rockchip.c - platform/external/minigbm - Git at Google

 /*
  * Copyright 2014 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_ROCKCHIP

 #include <errno.h>
 #include <inttypes.h>
 #include <rockchip_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"

 struct rockchip_private_map_data {
 	void *cached_addr;
 	void *gem_addr;
 };

 static const uint32_t scanout_render_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
 						   DRM_FORMAT_BGR888,	DRM_FORMAT_RGB565,
 						   DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888 };

 static const uint32_t texture_only_formats[] = { DRM_FORMAT_NV12, DRM_FORMAT_YVU420,
 						 DRM_FORMAT_YVU420_ANDROID };

 static int afbc_bo_from_format(struct bo *bo, uint32_t width, uint32_t height, uint32_t format)
 {
 	/* We've restricted ourselves to four bytes per pixel. */
 	const uint32_t pixel_size = 4;

 	const uint32_t clump_width = 4;
 	const uint32_t clump_height = 4;

 #define AFBC_NARROW 1
 #if AFBC_NARROW == 1
 	const uint32_t block_width = 4 * clump_width;
 	const uint32_t block_height = 4 * clump_height;
 #else
 	const uint32_t block_width = 8 * clump_width;
 	const uint32_t block_height = 2 * clump_height;
 #endif

 	const uint32_t header_block_size = 16;
 	const uint32_t body_block_size = block_width * block_height * pixel_size;
 	const uint32_t width_in_blocks = DIV_ROUND_UP(width, block_width);
 	const uint32_t height_in_blocks = DIV_ROUND_UP(height, block_height);
 	const uint32_t total_blocks = width_in_blocks * height_in_blocks;

 	const uint32_t header_plane_size = total_blocks * header_block_size;
 	const uint32_t body_plane_size = total_blocks * body_block_size;

 	/* GPU requires 64 bytes, but EGL import code expects 1024 byte
 	 * alignement for the body plane. */
 	const uint32_t body_plane_alignment = 1024;

 	const uint32_t body_plane_offset = ALIGN(header_plane_size, body_plane_alignment);
 	const uint32_t total_size = body_plane_offset + body_plane_size;

 	bo->meta.strides[0] = width_in_blocks * block_width * pixel_size;
 	bo->meta.sizes[0] = total_size;
 	bo->meta.offsets[0] = 0;

 	bo->meta.total_size = total_size;

 	bo->meta.format_modifiers[0] = DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC;

 	return 0;
 }

 static int rockchip_init(struct driver *drv)
 {
 	struct format_metadata metadata;

 	metadata.tiling = 0;
 	metadata.priority = 1;
 	metadata.modifier = DRM_FORMAT_MOD_LINEAR;

 	drv_add_combinations(drv, scanout_render_formats, ARRAY_SIZE(scanout_render_formats),
 			     &metadata, BO_USE_RENDER_MASK | BO_USE_SCANOUT);

 	drv_add_combinations(drv, texture_only_formats, ARRAY_SIZE(texture_only_formats), &metadata,
 			     BO_USE_TEXTURE_MASK);

 	/*
 	 * Chrome uses DMA-buf mmap to write to YV12 buffers, which are then accessed by the
 	 * Video Encoder Accelerator (VEA). It could also support NV12 potentially in the future.
 	 */
 	drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata, BO_USE_HW_VIDEO_ENCODER);
 	/* Camera ISP supports only NV12 output. */
 	drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
 			       BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_HW_VIDEO_DECODER |
 				   BO_USE_HW_VIDEO_ENCODER | BO_USE_SCANOUT);

 	drv_modify_linear_combinations(drv);
 	/*
 	 * R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB and is used for JPEG snapshots
 	 * from camera.
 	 */
 	drv_add_combination(drv, DRM_FORMAT_R8, &metadata,
 			    BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SW_MASK |
 				BO_USE_LINEAR | BO_USE_PROTECTED);

 	return 0;
 }

 static int rockchip_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
 					     uint32_t format, const uint64_t *modifiers,
 					     uint32_t count)
 {
 	int ret;
 	size_t plane;
 	struct drm_rockchip_gem_create gem_create;

 	if (format == DRM_FORMAT_NV12) {
 		uint32_t w_mbs = DIV_ROUND_UP(width, 16);
 		uint32_t h_mbs = DIV_ROUND_UP(height, 16);

 		uint32_t aligned_width = w_mbs * 16;
 		uint32_t aligned_height = h_mbs * 16;

