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freebsd-nq/sys/dev/mrsas/mrsas_cam.c
Kashyap D Desai 5437c8b88e fw_outstanding"(outstanding IOs at firmware level) counter gets screwed up when R1 fastpath 
writes are running. Some of the cases which are not handled properly in driver are:

1. With R1 fastpath supported, single write from CAM layer can consume 2 MPT frames
at driver/firmware level for fastpath qualification(if fw_outstanding < controller Queue Depth).
Due to this driver has to throttle IOs coming from CAM layer as well as second fastpath
write(of R1 write) against Adapter Queue Depth.
If "fw_outstanding" reaches to adapter queue depth, driver should return IOs from CAM layer with
device busy status.While allocating second MPT frame(corresponding to R1 FP write) also, driver
should ensure fw_outstanding should not exceed adapter QD.

2. For R1 fastpath writes completion, driver decrements "fw_oustanding" counter without
really returning MPT frame to free pool. It may cause IOs(with heavy IOs running, consuming whole
adapter Queue Depth) consuming MPT frames reserved for DCMDs(management commands) and
DCMDs(internal and sent by application) not getting MPT frame will start failing.

Below is one test case to hit the issue described above-
1. Run heavy IOs (outstanding IOs should hit adapter Queue Depth).
2. Run management tool (Broadcom's storcli tool) querying adapter in loop (run command- "storcli64 /c0 show" in loop).
3. Management tool's requests would start failing due to non-availability of free MPT frames as all frames would be consumed by IOs.

Fix: Increment/decrement of "fw_outstanding" counter should be in sync with MPT frame get/return.

Submitted by: Sumit Saxena <sumit.saxena@broadcom.com>
Reviewed by:  Kashyap Desai <Kashyap.Desai@broadcom.com>
Approved by:  Ken
MFC after:  3 days
Sponsored by:   Broadcom Inc
2019-03-12 09:24:58 +00:00

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/*
* Copyright (c) 2015, AVAGO Tech. All rights reserved. Author: Marian Choy
* Copyright (c) 2014, LSI Corp. All rights reserved. Author: Marian Choy
* Support: freebsdraid@avagotech.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>
#include <sys/kernel.h>
#include <sys/time.h> /* XXX for pcpu.h */
#include <sys/pcpu.h> /* XXX for PCPU_GET */
#define smp_processor_id() PCPU_GET(cpuid)
/*
* Function prototypes
*/
int mrsas_cam_attach(struct mrsas_softc *sc);
int mrsas_find_io_type(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, union ccb *ccb);
int
mrsas_build_ldio_rw(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb);
int
mrsas_build_ldio_nonrw(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb);
int
mrsas_build_syspdio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb, struct cam_sim *sim, u_int8_t fp_possible);
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_DRV_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_cam_poll(struct cam_sim *sim);
static void mrsas_action(struct cam_sim *sim, union ccb *ccb);
static void mrsas_scsiio_timeout(void *data);
static int mrsas_track_scsiio(struct mrsas_softc *sc, target_id_t id, u_int32_t bus_id);
static void mrsas_tm_response_code(struct mrsas_softc *sc,
MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply);
static int mrsas_issue_tm(struct mrsas_softc *sc,
MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc);
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);
static boolean_t mrsas_is_prp_possible(struct mrsas_mpt_cmd *cmd,
bus_dma_segment_t *segs, int nsegs);
static void mrsas_build_ieee_sgl(struct mrsas_mpt_cmd *cmd,
bus_dma_segment_t *segs, int nseg);
static void mrsas_build_prp_nvme(struct mrsas_mpt_cmd *cmd,
bus_dma_segment_t *segs, int nseg);
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 int mrsas_reset_targets(struct mrsas_softc *sc);
extern u_int16_t MR_TargetIdToLdGet(u_int32_t ldTgtId, MR_DRV_RAID_MAP_ALL * map);
extern u_int32_t
MR_LdBlockSizeGet(u_int32_t ldTgtId, MR_DRV_RAID_MAP_ALL * map);
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_DRV_RAID_MAP_ALL * map);
extern u_int16_t
MR_LdSpanArrayGet(u_int32_t ld, u_int32_t span,
MR_DRV_RAID_MAP_ALL * map);
extern u_int16_t
mrsas_get_updated_dev_handle(struct mrsas_softc *sc,
PLD_LOAD_BALANCE_INFO lbInfo, struct IO_REQUEST_INFO *io_info);
extern int mrsas_complete_cmd(struct mrsas_softc *sc, u_int32_t MSIxIndex);
extern MR_LD_RAID *MR_LdRaidGet(u_int32_t ld, MR_DRV_RAID_MAP_ALL * map);
extern void mrsas_disable_intr(struct mrsas_softc *sc);
extern void mrsas_enable_intr(struct mrsas_softc *sc);
void mrsas_prepare_secondRaid1_IO(struct mrsas_softc *sc,
struct mrsas_mpt_cmd *cmd);
/*
* 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_scsi_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_cam_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_cam_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;
/*
* Check if the system going down
* or the adapter is in unrecoverable critical error
*/
if (sc->remove_in_progress ||
(sc->adprecovery == MRSAS_HW_CRITICAL_ERROR)) {
ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
xpt_done(ccb);
return;
}
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;
#if (__FreeBSD_version >= 902001)
ccb->cpi.hba_misc = PIM_UNMAPPED;
#else
ccb->cpi.hba_misc = 0;
#endif
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;
strlcpy(ccb->cpi.sim_vid, "FreeBSD", SIM_IDLEN);
strlcpy(ccb->cpi.hba_vid, "AVAGO", HBA_IDLEN);
strlcpy(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_PD - 1;
else
ccb->cpi.max_target = MRSAS_MAX_LD_IDS - 1;
#if (__FreeBSD_version > 704000)
ccb->cpi.maxio = sc->max_num_sge * MRSAS_PAGE_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
* coming 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;
u_int32_t target_id;
if (!data)
return;
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.
