Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/acpi/executer/exutils.c b/drivers/acpi/executer/exutils.c
new file mode 100644
index 0000000..40c6abb
--- /dev/null
+++ b/drivers/acpi/executer/exutils.c
@@ -0,0 +1,378 @@
+
+/******************************************************************************
+ *
+ * Module Name: exutils - interpreter/scanner utilities
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+
+/*
+ * DEFINE_AML_GLOBALS is tested in amlcode.h
+ * to determine whether certain global names should be "defined" or only
+ * "declared" in the current compilation. This enhances maintainability
+ * by enabling a single header file to embody all knowledge of the names
+ * in question.
+ *
+ * Exactly one module of any executable should #define DEFINE_GLOBALS
+ * before #including the header files which use this convention. The
+ * names in question will be defined and initialized in that module,
+ * and declared as extern in all other modules which #include those
+ * header files.
+ */
+
+#define DEFINE_AML_GLOBALS
+
+#include <acpi/acpi.h>
+#include <acpi/acinterp.h>
+#include <acpi/amlcode.h>
+#include <acpi/acevents.h>
+
+#define _COMPONENT ACPI_EXECUTER
+ ACPI_MODULE_NAME ("exutils")
+
+
+#ifndef ACPI_NO_METHOD_EXECUTION
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_enter_interpreter
+ *
+ * PARAMETERS: None
+ *
+ * DESCRIPTION: Enter the interpreter execution region. Failure to enter
+ * the interpreter region is a fatal system error
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_enter_interpreter (void)
+{
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE ("ex_enter_interpreter");
+
+
+ status = acpi_ut_acquire_mutex (ACPI_MTX_EXECUTE);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("Could not acquire interpreter mutex\n"));
+ }
+
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_exit_interpreter
+ *
+ * PARAMETERS: None
+ *
+ * DESCRIPTION: Exit the interpreter execution region
+ *
+ * Cases where the interpreter is unlocked:
+ * 1) Completion of the execution of a control method
+ * 2) Method blocked on a Sleep() AML opcode
+ * 3) Method blocked on an Acquire() AML opcode
+ * 4) Method blocked on a Wait() AML opcode
+ * 5) Method blocked to acquire the global lock
+ * 6) Method blocked to execute a serialized control method that is
+ * already executing
+ * 7) About to invoke a user-installed opregion handler
+ *
+ ******************************************************************************/
+
+void
+acpi_ex_exit_interpreter (void)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ex_exit_interpreter");
+
+
+ status = acpi_ut_release_mutex (ACPI_MTX_EXECUTE);
+ if (ACPI_FAILURE (status)) {
+ ACPI_REPORT_ERROR (("Could not release interpreter mutex\n"));
+ }
+
+ return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_truncate_for32bit_table
+ *
+ * PARAMETERS: obj_desc - Object to be truncated
+ *
+ * RETURN: none
+ *
+ * DESCRIPTION: Truncate a number to 32-bits if the currently executing method
+ * belongs to a 32-bit ACPI table.
+ *
+ ******************************************************************************/
+
+void
+acpi_ex_truncate_for32bit_table (
+ union acpi_operand_object *obj_desc)
+{
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ /*
+ * Object must be a valid number and we must be executing
+ * a control method
+ */
+ if ((!obj_desc) ||
+ (ACPI_GET_OBJECT_TYPE (obj_desc) != ACPI_TYPE_INTEGER)) {
+ return;
+ }
+
+ if (acpi_gbl_integer_byte_width == 4) {
+ /*
+ * We are running a method that exists in a 32-bit ACPI table.
+ * Truncate the value to 32 bits by zeroing out the upper 32-bit field
+ */
+ obj_desc->integer.value &= (acpi_integer) ACPI_UINT32_MAX;
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_acquire_global_lock
+ *
+ * PARAMETERS: field_flags - Flags with Lock rule:
+ * always_lock or never_lock
+ *
+ * RETURN: TRUE/FALSE indicating whether the lock was actually acquired
+ *
+ * DESCRIPTION: Obtain the global lock and keep track of this fact via two
+ * methods. A global variable keeps the state of the lock, and
+ * the state is returned to the caller.
