From: "Michael Brown" <mcb30@ipxe.org>
To: devel@edk2.groups.io, harlydavidsen@gmail.com
Subject: Re: [edk2-devel] EFI_AUDIO_OUTPUT_PROTOCOL: assistance with VirtIO initialization
Date: Tue, 6 Jul 2021 13:53:44 +0100 [thread overview]
Message-ID: <80a7f1ae-7e2a-4e26-3a3e-90157af91bdb@ipxe.org> (raw)
In-Reply-To: <CAJQtwF0odTO+KB7wr6Jo6bvirjiCGr9rJgLU7ucHAyAsE6ZOPQ@mail.gmail.com>
On 02/07/2021 19:22, Ethin Probst wrote:
> Update: I just realized I'd made a typo -- the unknown request is
> actually a get_min request.
>
> On 7/2/21, Ethin Probst <harlydavidsen@gmail.com> wrote:
>> Setup Data
>> bmRequestType: 0xa1
>> 1... .... = Direction: Device-to-host
>> .01. .... = Type: Class (0x1)
>> ...0 0001 = Recipient: Interface (0x01)
>> bRequest: 130
>> wValue: 0x0201
>> wIndex: 1536 (0x0600)
>> wLength: 2
That doesn't immediately make sense to me in the context of reading
sections 5.2.1.2 and 5.2.2.2.2 of the audio spec, but feel free to post
the whole wireshark capture (off-list!) and I can take a look.
Michael
next prev parent reply other threads:[~2021-07-06 12:53 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-30 23:01 EFI_AUDIO_OUTPUT_PROTOCOL: assistance with VirtIO initialization Ethin Probst
2021-07-01 14:15 ` [edk2-devel] " Michael Brown
2021-07-01 18:10 ` Ethin Probst
2021-07-02 8:59 ` Laszlo Ersek
2021-07-02 9:41 ` Michael Brown
[not found] ` <168DEFFB0E406B59.30759@groups.io>
2021-07-02 9:46 ` Michael Brown
2021-07-02 18:18 ` Ethin Probst
2021-07-02 18:22 ` Ethin Probst
2021-07-06 12:53 ` Michael Brown [this message]
2021-07-02 8:54 ` Laszlo Ersek
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