*/
#if (__FreeBSD_version >= 1000510)
callout_reset_sbt(&cmd->cm_callout, SBT_1S * 180, 0,
mrsas_scsiio_timeout, cmd, 0);
#else
callout_reset(&cmd->cm_callout, (180000 * hz) / 1000,
mrsas_scsiio_timeout, cmd);
#endif
if (cmd->ccb_ptr->cpi.bus_id == 0)
target_id = cmd->ccb_ptr->ccb_h.target_id;
else
target_id = (cmd->ccb_ptr->ccb_h.target_id + (MRSAS_MAX_PD - 1));
/* Save the cmd to be processed for TM, if it is not there in the array */
if (sc->target_reset_pool[target_id] == NULL) {
sc->target_reset_pool[target_id] = cmd;
mrsas_atomic_inc(&sc->target_reset_outstanding);
}
return;
}
/*
* 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, *r1_cmd = NULL;
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
struct ccb_scsiio *csio = &(ccb->csio);
MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc;
u_int8_t cmd_type;
if ((csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE &&
(!sc->fw_sync_cache_support)) {
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
return (0);
}
ccb_h->status |= CAM_SIM_QUEUED;
if (mrsas_atomic_inc_return(&sc->fw_outstanding) > sc->max_scsi_cmds) {
ccb_h->status |= CAM_REQUEUE_REQ;
xpt_done(ccb);
mrsas_atomic_dec(&sc->fw_outstanding);
return (0);
}
cmd = mrsas_get_mpt_cmd(sc);
if (!cmd) {
ccb_h->status |= CAM_REQUEUE_REQ;
xpt_done(ccb);
mrsas_atomic_dec(&sc->fw_outstanding);
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 9.2 and higher */
#if (__FreeBSD_version >= 902001)
/*
* 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:
device_printf(sc->mrsas_dev, "%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:
device_printf(sc->mrsas_dev, "%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 > (sc->max_num_sge * MRSAS_PAGE_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;
case CAM_DATA_BIO:
if (csio->dxfer_len > (sc->max_num_sge * MRSAS_PAGE_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 > (sc->max_num_sge * MRSAS_PAGE_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);
/* Check for IO type READ-WRITE targeted for Logical Volume */
cmd_type = mrsas_find_io_type(sim, ccb);
switch (cmd_type) {
case READ_WRITE_LDIO:
/* Build READ-WRITE IO for Logical Volume */
if (mrsas_build_ldio_rw(sc, cmd, ccb)) {
device_printf(sc->mrsas_dev, "Build RW LDIO failed.\n");
mtx_unlock(&sc->raidmap_lock);
mrsas_release_mpt_cmd(cmd);
return (1);
}
break;
case NON_READ_WRITE_LDIO:
/* Build NON READ-WRITE IO for Logical Volume */
if (mrsas_build_ldio_nonrw(sc, cmd, ccb)) {
device_printf(sc->mrsas_dev, "Build NON-RW LDIO failed.\n");
mtx_unlock(&sc->raidmap_lock);
mrsas_release_mpt_cmd(cmd);
return (1);
}
break;
case READ_WRITE_SYSPDIO:
case NON_READ_WRITE_SYSPDIO:
if (sc->secure_jbod_support &&
(cmd_type == NON_READ_WRITE_SYSPDIO)) {
/* Build NON-RW IO for JBOD */
if (mrsas_build_syspdio(sc, cmd, ccb, sim, 0)) {
device_printf(sc->mrsas_dev,
"Build SYSPDIO failed.\n");
mtx_unlock(&sc->raidmap_lock);
mrsas_release_mpt_cmd(cmd);
return (1);
}
} else {
/* Build RW IO for JBOD */
if (mrsas_build_syspdio(sc, cmd, ccb, sim, 1)) {
device_printf(sc->mrsas_dev,
"Build SYSPDIO failed.\n");
mtx_unlock(&sc->raidmap_lock);
mrsas_release_mpt_cmd(cmd);
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.
*/
cmd->callout_owner = true;
#if (__FreeBSD_version >= 1000510)
callout_reset_sbt(&cmd->cm_callout, SBT_1S * 180, 0,
mrsas_scsiio_timeout, cmd, 0);
#else
callout_reset(&cmd->cm_callout, (180000 * hz) / 1000,
mrsas_scsiio_timeout, cmd);
#endif
if (mrsas_atomic_read(&sc->fw_outstanding) > sc->io_cmds_highwater)
sc->io_cmds_highwater++;
/*
* if it is raid 1/10 fp write capable.
* try to get second command from pool and construct it.
* From FW, it has confirmed that lba values of two PDs corresponds to
* single R1/10 LD are always same
*
*/
/*
* driver side count always should be less than max_fw_cmds to get
* new command
*/
if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
mrsas_prepare_secondRaid1_IO(sc, cmd);
mrsas_fire_cmd(sc, req_desc->addr.u.low,
req_desc->addr.u.high);
r1_cmd = cmd->peer_cmd;
mrsas_fire_cmd(sc, r1_cmd->request_desc->addr.u.low,
r1_cmd->request_desc->addr.u.high);
} else {
mrsas_fire_cmd(sc, req_desc->addr.u.low,
req_desc->addr.u.high);
}
return (0);
done:
xpt_done(ccb);
mrsas_atomic_dec(&sc->fw_outstanding);
return (0);
}
/*
* mrsas_find_io_type: 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_find_io_type(struct cam_sim *sim, union ccb *ccb)
{
struct ccb_scsiio *csio = &(ccb->csio);
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 (cam_sim_bus(sim) ?
READ_WRITE_SYSPDIO : READ_WRITE_LDIO);
default:
return (cam_sim_bus(sim) ?
