mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-18 02:36:43 +07:00
55fb74adc6
There is no reason to keep the gem object separately allocated. nouveau is the last user of gem_obj->driver_private, so if we embed it, we can get rid of 8bytes per gem-object. The implementation follows the radeon driver. bo->gem is only valid, iff the bo was created via the gem helpers _and_ iff the user holds a valid gem reference. That is, as the gem object holds a reference to the nouveau_bo. If you use nouveau_ref() to gain a bo reference, you are not guaranteed to also hold a gem reference. The gem object might get destroyed after the last user drops the gem-ref via drm_gem_object_unreference(). Use drm_gem_object_reference() to gain a gem-reference. For debugging, we can use bo->gem.filp != NULL to test whether a gem-bo is valid. However, this shouldn't be used for real functionality to avoid gem-internal dependencies. Note that the implementation follows the previous style. However, we no longer can check for bo->gem != NULL to test for a valid gem object. This wasn't done before, so we should be safe now. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Reviewed-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
#ifndef __NOUVEAU_BO_H__
|
|
#define __NOUVEAU_BO_H__
|
|
|
|
struct nouveau_channel;
|
|
struct nouveau_fence;
|
|
struct nouveau_vma;
|
|
|
|
struct nouveau_bo {
|
|
struct ttm_buffer_object bo;
|
|
struct ttm_placement placement;
|
|
u32 valid_domains;
|
|
u32 placements[3];
|
|
u32 busy_placements[3];
|
|
struct ttm_bo_kmap_obj kmap;
|
|
struct list_head head;
|
|
|
|
/* protected by ttm_bo_reserve() */
|
|
struct drm_file *reserved_by;
|
|
struct list_head entry;
|
|
int pbbo_index;
|
|
bool validate_mapped;
|
|
|
|
struct list_head vma_list;
|
|
unsigned page_shift;
|
|
|
|
u32 tile_mode;
|
|
u32 tile_flags;
|
|
struct nouveau_drm_tile *tile;
|
|
|
|
/* Only valid if allocated via nouveau_gem_new() and iff you hold a
|
|
* gem reference to it! For debugging, use gem.filp != NULL to test
|
|
* whether it is valid. */
|
|
struct drm_gem_object gem;
|
|
|
|
/* protect by the ttm reservation lock */
|
|
int pin_refcnt;
|
|
|
|
struct ttm_bo_kmap_obj dma_buf_vmap;
|
|
};
|
|
|
|
static inline struct nouveau_bo *
|
|
nouveau_bo(struct ttm_buffer_object *bo)
|
|
{
|
|
return container_of(bo, struct nouveau_bo, bo);
|
|
}
|
|
|
|
static inline int
|
|
nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
|
|
{
|
|
struct nouveau_bo *prev;
|
|
|
|
if (!pnvbo)
|
|
return -EINVAL;
|
|
prev = *pnvbo;
|
|
|
|
*pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
|
|
if (prev) {
|
|
struct ttm_buffer_object *bo = &prev->bo;
|
|
|
|
ttm_bo_unref(&bo);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
extern struct ttm_bo_driver nouveau_bo_driver;
|
|
|
|
void nouveau_bo_move_init(struct nouveau_drm *);
|
|
int nouveau_bo_new(struct drm_device *, int size, int align, u32 flags,
|
|
u32 tile_mode, u32 tile_flags, struct sg_table *sg,
|
|
struct nouveau_bo **);
|
|
int nouveau_bo_pin(struct nouveau_bo *, u32 flags);
|
|
int nouveau_bo_unpin(struct nouveau_bo *);
|
|
int nouveau_bo_map(struct nouveau_bo *);
|
|
void nouveau_bo_unmap(struct nouveau_bo *);
|
|
void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
|
|
u16 nouveau_bo_rd16(struct nouveau_bo *, unsigned index);
|
|
void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
|
|
u32 nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
|
|
void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
|
|
void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *);
|
|
int nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
|
|
bool no_wait_gpu);
|
|
|
|
struct nouveau_vma *
|
|
nouveau_bo_vma_find(struct nouveau_bo *, struct nouveau_vm *);
|
|
|
|
int nouveau_bo_vma_add(struct nouveau_bo *, struct nouveau_vm *,
|
|
struct nouveau_vma *);
|
|
void nouveau_bo_vma_del(struct nouveau_bo *, struct nouveau_vma *);
|
|
|
|
/* TODO: submit equivalent to TTM generic API upstream? */
|
|
static inline void __iomem *
|
|
nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
|
|
{
|
|
bool is_iomem;
|
|
void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual(
|
|
&nvbo->kmap, &is_iomem);
|
|
WARN_ON_ONCE(ioptr && !is_iomem);
|
|
return ioptr;
|
|
}
|
|
|
|
#endif
|