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freebsd-dev/sys/dev/mpr/mpr_sas.c
Alexander Motin 8836496815 Introduce support of SCSI Command Priority. 
SAM-3 specification introduced concept of Task Priority, that was renamed
to Command Priority in SAM-4, and supported by all modern SCSI transports.
It provides 15 levels of relative priorities: 1 - highest, 15 - lowest and
0 - default.  SAT specification for SATA devices translates priorities 1-3
into NCQ high priority.

This change adds new "priority" field into empty spots of struct ccb_scsiio
and struct ccb_accept_tio of CAM and struct ctl_scsiio of CTL.  Respective
support is added into iscsi(4), isp(4), mpr(4), mps(4) and ocs_fc(4) drivers
for both initiator and where applicable target roles.  Minimal support was
added to CTL to receive the priority value from different frontends, pass it
between HA controllers and report in few places.

This patch does not add consumers of this functionality, so nothing should
really change yet, since the field is still set to 0 (default) on initiator
and not actively used on target.  Those are to be implemented separately.

I've confirmed priority working on WD Red SATA disks connected via mpr(4)
and properly transferred to CTL target via iscsi(4), isp(4) and ocs_fc(4).

While there, added missing tag_action support to ocs_fc(4) initiator role.

MFC after:	1 month
Relnotes:	yes
Sponsored by:	iXsystems, Inc.
2020-10-25 19:34:02 +00:00

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/*-
* Copyright (c) 2009 Yahoo! Inc.
* Copyright (c) 2011-2015 LSI Corp.
* Copyright (c) 2013-2016 Avago Technologies
* Copyright 2000-2020 Broadcom Inc.
* 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.
*
* Broadcom Inc. (LSI) MPT-Fusion Host Adapter FreeBSD
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/* Communications core for Avago Technologies (LSI) MPT3 */
/* TODO Move headers to mprvar */
#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_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/nvme/nvme.h>
#include <dev/mpr/mpi/mpi2_type.h>
#include <dev/mpr/mpi/mpi2.h>
#include <dev/mpr/mpi/mpi2_ioc.h>
#include <dev/mpr/mpi/mpi2_sas.h>
#include <dev/mpr/mpi/mpi2_pci.h>
#include <dev/mpr/mpi/mpi2_cnfg.h>
#include <dev/mpr/mpi/mpi2_init.h>
#include <dev/mpr/mpi/mpi2_tool.h>
#include <dev/mpr/mpr_ioctl.h>
#include <dev/mpr/mprvar.h>
#include <dev/mpr/mpr_table.h>
#include <dev/mpr/mpr_sas.h>
#define MPRSAS_DISCOVERY_TIMEOUT 20
#define MPRSAS_MAX_DISCOVERY_TIMEOUTS 10 /* 200 seconds */
/*
* 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_MPRSAS, "MPRSAS", "MPR SAS memory");
static void mprsas_remove_device(struct mpr_softc *, struct mpr_command *);
static void mprsas_remove_complete(struct mpr_softc *, struct mpr_command *);
static void mprsas_action(struct cam_sim *sim, union ccb *ccb);
static void mprsas_poll(struct cam_sim *sim);
static void mprsas_scsiio_timeout(void *data);
static void mprsas_abort_complete(struct mpr_softc *sc, struct mpr_command *cm);
static void mprsas_action_scsiio(struct mprsas_softc *, union ccb *);
static void mprsas_scsiio_complete(struct mpr_softc *, struct mpr_command *);
static void mprsas_action_resetdev(struct mprsas_softc *, union ccb *);
static void mprsas_resetdev_complete(struct mpr_softc *, struct mpr_command *);
static int mprsas_send_abort(struct mpr_softc *sc, struct mpr_command *tm,
struct mpr_command *cm);
static void mprsas_async(void *callback_arg, uint32_t code,
struct cam_path *path, void *arg);
static int mprsas_send_portenable(struct mpr_softc *sc);
static void mprsas_portenable_complete(struct mpr_softc *sc,
struct mpr_command *cm);
static void mprsas_smpio_complete(struct mpr_softc *sc, struct mpr_command *cm);
static void mprsas_send_smpcmd(struct mprsas_softc *sassc, union ccb *ccb,
uint64_t sasaddr);
static void mprsas_action_smpio(struct mprsas_softc *sassc, union ccb *ccb);
struct mprsas_target *
mprsas_find_target_by_handle(struct mprsas_softc *sassc, int start,
uint16_t handle)
{
struct mprsas_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
mprsas_startup_increment(struct mprsas_softc *sassc)
{
MPR_FUNCTRACE(sassc->sc);
if ((sassc->flags & MPRSAS_IN_STARTUP) != 0) {
if (sassc->startup_refcount++ == 0) {
/* just starting, freeze the simq */
mpr_dprint(sassc->sc, MPR_INIT,
"%s freezing simq\n", __func__);
xpt_hold_boot();
xpt_freeze_simq(sassc->sim, 1);
}
mpr_dprint(sassc->sc, MPR_INIT, "%s refcount %u\n", __func__,
sassc->startup_refcount);
}
}
void
mprsas_release_simq_reinit(struct mprsas_softc *sassc)
{
if (sassc->flags & MPRSAS_QUEUE_FROZEN) {
sassc->flags &= ~MPRSAS_QUEUE_FROZEN;
xpt_release_simq(sassc->sim, 1);
mpr_dprint(sassc->sc, MPR_INFO, "Unfreezing SIM queue\n");
}
}
void
mprsas_startup_decrement(struct mprsas_softc *sassc)
{
MPR_FUNCTRACE(sassc->sc);
if ((sassc->flags & MPRSAS_IN_STARTUP) != 0) {
if (--sassc->startup_refcount == 0) {
/* finished all discovery-related actions, release
* the simq and rescan for the latest topology.
*/
mpr_dprint(sassc->sc, MPR_INIT,
"%s releasing simq\n", __func__);
sassc->flags &= ~MPRSAS_IN_STARTUP;
xpt_release_simq(sassc->sim, 1);
xpt_release_boot();
}
mpr_dprint(sassc->sc, MPR_INIT, "%s refcount %u\n", __func__,
sassc->startup_refcount);
}
}
/*
* The firmware requires us to stop sending commands when we're doing task
* management.
* use.
* XXX The logic for serializing the device has been made lazy and moved to
* mprsas_prepare_for_tm().
*/
struct mpr_command *
mprsas_alloc_tm(struct mpr_softc *sc)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mpr_command *tm;
MPR_FUNCTRACE(sc);
tm = mpr_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
mprsas_free_tm(struct mpr_softc *sc, struct mpr_command *tm)
{
int target_id = 0xFFFFFFFF;
MPR_FUNCTRACE(sc);
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_targ != NULL) {
tm->cm_targ->flags &= ~MPRSAS_TARGET_INRESET;
target_id = tm->cm_targ->tid;
}
if (tm->cm_ccb) {
mpr_dprint(sc, MPR_INFO, "Unfreezing devq for target ID %d\n",
target_id);
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);
}
mpr_free_high_priority_command(sc, tm);
}
void
mprsas_rescan_target(struct mpr_softc *sc, struct mprsas_target *targ)
{
struct mprsas_softc *sassc = sc->sassc;
path_id_t pathid;
target_id_t targetid;
union ccb *ccb;
MPR_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) {
mpr_dprint(sc, MPR_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) {
mpr_dprint(sc, MPR_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;
mpr_dprint(sc, MPR_TRACE, "%s targetid %u\n", __func__, targetid);
xpt_rescan(ccb);
}
static void
mprsas_log_command(struct mpr_command *cm, u_int level, const char *fmt, ...)
