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path: root/drivers/acpi/acpica/rsmisc.c
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Diffstat (limited to 'drivers/acpi/acpica/rsmisc.c')
-rw-r--r--drivers/acpi/acpica/rsmisc.c561
1 files changed, 561 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/rsmisc.c b/drivers/acpi/acpica/rsmisc.c
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index 00000000000..2cd6e8cfaba
--- /dev/null
+++ b/drivers/acpi/acpica/rsmisc.c
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+/*******************************************************************************
+ *
+ * Module Name: rsmisc - Miscellaneous resource descriptors
+ *
+ ******************************************************************************/
+
+/*
+ * 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/acresrc.h>
+
+#define _COMPONENT ACPI_RESOURCES
+ACPI_MODULE_NAME("rsmisc")
+#define INIT_RESOURCE_TYPE(i) i->resource_offset
+#define INIT_RESOURCE_LENGTH(i) i->aml_offset
+#define INIT_TABLE_LENGTH(i) i->value
+#define COMPARE_OPCODE(i) i->resource_offset
+#define COMPARE_TARGET(i) i->aml_offset
+#define COMPARE_VALUE(i) i->value
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_convert_aml_to_resource
+ *
+ * PARAMETERS: Resource - Pointer to the resource descriptor
+ * Aml - Where the AML descriptor is returned
+ * Info - Pointer to appropriate conversion table
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Convert an external AML resource descriptor to the corresponding
+ * internal resource descriptor
+ *
+ ******************************************************************************/
+acpi_status
+acpi_rs_convert_aml_to_resource(struct acpi_resource *resource,
+ union aml_resource *aml,
+ struct acpi_rsconvert_info *info)
+{
+ acpi_rs_length aml_resource_length;
+ void *source;
+ void *destination;
+ char *target;
+ u8 count;
+ u8 flags_mode = FALSE;
+ u16 item_count = 0;
+ u16 temp16 = 0;
+
+ ACPI_FUNCTION_TRACE(rs_convert_aml_to_resource);
+
+ if (((acpi_size) resource) & 0x3) {
+
+ /* Each internal resource struct is expected to be 32-bit aligned */
+
+ ACPI_WARNING((AE_INFO,
+ "Misaligned resource pointer (get): %p Type %2.2X Len %X",
+ resource, resource->type, resource->length));
+ }
+
+ /* Extract the resource Length field (does not include header length) */
+
+ aml_resource_length = acpi_ut_get_resource_length(aml);
+
+ /*
+ * First table entry must be ACPI_RSC_INITxxx and must contain the
+ * table length (# of table entries)
+ */
+ count = INIT_TABLE_LENGTH(info);
+
+ while (count) {
+ /*
+ * Source is the external AML byte stream buffer,
+ * destination is the internal resource descriptor
+ */
+ source = ACPI_ADD_PTR(void, aml, info->aml_offset);
+ destination =
+ ACPI_ADD_PTR(void, resource, info->resource_offset);
+
+ switch (info->opcode) {
+ case ACPI_RSC_INITGET:
+ /*
+ * Get the resource type and the initial (minimum) length
+ */
+ ACPI_MEMSET(resource, 0, INIT_RESOURCE_LENGTH(info));
+ resource->type = INIT_RESOURCE_TYPE(info);
+ resource->length = INIT_RESOURCE_LENGTH(info);
+ break;
+
+ case ACPI_RSC_INITSET:
