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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/dev/ata/ata-disk.c |
/*-
* Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
* 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,
* without modification, immediately at the beginning of the file.
* 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 ``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 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/ata/ata-disk.c 233717 2012-03-30 23:56:16Z marius $");
#include "opt_ata.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ata.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/bio.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/disk.h>
#include <sys/cons.h>
#include <sys/sema.h>
#include <sys/taskqueue.h>
#include <vm/uma.h>
#include <machine/md_var.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <geom/geom_disk.h>
#include <dev/ata/ata-all.h>
#include <dev/ata/ata-pci.h>
#include <dev/ata/ata-disk.h>
#include <dev/ata/ata-raid.h>
#include <dev/pci/pcivar.h>
#include <ata_if.h>
/* prototypes */
static void ad_init(device_t dev);
static int ad_get_geometry(device_t dev);
static void ad_set_geometry(device_t dev);
static void ad_done(struct ata_request *request);
static void ad_describe(device_t dev);
static int ad_version(u_int16_t version);
static disk_strategy_t ad_strategy;
static disk_ioctl_t ad_ioctl;
static dumper_t ad_dump;
/*
* Most platforms map firmware geom to actual, but some don't. If
* not overridden, default to nothing.
*/
#ifndef ata_disk_firmware_geom_adjust
#define ata_disk_firmware_geom_adjust(disk)
#endif
/* local vars */
static MALLOC_DEFINE(M_AD, "ad_driver", "ATA disk driver");
static int
ad_probe(device_t dev)
{
struct ata_device *atadev = device_get_softc(dev);
if (!(atadev->param.config & ATA_PROTO_ATAPI) ||
(atadev->param.config == ATA_CFA_MAGIC1) ||
(atadev->param.config == ATA_CFA_MAGIC2) ||
(atadev->param.config == ATA_CFA_MAGIC3))
return 0;
else
return ENXIO;
}
static int
ad_attach(device_t dev)
{
struct ata_channel *ch = device_get_softc(device_get_parent(dev));
struct ata_device *atadev = device_get_softc(dev);
struct ad_softc *adp;
device_t parent;
/* check that we have a virgin disk to attach */
if (device_get_ivars(dev))
return EEXIST;
if (!(adp = malloc(sizeof(struct ad_softc), M_AD, M_NOWAIT | M_ZERO))) {
device_printf(dev, "out of memory\n");
return ENOMEM;
}
device_set_ivars(dev, adp);
/* get device geometry into internal structs */
if (ad_get_geometry(dev))
return ENXIO;
/* set the max size if configured */
if (ata_setmax)
ad_set_geometry(dev);
/* init device parameters */
ad_init(dev);
/* announce we are here */
ad_describe(dev);
/* create the disk device */
adp->disk = disk_alloc();
adp->disk->d_strategy = ad_strategy;
adp->disk->d_ioctl = ad_ioctl;
adp->disk->d_dump = ad_dump;
adp->disk->d_name = "ad";
adp->disk->d_drv1 = dev;
adp->disk->d_maxsize = ch->dma.max_iosize ? ch->dma.max_iosize : DFLTPHYS;
if (atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48)
adp->disk->d_maxsize = min(adp->disk->d_maxsize, 65536 * DEV_BSIZE);
else /* 28bit ATA command limit */
adp->disk->d_maxsize = min(adp->disk->d_maxsize, 256 * DEV_BSIZE);
adp->disk->d_sectorsize = DEV_BSIZE;
adp->disk->d_mediasize = DEV_BSIZE * (off_t)adp->total_secs;
adp->disk->d_fwsectors = adp->sectors;
adp->disk->d_fwheads = adp->heads;
adp->disk->d_unit = device_get_unit(dev);
if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
adp->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
if ((atadev->param.support.command2 & ATA_SUPPORT_CFA) ||
atadev->param.config == ATA_PROTO_CFA)
adp->disk->d_flags |= DISKFLAG_CANDELETE;
strlcpy(adp->disk->d_ident, atadev->param.serial,
sizeof(adp->disk->d_ident));
strlcpy(adp->disk->d_descr, atadev->param.model,
sizeof(adp->disk->d_descr));
parent = device_get_parent(ch->dev);
if (parent != NULL && device_get_parent(parent) != NULL &&
(device_get_devclass(parent) ==
devclass_find("atapci") ||
device_get_devclass(device_get_parent(parent)) ==
devclass_find("pci"))) {
adp->disk->d_hba_vendor = pci_get_vendor(parent);
adp->disk->d_hba_device = pci_get_device(parent);
adp->disk->d_hba_subvendor = pci_get_subvendor(parent);
adp->disk->d_hba_subdevice = pci_get_subdevice(parent);
}
ata_disk_firmware_geom_adjust(adp->disk);
disk_create(adp->disk, DISK_VERSION);
device_add_child(dev, "subdisk", device_get_unit(dev));
bus_generic_attach(dev);
callout_init(&atadev->spindown_timer, 1);
return 0;
}
static int
ad_detach(device_t dev)
{
struct ad_softc *adp = device_get_ivars(dev);
