| 1 | /* $NetBSD: cac.c,v 1.57 2016/09/27 03:33:32 pgoyette Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2000, 2006, 2007 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Andrew Doran. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * Driver for Compaq array controllers. |
| 34 | */ |
| 35 | |
| 36 | #include <sys/cdefs.h> |
| 37 | __KERNEL_RCSID(0, "$NetBSD: cac.c,v 1.57 2016/09/27 03:33:32 pgoyette Exp $" ); |
| 38 | |
| 39 | #if defined(_KERNEL_OPT) |
| 40 | #include "bio.h" |
| 41 | #endif |
| 42 | |
| 43 | #include <sys/param.h> |
| 44 | #include <sys/systm.h> |
| 45 | #include <sys/kernel.h> |
| 46 | #include <sys/device.h> |
| 47 | #include <sys/queue.h> |
| 48 | #include <sys/proc.h> |
| 49 | #include <sys/buf.h> |
| 50 | #include <sys/endian.h> |
| 51 | #include <sys/malloc.h> |
| 52 | #include <sys/pool.h> |
| 53 | #include <sys/module.h> |
| 54 | #include <sys/bswap.h> |
| 55 | #include <sys/bus.h> |
| 56 | |
| 57 | #include <dev/ic/cacreg.h> |
| 58 | #include <dev/ic/cacvar.h> |
| 59 | |
| 60 | #if NBIO > 0 |
| 61 | #include <dev/biovar.h> |
| 62 | #endif /* NBIO > 0 */ |
| 63 | |
| 64 | #include "locators.h" |
| 65 | |
| 66 | static struct cac_ccb *cac_ccb_alloc(struct cac_softc *, int); |
| 67 | static void cac_ccb_done(struct cac_softc *, struct cac_ccb *); |
| 68 | static void cac_ccb_free(struct cac_softc *, struct cac_ccb *); |
| 69 | static int cac_ccb_poll(struct cac_softc *, struct cac_ccb *, int); |
| 70 | static int cac_ccb_start(struct cac_softc *, struct cac_ccb *); |
| 71 | static int cac_print(void *, const char *); |
| 72 | static void cac_shutdown(void *); |
| 73 | |
| 74 | static struct cac_ccb *cac_l0_completed(struct cac_softc *); |
| 75 | static int cac_l0_fifo_full(struct cac_softc *); |
| 76 | static void cac_l0_intr_enable(struct cac_softc *, int); |
| 77 | static int cac_l0_intr_pending(struct cac_softc *); |
| 78 | static void cac_l0_submit(struct cac_softc *, struct cac_ccb *); |
| 79 | |
| 80 | static void *cac_sdh; /* shutdown hook */ |
| 81 | |
| 82 | #if NBIO > 0 |
| 83 | int cac_ioctl(device_t, u_long, void *); |
| 84 | int cac_ioctl_vol(struct cac_softc *, struct bioc_vol *); |
| 85 | int cac_create_sensors(struct cac_softc *); |
| 86 | void cac_sensor_refresh(struct sysmon_envsys *, envsys_data_t *); |
| 87 | #endif /* NBIO > 0 */ |
| 88 | |
| 89 | const struct cac_linkage cac_l0 = { |
| 90 | cac_l0_completed, |
| 91 | cac_l0_fifo_full, |
| 92 | cac_l0_intr_enable, |
| 93 | cac_l0_intr_pending, |
| 94 | cac_l0_submit |
| 95 | }; |
| 96 | |
| 97 | /* |
| 98 | * Initialise our interface to the controller. |
| 99 | */ |
| 100 | int |
| 101 | cac_init(struct cac_softc *sc, const char *intrstr, int startfw) |
| 102 | { |
| 103 | struct cac_controller_info cinfo; |
| 104 | int error, rseg, size, i; |
| 105 | bus_dma_segment_t seg; |
| 106 | struct cac_ccb *ccb; |
| 107 | char firm[8]; |
| 108 | |
| 109 | if (intrstr != NULL) |
| 110 | aprint_normal_dev(sc->sc_dev, "interrupting at %s\n" , intrstr); |
| 111 | |
| 112 | SIMPLEQ_INIT(&sc->sc_ccb_free); |
