What is the HPET I hear you ask? It is the High Precision Event Timer
that is supposed to supplement and eventually replace the 8254 timer and
the RTC periodic interrupts. Among other things, it is 64 bit (can be
run in 32 bit mode for 32 bit cpus), and is suitable as a replacement for
the ACPI timer on SMP systems (the specs are much better) and as a
replacement for the ITC based synthetic clock for on ia64 systems.
It seems IA64 and AMD64 systems tend to have this. It is likely to start
showing up in i386 systems if it isn't already on some of them.
* AcpiOsDerivePciId(): finds a bus number, given the slot/func and the
acpi parse tree.
* AcpiOsPredefinedOverride(): use the sysctl hw.acpi.os_name to
override the value for _OS.
Ideas from: takawata, jhb
Reviewed by: takawata, marcel
Tested on: i386, ia64
RSDP. Scan the first 1MB on i386 if the sysctl fails,
o Extend struct ACPIrsdp with the ACPI 2.0 fields which involves
changing a prior reserved field into the ACPI revision,
o Only calculate the RSDP checksum on the first 20 bytes to remain
compatible with ACPI 1.0 tables; we don't check the extended
checksum covering the whole table,
o Use the length field in the RSDP to map the RSDP into the address
space so that we don't have to know about future extensions here.
ports/devel/acpitools (iasl).
- Merge AML parser to build ACPI namespace
- Comment header info. out so that ASL compiler ignore them
- Fix DSDT header size to be discarded when DSDT file is specified
for input (acpidump and amldb)
- Write DSDT header as well into DSDT file for output
- Fix some trivial typo (Concatenate and SizeOf)
- Remove DEBUG_FLAGS from Makefile (acpidump and amldb)
Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case) effect of disabling hyphenation within the
entire enclosed block.
The usr.sbin/acpi/ utilities should be compiled non-static.
It just followed the usr.sbin/pccard/Makefile.inc way last time.
Pointed out by: ru and msmith
Committed at: BSD HANAMI in Japan 2001
- acpiconf Replace include files from old acpi driver to acpica driver.
New sleep type `4b' had been added (S4BIOS) for `-s' option.
Of course this has no effect because driver doesn't
support it for now :-)
- acpidump All needed structs in sys/dev/acpi/*.h had been merged
into local header file. No changes on its usage.
OsdSleepUsec(), SleepOp corresponds to OsdSleep() by reading ACPICA
source code.
- Add OsdSleepUsec() which uses DELAY() simply.
- Change unit of acpi_sleep() argument; microseconds to milliseconds.
that it's enabled in acpireg.h only if DIAGNOSTIC option is specified.
ACPICA OSD functions will be compiled in machine/acpi_machdep.c again
tentatively (if DIAGNOSTIC option is specified).
# Should we have acpica_osd.c ?
avoid power on again problem after acpi_soft_off() calling.
- Implement SleepOp/StallOp in AML interpreter. Also provide ACPICA
compatibility.
- Minor changes on __inline function declaration in acpica_osd.h
(obtained from NetBSD porting).
