+ unsigned reloc_size = 0;
+ if (device->info.gen >= 8) {
+ /* From the Broadwell PRM Vol. 2a, MI_LOAD_REGISTER_MEM::MemoryAddress:
+ *
+ * "This field specifies the address of the memory location where the
+ * register value specified in the DWord above will read from. The
+ * address specifies the DWord location of the data. Range =
+ * GraphicsVirtualAddress[63:2] for a DWord register GraphicsAddress
+ * [63:48] are ignored by the HW and assumed to be in correct
+ * canonical form [63:48] == [47]."
+ */
+ const int shift = 63 - 47;
+ reloc_size = sizeof(uint64_t);
+ *(uint64_t *)p = (((int64_t)v) << shift) >> shift;
+ } else {
+ reloc_size = sizeof(uint32_t);