drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c - kernel/msm-4.9 - Gitiles

 /*
  * Copyright 2015 Advanced Micro Devices, Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  *
  */
 #include <linux/list.h>
 #include <linux/slab.h>
 #include <linux/pci.h>
 #include <drm/drmP.h>
 #include <linux/firmware.h>
 #include <drm/amdgpu_drm.h>
 #include "amdgpu.h"
 #include "cgs_linux.h"
 #include "atom.h"
 #include "amdgpu_ucode.h"


 struct amdgpu_cgs_device {
 	struct cgs_device base;
 	struct amdgpu_device *adev;
 };

 #define CGS_FUNC_ADEV							\
 	struct amdgpu_device *adev =					\
 		((struct amdgpu_cgs_device *)cgs_device)->adev

 static int amdgpu_cgs_gpu_mem_info(void *cgs_device, enum cgs_gpu_mem_type type,
 				   uint64_t *mc_start, uint64_t *mc_size,
 				   uint64_t *mem_size)
 {
 	CGS_FUNC_ADEV;
 	switch(type) {
 	case CGS_GPU_MEM_TYPE__VISIBLE_CONTIG_FB:
 	case CGS_GPU_MEM_TYPE__VISIBLE_FB:
 		*mc_start = 0;
 		*mc_size = adev->mc.visible_vram_size;
 		*mem_size = adev->mc.visible_vram_size - adev->vram_pin_size;
 		break;
 	case CGS_GPU_MEM_TYPE__INVISIBLE_CONTIG_FB:
 	case CGS_GPU_MEM_TYPE__INVISIBLE_FB:
 		*mc_start = adev->mc.visible_vram_size;
 		*mc_size = adev->mc.real_vram_size - adev->mc.visible_vram_size;
 		*mem_size = *mc_size;
 		break;
 	case CGS_GPU_MEM_TYPE__GART_CACHEABLE:
 	case CGS_GPU_MEM_TYPE__GART_WRITECOMBINE:
 		*mc_start = adev->mc.gtt_start;
 		*mc_size = adev->mc.gtt_size;
 		*mem_size = adev->mc.gtt_size - adev->gart_pin_size;
 		break;
 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 static int amdgpu_cgs_gmap_kmem(void *cgs_device, void *kmem,
 				uint64_t size,
 				uint64_t min_offset, uint64_t max_offset,
 				cgs_handle_t *kmem_handle, uint64_t *mcaddr)
 {
 	CGS_FUNC_ADEV;
 	int ret;
 	struct amdgpu_bo *bo;
 	struct page *kmem_page = vmalloc_to_page(kmem);
 	int npages = ALIGN(size, PAGE_SIZE) >> PAGE_SHIFT;

 	struct sg_table *sg = drm_prime_pages_to_sg(&kmem_page, npages);
 	ret = amdgpu_bo_create(adev, size, PAGE_SIZE, false,
 			       AMDGPU_GEM_DOMAIN_GTT, 0, sg, NULL, &bo);
 	if (ret)
 		return ret;
 	ret = amdgpu_bo_reserve(bo, false);
 	if (unlikely(ret != 0))
 		return ret;

 	/* pin buffer into GTT */
 	ret = amdgpu_bo_pin_restricted(bo, AMDGPU_GEM_DOMAIN_GTT,
 				       min_offset, max_offset, mcaddr);
 	amdgpu_bo_unreserve(bo);

 	*kmem_handle = (cgs_handle_t)bo;
 	return ret;
 }

 static int amdgpu_cgs_gunmap_kmem(void *cgs_device, cgs_handle_t kmem_handle)
 {
 	struct amdgpu_bo *obj = (struct amdgpu_bo *)kmem_handle;

 	if (obj) {
 		int r = amdgpu_bo_reserve(obj, false);
 		if (likely(r == 0)) {
 			amdgpu_bo_unpin(obj);
 			amdgpu_bo_unreserve(obj);
 		}
 		amdgpu_bo_unref(&obj);

 	}
 	return 0;
 }

 static int amdgpu_cgs_alloc_gpu_mem(void *cgs_device,
 				    enum cgs_gpu_mem_type type,
 				    uint64_t size, uint64_t align,
 				    uint64_t min_offset, uint64_t max_offset,
 				    cgs_handle_t *handle)
 {
 	CGS_FUNC_ADEV;
 	uint16_t flags = 0;
 	int ret = 0;
 	uint32_t domain = 0;
 	struct amdgpu_bo *obj;
 	struct ttm_placement placement;
 	struct ttm_place place;

 	if (min_offset > max_offset) {
 		BUG_ON(1);
 		return -EINVAL;
 	}

 	/* fail if the alignment is not a power of 2 */
 	if (((align != 1) && (align & (align - 1)))
 	    || size == 0 || align == 0)
 		return -EINVAL;


 	switch(type) {
 	case CGS_GPU_MEM_TYPE__VISIBLE_CONTIG_FB:
 	case CGS_GPU_MEM_TYPE__VISIBLE_FB:
 		flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
 		domain = AMDGPU_GEM_DOMAIN_VRAM;
 		if (max_offset > adev->mc.real_vram_size)
 			return -EINVAL;
 		place.fpfn = min_offset >> PAGE_SHIFT;
 		place.lpfn = max_offset >> PAGE_SHIFT;
 		place.flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
 			TTM_PL_FLAG_VRAM;
 		break;
 	case CGS_GPU_MEM_TYPE__INVISIBLE_CONTIG_FB:
 	case CGS_GPU_MEM_TYPE__INVISIBLE_FB:
 		flags = AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
 		domain = AMDGPU_GEM_DOMAIN_VRAM;
 		if (adev->mc.visible_vram_size < adev->mc.real_vram_size) {
 			place.fpfn =
 				max(min_offset, adev->mc.visible_vram_size) >> PAGE_SHIFT;
 			place.lpfn =
 				min(max_offset, adev->mc.real_vram_size) >> PAGE_SHIFT;
 			place.flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
 				TTM_PL_FLAG_VRAM;
 		}

 		break;
 	case CGS_GPU_MEM_TYPE__GART_CACHEABLE:
 		domain = AMDGPU_GEM_DOMAIN_GTT;
 		place.fpfn = min_offset >> PAGE_SHIFT;
 		place.lpfn = max_offset >> PAGE_SHIFT;
 		place.flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_TT;
 		break;
 	case CGS_GPU_MEM_TYPE__GART_WRITECOMBINE:
 		flags = AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 		domain = AMDGPU_GEM_DOMAIN_GTT;
 		place.fpfn = min_offset >> PAGE_SHIFT;
 		place.lpfn = max_offset >> PAGE_SHIFT;
 		place.flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_TT |
 			TTM_PL_FLAG_UNCACHED;
 		break;
 	default:
 		return -EINVAL;
 	}


