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-rw-r--r--sys/dev/aac/aac.c2756
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diff --git a/sys/dev/aac/aac.c b/sys/dev/aac/aac.c
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+++ b/sys/dev/aac/aac.c
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+/*-
+ * Copyright (c) 2000 Michael Smith
+ * Copyright (c) 2001 Scott Long
+ * Copyright (c) 2000 BSDi
+ * Copyright (c) 2001 Adaptec, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Driver for the Adaptec 'FSA' family of PCI/SCSI RAID adapters.
+ */
+
+#include "opt_aac.h"
+
+/* #include <stddef.h> */
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <sys/kthread.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/sysctl.h>
+#include <sys/poll.h>
+#if __FreeBSD_version >= 500005
+#include <sys/selinfo.h>
+#else
+#include <sys/select.h>
+#endif
+
+#include <dev/aac/aac_compat.h>
+
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/devicestat.h>
+#include <sys/disk.h>
+#include <sys/signalvar.h>
+#include <sys/time.h>
+#include <sys/eventhandler.h>
+
+#include <machine/bus_memio.h>
+#include <machine/bus.h>
+#include <machine/resource.h>
+
+#include <dev/aac/aacreg.h>
+#include <dev/aac/aac_ioctl.h>
+#include <dev/aac/aacvar.h>
+#include <dev/aac/aac_tables.h>
+#include <dev/aac/aac_cam.h>
+
+static void aac_startup(void *arg);
+static void aac_add_container(struct aac_softc *sc,
+ struct aac_mntinforesp *mir, int f);
+static void aac_get_bus_info(struct aac_softc *sc);
+
+/* Command Processing */
+static void aac_timeout(struct aac_softc *sc);
+static int aac_start(struct aac_command *cm);
+static void aac_complete(void *context, int pending);
+static int aac_bio_command(struct aac_softc *sc, struct aac_command **cmp);
+static void aac_bio_complete(struct aac_command *cm);
+static int aac_wait_command(struct aac_command *cm, int timeout);
+static void aac_host_command(struct aac_softc *sc);
+static void aac_host_response(struct aac_softc *sc);
+
+/* Command Buffer Management */
+static void aac_map_command_helper(void *arg, bus_dma_segment_t *segs,
+ int nseg, int error);
+static int aac_alloc_commands(struct aac_softc *sc);
+static void aac_free_commands(struct aac_softc *sc);
+static void aac_map_command(struct aac_command *cm);
+static void aac_unmap_command(struct aac_command *cm);
+
+/* Hardware Interface */
+static void aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg,
+ int error);
+static int aac_check_firmware(struct aac_softc *sc);
+static int aac_init(struct aac_softc *sc);
+static int aac_sync_command(struct aac_softc *sc, u_int32_t command,
+ u_int32_t arg0, u_int32_t arg1, u_int32_t arg2,
+ u_int32_t arg3, u_int32_t *sp);
+static int aac_enqueue_fib(struct aac_softc *sc, int queue,
+ struct aac_command *cm);
+static int aac_dequeue_fib(struct aac_softc *sc, int queue,
+ u_int32_t *fib_size, struct aac_fib **fib_addr);
+static int aac_enqueue_response(struct aac_softc *sc, int queue,
+ struct aac_fib *fib);
+
+/* Falcon/PPC interface */
+static int aac_fa_get_fwstatus(struct aac_softc *sc);
+static void aac_fa_qnotify(struct aac_softc *sc, int qbit);
+static int aac_fa_get_istatus(struct aac_softc *sc);
+static void aac_fa_clear_istatus(struct aac_softc *sc, int mask);
+static void aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command,
+ u_int32_t arg0, u_int32_t arg1,
+ u_int32_t arg2, u_int32_t arg3);
+static int aac_fa_get_mailboxstatus(struct aac_softc *sc);
+static void aac_fa_set_interrupts(struct aac_softc *sc, int enable);
+
+struct aac_interface aac_fa_interface = {
+ aac_fa_get_fwstatus,
+ aac_fa_qnotify,
+ aac_fa_get_istatus,
+ aac_fa_clear_istatus,
+ aac_fa_set_mailbox,
+ aac_fa_get_mailboxstatus,
+ aac_fa_set_interrupts
+};
+
+/* StrongARM interface */
+static int aac_sa_get_fwstatus(struct aac_softc *sc);
+static void aac_sa_qnotify(struct aac_softc *sc, int qbit);
+static int aac_sa_get_istatus(struct aac_softc *sc);
+static void aac_sa_clear_istatus(struct aac_softc *sc, int mask);
+static void aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command,
+ u_int32_t arg0, u_int32_t arg1,
+ u_int32_t arg2, u_int32_t arg3);
+static int aac_sa_get_mailboxstatus(struct aac_softc *sc);
+static void aac_sa_set_interrupts(struct aac_softc *sc, int enable);
+
+struct aac_interface aac_sa_interface = {
+ aac_sa_get_fwstatus,
+ aac_sa_qnotify,
+ aac_sa_get_istatus,
+ aac_sa_clear_istatus,
+ aac_sa_set_mailbox,
+ aac_sa_get_mailboxstatus,
+ aac_sa_set_interrupts
+};
+
+/* i960Rx interface */
+static int aac_rx_get_fwstatus(struct aac_softc *sc);
+static void aac_rx_qnotify(struct aac_softc *sc, int qbit);
+static int aac_rx_get_istatus(struct aac_softc *sc);
+static void aac_rx_clear_istatus(struct aac_softc *sc, int mask);
+static void aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command,
+ u_int32_t arg0, u_int32_t arg1,
+ u_int32_t arg2, u_int32_t arg3);
+static int aac_rx_get_mailboxstatus(struct aac_softc *sc);
+static void aac_rx_set_interrupts(struct aac_softc *sc, int enable);
+
+struct aac_interface aac_rx_interface = {
+ aac_rx_get_fwstatus,
+ aac_rx_qnotify,
+ aac_rx_get_istatus,
+ aac_rx_clear_istatus,
+ aac_rx_set_mailbox,
+ aac_rx_get_mailboxstatus,
+ aac_rx_set_interrupts
+};
+
+/* Debugging and Diagnostics */
+static void aac_describe_controller(struct aac_softc *sc);
+static char *aac_describe_code(struct aac_code_lookup *table,
+ u_int32_t code);
+
+/* Management Interface */
+static d_open_t aac_open;
+static d_close_t aac_close;
+static d_ioctl_t aac_ioctl;
+static d_poll_t aac_poll;
+static int aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib);
+static void aac_handle_aif(struct aac_softc *sc,
+ struct aac_fib *fib);
+static int aac_rev_check(struct aac_softc *sc, caddr_t udata);
+static int aac_getnext_aif(struct aac_softc *sc, caddr_t arg);
+static int aac_return_aif(struct aac_softc *sc, caddr_t uptr);
+static int aac_query_disk(struct aac_softc *sc, caddr_t uptr);
+
+#define AAC_CDEV_MAJOR 150
+
+static struct cdevsw aac_cdevsw = {
+ aac_open, /* open */
+ aac_close, /* close */
+ noread, /* read */
+ nowrite, /* write */
+ aac_ioctl, /* ioctl */
+ aac_poll, /* poll */
+ nommap, /* mmap */
+ nostrategy, /* strategy */
+ "aac", /* name */
+ AAC_CDEV_MAJOR, /* major */
+ nodump, /* dump */
+ nopsize, /* psize */
+ 0, /* flags */
+#if __FreeBSD_version < 500005
+ -1, /* bmaj */
+#endif
+};
+
+MALLOC_DEFINE(M_AACBUF, "aacbuf", "Buffers for the AAC driver");
+
+/* sysctl node */
+SYSCTL_NODE(_hw, OID_AUTO, aac, CTLFLAG_RD, 0, "AAC driver parameters");
+
+/*
+ * Device Interface
+ */
+
+/*
+ * Initialise the controller and softc
+ */
+int
+aac_attach(struct aac_softc *sc)
+{
+ int error, unit;
+
+ debug_called(1);
+
+ /*
+ * Initialise per-controller queues.
+ */
+ aac_initq_free(sc);
+ aac_initq_ready(sc);
+ aac_initq_busy(sc);
+ aac_initq_complete(sc);
+ aac_initq_bio(sc);
+
+#if __FreeBSD_version >= 500005
+ /*
+ * Initialise command-completion task.
+ */
+ TASK_INIT(&sc->aac_task_complete, 0, aac_complete, sc);
+#endif
+
+ /* disable interrupts before we enable anything */
+ AAC_MASK_INTERRUPTS(sc);
+
+ /* mark controller as suspended until we get ourselves organised */
+ sc->aac_state |= AAC_STATE_SUSPEND;
+
+ /*
+ * Check that the firmware on the card is supported.
+ */
+ if ((error = aac_check_firmware(sc)) != 0)
+ return(error);
+
+ /*
+ * Allocate command structures.
+ */
+ if ((error = aac_alloc_commands(sc)) != 0)
+ return(error);
+
+ /* Init the sync fib lock */
+ AAC_LOCK_INIT(&sc->aac_sync_lock, "AAC sync FIB lock");
+
+ /*
+ * Initialise the adapter.
+ */
+ if ((error = aac_init(sc)) != 0)
+ return(error);
+
+ /*
+ * Print a little information about the controller.
+ */
+ aac_describe_controller(sc);
+
+ /*
+ * Register to probe our containers later.
+ */
+ TAILQ_INIT(&sc->aac_container_tqh);
+ AAC_LOCK_INIT(&sc->aac_container_lock, "AAC container lock");
+
+ /*
+ * Lock for the AIF queue
+ */
+ AAC_LOCK_INIT(&sc->aac_aifq_lock, "AAC AIF lock");
+
+ sc->aac_ich.ich_func = aac_startup;
+ sc->aac_ich.ich_arg = sc;
+ if (config_intrhook_establish(&sc->aac_ich) != 0) {
+ device_printf(sc->aac_dev,
+ "can't establish configuration hook\n");
+ return(ENXIO);
+ }
+
+ /*
+ * Make the control device.
+ */
+ unit = device_get_unit(sc->aac_dev);
+ sc->aac_dev_t = make_dev(&aac_cdevsw, unit, UID_ROOT, GID_WHEEL, 0644,
+ "aac%d", unit);
+#if __FreeBSD_version > 500005
+ (void)make_dev_alias(sc->aac_dev_t, "afa%d", unit);
+ (void)make_dev_alias(sc->aac_dev_t, "hpn%d", unit);
+#endif
+ sc->aac_dev_t->si_drv1 = sc;
+
+ /* Create the AIF thread */
+#if __FreeBSD_version > 500005
+ if (kthread_create((void(*)(void *))aac_host_command, sc,
+ &sc->aifthread, 0, 0, "aac%daif", unit))
+#else
+ if (kthread_create((void(*)(void *))aac_host_command, sc,
+ &sc->aifthread, "aac%daif", unit))
+#endif
+ panic("Could not create AIF thread\n");
+
+ /* Register the shutdown method to only be called post-dump */
+ if ((EVENTHANDLER_REGISTER(shutdown_final, aac_shutdown, sc->aac_dev,
+ SHUTDOWN_PRI_DEFAULT)) == NULL)
+ device_printf(sc->aac_dev, "shutdown event registration failed\n");
+
+ /* Register with CAM for the non-DASD devices */
+ if (!(sc->quirks & AAC_QUIRK_NOCAM))
+ aac_get_bus_info(sc);
+
+ return(0);
+}
+
+/*
+ * Probe for containers, create disks.
