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/parser/psargs.c b/drivers/acpi/parser/psargs.c
new file mode 100644
index 0000000..b5d9889
--- /dev/null
+++ b/drivers/acpi/parser/psargs.c
@@ -0,0 +1,746 @@
+/******************************************************************************
+ *
+ * Module Name: psargs - Parse AML opcode arguments
+ *
+ *****************************************************************************/
+
+/*
+ * 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.
+ */
+
+
+#include <acpi/acpi.h>
+#include <acpi/acparser.h>
+#include <acpi/amlcode.h>
+#include <acpi/acnamesp.h>
+
+#define _COMPONENT ACPI_PARSER
+ ACPI_MODULE_NAME ("psargs")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ps_get_next_package_length
+ *
+ * PARAMETERS: parser_state - Current parser state object
+ *
+ * RETURN: Decoded package length. On completion, the AML pointer points
+ * past the length byte or bytes.
+ *
+ * DESCRIPTION: Decode and return a package length field
+ *
+ ******************************************************************************/
+
+u32
+acpi_ps_get_next_package_length (
+ struct acpi_parse_state *parser_state)
+{
+ u32 encoded_length;
+ u32 length = 0;
+
+
+ ACPI_FUNCTION_TRACE ("ps_get_next_package_length");
+
+
+ encoded_length = (u32) ACPI_GET8 (parser_state->aml);
+ parser_state->aml++;
+
+
+ switch (encoded_length >> 6) /* bits 6-7 contain encoding scheme */ {
+ case 0: /* 1-byte encoding (bits 0-5) */
+
+ length = (encoded_length & 0x3F);
+ break;
+
+
+ case 1: /* 2-byte encoding (next byte + bits 0-3) */
+
+ length = ((ACPI_GET8 (parser_state->aml) << 04) |
+ (encoded_length & 0x0F));
+ parser_state->aml++;
+ break;
+
+
+ case 2: /* 3-byte encoding (next 2 bytes + bits 0-3) */
+
+ length = ((ACPI_GET8 (parser_state->aml + 1) << 12) |
+ (ACPI_GET8 (parser_state->aml) << 04) |
+ (encoded_length & 0x0F));
+ parser_state->aml += 2;
+ break;
+
+
+ case 3: /* 4-byte encoding (next 3 bytes + bits 0-3) */
+
+ length = ((ACPI_GET8 (parser_state->aml + 2) << 20) |
+ (ACPI_GET8 (parser_state->aml + 1) << 12) |
+ (ACPI_GET8 (parser_state->aml) << 04) |
+ (encoded_length & 0x0F));
+ parser_state->aml += 3;
+ break;
+
+ default:
+
+ /* Can't get here, only 2 bits / 4 cases */
+ break;
+ }
+
+ return_VALUE (length);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ps_get_next_package_end
+ *
+ * PARAMETERS: parser_state - Current parser state object
+ *
+ * RETURN: Pointer to end-of-package +1
+ *
+ * DESCRIPTION: Get next package length and return a pointer past the end of
+ * the package. Consumes the package length field
+ *
+ ******************************************************************************/
+
+u8 *
+acpi_ps_get_next_package_end (
+ struct acpi_parse_state *parser_state)
+{
+ u8 *start = parser_state->aml;
+ acpi_native_uint length;
+
+
+ ACPI_FUNCTION_TRACE ("ps_get_next_package_end");
+
+
+ /* Function below changes parser_state->Aml */
+
+ length = (acpi_native_uint) acpi_ps_get_next_package_length (parser_state);
+
+ return_PTR (start + length); /* end of package */
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ps_get_next_namestring
+ *
+ * PARAMETERS: parser_state - Current parser state object
+ *
+ * RETURN: Pointer to the start of the name string (pointer points into
+ * the AML.
+ *
+ * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name
+ * prefix characters. Set parser state to point past the string.
+ * (Name is consumed from the AML.)