 	*handle = 0;

 	placement.placement = &place;
 	placement.num_placement = 1;
 	placement.busy_placement = &place;
 	placement.num_busy_placement = 1;

 	ret = amdgpu_bo_create_restricted(adev, size, PAGE_SIZE,
 					  true, domain, flags,
 					  NULL, &placement, NULL,
 					  &obj);
 	if (ret) {
 		DRM_ERROR("(%d) bo create failed\n", ret);
 		return ret;
 	}
 	*handle = (cgs_handle_t)obj;

 	return ret;
 }

 static int amdgpu_cgs_import_gpu_mem(void *cgs_device, int dmabuf_fd,
 				     cgs_handle_t *handle)
 {
 	CGS_FUNC_ADEV;
 	int r;
 	uint32_t dma_handle;
 	struct drm_gem_object *obj;
 	struct amdgpu_bo *bo;
 	struct drm_device *dev = adev->ddev;
 	struct drm_file *file_priv = NULL, *priv;

 	mutex_lock(&dev->struct_mutex);
 	list_for_each_entry(priv, &dev->filelist, lhead) {
 		rcu_read_lock();
 		if (priv->pid == get_pid(task_pid(current)))
 			file_priv = priv;
 		rcu_read_unlock();
 		if (file_priv)
 			break;
 	}
 	mutex_unlock(&dev->struct_mutex);
 	r = dev->driver->prime_fd_to_handle(dev,
 					    file_priv, dmabuf_fd,
 					    &dma_handle);
 	spin_lock(&file_priv->table_lock);

 	/* Check if we currently have a reference on the object */
 	obj = idr_find(&file_priv->object_idr, dma_handle);
 	if (obj == NULL) {
 		spin_unlock(&file_priv->table_lock);
 		return -EINVAL;
 	}
 	spin_unlock(&file_priv->table_lock);
 	bo = gem_to_amdgpu_bo(obj);
 	*handle = (cgs_handle_t)bo;
 	return 0;
 }

 static int amdgpu_cgs_free_gpu_mem(void *cgs_device, cgs_handle_t handle)
 {
 	struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;

 	if (obj) {
 		int r = amdgpu_bo_reserve(obj, false);
 		if (likely(r == 0)) {
 			amdgpu_bo_kunmap(obj);
 			amdgpu_bo_unpin(obj);
 			amdgpu_bo_unreserve(obj);
 		}
 		amdgpu_bo_unref(&obj);

 	}
 	return 0;
 }

 static int amdgpu_cgs_gmap_gpu_mem(void *cgs_device, cgs_handle_t handle,
 				   uint64_t *mcaddr)
 {
 	int r;
 	u64 min_offset, max_offset;
 	struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;

 	WARN_ON_ONCE(obj->placement.num_placement > 1);

 	min_offset = obj->placements[0].fpfn << PAGE_SHIFT;
 	max_offset = obj->placements[0].lpfn << PAGE_SHIFT;

 	r = amdgpu_bo_reserve(obj, false);
 	if (unlikely(r != 0))
 		return r;
 	r = amdgpu_bo_pin_restricted(obj, AMDGPU_GEM_DOMAIN_GTT,
 				     min_offset, max_offset, mcaddr);
 	amdgpu_bo_unreserve(obj);
 	return r;
 }

 static int amdgpu_cgs_gunmap_gpu_mem(void *cgs_device, cgs_handle_t handle)
 {
 	int r;
 	struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;
 	r = amdgpu_bo_reserve(obj, false);
 	if (unlikely(r != 0))
 		return r;
 	r = amdgpu_bo_unpin(obj);
 	amdgpu_bo_unreserve(obj);
 	return r;
 }

 static int amdgpu_cgs_kmap_gpu_mem(void *cgs_device, cgs_handle_t handle,
 				   void **map)
 {
 	int r;
 	struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;
 	r = amdgpu_bo_reserve(obj, false);
 	if (unlikely(r != 0))
 		return r;
 	r = amdgpu_bo_kmap(obj, map);
 	amdgpu_bo_unreserve(obj);
 	return r;
 }

 static int amdgpu_cgs_kunmap_gpu_mem(void *cgs_device, cgs_handle_t handle)
 {
 	int r;
 	struct amdgpu_bo *obj = (struct amdgpu_bo *)handle;
 	r = amdgpu_bo_reserve(obj, false);
 	if (unlikely(r != 0))
 		return r;
 	amdgpu_bo_kunmap(obj);
 	amdgpu_bo_unreserve(obj);
 	return r;
 }

 static uint32_t amdgpu_cgs_read_register(void *cgs_device, unsigned offset)
 {
 	CGS_FUNC_ADEV;
 	return RREG32(offset);
 }

 static void amdgpu_cgs_write_register(void *cgs_device, unsigned offset,
 				      uint32_t value)
 {
 	CGS_FUNC_ADEV;
 	WREG32(offset, value);
 }

 static uint32_t amdgpu_cgs_read_ind_register(void *cgs_device,
 					     enum cgs_ind_reg space,
 					     unsigned index)
 {
 	CGS_FUNC_ADEV;
 	switch (space) {
 	case CGS_IND_REG__MMIO:
 		return RREG32_IDX(index);
 	case CGS_IND_REG__PCIE:
 		return RREG32_PCIE(index);
 	case CGS_IND_REG__SMC:
 		return RREG32_SMC(index);
 	case CGS_IND_REG__UVD_CTX:
 		return RREG32_UVD_CTX(index);
 	case CGS_IND_REG__DIDT:
 		return RREG32_DIDT(index);
 	case CGS_IND_REG__AUDIO_ENDPT:
 		DRM_ERROR("audio endpt register access not implemented.\n");
 		return 0;
 	}
 	WARN(1, "Invalid indirect register space");
 	return 0;
 }

 static void amdgpu_cgs_write_ind_register(void *cgs_device,
 					  enum cgs_ind_reg space,
 					  unsigned index, uint32_t value)
 {
 	CGS_FUNC_ADEV;
 	switch (space) {
 	case CGS_IND_REG__MMIO:
 		return WREG32_IDX(index, value);
 	case CGS_IND_REG__PCIE:
 		return WREG32_PCIE(index, value);
 	case CGS_IND_REG__SMC:
 		return WREG32_SMC(index, value);
 	case CGS_IND_REG__UVD_CTX:
 		return WREG32_UVD_CTX(index, value);
 	case CGS_IND_REG__DIDT:
 		return WREG32_DIDT(index, value);
 	case CGS_IND_REG__AUDIO_ENDPT:
 		DRM_ERROR("audio endpt register access not implemented.\n");
 		return;
 	}
 	WARN(1, "Invalid indirect register space");
 }

 static uint8_t amdgpu_cgs_read_pci_config_byte(void *cgs_device, unsigned addr)
 {
 	CGS_FUNC_ADEV;
 	uint8_t val;
 	int ret = pci_read_config_byte(adev->pdev, addr, &val);
 	if (WARN(ret, "pci_read_config_byte error"))
 		return 0;
 	return val;
 }

 static uint16_t amdgpu_cgs_read_pci_config_word(void *cgs_device, unsigned addr)
 {
 	CGS_FUNC_ADEV;
 	uint16_t val;
 	int ret = pci_read_config_word(adev->pdev, addr, &val);
 	if (WARN(ret, "pci_read_config_word error"))
 		return 0;
 	return val;
 }

 static uint32_t amdgpu_cgs_read_pci_config_dword(void *cgs_device,
 						 unsigned addr)
 {
 	CGS_FUNC_ADEV;
 	uint32_t val;
 	int ret = pci_read_config_dword(adev->pdev, addr, &val);
 	if (WARN(ret, "pci_read_config_dword error"))
 		return 0;
 	return val;
 }

