amdgpu.c - chromiumos/platform/minigbm - Git at Google

 /*
  * Copyright 2016 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_AMDGPU
 #include <amdgpu.h>
 #include <amdgpu_drm.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/mman.h>
 #include <xf86drm.h>

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

 #ifndef CIASICIDGFXENGINE_SOUTHERNISLAND
 #define CIASICIDGFXENGINE_SOUTHERNISLAND 0x0000000A
 #endif

 // clang-format off
 #define mmCC_RB_BACKEND_DISABLE		0x263d
 #define mmGB_TILE_MODE0			0x2644
 #define mmGB_MACROTILE_MODE0		0x2664
 #define mmGB_ADDR_CONFIG		0x263e
 #define mmMC_ARB_RAMCFG			0x9d8

 enum {
 	FAMILY_UNKNOWN,
 	FAMILY_SI,
 	FAMILY_CI,
 	FAMILY_KV,
 	FAMILY_VI,
 	FAMILY_CZ,
 	FAMILY_PI,
 	FAMILY_LAST,
 };
 // clang-format on

 struct amdgpu_priv {
 	void *addrlib;
 	int drm_version;
 };

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

 const static uint32_t texture_source_formats[] = { DRM_FORMAT_GR88, DRM_FORMAT_R8, DRM_FORMAT_NV21,
 						   DRM_FORMAT_NV12, DRM_FORMAT_YVU420_ANDROID };

 static int amdgpu_set_metadata(int fd, uint32_t handle, struct amdgpu_bo_metadata *info)
 {
 	struct drm_amdgpu_gem_metadata args = { 0 };

 	if (!info)
 		return -EINVAL;

 	args.handle = handle;
 	args.op = AMDGPU_GEM_METADATA_OP_SET_METADATA;
 	args.data.flags = info->flags;
 	args.data.tiling_info = info->tiling_info;

 	if (info->size_metadata > sizeof(args.data.data))
 		return -EINVAL;

 	if (info->size_metadata) {
 		args.data.data_size_bytes = info->size_metadata;
 		memcpy(args.data.data, info->umd_metadata, info->size_metadata);
 	}

 	return drmCommandWriteRead(fd, DRM_AMDGPU_GEM_METADATA, &args, sizeof(args));
 }

 static int amdgpu_read_mm_regs(int fd, unsigned dword_offset, unsigned count, uint32_t instance,
 			       uint32_t flags, uint32_t *values)
 {
 	struct drm_amdgpu_info request;

 	memset(&request, 0, sizeof(request));
 	request.return_pointer = (uintptr_t)values;
 	request.return_size = count * sizeof(uint32_t);
 	request.query = AMDGPU_INFO_READ_MMR_REG;
 	request.read_mmr_reg.dword_offset = dword_offset;
 	request.read_mmr_reg.count = count;
 	request.read_mmr_reg.instance = instance;
 	request.read_mmr_reg.flags = flags;

 	return drmCommandWrite(fd, DRM_AMDGPU_INFO, &request, sizeof(struct drm_amdgpu_info));
 }

 static int amdgpu_query_gpu(int fd, struct amdgpu_gpu_info *gpu_info)
 {
 	int ret;
 	uint32_t instance;

 	if (!gpu_info)
 		return -EINVAL;

 	instance = AMDGPU_INFO_MMR_SH_INDEX_MASK << AMDGPU_INFO_MMR_SH_INDEX_SHIFT;

 	ret = amdgpu_read_mm_regs(fd, mmCC_RB_BACKEND_DISABLE, 1, instance, 0,
 				  &gpu_info->backend_disable[0]);
 	if (ret)
 		return ret;
 	/* extract bitfield CC_RB_BACKEND_DISABLE.BACKEND_DISABLE */
 	gpu_info->backend_disable[0] = (gpu_info->backend_disable[0] >> 16) & 0xff;

 	ret = amdgpu_read_mm_regs(fd, mmGB_TILE_MODE0, 32, 0xffffffff, 0, gpu_info->gb_tile_mode);
 	if (ret)
 		return ret;

 	ret = amdgpu_read_mm_regs(fd, mmGB_MACROTILE_MODE0, 16, 0xffffffff, 0,
 				  gpu_info->gb_macro_tile_mode);
 	if (ret)
 		return ret;

 	ret = amdgpu_read_mm_regs(fd, mmGB_ADDR_CONFIG, 1, 0xffffffff, 0, &gpu_info->gb_addr_cfg);
 	if (ret)
 		return ret;

 	ret = amdgpu_read_mm_regs(fd, mmMC_ARB_RAMCFG, 1, 0xffffffff, 0, &gpu_info->mc_arb_ramcfg);
 	if (ret)
 		return ret;

 	return 0;
 }

 static void *ADDR_API alloc_sys_mem(const ADDR_ALLOCSYSMEM_INPUT *in)
 {
 	return malloc(in->sizeInBytes);
 }

