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 * $FreeBSD: src/sys/dev/mfi/mfi_cam.c,v 1.5 2010/12/06 17:02:56 jhb Exp $ 27 */ 28 29 #include "opt_mfi.h" 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/malloc.h> 35 #include <sys/module.h> 36 #include <sys/bus.h> 37 #include <sys/conf.h> 38 #include <sys/eventhandler.h> 39 #include <sys/rman.h> 40 #include <sys/bus_dma.h> 41 #include <sys/buf2.h> 42 #include <sys/ioccom.h> 43 #include <sys/uio.h> 44 #include <sys/proc.h> 45 #include <sys/signalvar.h> 46 47 #include <bus/cam/cam.h> 48 #include <bus/cam/cam_ccb.h> 49 #include <bus/cam/cam_debug.h> 50 #include <bus/cam/cam_sim.h> 51 #include <bus/cam/cam_xpt_sim.h> 52 #include <bus/cam/scsi/scsi_all.h> 53 #include <bus/cam/scsi/scsi_message.h> 54 55 #include <sys/bus.h> 56 #include <sys/conf.h> 57 #include <machine/md_var.h> 58 #include <sys/rman.h> 59 60 #include <dev/raid/mfi/mfireg.h> 61 #include <dev/raid/mfi/mfi_ioctl.h> 62 #include <dev/raid/mfi/mfivar.h> 63 64 struct mfip_softc { 65 device_t dev; 66 struct mfi_softc *mfi_sc; 67 struct cam_devq *devq; 68 struct cam_sim *sim; 69 struct cam_path *path; 70 }; 71 72 static int mfip_probe(device_t); 73 static int mfip_attach(device_t); 74 static int mfip_detach(device_t); 75 static void mfip_cam_action(struct cam_sim *, union ccb *); 76 static void mfip_cam_poll(struct cam_sim *); 77 static struct mfi_command * mfip_start(void *); 78 static void mfip_done(struct mfi_command *cm); 79 80 static devclass_t mfip_devclass; 81 static device_method_t mfip_methods[] = { 82 DEVMETHOD(device_probe, mfip_probe), 83 DEVMETHOD(device_attach, mfip_attach), 84 DEVMETHOD(device_detach, mfip_detach), 85 {0, 0} 86 }; 87 static driver_t mfip_driver = { 88 "mfip", 89 mfip_methods, 90 sizeof(struct mfip_softc) 91 }; 92 DRIVER_MODULE(mfip, mfi, mfip_driver, mfip_devclass, 0, 0); 93 MODULE_DEPEND(mfip, cam, 1, 1, 1); 94 MODULE_DEPEND(mfip, mfi, 1, 1, 1); 95 96 #define ccb_mfip_ptr sim_priv.entries[0].ptr 97 98 static int 99 mfip_probe(device_t dev) 100 { 101 102 device_set_desc(dev, "SCSI Passthrough Bus"); 103 return (0); 104 } 105 106 static int 107 mfip_attach(device_t dev) 108 { 109 struct mfip_softc *sc; 110 struct mfi_softc *mfisc; 111 112 sc = device_get_softc(dev); 113 if (sc == NULL) 114 return (EINVAL); 115 116 mfisc = device_get_softc(device_get_parent(dev)); 117 sc->dev = dev; 118 sc->mfi_sc = mfisc; 119 mfisc->mfi_cam_start = mfip_start; 120 121 if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL) 122 return (ENOMEM); 123 124 sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc, 125 device_get_unit(dev), &mfisc->mfi_io_lock, 1, 126 MFI_SCSI_MAX_CMDS, sc->devq); 127 if (sc->sim == NULL) { 128 device_printf(dev, "CAM SIM attach failed\n"); 129 return (EINVAL); 130 } 131 132 lockmgr(&mfisc->mfi_io_lock, LK_EXCLUSIVE); 133 if (xpt_bus_register(sc->sim, 0) != 0) { 134 device_printf(dev, "XPT bus registration failed\n"); 135 cam_sim_free(sc->sim); 136 lockmgr(&mfisc->mfi_io_lock, LK_RELEASE); 137 return (EINVAL); 138 } 139 lockmgr(&mfisc->mfi_io_lock, LK_RELEASE); 140 141 return (0); 142 } 143 144 static int 145 mfip_detach(device_t