8ca4df3299
o ATA is now fully newbus'd and split into modules.
This means that on a modern system you just load "atapci and ata"
to get the base support, and then one or more of the device
subdrivers "atadisk atapicd atapifd atapist ataraid".
All can be loaded/unloaded anytime, but for obvious reasons you
dont want to unload atadisk when you have mounted filesystems.
o The device identify part of the probe has been rewritten to fix
the problems with odd devices the old had, and to try to remove
so of the long delays some HW could provoke. Also probing is done
without the need for interrupts, making earlier probing possible.
o SATA devices can be hot inserted/removed and devices will be created/
removed in /dev accordingly.
NOTE: only supported on controllers that has this feature:
Promise and Silicon Image for now.
On other controllers the usual atacontrol detach/attach dance is
still needed.
o Support for "atomic" composite ATA requests used for RAID.
o ATA RAID support has been rewritten and and now supports these
metadata formats:
"Adaptec HostRAID"
"Highpoint V2 RocketRAID"
"Highpoint V3 RocketRAID"
"Intel MatrixRAID"
"Integrated Technology Express"
"LSILogic V2 MegaRAID"
"LSILogic V3 MegaRAID"
"Promise FastTrak"
"Silicon Image Medley"
"FreeBSD PseudoRAID"
o Update the ioctl API to match new RAID levels etc.
o Update atacontrol to know about the new RAID levels etc
NOTE: you need to recompile atacontrol with the new sys/ata.h,
make world will take care of that.
NOTE2: that rebuild is done differently from the old system as
the rebuild is now done piggybacked on read requests to the
array, so atacontrol simply starts a background "dd" to rebuild
the array.
o The reinit code has been worked over to be much more robust.
o The timeout code has been overhauled for races.
o Support of new chipsets.
o Lots of fixes for bugs found while doing the modulerization and
reviewing the old code.
Missing or changed features from current ATA:
o atapi-cd no longer has support for ATAPI changers. Todays its
much cheaper and alot faster to copy those CD images to disk
and serve them from there. Besides they dont seem to be made
anymore, maybe for that exact reason.
o ATA RAID can only read metadata from all the above metadata formats,
not write all of them (Promise and Highpoint V2 so far). This means
that arrays can be picked up from the BIOS, but they cannot be
created from FreeBSD. There is more to it than just the missing
write metadata support, those formats are not unique to a given
controller like Promise and Highpoint formats, instead they exist
for several types, and even worse, some controllers can have
different formats and its impossible to tell which one.
The outcome is that we cannot reliably create the metadata of those
formats and be sure the controller BIOS will understand it.
However write support is needed to update/fail/rebuild the arrays
properly so it sits fairly high on the TODO list.
o So far atapicam is not supported with these changes. When/if this
will change is up to the maintainer of atapi-cam so go there for
questions.
HW donated by: Webveveriet AS
HW donated by: Frode Nordahl
HW donated by: Yahoo!
HW donated by: Sentex
Patience by: Vife and my boys (and even the cats)
461 lines
13 KiB
C
461 lines
13 KiB
C
/*-
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* Copyright (c) 1998 - 2005 Søren Schmidt <sos@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_ata.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/ata.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/disk.h>
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#include <sys/cons.h>
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#include <sys/sysctl.h>
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#include <sys/sema.h>
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#include <sys/taskqueue.h>
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#include <vm/uma.h>
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#include <machine/md_var.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <geom/geom_disk.h>
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#include <dev/ata/ata-all.h>
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#include <dev/ata/ata-pci.h>
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#include <dev/ata/ata-disk.h>
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#include <dev/ata/ata-raid.h>
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#include <ata_if.h>
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/* prototypes */
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static void ad_init(device_t);
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static void ad_done(struct ata_request *);
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static void ad_describe(device_t dev);
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static int ad_version(u_int16_t);
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static disk_strategy_t ad_strategy;
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static dumper_t ad_dump;
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/* local vars */
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static MALLOC_DEFINE(M_AD, "AD driver", "ATA disk driver");
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static void
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ad_identify(driver_t *driver, device_t parent)
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{
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ata_identify(driver, parent, -1, "ad");
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}
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static int
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ad_probe(device_t dev)
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{
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return 0;
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}
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static int
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ad_attach(device_t dev)
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{
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struct ata_channel *ch = device_get_softc(device_get_parent(dev));
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struct ata_device *atadev = device_get_softc(dev);
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struct ad_softc *adp;
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u_int32_t lbasize;
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u_int64_t lbasize48;
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/* check that we have a virgin disk to attach */
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if (device_get_ivars(dev))
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return EEXIST;
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if (!(adp = malloc(sizeof(struct ad_softc), M_AD, M_NOWAIT | M_ZERO))) {
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device_printf(dev, "out of memory\n");
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device_set_softc(dev, NULL);
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free(atadev, M_ATA);
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return ENOMEM;
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}
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device_set_ivars(dev, adp);
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if (atadev->param.atavalid & ATA_FLAG_54_58) {
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adp->heads = atadev->param.current_heads;
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adp->sectors = atadev->param.current_sectors;
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adp->total_secs = (u_int32_t)atadev->param.current_size_1 |
