| /* |
| * Copyright 2015 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifdef DRV_MEDIATEK |
| |
| // clang-format off |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <xf86drm.h> |
| #include <mediatek_drm.h> |
| // clang-format on |
| |
| #include "drv_priv.h" |
| #include "helpers.h" |
| #include "util.h" |
| |
| struct mediatek_private_map_data { |
| void *cached_addr; |
| void *gem_addr; |
| }; |
| |
| static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888, |
| DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888, |
| DRM_FORMAT_XRGB8888 }; |
| |
| static const uint32_t texture_source_formats[] = { DRM_FORMAT_R8, DRM_FORMAT_YVU420, |
| DRM_FORMAT_YVU420_ANDROID }; |
| |
| static int mediatek_init(struct driver *drv) |
| { |
| int ret; |
| ret = drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats), |
| &LINEAR_METADATA, BO_USE_RENDER_MASK); |
| if (ret) |
| return ret; |
| |
| ret = drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats), |
| &LINEAR_METADATA, BO_USE_TEXTURE_MASK); |
| if (ret) |
| return ret; |
| |
| return drv_modify_linear_combinations(drv); |
| } |
| |
| static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format, |
| uint64_t use_flags) |
| { |
| int ret; |
| size_t plane; |
| uint32_t stride; |
| struct drm_mtk_gem_create gem_create; |
| |
| /* |
| * Since the ARM L1 cache line size is 64 bytes, align to that as a |
| * performance optimization. |
| */ |
| stride = drv_stride_from_format(format, width, 0); |
| stride = ALIGN(stride, 64); |
| drv_bo_from_format(bo, stride, height, format); |
| |
| memset(&gem_create, 0, sizeof(gem_create)); |
| gem_create.size = bo->total_size; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create); |
| if (ret) { |
| fprintf(stderr, "drv: DRM_IOCTL_MTK_GEM_CREATE failed (size=%llu)\n", |
| gem_create.size); |
| return ret; |
| } |
| |
| for (plane = 0; plane < bo->num_planes; plane++) |
| bo->handles[plane].u32 = gem_create.handle; |
| |
| return 0; |
| } |
| |
| static void *mediatek_bo_map(struct bo *bo, struct map_info *data, size_t plane, int prot) |
| { |
| int ret; |
| struct drm_mtk_gem_map_off gem_map; |
| struct mediatek_private_map_data *priv; |
| |
| memset(&gem_map, 0, sizeof(gem_map)); |
| gem_map.handle = bo->handles[0].u32; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map); |
| if (ret) { |
| fprintf(stderr, "drv: DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n"); |
| return MAP_FAILED; |
| } |
| |
| void *addr = mmap(0, bo->total_size, prot, MAP_SHARED, bo->drv->fd, gem_map.offset); |
| |
| data->length = bo->total_size; |
| |
| if (bo->use_flags & BO_USE_RENDERSCRIPT) { |
| priv = calloc(1, sizeof(*priv)); |
| priv->cached_addr = calloc(1, bo->total_size); |
| priv->gem_addr = addr; |
| memcpy(priv->cached_addr, priv->gem_addr, bo->total_size); |
| data->priv = priv; |
| addr = priv->cached_addr; |
| } |
| |
| return addr; |
| } |
| |
| static int mediatek_bo_unmap(struct bo *bo, struct map_info *data) |
| { |
| if (data->priv) { |
| struct mediatek_private_map_data *priv = data->priv; |
| data->addr = priv->gem_addr; |
| free(priv->cached_addr); |
| free(priv); |
| data->priv = NULL; |
| } |
| |
| return munmap(data->addr, data->length); |
| } |
| |
| static int mediatek_bo_flush(struct bo *bo, struct map_info *data) |
| { |
| struct mediatek_private_map_data *priv = data->priv; |
| if (priv) |
| memcpy(priv->gem_addr, priv->cached_addr, bo->total_size); |
| |
| return 0; |
| } |
| |
| static uint32_t mediatek_resolve_format(uint32_t format, uint64_t use_flags) |
| { |
| switch (format) { |
| case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED: |
| /*HACK: See b/28671744 */ |
| return DRM_FORMAT_XBGR8888; |
| case DRM_FORMAT_FLEX_YCbCr_420_888: |
| return DRM_FORMAT_YVU420; |
| default: |
| return format; |
| } |
| } |
| |
| struct backend backend_mediatek = { |
| .name = "mediatek", |
| .init = mediatek_init, |
| .bo_create = mediatek_bo_create, |
| .bo_destroy = drv_gem_bo_destroy, |
| .bo_import = drv_prime_bo_import, |
| .bo_map = mediatek_bo_map, |
| .bo_unmap = mediatek_bo_unmap, |
| .bo_flush = mediatek_bo_flush, |
| .resolve_format = mediatek_resolve_format, |
| }; |
| |
| #endif |