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Diffstat (limited to 'drivers/gpu/drm/xe/xe_bo.h')
-rw-r--r--drivers/gpu/drm/xe/xe_bo.h355
1 files changed, 355 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_bo.h b/drivers/gpu/drm/xe/xe_bo.h
new file mode 100644
index 000000000000..9b1279aca127
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_bo.h
@@ -0,0 +1,355 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef _XE_BO_H_
+#define _XE_BO_H_
+
+#include <drm/ttm/ttm_tt.h>
+
+#include "xe_bo_types.h"
+#include "xe_macros.h"
+#include "xe_vm_types.h"
+#include "xe_vm.h"
+
+/**
+ * xe_vm_assert_held(vm) - Assert that the vm's reservation object is held.
+ * @vm: The vm
+ */
+#define xe_vm_assert_held(vm) dma_resv_assert_held(xe_vm_resv(vm))
+
+
+
+#define XE_DEFAULT_GTT_SIZE_MB 3072ULL /* 3GB by default */
+
+#define XE_BO_CREATE_USER_BIT BIT(0)
+/* The bits below need to be contiguous, or things break */
+#define XE_BO_CREATE_SYSTEM_BIT BIT(1)
+#define XE_BO_CREATE_VRAM0_BIT BIT(2)
+#define XE_BO_CREATE_VRAM1_BIT BIT(3)
+#define XE_BO_CREATE_VRAM_MASK (XE_BO_CREATE_VRAM0_BIT | \
+ XE_BO_CREATE_VRAM1_BIT)
+/* -- */
+#define XE_BO_CREATE_STOLEN_BIT BIT(4)
+#define XE_BO_CREATE_VRAM_IF_DGFX(tile) \
+ (IS_DGFX(tile_to_xe(tile)) ? XE_BO_CREATE_VRAM0_BIT << (tile)->id : \
+ XE_BO_CREATE_SYSTEM_BIT)
+#define XE_BO_CREATE_GGTT_BIT BIT(5)
+#define XE_BO_CREATE_IGNORE_MIN_PAGE_SIZE_BIT BIT(6)
+#define XE_BO_CREATE_PINNED_BIT BIT(7)
+#define XE_BO_CREATE_NO_RESV_EVICT BIT(8)
+#define XE_BO_DEFER_BACKING BIT(9)
+#define XE_BO_SCANOUT_BIT BIT(10)
+#define XE_BO_FIXED_PLACEMENT_BIT BIT(11)
+#define XE_BO_PAGETABLE BIT(12)
+#define XE_BO_NEEDS_CPU_ACCESS BIT(13)
+/* this one is trigger internally only */
+#define XE_BO_INTERNAL_TEST BIT(30)
+#define XE_BO_INTERNAL_64K BIT(31)
+
+#define XELPG_PPGTT_PTE_PAT3 BIT_ULL(62)
+#define XE2_PPGTT_PTE_PAT4 BIT_ULL(61)
+#define XE_PPGTT_PDE_PDPE_PAT2 BIT_ULL(12)
+#define XE_PPGTT_PTE_PAT2 BIT_ULL(7)
+#define XE_PPGTT_PTE_PAT1 BIT_ULL(4)
+#define XE_PPGTT_PTE_PAT0 BIT_ULL(3)
+
+#define XE_PTE_SHIFT 12
+#define XE_PAGE_SIZE (1 << XE_PTE_SHIFT)
+#define XE_PTE_MASK (XE_PAGE_SIZE - 1)
+#define XE_PDE_SHIFT (XE_PTE_SHIFT - 3)
+#define XE_PDES (1 << XE_PDE_SHIFT)
+#define XE_PDE_MASK (XE_PDES - 1)
+
+#define XE_64K_PTE_SHIFT 16
+#define XE_64K_PAGE_SIZE (1 << XE_64K_PTE_SHIFT)
+#define XE_64K_PTE_MASK (XE_64K_PAGE_SIZE - 1)
+#define XE_64K_PDE_MASK (XE_PDE_MASK >> 4)
+
+#define XE_PDE_PS_2M BIT_ULL(7)
+#define XE_PDPE_PS_1G BIT_ULL(7)
+#define XE_PDE_IPS_64K BIT_ULL(11)
+
+#define XE_GGTT_PTE_DM BIT_ULL(1)
+#define XE_USM_PPGTT_PTE_AE BIT_ULL(10)
+#define XE_PPGTT_PTE_DM BIT_ULL(11)
+#define XE_PDE_64K BIT_ULL(6)
+#define XE_PTE_PS64 BIT_ULL(8)
+#define XE_PTE_NULL BIT_ULL(9)
+
+#define XE_PAGE_PRESENT BIT_ULL(0)
