1144966Svkashyap/* 2169400Sscottl * Copyright (c) 2004-07 Applied Micro Circuits Corporation. 3144966Svkashyap * Copyright (c) 2004-05 Vinod Kashyap. 4144966Svkashyap * All rights reserved. 5144966Svkashyap * 6144966Svkashyap * Redistribution and use in source and binary forms, with or without 7144966Svkashyap * modification, are permitted provided that the following conditions 8144966Svkashyap * are met: 9144966Svkashyap * 1. Redistributions of source code must retain the above copyright 10144966Svkashyap * notice, this list of conditions and the following disclaimer. 11144966Svkashyap * 2. Redistributions in binary form must reproduce the above copyright 12144966Svkashyap * notice, this list of conditions and the following disclaimer in the 13144966Svkashyap * documentation and/or other materials provided with the distribution. 14144966Svkashyap * 15144966Svkashyap * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16144966Svkashyap * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17144966Svkashyap * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18144966Svkashyap * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19144966Svkashyap * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20144966Svkashyap * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21144966Svkashyap * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22144966Svkashyap * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23144966Svkashyap * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24144966Svkashyap * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25144966Svkashyap * SUCH DAMAGE. 26144966Svkashyap * 27144966Svkashyap * $FreeBSD$ 28144966Svkashyap */ 29144966Svkashyap 30144966Svkashyap/* 31144966Svkashyap * AMCC'S 3ware driver for 9000 series storage controllers. 32144966Svkashyap * 33144966Svkashyap * Author: Vinod Kashyap 34169400Sscottl * Modifications by: Adam Radford 35172496Sscottl * Modifications by: Manjunath Ranganathaiah 36144966Svkashyap */ 37144966Svkashyap 38144966Svkashyap 39144966Svkashyap/* 40144966Svkashyap * FreeBSD CAM related functions. 41144966Svkashyap */ 42144966Svkashyap 43144966Svkashyap 44149968Sobrien#include <dev/twa/tw_osl_includes.h> 45144966Svkashyap 46144966Svkashyap#include <cam/cam.h> 47144966Svkashyap#include <cam/cam_ccb.h> 48144966Svkashyap#include <cam/cam_sim.h> 49144966Svkashyap#include <cam/cam_xpt_sim.h> 50144966Svkashyap#include <cam/cam_debug.h> 51144966Svkashyap#include <cam/cam_periph.h> 52144966Svkashyap 53144966Svkashyap#include <cam/scsi/scsi_all.h> 54144966Svkashyap#include <cam/scsi/scsi_message.h> 55144966Svkashyap 56144966Svkashyapstatic TW_VOID twa_action(struct cam_sim *sim, union ccb *ccb); 57144966Svkashyapstatic TW_VOID twa_poll(struct cam_sim *sim); 58144966Svkashyap 59144966Svkashyapstatic TW_INT32 tw_osli_execute_scsi(struct tw_osli_req_context *req, 60144966Svkashyap union ccb *ccb); 61144966Svkashyap 62144966Svkashyap 63144966Svkashyap 64144966Svkashyap/* 65144966Svkashyap * Function name: tw_osli_cam_attach 66144966Svkashyap * Description: Attaches the driver to CAM. 67144966Svkashyap * 68144966Svkashyap * Input: sc -- ptr to OSL internal ctlr context 69144966Svkashyap * Output: None 70144966Svkashyap * Return value: 0 -- success 71144966Svkashyap * non-zero-- failure 72144966Svkashyap */ 73144966SvkashyapTW_INT32 74144966Svkashyaptw_osli_cam_attach(struct twa_softc *sc) 75144966Svkashyap{ 76144966Svkashyap struct cam_devq *devq; 77144966Svkashyap 78144966Svkashyap tw_osli_dbg_dprintf(3, sc, "entered"); 79144966Svkashyap 80144966Svkashyap /* 81144966Svkashyap * Create the device queue for our SIM. 82144966Svkashyap */ 83212008Sdelphij if ((devq = cam_simq_alloc(TW_OSLI_MAX_NUM_IOS)) == NULL) { 84144966Svkashyap tw_osli_printf(sc, "error = %d", 85144966Svkashyap TW_CL_SEVERITY_ERROR_STRING, 86144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 87144966Svkashyap 0x2100, 88144966Svkashyap "Failed to create SIM device queue", 89144966Svkashyap ENOMEM); 90144966Svkashyap return(ENOMEM); 91144966Svkashyap } 92144966Svkashyap 93144966Svkashyap /* 94208969Sdelphij * Create a SIM entry. Though we can support TW_OSLI_MAX_NUM_REQUESTS 95144966Svkashyap * simultaneous requests, we claim to be able to handle only 96208969Sdelphij * TW_OSLI_MAX_NUM_IOS (two less), so that we always have a request 97208969Sdelphij * packet available to service ioctls and AENs. 98144966Svkashyap */ 99144966Svkashyap tw_osli_dbg_dprintf(3, sc, "Calling cam_sim_alloc"); 100144966Svkashyap sc->sim = cam_sim_alloc(twa_action, twa_poll, "twa", sc, 101172496Sscottl device_get_unit(sc->bus_dev), sc->sim_lock, 102208969Sdelphij TW_OSLI_MAX_NUM_IOS, 1, devq); 103144966Svkashyap if (sc->sim == NULL) { 104144966Svkashyap cam_simq_free(devq); 105144966Svkashyap tw_osli_printf(sc, "error = %d", 106144966Svkashyap TW_CL_SEVERITY_ERROR_STRING, 107144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 108144966Svkashyap 0x2101, 109144966Svkashyap "Failed to create a SIM entry", 110144966Svkashyap ENOMEM); 111144966Svkashyap return(ENOMEM); 112144966Svkashyap } 113144966Svkashyap 114144966Svkashyap /* 115144966Svkashyap * Register the bus. 116144966Svkashyap */ 117144966Svkashyap tw_osli_dbg_dprintf(3, sc, "Calling xpt_bus_register"); 118172496Sscottl mtx_lock(sc->sim_lock); 119170872Sscottl if (xpt_bus_register(sc->sim, sc->bus_dev, 0) != CAM_SUCCESS) { 120144966Svkashyap cam_sim_free(sc->sim, TRUE); 121144966Svkashyap sc->sim = NULL; /* so cam_detach will not try to free it */ 122144966Svkashyap tw_osli_printf(sc, "error = %d", 123144966Svkashyap TW_CL_SEVERITY_ERROR_STRING, 124144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 125144966Svkashyap 0x2102, 126144966Svkashyap "Failed to register the bus", 127144966Svkashyap ENXIO); 128172496Sscottl mtx_unlock(sc->sim_lock); 129144966Svkashyap return(ENXIO); 130144966Svkashyap } 131144966Svkashyap 132144966Svkashyap tw_osli_dbg_dprintf(3, sc, "Calling xpt_create_path"); 133144966Svkashyap if (xpt_create_path(&sc->path, NULL, 134144966Svkashyap cam_sim_path(sc->sim), 135144966Svkashyap CAM_TARGET_WILDCARD, 136144966Svkashyap CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 137144966Svkashyap xpt_bus_deregister(cam_sim_path (sc->sim)); 138144966Svkashyap /* Passing TRUE to cam_sim_free will free the devq as well. */ 139144966Svkashyap cam_sim_free(sc->sim, TRUE); 140144966Svkashyap tw_osli_printf(sc, "error = %d", 141144966Svkashyap TW_CL_SEVERITY_ERROR_STRING, 142144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 143144966Svkashyap 0x2103, 144144966Svkashyap "Failed to create path", 145144966Svkashyap ENXIO); 146172496Sscottl mtx_unlock(sc->sim_lock); 147144966Svkashyap return(ENXIO); 148144966Svkashyap } 149172496Sscottl mtx_unlock(sc->sim_lock); 150144966Svkashyap 151144966Svkashyap tw_osli_dbg_dprintf(3, sc, "exiting"); 152144966Svkashyap return(0); 153144966Svkashyap} 154144966Svkashyap 155144966Svkashyap 156144966Svkashyap 157144966Svkashyap/* 158144966Svkashyap * Function name: tw_osli_cam_detach 159144966Svkashyap * Description: Detaches the driver from CAM. 160144966Svkashyap * 161144966Svkashyap * Input: sc -- ptr to OSL internal ctlr context 162144966Svkashyap * Output: None 163144966Svkashyap * Return value: None 164144966Svkashyap */ 165144966SvkashyapTW_VOID 166144966Svkashyaptw_osli_cam_detach(struct twa_softc *sc) 167144966Svkashyap{ 168144966Svkashyap