1 files changed, 373 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_vm_types.h b/drivers/gpu/drm/xe/xe_vm_types.h
new file mode 100644
index 000000000..4027da3a1
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_vm_types.h
@@ -0,0 +1,373 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef _XE_VM_TYPES_H_
+#define _XE_VM_TYPES_H_
+
+#include <drm/drm_gpuvm.h>
+
+#include <linux/dma-resv.h>
+#include <linux/kref.h>
+#include <linux/mmu_notifier.h>
+#include <linux/scatterlist.h>
+
+#include "xe_device_types.h"
+#include "xe_pt_types.h"
+#include "xe_range_fence.h"
+
+struct xe_bo;
+struct xe_sync_entry;
+struct xe_user_fence;
+struct xe_vm;
+
+#define XE_VMA_READ_ONLY	DRM_GPUVA_USERBITS
+#define XE_VMA_DESTROYED	(DRM_GPUVA_USERBITS << 1)
+#define XE_VMA_ATOMIC_PTE_BIT	(DRM_GPUVA_USERBITS << 2)
+#define XE_VMA_FIRST_REBIND	(DRM_GPUVA_USERBITS << 3)
+#define XE_VMA_LAST_REBIND	(DRM_GPUVA_USERBITS << 4)
+#define XE_VMA_PTE_4K		(DRM_GPUVA_USERBITS << 5)
+#define XE_VMA_PTE_2M		(DRM_GPUVA_USERBITS << 6)
+#define XE_VMA_PTE_1G		(DRM_GPUVA_USERBITS << 7)
+#define XE_VMA_PTE_64K		(DRM_GPUVA_USERBITS << 8)
+#define XE_VMA_PTE_COMPACT	(DRM_GPUVA_USERBITS << 9)
+
+/** struct xe_userptr - User pointer */
+struct xe_userptr {
+	/** @invalidate_link: Link for the vm::userptr.invalidated list */
+	struct list_head invalidate_link;
+	/** @userptr: link into VM repin list if userptr. */
+	struct list_head repin_link;
+	/**
+	 * @notifier: MMU notifier for user pointer (invalidation call back)
+	 */
+	struct mmu_interval_notifier notifier;
+	/** @sgt: storage for a scatter gather table */
+	struct sg_table sgt;
+	/** @sg: allocated scatter gather table */
+	struct sg_table *sg;
+	/** @notifier_seq: notifier sequence number */
+	unsigned long notifier_seq;
+	/**
+	 * @initial_bind: user pointer has been bound at least once.
+	 * write: vm->userptr.notifier_lock in read mode and vm->resv held.
+	 * read: vm->userptr.notifier_lock in write mode or vm->resv held.
+	 */
+	bool initial_bind;
+#if IS_ENABLED(CONFIG_DRM_XE_USERPTR_INVAL_INJECT)
+	u32 divisor;
+#endif
+};
+
+struct xe_vma {
+	/** @gpuva: Base GPUVA object */
+	struct drm_gpuva gpuva;
+
+	/**
+	 * @combined_links: links into lists which are mutually exclusive.
+	 * Locking: vm lock in write mode OR vm lock in read mode and the vm's
+	 * resv.
+	 */
+	union {
+		/** @rebind: link into VM if this VMA needs rebinding. */
+		struct list_head rebind;
+		/** @destroy: link to contested list when VM is being closed. */
+		struct list_head destroy;
+	} combined_links;
+
+	union {
+		/** @destroy_cb: callback to destroy VMA when unbind job is done */
+		struct dma_fence_cb destroy_cb;
+		/** @destroy_work: worker to destroy this BO */
+		struct work_struct destroy_work;
+	};
+
+	/** @tile_invalidated: VMA has been invalidated */
+	u8 tile_invalidated;
+
+	/** @tile_mask: Tile mask of where to create binding for this VMA */
+	u8 tile_mask;
+
+	/**
+	 * @tile_present: GT mask of binding are present for this VMA.
+	 * protected by vm->lock, vm->resv and for userptrs,
+	 * vm->userptr.notifier_lock for writing. Needs either for reading,
+	 * but if reading is done under the vm->lock only, it needs to be held
+	 * in write mode.
+	 */
+	u8 tile_present;
+
+	/**
+	 * @pat_index: The pat index to use when encoding the PTEs for this vma.
+	 */
+	u16 pat_index;
+
+	/**
+	 * @ufence: The user fence that was provided with MAP.
+	 * Needs to be signalled before UNMAP can be processed.
+	 */
+	struct xe_user_fence *ufence;
+};
+
+/**
+ * struct xe_userptr_vma - A userptr vma subclass
+ * @vma: The vma.
+ * @userptr: Additional userptr information.