+#define XE_PAGE_RW BIT_ULL(1)
+
+#define XE_PL_SYSTEM TTM_PL_SYSTEM
+#define XE_PL_TT TTM_PL_TT
+#define XE_PL_VRAM0 TTM_PL_VRAM
+#define XE_PL_VRAM1 (XE_PL_VRAM0 + 1)
+#define XE_PL_STOLEN (TTM_NUM_MEM_TYPES - 1)
+
+#define XE_BO_PROPS_INVALID (-1)
+
+struct sg_table;
+
+struct xe_bo *xe_bo_alloc(void);
+void xe_bo_free(struct xe_bo *bo);
+
+struct xe_bo *___xe_bo_create_locked(struct xe_device *xe, struct xe_bo *bo,
+ struct xe_tile *tile, struct dma_resv *resv,
+ struct ttm_lru_bulk_move *bulk, size_t size,
+ u16 cpu_caching, enum ttm_bo_type type,
+ u32 flags);
+struct xe_bo *
+xe_bo_create_locked_range(struct xe_device *xe,
+ struct xe_tile *tile, struct xe_vm *vm,
+ size_t size, u64 start, u64 end,
+ enum ttm_bo_type type, u32 flags);
+struct xe_bo *xe_bo_create_locked(struct xe_device *xe, struct xe_tile *tile,
+ struct xe_vm *vm, size_t size,
+ enum ttm_bo_type type, u32 flags);
+struct xe_bo *xe_bo_create(struct xe_device *xe, struct xe_tile *tile,
+ struct xe_vm *vm, size_t size,
+ enum ttm_bo_type type, u32 flags);
+struct xe_bo *xe_bo_create_user(struct xe_device *xe, struct xe_tile *tile,
+ struct xe_vm *vm, size_t size,
+ u16 cpu_caching,
+ enum ttm_bo_type type,
+ u32 flags);
+struct xe_bo *xe_bo_create_pin_map(struct xe_device *xe, struct xe_tile *tile,
+ struct xe_vm *vm, size_t size,
+ enum ttm_bo_type type, u32 flags);
+struct xe_bo *xe_bo_create_pin_map_at(struct xe_device *xe, struct xe_tile *tile,
+ struct xe_vm *vm, size_t size, u64 offset,
+ enum ttm_bo_type type, u32 flags);
+struct xe_bo *xe_bo_create_from_data(struct xe_device *xe, struct xe_tile *tile,
+ const void *data, size_t size,
+ enum ttm_bo_type type, u32 flags);
+struct xe_bo *xe_managed_bo_create_pin_map(struct xe_device *xe, struct xe_tile *tile,
+ size_t size, u32 flags);
+struct xe_bo *xe_managed_bo_create_from_data(struct xe_device *xe, struct xe_tile *tile,
+ const void *data, size_t size, u32 flags);
+
+int xe_bo_placement_for_flags(struct xe_device *xe, struct xe_bo *bo,
+ u32 bo_flags);
+
+static inline struct xe_bo *ttm_to_xe_bo(const struct ttm_buffer_object *bo)
+{
+ return container_of(bo, struct xe_bo, ttm);
+}
+
+static inline struct xe_bo *gem_to_xe_bo(const struct drm_gem_object *obj)
+{
+ return container_of(obj, struct xe_bo, ttm.base);
+}
+
+#define xe_bo_device(bo) ttm_to_xe_device((bo)->ttm.bdev)
+
+static inline struct xe_bo *xe_bo_get(struct xe_bo *bo)
+{
+ if (bo)
+ drm_gem_object_get(&bo->ttm.base);
+
+ return bo;
+}
+
+static inline void xe_bo_put(struct xe_bo *bo)
+{
+ if (bo)
+ drm_gem_object_put(&bo->ttm.base);
+}
+
+static inline void __xe_bo_unset_bulk_move(struct xe_bo *bo)
+{
+ if (bo)
+ ttm_bo_set_bulk_move(&bo->ttm, NULL);
+}
+
+static inline void xe_bo_assert_held(struct xe_bo *bo)
+{
+ if (bo)
