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/*
* Copyright 2016 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.
*
* Authors: Christian K├Ânig
*/
#ifndef __AMDGPU_VM_H__
#define __AMDGPU_VM_H__
#include <linux/idr.h>
#include <linux/kfifo.h>
#include <linux/rbtree.h>
#include <drm/gpu_scheduler.h>
#include <drm/drm_file.h>
#include <drm/ttm/ttm_bo_driver.h>
#include <linux/sched/mm.h>
#include "amdgpu_sync.h"
#include "amdgpu_ring.h"
#include "amdgpu_ids.h"
struct amdgpu_bo_va;
struct amdgpu_job;
struct amdgpu_bo_list_entry;
/*
* GPUVM handling
*/
/* Maximum number of PTEs the hardware can write with one command */
#define AMDGPU_VM_MAX_UPDATE_SIZE 0x3FFFF
/* number of entries in page table */
#define AMDGPU_VM_PTE_COUNT(adev) (1 << (adev)->vm_manager.block_size)
#define AMDGPU_PTE_VALID (1ULL << 0)
#define AMDGPU_PTE_SYSTEM (1ULL << 1)
#define AMDGPU_PTE_SNOOPED (1ULL << 2)
/* VI only */
#define AMDGPU_PTE_EXECUTABLE (1ULL << 4)
#define AMDGPU_PTE_READABLE (1ULL << 5)
#define AMDGPU_PTE_WRITEABLE (1ULL << 6)
#define AMDGPU_PTE_FRAG(x) ((x & 0x1fULL) << 7)
/* TILED for VEGA10, reserved for older ASICs */
#define AMDGPU_PTE_PRT (1ULL << 51)
/* PDE is handled as PTE for VEGA10 */
#define AMDGPU_PDE_PTE (1ULL << 54)
#define AMDGPU_PTE_LOG (1ULL << 55)
/* PTE is handled as PDE for VEGA10 (Translate Further) */
#define AMDGPU_PTE_TF (1ULL << 56)
/* PDE Block Fragment Size for VEGA10 */
#define AMDGPU_PDE_BFS(a) ((uint64_t)a << 59)
/* For GFX9 */
#define AMDGPU_PTE_MTYPE_VG10(a) ((uint64_t)(a) << 57)
#define AMDGPU_PTE_MTYPE_VG10_MASK AMDGPU_PTE_MTYPE_VG10(3ULL)
#define AMDGPU_MTYPE_NC 0
#define AMDGPU_MTYPE_CC 2
#define AMDGPU_PTE_DEFAULT_ATC (AMDGPU_PTE_SYSTEM \
| AMDGPU_PTE_SNOOPED \
| AMDGPU_PTE_EXECUTABLE \
| AMDGPU_PTE_READABLE \
| AMDGPU_PTE_WRITEABLE \
| AMDGPU_PTE_MTYPE_VG10(AMDGPU_MTYPE_CC))
/* gfx10 */
#define AMDGPU_PTE_MTYPE_NV10(a) ((uint64_t)(a) << 48)
#define AMDGPU_PTE_MTYPE_NV10_MASK AMDGPU_PTE_MTYPE_NV10(7ULL)
/* How to programm VM fault handling */
#define AMDGPU_VM_FAULT_STOP_NEVER 0
#define AMDGPU_VM_FAULT_STOP_FIRST 1
#define AMDGPU_VM_FAULT_STOP_ALWAYS 2
/* Reserve 4MB VRAM for page tables */
#define AMDGPU_VM_RESERVED_VRAM (4ULL << 20)
/* max number of VMHUB */
#define AMDGPU_MAX_VMHUBS 3
#define AMDGPU_GFXHUB_0 0
#define AMDGPU_MMHUB_0 1
#define AMDGPU_MMHUB_1 2
/* hardcode that limit for now */
#define AMDGPU_VA_RESERVED_SIZE (1ULL << 20)
/* max vmids dedicated for process */
#define AMDGPU_VM_MAX_RESERVED_VMID 1
#define AMDGPU_VM_CONTEXT_GFX 0
#define AMDGPU_VM_CONTEXT_COMPUTE 1
/* See vm_update_mode */
#define AMDGPU_VM_USE_CPU_FOR_GFX (1 << 0)
#define AMDGPU_VM_USE_CPU_FOR_COMPUTE (1 << 1)
/* VMPT level enumerate, and the hiberachy is:
* PDB2->PDB1->PDB0->PTB
*/
enum amdgpu_vm_level {
AMDGPU_VM_PDB2,
AMDGPU_VM_PDB1,
AMDGPU_VM_PDB0,
AMDGPU_VM_PTB
};
/* base structure for tracking BO usage in a VM */
struct amdgpu_vm_bo_base {
/* constant after initialization */
