if (ccb->flags & CCB_WATCHDOG) |
| 312 | callout_stop(&ccb->ccb_watchdog); |
| 313 | |
| 314 | if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { |
| 315 | ccb->flags |= CCB_WATCHDOG; |
| 316 | callout_reset(&ccb->ccb_watchdog, |
| 317 | (ADV_WATCH_TIMEOUT * hz) / 1000, |
| 318 | adv_watchdog, ccb); |
| 319 | break; |
| 320 | } |
| 321 | TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); |
| 322 | |
| 323 | if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) |
| 324 | callout_reset(&ccb->xs->xs_callout, |
| 325 | mstohz(ccb->timeout), adv_timeout, ccb); |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | |
| 330 | /******************************************************************************/ |
| 331 | /* SCSI layer interfacing routines */ |
| 332 | /******************************************************************************/ |
| 333 | |
| 334 | |
| 335 | int |
| 336 | adv_init(ASC_SOFTC *sc) |
| 337 | { |
| 338 | int warn; |
| 339 | |
| 340 | if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { |
| 341 | aprint_error("adv_init: failed to find signature\n" ); |
| 342 | return (1); |
| 343 | } |
| 344 | |
| 345 | /* |
| 346 | * Read the board configuration |
| 347 | */ |
| 348 | AscInitASC_SOFTC(sc); |
| 349 | warn = AscInitFromEEP(sc); |
| 350 | if (warn) { |
| 351 | aprint_error_dev(sc->sc_dev, "-get: " ); |
| 352 | switch (warn) { |
| 353 | case -1: |
| 354 | aprint_normal("Chip is not halted\n" ); |
| 355 | break; |
| 356 | |
| 357 | case -2: |
| 358 | aprint_normal("Couldn't get MicroCode Start" |
| 359 | " address\n" ); |
| 360 | break; |
| 361 | |
| 362 | case ASC_WARN_IO_PORT_ROTATE: |
| 363 | aprint_normal("I/O port address modified\n" ); |
| 364 | break; |
| 365 | |
| 366 | case ASC_WARN_AUTO_CONFIG: |
| 367 | aprint_normal("I/O port increment switch enabled\n" ); |
| 368 | break; |
| 369 | |
| 370 | case ASC_WARN_EEPROM_CHKSUM: |
| 371 | aprint_normal("EEPROM checksum error\n" ); |
| 372 | break; |
| 373 | |
| 374 | case ASC_WARN_IRQ_MODIFIED: |
| 375 | aprint_normal("IRQ modified\n" ); |
| 376 | break; |
| 377 | |
| 378 | case ASC_WARN_CMD_QNG_CONFLICT: |
| 379 | aprint_normal("tag queuing enabled w/o disconnects\n" ); |
| 380 | break; |
| 381 | |
| 382 | default: |
| 383 | aprint_normal("unknown warning %d\n" , warn); |
| 384 | } |
| 385 | } |
| 386 | if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) |
| 387 | sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; |
| 388 | |
| 389 | /* |
| 390 | * Modify the board configuration |
| 391 | */ |
| 392 | warn = AscInitFromASC_SOFTC(sc); |
| 393 | if (warn) { |
| 394 | aprint_error_dev(sc->sc_dev, "-set: " ); |
| 395 | switch (warn) { |
| 396 | case ASC_WARN_CMD_QNG_CONFLICT: |
| 397 | aprint_normal("tag queuing enabled w/o disconnects\n" ); |
| 398 | break; |
| 399 | |
| 400 | case ASC_WARN_AUTO_CONFIG: |
| 401 | aprint_normal("I/O port increment switch enabled\n" ); |
| 402 | break; |
| 403 | |
| 404 | default: |
| 405 | aprint_normal("unknown warning %d\n" , warn); |
| 406 | } |
| 407 | } |
| 408 | sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; |
| 409 | |
| 410 | return (0); |
| 411 | } |
| 412 | |
| 413 | |
| 414 | void |
| 415 | adv_attach(ASC_SOFTC *sc) |
| 416 | { |
| 417 | struct scsipi_adapter *adapt = &sc->sc_adapter; |
| 418 | struct scsipi_channel *chan = &sc->sc_channel; |
