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freebsd-src/sys/dev/mps/mps_sas.c
Alexander Motin 8c4ee0b22c Use xpt_path_sbuf() in few drivers 
xpt_path_string() is now a wrapper around xpt_path_sbuf().  Using it
to than concatenate result to another sbuf makes no sense.  Just call
xpt_path_sbuf() directly.

MFC after:	1 month
2023-11-23 11:29:19 -05:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2009 Yahoo! Inc.
* Copyright (c) 2011-2015 LSI Corp.
* Copyright (c) 2013-2015 Avago Technologies
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* Avago Technologies (LSI) MPT-Fusion Host Adapter FreeBSD
*/
#include <sys/cdefs.h>
/* Communications core for Avago Technologies (LSI) MPT2 */
/* TODO Move headers to mpsvar */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/selinfo.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/bio.h>
#include <sys/malloc.h>
#include <sys/uio.h>
#include <sys/sysctl.h>
#include <sys/endian.h>
#include <sys/queue.h>
#include <sys/kthread.h>
#include <sys/taskqueue.h>
#include <sys/sbuf.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <machine/stdarg.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_xpt.h>
#include <cam/cam_debug.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_xpt_periph.h>
#include <cam/cam_periph.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
#include <cam/scsi/smp_all.h>
#include <dev/mps/mpi/mpi2_type.h>
#include <dev/mps/mpi/mpi2.h>
#include <dev/mps/mpi/mpi2_ioc.h>
#include <dev/mps/mpi/mpi2_sas.h>
#include <dev/mps/mpi/mpi2_cnfg.h>
#include <dev/mps/mpi/mpi2_init.h>
#include <dev/mps/mpi/mpi2_tool.h>
#include <dev/mps/mps_ioctl.h>
#include <dev/mps/mpsvar.h>
#include <dev/mps/mps_table.h>
#include <dev/mps/mps_sas.h>
/*
* static array to check SCSI OpCode for EEDP protection bits
*/
#define PRO_R MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP
#define PRO_W MPI2_SCSIIO_EEDPFLAGS_INSERT_OP
#define PRO_V MPI2_SCSIIO_EEDPFLAGS_INSERT_OP
static uint8_t op_code_prot[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, PRO_R, 0, PRO_W, 0, 0, 0, PRO_W, PRO_V,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, PRO_W, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, PRO_R, 0, PRO_W, 0, 0, 0, PRO_W, PRO_V,
0, 0, 0, PRO_W, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, PRO_R, 0, PRO_W, 0, 0, 0, PRO_W, PRO_V,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
MALLOC_DEFINE(M_MPSSAS, "MPSSAS", "MPS SAS memory");
static void mpssas_remove_device(struct mps_softc *, struct mps_command *);
static void mpssas_remove_complete(struct mps_softc *, struct mps_command *);
static void mpssas_action(struct cam_sim *sim, union ccb *ccb);
static void mpssas_poll(struct cam_sim *sim);
static int mpssas_send_abort(struct mps_softc *sc, struct mps_command *tm,
struct mps_command *cm);
static void mpssas_scsiio_timeout(void *data);
static void mpssas_abort_complete(struct mps_softc *sc, struct mps_command *cm);
static void mpssas_direct_drive_io(struct mpssas_softc *sassc,
struct mps_command *cm, union ccb *ccb);
static void mpssas_action_scsiio(struct mpssas_softc *, union ccb *);
static void mpssas_scsiio_complete(struct mps_softc *, struct mps_command *);
static void mpssas_action_resetdev(struct mpssas_softc *, union ccb *);
static void mpssas_smpio_complete(struct mps_softc *sc, struct mps_command *cm);
static void mpssas_send_smpcmd(struct mpssas_softc *sassc, union ccb *ccb,
uint64_t sasaddr);
static void mpssas_action_smpio(struct mpssas_softc *sassc, union ccb *ccb);
static void mpssas_resetdev_complete(struct mps_softc *, struct mps_command *);
static void mpssas_async(void *callback_arg, uint32_t code,
struct cam_path *path, void *arg);
static int mpssas_send_portenable(struct mps_softc *sc);
static void mpssas_portenable_complete(struct mps_softc *sc,
struct mps_command *cm);
struct mpssas_target *
mpssas_find_target_by_handle(struct mpssas_softc *sassc, int start, uint16_t handle)
{
struct mpssas_target *target;
int i;
for (i = start; i < sassc->maxtargets; i++) {
target = &sassc->targets[i];
if (target->handle == handle)
return (target);
}
return (NULL);
}
/* we need to freeze the simq during attach and diag reset, to avoid failing
* commands before device handles have been found by discovery. Since
* discovery involves reading config pages and possibly sending commands,
* discovery actions may continue even after we receive the end of discovery
* event, so refcount discovery actions instead of assuming we can unfreeze
* the simq when we get the event.
*/
void
mpssas_startup_increment(struct mpssas_softc *sassc)
{
MPS_FUNCTRACE(sassc->sc);
if ((sassc->flags & MPSSAS_IN_STARTUP) != 0) {
if (sassc->startup_refcount++ == 0) {
/* just starting, freeze the simq */
mps_dprint(sassc->sc, MPS_INIT,
"%s freezing simq\n", __func__);
xpt_hold_boot();
xpt_freeze_simq(sassc->sim, 1);
}
mps_dprint(sassc->sc, MPS_INIT, "%s refcount %u\n", __func__,
sassc->startup_refcount);
}
}
void
mpssas_release_simq_reinit(struct mpssas_softc *sassc)
{
if (sassc->flags & MPSSAS_QUEUE_FROZEN) {
sassc->flags &= ~MPSSAS_QUEUE_FROZEN;
xpt_release_simq(sassc->sim, 1);
mps_dprint(sassc->sc, MPS_INFO, "Unfreezing SIM queue\n");
}
}
void
mpssas_startup_decrement(struct mpssas_softc *sassc)
{
MPS_FUNCTRACE(sassc->sc);
if ((sassc->flags & MPSSAS_IN_STARTUP) != 0) {
if (--sassc->startup_refcount == 0) {
/* finished all discovery-related actions, release
* the simq and rescan for the latest topology.
*/
mps_dprint(sassc->sc, MPS_INIT,
"%s releasing simq\n", __func__);
sassc->flags &= ~MPSSAS_IN_STARTUP;
xpt_release_simq(sassc->sim, 1);
xpt_release_boot();
}
mps_dprint(sassc->sc, MPS_INIT, "%s refcount %u\n", __func__,
sassc->startup_refcount);
}
}
/*
* The firmware requires us to stop sending commands when we're doing task
* management.
* XXX The logic for serializing the device has been made lazy and moved to
* mpssas_prepare_for_tm().
*/
struct mps_command *
mpssas_alloc_tm(struct mps_softc *sc)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mps_command *tm;
tm = mps_alloc_high_priority_command(sc);
if (tm == NULL)
return (NULL);
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)tm->cm_req;
req->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
return tm;
}
void
mpssas_free_tm(struct mps_softc *sc, struct mps_command *tm)
{
if (tm == NULL)
return;
/*
* For TM's the devq is frozen for the device. Unfreeze it here and
* free the resources used for freezing the devq. Must clear the
* INRESET flag as well or scsi I/O will not work.
*/
if (tm->cm_ccb) {
mps_dprint(sc, MPS_XINFO | MPS_RECOVERY,
"Unfreezing devq for target ID %d\n",
tm->cm_targ->tid);
tm->cm_targ->flags &= ~MPSSAS_TARGET_INRESET;
xpt_release_devq(tm->cm_ccb->ccb_h.path, 1, TRUE);
xpt_free_path(tm->cm_ccb->ccb_h.path);
xpt_free_ccb(tm->cm_ccb);
}
mps_free_high_priority_command(sc, tm);
}
void
mpssas_rescan_target(struct mps_softc *sc, struct mpssas_target *targ)
{
struct mpssas_softc *sassc = sc->sassc;
path_id_t pathid;
target_id_t targetid;
union ccb *ccb;
MPS_FUNCTRACE(sc);
pathid = cam_sim_path(sassc->sim);
if (targ == NULL)
targetid = CAM_TARGET_WILDCARD;
else
targetid = targ - sassc->targets;
/*
* Allocate a CCB and schedule a rescan.
*/
ccb = xpt_alloc_ccb_nowait();
if (ccb == NULL) {
mps_dprint(sc, MPS_ERROR, "unable to alloc CCB for rescan\n");
return;
}
if (xpt_create_path(&ccb->ccb_h.path, NULL, pathid,
targetid, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
mps_dprint(sc, MPS_ERROR, "unable to create path for rescan\n");
xpt_free_ccb(ccb);
return;
}
if (targetid == CAM_TARGET_WILDCARD)
ccb->ccb_h.func_code = XPT_SCAN_BUS;
else
ccb->ccb_h.func_code = XPT_SCAN_TGT;
mps_dprint(sc, MPS_TRACE, "%s targetid %u\n", __func__, targetid);
xpt_rescan(ccb);
}
static void
mpssas_log_command(struct mps_command *cm, u_int level, const char *fmt, ...)
{
struct sbuf sb;
va_list ap;
char str[224];
if (cm == NULL)
return;
/* No need to be in here if debugging isn't enabled */
if ((cm->cm_sc->mps_debug & level) == 0)
return;
sbuf_new(&sb, str, sizeof(str), 0);
va_start(ap, fmt);
if (cm->cm_ccb != NULL) {
xpt_path_sbuf(cm->cm_ccb->csio.ccb_h.path, &sb);
if (cm->cm_ccb->ccb_h.func_code == XPT_SCSI_IO) {
scsi_command_string(&cm->cm_ccb->csio, &sb);
sbuf_printf(&sb, "length %d ",
cm->cm_ccb->csio.dxfer_len);
}
}
else {
sbuf_printf(&sb, "(noperiph:%s%d:%u:%u:%u): ",
cam_sim_name(cm->cm_sc->sassc->sim),
cam_sim_unit(cm->cm_sc->sassc->sim),
cam_sim_bus(cm->cm_sc->sassc->sim),
cm->cm_targ ? cm->cm_targ->tid : 0xFFFFFFFF,
cm->cm_lun);
}
sbuf_printf(&sb, "SMID %u ", cm->cm_desc.Default.SMID);
sbuf_vprintf(&sb, fmt, ap);
sbuf_finish(&sb);
mps_print_field(cm->cm_sc, "%s", sbuf_data(&sb));
va_end(ap);
}
static void
mpssas_remove_volume(struct mps_softc *sc, struct mps_command *tm)
{
MPI2_SCSI_TASK_MANAGE_REPLY *reply;
struct mpssas_target *targ;
uint16_t handle;
MPS_FUNCTRACE(sc);
reply = (MPI2_SCSI_TASK_MANAGE_REPLY *)tm->cm_reply;
handle = (uint16_t)(uintptr_t)tm->cm_complete_data;
targ = tm->cm_targ;
if (reply == NULL) {
/* XXX retry the remove after the diag reset completes? */
mps_dprint(sc, MPS_FAULT,
"%s NULL reply resetting device 0x%04x\n", __func__,
handle);
mpssas_free_tm(sc, tm);
return;
}
if ((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) !=
MPI2_IOCSTATUS_SUCCESS) {
mps_dprint(sc, MPS_ERROR,
"IOCStatus = 0x%x while resetting device 0x%x\n",
le16toh(reply->IOCStatus), handle);
}
mps_dprint(sc, MPS_XINFO,
"Reset aborted %u commands\n", reply->TerminationCount);
mps_free_reply(sc, tm->cm_reply_data);
tm->cm_reply = NULL; /* Ensures the reply won't get re-freed */
mps_dprint(sc, MPS_XINFO,
"clearing target %u handle 0x%04x\n", targ->tid, handle);
/*
* Don't clear target if remove fails because things will get confusing.
* Leave the devname and sasaddr intact so that we know to avoid reusing
* this target id if possible, and so we can assign the same target id
* to this device if it comes back in the future.
*/
if ((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) ==
MPI2_IOCSTATUS_SUCCESS) {
targ = tm->cm_targ;
targ->handle = 0x0;
targ->encl_handle = 0x0;
targ->encl_slot = 0x0;
targ->exp_dev_handle = 0x0;
targ->phy_num = 0x0;
targ->linkrate = 0x0;
targ->devinfo = 0x0;
targ->flags = 0x0;
}
mpssas_free_tm(sc, tm);
}
/*
* No Need to call "MPI2_SAS_OP_REMOVE_DEVICE" For Volume removal.
* Otherwise Volume Delete is same as Bare Drive Removal.
*/
void
mpssas_prepare_volume_remove(struct mpssas_softc *sassc, uint16_t handle)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mps_softc *sc;
struct mps_command *tm;
struct mpssas_target *targ = NULL;
MPS_FUNCTRACE(sassc->sc);
sc = sassc->sc;
#ifdef WD_SUPPORT
/*
* If this is a WD controller, determine if the disk should be exposed
* to the OS or not. If disk should be exposed, return from this
* function without doing anything.
*/
if (sc->WD_available && (sc->WD_hide_expose ==
MPS_WD_EXPOSE_ALWAYS)) {
return;
}
#endif //WD_SUPPORT
targ = mpssas_find_target_by_handle(sassc, 0, handle);
if (targ == NULL) {
/* FIXME: what is the action? */
/* We don't know about this device? */
mps_dprint(sc, MPS_ERROR,
"%s %d : invalid handle 0x%x \n", __func__,__LINE__, handle);
return;
}
targ->flags |= MPSSAS_TARGET_INREMOVAL;
tm = mpssas_alloc_tm(sc);
if (tm == NULL) {
mps_dprint(sc, MPS_ERROR,
"%s: command alloc failure\n", __func__);
return;
}
mpssas_rescan_target(sc, targ);
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)tm->cm_req;
req->DevHandle = targ->handle;
req->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
/* SAS Hard Link Reset / SATA Link Reset */
req->MsgFlags = MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET;
tm->cm_targ = targ;
tm->cm_data = NULL;
tm->cm_complete = mpssas_remove_volume;
tm->cm_complete_data = (void *)(uintptr_t)handle;
mps_dprint(sc, MPS_INFO, "%s: Sending reset for target ID %d\n",
__func__, targ->tid);
mpssas_prepare_for_tm(sc, tm, targ, CAM_LUN_WILDCARD);
mps_map_command(sc, tm);
}
/*
* The MPT2 firmware performs debounce on the link to avoid transient link
* errors and false removals. When it does decide that link has been lost
* and a device need to go away, it expects that the host will perform a
* target reset and then an op remove. The reset has the side-effect of
* aborting any outstanding requests for the device, which is required for
* the op-remove to succeed. It's not clear if the host should check for
* the device coming back alive after the reset.