+ dma_resv_assert_held((bo)->ttm.base.resv);
+}
+
+int xe_bo_lock(struct xe_bo *bo, bool intr);
+
+void xe_bo_unlock(struct xe_bo *bo);
+
+static inline void xe_bo_unlock_vm_held(struct xe_bo *bo)
+{
+ if (bo) {
+ XE_WARN_ON(bo->vm && bo->ttm.base.resv != xe_vm_resv(bo->vm));
+ if (bo->vm)
+ xe_vm_assert_held(bo->vm);
+ else
+ dma_resv_unlock(bo->ttm.base.resv);
+ }
+}
+
+int xe_bo_pin_external(struct xe_bo *bo);
+int xe_bo_pin(struct xe_bo *bo);
+void xe_bo_unpin_external(struct xe_bo *bo);
+void xe_bo_unpin(struct xe_bo *bo);
+int xe_bo_validate(struct xe_bo *bo, struct xe_vm *vm, bool allow_res_evict);
+
+static inline bool xe_bo_is_pinned(struct xe_bo *bo)
+{
+ return bo->ttm.pin_count;
+}
+
+static inline void xe_bo_unpin_map_no_vm(struct xe_bo *bo)
+{
+ if (likely(bo)) {
+ xe_bo_lock(bo, false);
+ xe_bo_unpin(bo);
+ xe_bo_unlock(bo);
+
+ xe_bo_put(bo);
+ }
+}
+
+bool xe_bo_is_xe_bo(struct ttm_buffer_object *bo);
+dma_addr_t __xe_bo_addr(struct xe_bo *bo, u64 offset, size_t page_size);
+dma_addr_t xe_bo_addr(struct xe_bo *bo, u64 offset, size_t page_size);
+
+static inline dma_addr_t
+xe_bo_main_addr(struct xe_bo *bo, size_t page_size)
+{
+ return xe_bo_addr(bo, 0, page_size);
+}
+
+static inline u32
+xe_bo_ggtt_addr(struct xe_bo *bo)
+{
+ XE_WARN_ON(bo->ggtt_node.size > bo->size);
+ XE_WARN_ON(bo->ggtt_node.start + bo->ggtt_node.size > (1ull << 32));
+ return bo->ggtt_node.start;
+}
+
+int xe_bo_vmap(struct xe_bo *bo);
+void xe_bo_vunmap(struct xe_bo *bo);
+
+bool mem_type_is_vram(u32 mem_type);
+bool xe_bo_is_vram(struct xe_bo *bo);
+bool xe_bo_is_stolen(struct xe_bo *bo);
+bool xe_bo_is_stolen_devmem(struct xe_bo *bo);
+uint64_t vram_region_gpu_offset(struct ttm_resource *res);
+
+bool xe_bo_can_migrate(struct xe_bo *bo, u32 mem_type);
+
+int xe_bo_migrate(struct xe_bo *bo, u32 mem_type);
+int xe_bo_evict(struct xe_bo *bo, bool force_alloc);
+
+int xe_bo_evict_pinned(struct xe_bo *bo);
+int xe_bo_restore_pinned(struct xe_bo *bo);
+
+extern struct ttm_device_funcs xe_ttm_funcs;
+
+int xe_gem_create_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file);
+int xe_gem_mmap_offset_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file);
+int xe_bo_dumb_create(struct drm_file *file_priv,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args);
+
+bool xe_bo_needs_ccs_pages(struct xe_bo *bo);
+
+static inline size_t xe_bo_ccs_pages_start(struct xe_bo *bo)
+{
+ return PAGE_ALIGN(bo->ttm.base.size);
+}
+
+static inline bool xe_bo_has_pages(struct xe_bo *bo)
+{
+ if ((bo->ttm.ttm && ttm_tt_is_populated(bo->ttm.ttm)) ||
+ xe_bo_is_vram(bo))
+ return true;
+
+ return false;
+}
+
+void __xe_bo_release_dummy(struct kref *kref);
+
+/**
+ * xe_bo_put_deferred() - Put a buffer object with delayed final freeing
+ * @bo: The bo to put.