| 113 | SIMPLEQ_INIT(&sc->sc_ccb_queue); |
| 114 | mutex_init(&sc->sc_mutex, MUTEX_DEFAULT, IPL_VM); |
| 115 | cv_init(&sc->sc_ccb_cv, "cacccb" ); |
| 116 | |
| 117 | size = sizeof(struct cac_ccb) * CAC_MAX_CCBS; |
| 118 | |
| 119 | if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, |
| 120 | &rseg, BUS_DMA_NOWAIT)) != 0) { |
| 121 | aprint_error_dev(sc->sc_dev, "unable to allocate CCBs, error = %d\n" , |
| 122 | error); |
| 123 | return (-1); |
| 124 | } |
| 125 | |
| 126 | if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, size, |
| 127 | (void **)&sc->sc_ccbs, |
| 128 | BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { |
| 129 | aprint_error_dev(sc->sc_dev, "unable to map CCBs, error = %d\n" , |
| 130 | error); |
| 131 | return (-1); |
| 132 | } |
| 133 | |
| 134 | if ((error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, |
| 135 | BUS_DMA_NOWAIT, &sc->sc_dmamap)) != 0) { |
| 136 | aprint_error_dev(sc->sc_dev, "unable to create CCB DMA map, error = %d\n" , |
| 137 | error); |
| 138 | return (-1); |
| 139 | } |
| 140 | |
| 141 | if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap, sc->sc_ccbs, |
| 142 | size, NULL, BUS_DMA_NOWAIT)) != 0) { |
| 143 | aprint_error_dev(sc->sc_dev, "unable to load CCB DMA map, error = %d\n" , |
| 144 | error); |
| 145 | return (-1); |
| 146 | } |
| 147 | |
| 148 | sc->sc_ccbs_paddr = sc->sc_dmamap->dm_segs[0].ds_addr; |
| 149 | memset(sc->sc_ccbs, 0, size); |
| 150 | ccb = (struct cac_ccb *)sc->sc_ccbs; |
| 151 | |
| 152 | for (i = 0; i < CAC_MAX_CCBS; i++, ccb++) { |
| 153 | /* Create the DMA map for this CCB's data */ |
| 154 | error = bus_dmamap_create(sc->sc_dmat, CAC_MAX_XFER, |
| 155 | CAC_SG_SIZE, CAC_MAX_XFER, 0, |
| 156 | BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, |
| 157 | &ccb->ccb_dmamap_xfer); |
| 158 | |
| 159 | if (error) { |
| 160 | aprint_error_dev(sc->sc_dev, "can't create ccb dmamap (%d)\n" , |
| 161 | error); |
| 162 | break; |
| 163 | } |
| 164 | |
| 165 | ccb->ccb_flags = 0; |
| 166 | ccb->ccb_paddr = sc->sc_ccbs_paddr + i * sizeof(struct cac_ccb); |
| 167 | SIMPLEQ_INSERT_TAIL(&sc->sc_ccb_free, ccb, ccb_chain); |
| 168 | } |
| 169 | |
| 170 | /* Start firmware background tasks, if needed. */ |
| 171 | if (startfw) { |
| 172 | if (cac_cmd(sc, CAC_CMD_START_FIRMWARE, &cinfo, sizeof(cinfo), |
| 173 | 0, 0, CAC_CCB_DATA_IN, NULL)) { |
| 174 | aprint_error_dev(sc->sc_dev, "CAC_CMD_START_FIRMWARE failed\n" ); |
| 175 | return (-1); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | if (cac_cmd(sc, CAC_CMD_GET_CTRL_INFO, &cinfo, sizeof(cinfo), 0, 0, |
| 180 | CAC_CCB_DATA_IN, NULL)) { |
| 181 | aprint_error_dev(sc->sc_dev, "CAC_CMD_GET_CTRL_INFO failed\n" ); |
| 182 | return (-1); |
| 183 | } |
| 184 | |
| 185 | strlcpy(firm, cinfo.firm_rev, 4+1); |
| 186 | printf("%s: %d channels, firmware <%s>\n" , device_xname(sc->sc_dev), |
| 187 | cinfo.scsi_chips, firm); |
| 188 | |
| 189 | /* Limit number of units to size of our sc_unitmask */ |
| 190 | sc->sc_nunits = cinfo.num_drvs; |
| 191 | if (sc->sc_nunits > sizeof(sc->sc_unitmask) * NBBY) |
