1277c3bac4
stored at a different location in the PCI space, so adjust accordingly. Also, when using more than two smart controllers in one machine, the disks were assigned the wrong drive number; fix this as well.
536 lines
13 KiB
C
536 lines
13 KiB
C
/*-
|
|
* Copyright (c) 1999,2000 Jonathan Lemon
|
|
* All rights reserved.
|
|
*
|
|
# Derived from the original IDA Compaq RAID driver, which is
|
|
* Copyright (c) 1996, 1997, 1998, 1999
|
|
* Mark Dawson and David James. 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Generic driver for Compaq SMART RAID adapters.
|
|
*
|
|
* Specific probe routines are in:
|
|
* pci/ida_pci.c
|
|
* i386/eisa/ida_eisa.c
|
|
*/
|
|
|
|
#include <pci.h>
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/malloc.h>
|
|
|
|
#include <sys/bio.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/devicestat.h>
|
|
#include <sys/disk.h>
|
|
|
|
#if NPCI > 0
|
|
#include <machine/bus_memio.h>
|
|
#endif
|
|
#include <machine/bus_pio.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/clock.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <dev/ida/idareg.h>
|
|
#include <dev/ida/idavar.h>
|
|
|
|
/* prototypes */
|
|
static void ida_alloc_qcb(struct ida_softc *ida);
|
|
static void ida_construct_qcb(struct ida_softc *ida);
|
|
static void ida_start(struct ida_softc *ida);
|
|
static void ida_done(struct ida_softc *ida, struct ida_qcb *qcb);
|
|
static void ida_wait(struct ida_softc *ida, struct ida_qcb *qcb, int delay);
|
|
|
|
void
|
|
ida_free(struct ida_softc *ida)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ida->num_qcbs; i++)
|
|
bus_dmamap_destroy(ida->buffer_dmat, ida->qcbs[i].dmamap);
|
|
|
|
if (ida->hwqcb_busaddr)
|
|
bus_dmamap_unload(ida->hwqcb_dmat, ida->hwqcb_dmamap);
|
|
|
|
if (ida->hwqcbs)
|
|
bus_dmamem_free(ida->hwqcb_dmat, ida->hwqcbs,
|
|
ida->hwqcb_dmamap);
|
|
|
|
if (ida->buffer_dmat)
|
|
bus_dma_tag_destroy(ida->buffer_dmat);
|
|
|
|
if (ida->hwqcb_dmat)
|
|
bus_dma_tag_destroy(ida->hwqcb_dmat);
|
|
|
|
if (ida->qcbs != NULL)
|
|
free(ida->qcbs, M_DEVBUF);
|
|
|
|
if (ida->ih != NULL)
|
|
bus_teardown_intr(ida->dev, ida->irq, ida->ih);
|
|
|
|
if (ida->irq != NULL)
|
|
bus_release_resource(ida->dev, ida->irq_res_type,
|
|
0, ida->irq);
|
|
|
|
if (ida->parent_dmat != NULL)
|
|
bus_dma_tag_destroy(ida->parent_dmat);
|
|
|
|
if (ida->regs != NULL)
|
|
bus_release_resource(ida->dev, ida->regs_res_type,
|
|
ida->regs_res_id, ida->regs);
|
|
}
|
|
|
|
/*
|
|
* record bus address from bus_dmamap_load
|
|
*/
|
|
static void
|
|
ida_dma_map_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
|
|
{
|
|
bus_addr_t *baddr;
|
|
|
|
baddr = (bus_addr_t *)arg;
|
|
*baddr = segs->ds_addr;
|
|
}
|
|
|
|
static __inline struct ida_qcb *
|
|
ida_get_qcb(struct ida_softc *ida)
|
|
{
|
|
struct ida_qcb *qcb;
|
|
|
|
if ((qcb = SLIST_FIRST(&ida->free_qcbs)) != NULL) {
|
|
SLIST_REMOVE_HEAD(&ida->free_qcbs, link.sle);
|
|
} else {
|
|
ida_alloc_qcb(ida);
|
|
if ((qcb = SLIST_FIRST(&ida->free_qcbs)) != NULL)
|
|
SLIST_REMOVE_HEAD(&ida->free_qcbs, link.sle);
|
|
}
|
|
return (qcb);
|
|
}
|
|
|
|
static __inline bus_addr_t
|
|
idahwqcbvtop(struct ida_softc *ida, struct ida_hardware_qcb *hwqcb)
|
|
{
|
|
return (ida->hwqcb_busaddr +
|
|
((bus_addr_t)hwqcb - (bus_addr_t)ida->hwqcbs));
|
|
}
|
|
|
|
static __inline struct ida_qcb *
|
|
idahwqcbptov(struct ida_softc *ida, bus_addr_t hwqcb_addr)
|
|
{
|
|
struct ida_hardware_qcb *hwqcb;
|
|
|
|
hwqcb = (struct ida_hardware_qcb *)
|
|
((bus_addr_t)ida->hwqcbs + (hwqcb_addr - ida->hwqcb_busaddr));
|
|
return (hwqcb->qcb);
|
|
}
|
|
|
|
/*
|
|
* XXX
|
|
* since we allocate all QCB space up front during initialization, then
|
|
* why bother with this routine?
