From: Clemens Ladisch <clemens@ladisch.de>
To: Jimmie Mayfield <mayfield@sackheads.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Trying to reset a PCIe device and scratching my head...
Date: Tue, 28 Sep 2010 09:28:14 +0200 [thread overview]
Message-ID: <4CA1990E.9080206@ladisch.de> (raw)
In-Reply-To: <20100928020548.GA90230@sackheads.org>
Jimmie Mayfield wrote:
> Having the PCIe interface implemented inside FPGA 'A' makes upgrading
> that particular FPGA rather troublesome. In a perfect world, one would
> be able to upgrade the FPGA without having to reboot the machine. The
> hardware guys have designed the card to reload that FPGA image upon a
> slot reset...either fundamental or hot.
>
> So I'd like to be able to send either a fundamental or hot reset to the
> device but so far I've had no success.
The PCIe AER driver (drivers/pci/pcie/aer/) sends a hot reset when
it has received a fatal error. As far as I can tell, it just sets the
PCI_BRIDGE_CTL_BUS_RESET bit of the upstream bridge; everything else
is just infrastructure to handle error reporting and to notify the
device driver about the reset.
Regards,
Clemens
next prev parent reply other threads:[~2010-09-28 7:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-28 2:05 Trying to reset a PCIe device and scratching my head Jimmie Mayfield
2010-09-28 7:28 ` Clemens Ladisch [this message]
2010-09-28 16:06 ` Jesse Barnes
2010-09-28 19:13 ` Jimmie Mayfield
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=4CA1990E.9080206@ladisch.de \
--to=clemens@ladisch.de \
--cc=linux-kernel@vger.kernel.org \
--cc=mayfield@sackheads.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.