NON_READ_WRITE_SYSPDIO : NON_READ_WRITE_LDIO);
}
}
/*
* 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);
} else {
goto out;
}
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;
out:
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->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
cmd->sync_cmd_idx = (u_int32_t)MRSAS_ULONG_MAX;
cmd->peer_cmd = NULL;
cmd->cmd_completed = 0;
memset((uint8_t *)cmd->io_request, 0,
sizeof(MRSAS_RAID_SCSI_IO_REQUEST));
TAILQ_INSERT_HEAD(&(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;
KASSERT(index < sc->max_fw_cmds, ("req_desc is out of range"));
p = sc->req_desc + sizeof(MRSAS_REQUEST_DESCRIPTOR_UNION) * index;
return (MRSAS_REQUEST_DESCRIPTOR_UNION *) p;
}
/* mrsas_prepare_secondRaid1_IO
* It prepares the raid 1 second IO
*/
void
mrsas_prepare_secondRaid1_IO(struct mrsas_softc *sc,
struct mrsas_mpt_cmd *cmd)
{
MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
struct mrsas_mpt_cmd *r1_cmd;
r1_cmd = cmd->peer_cmd;
req_desc = cmd->request_desc;
/*
* copy the io request frame as well as 8 SGEs data for r1
* command
*/
memcpy(r1_cmd->io_request, cmd->io_request,
(sizeof(MRSAS_RAID_SCSI_IO_REQUEST)));
memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
(sc->max_sge_in_main_msg * sizeof(MPI2_SGE_IO_UNION)));
/* sense buffer is different for r1 command */
r1_cmd->io_request->SenseBufferLowAddress = r1_cmd->sense_phys_addr;
r1_cmd->ccb_ptr = cmd->ccb_ptr;
req_desc2 = mrsas_get_request_desc(sc, r1_cmd->index - 1);
req_desc2->addr.Words = 0;
r1_cmd->request_desc = req_desc2;
req_desc2->SCSIIO.SMID = r1_cmd->index;
req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
cmd->io_request->RaidContext.raid_context_g35.smid.peerSMID =
r1_cmd->index;
r1_cmd->io_request->RaidContext.raid_context_g35.smid.peerSMID =
cmd->index;
/*
* MSIxIndex of both commands request descriptors
* should be same
*/
r1_cmd->request_desc->SCSIIO.MSIxIndex = cmd->request_desc->SCSIIO.MSIxIndex;
/* span arm is different for r1 cmd */
r1_cmd->io_request->RaidContext.raid_context_g35.spanArm =
cmd->io_request->RaidContext.raid_context_g35.spanArm + 1;
}
/*
* mrsas_build_ldio_rw: 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_rw(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.raid_context.VirtualDiskTgtId = device_id;
io_request->RaidContext.raid_context.status = 0;
io_request->RaidContext.raid_context.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, ccb) == 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 (FAIL);
}
if (sc->is_ventura || sc->is_aero)
io_request->RaidContext.raid_context_g35.numSGE = cmd->sge_count;
else {
/*
* numSGE store lower 8 bit of sge_count. numSGEExt store
* higher 8 bit of sge_count
*/
io_request->RaidContext.raid_context.numSGE = cmd->sge_count;
io_request->RaidContext.raid_context.numSGEExt = (uint8_t)(cmd->sge_count >> 8);
}
} else {
device_printf(sc->mrsas_dev, "Data map/load failed.\n");
return (FAIL);
}
return (0);
}
/* stream detection on read and and write IOs */
static void
mrsas_stream_detect(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
struct IO_REQUEST_INFO *io_info)
{
u_int32_t device_id = io_info->ldTgtId;
LD_STREAM_DETECT *current_ld_SD = sc->streamDetectByLD[device_id];
u_int32_t *track_stream = &current_ld_SD->mruBitMap;
u_int32_t streamNum, shiftedValues, unshiftedValues;
u_int32_t indexValueMask, shiftedValuesMask;
int i;
boolean_t isReadAhead = false;
STREAM_DETECT *current_SD;
/* find possible stream */
for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
streamNum = (*track_stream >> (i * BITS_PER_INDEX_STREAM)) &
STREAM_MASK;
current_SD = &current_ld_SD->streamTrack[streamNum];
/*
* if we found a stream, update the raid context and
* also update the mruBitMap
*/
if (current_SD->nextSeqLBA &&
io_info->ldStartBlock >= current_SD->nextSeqLBA &&
(io_info->ldStartBlock <= (current_SD->nextSeqLBA+32)) &&
(current_SD->isRead == io_info->isRead)) {
if (io_info->ldStartBlock != current_SD->nextSeqLBA &&
(!io_info->isRead || !isReadAhead)) {
/*
* Once the API availible we need to change this.
* At this point we are not allowing any gap
*/
continue;
}
cmd->io_request->RaidContext.raid_context_g35.streamDetected = TRUE;
current_SD->nextSeqLBA = io_info->ldStartBlock + io_info->numBlocks;
/*
* update the mruBitMap LRU
*/
shiftedValuesMask = (1 << i * BITS_PER_INDEX_STREAM) - 1 ;
shiftedValues = ((*track_stream & shiftedValuesMask) <<
BITS_PER_INDEX_STREAM);
indexValueMask = STREAM_MASK << i * BITS_PER_INDEX_STREAM;
unshiftedValues = (*track_stream) &
(~(shiftedValuesMask | indexValueMask));
*track_stream =
(unshiftedValues | shiftedValues | streamNum);
return;
}
}
/*
* if we did not find any stream, create a new one from the least recently used
*/
streamNum = (*track_stream >>
((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & STREAM_MASK;
current_SD = &current_ld_SD->streamTrack[streamNum];
current_SD->isRead = io_info->isRead;
current_SD->nextSeqLBA = io_info->ldStartBlock + io_info->numBlocks;
*track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | streamNum);
return;
}
/*
* 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_DRV_RAID_MAP_ALL *map_ptr;
struct mrsas_mpt_cmd *r1_cmd = NULL;
MR_LD_RAID *raid;
u_int8_t fp_possible;
u_int32_t start_lba_hi, start_lba_lo, ld_block_size, ld;
u_int32_t datalength = 0;
io_request->RaidContext.raid_context.VirtualDiskTgtId = device_id;
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;
io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
io_request->DataLength = cmd->length;
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->ld_drv_map[(sc->map_id & 1)];
ld_block_size = MR_LdBlockSizeGet(device_id, map_ptr);
ld = MR_TargetIdToLdGet(device_id, map_ptr);
if ((ld >= MAX_LOGICAL_DRIVES_EXT) || (!sc->fast_path_io)) {
io_request->RaidContext.raid_context.regLockFlags = 0;
fp_possible = 0;
} else {
if (MR_BuildRaidContext(sc, &io_info, &io_request->RaidContext.raid_context, map_ptr))
fp_possible = io_info.fpOkForIo;
}
raid = MR_LdRaidGet(ld, map_ptr);
/* Store the TM capability value in cmd */
cmd->tmCapable = raid->capability.tmCapable;
cmd->request_desc->SCSIIO.MSIxIndex =
sc->msix_vectors ? smp_processor_id() % sc->msix_vectors : 0;
if (sc->is_ventura || sc->is_aero) {
if (sc->streamDetectByLD) {
mtx_lock(&sc->stream_lock);
mrsas_stream_detect(sc, cmd, &io_info);
mtx_unlock(&sc->stream_lock);
/* In ventura if stream detected for a read and
* it is read ahead capable make this IO as LDIO */
if (io_request->RaidContext.raid_context_g35.streamDetected &&
io_info.isRead && io_info.raCapable)
fp_possible = FALSE;
}
/* Set raid 1/10 fast path write capable bit in io_info.
