Date: Thu, 28 Aug 2003 22:16:30 -0700 (PDT) From: Nate Lawson <njl@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 37154 for review Message-ID: <200308290516.h7T5GUps087028@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=37154 Change 37154 by njl@njl_laptop on 2003/08/28 22:16:21 Add my 6.0 wishlist for ACPI and newbus Affected files ... .. //depot/doc/6.0-TODO#4 edit Differences ... ==== //depot/doc/6.0-TODO#4 (text+ko) ==== @@ -74,5 +74,37 @@ pass. Modules loaded after boot inherently always run at the last pass. +# njl Wishlist +- Device suspend/resume tree sweep. Many drivers do not properly support + device_suspend and device_resume. On my laptop alone, uhci(4) and + snd_ich (pcm(4)) both fail to work after a suspend. We would maintain + a list of drivers and their suspend/resume level of support, similar to + the SMP status page. The goal would be to get maintainers to fix and + mark their devices as working. + +- Fix and/or implement VGA register save/restore so that syscons is not + garbled after a resume. + +- Add a device_suspend_prep() entry that is called before device_suspend(). + ACPI and APM could traverse the bus tree and allow each device to decide + whether or not to veto the suspend request. + +- Add a device_eject() method to allow devices to prepare to eject (i.e. + PC card, Hotplug PCI). Could this be provided by device_shutdown()? + Call ACPI's _EJx methods for the given device as well. + +- Hook newbus so that ACPI Notifies are delivered to the destination + device if it wishes to be aware of them. + +- Add support for ACPI 2.0 to our implementation. This includes implementing + processor power down states (C1, C2, ...), evaluating other namespaces, + etc. Linux has partial 2.0 support. + +- Add support for vendor-specific ACPI devices (like ASUS and Toshiba + laptop buttons). This can be studied in Linux. + +- Much ACPI bugfixing. I'm uncomfortable with the current level of locking, + for instance. + < need to insert phk's wishlist here? >
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