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, 428 insertions, 0 deletions

diff --git a/drivers/acpi/resources/rscreate.c b/drivers/acpi/resources/rscreate.c
new file mode 100644
index 000000000000..a3a0cbfda68d
--- /dev/null
+++ b/drivers/acpi/resources/rscreate.c
@@ -0,0 +1,428 @@
+/*******************************************************************************
+ *
+ * Module Name: rscreate - Create resource lists/tables
+ *
+ ******************************************************************************/
+
+/*
+ * 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/acresrc.h>
+#include <acpi/amlcode.h>
+#include <acpi/acnamesp.h>
+
+#define _COMPONENT          ACPI_RESOURCES
+         ACPI_MODULE_NAME    ("rscreate")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_create_resource_list
+ *
+ * PARAMETERS:  byte_stream_buffer      - Pointer to the resource byte stream
+ *              output_buffer           - Pointer to the user's buffer
+ *
+ * RETURN:      Status  - AE_OK if okay, else a valid acpi_status code
+ *              If output_buffer is not large enough, output_buffer_length
+ *              indicates how large output_buffer should be, else it
+ *              indicates how may u8 elements of output_buffer are valid.
+ *
+ * DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method
+ *              execution and parses the stream to create a linked list
+ *              of device resources.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_create_resource_list (
+        union acpi_operand_object       *byte_stream_buffer,
+        struct acpi_buffer              *output_buffer)
+{
+
+        acpi_status                     status;
+        u8                              *byte_stream_start;
+        acpi_size                       list_size_needed = 0;
+        u32                             byte_stream_buffer_length;
+
+
+        ACPI_FUNCTION_TRACE ("rs_create_resource_list");
+
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "byte_stream_buffer = %p\n",
+                byte_stream_buffer));
+
+        /*
+         * Params already validated, so we don't re-validate here
+         */
+        byte_stream_buffer_length = byte_stream_buffer->buffer.length;
+        byte_stream_start = byte_stream_buffer->buffer.pointer;
+
+        /*
+         * Pass the byte_stream_buffer into a module that can calculate
+         * the buffer size needed for the linked list
+         */
+        status = acpi_rs_get_list_length (byte_stream_start, byte_stream_buffer_length,
+                         &list_size_needed);
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Status=%X list_size_needed=%X\n",
+                status, (u32) list_size_needed));
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /* Validate/Allocate/Clear caller buffer */
+
+        status = acpi_ut_initialize_buffer (output_buffer, list_size_needed);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /* Do the conversion */
+
+        status = acpi_rs_byte_stream_to_list (byte_stream_start, byte_stream_buffer_length,
+                          output_buffer->pointer);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "output_buffer %p Length %X\n",
+                        output_buffer->pointer, (u32) output_buffer->length));
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_create_pci_routing_table
+ *
+ * PARAMETERS:  package_object          - Pointer to an union acpi_operand_object
+ *                                        package
+ *              output_buffer           - Pointer to the user's buffer
+ *
+ * RETURN:      Status  AE_OK if okay, else a valid acpi_status code.
+ *              If the output_buffer is too small, the error will be
+ *              AE_BUFFER_OVERFLOW and output_buffer->Length will point
+ *              to the size buffer needed.
+ *
+ * DESCRIPTION: Takes the union acpi_operand_object    package and creates a
+ *              linked list of PCI interrupt descriptions
+ *
+ * NOTE: It is the caller's responsibility to ensure that the start of the
+ * output buffer is aligned properly (if necessary).