 		drv_bo_from_format(bo, aligned_width, aligned_height, format);
 		/*
 		 * drv_bo_from_format updates total_size. Add an extra data space for rockchip video
 		 * driver to store motion vectors.
 		 */
 		bo->meta.total_size += w_mbs * h_mbs * 128;
 	} else if (width <= 2560 &&
 		   drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)) {
 		/* If the caller has decided they can use AFBC, always
 		 * pick that */
 		afbc_bo_from_format(bo, width, height, format);
 	} else {
 		if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
 			errno = EINVAL;
 			drv_log("no usable modifier found\n");
 			return -1;
 		}

 		uint32_t stride;
 		/*
 		 * Since the ARM L1 cache line size is 64 bytes, align to that
 		 * as a performance optimization. For YV12, the Mali cmem allocator
 		 * requires that chroma planes are aligned to 64-bytes, so align the
 		 * luma plane to 128 bytes.
 		 */
 		stride = drv_stride_from_format(format, width, 0);
 		if (format == DRM_FORMAT_YVU420 || format == DRM_FORMAT_YVU420_ANDROID)
 			stride = ALIGN(stride, 128);
 		else
 			stride = ALIGN(stride, 64);

 		drv_bo_from_format(bo, stride, height, format);
 	}

 	memset(&gem_create, 0, sizeof(gem_create));
 	gem_create.size = bo->meta.total_size;

 	ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE, &gem_create);

 	if (ret) {
 		drv_log("DRM_IOCTL_ROCKCHIP_GEM_CREATE failed (size=%" PRIu64 ")\n",
 			gem_create.size);
 		return -errno;
 	}

 	for (plane = 0; plane < bo->meta.num_planes; plane++)
 		bo->handles[plane].u32 = gem_create.handle;

 	return 0;
 }

 static int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
 			      uint64_t use_flags)
 {
 	uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
 	return rockchip_bo_create_with_modifiers(bo, width, height, format, modifiers,
 						 ARRAY_SIZE(modifiers));
 }

 static void *rockchip_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
 {
 	int ret;
 	struct drm_rockchip_gem_map_off gem_map;
 	struct rockchip_private_map_data *priv;

 	/* We can only map buffers created with SW access flags, which should
 	 * have no modifiers (ie, not AFBC). */
 	if (bo->meta.format_modifiers[0] == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)
 		return MAP_FAILED;

 	memset(&gem_map, 0, sizeof(gem_map));
 	gem_map.handle = bo->handles[0].u32;

 	ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET, &gem_map);
 	if (ret) {
 		drv_log("DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
 		return MAP_FAILED;
 	}

 	void *addr = mmap(0, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
 			  gem_map.offset);

 	vma->length = bo->meta.total_size;

 	if (bo->meta.use_flags & BO_USE_RENDERSCRIPT) {
 		priv = calloc(1, sizeof(*priv));
 		priv->cached_addr = calloc(1, bo->meta.total_size);
 		priv->gem_addr = addr;
 		vma->priv = priv;
 		addr = priv->cached_addr;
 	}

 	return addr;
 }

 static int rockchip_bo_unmap(struct bo *bo, struct vma *vma)
 {
 	if (vma->priv) {
 		struct rockchip_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 rockchip_bo_invalidate(struct bo *bo, struct mapping *mapping)
 {
 	if (mapping->vma->priv) {
 		struct rockchip_private_map_data *priv = mapping->vma->priv;
 		memcpy(priv->cached_addr, priv->gem_addr, bo->meta.total_size);
 	}

 	return 0;
 }

 static int rockchip_bo_flush(struct bo *bo, struct mapping *mapping)
 {
 	struct rockchip_private_map_data *priv = mapping->vma->priv;
 	if (priv && (mapping->vma->map_flags & BO_MAP_WRITE))
 		memcpy(priv->gem_addr, priv->cached_addr, bo->meta.total_size);

 	return 0;
 }

 static uint32_t rockchip_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
 {
 	switch (format) {
 	case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 		/* Camera subsystem requires NV12. */
 		if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE))
 			return DRM_FORMAT_NV12;
 		/*HACK: See b/28671744 */
 		return DRM_FORMAT_XBGR8888;
 	case DRM_FORMAT_FLEX_YCbCr_420_888:
 		return DRM_FORMAT_NV12;
 	default:
 		return format;
 	}
 }

 const struct backend backend_rockchip = {
 	.name = "rockchip",
 	.init = rockchip_init,
 	.bo_create = rockchip_bo_create,
 	.bo_create_with_modifiers = rockchip_bo_create_with_modifiers,
 	.bo_destroy = drv_gem_bo_destroy,
 	.bo_import = drv_prime_bo_import,
 	.bo_map = rockchip_bo_map,
 	.bo_unmap = rockchip_bo_unmap,
 	.bo_invalidate = rockchip_bo_invalidate,
 	.bo_flush = rockchip_bo_flush,
 	.resolve_format = rockchip_resolve_format,
 };

