Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 337 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
new file mode 100644
index 000000000..9fa9df0c5
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -0,0 +1,337 @@
+/*
+ * 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 König
+ */
+#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 "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)
+
+/* PTBs (Page Table Blocks) need to be aligned to 32K */
+#define AMDGPU_VM_PTB_ALIGN_SIZE   32768
+
+#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)
+
+/* 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(a)    ((uint64_t)a << 57)
+#define AMDGPU_PTE_MTYPE_MASK	AMDGPU_PTE_MTYPE(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(AMDGPU_MTYPE_CC))
+
+/* 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
+
+/* max number of VMHUB */
+#define AMDGPU_MAX_VMHUBS			2
+#define AMDGPU_GFXHUB				0
+#define AMDGPU_MMHUB				1
+
+/* hardcode that limit for now */
+#define AMDGPU_VA_RESERVED_SIZE			(1ULL << 20)
+
+/* VA hole for 48bit addresses on Vega10 */
+#define AMDGPU_VA_HOLE_START			0x0000800000000000ULL
+#define AMDGPU_VA_HOLE_END			0xffff800000000000ULL
+
+/*
+ * Hardware is programmed as if the hole doesn't exists with start and end
+ * address values.
+ *
+ * This mask is used to remove the upper 16bits of the VA and so come up with
+ * the linear addr value.
+ */
+#define AMDGPU_VA_HOLE_MASK			0x0000ffffffffffffULL
+
+/* 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 list_head		bo_list;
+
+	/* 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;
+	bool				huge;
+
+	/* array of page tables, one for each directory entry */
+	struct amdgpu_vm_pt		*entries;
+};
+
+#define AMDGPU_VM_FAULT(pasid, addr) (((u64)(pasid) << 48) | (addr))
+#define AMDGPU_VM_FAULT_PASID(fault) ((u64)(fault) >> 48)
+#define AMDGPU_VM_FAULT_ADDR(fault)  ((u64)(fault) & 0xfffffffff000ULL)
+
+
+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 {
+	/* tree of virtual addresses mapped */
+	struct rb_root_cached	va;
+
+	/* BOs who needs a validation */
+	struct list_head	evicted;
+
+	/* PT BOs which relocated and their parent need an update */
+	struct list_head	relocated;
+
+	/* BOs moved, but not yet updated in the PT */
+	struct list_head	moved;
+	spinlock_t		moved_lock;
+
+	/* All BOs of this VM not currently in the state machine */
+	struct list_head	idle;
+
+	/* 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 entity for page table updates */
+	struct drm_sched_entity	entity;
+
+	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;
+
+	/* 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);
+
+	/* Limit non-retry fault storms */
+	unsigned int		fault_credit;
+
+	/* 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;
+};
+
+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 amdgpu_ring                      *vm_pte_rings[AMDGPU_MAX_RINGS];
+	unsigned				vm_pte_num_rings;
+	atomic_t				vm_pte_next_ring;
+
+	/* 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;
+};
+
+void amdgpu_vm_manager_init(struct amdgpu_device *adev);
+void amdgpu_vm_manager_fini(struct amdgpu_device *adev);
+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);
+void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm);
+bool amdgpu_vm_pasid_fault_credit(struct amdgpu_device *adev,
+				  unsigned int pasid);
+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_alloc_pts(struct amdgpu_device *adev,
+			struct amdgpu_vm *vm,
+			uint64_t saddr, uint64_t size);
+int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_pipe_sync);
+int amdgpu_vm_update_directories(struct amdgpu_device *adev,
+				 struct amdgpu_vm *vm);
+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);
+void amdgpu_vm_bo_invalidate(struct amdgpu_device *adev,
+			     struct amdgpu_bo *bo, bool evicted);
+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);
+
+void amdgpu_vm_set_task_info(struct amdgpu_vm *vm);
+
+#endif