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_create_pci_routing_table (
+        union acpi_operand_object       *package_object,
+        struct acpi_buffer              *output_buffer)
+{
+        u8                              *buffer;
+        union acpi_operand_object       **top_object_list;
+        union acpi_operand_object       **sub_object_list;
+        union acpi_operand_object       *obj_desc;
+        acpi_size                       buffer_size_needed = 0;
+        u32                             number_of_elements;
+        u32                             index;
+        struct acpi_pci_routing_table   *user_prt;
+        struct acpi_namespace_node      *node;
+        acpi_status                     status;
+        struct acpi_buffer              path_buffer;
+
+
+        ACPI_FUNCTION_TRACE ("rs_create_pci_routing_table");
+
+
+        /* Params already validated, so we don't re-validate here */
+
+        /*
+         * Get the required buffer length
+         */
+        status = acpi_rs_get_pci_routing_table_length (package_object,
+                         &buffer_size_needed);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "buffer_size_needed = %X\n",
+                (u32) buffer_size_needed));
+
+        /* Validate/Allocate/Clear caller buffer */
+
+        status = acpi_ut_initialize_buffer (output_buffer, buffer_size_needed);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /*
+         * Loop through the ACPI_INTERNAL_OBJECTS - Each object
+         * should be a package that in turn contains an
+         * acpi_integer Address, a u8 Pin, a Name and a u8 source_index.
+         */
+        top_object_list  = package_object->package.elements;
+        number_of_elements = package_object->package.count;
+        buffer           = output_buffer->pointer;
+        user_prt         = ACPI_CAST_PTR (struct acpi_pci_routing_table, buffer);
+
+        for (index = 0; index < number_of_elements; index++) {
+                /*
+                 * Point user_prt past this current structure
+                 *
+                 * NOTE: On the first iteration, user_prt->Length will
+                 * be zero because we cleared the return buffer earlier
+                 */
+                buffer += user_prt->length;
+                user_prt = ACPI_CAST_PTR (struct acpi_pci_routing_table, buffer);
+
+                /*
+                 * Fill in the Length field with the information we have at this point.
+                 * The minus four is to subtract the size of the u8 Source[4] member
+                 * because it is added below.
+                 */
+                user_prt->length = (sizeof (struct acpi_pci_routing_table) - 4);
+
+                /*
+                 * Each element of the top-level package must also be a package
+                 */
+                if (ACPI_GET_OBJECT_TYPE (*top_object_list) != ACPI_TYPE_PACKAGE) {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "(PRT[%X]) Need sub-package, found %s\n",
+                                index, acpi_ut_get_object_type_name (*top_object_list)));
+                        return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+                }
+
+                /* Each sub-package must be of length 4 */
+
+                if ((*top_object_list)->package.count != 4) {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "(PRT[%X]) Need package of length 4, found length %d\n",
+                                index, (*top_object_list)->package.count));
+                        return_ACPI_STATUS (AE_AML_PACKAGE_LIMIT);
+                }
+
+                /*
+                 * Dereference the sub-package.
+                 * The sub_object_list will now point to an array of the four IRQ
+                 * elements: [Address, Pin, Source, source_index]
+                 */
+                sub_object_list = (*top_object_list)->package.elements;
+
+                /*
+                 * 1) First subobject: Dereference the PRT.Address
+                 */
+                obj_desc = sub_object_list[0];
+                if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_INTEGER) {
+                        user_prt->address = obj_desc->integer.value;
+                }
+                else {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "(PRT[%X].Address) Need Integer, found %s\n",
+                                index, acpi_ut_get_object_type_name (obj_desc)));
+                        return_ACPI_STATUS (AE_BAD_DATA);
+                }
+
+                /*
+                 * 2) Second subobject: Dereference the PRT.Pin
+                 */
+                obj_desc = sub_object_list[1];
+                if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_INTEGER) {
+                        user_prt->pin = (u32) obj_desc->integer.value;
+                }
+                else {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "(PRT[%X].Pin) Need Integer, found %s\n",
+                                index, acpi_ut_get_object_type_name (obj_desc)));
+                        return_ACPI_STATUS (AE_BAD_DATA);
+                }
+
+                /*
+                 * 3) Third subobject: Dereference the PRT.source_name
+                 */
+                obj_desc = sub_object_list[2];
+                switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+                case ACPI_TYPE_LOCAL_REFERENCE:
+
+                        if (obj_desc->reference.opcode != AML_INT_NAMEPATH_OP) {
+                                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                        "(PRT[%X].Source) Need name, found reference op %X\n",
+                                        index, obj_desc->reference.opcode));
+                                return_ACPI_STATUS (AE_BAD_DATA);
+                        }
+
+                        node = obj_desc->reference.node;
+
+                        /* Use *remaining* length of the buffer as max for pathname */
+
+                        path_buffer.length = output_buffer->length -
+                                           (u32) ((u8 *) user_prt->source -
+                                           (u8 *) output_buffer->pointer);
+                        path_buffer.pointer = user_prt->source;
+
+                        status = acpi_ns_handle_to_pathname ((acpi_handle) node, &path_buffer);
+
+                        user_prt->length += (u32) ACPI_STRLEN (user_prt->source) + 1; /* include null terminator */
+                        break;
+
+
+                case ACPI_TYPE_STRING:
+
+                        ACPI_STRCPY (user_prt->source, obj_desc->string.pointer);
+
+                        /* Add to the Length field the length of the string (add 1 for terminator) */
+
+                        user_prt->length += obj_desc->string.length + 1;
+                        break;
+
+
+                case ACPI_TYPE_INTEGER:
+                        /*
+                         * If this is a number, then the Source Name is NULL, since the
+                         * entire buffer was zeroed out, we can leave this alone.
