From: jgunthorpe@obsidianresearch.com (Jason Gunthorpe)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] fpga zynq: Check the bitstream for validity
Date: Wed, 9 Nov 2016 09:00:03 -0700 [thread overview]
Message-ID: <20161109160003.GB15076@obsidianresearch.com> (raw)
In-Reply-To: <ab7684fe-2407-330e-9001-21dccc781983@suse.com>
On Wed, Nov 09, 2016 at 04:18:29PM +0100, Matthias Brugger wrote:
> I get your point. Especially looping to the whole file to find the sync
> header can take a while, especially if the file is big and the sync header
> is not present.
Er, no not at all. If you send garbage to the FPGA the driver detects
it after a 2.5s timeout. The memory scan is always alot faster.
In the normal success case it is ~5 compares.
> So I think the whole idea behind this patch is to provide feedback to the
> user about what went wrong when trying to update the FPGA. Is there a way to
> get this information from the hardware which discards the update?
No, not with such specificity.
Jason
next prev parent reply other threads:[~2016-11-09 16:00 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-26 22:54 [PATCH] fpga zynq: Check the bitstream for validity Jason Gunthorpe
2016-10-27 7:42 ` Michal Simek
2016-10-27 14:32 ` Jason Gunthorpe
2016-10-27 8:50 ` Matthias Brugger
2016-10-27 14:39 ` Jason Gunthorpe
2016-10-28 11:06 ` Matthias Brugger
2016-10-28 15:47 ` Jason Gunthorpe
2016-10-28 16:36 ` Matthias Brugger
2016-10-28 16:55 ` Jason Gunthorpe
2016-10-28 18:23 ` Moritz Fischer
2016-10-28 20:26 ` Jason Gunthorpe
2016-10-28 21:00 ` Moritz Fischer
2016-10-28 22:05 ` Jason Gunthorpe
2016-10-29 0:09 ` Moritz Fischer
2016-10-31 16:23 ` Jason Gunthorpe
2016-11-01 6:39 ` Michal Simek
2016-11-01 15:33 ` Jason Gunthorpe
2016-11-01 17:48 ` Michal Simek
2016-11-08 0:05 ` Jason Gunthorpe
2016-11-09 14:21 ` Mike Looijmans
2016-11-09 15:18 ` Matthias Brugger
2016-11-09 16:00 ` Jason Gunthorpe [this message]
2016-11-09 15:56 ` Jason Gunthorpe
2016-11-09 17:31 ` Mike Looijmans
2016-11-28 18:00 ` Jason Gunthorpe
2016-11-08 0:46 ` Jason Gunthorpe
2016-11-08 9:59 ` Matthias Brugger
2016-11-08 16:24 ` Jason Gunthorpe
2016-10-28 11:12 ` Matthias Brugger
2016-10-28 15:48 ` Jason Gunthorpe
2016-10-28 16:37 ` Matthias Brugger
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