| 192 | sc->sc_nunits = sizeof(sc->sc_unitmask) * NBBY; |
| 193 | |
| 194 | /* Attach our units */ |
| 195 | sc->sc_unitmask = 0; |
| 196 | cac_rescan(sc->sc_dev, "cac" , 0); |
| 197 | |
| 198 | /* Set our `shutdownhook' before we start any device activity. */ |
| 199 | if (cac_sdh == NULL) |
| 200 | cac_sdh = shutdownhook_establish(cac_shutdown, NULL); |
| 201 | |
| 202 | mutex_enter(&sc->sc_mutex); |
| 203 | (*sc->sc_cl.cl_intr_enable)(sc, CAC_INTR_ENABLE); |
| 204 | mutex_exit(&sc->sc_mutex); |
| 205 | |
| 206 | #if NBIO > 0 |
| 207 | if (bio_register(sc->sc_dev, cac_ioctl) != 0) |
| 208 | aprint_error_dev(sc->sc_dev, "controller registration failed" ); |
| 209 | else |
| 210 | sc->sc_ioctl = cac_ioctl; |
| 211 | if (cac_create_sensors(sc) != 0) |
| 212 | aprint_error_dev(sc->sc_dev, "unable to create sensors\n" ); |
| 213 | #endif |
| 214 | |
| 215 | return (0); |
| 216 | } |
| 217 | |
| 218 | int |
| 219 | cac_rescan(device_t self, const char *attr, const int *flags) |
| 220 | { |
| 221 | struct cac_softc *sc; |
| 222 | struct cac_attach_args caca; |
| 223 | int locs[CACCF_NLOCS]; |
| 224 | int i; |
| 225 | |
| 226 | sc = device_private(self); |
| 227 | for (i = 0; i < sc->sc_nunits; i++) { |
| 228 | if (sc->sc_unitmask & (1 << i)) |
| 229 | continue; |
| 230 | caca.caca_unit = i; |
| 231 | |
| 232 | locs[CACCF_UNIT] = i; |
| 233 | |
| 234 | if (config_found_sm_loc(self, attr, locs, &caca, cac_print, |
| 235 | config_stdsubmatch)) |
| 236 | sc->sc_unitmask |= 1 << i; |
| 237 | } |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | /* |
| 242 | * Shut down all `cac' controllers. |
| 243 | */ |
| 244 | static void |
| 245 | cac_shutdown(void *cookie) |
| 246 | { |
| 247 | extern struct cfdriver cac_cd; |
| 248 | struct cac_softc *sc; |
| 249 | u_int8_t tbuf[512]; |
| 250 | int i; |
| 251 | |
| 252 | for (i = 0; i < cac_cd.cd_ndevs; i++) { |
| 253 | if ((sc = device_lookup_private(&cac_cd, i)) == NULL) |
| 254 | continue; |
| 255 | memset(tbuf, 0, sizeof(tbuf)); |
| 256 | tbuf[0] = 1; |
| 257 | cac_cmd(sc, CAC_CMD_FLUSH_CACHE, tbuf, sizeof(tbuf), 0, 0, |
| 258 | CAC_CCB_DATA_OUT, NULL); |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | /* |
| 263 | * Print autoconfiguration message for a sub-device. |
| 264 | */ |
| 265 | static int |
| 266 | cac_print(void *aux, const char *pnp) |
| 267 | { |
| 268 | struct cac_attach_args *caca; |
| 269 | |
| 270 | caca = (struct cac_attach_args *)aux; |
| 271 | |
| 272 | if (pnp != NULL) |
| 273 | aprint_normal("block device at %s" , pnp); |
| 274 | aprint_normal(" unit %d" , caca->caca_unit); |
| 275 | return (UNCONF); |
| 276 | } |
| 277 | |
| 278 | /* |
| 279 | * Handle an interrupt from the controller: process finished CCBs and |
| 280 | * dequeue any waiting CCBs. |
| 281 | */ |
| 282 | int |
| 283 | cac_intr(void *cookie) |
| 284 | { |
| 285 | struct cac_softc *sc; |
| 286 | struct cac_ccb *ccb; |
| 287 | int rv; |
| 288 | |
| 289 | sc = cookie; |
| 290 | |
| 291 | mutex_enter(&sc->sc_mutex); |
| 292 | |
| 293 | if ((*sc->sc_cl.cl_intr_pending)(sc)) { |