* Note - reset peer_cmd and r1_alt_dev_handle if fp_possible
* disabled after this point. Try not to add more check for
* fp_possible toggle after this.
*/
if (fp_possible &&
(io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) &&
(raid->level == 1) && !io_info.isRead) {
r1_cmd = mrsas_get_mpt_cmd(sc);
if (mrsas_atomic_inc_return(&sc->fw_outstanding) > sc->max_scsi_cmds) {
fp_possible = FALSE;
mrsas_atomic_dec(&sc->fw_outstanding);
} else {
r1_cmd = mrsas_get_mpt_cmd(sc);
if (!r1_cmd) {
fp_possible = FALSE;
mrsas_atomic_dec(&sc->fw_outstanding);
}
else {
cmd->peer_cmd = r1_cmd;
r1_cmd->peer_cmd = cmd;
}
}
}
}
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_FP_IO <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
if (sc->mrsas_gen3_ctrl) {
if (io_request->RaidContext.raid_context.regLockFlags == REGION_TYPE_UNUSED)
cmd->request_desc->SCSIIO.RequestFlags =
(MRSAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
io_request->RaidContext.raid_context.Type = MPI2_TYPE_CUDA;
io_request->RaidContext.raid_context.nseg = 0x1;
io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
io_request->RaidContext.raid_context.regLockFlags |=
(MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
MR_RL_FLAGS_SEQ_NUM_ENABLE);
} else if (sc->is_ventura || sc->is_aero) {
io_request->RaidContext.raid_context_g35.Type = MPI2_TYPE_CUDA;
io_request->RaidContext.raid_context_g35.nseg = 0x1;
io_request->RaidContext.raid_context_g35.routingFlags.bits.sqn = 1;
io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
if (io_request->RaidContext.raid_context_g35.routingFlags.bits.sld) {
io_request->RaidContext.raid_context_g35.RAIDFlags =
(MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
<< MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
}
}
if ((sc->load_balance_info[device_id].loadBalanceFlag) &&
(io_info.isRead)) {
io_info.devHandle =
mrsas_get_updated_dev_handle(sc,
&sc->load_balance_info[device_id], &io_info);
cmd->load_balance = MRSAS_LOAD_BALANCE_FLAG;
cmd->pd_r1_lb = io_info.pd_after_lb;
if (sc->is_ventura || sc->is_aero)
io_request->RaidContext.raid_context_g35.spanArm = io_info.span_arm;
else
io_request->RaidContext.raid_context.spanArm = io_info.span_arm;
} else
cmd->load_balance = 0;
if (sc->is_ventura || sc->is_aero)
cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
else
cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
io_request->DevHandle = io_info.devHandle;
cmd->pdInterface = io_info.pdInterface;
} else {
/* Not FP IO */
io_request->RaidContext.raid_context.timeoutValue = map_ptr->raidMap.fpPdIoTimeoutSec;
cmd->request_desc->SCSIIO.RequestFlags =
(MRSAS_REQ_DESCRIPT_FLAGS_LD_IO <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
if (sc->mrsas_gen3_ctrl) {
if (io_request->RaidContext.raid_context.regLockFlags == REGION_TYPE_UNUSED)
cmd->request_desc->SCSIIO.RequestFlags =
(MRSAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
io_request->RaidContext.raid_context.Type = MPI2_TYPE_CUDA;
io_request->RaidContext.raid_context.regLockFlags |=
(MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
MR_RL_FLAGS_SEQ_NUM_ENABLE);
io_request->RaidContext.raid_context.nseg = 0x1;
} else if (sc->is_ventura || sc->is_aero) {
io_request->RaidContext.raid_context_g35.Type = MPI2_TYPE_CUDA;
io_request->RaidContext.raid_context_g35.routingFlags.bits.sqn = 1;
io_request->RaidContext.raid_context_g35.nseg = 0x1;
}
io_request->Function = MRSAS_MPI2_FUNCTION_LD_IO_REQUEST;
io_request->DevHandle = device_id;
}
return (0);
}
/*
* mrsas_build_ldio_nonrw: 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_nonrw(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb)
{
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
u_int32_t device_id, ld;
MR_DRV_RAID_MAP_ALL *map_ptr;
MR_LD_RAID *raid;
RAID_CONTEXT *pRAID_Context;
MRSAS_RAID_SCSI_IO_REQUEST *io_request;
io_request = cmd->io_request;
device_id = ccb_h->target_id;
map_ptr = sc->ld_drv_map[(sc->map_id & 1)];
ld = MR_TargetIdToLdGet(device_id, map_ptr);
raid = MR_LdRaidGet(ld, map_ptr);
/* get RAID_Context pointer */
pRAID_Context = &io_request->RaidContext.raid_context;
/* Store the TM capability value in cmd */
cmd->tmCapable = raid->capability.tmCapable;
/* FW path for LD Non-RW (SCSI management commands) */
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.raid_context.VirtualDiskTgtId = device_id;
io_request->LUN[1] = ccb_h->target_lun & 0xF;
io_request->DataLength = cmd->length;
if (mrsas_map_request(sc, cmd, ccb) == 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);
}
if (sc->is_ventura || sc->is_aero)
io_request->RaidContext.raid_context_g35.numSGE = cmd->sge_count;
else {
