Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1401 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
new file mode 100644
index 000000000..ec8a576ac
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -0,0 +1,1401 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/*
+ * Copyright 2014-2022 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.
+ */
+
+#ifndef KFD_PRIV_H_INCLUDED
+#define KFD_PRIV_H_INCLUDED
+
+#include <linux/hashtable.h>
+#include <linux/mmu_notifier.h>
+#include <linux/memremap.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+#include <linux/atomic.h>
+#include <linux/workqueue.h>
+#include <linux/spinlock.h>
+#include <linux/kfd_ioctl.h>
+#include <linux/idr.h>
+#include <linux/kfifo.h>
+#include <linux/seq_file.h>
+#include <linux/kref.h>
+#include <linux/sysfs.h>
+#include <linux/device_cgroup.h>
+#include <drm/drm_file.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_device.h>
+#include <drm/drm_ioctl.h>
+#include <kgd_kfd_interface.h>
+#include <linux/swap.h>
+
+#include "amd_shared.h"
+#include "amdgpu.h"
+
+#define KFD_MAX_RING_ENTRY_SIZE	8
+
+#define KFD_SYSFS_FILE_MODE 0444
+
+/* GPU ID hash width in bits */
+#define KFD_GPU_ID_HASH_WIDTH 16
+
+/* Use upper bits of mmap offset to store KFD driver specific information.
+ * BITS[63:62] - Encode MMAP type
+ * BITS[61:46] - Encode gpu_id. To identify to which GPU the offset belongs to
+ * BITS[45:0]  - MMAP offset value
+ *
+ * NOTE: struct vm_area_struct.vm_pgoff uses offset in pages. Hence, these
+ *  defines are w.r.t to PAGE_SIZE
+ */
+#define KFD_MMAP_TYPE_SHIFT	62
+#define KFD_MMAP_TYPE_MASK	(0x3ULL << KFD_MMAP_TYPE_SHIFT)
+#define KFD_MMAP_TYPE_DOORBELL	(0x3ULL << KFD_MMAP_TYPE_SHIFT)
+#define KFD_MMAP_TYPE_EVENTS	(0x2ULL << KFD_MMAP_TYPE_SHIFT)
+#define KFD_MMAP_TYPE_RESERVED_MEM	(0x1ULL << KFD_MMAP_TYPE_SHIFT)
+#define KFD_MMAP_TYPE_MMIO	(0x0ULL << KFD_MMAP_TYPE_SHIFT)
+
+#define KFD_MMAP_GPU_ID_SHIFT 46
+#define KFD_MMAP_GPU_ID_MASK (((1ULL << KFD_GPU_ID_HASH_WIDTH) - 1) \
+				<< KFD_MMAP_GPU_ID_SHIFT)
+#define KFD_MMAP_GPU_ID(gpu_id) ((((uint64_t)gpu_id) << KFD_MMAP_GPU_ID_SHIFT)\
+				& KFD_MMAP_GPU_ID_MASK)
+#define KFD_MMAP_GET_GPU_ID(offset)    ((offset & KFD_MMAP_GPU_ID_MASK) \
+				>> KFD_MMAP_GPU_ID_SHIFT)
+
+/*
+ * When working with cp scheduler we should assign the HIQ manually or via
+ * the amdgpu driver to a fixed hqd slot, here are the fixed HIQ hqd slot
+ * definitions for Kaveri. In Kaveri only the first ME queues participates
+ * in the cp scheduling taking that in mind we set the HIQ slot in the
+ * second ME.
+ */
+#define KFD_CIK_HIQ_PIPE 4
+#define KFD_CIK_HIQ_QUEUE 0
+
+/* Macro for allocating structures */
+#define kfd_alloc_struct(ptr_to_struct)	\
+	((typeof(ptr_to_struct)) kzalloc(sizeof(*ptr_to_struct), GFP_KERNEL))
+
+#define KFD_MAX_NUM_OF_PROCESSES 512
+#define KFD_MAX_NUM_OF_QUEUES_PER_PROCESS 1024
+
+/*
+ * Size of the per-process TBA+TMA buffer: 2 pages
+ *
+ * The first page is the TBA used for the CWSR ISA code. The second
+ * page is used as TMA for user-mode trap handler setup in daisy-chain mode.
+ */
+#define KFD_CWSR_TBA_TMA_SIZE (PAGE_SIZE * 2)
+#define KFD_CWSR_TMA_OFFSET PAGE_SIZE
+
+#define KFD_MAX_NUM_OF_QUEUES_PER_DEVICE		\
+	(KFD_MAX_NUM_OF_PROCESSES *			\
+			KFD_MAX_NUM_OF_QUEUES_PER_PROCESS)
+
+#define KFD_KERNEL_QUEUE_SIZE 2048
+
+#define KFD_UNMAP_LATENCY_MS	(4000)
+
+/*
+ * 512 = 0x200
+ * The doorbell index distance between SDMA RLC (2*i) and (2*i+1) in the
+ * same SDMA engine on SOC15, which has 8-byte doorbells for SDMA.
+ * 512 8-byte doorbell distance (i.e. one page away) ensures that SDMA RLC
+ * (2*i+1) doorbells (in terms of the lower 12 bit address) lie exactly in
+ * the OFFSET and SIZE set in registers like BIF_SDMA0_DOORBELL_RANGE.
+ */
+#define KFD_QUEUE_DOORBELL_MIRROR_OFFSET 512
+
+/**
+ * enum kfd_ioctl_flags - KFD ioctl flags
+ * Various flags that can be set in &amdkfd_ioctl_desc.flags to control how
+ * userspace can use a given ioctl.
+ */
+enum kfd_ioctl_flags {
+	/*
+	 * @KFD_IOC_FLAG_CHECKPOINT_RESTORE:
+	 * Certain KFD ioctls such as AMDKFD_IOC_CRIU_OP can potentially
+	 * perform privileged operations and load arbitrary data into MQDs and
+	 * eventually HQD registers when the queue is mapped by HWS. In order to
+	 * prevent this we should perform additional security checks.
+	 *
+	 * This is equivalent to callers with the CHECKPOINT_RESTORE capability.
+	 *
+	 * Note: Since earlier versions of docker do not support CHECKPOINT_RESTORE,
+	 * we also allow ioctls with SYS_ADMIN capability.
+	 */
+	KFD_IOC_FLAG_CHECKPOINT_RESTORE = BIT(0),
+};
+/*
+ * Kernel module parameter to specify maximum number of supported queues per
+ * device
+ */
+extern int max_num_of_queues_per_device;
+
+
+/* Kernel module parameter to specify the scheduling policy */
+extern int sched_policy;
+
+/*
+ * Kernel module parameter to specify the maximum process
+ * number per HW scheduler
+ */
+extern int hws_max_conc_proc;
+
+extern int cwsr_enable;
+
+/*
+ * Kernel module parameter to specify whether to send sigterm to HSA process on
+ * unhandled exception
+ */
+extern int send_sigterm;
+
+/*
+ * This kernel module is used to simulate large bar machine on non-large bar
+ * enabled machines.