|
|
*/
|
|
static void
|
|
ida_alloc_qcb(struct ida_softc *ida)
|
|
{
|
|
struct ida_qcb *qcb;
|
|
int error;
|
|
|
|
if (ida->num_qcbs >= IDA_QCB_MAX)
|
|
return;
|
|
|
|
qcb = &ida->qcbs[ida->num_qcbs];
|
|
|
|
error = bus_dmamap_create(ida->buffer_dmat, /*flags*/0, &qcb->dmamap);
|
|
if (error != 0)
|
|
return;
|
|
|
|
qcb->flags = QCB_FREE;
|
|
qcb->hwqcb = &ida->hwqcbs[ida->num_qcbs];
|
|
qcb->hwqcb->qcb = qcb;
|
|
qcb->hwqcb_busaddr = idahwqcbvtop(ida, qcb->hwqcb);
|
|
SLIST_INSERT_HEAD(&ida->free_qcbs, qcb, link.sle);
|
|
ida->num_qcbs++;
|
|
}
|
|
|
|
int
|
|
ida_init(struct ida_softc *ida)
|
|
{
|
|
int error;
|
|
|
|
ida->unit = device_get_unit(ida->dev);
|
|
ida->tag = rman_get_bustag(ida->regs);
|
|
ida->bsh = rman_get_bushandle(ida->regs);
|
|
|
|
SLIST_INIT(&ida->free_qcbs);
|
|
STAILQ_INIT(&ida->qcb_queue);
|
|
bioq_init(&ida->bio_queue);
|
|
|
|
ida->qcbs = (struct ida_qcb *)
|
|
malloc(IDA_QCB_MAX * sizeof(struct ida_qcb), M_DEVBUF, M_NOWAIT);
|
|
if (ida->qcbs == NULL)
|
|
return (ENOMEM);
|
|
bzero(ida->qcbs, IDA_QCB_MAX * sizeof(struct ida_qcb));
|
|
|
|
/*
|
|
* Create our DMA tags
|
|
*/
|
|
|
|
/* DMA tag for our hardware QCB structures */
|
|
error = bus_dma_tag_create(ida->parent_dmat,
|
|
/*alignment*/1, /*boundary*/0,
|
|
/*lowaddr*/BUS_SPACE_MAXADDR, /*highaddr*/BUS_SPACE_MAXADDR,
|
|
/*filter*/NULL, /*filterarg*/NULL,
|
|
IDA_QCB_MAX * sizeof(struct ida_hardware_qcb),
|
|
/*nsegments*/1, /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
|
|
/*flags*/0, &ida->hwqcb_dmat);
|
|
if (error)
|
|
return (ENOMEM);
|
|
|
|
/* DMA tag for mapping buffers into device space */
|
|
error = bus_dma_tag_create(ida->parent_dmat,
|
|
/*alignment*/1, /*boundary*/0,
|
|
/*lowaddr*/BUS_SPACE_MAXADDR, /*highaddr*/BUS_SPACE_MAXADDR,
|
|
/*filter*/NULL, /*filterarg*/NULL,
|
|
/*maxsize*/MAXBSIZE, /*nsegments*/IDA_NSEG,
|
|
/*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/0, &ida->buffer_dmat);
|
|
if (error)
|
|
return (ENOMEM);
|
|
|
|
/* Allocation of hardware QCBs */
