1 files changed, 616 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/utresrc.c b/drivers/acpi/acpica/utresrc.c
new file mode 100644
index 000000000000..0755c5cdbe18
--- /dev/null
+++ b/drivers/acpi/acpica/utresrc.c
@@ -0,0 +1,616 @@
+/*******************************************************************************
+ *
+ * Module Name: utresrc - Resource management utilities
+ *
+ ******************************************************************************/
+
+/*
+ * 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/amlresrc.h>
+
+#define _COMPONENT          ACPI_UTILITIES
+ACPI_MODULE_NAME("utresrc")
+#if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUGGER)
+/*
+ * Strings used to decode resource descriptors.
+ * Used by both the disasssembler and the debugger resource dump routines
+ */
+const char *acpi_gbl_bm_decode[] = {
+        "NotBusMaster",
+        "BusMaster"
+};
+
+const char *acpi_gbl_config_decode[] = {
+        "0 - Good Configuration",
+        "1 - Acceptable Configuration",
+        "2 - Suboptimal Configuration",
+        "3 - ***Invalid Configuration***",
+};
+
+const char *acpi_gbl_consume_decode[] = {
+        "ResourceProducer",
+        "ResourceConsumer"
+};
+
+const char *acpi_gbl_dec_decode[] = {
+        "PosDecode",
+        "SubDecode"
+};
+
+const char *acpi_gbl_he_decode[] = {
+        "Level",
+        "Edge"
+};
+
+const char *acpi_gbl_io_decode[] = {
+        "Decode10",
+        "Decode16"
+};
+
+const char *acpi_gbl_ll_decode[] = {
+        "ActiveHigh",
+        "ActiveLow"
+};
+
+const char *acpi_gbl_max_decode[] = {
+        "MaxNotFixed",
+        "MaxFixed"
+};
+
+const char *acpi_gbl_mem_decode[] = {
+        "NonCacheable",
+        "Cacheable",
+        "WriteCombining",
+        "Prefetchable"
+};
+
+const char *acpi_gbl_min_decode[] = {
+        "MinNotFixed",
+        "MinFixed"
+};
+
+const char *acpi_gbl_mtp_decode[] = {
+        "AddressRangeMemory",
+        "AddressRangeReserved",
+        "AddressRangeACPI",
+        "AddressRangeNVS"
+};
+
+const char *acpi_gbl_rng_decode[] = {
+        "InvalidRanges",
+        "NonISAOnlyRanges",
+        "ISAOnlyRanges",
+        "EntireRange"
+};
+
+const char *acpi_gbl_rw_decode[] = {
+        "ReadOnly",
+        "ReadWrite"
+};
+
+const char *acpi_gbl_shr_decode[] = {
+        "Exclusive",
+        "Shared"
+};
+
+const char *acpi_gbl_siz_decode[] = {
+        "Transfer8",
+        "Transfer8_16",
+        "Transfer16",
+        "InvalidSize"
+};
+
+const char *acpi_gbl_trs_decode[] = {
+        "DenseTranslation",
+        "SparseTranslation"
+};
+
+const char *acpi_gbl_ttp_decode[] = {
+        "TypeStatic",
+        "TypeTranslation"
+};
+
+const char *acpi_gbl_typ_decode[] = {
+        "Compatibility",
+        "TypeA",
+        "TypeB",
+        "TypeF"
+};
+
+#endif
+
+/*
+ * Base sizes of the raw AML resource descriptors, indexed by resource type.
+ * Zero indicates a reserved (and therefore invalid) resource type.
