Re: Update: RE: G4 + Linux + PCI device + x86 driver = 0

On Sat, 4 Dec 1999, Michel Lanners wrote:

quoted

3.  I had to byte-swap all data that I supply to my device, except the data
that is handled as a byte stream.  This involved major discussions with my
colleagues, because of the need to consider Big Endian, Little Endian, and
Network Byte Order.

David pointed out le16_to_cpu() et al; personally, I use in_/out_le32
et al for access to PCI memory space like this:

out_le32 (&device->register, val);

Which is wrong! Portable PCI memory space accesses must be done using
{read,write}[bwl]()!

See linux/Documentation/IO-mapping.txt 

Gr{oetje,eeting}s,
--
Geert Uytterhoeven -- Linux/{m68k~Amiga,PPC~CHRP} -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds


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