| 1 | /* $NetBSD: icp.c,v 1.31 2012/10/27 17:18:20 chs Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2002, 2003 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, and by Jason R. Thorpe of Wasabi Systems, Inc. |
| 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 | * Copyright (c) 1999, 2000 Niklas Hallqvist. All rights reserved. |
| 34 | * |
| 35 | * Redistribution and use in source and binary forms, with or without |
| 36 | * modification, are permitted provided that the following conditions |
| 37 | * are met: |
| 38 | * 1. Redistributions of source code must retain the above copyright |
| 39 | * notice, this list of conditions and the following disclaimer. |
| 40 | * 2. Redistributions in binary form must reproduce the above copyright |
| 41 | * notice, this list of conditions and the following disclaimer in the |
| 42 | * documentation and/or other materials provided with the distribution. |
| 43 | * 3. All advertising materials mentioning features or use of this software |
| 44 | * must display the following acknowledgement: |
| 45 | * This product includes software developed by Niklas Hallqvist. |
| 46 | * 4. The name of the author may not be used to endorse or promote products |
| 47 | * derived from this software without specific prior written permission. |
| 48 | * |
| 49 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 50 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 51 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 52 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 53 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 54 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 55 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 56 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 57 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 58 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 59 | * |
| 60 | * from OpenBSD: gdt_common.c,v 1.12 2001/07/04 06:43:18 niklas Exp |
| 61 | */ |
| 62 | |
| 63 | /* |
| 64 | * This driver would not have written if it was not for the hardware donations |
| 65 | * from both ICP-Vortex and Öko.neT. I want to thank them for their support. |
| 66 | * |
| 67 | * Re-worked for NetBSD by Andrew Doran. Test hardware kindly supplied by |
| 68 | * Intel. |
| 69 | * |
| 70 | * Support for the ICP-Vortex management tools added by |
| 71 | * Jason R. Thorpe of Wasabi Systems, Inc., based on code |
| 72 | * provided by Achim Leubner <achim.leubner@intel.com>. |
| 73 | * |
| 74 | * Additional support for dynamic rescan of cacheservice drives by |
| 75 | * Jason R. Thorpe of Wasabi Systems, Inc. |
| 76 | */ |
| 77 | |
| 78 | #include <sys/cdefs.h> |
| 79 | __KERNEL_RCSID(0, "$NetBSD: icp.c,v 1.31 2012/10/27 17:18:20 chs Exp $" ); |
| 80 | |
| 81 | #include <sys/param.h> |
| 82 | #include <sys/systm.h> |
| 83 | #include <sys/kernel.h> |
| 84 | #include <sys/device.h> |
| 85 | #include <sys/queue.h> |
| 86 | #include <sys/proc.h> |
| 87 | #include <sys/buf.h> |
| 88 | #include <sys/endian.h> |
| 89 | #include <sys/malloc.h> |
| 90 | #include <sys/disk.h> |
| 91 | |
| 92 | #include <sys/bswap.h> |
| 93 | #include <sys/bus.h> |
| 94 | |
| 95 | #include <dev/pci/pcireg.h> |
| 96 | #include <dev/pci/pcivar.h> |
| 97 | #include <dev/pci/pcidevs.h> |
| 98 | |
| 99 | #include <dev/ic/icpreg.h> |
| 100 | #include <dev/ic/icpvar.h> |
| 101 | |
| 102 | #include <dev/scsipi/scsipi_all.h> |
| 103 | #include <dev/scsipi/scsiconf.h> |
| 104 | |
| 105 | #include "locators.h" |
| 106 | |
| 107 | int icp_async_event(struct icp_softc *, int); |
| 108 | void icp_ccb_submit(struct icp_softc *icp, struct icp_ccb *ic); |
| 109 | void icp_chain(struct icp_softc *); |
| 110 | int icp_print(void *, const char *); |
| 111 | void icp_watchdog(void *); |
| 112 | void icp_ucmd_intr(struct icp_ccb *); |
| 113 | void icp_recompute_openings(struct icp_softc *); |
| 114 | |
| 115 | int icp_count; /* total # of controllers, for ioctl interface */ |
| 116 | |
| 117 | /* |
| 118 | * Statistics for the ioctl interface to query. |
| 119 | * |
| 120 | * XXX Global. They should probably be made per-controller |
| 121 | * XXX at some point. |
| 122 | */ |
| 123 | gdt_statist_t icp_stats; |
| 124 | |
| 125 | int |
| 126 | icp_init(struct icp_softc *icp, const char *intrstr) |
| 127 | { |
| 128 | struct icp_attach_args icpa; |
| 129 | struct icp_binfo binfo; |
| 130 | struct icp_ccb *ic; |
| 131 | u_int16_t cdev_cnt; |
| 132 | int i, j, state, feat, nsegs, rv; |
| 133 | int locs[ICPCF_NLOCS]; |
| 134 | |
| 135 | state = 0; |
| 136 | |
| 137 | if (intrstr != NULL) |
| 138 | aprint_normal_dev(icp->icp_dv, "interrupting at %s\n" , |
| 139 | intrstr); |
| 140 | |
| 141 | SIMPLEQ_INIT(&icp->icp_ccb_queue); |
| 142 | SIMPLEQ_INIT(&icp->icp_ccb_freelist); |
| 143 | SIMPLEQ_INIT(&icp->icp_ucmd_queue); |
| 144 | callout_init(&icp->icp_wdog_callout, 0); |
| 145 | |
| 146 | /* |
| 147 | * Allocate a scratch area. |
| 148 | */ |
| 149 | if (bus_dmamap_create(icp->icp_dmat, ICP_SCRATCH_SIZE, 1, |
| 150 | ICP_SCRATCH_SIZE, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, |
| 151 | &icp->icp_scr_dmamap) != 0) { |
| 152 | aprint_error_dev(icp->icp_dv, "cannot create scratch dmamap\n" ); |
| 153 | return (1); |
| 154 | } |
| 155 | state++; |
| 156 | |
| 157 | if (bus_dmamem_alloc(icp->icp_dmat, ICP_SCRATCH_SIZE, PAGE_SIZE, 0, |
| 158 | icp->icp_scr_seg, 1, &nsegs, BUS_DMA_NOWAIT) != 0) { |
| 159 | aprint_error_dev(icp->icp_dv, "cannot alloc scratch dmamem\n" ); |
| 160 | goto bail_out; |
| 161 | } |
| 162 | state++; |
| 163 | |
| 164 | if (bus_dmamem_map(icp->icp_dmat, icp->icp_scr_seg, nsegs, |
| 165 | ICP_SCRATCH_SIZE, &icp->icp_scr, 0)) { |
| 166 | aprint_error_dev(icp->icp_dv, "cannot map scratch dmamem\n" ); |
