From: Jurij Smakov <jurij@lokmail.net>
To: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] 720 - some progress
Date: Thu, 27 Sep 2001 12:32:51 -0400 [thread overview]
Message-ID: <200109271632.MAA25337@mail.lokmail.net> (raw)
> A quick glance at arch/parisc/hardware/inventory.c reveiled the
> following:
>
> long status;
> unsigned int bus_id;
> ...
> status = pdc_model_info(&model);
> bus_id = (model.hversion >> (4 + 7)) & 0x1f;
>
> switch (bus_id) {
> case 0x4: /* 720, 730, 750, 735, 755 */
>
> I don't know if all these models have the same CPU. I'm guessing not.
>
> I also see a parisc_get_cpu_type(...) in arch/parisc/kernnel/hardware.c.
> This is probably what you want.
>
> Regards,
>
> Albert
Hi Albert!
As Matthew pointed out, it is not neccessary to determine the CPU type.
"Normal" (newer) CPU's do not consider reading from cr26 and cr27 to
be privileged operations, so the condition, which is checked in the
patch will just never occur for them. Actually, did you try it? I'm
very interested in the results.
Cheers,
Jurij.
next reply other threads:[~2001-09-27 16:32 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-27 16:32 Jurij Smakov [this message]
2001-09-27 19:18 ` [parisc-linux] 720 - some progress Albert Strasheim
-- strict thread matches above, loose matches on Subject: below --
2001-10-01 16:06 Michael S. Zick
2001-09-30 7:12 John Marvin
[not found] <200109280925.FAA18777@mail.lokmail.net>
2001-09-28 16:24 ` Albert Strasheim
2001-09-28 18:48 ` Jochen Friedrich
2001-09-29 17:48 ` Carlos O'Donell Jr.
2001-09-27 14:42 Jurij Smakov
2001-09-28 8:49 ` Jochen Friedrich
2001-09-28 9:19 ` Matthew Wilcox
2001-09-28 8:54 ` Matthew Wilcox
2001-09-29 6:00 ` Albert Strasheim
2001-09-29 8:30 ` Albert Strasheim
2001-09-29 10:01 ` Albert Strasheim
2001-09-29 11:17 ` Jochen Friedrich
2001-09-29 11:45 ` Albert Strasheim
2001-09-29 13:23 ` Jochen Friedrich
2001-09-29 18:36 ` Michael S.Zick
2001-09-29 22:19 ` Michael S.Zick
2001-09-27 12:23 Jurij Smakov
2001-09-27 13:04 ` Albert Strasheim
2001-09-27 13:45 ` Matthew Wilcox
2001-09-27 10:03 Jurij Smakov
2001-09-27 11:15 ` Jochen Friedrich
2001-09-27 9:09 Jurij Smakov
2001-09-27 11:11 ` Jochen Friedrich
2001-09-26 22:26 Jochen Friedrich
2001-09-27 0:07 ` Albert Strasheim
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