/******************************************************************************* * * Module Name: rsaddr - Address resource descriptors (16/32/64) * ******************************************************************************/ /* * 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 #include #define _COMPONENT ACPI_RESOURCES ACPI_MODULE_NAME("rsaddr") /* Local prototypes */ static void acpi_rs_decode_general_flags(union acpi_resource_data *resource, u8 flags); static u8 acpi_rs_encode_general_flags(union acpi_resource_data *resource); static void acpi_rs_decode_specific_flags(union acpi_resource_data *resource, u8 flags); static u8 acpi_rs_encode_specific_flags(union acpi_resource_data *resource); /******************************************************************************* * * FUNCTION: acpi_rs_decode_general_flags * * PARAMETERS: Resource - Address resource data struct * Flags - Actual flag byte * * RETURN: Decoded flag bits in resource struct * * DESCRIPTION: Decode a general flag byte to an address resource struct * ******************************************************************************/ static void acpi_rs_decode_general_flags(union acpi_resource_data *resource, u8 flags) { ACPI_FUNCTION_ENTRY(); /* Producer / Consumer - flag bit[0] */ resource->address.producer_consumer = (u32) (flags & 0x01); /* Decode (_DEC) - flag bit[1] */ resource->address.decode = (u32) ((flags >> 1) & 0x01); /* Min Address Fixed (_MIF) - flag bit[2] */ resource->address.min_address_fixed = (u32) ((flags >> 2) & 0x01); /* Max Address Fixed (_MAF) - flag bit[3] */ resource->address.max_address_fixed = (u32) ((flags >> 3) & 0x01); } /******************************************************************************* * * FUNCTION: acpi_rs_encode_general_flags * * PARAMETERS: Resource - Address resource data struct * * RETURN: Encoded general flag byte * * DESCRIPTION: Construct a general flag byte from an address resource struct * ******************************************************************************/ static u8 acpi_rs_encode_general_flags(union acpi_resource_data *resource) { u8 flags; ACPI_FUNCTION_ENTRY(); /* Producer / Consumer - flag bit[0] */ flags = (u8) (resource->address.producer_consumer & 0x01); /* Decode (_DEC) - flag bit[1] */ flags |= (u8) ((resource->address.decode & 0x01) << 1); /* Min Address Fixed (_MIF) - flag bit[2] */ flags |= (u8) ((resource->address.min_address_fixed & 0x01) << 2); /* Max Address Fixed (_MAF) - flag bit[3] */ flags |= (u8) ((resource->address.max_address_fixed & 0x01) << 3); return (flags); } /******************************************************************************* * * FUNCTION: acpi_rs_decode_specific_flags * * PARAMETERS: Resource - Address resource data struct * Flags - Actual flag byte * * RETURN: Decoded flag bits in attribute struct * * DESCRIPTION: Decode a type-specific flag byte to an attribute struct. * Type-specific flags are only defined for the Memory and IO * resource types. * ******************************************************************************/ static void acpi_rs_decode_specific_flags(union acpi_resource_data *resource, u8 flags) { ACPI_FUNCTION_ENTRY(); if (resource->address.resource_type == ACPI_MEMORY_RANGE) { /* Write Status (_RW) - flag bit[0] */ resource->address.attribute.memory.read_write_attribute = (u16) (flags & 0x01); /* Memory Attributes (_MEM) - flag bits[2:1] */ resource->address.attribute.memory.cache_attribute = (u16) ((flags >> 1) & 0x03); } else if (resource->address.resource_type == ACPI_IO_RANGE) { /* Ranges (_RNG) - flag bits[1:0] */ resource->address.attribute.io.range_attribute = (u16) (flags & 0x03); /* Translations (_TTP and _TRS) - flag bits[5:4] */ resource->address.attribute.io.translation_attribute = (u16) ((flags >> 4) & 0x03); } } /******************************************************************************* * * FUNCTION: acpi_rs_encode_specific_flags * * PARAMETERS: Resource - Address resource data struct * * RETURN: Encoded type-specific flag byte * * DESCRIPTION: Construct a type-specific flag byte from an attribute struct. * Type-specific flags are only defined for the Memory and IO * resource types. * ******************************************************************************/ static u8 acpi_rs_encode_specific_flags(union acpi_resource_data *resource) { u8 flags = 0; ACPI_FUNCTION_ENTRY(); if (resource->address.resource_type == ACPI_MEMORY_RANGE) { /* Write Status (_RW) - flag bit[0] */ flags = (u8) (resource->address.attribute.memory. read_write_attribute & 0x01); /* Memory Attributes (_MEM) - flag bits[2:1] */ flags |= (u8) ((resource->address.attribute.memory. cache_attribute & 0x03) << 1); } else if (resource->address.resource_type == ACPI_IO_RANGE) { /* Ranges (_RNG) - flag bits[1:0] */ flags = (u8) (resource->address.attribute.io.range_attribute & 0x03); /* Translations (_TTP and _TRS) - flag bits[5:4] */ flags |= (u8) ((resource->address.attribute.io. translation_attribute & 0x03) << 4); } return (flags); } /******************************************************************************* * * FUNCTION: acpi_rs_address16_resource * * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte * stream * bytes_consumed - Pointer to where the number of bytes * consumed the byte_stream_buffer is * returned * output_buffer - Pointer to the return data buffer * structure_size - Pointer to where the number of bytes * in the return data struct is returned * * RETURN: Status * * DESCRIPTION: Take the resource byte stream and fill out the appropriate * structure pointed to by the output_buffer. Return the * number of bytes consumed from the byte stream. * ******************************************************************************/ acpi_status acpi_rs_address16_resource(u8 * byte_stream_buffer, acpi_size * bytes_consumed, u8 ** output_buffer, acpi_size * structure_size) { u32 index; u16 temp16; u8 temp8; u8 *temp_ptr; u8 *buffer = byte_stream_buffer; struct acpi_resource *output_struct = (void *)*output_buffer; acpi_size struct_size = ACPI_SIZEOF_RESOURCE(struct acpi_resource_address16); ACPI_FUNCTION_TRACE("rs_address16_resource"); /* Get the Descriptor Length field */ buffer += 1; ACPI_MOVE_16_TO_16(&temp16, buffer); /* Validate minimum descriptor length */ if (temp16 < 13) { return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH); } *bytes_consumed = temp16 + 3; output_struct->id = ACPI_RSTYPE_ADDRESS16; /* Get the Resource Type (Byte3) */ buffer += 2; temp8 = *buffer; /* Values 0-2 and 0xC0-0xFF are valid */ if ((temp8 > 2) && (temp8 < 0xC0)) { return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE); } output_struct->data.address16.resource_type = temp8; /* Get the General Flags (Byte4) */ buffer += 1; acpi_rs_decode_general_flags(&output_struct->data, *buffer); /* Get the Type Specific Flags (Byte5) */ buffer += 1; acpi_rs_decode_specific_flags(&output_struct->data, *buffer); /* Get Granularity (Bytes 6-7) */ buffer += 1; ACPI_MOVE_16_TO_32(&output_struct->data.address16.granularity, buffer); /* Get min_address_range (Bytes 8-9) */ buffer += 2; ACPI_MOVE_16_TO_32(&output_struct->data.address16.min_address_range, buffer); /* Get max_address_range (Bytes 10-11) */ buffer += 2; ACPI_MOVE_16_TO_32(&output_struct->data.address16.max_address_range, buffer); /* Get address_translation_offset (Bytes 12-13) */ buffer += 2; ACPI_MOVE_16_TO_32(&output_struct->data.address16. address_translation_offset, buffer); /* Get address_length (Bytes 14-15) */ buffer += 2; ACPI_MOVE_16_TO_32(&output_struct->data.address16.address_length, buffer); /* Resource Source Index (if present) */ buffer += 2; /* * This will leave us pointing to the Resource Source Index * If it is present, then save it off and calculate the * pointer to where the null terminated string goes: * Each Interrupt takes 32-bits + the 5 bytes of the * stream that are default. * * Note: Some resource descriptors will have an additional null, so * we add 1 to the length. */ if (*bytes_consumed > (16 + 1)) { /* Dereference the Index */ output_struct->data.address16.resource_source.index = (u32) * buffer; /* Point to the String */ buffer += 1; /* Point the String pointer to the end of this structure */ output_struct->data.address16.resource_source.string_ptr = (char *)((u8 *) output_struct + struct_size); temp_ptr = (u8 *) output_struct->data.address16.resource_source.string_ptr; /* Copy the resource_source string into the buffer */ index = 0; while (*buffer) { *temp_ptr = *buffer; temp_ptr++; buffer++; index++; } /* Add the terminating null and set the string length */ *temp_ptr = 0; output_struct->data.address16.resource_source.string_length = index + 1; /* * In order for the struct_size to fall on a 32-bit boundary, * calculate the length of the string and expand the * struct_size to the next 32-bit boundary. */ temp8 = (u8) (index + 1); struct_size += ACPI_ROUND_UP_to_32_bITS(temp8); } else { output_struct->data.address16.resource_source.index = 0; output_struct->data.address16.resource_source.string_length = 0; output_struct->data.address16.resource_source.string_ptr = NULL; } /* Set the Length parameter */ output_struct->length = (u32) struct_size; /* Return the final size of the structure */ *structure_size = struct_size; return_ACPI_STATUS(AE_OK); } /******************************************************************************* * * FUNCTION: acpi_rs_address16_stream * * PARAMETERS: linked_list - Pointer to the resource linked list * output_buffer - Pointer to the user's return buffer * bytes_consumed - Pointer to where the number of bytes * used in the output_buffer is returned * * RETURN: Status * * DESCRIPTION: Take the linked list resource structure and fills in the * the appropriate bytes in a byte stream * ******************************************************************************/ acpi_status acpi_rs_address16_stream(struct acpi_resource *linked_list, u8 ** output_buffer, acpi_size * bytes_consumed) { u8 *buffer = *output_buffer; u8 *length_field; acpi_size actual_bytes; ACPI_FUNCTION_TRACE("rs_address16_stream"); /* Set the Descriptor Type field */ *buffer = ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE; buffer += 1; /* Save a pointer to the Length field - to be filled in later */ length_field = buffer; buffer += 2; /* Set the Resource Type (Memory, Io, bus_number) */ *buffer = (u8) (linked_list->data.address16.resource_type & 0x03); buffer += 1; /* Set the general flags */ *buffer = acpi_rs_encode_general_flags(&linked_list->data); buffer += 1; /* Set the type specific flags */ *buffer = acpi_rs_encode_specific_flags(&linked_list->data); buffer += 1; /* Set the address space granularity */ ACPI_MOVE_32_TO_16(buffer, &linked_list->data.address16.granularity); buffer += 2; /* Set the address range minimum */ ACPI_MOVE_32_TO_16(buffer, &linked_list->data.address16.min_address_range); buffer += 2; /* Set the address range maximum */ ACPI_MOVE_32_TO_16(buffer, &linked_list->data.address16.max_address_range); buffer += 2; /* Set the address translation offset */ ACPI_MOVE_32_TO_16(buffer, &linked_list->data.address16. address_translation_offset); buffer += 2; /* Set the address length */ ACPI_MOVE_32_TO_16(buffer, &linked_list->data.address16.address_length); buffer += 2; /* Resource Source Index and Resource Source are optional */ if (linked_list->data.address16.resource_source.string_length) { *buffer = (u8) linked_list->data.address16.resource_source.index; buffer += 1; /* Copy the resource_source string */ ACPI_STRCPY((char *)buffer, linked_list->data.address16.resource_source. string_ptr); /* * Buffer needs to be set to the length of the string + one for the * terminating null */ buffer += (acpi_size) (ACPI_STRLEN (linked_list->data.address16.resource_source. string_ptr) + 1); } /* Return the number of bytes consumed in this operation */ actual_bytes = ACPI_PTR_DIFF(buffer, *output_buffer); *bytes_consumed = actual_bytes; /* * Set the length field to the number of bytes consumed * minus the header size (3 bytes) */ actual_bytes -= 3; ACPI_MOVE_SIZE_TO_16(length_field, &actual_bytes); return_ACPI_STATUS(AE_OK); } /******************************************************************************* * * FUNCTION: acpi_rs_address32_resource * * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte * stream * bytes_consumed - Pointer to where the number of bytes * consumed the byte_stream_buffer is * returned * output_buffer - Pointer to the return data buffer * structure_size - Pointer to where the number of bytes * in the return data struct is returned * * RETURN: Status * * DESCRIPTION: Take the resource byte stream and fill out the appropriate * structure pointed to by the output_buffer. Return the * number of bytes consumed from the byte stream. * ******************************************************************************/ acpi_status acpi_rs_address32_resource(u8 * byte_stream_buffer, acpi_size * bytes_consumed, u8 ** output_buffer, acpi_size * structure_size) { u16 temp16; u8 temp8; u8 *temp_ptr; u32 index; u8 *buffer = byte_stream_buffer; struct acpi_resource *output_struct = (void *)*output_buffer; acpi_size struct_size = ACPI_SIZEOF_RESOURCE(struct acpi_resource_address32); ACPI_FUNCTION_TRACE("rs_address32_resource"); /* Get