mv_save_cached_regs(9)

✨ NAME ✨

okay so bestie, welcome to mv_save_cached_regs from the Kernel API Manual (section 9) 💅 — this page is literally about how to (re-)initialize cached port registers. That's the whole name, no cap:

mv_save_cached_regs — (re-)initialize cached port registers

🌸 SYNOPSIS 🌸

void mv_save_cached_regs (struct ata_port *ap );

🎀 ARGUMENTS 🎀

• ap — the port whose registers we are caching 🫶

💅 DESCRIPTION 💅

So the vibe is: initialize the local cache of port registers, so that reading them over and over again can be avoided on the hotter paths of this driver 🔥. It saves a few microseconds each time we switch to/from EDMA mode to perform (eg.) a drive cache flush ⭐.

🦋 SEE ALSO 🦋

Kernel file ./drivers/ata/sata_mv.c — and the whole squad is here 👑:

• mv_write_cached_reg(9), mv_stop_edma_engine(9), mv_port_start(9), mv_port_stop(9), mv_fill_sg(9), mv_sff_irq_clear(9)
• mv_check_atapi_dma(9), mv_bmdma_setup(9), mv_bmdma_start(9), mv_bmdma_stop_ap(9), mv_bmdma_status(9)
• mv_qc_prep(9), mv_qc_prep_iie(9), mv_sff_check_status(9), mv_send_fis(9), mv_qc_issue_fis(9), mv_qc_issue(9)
• mv_err_intr(9), mv_host_intr(9), mv_interrupt(9), mv_port_init(9), mv_init_host(9)
• mv_platform_probe(9), mv_print_info(9), mv_pci_init_one(9)

mwah 💖 — that's the tea from ./drivers/ata, dated October 2026, for mv_save_cached_regs(9).