rockchip.c - chromiumos/platform/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 <rockchip_drm.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/mman.h>
 #include <xf86drm.h>

 #include "drv_priv.h"
 #include "helpers.h"
 #include "util.h"

 static const uint32_t supported_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
 					      DRM_FORMAT_NV12,     DRM_FORMAT_RGB565,
 					      DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888,
 					      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->strides[0] = width_in_blocks * block_width * pixel_size;
 	bo->sizes[0] = total_size;
 	bo->offsets[0] = 0;

 	bo->total_size = total_size;

 	bo->format_modifiers[0] = DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC;

 	return 0;
 }

 static int rockchip_add_kms_item(struct driver *drv, const struct kms_item *item)
 {
 	int ret;
 	uint32_t i;
 	uint64_t flags;
 	struct combination *combo;
 	struct format_metadata metadata;

 	for (i = 0; i < drv->backend->combos.size; i++) {
 		combo = &drv->backend->combos.data[i];
 		if (combo->format == item->format) {
 			if (item->modifier == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC) {
 				flags = BO_USE_RENDERING | BO_USE_SCANOUT | BO_USE_TEXTURE;
 				metadata.modifier = item->modifier;
 				metadata.tiling = 0;
 				metadata.priority = 2;

 				ret = drv_add_combination(drv, item[i].format, &metadata, flags);
 				if (ret)
 					return ret;
 			} else {
 				combo->usage |= item->usage;
 			}
 		}
 	}

 	return 0;
 }

 static int rockchip_init(struct driver *drv)
 {
 	int ret;
 	uint32_t i, num_items;
 	struct kms_item *items;
 	struct format_metadata metadata;

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

 	ret = drv_add_combinations(drv, supported_formats, ARRAY_SIZE(supported_formats), &metadata,
 				   BO_COMMON_USE_MASK);
 	if (ret)
 		return ret;

 	drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
 	drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);

 	items = drv_query_kms(drv, &num_items);
 	if (!items || !num_items)
 		return 0;

 	for (i = 0; i < num_items; i++) {
 		ret = rockchip_add_kms_item(drv, &items[i]);
 		if (ret) {
 			free(items);
 			return ret;
 		}
 	}

 	free(items);
 	return 0;
 }

 static bool has_modifier(const uint64_t *list, uint32_t count, uint64_t modifier)
 {
 	uint32_t i;

 	for (i = 0; i < count; i++)
 		if (list[i] == modifier)
 			return true;

 	return false;
 }

 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(ALIGN(width, 16), 16);
 		uint32_t h_mbs = DIV_ROUND_UP(ALIGN(height, 16), 16);

 		uint32_t aligned_width = w_mbs * 16;
 		uint32_t aligned_height = DIV_ROUND_UP(h_mbs * 16 * 3, 2);

 		drv_bo_from_format(bo, aligned_width, height, format);
 		bo->total_size = bo->strides[0] * aligned_height + w_mbs * h_mbs * 128;
 	} else if (width <= 2560 &&
 		   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 (!has_modifier(modifiers, count, DRM_FORMAT_MOD_NONE)) {
 			errno = EINVAL;
 			fprintf(stderr, "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->total_size;

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

 	if (ret) {
 		fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_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 int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
 			      uint32_t flags)
 {
 	uint64_t modifiers[] = { DRM_FORMAT_MOD_NONE };

 	return rockchip_bo_create_with_modifiers(bo, width, height, format, modifiers,
 						 ARRAY_SIZE(modifiers));
 }

 static void *rockchip_bo_map(struct bo *bo, struct map_info *data, size_t plane)
 {
 	int ret;
 	struct drm_rockchip_gem_map_off gem_map;

 	/* We can only map buffers created with SW access flags, which should
 	 * have no modifiers (ie, not AFBC). */
 	if (bo->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) {
 		fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
 		return MAP_FAILED;
 	}

 	data->length = bo->total_size;

 	return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->drv->fd,
 		    gem_map.offset);
 }

 static uint32_t rockchip_resolve_format(uint32_t format)
 {
 	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_NV12;
 	default:
 		return format;
 	}
 }

