From: John Snow <jsnow@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org
Cc: stefanha@redhat.com, mst@redhat.com
Subject: Re: [Qemu-devel] [RFC 03/10] AHCI: Add PRD interrupt
Date: Mon, 15 Sep 2014 12:31:42 -0400 [thread overview]
Message-ID: <5417146E.5090603@redhat.com> (raw)
In-Reply-To: <54149FF3.2080301@redhat.com>
On 09/13/2014 03:50 PM, Paolo Bonzini wrote:
> Il 13/09/2014 15:26, Paolo Bonzini ha scritto:
>>>>
>>>> + if (ad->dp_intr_req) {
>>>> + ahci_trigger_irq(ad->hba, ad, PORT_IRQ_SG_DONE);
>>>> + ad->dp_intr_req = 0;
>>>> + }
>> Is it also needed in the error case? Especially the short-PRDT case
>> that you are adding in the next patch.
>>
>
> ... and is it also needed for NCQ, albeit with a separate flag?
>
> Paolo
>
I had actually thought that it wasn't; due to the more asynchronous
nature of NCQ. But... looking back at the specification, I can't find
anywhere that explicitly says you can't use these bits for NCQ.
next prev parent reply other threads:[~2014-09-15 16:32 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-13 4:34 [Qemu-devel] [RFC 00/10] AHCI Device improvements John Snow
2014-09-13 4:34 ` [Qemu-devel] [RFC 01/10] ide: add is_write() macro for semantic consistency John Snow
2014-09-13 12:54 ` Paolo Bonzini
2014-09-13 17:01 ` John Snow
2014-09-13 4:34 ` [Qemu-devel] [RFC 02/10] AHCI: Update byte count after DMA completion John Snow
2014-09-13 13:21 ` Paolo Bonzini
2014-09-15 20:07 ` John Snow
2014-09-16 7:54 ` Paolo Bonzini
2014-09-13 4:34 ` [Qemu-devel] [RFC 03/10] AHCI: Add PRD interrupt John Snow
2014-09-13 13:26 ` Paolo Bonzini
2014-09-13 19:50 ` Paolo Bonzini
2014-09-15 16:31 ` John Snow [this message]
2014-09-16 7:44 ` Paolo Bonzini
2014-09-15 16:13 ` John Snow
2014-09-13 4:34 ` [Qemu-devel] [RFC 04/10] ide: Correct handling of malformed/short PRDTs John Snow
2014-09-13 13:23 ` Paolo Bonzini
2014-09-13 4:34 ` [Qemu-devel] [RFC 05/10] AHCI: Rename NCQFIS structure fields John Snow
2014-09-13 4:34 ` [Qemu-devel] [RFC 06/10] AHCI: Fix FIS decomposition John Snow
2014-09-13 4:34 ` [Qemu-devel] [RFC 07/10] ide/ahci: Reorder error cases in handle_cmd John Snow
2014-09-13 13:27 ` Paolo Bonzini
2014-09-13 4:34 ` [Qemu-devel] [RFC 08/10] ahci: Check cmd_fis[1] more explicitly John Snow
2014-09-13 13:26 ` Paolo Bonzini
2014-09-13 4:34 ` [Qemu-devel] [RFC 09/10] ahci: factor out FIS decomposition John Snow
2014-09-13 13:27 ` Paolo Bonzini
2014-09-13 4:34 ` [Qemu-devel] [RFC 10/10] AHCI: Fix SDB FIS Construction John Snow
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5417146E.5090603@redhat.com \
--to=jsnow@redhat.com \
--cc=mst@redhat.com \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=stefanha@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).