ACPICA: create acpica/ directory

also, delete sleep/ and delete ACPI_CFLAGS from Makefile

Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 436 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/exnames.c b/drivers/acpi/acpica/exnames.c
new file mode 100644
index 000000000000..12d3513531e1
--- /dev/null
+++ b/drivers/acpi/acpica/exnames.c
@@ -0,0 +1,436 @@
+
+/******************************************************************************
+ *
+ * Module Name: exnames - interpreter/scanner name load/execute
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2008, Intel Corp.
+ * 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/accommon.h>
+#include <acpi/acinterp.h>
+#include <acpi/amlcode.h>
+
+#define _COMPONENT          ACPI_EXECUTER
+ACPI_MODULE_NAME("exnames")
+
+/* Local prototypes */
+static char *acpi_ex_allocate_name_string(u32 prefix_count, u32 num_name_segs);
+
+static acpi_status
+acpi_ex_name_segment(u8 ** in_aml_address, char *name_string);
+
+/*******************************************************************************
+ *
+ * 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.
+ *
+ ******************************************************************************/
+
+static 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_ALLOCATE(size_needed);
+        if (!name_string) {
+                ACPI_ERROR((AE_INFO,
+                            "Could not allocate size %d", 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:  in_aml_address  - Pointer to the name in the AML code
+ *              name_string     - Where to return the name. The name is appended
+ *                                to any existing string to form a namepath
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Extract an ACPI name (4 bytes) from the AML byte stream
+ *
+ ******************************************************************************/
+
+static 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_ERROR((AE_INFO, "Invalid leading digit: %c", 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_char(*aml_address, 0)); 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
+                 * the required 4
+                 */
+                status = AE_AML_BAD_NAME;
+                ACPI_ERROR((AE_INFO,
+                            "Bad character %02x in name, at %p",
+                            *aml_address, aml_address));
+        }
+
+        *in_aml_address = ACPI_CAST_PTR(u8, aml_address);
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_get_name_string
+ *
+ * PARAMETERS:  data_type           - Object type to be associated with this
+ *                                    name
+ *              in_aml_address      - Pointer to the namestring in the AML code
+ *              out_name_string     - Where the namestring is returned
+ *              out_name_length     - Length of the returned string
+ *
+ * RETURN:      Status, namestring and length
+ *
+ * DESCRIPTION: Extract a full namepath from the AML byte stream,
+ *              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,
+                                          "RootPrefix(\\) 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,
+                                                  "ParentPrefix (^) 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,
+                                          "DualNamePrefix 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,
+                                          "MultiNamePrefix 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,
+                                                  "NameSeg 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_ERROR((AE_INFO, "Malformed Name at %p", name_string));
+                status = AE_AML_BAD_NAME;
+        }
+
+        if (ACPI_FAILURE(status)) {
+                if (name_string) {
+                        ACPI_FREE(name_string);
+                }
+                return_ACPI_STATUS(status);
+        }
+
+        *out_name_string = name_string;
+        *out_name_length = (u32) (aml_address - in_aml_address);
+
+        return_ACPI_STATUS(status);
+}