*/
void
mpssas_prepare_remove(struct mpssas_softc *sassc, uint16_t handle)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mps_softc *sc;
struct mps_command *cm;
struct mpssas_target *targ = NULL;
MPS_FUNCTRACE(sassc->sc);
sc = sassc->sc;
targ = mpssas_find_target_by_handle(sassc, 0, handle);
if (targ == NULL) {
/* FIXME: what is the action? */
/* We don't know about this device? */
mps_dprint(sc, MPS_ERROR,
"%s : invalid handle 0x%x \n", __func__, handle);
return;
}
targ->flags |= MPSSAS_TARGET_INREMOVAL;
cm = mpssas_alloc_tm(sc);
if (cm == NULL) {
mps_dprint(sc, MPS_ERROR,
"%s: command alloc failure\n", __func__);
return;
}
mpssas_rescan_target(sc, targ);
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)cm->cm_req;
req->DevHandle = htole16(targ->handle);
req->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
/* SAS Hard Link Reset / SATA Link Reset */
req->MsgFlags = MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET;
cm->cm_targ = targ;
cm->cm_data = NULL;
cm->cm_complete = mpssas_remove_device;
cm->cm_complete_data = (void *)(uintptr_t)handle;
mps_dprint(sc, MPS_INFO, "%s: Sending reset for target ID %d\n",
__func__, targ->tid);
mpssas_prepare_for_tm(sc, cm, targ, CAM_LUN_WILDCARD);
mps_map_command(sc, cm);
}
static void
mpssas_remove_device(struct mps_softc *sc, struct mps_command *tm)
{
MPI2_SCSI_TASK_MANAGE_REPLY *reply;
MPI2_SAS_IOUNIT_CONTROL_REQUEST *req;
struct mpssas_target *targ;
uint16_t handle;
MPS_FUNCTRACE(sc);
reply = (MPI2_SCSI_TASK_MANAGE_REPLY *)tm->cm_reply;
handle = (uint16_t)(uintptr_t)tm->cm_complete_data;
targ = tm->cm_targ;
/*
* Currently there should be no way we can hit this case. It only
* happens when we have a failure to allocate chain frames, and
* task management commands don't have S/G lists.
*/
if ((tm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) {
mps_dprint(sc, MPS_ERROR,
"%s: cm_flags = %#x for remove of handle %#04x! "
"This should not happen!\n", __func__, tm->cm_flags,
handle);
}
if (reply == NULL) {
/* XXX retry the remove after the diag reset completes? */
mps_dprint(sc, MPS_FAULT,
"%s NULL reply resetting device 0x%04x\n", __func__,
handle);
mpssas_free_tm(sc, tm);
return;
}
if ((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) !=
MPI2_IOCSTATUS_SUCCESS) {
mps_dprint(sc, MPS_ERROR,
"IOCStatus = 0x%x while resetting device 0x%x\n",
le16toh(reply->IOCStatus), handle);
}
mps_dprint(sc, MPS_XINFO, "Reset aborted %u commands\n",
le32toh(reply->TerminationCount));
mps_free_reply(sc, tm->cm_reply_data);
tm->cm_reply = NULL; /* Ensures the reply won't get re-freed */
/* Reuse the existing command */
req = (MPI2_SAS_IOUNIT_CONTROL_REQUEST *)tm->cm_req;
memset(req, 0, sizeof(*req));
req->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
req->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
req->DevHandle = htole16(handle);
tm->cm_data = NULL;
tm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
tm->cm_complete = mpssas_remove_complete;
tm->cm_complete_data = (void *)(uintptr_t)handle;
/*
* Wait to send the REMOVE_DEVICE until all the commands have cleared.
* They should be aborted or time out and we'll kick thus off there
* if so.
*/
if (TAILQ_FIRST(&targ->commands) == NULL) {
mps_dprint(sc, MPS_INFO,
"No pending commands: starting remove_device target %u handle 0x%04x\n",
targ->tid, handle);
mps_map_command(sc, tm);
targ->pending_remove_tm = NULL;
} else {
targ->pending_remove_tm = tm;
}
mps_dprint(sc, MPS_XINFO, "clearing target %u handle 0x%04x\n",
targ->tid, handle);
}
static void
mpssas_remove_complete(struct mps_softc *sc, struct mps_command *tm)
{
MPI2_SAS_IOUNIT_CONTROL_REPLY *reply;
uint16_t handle;
struct mpssas_target *targ;
struct mpssas_lun *lun;
MPS_FUNCTRACE(sc);
reply = (MPI2_SAS_IOUNIT_CONTROL_REPLY *)tm->cm_reply;
handle = (uint16_t)(uintptr_t)tm->cm_complete_data;
targ = tm->cm_targ;
/*
* At this point, we should have no pending commands for the target.
* The remove target has just completed.
*/
KASSERT(TAILQ_FIRST(&targ->commands) == NULL,
("%s: no commands should be pending\n", __func__));
/*
* Currently there should be no way we can hit this case. It only
* happens when we have a failure to allocate chain frames, and
* task management commands don't have S/G lists.
*/
if ((tm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) {
mps_dprint(sc, MPS_XINFO,
"%s: cm_flags = %#x for remove of handle %#04x! "
"This should not happen!\n", __func__, tm->cm_flags,
handle);
mpssas_free_tm(sc, tm);
return;
}
if (reply == NULL) {
/* most likely a chip reset */
mps_dprint(sc, MPS_FAULT,
"%s NULL reply removing device 0x%04x\n", __func__, handle);
mpssas_free_tm(sc, tm);
return;
}
mps_dprint(sc, MPS_XINFO,
"%s on handle 0x%04x, IOCStatus= 0x%x\n", __func__,
handle, le16toh(reply->IOCStatus));
/*
* Don't clear target if remove fails because things will get confusing.
* Leave the devname and sasaddr intact so that we know to avoid reusing
* this target id if possible, and so we can assign the same target id
* to this device if it comes back in the future.
*/
if ((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) ==
MPI2_IOCSTATUS_SUCCESS) {
targ->handle = 0x0;
targ->encl_handle = 0x0;
targ->encl_slot = 0x0;
targ->exp_dev_handle = 0x0;
targ->phy_num = 0x0;
targ->linkrate = 0x0;
targ->devinfo = 0x0;
targ->flags = 0x0;
while(!SLIST_EMPTY(&targ->luns)) {
lun = SLIST_FIRST(&targ->luns);
SLIST_REMOVE_HEAD(&targ->luns, lun_link);
free(lun, M_MPT2);
}
}
mpssas_free_tm(sc, tm);
}
static int
mpssas_register_events(struct mps_softc *sc)
{
u32 events[MPI2_EVENT_NOTIFY_EVENTMASK_WORDS];
bzero(events, 16);
setbit(events, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
setbit(events, MPI2_EVENT_SAS_DISCOVERY);
setbit(events, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
setbit(events, MPI2_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE);
setbit(events, MPI2_EVENT_SAS_INIT_TABLE_OVERFLOW);
setbit(events, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
setbit(events, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
setbit(events, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
setbit(events, MPI2_EVENT_IR_VOLUME);
setbit(events, MPI2_EVENT_IR_PHYSICAL_DISK);
setbit(events, MPI2_EVENT_IR_OPERATION_STATUS);
setbit(events, MPI2_EVENT_LOG_ENTRY_ADDED);
mps_register_events(sc, events, mpssas_evt_handler, NULL,
&sc->sassc->mpssas_eh);
return (0);
}
int
mps_attach_sas(struct mps_softc *sc)
{
struct mpssas_softc *sassc;
cam_status status;
int unit, error = 0, reqs;
MPS_FUNCTRACE(sc);
mps_dprint(sc, MPS_INIT, "%s entered\n", __func__);
sassc = malloc(sizeof(struct mpssas_softc), M_MPT2, M_WAITOK|M_ZERO);
/*
* XXX MaxTargets could change during a reinit. Since we don't
* resize the targets[] array during such an event, cache the value
* of MaxTargets here so that we don't get into trouble later. This
* should move into the reinit logic.
*/
sassc->maxtargets = sc->facts->MaxTargets + sc->facts->MaxVolumes;
sassc->targets = malloc(sizeof(struct mpssas_target) *
sassc->maxtargets, M_MPT2, M_WAITOK|M_ZERO);
sc->sassc = sassc;
sassc->sc = sc;
reqs = sc->num_reqs - sc->num_prireqs - 1;
if ((sassc->devq = cam_simq_alloc(reqs)) == NULL) {
mps_dprint(sc, MPS_ERROR, "Cannot allocate SIMQ\n");
error = ENOMEM;
goto out;
}
unit = device_get_unit(sc->mps_dev);
sassc->sim = cam_sim_alloc(mpssas_action, mpssas_poll, "mps", sassc,
unit, &sc->mps_mtx, reqs, reqs, sassc->devq);
if (sassc->sim == NULL) {
mps_dprint(sc, MPS_INIT|MPS_ERROR, "Cannot allocate SIM\n");
error = EINVAL;
goto out;
}
TAILQ_INIT(&sassc->ev_queue);
/* Initialize taskqueue for Event Handling */
TASK_INIT(&sassc->ev_task, 0, mpssas_firmware_event_work, sc);
sassc->ev_tq = taskqueue_create("mps_taskq", M_NOWAIT | M_ZERO,
taskqueue_thread_enqueue, &sassc->ev_tq);
taskqueue_start_threads(&sassc->ev_tq, 1, PRIBIO, "%s taskq",
device_get_nameunit(sc->mps_dev));
mps_lock(sc);
/*
* XXX There should be a bus for every port on the adapter, but since
* we're just going to fake the topology for now, we'll pretend that
* everything is just a target on a single bus.
*/
if ((error = xpt_bus_register(sassc->sim, sc->mps_dev, 0)) != 0) {
mps_dprint(sc, MPS_INIT|MPS_ERROR,
"Error %d registering SCSI bus\n", error);
mps_unlock(sc);
goto out;
}
/*
* Assume that discovery events will start right away.
*
* Hold off boot until discovery is complete.
*/
sassc->flags |= MPSSAS_IN_STARTUP | MPSSAS_IN_DISCOVERY;
sc->sassc->startup_refcount = 0;
mpssas_startup_increment(sassc);
mps_unlock(sc);
/*
* Register for async events so we can determine the EEDP
* capabilities of devices.
*/
status = xpt_create_path(&sassc->path, /*periph*/NULL,
cam_sim_path(sc->sassc->sim), CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD);
if (status != CAM_REQ_CMP) {
mps_dprint(sc, MPS_ERROR|MPS_INIT,
"Error %#x creating sim path\n", status);
sassc->path = NULL;
} else {
int event;
event = AC_ADVINFO_CHANGED;
status = xpt_register_async(event, mpssas_async, sc,
sassc->path);
if (status != CAM_REQ_CMP) {
mps_dprint(sc, MPS_ERROR,
"Error %#x registering async handler for "
"AC_ADVINFO_CHANGED events\n", status);
xpt_free_path(sassc->path);
sassc->path = NULL;
}
}
if (status != CAM_REQ_CMP) {
/*
* EEDP use is the exception, not the rule.
* Warn the user, but do not fail to attach.
*/
mps_printf(sc, "EEDP capabilities disabled.\n");
}
mpssas_register_events(sc);
out:
if (error)
mps_detach_sas(sc);
mps_dprint(sc, MPS_INIT, "%s exit error= %d\n", __func__, error);
return (error);
}
int
mps_detach_sas(struct mps_softc *sc)
{
struct mpssas_softc *sassc;
struct mpssas_lun *lun, *lun_tmp;
struct mpssas_target *targ;
int i;
MPS_FUNCTRACE(sc);
if (sc->sassc == NULL)
return (0);
sassc = sc->sassc;
mps_deregister_events(sc, sassc->mpssas_eh);
/*
* Drain and free the event handling taskqueue with the lock
* unheld so that any parallel processing tasks drain properly
* without deadlocking.
*/
if (sassc->ev_tq != NULL)
taskqueue_free(sassc->ev_tq);
/* Deregister our async handler */
if (sassc->path != NULL) {
xpt_register_async(0, mpssas_async, sc, sassc->path);
xpt_free_path(sassc->path);
sassc->path = NULL;
}
/* Make sure CAM doesn't wedge if we had to bail out early. */
mps_lock(sc);
while (sassc->startup_refcount != 0)
mpssas_startup_decrement(sassc);
if (sassc->flags & MPSSAS_IN_STARTUP)
xpt_release_simq(sassc->sim, 1);
if (sassc->sim != NULL) {
xpt_bus_deregister(cam_sim_path(sassc->sim));
cam_sim_free(sassc->sim, FALSE);
}
mps_unlock(sc);
if (sassc->devq != NULL)
cam_simq_free(sassc->devq);
for(i=0; i< sassc->maxtargets ;i++) {
targ = &sassc->targets[i];
SLIST_FOREACH_SAFE(lun, &targ->luns, lun_link, lun_tmp) {
free(lun, M_MPT2);
}
}
free(sassc->targets, M_MPT2);
free(sassc, M_MPT2);
sc->sassc = NULL;
return (0);
}
void
mpssas_discovery_end(struct mpssas_softc *sassc)
{
struct mps_softc *sc = sassc->sc;
MPS_FUNCTRACE(sc);
/*
* After discovery has completed, check the mapping table for any
* missing devices and update their missing counts. Only do this once
* whenever the driver is initialized so that missing counts aren't
* updated unnecessarily. Note that just because discovery has
* completed doesn't mean that events have been processed yet. The
* check_devices function is a callout timer that checks if ALL devices
* are missing. If so, it will wait a little longer for events to
* complete and keep resetting itself until some device in the mapping
* table is not missing, meaning that event processing has started.
*/
if (sc->track_mapping_events) {
mps_dprint(sc, MPS_XINFO | MPS_MAPPING, "Discovery has "
"completed. Check for missing devices in the mapping "
"table.\n");
callout_reset(&sc->device_check_callout,
MPS_MISSING_CHECK_DELAY * hz, mps_mapping_check_devices,
sc);
}
}
static void
mpssas_action(struct cam_sim *sim, union ccb *ccb)
{
struct mpssas_softc *sassc;
sassc = cam_sim_softc(sim);
MPS_FUNCTRACE(sassc->sc);
mps_dprint(sassc->sc, MPS_TRACE, "ccb func_code 0x%x\n",
ccb->ccb_h.func_code);
mtx_assert(&sassc->sc->mps_mtx, MA_OWNED);
switch (ccb->ccb_h.func_code) {
case XPT_PATH_INQ:
{
struct ccb_pathinq *cpi = &ccb->cpi;
struct mps_softc *sc = sassc->sc;
cpi->version_num = 1;
cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
cpi->target_sprt = 0;
cpi->hba_misc = PIM_NOBUSRESET | PIM_UNMAPPED | PIM_NOSCAN;
cpi->hba_eng_cnt = 0;
cpi->max_target = sassc->maxtargets - 1;
cpi->max_lun = 255;
/*
* initiator_id is set here to an ID outside the set of valid
* target IDs (including volumes).
