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