/*
* numSGE store lower 8 bit of sge_count. numSGEExt store
* higher 8 bit of sge_count
*/
io_request->RaidContext.raid_context.numSGE = cmd->sge_count;
io_request->RaidContext.raid_context.numSGEExt = (uint8_t)(cmd->sge_count >> 8);
}
} else {
device_printf(sc->mrsas_dev, "Data map/load failed.\n");
return (1);
}
return (0);
}
/*
* mrsas_build_syspdio: 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_syspdio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
union ccb *ccb, struct cam_sim *sim, u_int8_t fp_possible)
{
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
u_int32_t device_id;
MR_DRV_RAID_MAP_ALL *local_map_ptr;
MRSAS_RAID_SCSI_IO_REQUEST *io_request;
RAID_CONTEXT *pRAID_Context;
struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
io_request = cmd->io_request;
/* get RAID_Context pointer */
pRAID_Context = &io_request->RaidContext.raid_context;
device_id = ccb_h->target_id;
local_map_ptr = sc->ld_drv_map[(sc->map_id & 1)];
io_request->RaidContext.raid_context.RAIDFlags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
<< MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
io_request->RaidContext.raid_context.regLockFlags = 0;
io_request->RaidContext.raid_context.regLockRowLBA = 0;
io_request->RaidContext.raid_context.regLockLength = 0;
cmd->pdInterface = sc->target_list[device_id].interface_type;
/* If FW supports PD sequence number */
if (sc->use_seqnum_jbod_fp &&
sc->pd_list[device_id].driveType == 0x00) {
//printf("Using Drv seq num\n");
pd_sync = (void *)sc->jbodmap_mem[(sc->pd_seq_map_id - 1) & 1];
cmd->tmCapable = pd_sync->seq[device_id].capability.tmCapable;
/* More than 256 PD/JBOD support for Ventura */
if (sc->support_morethan256jbod)
io_request->RaidContext.raid_context.VirtualDiskTgtId =
pd_sync->seq[device_id].pdTargetId;
else
io_request->RaidContext.raid_context.VirtualDiskTgtId =
device_id + 255;
io_request->RaidContext.raid_context.configSeqNum = pd_sync->seq[device_id].seqNum;
io_request->DevHandle = pd_sync->seq[device_id].devHandle;
if (sc->is_ventura || sc->is_aero)
io_request->RaidContext.raid_context_g35.routingFlags.bits.sqn = 1;
else
io_request->RaidContext.raid_context.regLockFlags |=
(MR_RL_FLAGS_SEQ_NUM_ENABLE | MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
/* raid_context.Type = MPI2_TYPE_CUDA is valid only,
* if FW support Jbod Sequence number
*/
io_request->RaidContext.raid_context.Type = MPI2_TYPE_CUDA;
io_request->RaidContext.raid_context.nseg = 0x1;
} else if (sc->fast_path_io) {
//printf("Using LD RAID map\n");
io_request->RaidContext.raid_context.VirtualDiskTgtId = device_id;
io_request->RaidContext.raid_context.configSeqNum = 0;
local_map_ptr = sc->ld_drv_map[(sc->map_id & 1)];
io_request->DevHandle =
local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
} else {
//printf("Using FW PATH\n");
/* Want to send all IO via FW path */
io_request->RaidContext.raid_context.VirtualDiskTgtId = device_id;
io_request->RaidContext.raid_context.configSeqNum = 0;
io_request->DevHandle = MR_DEVHANDLE_INVALID;
}
cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
cmd->request_desc->SCSIIO.MSIxIndex =
sc->msix_vectors ? smp_processor_id() % sc->msix_vectors : 0;
if (!fp_possible) {
/* system pd firmware path */
io_request->Function = MRSAS_MPI2_FUNCTION_LD_IO_REQUEST;
cmd->request_desc->SCSIIO.RequestFlags =
(MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
io_request->RaidContext.raid_context.timeoutValue =
local_map_ptr->raidMap.fpPdIoTimeoutSec;
io_request->RaidContext.raid_context.VirtualDiskTgtId = device_id;
} else {
/* system pd fast path */
io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
io_request->RaidContext.raid_context.timeoutValue = local_map_ptr->raidMap.fpPdIoTimeoutSec;
/*
* NOTE - For system pd RW cmds only IoFlags will be FAST_PATH
* Because the NON RW cmds will now go via FW Queue
* and not the Exception queue
*/
if (sc->mrsas_gen3_ctrl || sc->is_ventura || sc->is_aero)
io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
cmd->request_desc->SCSIIO.RequestFlags =
(MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
}
io_request->LUN[1] = ccb_h->target_lun & 0xF;
io_request->DataLength = cmd->length;
if (mrsas_map_request(sc, cmd, ccb) == 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);
}
if (sc->is_ventura || sc->is_aero)
io_request->RaidContext.raid_context_g35.numSGE = cmd->sge_count;
else {
/*
* numSGE store lower 8 bit of sge_count. numSGEExt store
* higher 8 bit of sge_count
*/
io_request->RaidContext.raid_context.numSGE = cmd->sge_count;
io_request->RaidContext.raid_context.numSGEExt = (uint8_t)(cmd->sge_count >> 8);
}
} else {