+ */
+static void
+aac_startup(void *arg)
+{
+ struct aac_softc *sc;
+ struct aac_fib *fib;
+ struct aac_mntinfo *mi;
+ struct aac_mntinforesp *mir = NULL;
+ int i = 0;
+
+ debug_called(1);
+
+ sc = (struct aac_softc *)arg;
+
+ /* disconnect ourselves from the intrhook chain */
+ config_intrhook_disestablish(&sc->aac_ich);
+
+ aac_alloc_sync_fib(sc, &fib, 0);
+ mi = (struct aac_mntinfo *)&fib->data[0];
+
+ /* loop over possible containers */
+ do {
+ /* request information on this container */
+ bzero(mi, sizeof(struct aac_mntinfo));
+ mi->Command = VM_NameServe;
+ mi->MntType = FT_FILESYS;
+ mi->MntCount = i;
+ if (aac_sync_fib(sc, ContainerCommand, 0, fib,
+ sizeof(struct aac_mntinfo))) {
+ debug(2, "error probing container %d", i);
+ continue;
+ }
+
+ mir = (struct aac_mntinforesp *)&fib->data[0];
+ aac_add_container(sc, mir, 0);
+ i++;
+ } while ((i < mir->MntRespCount) && (i < AAC_MAX_CONTAINERS));
+
+ aac_release_sync_fib(sc);
+
+ /* poke the bus to actually attach the child devices */
+ if (bus_generic_attach(sc->aac_dev))
+ device_printf(sc->aac_dev, "bus_generic_attach failed\n");
+
+ /* mark the controller up */
+ sc->aac_state &= ~AAC_STATE_SUSPEND;
+
+ /* enable interrupts now */
+ AAC_UNMASK_INTERRUPTS(sc);
+
+ /* enable the timeout watchdog */
+ timeout((timeout_t*)aac_timeout, sc, AAC_PERIODIC_INTERVAL * hz);
+}
+
+/*
+ * Create a device to respresent a new container
+ */
+static void
+aac_add_container(struct aac_softc *sc, struct aac_mntinforesp *mir, int f)
+{
+ struct aac_container *co;
+ device_t child;
+
+ /*
+ * Check container volume type for validity. Note that many of
+ * the possible types may never show up.
+ */
+ if ((mir->Status == ST_OK) && (mir->MntTable[0].VolType != CT_NONE)) {
+ MALLOC(co, struct aac_container *, sizeof *co, M_AACBUF,
+ M_NOWAIT);
+ if (co == NULL)
+ panic("Out of memory?!\n");
+ debug(1, "id %x name '%.16s' size %u type %d",
+ mir->MntTable[0].ObjectId,
+ mir->MntTable[0].FileSystemName,
+ mir->MntTable[0].Capacity, mir->MntTable[0].VolType);
+
+ if ((child = device_add_child(sc->aac_dev, "aacd", -1)) == NULL)
+ device_printf(sc->aac_dev, "device_add_child failed\n");
+ else
+ device_set_ivars(child, co);
+ device_set_desc(child, aac_describe_code(aac_container_types,
+ mir->MntTable[0].VolType));
+ co->co_disk = child;
+ co->co_found = f;
+ bcopy(&mir->MntTable[0], &co->co_mntobj,
+ sizeof(struct aac_mntobj));
+ AAC_LOCK_ACQUIRE(&sc->aac_container_lock);
+ TAILQ_INSERT_TAIL(&sc->aac_container_tqh, co, co_link);
+ AAC_LOCK_RELEASE(&sc->aac_container_lock);
+ }
+}
+
+/*
+ * Free all of the resources associated with (sc)
+ *
+ * Should not be called if the controller is active.
+ */
+void
+aac_free(struct aac_softc *sc)
+{
+ debug_called(1);
+
+ /* remove the control device */
+ if (sc->aac_dev_t != NULL)
+ destroy_dev(sc->aac_dev_t);
+
+ /* throw away any FIB buffers, discard the FIB DMA tag */
+ if (sc->aac_fibs != NULL)
+ aac_free_commands(sc);
+ if (sc->aac_fib_dmat)
+ bus_dma_tag_destroy(sc->aac_fib_dmat);
+
+ /* destroy the common area */
+ if (sc->aac_common) {
+ bus_dmamap_unload(sc->aac_common_dmat, sc->aac_common_dmamap);
+ bus_dmamem_free(sc->aac_common_dmat, sc->aac_common,
+ sc->aac_common_dmamap);
+ }
+ if (sc->aac_common_dmat)
+ bus_dma_tag_destroy(sc->aac_common_dmat);
+
+ /* disconnect the interrupt handler */
+ if (sc->aac_intr)
+ bus_teardown_intr(sc->aac_dev, sc->aac_irq, sc->aac_intr);
+ if (sc->aac_irq != NULL)
+ bus_release_resource(sc->aac_dev, SYS_RES_IRQ, sc->aac_irq_rid,
+ sc->aac_irq);
+
+ /* destroy data-transfer DMA tag */
+ if (sc->aac_buffer_dmat)
+ bus_dma_tag_destroy(sc->aac_buffer_dmat);
+
+ /* destroy the parent DMA tag */
+ if (sc->aac_parent_dmat)
+ bus_dma_tag_destroy(sc->aac_parent_dmat);
+
+ /* release the register window mapping */
+ if (sc->aac_regs_resource != NULL)
+ bus_release_resource(sc->aac_dev, SYS_RES_MEMORY,
+ sc->aac_regs_rid, sc->aac_regs_resource);
+}
+
+/*
+ * Disconnect from the controller completely, in preparation for unload.
+ */
+int
+aac_detach(device_t dev)
+{
+ struct aac_softc *sc;
+#if AAC_BROKEN
+ int error;
+#endif
+
+ debug_called(1);
+
+ sc = device_get_softc(dev);
+
+ if (sc->aac_state & AAC_STATE_OPEN)
+ return(EBUSY);
+
+#if AAC_BROKEN
+ if (sc->aifflags & AAC_AIFFLAGS_RUNNING) {
+ sc->aifflags |= AAC_AIFFLAGS_EXIT;
+ wakeup(sc->aifthread);
+ tsleep(sc->aac_dev, PUSER | PCATCH, "aacdch", 30 * hz);
+ }
+
+ if (sc->aifflags & AAC_AIFFLAGS_RUNNING)
+ panic("Cannot shutdown AIF thread\n");
+
+ if ((error = aac_shutdown(dev)))
+ return(error);
+
+ aac_free(sc);
+
+ return(0);
+#else
+ return (EBUSY);
+#endif
+}
+
+/*
+ * Bring the controller down to a dormant state and detach all child devices.
+ *
+ * This function is called before detach or system shutdown.
+ *
+ * Note that we can assume that the bioq on the controller is empty, as we won't
+ * allow shutdown if any device is open.
+ */
+int
+aac_shutdown(device_t dev)
+{
+ struct aac_softc *sc;
+ struct aac_fib *fib;
+ struct aac_close_command *cc;
+ int s;
+
+ debug_called(1);
+
+ sc = device_get_softc(dev);
+
+ s = splbio();
+
+ sc->aac_state |= AAC_STATE_SUSPEND;
+
+ /*
+ * Send a Container shutdown followed by a HostShutdown FIB to the
+ * controller to convince it that we don't want to talk to it anymore.
+ * We've been closed and all I/O completed already
+ */
+ device_printf(sc->aac_dev, "shutting down controller...");
+
+ aac_alloc_sync_fib(sc, &fib, AAC_SYNC_LOCK_FORCE);
+ cc = (struct aac_close_command *)&fib->data[0];
+
+ bzero(cc, sizeof(struct aac_close_command));
+ cc->Command = VM_CloseAll;
+ cc->ContainerId = 0xffffffff;
+ if (aac_sync_fib(sc, ContainerCommand, 0, fib,
+ sizeof(struct aac_close_command)))
+ printf("FAILED.\n");
+ else {
+ fib->data[0] = 0;
+ /*
+ * XXX Issuing this command to the controller makes it shut down
+ * but also keeps it from coming back up without a reset of the
+ * PCI bus. This is not desirable if you are just unloading the
+ * driver module with the intent to reload it later.
+ */
+ if (aac_sync_fib(sc, FsaHostShutdown, AAC_FIBSTATE_SHUTDOWN,
+ fib, 1)) {
+ printf("FAILED.\n");
+ } else {
+ printf("done.\n");
+ }
+ }
+
+ AAC_MASK_INTERRUPTS(sc);
+
+ splx(s);
+ return(0);
+}
+
+/*
+ * Bring the controller to a quiescent state, ready for system suspend.
+ */
+int
+aac_suspend(device_t dev)
+{
+ struct aac_softc *sc;
+ int s;
+
+ debug_called(1);
+
+ sc = device_get_softc(dev);
+
+ s = splbio();
+
+ sc->aac_state |= AAC_STATE_SUSPEND;
+
+ AAC_MASK_INTERRUPTS(sc);
+ splx(s);
+ return(0);
+}
+
+/*
+ * Bring the controller back to a state ready for operation.
+ */
+int
+aac_resume(device_t dev)
+{
+ struct aac_softc *sc;
+
+ debug_called(1);
+
+ sc = device_get_softc(dev);
+
+ sc->aac_state &= ~AAC_STATE_SUSPEND;
+ AAC_UNMASK_INTERRUPTS(sc);
+ return(0);
+}
+
+/*
+ * Take an interrupt.