*/
cpi->initiator_id = sassc->maxtargets;
strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strlcpy(cpi->hba_vid, "Avago Tech", HBA_IDLEN);
strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
cpi->unit_number = cam_sim_unit(sim);
cpi->bus_id = cam_sim_bus(sim);
cpi->base_transfer_speed = 150000;
cpi->transport = XPORT_SAS;
cpi->transport_version = 0;
cpi->protocol = PROTO_SCSI;
cpi->protocol_version = SCSI_REV_SPC;
cpi->maxio = sc->maxio;
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP);
break;
}
case XPT_GET_TRAN_SETTINGS:
{
struct ccb_trans_settings *cts;
struct ccb_trans_settings_sas *sas;
struct ccb_trans_settings_scsi *scsi;
struct mpssas_target *targ;
cts = &ccb->cts;
sas = &cts->xport_specific.sas;
scsi = &cts->proto_specific.scsi;
KASSERT(cts->ccb_h.target_id < sassc->maxtargets,
("Target %d out of bounds in XPT_GET_TRANS_SETTINGS\n",
cts->ccb_h.target_id));
targ = &sassc->targets[cts->ccb_h.target_id];
if (targ->handle == 0x0) {
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
break;
}
cts->protocol_version = SCSI_REV_SPC2;
cts->transport = XPORT_SAS;
cts->transport_version = 0;
sas->valid = CTS_SAS_VALID_SPEED;
switch (targ->linkrate) {
case 0x08:
sas->bitrate = 150000;
break;
case 0x09:
sas->bitrate = 300000;
break;
case 0x0a:
sas->bitrate = 600000;
break;
default:
sas->valid = 0;
}
cts->protocol = PROTO_SCSI;
scsi->valid = CTS_SCSI_VALID_TQ;
scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP);
break;
}
case XPT_CALC_GEOMETRY:
cam_calc_geometry(&ccb->ccg, /*extended*/1);
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP);
break;
case XPT_RESET_DEV:
mps_dprint(sassc->sc, MPS_XINFO, "mpssas_action XPT_RESET_DEV\n");
mpssas_action_resetdev(sassc, ccb);
return;
case XPT_RESET_BUS:
case XPT_ABORT:
case XPT_TERM_IO:
mps_dprint(sassc->sc, MPS_XINFO,
"mpssas_action faking success for abort or reset\n");
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP);
break;
case XPT_SCSI_IO:
mpssas_action_scsiio(sassc, ccb);
return;
case XPT_SMP_IO:
mpssas_action_smpio(sassc, ccb);
return;
default:
mpssas_set_ccbstatus(ccb, CAM_FUNC_NOTAVAIL);
break;
}
xpt_done(ccb);
}
static void
mpssas_announce_reset(struct mps_softc *sc, uint32_t ac_code,
target_id_t target_id, lun_id_t lun_id)
{
path_id_t path_id = cam_sim_path(sc->sassc->sim);
struct cam_path *path;
mps_dprint(sc, MPS_XINFO, "%s code %x target %d lun %jx\n", __func__,
ac_code, target_id, (uintmax_t)lun_id);
if (xpt_create_path(&path, NULL,
path_id, target_id, lun_id) != CAM_REQ_CMP) {
mps_dprint(sc, MPS_ERROR, "unable to create path for reset "
"notification\n");
return;
}
xpt_async(ac_code, path, NULL);
xpt_free_path(path);
}
static void
mpssas_complete_all_commands(struct mps_softc *sc)
{
struct mps_command *cm;
int i;
int completed;
MPS_FUNCTRACE(sc);
mtx_assert(&sc->mps_mtx, MA_OWNED);
/* complete all commands with a NULL reply */
for (i = 1; i < sc->num_reqs; i++) {
cm = &sc->commands[i];
if (cm->cm_state == MPS_CM_STATE_FREE)
continue;
cm->cm_state = MPS_CM_STATE_BUSY;
cm->cm_reply = NULL;
completed = 0;
if (cm->cm_flags & MPS_CM_FLAGS_SATA_ID_TIMEOUT) {
MPASS(cm->cm_data);
free(cm->cm_data, M_MPT2);
cm->cm_data = NULL;
}
if (cm->cm_flags & MPS_CM_FLAGS_POLLED)
cm->cm_flags |= MPS_CM_FLAGS_COMPLETE;
if (cm->cm_complete != NULL) {
mpssas_log_command(cm, MPS_RECOVERY,
"completing cm %p state %x ccb %p for diag reset\n",
cm, cm->cm_state, cm->cm_ccb);
cm->cm_complete(sc, cm);
completed = 1;
} else if (cm->cm_flags & MPS_CM_FLAGS_WAKEUP) {
mpssas_log_command(cm, MPS_RECOVERY,
"waking up cm %p state %x ccb %p for diag reset\n",
cm, cm->cm_state, cm->cm_ccb);
wakeup(cm);
completed = 1;
}
if ((completed == 0) && (cm->cm_state != MPS_CM_STATE_FREE)) {
/* this should never happen, but if it does, log */
mpssas_log_command(cm, MPS_RECOVERY,
"cm %p state %x flags 0x%x ccb %p during diag "
"reset\n", cm, cm->cm_state, cm->cm_flags,
cm->cm_ccb);
}
}
sc->io_cmds_active = 0;
}
void
mpssas_handle_reinit(struct mps_softc *sc)
{
int i;
/* Go back into startup mode and freeze the simq, so that CAM
* doesn't send any commands until after we've rediscovered all
* targets and found the proper device handles for them.
*
* After the reset, portenable will trigger discovery, and after all
* discovery-related activities have finished, the simq will be
* released.
*/
mps_dprint(sc, MPS_INIT, "%s startup\n", __func__);
sc->sassc->flags |= MPSSAS_IN_STARTUP;
sc->sassc->flags |= MPSSAS_IN_DISCOVERY;
mpssas_startup_increment(sc->sassc);
/* notify CAM of a bus reset */
mpssas_announce_reset(sc, AC_BUS_RESET, CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD);
/* complete and cleanup after all outstanding commands */
mpssas_complete_all_commands(sc);
mps_dprint(sc, MPS_INIT,
"%s startup %u after command completion\n", __func__,
sc->sassc->startup_refcount);
/* zero all the target handles, since they may change after the
* reset, and we have to rediscover all the targets and use the new
* handles.
*/
for (i = 0; i < sc->sassc->maxtargets; i++) {
if (sc->sassc->targets[i].outstanding != 0)
mps_dprint(sc, MPS_INIT, "target %u outstanding %u\n",
i, sc->sassc->targets[i].outstanding);
sc->sassc->targets[i].handle = 0x0;
sc->sassc->targets[i].exp_dev_handle = 0x0;
sc->sassc->targets[i].outstanding = 0;
sc->sassc->targets[i].flags = MPSSAS_TARGET_INDIAGRESET;
}
}
static void
mpssas_tm_timeout(void *data)
{
struct mps_command *tm = data;
struct mps_softc *sc = tm->cm_sc;
mtx_assert(&sc->mps_mtx, MA_OWNED);
mpssas_log_command(tm, MPS_INFO|MPS_RECOVERY,
"task mgmt %p timed out\n", tm);
KASSERT(tm->cm_state == MPS_CM_STATE_INQUEUE,
("command not inqueue, state = %u\n", tm->cm_state));
tm->cm_state = MPS_CM_STATE_BUSY;
mps_reinit(sc);
}
static void
mpssas_logical_unit_reset_complete(struct mps_softc *sc, struct mps_command *tm)
{
MPI2_SCSI_TASK_MANAGE_REPLY *reply;
unsigned int cm_count = 0;
struct mps_command *cm;
struct mpssas_target *targ;
callout_stop(&tm->cm_callout);
reply = (MPI2_SCSI_TASK_MANAGE_REPLY *)tm->cm_reply;
targ = tm->cm_targ;
/*
* Currently there should be no way we can hit this case. It only
* happens when we have a failure to allocate chain frames, and
* task management commands don't have S/G lists.
* XXXSL So should it be an assertion?
*/
if ((tm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) {
mps_dprint(sc, MPS_RECOVERY|MPS_ERROR,
"%s: cm_flags = %#x for LUN reset! "
"This should not happen!\n", __func__, tm->cm_flags);
mpssas_free_tm(sc, tm);
return;
}
if (reply == NULL) {
mps_dprint(sc, MPS_RECOVERY, "NULL reset reply for tm %p\n",
tm);
if ((sc->mps_flags & MPS_FLAGS_DIAGRESET) != 0) {
/* this completion was due to a reset, just cleanup */
mps_dprint(sc, MPS_RECOVERY, "Hardware undergoing "
"reset, ignoring NULL LUN reset reply\n");
targ->tm = NULL;
mpssas_free_tm(sc, tm);
}
else {
/* we should have gotten a reply. */
mps_dprint(sc, MPS_INFO|MPS_RECOVERY, "NULL reply on "
"LUN reset attempt, resetting controller\n");
mps_reinit(sc);
}
return;
}
mps_dprint(sc, MPS_RECOVERY,
"logical unit reset status 0x%x code 0x%x count %u\n",
le16toh(reply->IOCStatus), le32toh(reply->ResponseCode),
le32toh(reply->TerminationCount));
/*
* See if there are any outstanding commands for this LUN.
* This could be made more efficient by using a per-LU data
* structure of some sort.
*/
TAILQ_FOREACH(cm, &targ->commands, cm_link) {
if (cm->cm_lun == tm->cm_lun)
cm_count++;
}
if (cm_count == 0) {
mps_dprint(sc, MPS_RECOVERY|MPS_INFO,
"Finished recovery after LUN reset for target %u\n",
targ->tid);
mpssas_announce_reset(sc, AC_SENT_BDR, targ->tid, tm->cm_lun);
/*
* We've finished recovery for this logical unit. check and
* see if some other logical unit has a timedout command
* that needs to be processed.
*/
cm = TAILQ_FIRST(&targ->timedout_commands);
if (cm) {
mps_dprint(sc, MPS_INFO|MPS_RECOVERY,
"More commands to abort for target %u\n",
targ->tid);
mpssas_send_abort(sc, tm, cm);
} else {
targ->tm = NULL;
mpssas_free_tm(sc, tm);
}
} else {
/*
* If we still have commands for this LUN, the reset
* effectively failed, regardless of the status reported.
* Escalate to a target reset.
*/
mps_dprint(sc, MPS_INFO|MPS_RECOVERY,
"logical unit reset complete for target %u, but still "
"have %u command(s), sending target reset\n", targ->tid,
cm_count);
mpssas_send_reset(sc, tm,
MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET);
}
}
static void
mpssas_target_reset_complete(struct mps_softc *sc, struct mps_command *tm)
{
MPI2_SCSI_TASK_MANAGE_REPLY *reply;
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mpssas_target *targ;
callout_stop(&tm->cm_callout);
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)tm->cm_req;
reply = (MPI2_SCSI_TASK_MANAGE_REPLY *)tm->cm_reply;
targ = tm->cm_targ;
/*
* Currently there should be no way we can hit this case. It only
* happens when we have a failure to allocate chain frames, and
* task management commands don't have S/G lists.
*/
if ((tm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) {
mps_dprint(sc, MPS_ERROR,"%s: cm_flags = %#x for target reset! "
"This should not happen!\n", __func__, tm->cm_flags);
mpssas_free_tm(sc, tm);
return;
}
if (reply == NULL) {
mps_dprint(sc, MPS_RECOVERY,
"NULL target reset reply for tm %pi TaskMID %u\n",
tm, le16toh(req->TaskMID));
if ((sc->mps_flags & MPS_FLAGS_DIAGRESET) != 0) {
/* this completion was due to a reset, just cleanup */
mps_dprint(sc, MPS_RECOVERY, "Hardware undergoing "
"reset, ignoring NULL target reset reply\n");
targ->tm = NULL;
mpssas_free_tm(sc, tm);
} else {
/* we should have gotten a reply. */
mps_dprint(sc, MPS_INFO|MPS_RECOVERY, "NULL reply on "
"target reset attempt, resetting controller\n");
mps_reinit(sc);
}
return;
}
mps_dprint(sc, MPS_RECOVERY,
"target reset status 0x%x code 0x%x count %u\n",
le16toh(reply->IOCStatus), le32toh(reply->ResponseCode),
le32toh(reply->TerminationCount));
if (targ->outstanding == 0) {
/* we've finished recovery for this target and all
* of its logical units.
*/
mps_dprint(sc, MPS_RECOVERY|MPS_INFO,
"Finished reset recovery for target %u\n", targ->tid);
mpssas_announce_reset(sc, AC_SENT_BDR, tm->cm_targ->tid,
CAM_LUN_WILDCARD);
targ->tm = NULL;
mpssas_free_tm(sc, tm);
} else {
/*
* After a target reset, if this target still has
* outstanding commands, the reset effectively failed,
* regardless of the status reported. escalate.
