tw_osl_cam.c revision 246713
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: head/sys/dev/twa/tw_osl_cam.c 246713 2013-02-12 16:57:20Z kib $ 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 } 276246713Skib req->data = ccb; 277246713Skib req->length = csio->dxfer_len; 278246713Skib req->flags |= TW_OSLI_REQ_FLAGS_CCB; 279212008Sdelphij req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000); 280212008Sdelphij 281144966Svkashyap /* 282144966Svkashyap * twa_map_load_data_callback will fill in the SGL, 283144966Svkashyap * and submit the I/O. 284144966Svkashyap */ 285144966Svkashyap error = tw_osli_map_request(req); 286212008Sdelphij if ((error) && (req->flags & TW_OSLI_REQ_FLAGS_FAILED)) { 287212008Sdelphij req->deadline = 0; 288212008Sdelphij ccb_h->status = CAM_REQ_CMP_ERR; 289212008Sdelphij ccb_h->status &= ~CAM_SIM_QUEUED; 290212008Sdelphij xpt_done(ccb); 291212008Sdelphij } 292144966Svkashyap return(error); 293144966Svkashyap} 294144966Svkashyap 295144966Svkashyap 296144966Svkashyap 297144966Svkashyap/* 298144966Svkashyap * Function name: twa_action 299144966Svkashyap * Description: Driver entry point for CAM's use. 300144966Svkashyap * 301144966Svkashyap * Input: sim -- sim corresponding to the ctlr 302144966Svkashyap * ccb -- ptr to CAM request 303144966Svkashyap * Output: None 304144966Svkashyap * Return value: None 305144966Svkashyap */ 306144966SvkashyapTW_VOID 307144966Svkashyaptwa_action(struct cam_sim *sim, union ccb *ccb) 308144966Svkashyap{ 309144966Svkashyap struct twa_softc *sc = (struct twa_softc *)cam_sim_softc(sim); 310144966Svkashyap struct ccb_hdr *ccb_h = &(ccb->ccb_h); 311144966Svkashyap 312144966Svkashyap switch (ccb_h->func_code) { 313144966Svkashyap case XPT_SCSI_IO: /* SCSI I/O */ 314144966Svkashyap { 315144966Svkashyap struct tw_osli_req_context *req; 316144966Svkashyap 317208969Sdelphij req = tw_osli_get_request(sc); 318208969Sdelphij if (req == NULL) { 319208969Sdelphij tw_osli_dbg_dprintf(2, sc, "Cannot get request pkt."); 320144966Svkashyap /* 321144966Svkashyap * Freeze the simq to maintain ccb ordering. The next 322144966Svkashyap * ccb that gets completed will unfreeze the simq. 323144966Svkashyap */ 324212008Sdelphij ccb_h->status &= ~CAM_SIM_QUEUED; 325144966Svkashyap ccb_h->status |= CAM_REQUEUE_REQ; 326144966Svkashyap xpt_done(ccb); 327144966Svkashyap break; 328144966Svkashyap } 329212008Sdelphij 330212008Sdelphij if ((tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) { 331212008Sdelphij ccb_h->status &= ~CAM_SIM_QUEUED; 332212008Sdelphij ccb_h->status |= CAM_REQUEUE_REQ; 333212008Sdelphij xpt_done(ccb); 334212008Sdelphij tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 335212008Sdelphij break; 336212008Sdelphij } 337212008Sdelphij 338144966Svkashyap req->req_handle.osl_req_ctxt = req; 339208969Sdelphij req->req_handle.is_io = TW_CL_TRUE; 340144966Svkashyap req->orig_req = ccb; 341144966Svkashyap if (tw_osli_execute_scsi(req, ccb)) 342144966Svkashyap tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 343144966Svkashyap break; 344144966Svkashyap } 345144966Svkashyap 346144966Svkashyap case XPT_ABORT: 347144966Svkashyap tw_osli_dbg_dprintf(2, sc, "Abort request."); 348144966Svkashyap ccb_h->status = CAM_UA_ABORT; 349144966Svkashyap xpt_done(ccb); 350144966Svkashyap break; 351144966Svkashyap 352144966Svkashyap case XPT_RESET_BUS: 353212008Sdelphij tw_cl_create_event(&(sc->ctlr_handle), TW_CL_FALSE, 354144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 355144966Svkashyap 