+ */
+extern int debug_largebar;
+
+/*
+ * Ignore CRAT table during KFD initialization, can be used to work around
+ * broken CRAT tables on some AMD systems
+ */
+extern int ignore_crat;
+
+/* Set sh_mem_config.retry_disable on GFX v9 */
+extern int amdgpu_noretry;
+
+/* Halt if HWS hang is detected */
+extern int halt_if_hws_hang;
+
+/* Whether MEC FW support GWS barriers */
+extern bool hws_gws_support;
+
+/* Queue preemption timeout in ms */
+extern int queue_preemption_timeout_ms;
+
+/*
+ * Don't evict process queues on vm fault
+ */
+extern int amdgpu_no_queue_eviction_on_vm_fault;
+
+/* Enable eviction debug messages */
+extern bool debug_evictions;
+
+enum cache_policy {
+	cache_policy_coherent,
+	cache_policy_noncoherent
+};
+
+#define KFD_GC_VERSION(dev) ((dev)->adev->ip_versions[GC_HWIP][0])
+#define KFD_IS_SOC15(dev)   ((KFD_GC_VERSION(dev)) >= (IP_VERSION(9, 0, 1)))
+
+struct kfd_event_interrupt_class {
+	bool (*interrupt_isr)(struct kfd_dev *dev,
+			const uint32_t *ih_ring_entry, uint32_t *patched_ihre,
+			bool *patched_flag);
+	void (*interrupt_wq)(struct kfd_dev *dev,
+			const uint32_t *ih_ring_entry);
+};
+
+struct kfd_device_info {
+	uint32_t gfx_target_version;
+	const struct kfd_event_interrupt_class *event_interrupt_class;
+	unsigned int max_pasid_bits;
+	unsigned int max_no_of_hqd;
+	unsigned int doorbell_size;
+	size_t ih_ring_entry_size;
+	uint8_t num_of_watch_points;
+	uint16_t mqd_size_aligned;
+	bool supports_cwsr;
+	bool needs_iommu_device;
+	bool needs_pci_atomics;
+	uint32_t no_atomic_fw_version;
+	unsigned int num_sdma_queues_per_engine;
+	unsigned int num_reserved_sdma_queues_per_engine;
+	uint64_t reserved_sdma_queues_bitmap;
+};
+
+unsigned int kfd_get_num_sdma_engines(struct kfd_dev *kdev);
+unsigned int kfd_get_num_xgmi_sdma_engines(struct kfd_dev *kdev);
+
+struct kfd_mem_obj {
+	uint32_t range_start;
+	uint32_t range_end;
+	uint64_t gpu_addr;
+	uint32_t *cpu_ptr;
+	void *gtt_mem;
+};
+
+struct kfd_vmid_info {
+	uint32_t first_vmid_kfd;
+	uint32_t last_vmid_kfd;
+	uint32_t vmid_num_kfd;
+};
+
+struct kfd_dev {
+	struct amdgpu_device *adev;
+
+	struct kfd_device_info device_info;
+	struct pci_dev *pdev;
+	struct drm_device *ddev;
+
+	unsigned int id;		/* topology stub index */
+
+	phys_addr_t doorbell_base;	/* Start of actual doorbells used by
+					 * KFD. It is aligned for mapping
+					 * into user mode
+					 */
+	size_t doorbell_base_dw_offset;	/* Offset from the start of the PCI
+					 * doorbell BAR to the first KFD
+					 * doorbell in dwords. GFX reserves
+					 * the segment before this offset.
+					 */
+	u32 __iomem *doorbell_kernel_ptr; /* This is a pointer for a doorbells
+					   * page used by kernel queue
+					   */
+
+	struct kgd2kfd_shared_resources shared_resources;
+	struct kfd_vmid_info vm_info;
+	struct kfd_local_mem_info local_mem_info;
+
+	const struct kfd2kgd_calls *kfd2kgd;
+	struct mutex doorbell_mutex;
+	DECLARE_BITMAP(doorbell_available_index,
+			KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
+
+	void *gtt_mem;
+	uint64_t gtt_start_gpu_addr;
+	void *gtt_start_cpu_ptr;
+	void *gtt_sa_bitmap;
+	struct mutex gtt_sa_lock;
+	unsigned int gtt_sa_chunk_size;
+	unsigned int gtt_sa_num_of_chunks;
+
+	/* Interrupts */
+	struct kfifo ih_fifo;
+	struct workqueue_struct *ih_wq;
+	struct work_struct interrupt_work;
+	spinlock_t interrupt_lock;
+
+	/* QCM Device instance */
+	struct device_queue_manager *dqm;
+
+	bool init_complete;
+	/*
+	 * Interrupts of interest to KFD are copied
+	 * from the HW ring into a SW ring.
+	 */
+	bool interrupts_active;
+
+	/* Firmware versions */
+	uint16_t mec_fw_version;
+	uint16_t mec2_fw_version;
+	uint16_t sdma_fw_version;
+
+	/* Maximum process number mapped to HW scheduler */
+	unsigned int max_proc_per_quantum;
+
+	/* CWSR */
+	bool cwsr_enabled;
+	const void *cwsr_isa;
+	unsigned int cwsr_isa_size;
+
+	/* xGMI */
+	uint64_t hive_id;
+
+	bool pci_atomic_requested;
+
+	/* Use IOMMU v2 flag */
+	bool use_iommu_v2;
+
+	/* SRAM ECC flag */
+	atomic_t sram_ecc_flag;
+
+	/* Compute Profile ref. count */
+	atomic_t compute_profile;
+
+	/* Global GWS resource shared between processes */
+	void *gws;
+
+	/* Clients watching SMI events */
+	struct list_head smi_clients;
+	spinlock_t smi_lock;
+
+	uint32_t reset_seq_num;
+
+	struct ida doorbell_ida;
+	unsigned int max_doorbell_slices;
+
+	int noretry;
+
+	/* HMM page migration MEMORY_DEVICE_PRIVATE mapping */
+	struct dev_pagemap pgmap;
+};
+
+enum kfd_mempool {
+	KFD_MEMPOOL_SYSTEM_CACHEABLE = 1,
+	KFD_MEMPOOL_SYSTEM_WRITECOMBINE = 2,
+	KFD_MEMPOOL_FRAMEBUFFER = 3,
+};
+
+/* Character device interface */
+int kfd_chardev_init(void);
+void kfd_chardev_exit(void);
+
+/**
+ * enum kfd_unmap_queues_filter - Enum for queue filters.
+ *
+ * @KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES: Preempts all queues in the
+ *						running queues list.
