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author | Inki Dae <inki.dae@samsung.com> | 2011-11-12 15:23:32 +0900 |
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committer | Inki Dae <inki.dae@samsung.com> | 2011-11-15 14:58:46 +0900 |
commit | 2c871127e994a678b82104a4110eb7fcc87f05ad (patch) | |
tree | 76ec83f5dc4232b57202eb916009932ed1b471bc /drivers/gpu/drm/exynos/exynos_drm_gem.h | |
parent | c7493668eeced636afabfed57dfead8329c3d7fa (diff) | |
download | op-kernel-dev-2c871127e994a678b82104a4110eb7fcc87f05ad.zip op-kernel-dev-2c871127e994a678b82104a4110eb7fcc87f05ad.tar.gz |
drm/exynos: changed buffer structure.
the purpose of this patch is to consider IOMMU support in the future.
EXYNOS4 SoC supports IOMMU also so the address for DMA could be
physical address with IOMMU or device address with IOMMU.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_gem.h')
-rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_gem.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h index 213838d..ef87973 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.h +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h @@ -30,13 +30,29 @@ struct exynos_drm_gem_obj, base) /* + * exynos drm gem buffer structure. + * + * @kvaddr: kernel virtual address to allocated memory region. + * @dma_addr: bus address(accessed by dma) to allocated memory region. + * - this address could be physical address without IOMMU and + * device address with IOMMU. + * @size: size of allocated memory region. + */ +struct exynos_drm_gem_buf { + void __iomem *kvaddr; + dma_addr_t dma_addr; + unsigned long size; +}; + +/* * exynos drm buffer structure. * * @base: a gem object. * - a new handle to this gem object would be created * by drm_gem_handle_create(). - * @entry: pointer to exynos drm buffer entry object. - * - containing the information to physically + * @buffer: a pointer to exynos_drm_gem_buffer object. + * - contain the information to memory region allocated + * by user request or at framebuffer creation. * continuous memory region allocated by user request * or at framebuffer creation. * @@ -45,7 +61,7 @@ */ struct exynos_drm_gem_obj { struct drm_gem_object base; - struct exynos_drm_buf_entry *entry; + struct exynos_drm_gem_buf *buffer; }; /* create a new buffer and get a new gem handle. */ |