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/*
* 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)
{
drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
&LINEAR_METADATA, BO_USE_RENDER_MASK);
drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
&LINEAR_METADATA, BO_USE_TEXTURE_MASK);
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 vma *vma, size_t plane, uint32_t map_flags)
{
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, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
gem_map.offset);
vma->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);
vma->priv = priv;
addr = priv->cached_addr;
}
return addr;
}
static int mediatek_bo_unmap(struct bo *bo, struct vma *vma)
{
if (vma->priv) {
struct mediatek_private_map_data *priv = vma->priv;
vma->addr = priv->gem_addr;
free(priv->cached_addr);
free(priv);
vma->priv = NULL;
}
return munmap(vma->addr, vma->length);
}
static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping)
{
struct mediatek_private_map_data *priv = mapping->vma->priv;
if (priv && (mapping->vma->map_flags & BO_MAP_WRITE))
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;
}
}
const 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
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