e01fc931cf
in geom_disk.c. As a side effect this makes a lot of #include <sys/devicestat.h> lines not needed and some biofinish() calls can be reduced to biodone() again.
377 lines
8.5 KiB
C
377 lines
8.5 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include "opt_aac.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <sys/bus.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/disk.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
|
|
#include <machine/md_var.h>
|
|
#include <machine/bus.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <dev/aac/aacreg.h>
|
|
#include <dev/aac/aac_ioctl.h>
|
|
#include <dev/aac/aacvar.h>
|
|
|
|
/*
|
|
* Interface to parent.
|
|
*/
|
|
static int aac_disk_probe(device_t dev);
|
|
static int aac_disk_attach(device_t dev);
|
|
static int aac_disk_detach(device_t dev);
|
|
|
|
/*
|
|
* Interface to the device switch.
|
|
*/
|
|
static disk_open_t aac_disk_open;
|
|
static disk_close_t aac_disk_close;
|
|
static disk_strategy_t aac_disk_strategy;
|
|
static dumper_t aac_disk_dump;
|
|
|
|
static devclass_t aac_disk_devclass;
|
|
|
|
static device_method_t aac_disk_methods[] = {
|
|
DEVMETHOD(device_probe, aac_disk_probe),
|
|
DEVMETHOD(device_attach, aac_disk_attach),
|
|
DEVMETHOD(device_detach, aac_disk_detach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t aac_disk_driver = {
|
|
"aacd",
|
|
aac_disk_methods,
|
|
sizeof(struct aac_disk)
|
|
};
|
|
|
|
#define AAC_MAXIO 65536
|
|
|
|
DRIVER_MODULE(aacd, aac, aac_disk_driver, aac_disk_devclass, 0, 0);
|
|
|
|
/* sysctl tunables */
|
|
static unsigned int aac_iosize_max = AAC_MAXIO; /* due to limits of the card */
|
|
TUNABLE_INT("hw.aac.iosize_max", &aac_iosize_max);
|
|
|
|
SYSCTL_DECL(_hw_aac);
|
|
SYSCTL_UINT(_hw_aac, OID_AUTO, iosize_max, CTLFLAG_RD, &aac_iosize_max, 0,
|
|
"Max I/O size per transfer to an array");
|
|
|
|
/*
|
|
* Handle open from generic layer.
|
|
*
|
|
* This is called by the diskslice code on first open in order to get the
|
|
* basic device geometry paramters.
|
|
*/
|
|
static int
|
|
aac_disk_open(struct disk *dp)
|
|
{
|
|
struct aac_disk *sc;
|
|
|
|
debug_called(4);
|
|
|
|
sc = (struct aac_disk *)dp->d_drv1;
|
|
|
|
if (sc == NULL) {
|
|
printf("aac_disk_open: No Softc\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
/* check that the controller is up and running */
|
|
if (sc->ad_controller->aac_state & AAC_STATE_SUSPEND) {
|
|
printf("Controller Suspended controller state = 0x%x\n",
|
|
sc->ad_controller->aac_state);
|
|
return(ENXIO);
|
|
}
|
|
|
|
sc->ad_flags |= AAC_DISK_OPEN;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Handle last close of the disk device.
|
|
*/
|
|
static int
|
|
aac_disk_close(struct disk *dp)
|
|
{
|
|
struct aac_disk *sc;
|
|
|
|
debug_called(4);
|
|
|
|
sc = (struct aac_disk *)dp->d_drv1;
|
|
|
|
if (sc == NULL)
|
|
return (ENXIO);
|
|
|
|
sc->ad_flags &= ~AAC_DISK_OPEN;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Handle an I/O request.