| 167 | goto bail_out; |
| 168 | } |
| 169 | state++; |
| 170 | |
| 171 | if (bus_dmamap_load(icp->icp_dmat, icp->icp_scr_dmamap, icp->icp_scr, |
| 172 | ICP_SCRATCH_SIZE, NULL, BUS_DMA_NOWAIT)) { |
| 173 | aprint_error_dev(icp->icp_dv, "cannot load scratch dmamap\n" ); |
| 174 | goto bail_out; |
| 175 | } |
| 176 | state++; |
| 177 | |
| 178 | /* |
| 179 | * Allocate and initialize the command control blocks. |
| 180 | */ |
| 181 | ic = malloc(sizeof(*ic) * ICP_NCCBS, M_DEVBUF, M_NOWAIT | M_ZERO); |
| 182 | if ((icp->icp_ccbs = ic) == NULL) { |
| 183 | aprint_error_dev(icp->icp_dv, "malloc() failed\n" ); |
| 184 | goto bail_out; |
| 185 | } |
| 186 | state++; |
| 187 | |
| 188 | for (i = 0; i < ICP_NCCBS; i++, ic++) { |
| 189 | /* |
| 190 | * The first two command indexes have special meanings, so |
| 191 | * we can't use them. |
| 192 | */ |
| 193 | ic->ic_ident = i + 2; |
| 194 | rv = bus_dmamap_create(icp->icp_dmat, ICP_MAX_XFER, |
| 195 | ICP_MAXSG, ICP_MAX_XFER, 0, |
| 196 | BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, |
| 197 | &ic->ic_xfer_map); |
| 198 | if (rv != 0) |
| 199 | break; |
| 200 | icp->icp_nccbs++; |
| 201 | icp_ccb_free(icp, ic); |
| 202 | } |
| 203 | #ifdef DIAGNOSTIC |
| 204 | if (icp->icp_nccbs != ICP_NCCBS) |
| 205 | aprint_error_dev(icp->icp_dv, "%d/%d CCBs usable\n" , |
| 206 | icp->icp_nccbs, ICP_NCCBS); |
| 207 | #endif |
| 208 | |
| 209 | /* |
| 210 | * Initalize the controller. |
| 211 | */ |
| 212 | if (!icp_cmd(icp, ICP_SCREENSERVICE, ICP_INIT, 0, 0, 0)) { |
| 213 | aprint_error_dev(icp->icp_dv, "screen service init error %d\n" , |
| 214 | icp->icp_status); |
| 215 | goto bail_out; |
| 216 | } |
| 217 | |
| 218 | if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_INIT, ICP_LINUX_OS, 0, 0)) { |
| 219 | aprint_error_dev(icp->icp_dv, "cache service init error %d\n" , |
| 220 | icp->icp_status); |
| 221 | goto bail_out; |
| 222 | } |
| 223 | |
| 224 | icp_cmd(icp, ICP_CACHESERVICE, ICP_UNFREEZE_IO, 0, 0, 0); |
| 225 | |
| 226 | if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_MOUNT, 0xffff, 1, 0)) { |
| 227 | aprint_error_dev(icp->icp_dv, "cache service mount error %d\n" , |
| 228 | icp->icp_status); |
| 229 | goto bail_out; |
| 230 | } |
| 231 | |
| 232 | if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_INIT, ICP_LINUX_OS, 0, 0)) { |
| 233 | aprint_error_dev(icp->icp_dv, "cache service post-mount init error %d\n" , |
| 234 | icp->icp_status); |
| 235 | goto bail_out; |
| 236 | } |
| 237 | cdev_cnt = (u_int16_t)icp->icp_info; |
| 238 | icp->icp_fw_vers = icp->icp_service; |
| 239 | |
| 240 | if (!icp_cmd(icp, ICP_SCSIRAWSERVICE, ICP_INIT, 0, 0, 0)) { |
| 241 | aprint_error_dev(icp->icp_dv, "raw service init error %d\n" , |
| 242 | icp->icp_status); |
| 243 | goto bail_out; |
| 244 | } |
| 245 | |
| 246 | /* |
| 247 | * Set/get raw service features (scatter/gather). |
| 248 | */ |
| 249 | feat = 0; |
| 250 | if (icp_cmd(icp, ICP_SCSIRAWSERVICE, ICP_SET_FEAT, ICP_SCATTER_GATHER, |
| 251 | 0, 0)) |
| 252 | if (icp_cmd(icp, ICP_SCSIRAWSERVICE, ICP_GET_FEAT, 0, 0, 0)) |
| 253 | feat = icp->icp_info; |
| 254 | |
| 255 | if ((feat & ICP_SCATTER_GATHER) == 0) { |
| 256 | #ifdef DIAGNOSTIC |
| 257 | aprint_normal_dev(icp->icp_dv, |
| 258 | "scatter/gather not supported (raw service)\n" ); |
| 259 | #endif |
| 260 | } else |
| 261 | icp->icp_features |= ICP_FEAT_RAWSERVICE; |
| 262 | |
| 263 | /* |
| 264 | * Set/get cache service features (scatter/gather). |
| 265 | */ |
| 266 | feat = 0; |
| 267 | if (icp_cmd(icp, ICP_CACHESERVICE, ICP_SET_FEAT, 0, |
| 268 | ICP_SCATTER_GATHER, 0)) |
| 269 | if (icp_cmd(icp, ICP_CACHESERVICE, ICP_GET_FEAT, 0, 0, 0)) |
| 270 | feat = icp->icp_info; |
| 271 | |
| 272 | if ((feat & ICP_SCATTER_GATHER) == 0) { |
| 273 | #ifdef DIAGNOSTIC |
| 274 | aprint_normal_dev(icp->icp_dv, |
| 275 | "scatter/gather not supported (cache service)\n" ); |
| 276 | #endif |
| 277 | } else |
| 278 | icp->icp_features |= ICP_FEAT_CACHESERVICE; |
| 279 | |
| 280 | /* |
| 281 | * Pull some information from the board and dump. |
| 282 | */ |
| 283 | if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL, ICP_BOARD_INFO, |
| 284 | ICP_INVALID_CHANNEL, sizeof(struct icp_binfo))) { |
| 285 | aprint_error_dev(icp->icp_dv, "unable to retrive board info\n" ); |
| 286 | goto bail_out; |
| 287 | } |
| 288 | memcpy(&binfo, icp->icp_scr, sizeof(binfo)); |
| 289 | |
| 290 | aprint_normal_dev(icp->icp_dv, |
| 291 | "model <%s>, firmware <%s>, %d channel(s), %dMB memory\n" , |
| 292 | binfo.bi_type_string, binfo.bi_raid_string, |
| 293 | binfo.bi_chan_count, le32toh(binfo.bi_memsize) >> 20); |
| 294 | |
| 295 | /* |
| 296 | * Determine the number of devices, and number of openings per |
| 297 | * device. |
| 298 | */ |
| 299 | if (icp->icp_features & ICP_FEAT_CACHESERVICE) { |
| 300 | for (j = 0; j < cdev_cnt && j < ICP_MAX_HDRIVES; j++) { |
| 301 | if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_INFO, j, 0, |
| 302 | 0)) |
| 303 | continue; |
| 304 | |
| 305 | icp->icp_cdr[j].cd_size = icp->icp_info; |
| 306 | if (icp->icp_cdr[j].cd_size != 0) |
| 307 | icp->icp_ndevs++; |
| 308 | |
| 309 | if (icp_cmd(icp, ICP_CACHESERVICE, ICP_DEVTYPE, j, 0, |
| 310 | 0)) |
| 311 | icp->icp_cdr[j].cd_type = icp->icp_info; |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | if (icp->icp_features & ICP_FEAT_RAWSERVICE) { |
| 316 | icp->icp_nchan = binfo.bi_chan_count; |
| 317 | icp->icp_ndevs += icp->icp_nchan; |
| 318 | } |
| 319 | |
| 320 | icp_recompute_openings(icp); |
| 321 | |
| 322 | /* |
| 323 | * Attach SCSI channels. |
| 324 | */ |
| 325 | if (icp->icp_features & ICP_FEAT_RAWSERVICE) { |
| 326 | struct icp_ioc_version *iv; |
| 327 | struct icp_rawioc *ri; |
