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authorJeff Garzik <jeff@garzik.org>2006-03-29 19:59:39 -0500
committerJeff Garzik <jeff@garzik.org>2006-03-29 19:59:39 -0500
commit4f0e7c51ae392d841be395a9c6b8d26a9fbf33d2 (patch)
tree664564736e52a88e14d9c699c5c723b89785f4cb /drivers/scsi/sata_mv.c
parent74d89c16735d83349ea74232031819e989a49156 (diff)
parent55d8ca4f8094246da6e71889a4e04bfafaa78b10 (diff)
Merge branch 'upstream'
Conflicts: drivers/scsi/sata_mv.c
Diffstat (limited to 'drivers/scsi/sata_mv.c')
-rw-r--r--drivers/scsi/sata_mv.c39
1 files changed, 23 insertions, 16 deletions
diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c
index 2819a75c4a8..4d965601efc 100644
--- a/drivers/scsi/sata_mv.c
+++ b/drivers/scsi/sata_mv.c
@@ -1010,7 +1010,7 @@ static void mv_fill_sg(struct ata_queued_cmd *qc)
pp->sg_tbl[i].addr = cpu_to_le32(addr & 0xffffffff);
pp->sg_tbl[i].addr_hi = cpu_to_le32((addr >> 16) >> 16);
- pp->sg_tbl[i].flags_size = cpu_to_le32(len);
+ pp->sg_tbl[i].flags_size = cpu_to_le32(len & 0xffff);
sg_len -= len;
addr += len;
@@ -1350,7 +1350,6 @@ static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
{
void __iomem *mmio = host_set->mmio_base;
void __iomem *hc_mmio = mv_hc_base(mmio, hc);
- struct ata_port *ap;
struct ata_queued_cmd *qc;
u32 hc_irq_cause;
int shift, port, port0, hard_port, handled;
@@ -1373,21 +1372,29 @@ static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
for (port = port0; port < port0 + MV_PORTS_PER_HC; port++) {
u8 ata_status = 0;
- ap = host_set->ports[port];
+ struct ata_port *ap = host_set->ports[port];
+ struct mv_port_priv *pp = ap->private_data;
+
hard_port = port & MV_PORT_MASK; /* range 0-3 */
handled = 0; /* ensure ata_status is set if handled++ */
- if ((CRPB_DMA_DONE << hard_port) & hc_irq_cause) {
- /* new CRPB on the queue; just one at a time until NCQ
- */
- ata_status = mv_get_crpb_status(ap);
- handled++;
- } else if ((DEV_IRQ << hard_port) & hc_irq_cause) {
- /* received ATA IRQ; read the status reg to clear INTRQ
- */
- ata_status = readb((void __iomem *)
+ /* Note that DEV_IRQ might happen spuriously during EDMA,
+ * and should be ignored in such cases. We could mask it,
+ * but it's pretty rare and may not be worth the overhead.
+ */
+ if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
+ /* EDMA: check for response queue interrupt */
+ if ((CRPB_DMA_DONE << hard_port) & hc_irq_cause) {
+ ata_status = mv_get_crpb_status(ap);
+ handled = 1;
+ }
+ } else {
+ /* PIO: check for device (drive) interrupt */
+ if ((DEV_IRQ << hard_port) & hc_irq_cause) {
+ ata_status = readb((void __iomem *)
ap->ioaddr.status_addr);
- handled++;
+ handled = 1;
+ }
}
if (ap && (ap->flags & ATA_FLAG_PORT_DISABLED))
@@ -1402,12 +1409,12 @@ static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
if ((PORT0_ERR << shift) & relevant) {
mv_err_intr(ap);
err_mask |= AC_ERR_OTHER;
- handled++;
+ handled = 1;
}
- if (handled && ap) {
+ if (handled) {
qc = ata_qc_from_tag(ap, ap->active_tag);
- if (NULL != qc) {
+ if (qc && (qc->flags & ATA_QCFLAG_ACTIVE)) {
VPRINTK("port %u IRQ found for qc, "
"ata_status 0x%x\n", port,ata_status);
/* mark qc status appropriately */