| 294 | while ((ccb = (*sc->sc_cl.cl_completed)(sc)) != NULL) { |
| 295 | cac_ccb_done(sc, ccb); |
| 296 | cac_ccb_start(sc, NULL); |
| 297 | } |
| 298 | rv = 1; |
| 299 | } else |
| 300 | rv = 0; |
| 301 | |
| 302 | mutex_exit(&sc->sc_mutex); |
| 303 | |
| 304 | return (rv); |
| 305 | } |
| 306 | |
| 307 | /* |
| 308 | * Execute a [polled] command. |
| 309 | */ |
| 310 | int |
| 311 | cac_cmd(struct cac_softc *sc, int command, void *data, int datasize, |
| 312 | int drive, int blkno, int flags, struct cac_context *context) |
| 313 | { |
| 314 | struct cac_ccb *ccb; |
| 315 | struct cac_sgb *sgb; |
| 316 | int i, rv, size, nsegs; |
| 317 | |
| 318 | size = 0; |
| 319 | |
| 320 | if ((ccb = cac_ccb_alloc(sc, 1)) == NULL) { |
| 321 | aprint_error_dev(sc->sc_dev, "unable to alloc CCB" ); |
| 322 | return (EAGAIN); |
| 323 | } |
| 324 | |
| 325 | if ((flags & (CAC_CCB_DATA_IN | CAC_CCB_DATA_OUT)) != 0) { |
| 326 | bus_dmamap_load(sc->sc_dmat, ccb->ccb_dmamap_xfer, |
| 327 | (void *)data, datasize, NULL, BUS_DMA_NOWAIT | |
| 328 | BUS_DMA_STREAMING | ((flags & CAC_CCB_DATA_IN) ? |
| 329 | BUS_DMA_READ : BUS_DMA_WRITE)); |
| 330 | |
| 331 | bus_dmamap_sync(sc->sc_dmat, ccb->ccb_dmamap_xfer, 0, datasize, |
| 332 | (flags & CAC_CCB_DATA_IN) != 0 ? BUS_DMASYNC_PREREAD : |
| 333 | BUS_DMASYNC_PREWRITE); |
| 334 | |
| 335 | sgb = ccb->ccb_seg; |
| 336 | nsegs = min(ccb->ccb_dmamap_xfer->dm_nsegs, CAC_SG_SIZE); |
| 337 | |
| 338 | for (i = 0; i < nsegs; i++, sgb++) { |
| 339 | size += ccb->ccb_dmamap_xfer->dm_segs[i].ds_len; |
| 340 | sgb->length = |
| 341 | htole32(ccb->ccb_dmamap_xfer->dm_segs[i].ds_len); |
| 342 | sgb->addr = |
| 343 | htole32(ccb->ccb_dmamap_xfer->dm_segs[i].ds_addr); |
| 344 | } |
| 345 | } else { |
| 346 | size = datasize; |
| 347 | nsegs = 0; |
| 348 | } |
| 349 | |
| 350 | ccb->ccb_hdr.drive = drive; |
| 351 | ccb->ccb_hdr.priority = 0; |
| 352 | ccb->ccb_hdr.size = htole16((sizeof(struct cac_req) + |
| 353 | sizeof(struct cac_sgb) * CAC_SG_SIZE) >> 2); |
| 354 | |
| 355 | ccb->ccb_req.next = 0; |
| 356 | ccb->ccb_req.error = 0; |
| 357 | ccb->ccb_req.reserved = 0; |
| 358 | ccb->ccb_req.bcount = htole16(howmany(size, DEV_BSIZE)); |
| 359 | ccb->ccb_req.command = command; |
| 360 | ccb->ccb_req.sgcount = nsegs; |
| 361 | ccb->ccb_req.blkno = htole32(blkno); |
| 362 | |
| 363 | ccb->ccb_flags = flags; |
| 364 | ccb->ccb_datasize = size; |
| 365 | |
| 366 | mutex_enter(&sc->sc_mutex); |
| 367 | |
| 368 | if (context == NULL) { |
| 369 | memset(&ccb->ccb_context, 0, sizeof(struct cac_context)); |
| 370 | |
| 371 | /* Synchronous commands musn't wait. */ |
| 372 | if ((*sc->sc_cl.cl_fifo_full)(sc)) { |
| 373 | cac_ccb_free(sc, ccb); |
| 374 | rv = EAGAIN; |
| 375 | } else { |
| 376 | #ifdef DIAGNOSTIC |
| 377 | ccb->ccb_flags |= CAC_CCB_ACTIVE; |
| 378 | #endif |
| 379 | (*sc->sc_cl.cl_submit)(sc, ccb); |
| 380 | rv = cac_ccb_poll(sc, ccb, 2000); |
| 381 | cac_ccb_free(sc, ccb); |
| 382 | } |
| 383 | } else { |
| 384 | memcpy(&ccb->ccb_context, context, sizeof(struct cac_context)); |
