From: "H. Peter Anvin" <hpa@zytor.com>
To: Pavel Machek <pavel@denx.de>
Cc: Alan Tull <atull@altera.com>,
Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
Jason Cooper <jason@lakedaemon.net>,
Michal Simek <michal.simek@xilinx.com>,
linux-kernel@vger.kernel.org, monstr@monstr.eu,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Dinh Nguyen <dinguyen@altera.com>,
Philip Balister <philip@balister.org>,
Alessandro Rubini <rubini@gnudd.com>,
Mauro Carvalho Chehab <m.chehab@samsung.com>,
Andrew Morton <akpm@linux-foundation.org>,
Cesar Eduardo Barros <cesarb@cesarb.net>,
Joe Perches <joe@perches.com>,
"David S. Miller" <davem@davemloft.net>,
Stephen Warren <swarren@nvidia.com>,
Arnd Bergmann <arnd@arndb.de>,
David Brown <davidb@codeaurora.org>,
Dom Cobley <popcornmix@gmail.com>
Subject: Re: [RFC PATCH] fpga: Introduce new fpga subsystem
Date: Tue, 24 Sep 2013 15:54:33 -0700 [thread overview]
Message-ID: <52421829.4050708@zytor.com> (raw)
In-Reply-To: <20130919100833.GC19346@amd.pavel.ucw.cz>
On 09/19/2013 03:08 AM, Pavel Machek wrote:
>
>> The firmware approach is interesting. It might be less flexible
>> compared with my original code (see link to git below) that this is
>
> On the other hand... that's the interface world wants, right? To most
> users, fpga bitstream is just a firmware.
>
No, not really.
The typical assumption with the firmware interface is that there is
exactly one possible firmware for each device (possibly modulated by
driver version, but still.) This is blatantly not true for an FPGA in
the most extreme way possible -- there are an almost infinite number of
ways one can load an FPGA.
However, I have to question the whole idea of an "FPGA subsystem" --
there is an almost infinite number of ways to program an FPGA or FPGA
programming device (which may even be a commodity flash with a
microcontroller or CPLD, and may be shared with other devices), and it
really doesn't make any inherent sense to lump them together.
-hpa
next prev parent reply other threads:[~2013-09-24 22:55 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-18 15:56 [RFC PATCH 0/1] FPGA subsystem core Michal Simek
2013-09-18 15:56 ` [RFC PATCH] fpga: Introduce new fpga subsystem Michal Simek
2013-09-18 16:11 ` Joe Perches
2013-09-19 10:01 ` Michal Simek
2013-09-19 16:26 ` Alan Tull
2013-09-18 19:02 ` Dinh Nguyen
2013-09-19 11:53 ` Michal Simek
2013-09-18 19:15 ` Jason Cooper
2013-09-18 20:32 ` Jason Gunthorpe
2013-09-18 21:17 ` Alan Tull
2013-09-19 10:08 ` Pavel Machek
2013-09-19 11:02 ` Michal Simek
2013-09-20 20:55 ` Alan Tull
2013-09-24 15:55 ` Alan Tull
2013-09-24 15:58 ` Michal Simek
2013-09-24 16:22 ` Alan Tull
2013-09-24 22:18 ` Greg Kroah-Hartman
2013-09-25 13:55 ` Yves Vandervennet
2013-09-25 14:51 ` Michal Simek
2013-09-25 18:50 ` Alan Tull
2013-09-24 22:54 ` H. Peter Anvin [this message]
2013-09-25 10:41 ` Michal Simek
2013-09-25 12:00 ` Pavel Machek
2013-09-25 14:27 ` Philip Balister
2013-09-25 14:43 ` Michal Simek
2013-09-25 19:21 ` Alan Tull
2013-09-19 10:55 ` Michal Simek
2013-09-19 11:17 ` Pavel Machek
2013-09-19 11:22 ` Michal Simek
2013-09-19 12:52 ` /sys rules " Pavel Machek
2013-09-19 14:06 ` Greg KH
2013-09-19 14:10 ` Michal Simek
2013-09-19 14:18 ` Greg KH
2013-09-19 15:14 ` Alan Tull
2013-09-19 14:20 ` Jason Cooper
2013-09-19 14:37 ` Greg KH
2013-09-19 22:48 ` Pavel Machek
[not found] ` <CADuitaA3PLaOgmqXzfMdMDaXg7G6bT-DufjcuhtWfvaoWRj__Q@mail.gmail.com>
2013-09-19 15:14 ` Michal Simek
2013-09-19 15:18 ` Yves Vandervennet
2013-09-19 17:28 ` Jason Gunthorpe
2013-09-23 13:10 ` Michal Simek
2013-09-23 17:10 ` Jason Gunthorpe
2013-09-25 10:48 ` Michal Simek
2013-09-23 13:02 ` Michal Simek
2013-09-19 10:03 ` Pavel Machek
2013-09-19 10:45 ` Michal Simek
2013-09-27 13:31 ` Michal Simek
2013-09-30 17:12 ` Jason Gunthorpe
2013-10-01 15:59 ` Michal Simek
2013-09-18 23:45 ` Ryan Mallon
2013-09-19 11:37 ` Michal Simek
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=52421829.4050708@zytor.com \
--to=hpa@zytor.com \
--cc=akpm@linux-foundation.org \
--cc=arnd@arndb.de \
--cc=atull@altera.com \
--cc=cesarb@cesarb.net \
--cc=davem@davemloft.net \
--cc=davidb@codeaurora.org \
--cc=dinguyen@altera.com \
--cc=gregkh@linuxfoundation.org \
--cc=jason@lakedaemon.net \
--cc=jgunthorpe@obsidianresearch.com \
--cc=joe@perches.com \
--cc=linux-kernel@vger.kernel.org \
--cc=m.chehab@samsung.com \
--cc=michal.simek@xilinx.com \
--cc=monstr@monstr.eu \
--cc=pavel@denx.de \
--cc=philip@balister.org \
--cc=popcornmix@gmail.com \
--cc=rubini@gnudd.com \
--cc=swarren@nvidia.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 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.