*/
mps_dprint(sc, MPS_INFO|MPS_RECOVERY,
"Target reset complete for target %u, but still have %u "
"command(s), resetting controller\n", targ->tid,
targ->outstanding);
mps_reinit(sc);
}
}
#define MPS_RESET_TIMEOUT 30
int
mpssas_send_reset(struct mps_softc *sc, struct mps_command *tm, uint8_t type)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mpssas_target *target;
int err;
target = tm->cm_targ;
if (target->handle == 0) {
mps_dprint(sc, MPS_ERROR,"%s null devhandle for target_id %d\n",
__func__, target->tid);
return -1;
}
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)tm->cm_req;
req->DevHandle = htole16(target->handle);
req->TaskType = type;
if (type == MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET) {
/* XXX Need to handle invalid LUNs */
MPS_SET_LUN(req->LUN, tm->cm_lun);
tm->cm_targ->logical_unit_resets++;
mps_dprint(sc, MPS_RECOVERY|MPS_INFO,
"Sending logical unit reset to target %u lun %d\n",
target->tid, tm->cm_lun);
tm->cm_complete = mpssas_logical_unit_reset_complete;
mpssas_prepare_for_tm(sc, tm, target, tm->cm_lun);
} else if (type == MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET) {
/*
* Target reset method =
* SAS Hard Link Reset / SATA Link Reset
*/
req->MsgFlags = MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET;
tm->cm_targ->target_resets++;
mps_dprint(sc, MPS_RECOVERY|MPS_INFO,
"Sending target reset to target %u\n", target->tid);
tm->cm_complete = mpssas_target_reset_complete;
mpssas_prepare_for_tm(sc, tm, target, CAM_LUN_WILDCARD);
} else {
mps_dprint(sc, MPS_ERROR, "unexpected reset type 0x%x\n", type);
return -1;
}
tm->cm_data = NULL;
tm->cm_complete_data = (void *)tm;
callout_reset(&tm->cm_callout, MPS_RESET_TIMEOUT * hz,
mpssas_tm_timeout, tm);
err = mps_map_command(sc, tm);
if (err)
mps_dprint(sc, MPS_ERROR|MPS_RECOVERY,
"error %d sending reset type %u\n",
err, type);
return err;
}
static void
mpssas_abort_complete(struct mps_softc *sc, struct mps_command *tm)
{
struct mps_command *cm;
MPI2_SCSI_TASK_MANAGE_REPLY *reply;
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mpssas_target *targ;
callout_stop(&tm->cm_callout);
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)tm->cm_req;
reply = (MPI2_SCSI_TASK_MANAGE_REPLY *)tm->cm_reply;
targ = tm->cm_targ;
/*
* Currently there should be no way we can hit this case. It only
* happens when we have a failure to allocate chain frames, and
* task management commands don't have S/G lists.
*/
if ((tm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) {
mps_dprint(sc, MPS_RECOVERY,
"cm_flags = %#x for abort %p TaskMID %u!\n",
tm->cm_flags, tm, le16toh(req->TaskMID));
mpssas_free_tm(sc, tm);
return;
}
if (reply == NULL) {
mps_dprint(sc, MPS_RECOVERY,
"NULL abort reply for tm %p TaskMID %u\n",
tm, le16toh(req->TaskMID));
if ((sc->mps_flags & MPS_FLAGS_DIAGRESET) != 0) {
/* this completion was due to a reset, just cleanup */
mps_dprint(sc, MPS_RECOVERY, "Hardware undergoing "
"reset, ignoring NULL abort reply\n");
targ->tm = NULL;
mpssas_free_tm(sc, tm);
} else {
/* we should have gotten a reply. */
mps_dprint(sc, MPS_INFO|MPS_RECOVERY, "NULL reply on "
"abort attempt, resetting controller\n");
mps_reinit(sc);
}
return;
}
mps_dprint(sc, MPS_RECOVERY,
"abort TaskMID %u status 0x%x code 0x%x count %u\n",
le16toh(req->TaskMID),
le16toh(reply->IOCStatus), le32toh(reply->ResponseCode),
le32toh(reply->TerminationCount));
cm = TAILQ_FIRST(&tm->cm_targ->timedout_commands);
if (cm == NULL) {
/*
* If there are no more timedout commands, we're done with
* error recovery for this target.
*/
mps_dprint(sc, MPS_INFO|MPS_RECOVERY,
"Finished abort recovery for target %u\n", targ->tid);
targ->tm = NULL;
mpssas_free_tm(sc, tm);
} else if (le16toh(req->TaskMID) != cm->cm_desc.Default.SMID) {
/* abort success, but we have more timedout commands to abort */
mps_dprint(sc, MPS_INFO|MPS_RECOVERY,
"Continuing abort recovery for target %u\n", targ->tid);
mpssas_send_abort(sc, tm, cm);
} else {
/* we didn't get a command completion, so the abort
* failed as far as we're concerned. escalate.
*/
mps_dprint(sc, MPS_RECOVERY,
"Abort failed for target %u, sending logical unit reset\n",
targ->tid);
mpssas_send_reset(sc, tm,
MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET);
}
}
#define MPS_ABORT_TIMEOUT 5
static int
mpssas_send_abort(struct mps_softc *sc, struct mps_command *tm, struct mps_command *cm)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mpssas_target *targ;
int err;
targ = cm->cm_targ;
if (targ->handle == 0) {
mps_dprint(sc, MPS_ERROR|MPS_RECOVERY,
"%s null devhandle for target_id %d\n",
__func__, cm->cm_ccb->ccb_h.target_id);
return -1;
}
mpssas_log_command(cm, MPS_RECOVERY|MPS_INFO,
"Aborting command %p\n", cm);
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)tm->cm_req;
req->DevHandle = htole16(targ->handle);
req->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK;
/* XXX Need to handle invalid LUNs */
MPS_SET_LUN(req->LUN, cm->cm_ccb->ccb_h.target_lun);
req->TaskMID = htole16(cm->cm_desc.Default.SMID);
tm->cm_data = NULL;
tm->cm_complete = mpssas_abort_complete;
tm->cm_complete_data = (void *)tm;
tm->cm_targ = cm->cm_targ;
tm->cm_lun = cm->cm_lun;
callout_reset(&tm->cm_callout, MPS_ABORT_TIMEOUT * hz,
mpssas_tm_timeout, tm);
targ->aborts++;
mpssas_prepare_for_tm(sc, tm, targ, tm->cm_lun);
err = mps_map_command(sc, tm);
if (err)
mps_dprint(sc, MPS_ERROR|MPS_RECOVERY,
"error %d sending abort for cm %p SMID %u\n",
err, cm, req->TaskMID);
return err;
}
static void
mpssas_scsiio_timeout(void *data)
{
sbintime_t elapsed, now;
union ccb *ccb;
struct mps_softc *sc;
struct mps_command *cm;
struct mpssas_target *targ;
cm = (struct mps_command *)data;
sc = cm->cm_sc;
ccb = cm->cm_ccb;
now = sbinuptime();
MPS_FUNCTRACE(sc);
mtx_assert(&sc->mps_mtx, MA_OWNED);
mps_dprint(sc, MPS_XINFO|MPS_RECOVERY, "Timeout checking cm %p\n", cm);
/*
* Run the interrupt handler to make sure it's not pending. This
* isn't perfect because the command could have already completed
* and been re-used, though this is unlikely.
*/
mps_intr_locked(sc);
if (cm->cm_flags & MPS_CM_FLAGS_ON_RECOVERY) {
mpssas_log_command(cm, MPS_XINFO,
"SCSI command %p almost timed out\n", cm);
return;
}
if (cm->cm_ccb == NULL) {
mps_dprint(sc, MPS_ERROR, "command timeout with NULL ccb\n");
return;
}
targ = cm->cm_targ;
targ->timeouts++;
elapsed = now - ccb->ccb_h.qos.sim_data;
mpssas_log_command(cm, MPS_INFO|MPS_RECOVERY,
"Command timeout on target %u(0x%04x) %d set, %d.%d elapsed\n",
targ->tid, targ->handle, ccb->ccb_h.timeout,
sbintime_getsec(elapsed), elapsed & 0xffffffff);
/* XXX first, check the firmware state, to see if it's still
* operational. if not, do a diag reset.
*/
mpssas_set_ccbstatus(cm->cm_ccb, CAM_CMD_TIMEOUT);
cm->cm_flags |= MPS_CM_FLAGS_ON_RECOVERY | MPS_CM_FLAGS_TIMEDOUT;
TAILQ_INSERT_TAIL(&targ->timedout_commands, cm, cm_recovery);
if (targ->tm != NULL) {
/* target already in recovery, just queue up another
* timedout command to be processed later.
*/
mps_dprint(sc, MPS_RECOVERY,
"queued timedout cm %p for processing by tm %p\n",
cm, targ->tm);
} else if ((targ->tm = mpssas_alloc_tm(sc)) != NULL) {
mps_dprint(sc, MPS_RECOVERY|MPS_INFO,
"Sending abort to target %u for SMID %d\n", targ->tid,
cm->cm_desc.Default.SMID);
mps_dprint(sc, MPS_RECOVERY, "timedout cm %p allocated tm %p\n",
cm, targ->tm);
/* start recovery by aborting the first timedout command */
mpssas_send_abort(sc, targ->tm, cm);
} else {
/* XXX queue this target up for recovery once a TM becomes
* available. The firmware only has a limited number of
* HighPriority credits for the high priority requests used
* for task management, and we ran out.
*
* Isilon: don't worry about this for now, since we have
* more credits than disks in an enclosure, and limit
* ourselves to one TM per target for recovery.
*/
mps_dprint(sc, MPS_ERROR|MPS_RECOVERY,
"timedout cm %p failed to allocate a tm\n", cm);
}
}
static void
mpssas_action_scsiio(struct mpssas_softc *sassc, union ccb *ccb)
{
MPI2_SCSI_IO_REQUEST *req;
struct ccb_scsiio *csio;
struct mps_softc *sc;
struct mpssas_target *targ;
struct mpssas_lun *lun;
struct mps_command *cm;
uint8_t i, lba_byte, *ref_tag_addr;
uint16_t eedp_flags;
uint32_t mpi_control;
sc = sassc->sc;
MPS_FUNCTRACE(sc);
mtx_assert(&sc->mps_mtx, MA_OWNED);
csio = &ccb->csio;
KASSERT(csio->ccb_h.target_id < sassc->maxtargets,
("Target %d out of bounds in XPT_SCSI_IO\n",
csio->ccb_h.target_id));
targ = &sassc->targets[csio->ccb_h.target_id];
mps_dprint(sc, MPS_TRACE, "ccb %p target flag %x\n", ccb, targ->flags);
if (targ->handle == 0x0) {
if (targ->flags & MPSSAS_TARGET_INDIAGRESET) {
mps_dprint(sc, MPS_ERROR,
"%s NULL handle for target %u in diag reset freezing queue\n",
__func__, csio->ccb_h.target_id);
ccb->ccb_h.status = CAM_REQUEUE_REQ | CAM_DEV_QFRZN;
xpt_freeze_devq(ccb->ccb_h.path, 1);
xpt_done(ccb);
return;
}
mps_dprint(sc, MPS_ERROR, "%s NULL handle for target %u\n",
__func__, csio->ccb_h.target_id);
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
xpt_done(ccb);
return;
}
if (targ->flags & MPS_TARGET_FLAGS_RAID_COMPONENT) {
mps_dprint(sc, MPS_ERROR, "%s Raid component no SCSI IO "
"supported %u\n", __func__, csio->ccb_h.target_id);
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
xpt_done(ccb);
return;
}
/*
* Sometimes, it is possible to get a command that is not "In
* Progress" and was actually aborted by the upper layer. Check for
* this here and complete the command without error.
*/
if (mpssas_get_ccbstatus(ccb) != CAM_REQ_INPROG) {
mps_dprint(sc, MPS_TRACE, "%s Command is not in progress for "
"target %u\n", __func__, csio->ccb_h.target_id);
xpt_done(ccb);
return;
}
/*
* If devinfo is 0 this will be a volume. In that case don't tell CAM
* that the volume has timed out. We want volumes to be enumerated
* until they are deleted/removed, not just failed. In either event,
* we're removing the target due to a firmware event telling us
* the device is now gone (as opposed to some transient event). Since
* we're opting to remove failed devices from the OS's view, we need
* to propagate that status up the stack.
*/
if (targ->flags & MPSSAS_TARGET_INREMOVAL) {
if (targ->devinfo == 0)
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP);
else
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
xpt_done(ccb);
return;
}
if ((sc->mps_flags & MPS_FLAGS_SHUTDOWN) != 0) {
mps_dprint(sc, MPS_INFO, "%s shutting down\n", __func__);
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
xpt_done(ccb);
return;
}
/*
* If target has a reset in progress, the devq should be frozen.
* Geting here we likely hit a race, so just requeue.
*/
if (targ->flags & MPSSAS_TARGET_INRESET) {
ccb->ccb_h.status = CAM_REQUEUE_REQ | CAM_DEV_QFRZN;
mps_dprint(sc, MPS_INFO, "%s: Freezing devq for target ID %d\n",
__func__, targ->tid);
xpt_freeze_devq(ccb->ccb_h.path, 1);
xpt_done(ccb);
return;
}
cm = mps_alloc_command(sc);
if (cm == NULL || (sc->mps_flags & MPS_FLAGS_DIAGRESET)) {
if (cm != NULL) {
mps_free_command(sc, cm);
}
if ((sassc->flags & MPSSAS_QUEUE_FROZEN) == 0) {
xpt_freeze_simq(sassc->sim, 1);
sassc->flags |= MPSSAS_QUEUE_FROZEN;
}
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
ccb->ccb_h.status |= CAM_REQUEUE_REQ;
xpt_done(ccb);
return;
}
req = (MPI2_SCSI_IO_REQUEST *)cm->cm_req;
bzero(req, sizeof(*req));
req->DevHandle = htole16(targ->handle);
req->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
req->MsgFlags = 0;
req->SenseBufferLowAddress = htole32(cm->cm_sense_busaddr);
req->SenseBufferLength = MPS_SENSE_LEN;
req->SGLFlags = 0;
req->ChainOffset = 0;
req->SGLOffset0 = 24; /* 32bit word offset to the SGL */
req->SGLOffset1= 0;
req->SGLOffset2= 0;
req->SGLOffset3= 0;
req->SkipCount = 0;
req->DataLength = htole32(csio->dxfer_len);
req->BidirectionalDataLength = 0;
req->IoFlags = htole16(csio->cdb_len);
req->EEDPFlags = 0;
/* Note: BiDirectional transfers are not supported */
switch (csio->ccb_h.flags & CAM_DIR_MASK) {
case CAM_DIR_IN:
mpi_control = MPI2_SCSIIO_CONTROL_READ;
cm->cm_flags |= MPS_CM_FLAGS_DATAIN;
break;
case CAM_DIR_OUT:
mpi_control = MPI2_SCSIIO_CONTROL_WRITE;
cm->cm_flags |= MPS_CM_FLAGS_DATAOUT;
break;
case CAM_DIR_NONE:
default:
mpi_control = MPI2_SCSIIO_CONTROL_NODATATRANSFER;
break;
}
if (csio->cdb_len == 32)
mpi_control |= 4 << MPI2_SCSIIO_CONTROL_ADDCDBLEN_SHIFT;
/*
* It looks like the hardware doesn't require an explicit tag
* number for each transaction. SAM Task Management not supported
* at the moment.