+ * @deferred: List to which to add the buffer object if we cannot put, or
+ * NULL if the function is to put unconditionally.
+ *
+ * Since the final freeing of an object includes both sleeping and (!)
+ * memory allocation in the dma_resv individualization, it's not ok
+ * to put an object from atomic context nor from within a held lock
+ * tainted by reclaim. In such situations we want to defer the final
+ * freeing until we've exited the restricting context, or in the worst
+ * case to a workqueue.
+ * This function either puts the object if possible without the refcount
+ * reaching zero, or adds it to the @deferred list if that was not possible.
+ * The caller needs to follow up with a call to xe_bo_put_commit() to actually
+ * put the bo iff this function returns true. It's safe to always
+ * follow up with a call to xe_bo_put_commit().
+ * TODO: It's TTM that is the villain here. Perhaps TTM should add an
+ * interface like this.
+ *
+ * Return: true if @bo was the first object put on the @freed list,
+ * false otherwise.
+ */
+static inline bool
+xe_bo_put_deferred(struct xe_bo *bo, struct llist_head *deferred)
+{
+ if (!deferred) {
+ xe_bo_put(bo);
+ return false;
+ }
+
+ if (!kref_put(&bo->ttm.base.refcount, __xe_bo_release_dummy))
+ return false;
+
+ return llist_add(&bo->freed, deferred);
+}
+
+void xe_bo_put_commit(struct llist_head *deferred);
+
+struct sg_table *xe_bo_sg(struct xe_bo *bo);
+
+/*
+ * xe_sg_segment_size() - Provides upper limit for sg segment size.
+ * @dev: device pointer
+ *
+ * Returns the maximum segment size for the 'struct scatterlist'
+ * elements.
+ */
+static inline unsigned int xe_sg_segment_size(struct device *dev)
+{
+ struct scatterlist __maybe_unused sg;
+ size_t max = BIT_ULL(sizeof(sg.length) * 8) - 1;
+
+ max = min_t(size_t, max, dma_max_mapping_size(dev));
+
+ /*
+ * The iommu_dma_map_sg() function ensures iova allocation doesn't
+ * cross dma segment boundary. It does so by padding some sg elements.
+ * This can cause overflow, ending up with sg->length being set to 0.
+ * Avoid this by ensuring maximum segment size is half of 'max'
+ * rounded down to PAGE_SIZE.
+ */
+ return round_down(max / 2, PAGE_SIZE);
+}
+
+#define i915_gem_object_flush_if_display(obj) ((void)(obj))
+
+#if IS_ENABLED(CONFIG_DRM_XE_KUNIT_TEST)
+/**
+ * xe_bo_is_mem_type - Whether the bo currently resides in the given
+ * TTM memory type
+ * @bo: The bo to check.
+ * @mem_type: The TTM memory type.
+ *
+ * Return: true iff the bo resides in @mem_type, false otherwise.
+ */
+static inline bool xe_bo_is_mem_type(struct xe_bo *bo, u32 mem_type)
+{
+ xe_bo_assert_held(bo);
+ return bo->ttm.resource->mem_type == mem_type;
+}
+#endif
+#endif