| 419 | int i, error; |
| 420 | |
| 421 | /* |
| 422 | * Initialize board RISC chip and enable interrupts. |
| 423 | */ |
| 424 | switch (AscInitDriver(sc)) { |
| 425 | case 0: |
| 426 | /* AllOK */ |
| 427 | break; |
| 428 | |
| 429 | case 1: |
| 430 | panic("%s: bad signature" , device_xname(sc->sc_dev)); |
| 431 | break; |
| 432 | |
| 433 | case 2: |
| 434 | panic("%s: unable to load MicroCode" , |
| 435 | device_xname(sc->sc_dev)); |
| 436 | break; |
| 437 | |
| 438 | case 3: |
| 439 | panic("%s: unable to initialize MicroCode" , |
| 440 | device_xname(sc->sc_dev)); |
| 441 | break; |
| 442 | |
| 443 | default: |
| 444 | panic("%s: unable to initialize board RISC chip" , |
| 445 | device_xname(sc->sc_dev)); |
| 446 | } |
| 447 | |
| 448 | /* |
| 449 | * Fill in the scsipi_adapter. |
| 450 | */ |
| 451 | memset(adapt, 0, sizeof(*adapt)); |
| 452 | adapt->adapt_dev = sc->sc_dev; |
| 453 | adapt->adapt_nchannels = 1; |
| 454 | /* adapt_openings initialized below */ |
| 455 | /* adapt_max_periph initialized below */ |
| 456 | adapt->adapt_request = adv_scsipi_request; |
| 457 | adapt->adapt_minphys = advminphys; |
| 458 | |
| 459 | /* |
| 460 | * Fill in the scsipi_channel. |
| 461 | */ |
| 462 | memset(chan, 0, sizeof(*chan)); |
| 463 | chan->chan_adapter = adapt; |
| 464 | chan->chan_bustype = &scsi_bustype; |
| 465 | chan->chan_channel = 0; |
| 466 | chan->chan_ntargets = 8; |
| 467 | chan->chan_nluns = 8; |
| 468 | chan->chan_id = sc->chip_scsi_id; |
| 469 | |
| 470 | TAILQ_INIT(&sc->sc_free_ccb); |
| 471 | TAILQ_INIT(&sc->sc_waiting_ccb); |
| 472 | |
| 473 | /* |
| 474 | * Allocate the Control Blocks and the overrun buffer. |
| 475 | */ |
| 476 | error = adv_alloc_control_data(sc); |
| 477 | if (error) |
| 478 | return; /* (error) */ |
| 479 | |
| 480 | /* |
| 481 | * Create and initialize the Control Blocks. |
| 482 | */ |
| 483 | i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); |
| 484 | if (i == 0) { |
| 485 | aprint_error_dev(sc->sc_dev, |
| 486 | "unable to create control blocks\n" ); |
| 487 | return; /* (ENOMEM) */ ; |
| 488 | } else if (i != ADV_MAX_CCB) { |
| 489 | aprint_error_dev(sc->sc_dev, |
| 490 | "WARNING: only %d of %d control blocks created\n" , |
| 491 | i, ADV_MAX_CCB); |
| 492 | } |
| 493 | |
| 494 | adapt->adapt_openings = i; |
| 495 | adapt->adapt_max_periph = adapt->adapt_openings; |
| 496 | |
| 497 | sc->sc_child = config_found(sc->sc_dev, chan, scsiprint); |
| 498 | } |
| 499 | |
| 500 | int |
| 501 | adv_detach(ASC_SOFTC *sc, int flags) |
| 502 | { |
| 503 | int rv = 0; |
| 504 | |
| 505 | if (sc->sc_child != NULL) |
| 506 | rv = config_detach(sc->sc_child, flags); |
| 507 | |
| 508 | adv_free_control_data(sc); |
| 509 | |
| 510 | return (rv); |
| 511 | } |
| 512 | |
| 513 | static void |
| 514 | advminphys(struct buf *bp) |
| 515 | { |
| 516 | |
| 517 | if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) |
| 518 | bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); |
| 519 | minphys(bp); |
| 520 | } |
| 521 | |
| 522 | |
| 523 | /* |
| 524 | * start a scsi operation given the command and the data address. Also needs |
| 525 | * the unit, target and lu. |
| 526 | */ |
| 527 | |
| 528 | static void |
| 529 | adv_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, |
| 530 | void *arg) |
| 531 | { |
| 532 | struct scsipi_xfer *xs; |
