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| author | Mark Lord <liml@rtr.ca> | 2008-05-02 02:10:56 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-05-06 11:37:40 -0400 |
| commit | dd2890f60f8e15f14c8eb132779b2f15c49d1203 (patch) | |
| tree | 3cac463b2838748db8507707731c75d1a180e731 /drivers/ata/sata_mv.c | |
| parent | 3e4a139107e497a741c26f8a377a10f214d63ec1 (diff) | |
| download | kernel_samsung_espresso10-dd2890f60f8e15f14c8eb132779b2f15c49d1203.zip kernel_samsung_espresso10-dd2890f60f8e15f14c8eb132779b2f15c49d1203.tar.gz kernel_samsung_espresso10-dd2890f60f8e15f14c8eb132779b2f15c49d1203.tar.bz2 | |
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/sata_mv.c')
| -rw-r--r-- | drivers/ata/sata_mv.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index 0545a49..fbccf21 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)) |