+ */
+void
+aac_intr(void *arg)
+{
+ struct aac_softc *sc;
+ u_int16_t reason;
+
+ debug_called(2);
+
+ sc = (struct aac_softc *)arg;
+
+ reason = AAC_GET_ISTATUS(sc);
+
+ /* controller wants to talk to the log */
+ if (reason & AAC_DB_PRINTF) {
+ AAC_CLEAR_ISTATUS(sc, AAC_DB_PRINTF);
+ aac_print_printf(sc);
+ }
+
+ /* controller has a message for us? */
+ if (reason & AAC_DB_COMMAND_READY) {
+ AAC_CLEAR_ISTATUS(sc, AAC_DB_COMMAND_READY);
+ /* XXX What happens if the thread is already awake? */
+ if (sc->aifflags & AAC_AIFFLAGS_RUNNING) {
+ sc->aifflags |= AAC_AIFFLAGS_PENDING;
+ wakeup(sc->aifthread);
+ }
+ }
+
+ /* controller has a response for us? */
+ if (reason & AAC_DB_RESPONSE_READY) {
+ AAC_CLEAR_ISTATUS(sc, AAC_DB_RESPONSE_READY);
+ aac_host_response(sc);
+ }
+
+ /*
+ * spurious interrupts that we don't use - reset the mask and clear the
+ * interrupts
+ */
+ if (reason & (AAC_DB_COMMAND_NOT_FULL | AAC_DB_RESPONSE_NOT_FULL)) {
+ AAC_UNMASK_INTERRUPTS(sc);
+ AAC_CLEAR_ISTATUS(sc, AAC_DB_COMMAND_NOT_FULL |
+ AAC_DB_RESPONSE_NOT_FULL);
+ }
+};
+
+/*
+ * Command Processing
+ */
+
+/*
+ * Start as much queued I/O as possible on the controller
+ */
+void
+aac_startio(struct aac_softc *sc)
+{
+ struct aac_command *cm;
+
+ debug_called(2);
+
+ for (;;) {
+ /*
+ * Try to get a command that's been put off for lack of
+ * resources
+ */
+ cm = aac_dequeue_ready(sc);
+
+ /*
+ * Try to build a command off the bio queue (ignore error
+ * return)
+ */
+ if (cm == NULL)
+ aac_bio_command(sc, &cm);
+
+ /* nothing to do? */
+ if (cm == NULL)
+ break;
+
+ /* try to give the command to the controller */
+ if (aac_start(cm) == EBUSY) {
+ /* put it on the ready queue for later */
+ aac_requeue_ready(cm);
+ break;
+ }
+ }
+}
+
+/*
+ * Deliver a command to the controller; allocate controller resources at the
+ * last moment when possible.
+ */
+static int
+aac_start(struct aac_command *cm)
+{
+ struct aac_softc *sc;
+ int error;
+
+ debug_called(2);
+
+ sc = cm->cm_sc;
+
+ /* get the command mapped */
+ aac_map_command(cm);
+
+ /* fix up the address values in the FIB */
+ cm->cm_fib->Header.SenderFibAddress = (u_int32_t)cm->cm_fib;
+ cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys;
+
+ /* save a pointer to the command for speedy reverse-lookup */
+ cm->cm_fib->Header.SenderData = (u_int32_t)cm; /* XXX 64-bit physical
+ * address issue */
+
+ /* put the FIB on the outbound queue */
+ error = aac_enqueue_fib(sc, cm->cm_queue, cm);
+ return(error);
+}
+
+/*
+ * Handle notification of one or more FIBs coming from the controller.
+ */
+static void
+aac_host_command(struct aac_softc *sc)
+{
+ struct aac_fib *fib;
+ u_int32_t fib_size;
+ int size;
+
+ debug_called(2);
+
+ sc->aifflags |= AAC_AIFFLAGS_RUNNING;
+
+ while (!(sc->aifflags & AAC_AIFFLAGS_EXIT)) {
+ if (!(sc->aifflags & AAC_AIFFLAGS_PENDING))
+ tsleep(sc->aifthread, PRIBIO, "aifthd", 15 * hz);
+
+ sc->aifflags &= ~AAC_AIFFLAGS_PENDING;
+ for (;;) {
+ if (aac_dequeue_fib(sc, AAC_HOST_NORM_CMD_QUEUE,
+ &fib_size, &fib))
+ break; /* nothing to do */
+
+ AAC_PRINT_FIB(sc, fib);
+
+ switch (fib->Header.Command) {
+ case AifRequest:
+ aac_handle_aif(sc, fib);
+ break;
+ default:
+ device_printf(sc->aac_dev, "unknown command "
+ "from controller\n");
+ break;
+ }
+
+ /* Return the AIF to the controller. */
+ if ((fib->Header.XferState == 0) ||
+ (fib->Header.StructType != AAC_FIBTYPE_TFIB))
+ break;
+
+ if (fib->Header.XferState & AAC_FIBSTATE_FROMADAP) {
+ fib->Header.XferState |= AAC_FIBSTATE_DONEHOST;
+ *(AAC_FSAStatus*)fib->data = ST_OK;
+
+ /* XXX Compute the Size field? */
+ size = fib->Header.Size;
+ if (size > sizeof(struct aac_fib)) {
+ size = sizeof(struct aac_fib);
+ fib->Header.Size = size;
+ }
+ /*
+ * Since we did not generate this command, it
+ * cannot go through the normal
+ * enqueue->startio chain.
+ */
+ aac_enqueue_response(sc,
+ AAC_ADAP_NORM_RESP_QUEUE,
+ fib);
+ }
+ }
+ }
+ sc->aifflags &= ~AAC_AIFFLAGS_RUNNING;
+ wakeup(sc->aac_dev);
+
+#if __FreeBSD_version > 500005
+ mtx_lock(&Giant);
+#endif
+ kthread_exit(0);
+}
+
+/*
+ * Handle notification of one or more FIBs completed by the controller
+ */
+static void
+aac_host_response(struct aac_softc *sc)
+{
+ struct aac_command *cm;
+ struct aac_fib *fib;
+ u_int32_t fib_size;
+
+ debug_called(2);
+
+ for (;;) {
+ /* look for completed FIBs on our queue */
+ if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size,
+ &fib))
+ break; /* nothing to do */
+
+ /* get the command, unmap and queue for later processing */
+ cm = (struct aac_command *)fib->Header.SenderData;
+ if (cm == NULL) {
+ AAC_PRINT_FIB(sc, fib);
+ } else {
+ aac_remove_busy(cm);
+ aac_unmap_command(cm); /* XXX defer? */
+ aac_enqueue_complete(cm);
+ }
+ }
+
+ /* handle completion processing */
+#if __FreeBSD_version >= 500005
+ taskqueue_enqueue(taskqueue_swi, &sc->aac_task_complete);
+#else
+ aac_complete(sc, 0);
+#endif
+}
+
+/*
+ * Process completed commands.
+ */
+static void
+aac_complete(void *context, int pending)
+{
+ struct aac_softc *sc;
+ struct aac_command *cm;
+
+ debug_called(2);
+
+ sc = (struct aac_softc *)context;
+
+ /* pull completed commands off the queue */
+ for (;;) {
+ cm = aac_dequeue_complete(sc);
+ if (cm == NULL)
+ break;
+ cm->cm_flags |= AAC_CMD_COMPLETED;
+
+ /* is there a completion handler? */
+ if (cm->cm_complete != NULL) {
+ cm->cm_complete(cm);
+ } else {
+ /* assume that someone is sleeping on this command */
+ wakeup(cm);
+ }
+ }
+
+ /* see if we can start some more I/O */
+ aac_startio(sc);
+}
+
+/*
+ * Handle a bio submitted from a disk device.
+ */
+void
+aac_submit_bio(struct bio *bp)
+{
+ struct aac_disk *ad;
+ struct aac_softc *sc;
+
+ debug_called(2);
+
+ ad = (struct aac_disk *)bp->bio_dev->si_drv1;
+ sc = ad->ad_controller;
+
+ /* queue the BIO and try to get some work done */
+ aac_enqueue_bio(sc, bp);
+ aac_startio(sc);
+}
+
+/*
+ * Get a bio and build a command to go with it.
+ */
+static int
+aac_bio_command(struct aac_softc *sc, struct aac_command **cmp)
+{
+ struct aac_command *cm;
+ struct aac_fib *fib;
+ struct aac_blockread *br;
+ struct aac_blockwrite *bw;
+ struct aac_disk *ad;
+ struct bio *bp;
+
+ debug_called(2);
+
+ /* get the resources we will need */
+ cm = NULL;
+ if ((bp = aac_dequeue_bio(sc)) == NULL)
+ goto fail;
+ if (aac_alloc_command(sc, &cm)) /* get a command */
+ goto fail;
+
+ /* fill out the command */
+ cm->cm_data = (void *)bp->bio_data;
+ cm->cm_datalen = bp->bio_bcount;
+ cm->cm_complete = aac_bio_complete;
+ cm->cm_private = bp;
+ cm->cm_timestamp = time_second;
+ cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE;
+
+ /* build the FIB */
+ fib = cm->cm_fib;
+ fib->Header.XferState =
+ AAC_FIBSTATE_HOSTOWNED |
+ AAC_FIBSTATE_INITIALISED |
+ AAC_FIBSTATE_FROMHOST |
+ AAC_FIBSTATE_REXPECTED |
+ AAC_FIBSTATE_NORM;
+ fib->Header.Command = ContainerCommand;
+ fib->Header.Size = sizeof(struct aac_fib_header);
+
+ /* build the read/write request */
+ ad = (struct aac_disk *)bp->bio_dev->si_drv1;
+ if (BIO_IS_READ(bp)) {
+ br = (struct aac_blockread *)&fib->data[0];
+ br->Command = VM_CtBlockRead;
+ br->ContainerId = ad->ad_container->co_mntobj.ObjectId;
+ br->BlockNumber = bp->bio_pblkno;
+ br->ByteCount = bp->bio_bcount;
+ fib->Header.Size += sizeof(struct aac_blockread);
+ cm->cm_sgtable = &br->SgMap;
+ cm->cm_flags |= AAC_CMD_DATAIN;
+ } else {
+ bw = (struct aac_blockwrite *)&fib->data[0];
+ bw->Command = VM_CtBlockWrite;
+ bw->ContainerId = ad->ad_container->co_mntobj.ObjectId;
+ bw->BlockNumber = bp->bio_pblkno;
+ bw->ByteCount = bp->bio_bcount;
+ bw->Stable = CUNSTABLE; /* XXX what's appropriate here? */
+ fib->Header.Size += sizeof(struct aac_blockwrite);
+ cm->cm_flags |= AAC_CMD_DATAOUT;
+ cm->cm_sgtable = &bw->SgMap;
+ }
+
+ *cmp = cm;
+ return(0);
+
+fail:
+ if (bp != NULL)
+ aac_enqueue_bio(sc, bp);
+ if (cm != NULL)
+ aac_release_command(cm);
+ return(ENOMEM);
+}
+
+/*
+ * Handle a bio-instigated command that has been completed.