+ *
+ * @KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES: Preempts all non-static queues
+ *						in the run list.
+ *
+ * @KFD_UNMAP_QUEUES_FILTER_BY_PASID: Preempts queues that belongs to
+ *						specific process.
+ *
+ */
+enum kfd_unmap_queues_filter {
+	KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES = 1,
+	KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES = 2,
+	KFD_UNMAP_QUEUES_FILTER_BY_PASID = 3
+};
+
+/**
+ * enum kfd_queue_type - Enum for various queue types.
+ *
+ * @KFD_QUEUE_TYPE_COMPUTE: Regular user mode queue type.
+ *
+ * @KFD_QUEUE_TYPE_SDMA: SDMA user mode queue type.
+ *
+ * @KFD_QUEUE_TYPE_HIQ: HIQ queue type.
+ *
+ * @KFD_QUEUE_TYPE_DIQ: DIQ queue type.
+ *
+ * @KFD_QUEUE_TYPE_SDMA_XGMI: Special SDMA queue for XGMI interface.
+ */
+enum kfd_queue_type  {
+	KFD_QUEUE_TYPE_COMPUTE,
+	KFD_QUEUE_TYPE_SDMA,
+	KFD_QUEUE_TYPE_HIQ,
+	KFD_QUEUE_TYPE_DIQ,
+	KFD_QUEUE_TYPE_SDMA_XGMI
+};
+
+enum kfd_queue_format {
+	KFD_QUEUE_FORMAT_PM4,
+	KFD_QUEUE_FORMAT_AQL
+};
+
+enum KFD_QUEUE_PRIORITY {
+	KFD_QUEUE_PRIORITY_MINIMUM = 0,
+	KFD_QUEUE_PRIORITY_MAXIMUM = 15
+};
+
+/**
+ * struct queue_properties
+ *
+ * @type: The queue type.
+ *
+ * @queue_id: Queue identifier.
+ *
+ * @queue_address: Queue ring buffer address.
+ *
+ * @queue_size: Queue ring buffer size.
+ *
+ * @priority: Defines the queue priority relative to other queues in the
+ * process.
+ * This is just an indication and HW scheduling may override the priority as
+ * necessary while keeping the relative prioritization.
+ * the priority granularity is from 0 to f which f is the highest priority.
+ * currently all queues are initialized with the highest priority.
+ *
+ * @queue_percent: This field is partially implemented and currently a zero in
+ * this field defines that the queue is non active.
+ *
+ * @read_ptr: User space address which points to the number of dwords the
+ * cp read from the ring buffer. This field updates automatically by the H/W.
+ *
+ * @write_ptr: Defines the number of dwords written to the ring buffer.
+ *
+ * @doorbell_ptr: Notifies the H/W of new packet written to the queue ring
+ * buffer. This field should be similar to write_ptr and the user should
+ * update this field after updating the write_ptr.
+ *
+ * @doorbell_off: The doorbell offset in the doorbell pci-bar.
+ *
+ * @is_interop: Defines if this is a interop queue. Interop queue means that
+ * the queue can access both graphics and compute resources.
+ *
+ * @is_evicted: Defines if the queue is evicted. Only active queues
+ * are evicted, rendering them inactive.
+ *
+ * @is_active: Defines if the queue is active or not. @is_active and
+ * @is_evicted are protected by the DQM lock.
+ *
+ * @is_gws: Defines if the queue has been updated to be GWS-capable or not.
+ * @is_gws should be protected by the DQM lock, since changing it can yield the
+ * possibility of updating DQM state on number of GWS queues.
+ *
+ * @vmid: If the scheduling mode is no cp scheduling the field defines the vmid
+ * of the queue.
+ *
+ * This structure represents the queue properties for each queue no matter if
+ * it's user mode or kernel mode queue.
+ *
+ */
+
+struct queue_properties {
+	enum kfd_queue_type type;
+	enum kfd_queue_format format;
+	unsigned int queue_id;
+	uint64_t queue_address;
+	uint64_t  queue_size;
+	uint32_t priority;
+	uint32_t queue_percent;
+	uint32_t *read_ptr;
+	uint32_t *write_ptr;
+	void __iomem *doorbell_ptr;
+	uint32_t doorbell_off;
+	bool is_interop;
+	bool is_evicted;
+	bool is_active;
+	bool is_gws;
+	/* Not relevant for user mode queues in cp scheduling */
+	unsigned int vmid;
+	/* Relevant only for sdma queues*/
+	uint32_t sdma_engine_id;
+	uint32_t sdma_queue_id;
+	uint32_t sdma_vm_addr;
+	/* Relevant only for VI */
+	uint64_t eop_ring_buffer_address;
+	uint32_t eop_ring_buffer_size;
+	uint64_t ctx_save_restore_area_address;
+	uint32_t ctx_save_restore_area_size;
+	uint32_t ctl_stack_size;
+	uint64_t tba_addr;
+	uint64_t tma_addr;
+};
+
+#define QUEUE_IS_ACTIVE(q) ((q).queue_size > 0 &&	\
+			    (q).queue_address != 0 &&	\
+			    (q).queue_percent > 0 &&	\
+			    !(q).is_evicted)
+
+enum mqd_update_flag {
+	UPDATE_FLAG_CU_MASK = 0,
+};
+
+struct mqd_update_info {
+	union {
+		struct {
+			uint32_t count; /* Must be a multiple of 32 */
+			uint32_t *ptr;
+		} cu_mask;
+	};
+	enum mqd_update_flag update_flag;
+};
+
+/**
+ * struct queue
+ *
+ * @list: Queue linked list.
+ *
+ * @mqd: The queue MQD (memory queue descriptor).
+ *
+ * @mqd_mem_obj: The MQD local gpu memory object.
+ *
+ * @gart_mqd_addr: The MQD gart mc address.
+ *
+ * @properties: The queue properties.
+ *
+ * @mec: Used only in no cp scheduling mode and identifies to micro engine id
+ *	 that the queue should be executed on.
+ *
+ * @pipe: Used only in no cp scheduling mode and identifies the queue's pipe
+ *	  id.
+ *
+ * @queue: Used only in no cp scheduliong mode and identifies the queue's slot.
+ *
+ * @process: The kfd process that created this queue.
+ *
+ * @device: The kfd device that created this queue.
+ *
+ * @gws: Pointing to gws kgd_mem if this is a gws control queue; NULL
+ * otherwise.
+ *
+ * This structure represents user mode compute queues.
+ * It contains all the necessary data to handle such queues.