device_printf(sc->mrsas_dev, "Data map/load failed.\n");
return (1);
}
return (0);
}
/*
* mrsas_is_prp_possible: This function will tell whether PRPs should be built or not
* sc: Adapter instance soft state
* cmd: MPT command frame pointer
* nsesg: Number of OS SGEs
*
* This function will check whether IO is qualified to build PRPs
* return: true: if PRP should be built
* false: if IEEE SGLs should be built
*/
static boolean_t mrsas_is_prp_possible(struct mrsas_mpt_cmd *cmd,
bus_dma_segment_t *segs, int nsegs)
{
struct mrsas_softc *sc = cmd->sc;
int i;
u_int32_t data_length = 0;
bool build_prp = false;
u_int32_t mr_nvme_pg_size;
mr_nvme_pg_size = max(sc->nvme_page_size, MR_DEFAULT_NVME_PAGE_SIZE);
data_length = cmd->length;
if (data_length > (mr_nvme_pg_size * 5))
build_prp = true;
else if ((data_length > (mr_nvme_pg_size * 4)) &&
(data_length <= (mr_nvme_pg_size * 5))) {
/* check if 1st SG entry size is < residual beyond 4 pages */
if ((segs[0].ds_len) < (data_length - (mr_nvme_pg_size * 4)))
build_prp = true;
}
/*check for SGE holes here*/
for (i = 0; i < nsegs; i++) {
/* check for mid SGEs */
if ((i != 0) && (i != (nsegs - 1))) {
if ((segs[i].ds_addr % mr_nvme_pg_size) ||
(segs[i].ds_len % mr_nvme_pg_size)) {
build_prp = false;
mrsas_atomic_inc(&sc->sge_holes);
break;
}
}
/* check for first SGE*/
if ((nsegs > 1) && (i == 0)) {
if ((segs[i].ds_addr + segs[i].ds_len) % mr_nvme_pg_size) {
build_prp = false;
mrsas_atomic_inc(&sc->sge_holes);
break;
}
}
/* check for Last SGE*/
if ((nsegs > 1) && (i == (nsegs - 1))) {
if (segs[i].ds_addr % mr_nvme_pg_size) {
build_prp = false;
mrsas_atomic_inc(&sc->sge_holes);
break;
}
}
}
return build_prp;
}
/*
* 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, union ccb *ccb)
{
u_int32_t retcode = 0;
struct cam_sim *sim;
sim = xpt_path_sim(cmd->ccb_ptr->ccb_h.path);
if (cmd->data != NULL) {
/* Map data buffer into bus space */
mtx_lock(&sc->io_lock);
#if (__FreeBSD_version >= 902001)
retcode = bus_dmamap_load_ccb(sc->data_tag, cmd->data_dmamap, ccb,
mrsas_data_load_cb, cmd, 0);
#else
retcode = bus_dmamap_load(sc->data_tag, cmd->data_dmamap, cmd->data,
cmd->length, mrsas_data_load_cb, cmd, BUS_DMA_NOWAIT);
#endif
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_build_ieee_sgl - Prepare IEEE SGLs
* @sc: Adapter soft state
* @segs: OS SGEs pointers
* @nseg: Number of OS SGEs
* @cmd: Fusion command frame
* return: void
*/
static void mrsas_build_ieee_sgl(struct mrsas_mpt_cmd *cmd, bus_dma_segment_t *segs, int nseg)
{
struct mrsas_softc *sc = cmd->sc;
MRSAS_RAID_SCSI_IO_REQUEST *io_request;
pMpi25IeeeSgeChain64_t sgl_ptr;
int i = 0, sg_processed = 0;
io_request = cmd->io_request;
sgl_ptr = (pMpi25IeeeSgeChain64_t)&io_request->SGL;
if (sc->mrsas_gen3_ctrl || sc->is_ventura || sc->is_aero) {
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->mrsas_gen3_ctrl || sc->is_ventura || sc->is_aero) {
if (i == nseg - 1)
sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
}
sgl_ptr++;
sg_processed = i + 1;
if ((sg_processed == (sc->max_sge_in_main_msg - 1)) &&
(nseg > sc->max_sge_in_main_msg)) {
pMpi25IeeeSgeChain64_t sg_chain;
if (sc->mrsas_gen3_ctrl || sc->is_ventura || sc->is_aero) {
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->mrsas_gen3_ctrl || sc->is_ventura || sc->is_aero)
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;
}
}
}
}
/**
* mrsas_build_prp_nvme - Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
* @sc: Adapter soft state
* @segs: OS SGEs pointers
* @nseg: Number of OS SGEs
* @cmd: Fusion command frame
* return: void
*/
static void mrsas_build_prp_nvme(struct mrsas_mpt_cmd *cmd, bus_dma_segment_t *segs, int nseg)
{
struct mrsas_softc *sc = cmd->sc;
int sge_len, offset, num_prp_in_chain = 0;
pMpi25IeeeSgeChain64_t main_chain_element, ptr_first_sgl, sgl_ptr;
u_int64_t *ptr_sgl;
bus_addr_t ptr_sgl_phys;
u_int64_t sge_addr;
u_int32_t page_mask, page_mask_result, i = 0;
u_int32_t first_prp_len;
int data_len = cmd->length;
u_int32_t mr_nvme_pg_size = max(sc->nvme_page_size,
MR_DEFAULT_NVME_PAGE_SIZE);
sgl_ptr = (pMpi25IeeeSgeChain64_t) &cmd->io_request->SGL;
/*
* NVMe has a very convoluted PRP format. One PRP is required
* for each page or partial page. We need to split up OS SG
* entries if they are longer than one page or cross a page
* boundary. We also have to insert a PRP list pointer entry as
* the last entry in each physical page of the PRP list.
*
* NOTE: The first PRP "entry" is actually placed in the first
* SGL entry in the main message in IEEE 64 format. The 2nd
* entry in the main message is the chain element, and the rest
* of the PRP entries are built in the contiguous PCIe buffer.