+ */
+const u8 acpi_gbl_resource_aml_sizes[] = {
+        /* Small descriptors */
+
+        0,
+        0,
+        0,
+        0,
+        ACPI_AML_SIZE_SMALL(struct aml_resource_irq),
+        ACPI_AML_SIZE_SMALL(struct aml_resource_dma),
+        ACPI_AML_SIZE_SMALL(struct aml_resource_start_dependent),
+        ACPI_AML_SIZE_SMALL(struct aml_resource_end_dependent),
+        ACPI_AML_SIZE_SMALL(struct aml_resource_io),
+        ACPI_AML_SIZE_SMALL(struct aml_resource_fixed_io),
+        0,
+        0,
+        0,
+        0,
+        ACPI_AML_SIZE_SMALL(struct aml_resource_vendor_small),
+        ACPI_AML_SIZE_SMALL(struct aml_resource_end_tag),
+
+        /* Large descriptors */
+
+        0,
+        ACPI_AML_SIZE_LARGE(struct aml_resource_memory24),
+        ACPI_AML_SIZE_LARGE(struct aml_resource_generic_register),
+        0,
+        ACPI_AML_SIZE_LARGE(struct aml_resource_vendor_large),
+        ACPI_AML_SIZE_LARGE(struct aml_resource_memory32),
+        ACPI_AML_SIZE_LARGE(struct aml_resource_fixed_memory32),
+        ACPI_AML_SIZE_LARGE(struct aml_resource_address32),
+        ACPI_AML_SIZE_LARGE(struct aml_resource_address16),
+        ACPI_AML_SIZE_LARGE(struct aml_resource_extended_irq),
+        ACPI_AML_SIZE_LARGE(struct aml_resource_address64),
+        ACPI_AML_SIZE_LARGE(struct aml_resource_extended_address64)
+};
+
+/*
+ * Resource types, used to validate the resource length field.
+ * The length of fixed-length types must match exactly, variable
+ * lengths must meet the minimum required length, etc.
+ * Zero indicates a reserved (and therefore invalid) resource type.
+ */
+static const u8 acpi_gbl_resource_types[] = {
+        /* Small descriptors */
+
+        0,
+        0,
+        0,
+        0,
+        ACPI_SMALL_VARIABLE_LENGTH,
+        ACPI_FIXED_LENGTH,
+        ACPI_SMALL_VARIABLE_LENGTH,
+        ACPI_FIXED_LENGTH,
+        ACPI_FIXED_LENGTH,
+        ACPI_FIXED_LENGTH,
+        0,
+        0,
+        0,
+        0,
+        ACPI_VARIABLE_LENGTH,
+        ACPI_FIXED_LENGTH,
+
+        /* Large descriptors */
+
+        0,
+        ACPI_FIXED_LENGTH,
+        ACPI_FIXED_LENGTH,
+        0,
+        ACPI_VARIABLE_LENGTH,
+        ACPI_FIXED_LENGTH,
+        ACPI_FIXED_LENGTH,
+        ACPI_VARIABLE_LENGTH,
+        ACPI_VARIABLE_LENGTH,
+        ACPI_VARIABLE_LENGTH,
+        ACPI_VARIABLE_LENGTH,
+        ACPI_FIXED_LENGTH
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_walk_aml_resources
+ *
+ * PARAMETERS:  Aml             - Pointer to the raw AML resource template
+ *              aml_length      - Length of the entire template
+ *              user_function   - Called once for each descriptor found. If
+ *                                NULL, a pointer to the end_tag is returned
+ *              Context         - Passed to user_function
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Walk a raw AML resource list(buffer). User function called
+ *              once for each resource found.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_walk_aml_resources(u8 * aml,
+                           acpi_size aml_length,
+                           acpi_walk_aml_callback user_function, void **context)
+{
+        acpi_status status;
+        u8 *end_aml;
+        u8 resource_index;
+        u32 length;
+        u32 offset = 0;
+
+        ACPI_FUNCTION_TRACE(ut_walk_aml_resources);
+
+        /* The absolute minimum resource template is one end_tag descriptor */
+
+        if (aml_length < sizeof(struct aml_resource_end_tag)) {
+                return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
+        }
+
+        /* Point to the end of the resource template buffer */
+
+        end_aml = aml + aml_length;
+
+        /* Walk the byte list, abort on any invalid descriptor type or length */
+
+        while (aml < end_aml) {
+
+                /* Validate the Resource Type and Resource Length */
+
+                status = acpi_ut_validate_resource(aml, &resource_index);
+                if (ACPI_FAILURE(status)) {
+                        return_ACPI_STATUS(status);
+                }
+
+                /* Get the length of this descriptor */
+
+                length = acpi_ut_get_descriptor_length(aml);
+
+                /* Invoke the user function */
+
+                if (user_function) {
+                        status =
+                            user_function(aml, length, offset, resource_index,
+                                          context);
+                        if (ACPI_FAILURE(status)) {
+                                return (status);
+                        }
+                }
+
+                /* An end_tag descriptor terminates this resource template */
+
+                if (acpi_ut_get_resource_type(aml) ==
+                    ACPI_RESOURCE_NAME_END_TAG) {
+                        /*
+                         * There must be at least one more byte in the buffer for
+                         * the 2nd byte of the end_tag
+                         */
+                        if ((aml + 1) >= end_aml) {
+                                return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
+                        }
+
+                        /* Return the pointer to the end_tag if requested */
+
+                        if (!user_function) {
+                                *context = aml;
+                        }
+
+                        /* Normal exit */
+
+                        return_ACPI_STATUS(AE_OK);
+                }
+
+                aml += length;
+                offset += length;
+        }
+
+        /* Did not find an end_tag descriptor */
+
+        return (AE_AML_NO_RESOURCE_END_TAG);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_validate_resource
+ *
+ * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
+ *              return_index    - Where the resource index is returned. NULL
+ *                                if the index is not required.
