drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c - kernel/msm-5.4 - Gitiles

 /*
  * Copyright 2008 Advanced Micro Devices, Inc.
  * Copyright 2008 Red Hat Inc.
  * Copyright 2009 Jerome Glisse.
  *
  * 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.
  *
  * Authors: Dave Airlie
  *          Alex Deucher
  *          Jerome Glisse
  */
 #include <drm/drmP.h>
 #include "amdgpu.h"
 #include <drm/amdgpu_drm.h>
 #include "amdgpu_uvd.h"
 #include "amdgpu_vce.h"

 #include <linux/vga_switcheroo.h>
 #include <linux/slab.h>
 #include <linux/pm_runtime.h>

 #if defined(CONFIG_VGA_SWITCHEROO)
 bool amdgpu_has_atpx(void);
 #else
 static inline bool amdgpu_has_atpx(void) { return false; }
 #endif

 /**
  * amdgpu_driver_unload_kms - Main unload function for KMS.
  *
  * @dev: drm dev pointer
  *
  * This is the main unload function for KMS (all asics).
  * Returns 0 on success.
  */
 int amdgpu_driver_unload_kms(struct drm_device *dev)
 {
 	struct amdgpu_device *adev = dev->dev_private;

 	if (adev == NULL)
 		return 0;

 	if (adev->rmmio == NULL)
 		goto done_free;

 	pm_runtime_get_sync(dev->dev);

 	amdgpu_acpi_fini(adev);

 	amdgpu_device_fini(adev);

 done_free:
 	kfree(adev);
 	dev->dev_private = NULL;
 	return 0;
 }

 /**
  * amdgpu_driver_load_kms - Main load function for KMS.
  *
  * @dev: drm dev pointer
  * @flags: device flags
  *
  * This is the main load function for KMS (all asics).
  * Returns 0 on success, error on failure.
  */
 int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags)
 {
 	struct amdgpu_device *adev;
 	int r, acpi_status;

 	adev = kzalloc(sizeof(struct amdgpu_device), GFP_KERNEL);
 	if (adev == NULL) {
 		return -ENOMEM;
 	}
 	dev->dev_private = (void *)adev;

 	if ((amdgpu_runtime_pm != 0) &&
 	    amdgpu_has_atpx() &&
 	    ((flags & AMDGPU_IS_APU) == 0))
 		flags |= AMDGPU_IS_PX;

 	/* amdgpu_device_init should report only fatal error
 	 * like memory allocation failure or iomapping failure,
 	 * or memory manager initialization failure, it must
 	 * properly initialize the GPU MC controller and permit
 	 * VRAM allocation
 	 */
 	r = amdgpu_device_init(adev, dev, dev->pdev, flags);
 	if (r) {
 		dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
 		goto out;
 	}

 	/* Call ACPI methods: require modeset init
 	 * but failure is not fatal
 	 */
 	if (!r) {
 		acpi_status = amdgpu_acpi_init(adev);
 		if (acpi_status)
 		dev_dbg(&dev->pdev->dev,
 				"Error during ACPI methods call\n");
 	}

 	if (amdgpu_device_is_px(dev)) {
 		pm_runtime_use_autosuspend(dev->dev);
 		pm_runtime_set_autosuspend_delay(dev->dev, 5000);
 		pm_runtime_set_active(dev->dev);
 		pm_runtime_allow(dev->dev);
 		pm_runtime_mark_last_busy(dev->dev);
 		pm_runtime_put_autosuspend(dev->dev);
 	}

 out:
 	if (r)
 		amdgpu_driver_unload_kms(dev);


 	return r;
 }

 /*
  * Userspace get information ioctl
  */
 /**
  * amdgpu_info_ioctl - answer a device specific request.
  *
  * @adev: amdgpu device pointer
  * @data: request object
  * @filp: drm filp
  *
  * This function is used to pass device specific parameters to the userspace
  * drivers.  Examples include: pci device id, pipeline parms, tiling params,
  * etc. (all asics).
  * Returns 0 on success, -EINVAL on failure.
  */
 static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 {
 	struct amdgpu_device *adev = dev->dev_private;
 	struct drm_amdgpu_info *info = data;
 	struct amdgpu_mode_info *minfo = &adev->mode_info;
 	void __user *out = (void __user *)(long)info->return_pointer;
 	uint32_t size = info->return_size;
 	struct drm_crtc *crtc;
 	uint32_t ui32 = 0;
 	uint64_t ui64 = 0;
 	int i, found;

 	if (!info->return_size || !info->return_pointer)
 		return -EINVAL;

 	switch (info->query) {
 	case AMDGPU_INFO_ACCEL_WORKING:
 		ui32 = adev->accel_working;
 		return copy_to_user(out, &ui32, min(size, 4u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_CRTC_FROM_ID:
 		for (i = 0, found = 0; i < adev->mode_info.num_crtc; i++) {
 			crtc = (struct drm_crtc *)minfo->crtcs[i];
 			if (crtc && crtc->base.id == info->mode_crtc.id) {
 				struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 				ui32 = amdgpu_crtc->crtc_id;
 				found = 1;
 				break;
 			}
 		}
 		if (!found) {
 			DRM_DEBUG_KMS("unknown crtc id %d\n", info->mode_crtc.id);
 			return -EINVAL;
 		}
 		return copy_to_user(out, &ui32, min(size, 4u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_HW_IP_INFO: {
 		struct drm_amdgpu_info_hw_ip ip = {};
 		enum amd_ip_block_type type;
 		uint32_t ring_mask = 0;
 		uint32_t ib_start_alignment = 0;
 		uint32_t ib_size_alignment = 0;

 		if (info->query_hw_ip.ip_instance >= AMDGPU_HW_IP_INSTANCE_MAX_COUNT)
 			return -EINVAL;

