The AST driver establishes several memory mappings for frame buffers and cursors. This patch converts the driver to use the equivalent drm_gem_vram_kmap() functions. It removes the dependencies on TTM and cleans up the code.
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de --- drivers/gpu/drm/ast/ast_drv.h | 1 - drivers/gpu/drm/ast/ast_fb.c | 23 +++++++++------ drivers/gpu/drm/ast/ast_mode.c | 54 ++++++++++++++++++++++++---------- 3 files changed, 53 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h index 32096a191aaf..b6cac9511796 100644 --- a/drivers/gpu/drm/ast/ast_drv.h +++ b/drivers/gpu/drm/ast/ast_drv.h @@ -256,7 +256,6 @@ struct ast_fbdev { struct ast_framebuffer afb; void *sysram; int size; - struct ttm_bo_kmap_obj mapping; int x1, y1, x2, y2; /* dirty rect */ spinlock_t dirty_lock; }; diff --git a/drivers/gpu/drm/ast/ast_fb.c b/drivers/gpu/drm/ast/ast_fb.c index 778423fcf352..505e602855c0 100644 --- a/drivers/gpu/drm/ast/ast_fb.c +++ b/drivers/gpu/drm/ast/ast_fb.c @@ -53,6 +53,7 @@ static void ast_dirty_update(struct ast_fbdev *afbdev, int src_offset, dst_offset; int bpp = afbdev->afb.base.format->cpp[0]; int ret = -EBUSY; + u8 *dst; bool unmap = false; bool store_for_later = false; int x2, y2; @@ -101,27 +102,31 @@ static void ast_dirty_update(struct ast_fbdev *afbdev, afbdev->x2 = afbdev->y2 = 0; spin_unlock_irqrestore(&afbdev->dirty_lock, flags);
- if (!gbo->kmap.virtual) { - ret = ttm_bo_kmap(&gbo->bo, 0, gbo->bo.num_pages, &gbo->kmap); - if (ret) { + dst = drm_gem_vram_kmap(gbo, false, NULL); + if (IS_ERR(dst)) { + DRM_ERROR("failed to kmap fb updates\n"); + goto out; + } else if (!dst) { + dst = drm_gem_vram_kmap(gbo, true, NULL); + if (IS_ERR(dst)) { DRM_ERROR("failed to kmap fb updates\n"); - drm_gem_vram_unreserve(gbo); - return; + goto out; } unmap = true; } + for (i = y; i <= y2; i++) { /* assume equal stride for now */ src_offset = dst_offset = i * afbdev->afb.base.pitches[0] + (x * bpp); - memcpy_toio(gbo->kmap.virtual + src_offset, - afbdev->sysram + dst_offset, + memcpy_toio(dst + dst_offset, afbdev->sysram + src_offset, (x2 - x + 1) * bpp); - } + if (unmap) - ttm_bo_kunmap(&gbo->kmap); + drm_gem_vram_kunmap(gbo);
+out: drm_gem_vram_unreserve(gbo); }
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index b75ed3816642..3475591a22c3 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -532,6 +532,7 @@ static int ast_crtc_do_set_base(struct drm_crtc *crtc, struct drm_gem_vram_object *gbo; int ret; s64 gpu_addr; + void *base;
/* push the previous fb to system ram */ if (!atomic && fb) { @@ -564,11 +565,13 @@ static int ast_crtc_do_set_base(struct drm_crtc *crtc,
if (&ast->fbdev->afb == ast_fb) { /* if pushing console in kmap it */ - ret = ttm_bo_kmap(&gbo->bo, 0, gbo->bo.num_pages, &gbo->kmap); - if (ret) + base = drm_gem_vram_kmap(gbo, true, NULL); + if (IS_ERR(base)) { + ret = PTR_ERR(base); DRM_ERROR("failed to kmap fbcon\n"); - else + } else { ast_fbdev_set_base(ast, gpu_addr); + } } drm_gem_vram_unreserve(gbo);
@@ -928,6 +931,7 @@ static int ast_cursor_init(struct drm_device *dev) struct drm_gem_object *obj; struct drm_gem_vram_object *gbo; s64 gpu_addr; + void *base;