+ *
+ ******************************************************************************/
+
+char *
+acpi_ps_get_next_namestring (
+ struct acpi_parse_state *parser_state)
+{
+ u8 *start = parser_state->aml;
+ u8 *end = parser_state->aml;
+
+
+ ACPI_FUNCTION_TRACE ("ps_get_next_namestring");
+
+
+ /* Handle multiple prefix characters */
+
+ while (acpi_ps_is_prefix_char (ACPI_GET8 (end))) {
+ /* Include prefix '\\' or '^' */
+
+ end++;
+ }
+
+ /* Decode the path */
+
+ switch (ACPI_GET8 (end)) {
+ case 0:
+
+ /* null_name */
+
+ if (end == start) {
+ start = NULL;
+ }
+ end++;
+ break;
+
+ case AML_DUAL_NAME_PREFIX:
+
+ /* Two name segments */
+
+ end += 1 + (2 * ACPI_NAME_SIZE);
+ break;
+
+ case AML_MULTI_NAME_PREFIX_OP:
+
+ /* Multiple name segments, 4 chars each */
+
+ end += 2 + ((acpi_size) ACPI_GET8 (end + 1) * ACPI_NAME_SIZE);
+ break;
+
+ default:
+
+ /* Single name segment */
+
+ end += ACPI_NAME_SIZE;
+ break;
+ }
+
+ parser_state->aml = (u8*) end;
+ return_PTR ((char *) start);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ps_get_next_namepath
+ *
+ * PARAMETERS: parser_state - Current parser state object
+ * Arg - Where the namepath will be stored
+ * arg_count - If the namepath points to a control method
+ * the method's argument is returned here.
+ * method_call - Whether the namepath can possibly be the
+ * start of a method call
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get next name (if method call, return # of required args).
+ * Names are looked up in the internal namespace to determine
+ * if the name represents a control method. If a method
+ * is found, the number of arguments to the method is returned.
+ * This information is critical for parsing to continue correctly.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ps_get_next_namepath (
+ struct acpi_walk_state *walk_state,
+ struct acpi_parse_state *parser_state,
+ union acpi_parse_object *arg,
+ u8 method_call)
+{
+ char *path;
+ union acpi_parse_object *name_op;
+ acpi_status status = AE_OK;
+ union acpi_operand_object *method_desc;
+ struct acpi_namespace_node *node;
+ union acpi_generic_state scope_info;
+
+
+ ACPI_FUNCTION_TRACE ("ps_get_next_namepath");
+
+
+ path = acpi_ps_get_next_namestring (parser_state);
+
+ /* Null path case is allowed */
+
+ if (path) {
+ /*
+ * Lookup the name in the internal namespace
+ */
+ scope_info.scope.node = NULL;
+ node = parser_state->start_node;
+ if (node) {
+ scope_info.scope.node = node;
+ }
+
+ /*
+ * Lookup object. We don't want to add anything new to the namespace
+ * here, however. So we use MODE_EXECUTE. Allow searching of the
+ * parent tree, but don't open a new scope -- we just want to lookup the
+ * object (MUST BE mode EXECUTE to perform upsearch)
+ */
+ status = acpi_ns_lookup (&scope_info, path, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
+ ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &node);
+ if (ACPI_SUCCESS (status) && method_call) {
+ if (node->type == ACPI_TYPE_METHOD) {
+ /*
+ * This name is actually a control method invocation
+ */
+ method_desc = acpi_ns_get_attached_object (node);
+ ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
+ "Control Method - %p Desc %p Path=%p\n",
+ node, method_desc, path));
+
+ name_op = acpi_ps_alloc_op (AML_INT_NAMEPATH_OP);
+ if (!name_op) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /* Change arg into a METHOD CALL and attach name to it */
+
+ acpi_ps_init_op (arg, AML_INT_METHODCALL_OP);
+ name_op->common.value.name = path;
+
+ /* Point METHODCALL/NAME to the METHOD Node */
+
+ name_op->common.node = node;
+ acpi_ps_append_arg (arg, name_op);
+
+ if (!method_desc) {
+ ACPI_REPORT_ERROR ((
+ "ps_get_next_namepath: Control Method %p has no attached object\n",
+ node));
+ return_ACPI_STATUS (AE_AML_INTERNAL);
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
+ "Control Method - %p Args %X\n",
+ node, method_desc->method.param_count));
+
+ /* Get the number of arguments to expect */
+
+ walk_state->arg_count = method_desc->method.param_count;
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /*
+ * Else this is normal named object reference.
