Merge tag 'io_uring-5.15-2021-09-11' of git://git.kernel.dk/linux-block

[linux-2.6-microblaze.git] / drivers / gpu / drm / amd / pm / inc / amdgpu_smu.h

diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
index 715b422..8156729 100644 (file)
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
@@ -1335,6 +1335,30 @@ enum smu_cmn2asic_mapping_type {
 #define WORKLOAD_MAP(profile, workload) \
        [profile] = {1, (workload)}
 
+/**
+ * smu_memcpy_trailing - Copy the end of one structure into the middle of another
+ *
+ * @dst: Pointer to destination struct
+ * @first_dst_member: The member name in @dst where the overwrite begins
+ * @last_dst_member: The member name in @dst where the overwrite ends after
+ * @src: Pointer to the source struct
+ * @first_src_member: The member name in @src where the copy begins
+ *
+ */
+#define smu_memcpy_trailing(dst, first_dst_member, last_dst_member,       \
+                           src, first_src_member)                         \
+({                                                                        \
+       size_t __src_offset = offsetof(typeof(*(src)), first_src_member);  \
+       size_t __src_size = sizeof(*(src)) - __src_offset;                 \
+       size_t __dst_offset = offsetof(typeof(*(dst)), first_dst_member);  \
+       size_t __dst_size = offsetofend(typeof(*(dst)), last_dst_member) - \
+                           __dst_offset;                                  \
+       BUILD_BUG_ON(__src_size != __dst_size);                            \
+       __builtin_memcpy((u8 *)(dst) + __dst_offset,                       \
+                        (u8 *)(src) + __src_offset,                       \
+                        __dst_size);                                      \
+})
+
 #if !defined(SWSMU_CODE_LAYER_L2) && !defined(SWSMU_CODE_LAYER_L3) && !defined(SWSMU_CODE_LAYER_L4)
 int smu_get_power_limit(void *handle,
                        uint32_t *limit,