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fe8391035a
Obtained from: Netflix MFC after: 3 days
2688 lines
78 KiB
C
2688 lines
78 KiB
C
/*-
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* Copyright (c) 2009 Yahoo! Inc.
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* Copyright (c) 2012 LSI Corp.
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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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* LSI MPT-Fusion Host Adapter FreeBSD
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/* Communications core for LSI MPT2 */
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/* TODO Move headers to mpsvar */
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/selinfo.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/bio.h>
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#include <sys/malloc.h>
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#include <sys/uio.h>
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#include <sys/sysctl.h>
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#include <sys/queue.h>
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#include <sys/kthread.h>
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#include <sys/taskqueue.h>
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#include <sys/endian.h>
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#include <sys/eventhandler.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <sys/proc.h>
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#include <dev/pci/pcivar.h>
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#include <cam/cam.h>
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#include <cam/scsi/scsi_all.h>
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#include <dev/mps/mpi/mpi2_type.h>
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#include <dev/mps/mpi/mpi2.h>
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#include <dev/mps/mpi/mpi2_ioc.h>
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#include <dev/mps/mpi/mpi2_sas.h>
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#include <dev/mps/mpi/mpi2_cnfg.h>
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#include <dev/mps/mpi/mpi2_init.h>
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#include <dev/mps/mpi/mpi2_tool.h>
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#include <dev/mps/mps_ioctl.h>
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#include <dev/mps/mpsvar.h>
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#include <dev/mps/mps_table.h>
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#include <dev/mps/mps_sas.h>
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static int mps_diag_reset(struct mps_softc *sc, int sleep_flag);
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static int mps_init_queues(struct mps_softc *sc);
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static int mps_message_unit_reset(struct mps_softc *sc, int sleep_flag);
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static int mps_transition_operational(struct mps_softc *sc);
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static int mps_iocfacts_allocate(struct mps_softc *sc, uint8_t attaching);
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static void mps_iocfacts_free(struct mps_softc *sc);
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static void mps_startup(void *arg);
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static int mps_send_iocinit(struct mps_softc *sc);
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static int mps_alloc_queues(struct mps_softc *sc);
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static int mps_alloc_replies(struct mps_softc *sc);
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static int mps_alloc_requests(struct mps_softc *sc);
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static int mps_attach_log(struct mps_softc *sc);
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static __inline void mps_complete_command(struct mps_softc *sc,
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struct mps_command *cm);
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static void mps_dispatch_event(struct mps_softc *sc, uintptr_t data,
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MPI2_EVENT_NOTIFICATION_REPLY *reply);
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static void mps_config_complete(struct mps_softc *sc, struct mps_command *cm);
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static void mps_periodic(void *);
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static int mps_reregister_events(struct mps_softc *sc);
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static void mps_enqueue_request(struct mps_softc *sc, struct mps_command *cm);
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static int mps_get_iocfacts(struct mps_softc *sc, MPI2_IOC_FACTS_REPLY *facts);
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static int mps_wait_db_ack(struct mps_softc *sc, int timeout, int sleep_flag);
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SYSCTL_NODE(_hw, OID_AUTO, mps, CTLFLAG_RD, 0, "MPS Driver Parameters");
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MALLOC_DEFINE(M_MPT2, "mps", "mpt2 driver memory");
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/*
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* Do a "Diagnostic Reset" aka a hard reset. This should get the chip out of
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* any state and back to its initialization state machine.
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*/
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static char mpt2_reset_magic[] = { 0x00, 0x0f, 0x04, 0x0b, 0x02, 0x07, 0x0d };
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/* Added this union to smoothly convert le64toh cm->cm_desc.Words.
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* Compiler only support unint64_t to be passed as argument.
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* Otherwise it will through below error
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* "aggregate value used where an integer was expected"
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*/
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typedef union _reply_descriptor {
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u64 word;
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struct {
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u32 low;
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u32 high;
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} u;
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}reply_descriptor,address_descriptor;
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/* Rate limit chain-fail messages to 1 per minute */
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static struct timeval mps_chainfail_interval = { 60, 0 };
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/*
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* sleep_flag can be either CAN_SLEEP or NO_SLEEP.
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* If this function is called from process context, it can sleep
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* and there is no harm to sleep, in case if this fuction is called
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* from Interrupt handler, we can not sleep and need NO_SLEEP flag set.
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* based on sleep flags driver will call either msleep, pause or DELAY.
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* msleep and pause are of same variant, but pause is used when mps_mtx
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* is not hold by driver.
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*
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*/
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static int
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mps_diag_reset(struct mps_softc *sc,int sleep_flag)
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{
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uint32_t reg;
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int i, error, tries = 0;
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mps_dprint(sc, MPS_TRACE, "%s\n", __func__);
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/* Clear any pending interrupts */
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mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0);
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/*Force NO_SLEEP for threads prohibited to sleep
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* e.a Thread from interrupt handler are prohibited to sleep.
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*/
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if (curthread->td_no_sleeping != 0)
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sleep_flag = NO_SLEEP;
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/* Push the magic sequence */
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error = ETIMEDOUT;
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while (tries++ < 20) {
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for (i = 0; i < sizeof(mpt2_reset_magic); i++)
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mps_regwrite(sc, MPI2_WRITE_SEQUENCE_OFFSET,
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mpt2_reset_magic[i]);
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/* wait 100 msec */
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if (mtx_owned(&sc->mps_mtx) && sleep_flag == CAN_SLEEP)
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msleep(&sc->msleep_fake_chan, &sc->mps_mtx, 0,
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"mpsdiag", hz/10);
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else if (sleep_flag == CAN_SLEEP)
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pause("mpsdiag", hz/10);
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else
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DELAY(100 * 1000);
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reg = mps_regread(sc, MPI2_HOST_DIAGNOSTIC_OFFSET);
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if (reg & MPI2_DIAG_DIAG_WRITE_ENABLE) {
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error = 0;
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break;
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}
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}
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if (error)
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return (error);
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/* Send the actual reset. XXX need to refresh the reg? */
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mps_regwrite(sc, MPI2_HOST_DIAGNOSTIC_OFFSET,
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reg | MPI2_DIAG_RESET_ADAPTER);
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/* Wait up to 300 seconds in 50ms intervals */
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error = ETIMEDOUT;
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for (i = 0; i < 60000; i++) {
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/* wait 50 msec */
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if (mtx_owned(&sc->mps_mtx) && sleep_flag == CAN_SLEEP)
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msleep(&sc->msleep_fake_chan, &sc->mps_mtx, 0,
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"mpsdiag", hz/20);
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else if (sleep_flag == CAN_SLEEP)
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pause("mpsdiag", hz/20);
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else
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DELAY(50 * 1000);
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reg = mps_regread(sc, MPI2_DOORBELL_OFFSET);
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if ((reg & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_RESET) {
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error = 0;
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break;
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}
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}
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if (error)
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return (error);
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mps_regwrite(sc, MPI2_WRITE_SEQUENCE_OFFSET, 0x0);
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return (0);
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}
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static int
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mps_message_unit_reset(struct mps_softc *sc, int sleep_flag)
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{
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MPS_FUNCTRACE(sc);
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mps_regwrite(sc, MPI2_DOORBELL_OFFSET,
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MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET <<
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MPI2_DOORBELL_FUNCTION_SHIFT);
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if (mps_wait_db_ack(sc, 5, sleep_flag) != 0) {
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mps_dprint(sc, MPS_FAULT, "Doorbell handshake failed : <%s>\n",
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__func__);
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return (ETIMEDOUT);
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}
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return (0);
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}
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static int
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mps_transition_ready(struct mps_softc *sc)
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{
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uint32_t reg, state;
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int error, tries = 0;
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int sleep_flags;
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MPS_FUNCTRACE(sc);
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/* If we are in attach call, do not sleep */
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sleep_flags = (sc->mps_flags & MPS_FLAGS_ATTACH_DONE)
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? CAN_SLEEP:NO_SLEEP;
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error = 0;
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while (tries++ < 5) {
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reg = mps_regread(sc, MPI2_DOORBELL_OFFSET);
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mps_dprint(sc, MPS_INIT, "Doorbell= 0x%x\n", reg);
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/*
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* Ensure the IOC is ready to talk. If it's not, try
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* resetting it.
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*/
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if (reg & MPI2_DOORBELL_USED) {
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mps_diag_reset(sc, sleep_flags);
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DELAY(50000);
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continue;
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}
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/* Is the adapter owned by another peer? */
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if ((reg & MPI2_DOORBELL_WHO_INIT_MASK) ==
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(MPI2_WHOINIT_PCI_PEER << MPI2_DOORBELL_WHO_INIT_SHIFT)) {
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device_printf(sc->mps_dev, "IOC is under the control "
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"of another peer host, aborting initialization.\n");
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return (ENXIO);
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}
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state = reg & MPI2_IOC_STATE_MASK;
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if (state == MPI2_IOC_STATE_READY) {
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/* Ready to go! */
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error = 0;
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break;
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} else if (state == MPI2_IOC_STATE_FAULT) {
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mps_dprint(sc, MPS_FAULT, "IOC in fault state 0x%x, resetting\n",
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state & MPI2_DOORBELL_FAULT_CODE_MASK);
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mps_diag_reset(sc, sleep_flags);
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} else if (state == MPI2_IOC_STATE_OPERATIONAL) {
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/* Need to take ownership */
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mps_message_unit_reset(sc, sleep_flags);
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} else if (state == MPI2_IOC_STATE_RESET) {
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/* Wait a bit, IOC might be in transition */
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mps_dprint(sc, MPS_FAULT,
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"IOC in unexpected reset state\n");
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} else {
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mps_dprint(sc, MPS_FAULT,
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"IOC in unknown state 0x%x\n", state);
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error = EINVAL;
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break;
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}
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/* Wait 50ms for things to settle down. */
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DELAY(50000);
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}
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if (error)
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device_printf(sc->mps_dev, "Cannot transition IOC to ready\n");
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return (error);
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}
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static int
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mps_transition_operational(struct mps_softc *sc)
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{
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uint32_t reg, state;
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int error;
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MPS_FUNCTRACE(sc);
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error = 0;
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reg = mps_regread(sc, MPI2_DOORBELL_OFFSET);
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mps_dprint(sc, MPS_INIT, "Doorbell= 0x%x\n", reg);
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state = reg & MPI2_IOC_STATE_MASK;
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if (state != MPI2_IOC_STATE_READY) {
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if ((error = mps_transition_ready(sc)) != 0) {
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mps_dprint(sc, MPS_FAULT,
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"%s failed to transition ready\n", __func__);
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return (error);
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}
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}
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error = mps_send_iocinit(sc);
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return (error);
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}
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/*
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* This is called during attach and when re-initializing due to a Diag Reset.
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* IOC Facts is used to allocate many of the structures needed by the driver.
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* If called from attach, de-allocation is not required because the driver has
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* not allocated any structures yet, but if called from a Diag Reset, previously
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* allocated structures based on IOC Facts will need to be freed and re-
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* allocated bases on the latest IOC Facts.
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*/
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static int
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mps_iocfacts_allocate(struct mps_softc *sc, uint8_t attaching)
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{
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int error, i;
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Mpi2IOCFactsReply_t saved_facts;
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uint8_t saved_mode, reallocating;
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struct mpssas_lun *lun, *lun_tmp;
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struct mpssas_target *targ;
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mps_dprint(sc, MPS_TRACE, "%s\n", __func__);
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/* Save old IOC Facts and then only reallocate if Facts have changed */
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if (!attaching) {
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bcopy(sc->facts, &saved_facts, sizeof(MPI2_IOC_FACTS_REPLY));
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}
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/*
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* Get IOC Facts. In all cases throughout this function, panic if doing
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* a re-initialization and only return the error if attaching so the OS
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* can handle it.
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*/
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if ((error = mps_get_iocfacts(sc, sc->facts)) != 0) {
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if (attaching) {
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mps_dprint(sc, MPS_FAULT, "%s failed to get IOC Facts "
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"with error %d\n", __func__, error);
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return (error);
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} else {
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panic("%s failed to get IOC Facts with error %d\n",
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__func__, error);
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}
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}
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mps_print_iocfacts(sc, sc->facts);
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snprintf(sc->fw_version, sizeof(sc->fw_version),
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"%02d.%02d.%02d.%02d",
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sc->facts->FWVersion.Struct.Major,
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sc->facts->FWVersion.Struct.Minor,
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sc->facts->FWVersion.Struct.Unit,
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sc->facts->FWVersion.Struct.Dev);
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mps_printf(sc, "Firmware: %s, Driver: %s\n", sc->fw_version,
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MPS_DRIVER_VERSION);
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mps_printf(sc, "IOCCapabilities: %b\n", sc->facts->IOCCapabilities,
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"\20" "\3ScsiTaskFull" "\4DiagTrace" "\5SnapBuf" "\6ExtBuf"
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"\7EEDP" "\10BiDirTarg" "\11Multicast" "\14TransRetry" "\15IR"
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"\16EventReplay" "\17RaidAccel" "\20MSIXIndex" "\21HostDisc");
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/*
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* If the chip doesn't support event replay then a hard reset will be
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* required to trigger a full discovery. Do the reset here then
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* retransition to Ready. A hard reset might have already been done,
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* but it doesn't hurt to do it again. Only do this if attaching, not
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* for a Diag Reset.
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*/
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if (attaching) {
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if ((sc->facts->IOCCapabilities &
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MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY) == 0) {
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mps_diag_reset(sc, NO_SLEEP);
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if ((error = mps_transition_ready(sc)) != 0) {
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mps_dprint(sc, MPS_FAULT, "%s failed to "
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"transition to ready with error %d\n",
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__func__, error);
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return (error);
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}
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}
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}
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/*
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* Set flag if IR Firmware is loaded. If the RAID Capability has
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* changed from the previous IOC Facts, log a warning, but only if
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* checking this after a Diag Reset and not during attach.
