TRACE_BUFFER_ENTRY_OFFSET
outbox0.base = DMUB_REGION5_BASE + TRACE_BUFFER_ENTRY_OFFSET;
outbox0.top = outbox0.base + tracebuff_fb->size - TRACE_BUFFER_ENTRY_OFFSET;
outbox0_rb_params.base_address = (void *)((uintptr_t)(tracebuff_fb->cpu_addr) + TRACE_BUFFER_ENTRY_OFFSET);
outbox0_rb_params.capacity = tracebuff_fb->size - dmub_align(TRACE_BUFFER_ENTRY_OFFSET, 64);