+ *
+ */
+
+struct queue {
+	struct list_head list;
+	void *mqd;
+	struct kfd_mem_obj *mqd_mem_obj;
+	uint64_t gart_mqd_addr;
+	struct queue_properties properties;
+
+	uint32_t mec;
+	uint32_t pipe;
+	uint32_t queue;
+
+	unsigned int sdma_id;
+	unsigned int doorbell_id;
+
+	struct kfd_process	*process;
+	struct kfd_dev		*device;
+	void *gws;
+
+	/* procfs */
+	struct kobject kobj;
+
+	void *gang_ctx_bo;
+	uint64_t gang_ctx_gpu_addr;
+	void *gang_ctx_cpu_ptr;
+
+	struct amdgpu_bo *wptr_bo;
+};
+
+enum KFD_MQD_TYPE {
+	KFD_MQD_TYPE_HIQ = 0,		/* for hiq */
+	KFD_MQD_TYPE_CP,		/* for cp queues and diq */
+	KFD_MQD_TYPE_SDMA,		/* for sdma queues */
+	KFD_MQD_TYPE_DIQ,		/* for diq */
+	KFD_MQD_TYPE_MAX
+};
+
+enum KFD_PIPE_PRIORITY {
+	KFD_PIPE_PRIORITY_CS_LOW = 0,
+	KFD_PIPE_PRIORITY_CS_MEDIUM,
+	KFD_PIPE_PRIORITY_CS_HIGH
+};
+
+struct scheduling_resources {
+	unsigned int vmid_mask;
+	enum kfd_queue_type type;
+	uint64_t queue_mask;
+	uint64_t gws_mask;
+	uint32_t oac_mask;
+	uint32_t gds_heap_base;
+	uint32_t gds_heap_size;
+};
+
+struct process_queue_manager {
+	/* data */
+	struct kfd_process	*process;
+	struct list_head	queues;
+	unsigned long		*queue_slot_bitmap;
+};
+
+struct qcm_process_device {
+	/* The Device Queue Manager that owns this data */
+	struct device_queue_manager *dqm;
+	struct process_queue_manager *pqm;
+	/* Queues list */
+	struct list_head queues_list;
+	struct list_head priv_queue_list;
+
+	unsigned int queue_count;
+	unsigned int vmid;
+	bool is_debug;
+	unsigned int evicted; /* eviction counter, 0=active */
+
+	/* This flag tells if we should reset all wavefronts on
+	 * process termination
+	 */
+	bool reset_wavefronts;
+
+	/* This flag tells us if this process has a GWS-capable
+	 * queue that will be mapped into the runlist. It's
+	 * possible to request a GWS BO, but not have the queue
+	 * currently mapped, and this changes how the MAP_PROCESS
+	 * PM4 packet is configured.
+	 */
+	bool mapped_gws_queue;
+
+	/* All the memory management data should be here too */
+	uint64_t gds_context_area;
+	/* Contains page table flags such as AMDGPU_PTE_VALID since gfx9 */
+	uint64_t page_table_base;
+	uint32_t sh_mem_config;
+	uint32_t sh_mem_bases;
+	uint32_t sh_mem_ape1_base;
+	uint32_t sh_mem_ape1_limit;
+	uint32_t gds_size;
+	uint32_t num_gws;
+	uint32_t num_oac;
+	uint32_t sh_hidden_private_base;
+
+	/* CWSR memory */
+	struct kgd_mem *cwsr_mem;
+	void *cwsr_kaddr;
+	uint64_t cwsr_base;
+	uint64_t tba_addr;
+	uint64_t tma_addr;
+
+	/* IB memory */
+	struct kgd_mem *ib_mem;
+	uint64_t ib_base;
+	void *ib_kaddr;
+
+	/* doorbell resources per process per device */
+	unsigned long *doorbell_bitmap;
+};
+
+/* KFD Memory Eviction */
+
+/* Approx. wait time before attempting to restore evicted BOs */
+#define PROCESS_RESTORE_TIME_MS 100
+/* Approx. back off time if restore fails due to lack of memory */
+#define PROCESS_BACK_OFF_TIME_MS 100
+/* Approx. time before evicting the process again */
+#define PROCESS_ACTIVE_TIME_MS 10
+
+/* 8 byte handle containing GPU ID in the most significant 4 bytes and
+ * idr_handle in the least significant 4 bytes
+ */
+#define MAKE_HANDLE(gpu_id, idr_handle) \
+	(((uint64_t)(gpu_id) << 32) + idr_handle)
+#define GET_GPU_ID(handle) (handle >> 32)
+#define GET_IDR_HANDLE(handle) (handle & 0xFFFFFFFF)
+
+enum kfd_pdd_bound {
+	PDD_UNBOUND = 0,
+	PDD_BOUND,
+	PDD_BOUND_SUSPENDED,
+};
+
+#define MAX_SYSFS_FILENAME_LEN 15
+
+/*
+ * SDMA counter runs at 100MHz frequency.
+ * We display SDMA activity in microsecond granularity in sysfs.
+ * As a result, the divisor is 100.
+ */
+#define SDMA_ACTIVITY_DIVISOR  100
+
+/* Data that is per-process-per device. */
+struct kfd_process_device {
+	/* The device that owns this data. */
+	struct kfd_dev *dev;
+
+	/* The process that owns this kfd_process_device. */
+	struct kfd_process *process;
+
+	/* per-process-per device QCM data structure */
+	struct qcm_process_device qpd;
+
+	/*Apertures*/
+	uint64_t lds_base;
+	uint64_t lds_limit;
+	uint64_t gpuvm_base;
+	uint64_t gpuvm_limit;
+	uint64_t scratch_base;
+	uint64_t scratch_limit;
+
+	/* VM context for GPUVM allocations */
+	struct file *drm_file;
+	void *drm_priv;
+	atomic64_t tlb_seq;
+
+	/* GPUVM allocations storage */
+	struct idr alloc_idr;
+
+	/* Flag used to tell the pdd has dequeued from the dqm.
+	 * This is used to prevent dev->dqm->ops.process_termination() from
+	 * being called twice when it is already called in IOMMU callback
+	 * function.
+	 */
+	bool already_dequeued;
+	bool runtime_inuse;
+
+	/* Is this process/pasid bound to this device? (amd_iommu_bind_pasid) */
+	enum kfd_pdd_bound bound;
+
+	/* VRAM usage */
+	uint64_t vram_usage;
+	struct attribute attr_vram;
+	char vram_filename[MAX_SYSFS_FILENAME_LEN];
+
+	/* SDMA activity tracking */
+	uint64_t sdma_past_activity_counter;
+	struct attribute attr_sdma;
+	char sdma_filename[MAX_SYSFS_FILENAME_LEN];
+
+	/* Eviction activity tracking */
+	uint64_t last_evict_timestamp;
+	atomic64_t evict_duration_counter;
+	struct attribute attr_evict;
+
+	struct kobject *kobj_stats;
+	unsigned int doorbell_index;
+
+	/*
+	 * @cu_occupancy: Reports occupancy of Compute Units (CU) of a process
+	 * that is associated with device encoded by "this" struct instance. The
+	 * value reflects CU usage by all of the waves launched by this process
+	 * on this device. A very important property of occupancy parameter is
+	 * that its value is a snapshot of current use.