*/
switch (csio->tag_action) {
case MSG_HEAD_OF_Q_TAG:
mpi_control |= MPI2_SCSIIO_CONTROL_HEADOFQ;
break;
case MSG_ORDERED_Q_TAG:
mpi_control |= MPI2_SCSIIO_CONTROL_ORDEREDQ;
break;
case MSG_ACA_TASK:
mpi_control |= MPI2_SCSIIO_CONTROL_ACAQ;
break;
case CAM_TAG_ACTION_NONE:
case MSG_SIMPLE_Q_TAG:
default:
mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
break;
}
mpi_control |= (csio->priority << MPI2_SCSIIO_CONTROL_TASKPRI_SHIFT) &
MPI2_SCSIIO_CONTROL_TASKPRI_MASK;
mpi_control |= sc->mapping_table[csio->ccb_h.target_id].TLR_bits;
req->Control = htole32(mpi_control);
if (MPS_SET_LUN(req->LUN, csio->ccb_h.target_lun) != 0) {
mps_free_command(sc, cm);
mpssas_set_ccbstatus(ccb, CAM_LUN_INVALID);
xpt_done(ccb);
return;
}
if (csio->ccb_h.flags & CAM_CDB_POINTER)
bcopy(csio->cdb_io.cdb_ptr, &req->CDB.CDB32[0], csio->cdb_len);
else
bcopy(csio->cdb_io.cdb_bytes, &req->CDB.CDB32[0],csio->cdb_len);
req->IoFlags = htole16(csio->cdb_len);
/*
* Check if EEDP is supported and enabled. If it is then check if the
* SCSI opcode could be using EEDP. If so, make sure the LUN exists and
* is formatted for EEDP support. If all of this is true, set CDB up
* for EEDP transfer.
*/
eedp_flags = op_code_prot[req->CDB.CDB32[0]];
if (sc->eedp_enabled && eedp_flags) {
SLIST_FOREACH(lun, &targ->luns, lun_link) {
if (lun->lun_id == csio->ccb_h.target_lun) {
break;
}
}
if ((lun != NULL) && (lun->eedp_formatted)) {
req->EEDPBlockSize = htole16(lun->eedp_block_size);
eedp_flags |= (MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
req->EEDPFlags = htole16(eedp_flags);
/*
* If CDB less than 32, fill in Primary Ref Tag with
* low 4 bytes of LBA. If CDB is 32, tag stuff is
* already there. Also, set protection bit. FreeBSD
* currently does not support CDBs bigger than 16, but
* the code doesn't hurt, and will be here for the
* future.
*/
if (csio->cdb_len != 32) {
lba_byte = (csio->cdb_len == 16) ? 6 : 2;
ref_tag_addr = (uint8_t *)&req->CDB.EEDP32.
PrimaryReferenceTag;
for (i = 0; i < 4; i++) {
*ref_tag_addr =
req->CDB.CDB32[lba_byte + i];
ref_tag_addr++;
}
req->CDB.EEDP32.PrimaryReferenceTag =
htole32(req->CDB.EEDP32.PrimaryReferenceTag);
req->CDB.EEDP32.PrimaryApplicationTagMask =
0xFFFF;
req->CDB.CDB32[1] = (req->CDB.CDB32[1] & 0x1F) |
0x20;
} else {
eedp_flags |=
MPI2_SCSIIO_EEDPFLAGS_INC_PRI_APPTAG;
req->EEDPFlags = htole16(eedp_flags);
req->CDB.CDB32[10] = (req->CDB.CDB32[10] &
0x1F) | 0x20;
}
}
}
cm->cm_length = csio->dxfer_len;
if (cm->cm_length != 0) {
cm->cm_data = ccb;
cm->cm_flags |= MPS_CM_FLAGS_USE_CCB;
} else {
cm->cm_data = NULL;
}
cm->cm_sge = &req->SGL;
cm->cm_sglsize = (32 - 24) * 4;
cm->cm_desc.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
cm->cm_desc.SCSIIO.DevHandle = htole16(targ->handle);
cm->cm_complete = mpssas_scsiio_complete;
cm->cm_complete_data = ccb;
cm->cm_targ = targ;
cm->cm_lun = csio->ccb_h.target_lun;
cm->cm_ccb = ccb;
/*
* If HBA is a WD and the command is not for a retry, try to build a
* direct I/O message. If failed, or the command is for a retry, send
* the I/O to the IR volume itself.
*/
if (sc->WD_valid_config) {
if (ccb->ccb_h.sim_priv.entries[0].field == MPS_WD_RETRY) {
mpssas_direct_drive_io(sassc, cm, ccb);
} else {
mpssas_set_ccbstatus(ccb, CAM_REQ_INPROG);
}
}
#if defined(BUF_TRACKING) || defined(FULL_BUF_TRACKING)
if (csio->bio != NULL)
biotrack(csio->bio, __func__);
#endif
csio->ccb_h.qos.sim_data = sbinuptime();
callout_reset_sbt(&cm->cm_callout, SBT_1MS * ccb->ccb_h.timeout, 0,
mpssas_scsiio_timeout, cm, 0);
targ->issued++;
targ->outstanding++;
TAILQ_INSERT_TAIL(&targ->commands, cm, cm_link);
ccb->ccb_h.status |= CAM_SIM_QUEUED;
mpssas_log_command(cm, MPS_XINFO, "%s cm %p ccb %p outstanding %u\n",
__func__, cm, ccb, targ->outstanding);
mps_map_command(sc, cm);
return;
}
/**
* mps_sc_failed_io_info - translated non-succesfull SCSI_IO request
*/
static void
mps_sc_failed_io_info(struct mps_softc *sc, struct ccb_scsiio *csio,
Mpi2SCSIIOReply_t *mpi_reply)
{
u32 response_info;
u8 *response_bytes;
u16 ioc_status = le16toh(mpi_reply->IOCStatus) &
MPI2_IOCSTATUS_MASK;
u8 scsi_state = mpi_reply->SCSIState;
u8 scsi_status = mpi_reply->SCSIStatus;
u32 log_info = le32toh(mpi_reply->IOCLogInfo);
const char *desc_ioc_state, *desc_scsi_status;
if (log_info == 0x31170000)
return;
desc_ioc_state = mps_describe_table(mps_iocstatus_string,
ioc_status);
desc_scsi_status = mps_describe_table(mps_scsi_status_string,
scsi_status);
mps_dprint(sc, MPS_XINFO, "\thandle(0x%04x), ioc_status(%s)(0x%04x)\n",
le16toh(mpi_reply->DevHandle), desc_ioc_state, ioc_status);
/*
*We can add more detail about underflow data here
* TO-DO
*/
mps_dprint(sc, MPS_XINFO, "\tscsi_status(%s)(0x%02x), "
"scsi_state %b\n", desc_scsi_status, scsi_status,
scsi_state, "\20" "\1AutosenseValid" "\2AutosenseFailed"
"\3NoScsiStatus" "\4Terminated" "\5Response InfoValid");
if (sc->mps_debug & MPS_XINFO &&
scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
mps_dprint(sc, MPS_XINFO, "-> Sense Buffer Data : Start :\n");
scsi_sense_print(csio);
mps_dprint(sc, MPS_XINFO, "-> Sense Buffer Data : End :\n");
}
if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID) {
response_info = le32toh(mpi_reply->ResponseInfo);
response_bytes = (u8 *)&response_info;
mps_dprint(sc, MPS_XINFO, "response code(0x%1x): %s\n",
response_bytes[0],
mps_describe_table(mps_scsi_taskmgmt_string,
response_bytes[0]));
}
}
static void
mpssas_scsiio_complete(struct mps_softc *sc, struct mps_command *cm)
{
MPI2_SCSI_IO_REPLY *rep;
union ccb *ccb;
struct ccb_scsiio *csio;
struct mpssas_softc *sassc;
struct scsi_vpd_supported_page_list *vpd_list = NULL;
u8 *TLR_bits, TLR_on;
int dir = 0, i;
u16 alloc_len;
struct mpssas_target *target;
target_id_t target_id;
MPS_FUNCTRACE(sc);
mps_dprint(sc, MPS_TRACE,
"cm %p SMID %u ccb %p reply %p outstanding %u\n", cm,
cm->cm_desc.Default.SMID, cm->cm_ccb, cm->cm_reply,
cm->cm_targ->outstanding);
callout_stop(&cm->cm_callout);
mtx_assert(&sc->mps_mtx, MA_OWNED);
sassc = sc->sassc;
ccb = cm->cm_complete_data;
csio = &ccb->csio;
target_id = csio->ccb_h.target_id;
rep = (MPI2_SCSI_IO_REPLY *)cm->cm_reply;
/*
* XXX KDM if the chain allocation fails, does it matter if we do
* the sync and unload here? It is simpler to do it in every case,
* assuming it doesn't cause problems.
*/
if (cm->cm_data != NULL) {
if (cm->cm_flags & MPS_CM_FLAGS_DATAIN)
dir = BUS_DMASYNC_POSTREAD;
else if (cm->cm_flags & MPS_CM_FLAGS_DATAOUT)
dir = BUS_DMASYNC_POSTWRITE;
bus_dmamap_sync(sc->buffer_dmat, cm->cm_dmamap, dir);
bus_dmamap_unload(sc->buffer_dmat, cm->cm_dmamap);
}
cm->cm_targ->completed++;
cm->cm_targ->outstanding--;
TAILQ_REMOVE(&cm->cm_targ->commands, cm, cm_link);
ccb->ccb_h.status &= ~(CAM_STATUS_MASK | CAM_SIM_QUEUED);
#if defined(BUF_TRACKING) || defined(FULL_BUF_TRACKING)
if (ccb->csio.bio != NULL)
biotrack(ccb->csio.bio, __func__);
#endif
if (cm->cm_flags & MPS_CM_FLAGS_ON_RECOVERY) {
TAILQ_REMOVE(&cm->cm_targ->timedout_commands, cm, cm_recovery);
KASSERT(cm->cm_state == MPS_CM_STATE_BUSY,
("Not busy for CM_FLAGS_TIMEDOUT: %u\n", cm->cm_state));
cm->cm_flags &= ~MPS_CM_FLAGS_ON_RECOVERY;
if (cm->cm_reply != NULL)
mpssas_log_command(cm, MPS_RECOVERY,
"completed timedout cm %p ccb %p during recovery "
"ioc %x scsi %x state %x xfer %u\n",
cm, cm->cm_ccb, le16toh(rep->IOCStatus),
rep->SCSIStatus, rep->SCSIState,
le32toh(rep->TransferCount));
else
mpssas_log_command(cm, MPS_RECOVERY,
"completed timedout cm %p ccb %p during recovery\n",
cm, cm->cm_ccb);
} else if (cm->cm_targ->tm != NULL) {
if (cm->cm_reply != NULL)
mpssas_log_command(cm, MPS_RECOVERY,
"completed cm %p ccb %p during recovery "
"ioc %x scsi %x state %x xfer %u\n",
cm, cm->cm_ccb, le16toh(rep->IOCStatus),
rep->SCSIStatus, rep->SCSIState,
le32toh(rep->TransferCount));
else
mpssas_log_command(cm, MPS_RECOVERY,
"completed cm %p ccb %p during recovery\n",
cm, cm->cm_ccb);
} else if ((sc->mps_flags & MPS_FLAGS_DIAGRESET) != 0) {
mpssas_log_command(cm, MPS_RECOVERY,
"reset completed cm %p ccb %p\n",
cm, cm->cm_ccb);
}
if ((cm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) {
/*
* We ran into an error after we tried to map the command,
* so we're getting a callback without queueing the command
* to the hardware. So we set the status here, and it will
* be retained below. We'll go through the "fast path",
* because there can be no reply when we haven't actually
* gone out to the hardware.
*/
mpssas_set_ccbstatus(ccb, CAM_REQUEUE_REQ);
/*
* Currently the only error included in the mask is
* MPS_CM_FLAGS_CHAIN_FAILED, which means we're out of
* chain frames. We need to freeze the queue until we get
* a command that completed without this error, which will
* hopefully have some chain frames attached that we can
* use. If we wanted to get smarter about it, we would
* only unfreeze the queue in this condition when we're
* sure that we're getting some chain frames back. That's
* probably unnecessary.
*/
if ((sassc->flags & MPSSAS_QUEUE_FROZEN) == 0) {
xpt_freeze_simq(sassc->sim, 1);
sassc->flags |= MPSSAS_QUEUE_FROZEN;
mps_dprint(sc, MPS_XINFO, "Error sending command, "
"freezing SIM queue\n");
}
}
/*
* If this is a Start Stop Unit command and it was issued by the driver
* during shutdown, decrement the refcount to account for all of the
* commands that were sent. All SSU commands should be completed before
* shutdown completes, meaning SSU_refcount will be 0 after SSU_started
* is TRUE.
*/
if (sc->SSU_started && (csio->cdb_io.cdb_bytes[0] == START_STOP_UNIT)) {
mps_dprint(sc, MPS_INFO, "Decrementing SSU count.\n");
sc->SSU_refcount--;
}
/* Take the fast path to completion */
if (cm->cm_reply == NULL) {
if (mpssas_get_ccbstatus(ccb) == CAM_REQ_INPROG) {
if ((sc->mps_flags & MPS_FLAGS_DIAGRESET) != 0)
mpssas_set_ccbstatus(ccb, CAM_SCSI_BUS_RESET);
else {
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP);
ccb->csio.scsi_status = SCSI_STATUS_OK;
}
if (sassc->flags & MPSSAS_QUEUE_FROZEN) {
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
sassc->flags &= ~MPSSAS_QUEUE_FROZEN;
mps_dprint(sc, MPS_XINFO,
"Unfreezing SIM queue\n");
}
}
/*
* There are two scenarios where the status won't be
* CAM_REQ_CMP. The first is if MPS_CM_FLAGS_ERROR_MASK is
* set, the second is in the MPS_FLAGS_DIAGRESET above.
*/
if (mpssas_get_ccbstatus(ccb) != CAM_REQ_CMP) {
/*
* Freeze the dev queue so that commands are
* executed in the correct order after error
* recovery.
*/
ccb->ccb_h.status |= CAM_DEV_QFRZN;
xpt_freeze_devq(ccb->ccb_h.path, /*count*/ 1);
}
mps_free_command(sc, cm);
xpt_done(ccb);
return;
}
mpssas_log_command(cm, MPS_XINFO,
"ioc %x scsi %x state %x xfer %u\n",
le16toh(rep->IOCStatus), rep->SCSIStatus, rep->SCSIState,
le32toh(rep->TransferCount));
/*
* If this is a Direct Drive I/O, reissue the I/O to the original IR
* Volume if an error occurred (normal I/O retry). Use the original
* CCB, but set a flag that this will be a retry so that it's sent to
* the original volume. Free the command but reuse the CCB.