 		switch (info->query_hw_ip.type) {
 		case AMDGPU_HW_IP_GFX:
 			type = AMD_IP_BLOCK_TYPE_GFX;
 			for (i = 0; i < adev->gfx.num_gfx_rings; i++)
 				ring_mask |= ((adev->gfx.gfx_ring[i].ready ? 1 : 0) << i);
 			ib_start_alignment = AMDGPU_GPU_PAGE_SIZE;
 			ib_size_alignment = 8;
 			break;
 		case AMDGPU_HW_IP_COMPUTE:
 			type = AMD_IP_BLOCK_TYPE_GFX;
 			for (i = 0; i < adev->gfx.num_compute_rings; i++)
 				ring_mask |= ((adev->gfx.compute_ring[i].ready ? 1 : 0) << i);
 			ib_start_alignment = AMDGPU_GPU_PAGE_SIZE;
 			ib_size_alignment = 8;
 			break;
 		case AMDGPU_HW_IP_DMA:
 			type = AMD_IP_BLOCK_TYPE_SDMA;
 			ring_mask = adev->sdma[0].ring.ready ? 1 : 0;
 			ring_mask |= ((adev->sdma[1].ring.ready ? 1 : 0) << 1);
 			ib_start_alignment = AMDGPU_GPU_PAGE_SIZE;
 			ib_size_alignment = 1;
 			break;
 		case AMDGPU_HW_IP_UVD:
 			type = AMD_IP_BLOCK_TYPE_UVD;
 			ring_mask = adev->uvd.ring.ready ? 1 : 0;
 			ib_start_alignment = AMDGPU_GPU_PAGE_SIZE;
 			ib_size_alignment = 8;
 			break;
 		case AMDGPU_HW_IP_VCE:
 			type = AMD_IP_BLOCK_TYPE_VCE;
 			for (i = 0; i < AMDGPU_MAX_VCE_RINGS; i++)
 				ring_mask |= ((adev->vce.ring[i].ready ? 1 : 0) << i);
 			ib_start_alignment = AMDGPU_GPU_PAGE_SIZE;
 			ib_size_alignment = 8;
 			break;
 		default:
 			return -EINVAL;
 		}

 		for (i = 0; i < adev->num_ip_blocks; i++) {
 			if (adev->ip_blocks[i].type == type &&
 			    adev->ip_block_status[i].valid) {
 				ip.hw_ip_version_major = adev->ip_blocks[i].major;
 				ip.hw_ip_version_minor = adev->ip_blocks[i].minor;
 				ip.capabilities_flags = 0;
 				ip.available_rings = ring_mask;
 				ip.ib_start_alignment = ib_start_alignment;
 				ip.ib_size_alignment = ib_size_alignment;
 				break;
 			}
 		}
 		return copy_to_user(out, &ip,
 				    min((size_t)size, sizeof(ip))) ? -EFAULT : 0;
 	}
 	case AMDGPU_INFO_HW_IP_COUNT: {
 		enum amd_ip_block_type type;
 		uint32_t count = 0;

 		switch (info->query_hw_ip.type) {
 		case AMDGPU_HW_IP_GFX:
 			type = AMD_IP_BLOCK_TYPE_GFX;
 			break;
 		case AMDGPU_HW_IP_COMPUTE:
 			type = AMD_IP_BLOCK_TYPE_GFX;
 			break;
 		case AMDGPU_HW_IP_DMA:
 			type = AMD_IP_BLOCK_TYPE_SDMA;
 			break;
 		case AMDGPU_HW_IP_UVD:
 			type = AMD_IP_BLOCK_TYPE_UVD;
 			break;
 		case AMDGPU_HW_IP_VCE:
 			type = AMD_IP_BLOCK_TYPE_VCE;
 			break;
 		default:
 			return -EINVAL;
 		}

 		for (i = 0; i < adev->num_ip_blocks; i++)
 			if (adev->ip_blocks[i].type == type &&
 			    adev->ip_block_status[i].valid &&
 			    count < AMDGPU_HW_IP_INSTANCE_MAX_COUNT)
 				count++;

 		return copy_to_user(out, &count, min(size, 4u)) ? -EFAULT : 0;
 	}
 	case AMDGPU_INFO_TIMESTAMP:
 		ui64 = amdgpu_asic_get_gpu_clock_counter(adev);
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_FW_VERSION: {
 		struct drm_amdgpu_info_firmware fw_info;

 		/* We only support one instance of each IP block right now. */
 		if (info->query_fw.ip_instance != 0)
 			return -EINVAL;

 		switch (info->query_fw.fw_type) {
 		case AMDGPU_INFO_FW_VCE:
 			fw_info.ver = adev->vce.fw_version;
 			fw_info.feature = adev->vce.fb_version;
 			break;
 		case AMDGPU_INFO_FW_UVD:
 			fw_info.ver = 0;
 			fw_info.feature = 0;
 			break;
 		case AMDGPU_INFO_FW_GMC:
 			fw_info.ver = adev->mc.fw_version;
 			fw_info.feature = 0;
 			break;
 		case AMDGPU_INFO_FW_GFX_ME:
 			fw_info.ver = adev->gfx.me_fw_version;
 			fw_info.feature = adev->gfx.me_feature_version;
 			break;
 		case AMDGPU_INFO_FW_GFX_PFP:
 			fw_info.ver = adev->gfx.pfp_fw_version;
 			fw_info.feature = adev->gfx.pfp_feature_version;
 			break;
 		case AMDGPU_INFO_FW_GFX_CE:
 			fw_info.ver = adev->gfx.ce_fw_version;
 			fw_info.feature = adev->gfx.ce_feature_version;
 			break;
 		case AMDGPU_INFO_FW_GFX_RLC:
 			fw_info.ver = adev->gfx.rlc_fw_version;
 			fw_info.feature = adev->gfx.rlc_feature_version;
 			break;
 		case AMDGPU_INFO_FW_GFX_MEC:
 			if (info->query_fw.index == 0) {
 				fw_info.ver = adev->gfx.mec_fw_version;
 				fw_info.feature = adev->gfx.mec_feature_version;
 			} else if (info->query_fw.index == 1) {
 				fw_info.ver = adev->gfx.mec2_fw_version;
 				fw_info.feature = adev->gfx.mec2_feature_version;
 			} else
 				return -EINVAL;
 			break;
 		case AMDGPU_INFO_FW_SMC:
 			fw_info.ver = adev->pm.fw_version;
 			fw_info.feature = 0;
 			break;
 		case AMDGPU_INFO_FW_SDMA:
 			if (info->query_fw.index >= 2)
 				return -EINVAL;
 			fw_info.ver = adev->sdma[info->query_fw.index].fw_version;
 			fw_info.feature = adev->sdma[info->query_fw.index].feature_version;
 			break;
 		default:
 			return -EINVAL;
 		}
 		return copy_to_user(out, &fw_info,
 				    min((size_t)size, sizeof(fw_info))) ? -EFAULT : 0;
 	}
 	case AMDGPU_INFO_NUM_BYTES_MOVED:
 		ui64 = atomic64_read(&adev->num_bytes_moved);
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_VRAM_USAGE:
 		ui64 = atomic64_read(&adev->vram_usage);
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_VIS_VRAM_USAGE:
 		ui64 = atomic64_read(&adev->vram_vis_usage);
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_GTT_USAGE:
 		ui64 = atomic64_read(&adev->gtt_usage);
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_GDS_CONFIG: {
 		struct drm_amdgpu_info_gds gds_info;