+ */
+struct xe_userptr_vma {
+	struct xe_vma vma;
+	struct xe_userptr userptr;
+};
+
+struct xe_device;
+
+struct xe_vm {
+	/** @gpuvm: base GPUVM used to track VMAs */
+	struct drm_gpuvm gpuvm;
+
+	struct xe_device *xe;
+
+	/* exec queue used for (un)binding vma's */
+	struct xe_exec_queue *q[XE_MAX_TILES_PER_DEVICE];
+
+	/** @lru_bulk_move: Bulk LRU move list for this VM's BOs */
+	struct ttm_lru_bulk_move lru_bulk_move;
+
+	u64 size;
+
+	struct xe_pt *pt_root[XE_MAX_TILES_PER_DEVICE];
+	struct xe_pt *scratch_pt[XE_MAX_TILES_PER_DEVICE][XE_VM_MAX_LEVEL];
+
+	/**
+	 * @flags: flags for this VM, statically setup a creation time aside
+	 * from XE_VM_FLAG_BANNED which requires vm->lock to set / read safely
+	 */
+#define XE_VM_FLAG_64K			BIT(0)
+#define XE_VM_FLAG_LR_MODE		BIT(1)
+#define XE_VM_FLAG_MIGRATION		BIT(2)
+#define XE_VM_FLAG_SCRATCH_PAGE		BIT(3)
+#define XE_VM_FLAG_FAULT_MODE		BIT(4)
+#define XE_VM_FLAG_BANNED		BIT(5)
+#define XE_VM_FLAG_TILE_ID(flags)	FIELD_GET(GENMASK(7, 6), flags)
+#define XE_VM_FLAG_SET_TILE_ID(tile)	FIELD_PREP(GENMASK(7, 6), (tile)->id)
+	unsigned long flags;
+
+	/** @composite_fence_ctx: context composite fence */
+	u64 composite_fence_ctx;
+	/** @composite_fence_seqno: seqno for composite fence */
+	u32 composite_fence_seqno;
+
+	/**
+	 * @lock: outer most lock, protects objects of anything attached to this
+	 * VM
+	 */
+	struct rw_semaphore lock;
+
+	/**
+	 * @rebind_list: list of VMAs that need rebinding. Protected by the
+	 * vm->lock in write mode, OR (the vm->lock in read mode and the
+	 * vm resv).
+	 */
+	struct list_head rebind_list;
+
+	/**
+	 * @destroy_work: worker to destroy VM, needed as a dma_fence signaling
+	 * from an irq context can be last put and the destroy needs to be able
+	 * to sleep.
+	 */
+	struct work_struct destroy_work;
+
+	/**
+	 * @rftree: range fence tree to track updates to page table structure.
+	 * Used to implement conflict tracking between independent bind engines.
+	 */
+	struct xe_range_fence_tree rftree[XE_MAX_TILES_PER_DEVICE];
+
+	/** @async_ops: async VM operations (bind / unbinds) */
+	struct {
+		/** @list: list of pending async VM ops */
+		struct list_head pending;
+		/** @work: worker to execute async VM ops */
+		struct work_struct work;
+		/** @lock: protects list of pending async VM ops and fences */
+		spinlock_t lock;
+		/** @fence: fence state */
+		struct {
+			/** @context: context of async fence */
+			u64 context;
+			/** @seqno: seqno of async fence */
+			u32 seqno;
+		} fence;
+		/** @error: error state for async VM ops */
+		int error;
+		/**
+		 * @munmap_rebind_inflight: an munmap style VM bind is in the
+		 * middle of a set of ops which requires a rebind at the end.
+		 */
+		bool munmap_rebind_inflight;
+	} async_ops;
+
+	const struct xe_pt_ops *pt_ops;
+
+	/** @userptr: user pointer state */
+	struct {
+		/**
+		 * @userptr.repin_list: list of VMAs which are user pointers,
+		 * and needs repinning. Protected by @lock.
+		 */
+		struct list_head repin_list;
+		/**
+		 * @notifier_lock: protects notifier in write mode and
+		 * submission in read mode.
+		 */
+		struct rw_semaphore notifier_lock;
+		/**
+		 * @userptr.invalidated_lock: Protects the
+		 * @userptr.invalidated list.
+		 */
+		spinlock_t invalidated_lock;
+		/**
+		 * @userptr.invalidated: List of invalidated userptrs, not yet
+		 * picked
+		 * up for revalidation. Protected from access with the
+		 * @invalidated_lock. Removing items from the list
+		 * additionally requires @lock in write mode, and adding
+		 * items to the list requires the @userptr.notifer_lock in
+		 * write mode.