{
struct sbuf sb;
va_list ap;
char str[224];
char path_str[64];
if (cm == NULL)
return;
/* No need to be in here if debugging isn't enabled */
if ((cm->cm_sc->mpr_debug & level) == 0)
return;
sbuf_new(&sb, str, sizeof(str), 0);
va_start(ap, fmt);
if (cm->cm_ccb != NULL) {
xpt_path_string(cm->cm_ccb->csio.ccb_h.path, path_str,
sizeof(path_str));
sbuf_cat(&sb, path_str);
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);
mpr_print_field(cm->cm_sc, "%s", sbuf_data(&sb));
va_end(ap);
}
static void
mprsas_remove_volume(struct mpr_softc *sc, struct mpr_command *tm)
{
MPI2_SCSI_TASK_MANAGE_REPLY *reply;
struct mprsas_target *targ;
uint16_t handle;
MPR_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? */
mpr_dprint(sc, MPR_FAULT, "%s NULL reply resetting device "
"0x%04x\n", __func__, handle);
mprsas_free_tm(sc, tm);
return;
}
if ((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) !=
MPI2_IOCSTATUS_SUCCESS) {
mpr_dprint(sc, MPR_ERROR, "IOCStatus = 0x%x while resetting "
"device 0x%x\n", le16toh(reply->IOCStatus), handle);
}
mpr_dprint(sc, MPR_XINFO, "Reset aborted %u commands\n",
le32toh(reply->TerminationCount));
mpr_free_reply(sc, tm->cm_reply_data);
tm->cm_reply = NULL; /* Ensures the reply won't get re-freed */
mpr_dprint(sc, MPR_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_level_valid = 0x0;
targ->encl_level = 0x0;
targ->connector_name[0] = ' ';
targ->connector_name[1] = ' ';
targ->connector_name[2] = ' ';
targ->connector_name[3] = ' ';
targ->encl_slot = 0x0;
targ->exp_dev_handle = 0x0;
targ->phy_num = 0x0;
targ->linkrate = 0x0;
targ->devinfo = 0x0;
targ->flags = 0x0;
targ->scsi_req_desc_type = 0;
}
mprsas_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
mprsas_prepare_volume_remove(struct mprsas_softc *sassc, uint16_t handle)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mpr_softc *sc;
struct mpr_command *cm;
struct mprsas_target *targ = NULL;
MPR_FUNCTRACE(sassc->sc);
sc = sassc->sc;
targ = mprsas_find_target_by_handle(sassc, 0, handle);
if (targ == NULL) {
/* FIXME: what is the action? */
/* We don't know about this device? */
mpr_dprint(sc, MPR_ERROR,
"%s %d : invalid handle 0x%x \n", __func__,__LINE__, handle);
return;
}
targ->flags |= MPRSAS_TARGET_INREMOVAL;
cm = mprsas_alloc_tm(sc);
if (cm == NULL) {
mpr_dprint(sc, MPR_ERROR,
"%s: command alloc failure\n", __func__);
return;
}
mprsas_rescan_target(sc, targ);
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)cm->cm_req;
req->DevHandle = targ->handle;
req->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
if (!targ->is_nvme || sc->custom_nvme_tm_handling) {
/* SAS Hard Link Reset / SATA Link Reset */
req->MsgFlags = MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET;
} else {
/* PCIe Protocol Level Reset*/
req->MsgFlags =
MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE;
}
cm->cm_targ = targ;
cm->cm_data = NULL;
cm->cm_complete = mprsas_remove_volume;
cm->cm_complete_data = (void *)(uintptr_t)handle;
mpr_dprint(sc, MPR_INFO, "%s: Sending reset for target ID %d\n",
__func__, targ->tid);
mprsas_prepare_for_tm(sc, cm, targ, CAM_LUN_WILDCARD);
mpr_map_command(sc, cm);
}
/*
* The 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 needs 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
mprsas_prepare_remove(struct mprsas_softc *sassc, uint16_t handle)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mpr_softc *sc;
struct mpr_command *tm;
struct mprsas_target *targ = NULL;
MPR_FUNCTRACE(sassc->sc);
sc = sassc->sc;
targ = mprsas_find_target_by_handle(sassc, 0, handle);
if (targ == NULL) {
/* FIXME: what is the action? */
/* We don't know about this device? */
mpr_dprint(sc, MPR_ERROR, "%s : invalid handle 0x%x \n",
__func__, handle);
return;
}
targ->flags |= MPRSAS_TARGET_INREMOVAL;
tm = mprsas_alloc_tm(sc);
if (tm == NULL) {
mpr_dprint(sc, MPR_ERROR, "%s: command alloc failure\n",
__func__);
return;
}
mprsas_rescan_target(sc, targ);
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_targ = targ;
tm->cm_data = NULL;
tm->cm_complete = mprsas_remove_device;
tm->cm_complete_data = (void *)(uintptr_t)handle;
mpr_dprint(sc, MPR_INFO, "%s: Sending reset for target ID %d\n",
__func__, targ->tid);
mprsas_prepare_for_tm(sc, tm, targ, CAM_LUN_WILDCARD);
mpr_map_command(sc, tm);
}
static void
mprsas_remove_device(struct mpr_softc *sc, struct mpr_command *tm)
{
MPI2_SCSI_TASK_MANAGE_REPLY *reply;
MPI2_SAS_IOUNIT_CONTROL_REQUEST *req;
struct mprsas_target *targ;
uint16_t handle;
MPR_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 & MPR_CM_FLAGS_ERROR_MASK) != 0) {
mpr_dprint(sc, MPR_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? */
mpr_dprint(sc, MPR_FAULT, "%s NULL reply resetting device "
"0x%04x\n", __func__, handle);
mprsas_free_tm(sc, tm);
return;
}
if ((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) !=
MPI2_IOCSTATUS_SUCCESS) {
mpr_dprint(sc, MPR_ERROR, "IOCStatus = 0x%x while resetting "
"device 0x%x\n", le16toh(reply->IOCStatus), handle);
}
mpr_dprint(sc, MPR_XINFO, "Reset aborted %u commands\n",
le32toh(reply->TerminationCount));
mpr_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 = mprsas_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) {
mpr_dprint(sc, MPR_INFO, "No pending commands: starting remove_device\n");
mpr_map_command(sc, tm);
targ->pending_remove_tm = NULL;
} else {
targ->pending_remove_tm = tm;
}
mpr_dprint(sc, MPR_INFO, "clearing target %u handle 0x%04x\n",
targ->tid, handle);
if (targ->encl_level_valid) {
mpr_dprint(sc, MPR_INFO, "At enclosure level %d, slot %d, "
"connector name (%4s)\n", targ->encl_level, targ->encl_slot,
targ->connector_name);
}
}
static void
mprsas_remove_complete(struct mpr_softc *sc, struct mpr_command *tm)
{
MPI2_SAS_IOUNIT_CONTROL_REPLY *reply;
uint16_t handle;
struct mprsas_target *targ;
struct mprsas_lun *lun;
MPR_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 & MPR_CM_FLAGS_ERROR_MASK) != 0) {
mpr_dprint(sc, MPR_XINFO, "%s: cm_flags = %#x for remove of "
"handle %#04x! This should not happen!\n", __func__,
tm->cm_flags, handle);
mprsas_free_tm(sc, tm);
return;
}
if (reply == NULL) {
/* most likely a chip reset */
mpr_dprint(sc, MPR_FAULT, "%s NULL reply removing device "
"0x%04x\n", __func__, handle);
mprsas_free_tm(sc, tm);
return;
}
mpr_dprint(sc, MPR_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_level_valid = 0x0;
targ->encl_level = 0x0;
targ->connector_name[0] = ' ';
targ->connector_name[1] = ' ';
targ->connector_name[2] = ' ';
targ->connector_name[3] = ' ';
targ->encl_slot = 0x0;
targ->exp_dev_handle = 0x0;
targ->phy_num = 0x0;
targ->linkrate = 0x0;
targ->devinfo = 0x0;
targ->flags = 0x0;
targ->scsi_req_desc_type = 0;
while (!SLIST_EMPTY(&targ->luns)) {
lun = SLIST_FIRST(&targ->luns);
SLIST_REMOVE_HEAD(&targ->luns, lun_link);
free(lun, M_MPR);
}
}
mprsas_free_tm(sc, tm);
}
static int
mprsas_register_events(struct mpr_softc *sc)
{
uint8_t events[16];
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_TEMP_THRESHOLD);
setbit(events, MPI2_EVENT_SAS_DEVICE_DISCOVERY_ERROR);
if (sc->facts->MsgVersion >= MPI2_VERSION_02_06) {
setbit(events, MPI2_EVENT_ACTIVE_CABLE_EXCEPTION);
if (sc->mpr_flags & MPR_FLAGS_GEN35_IOC) {
setbit(events, MPI2_EVENT_PCIE_DEVICE_STATUS_CHANGE);
setbit(events, MPI2_EVENT_PCIE_ENUMERATION);
setbit(events, MPI2_EVENT_PCIE_TOPOLOGY_CHANGE_LIST);
}
}
mpr_register_events(sc, events, mprsas_evt_handler, NULL,
&sc->sassc->mprsas_eh);
return (0);
}
int
mpr_attach_sas(struct mpr_softc *sc)
{
struct mprsas_softc *sassc;
cam_status status;
int unit, error = 0, reqs;
MPR_FUNCTRACE(sc);
mpr_dprint(sc, MPR_INIT, "%s entered\n", __func__);
sassc = malloc(sizeof(struct mprsas_softc), M_MPR, 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 mprsas_target) *
sassc->maxtargets, M_MPR, 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) {
mpr_dprint(sc, MPR_INIT|MPR_ERROR, "Cannot allocate SIMQ\n");
error = ENOMEM;
goto out;
}
unit = device_get_unit(sc->mpr_dev);
sassc->sim = cam_sim_alloc(mprsas_action, mprsas_poll, "mpr", sassc,
unit, &sc->mpr_mtx, reqs, reqs, sassc->devq);
if (sassc->sim == NULL) {
mpr_dprint(sc, MPR_INIT|MPR_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, mprsas_firmware_event_work, sc);
sassc->ev_tq = taskqueue_create("mpr_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->mpr_dev));
mpr_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->mpr_dev, 0)) != 0) {
mpr_dprint(sc, MPR_INIT|MPR_ERROR,
"Error %d registering SCSI bus\n", error);
mpr_unlock(sc);
goto out;
}
/*
* Assume that discovery events will start right away.
*
* Hold off boot until discovery is complete.
*/
sassc->flags |= MPRSAS_IN_STARTUP | MPRSAS_IN_DISCOVERY;
sc->sassc->startup_refcount = 0;
mprsas_startup_increment(sassc);
callout_init(&sassc->discovery_callout, 1 /*mpsafe*/);
/*
* 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) {
mpr_dprint(sc, MPR_INIT|MPR_ERROR,
"Error %#x creating sim path\n", status);
sassc->path = NULL;
} else {
int event;
event = AC_ADVINFO_CHANGED | AC_FOUND_DEVICE;
status = xpt_register_async(event, mprsas_async, sc,
sassc->path);
if (status != CAM_REQ_CMP) {
mpr_dprint(sc, MPR_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.