 		memset(&gds_info, 0, sizeof(gds_info));
 		gds_info.gds_gfx_partition_size = adev->gds.mem.gfx_partition_size >> AMDGPU_GDS_SHIFT;
 		gds_info.compute_partition_size = adev->gds.mem.cs_partition_size >> AMDGPU_GDS_SHIFT;
 		gds_info.gds_total_size = adev->gds.mem.total_size >> AMDGPU_GDS_SHIFT;
 		gds_info.gws_per_gfx_partition = adev->gds.gws.gfx_partition_size >> AMDGPU_GWS_SHIFT;
 		gds_info.gws_per_compute_partition = adev->gds.gws.cs_partition_size >> AMDGPU_GWS_SHIFT;
 		gds_info.oa_per_gfx_partition = adev->gds.oa.gfx_partition_size >> AMDGPU_OA_SHIFT;
 		gds_info.oa_per_compute_partition = adev->gds.oa.cs_partition_size >> AMDGPU_OA_SHIFT;
 		return copy_to_user(out, &gds_info,
 				    min((size_t)size, sizeof(gds_info))) ? -EFAULT : 0;
 	}
 	case AMDGPU_INFO_VRAM_GTT: {
 		struct drm_amdgpu_info_vram_gtt vram_gtt;

 		vram_gtt.vram_size = adev->mc.real_vram_size;
 		vram_gtt.vram_cpu_accessible_size = adev->mc.visible_vram_size;
 		vram_gtt.vram_cpu_accessible_size -= adev->vram_pin_size;
 		vram_gtt.gtt_size  = adev->mc.gtt_size;
 		vram_gtt.gtt_size -= adev->gart_pin_size;
 		return copy_to_user(out, &vram_gtt,
 				    min((size_t)size, sizeof(vram_gtt))) ? -EFAULT : 0;
 	}
 	case AMDGPU_INFO_READ_MMR_REG: {
 		unsigned n, alloc_size = info->read_mmr_reg.count * 4;
 		uint32_t *regs;
 		unsigned se_num = (info->read_mmr_reg.instance >>
 				   AMDGPU_INFO_MMR_SE_INDEX_SHIFT) &
 				  AMDGPU_INFO_MMR_SE_INDEX_MASK;
 		unsigned sh_num = (info->read_mmr_reg.instance >>
 				   AMDGPU_INFO_MMR_SH_INDEX_SHIFT) &
 				  AMDGPU_INFO_MMR_SH_INDEX_MASK;

 		/* set full masks if the userspace set all bits
 		 * in the bitfields */
 		if (se_num == AMDGPU_INFO_MMR_SE_INDEX_MASK)
 			se_num = 0xffffffff;
 		if (sh_num == AMDGPU_INFO_MMR_SH_INDEX_MASK)
 			sh_num = 0xffffffff;

 		regs = kmalloc(alloc_size, GFP_KERNEL);
 		if (!regs)
 			return -ENOMEM;

 		for (i = 0; i < info->read_mmr_reg.count; i++)
 			if (amdgpu_asic_read_register(adev, se_num, sh_num,
 						      info->read_mmr_reg.dword_offset + i,
 						      &regs[i])) {
 				DRM_DEBUG_KMS("unallowed offset %#x\n",
 					      info->read_mmr_reg.dword_offset + i);
 				kfree(regs);
 				return -EFAULT;
 			}
 		n = copy_to_user(out, regs, min(size, alloc_size));
 		kfree(regs);
 		return n ? -EFAULT : 0;
 	}
 	case AMDGPU_INFO_DEV_INFO: {
 		struct drm_amdgpu_info_device dev_info = {};
 		struct amdgpu_cu_info cu_info;

 		dev_info.device_id = dev->pdev->device;
 		dev_info.chip_rev = adev->rev_id;
 		dev_info.external_rev = adev->external_rev_id;
 		dev_info.pci_rev = dev->pdev->revision;
 		dev_info.family = adev->family;
 		dev_info.num_shader_engines = adev->gfx.config.max_shader_engines;
 		dev_info.num_shader_arrays_per_engine = adev->gfx.config.max_sh_per_se;
 		/* return all clocks in KHz */
 		dev_info.gpu_counter_freq = amdgpu_asic_get_xclk(adev) * 10;
 		if (adev->pm.dpm_enabled) {
 			dev_info.max_engine_clock =
 				adev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk * 10;
 			dev_info.max_memory_clock =
 				adev->pm.dpm.dyn_state.max_clock_voltage_on_ac.mclk * 10;
 		} else {
 			dev_info.max_engine_clock = adev->pm.default_sclk * 10;
 			dev_info.max_memory_clock = adev->pm.default_mclk * 10;
 		}
 		dev_info.enabled_rb_pipes_mask = adev->gfx.config.backend_enable_mask;
 		dev_info.num_rb_pipes = adev->gfx.config.max_backends_per_se *
 					adev->gfx.config.max_shader_engines;
 		dev_info.num_hw_gfx_contexts = adev->gfx.config.max_hw_contexts;
 		dev_info._pad = 0;
 		dev_info.ids_flags = 0;
 		if (adev->flags & AMDGPU_IS_APU)
 			dev_info.ids_flags |= AMDGPU_IDS_FLAGS_FUSION;
 		dev_info.virtual_address_offset = AMDGPU_VA_RESERVED_SIZE;
 		dev_info.virtual_address_max = (uint64_t)adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
 		dev_info.virtual_address_alignment = max(PAGE_SIZE, 0x10000UL);
 		dev_info.pte_fragment_size = (1 << AMDGPU_LOG2_PAGES_PER_FRAG) *
 					     AMDGPU_GPU_PAGE_SIZE;
 		dev_info.gart_page_size = AMDGPU_GPU_PAGE_SIZE;

 		amdgpu_asic_get_cu_info(adev, &cu_info);
 		dev_info.cu_active_number = cu_info.number;
 		dev_info.cu_ao_mask = cu_info.ao_cu_mask;
 		dev_info.ce_ram_size = adev->gfx.ce_ram_size;
 		memcpy(&dev_info.cu_bitmap[0], &cu_info.bitmap[0], sizeof(cu_info.bitmap));
 		dev_info.vram_type = adev->mc.vram_type;
 		dev_info.vram_bit_width = adev->mc.vram_width;
 		dev_info.vce_harvest_config = adev->vce.harvest_config;

 		return copy_to_user(out, &dev_info,
 				    min((size_t)size, sizeof(dev_info))) ? -EFAULT : 0;
 	}
 	default:
 		DRM_DEBUG_KMS("Invalid request %d\n", info->query);
 		return -EINVAL;
 	}
 	return 0;
 }


 /*
  * Outdated mess for old drm with Xorg being in charge (void function now).
  */
 /**
  * amdgpu_driver_firstopen_kms - drm callback for last close
  *
  * @dev: drm dev pointer
  *
  * Switch vga switcheroo state after last close (all asics).
  */
 void amdgpu_driver_lastclose_kms(struct drm_device *dev)
 {
 	vga_switcheroo_process_delayed_switch();
 }