 static ADDR_E_RETURNCODE ADDR_API free_sys_mem(const ADDR_FREESYSMEM_INPUT *in)
 {
 	free(in->pVirtAddr);
 	return ADDR_OK;
 }

 static int amdgpu_addrlib_compute(void *addrlib, uint32_t width, uint32_t height, uint32_t format,
 				  uint64_t use_flags, uint32_t *tiling_flags,
 				  ADDR_COMPUTE_SURFACE_INFO_OUTPUT *addr_out)
 {
 	ADDR_COMPUTE_SURFACE_INFO_INPUT addr_surf_info_in = { 0 };
 	ADDR_TILEINFO addr_tile_info = { 0 };
 	ADDR_TILEINFO addr_tile_info_out = { 0 };
 	uint32_t bits_per_pixel;

 	addr_surf_info_in.size = sizeof(ADDR_COMPUTE_SURFACE_INFO_INPUT);

 	/* Set the requested tiling mode. */
 	addr_surf_info_in.tileMode = ADDR_TM_2D_TILED_THIN1;
 	if (use_flags &
 	    (BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN))
 		addr_surf_info_in.tileMode = ADDR_TM_LINEAR_ALIGNED;
 	else if (width <= 16 || height <= 16)
 		addr_surf_info_in.tileMode = ADDR_TM_1D_TILED_THIN1;

 	bits_per_pixel = drv_stride_from_format(format, 1, 0) * 8;
 	/* Bits per pixel should be calculated from format*/
 	addr_surf_info_in.bpp = bits_per_pixel;
 	addr_surf_info_in.numSamples = 1;
 	addr_surf_info_in.width = width;
 	addr_surf_info_in.height = height;
 	addr_surf_info_in.numSlices = 1;
 	addr_surf_info_in.pTileInfo = &addr_tile_info;
 	addr_surf_info_in.tileIndex = -1;

 	/* This disables incorrect calculations (hacks) in addrlib. */
 	addr_surf_info_in.flags.noStencil = 1;

 	/* Set the micro tile type. */
 	if (use_flags & BO_USE_SCANOUT)
 		addr_surf_info_in.tileType = ADDR_DISPLAYABLE;
 	else
 		addr_surf_info_in.tileType = ADDR_NON_DISPLAYABLE;

 	addr_out->size = sizeof(ADDR_COMPUTE_SURFACE_INFO_OUTPUT);
 	addr_out->pTileInfo = &addr_tile_info_out;

 	if (AddrComputeSurfaceInfo(addrlib, &addr_surf_info_in, addr_out) != ADDR_OK)
 		return -EINVAL;

 	ADDR_CONVERT_TILEINFOTOHW_INPUT s_in = { 0 };
 	ADDR_CONVERT_TILEINFOTOHW_OUTPUT s_out = { 0 };
 	ADDR_TILEINFO s_tile_hw_info_out = { 0 };

 	s_in.size = sizeof(ADDR_CONVERT_TILEINFOTOHW_INPUT);
 	/* Convert from real value to HW value */
 	s_in.reverse = 0;
 	s_in.pTileInfo = &addr_tile_info_out;
 	s_in.tileIndex = -1;

 	s_out.size = sizeof(ADDR_CONVERT_TILEINFOTOHW_OUTPUT);
 	s_out.pTileInfo = &s_tile_hw_info_out;

 	if (AddrConvertTileInfoToHW(addrlib, &s_in, &s_out) != ADDR_OK)
 		return -EINVAL;

 	if (addr_out->tileMode >= ADDR_TM_2D_TILED_THIN1)
 		/* 2D_TILED_THIN1 */
 		*tiling_flags |= AMDGPU_TILING_SET(ARRAY_MODE, 4);
 	else if (addr_out->tileMode >= ADDR_TM_1D_TILED_THIN1)
 		/* 1D_TILED_THIN1 */
 		*tiling_flags |= AMDGPU_TILING_SET(ARRAY_MODE, 2);
 	else
 		/* LINEAR_ALIGNED */
 		*tiling_flags |= AMDGPU_TILING_SET(ARRAY_MODE, 1);

 	*tiling_flags |= AMDGPU_TILING_SET(BANK_WIDTH, drv_log_base2(addr_tile_info_out.bankWidth));
 	*tiling_flags |=
 	    AMDGPU_TILING_SET(BANK_HEIGHT, drv_log_base2(addr_tile_info_out.bankHeight));
 	*tiling_flags |= AMDGPU_TILING_SET(TILE_SPLIT, s_tile_hw_info_out.tileSplitBytes);
 	*tiling_flags |= AMDGPU_TILING_SET(MACRO_TILE_ASPECT,
 					   drv_log_base2(addr_tile_info_out.macroAspectRatio));
 	*tiling_flags |= AMDGPU_TILING_SET(PIPE_CONFIG, s_tile_hw_info_out.pipeConfig);
 	*tiling_flags |= AMDGPU_TILING_SET(NUM_BANKS, s_tile_hw_info_out.banks);

