Major update of the ATA RAID code, part 2:

More cleanups of the RAID1 failure mode code.

Add functionality that writes the changed RAID config setup
back to the disks (in controller BIOS specific format), so
that a reboot will make the BIOS pick up the changed config.

1 files changed, 398 insertions, 127 deletions

diff --git a/sys/dev/ata/ata-raid.c b/sys/dev/ata/ata-raid.c
index 3aa7fd04be79..b6bf07ed4247 100644
--- a/sys/dev/ata/ata-raid.c
+++ b/sys/dev/ata/ata-raid.c
@@ -69,24 +69,30 @@ static struct cdevsw ardisk_cdevsw;
 
 /* prototypes */
 static void ar_done(struct bio *);
+static void ar_config_changed(struct ar_softc *, int);
 static int ar_highpoint_read_conf(struct ad_softc *, struct ar_softc **);
+static int ar_highpoint_write_conf(struct ar_softc *);
 static int ar_promise_read_conf(struct ad_softc *, struct ar_softc **);
+static int ar_promise_write_conf(struct ar_softc *);
 static int ar_read(struct ad_softc *, u_int32_t, int, u_int8_t *);
+static int ar_write(struct ad_softc *, u_int32_t, int, u_int8_t *);
 
 /* misc defines */
 #define AD_STRATEGY(x)	si_disk->d_devsw->d_strategy(x)
 #define AD_SOFTC(x)	((struct ad_softc *)(x.device->driver))
   
 /* internal vars */
-static int ar_init = 0;
-static struct ar_softc *ar_table[MAX_ARRAYS];
+static struct ar_softc **ar_table = NULL;
 static MALLOC_DEFINE(M_AR, "AR driver", "ATA RAID driver");
 
 int
-ar_probe(struct ad_softc *adp) {
-    if (!ar_init) {
-	bzero(&ar_table, sizeof(ar_table));
-	ar_init = 1;
+ata_raid_probe(struct ad_softc *adp) {
+    if (!ar_table)
+	ar_table = malloc(sizeof(struct ar_soft *) * MAX_ARRAYS,
+			  M_AR, M_NOWAIT | M_ZERO);
+    if (!ar_table) {
+	ata_prtdev(adp->device, "no memory for ATA raid array\n");
+	return 1;
     }
 
     switch(adp->device->channel->chiptype) {
@@ -96,65 +102,56 @@ ar_probe(struct ad_softc *adp) {
     case 0x0d30105a:
     case 0x4d68105a:
     case 0x6268105a:
-	/* test RAID bit in PCI reg */
+	/* test RAID bit in PCI reg XXX */
 	return (ar_promise_read_conf(adp, ar_table));
 
     case 0x00041103:
-	/* test RAID bit in PCI reg */
+    case 0x00081103:
 	return (ar_highpoint_read_conf(adp, ar_table));
     }
     return 1;
 }
 
 void
-atar_attach()
+ata_raid_attach()
 {
     struct ar_softc *raid;
     dev_t dev;
     int array, disk;
 
     for (array = 0; array < MAX_ARRAYS; array++) {
-	if (!(raid = ar_table[array]) || !raid->flags) {
+	if (!(raid = ar_table[array]) || !raid->flags)
 	    continue;
-	}
    
 	for (disk = 0; disk < raid->total_disks; disk++) {
-	    if (raid->disks[disk].device) {
-		switch (raid->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
-		case AR_F_SPAN:
-		case AR_F_RAID0:
-		    if (raid->disks[disk].flags & AR_DF_ONLINE)
-			ata_drawerleds(raid->disks[disk].device, ATA_LED_GREEN);
-		    else {
-			raid->flags &= ~AR_F_READY;
-			ata_drawerleds(raid->disks[disk].device, ATA_LED_RED);
-		    }
-		    break;
+	    switch (raid->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
+	    case AR_F_SPAN:
+	    case AR_F_RAID0:
+		if (!(raid->disks[disk].flags & AR_DF_ONLINE))
+		    raid->flags &= ~AR_F_READY;
+		break;
 
