diff options
Diffstat (limited to 'sys/dev/mrsas/mrsas_cam.c')
| -rw-r--r-- | sys/dev/mrsas/mrsas_cam.c | 1179 |
1 files changed, 1179 insertions, 0 deletions
diff --git a/sys/dev/mrsas/mrsas_cam.c b/sys/dev/mrsas/mrsas_cam.c new file mode 100644 index 0000000..81e8fcb --- /dev/null +++ b/sys/dev/mrsas/mrsas_cam.c @@ -0,0 +1,1179 @@ +/* + * Copyright (c) 2014, LSI Corp. + * All rights reserved. + * Author: Marian Choy + * Support: freebsdraid@lsi.com + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name of the <ORGANIZATION> nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * +*/ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "dev/mrsas/mrsas.h" + +#include <cam/cam.h> +#include <cam/cam_ccb.h> +#include <cam/cam_sim.h> +#include <cam/cam_xpt_sim.h> +#include <cam/cam_debug.h> +#include <cam/cam_periph.h> +#include <cam/cam_xpt_periph.h> + +#include <cam/scsi/scsi_all.h> +#include <cam/scsi/scsi_message.h> +#include <sys/taskqueue.h> + + +/* + * Function prototypes + */ +int mrsas_cam_attach(struct mrsas_softc *sc); +//int mrsas_ldio_inq(union ccb *ccb); +int mrsas_ldio_inq(struct cam_sim *sim, union ccb *ccb); +int mrsas_bus_scan(struct mrsas_softc *sc); +int mrsas_bus_scan_sim(struct mrsas_softc *sc, struct cam_sim *sim); +int mrsas_map_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd); +int mrsas_build_ldio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd, + union ccb *ccb); +int mrsas_build_dcdb(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd, + union ccb *ccb, struct cam_sim *sim); +int mrsas_setup_io(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd, + union ccb *ccb, u_int32_t device_id, + MRSAS_RAID_SCSI_IO_REQUEST *io_request); +void mrsas_xpt_freeze(struct mrsas_softc *sc); +void mrsas_xpt_release(struct mrsas_softc *sc); +void mrsas_cam_detach(struct mrsas_softc *sc); +void mrsas_release_mpt_cmd(struct mrsas_mpt_cmd *cmd); +void mrsas_unmap_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd); +void mrsas_cmd_done(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd); +void mrsas_fire_cmd(struct mrsas_softc *sc, u_int32_t req_desc_lo, + u_int32_t req_desc_hi); +void mrsas_set_pd_lba(MRSAS_RAID_SCSI_IO_REQUEST *io_request, u_int8_t cdb_len, + struct IO_REQUEST_INFO *io_info, union ccb *ccb, + MR_FW_RAID_MAP_ALL *local_map_ptr, u_int32_t ref_tag, + u_int32_t ld_block_size); +static void mrsas_freeze_simq(struct mrsas_mpt_cmd *cmd, struct cam_sim *sim); +static void mrsas_poll(struct cam_sim *sim); +static void mrsas_action(struct cam_sim *sim, union ccb *ccb); +static void mrsas_scsiio_timeout(void *data); +static void mrsas_data_load_cb(void *arg, bus_dma_segment_t *segs, + int nseg, int error); +static int32_t mrsas_startio(struct mrsas_softc *sc, struct cam_sim *sim, + union ccb *ccb); +struct mrsas_mpt_cmd * mrsas_get_mpt_cmd(struct mrsas_softc *sc); +MRSAS_REQUEST_DESCRIPTOR_UNION *mrsas_get_request_desc(struct mrsas_softc *sc, + u_int16_t index); + +extern u_int16_t MR_TargetIdToLdGet(u_int32_t ldTgtId, MR_FW_RAID_MAP_ALL *map); +extern u_int32_t MR_LdBlockSizeGet(u_int32_t ldTgtId, MR_FW_RAID_MAP_ALL *map, + struct mrsas_softc *sc); +extern void mrsas_isr(void *arg); +extern void mrsas_aen_handler(struct mrsas_softc *sc); +extern u_int8_t MR_BuildRaidContext(struct mrsas_softc *sc, + struct IO_REQUEST_INFO *io_info,RAID_CONTEXT *pRAID_Context, + MR_FW_RAID_MAP_ALL *map); +extern u_int16_t MR_LdSpanArrayGet(u_int32_t ld, u_int32_t span, + MR_FW_RAID_MAP_ALL *map); +extern u_int16_t mrsas_get_updated_dev_handle(PLD_LOAD_BALANCE_INFO lbInfo, + struct IO_REQUEST_INFO *io_info); +extern u_int8_t megasas_get_best_arm(PLD_LOAD_BALANCE_INFO lbInfo, u_int8_t arm, + u_int64_t block, u_int32_t count); + + +/** + * mrsas_cam_attach: Main entry to CAM subsystem + * input: Adapter instance soft state + * + * This function is called from mrsas_attach() during initialization + * to perform SIM allocations and XPT bus registration. If the kernel + * version is 7.4 or earlier, it would also initiate a bus scan. + */ +int mrsas_cam_attach(struct mrsas_softc *sc) +{ + struct cam_devq *devq; + int mrsas_cam_depth; + + mrsas_cam_depth = sc->max_fw_cmds - MRSAS_INTERNAL_CMDS; + + if ((devq = cam_simq_alloc(mrsas_cam_depth)) == NULL) { + device_printf(sc->mrsas_dev, "Cannot allocate SIM queue\n"); + return(ENOMEM); + } + + + /* + * Create SIM for bus 0 and register, also create path + */ + sc->sim_0 = cam_sim_alloc(mrsas_action, mrsas_poll, "mrsas", sc, + device_get_unit(sc->mrsas_dev), &sc->sim_lock, mrsas_cam_depth, + mrsas_cam_depth, devq); + if (sc->sim_0 == NULL){ + cam_simq_free(devq); + device_printf(sc->mrsas_dev, "Cannot register SIM\n"); + return(ENXIO); + } + /* Initialize taskqueue for Event Handling */ + TASK_INIT(&sc->ev_task, 0, (void *)mrsas_aen_handler, sc); + sc->ev_tq = taskqueue_create("mrsas_taskq", M_NOWAIT | M_ZERO, + taskqueue_thread_enqueue, &sc->ev_tq); + + /* Run the task queue with lowest priority */ + taskqueue_start_threads(&sc->ev_tq, 1, 255, "%s taskq", + device_get_nameunit(sc->mrsas_dev)); + mtx_lock(&sc->sim_lock); + if (xpt_bus_register(sc->sim_0, sc->mrsas_dev,0) != CAM_SUCCESS) + { + cam_sim_free(sc->sim_0, TRUE); // passing true frees the devq + mtx_unlock(&sc->sim_lock); + return(ENXIO); + } + if (xpt_create_path(&sc->path_0, NULL, cam_sim_path(sc->sim_0), + CAM_TARGET_WILDCARD, + CAM_LUN_WILDCARD) != CAM_REQ_CMP) { + xpt_bus_deregister(cam_sim_path(sc->sim_0)); + cam_sim_free(sc->sim_0, TRUE); // passing true will free the devq + mtx_unlock(&sc->sim_lock); + return(ENXIO); + } + mtx_unlock(&sc->sim_lock); + + /* + * Create SIM for bus 1 and register, also create path + */ + sc->sim_1 = cam_sim_alloc(mrsas_action, mrsas_poll, "mrsas", sc, + device_get_unit(sc->mrsas_dev), &sc->sim_lock, mrsas_cam_depth, + mrsas_cam_depth, devq); + if (sc->sim_1 == NULL){ + cam_simq_free(devq); + device_printf(sc->mrsas_dev, "Cannot register SIM\n"); + return(ENXIO); + } + + mtx_lock(&sc->sim_lock); + if (xpt_bus_register(sc->sim_1, sc->mrsas_dev, 1) != CAM_SUCCESS){ + cam_sim_free(sc->sim_1, TRUE); // passing true frees the devq + mtx_unlock(&sc->sim_lock); + return(ENXIO); + } + if (xpt_create_path(&sc->path_1, NULL, cam_sim_path(sc->sim_1), + CAM_TARGET_WILDCARD, + CAM_LUN_WILDCARD) != CAM_REQ_CMP) { + xpt_bus_deregister(cam_sim_path(sc->sim_1)); + cam_sim_free(sc->sim_1, TRUE); + mtx_unlock(&sc->sim_lock); + return(ENXIO); + } + mtx_unlock(&sc->sim_lock); + +#if (__FreeBSD_version <= 704000) + if (mrsas_bus_scan(sc)){ + device_printf(sc->mrsas_dev, "Error in bus scan.\n"); + return(1); + } +#endif + return(0); +} + +/** + * mrsas_cam_detach: De-allocates and teardown CAM + * input: Adapter instance soft state + * + * De-registers and frees the paths and SIMs. + */ +void mrsas_cam_detach(struct mrsas_softc *sc) +{ + if (sc->ev_tq != NULL) + taskqueue_free(sc->ev_tq); + mtx_lock(&sc->sim_lock); + if (sc->path_0) + xpt_free_path(sc->path_0); + if (sc->sim_0) { + xpt_bus_deregister(cam_sim_path(sc->sim_0)); + cam_sim_free(sc->sim_0, FALSE); + } + if (sc->path_1) + xpt_free_path(sc->path_1); + if (sc->sim_1) { + xpt_bus_deregister(cam_sim_path(sc->sim_1)); + cam_sim_free(sc->sim_1, TRUE); + } + mtx_unlock(&sc->sim_lock); +} + +/** + * mrsas_action: SIM callback entry point + * input: pointer to SIM + * pointer to CAM Control Block + * + * This function processes CAM subsystem requests. The type of request is + * stored in ccb->ccb_h.func_code. The preprocessor #ifdef is necessary + * because ccb->cpi.maxio is not supported for FreeBSD version 7.4 or + * earlier. + */ +static void mrsas_action(struct cam_sim *sim, union ccb *ccb) +{ + struct mrsas_softc *sc = (struct mrsas_softc *)cam_sim_softc(sim); + struct ccb_hdr *ccb_h = &(ccb->ccb_h); + u_int32_t device_id; + + switch (ccb->ccb_h.func_code) { + case XPT_SCSI_IO: + { + device_id = ccb_h->target_id; + + /* + * bus 0 is LD, bus 1 is for system-PD + */ + if (cam_sim_bus(sim) == 1 && + sc->pd_list[device_id].driveState != MR_PD_STATE_SYSTEM) { + ccb->ccb_h.status |= CAM_DEV_NOT_THERE; + xpt_done(ccb); + } + else { + if (mrsas_startio(sc, sim, ccb)){ + ccb->ccb_h.status |= CAM_REQ_INVALID; + xpt_done(ccb); + } + } + break; + } + case XPT_ABORT: + { + ccb->ccb_h.status = CAM_UA_ABORT; + xpt_done(ccb); + break; + } + case XPT_RESET_BUS: + { + xpt_done(ccb); + break; + } + case XPT_GET_TRAN_SETTINGS: + { + ccb->cts.protocol = PROTO_SCSI; + ccb->cts.protocol_version = SCSI_REV_2; + ccb->cts.transport = XPORT_SPI; + ccb->cts.transport_version = 2; + ccb->cts.xport_specific.spi.valid = CTS_SPI_VALID_DISC; + ccb->cts.xport_specific.spi.flags = CTS_SPI_FLAGS_DISC_ENB; + ccb->cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ; + ccb->cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB; + ccb->ccb_h.status = CAM_REQ_CMP; + xpt_done(ccb); + break; + } + case