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((u_int32_t)atadev->param.current_size_2 << 16);
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}
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else {
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adp->heads = atadev->param.heads;
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adp->sectors = atadev->param.sectors;
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adp->total_secs = atadev->param.cylinders * adp->heads * adp->sectors;
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}
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lbasize = (u_int32_t)atadev->param.lba_size_1 |
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((u_int32_t)atadev->param.lba_size_2 << 16);
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/* does this device need oldstyle CHS addressing */
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if (!ad_version(atadev->param.version_major) || !lbasize)
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atadev->flags |= ATA_D_USE_CHS;
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/* use the 28bit LBA size if valid or bigger than the CHS mapping */
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if (atadev->param.cylinders == 16383 || adp->total_secs < lbasize)
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adp->total_secs = lbasize;
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/* use the 48bit LBA size if valid */
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lbasize48 = ((u_int64_t)atadev->param.lba_size48_1) |
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((u_int64_t)atadev->param.lba_size48_2 << 16) |
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((u_int64_t)atadev->param.lba_size48_3 << 32) |
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((u_int64_t)atadev->param.lba_size48_4 << 48);
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if ((atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48) &&
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lbasize48 > ATA_MAX_28BIT_LBA)
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adp->total_secs = lbasize48;
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/* init device parameters */
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ad_init(dev);
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/* announce we are here */
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ad_describe(dev);
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/* create the disk device */
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adp->disk = disk_alloc();
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adp->disk->d_strategy = ad_strategy;
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adp->disk->d_dump = ad_dump;
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adp->disk->d_name = "ad";
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adp->disk->d_drv1 = dev;
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if (ch->dma)
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adp->disk->d_maxsize = ch->dma->max_iosize;
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else
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adp->disk->d_maxsize = DFLTPHYS;
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adp->disk->d_sectorsize = DEV_BSIZE;
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adp->disk->d_mediasize = DEV_BSIZE * (off_t)adp->total_secs;
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adp->disk->d_fwsectors = adp->sectors;
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adp->disk->d_fwheads = adp->heads;
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adp->disk->d_unit = device_get_unit(dev);
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disk_create(adp->disk, DISK_VERSION);
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device_add_child(dev, "subdisk", device_get_unit(dev));
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bus_generic_attach(dev);
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return 0;
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}
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static int
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ad_detach(device_t dev)
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{
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struct ata_channel *ch = device_get_softc(device_get_parent(dev));
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struct ata_device *atadev = device_get_softc(dev);
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struct ad_softc *adp = device_get_ivars(dev);
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device_t *children;
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int nchildren, i;
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/* check that we have a valid disk to detach */
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if (!device_get_ivars(dev))
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return ENXIO;
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/* detach & delete all children */
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if (!device_get_children(dev, &children, &nchildren)) {
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for (i = 0; i < nchildren; i++)
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if (children[i])
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device_delete_child(dev, children[i]);
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free(children, M_TEMP);
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}
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/* detroy disk from the system so we dont get any further requests */
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disk_destroy(adp->disk);
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/* fail requests on the queue and any thats "in flight" for this device */
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ata_fail_requests(ch, dev);
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/* dont leave anything behind */
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device_set_ivars(dev, NULL);
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free(adp, M_AD);
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device_set_softc(dev, NULL);
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free(atadev, M_ATA);
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return 0;
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}
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static void
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ad_shutdown(device_t dev)
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{
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struct ata_device *atadev = device_get_softc(dev);
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if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
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ata_controlcmd(atadev, ATA_FLUSHCACHE, 0, 0, 0);
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}
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static int
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ad_reinit(device_t dev)
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{
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struct ata_channel *ch = device_get_softc(device_get_parent(dev));
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struct ata_device *atadev = device_get_softc(dev);
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/* if detach pending flag set, return error */
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if (((atadev->unit == ATA_MASTER) && !(ch->devices & ATA_ATA_MASTER)) ||
