ata_sff_irq_status(9)

💅 ata_sff_irq_status(9) 💅

okay bestie, this page is literally from the Kernel API Manual, and it’s all about one tiny but iconic helper: ata_sff_irq_status(9). It’s giving “check if the device is busy” energy, and we’re gonna read it together like a group chat. 🫶

✨ NAME ✨

ata_sff_irq_status — Check if the device is busy 💅

✨ SYNOPSIS ✨

u8 ata_sff_irq_status (struct ata_port *ap );

🎀 ARGUMENTS 🎀

• ap — the port where the device is, periodt. That’s the whole argument, no extra lore. 🎀

🦋 DESCRIPTION 🦋

So this function determines if the port is currently busy. It uses altstatus if available in order to avoid clearing shared IRQ status when finding an IRQ source — lowkey smart. And non ctl capable devices don’t share interrupt lines, fortunately for us 🫶.

LOCKING: Inherited from caller. No cap, you don’t set up the lock here; you just inherit it from whoever called you. 💅

🌸 SEE ALSO 🌸

Kernel file ./drivers/ata/libata-sff.c — and the whole squad is: ata_sff_check_status(9), ata_sff_altstatus(9), ata_sff_sync(9), ata_sff_pause(9), ata_sff_dma_pause(9), ata_sff_wait_ready(9), ata_sff_set_devctl(9), ata_sff_dev_select(9), ata_dev_select(9), ata_sff_irq_on(9), ata_sff_tf_load(9), ata_sff_tf_read(9), ata_sff_exec_command(9), ata_tf_to_host(9), ata_sff_data_xfer(9), ata_sff_data_xfer32(9), ata_pio_sector(9), ata_pio_sectors(9), atapi_send_cdb(9), __atapi_pio_bytes(9), atapi_pio_bytes(9), ata_hsm_ok_in_wq(9), ata_hsm_qc_complete(9), ata_sff_hsm_move(9), ata_sff_qc_issue(9), ata_sff_qc_fill_rtf(9), ata_sff_port_intr(9), ata_sff_interrupt(9), ata_sff_lost_interrupt(9), ata_sff_freeze(9), ata_sff_thaw(9), ata_sff_prereset(9), ata_devchk(9), ata_sff_dev_classify(9), ata_sff_wait_after_reset(9), ata_sff_softreset(9), sata_sff_hardreset(9), ata_sff_postreset(9), ata_sff_drain_fifo(9), ata_sff_error_handler(9), ata_sff_std_ports(9), ata_pci_sff_init_host(9), ata_pci_sff_prepare_host(9), ata_pci_sff_activate_host(9), ata_pci_sff_init_one(9), ata_bmdma_fill_sg(9), ata_bmdma_fill_sg_dumb(9), ata_bmdma_qc_prep(9), ata_bmdma_dumb_qc_prep(9), ata_bmdma_qc_issue(9), ata_bmdma_port_intr(9), ata_bmdma_interrupt(9), ata_bmdma_error_handler(9), ata_bmdma_post_internal_cmd(9), ata_bmdma_irq_clear(9), ata_bmdma_setup(9), ata_bmdma_start(9), ata_bmdma_stop(9), ata_bmdma_status(9), ata_bmdma_port_start(9), ata_bmdma_port_start32(9), ata_pci_bmdma_clear_simplex(9), ata_pci_bmdma_init(9), ata_pci_bmdma_prepare_host(9), ata_pci_bmdma_init_one(9), ata_sff_port_init(9).

okay that’s the whole page, bestie. Source/version: ./drivers/ata; date: October 2026; and yes, we did the ata_sff_irq_status(9) page from the Kernel API Manual proud. 💖✨