/*
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* Copyright 2017 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_VC4
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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 <vc4_drm.h>
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#include <xf86drm.h>
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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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static const uint32_t render_target_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_RGB565,
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DRM_FORMAT_XRGB8888 };
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static int vc4_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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return drv_modify_linear_combinations(drv);
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}
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static int vc4_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_vc4_create_bo bo_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(&bo_create, 0, sizeof(bo_create));
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bo_create.size = bo->total_size;
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ret = drmIoctl(bo->drv->fd, DRM_IOCTL_VC4_CREATE_BO, &bo_create);
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if (ret) {
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drv_log("DRM_IOCTL_VC4_GEM_CREATE failed (size=%zu)\n", bo->total_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 = bo_create.handle;
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return 0;
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}
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static void *vc4_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_vc4_mmap_bo bo_map;
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memset(&bo_map, 0, sizeof(bo_map));
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bo_map.handle = bo->handles[0].u32;
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ret = drmCommandWriteRead(bo->drv->fd, DRM_VC4_MMAP_BO, &bo_map, sizeof(bo_map));
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if (ret) {
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drv_log("DRM_VC4_MMAP_BO failed\n");
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return MAP_FAILED;
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}
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vma->length = bo->total_size;
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return mmap(NULL, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
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bo_map.offset);
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}
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const struct backend backend_vc4 = {
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.name = "vc4",
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.init = vc4_init,
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.bo_create = vc4_bo_create,
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.bo_import = drv_prime_bo_import,
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.bo_destroy = drv_gem_bo_destroy,
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.bo_map = vc4_bo_map,
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.bo_unmap = drv_bo_munmap,
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};
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#endif
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