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*/
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saved_mode = sc->ir_firmware;
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if (sc->facts->IOCCapabilities &
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MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID)
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sc->ir_firmware = 1;
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if (!attaching) {
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if (sc->ir_firmware != saved_mode) {
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mps_dprint(sc, MPS_FAULT, "%s new IR/IT mode in IOC "
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"Facts does not match previous mode\n", __func__);
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}
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}
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/* Only deallocate and reallocate if relevant IOC Facts have changed */
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reallocating = FALSE;
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if ((!attaching) &&
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((saved_facts.MsgVersion != sc->facts->MsgVersion) ||
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(saved_facts.HeaderVersion != sc->facts->HeaderVersion) ||
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(saved_facts.MaxChainDepth != sc->facts->MaxChainDepth) ||
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(saved_facts.RequestCredit != sc->facts->RequestCredit) ||
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(saved_facts.ProductID != sc->facts->ProductID) ||
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(saved_facts.IOCCapabilities != sc->facts->IOCCapabilities) ||
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(saved_facts.IOCRequestFrameSize !=
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sc->facts->IOCRequestFrameSize) ||
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(saved_facts.MaxTargets != sc->facts->MaxTargets) ||
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(saved_facts.MaxSasExpanders != sc->facts->MaxSasExpanders) ||
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(saved_facts.MaxEnclosures != sc->facts->MaxEnclosures) ||
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(saved_facts.HighPriorityCredit != sc->facts->HighPriorityCredit) ||
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(saved_facts.MaxReplyDescriptorPostQueueDepth !=
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sc->facts->MaxReplyDescriptorPostQueueDepth) ||
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(saved_facts.ReplyFrameSize != sc->facts->ReplyFrameSize) ||
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(saved_facts.MaxVolumes != sc->facts->MaxVolumes) ||
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(saved_facts.MaxPersistentEntries !=
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sc->facts->MaxPersistentEntries))) {
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reallocating = TRUE;
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}
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/*
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* Some things should be done if attaching or re-allocating after a Diag
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* Reset, but are not needed after a Diag Reset if the FW has not
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* changed.
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*/
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if (attaching || reallocating) {
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/*
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* Check if controller supports FW diag buffers and set flag to
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* enable each type.
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*/
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if (sc->facts->IOCCapabilities &
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MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
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sc->fw_diag_buffer_list[MPI2_DIAG_BUF_TYPE_TRACE].
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enabled = TRUE;
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if (sc->facts->IOCCapabilities &
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MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
|
|
sc->fw_diag_buffer_list[MPI2_DIAG_BUF_TYPE_SNAPSHOT].
|
|
enabled = TRUE;
|
|
if (sc->facts->IOCCapabilities &
|
|
MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
|
|
sc->fw_diag_buffer_list[MPI2_DIAG_BUF_TYPE_EXTENDED].
|
|
enabled = TRUE;
|
|
|
|
/*
|
|
* Set flag if EEDP is supported and if TLR is supported.
|
|
*/
|
|
if (sc->facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP)
|
|
sc->eedp_enabled = TRUE;
|
|
if (sc->facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR)
|
|
sc->control_TLR = TRUE;
|
|
|
|
/*
|
|
* Size the queues. Since the reply queues always need one free
|
|
* entry, we'll just deduct one reply message here.
|
|
*/
|
|
sc->num_reqs = MIN(MPS_REQ_FRAMES, sc->facts->RequestCredit);
|
|
sc->num_replies = MIN(MPS_REPLY_FRAMES + MPS_EVT_REPLY_FRAMES,
|
|
sc->facts->MaxReplyDescriptorPostQueueDepth) - 1;
|
|
|
|
/*
|
|
* Initialize all Tail Queues
|
|
*/
|
|
TAILQ_INIT(&sc->req_list);
|
|
TAILQ_INIT(&sc->high_priority_req_list);
|
|
TAILQ_INIT(&sc->chain_list);
|
|
TAILQ_INIT(&sc->tm_list);
|
|
}
|
|
|
|
/*
|
|
* If doing a Diag Reset and the FW is significantly different
|
|
* (reallocating will be set above in IOC Facts comparison), then all
|
|
* buffers based on the IOC Facts will need to be freed before they are
|
|
* reallocated.
|
|
*/
|
|
if (reallocating) {
|
|
mps_iocfacts_free(sc);
|
|
|
|
/*
|
|
* 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< saved_facts.MaxTargets; i++) {
|
|
targ = &sc->sassc->targets[i];
|
|
SLIST_FOREACH_SAFE(lun, &targ->luns, lun_link,
|
|
lun_tmp) {
|
|
free(lun, M_MPT2);
|
|
}
|
|
}
|
|
free(sc->sassc->targets, M_MPT2);
|
|
|
|
sc->sassc->targets = malloc(sizeof(struct mpssas_target) *
|
|
sc->facts->MaxTargets, M_MPT2, M_WAITOK|M_ZERO);
|
|
if (!sc->sassc->targets) {
|
|
panic("%s failed to alloc targets with error %d\n",
|
|
__func__, ENOMEM);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Any deallocation has been completed. Now start reallocating
|
|
* if needed. Will only need to reallocate if attaching or if the new
|
|
* IOC Facts are different from the previous IOC Facts after a Diag
|
|
* Reset. Targets have already been allocated above if needed.
|
|
*/
|
|
if (attaching || reallocating) {
|
|
if (((error = mps_alloc_queues(sc)) != 0) ||
|
|
((error = mps_alloc_replies(sc)) != 0) ||
|
|
((error = mps_alloc_requests(sc)) != 0)) {
|
|
if (attaching ) {
|
|
mps_dprint(sc, MPS_FAULT, "%s failed to alloc "
|
|
"queues with error %d\n", __func__, error);
|
|
mps_free(sc);
|
|
return (error);
|
|
} else {
|
|
panic("%s failed to alloc queues with error "
|
|
"%d\n", __func__, error);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Always initialize the queues */
|
|
bzero(sc->free_queue, sc->fqdepth * 4);
|
|
mps_init_queues(sc);
|
|
|
|
/*
|
|
* Always get the chip out of the reset state, but only panic if not
|
|
* attaching. If attaching and there is an error, that is handled by
|
|
* the OS.
|
|
*/
|
|
error = mps_transition_operational(sc);
|
|
if (error != 0) {
|
|
if (attaching) {
|
|
mps_printf(sc, "%s failed to transition to operational "
|
|
"with error %d\n", __func__, error);
|
|
mps_free(sc);
|
|
return (error);
|
|
} else {
|
|
panic("%s failed to transition to operational with "
|
|
"error %d\n", __func__, error);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Finish the queue initialization.
|
|
* These are set here instead of in mps_init_queues() because the
|
|
* IOC resets these values during the state transition in
|
|
* mps_transition_operational(). The free index is set to 1
|
|
* because the corresponding index in the IOC is set to 0, and the
|
|
* IOC treats the queues as full if both are set to the same value.
|
|
* Hence the reason that the queue can't hold all of the possible
|
|
* replies.
|
|
*/
|
|
sc->replypostindex = 0;
|
|
mps_regwrite(sc, MPI2_REPLY_FREE_HOST_INDEX_OFFSET, sc->replyfreeindex);
|
|
mps_regwrite(sc, MPI2_REPLY_POST_HOST_INDEX_OFFSET, 0);
|
|
|
|
/*
|
|
* Attach the subsystems so they can prepare their event masks.
|
|
*/
|
|
/* XXX Should be dynamic so that IM/IR and user modules can attach */
|
|
if (attaching) {
|
|
if (((error = mps_attach_log(sc)) != 0) ||
|
|
((error = mps_attach_sas(sc)) != 0) ||
|
|
((error = mps_attach_user(sc)) != 0)) {
|
|
mps_printf(sc, "%s failed to attach all subsystems: "
|
|
"error %d\n", __func__, error);
|
|
mps_free(sc);
|
|
return (error);
|
|
}
|
|
|
|
if ((error = mps_pci_setup_interrupts(sc)) != 0) {
|
|
mps_printf(sc, "%s failed to setup interrupts\n",
|
|
__func__);
|
|
mps_free(sc);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set flag if this is a WD controller. This shouldn't ever change, but
|
|
* reset it after a Diag Reset, just in case.
|
|
*/
|
|
sc->WD_available = FALSE;
|
|
if (pci_get_device(sc->mps_dev) == MPI2_MFGPAGE_DEVID_SSS6200)
|
|
sc->WD_available = TRUE;
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* This is called if memory is being free (during detach for example) and when
|
|
* buffers need to be reallocated due to a Diag Reset.
|
|
*/
|
|
static void
|
|
mps_iocfacts_free(struct mps_softc *sc)
|
|
{
|
|
struct mps_command *cm;
|
|
int i;
|
|
|
|
mps_dprint(sc, MPS_TRACE, "%s\n", __func__);
|
|
|
|
if (sc->post_busaddr != 0)
|
|
bus_dmamap_unload(sc->queues_dmat, sc->queues_map);
|
|
if (sc->post_queue != NULL)
|
|
bus_dmamem_free(sc->queues_dmat, sc->post_queue,
|
|
sc->queues_map);
|
|
if (sc->queues_dmat != NULL)
|
|
bus_dma_tag_destroy(sc->queues_dmat);
|
|
|
|
if (sc->chain_busaddr != 0)
|
|
bus_dmamap_unload(sc->chain_dmat, sc->chain_map);
|
|
if (sc->chain_frames != NULL)
|
|
bus_dmamem_free(sc->chain_dmat, sc->chain_frames,
|
|
sc->chain_map);
|
|
if (sc->chain_dmat != NULL)
|
|
bus_dma_tag_destroy(sc->chain_dmat);
|
|
|
|
if (sc->sense_busaddr != 0)
|
|
bus_dmamap_unload(sc->sense_dmat, sc->sense_map);
|
|
if (sc->sense_frames != NULL)
|
|
bus_dmamem_free(sc->sense_dmat, sc->sense_frames,
|
|
sc->sense_map);
|
|
if (sc->sense_dmat != NULL)
|
|
bus_dma_tag_destroy(sc->sense_dmat);
|
|
|
|
if (sc->reply_busaddr != 0)
|
|
bus_dmamap_unload(sc->reply_dmat, sc->reply_map);
|
|
if (sc->reply_frames != NULL)
|
|
bus_dmamem_free(sc->reply_dmat, sc->reply_frames,
|
|
sc->reply_map);
|
|
if (sc->reply_dmat != NULL)
|
|
bus_dma_tag_destroy(sc->reply_dmat);
|
|
|
|
if (sc->req_busaddr != 0)
|
|
bus_dmamap_unload(sc->req_dmat, sc->req_map);
|
|
if (sc->req_frames != NULL)
|
|
bus_dmamem_free(sc->req_dmat, sc->req_frames, sc->req_map);
|
|
if (sc->req_dmat != NULL)
|
|
bus_dma_tag_destroy(sc->req_dmat);
|
|
|
|
if (sc->chains != NULL)
|
|
free(sc->chains, M_MPT2);
|
|
if (sc->commands != NULL) {
|
|
for (i = 1; i < sc->num_reqs; i++) {
|
|
cm = &sc->commands[i];
|
|
bus_dmamap_destroy(sc->buffer_dmat, cm->cm_dmamap);
|
|
}
|
|
free(sc->commands, M_MPT2);
|
|
}
|
|
if (sc->buffer_dmat != NULL)
|
|
bus_dma_tag_destroy(sc->buffer_dmat);
|
|
}
|
|
|
|
/*
|
|
* The terms diag reset and hard reset are used interchangeably in the MPI
|
|
* docs to mean resetting the controller chip. In this code diag reset
|
|
* cleans everything up, and the hard reset function just sends the reset
|
|
* sequence to the chip. This should probably be refactored so that every
|
|
* subsystem gets a reset notification of some sort, and can clean up
|
|
* appropriately.
|
|
*/
|
|
int
|
|
mps_reinit(struct mps_softc *sc)
|
|
{
|
|
int error;
|
|
|
|
MPS_FUNCTRACE(sc);
|
|
|
|
mtx_assert(&sc->mps_mtx, MA_OWNED);
|
|
|
|
if (sc->mps_flags & MPS_FLAGS_DIAGRESET) {
|
|
mps_dprint(sc, MPS_INIT, "%s reset already in progress\n",
|
|
__func__);
|
|
return 0;
|
|
}
|
|
|
|
mps_dprint(sc, MPS_INFO, "Reinitializing controller,\n");
|
|
/* make sure the completion callbacks can recognize they're getting
|
|
* a NULL cm_reply due to a reset.
|
|
*/
|
|
sc->mps_flags |= MPS_FLAGS_DIAGRESET;
|
|
|
|
/*
|
|
* Mask interrupts here.
|
|
*/
|
|
mps_dprint(sc, MPS_INIT, "%s mask interrupts\n", __func__);
|
|
mps_mask_intr(sc);
|
|
|
|
error = mps_diag_reset(sc, CAN_SLEEP);
|
|
if (error != 0) {
|
|
/* XXXSL No need to panic here */
|
|
panic("%s hard reset failed with error %d\n",
|
|
__func__, error);
|
|
}
|
|
|
|
/* Restore the PCI state, including the MSI-X registers */
|
|
mps_pci_restore(sc);
|
|
|
|
/* Give the I/O subsystem special priority to get itself prepared */
|
|
mpssas_handle_reinit(sc);
|
|
|
|
/*
|
|
* Get IOC Facts and allocate all structures based on this information.
|
|
* The attach function will also call mps_iocfacts_allocate at startup.