-		case AR_F_RAID1:
-		case AR_F_RAID0 | AR_F_RAID1:
-		    if (disk < raid->width) {
-			if (!(raid->disks[disk].flags & AR_DF_ONLINE) &&
-			    !(raid->disks[disk+raid->width].flags&AR_DF_ONLINE))
-			    raid->flags &= ~AR_F_READY;
-			else if (((raid->disks[disk].flags & AR_DF_ONLINE) &&
-				 !(raid->disks
-				   [disk + raid->width].flags & AR_DF_ONLINE))||
-				 (!(raid->disks[disk].flags & AR_DF_ONLINE) &&
-				 (raid->disks
-				   [disk + raid->width].flags & AR_DF_ONLINE)))
-			    raid->flags |= AR_F_DEGRADED;
-		    }
-		    if (raid->disks[disk].flags & AR_DF_ONLINE)
-			ata_drawerleds(raid->disks[disk].device, ATA_LED_GREEN);
-		    else
-			ata_drawerleds(raid->disks[disk].device, ATA_LED_RED);
-		    break;
+	    case AR_F_RAID1:
+	    case AR_F_RAID0 | AR_F_RAID1:
+		if (disk < raid->width) {
+		    if (!(raid->disks[disk].flags & AR_DF_ONLINE) &&
+			!(raid->disks[disk+raid->width].flags&AR_DF_ONLINE))
+			raid->flags &= ~AR_F_READY;
+		    else if (((raid->disks[disk].flags & AR_DF_ONLINE) &&
+			      !(raid->disks
+				[disk + raid->width].flags & AR_DF_ONLINE))||
+			     (!(raid->disks[disk].flags & AR_DF_ONLINE) &&
+			      (raid->disks
+				[disk + raid->width].flags & AR_DF_ONLINE)))
+			raid->flags |= AR_F_DEGRADED;
 		}
+		break;
 	    }
-	    else {
-		raid->disks[disk].flags &=
-		    ~(AR_DF_PRESENT | AR_DF_ASSIGNED | AR_DF_ONLINE);
+	    if (raid->disks[disk].device) {
+		if (raid->disks[disk].flags & AR_DF_ONLINE)
+		    ata_drawerleds(raid->disks[disk].device, ATA_LED_GREEN);
+		else
+		    ata_drawerleds(raid->disks[disk].device, ATA_LED_RED);
 	    }
 	}
 
@@ -175,7 +172,7 @@ atar_attach()
 	case (AR_F_RAID0 | AR_F_RAID1):
 	    printf("RAID0+1 "); break;
 	default:
-	    printf("unknown 0x%x ", raid->flags);
+	    printf("unknown 0x%x> ", raid->flags);
 	    return;
 	}
 	printf("array> [%d/%d/%d] status: ",
@@ -202,7 +199,7 @@ atar_attach()
 	    else if (raid->disks[disk].flags & AR_DF_PRESENT)
 		printf(" %d FREE  ", disk);
 	    else
-		printf(" %d FAILURE no device present\n", disk);
+		printf(" %d INVALID no RAID config info on this disk\n", disk);
 	    if (raid->disks[disk].flags & AR_DF_PRESENT)
 		ad_print(AD_SOFTC(raid->disks[disk]), "");
 	}
@@ -288,7 +285,7 @@ arstrategy(struct bio *bp)
 	    break;
 
 	default:
-	    printf("Oops! unknown array type in arstrategy\n");
+	    printf("ar%d: unknown array type in arstrategy\n", rdp->lun);
 	    bp->bio_flags |= BIO_ERROR;
 	    bp->bio_error = EIO;
 	    biodone(bp);
@@ -297,7 +294,6 @@ arstrategy(struct bio *bp)
 
 	if (buf1->drive > 0)
 	    buf1->bp.bio_pblkno += rdp->offset;
-
 	buf1->bp.bio_caller1 = (void *)rdp;
 	buf1->bp.bio_bcount = chunk * DEV_BSIZE;
 	buf1->bp.bio_data = data;
@@ -310,10 +306,10 @@ arstrategy(struct bio *bp)
 	case AR_F_SPAN:
 	case AR_F_RAID0:
 	    if (!AD_SOFTC(rdp->disks[buf1->drive])->dev->si_disk) {
-		rdp->disks[buf1->drive].flags = ~(AR_DF_PRESENT | AR_DF_ONLINE);
-		ata_drawerleds(rdp->disks[buf1->drive].device, ATA_LED_RED);
+		rdp->disks[buf1->drive].flags &= ~AR_DF_ONLINE;
 		rdp->flags &= ~AR_F_READY;
 		printf("ar%d: ERROR broken array in strategy\n", rdp->lun);
+		ar_config_changed(rdp, buf1->drive);
 		bp->bio_flags |= BIO_ERROR;
 		bp->bio_error = EIO;
 		biodone(bp);
@@ -335,27 +331,25 @@ arstrategy(struct bio *bp)
 	    }
 	    if (rdp->disks[buf1->drive].flags & AR_DF_ONLINE &&
 		!AD_SOFTC(rdp->disks[buf1->drive])->dev->si_disk) {
-		rdp->disks[buf1->drive].flags = ~(AR_DF_PRESENT | AR_DF_ONLINE);
-		ata_drawerleds(rdp->disks[buf1->drive].device, ATA_LED_RED);
+		rdp->disks[buf1->drive].flags &= ~AR_DF_ONLINE;
 		if (rdp->disks[buf1->drive + rdp->width].flags & AR_DF_ONLINE) {
 		    rdp->flags |= AR_F_DEGRADED;
 		    printf("ar%d: WARNING mirror lost in strategy\n", rdp->lun);
 		}
 		else 
 		    rdp->flags &= ~AR_F_READY;
+		ar_config_changed(rdp, buf1->drive);
 	    }
 	    if (rdp->disks[buf1->drive + rdp->width].flags & AR_DF_ONLINE &&
 		!AD_SOFTC(rdp->disks[buf1->drive + rdp->width])->dev->si_disk) {
-		rdp->disks[buf1->drive + rdp->width].flags = 
-		    ~(AR_DF_PRESENT | AR_DF_ONLINE);
-		ata_drawerleds(rdp->disks[buf1->drive + rdp->width].device,
-			       ATA_LED_RED);
+		rdp->disks[buf1->drive + rdp->width].flags &= ~AR_DF_ONLINE;
 		if (rdp->disks[buf1->drive].flags & AR_DF_ONLINE) {
 		    rdp->flags |= AR_F_DEGRADED;
 		    printf("ar%d: WARNING mirror lost in strategy\n", rdp->lun);
 		}
 		else
 		    rdp->flags &= ~AR_F_READY;
+		ar_config_changed(rdp, buf1->drive);
 	    }
 	    if (!(rdp->flags & AR_F_READY)) {
 		printf("ar%d: ERROR broken array in strategy\n", rdp->lun);
@@ -396,7 +390,7 @@ arstrategy(struct bio *bp)
 	    rdp->disks[buf1->drive].last_lba = buf1->bp.bio_pblkno + chunk;
 	    break;
 	default:
-	    printf("DOH!! unknown array type in arstrategy\n");
+	    printf("ar%d: unknown array type in arstrategy\n", rdp->lun);
 	}
     }
 }
@@ -406,22 +400,19 @@ ar_done(struct bio *bp)
 {
     struct ar_softc *rdp = (struct ar_softc *)bp->bio_caller1;
     struct ar_buf *buf = (struct ar_buf *)bp;
-    int s;
-
-    s = splbio();
+    int s = splbio();
 
     switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
-
     case AR_F_SPAN:
     case AR_F_RAID0:
 	if (bp->bio_flags & BIO_ERROR) {
-	    printf("ar%d: ERROR broken array in done\n", rdp->lun);
-	    rdp->disks[buf->drive].flags = ~(AR_DF_PRESENT | AR_DF_ONLINE);
+	    rdp->disks[buf->drive].flags &= ~AR_DF_ONLINE;
 	    rdp->flags &= ~AR_F_READY;
+	    printf("ar%d: ERROR broken array in done\n", rdp->lun);
+	    ar_config_changed(rdp, buf->drive);
 	    buf->org->bio_flags |= BIO_ERROR;
 	    buf->org->bio_error = EIO;
 	    biodone(buf->org);
-	    ata_drawerleds(rdp->disks[buf->drive].device, ATA_LED_RED);
 	}
 	else {
 	    buf->org->bio_resid -= buf->bp.bio_bcount;
@@ -433,12 +424,14 @@ ar_done(struct bio *bp)
     case AR_F_RAID1:
     case AR_F_RAID0 | AR_F_RAID1:
 	if (bp->bio_flags & BIO_ERROR) {
-	    rdp->disks[buf->drive].flags = ~(AR_DF_PRESENT | AR_DF_ONLINE);
-	    ata_drawerleds(rdp->disks[buf->drive].device, ATA_LED_RED);
-	    if (rdp->flags & AR_F_DEGRADED &&
-		!(rdp->disks[buf->mirror->drive].flags & AR_DF_ONLINE)) {
+	    rdp->disks[buf->drive].flags &= ~AR_DF_ONLINE;
+	    if ((rdp->flags & AR_F_DEGRADED) &&
+		!((buf->drive < rdp->width) ? 
+		  (rdp->disks[buf->drive + rdp->width].flags & AR_DF_ONLINE) :
+		  (rdp->disks[buf->drive - rdp->width].flags & AR_DF_ONLINE))) {
 		rdp->flags &= ~AR_F_READY;
 		printf("ar%d: ERROR broken array in done\n", rdp->lun);
+		ar_config_changed(rdp, buf->drive);
 		buf->org->bio_flags |= BIO_ERROR;
 		buf->org->bio_error = EIO;
 		biodone(buf->org);
@@ -446,6 +439,7 @@ ar_done(struct bio *bp)
 	    else {
 		rdp->flags |= AR_F_DEGRADED;
 		printf("ar%d: WARNING mirror lost in done\n", rdp->lun);
+		ar_config_changed(rdp, buf->drive);
 		if (bp->bio_cmd == BIO_READ) {
 		    if (buf->drive < rdp->width)
 			buf->drive = buf->drive + rdp->width;
@@ -483,13 +477,23 @@ ar_done(struct bio *bp)
 	break;
 	
     default:
-	printf("Oops! unknown array type in ar_done\n");
+	printf("ar%d: unknown array type in ar_done\n", rdp->lun);
     }
     free(buf, M_AR);
     splx(s);
 }
 
