[U-Boot-Users] [patch] rtl8139.c: use PCI IO map

Lucas Jin
2007-10-13T15:16:30Z

Wolfgang Denk Wrote:

>In message <200710131722183904740@gmail.com> you wrote:
>>
>> Signed-off-by: Lucas Jin <lucasjin@gmail.com>
>>
>> --- ./drivers/rtl8139.c.orig 2007-10-12 22:17:52.000000000 +0800
>> +++ ./drivers/rtl8139.c 2007-10-13 17:34:40.117515408 +0800
>
>Could you please explain which problem this patch is supposed to fix?

The rtl8139 specification says the configuration registers can be accessed through PCI memory mapping or PCI IO mapping.

The u-boot driver uses PCI memory mapping, but it doesn't work, so I changed it to PCI IO mapping.

The driver of rtl8139 in Linux Kernel also uses PCI IO mapping to access the configuration registers.

>
>Best regards,
>
>Wolfgang Denk
>
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Thanks
Lucas Jin