|
|
* If relevant values have changed in IOC Facts, this function will free
|
|
* all of the memory based on IOC Facts and reallocate that memory.
|
|
*/
|
|
if ((error = mps_iocfacts_allocate(sc, FALSE)) != 0) {
|
|
panic("%s IOC Facts based allocation failed with error %d\n",
|
|
__func__, error);
|
|
}
|
|
|
|
/*
|
|
* Mapping structures will be re-allocated after getting IOC Page8, so
|
|
* free these structures here.
|
|
*/
|
|
mps_mapping_exit(sc);
|
|
|
|
/*
|
|
* The static page function currently read is IOC Page8. Others can be
|
|
* added in future. It's possible that the values in IOC Page8 have
|
|
* changed after a Diag Reset due to user modification, so always read
|
|
* these. Interrupts are masked, so unmask them before getting config
|
|
* pages.
|
|
*/
|
|
mps_unmask_intr(sc);
|
|
sc->mps_flags &= ~MPS_FLAGS_DIAGRESET;
|
|
mps_base_static_config_pages(sc);
|
|
|
|
/*
|
|
* Some mapping info is based in IOC Page8 data, so re-initialize the
|
|
* mapping tables.
|
|
*/
|
|
mps_mapping_initialize(sc);
|
|
|
|
/*
|
|
* Restart will reload the event masks clobbered by the reset, and
|
|
* then enable the port.
|
|
*/
|
|
mps_reregister_events(sc);
|
|
|
|
/* the end of discovery will release the simq, so we're done. */
|
|
mps_dprint(sc, MPS_INFO, "%s finished sc %p post %u free %u\n",
|
|
__func__, sc, sc->replypostindex, sc->replyfreeindex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Wait for the chip to ACK a word that we've put into its FIFO
|
|
* Wait for <timeout> seconds. In single loop wait for busy loop
|
|
* for 500 microseconds.
|
|
* Total is [ 0.5 * (2000 * <timeout>) ] in miliseconds.
|
|
* */
|
|
static int
|
|
mps_wait_db_ack(struct mps_softc *sc, int timeout, int sleep_flag)
|
|
{
|
|
|
|
u32 cntdn, count;
|
|
u32 int_status;
|
|
u32 doorbell;
|
|
|
|
count = 0;
|
|
cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
|
|
do {
|
|
int_status = mps_regread(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET);
|
|
if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
|
|
mps_dprint(sc, MPS_INIT,
|
|
"%s: successfull count(%d), timeout(%d)\n",
|
|
__func__, count, timeout);
|
|
return 0;
|
|
} else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
|
|
doorbell = mps_regread(sc, MPI2_DOORBELL_OFFSET);
|
|
if ((doorbell & MPI2_IOC_STATE_MASK) ==
|
|
MPI2_IOC_STATE_FAULT) {
|
|
mps_dprint(sc, MPS_FAULT,
|
|
"fault_state(0x%04x)!\n", doorbell);
|
|
return (EFAULT);
|
|
}
|
|
} else if (int_status == 0xFFFFFFFF)
|
|
goto out;
|
|
|
|
/* If it can sleep, sleep for 1 milisecond, else busy loop for
|
|
* 0.5 milisecond */
|
|
if (mtx_owned(&sc->mps_mtx) && sleep_flag == CAN_SLEEP)
|
|
msleep(&sc->msleep_fake_chan, &sc->mps_mtx, 0,
|
|
"mpsdba", hz/1000);
|
|
else if (sleep_flag == CAN_SLEEP)
|
|
pause("mpsdba", hz/1000);
|
|
else
|
|
DELAY(500);
|
|
count++;
|
|
} while (--cntdn);
|
|
|
|
out:
|
|
mps_dprint(sc, MPS_FAULT, "%s: failed due to timeout count(%d), "
|
|
"int_status(%x)!\n", __func__, count, int_status);
|
|
return (ETIMEDOUT);
|
|
|
|
}
|
|
|
|
/* Wait for the chip to signal that the next word in its FIFO can be fetched */
|
|
static int
|
|
mps_wait_db_int(struct mps_softc *sc)
|
|
{
|
|
int retry;
|
|
|
|
for (retry = 0; retry < MPS_DB_MAX_WAIT; retry++) {
|
|
if ((mps_regread(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET) &
|
|
MPI2_HIS_IOC2SYS_DB_STATUS) != 0)
|
|
return (0);
|
|
DELAY(2000);
|
|
}
|
|
return (ETIMEDOUT);
|
|
}
|
|
|
|
/* Step through the synchronous command state machine, i.e. "Doorbell mode" */
|
|
static int
|
|
mps_request_sync(struct mps_softc *sc, void *req, MPI2_DEFAULT_REPLY *reply,
|
|
int req_sz, int reply_sz, int timeout)
|
|
{
|
|
uint32_t *data32;
|
|
uint16_t *data16;
|
|
int i, count, ioc_sz, residual;
|
|
int sleep_flags = CAN_SLEEP;
|
|
|
|
if (curthread->td_no_sleeping != 0)
|
|
sleep_flags = NO_SLEEP;
|
|
|
|
/* Step 1 */
|
|
mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0);
|
|
|
|
/* Step 2 */
|
|
if (mps_regread(sc, MPI2_DOORBELL_OFFSET) & MPI2_DOORBELL_USED)
|
|
return (EBUSY);
|
|
|
|
/* Step 3
|
|
* Announce that a message is coming through the doorbell. Messages
|
|
* are pushed at 32bit words, so round up if needed.
|
|
*/
|
|
count = (req_sz + 3) / 4;
|
|
mps_regwrite(sc, MPI2_DOORBELL_OFFSET,
|
|
(MPI2_FUNCTION_HANDSHAKE << MPI2_DOORBELL_FUNCTION_SHIFT) |
|
|
(count << MPI2_DOORBELL_ADD_DWORDS_SHIFT));
|
|
|
|
/* Step 4 */
|
|
if (mps_wait_db_int(sc) ||
|
|
(mps_regread(sc, MPI2_DOORBELL_OFFSET) & MPI2_DOORBELL_USED) == 0) {
|
|
mps_dprint(sc, MPS_FAULT, "Doorbell failed to activate\n");
|
|
return (ENXIO);
|
|
}
|
|
mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0);
|
|
if (mps_wait_db_ack(sc, 5, sleep_flags) != 0) {
|
|
mps_dprint(sc, MPS_FAULT, "Doorbell handshake failed\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
/* Step 5 */
|
|
/* Clock out the message data synchronously in 32-bit dwords*/
|
|
data32 = (uint32_t *)req;
|
|
for (i = 0; i < count; i++) {
|
|
mps_regwrite(sc, MPI2_DOORBELL_OFFSET, htole32(data32[i]));
|
|
if (mps_wait_db_ack(sc, 5, sleep_flags) != 0) {
|
|
mps_dprint(sc, MPS_FAULT,
|
|
"Timeout while writing doorbell\n");
|
|
return (ENXIO);
|
|
}
|
|
}
|
|
|
|
/* Step 6 */
|
|
/* Clock in the reply in 16-bit words. The total length of the
|
|
* message is always in the 4th byte, so clock out the first 2 words
|
|
* manually, then loop the rest.
|
|
*/
|
|
data16 = (uint16_t *)reply;
|
|
if (mps_wait_db_int(sc) != 0) {
|
|
mps_dprint(sc, MPS_FAULT, "Timeout reading doorbell 0\n");
|
|
return (ENXIO);
|
|
}
|
|
data16[0] =
|
|
mps_regread(sc, MPI2_DOORBELL_OFFSET) & MPI2_DOORBELL_DATA_MASK;
|
|
mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0);
|
|
if (mps_wait_db_int(sc) != 0) {
|
|
mps_dprint(sc, MPS_FAULT, "Timeout reading doorbell 1\n");
|
|
return (ENXIO);
|
|
}
|
|
data16[1] =
|
|
mps_regread(sc, MPI2_DOORBELL_OFFSET) & MPI2_DOORBELL_DATA_MASK;
|
|
mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0);
|
|
|
|
/* Number of 32bit words in the message */
|
|
ioc_sz = reply->MsgLength;
|
|
|
|
/*
|
|
* Figure out how many 16bit words to clock in without overrunning.
|
|
* The precision loss with dividing reply_sz can safely be
|
|
* ignored because the messages can only be multiples of 32bits.
|
|
*/
|
|
residual = 0;
|
|
count = MIN((reply_sz / 4), ioc_sz) * 2;
|
|
if (count < ioc_sz * 2) {
|
|
residual = ioc_sz * 2 - count;
|
|
mps_dprint(sc, MPS_ERROR, "Driver error, throwing away %d "
|
|
"residual message words\n", residual);
|
|
}
|
|
|
|
for (i = 2; i < count; i++) {
|
|
if (mps_wait_db_int(sc) != 0) {
|
|
mps_dprint(sc, MPS_FAULT,
|
|
"Timeout reading doorbell %d\n", i);
|
|
return (ENXIO);
|
|
}
|
|
data16[i] = mps_regread(sc, MPI2_DOORBELL_OFFSET) &
|
|
MPI2_DOORBELL_DATA_MASK;
|
|
mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0);
|
|
}
|
|
|
|
/*
|
|
* Pull out residual words that won't fit into the provided buffer.
|
|
* This keeps the chip from hanging due to a driver programming
|
|
* error.
|
|
*/
|
|
while (residual--) {
|
|
if (mps_wait_db_int(sc) != 0) {
|
|
mps_dprint(sc, MPS_FAULT,
|
|
"Timeout reading doorbell\n");
|
|
return (ENXIO);
|
|
}
|
|
(void)mps_regread(sc, MPI2_DOORBELL_OFFSET);
|
|
mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0);
|
|
}
|
|
|
|
/* Step 7 */
|
|
if (mps_wait_db_int(sc) != 0) {
|
|
mps_dprint(sc, MPS_FAULT, "Timeout waiting to exit doorbell\n");
|
|
return (ENXIO);
|
|
}
|
|
if (mps_regread(sc, MPI2_DOORBELL_OFFSET) & MPI2_DOORBELL_USED)
|
|
mps_dprint(sc, MPS_FAULT, "Warning, doorbell still active\n");
|
|
mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
mps_enqueue_request(struct mps_softc *sc, struct mps_command *cm)
|
|
{
|
|
reply_descriptor rd;
|
|
MPS_FUNCTRACE(sc);
|
|
mps_dprint(sc, MPS_TRACE, "SMID %u cm %p ccb %p\n",
|
|
cm->cm_desc.Default.SMID, cm, cm->cm_ccb);
|
|
|
|
if (sc->mps_flags & MPS_FLAGS_ATTACH_DONE && !(sc->mps_flags & MPS_FLAGS_SHUTDOWN))
|
|
mtx_assert(&sc->mps_mtx, MA_OWNED);
|
|
|
|
if (++sc->io_cmds_active > sc->io_cmds_highwater)
|
|
sc->io_cmds_highwater++;
|
|
rd.u.low = cm->cm_desc.Words.Low;
|
|
rd.u.high = cm->cm_desc.Words.High;
|
|
rd.word = htole64(rd.word);
|
|
/* TODO-We may need to make below regwrite atomic */
|
|
mps_regwrite(sc, MPI2_REQUEST_DESCRIPTOR_POST_LOW_OFFSET,
|
|
rd.u.low);
|
|
mps_regwrite(sc, MPI2_REQUEST_DESCRIPTOR_POST_HIGH_OFFSET,
|
|
rd.u.high);
|
|
}
|
|
|
|
/*
|
|
* Just the FACTS, ma'am.
|
|
*/
|
|
static int
|
|
mps_get_iocfacts(struct mps_softc *sc, MPI2_IOC_FACTS_REPLY *facts)
|
|
{
|
|
MPI2_DEFAULT_REPLY *reply;
|
|
MPI2_IOC_FACTS_REQUEST request;
|
|
int error, req_sz, reply_sz;
|
|
|
|
MPS_FUNCTRACE(sc);
|
|
|
|
req_sz = sizeof(MPI2_IOC_FACTS_REQUEST);
|
|
reply_sz = sizeof(MPI2_IOC_FACTS_REPLY);
|
|
reply = (MPI2_DEFAULT_REPLY *)facts;
|
|
|
|
bzero(&request, req_sz);
|
|
request.Function = MPI2_FUNCTION_IOC_FACTS;
|
|
error = mps_request_sync(sc, &request, reply, req_sz, reply_sz, 5);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
mps_send_iocinit(struct mps_softc *sc)
|
|
{
|
|
MPI2_IOC_INIT_REQUEST init;
|
|
MPI2_DEFAULT_REPLY reply;
|
|
int req_sz, reply_sz, error;
|
|
struct timeval now;
|
|
uint64_t time_in_msec;
|
|
|
|
MPS_FUNCTRACE(sc);
|
|
|
|
req_sz = sizeof(MPI2_IOC_INIT_REQUEST);
|
|
reply_sz = sizeof(MPI2_IOC_INIT_REPLY);
|
|
bzero(&init, req_sz);
|
|
bzero(&reply, reply_sz);
|
|
|
|
/*
|
|
* Fill in the init block. Note that most addresses are
|
|
* deliberately in the lower 32bits of memory. This is a micro-
|
|
* optimzation for PCI/PCIX, though it's not clear if it helps PCIe.