+ */
+static void
+aac_bio_complete(struct aac_command *cm)
+{
+ struct aac_blockread_response *brr;
+ struct aac_blockwrite_response *bwr;
+ struct bio *bp;
+ AAC_FSAStatus status;
+
+ /* fetch relevant status and then release the command */
+ bp = (struct bio *)cm->cm_private;
+ if (BIO_IS_READ(bp)) {
+ brr = (struct aac_blockread_response *)&cm->cm_fib->data[0];
+ status = brr->Status;
+ } else {
+ bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0];
+ status = bwr->Status;
+ }
+ aac_release_command(cm);
+
+ /* fix up the bio based on status */
+ if (status == ST_OK) {
+ bp->bio_resid = 0;
+ } else {
+ bp->bio_error = EIO;
+ bp->bio_flags |= BIO_ERROR;
+ /* pass an error string out to the disk layer */
+ bp->bio_driver1 = aac_describe_code(aac_command_status_table,
+ status);
+ }
+ aac_biodone(bp);
+}
+
+/*
+ * Submit a command to the controller, return when it completes.
+ * XXX This is very dangerous! If the card has gone out to lunch, we could
+ * be stuck here forever. At the same time, signals are not caught
+ * because there is a risk that a signal could wakeup the tsleep before
+ * the card has a chance to complete the command. The passed in timeout
+ * is ignored for the same reason. Since there is no way to cancel a
+ * command in progress, we should probably create a 'dead' queue where
+ * commands go that have been interrupted/timed-out/etc, that keeps them
+ * out of the free pool. That way, if the card is just slow, it won't
+ * spam the memory of a command that has been recycled.
+ */
+static int
+aac_wait_command(struct aac_command *cm, int timeout)
+{
+ int s, error = 0;
+
+ debug_called(2);
+
+ /* Put the command on the ready queue and get things going */
+ cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE;
+ aac_enqueue_ready(cm);
+ aac_startio(cm->cm_sc);
+ s = splbio();
+ while (!(cm->cm_flags & AAC_CMD_COMPLETED) && (error != EWOULDBLOCK)) {
+ error = tsleep(cm, PRIBIO, "aacwait", 0);
+ }
+ splx(s);
+ return(error);
+}
+
+/*
+ *Command Buffer Management
+ */
+
+/*
+ * Allocate a command.
+ */
+int
+aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp)
+{
+ struct aac_command *cm;
+
+ debug_called(3);
+
+ if ((cm = aac_dequeue_free(sc)) == NULL)
+ return(ENOMEM);
+
+ *cmp = cm;
+ return(0);
+}
+
+/*
+ * Release a command back to the freelist.
+ */
+void
+aac_release_command(struct aac_command *cm)
+{
+ debug_called(3);
+
+ /* (re)initialise the command/FIB */
+ cm->cm_sgtable = NULL;
+ cm->cm_flags = 0;
+ cm->cm_complete = NULL;
+ cm->cm_private = NULL;
+ cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY;
+ cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB;
+ cm->cm_fib->Header.Flags = 0;
+ cm->cm_fib->Header.SenderSize = sizeof(struct aac_fib);
+
+ /*
+ * These are duplicated in aac_start to cover the case where an
+ * intermediate stage may have destroyed them. They're left
+ * initialised here for debugging purposes only.
+ */
+ cm->cm_fib->Header.SenderFibAddress = (u_int32_t)cm->cm_fib;
+ cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys;
+
+ aac_enqueue_free(cm);
+}
+
+/*
+ * Map helper for command/FIB allocation.
+ */
+static void
+aac_map_command_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
+{
+ struct aac_softc *sc;
+
+ sc = (struct aac_softc *)arg;
+
+ debug_called(3);
+
+ sc->aac_fibphys = segs[0].ds_addr;
+}
+
+/*
+ * Allocate and initialise commands/FIBs for this adapter.
+ */
+static int
+aac_alloc_commands(struct aac_softc *sc)
+{
+ struct aac_command *cm;
+ int i;
+
+ debug_called(1);
+
+ /* allocate the FIBs in DMAable memory and load them */
+ if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&sc->aac_fibs,
+ BUS_DMA_NOWAIT, &sc->aac_fibmap)) {
+ printf("Not enough contiguous memory available.\n");
+ return (ENOMEM);
+ }
+ bus_dmamap_load(sc->aac_fib_dmat, sc->aac_fibmap, sc->aac_fibs,
+ AAC_FIB_COUNT * sizeof(struct aac_fib),
+ aac_map_command_helper, sc, 0);
+
+ /* initialise constant fields in the command structure */
+ for (i = 0; i < AAC_FIB_COUNT; i++) {
+ cm = &sc->aac_command[i];
+ cm->cm_sc = sc;
+ cm->cm_fib = sc->aac_fibs + i;
+ cm->cm_fibphys = sc->aac_fibphys + (i * sizeof(struct aac_fib));
+
+ if (!bus_dmamap_create(sc->aac_buffer_dmat, 0, &cm->cm_datamap))
+ aac_release_command(cm);
+ }
+ return (0);
+}
+
+/*
+ * Free FIBs owned by this adapter.
+ */
+static void
+aac_free_commands(struct aac_softc *sc)
+{
+ int i;
+
+ debug_called(1);
+
+ for (i = 0; i < AAC_FIB_COUNT; i++)
+ bus_dmamap_destroy(sc->aac_buffer_dmat,
+ sc->aac_command[i].cm_datamap);
+
+ bus_dmamap_unload(sc->aac_fib_dmat, sc->aac_fibmap);
+ bus_dmamem_free(sc->aac_fib_dmat, sc->aac_fibs, sc->aac_fibmap);
+}
+
+/*
+ * Command-mapping helper function - populate this command's s/g table.
+ */
+static void
+aac_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error)
+{
+ struct aac_command *cm;
+ struct aac_fib *fib;
+ struct aac_sg_table *sg;
+ int i;
+
+ debug_called(3);
+
+ cm = (struct aac_command *)arg;
+ fib = cm->cm_fib;
+
+ /* find the s/g table */
+ sg = cm->cm_sgtable;
+
+ /* copy into the FIB */
+ if (sg != NULL) {
+ sg->SgCount = nseg;
+ for (i = 0; i < nseg; i++) {
+ sg->SgEntry[i].SgAddress = segs[i].ds_addr;
+ sg->SgEntry[i].SgByteCount = segs[i].ds_len;
+ }
+ /* update the FIB size for the s/g count */
+ fib->Header.Size += nseg * sizeof(struct aac_sg_entry);
+ }
+
+}
+
+/*
+ * Map a command into controller-visible space.
+ */
+static void
+aac_map_command(struct aac_command *cm)
+{
+ struct aac_softc *sc;
+
+ debug_called(2);
+
+ sc = cm->cm_sc;
+
+ /* don't map more than once */
+ if (cm->cm_flags & AAC_CMD_MAPPED)
+ return;
+
+ if (cm->cm_datalen != 0) {
+ bus_dmamap_load(sc->aac_buffer_dmat, cm->cm_datamap,
+ cm->cm_data, cm->cm_datalen,
+ aac_map_command_sg, cm, 0);
+
+ if (cm->cm_flags & AAC_CMD_DATAIN)
+ bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
+ BUS_DMASYNC_PREREAD);
+ if (cm->cm_flags & AAC_CMD_DATAOUT)
+ bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
+ BUS_DMASYNC_PREWRITE);
+ }
+ cm->cm_flags |= AAC_CMD_MAPPED;
+}
+
+/*
+ * Unmap a command from controller-visible space.
+ */
+static void
+aac_unmap_command(struct aac_command *cm)
+{
+ struct aac_softc *sc;
+
+ debug_called(2);
+
+ sc = cm->cm_sc;
+
+ if (!(cm->cm_flags & AAC_CMD_MAPPED))
+ return;
+
+ if (cm->cm_datalen != 0) {
+ if (cm->cm_flags & AAC_CMD_DATAIN)
+ bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
+ BUS_DMASYNC_POSTREAD);
+ if (cm->cm_flags & AAC_CMD_DATAOUT)
+ bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
+ BUS_DMASYNC_POSTWRITE);
+
+ bus_dmamap_unload(sc->aac_buffer_dmat, cm->cm_datamap);
+ }
+ cm->cm_flags &= ~AAC_CMD_MAPPED;
+}
+
+/*
+ * Hardware Interface
+ */
+
+/*
+ * Initialise the adapter.
+ */
+static void
+aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error)
+{
+ struct aac_softc *sc;
+
+ debug_called(1);
+
+ sc = (struct aac_softc *)arg;
+
+ sc->aac_common_busaddr = segs[0].ds_addr;
+}
+
+/*
+ * Retrieve the firmware version numbers. Dell PERC2/QC cards with
+ * firmware version 1.x are not compatible with this driver.
+ */
+static int
+aac_check_firmware(struct aac_softc *sc)
+{
+ u_int32_t major, minor;
+
+ debug_called(1);
+
+ if (sc->quirks & AAC_QUIRK_PERC2QC) {
+ if (aac_sync_command(sc, AAC_MONKER_GETKERNVER, 0, 0, 0, 0,
+ NULL)) {
+ device_printf(sc->aac_dev,
+ "Error reading firmware version\n");
+ return (EIO);
+ }
+
+ /* These numbers are stored as ASCII! */
+ major = (AAC_GETREG4(sc, AAC_SA_MAILBOX + 4) & 0xff) - 0x30;
+ minor = (AAC_GETREG4(sc, AAC_SA_MAILBOX + 8) & 0xff) - 0x30;
+ if (major == 1) {
+ device_printf(sc->aac_dev,
+ "Firmware version %d.%d is not supported.\n",
+ major, minor);
+ return (EINVAL);
+ }
+ }
+
+ return (0);
+}
+
+static int
+aac_init(struct aac_softc *sc)
+{
+ struct aac_adapter_init *ip;
+ time_t then;
+ u_int32_t code;
+ u_int8_t *qaddr;
+
+ debug_called(1);
+
+ /*
+ * First wait for the adapter to come ready.
+ */
+ then = time_second;
+ do {
+ code = AAC_GET_FWSTATUS(sc);
+ if (code & AAC_SELF_TEST_FAILED) {
+ device_printf(sc->aac_dev, "FATAL: selftest failed\n");
+ return(ENXIO);
+ }
+ if (code & AAC_KERNEL_PANIC) {
+ device_printf(sc->aac_dev,
+ "FATAL: controller kernel panic\n");
+ return(ENXIO);
+ }
+ if (time_second > (then + AAC_BOOT_TIMEOUT)) {
+ device_printf(sc->aac_dev,
+ "FATAL: controller not coming ready, "
+ "status %x\n", code);
+ return(ENXIO);
+ }
+ } while (!(code & AAC_UP_AND_RUNNING));
+
+ /*
+ * Create DMA tag for the common structure and allocate it.