 /**
  * amdgpu_driver_open_kms - drm callback for open
  *
  * @dev: drm dev pointer
  * @file_priv: drm file
  *
  * On device open, init vm on cayman+ (all asics).
  * Returns 0 on success, error on failure.
  */
 int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 {
 	struct amdgpu_device *adev = dev->dev_private;
 	struct amdgpu_fpriv *fpriv;
 	int r;

 	file_priv->driver_priv = NULL;

 	r = pm_runtime_get_sync(dev->dev);
 	if (r < 0)
 		return r;

 	fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
 	if (unlikely(!fpriv))
 		return -ENOMEM;

 	r = amdgpu_vm_init(adev, &fpriv->vm);
 	if (r)
 		goto error_free;

 	mutex_init(&fpriv->bo_list_lock);
 	idr_init(&fpriv->bo_list_handles);

 	/* init context manager */
 	mutex_init(&fpriv->ctx_mgr.lock);
 	idr_init(&fpriv->ctx_mgr.ctx_handles);
 	fpriv->ctx_mgr.adev = adev;

 	file_priv->driver_priv = fpriv;

 	pm_runtime_mark_last_busy(dev->dev);
 	pm_runtime_put_autosuspend(dev->dev);
 	return 0;

 error_free:
 	kfree(fpriv);

 	return r;
 }

 /**
  * amdgpu_driver_postclose_kms - drm callback for post close
  *
  * @dev: drm dev pointer
  * @file_priv: drm file
  *
  * On device post close, tear down vm on cayman+ (all asics).
  */
 void amdgpu_driver_postclose_kms(struct drm_device *dev,
 				 struct drm_file *file_priv)
 {
 	struct amdgpu_device *adev = dev->dev_private;
 	struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
 	struct amdgpu_bo_list *list;
 	int handle;

 	if (!fpriv)
 		return;

 	amdgpu_vm_fini(adev, &fpriv->vm);

 	idr_for_each_entry(&fpriv->bo_list_handles, list, handle)
 		amdgpu_bo_list_free(list);

 	idr_destroy(&fpriv->bo_list_handles);
 	mutex_destroy(&fpriv->bo_list_lock);

 	/* release context */
 	amdgpu_ctx_fini(fpriv);

 	kfree(fpriv);
 	file_priv->driver_priv = NULL;
 }

 /**
  * amdgpu_driver_preclose_kms - drm callback for pre close
  *
  * @dev: drm dev pointer
  * @file_priv: drm file
  *
  * On device pre close, tear down hyperz and cmask filps on r1xx-r5xx
  * (all asics).
  */
 void amdgpu_driver_preclose_kms(struct drm_device *dev,
 				struct drm_file *file_priv)
 {
 	struct amdgpu_device *adev = dev->dev_private;

 	amdgpu_uvd_free_handles(adev, file_priv);
 	amdgpu_vce_free_handles(adev, file_priv);
 }

 /*
  * VBlank related functions.
  */
 /**
  * amdgpu_get_vblank_counter_kms - get frame count
  *
  * @dev: drm dev pointer
  * @crtc: crtc to get the frame count from
  *
  * Gets the frame count on the requested crtc (all asics).
  * Returns frame count on success, -EINVAL on failure.
  */
 u32 amdgpu_get_vblank_counter_kms(struct drm_device *dev, int crtc)
 {
 	struct amdgpu_device *adev = dev->dev_private;

 	if (crtc < 0 || crtc >= adev->mode_info.num_crtc) {
 		DRM_ERROR("Invalid crtc %d\n", crtc);
 		return -EINVAL;
 	}

 	return amdgpu_display_vblank_get_counter(adev, crtc);
 }

 /**
  * amdgpu_enable_vblank_kms - enable vblank interrupt
  *
  * @dev: drm dev pointer
  * @crtc: crtc to enable vblank interrupt for
  *
  * Enable the interrupt on the requested crtc (all asics).
  * Returns 0 on success, -EINVAL on failure.
  */
 int amdgpu_enable_vblank_kms(struct drm_device *dev, int crtc)
 {
 	struct amdgpu_device *adev = dev->dev_private;
 	int idx = amdgpu_crtc_idx_to_irq_type(adev, crtc);

 	return amdgpu_irq_get(adev, &adev->crtc_irq, idx);
 }

 /**
  * amdgpu_disable_vblank_kms - disable vblank interrupt
  *
  * @dev: drm dev pointer
  * @crtc: crtc to disable vblank interrupt for
  *
  * Disable the interrupt on the requested crtc (all asics).
  */
 void amdgpu_disable_vblank_kms(struct drm_device *dev, int crtc)
 {
 	struct amdgpu_device *adev = dev->dev_private;
 	int idx = amdgpu_crtc_idx_to_irq_type(adev, crtc);

 	amdgpu_irq_put(adev, &adev->crtc_irq, idx);
 }

 /**
  * amdgpu_get_vblank_timestamp_kms - get vblank timestamp
  *
  * @dev: drm dev pointer
  * @crtc: crtc to get the timestamp for
  * @max_error: max error
  * @vblank_time: time value
  * @flags: flags passed to the driver
  *
  * Gets the timestamp on the requested crtc based on the
  * scanout position.  (all asics).
  * Returns postive status flags on success, negative error on failure.
  */
 int amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
 				    int *max_error,
 				    struct timeval *vblank_time,
 				    unsigned flags)
 {
 	struct drm_crtc *drmcrtc;
 	struct amdgpu_device *adev = dev->dev_private;

 	if (crtc < 0 || crtc >= dev->num_crtcs) {
 		DRM_ERROR("Invalid crtc %d\n", crtc);
 		return -EINVAL;
 	}

 	/* Get associated drm_crtc: */
 	drmcrtc = &adev->mode_info.crtcs[crtc]->base;

 	/* Helper routine in DRM core does all the work: */
 	return drm_calc_vbltimestamp_from_scanoutpos(dev, crtc, max_error,
 						     vblank_time, flags,
 						     drmcrtc, &drmcrtc->hwmode);
 }

 const struct drm_ioctl_desc amdgpu_ioctls_kms[] = {
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_CREATE, amdgpu_gem_create_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_CTX, amdgpu_ctx_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_BO_LIST, amdgpu_bo_list_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	/* KMS */
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_MMAP, amdgpu_gem_mmap_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_WAIT_IDLE, amdgpu_gem_wait_idle_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_CS, amdgpu_cs_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_INFO, amdgpu_info_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_WAIT_CS, amdgpu_cs_wait_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_METADATA, amdgpu_gem_metadata_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_VA, amdgpu_gem_va_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_OP, amdgpu_gem_op_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_USERPTR, amdgpu_gem_userptr_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
 };
 int amdgpu_max_kms_ioctl = ARRAY_SIZE(amdgpu_ioctls_kms);
	/*
	* Copyright 2008 Advanced Micro Devices, Inc.
	* Copyright 2008 Red Hat Inc.
	* Copyright 2009 Jerome Glisse.
	*
	* 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.
	*
	* Authors: Dave Airlie
	* Alex Deucher
	* Jerome Glisse
	*/
	#include <drm/drmP.h>
	#include "amdgpu.h"
	#include <drm/amdgpu_drm.h>
	#include "amdgpu_uvd.h"
	#include "amdgpu_vce.h"