|
|
/* XXX allocation is rounded to hardware page size */
|
|
error = bus_dmamem_alloc(ida->hwqcb_dmat,
|
|
(void **)&ida->hwqcbs, BUS_DMA_NOWAIT, &ida->hwqcb_dmamap);
|
|
if (error)
|
|
return (ENOMEM);
|
|
|
|
/* And permanently map them in */
|
|
bus_dmamap_load(ida->hwqcb_dmat, ida->hwqcb_dmamap,
|
|
ida->hwqcbs, IDA_QCB_MAX * sizeof(struct ida_hardware_qcb),
|
|
ida_dma_map_cb, &ida->hwqcb_busaddr, /*flags*/0);
|
|
|
|
bzero(ida->hwqcbs, IDA_QCB_MAX * sizeof(struct ida_hardware_qcb));
|
|
|
|
ida_alloc_qcb(ida); /* allocate an initial qcb */
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
ida_attach(struct ida_softc *ida)
|
|
{
|
|
struct ida_controller_info cinfo;
|
|
int error, i;
|
|
|
|
ida->cmd.int_enable(ida, 0);
|
|
|
|
error = ida_command(ida, CMD_GET_CTRL_INFO, &cinfo, sizeof(cinfo),
|
|
IDA_CONTROLLER, DMA_DATA_IN);
|
|
if (error) {
|
|
device_printf(ida->dev, "CMD_GET_CTRL_INFO failed.\n");
|
|
return;
|
|
}
|
|
|
|
device_printf(ida->dev, "drives=%d firm_rev=%c%c%c%c\n",
|
|
cinfo.num_drvs, cinfo.firm_rev[0], cinfo.firm_rev[1],
|
|
cinfo.firm_rev[2], cinfo.firm_rev[3]);
|
|
|
|
if (ida->flags & IDA_FIRMWARE) {
|
|
int data;
|
|
|
|
error = ida_command(ida, CMD_START_FIRMWARE,
|
|
&data, sizeof(data), IDA_CONTROLLER, DMA_DATA_IN);
|
|
if (error) {
|
|
device_printf(ida->dev, "CMD_START_FIRMWARE failed.\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
ida->num_drives = 0;
|
|
for (i = 0; i < cinfo.num_drvs; i++)
|
|
device_add_child(ida->dev, /*"idad"*/NULL, -1);
|
|
|
|
bus_generic_attach(ida->dev);
|
|
|
|
ida->cmd.int_enable(ida, 1);
|
|
}
|
|
|
|
int
|
|
ida_detach(device_t dev)
|
|
{
|
|
struct ida_softc *ida;
|
|
int error = 0;
|
|
|
|
ida = (struct ida_softc *)device_get_softc(dev);
|
|
|
|
/*
|
|
* XXX
|
|
* before detaching, we must make sure that the system is
|
|
* quiescent; nothing mounted, no pending activity.
|
|
*/
|
|
|
|
/*
|
|
* XXX
|
|
* now, how are we supposed to maintain a list of our drives?
|
|
* iterate over our "child devices"?
