[src/netbsd-3]: src/sys/dev/ata Pull up revision 1.1 (requested by briggs in ...

[tron <tron%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b03e832e96e9
branches:  netbsd-3
changeset: 576471:b03e832e96e9
user:      tron <tron%NetBSD.org@localhost>
date:      Sun Jul 03 21:11:10 2005 +0000

description:
Pull up revision 1.1 (requested by briggs in ticket #521):
Basic support for RAID0 and RAID1 for the Adaptec HostRAID format as found
on the Intel 6300ESB on-board RAID.  Adapted from FreeBSD.

diffstat:

 sys/dev/ata/ata_raid_adaptec.c |  187 +++++++++++++++++++++++++++++++++++++++++
 1 files changed, 187 insertions(+), 0 deletions(-)

diffs (191 lines):

diff -r 33ca0db9cafd -r b03e832e96e9 sys/dev/ata/ata_raid_adaptec.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/ata/ata_raid_adaptec.c    Sun Jul 03 21:11:10 2005 +0000
@@ -0,0 +1,187 @@
+/*     $NetBSD: ata_raid_adaptec.c,v 1.1.2.2 2005/07/03 21:11:10 tron Exp $    */
+
+/*-
+ * Copyright (c) 2000,2001,2002 Søren Schmidt <sos%FreeBSD.org@localhost>
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 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 Adaptec ATA RAID controller configuration blocks.
+ *
+ * Adapted to NetBSD by Allen K. Briggs
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: ata_raid_adaptec.c,v 1.1.2.2 2005/07/03 21:11:10 tron 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 <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
+
+int
+ata_raid_read_config_adaptec(struct wd_softc *sc)
+{
+       struct adaptec_raid_conf *info;
+       struct atabus_softc *atabus;
+       struct vnode *vp;
+       int bmajor, error;
+       dev_t dev;
+       uint32_t gen, drive;
+       struct ataraid_array_info *aai;
+       struct ataraid_disk_info *adi;
+
+       info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK);
+
+       bmajor = devsw_name2blk(sc->sc_dev.dv_xname, NULL, 0);
+
+       /* Get a vnode for the raw partition of this disk. */
+       dev = MAKEDISKDEV(bmajor, sc->sc_dev.dv_unit, RAW_PART);
+       error = bdevvp(dev, &vp);
+       if (error)
+               goto out;
+
+       error = VOP_OPEN(vp, FREAD, NOCRED, 0);
+       if (error) {
+               vput(vp);
+               goto out;
+       }
+
+       error = ata_raid_config_block_rw(vp, ADP_LBA(sc), info,
+           sizeof(*info), B_READ);
+       vput(vp);
+       if (error) {
+               printf("%s: error %d reading Adaptec config block\n",
+                   sc->sc_dev.dv_xname, error);
+               goto out;
+       }
+
+       info->magic_0 = be32toh(info->magic_0);
+       info->magic_1 = be32toh(info->magic_1);
+       info->magic_2 = be32toh(info->magic_2);
+       info->magic_3 = be32toh(info->magic_3);
+       info->magic_4 = be32toh(info->magic_4);
+       /* Check the signature. */
+       if (info->magic_0 != ADP_MAGIC_0 || info->magic_3 != ADP_MAGIC_3) {
+               DPRINTF(("%s: Adaptec signature check failed\n",
+                   sc->sc_dev.dv_xname));
+               error = ESRCH;
+               goto out;
+       }
+
+       /*
+        * Lookup or allocate a new array info structure for
+        * this array.
+        */
+       aai = ata_raid_get_array_info(ATA_RAID_TYPE_ADAPTEC,
+               be32toh(info->configs[0].disk_number));
+
+       gen = be32toh(info->generation);
+
+       if (gen == 0 || gen > aai->aai_generation) {
+               aai->aai_generation = gen;
+
+               aai->aai_status = AAI_S_READY;
+
+               switch (info->configs[0].type) {
+               case ADP_T_RAID0:
+                       aai->aai_level = AAI_L_RAID0;
+                       aai->aai_interleave = 
+                           (be16toh(info->configs[0].stripe_sectors) >> 1);
+                       aai->aai_width = be16toh(info->configs[0].total_disks);
+                       break;
+
+               case ADP_T_RAID1:
+                       aai->aai_level = AAI_L_RAID1;
+                       aai->aai_interleave = 0;
+                       aai->aai_width = be16toh(info->configs[0].total_disks)
+                           / 2;
+                       break;
+
+               default:
+                       aprint_error("%s: unknown Adaptec RAID type 0x%02x\n",
+                           sc->sc_dev.dv_xname, info->configs[0].type);
+                       error = EINVAL;
+                       goto out;
+               }
+
+               aai->aai_type = ATA_RAID_TYPE_ADAPTEC;
+               aai->aai_ndisks = be16toh(info->configs[0].total_disks);
+               aai->aai_capacity = be32toh(info->configs[0].sectors);
+               aai->aai_heads = 255;
+               aai->aai_sectors = 63;
+               aai->aai_cylinders = aai->aai_capacity / (63 * 255);
+               aai->aai_offset = 0;
+               aai->aai_reserved = 17;
+
+               /* XXX - bogus.  RAID1 shouldn't really have an interleave */
+               if (aai->aai_interleave == 0)
+                       aai->aai_interleave = aai->aai_capacity;
+       }
+
+       atabus = (struct atabus_softc *) sc->sc_dev.dv_parent;
+       drive = atabus->sc_chan->ch_channel;
+       if (drive >= aai->aai_ndisks) {
+               aprint_error("%s: drive number %d doesn't make sense within "
+                   "%d-disk array\n",
+                   sc->sc_dev.dv_xname, drive, aai->aai_ndisks);
+               error = EINVAL;
+               goto out;
+       }
+
+       adi = &aai->aai_disks[drive];
+       adi->adi_dev = &sc->sc_dev;
+       adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED;
+       adi->adi_sectors = aai->aai_capacity;
+       adi->adi_compsize = be32toh(info->configs[drive+1].sectors);
+
+       error = 0;
+
+ out:
+       free(info, M_DEVBUF);
+       return (error);
+}