	#include <linux/vga_switcheroo.h>
	#include <linux/slab.h>
	#include <linux/pm_runtime.h>

	#if defined(CONFIG_VGA_SWITCHEROO)
	bool amdgpu_has_atpx(void);
	#else
	static inline bool amdgpu_has_atpx(void) { return false; }
	#endif

	/**
	* amdgpu_driver_unload_kms - Main unload function for KMS.
	*
	* @dev: drm dev pointer
	*
	* This is the main unload function for KMS (all asics).
	* Returns 0 on success.
	*/
	int amdgpu_driver_unload_kms(struct drm_device *dev)
	{
	struct amdgpu_device *adev = dev->dev_private;

	if (adev == NULL)
	return 0;

	if (adev->rmmio == NULL)
	goto done_free;

	pm_runtime_get_sync(dev->dev);

	amdgpu_acpi_fini(adev);

	amdgpu_device_fini(adev);

	done_free:
	kfree(adev);
	dev->dev_private = NULL;
	return 0;
	}

	/**
	* amdgpu_driver_load_kms - Main load function for KMS.
	*
	* @dev: drm dev pointer
	* @flags: device flags
	*
	* This is the main load function for KMS (all asics).
	* Returns 0 on success, error on failure.
	*/
	int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags)
	{
	struct amdgpu_device *adev;
	int r, acpi_status;

	adev = kzalloc(sizeof(struct amdgpu_device), GFP_KERNEL);
	if (adev == NULL) {
	return -ENOMEM;
	}
	dev->dev_private = (void *)adev;

	if ((amdgpu_runtime_pm != 0) &&
	amdgpu_has_atpx() &&
	((flags & AMDGPU_IS_APU) == 0))
	flags \|= AMDGPU_IS_PX;

	/* amdgpu_device_init should report only fatal error
	* like memory allocation failure or iomapping failure,
	* or memory manager initialization failure, it must
	* properly initialize the GPU MC controller and permit
	* VRAM allocation
	*/
	r = amdgpu_device_init(adev, dev, dev->pdev, flags);
	if (r) {
	dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
	goto out;
	}

	/* Call ACPI methods: require modeset init
	* but failure is not fatal
	*/
	if (!r) {
	acpi_status = amdgpu_acpi_init(adev);
	if (acpi_status)
	dev_dbg(&dev->pdev->dev,
	"Error during ACPI methods call\n");
	}

	if (amdgpu_device_is_px(dev)) {
	pm_runtime_use_autosuspend(dev->dev);
	pm_runtime_set_autosuspend_delay(dev->dev, 5000);
	pm_runtime_set_active(dev->dev);
	pm_runtime_allow(dev->dev);
	pm_runtime_mark_last_busy(dev->dev);
	pm_runtime_put_autosuspend(dev->dev);
	}

	out:
	if (r)
	amdgpu_driver_unload_kms(dev);


	return r;
	}

	/*
	* Userspace get information ioctl
	*/
	/**
	* amdgpu_info_ioctl - answer a device specific request.
	*
	* @adev: amdgpu device pointer
	* @data: request object
	* @filp: drm filp
	*
	* This function is used to pass device specific parameters to the userspace
	* drivers. Examples include: pci device id, pipeline parms, tiling params,
	* etc. (all asics).
	* Returns 0 on success, -EINVAL on failure.
	*/
	static int amdgpu_info_ioctl(struct drm_device dev, void data, struct drm_file *filp)
	{
	struct amdgpu_device *adev = dev->dev_private;
	struct drm_amdgpu_info *info = data;
	struct amdgpu_mode_info *minfo = &adev->mode_info;
	void __user out = (void __user )(long)info->return_pointer;
	uint32_t size = info->return_size;
	struct drm_crtc *crtc;
	uint32_t ui32 = 0;
	uint64_t ui64 = 0;
	int i, found;

	if (!info->return_size \|\| !info->return_pointer)
	return -EINVAL;

	switch (info->query) {
	case AMDGPU_INFO_ACCEL_WORKING:
	ui32 = adev->accel_working;
	return copy_to_user(out, &ui32, min(size, 4u)) ? -EFAULT : 0;
	case AMDGPU_INFO_CRTC_FROM_ID:
	for (i = 0, found = 0; i < adev->mode_info.num_crtc; i++) {
	crtc = (struct drm_crtc *)minfo->crtcs[i];
	if (crtc && crtc->base.id == info->mode_crtc.id) {
	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
	ui32 = amdgpu_crtc->crtc_id;
	found = 1;
	break;
	}
	}
	if (!found) {
	DRM_DEBUG_KMS("unknown crtc id %d\n", info->mode_crtc.id);
	return -EINVAL;
	}
	return copy_to_user(out, &ui32, min(size, 4u)) ? -EFAULT : 0;
	case AMDGPU_INFO_HW_IP_INFO: {
	struct drm_amdgpu_info_hw_ip ip = {};
	enum amd_ip_block_type type;
	uint32_t ring_mask = 0;
	uint32_t ib_start_alignment = 0;
	uint32_t ib_size_alignment = 0;

	if (info->query_hw_ip.ip_instance >= AMDGPU_HW_IP_INSTANCE_MAX_COUNT)
	return -EINVAL;

