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path: root/drivers/gpu/drm/exynos/exynos_drm_gem.h
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Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_gem.h')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_gem.h28
1 files changed, 22 insertions, 6 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h
index e5fc0148277b..ef8797334e6d 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.
*
@@ -45,13 +61,13 @@
*/
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. */
-struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_file *file_priv,
- struct drm_device *dev, unsigned int size,
- unsigned int *handle);
+struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev,
+ struct drm_file *file_priv,
+ unsigned int *handle, unsigned long size);
/*
* request gem object creation and buffer allocation as the size