| 328 | struct icp_getch *gc; |
| 329 | |
| 330 | iv = (struct icp_ioc_version *)icp->icp_scr; |
| 331 | iv->iv_version = htole32(ICP_IOC_NEWEST); |
| 332 | iv->iv_listents = ICP_MAXBUS; |
| 333 | iv->iv_firstchan = 0; |
| 334 | iv->iv_lastchan = ICP_MAXBUS - 1; |
| 335 | iv->iv_listoffset = htole32(sizeof(*iv)); |
| 336 | |
| 337 | if (icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL, |
| 338 | ICP_IOCHAN_RAW_DESC, ICP_INVALID_CHANNEL, |
| 339 | sizeof(*iv) + ICP_MAXBUS * sizeof(*ri))) { |
| 340 | ri = (struct icp_rawioc *)(iv + 1); |
| 341 | for (j = 0; j < binfo.bi_chan_count; j++, ri++) |
| 342 | icp->icp_bus_id[j] = ri->ri_procid; |
| 343 | } else { |
| 344 | /* |
| 345 | * Fall back to the old method. |
| 346 | */ |
| 347 | gc = (struct icp_getch *)icp->icp_scr; |
| 348 | |
| 349 | for (j = 0; j < binfo.bi_chan_count; j++) { |
| 350 | if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL, |
| 351 | ICP_SCSI_CHAN_CNT | ICP_L_CTRL_PATTERN, |
| 352 | ICP_IO_CHANNEL | ICP_INVALID_CHANNEL, |
| 353 | sizeof(*gc))) { |
| 354 | aprint_error_dev(icp->icp_dv, |
| 355 | "unable to get chan info" ); |
| 356 | goto bail_out; |
| 357 | } |
| 358 | icp->icp_bus_id[j] = gc->gc_scsiid; |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | for (j = 0; j < binfo.bi_chan_count; j++) { |
| 363 | if (icp->icp_bus_id[j] > ICP_MAXID_FC) |
| 364 | icp->icp_bus_id[j] = ICP_MAXID_FC; |
| 365 | |
| 366 | icpa.icpa_unit = j + ICPA_UNIT_SCSI; |
| 367 | |
| 368 | locs[ICPCF_UNIT] = j + ICPA_UNIT_SCSI; |
| 369 | |
| 370 | icp->icp_children[icpa.icpa_unit] = |
| 371 | config_found_sm_loc(icp->icp_dv, "icp" , locs, |
| 372 | &icpa, icp_print, config_stdsubmatch); |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | /* |
| 377 | * Attach cache devices. |
| 378 | */ |
| 379 | if (icp->icp_features & ICP_FEAT_CACHESERVICE) { |
| 380 | for (j = 0; j < cdev_cnt && j < ICP_MAX_HDRIVES; j++) { |
| 381 | if (icp->icp_cdr[j].cd_size == 0) |
| 382 | continue; |
| 383 | |
| 384 | icpa.icpa_unit = j; |
| 385 | |
| 386 | locs[ICPCF_UNIT] = j; |
| 387 | |
| 388 | icp->icp_children[icpa.icpa_unit] = |
| 389 | config_found_sm_loc(icp->icp_dv, "icp" , locs, |
| 390 | &icpa, icp_print, config_stdsubmatch); |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | /* |
| 395 | * Start the watchdog. |
| 396 | */ |
| 397 | icp_watchdog(icp); |
| 398 | |
| 399 | /* |
| 400 | * Count the controller, and we're done! |
| 401 | */ |
| 402 | if (icp_count++ == 0) |
| 403 | mutex_init(&icp_ioctl_mutex, MUTEX_DEFAULT, IPL_NONE); |
| 404 | |
| 405 | return (0); |
| 406 | |
| 407 | bail_out: |
| 408 | if (state > 4) |
| 409 | for (j = 0; j < i; j++) |
| 410 | bus_dmamap_destroy(icp->icp_dmat, |
| 411 | icp->icp_ccbs[j].ic_xfer_map); |
| 412 | if (state > 3) |
| 413 | free(icp->icp_ccbs, M_DEVBUF); |
| 414 | if (state > 2) |
| 415 | bus_dmamap_unload(icp->icp_dmat, icp->icp_scr_dmamap); |
| 416 | if (state > 1) |
| 417 | bus_dmamem_unmap(icp->icp_dmat, icp->icp_scr, |
| 418 | ICP_SCRATCH_SIZE); |
| 419 | if (state > 0) |
| 420 | bus_dmamem_free(icp->icp_dmat, icp->icp_scr_seg, nsegs); |
| 421 | bus_dmamap_destroy(icp->icp_dmat, icp->icp_scr_dmamap); |
| 422 | |
| 423 | return (1); |
| 424 | } |
| 425 | |
| 426 | void |
| 427 | icp_register_servicecb(struct icp_softc *icp, int unit, |
| 428 | const struct icp_servicecb *cb) |
| 429 | { |
| 430 | |
| 431 | icp->icp_servicecb[unit] = cb; |
| 432 | } |
| 433 | |
| 434 | void |
| 435 | icp_rescan(struct icp_softc *icp, int unit) |
| 436 | { |
| 437 | struct icp_attach_args icpa; |
| 438 | u_int newsize, newtype; |
| 439 | int locs[ICPCF_NLOCS]; |
| 440 | |
| 441 | /* |
| 442 | * NOTE: It is very important that the queue be frozen and not |
| 443 | * commands running when this is called. The ioctl mutex must |
| 444 | * also be held. |
| 445 | */ |
| 446 | |
| 447 | KASSERT(icp->icp_qfreeze != 0); |
| 448 | KASSERT(icp->icp_running == 0); |
| 449 | KASSERT(unit < ICP_MAX_HDRIVES); |
| 450 | |
| 451 | if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_INFO, unit, 0, 0)) { |
| 452 | #ifdef ICP_DEBUG |
| 453 | printf("%s: rescan: unit %d ICP_INFO failed -> 0x%04x\n" , |
| 454 | device_xname(icp->icp_dv), unit, icp->icp_status); |
| 455 | #endif |
| 456 | goto gone; |
| 457 | } |
| 458 | if ((newsize = icp->icp_info) == 0) { |
| 459 | #ifdef ICP_DEBUG |
| 460 | printf("%s: rescan: unit %d has zero size\n" , |
| 461 | device_xname(icp->icp_dv), unit); |
| 462 | #endif |
| 463 | gone: |
| 464 | /* |
| 465 | * Host drive is no longer present; detach if a child |
| 466 | * is currently there. |
| 467 | */ |
| 468 | if (icp->icp_cdr[unit].cd_size != 0) |
| 469 | icp->icp_ndevs--; |
| 470 | icp->icp_cdr[unit].cd_size = 0; |
| 471 | if (icp->icp_children[unit] != NULL) { |
| 472 | (void) config_detach(icp->icp_children[unit], |
| 473 | DETACH_FORCE); |
| 474 | icp->icp_children[unit] = NULL; |
| 475 | } |
| 476 | return; |
| 477 | } |
| 478 | |
| 479 | if (icp_cmd(icp, ICP_CACHESERVICE, ICP_DEVTYPE, unit, 0, 0)) |
| 480 | newtype = icp->icp_info; |
| 481 | else { |
| 482 | #ifdef ICP_DEBUG |
| 483 | printf("%s: rescan: unit %d ICP_DEVTYPE failed\n" , |
| 484 | device_xname(icp->icp_dv), unit); |
| 485 | #endif |
| 486 | newtype = 0; /* XXX? */ |
| 487 | } |
| 488 | |
| 489 | #ifdef ICP_DEBUG |
| 490 | printf("%s: rescan: unit %d old %u/%u, new %u/%u\n" , |
| 491 | device_xname(icp->icp_dv), unit, icp->icp_cdr[unit].cd_size, |
| 492 | icp->icp_cdr[unit].cd_type, newsize, newtype); |
| 493 | #endif |
| 494 | |
| 495 | /* |
| 496 | * If the type or size changed, detach any old child (if it exists) |
| 497 | * and attach a new one. |
| 498 | */ |
| 499 | if (icp->icp_children[unit] == NULL || |
| 500 | newsize != icp->icp_cdr[unit].cd_size || |