0x2108, 0x3, TW_CL_SEVERITY_INFO_STRING, 356144966Svkashyap "Received Reset Bus request from CAM", 357144966Svkashyap " "); 358144966Svkashyap 359212008Sdelphij tw_cl_set_reset_needed(&(sc->ctlr_handle)); 360212008Sdelphij ccb_h->status = CAM_REQ_CMP; 361144966Svkashyap xpt_done(ccb); 362144966Svkashyap break; 363144966Svkashyap 364144966Svkashyap case XPT_SET_TRAN_SETTINGS: 365144966Svkashyap tw_osli_dbg_dprintf(3, sc, "XPT_SET_TRAN_SETTINGS"); 366144966Svkashyap 367144966Svkashyap /* 368144966Svkashyap * This command is not supported, since it's very specific 369144966Svkashyap * to SCSI, and we are doing ATA. 370144966Svkashyap */ 371144966Svkashyap ccb_h->status = CAM_FUNC_NOTAVAIL; 372144966Svkashyap xpt_done(ccb); 373144966Svkashyap break; 374144966Svkashyap 375144966Svkashyap case XPT_GET_TRAN_SETTINGS: 376144966Svkashyap { 377144966Svkashyap struct ccb_trans_settings *cts = &ccb->cts; 378163816Smjacob struct ccb_trans_settings_scsi *scsi = 379163816Smjacob &cts->proto_specific.scsi; 380163816Smjacob struct ccb_trans_settings_spi *spi = 381163816Smjacob &cts->xport_specific.spi; 382144966Svkashyap 383163816Smjacob cts->protocol = PROTO_SCSI; 384163816Smjacob cts->protocol_version = SCSI_REV_2; 385163816Smjacob cts->transport = XPORT_SPI; 386163816Smjacob cts->transport_version = 2; 387163816Smjacob 388163816Smjacob spi->valid = CTS_SPI_VALID_DISC; 389163816Smjacob spi->flags = CTS_SPI_FLAGS_DISC_ENB; 390163816Smjacob scsi->valid = CTS_SCSI_VALID_TQ; 391163816Smjacob scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 392163816Smjacob tw_osli_dbg_dprintf(3, sc, "XPT_GET_TRAN_SETTINGS"); 393144966Svkashyap ccb_h->status = CAM_REQ_CMP; 394144966Svkashyap xpt_done(ccb); 395144966Svkashyap break; 396144966Svkashyap } 397144966Svkashyap 398144966Svkashyap case XPT_CALC_GEOMETRY: 399144966Svkashyap tw_osli_dbg_dprintf(3, sc, "XPT_CALC_GEOMETRY"); 400144966Svkashyap cam_calc_geometry(&ccb->ccg, 1/* extended */); 401144966Svkashyap xpt_done(ccb); 402144966Svkashyap break; 403144966Svkashyap 404144966Svkashyap case XPT_PATH_INQ: /* Path inquiry -- get twa properties */ 405144966Svkashyap { 406144966Svkashyap struct ccb_pathinq *path_inq = &ccb->cpi; 407144966Svkashyap 408144966Svkashyap tw_osli_dbg_dprintf(3, sc, "XPT_PATH_INQ request"); 409144966Svkashyap 410144966Svkashyap path_inq->version_num = 1; 411144966Svkashyap path_inq->hba_inquiry = 0; 412144966Svkashyap path_inq->target_sprt = 0; 413144966Svkashyap path_inq->hba_misc = 0; 414144966Svkashyap path_inq->hba_eng_cnt = 0; 415144966Svkashyap path_inq->max_target = TW_CL_MAX_NUM_UNITS; 416144966Svkashyap path_inq->max_lun = TW_CL_MAX_NUM_LUNS - 1; 417144966Svkashyap path_inq->unit_number = cam_sim_unit(sim); 418144966Svkashyap path_inq->bus_id = cam_sim_bus(sim); 419152213Svkashyap path_inq->initiator_id = TW_CL_MAX_NUM_UNITS; 420144966Svkashyap path_inq->base_transfer_speed = 100000; 421144966Svkashyap strncpy(path_inq->sim_vid, "FreeBSD", SIM_IDLEN); 422144966Svkashyap strncpy(path_inq->hba_vid, "3ware", HBA_IDLEN); 423144966Svkashyap strncpy(path_inq->dev_name, cam_sim_name(sim), DEV_IDLEN); 424163816Smjacob path_inq->transport = XPORT_SPI; 425163816Smjacob path_inq->transport_version = 2; 426163816Smjacob path_inq->protocol = PROTO_SCSI; 427163816Smjacob path_inq->protocol_version = SCSI_REV_2; 428212008Sdelphij path_inq->maxio = TW_CL_MAX_IO_SIZE; 429144966Svkashyap ccb_h->status = CAM_REQ_CMP; 430144966Svkashyap xpt_done(ccb); 431144966Svkashyap break; 432144966Svkashyap } 433144966Svkashyap 434144966Svkashyap default: 435144966Svkashyap tw_osli_dbg_dprintf(3, sc, "func_code = %x", ccb_h->func_code); 436144966Svkashyap ccb_h->status = CAM_REQ_INVALID; 437144966Svkashyap xpt_done(ccb); 438144966Svkashyap break; 439144966Svkashyap } 440144966Svkashyap} 441144966Svkashyap 442144966Svkashyap 443144966Svkashyap 444144966Svkashyap/* 445144966Svkashyap * Function name: twa_poll 446144966Svkashyap * Description: Driver entry point called when interrupts are not 447144966Svkashyap * available. 