 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,
 	.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 <rockchip_drm.h>
	#include <stdbool.h>
	#include <stdio.h>
	#include <string.h>
	#include <sys/mman.h>
	#include <xf86drm.h>

	#include "drv_priv.h"
	#include "helpers.h"
	#include "util.h"

	static const uint32_t supported_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
	DRM_FORMAT_NV12, DRM_FORMAT_RGB565,
	DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888,
	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->strides[0] = width_in_blocks * block_width * pixel_size;
	bo->sizes[0] = total_size;
	bo->offsets[0] = 0;

	bo->total_size = total_size;

	bo->format_modifiers[0] = DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC;

	return 0;
	}

	static int rockchip_add_kms_item(struct driver drv, const struct kms_item item)
	{
	int ret;
	uint32_t i;
	uint64_t flags;
	struct combination *combo;
	struct format_metadata metadata;

	for (i = 0; i < drv->backend->combos.size; i++) {
	combo = &drv->backend->combos.data[i];
	if (combo->format == item->format) {
	if (item->modifier == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC) {
	flags = BO_USE_RENDERING \| BO_USE_SCANOUT \| BO_USE_TEXTURE;
	metadata.modifier = item->modifier;
	metadata.tiling = 0;
	metadata.priority = 2;

	ret = drv_add_combination(drv, item[i].format, &metadata, flags);
	if (ret)
	return ret;
	} else {
	combo->usage \|= item->usage;
	}
	}
	}

	return 0;
	}

	static int rockchip_init(struct driver *drv)
	{
	int ret;
	uint32_t i, num_items;
	struct kms_item *items;
	struct format_metadata metadata;

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

	ret = drv_add_combinations(drv, supported_formats, ARRAY_SIZE(supported_formats), &metadata,
	BO_COMMON_USE_MASK);
	if (ret)
	return ret;

	drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR \| BO_USE_SCANOUT);
	drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR \| BO_USE_SCANOUT);

	items = drv_query_kms(drv, &num_items);
	if (!items \|\| !num_items)
	return 0;

	for (i = 0; i < num_items; i++) {
	ret = rockchip_add_kms_item(drv, &items[i]);
	if (ret) {
	free(items);
	return ret;
	}
	}

	free(items);
	return 0;
	}

	static bool has_modifier(const uint64_t *list, uint32_t count, uint64_t modifier)
	{
	uint32_t i;

	for (i = 0; i < count; i++)
	if (list[i] == modifier)
	return true;

	return false;
	}

	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(ALIGN(width, 16), 16);
	uint32_t h_mbs = DIV_ROUND_UP(ALIGN(height, 16), 16);

	uint32_t aligned_width = w_mbs * 16;
	uint32_t aligned_height = DIV_ROUND_UP(h_mbs * 16 * 3, 2);

	drv_bo_from_format(bo, aligned_width, height, format);
	bo->total_size = bo->strides[0] * aligned_height + w_mbs * h_mbs * 128;
	} else if (width <= 2560 &&
	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 (!has_modifier(modifiers, count, DRM_FORMAT_MOD_NONE)) {
	errno = EINVAL;
	fprintf(stderr, "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->total_size;

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

	if (ret) {
	fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_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 int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
	uint32_t flags)
	{
	uint64_t modifiers[] = { DRM_FORMAT_MOD_NONE };

	return rockchip_bo_create_with_modifiers(bo, width, height, format, modifiers,
	ARRAY_SIZE(modifiers));
	}

	static void rockchip_bo_map(struct bo bo, struct map_info *data, size_t plane)
	{
	int ret;
	struct drm_rockchip_gem_map_off gem_map;

	/* We can only map buffers created with SW access flags, which should
	* have no modifiers (ie, not AFBC). */
	if (bo->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) {
	fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
	return MAP_FAILED;
	}

	data->length = bo->total_size;

	return mmap(0, bo->total_size, PROT_READ \| PROT_WRITE, MAP_SHARED, bo->drv->fd,
	gem_map.offset);
	}

	static uint32_t rockchip_resolve_format(uint32_t format)
	{
	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_NV12;
	default:
	return format;
	}
	}

	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,
	.resolve_format = rockchip_resolve_format,
	};

	#endif