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  1. 14 Jul, 2005 1 commit
    • Robert Moore's avatar
      ACPICA 20050617-0624 from Bob Moore <robert.moore@intel.com> · 73459f73
      Robert Moore authored 
      ACPICA 20050617:

Moved the object cache operations into the OS interface
layer (OSL) to allow the host OS to handle these operations
if desired (for example, the Linux OSL will invoke the
slab allocator).  This support is optional; the compile
time define ACPI_USE_LOCAL_CACHE may be used to utilize
the original cache code in the ACPI CA core.  The new OSL
interfaces are shown below.  See utalloc.c for an example
implementation, and acpiosxf.h for the exact interface
definitions.  Thanks to Alexey Starikovskiy.
	acpi_os_create_cache
	acpi_os_delete_cache
	acpi_os_purge_cache
	acpi_os_acquire_object
	acpi_os_release_object

Modified the interfaces to acpi_os_acquire_lock and
acpi_os_release_lock to return and restore a flags
parameter.  This fits better with many OS lock models.
Note: the current execution state (interrupt handler
or not) is no longer passed to these interfaces.  If
necessary, the OSL must determine this state by itself, a
simple and fast operation.  Thanks to Alexey Starikovskiy.

Fixed a problem in the ACPI table handling where a valid
XSDT was assumed present if the revision of the RSDP
was 2 or greater.  According to the ACPI specification,
the XSDT is optional in all cases, and the table manager
therefore now checks for both an RSDP >=2 and a valid
XSDT pointer.  Otherwise, the RSDT pointer is used.
Some ACPI 2.0 compliant BIOSs contain only the RSDT.

Fixed an interpreter problem with the Mid() operator in the
case of an input string where the resulting output string
is of zero length.  It now correctly returns a valid,
null terminated string object instead of a string object
with a null pointer.

Fixed a problem with the control method argument handling
to allow a store to an Arg object that already contains an
object of type Device.  The Device object is now correctly
overwritten.  Previously, an error was returned.

ACPICA 20050624:

Modified the new OSL cache interfaces to use ACPI_CACHE_T
as the type for the host-defined cache object.  This allows
the OSL implementation to define and type this object in
any manner desired, simplifying the OSL implementation.
For example, ACPI_CACHE_T is defined as kmem_cache_t for
Linux, and should be defined in the OS-specific header
file for other operating systems as required.

Changed the interface to AcpiOsAcquireObject to directly
return the requested object as the function return (instead
of ACPI_STATUS.) This change was made for performance
reasons, since this is the purpose of the interface in the
first place.  acpi_os_acquire_object is now similar to the
acpi_os_allocate interface.  Thanks to Alexey Starikovskiy.

Modified the initialization sequence in
acpi_initialize_subsystem to call the OSL interface
acpi_osl_initialize first, before any local initialization.
This change was required because the global initialization
now calls OSL interfaces.

Restructured the code base to split some files because
of size and/or because the code logically belonged in a
separate file.  New files are listed below.

  utilities/utcache.c	/* Local cache interfaces */
  utilities/utmutex.c	/* Local mutex support */
  utilities/utstate.c	/* State object support */
  parser/psloop.c	/* Main AML parse loop */
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
      73459f73
  3. 13 Jul, 2005 2 commits
    • Robert Moore's avatar
      ACPICA 20050526 from Bob Moore <robert.moore@intel.com> · 88ac00f5
      Robert Moore authored 
      Implemented support to execute Type 1 and Type 2 AML
opcodes appearing at the module level (not within a control
method.)  These opcodes are executed exactly once at the
time the table is loaded. This type of code was legal up
until the release of ACPI 2.0B (2002) and is now supported
within ACPI CA in order to provide backwards compatibility
with earlier BIOS implementations. This eliminates the
"Encountered executable code at module level" warning that
was previously generated upon detection of such code.

Fixed a problem in the interpreter where an AE_NOT_FOUND
exception could inadvertently be generated during the
lookup of namespace objects in the second pass parse of
ACPI tables and control methods. It appears that this
problem could occur during the resolution of forward
references to namespace objects.

Added the ACPI_MUTEX_DEBUG #ifdef to the
acpi_ut_release_mutex function, corresponding to the same
the deadlock detection debug code to be compiled out in
the normal case, improving mutex performance (and overall
subsystem performance) considerably.  As suggested by
Alexey Starikovskiy.

Implemented a handful of miscellaneous fixes for possible
memory leaks on error conditions and error handling
control paths. These fixes were suggested by FreeBSD and
the Coverity Prevent source code analysis tool.

Added a check for a null RSDT pointer in
acpi_get_firmware_table (tbxfroot.c) to prevent a fault
in this error case.

Signed-off-by Len Brown <len.brown@intel.com>
      88ac00f5
    • Robert Moore's avatar
      ACPICA from Bob Moore <robert.moore@intel.com> · 6f42ccf2
      Robert Moore authored 
      Implemented support for PCI Express root bridges
-- added support for device PNP0A08 in the root
bridge search within AcpiEvPciConfigRegionSetup.
acpi_ev_pci_config_region_setup().

The interpreter now automatically truncates incoming
64-bit constants to 32 bits if currently executing out
of a 32-bit ACPI table (Revision < 2). This also affects
the iASL compiler constant folding. (Note: as per below,
the iASL compiler no longer allows 64-bit constants within
32-bit tables.)

Fixed a problem where string and buffer objects with
"static" pointers (pointers to initialization data within
an ACPI table) were not handled consistently. The internal
object copy operation now always copies the data to a newly
allocated buffer, regardless of whether the source object
is static or not.

Fixed a problem with the FromBCD operator where an
implicit result conversion was improperly performed while
storing the result to the target operand. Since this is an
"explicit conversion" operator, the implicit conversion
should never be performed on the output.

Fixed a problem with the CopyObject operator where a copy
to an existing named object did not always completely
overwrite the existing object stored at name. Specifically,
a buffer-to-buffer copy did not delete the existing buffer.

Replaced "interrupt_level" with "interrupt_number" in all
GPE interfaces and structs for consistency.
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
      6f42ccf2
  5. 12 Jul, 2005 36 commits
  7. 17 Jun, 2005 1 commit
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