struct amdgpu_vm *vm;
struct amdgpu_bo *bo;
/* protected by bo being reserved */
struct amdgpu_vm_bo_base *next;
/* protected by spinlock */
struct list_head vm_status;
/* protected by the BO being reserved */
bool moved;
};
struct amdgpu_vm_pt {
struct amdgpu_vm_bo_base base;
/* array of page tables, one for each directory entry */
struct amdgpu_vm_pt *entries;
};
/* provided by hw blocks that can write ptes, e.g., sdma */
struct amdgpu_vm_pte_funcs {
/* number of dw to reserve per operation */
unsigned copy_pte_num_dw;
/* copy pte entries from GART */
void (*copy_pte)(struct amdgpu_ib *ib,
uint64_t pe, uint64_t src,
unsigned count);
/* write pte one entry at a time with addr mapping */
void (*write_pte)(struct amdgpu_ib *ib, uint64_t pe,
uint64_t value, unsigned count,
uint32_t incr);
/* for linear pte/pde updates without addr mapping */
void (*set_pte_pde)(struct amdgpu_ib *ib,
uint64_t pe,
uint64_t addr, unsigned count,
uint32_t incr, uint64_t flags);
};
struct amdgpu_task_info {
char process_name[TASK_COMM_LEN];
char task_name[TASK_COMM_LEN];
pid_t pid;
pid_t tgid;
};
/**
* struct amdgpu_vm_update_params
*
* Encapsulate some VM table update parameters to reduce
* the number of function parameters
*
*/
struct amdgpu_vm_update_params {
/**
* @adev: amdgpu device we do this update for
*/
struct amdgpu_device *adev;
/**
* @vm: optional amdgpu_vm we do this update for
*/
struct amdgpu_vm *vm;
/**
* @direct: if changes should be made directly
*/
bool direct;
/**
* @pages_addr:
*
* DMA addresses to use for mapping
*/
dma_addr_t *pages_addr;
/**
* @job: job to used for hw submission
*/
struct amdgpu_job *job;
/**
* @num_dw_left: number of dw left for the IB
*/
unsigned int num_dw_left;
};
struct amdgpu_vm_update_funcs {
int (*map_table)(struct amdgpu_bo *bo);
int (*prepare)(struct amdgpu_vm_update_params *p, void * owner,
struct dma_fence *exclusive);
int (*update)(struct amdgpu_vm_update_params *p,
struct amdgpu_bo *bo, uint64_t pe, uint64_t addr,
unsigned count, uint32_t incr, uint64_t flags);
int (*commit)(struct amdgpu_vm_update_params *p,
struct dma_fence **fence);
};
struct amdgpu_vm {
/* tree of virtual addresses mapped */
struct rb_root_cached va;
/* Lock to prevent eviction while we are updating page tables
* use vm_eviction_lock/unlock(vm)
*/
struct mutex eviction_lock;
bool evicting;
unsigned int saved_flags;
/* BOs who needs a validation */
struct list_head evicted;
/* PT BOs which relocated and their parent need an update */
struct list_head relocated;
/* per VM BOs moved, but not yet updated in the PT */
struct list_head moved;
/* All BOs of this VM not currently in the state machine */
struct list_head idle;
/* regular invalidated BOs, but not yet updated in the PT */
struct list_head invalidated;
spinlock_t invalidated_lock;
/* BO mappings freed, but not yet updated in the PT */
struct list_head freed;
/* contains the page directory */
struct amdgpu_vm_pt root;
struct dma_fence *last_update;