XPT_SET_TRAN_SETTINGS: + { + ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; + xpt_done(ccb); + break; + } + case XPT_CALC_GEOMETRY: + { + cam_calc_geometry(&ccb->ccg, 1); + xpt_done(ccb); + break; + } + case XPT_PATH_INQ: + { + ccb->cpi.version_num = 1; + ccb->cpi.hba_inquiry = 0; + ccb->cpi.target_sprt = 0; + ccb->cpi.hba_misc = 0; + ccb->cpi.hba_eng_cnt = 0; + ccb->cpi.max_lun = MRSAS_SCSI_MAX_LUNS; + ccb->cpi.unit_number = cam_sim_unit(sim); + ccb->cpi.bus_id = cam_sim_bus(sim); + ccb->cpi.initiator_id = MRSAS_SCSI_INITIATOR_ID; + ccb->cpi.base_transfer_speed = 150000; + strncpy(ccb->cpi.sim_vid, "FreeBSD", SIM_IDLEN); + strncpy(ccb->cpi.hba_vid, "LSI", HBA_IDLEN); + strncpy(ccb->cpi.dev_name, cam_sim_name(sim), DEV_IDLEN); + ccb->cpi.transport = XPORT_SPI; + ccb->cpi.transport_version = 2; + ccb->cpi.protocol = PROTO_SCSI; + ccb->cpi.protocol_version = SCSI_REV_2; + if (ccb->cpi.bus_id == 0) + ccb->cpi.max_target = MRSAS_MAX_LD-1; + else + ccb->cpi.max_target = MRSAS_MAX_PD-1; +#if (__FreeBSD_version > 704000) + ccb->cpi.maxio = MRSAS_MAX_IO_SIZE; +#endif + ccb->ccb_h.status = CAM_REQ_CMP; + xpt_done(ccb); + break; + } + default: + { + ccb->ccb_h.status = CAM_REQ_INVALID; + xpt_done(ccb); + break; + } + } +} + +/** + * mrsas_scsiio_timeout Callback function for IO timed out + * input: mpt command context + * + * This function will execute after timeout value + * provided by ccb header from CAM layer, if timer expires. + * Driver will run timer for all DCDM and LDIO comming from CAM layer. + * This function is callback function for IO timeout and it runs in + * no-sleep context. Set do_timedout_reset in Adapter context so that + * it will execute OCR/Kill adpter from ocr_thread context. + */ +static void +mrsas_scsiio_timeout(void *data) +{ + struct mrsas_mpt_cmd *cmd; + struct mrsas_softc *sc; + + cmd = (struct mrsas_mpt_cmd *)data; + sc = cmd->sc; + + if (cmd->ccb_ptr == NULL) { + printf("command timeout with NULL ccb\n"); + return; + } + + /* Below callout is dummy entry so that it will be + * cancelled from mrsas_cmd_done(). Now Controller will + * go to OCR/Kill Adapter based on OCR enable/disable + * property of Controller from ocr_thread context. + */ + callout_reset(&cmd->cm_callout, (600000 * hz) / 1000, + mrsas_scsiio_timeout, cmd); + sc->do_timedout_reset = 1; + if(sc->ocr_thread_active) + wakeup(&sc->ocr_chan); +} + +/** + * mrsas_startio: SCSI IO entry point + * input: Adapter instance soft state + * pointer to CAM Control Block + * + * This function is the SCSI IO entry point and it initiates IO processing. + * It copies the IO and depending if the IO is read/write or inquiry, it would + * call mrsas_build_ldio() or mrsas_build_dcdb(), respectively. It returns + * 0 if the command is sent to firmware successfully, otherwise it returns 1. + */ +static int32_t mrsas_startio(struct mrsas_softc *sc, struct cam_sim *sim, + union ccb *ccb) +{ + struct mrsas_mpt_cmd *cmd; + struct ccb_hdr *ccb_h = &(ccb->ccb_h); + struct ccb_scsiio *csio = &(ccb->csio); + MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc; + + if ((csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE){ + ccb->ccb_h.status = CAM_REQ_CMP; + xpt_done(ccb); + return(0); + } + + ccb_h->status |= CAM_SIM_QUEUED; + cmd = mrsas_get_mpt_cmd(sc); + + if (!cmd) { + ccb_h->status |= CAM_REQUEUE_REQ; + xpt_done(ccb); + return(0); + } + + if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { + if(ccb_h->flags & CAM_DIR_IN) + cmd->flags |= MRSAS_DIR_IN; + if(ccb_h->flags & CAM_DIR_OUT) + cmd->flags |= MRSAS_DIR_OUT; + } + else + cmd->flags = MRSAS_DIR_NONE; /* no data */ + +/* For FreeBSD 10.0 and higher */ +#if (__FreeBSD_version >= 1000000) +/* + * * XXX We don't yet support physical addresses here. + */ + switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { + case CAM_DATA_PADDR: + case CAM_DATA_SG_PADDR: + printf("%s: physical addresses not supported\n", + __func__); + mrsas_release_mpt_cmd(cmd); + ccb_h->status = CAM_REQ_INVALID; + ccb_h->status &= ~CAM_SIM_QUEUED; + goto done; + case CAM_DATA_SG: + printf("%s: scatter gather is not supported\n", + __func__); + mrsas_release_mpt_cmd(cmd); + ccb_h->status = CAM_REQ_INVALID; + goto done; + case CAM_DATA_VADDR: + if (csio->dxfer_len > MRSAS_MAX_IO_SIZE) { + mrsas_release_mpt_cmd(cmd); + ccb_h->status = CAM_REQ_TOO_BIG; + goto done; + } + cmd->length = csio->dxfer_len; + if (cmd->length) + cmd->data = csio->data_ptr; + break; + default: + ccb->ccb_h.status = CAM_REQ_INVALID; + goto done; + } +#else + if (!