*/
mpr_printf(sc, "EEDP capabilities disabled.\n");
}
mpr_unlock(sc);
mprsas_register_events(sc);
out:
if (error)
mpr_detach_sas(sc);
mpr_dprint(sc, MPR_INIT, "%s exit, error= %d\n", __func__, error);
return (error);
}
int
mpr_detach_sas(struct mpr_softc *sc)
{
struct mprsas_softc *sassc;
struct mprsas_lun *lun, *lun_tmp;
struct mprsas_target *targ;
int i;
MPR_FUNCTRACE(sc);
if (sc->sassc == NULL)
return (0);
sassc = sc->sassc;
mpr_deregister_events(sc, sassc->mprsas_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);
/* Make sure CAM doesn't wedge if we had to bail out early. */
mpr_lock(sc);
while (sassc->startup_refcount != 0)
mprsas_startup_decrement(sassc);
/* Deregister our async handler */
if (sassc->path != NULL) {
xpt_register_async(0, mprsas_async, sc, sassc->path);
xpt_free_path(sassc->path);
sassc->path = NULL;
}
if (sassc->flags & MPRSAS_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);
}
mpr_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_MPR);
}
}
free(sassc->targets, M_MPR);
free(sassc, M_MPR);
sc->sassc = NULL;
return (0);
}
void
mprsas_discovery_end(struct mprsas_softc *sassc)
{
struct mpr_softc *sc = sassc->sc;
MPR_FUNCTRACE(sc);
if (sassc->flags & MPRSAS_DISCOVERY_TIMEOUT_PENDING)
callout_stop(&sassc->discovery_callout);
/*
* 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) {
mpr_dprint(sc, MPR_XINFO | MPR_MAPPING, "Discovery has "
"completed. Check for missing devices in the mapping "
"table.\n");
callout_reset(&sc->device_check_callout,
MPR_MISSING_CHECK_DELAY * hz, mpr_mapping_check_devices,
sc);
}
}
static void
mprsas_action(struct cam_sim *sim, union ccb *ccb)
{
struct mprsas_softc *sassc;
sassc = cam_sim_softc(sim);
MPR_FUNCTRACE(sassc->sc);
mpr_dprint(sassc->sc, MPR_TRACE, "ccb func_code 0x%x\n",
ccb->ccb_h.func_code);
mtx_assert(&sassc->sc->mpr_mtx, MA_OWNED);
switch (ccb->ccb_h.func_code) {
case XPT_PATH_INQ:
{
struct ccb_pathinq *cpi = &ccb->cpi;
struct mpr_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);
/*
* XXXSLM-I think this needs to change based on config page or
* something instead of hardcoded to 150000.
*/
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;
mprsas_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 mprsas_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_TRAN_SETTINGS\n",
cts->ccb_h.target_id));
targ = &sassc->targets[cts->ccb_h.target_id];
if (targ->handle == 0x0) {
mprsas_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;
case 0x0b:
sas->bitrate = 1200000;
break;
default:
sas->valid = 0;
}
cts->protocol = PROTO_SCSI;
scsi->valid = CTS_SCSI_VALID_TQ;
scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
break;
}
case XPT_CALC_GEOMETRY:
cam_calc_geometry(&ccb->ccg, /*extended*/1);
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
break;
case XPT_RESET_DEV:
mpr_dprint(sassc->sc, MPR_XINFO, "mprsas_action "
"XPT_RESET_DEV\n");
mprsas_action_resetdev(sassc, ccb);
return;
case XPT_RESET_BUS:
case XPT_ABORT:
case XPT_TERM_IO:
mpr_dprint(sassc->sc, MPR_XINFO, "mprsas_action faking success "
"for abort or reset\n");
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
break;
case XPT_SCSI_IO:
mprsas_action_scsiio(sassc, ccb);
return;
case XPT_SMP_IO:
mprsas_action_smpio(sassc, ccb);
return;
default:
mprsas_set_ccbstatus(ccb, CAM_FUNC_NOTAVAIL);
break;
}
xpt_done(ccb);
}
static void
mprsas_announce_reset(struct mpr_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;
mpr_dprint(sc, MPR_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) {
mpr_dprint(sc, MPR_ERROR, "unable to create path for reset "
"notification\n");
return;
}
xpt_async(ac_code, path, NULL);
xpt_free_path(path);
}
static void
mprsas_complete_all_commands(struct mpr_softc *sc)
{
struct mpr_command *cm;
int i;
int completed;
MPR_FUNCTRACE(sc);
mtx_assert(&sc->mpr_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 == MPR_CM_STATE_FREE)
continue;
cm->cm_state = MPR_CM_STATE_BUSY;
cm->cm_reply = NULL;
completed = 0;
if (cm->cm_flags & MPR_CM_FLAGS_SATA_ID_TIMEOUT) {
MPASS(cm->cm_data);
free(cm->cm_data, M_MPR);
cm->cm_data = NULL;
}
if (cm->cm_flags & MPR_CM_FLAGS_POLLED)
cm->cm_flags |= MPR_CM_FLAGS_COMPLETE;
if (cm->cm_complete != NULL) {
mprsas_log_command(cm, MPR_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 & MPR_CM_FLAGS_WAKEUP) {
mprsas_log_command(cm, MPR_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 != MPR_CM_STATE_FREE)) {
/* this should never happen, but if it does, log */
mprsas_log_command(cm, MPR_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
mprsas_handle_reinit(struct mpr_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.
*/
mpr_dprint(sc, MPR_INIT, "%s startup\n", __func__);
sc->sassc->flags |= MPRSAS_IN_STARTUP;
sc->sassc->flags |= MPRSAS_IN_DISCOVERY;
mprsas_startup_increment(sc->sassc);
/* notify CAM of a bus reset */
mprsas_announce_reset(sc, AC_BUS_RESET, CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD);
/* complete and cleanup after all outstanding commands */
mprsas_complete_all_commands(sc);
mpr_dprint(sc, MPR_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)
mpr_dprint(sc, MPR_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 = MPRSAS_TARGET_INDIAGRESET;
}
}
static void
mprsas_tm_timeout(void *data)
{
struct mpr_command *tm = data;
struct mpr_softc *sc = tm->cm_sc;
mtx_assert(&sc->mpr_mtx, MA_OWNED);
mprsas_log_command(tm, MPR_INFO|MPR_RECOVERY, "task mgmt %p timed "
"out\n", tm);
KASSERT(tm->cm_state == MPR_CM_STATE_INQUEUE,
("command not inqueue\n"));
tm->cm_state = MPR_CM_STATE_BUSY;
mpr_reinit(sc);
}
static void
mprsas_logical_unit_reset_complete(struct mpr_softc *sc, struct mpr_command *tm)
{
MPI2_SCSI_TASK_MANAGE_REPLY *reply;
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
unsigned int cm_count = 0;
struct mpr_command *cm;
struct mprsas_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 & MPR_CM_FLAGS_ERROR_MASK) != 0) {
mpr_dprint(sc, MPR_RECOVERY|MPR_ERROR,
"%s: cm_flags = %#x for LUN reset! "
"This should not happen!\n", __func__, tm->cm_flags);
mprsas_free_tm(sc, tm);
return;
}
if (reply == NULL) {
mpr_dprint(sc, MPR_RECOVERY, "NULL reset reply for tm %p\n",
tm);
if ((sc->mpr_flags & MPR_FLAGS_DIAGRESET) != 0) {
/* this completion was due to a reset, just cleanup */
mpr_dprint(sc, MPR_RECOVERY, "Hardware undergoing "
"reset, ignoring NULL LUN reset reply\n");
targ->tm = NULL;
mprsas_free_tm(sc, tm);
}
else {
/* we should have gotten a reply. */
mpr_dprint(sc, MPR_INFO|MPR_RECOVERY, "NULL reply on "
"LUN reset attempt, resetting controller\n");
mpr_reinit(sc);
}
return;
}
mpr_dprint(sc, MPR_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) {
mpr_dprint(sc, MPR_RECOVERY|MPR_INFO,
"Finished recovery after LUN reset for target %u\n",
targ->tid);
mprsas_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) {
mpr_dprint(sc, MPR_INFO|MPR_RECOVERY,
"More commands to abort for target %u\n", targ->tid);
mprsas_send_abort(sc, tm, cm);
} else {
targ->tm = NULL;
mprsas_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.
*/
mpr_dprint(sc, MPR_INFO|MPR_RECOVERY,
"logical unit reset complete for target %u, but still "
"have %u command(s), sending target reset\n", targ->tid,
cm_count);
if (!targ->is_nvme || sc->custom_nvme_tm_handling)
mprsas_send_reset(sc, tm,
MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET);
else
mpr_reinit(sc);
}
}
static void
mprsas_target_reset_complete(struct mpr_softc *sc, struct mpr_command *tm)
{
MPI2_SCSI_TASK_MANAGE_REPLY *reply;
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mprsas_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 & MPR_CM_FLAGS_ERROR_MASK) != 0) {
mpr_dprint(sc, MPR_ERROR, "%s: cm_flags = %#x for target "
"reset! This should not happen!\n", __func__, tm->cm_flags);
mprsas_free_tm(sc, tm);
return;
}
if (reply == NULL) {
mpr_dprint(sc, MPR_RECOVERY,
"NULL target reset reply for tm %p TaskMID %u\n",
tm, le16toh(req->TaskMID));
if ((sc->mpr_flags & MPR_FLAGS_DIAGRESET) != 0) {
/* this completion was due to a reset, just cleanup */
mpr_dprint(sc, MPR_RECOVERY, "Hardware undergoing "
"reset, ignoring NULL target reset reply\n");
targ->tm = NULL;
mprsas_free_tm(sc, tm);
}
else {
/* we should have gotten a reply. */
mpr_dprint(sc, MPR_INFO|MPR_RECOVERY, "NULL reply on "
"target reset attempt, resetting controller\n");
mpr_reinit(sc);
}
return;
}
mpr_dprint(sc, MPR_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.
