diff --git a/en/projects/acpi/completed.sgml b/en/projects/acpi/completed.sgml index e9c3f94d9c..ba002476bb 100644 --- a/en/projects/acpi/completed.sgml +++ b/en/projects/acpi/completed.sgml @@ -1,339 +1,341 @@ - + %includes; %developers; ]> &header;

Completed Project List

- + then reverted once _OSI support was available. ACPI-CA still + has a default of "Microsoft Windows NT™". + - + - + - + - + - + probe. Done. + + being powered off. +
Add methods to get/set ints acpi_EvaluateInteger only gets an int. Update api to get/set so that every consumer does not end up defining their own. &a.marks;
Fix getenv_string. Does not seem to work in sys/dev/acpica/Osd/OsdTable.c. Turned out the name should not end in "_name". &a.marks; and &a.grehan;
acpi_video manpage. See appendix B of the ACPI 2.0 spec for info on what this driver does as well as look at the sysctls it exports. &a.marks;
fd0 not working on Intel boards. The floppy device did not work due to the _CRS object on some systems splitting the IO port into three 2 port resources (6 ports total). Fix committed to sys/isa/fd.c to work with this type of resource specification. &a.njl; and &a.jhb;
Some BIOSs use 0x3f2-0x3f5 as the port range -- the real range is 0x3f0-0x3f5, 0x3f7. Workaround committed. &a.imp;
ACPI Debugging Handbook Page -- Introduction to ACPI for new users as well as how to assist us in fixing problems as they arise. &a.njl; and &a.trhodes;
acpi_video driver (njl) -- Imported. &a.njl; and Taku YAMAMOTO (driver author)
BIOS blacklist -- implement a mechanism and specific quirks to disable features or ACPI entirely on known broken systems. If a custom DSDT is loaded, do not check it against the blacklist (since a user may fix the DSDT without changing the vendor/revision fields.) Add blacklist option for disabling acpi on certain systems. &a.njl
acpi_toshiba man page -- Driver submitted by Hiroyuki Aizu and committed. All it needs is someone to try it out and document the sysctls. &a.philip;
Invalid PBLK length workaround -- Accept a PBLK of length 5 (spec says 6). Only enable C2 for this though. Some people may be using 7 to indicate another C3 state but we do not support the extra state. &a.njl;
Check EcSpacehandler to make sure it is correct for multi-byte access. Found off-by-one in that the last address (0xff) could never be written or read.  
Pick a default MS OS to claim -- Too much ASL depends on a MS OS string so we should masquerade as the most accurate one. Picked Win2k™ ("Microsoft Windows NT™"), - then reverted once _OSI support was available. &a.njl;
Handle DPF resource types in acpi_pcib.c -- Some _PRS values are bracketed with start/end dependent function resource descriptors. Parse/skip them to fix PCI IRQ routing. &a.njl;
acpi_toshiba updates -- Implement support for DSSX which appears to be the only way to do display switching (other than acpi_video). &a.njl;
ASUS driver -- Driver for ASUS ACPI extras (hotkeys). Similar to the acpi4asus.sf.net Linux project. &a.philip;
Fix sysctls for debug layer/level -- setting from usermode via a sysctl did not work. &a.njl;
Make lid and sleep button sysctls default to min(supported_states) -- lid switch now defaults to NONE, sleep button to minimum sleep state available. &a.njl;
newbus attachments for cpu -- Get cpu devices under newbus so drivers like cpufreq can probe/attach. &a.njl;
Make CPU cx_lowest sysctl more readable -- Use C[1-9] instead of the index value. &a.njl;
Update EC GLK check -- Use the handle from the table to read _GLK instead of always defaulting to using the global lock. &a.njl;
Merge ECDT/EC probe &a.njl;
_INI methods -- run for all devices, not just Device objects. ACPI-CA now calls _INI for Devices, ThermalZones and Processors.  
Fix acpidump failing on several systems -- acpidump(8) fails on some systems. I suspect this may be in how we search low memory for the RSDP. Changed to only search EBDA (1 KB pointed to by 16 bit pointer at 0x40E) and high memory (0xE0000 - 0xFFFFF) according to the spec (section 5.2.2). &a.njl;
Fix apm compat interface -- Hacked around this in the userland utility by marking values >= 255 as "unknown". &a.njl;