448144966Svkashyap * 449144966Svkashyap * Input: sim -- sim corresponding to the controller 450144966Svkashyap * Output: None 451144966Svkashyap * Return value: None 452144966Svkashyap */ 453144966SvkashyapTW_VOID 454144966Svkashyaptwa_poll(struct cam_sim *sim) 455144966Svkashyap{ 456144966Svkashyap struct twa_softc *sc = (struct twa_softc *)(cam_sim_softc(sim)); 457144966Svkashyap 458144966Svkashyap tw_osli_dbg_dprintf(3, sc, "entering; sc = %p", sc); 459145688Svkashyap tw_cl_interrupt(&(sc->ctlr_handle)); 460144966Svkashyap tw_osli_dbg_dprintf(3, sc, "exiting; sc = %p", sc); 461144966Svkashyap} 462144966Svkashyap 463144966Svkashyap 464144966Svkashyap 465144966Svkashyap/* 466144966Svkashyap * Function name: tw_osli_request_bus_scan 467144966Svkashyap * Description: Requests CAM for a scan of the bus. 468144966Svkashyap * 469144966Svkashyap * Input: sc -- ptr to per ctlr structure 470144966Svkashyap * Output: None 471144966Svkashyap * Return value: 0 -- success 472144966Svkashyap * non-zero-- failure 473144966Svkashyap */ 474144966SvkashyapTW_INT32 475144966Svkashyaptw_osli_request_bus_scan(struct twa_softc *sc) 476144966Svkashyap{ 477144966Svkashyap union ccb *ccb; 478144966Svkashyap 479144966Svkashyap tw_osli_dbg_dprintf(3, sc, "entering"); 480144966Svkashyap 481152213Svkashyap /* If we get here before sc->sim is initialized, return an error. */ 482152213Svkashyap if (!(sc->sim)) 483152213Svkashyap return(ENXIO); 484203108Smav if ((ccb = xpt_alloc_ccb()) == NULL) 485144966Svkashyap return(ENOMEM); 486172496Sscottl mtx_lock(sc->sim_lock); 487203108Smav if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, cam_sim_path(sc->sim), 488203108Smav CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 489203108Smav xpt_free_ccb(ccb); 490172496Sscottl mtx_unlock(sc->sim_lock); 491144966Svkashyap return(EIO); 492169400Sscottl } 493144966Svkashyap 494203108Smav xpt_rescan(ccb); 495172496Sscottl mtx_unlock(sc->sim_lock); 496144966Svkashyap return(0); 497144966Svkashyap} 498144966Svkashyap 499144966Svkashyap 500144966Svkashyap 501144966Svkashyap/* 502144966Svkashyap * Function name: tw_osli_disallow_new_requests 503144966Svkashyap * Description: Calls the appropriate CAM function, so as to freeze 504144966Svkashyap * the flow of new requests from CAM to this controller. 505144966Svkashyap * 506144966Svkashyap * Input: sc -- ptr to OSL internal ctlr context 507208969Sdelphij * req_handle -- ptr to request handle sent by OSL. 508144966Svkashyap * Output: None 509144966Svkashyap * Return value: None 510144966Svkashyap */ 511144966SvkashyapTW_VOID 512208969Sdelphijtw_osli_disallow_new_requests(struct twa_softc *sc, 513208969Sdelphij struct tw_cl_req_handle *req_handle) 514144966Svkashyap{ 515208969Sdelphij /* Only freeze/release the simq for IOs */ 516208969Sdelphij if (req_handle->is_io) { 517208969Sdelphij struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 518208969Sdelphij union ccb *ccb = (union ccb *)(req->orig_req); 519208969Sdelphij 520172496Sscottl xpt_freeze_simq(sc->sim, 1); 521208969Sdelphij ccb->ccb_h.status |= CAM_RELEASE_SIMQ; 522172496Sscottl } 523144966Svkashyap} 524144966Svkashyap 525144966Svkashyap 526144966Svkashyap 527144966Svkashyap/* 528212008Sdelphij * Function name: tw_osl_timeout 529212008Sdelphij * Description: Call to timeout(). 