*/
if (cm->cm_flags & MPS_CM_FLAGS_DD_IO) {
mps_free_command(sc, cm);
ccb->ccb_h.sim_priv.entries[0].field = MPS_WD_RETRY;
mpssas_action_scsiio(sassc, ccb);
return;
} else
ccb->ccb_h.sim_priv.entries[0].field = 0;
switch (le16toh(rep->IOCStatus) & MPI2_IOCSTATUS_MASK) {
case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
csio->resid = cm->cm_length - le32toh(rep->TransferCount);
/* FALLTHROUGH */
case MPI2_IOCSTATUS_SUCCESS:
case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
if ((le16toh(rep->IOCStatus) & MPI2_IOCSTATUS_MASK) ==
MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR)
mpssas_log_command(cm, MPS_XINFO, "recovered error\n");
/* Completion failed at the transport level. */
if (rep->SCSIState & (MPI2_SCSI_STATE_NO_SCSI_STATUS |
MPI2_SCSI_STATE_TERMINATED)) {
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
break;
}
/* In a modern packetized environment, an autosense failure
* implies that there's not much else that can be done to
* recover the command.
*/
if (rep->SCSIState & MPI2_SCSI_STATE_AUTOSENSE_FAILED) {
mpssas_set_ccbstatus(ccb, CAM_AUTOSENSE_FAIL);
break;
}
/*
* CAM doesn't care about SAS Response Info data, but if this is
* the state check if TLR should be done. If not, clear the
* TLR_bits for the target.
*/
if ((rep->SCSIState & MPI2_SCSI_STATE_RESPONSE_INFO_VALID) &&
((le32toh(rep->ResponseInfo) &
MPI2_SCSI_RI_MASK_REASONCODE) ==
MPS_SCSI_RI_INVALID_FRAME)) {
sc->mapping_table[target_id].TLR_bits =
(u8)MPI2_SCSIIO_CONTROL_NO_TLR;
}
/*
* Intentionally override the normal SCSI status reporting
* for these two cases. These are likely to happen in a
* multi-initiator environment, and we want to make sure that
* CAM retries these commands rather than fail them.
*/
if ((rep->SCSIStatus == MPI2_SCSI_STATUS_COMMAND_TERMINATED) ||
(rep->SCSIStatus == MPI2_SCSI_STATUS_TASK_ABORTED)) {
mpssas_set_ccbstatus(ccb, CAM_REQ_ABORTED);
break;
}
/* Handle normal status and sense */
csio->scsi_status = rep->SCSIStatus;
if (rep->SCSIStatus == MPI2_SCSI_STATUS_GOOD)
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP);
else
mpssas_set_ccbstatus(ccb, CAM_SCSI_STATUS_ERROR);
if (rep->SCSIState & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
int sense_len, returned_sense_len;
returned_sense_len = min(le32toh(rep->SenseCount),
sizeof(struct scsi_sense_data));
if (returned_sense_len < ccb->csio.sense_len)
ccb->csio.sense_resid = ccb->csio.sense_len -
returned_sense_len;
else
ccb->csio.sense_resid = 0;
sense_len = min(returned_sense_len,
ccb->csio.sense_len - ccb->csio.sense_resid);
bzero(&ccb->csio.sense_data,
sizeof(ccb->csio.sense_data));
bcopy(cm->cm_sense, &ccb->csio.sense_data, sense_len);
ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
}
/*
* Check if this is an INQUIRY command. If it's a VPD inquiry,
* and it's page code 0 (Supported Page List), and there is
* inquiry data, and this is for a sequential access device, and
* the device is an SSP target, and TLR is supported by the
* controller, turn the TLR_bits value ON if page 0x90 is
* supported.
*/
if ((csio->cdb_io.cdb_bytes[0] == INQUIRY) &&
(csio->cdb_io.cdb_bytes[1] & SI_EVPD) &&
(csio->cdb_io.cdb_bytes[2] == SVPD_SUPPORTED_PAGE_LIST) &&
((csio->ccb_h.flags & CAM_DATA_MASK) == CAM_DATA_VADDR) &&
(csio->data_ptr != NULL) &&
((csio->data_ptr[0] & 0x1f) == T_SEQUENTIAL) &&
(sc->control_TLR) &&
(sc->mapping_table[target_id].device_info &
MPI2_SAS_DEVICE_INFO_SSP_TARGET)) {
vpd_list = (struct scsi_vpd_supported_page_list *)
csio->data_ptr;
TLR_bits = &sc->mapping_table[target_id].TLR_bits;
*TLR_bits = (u8)MPI2_SCSIIO_CONTROL_NO_TLR;
TLR_on = (u8)MPI2_SCSIIO_CONTROL_TLR_ON;
alloc_len = ((u16)csio->cdb_io.cdb_bytes[3] << 8) +
csio->cdb_io.cdb_bytes[4];
alloc_len -= csio->resid;
for (i = 0; i < MIN(vpd_list->length, alloc_len); i++) {
if (vpd_list->list[i] == 0x90) {
*TLR_bits = TLR_on;
break;
}
}
}
/*
* If this is a SATA direct-access end device, mark it so that
* a SCSI StartStopUnit command will be sent to it when the
* driver is being shutdown.
*/
if ((csio->cdb_io.cdb_bytes[0] == INQUIRY) &&
((csio->data_ptr[0] & 0x1f) == T_DIRECT) &&
(sc->mapping_table[target_id].device_info &
MPI2_SAS_DEVICE_INFO_SATA_DEVICE) &&
((sc->mapping_table[target_id].device_info &
MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) ==
MPI2_SAS_DEVICE_INFO_END_DEVICE)) {
target = &sassc->targets[target_id];
target->supports_SSU = TRUE;
mps_dprint(sc, MPS_XINFO, "Target %d supports SSU\n",
target_id);
}
break;
case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
/*
* If devinfo is 0 this will be a volume. In that case don't
* tell CAM that the volume is not there. We want volumes to
* be enumerated until they are deleted/removed, not just
* failed.
*/
if (cm->cm_targ->devinfo == 0)
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP);
else
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
break;
case MPI2_IOCSTATUS_INVALID_SGL:
mps_print_scsiio_cmd(sc, cm);
mpssas_set_ccbstatus(ccb, CAM_UNREC_HBA_ERROR);
break;
case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
/*
* This is one of the responses that comes back when an I/O
* has been aborted. If it is because of a timeout that we
* initiated, just set the status to CAM_CMD_TIMEOUT.
* Otherwise set it to CAM_REQ_ABORTED. The effect on the
* command is the same (it gets retried, subject to the
* retry counter), the only difference is what gets printed
* on the console.
*/
if (cm->cm_flags & MPS_CM_FLAGS_TIMEDOUT)
mpssas_set_ccbstatus(ccb, CAM_CMD_TIMEOUT);
else
mpssas_set_ccbstatus(ccb, CAM_REQ_ABORTED);
break;
case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
/* resid is ignored for this condition */
csio->resid = 0;
mpssas_set_ccbstatus(ccb, CAM_DATA_RUN_ERR);
break;
case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
/*
* These can sometimes be transient transport-related
* errors, and sometimes persistent drive-related errors.
* We used to retry these without decrementing the retry
* count by returning CAM_REQUEUE_REQ. Unfortunately, if
* we hit a persistent drive problem that returns one of
* these error codes, we would retry indefinitely. So,
* return CAM_REQ_CMP_ERROR so that we decrement the retry
* count and avoid infinite retries. We're taking the
* potential risk of flagging false failures in the event
* of a topology-related error (e.g. a SAS expander problem
* causes a command addressed to a drive to fail), but
* avoiding getting into an infinite retry loop. However,
* if we get them while were moving a device, we should
* fail the request as 'not there' because the device
* is effectively gone.
*/
if (cm->cm_targ->flags & MPSSAS_TARGET_INREMOVAL)
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
else
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
mps_dprint(sc, MPS_INFO,
"Controller reported %s tgt %u SMID %u loginfo %x%s\n",
mps_describe_table(mps_iocstatus_string,
le16toh(rep->IOCStatus) & MPI2_IOCSTATUS_MASK),
target_id, cm->cm_desc.Default.SMID,
le32toh(rep->IOCLogInfo),
(cm->cm_targ->flags & MPSSAS_TARGET_INREMOVAL) ? " departing" : "");
mps_dprint(sc, MPS_XINFO,
"SCSIStatus %x SCSIState %x xfercount %u\n",
rep->SCSIStatus, rep->SCSIState,
le32toh(rep->TransferCount));
break;
case MPI2_IOCSTATUS_INVALID_FUNCTION:
case MPI2_IOCSTATUS_INTERNAL_ERROR:
case MPI2_IOCSTATUS_INVALID_VPID:
case MPI2_IOCSTATUS_INVALID_FIELD:
case MPI2_IOCSTATUS_INVALID_STATE:
case MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED:
case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
default:
mpssas_log_command(cm, MPS_XINFO,
"completed ioc %x loginfo %x scsi %x state %x xfer %u\n",
le16toh(rep->IOCStatus), le32toh(rep->IOCLogInfo),
rep->SCSIStatus, rep->SCSIState,
le32toh(rep->TransferCount));
csio->resid = cm->cm_length;
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
break;
}
mps_sc_failed_io_info(sc,csio,rep);
if (sassc->flags & MPSSAS_QUEUE_FROZEN) {
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
sassc->flags &= ~MPSSAS_QUEUE_FROZEN;
mps_dprint(sc, MPS_XINFO, "Command completed, "
"unfreezing SIM queue\n");
}
if (mpssas_get_ccbstatus(ccb) != CAM_REQ_CMP) {
ccb->ccb_h.status |= CAM_DEV_QFRZN;
xpt_freeze_devq(ccb->ccb_h.path, /*count*/ 1);
}
/*
* Check to see if we're removing the device. If so, and this is the
* last command on the queue, proceed with the deferred removal of the
* device. Note, for removing a volume, this won't trigger because
* pending_remove_tm will be NULL.
*/
if (cm->cm_targ->flags & MPSSAS_TARGET_INREMOVAL) {
if (TAILQ_FIRST(&cm->cm_targ->commands) == NULL &&
cm->cm_targ->pending_remove_tm != NULL) {
mps_dprint(sc, MPS_INFO,
"Last pending command complete: starting remove_device target %u handle 0x%04x\n",
cm->cm_targ->tid, cm->cm_targ->handle);
mps_map_command(sc, cm->cm_targ->pending_remove_tm);
cm->cm_targ->pending_remove_tm = NULL;
}
}
mps_free_command(sc, cm);
xpt_done(ccb);
}
/* All Request reached here are Endian safe */
static void
mpssas_direct_drive_io(struct mpssas_softc *sassc, struct mps_command *cm,
union ccb *ccb) {
pMpi2SCSIIORequest_t pIO_req;
struct mps_softc *sc = sassc->sc;
uint64_t virtLBA;
uint32_t physLBA, stripe_offset, stripe_unit;
uint32_t io_size, column;
uint8_t *ptrLBA, lba_idx, physLBA_byte, *CDB;
/*
* If this is a valid SCSI command (Read6, Read10, Read16, Write6,
* Write10, or Write16), build a direct I/O message. Otherwise, the I/O
* will be sent to the IR volume itself. Since Read6 and Write6 are a
* bit different than the 10/16 CDBs, handle them separately.
*/
pIO_req = (pMpi2SCSIIORequest_t)cm->cm_req;
CDB = pIO_req->CDB.CDB32;
/*
* Handle 6 byte CDBs.
*/
if ((pIO_req->DevHandle == sc->DD_dev_handle) && ((CDB[0] == READ_6) ||
(CDB[0] == WRITE_6))) {
/*
* Get the transfer size in blocks.
*/
io_size = (cm->cm_length >> sc->DD_block_exponent);
/*
* Get virtual LBA given in the CDB.
*/
virtLBA = ((uint64_t)(CDB[1] & 0x1F) << 16) |
((uint64_t)CDB[2] << 8) | (uint64_t)CDB[3];
/*
* Check that LBA range for I/O does not exceed volume's
* MaxLBA.
*/
if ((virtLBA + (uint64_t)io_size - 1) <=
sc->DD_max_lba) {
/*
* Check if the I/O crosses a stripe boundary. If not,
* translate the virtual LBA to a physical LBA and set
* the DevHandle for the PhysDisk to be used. If it
* does cross a boundary, do normal I/O. To get the
* right DevHandle to use, get the map number for the
* column, then use that map number to look up the
* DevHandle of the PhysDisk.
*/
stripe_offset = (uint32_t)virtLBA &
(sc->DD_stripe_size - 1);
if ((stripe_offset + io_size) <= sc->DD_stripe_size) {
physLBA = (uint32_t)virtLBA >>
sc->DD_stripe_exponent;
stripe_unit = physLBA / sc->DD_num_phys_disks;
column = physLBA % sc->DD_num_phys_disks;
pIO_req->DevHandle =
htole16(sc->DD_column_map[column].dev_handle);
/* ???? Is this endian safe*/
cm->cm_desc.SCSIIO.DevHandle =
pIO_req->DevHandle;
physLBA = (stripe_unit <<
sc->DD_stripe_exponent) + stripe_offset;
ptrLBA = &pIO_req->CDB.CDB32[1];
physLBA_byte = (uint8_t)(physLBA >> 16);
*ptrLBA = physLBA_byte;
ptrLBA = &pIO_req->CDB.CDB32[2];
physLBA_byte = (uint8_t)(physLBA >> 8);
*ptrLBA = physLBA_byte;
ptrLBA = &pIO_req->CDB.CDB32[3];
physLBA_byte = (uint8_t)physLBA;
*ptrLBA = physLBA_byte;
/*
* Set flag that Direct Drive I/O is
* being done.
*/
cm->cm_flags |= MPS_CM_FLAGS_DD_IO;
}
}
return;
}
/*
* Handle 10, 12 or 16 byte CDBs.
*/
if ((pIO_req->DevHandle == sc->DD_dev_handle) && ((CDB[0] == READ_10) ||
(CDB[0] == WRITE_10) || (CDB[0] == READ_16) ||
(CDB[0] == WRITE_16) || (CDB[0] == READ_12) ||
(CDB[0] == WRITE_12))) {
/*
* For 16-byte CDB's, verify that the upper 4 bytes of the CDB
* are 0. If not, this is accessing beyond 2TB so handle it in
* the else section. 10-byte and 12-byte CDB's are OK.
* FreeBSD sends very rare 12 byte READ/WRITE, but driver is
* ready to accept 12byte CDB for Direct IOs.
*/
if ((CDB[0] == READ_10 || CDB[0] == WRITE_10) ||
(CDB[0] == READ_12 || CDB[0] == WRITE_12) ||
!(CDB[2] | CDB[3] | CDB[4] | CDB[5])) {
/*
* Get the transfer size in blocks.
*/
io_size = (cm->cm_length >> sc->DD_block_exponent);
/*
* Get virtual LBA. Point to correct lower 4 bytes of
* LBA in the CDB depending on command.
