- /*
- * Establish initial timings/prefetch for all drives.
- * Do not unnecessarily disturb any prior BIOS setup of these.
- */
- for (index = 0; index < (2 + (second_port_cmd640 << 1)); index++) {
- ide_drive_t *drive;
-
- if (index > 1) {
- if (cmd_hwif1 == NULL)
- continue;
- drive = &cmd_hwif1->drives[index & 1];
- } else {
- if (cmd_hwif0 == NULL)
- continue;
- drive = &cmd_hwif0->drives[index & 1];
- }
-
-#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
- /*
- * Reset timing to the slowest speed and turn off prefetch.
- * This way, the drive identify code has a better chance.
- */
- setup_counts [index] = 4; /* max possible */
- active_counts [index] = 16; /* max possible */
- recovery_counts [index] = 16; /* max possible */
- program_drive_counts(drive, index);
- set_prefetch_mode(drive, index, 0);
- printk("cmd640: drive%d timings/prefetch cleared\n", index);
-#else
- /*
- * Set the drive unmask flags to match the prefetch setting
- */
- check_prefetch(drive, index);
- printk("cmd640: drive%d timings/prefetch(%s) preserved\n",
- index, drive->no_io_32bit ? "off" : "on");
-#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
- }
-