/* 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"
#include "xe_vram_types.h"
#define XE_DEFAULT_GTT_SIZE_MB 3072 ULL /* 3GB by default */
#define XE_BO_FLAG_USER BIT(0 )
/* The bits below need to be contiguous, or things break */
#define XE_BO_FLAG_SYSTEM BIT(1 )
#define XE_BO_FLAG_VRAM0 BIT(2 )
#define XE_BO_FLAG_VRAM1 BIT(3 )
#define XE_BO_FLAG_VRAM_MASK (XE_BO_FLAG_VRAM0 | XE_BO_FLAG_VRAM1)
/* -- */
#define XE_BO_FLAG_STOLEN BIT(4 )
#define XE_BO_FLAG_VRAM(vram) (XE_BO_FLAG_VRAM0 << ((vram)->id))
#define XE_BO_FLAG_VRAM_IF_DGFX(tile) (IS_DGFX(tile_to_xe(tile)) ? \
XE_BO_FLAG_VRAM((tile)->mem.vram) : \
XE_BO_FLAG_SYSTEM)
#define XE_BO_FLAG_GGTT BIT(5 )
#define XE_BO_FLAG_IGNORE_MIN_PAGE_SIZE BIT(6 )
#define XE_BO_FLAG_PINNED BIT(7 )
#define XE_BO_FLAG_NO_RESV_EVICT BIT(8 )
#define XE_BO_FLAG_DEFER_BACKING BIT(9 )
#define XE_BO_FLAG_SCANOUT BIT(10 )
#define XE_BO_FLAG_FIXED_PLACEMENT BIT(11 )
#define XE_BO_FLAG_PAGETABLE BIT(12 )
#define XE_BO_FLAG_NEEDS_CPU_ACCESS BIT(13 )
#define XE_BO_FLAG_NEEDS_UC BIT(14 )
#define XE_BO_FLAG_NEEDS_64K BIT(15 )
#define XE_BO_FLAG_NEEDS_2M BIT(16 )
#define XE_BO_FLAG_GGTT_INVALIDATE BIT(17 )
#define XE_BO_FLAG_PINNED_NORESTORE BIT(18 )
#define XE_BO_FLAG_PINNED_LATE_RESTORE BIT(19 )
#define XE_BO_FLAG_GGTT0 BIT(20 )
#define XE_BO_FLAG_GGTT1 BIT(21 )
#define XE_BO_FLAG_GGTT2 BIT(22 )
#define XE_BO_FLAG_GGTT3 BIT(23 )
#define XE_BO_FLAG_CPU_ADDR_MIRROR BIT(24 )
/* this one is trigger internally only */
#define XE_BO_FLAG_INTERNAL_TEST BIT(30 )
#define XE_BO_FLAG_INTERNAL_64K BIT(31 )
#define XE_BO_FLAG_GGTT_ALL (XE_BO_FLAG_GGTT0 | \
XE_BO_FLAG_GGTT1 | \
XE_BO_FLAG_GGTT2 | \
XE_BO_FLAG_GGTT3)
#define XE_BO_FLAG_GGTTx(tile) \
(XE_BO_FLAG_GGTT0 << (tile)->id)
#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_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 )
#define XE_PCI_BARRIER_MMAP_OFFSET (0 x50 << XE_PTE_SHIFT)
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, u64 alignment);
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,
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_pin_map_at_aligned(struct xe_device *xe,
struct xe_tile *tile,
struct xe_vm *vm,
size_t size, u64 offset,
enum ttm_bo_type type, u32 flags,
u64 alignment);
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_managed_bo_reinit_in_vram(struct xe_device *xe, struct xe_tile *tile, struct xe_bo **src);
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;
}
void xe_bo_put(struct xe_bo *bo);
/*
* xe_bo_get_unless_zero ( ) - Conditionally obtain a GEM object refcount on an
* xe bo
* @ bo : The bo for which we want to obtain a refcount .
