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 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_mfi.h" 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/malloc.h> 36 #include <sys/module.h> 37 #include <sys/selinfo.h> 38 #include <sys/bus.h> 39 #include <sys/conf.h> 40 #include <sys/eventhandler.h> 41 #include <sys/rman.h> 42 #include <sys/bus_dma.h> 43 #include <sys/bio.h> 44 #include <sys/ioccom.h> 45 #include <sys/uio.h> 46 #include <sys/proc.h> 47 #include <sys/signalvar.h> 48 #include <sys/sysctl.h> 49 50 #include <cam/cam.h> 51 #include <cam/cam_ccb.h> 52 #include <cam/cam_debug.h> 53 #include <cam/cam_sim.h> 54 #include <cam/cam_xpt_sim.h> 55 #include <cam/scsi/scsi_all.h> 56 #include <cam/scsi/scsi_message.h> 57 58 #include <machine/md_var.h> 59 #include <machine/bus.h> 60 #include <machine/resource.h> 61 62 #include <dev/mfi/mfireg.h> 63 #include <dev/mfi/mfi_ioctl.h> 64 #include <dev/mfi/mfivar.h> 65 66 struct mfip_softc { 67 device_t dev; 68 struct mfi_softc *mfi_sc; 69 struct cam_devq *devq; 70 struct cam_sim *sim; 71 struct cam_path *path; 72 }; 73 74 static int mfip_probe(device_t); 75 static int mfip_attach(device_t); 76 static int mfip_detach(device_t); 77 static void mfip_cam_action(struct cam_sim *, union ccb *); 78 static void mfip_cam_poll(struct cam_sim *); 79 static struct mfi_command * mfip_start(void *); 80 static void mfip_done(struct mfi_command *cm); 81 82 static int mfi_allow_disks = 0; 83 TUNABLE_INT("hw.mfi.allow_cam_disk_passthrough", &mfi_allow_disks); 84 SYSCTL_INT(_hw_mfi, OID_AUTO, allow_cam_disk_passthrough, CTLFLAG_RD, 85 &mfi_allow_disks, 0, "event message locale"); 86 87 static devclass_t mfip_devclass; 88 static device_method_t mfip_methods[] = { 89 DEVMETHOD(device_probe, mfip_probe), 90 DEVMETHOD(device_attach, mfip_attach), 91 DEVMETHOD(device_detach, mfip_detach), 92 {0, 0} 93 }; 94 static driver_t mfip_driver = { 95 "mfip", 96 mfip_methods, 97 sizeof(struct mfip_softc) 98 }; 99 DRIVER_MODULE(mfip, mfi, mfip_driver, mfip_devclass, 0, 0); 100 MODULE_DEPEND(mfip, cam, 1, 1, 1); 101 MODULE_DEPEND(mfip, mfi, 1, 1, 1); 102 103 #define ccb_mfip_ptr sim_priv.entries[0].ptr 104 105 static int 106 mfip_probe(device_t dev) 107 { 108 109 device_set_desc(dev, "SCSI Passthrough Bus"); 110 return (0); 111 } 112 113 static int 114 mfip_attach(device_t dev) 115 { 116 struct mfip_softc *sc; 117 struct mfi_softc *mfisc; 118 119 sc = device_get_softc(dev); 120 if (sc == NULL) 121 return (EINVAL); 122 123 mfisc = device_get_softc(device_get_parent(dev)); 124 sc->dev = dev; 125 sc->mfi_sc = mfisc; 126 mfisc->mfi_cam_start = mfip_start; 127 128 if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL) 129 return (ENOMEM); 130 131 sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc, 132 device_get_unit(dev), &mfisc->mfi_io_lock, 1, 133 MFI_SCSI_MAX_CMDS, sc->devq); 134 if (sc->sim == NULL) { 135 cam_simq_free(sc->devq); 136 device_printf(dev, "CAM SIM attach failed\n"); 137 return (EINVAL); 138 } 139 140 mtx_lock(&mfisc->mfi_io_lock); 141 if (xpt_bus_register(sc->sim, dev, 0) != 0) { 142 device_printf(dev, "XPT bus registration failed\n"); 143 cam_sim_free(sc->sim, FALSE); 144 cam_simq_free(sc->devq); 145 mtx_unlock(&mfisc->mfi_io_lock); 146 return (EINVAL); 147 } 148 mtx_unlock(&mfisc->mfi_io_lock); 149 150 return (0); 151 } 152 153 static int 154 mfip_detach(device_t dev) 155 { 156 struct mfip_softc *sc; 157 158 sc = device_get_softc(dev); 159 if (sc == NULL) 160 return (EINVAL); 161 162 if (sc->sim != NULL) { 163 mtx_lock(&sc->mfi_sc->mfi_io_lock); 164 xpt_bus_deregister(cam_sim_path(sc->sim)); 165 cam_sim_free(sc->sim, FALSE); 166 mtx_unlock(&sc->mfi_sc->mfi_io_lock); 167 } 168 169 if (sc->devq != NULL) 170 cam_simq_free(sc->devq); 171 172 return (0); 173 } 174 175 static void 176 mfip_cam_action(struct cam_sim *sim, union ccb *ccb) 177 { 178 struct mfip_softc *sc = cam_sim_softc(sim); 179 struct mfi_softc *mfisc = sc->mfi_sc; 180 181 mtx_assert(&mfisc->mfi_io_lock, MA_OWNED); 182 183 switch (ccb->ccb_h.func_code) { 184 case XPT_PATH_INQ: 185 { 186 struct ccb_pathinq *cpi = &ccb->cpi; 187 188 cpi->version_num = 1; 189 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16; 190 cpi->target_sprt = 0; 191 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN; 192 cpi->hba_eng_cnt = 0; 193 cpi->max_target = MFI_SCSI_MAX_TARGETS; 194 cpi->max_lun = MFI_SCSI_MAX_LUNS; 195 cpi->initiator_id = MFI_SCSI_INITIATOR_ID; 196 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 197 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN); 198 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 199 cpi->unit_number = cam_sim_unit(sim); 200 cpi->bus_id = cam_sim_bus(sim); 201 cpi->base_transfer_speed = 150000; 202 cpi->transport = XPORT_SAS; 203 cpi->transport_version = 0; 204 cpi->protocol = PROTO_SCSI; 205 cpi->protocol_version = SCSI_REV_2; 206 cpi->ccb_h.status = CAM_REQ_CMP; 207 break; 208 } 209 case XPT_RESET_BUS: 210 ccb->ccb_h.status = CAM_REQ_CMP; 211 break; 212 case XPT_RESET_DEV: 213 ccb->ccb_h.status = CAM_REQ_CMP; 214 break; 215 case XPT_GET_TRAN_SETTINGS: 216 { 217 struct ccb_trans_settings_sas *sas = 218 &ccb->cts.xport_specific.sas; 219 220 ccb->cts.protocol = PROTO_SCSI; 221 ccb->cts.protocol_version = SCSI_REV_2; 222 ccb->cts.transport = XPORT_SAS; 223 ccb->cts.transport_version = 0; 224 225 sas->valid &= ~CTS_SAS_VALID_SPEED; 226 sas->bitrate = 150000; 227 228 ccb->ccb_h.status = CAM_REQ_CMP; 229 break; 230 } 231 case XPT_SET_TRAN_SETTINGS: 232 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 233 break; 234 case XPT_SCSI_IO: 235 { 236 struct ccb_hdr *ccbh = &ccb->ccb_h; 237 struct ccb_scsiio *csio = &ccb->csio; 238 239 ccbh->status = CAM_REQ_INPROG; 240 if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) { 241 ccbh->status = CAM_REQ_INVALID; 242 break; 243 } 244 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 245 if (ccbh->flags & CAM_DATA_PHYS) { 246 ccbh->status = CAM_REQ_INVALID; 247 break; 248 } 249 if (ccbh->flags & CAM_SCATTER_VALID) { 250 ccbh->status = CAM_REQ_INVALID; 251 break; 252 } 253 } 254 255 ccbh->ccb_mfip_ptr = sc; 256 TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe); 257 mfi_startio(mfisc); 258 return; 259 } 260 default: 261 ccb->ccb_h.status = CAM_REQ_INVALID; 262 break; 263 } 264 265 xpt_done(ccb); 266 return; 267 } 268 269 static struct mfi_command * 270 mfip_start(void *data) 271 { 272 union ccb *ccb = data; 273 struct ccb_hdr *ccbh = &ccb->ccb_h; 274 struct ccb_scsiio *csio = &ccb->csio; 275 struct mfip_softc *sc; 276 struct mfi_pass_frame *pt; 277 struct mfi_command *cm; 278 uint32_t context = 0; 279 280 sc = ccbh->ccb_mfip_ptr; 281 282 if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL) 283 return (NULL); 284 285 /* Zero out the MFI frame */ 286 context = cm->cm_frame->header.context; 