+ */
+ if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */
+ 1, 0, /* algnmnt, boundary */
+ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
+ BUS_SPACE_MAXADDR, /* highaddr */
+ NULL, NULL, /* filter, filterarg */
+ sizeof(struct aac_common), /* maxsize */
+ 1, /* nsegments */
+ BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
+ 0, /* flags */
+ &sc->aac_common_dmat)) {
+ device_printf(sc->aac_dev,
+ "can't allocate common structure DMA tag\n");
+ return(ENOMEM);
+ }
+ if (bus_dmamem_alloc(sc->aac_common_dmat, (void **)&sc->aac_common,
+ BUS_DMA_NOWAIT, &sc->aac_common_dmamap)) {
+ device_printf(sc->aac_dev, "can't allocate common structure\n");
+ return(ENOMEM);
+ }
+ bus_dmamap_load(sc->aac_common_dmat, sc->aac_common_dmamap,
+ sc->aac_common, sizeof(*sc->aac_common), aac_common_map,
+ sc, 0);
+ bzero(sc->aac_common, sizeof(*sc->aac_common));
+
+ /*
+ * Fill in the init structure. This tells the adapter about the
+ * physical location of various important shared data structures.
+ */
+ ip = &sc->aac_common->ac_init;
+ ip->InitStructRevision = AAC_INIT_STRUCT_REVISION;
+
+ ip->AdapterFibsPhysicalAddress = sc->aac_common_busaddr +
+ offsetof(struct aac_common, ac_fibs);
+ ip->AdapterFibsVirtualAddress = &sc->aac_common->ac_fibs[0];
+ ip->AdapterFibsSize = AAC_ADAPTER_FIBS * sizeof(struct aac_fib);
+ ip->AdapterFibAlign = sizeof(struct aac_fib);
+
+ ip->PrintfBufferAddress = sc->aac_common_busaddr +
+ offsetof(struct aac_common, ac_printf);
+ ip->PrintfBufferSize = AAC_PRINTF_BUFSIZE;
+
+ ip->HostPhysMemPages = 0; /* not used? */
+ ip->HostElapsedSeconds = time_second; /* reset later if invalid */
+
+ /*
+ * Initialise FIB queues. Note that it appears that the layout of the
+ * indexes and the segmentation of the entries may be mandated by the
+ * adapter, which is only told about the base of the queue index fields.
+ *
+ * The initial values of the indices are assumed to inform the adapter
+ * of the sizes of the respective queues, and theoretically it could
+ * work out the entire layout of the queue structures from this. We
+ * take the easy route and just lay this area out like everyone else
+ * does.
+ *
+ * The Linux driver uses a much more complex scheme whereby several
+ * header records are kept for each queue. We use a couple of generic
+ * list manipulation functions which 'know' the size of each list by
+ * virtue of a table.
+ */
+ qaddr = &sc->aac_common->ac_qbuf[0] + AAC_QUEUE_ALIGN;
+ qaddr -= (u_int32_t)qaddr % AAC_QUEUE_ALIGN;
+ sc->aac_queues = (struct aac_queue_table *)qaddr;
+ ip->CommHeaderAddress = sc->aac_common_busaddr +
+ ((u_int32_t)sc->aac_queues -
+ (u_int32_t)sc->aac_common);
+ bzero(sc->aac_queues, sizeof(struct aac_queue_table));
+
+ sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] =
+ AAC_HOST_NORM_CMD_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] =
+ AAC_HOST_NORM_CMD_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] =
+ AAC_HOST_HIGH_CMD_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] =
+ AAC_HOST_HIGH_CMD_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] =
+ AAC_ADAP_NORM_CMD_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] =
+ AAC_ADAP_NORM_CMD_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] =
+ AAC_ADAP_HIGH_CMD_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] =
+ AAC_ADAP_HIGH_CMD_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]=
+ AAC_HOST_NORM_RESP_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]=
+ AAC_HOST_NORM_RESP_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]=
+ AAC_HOST_HIGH_RESP_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]=
+ AAC_HOST_HIGH_RESP_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]=
+ AAC_ADAP_NORM_RESP_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]=
+ AAC_ADAP_NORM_RESP_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]=
+ AAC_ADAP_HIGH_RESP_ENTRIES;
+ sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]=
+ AAC_ADAP_HIGH_RESP_ENTRIES;
+ sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] =
+ &sc->aac_queues->qt_HostNormCmdQueue[0];
+ sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] =
+ &sc->aac_queues->qt_HostHighCmdQueue[0];
+ sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] =
+ &sc->aac_queues->qt_AdapNormCmdQueue[0];
+ sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] =
+ &sc->aac_queues->qt_AdapHighCmdQueue[0];
+ sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] =
+ &sc->aac_queues->qt_HostNormRespQueue[0];
+ sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] =
+ &sc->aac_queues->qt_HostHighRespQueue[0];
+ sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] =
+ &sc->aac_queues->qt_AdapNormRespQueue[0];
+ sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] =
+ &sc->aac_queues->qt_AdapHighRespQueue[0];
+
+ /*
+ * Do controller-type-specific initialisation
+ */
+ switch (sc->aac_hwif) {
+ case AAC_HWIF_I960RX:
+ AAC_SETREG4(sc, AAC_RX_ODBR, ~0);
+ break;
+ }
+
+ /*
+ * Give the init structure to the controller.
+ */
+ if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT,
+ sc->aac_common_busaddr +
+ offsetof(struct aac_common, ac_init), 0, 0, 0,
+ NULL)) {
+ device_printf(sc->aac_dev,
+ "error establishing init structure\n");
+ return(EIO);
+ }
+
+ return(0);
+}
+
+/*
+ * Send a synchronous command to the controller and wait for a result.
+ */
+static int
+aac_sync_command(struct aac_softc *sc, u_int32_t command,
+ u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3,
+ u_int32_t *sp)
+{
+ time_t then;
+ u_int32_t status;
+
+ debug_called(3);
+
+ /* populate the mailbox */
+ AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3);
+
+ /* ensure the sync command doorbell flag is cleared */
+ AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND);
+
+ /* then set it to signal the adapter */
+ AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND);
+
+ /* spin waiting for the command to complete */
+ then = time_second;
+ do {
+ if (time_second > (then + AAC_IMMEDIATE_TIMEOUT)) {
+ debug(2, "timed out");
+ return(EIO);
+ }
+ } while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND));
+
+ /* clear the completion flag */
+ AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND);
+
+ /* get the command status */
+ status = AAC_GET_MAILBOXSTATUS(sc);
+ if (sp != NULL)
+ *sp = status;
+ return(0);
+}
+
+/*
+ * Grab the sync fib area.
+ */
+int
+aac_alloc_sync_fib(struct aac_softc *sc, struct aac_fib **fib, int flags)
+{
+
+ /*
+ * If the force flag is set, the system is shutting down, or in
+ * trouble. Ignore the mutex.
+ */
+ if (!(flags & AAC_SYNC_LOCK_FORCE))
+ AAC_LOCK_ACQUIRE(&sc->aac_sync_lock);
+
+ *fib = &sc->aac_common->ac_sync_fib;
+
+ return (1);
+}
+
+/*
+ * Release the sync fib area.
+ */
+void
+aac_release_sync_fib(struct aac_softc *sc)
+{
+
+ AAC_LOCK_RELEASE(&sc->aac_sync_lock);
+}
+
+/*
+ * Send a synchronous FIB to the controller and wait for a result.
+ */
+int
+aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate,
+ struct aac_fib *fib, u_int16_t datasize)
+{
+ debug_called(3);
+
+ if (datasize > AAC_FIB_DATASIZE)
+ return(EINVAL);
+
+ /*
+ * Set up the sync FIB
+ */
+ fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED |
+ AAC_FIBSTATE_INITIALISED |
+ AAC_FIBSTATE_EMPTY;
+ fib->Header.XferState |= xferstate;
+ fib->Header.Command = command;
+ fib->Header.StructType = AAC_FIBTYPE_TFIB;
+ fib->Header.Size = sizeof(struct aac_fib) + datasize;
+ fib->Header.SenderSize = sizeof(struct aac_fib);
+ fib->Header.SenderFibAddress = (u_int32_t)fib;
+ fib->Header.ReceiverFibAddress = sc->aac_common_busaddr +
+ offsetof(struct aac_common,
+ ac_sync_fib);
+
+ /*
+ * Give the FIB to the controller, wait for a response.
+ */
+ if (aac_sync_command(sc, AAC_MONKER_SYNCFIB,
+ fib->Header.ReceiverFibAddress, 0, 0, 0, NULL)) {
+ debug(2, "IO error");
+ return(EIO);
+ }
+
+ return (0);
+}
+
+/*
+ * Adapter-space FIB queue manipulation
+ *
+ * Note that the queue implementation here is a little funky; neither the PI or
+ * CI will ever be zero. This behaviour is a controller feature.
+ */
+static struct {
+ int size;
+ int notify;
+} aac_qinfo[] = {
+ {AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL},
+ {AAC_HOST_HIGH_CMD_ENTRIES, 0},
+ {AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY},
+ {AAC_ADAP_HIGH_CMD_ENTRIES, 0},
+ {AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL},
+ {AAC_HOST_HIGH_RESP_ENTRIES, 0},
+ {AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY},
+ {AAC_ADAP_HIGH_RESP_ENTRIES, 0}
+};
+
+/*
+ * Atomically insert an entry into the nominated queue, returns 0 on success or
+ * EBUSY if the queue is full.
+ *
+ * Note: it would be more efficient to defer notifying the controller in
+ * the case where we may be inserting several entries in rapid succession,
+ * but implementing this usefully may be difficult (it would involve a
+ * separate queue/notify interface).
+ */
+static int
+aac_enqueue_fib(struct aac_softc *sc, int queue, struct aac_command *cm)
+{
+ u_int32_t pi, ci;
+ int s, error;
+ u_int32_t fib_size;
+ u_int32_t fib_addr;
+
+ debug_called(3);
+
+ fib_size = cm->cm_fib->Header.Size;
+ fib_addr = cm->cm_fib->Header.ReceiverFibAddress;
+
+ s = splbio();
+
+ /* get the producer/consumer indices */
+ pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX];
+ ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX];
+
+ /* wrap the queue? */
+ if (pi >= aac_qinfo[queue].size)
+ pi = 0;
+
+ /* check for queue full */
+ if ((pi + 1) == ci) {
+ error = EBUSY;
+ goto out;
+ }
+
+ /* populate queue entry */
+ (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size;
+ (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr;
+
+ /* update producer index */
+ sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1;
+
+ /*
+ * To avoid a race with its completion interrupt, place this command on
+ * the busy queue prior to advertising it to the controller.
+ */
+ aac_enqueue_busy(cm);
+
+ /* notify the adapter if we know how */
+ if (aac_qinfo[queue].notify != 0)
+ AAC_QNOTIFY(sc, aac_qinfo[queue].notify);
+
+ error = 0;
+
+out:
+ splx(s);
+ return(error);
+}
+
+/*
+ * Atomically remove one entry from the nominated queue, returns 0 on
+ * success or ENOENT if the queue is empty.
