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authorMark Lord <liml@rtr.ca>2008-05-02 02:10:56 -0400
committerJeff Garzik <jgarzik@redhat.com>2008-05-06 11:37:40 -0400
commitdd2890f60f8e15f14c8eb132779b2f15c49d1203 (patch)
tree3cac463b2838748db8507707731c75d1a180e731 /drivers/ata
parent3e4a139107e497a741c26f8a377a10f214d63ec1 (diff)
sata_mv errata workaround for sata25 part 1
Part 1 of workaround for errata "sata#25" for the 60x1 series (the second half of this errata workaround is still in development. Bit22 of the GPIO port has to be set "on" when in NCQ mode. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/sata_mv.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 0545a491610..fbccf215d50 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -1151,6 +1151,21 @@ static void mv_config_fbs(void __iomem *port_mmio, int enable_fbs)
writelfl(new_ltmode, port_mmio + LTMODE_OFS);
}
+static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq)
+{
+ struct mv_host_priv *hpriv = ap->host->private_data;
+ u32 old, new;
+
+ /* workaround for 88SX60x1 FEr SATA#25 (part 1) */
+ old = readl(hpriv->base + MV_GPIO_PORT_CTL_OFS);
+ if (want_ncq)
+ new = old | (1 << 22);
+ else
+ new = old & ~(1 << 22);
+ if (new != old)
+ writel(new, hpriv->base + MV_GPIO_PORT_CTL_OFS);
+}
+
static void mv_edma_cfg(struct ata_port *ap, int want_ncq)
{
u32 cfg;
@@ -1164,10 +1179,11 @@ static void mv_edma_cfg(struct ata_port *ap, int want_ncq)
if (IS_GEN_I(hpriv))
cfg |= (1 << 8); /* enab config burst size mask */
- else if (IS_GEN_II(hpriv))
+ else if (IS_GEN_II(hpriv)) {
cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN;
+ mv_60x1_errata_sata25(ap, want_ncq);
- else if (IS_GEN_IIE(hpriv)) {
+ } else if (IS_GEN_IIE(hpriv)) {
cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */
cfg |= (1 << 22); /* enab 4-entry host queue cache */
if (HAS_PCI(ap->host))