Where I can find detailed definition for FIS of AHCI?

[shore]

Hi, again I'm trying to write an AHCI driver by following https://wiki.osdev.org/AHCI.

I've been reading relevant documentations and looking for detailed definition of FIS(Frame Information Structure).

I could find some of the infos. but not the detailed definition, especially for FIS->command.

I've searched for serial-ata-ahci-spec and SATA_3.3_Spec, also googled.

Can anyone help me with this Thanks a lot

[Keith]

Try Chapter 10 (Transport Layer) in the Serial ATA Revision 2.6 document which you can google for.

[pvc]

There is also that book called "The Essential Guide to Serial ATA and SATA Express" by David A. Deming. It has basically the same info as in the spec, but presented in much more condensed and easier to read form. Particular edition I have is from 2015.