From ea642c3216cb2a60d1c0e760ae47ee85c9c16447 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com> Date: Tue, 28 Mar 2017 16:54:50 +0200 Subject: drm/ttm: add io_mem_pfn callback MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This allows the driver to handle io_mem mappings on their own. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> --- include/drm/ttm/ttm_bo_api.h | 11 +++++++++++ include/drm/ttm/ttm_bo_driver.h | 9 +++++++++ 2 files changed, 20 insertions(+) (limited to 'include/drm') diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 0b1ce05..fa07be1 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -711,6 +711,17 @@ extern int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo); /** + * ttm_bo_default_iomem_pfn - get a pfn for a page offset + * + * @bo: the BO we need to look up the pfn for + * @page_offset: offset inside the BO to look up. + * + * Calculate the PFN for iomem based mappings during page fault + */ +unsigned long ttm_bo_default_io_mem_pfn(struct ttm_buffer_object *bo, + unsigned long page_offset); + +/** * ttm_bo_mmap - mmap out of the ttm device address space. * * @filp: filp as input from the mmap method. diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index 3641c61..6bbd34d 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -462,6 +462,15 @@ struct ttm_bo_driver { struct ttm_mem_reg *mem); void (*io_mem_free)(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem); + + /** + * Return the pfn for a given page_offset inside the BO. + * + * @bo: the BO to look up the pfn for + * @page_offset: the offset to look up + */ + unsigned long (*io_mem_pfn)(struct ttm_buffer_object *bo, + unsigned long page_offset); }; /** -- cgit v1.1 From c8b26bd1d2997e20b5f911c04b1dd2266256b976 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com> Date: Wed, 29 Mar 2017 12:13:54 +0200 Subject: drm/ttm: add TTM_PL_FLAG_CONTIGUOUS v2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This allows drivers to specify if they need a contiguous allocation or not. v2: use space instead of tab Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> --- include/drm/ttm/ttm_placement.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/drm') diff --git a/include/drm/ttm/ttm_placement.h b/include/drm/ttm/ttm_placement.h index 932be0c..e88a8e3 100644 --- a/include/drm/ttm/ttm_placement.h +++ b/include/drm/ttm/ttm_placement.h @@ -63,6 +63,7 @@ #define TTM_PL_FLAG_CACHED (1 << 16) #define TTM_PL_FLAG_UNCACHED (1 << 17) #define TTM_PL_FLAG_WC (1 << 18) +#define TTM_PL_FLAG_CONTIGUOUS (1 << 19) #define TTM_PL_FLAG_NO_EVICT (1 << 21) #define TTM_PL_FLAG_TOPDOWN (1 << 22) -- cgit v1.1