struct ata_device *atadev = device_get_softc(dev);
/* check that we have a valid disk to detach */
if (!device_get_ivars(dev))
return ENXIO;
/* destroy the power timeout */
callout_drain(&atadev->spindown_timer);
/* detach & delete all children */
device_delete_children(dev);
/* destroy disk from the system so we don't get any further requests */
disk_destroy(adp->disk);
/* fail requests on the queue and any that's "in flight" for this device */
ata_fail_requests(dev);
/* don't leave anything behind */
device_set_ivars(dev, NULL);
free(adp, M_AD);
return 0;
}
static int
ad_shutdown(device_t dev)
{
struct ata_device *atadev = device_get_softc(dev);
if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0);
return 0;
}
static int
ad_reinit(device_t dev)
{
struct ata_channel *ch = device_get_softc(device_get_parent(dev));
struct ata_device *atadev = device_get_softc(dev);
/* if detach pending, return error */
if (!(ch->devices & (ATA_ATA_MASTER << atadev->unit)))
return 1;
ad_init(dev);
return 0;
}
static void
ad_power_callback(struct ata_request *request)
{
device_printf(request->dev, "drive spun down.\n");
ata_free_request(request);
}
static void
ad_spindown(void *priv)
{
device_t dev = priv;
struct ata_device *atadev = device_get_softc(dev);
struct ata_request *request;
if (!atadev->spindown)
return;
device_printf(dev, "Idle, spin down\n");
atadev->spindown_state = 1;
if (!(request = ata_alloc_request())) {
device_printf(dev, "FAILURE - out of memory in ad_spindown\n");
return;
}
request->dev = dev;
request->flags = ATA_R_CONTROL;
request->timeout = ATA_REQUEST_TIMEOUT;
request->retries = 1;
request->callback = ad_power_callback;
request->u.ata.command = ATA_STANDBY_IMMEDIATE;
ata_queue_request(request);
}
static void
ad_strategy(struct bio *bp)
{
device_t dev = bp->bio_disk->d_drv1;
struct ata_device *atadev = device_get_softc(dev);
struct ata_request *request;
if (atadev->spindown)
callout_reset(&atadev->spindown_timer, hz * atadev->spindown,
ad_spindown, dev);
if (!(request = ata_alloc_request())) {
device_printf(dev, "FAILURE - out of memory in start\n");
biofinish(bp, NULL, ENOMEM);
return;
}
/* setup request */
request->dev = dev;
request->bio = bp;
request->callback = ad_done;
if (atadev->spindown_state) {
device_printf(dev, "request while spun down, starting.\n");
atadev->spindown_state = 0;
request->timeout = MAX(ATA_REQUEST_TIMEOUT, 31);
}
else {
request->timeout = ATA_REQUEST_TIMEOUT;
}
request->retries = 2;
request->data = bp->bio_data;
request->bytecount = bp->bio_bcount;
request->u.ata.lba = bp->bio_pblkno;
request->u.ata.count = request->bytecount / DEV_BSIZE;
request->transfersize = min(bp->bio_bcount, atadev->max_iosize);
switch (bp->bio_cmd) {
case BIO_READ:
request->flags = ATA_R_READ;
if (atadev->mode >= ATA_DMA) {
request->u.ata.command = ATA_READ_DMA;
request->flags |= ATA_R_DMA;
}
else if (request->transfersize > DEV_BSIZE)
request->u.ata.command = ATA_READ_MUL;
else
request->u.ata.command = ATA_READ;
break;
case BIO_WRITE:
request->flags = ATA_R_WRITE;
if (atadev->mode >= ATA_DMA) {
request->u.ata.command = ATA_WRITE_DMA;
request->flags |= ATA_R_DMA;
}
else if (request->transfersize > DEV_BSIZE)
request->u.ata.command = ATA_WRITE_MUL;
else
request->u.ata.command = ATA_WRITE;
break;
case BIO_DELETE:
request->flags = ATA_R_CONTROL;
request->u.ata.command = ATA_CFA_ERASE;
request->transfersize = 0;
request->donecount = bp->bio_bcount;
break;
case BIO_FLUSH:
request->u.ata.lba = 0;
request->u.ata.count = 0;
request->u.ata.feature = 0;
request->bytecount = 0;
request->transfersize = 0;
request->flags = ATA_R_CONTROL;
request->u.ata.command = ATA_FLUSHCACHE;
break;
default:
device_printf(dev, "FAILURE - unknown BIO operation\n");
ata_free_request(request);
biofinish(bp, NULL, EIO);
return;
}
request->flags |= ATA_R_ORDERED;
ata_queue_request(request);
}
static void
ad_done(struct ata_request *request)
{
struct bio *bp = request->bio;
/* finish up transfer */
if ((bp->bio_error = request->result))
bp->bio_flags |= BIO_ERROR;
bp->bio_resid = bp->bio_bcount - request->donecount;
biodone(bp);
ata_free_request(request);
}
static int
ad_ioctl(struct disk *disk, u_long cmd, void *data, int flag, struct thread *td)
{
return ata_device_ioctl(disk->d_drv1, cmd, data);
}
static int
ad_dump(void *arg, void *virtual, vm_offset_t physical,
off_t offset, size_t length)
{
struct disk *dp = arg;
device_t dev = dp->d_drv1;
struct bio bp;
/* XXX: Drop pre-dump request queue. Long request queue processing
* causes stack overflow in ATA working in dumping (interruptless) mode.
