From: Mike Mason <mmlnx@us.ibm.com>
To: linuxppc-dev@ozlabs.org, linux-pci@vger.kernel.org,
linasvepstas@gmail.com, benh@kernel.crashing.org,
Paul Mackerras <paulus@samba.org>
Cc: Richard Lary <rlary@us.ibm.com>
Subject: [PATCH 1/3] Support for PCI Express reset type
Date: Thu, 30 Jul 2009 15:33:21 -0700 [thread overview]
Message-ID: <4A721FB1.4040903@us.ibm.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 859 bytes --]
This is the first of three patches that implement a bit field that PCI Express device drivers can use to indicate they need a fundamental reset during error recovery.
By default, the EEH framework on powerpc does what's known as a "hot reset" during recovery of a PCI Express device. We've found a case where the device needs a "fundamental reset" to recover properly. The current PCI error recovery and EEH frameworks do not support this distinction.
The attached patch (courtesy of Richard Lary) adds a bit field to pci_dev that indicates whether the device requires a fundamental reset during recovery.
These patches supersede the previously submitted patch that implemented a fundamental reset bit field.
Please review and let me know of any concerns.
Signed-off-by: Mike Mason <mmlnx@us.ibm.com>
Signed-off-by: Richard Lary <rlary@us.ibm.com>
[-- Attachment #2: pci_fundamental_reset.patch --]
[-- Type: text/plain, Size: 490 bytes --]
diff -uNrp a/include/linux/pci.h b/include/linux/pci.h
--- a/include/linux/pci.h 2009-07-13 14:25:37.000000000 -0700
+++ b/include/linux/pci.h 2009-07-15 10:25:37.000000000 -0700
@@ -273,6 +273,7 @@ struct pci_dev {
unsigned int ari_enabled:1; /* ARI forwarding */
unsigned int is_managed:1;
unsigned int is_pcie:1;
+ unsigned int needs_freset:1; /* Dev requires fundamental reset */
unsigned int state_saved:1;
unsigned int is_physfn:1;
unsigned int is_virtfn:1;
next reply other threads:[~2009-07-30 22:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-30 22:33 Mike Mason [this message]
2009-07-31 16:19 ` [PATCH 1/3] Support for PCI Express reset type Andi Kleen
2009-07-31 16:47 ` Andrew Vasquez
2009-08-01 22:40 ` Linas Vepstas
2009-08-01 22:43 ` Linas Vepstas
2009-08-14 16:54 ` Jesse Barnes
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=4A721FB1.4040903@us.ibm.com \
--to=mmlnx@us.ibm.com \
--cc=benh@kernel.crashing.org \
--cc=linasvepstas@gmail.com \
--cc=linux-pci@vger.kernel.org \
--cc=linuxppc-dev@ozlabs.org \
--cc=paulus@samba.org \
--cc=rlary@us.ibm.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).