*/
mpr_dprint(sc, MPR_RECOVERY|MPR_INFO,
"Finished reset recovery for target %u\n", targ->tid);
mprsas_announce_reset(sc, AC_SENT_BDR, tm->cm_targ->tid,
CAM_LUN_WILDCARD);
targ->tm = NULL;
mprsas_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.
*/
mpr_dprint(sc, MPR_INFO|MPR_RECOVERY,
"Target reset complete for target %u, but still have %u "
"command(s), resetting controller\n", targ->tid,
targ->outstanding);
mpr_reinit(sc);
}
}
#define MPR_RESET_TIMEOUT 30
int
mprsas_send_reset(struct mpr_softc *sc, struct mpr_command *tm, uint8_t type)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mprsas_target *target;
int err, timeout;
target = tm->cm_targ;
if (target->handle == 0) {
mpr_dprint(sc, MPR_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 (!target->is_nvme || sc->custom_nvme_tm_handling) {
timeout = MPR_RESET_TIMEOUT;
/*
* Target reset method =
* SAS Hard Link Reset / SATA Link Reset
*/
req->MsgFlags = MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET;
} else {
timeout = (target->controller_reset_timeout) ? (
target->controller_reset_timeout) : (MPR_RESET_TIMEOUT);
/* PCIe Protocol Level Reset*/
req->MsgFlags =
MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE;
}
if (type == MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET) {
/* XXX Need to handle invalid LUNs */
MPR_SET_LUN(req->LUN, tm->cm_lun);
tm->cm_targ->logical_unit_resets++;
mpr_dprint(sc, MPR_RECOVERY|MPR_INFO,
"Sending logical unit reset to target %u lun %d\n",
target->tid, tm->cm_lun);
tm->cm_complete = mprsas_logical_unit_reset_complete;
mprsas_prepare_for_tm(sc, tm, target, tm->cm_lun);
} else if (type == MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET) {
tm->cm_targ->target_resets++;
mpr_dprint(sc, MPR_RECOVERY|MPR_INFO,
"Sending target reset to target %u\n", target->tid);
tm->cm_complete = mprsas_target_reset_complete;
mprsas_prepare_for_tm(sc, tm, target, CAM_LUN_WILDCARD);
}
else {
mpr_dprint(sc, MPR_ERROR, "unexpected reset type 0x%x\n", type);
return -1;
}
if (target->encl_level_valid) {
mpr_dprint(sc, MPR_RECOVERY|MPR_INFO,
"At enclosure level %d, slot %d, connector name (%4s)\n",
target->encl_level, target->encl_slot,
target->connector_name);
}
tm->cm_data = NULL;
tm->cm_complete_data = (void *)tm;
callout_reset(&tm->cm_callout, timeout * hz,
mprsas_tm_timeout, tm);
err = mpr_map_command(sc, tm);
if (err)
mpr_dprint(sc, MPR_ERROR|MPR_RECOVERY,
"error %d sending reset type %u\n", err, type);
return err;
}
static void
mprsas_abort_complete(struct mpr_softc *sc, struct mpr_command *tm)
{
struct mpr_command *cm;
MPI2_SCSI_TASK_MANAGE_REPLY *reply;
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mprsas_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 & MPR_CM_FLAGS_ERROR_MASK) != 0) {
mpr_dprint(sc, MPR_RECOVERY|MPR_ERROR,
"cm_flags = %#x for abort %p TaskMID %u!\n",
tm->cm_flags, tm, le16toh(req->TaskMID));
mprsas_free_tm(sc, tm);
return;
}
if (reply == NULL) {
mpr_dprint(sc, MPR_RECOVERY,
"NULL abort reply for tm %p TaskMID %u\n",
tm, le16toh(req->TaskMID));
if ((sc->mpr_flags & MPR_FLAGS_DIAGRESET) != 0) {
/* this completion was due to a reset, just cleanup */
mpr_dprint(sc, MPR_RECOVERY, "Hardware undergoing "
"reset, ignoring NULL abort reply\n");
targ->tm = NULL;
mprsas_free_tm(sc, tm);
} else {
/* we should have gotten a reply. */
mpr_dprint(sc, MPR_INFO|MPR_RECOVERY, "NULL reply on "
"abort attempt, resetting controller\n");
mpr_reinit(sc);
}
return;
}
mpr_dprint(sc, MPR_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.
*/
mpr_dprint(sc, MPR_INFO|MPR_RECOVERY,
"Finished abort recovery for target %u\n", targ->tid);
targ->tm = NULL;
mprsas_free_tm(sc, tm);
} else if (le16toh(req->TaskMID) != cm->cm_desc.Default.SMID) {
/* abort success, but we have more timedout commands to abort */
mpr_dprint(sc, MPR_INFO|MPR_RECOVERY,
"Continuing abort recovery for target %u\n", targ->tid);
mprsas_send_abort(sc, tm, cm);
} else {
/*
* we didn't get a command completion, so the abort
* failed as far as we're concerned. escalate.
*/
mpr_dprint(sc, MPR_INFO|MPR_RECOVERY,
"Abort failed for target %u, sending logical unit reset\n",
targ->tid);
mprsas_send_reset(sc, tm,
MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET);
}
}
#define MPR_ABORT_TIMEOUT 5
static int
mprsas_send_abort(struct mpr_softc *sc, struct mpr_command *tm,
struct mpr_command *cm)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mprsas_target *targ;
int err, timeout;
targ = cm->cm_targ;
if (targ->handle == 0) {
mpr_dprint(sc, MPR_ERROR|MPR_RECOVERY,
"%s null devhandle for target_id %d\n",
__func__, cm->cm_ccb->ccb_h.target_id);
return -1;
}
mprsas_log_command(cm, MPR_RECOVERY|MPR_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 */
MPR_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 = mprsas_abort_complete;
tm->cm_complete_data = (void *)tm;
tm->cm_targ = cm->cm_targ;
tm->cm_lun = cm->cm_lun;
if (!targ->is_nvme || sc->custom_nvme_tm_handling)
timeout = MPR_ABORT_TIMEOUT;
else
timeout = sc->nvme_abort_timeout;
callout_reset(&tm->cm_callout, timeout * hz,
mprsas_tm_timeout, tm);
targ->aborts++;
mprsas_prepare_for_tm(sc, tm, targ, tm->cm_lun);
err = mpr_map_command(sc, tm);
if (err)
mpr_dprint(sc, MPR_ERROR|MPR_RECOVERY,
"error %d sending abort for cm %p SMID %u\n",
err, cm, req->TaskMID);
return err;
}
static void
mprsas_scsiio_timeout(void *data)
{
sbintime_t elapsed, now;
union ccb *ccb;
struct mpr_softc *sc;
struct mpr_command *cm;
struct mprsas_target *targ;
cm = (struct mpr_command *)data;
sc = cm->cm_sc;
ccb = cm->cm_ccb;
now = sbinuptime();
MPR_FUNCTRACE(sc);
mtx_assert(&sc->mpr_mtx, MA_OWNED);
mpr_dprint(sc, MPR_XINFO|MPR_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.
*/
mpr_intr_locked(sc);
if (cm->cm_flags & MPR_CM_FLAGS_ON_RECOVERY) {
mprsas_log_command(cm, MPR_XINFO,
"SCSI command %p almost timed out\n", cm);
return;
}
if (cm->cm_ccb == NULL) {
mpr_dprint(sc, MPR_ERROR, "command timeout with NULL ccb\n");
return;
}
targ = cm->cm_targ;
targ->timeouts++;
elapsed = now - ccb->ccb_h.qos.sim_data;
mprsas_log_command(cm, MPR_INFO|MPR_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);
if (targ->encl_level_valid) {
mpr_dprint(sc, MPR_INFO|MPR_RECOVERY,
"At enclosure level %d, slot %d, connector name (%4s)\n",
targ->encl_level, targ->encl_slot, targ->connector_name);
}
/* XXX first, check the firmware state, to see if it's still
* operational. if not, do a diag reset.
*/
mprsas_set_ccbstatus(cm->cm_ccb, CAM_CMD_TIMEOUT);
cm->cm_flags |= MPR_CM_FLAGS_ON_RECOVERY | MPR_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.
*/
mpr_dprint(sc, MPR_RECOVERY, "queued timedout cm %p for "
"processing by tm %p\n", cm, targ->tm);
}
else if ((targ->tm = mprsas_alloc_tm(sc)) != NULL) {
/* start recovery by aborting the first timedout command */
mpr_dprint(sc, MPR_RECOVERY|MPR_INFO,
"Sending abort to target %u for SMID %d\n", targ->tid,
cm->cm_desc.Default.SMID);
mpr_dprint(sc, MPR_RECOVERY, "timedout cm %p allocated tm %p\n",
cm, targ->tm);
mprsas_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.
*/
mpr_dprint(sc, MPR_ERROR|MPR_RECOVERY,
"timedout cm %p failed to allocate a tm\n", cm);
}
}
/**
* mprsas_build_nvme_unmap - Build Native NVMe DSM command equivalent
* to SCSI Unmap.
* Return 0 - for success,
* 1 - to immediately return back the command with success status to CAM
* negative value - to fallback to firmware path i.e. issue scsi unmap
* to FW without any translation.