 	return 0;
 }

 static void *amdgpu_addrlib_init(int fd)
 {
 	int ret;
 	ADDR_CREATE_INPUT addr_create_input = { 0 };
 	ADDR_CREATE_OUTPUT addr_create_output = { 0 };
 	ADDR_REGISTER_VALUE reg_value = { 0 };
 	ADDR_CREATE_FLAGS create_flags = { { 0 } };
 	ADDR_E_RETURNCODE addr_ret;

 	addr_create_input.size = sizeof(ADDR_CREATE_INPUT);
 	addr_create_output.size = sizeof(ADDR_CREATE_OUTPUT);

 	struct amdgpu_gpu_info gpu_info = { 0 };

 	ret = amdgpu_query_gpu(fd, &gpu_info);

 	if (ret) {
 		drv_log("failed with error =%d\n", ret);
 		return NULL;
 	}

 	reg_value.noOfBanks = gpu_info.mc_arb_ramcfg & 0x3;
 	reg_value.gbAddrConfig = gpu_info.gb_addr_cfg;
 	reg_value.noOfRanks = (gpu_info.mc_arb_ramcfg & 0x4) >> 2;

 	reg_value.backendDisables = gpu_info.backend_disable[0];
 	reg_value.pTileConfig = gpu_info.gb_tile_mode;
 	reg_value.noOfEntries = sizeof(gpu_info.gb_tile_mode) / sizeof(gpu_info.gb_tile_mode[0]);
 	reg_value.pMacroTileConfig = gpu_info.gb_macro_tile_mode;
 	reg_value.noOfMacroEntries =
 	    sizeof(gpu_info.gb_macro_tile_mode) / sizeof(gpu_info.gb_macro_tile_mode[0]);
 	create_flags.value = 0;
 	create_flags.useTileIndex = 1;

 	addr_create_input.chipEngine = CIASICIDGFXENGINE_SOUTHERNISLAND;

 	addr_create_input.chipFamily = FAMILY_CZ;
 	addr_create_input.createFlags = create_flags;
 	addr_create_input.callbacks.allocSysMem = alloc_sys_mem;
 	addr_create_input.callbacks.freeSysMem = free_sys_mem;
 	addr_create_input.callbacks.debugPrint = 0;
 	addr_create_input.regValue = reg_value;

 	addr_ret = AddrCreate(&addr_create_input, &addr_create_output);

 	if (addr_ret != ADDR_OK) {
 		drv_log("failed error =%d\n", addr_ret);
 		return NULL;
 	}

 	return addr_create_output.hLib;
 }

 static int amdgpu_init(struct driver *drv)
 {
 	struct amdgpu_priv *priv;
 	drmVersionPtr drm_version;
 	struct format_metadata metadata;
 	uint64_t use_flags = BO_USE_RENDER_MASK;

 	priv = calloc(1, sizeof(struct amdgpu_priv));
 	if (!priv)
 		return -1;

 	drm_version = drmGetVersion(drv_get_fd(drv));
 	if (!drm_version) {
 		free(priv);
 		return -1;
 	}

 	priv->drm_version = drm_version->version_minor;
 	drmFreeVersion(drm_version);

 	priv->addrlib = amdgpu_addrlib_init(drv_get_fd(drv));
 	if (!priv->addrlib) {
 		free(priv);
 		return -1;
 	}

 	drv->priv = priv;

 	drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
 			     &LINEAR_METADATA, BO_USE_TEXTURE_MASK);

 	/* YUV format for camera */
 	drv_modify_combination(drv, DRM_FORMAT_NV12, &LINEAR_METADATA,
 			       BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
 	/*
 	 * R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB and is used for JPEG snapshots
 	 * from camera.
 	 */
 	drv_modify_combination(drv, DRM_FORMAT_R8, &LINEAR_METADATA,
 			       BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);

 	drv_modify_combination(drv, DRM_FORMAT_NV21, &LINEAR_METADATA, BO_USE_SCANOUT);
 	drv_modify_combination(drv, DRM_FORMAT_NV12, &LINEAR_METADATA, BO_USE_SCANOUT);

 	metadata.tiling = ADDR_DISPLAYABLE << 16 | ADDR_TM_LINEAR_ALIGNED;
 	metadata.priority = 2;
 	metadata.modifier = DRM_FORMAT_MOD_LINEAR;

 	drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
 			     &metadata, use_flags);

 	drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
 	drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
 	drv_modify_combination(drv, DRM_FORMAT_XBGR8888, &metadata, BO_USE_SCANOUT);

 	metadata.tiling = ADDR_NON_DISPLAYABLE << 16 | ADDR_TM_LINEAR_ALIGNED;
 	metadata.priority = 3;
 	metadata.modifier = DRM_FORMAT_MOD_LINEAR;