287 bzero(cm->cm_frame, sizeof(union mfi_frame)); 288 cm->cm_frame->header.context = context; 289 290 pt = &cm->cm_frame->pass; 291 pt->header.cmd = MFI_CMD_PD_SCSI_IO; 292 pt->header.cmd_status = 0; 293 pt->header.scsi_status = 0; 294 pt->header.target_id = ccbh->target_id; 295 pt->header.lun_id = ccbh->target_lun; 296 pt->header.flags = 0; 297 pt->header.timeout = 0; 298 pt->header.data_len = csio->dxfer_len; 299 pt->header.sense_len = MFI_SENSE_LEN; 300 pt->header.cdb_len = csio->cdb_len; 301 pt->sense_addr_lo = (uint32_t)cm->cm_sense_busaddr; 302 pt->sense_addr_hi = (uint32_t)((uint64_t)cm->cm_sense_busaddr >> 32); 303 if (ccbh->flags & CAM_CDB_POINTER) 304 bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len); 305 else 306 bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len); 307 cm->cm_complete = mfip_done; 308 cm->cm_private = ccb; 309 cm->cm_sg = &pt->sgl; 310 cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE; 311 cm->cm_data = csio->data_ptr; 312 cm->cm_len = csio->dxfer_len; 313 switch (ccbh->flags & CAM_DIR_MASK) { 314 case CAM_DIR_IN: 315 cm->cm_flags = MFI_CMD_DATAIN; 316 break; 317 case CAM_DIR_OUT: 318 cm->cm_flags = MFI_CMD_DATAOUT; 319 break; 320 case CAM_DIR_NONE: 321 default: 322 cm->cm_data = NULL; 323 cm->cm_len = 0; 324 cm->cm_flags = 0; 325 break; 326 } 327 328 TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe); 329 return (cm); 330 } 331 332 static void 333 mfip_done(struct mfi_command *cm) 334 { 335 union ccb *ccb = cm->cm_private; 336 struct ccb_hdr *ccbh = &ccb->ccb_h; 337 struct ccb_scsiio *csio = &ccb->csio; 338 struct mfip_softc *sc; 339 struct mfi_pass_frame *pt; 340 341 sc = ccbh->ccb_mfip_ptr; 342 pt = &cm->cm_frame->pass; 343 344 switch (pt->header.cmd_status) { 345 case MFI_STAT_OK: 346 { 347 uint8_t command, device; 348 349 ccbh->status = CAM_REQ_CMP; 350 csio->scsi_status = pt->header.scsi_status; 351 if (ccbh->flags & CAM_CDB_POINTER) 352 command = csio->cdb_io.cdb_ptr[0]; 353 else 354 command = csio->cdb_io.cdb_bytes[0]; 355 if (command == INQUIRY) { 356 device = csio->data_ptr[0] & 0x1f; 357 if ((!mfi_allow_disks && device == T_DIRECT) || 358 (device == T_PROCESSOR)) 359 csio->data_ptr[0] = 360 (csio->data_ptr[0] & 0xe0) | T_NODEVICE; 361 } 362 break; 363 } 364 case MFI_STAT_SCSI_DONE_WITH_ERROR: 365 { 366 int sense_len; 367 368 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 369 csio->scsi_status = pt->header.scsi_status; 370 if (pt->header.sense_len < csio->sense_len) 371 csio->sense_resid = csio->sense_len - 372 pt->header.sense_len; 373 else 374 csio->sense_resid = 0; 375 sense_len = min(pt->header.sense_len, 376 sizeof(struct scsi_sense_data)); 377 bzero(&csio->sense_data, sizeof(struct scsi_sense_data)); 378 bcopy(&cm->cm_sense->data[0], &csio->sense_data, sense_len); 379 break; 380 } 381 case MFI_STAT_DEVICE_NOT_FOUND: 382 ccbh->status = CAM_SEL_TIMEOUT; 383 break; 384 case MFI_STAT_SCSI_IO_FAILED: 385 ccbh->status = CAM_REQ_CMP_ERR; 386 csio->scsi_status = pt->header.scsi_status; 387 break; 388 default: 389 ccbh->status = CAM_REQ_CMP_ERR; 390 csio->scsi_status = pt->header.scsi_status; 391 break; 392 } 393 394 mfi_release_command(cm); 395 xpt_done(ccb); 396 } 397 398 static void 399 mfip_cam_poll(struct cam_sim *sim) 400 { 401 struct mfip_softc *sc = cam_sim_softc(sim); 402 struct mfi_softc *mfisc = sc->mfi_sc; 403 404 mfisc->mfi_intr_ptr(mfisc); 405 } 406 407