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Signed-off-by: Len Brown <len.brown@intel.com>
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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: Len Brown <len.brown@intel.com>
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Fixed three cases in the interpreter where an "index"
argument to an ASL function was still (internally) 32
bits instead of the required 64 bits. This was the Index
argument to the Index, Mid, and Match operators.
The "strupr" function is now permanently local
(acpi_ut_strupr), since this is not a POSIX-defined
function and not present in most kernel-level C
libraries. References to the C library strupr function
have been removed from the headers.
Completed the deployment of static
functions/prototypes. All prototypes with the static
attribute have been moved from the headers to the owning
C file.
ACPICA 20050329 from Bob Moore
An error is now generated if an attempt is made to create
a Buffer Field of length zero (A CreateField with a length
operand of zero.)
The interpreter now issues a warning whenever executable
code at the module level is detected during ACPI table
load. This will give some idea of the prevalence of this
type of code.
Implemented support for references to named objects (other
than control methods) within package objects.
Enhanced package object output for the debug
object. Package objects are now completely dumped, showing
all elements.
Enhanced miscellaneous object output for the debug
object. Any object can now be written to the debug object
(for example, a device object can be written, and the type
of the object will be displayed.)
The "static" qualifier has been added to all local
functions across the core subsystem.
The number of "long" lines (> 80 chars) within the source
has been significantly reduced, by about 1/3.
Cleaned up all header files to ensure that all CA/iASL
functions are prototyped (even static functions) and the
formatting is consistent.
Two new header files have been added, acopcode.h and
acnames.h.
Removed several obsolete functions that were no longer
used.
Signed-off-by: Len Brown <len.brown@intel.com>
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Added 2005 copyright to all ACPICA files.
Fixed an issue with the String-to-Buffer conversion code
where the string null terminator was not included in the
buffer after conversion, but there is existing ASL that
assumes the string null terminator is included. This is the
root of the ACPI_AML_BUFFER_LIMIT regression. This problem
was introduced in the previous version when the code was
updated to correctly set the converted buffer size as per
the ACPI specification. The ACPI spec is ambiguous and
will be updated to specify that the null terminator must
be included in the converted buffer. This also affects
the ToBuffer() ASL operator.
Fixed a problem with the Mid() ASL/AML operator where it
did not work correctly on Buffer objects. Newly created
sub-buffers were not being marked as initialized.
Fixed a problem in acpi_tb_find_table where incorrect string
compares were performed on the oem_id and oem_table_d table
header fields. These fields are not null terminated,
so strncmp is now used instead of strcmp.
Implemented a restriction on the Store() ASL/AML operator
to align the behavior with the ACPI specification.
Previously, any object could be used as the source
operand. Now, the only objects that may be used are
Integers, Buffers, Strings, Packages, Object References,
and DDB Handles. As acpi_gbl_enable_interpreter_slack
is FALSE by default, "acpi=strict" is needed to enable
this check.
Enhanced the optional "implicit return" support to allow
an implicit return value from methods that are invoked
externally via the AcpiEvaluateObject interface. This
enables implicit returns from the _STA and _INI methods,
for example.
Changed the Revision() ASL/AML operator to return the
current version of the AML interpreter, in the YYYYMMDD
format. Previously, it incorrectly returned the supported
ACPI version (This is the function of the _REV method).
Updated the _REV predefined method to return the currently
supported version of ACPI, now 3.
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The low-level field insertion/extraction code (exfldio)
has been completely rewritten to eliminate unnecessary
complexity, bugs, and boundary conditions.
Fixed a problem in the ToInteger, ToBuffer, ToHexString,
and ToDecimalString operators where the input operand could
be inadvertently deleted if no conversion was necessary
(e.g., if the input to ToInteger was an Integer object.)
Fixed a problem with the ToDecimalString and ToHexString
where an incorrect exception code was returned if the
resulting string would be > 200 chars. AE_STRING_LIMIT is
now returned.
Fixed a problem with the Concatenate operator where AE_OK
was always returned, even if the operation failed.
Fixed a problem in oswinxf (used by AcpiExec and iASL)
to allow > 128 semaphores to be allocated.
Signed-off-by: Len Brown <len.brown@intel.com>
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Signed-off-by: Len Brown <len.brown@intel.com>
Added a new OSL interface, acpi_os_get_timer. This
interface implements a 64-bit monotonic timer in 100
nanosecond units.
Implemented support for the ACPI 3.0 Timer operator.
This 64-bit timer utilizes the timer provided by the
acpi_os_get_timer interface.
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Signed-off-by: Len Brown <len.brown@intel.com>
Implemented support for implicit object conversion in
the non-numeric logical operators (LEqual, LGreater,
LGreaterEqual, LLess, LLessEqual, and LNotEqual.) Any
combination of Integers/Strings/Buffers may now be used;
the second operand is implicitly converted on the fly to
match the type of the first operand. For example:
LEqual (Source1, Source2)
Source1 and Source2 must each evaluate to an integer, a
string, or a buffer. The data type of Source1 dictates the
required type of Source2. Source2 is implicitly converted
if necessary to match the type of Source1.
Updated and corrected the behavior of the string
conversion support. The rules concerning conversion of
buffers to strings (according to the ACPI specification)
are as follows:
ToDecimalString - explicit byte-wise conversion of buffer
to string of decimal values (0-255) separated by commas.
ToHexString - explicit byte-wise conversion of buffer to
string of hex values (0-FF) separated by commas.
ToString - explicit byte-wise conversion of buffer to
string. Byte-by-byte copy with no transform except NULL
terminated. Any other implicit buffer-to-string conversion
byte-wise conversion of buffer to string of hex values
(0-FF) separated by spaces.
Fixed a problem in acpi_ns_get_pathname_length where the
returned length was one byte too short in the case of a
node in the root scope. This could cause a fault during
debug output.
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Fixed a problem where errors occurring during the parse phase of control
method execution did not abort cleanly. For example, objects created
and installed in the namespace were not deleted. This caused all
subsequent invocations of the method to return the AE_ALREADY_EXISTS
exception.
Implemented a mechanism to force a control method to "Serialized"
execution if the method attempts to create namespace objects.
(The root of the AE_ALREADY_EXISTS problem.)
Implemented support for the predefined _OSI "internal" control method.
Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
and "Windows 2001.1", and can be easily upgraded for new strings as
necessary. This feature allows Linux to execute
the fully tested, "Windows" code path through the ASL code
Global Lock Support: Now allows multiple acquires and releases with any
internal thread. Removed concept of "owning thread" for this special
mutex.
Fixed two functions that were inappropriately declaring large objects on
the CPU stack: ps_parse_loop() and ns_evaluate_relative().
Reduces the stack usage during method execution considerably.
Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
Fixed a problem where acpi_ev_gpe_detect() would fault
if there were no GPEs defined on the machine.
Implemented two runtime options: One to force all control method
execution to "Serialized" to mimic Windows behavior, another to disable
_OSI support if it causes problems on a given machine.
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The purpose of this release is primarily to update the copyright years
in each module, thus causing a huge number of diffs. There are a few
small functional changes, however.
Improved error messages when there is a problem finding one or more of
the required base ACPI tables
Reintroduced the definition of APIC_HEADER in actbl.h
Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
Removed extraneous reference to NewObj in dsmthdat.c
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