* Conter-XXX: To make dump coherent we should avoid doing anything
* else while dumping.
*/
ata_drop_requests(dev);
/* length zero is special and really means flush buffers to media */
if (!length) {
struct ata_device *atadev = device_get_softc(dev);
int error = 0;
if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
error = ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0);
return error;
}
bzero(&bp, sizeof(struct bio));
bp.bio_disk = dp;
bp.bio_pblkno = offset / DEV_BSIZE;
bp.bio_bcount = length;
bp.bio_data = virtual;
bp.bio_cmd = BIO_WRITE;
ad_strategy(&bp);
return bp.bio_error;
}
static void
ad_init(device_t dev)
{
struct ata_device *atadev = device_get_softc(dev);
ata_setmode(dev);
/* enable readahead caching */
if (atadev->param.support.command1 & ATA_SUPPORT_LOOKAHEAD)
ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_ENAB_RCACHE, 0, 0);
/* enable write caching if supported and configured */
if (atadev->param.support.command1 & ATA_SUPPORT_WRITECACHE) {
if (ata_wc)
ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_ENAB_WCACHE, 0, 0);
else
ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_DIS_WCACHE, 0, 0);
}
/* use multiple sectors/interrupt if device supports it */
if (ad_version(atadev->param.version_major)) {
int secsperint = max(1, min(atadev->param.sectors_intr & 0xff, 16));
if (!ata_controlcmd(dev, ATA_SET_MULTI, 0, 0, secsperint))
atadev->max_iosize = secsperint * DEV_BSIZE;
else
atadev->max_iosize = DEV_BSIZE;
}
else
atadev->max_iosize = DEV_BSIZE;
}
static int
ad_get_geometry(device_t dev)
{
struct ata_device *atadev = device_get_softc(dev);
struct ad_softc *adp = device_get_ivars(dev);
u_int64_t lbasize48;
u_int32_t lbasize;
if ((atadev->param.atavalid & ATA_FLAG_54_58) &&
atadev->param.current_heads && atadev->param.current_sectors) {
adp->heads = atadev->param.current_heads;
adp->sectors = atadev->param.current_sectors;
adp->total_secs = (u_int32_t)atadev->param.current_size_1 |
((u_int32_t)atadev->param.current_size_2 << 16);
}
else {
adp->heads = atadev->param.heads;
adp->sectors = atadev->param.sectors;
adp->total_secs = atadev->param.cylinders * adp->heads * adp->sectors;
}
lbasize = (u_int32_t)atadev->param.lba_size_1 |
((u_int32_t)atadev->param.lba_size_2 << 16);
/* This device exists, but has no size. Filter out this bogus device. */
if (!lbasize && !adp->total_secs)
return ENXIO;
/* does this device need oldstyle CHS addressing */
if (!ad_version(atadev->param.version_major) || !lbasize)
atadev->flags |= ATA_D_USE_CHS;
/* use the 28bit LBA size if valid or bigger than the CHS mapping */
if (atadev->param.cylinders == 16383 || adp->total_secs < lbasize)
adp->total_secs = lbasize;
/* use the 48bit LBA size if valid */
lbasize48 = ((u_int64_t)atadev->param.lba_size48_1) |
((u_int64_t)atadev->param.lba_size48_2 << 16) |
((u_int64_t)atadev->param.lba_size48_3 << 32) |
((u_int64_t)atadev->param.lba_size48_4 << 48);
if ((atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) &&
lbasize48 > ATA_MAX_28BIT_LBA)
adp->total_secs = lbasize48;
return 0;
}
static void
ad_set_geometry(device_t dev)
{
struct ad_softc *adp = device_get_ivars(dev);
struct ata_request *request;
if (1 | bootverbose)
device_printf(dev, "ORG %ju sectors [%juC/%dH/%dS]\n", adp->total_secs,
adp->total_secs / (adp->heads * adp->sectors),
adp->heads, adp->sectors);