(ccb_h->flags & CAM_DATA_PHYS)) { //Virtual data address + if (!(ccb_h->flags & CAM_SCATTER_VALID)) { + if (csio->dxfer_len > MRSAS_MAX_IO_SIZE) { + mrsas_release_mpt_cmd(cmd); + ccb_h->status = CAM_REQ_TOO_BIG; + goto done; + } + cmd->length = csio->dxfer_len; + if (cmd->length) + cmd->data = csio->data_ptr; + } + else { + mrsas_release_mpt_cmd(cmd); + ccb_h->status = CAM_REQ_INVALID; + goto done; + } + } + else { //Data addresses are physical. + mrsas_release_mpt_cmd(cmd); + ccb_h->status = CAM_REQ_INVALID; + ccb_h->status &= ~CAM_SIM_QUEUED; + goto done; + } +#endif + /* save ccb ptr */ + cmd->ccb_ptr = ccb; + + req_desc = mrsas_get_request_desc(sc, (cmd->index)-1); + if (!req_desc) { + device_printf(sc->mrsas_dev, "Cannot get request_descriptor.\n"); + return (FAIL); + } + memset(req_desc, 0, sizeof(MRSAS_REQUEST_DESCRIPTOR_UNION)); + cmd->request_desc = req_desc; + + if (ccb_h->flags & CAM_CDB_POINTER) + bcopy(csio->cdb_io.cdb_ptr, cmd->io_request->CDB.CDB32, csio->cdb_len); + else + bcopy(csio->cdb_io.cdb_bytes, cmd->io_request->CDB.CDB32, csio->cdb_len); + mtx_lock(&sc->raidmap_lock); + + if (mrsas_ldio_inq(sim, ccb)) { + if (mrsas_build_ldio(sc, cmd, ccb)){ + device_printf(sc->mrsas_dev, "Build LDIO failed.\n"); + mtx_unlock(&sc->raidmap_lock); + return(1); + } + } + else { + if (mrsas_build_dcdb(sc, cmd, ccb, sim)) { + device_printf(sc->mrsas_dev, "Build DCDB failed.\n"); + mtx_unlock(&sc->raidmap_lock); + return(1); + } + } + mtx_unlock(&sc->raidmap_lock); + + if (cmd->flags == MRSAS_DIR_IN) //from device + cmd->io_request->Control |= MPI2_SCSIIO_CONTROL_READ; + else if (cmd->flags == MRSAS_DIR_OUT) //to device + cmd->io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE; + + cmd->io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING; + cmd->io_request->SGLOffset0 = offsetof(MRSAS_RAID_SCSI_IO_REQUEST, SGL)/4; + cmd->io_request->SenseBufferLowAddress = cmd->sense_phys_addr; + cmd->io_request->SenseBufferLength = MRSAS_SCSI_SENSE_BUFFERSIZE; + + req_desc = cmd->request_desc; + req_desc->SCSIIO.SMID = cmd->index; + + /* + * Start timer for IO timeout. Default timeout value is 90 second. + */ + callout_reset(&cmd->cm_callout, (sc->mrsas_io_timeout * hz) / 1000, + mrsas_scsiio_timeout, cmd); + atomic_inc(&sc->fw_outstanding); + + if(atomic_read(&sc->fw_outstanding) > sc->io_cmds_highwater) + sc->io_cmds_highwater++; + + mrsas_fire_cmd(sc, req_desc->addr.u.low, req_desc->addr.u.high); + return(0); + +done: + xpt_done(ccb); + return(0); +} + +/** + * mrsas_ldio_inq: Determines if IO is read/write or inquiry + * input: pointer to CAM Control Block + * + * This function determines if the IO is read/write or inquiry. It returns a + * 1 if the IO is read/write and 0 if it is inquiry. + */ +int mrsas_ldio_inq(struct cam_sim *sim, union ccb *ccb) +{ + struct ccb_scsiio *csio = &(ccb->csio); + + if (cam_sim_bus(sim) == 1) + return(0); + + switch (csio->cdb_io.cdb_bytes[0]) { + case READ_10: + case WRITE_10: + case READ_12: + case WRITE_12: + case READ_6: + case WRITE_6: + case READ_16: + case WRITE_16: + return 1; + default: + return 0; + } +} + +/** + * mrsas_get_mpt_cmd: Get a cmd from free command pool + * input: Adapter instance soft state + * + * This function removes an MPT command from the command free list and + * initializes it. + */ +struct mrsas_mpt_cmd* mrsas_get_mpt_cmd(struct mrsas_softc *sc) +{ + struct mrsas_mpt_cmd *cmd = NULL; + + mtx_lock(&sc->mpt_cmd_pool_lock); + if (!TAILQ_EMPTY(&sc->mrsas_mpt_cmd_list_head)){ + cmd = TAILQ_FIRST(&sc->mrsas_mpt_cmd_list_head); + TAILQ_REMOVE(&sc->mrsas_mpt_cmd_list_head, cmd, next); + } + memset((uint8_t *)cmd->io_request, 0, MRSAS_MPI2_RAID_DEFAULT_IO_FRAME_SIZE); + cmd->data = NULL; + cmd->length = 0; + cmd->flags = 0; + cmd->error_code = 0; + cmd->load_balance = 0; + cmd->ccb_ptr = NULL; + mtx_unlock(&sc->mpt_cmd_pool_lock); + + return cmd; +} + +/** + * mrsas_release_mpt_cmd: Return a cmd to free command pool + * input: Command packet for return to free command pool + * + * This function returns an MPT command to the free command list. + */ +void mrsas_release_mpt_cmd(struct mrsas_mpt_cmd *cmd) +{ + struct mrsas_softc *sc = cmd->sc; + + mtx_lock(&sc->mpt_cmd_pool_lock); + cmd->sync_cmd_idx = (u_int32_t)MRSAS_ULONG_MAX; + TAILQ_INSERT_TAIL(&(sc->mrsas_mpt_cmd_list_head), cmd, next); + mtx_unlock(&sc->mpt_cmd_pool_lock); + + return; +} + +/** + * mrsas_get_request_desc: Get request descriptor from array + * input: Adapter instance soft state + * SMID index + * + * This function returns a pointer to the request descriptor. + */ +MRSAS_REQUEST_DESCRIPTOR_UNION * +mrsas_get_request_desc(struct mrsas_softc *sc, u_int16_t index) +{ + u_int8_t *p; + + if (index >= sc->max_fw_cmds) { + device_printf(sc->mrsas_dev, "Invalid SMID (0x%x)request for desc\n", index); + return NULL; + } + p = sc->req_desc + sizeof(MRSAS_REQUEST_DESCRIPTOR_UNION) * index; + + return (MRSAS_REQUEST_DESCRIPTOR_UNION *)p; +} + +/** + * mrsas_build_ldio: Builds an LDIO command + * input: Adapter instance soft state + * Pointer to command packet + * Pointer to CCB + * + * This function builds the LDIO command packet. It returns 0 if the + * command is built successfully, otherwise it returns a 1. + */ +int mrsas_build_ldio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd, + union ccb *ccb) +{ + struct ccb_hdr *ccb_h = &(ccb->ccb_h); + struct ccb_scsiio *csio = &(ccb->csio); + u_int32_t device_id; + MRSAS_RAID_SCSI_IO_REQUEST *io_request; + + device_id = ccb_h->target_id; + + io_request = cmd->io_request; + io_request->RaidContext.VirtualDiskTgtId = device_id; + io_request->RaidContext.status = 0; + io_request->RaidContext.exStatus = 0; + + /* just the cdb len, other flags zero, and ORed-in later for FP */ + io_request->IoFlags = csio->cdb_len; + + if (mrsas_setup_io(sc, cmd, ccb, device_id, io_request) != SUCCESS) + device_printf(sc->mrsas_dev, "Build ldio or fpio error\n"); + + io_request->DataLength = cmd->length; + + if (mrsas_map_request(sc, cmd) == SUCCESS) { + if (cmd->sge_count > MRSAS_MAX_SGL) { + device_printf(sc->mrsas_dev, "Error: sge_count (0x%x) exceeds" + "max (0x%x) allowed\n", cmd->sge_count, sc->max_num_sge); + return (FAIL); + } + io_request->RaidContext.numSGE = cmd->sge_count; + } + else { + device_printf(sc->mrsas_dev, "Data map/load failed.\n"); + return(FAIL); + } + return(0); +} + +/** + * mrsas_setup_io: Set up data including Fast Path I/O + * input: Adapter instance soft state + * Pointer to command packet + * Pointer to CCB + * + * This function builds the DCDB inquiry command. It returns 0 if the + * command is built successfully, otherwise it returns a 1. + */ +int mrsas_setup_io(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd, + union ccb *ccb, u_int32_t device_id, + MRSAS_RAID_SCSI_IO_REQUEST *io_request) +{ + struct ccb_hdr *ccb_h = &(ccb->ccb_h); + struct ccb_scsiio *csio = &(ccb->csio); + struct IO_REQUEST_INFO io_info; + MR_FW_RAID_MAP_ALL *map_ptr; + u_int8_t fp_possible; + u_int32_t start_lba_hi, start_lba_lo, ld_block_size; + u_int32_t datalength = 0; + + start_lba_lo = 0; + start_lba_hi = 0; + fp_possible = 0; + + /* + * READ_6 (0x08) or WRITE_6 (0x0A) cdb + */ + if (csio->cdb_len == 6) { + datalength = (u_int32_t)csio->cdb_io.cdb_bytes[4]; + start_lba_lo = ((u_int32_t) csio->cdb_io.cdb_bytes[1] << 16) | + ((u_int32_t) csio->cdb_io.cdb_bytes[2] << 8) | + (u_int32_t) csio->cdb_io.cdb_bytes[3]; + start_lba_lo &= 0x1FFFFF; + } + /* + * READ_10 (0x28) or WRITE_6 (0x2A) cdb + */ + else if (csio->cdb_len == 10) { + datalength = (u_int32_t)csio->cdb_io.cdb_bytes[8] | + ((u_int32_t)csio->cdb_io.cdb_bytes[7] << 8); + start_lba_lo = ((u_int32_t) csio->cdb_io.cdb_bytes[2] << 24) | + ((u_int32_t) csio->cdb_io.cdb_bytes[3] << 16) | + (u_int32_t) csio->cdb_io.cdb_bytes[4] << 8 | + ((u_int32_t) csio->cdb_io.cdb_bytes[5]); + } + /* + * READ_12 (0xA8) or WRITE_12 (0xAA) cdb + */ + else if (csio->cdb_len == 12) { + datalength = (u_int32_t)csio->cdb_io.cdb_bytes[6] << 24 | + ((u_int32_t)csio->cdb_io.cdb_bytes[7] << 16) | + ((u_int32_t)csio->cdb_io.cdb_bytes[8] << 8) | + ((u_int32_t)csio->cdb_io.cdb_bytes[9]); + start_lba_lo = ((u_int32_t) csio->cdb_io.cdb_bytes[2] << 24) | + ((u_int32_t) csio->cdb_io.cdb_bytes[3] << 16) | + (u_int32_t) csio->cdb_io.cdb_bytes[4] << 8 | + ((u_int32_t) csio->cdb_io.cdb_bytes[5]); + } + /* + * READ_16 (0x88) or WRITE_16 (0xx8A) cdb + */ + else if (csio->cdb_len == 16) { + datalength = (u_int32_t)csio->cdb_io.cdb_bytes[10] << 24 | + ((u_int32_t)csio->cdb_io.cdb_bytes[11] << 16) | + ((u_int32_t)csio->cdb_io.cdb_bytes[12] << 8) | + ((u_int32_t)csio->cdb_io.cdb_bytes[13]); + start_lba_lo = ((u_int32_t) csio->cdb_io.cdb_bytes[6] << 