Update GPE code to handle general device wake -- Also, disable GPEs that are not valid when entering a new sleep state. Without this, GPEs for the lid left enabled on a Thinkpad™ X22 restart the system after power off. Add userland interface for enabling device wake (done as per-device sysctls). &a.njl;
Fix shutdown routines to not poke all the events (causes auto power on for some people). Workaround is to set hw.acpi.disable_on_poweroff=0. Now that GPEs are properly disabled based on _PRW during suspend and poweroff, we can hopefully remove the call to acpi_Disable() in the poweroff path. We now handle the reboot case also by hooking device_shutdown(). &a.njl;
Cleanup acpidump/boot EBDA lengths. &a.njl;
Fix acpi_cpu busy refcount -- We no longer use a refcount but instead avoid doing any housekeeping after re-enabling interrupts at the end of acpi_cpu_idle(). Otherwise, the context switch after unmasking ints could disrupt device state. &a.njl;
Do not print an error message for _PR0 method -- If not present, do not print an error in switch_consumer. &a.njl;
acpi sysresource probing -- Probe/attach acpi resources in the acpi bus and then dole it out to children as necessary. Requires rman(9). Includes more sophisticated handling of device ordering in scan. &a.njl;
Update ACPI blacklist -- Read entries from various OS's and add them to our blacklist table. &a.njl;, &a.marks;
Fix general wake code -- remove use of device_t flags as they may collide with the driver. Use an acpi ivar instead. Fix for non-acpi devices as well by using a bus walk routine instead of device_suspend. Add code to turn on appropriate power resources. Disable EC in shutdown path. &a.njl;
Fix drivers and the apm compat interface -- Currently, the apm compat interface expects byte values but the ABI used is a set of u_ints and an int. Either the apm or acpi battery drivers (or both) are setting the value to -1, which results in 0xffffffff being passed back as the current state. Really, only 255 should be returned in this case. The apm userland utility marks values >= 255 as "unknown" to work around this. But really the underlying drivers should be fixed. &a.imp;
Fix EC timeouts -- move to a sx lock to cover EcWait instead of a mutex so we can hold it across msleep. This fixed the timed out errors that occurred occasionally for some users. &a.njl;
Package all info on how to do an ACPI import -- done and handed off to &a.marks; for inclusion in the acpi projects website. &a.njl;
ACPI floppy driver probing -- Add a fdc_acpi_probe method to enumerate floppies using _FDE, _FDI methods. &a.njl;
Rework ACPI PCI link support -- _DIS all links, ignore invalid _CRS, ignore _STA, assume _SRS succeeds. &a.njl;
Fix EISA probe not to write to registers. Turns out an inb actually triggers the boot hang. Patch committed to only probe the first slot; however, this breaks the Adaptec VLB adapter (not EISA). &a.gibbs; is fixing that device's - probe. &a.njl;
Giant-free locking -- Remove dependency on Giant. &a.njl;
Add SSDT support to acpidump(8) -- Right now we only dump the fixed tables and DSDT. Change acpidump(8) to dump the SSDT tables. It currently concatenates them with the DSDT. &a.marcel;
Change shutdown path -- do not use smp_rendezvous() since it acquires a spinlock. Instead, MI code should run the shutdown path only on the BSP and all other processors should be halted. &a.peter;
Turn ACPI and PCI devices off or to a lower power state in suspend and back on again in resume. Override the default of D3 with the value the BIOS specifies in _SxD, if present. Skip serial devices (PNP05xx) since they seem to hang when set to D3 and may require special driver support. Also skip non-type 0 PCI devices (i.e., bridges) since they don't seem to handle - being powered off. &a.njl;
&footer; diff --git a/en/projects/acpi/index.sgml b/en/projects/acpi/index.sgml index d5b5abb47a..2f54a927b8 100644 --- a/en/projects/acpi/index.sgml +++ b/en/projects/acpi/index.sgml @@ -1,625 +1,639 @@ - + %includes; N/A"> Done"> In progress"> Needs testing"> Not done"> Unknown"> %developers; ]> &header;