-/* read the RAID info from a disk on a HighPoint controller */
+static void
+ar_config_changed(struct ar_softc *rdp, int disk)
+{
+    if (rdp->flags & AR_F_PROMISE_RAID)
+	ar_promise_write_conf(rdp);
+    if (rdp->flags & AR_F_HIGHPOINT_RAID)
+	ar_highpoint_write_conf(rdp);
+    if (rdp->disks[disk].device && !(rdp->disks[disk].flags & AR_DF_ONLINE))
+	ata_drawerleds(rdp->disks[disk].device, ATA_LED_RED);
+}
+
 static int
 ar_highpoint_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
 {
@@ -504,14 +508,21 @@ ar_highpoint_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
     if (ar_read(adp, HPT_LBA, sizeof(struct highpoint_raid_conf),
 		(u_int8_t *)info)) {
 	if (bootverbose)
-	    printf("HighPoint read conf failed\n");
+	    printf("ar: HighPoint read conf failed\n");
 	goto highpoint_out;
     }
 
     /* check if this is a HighPoint RAID struct */
-    if (!(info->magic == HPT_MAGIC_OK || info->magic == HPT_MAGIC_BAD)) {
+    if (info->magic != HPT_MAGIC_OK && info->magic != HPT_MAGIC_BAD) {
 	if (bootverbose)
-	    printf("HighPoint check1 failed\n");
+	    printf("ar: HighPoint check1 failed\n");
+	goto highpoint_out;
+    }
+
+    /* is this disk defined, or an old leftover/spare ? */
+    if (!info->magic_0) {
+	if (bootverbose)
+	    printf("ar: HighPoint check2 failed\n");
 	goto highpoint_out;
     }
 
@@ -522,56 +533,80 @@ ar_highpoint_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
 		(struct ar_softc*)malloc(sizeof(struct ar_softc), M_AR,
 					 M_NOWAIT | M_ZERO);
 	    if (!raidp[array]) {
-		printf("ar: failed to allocate raid config storage\n");
+		printf("ar%d: failed to allocate raid config storage\n", array);
 		goto highpoint_out;
 	    }
 	}
 	raid = raidp[array];
 	if (raid->flags & AR_F_PROMISE_RAID)
 	    continue;
-	raid->flags = AR_F_HIGHPOINT_RAID;
+	raid->flags |= AR_F_HIGHPOINT_RAID;
 
 	switch (info->type) {
 	case HPT_T_RAID0:
+	case HPT_T_RAID01_RAID0:
 	    /* check the order byte to determine what this really is */
-	    switch (info->order & HPT_O_RAIDMASK) {
-	    case HPT_O_RAID0:
+	    switch (info->order) {
+	    case HPT_O_DOWN:
 		if (raid->magic_0 && raid->magic_0 != info->magic_0)
 		    continue;
 		raid->magic_0 = info->magic_0;
+		raid->magic_1 = info->magic_1;
 		raid->flags |= AR_F_RAID0;
 		raid->interleave = 1 << info->stripe_shift;
 		disk_number = info->disk_number;
+		info->magic = 0;	/* mark bad */
 		break;
 
-	    case HPT_O_RAID1:
+	    case HPT_O_RAID01DEGRADED:
 		if (raid->magic_0 && raid->magic_0 != info->magic_0)
 		    continue;
 		raid->magic_0 = info->magic_0;
-		raid->flags |= AR_F_RAID1;
-		disk_number = (info->disk_number > 0);
+		raid->magic_1 = info->magic_1;
+		raid->flags |= AR_F_RAID0;
+		raid->interleave = 1 << info->stripe_shift;
+		disk_number = info->disk_number;
 		break;
-	    
+
 	    case HPT_O_RAID01SRC:
-		if (raid->magic_0 && raid->magic_0 != info->magic_0)
+		if ((raid->magic_0 && raid->magic_0 != info->magic_0) ||
+		    (raid->magic_1 && raid->magic_1 != info->magic_1))
 		    continue;
 		raid->magic_0 = info->magic_0;
+		raid->magic_1 = info->magic_1;
 		raid->flags |= (AR_F_RAID0 | AR_F_RAID1);
 		raid->interleave = 1 << info->stripe_shift;
 		disk_number = info->disk_number;
 		break;
 
 	    case HPT_O_RAID01DST:
-		if (raid->magic_1 && raid->magic_1 != info->magic_0)
+		if (raid->magic_1 && raid->magic_1 != info->magic_1)
 		    continue;
-		raid->magic_1 = info->magic_0;
+		raid->magic_1 = info->magic_1;
 		raid->flags |= (AR_F_RAID0 | AR_F_RAID1);
 		raid->interleave = 1 << info->stripe_shift;
 		disk_number = info->disk_number + info->array_width;
 		break;
+
+	    case HPT_O_READY:
+		if (raid->magic_0 && raid->magic_0 != info->magic_0)
+		    continue;
+		raid->magic_0 = info->magic_0;
+		raid->flags |= AR_F_RAID0;
+		raid->interleave = 1 << info->stripe_shift;
+		disk_number = info->disk_number;
+		break;
 	    }
 	    break;
 
