Date: Sun, 31 Aug 2008 03:38:04 +0900 From: Takanori Watanabe <takawata@init-main.com> To: Miguel Lopes Santos Ramos <miguel@anjos.strangled.net> Cc: freebsd-acpi@freebsd.org Subject: Re: Suspend/Resume on AMD64 Message-ID: <200808301838.m7UIc4hE018292@sana.init-main.com> In-Reply-To: Your message of "Sat, 30 Aug 2008 18:51:53 %2B0100." <200808301751.m7UHprcc023311@satan.anjos.strangled.net>
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In message <200808301751.m7UHprcc023311@satan.anjos.strangled.net>, Miguel Lope s Santos Ramos wrote: > >Hi, > >I'm running amd64 on my laptop since early 2005. >Had a bunch of problems, ehci, radeon, etc, but most were fixed by someone sin >ce then. >One thing I still miss though is ACPI suspend/resume. >Browsing through dev/acpica I found out that this feature set is simply disabl >ed outside i386 >(several #ifndef __i386__) and figured that maybe that's just because no one a >ppeared to test it. The code is in i386/acpica/acpi_wakeup.c, i386/acpica/acpi_wakecode.S >Well, I hereby volunteer to test this. >I have already removed the ifndefs and achieved a machine hang when tried to s >uspend. > >I have some experience with 80386 initialization (almost obsolete), >I am a capable programmer (able to keep the indentation of an existing source >file), >and may be able to develop some new code if someone points me to the right >documents at Intel or AMD. >I am partially available on weekends. > >Will someone involved with suspend/resume on i386 help me on this? You called me? :-) >Would it be necessary to move to -CURRENT? >Where should I start? Copy the code to amd64/acpica/ then try to run as it is. In amd64, you have to preserve many registers than i386, so the code should be more ABI aware. http://2008.asiabsdcon.org/papers/P9A-paper.pdf To debug lowest part of resume code, you may want to use BEEP debug. I wrote incomplete SMP suspend/resume code 3 months ago. http://lists.freebsd.org/pipermail/freebsd-acpi/2008-May/004879.html Indeed, I reserve 10GB partition to my primary laptop to develop amd64 suspend/resume.But I don't even install it yet. So if you implement it, I'm willing to test it :-P.
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