	switch (info->query_hw_ip.type) {
	case AMDGPU_HW_IP_GFX:
	type = AMD_IP_BLOCK_TYPE_GFX;
	for (i = 0; i < adev->gfx.num_gfx_rings; i++)
	ring_mask \|= ((adev->gfx.gfx_ring[i].ready ? 1 : 0) << i);
	ib_start_alignment = AMDGPU_GPU_PAGE_SIZE;
	ib_size_alignment = 8;
	break;
	case AMDGPU_HW_IP_COMPUTE:
	type = AMD_IP_BLOCK_TYPE_GFX;
	for (i = 0; i < adev->gfx.num_compute_rings; i++)
	ring_mask \|= ((adev->gfx.compute_ring[i].ready ? 1 : 0) << i);
	ib_start_alignment = AMDGPU_GPU_PAGE_SIZE;
	ib_size_alignment = 8;
	break;
	case AMDGPU_HW_IP_DMA:
	type = AMD_IP_BLOCK_TYPE_SDMA;
	ring_mask = adev->sdma[0].ring.ready ? 1 : 0;
	ring_mask \|= ((adev->sdma[1].ring.ready ? 1 : 0) << 1);
	ib_start_alignment = AMDGPU_GPU_PAGE_SIZE;
	ib_size_alignment = 1;
	break;
	case AMDGPU_HW_IP_UVD:
	type = AMD_IP_BLOCK_TYPE_UVD;
	ring_mask = adev->uvd.ring.ready ? 1 : 0;
	ib_start_alignment = AMDGPU_GPU_PAGE_SIZE;
	ib_size_alignment = 8;
	break;
	case AMDGPU_HW_IP_VCE:
	type = AMD_IP_BLOCK_TYPE_VCE;
	for (i = 0; i < AMDGPU_MAX_VCE_RINGS; i++)
	ring_mask \|= ((adev->vce.ring[i].ready ? 1 : 0) << i);
	ib_start_alignment = AMDGPU_GPU_PAGE_SIZE;
	ib_size_alignment = 8;
	break;
	default:
	return -EINVAL;
	}

	for (i = 0; i < adev->num_ip_blocks; i++) {
	if (adev->ip_blocks[i].type == type &&
	adev->ip_block_status[i].valid) {
	ip.hw_ip_version_major = adev->ip_blocks[i].major;
	ip.hw_ip_version_minor = adev->ip_blocks[i].minor;
	ip.capabilities_flags = 0;
	ip.available_rings = ring_mask;
	ip.ib_start_alignment = ib_start_alignment;
	ip.ib_size_alignment = ib_size_alignment;
	break;
	}
	}
	return copy_to_user(out, &ip,
	min((size_t)size, sizeof(ip))) ? -EFAULT : 0;
	}
	case AMDGPU_INFO_HW_IP_COUNT: {
	enum amd_ip_block_type type;
	uint32_t count = 0;

	switch (info->query_hw_ip.type) {
	case AMDGPU_HW_IP_GFX:
	type = AMD_IP_BLOCK_TYPE_GFX;
	break;
	case AMDGPU_HW_IP_COMPUTE:
	type = AMD_IP_BLOCK_TYPE_GFX;
	break;
	case AMDGPU_HW_IP_DMA:
	type = AMD_IP_BLOCK_TYPE_SDMA;
	break;
	case AMDGPU_HW_IP_UVD:
	type = AMD_IP_BLOCK_TYPE_UVD;
	break;
	case AMDGPU_HW_IP_VCE:
	type = AMD_IP_BLOCK_TYPE_VCE;
	break;
	default:
	return -EINVAL;
	}

	for (i = 0; i < adev->num_ip_blocks; i++)
	if (adev->ip_blocks[i].type == type &&
	adev->ip_block_status[i].valid &&
	count < AMDGPU_HW_IP_INSTANCE_MAX_COUNT)
	count++;

	return copy_to_user(out, &count, min(size, 4u)) ? -EFAULT : 0;
	}
	case AMDGPU_INFO_TIMESTAMP:
	ui64 = amdgpu_asic_get_gpu_clock_counter(adev);
	return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
	case AMDGPU_INFO_FW_VERSION: {
	struct drm_amdgpu_info_firmware fw_info;

	/* We only support one instance of each IP block right now. */
	if (info->query_fw.ip_instance != 0)
	return -EINVAL;

	switch (info->query_fw.fw_type) {
	case AMDGPU_INFO_FW_VCE:
	fw_info.ver = adev->vce.fw_version;
	fw_info.feature = adev->vce.fb_version;
	break;
	case AMDGPU_INFO_FW_UVD:
	fw_info.ver = 0;
	fw_info.feature = 0;
	break;
	case AMDGPU_INFO_FW_GMC:
	fw_info.ver = adev->mc.fw_version;
	fw_info.feature = 0;
	break;
	case AMDGPU_INFO_FW_GFX_ME:
	fw_info.ver = adev->gfx.me_fw_version;
	fw_info.feature = adev->gfx.me_feature_version;
	break;
	case AMDGPU_INFO_FW_GFX_PFP:
	fw_info.ver = adev->gfx.pfp_fw_version;
	fw_info.feature = adev->gfx.pfp_feature_version;
	break;
	case AMDGPU_INFO_FW_GFX_CE:
	fw_info.ver = adev->gfx.ce_fw_version;
	fw_info.feature = adev->gfx.ce_feature_version;
	break;
	case AMDGPU_INFO_FW_GFX_RLC:
	fw_info.ver = adev->gfx.rlc_fw_version;
	fw_info.feature = adev->gfx.rlc_feature_version;
	break;
	case AMDGPU_INFO_FW_GFX_MEC:
	if (info->query_fw.index == 0) {
	fw_info.ver = adev->gfx.mec_fw_version;
	fw_info.feature = adev->gfx.mec_feature_version;
	} else if (info->query_fw.index == 1) {
	fw_info.ver = adev->gfx.mec2_fw_version;
	fw_info.feature = adev->gfx.mec2_feature_version;
	} else
	return -EINVAL;
	break;
	case AMDGPU_INFO_FW_SMC:
	fw_info.ver = adev->pm.fw_version;
	fw_info.feature = 0;
	break;
	case AMDGPU_INFO_FW_SDMA:
	if (info->query_fw.index >= 2)
	return -EINVAL;
	fw_info.ver = adev->sdma[info->query_fw.index].fw_version;
	fw_info.feature = adev->sdma[info->query_fw.index].feature_version;
	break;
	default:
	return -EINVAL;
	}
	return copy_to_user(out, &fw_info,
	min((size_t)size, sizeof(fw_info))) ? -EFAULT : 0;
	}
	case AMDGPU_INFO_NUM_BYTES_MOVED:
	ui64 = atomic64_read(&adev->num_bytes_moved);
	return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
	case AMDGPU_INFO_VRAM_USAGE:
	ui64 = atomic64_read(&adev->vram_usage);
	return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
	case AMDGPU_INFO_VIS_VRAM_USAGE:
	ui64 = atomic64_read(&adev->vram_vis_usage);
	return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
	case AMDGPU_INFO_GTT_USAGE:
	ui64 = atomic64_read(&adev->gtt_usage);
	return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
	case AMDGPU_INFO_GDS_CONFIG: {
	struct drm_amdgpu_info_gds gds_info;