+	case HPT_T_RAID1:
+	    if (raid->magic_0 && raid->magic_0 != info->magic_0)
+		continue;
+	    raid->magic_0 = info->magic_0;
+	    raid->flags |= AR_F_RAID1;
+	    disk_number = (info->disk_number > 0);
+	    break;
+
 	case HPT_T_SPAN:
 	    if (raid->magic_0 && raid->magic_0 != info->magic_0)
 		continue;
@@ -581,28 +616,30 @@ ar_highpoint_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
 	    break;
 
 	default:
-	    printf("HighPoint unknown RAID type 0x%02x\n", info->type);
+	    printf("ar%d: HighPoint unknown RAID type 0x%02x\n",
+		   array, info->type);
 	    goto highpoint_out;
 	}
 
 	raid->disks[disk_number].device = adp->device;
+	raid->disks[disk_number].flags = (AR_DF_PRESENT | AR_DF_ASSIGNED);
 	if (info->magic == HPT_MAGIC_OK) {
-	    raid->disks[disk_number].flags |=
-		(AR_DF_PRESENT | AR_DF_ONLINE | AR_DF_ASSIGNED);
+	    raid->disks[disk_number].flags |= AR_DF_ONLINE;
 	    raid->flags |= AR_F_READY;
 	    raid->lun = array;
 	    raid->width = info->array_width;
 	    raid->heads = 255;
 	    raid->sectors = 63;
-	    raid->cylinders = (info->total_sectors - 9) / (63 * 255);
-	    raid->total_sectors = info->total_sectors - (9 * raid->width);
+	    raid->cylinders = (info->total_sectors - HPT_LBA) / (63 * 255);
+	    raid->total_sectors = info->total_sectors - (HPT_LBA * raid->width);
 	    raid->offset = 10;
 	    raid->reserved = 10;
 	}
-	else {
+	else
 	    raid->disks[disk_number].flags &= ~ AR_DF_ONLINE;
-	    raid->disks[disk_number].flags |= (AR_DF_PRESENT | AR_DF_ASSIGNED); 
-	}
+
+	if ((raid->flags & AR_F_RAID0) && (raid->total_disks < raid->width))
+	    raid->total_disks = raid->width;
 	if (disk_number >= raid->total_disks)
 	    raid->total_disks = disk_number + 1;
 	error = 0;
@@ -613,7 +650,96 @@ highpoint_out:
     return error;
 }
 
-/* read the RAID info from a disk on a Promise Fasttrak controller */
+static int
+ar_highpoint_write_conf(struct ar_softc *rdp)
+{
+    struct highpoint_raid_conf *config;
+    struct timeval timestamp;
+    int disk;
+
+    if (!(config = (struct highpoint_raid_conf *)
+	  malloc(sizeof(struct highpoint_raid_conf), M_AR, M_NOWAIT)))
+	return -1;
+
+    microtime(&timestamp);
+    rdp->magic_0 = timestamp.tv_sec + 1;
+    rdp->magic_1 = timestamp.tv_sec;
+   
+    for (disk = 0; disk < rdp->total_disks; disk++) {
+	bzero(config, sizeof(struct highpoint_raid_conf));
+	if ((rdp->disks[disk].flags & (AR_DF_PRESENT | AR_DF_ONLINE)) ==
+	    (AR_DF_PRESENT | AR_DF_ONLINE))
+	    config->magic = HPT_MAGIC_OK;
+	if (rdp->disks[disk].flags & AR_DF_ASSIGNED)
+	    config->magic_0 = rdp->magic_0;
+	config->disk_number = disk;
+
+	switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
+	case AR_F_RAID0:
+	    config->type = HPT_T_RAID0;
+	    if (rdp->disks[disk].flags & AR_DF_ONLINE)
+		config->order = HPT_O_READY;
+	    else
+		config->order = HPT_O_DOWN;
+	    break;
+
+	case AR_F_RAID1:
+	    config->type = HPT_T_RAID1;
+	    config->disk_number = (disk < rdp->width) ? disk : disk + 10;
+	    break;
+
+	case AR_F_RAID0 | AR_F_RAID1:
+	    config->magic_1 = rdp->magic_1;
+	    config->type = HPT_T_RAID01_RAID0;
+#if 0
+	    if ((rdp->flags & (AR_F_READY | AR_F_DEGRADED)) == AR_F_READY)
+		if (disk < rdp->width)
+		    config->order = HPT_O_RAID01SRC;
+		else
+		    config->order = HPT_O_RAID01DST;
+	    else 
+		if (rdp->disks[disk].flags & AR_DF_ONLINE)
+		    config->order = HPT_O_RAID01DEGRADED;
+		else
+		    config->order = HPT_O_DOWN;
+#else
+	    if (rdp->disks[disk].flags & AR_DF_ONLINE)
+		if (disk < rdp->width)
+		    config->order = HPT_O_RAID01SRC;
+		else
+		    config->order = HPT_O_RAID01DST;
+	    else 
+		config->order = HPT_O_DOWN;
+#endif
+	    if (disk >= rdp->width) {
+		config->magic_0 = rdp->magic_0 + 1;
+		config->disk_number -= rdp->width;
+	    }
+	    break;
+
+	case AR_F_SPAN:
+	    config->type = HPT_T_SPAN;
+	    break;
+	}
+
+	config->array_width = rdp->width;
+	config->stripe_shift = (rdp->width > 1) ? (ffs(rdp->interleave)-1) : 0;
+	config->total_sectors = rdp->total_sectors;
+
+	if (rdp->disks[disk].device && rdp->disks[disk].device->driver &&
+	    !(rdp->disks[disk].device->flags & ATA_D_DETACHING)) {
+	    if (ar_write(AD_SOFTC(rdp->disks[disk]), HPT_LBA,
+			 sizeof(struct highpoint_raid_conf),
+			 (u_int8_t *)config)) {
+		if (bootverbose)
+		    printf("ar%d: Highpoint write conf failed\n", rdp->lun);
+		return -1;
+	    }
+	}
+    }
+    return 0;
+}
+
 static int
 ar_promise_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
 {
@@ -629,14 +755,14 @@ ar_promise_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
     if (ar_read(adp, PR_LBA(adp), sizeof(struct promise_raid_conf), 
 		(u_int8_t *)info)) {
 	if (bootverbose)
-	    printf("Promise read conf failed\n");
+	    printf("ar: Promise read conf failed\n");
 	goto promise_out;
     }
 
