Messages in this thread |  | | Subject | Re: [2.5.63 PATCH][TRIVIAL]Change rtc.c ioport extend from 10h to 8h | From | Rusty Lynch <> | Date | 26 Feb 2003 11:42:30 -0800 |
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On Wed, 2003-02-26 at 11:35, Richard B. Johnson wrote: > On 26 Feb 2003, Rusty Lynch wrote: > > > The real time clock only needs 8 bytes, but rtc.c is reserving 10h bytes. > [SNIPPED...] > > It only needs two bytes port 0x70 and port 0x71 in ix86. Since the Sparc > gets addressed differently and can only read/write words, it needs 8 > bytes. Please, if you are going to fix it, please fix it only once by > setting a different length for the different machines! > Cheers, > Dick Johnson
Actually, it's finer grain then x86, it's a chipset issue. As Randy pointed out in the original thread ==> > Some Intel chipset specs list RTC as using 0x70 - 0x77, probably with > some aliasing in there, so it looks to me like an EXTENT of 8 would be > safer and still allow you access to 0x79. > > I'm looking at 82801BA-ICH2, 82801-ICH3, and 82801AA-ICH0 specs. > > -- > ~Randy >
Any suggestions on the right way of doing this?
--rustyl
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