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Michel Dänzer wrote:
> On Wed, 2007-10-03 at 14:08 -0700, Ian Romanick wrote:
>> diff --git a/linux-core/xgi_cmdlist.c b/linux-core/xgi_cmdlist.c
>> index 261f4e1..35f7e1b 100644
>> --- a/linux-core/xgi_cmdlist.c
>> +++ b/linux-core/xgi_cmdlist.c
>> @@ -45,7 +45,7 @@ static inline void dwWriteReg(struct drm
>> DRM_INFO("mmio_map->handle = 0x%p, addr = 0x%x, data = 0x%x\n",
>> map->handle, addr, data);
>> #endif
>> - DRM_WRITE32(map, addr, data);
>> + DRM_WRITE32(map, addr, cpu_to_le32(data));
>
> These look odd - DRM_READ/WRITE* already swap bytes. Does the device's
> MMIO aperture swap bytes on its own? If so, and you can't or don't want
> to disable that, maybe we need new macros using __raw_read/write* on
> Linux.
Hmm...I didn't realize that those functions had a built-in byte-swap.
I'm having some issues getting XP10 working properly on PPC, and a
liberal sprinkling of cpu_to_le32 and le32_to_cpu made things "better."
I'll continue investigating.
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