*/
static int
mprsas_build_nvme_unmap(struct mpr_softc *sc, struct mpr_command *cm,
union ccb *ccb, struct mprsas_target *targ)
{
Mpi26NVMeEncapsulatedRequest_t *req = NULL;
struct ccb_scsiio *csio;
struct unmap_parm_list *plist;
struct nvme_dsm_range *nvme_dsm_ranges = NULL;
struct nvme_command *c;
int i, res;
uint16_t ndesc, list_len, data_length;
struct mpr_prp_page *prp_page_info;
uint64_t nvme_dsm_ranges_dma_handle;
csio = &ccb->csio;
list_len = (scsiio_cdb_ptr(csio)[7] << 8 | scsiio_cdb_ptr(csio)[8]);
if (!list_len) {
mpr_dprint(sc, MPR_ERROR, "Parameter list length is Zero\n");
return -EINVAL;
}
plist = malloc(csio->dxfer_len, M_MPR, M_ZERO|M_NOWAIT);
if (!plist) {
mpr_dprint(sc, MPR_ERROR, "Unable to allocate memory to "
"save UNMAP data\n");
return -ENOMEM;
}
/* Copy SCSI unmap data to a local buffer */
bcopy(csio->data_ptr, plist, csio->dxfer_len);
/* return back the unmap command to CAM with success status,
* if number of descripts is zero.
*/
ndesc = be16toh(plist->unmap_blk_desc_data_len) >> 4;
if (!ndesc) {
mpr_dprint(sc, MPR_XINFO, "Number of descriptors in "
"UNMAP cmd is Zero\n");
res = 1;
goto out;
}
data_length = ndesc * sizeof(struct nvme_dsm_range);
if (data_length > targ->MDTS) {
mpr_dprint(sc, MPR_ERROR, "data length: %d is greater than "
"Device's MDTS: %d\n", data_length, targ->MDTS);
res = -EINVAL;
goto out;
}
prp_page_info = mpr_alloc_prp_page(sc);
KASSERT(prp_page_info != NULL, ("%s: There is no PRP Page for "
"UNMAP command.\n", __func__));
/*
* Insert the allocated PRP page into the command's PRP page list. This
* will be freed when the command is freed.
*/
TAILQ_INSERT_TAIL(&cm->cm_prp_page_list, prp_page_info, prp_page_link);
nvme_dsm_ranges = (struct nvme_dsm_range *)prp_page_info->prp_page;
nvme_dsm_ranges_dma_handle = prp_page_info->prp_page_busaddr;
bzero(nvme_dsm_ranges, data_length);
/* Convert SCSI unmap's descriptor data to NVMe DSM specific Range data
* for each descriptors contained in SCSI UNMAP data.
*/
for (i = 0; i < ndesc; i++) {
nvme_dsm_ranges[i].length =
htole32(be32toh(plist->desc[i].nlb));
nvme_dsm_ranges[i].starting_lba =
htole64(be64toh(plist->desc[i].slba));
nvme_dsm_ranges[i].attributes = 0;
}
/* Build MPI2.6's NVMe Encapsulated Request Message */
req = (Mpi26NVMeEncapsulatedRequest_t *)cm->cm_req;
bzero(req, sizeof(*req));
req->DevHandle = htole16(targ->handle);
req->Function = MPI2_FUNCTION_NVME_ENCAPSULATED;
req->Flags = MPI26_NVME_FLAGS_WRITE;
req->ErrorResponseBaseAddress.High =
htole32((uint32_t)((uint64_t)cm->cm_sense_busaddr >> 32));
req->ErrorResponseBaseAddress.Low =
htole32(cm->cm_sense_busaddr);
req->ErrorResponseAllocationLength =
htole16(sizeof(struct nvme_completion));
req->EncapsulatedCommandLength =
htole16(sizeof(struct nvme_command));
req->DataLength = htole32(data_length);
/* Build NVMe DSM command */
c = (struct nvme_command *) req->NVMe_Command;
c->opc = NVME_OPC_DATASET_MANAGEMENT;
c->nsid = htole32(csio->ccb_h.target_lun + 1);
c->cdw10 = htole32(ndesc - 1);
c->cdw11 = htole32(NVME_DSM_ATTR_DEALLOCATE);
cm->cm_length = data_length;
cm->cm_data = NULL;
cm->cm_complete = mprsas_scsiio_complete;
cm->cm_complete_data = ccb;
cm->cm_targ = targ;
cm->cm_lun = csio->ccb_h.target_lun;
cm->cm_ccb = ccb;
cm->cm_desc.Default.RequestFlags =
MPI26_REQ_DESCRIPT_FLAGS_PCIE_ENCAPSULATED;
csio->ccb_h.qos.sim_data = sbinuptime();
callout_reset_sbt(&cm->cm_callout, SBT_1MS * ccb->ccb_h.timeout, 0,
mprsas_scsiio_timeout, cm, 0);
targ->issued++;
targ->outstanding++;
TAILQ_INSERT_TAIL(&targ->commands, cm, cm_link);
ccb->ccb_h.status |= CAM_SIM_QUEUED;
mprsas_log_command(cm, MPR_XINFO, "%s cm %p ccb %p outstanding %u\n",
__func__, cm, ccb, targ->outstanding);
mpr_build_nvme_prp(sc, cm, req,
(void *)(uintptr_t)nvme_dsm_ranges_dma_handle, 0, data_length);
mpr_map_command(sc, cm);
out:
free(plist, M_MPR);
return 0;
}
static void
mprsas_action_scsiio(struct mprsas_softc *sassc, union ccb *ccb)
{
MPI2_SCSI_IO_REQUEST *req;
struct ccb_scsiio *csio;
struct mpr_softc *sc;
struct mprsas_target *targ;
struct mprsas_lun *lun;
struct mpr_command *cm;
uint8_t i, lba_byte, *ref_tag_addr, scsi_opcode;
uint16_t eedp_flags;
uint32_t mpi_control;
int rc;
sc = sassc->sc;
MPR_FUNCTRACE(sc);
mtx_assert(&sc->mpr_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];
mpr_dprint(sc, MPR_TRACE, "ccb %p target flag %x\n", ccb, targ->flags);
if (targ->handle == 0x0) {
mpr_dprint(sc, MPR_ERROR, "%s NULL handle for target %u\n",
__func__, csio->ccb_h.target_id);
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
xpt_done(ccb);
return;
}
if (targ->flags & MPR_TARGET_FLAGS_RAID_COMPONENT) {
mpr_dprint(sc, MPR_ERROR, "%s Raid component no SCSI IO "
"supported %u\n", __func__, csio->ccb_h.target_id);
mprsas_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 (mprsas_get_ccbstatus(ccb) != CAM_REQ_INPROG) {
mpr_dprint(sc, MPR_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 & MPRSAS_TARGET_INREMOVAL) {
if (targ->devinfo == 0)
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
else
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
xpt_done(ccb);
return;
}
if ((sc->mpr_flags & MPR_FLAGS_SHUTDOWN) != 0) {
mpr_dprint(sc, MPR_INFO, "%s shutting down\n", __func__);
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
xpt_done(ccb);
return;
}
/*
* If target has a reset in progress, freeze the devq and return. The
* devq will be released when the TM reset is finished.
*/
if (targ->flags & MPRSAS_TARGET_INRESET) {
ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN;
mpr_dprint(sc, MPR_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 = mpr_alloc_command(sc);
if (cm == NULL || (sc->mpr_flags & MPR_FLAGS_DIAGRESET)) {
if (cm != NULL) {
mpr_free_command(sc, cm);
}
if ((sassc->flags & MPRSAS_QUEUE_FROZEN) == 0) {
xpt_freeze_simq(sassc->sim, 1);
sassc->flags |= MPRSAS_QUEUE_FROZEN;
}
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
ccb->ccb_h.status |= CAM_REQUEUE_REQ;
xpt_done(ccb);
return;
}
/* For NVME device's issue UNMAP command directly to NVME drives by
* constructing equivalent native NVMe DataSetManagement command.
*/
scsi_opcode = scsiio_cdb_ptr(csio)[0];
if (scsi_opcode == UNMAP &&
targ->is_nvme &&
(csio->ccb_h.flags & CAM_DATA_MASK) == CAM_DATA_VADDR) {
rc = mprsas_build_nvme_unmap(sc, cm, ccb, targ);
if (rc == 1) { /* return command to CAM with success status */
mpr_free_command(sc, cm);
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
xpt_done(ccb);
return;
} else if (!rc) /* Issued NVMe Encapsulated Request Message */
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 = MPR_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 |= MPR_CM_FLAGS_DATAIN;
break;
case CAM_DIR_OUT:
mpi_control = MPI2_SCSIIO_CONTROL_WRITE;
cm->cm_flags |= MPR_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_CMDPRI_SHIFT) &
MPI2_SCSIIO_CONTROL_CMDPRI_MASK;
mpi_control |= sc->mapping_table[csio->ccb_h.target_id].TLR_bits;
req->Control = htole32(mpi_control);
if (MPR_SET_LUN(req->LUN, csio->ccb_h.target_lun) != 0) {
mpr_free_command(sc, cm);
mprsas_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 {
KASSERT(csio->cdb_len <= IOCDBLEN,
("cdb_len %d is greater than IOCDBLEN but CAM_CDB_POINTER "
"is not set", csio->cdb_len));
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);
if (sc->mpr_flags & MPR_FLAGS_GEN35_IOC) {
eedp_flags |=
MPI25_SCSIIO_EEDPFLAGS_APPTAG_DISABLE_MODE;
}
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 |= MPR_CM_FLAGS_USE_CCB;
} else {
cm->cm_data = NULL;
}
cm->cm_sge = &req->SGL;
cm->cm_sglsize = (32 - 24) * 4;
cm->cm_complete = mprsas_scsiio_complete;
cm->cm_complete_data = ccb;
cm->cm_targ = targ;
cm->cm_lun = csio->ccb_h.target_lun;
cm->cm_ccb = ccb;
/*
* If using FP desc type, need to set a bit in IoFlags (SCSI IO is 0)
* and set descriptor type.