|
|
*/
|
|
init.Function = MPI2_FUNCTION_IOC_INIT;
|
|
init.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
|
|
init.MsgVersion = htole16(MPI2_VERSION);
|
|
init.HeaderVersion = htole16(MPI2_HEADER_VERSION);
|
|
init.SystemRequestFrameSize = htole16(sc->facts->IOCRequestFrameSize);
|
|
init.ReplyDescriptorPostQueueDepth = htole16(sc->pqdepth);
|
|
init.ReplyFreeQueueDepth = htole16(sc->fqdepth);
|
|
init.SenseBufferAddressHigh = 0;
|
|
init.SystemReplyAddressHigh = 0;
|
|
init.SystemRequestFrameBaseAddress.High = 0;
|
|
init.SystemRequestFrameBaseAddress.Low = htole32((uint32_t)sc->req_busaddr);
|
|
init.ReplyDescriptorPostQueueAddress.High = 0;
|
|
init.ReplyDescriptorPostQueueAddress.Low = htole32((uint32_t)sc->post_busaddr);
|
|
init.ReplyFreeQueueAddress.High = 0;
|
|
init.ReplyFreeQueueAddress.Low = htole32((uint32_t)sc->free_busaddr);
|
|
getmicrotime(&now);
|
|
time_in_msec = (now.tv_sec * 1000 + now.tv_usec/1000);
|
|
init.TimeStamp.High = htole32((time_in_msec >> 32) & 0xFFFFFFFF);
|
|
init.TimeStamp.Low = htole32(time_in_msec & 0xFFFFFFFF);
|
|
|
|
error = mps_request_sync(sc, &init, &reply, req_sz, reply_sz, 5);
|
|
if ((reply.IOCStatus & MPI2_IOCSTATUS_MASK) != MPI2_IOCSTATUS_SUCCESS)
|
|
error = ENXIO;
|
|
|
|
mps_dprint(sc, MPS_INIT, "IOCInit status= 0x%x\n", reply.IOCStatus);
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
mps_memaddr_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
|
|
{
|
|
bus_addr_t *addr;
|
|
|
|
addr = arg;
|
|
*addr = segs[0].ds_addr;
|
|
}
|
|
|
|
static int
|
|
mps_alloc_queues(struct mps_softc *sc)
|
|
{
|
|
bus_addr_t queues_busaddr;
|
|
uint8_t *queues;
|
|
int qsize, fqsize, pqsize;
|
|
|
|
/*
|
|
* The reply free queue contains 4 byte entries in multiples of 16 and
|
|
* aligned on a 16 byte boundary. There must always be an unused entry.
|
|
* This queue supplies fresh reply frames for the firmware to use.
|
|
*
|
|
* The reply descriptor post queue contains 8 byte entries in
|
|
* multiples of 16 and aligned on a 16 byte boundary. This queue
|
|
* contains filled-in reply frames sent from the firmware to the host.
|
|
*
|
|
* These two queues are allocated together for simplicity.
|
|
*/
|
|
sc->fqdepth = roundup2((sc->num_replies + 1), 16);
|
|
sc->pqdepth = roundup2((sc->num_replies + 1), 16);
|
|
fqsize= sc->fqdepth * 4;
|
|
pqsize = sc->pqdepth * 8;
|
|
qsize = fqsize + pqsize;
|
|
|
|
if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */
|
|
16, 0, /* algnmnt, boundary */
|
|
BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
qsize, /* maxsize */
|
|
1, /* nsegments */
|
|
qsize, /* maxsegsize */
|
|
0, /* flags */
|
|
NULL, NULL, /* lockfunc, lockarg */
|
|
&sc->queues_dmat)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate queues DMA tag\n");
|
|
return (ENOMEM);
|
|
}
|
|
if (bus_dmamem_alloc(sc->queues_dmat, (void **)&queues, BUS_DMA_NOWAIT,
|
|
&sc->queues_map)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate queues memory\n");
|
|
return (ENOMEM);
|
|
}
|
|
bzero(queues, qsize);
|
|
bus_dmamap_load(sc->queues_dmat, sc->queues_map, queues, qsize,
|
|
mps_memaddr_cb, &queues_busaddr, 0);
|
|
|
|
sc->free_queue = (uint32_t *)queues;
|
|
sc->free_busaddr = queues_busaddr;
|
|
sc->post_queue = (MPI2_REPLY_DESCRIPTORS_UNION *)(queues + fqsize);
|
|
sc->post_busaddr = queues_busaddr + fqsize;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mps_alloc_replies(struct mps_softc *sc)
|
|
{
|
|
int rsize, num_replies;
|
|
|
|
/*
|
|
* sc->num_replies should be one less than sc->fqdepth. We need to
|
|
* allocate space for sc->fqdepth replies, but only sc->num_replies
|
|
* replies can be used at once.
|
|
*/
|
|
num_replies = max(sc->fqdepth, sc->num_replies);
|
|
|
|
rsize = sc->facts->ReplyFrameSize * num_replies * 4;
|
|
if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */
|
|
4, 0, /* algnmnt, boundary */
|
|
BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
rsize, /* maxsize */
|
|
1, /* nsegments */
|
|
rsize, /* maxsegsize */
|
|
0, /* flags */
|
|
NULL, NULL, /* lockfunc, lockarg */
|
|
&sc->reply_dmat)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate replies DMA tag\n");
|
|
return (ENOMEM);
|
|
}
|
|
if (bus_dmamem_alloc(sc->reply_dmat, (void **)&sc->reply_frames,
|
|
BUS_DMA_NOWAIT, &sc->reply_map)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate replies memory\n");
|
|
return (ENOMEM);
|
|
}
|
|
bzero(sc->reply_frames, rsize);
|
|
bus_dmamap_load(sc->reply_dmat, sc->reply_map, sc->reply_frames, rsize,
|
|
mps_memaddr_cb, &sc->reply_busaddr, 0);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mps_alloc_requests(struct mps_softc *sc)
|
|
{
|
|
struct mps_command *cm;
|
|
struct mps_chain *chain;
|
|
int i, rsize, nsegs;
|
|
|
|
rsize = sc->facts->IOCRequestFrameSize * sc->num_reqs * 4;
|
|
if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */
|
|
16, 0, /* algnmnt, boundary */
|
|
BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
rsize, /* maxsize */
|
|
1, /* nsegments */
|
|
rsize, /* maxsegsize */
|
|
0, /* flags */
|
|
NULL, NULL, /* lockfunc, lockarg */
|
|
&sc->req_dmat)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate request DMA tag\n");
|
|
return (ENOMEM);
|
|
}
|
|
if (bus_dmamem_alloc(sc->req_dmat, (void **)&sc->req_frames,
|
|
BUS_DMA_NOWAIT, &sc->req_map)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate request memory\n");
|
|
return (ENOMEM);
|
|
}
|
|
bzero(sc->req_frames, rsize);
|
|
bus_dmamap_load(sc->req_dmat, sc->req_map, sc->req_frames, rsize,
|
|
mps_memaddr_cb, &sc->req_busaddr, 0);
|
|
|
|
rsize = sc->facts->IOCRequestFrameSize * sc->max_chains * 4;
|
|
if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */
|
|
16, 0, /* algnmnt, boundary */
|
|
BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
rsize, /* maxsize */
|
|
1, /* nsegments */
|
|
rsize, /* maxsegsize */
|
|
0, /* flags */
|
|
NULL, NULL, /* lockfunc, lockarg */
|
|
&sc->chain_dmat)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate chain DMA tag\n");
|
|
return (ENOMEM);
|
|
}
|
|
if (bus_dmamem_alloc(sc->chain_dmat, (void **)&sc->chain_frames,
|
|
BUS_DMA_NOWAIT, &sc->chain_map)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate chain memory\n");
|
|
return (ENOMEM);
|
|
}
|
|
bzero(sc->chain_frames, rsize);
|
|
bus_dmamap_load(sc->chain_dmat, sc->chain_map, sc->chain_frames, rsize,
|
|
mps_memaddr_cb, &sc->chain_busaddr, 0);
|
|
|
|
rsize = MPS_SENSE_LEN * sc->num_reqs;
|
|
if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */
|
|
1, 0, /* algnmnt, boundary */
|
|
BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
rsize, /* maxsize */
|
|
1, /* nsegments */
|
|
rsize, /* maxsegsize */
|
|
0, /* flags */
|
|
NULL, NULL, /* lockfunc, lockarg */
|
|
&sc->sense_dmat)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate sense DMA tag\n");
|
|
return (ENOMEM);
|
|
}
|
|
if (bus_dmamem_alloc(sc->sense_dmat, (void **)&sc->sense_frames,
|
|
BUS_DMA_NOWAIT, &sc->sense_map)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate sense memory\n");
|
|
return (ENOMEM);
|
|
}
|
|
bzero(sc->sense_frames, rsize);
|
|
bus_dmamap_load(sc->sense_dmat, sc->sense_map, sc->sense_frames, rsize,
|
|
mps_memaddr_cb, &sc->sense_busaddr, 0);
|
|
|
|
sc->chains = malloc(sizeof(struct mps_chain) * sc->max_chains, M_MPT2,
|
|
M_WAITOK | M_ZERO);
|
|
if(!sc->chains) {
|
|
device_printf(sc->mps_dev,
|
|
"Cannot allocate chains memory %s %d\n",
|
|
__func__, __LINE__);
|
|
return (ENOMEM);
|
|
}
|
|
for (i = 0; i < sc->max_chains; i++) {
|
|
chain = &sc->chains[i];
|
|
chain->chain = (MPI2_SGE_IO_UNION *)(sc->chain_frames +
|
|
i * sc->facts->IOCRequestFrameSize * 4);
|
|
chain->chain_busaddr = sc->chain_busaddr +
|
|
i * sc->facts->IOCRequestFrameSize * 4;
|
|
mps_free_chain(sc, chain);
|
|
sc->chain_free_lowwater++;
|
|
}
|
|
|
|
/* XXX Need to pick a more precise value */
|
|
nsegs = (MAXPHYS / PAGE_SIZE) + 1;
|
|
if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */
|
|
1, 0, /* algnmnt, boundary */
|
|
BUS_SPACE_MAXADDR, /* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
|
|
nsegs, /* nsegments */
|
|
BUS_SPACE_MAXSIZE_24BIT,/* maxsegsize */
|
|
BUS_DMA_ALLOCNOW, /* flags */
|
|
busdma_lock_mutex, /* lockfunc */
|
|
&sc->mps_mtx, /* lockarg */
|
|
&sc->buffer_dmat)) {
|
|
device_printf(sc->mps_dev, "Cannot allocate buffer DMA tag\n");
|
|
return (ENOMEM);
|
|
}
|
|
|
|
/*
|
|
* SMID 0 cannot be used as a free command per the firmware spec.
|
|
* Just drop that command instead of risking accounting bugs.
|
|
*/
|
|
sc->commands = malloc(sizeof(struct mps_command) * sc->num_reqs,
|
|
M_MPT2, M_WAITOK | M_ZERO);
|
|
if(!sc->commands) {
|
|
device_printf(sc->mps_dev, "Cannot allocate memory %s %d\n",
|
|
__func__, __LINE__);
|
|
return (ENOMEM);
|
|
}
|
|
for (i = 1; i < sc->num_reqs; i++) {
|
|
cm = &sc->commands[i];
|
|
cm->cm_req = sc->req_frames +
|
|
i * sc->facts->IOCRequestFrameSize * 4;
|
|
cm->cm_req_busaddr = sc->req_busaddr +
|
|
i * sc->facts->IOCRequestFrameSize * 4;
|
|
cm->cm_sense = &sc->sense_frames[i];
|
|
cm->cm_sense_busaddr = sc->sense_busaddr + i * MPS_SENSE_LEN;
|
|
cm->cm_desc.Default.SMID = i;
|
|
cm->cm_sc = sc;
|
|
TAILQ_INIT(&cm->cm_chain_list);
|
|
callout_init_mtx(&cm->cm_callout, &sc->mps_mtx, 0);
|
|
|
|
/* XXX Is a failure here a critical problem? */
|
|
if (bus_dmamap_create(sc->buffer_dmat, 0, &cm->cm_dmamap) == 0)
|
|
if (i <= sc->facts->HighPriorityCredit)
|
|
mps_free_high_priority_command(sc, cm);
|
|
else
|
|
mps_free_command(sc, cm);
|
|
else {
|
|
panic("failed to allocate command %d\n", i);
|
|
sc->num_reqs = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mps_init_queues(struct mps_softc *sc)
|
|
{
|
|
int i;
|
|
|
|
memset((uint8_t *)sc->post_queue, 0xff, sc->pqdepth * 8);
|
|
|
|
/*
|
|
* According to the spec, we need to use one less reply than we
|
|
* have space for on the queue. So sc->num_replies (the number we
|
|
* use) should be less than sc->fqdepth (allocated size).
|
|
*/
|
|
if (sc->num_replies >= sc->fqdepth)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* Initialize all of the free queue entries.
|
|
*/
|
|
for (i = 0; i < sc->fqdepth; i++)
|
|
sc->free_queue[i] = sc->reply_busaddr + (i * sc->facts->ReplyFrameSize * 4);
|
|
sc->replyfreeindex = sc->num_replies;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Get the driver parameter tunables. Lowest priority are the driver defaults.
|
|
* Next are the global settings, if they exist. Highest are the per-unit
|
|
* settings, if they exist.
|
|
*/
|
|
static void
|
|
mps_get_tunables(struct mps_softc *sc)
|
|
{
|
|
char tmpstr[80];
|
|
|
|
/* XXX default to some debugging for now */
|
|
sc->mps_debug = MPS_INFO|MPS_FAULT;
|
|
sc->disable_msix = 0;
|
|
sc->disable_msi = 0;
|
|
sc->max_chains = MPS_CHAIN_FRAMES;
|
|
|
|
/*
|
|
* Grab the global variables.
