diff options
author | Jeff Garzik <jeff@garzik.org> | 2006-03-29 19:43:31 -0500 |
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committer | Jeff Garzik <jeff@garzik.org> | 2006-03-29 19:43:31 -0500 |
commit | 55d8ca4f8094246da6e71889a4e04bfafaa78b10 (patch) | |
tree | fd6a562c93363ea11952e818e16cd080fac8caba | |
parent | 00b6f5e9e04b2186a71a5892640bb2d8e09a030e (diff) | |
parent | 63af2a5c5990d95f1e7d8795f1425fb976ea2b4b (diff) | |
download | linux-55d8ca4f8094246da6e71889a4e04bfafaa78b10.tar.bz2 |
Merge branch 'mv-merge'
Conflicts:
drivers/scsi/sata_mv.c
-rw-r--r-- | drivers/scsi/sata_mv.c | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c index 275ed9bd898c..fa901fd65085 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; @@ -1373,25 +1372,32 @@ 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 | ATA_FLAG_NOINTR))) + if (ap->flags & (ATA_FLAG_PORT_DISABLED | ATA_FLAG_NOINTR)) continue; err_mask = ac_err_mask(ata_status); @@ -1403,12 +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 */ |