From: "David S. Miller" <davem@redhat.com>
To: alan@lxorguk.ukuu.org.uk
Cc: kraxel@bytesex.org, linux-kernel@vger.kernel.org
Subject: Re: [UPDATE] 2.4.10-pre2 PCI64, API changes README
Date: Thu, 30 Aug 2001 16:31:29 -0700 (PDT) [thread overview]
Message-ID: <20010830.163129.55479282.davem@redhat.com> (raw)
In-Reply-To: <E15cbGc-00027M-00@the-village.bc.nu>
In-Reply-To: <20010830.161453.130817352.davem@redhat.com> <E15cbGc-00027M-00@the-village.bc.nu>
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Date: Fri, 31 Aug 2001 00:30:34 +0100 (BST)
That isnt done anyway - the card executes a risc instruction set for the
DMA engine specifying which to skip and draw. So you feed it a base
physical address for the fb via ioctl (yes this needs to be a pci device
bar and offset I suspect) and then tell it about the fb layout and the like
We could do something interesting with /proc/bus/pci/bus/devfn nodes
I suspect.
You open the target fb pci dev, and part of the argument to the video
ioctl is:
int pci_dev_fd;
int resource_num;
u64 offset;
u64 len;
Something like that.
Later,
David S. Miller
davem@redhat.com
next prev parent reply other threads:[~2001-08-30 23:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-30 1:18 [UPDATE] 2.4.10-pre2 PCI64, API changes README David S. Miller
2001-08-30 12:34 ` Gerd Knorr
2001-08-30 23:06 ` David S. Miller
2001-08-30 23:14 ` Alan Cox
2001-08-30 23:14 ` David S. Miller
2001-08-30 23:30 ` Alan Cox
2001-08-30 23:31 ` David S. Miller [this message]
2001-08-31 7:22 ` Gerd Knorr
2001-08-31 8:58 ` David S. Miller
2001-08-31 14:12 ` Alan Cox
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