On 30.06.14 21:14, John Snow wrote:
I am in the process of writing a series of AHCI tests (for q35) that
compare the written specifications against what the current device
emulation actually does, and I was curious about this bit instead of
ahci.c, in ahci_reset_port:
ide_state->error = 1;
What does this error signify, exactly, and why is it set by default on
ports with a device attached? It trickles up inside of the PxTFD.ERR
byte in the HBA as well as showing up in the initial Register D2H FIS
after the PxCMD.FRE bit is set.
I honestly don't remember :). We do unset the error bit once we get the
first working command though.
Alex
