From: Denis Oliver Kropp <dok@directfb.org>
To: kaka <share.kt@gmail.com>
Cc: linux-mips@linux-mips.org, uclinux-dev@uclinux.org,
celinux-dev@tree.celinuxforum.org,
linux-fbdev-users@lists.sourceforge.net,
directfb-users@directfb.org, directfb-dev@directfb.org
Subject: Re: [directfb-dev] Usage of mmap command
Date: Tue, 20 Nov 2007 09:29:35 +0100 [thread overview]
Message-ID: <47429AEF.3010403@directfb.org> (raw)
In-Reply-To: <eea8a9c90711192239q6009cbb8y76790fa73bc4a5b7@mail.gmail.com>
kaka wrote:
> Hi All,
>
> void *mmap(void *start, size_t length, int prot, int flags, int
> fd, off_t offset);
>
> I am providing 16,00,000 as length parameter in mmap command.
> It is giving me error as Can't mmap region. on the other hand when i am
> providing 9,00,000 as length parameter in mmap command.
> It is successful.
> This mmap command is being issued from User space.
>
> On the other hand in the framebuffer driver in the kernel spce i have
> specified the length of mmio in the ioremap as 16,00,000.
The ioremap() is independent of the values propagated to user space
and fbmem.c via fix.mmio_start and fix.mmio_len, please check these.
--
Best regards,
Denis Oliver Kropp
.------------------------------------------.
| DirectFB - Hardware accelerated graphics |
| http://www.directfb.org/ |
"------------------------------------------"
next prev parent reply other threads:[~2007-11-20 8:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-20 6:39 Usage of mmap command kaka
2007-11-20 8:29 ` Denis Oliver Kropp [this message]
2007-11-20 9:40 ` kaka
2007-11-20 10:42 ` Denis Oliver Kropp
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