 #endif
	/*
	* Copyright 2014 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_ROCKCHIP

	#include <errno.h>
	#include <inttypes.h>
	#include <rockchip_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"

	struct rockchip_private_map_data {
	void *cached_addr;
	void *gem_addr;
	};

	static const uint32_t scanout_render_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
	DRM_FORMAT_BGR888, DRM_FORMAT_RGB565,
	DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888 };

	static const uint32_t texture_only_formats[] = { DRM_FORMAT_NV12, DRM_FORMAT_YVU420,
	DRM_FORMAT_YVU420_ANDROID };

	static int afbc_bo_from_format(struct bo *bo, uint32_t width, uint32_t height, uint32_t format)
	{
	/* We've restricted ourselves to four bytes per pixel. */
	const uint32_t pixel_size = 4;

	const uint32_t clump_width = 4;
	const uint32_t clump_height = 4;

	#define AFBC_NARROW 1
	#if AFBC_NARROW == 1
	const uint32_t block_width = 4 * clump_width;
	const uint32_t block_height = 4 * clump_height;
	#else
	const uint32_t block_width = 8 * clump_width;
	const uint32_t block_height = 2 * clump_height;
	#endif

	const uint32_t header_block_size = 16;
	const uint32_t body_block_size = block_width * block_height * pixel_size;
	const uint32_t width_in_blocks = DIV_ROUND_UP(width, block_width);
	const uint32_t height_in_blocks = DIV_ROUND_UP(height, block_height);
	const uint32_t total_blocks = width_in_blocks * height_in_blocks;

	const uint32_t header_plane_size = total_blocks * header_block_size;
	const uint32_t body_plane_size = total_blocks * body_block_size;

	/* GPU requires 64 bytes, but EGL import code expects 1024 byte
	* alignement for the body plane. */
	const uint32_t body_plane_alignment = 1024;

	const uint32_t body_plane_offset = ALIGN(header_plane_size, body_plane_alignment);
	const uint32_t total_size = body_plane_offset + body_plane_size;

	bo->meta.strides[0] = width_in_blocks * block_width * pixel_size;
	bo->meta.sizes[0] = total_size;
	bo->meta.offsets[0] = 0;

	bo->meta.total_size = total_size;

	bo->meta.format_modifiers[0] = DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC;

	return 0;
	}

	static int rockchip_init(struct driver *drv)
	{
	struct format_metadata metadata;

	metadata.tiling = 0;
	metadata.priority = 1;
	metadata.modifier = DRM_FORMAT_MOD_LINEAR;

	drv_add_combinations(drv, scanout_render_formats, ARRAY_SIZE(scanout_render_formats),
	&metadata, BO_USE_RENDER_MASK \| BO_USE_SCANOUT);

	drv_add_combinations(drv, texture_only_formats, ARRAY_SIZE(texture_only_formats), &metadata,
	BO_USE_TEXTURE_MASK);

	/*
	* Chrome uses DMA-buf mmap to write to YV12 buffers, which are then accessed by the
	* Video Encoder Accelerator (VEA). It could also support NV12 potentially in the future.
	*/
	drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata, BO_USE_HW_VIDEO_ENCODER);
	/* Camera ISP supports only NV12 output. */
	drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
	BO_USE_CAMERA_READ \| BO_USE_CAMERA_WRITE \| BO_USE_HW_VIDEO_DECODER \|
	BO_USE_HW_VIDEO_ENCODER \| BO_USE_SCANOUT);

	drv_modify_linear_combinations(drv);
	/*
	* R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB and is used for JPEG snapshots
	* from camera.
	*/
	drv_add_combination(drv, DRM_FORMAT_R8, &metadata,
	BO_USE_CAMERA_READ \| BO_USE_CAMERA_WRITE \| BO_USE_SW_MASK \|
	BO_USE_LINEAR \| BO_USE_PROTECTED);

	return 0;
	}

	static int rockchip_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
	uint32_t format, const uint64_t *modifiers,
	uint32_t count)
	{
	int ret;
	size_t plane;
	struct drm_rockchip_gem_create gem_create;

	if (format == DRM_FORMAT_NV12) {
	uint32_t w_mbs = DIV_ROUND_UP(width, 16);
	uint32_t h_mbs = DIV_ROUND_UP(height, 16);

	uint32_t aligned_width = w_mbs * 16;
	uint32_t aligned_height = h_mbs * 16;