| 501 | newtype != icp->icp_cdr[unit].cd_type) { |
| 502 | if (icp->icp_cdr[unit].cd_size == 0) |
| 503 | icp->icp_ndevs++; |
| 504 | icp->icp_cdr[unit].cd_size = newsize; |
| 505 | icp->icp_cdr[unit].cd_type = newtype; |
| 506 | if (icp->icp_children[unit] != NULL) |
| 507 | (void) config_detach(icp->icp_children[unit], |
| 508 | DETACH_FORCE); |
| 509 | |
| 510 | icpa.icpa_unit = unit; |
| 511 | |
| 512 | locs[ICPCF_UNIT] = unit; |
| 513 | |
| 514 | icp->icp_children[unit] = config_found_sm_loc(icp->icp_dv, |
| 515 | "icp" , locs, &icpa, icp_print, config_stdsubmatch); |
| 516 | } |
| 517 | |
| 518 | icp_recompute_openings(icp); |
| 519 | } |
| 520 | |
| 521 | void |
| 522 | icp_rescan_all(struct icp_softc *icp) |
| 523 | { |
| 524 | int unit; |
| 525 | u_int16_t cdev_cnt; |
| 526 | |
| 527 | /* |
| 528 | * This is the old method of rescanning the host drives. We |
| 529 | * start by reinitializing the cache service. |
| 530 | */ |
| 531 | if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_INIT, ICP_LINUX_OS, 0, 0)) { |
| 532 | printf("%s: unable to re-initialize cache service for rescan\n" , |
| 533 | device_xname(icp->icp_dv)); |
| 534 | return; |
| 535 | } |
| 536 | cdev_cnt = (u_int16_t) icp->icp_info; |
| 537 | |
| 538 | /* For each host drive, do the new-style rescan. */ |
| 539 | for (unit = 0; unit < cdev_cnt && unit < ICP_MAX_HDRIVES; unit++) |
| 540 | icp_rescan(icp, unit); |
| 541 | |
| 542 | /* Now detach anything in the slots after cdev_cnt. */ |
| 543 | for (; unit < ICP_MAX_HDRIVES; unit++) { |
| 544 | if (icp->icp_cdr[unit].cd_size != 0) { |
| 545 | #ifdef ICP_DEBUG |
| 546 | printf("%s: rescan all: unit %d < new cdev_cnt (%d)\n" , |
| 547 | device_xname(icp->icp_dv), unit, cdev_cnt); |
| 548 | #endif |
| 549 | icp->icp_ndevs--; |
| 550 | icp->icp_cdr[unit].cd_size = 0; |
| 551 | if (icp->icp_children[unit] != NULL) { |
| 552 | (void) config_detach(icp->icp_children[unit], |
| 553 | DETACH_FORCE); |
| 554 | icp->icp_children[unit] = NULL; |
| 555 | } |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | icp_recompute_openings(icp); |
| 560 | } |
| 561 | |
| 562 | void |
| 563 | icp_recompute_openings(struct icp_softc *icp) |
| 564 | { |
| 565 | int unit, openings; |
| 566 | |
| 567 | if (icp->icp_ndevs != 0) |
| 568 | openings = |
| 569 | (icp->icp_nccbs - ICP_NCCB_RESERVE) / icp->icp_ndevs; |
| 570 | else |
| 571 | openings = 0; |
| 572 | if (openings == icp->icp_openings) |
| 573 | return; |
| 574 | icp->icp_openings = openings; |
| 575 | |
| 576 | #ifdef ICP_DEBUG |
| 577 | printf("%s: %d device%s, %d openings per device\n" , |
| 578 | device_xname(icp->icp_dv), icp->icp_ndevs, |
| 579 | icp->icp_ndevs == 1 ? "" : "s" , icp->icp_openings); |
| 580 | #endif |
| 581 | |
| 582 | for (unit = 0; unit < ICP_MAX_HDRIVES + ICP_MAXBUS; unit++) { |
| 583 | if (icp->icp_children[unit] != NULL) |
| 584 | (*icp->icp_servicecb[unit]->iscb_openings)( |
| 585 | icp->icp_children[unit], icp->icp_openings); |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | void |
| 590 | icp_watchdog(void *cookie) |
| 591 | { |
| 592 | struct icp_softc *icp; |
| 593 | int s; |
| 594 | |
| 595 | icp = cookie; |
| 596 | |
| 597 | s = splbio(); |
| 598 | icp_intr(icp); |
| 599 | if (ICP_HAS_WORK(icp)) |
| 600 | icp_ccb_enqueue(icp, NULL); |
| 601 | splx(s); |
| 602 | |
| 603 | callout_reset(&icp->icp_wdog_callout, hz * ICP_WATCHDOG_FREQ, |
| 604 | icp_watchdog, icp); |
| 605 | } |
| 606 | |
| 607 | int |
| 608 | icp_print(void *aux, const char *pnp) |
| 609 | { |
| 610 | struct icp_attach_args *icpa; |
| 611 | const char *str; |
| 612 | |
| 613 | icpa = (struct icp_attach_args *)aux; |
| 614 | |
| 615 | if (pnp != NULL) { |
| 616 | if (icpa->icpa_unit < ICPA_UNIT_SCSI) |
| 617 | str = "block device" ; |
| 618 | else |
| 619 | str = "SCSI channel" ; |
| 620 | aprint_normal("%s at %s" , str, pnp); |
| 621 | } |
| 622 | aprint_normal(" unit %d" , icpa->icpa_unit); |
| 623 | |
| 624 | return (UNCONF); |
| 625 | } |
| 626 | |
| 627 | int |
| 628 | icp_async_event(struct icp_softc *icp, int service) |
| 629 | { |
| 630 | |
| 631 | if (service == ICP_SCREENSERVICE) { |
| 632 | if (icp->icp_status == ICP_S_MSG_REQUEST) { |
| 633 | /* XXX */ |
| 634 | } |
| 635 | } else { |
| 636 | if ((icp->icp_fw_vers & 0xff) >= 0x1a) { |
| 637 | icp->icp_evt.size = 0; |
| 638 | icp->icp_evt.eu.async.ionode = |
| 639 | device_unit(icp->icp_dv); |
| 640 | icp->icp_evt.eu.async.status = icp->icp_status; |
| 641 | /* |
| 642 | * Severity and event string are filled in by the |
| 643 | * hardware interface interrupt handler. |
| 644 | */ |
| 645 | printf("%s: %s\n" , device_xname(icp->icp_dv), |
| 646 | icp->icp_evt.event_string); |
| 647 | } else { |
| 648 | icp->icp_evt.size = sizeof(icp->icp_evt.eu.async); |
| 649 | icp->icp_evt.eu.async.ionode = |
| 650 | device_unit(icp->icp_dv); |
| 651 | icp->icp_evt.eu.async.service = service; |
| 652 | icp->icp_evt.eu.async.status = icp->icp_status; |
| 653 | icp->icp_evt.eu.async.info = icp->icp_info; |
| 654 | /* XXXJRT FIX THIS */ |
| 655 | *(u_int32_t *) icp->icp_evt.eu.async.scsi_coord = |
| 656 | icp->icp_info2; |
| 657 | } |
| 658 | icp_store_event(icp, GDT_ES_ASYNC, service, &icp->icp_evt); |
| 659 | } |
| 660 | |
| 661 | return (0); |
| 662 | } |
| 663 | |
| 664 | int |
| 665 | icp_intr(void *cookie) |
| 666 | { |
| 667 | struct icp_softc *icp; |
| 668 | struct icp_intr_ctx ctx; |
| 669 | struct icp_ccb *ic; |
| 670 | |
| 671 | icp = cookie; |
| 672 | |
| 673 | ctx.istatus = (*icp->icp_get_status)(icp); |
| 674 | if (!ctx.istatus) { |
| 675 | icp->icp_status = ICP_S_NO_STATUS; |
| 676 | return (0); |
| 677 | } |
| 678 | |
| 679 | (*icp->icp_intr)(icp, &ctx); |
| 680 | |
| 681 | icp->icp_status = ctx.cmd_status; |