size = (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE) * AST_DEFAULT_HWC_NUM;
@@ -951,9 +955,11 @@ static int ast_cursor_init(struct drm_device *dev) }
/* kmap the object */ - ret = ttm_bo_kmap(&gbo->bo, 0, gbo->bo.num_pages, &ast->cache_kmap); - if (ret) + base = drm_gem_vram_kmap_at(gbo, true, NULL, &ast->cache_kmap); + if (IS_ERR(base)) { + ret = PTR_ERR(base); goto fail; + }
ast->cursor_cache = obj; ast->cursor_cache_gpu_addr = gpu_addr; @@ -966,7 +972,9 @@ static int ast_cursor_init(struct drm_device *dev) static void ast_cursor_fini(struct drm_device *dev) { struct ast_private *ast = dev->dev_private; - ttm_bo_kunmap(&ast->cache_kmap); + struct drm_gem_vram_object *gbo = + drm_gem_vram_of_gem(ast->cursor_cache); + drm_gem_vram_kunmap_at(gbo, &ast->cache_kmap); drm_gem_object_put_unlocked(ast->cursor_cache); }
@@ -1213,13 +1221,21 @@ static int ast_cursor_set(struct drm_crtc *crtc, if (ret) goto fail;
- ret = ttm_bo_kmap(&gbo->bo, 0, gbo->bo.num_pages, &uobj_map); - - src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem); - dst = ttm_kmap_obj_virtual(&ast->cache_kmap, &dst_isiomem); - + memset(&uobj_map, 0, sizeof(uobj_map)); + src = drm_gem_vram_kmap_at(gbo, true, &src_isiomem, &uobj_map); + if (IS_ERR(src)) { + ret = PTR_ERR(src); + goto fail_unreserve; + } if (src_isiomem == true) DRM_ERROR("src cursor bo should be in main memory\n"); + + dst = drm_gem_vram_kmap_at(drm_gem_vram_of_gem(ast->cursor_cache), + false, &dst_isiomem, &ast->cache_kmap); + if (IS_ERR(dst)) { + ret = PTR_ERR(dst); + goto fail_unreserve; + } if (dst_isiomem == false) DRM_ERROR("dst bo should be in VRAM\n");
@@ -1228,11 +1244,14 @@ static int ast_cursor_set(struct drm_crtc *crtc, /* do data transfer to cursor cache */ csum = copy_cursor_image(src, dst, width, height);
- /* write checksum + signature */ - ttm_bo_kunmap(&uobj_map); + drm_gem_vram_kunmap_at(gbo, &uobj_map); drm_gem_vram_unreserve(gbo); + + /* write checksum + signature */ { - u8 *dst = (u8 *)ast->cache_kmap.virtual + (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor + AST_HWC_SIZE; + u8 *dst = drm_gem_vram_kmap_at(drm_gem_vram_of_gem(ast->cursor_cache), + false, NULL, &ast->cache_kmap); + dst += (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor + AST_HWC_SIZE; writel(csum, dst); writel(width, dst + AST_HWC_SIGNATURE_SizeX); writel(height, dst + AST_HWC_SIGNATURE_SizeY); @@ -1258,6 +1277,9 @@ static int ast_cursor_set(struct drm_crtc *crtc,
drm_gem_object_put_unlocked(obj); return 0; + +fail_unreserve: + drm_gem_vram_unreserve(gbo); fail: drm_gem_object_put_unlocked(obj); return ret; @@ -1271,7 +1293,9 @@ static int ast_cursor_move(struct drm_crtc *crtc, int x_offset, y_offset; u8 *sig;
- sig = (u8 *)ast->cache_kmap.virtual + (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor + AST_HWC_SIZE; + sig = drm_gem_vram_kmap_at(drm_gem_vram_of_gem(ast->cursor_cache), + false, NULL, &ast->cache_kmap); + sig += (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor + AST_HWC_SIZE; writel(x, sig + AST_HWC_SIGNATURE_X); writel(y, sig + AST_HWC_SIGNATURE_Y);