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 000000000000..7911c533c265
--- /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);
+}
+
+