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authorJaedon Shin <jaedon.shin@gmail.com>2015-11-26 05:56:30 +0300
committerTejun Heo <tj@kernel.org>2015-11-30 17:57:32 +0300
commit7de3244530bf418cefdb64b635ee2d64ef63e3c9 (patch)
tree5b10cc1f023807d8c6b1a72f541b4f03f8599884 /drivers/ata
parent7f64d642893bc0e6c501f95dad01c36783a94bee (diff)
downloadlinux-7de3244530bf418cefdb64b635ee2d64ef63e3c9.tar.xz
ata: ahci_brcmstb: disable NCQ for MIPS-based platforms
The most MIPS-based platforms need to disable NCQ while have the NCQ capability in HOST_CAP, and several ARM-based platforms (eg. BCM7349A0, BCM7445A0, BCM7445B0) need to disable too. Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/ahci_brcmstb.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/ata/ahci_brcmstb.c b/drivers/ata/ahci_brcmstb.c
index 14b7305d2ba0..69b8b0252c58 100644
--- a/drivers/ata/ahci_brcmstb.c
+++ b/drivers/ata/ahci_brcmstb.c
@@ -69,10 +69,15 @@
(DATA_ENDIAN << DMADESC_ENDIAN_SHIFT) | \
(MMIO_ENDIAN << MMIO_ENDIAN_SHIFT))
+enum brcm_ahci_quirks {
+ BRCM_AHCI_QUIRK_NO_NCQ = BIT(0),
+};
+
struct brcm_ahci_priv {
struct device *dev;
void __iomem *top_ctrl;
u32 port_mask;
+ u32 quirks;
};
static const struct ata_port_info ahci_brcm_port_info = {
@@ -256,6 +261,9 @@ static int brcm_ahci_probe(struct platform_device *pdev)
if (IS_ERR(priv->top_ctrl))
return PTR_ERR(priv->top_ctrl);
+ if (of_device_is_compatible(dev->of_node, "brcm,bcm7425-ahci"))
+ priv->quirks |= BRCM_AHCI_QUIRK_NO_NCQ;
+
brcm_sata_init(priv);
priv->port_mask = brcm_ahci_get_portmask(pdev, priv);
@@ -273,6 +281,9 @@ static int brcm_ahci_probe(struct platform_device *pdev)
if (ret)
return ret;
+ if (priv->quirks & BRCM_AHCI_QUIRK_NO_NCQ)
+ hpriv->flags |= AHCI_HFLAG_NO_NCQ;
+
ret = ahci_platform_init_host(pdev, hpriv, &ahci_brcm_port_info,
&ahci_platform_sht);
if (ret)