+	 *
+	 * Following is to be noted regarding how this parameter is reported:
+	 *
+	 *  The number of waves that a CU can launch is limited by couple of
+	 *  parameters. These are encoded by struct amdgpu_cu_info instance
+	 *  that is part of every device definition. For GFX9 devices this
+	 *  translates to 40 waves (simd_per_cu * max_waves_per_simd) when waves
+	 *  do not use scratch memory and 32 waves (max_scratch_slots_per_cu)
+	 *  when they do use scratch memory. This could change for future
+	 *  devices and therefore this example should be considered as a guide.
+	 *
+	 *  All CU's of a device are available for the process. This may not be true
+	 *  under certain conditions - e.g. CU masking.
+	 *
+	 *  Finally number of CU's that are occupied by a process is affected by both
+	 *  number of CU's a device has along with number of other competing processes
+	 */
+	struct attribute attr_cu_occupancy;
+
+	/* sysfs counters for GPU retry fault and page migration tracking */
+	struct kobject *kobj_counters;
+	struct attribute attr_faults;
+	struct attribute attr_page_in;
+	struct attribute attr_page_out;
+	uint64_t faults;
+	uint64_t page_in;
+	uint64_t page_out;
+	/*
+	 * If this process has been checkpointed before, then the user
+	 * application will use the original gpu_id on the
+	 * checkpointed node to refer to this device.
+	 */
+	uint32_t user_gpu_id;
+
+	void *proc_ctx_bo;
+	uint64_t proc_ctx_gpu_addr;
+	void *proc_ctx_cpu_ptr;
+};
+
+#define qpd_to_pdd(x) container_of(x, struct kfd_process_device, qpd)
+
+struct svm_range_list {
+	struct mutex			lock;
+	struct rb_root_cached		objects;
+	struct list_head		list;
+	struct work_struct		deferred_list_work;
+	struct list_head		deferred_range_list;
+	struct list_head                criu_svm_metadata_list;
+	spinlock_t			deferred_list_lock;
+	atomic_t			evicted_ranges;
+	atomic_t			drain_pagefaults;
+	struct delayed_work		restore_work;
+	DECLARE_BITMAP(bitmap_supported, MAX_GPU_INSTANCE);
+	struct task_struct		*faulting_task;
+};
+
+/* Process data */
+struct kfd_process {
+	/*
+	 * kfd_process are stored in an mm_struct*->kfd_process*
+	 * hash table (kfd_processes in kfd_process.c)
+	 */
+	struct hlist_node kfd_processes;
+
+	/*
+	 * Opaque pointer to mm_struct. We don't hold a reference to
+	 * it so it should never be dereferenced from here. This is
+	 * only used for looking up processes by their mm.
+	 */
+	void *mm;
+
+	struct kref ref;
+	struct work_struct release_work;
+
+	struct mutex mutex;
+
+	/*
+	 * In any process, the thread that started main() is the lead
+	 * thread and outlives the rest.
+	 * It is here because amd_iommu_bind_pasid wants a task_struct.
+	 * It can also be used for safely getting a reference to the
+	 * mm_struct of the process.
+	 */
+	struct task_struct *lead_thread;
+
+	/* We want to receive a notification when the mm_struct is destroyed */
+	struct mmu_notifier mmu_notifier;
+
+	u32 pasid;
+
+	/*
+	 * Array of kfd_process_device pointers,
+	 * one for each device the process is using.
+	 */
+	struct kfd_process_device *pdds[MAX_GPU_INSTANCE];
+	uint32_t n_pdds;
+
+	struct process_queue_manager pqm;
+
+	/*Is the user space process 32 bit?*/
+	bool is_32bit_user_mode;
+
+	/* Event-related data */
+	struct mutex event_mutex;
+	/* Event ID allocator and lookup */
+	struct idr event_idr;
+	/* Event page */
+	u64 signal_handle;
+	struct kfd_signal_page *signal_page;
+	size_t signal_mapped_size;
+	size_t signal_event_count;
+	bool signal_event_limit_reached;
+
+	/* Information used for memory eviction */
+	void *kgd_process_info;
+	/* Eviction fence that is attached to all the BOs of this process. The
+	 * fence will be triggered during eviction and new one will be created
+	 * during restore
+	 */
+	struct dma_fence *ef;
+
+	/* Work items for evicting and restoring BOs */
+	struct delayed_work eviction_work;
+	struct delayed_work restore_work;
+	/* seqno of the last scheduled eviction */
+	unsigned int last_eviction_seqno;
+	/* Approx. the last timestamp (in jiffies) when the process was
+	 * restored after an eviction
+	 */
+	unsigned long last_restore_timestamp;
+
+	/* Kobj for our procfs */
+	struct kobject *kobj;
+	struct kobject *kobj_queues;
+	struct attribute attr_pasid;
+
+	/* shared virtual memory registered by this process */
+	struct svm_range_list svms;
+
+	bool xnack_enabled;
+
+	atomic_t poison;
+	/* Queues are in paused stated because we are in the process of doing a CRIU checkpoint */
+	bool queues_paused;
+};
+
+#define KFD_PROCESS_TABLE_SIZE 5 /* bits: 32 entries */
+extern DECLARE_HASHTABLE(kfd_processes_table, KFD_PROCESS_TABLE_SIZE);
+extern struct srcu_struct kfd_processes_srcu;
+
+/**
+ * typedef amdkfd_ioctl_t - typedef for ioctl function pointer.
+ *
+ * @filep: pointer to file structure.
+ * @p: amdkfd process pointer.
+ * @data: pointer to arg that was copied from user.
+ *
+ * Return: returns ioctl completion code.