24) | + ((u_int32_t) csio->cdb_io.cdb_bytes[7] << 16) | + (u_int32_t) csio->cdb_io.cdb_bytes[8] << 8 | + ((u_int32_t) csio->cdb_io.cdb_bytes[9]); + start_lba_hi = ((u_int32_t) csio->cdb_io.cdb_bytes[2] << 24) | + ((u_int32_t) csio->cdb_io.cdb_bytes[3] << 16) | + (u_int32_t) csio->cdb_io.cdb_bytes[4] << 8 | + ((u_int32_t) csio->cdb_io.cdb_bytes[5]); + } + + memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); + io_info.ldStartBlock = ((u_int64_t)start_lba_hi << 32) | start_lba_lo; + io_info.numBlocks = datalength; + io_info.ldTgtId = device_id; + + switch (ccb_h->flags & CAM_DIR_MASK) { + case CAM_DIR_IN: + io_info.isRead = 1; + break; + case CAM_DIR_OUT: + io_info.isRead = 0; + break; + case CAM_DIR_NONE: + default: + mrsas_dprint(sc, MRSAS_TRACE, "From %s : DMA Flag is %d \n", __func__, ccb_h->flags & CAM_DIR_MASK); + break; + } + + map_ptr = sc->raidmap_mem[(sc->map_id & 1)]; + ld_block_size = MR_LdBlockSizeGet(device_id, map_ptr, sc); + + if ((MR_TargetIdToLdGet(device_id, map_ptr) >= MAX_LOGICAL_DRIVES) || + (!sc->fast_path_io)) { + io_request->RaidContext.regLockFlags = 0; + fp_possible = 0; + } + else + { + if (MR_BuildRaidContext(sc, &io_info, &io_request->RaidContext, map_ptr)) + fp_possible = io_info.fpOkForIo; + } + + if (fp_possible) { + mrsas_set_pd_lba(io_request, csio->cdb_len, &io_info, ccb, map_ptr, + start_lba_lo, ld_block_size); + io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; + cmd->request_desc->SCSIIO.RequestFlags = + (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY + << MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) { + if (io_request->RaidContext.regLockFlags == REGION_TYPE_UNUSED) + cmd->request_desc->SCSIIO.RequestFlags = (MRSAS_REQ_DESCRIPT_FLAGS_NO_LOCK << MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + io_request->RaidContext.Type = MPI2_TYPE_CUDA; + io_request->RaidContext.nseg = 0x1; + io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH; + io_request->RaidContext.regLockFlags |= (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | MR_RL_FLAGS_SEQ_NUM_ENABLE); + } + if ((sc->load_balance_info[device_id].loadBalanceFlag) && (io_info.isRead)) { + io_info.devHandle = mrsas_get_updated_dev_handle(&sc->load_balance_info[device_id], + &io_info); + cmd->load_balance = MRSAS_LOAD_BALANCE_FLAG; + } + else + cmd->load_balance = 0; + cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; + io_request->DevHandle = io_info.devHandle; + } + else { + /* Not FP IO */ + io_request->RaidContext.timeoutValue = map_ptr->raidMap.fpPdIoTimeoutSec; + cmd->request_desc->SCSIIO.RequestFlags = + (MRSAS_REQ_DESCRIPT_FLAGS_LD_IO << MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) { + if (io_request->RaidContext.regLockFlags == REGION_TYPE_UNUSED) + cmd->request_desc->SCSIIO.RequestFlags = (MRSAS_REQ_DESCRIPT_FLAGS_NO_LOCK << MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + io_request->RaidContext.Type = MPI2_TYPE_CUDA; + io_request->RaidContext.regLockFlags |= (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | MR_RL_FLAGS_SEQ_NUM_ENABLE); + io_request->RaidContext.nseg = 0x1; + } + io_request->Function = MRSAS_MPI2_FUNCTION_LD_IO_REQUEST; + io_request->DevHandle = device_id; + } + return(0); +} + +/** + * mrsas_build_dcdb: Builds an DCDB command + * input: Adapter instance soft state + * Pointer to command packet + * Pointer to CCB + * + * This function builds the DCDB inquiry command. It returns 0 if the + * command is built successfully, otherwise it returns a 1. + */ +int mrsas_build_dcdb(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd, + union ccb *ccb, struct cam_sim *sim) +{ + struct ccb_hdr *ccb_h = &(ccb->ccb_h); + u_int32_t device_id; + MR_FW_RAID_MAP_ALL *map_ptr; + MRSAS_RAID_SCSI_IO_REQUEST *io_request; + + io_request = cmd->io_request; + device_id = ccb_h->target_id; + map_ptr = sc->raidmap_mem[(sc->map_id & 1)]; + + /* Check if this is for system PD */ + if (cam_sim_bus(sim) == 1 && + sc->pd_list[device_id].driveState == MR_PD_STATE_SYSTEM) { + io_request->Function = 0; + io_request->DevHandle = map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; + io_request->RaidContext.timeoutValue = map_ptr->raidMap.fpPdIoTimeoutSec; + io_request->RaidContext.regLockFlags = 0; + io_request->RaidContext.regLockRowLBA = 0; + io_request->RaidContext.regLockLength = 0; + io_request->RaidContext.RAIDFlags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD << + MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; + if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) + io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH; + cmd->request_desc->SCSIIO.RequestFlags = + (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << + MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + cmd->request_desc->SCSIIO.DevHandle = + map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; + } + else { + io_request->Function = MRSAS_MPI2_FUNCTION_LD_IO_REQUEST; + io_request->DevHandle = device_id; + cmd->request_desc->SCSIIO.RequestFlags = + (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); + } + + io_request->RaidContext.VirtualDiskTgtId = device_id; + io_request->LUN[1] = ccb_h->target_lun & 0xF; + io_request->DataLength = cmd->length; + + if (mrsas_map_request(sc, cmd) == SUCCESS) { + if (cmd->sge_count > sc->max_num_sge) { + device_printf(sc->mrsas_dev, "Error: sge_count (0x%x) exceeds" + "max (0x%x) allowed\n", cmd->sge_count, sc->max_num_sge); + return (1); + } + io_request->RaidContext.numSGE = cmd->sge_count; + } + else { + device_printf(sc->mrsas_dev, "Data map/load failed.\n"); + return(1); + } + return(0); +} + +/** + * mrsas_map_request: Map and load data + * input: Adapter instance soft state + * Pointer to command packet + * + * For data from OS, map and load the data buffer into bus space. The + * SG list is built in the callback. If the bus dmamap load is not + * successful, cmd->error_code will contain the error code and a 1 is + * returned. + */ +int mrsas_map_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd) +{ + u_int32_t retcode = 0; + struct cam_sim *sim; + int flag = BUS_DMA_NOWAIT; + + sim = xpt_path_sim(cmd->ccb_ptr->ccb_h.path); + + if (cmd->data != NULL) { + mtx_lock(&sc->io_lock); + /* Map data buffer into bus space */ + retcode = bus_dmamap_load(sc->data_tag, cmd->data_dmamap, cmd->data, + cmd->length, mrsas_data_load_cb, cmd, flag); + mtx_unlock(&sc->io_lock); + if (retcode) + device_printf(sc->mrsas_dev, "bus_dmamap_load(): retcode = %d\n", retcode); + if (retcode == EINPROGRESS) { + device_printf(sc->mrsas_dev, "request load in progress\n"); + mrsas_freeze_simq(cmd, sim); + } + } + if (cmd->error_code) + return(1); + return(retcode); +} + +/** + * mrsas_unmap_request: Unmap and unload data + * input: Adapter instance soft state + * Pointer to command packet + * + * This function unmaps and unloads data from OS. + */ +void mrsas_unmap_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd) +{ + if (cmd->data != NULL) { + if (cmd->flags & MRSAS_DIR_IN) + bus_dmamap_sync(sc->data_tag, cmd->data_dmamap, BUS_DMASYNC_POSTREAD); + if (cmd->flags & MRSAS_DIR_OUT) + bus_dmamap_sync(sc->data_tag, cmd->data_dmamap, BUS_DMASYNC_POSTWRITE); + mtx_lock(&sc->io_lock); + bus_dmamap_unload(sc->data_tag, cmd->data_dmamap); + mtx_unlock(&sc->io_lock); + } +} + +/** + * mrsas_data_load_cb: Callback entry point + * input: Pointer to command packet as argument + * Pointer to segment + * Number of segments + * Error + * + * This is the callback function of the bus dma map load. It builds + * the SG list. + */ +static void +mrsas_data_load_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) +{ + struct mrsas_mpt_cmd *cmd = (struct mrsas_mpt_cmd *)arg; + struct mrsas_softc *sc = cmd->sc; + MRSAS_RAID_SCSI_IO_REQUEST *io_request; + pMpi25IeeeSgeChain64_t sgl_ptr; + int i=0, sg_processed=0; + + if (error) + { + cmd->error_code = error; + device_printf(sc->mrsas_dev, "mrsas_data_load_cb: error=%d\n", error); + if (error == EFBIG) { + cmd->ccb_ptr->ccb_h.status = CAM_REQ_TOO_BIG; + return; + } + } + + if (cmd->flags & MRSAS_DIR_IN) + bus_dmamap_sync(cmd->sc->data_tag, cmd->data_dmamap, + BUS_DMASYNC_PREREAD); + if (cmd->flags & MRSAS_DIR_OUT) + bus_dmamap_sync(cmd->sc->data_tag, cmd->data_dmamap, + BUS_DMASYNC_PREWRITE); + if (nseg > sc->max_num_sge) { + device_printf(sc->mrsas_dev, "SGE count is too large or 0.