/* Scheduler entities for page table updates */
struct drm_sched_entity direct;
struct drm_sched_entity delayed;
/* Last submission to the scheduler entities */
struct dma_fence *last_direct;
struct dma_fence *last_delayed;
unsigned int pasid;
/* dedicated to vm */
struct amdgpu_vmid *reserved_vmid[AMDGPU_MAX_VMHUBS];
/* Flag to indicate if VM tables are updated by CPU or GPU (SDMA) */
bool use_cpu_for_update;
/* Functions to use for VM table updates */
const struct amdgpu_vm_update_funcs *update_funcs;
/* Flag to indicate ATS support from PTE for GFX9 */
bool pte_support_ats;
/* Up to 128 pending retry page faults */
DECLARE_KFIFO(faults, u64, 128);
/* Points to the KFD process VM info */
struct amdkfd_process_info *process_info;
/* List node in amdkfd_process_info.vm_list_head */
struct list_head vm_list_node;
/* Valid while the PD is reserved or fenced */
uint64_t pd_phys_addr;
/* Some basic info about the task */
struct amdgpu_task_info task_info;
/* Store positions of group of BOs */
struct ttm_lru_bulk_move lru_bulk_move;
/* mark whether can do the bulk move */
bool bulk_moveable;
/* Flag to indicate if VM is used for compute */
bool is_compute_context;
};
struct amdgpu_vm_manager {
/* Handling of VMIDs */
struct amdgpu_vmid_mgr id_mgr[AMDGPU_MAX_VMHUBS];
/* Handling of VM fences */
u64 fence_context;
unsigned seqno[AMDGPU_MAX_RINGS];
uint64_t max_pfn;
uint32_t num_level;
uint32_t block_size;
uint32_t fragment_size;
enum amdgpu_vm_level root_level;
/* vram base address for page table entry */
u64 vram_base_offset;
/* vm pte handling */
const struct amdgpu_vm_pte_funcs *vm_pte_funcs;
struct drm_gpu_scheduler *vm_pte_scheds[AMDGPU_MAX_RINGS];
unsigned vm_pte_num_scheds;
struct amdgpu_ring *page_fault;
/* partial resident texture handling */
spinlock_t prt_lock;
atomic_t num_prt_users;
/* controls how VM page tables are updated for Graphics and Compute.
* BIT0[= 0] Graphics updated by SDMA [= 1] by CPU
* BIT1[= 0] Compute updated by SDMA [= 1] by CPU
*/
int vm_update_mode;
/* PASID to VM mapping, will be used in interrupt context to
* look up VM of a page fault
*/
struct idr pasid_idr;
spinlock_t pasid_lock;
/* counter of mapped memory through xgmi */
uint32_t xgmi_map_counter;
struct mutex lock_pstate;
};
#define amdgpu_vm_copy_pte(adev, ib, pe, src, count) ((adev)->vm_manager.vm_pte_funcs->copy_pte((ib), (pe), (src), (count)))
#define amdgpu_vm_write_pte(adev, ib, pe, value, count, incr) ((adev)->vm_manager.vm_pte_funcs->write_pte((ib), (pe), (value), (count), (incr)))
#define amdgpu_vm_set_pte_pde(adev, ib, pe, addr, count, incr, flags) ((adev)->vm_manager.vm_pte_funcs->set_pte_pde((ib), (pe), (addr), (count), (incr), (flags)))
extern const struct amdgpu_vm_update_funcs amdgpu_vm_cpu_funcs;
extern const struct amdgpu_vm_update_funcs amdgpu_vm_sdma_funcs;
void amdgpu_vm_manager_init(struct amdgpu_device *adev);
void amdgpu_vm_manager_fini(struct amdgpu_device *adev);
long amdgpu_vm_wait_idle(struct amdgpu_vm *vm, long timeout);
