-static int
-atapi_is_ready(struct disk_op_s *op)
-{
- dprintf(6, "atapi_is_ready (drive=%p)\n", op->drive_g);
-
- /* Retry TEST UNIT READY for 5 seconds unless MEDIUM NOT PRESENT is
- * reported by the device. If the device reports "IN PROGRESS",
- * 30 seconds is added. */
- int in_progress = 0;
- u64 end = calc_future_tsc(5000);
- for (;;) {
- if (check_tsc(end)) {
- dprintf(1, "test unit ready failed\n");
- return -1;
- }
-
- int ret = cdb_test_unit_ready(op);
- if (!ret)
- // Success
- break;
-
- struct cdbres_request_sense sense;
- ret = cdb_get_sense(op, &sense);
- if (ret)
- // Error - retry.
- continue;
-
- // Sense succeeded.
- if (sense.asc == 0x3a) { /* MEDIUM NOT PRESENT */
- dprintf(1, "Device reports MEDIUM NOT PRESENT\n");
- return -1;
- }
-
- if (sense.asc == 0x04 && sense.ascq == 0x01 && !in_progress) {
- /* IN PROGRESS OF BECOMING READY */
- printf("Waiting for device to detect medium... ");
- /* Allow 30 seconds more */
- end = calc_future_tsc(30000);
- in_progress = 1;
- }
- }
- return 0;
-}
-