+static void get_checkpoint_info(struct mqd_manager *mm, void *mqd, u32 *ctl_stack_size)
+{
+ struct v9_mqd *m = get_mqd(mqd);
+
+ *ctl_stack_size = m->cp_hqd_cntl_stack_size;
+}
+
+static void checkpoint_mqd(struct mqd_manager *mm, void *mqd, void *mqd_dst, void *ctl_stack_dst)
+{
+ struct v9_mqd *m;
+ /* Control stack is located one page after MQD. */
+ void *ctl_stack = (void *)((uintptr_t)mqd + PAGE_SIZE);
+
+ m = get_mqd(mqd);
+
+ memcpy(mqd_dst, m, sizeof(struct v9_mqd));
+ memcpy(ctl_stack_dst, ctl_stack, m->cp_hqd_cntl_stack_size);
+}
+
+static void restore_mqd(struct mqd_manager *mm, void **mqd,
+ struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
+ struct queue_properties *qp,
+ const void *mqd_src,
+ const void *ctl_stack_src, u32 ctl_stack_size)
+{
+ uint64_t addr;
+ struct v9_mqd *m;
+ void *ctl_stack;
+
+ m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr;
+ addr = mqd_mem_obj->gpu_addr;
+
+ memcpy(m, mqd_src, sizeof(*m));
+
+ *mqd = m;
+ if (gart_addr)
+ *gart_addr = addr;
+
+ /* Control stack is located one page after MQD. */
+ ctl_stack = (void *)((uintptr_t)*mqd + PAGE_SIZE);
+ memcpy(ctl_stack, ctl_stack_src, ctl_stack_size);
+
+ m->cp_hqd_pq_doorbell_control =
+ qp->doorbell_off <<
+ CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET__SHIFT;
+ pr_debug("cp_hqd_pq_doorbell_control 0x%x\n",
+ m->cp_hqd_pq_doorbell_control);
+
+ qp->is_active = 0;
+}
+