From: Jan-Benedict Glaw <jbglaw@lug-owl.de>
To: "Richard B. Johnson" <linux-os@analogic.com>
Cc: Linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: Screen regen buffer at 0x00b8000
Date: Fri, 20 May 2005 16:14:35 +0200 [thread overview]
Message-ID: <20050520141434.GZ2417@lug-owl.de> (raw)
In-Reply-To: <Pine.LNX.4.61.0505200944060.5921@chaos.analogic.com>
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On Fri, 2005-05-20 09:48:35 -0400, Richard B. Johnson <linux-os@analogic.com> wrote:
> len = getpagesize();
> if((fd = open("/dev/mem", O_RDWR)) == FAIL)
> ERRORS("open");
> if((sp = mmap((void *)SCREEN, len, PROT, TYPE, fd, SCREEN))==MAP_FAILED)
> ERRORS("mmap");
Maybe you'd better not fiddle with physical memory, but use the device
abstraction that's ment to offer that interface? That is, use a
framebuffer driver and open /dev/fb* .
MfG, JBG
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next prev parent reply other threads:[~2005-05-20 14:14 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-20 13:48 Screen regen buffer at 0x00b8000 Richard B. Johnson
2005-05-20 14:14 ` Jan-Benedict Glaw [this message]
2005-05-20 14:43 ` Marco Rogantini
2005-05-20 15:24 ` Richard B. Johnson
2005-05-20 16:34 ` Marco Rogantini
2005-05-20 15:31 ` Richard B. Johnson
2005-05-20 19:26 ` Geert Uytterhoeven
2005-05-20 19:45 ` Valdis.Kletnieks
2005-05-20 19:59 ` Richard B. Johnson
2005-05-20 20:03 ` Linus Torvalds
2005-05-20 20:17 ` Richard B. Johnson
2005-05-20 21:21 ` Jon Smirl
2005-05-20 21:27 ` Richard B. Johnson
2005-05-20 23:39 ` James Simmons
2005-05-23 18:28 ` Gábor Lénárt
2005-05-23 18:56 ` Richard B. Johnson
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