*
* There is a short window between where the bo ' s GEM object refcount reaches
* zero and where we put the final ttm_bo reference . Code in the eviction - and
* shrinking path should therefore attempt to grab a gem object reference before
* trying to use members outside of the base class ttm object . This function is
* intended for that purpose . On successful return , this function must be paired
* with an xe_bo_put ( ) .
*
* Return : @ bo on success , NULL on failure .
*/
static inline __must_check struct xe_bo *xe_bo_get_unless_zero(struct xe_bo *bo)
{
if (!bo || !kref_get_unless_zero(&bo->ttm.base.refcount))
return NULL;
return bo;
}
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, bool in_place);
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 bool xe_bo_is_protected(const struct xe_bo *bo)
{
return bo->pxp_key_instance;
}
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);
}
/**
* xe_bo_size ( ) - Xe BO size
* @ bo : The bo object .
*
* Simple helper to return Xe BO ' s size .
*
* Return : Xe BO ' s size
*/
static inline size_t xe_bo_size(struct xe_bo *bo)
{
return bo->ttm.base.size;
}
static inline u32
__xe_bo_ggtt_addr(struct xe_bo *bo, u8 tile_id)
{
struct xe_ggtt_node *ggtt_node = bo->ggtt_node[tile_id];
if (XE_WARN_ON(!ggtt_node))
return 0 ;
XE_WARN_ON(ggtt_node->base.size > xe_bo_size(bo));
XE_WARN_ON(ggtt_node->base.start + ggtt_node->base.size > (1 ull << 32 ));
return ggtt_node->base.start;
}
static inline u32
xe_bo_ggtt_addr(struct xe_bo *bo)
{
xe_assert(xe_bo_device(bo), bo->tile);
return __xe_bo_ggtt_addr(bo, bo->tile->id);
}
int xe_bo_vmap(struct xe_bo *bo);
void xe_bo_vunmap(struct xe_bo *bo);
int xe_bo_read(struct xe_bo *bo, u64 offset, void *dst, int size);
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);
bool xe_bo_is_vm_bound(struct xe_bo *bo);
bool xe_bo_has_single_placement(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);
int xe_bo_evict_pinned(struct xe_bo *bo);
int xe_bo_notifier_prepare_pinned(struct xe_bo *bo);
int xe_bo_notifier_unprepare_pinned(struct xe_bo *bo);
int xe_bo_restore_pinned(struct xe_bo *bo);
int xe_bo_dma_unmap_pinned(struct xe_bo *bo);
extern const struct ttm_device_funcs xe_ttm_funcs;
extern const char *const xe_mem_type_to_name[];
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);
void xe_bo_runtime_pm_release_mmap_offset(struct xe_bo *bo);
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(xe_bo_size(bo));
}
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);
/**
* xe_bo_put_async ( ) - Put BO async
* @ bo : The bo to put .
*
* Put BO async , the final put is deferred to a worker to exit an IRQ context .
*/
static inline void
xe_bo_put_async(struct xe_bo *bo)
{
struct xe_bo_dev *bo_device = &xe_bo_device(bo)->bo_device;
if (xe_bo_put_deferred(bo, &bo_device->async_list))
schedule_work(&bo_device->async_free);
}
void xe_bo_dev_init(struct xe_bo_dev *bo_device);
void xe_bo_dev_fini(struct xe_bo_dev *bo_device);
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);
}
/**
* struct xe_bo_shrink_flags - flags governing the shrink behaviour .
* @ purge : Only purging allowed . Don ' t shrink if bo not purgeable .
* @ writeback : Attempt to immediately move content to swap .
*/
struct xe_bo_shrink_flags {
u32 purge : 1 ;
u32 writeback : 1 ;
};
long xe_bo_shrink(struct ttm_operation_ctx *ctx, struct ttm_buffer_object *bo,
const struct xe_bo_shrink_flags flags,
unsigned long *scanned);
/**
* 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
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