+ *
+ * RETURN:      Status, and optionally the Index into the global resource tables
+ *
+ * DESCRIPTION: Validate an AML resource descriptor by checking the Resource
+ *              Type and Resource Length. Returns an index into the global
+ *              resource information/dispatch tables for later use.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_validate_resource(void *aml, u8 * return_index)
+{
+        u8 resource_type;
+        u8 resource_index;
+        acpi_rs_length resource_length;
+        acpi_rs_length minimum_resource_length;
+
+        ACPI_FUNCTION_ENTRY();
+
+        /*
+         * 1) Validate the resource_type field (Byte 0)
+         */
+        resource_type = ACPI_GET8(aml);
+
+        /*
+         * Byte 0 contains the descriptor name (Resource Type)
+         * Examine the large/small bit in the resource header
+         */
+        if (resource_type & ACPI_RESOURCE_NAME_LARGE) {
+
+                /* Verify the large resource type (name) against the max */
+
+                if (resource_type > ACPI_RESOURCE_NAME_LARGE_MAX) {
+                        return (AE_AML_INVALID_RESOURCE_TYPE);
+                }
+
+                /*
+                 * Large Resource Type -- bits 6:0 contain the name
+                 * Translate range 0x80-0x8B to index range 0x10-0x1B
+                 */
+                resource_index = (u8) (resource_type - 0x70);
+        } else {
+                /*
+                 * Small Resource Type -- bits 6:3 contain the name
+                 * Shift range to index range 0x00-0x0F
+                 */
+                resource_index = (u8)
+                    ((resource_type & ACPI_RESOURCE_NAME_SMALL_MASK) >> 3);
+        }
+
+        /* Check validity of the resource type, zero indicates name is invalid */
+
+        if (!acpi_gbl_resource_types[resource_index]) {
+                return (AE_AML_INVALID_RESOURCE_TYPE);
+        }
+
+        /*
+         * 2) Validate the resource_length field. This ensures that the length
+         *    is at least reasonable, and guarantees that it is non-zero.
+         */
+        resource_length = acpi_ut_get_resource_length(aml);
+        minimum_resource_length = acpi_gbl_resource_aml_sizes[resource_index];
+
+        /* Validate based upon the type of resource - fixed length or variable */
+
+        switch (acpi_gbl_resource_types[resource_index]) {
+        case ACPI_FIXED_LENGTH:
+
+                /* Fixed length resource, length must match exactly */
+
+                if (resource_length != minimum_resource_length) {
+                        return (AE_AML_BAD_RESOURCE_LENGTH);
+                }
+                break;
+
+        case ACPI_VARIABLE_LENGTH:
+
+                /* Variable length resource, length must be at least the minimum */
+
+                if (resource_length < minimum_resource_length) {
+                        return (AE_AML_BAD_RESOURCE_LENGTH);
+                }
+                break;
+
+        case ACPI_SMALL_VARIABLE_LENGTH:
+
+                /* Small variable length resource, length can be (Min) or (Min-1) */
+
+                if ((resource_length > minimum_resource_length) ||
+                    (resource_length < (minimum_resource_length - 1))) {
+                        return (AE_AML_BAD_RESOURCE_LENGTH);
+                }
+                break;
+
+        default:
+
+                /* Shouldn't happen (because of validation earlier), but be sure */
+
+                return (AE_AML_INVALID_RESOURCE_TYPE);
+        }
+
+        /* Optionally return the resource table index */
+
+        if (return_index) {
+                *return_index = resource_index;
+        }
+
+        return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_resource_type
+ *
+ * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
+ *
+ * RETURN:      The Resource Type with no extraneous bits (except the
+ *              Large/Small descriptor bit -- this is left alone)
+ *
+ * DESCRIPTION: Extract the Resource Type/Name from the first byte of
+ *              a resource descriptor.