|
|
*/
|
|
static void
|
|
aac_disk_strategy(struct bio *bp)
|
|
{
|
|
struct aac_disk *sc;
|
|
|
|
debug_called(4);
|
|
|
|
sc = (struct aac_disk *)bp->bio_disk->d_drv1;
|
|
|
|
/* bogus disk? */
|
|
if (sc == NULL) {
|
|
bp->bio_flags |= BIO_ERROR;
|
|
bp->bio_error = EINVAL;
|
|
biodone(bp);
|
|
return;
|
|
}
|
|
|
|
/* do-nothing operation? */
|
|
if (bp->bio_bcount == 0) {
|
|
bp->bio_resid = bp->bio_bcount;
|
|
biodone(bp);
|
|
return;
|
|
}
|
|
|
|
/* perform accounting */
|
|
|
|
/* pass the bio to the controller - it can work out who we are */
|
|
AAC_LOCK_ACQUIRE(&sc->ad_controller->aac_io_lock);
|
|
aac_submit_bio(bp);
|
|
AAC_LOCK_RELEASE(&sc->ad_controller->aac_io_lock);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Map the S/G elements for doing a dump.
|
|
*/
|
|
static void
|
|
aac_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
|
|
{
|
|
struct aac_fib *fib;
|
|
struct aac_blockwrite *bw;
|
|
struct aac_sg_table *sg;
|
|
int i;
|
|
|
|
fib = (struct aac_fib *)arg;
|
|
bw = (struct aac_blockwrite *)&fib->data[0];
|
|
sg = &bw->SgMap;
|
|
|
|
if (sg != NULL) {
|
|
sg->SgCount = nsegs;
|
|
for (i = 0; i < nsegs; i++) {
|
|
sg->SgEntry[i].SgAddress = segs[i].ds_addr;
|
|
sg->SgEntry[i].SgByteCount = segs[i].ds_len;
|
|
}
|
|
fib->Header.Size = nsegs * sizeof(struct aac_sg_entry);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dump memory out to an array
|
|
*
|
|
* Send out one command at a time with up to AAC_MAXIO of data.
|
|
*/
|
|
static int
|
|
aac_disk_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
|
|
{
|
|
struct aac_disk *ad;
|
|
struct aac_softc *sc;
|
|
struct aac_fib *fib;
|
|
struct aac_blockwrite *bw;
|
|
size_t len;
|
|
int size;
|
|
static bus_dmamap_t dump_datamap;
|
|
static int first = 0;
|
|
struct disk *dp;
|
|
|
|
dp = arg;
|
|
ad = dp->d_drv1;
|
|
|
|
if (ad == NULL)
|
|
return (EINVAL);
|
|
|
|
sc= ad->ad_controller;
|
|
|
|
if (!first) {
|
|
first = 1;
|
|
if (bus_dmamap_create(sc->aac_buffer_dmat, 0, &dump_datamap)) {
|
|
printf("bus_dmamap_create failed\n");
|
|
return (ENOMEM);
|
|
}
|
|
}
|
|
|
|
aac_alloc_sync_fib(sc, &fib, AAC_SYNC_LOCK_FORCE);
|
|
bw = (struct aac_blockwrite *)&fib->data[0];
|
|
|
|
while (length > 0) {
|
|
len = (length > AAC_MAXIO) ? AAC_MAXIO : length;
|
|
bw->Command = VM_CtBlockWrite;
|
|
bw->ContainerId = ad->ad_container->co_mntobj.ObjectId;
|
|
bw->BlockNumber = offset / AAC_BLOCK_SIZE;
|
|
bw->ByteCount = len;
|
|
bw->Stable = CUNSTABLE;
|
|
bus_dmamap_load(sc->aac_buffer_dmat, dump_datamap, virtual,
|
|
len, aac_dump_map_sg, fib, 0);
|
|
bus_dmamap_sync(sc->aac_buffer_dmat, dump_datamap,
|
|
BUS_DMASYNC_PREWRITE);
|
|
|
|
/* fib->Header.Size is set in aac_dump_map_sg */
|
|
size = fib->Header.Size + sizeof(struct aac_blockwrite);
|
|
|
|
if (aac_sync_fib(sc, ContainerCommand, 0, fib, size)) {
|
|
printf("Error dumping block 0x%x\n", physical);
|
|
return (EIO);
|
|
}
|
|
length -= len;
|
|
offset += len;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Handle completion of an I/O request.