| 533 | struct scsipi_periph *periph; |
| 534 | ASC_SOFTC *sc = device_private(chan->chan_adapter->adapt_dev); |
| 535 | bus_dma_tag_t dmat = sc->sc_dmat; |
| 536 | ADV_CCB *ccb; |
| 537 | int s, flags, error, nsegs; |
| 538 | |
| 539 | switch (req) { |
| 540 | case ADAPTER_REQ_RUN_XFER: |
| 541 | xs = arg; |
| 542 | periph = xs->xs_periph; |
| 543 | flags = xs->xs_control; |
| 544 | |
| 545 | /* |
| 546 | * Get a CCB to use. |
| 547 | */ |
| 548 | ccb = adv_get_ccb(sc); |
| 549 | #ifdef DIAGNOSTIC |
| 550 | /* |
| 551 | * This should never happen as we track the resources |
| 552 | * in the mid-layer. |
| 553 | */ |
| 554 | if (ccb == NULL) { |
| 555 | scsipi_printaddr(periph); |
| 556 | printf("unable to allocate ccb\n" ); |
| 557 | panic("adv_scsipi_request" ); |
| 558 | } |
| 559 | #endif |
| 560 | |
| 561 | ccb->xs = xs; |
| 562 | ccb->timeout = xs->timeout; |
| 563 | |
| 564 | /* |
| 565 | * Build up the request |
| 566 | */ |
| 567 | memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); |
| 568 | |
| 569 | ccb->scsiq.q2.ccb_ptr = |
| 570 | sc->sc_dmamap_control->dm_segs[0].ds_addr + |
| 571 | ADV_CCB_OFF(ccb); |
| 572 | |
| 573 | ccb->scsiq.cdbptr = &xs->cmd->opcode; |
| 574 | ccb->scsiq.q2.cdb_len = xs->cmdlen; |
| 575 | ccb->scsiq.q1.target_id = |
| 576 | ASC_TID_TO_TARGET_ID(periph->periph_target); |
| 577 | ccb->scsiq.q1.target_lun = periph->periph_lun; |
| 578 | ccb->scsiq.q2.target_ix = |
| 579 | ASC_TIDLUN_TO_IX(periph->periph_target, |
| 580 | periph->periph_lun); |
| 581 | ccb->scsiq.q1.sense_addr = |
| 582 | sc->sc_dmamap_control->dm_segs[0].ds_addr + |
| 583 | ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); |
| 584 | ccb->scsiq.q1.sense_len = sizeof(struct scsi_sense_data); |
| 585 | |
| 586 | /* |
| 587 | * If there are any outstanding requests for the current |
| 588 | * target, then every 255th request send an ORDERED request. |
| 589 | * This heuristic tries to retain the benefit of request |
| 590 | * sorting while preventing request starvation. 255 is the |
| 591 | * max number of tags or pending commands a device may have |
| 592 | * outstanding. |
| 593 | */ |
| 594 | sc->reqcnt[periph->periph_target]++; |
| 595 | if (((sc->reqcnt[periph->periph_target] > 0) && |
| 596 | (sc->reqcnt[periph->periph_target] % 255) == 0) || |
| 597 | xs->bp == NULL || (xs->bp->b_flags & B_ASYNC) == 0) { |
| 598 | ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; |
| 599 | } else { |
| 600 | ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; |
| 601 | } |
| 602 | |
| 603 | if (xs->datalen) { |
| 604 | /* |
| 605 | * Map the DMA transfer. |
| 606 | */ |
| 607 | #ifdef TFS |
| 608 | if (flags & SCSI_DATA_UIO) { |
| 609 | error = bus_dmamap_load_uio(dmat, |
| 610 | ccb->dmamap_xfer, (struct uio *) xs->data, |
| 611 | ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : |
| 612 | BUS_DMA_WAITOK) | BUS_DMA_STREAMING | |
| 613 | ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : |
| 614 | BUS_DMA_WRITE)); |
| 615 | } else |
| 616 | #endif /* TFS */ |
| 617 | { |
| 618 | error = bus_dmamap_load(dmat, ccb->dmamap_xfer, |
| 619 | xs->data, xs->datalen, NULL, |
| 620 | ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : |
| 621 | BUS_DMA_WAITOK) | BUS_DMA_STREAMING | |
| 622 | ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : |
| 623 | BUS_DMA_WRITE)); |
