262 lines
8.0 KiB
C
262 lines
8.0 KiB
C
/* $NetBSD: ata_raid_nvidia.c,v 1.4 2018/10/22 19:38:06 jdolecek Exp $ */
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/*-
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* Copyright (c) 2000 - 2008 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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*
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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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/*
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* Support for parsing nVIDIA MediaShield RAID controller configuration blocks.
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*
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* Adapted to NetBSD by Tatoku Ogaito (tacha@NetBSD.org)
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ata_raid_nvidia.c,v 1.4 2018/10/22 19:38:06 jdolecek Exp $");
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#include <sys/param.h>
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#include <sys/buf.h>
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#include <sys/bufq.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/disk.h>
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#include <sys/disklabel.h>
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#include <sys/fcntl.h>
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#include <sys/vnode.h>
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#include <sys/kauth.h>
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#include <miscfs/specfs/specdev.h>
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#include <dev/ata/atareg.h>
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#include <dev/ata/atavar.h>
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#include <dev/ata/wdvar.h>
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#include <dev/ata/ata_raidreg.h>
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#include <dev/ata/ata_raidvar.h>
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#ifdef ATA_RAID_DEBUG
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#define DPRINTF(x) printf x
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#else
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#define DPRINTF(x) /* nothing */
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#endif
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#ifdef ATA_RAID_DEBUG
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static const char *
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ata_raid_nvidia_type(int type)
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{
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static char buffer[16];
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switch (type) {
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case NV_T_SPAN: return "SPAN";
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case NV_T_RAID0: return "RAID0";
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case NV_T_RAID1: return "RAID1";
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case NV_T_RAID3: return "RAID3";
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case NV_T_RAID5: return "RAID5";
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case NV_T_RAID01: return "RAID0+1";
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default:
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snprintf(buffer, sizeof(buffer), "UNKNOWN 0x%02x", type);
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return buffer;
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}
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}
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static void
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ata_raid_nvidia_print_info(struct nvidia_raid_conf *info)
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{
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printf("******** ATA nVidia MediaShield Metadata ********\n");
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printf("nvidia_id <%.8s>\n", info->nvidia_id);
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printf("config_size %d\n", info->config_size);
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printf("checksum 0x%08x\n", info->checksum);
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printf("version 0x%04x\n", info->version);
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printf("disk_number %d\n", info->disk_number);
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printf("dummy_0 0x%02x\n", info->dummy_0);
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printf("total_sectors %d\n", info->total_sectors);
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printf("sectors_size %d\n", info->sector_size);
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printf("serial %.16s\n", info->serial);
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printf("revision %.4s\n", info->revision);
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printf("dummy_1 0x%08x\n", info->dummy_1);
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printf("magic_0 0x%08x\n", info->magic_0);
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printf("magic_1 0x%016jx\n", info->magic_1);
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printf("magic_2 0x%016jx\n", info->magic_2);
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printf("flags 0x%02x\n", info->flags);
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printf("array_width %d\n", info->array_width);
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printf("total_disks %d\n", info->total_disks);
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printf("dummy_2 0x%02x\n", info->dummy_2);
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printf("type %s\n", ata_raid_nvidia_type(info->type));
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printf("dummy_3 0x%04x\n", info->dummy_3);
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printf("stripe_sectors %d\n", info->stripe_sectors);
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printf("stripe_bytes %d\n", info->stripe_bytes);
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printf("stripe_shift %d\n", info->stripe_shift);
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printf("stripe_mask 0x%08x\n", info->stripe_mask);
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printf("stripe_sizesectors %d\n", info->stripe_sizesectors);
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printf("stripe_sizebytes %d\n", info->stripe_sizebytes);
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printf("rebuild_lba %d\n", info->rebuild_lba);
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printf("dummy_4 0x%08x\n", info->dummy_4);
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printf("dummy_5 0x%08x\n", info->dummy_5);
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printf("status 0x%08x\n", info->status);
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printf("=================================================\n");
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}
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#endif
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int
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ata_raid_read_config_nvidia(struct wd_softc *sc)
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{
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struct dk_softc *dksc = &sc->sc_dksc;
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struct nvidia_raid_conf *info;
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struct vnode *vp;
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int bmajor, error, count;
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dev_t dev;
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uint32_t cksum, *ckptr;
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struct ataraid_array_info *aai;
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struct ataraid_disk_info *adi;
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static struct _arrayno {
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uint64_t magic1;
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uint64_t magic2;
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struct _arrayno *next;
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} arrayno = { 0, 0, NULL}, *anptr;