+ break;
+
+ case ACPI_RSC_FLAGINIT:
+
+ flags_mode = TRUE;
+ break;
+
+ case ACPI_RSC_1BITFLAG:
+ /*
+ * Mask and shift the flag bit
+ */
+ ACPI_SET8(destination) = (u8)
+ ((ACPI_GET8(source) >> info->value) & 0x01);
+ break;
+
+ case ACPI_RSC_2BITFLAG:
+ /*
+ * Mask and shift the flag bits
+ */
+ ACPI_SET8(destination) = (u8)
+ ((ACPI_GET8(source) >> info->value) & 0x03);
+ break;
+
+ case ACPI_RSC_COUNT:
+
+ item_count = ACPI_GET8(source);
+ ACPI_SET8(destination) = (u8) item_count;
+
+ resource->length = resource->length +
+ (info->value * (item_count - 1));
+ break;
+
+ case ACPI_RSC_COUNT16:
+
+ item_count = aml_resource_length;
+ ACPI_SET16(destination) = item_count;
+
+ resource->length = resource->length +
+ (info->value * (item_count - 1));
+ break;
+
+ case ACPI_RSC_LENGTH:
+
+ resource->length = resource->length + info->value;
+ break;
+
+ case ACPI_RSC_MOVE8:
+ case ACPI_RSC_MOVE16:
+ case ACPI_RSC_MOVE32:
+ case ACPI_RSC_MOVE64:
+ /*
+ * Raw data move. Use the Info value field unless item_count has
+ * been previously initialized via a COUNT opcode
+ */
+ if (info->value) {
+ item_count = info->value;
+ }
+ acpi_rs_move_data(destination, source, item_count,
+ info->opcode);
+ break;
+
+ case ACPI_RSC_SET8:
+
+ ACPI_MEMSET(destination, info->aml_offset, info->value);
+ break;
+
+ case ACPI_RSC_DATA8:
+
+ target = ACPI_ADD_PTR(char, resource, info->value);
+ ACPI_MEMCPY(destination, source, ACPI_GET16(target));
+ break;
+
+ case ACPI_RSC_ADDRESS:
+ /*
+ * Common handler for address descriptor flags
+ */
+ if (!acpi_rs_get_address_common(resource, aml)) {
+ return_ACPI_STATUS
+ (AE_AML_INVALID_RESOURCE_TYPE);
+ }
+ break;
+
+ case ACPI_RSC_SOURCE:
+ /*
+ * Optional resource_source (Index and String)
+ */
+ resource->length +=
+ acpi_rs_get_resource_source(aml_resource_length,
+ info->value,
+ destination, aml, NULL);
+ break;
+
+ case ACPI_RSC_SOURCEX:
+ /*
+ * Optional resource_source (Index and String). This is the more
+ * complicated case used by the Interrupt() macro
+ */
+ target =
+ ACPI_ADD_PTR(char, resource,
+ info->aml_offset + (item_count * 4));
+
+ resource->length +=
+ acpi_rs_get_resource_source(aml_resource_length,
+ (acpi_rs_length) (((item_count - 1) * sizeof(u32)) + info->value), destination, aml, target);
+ break;
+
+ case ACPI_RSC_BITMASK:
+ /*
+ * 8-bit encoded bitmask (DMA macro)
+ */
+ item_count =
+ acpi_rs_decode_bitmask(ACPI_GET8(source),
+ destination);
+ if (item_count) {
+ resource->length += (item_count - 1);
+ }
+
+ target = ACPI_ADD_PTR(char, resource, info->value);
+ ACPI_SET8(target) = (u8) item_count;
+ break;
+
+ case ACPI_RSC_BITMASK16:
+ /*
+ * 16-bit encoded bitmask (IRQ macro)
+ */
+ ACPI_MOVE_16_TO_16(&temp16, source);
+
+ item_count =
+ acpi_rs_decode_bitmask(temp16, destination);
+ if (item_count) {
+ resource->length += (item_count - 1);
+ }
+
+ target = ACPI_ADD_PTR(char, resource, info->value);
+ ACPI_SET8(target) = (u8) item_count;
+ break;
+
+ case ACPI_RSC_EXIT_NE:
+ /*
+ * Control - Exit conversion if not equal
+ */
+ switch (info->resource_offset) {
+ case ACPI_RSC_COMPARE_AML_LENGTH:
