diff options
Diffstat (limited to 'meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4586-drm-amdgpu-Add-documentation-for-PRIME-related-code.patch')
| -rw-r--r-- | meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4586-drm-amdgpu-Add-documentation-for-PRIME-related-code.patch | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4586-drm-amdgpu-Add-documentation-for-PRIME-related-code.patch b/meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4586-drm-amdgpu-Add-documentation-for-PRIME-related-code.patch deleted file mode 100644 index 424039b1..00000000 --- a/meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4586-drm-amdgpu-Add-documentation-for-PRIME-related-code.patch +++ /dev/null @@ -1,231 +0,0 @@ -From 4bd7a3507a307848df7842f599c8295d45575948 Mon Sep 17 00:00:00 2001 -From: Michel Daenzer <michel.daenzer@amd.com> -Date: Tue, 29 May 2018 18:33:41 +0200 -Subject: [PATCH 4586/5725] drm/amdgpu: Add documentation for PRIME related - code -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Reviewed-by: Alex Deucher <alexander.deucher@amd.com> -Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> -Signed-off-by: Kalyan Alle <kalyan.alle@amd.com> - -Conflicts: - drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c - -Change-Id: I5bd9e7536250c9a1e9f914b87443c3b63aa2988f ---- - drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c | 119 ++++++++++++++++++++++++++++++ - 1 file changed, 119 insertions(+) - -diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c -index 63d5a01..5472366 100644 ---- a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c -+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c -@@ -23,6 +23,14 @@ - * - * Authors: Alex Deucher - */ -+ -+/** -+ * DOC: PRIME Buffer Sharing -+ * -+ * The following callback implementations are used for :ref:`sharing GEM buffer -+ * objects between different devices via PRIME <prime_buffer_sharing>`. -+ */ -+ - #include <drm/drmP.h> - - #include "amdgpu.h" -@@ -30,6 +38,14 @@ - #include <drm/amdgpu_drm.h> - #include <linux/dma-buf.h> - -+/** -+ * amdgpu_gem_prime_get_sg_table - &drm_driver.gem_prime_get_sg_table -+ * implementation -+ * @obj: GEM buffer object -+ * -+ * Returns: -+ * A scatter/gather table for the pinned pages of the buffer object's memory. -+ */ - struct sg_table *amdgpu_gem_prime_get_sg_table(struct drm_gem_object *obj) - { - struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); -@@ -38,6 +54,15 @@ struct sg_table *amdgpu_gem_prime_get_sg_table(struct drm_gem_object *obj) - return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages); - } - -+/** -+ * amdgpu_gem_prime_vmap - &dma_buf_ops.vmap implementation -+ * @obj: GEM buffer object -+ * -+ * Sets up an in-kernel virtual mapping of the buffer object's memory. -+ * -+ * Returns: -+ * The virtual address of the mapping or an error pointer. -+ */ - void *amdgpu_gem_prime_vmap(struct drm_gem_object *obj) - { - struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); -@@ -51,6 +76,13 @@ void *amdgpu_gem_prime_vmap(struct drm_gem_object *obj) - return bo->dma_buf_vmap.virtual; - } - -+/** -+ * amdgpu_gem_prime_vunmap - &dma_buf_ops.vunmap implementation -+ * @obj: GEM buffer object -+ * @vaddr: virtual address (unused) -+ * -+ * Tears down the in-kernel virtual mapping of the buffer object's memory. -+ */ - void amdgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) - { - struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); -@@ -58,6 +90,17 @@ void amdgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) - ttm_bo_kunmap(&bo->dma_buf_vmap); - } - -+/** -+ * amdgpu_gem_prime_mmap - &drm_driver.gem_prime_mmap implementation -+ * @obj: GEM buffer object -+ * @vma: virtual memory area -+ * -+ * Sets up a userspace mapping of the buffer object's memory in the given -+ * virtual memory area. -+ * -+ * Returns: -+ * 0 on success or negative error code. -+ */ - int amdgpu_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) - { - struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); -@@ -92,6 +135,19 @@ int amdgpu_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma - return ret; - } - -+/** -+ * amdgpu_gem_prime_import_sg_table - &drm_driver.gem_prime_import_sg_table -+ * implementation -+ * @dev: DRM device -+ * @attach: DMA-buf attachment -+ * @sg: Scatter/gather table -+ * -+ * Import shared DMA buffer memory exported by another device. -+ * -+ * Returns: -+ * A new GEM buffer object of the given DRM device, representing the memory -+ * described by the given DMA-buf attachment and scatter/gather table. -+ */ - struct drm_gem_object * - amdgpu_gem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, -@@ -135,6 +191,19 @@ amdgpu_gem_prime_import_sg_table(struct drm_device *dev, - } - - #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 17, 0) || !defined(BUILD_AS_DKMS) -+/** -+ * amdgpu_gem_map_attach - &dma_buf_ops.attach implementation -+ * @dma_buf: shared DMA buffer -+ * @target_dev: target device -+ * @attach: DMA-buf attachment -+ * -+ * Makes sure that the shared DMA buffer can be accessed by the target device. -+ * For now, simply pins it to the GTT domain, where it should be accessible by -+ * all DMA devices. -+ * -+ * Returns: -+ * 0 on success or negative error code. -+ */ - static int amdgpu_gem_map_attach(struct dma_buf *dma_buf, - struct device *target_dev, - struct dma_buf_attachment *attach) -@@ -184,6 +253,14 @@ static int amdgpu_gem_map_attach(struct dma_buf *dma_buf, - return r; - } - -+/** -+ * amdgpu_gem_map_detach - &dma_buf_ops.detach implementation -+ * @dma_buf: shared DMA buffer -+ * @attach: DMA-buf attachment -+ * -+ * This is called when a shared DMA buffer no longer needs to be accessible by -+ * the other device. For now, simply unpins the buffer from GTT. -+ */ - static void amdgpu_gem_map_detach(struct dma_buf *dma_buf, - struct dma_buf_attachment *attach) - { -@@ -205,6 +282,13 @@ static void amdgpu_gem_map_detach(struct dma_buf *dma_buf, - } - #endif - -+/** -+ * amdgpu_gem_prime_res_obj - &drm_driver.gem_prime_res_obj implementation -+ * @obj: GEM buffer object -+ * -+ * Returns: -+ * The buffer object's reservation object. -+ */ - struct reservation_object *amdgpu_gem_prime_res_obj(struct drm_gem_object *obj) - { - struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); -@@ -213,6 +297,18 @@ struct reservation_object *amdgpu_gem_prime_res_obj(struct drm_gem_object *obj) - } - - #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 17, 0) || !defined(BUILD_AS_DKMS) -+/** -+ * amdgpu_gem_begin_cpu_access - &dma_buf_ops.begin_cpu_access implementation -+ * @dma_buf: shared DMA buffer -+ * @direction: direction of DMA transfer -+ * -+ * This is called before CPU access to the shared DMA buffer's memory. If it's -+ * a read access, the buffer is moved to the GTT domain if possible, for optimal -+ * CPU read performance. -+ * -+ * Returns: -+ * 0 on success or negative error code. -+ */ - static int amdgpu_gem_begin_cpu_access(struct dma_buf *dma_buf, - enum dma_data_direction direction) - { -@@ -258,6 +354,18 @@ const struct dma_buf_ops amdgpu_dmabuf_ops = { - }; - #endif - -+/** -+ * amdgpu_gem_prime_export - &drm_driver.gem_prime_export implementation -+ * @dev: DRM device -+ * @gobj: GEM buffer object -+ * @flags: flags like DRM_CLOEXEC and DRM_RDWR -+ * -+ * The main work is done by the &drm_gem_prime_export helper, which in turn -+ * uses &amdgpu_gem_prime_res_obj. -+ * -+ * Returns: -+ * Shared DMA buffer representing the GEM buffer object from the given device. -+ */ - struct dma_buf *amdgpu_gem_prime_export(struct drm_device *dev, - struct drm_gem_object *gobj, - int flags) -@@ -280,6 +388,17 @@ struct dma_buf *amdgpu_gem_prime_export(struct drm_device *dev, - } - - #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 17, 0) || !defined(BUILD_AS_DKMS) -+/** -+ * amdgpu_gem_prime_import - &drm_driver.gem_prime_import implementation -+ * @dev: DRM device -+ * @dma_buf: Shared DMA buffer -+ * -+ * The main work is done by the &drm_gem_prime_import helper, which in turn -+ * uses &amdgpu_gem_prime_import_sg_table. -+ * -+ * Returns: -+ * GEM buffer object representing the shared DMA buffer for the given device. -+ */ - struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev, - struct dma_buf *dma_buf) - { --- -2.7.4 - |