diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_fb.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fb.c | 116 |
1 files changed, 83 insertions, 33 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c index 4ef4cd3f9936..294c0513f587 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fb.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c @@ -6,34 +6,23 @@ * Joonyoung Shim <jy0922.shim@samsung.com> * Seung-Woo Kim <sw0312.kim@samsung.com> * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. */ #include <drm/drmP.h> #include <drm/drm_crtc.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_fb_helper.h> +#include <uapi/drm/exynos_drm.h> #include "exynos_drm_drv.h" #include "exynos_drm_fb.h" #include "exynos_drm_gem.h" +#include "exynos_drm_iommu.h" +#include "exynos_drm_encoder.h" #define to_exynos_fb(x) container_of(x, struct exynos_drm_fb, fb) @@ -50,6 +39,32 @@ struct exynos_drm_fb { struct exynos_drm_gem_obj *exynos_gem_obj[MAX_FB_BUFFER]; }; +static int check_fb_gem_memory_type(struct drm_device *drm_dev, + struct exynos_drm_gem_obj *exynos_gem_obj) +{ + unsigned int flags; + + /* + * if exynos drm driver supports iommu then framebuffer can use + * all the buffer types. + */ + if (is_drm_iommu_supported(drm_dev)) + return 0; + + flags = exynos_gem_obj->flags; + + /* + * without iommu support, not support physically non-continuous memory + * for framebuffer. + */ + if (IS_NONCONTIG_BUFFER(flags)) { + DRM_ERROR("cannot use this gem memory type for fb.\n"); + return -EINVAL; + } + + return 0; +} + static void exynos_drm_fb_destroy(struct drm_framebuffer *fb) { struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); @@ -57,6 +72,9 @@ static void exynos_drm_fb_destroy(struct drm_framebuffer *fb) DRM_DEBUG_KMS("%s\n", __FILE__); + /* make sure that overlay data are updated before relesing fb. */ + exynos_drm_encoder_complete_scanout(fb); + drm_framebuffer_cleanup(fb); for (i = 0; i < ARRAY_SIZE(exynos_fb->exynos_gem_obj); i++) { @@ -128,23 +146,32 @@ exynos_drm_framebuffer_init(struct drm_device *dev, struct drm_gem_object *obj) { struct exynos_drm_fb *exynos_fb; + struct exynos_drm_gem_obj *exynos_gem_obj; int ret; + exynos_gem_obj = to_exynos_gem_obj(obj); + + ret = check_fb_gem_memory_type(dev, exynos_gem_obj); + if (ret < 0) { + DRM_ERROR("cannot use this gem memory type for fb.\n"); + return ERR_PTR(-EINVAL); + } + exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); if (!exynos_fb) { DRM_ERROR("failed to allocate exynos drm framebuffer\n"); return ERR_PTR(-ENOMEM); } + drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); + exynos_fb->exynos_gem_obj[0] = exynos_gem_obj; + ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); if (ret) { DRM_ERROR("failed to initialize framebuffer\n"); return ERR_PTR(ret); } - drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); - exynos_fb->exynos_gem_obj[0] = to_exynos_gem_obj(obj); - return &exynos_fb->fb; } @@ -190,9 +217,8 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd) { struct drm_gem_object *obj; - struct drm_framebuffer *fb; struct exynos_drm_fb *exynos_fb; - int i; + int i, ret; DRM_DEBUG_KMS("%s\n", __FILE__); @@ -202,30 +228,56 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, return ERR_PTR(-ENOENT); } - fb = exynos_drm_framebuffer_init(dev, mode_cmd, obj); - if (IS_ERR(fb)) { - drm_gem_object_unreference_unlocked(obj); - return fb; + exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); + if (!exynos_fb) { + DRM_ERROR("failed to allocate exynos drm framebuffer\n"); + return ERR_PTR(-ENOMEM); } - exynos_fb = to_exynos_fb(fb); + drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); + exynos_fb->exynos_gem_obj[0] = to_exynos_gem_obj(obj); exynos_fb->buf_cnt = exynos_drm_format_num_buffers(mode_cmd); DRM_DEBUG_KMS("buf_cnt = %d\n", exynos_fb->buf_cnt); for (i = 1; i < exynos_fb->buf_cnt; i++) { + struct exynos_drm_gem_obj *exynos_gem_obj; + int ret; + obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[i]); if (!obj) { DRM_ERROR("failed to lookup gem object\n"); - exynos_drm_fb_destroy(fb); + kfree(exynos_fb); return ERR_PTR(-ENOENT); } + exynos_gem_obj = to_exynos_gem_obj(obj); + + ret = check_fb_gem_memory_type(dev, exynos_gem_obj); + if (ret < 0) { + DRM_ERROR("cannot use this gem memory type for fb.\n"); + kfree(exynos_fb); + return ERR_PTR(ret); + } + exynos_fb->exynos_gem_obj[i] = to_exynos_gem_obj(obj); } - return fb; + ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); + if (ret) { + for (i = 0; i < exynos_fb->buf_cnt; i++) { + struct exynos_drm_gem_obj *gem_obj; + + gem_obj = exynos_fb->exynos_gem_obj[i]; + drm_gem_object_unreference_unlocked(&gem_obj->base); + } + + kfree(exynos_fb); + return ERR_PTR(ret); + } + + return &exynos_fb->fb; } struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb, @@ -243,9 +295,7 @@ struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb, if (!buffer) return NULL; - DRM_DEBUG_KMS("vaddr = 0x%lx, dma_addr = 0x%lx\n", - (unsigned long)buffer->kvaddr, - (unsigned long)buffer->dma_addr); + DRM_DEBUG_KMS("dma_addr = 0x%lx\n", (unsigned long)buffer->dma_addr); return buffer; } |