 static void amdgpu_cgs_write_pci_config_byte(void *cgs_device, unsigned addr,
 					     uint8_t value)
 {
 	CGS_FUNC_ADEV;
 	int ret = pci_write_config_byte(adev->pdev, addr, value);
 	WARN(ret, "pci_write_config_byte error");
 }

 static void amdgpu_cgs_write_pci_config_word(void *cgs_device, unsigned addr,
 					     uint16_t value)
 {
 	CGS_FUNC_ADEV;
 	int ret = pci_write_config_word(adev->pdev, addr, value);
 	WARN(ret, "pci_write_config_word error");
 }

 static void amdgpu_cgs_write_pci_config_dword(void *cgs_device, unsigned addr,
 					      uint32_t value)
 {
 	CGS_FUNC_ADEV;
 	int ret = pci_write_config_dword(adev->pdev, addr, value);
 	WARN(ret, "pci_write_config_dword error");
 }

 static const void *amdgpu_cgs_atom_get_data_table(void *cgs_device,
 						  unsigned table, uint16_t *size,
 						  uint8_t *frev, uint8_t *crev)
 {
 	CGS_FUNC_ADEV;
 	uint16_t data_start;

 	if (amdgpu_atom_parse_data_header(
 		    adev->mode_info.atom_context, table, size,
 		    frev, crev, &data_start))
 		return (uint8_t*)adev->mode_info.atom_context->bios +
 			data_start;

 	return NULL;
 }

 static int amdgpu_cgs_atom_get_cmd_table_revs(void *cgs_device, unsigned table,
 					      uint8_t *frev, uint8_t *crev)
 {
 	CGS_FUNC_ADEV;

 	if (amdgpu_atom_parse_cmd_header(
 		    adev->mode_info.atom_context, table,
 		    frev, crev))
 		return 0;

 	return -EINVAL;
 }

 static int amdgpu_cgs_atom_exec_cmd_table(void *cgs_device, unsigned table,
 					  void *args)
 {
 	CGS_FUNC_ADEV;

 	return amdgpu_atom_execute_table(
 		adev->mode_info.atom_context, table, args);
 }

 static int amdgpu_cgs_create_pm_request(void *cgs_device, cgs_handle_t *request)
 {
 	/* TODO */
 	return 0;
 }

 static int amdgpu_cgs_destroy_pm_request(void *cgs_device, cgs_handle_t request)
 {
 	/* TODO */
 	return 0;
 }

 static int amdgpu_cgs_set_pm_request(void *cgs_device, cgs_handle_t request,
 				     int active)
 {
 	/* TODO */
 	return 0;
 }

 static int amdgpu_cgs_pm_request_clock(void *cgs_device, cgs_handle_t request,
 				       enum cgs_clock clock, unsigned freq)
 {
 	/* TODO */
 	return 0;
 }

 static int amdgpu_cgs_pm_request_engine(void *cgs_device, cgs_handle_t request,
 					enum cgs_engine engine, int powered)
 {
 	/* TODO */
 	return 0;
 }


 static int amdgpu_cgs_pm_query_clock_limits(void *cgs_device,
 					    enum cgs_clock clock,
 					    struct cgs_clock_limits *limits)
 {
 	/* TODO */
 	return 0;
 }

 static int amdgpu_cgs_set_camera_voltages(void *cgs_device, uint32_t mask,
 					  const uint32_t *voltages)
 {
 	DRM_ERROR("not implemented");
 	return -EPERM;
 }

 struct cgs_irq_params {
 	unsigned src_id;
 	cgs_irq_source_set_func_t set;
 	cgs_irq_handler_func_t handler;
 	void *private_data;
 };

 static int cgs_set_irq_state(struct amdgpu_device *adev,
 			     struct amdgpu_irq_src *src,
 			     unsigned type,
 			     enum amdgpu_interrupt_state state)
 {
 	struct cgs_irq_params *irq_params =
 		(struct cgs_irq_params *)src->data;
 	if (!irq_params)
 		return -EINVAL;
 	if (!irq_params->set)
 		return -EINVAL;
 	return irq_params->set(irq_params->private_data,
 			       irq_params->src_id,
 			       type,
 			       (int)state);
 }

 static int cgs_process_irq(struct amdgpu_device *adev,
 			   struct amdgpu_irq_src *source,
 			   struct amdgpu_iv_entry *entry)
 {
 	struct cgs_irq_params *irq_params =
 		(struct cgs_irq_params *)source->data;
 	if (!irq_params)
 		return -EINVAL;
 	if (!irq_params->handler)
 		return -EINVAL;
 	return irq_params->handler(irq_params->private_data,
 				   irq_params->src_id,
 				   entry->iv_entry);
 }

 static const struct amdgpu_irq_src_funcs cgs_irq_funcs = {
 	.set = cgs_set_irq_state,
 	.process = cgs_process_irq,
 };

 static int amdgpu_cgs_add_irq_source(void *cgs_device, unsigned src_id,
 				     unsigned num_types,
 				     cgs_irq_source_set_func_t set,
 				     cgs_irq_handler_func_t handler,
 				     void *private_data)
 {
 	CGS_FUNC_ADEV;
 	int ret = 0;
 	struct cgs_irq_params *irq_params;
 	struct amdgpu_irq_src *source =
 		kzalloc(sizeof(struct amdgpu_irq_src), GFP_KERNEL);
 	if (!source)
 		return -ENOMEM;
 	irq_params =
 		kzalloc(sizeof(struct cgs_irq_params), GFP_KERNEL);
 	if (!irq_params) {
 		kfree(source);
 		return -ENOMEM;
 	}
 	source->num_types = num_types;
 	source->funcs = &cgs_irq_funcs;
 	irq_params->src_id = src_id;
 	irq_params->set = set;
 	irq_params->handler = handler;
 	irq_params->private_data = private_data;
 	source->data = (void *)irq_params;
 	ret = amdgpu_irq_add_id(adev, src_id, source);
 	if (ret) {
 		kfree(irq_params);
 		kfree(source);
 	}

 	return ret;
 }

 static int amdgpu_cgs_irq_get(void *cgs_device, unsigned src_id, unsigned type)
 {
 	CGS_FUNC_ADEV;
 	return amdgpu_irq_get(adev, adev->irq.sources[src_id], type);
 }

 static int amdgpu_cgs_irq_put(void *cgs_device, unsigned src_id, unsigned type)
 {
 	CGS_FUNC_ADEV;
 	return amdgpu_irq_put(adev, adev->irq.sources[src_id], type);
 }

 int amdgpu_cgs_set_clockgating_state(void *cgs_device,
 				  enum amd_ip_block_type block_type,
 				  enum amd_clockgating_state state)
 {
 	CGS_FUNC_ADEV;
 	int i, r = -1;

 	for (i = 0; i < adev->num_ip_blocks; i++) {
 		if (!adev->ip_block_status[i].valid)
 			continue;

 		if (adev->ip_blocks[i].type == block_type) {
 			r = adev->ip_blocks[i].funcs->set_clockgating_state(
 								(void *)adev,
 									state);
 			break;
 		}
 	}
 	return r;
 }

 int amdgpu_cgs_set_powergating_state(void *cgs_device,
 				  enum amd_ip_block_type block_type,
 				  enum amd_powergating_state state)
 {
 	CGS_FUNC_ADEV;
 	int i, r = -1;

 	for (i = 0; i < adev->num_ip_blocks; i++) {
 		if (!adev->ip_block_status[i].valid)
 			continue;