| 624 | } |
| 625 | |
| 626 | switch (error) { |
| 627 | case 0: |
| 628 | break; |
| 629 | |
| 630 | |
| 631 | case ENOMEM: |
| 632 | case EAGAIN: |
| 633 | xs->error = XS_RESOURCE_SHORTAGE; |
| 634 | goto out_bad; |
| 635 | |
| 636 | default: |
| 637 | xs->error = XS_DRIVER_STUFFUP; |
| 638 | if (error == EFBIG) { |
| 639 | aprint_error_dev(sc->sc_dev, |
| 640 | "adv_scsi_cmd, more than %d" |
| 641 | " DMA segments\n" , |
| 642 | ASC_MAX_SG_LIST); |
| 643 | } else { |
| 644 | aprint_error_dev(sc->sc_dev, |
| 645 | "adv_scsi_cmd, error %d" |
| 646 | " loading DMA map\n" , error); |
| 647 | } |
| 648 | |
| 649 | out_bad: |
| 650 | adv_free_ccb(sc, ccb); |
| 651 | scsipi_done(xs); |
| 652 | return; |
| 653 | } |
| 654 | bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, |
| 655 | ccb->dmamap_xfer->dm_mapsize, |
| 656 | (flags & XS_CTL_DATA_IN) ? |
| 657 | BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); |
| 658 | |
| 659 | memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); |
| 660 | |
| 661 | for (nsegs = 0; |
| 662 | nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { |
| 663 | ccb->sghead.sg_list[nsegs].addr = |
| 664 | ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; |
| 665 | ccb->sghead.sg_list[nsegs].bytes = |
| 666 | ccb->dmamap_xfer->dm_segs[nsegs].ds_len; |
| 667 | } |
| 668 | |
| 669 | ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = |
| 670 | ccb->dmamap_xfer->dm_nsegs; |
| 671 | |
| 672 | ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; |
| 673 | ccb->scsiq.sg_head = &ccb->sghead; |
| 674 | ccb->scsiq.q1.data_addr = 0; |
| 675 | ccb->scsiq.q1.data_cnt = 0; |
| 676 | } else { |
| 677 | /* |
| 678 | * No data xfer, use non S/G values. |
| 679 | */ |
| 680 | ccb->scsiq.q1.data_addr = 0; |
| 681 | ccb->scsiq.q1.data_cnt = 0; |
| 682 | } |
| 683 | |
| 684 | #ifdef ASC_DEBUG |
| 685 | printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX\n" , |
| 686 | periph->periph_target, |
| 687 | periph->periph_lun, xs->cmd->opcode, |
| 688 | (unsigned long)ccb); |
| 689 | #endif |
| 690 | s = splbio(); |
| 691 | adv_queue_ccb(sc, ccb); |
| 692 | splx(s); |
| 693 | |
| 694 | if ((flags & XS_CTL_POLL) == 0) |
| 695 | return; |
| 696 | |
| 697 | /* Not allowed to use interrupts, poll for completion. */ |
| 698 | if (adv_poll(sc, xs, ccb->timeout)) { |
| 699 | adv_timeout(ccb); |
| 700 | if (adv_poll(sc, xs, ccb->timeout)) |
| 701 | adv_timeout(ccb); |
| 702 | } |
| 703 | return; |
| 704 | |
| 705 | case ADAPTER_REQ_GROW_RESOURCES: |
| 706 | /* XXX Not supported. */ |
| 707 | return; |
| 708 | |
| 709 | case ADAPTER_REQ_SET_XFER_MODE: |
| 710 | { |
| 711 | /* |
| 712 | * We can't really set the mode, but we know how to |
| 713 | * query what the firmware negotiated. |
| 714 | */ |
| 715 | struct scsipi_xfer_mode *xm = arg; |
| 716 | u_int8_t sdtr_data; |
| 717 | ASC_SCSI_BIT_ID_TYPE tid_bit; |
| 718 | |
| 719 | tid_bit = ASC_TIX_TO_TARGET_ID(xm->xm_target); |
| 720 | |
| 721 | xm->xm_mode = 0; |
| 722 | xm->xm_period = 0; |
| 723 | xm->xm_offset = 0; |
| 724 | |
| 725 | if (sc->init_sdtr & tid_bit) { |
| 726 | xm->xm_mode |= PERIPH_CAP_SYNC; |
| 727 | sdtr_data = sc->sdtr_data[xm->xm_target]; |
| 728 | xm->xm_period = |
| 729 | sc->sdtr_period_tbl[(sdtr_data >> 4) & |
| 730 | (sc->max_sdtr_index - 1)]; |
| 731 | xm->xm_offset = sdtr_data & ASC_SYN_MAX_OFFSET; |