+ */
+typedef int amdkfd_ioctl_t(struct file *filep, struct kfd_process *p,
+				void *data);
+
+struct amdkfd_ioctl_desc {
+	unsigned int cmd;
+	int flags;
+	amdkfd_ioctl_t *func;
+	unsigned int cmd_drv;
+	const char *name;
+};
+bool kfd_dev_is_large_bar(struct kfd_dev *dev);
+
+int kfd_process_create_wq(void);
+void kfd_process_destroy_wq(void);
+void kfd_cleanup_processes(void);
+struct kfd_process *kfd_create_process(struct file *filep);
+struct kfd_process *kfd_get_process(const struct task_struct *task);
+struct kfd_process *kfd_lookup_process_by_pasid(u32 pasid);
+struct kfd_process *kfd_lookup_process_by_mm(const struct mm_struct *mm);
+
+int kfd_process_gpuidx_from_gpuid(struct kfd_process *p, uint32_t gpu_id);
+int kfd_process_gpuid_from_adev(struct kfd_process *p,
+			       struct amdgpu_device *adev, uint32_t *gpuid,
+			       uint32_t *gpuidx);
+static inline int kfd_process_gpuid_from_gpuidx(struct kfd_process *p,
+				uint32_t gpuidx, uint32_t *gpuid) {
+	return gpuidx < p->n_pdds ? p->pdds[gpuidx]->dev->id : -EINVAL;
+}
+static inline struct kfd_process_device *kfd_process_device_from_gpuidx(
+				struct kfd_process *p, uint32_t gpuidx) {
+	return gpuidx < p->n_pdds ? p->pdds[gpuidx] : NULL;
+}
+
+void kfd_unref_process(struct kfd_process *p);
+int kfd_process_evict_queues(struct kfd_process *p, uint32_t trigger);
+int kfd_process_restore_queues(struct kfd_process *p);
+void kfd_suspend_all_processes(void);
+int kfd_resume_all_processes(void);
+
+struct kfd_process_device *kfd_process_device_data_by_id(struct kfd_process *process,
+							 uint32_t gpu_id);
+
+int kfd_process_get_user_gpu_id(struct kfd_process *p, uint32_t actual_gpu_id);
+
+int kfd_process_device_init_vm(struct kfd_process_device *pdd,
+			       struct file *drm_file);
+struct kfd_process_device *kfd_bind_process_to_device(struct kfd_dev *dev,
+						struct kfd_process *p);
+struct kfd_process_device *kfd_get_process_device_data(struct kfd_dev *dev,
+							struct kfd_process *p);
+struct kfd_process_device *kfd_create_process_device_data(struct kfd_dev *dev,
+							struct kfd_process *p);
+
+bool kfd_process_xnack_mode(struct kfd_process *p, bool supported);
+
+int kfd_reserved_mem_mmap(struct kfd_dev *dev, struct kfd_process *process,
+			  struct vm_area_struct *vma);
+
+/* KFD process API for creating and translating handles */
+int kfd_process_device_create_obj_handle(struct kfd_process_device *pdd,
+					void *mem);
+void *kfd_process_device_translate_handle(struct kfd_process_device *p,
+					int handle);
+void kfd_process_device_remove_obj_handle(struct kfd_process_device *pdd,
+					int handle);
+struct kfd_process *kfd_lookup_process_by_pid(struct pid *pid);
+
+/* PASIDs */
+int kfd_pasid_init(void);
+void kfd_pasid_exit(void);
+bool kfd_set_pasid_limit(unsigned int new_limit);
+unsigned int kfd_get_pasid_limit(void);
+u32 kfd_pasid_alloc(void);
+void kfd_pasid_free(u32 pasid);
+
+/* Doorbells */
+size_t kfd_doorbell_process_slice(struct kfd_dev *kfd);
+int kfd_doorbell_init(struct kfd_dev *kfd);
+void kfd_doorbell_fini(struct kfd_dev *kfd);
+int kfd_doorbell_mmap(struct kfd_dev *dev, struct kfd_process *process,
+		      struct vm_area_struct *vma);
+void __iomem *kfd_get_kernel_doorbell(struct kfd_dev *kfd,
+					unsigned int *doorbell_off);
+void kfd_release_kernel_doorbell(struct kfd_dev *kfd, u32 __iomem *db_addr);
+u32 read_kernel_doorbell(u32 __iomem *db);
+void write_kernel_doorbell(void __iomem *db, u32 value);
+void write_kernel_doorbell64(void __iomem *db, u64 value);
+unsigned int kfd_get_doorbell_dw_offset_in_bar(struct kfd_dev *kfd,
+					struct kfd_process_device *pdd,
+					unsigned int doorbell_id);
+phys_addr_t kfd_get_process_doorbells(struct kfd_process_device *pdd);
+int kfd_alloc_process_doorbells(struct kfd_dev *kfd,
+				unsigned int *doorbell_index);
+void kfd_free_process_doorbells(struct kfd_dev *kfd,
+				unsigned int doorbell_index);
+/* GTT Sub-Allocator */
+
+int kfd_gtt_sa_allocate(struct kfd_dev *kfd, unsigned int size,
+			struct kfd_mem_obj **mem_obj);
+
+int kfd_gtt_sa_free(struct kfd_dev *kfd, struct kfd_mem_obj *mem_obj);
+
+extern struct device *kfd_device;
+
+/* KFD's procfs */
+void kfd_procfs_init(void);
+void kfd_procfs_shutdown(void);
+int kfd_procfs_add_queue(struct queue *q);
+void kfd_procfs_del_queue(struct queue *q);
+
+/* Topology */
+int kfd_topology_init(void);
+void kfd_topology_shutdown(void);
+int kfd_topology_add_device(struct kfd_dev *gpu);
+int kfd_topology_remove_device(struct kfd_dev *gpu);
+struct kfd_topology_device *kfd_topology_device_by_proximity_domain(
+						uint32_t proximity_domain);
+struct kfd_topology_device *kfd_topology_device_by_proximity_domain_no_lock(
+						uint32_t proximity_domain);
+struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id);
+struct kfd_dev *kfd_device_by_id(uint32_t gpu_id);
+struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev);
+struct kfd_dev *kfd_device_by_adev(const struct amdgpu_device *adev);
+int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev);
+int kfd_numa_node_to_apic_id(int numa_node_id);
+void kfd_double_confirm_iommu_support(struct kfd_dev *gpu);
+
+/* Interrupts */
+int kfd_interrupt_init(struct kfd_dev *dev);
+void kfd_interrupt_exit(struct kfd_dev *dev);
+bool enqueue_ih_ring_entry(struct kfd_dev *kfd,	const void *ih_ring_entry);
+bool interrupt_is_wanted(struct kfd_dev *dev,
+				const uint32_t *ih_ring_entry,
+				uint32_t *patched_ihre, bool *flag);
+
+/* amdkfd Apertures */
+int kfd_init_apertures(struct kfd_process *process);
+
+void kfd_process_set_trap_handler(struct qcm_process_device *qpd,
+				  uint64_t tba_addr,
+				  uint64_t tma_addr);
+
+/* CRIU */
+/*
+ * Need to increment KFD_CRIU_PRIV_VERSION each time a change is made to any of the CRIU private