| 682 | icp->icp_service = ctx.service; |
| 683 | icp->icp_info = ctx.info; |
| 684 | icp->icp_info2 = ctx.info2; |
| 685 | |
| 686 | switch (ctx.istatus) { |
| 687 | case ICP_ASYNCINDEX: |
| 688 | icp_async_event(icp, ctx.service); |
| 689 | return (1); |
| 690 | |
| 691 | case ICP_SPEZINDEX: |
| 692 | aprint_error_dev(icp->icp_dv, "uninitialized or unknown service (%d/%d)\n" , |
| 693 | ctx.info, ctx.info2); |
| 694 | icp->icp_evt.size = sizeof(icp->icp_evt.eu.driver); |
| 695 | icp->icp_evt.eu.driver.ionode = device_unit(icp->icp_dv); |
| 696 | icp_store_event(icp, GDT_ES_DRIVER, 4, &icp->icp_evt); |
| 697 | return (1); |
| 698 | } |
| 699 | |
| 700 | if ((ctx.istatus - 2) > icp->icp_nccbs) |
| 701 | panic("icp_intr: bad command index returned" ); |
| 702 | |
| 703 | ic = &icp->icp_ccbs[ctx.istatus - 2]; |
| 704 | ic->ic_status = icp->icp_status; |
| 705 | |
| 706 | if ((ic->ic_flags & IC_ALLOCED) == 0) { |
| 707 | /* XXX ICP's "iir" driver just sends an event here. */ |
| 708 | panic("icp_intr: inactive CCB identified" ); |
| 709 | } |
| 710 | |
| 711 | /* |
| 712 | * Try to protect ourselves from the running command count already |
| 713 | * being 0 (e.g. if a polled command times out). |
| 714 | */ |
| 715 | KDASSERT(icp->icp_running != 0); |
| 716 | if (--icp->icp_running == 0 && |
| 717 | (icp->icp_flags & ICP_F_WAIT_FREEZE) != 0) { |
| 718 | icp->icp_flags &= ~ICP_F_WAIT_FREEZE; |
| 719 | wakeup(&icp->icp_qfreeze); |
| 720 | } |
| 721 | |
| 722 | switch (icp->icp_status) { |
| 723 | case ICP_S_BSY: |
| 724 | #ifdef ICP_DEBUG |
| 725 | printf("%s: ICP_S_BSY received\n" , device_xname(icp->icp_dv)); |
| 726 | #endif |
| 727 | if (__predict_false((ic->ic_flags & IC_UCMD) != 0)) |
| 728 | SIMPLEQ_INSERT_HEAD(&icp->icp_ucmd_queue, ic, ic_chain); |
| 729 | else |
| 730 | SIMPLEQ_INSERT_HEAD(&icp->icp_ccb_queue, ic, ic_chain); |
| 731 | break; |
| 732 | |
| 733 | default: |
| 734 | ic->ic_flags |= IC_COMPLETE; |
| 735 | |
| 736 | if ((ic->ic_flags & IC_WAITING) != 0) |
| 737 | wakeup(ic); |
| 738 | else if (ic->ic_intr != NULL) |
| 739 | (*ic->ic_intr)(ic); |
| 740 | |
| 741 | if (ICP_HAS_WORK(icp)) |
| 742 | icp_ccb_enqueue(icp, NULL); |
| 743 | |
| 744 | break; |
| 745 | } |
| 746 | |
| 747 | return (1); |
| 748 | } |
| 749 | |
| 750 | struct icp_ucmd_ctx { |
| 751 | gdt_ucmd_t *iu_ucmd; |
| 752 | u_int32_t iu_cnt; |
| 753 | }; |
| 754 | |
| 755 | void |
| 756 | icp_ucmd_intr(struct icp_ccb *ic) |
| 757 | { |
| 758 | struct icp_softc *icp = device_private(ic->ic_dv); |
| 759 | struct icp_ucmd_ctx *iu = ic->ic_context; |
| 760 | gdt_ucmd_t *ucmd = iu->iu_ucmd; |
| 761 | |
| 762 | ucmd->status = icp->icp_status; |
| 763 | ucmd->info = icp->icp_info; |
| 764 | |
| 765 | if (iu->iu_cnt != 0) { |
| 766 | bus_dmamap_sync(icp->icp_dmat, |
| 767 | icp->icp_scr_dmamap, |
| 768 | ICP_SCRATCH_UCMD, iu->iu_cnt, |
| 769 | BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); |
| 770 | memcpy(ucmd->data, |
| 771 | (char *)icp->icp_scr + ICP_SCRATCH_UCMD, iu->iu_cnt); |
| 772 | } |
| 773 | |
| 774 | icp->icp_ucmd_ccb = NULL; |
| 775 | |
| 776 | ic->ic_flags |= IC_COMPLETE; |
| 777 | wakeup(ic); |
| 778 | } |
| 779 | |
| 780 | /* |
| 781 | * NOTE: We assume that it is safe to sleep here! |
| 782 | */ |
| 783 | int |
| 784 | icp_cmd(struct icp_softc *icp, u_int8_t service, u_int16_t opcode, |
| 785 | u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) |
| 786 | { |
| 787 | struct icp_ioctlcmd *icmd; |
| 788 | struct icp_cachecmd *cc; |
| 789 | struct icp_rawcmd *rc; |
| 790 | int retries, rv; |
| 791 | struct icp_ccb *ic; |
| 792 | |
| 793 | retries = ICP_RETRIES; |
| 794 | |
| 795 | do { |
| 796 | ic = icp_ccb_alloc_wait(icp); |
| 797 | memset(&ic->ic_cmd, 0, sizeof(ic->ic_cmd)); |
| 798 | ic->ic_cmd.cmd_opcode = htole16(opcode); |
| 799 | |
| 800 | switch (service) { |
| 801 | case ICP_CACHESERVICE: |
| 802 | if (opcode == ICP_IOCTL) { |
| 803 | icmd = &ic->ic_cmd.cmd_packet.ic; |
| 804 | icmd->ic_subfunc = htole16(arg1); |
| 805 | icmd->ic_channel = htole32(arg2); |
| 806 | icmd->ic_bufsize = htole32(arg3); |
| 807 | icmd->ic_addr = |
| 808 | htole32(icp->icp_scr_seg[0].ds_addr); |
| 809 | |
| 810 | bus_dmamap_sync(icp->icp_dmat, |
| 811 | icp->icp_scr_dmamap, 0, arg3, |
| 812 | BUS_DMASYNC_PREWRITE | |
| 813 | BUS_DMASYNC_PREREAD); |
| 814 | } else { |
| 815 | cc = &ic->ic_cmd.cmd_packet.cc; |
| 816 | cc->cc_deviceno = htole16(arg1); |
| 817 | cc->cc_blockno = htole32(arg2); |
| 818 | } |
| 819 | break; |
| 820 | |
| 821 | case ICP_SCSIRAWSERVICE: |
| 822 | rc = &ic->ic_cmd.cmd_packet.rc; |
| 823 | rc->rc_direction = htole32(arg1); |
| 824 | rc->rc_bus = arg2; |
| 825 | rc->rc_target = arg3; |
| 826 | rc->rc_lun = arg3 >> 8; |
| 827 | break; |
| 828 | } |
| 829 | |
| 830 | ic->ic_service = service; |
| 831 | ic->ic_cmdlen = sizeof(ic->ic_cmd); |
| 832 | rv = icp_ccb_poll(icp, ic, 10000); |
| 833 | |
| 834 | switch (service) { |
| 835 | case ICP_CACHESERVICE: |
| 836 | if (opcode == ICP_IOCTL) { |
| 837 | bus_dmamap_sync(icp->icp_dmat, |
| 838 | icp->icp_scr_dmamap, 0, arg3, |
| 839 | BUS_DMASYNC_POSTWRITE | |
| 840 | BUS_DMASYNC_POSTREAD); |
| 841 | } |
| 842 | break; |
| 843 | } |
| 844 | |
| 845 | icp_ccb_free(icp, ic); |
| 846 | } while (rv != 0 && --retries > 0); |
| 847 | |
| 848 | return (icp->icp_status == ICP_S_OK); |
| 849 | } |
| 850 | |
| 851 | int |
| 852 | icp_ucmd(struct icp_softc *icp, gdt_ucmd_t *ucmd) |
| 853 | { |
| 854 | struct icp_ccb *ic; |
| 855 | struct icp_ucmd_ctx iu; |
| 856 | u_int32_t cnt; |
| 857 | int error; |
| 858 | |
| 859 | if (ucmd->service == ICP_CACHESERVICE) { |
| 860 | if (ucmd->command.cmd_opcode == ICP_IOCTL) { |
| 861 | cnt = ucmd->command.cmd_packet.ic.ic_bufsize; |
| 862 | if (cnt > GDT_SCRATCH_SZ) { |