|
|
*/
|
|
TUNABLE_INT_FETCH("hw.mps.debug_level", &sc->mps_debug);
|
|
TUNABLE_INT_FETCH("hw.mps.disable_msix", &sc->disable_msix);
|
|
TUNABLE_INT_FETCH("hw.mps.disable_msi", &sc->disable_msi);
|
|
TUNABLE_INT_FETCH("hw.mps.max_chains", &sc->max_chains);
|
|
|
|
/* Grab the unit-instance variables */
|
|
snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.debug_level",
|
|
device_get_unit(sc->mps_dev));
|
|
TUNABLE_INT_FETCH(tmpstr, &sc->mps_debug);
|
|
|
|
snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.disable_msix",
|
|
device_get_unit(sc->mps_dev));
|
|
TUNABLE_INT_FETCH(tmpstr, &sc->disable_msix);
|
|
|
|
snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.disable_msi",
|
|
device_get_unit(sc->mps_dev));
|
|
TUNABLE_INT_FETCH(tmpstr, &sc->disable_msi);
|
|
|
|
snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.max_chains",
|
|
device_get_unit(sc->mps_dev));
|
|
TUNABLE_INT_FETCH(tmpstr, &sc->max_chains);
|
|
|
|
bzero(sc->exclude_ids, sizeof(sc->exclude_ids));
|
|
snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.exclude_ids",
|
|
device_get_unit(sc->mps_dev));
|
|
TUNABLE_STR_FETCH(tmpstr, sc->exclude_ids, sizeof(sc->exclude_ids));
|
|
}
|
|
|
|
static void
|
|
mps_setup_sysctl(struct mps_softc *sc)
|
|
{
|
|
struct sysctl_ctx_list *sysctl_ctx = NULL;
|
|
struct sysctl_oid *sysctl_tree = NULL;
|
|
char tmpstr[80], tmpstr2[80];
|
|
|
|
/*
|
|
* Setup the sysctl variable so the user can change the debug level
|
|
* on the fly.
|
|
*/
|
|
snprintf(tmpstr, sizeof(tmpstr), "MPS controller %d",
|
|
device_get_unit(sc->mps_dev));
|
|
snprintf(tmpstr2, sizeof(tmpstr2), "%d", device_get_unit(sc->mps_dev));
|
|
|
|
sysctl_ctx = device_get_sysctl_ctx(sc->mps_dev);
|
|
if (sysctl_ctx != NULL)
|
|
sysctl_tree = device_get_sysctl_tree(sc->mps_dev);
|
|
|
|
if (sysctl_tree == NULL) {
|
|
sysctl_ctx_init(&sc->sysctl_ctx);
|
|
sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
|
|
SYSCTL_STATIC_CHILDREN(_hw_mps), OID_AUTO, tmpstr2,
|
|
CTLFLAG_RD, 0, tmpstr);
|
|
if (sc->sysctl_tree == NULL)
|
|
return;
|
|
sysctl_ctx = &sc->sysctl_ctx;
|
|
sysctl_tree = sc->sysctl_tree;
|
|
}
|
|
|
|
SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "debug_level", CTLFLAG_RW, &sc->mps_debug, 0,
|
|
"mps debug level");
|
|
|
|
SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "disable_msix", CTLFLAG_RD, &sc->disable_msix, 0,
|
|
"Disable the use of MSI-X interrupts");
|
|
|
|
SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "disable_msi", CTLFLAG_RD, &sc->disable_msi, 0,
|
|
"Disable the use of MSI interrupts");
|
|
|
|
SYSCTL_ADD_STRING(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "firmware_version", CTLFLAG_RW, &sc->fw_version,
|
|
strlen(sc->fw_version), "firmware version");
|
|
|
|
SYSCTL_ADD_STRING(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "driver_version", CTLFLAG_RW, MPS_DRIVER_VERSION,
|
|
strlen(MPS_DRIVER_VERSION), "driver version");
|
|
|
|
SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "io_cmds_active", CTLFLAG_RD,
|
|
&sc->io_cmds_active, 0, "number of currently active commands");
|
|
|
|
SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "io_cmds_highwater", CTLFLAG_RD,
|
|
&sc->io_cmds_highwater, 0, "maximum active commands seen");
|
|
|
|
SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "chain_free", CTLFLAG_RD,
|
|
&sc->chain_free, 0, "number of free chain elements");
|
|
|
|
SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "chain_free_lowwater", CTLFLAG_RD,
|
|
&sc->chain_free_lowwater, 0,"lowest number of free chain elements");
|
|
|
|
SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "max_chains", CTLFLAG_RD,
|
|
&sc->max_chains, 0,"maximum chain frames that will be allocated");
|
|
|
|
#if __FreeBSD_version >= 900030
|
|
SYSCTL_ADD_UQUAD(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
|
|
OID_AUTO, "chain_alloc_fail", CTLFLAG_RD,
|
|
&sc->chain_alloc_fail, "chain allocation failures");
|
|
#endif //FreeBSD_version >= 900030
|
|
}
|
|
|
|
int
|
|
mps_attach(struct mps_softc *sc)
|
|
{
|
|
int error;
|
|
|
|
mps_get_tunables(sc);
|
|
|
|
MPS_FUNCTRACE(sc);
|
|
|
|
mtx_init(&sc->mps_mtx, "MPT2SAS lock", NULL, MTX_DEF);
|
|
callout_init_mtx(&sc->periodic, &sc->mps_mtx, 0);
|
|
TAILQ_INIT(&sc->event_list);
|
|
timevalclear(&sc->lastfail);
|
|
|
|
if ((error = mps_transition_ready(sc)) != 0) {
|
|
mps_printf(sc, "%s failed to transition ready\n", __func__);
|
|
return (error);
|
|
}
|
|
|
|
sc->facts = malloc(sizeof(MPI2_IOC_FACTS_REPLY), M_MPT2,
|
|
M_ZERO|M_NOWAIT);
|
|
if(!sc->facts) {
|
|
device_printf(sc->mps_dev, "Cannot allocate memory %s %d\n",
|
|
__func__, __LINE__);
|
|
return (ENOMEM);
|
|
}
|
|
|
|
/*
|
|
* Get IOC Facts and allocate all structures based on this information.
|
|
* A Diag Reset will also call mps_iocfacts_allocate and re-read the IOC
|
|
* Facts. If relevant values have changed in IOC Facts, this function
|
|
* will free all of the memory based on IOC Facts and reallocate that
|
|
* memory. If this fails, any allocated memory should already be freed.
|
|
*/
|
|
if ((error = mps_iocfacts_allocate(sc, TRUE)) != 0) {
|
|
mps_dprint(sc, MPS_FAULT, "%s IOC Facts based allocation "
|
|
"failed with error %d\n", __func__, error);
|
|
return (error);
|
|
}
|
|
|
|
/* Start the periodic watchdog check on the IOC Doorbell */
|
|
mps_periodic(sc);
|
|
|
|
/*
|
|
* The portenable will kick off discovery events that will drive the
|
|
* rest of the initialization process. The CAM/SAS module will
|
|
* hold up the boot sequence until discovery is complete.
|
|
*/
|
|
sc->mps_ich.ich_func = mps_startup;
|
|
sc->mps_ich.ich_arg = sc;
|
|
if (config_intrhook_establish(&sc->mps_ich) != 0) {
|
|
mps_dprint(sc, MPS_ERROR, "Cannot establish MPS config hook\n");
|
|
error = EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Allow IR to shutdown gracefully when shutdown occurs.
|
|
*/
|
|
sc->shutdown_eh = EVENTHANDLER_REGISTER(shutdown_final,
|
|
mpssas_ir_shutdown, sc, SHUTDOWN_PRI_DEFAULT);
|
|
|
|
if (sc->shutdown_eh == NULL)
|
|
mps_dprint(sc, MPS_ERROR, "shutdown event registration "
|
|
"failed\n");
|
|
|
|
mps_setup_sysctl(sc);
|
|
|
|
sc->mps_flags |= MPS_FLAGS_ATTACH_DONE;
|
|
|
|
return (error);
|
|
}
|
|
|
|
/* Run through any late-start handlers. */
|
|
static void
|
|
mps_startup(void *arg)
|
|
{
|
|
struct mps_softc *sc;
|
|
|
|
sc = (struct mps_softc *)arg;
|
|
|
|
mps_lock(sc);
|
|
mps_unmask_intr(sc);
|
|
|
|
/* initialize device mapping tables */
|
|
mps_base_static_config_pages(sc);
|
|
mps_mapping_initialize(sc);
|
|
mpssas_startup(sc);
|
|
mps_unlock(sc);
|
|
}
|
|
|
|
/* Periodic watchdog. Is called with the driver lock already held. */
|
|
static void
|
|
mps_periodic(void *arg)
|
|
{
|
|
struct mps_softc *sc;
|
|
uint32_t db;
|
|
|
|
sc = (struct mps_softc *)arg;
|
|
if (sc->mps_flags & MPS_FLAGS_SHUTDOWN)
|
|
return;
|
|
|
|
db = mps_regread(sc, MPI2_DOORBELL_OFFSET);
|
|
if ((db & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
|
|
mps_dprint(sc, MPS_FAULT, "IOC Fault 0x%08x, Resetting\n", db);
|
|
mps_reinit(sc);
|
|
}
|
|
|
|
callout_reset(&sc->periodic, MPS_PERIODIC_DELAY * hz, mps_periodic, sc);
|
|
}
|
|
|
|
static void
|
|
mps_log_evt_handler(struct mps_softc *sc, uintptr_t data,
|
|
MPI2_EVENT_NOTIFICATION_REPLY *event)
|
|
{
|
|
MPI2_EVENT_DATA_LOG_ENTRY_ADDED *entry;
|
|
|
|
mps_print_event(sc, event);
|
|
|
|
switch (event->Event) {
|
|
case MPI2_EVENT_LOG_DATA:
|
|
mps_dprint(sc, MPS_EVENT, "MPI2_EVENT_LOG_DATA:\n");
|
|
if (sc->mps_debug & MPS_EVENT)
|
|
hexdump(event->EventData, event->EventDataLength, NULL, 0);
|
|
break;
|
|
case MPI2_EVENT_LOG_ENTRY_ADDED:
|
|
entry = (MPI2_EVENT_DATA_LOG_ENTRY_ADDED *)event->EventData;
|
|
mps_dprint(sc, MPS_EVENT, "MPI2_EVENT_LOG_ENTRY_ADDED event "
|
|
"0x%x Sequence %d:\n", entry->LogEntryQualifier,
|
|
entry->LogSequence);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static int
|
|
mps_attach_log(struct mps_softc *sc)
|
|
{
|
|
u32 events[MPI2_EVENT_NOTIFY_EVENTMASK_WORDS];
|
|
|
|
bzero(events, 16);
|
|
setbit(events, MPI2_EVENT_LOG_DATA);
|
|
setbit(events, MPI2_EVENT_LOG_ENTRY_ADDED);
|
|
|
|
mps_register_events(sc, events, mps_log_evt_handler, NULL,
|
|
&sc->mps_log_eh);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mps_detach_log(struct mps_softc *sc)
|
|
{
|
|
|
|
if (sc->mps_log_eh != NULL)
|
|
mps_deregister_events(sc, sc->mps_log_eh);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Free all of the driver resources and detach submodules. Should be called
|
|
* without the lock held.
|
|
*/
|
|
int
|
|
mps_free(struct mps_softc *sc)
|
|
{
|
|
int error;
|
|
|
|
/* Turn off the watchdog */
|
|
mps_lock(sc);
|
|
sc->mps_flags |= MPS_FLAGS_SHUTDOWN;
|
|
mps_unlock(sc);
|
|
/* Lock must not be held for this */
|
|
callout_drain(&sc->periodic);
|
|
|
|
if (((error = mps_detach_log(sc)) != 0) ||
|
|
((error = mps_detach_sas(sc)) != 0))
|
|
return (error);
|
|
|
|
mps_detach_user(sc);
|
|
|
|
/* Put the IOC back in the READY state. */
|
|
mps_lock(sc);
|
|
if ((error = mps_transition_ready(sc)) != 0) {
|
|
mps_unlock(sc);
|
|
return (error);
|
|
}
|
|
mps_unlock(sc);
|
|
|
|
if (sc->facts != NULL)
|
|
free(sc->facts, M_MPT2);
|
|
|
|
/*
|
|
* Free all buffers that are based on IOC Facts. A Diag Reset may need
|
|
* to free these buffers too.
