ata_mselect_control(9)

okay bestie, welcome to ata_mselect_control(9) from the Kernel API Manual 💅✨ — this page is all about simulating MODE SELECT for the control page, and it's lowkey iconic.

🌸 NAME 🌸

ata_mselect_control — Simulate MODE SELECT for control page. That's the exact name, no notes.

✨ SYNOPSIS ✨

Here's the signature, character-for-character, because we do not play with kernel prototypes:

int ata_mselect_control (struct ata_queued_cmd *qc , u8 spg , const u8
*buf , int len , u16 *fp );

🎀 ARGUMENTS 🎀

• qc — storage for translated ATA taskfile. This is where the translated ATA taskfile gets stored, periodt.
• spg — target sub-page of the control page. That's the specific sub-page we're aiming at, bestie.
• buf — input buffer. The buffer coming in.
• len — number of valid bytes in the input buffer. Literally how many bytes in that input buffer are valid.
• fp — out parameter for the failed field on error. It's an out parameter, and it's about the failed field when there's an error.

💅 DESCRIPTION 💅

Prepare a taskfile to modify caching information for the device. That's the whole mission: get a taskfile ready so caching info for the device can be modified. No extra side quests.

LOCKING: None. Like, none at all — no locks in this function, bestie.

🦋 SEE ALSO 🦋

Kernel file: ./drivers/ata/libata-scsi.c — yes, that's the one.

The SEE ALSO squad is huge and we're naming every single one, no skipping:

• ata_scsi_set_passthru_sense_fields(9), ata_std_bios_param(9), ata_scsi_unlock_native_capacity(9), ata_get_identity(9), ata_cmd_ioctl(9), ata_task_ioctl(9), ata_scsi_qc_new(9), ata_to_sense_error(9), ata_gen_ata_sense(9), ata_scsi_dma_need_drain(9), ata_scsi_sdev_init(9), ata_scsi_sdev_configure(9), ata_scsi_sdev_destroy(9), ata_scsi_start_stop_xlat(9), ata_scsi_flush_xlat(9), scsi_6_lba_len(9), scsi_10_lba_len(9), scsi_16_lba_len(9), scsi_dld(9), ata_scsi_verify_xlat(9), ata_scsi_rw_xlat(9), ata_scsi_translate(9), ata_scsi_rbuf_fill(9), ata_scsiop_inq_std(9), ata_scsiop_inq_00(9), ata_scsiop_inq_80(9), ata_scsiop_inq_83(9), ata_scsiop_inq_89(9), ata_dsm_trim_pages(9), ata_scsiop_inq_b0(9), ata_scsiop_inq_b1(9), ata_scsiop_inq_b2(9), ata_scsiop_inq_b6(9), ata_scsiop_inq_b9(9), ata_scsiop_inquiry(9), modecpy(9), ata_msense_caching(9), ata_msense_control(9), ata_msense_rw_recovery(9), ata_scsiop_mode_sense(9), ata_scsiop_read_cap(9), ata_scsiop_report_luns(9), atapi_xlat(9), ata_scsi_find_dev(9), ata_scsi_pass_thru(9), ata_format_dsm_trim_descr(9), ata_scsi_write_same_xlat(9), ata_scsiop_maint_in(9), ata_scsi_report_zones_complete(9), ata_mselect_caching(9), ata_scsi_mode_select_xlat(9), ata_scsi_var_len_cdb_xlat(9), ata_get_xlat_func(9), ata_scsi_simulate(9), ata_scsi_queuecmd(9), ata_scsi_offline_dev(9), ata_scsi_remove_dev(9), ata_scsi_media_change_notify(9), ata_scsi_hotplug(9), ata_scsi_user_scan(9), ata_scsi_dev_rescan(9)

that's the whole page, bestie 🫶 — source ./drivers/ata, date October 2026, signed ata_mselect_control(9) 💖✨