tw_osli_dbg_dprintf(3, sc, "entered"); 169144966Svkashyap 170172496Sscottl mtx_lock(sc->sim_lock); 171172496Sscottl 172144966Svkashyap if (sc->path) 173144966Svkashyap xpt_free_path(sc->path); 174144966Svkashyap if (sc->sim) { 175144966Svkashyap xpt_bus_deregister(cam_sim_path(sc->sim)); 176144966Svkashyap /* Passing TRUE to cam_sim_free will free the devq as well. */ 177144966Svkashyap cam_sim_free(sc->sim, TRUE); 178144966Svkashyap } 179172496Sscottl /* It's ok have 1 hold count while destroying the mutex */ 180172496Sscottl mtx_destroy(sc->sim_lock); 181144966Svkashyap} 182144966Svkashyap 183144966Svkashyap 184144966Svkashyap 185144966Svkashyap/* 186144966Svkashyap * Function name: tw_osli_execute_scsi 187144966Svkashyap * Description: Build a fw cmd, based on a CAM style ccb, and 188144966Svkashyap * send it down. 189144966Svkashyap * 190144966Svkashyap * Input: req -- ptr to OSL internal request context 191144966Svkashyap * ccb -- ptr to CAM style ccb 192144966Svkashyap * Output: None 193144966Svkashyap * Return value: 0 -- success 194144966Svkashyap * non-zero-- failure 195144966Svkashyap */ 196144966SvkashyapTW_INT32 197144966Svkashyaptw_osli_execute_scsi(struct tw_osli_req_context *req, union ccb *ccb) 198144966Svkashyap{ 199144966Svkashyap struct twa_softc *sc = req->ctlr; 200144966Svkashyap struct tw_cl_req_packet *req_pkt; 201144966Svkashyap struct tw_cl_scsi_req_packet *scsi_req; 202144966Svkashyap struct ccb_hdr *ccb_h = &(ccb->ccb_h); 203144966Svkashyap struct ccb_scsiio *csio = &(ccb->csio); 204144966Svkashyap TW_INT32 error; 205144966Svkashyap 206144966Svkashyap tw_osli_dbg_dprintf(10, sc, "SCSI I/O request 0x%x", 207144966Svkashyap csio->cdb_io.cdb_bytes[0]); 208144966Svkashyap 209144966Svkashyap if (ccb_h->target_id >= TW_CL_MAX_NUM_UNITS) { 210144966Svkashyap tw_osli_dbg_dprintf(3, sc, "Invalid target. PTL = %x %x %x", 211144966Svkashyap ccb_h->path_id, ccb_h->target_id, ccb_h->target_lun); 212144966Svkashyap ccb_h->status |= CAM_TID_INVALID; 213144966Svkashyap xpt_done(ccb); 214144966Svkashyap return(1); 215144966Svkashyap } 216144966Svkashyap if (ccb_h->target_lun >= TW_CL_MAX_NUM_LUNS) { 217144966Svkashyap tw_osli_dbg_dprintf(3, sc, "Invalid lun. PTL = %x %x %x", 218144966Svkashyap ccb_h->path_id, ccb_h->target_id, ccb_h->target_lun); 219144966Svkashyap ccb_h->status |= CAM_LUN_INVALID; 220144966Svkashyap xpt_done(ccb); 221144966Svkashyap return(1); 222144966Svkashyap } 223144966Svkashyap 224144966Svkashyap if(ccb_h->flags & CAM_CDB_PHYS) { 225144966Svkashyap tw_osli_printf(sc, "", 226144966Svkashyap TW_CL_SEVERITY_ERROR_STRING, 227144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 228144966Svkashyap 0x2105, 229144966Svkashyap "Physical CDB address!"); 230208969Sdelphij ccb_h->status = CAM_REQ_INVALID; 231144966Svkashyap xpt_done(ccb); 232144966Svkashyap return(1); 233144966Svkashyap } 234144966Svkashyap 235144966Svkashyap /* 236144966Svkashyap * We are going to work on this request. Mark it as enqueued (though 237144966Svkashyap * we don't actually queue it...) 238144966Svkashyap */ 239144966Svkashyap ccb_h->status |= CAM_SIM_QUEUED; 240144966Svkashyap 241144966Svkashyap if((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 242144966Svkashyap if(ccb_h->flags & CAM_DIR_IN) 243144966Svkashyap req->flags |= TW_OSLI_REQ_FLAGS_DATA_IN; 244144966Svkashyap else 245144966Svkashyap req->flags |= TW_OSLI_REQ_FLAGS_DATA_OUT; 246144966Svkashyap } 247144966Svkashyap 248144966Svkashyap /* Build the CL understood request packet for SCSI cmds. */ 249144966Svkashyap req_pkt = &req->req_pkt; 250144966Svkashyap req_pkt->status = 0; 251144966Svkashyap req_pkt->tw_osl_callback = tw_osl_complete_io; 252144966Svkashyap scsi_req = &(req_pkt->gen_req_pkt.scsi_req); 253144966Svkashyap scsi_req->unit = ccb_h->target_id; 254144966Svkashyap scsi_req->lun = ccb_h->target_lun; 255144966Svkashyap scsi_req->sense_len = 0; 256144966Svkashyap scsi_req->sense_data = (TW_UINT8 *)(&csio->sense_data); 257144966Svkashyap scsi_req->scsi_status = 0; 258144966Svkashyap if(ccb_h->flags & CAM_CDB_POINTER) 259144966Svkashyap scsi_req->cdb = csio->cdb_io.cdb_ptr; 260144966Svkashyap else 261144966Svkashyap scsi_req->cdb = csio->cdb_io.cdb_bytes; 262144966Svkashyap scsi_req->cdb_len = csio->cdb_len; 263144966Svkashyap 264246713Skib if (csio->dxfer_len > TW_CL_MAX_IO_SIZE) { 265246713Skib tw_osli_printf(sc, "size = %d", 266144966Svkashyap TW_CL_SEVERITY_ERROR_STRING, 267144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 268246713Skib 0x2106, 269246713Skib "I/O size too big", 270246713Skib csio->dxfer_len); 271246713Skib ccb_h->status = CAM_REQ_TOO_BIG; 272144966Svkashyap ccb_h->status &= ~CAM_SIM_QUEUED; 273144966Svkashyap xpt_done(ccb); 274144966Svkashyap return(1); 275144966Svkashyap } 276248583Skib if ((ccb_h->flags & CAM_DATA_MASK) == CAM_DATA_VADDR) { 277248583Skib if ((req->length = csio->dxfer_len) != 0) { 278248583Skib req->data = csio->data_ptr; 279248583Skib scsi_req->sgl_entries = 1; 280248583Skib } 281248583Skib } else 282248583Skib req->flags |= TW_OSLI_REQ_FLAGS_CCB; 283212008Sdelphij req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000); 284212008Sdelphij 285144966Svkashyap /* 286144966Svkashyap * twa_map_load_data_callback will fill in the SGL, 287144966Svkashyap * and submit the I/O. 288144966Svkashyap */ 289144966Svkashyap error = tw_osli_map_request(req); 290212008Sdelphij if ((error) && (req->flags & TW_OSLI_REQ_FLAGS_FAILED)) { 291212008Sdelphij req->deadline = 0; 292212008Sdelphij ccb_h->status = CAM_REQ_CMP_ERR; 293212008Sdelphij ccb_h->status &= ~CAM_SIM_QUEUED; 294212008Sdelphij xpt_done(ccb); 295212008Sdelphij } 296144966Svkashyap return(error); 297144966Svkashyap} 298144966Svkashyap 299144966Svkashyap 300144966Svkashyap 301144966Svkashyap/* 302144966Svkashyap * Function name: twa_action 303144966Svkashyap * Description: Driver entry point for CAM's use. 304144966Svkashyap * 305144966Svkashyap * Input: sim -- sim corresponding to the ctlr 306144966Svkashyap * ccb -- ptr to CAM request 307144966Svkashyap * Output: None 308144966Svkashyap * Return value: None 309144966Svkashyap */ 310144966SvkashyapTW_VOID 311144966Svkashyaptwa_action(struct cam_sim *sim, union ccb *ccb) 312144966Svkashyap{ 313144966Svkashyap struct twa_softc *sc = (struct twa_softc *)cam_sim_softc(sim); 314144966Svkashyap struct ccb_hdr *ccb_h = &(ccb->ccb_h); 315144966Svkashyap 316144966Svkashyap switch (ccb_h->func_code) { 317144966Svkashyap case XPT_SCSI_IO: /* SCSI I/O */ 318144966Svkashyap { 319144966Svkashyap struct tw_osli_req_context *req; 320144966Svkashyap 321208969Sdelphij req = tw_osli_get_request(sc); 322208969Sdelphij if (req == NULL) { 323208969Sdelphij tw_osli_dbg_dprintf(2, sc, "Cannot get request pkt."); 324144966Svkashyap /* 325144966Svkashyap * Freeze the simq to maintain ccb ordering. The next 326144966Svkashyap * ccb that gets completed will unfreeze the simq. 327144966Svkashyap */ 328212008Sdelphij ccb_h->status &= ~CAM_SIM_QUEUED; 329144966Svkashyap ccb_h->status |= CAM_REQUEUE_REQ; 330144966Svkashyap xpt_done(ccb); 331144966Svkashyap break; 332144966Svkashyap } 333212008Sdelphij 334212008Sdelphij if ((tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) { 335212008Sdelphij ccb_h->status &= ~CAM_SIM_QUEUED; 336212008Sdelphij ccb_h->status |= CAM_REQUEUE_REQ; 337212008Sdelphij xpt_done(ccb); 338212008Sdelphij tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 339212008Sdelphij