| 863 | aprint_error_dev(icp->icp_dv, "scratch buffer too small (%d/%d)\n" , |
| 864 | GDT_SCRATCH_SZ, cnt); |
| 865 | return (EINVAL); |
| 866 | } |
| 867 | } else { |
| 868 | cnt = ucmd->command.cmd_packet.cc.cc_blockcnt * |
| 869 | ICP_SECTOR_SIZE; |
| 870 | if (cnt > GDT_SCRATCH_SZ) { |
| 871 | aprint_error_dev(icp->icp_dv, "scratch buffer too small (%d/%d)\n" , |
| 872 | GDT_SCRATCH_SZ, cnt); |
| 873 | return (EINVAL); |
| 874 | } |
| 875 | } |
| 876 | } else { |
| 877 | cnt = ucmd->command.cmd_packet.rc.rc_sdlen + |
| 878 | ucmd->command.cmd_packet.rc.rc_sense_len; |
| 879 | if (cnt > GDT_SCRATCH_SZ) { |
| 880 | aprint_error_dev(icp->icp_dv, "scratch buffer too small (%d/%d)\n" , |
| 881 | GDT_SCRATCH_SZ, cnt); |
| 882 | return (EINVAL); |
| 883 | } |
| 884 | } |
| 885 | |
| 886 | iu.iu_ucmd = ucmd; |
| 887 | iu.iu_cnt = cnt; |
| 888 | |
| 889 | ic = icp_ccb_alloc_wait(icp); |
| 890 | memset(&ic->ic_cmd, 0, sizeof(ic->ic_cmd)); |
| 891 | ic->ic_cmd.cmd_opcode = htole16(ucmd->command.cmd_opcode); |
| 892 | |
| 893 | if (ucmd->service == ICP_CACHESERVICE) { |
| 894 | if (ucmd->command.cmd_opcode == ICP_IOCTL) { |
| 895 | struct icp_ioctlcmd *icmd, *uicmd; |
| 896 | |
| 897 | icmd = &ic->ic_cmd.cmd_packet.ic; |
| 898 | uicmd = &ucmd->command.cmd_packet.ic; |
| 899 | |
| 900 | icmd->ic_subfunc = htole16(uicmd->ic_subfunc); |
| 901 | icmd->ic_channel = htole32(uicmd->ic_channel); |
| 902 | icmd->ic_bufsize = htole32(uicmd->ic_bufsize); |
| 903 | icmd->ic_addr = |
| 904 | htole32(icp->icp_scr_seg[0].ds_addr + |
| 905 | ICP_SCRATCH_UCMD); |
| 906 | } else { |
| 907 | struct icp_cachecmd *cc, *ucc; |
| 908 | |
| 909 | cc = &ic->ic_cmd.cmd_packet.cc; |
| 910 | ucc = &ucmd->command.cmd_packet.cc; |
| 911 | |
| 912 | cc->cc_deviceno = htole16(ucc->cc_deviceno); |
| 913 | cc->cc_blockno = htole32(ucc->cc_blockno); |
| 914 | cc->cc_blockcnt = htole32(ucc->cc_blockcnt); |
| 915 | cc->cc_addr = htole32(0xffffffffU); |
| 916 | cc->cc_nsgent = htole32(1); |
| 917 | cc->cc_sg[0].sg_addr = |
| 918 | htole32(icp->icp_scr_seg[0].ds_addr + |
| 919 | ICP_SCRATCH_UCMD); |
| 920 | cc->cc_sg[0].sg_len = htole32(cnt); |
| 921 | } |
| 922 | } else { |
| 923 | struct icp_rawcmd *rc, *urc; |
| 924 | |
| 925 | rc = &ic->ic_cmd.cmd_packet.rc; |
| 926 | urc = &ucmd->command.cmd_packet.rc; |
| 927 | |
| 928 | rc->rc_direction = htole32(urc->rc_direction); |
| 929 | rc->rc_sdata = htole32(0xffffffffU); |
| 930 | rc->rc_sdlen = htole32(urc->rc_sdlen); |
| 931 | rc->rc_clen = htole32(urc->rc_clen); |
| 932 | memcpy(rc->rc_cdb, urc->rc_cdb, sizeof(rc->rc_cdb)); |
| 933 | rc->rc_target = urc->rc_target; |
| 934 | rc->rc_lun = urc->rc_lun; |
| 935 | rc->rc_bus = urc->rc_bus; |
| 936 | rc->rc_sense_len = htole32(urc->rc_sense_len); |
| 937 | rc->rc_sense_addr = |
| 938 | htole32(icp->icp_scr_seg[0].ds_addr + |
| 939 | ICP_SCRATCH_UCMD + urc->rc_sdlen); |
| 940 | rc->rc_nsgent = htole32(1); |
| 941 | rc->rc_sg[0].sg_addr = |
| 942 | htole32(icp->icp_scr_seg[0].ds_addr + ICP_SCRATCH_UCMD); |
| 943 | rc->rc_sg[0].sg_len = htole32(cnt - urc->rc_sense_len); |
| 944 | } |
| 945 | |
| 946 | ic->ic_service = ucmd->service; |
| 947 | ic->ic_cmdlen = sizeof(ic->ic_cmd); |
| 948 | ic->ic_context = &iu; |
| 949 | |
| 950 | /* |
| 951 | * XXX What units are ucmd->timeout in? Until we know, we |
| 952 | * XXX just pull a number out of thin air. |
| 953 | */ |
| 954 | if (__predict_false((error = icp_ccb_wait_user(icp, ic, 30000)) != 0)) |
| 955 | aprint_error_dev(icp->icp_dv, "error %d waiting for ucmd to complete\n" , |
| 956 | error); |
| 957 | |
| 958 | /* icp_ucmd_intr() has updated ucmd. */ |
| 959 | icp_ccb_free(icp, ic); |
| 960 | |
| 961 | return (error); |
| 962 | } |
| 963 | |
| 964 | struct icp_ccb * |
| 965 | icp_ccb_alloc(struct icp_softc *icp) |
| 966 | { |
| 967 | struct icp_ccb *ic; |
| 968 | int s; |
| 969 | |
| 970 | s = splbio(); |
| 971 | if (__predict_false((ic = |
| 972 | SIMPLEQ_FIRST(&icp->icp_ccb_freelist)) == NULL)) { |
| 973 | splx(s); |
| 974 | return (NULL); |
| 975 | } |
| 976 | SIMPLEQ_REMOVE_HEAD(&icp->icp_ccb_freelist, ic_chain); |
| 977 | splx(s); |
| 978 | |
| 979 | ic->ic_flags = IC_ALLOCED; |
| 980 | return (ic); |
| 981 | } |
| 982 | |
| 983 | struct icp_ccb * |
| 984 | icp_ccb_alloc_wait(struct icp_softc *icp) |
| 985 | { |
| 986 | struct icp_ccb *ic; |
| 987 | int s; |
| 988 | |
| 989 | s = splbio(); |
| 990 | while ((ic = SIMPLEQ_FIRST(&icp->icp_ccb_freelist)) == NULL) { |
| 991 | icp->icp_flags |= ICP_F_WAIT_CCB; |
| 992 | (void) tsleep(&icp->icp_ccb_freelist, PRIBIO, "icpccb" , 0); |
| 993 | } |
| 994 | SIMPLEQ_REMOVE_HEAD(&icp->icp_ccb_freelist, ic_chain); |
| 995 | splx(s); |
| 996 | |
| 997 | ic->ic_flags = IC_ALLOCED; |
| 998 | return (ic); |
| 999 | } |
| 1000 | |
| 1001 | void |
| 1002 | icp_ccb_free(struct icp_softc *icp, struct icp_ccb *ic) |
| 1003 | { |
| 1004 | int s; |
| 1005 | |
| 1006 | s = splbio(); |
| 1007 | ic->ic_flags = 0; |
| 1008 | ic->ic_intr = NULL; |
| 1009 | SIMPLEQ_INSERT_HEAD(&icp->icp_ccb_freelist, ic, ic_chain); |
| 1010 | if (__predict_false((icp->icp_flags & ICP_F_WAIT_CCB) != 0)) { |
| 1011 | icp->icp_flags &= ~ICP_F_WAIT_CCB; |
| 1012 | wakeup(&icp->icp_ccb_freelist); |
| 1013 | } |
| 1014 | splx(s); |
| 1015 | } |
| 1016 | |
| 1017 | void |
| 1018 | icp_ccb_enqueue(struct icp_softc *icp, struct icp_ccb *ic) |
| 1019 | { |
| 1020 | int s; |
| 1021 | |
| 1022 | s = splbio(); |
| 1023 | |
| 1024 | if (ic != NULL) { |
| 1025 | if (__predict_false((ic->ic_flags & IC_UCMD) != 0)) |
| 1026 | SIMPLEQ_INSERT_TAIL(&icp->icp_ucmd_queue, ic, ic_chain); |
| 1027 | else |
| 1028 | SIMPLEQ_INSERT_TAIL(&icp->icp_ccb_queue, ic, ic_chain); |
| 1029 | } |
| 1030 | |
| 1031 | for (; icp->icp_qfreeze == 0;) { |