+ */
+static int
+aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size,
+ struct aac_fib **fib_addr)
+{
+ u_int32_t pi, ci;
+ int s, error;
+ int notify;
+
+ debug_called(3);
+
+ s = splbio();
+
+ /* get the producer/consumer indices */
+ pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX];
+ ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX];
+
+ /* check for queue empty */
+ if (ci == pi) {
+ error = ENOENT;
+ goto out;
+ }
+
+ notify = 0;
+ if (ci == pi + 1)
+ notify++;
+
+ /* wrap the queue? */
+ if (ci >= aac_qinfo[queue].size)
+ ci = 0;
+
+ /* fetch the entry */
+ *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size;
+ *fib_addr = (struct aac_fib *)(sc->aac_qentries[queue] +
+ ci)->aq_fib_addr;
+
+ /* update consumer index */
+ sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1;
+
+ /* if we have made the queue un-full, notify the adapter */
+ if (notify && (aac_qinfo[queue].notify != 0))
+ AAC_QNOTIFY(sc, aac_qinfo[queue].notify);
+ error = 0;
+
+out:
+ splx(s);
+ return(error);
+}
+
+/*
+ * Put our response to an Adapter Initialed Fib on the response queue
+ */
+static int
+aac_enqueue_response(struct aac_softc *sc, int queue, struct aac_fib *fib)
+{
+ u_int32_t pi, ci;
+ int s, error;
+ u_int32_t fib_size;
+ u_int32_t fib_addr;
+
+ debug_called(1);
+
+ /* Tell the adapter where the FIB is */
+ fib_size = fib->Header.Size;
+ fib_addr = fib->Header.SenderFibAddress;
+ fib->Header.ReceiverFibAddress = fib_addr;
+
+ s = splbio();
+
+ /* get the producer/consumer indices */
+ pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX];
+ ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX];
+
+ /* wrap the queue? */
+ if (pi >= aac_qinfo[queue].size)
+ pi = 0;
+
+ /* check for queue full */
+ if ((pi + 1) == ci) {
+ error = EBUSY;
+ goto out;
+ }
+
+ /* populate queue entry */
+ (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size;
+ (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr;
+
+ /* update producer index */
+ sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1;
+
+ /* notify the adapter if we know how */
+ if (aac_qinfo[queue].notify != 0)
+ AAC_QNOTIFY(sc, aac_qinfo[queue].notify);
+
+ error = 0;
+
+out:
+ splx(s);
+ return(error);
+}
+
+/*
+ * Check for commands that have been outstanding for a suspiciously long time,
+ * and complain about them.
+ */
+static void
+aac_timeout(struct aac_softc *sc)
+{
+ int s;
+ struct aac_command *cm;
+ time_t deadline;
+
+#if 0
+ /* simulate an interrupt to handle possibly-missed interrupts */
+ /*
+ * XXX This was done to work around another bug which has since been
+ * fixed. It is dangerous anyways because you don't want multiple
+ * threads in the interrupt handler at the same time! If calling
+ * is deamed neccesary in the future, proper mutexes must be used.
+ */
+ s = splbio();
+ aac_intr(sc);
+ splx(s);
+
+ /* kick the I/O queue to restart it in the case of deadlock */
+ aac_startio(sc);
+#endif
+
+ /*
+ * traverse the busy command list, bitch about late commands once
+ * only.
+ */
+ deadline = time_second - AAC_CMD_TIMEOUT;
+ s = splbio();
+ TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) {
+ if ((cm->cm_timestamp < deadline)
+ /* && !(cm->cm_flags & AAC_CMD_TIMEDOUT) */) {
+ cm->cm_flags |= AAC_CMD_TIMEDOUT;
+ device_printf(sc->aac_dev,
+ "COMMAND %p TIMEOUT AFTER %d SECONDS\n",
+ cm, (int)(time_second-cm->cm_timestamp));
+ AAC_PRINT_FIB(sc, cm->cm_fib);
+ }
+ }
+ splx(s);
+
+ /* reset the timer for next time */
+ timeout((timeout_t*)aac_timeout, sc, AAC_PERIODIC_INTERVAL * hz);
+ return;
+}
+
+/*
+ * Interface Function Vectors
+ */
+
+/*
+ * Read the current firmware status word.
+ */
+static int
+aac_sa_get_fwstatus(struct aac_softc *sc)
+{
+ debug_called(3);
+
+ return(AAC_GETREG4(sc, AAC_SA_FWSTATUS));
+}
+
+static int
+aac_rx_get_fwstatus(struct aac_softc *sc)
+{
+ debug_called(3);
+
+ return(AAC_GETREG4(sc, AAC_RX_FWSTATUS));
+}
+
+static int
+aac_fa_get_fwstatus(struct aac_softc *sc)
+{
+ int val;
+
+ debug_called(3);
+
+ val = AAC_GETREG4(sc, AAC_FA_FWSTATUS);
+ return (val);
+}
+
+/*
+ * Notify the controller of a change in a given queue
+ */
+
+static void
+aac_sa_qnotify(struct aac_softc *sc, int qbit)
+{
+ debug_called(3);
+
+ AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit);
+}
+
+static void
+aac_rx_qnotify(struct aac_softc *sc, int qbit)
+{
+ debug_called(3);
+
+ AAC_SETREG4(sc, AAC_RX_IDBR, qbit);
+}
+
+static void
+aac_fa_qnotify(struct aac_softc *sc, int qbit)
+{
+ debug_called(3);
+
+ AAC_SETREG2(sc, AAC_FA_DOORBELL1, qbit);
+ AAC_FA_HACK(sc);
+}
+
+/*
+ * Get the interrupt reason bits
+ */
+static int
+aac_sa_get_istatus(struct aac_softc *sc)
+{
+ debug_called(3);
+
+ return(AAC_GETREG2(sc, AAC_SA_DOORBELL0));
+}
+
+static int
+aac_rx_get_istatus(struct aac_softc *sc)
+{
+ debug_called(3);
+
+ return(AAC_GETREG4(sc, AAC_RX_ODBR));
+}
+
+static int
+aac_fa_get_istatus(struct aac_softc *sc)
+{
+ int val;
+
+ debug_called(3);
+
+ val = AAC_GETREG2(sc, AAC_FA_DOORBELL0);
+ return (val);
+}
+
+/*
+ * Clear some interrupt reason bits
+ */
+static void
+aac_sa_clear_istatus(struct aac_softc *sc, int mask)
+{
+ debug_called(3);
+
+ AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask);
+}
+
+static void
+aac_rx_clear_istatus(struct aac_softc *sc, int mask)
+{
+ debug_called(3);
+
+ AAC_SETREG4(sc, AAC_RX_ODBR, mask);
+}
+
+static void
+aac_fa_clear_istatus(struct aac_softc *sc, int mask)
+{
+ debug_called(3);
+
+ AAC_SETREG2(sc, AAC_FA_DOORBELL0_CLEAR, mask);
+ AAC_FA_HACK(sc);
+}
+
+/*
+ * Populate the mailbox and set the command word
+ */
+static void
+aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command,
+ u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
+{
+ debug_called(4);
+
+ AAC_SETREG4(sc, AAC_SA_MAILBOX, command);
+ AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0);
+ AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1);
+ AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2);
+ AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3);
+}
+
+static void
+aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command,
+ u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
+{
+ debug_called(4);
+
+ AAC_SETREG4(sc, AAC_RX_MAILBOX, command);
+ AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0);
+ AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1);
+ AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2);
+ AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3);
+}
+
+static void
+aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command,
+ u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
+{
+ debug_called(4);
+
+ AAC_SETREG4(sc, AAC_FA_MAILBOX, command);
+ AAC_FA_HACK(sc);
+ AAC_SETREG4(sc, AAC_FA_MAILBOX + 4, arg0);
+ AAC_FA_HACK(sc);
+ AAC_SETREG4(sc, AAC_FA_MAILBOX + 8, arg1);
+ AAC_FA_HACK(sc);
+ AAC_SETREG4(sc, AAC_FA_MAILBOX + 12, arg2);
+ AAC_FA_HACK(sc);
+ AAC_SETREG4(sc, AAC_FA_MAILBOX + 16, arg3);
+ AAC_FA_HACK(sc);
+}
+
+/*
+ * Fetch the immediate command status word
+ */
+static int
+aac_sa_get_mailboxstatus(struct aac_softc *sc)
+{
+ debug_called(4);
+
+ return(AAC_GETREG4(sc, AAC_SA_MAILBOX));
+}
+
+static int
+aac_rx_get_mailboxstatus(struct aac_softc *sc)
+{
+ debug_called(4);
+
+ return(AAC_GETREG4(sc, AAC_RX_MAILBOX));
+}
+
+static int
+aac_fa_get_mailboxstatus(struct aac_softc *sc)
+{
+ int val;
+
+ debug_called(4);
+
+ val = AAC_GETREG4(sc, AAC_FA_MAILBOX);
+ return (val);
+}
+
+/*
+ * Set/clear interrupt masks
+ */
+static void
+aac_sa_set_interrupts(struct aac_softc *sc, int enable)
+{
+ debug(2, "%sable interrupts", enable ? "en" : "dis");
+
+ if (enable) {
+ AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS);
+ } else {
+ AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0);
+ }
+}
+
+static void
+aac_rx_set_interrupts(struct aac_softc *sc, int enable)
+{
+ debug(2, "%sable interrupts", enable ? "en" : "dis");
+
+ if (enable) {
+ AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS);
+ } else {
+ AAC_SETREG4(sc, AAC_RX_OIMR, ~0);
+ }
+}
+
+static void
+aac_fa_set_interrupts(struct aac_softc *sc, int enable)
+{
+ debug(2, "%sable interrupts", enable ? "en" : "dis");
+
+ if (enable) {
+ AAC_SETREG2((sc), AAC_FA_MASK0_CLEAR, AAC_DB_INTERRUPTS);
+ AAC_FA_HACK(sc);
+ } else {
+ AAC_SETREG2((sc), AAC_FA_MASK0, ~0);
+ AAC_FA_HACK(sc);
+ }
+}
+
+/*
+ * Debugging and Diagnostics
+ */
+
+/*
+ * Print some information about the controller.
