| Message ID | 1376042714-26513-1-git-send-email-tushar.behera@linaro.org |
|---|---|
| State | New |
| Headers | show |
On Fri, Aug 09, 2013 at 03:35:14PM +0530, Tushar Behera wrote:
> When LPAE is enabled, we need to set 64bit DMA mask bits.
*Please* check the list archives. I sent during the last 7 days a patch
series which should address this problem. Unfortunately, it seems almost
no one has looked at it.
On 9 August 2013 15:57, Russell King - ARM Linux <linux@arm.linux.org.uk> wrote: > On Fri, Aug 09, 2013 at 03:35:14PM +0530, Tushar Behera wrote: >> When LPAE is enabled, we need to set 64bit DMA mask bits. > > *Please* check the list archives. I sent during the last 7 days a patch > series which should address this problem. Unfortunately, it seems almost > no one has looked at it. Thanks for the patchset. Tested on Arndale.
On Fri, Aug 09, 2013 at 04:41:57PM +0530, Tushar Behera wrote: > On 9 August 2013 15:57, Russell King - ARM Linux <linux@arm.linux.org.uk> wrote: > > On Fri, Aug 09, 2013 at 03:35:14PM +0530, Tushar Behera wrote: > >> When LPAE is enabled, we need to set 64bit DMA mask bits. > > > > *Please* check the list archives. I sent during the last 7 days a patch > > series which should address this problem. Unfortunately, it seems almost > > no one has looked at it. > > Thanks for the patchset. Tested on Arndale. Thanks - can I assume that's a proper Tested-by: ? Also, please confirm the patch numbers which you tested. Thanks.
On 9 August 2013 16:46, Russell King - ARM Linux <linux@arm.linux.org.uk> wrote: > On Fri, Aug 09, 2013 at 04:41:57PM +0530, Tushar Behera wrote: >> On 9 August 2013 15:57, Russell King - ARM Linux <linux@arm.linux.org.uk> wrote: >> > On Fri, Aug 09, 2013 at 03:35:14PM +0530, Tushar Behera wrote: >> >> When LPAE is enabled, we need to set 64bit DMA mask bits. >> > >> > *Please* check the list archives. I sent during the last 7 days a patch >> > series which should address this problem. Unfortunately, it seems almost >> > no one has looked at it. >> >> Thanks for the patchset. Tested on Arndale. > > Thanks - can I assume that's a proper Tested-by: ? Also, please confirm > the patch numbers which you tested. Thanks. Replied to [PATCH 46/51] with a Tested-by.
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c index f874b77..2217631 100644 --- a/arch/arm/mach-exynos/mach-exynos5-dt.c +++ b/arch/arm/mach-exynos/mach-exynos5-dt.c @@ -14,6 +14,7 @@ #include <linux/memblock.h> #include <linux/io.h> #include <linux/clocksource.h> +#include <linux/dma-mapping.h> #include <asm/mach/arch.h> #include <mach/regs-pmu.h> @@ -23,6 +24,26 @@ #include "common.h" +static u64 dma_mask64 = DMA_BIT_MASK(64); + +static int exynos5250_platform_notifier(struct notifier_block *nb, + unsigned long event, void *__dev) +{ + struct device *dev = __dev; + + if (event != BUS_NOTIFY_ADD_DEVICE) + return NOTIFY_DONE; + + dev->dma_mask = &dma_mask64; + dev->coherent_dma_mask = DMA_BIT_MASK(64); + + return NOTIFY_OK; +} + +static struct notifier_block exynos5250_platform_nb = { + .notifier_call = exynos5250_platform_notifier, +}; + static void __init exynos5_dt_machine_init(void) { struct device_node *i2c_np; @@ -47,6 +68,11 @@ static void __init exynos5_dt_machine_init(void) } } + if (config_enabled(CONFIG_ARM_LPAE) && + of_machine_is_compatible("samsung,exynos5250")) + bus_register_notifier(&platform_bus_type, + &exynos5250_platform_nb); + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); }
When LPAE is enabled, we need to set 64bit DMA mask bits. Signed-off-by: Tushar Behera <tushar.behera@linaro.org> --- Based on v3.11-rc4. arch/arm/mach-exynos/mach-exynos5-dt.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)