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drm/nouveau/core/mm: introduce functions to access info about a given allocation

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These will be used in upcoming patches.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2017-11-01 03:56:19 +10:00
parent 4d058fab63
commit b7e1f3f1ba
1 changed files with 30 additions and 0 deletions
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30
drivers/gpu/drm/nouveau/include/nvkm/core/mm.h
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@ -39,9 +39,39 @@ int nvkm_mm_tail(struct nvkm_mm *, u8 heap, u8 type, u32 size_max,
void nvkm_mm_free(struct nvkm_mm *, struct nvkm_mm_node **);
void nvkm_mm_dump(struct nvkm_mm *, const char *);
static inline u32
nvkm_mm_heap_size(struct nvkm_mm *mm, u8 heap)
{
struct nvkm_mm_node *node;
u32 size = 0;
list_for_each_entry(node, &mm->nodes, nl_entry) {
if (node->heap == heap)
size += node->length;
}
return size;
}
static inline bool
nvkm_mm_contiguous(struct nvkm_mm_node *node)
{
return !node->next;
}
static inline u32
nvkm_mm_addr(struct nvkm_mm_node *node)
{
if (WARN_ON(!nvkm_mm_contiguous(node)))
return 0;
return node->offset;
}
static inline u32
nvkm_mm_size(struct nvkm_mm_node *node)
{
u32 size = 0;
do {
size += node->length;
} while ((node = node->next));
return size;
}
#endif