+ * Just init the NAMEPATH object with the pathname.
+ * (See code below)
+ */
+ }
+
+ if (ACPI_FAILURE (status)) {
+ /*
+ * 1) Any error other than NOT_FOUND is always severe
+ * 2) NOT_FOUND is only important if we are executing a method.
+ * 3) If executing a cond_ref_of opcode, NOT_FOUND is ok.
+ */
+ if ((((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE) &&
+ (status == AE_NOT_FOUND) &&
+ (walk_state->op->common.aml_opcode != AML_COND_REF_OF_OP)) ||
+
+ (status != AE_NOT_FOUND)) {
+ ACPI_REPORT_NSERROR (path, status);
+
+ acpi_os_printf ("search_node %p start_node %p return_node %p\n",
+ scope_info.scope.node, parser_state->start_node, node);
+
+
+ }
+ else {
+ /*
+ * We got a NOT_FOUND during table load or we encountered
+ * a cond_ref_of(x) where the target does not exist.
+ * -- either case is ok
+ */
+ status = AE_OK;
+ }
+ }
+ }
+
+ /*
+ * Regardless of success/failure above,
+ * Just initialize the Op with the pathname.
+ */
+ acpi_ps_init_op (arg, AML_INT_NAMEPATH_OP);
+ arg->common.value.name = path;
+
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ps_get_next_simple_arg
+ *
+ * PARAMETERS: parser_state - Current parser state object
+ * arg_type - The argument type (AML_*_ARG)
+ * Arg - Where the argument is returned
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Get the next simple argument (constant, string, or namestring)
+ *
+ ******************************************************************************/
+
+void
+acpi_ps_get_next_simple_arg (
+ struct acpi_parse_state *parser_state,
+ u32 arg_type,
+ union acpi_parse_object *arg)
+{
+
+ ACPI_FUNCTION_TRACE_U32 ("ps_get_next_simple_arg", arg_type);
+
+
+ switch (arg_type) {
+ case ARGP_BYTEDATA:
+
+ acpi_ps_init_op (arg, AML_BYTE_OP);
+ arg->common.value.integer = (u32) ACPI_GET8 (parser_state->aml);
+ parser_state->aml++;
+ break;
+
+
+ case ARGP_WORDDATA:
+
+ acpi_ps_init_op (arg, AML_WORD_OP);
+
+ /* Get 2 bytes from the AML stream */
+
+ ACPI_MOVE_16_TO_32 (&arg->common.value.integer, parser_state->aml);
+ parser_state->aml += 2;
+ break;
+
+
+ case ARGP_DWORDDATA:
+
+ acpi_ps_init_op (arg, AML_DWORD_OP);
+
+ /* Get 4 bytes from the AML stream */
+
+ ACPI_MOVE_32_TO_32 (&arg->common.value.integer, parser_state->aml);
+ parser_state->aml += 4;
+ break;
+
+
+ case ARGP_QWORDDATA:
+
+ acpi_ps_init_op (arg, AML_QWORD_OP);
+
+ /* Get 8 bytes from the AML stream */
+
+ ACPI_MOVE_64_TO_64 (&arg->common.value.integer, parser_state->aml);
+ parser_state->aml += 8;
+ break;
+
+
+ case ARGP_CHARLIST:
+
+ acpi_ps_init_op (arg, AML_STRING_OP);
+ arg->common.value.string = (char *) parser_state->aml;
+
+ while (ACPI_GET8 (parser_state->aml) != '\0') {
+ parser_state->aml++;
+ }
+ parser_state->aml++;
+ break;
+
+
+ case ARGP_NAME:
