4c1cdd4a7c
commands have completed. It's not OK to force complete any pending commands before we send the REMOVE_DEVICE. Instead, make sure that all pending commands are complete before sending that. By trying to second guess the firmware here, we run the risk of completing commands twice, which leads to corruption. This removes the forced completion of commands introduced in r218811. So it's a partial backout of that commit, but replaces it with a more rebust mechanism. Either these commands will complete due to the TARGET RESET, or they will timeout and be aborted, but they will all complete. Add assert that all commands are complete to REMOVE_DEVICE completion routine. We attempt to assure this programatically, so we shouldn't have any commands in the queue because we've waited for them all. Any commands that make it into our action routine after we mark the target in removal will complete immediately with an error. When we're removing a target that's not a volume, advertise up the stack that it's actually gone, as opposed to having a transient selection error we should retry. Do this both in the action routine, and when we get a notification of an aborted command. We don't do this for volumes because the driver tries hard not to advertise to the OS a volume has disappeared. Apply these changes to both mpr and mps since they are based on quite similar designs. Discussed with: scottl@ Differential Revision: https://reviews.freebsd.org/D23768
176 lines
5.2 KiB
C
176 lines
5.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2011-2015 LSI Corp.
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* Copyright (c) 2013-2015 Avago Technologies
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Avago Technologies (LSI) MPT-Fusion Host Adapter FreeBSD
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*
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* $FreeBSD$
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*/
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struct mps_fw_event_work;
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struct mpssas_lun {
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SLIST_ENTRY(mpssas_lun) lun_link;
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lun_id_t lun_id;
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uint8_t eedp_formatted;
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uint32_t eedp_block_size;
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};
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struct mpssas_target {
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uint16_t handle;
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uint8_t linkrate;
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uint64_t devname;
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uint32_t devinfo;
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uint16_t encl_handle;
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uint16_t encl_slot;
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uint8_t flags;
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#define MPSSAS_TARGET_INABORT (1 << 0)
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#define MPSSAS_TARGET_INRESET (1 << 1)
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#define MPSSAS_TARGET_INDIAGRESET (1 << 2)
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#define MPSSAS_TARGET_INREMOVAL (1 << 3)
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#define MPS_TARGET_FLAGS_RAID_COMPONENT (1 << 4)
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#define MPS_TARGET_FLAGS_VOLUME (1 << 5)
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#define MPS_TARGET_IS_SATA_SSD (1 << 6)
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#define MPSSAS_TARGET_INRECOVERY (MPSSAS_TARGET_INABORT | \
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MPSSAS_TARGET_INRESET | MPSSAS_TARGET_INCHIPRESET)
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uint16_t tid;
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SLIST_HEAD(, mpssas_lun) luns;
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TAILQ_HEAD(, mps_command) commands;
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struct mps_command *tm;
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struct mps_command *pending_remove_tm;
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TAILQ_HEAD(, mps_command) timedout_commands;
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uint16_t exp_dev_handle;
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uint16_t phy_num;
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uint64_t sasaddr;
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uint16_t parent_handle;
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uint64_t parent_sasaddr;
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uint32_t parent_devinfo;
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uint64_t issued;
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uint64_t completed;
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unsigned int outstanding;
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unsigned int timeouts;
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unsigned int aborts;
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unsigned int logical_unit_resets;
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unsigned int target_resets;
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uint8_t stop_at_shutdown;
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uint8_t supports_SSU;
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};
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struct mpssas_softc {
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struct mps_softc *sc;
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u_int flags;
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#define MPSSAS_IN_DISCOVERY (1 << 0)
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#define MPSSAS_IN_STARTUP (1 << 1)
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#define MPSSAS_DISCOVERY_TIMEOUT_PENDING (1 << 2)
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#define MPSSAS_QUEUE_FROZEN (1 << 3)
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#define MPSSAS_SHUTDOWN (1 << 4)
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u_int maxtargets;
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struct mpssas_target *targets;
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struct cam_devq *devq;
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struct cam_sim *sim;
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struct cam_path *path;
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struct intr_config_hook sas_ich;
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struct callout discovery_callout;
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struct mps_event_handle *mpssas_eh;
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u_int startup_refcount;
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struct proc *sysctl_proc;
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struct taskqueue *ev_tq;
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struct task ev_task;
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TAILQ_HEAD(, mps_fw_event_work) ev_queue;
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};
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MALLOC_DECLARE(M_MPSSAS);
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/*
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* Abstracted so that the driver can be backwards and forwards compatible
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* with future versions of CAM that will provide this functionality.
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*/
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#define MPS_SET_LUN(lun, ccblun) \
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mpssas_set_lun(lun, ccblun)
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static __inline int
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mpssas_set_lun(uint8_t *lun, u_int ccblun)
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{
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uint64_t *newlun;
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newlun = (uint64_t *)lun;
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*newlun = 0;
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if (ccblun <= 0xff) {
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/* Peripheral device address method, LUN is 0 to 255 */
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lun[1] = ccblun;
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} else if (ccblun <= 0x3fff) {
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/* Flat space address method, LUN is <= 16383 */
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scsi_ulto2b(ccblun, lun);
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lun[0] |= 0x40;
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} else if (ccblun <= 0xffffff) {
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/* Extended flat space address method, LUN is <= 16777215 */
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scsi_ulto3b(ccblun, &lun[1]);
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/* Extended Flat space address method */
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lun[0] = 0xc0;
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/* Length = 1, i.e. LUN is 3 bytes long */
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lun[0] |= 0x10;
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/* Extended Address Method */
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lun[0] |= 0x02;
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} else {
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return (EINVAL);
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}
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return (0);
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}
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static __inline void
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mpssas_set_ccbstatus(union ccb *ccb, int status)
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{
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ccb->ccb_h.status &= ~CAM_STATUS_MASK;
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ccb->ccb_h.status |= status;
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}
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static __inline int
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mpssas_get_ccbstatus(union ccb *ccb)
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{
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return (ccb->ccb_h.status & CAM_STATUS_MASK);
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}
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#define MPS_SET_SINGLE_LUN(req, lun) \
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do { \
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bzero((req)->LUN, 8); \
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(req)->LUN[1] = lun; \
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} while(0)
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void mpssas_rescan_target(struct mps_softc *sc, struct mpssas_target *targ);
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void mpssas_discovery_end(struct mpssas_softc *sassc);
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void mpssas_prepare_for_tm(struct mps_softc *sc, struct mps_command *tm,
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struct mpssas_target *target, lun_id_t lun_id);
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void mpssas_startup_increment(struct mpssas_softc *sassc);
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void mpssas_startup_decrement(struct mpssas_softc *sassc);
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void mpssas_firmware_event_work(void *arg, int pending);
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int mpssas_check_id(struct mpssas_softc *sassc, int id);
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