VRAM helpers support ref counting for pin and vmap operations, no need to avoid these operations with the internal kmap interface. Also unexport the kmap interfaces from VRAM helpers.
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de --- drivers/gpu/drm/drm_gem_vram_helper.c | 56 +-------------------------- drivers/gpu/drm/vboxvideo/vbox_mode.c | 10 +++-- include/drm/drm_gem_vram_helper.h | 3 -- 3 files changed, 8 insertions(+), 61 deletions(-)
diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index 5f03c6137ef9..a6af198e26ea 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -97,8 +97,8 @@ static const struct drm_gem_object_funcs drm_gem_vram_object_funcs; * hardware's draing engine. * * To access a buffer object's memory from the DRM driver, call - * drm_gem_vram_kmap(). It (optionally) maps the buffer into kernel address - * space and returns the memory address. Use drm_gem_vram_kunmap() to + * drm_gem_vram_vmap(). It maps the buffer into kernel address + * space and returns the memory address. Use drm_gem_vram_vunmap() to * release the mapping. */
@@ -436,39 +436,6 @@ static void *drm_gem_vram_kmap_locked(struct drm_gem_vram_object *gbo, return kmap->virtual; }
-/** - * drm_gem_vram_kmap() - Maps a GEM VRAM object into kernel address space - * @gbo: the GEM VRAM object - * @map: establish a mapping if necessary - * @is_iomem: returns true if the mapped memory is I/O memory, or false \ - otherwise; can be NULL - * - * This function maps the buffer object into the kernel's address space - * or returns the current mapping. If the parameter map is false, the - * function only queries the current mapping, but does not establish a - * new one. - * - * Returns: - * The buffers virtual address if mapped, or - * NULL if not mapped, or - * an ERR_PTR()-encoded error code otherwise. - */ -void *drm_gem_vram_kmap(struct drm_gem_vram_object *gbo, bool map, - bool *is_iomem) -{ - int ret; - void *virtual; - - ret = ttm_bo_reserve(&gbo->bo, true, false, NULL); - if (ret) - return ERR_PTR(ret); - virtual = drm_gem_vram_kmap_locked(gbo, map, is_iomem); - ttm_bo_unreserve(&gbo->bo); - - return virtual; -} -EXPORT_SYMBOL(drm_gem_vram_kmap); - static void drm_gem_vram_kunmap_locked(struct drm_gem_vram_object *gbo) { if (WARN_ON_ONCE(!gbo->kmap_use_count)) @@ -484,22 +451,6 @@ static void drm_gem_vram_kunmap_locked(struct drm_gem_vram_object *gbo) */ }
-/** - * drm_gem_vram_kunmap() - Unmaps a GEM VRAM object - * @gbo: the GEM VRAM object - */ -void drm_gem_vram_kunmap(struct drm_gem_vram_object *gbo) -{ - int ret; - - ret = ttm_bo_reserve(&gbo->bo, false, false, NULL); - if (WARN_ONCE(ret, "ttm_bo_reserve_failed(): ret=%d\n", ret)) - return; - drm_gem_vram_kunmap_locked(gbo); - ttm_bo_unreserve(&gbo->bo); -} -EXPORT_SYMBOL(drm_gem_vram_kunmap); - /** * drm_gem_vram_vmap() - Pins and maps a GEM VRAM object into kernel address * space @@ -511,9 +462,6 @@ EXPORT_SYMBOL(drm_gem_vram_kunmap); * permanently. Call drm_gem_vram_vunmap() with the returned address to * unmap and unpin the GEM VRAM object. * - * If you have special requirements for the pinning or mapping operations, - * call drm_gem_vram_pin() and drm_gem_vram_kmap() directly. - * * Returns: * The buffer's virtual address on success, or * an ERR_PTR()-encoded error code otherwise. diff --git a/drivers/gpu/drm/vboxvideo/vbox_mode.c b/drivers/gpu/drm/vboxvideo/vbox_mode.c index d9a5af62af89..4fcc0a542b8a 100644 --- a/drivers/gpu/drm/vboxvideo/vbox_mode.c +++ b/drivers/gpu/drm/vboxvideo/vbox_mode.c @@ -397,11 +397,13 @@ static void vbox_cursor_atomic_update(struct drm_plane *plane,
vbox_crtc->cursor_enabled = true;
- /* pinning is done in prepare/cleanup framebuffer */ - src = drm_gem_vram_kmap(gbo, true, NULL); + src = drm_gem_vram_vmap(gbo); if (IS_ERR(src)) { + /* + * BUG: we should have pinned the BO in prepare_fb(). + */ mutex_unlock(&vbox->hw_mutex); - DRM_WARN("Could not kmap cursor bo, skipping update\n"); + DRM_WARN("Could not map cursor bo, skipping update\n"); return; }
@@ -414,7 +416,7 @@ static void vbox_cursor_atomic_update(struct drm_plane *plane, data_size = width * height * 4 + mask_size;
copy_cursor_image(src, vbox->cursor_data, width, height, mask_size); - drm_gem_vram_kunmap(gbo); + drm_gem_vram_vunmap(gbo, src);
flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE | VBOX_MOUSE_POINTER_ALPHA; diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h index 035332f3723f..b34f1da89cc7 100644 --- a/include/drm/drm_gem_vram_helper.h +++ b/include/drm/drm_gem_vram_helper.h @@ -101,9 +101,6 @@ u64 drm_gem_vram_mmap_offset(struct drm_gem_vram_object *gbo); s64 drm_gem_vram_offset(struct drm_gem_vram_object *gbo); int drm_gem_vram_pin(struct drm_gem_vram_object *gbo, unsigned long pl_flag); int drm_gem_vram_unpin(struct drm_gem_vram_object *gbo); -void *drm_gem_vram_kmap(struct drm_gem_vram_object *gbo, bool map, - bool *is_iomem); -void drm_gem_vram_kunmap(struct drm_gem_vram_object *gbo); void *drm_gem_vram_vmap(struct drm_gem_vram_object *gbo); void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo, void *vaddr);