 	drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
 			     &metadata, use_flags);

 	use_flags &= ~BO_USE_SW_WRITE_OFTEN;
 	use_flags &= ~BO_USE_SW_READ_OFTEN;
 	use_flags &= ~BO_USE_LINEAR;

 	metadata.tiling = ADDR_DISPLAYABLE << 16 | ADDR_TM_2D_TILED_THIN1;
 	metadata.priority = 4;

 	drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
 			     &metadata, use_flags);

 	drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_SCANOUT);
 	drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_SCANOUT);
 	drv_modify_combination(drv, DRM_FORMAT_XBGR8888, &metadata, BO_USE_SCANOUT);

 	metadata.tiling = ADDR_NON_DISPLAYABLE << 16 | ADDR_TM_2D_TILED_THIN1;
 	metadata.priority = 5;

 	drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
 			     &metadata, use_flags);

 	return 0;
 }

 static void amdgpu_close(struct driver *drv)
 {
 	struct amdgpu_priv *priv = (struct amdgpu_priv *)drv->priv;
 	AddrDestroy(priv->addrlib);
 	free(priv);
 	drv->priv = NULL;
 }

 static int amdgpu_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
 			    uint64_t use_flags)
 {
 	struct amdgpu_priv *priv = (struct amdgpu_priv *)bo->drv->priv;
 	void *addrlib = priv->addrlib;
 	union drm_amdgpu_gem_create gem_create;
 	struct amdgpu_bo_metadata metadata = { 0 };
 	ADDR_COMPUTE_SURFACE_INFO_OUTPUT addr_out = { 0 };
 	uint32_t tiling_flags = 0;
 	size_t plane;
 	int ret;

 	if (format == DRM_FORMAT_NV12 || format == DRM_FORMAT_NV21) {
 		drv_bo_from_format(bo, ALIGN(width, 64), height, format);
 	} else if (format == DRM_FORMAT_YVU420_ANDROID) {
 		drv_bo_from_format(bo, ALIGN(width, 128), height, format);
 	} else {
 		if (amdgpu_addrlib_compute(addrlib, width, height, format, use_flags, &tiling_flags,
 					   &addr_out) < 0)
 			return -EINVAL;

 		bo->tiling = tiling_flags;
 		/* RGB has 1 plane only */
 		bo->offsets[0] = 0;
 		bo->total_size = bo->sizes[0] = addr_out.surfSize;
 		bo->strides[0] = addr_out.pixelPitch * DIV_ROUND_UP(addr_out.pixelBits, 8);
 	}

 	memset(&gem_create, 0, sizeof(gem_create));

 	gem_create.in.bo_size = bo->total_size;
 	gem_create.in.alignment = addr_out.baseAlign;
 	/* Set the placement. */

 	gem_create.in.domain_flags = 0;
 	if (use_flags & (BO_USE_LINEAR | BO_USE_SW))
 		gem_create.in.domain_flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;

 	if (use_flags & (BO_USE_SCANOUT | BO_USE_CURSOR)) {
 		/* TODO(dbehr) do not use VRAM after we enable display VM */
 		gem_create.in.domains = AMDGPU_GEM_DOMAIN_VRAM;
 	} else {
 		gem_create.in.domains = AMDGPU_GEM_DOMAIN_GTT;
 		if (!(use_flags & BO_USE_SW_READ_OFTEN))
 			gem_create.in.domain_flags |= AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 	}

 	/* If drm_version >= 21 everything exposes explicit synchronization primitives
 	   and chromeos/arc++ will use them. Disable implicit synchronization. */
 	if (priv->drm_version >= 21) {
 		gem_create.in.domain_flags |= AMDGPU_GEM_CREATE_EXPLICIT_SYNC;
 	}

 	/* Allocate the buffer with the preferred heap. */
 	ret = drmCommandWriteRead(drv_get_fd(bo->drv), DRM_AMDGPU_GEM_CREATE, &gem_create,
 				  sizeof(gem_create));

 	if (ret < 0)
 		return ret;

 	metadata.tiling_info = tiling_flags;

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

 	ret = amdgpu_set_metadata(drv_get_fd(bo->drv), bo->handles[0].u32, &metadata);

 	return ret;
 }

 static void *amdgpu_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
 {
 	int ret;
 	union drm_amdgpu_gem_mmap gem_map;

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

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

 	vma->length = bo->total_size;

 	return mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
 		    gem_map.out.addr_ptr);
 }

 static uint32_t amdgpu_resolve_format(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_amdgpu = {
 	.name = "amdgpu",
 	.init = amdgpu_init,
 	.close = amdgpu_close,
 	.bo_create = amdgpu_bo_create,
 	.bo_destroy = drv_gem_bo_destroy,
 	.bo_import = drv_prime_bo_import,
 	.bo_map = amdgpu_bo_map,
 	.bo_unmap = drv_bo_munmap,
 	.resolve_format = amdgpu_resolve_format,
 };