if (!(request = ata_alloc_request()))
return;
/* get the max native size the device supports */
request->dev = dev;
request->u.ata.command = ATA_READ_NATIVE_MAX_ADDRESS;
request->u.ata.lba = 0;
request->u.ata.count = 0;
request->u.ata.feature = 0;
request->flags = ATA_R_CONTROL | ATA_R_QUIET;
request->timeout = ATA_REQUEST_TIMEOUT;
request->retries = 0;
ata_queue_request(request);
if (request->status & ATA_S_ERROR)
goto out;
if (1 | bootverbose)
device_printf(dev, "MAX %ju sectors\n", request->u.ata.lba + 1);
/* if original size equals max size nothing more todo */
if (adp->total_secs >= request->u.ata.lba)
goto out;
/* set the max native size to its max */
request->dev = dev;
request->u.ata.command = ATA_SET_MAX_ADDRESS;
request->u.ata.count = 1;
request->u.ata.feature = 0;
request->flags = ATA_R_CONTROL;
request->timeout = ATA_REQUEST_TIMEOUT;
request->retries = 0;
ata_queue_request(request);
if (request->status & ATA_S_ERROR)
goto out;
/* refresh geometry from drive */
ata_getparam(device_get_softc(dev), 0);
ad_get_geometry(dev);
if (1 | bootverbose)
device_printf(dev, "NEW %ju sectors [%juC/%dH/%dS]\n", adp->total_secs,
adp->total_secs / (adp->heads * adp->sectors),
adp->heads, adp->sectors);
out:
ata_free_request(request);
}
static void
ad_describe(device_t dev)
{
struct ata_channel *ch = device_get_softc(device_get_parent(dev));
struct ata_device *atadev = device_get_softc(dev);
struct ad_softc *adp = device_get_ivars(dev);
u_int8_t *marker, vendor[64], product[64];
/* try to separate the ATA model string into vendor and model parts */
if ((marker = index(atadev->param.model, ' ')) ||
(marker = index(atadev->param.model, '-'))) {
int len = (marker - atadev->param.model);
strncpy(vendor, atadev->param.model, len);
vendor[len++] = 0;
strcat(vendor, " ");
strncpy(product, atadev->param.model + len, 40 - len);
vendor[40 - len] = 0;
}
else {
if (!strncmp(atadev->param.model, "ST", 2))
strcpy(vendor, "Seagate ");
else if (!strncmp(atadev->param.model, "HDS", 3))
strcpy(vendor, "Hitachi ");
else
strcpy(vendor, "");
strncpy(product, atadev->param.model, 40);
}
device_printf(dev, "%juMB <%s%s %.8s> at ata%d-%s %s%s %s\n",
adp->total_secs / (1048576 / DEV_BSIZE),
vendor, product, atadev->param.revision,
device_get_unit(ch->dev), ata_unit2str(atadev),
(adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
ata_mode2str(atadev->mode),
ata_satarev2str(ATA_GETREV(device_get_parent(dev), atadev->unit)));
if (bootverbose) {
device_printf(dev, "%ju sectors [%juC/%dH/%dS] "
"%d sectors/interrupt %d depth queue\n", adp->total_secs,
adp->total_secs / (adp->heads * adp->sectors),
adp->heads, adp->sectors, atadev->max_iosize / DEV_BSIZE,
adp->num_tags + 1);
}
}
static int
ad_version(u_int16_t version)
{
int bit;
if (version == 0xffff)
return 0;
for (bit = 15; bit >= 0; bit--)
if (version & (1<<bit))
return bit;
return 0;
}
static device_method_t ad_methods[] = {
/* device interface */
DEVMETHOD(device_probe, ad_probe),
DEVMETHOD(device_attach, ad_attach),
DEVMETHOD(device_detach, ad_detach),
DEVMETHOD(device_shutdown, ad_shutdown),
/* ATA methods */
DEVMETHOD(ata_reinit, ad_reinit),
DEVMETHOD_END
};
static driver_t ad_driver = {
"ad",
ad_methods,
0,
};
devclass_t ad_devclass;
DRIVER_MODULE(ad, ata, ad_driver, ad_devclass, NULL, NULL);
MODULE_VERSION(ad, 1);
MODULE_DEPEND(ad, ata, 1, 1, 1);