|
|
*/
|
|
|
|
|
|
ida_free(ida);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
ida_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error)
|
|
{
|
|
struct ida_hardware_qcb *hwqcb = (struct ida_hardware_qcb *)arg;
|
|
int i;
|
|
|
|
hwqcb->hdr.size = (sizeof(struct ida_req) +
|
|
sizeof(struct ida_sgb) * IDA_NSEG) >> 2;
|
|
|
|
for (i = 0; i < nsegments; i++) {
|
|
hwqcb->seg[i].addr = segs[i].ds_addr;
|
|
hwqcb->seg[i].length = segs[i].ds_len;
|
|
}
|
|
hwqcb->req.sgcount = nsegments;
|
|
}
|
|
|
|
int
|
|
ida_command(struct ida_softc *ida, int command, void *data, int datasize,
|
|
int drive, int flags)
|
|
{
|
|
struct ida_hardware_qcb *hwqcb;
|
|
struct ida_qcb *qcb;
|
|
bus_dmasync_op_t op;
|
|
int s;
|
|
|
|
s = splbio();
|
|
qcb = ida_get_qcb(ida);
|
|
splx(s);
|
|
|
|
if (qcb == NULL) {
|
|
printf("ida_command: out of QCBs");
|
|
return (1);
|
|
}
|
|
|
|
hwqcb = qcb->hwqcb;
|
|
bzero(hwqcb, sizeof(struct ida_hdr) + sizeof(struct ida_req));
|
|
|
|
bus_dmamap_load(ida->buffer_dmat, qcb->dmamap,
|
|
(void *)data, datasize, ida_setup_dmamap, hwqcb, 0);
|
|
op = qcb->flags & DMA_DATA_IN ?
|
|
BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE;
|
|
bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op);
|
|
|
|
hwqcb->hdr.drive = drive;
|
|
hwqcb->req.bcount = howmany(datasize, DEV_BSIZE);
|
|
hwqcb->req.command = command;
|
|
|
|
qcb->flags = flags | IDA_COMMAND;
|
|
|
|
s = splbio();
|
|
STAILQ_INSERT_TAIL(&ida->qcb_queue, qcb, link.stqe);
|
|
ida_start(ida);
|
|
ida_wait(ida, qcb, 500);
|
|
splx(s);
|
|
|
|
/* XXX should have status returned here? */
|
|
/* XXX have "status pointer" area in QCB? */
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
ida_submit_buf(struct ida_softc *ida, struct bio *bp)
|
|
{
|
|
bioq_insert_tail(&ida->bio_queue, bp);
|
|
ida_construct_qcb(ida);
|
|
ida_start(ida);
|
|
}
|
|
|
|
static void
|
|
ida_construct_qcb(struct ida_softc *ida)
|
|
{
|
|
struct ida_hardware_qcb *hwqcb;
|
|
struct ida_qcb *qcb;
|
|
bus_dmasync_op_t op;
|
|
struct bio *bp;
|
|
|
|
bp = bioq_first(&ida->bio_queue);
|
|
if (bp == NULL)
|
|
return; /* no more buffers */
|
|
|
|
qcb = ida_get_qcb(ida);
|
|
if (qcb == NULL)
|
|
return; /* out of resources */
|
|
|
|
bioq_remove(&ida->bio_queue, bp);
|
|
qcb->buf = bp;
|
|
qcb->flags = 0;
|
|
|
|
hwqcb = qcb->hwqcb;
|
|
bzero(hwqcb, sizeof(struct ida_hdr) + sizeof(struct ida_req));
|
|
|
|
bus_dmamap_load(ida->buffer_dmat, qcb->dmamap,
|
|
(void *)bp->bio_data, bp->bio_bcount, ida_setup_dmamap, hwqcb, 0);
|
|
op = qcb->flags & DMA_DATA_IN ?
|
|
BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE;
|
|
bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op);
|
|
|
|
{
|
|
struct idad_softc *drv = (struct idad_softc *)bp->bio_driver1;
|
|
hwqcb->hdr.drive = drv->drive;
|
|
}
|
|
|
|
hwqcb->req.blkno = bp->bio_pblkno;
|
|
hwqcb->req.bcount = howmany(bp->bio_bcount, DEV_BSIZE);
|
|
hwqcb->req.command = bp->bio_cmd == BIO_READ ? CMD_READ : CMD_WRITE;
|
|
|
|
STAILQ_INSERT_TAIL(&ida->qcb_queue, qcb, link.stqe);
|
|
}
|
|
|
|
/*
|
|
* This routine will be called from ida_intr in order to queue up more
|
|
* I/O, meaning that we may be in an interrupt context. Hence, we should
|
|
* not muck around with spl() in this routine.