 #endif
	/*
	* Copyright 2016 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_AMDGPU
	#include <amdgpu.h>
	#include <amdgpu_drm.h>
	#include <errno.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <sys/mman.h>
	#include <xf86drm.h>

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

	#ifndef CIASICIDGFXENGINE_SOUTHERNISLAND
	#define CIASICIDGFXENGINE_SOUTHERNISLAND 0x0000000A
	#endif

	// clang-format off
	#define mmCC_RB_BACKEND_DISABLE 0x263d
	#define mmGB_TILE_MODE0 0x2644
	#define mmGB_MACROTILE_MODE0 0x2664
	#define mmGB_ADDR_CONFIG 0x263e
	#define mmMC_ARB_RAMCFG 0x9d8

	enum {
	FAMILY_UNKNOWN,
	FAMILY_SI,
	FAMILY_CI,
	FAMILY_KV,
	FAMILY_VI,
	FAMILY_CZ,
	FAMILY_PI,
	FAMILY_LAST,
	};
	// clang-format on

	struct amdgpu_priv {
	void *addrlib;
	int drm_version;
	};

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

	const static uint32_t texture_source_formats[] = { DRM_FORMAT_GR88, DRM_FORMAT_R8, DRM_FORMAT_NV21,
	DRM_FORMAT_NV12, DRM_FORMAT_YVU420_ANDROID };

	static int amdgpu_set_metadata(int fd, uint32_t handle, struct amdgpu_bo_metadata *info)
	{
	struct drm_amdgpu_gem_metadata args = { 0 };

	if (!info)
	return -EINVAL;

	args.handle = handle;
	args.op = AMDGPU_GEM_METADATA_OP_SET_METADATA;
	args.data.flags = info->flags;
	args.data.tiling_info = info->tiling_info;

	if (info->size_metadata > sizeof(args.data.data))
	return -EINVAL;

	if (info->size_metadata) {
	args.data.data_size_bytes = info->size_metadata;
	memcpy(args.data.data, info->umd_metadata, info->size_metadata);
	}

	return drmCommandWriteRead(fd, DRM_AMDGPU_GEM_METADATA, &args, sizeof(args));
	}

	static int amdgpu_read_mm_regs(int fd, unsigned dword_offset, unsigned count, uint32_t instance,
	uint32_t flags, uint32_t *values)
	{
	struct drm_amdgpu_info request;

	memset(&request, 0, sizeof(request));
	request.return_pointer = (uintptr_t)values;
	request.return_size = count * sizeof(uint32_t);
	request.query = AMDGPU_INFO_READ_MMR_REG;
	request.read_mmr_reg.dword_offset = dword_offset;
	request.read_mmr_reg.count = count;
	request.read_mmr_reg.instance = instance;
	request.read_mmr_reg.flags = flags;

	return drmCommandWrite(fd, DRM_AMDGPU_INFO, &request, sizeof(struct drm_amdgpu_info));
	}

	static int amdgpu_query_gpu(int fd, struct amdgpu_gpu_info *gpu_info)
	{
	int ret;
	uint32_t instance;

	if (!gpu_info)
	return -EINVAL;

	instance = AMDGPU_INFO_MMR_SH_INDEX_MASK << AMDGPU_INFO_MMR_SH_INDEX_SHIFT;

	ret = amdgpu_read_mm_regs(fd, mmCC_RB_BACKEND_DISABLE, 1, instance, 0,
	&gpu_info->backend_disable[0]);
	if (ret)
	return ret;
	/* extract bitfield CC_RB_BACKEND_DISABLE.BACKEND_DISABLE */
	gpu_info->backend_disable[0] = (gpu_info->backend_disable[0] >> 16) & 0xff;

	ret = amdgpu_read_mm_regs(fd, mmGB_TILE_MODE0, 32, 0xffffffff, 0, gpu_info->gb_tile_mode);
	if (ret)
	return ret;

	ret = amdgpu_read_mm_regs(fd, mmGB_MACROTILE_MODE0, 16, 0xffffffff, 0,
	gpu_info->gb_macro_tile_mode);
	if (ret)
	return ret;

	ret = amdgpu_read_mm_regs(fd, mmGB_ADDR_CONFIG, 1, 0xffffffff, 0, &gpu_info->gb_addr_cfg);
	if (ret)
	return ret;

	ret = amdgpu_read_mm_regs(fd, mmMC_ARB_RAMCFG, 1, 0xffffffff, 0, &gpu_info->mc_arb_ramcfg);
	if (ret)
	return ret;

	return 0;
	}

	static void ADDR_API alloc_sys_mem(const ADDR_ALLOCSYSMEM_INPUT in)
	{
	return malloc(in->sizeInBytes);
	}