	drv_bo_from_format(bo, aligned_width, aligned_height, format);
	/*
	* drv_bo_from_format updates total_size. Add an extra data space for rockchip video
	* driver to store motion vectors.
	*/
	bo->meta.total_size += w_mbs * h_mbs * 128;
	} else if (width <= 2560 &&
	drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)) {
	/* If the caller has decided they can use AFBC, always
	* pick that */
	afbc_bo_from_format(bo, width, height, format);
	} else {
	if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
	errno = EINVAL;
	drv_log("no usable modifier found\n");
	return -1;
	}

	uint32_t stride;
	/*
	* Since the ARM L1 cache line size is 64 bytes, align to that
	* as a performance optimization. For YV12, the Mali cmem allocator
	* requires that chroma planes are aligned to 64-bytes, so align the
	* luma plane to 128 bytes.
	*/
	stride = drv_stride_from_format(format, width, 0);
	if (format == DRM_FORMAT_YVU420 \|\| format == DRM_FORMAT_YVU420_ANDROID)
	stride = ALIGN(stride, 128);
	else
	stride = ALIGN(stride, 64);

	drv_bo_from_format(bo, stride, height, format);
	}

	memset(&gem_create, 0, sizeof(gem_create));
	gem_create.size = bo->meta.total_size;

	ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE, &gem_create);

	if (ret) {
	drv_log("DRM_IOCTL_ROCKCHIP_GEM_CREATE failed (size=%" PRIu64 ")\n",
	gem_create.size);
	return -errno;
	}

	for (plane = 0; plane < bo->meta.num_planes; plane++)
	bo->handles[plane].u32 = gem_create.handle;

	return 0;
	}

	static int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
	uint64_t use_flags)
	{
	uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
	return rockchip_bo_create_with_modifiers(bo, width, height, format, modifiers,
	ARRAY_SIZE(modifiers));
	}

	static void rockchip_bo_map(struct bo bo, struct vma *vma, size_t plane, uint32_t map_flags)
	{
	int ret;
	struct drm_rockchip_gem_map_off gem_map;
	struct rockchip_private_map_data *priv;

	/* We can only map buffers created with SW access flags, which should
	* have no modifiers (ie, not AFBC). */
	if (bo->meta.format_modifiers[0] == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)
	return MAP_FAILED;

	memset(&gem_map, 0, sizeof(gem_map));
	gem_map.handle = bo->handles[0].u32;

	ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET, &gem_map);
	if (ret) {
	drv_log("DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
	return MAP_FAILED;
	}

	void *addr = mmap(0, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
	gem_map.offset);

	vma->length = bo->meta.total_size;

	if (bo->meta.use_flags & BO_USE_RENDERSCRIPT) {
	priv = calloc(1, sizeof(*priv));
	priv->cached_addr = calloc(1, bo->meta.total_size);
	priv->gem_addr = addr;
	vma->priv = priv;
	addr = priv->cached_addr;
	}

	return addr;
	}

	static int rockchip_bo_unmap(struct bo bo, struct vma vma)
	{
	if (vma->priv) {
	struct rockchip_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 rockchip_bo_invalidate(struct bo bo, struct mapping mapping)
	{
	if (mapping->vma->priv) {
	struct rockchip_private_map_data *priv = mapping->vma->priv;
	memcpy(priv->cached_addr, priv->gem_addr, bo->meta.total_size);
	}

	return 0;
	}

	static int rockchip_bo_flush(struct bo bo, struct mapping mapping)
	{
	struct rockchip_private_map_data *priv = mapping->vma->priv;
	if (priv && (mapping->vma->map_flags & BO_MAP_WRITE))
	memcpy(priv->gem_addr, priv->cached_addr, bo->meta.total_size);

	return 0;
	}

	static uint32_t rockchip_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
	{
	switch (format) {
	case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
	/* Camera subsystem requires NV12. */
	if (use_flags & (BO_USE_CAMERA_READ \| BO_USE_CAMERA_WRITE))
	return DRM_FORMAT_NV12;
	/HACK: See b/28671744 /
	return DRM_FORMAT_XBGR8888;
	case DRM_FORMAT_FLEX_YCbCr_420_888:
	return DRM_FORMAT_NV12;
	default:
	return format;
	}
	}

	const struct backend backend_rockchip = {
	.name = "rockchip",
	.init = rockchip_init,
	.bo_create = rockchip_bo_create,
	.bo_create_with_modifiers = rockchip_bo_create_with_modifiers,
	.bo_destroy = drv_gem_bo_destroy,
	.bo_import = drv_prime_bo_import,
	.bo_map = rockchip_bo_map,
	.bo_unmap = rockchip_bo_unmap,
	.bo_invalidate = rockchip_bo_invalidate,
	.bo_flush = rockchip_bo_flush,
	.resolve_format = rockchip_resolve_format,
	};

	#endif