+ if (aml_resource_length != info->value) {
+ goto exit;
+ }
+ break;
+
+ case ACPI_RSC_COMPARE_VALUE:
+ if (ACPI_GET8(source) != info->value) {
+ goto exit;
+ }
+ break;
+
+ default:
+
+ ACPI_ERROR((AE_INFO,
+ "Invalid conversion sub-opcode"));
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+ }
+ break;
+
+ default:
+
+ ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+ }
+
+ count--;
+ info++;
+ }
+
+ exit:
+ if (!flags_mode) {
+
+ /* Round the resource struct length up to the next boundary (32 or 64) */
+
+ resource->length =
+ (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(resource->length);
+ }
+ return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_convert_resource_to_aml
+ *
+ * PARAMETERS: Resource - Pointer to the resource descriptor
+ * Aml - Where the AML descriptor is returned
+ * Info - Pointer to appropriate conversion table
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Convert an internal resource descriptor to the corresponding
+ * external AML resource descriptor.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_convert_resource_to_aml(struct acpi_resource *resource,
+ union aml_resource *aml,
+ struct acpi_rsconvert_info *info)
+{
+ void *source = NULL;
+ void *destination;
+ acpi_rsdesc_size aml_length = 0;
+ u8 count;
+ u16 temp16 = 0;
+ u16 item_count = 0;
+
+ ACPI_FUNCTION_TRACE(rs_convert_resource_to_aml);
+
+ /*
+ * First table entry must be ACPI_RSC_INITxxx and must contain the
+ * table length (# of table entries)
+ */
+ count = INIT_TABLE_LENGTH(info);
+
+ while (count) {
+ /*
+ * Source is the internal resource descriptor,
+ * destination is the external AML byte stream buffer
+ */
+ source = ACPI_ADD_PTR(void, resource, info->resource_offset);
+ destination = ACPI_ADD_PTR(void, aml, info->aml_offset);
+
+ switch (info->opcode) {
+ case ACPI_RSC_INITSET:
+
+ ACPI_MEMSET(aml, 0, INIT_RESOURCE_LENGTH(info));
+ aml_length = INIT_RESOURCE_LENGTH(info);
+ acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info),
+ aml_length, aml);
+ break;
+
+ case ACPI_RSC_INITGET:
+ break;
+
+ case ACPI_RSC_FLAGINIT:
+ /*
+ * Clear the flag byte
+ */
+ ACPI_SET8(destination) = 0;
+ break;
+
+ case ACPI_RSC_1BITFLAG:
+ /*
+ * Mask and shift the flag bit
+ */
+ ACPI_SET8(destination) |= (u8)
+ ((ACPI_GET8(source) & 0x01) << info->value);
+ break;
+
+ case ACPI_RSC_2BITFLAG:
+ /*
+ * Mask and shift the flag bits
+ */
+ ACPI_SET8(destination) |= (u8)
+ ((ACPI_GET8(source) & 0x03) << info->value);
+ break;
+
+ case ACPI_RSC_COUNT:
+
+ item_count = ACPI_GET8(source);
+ ACPI_SET8(destination) = (u8) item_count;
+
+ aml_length =
+ (u16) (aml_length +
+ (info->value * (item_count - 1)));
+ break;
+
+ case ACPI_RSC_COUNT16:
+
+ item_count = ACPI_GET16(source);
+ aml_length = (u16) (aml_length + item_count);
+ acpi_rs_set_resource_length(aml_length, aml);
+ break;
+
+ case ACPI_RSC_LENGTH:
+
+ acpi_rs_set_resource_length(info->value, aml);
+ break;
+
+ case ACPI_RSC_MOVE8:
+ case ACPI_RSC_MOVE16:
+ case ACPI_RSC_MOVE32:
+ case ACPI_RSC_MOVE64:
+
+ if (info->value) {
+ item_count = info->value;
+ }
+ acpi_rs_move_data(destination, source, item_count,
