Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 427 insertions, 0 deletions

diff --git a/drivers/acpi/executer/exnames.c b/drivers/acpi/executer/exnames.c
new file mode 100644
index 00000000000..7911c533c26
--- /dev/null
+++ b/drivers/acpi/executer/exnames.c
@@ -0,0 +1,427 @@
+
+/******************************************************************************
+ *
+ * Module Name: exnames - interpreter/scanner name load/execute
+ *
+ *****************************************************************************/
+
+/*
+ * 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/acinterp.h>
+#include <acpi/amlcode.h>
+
+#define _COMPONENT          ACPI_EXECUTER
+	 ACPI_MODULE_NAME    ("exnames")
+
+
+/* AML Package Length encodings */
+
+#define ACPI_AML_PACKAGE_TYPE1   0x40
+#define ACPI_AML_PACKAGE_TYPE2   0x4000
+#define ACPI_AML_PACKAGE_TYPE3   0x400000
+#define ACPI_AML_PACKAGE_TYPE4   0x40000000
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_allocate_name_string
+ *
+ * PARAMETERS:  prefix_count        - Count of parent levels. Special cases:
+ *                                    (-1) = root,  0 = none
+ *              num_name_segs       - count of 4-character name segments
+ *
+ * RETURN:      A pointer to the allocated string segment.  This segment must
+ *              be deleted by the caller.
+ *
+ * DESCRIPTION: Allocate a buffer for a name string. Ensure allocated name
+ *              string is long enough, and set up prefix if any.
+ *
+ ******************************************************************************/
+
+char *
+acpi_ex_allocate_name_string (
+	u32                             prefix_count,
+	u32                             num_name_segs)
+{
+	char                            *temp_ptr;
+	char                            *name_string;
+	u32                              size_needed;
+
+	ACPI_FUNCTION_TRACE ("ex_allocate_name_string");
+
+
+	/*
+	 * Allow room for all \ and ^ prefixes, all segments, and a multi_name_prefix.
+	 * Also, one byte for the null terminator.
+	 * This may actually be somewhat longer than needed.
+	 */
+	if (prefix_count == ACPI_UINT32_MAX) {
+		/* Special case for root */
+
+		size_needed = 1 + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1;
+	}
+	else {
+		size_needed = prefix_count + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1;
+	}
+
+	/*
+	 * Allocate a buffer for the name.
+	 * This buffer must be deleted by the caller!
+	 */
+	name_string = ACPI_MEM_ALLOCATE (size_needed);
+	if (!name_string) {
+		ACPI_REPORT_ERROR (("ex_allocate_name_string: Could not allocate size %d\n", size_needed));
+		return_PTR (NULL);
+	}
+
+	temp_ptr = name_string;
+
+	/* Set up Root or Parent prefixes if needed */
+
+	if (prefix_count == ACPI_UINT32_MAX) {
+		*temp_ptr++ = AML_ROOT_PREFIX;
+	}
+	else {
+		while (prefix_count--) {
+			*temp_ptr++ = AML_PARENT_PREFIX;
+		}
+	}
+
+
+	/* Set up Dual or Multi prefixes if needed */
+
+	if (num_name_segs > 2) {
+		/* Set up multi prefixes   */
+
+		*temp_ptr++ = AML_MULTI_NAME_PREFIX_OP;
+		*temp_ptr++ = (char) num_name_segs;
+	}
+	else if (2 == num_name_segs) {
+		/* Set up dual prefixes */
+
+		*temp_ptr++ = AML_DUAL_NAME_PREFIX;
+	}
+
+	/*
+	 * Terminate string following prefixes. acpi_ex_name_segment() will
+	 * append the segment(s)
+	 */
+	*temp_ptr = 0;
+
+	return_PTR (name_string);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_name_segment
+ *
+ * PARAMETERS:  interpreter_mode    - Current running mode (load1/Load2/Exec)
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute a name segment (4 bytes)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_name_segment (
+	u8                              **in_aml_address,
+	char                            *name_string)
+{
+	char                            *aml_address = (void *) *in_aml_address;
+	acpi_status                     status = AE_OK;
+	u32                             index;
+	char                            char_buf[5];
+
+
+	ACPI_FUNCTION_TRACE ("ex_name_segment");
+
+
+	/*
+	 * If first character is a digit, then we know that we aren't looking at a
+	 * valid name segment
+	 */
+	char_buf[0] = *aml_address;
+
+	if ('0' <= char_buf[0] && char_buf[0] <= '9') {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "leading digit: %c\n", char_buf[0]));
+		return_ACPI_STATUS (AE_CTRL_PENDING);
+	}
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Bytes from stream:\n"));
+
+	for (index = 0;
+		(index < ACPI_NAME_SIZE) && (acpi_ut_valid_acpi_character (*aml_address));
+		index++) {
+		char_buf[index] = *aml_address++;
+		ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "%c\n", char_buf[index]));
+	}
+
+
+	/* Valid name segment  */
+
+	if (index == 4) {
+		/* Found 4 valid characters */
+
+		char_buf[4] = '\0';
+
+		if (name_string) {
+			ACPI_STRCAT (name_string, char_buf);
+			ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
+				"Appended to - %s \n", name_string));
+		}
+		else {
+			ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
+				"No Name string - %s \n", char_buf));
+		}
+	}
+	else if (index == 0) {
+		/*
+		 * First character was not a valid name character,
+		 * so we are looking at something other than a name.