	memset(&gds_info, 0, sizeof(gds_info));
	gds_info.gds_gfx_partition_size = adev->gds.mem.gfx_partition_size >> AMDGPU_GDS_SHIFT;
	gds_info.compute_partition_size = adev->gds.mem.cs_partition_size >> AMDGPU_GDS_SHIFT;
	gds_info.gds_total_size = adev->gds.mem.total_size >> AMDGPU_GDS_SHIFT;
	gds_info.gws_per_gfx_partition = adev->gds.gws.gfx_partition_size >> AMDGPU_GWS_SHIFT;
	gds_info.gws_per_compute_partition = adev->gds.gws.cs_partition_size >> AMDGPU_GWS_SHIFT;
	gds_info.oa_per_gfx_partition = adev->gds.oa.gfx_partition_size >> AMDGPU_OA_SHIFT;
	gds_info.oa_per_compute_partition = adev->gds.oa.cs_partition_size >> AMDGPU_OA_SHIFT;
	return copy_to_user(out, &gds_info,
	min((size_t)size, sizeof(gds_info))) ? -EFAULT : 0;
	}
	case AMDGPU_INFO_VRAM_GTT: {
	struct drm_amdgpu_info_vram_gtt vram_gtt;

	vram_gtt.vram_size = adev->mc.real_vram_size;
	vram_gtt.vram_cpu_accessible_size = adev->mc.visible_vram_size;
	vram_gtt.vram_cpu_accessible_size -= adev->vram_pin_size;
	vram_gtt.gtt_size = adev->mc.gtt_size;
	vram_gtt.gtt_size -= adev->gart_pin_size;
	return copy_to_user(out, &vram_gtt,
	min((size_t)size, sizeof(vram_gtt))) ? -EFAULT : 0;
	}
	case AMDGPU_INFO_READ_MMR_REG: {
	unsigned n, alloc_size = info->read_mmr_reg.count * 4;
	uint32_t *regs;
	unsigned se_num = (info->read_mmr_reg.instance >>
	AMDGPU_INFO_MMR_SE_INDEX_SHIFT) &
	AMDGPU_INFO_MMR_SE_INDEX_MASK;
	unsigned sh_num = (info->read_mmr_reg.instance >>
	AMDGPU_INFO_MMR_SH_INDEX_SHIFT) &
	AMDGPU_INFO_MMR_SH_INDEX_MASK;

	/* set full masks if the userspace set all bits
	* in the bitfields */
	if (se_num == AMDGPU_INFO_MMR_SE_INDEX_MASK)
	se_num = 0xffffffff;
	if (sh_num == AMDGPU_INFO_MMR_SH_INDEX_MASK)
	sh_num = 0xffffffff;

	regs = kmalloc(alloc_size, GFP_KERNEL);
	if (!regs)
	return -ENOMEM;

	for (i = 0; i < info->read_mmr_reg.count; i++)
	if (amdgpu_asic_read_register(adev, se_num, sh_num,
	info->read_mmr_reg.dword_offset + i,
	&regs[i])) {
	DRM_DEBUG_KMS("unallowed offset %#x\n",
	info->read_mmr_reg.dword_offset + i);
	kfree(regs);
	return -EFAULT;
	}
	n = copy_to_user(out, regs, min(size, alloc_size));
	kfree(regs);
	return n ? -EFAULT : 0;
	}
	case AMDGPU_INFO_DEV_INFO: {
	struct drm_amdgpu_info_device dev_info = {};
	struct amdgpu_cu_info cu_info;

	dev_info.device_id = dev->pdev->device;
	dev_info.chip_rev = adev->rev_id;
	dev_info.external_rev = adev->external_rev_id;
	dev_info.pci_rev = dev->pdev->revision;
	dev_info.family = adev->family;
	dev_info.num_shader_engines = adev->gfx.config.max_shader_engines;
	dev_info.num_shader_arrays_per_engine = adev->gfx.config.max_sh_per_se;
	/* return all clocks in KHz */
	dev_info.gpu_counter_freq = amdgpu_asic_get_xclk(adev) * 10;
	if (adev->pm.dpm_enabled) {
	dev_info.max_engine_clock =
	adev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk * 10;
	dev_info.max_memory_clock =
	adev->pm.dpm.dyn_state.max_clock_voltage_on_ac.mclk * 10;
	} else {
	dev_info.max_engine_clock = adev->pm.default_sclk * 10;
	dev_info.max_memory_clock = adev->pm.default_mclk * 10;
	}
	dev_info.enabled_rb_pipes_mask = adev->gfx.config.backend_enable_mask;
	dev_info.num_rb_pipes = adev->gfx.config.max_backends_per_se *
	adev->gfx.config.max_shader_engines;
	dev_info.num_hw_gfx_contexts = adev->gfx.config.max_hw_contexts;
	dev_info._pad = 0;
	dev_info.ids_flags = 0;
	if (adev->flags & AMDGPU_IS_APU)
	dev_info.ids_flags \|= AMDGPU_IDS_FLAGS_FUSION;
	dev_info.virtual_address_offset = AMDGPU_VA_RESERVED_SIZE;
	dev_info.virtual_address_max = (uint64_t)adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
	dev_info.virtual_address_alignment = max(PAGE_SIZE, 0x10000UL);
	dev_info.pte_fragment_size = (1 << AMDGPU_LOG2_PAGES_PER_FRAG) *
	AMDGPU_GPU_PAGE_SIZE;
	dev_info.gart_page_size = AMDGPU_GPU_PAGE_SIZE;

	amdgpu_asic_get_cu_info(adev, &cu_info);
	dev_info.cu_active_number = cu_info.number;
	dev_info.cu_ao_mask = cu_info.ao_cu_mask;
	dev_info.ce_ram_size = adev->gfx.ce_ram_size;
	memcpy(&dev_info.cu_bitmap[0], &cu_info.bitmap[0], sizeof(cu_info.bitmap));
	dev_info.vram_type = adev->mc.vram_type;
	dev_info.vram_bit_width = adev->mc.vram_width;
	dev_info.vce_harvest_config = adev->vce.harvest_config;

	return copy_to_user(out, &dev_info,
	min((size_t)size, sizeof(dev_info))) ? -EFAULT : 0;
	}
	default:
	DRM_DEBUG_KMS("Invalid request %d\n", info->query);
	return -EINVAL;
	}
	return 0;
	}


	/*
	* Outdated mess for old drm with Xorg being in charge (void function now).
	*/
	/**
	* amdgpu_driver_firstopen_kms - drm callback for last close
	*
	* @dev: drm dev pointer
	*
	* Switch vga switcheroo state after last close (all asics).
	*/
	void amdgpu_driver_lastclose_kms(struct drm_device *dev)
	{
	vga_switcheroo_process_delayed_switch();
	}