+ case ARGP_NAMESTRING:
+
+ acpi_ps_init_op (arg, AML_INT_NAMEPATH_OP);
+ arg->common.value.name = acpi_ps_get_next_namestring (parser_state);
+ break;
+
+
+ default:
+
+ ACPI_REPORT_ERROR (("Invalid arg_type %X\n", arg_type));
+ break;
+ }
+
+ return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ps_get_next_field
+ *
+ * PARAMETERS: parser_state - Current parser state object
+ *
+ * RETURN: A newly allocated FIELD op
+ *
+ * DESCRIPTION: Get next field (named_field, reserved_field, or access_field)
+ *
+ ******************************************************************************/
+
+union acpi_parse_object *
+acpi_ps_get_next_field (
+ struct acpi_parse_state *parser_state)
+{
+ u32 aml_offset = (u32) ACPI_PTR_DIFF (parser_state->aml,
+ parser_state->aml_start);
+ union acpi_parse_object *field;
+ u16 opcode;
+ u32 name;
+
+
+ ACPI_FUNCTION_TRACE ("ps_get_next_field");
+
+
+ /* determine field type */
+
+ switch (ACPI_GET8 (parser_state->aml)) {
+ default:
+
+ opcode = AML_INT_NAMEDFIELD_OP;
+ break;
+
+ case 0x00:
+
+ opcode = AML_INT_RESERVEDFIELD_OP;
+ parser_state->aml++;
+ break;
+
+ case 0x01:
+
+ opcode = AML_INT_ACCESSFIELD_OP;
+ parser_state->aml++;
+ break;
+ }
+
+
+ /* Allocate a new field op */
+
+ field = acpi_ps_alloc_op (opcode);
+ if (!field) {
+ return_PTR (NULL);
+ }
+
+ field->common.aml_offset = aml_offset;
+
+ /* Decode the field type */
+
+ switch (opcode) {
+ case AML_INT_NAMEDFIELD_OP:
+
+ /* Get the 4-character name */
+
+ ACPI_MOVE_32_TO_32 (&name, parser_state->aml);
+ acpi_ps_set_name (field, name);
+ parser_state->aml += ACPI_NAME_SIZE;
+
+ /* Get the length which is encoded as a package length */
+
+ field->common.value.size = acpi_ps_get_next_package_length (parser_state);
+ break;
+
+
+ case AML_INT_RESERVEDFIELD_OP:
+
+ /* Get the length which is encoded as a package length */
+
+ field->common.value.size = acpi_ps_get_next_package_length (parser_state);
+ break;
+
+
+ case AML_INT_ACCESSFIELD_OP:
+
+ /*
+ * Get access_type and access_attrib and merge into the field Op
+ * access_type is first operand, access_attribute is second
+ */
+ field->common.value.integer = (ACPI_GET8 (parser_state->aml) << 8);
+ parser_state->aml++;
+ field->common.value.integer |= ACPI_GET8 (parser_state->aml);
+ parser_state->aml++;
+ break;
+
+ default:
+
+ /* Opcode was set in previous switch */
+ break;
+ }
+
+ return_PTR (field);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ps_get_next_arg
+ *
+ * PARAMETERS: parser_state - Current parser state object
+ * arg_type - The argument type (AML_*_ARG)
+ * arg_count - If the argument points to a control method
+ * the method's argument is returned here.
+ *
+ * RETURN: Status, and an op object containing the next argument.
