From: m.szyprowski@samsung•com (Marek Szyprowski)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH V4 1/3] arm: dma mapping: Export a dma ops function arm_dma_set_mask
Date: Wed, 21 Nov 2012 11:00:19 +0100 [thread overview]
Message-ID: <50ACA633.7020207@samsung.com> (raw)
In-Reply-To: <1353490783-23101-2-git-send-email-gregory.clement@free-electrons.com>
Hello,
On 11/21/2012 10:39 AM, Gregory CLEMENT wrote:
> Expose another DMA operations function: arm_dma_set_mask. This
> function will be added to a custom DMA ops for Armada 370/XP.
> Depending of its configuration Armada 370/XP can be set as a "nearly"
> coherent architecture. In this case the DMA ops is made of:
> - specific functions for this architecture
> - already exposed arm DMA related functions
> - the arm_dma_set_mask which was not exposed yet.
>
> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons•com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung•com>
> ---
> arch/arm/include/asm/dma-mapping.h | 2 ++
> arch/arm/mm/dma-mapping.c | 4 +---
> 2 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
> index 2300484..98d4dab 100644
> --- a/arch/arm/include/asm/dma-mapping.h
> +++ b/arch/arm/include/asm/dma-mapping.h
> @@ -111,6 +111,8 @@ static inline void dma_free_noncoherent(struct device *dev, size_t size,
>
> extern int dma_supported(struct device *dev, u64 mask);
>
> +extern int arm_dma_set_mask(struct device *dev, u64 dma_mask);
> +
> /**
> * arm_dma_alloc - allocate consistent memory for DMA
> * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
> diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
> index 58bc3e4..5383bc0 100644
> --- a/arch/arm/mm/dma-mapping.c
> +++ b/arch/arm/mm/dma-mapping.c
> @@ -124,8 +124,6 @@ static void arm_dma_sync_single_for_device(struct device *dev,
> __dma_page_cpu_to_dev(page, offset, size, dir);
> }
>
> -static int arm_dma_set_mask(struct device *dev, u64 dma_mask);
> -
> struct dma_map_ops arm_dma_ops = {
> .alloc = arm_dma_alloc,
> .free = arm_dma_free,
> @@ -971,7 +969,7 @@ int dma_supported(struct device *dev, u64 mask)
> }
> EXPORT_SYMBOL(dma_supported);
>
> -static int arm_dma_set_mask(struct device *dev, u64 dma_mask)
> +int arm_dma_set_mask(struct device *dev, u64 dma_mask)
> {
> if (!dev->dma_mask || !dma_supported(dev, dma_mask))
> return -EIO;
Best regards
--
Marek Szyprowski
Samsung Poland R&D Center
next prev parent reply other threads:[~2012-11-21 10:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-21 9:39 [PATCH V4 0/3] Add hardware I/O coherency support for Armada 370/XP Gregory CLEMENT
2012-11-21 9:39 ` [PATCH V4 1/3] arm: dma mapping: Export a dma ops function arm_dma_set_mask Gregory CLEMENT
2012-11-21 10:00 ` Marek Szyprowski [this message]
2012-11-21 10:03 ` Gregory CLEMENT
2012-11-21 9:39 ` [PATCH V4 2/3] arm: plat-orion: Add coherency attribute when setup mbus target Gregory CLEMENT
2012-11-21 9:39 ` [PATCH V4 3/3] arm: mvebu: Add hardware I/O Coherency support Gregory CLEMENT
2012-11-21 10:04 ` Marek Szyprowski
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