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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>
This commit is contained in:
Jaedon Shin 2015-11-26 11:56:30 +09:00 committed by Tejun Heo
parent 7f64d64289
commit 7de3244530
1 changed files with 11 additions and 0 deletions
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11
drivers/ata/ahci_brcmstb.c
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@ -69,10 +69,15 @@
(DATA_ENDIAN << DMADESC_ENDIAN_SHIFT) | \ (DATA_ENDIAN << DMADESC_ENDIAN_SHIFT) | \
(MMIO_ENDIAN << MMIO_ENDIAN_SHIFT)) (MMIO_ENDIAN << MMIO_ENDIAN_SHIFT))
enum brcm_ahci_quirks {
BRCM_AHCI_QUIRK_NO_NCQ = BIT(0),
};
struct brcm_ahci_priv { struct brcm_ahci_priv {
struct device *dev; struct device *dev;
void __iomem *top_ctrl; void __iomem *top_ctrl;
u32 port_mask; u32 port_mask;
u32 quirks;
}; };
static const struct ata_port_info ahci_brcm_port_info = { 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)) if (IS_ERR(priv->top_ctrl))
return PTR_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); brcm_sata_init(priv);
priv->port_mask = brcm_ahci_get_portmask(pdev, 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) if (ret)
return 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, ret = ahci_platform_init_host(pdev, hpriv, &ahci_brcm_port_info,
&ahci_platform_sht); &ahci_platform_sht);
if (ret) if (ret)