     /* check if this is a Promise RAID struct */
     if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC))) {
 	if (bootverbose)
-	    printf("Promise check1 failed\n");
+	    printf("ar: Promise check1 failed\n");
 	goto promise_out;
     }	
 
@@ -645,16 +771,14 @@ ar_promise_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
 	cksum += *ckptr++;
     if (cksum != *ckptr) {  
 	if (bootverbose)
-	    printf("Promise check2 failed\n");	     
+	    printf("ar: Promise check2 failed\n");	     
 	goto promise_out;
     }
 
     /* now convert Promise config info into our generic form */
-    if ((info->raid.integrity != PR_I_VALID) || 
-	(((info->raid.status & (PR_S_VALID | PR_S_ONLINE)) != 
-	  (PR_S_VALID | PR_S_ONLINE)))) {
+    if (info->raid.integrity != PR_I_VALID) {
 	if (bootverbose)
-	    printf("Promise check3 failed\n");	     
+	    printf("ar: Promise check3 failed\n");	     
 	goto promise_out;
     }
 
@@ -664,7 +788,7 @@ ar_promise_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
 		(struct ar_softc*)malloc(sizeof(struct ar_softc), M_AR,
 					 M_NOWAIT | M_ZERO);
 	    if (!raidp[array]) {
-		printf("ar: failed to allocate raid config storage\n");
+		printf("ar%d: failed to allocate raid config storage\n", array);
 		goto promise_out;
 	    }
 	}
@@ -679,7 +803,8 @@ ar_promise_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
 	    continue;
 
 	/* update our knowledge about the array config based on generation */
-	if (info->raid.generation >= raid->generation) {
+	if (!info->raid.generation || info->raid.generation > raid->generation){
+	    raid->generation = info->raid.generation;
 	    raid->flags = AR_F_PROMISE_RAID;
 	    raid->magic_0 = magic;
 	    raid->lun = array;
@@ -709,7 +834,8 @@ ar_promise_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
 		break;
 