break; 340212008Sdelphij } 341212008Sdelphij 342144966Svkashyap req->req_handle.osl_req_ctxt = req; 343208969Sdelphij req->req_handle.is_io = TW_CL_TRUE; 344144966Svkashyap req->orig_req = ccb; 345144966Svkashyap if (tw_osli_execute_scsi(req, ccb)) 346144966Svkashyap tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 347144966Svkashyap break; 348144966Svkashyap } 349144966Svkashyap 350144966Svkashyap case XPT_ABORT: 351144966Svkashyap tw_osli_dbg_dprintf(2, sc, "Abort request."); 352144966Svkashyap ccb_h->status = CAM_UA_ABORT; 353144966Svkashyap xpt_done(ccb); 354144966Svkashyap break; 355144966Svkashyap 356144966Svkashyap case XPT_RESET_BUS: 357212008Sdelphij tw_cl_create_event(&(sc->ctlr_handle), TW_CL_FALSE, 358144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 359144966Svkashyap 0x2108, 0x3, TW_CL_SEVERITY_INFO_STRING, 360144966Svkashyap "Received Reset Bus request from CAM", 361144966Svkashyap " "); 362144966Svkashyap 363212008Sdelphij tw_cl_set_reset_needed(&(sc->ctlr_handle)); 364212008Sdelphij ccb_h->status = CAM_REQ_CMP; 365144966Svkashyap xpt_done(ccb); 366144966Svkashyap break; 367144966Svkashyap 368144966Svkashyap case XPT_SET_TRAN_SETTINGS: 369144966Svkashyap tw_osli_dbg_dprintf(3, sc, "XPT_SET_TRAN_SETTINGS"); 370144966Svkashyap 371144966Svkashyap /* 372144966Svkashyap * This command is not supported, since it's very specific 373144966Svkashyap * to SCSI, and we are doing ATA. 374144966Svkashyap */ 375144966Svkashyap ccb_h->status = CAM_FUNC_NOTAVAIL; 376144966Svkashyap xpt_done(ccb); 377144966Svkashyap break; 378144966Svkashyap 379144966Svkashyap case XPT_GET_TRAN_SETTINGS: 380144966Svkashyap { 381144966Svkashyap struct ccb_trans_settings *cts = &ccb->cts; 382163816Smjacob struct ccb_trans_settings_scsi *scsi = 383163816Smjacob &cts->proto_specific.scsi; 384163816Smjacob struct ccb_trans_settings_spi *spi = 385163816Smjacob &cts->xport_specific.spi; 386144966Svkashyap 387163816Smjacob cts->protocol = PROTO_SCSI; 388163816Smjacob cts->protocol_version = SCSI_REV_2; 389163816Smjacob cts->transport = XPORT_SPI; 390163816Smjacob cts->transport_version = 2; 391163816Smjacob 392163816Smjacob spi->valid = CTS_SPI_VALID_DISC; 393163816Smjacob spi->flags = CTS_SPI_FLAGS_DISC_ENB; 394163816Smjacob scsi->valid = CTS_SCSI_VALID_TQ; 395163816Smjacob scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 396163816Smjacob tw_osli_dbg_dprintf(3, sc, "XPT_GET_TRAN_SETTINGS"); 397144966Svkashyap ccb_h->status = CAM_REQ_CMP; 398144966Svkashyap xpt_done(ccb); 399144966Svkashyap break; 400144966Svkashyap } 401144966Svkashyap 402144966Svkashyap case XPT_CALC_GEOMETRY: 403144966Svkashyap tw_osli_dbg_dprintf(3, sc, "XPT_CALC_GEOMETRY"); 404144966Svkashyap cam_calc_geometry(&ccb->ccg, 1/* extended */); 405144966Svkashyap xpt_done(ccb); 406144966Svkashyap break; 407144966Svkashyap 408144966Svkashyap case XPT_PATH_INQ: /* Path inquiry -- get twa properties */ 409144966Svkashyap { 410144966Svkashyap struct ccb_pathinq *path_inq = &ccb->cpi; 411144966Svkashyap 412144966Svkashyap tw_osli_dbg_dprintf(3, sc, "XPT_PATH_INQ request"); 413144966Svkashyap 414144966Svkashyap path_inq->version_num = 1; 415144966Svkashyap path_inq->hba_inquiry = 0; 416144966Svkashyap path_inq->target_sprt = 0; 417144966Svkashyap path_inq->hba_misc = 0; 418144966Svkashyap path_inq->hba_eng_cnt = 0; 419144966Svkashyap path_inq->max_target = TW_CL_MAX_NUM_UNITS; 420144966Svkashyap path_inq->max_lun = TW_CL_MAX_NUM_LUNS - 1; 421144966Svkashyap path_inq->unit_number = cam_sim_unit(sim); 422144966Svkashyap path_inq->bus_id = cam_sim_bus(sim); 423152213Svkashyap path_inq->initiator_id = TW_CL_MAX_NUM_UNITS; 424144966Svkashyap path_inq->base_transfer_speed = 100000; 