+ *
+ * DESCRIPTION: Get next argument (including complex list arguments that require
+ * pushing the parser stack)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ps_get_next_arg (
+ struct acpi_walk_state *walk_state,
+ struct acpi_parse_state *parser_state,
+ u32 arg_type,
+ union acpi_parse_object **return_arg)
+{
+ union acpi_parse_object *arg = NULL;
+ union acpi_parse_object *prev = NULL;
+ union acpi_parse_object *field;
+ u32 subop;
+ acpi_status status = AE_OK;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ps_get_next_arg", parser_state);
+
+
+ switch (arg_type) {
+ case ARGP_BYTEDATA:
+ case ARGP_WORDDATA:
+ case ARGP_DWORDDATA:
+ case ARGP_CHARLIST:
+ case ARGP_NAME:
+ case ARGP_NAMESTRING:
+
+ /* constants, strings, and namestrings are all the same size */
+
+ arg = acpi_ps_alloc_op (AML_BYTE_OP);
+ if (!arg) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+ acpi_ps_get_next_simple_arg (parser_state, arg_type, arg);
+ break;
+
+
+ case ARGP_PKGLENGTH:
+
+ /* Package length, nothing returned */
+
+ parser_state->pkg_end = acpi_ps_get_next_package_end (parser_state);
+ break;
+
+
+ case ARGP_FIELDLIST:
+
+ if (parser_state->aml < parser_state->pkg_end) {
+ /* Non-empty list */
+
+ while (parser_state->aml < parser_state->pkg_end) {
+ field = acpi_ps_get_next_field (parser_state);
+ if (!field) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ if (prev) {
+ prev->common.next = field;
+ }
+ else {
+ arg = field;
+ }
+
+ prev = field;
+ }
+
+ /* Skip to End of byte data */
+
+ parser_state->aml = parser_state->pkg_end;
+ }
+ break;
+
+
+ case ARGP_BYTELIST:
+
+ if (parser_state->aml < parser_state->pkg_end) {
+ /* Non-empty list */
+
+ arg = acpi_ps_alloc_op (AML_INT_BYTELIST_OP);
+ if (!arg) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /* Fill in bytelist data */
+
+ arg->common.value.size = (u32) ACPI_PTR_DIFF (parser_state->pkg_end,
+ parser_state->aml);
+ arg->named.data = parser_state->aml;
+
+ /* Skip to End of byte data */
+
+ parser_state->aml = parser_state->pkg_end;
+ }
+ break;
+
+
+ case ARGP_TARGET:
+ case ARGP_SUPERNAME:
+ case ARGP_SIMPLENAME:
+
+ subop = acpi_ps_peek_opcode (parser_state);
+ if (subop == 0 ||
+ acpi_ps_is_leading_char (subop) ||
+ acpi_ps_is_prefix_char (subop)) {
+ /* null_name or name_string */
+
+ arg = acpi_ps_alloc_op (AML_INT_NAMEPATH_OP);
+ if (!arg) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ status = acpi_ps_get_next_namepath (walk_state, parser_state, arg, 0);
+ }
+ else {
+ /* single complex argument, nothing returned */
+
+ walk_state->arg_count = 1;
+ }
+ break;
+
+
+ case ARGP_DATAOBJ:
+ case ARGP_TERMARG:
+
+ /* single complex argument, nothing returned */
+
+ walk_state->arg_count = 1;
+ break;
+
+
+ case ARGP_DATAOBJLIST:
+ case ARGP_TERMLIST:
+ case ARGP_OBJLIST:
+
+ if (parser_state->aml < parser_state->pkg_end) {
+ /* non-empty list of variable arguments, nothing returned */
+
+ walk_state->arg_count = ACPI_VAR_ARGS;
+ }
+ break;
+
+
+ default:
+
+ ACPI_REPORT_ERROR (("Invalid arg_type: %X\n", arg_type));
+ status = AE_AML_OPERAND_TYPE;
+ break;
+ }
+
+ *return_arg = arg;
+ return_ACPI_STATUS (status);
+}