*/
page_mask = mr_nvme_pg_size - 1;
ptr_sgl = (u_int64_t *) cmd->chain_frame;
ptr_sgl_phys = cmd->chain_frame_phys_addr;
memset(ptr_sgl, 0, sc->max_chain_frame_sz);
/* Build chain frame element which holds all PRPs except first*/
main_chain_element = (pMpi25IeeeSgeChain64_t)
((u_int8_t *)sgl_ptr + sizeof(MPI25_IEEE_SGE_CHAIN64));
main_chain_element->Address = cmd->chain_frame_phys_addr;
main_chain_element->NextChainOffset = 0;
main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
IEEE_SGE_FLAGS_SYSTEM_ADDR |
MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
/* Build first PRP, SGE need not to be PAGE aligned*/
ptr_first_sgl = sgl_ptr;
sge_addr = segs[i].ds_addr;
sge_len = segs[i].ds_len;
i++;
offset = (u_int32_t) (sge_addr & page_mask);
first_prp_len = mr_nvme_pg_size - offset;
ptr_first_sgl->Address = sge_addr;
ptr_first_sgl->Length = first_prp_len;
data_len -= first_prp_len;
if (sge_len > first_prp_len) {
sge_addr += first_prp_len;
sge_len -= first_prp_len;
} else if (sge_len == first_prp_len) {
sge_addr = segs[i].ds_addr;
sge_len = segs[i].ds_len;
i++;
}
for (;;) {
offset = (u_int32_t) (sge_addr & page_mask);
/* Put PRP pointer due to page boundary*/
page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
if (!page_mask_result) {
device_printf(sc->mrsas_dev, "BRCM: Put prp pointer as we are at page boundary"
" ptr_sgl: 0x%p\n", ptr_sgl);
ptr_sgl_phys++;
*ptr_sgl = (uintptr_t)ptr_sgl_phys;
ptr_sgl++;
num_prp_in_chain++;
}
*ptr_sgl = sge_addr;
ptr_sgl++;
ptr_sgl_phys++;
num_prp_in_chain++;
sge_addr += mr_nvme_pg_size;
sge_len -= mr_nvme_pg_size;
data_len -= mr_nvme_pg_size;
if (data_len <= 0)
break;
if (sge_len > 0)
continue;
sge_addr = segs[i].ds_addr;
sge_len = segs[i].ds_len;
i++;
}
main_chain_element->Length = num_prp_in_chain * sizeof(u_int64_t);
mrsas_atomic_inc(&sc->prp_count);
}
/*
* mrsas_data_load_cb: Callback entry point to build SGLs
* 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 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;
boolean_t build_prp = false;
if (error) {
cmd->error_code = error;
device_printf(sc->mrsas_dev, "mrsas_data_load_cb_prp: 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;
}
/* Check for whether PRPs should be built or IEEE SGLs*/
if ((cmd->io_request->IoFlags & MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
(cmd->pdInterface == NVME_PD))
build_prp = mrsas_is_prp_possible(cmd, segs, nseg);
if (build_prp == true)
mrsas_build_prp_nvme(cmd, segs, nseg);
else
mrsas_build_ieee_sgl(cmd, segs, nseg);
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)
{
mrsas_unmap_request(sc, cmd);
mtx_lock(&sc->sim_lock);
if (cmd->callout_owner) {
callout_stop(&cmd->cm_callout);
cmd->callout_owner = false;
}
xpt_done(cmd->ccb_ptr);
cmd->ccb_ptr = NULL;
mtx_unlock(&sc->sim_lock);
mrsas_release_mpt_cmd(cmd);
}
/*
* mrsas_cam_poll: Polling entry point
* input: Pointer to SIM
*
* This is currently a stub function.
*/
static void
mrsas_cam_poll(struct cam_sim *sim)
{
int i;
struct mrsas_softc *sc = (struct mrsas_softc *)cam_sim_softc(sim);
if (sc->msix_vectors != 0){
for (i=0; i<sc->msix_vectors; i++){
mrsas_complete_cmd(sc, i);
}
} else {
mrsas_complete_cmd(sc, 0);
}
}
/*
* 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;
if ((ccb_0 = xpt_alloc_ccb()) == NULL) {
return (ENOMEM);
}
if ((ccb_1 = xpt_alloc_ccb()) == NULL) {
xpt_free_ccb(ccb_0);
return (ENOMEM);
}
mtx_lock(&sc->sim_lock);
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);
}
mtx_unlock(&sc->sim_lock);
xpt_rescan(ccb_0);
xpt_rescan(ccb_1);
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;
if ((ccb = xpt_alloc_ccb()) == NULL) {
return (ENOMEM);
}
mtx_lock(&sc->sim_lock);
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);
}
mtx_unlock(&sc->sim_lock);
xpt_rescan(ccb);
return (0);
}
/*
* mrsas_track_scsiio: Track IOs for a given target in the mpt_cmd_list
* input: Adapter instance soft state
* Target ID of target
* Bus ID of the target
*
* This function checks for any pending IO in the whole mpt_cmd_list pool
* with the bus_id and target_id passed in arguments. If some IO is found
* that means target reset is not successfully completed.
*
* Returns FAIL if IOs pending to the target device, else return SUCCESS
*/
static int
mrsas_track_scsiio(struct mrsas_softc *sc, target_id_t tgt_id, u_int32_t bus_id)
{
int i;
struct mrsas_mpt_cmd *mpt_cmd = NULL;
for (i = 0 ; i < sc->max_fw_cmds; i++) {
mpt_cmd = sc->mpt_cmd_list[i];
/*
* Check if the target_id and bus_id is same as the timeout IO
*/
if (mpt_cmd->ccb_ptr) {
/* bus_id = 1 denotes a VD */
if (bus_id == 1)
tgt_id = (mpt_cmd->ccb_ptr->ccb_h.target_id - (MRSAS_MAX_PD - 1));
if (mpt_cmd->ccb_ptr->cpi.bus_id == bus_id &&
mpt_cmd->ccb_ptr->ccb_h.target_id == tgt_id) {
device_printf(sc->mrsas_dev,
"IO commands pending to target id %d\n", tgt_id);
return FAIL;
}
}
}
return SUCCESS;
}
#if TM_DEBUG
/*
* mrsas_tm_response_code: Prints TM response code received from FW
* input: Adapter instance soft state
* MPI reply returned from firmware
*
* Returns nothing.
*/
static void
mrsas_tm_response_code(struct mrsas_softc *sc,
MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
{
char *desc;
switch (mpi_reply->ResponseCode) {
case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
desc = "task management request completed";
break;
case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
desc = "invalid frame";
break;
case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
desc = "task management request not supported";
break;
case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
desc = "task management request failed";
break;
case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
desc = "task management request succeeded";
break;
case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
desc = "invalid lun";
break;
case 0xA:
desc = "overlapped tag attempted";
break;
case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
desc = "task queued, however not sent to target";
break;
default:
desc = "unknown";
break;
}
device_printf(sc->mrsas_dev, "response_code(%01x): %s\n",
mpi_reply->ResponseCode, desc);
device_printf(sc->mrsas_dev,
"TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo\n"
"0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
mpi_reply->TerminationCount, mpi_reply->DevHandle,
mpi_reply->Function, mpi_reply->TaskType,
mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
}
#endif
/*
* mrsas_issue_tm: Fires the TM command to FW and waits for completion
* input: Adapter instance soft state
* reqest descriptor compiled by mrsas_reset_targets
*
* Returns FAIL if TM command TIMEDOUT from FW else SUCCESS.
