| /* |
| * Copyright 2018 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_MSM |
| |
| #include <errno.h> |
| #include <msm_drm.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <xf86drm.h> |
| |
| #include "drv_priv.h" |
| #include "helpers.h" |
| #include "util.h" |
| |
| #define DEFAULT_ALIGNMENT 64 |
| #define BUFFER_SIZE_ALIGN 4096 |
| |
| #define VENUS_STRIDE_ALIGN 128 |
| #define VENUS_SCANLINE_ALIGN 16 |
| #define NV12_LINEAR_PADDING (12 * 1024) |
| |
| 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_NV12, DRM_FORMAT_R8, |
| DRM_FORMAT_YVU420, DRM_FORMAT_YVU420_ANDROID }; |
| |
| static void msm_calculate_linear_layout(struct bo *bo) |
| { |
| uint32_t width, height; |
| |
| width = bo->width; |
| height = bo->height; |
| |
| /* NV12 format requires extra padding with platform |
| * specific alignments for venus driver |
| */ |
| if (bo->format == DRM_FORMAT_NV12) { |
| uint32_t y_stride, uv_stride, y_scanline, uv_scanline, y_plane, uv_plane, size; |
| y_stride = ALIGN(width, VENUS_STRIDE_ALIGN); |
| uv_stride = ALIGN(width, VENUS_STRIDE_ALIGN); |
| y_scanline = ALIGN(height, VENUS_SCANLINE_ALIGN * 2); |
| uv_scanline = ALIGN(DIV_ROUND_UP(height, 2), VENUS_SCANLINE_ALIGN); |
| y_plane = y_stride * y_scanline; |
| uv_plane = uv_stride * uv_scanline; |
| |
| bo->strides[0] = y_stride; |
| bo->sizes[0] = y_plane; |
| bo->offsets[1] = y_plane; |
| bo->strides[1] = uv_stride; |
| size = y_plane + uv_plane + NV12_LINEAR_PADDING; |
| bo->total_size = ALIGN(size, BUFFER_SIZE_ALIGN); |
| bo->sizes[1] = bo->total_size - bo->sizes[0]; |
| } else { |
| uint32_t stride, alignw, alignh; |
| |
| alignw = ALIGN(width, DEFAULT_ALIGNMENT); |
| |
| /* HAL_PIXEL_FORMAT_YV12 requires that the buffer's height not be aligned. */ |
| if (bo->format == DRM_FORMAT_YVU420_ANDROID) { |
| alignh = height; |
| } else { |
| alignh = ALIGN(height, DEFAULT_ALIGNMENT); |
| } |
| |
| stride = drv_stride_from_format(bo->format, alignw, 0); |
| |
| /* Calculate size and assign stride, size, offset to each plane based on format */ |
| drv_bo_from_format(bo, stride, alignh, bo->format); |
| } |
| } |
| |
| static int msm_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 | BO_USE_HW_VIDEO_DECODER); |
| |
| /* Android CTS tests require this. */ |
| drv_add_combination(drv, DRM_FORMAT_BGR888, &LINEAR_METADATA, BO_USE_SW_MASK); |
| |
| return drv_modify_linear_combinations(drv); |
| } |
| |
| /* msm_bo_create will create linear buffers for now */ |
| static int msm_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format, |
| uint64_t flags) |
| { |
| struct drm_msm_gem_new req; |
| int ret; |
| size_t i; |
| |
| msm_calculate_linear_layout(bo); |
| |
| memset(&req, 0, sizeof(req)); |
| req.flags = MSM_BO_WC | MSM_BO_SCANOUT; |
| req.size = bo->total_size; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MSM_GEM_NEW, &req); |
| if (ret) { |
| drv_log("DRM_IOCTL_MSM_GEM_NEW failed with %s\n", strerror(errno)); |
| return ret; |
| } |
| |
| /* |
| * Though we use only one plane, we need to set handle for |
| * all planes to pass kernel checks |
| */ |
| for (i = 0; i < bo->num_planes; i++) { |
| bo->handles[i].u32 = req.handle; |
| } |
| |
| return 0; |
| } |
| |
| static void *msm_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags) |
| { |
| int ret; |
| struct drm_msm_gem_info req; |
| |
| memset(&req, 0, sizeof(req)); |
| req.handle = bo->handles[0].u32; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MSM_GEM_INFO, &req); |
| if (ret) { |
| drv_log("DRM_IOCLT_MSM_GEM_INFO failed with %s\n", strerror(errno)); |
| return MAP_FAILED; |
| } |
| vma->length = bo->total_size; |
| |
| return mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd, |
| req.offset); |
| } |
| |
| const struct backend backend_msm = { |
| .name = "msm", |
| .init = msm_init, |
| .bo_create = msm_bo_create, |
| .bo_destroy = drv_gem_bo_destroy, |
| .bo_import = drv_prime_bo_import, |
| .bo_map = msm_bo_map, |
| .bo_unmap = drv_bo_munmap, |
| }; |
| #endif /* DRV_MSM */ |