+ *
+ ******************************************************************************/
+
+u8
+acpi_ex_acquire_global_lock (
+ u32 field_flags)
+{
+ u8 locked = FALSE;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ex_acquire_global_lock");
+
+
+ /* Only attempt lock if the always_lock bit is set */
+
+ if (field_flags & AML_FIELD_LOCK_RULE_MASK) {
+ /* We should attempt to get the lock, wait forever */
+
+ status = acpi_ev_acquire_global_lock (ACPI_WAIT_FOREVER);
+ if (ACPI_SUCCESS (status)) {
+ locked = TRUE;
+ }
+ else {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not acquire Global Lock, %s\n",
+ acpi_format_exception (status)));
+ }
+ }
+
+ return_VALUE (locked);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_release_global_lock
+ *
+ * PARAMETERS: locked_by_me - Return value from corresponding call to
+ * acquire_global_lock.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Release the global lock if it is locked.
+ *
+ ******************************************************************************/
+
+void
+acpi_ex_release_global_lock (
+ u8 locked_by_me)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ex_release_global_lock");
+
+
+ /* Only attempt unlock if the caller locked it */
+
+ if (locked_by_me) {
+ /* OK, now release the lock */
+
+ status = acpi_ev_release_global_lock ();
+ if (ACPI_FAILURE (status)) {
+ /* Report the error, but there isn't much else we can do */
+
+ ACPI_REPORT_ERROR (("Could not release ACPI Global Lock, %s\n",
+ acpi_format_exception (status)));
+ }
+ }
+
+ return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_digits_needed
+ *
+ * PARAMETERS: Value - Value to be represented
+ * Base - Base of representation
+ *
+ * RETURN: the number of digits needed to represent Value in Base
+ *
+ ******************************************************************************/
+
+u32
+acpi_ex_digits_needed (
+ acpi_integer value,
+ u32 base)
+{
+ u32 num_digits;
+ acpi_integer current_value;
+
+
+ ACPI_FUNCTION_TRACE ("ex_digits_needed");
+
+
+ /* acpi_integer is unsigned, so we don't worry about a '-' prefix */
+
+ if (value == 0) {
+ return_VALUE (1);
+ }
+
+ current_value = value;
+ num_digits = 0;
+
+ /* Count the digits in the requested base */
+
+ while (current_value) {
+ (void) acpi_ut_short_divide (current_value, base, ¤t_value, NULL);
+ num_digits++;
+ }
+
+ return_VALUE (num_digits);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_eisa_id_to_string
+ *
+ * PARAMETERS: numeric_id - EISA ID to be converted
+ * out_string - Where to put the converted string (8 bytes)
+ *
+ * DESCRIPTION: Convert a numeric EISA ID to string representation
+ *
+ ******************************************************************************/
+
+void
+acpi_ex_eisa_id_to_string (
+ u32 numeric_id,
+ char *out_string)
+{
+ u32 eisa_id;
+
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ /* Swap ID to big-endian to get contiguous bits */
+
+ eisa_id = acpi_ut_dword_byte_swap (numeric_id);
+
+ out_string[0] = (char) ('@' + (((unsigned long) eisa_id >> 26) & 0x1f));
+ out_string[1] = (char) ('@' + ((eisa_id >> 21) & 0x1f));
+ out_string[2] = (char) ('@' + ((eisa_id >> 16) & 0x1f));
+ out_string[3] = acpi_ut_hex_to_ascii_char ((acpi_integer) eisa_id, 12);
+ out_string[4] = acpi_ut_hex_to_ascii_char ((acpi_integer) eisa_id, 8);
+ out_string[5] = acpi_ut_hex_to_ascii_char ((acpi_integer) eisa_id, 4);
+ out_string[6] = acpi_ut_hex_to_ascii_char ((acpi_integer) eisa_id, 0);
+ out_string[7] = 0;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_unsigned_integer_to_string
+ *
+ * PARAMETERS: Value - Value to be converted
+ * out_string - Where to put the converted string (8 bytes)
+ *
+ * RETURN: Convert a number to string representation
+ *
+ ******************************************************************************/
+
+void
+acpi_ex_unsigned_integer_to_string (
+ acpi_integer value,
+ char *out_string)
+{
+ u32 count;
+ u32 digits_needed;
+ u32 remainder;
+
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ digits_needed = acpi_ex_digits_needed (value, 10);
+ out_string[digits_needed] = 0;
+
+ for (count = digits_needed; count > 0; count--) {
+ (void) acpi_ut_short_divide (value, 10, &value, &remainder);
+ out_string[count-1] = (char) ('0' + remainder);\
+ }
+}
+
+#endif