|
|
*/
|
|
static void
|
|
ida_start(struct ida_softc *ida)
|
|
{
|
|
struct ida_qcb *qcb;
|
|
|
|
while ((qcb = STAILQ_FIRST(&ida->qcb_queue)) != NULL) {
|
|
if (ida->cmd.fifo_full(ida))
|
|
break;
|
|
STAILQ_REMOVE_HEAD(&ida->qcb_queue, link.stqe);
|
|
/*
|
|
* XXX
|
|
* place the qcb on an active list and set a timeout?
|
|
*/
|
|
qcb->state = QCB_ACTIVE;
|
|
ida->cmd.submit(ida, qcb);
|
|
}
|
|
}
|
|
|
|
static
|
|
void
|
|
ida_wait(struct ida_softc *ida, struct ida_qcb *qcb, int delay)
|
|
{
|
|
struct ida_qcb *qcb_done = NULL;
|
|
bus_addr_t completed;
|
|
|
|
if (ida->flags & IDA_ATTACHED) {
|
|
if (tsleep((caddr_t)qcb, PRIBIO, "idacmd", delay))
|
|
panic("ida_command: timeout waiting for interrupt");
|
|
return;
|
|
}
|
|
|
|
while ((completed = ida->cmd.done(ida)) == 0) {
|
|
if (delay-- == 0)
|
|
panic("ida_wait: timeout waiting for completion");
|
|
DELAY(10);
|
|
}
|
|
|
|
qcb_done = idahwqcbptov(ida, completed & ~3);
|
|
if (qcb_done != qcb)
|
|
panic("ida_wait: incorrect qcb returned");
|
|
ida_done(ida, qcb);
|
|
return;
|
|
}
|
|
|
|
void
|
|
ida_intr(void *data)
|
|
{
|
|
struct ida_softc *ida;
|
|
struct ida_qcb *qcb;
|
|
bus_addr_t completed;
|
|
|
|
ida = (struct ida_softc *)data;
|
|
|
|
if (ida->cmd.int_pending(ida) == 0)
|
|
return; /* not our interrupt */
|
|
|
|
while ((completed = ida->cmd.done(ida)) != 0) {
|
|
qcb = idahwqcbptov(ida, completed & ~3);
|
|
|
|
if (qcb == NULL || qcb->state != QCB_ACTIVE) {
|
|
device_printf(ida->dev,
|
|
"ignoring completion %x\n", completed);
|
|
continue;
|
|
}
|
|
ida_done(ida, qcb);
|
|
}
|
|
ida_start(ida);
|
|
}
|
|
|
|
/*
|
|
* should switch out command type; may be status, not just I/O.
|
|
*/
|
|
static void
|
|
ida_done(struct ida_softc *ida, struct ida_qcb *qcb)
|
|
{
|
|
int error = 0;
|
|
|
|
/*
|
|
* finish up command
|
|
*/
|
|
if (qcb->flags & DMA_DATA_TRANSFER) {
|
|
bus_dmasync_op_t op;
|
|
|
|
op = qcb->flags & DMA_DATA_IN ?
|
|
BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE;
|
|
bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op);
|
|
bus_dmamap_unload(ida->buffer_dmat, qcb->dmamap);
|
|
}
|
|
|
|
if (qcb->hwqcb->req.error & SOFT_ERROR)
|
|
device_printf(ida->dev, "soft error\n");
|
|
if (qcb->hwqcb->req.error & HARD_ERROR) {
|
|
error = 1;
|
|
device_printf(ida->dev, "hard error\n");
|
|
}
|
|
if (qcb->hwqcb->req.error & CMD_REJECTED) {
|
|
error = 1;
|
|
device_printf(ida->dev, "invalid request\n");
|
|
}
|
|
|
|
if (qcb->flags & IDA_COMMAND) {
|
|
if (ida->flags & IDA_ATTACHED)
|
|
wakeup(qcb);
|
|
} else {
|
|
if (error)
|
|
qcb->buf->bio_flags |= BIO_ERROR;
|
|
idad_intr(qcb->buf);
|
|
}
|
|
|
|
qcb->state = QCB_FREE;
|
|
SLIST_INSERT_HEAD(&ida->free_qcbs, qcb, link.sle);
|
|
ida_construct_qcb(ida);
|
|
}
|