 		if (adev->ip_blocks[i].type == block_type) {
 			r = adev->ip_blocks[i].funcs->set_powergating_state(
 								(void *)adev,
 									state);
 			break;
 		}
 	}
 	return r;
 }


 static uint32_t fw_type_convert(void *cgs_device, uint32_t fw_type)
 {
 	CGS_FUNC_ADEV;
 	enum AMDGPU_UCODE_ID result = AMDGPU_UCODE_ID_MAXIMUM;

 	switch (fw_type) {
 	case CGS_UCODE_ID_SDMA0:
 		result = AMDGPU_UCODE_ID_SDMA0;
 		break;
 	case CGS_UCODE_ID_SDMA1:
 		result = AMDGPU_UCODE_ID_SDMA1;
 		break;
 	case CGS_UCODE_ID_CP_CE:
 		result = AMDGPU_UCODE_ID_CP_CE;
 		break;
 	case CGS_UCODE_ID_CP_PFP:
 		result = AMDGPU_UCODE_ID_CP_PFP;
 		break;
 	case CGS_UCODE_ID_CP_ME:
 		result = AMDGPU_UCODE_ID_CP_ME;
 		break;
 	case CGS_UCODE_ID_CP_MEC:
 	case CGS_UCODE_ID_CP_MEC_JT1:
 		result = AMDGPU_UCODE_ID_CP_MEC1;
 		break;
 	case CGS_UCODE_ID_CP_MEC_JT2:
 		if (adev->asic_type == CHIP_TONGA)
 			result = AMDGPU_UCODE_ID_CP_MEC2;
 		else if (adev->asic_type == CHIP_CARRIZO)
 			result = AMDGPU_UCODE_ID_CP_MEC1;
 		break;
 	case CGS_UCODE_ID_RLC_G:
 		result = AMDGPU_UCODE_ID_RLC_G;
 		break;
 	default:
 		DRM_ERROR("Firmware type not supported\n");
 	}
 	return result;
 }

 static int amdgpu_cgs_get_firmware_info(void *cgs_device,
 					enum cgs_ucode_id type,
 					struct cgs_firmware_info *info)
 {
 	CGS_FUNC_ADEV;

 	if (CGS_UCODE_ID_SMU != type) {
 		uint64_t gpu_addr;
 		uint32_t data_size;
 		const struct gfx_firmware_header_v1_0 *header;
 		enum AMDGPU_UCODE_ID id;
 		struct amdgpu_firmware_info *ucode;

 		id = fw_type_convert(cgs_device, type);
 		ucode = &adev->firmware.ucode[id];
 		if (ucode->fw == NULL)
 			return -EINVAL;

 		gpu_addr  = ucode->mc_addr;
 		header = (const struct gfx_firmware_header_v1_0 *)ucode->fw->data;
 		data_size = le32_to_cpu(header->header.ucode_size_bytes);

 		if ((type == CGS_UCODE_ID_CP_MEC_JT1) ||
 		    (type == CGS_UCODE_ID_CP_MEC_JT2)) {
 			gpu_addr += le32_to_cpu(header->jt_offset) << 2;
 			data_size = le32_to_cpu(header->jt_size) << 2;
 		}
 		info->mc_addr = gpu_addr;
 		info->image_size = data_size;
 		info->version = (uint16_t)le32_to_cpu(header->header.ucode_version);
 		info->feature_version = (uint16_t)le32_to_cpu(header->ucode_feature_version);
 	} else {
 		char fw_name[30] = {0};
 		int err = 0;
 		uint32_t ucode_size;
 		uint32_t ucode_start_address;
 		const uint8_t *src;
 		const struct smc_firmware_header_v1_0 *hdr;

 		switch (adev->asic_type) {
 		case CHIP_TONGA:
 			strcpy(fw_name, "amdgpu/tonga_smc.bin");
 			break;
 		default:
 			DRM_ERROR("SMC firmware not supported\n");
 			return -EINVAL;
 		}

 		err = request_firmware(&adev->pm.fw, fw_name, adev->dev);
 		if (err) {
 			DRM_ERROR("Failed to request firmware\n");
 			return err;
 		}

 		err = amdgpu_ucode_validate(adev->pm.fw);
 		if (err) {
 			DRM_ERROR("Failed to load firmware \"%s\"", fw_name);
 			release_firmware(adev->pm.fw);
 			adev->pm.fw = NULL;
 			return err;
 		}

 		hdr = (const struct smc_firmware_header_v1_0 *)	adev->pm.fw->data;
 		adev->pm.fw_version = le32_to_cpu(hdr->header.ucode_version);
 		ucode_size = le32_to_cpu(hdr->header.ucode_size_bytes);
 		ucode_start_address = le32_to_cpu(hdr->ucode_start_addr);
 		src = (const uint8_t *)(adev->pm.fw->data +
 		       le32_to_cpu(hdr->header.ucode_array_offset_bytes));

 		info->version = adev->pm.fw_version;
 		info->image_size = ucode_size;
 		info->kptr = (void *)src;
 	}
 	return 0;
 }

 static const struct cgs_ops amdgpu_cgs_ops = {
 	amdgpu_cgs_gpu_mem_info,
 	amdgpu_cgs_gmap_kmem,
 	amdgpu_cgs_gunmap_kmem,
 	amdgpu_cgs_alloc_gpu_mem,
 	amdgpu_cgs_free_gpu_mem,
 	amdgpu_cgs_gmap_gpu_mem,
 	amdgpu_cgs_gunmap_gpu_mem,
 	amdgpu_cgs_kmap_gpu_mem,
 	amdgpu_cgs_kunmap_gpu_mem,
 	amdgpu_cgs_read_register,
 	amdgpu_cgs_write_register,
 	amdgpu_cgs_read_ind_register,
 	amdgpu_cgs_write_ind_register,
 	amdgpu_cgs_read_pci_config_byte,
 	amdgpu_cgs_read_pci_config_word,
 	amdgpu_cgs_read_pci_config_dword,
 	amdgpu_cgs_write_pci_config_byte,
 	amdgpu_cgs_write_pci_config_word,
 	amdgpu_cgs_write_pci_config_dword,
 	amdgpu_cgs_atom_get_data_table,
 	amdgpu_cgs_atom_get_cmd_table_revs,
 	amdgpu_cgs_atom_exec_cmd_table,
 	amdgpu_cgs_create_pm_request,
 	amdgpu_cgs_destroy_pm_request,
 	amdgpu_cgs_set_pm_request,
 	amdgpu_cgs_pm_request_clock,
 	amdgpu_cgs_pm_request_engine,
 	amdgpu_cgs_pm_query_clock_limits,
 	amdgpu_cgs_set_camera_voltages,
 	amdgpu_cgs_get_firmware_info,
 	amdgpu_cgs_set_powergating_state,
 	amdgpu_cgs_set_clockgating_state
 };

 static const struct cgs_os_ops amdgpu_cgs_os_ops = {
 	amdgpu_cgs_import_gpu_mem,
 	amdgpu_cgs_add_irq_source,
 	amdgpu_cgs_irq_get,
 	amdgpu_cgs_irq_put
 };

 void *amdgpu_cgs_create_device(struct amdgpu_device *adev)
 {
 	struct amdgpu_cgs_device *cgs_device =
 		kmalloc(sizeof(*cgs_device), GFP_KERNEL);