| 732 | } |
| 733 | |
| 734 | if (sc->use_tagged_qng & tid_bit) |
| 735 | xm->xm_mode |= PERIPH_CAP_TQING; |
| 736 | |
| 737 | scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); |
| 738 | return; |
| 739 | } |
| 740 | } |
| 741 | } |
| 742 | |
| 743 | int |
| 744 | adv_intr(void *arg) |
| 745 | { |
| 746 | ASC_SOFTC *sc = arg; |
| 747 | |
| 748 | #ifdef ASC_DEBUG |
| 749 | int int_pend = FALSE; |
| 750 | |
| 751 | if (ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) { |
| 752 | int_pend = TRUE; |
| 753 | printf("ISR - " ); |
| 754 | } |
| 755 | #endif |
| 756 | AscISR(sc); |
| 757 | #ifdef ASC_DEBUG |
| 758 | if(int_pend) |
| 759 | printf("\n" ); |
| 760 | #endif |
| 761 | |
| 762 | return (1); |
| 763 | } |
| 764 | |
| 765 | |
| 766 | /* |
| 767 | * Poll a particular unit, looking for a particular xs |
| 768 | */ |
| 769 | static int |
| 770 | adv_poll(ASC_SOFTC *sc, struct scsipi_xfer *xs, int count) |
| 771 | { |
| 772 | |
| 773 | /* timeouts are in msec, so we loop in 1000 usec cycles */ |
| 774 | while (count) { |
| 775 | adv_intr(sc); |
| 776 | if (xs->xs_status & XS_STS_DONE) |
| 777 | return (0); |
| 778 | delay(1000); /* only happens in boot so ok */ |
| 779 | count--; |
| 780 | } |
| 781 | return (1); |
| 782 | } |
| 783 | |
| 784 | |
| 785 | static void |
| 786 | adv_timeout(void *arg) |
| 787 | { |
| 788 | ADV_CCB *ccb = arg; |
| 789 | struct scsipi_xfer *xs = ccb->xs; |
| 790 | struct scsipi_periph *periph = xs->xs_periph; |
| 791 | ASC_SOFTC *sc = |
| 792 | device_private(periph->periph_channel->chan_adapter->adapt_dev); |
| 793 | int s; |
| 794 | |
| 795 | scsipi_printaddr(periph); |
| 796 | printf("timed out" ); |
| 797 | |
| 798 | s = splbio(); |
| 799 | |
| 800 | /* |
| 801 | * If it has been through before, then a previous abort has failed, |
| 802 | * don't try abort again, reset the bus instead. |
| 803 | */ |
| 804 | if (ccb->flags & CCB_ABORT) { |
| 805 | /* abort timed out */ |
| 806 | printf(" AGAIN. Resetting Bus\n" ); |
| 807 | /* Lets try resetting the bus! */ |
| 808 | if (AscResetBus(sc) == ASC_ERROR) { |
| 809 | ccb->timeout = sc->scsi_reset_wait; |
| 810 | adv_queue_ccb(sc, ccb); |
| 811 | } |
| 812 | } else { |
| 813 | /* abort the operation that has timed out */ |
| 814 | printf("\n" ); |
| 815 | AscAbortCCB(sc, ccb); |
| 816 | ccb->xs->error = XS_TIMEOUT; |
| 817 | ccb->timeout = ADV_ABORT_TIMEOUT; |
| 818 | ccb->flags |= CCB_ABORT; |
| 819 | adv_queue_ccb(sc, ccb); |
| 820 | } |
| 821 | |
| 822 | splx(s); |
| 823 | } |
| 824 | |
| 825 | |
| 826 | static void |
| 827 | adv_watchdog(void *arg) |
| 828 | { |
| 829 | ADV_CCB *ccb = arg; |
| 830 | struct scsipi_xfer *xs = ccb->xs; |
| 831 | struct scsipi_periph *periph = xs->xs_periph; |
| 832 | ASC_SOFTC *sc = |
| 833 | device_private(periph->periph_channel->chan_adapter->adapt_dev); |
| 834 | int s; |
| 835 | |
| 836 | s = splbio(); |
| 837 | |
| 838 | ccb->flags &= ~CCB_WATCHDOG; |
| 839 | adv_start_ccbs(sc); |
| 840 | |
| 841 | splx(s); |
| 842 | } |
| 843 | |
| 844 | |
| 845 | /******************************************************************************/ |
| 846 | /* NARROW boards Interrupt callbacks */ |
| 847 | /******************************************************************************/ |
| 848 | |
| 849 | |
| 850 | /* |
| 851 | * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() |
