* [PATCH V2 11/16] ata: Use 32-bit DMA in AHCI for Loongson-3.
[not found] <1340088624-25550-1-git-send-email-chenhc@lemote.com>
@ 2012-06-19 6:50 ` Huacai Chen
2012-06-19 12:32 ` Jeff Garzik
0 siblings, 1 reply; 3+ messages in thread
From: Huacai Chen @ 2012-06-19 6:50 UTC (permalink / raw)
To: Ralf Baechle
Cc: linux-mips, Fuxin Zhang, Zhangjin Wu, Huacai Chen, Hongliang Tao,
Hua Yan, linux-ide
This is a workaround because Loongson-3 has a hardware bug that it
doesn't support DMA address above 4GB.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Hongliang Tao <taohl@lemote.com>
Signed-off-by: Hua Yan <yanh@lemote.com>
Cc: linux-ide@vger.kernel.org
---
drivers/ata/ahci.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ebaf67e..3e3cfd8 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -183,7 +183,12 @@ static const struct ata_port_info ahci_port_info[] = {
},
[board_ahci_sb700] = /* for SB700 and SB800 */
{
+#ifndef CONFIG_CPU_LOONGSON3
AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL),
+#else
+ AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
+ AHCI_HFLAG_32BIT_ONLY),
+#endif
.flags = AHCI_FLAG_COMMON,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
--
1.7.7.3
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH V2 11/16] ata: Use 32-bit DMA in AHCI for Loongson-3.
2012-06-19 6:50 ` [PATCH V2 11/16] ata: Use 32-bit DMA in AHCI for Loongson-3 Huacai Chen
@ 2012-06-19 12:32 ` Jeff Garzik
2012-06-19 12:36 ` Huacai Chen
0 siblings, 1 reply; 3+ messages in thread
From: Jeff Garzik @ 2012-06-19 12:32 UTC (permalink / raw)
To: Huacai Chen
Cc: Ralf Baechle, linux-mips, Fuxin Zhang, Zhangjin Wu, Huacai Chen,
Hongliang Tao, Hua Yan, linux-ide
On 06/19/2012 02:50 AM, Huacai Chen wrote:
> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
> index ebaf67e..3e3cfd8 100644
> --- a/drivers/ata/ahci.c
> +++ b/drivers/ata/ahci.c
> @@ -183,7 +183,12 @@ static const struct ata_port_info ahci_port_info[] = {
> },
> [board_ahci_sb700] = /* for SB700 and SB800 */
> {
> +#ifndef CONFIG_CPU_LOONGSON3
> AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL),
> +#else
> + AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
> + AHCI_HFLAG_32BIT_ONLY),
> +#endif
> .flags = AHCI_FLAG_COMMON,
NAK -- the place to fix this up is ahci_init_one()
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH V2 11/16] ata: Use 32-bit DMA in AHCI for Loongson-3.
2012-06-19 12:32 ` Jeff Garzik
@ 2012-06-19 12:36 ` Huacai Chen
0 siblings, 0 replies; 3+ messages in thread
From: Huacai Chen @ 2012-06-19 12:36 UTC (permalink / raw)
To: Jeff Garzik
Cc: Ralf Baechle, linux-mips, Fuxin Zhang, Zhangjin Wu, Huacai Chen,
Hongliang Tao, Hua Yan, linux-ide
OK, thanks.
On Tue, Jun 19, 2012 at 8:32 PM, Jeff Garzik <jeff@garzik.org> wrote:
> On 06/19/2012 02:50 AM, Huacai Chen wrote:
>>
>> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
>> index ebaf67e..3e3cfd8 100644
>> --- a/drivers/ata/ahci.c
>> +++ b/drivers/ata/ahci.c
>> @@ -183,7 +183,12 @@ static const struct ata_port_info ahci_port_info[] =
>> {
>> },
>> [board_ahci_sb700] = /* for SB700 and SB800 */
>> {
>> +#ifndef CONFIG_CPU_LOONGSON3
>> AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL),
>> +#else
>> + AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
>> + AHCI_HFLAG_32BIT_ONLY),
>> +#endif
>> .flags = AHCI_FLAG_COMMON,
>
>
>
> NAK -- the place to fix this up is ahci_init_one()
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-06-19 6:50 ` [PATCH V2 11/16] ata: Use 32-bit DMA in AHCI for Loongson-3 Huacai Chen
2012-06-19 12:32 ` Jeff Garzik
2012-06-19 12:36 ` Huacai Chen
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