+		 */
+		struct list_head invalidated;
+	} userptr;
+
+	/** @preempt: preempt state */
+	struct {
+		/**
+		 * @min_run_period_ms: The minimum run period before preempting
+		 * an engine again
+		 */
+		s64 min_run_period_ms;
+		/** @exec_queues: list of exec queues attached to this VM */
+		struct list_head exec_queues;
+		/** @num_exec_queues: number exec queues attached to this VM */
+		int num_exec_queues;
+		/**
+		 * @rebind_deactivated: Whether rebind has been temporarily deactivated
+		 * due to no work available. Protected by the vm resv.
+		 */
+		bool rebind_deactivated;
+		/**
+		 * @rebind_work: worker to rebind invalidated userptrs / evicted
+		 * BOs
+		 */
+		struct work_struct rebind_work;
+	} preempt;
+
+	/** @um: unified memory state */
+	struct {
+		/** @asid: address space ID, unique to each VM */
+		u32 asid;
+		/**
+		 * @last_fault_vma: Last fault VMA, used for fast lookup when we
+		 * get a flood of faults to the same VMA
+		 */
+		struct xe_vma *last_fault_vma;
+	} usm;
+
+	/** @error_capture: allow to track errors */
+	struct {
+		/** @capture_once: capture only one error per VM */
+		bool capture_once;
+	} error_capture;
+
+	/**
+	 * @tlb_flush_seqno: Required TLB flush seqno for the next exec.
+	 * protected by the vm resv.
+	 */
+	u64 tlb_flush_seqno;
+	/** @batch_invalidate_tlb: Always invalidate TLB before batch start */
+	bool batch_invalidate_tlb;
+	/** @xef: XE file handle for tracking this VM's drm client */
+	struct xe_file *xef;
+};
+
+/** struct xe_vma_op_map - VMA map operation */
+struct xe_vma_op_map {
+	/** @vma: VMA to map */
+	struct xe_vma *vma;
+	/** @is_null: is NULL binding */
+	bool is_null;
+	/** @pat_index: The pat index to use for this operation. */
+	u16 pat_index;
+};
+
+/** struct xe_vma_op_remap - VMA remap operation */
+struct xe_vma_op_remap {
+	/** @prev: VMA preceding part of a split mapping */
+	struct xe_vma *prev;
+	/** @next: VMA subsequent part of a split mapping */
+	struct xe_vma *next;
+	/** @start: start of the VMA unmap */
+	u64 start;
+	/** @range: range of the VMA unmap */
+	u64 range;
+	/** @skip_prev: skip prev rebind */
+	bool skip_prev;
+	/** @skip_next: skip next rebind */
+	bool skip_next;
+	/** @unmap_done: unmap operation in done */
+	bool unmap_done;
+};
+
+/** struct xe_vma_op_prefetch - VMA prefetch operation */
+struct xe_vma_op_prefetch {
+	/** @region: memory region to prefetch to */
+	u32 region;
+};
+
+/** enum xe_vma_op_flags - flags for VMA operation */
+enum xe_vma_op_flags {
+	/** @XE_VMA_OP_FIRST: first VMA operation for a set of syncs */
+	XE_VMA_OP_FIRST			= BIT(0),
+	/** @XE_VMA_OP_LAST: last VMA operation for a set of syncs */
+	XE_VMA_OP_LAST			= BIT(1),
+	/** @XE_VMA_OP_COMMITTED: VMA operation committed */
+	XE_VMA_OP_COMMITTED		= BIT(2),
+	/** @XE_VMA_OP_PREV_COMMITTED: Previous VMA operation committed */
+	XE_VMA_OP_PREV_COMMITTED	= BIT(3),
+	/** @XE_VMA_OP_NEXT_COMMITTED: Next VMA operation committed */
+	XE_VMA_OP_NEXT_COMMITTED	= BIT(4),
+};
+
+/** struct xe_vma_op - VMA operation */
+struct xe_vma_op {
+	/** @base: GPUVA base operation */
+	struct drm_gpuva_op base;
+	/**
+	 * @ops: GPUVA ops, when set call drm_gpuva_ops_free after this
+	 * operations is processed
+	 */
+	struct drm_gpuva_ops *ops;
+	/** @q: exec queue for this operation */
+	struct xe_exec_queue *q;
+	/**
+	 * @syncs: syncs for this operation, only used on first and last
+	 * operation
+	 */
+	struct xe_sync_entry *syncs;
+	/** @num_syncs: number of syncs */
+	u32 num_syncs;
+	/** @link: async operation link */
+	struct list_head link;
+	/** @flags: operation flags */
+	enum xe_vma_op_flags flags;
+
+	union {
+		/** @map: VMA map operation specific data */
+		struct xe_vma_op_map map;
+		/** @remap: VMA remap operation specific data */
+		struct xe_vma_op_remap remap;
+		/** @prefetch: VMA prefetch operation specific data */
+		struct xe_vma_op_prefetch prefetch;
+	};
+};
+#endif