| /******************************************************************************* |
| * |
| * Module Name: rsmisc - Miscellaneous resource descriptors |
| * |
| ******************************************************************************/ |
| |
| /* |
| * 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> |
| |
| #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_get_resource"); |
| |
| if (((acpi_native_uint) resource) & 0x3) { |
| acpi_os_printf |
| ("**** GET: Misaligned resource pointer: %p Type %2.2X Len %X\n", |
| 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_os_printf |
| ("*** Invalid conversion sub-opcode\n"); |
| return_ACPI_STATUS(AE_BAD_PARAMETER); |
| } |
| break; |
| |
| default: |
| |
| acpi_os_printf("*** Invalid conversion opcode\n"); |
| return_ACPI_STATUS(AE_BAD_PARAMETER); |
| } |
| |
| count--; |
| info++; |
| } |
| |
| exit: |
| if (!flags_mode) { |
| /* Round the resource struct length up to the next 32-bit boundary */ |
| |
| resource->length = ACPI_ROUND_UP_to_32_bITS(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_os_printf |
| ("*** Invalid conversion sub-opcode\n"); |
| return_ACPI_STATUS(AE_BAD_PARAMETER); |
| } |
| break; |
| |
| default: |
| |
| acpi_os_printf("*** Invalid conversion opcode\n"); |
| 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_DEBUG_PRINT((ACPI_DB_ERROR, |
| "Invalid interrupt polarity/trigger in resource list, %X\n", |
| 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_DEBUG_PRINT((ACPI_DB_ERROR, |
| "Invalid DMA.Transfer preference (3)\n")); |
| return_ACPI_STATUS(AE_BAD_DATA); |
| } |
| #endif |