Messages in this thread | | | Subject | RE: Fwd: hpet patches | Date | Wed, 15 Jun 2005 10:15:59 -0700 | From | "Pallipadi, Venkatesh" <> |
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>-----Original Message----- >From: Jon Smirl [mailto:jonsmirl@gmail.com] >Sent: Tuesday, June 14, 2005 4:37 PM >To: Pallipadi, Venkatesh >Cc: Bob Picco; Andrew Morton; lkml >Subject: Re: Fwd: hpet patches > >On 6/14/05, Pallipadi, Venkatesh <venkatesh.pallipadi@intel.com> wrote: >> HPET device itself can be there. But, it can appear in different >> addresses. Most commonly used address is 0xfed00000. But, it can be >> different as well. > >Does Intel build different versions of something like an 82801EB with >the HPET at different addresses and still have the same part number? >For a specific part number/PCI ID isn't HPET always in the same place? >If the HPET is going to be in a different place I would expected the >chip would have a different PCI ID. >
The specification for ICH5 has the details about this address http://www.intel.com/design/chipsets/datashts/25251601.pdf (Chapter 17). We need to look at specific device address to figure out the HPET base address in this case.
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