+                         *
+                         * Add to the Length field the length of the u32 NULL
+                         */
+                        user_prt->length += sizeof (u32);
+                        break;
+
+
+                default:
+
+                   ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                           "(PRT[%X].Source) Need Ref/String/Integer, found %s\n",
+                                index, acpi_ut_get_object_type_name (obj_desc)));
+                   return_ACPI_STATUS (AE_BAD_DATA);
+                }
+
+                /* Now align the current length */
+
+                user_prt->length = (u32) ACPI_ROUND_UP_to_64_bITS (user_prt->length);
+
+                /*
+                 * 4) Fourth subobject: Dereference the PRT.source_index
+                 */
+                obj_desc = sub_object_list[3];
+                if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_INTEGER) {
+                        user_prt->source_index = (u32) obj_desc->integer.value;
+                }
+                else {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "(PRT[%X].source_index) Need Integer, found %s\n",
+                                index, acpi_ut_get_object_type_name (obj_desc)));
+                        return_ACPI_STATUS (AE_BAD_DATA);
+                }
+
+                /* Point to the next union acpi_operand_object in the top level package */
+
+                top_object_list++;
+        }
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "output_buffer %p Length %X\n",
+                        output_buffer->pointer, (u32) output_buffer->length));
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_create_byte_stream
+ *
+ * PARAMETERS:  linked_list_buffer      - Pointer to the resource linked list
+ *              output_buffer           - Pointer to the user's buffer
+ *
+ * RETURN:      Status  AE_OK if okay, else a valid acpi_status code.
+ *              If the output_buffer is too small, the error will be
+ *              AE_BUFFER_OVERFLOW and output_buffer->Length will point
+ *              to the size buffer needed.
+ *
+ * DESCRIPTION: Takes the linked list of device resources and
+ *              creates a bytestream to be used as input for the
+ *              _SRS control method.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_create_byte_stream (
+        struct acpi_resource            *linked_list_buffer,
+        struct acpi_buffer              *output_buffer)
+{
+        acpi_status                     status;
+        acpi_size                       byte_stream_size_needed = 0;
+
+
+        ACPI_FUNCTION_TRACE ("rs_create_byte_stream");
+
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "linked_list_buffer = %p\n",
+                linked_list_buffer));
+
+        /*
+         * Params already validated, so we don't re-validate here
+         *
+         * Pass the linked_list_buffer into a module that calculates
+         * the buffer size needed for the byte stream.
+         */
+        status = acpi_rs_get_byte_stream_length (linked_list_buffer,
+                         &byte_stream_size_needed);
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "byte_stream_size_needed=%X, %s\n",
+                (u32) byte_stream_size_needed, acpi_format_exception (status)));
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /* Validate/Allocate/Clear caller buffer */
+
+        status = acpi_ut_initialize_buffer (output_buffer, byte_stream_size_needed);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /* Do the conversion */
+
+        status = acpi_rs_list_to_byte_stream (linked_list_buffer, byte_stream_size_needed,
+                          output_buffer->pointer);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "output_buffer %p Length %X\n",
+                        output_buffer->pointer, (u32) output_buffer->length));
+        return_ACPI_STATUS (AE_OK);
+}
+