425144966Svkashyap strncpy(path_inq->sim_vid, "FreeBSD", SIM_IDLEN); 426144966Svkashyap strncpy(path_inq->hba_vid, "3ware", HBA_IDLEN); 427144966Svkashyap strncpy(path_inq->dev_name, cam_sim_name(sim), DEV_IDLEN); 428163816Smjacob path_inq->transport = XPORT_SPI; 429163816Smjacob path_inq->transport_version = 2; 430163816Smjacob path_inq->protocol = PROTO_SCSI; 431163816Smjacob path_inq->protocol_version = SCSI_REV_2; 432212008Sdelphij path_inq->maxio = TW_CL_MAX_IO_SIZE; 433144966Svkashyap ccb_h->status = CAM_REQ_CMP; 434144966Svkashyap xpt_done(ccb); 435144966Svkashyap break; 436144966Svkashyap } 437144966Svkashyap 438144966Svkashyap default: 439144966Svkashyap tw_osli_dbg_dprintf(3, sc, "func_code = %x", ccb_h->func_code); 440144966Svkashyap ccb_h->status = CAM_REQ_INVALID; 441144966Svkashyap xpt_done(ccb); 442144966Svkashyap break; 443144966Svkashyap } 444144966Svkashyap} 445144966Svkashyap 446144966Svkashyap 447144966Svkashyap 448144966Svkashyap/* 449144966Svkashyap * Function name: twa_poll 450144966Svkashyap * Description: Driver entry point called when interrupts are not 451144966Svkashyap * available. 452144966Svkashyap * 453144966Svkashyap * Input: sim -- sim corresponding to the controller 454144966Svkashyap * Output: None 455144966Svkashyap * Return value: None 456144966Svkashyap */ 457144966SvkashyapTW_VOID 458144966Svkashyaptwa_poll(struct cam_sim *sim) 459144966Svkashyap{ 460144966Svkashyap struct twa_softc *sc = (struct twa_softc *)(cam_sim_softc(sim)); 461144966Svkashyap 462144966Svkashyap tw_osli_dbg_dprintf(3, sc, "entering; sc = %p", sc); 463145688Svkashyap tw_cl_interrupt(&(sc->ctlr_handle)); 464144966Svkashyap tw_osli_dbg_dprintf(3, sc, "exiting; sc = %p", sc); 465144966Svkashyap} 466144966Svkashyap 467144966Svkashyap 468144966Svkashyap 469144966Svkashyap/* 470144966Svkashyap * Function name: tw_osli_request_bus_scan 471144966Svkashyap * Description: Requests CAM for a scan of the bus. 472144966Svkashyap * 473144966Svkashyap * Input: sc -- ptr to per ctlr structure 474144966Svkashyap * Output: None 475144966Svkashyap * Return value: 0 -- success 476144966Svkashyap * non-zero-- failure 477144966Svkashyap */ 478144966SvkashyapTW_INT32 479144966Svkashyaptw_osli_request_bus_scan(struct twa_softc *sc) 480144966Svkashyap{ 481144966Svkashyap union ccb *ccb; 482144966Svkashyap 483144966Svkashyap tw_osli_dbg_dprintf(3, sc, "entering"); 484144966Svkashyap 485152213Svkashyap /* If we get here before sc->sim is initialized, return an error. */ 486152213Svkashyap if (!(sc->sim)) 487152213Svkashyap return(ENXIO); 488203108Smav if ((ccb = xpt_alloc_ccb()) == NULL) 489144966Svkashyap return(ENOMEM); 490172496Sscottl mtx_lock(sc->sim_lock); 491249468Smav if (xpt_create_path(&ccb->ccb_h.path, NULL, cam_sim_path(sc->sim), 492203108Smav CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 493203108Smav xpt_free_ccb(ccb); 494172496Sscottl mtx_unlock(sc->sim_lock); 495144966Svkashyap return(EIO); 496169400Sscottl } 497144966Svkashyap 498203108Smav xpt_rescan(ccb); 499172496Sscottl mtx_unlock(sc->sim_lock); 500144966Svkashyap return(0); 501144966Svkashyap} 502144966Svkashyap 503144966Svkashyap 504144966Svkashyap 505144966Svkashyap/* 506144966Svkashyap * Function name: tw_osli_disallow_new_requests 507144966Svkashyap * Description: Calls the appropriate CAM function, so as to freeze 508144966Svkashyap * the flow of new requests from CAM to this controller. 