*/
if (targ->scsi_req_desc_type ==
MPI25_REQ_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO) {
req->IoFlags |= MPI25_SCSIIO_IOFLAGS_FAST_PATH;
cm->cm_desc.FastPathSCSIIO.RequestFlags =
MPI25_REQ_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO;
if (!sc->atomic_desc_capable) {
cm->cm_desc.FastPathSCSIIO.DevHandle =
htole16(targ->handle);
}
} else {
cm->cm_desc.SCSIIO.RequestFlags =
MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
if (!sc->atomic_desc_capable)
cm->cm_desc.SCSIIO.DevHandle = htole16(targ->handle);
}
csio->ccb_h.qos.sim_data = sbinuptime();
callout_reset_sbt(&cm->cm_callout, SBT_1MS * ccb->ccb_h.timeout, 0,
mprsas_scsiio_timeout, cm, 0);
targ->issued++;
targ->outstanding++;
TAILQ_INSERT_TAIL(&targ->commands, cm, cm_link);
ccb->ccb_h.status |= CAM_SIM_QUEUED;
mprsas_log_command(cm, MPR_XINFO, "%s cm %p ccb %p outstanding %u\n",
__func__, cm, ccb, targ->outstanding);
mpr_map_command(sc, cm);
return;
}
/**
* mpr_sc_failed_io_info - translated non-succesfull SCSI_IO request
*/
static void
mpr_sc_failed_io_info(struct mpr_softc *sc, struct ccb_scsiio *csio,
Mpi2SCSIIOReply_t *mpi_reply, struct mprsas_target *targ)
{
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;
char *desc_ioc_state = NULL;
char *desc_scsi_status = NULL;
u32 log_info = le32toh(mpi_reply->IOCLogInfo);
if (log_info == 0x31170000)
return;
desc_ioc_state = mpr_describe_table(mpr_iocstatus_string,
ioc_status);
desc_scsi_status = mpr_describe_table(mpr_scsi_status_string,
scsi_status);
mpr_dprint(sc, MPR_XINFO, "\thandle(0x%04x), ioc_status(%s)(0x%04x)\n",
le16toh(mpi_reply->DevHandle), desc_ioc_state, ioc_status);
if (targ->encl_level_valid) {
mpr_dprint(sc, MPR_XINFO, "At enclosure level %d, slot %d, "
"connector name (%4s)\n", targ->encl_level, targ->encl_slot,
targ->connector_name);
}
/*
* We can add more detail about underflow data here
* TO-DO
*/
mpr_dprint(sc, MPR_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->mpr_debug & MPR_XINFO &&
scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
mpr_dprint(sc, MPR_XINFO, "-> Sense Buffer Data : Start :\n");
scsi_sense_print(csio);
mpr_dprint(sc, MPR_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;
mpr_dprint(sc, MPR_XINFO, "response code(0x%01x): %s\n",
response_bytes[0],
mpr_describe_table(mpr_scsi_taskmgmt_string,
response_bytes[0]));
}
}
/** mprsas_nvme_trans_status_code
*
* Convert Native NVMe command error status to
* equivalent SCSI error status.
*
* Returns appropriate scsi_status
*/
static u8
mprsas_nvme_trans_status_code(uint16_t nvme_status,
struct mpr_command *cm)
{
u8 status = MPI2_SCSI_STATUS_GOOD;
int skey, asc, ascq;
union ccb *ccb = cm->cm_complete_data;
int returned_sense_len;
uint8_t sct, sc;
sct = NVME_STATUS_GET_SCT(nvme_status);
sc = NVME_STATUS_GET_SC(nvme_status);
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_ILLEGAL_REQUEST;
asc = SCSI_ASC_NO_SENSE;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
switch (sct) {
case NVME_SCT_GENERIC:
switch (sc) {
case NVME_SC_SUCCESS:
status = MPI2_SCSI_STATUS_GOOD;
skey = SSD_KEY_NO_SENSE;
asc = SCSI_ASC_NO_SENSE;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_INVALID_OPCODE:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_ILLEGAL_REQUEST;
asc = SCSI_ASC_ILLEGAL_COMMAND;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_INVALID_FIELD:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_ILLEGAL_REQUEST;
asc = SCSI_ASC_INVALID_CDB;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_DATA_TRANSFER_ERROR:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_MEDIUM_ERROR;
asc = SCSI_ASC_NO_SENSE;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_ABORTED_POWER_LOSS:
status = MPI2_SCSI_STATUS_TASK_ABORTED;
skey = SSD_KEY_ABORTED_COMMAND;
asc = SCSI_ASC_WARNING;
ascq = SCSI_ASCQ_POWER_LOSS_EXPECTED;
break;
case NVME_SC_INTERNAL_DEVICE_ERROR:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_HARDWARE_ERROR;
asc = SCSI_ASC_INTERNAL_TARGET_FAILURE;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_ABORTED_BY_REQUEST:
case NVME_SC_ABORTED_SQ_DELETION:
case NVME_SC_ABORTED_FAILED_FUSED:
case NVME_SC_ABORTED_MISSING_FUSED:
status = MPI2_SCSI_STATUS_TASK_ABORTED;
skey = SSD_KEY_ABORTED_COMMAND;
asc = SCSI_ASC_NO_SENSE;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_INVALID_NAMESPACE_OR_FORMAT:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_ILLEGAL_REQUEST;
asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID;
ascq = SCSI_ASCQ_INVALID_LUN_ID;
break;
case NVME_SC_LBA_OUT_OF_RANGE:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_ILLEGAL_REQUEST;
asc = SCSI_ASC_ILLEGAL_BLOCK;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_CAPACITY_EXCEEDED:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_MEDIUM_ERROR;
asc = SCSI_ASC_NO_SENSE;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_NAMESPACE_NOT_READY:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_NOT_READY;
asc = SCSI_ASC_LUN_NOT_READY;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
}
break;
case NVME_SCT_COMMAND_SPECIFIC:
switch (sc) {
case NVME_SC_INVALID_FORMAT:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_ILLEGAL_REQUEST;
asc = SCSI_ASC_FORMAT_COMMAND_FAILED;
ascq = SCSI_ASCQ_FORMAT_COMMAND_FAILED;
break;
case NVME_SC_CONFLICTING_ATTRIBUTES:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_ILLEGAL_REQUEST;
asc = SCSI_ASC_INVALID_CDB;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
}
break;
case NVME_SCT_MEDIA_ERROR:
switch (sc) {
case NVME_SC_WRITE_FAULTS:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_MEDIUM_ERROR;
asc = SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_UNRECOVERED_READ_ERROR:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_MEDIUM_ERROR;
asc = SCSI_ASC_UNRECOVERED_READ_ERROR;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_GUARD_CHECK_ERROR:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_MEDIUM_ERROR;
asc = SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED;
ascq = SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED;
break;
case NVME_SC_APPLICATION_TAG_CHECK_ERROR:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_MEDIUM_ERROR;
asc = SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED;
ascq = SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED;
break;
case NVME_SC_REFERENCE_TAG_CHECK_ERROR:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_MEDIUM_ERROR;
asc = SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED;
ascq = SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED;
break;
case NVME_SC_COMPARE_FAILURE:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_MISCOMPARE;
asc = SCSI_ASC_MISCOMPARE_DURING_VERIFY;
ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
break;
case NVME_SC_ACCESS_DENIED:
status = MPI2_SCSI_STATUS_CHECK_CONDITION;
skey = SSD_KEY_ILLEGAL_REQUEST;
asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID;
ascq = SCSI_ASCQ_INVALID_LUN_ID;
break;
}
break;
}
returned_sense_len = 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;
scsi_set_sense_data(&ccb->csio.sense_data, SSD_TYPE_FIXED,
1, skey, asc, ascq, SSD_ELEM_NONE);
ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
return status;
}
/** mprsas_complete_nvme_unmap
*
* Complete native NVMe command issued using NVMe Encapsulated
* Request Message.
