/*
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* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifdef DRV_MEDIATEK
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// clang-format off
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#include <stdio.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <xf86drm.h>
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#include <mediatek_drm.h>
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// clang-format on
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#include "drv_priv.h"
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#include "helpers.h"
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#include "util.h"
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struct mediatek_private_map_data {
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void *cached_addr;
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void *gem_addr;
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};
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static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
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DRM_FORMAT_BGR888, DRM_FORMAT_RGB565,
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DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888 };
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static const uint32_t texture_source_formats[] = { DRM_FORMAT_R8, DRM_FORMAT_YVU420,
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DRM_FORMAT_YVU420_ANDROID };
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static int mediatek_init(struct driver *drv)
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{
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drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
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&LINEAR_METADATA, BO_USE_RENDER_MASK);
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drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
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&LINEAR_METADATA, BO_USE_TEXTURE_MASK);
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return drv_modify_linear_combinations(drv);
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}
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static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
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uint64_t use_flags)
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{
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int ret;
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size_t plane;
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uint32_t stride;
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struct drm_mtk_gem_create gem_create;
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/*
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* Since the ARM L1 cache line size is 64 bytes, align to that as a
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* performance optimization.
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*/
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stride = drv_stride_from_format(format, width, 0);
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stride = ALIGN(stride, 64);
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drv_bo_from_format(bo, stride, height, format);
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memset(&gem_create, 0, sizeof(gem_create));
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gem_create.size = bo->total_size;
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ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
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if (ret) {
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drv_log("DRM_IOCTL_MTK_GEM_CREATE failed (size=%llu)\n", gem_create.size);
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return ret;
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}
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for (plane = 0; plane < bo->num_planes; plane++)
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bo->handles[plane].u32 = gem_create.handle;
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return 0;
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}
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static void *mediatek_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
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{
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int ret;
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struct drm_mtk_gem_map_off gem_map;
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struct mediatek_private_map_data *priv;
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memset(&gem_map, 0, sizeof(gem_map));
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gem_map.handle = bo->handles[0].u32;
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ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
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if (ret) {
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drv_log("DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
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return MAP_FAILED;
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}
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void *addr = mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
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gem_map.offset);
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vma->length = bo->total_size;
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if (bo->use_flags & BO_USE_RENDERSCRIPT) {
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priv = calloc(1, sizeof(*priv));
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priv->cached_addr = calloc(1, bo->total_size);
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priv->gem_addr = addr;
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vma->priv = priv;
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addr = priv->cached_addr;
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}
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return addr;
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}
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static int mediatek_bo_unmap(struct bo *bo, struct vma *vma)
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{
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if (vma->priv) {
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struct mediatek_private_map_data *priv = vma->priv;
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vma->addr = priv->gem_addr;
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free(priv->cached_addr);
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free(priv);
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vma->priv = NULL;
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}
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return munmap(vma->addr, vma->length);
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}
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static int mediatek_bo_invalidate(struct bo *bo, struct mapping *mapping)
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{
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if (mapping->vma->priv) {
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struct mediatek_private_map_data *priv = mapping->vma->priv;
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memcpy(priv->cached_addr, priv->gem_addr, bo->total_size);
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}
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return 0;
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}
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static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping)
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{
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struct mediatek_private_map_data *priv = mapping->vma->priv;
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if (priv && (mapping->vma->map_flags & BO_MAP_WRITE))
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memcpy(priv->gem_addr, priv->cached_addr, bo->total_size);
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return 0;
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}
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static uint32_t mediatek_resolve_format(uint32_t format, uint64_t use_flags)
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{
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switch (format) {
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case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
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/*HACK: See b/28671744 */
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return DRM_FORMAT_XBGR8888;
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case DRM_FORMAT_FLEX_YCbCr_420_888:
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return DRM_FORMAT_YVU420;
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default:
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return format;
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}
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}
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const struct backend backend_mediatek = {
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.name = "mediatek",
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.init = mediatek_init,
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.bo_create = mediatek_bo_create,
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.bo_destroy = drv_gem_bo_destroy,
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.bo_import = drv_prime_bo_import,
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.bo_map = mediatek_bo_map,
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.bo_unmap = mediatek_bo_unmap,
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.bo_invalidate = mediatek_bo_invalidate,
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.bo_flush = mediatek_bo_flush,
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.resolve_format = mediatek_resolve_format,
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};
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#endif
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