*/
lba_idx = ((CDB[0] == READ_12) ||
(CDB[0] == WRITE_12) ||
(CDB[0] == READ_10) ||
(CDB[0] == WRITE_10))? 2 : 6;
virtLBA = ((uint64_t)CDB[lba_idx] << 24) |
((uint64_t)CDB[lba_idx + 1] << 16) |
((uint64_t)CDB[lba_idx + 2] << 8) |
(uint64_t)CDB[lba_idx + 3];
/*
* Check that LBA range for I/O does not exceed volume's
* MaxLBA.
*/
if ((virtLBA + (uint64_t)io_size - 1) <=
sc->DD_max_lba) {
/*
* Check if the I/O crosses a stripe boundary.
* If not, translate the virtual LBA to a
* physical LBA and set the DevHandle for the
* PhysDisk to be used. If it does cross a
* boundary, do normal I/O. To get the right
* DevHandle to use, get the map number for the
* column, then use that map number to look up
* the DevHandle of the PhysDisk.
*/
stripe_offset = (uint32_t)virtLBA &
(sc->DD_stripe_size - 1);
if ((stripe_offset + io_size) <=
sc->DD_stripe_size) {
physLBA = (uint32_t)virtLBA >>
sc->DD_stripe_exponent;
stripe_unit = physLBA /
sc->DD_num_phys_disks;
column = physLBA %
sc->DD_num_phys_disks;
pIO_req->DevHandle =
htole16(sc->DD_column_map[column].
dev_handle);
cm->cm_desc.SCSIIO.DevHandle =
pIO_req->DevHandle;
physLBA = (stripe_unit <<
sc->DD_stripe_exponent) +
stripe_offset;
ptrLBA =
&pIO_req->CDB.CDB32[lba_idx];
physLBA_byte = (uint8_t)(physLBA >> 24);
*ptrLBA = physLBA_byte;
ptrLBA =
&pIO_req->CDB.CDB32[lba_idx + 1];
physLBA_byte = (uint8_t)(physLBA >> 16);
*ptrLBA = physLBA_byte;
ptrLBA =
&pIO_req->CDB.CDB32[lba_idx + 2];
physLBA_byte = (uint8_t)(physLBA >> 8);
*ptrLBA = physLBA_byte;
ptrLBA =
&pIO_req->CDB.CDB32[lba_idx + 3];
physLBA_byte = (uint8_t)physLBA;
*ptrLBA = physLBA_byte;
/*
* Set flag that Direct Drive I/O is
* being done.
*/
cm->cm_flags |= MPS_CM_FLAGS_DD_IO;
}
}
} else {
/*
* 16-byte CDB and the upper 4 bytes of the CDB are not
* 0. Get the transfer size in blocks.
*/
io_size = (cm->cm_length >> sc->DD_block_exponent);
/*
* Get virtual LBA.
*/
virtLBA = ((uint64_t)CDB[2] << 54) |
((uint64_t)CDB[3] << 48) |
((uint64_t)CDB[4] << 40) |
((uint64_t)CDB[5] << 32) |
((uint64_t)CDB[6] << 24) |
((uint64_t)CDB[7] << 16) |
((uint64_t)CDB[8] << 8) |
(uint64_t)CDB[9];
/*
* Check that LBA range for I/O does not exceed volume's
* MaxLBA.
*/
if ((virtLBA + (uint64_t)io_size - 1) <=
sc->DD_max_lba) {
/*
* Check if the I/O crosses a stripe boundary.
* If not, translate the virtual LBA to a
* physical LBA and set the DevHandle for the
* PhysDisk to be used. If it does cross a
* boundary, do normal I/O. To get the right
* DevHandle to use, get the map number for the
* column, then use that map number to look up
* the DevHandle of the PhysDisk.
*/
stripe_offset = (uint32_t)virtLBA &
(sc->DD_stripe_size - 1);
if ((stripe_offset + io_size) <=
sc->DD_stripe_size) {
physLBA = (uint32_t)(virtLBA >>
sc->DD_stripe_exponent);
stripe_unit = physLBA /
sc->DD_num_phys_disks;
column = physLBA %
sc->DD_num_phys_disks;
pIO_req->DevHandle =
htole16(sc->DD_column_map[column].
dev_handle);
cm->cm_desc.SCSIIO.DevHandle =
pIO_req->DevHandle;
physLBA = (stripe_unit <<
sc->DD_stripe_exponent) +
stripe_offset;
/*
* Set upper 4 bytes of LBA to 0. We
* assume that the phys disks are less
* than 2 TB's in size. Then, set the
* lower 4 bytes.
*/
pIO_req->CDB.CDB32[2] = 0;
pIO_req->CDB.CDB32[3] = 0;
pIO_req->CDB.CDB32[4] = 0;
pIO_req->CDB.CDB32[5] = 0;
ptrLBA = &pIO_req->CDB.CDB32[6];
physLBA_byte = (uint8_t)(physLBA >> 24);
*ptrLBA = physLBA_byte;
ptrLBA = &pIO_req->CDB.CDB32[7];
physLBA_byte = (uint8_t)(physLBA >> 16);
*ptrLBA = physLBA_byte;
ptrLBA = &pIO_req->CDB.CDB32[8];
physLBA_byte = (uint8_t)(physLBA >> 8);
*ptrLBA = physLBA_byte;
ptrLBA = &pIO_req->CDB.CDB32[9];
physLBA_byte = (uint8_t)physLBA;
*ptrLBA = physLBA_byte;
/*
* Set flag that Direct Drive I/O is
* being done.
*/
cm->cm_flags |= MPS_CM_FLAGS_DD_IO;
}
}
}
}
}
static void
mpssas_smpio_complete(struct mps_softc *sc, struct mps_command *cm)
{
MPI2_SMP_PASSTHROUGH_REPLY *rpl;
MPI2_SMP_PASSTHROUGH_REQUEST *req;
uint64_t sasaddr;
union ccb *ccb;
ccb = cm->cm_complete_data;
/*
* Currently there should be no way we can hit this case. It only
* happens when we have a failure to allocate chain frames, and SMP
* commands require two S/G elements only. That should be handled
* in the standard request size.
*/
if ((cm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) {
mps_dprint(sc, MPS_ERROR,"%s: cm_flags = %#x on SMP request!\n",
__func__, cm->cm_flags);
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
goto bailout;
}
rpl = (MPI2_SMP_PASSTHROUGH_REPLY *)cm->cm_reply;
if (rpl == NULL) {
mps_dprint(sc, MPS_ERROR, "%s: NULL cm_reply!\n", __func__);
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
goto bailout;
}
req = (MPI2_SMP_PASSTHROUGH_REQUEST *)cm->cm_req;
sasaddr = le32toh(req->SASAddress.Low);
sasaddr |= ((uint64_t)(le32toh(req->SASAddress.High))) << 32;
if ((le16toh(rpl->IOCStatus) & MPI2_IOCSTATUS_MASK) !=
MPI2_IOCSTATUS_SUCCESS ||
rpl->SASStatus != MPI2_SASSTATUS_SUCCESS) {
mps_dprint(sc, MPS_XINFO, "%s: IOCStatus %04x SASStatus %02x\n",
__func__, le16toh(rpl->IOCStatus), rpl->SASStatus);
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
goto bailout;
}
mps_dprint(sc, MPS_XINFO, "%s: SMP request to SAS address "
"%#jx completed successfully\n", __func__,
(uintmax_t)sasaddr);
if (ccb->smpio.smp_response[2] == SMP_FR_ACCEPTED)
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP);
else
mpssas_set_ccbstatus(ccb, CAM_SMP_STATUS_ERROR);
bailout:
/*
* We sync in both directions because we had DMAs in the S/G list
* in both directions.
*/
bus_dmamap_sync(sc->buffer_dmat, cm->cm_dmamap,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->buffer_dmat, cm->cm_dmamap);
mps_free_command(sc, cm);
xpt_done(ccb);
}
static void
mpssas_send_smpcmd(struct mpssas_softc *sassc, union ccb *ccb, uint64_t sasaddr)
{
struct mps_command *cm;
uint8_t *request, *response;
MPI2_SMP_PASSTHROUGH_REQUEST *req;
struct mps_softc *sc;
int error;
sc = sassc->sc;
error = 0;
/*
* 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:
mps_dprint(sc, MPS_ERROR,
"%s: physical addresses not supported\n", __func__);
mpssas_set_ccbstatus(ccb, CAM_REQ_INVALID);
xpt_done(ccb);
return;
case CAM_DATA_SG:
/*
* The chip does not support more than one buffer for the
* request or response.
*/
if ((ccb->smpio.smp_request_sglist_cnt > 1)
|| (ccb->smpio.smp_response_sglist_cnt > 1)) {
mps_dprint(sc, MPS_ERROR,
"%s: multiple request or response "
"buffer segments not supported for SMP\n",
__func__);
mpssas_set_ccbstatus(ccb, CAM_REQ_INVALID);
xpt_done(ccb);
return;
}
/*
* The CAM_SCATTER_VALID flag was originally implemented
* for the XPT_SCSI_IO CCB, which only has one data pointer.
* We have two. So, just take that flag to mean that we
* might have S/G lists, and look at the S/G segment count
* to figure out whether that is the case for each individual
* buffer.
*/
if (ccb->smpio.smp_request_sglist_cnt != 0) {
bus_dma_segment_t *req_sg;
req_sg = (bus_dma_segment_t *)ccb->smpio.smp_request;
request = (uint8_t *)(uintptr_t)req_sg[0].ds_addr;
} else
request = ccb->smpio.smp_request;
if (ccb->smpio.smp_response_sglist_cnt != 0) {
bus_dma_segment_t *rsp_sg;
rsp_sg = (bus_dma_segment_t *)ccb->smpio.smp_response;
response = (uint8_t *)(uintptr_t)rsp_sg[0].ds_addr;
} else
response = ccb->smpio.smp_response;
break;
case CAM_DATA_VADDR:
request = ccb->smpio.smp_request;
response = ccb->smpio.smp_response;
break;
default:
mpssas_set_ccbstatus(ccb, CAM_REQ_INVALID);
xpt_done(ccb);
return;
}
cm = mps_alloc_command(sc);
if (cm == NULL) {
mps_dprint(sc, MPS_ERROR,
"%s: cannot allocate command\n", __func__);
mpssas_set_ccbstatus(ccb, CAM_RESRC_UNAVAIL);
xpt_done(ccb);
return;
}
req = (MPI2_SMP_PASSTHROUGH_REQUEST *)cm->cm_req;
bzero(req, sizeof(*req));
req->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
/* Allow the chip to use any route to this SAS address. */
req->PhysicalPort = 0xff;
req->RequestDataLength = htole16(ccb->smpio.smp_request_len);
req->SGLFlags =
MPI2_SGLFLAGS_SYSTEM_ADDRESS_SPACE | MPI2_SGLFLAGS_SGL_TYPE_MPI;
mps_dprint(sc, MPS_XINFO, "%s: sending SMP request to SAS "
"address %#jx\n", __func__, (uintmax_t)sasaddr);
mpi_init_sge(cm, req, &req->SGL);
/*
* Set up a uio to pass into mps_map_command(). This allows us to
* do one map command, and one busdma call in there.
*/
cm->cm_uio.uio_iov = cm->cm_iovec;
cm->cm_uio.uio_iovcnt = 2;
cm->cm_uio.uio_segflg = UIO_SYSSPACE;
/*
* The read/write flag isn't used by busdma, but set it just in
* case. This isn't exactly accurate, either, since we're going in
* both directions.
*/
cm->cm_uio.uio_rw = UIO_WRITE;
cm->cm_iovec[0].iov_base = request;
cm->cm_iovec[0].iov_len = le16toh(req->RequestDataLength);
cm->cm_iovec[1].iov_base = response;
cm->cm_iovec[1].iov_len = ccb->smpio.smp_response_len;
cm->cm_uio.uio_resid = cm->cm_iovec[0].iov_len +
cm->cm_iovec[1].iov_len;
/*
* Trigger a warning message in mps_data_cb() for the user if we
* wind up exceeding two S/G segments. The chip expects one
* segment for the request and another for the response.
*/
cm->cm_max_segs = 2;
cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
cm->cm_complete = mpssas_smpio_complete;
cm->cm_complete_data = ccb;
/*
* Tell the mapping code that we're using a uio, and that this is
* an SMP passthrough request. There is a little special-case
* logic there (in mps_data_cb()) to handle the bidirectional
* transfer.
*/
cm->cm_flags |= MPS_CM_FLAGS_USE_UIO | MPS_CM_FLAGS_SMP_PASS |
MPS_CM_FLAGS_DATAIN | MPS_CM_FLAGS_DATAOUT;
/* The chip data format is little endian. */
req->SASAddress.High = htole32(sasaddr >> 32);
req->SASAddress.Low = htole32(sasaddr);
/*
* XXX Note that we don't have a timeout/abort mechanism here.
* From the manual, it looks like task management requests only
* work for SCSI IO and SATA passthrough requests. We may need to
* have a mechanism to retry requests in the event of a chip reset
* at least. Hopefully the chip will insure that any errors short
* of that are relayed back to the driver.
*/
error = mps_map_command(sc, cm);
if ((error != 0) && (error != EINPROGRESS)) {
mps_dprint(sc, MPS_ERROR,
"%s: error %d returned from mps_map_command()\n",
__func__, error);
goto bailout_error;
}
return;
bailout_error:
mps_free_command(sc, cm);
mpssas_set_ccbstatus(ccb, CAM_RESRC_UNAVAIL);
xpt_done(ccb);
return;
}
static void
mpssas_action_smpio(struct mpssas_softc *sassc, union ccb *ccb)
{
struct mps_softc *sc;
struct mpssas_target *targ;
uint64_t sasaddr = 0;
sc = sassc->sc;
/*
* Make sure the target exists.
*/
KASSERT(ccb->ccb_h.target_id < sassc->maxtargets,
("Target %d out of bounds in XPT_SMP_IO\n", ccb->ccb_h.target_id));
targ = &sassc->targets[ccb->ccb_h.target_id];
if (targ->handle == 0x0) {
mps_dprint(sc, MPS_ERROR,
"%s: target %d does not exist!\n", __func__,
ccb->ccb_h.target_id);
mpssas_set_ccbstatus(ccb, CAM_SEL_TIMEOUT);
xpt_done(ccb);
return;
}
/*
* If this device has an embedded SMP target, we'll talk to it
* directly.
* figure out what the expander's address is.