530152213Svkashyap * 531212008Sdelphij * Input: req_handle -- ptr to request handle sent by OSL. 532152213Svkashyap * Output: None 533152213Svkashyap * Return value: None 534152213Svkashyap */ 535152213SvkashyapTW_VOID 536212008Sdelphijtw_osl_timeout(struct tw_cl_req_handle *req_handle) 537152213Svkashyap{ 538212008Sdelphij struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 539212008Sdelphij union ccb *ccb = (union ccb *)(req->orig_req); 540212008Sdelphij struct ccb_hdr *ccb_h = &(ccb->ccb_h); 541212008Sdelphij 542212008Sdelphij req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000); 543152213Svkashyap} 544152213Svkashyap 545152213Svkashyap 546152213Svkashyap 547152213Svkashyap/* 548212008Sdelphij * Function name: tw_osl_untimeout 549212008Sdelphij * Description: Inverse of call to timeout(). 550212008Sdelphij * 551212008Sdelphij * Input: req_handle -- ptr to request handle sent by OSL. 552212008Sdelphij * Output: None 553212008Sdelphij * Return value: None 554212008Sdelphij */ 555212008SdelphijTW_VOID 556212008Sdelphijtw_osl_untimeout(struct tw_cl_req_handle *req_handle) 557212008Sdelphij{ 558212008Sdelphij struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 559212008Sdelphij 560212008Sdelphij req->deadline = 0; 561212008Sdelphij} 562212008Sdelphij 563212008Sdelphij 564212008Sdelphij 565212008Sdelphij/* 566144966Svkashyap * Function name: tw_osl_scan_bus 567144966Svkashyap * Description: CL calls this function to request for a bus scan. 568144966Svkashyap * 569144966Svkashyap * Input: ctlr_handle -- ptr to controller handle 570144966Svkashyap * Output: None 571144966Svkashyap * Return value: None 572144966Svkashyap */ 573144966SvkashyapTW_VOID 574144966Svkashyaptw_osl_scan_bus(struct tw_cl_ctlr_handle *ctlr_handle) 575144966Svkashyap{ 576144966Svkashyap struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt; 577144966Svkashyap TW_INT32 error; 578144966Svkashyap 579144966Svkashyap if ((error = tw_osli_request_bus_scan(sc))) 580144966Svkashyap tw_osli_printf(sc, "error = %d", 581144966Svkashyap TW_CL_SEVERITY_ERROR_STRING, 582144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 583144966Svkashyap 0x2109, 584144966Svkashyap "Bus scan request to CAM failed", 585144966Svkashyap error); 586144966Svkashyap} 587144966Svkashyap 588144966Svkashyap 589144966Svkashyap 590144966Svkashyap/* 591144966Svkashyap * Function name: tw_osl_complete_io 592144966Svkashyap * Description: Called to complete CAM scsi requests. 593144966Svkashyap * 594144966Svkashyap * Input: req_handle -- ptr to request handle 595144966Svkashyap * Output: None 596144966Svkashyap * Return value: None 597144966Svkashyap */ 598144966SvkashyapTW_VOID 599144966Svkashyaptw_osl_complete_io(struct tw_cl_req_handle *req_handle) 600144966Svkashyap{ 601144966Svkashyap struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 602144966Svkashyap struct tw_cl_req_packet *req_pkt = 603144966Svkashyap (struct tw_cl_req_packet *)(&req->req_pkt); 604144966Svkashyap struct tw_cl_scsi_req_packet *scsi_req; 605144966Svkashyap struct twa_softc *sc = req->ctlr; 606144966Svkashyap union ccb *ccb = (union ccb *)(req->orig_req); 607144966Svkashyap 608144966Svkashyap