\n"); + return; + } + + io_request = cmd->io_request; + sgl_ptr = (pMpi25IeeeSgeChain64_t)&io_request->SGL; + + if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) { + pMpi25IeeeSgeChain64_t sgl_ptr_end = sgl_ptr; + sgl_ptr_end += sc->max_sge_in_main_msg - 1; + sgl_ptr_end->Flags = 0; + } + + if (nseg != 0) { + for (i=0; i < nseg; i++) { + sgl_ptr->Address = segs[i].ds_addr; + sgl_ptr->Length = segs[i].ds_len; + sgl_ptr->Flags = 0; + if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) { + if (i == nseg - 1) + sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; + } + sgl_ptr++; + sg_processed = i + 1; + /* + * Prepare chain element + */ + if ((sg_processed == (sc->max_sge_in_main_msg - 1)) && + (nseg > sc->max_sge_in_main_msg)) { + pMpi25IeeeSgeChain64_t sg_chain; + if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) { + if ((cmd->io_request->IoFlags & MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) + != MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) + cmd->io_request->ChainOffset = sc->chain_offset_io_request; + else + cmd->io_request->ChainOffset = 0; + } else + cmd->io_request->ChainOffset = sc->chain_offset_io_request; + sg_chain = sgl_ptr; + if ((sc->device_id == MRSAS_INVADER) || (sc->device_id == MRSAS_FURY)) + sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; + else + sg_chain->Flags = (IEEE_SGE_FLAGS_CHAIN_ELEMENT | MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); + sg_chain->Length = (sizeof(MPI2_SGE_IO_UNION) * (nseg - sg_processed)); + sg_chain->Address = cmd->chain_frame_phys_addr; + sgl_ptr = (pMpi25IeeeSgeChain64_t)cmd->chain_frame; + } + } + } + cmd->sge_count = nseg; +} + +/** + * mrsas_freeze_simq: Freeze SIM queue + * input: Pointer to command packet + * Pointer to SIM + * + * This function freezes the sim queue. + */ +static void mrsas_freeze_simq(struct mrsas_mpt_cmd *cmd, struct cam_sim *sim) +{ + union ccb *ccb = (union ccb *)(cmd->ccb_ptr); + + xpt_freeze_simq(sim, 1); + ccb->ccb_h.status |= CAM_RELEASE_SIMQ; + ccb->ccb_h.status |= CAM_REQUEUE_REQ; +} + +void mrsas_xpt_freeze(struct mrsas_softc *sc) { + xpt_freeze_simq(sc->sim_0, 1); + xpt_freeze_simq(sc->sim_1, 1); +} + +void mrsas_xpt_release(struct mrsas_softc *sc) { + xpt_release_simq(sc->sim_0, 1); + xpt_release_simq(sc->sim_1, 1); +} + +/** + * mrsas_cmd_done: Perform remaining command completion + * input: Adapter instance soft state + * Pointer to command packet + * + * This function calls ummap request and releases the MPT command. + */ +void mrsas_cmd_done(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd) +{ + callout_stop(&cmd->cm_callout); + mrsas_unmap_request(sc, cmd); + mtx_lock(&sc->sim_lock); + xpt_done(cmd->ccb_ptr); + cmd->ccb_ptr = NULL; + mtx_unlock(&sc->sim_lock); + mrsas_release_mpt_cmd(cmd); +} + +/** + * mrsas_poll: Polling entry point + * input: Pointer to SIM + * + * This is currently a stub function. + */ +static void mrsas_poll(struct cam_sim *sim) +{ + struct mrsas_softc *sc = (struct mrsas_softc *)cam_sim_softc(sim); + mrsas_isr((void *) sc); +} + +/* + * mrsas_bus_scan: Perform bus scan + * input: Adapter instance soft state + * + * This mrsas_bus_scan function is needed for FreeBSD 7.x. Also, it should + * not be called in FreeBSD 8.x and later versions, where the bus scan is + * automatic. + */ +int mrsas_bus_scan(struct mrsas_softc *sc) +{ + union ccb *ccb_0; + union ccb *ccb_1; + + mtx_lock(&sc->sim_lock); + if ((ccb_0 = xpt_alloc_ccb()) == NULL) { + mtx_unlock(&sc->sim_lock); + return(ENOMEM); + } + + if ((ccb_1 = xpt_alloc_ccb()) == NULL) { + xpt_free_ccb(ccb_0); + mtx_unlock(&sc->sim_lock); + return(ENOMEM); + } + + if (xpt_create_path(&ccb_0->ccb_h.path, xpt_periph, cam_sim_path(sc->sim_0), + CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP){ + xpt_free_ccb(ccb_0); + xpt_free_ccb(ccb_1); + mtx_unlock(&sc->sim_lock); + return(EIO); + } + + if (xpt_create_path(&ccb_1->ccb_h.path, xpt_periph, cam_sim_path(sc->sim_1), + CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP){ + xpt_free_ccb(ccb_0); + xpt_free_ccb(ccb_1); + mtx_unlock(&sc->sim_lock); + return(EIO); + } + + xpt_rescan(ccb_0); + xpt_rescan(ccb_1); + mtx_unlock(&sc->sim_lock); + + return(0); +} + +/* + * mrsas_bus_scan_sim: Perform bus scan per SIM + * input: Adapter instance soft state + * This function will be called from Event handler + * on LD creation/deletion, JBOD on/off. + */ +int mrsas_bus_scan_sim(struct mrsas_softc *sc, struct cam_sim *sim) +{ + union ccb *ccb; + + mtx_lock(&sc->sim_lock); + if ((ccb = xpt_alloc_ccb()) == NULL) { + mtx_unlock(&sc->sim_lock); + return(ENOMEM); + } + if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, cam_sim_path(sim), + CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP){ + xpt_free_ccb(ccb); + mtx_unlock(&sc->sim_lock); + return(EIO); + } + xpt_rescan(ccb); + mtx_unlock(&sc->sim_lock); + + return(0); +} |