|
|
*/
|
|
mps_iocfacts_free(sc);
|
|
|
|
if (sc->sysctl_tree != NULL)
|
|
sysctl_ctx_free(&sc->sysctl_ctx);
|
|
|
|
/* Deregister the shutdown function */
|
|
if (sc->shutdown_eh != NULL)
|
|
EVENTHANDLER_DEREGISTER(shutdown_final, sc->shutdown_eh);
|
|
|
|
mtx_destroy(&sc->mps_mtx);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __inline void
|
|
mps_complete_command(struct mps_softc *sc, struct mps_command *cm)
|
|
{
|
|
MPS_FUNCTRACE(sc);
|
|
|
|
if (cm == NULL) {
|
|
mps_dprint(sc, MPS_ERROR, "Completing NULL command\n");
|
|
return;
|
|
}
|
|
|
|
if (cm->cm_flags & MPS_CM_FLAGS_POLLED)
|
|
cm->cm_flags |= MPS_CM_FLAGS_COMPLETE;
|
|
|
|
if (cm->cm_complete != NULL) {
|
|
mps_dprint(sc, MPS_TRACE,
|
|
"%s cm %p calling cm_complete %p data %p reply %p\n",
|
|
__func__, cm, cm->cm_complete, cm->cm_complete_data,
|
|
cm->cm_reply);
|
|
cm->cm_complete(sc, cm);
|
|
}
|
|
|
|
if (cm->cm_flags & MPS_CM_FLAGS_WAKEUP) {
|
|
mps_dprint(sc, MPS_TRACE, "waking up %p\n", cm);
|
|
wakeup(cm);
|
|
}
|
|
|
|
if (cm->cm_sc->io_cmds_active != 0) {
|
|
cm->cm_sc->io_cmds_active--;
|
|
} else {
|
|
mps_dprint(sc, MPS_ERROR, "Warning: io_cmds_active is "
|
|
"out of sync - resynching to 0\n");
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
mps_sas_log_info(struct mps_softc *sc , u32 log_info)
|
|
{
|
|
union loginfo_type {
|
|
u32 loginfo;
|
|
struct {
|
|
u32 subcode:16;
|
|
u32 code:8;
|
|
u32 originator:4;
|
|
u32 bus_type:4;
|
|
} dw;
|
|
};
|
|
union loginfo_type sas_loginfo;
|
|
char *originator_str = NULL;
|
|
|
|
sas_loginfo.loginfo = log_info;
|
|
if (sas_loginfo.dw.bus_type != 3 /*SAS*/)
|
|
return;
|
|
|
|
/* each nexus loss loginfo */
|
|
if (log_info == 0x31170000)
|
|
return;
|
|
|
|
/* eat the loginfos associated with task aborts */
|
|
if ((log_info == 30050000 || log_info ==
|
|
0x31140000 || log_info == 0x31130000))
|
|
return;
|
|
|
|
switch (sas_loginfo.dw.originator) {
|
|
case 0:
|
|
originator_str = "IOP";
|
|
break;
|
|
case 1:
|
|
originator_str = "PL";
|
|
break;
|
|
case 2:
|
|
originator_str = "IR";
|
|
break;
|
|
}
|
|
|
|
mps_dprint(sc, MPS_LOG, "log_info(0x%08x): originator(%s), "
|
|
"code(0x%02x), sub_code(0x%04x)\n", log_info,
|
|
originator_str, sas_loginfo.dw.code,
|
|
sas_loginfo.dw.subcode);
|
|
}
|
|
|
|
static void
|
|
mps_display_reply_info(struct mps_softc *sc, uint8_t *reply)
|
|
{
|
|
MPI2DefaultReply_t *mpi_reply;
|
|
u16 sc_status;
|
|
|
|
mpi_reply = (MPI2DefaultReply_t*)reply;
|
|
sc_status = le16toh(mpi_reply->IOCStatus);
|
|
if (sc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
|
|
mps_sas_log_info(sc, le32toh(mpi_reply->IOCLogInfo));
|
|
}
|
|
void
|
|
mps_intr(void *data)
|
|
{
|
|
struct mps_softc *sc;
|
|
uint32_t status;
|
|
|
|
sc = (struct mps_softc *)data;
|
|
mps_dprint(sc, MPS_TRACE, "%s\n", __func__);
|
|
|
|
/*
|
|
* Check interrupt status register to flush the bus. This is
|
|
* needed for both INTx interrupts and driver-driven polling
|
|
*/
|
|
status = mps_regread(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET);
|
|
if ((status & MPI2_HIS_REPLY_DESCRIPTOR_INTERRUPT) == 0)
|
|
return;
|
|
|
|
mps_lock(sc);
|
|
mps_intr_locked(data);
|
|
mps_unlock(sc);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* In theory, MSI/MSIX interrupts shouldn't need to read any registers on the
|
|
* chip. Hopefully this theory is correct.
|
|
*/
|
|
void
|
|
mps_intr_msi(void *data)
|
|
{
|
|
struct mps_softc *sc;
|
|
|
|
sc = (struct mps_softc *)data;
|
|
mps_dprint(sc, MPS_TRACE, "%s\n", __func__);
|
|
mps_lock(sc);
|
|
mps_intr_locked(data);
|
|
mps_unlock(sc);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The locking is overly broad and simplistic, but easy to deal with for now.
|
|
*/
|
|
void
|
|
mps_intr_locked(void *data)
|
|
{
|
|
MPI2_REPLY_DESCRIPTORS_UNION *desc;
|
|
struct mps_softc *sc;
|
|
struct mps_command *cm = NULL;
|
|
uint8_t flags;
|
|
u_int pq;
|
|
MPI2_DIAG_RELEASE_REPLY *rel_rep;
|
|
mps_fw_diagnostic_buffer_t *pBuffer;
|
|
|
|
sc = (struct mps_softc *)data;
|
|
|
|
pq = sc->replypostindex;
|
|
mps_dprint(sc, MPS_TRACE,
|
|
"%s sc %p starting with replypostindex %u\n",
|
|
__func__, sc, sc->replypostindex);
|
|
|
|
for ( ;; ) {
|
|
cm = NULL;
|
|
desc = &sc->post_queue[sc->replypostindex];
|
|
flags = desc->Default.ReplyFlags &
|
|
MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
|
|
if ((flags == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
|
|
|| (le32toh(desc->Words.High) == 0xffffffff))
|
|
break;
|
|
|
|
/* increment the replypostindex now, so that event handlers
|
|
* and cm completion handlers which decide to do a diag
|
|
* reset can zero it without it getting incremented again
|
|
* afterwards, and we break out of this loop on the next
|
|
* iteration since the reply post queue has been cleared to
|
|
* 0xFF and all descriptors look unused (which they are).
|
|
*/
|
|
if (++sc->replypostindex >= sc->pqdepth)
|
|
sc->replypostindex = 0;
|
|
|
|
switch (flags) {
|
|
case MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS:
|
|
cm = &sc->commands[le16toh(desc->SCSIIOSuccess.SMID)];
|
|
cm->cm_reply = NULL;
|
|
break;
|
|
case MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY:
|
|
{
|
|
uint32_t baddr;
|
|
uint8_t *reply;
|
|
|
|
/*
|
|
* Re-compose the reply address from the address
|
|
* sent back from the chip. The ReplyFrameAddress
|
|
* is the lower 32 bits of the physical address of
|
|
* particular reply frame. Convert that address to
|
|
* host format, and then use that to provide the
|
|
* offset against the virtual address base
|
|
* (sc->reply_frames).
|
|
*/
|
|
baddr = le32toh(desc->AddressReply.ReplyFrameAddress);
|
|
reply = sc->reply_frames +
|
|
(baddr - ((uint32_t)sc->reply_busaddr));
|
|
/*
|
|
* Make sure the reply we got back is in a valid
|
|
* range. If not, go ahead and panic here, since
|
|
* we'll probably panic as soon as we deference the
|
|
* reply pointer anyway.
|
|
*/
|
|
if ((reply < sc->reply_frames)
|
|
|| (reply > (sc->reply_frames +
|
|
(sc->fqdepth * sc->facts->ReplyFrameSize * 4)))) {
|
|
printf("%s: WARNING: reply %p out of range!\n",
|
|
__func__, reply);
|
|
printf("%s: reply_frames %p, fqdepth %d, "
|
|
"frame size %d\n", __func__,
|
|
sc->reply_frames, sc->fqdepth,
|
|
sc->facts->ReplyFrameSize * 4);
|
|
printf("%s: baddr %#x,\n", __func__, baddr);
|
|
/* LSI-TODO. See Linux Code. Need Gracefull exit*/
|
|
panic("Reply address out of range");
|
|
}
|
|
if (le16toh(desc->AddressReply.SMID) == 0) {
|
|
if (((MPI2_DEFAULT_REPLY *)reply)->Function ==
|
|
MPI2_FUNCTION_DIAG_BUFFER_POST) {
|
|
/*
|
|
* If SMID is 0 for Diag Buffer Post,
|
|
* this implies that the reply is due to
|
|
* a release function with a status that
|
|
* the buffer has been released. Set
|
|
* the buffer flags accordingly.
|
|
*/
|
|
rel_rep =
|
|
(MPI2_DIAG_RELEASE_REPLY *)reply;
|
|
if (le16toh(rel_rep->IOCStatus) ==
|
|
MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED)
|
|
{
|
|
pBuffer =
|
|
&sc->fw_diag_buffer_list[
|
|
rel_rep->BufferType];
|
|
pBuffer->valid_data = TRUE;
|
|
pBuffer->owned_by_firmware =
|
|
FALSE;
|
|
pBuffer->immediate = FALSE;
|
|
}
|
|
} else
|
|
mps_dispatch_event(sc, baddr,
|
|
(MPI2_EVENT_NOTIFICATION_REPLY *)
|
|
reply);
|
|
} else {
|
|
cm = &sc->commands[le16toh(desc->AddressReply.SMID)];
|
|
cm->cm_reply = reply;
|
|
cm->cm_reply_data =
|
|
le32toh(desc->AddressReply.ReplyFrameAddress);
|
|
}
|
|
break;
|
|
}
|
|
case MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS:
|
|
case MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER:
|
|
case MPI2_RPY_DESCRIPT_FLAGS_RAID_ACCELERATOR_SUCCESS:
|
|
default:
|
|
/* Unhandled */
|
|
mps_dprint(sc, MPS_ERROR, "Unhandled reply 0x%x\n",
|
|
desc->Default.ReplyFlags);
|
|
cm = NULL;
|
|
break;
|
|
}
|
|
|
|
|
|
if (cm != NULL) {
|
|
// Print Error reply frame
|
|
if (cm->cm_reply)
|
|
mps_display_reply_info(sc,cm->cm_reply);
|
|
mps_complete_command(sc, cm);
|
|
}
|
|
|
|
desc->Words.Low = 0xffffffff;
|
|
desc->Words.High = 0xffffffff;
|
|
}
|
|
|
|
if (pq != sc->replypostindex) {
|
|
mps_dprint(sc, MPS_TRACE,
|
|
"%s sc %p writing postindex %d\n",
|
|
__func__, sc, sc->replypostindex);
|
|
mps_regwrite(sc, MPI2_REPLY_POST_HOST_INDEX_OFFSET, sc->replypostindex);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
mps_dispatch_event(struct mps_softc *sc, uintptr_t data,
|
|
MPI2_EVENT_NOTIFICATION_REPLY *reply)
|
|
{
|
|
struct mps_event_handle *eh;
|
|
int event, handled = 0;
|
|
|
|
event = le16toh(reply->Event);
|
|
TAILQ_FOREACH(eh, &sc->event_list, eh_list) {
|
|
if (isset(eh->mask, event)) {
|
|
eh->callback(sc, data, reply);
|
|
handled++;
|
|
}
|
|
}
|
|
|
|
if (handled == 0)
|
|
mps_dprint(sc, MPS_EVENT, "Unhandled event 0x%x\n", le16toh(event));
|
|
|
|
/*
|
|
* This is the only place that the event/reply should be freed.
|
|
* Anything wanting to hold onto the event data should have
|
|
* already copied it into their own storage.
|
|
*/
|
|
mps_free_reply(sc, data);
|
|
}
|
|
|
|
static void
|
|
mps_reregister_events_complete(struct mps_softc *sc, struct mps_command *cm)
|
|
{
|
|
mps_dprint(sc, MPS_TRACE, "%s\n", __func__);
|
|
|
|
if (cm->cm_reply)
|
|
mps_print_event(sc,
|
|
(MPI2_EVENT_NOTIFICATION_REPLY *)cm->cm_reply);
|
|
|
|
mps_free_command(sc, cm);
|
|
|
|
/* next, send a port enable */
|
|
mpssas_startup(sc);
|
|
}
|
|
|
|
/*
|
|
* For both register_events and update_events, the caller supplies a bitmap
|
|
* of events that it _wants_. These functions then turn that into a bitmask
|
|
* suitable for the controller.
