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Re: [Qemu-devel] [PATCH] ahci: fix FIS I bit and PIO Setup FIS interrupt


From: John Snow
Subject: Re: [Qemu-devel] [PATCH] ahci: fix FIS I bit and PIO Setup FIS interrupt
Date: Thu, 21 Jun 2018 16:06:06 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0


On 06/20/2018 09:25 AM, Paolo Bonzini wrote:
> +    pio_fis_i = is_atapi ? ad->done_atapi_packet : !is_write;

Per DPIOO1, does this go to false for the first DRQ block, or did I
misunderstand? Currently my understanding:

- device->host
        DPIOI1
        Interrupt bit shall be set.
- host->device:
        DPIOO1:
        0 for first block, 1 otherwise
- ATAPI:
        0 for packet itself
        1 for all data otherwise.

Yes?





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