+ * structures:
+ * kfd_criu_process_priv_data
+ * kfd_criu_device_priv_data
+ * kfd_criu_bo_priv_data
+ * kfd_criu_queue_priv_data
+ * kfd_criu_event_priv_data
+ * kfd_criu_svm_range_priv_data
+ */
+
+#define KFD_CRIU_PRIV_VERSION 1
+
+struct kfd_criu_process_priv_data {
+	uint32_t version;
+	uint32_t xnack_mode;
+};
+
+struct kfd_criu_device_priv_data {
+	/* For future use */
+	uint64_t reserved;
+};
+
+struct kfd_criu_bo_priv_data {
+	uint64_t user_addr;
+	uint32_t idr_handle;
+	uint32_t mapped_gpuids[MAX_GPU_INSTANCE];
+};
+
+/*
+ * The first 4 bytes of kfd_criu_queue_priv_data, kfd_criu_event_priv_data,
+ * kfd_criu_svm_range_priv_data is the object type
+ */
+enum kfd_criu_object_type {
+	KFD_CRIU_OBJECT_TYPE_QUEUE,
+	KFD_CRIU_OBJECT_TYPE_EVENT,
+	KFD_CRIU_OBJECT_TYPE_SVM_RANGE,
+};
+
+struct kfd_criu_svm_range_priv_data {
+	uint32_t object_type;
+	uint64_t start_addr;
+	uint64_t size;
+	/* Variable length array of attributes */
+	struct kfd_ioctl_svm_attribute attrs[];
+};
+
+struct kfd_criu_queue_priv_data {
+	uint32_t object_type;
+	uint64_t q_address;
+	uint64_t q_size;
+	uint64_t read_ptr_addr;
+	uint64_t write_ptr_addr;
+	uint64_t doorbell_off;
+	uint64_t eop_ring_buffer_address;
+	uint64_t ctx_save_restore_area_address;
+	uint32_t gpu_id;
+	uint32_t type;
+	uint32_t format;
+	uint32_t q_id;
+	uint32_t priority;
+	uint32_t q_percent;
+	uint32_t doorbell_id;
+	uint32_t gws;
+	uint32_t sdma_id;
+	uint32_t eop_ring_buffer_size;
+	uint32_t ctx_save_restore_area_size;
+	uint32_t ctl_stack_size;
+	uint32_t mqd_size;
+};
+
+struct kfd_criu_event_priv_data {
+	uint32_t object_type;
+	uint64_t user_handle;
+	uint32_t event_id;
+	uint32_t auto_reset;
+	uint32_t type;
+	uint32_t signaled;
+
+	union {
+		struct kfd_hsa_memory_exception_data memory_exception_data;
+		struct kfd_hsa_hw_exception_data hw_exception_data;
+	};
+};
+
+int kfd_process_get_queue_info(struct kfd_process *p,
+			       uint32_t *num_queues,
+			       uint64_t *priv_data_sizes);
+
+int kfd_criu_checkpoint_queues(struct kfd_process *p,
+			 uint8_t __user *user_priv_data,
+			 uint64_t *priv_data_offset);
+
+int kfd_criu_restore_queue(struct kfd_process *p,
+			   uint8_t __user *user_priv_data,
+			   uint64_t *priv_data_offset,
+			   uint64_t max_priv_data_size);
+
+int kfd_criu_checkpoint_events(struct kfd_process *p,
+			 uint8_t __user *user_priv_data,
+			 uint64_t *priv_data_offset);
+
+int kfd_criu_restore_event(struct file *devkfd,
+			   struct kfd_process *p,
+			   uint8_t __user *user_priv_data,
+			   uint64_t *priv_data_offset,
+			   uint64_t max_priv_data_size);
+/* CRIU - End */
+
+/* Queue Context Management */
+int init_queue(struct queue **q, const struct queue_properties *properties);
+void uninit_queue(struct queue *q);
+void print_queue_properties(struct queue_properties *q);
+void print_queue(struct queue *q);
+
+struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
+		struct kfd_dev *dev);
+struct mqd_manager *mqd_manager_init_cik_hawaii(enum KFD_MQD_TYPE type,
+		struct kfd_dev *dev);
+struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
+		struct kfd_dev *dev);
+struct mqd_manager *mqd_manager_init_vi_tonga(enum KFD_MQD_TYPE type,
+		struct kfd_dev *dev);
+struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
+		struct kfd_dev *dev);
+struct mqd_manager *mqd_manager_init_v10(enum KFD_MQD_TYPE type,
+		struct kfd_dev *dev);
+struct mqd_manager *mqd_manager_init_v11(enum KFD_MQD_TYPE type,
+		struct kfd_dev *dev);
+struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev);
+void device_queue_manager_uninit(struct device_queue_manager *dqm);
+struct kernel_queue *kernel_queue_init(struct kfd_dev *dev,
+					enum kfd_queue_type type);
+void kernel_queue_uninit(struct kernel_queue *kq, bool hanging);
+int kfd_dqm_evict_pasid(struct device_queue_manager *dqm, u32 pasid);
+
+/* Process Queue Manager */
+struct process_queue_node {
+	struct queue *q;
+	struct kernel_queue *kq;
+	struct list_head process_queue_list;
+};
+
+void kfd_process_dequeue_from_device(struct kfd_process_device *pdd);
+void kfd_process_dequeue_from_all_devices(struct kfd_process *p);
+int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p);
+void pqm_uninit(struct process_queue_manager *pqm);
+int pqm_create_queue(struct process_queue_manager *pqm,
+			    struct kfd_dev *dev,
+			    struct file *f,
+			    struct queue_properties *properties,
+			    unsigned int *qid,
+			    struct amdgpu_bo *wptr_bo,
+			    const struct kfd_criu_queue_priv_data *q_data,
+			    const void *restore_mqd,
+			    const void *restore_ctl_stack,
+			    uint32_t *p_doorbell_offset_in_process);
+int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid);
+int pqm_update_queue_properties(struct process_queue_manager *pqm, unsigned int qid,
+			struct queue_properties *p);
+int pqm_update_mqd(struct process_queue_manager *pqm, unsigned int qid,
+			struct mqd_update_info *minfo);
+int pqm_set_gws(struct process_queue_manager *pqm, unsigned int qid,
+			void *gws);
+struct kernel_queue *pqm_get_kernel_queue(struct process_queue_manager *pqm,
+						unsigned int qid);
+struct queue *pqm_get_user_queue(struct process_queue_manager *pqm,
+						unsigned int qid);
+int pqm_get_wave_state(struct process_queue_manager *pqm,
+		       unsigned int qid,
+		       void __user *ctl_stack,
+		       u32 *ctl_stack_used_size,
+		       u32 *save_area_used_size);
+
+int amdkfd_fence_wait_timeout(uint64_t *fence_addr,
+			      uint64_t fence_value,
+			      unsigned int timeout_ms);
+
+int pqm_get_queue_checkpoint_info(struct process_queue_manager *pqm,
+				  unsigned int qid,
+				  u32 *mqd_size,
+				  u32 *ctl_stack_size);
+/* Packet Manager */
+
+#define KFD_FENCE_COMPLETED (100)
