sis_set_fifo(9)

💅 sis_set_fifo(9) 💅

hey bestie, welcome to sis_set_fifo(9) from the Kernel API Manual! she’s here to set the RWP fifo bits for this device, and honestly? important. 💖

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🌸 NAME 🌸

sis_set_fifo — sets the RWP fifo bits for this device, periodt. ✨

✨ SYNOPSIS ✨

the signature is literally:

void sis_set_fifo (struct ata_port *ap , struct ata_device *adev );

🎀 ARGUMENTS 🎀

• ap — the Port, bestie. 💅
• adev — the Device, no cap. 🫶

🦋 DESCRIPTION 🦋

okay so here’s the tea: SIS chipsets implement prefetch/postwrite bits for each device on both channels. 👑

this functionality is not ATAPI compatible, and it must be configured according to the class of device present. that’s not a vibe you can skip, okay? 😭

🚨 caveat check: not ATAPI compatible — configure it according to the class of device present. fr fr.

🌈 SEE ALSO 🌈

go peek at the Kernel file ./drivers/ata/pata_sis.c and these iconic friends:

• sis_old_port_base(9)
• sis_port_base(9)
• sis_133_cable_detect(9)
• sis_66_cable_detect(9)
• sis_pre_reset(9)
• sis_old_set_piomode(9)
• sis_100_set_piomode(9)
• sis_133_set_piomode(9)
• sis_old_set_dmamode(9)
• sis_66_set_dmamode(9)
• sis_100_set_dmamode(9)
• sis_133_early_set_dmamode(9)
• sis_133_set_dmamode(9)
• sis_133_mode_filter(9)
• sis_init_one(9)

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xoxo bestie 💖 — source/version: ./drivers/ata, date: October 2026 ✨