+		 */
+		ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+			"Leading character is not alpha: %02Xh (not a name)\n",
+			char_buf[0]));
+		status = AE_CTRL_PENDING;
+	}
+	else {
+		/* Segment started with one or more valid characters, but fewer than 4 */
+
+		status = AE_AML_BAD_NAME;
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Bad character %02x in name, at %p\n",
+			*aml_address, aml_address));
+	}
+
+	*in_aml_address = (u8 *) aml_address;
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_get_name_string
+ *
+ * PARAMETERS:  data_type           - Data type to be associated with this name
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get a name, including any prefixes.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_get_name_string (
+	acpi_object_type                data_type,
+	u8                              *in_aml_address,
+	char                            **out_name_string,
+	u32                             *out_name_length)
+{
+	acpi_status                     status = AE_OK;
+	u8                              *aml_address = in_aml_address;
+	char                            *name_string = NULL;
+	u32                             num_segments;
+	u32                             prefix_count = 0;
+	u8                              has_prefix = FALSE;
+
+
+	ACPI_FUNCTION_TRACE_PTR ("ex_get_name_string", aml_address);
+
+
+	if (ACPI_TYPE_LOCAL_REGION_FIELD == data_type  ||
+		ACPI_TYPE_LOCAL_BANK_FIELD == data_type    ||
+		ACPI_TYPE_LOCAL_INDEX_FIELD == data_type) {
+		/* Disallow prefixes for types associated with field_unit names */
+
+		name_string = acpi_ex_allocate_name_string (0, 1);
+		if (!name_string) {
+			status = AE_NO_MEMORY;
+		}
+		else {
+			status = acpi_ex_name_segment (&aml_address, name_string);
+		}
+	}
+	else {
+		/*
+		 * data_type is not a field name.
+		 * Examine first character of name for root or parent prefix operators
+		 */
+		switch (*aml_address) {
+		case AML_ROOT_PREFIX:
+
+			ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "root_prefix(\\) at %p\n", aml_address));
+
+			/*
+			 * Remember that we have a root_prefix --
+			 * see comment in acpi_ex_allocate_name_string()
+			 */
+			aml_address++;
+			prefix_count = ACPI_UINT32_MAX;
+			has_prefix = TRUE;
+			break;
+
+
+		case AML_PARENT_PREFIX:
+
+			/* Increment past possibly multiple parent prefixes */
+
+			do {
+				ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "parent_prefix (^) at %p\n", aml_address));
+
+				aml_address++;
+				prefix_count++;
+
+			} while (*aml_address == AML_PARENT_PREFIX);
+
+			has_prefix = TRUE;
+			break;
+
+
+		default:
+
+			/* Not a prefix character */
+
+			break;
+		}
+
+
+		/* Examine first character of name for name segment prefix operator */
+
+		switch (*aml_address) {
+		case AML_DUAL_NAME_PREFIX:
+
+			ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "dual_name_prefix at %p\n", aml_address));
+
+			aml_address++;
+			name_string = acpi_ex_allocate_name_string (prefix_count, 2);
+			if (!name_string) {
+				status = AE_NO_MEMORY;
+				break;
+			}
+
+			/* Indicate that we processed a prefix */
+
+			has_prefix = TRUE;
+
+			status = acpi_ex_name_segment (&aml_address, name_string);
+			if (ACPI_SUCCESS (status)) {
+				status = acpi_ex_name_segment (&aml_address, name_string);
+			}
+			break;
+
+
+		case AML_MULTI_NAME_PREFIX_OP:
+
+			ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "multi_name_prefix at %p\n", aml_address));
+
+			/* Fetch count of segments remaining in name path */
+
+			aml_address++;
+			num_segments = *aml_address;
+
+			name_string = acpi_ex_allocate_name_string (prefix_count, num_segments);
+			if (!name_string) {
+				status = AE_NO_MEMORY;
+				break;
+			}
+
+			/* Indicate that we processed a prefix */
+
+			aml_address++;
+			has_prefix = TRUE;
+
+			while (num_segments &&
+					(status = acpi_ex_name_segment (&aml_address, name_string)) == AE_OK) {
+				num_segments--;
+			}
+
+			break;
+
+
+		case 0:
+
+			/* null_name valid as of 8-12-98 ASL/AML Grammar Update */
+
+			if (prefix_count == ACPI_UINT32_MAX) {
+				ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "name_seg is \"\\\" followed by NULL\n"));
+			}
+
+			/* Consume the NULL byte */
+
+			aml_address++;
+			name_string = acpi_ex_allocate_name_string (prefix_count, 0);
+			if (!name_string) {
+				status = AE_NO_MEMORY;
+				break;
+			}
+
+			break;
+
+
+		default:
+
+			/* Name segment string */
+
+			name_string = acpi_ex_allocate_name_string (prefix_count, 1);
+			if (!name_string) {
+				status = AE_NO_MEMORY;
+				break;
+			}
+
+			status = acpi_ex_name_segment (&aml_address, name_string);
+			break;
+		}
+	}
+
+	if (AE_CTRL_PENDING == status && has_prefix) {
+		/* Ran out of segments after processing a prefix */
+
+		ACPI_REPORT_ERROR (
+			("ex_do_name: Malformed Name at %p\n", name_string));
+		status = AE_AML_BAD_NAME;
+	}
+
+	*out_name_string = name_string;
+	*out_name_length = (u32) (aml_address - in_aml_address);
+
+	return_ACPI_STATUS (status);
+}
+
+