| 385 | (void)cac_ccb_start(sc, ccb); |
| 386 | rv = 0; |
| 387 | } |
| 388 | |
| 389 | mutex_exit(&sc->sc_mutex); |
| 390 | return (rv); |
| 391 | } |
| 392 | |
| 393 | /* |
| 394 | * Wait for the specified CCB to complete. |
| 395 | */ |
| 396 | static int |
| 397 | cac_ccb_poll(struct cac_softc *sc, struct cac_ccb *wantccb, int timo) |
| 398 | { |
| 399 | struct cac_ccb *ccb; |
| 400 | |
| 401 | KASSERT(mutex_owned(&sc->sc_mutex)); |
| 402 | |
| 403 | timo *= 1000; |
| 404 | |
| 405 | do { |
| 406 | for (; timo != 0; timo--) { |
| 407 | ccb = (*sc->sc_cl.cl_completed)(sc); |
| 408 | if (ccb != NULL) |
| 409 | break; |
| 410 | DELAY(1); |
| 411 | } |
| 412 | |
| 413 | if (timo == 0) { |
| 414 | printf("%s: timeout\n" , device_xname(sc->sc_dev)); |
| 415 | return (EBUSY); |
| 416 | } |
| 417 | cac_ccb_done(sc, ccb); |
| 418 | } while (ccb != wantccb); |
| 419 | |
| 420 | return (0); |
| 421 | } |
| 422 | |
| 423 | /* |
| 424 | * Enqueue the specified command (if any) and attempt to start all enqueued |
| 425 | * commands. |
| 426 | */ |
| 427 | static int |
| 428 | cac_ccb_start(struct cac_softc *sc, struct cac_ccb *ccb) |
| 429 | { |
| 430 | |
| 431 | KASSERT(mutex_owned(&sc->sc_mutex)); |
| 432 | |
| 433 | if (ccb != NULL) |
| 434 | SIMPLEQ_INSERT_TAIL(&sc->sc_ccb_queue, ccb, ccb_chain); |
| 435 | |
| 436 | while ((ccb = SIMPLEQ_FIRST(&sc->sc_ccb_queue)) != NULL) { |
| 437 | if ((*sc->sc_cl.cl_fifo_full)(sc)) |
| 438 | return (EAGAIN); |
| 439 | SIMPLEQ_REMOVE_HEAD(&sc->sc_ccb_queue, ccb_chain); |
| 440 | #ifdef DIAGNOSTIC |
| 441 | ccb->ccb_flags |= CAC_CCB_ACTIVE; |
| 442 | #endif |
| 443 | (*sc->sc_cl.cl_submit)(sc, ccb); |
| 444 | } |
| 445 | |
| 446 | return (0); |
| 447 | } |
| 448 | |
| 449 | /* |
| 450 | * Process a finished CCB. |
| 451 | */ |
| 452 | static void |
| 453 | cac_ccb_done(struct cac_softc *sc, struct cac_ccb *ccb) |
| 454 | { |
| 455 | device_t dv; |
| 456 | void *context; |
| 457 | int error; |
| 458 | |
| 459 | error = 0; |
| 460 | |
| 461 | KASSERT(mutex_owned(&sc->sc_mutex)); |
| 462 | |
| 463 | #ifdef DIAGNOSTIC |
| 464 | if ((ccb->ccb_flags & CAC_CCB_ACTIVE) == 0) |
| 465 | panic("cac_ccb_done: CCB not active" ); |
| 466 | ccb->ccb_flags &= ~CAC_CCB_ACTIVE; |
| 467 | #endif |
| 468 | |
| 469 | if ((ccb->ccb_flags & (CAC_CCB_DATA_IN | CAC_CCB_DATA_OUT)) != 0) { |
| 470 | bus_dmamap_sync(sc->sc_dmat, ccb->ccb_dmamap_xfer, 0, |
| 471 | ccb->ccb_datasize, ccb->ccb_flags & CAC_CCB_DATA_IN ? |
| 472 | BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); |
| 473 | bus_dmamap_unload(sc->sc_dmat, ccb->ccb_dmamap_xfer); |
| 474 | } |
| 475 | |
| 476 | error = ccb->ccb_req.error; |
| 477 | if (ccb->ccb_context.cc_handler != NULL) { |
| 478 | dv = ccb->ccb_context.cc_dv; |
| 479 | context = ccb->ccb_context.cc_context; |
| 480 | cac_ccb_free(sc, ccb); |
| 481 | (*ccb->ccb_context.cc_handler)(dv, context, error); |
| 482 | } else { |
| 483 | if ((error & CAC_RET_SOFT_ERROR) != 0) |
| 484 | aprint_error_dev(sc->sc_dev, "soft error; array may be degraded\n" ); |
| 485 | if ((error & CAC_RET_HARD_ERROR) != 0) |