 	    default:
-		printf("Promise unknown RAID type 0x%02x\n", info->raid.type);
+		printf("ar%d: Promise unknown RAID type 0x%02x\n",
+		       array, info->raid.type);
 		goto promise_out;
 	    }
 	    raid->interleave = 1 << info->raid.stripe_shift;
@@ -725,49 +851,194 @@ ar_promise_read_conf(struct ad_softc *adp, struct ar_softc **raidp)
 	    /* convert disk flags to our internal types */
 	    for (disk = 0; disk < info->raid.total_disks; disk++) {
 		raid->disks[disk].flags = 0;
-		if (adp->device) {
-		    if (info->raid.disk[disk].flags & PR_F_VALID)
-			raid->disks[disk].flags |= AR_DF_PRESENT;
-		    if (info->raid.disk[disk].flags & PR_F_ONLINE)
-			raid->disks[disk].flags |= AR_DF_ONLINE;
-		    if (info->raid.disk[disk].flags & PR_F_ASSIGNED)
-			raid->disks[disk].flags |= AR_DF_ASSIGNED;
-		    if (info->raid.disk[disk].flags & PR_F_SPARE)
-			raid->disks[disk].flags |= AR_DF_SPARE;
-		    if (info->raid.disk[disk].flags & (PR_F_REDIR | PR_F_DOWN))
-			raid->disks[disk].flags &= ~AR_DF_ONLINE;
-		    if (info->raid.disk[disk].flags & PR_F_READY)
-			raid->disks[disk].flags |= AR_DF_PRESENT;
+		if (info->raid.disk[disk].flags & PR_F_ONLINE)
+		    raid->disks[disk].flags |= AR_DF_ONLINE;
+		if (info->raid.disk[disk].flags & PR_F_ASSIGNED)
+		    raid->disks[disk].flags |= AR_DF_ASSIGNED;
+		if (info->raid.disk[disk].flags & PR_F_SPARE)
+		    raid->disks[disk].flags |= AR_DF_SPARE;
+		if (info->raid.disk[disk].flags & (PR_F_REDIR | PR_F_DOWN)) {
+		    raid->disks[disk].flags &= ~AR_DF_ONLINE;
+		    raid->disks[disk].flags |= AR_DF_PRESENT;
 		}
 	    }
 	}
-
-	raid->disks[info->raid.disk_number].device = adp->device;
-	error = 0;
+	if (raid->disks[info->raid.disk_number].flags && adp->device) {
+	    raid->disks[info->raid.disk_number].device = adp->device;
+	    raid->disks[info->raid.disk_number].flags |= AR_DF_PRESENT;
+	    error = 0;
+	}
 	break;
     }
-
 promise_out:
     free(info, M_AR);
     return error;
 }
 