| 1032 | if (__predict_false((ic = |
| 1033 | SIMPLEQ_FIRST(&icp->icp_ucmd_queue)) != NULL)) { |
| 1034 | struct icp_ucmd_ctx *iu = ic->ic_context; |
| 1035 | gdt_ucmd_t *ucmd = iu->iu_ucmd; |
| 1036 | |
| 1037 | /* |
| 1038 | * All user-generated commands share the same |
| 1039 | * scratch space, so if one is already running, |
| 1040 | * we have to stall the command queue. |
| 1041 | */ |
| 1042 | if (icp->icp_ucmd_ccb != NULL) |
| 1043 | break; |
| 1044 | if ((*icp->icp_test_busy)(icp)) |
| 1045 | break; |
| 1046 | icp->icp_ucmd_ccb = ic; |
| 1047 | |
| 1048 | if (iu->iu_cnt != 0) { |
| 1049 | memcpy((char *)icp->icp_scr + ICP_SCRATCH_UCMD, |
| 1050 | ucmd->data, iu->iu_cnt); |
| 1051 | bus_dmamap_sync(icp->icp_dmat, |
| 1052 | icp->icp_scr_dmamap, |
| 1053 | ICP_SCRATCH_UCMD, iu->iu_cnt, |
| 1054 | BUS_DMASYNC_PREREAD | |
| 1055 | BUS_DMASYNC_PREWRITE); |
| 1056 | } |
| 1057 | } else if (__predict_true((ic = |
| 1058 | SIMPLEQ_FIRST(&icp->icp_ccb_queue)) != NULL)) { |
| 1059 | if ((*icp->icp_test_busy)(icp)) |
| 1060 | break; |
| 1061 | } else { |
| 1062 | /* no command found */ |
| 1063 | break; |
| 1064 | } |
| 1065 | icp_ccb_submit(icp, ic); |
| 1066 | if (__predict_false((ic->ic_flags & IC_UCMD) != 0)) |
| 1067 | SIMPLEQ_REMOVE_HEAD(&icp->icp_ucmd_queue, ic_chain); |
| 1068 | else |
| 1069 | SIMPLEQ_REMOVE_HEAD(&icp->icp_ccb_queue, ic_chain); |
| 1070 | } |
| 1071 | |
| 1072 | splx(s); |
| 1073 | } |
| 1074 | |
| 1075 | int |
| 1076 | icp_ccb_map(struct icp_softc *icp, struct icp_ccb *ic, void *data, int size, |
| 1077 | int dir) |
| 1078 | { |
| 1079 | struct icp_sg *sg; |
| 1080 | int nsegs, i, rv; |
| 1081 | bus_dmamap_t xfer; |
| 1082 | |
| 1083 | xfer = ic->ic_xfer_map; |
| 1084 | |
| 1085 | rv = bus_dmamap_load(icp->icp_dmat, xfer, data, size, NULL, |
| 1086 | BUS_DMA_NOWAIT | BUS_DMA_STREAMING | |
| 1087 | ((dir & IC_XFER_IN) ? BUS_DMA_READ : BUS_DMA_WRITE)); |
| 1088 | if (rv != 0) |
| 1089 | return (rv); |
| 1090 | |
| 1091 | nsegs = xfer->dm_nsegs; |
| 1092 | ic->ic_xfer_size = size; |
| 1093 | ic->ic_nsgent = nsegs; |
| 1094 | ic->ic_flags |= dir; |
| 1095 | sg = ic->ic_sg; |
| 1096 | |
| 1097 | if (sg != NULL) { |
| 1098 | for (i = 0; i < nsegs; i++, sg++) { |
| 1099 | sg->sg_addr = htole32(xfer->dm_segs[i].ds_addr); |
| 1100 | sg->sg_len = htole32(xfer->dm_segs[i].ds_len); |
| 1101 | } |
| 1102 | } else if (nsegs > 1) |
| 1103 | panic("icp_ccb_map: no SG list specified, but nsegs > 1" ); |
| 1104 | |
| 1105 | if ((dir & IC_XFER_OUT) != 0) |
| 1106 | i = BUS_DMASYNC_PREWRITE; |
| 1107 | else /* if ((dir & IC_XFER_IN) != 0) */ |
| 1108 | i = BUS_DMASYNC_PREREAD; |
| 1109 | |
| 1110 | bus_dmamap_sync(icp->icp_dmat, xfer, 0, ic->ic_xfer_size, i); |
| 1111 | return (0); |
| 1112 | } |
| 1113 | |
| 1114 | void |
| 1115 | icp_ccb_unmap(struct icp_softc *icp, struct icp_ccb *ic) |
| 1116 | { |
| 1117 | int i; |
| 1118 | |
| 1119 | if ((ic->ic_flags & IC_XFER_OUT) != 0) |
| 1120 | i = BUS_DMASYNC_POSTWRITE; |
| 1121 | else /* if ((ic->ic_flags & IC_XFER_IN) != 0) */ |
| 1122 | i = BUS_DMASYNC_POSTREAD; |
| 1123 | |
| 1124 | bus_dmamap_sync(icp->icp_dmat, ic->ic_xfer_map, 0, ic->ic_xfer_size, i); |
| 1125 | bus_dmamap_unload(icp->icp_dmat, ic->ic_xfer_map); |
| 1126 | } |
| 1127 | |
| 1128 | int |
| 1129 | icp_ccb_poll(struct icp_softc *icp, struct icp_ccb *ic, int timo) |
| 1130 | { |
| 1131 | int s, rv; |
| 1132 | |
| 1133 | s = splbio(); |
| 1134 | |
| 1135 | for (timo = ICP_BUSY_WAIT_MS * 100; timo != 0; timo--) { |
| 1136 | if (!(*icp->icp_test_busy)(icp)) |
| 1137 | break; |
| 1138 | DELAY(10); |
| 1139 | } |
| 1140 | if (timo == 0) { |
| 1141 | printf("%s: submit: busy\n" , device_xname(icp->icp_dv)); |
| 1142 | return (EAGAIN); |
| 1143 | } |
| 1144 | |
| 1145 | icp_ccb_submit(icp, ic); |
| 1146 | |
| 1147 | if (cold) { |
| 1148 | for (timo *= 10; timo != 0; timo--) { |
| 1149 | DELAY(100); |
| 1150 | icp_intr(icp); |
| 1151 | if ((ic->ic_flags & IC_COMPLETE) != 0) |
| 1152 | break; |
| 1153 | } |
| 1154 | } else { |
| 1155 | ic->ic_flags |= IC_WAITING; |
| 1156 | while ((ic->ic_flags & IC_COMPLETE) == 0) { |
| 1157 | if ((rv = tsleep(ic, PRIBIO, "icpwccb" , |
| 1158 | mstohz(timo))) != 0) { |
| 1159 | timo = 0; |
| 1160 | break; |
| 1161 | } |
| 1162 | } |
| 1163 | } |
| 1164 | |
| 1165 | if (timo != 0) { |
| 1166 | if (ic->ic_status != ICP_S_OK) { |
| 1167 | #ifdef ICP_DEBUG |
| 1168 | printf("%s: request failed; status=0x%04x\n" , |
| 1169 | device_xname(icp->icp_dv), ic->ic_status); |
| 1170 | #endif |
| 1171 | rv = EIO; |
| 1172 | } else |
| 1173 | rv = 0; |
| 1174 | } else { |
| 1175 | aprint_error_dev(icp->icp_dv, "command timed out\n" ); |
| 1176 | rv = EIO; |
| 1177 | } |
| 1178 | |
| 1179 | while ((*icp->icp_test_busy)(icp) != 0) |
| 1180 | DELAY(10); |
| 1181 | |
| 1182 | splx(s); |
| 1183 | |
| 1184 | return (rv); |
| 1185 | } |
| 1186 | |
| 1187 | int |
| 1188 | icp_ccb_wait(struct icp_softc *icp, struct icp_ccb *ic, int timo) |
| 1189 | { |
| 1190 | int s, rv; |
| 1191 | |
| 1192 | ic->ic_flags |= IC_WAITING; |
| 1193 | |
| 1194 | s = splbio(); |
| 1195 | icp_ccb_enqueue(icp, ic); |
| 1196 | while ((ic->ic_flags & IC_COMPLETE) == 0) { |
| 1197 | if ((rv = tsleep(ic, PRIBIO, "icpwccb" , mstohz(timo))) != 0) { |
| 1198 | splx(s); |
| 1199 | return (rv); |
| 1200 | } |
| 1201 | } |
| 1202 | splx(s); |
| 1203 | |
| 1204 | if (ic->ic_status != ICP_S_OK) { |
| 1205 | aprint_error_dev(icp->icp_dv, "command failed; status=%x\n" , |
| 1206 | ic->ic_status); |
| 1207 | return (EIO); |
| 1208 | } |
| 1209 | |
| 1210 | return (0); |
| 1211 | } |
| 1212 | |
| 1213 | int |
| 1214 | icp_ccb_wait_user(struct icp_softc *icp, struct icp_ccb *ic, int timo) |
| 1215 | { |
| 1216 | int s, rv; |
| 1217 | |
| 1218 | ic->ic_dv = icp->icp_dv; |