| 486 | aprint_error_dev(sc->sc_dev, "hard error\n" ); |
| 487 | if ((error & CAC_RET_CMD_REJECTED) != 0) { |
| 488 | error = 1; |
| 489 | aprint_error_dev(sc->sc_dev, "invalid request\n" ); |
| 490 | } |
| 491 | } |
| 492 | } |
| 493 | |
| 494 | /* |
| 495 | * Allocate a CCB. |
| 496 | */ |
| 497 | static struct cac_ccb * |
| 498 | cac_ccb_alloc(struct cac_softc *sc, int nosleep) |
| 499 | { |
| 500 | struct cac_ccb *ccb; |
| 501 | |
| 502 | mutex_enter(&sc->sc_mutex); |
| 503 | |
| 504 | for (;;) { |
| 505 | if ((ccb = SIMPLEQ_FIRST(&sc->sc_ccb_free)) != NULL) { |
| 506 | SIMPLEQ_REMOVE_HEAD(&sc->sc_ccb_free, ccb_chain); |
| 507 | break; |
| 508 | } |
| 509 | if (nosleep) { |
| 510 | ccb = NULL; |
| 511 | break; |
| 512 | } |
| 513 | cv_wait(&sc->sc_ccb_cv, &sc->sc_mutex); |
| 514 | } |
| 515 | |
| 516 | mutex_exit(&sc->sc_mutex); |
| 517 | return (ccb); |
| 518 | } |
| 519 | |
| 520 | /* |
| 521 | * Put a CCB onto the freelist. |
| 522 | */ |
| 523 | static void |
| 524 | cac_ccb_free(struct cac_softc *sc, struct cac_ccb *ccb) |
| 525 | { |
| 526 | |
| 527 | KASSERT(mutex_owned(&sc->sc_mutex)); |
| 528 | |
| 529 | ccb->ccb_flags = 0; |
| 530 | if (SIMPLEQ_EMPTY(&sc->sc_ccb_free)) |
| 531 | cv_signal(&sc->sc_ccb_cv); |
| 532 | SIMPLEQ_INSERT_HEAD(&sc->sc_ccb_free, ccb, ccb_chain); |
| 533 | } |
| 534 | |
| 535 | /* |
| 536 | * Board specific linkage shared between multiple bus types. |
| 537 | */ |
| 538 | |
| 539 | static int |
| 540 | cac_l0_fifo_full(struct cac_softc *sc) |
| 541 | { |
| 542 | |
| 543 | KASSERT(mutex_owned(&sc->sc_mutex)); |
| 544 | |
| 545 | return (cac_inl(sc, CAC_REG_CMD_FIFO) == 0); |
| 546 | } |
| 547 | |
| 548 | static void |
| 549 | cac_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) |
| 550 | { |
| 551 | |
| 552 | KASSERT(mutex_owned(&sc->sc_mutex)); |
| 553 | |
| 554 | bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, |
| 555 | (char *)ccb - (char *)sc->sc_ccbs, |
| 556 | sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); |
| 557 | cac_outl(sc, CAC_REG_CMD_FIFO, ccb->ccb_paddr); |
| 558 | } |
| 559 | |
| 560 | static struct cac_ccb * |
| 561 | cac_l0_completed(struct cac_softc *sc) |
| 562 | { |
| 563 | struct cac_ccb *ccb; |
| 564 | paddr_t off; |
| 565 | |
| 566 | KASSERT(mutex_owned(&sc->sc_mutex)); |
| 567 | |
| 568 | if ((off = cac_inl(sc, CAC_REG_DONE_FIFO)) == 0) |
| 569 | return (NULL); |
| 570 | |
| 571 | if ((off & 3) != 0) |
| 572 | aprint_error_dev(sc->sc_dev, "failed command list returned: %lx\n" , |
| 573 | (long)off); |
| 574 | |
| 575 | off = (off & ~3) - sc->sc_ccbs_paddr; |
| 576 | ccb = (struct cac_ccb *)((char *)sc->sc_ccbs + off); |
| 577 | |
| 578 | bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), |
| 579 | BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); |
| 580 | |
| 581 | if ((off & 3) != 0 && ccb->ccb_req.error == 0) |
| 582 | ccb->ccb_req.error = CAC_RET_CMD_REJECTED; |
| 583 | |
| 584 | return (ccb); |
| 585 | } |
| 586 | |
| 587 | static int |
| 588 | cac_l0_intr_pending(struct cac_softc *sc) |
| 589 | { |
| 590 | |