tw_osli_dbg_dprintf(10, sc, "entering"); 609144966Svkashyap 610144966Svkashyap if (req->state != TW_OSLI_REQ_STATE_BUSY) 611144966Svkashyap tw_osli_printf(sc, "request = %p, status = %d", 612144966Svkashyap TW_CL_SEVERITY_ERROR_STRING, 613144966Svkashyap TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 614144966Svkashyap 0x210A, 615144966Svkashyap "Unposted command completed!!", 616144966Svkashyap req, req->state); 617144966Svkashyap 618144966Svkashyap /* 619144966Svkashyap * Remove request from the busy queue. Just mark it complete. 620144966Svkashyap * There's no need to move it into the complete queue as we are 621144966Svkashyap * going to be done with it right now. 622144966Svkashyap */ 623144966Svkashyap req->state = TW_OSLI_REQ_STATE_COMPLETE; 624144966Svkashyap tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q); 625144966Svkashyap 626144966Svkashyap tw_osli_unmap_request(req); 627144966Svkashyap 628212008Sdelphij req->deadline = 0; 629144966Svkashyap if (req->error_code) { 630144966Svkashyap /* This request never got submitted to the firmware. */ 631144966Svkashyap if (req->error_code == EBUSY) { 632144966Svkashyap /* 633152213Svkashyap * Cmd queue is full, or the Common Layer is out of 634208969Sdelphij * resources. The simq will already have been frozen. 635208969Sdelphij * When this ccb gets completed will unfreeze the simq. 636144966Svkashyap */ 637144966Svkashyap ccb->ccb_h.status |= CAM_REQUEUE_REQ; 638144966Svkashyap } 639144966Svkashyap else if (req->error_code == EFBIG) 640144966Svkashyap ccb->ccb_h.status = CAM_REQ_TOO_BIG; 641144966Svkashyap else 642144966Svkashyap ccb->ccb_h.status = CAM_REQ_CMP_ERR; 643144966Svkashyap } else { 644144966Svkashyap scsi_req = &(req_pkt->gen_req_pkt.scsi_req); 645144966Svkashyap if (req_pkt->status == TW_CL_ERR_REQ_SUCCESS) 646144966Svkashyap ccb->ccb_h.status = CAM_REQ_CMP; 647144966Svkashyap else { 648144966Svkashyap if (req_pkt->status & TW_CL_ERR_REQ_INVALID_TARGET) 649237460Smav ccb->ccb_h.status |= CAM_SEL_TIMEOUT; 650144966Svkashyap else if (req_pkt->status & TW_CL_ERR_REQ_INVALID_LUN) 651237460Smav ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 652144966Svkashyap else if (req_pkt->status & TW_CL_ERR_REQ_SCSI_ERROR) 653144966Svkashyap ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR; 654144966Svkashyap else if (req_pkt->status & TW_CL_ERR_REQ_BUS_RESET) 655212008Sdelphij ccb->ccb_h.status |= (CAM_REQUEUE_REQ | CAM_SCSI_BUS_RESET); 656144966Svkashyap /* 657144966Svkashyap * If none of the above errors occurred, simply 658144966Svkashyap * mark completion error. 659144966Svkashyap */ 660144966Svkashyap if (ccb->ccb_h.status == 0) 661144966Svkashyap ccb->ccb_h.status = CAM_REQ_CMP_ERR; 662144966Svkashyap 663144966Svkashyap if (req_pkt->status & TW_CL_ERR_REQ_AUTO_SENSE_VALID) { 664144966Svkashyap ccb->csio.sense_len = scsi_req->sense_len; 665144966Svkashyap ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 666144966Svkashyap } 667144966Svkashyap } 668144966Svkashyap 669144966Svkashyap ccb->csio.scsi_status = scsi_req->scsi_status; 670144966Svkashyap } 671144966Svkashyap 672144966Svkashyap ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 673172496Sscottl mtx_lock(sc->sim_lock); 674144966Svkashyap xpt_done(ccb); 675172496Sscottl mtx_unlock(sc->sim_lock); 676144966Svkashyap if (! req->error_code) 677144966Svkashyap /* twa_action will free the request otherwise */ 678144966Svkashyap tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 679144966Svkashyap} 680144966Svkashyap 681