*/
static u8
mprsas_complete_nvme_unmap(struct mpr_softc *sc, struct mpr_command *cm)
{
Mpi26NVMeEncapsulatedErrorReply_t *mpi_reply;
struct nvme_completion *nvme_completion = NULL;
u8 scsi_status = MPI2_SCSI_STATUS_GOOD;
mpi_reply =(Mpi26NVMeEncapsulatedErrorReply_t *)cm->cm_reply;
if (le16toh(mpi_reply->ErrorResponseCount)){
nvme_completion = (struct nvme_completion *)cm->cm_sense;
scsi_status = mprsas_nvme_trans_status_code(
nvme_completion->status, cm);
}
return scsi_status;
}
static void
mprsas_scsiio_complete(struct mpr_softc *sc, struct mpr_command *cm)
{
MPI2_SCSI_IO_REPLY *rep;
union ccb *ccb;
struct ccb_scsiio *csio;
struct mprsas_softc *sassc;
struct scsi_vpd_supported_page_list *vpd_list = NULL;
u8 *TLR_bits, TLR_on, *scsi_cdb;
int dir = 0, i;
u16 alloc_len;
struct mprsas_target *target;
target_id_t target_id;
MPR_FUNCTRACE(sc);
mpr_dprint(sc, MPR_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->mpr_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 & MPR_CM_FLAGS_DATAIN)
dir = BUS_DMASYNC_POSTREAD;
else if (cm->cm_flags & MPR_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 (cm->cm_flags & MPR_CM_FLAGS_ON_RECOVERY) {
TAILQ_REMOVE(&cm->cm_targ->timedout_commands, cm, cm_recovery);
KASSERT(cm->cm_state == MPR_CM_STATE_BUSY,
("Not busy for CM_FLAGS_TIMEDOUT: %d\n", cm->cm_state));
cm->cm_flags &= ~MPR_CM_FLAGS_ON_RECOVERY;
if (cm->cm_reply != NULL)
mprsas_log_command(cm, MPR_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
mprsas_log_command(cm, MPR_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)
mprsas_log_command(cm, MPR_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
mprsas_log_command(cm, MPR_RECOVERY,
"completed cm %p ccb %p during recovery\n",
cm, cm->cm_ccb);
} else if ((sc->mpr_flags & MPR_FLAGS_DIAGRESET) != 0) {
mprsas_log_command(cm, MPR_RECOVERY,
"reset completed cm %p ccb %p\n", cm, cm->cm_ccb);
}
if ((cm->cm_flags & MPR_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.
*/
mprsas_set_ccbstatus(ccb, CAM_REQUEUE_REQ);
/*
* Currently the only error included in the mask is
* MPR_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 & MPRSAS_QUEUE_FROZEN) == 0) {
xpt_freeze_simq(sassc->sim, 1);
sassc->flags |= MPRSAS_QUEUE_FROZEN;
mpr_dprint(sc, MPR_XINFO, "Error sending command, "
"freezing SIM queue\n");
}
}
/*
* Point to the SCSI CDB, which is dependent on the CAM_CDB_POINTER
* flag, and use it in a few places in the rest of this function for
* convenience. Use the macro if available.
*/
scsi_cdb = scsiio_cdb_ptr(csio);
/*
* 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 && (scsi_cdb[0] == START_STOP_UNIT)) {
mpr_dprint(sc, MPR_INFO, "Decrementing SSU count.\n");
sc->SSU_refcount--;
}
/* Take the fast path to completion */
if (cm->cm_reply == NULL) {
if (mprsas_get_ccbstatus(ccb) == CAM_REQ_INPROG) {
if ((sc->mpr_flags & MPR_FLAGS_DIAGRESET) != 0)
mprsas_set_ccbstatus(ccb, CAM_SCSI_BUS_RESET);
else {
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
csio->scsi_status = SCSI_STATUS_OK;
}
if (sassc->flags & MPRSAS_QUEUE_FROZEN) {
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
sassc->flags &= ~MPRSAS_QUEUE_FROZEN;
mpr_dprint(sc, MPR_XINFO,
"Unfreezing SIM queue\n");
}
}
/*
* There are two scenarios where the status won't be
* CAM_REQ_CMP. The first is if MPR_CM_FLAGS_ERROR_MASK is
* set, the second is in the MPR_FLAGS_DIAGRESET above.
*/
if (mprsas_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);
}
mpr_free_command(sc, cm);
xpt_done(ccb);
return;
}
target = &sassc->targets[target_id];
if (scsi_cdb[0] == UNMAP &&
target->is_nvme &&
(csio->ccb_h.flags & CAM_DATA_MASK) == CAM_DATA_VADDR) {
rep->SCSIStatus = mprsas_complete_nvme_unmap(sc, cm);
csio->scsi_status = rep->SCSIStatus;
}
mprsas_log_command(cm, MPR_XINFO,
"ioc %x scsi %x state %x xfer %u\n",
le16toh(rep->IOCStatus), rep->SCSIStatus, rep->SCSIState,
le32toh(rep->TransferCount));
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)
mprsas_log_command(cm, MPR_XINFO, "recovered error\n");
/* Completion failed at the transport level. */
if (rep->SCSIState & (MPI2_SCSI_STATE_NO_SCSI_STATUS |
MPI2_SCSI_STATE_TERMINATED)) {
mprsas_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) {
mprsas_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)
== MPR_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)) {
mprsas_set_ccbstatus(ccb, CAM_REQ_ABORTED);
break;
}
/* Handle normal status and sense */
csio->scsi_status = rep->SCSIStatus;
if (rep->SCSIStatus == MPI2_SCSI_STATUS_GOOD)
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
else
mprsas_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 < csio->sense_len)
csio->sense_resid = csio->sense_len -
returned_sense_len;
else
csio->sense_resid = 0;
sense_len = min(returned_sense_len,
csio->sense_len - csio->sense_resid);
bzero(&csio->sense_data, sizeof(csio->sense_data));
bcopy(cm->cm_sense, &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 ((scsi_cdb[0] == INQUIRY) &&
(scsi_cdb[1] & SI_EVPD) &&
(scsi_cdb[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)scsi_cdb[3] << 8) + scsi_cdb[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 ((scsi_cdb[0] == INQUIRY) &&
(csio->data_ptr != NULL) &&
((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;
mpr_dprint(sc, MPR_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)
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
else
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
break;
case MPI2_IOCSTATUS_INVALID_SGL:
mpr_print_scsiio_cmd(sc, cm);
mprsas_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 & MPR_CM_FLAGS_TIMEDOUT)
mprsas_set_ccbstatus(ccb, CAM_CMD_TIMEOUT);
else
mprsas_set_ccbstatus(ccb, CAM_REQ_ABORTED);
break;
case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
/* resid is ignored for this condition */
csio->resid = 0;
mprsas_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 & MPRSAS_TARGET_INREMOVAL)
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
else
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
mpr_dprint(sc, MPR_INFO,
"Controller reported %s tgt %u SMID %u loginfo %x%s\n",
mpr_describe_table(mpr_iocstatus_string,
le16toh(rep->IOCStatus) & MPI2_IOCSTATUS_MASK),
target_id, cm->cm_desc.Default.SMID,
le32toh(rep->IOCLogInfo),
(cm->cm_targ->flags & MPRSAS_TARGET_INREMOVAL) ? " departing" : "");
mpr_dprint(sc, MPR_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:
mprsas_log_command(cm, MPR_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;
if (scsi_cdb[0] == UNMAP &&
target->is_nvme &&
(csio->ccb_h.flags & CAM_DATA_MASK) == CAM_DATA_VADDR)
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
else
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
break;
}
mpr_sc_failed_io_info(sc, csio, rep, cm->cm_targ);
if (sassc->flags & MPRSAS_QUEUE_FROZEN) {
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
sassc->flags &= ~MPRSAS_QUEUE_FROZEN;
mpr_dprint(sc, MPR_XINFO, "Command completed, unfreezing SIM "
"queue\n");
}
if (mprsas_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 & MPRSAS_TARGET_INREMOVAL) {
if (TAILQ_FIRST(&cm->cm_targ->commands) == NULL &&
cm->cm_targ->pending_remove_tm != NULL) {
mpr_dprint(sc, MPR_INFO, "Last pending command complete: starting remove_device\n");
mpr_map_command(sc, cm->cm_targ->pending_remove_tm);
cm->cm_targ->pending_remove_tm = NULL;
}
}
mpr_free_command(sc, cm);
xpt_done(ccb);
}
static void
mprsas_smpio_complete(struct mpr_softc *sc, struct mpr_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 & MPR_CM_FLAGS_ERROR_MASK) != 0) {
mpr_dprint(sc, MPR_ERROR, "%s: cm_flags = %#x on SMP "
"request!\n", __func__, cm->cm_flags);
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
goto bailout;
}
rpl = (MPI2_SMP_PASSTHROUGH_REPLY *)cm->cm_reply;
if (rpl == NULL) {
mpr_dprint(sc, MPR_ERROR, "%s: NULL cm_reply!\n", __func__);
mprsas_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) {
mpr_dprint(sc, MPR_XINFO, "%s: IOCStatus %04x SASStatus %02x\n",
__func__, le16toh(rpl->IOCStatus), rpl->SASStatus);
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
goto bailout;
}
mpr_dprint(sc, MPR_XINFO, "%s: SMP request to SAS address %#jx "
"completed successfully\n", __func__, (uintmax_t)sasaddr);
if (ccb->smpio.smp_response[2] == SMP_FR_ACCEPTED)
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
else
mprsas_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);
mpr_free_command(sc, cm);
xpt_done(ccb);
}
static void
mprsas_send_smpcmd(struct mprsas_softc *sassc, union ccb *ccb, uint64_t sasaddr)
{
struct mpr_command *cm;
uint8_t *request, *response;
MPI2_SMP_PASSTHROUGH_REQUEST *req;
struct mpr_softc *sc;
struct sglist *sg;
int error;
sc = sassc->sc;
sg = NULL;
error = 0;
switch (ccb->ccb_h.flags & CAM_DATA_MASK) {
case CAM_DATA_PADDR:
case CAM_DATA_SG_PADDR:
/*
* XXX We don't yet support physical addresses here.