	static ADDR_E_RETURNCODE ADDR_API free_sys_mem(const ADDR_FREESYSMEM_INPUT *in)
	{
	free(in->pVirtAddr);
	return ADDR_OK;
	}

	static int amdgpu_addrlib_compute(void *addrlib, uint32_t width, uint32_t height, uint32_t format,
	uint64_t use_flags, uint32_t *tiling_flags,
	ADDR_COMPUTE_SURFACE_INFO_OUTPUT *addr_out)
	{
	ADDR_COMPUTE_SURFACE_INFO_INPUT addr_surf_info_in = { 0 };
	ADDR_TILEINFO addr_tile_info = { 0 };
	ADDR_TILEINFO addr_tile_info_out = { 0 };
	uint32_t bits_per_pixel;

	addr_surf_info_in.size = sizeof(ADDR_COMPUTE_SURFACE_INFO_INPUT);

	/* Set the requested tiling mode. */
	addr_surf_info_in.tileMode = ADDR_TM_2D_TILED_THIN1;
	if (use_flags &
	(BO_USE_CURSOR \| BO_USE_LINEAR \| BO_USE_SW_READ_OFTEN \| BO_USE_SW_WRITE_OFTEN))
	addr_surf_info_in.tileMode = ADDR_TM_LINEAR_ALIGNED;
	else if (width <= 16 \|\| height <= 16)
	addr_surf_info_in.tileMode = ADDR_TM_1D_TILED_THIN1;

	bits_per_pixel = drv_stride_from_format(format, 1, 0) * 8;
	/* Bits per pixel should be calculated from format*/
	addr_surf_info_in.bpp = bits_per_pixel;
	addr_surf_info_in.numSamples = 1;
	addr_surf_info_in.width = width;
	addr_surf_info_in.height = height;
	addr_surf_info_in.numSlices = 1;
	addr_surf_info_in.pTileInfo = &addr_tile_info;
	addr_surf_info_in.tileIndex = -1;

	/* This disables incorrect calculations (hacks) in addrlib. */
	addr_surf_info_in.flags.noStencil = 1;

	/* Set the micro tile type. */
	if (use_flags & BO_USE_SCANOUT)
	addr_surf_info_in.tileType = ADDR_DISPLAYABLE;
	else
	addr_surf_info_in.tileType = ADDR_NON_DISPLAYABLE;

	addr_out->size = sizeof(ADDR_COMPUTE_SURFACE_INFO_OUTPUT);
	addr_out->pTileInfo = &addr_tile_info_out;

	if (AddrComputeSurfaceInfo(addrlib, &addr_surf_info_in, addr_out) != ADDR_OK)
	return -EINVAL;

	ADDR_CONVERT_TILEINFOTOHW_INPUT s_in = { 0 };
	ADDR_CONVERT_TILEINFOTOHW_OUTPUT s_out = { 0 };
	ADDR_TILEINFO s_tile_hw_info_out = { 0 };

	s_in.size = sizeof(ADDR_CONVERT_TILEINFOTOHW_INPUT);
	/* Convert from real value to HW value */
	s_in.reverse = 0;
	s_in.pTileInfo = &addr_tile_info_out;
	s_in.tileIndex = -1;

	s_out.size = sizeof(ADDR_CONVERT_TILEINFOTOHW_OUTPUT);
	s_out.pTileInfo = &s_tile_hw_info_out;

	if (AddrConvertTileInfoToHW(addrlib, &s_in, &s_out) != ADDR_OK)
	return -EINVAL;

	if (addr_out->tileMode >= ADDR_TM_2D_TILED_THIN1)
	/* 2D_TILED_THIN1 */
	*tiling_flags \|= AMDGPU_TILING_SET(ARRAY_MODE, 4);
	else if (addr_out->tileMode >= ADDR_TM_1D_TILED_THIN1)
	/* 1D_TILED_THIN1 */
	*tiling_flags \|= AMDGPU_TILING_SET(ARRAY_MODE, 2);
	else
	/* LINEAR_ALIGNED */
	*tiling_flags \|= AMDGPU_TILING_SET(ARRAY_MODE, 1);

	*tiling_flags \|= AMDGPU_TILING_SET(BANK_WIDTH, drv_log_base2(addr_tile_info_out.bankWidth));
	*tiling_flags \|=
	AMDGPU_TILING_SET(BANK_HEIGHT, drv_log_base2(addr_tile_info_out.bankHeight));
	*tiling_flags \|= AMDGPU_TILING_SET(TILE_SPLIT, s_tile_hw_info_out.tileSplitBytes);
	*tiling_flags \|= AMDGPU_TILING_SET(MACRO_TILE_ASPECT,
	drv_log_base2(addr_tile_info_out.macroAspectRatio));
	*tiling_flags \|= AMDGPU_TILING_SET(PIPE_CONFIG, s_tile_hw_info_out.pipeConfig);
	*tiling_flags \|= AMDGPU_TILING_SET(NUM_BANKS, s_tile_hw_info_out.banks);