 	if (!cgs_device) {
 		DRM_ERROR("Couldn't allocate CGS device structure\n");
 		return NULL;
 	}

 	cgs_device->base.ops = &amdgpu_cgs_ops;
 	cgs_device->base.os_ops = &amdgpu_cgs_os_ops;
 	cgs_device->adev = adev;

 	return cgs_device;
 }

 void amdgpu_cgs_destroy_device(void *cgs_device)
 {
 	kfree(cgs_device);
 }
	/*
	* Copyright 2015 Advanced Micro Devices, Inc.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	* OTHER DEALINGS IN THE SOFTWARE.
	*
	*
	*/
	#include <linux/list.h>
	#include <linux/slab.h>
	#include <linux/pci.h>
	#include <drm/drmP.h>
	#include <linux/firmware.h>
	#include <drm/amdgpu_drm.h>
	#include "amdgpu.h"
	#include "cgs_linux.h"
	#include "atom.h"
	#include "amdgpu_ucode.h"


	struct amdgpu_cgs_device {
	struct cgs_device base;
	struct amdgpu_device *adev;
	};

	#define CGS_FUNC_ADEV \
	struct amdgpu_device *adev = \
	((struct amdgpu_cgs_device *)cgs_device)->adev

	static int amdgpu_cgs_gpu_mem_info(void *cgs_device, enum cgs_gpu_mem_type type,
	uint64_t mc_start, uint64_t mc_size,
	uint64_t *mem_size)
	{
	CGS_FUNC_ADEV;
	switch(type) {
	case CGS_GPU_MEM_TYPE__VISIBLE_CONTIG_FB:
	case CGS_GPU_MEM_TYPE__VISIBLE_FB:
	*mc_start = 0;
	*mc_size = adev->mc.visible_vram_size;
	*mem_size = adev->mc.visible_vram_size - adev->vram_pin_size;
	break;
	case CGS_GPU_MEM_TYPE__INVISIBLE_CONTIG_FB:
	case CGS_GPU_MEM_TYPE__INVISIBLE_FB:
	*mc_start = adev->mc.visible_vram_size;
	*mc_size = adev->mc.real_vram_size - adev->mc.visible_vram_size;
	mem_size = mc_size;
	break;
	case CGS_GPU_MEM_TYPE__GART_CACHEABLE:
	case CGS_GPU_MEM_TYPE__GART_WRITECOMBINE:
	*mc_start = adev->mc.gtt_start;
	*mc_size = adev->mc.gtt_size;
	*mem_size = adev->mc.gtt_size - adev->gart_pin_size;
	break;
	default:
	return -EINVAL;
	}

	return 0;
	}

	static int amdgpu_cgs_gmap_kmem(void cgs_device, void kmem,
	uint64_t size,
	uint64_t min_offset, uint64_t max_offset,
	cgs_handle_t kmem_handle, uint64_t mcaddr)
	{
	CGS_FUNC_ADEV;
	int ret;
	struct amdgpu_bo *bo;
	struct page *kmem_page = vmalloc_to_page(kmem);
	int npages = ALIGN(size, PAGE_SIZE) >> PAGE_SHIFT;

	struct sg_table *sg = drm_prime_pages_to_sg(&kmem_page, npages);
	ret = amdgpu_bo_create(adev, size, PAGE_SIZE, false,
	AMDGPU_GEM_DOMAIN_GTT, 0, sg, NULL, &bo);
	if (ret)
	return ret;
	ret = amdgpu_bo_reserve(bo, false);
	if (unlikely(ret != 0))
	return ret;

	/* pin buffer into GTT */
	ret = amdgpu_bo_pin_restricted(bo, AMDGPU_GEM_DOMAIN_GTT,
	min_offset, max_offset, mcaddr);
	amdgpu_bo_unreserve(bo);

	*kmem_handle = (cgs_handle_t)bo;
	return ret;
	}

	static int amdgpu_cgs_gunmap_kmem(void *cgs_device, cgs_handle_t kmem_handle)
	{
	struct amdgpu_bo obj = (struct amdgpu_bo )kmem_handle;

	if (obj) {
	int r = amdgpu_bo_reserve(obj, false);
	if (likely(r == 0)) {
	amdgpu_bo_unpin(obj);
	amdgpu_bo_unreserve(obj);
	}
	amdgpu_bo_unref(&obj);

	}
	return 0;
	}

	static int amdgpu_cgs_alloc_gpu_mem(void *cgs_device,
	enum cgs_gpu_mem_type type,
	uint64_t size, uint64_t align,
	uint64_t min_offset, uint64_t max_offset,
	cgs_handle_t *handle)
	{
	CGS_FUNC_ADEV;
	uint16_t flags = 0;
	int ret = 0;
	uint32_t domain = 0;
	struct amdgpu_bo *obj;
	struct ttm_placement placement;
	struct ttm_place place;

	if (min_offset > max_offset) {
	BUG_ON(1);
	return -EINVAL;
	}

	/* fail if the alignment is not a power of 2 */
	if (((align != 1) && (align & (align - 1)))
	\|\| size == 0 \|\| align == 0)
	return -EINVAL;


	switch(type) {
	case CGS_GPU_MEM_TYPE__VISIBLE_CONTIG_FB:
	case CGS_GPU_MEM_TYPE__VISIBLE_FB:
	flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
	domain = AMDGPU_GEM_DOMAIN_VRAM;
	if (max_offset > adev->mc.real_vram_size)
	return -EINVAL;
	place.fpfn = min_offset >> PAGE_SHIFT;
	place.lpfn = max_offset >> PAGE_SHIFT;
	place.flags = TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED \|
	TTM_PL_FLAG_VRAM;
	break;
	case CGS_GPU_MEM_TYPE__INVISIBLE_CONTIG_FB:
	case CGS_GPU_MEM_TYPE__INVISIBLE_FB:
	flags = AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
	domain = AMDGPU_GEM_DOMAIN_VRAM;
	if (adev->mc.visible_vram_size < adev->mc.real_vram_size) {
	place.fpfn =
	max(min_offset, adev->mc.visible_vram_size) >> PAGE_SHIFT;
	place.lpfn =
	min(max_offset, adev->mc.real_vram_size) >> PAGE_SHIFT;
	place.flags = TTM_PL_FLAG_WC \| TTM_PL_FLAG_UNCACHED \|
	TTM_PL_FLAG_VRAM;
	}

	break;
	case CGS_GPU_MEM_TYPE__GART_CACHEABLE:
	domain = AMDGPU_GEM_DOMAIN_GTT;
	place.fpfn = min_offset >> PAGE_SHIFT;
	place.lpfn = max_offset >> PAGE_SHIFT;
	place.flags = TTM_PL_FLAG_CACHED \| TTM_PL_FLAG_TT;
	break;
	case CGS_GPU_MEM_TYPE__GART_WRITECOMBINE:
	flags = AMDGPU_GEM_CREATE_CPU_GTT_USWC;
	domain = AMDGPU_GEM_DOMAIN_GTT;
	place.fpfn = min_offset >> PAGE_SHIFT;
	place.lpfn = max_offset >> PAGE_SHIFT;
	place.flags = TTM_PL_FLAG_WC \| TTM_PL_FLAG_TT \|
	TTM_PL_FLAG_UNCACHED;
	break;
	default:
	return -EINVAL;
	}


