NetBSD-5.0.2/sys/dev/ata/ata_raid_nvidia.c
/* $NetBSD: ata_raid_nvidia.c,v 1.1 2008/08/20 15:00:34 tacha Exp $ */
/*-
* Copyright (c) 2000 - 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.
*/
/*
* Support for parsing nVIDIA MediaShield RAID controller configuration blocks.
*
* Adapted to NetBSD by Tatoku Ogaito (tacha@NetBSD.org)
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ata_raid_nvidia.c,v 1.1 2008/08/20 15:00:34 tacha Exp $");
#include <sys/param.h>
#include <sys/buf.h>
#include <sys/bufq.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/disk.h>
#include <sys/disklabel.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/vnode.h>
#include <sys/kauth.h>
#include <miscfs/specfs/specdev.h>
#include <dev/ata/atareg.h>
#include <dev/ata/atavar.h>
#include <dev/ata/wdvar.h>
#include <dev/ata/ata_raidreg.h>
#include <dev/ata/ata_raidvar.h>
#ifdef ATA_RAID_DEBUG
#define DPRINTF(x) printf x
#else
#define DPRINTF(x) /* nothing */
#endif
#ifdef ATA_RAID_DEBUG
static const char *
ata_raid_nvidia_type(int type)
{
static char buffer[16];
switch (type) {
case NV_T_SPAN: return "SPAN";
case NV_T_RAID0: return "RAID0";
case NV_T_RAID1: return "RAID1";
case NV_T_RAID3: return "RAID3";
case NV_T_RAID5: return "RAID5";
case NV_T_RAID01: return "RAID0+1";
default:
sprintf(buffer, "UNKNOWN 0x%02x", type);
return buffer;
}
}
static void
ata_raid_nvidia_print_info(struct nvidia_raid_conf *info)
{
printf("******** ATA nVidia MediaShield Metadata ********\n");
printf("nvidia_id <%.8s>\n", info->nvidia_id);
printf("config_size %d\n", info->config_size);
printf("checksum 0x%08x\n", info->checksum);
printf("version 0x%04x\n", info->version);
printf("disk_number %d\n", info->disk_number);
printf("dummy_0 0x%02x\n", info->dummy_0);
printf("total_sectors %d\n", info->total_sectors);
printf("sectors_size %d\n", info->sector_size);
printf("serial %.16s\n", info->serial);
printf("revision %.4s\n", info->revision);
printf("dummy_1 0x%08x\n", info->dummy_1);
printf("magic_0 0x%08x\n", info->magic_0);
printf("magic_1 0x%016jx\n", info->magic_1);
printf("magic_2 0x%016jx\n", info->magic_2);
printf("flags 0x%02x\n", info->flags);
printf("array_width %d\n", info->array_width);
printf("total_disks %d\n", info->total_disks);
printf("dummy_2 0x%02x\n", info->dummy_2);
printf("type %s\n", ata_raid_nvidia_type(info->type));
printf("dummy_3 0x%04x\n", info->dummy_3);
printf("stripe_sectors %d\n", info->stripe_sectors);
printf("stripe_bytes %d\n", info->stripe_bytes);
printf("stripe_shift %d\n", info->stripe_shift);
printf("stripe_mask 0x%08x\n", info->stripe_mask);
printf("stripe_sizesectors %d\n", info->stripe_sizesectors);
printf("stripe_sizebytes %d\n", info->stripe_sizebytes);
printf("rebuild_lba %d\n", info->rebuild_lba);
printf("dummy_4 0x%08x\n", info->dummy_4);
printf("dummy_5 0x%08x\n", info->dummy_5);
printf("status 0x%08x\n", info->status);
printf("=================================================\n");
}
#endif
int
ata_raid_read_config_nvidia(struct wd_softc *sc)
{
struct nvidia_raid_conf *info;
struct vnode *vp;
int bmajor, error, count;
