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90 lines
2.2 KiB
90 lines
2.2 KiB
/* |
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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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