	*handle = 0;

	placement.placement = &place;
	placement.num_placement = 1;
	placement.busy_placement = &place;
	placement.num_busy_placement = 1;

	ret = amdgpu_bo_create_restricted(adev, size, PAGE_SIZE,
	true, domain, flags,
	NULL, &placement, NULL,
	&obj);
	if (ret) {
	DRM_ERROR("(%d) bo create failed\n", ret);
	return ret;
	}
	*handle = (cgs_handle_t)obj;

	return ret;
	}

	static int amdgpu_cgs_import_gpu_mem(void *cgs_device, int dmabuf_fd,
	cgs_handle_t *handle)
	{
	CGS_FUNC_ADEV;
	int r;
	uint32_t dma_handle;
	struct drm_gem_object *obj;
	struct amdgpu_bo *bo;
	struct drm_device *dev = adev->ddev;
	struct drm_file file_priv = NULL, priv;

	mutex_lock(&dev->struct_mutex);
	list_for_each_entry(priv, &dev->filelist, lhead) {
	rcu_read_lock();
	if (priv->pid == get_pid(task_pid(current)))
	file_priv = priv;
	rcu_read_unlock();
	if (file_priv)
	break;
	}
	mutex_unlock(&dev->struct_mutex);
	r = dev->driver->prime_fd_to_handle(dev,
	file_priv, dmabuf_fd,
	&dma_handle);
	spin_lock(&file_priv->table_lock);

	/* Check if we currently have a reference on the object */
	obj = idr_find(&file_priv->object_idr, dma_handle);
	if (obj == NULL) {
	spin_unlock(&file_priv->table_lock);
	return -EINVAL;
	}
	spin_unlock(&file_priv->table_lock);
	bo = gem_to_amdgpu_bo(obj);
	*handle = (cgs_handle_t)bo;
	return 0;
	}

	static int amdgpu_cgs_free_gpu_mem(void *cgs_device, cgs_handle_t handle)
	{
	struct amdgpu_bo obj = (struct amdgpu_bo )handle;

	if (obj) {
	int r = amdgpu_bo_reserve(obj, false);
	if (likely(r == 0)) {
	amdgpu_bo_kunmap(obj);
	amdgpu_bo_unpin(obj);
	amdgpu_bo_unreserve(obj);
	}
	amdgpu_bo_unref(&obj);

	}
	return 0;
	}

	static int amdgpu_cgs_gmap_gpu_mem(void *cgs_device, cgs_handle_t handle,
	uint64_t *mcaddr)
	{
	int r;
	u64 min_offset, max_offset;
	struct amdgpu_bo obj = (struct amdgpu_bo )handle;

	WARN_ON_ONCE(obj->placement.num_placement > 1);

	min_offset = obj->placements[0].fpfn << PAGE_SHIFT;
	max_offset = obj->placements[0].lpfn << PAGE_SHIFT;

	r = amdgpu_bo_reserve(obj, false);
	if (unlikely(r != 0))
	return r;
	r = amdgpu_bo_pin_restricted(obj, AMDGPU_GEM_DOMAIN_GTT,
	min_offset, max_offset, mcaddr);
	amdgpu_bo_unreserve(obj);
	return r;
	}

	static int amdgpu_cgs_gunmap_gpu_mem(void *cgs_device, cgs_handle_t handle)
	{
	int r;
	struct amdgpu_bo obj = (struct amdgpu_bo )handle;
	r = amdgpu_bo_reserve(obj, false);
	if (unlikely(r != 0))
	return r;
	r = amdgpu_bo_unpin(obj);
	amdgpu_bo_unreserve(obj);
	return r;
	}

	static int amdgpu_cgs_kmap_gpu_mem(void *cgs_device, cgs_handle_t handle,
	void **map)
	{
	int r;
	struct amdgpu_bo obj = (struct amdgpu_bo )handle;
	r = amdgpu_bo_reserve(obj, false);
	if (unlikely(r != 0))
	return r;
	r = amdgpu_bo_kmap(obj, map);
	amdgpu_bo_unreserve(obj);
	return r;
	}

	static int amdgpu_cgs_kunmap_gpu_mem(void *cgs_device, cgs_handle_t handle)
	{
	int r;
	struct amdgpu_bo obj = (struct amdgpu_bo )handle;
	r = amdgpu_bo_reserve(obj, false);
	if (unlikely(r != 0))
	return r;
	amdgpu_bo_kunmap(obj);
	amdgpu_bo_unreserve(obj);
	return r;
	}

	static uint32_t amdgpu_cgs_read_register(void *cgs_device, unsigned offset)
	{
	CGS_FUNC_ADEV;
	return RREG32(offset);
	}

	static void amdgpu_cgs_write_register(void *cgs_device, unsigned offset,
	uint32_t value)
	{
	CGS_FUNC_ADEV;
	WREG32(offset, value);
	}

	static uint32_t amdgpu_cgs_read_ind_register(void *cgs_device,
	enum cgs_ind_reg space,
	unsigned index)
	{
	CGS_FUNC_ADEV;
	switch (space) {
	case CGS_IND_REG__MMIO:
	return RREG32_IDX(index);
	case CGS_IND_REG__PCIE:
	return RREG32_PCIE(index);
	case CGS_IND_REG__SMC:
	return RREG32_SMC(index);
	case CGS_IND_REG__UVD_CTX:
	return RREG32_UVD_CTX(index);
	case CGS_IND_REG__DIDT:
	return RREG32_DIDT(index);
	case CGS_IND_REG__AUDIO_ENDPT:
	DRM_ERROR("audio endpt register access not implemented.\n");
	return 0;
	}
	WARN(1, "Invalid indirect register space");
	return 0;
	}

	static void amdgpu_cgs_write_ind_register(void *cgs_device,
	enum cgs_ind_reg space,
	unsigned index, uint32_t value)
	{
	CGS_FUNC_ADEV;
	switch (space) {
	case CGS_IND_REG__MMIO:
	return WREG32_IDX(index, value);
	case CGS_IND_REG__PCIE:
	return WREG32_PCIE(index, value);
	case CGS_IND_REG__SMC:
	return WREG32_SMC(index, value);
	case CGS_IND_REG__UVD_CTX:
	return WREG32_UVD_CTX(index, value);
	case CGS_IND_REG__DIDT:
	return WREG32_DIDT(index, value);
	case CGS_IND_REG__AUDIO_ENDPT:
	DRM_ERROR("audio endpt register access not implemented.\n");
	return;
	}
	WARN(1, "Invalid indirect register space");
	}

	static uint8_t amdgpu_cgs_read_pci_config_byte(void *cgs_device, unsigned addr)
	{
	CGS_FUNC_ADEV;
	uint8_t val;
	int ret = pci_read_config_byte(adev->pdev, addr, &val);
	if (WARN(ret, "pci_read_config_byte error"))
	return 0;
	return val;
	}

	static uint16_t amdgpu_cgs_read_pci_config_word(void *cgs_device, unsigned addr)
	{
	CGS_FUNC_ADEV;
	uint16_t val;
	int ret = pci_read_config_word(adev->pdev, addr, &val);
	if (WARN(ret, "pci_read_config_word error"))
	return 0;
	return val;
	}