|
|
*/
|
|
void
|
|
aac_biodone(struct bio *bp)
|
|
{
|
|
struct aac_disk *sc;
|
|
|
|
debug_called(4);
|
|
|
|
sc = (struct aac_disk *)bp->bio_disk->d_drv1;
|
|
|
|
if (bp->bio_flags & BIO_ERROR)
|
|
disk_err(bp, "hard error", -1, 1);
|
|
|
|
biodone(bp);
|
|
}
|
|
|
|
/*
|
|
* Stub only.
|
|
*/
|
|
static int
|
|
aac_disk_probe(device_t dev)
|
|
{
|
|
|
|
debug_called(2);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Attach a unit to the controller.
|
|
*/
|
|
static int
|
|
aac_disk_attach(device_t dev)
|
|
{
|
|
struct aac_disk *sc;
|
|
|
|
debug_called(1);
|
|
|
|
sc = (struct aac_disk *)device_get_softc(dev);
|
|
|
|
/* initialise our softc */
|
|
sc->ad_controller =
|
|
(struct aac_softc *)device_get_softc(device_get_parent(dev));
|
|
sc->ad_container = device_get_ivars(dev);
|
|
sc->ad_dev = dev;
|
|
|
|
/*
|
|
* require that extended translation be enabled - other drivers read the
|
|
* disk!
|
|
*/
|
|
sc->ad_size = sc->ad_container->co_mntobj.Capacity;
|
|
if (sc->ad_size >= (2 * 1024 * 1024)) { /* 2GB */
|
|
sc->ad_heads = 255;
|
|
sc->ad_sectors = 63;
|
|
} else if (sc->ad_size >= (1 * 1024 * 1024)) { /* 1GB */
|
|
sc->ad_heads = 128;
|
|
sc->ad_sectors = 32;
|
|
} else {
|
|
sc->ad_heads = 64;
|
|
sc->ad_sectors = 32;
|
|
}
|
|
sc->ad_cylinders = (sc->ad_size / (sc->ad_heads * sc->ad_sectors));
|
|
|
|
device_printf(dev, "%uMB (%u sectors)\n",
|
|
sc->ad_size / ((1024 * 1024) / AAC_BLOCK_SIZE),
|
|
sc->ad_size);
|
|
|
|
/* attach a generic disk device to ourselves */
|
|
sc->unit = device_get_unit(dev);
|
|
sc->ad_disk.d_drv1 = sc;
|
|
sc->ad_disk.d_name = "aacd";
|
|
sc->ad_disk.d_maxsize = aac_iosize_max;
|
|
sc->ad_disk.d_open = aac_disk_open;
|
|
sc->ad_disk.d_close = aac_disk_close;
|
|
sc->ad_disk.d_strategy = aac_disk_strategy;
|
|
sc->ad_disk.d_dump = aac_disk_dump;
|
|
sc->ad_disk.d_sectorsize = AAC_BLOCK_SIZE;
|
|
sc->ad_disk.d_mediasize = (off_t)sc->ad_size * AAC_BLOCK_SIZE;
|
|
sc->ad_disk.d_fwsectors = sc->ad_sectors;
|
|
sc->ad_disk.d_fwheads = sc->ad_heads;
|
|
disk_create(sc->unit, &sc->ad_disk, DISKFLAG_NOGIANT, NULL, NULL);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Disconnect ourselves from the system.
|
|
*/
|
|
static int
|
|
aac_disk_detach(device_t dev)
|
|
{
|
|
struct aac_disk *sc;
|
|
|
|
debug_called(2);
|
|
|
|
sc = (struct aac_disk *)device_get_softc(dev);
|
|
|
|
if (sc->ad_flags & AAC_DISK_OPEN)
|
|
return(EBUSY);
|
|
|
|
disk_destroy(&sc->ad_disk);
|
|
|
|
return(0);
|
|
}
|