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((atadev->unit == ATA_SLAVE) && !(ch->devices & ATA_ATA_SLAVE))) {
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return 1;
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}
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ad_init(dev);
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return 0;
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}
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static void
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ad_strategy(struct bio *bp)
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{
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device_t dev = bp->bio_disk->d_drv1;
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struct ata_device *atadev = device_get_softc(dev);
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struct ata_request *request;
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if (!(request = ata_alloc_request())) {
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device_printf(dev, "FAILURE - out of memory in start\n");
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biofinish(bp, NULL, ENOMEM);
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return;
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}
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/* setup request */
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request->dev = dev;
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request->bio = bp;
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request->callback = ad_done;
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request->timeout = 5;
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request->retries = 2;
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request->data = bp->bio_data;
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request->bytecount = bp->bio_bcount;
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request->u.ata.lba = bp->bio_pblkno;
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request->u.ata.count = request->bytecount / DEV_BSIZE;
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request->transfersize = min(bp->bio_bcount, atadev->max_iosize);
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switch (bp->bio_cmd) {
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case BIO_READ:
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request->flags = ATA_R_READ;
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if (atadev->mode >= ATA_DMA) {
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request->u.ata.command = ATA_READ_DMA;
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request->flags |= ATA_R_DMA;
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}
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else if (atadev->max_iosize > DEV_BSIZE)
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request->u.ata.command = ATA_READ_MUL;
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else
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request->u.ata.command = ATA_READ;
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break;
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case BIO_WRITE:
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request->flags = ATA_R_WRITE;
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if (atadev->mode >= ATA_DMA) {
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request->u.ata.command = ATA_WRITE_DMA;
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request->flags |= ATA_R_DMA;
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}
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else if (atadev->max_iosize > DEV_BSIZE)
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request->u.ata.command = ATA_WRITE_MUL;
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else
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request->u.ata.command = ATA_WRITE;
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break;
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default:
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device_printf(dev, "FAILURE - unknown BIO operation\n");
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ata_free_request(request);
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biofinish(bp, NULL, EIO);
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return;
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}
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request->flags |= ATA_R_ORDERED;
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ata_queue_request(request);
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}
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static void
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ad_done(struct ata_request *request)
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{
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struct bio *bp = request->bio;
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/* finish up transfer */
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if ((bp->bio_error = request->result))
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bp->bio_flags |= BIO_ERROR;
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bp->bio_resid = bp->bio_bcount - request->donecount;
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biodone(bp);
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ata_free_request(request);
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}
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static int
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ad_dump(void *arg, void *virtual, vm_offset_t physical,
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off_t offset, size_t length)
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{
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struct disk *dp = arg;
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device_t dev = dp->d_drv1;
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struct ata_device *atadev = device_get_softc(dev);
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struct ad_softc *adp = device_get_ivars(dev);
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struct ata_channel *ch = device_get_softc(device_get_parent(dev));
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struct ata_request request;
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if (!adp)
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return ENXIO;
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bzero(&request, sizeof(struct ata_request));
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request.dev = dev;
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if (length) {
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request.data = virtual;
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request.bytecount = length;
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request.transfersize = min(length, atadev->max_iosize);
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request.flags = ATA_R_WRITE;
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if (atadev->max_iosize > DEV_BSIZE)
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request.u.ata.command = ATA_WRITE_MUL;
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else
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request.u.ata.command = ATA_WRITE;
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request.u.ata.lba = offset / DEV_BSIZE;
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request.u.ata.count = request.bytecount / DEV_BSIZE;
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}
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else {
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request.u.ata.command = ATA_FLUSHCACHE;