	static uint32_t amdgpu_cgs_read_pci_config_dword(void *cgs_device,
	unsigned addr)
	{
	CGS_FUNC_ADEV;
	uint32_t val;
	int ret = pci_read_config_dword(adev->pdev, addr, &val);
	if (WARN(ret, "pci_read_config_dword error"))
	return 0;
	return val;
	}

	static void amdgpu_cgs_write_pci_config_byte(void *cgs_device, unsigned addr,
	uint8_t value)
	{
	CGS_FUNC_ADEV;
	int ret = pci_write_config_byte(adev->pdev, addr, value);
	WARN(ret, "pci_write_config_byte error");
	}

	static void amdgpu_cgs_write_pci_config_word(void *cgs_device, unsigned addr,
	uint16_t value)
	{
	CGS_FUNC_ADEV;
	int ret = pci_write_config_word(adev->pdev, addr, value);
	WARN(ret, "pci_write_config_word error");
	}

	static void amdgpu_cgs_write_pci_config_dword(void *cgs_device, unsigned addr,
	uint32_t value)
	{
	CGS_FUNC_ADEV;
	int ret = pci_write_config_dword(adev->pdev, addr, value);
	WARN(ret, "pci_write_config_dword error");
	}

	static const void amdgpu_cgs_atom_get_data_table(void cgs_device,
	unsigned table, uint16_t *size,
	uint8_t frev, uint8_t crev)
	{
	CGS_FUNC_ADEV;
	uint16_t data_start;

	if (amdgpu_atom_parse_data_header(
	adev->mode_info.atom_context, table, size,
	frev, crev, &data_start))
	return (uint8_t*)adev->mode_info.atom_context->bios +
	data_start;

	return NULL;
	}

	static int amdgpu_cgs_atom_get_cmd_table_revs(void *cgs_device, unsigned table,
	uint8_t frev, uint8_t crev)
	{
	CGS_FUNC_ADEV;

	if (amdgpu_atom_parse_cmd_header(
	adev->mode_info.atom_context, table,
	frev, crev))
	return 0;

	return -EINVAL;
	}

	static int amdgpu_cgs_atom_exec_cmd_table(void *cgs_device, unsigned table,
	void *args)
	{
	CGS_FUNC_ADEV;

	return amdgpu_atom_execute_table(
	adev->mode_info.atom_context, table, args);
	}

	static int amdgpu_cgs_create_pm_request(void cgs_device, cgs_handle_t request)
	{
	/* TODO */
	return 0;
	}

	static int amdgpu_cgs_destroy_pm_request(void *cgs_device, cgs_handle_t request)
	{
	/* TODO */
	return 0;
	}

	static int amdgpu_cgs_set_pm_request(void *cgs_device, cgs_handle_t request,
	int active)
	{
	/* TODO */
	return 0;
	}

	static int amdgpu_cgs_pm_request_clock(void *cgs_device, cgs_handle_t request,
	enum cgs_clock clock, unsigned freq)
	{
	/* TODO */
	return 0;
	}

	static int amdgpu_cgs_pm_request_engine(void *cgs_device, cgs_handle_t request,
	enum cgs_engine engine, int powered)
	{
	/* TODO */
	return 0;
	}



	static int amdgpu_cgs_pm_query_clock_limits(void *cgs_device,
	enum cgs_clock clock,
	struct cgs_clock_limits *limits)
	{
	/* TODO */
	return 0;
	}

	static int amdgpu_cgs_set_camera_voltages(void *cgs_device, uint32_t mask,
	const uint32_t *voltages)
	{
	DRM_ERROR("not implemented");
	return -EPERM;
	}

	struct cgs_irq_params {
	unsigned src_id;
	cgs_irq_source_set_func_t set;
	cgs_irq_handler_func_t handler;
	void *private_data;
	};

	static int cgs_set_irq_state(struct amdgpu_device *adev,
	struct amdgpu_irq_src *src,
	unsigned type,
	enum amdgpu_interrupt_state state)
	{
	struct cgs_irq_params *irq_params =
	(struct cgs_irq_params *)src->data;
	if (!irq_params)
	return -EINVAL;
	if (!irq_params->set)
	return -EINVAL;
	return irq_params->set(irq_params->private_data,
	irq_params->src_id,
	type,
	(int)state);
	}

	static int cgs_process_irq(struct amdgpu_device *adev,
	struct amdgpu_irq_src *source,
	struct amdgpu_iv_entry *entry)
	{
	struct cgs_irq_params *irq_params =
	(struct cgs_irq_params *)source->data;
	if (!irq_params)
	return -EINVAL;
	if (!irq_params->handler)
	return -EINVAL;
	return irq_params->handler(irq_params->private_data,
	irq_params->src_id,
	entry->iv_entry);
	}

	static const struct amdgpu_irq_src_funcs cgs_irq_funcs = {
	.set = cgs_set_irq_state,
	.process = cgs_process_irq,
	};

	static int amdgpu_cgs_add_irq_source(void *cgs_device, unsigned src_id,
	unsigned num_types,
	cgs_irq_source_set_func_t set,
	cgs_irq_handler_func_t handler,
	void *private_data)
	{
	CGS_FUNC_ADEV;
	int ret = 0;
	struct cgs_irq_params *irq_params;
	struct amdgpu_irq_src *source =
	kzalloc(sizeof(struct amdgpu_irq_src), GFP_KERNEL);
	if (!source)
	return -ENOMEM;
	irq_params =
	kzalloc(sizeof(struct cgs_irq_params), GFP_KERNEL);
	if (!irq_params) {
	kfree(source);
	return -ENOMEM;
	}
	source->num_types = num_types;
	source->funcs = &cgs_irq_funcs;
	irq_params->src_id = src_id;
	irq_params->set = set;
	irq_params->handler = handler;
	irq_params->private_data = private_data;
	source->data = (void *)irq_params;
	ret = amdgpu_irq_add_id(adev, src_id, source);
	if (ret) {
	kfree(irq_params);
	kfree(source);
	}

	return ret;
	}

	static int amdgpu_cgs_irq_get(void *cgs_device, unsigned src_id, unsigned type)
	{
	CGS_FUNC_ADEV;
	return amdgpu_irq_get(adev, adev->irq.sources[src_id], type);
	}

	static int amdgpu_cgs_irq_put(void *cgs_device, unsigned src_id, unsigned type)
	{
	CGS_FUNC_ADEV;
	return amdgpu_irq_put(adev, adev->irq.sources[src_id], type);
	}

	int amdgpu_cgs_set_clockgating_state(void *cgs_device,
	enum amd_ip_block_type block_type,
	enum amd_clockgating_state state)
	{
	CGS_FUNC_ADEV;
	int i, r = -1;

	for (i = 0; i < adev->num_ip_blocks; i++) {
	if (!adev->ip_block_status[i].valid)
	continue;

	if (adev->ip_blocks[i].type == block_type) {
	r = adev->ip_blocks[i].funcs->set_clockgating_state(
	(void *)adev,
	state);
	break;
	}
	}
	return r;
	}

	int amdgpu_cgs_set_powergating_state(void *cgs_device,
	enum amd_ip_block_type block_type,
	enum amd_powergating_state state)
	{
	CGS_FUNC_ADEV;
	int i, r = -1;

	for (i = 0; i < adev->num_ip_blocks; i++) {
	if (!adev->ip_block_status[i].valid)
	continue;