Contents

Description

The acpi driver provides support for the Intel/Microsoft/Compaq/Toshiba ACPI standard. This support includes platform hardware discovery (super- seding the PnP and PCI BIOS), as well as power management (superseding APM) and other features. ACPI core support is provided by the ACPI CA reference implementation from Intel.

+

Information on using and debugging ACPI can be found in the + + handbook entry and + man page.

+

If you are looking for the list of completed projects not located on this page, it can be found here.

TODO List

High Priority Tasks

- + - - + + ACPI throttling, Enhanced SpeedStep, P4 TCC - + - + - + - - + + - - + + - + - - - + + + + + + + + + + +
Task Responsible Last updated Priority Notes
Giant-free locking &a.njl; December 4, 2004 &status.done; Code halfway done, battery subsys needs reworking - before locking Done. Some complaints of boot-time battery read hang + remain.
newbus attachments for cpu — get cpu devices under newbus so drivers like cpufreq can probe/attach &a.njl; December 4, 2004 &status.done; Deal with unexpected conflicts on non-x86 platforms  
cpufreq — Common CPU frequency/voltage driver
Write initial drivers: ICH SpeedStep, ACPI performance, - ACPI throttling &a.njl; December 4, 2004 February 20, 2005 &status.done;  
Add bus methods/ivars for child attachments to both acpi and legacy cpu devices &a.njl; December 4, 2004 February 15, 2005 &status.done;  
Design sysctl interface &a.njl; December 4, 2004 &status.new; &status.done;  
Design notify interface for Px changes &a.njl; December 4, 2004 &status.new;   &status.done; We may need an interface to notify external users of changes + to the bus and CPU frequency separately.
Update power_profile to use cpufreq &a.njl; December 4, 2004 &status.new; February 15, 2005 &status.done;  
Disable acpi_cpu taking over idling if only - C1 available Import powerd &a.njl; December 4, 2004 &status.new;   February 20, 2005 &status.done; Mostly based on Colin Percival's estctrl.
acpi_cpu — Finish work on CPU driver
_CST re-evaluation &a.njl; December 4, 2004 &status.new; Needs testing/debugging
Fix shared user of a P_BLK (refcount) &a.njl; December 4, 2004 &status.new;  
Disable acpi_cpu taking over idling if only + C1 available &a.njl; December 4, 2004 &status.new; I still want to keep acpi_cpu in the loop on SMP systems + so we should leave this as-is for now.
eject methods — implement eject and dynamic reprobing of acpi namespace &a.njl; December 4, 2004 &status.untested;  

Medium Priority Tasks

Hotkey/backlight/sound generic driver Add a driver that generalizes the various device-specific ways of adjusting backlight, sound volume, hotkey support, etc. It should provide generic sysctls for these and attach to the hw-specific drivers (acpi_video, acpi_asus, acpi_toshiba, etc.)     &status.wip;  
Fujitsu driver -- Driver for Fujitsu laptop extras. Just needs to be cleaned up (use acpi_UserNotify instead of the signal stuff) and imported. &a.marks;   &status.wip; See Seans driver.