dev_t dev;
uint32_t cksum, *ckptr;
struct ataraid_array_info *aai;
struct ataraid_disk_info *adi;
static struct _arrayno {
uint64_t magic1;
uint64_t magic2;
struct _arrayno *next;
} arrayno = { 0, 0, NULL}, *anptr;
info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK);
bmajor = devsw_name2blk(device_xname(sc->sc_dev), NULL, 0);
/* Get a vnode for the raw partition of this disk. */
dev = MAKEDISKDEV(bmajor, device_unit(sc->sc_dev), RAW_PART);
error = bdevvp(dev, &vp);
if (error)
goto out;
error = VOP_OPEN(vp, FREAD, NOCRED);
if (error) {
vput(vp);
goto out;
}
error = ata_raid_config_block_rw(vp, NVIDIA_LBA(sc), info,
sizeof(*info), B_READ);
VOP_CLOSE(vp, FREAD, NOCRED);
vput(vp);
if (error) {
aprint_error_dev(sc->sc_dev,
"error %d reading nVidia MediaShield config block\n", error);
goto out;
}
#ifdef ATA_RAID_DEBUG
ata_raid_nvidia_print_info(info);
#endif
/* Check the signature. */
if (strncmp(info->nvidia_id, NV_MAGIC, strlen(NV_MAGIC)) != 0) {
DPRINTF(("%s: nVidia signature check failed\n",
device_xname(sc->sc_dev)));
error = ESRCH;
goto out;
}
/* check if the checksum is OK */
for (cksum = 0, ckptr = (uint32_t *)info, count = 0; count < info->config_size;
count++)
cksum += *ckptr++;
if (cksum) {
DPRINTF(("%s: nVidia checksum failed (0x%02x)\n",
device_xname(sc->sc_dev), cksum));
error = ESRCH;
goto out;
}
/*
* Lookup or allocate a new array info structure for
* this array. Since nVidia raid information does not
* provides array# directory, we must count the number.
* The available traces are magic_1 and magic_2.
*/
for (anptr = &arrayno, count = 0; anptr->next; anptr = anptr->next, count++) {
if (anptr->magic1 == info->magic_1 &&
anptr->magic2 == info->magic_2)
break;
}
if (anptr->next == NULL) {
/* new array */
anptr->magic1 = info->magic_1;
anptr->magic2 = info->magic_2;
anptr->next = malloc(sizeof(arrayno), M_DEVBUF, M_WAITOK);
}
aai = ata_raid_get_array_info(ATA_RAID_TYPE_NVIDIA, count);
aai->aai_status = AAI_S_READY;
if (info->status & NV_S_DEGRADED)
aai->aai_status |= AAI_S_DEGRADED;
switch (info->type) {
case NV_T_RAID0:
aai->aai_level = AAI_L_RAID0;
break;
case NV_T_RAID1:
aai->aai_level = AAI_L_RAID1;
break;
case NV_T_RAID5:
aai->aai_level = AAI_L_RAID5;
break;
case NV_T_RAID01:
aai->aai_level = AAI_L_RAID0 | AAI_L_RAID1;
break;
case NV_T_SPAN:
aai->aai_level = AAI_L_SPAN;
break;
default:
aprint_error_dev(sc->sc_dev,
"unknown nVidia type 0x%02x\n", info->type);
error = EINVAL;
goto out;
}
aai->aai_type = ATA_RAID_TYPE_NVIDIA;
aai->aai_interleave = info->stripe_sectors;
aai->aai_width = info->array_width;
aai->aai_ndisks = info->total_disks;
aai->aai_capacity = info->total_sectors;
aai->aai_heads = 255;
aai->aai_sectors = 63;
aai->aai_cylinders = aai->aai_capacity / (aai->aai_heads * aai->aai_sectors);
aai->aai_offset = 0;
aai->aai_reserved = 2;
adi = &aai->aai_disks[info->disk_number];
adi->adi_dev = sc->sc_dev;
adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED;
adi->adi_sectors = aai->aai_capacity;
adi->adi_compsize = aai->aai_capacity / info->array_width;
error = 0;
out:
free(info, M_DEVBUF);
return (error);
}