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info = kmem_zalloc(sizeof(*info), KM_SLEEP);
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bmajor = devsw_name2blk(dksc->sc_xname, NULL, 0);
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/* Get a vnode for the raw partition of this disk. */
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dev = MAKEDISKDEV(bmajor, device_unit(dksc->sc_dev), RAW_PART);
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error = bdevvp(dev, &vp);
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if (error)
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goto out;
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error = VOP_OPEN(vp, FREAD, NOCRED);
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if (error) {
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vput(vp);
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goto out;
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}
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error = ata_raid_config_block_rw(vp, NVIDIA_LBA(sc), info,
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sizeof(*info), B_READ);
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VOP_CLOSE(vp, FREAD, NOCRED);
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vput(vp);
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if (error) {
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aprint_error_dev(dksc->sc_dev,
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"error %d reading nVidia MediaShield config block\n", error);
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goto out;
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}
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#ifdef ATA_RAID_DEBUG
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ata_raid_nvidia_print_info(info);
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#endif
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/* Check the signature. */
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if (strncmp(info->nvidia_id, NV_MAGIC, strlen(NV_MAGIC)) != 0) {
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DPRINTF(("%s: nVidia signature check failed\n",
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dksc->sc_xname));
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error = ESRCH;
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goto out;
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}
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/* check if the checksum is OK */
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for (cksum = 0, ckptr = (uint32_t *)info, count = 0; count < info->config_size;
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count++)
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cksum += *ckptr++;
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if (cksum) {
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DPRINTF(("%s: nVidia checksum failed (0x%02x)\n",
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dksc->sc_xname, cksum));
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error = ESRCH;
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goto out;
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}
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/*
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* Lookup or allocate a new array info structure for
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* this array. Since nVidia raid information does not
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* provides array# directory, we must count the number.
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* The available traces are magic_1 and magic_2.
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*/
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for (anptr = &arrayno, count = 0; anptr->next; anptr = anptr->next, count++) {
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if (anptr->magic1 == info->magic_1 &&
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anptr->magic2 == info->magic_2)
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break;
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}
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if (anptr->next == NULL) {
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/* new array */
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anptr->magic1 = info->magic_1;
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anptr->magic2 = info->magic_2;
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anptr->next = kmem_zalloc(sizeof(arrayno), KM_SLEEP);
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}
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aai = ata_raid_get_array_info(ATA_RAID_TYPE_NVIDIA, count);
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aai->aai_status = AAI_S_READY;
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if (info->status & NV_S_DEGRADED)
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aai->aai_status |= AAI_S_DEGRADED;
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switch (info->type) {
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case NV_T_RAID0:
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aai->aai_level = AAI_L_RAID0;
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break;
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case NV_T_RAID1:
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aai->aai_level = AAI_L_RAID1;
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break;
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case NV_T_RAID5:
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aai->aai_level = AAI_L_RAID5;
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break;
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case NV_T_RAID01:
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aai->aai_level = AAI_L_RAID0 | AAI_L_RAID1;
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break;
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case NV_T_SPAN:
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aai->aai_level = AAI_L_SPAN;
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break;
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default:
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aprint_error_dev(dksc->sc_dev,
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"unknown nVidia type 0x%02x\n", info->type);
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error = EINVAL;
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goto out;
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}
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aai->aai_type = ATA_RAID_TYPE_NVIDIA;
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aai->aai_interleave = info->stripe_sectors;
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aai->aai_width = info->array_width;
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aai->aai_ndisks = info->total_disks;
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aai->aai_capacity = info->total_sectors;
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aai->aai_heads = 255;
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aai->aai_sectors = 63;
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aai->aai_cylinders = aai->aai_capacity / (aai->aai_heads * aai->aai_sectors);
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aai->aai_offset = 0;
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aai->aai_reserved = 2;
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adi = &aai->aai_disks[info->disk_number];
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adi->adi_dev = dksc->sc_dev;
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adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED;
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adi->adi_sectors = aai->aai_capacity;
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adi->adi_compsize = aai->aai_capacity / info->array_width;
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error = 0;
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out:
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kmem_free(info, sizeof(*info));
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return (error);
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}
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