1 /*- 2 * Copyright 2007 Scott Long 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 /*- 27 * Redistribution and use in source and binary forms, with or without 28 * modification, are permitted provided that the following conditions 29 * are met: 30 * 31 * Copyright 1994-2009 The FreeBSD Project. 32 * All rights reserved. 33 * 34 * 1. Redistributions of source code must retain the above copyright 35 * notice, this list of conditions and the following disclaimer. 36 * 2. Redistributions in binary form must reproduce the above copyright 37 * notice, this list of conditions and the following disclaimer in the 38 * documentation and/or other materials provided with the distribution. 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE FREEBSD PROJECT``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 42 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FREEBSD PROJECT OR 44 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 45 * EXEMPLARY,OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 46 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 47 * PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY THEORY 48 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 49 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 50 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 51 * 52 * The views and conclusions contained in the software and documentation 53 * are those of the authors and should not be interpreted as representing 54 * official policies,either expressed or implied, of the FreeBSD Project. 55 * 56 * $FreeBSD: src/sys/dev/mfi/mfi_cam.c,v 1.6 2011/06/28 08:36:48 kevlo Exp $ 57 */ 58 59 #include "opt_mfi.h" 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/malloc.h> 65 #include <sys/module.h> 66 #include <sys/bus.h> 67 #include <sys/conf.h> 68 #include <sys/eventhandler.h> 69 #include <sys/rman.h> 70 #include <sys/bus_dma.h> 71 #include <sys/buf2.h> 72 #include <sys/ioccom.h> 73 #include <sys/uio.h> 74 #include <sys/proc.h> 75 #include <sys/signalvar.h> 76 77 #include <bus/cam/cam.h> 78 #include <bus/cam/cam_ccb.h> 79 #include <bus/cam/cam_debug.h> 80 #include <bus/cam/cam_sim.h> 81 #include <bus/cam/cam_xpt_sim.h> 82 #include <bus/cam/scsi/scsi_all.h> 83 #include <bus/cam/scsi/scsi_message.h> 84 85 #include <machine/md_var.h> 86 87 #include <dev/raid/mfi/mfireg.h> 88 #include <dev/raid/mfi/mfi_ioctl.h> 89 #include <dev/raid/mfi/mfivar.h> 90 91 struct mfip_softc { 92 device_t dev; 93 struct mfi_softc *mfi_sc; 94 struct cam_devq *devq; 95 struct cam_sim *sim; 96 struct cam_path *path; 97 }; 98 99 static int mfip_probe(device_t); 100 static int mfip_attach(device_t); 101 static int mfip_detach(device_t); 102 static void mfip_cam_action(struct cam_sim *, union ccb *); 103 static void mfip_cam_poll(struct cam_sim *); 104 static struct mfi_command * mfip_start(void *); 105 static void mfip_done(struct mfi_command *cm); 106 107 static devclass_t mfip_devclass; 108 static device_method_t mfip_methods[] = { 109 DEVMETHOD(device_probe, mfip_probe), 110 DEVMETHOD(device_attach, mfip_attach), 111 DEVMETHOD(device_detach, mfip_detach), 112 {0, 0} 113 }; 114 static driver_t mfip_driver = { 115 "mfip", 116 mfip_methods, 117 sizeof(struct mfip_softc) 118 }; 119 DRIVER_MODULE(mfip, mfi, mfip_driver, mfip_devclass, NULL, NULL); 120 MODULE_DEPEND(mfip, cam, 1, 1, 1); 121 MODULE_DEPEND(mfip, mfi, 1, 1, 1); 122 123 #define ccb_mfip_ptr sim_priv.entries[0].ptr 124 125 static int 126 mfip_probe(device_t dev) 127 { 128 129 device_set_desc(dev, "SCSI Passthrough Bus"); 130 return (0); 131 } 132 133 static int 134 mfip_attach(device_t dev) 135 { 136 struct mfip_softc *sc; 137 struct mfi_softc *mfisc; 138 139 sc = device_get_softc(dev); 140 if (sc == NULL) 141 return (EINVAL); 142 143 mfisc = device_get_softc(device_get_parent(dev)); 144 sc->dev = dev; 145 sc->mfi_sc = mfisc; 146 mfisc->mfi_cam_start = mfip_start; 147 148 if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL) 149 return (ENOMEM); 150 151 sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc, 152 device_get_unit(dev), &mfisc->mfi_io_lock, 1, 153 MFI_SCSI_MAX_CMDS, sc->devq); 154 if (sc->sim == NULL) { 155 device_printf(dev, "CAM SIM attach failed\n"); 156 return (EINVAL); 157 } 158 159 lockmgr(&mfisc->mfi_io_lock, LK_EXCLUSIVE); 160 if (xpt_bus_register(sc->sim, 0) != 0) { 161 device_printf(dev, "XPT bus registration failed\n"); 162 cam_sim_free(sc->sim); 163 lockmgr(&mfisc->mfi_io_lock, LK_RELEASE); 164 return (EINVAL); 165 } 166 lockmgr(&mfisc->mfi_io_lock, LK_RELEASE); 167 168 return (0); 169 } 170 171 static int 172 mfip_detach(device_t dev) 173 { 174 struct mfip_softc *sc; 175 176 sc = device_get_softc(dev); 177 if (sc == NULL) 178 return (EINVAL); 179 180 if (sc->sim != NULL) { 181 lockmgr(&sc->mfi_sc->mfi_io_lock, LK_EXCLUSIVE); 182 xpt_bus_deregister(cam_sim_path(sc->sim)); 183 cam_sim_free(sc->sim); 184 lockmgr(&sc->mfi_sc->mfi_io_lock, LK_RELEASE); 185 } 186 187 return (0); 188 } 189 190 static void 191 mfip_cam_action(struct cam_sim *sim, union ccb *ccb) 192 { 193 struct mfip_softc *sc = cam_sim_softc(sim); 194 struct mfi_softc *mfisc = sc->mfi_sc; 195 196 KKASSERT(lockstatus(&mfisc->mfi_io_lock, curthread) != 0); 197 198 switch (ccb->ccb_h.func_code) { 199 case XPT_PATH_INQ: 200 { 201 struct ccb_pathinq *cpi = &ccb->cpi; 202 203 cpi->version_num = 1; 204 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16; 205 cpi->target_sprt = 0; 206 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN; 207 cpi->hba_eng_cnt = 0; 208 cpi->max_target = MFI_SCSI_MAX_TARGETS; 209 cpi->max_lun = MFI_SCSI_MAX_LUNS; 210 cpi->initiator_id = MFI_SCSI_INITIATOR_ID; 211 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 212 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN); 213 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 214 cpi->unit_number = cam_sim_unit(sim); 215 cpi->bus_id = cam_sim_bus(sim); 216 cpi->base_transfer_speed = 150000; 217 cpi->transport = XPORT_SAS; 218 cpi->transport_version = 0; 219 cpi->protocol = PROTO_SCSI; 220 cpi->protocol_version = SCSI_REV_2; 221 cpi->ccb_h.status = CAM_REQ_CMP; 222 break; 223 } 224 case XPT_RESET_BUS: 225 ccb->ccb_h.status = CAM_REQ_CMP; 226 break; 227 case XPT_RESET_DEV: 228 ccb->ccb_h.status = CAM_REQ_CMP; 229 break; 230 case XPT_GET_TRAN_SETTINGS: 231 { 232 struct ccb_trans_settings_sas *sas = 233 &ccb->cts.xport_specific.sas; 234 235 ccb->cts.protocol = PROTO_SCSI; 236 ccb->cts.protocol_version = SCSI_REV_2; 237 ccb->cts.transport = XPORT_SAS; 238 ccb->cts.transport_version = 0; 239 240 sas->valid &= ~CTS_SAS_VALID_SPEED; 241 sas->bitrate = 150000; 242 243 ccb->ccb_h.status = CAM_REQ_CMP; 244 break; 245 } 246 case XPT_SET_TRAN_SETTINGS: 247 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 248 break; 249 case XPT_SCSI_IO: 250 { 251 struct ccb_hdr *ccbh = &ccb->ccb_h; 252 struct ccb_scsiio *csio = &ccb->csio; 253 254 ccbh->status = CAM_REQ_INPROG; 255 if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) { 256 ccbh->status = CAM_REQ_INVALID; 257 break; 258 } 259 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 260 if (ccbh->flags & CAM_DATA_PHYS) { 261 ccbh->status = CAM_REQ_INVALID; 262 break; 263 } 264 if (ccbh->flags & CAM_SCATTER_VALID) { 265 ccbh->status = CAM_REQ_INVALID; 266 break; 267 } 268 } 269 270 ccbh->ccb_mfip_ptr = sc; 271 TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe); 272 mfi_startio(mfisc); 273 return; 274 } 275 default: 276 ccb->ccb_h.status = CAM_REQ_INVALID; 277 break; 278 } 279 280 xpt_done(ccb); 281 return; 282 } 283 284 static struct mfi_command * 285 mfip_start(void *data) 286 { 287 union ccb *ccb = data; 288 struct ccb_hdr *ccbh = &ccb->ccb_h; 289 struct ccb_scsiio *csio = &ccb->csio; 290 struct mfip_softc *sc; 291 struct mfi_pass_frame *pt; 292 struct mfi_command *cm; 293 uint32_t context = 0; 294 295 sc = ccbh->ccb_mfip_ptr; 296 297 if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL) 298 return (NULL); 299 300 /* Zero out the MFI frame */ 301 context = cm->cm_frame->header.context; 302 bzero(cm->cm_frame, sizeof(union mfi_frame)); 303 cm->cm_frame->header.context = context; 304 305 pt = &cm->cm_frame->pass; 306 pt->header.cmd = MFI_CMD_PD_SCSI_IO; 307 pt->header.cmd_status = 0; 308 pt->header.scsi_status = 0; 309 pt->header.target_id = ccbh->target_id; 310 pt->header.lun_id = ccbh->target_lun; 311 pt->header.flags = 0; 312 pt->header.timeout = 0; 313 pt->header.data_len = csio->dxfer_len; 314 pt->header.sense_len = MFI_SENSE_LEN; 315 pt->header.cdb_len = csio->cdb_len; 316 pt->sense_addr_lo = cm->cm_sense_busaddr; 317 pt->sense_addr_hi = 0; 318 if (ccbh->flags & CAM_CDB_POINTER) 319 bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len); 320 else 321 bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len); 322 cm->cm_complete = mfip_done; 323 cm->cm_private = ccb; 324 cm->cm_sg = &pt->sgl; 325 cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE; 326 cm->cm_data = csio->data_ptr; 327 cm->cm_len = csio->dxfer_len; 328 switch (ccbh->flags & CAM_DIR_MASK) { 329 case CAM_DIR_IN: 330 cm->cm_flags = MFI_CMD_DATAIN; 331 break; 332 case CAM_DIR_OUT: 333 cm->cm_flags = MFI_CMD_DATAOUT; 334 break; 335 case CAM_DIR_NONE: 336 default: 337 cm->cm_data = NULL; 338 cm->cm_len = 0; 339 cm->cm_flags = 0; 340 break; 341 } 342 343 TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe); 344 return (cm); 345 } 346 347 static void 348 mfip_done(struct mfi_command *cm) 349 { 350 union ccb *ccb = cm->cm_private; 351 struct ccb_hdr *ccbh = &ccb->ccb_h; 352 struct ccb_scsiio *csio = &ccb->csio; 353 struct mfi_pass_frame *pt; 354 355 pt = &cm->cm_frame->pass; 356 357 switch (pt->header.cmd_status) { 358 case MFI_STAT_OK: 359 { 360 uint8_t command, device; 361 362 ccbh->status = CAM_REQ_CMP; 363 csio->scsi_status = pt->header.scsi_status; 364 if (ccbh->flags & CAM_CDB_POINTER) 365 command = csio->cdb_io.cdb_ptr[0]; 366 else 367 command = csio->cdb_io.cdb_bytes[0]; 368 if (command == INQUIRY) { 369 device = csio->data_ptr[0] & 0x1f; 370 if ((device == T_DIRECT) || (device == T_PROCESSOR)) 371 csio->data_ptr[0] = 372 (csio->data_ptr[0] & 0xe0) | T_NODEVICE; 373 } 374 break; 375 } 376 case MFI_STAT_SCSI_DONE_WITH_ERROR: 377 { 378 int sense_len; 379 380 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 381 csio->scsi_status = pt->header.scsi_status; 382 sense_len = min(pt->header.sense_len, sizeof(struct scsi_sense_data)); 383 bzero(&csio->sense_data, sizeof(struct scsi_sense_data)); 384 bcopy(&cm->cm_sense->data[0], &csio->sense_data, sense_len); 385 break; 386 } 387 case MFI_STAT_DEVICE_NOT_FOUND: 388 ccbh->status = CAM_SEL_TIMEOUT; 389 break; 390 case MFI_STAT_SCSI_IO_FAILED: 391 ccbh->status = CAM_REQ_CMP_ERR; 392 csio->scsi_status = pt->header.scsi_status; 393 break; 394 default: 395 ccbh->status = CAM_REQ_CMP_ERR; 396 csio->scsi_status = pt->header.scsi_status; 397 break; 398 } 399 400 mfi_release_command(cm); 401 xpt_done(ccb); 402 } 403 404 static void 405 mfip_cam_poll(struct cam_sim *sim) 406 { 407 return; 408 } 409