+ */
+static void
+aac_describe_controller(struct aac_softc *sc)
+{
+ struct aac_fib *fib;
+ struct aac_adapter_info *info;
+
+ debug_called(2);
+
+ aac_alloc_sync_fib(sc, &fib, 0);
+
+ fib->data[0] = 0;
+ if (aac_sync_fib(sc, RequestAdapterInfo, 0, fib, 1)) {
+ device_printf(sc->aac_dev, "RequestAdapterInfo failed\n");
+ aac_release_sync_fib(sc);
+ return;
+ }
+ info = (struct aac_adapter_info *)&fib->data[0];
+
+ device_printf(sc->aac_dev, "%s %dMHz, %dMB cache memory, %s\n",
+ aac_describe_code(aac_cpu_variant, info->CpuVariant),
+ info->ClockSpeed, info->BufferMem / (1024 * 1024),
+ aac_describe_code(aac_battery_platform,
+ info->batteryPlatform));
+
+ /* save the kernel revision structure for later use */
+ sc->aac_revision = info->KernelRevision;
+ device_printf(sc->aac_dev, "Kernel %d.%d-%d, Build %d, S/N %6X\n",
+ info->KernelRevision.external.comp.major,
+ info->KernelRevision.external.comp.minor,
+ info->KernelRevision.external.comp.dash,
+ info->KernelRevision.buildNumber,
+ (u_int32_t)(info->SerialNumber & 0xffffff));
+
+ aac_release_sync_fib(sc);
+}
+
+/*
+ * Look up a text description of a numeric error code and return a pointer to
+ * same.
+ */
+static char *
+aac_describe_code(struct aac_code_lookup *table, u_int32_t code)
+{
+ int i;
+
+ for (i = 0; table[i].string != NULL; i++)
+ if (table[i].code == code)
+ return(table[i].string);
+ return(table[i + 1].string);
+}
+
+/*
+ * Management Interface
+ */
+
+static int
+aac_open(dev_t dev, int flags, int fmt, d_thread_t *td)
+{
+ struct aac_softc *sc;
+
+ debug_called(2);
+
+ sc = dev->si_drv1;
+
+ /* Check to make sure the device isn't already open */
+ if (sc->aac_state & AAC_STATE_OPEN) {
+ return EBUSY;
+ }
+ sc->aac_state |= AAC_STATE_OPEN;
+
+ return 0;
+}
+
+static int
+aac_close(dev_t dev, int flags, int fmt, d_thread_t *td)
+{
+ struct aac_softc *sc;
+
+ debug_called(2);
+
+ sc = dev->si_drv1;
+
+ /* Mark this unit as no longer open */
+ sc->aac_state &= ~AAC_STATE_OPEN;
+
+ return 0;
+}
+
+static int
+aac_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, d_thread_t *td)
+{
+ union aac_statrequest *as;
+ struct aac_softc *sc;
+ int error = 0;
+ int i;
+
+ debug_called(2);
+
+ as = (union aac_statrequest *)arg;
+ sc = dev->si_drv1;
+
+ switch (cmd) {
+ case AACIO_STATS:
+ switch (as->as_item) {
+ case AACQ_FREE:
+ case AACQ_BIO:
+ case AACQ_READY:
+ case AACQ_BUSY:
+ case AACQ_COMPLETE:
+ bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat,
+ sizeof(struct aac_qstat));
+ break;
+ default:
+ error = ENOENT;
+ break;
+ }
+ break;
+
+ case FSACTL_SENDFIB:
+ arg = *(caddr_t*)arg;
+ case FSACTL_LNX_SENDFIB:
+ debug(1, "FSACTL_SENDFIB");
+ error = aac_ioctl_sendfib(sc, arg);
+ break;
+ case FSACTL_AIF_THREAD:
+ case FSACTL_LNX_AIF_THREAD:
+ debug(1, "FSACTL_AIF_THREAD");
+ error = EINVAL;
+ break;
+ case FSACTL_OPEN_GET_ADAPTER_FIB:
+ arg = *(caddr_t*)arg;
+ case FSACTL_LNX_OPEN_GET_ADAPTER_FIB:
+ debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB");
+ /*
+ * Pass the caller out an AdapterFibContext.
+ *
+ * Note that because we only support one opener, we
+ * basically ignore this. Set the caller's context to a magic
+ * number just in case.
+ *
+ * The Linux code hands the driver a pointer into kernel space,
+ * and then trusts it when the caller hands it back. Aiee!
+ * Here, we give it the proc pointer of the per-adapter aif
+ * thread. It's only used as a sanity check in other calls.
+ */
+ i = (int)sc->aifthread;
+ error = copyout(&i, arg, sizeof(i));
+ break;
+ case FSACTL_GET_NEXT_ADAPTER_FIB:
+ arg = *(caddr_t*)arg;
+ case FSACTL_LNX_GET_NEXT_ADAPTER_FIB:
+ debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB");
+ error = aac_getnext_aif(sc, arg);
+ break;
+ case FSACTL_CLOSE_GET_ADAPTER_FIB:
+ case FSACTL_LNX_CLOSE_GET_ADAPTER_FIB:
+ debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB");
+ /* don't do anything here */
+ break;
+ case FSACTL_MINIPORT_REV_CHECK:
+ arg = *(caddr_t*)arg;
+ case FSACTL_LNX_MINIPORT_REV_CHECK:
+ debug(1, "FSACTL_MINIPORT_REV_CHECK");
+ error = aac_rev_check(sc, arg);
+ break;
+ case FSACTL_QUERY_DISK:
+ arg = *(caddr_t*)arg;
+ case FSACTL_LNX_QUERY_DISK:
+ debug(1, "FSACTL_QUERY_DISK");
+ error = aac_query_disk(sc, arg);
+ break;
+ case FSACTL_DELETE_DISK:
+ case FSACTL_LNX_DELETE_DISK:
+ /*
+ * We don't trust the underland to tell us when to delete a
+ * container, rather we rely on an AIF coming from the
+ * controller
+ */
+ error = 0;
+ break;
+ default:
+ debug(1, "unsupported cmd 0x%lx\n", cmd);
+ error = EINVAL;
+ break;
+ }
+ return(error);
+}
+
+static int
+aac_poll(dev_t dev, int poll_events, d_thread_t *td)
+{
+ struct aac_softc *sc;
+ int revents;
+
+ sc = dev->si_drv1;
+ revents = 0;
+
+ AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock);
+ if ((poll_events & (POLLRDNORM | POLLIN)) != 0) {
+ if (sc->aac_aifq_tail != sc->aac_aifq_head)
+ revents |= poll_events & (POLLIN | POLLRDNORM);
+ }
+ AAC_LOCK_RELEASE(&sc->aac_aifq_lock);
+
+ if (revents == 0) {
+ if (poll_events & (POLLIN | POLLRDNORM))
+ selrecord(td, &sc->rcv_select);
+ }
+
+ return (revents);
+}
+
+/*
+ * Send a FIB supplied from userspace
+ */
+static int
+aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib)
+{
+ struct aac_command *cm;
+ int size, error;
+
+ debug_called(2);
+
+ cm = NULL;
+
+ /*
+ * Get a command
+ */
+ if (aac_alloc_command(sc, &cm)) {
+ error = EBUSY;
+ goto out;
+ }
+
+ /*
+ * Fetch the FIB header, then re-copy to get data as well.
+ */
+ if ((error = copyin(ufib, cm->cm_fib,
+ sizeof(struct aac_fib_header))) != 0)
+ goto out;
+ size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header);
+ if (size > sizeof(struct aac_fib)) {
+ device_printf(sc->aac_dev, "incoming FIB oversized (%d > %d)\n",
+ size, sizeof(struct aac_fib));
+ size = sizeof(struct aac_fib);
+ }
+ if ((error = copyin(ufib, cm->cm_fib, size)) != 0)
+ goto out;
+ cm->cm_fib->Header.Size = size;
+ cm->cm_timestamp = time_second;
+
+ /*
+ * Pass the FIB to the controller, wait for it to complete.
+ */
+ if ((error = aac_wait_command(cm, 30)) != 0) { /* XXX user timeout? */
+ printf("aac_wait_command return %d\n", error);
+ goto out;
+ }
+
+ /*
+ * Copy the FIB and data back out to the caller.
+ */
+ size = cm->cm_fib->Header.Size;
+ if (size > sizeof(struct aac_fib)) {
+ device_printf(sc->aac_dev, "outbound FIB oversized (%d > %d)\n",
+ size, sizeof(struct aac_fib));
+ size = sizeof(struct aac_fib);
+ }
+ error = copyout(cm->cm_fib, ufib, size);
+
+out:
+ if (cm != NULL) {
+ aac_release_command(cm);
+ }
+ return(error);
+}
+
+/*
+ * Handle an AIF sent to us by the controller; queue it for later reference.
+ * If the queue fills up, then drop the older entries.
+ */
+static void
+aac_handle_aif(struct aac_softc *sc, struct aac_fib *fib)
+{
+ struct aac_aif_command *aif;
+ struct aac_container *co, *co_next;
+ struct aac_mntinfo *mi;
+ struct aac_mntinforesp *mir = NULL;
+ u_int16_t rsize;
+ int next, found;
+ int added = 0, i = 0;
+
+ debug_called(2);
+
+ aif = (struct aac_aif_command*)&fib->data[0];
+ aac_print_aif(sc, aif);
+
+ /* Is it an event that we should care about? */
+ switch (aif->command) {
+ case AifCmdEventNotify:
+ switch (aif->data.EN.type) {
+ case AifEnAddContainer:
+ case AifEnDeleteContainer:
+ /*
+ * A container was added or deleted, but the message
+ * doesn't tell us anything else! Re-enumerate the
+ * containers and sort things out.
+ */
+ aac_alloc_sync_fib(sc, &fib, 0);
+ mi = (struct aac_mntinfo *)&fib->data[0];
+ do {
+ /*
+ * Ask the controller for its containers one at
+ * a time.
+ * XXX What if the controller's list changes
+ * midway through this enumaration?
+ * XXX This should be done async.
+ */
+ bzero(mi, sizeof(struct aac_mntinfo));
+ mi->Command = VM_NameServe;
+ mi->MntType = FT_FILESYS;
+ mi->MntCount = i;
+ rsize = sizeof(mir);
+ if (aac_sync_fib(sc, ContainerCommand, 0, fib,
+ sizeof(struct aac_mntinfo))) {
+ debug(2, "Error probing container %d\n",
+ i);
+ continue;
+ }
+ mir = (struct aac_mntinforesp *)&fib->data[0];
+ /*
+ * Check the container against our list.
+ * co->co_found was already set to 0 in a
+ * previous run.
+ */
+ if ((mir->Status == ST_OK) &&
+ (mir->MntTable[0].VolType != CT_NONE)) {
+ found = 0;
+ TAILQ_FOREACH(co,
+ &sc->aac_container_tqh,
+ co_link) {
+ if (co->co_mntobj.ObjectId ==
+ mir->MntTable[0].ObjectId) {
+ co->co_found = 1;
+ found = 1;
+ break;
+ }
+ }
+ /*
+ * If the container matched, continue
+ * in the list.
