it821x_firmware_command(9)

💖 it821x_firmware_command(9) 💖

okay so bestie, this is straight from the Kernel API Manual, and it's giving kernel-level firmware energy ✨ — the function is literally it821x_firmware_command, and the whole point is issuing a firmware command. No cap.

🌸 NAME 🌸

it821x_firmware_command — issue firmware command 💅

✨ SYNOPSIS ✨

u8 * it821x_firmware_command (struct ata_port *ap , u8 cmd , int len );

🎀 ARGUMENTS 🎀

• ap — the IT821x port to interrogate 🔍
• cmd — the command 💫
• len — the length 📏

🦋 DESCRIPTION 🦋

okay so what it does: it issues firmware commands expecting data back from the controller. We use this to issue commands that do not go via the normal paths. Other commands, like 0xFC, can be issued normally. periodt 💖

🌈 SEE ALSO 🌈

Kernel file: ./drivers/ata/pata_it821x.c — iconic file path, iykyk 📁✨

• it821x_program(9)
• it821x_program_udma(9)
• it821x_clock_strategy(9)
• it821x_passthru_set_piomode(9)
• it821x_passthru_set_dmamode(9)
• it821x_passthru_bmdma_start(9)
• it821x_passthru_bmdma_stop(9)
• it821x_passthru_dev_select(9)
• it821x_smart_qc_issue(9)
• it821x_passthru_qc_issue(9)
• it821x_smart_set_mode(9)
• it821x_dev_config(9)
• it821x_read_id(9)
• it821x_check_atapi_dma(9)
• it821x_display_disk(9)
• it821x_probe_firmware(9)
• it821x_port_start(9)
• it821x_rdc_cable(9)

and that's the whole vibe 💜 this page lives under ./drivers/ata and is dated October 2026 — cute sign-off, bestie 🫶✨