+#define KFD_FENCE_INIT   (10)
+
+struct packet_manager {
+	struct device_queue_manager *dqm;
+	struct kernel_queue *priv_queue;
+	struct mutex lock;
+	bool allocated;
+	struct kfd_mem_obj *ib_buffer_obj;
+	unsigned int ib_size_bytes;
+	bool is_over_subscription;
+
+	const struct packet_manager_funcs *pmf;
+};
+
+struct packet_manager_funcs {
+	/* Support ASIC-specific packet formats for PM4 packets */
+	int (*map_process)(struct packet_manager *pm, uint32_t *buffer,
+			struct qcm_process_device *qpd);
+	int (*runlist)(struct packet_manager *pm, uint32_t *buffer,
+			uint64_t ib, size_t ib_size_in_dwords, bool chain);
+	int (*set_resources)(struct packet_manager *pm, uint32_t *buffer,
+			struct scheduling_resources *res);
+	int (*map_queues)(struct packet_manager *pm, uint32_t *buffer,
+			struct queue *q, bool is_static);
+	int (*unmap_queues)(struct packet_manager *pm, uint32_t *buffer,
+			enum kfd_unmap_queues_filter mode,
+			uint32_t filter_param, bool reset);
+	int (*query_status)(struct packet_manager *pm, uint32_t *buffer,
+			uint64_t fence_address,	uint64_t fence_value);
+	int (*release_mem)(uint64_t gpu_addr, uint32_t *buffer);
+
+	/* Packet sizes */
+	int map_process_size;
+	int runlist_size;
+	int set_resources_size;
+	int map_queues_size;
+	int unmap_queues_size;
+	int query_status_size;
+	int release_mem_size;
+};
+
+extern const struct packet_manager_funcs kfd_vi_pm_funcs;
+extern const struct packet_manager_funcs kfd_v9_pm_funcs;
+extern const struct packet_manager_funcs kfd_aldebaran_pm_funcs;
+
+int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm);
+void pm_uninit(struct packet_manager *pm, bool hanging);
+int pm_send_set_resources(struct packet_manager *pm,
+				struct scheduling_resources *res);
+int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues);
+int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
+				uint64_t fence_value);
+
+int pm_send_unmap_queue(struct packet_manager *pm,
+			enum kfd_unmap_queues_filter mode,
+			uint32_t filter_param, bool reset);
+
+void pm_release_ib(struct packet_manager *pm);
+
+/* Following PM funcs can be shared among VI and AI */
+unsigned int pm_build_pm4_header(unsigned int opcode, size_t packet_size);
+
+uint64_t kfd_get_number_elems(struct kfd_dev *kfd);
+
+/* Events */
+extern const struct kfd_event_interrupt_class event_interrupt_class_cik;
+extern const struct kfd_event_interrupt_class event_interrupt_class_v9;
+extern const struct kfd_event_interrupt_class event_interrupt_class_v11;
+
+extern const struct kfd_device_global_init_class device_global_init_class_cik;
+
+int kfd_event_init_process(struct kfd_process *p);
+void kfd_event_free_process(struct kfd_process *p);
+int kfd_event_mmap(struct kfd_process *process, struct vm_area_struct *vma);
+int kfd_wait_on_events(struct kfd_process *p,
+		       uint32_t num_events, void __user *data,
+		       bool all, uint32_t *user_timeout_ms,
+		       uint32_t *wait_result);
+void kfd_signal_event_interrupt(u32 pasid, uint32_t partial_id,
+				uint32_t valid_id_bits);
+void kfd_signal_iommu_event(struct kfd_dev *dev,
+			    u32 pasid, unsigned long address,
+			    bool is_write_requested, bool is_execute_requested);
+void kfd_signal_hw_exception_event(u32 pasid);
+int kfd_set_event(struct kfd_process *p, uint32_t event_id);
+int kfd_reset_event(struct kfd_process *p, uint32_t event_id);
+int kfd_kmap_event_page(struct kfd_process *p, uint64_t event_page_offset);
+
+int kfd_event_create(struct file *devkfd, struct kfd_process *p,
+		     uint32_t event_type, bool auto_reset, uint32_t node_id,
+		     uint32_t *event_id, uint32_t *event_trigger_data,
+		     uint64_t *event_page_offset, uint32_t *event_slot_index);
+
+int kfd_get_num_events(struct kfd_process *p);
+int kfd_event_destroy(struct kfd_process *p, uint32_t event_id);
+
+void kfd_signal_vm_fault_event(struct kfd_dev *dev, u32 pasid,
+				struct kfd_vm_fault_info *info);
+
+void kfd_signal_reset_event(struct kfd_dev *dev);
+
+void kfd_signal_poison_consumed_event(struct kfd_dev *dev, u32 pasid);
+
+void kfd_flush_tlb(struct kfd_process_device *pdd, enum TLB_FLUSH_TYPE type);
+
+static inline bool kfd_flush_tlb_after_unmap(struct kfd_dev *dev)
+{
+	return KFD_GC_VERSION(dev) > IP_VERSION(9, 4, 2) ||
+	       (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 1) && dev->sdma_fw_version >= 18) ||
+	       KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 0);
+}
+
+bool kfd_is_locked(void);
+
+/* Compute profile */
+void kfd_inc_compute_active(struct kfd_dev *dev);
+void kfd_dec_compute_active(struct kfd_dev *dev);
+
+/* Cgroup Support */
+/* Check with device cgroup if @kfd device is accessible */
+static inline int kfd_devcgroup_check_permission(struct kfd_dev *kfd)
+{
+#if defined(CONFIG_CGROUP_DEVICE) || defined(CONFIG_CGROUP_BPF)
+	struct drm_device *ddev = kfd->ddev;
+
+	return devcgroup_check_permission(DEVCG_DEV_CHAR, DRM_MAJOR,
+					  ddev->render->index,
+					  DEVCG_ACC_WRITE | DEVCG_ACC_READ);
+#else
+	return 0;
+#endif
+}
+
+/* Debugfs */
+#if defined(CONFIG_DEBUG_FS)
+
+void kfd_debugfs_init(void);
+void kfd_debugfs_fini(void);
+int kfd_debugfs_mqds_by_process(struct seq_file *m, void *data);
+int pqm_debugfs_mqds(struct seq_file *m, void *data);
+int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data);
+int dqm_debugfs_hqds(struct seq_file *m, void *data);
+int kfd_debugfs_rls_by_device(struct seq_file *m, void *data);
+int pm_debugfs_runlist(struct seq_file *m, void *data);
+
+int kfd_debugfs_hang_hws(struct kfd_dev *dev);
+int pm_debugfs_hang_hws(struct packet_manager *pm);
+int dqm_debugfs_hang_hws(struct device_queue_manager *dqm);
+
+#else
+
+static inline void kfd_debugfs_init(void) {}
+static inline void kfd_debugfs_fini(void) {}
+
+#endif
+
+#endif