509144966Svkashyap * 510144966Svkashyap * Input: sc -- ptr to OSL internal ctlr context 511208969Sdelphij * req_handle -- ptr to request handle sent by OSL. 512144966Svkashyap * Output: None 513144966Svkashyap * Return value: None 514144966Svkashyap */ 515144966SvkashyapTW_VOID 516208969Sdelphijtw_osli_disallow_new_requests(struct twa_softc *sc, 517208969Sdelphij struct tw_cl_req_handle *req_handle) 518144966Svkashyap{ 519208969Sdelphij /* Only freeze/release the simq for IOs */ 520208969Sdelphij if (req_handle->is_io) { 521208969Sdelphij struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 522208969Sdelphij union ccb *ccb = (union ccb *)(req->orig_req); 523208969Sdelphij 524172496Sscottl xpt_freeze_simq(sc->sim, 1); 525208969Sdelphij ccb->ccb_h.status |= CAM_RELEASE_SIMQ; 526172496Sscottl } 527144966Svkashyap} 528144966Svkashyap 529144966Svkashyap 530144966Svkashyap 531144966Svkashyap/* 532212008Sdelphij * Function name: tw_osl_timeout 533212008Sdelphij * Description: Call to timeout(). 534152213Svkashyap * 535212008Sdelphij * Input: req_handle -- ptr to request handle sent by OSL. 536152213Svkashyap * Output: None 537152213Svkashyap * Return value: None 538152213Svkashyap */ 539152213SvkashyapTW_VOID 540212008Sdelphijtw_osl_timeout(struct tw_cl_req_handle *req_handle) 541152213Svkashyap{ 542212008Sdelphij struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 543212008Sdelphij union ccb *ccb = (union ccb *)(req->orig_req); 544212008Sdelphij struct ccb_hdr *ccb_h = &(ccb->ccb_h); 545212008Sdelphij 546212008Sdelphij req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000); 547152213Svkashyap} 548152213Svkashyap 549152213Svkashyap 550152213Svkashyap 551152213Svkashyap/* 552212008Sdelphij * Function name: tw_osl_untimeout 553212008Sdelphij * Description: Inverse of call to timeout(). 554212008Sdelphij * 555212008Sdelphij * Input: req_handle -- ptr to request handle sent by OSL. 556212008Sdelphij * Output: None 557212008Sdelphij * Return value: None 558212008Sdelphij */ 559212008SdelphijTW_VOID 560212008Sdelphijtw_osl_untimeout(struct tw_cl_req_handle *req_handle) 561212008Sdelphij{ 562212008Sdelphij struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 563212008Sdelphij 564212008Sdelphij req->deadline = 0; 565212008Sdelphij} 566212008Sdelphij 567212008Sdelphij 568212008Sdelphij 569212008Sdelphij/* 570144966Svkashyap * Function name: tw_osl_scan_bus 571144966Svkashyap * Description: CL calls this function to request for a bus scan. 572144966Svkashyap * 573144966Svkashyap * Input: ctlr_handle -- ptr to controller handle 574144966Svkashyap * Output: None 575144966Svkashyap * Return value: None 576144966Svkashyap */ 577144966SvkashyapTW_VOID 578144966Svkashyaptw_osl_scan_bus(struct tw_cl_ctlr_handle *ctlr_handle) 579144966Svkashyap{ 580144966Svkashyap struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt; 581144966Svkashyap TW_INT32 error; 582144966Svkashyap 583144966Svkashyap if ((error = tw_osli_request_bus_scan(sc))) 584144966Svkashyap tw_osli_printf(sc, "error = %d", 585144966Svkashyap TW_CL_SEVERITY_ERROR_STRING, 586144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 587144966Svkashyap 0x2109, 588144966Svkashyap "Bus scan request to CAM failed", 589144966Svkashyap error); 590144966Svkashyap} 591144966Svkashyap 592144966Svkashyap 593144966Svkashyap 594144966Svkashyap/* 595144966Svkashyap * Function name: tw_osl_complete_io 596144966Svkashyap * Description: Called to complete CAM scsi requests. 