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request.flags = ATA_R_CONTROL;
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}
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if (ch->hw.begin_transaction(&request) == ATA_OP_CONTINUES) {
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do {
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DELAY(20);
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} while (ch->hw.end_transaction(&request) == ATA_OP_CONTINUES);
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ata_finish(&request);
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}
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if (request.status & ATA_S_ERROR)
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return EIO;
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return 0;
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}
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static void
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ad_init(device_t dev)
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{
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struct ata_device *atadev = device_get_softc(dev);
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ATA_SETMODE(GRANDPARENT(dev), dev);
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/* enable read caching */
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ata_controlcmd(atadev, ATA_SETFEATURES, ATA_SF_ENAB_RCACHE, 0, 0);
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/* enable write caching if enabled */
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if (ata_wc)
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ata_controlcmd(atadev, ATA_SETFEATURES, ATA_SF_ENAB_WCACHE, 0, 0);
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else
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ata_controlcmd(atadev, ATA_SETFEATURES, ATA_SF_DIS_WCACHE, 0, 0);
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/* use multiple sectors/interrupt if device supports it */
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if (ad_version(atadev->param.version_major)) {
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int secsperint = max(1, min(atadev->param.sectors_intr, 16));
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if (!ata_controlcmd(atadev, ATA_SET_MULTI, 0, 0, secsperint))
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atadev->max_iosize = secsperint * DEV_BSIZE;
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}
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else
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atadev->max_iosize = DEV_BSIZE;
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}
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void
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ad_describe(device_t dev)
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{
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struct ata_channel *ch = device_get_softc(device_get_parent(dev));
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struct ata_device *atadev = device_get_softc(dev);
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struct ad_softc *adp = device_get_ivars(dev);
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u_int8_t *marker, vendor[64], product[64];
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/* try to seperate the ATA model string into vendor and model parts */
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if ((marker = index(atadev->param.model, ' ')) ||
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(marker = index(atadev->param.model, '-'))) {
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int len = (marker - atadev->param.model);
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strncpy(vendor, atadev->param.model, len);
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vendor[len++] = 0;
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strcat(vendor, " ");
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strncpy(product, atadev->param.model + len, 40 - len);
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vendor[40 - len] = 0;
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}
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else {
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if (!strncmp(atadev->param.model, "ST", 2))
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strcpy(vendor, "Seagate ");
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else
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strcpy(vendor, "");
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strncpy(product, atadev->param.model, 40);
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}
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device_printf(dev, "%lluMB <%s%s %.8s> at ata%d-%s %s%s\n",
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(unsigned long long)(adp->total_secs / (1048576 / DEV_BSIZE)),
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vendor, product, atadev->param.revision,
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device_get_unit(ch->dev),
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(atadev->unit == ATA_MASTER) ? "master" : "slave",
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(adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
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ata_mode2str(atadev->mode));
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if (bootverbose) {
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device_printf(dev, "%llu sectors [%lldC/%dH/%dS] "
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"%d sectors/interrupt %d depth queue\n",
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(unsigned long long)adp->total_secs,
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(unsigned long long)(adp->total_secs /
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(adp->heads * adp->sectors)),
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adp->heads, adp->sectors, atadev->max_iosize / DEV_BSIZE,
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adp->num_tags + 1);
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}
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}
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static int
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ad_version(u_int16_t version)
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{
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int bit;
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if (version == 0xffff)
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return 0;
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for (bit = 15; bit >= 0; bit--)
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if (version & (1<<bit))
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return bit;
|
|
return 0;
|
|
}
|
|
|
|
static device_method_t ad_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_identify, ad_identify),
|
|
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),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t ad_driver = {
|
|
"ad",
|
|
ad_methods,
|
|
sizeof(struct ad_softc)
|
|
};
|
|
|
|
devclass_t ad_devclass;
|
|
|
|
static int
|
|
ad_modevent(module_t mod, int what, void *arg)
|
|
{
|
|
device_t *devs;
|
|
int ndevs, i;
|
|
|
|
if (what == MOD_UNLOAD) {
|
|
if (!devclass_get_devices(ad_devclass, &devs, &ndevs) && devs) {
|
|
for (i = 0; i < ndevs; i++)
|
|
device_delete_child(device_get_parent(devs[i]), devs[i]);
|
|
free(devs, M_TEMP);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
DRIVER_MODULE(ad, ata, ad_driver, ad_devclass, ad_modevent, NULL);
|
|
MODULE_VERSION(ad, 1);
|
|
MODULE_DEPEND(ad, ata, 1, 1, 1);
|