| 591 | KASSERT(mutex_owned(&sc->sc_mutex)); |
| 592 | |
| 593 | return (cac_inl(sc, CAC_REG_INTR_PENDING) & CAC_INTR_ENABLE); |
| 594 | } |
| 595 | |
| 596 | static void |
| 597 | cac_l0_intr_enable(struct cac_softc *sc, int state) |
| 598 | { |
| 599 | |
| 600 | KASSERT(mutex_owned(&sc->sc_mutex)); |
| 601 | |
| 602 | cac_outl(sc, CAC_REG_INTR_MASK, |
| 603 | state ? CAC_INTR_ENABLE : CAC_INTR_DISABLE); |
| 604 | } |
| 605 | |
| 606 | #if NBIO > 0 |
| 607 | const int cac_level[] = { 0, 4, 1, 5, 51, 7 }; |
| 608 | const int cac_stat[] = { BIOC_SVONLINE, BIOC_SVOFFLINE, BIOC_SVOFFLINE, |
| 609 | BIOC_SVDEGRADED, BIOC_SVREBUILD, BIOC_SVREBUILD, BIOC_SVDEGRADED, |
| 610 | BIOC_SVDEGRADED, BIOC_SVINVALID, BIOC_SVINVALID, BIOC_SVBUILDING, |
| 611 | BIOC_SVOFFLINE, BIOC_SVBUILDING }; |
| 612 | |
| 613 | int |
| 614 | cac_ioctl(device_t dev, u_long cmd, void *addr) |
| 615 | { |
| 616 | struct cac_softc *sc = device_private(dev); |
| 617 | struct bioc_inq *bi; |
| 618 | struct bioc_disk *bd; |
| 619 | cac_lock_t lock; |
| 620 | int error = 0; |
| 621 | |
| 622 | lock = CAC_LOCK(sc); |
| 623 | switch (cmd) { |
| 624 | case BIOCINQ: |
| 625 | bi = (struct bioc_inq *)addr; |
| 626 | strlcpy(bi->bi_dev, device_xname(sc->sc_dev), sizeof(bi->bi_dev)); |
| 627 | bi->bi_novol = sc->sc_nunits; |
| 628 | bi->bi_nodisk = 0; |
| 629 | break; |
| 630 | |
| 631 | case BIOCVOL: |
| 632 | error = cac_ioctl_vol(sc, (struct bioc_vol *)addr); |
| 633 | break; |
| 634 | |
| 635 | case BIOCDISK: |
| 636 | case BIOCDISK_NOVOL: |
| 637 | bd = (struct bioc_disk *)addr; |
| 638 | if (bd->bd_volid > sc->sc_nunits) { |
| 639 | error = EINVAL; |
| 640 | break; |
| 641 | } |
| 642 | /* No disk information yet */ |
| 643 | break; |
| 644 | |
| 645 | case BIOCBLINK: |
| 646 | case BIOCALARM: |
| 647 | case BIOCSETSTATE: |
| 648 | default: |
| 649 | error = EINVAL; |
| 650 | } |
| 651 | CAC_UNLOCK(sc, lock); |
| 652 | |
| 653 | return (error); |
| 654 | } |
| 655 | |
| 656 | int |
| 657 | cac_ioctl_vol(struct cac_softc *sc, struct bioc_vol *bv) |
| 658 | { |
| 659 | struct cac_drive_info dinfo; |
| 660 | struct cac_drive_status dstatus; |
| 661 | u_int32_t blks; |
| 662 | |
| 663 | if (bv->bv_volid > sc->sc_nunits) { |
| 664 | return EINVAL; |
| 665 | } |
| 666 | if (cac_cmd(sc, CAC_CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo), |
| 667 | bv->bv_volid, 0, CAC_CCB_DATA_IN, NULL)) { |
| 668 | return EIO; |
| 669 | } |
| 670 | if (cac_cmd(sc, CAC_CMD_SENSE_DRV_STATUS, &dstatus, sizeof(dstatus), |
| 671 | bv->bv_volid, 0, CAC_CCB_DATA_IN, NULL)) { |
| 672 | return EIO; |
| 673 | } |
| 674 | blks = CAC_GET2(dinfo.ncylinders) * CAC_GET1(dinfo.nheads) * |
| 675 | CAC_GET1(dinfo.nsectors); |
| 676 | bv->bv_size = (off_t)blks * CAC_GET2(dinfo.secsize); |
| 677 | bv->bv_level = cac_level[CAC_GET1(dinfo.mirror)]; /*XXX limit check */ |
| 678 | bv->bv_nodisk = 0; /* XXX */ |
| 679 | bv->bv_status = 0; /* XXX */ |
| 680 | bv->bv_percent = -1; |
| 681 | bv->bv_seconds = 0; |
| 682 | if (dstatus.stat < sizeof(cac_stat)/sizeof(cac_stat[0])) |