*/
mpr_dprint(sc, MPR_ERROR, "%s: physical addresses not "
"supported\n", __func__);
mprsas_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)) {
mpr_dprint(sc, MPR_ERROR, "%s: multiple request or "
"response buffer segments not supported for SMP\n",
__func__);
mprsas_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:
mprsas_set_ccbstatus(ccb, CAM_REQ_INVALID);
xpt_done(ccb);
return;
}
cm = mpr_alloc_command(sc);
if (cm == NULL) {
mpr_dprint(sc, MPR_ERROR, "%s: cannot allocate command\n",
__func__);
mprsas_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;
mpr_dprint(sc, MPR_XINFO, "%s: sending SMP request to SAS address "
"%#jx\n", __func__, (uintmax_t)sasaddr);
mpr_init_sge(cm, req, &req->SGL);
/*
* Set up a uio to pass into mpr_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 mpr_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 = mprsas_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 mpr_data_cb()) to handle the bidirectional
* transfer.
*/
cm->cm_flags |= MPR_CM_FLAGS_USE_UIO | MPR_CM_FLAGS_SMP_PASS |
MPR_CM_FLAGS_DATAIN | MPR_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 = mpr_map_command(sc, cm);
if ((error != 0) && (error != EINPROGRESS)) {
mpr_dprint(sc, MPR_ERROR, "%s: error %d returned from "
"mpr_map_command()\n", __func__, error);
goto bailout_error;
}
return;
bailout_error:
mpr_free_command(sc, cm);
mprsas_set_ccbstatus(ccb, CAM_RESRC_UNAVAIL);
xpt_done(ccb);
return;
}
static void
mprsas_action_smpio(struct mprsas_softc *sassc, union ccb *ccb)
{
struct mpr_softc *sc;
struct mprsas_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) {
mpr_dprint(sc, MPR_ERROR, "%s: target %d does not exist!\n",
__func__, ccb->ccb_h.target_id);
mprsas_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_MPR_PROBE
struct mprsas_target *parent_target;
#endif
if (targ->parent_handle == 0x0) {
mpr_dprint(sc, MPR_ERROR, "%s: handle %d does not have "
"a valid parent handle!\n", __func__, targ->handle);
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
#ifdef OLD_MPR_PROBE
parent_target = mprsas_find_target_by_handle(sassc, 0,
targ->parent_handle);
if (parent_target == NULL) {
mpr_dprint(sc, MPR_ERROR, "%s: handle %d does not have "
"a valid parent target!\n", __func__, targ->handle);
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
if ((parent_target->devinfo &
MPI2_SAS_DEVICE_INFO_SMP_TARGET) == 0) {
mpr_dprint(sc, MPR_ERROR, "%s: handle %d parent %d "
"does not have an SMP target!\n", __func__,
targ->handle, parent_target->handle);
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
sasaddr = parent_target->sasaddr;
#else /* OLD_MPR_PROBE */
if ((targ->parent_devinfo &
MPI2_SAS_DEVICE_INFO_SMP_TARGET) == 0) {
mpr_dprint(sc, MPR_ERROR, "%s: handle %d parent %d "
"does not have an SMP target!\n", __func__,
targ->handle, targ->parent_handle);
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
if (targ->parent_sasaddr == 0x0) {
mpr_dprint(sc, MPR_ERROR, "%s: handle %d parent handle "
"%d does not have a valid SAS address!\n", __func__,
targ->handle, targ->parent_handle);
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
sasaddr = targ->parent_sasaddr;
#endif /* OLD_MPR_PROBE */
}
if (sasaddr == 0) {
mpr_dprint(sc, MPR_INFO, "%s: unable to find SAS address for "
"handle %d\n", __func__, targ->handle);
mprsas_set_ccbstatus(ccb, CAM_DEV_NOT_THERE);
goto bailout;
}
mprsas_send_smpcmd(sassc, ccb, sasaddr);
return;
bailout:
xpt_done(ccb);
}
static void
mprsas_action_resetdev(struct mprsas_softc *sassc, union ccb *ccb)
{
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
struct mpr_softc *sc;
struct mpr_command *tm;
struct mprsas_target *targ;
MPR_FUNCTRACE(sassc->sc);
mtx_assert(&sassc->sc->mpr_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 = mprsas_alloc_tm(sc);
if (tm == NULL) {
mpr_dprint(sc, MPR_ERROR, "command alloc failure in "
"mprsas_action_resetdev\n");
mprsas_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;
if (!targ->is_nvme || sc->custom_nvme_tm_handling) {
/* SAS Hard Link Reset / SATA Link Reset */
req->MsgFlags = MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET;
} else {
/* PCIe Protocol Level Reset*/
req->MsgFlags =
MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE;
}
tm->cm_data = NULL;
tm->cm_complete = mprsas_resetdev_complete;
tm->cm_complete_data = ccb;
mpr_dprint(sc, MPR_INFO, "%s: Sending reset for target ID %d\n",
__func__, targ->tid);
tm->cm_targ = targ;
mprsas_prepare_for_tm(sc, tm, targ, CAM_LUN_WILDCARD);
mpr_map_command(sc, tm);
}
static void
mprsas_resetdev_complete(struct mpr_softc *sc, struct mpr_command *tm)
{
MPI2_SCSI_TASK_MANAGE_REPLY *resp;
union ccb *ccb;
MPR_FUNCTRACE(sc);
mtx_assert(&sc->mpr_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 & MPR_CM_FLAGS_ERROR_MASK) != 0) {
MPI2_SCSI_TASK_MANAGE_REQUEST *req;
req = (MPI2_SCSI_TASK_MANAGE_REQUEST *)tm->cm_req;
mpr_dprint(sc, MPR_ERROR, "%s: cm_flags = %#x for reset of "
"handle %#04x! This should not happen!\n", __func__,
tm->cm_flags, req->DevHandle);
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
goto bailout;
}
mpr_dprint(sc, MPR_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) {
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP);
mprsas_announce_reset(sc, AC_SENT_BDR, tm->cm_targ->tid,
CAM_LUN_WILDCARD);
}
else
mprsas_set_ccbstatus(ccb, CAM_REQ_CMP_ERR);
bailout:
mprsas_free_tm(sc, tm);
xpt_done(ccb);
}
static void
mprsas_poll(struct cam_sim *sim)
{
struct mprsas_softc *sassc;
sassc = cam_sim_softc(sim);
if (sassc->sc->mpr_debug & MPR_TRACE) {
/* frequent debug messages during a panic just slow
* everything down too much.
*/
mpr_dprint(sassc->sc, MPR_XINFO, "%s clearing MPR_TRACE\n",
__func__);
sassc->sc->mpr_debug &= ~MPR_TRACE;
}
mpr_intr_locked(sassc->sc);
}
static void
mprsas_async(void *callback_arg, uint32_t code, struct cam_path *path,
void *arg)
{
struct mpr_softc *sc;
sc = (struct mpr_softc *)callback_arg;
switch (code) {
case AC_ADVINFO_CHANGED: {
struct mprsas_target *target;
struct mprsas_softc *sassc;
struct scsi_read_capacity_data_long rcap_buf;
struct ccb_dev_advinfo cdai;
struct mprsas_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 mprsas_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 mprsas_lun), M_MPR,
M_NOWAIT | M_ZERO);
if (lun == NULL) {
mpr_dprint(sc, MPR_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));
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 ((mprsas_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;
}
case AC_FOUND_DEVICE:
default:
break;
}
}
/*
* Set the INRESET flag for this target so that no I/O will be sent to
* the target until the reset has completed. If an I/O request does
* happen, the devq will be frozen. 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.
*/
void
mprsas_prepare_for_tm(struct mpr_softc *sc, struct mpr_command *tm,
struct mprsas_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;
target->flags |= MPRSAS_TARGET_INRESET;
}
}
}
int
mprsas_startup(struct mpr_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;
mprsas_send_portenable(sc);
return (0);
}
static int
mprsas_send_portenable(struct mpr_softc *sc)
{
MPI2_PORT_ENABLE_REQUEST *request;
struct mpr_command *cm;
MPR_FUNCTRACE(sc);
if ((cm = mpr_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 = mprsas_portenable_complete;
cm->cm_data = NULL;
cm->cm_sge = NULL;
mpr_map_command(sc, cm);
mpr_dprint(sc, MPR_XINFO,
"mpr_send_portenable finished cm %p req %p complete %p\n",
cm, cm->cm_req, cm->cm_complete);
return (0);
}
static void
mprsas_portenable_complete(struct mpr_softc *sc, struct mpr_command *cm)
{
MPI2_PORT_ENABLE_REPLY *reply;
struct mprsas_softc *sassc;
MPR_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 & MPR_CM_FLAGS_ERROR_MASK) != 0) {
mpr_dprint(sc, MPR_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)
mpr_dprint(sc, MPR_FAULT, "Portenable NULL reply\n");
else if (le16toh(reply->IOCStatus & MPI2_IOCSTATUS_MASK) !=
MPI2_IOCSTATUS_SUCCESS)
mpr_dprint(sc, MPR_FAULT, "Portenable failed\n");
mpr_free_command(sc, cm);
/*
* 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.
*/
sc->wait_for_port_enable = 0;
sc->port_enable_complete = 1;
wakeup(&sc->port_enable_complete);
mprsas_startup_decrement(sassc);
}
int
mprsas_check_id(struct mprsas_softc *sassc, int id)
{
struct mpr_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
mprsas_realloc_targets(struct mpr_softc *sc, int maxtargets)
{
struct mprsas_softc *sassc;
struct mprsas_lun *lun, *lun_tmp;
struct mprsas_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_MPR);
}
}
free(sassc->targets, M_MPR);
sassc->targets = malloc(sizeof(struct mprsas_target) * maxtargets,
M_MPR, M_WAITOK|M_ZERO);
}
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