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