| 683 | bv->bv_status = cac_stat[dstatus.stat]; |
| 684 | if (bv->bv_status == BIOC_SVREBUILD || |
| 685 | bv->bv_status == BIOC_SVBUILDING) |
| 686 | bv->bv_percent = ((blks - CAC_GET4(dstatus.prog)) * 1000ULL) / |
| 687 | blks; |
| 688 | return 0; |
| 689 | } |
| 690 | |
| 691 | int |
| 692 | cac_create_sensors(struct cac_softc *sc) |
| 693 | { |
| 694 | int i; |
| 695 | int nsensors = sc->sc_nunits; |
| 696 | |
| 697 | sc->sc_sme = sysmon_envsys_create(); |
| 698 | sc->sc_sensor = malloc(sizeof(envsys_data_t) * nsensors, |
| 699 | M_DEVBUF, M_NOWAIT | M_ZERO); |
| 700 | if (sc->sc_sensor == NULL) { |
| 701 | aprint_error_dev(sc->sc_dev, "can't allocate envsys_data_t\n" ); |
| 702 | return(ENOMEM); |
| 703 | } |
| 704 | |
| 705 | for (i = 0; i < nsensors; i++) { |
| 706 | sc->sc_sensor[i].units = ENVSYS_DRIVE; |
| 707 | sc->sc_sensor[i].state = ENVSYS_SINVALID; |
| 708 | sc->sc_sensor[i].value_cur = ENVSYS_DRIVE_EMPTY; |
| 709 | /* Enable monitoring for drive state changes */ |
| 710 | sc->sc_sensor[i].flags |= ENVSYS_FMONSTCHANGED; |
| 711 | /* logical drives */ |
| 712 | snprintf(sc->sc_sensor[i].desc, |
| 713 | sizeof(sc->sc_sensor[i].desc), "%s:%d" , |
| 714 | device_xname(sc->sc_dev), i); |
| 715 | if (sysmon_envsys_sensor_attach(sc->sc_sme, |
| 716 | &sc->sc_sensor[i])) |
| 717 | goto out; |
| 718 | } |
| 719 | sc->sc_sme->sme_name = device_xname(sc->sc_dev); |
| 720 | sc->sc_sme->sme_cookie = sc; |
| 721 | sc->sc_sme->sme_refresh = cac_sensor_refresh; |
| 722 | if (sysmon_envsys_register(sc->sc_sme)) { |
| 723 | aprint_error_dev(sc->sc_dev, "unable to register with sysmon\n" ); |
| 724 | return(1); |
| 725 | } |
| 726 | return (0); |
| 727 | |
| 728 | out: |
| 729 | free(sc->sc_sensor, M_DEVBUF); |
| 730 | sysmon_envsys_destroy(sc->sc_sme); |
| 731 | return EINVAL; |
| 732 | } |
| 733 | |
| 734 | void |
| 735 | cac_sensor_refresh(struct sysmon_envsys *sme, envsys_data_t *edata) |
| 736 | { |
| 737 | struct cac_softc *sc = sme->sme_cookie; |
| 738 | struct bioc_vol bv; |
| 739 | int s; |
| 740 | |
| 741 | if (edata->sensor >= sc->sc_nunits) |
| 742 | return; |
| 743 | |
| 744 | memset(&bv, 0, sizeof(bv)); |
| 745 | bv.bv_volid = edata->sensor; |
| 746 | s = splbio(); |
| 747 | if (cac_ioctl_vol(sc, &bv)) |
| 748 | bv.bv_status = BIOC_SVINVALID; |
| 749 | splx(s); |
| 750 | |
| 751 | bio_vol_to_envsys(edata, &bv); |
| 752 | } |
| 753 | #endif /* NBIO > 0 */ |
| 754 | |
| 755 | MODULE(MODULE_CLASS_DRIVER, cac, NULL); |
| 756 | |
| 757 | #ifdef _MODULE |
| 758 | CFDRIVER_DECL(cac, DV_DISK, NULL); |
| 759 | #endif |
| 760 | |
| 761 | static int |
| 762 | cac_modcmd(modcmd_t cmd, void *opaque) |
| 763 | { |
| 764 | int error = 0; |
| 765 | |
| 766 | #ifdef _MODULE |
| 767 | switch (cmd) { |
| 768 | case MODULE_CMD_INIT: |
| 769 | error = config_cfdriver_attach(&cac_cd); |
| 770 | break; |
| 771 | case MODULE_CMD_FINI: |
| 772 | error = config_cfdriver_detach(&cac_cd); |
| 773 | break; |
| 774 | default: |
| 775 | error = ENOTTY; |
| 776 | break; |
| 777 | } |
| 778 | #endif |
| 779 | return error; |
| 780 | } |
| 781 | |