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