*/
if ((targ->devinfo & MPI2_SAS_DEVICE_INFO_SMP_TARGET) != 0)
sasaddr = targ->sasaddr;
/*
* If we don't have a SAS address for the expander yet, try
* grabbing it from the page 0x83 information cached in the
* transport layer for this target. LSI expanders report the
* expander SAS address as the port-associated SAS address in
* Inquiry VPD page 0x83. Maxim expanders don't report it in page
* 0x83.
*
* XXX KDM disable this for now, but leave it commented out so that
* it is obvious that this is another possible way to get the SAS
* address.
*
* The parent handle method below is a little more reliable, and
* the other benefit is that it works for devices other than SES
* devices. So you can send a SMP request to a da(4) device and it
* will get routed to the expander that device is attached to.
* (Assuming the da(4) device doesn't contain an SMP target...)
*/
#if 0
if (sasaddr == 0)
sasaddr = xpt_path_sas_addr(ccb->ccb_h.path);
#endif
/*
* If we still don't have a SAS address for the expander, look for
* the parent device of this device, which is probably the expander.
*/
if (sasaddr == 0) {
#ifdef OLD_MPS_PROBE
struct mpssas_target *parent_target;
#endif
if (targ->parent_handle == 0x0) {
mps_dprint(sc, MPS_ERROR,
"%s: handle %d does not have a valid "
"parent handle!\n", __func__, targ->handle);
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
#ifdef OLD_MPS_PROBE
parent_target = mpssas_find_target_by_handle(sassc, 0,
targ->parent_handle);
if (parent_target == NULL) {
mps_dprint(sc, MPS_ERROR,
"%s: handle %d does not have a valid "
"parent target!\n", __func__, targ->handle);
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
if ((parent_target->devinfo &
MPI2_SAS_DEVICE_INFO_SMP_TARGET) == 0) {
mps_dprint(sc, MPS_ERROR,
"%s: handle %d parent %d does not "
"have an SMP target!\n", __func__,
targ->handle, parent_target->handle);
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
sasaddr = parent_target->sasaddr;
#else /* OLD_MPS_PROBE */
if ((targ->parent_devinfo &
MPI2_SAS_DEVICE_INFO_SMP_TARGET) == 0) {
mps_dprint(sc, MPS_ERROR,
"%s: handle %d parent %d does not "
"have an SMP target!\n", __func__,
targ->handle, targ->parent_handle);
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
if (targ->parent_sasaddr == 0x0) {
mps_dprint(sc, MPS_ERROR,
"%s: handle %d parent handle %d does "
"not have a valid SAS address!\n",
__func__, targ->handle, targ->parent_handle);
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
sasaddr = targ->parent_sasaddr;
#endif /* OLD_MPS_PROBE */
}
if (sasaddr == 0) {
mps_dprint(sc, MPS_INFO,
"%s: unable to find SAS address for handle %d\n",
__func__, targ->handle);
mpssas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
mpssas_send_smpcmd(sassc, ccb, sasaddr);
return;
bailout:
xpt_done(ccb);
}
static void
mpssas_action_resetdev(struct mpssas_softc *sassc, union ccb *ccb)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mps_softc *sc;
struct mps_command *tm;
struct mpssas_target *targ;
MPS_FUNCTRACE(sassc->sc);
mtx_assert(&sassc->sc->mps_mtx, MA_OWNED);
KASSERT(ccb->ccb_h.target_id < sassc->maxtargets,
("Target %d out of bounds in XPT_RESET_DEV\n",
ccb->ccb_h.target_id));
sc = sassc->sc;
tm = mpssas_alloc_tm(sc);
if (tm == NULL) {
mps_dprint(sc, MPS_ERROR,
"command alloc failure in mpssas_action_resetdev\n");
mpssas_set_ccbstatus(ccb, CAM_RESRC_UNAVAIL);
xpt_done(ccb);
return;
}
targ = &sassc->targets[ccb->ccb_h.target_id];
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)tm->cm_req;
req->DevHandle = htole16(targ->handle);
req->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
/* SAS Hard Link Reset / SATA Link Reset */
req->MsgFlags = MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET;
tm->cm_data = NULL;
tm->cm_complete = mpssas_resetdev_complete;
tm->cm_complete_data = ccb;
tm->cm_targ = targ;
mpssas_prepare_for_tm(sc, tm, targ, CAM_LUN_WILDCARD);
mps_map_command(sc, tm);
}
static void
mpssas_resetdev_complete(struct mps_softc *sc, struct mps_command *tm)
{
MPI2_SCSI_TASK_MANAGE_REPLY *resp;
union ccb *ccb;
MPS_FUNCTRACE(sc);
mtx_assert(&sc->mps_mtx, MA_OWNED);
resp = (MPI2_SCSI_TASK_MANAGE_REPLY *)tm->cm_reply;
ccb = tm->cm_complete_data;
/*
* Currently there should be no way we can hit this case. It only
* happens when we have a failure to allocate chain frames, and
* task management commands don't have S/G lists.
*/
if ((tm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) {
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)tm->cm_req;
mps_dprint(sc, MPS_ERROR,
"%s: cm_flags = %#x for reset of handle %#04x! "
"This should not happen!\n", __func__, tm->cm_flags,
req->DevHandle);
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
goto bailout;
}
mps_dprint(sc, MPS_XINFO,
"%s: IOCStatus = 0x%x ResponseCode = 0x%x\n", __func__,
le16toh(resp->IOCStatus), le32toh(resp->ResponseCode));
if (le32toh(resp->ResponseCode) == MPI2_SCSITASKMGMT_RSP_TM_COMPLETE) {
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP);
mpssas_announce_reset(sc, AC_SENT_BDR, tm->cm_targ->tid,
CAM_LUN_WILDCARD);
}
else
mpssas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
bailout:
mpssas_free_tm(sc, tm);
xpt_done(ccb);
}
static void
mpssas_poll(struct cam_sim *sim)
{
struct mpssas_softc *sassc;
sassc = cam_sim_softc(sim);
if (sassc->sc->mps_debug & MPS_TRACE) {
/* frequent debug messages during a panic just slow
* everything down too much.
*/
mps_printf(sassc->sc, "%s clearing MPS_TRACE\n", __func__);
sassc->sc->mps_debug &= ~MPS_TRACE;
}
mps_intr_locked(sassc->sc);
}
static void
mpssas_async(void *callback_arg, uint32_t code, struct cam_path *path,
void *arg)
{
struct mps_softc *sc;
sc = (struct mps_softc *)callback_arg;
mps_lock(sc);
switch (code) {
case AC_ADVINFO_CHANGED: {
struct mpssas_target *target;
struct mpssas_softc *sassc;
struct scsi_read_capacity_data_long rcap_buf;
struct ccb_dev_advinfo cdai;
struct mpssas_lun *lun;
lun_id_t lunid;
int found_lun;
uintptr_t buftype;
buftype = (uintptr_t)arg;
found_lun = 0;
sassc = sc->sassc;
/*
* We're only interested in read capacity data changes.
*/
if (buftype != CDAI_TYPE_RCAPLONG)
break;
/*
* We should have a handle for this, but check to make sure.
*/
KASSERT(xpt_path_target_id(path) < sassc->maxtargets,
("Target %d out of bounds in mpssas_async\n",
xpt_path_target_id(path)));
target = &sassc->targets[xpt_path_target_id(path)];
if (target->handle == 0)
break;
lunid = xpt_path_lun_id(path);
SLIST_FOREACH(lun, &target->luns, lun_link) {
if (lun->lun_id == lunid) {
found_lun = 1;
break;
}
}
if (found_lun == 0) {
lun = malloc(sizeof(struct mpssas_lun), M_MPT2,
M_NOWAIT | M_ZERO);
if (lun == NULL) {
mps_dprint(sc, MPS_ERROR, "Unable to alloc "
"LUN for EEDP support.\n");
break;
}
lun->lun_id = lunid;
SLIST_INSERT_HEAD(&target->luns, lun, lun_link);
}
bzero(&rcap_buf, sizeof(rcap_buf));
bzero(&cdai, sizeof(cdai));
xpt_setup_ccb(&cdai.ccb_h, path, CAM_PRIORITY_NORMAL);
cdai.ccb_h.func_code = XPT_DEV_ADVINFO;
cdai.ccb_h.flags = CAM_DIR_IN;
cdai.buftype = CDAI_TYPE_RCAPLONG;
cdai.flags = CDAI_FLAG_NONE;
cdai.bufsiz = sizeof(rcap_buf);
cdai.buf = (uint8_t *)&rcap_buf;
xpt_action((union ccb *)&cdai);
if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(cdai.ccb_h.path,
0, 0, 0, FALSE);
if ((mpssas_get_ccbstatus((union ccb *)&cdai) == CAM_REQ_CMP)
&& (rcap_buf.prot & SRC16_PROT_EN)) {
switch (rcap_buf.prot & SRC16_P_TYPE) {
case SRC16_PTYPE_1:
case SRC16_PTYPE_3:
lun->eedp_formatted = TRUE;
lun->eedp_block_size =
scsi_4btoul(rcap_buf.length);
break;
case SRC16_PTYPE_2:
default:
lun->eedp_formatted = FALSE;
lun->eedp_block_size = 0;
break;
}
} else {
lun->eedp_formatted = FALSE;
lun->eedp_block_size = 0;
}
break;
}
default:
break;
}
mps_unlock(sc);
}
/*
* Freeze the devq and set the INRESET flag so that no I/O will be sent to
* the target until the reset has completed. The CCB holds the path which
* is used to release the devq. The devq is released and the CCB is freed
* when the TM completes.
* We only need to do this when we're entering reset, not at each time we
* need to send an abort (which will happen if multiple commands timeout
* while we're sending the abort). We do not release the queue for each
* command we complete (just at the end when we free the tm), so freezing
* it each time doesn't make sense.
*/
void
mpssas_prepare_for_tm(struct mps_softc *sc, struct mps_command *tm,
struct mpssas_target *target, lun_id_t lun_id)
{
union ccb *ccb;
path_id_t path_id;
ccb = xpt_alloc_ccb_nowait();
if (ccb) {
path_id = cam_sim_path(sc->sassc->sim);
if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, path_id,
target->tid, lun_id) != CAM_REQ_CMP) {
xpt_free_ccb(ccb);
} else {
tm->cm_ccb = ccb;
tm->cm_targ = target;
if ((target->flags & MPSSAS_TARGET_INRESET) == 0) {
mps_dprint(sc, MPS_XINFO | MPS_RECOVERY,
"%s: Freezing devq for target ID %d\n",
__func__, target->tid);
xpt_freeze_devq(ccb->ccb_h.path, 1);
target->flags |= MPSSAS_TARGET_INRESET;
}
}
}
}
int
mpssas_startup(struct mps_softc *sc)
{
/*
* Send the port enable message and set the wait_for_port_enable flag.
* This flag helps to keep the simq frozen until all discovery events
* are processed.
*/
sc->wait_for_port_enable = 1;
mpssas_send_portenable(sc);
return (0);
}
static int
mpssas_send_portenable(struct mps_softc *sc)
{
MPI2_PORT_ENABLE_REQUEST *request;
struct mps_command *cm;
MPS_FUNCTRACE(sc);
if ((cm = mps_alloc_command(sc)) == NULL)
return (EBUSY);
request = (MPI2_PORT_ENABLE_REQUEST *)cm->cm_req;
request->Function = MPI2_FUNCTION_PORT_ENABLE;
request->MsgFlags = 0;
request->VP_ID = 0;
cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
cm->cm_complete = mpssas_portenable_complete;
cm->cm_data = NULL;
cm->cm_sge = NULL;
mps_map_command(sc, cm);
mps_dprint(sc, MPS_XINFO,
"mps_send_portenable finished cm %p req %p complete %p\n",
cm, cm->cm_req, cm->cm_complete);
return (0);
}
static void
mpssas_portenable_complete(struct mps_softc *sc, struct mps_command *cm)
{
MPI2_PORT_ENABLE_REPLY *reply;
struct mpssas_softc *sassc;
MPS_FUNCTRACE(sc);
sassc = sc->sassc;
/*
* Currently there should be no way we can hit this case. It only
* happens when we have a failure to allocate chain frames, and
* port enable commands don't have S/G lists.
*/
if ((cm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) {
mps_dprint(sc, MPS_ERROR, "%s: cm_flags = %#x for port enable! "
"This should not happen!\n", __func__, cm->cm_flags);
}
reply = (MPI2_PORT_ENABLE_REPLY *)cm->cm_reply;
if (reply == NULL)
mps_dprint(sc, MPS_FAULT, "Portenable NULL reply\n");
else if (le16toh(reply->IOCStatus & MPI2_IOCSTATUS_MASK) !=
MPI2_IOCSTATUS_SUCCESS)
mps_dprint(sc, MPS_FAULT, "Portenable failed\n");
mps_free_command(sc, cm);
/*
* Get WarpDrive info after discovery is complete but before the scan
* starts. At this point, all devices are ready to be exposed to the
* OS. If devices should be hidden instead, take them out of the
* 'targets' array before the scan. The devinfo for a disk will have
* some info and a volume's will be 0. Use that to remove disks.
*/
mps_wd_config_pages(sc);
/*
* Done waiting for port enable to complete. Decrement the refcount.
* If refcount is 0, discovery is complete and a rescan of the bus can
* take place. Since the simq was explicitly frozen before port
* enable, it must be explicitly released here to keep the
* freeze/release count in sync.
*/
sc->wait_for_port_enable = 0;
sc->port_enable_complete = 1;
wakeup(&sc->port_enable_complete);
mpssas_startup_decrement(sassc);
}
int
mpssas_check_id(struct mpssas_softc *sassc, int id)
{
struct mps_softc *sc = sassc->sc;
char *ids;
char *name;
ids = &sc->exclude_ids[0];
while((name = strsep(&ids, ",")) != NULL) {
if (name[0] == '\0')
continue;
if (strtol(name, NULL, 0) == (long)id)
return (1);
}
return (0);
}
void
mpssas_realloc_targets(struct mps_softc *sc, int maxtargets)
{
struct mpssas_softc *sassc;
struct mpssas_lun *lun, *lun_tmp;
struct mpssas_target *targ;
int i;
sassc = sc->sassc;
/*
* The number of targets is based on IOC Facts, so free all of
* the allocated LUNs for each target and then the target buffer
* itself.
*/
for (i=0; i< maxtargets; i++) {
targ = &sassc->targets[i];
SLIST_FOREACH_SAFE(lun, &targ->luns, lun_link, lun_tmp) {
free(lun, M_MPT2);
}
}
free(sassc->targets, M_MPT2);
sassc->targets = malloc(sizeof(struct mpssas_target) * maxtargets,
M_MPT2, M_WAITOK|M_ZERO);
}
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