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 1.7 2011/10/13 20:06:19 marius Exp $ 27 * FreeBSD projects/head_mfi/ r232949 28 */ 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/bus.h> 38 #include <sys/conf.h> 39 #include <sys/eventhandler.h> 40 #include <sys/rman.h> 41 #include <sys/bus_dma.h> 42 #include <sys/buf2.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 <machine/md_var.h> 56 57 #include <dev/raid/mfi/mfireg.h> 58 #include <dev/raid/mfi/mfi_ioctl.h> 59 #include <dev/raid/mfi/mfivar.h> 60 61 struct mfip_softc { 62 device_t dev; 63 struct mfi_softc *mfi_sc; 64 struct cam_devq *devq; 65 struct cam_sim *sim; 66 struct cam_path *path; 67 }; 68 69 static int mfip_probe(device_t); 70 static int mfip_attach(device_t); 71 static int mfip_detach(device_t); 72 static void mfip_cam_action(struct cam_sim *, union ccb *); 73 static void mfip_cam_poll(struct cam_sim *); 74 static struct mfi_command * mfip_start(void *); 75 static void mfip_done(struct mfi_command *cm); 76 77 static devclass_t mfip_devclass; 78 static device_method_t mfip_methods[] = { 79 DEVMETHOD(device_probe, mfip_probe), 80 DEVMETHOD(device_attach, mfip_attach), 81 DEVMETHOD(device_detach, mfip_detach), 82 DEVMETHOD_END 83 }; 84 static driver_t mfip_driver = { 85 "mfip", 86 mfip_methods, 87 sizeof(struct mfip_softc) 88 }; 89 DRIVER_MODULE(mfip, mfi, mfip_driver, mfip_devclass, NULL, NULL); 90 MODULE_DEPEND(mfip, cam, 1, 1, 1); 91 MODULE_DEPEND(mfip, mfi, 1, 1, 1); 92 93 #define ccb_mfip_ptr sim_priv.entries[0].ptr 94 95 static int 96 mfip_probe(device_t dev) 97 { 98 99 device_set_desc(dev, "SCSI Passthrough Bus"); 100 return (0); 101 } 102 103 static int 104 mfip_attach(device_t dev) 105 { 106 struct mfip_softc *sc; 107 struct mfi_softc *mfisc; 108 109 sc = device_get_softc(dev); 110 if (sc == NULL) 111 return (EINVAL); 112 113 mfisc = device_get_softc(device_get_parent(dev)); 114 sc->dev = dev; 115 sc->mfi_sc = mfisc; 116 mfisc->mfi_cam_start = mfip_start; 117 118 if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL) 119 return (ENOMEM); 120 121 sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc, 122 device_get_unit(dev), &mfisc->mfi_io_lock, 1, 123 MFI_SCSI_MAX_CMDS, sc->devq); 124 cam_simq_release(sc->devq); 125 if (sc->sim == NULL) { 126 device_printf(dev, "CAM SIM attach failed\n"); 127 return (EINVAL); 128 } 129 130 lockmgr(&mfisc->mfi_io_lock, LK_EXCLUSIVE); 131 if (xpt_bus_register(sc->sim, 0) != 0) { 132 device_printf(dev, "XPT bus registration failed\n"); 133 cam_sim_free(sc->sim); 134 lockmgr(&mfisc->mfi_io_lock, LK_RELEASE); 135 return (EINVAL); 136 } 137 lockmgr(&mfisc->mfi_io_lock, LK_RELEASE); 138 139 return (0); 140 } 141 142 static int 143 mfip_detach(device_t dev) 144 { 145 struct mfip_softc *sc; 146 147 sc = device_get_softc(dev); 148 if (sc == NULL) 149 return (EINVAL); 150 151 if (sc->sim != NULL) { 152 lockmgr(&sc->mfi_sc->mfi_io_lock, LK_EXCLUSIVE); 153 xpt_bus_deregister(cam_sim_path(sc->sim)); 154 cam_sim_free(sc->sim); 155 lockmgr(&sc->mfi_sc->mfi_io_lock, LK_RELEASE); 156 } 157 158 return (0); 159 } 160 161 static void 162 mfip_cam_action(struct cam_sim *sim, union ccb *ccb) 163 { 164 struct mfip_softc *sc = cam_sim_softc(sim); 165 struct mfi_softc *mfisc = sc->mfi_sc; 166 167 mfi_lockassert(&mfisc->mfi_io_lock); 168 169 switch (ccb->ccb_h.func_code) { 170 case XPT_PATH_INQ: 171 { 172 struct ccb_pathinq *cpi = &ccb->cpi; 173 174 cpi->version_num = 1; 175 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16; 176 cpi->target_sprt = 0; 177 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN; 178 cpi->hba_eng_cnt = 0; 179 cpi->max_target = MFI_SCSI_MAX_TARGETS; 180 cpi->max_lun = MFI_SCSI_MAX_LUNS; 181 cpi->initiator_id = MFI_SCSI_INITIATOR_ID; 182 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 183 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN); 184 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 185 cpi->unit_number = cam_sim_unit(sim); 186 cpi->bus_id = cam_sim_bus(sim); 187 cpi->base_transfer_speed = 150000; 188 cpi->transport = XPORT_SAS; 189 cpi->transport_version = 0; 190 cpi->protocol = PROTO_SCSI; 191 cpi->protocol_version = SCSI_REV_2; 192 cpi->ccb_h.status = CAM_REQ_CMP; 193 break; 194 } 195 case XPT_RESET_BUS: 196 ccb->ccb_h.status = CAM_REQ_CMP; 197 break; 198 case XPT_RESET_DEV: 199 ccb->ccb_h.status = CAM_REQ_CMP; 200 break; 201 case XPT_GET_TRAN_SETTINGS: 202 { 203 struct ccb_trans_settings_sas *sas = 204 &ccb->cts.xport_specific.sas; 205 206 ccb->cts.protocol = PROTO_SCSI; 207 ccb->cts.protocol_version = SCSI_REV_2; 208 ccb->cts.transport = XPORT_SAS; 209 ccb->cts.transport_version = 0; 210 211 sas->valid &= ~CTS_SAS_VALID_SPEED; 212 sas->bitrate = 150000; 213 214 ccb->ccb_h.status = CAM_REQ_CMP; 215 break; 216 } 217 case XPT_SET_TRAN_SETTINGS: 218 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 219 break; 220 case XPT_SCSI_IO: 221 { 222 struct ccb_hdr *ccbh = &ccb->ccb_h; 223 struct ccb_scsiio *csio = &ccb->csio; 224 225 ccbh->status = CAM_REQ_INPROG; 226 if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) { 227 ccbh->status = CAM_REQ_INVALID; 228 break; 229 } 230 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 231 if (ccbh->flags & CAM_DATA_PHYS) { 232 ccbh->status = CAM_REQ_INVALID; 233 break; 234 } 235 if (ccbh->flags & CAM_SCATTER_VALID) { 236 ccbh->status = CAM_REQ_INVALID; 237 break; 238 } 239 } 240 241 ccbh->ccb_mfip_ptr = sc; 242 TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe); 243 mfi_startio(mfisc); 244 return; 245 } 246 default: 247 ccb->ccb_h.status = CAM_REQ_INVALID; 248 break; 249 } 250 251 xpt_done(ccb); 252 return; 253 } 254 255 static struct mfi_command * 256 mfip_start(void *data) 257 { 258 union ccb *ccb = data; 259 struct ccb_hdr *ccbh = &ccb->ccb_h; 260 struct ccb_scsiio *csio = &ccb->csio; 261 struct mfip_softc *sc; 262 struct mfi_pass_frame *pt; 263 struct mfi_command *cm; 264 uint32_t context = 0; 265 266 sc = ccbh->ccb_mfip_ptr; 267 268 if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL) 269 return (NULL); 270 271 /* Zero out the MFI frame */ 272 context = cm->cm_frame->header.context; 273 bzero(cm->cm_frame, sizeof(union mfi_frame)); 274 cm->cm_frame->header.context = context; 275 276 pt = &cm->cm_frame->pass; 277 pt->header.cmd = MFI_CMD_PD_SCSI_IO; 278 pt->header.cmd_status = 0; 279 pt->header.scsi_status = 0; 280 pt->header.target_id = ccbh->target_id; 281 pt->header.lun_id = ccbh->target_lun; 282 pt->header.flags = 0; 283 pt->header.timeout = 0; 284 pt->header.data_len = csio->dxfer_len; 285 pt->header.sense_len = MFI_SENSE_LEN; 286 pt->header.cdb_len = csio->cdb_len; 287 pt->sense_addr_lo = cm->cm_sense_busaddr; 288 pt->sense_addr_hi = 0; 289 if (ccbh->flags & CAM_CDB_POINTER) 290 bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len); 291 else 292 bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len); 293 cm->cm_complete = mfip_done; 294 cm->cm_private = ccb; 295 cm->cm_sg = &pt->sgl; 296 cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE; 297 cm->cm_data = csio->data_ptr; 298 cm->cm_len = csio->dxfer_len; 299 switch (ccbh->flags & CAM_DIR_MASK) { 300 case CAM_DIR_IN: 301 cm->cm_flags = MFI_CMD_DATAIN; 302 break; 303 case CAM_DIR_OUT: 304 cm->cm_flags = MFI_CMD_DATAOUT; 305 break; 306 case CAM_DIR_NONE: 307 default: 308 cm->cm_data = NULL; 309 cm->cm_len = 0; 310 cm->cm_flags = 0; 311 break; 312 } 313 314 TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe); 315 return (cm); 316 } 317 318 static void 319 mfip_done(struct mfi_command *cm) 320 { 321 union ccb *ccb = cm->cm_private; 322 struct ccb_hdr *ccbh = &ccb->ccb_h; 323 struct ccb_scsiio *csio = &ccb->csio; 324 struct mfi_pass_frame *pt; 325 326 pt = &cm->cm_frame->pass; 327 328 switch (pt->header.cmd_status) { 329 case MFI_STAT_OK: 330 { 331 uint8_t command, device; 332 333 ccbh->status = CAM_REQ_CMP; 334 csio->scsi_status = pt->header.scsi_status; 335 if (ccbh->flags & CAM_CDB_POINTER) 336 command = csio->cdb_io.cdb_ptr[0]; 337 else 338 command = csio->cdb_io.cdb_bytes[0]; 339 if (command == INQUIRY) { 340 device = csio->data_ptr[0] & 0x1f; 341 if ((device == T_DIRECT) || (device == T_PROCESSOR)) 342 csio->data_ptr[0] = 343 (csio->data_ptr[0] & 0xe0) | T_NODEVICE; 344 } 345 break; 346 } 347 case MFI_STAT_SCSI_DONE_WITH_ERROR: 348 { 349 int sense_len; 350 351 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 352 csio->scsi_status = pt->header.scsi_status; 353 if (pt->header.sense_len < csio->sense_len) 354 csio->sense_resid = csio->sense_len - 355 pt->header.sense_len; 356 else 357 csio->sense_resid = 0; 358 sense_len = min(pt->header.sense_len, 359 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