	/**
	* amdgpu_driver_open_kms - drm callback for open
	*
	* @dev: drm dev pointer
	* @file_priv: drm file
	*
	* On device open, init vm on cayman+ (all asics).
	* Returns 0 on success, error on failure.
	*/
	int amdgpu_driver_open_kms(struct drm_device dev, struct drm_file file_priv)
	{
	struct amdgpu_device *adev = dev->dev_private;
	struct amdgpu_fpriv *fpriv;
	int r;

	file_priv->driver_priv = NULL;

	r = pm_runtime_get_sync(dev->dev);
	if (r < 0)
	return r;

	fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
	if (unlikely(!fpriv))
	return -ENOMEM;

	r = amdgpu_vm_init(adev, &fpriv->vm);
	if (r)
	goto error_free;

	mutex_init(&fpriv->bo_list_lock);
	idr_init(&fpriv->bo_list_handles);

	/* init context manager */
	mutex_init(&fpriv->ctx_mgr.lock);
	idr_init(&fpriv->ctx_mgr.ctx_handles);
	fpriv->ctx_mgr.adev = adev;

	file_priv->driver_priv = fpriv;

	pm_runtime_mark_last_busy(dev->dev);
	pm_runtime_put_autosuspend(dev->dev);
	return 0;

	error_free:
	kfree(fpriv);

	return r;
	}

	/**
	* amdgpu_driver_postclose_kms - drm callback for post close
	*
	* @dev: drm dev pointer
	* @file_priv: drm file
	*
	* On device post close, tear down vm on cayman+ (all asics).
	*/
	void amdgpu_driver_postclose_kms(struct drm_device *dev,
	struct drm_file *file_priv)
	{
	struct amdgpu_device *adev = dev->dev_private;
	struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
	struct amdgpu_bo_list *list;
	int handle;

	if (!fpriv)
	return;

	amdgpu_vm_fini(adev, &fpriv->vm);

	idr_for_each_entry(&fpriv->bo_list_handles, list, handle)
	amdgpu_bo_list_free(list);

	idr_destroy(&fpriv->bo_list_handles);
	mutex_destroy(&fpriv->bo_list_lock);

	/* release context */
	amdgpu_ctx_fini(fpriv);

	kfree(fpriv);
	file_priv->driver_priv = NULL;
	}

	/**
	* amdgpu_driver_preclose_kms - drm callback for pre close
	*
	* @dev: drm dev pointer
	* @file_priv: drm file
	*
	* On device pre close, tear down hyperz and cmask filps on r1xx-r5xx
	* (all asics).
	*/
	void amdgpu_driver_preclose_kms(struct drm_device *dev,
	struct drm_file *file_priv)
	{
	struct amdgpu_device *adev = dev->dev_private;

	amdgpu_uvd_free_handles(adev, file_priv);
	amdgpu_vce_free_handles(adev, file_priv);
	}

	/*
	* VBlank related functions.
	*/
	/**
	* amdgpu_get_vblank_counter_kms - get frame count
	*
	* @dev: drm dev pointer
	* @crtc: crtc to get the frame count from
	*
	* Gets the frame count on the requested crtc (all asics).
	* Returns frame count on success, -EINVAL on failure.
	*/
	u32 amdgpu_get_vblank_counter_kms(struct drm_device *dev, int crtc)
	{
	struct amdgpu_device *adev = dev->dev_private;

	if (crtc < 0 \|\| crtc >= adev->mode_info.num_crtc) {
	DRM_ERROR("Invalid crtc %d\n", crtc);
	return -EINVAL;
	}

	return amdgpu_display_vblank_get_counter(adev, crtc);
	}

	/**
	* amdgpu_enable_vblank_kms - enable vblank interrupt
	*
	* @dev: drm dev pointer
	* @crtc: crtc to enable vblank interrupt for
	*
	* Enable the interrupt on the requested crtc (all asics).
	* Returns 0 on success, -EINVAL on failure.
	*/
	int amdgpu_enable_vblank_kms(struct drm_device *dev, int crtc)
	{
	struct amdgpu_device *adev = dev->dev_private;
	int idx = amdgpu_crtc_idx_to_irq_type(adev, crtc);

	return amdgpu_irq_get(adev, &adev->crtc_irq, idx);
	}

	/**
	* amdgpu_disable_vblank_kms - disable vblank interrupt
	*
	* @dev: drm dev pointer
	* @crtc: crtc to disable vblank interrupt for
	*
	* Disable the interrupt on the requested crtc (all asics).
	*/
	void amdgpu_disable_vblank_kms(struct drm_device *dev, int crtc)
	{
	struct amdgpu_device *adev = dev->dev_private;
	int idx = amdgpu_crtc_idx_to_irq_type(adev, crtc);

	amdgpu_irq_put(adev, &adev->crtc_irq, idx);
	}

	/**
	* amdgpu_get_vblank_timestamp_kms - get vblank timestamp
	*
	* @dev: drm dev pointer
	* @crtc: crtc to get the timestamp for
	* @max_error: max error
	* @vblank_time: time value
	* @flags: flags passed to the driver
	*
	* Gets the timestamp on the requested crtc based on the
	* scanout position. (all asics).
	* Returns postive status flags on success, negative error on failure.
	*/
	int amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
	int *max_error,
	struct timeval *vblank_time,
	unsigned flags)
	{
	struct drm_crtc *drmcrtc;
	struct amdgpu_device *adev = dev->dev_private;

	if (crtc < 0 \|\| crtc >= dev->num_crtcs) {
	DRM_ERROR("Invalid crtc %d\n", crtc);
	return -EINVAL;
	}

	/* Get associated drm_crtc: */
	drmcrtc = &adev->mode_info.crtcs[crtc]->base;

	/* Helper routine in DRM core does all the work: */
	return drm_calc_vbltimestamp_from_scanoutpos(dev, crtc, max_error,
	vblank_time, flags,
	drmcrtc, &drmcrtc->hwmode);
	}

	const struct drm_ioctl_desc amdgpu_ioctls_kms[] = {
	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_CREATE, amdgpu_gem_create_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(AMDGPU_CTX, amdgpu_ctx_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(AMDGPU_BO_LIST, amdgpu_bo_list_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	/* KMS */
	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_MMAP, amdgpu_gem_mmap_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_WAIT_IDLE, amdgpu_gem_wait_idle_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(AMDGPU_CS, amdgpu_cs_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(AMDGPU_INFO, amdgpu_info_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(AMDGPU_WAIT_CS, amdgpu_cs_wait_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_METADATA, amdgpu_gem_metadata_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_VA, amdgpu_gem_va_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_OP, amdgpu_gem_op_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_USERPTR, amdgpu_gem_userptr_ioctl, DRM_AUTH\|DRM_UNLOCKED\|DRM_RENDER_ALLOW),
	};
	int amdgpu_max_kms_ioctl = ARRAY_SIZE(amdgpu_ioctls_kms);