|
|
*/
|
|
int
|
|
mps_register_events(struct mps_softc *sc, u32 *mask,
|
|
mps_evt_callback_t *cb, void *data, struct mps_event_handle **handle)
|
|
{
|
|
struct mps_event_handle *eh;
|
|
int error = 0;
|
|
|
|
eh = malloc(sizeof(struct mps_event_handle), M_MPT2, M_WAITOK|M_ZERO);
|
|
if(!eh) {
|
|
device_printf(sc->mps_dev, "Cannot allocate memory %s %d\n",
|
|
__func__, __LINE__);
|
|
return (ENOMEM);
|
|
}
|
|
eh->callback = cb;
|
|
eh->data = data;
|
|
TAILQ_INSERT_TAIL(&sc->event_list, eh, eh_list);
|
|
if (mask != NULL)
|
|
error = mps_update_events(sc, eh, mask);
|
|
*handle = eh;
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
mps_update_events(struct mps_softc *sc, struct mps_event_handle *handle,
|
|
u32 *mask)
|
|
{
|
|
MPI2_EVENT_NOTIFICATION_REQUEST *evtreq;
|
|
MPI2_EVENT_NOTIFICATION_REPLY *reply;
|
|
struct mps_command *cm;
|
|
int error, i;
|
|
|
|
mps_dprint(sc, MPS_TRACE, "%s\n", __func__);
|
|
|
|
if ((mask != NULL) && (handle != NULL))
|
|
bcopy(mask, &handle->mask[0], sizeof(u32) *
|
|
MPI2_EVENT_NOTIFY_EVENTMASK_WORDS);
|
|
|
|
for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
|
|
sc->event_mask[i] = -1;
|
|
|
|
for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
|
|
sc->event_mask[i] &= ~handle->mask[i];
|
|
|
|
|
|
if ((cm = mps_alloc_command(sc)) == NULL)
|
|
return (EBUSY);
|
|
evtreq = (MPI2_EVENT_NOTIFICATION_REQUEST *)cm->cm_req;
|
|
evtreq->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
|
|
evtreq->MsgFlags = 0;
|
|
evtreq->SASBroadcastPrimitiveMasks = 0;
|
|
#ifdef MPS_DEBUG_ALL_EVENTS
|
|
{
|
|
u_char fullmask[16];
|
|
memset(fullmask, 0x00, 16);
|
|
bcopy(fullmask, &evtreq->EventMasks[0], sizeof(u32) *
|
|
MPI2_EVENT_NOTIFY_EVENTMASK_WORDS);
|
|
}
|
|
#else
|
|
for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
|
|
evtreq->EventMasks[i] =
|
|
htole32(sc->event_mask[i]);
|
|
#endif
|
|
cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
|
|
cm->cm_data = NULL;
|
|
|
|
error = mps_request_polled(sc, cm);
|
|
reply = (MPI2_EVENT_NOTIFICATION_REPLY *)cm->cm_reply;
|
|
if ((reply == NULL) ||
|
|
(reply->IOCStatus & MPI2_IOCSTATUS_MASK) != MPI2_IOCSTATUS_SUCCESS)
|
|
error = ENXIO;
|
|
mps_print_event(sc, reply);
|
|
mps_dprint(sc, MPS_TRACE, "%s finished error %d\n", __func__, error);
|
|
|
|
mps_free_command(sc, cm);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
mps_reregister_events(struct mps_softc *sc)
|
|
{
|
|
MPI2_EVENT_NOTIFICATION_REQUEST *evtreq;
|
|
struct mps_command *cm;
|
|
struct mps_event_handle *eh;
|
|
int error, i;
|
|
|
|
mps_dprint(sc, MPS_TRACE, "%s\n", __func__);
|
|
|
|
/* first, reregister events */
|
|
|
|
for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
|
|
sc->event_mask[i] = -1;
|
|
|
|
TAILQ_FOREACH(eh, &sc->event_list, eh_list) {
|
|
for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
|
|
sc->event_mask[i] &= ~eh->mask[i];
|
|
}
|
|
|
|
if ((cm = mps_alloc_command(sc)) == NULL)
|
|
return (EBUSY);
|
|
evtreq = (MPI2_EVENT_NOTIFICATION_REQUEST *)cm->cm_req;
|
|
evtreq->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
|
|
evtreq->MsgFlags = 0;
|
|
evtreq->SASBroadcastPrimitiveMasks = 0;
|
|
#ifdef MPS_DEBUG_ALL_EVENTS
|
|
{
|
|
u_char fullmask[16];
|
|
memset(fullmask, 0x00, 16);
|
|
bcopy(fullmask, &evtreq->EventMasks[0], sizeof(u32) *
|
|
MPI2_EVENT_NOTIFY_EVENTMASK_WORDS);
|
|
}
|
|
#else
|
|
for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
|
|
evtreq->EventMasks[i] =
|
|
htole32(sc->event_mask[i]);
|
|
#endif
|
|
cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
|
|
cm->cm_data = NULL;
|
|
cm->cm_complete = mps_reregister_events_complete;
|
|
|
|
error = mps_map_command(sc, cm);
|
|
|
|
mps_dprint(sc, MPS_TRACE, "%s finished with error %d\n", __func__,
|
|
error);
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
mps_deregister_events(struct mps_softc *sc, struct mps_event_handle *handle)
|
|
{
|
|
|
|
TAILQ_REMOVE(&sc->event_list, handle, eh_list);
|
|
free(handle, M_MPT2);
|
|
}
|
|
|
|
/*
|
|
* Add a chain element as the next SGE for the specified command.
|
|
* Reset cm_sge and cm_sgesize to indicate all the available space.
|
|
*/
|
|
static int
|
|
mps_add_chain(struct mps_command *cm)
|
|
{
|
|
MPI2_SGE_CHAIN32 *sgc;
|
|
struct mps_chain *chain;
|
|
int space;
|
|
|
|
if (cm->cm_sglsize < MPS_SGC_SIZE)
|
|
panic("MPS: Need SGE Error Code\n");
|
|
|
|
chain = mps_alloc_chain(cm->cm_sc);
|
|
if (chain == NULL)
|
|
return (ENOBUFS);
|
|
|
|
space = (int)cm->cm_sc->facts->IOCRequestFrameSize * 4;
|
|
|
|
/*
|
|
* Note: a double-linked list is used to make it easier to
|
|
* walk for debugging.
|
|
*/
|
|
TAILQ_INSERT_TAIL(&cm->cm_chain_list, chain, chain_link);
|
|
|
|
sgc = (MPI2_SGE_CHAIN32 *)&cm->cm_sge->MpiChain;
|
|
sgc->Length = htole16(space);
|
|
sgc->NextChainOffset = 0;
|
|
/* TODO Looks like bug in Setting sgc->Flags.
|
|
* sgc->Flags = ( MPI2_SGE_FLAGS_CHAIN_ELEMENT | MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
|
|
* MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT
|
|
* This is fine.. because we are not using simple element. In case of
|
|
* MPI2_SGE_CHAIN32, we have seperate Length and Flags feild.
|
|
*/
|
|
sgc->Flags = MPI2_SGE_FLAGS_CHAIN_ELEMENT;
|
|
sgc->Address = htole32(chain->chain_busaddr);
|
|
|
|
cm->cm_sge = (MPI2_SGE_IO_UNION *)&chain->chain->MpiSimple;
|
|
cm->cm_sglsize = space;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Add one scatter-gather element (chain, simple, transaction context)
|
|
* to the scatter-gather list for a command. Maintain cm_sglsize and
|
|
* cm_sge as the remaining size and pointer to the next SGE to fill
|
|
* in, respectively.
|
|
*/
|
|
int
|
|
mps_push_sge(struct mps_command *cm, void *sgep, size_t len, int segsleft)
|
|
{
|
|
MPI2_SGE_TRANSACTION_UNION *tc = sgep;
|
|
MPI2_SGE_SIMPLE64 *sge = sgep;
|
|
int error, type;
|
|
uint32_t saved_buf_len, saved_address_low, saved_address_high;
|
|
|
|
type = (tc->Flags & MPI2_SGE_FLAGS_ELEMENT_MASK);
|
|
|
|
#ifdef INVARIANTS
|
|
switch (type) {
|
|
case MPI2_SGE_FLAGS_TRANSACTION_ELEMENT: {
|
|
if (len != tc->DetailsLength + 4)
|
|
panic("TC %p length %u or %zu?", tc,
|
|
tc->DetailsLength + 4, len);
|
|
}
|
|
break;
|
|
case MPI2_SGE_FLAGS_CHAIN_ELEMENT:
|
|
/* Driver only uses 32-bit chain elements */
|
|
if (len != MPS_SGC_SIZE)
|
|
panic("CHAIN %p length %u or %zu?", sgep,
|
|
MPS_SGC_SIZE, len);
|
|
break;
|
|
case MPI2_SGE_FLAGS_SIMPLE_ELEMENT:
|
|
/* Driver only uses 64-bit SGE simple elements */
|
|
if (len != MPS_SGE64_SIZE)
|
|
panic("SGE simple %p length %u or %zu?", sge,
|
|
MPS_SGE64_SIZE, len);
|
|
if (((le32toh(sge->FlagsLength) >> MPI2_SGE_FLAGS_SHIFT) &
|
|
MPI2_SGE_FLAGS_ADDRESS_SIZE) == 0)
|
|
panic("SGE simple %p not marked 64-bit?", sge);
|
|
|
|
break;
|
|
default:
|
|
panic("Unexpected SGE %p, flags %02x", tc, tc->Flags);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* case 1: 1 more segment, enough room for it
|
|
* case 2: 2 more segments, enough room for both
|
|
* case 3: >=2 more segments, only enough room for 1 and a chain
|
|
* case 4: >=1 more segment, enough room for only a chain
|
|
* case 5: >=1 more segment, no room for anything (error)
|
|
*/
|
|
|
|
/*
|
|
* There should be room for at least a chain element, or this
|
|
* code is buggy. Case (5).
|
|
*/
|
|
if (cm->cm_sglsize < MPS_SGC_SIZE)
|
|
panic("MPS: Need SGE Error Code\n");
|
|
|
|
if (segsleft >= 2 &&
|
|
cm->cm_sglsize < len + MPS_SGC_SIZE + MPS_SGE64_SIZE) {
|
|
/*
|
|
* There are 2 or more segments left to add, and only
|
|
* enough room for 1 and a chain. Case (3).
|
|
*
|
|
* Mark as last element in this chain if necessary.
|
|
*/
|
|
if (type == MPI2_SGE_FLAGS_SIMPLE_ELEMENT) {
|
|
sge->FlagsLength |= htole32(
|
|
MPI2_SGE_FLAGS_LAST_ELEMENT << MPI2_SGE_FLAGS_SHIFT);
|
|
}
|
|
|
|
/*
|
|
* Add the item then a chain. Do the chain now,
|
|
* rather than on the next iteration, to simplify
|
|
* understanding the code.
|
|
*/
|
|
cm->cm_sglsize -= len;
|
|
bcopy(sgep, cm->cm_sge, len);
|
|
cm->cm_sge = (MPI2_SGE_IO_UNION *)((uintptr_t)cm->cm_sge + len);
|
|
return (mps_add_chain(cm));
|
|
}
|
|
|
|
if (segsleft >= 1 && cm->cm_sglsize < len + MPS_SGC_SIZE) {
|
|
/*
|
|
* 1 or more segment, enough room for only a chain.
|
|
* Hope the previous element wasn't a Simple entry
|
|
* that needed to be marked with
|
|
* MPI2_SGE_FLAGS_LAST_ELEMENT. Case (4).
|
|
*/
|
|
if ((error = mps_add_chain(cm)) != 0)
|
|
return (error);
|
|
}
|
|
|
|
#ifdef INVARIANTS
|
|
/* Case 1: 1 more segment, enough room for it. */
|
|
if (segsleft == 1 && cm->cm_sglsize < len)
|
|
panic("1 seg left and no room? %u versus %zu",
|
|
cm->cm_sglsize, len);
|
|
|
|
/* Case 2: 2 more segments, enough room for both */
|
|
if (segsleft == 2 && cm->cm_sglsize < len + MPS_SGE64_SIZE)
|
|
panic("2 segs left and no room? %u versus %zu",
|
|
cm->cm_sglsize, len);
|
|
#endif
|
|
|
|
if (segsleft == 1 && type == MPI2_SGE_FLAGS_SIMPLE_ELEMENT) {
|
|
/*
|
|
* If this is a bi-directional request, need to account for that
|
|
* here. Save the pre-filled sge values. These will be used
|
|
* either for the 2nd SGL or for a single direction SGL. If
|
|
* cm_out_len is non-zero, this is a bi-directional request, so
|
|
* fill in the OUT SGL first, then the IN SGL, otherwise just
|
|
* fill in the IN SGL. Note that at this time, when filling in
|
|
* 2 SGL's for a bi-directional request, they both use the same
|
|
* DMA buffer (same cm command).
|
|
*/
|
|
saved_buf_len = le32toh(sge->FlagsLength) & 0x00FFFFFF;
|
|
saved_address_low = sge->Address.Low;
|
|
saved_address_high = sge->Address.High;
|
|
if (cm->cm_out_len) {
|
|
sge->FlagsLength = htole32(cm->cm_out_len |
|
|
((uint32_t)(MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
|
|
MPI2_SGE_FLAGS_END_OF_BUFFER |
|
|
MPI2_SGE_FLAGS_HOST_TO_IOC |
|
|
MPI2_SGE_FLAGS_64_BIT_ADDRESSING) <<
|
|
MPI2_SGE_FLAGS_SHIFT));
|
|
cm->cm_sglsize -= len;
|
|
bcopy(sgep, cm->cm_sge, len);
|
|
cm->cm_sge = (MPI2_SGE_IO_UNION *)((uintptr_t)cm->cm_sge
|
|
+ len);
|
|
}
|
|
saved_buf_len |=
|
|
((uint32_t)(MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
|
|
MPI2_SGE_FLAGS_END_OF_BUFFER |
|
|
MPI2_SGE_FLAGS_LAST_ELEMENT |
|
|
MPI2_SGE_FLAGS_END_OF_LIST |
|
|
MPI2_SGE_FLAGS_64_BIT_ADDRESSING) <<
|
|
MPI2_SGE_FLAGS_SHIFT);
|
|
if (cm->cm_flags & MPS_CM_FLAGS_DATAIN) {
|
|
saved_buf_len |=
|
|
((uint32_t)(MPI2_SGE_FLAGS_IOC_TO_HOST) <<
|
|
MPI2_SGE_FLAGS_SHIFT);
|
|
} else {
|
|
saved_buf_len |=
|
|
((uint32_t)(MPI2_SGE_FLAGS_HOST_TO_IOC) <<
|
|
MPI2_SGE_FLAGS_SHIFT);
|
|
}
|
|
sge->FlagsLength = htole32(saved_buf_len);
|
|
sge->Address.Low = saved_address_low;
|
|
sge->Address.High = saved_address_high;
|
|
}
|
|
|
|
cm->cm_sglsize -= len;
|
|
bcopy(sgep, cm->cm_sge, len);
|
|
cm->cm_sge = (MPI2_SGE_IO_UNION *)((uintptr_t)cm->cm_sge + len);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Add one dma segment to the scatter-gather list for a command.
|
|
*/
|
|
int
|
|
mps_add_dmaseg(struct mps_command *cm, vm_paddr_t pa, size_t len, u_int flags,
|
|
int segsleft)
|
|
{
|
|
MPI2_SGE_SIMPLE64 sge;
|
|
|
|
/*
|
|
* This driver always uses 64-bit address elements for simplicity.