+ info->opcode);
+ break;
+
+ case ACPI_RSC_ADDRESS:
+
+ /* Set the Resource Type, General Flags, and Type-Specific Flags */
+
+ acpi_rs_set_address_common(aml, resource);
+ break;
+
+ case ACPI_RSC_SOURCEX:
+ /*
+ * Optional resource_source (Index and String)
+ */
+ aml_length =
+ acpi_rs_set_resource_source(aml, (acpi_rs_length)
+ aml_length, source);
+ acpi_rs_set_resource_length(aml_length, aml);
+ break;
+
+ case ACPI_RSC_SOURCE:
+ /*
+ * Optional resource_source (Index and String). This is the more
+ * complicated case used by the Interrupt() macro
+ */
+ aml_length =
+ acpi_rs_set_resource_source(aml, info->value,
+ source);
+ acpi_rs_set_resource_length(aml_length, aml);
+ break;
+
+ case ACPI_RSC_BITMASK:
+ /*
+ * 8-bit encoded bitmask (DMA macro)
+ */
+ ACPI_SET8(destination) = (u8)
+ acpi_rs_encode_bitmask(source,
+ *ACPI_ADD_PTR(u8, resource,
+ info->value));
+ break;
+
+ case ACPI_RSC_BITMASK16:
+ /*
+ * 16-bit encoded bitmask (IRQ macro)
+ */
+ temp16 = acpi_rs_encode_bitmask(source,
+ *ACPI_ADD_PTR(u8,
+ resource,
+ info->
+ value));
+ ACPI_MOVE_16_TO_16(destination, &temp16);
+ break;
+
+ case ACPI_RSC_EXIT_LE:
+ /*
+ * Control - Exit conversion if less than or equal
+ */
+ if (item_count <= info->value) {
+ goto exit;
+ }
+ break;
+
+ case ACPI_RSC_EXIT_NE:
+ /*
+ * Control - Exit conversion if not equal
+ */
+ switch (COMPARE_OPCODE(info)) {
+ case ACPI_RSC_COMPARE_VALUE:
+
+ if (*ACPI_ADD_PTR(u8, resource,
+ COMPARE_TARGET(info)) !=
+ COMPARE_VALUE(info)) {
+ goto exit;
+ }
+ break;
+
+ default:
+
+ ACPI_ERROR((AE_INFO,
+ "Invalid conversion sub-opcode"));
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+ }
+ break;
+
+ case ACPI_RSC_EXIT_EQ:
+ /*
+ * Control - Exit conversion if equal
+ */
+ if (*ACPI_ADD_PTR(u8, resource,
+ COMPARE_TARGET(info)) ==
+ COMPARE_VALUE(info)) {
+ goto exit;
+ }
+ break;
+
+ default:
+
+ ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+ }
+
+ count--;
+ info++;
+ }
+
+ exit:
+ return_ACPI_STATUS(AE_OK);
+}
+
+#if 0
+/* Previous resource validations */
+
+if (aml->ext_address64.revision_iD != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) {
+ return_ACPI_STATUS(AE_SUPPORT);
+}
+
+if (resource->data.start_dpf.performance_robustness >= 3) {
+ return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
+}
+
+if (((aml->irq.flags & 0x09) == 0x00) || ((aml->irq.flags & 0x09) == 0x09)) {
+ /*
+ * Only [active_high, edge_sensitive] or [active_low, level_sensitive]
+ * polarity/trigger interrupts are allowed (ACPI spec, section
+ * "IRQ Format"), so 0x00 and 0x09 are illegal.
+ */
+ ACPI_ERROR((AE_INFO,
+ "Invalid interrupt polarity/trigger in resource list, %X",
+ aml->irq.flags));
+ return_ACPI_STATUS(AE_BAD_DATA);
+}
+
+resource->data.extended_irq.interrupt_count = temp8;
+if (temp8 < 1) {
+
+ /* Must have at least one IRQ */
+
+ return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
+}
+
+if (resource->data.dma.transfer == 0x03) {
+ ACPI_ERROR((AE_INFO, "Invalid DMA.Transfer preference (3)"));
+ return_ACPI_STATUS(AE_BAD_DATA);
+}
+#endif
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