int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm,
int vm_context, unsigned int pasid);
int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm, unsigned int pasid);
void amdgpu_vm_release_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm);
void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm);
void amdgpu_vm_get_pd_bo(struct amdgpu_vm *vm,
struct list_head *validated,
struct amdgpu_bo_list_entry *entry);
bool amdgpu_vm_ready(struct amdgpu_vm *vm);
int amdgpu_vm_validate_pt_bos(struct amdgpu_device *adev, struct amdgpu_vm *vm,
int (*callback)(void *p, struct amdgpu_bo *bo),
void *param);
int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_pipe_sync);
int amdgpu_vm_update_pdes(struct amdgpu_device *adev,
struct amdgpu_vm *vm, bool direct);
int amdgpu_vm_clear_freed(struct amdgpu_device *adev,
struct amdgpu_vm *vm,
struct dma_fence **fence);
int amdgpu_vm_handle_moved(struct amdgpu_device *adev,
struct amdgpu_vm *vm);
int amdgpu_vm_bo_update(struct amdgpu_device *adev,
struct amdgpu_bo_va *bo_va,
bool clear);
bool amdgpu_vm_evictable(struct amdgpu_bo *bo);
void amdgpu_vm_bo_invalidate(struct amdgpu_device *adev,
struct amdgpu_bo *bo, bool evicted);
uint64_t amdgpu_vm_map_gart(const dma_addr_t *pages_addr, uint64_t addr);
struct amdgpu_bo_va *amdgpu_vm_bo_find(struct amdgpu_vm *vm,
struct amdgpu_bo *bo);
struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev,
struct amdgpu_vm *vm,
struct amdgpu_bo *bo);
int amdgpu_vm_bo_map(struct amdgpu_device *adev,
struct amdgpu_bo_va *bo_va,
uint64_t addr, uint64_t offset,
uint64_t size, uint64_t flags);
int amdgpu_vm_bo_replace_map(struct amdgpu_device *adev,
struct amdgpu_bo_va *bo_va,
uint64_t addr, uint64_t offset,
uint64_t size, uint64_t flags);
int amdgpu_vm_bo_unmap(struct amdgpu_device *adev,
struct amdgpu_bo_va *bo_va,
uint64_t addr);
int amdgpu_vm_bo_clear_mappings(struct amdgpu_device *adev,
struct amdgpu_vm *vm,
uint64_t saddr, uint64_t size);
struct amdgpu_bo_va_mapping *amdgpu_vm_bo_lookup_mapping(struct amdgpu_vm *vm,
uint64_t addr);
void amdgpu_vm_bo_trace_cs(struct amdgpu_vm *vm, struct ww_acquire_ctx *ticket);
void amdgpu_vm_bo_rmv(struct amdgpu_device *adev,
struct amdgpu_bo_va *bo_va);
void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint32_t min_vm_size,
uint32_t fragment_size_default, unsigned max_level,
unsigned max_bits);
int amdgpu_vm_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring,
struct amdgpu_job *job);
void amdgpu_vm_check_compute_bug(struct amdgpu_device *adev);
void amdgpu_vm_get_task_info(struct amdgpu_device *adev, unsigned int pasid,
struct amdgpu_task_info *task_info);
bool amdgpu_vm_handle_fault(struct amdgpu_device *adev, unsigned int pasid,
uint64_t addr);
void amdgpu_vm_set_task_info(struct amdgpu_vm *vm);
void amdgpu_vm_move_to_lru_tail(struct amdgpu_device *adev,
struct amdgpu_vm *vm);
void amdgpu_vm_del_from_lru_notify(struct ttm_buffer_object *bo);
#endif