Low Priority Tasks

- +
Implement X suspend/resume notification. Currently, the X server on FreeBSD is not notified of a suspend. We explicitly switch to a VTY on syscons before resume to get the server to save and then restore all the registers. This works for many systems but not if the display is left in less initialized at resume than the VTY switch code can handle. There is an interface (in the X server bsd_apm.c) for doing ioctls to find out about the suspend. First, check if this file is built on FreeBSD as it appears to only be built on NetBSD. Then implement the ioctls in both apm and acpi (on the apm compat device). Here is a patch to help the X file compile. For acpi, we do not want a user process dying to hold up the suspend process so implement the notification with a timeout. That is, if the kernel generates a APM_STANDBY_REQ notification and it doesn't receive a APM_IOC_STANDBY within say 5 seconds, continue the suspend process. This is needed for standby when X is not running, for instance, or when an emergency suspend is generated by a battery going critical.     &status.new;  
Examine the two video resume hacks (int 0x10, lcall 0xc000). Linux has begun to test calling the "lcall" VESA reset after PCI devices (including the video card) have been fully resumed, including power state set to PS0. This works for many Radeon cards but fails for others. We could implement this in vm86 calls from a proper video driver resume method. Also, implement the int 10h resume hack that Linux has since we do not have that yet. It is unclear how effective it is but some systems do require it.     &status.new;  
Check our DWORD access to EC regions, including endianness. Currently, we treat DWORD access as little-endian, which makes sense on PCs. It's really not correct to do use access other than BYTE for EC space but some ASL uses DWORD. Also, we should test what happens for AnyAccess reads/writes to EC space since some ASL does this too.     &status.new;  
ACPI-CA should really enable GPEs before calling \_WAK. Currently it does the opposite. This does not match the ACPI spec where \_WAK should be called after the system is up and running (\_BFS is what should be called as soon as possible after waking.)     &status.new;  
Potential ASL bug: We may need to work around some systems having the S3 object listed under the LPC bus device (PNP0A03) instead of root (\). This is ACPI-CA's responsibility.     &status.new;  
For systems that fail to power off, try using the suspend code (acpi_SetSleepState) instead.     &status.new;  
See if we can enable EC access early even if an ECDT is not present. The _INI method for some ECs accesses the EC region even though _REG has not been called since the region is not initialized yet. It is likely that Windows hard-codes the EC resources and enables the region before initializing the device even though this is not allowed by the spec.     &status.new;  
Implement reset register functionality for rebooting systems that lack a keyboard controller (see ACPI v2 FADT->ResetRegister).     &status.new;  
Be sure not to try to disable ACPI on systems that do not have SMI_CMD or ACPI_ENABLE/DISABLE values in the FADT. The ia64 machines specify ACPI-only (no legacy mode) so they have 0 for these values and we should not enable/disable ACPI on them. Doing so gives a "failed to switch modes" warning but no real problems, apparently.     &status.new;  
Check our implementation of AcpiOsDerivePciId(). It is probably not quite right. Compare against Linux.     &status.new;  
Run instructions on cpu0 for suspend/resume. We currently do this for shutdown in kern_shutdown.c:boot(). This will also be required for SMP cpufreq drivers that set the frequency via a CPU-specific MSR.     &status.new;  
Implement passive cooling in ACPI thermal. It should use the cpufreq interface to cool the processor, based on the various _PSV settings. Also, we need to implement variable polling intervals for thermal zones based on both the passive settings and polling explicitly specified in the ASL.     &status.new;  
Traverse local reference (scope) types in namespace when probing devices.     &status.new;  
IBM Thinkpad extras driver -- Driver for Thinkpad hotkeys. &a.takawata;   &status.done;  
Call _S0D on resume (power up?)     &status.new; &status.done;  
Implement support for _PRS/_SRS and dependent functions. This will allow serial port configuration to occur.     &status.new;  
Fix stray irq 9 on reboot -- AcpiTerminate -> AcpiEvTerminate unhooks the SCI and then we get a stray irq. Debug why. Also, disable/ re-enable acpi gives "SCI already attached". Check flags for AcpiDisable vs. AcpiTerminate. This looks uncommon and does not cause any problems so it will be ignored for now. &a.njl;   &status.wip;  
Add EC burst mode -- Code was written before to add burst mode to the EC. Unfortunately, it had to be disabled since it did not appear to work on all systems. Perhaps on some systems do not function correctly without burst mode, so it will be added back with some logic to fallback if it fails.     &status.new;  
Add smart battery support -- Smart batteries use the SMBus to communicate data instead of the embedded controller for control-method batteries. Newer ACER laptops have this and it will be needed for battery status on them. This is rather difficult since it involves interfacing with the SMBus drivers (likely need some kobj methods for this.)     &status.new;  
Intel firmware seems to describe the PCI root bridge where chipset configuration space lives with _STA==0x8. The spec says this means "functional, but not present". The current code ignores things that are "not present" ( msg). It is suggested that this should be handled by not attaching a driver to the device (i.e. bridge) but probe its children. Present on Big Sur and Bull systems.     &status.new;  
Re-work device wake setup to not be recursive. The acpi_wake_sysctl_walk() syscall has to call itself to handle child devices on other busses (PCI). This should probably be changed to be a DEVMETHOD.     &status.new;  
device_power -- Add a "power" argument to devctl(8) that allows a device to be set into various low power or off states.     &status.new;  
device_eject -- Add a devctl(8) program that has an "eject" argument. Allow users to eject various object names ("/dev/cdrom", "/mnt/flashdrive", "wi0", "pci0:2:0"). Call the appropriate _EJD and _EJx methods if appropriate. &a.imp;, &a.jhb;, and &a.takawata;   &status.wip;  
suspend to disk -- Implement a suspend/resume from disk mechanism. Possibly use the dump functions to dump pages to disk, then use ACPI to put the system in S4 or power-off. Resume would require changes to the loader to load the memory image directly and then begin executing again.     &status.new;  
HP/Toshiba Satellite driver -- Enabling the extra one-touch/multimedia keys, console blanking, battery and temperature reporting, etc. Get an idea of what is needed from the Linux OMKE project .     &status.new;  
ASL capture bootable CD-R -- Build a set of scripts to generate a bootable CD-R. It should have a GENERIC kernel and acpidump/iasl as well as all support libraries. Replace init with a script such that booting the CD generates an acpidump -t -d > machine.asl and dmesg > machine.dmesg in an MFS partition. Then burn this info to a second track on the CD-R. This will make an easy way to take a batch of CDRWs to the local computer store, place them in the CDRW drive, boot FreeBSD and get the ASL.     &status.new;  
ASL Explorer -- Graphical utility for examining the output of acpidump(8). Contact &a.njl; for info about the design if you are interested in implementing this.     &status.new;  
Document acpi kernel interfaces -- Document the interfaces for drivers found in acpivar.h.     &status.new;  
KTR support for ACPI debug messages -- Use the KTR logging facility instead of printf for ACPI debugging messages. This would allow more verbose messages and fast dumping.     &status.new;  
Add support for the real-time clock (RTC) to use to wake or power-on systems at a certain time of day.     &status.new;  
Quiesce USB when no device is attached (see Linux UHCI) -- this would help such systems use C3 more, saving power with USB loaded. While at it, fix uhci suspend/resume.     &status.new;  

Platform Support Status

Task Responsible Last updated Status Details
amd64 &acpi-mail; April 14, 2004 &status.wip;  
i386 &acpi-mail; April 14, 2004 &status.wip;  
ia64 &acpi-mail; April 14, 2004 &status.wip;  

References

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