| 852 | * |
| 853 | * Interrupt callback function for the Narrow SCSI Asc Library. |
| 854 | */ |
| 855 | static void |
| 856 | adv_narrow_isr_callback(ASC_SOFTC *sc, ASC_QDONE_INFO *qdonep) |
| 857 | { |
| 858 | bus_dma_tag_t dmat = sc->sc_dmat; |
| 859 | ADV_CCB *ccb; |
| 860 | struct scsipi_xfer *xs; |
| 861 | struct scsi_sense_data *s1, *s2; |
| 862 | |
| 863 | |
| 864 | ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); |
| 865 | xs = ccb->xs; |
| 866 | |
| 867 | #ifdef ASC_DEBUG |
| 868 | printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, " , |
| 869 | (unsigned long)ccb, |
| 870 | xs->xs_periph->periph_target, |
| 871 | xs->xs_periph->periph_lun, xs->cmd->opcode); |
| 872 | #endif |
| 873 | callout_stop(&ccb->xs->xs_callout); |
| 874 | |
| 875 | /* |
| 876 | * If we were a data transfer, unload the map that described |
| 877 | * the data buffer. |
| 878 | */ |
| 879 | if (xs->datalen) { |
| 880 | bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, |
| 881 | ccb->dmamap_xfer->dm_mapsize, |
| 882 | (xs->xs_control & XS_CTL_DATA_IN) ? |
| 883 | BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); |
| 884 | bus_dmamap_unload(dmat, ccb->dmamap_xfer); |
| 885 | } |
| 886 | if ((ccb->flags & CCB_ALLOC) == 0) { |
| 887 | aprint_error_dev(sc->sc_dev, "exiting ccb not allocated!\n" ); |
| 888 | Debugger(); |
| 889 | return; |
| 890 | } |
| 891 | /* |
| 892 | * 'qdonep' contains the command's ending status. |
| 893 | */ |
| 894 | #ifdef ASC_DEBUG |
| 895 | printf("d_s=%d, h_s=%d" , qdonep->d3.done_stat, qdonep->d3.host_stat); |
| 896 | #endif |
| 897 | switch (qdonep->d3.done_stat) { |
| 898 | case ASC_QD_NO_ERROR: |
| 899 | switch (qdonep->d3.host_stat) { |
| 900 | case ASC_QHSTA_NO_ERROR: |
| 901 | xs->error = XS_NOERROR; |
| 902 | xs->resid = 0; |
| 903 | break; |
| 904 | |
| 905 | default: |
| 906 | /* QHSTA error occurred */ |
| 907 | xs->error = XS_DRIVER_STUFFUP; |
| 908 | break; |
| 909 | } |
| 910 | |
| 911 | /* |
| 912 | * If an INQUIRY command completed successfully, then call |
| 913 | * the AscInquiryHandling() function to patch bugged boards. |
| 914 | */ |
| 915 | if ((xs->cmd->opcode == SCSICMD_Inquiry) && |
| 916 | (xs->xs_periph->periph_lun == 0) && |
| 917 | (xs->datalen - qdonep->remain_bytes) >= 8) { |
| 918 | AscInquiryHandling(sc, |
| 919 | xs->xs_periph->periph_target & 0x7, |
| 920 | (ASC_SCSI_INQUIRY *) xs->data); |
| 921 | } |
| 922 | break; |
| 923 | |
| 924 | case ASC_QD_WITH_ERROR: |
| 925 | switch (qdonep->d3.host_stat) { |
| 926 | case ASC_QHSTA_NO_ERROR: |
| 927 | if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { |
| 928 | s1 = &ccb->scsi_sense; |
| 929 | s2 = &xs->sense.scsi_sense; |
| 930 | *s2 = *s1; |
| 931 | xs->error = XS_SENSE; |
| 932 | } else { |
| 933 | xs->error = XS_DRIVER_STUFFUP; |
| 934 | } |
| 935 | break; |
| 936 | |
| 937 | case ASC_QHSTA_M_SEL_TIMEOUT: |
| 938 | xs->error = XS_SELTIMEOUT; |
| 939 | break; |
| 940 | |
| 941 | default: |
| 942 | /* QHSTA error occurred */ |
| 943 | xs->error = XS_DRIVER_STUFFUP; |
| 944 | break; |
| 945 | } |
| 946 | break; |
| 947 | |
| 948 | case ASC_QD_ABORTED_BY_HOST: |
| 949 | default: |
| 950 | xs->error = XS_DRIVER_STUFFUP; |
| 951 | break; |
| 952 | } |
| 953 | |
| 954 | adv_free_ccb(sc, ccb); |
| 955 | scsipi_done(xs); |
| 956 | } |
| 957 | |