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_get_resource_type(void *aml)
+{
+        ACPI_FUNCTION_ENTRY();
+
+        /*
+         * Byte 0 contains the descriptor name (Resource Type)
+         * Examine the large/small bit in the resource header
+         */
+        if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
+
+                /* Large Resource Type -- bits 6:0 contain the name */
+
+                return (ACPI_GET8(aml));
+        } else {
+                /* Small Resource Type -- bits 6:3 contain the name */
+
+                return ((u8) (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_SMALL_MASK));
+        }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_resource_length
+ *
+ * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
+ *
+ * RETURN:      Byte Length
+ *
+ * DESCRIPTION: Get the "Resource Length" of a raw AML descriptor. By
+ *              definition, this does not include the size of the descriptor
+ *              header or the length field itself.
+ *
+ ******************************************************************************/
+
+u16 acpi_ut_get_resource_length(void *aml)
+{
+        acpi_rs_length resource_length;
+
+        ACPI_FUNCTION_ENTRY();
+
+        /*
+         * Byte 0 contains the descriptor name (Resource Type)
+         * Examine the large/small bit in the resource header
+         */
+        if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
+
+                /* Large Resource type -- bytes 1-2 contain the 16-bit length */
+
+                ACPI_MOVE_16_TO_16(&resource_length, ACPI_ADD_PTR(u8, aml, 1));
+
+        } else {
+                /* Small Resource type -- bits 2:0 of byte 0 contain the length */
+
+                resource_length = (u16) (ACPI_GET8(aml) &
+                                         ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
+        }
+
+        return (resource_length);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_resource_header_length
+ *
+ * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
+ *
+ * RETURN:      Length of the AML header (depends on large/small descriptor)
+ *
+ * DESCRIPTION: Get the length of the header for this resource.
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_get_resource_header_length(void *aml)
+{
+        ACPI_FUNCTION_ENTRY();
+
+        /* Examine the large/small bit in the resource header */
+
+        if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
+                return (sizeof(struct aml_resource_large_header));
+        } else {
+                return (sizeof(struct aml_resource_small_header));
+        }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_descriptor_length
+ *
+ * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
+ *
+ * RETURN:      Byte length
+ *
+ * DESCRIPTION: Get the total byte length of a raw AML descriptor, including the
+ *              length of the descriptor header and the length field itself.
+ *              Used to walk descriptor lists.
+ *
+ ******************************************************************************/
+
+u32 acpi_ut_get_descriptor_length(void *aml)
+{
+        ACPI_FUNCTION_ENTRY();
+
+        /*
+         * Get the Resource Length (does not include header length) and add
+         * the header length (depends on if this is a small or large resource)
+         */
+        return (acpi_ut_get_resource_length(aml) +
+                acpi_ut_get_resource_header_length(aml));
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_resource_end_tag
+ *
+ * PARAMETERS:  obj_desc        - The resource template buffer object
+ *              end_tag         - Where the pointer to the end_tag is returned
+ *
+ * RETURN:      Status, pointer to the end tag
+ *
+ * DESCRIPTION: Find the end_tag resource descriptor in an AML resource template
+ *              Note: allows a buffer length of zero.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_get_resource_end_tag(union acpi_operand_object * obj_desc,
+                             u8 ** end_tag)
+{
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(ut_get_resource_end_tag);
+
+        /* Allow a buffer length of zero */
+
+        if (!obj_desc->buffer.length) {
+                *end_tag = obj_desc->buffer.pointer;
+                return_ACPI_STATUS(AE_OK);
+        }
+
+        /* Validate the template and get a pointer to the end_tag */
+
+        status = acpi_ut_walk_aml_resources(obj_desc->buffer.pointer,
+                                            obj_desc->buffer.length, NULL,
+                                            (void **)end_tag);
+
+        return_ACPI_STATUS(status);
+}