Ric Wheeler wrote:
c001n01: 0: [ OK ]
ata3: spurious interrupt (irq_stat 0x8 active_tag -84148995 sactive
0x2000000f)
ata3: spurious SDB FIS 004040a1:10000000 ap->qc_active=2000000f
qc_active=2000000f
ata1: spurious interrupt (irq_stat 0x8 active_tag -84148995 sactive
0xfffc0)
ata1: spurious SDB FIS 004040a1:00000020 ap->qc_active=000fffc0
qc_active=000fffc0
ata2: spurious interrupt (irq_stat 0x8 active_tag -84148995 sactive
0x7fffff3f)
ata2: spurious SDB FIS 004040a1:00000080 ap->qc_active=7fffff3f
qc_active=7fffff3f
ata1: spurious interrupt (irq_stat 0x8 active_tag -84148995 sactive
0x7fffff9f)
ata1: spurious SDB FIS 004040a1:00000040 ap->qc_active=7fffff9f
qc_active=7fffff9f
c001n03: 0: [ OK ]
ata1: spurious interrupt (irq_stat 0x8 active_tag -84148995 sactive
0x7ffe7fff)
ata1: spurious SDB FIS 004040a1:00010000 ap->qc_active=7ffe7fff
qc_active=7ffe7fff
c001n04: 0: [ OK ]
ata3: spurious interrupt (irq_stat 0x8 active_tag -84148995 sactive 0x31)
ata3: spurious SDB FIS 004040a1:00000008 ap->qc_active=00000031
qc_active=00000031
ata3: spurious interrupt (irq_stat 0x8 active_tag -84148995 sactive
0x7fff800f)
ata3: spurious SDB FIS 004040a1:00004000 ap->qc_active=7fff800f
qc_active=7fff800f
c001n06: 1: [ FAIL ]
c001n07: 0: [ OK ]
ata1: spurious interrupt (irq_stat 0x8 active_tag -84148995 sactive
0x7ffffcff)
ata1: spurious SDB FIS 004040a1:00000200 ap->qc_active=7ffffcff
qc_active=7ffffcff
c001n08: 0: [ OK ]
ata1: spurious interrupt (irq_stat 0x8 active_tag -84148995 sactive
0x4fffffff)
ata1: spurious SDB FIS 004040a1:20000000 ap->qc_active=4fffffff
qc_active=4fffffff
Hmmm.. The drive is issuing SDB FIS which completes already completed
tags. This could be dangerous. Depending on timing, it might end up
finishing a command which occupied the slot which hasn't been processed
yet. If a drive does this, NCQ shouldn't be enabled for it. Can you
post full boot dmesg?
I'm attaching slightly modified version of the debug patch just in case.
It will probably show the same thing.
--
tejun
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 45fd71d..f9eeb15 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -876,6 +876,7 @@ static void ahci_host_intr(struct ata_po
struct ata_eh_info *ehi = &ap->eh_info;
u32 status, qc_active;
int rc;
+ u32 orig_qc_active = ap->qc_active;
status = readl(port_mmio + PORT_IRQ_STAT);
writel(status, port_mmio + PORT_IRQ_STAT);
@@ -916,10 +917,19 @@ static void ahci_host_intr(struct ata_po
return;
}
- if (ata_ratelimit())
+ if (ata_ratelimit()) {
ata_port_printk(ap, KERN_INFO, "spurious interrupt "
"(irq_stat 0x%x active_tag %d sactive 0x%x)\n",
status, ap->active_tag, ap->sactive);
+ if (status & PORT_IRQ_SDB_FIS) {
+ struct ahci_port_priv *pp = ap->private_data;
+ u32 *sdb_fis = pp->rx_fis + 0x58;
+
+ ata_port_printk(ap, KERN_INFO, "spurious SDB FIS "
+ "%08x:%08x orig_qc_active=%08x qc_active=%08x\n",
+ sdb_fis[0], sdb_fis[1], orig_qc_active, qc_active);
+ }
+ }
}
static void ahci_irq_clear(struct ata_port *ap)