+ */
+ if (found) {
+ i++;
+ continue;
+ }
+
+ /*
+ * This is a new container. Do all the
+ * appropriate things to set it up. */
+ aac_add_container(sc, mir, 1);
+ added = 1;
+ }
+ i++;
+ } while ((i < mir->MntRespCount) &&
+ (i < AAC_MAX_CONTAINERS));
+ aac_release_sync_fib(sc);
+
+ /*
+ * Go through our list of containers and see which ones
+ * were not marked 'found'. Since the controller didn't
+ * list them they must have been deleted. Do the
+ * appropriate steps to destroy the device. Also reset
+ * the co->co_found field.
+ */
+ co = TAILQ_FIRST(&sc->aac_container_tqh);
+ while (co != NULL) {
+ if (co->co_found == 0) {
+ device_delete_child(sc->aac_dev,
+ co->co_disk);
+ co_next = TAILQ_NEXT(co, co_link);
+ AAC_LOCK_ACQUIRE(&sc->
+ aac_container_lock);
+ TAILQ_REMOVE(&sc->aac_container_tqh, co,
+ co_link);
+ AAC_LOCK_RELEASE(&sc->
+ aac_container_lock);
+ FREE(co, M_AACBUF);
+ co = co_next;
+ } else {
+ co->co_found = 0;
+ co = TAILQ_NEXT(co, co_link);
+ }
+ }
+
+ /* Attach the newly created containers */
+ if (added)
+ bus_generic_attach(sc->aac_dev);
+
+ break;
+
+ default:
+ break;
+ }
+
+ default:
+ break;
+ }
+
+ /* Copy the AIF data to the AIF queue for ioctl retrieval */
+ AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock);
+ next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH;
+ if (next != sc->aac_aifq_tail) {
+ bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command));
+ sc->aac_aifq_head = next;
+
+ /* On the off chance that someone is sleeping for an aif... */
+ if (sc->aac_state & AAC_STATE_AIF_SLEEPER)
+ wakeup(sc->aac_aifq);
+ /* Wakeup any poll()ers */
+ selwakeup(&sc->rcv_select);
+ }
+ AAC_LOCK_RELEASE(&sc->aac_aifq_lock);
+
+ return;
+}
+
+/*
+ * Return the Revision of the driver to userspace and check to see if the
+ * userspace app is possibly compatible. This is extremely bogus since
+ * our driver doesn't follow Adaptec's versioning system. Cheat by just
+ * returning what the card reported.
+ */
+static int
+aac_rev_check(struct aac_softc *sc, caddr_t udata)
+{
+ struct aac_rev_check rev_check;
+ struct aac_rev_check_resp rev_check_resp;
+ int error = 0;
+
+ debug_called(2);
+
+ /*
+ * Copyin the revision struct from userspace
+ */
+ if ((error = copyin(udata, (caddr_t)&rev_check,
+ sizeof(struct aac_rev_check))) != 0) {
+ return error;
+ }
+
+ debug(2, "Userland revision= %d\n",
+ rev_check.callingRevision.buildNumber);
+
+ /*
+ * Doctor up the response struct.
+ */
+ rev_check_resp.possiblyCompatible = 1;
+ rev_check_resp.adapterSWRevision.external.ul =
+ sc->aac_revision.external.ul;
+ rev_check_resp.adapterSWRevision.buildNumber =
+ sc->aac_revision.buildNumber;
+
+ return(copyout((caddr_t)&rev_check_resp, udata,
+ sizeof(struct aac_rev_check_resp)));
+}
+
+/*
+ * Pass the caller the next AIF in their queue
+ */
+static int
+aac_getnext_aif(struct aac_softc *sc, caddr_t arg)
+{
+ struct get_adapter_fib_ioctl agf;
+ int error, s;
+
+ debug_called(2);
+
+ if ((error = copyin(arg, &agf, sizeof(agf))) == 0) {
+
+ /*
+ * Check the magic number that we gave the caller.
+ */
+ if (agf.AdapterFibContext != (int)sc->aifthread) {
+ error = EFAULT;
+ } else {
+
+ s = splbio();
+ error = aac_return_aif(sc, agf.AifFib);
+
+ if ((error == EAGAIN) && (agf.Wait)) {
+ sc->aac_state |= AAC_STATE_AIF_SLEEPER;
+ while (error == EAGAIN) {
+ error = tsleep(sc->aac_aifq, PRIBIO |
+ PCATCH, "aacaif", 0);
+ if (error == 0)
+ error = aac_return_aif(sc,
+ agf.AifFib);
+ }
+ sc->aac_state &= ~AAC_STATE_AIF_SLEEPER;
+ }
+ splx(s);
+ }
+ }
+ return(error);
+}
+
+/*
+ * Hand the next AIF off the top of the queue out to userspace.
+ */
+static int
+aac_return_aif(struct aac_softc *sc, caddr_t uptr)
+{
+ int error;
+
+ debug_called(2);
+
+ AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock);
+ if (sc->aac_aifq_tail == sc->aac_aifq_head) {
+ error = EAGAIN;
+ } else {
+ error = copyout(&sc->aac_aifq[sc->aac_aifq_tail], uptr,
+ sizeof(struct aac_aif_command));
+ if (error)
+ printf("aac_return_aif: copyout returned %d\n", error);
+ if (!error)
+ sc->aac_aifq_tail = (sc->aac_aifq_tail + 1) %
+ AAC_AIFQ_LENGTH;
+ }
+ AAC_LOCK_RELEASE(&sc->aac_aifq_lock);
+ return(error);
+}
+
+/*
+ * Give the userland some information about the container. The AAC arch
+ * expects the driver to be a SCSI passthrough type driver, so it expects
+ * the containers to have b:t:l numbers. Fake it.
+ */
+static int
+aac_query_disk(struct aac_softc *sc, caddr_t uptr)
+{
+ struct aac_query_disk query_disk;
+ struct aac_container *co;
+ struct aac_disk *disk;
+ int error, id;
+
+ debug_called(2);
+
+ disk = NULL;
+
+ error = copyin(uptr, (caddr_t)&query_disk,
+ sizeof(struct aac_query_disk));
+ if (error)
+ return (error);
+
+ id = query_disk.ContainerNumber;
+ if (id == -1)
+ return (EINVAL);
+
+ AAC_LOCK_ACQUIRE(&sc->aac_container_lock);
+ TAILQ_FOREACH(co, &sc->aac_container_tqh, co_link) {
+ if (co->co_mntobj.ObjectId == id)
+ break;
+ }
+
+ if (co == NULL) {
+ query_disk.Valid = 0;
+ query_disk.Locked = 0;
+ query_disk.Deleted = 1; /* XXX is this right? */
+ } else {
+ disk = device_get_softc(co->co_disk);
+ query_disk.Valid = 1;
+ query_disk.Locked =
+ (disk->ad_flags & AAC_DISK_OPEN) ? 1 : 0;
+ query_disk.Deleted = 0;
+ query_disk.Bus = device_get_unit(sc->aac_dev);
+ query_disk.Target = disk->unit;
+ query_disk.Lun = 0;
+ query_disk.UnMapped = 0;
+ bcopy(disk->ad_dev_t->si_name,
+ &query_disk.diskDeviceName[0], 10);
+ }
+ AAC_LOCK_RELEASE(&sc->aac_container_lock);
+
+ error = copyout((caddr_t)&query_disk, uptr,
+ sizeof(struct aac_query_disk));
+
+ return (error);
+}
+
+static void
+aac_get_bus_info(struct aac_softc *sc)
+{
+ struct aac_fib *fib;
+ struct aac_ctcfg *c_cmd;
+ struct aac_ctcfg_resp *c_resp;
+ struct aac_vmioctl *vmi;
+ struct aac_vmi_businf_resp *vmi_resp;
+ struct aac_getbusinf businfo;
+ struct aac_cam_inf *caminf;
+ device_t child;
+ int i, found, error;
+
+ aac_alloc_sync_fib(sc, &fib, 0);
+ c_cmd = (struct aac_ctcfg *)&fib->data[0];
+ bzero(c_cmd, sizeof(struct aac_ctcfg));
+
+ c_cmd->Command = VM_ContainerConfig;
+ c_cmd->cmd = CT_GET_SCSI_METHOD;
+ c_cmd->param = 0;
+
+ error = aac_sync_fib(sc, ContainerCommand, 0, fib,
+ sizeof(struct aac_ctcfg));
+ if (error) {
+ device_printf(sc->aac_dev, "Error %d sending "
+ "VM_ContainerConfig command\n", error);
+ aac_release_sync_fib(sc);
+ return;
+ }
+
+ c_resp = (struct aac_ctcfg_resp *)&fib->data[0];
+ if (c_resp->Status != ST_OK) {
+ device_printf(sc->aac_dev, "VM_ContainerConfig returned 0x%x\n",
+ c_resp->Status);
+ aac_release_sync_fib(sc);
+ return;
+ }
+
+ sc->scsi_method_id = c_resp->param;
+
+ vmi = (struct aac_vmioctl *)&fib->data[0];
+ bzero(vmi, sizeof(struct aac_vmioctl));
+
+ vmi->Command = VM_Ioctl;
+ vmi->ObjType = FT_DRIVE;
+ vmi->MethId = sc->scsi_method_id;
+ vmi->ObjId = 0;
+ vmi->IoctlCmd = GetBusInfo;
+
+ error = aac_sync_fib(sc, ContainerCommand, 0, fib,
+ sizeof(struct aac_vmioctl));
+ if (error) {
+ device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n",
+ error);
+ aac_release_sync_fib(sc);
+ return;
+ }
+
+ vmi_resp = (struct aac_vmi_businf_resp *)&fib->data[0];
+ if (vmi_resp->Status != ST_OK) {
+ device_printf(sc->aac_dev, "VM_Ioctl returned %d\n",
+ vmi_resp->Status);
+ aac_release_sync_fib(sc);
+ return;
+ }
+
+ bcopy(&vmi_resp->BusInf, &businfo, sizeof(struct aac_getbusinf));
+ aac_release_sync_fib(sc);
+
+ found = 0;
+ for (i = 0; i < businfo.BusCount; i++) {
+ if (businfo.BusValid[i] != AAC_BUS_VALID)
+ continue;
+
+ MALLOC(caminf, struct aac_cam_inf *,
+ sizeof(struct aac_cam_inf), M_AACBUF, M_NOWAIT | M_ZERO);
+ if (caminf == NULL)
+ continue;
+
+ child = device_add_child(sc->aac_dev, "aacp", -1);
+ if (child == NULL) {
+ device_printf(sc->aac_dev, "device_add_child failed\n");
+ continue;
+ }
+
+ caminf->TargetsPerBus = businfo.TargetsPerBus;
+ caminf->BusNumber = i;
+ caminf->InitiatorBusId = businfo.InitiatorBusId[i];
+ caminf->aac_sc = sc;
+
+ device_set_ivars(child, caminf);
+ device_set_desc(child, "SCSI Passthrough Bus");
+
+ found = 1;
+ }
+
+ if (found)
+ bus_generic_attach(sc->aac_dev);
+
+ return;
+}
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