 static int
+ar_promise_write_conf(struct ar_softc *rdp)
+{
+    struct promise_raid_conf *config;
+    struct timeval timestamp;
+    u_int32_t *ckptr;
+    int count, disk, drive;
+
+    if (!(config = (struct promise_raid_conf *)
+	  malloc(sizeof(struct promise_raid_conf), M_AR, M_NOWAIT)))
+	return -1;
+
+    for (count = 0; count < sizeof(struct promise_raid_conf); count++)
+	*(((u_int8_t *)config) + count) = 255 - (count % 256);
+
+    rdp->generation++;
+    microtime(&timestamp);
+
+    for (disk = 0; disk < rdp->total_disks; disk++) {
+	bcopy(PR_MAGIC, config->promise_id, sizeof(PR_MAGIC));
+	config->dummy_0 = 0x00020000;
+	config->magic_0 = PR_MAGIC0(rdp->disks[disk]) | timestamp.tv_sec;
+	config->magic_1 = timestamp.tv_sec >> 16;
+	config->magic_2 = timestamp.tv_sec;
+
+	config->raid.integrity = PR_I_VALID;
+
+	config->raid.flags = 0;
+	if (rdp->disks[disk].flags & AR_DF_PRESENT)
+	    config->raid.flags |= PR_F_VALID;
+	if (rdp->disks[disk].flags & AR_DF_ASSIGNED)
+	    config->raid.flags |= PR_F_ASSIGNED;
+	if (rdp->disks[disk].flags & AR_DF_ONLINE)
+	    config->raid.flags |= PR_F_ONLINE;
+	else
+	    config->raid.flags |= PR_F_DOWN;
+	config->raid.disk_number = disk;
+	if (rdp->disks[disk].device) {
+	    config->raid.channel = rdp->disks[disk].device->channel->unit;
+	    config->raid.device = (rdp->disks[disk].device->unit != 0);
+	    if (AD_SOFTC(rdp->disks[disk])->dev->si_disk)
+		config->raid.disk_sectors = PR_LBA(AD_SOFTC(rdp->disks[disk]));
+	    /*config->raid.disk_offset*/
+	}
+	config->raid.magic_0 = config->magic_0;
+	config->raid.rebuild_lba = 0xffffffff;
+	config->raid.generation = rdp->generation;
+
+	if (rdp->flags & AR_F_READY) {
+	    config->raid.status = 
+		(PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY);
+	    if (rdp->flags & AR_F_DEGRADED)
+		config->raid.status |= PR_S_DEGRADED;
+	    else
+		config->raid.status |= PR_S_FUNCTIONAL;
+	}
+	else
+	    config->raid.status = 0;
+
+	switch (rdp->flags & (AR_F_RAID0 | AR_F_RAID1 | AR_F_SPAN)) {
+	case AR_F_RAID0:
+	    config->raid.type = PR_T_RAID0;
+	    break;
+	case AR_F_RAID1:
+	    config->raid.type = PR_T_RAID1;
+	    break;
+	case AR_F_RAID0 | AR_F_RAID1:
+	    config->raid.type = PR_T_RAID1;
+	    break;
+	case AR_F_SPAN:
+	    config->raid.type = PR_T_SPAN;
+	    break;
+	}
+
+	config->raid.total_disks = rdp->total_disks;
+	config->raid.stripe_shift = ffs(rdp->interleave) - 1;
+	config->raid.array_width = rdp->width;
+	config->raid.array_number = rdp->magic_0 >> 16;
+	config->raid.total_sectors = rdp->total_sectors;
+	config->raid.cylinders = rdp->cylinders - 1;
+	config->raid.heads = rdp->heads - 1;
+	config->raid.sectors = rdp->sectors;
+	config->raid.magic_1 = (u_int64_t)config->magic_2<<16 | config->magic_1;
+
+	bzero(&config->raid.disk, 8 * 12);
+	for (drive = 0; drive < rdp->total_disks; drive++) {
+	    config->raid.disk[drive].flags = 0;
+	    if (rdp->disks[drive].flags & AR_DF_PRESENT)
+		config->raid.disk[drive].flags |= PR_F_VALID;
+	    if (rdp->disks[drive].flags & AR_DF_ASSIGNED)
+		config->raid.disk[drive].flags |= PR_F_ASSIGNED;
+	    if (rdp->disks[drive].flags & AR_DF_ONLINE)
+		config->raid.disk[drive].flags |= PR_F_ONLINE;
+	    else
+		config->raid.disk[drive].flags = (PR_F_REDIR | PR_F_DOWN);
+	    if (rdp->disks[drive].flags & AR_DF_SPARE)
+		config->raid.disk[drive].flags |= PR_F_SPARE;
+	    config->raid.disk[drive].dummy_0 = 0x0;
+	    if (rdp->disks[drive].device) {
+		config->raid.disk[drive].channel =
+		    rdp->disks[drive].device->channel->unit;
+		config->raid.disk[drive].device =
+		    (rdp->disks[drive].device->unit != 0);
+	    }
+	    config->raid.disk[drive].magic_0 =
+		PR_MAGIC0(rdp->disks[drive]) | timestamp.tv_sec;
+	}
+
+	config->checksum = 0;
+	for (ckptr = (int32_t *)config, count = 0; count < 511; count++)
+	    config->checksum += *ckptr++;
+
+	if (rdp->disks[disk].device && rdp->disks[disk].device->driver &&
+	    !(rdp->disks[disk].device->flags & ATA_D_DETACHING)) {
+	    if (ar_write(AD_SOFTC(rdp->disks[disk]),
+			 PR_LBA(AD_SOFTC(rdp->disks[disk])),
+			 sizeof(struct promise_raid_conf), (u_int8_t *)config)){
+		if (bootverbose)
+		    printf("ar%d: Promise write conf failed\n", rdp->lun);
+		return -1;
+	    }
+	}
+    }
+    return 0;
+}
+
+static int
 ar_read(struct ad_softc *adp, u_int32_t lba, int count, u_int8_t *data)
 {
     if (ata_command(adp->device, count > DEV_BSIZE ? ATA_C_READ_MUL:ATA_C_READ,
-		    lba, count / DEV_BSIZE, 0, ATA_WAIT_INTR)) {
-	ata_printf(adp->device->channel, adp->device->unit,
-		   "RAID read config failed\n");
+		    lba, count / DEV_BSIZE, 0, ATA_IMMEDIATE)) {
+	ata_prtdev(adp->device, "RAID read config failed\n");
 	return 1;
     }
-    if (ata_wait(adp->device, ATA_S_READY|ATA_S_DSC|ATA_S_DRQ)){
-	ata_printf(adp->device->channel, adp->device->unit,
-		   "RAID read config timeout\n");
+    if (ata_wait(adp->device, ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)){
+	ata_prtdev(adp->device, "RAID read config timeout\n");
 	return 1;
     }
     ATA_INSW(adp->device->channel->r_io, ATA_DATA, (int16_t *)data,
 	     count/sizeof(int16_t));
-    ATA_INB(adp->device->channel->r_io, ATA_STATUS);
+    if (ata_wait(adp->device, ATA_S_READY | ATA_S_DSC) < 0) {
+	ata_prtdev(adp->device, "timeout waiting for final ready\n");
+	return 1;
+    }
+    return 0;
+}
+
+static int
+ar_write(struct ad_softc *adp, u_int32_t lba, int count, u_int8_t *data)
+{
+    if (ata_command(adp->device,count > DEV_BSIZE ? ATA_C_WRITE_MUL:ATA_C_WRITE,
+		    lba, count / DEV_BSIZE, 0, ATA_IMMEDIATE)) {
+	ata_prtdev(adp->device, "RAID write config failed\n");
+	return 1;
+    }
+    if (ata_wait(adp->device, ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)){
+	ata_prtdev(adp->device, "RAID write config timeout\n");
+	return 1;
+    }
+    ATA_OUTSW(adp->device->channel->r_io, ATA_DATA, (int16_t *)data,
+	      count/sizeof(int16_t));
+    if (ata_wait(adp->device, ATA_S_READY | ATA_S_DSC) < 0) {
+	ata_prtdev(adp->device, "timeout waiting for final ready\n");
+	return 1;
+    }
     return 0;
 }