597144966Svkashyap * 598144966Svkashyap * Input: req_handle -- ptr to request handle 599144966Svkashyap * Output: None 600144966Svkashyap * Return value: None 601144966Svkashyap */ 602144966SvkashyapTW_VOID 603144966Svkashyaptw_osl_complete_io(struct tw_cl_req_handle *req_handle) 604144966Svkashyap{ 605144966Svkashyap struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 606144966Svkashyap struct tw_cl_req_packet *req_pkt = 607144966Svkashyap (struct tw_cl_req_packet *)(&req->req_pkt); 608144966Svkashyap struct tw_cl_scsi_req_packet *scsi_req; 609144966Svkashyap struct twa_softc *sc = req->ctlr; 610144966Svkashyap union ccb *ccb = (union ccb *)(req->orig_req); 611144966Svkashyap 612144966Svkashyap tw_osli_dbg_dprintf(10, sc, "entering"); 613144966Svkashyap 614144966Svkashyap if (req->state != TW_OSLI_REQ_STATE_BUSY) 615144966Svkashyap tw_osli_printf(sc, "request = %p, status = %d", 616144966Svkashyap TW_CL_SEVERITY_ERROR_STRING, 617144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 618144966Svkashyap 0x210A, 619144966Svkashyap "Unposted command completed!!", 620144966Svkashyap req, req->state); 621144966Svkashyap 622144966Svkashyap /* 623144966Svkashyap * Remove request from the busy queue. Just mark it complete. 624144966Svkashyap * There's no need to move it into the complete queue as we are 625144966Svkashyap * going to be done with it right now. 626144966Svkashyap */ 627144966Svkashyap req->state = TW_OSLI_REQ_STATE_COMPLETE; 628144966Svkashyap tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q); 629144966Svkashyap 630144966Svkashyap tw_osli_unmap_request(req); 631144966Svkashyap 632212008Sdelphij req->deadline = 0; 633144966Svkashyap if (req->error_code) { 634144966Svkashyap /* This request never got submitted to the firmware. */ 635144966Svkashyap if (req->error_code == EBUSY) { 636144966Svkashyap /* 637152213Svkashyap * Cmd queue is full, or the Common Layer is out of 638208969Sdelphij * resources. The simq will already have been frozen. 639208969Sdelphij * When this ccb gets completed will unfreeze the simq. 640144966Svkashyap */ 641144966Svkashyap ccb->ccb_h.status |= CAM_REQUEUE_REQ; 642144966Svkashyap } 643144966Svkashyap else if (req->error_code == EFBIG) 644144966Svkashyap ccb->ccb_h.status = CAM_REQ_TOO_BIG; 645144966Svkashyap else 646144966Svkashyap ccb->ccb_h.status = CAM_REQ_CMP_ERR; 647144966Svkashyap } else { 648144966Svkashyap scsi_req = &(req_pkt->gen_req_pkt.scsi_req); 649144966Svkashyap if (req_pkt->status == TW_CL_ERR_REQ_SUCCESS) 650144966Svkashyap ccb->ccb_h.status = CAM_REQ_CMP; 651144966Svkashyap else { 652144966Svkashyap if (req_pkt->status & TW_CL_ERR_REQ_INVALID_TARGET) 653237460Smav ccb->ccb_h.status |= CAM_SEL_TIMEOUT; 654144966Svkashyap else if (req_pkt->status & TW_CL_ERR_REQ_INVALID_LUN) 655237460Smav ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 656144966Svkashyap else if (req_pkt->status & TW_CL_ERR_REQ_SCSI_ERROR) 657144966Svkashyap ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR; 658144966Svkashyap else if (req_pkt->status & TW_CL_ERR_REQ_BUS_RESET) 659212008Sdelphij ccb->ccb_h.status |= (CAM_REQUEUE_REQ | CAM_SCSI_BUS_RESET); 660144966Svkashyap /* 661144966Svkashyap * If none of the above errors occurred, simply 662144966Svkashyap * mark completion error. 663144966Svkashyap */ 664144966Svkashyap if (ccb->ccb_h.status == 0) 665144966Svkashyap ccb->ccb_h.status = CAM_REQ_CMP_ERR; 666144966Svkashyap 667144966Svkashyap if (req_pkt->status & TW_CL_ERR_REQ_AUTO_SENSE_VALID) { 668144966Svkashyap ccb->csio.sense_len = scsi_req->sense_len; 669144966Svkashyap ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 670144966Svkashyap } 671144966Svkashyap } 672144966Svkashyap 673144966Svkashyap ccb->csio.scsi_status = scsi_req->scsi_status; 674144966Svkashyap } 675144966Svkashyap 676144966Svkashyap ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 677172496Sscottl mtx_lock(sc->sim_lock); 678144966Svkashyap xpt_done(ccb); 679172496Sscottl mtx_unlock(sc->sim_lock); 680144966Svkashyap if (! req->error_code) 681144966Svkashyap /* twa_action will free the request otherwise */ 682144966Svkashyap tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 683144966Svkashyap} 684144966Svkashyap 685