|
|
*/
|
|
bzero(&sge, sizeof(sge));
|
|
flags |= MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
|
|
MPI2_SGE_FLAGS_64_BIT_ADDRESSING;
|
|
sge.FlagsLength = htole32(len | (flags << MPI2_SGE_FLAGS_SHIFT));
|
|
mps_from_u64(pa, &sge.Address);
|
|
|
|
return (mps_push_sge(cm, &sge, sizeof sge, segsleft));
|
|
}
|
|
|
|
static void
|
|
mps_data_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
|
|
{
|
|
struct mps_softc *sc;
|
|
struct mps_command *cm;
|
|
u_int i, dir, sflags;
|
|
|
|
cm = (struct mps_command *)arg;
|
|
sc = cm->cm_sc;
|
|
|
|
/*
|
|
* In this case, just print out a warning and let the chip tell the
|
|
* user they did the wrong thing.
|
|
*/
|
|
if ((cm->cm_max_segs != 0) && (nsegs > cm->cm_max_segs)) {
|
|
mps_dprint(sc, MPS_ERROR,
|
|
"%s: warning: busdma returned %d segments, "
|
|
"more than the %d allowed\n", __func__, nsegs,
|
|
cm->cm_max_segs);
|
|
}
|
|
|
|
/*
|
|
* Set up DMA direction flags. Bi-directional requests are also handled
|
|
* here. In that case, both direction flags will be set.
|
|
*/
|
|
sflags = 0;
|
|
if (cm->cm_flags & MPS_CM_FLAGS_SMP_PASS) {
|
|
/*
|
|
* We have to add a special case for SMP passthrough, there
|
|
* is no easy way to generically handle it. The first
|
|
* S/G element is used for the command (therefore the
|
|
* direction bit needs to be set). The second one is used
|
|
* for the reply. We'll leave it to the caller to make
|
|
* sure we only have two buffers.
|
|
*/
|
|
/*
|
|
* Even though the busdma man page says it doesn't make
|
|
* sense to have both direction flags, it does in this case.
|
|
* We have one s/g element being accessed in each direction.
|
|
*/
|
|
dir = BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD;
|
|
|
|
/*
|
|
* Set the direction flag on the first buffer in the SMP
|
|
* passthrough request. We'll clear it for the second one.
|
|
*/
|
|
sflags |= MPI2_SGE_FLAGS_DIRECTION |
|
|
MPI2_SGE_FLAGS_END_OF_BUFFER;
|
|
} else if (cm->cm_flags & MPS_CM_FLAGS_DATAOUT) {
|
|
sflags |= MPI2_SGE_FLAGS_HOST_TO_IOC;
|
|
dir = BUS_DMASYNC_PREWRITE;
|
|
} else
|
|
dir = BUS_DMASYNC_PREREAD;
|
|
|
|
for (i = 0; i < nsegs; i++) {
|
|
if ((cm->cm_flags & MPS_CM_FLAGS_SMP_PASS) && (i != 0)) {
|
|
sflags &= ~MPI2_SGE_FLAGS_DIRECTION;
|
|
}
|
|
error = mps_add_dmaseg(cm, segs[i].ds_addr, segs[i].ds_len,
|
|
sflags, nsegs - i);
|
|
if (error != 0) {
|
|
/* Resource shortage, roll back! */
|
|
if (ratecheck(&sc->lastfail, &mps_chainfail_interval))
|
|
mps_dprint(sc, MPS_INFO, "Out of chain frames, "
|
|
"consider increasing hw.mps.max_chains.\n");
|
|
cm->cm_flags |= MPS_CM_FLAGS_CHAIN_FAILED;
|
|
mps_complete_command(sc, cm);
|
|
return;
|
|
}
|
|
}
|
|
|
|
bus_dmamap_sync(sc->buffer_dmat, cm->cm_dmamap, dir);
|
|
mps_enqueue_request(sc, cm);
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
mps_data_cb2(void *arg, bus_dma_segment_t *segs, int nsegs, bus_size_t mapsize,
|
|
int error)
|
|
{
|
|
mps_data_cb(arg, segs, nsegs, error);
|
|
}
|
|
|
|
/*
|
|
* This is the routine to enqueue commands ansynchronously.
|
|
* Note that the only error path here is from bus_dmamap_load(), which can
|
|
* return EINPROGRESS if it is waiting for resources. Other than this, it's
|
|
* assumed that if you have a command in-hand, then you have enough credits
|
|
* to use it.
|
|
*/
|
|
int
|
|
mps_map_command(struct mps_softc *sc, struct mps_command *cm)
|
|
{
|
|
int error = 0;
|
|
|
|
if (cm->cm_flags & MPS_CM_FLAGS_USE_UIO) {
|
|
error = bus_dmamap_load_uio(sc->buffer_dmat, cm->cm_dmamap,
|
|
&cm->cm_uio, mps_data_cb2, cm, 0);
|
|
} else if (cm->cm_flags & MPS_CM_FLAGS_USE_CCB) {
|
|
error = bus_dmamap_load_ccb(sc->buffer_dmat, cm->cm_dmamap,
|
|
cm->cm_data, mps_data_cb, cm, 0);
|
|
} else if ((cm->cm_data != NULL) && (cm->cm_length != 0)) {
|
|
error = bus_dmamap_load(sc->buffer_dmat, cm->cm_dmamap,
|
|
cm->cm_data, cm->cm_length, mps_data_cb, cm, 0);
|
|
} else {
|
|
/* Add a zero-length element as needed */
|
|
if (cm->cm_sge != NULL)
|
|
mps_add_dmaseg(cm, 0, 0, 0, 1);
|
|
mps_enqueue_request(sc, cm);
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* This is the routine to enqueue commands synchronously. An error of
|
|
* EINPROGRESS from mps_map_command() is ignored since the command will
|
|
* be executed and enqueued automatically. Other errors come from msleep().
|
|
*/
|
|
int
|
|
mps_wait_command(struct mps_softc *sc, struct mps_command *cm, int timeout,
|
|
int sleep_flag)
|
|
{
|
|
int error, rc;
|
|
struct timeval cur_time, start_time;
|
|
|
|
if (sc->mps_flags & MPS_FLAGS_DIAGRESET)
|
|
return EBUSY;
|
|
|
|
cm->cm_complete = NULL;
|
|
cm->cm_flags |= (MPS_CM_FLAGS_WAKEUP + MPS_CM_FLAGS_POLLED);
|
|
error = mps_map_command(sc, cm);
|
|
if ((error != 0) && (error != EINPROGRESS))
|
|
return (error);
|
|
|
|
// Check for context and wait for 50 mSec at a time until time has
|
|
// expired or the command has finished. If msleep can't be used, need
|
|
// to poll.
|
|
if (curthread->td_no_sleeping != 0)
|
|
sleep_flag = NO_SLEEP;
|
|
getmicrotime(&start_time);
|
|
if (mtx_owned(&sc->mps_mtx) && sleep_flag == CAN_SLEEP) {
|
|
error = msleep(cm, &sc->mps_mtx, 0, "mpswait", timeout*hz);
|
|
} else {
|
|
while ((cm->cm_flags & MPS_CM_FLAGS_COMPLETE) == 0) {
|
|
mps_intr_locked(sc);
|
|
if (sleep_flag == CAN_SLEEP)
|
|
pause("mpswait", hz/20);
|
|
else
|
|
DELAY(50000);
|
|
|
|
getmicrotime(&cur_time);
|
|
if ((cur_time.tv_sec - start_time.tv_sec) > timeout) {
|
|
error = EWOULDBLOCK;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (error == EWOULDBLOCK) {
|
|
mps_dprint(sc, MPS_FAULT, "Calling Reinit from %s\n", __func__);
|
|
rc = mps_reinit(sc);
|
|
mps_dprint(sc, MPS_FAULT, "Reinit %s\n", (rc == 0) ? "success" :
|
|
"failed");
|
|
error = ETIMEDOUT;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* This is the routine to enqueue a command synchonously and poll for
|
|
* completion. Its use should be rare.
|
|
*/
|
|
int
|
|
mps_request_polled(struct mps_softc *sc, struct mps_command *cm)
|
|
{
|
|
int error, timeout = 0, rc;
|
|
|
|
error = 0;
|
|
|
|
cm->cm_flags |= MPS_CM_FLAGS_POLLED;
|
|
cm->cm_complete = NULL;
|
|
mps_map_command(sc, cm);
|
|
|
|
while ((cm->cm_flags & MPS_CM_FLAGS_COMPLETE) == 0) {
|
|
mps_intr_locked(sc);
|
|
|
|
DELAY(50 * 1000);
|
|
if (timeout++ > 1000) {
|
|
mps_dprint(sc, MPS_FAULT, "polling failed\n");
|
|
error = ETIMEDOUT;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (error) {
|
|
mps_dprint(sc, MPS_FAULT, "Calling Reinit from %s\n", __func__);
|
|
rc = mps_reinit(sc);
|
|
mps_dprint(sc, MPS_FAULT, "Reinit %s\n",
|
|
(rc == 0) ? "success" : "failed");
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* The MPT driver had a verbose interface for config pages. In this driver,
|
|
* reduce it to much simplier terms, similar to the Linux driver.
|
|
*/
|
|
int
|
|
mps_read_config_page(struct mps_softc *sc, struct mps_config_params *params)
|
|
{
|
|
MPI2_CONFIG_REQUEST *req;
|
|
struct mps_command *cm;
|
|
int error;
|
|
|
|
if (sc->mps_flags & MPS_FLAGS_BUSY) {
|
|
return (EBUSY);
|
|
}
|
|
|
|
cm = mps_alloc_command(sc);
|
|
if (cm == NULL) {
|
|
return (EBUSY);
|
|
}
|
|
|
|
req = (MPI2_CONFIG_REQUEST *)cm->cm_req;
|
|
req->Function = MPI2_FUNCTION_CONFIG;
|
|
req->Action = params->action;
|
|
req->SGLFlags = 0;
|
|
req->ChainOffset = 0;
|
|
req->PageAddress = params->page_address;
|
|
if (params->hdr.Struct.PageType == MPI2_CONFIG_PAGETYPE_EXTENDED) {
|
|
MPI2_CONFIG_EXTENDED_PAGE_HEADER *hdr;
|
|
|
|
hdr = ¶ms->hdr.Ext;
|
|
req->ExtPageType = hdr->ExtPageType;
|
|
req->ExtPageLength = hdr->ExtPageLength;
|
|
req->Header.PageType = MPI2_CONFIG_PAGETYPE_EXTENDED;
|
|
req->Header.PageLength = 0; /* Must be set to zero */
|
|
req->Header.PageNumber = hdr->PageNumber;
|
|
req->Header.PageVersion = hdr->PageVersion;
|
|
} else {
|
|
MPI2_CONFIG_PAGE_HEADER *hdr;
|
|
|
|
hdr = ¶ms->hdr.Struct;
|
|
req->Header.PageType = hdr->PageType;
|
|
req->Header.PageNumber = hdr->PageNumber;
|
|
req->Header.PageLength = hdr->PageLength;
|
|
req->Header.PageVersion = hdr->PageVersion;
|
|
}
|
|
|
|
cm->cm_data = params->buffer;
|
|
cm->cm_length = params->length;
|
|
cm->cm_sge = &req->PageBufferSGE;
|
|
cm->cm_sglsize = sizeof(MPI2_SGE_IO_UNION);
|
|
cm->cm_flags = MPS_CM_FLAGS_SGE_SIMPLE | MPS_CM_FLAGS_DATAIN;
|
|
cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
|
|
|
|
cm->cm_complete_data = params;
|
|
if (params->callback != NULL) {
|
|
cm->cm_complete = mps_config_complete;
|
|
return (mps_map_command(sc, cm));
|
|
} else {
|
|
error = mps_wait_command(sc, cm, 0, CAN_SLEEP);
|
|
if (error) {
|
|
mps_dprint(sc, MPS_FAULT,
|
|
"Error %d reading config page\n", error);
|
|
mps_free_command(sc, cm);
|
|
return (error);
|
|
}
|
|
mps_config_complete(sc, cm);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
mps_write_config_page(struct mps_softc *sc, struct mps_config_params *params)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
static void
|
|
mps_config_complete(struct mps_softc *sc, struct mps_command *cm)
|
|
{
|
|
MPI2_CONFIG_REPLY *reply;
|
|
struct mps_config_params *params;
|
|
|
|
MPS_FUNCTRACE(sc);
|
|
params = cm->cm_complete_data;
|
|
|
|
if (cm->cm_data != NULL) {
|
|
bus_dmamap_sync(sc->buffer_dmat, cm->cm_dmamap,
|
|
BUS_DMASYNC_POSTREAD);
|
|
bus_dmamap_unload(sc->buffer_dmat, cm->cm_dmamap);
|
|
}
|
|
|
|
/*
|
|
* XXX KDM need to do more error recovery? This results in the
|
|
* device in question not getting probed.
|
|
*/
|
|
if ((cm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) {
|
|
params->status = MPI2_IOCSTATUS_BUSY;
|
|
goto done;
|
|
}
|
|
|
|
reply = (MPI2_CONFIG_REPLY *)cm->cm_reply;
|
|
if (reply == NULL) {
|
|
params->status = MPI2_IOCSTATUS_BUSY;
|
|
goto done;
|
|
}
|
|
params->status = reply->IOCStatus;
|
|
if (params->hdr.Ext.ExtPageType != 0) {
|
|
params->hdr.Ext.ExtPageType = reply->ExtPageType;
|
|
params->hdr.Ext.ExtPageLength = reply->ExtPageLength;
|
|
} else {
|
|
params->hdr.Struct.PageType = reply->Header.PageType;
|
|
params->hdr.Struct.PageNumber = reply->Header.PageNumber;
|
|
params->hdr.Struct.PageLength = reply->Header.PageLength;
|
|
params->hdr.Struct.PageVersion = reply->Header.PageVersion;
|
|
}
|
|
|
|
done:
|
|
mps_free_command(sc, cm);
|
|
if (params->callback != NULL)
|
|
params->callback(sc, params);
|
|
|
|
return;
|
|
}
|