	if (adev->ip_blocks[i].type == block_type) {
	r = adev->ip_blocks[i].funcs->set_powergating_state(
	(void *)adev,
	state);
	break;
	}
	}
	return r;
	}


	static uint32_t fw_type_convert(void *cgs_device, uint32_t fw_type)
	{
	CGS_FUNC_ADEV;
	enum AMDGPU_UCODE_ID result = AMDGPU_UCODE_ID_MAXIMUM;

	switch (fw_type) {
	case CGS_UCODE_ID_SDMA0:
	result = AMDGPU_UCODE_ID_SDMA0;
	break;
	case CGS_UCODE_ID_SDMA1:
	result = AMDGPU_UCODE_ID_SDMA1;
	break;
	case CGS_UCODE_ID_CP_CE:
	result = AMDGPU_UCODE_ID_CP_CE;
	break;
	case CGS_UCODE_ID_CP_PFP:
	result = AMDGPU_UCODE_ID_CP_PFP;
	break;
	case CGS_UCODE_ID_CP_ME:
	result = AMDGPU_UCODE_ID_CP_ME;
	break;
	case CGS_UCODE_ID_CP_MEC:
	case CGS_UCODE_ID_CP_MEC_JT1:
	result = AMDGPU_UCODE_ID_CP_MEC1;
	break;
	case CGS_UCODE_ID_CP_MEC_JT2:
	if (adev->asic_type == CHIP_TONGA)
	result = AMDGPU_UCODE_ID_CP_MEC2;
	else if (adev->asic_type == CHIP_CARRIZO)
	result = AMDGPU_UCODE_ID_CP_MEC1;
	break;
	case CGS_UCODE_ID_RLC_G:
	result = AMDGPU_UCODE_ID_RLC_G;
	break;
	default:
	DRM_ERROR("Firmware type not supported\n");
	}
	return result;
	}

	static int amdgpu_cgs_get_firmware_info(void *cgs_device,
	enum cgs_ucode_id type,
	struct cgs_firmware_info *info)
	{
	CGS_FUNC_ADEV;

	if (CGS_UCODE_ID_SMU != type) {
	uint64_t gpu_addr;
	uint32_t data_size;
	const struct gfx_firmware_header_v1_0 *header;
	enum AMDGPU_UCODE_ID id;
	struct amdgpu_firmware_info *ucode;

	id = fw_type_convert(cgs_device, type);
	ucode = &adev->firmware.ucode[id];
	if (ucode->fw == NULL)
	return -EINVAL;

	gpu_addr = ucode->mc_addr;
	header = (const struct gfx_firmware_header_v1_0 *)ucode->fw->data;
	data_size = le32_to_cpu(header->header.ucode_size_bytes);

	if ((type == CGS_UCODE_ID_CP_MEC_JT1) \|\|
	(type == CGS_UCODE_ID_CP_MEC_JT2)) {
	gpu_addr += le32_to_cpu(header->jt_offset) << 2;
	data_size = le32_to_cpu(header->jt_size) << 2;
	}
	info->mc_addr = gpu_addr;
	info->image_size = data_size;
	info->version = (uint16_t)le32_to_cpu(header->header.ucode_version);
	info->feature_version = (uint16_t)le32_to_cpu(header->ucode_feature_version);
	} else {
	char fw_name[30] = {0};
	int err = 0;
	uint32_t ucode_size;
	uint32_t ucode_start_address;
	const uint8_t *src;
	const struct smc_firmware_header_v1_0 *hdr;

	switch (adev->asic_type) {
	case CHIP_TONGA:
	strcpy(fw_name, "amdgpu/tonga_smc.bin");
	break;
	default:
	DRM_ERROR("SMC firmware not supported\n");
	return -EINVAL;
	}

	err = request_firmware(&adev->pm.fw, fw_name, adev->dev);
	if (err) {
	DRM_ERROR("Failed to request firmware\n");
	return err;
	}

	err = amdgpu_ucode_validate(adev->pm.fw);
	if (err) {
	DRM_ERROR("Failed to load firmware \"%s\"", fw_name);
	release_firmware(adev->pm.fw);
	adev->pm.fw = NULL;
	return err;
	}

	hdr = (const struct smc_firmware_header_v1_0 *) adev->pm.fw->data;
	adev->pm.fw_version = le32_to_cpu(hdr->header.ucode_version);
	ucode_size = le32_to_cpu(hdr->header.ucode_size_bytes);
	ucode_start_address = le32_to_cpu(hdr->ucode_start_addr);
	src = (const uint8_t *)(adev->pm.fw->data +
	le32_to_cpu(hdr->header.ucode_array_offset_bytes));

	info->version = adev->pm.fw_version;
	info->image_size = ucode_size;
	info->kptr = (void *)src;
	}
	return 0;
	}

	static const struct cgs_ops amdgpu_cgs_ops = {
	amdgpu_cgs_gpu_mem_info,
	amdgpu_cgs_gmap_kmem,
	amdgpu_cgs_gunmap_kmem,
	amdgpu_cgs_alloc_gpu_mem,
	amdgpu_cgs_free_gpu_mem,
	amdgpu_cgs_gmap_gpu_mem,
	amdgpu_cgs_gunmap_gpu_mem,
	amdgpu_cgs_kmap_gpu_mem,
	amdgpu_cgs_kunmap_gpu_mem,
	amdgpu_cgs_read_register,
	amdgpu_cgs_write_register,
	amdgpu_cgs_read_ind_register,
	amdgpu_cgs_write_ind_register,
	amdgpu_cgs_read_pci_config_byte,
	amdgpu_cgs_read_pci_config_word,
	amdgpu_cgs_read_pci_config_dword,
	amdgpu_cgs_write_pci_config_byte,
	amdgpu_cgs_write_pci_config_word,
	amdgpu_cgs_write_pci_config_dword,
	amdgpu_cgs_atom_get_data_table,
	amdgpu_cgs_atom_get_cmd_table_revs,
	amdgpu_cgs_atom_exec_cmd_table,
	amdgpu_cgs_create_pm_request,
	amdgpu_cgs_destroy_pm_request,
	amdgpu_cgs_set_pm_request,
	amdgpu_cgs_pm_request_clock,
	amdgpu_cgs_pm_request_engine,
	amdgpu_cgs_pm_query_clock_limits,
	amdgpu_cgs_set_camera_voltages,
	amdgpu_cgs_get_firmware_info,
	amdgpu_cgs_set_powergating_state,
	amdgpu_cgs_set_clockgating_state
	};

	static const struct cgs_os_ops amdgpu_cgs_os_ops = {
	amdgpu_cgs_import_gpu_mem,
	amdgpu_cgs_add_irq_source,
	amdgpu_cgs_irq_get,
	amdgpu_cgs_irq_put
	};

	void amdgpu_cgs_create_device(struct amdgpu_device adev)
	{
	struct amdgpu_cgs_device *cgs_device =
	kmalloc(sizeof(*cgs_device), GFP_KERNEL);

	if (!cgs_device) {
	DRM_ERROR("Couldn't allocate CGS device structure\n");
	return NULL;
	}

	cgs_device->base.ops = &amdgpu_cgs_ops;
	cgs_device->base.os_ops = &amdgpu_cgs_os_ops;
	cgs_device->adev = adev;

	return cgs_device;
	}

	void amdgpu_cgs_destroy_device(void *cgs_device)
	{
	kfree(cgs_device);
	}