*/
static int
mrsas_issue_tm(struct mrsas_softc *sc,
MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc)
{
int sleep_stat;
mrsas_fire_cmd(sc, req_desc->addr.u.low, req_desc->addr.u.high);
sleep_stat = msleep(&sc->ocr_chan, &sc->sim_lock, PRIBIO, "tm_sleep", 50*hz);
if (sleep_stat == EWOULDBLOCK) {
device_printf(sc->mrsas_dev, "tm cmd TIMEDOUT\n");
return FAIL;
}
return SUCCESS;
}
/*
* mrsas_reset_targets : Gathers info to fire a target reset command
* input: Adapter instance soft state
*
* This function compiles data for a target reset command to be fired to the FW
* and then traverse the target_reset_pool to see targets with TIMEDOUT IOs.
*
* Returns SUCCESS or FAIL
*/
int mrsas_reset_targets(struct mrsas_softc *sc)
{
struct mrsas_mpt_cmd *tm_mpt_cmd = NULL;
struct mrsas_mpt_cmd *tgt_mpt_cmd = NULL;
MR_TASK_MANAGE_REQUEST *mr_request;
MPI2_SCSI_TASK_MANAGE_REQUEST *tm_mpi_request;
MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc;
int retCode = FAIL, count, i, outstanding;
u_int32_t MSIxIndex, bus_id;
target_id_t tgt_id;
#if TM_DEBUG
MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
#endif
outstanding = mrsas_atomic_read(&sc->fw_outstanding);
if (!outstanding) {
device_printf(sc->mrsas_dev, "NO IOs pending...\n");
mrsas_atomic_set(&sc->target_reset_outstanding, 0);
retCode = SUCCESS;
goto return_status;
} else if (sc->adprecovery != MRSAS_HBA_OPERATIONAL) {
device_printf(sc->mrsas_dev, "Controller is not operational\n");
goto return_status;
} else {
/* Some more error checks will be added in future */
}
/* Get an mpt frame and an index to fire the TM cmd */
tm_mpt_cmd = mrsas_get_mpt_cmd(sc);
if (!tm_mpt_cmd) {
retCode = FAIL;
goto return_status;
}
req_desc = mrsas_get_request_desc(sc, (tm_mpt_cmd->index) - 1);
if (!req_desc) {
device_printf(sc->mrsas_dev, "Cannot get request_descriptor for tm.\n");
retCode = FAIL;
goto release_mpt;
}
memset(req_desc, 0, sizeof(MRSAS_REQUEST_DESCRIPTOR_UNION));
req_desc->HighPriority.SMID = tm_mpt_cmd->index;
req_desc->HighPriority.RequestFlags =
(MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
req_desc->HighPriority.MSIxIndex = 0;
req_desc->HighPriority.LMID = 0;
req_desc->HighPriority.Reserved1 = 0;
tm_mpt_cmd->request_desc = req_desc;
mr_request = (MR_TASK_MANAGE_REQUEST *) tm_mpt_cmd->io_request;
memset(mr_request, 0, sizeof(MR_TASK_MANAGE_REQUEST));
tm_mpi_request = (MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
tm_mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
tm_mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
tm_mpi_request->TaskMID = 0; /* smid task */
tm_mpi_request->LUN[1] = 0;
/* Traverse the tm_mpt pool to get valid entries */
for (i = 0 ; i < MRSAS_MAX_TM_TARGETS; i++) {
if(!sc->target_reset_pool[i]) {
continue;
} else {
tgt_mpt_cmd = sc->target_reset_pool[i];
}
tgt_id = i;
/* See if the target is tm capable or NOT */
if (!tgt_mpt_cmd->tmCapable) {
device_printf(sc->mrsas_dev, "Task management NOT SUPPORTED for "
"CAM target:%d\n", tgt_id);
retCode = FAIL;
goto release_mpt;
}
tm_mpi_request->DevHandle = tgt_mpt_cmd->io_request->DevHandle;
if (i < (MRSAS_MAX_PD - 1)) {
mr_request->uTmReqReply.tmReqFlags.isTMForPD = 1;
bus_id = 0;
} else {
mr_request->uTmReqReply.tmReqFlags.isTMForLD = 1;
bus_id = 1;
}
device_printf(sc->mrsas_dev, "TM will be fired for "
"CAM target:%d and bus_id %d\n", tgt_id, bus_id);
sc->ocr_chan = (void *)&tm_mpt_cmd;
retCode = mrsas_issue_tm(sc, req_desc);
if (retCode == FAIL)
goto release_mpt;
#if TM_DEBUG
mpi_reply =
(MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->uTmReqReply.TMReply;
mrsas_tm_response_code(sc, mpi_reply);
#endif
mrsas_atomic_dec(&sc->target_reset_outstanding);
sc->target_reset_pool[i] = NULL;
/* Check for pending cmds in the mpt_cmd_pool with the tgt_id */
mrsas_disable_intr(sc);
/* Wait for 1 second to complete parallel ISR calling same
* mrsas_complete_cmd()
*/
msleep(&sc->ocr_chan, &sc->sim_lock, PRIBIO, "mrsas_reset_wakeup",
1 * hz);
count = sc->msix_vectors > 0 ? sc->msix_vectors : 1;
mtx_unlock(&sc->sim_lock);
for (MSIxIndex = 0; MSIxIndex < count; MSIxIndex++)
mrsas_complete_cmd(sc, MSIxIndex);
mtx_lock(&sc->sim_lock);
retCode = mrsas_track_scsiio(sc, tgt_id, bus_id);
mrsas_enable_intr(sc);
if (retCode == FAIL)
goto release_mpt;
}
device_printf(sc->mrsas_dev, "Number of targets outstanding "
"after reset: %d\n", mrsas_atomic_read(&sc->target_reset_outstanding));
release_mpt:
mrsas_release_mpt_cmd(tm_mpt_cmd);
return_status:
device_printf(sc->mrsas_dev, "target reset %s!!\n",
(retCode == SUCCESS) ? "SUCCESS" : "FAIL");
return retCode;
}
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