Add memcpy functions to copy a buffer to a gpuobj and vice-versa. This
will be used by the secure boot code.
Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
---
drm/nouveau/include/nvkm/core/gpuobj.h | 4 ++++
drm/nouveau/nvkm/core/gpuobj.c | 20 ++++++++++++++++++++
2 files changed, 24 insertions(+)
diff --git a/drm/nouveau/include/nvkm/core/gpuobj.h b/drm/nouveau/include/nvkm/core/gpuobj.h
index d4f56eafb073..c23da4f05929 100644
--- a/drm/nouveau/include/nvkm/core/gpuobj.h
+++ b/drm/nouveau/include/nvkm/core/gpuobj.h
@@ -37,4 +37,8 @@ int nvkm_gpuobj_wrap(struct nvkm_memory *, struct nvkm_gpuobj **);
int nvkm_gpuobj_map(struct nvkm_gpuobj *, struct nvkm_vm *, u32 access,
struct nvkm_vma *);
void nvkm_gpuobj_unmap(struct nvkm_vma *);
+void nvkm_gpuobj_memcpy_to(struct nvkm_gpuobj *dst, u32 dstoffset, void *src,
+ u32 length);
+void nvkm_gpuobj_memcpy_from(void *dst, struct nvkm_gpuobj *src, u32 srcoffset,
+ u32 length);
#endif
diff --git a/drm/nouveau/nvkm/core/gpuobj.c b/drm/nouveau/nvkm/core/gpuobj.c
index c3a790eb8d6a..a7bd22706b2a 100644
--- a/drm/nouveau/nvkm/core/gpuobj.c
+++ b/drm/nouveau/nvkm/core/gpuobj.c
@@ -253,3 +253,23 @@ nvkm_gpuobj_wrap(struct nvkm_memory *memory, struct nvkm_gpuobj **pgpuobj)
(*pgpuobj)->size = nvkm_memory_size(memory);
return 0;
}
+
+void
+nvkm_gpuobj_memcpy_to(struct nvkm_gpuobj *dst, u32 dstoffset, void *src,
+ u32 length)
+{
+ int i;
+
+ for (i = 0; i < length; i += 4)
+ nvkm_wo32(dst, dstoffset + i, *(u32 *)(src + i));
+}
+
+void
+nvkm_gpuobj_memcpy_from(void *dst, struct nvkm_gpuobj *src, u32 srcoffset,
+ u32 length)
+{
+ int i;
+
+ for (i = 0; i < length; i += 4)
+ ((u32 *)src)[i / 4] = nvkm_ro32(src, srcoffset + i);
+}
--
2.7.1
--
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