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drm/nouveau/bo: add helper functions for handling pinned+mapped buffers 

This is a common, awkward sequence.  Let's wrap it up!

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2018-01-12 17:05:03 +10:00
parent 27cda22332
commit 561464ea54
1 changed files with 28 additions and 0 deletions
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28
drivers/gpu/drm/nouveau/nouveau_bo.h
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@ -105,4 +105,32 @@ nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
return ioptr;
}
static inline void
nouveau_bo_unmap_unpin_unref(struct nouveau_bo **pnvbo)
{
if (*pnvbo) {
nouveau_bo_unmap(*pnvbo);
nouveau_bo_unpin(*pnvbo);
nouveau_bo_ref(NULL, pnvbo);
}
}
static inline int
nouveau_bo_new_pin_map(struct nouveau_cli *cli, u64 size, int align, u32 flags,
struct nouveau_bo **pnvbo)
{
int ret = nouveau_bo_new(cli, size, align, flags,
0, 0, NULL, NULL, pnvbo);
if (ret == 0) {
ret = nouveau_bo_pin(*pnvbo, flags, true);
if (ret == 0) {
ret = nouveau_bo_map(*pnvbo);
if (ret == 0)
return ret;
nouveau_bo_unpin(*pnvbo);
}
nouveau_bo_ref(NULL, pnvbo);
}
return ret;
}
#endif