From: Andy Lutomirski <luto@amacapital.net>
To: David Herrmann <dh.herrmann@gmail.com>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Dave Airlie <airlied@gmail.com>,
linux-fbdev@vger.kernel.org, Stephen Warren <swarren@nvidia.com>,
Olof Johansson <olof@lixom.net>
Subject: Re: [RFC 3/6] drm: add SimpleDRM driver
Date: Tue, 25 Jun 2013 01:05:11 +0000 [thread overview]
Message-ID: <51C8ECC7.4030404@mit.edu> (raw)
In-Reply-To: <1372112849-670-4-git-send-email-dh.herrmann@gmail.com>
On 06/24/2013 03:27 PM, David Herrmann wrote:
> + sdrm->fb_map = ioremap(sdrm->fb_base, sdrm->fb_size);
This should probably be ioremap_wc. Otherwise it will be *really* slow
if used in legacy mode and it may cause conflicts with the
pgprot_writecombine mode for mmap.
(Watching boot messages go by on fbcon on efifb was like using an old
2400 baud modem before I made the corresponding change to efifb.)
--Andy
WARNING: multiple messages have this Message-ID (diff)
From: Andy Lutomirski <luto@amacapital.net>
To: David Herrmann <dh.herrmann@gmail.com>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Dave Airlie <airlied@gmail.com>,
linux-fbdev@vger.kernel.org, Stephen Warren <swarren@nvidia.com>,
Olof Johansson <olof@lixom.net>
Subject: Re: [RFC 3/6] drm: add SimpleDRM driver
Date: Mon, 24 Jun 2013 18:05:11 -0700 [thread overview]
Message-ID: <51C8ECC7.4030404@mit.edu> (raw)
In-Reply-To: <1372112849-670-4-git-send-email-dh.herrmann@gmail.com>
On 06/24/2013 03:27 PM, David Herrmann wrote:
> + sdrm->fb_map = ioremap(sdrm->fb_base, sdrm->fb_size);
This should probably be ioremap_wc. Otherwise it will be *really* slow
if used in legacy mode and it may cause conflicts with the
pgprot_writecombine mode for mmap.
(Watching boot messages go by on fbcon on efifb was like using an old
2400 baud modem before I made the corresponding change to efifb.)
--Andy
next prev parent reply other threads:[~2013-06-25 1:05 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-24 22:27 [RFC 0/6] SimpleDRM Driver (was: dvbe driver) David Herrmann
2013-06-24 22:27 ` David Herrmann
2013-06-24 22:27 ` [RFC 1/6] fbdev: simplefb: add init through platform_data David Herrmann
2013-06-24 22:27 ` David Herrmann
2013-06-26 20:39 ` Stephen Warren
2013-06-26 20:39 ` Stephen Warren
2013-06-28 10:03 ` David Herrmann
2013-06-28 10:03 ` David Herrmann
2013-06-24 22:27 ` [RFC 2/6] x86: provide platform-devices for boot-framebuffers David Herrmann
2013-06-24 22:27 ` David Herrmann
2013-06-26 20:49 ` Stephen Warren
2013-06-26 20:49 ` Stephen Warren
2013-06-28 10:11 ` David Herrmann
2013-06-28 10:11 ` David Herrmann
2013-07-01 15:48 ` Stephen Warren
2013-07-01 15:48 ` Stephen Warren
2013-06-24 22:27 ` [RFC 3/6] drm: add SimpleDRM driver David Herrmann
2013-06-24 22:27 ` David Herrmann
2013-06-25 1:05 ` Andy Lutomirski [this message]
2013-06-25 1:05 ` Andy Lutomirski
2013-06-28 9:59 ` David Herrmann
2013-06-28 9:59 ` David Herrmann
2013-06-26 20:58 ` Stephen Warren
2013-06-26 20:58 ` Stephen Warren
2013-06-28 10:01 ` David Herrmann
2013-06-28 10:01 ` David Herrmann
2013-06-24 22:27 ` [RFC 4/6] drm: simpledrm: add fbdev fallback support David Herrmann
2013-06-24 22:27 ` David Herrmann
2013-06-26 20:59 ` Stephen Warren
2013-06-26 20:59 ` Stephen Warren
2013-06-28 10:14 ` David Herrmann
2013-06-28 10:14 ` David Herrmann
2013-06-24 22:27 ` [RFC 5/6] drm: add helpers to kick out firmware drivers David Herrmann
2013-06-24 22:27 ` David Herrmann
2013-06-24 22:27 ` [RFC 6/6] drm: nouveau: kick out firmware drivers during probe David Herrmann
2013-06-24 22:27 ` David Herrmann
2013-06-26 21:30 ` [RFC 0/6] SimpleDRM Driver (was: dvbe driver) Stephen Warren
2013-06-26 21:30 ` Stephen Warren
2013-06-28 10:43 ` David Herrmann
2013-06-28 10:43 ` David Herrmann
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