	return 0;
	}

	static void *amdgpu_addrlib_init(int fd)
	{
	int ret;
	ADDR_CREATE_INPUT addr_create_input = { 0 };
	ADDR_CREATE_OUTPUT addr_create_output = { 0 };
	ADDR_REGISTER_VALUE reg_value = { 0 };
	ADDR_CREATE_FLAGS create_flags = { { 0 } };
	ADDR_E_RETURNCODE addr_ret;

	addr_create_input.size = sizeof(ADDR_CREATE_INPUT);
	addr_create_output.size = sizeof(ADDR_CREATE_OUTPUT);

	struct amdgpu_gpu_info gpu_info = { 0 };

	ret = amdgpu_query_gpu(fd, &gpu_info);

	if (ret) {
	drv_log("failed with error =%d\n", ret);
	return NULL;
	}

	reg_value.noOfBanks = gpu_info.mc_arb_ramcfg & 0x3;
	reg_value.gbAddrConfig = gpu_info.gb_addr_cfg;
	reg_value.noOfRanks = (gpu_info.mc_arb_ramcfg & 0x4) >> 2;

	reg_value.backendDisables = gpu_info.backend_disable[0];
	reg_value.pTileConfig = gpu_info.gb_tile_mode;
	reg_value.noOfEntries = sizeof(gpu_info.gb_tile_mode) / sizeof(gpu_info.gb_tile_mode[0]);
	reg_value.pMacroTileConfig = gpu_info.gb_macro_tile_mode;
	reg_value.noOfMacroEntries =
	sizeof(gpu_info.gb_macro_tile_mode) / sizeof(gpu_info.gb_macro_tile_mode[0]);
	create_flags.value = 0;
	create_flags.useTileIndex = 1;

	addr_create_input.chipEngine = CIASICIDGFXENGINE_SOUTHERNISLAND;

	addr_create_input.chipFamily = FAMILY_CZ;
	addr_create_input.createFlags = create_flags;
	addr_create_input.callbacks.allocSysMem = alloc_sys_mem;
	addr_create_input.callbacks.freeSysMem = free_sys_mem;
	addr_create_input.callbacks.debugPrint = 0;
	addr_create_input.regValue = reg_value;

	addr_ret = AddrCreate(&addr_create_input, &addr_create_output);

	if (addr_ret != ADDR_OK) {
	drv_log("failed error =%d\n", addr_ret);
	return NULL;
	}

	return addr_create_output.hLib;
	}

	static int amdgpu_init(struct driver *drv)
	{
	struct amdgpu_priv *priv;
	drmVersionPtr drm_version;
	struct format_metadata metadata;
	uint64_t use_flags = BO_USE_RENDER_MASK;

	priv = calloc(1, sizeof(struct amdgpu_priv));
	if (!priv)
	return -1;

	drm_version = drmGetVersion(drv_get_fd(drv));
	if (!drm_version) {
	free(priv);
	return -1;
	}

	priv->drm_version = drm_version->version_minor;
	drmFreeVersion(drm_version);

	priv->addrlib = amdgpu_addrlib_init(drv_get_fd(drv));
	if (!priv->addrlib) {
	free(priv);
	return -1;
	}

	drv->priv = priv;

	drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
	&LINEAR_METADATA, BO_USE_TEXTURE_MASK);

	/* YUV format for camera */
	drv_modify_combination(drv, DRM_FORMAT_NV12, &LINEAR_METADATA,
	BO_USE_CAMERA_READ \| BO_USE_CAMERA_WRITE);
	/*
	* R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB and is used for JPEG snapshots
	* from camera.
	*/
	drv_modify_combination(drv, DRM_FORMAT_R8, &LINEAR_METADATA,
	BO_USE_CAMERA_READ \| BO_USE_CAMERA_WRITE);

	drv_modify_combination(drv, DRM_FORMAT_NV21, &LINEAR_METADATA, BO_USE_SCANOUT);
	drv_modify_combination(drv, DRM_FORMAT_NV12, &LINEAR_METADATA, BO_USE_SCANOUT);

	metadata.tiling = ADDR_DISPLAYABLE << 16 \| ADDR_TM_LINEAR_ALIGNED;
	metadata.priority = 2;
	metadata.modifier = DRM_FORMAT_MOD_LINEAR;

	drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
	&metadata, use_flags);

	drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR \| BO_USE_SCANOUT);
	drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR \| BO_USE_SCANOUT);
	drv_modify_combination(drv, DRM_FORMAT_XBGR8888, &metadata, BO_USE_SCANOUT);

	metadata.tiling = ADDR_NON_DISPLAYABLE << 16 \| ADDR_TM_LINEAR_ALIGNED;
	metadata.priority = 3;
	metadata.modifier = DRM_FORMAT_MOD_LINEAR;

	drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
	&metadata, use_flags);

	use_flags &= ~BO_USE_SW_WRITE_OFTEN;
	use_flags &= ~BO_USE_SW_READ_OFTEN;
	use_flags &= ~BO_USE_LINEAR;

	metadata.tiling = ADDR_DISPLAYABLE << 16 \| ADDR_TM_2D_TILED_THIN1;
	metadata.priority = 4;

	drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
	&metadata, use_flags);

	drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_SCANOUT);
	drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_SCANOUT);
	drv_modify_combination(drv, DRM_FORMAT_XBGR8888, &metadata, BO_USE_SCANOUT);

	metadata.tiling = ADDR_NON_DISPLAYABLE << 16 \| ADDR_TM_2D_TILED_THIN1;
	metadata.priority = 5;

	drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
	&metadata, use_flags);

	return 0;
	}

	static void amdgpu_close(struct driver *drv)
	{
	struct amdgpu_priv priv = (struct amdgpu_priv )drv->priv;
	AddrDestroy(priv->addrlib);
	free(priv);
	drv->priv = NULL;
	}

	static int amdgpu_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
	uint64_t use_flags)
	{
	struct amdgpu_priv priv = (struct amdgpu_priv )bo->drv->priv;
	void *addrlib = priv->addrlib;
	union drm_amdgpu_gem_create gem_create;
	struct amdgpu_bo_metadata metadata = { 0 };
	ADDR_COMPUTE_SURFACE_INFO_OUTPUT addr_out = { 0 };
	uint32_t tiling_flags = 0;
	size_t plane;
	int ret;

	if (format == DRM_FORMAT_NV12 \|\| format == DRM_FORMAT_NV21) {
	drv_bo_from_format(bo, ALIGN(width, 64), height, format);
	} else if (format == DRM_FORMAT_YVU420_ANDROID) {
	drv_bo_from_format(bo, ALIGN(width, 128), height, format);
	} else {
	if (amdgpu_addrlib_compute(addrlib, width, height, format, use_flags, &tiling_flags,
	&addr_out) < 0)
	return -EINVAL;

	bo->tiling = tiling_flags;
	/* RGB has 1 plane only */
	bo->offsets[0] = 0;
	bo->total_size = bo->sizes[0] = addr_out.surfSize;
	bo->strides[0] = addr_out.pixelPitch * DIV_ROUND_UP(addr_out.pixelBits, 8);
	}

	memset(&gem_create, 0, sizeof(gem_create));

	gem_create.in.bo_size = bo->total_size;
	gem_create.in.alignment = addr_out.baseAlign;
	/* Set the placement. */

	gem_create.in.domain_flags = 0;
	if (use_flags & (BO_USE_LINEAR \| BO_USE_SW))
	gem_create.in.domain_flags \|= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;

	if (use_flags & (BO_USE_SCANOUT \| BO_USE_CURSOR)) {
	/* TODO(dbehr) do not use VRAM after we enable display VM */
	gem_create.in.domains = AMDGPU_GEM_DOMAIN_VRAM;
	} else {
	gem_create.in.domains = AMDGPU_GEM_DOMAIN_GTT;
	if (!(use_flags & BO_USE_SW_READ_OFTEN))
	gem_create.in.domain_flags \|= AMDGPU_GEM_CREATE_CPU_GTT_USWC;
	}

	/* If drm_version >= 21 everything exposes explicit synchronization primitives
	and chromeos/arc++ will use them. Disable implicit synchronization. */
	if (priv->drm_version >= 21) {
	gem_create.in.domain_flags \|= AMDGPU_GEM_CREATE_EXPLICIT_SYNC;
	}

	/* Allocate the buffer with the preferred heap. */
	ret = drmCommandWriteRead(drv_get_fd(bo->drv), DRM_AMDGPU_GEM_CREATE, &gem_create,
	sizeof(gem_create));

	if (ret < 0)
	return ret;

	metadata.tiling_info = tiling_flags;

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

	ret = amdgpu_set_metadata(drv_get_fd(bo->drv), bo->handles[0].u32, &metadata);

	return ret;
	}

	static void amdgpu_bo_map(struct bo bo, struct vma *vma, size_t plane, uint32_t map_flags)
	{
	int ret;
	union drm_amdgpu_gem_mmap gem_map;

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

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

	vma->length = bo->total_size;

	return mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
	gem_map.out.addr_ptr);
	}

	static uint32_t amdgpu_resolve_format(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_amdgpu = {
	.name = "amdgpu",
	.init = amdgpu_init,
	.close = amdgpu_close,
	.bo_create = amdgpu_bo_create,
	.bo_destroy = drv_gem_bo_destroy,
	.bo_import = drv_prime_bo_import,
	.bo_map = amdgpu_bo_map,
	.bo_unmap = drv_bo_munmap,
	.resolve_format = amdgpu_resolve_format,
	};

	#endif