dev) 146 { 147 struct mfip_softc *sc; 148 149 sc = device_get_softc(dev); 150 if (sc == NULL) 151 return (EINVAL); 152 153 if (sc->sim != NULL) { 154 lockmgr(&sc->mfi_sc->mfi_io_lock, LK_EXCLUSIVE); 155 xpt_bus_deregister(cam_sim_path(sc->sim)); 156 cam_sim_free(sc->sim); 157 lockmgr(&sc->mfi_sc->mfi_io_lock, LK_RELEASE); 158 } 159 160 return (0); 161 } 162 163 static void 164 mfip_cam_action(struct cam_sim *sim, union ccb *ccb) 165 { 166 struct mfip_softc *sc = cam_sim_softc(sim); 167 struct mfi_softc *mfisc = sc->mfi_sc; 168 169 KKASSERT(lockstatus(&mfisc->mfi_io_lock, curthread) != 0); 170 171 switch (ccb->ccb_h.func_code) { 172 case XPT_PATH_INQ: 173 { 174 struct ccb_pathinq *cpi = &ccb->cpi; 175 176 cpi->version_num = 1; 177 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16; 178 cpi->target_sprt = 0; 179 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN; 180 cpi->hba_eng_cnt = 0; 181 cpi->max_target = MFI_SCSI_MAX_TARGETS; 182 cpi->max_lun = MFI_SCSI_MAX_LUNS; 183 cpi->initiator_id = MFI_SCSI_INITIATOR_ID; 184 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 185 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN); 186 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 187 cpi->unit_number = cam_sim_unit(sim); 188 cpi->bus_id = cam_sim_bus(sim); 189 cpi->base_transfer_speed = 150000; 190 cpi->transport = XPORT_SAS; 191 cpi->transport_version = 0; 192 cpi->protocol = PROTO_SCSI; 193 cpi->protocol_version = SCSI_REV_2; 194 cpi->ccb_h.status = CAM_REQ_CMP; 195 break; 196 } 197 case XPT_RESET_BUS: 198 ccb->ccb_h.status = CAM_REQ_CMP; 199 break; 200 case XPT_RESET_DEV: 201 ccb->ccb_h.status = CAM_REQ_CMP; 202 break; 203 case XPT_GET_TRAN_SETTINGS: 204 { 205 struct ccb_trans_settings_sas *sas = 206 &ccb->cts.xport_specific.sas; 207 208 ccb->cts.protocol = PROTO_SCSI; 209 ccb->cts.protocol_version = SCSI_REV_2; 210 ccb->cts.transport = XPORT_SAS; 211 ccb->cts.transport_version = 0; 212 213 sas->valid &= ~CTS_SAS_VALID_SPEED; 214 sas->bitrate = 150000; 215 216 ccb->ccb_h.status = CAM_REQ_CMP; 217 break; 218 } 219 case XPT_SET_TRAN_SETTINGS: 220 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 221 break; 222 case XPT_SCSI_IO: 223 { 224 struct ccb_hdr *ccbh = &ccb->ccb_h; 225 struct ccb_scsiio *csio = &ccb->csio; 226 227 ccbh->status = CAM_REQ_INPROG; 228 if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) { 229 ccbh->status = CAM_REQ_INVALID; 230 break; 231 } 232 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 233 if (ccbh->flags & CAM_DATA_PHYS) { 234 ccbh->status = CAM_REQ_INVALID; 235 break; 236 } 237 if (ccbh->flags & CAM_SCATTER_VALID) { 238 ccbh->status = CAM_REQ_INVALID; 239 break; 240 } 241 } 242 243 ccbh->ccb_mfip_ptr = sc; 244 TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe); 245 mfi_startio(mfisc); 246 return; 247 } 248 default: 249 ccb->ccb_h.status = CAM_REQ_INVALID; 250 break; 251 } 252 253 xpt_done(ccb); 254 return; 255 } 256 257 static struct mfi_command * 258 mfip_start(void *data) 259 { 260 union ccb *ccb = data; 261 struct ccb_hdr *ccbh = &ccb->ccb_h; 262 struct ccb_scsiio *csio = &ccb->csio; 263 struct mfip_softc *sc; 264 struct mfi_pass_frame *pt; 265 struct mfi_command *cm; 266 267 sc = ccbh->ccb_mfip_ptr; 268 269 if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL) 270 return (NULL); 271 272 pt = &cm->cm_frame->pass; 273 pt->header.cmd = MFI_CMD_PD_SCSI_IO; 274 pt->header.cmd_status = 0; 275 pt->header.scsi_status = 0; 276 pt->header.target_id = ccbh->target_id; 277 pt->header.lun_id = ccbh->target_lun; 278 pt->header.flags = 0; 279 pt->header.timeout = 0; 280 pt->header.data_len = csio->dxfer_len; 281 pt->header.sense_len = MFI_SENSE_LEN; 282 pt->header.cdb_len = csio->cdb_len; 283 pt->sense_addr_lo = cm->cm_sense_busaddr; 284 pt->sense_addr_hi = 0; 285 if (ccbh->flags & CAM_CDB_POINTER) 286 bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len); 287 else 288 bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len); 289 cm->cm_complete = mfip_done; 290 cm->cm_private = ccb; 291 cm->cm_sg = &pt->sgl; 292 cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE; 293 cm->cm_data = csio->data_ptr; 294 cm->cm_len = csio->dxfer_len; 295 switch (ccbh->flags & CAM_DIR_MASK) { 296 case CAM_DIR_IN: 297 cm->cm_flags = MFI_CMD_DATAIN; 298 break; 299 case CAM_DIR_OUT: 300 cm->cm_flags = MFI_CMD_DATAOUT; 301 break; 302 case CAM_DIR_NONE: 303 default: 304 cm->cm_data = NULL; 305 cm->cm_len = 0; 306 cm->cm_flags = 0; 307 break; 308 } 309 310 TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe); 311 return (cm); 312 } 313 314 static void 315 mfip_done(struct mfi_command *cm) 316 { 317 union ccb *ccb = cm->cm_private; 318 struct ccb_hdr *ccbh = &ccb->ccb_h; 319 struct ccb_scsiio *csio = &ccb->csio; 320 struct mfip_softc *sc; 321 struct mfi_pass_frame *pt; 322 323 sc = ccbh->ccb_mfip_ptr; 324 pt = &cm->cm_frame->pass; 325 326 switch (pt->header.cmd_status) { 327 case MFI_STAT_OK: 328 { 329 uint8_t command, device; 330 331 ccbh->status = CAM_REQ_CMP; 332 csio->scsi_status = pt->header.scsi_status; 333 if (ccbh->flags & CAM_CDB_POINTER) 334 command = csio->cdb_io.cdb_ptr[0]; 335 else 336 command = csio->cdb_io.cdb_bytes[0]; 337 if (command == INQUIRY) { 338 device = csio->data_ptr[0] & 0x1f; 339 if ((device == T_DIRECT) || (device == T_PROCESSOR)) 340 csio->data_ptr[0] = 341 (csio->data_ptr[0] & 0xe0) | T_NODEVICE; 342 } 343 break; 344 } 345 case MFI_STAT_SCSI_DONE_WITH_ERROR: 346 { 347 int sense_len; 348 349 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 350 csio->scsi_status = pt->header.scsi_status; 351 sense_len = min(pt->header.sense_len, sizeof(struct scsi_sense_data)); 352 bzero(&csio->sense_data, sizeof(struct scsi_sense_data)); 353 bcopy(&cm->cm_sense->data[0], &csio->sense_data, sense_len); 354 break; 355 } 356 case MFI_STAT_DEVICE_NOT_FOUND: 357 ccbh->status = CAM_SEL_TIMEOUT; 358 break; 359 case MFI_STAT_SCSI_IO_FAILED: 360 ccbh->status = CAM_REQ_CMP_ERR; 361 csio->scsi_status = pt->header.scsi_status; 362 break; 363 default: 364 ccbh->status = CAM_REQ_CMP_ERR; 365 csio->scsi_status = pt->header.scsi_status; 366 break; 367 } 368 369 mfi_release_command(cm); 370 xpt_done(ccb); 371 } 372 373 static void 374 mfip_cam_poll(struct cam_sim *sim) 375 { 376 return; 377 } 378