| 1219 | ic->ic_intr = icp_ucmd_intr; |
| 1220 | ic->ic_flags |= IC_UCMD; |
| 1221 | |
| 1222 | s = splbio(); |
| 1223 | icp_ccb_enqueue(icp, ic); |
| 1224 | while ((ic->ic_flags & IC_COMPLETE) == 0) { |
| 1225 | if ((rv = tsleep(ic, PRIBIO, "icpwuccb" , mstohz(timo))) != 0) { |
| 1226 | splx(s); |
| 1227 | return (rv); |
| 1228 | } |
| 1229 | } |
| 1230 | splx(s); |
| 1231 | |
| 1232 | return (0); |
| 1233 | } |
| 1234 | |
| 1235 | void |
| 1236 | icp_ccb_submit(struct icp_softc *icp, struct icp_ccb *ic) |
| 1237 | { |
| 1238 | |
| 1239 | ic->ic_cmdlen = (ic->ic_cmdlen + 3) & ~3; |
| 1240 | |
| 1241 | (*icp->icp_set_sema0)(icp); |
| 1242 | DELAY(10); |
| 1243 | |
| 1244 | ic->ic_cmd.cmd_boardnode = htole32(ICP_LOCALBOARD); |
| 1245 | ic->ic_cmd.cmd_cmdindex = htole32(ic->ic_ident); |
| 1246 | |
| 1247 | icp->icp_running++; |
| 1248 | |
| 1249 | (*icp->icp_copy_cmd)(icp, ic); |
| 1250 | (*icp->icp_release_event)(icp, ic); |
| 1251 | } |
| 1252 | |
| 1253 | int |
| 1254 | icp_freeze(struct icp_softc *icp) |
| 1255 | { |
| 1256 | int s, error = 0; |
| 1257 | |
| 1258 | s = splbio(); |
| 1259 | if (icp->icp_qfreeze++ == 0) { |
| 1260 | while (icp->icp_running != 0) { |
| 1261 | icp->icp_flags |= ICP_F_WAIT_FREEZE; |
| 1262 | error = tsleep(&icp->icp_qfreeze, PRIBIO|PCATCH, |
| 1263 | "icpqfrz" , 0); |
| 1264 | if (error != 0 && --icp->icp_qfreeze == 0 && |
| 1265 | ICP_HAS_WORK(icp)) { |
| 1266 | icp_ccb_enqueue(icp, NULL); |
| 1267 | break; |
| 1268 | } |
| 1269 | } |
| 1270 | } |
| 1271 | splx(s); |
| 1272 | |
| 1273 | return (error); |
| 1274 | } |
| 1275 | |
| 1276 | void |
| 1277 | icp_unfreeze(struct icp_softc *icp) |
| 1278 | { |
| 1279 | int s; |
| 1280 | |
| 1281 | s = splbio(); |
| 1282 | KDASSERT(icp->icp_qfreeze != 0); |
| 1283 | if (--icp->icp_qfreeze == 0 && ICP_HAS_WORK(icp)) |
| 1284 | icp_ccb_enqueue(icp, NULL); |
| 1285 | splx(s); |
| 1286 | } |
| 1287 | |
| 1288 | /* XXX Global - should be per-controller? XXX */ |
| 1289 | static gdt_evt_str icp_event_buffer[ICP_MAX_EVENTS]; |
| 1290 | static int icp_event_oldidx; |
| 1291 | static int icp_event_lastidx; |
| 1292 | |
| 1293 | gdt_evt_str * |
| 1294 | icp_store_event(struct icp_softc *icp, u_int16_t source, u_int16_t idx, |
| 1295 | gdt_evt_data *evt) |
| 1296 | { |
| 1297 | gdt_evt_str *e; |
| 1298 | |
| 1299 | /* no source == no event */ |
| 1300 | if (source == 0) |
| 1301 | return (NULL); |
| 1302 | |
| 1303 | e = &icp_event_buffer[icp_event_lastidx]; |
| 1304 | if (e->event_source == source && e->event_idx == idx && |
| 1305 | ((evt->size != 0 && e->event_data.size != 0 && |
| 1306 | memcmp(&e->event_data.eu, &evt->eu, evt->size) == 0) || |
| 1307 | (evt->size == 0 && e->event_data.size == 0 && |
| 1308 | strcmp((char *) e->event_data.event_string, |
| 1309 | (char *) evt->event_string) == 0))) { |
| 1310 | e->last_stamp = time_second; |
| 1311 | e->same_count++; |
| 1312 | } else { |
| 1313 | if (icp_event_buffer[icp_event_lastidx].event_source != 0) { |
| 1314 | icp_event_lastidx++; |
| 1315 | if (icp_event_lastidx == ICP_MAX_EVENTS) |
| 1316 | icp_event_lastidx = 0; |
| 1317 | if (icp_event_lastidx == icp_event_oldidx) { |
| 1318 | icp_event_oldidx++; |
| 1319 | if (icp_event_oldidx == ICP_MAX_EVENTS) |
| 1320 | icp_event_oldidx = 0; |
| 1321 | } |
| 1322 | } |
| 1323 | e = &icp_event_buffer[icp_event_lastidx]; |
| 1324 | e->event_source = source; |
| 1325 | e->event_idx = idx; |
| 1326 | e->first_stamp = e->last_stamp = time_second; |
| 1327 | e->same_count = 1; |
| 1328 | e->event_data = *evt; |
| 1329 | e->application = 0; |
| 1330 | } |
| 1331 | return (e); |
| 1332 | } |
| 1333 | |
| 1334 | int |
| 1335 | icp_read_event(struct icp_softc *icp, int handle, gdt_evt_str *estr) |
| 1336 | { |
| 1337 | gdt_evt_str *e; |
| 1338 | int eindex, s; |
| 1339 | |
| 1340 | s = splbio(); |
| 1341 | |
| 1342 | if (handle == -1) |
| 1343 | eindex = icp_event_oldidx; |
| 1344 | else |
| 1345 | eindex = handle; |
| 1346 | |
| 1347 | estr->event_source = 0; |
| 1348 | |
| 1349 | if (eindex < 0 || eindex >= ICP_MAX_EVENTS) { |
| 1350 | splx(s); |
| 1351 | return (eindex); |
| 1352 | } |
| 1353 | |
| 1354 | e = &icp_event_buffer[eindex]; |
| 1355 | if (e->event_source != 0) { |
| 1356 | if (eindex != icp_event_lastidx) { |
| 1357 | eindex++; |
| 1358 | if (eindex == ICP_MAX_EVENTS) |
| 1359 | eindex = 0; |
| 1360 | } else |
| 1361 | eindex = -1; |
| 1362 | memcpy(estr, e, sizeof(gdt_evt_str)); |
| 1363 | } |
| 1364 | |
| 1365 | splx(s); |
| 1366 | |
| 1367 | return (eindex); |
| 1368 | } |
| 1369 | |
| 1370 | void |
| 1371 | icp_readapp_event(struct icp_softc *icp, u_int8_t application, |
| 1372 | gdt_evt_str *estr) |
| 1373 | { |
| 1374 | gdt_evt_str *e; |
| 1375 | int found = 0, eindex, s; |
| 1376 | |
| 1377 | s = splbio(); |
| 1378 | |
| 1379 | eindex = icp_event_oldidx; |
| 1380 | for (;;) { |
| 1381 | e = &icp_event_buffer[eindex]; |
| 1382 | if (e->event_source == 0) |
| 1383 | break; |
| 1384 | if ((e->application & application) == 0) { |
| 1385 | e->application |= application; |
| 1386 | found = 1; |
| 1387 | break; |
| 1388 | } |
| 1389 | if (eindex == icp_event_lastidx) |
| 1390 | break; |
| 1391 | eindex++; |
| 1392 | if (eindex == ICP_MAX_EVENTS) |
| 1393 | eindex = 0; |
| 1394 | } |
| 1395 | if (found) |
| 1396 | memcpy(estr, e, sizeof(gdt_evt_str)); |
| 1397 | else |
| 1398 | estr->event_source = 0; |
| 1399 | |
| 1400 | splx(s); |
| 1401 | } |
| 1402 | |
| 1403 | void |
| 1404 | icp_clear_events(struct icp_softc *icp) |
| 1405 | { |
| 1406 | int s; |
| 1407 | |
| 1408 | s = splbio(); |
| 1409 | icp_event_oldidx = icp_event_lastidx = 0; |
| 1410 | memset(icp_event_buffer, 0, sizeof(icp_event_buffer)); |
| 1411 | splx(s); |
| 1412 | } |
| 1413 | |