the Descriptor Length field */ buffer += 1; ACPI_MOVE_16_TO_16(&temp16, buffer); /* Validate minimum descriptor length */ if (temp16 < 23) { return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH); } *bytes_consumed = temp16 + 3; output_struct->id = ACPI_RSTYPE_ADDRESS32; /* Get the Resource Type (Byte3) */ buffer += 2; temp8 = *buffer; /* Values 0-2 and 0xC0-0xFF are valid */ if ((temp8 > 2) && (temp8 < 0xC0)) { return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE); } output_struct->data.address32.resource_type = temp8; /* Get the General Flags (Byte4) */ buffer += 1; acpi_rs_decode_general_flags(&output_struct->data, *buffer); /* Get the Type Specific Flags (Byte5) */ buffer += 1; acpi_rs_decode_specific_flags(&output_struct->data, *buffer); /* Get Granularity (Bytes 6-9) */ buffer += 1; ACPI_MOVE_32_TO_32(&output_struct->data.address32.granularity, buffer); /* Get min_address_range (Bytes 10-13) */ buffer += 4; ACPI_MOVE_32_TO_32(&output_struct->data.address32.min_address_range, buffer); /* Get max_address_range (Bytes 14-17) */ buffer += 4; ACPI_MOVE_32_TO_32(&output_struct->data.address32.max_address_range, buffer); /* Get address_translation_offset (Bytes 18-21) */ buffer += 4; ACPI_MOVE_32_TO_32(&output_struct->data.address32. address_translation_offset, buffer); /* Get address_length (Bytes 22-25) */ buffer += 4; ACPI_MOVE_32_TO_32(&output_struct->data.address32.address_length, buffer); /* Resource Source Index (if present) */ buffer += 4; /* * This will leave us pointing to the Resource Source Index * If it is present, then save it off and calculate the * pointer to where the null terminated string goes: * * Note: Some resource descriptors will have an additional null, so * we add 1 to the length. */ if (*bytes_consumed > (26 + 1)) { /* Dereference the Index */ output_struct->data.address32.resource_source.index = (u32) * buffer; /* Point to the String */ buffer += 1; /* Point the String pointer to the end of this structure */ output_struct->data.address32.resource_source.string_ptr = (char *)((u8 *) output_struct + struct_size); temp_ptr = (u8 *) output_struct->data.address32.resource_source.string_ptr; /* Copy the resource_source string into the buffer */ index = 0; while (*buffer) { *temp_ptr = *buffer; temp_ptr++; buffer++; index++; } /* Add the terminating null and set the string length */ *temp_ptr = 0; output_struct->data.address32.resource_source.string_length = index + 1; /* * In order for the struct_size to fall on a 32-bit boundary, * calculate the length of the string and expand the * struct_size to the next 32-bit boundary. */ temp8 = (u8) (index + 1); struct_size += ACPI_ROUND_UP_to_32_bITS(temp8); } else { output_struct->data.address32.resource_source.index = 0; output_struct->data.address32.resource_source.string_length = 0; output_struct->data.address32.resource_source.string_ptr = NULL; } /* Set the Length parameter */ output_struct->length = (u32) struct_size; /* Return the final size of the structure */ *structure_size = struct_size; return_ACPI_STATUS(AE_OK); } /******************************************************************************* * * FUNCTION: acpi_rs_address32_stream * * PARAMETERS: linked_list - Pointer to the resource linked list * output_buffer - Pointer to the user's return buffer * bytes_consumed - Pointer to where the number of bytes * used in the output_buffer is returned * * RETURN: Status * * DESCRIPTION: Take the linked list resource structure and fills in the * the appropriate bytes in a byte stream * ******************************************************************************/ acpi_status acpi_rs_address32_stream(struct acpi_resource *linked_list, u8 ** output_buffer, acpi_size * bytes_consumed) { u8 *buffer; u16 *length_field; ACPI_FUNCTION_TRACE("rs_address32_stream"); buffer = *output_buffer; /* Set the Descriptor Type field */ *buffer = ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE; buffer += 1; /* Save a pointer to the Length field - to be filled in later */ length_field = ACPI_CAST_PTR(u16, buffer); buffer += 2; /* Set the Resource Type (Memory, Io, bus_number) */ *buffer = (u8) (linked_list->data.address32.resource_type & 0x03); buffer += 1; /* Set the general flags */ *buffer = acpi_rs_encode_general_flags(&linked_list->data); buffer += 1; /* Set the type specific flags */ *buffer = acpi_rs_encode_specific_flags(&linked_list->data); buffer += 1; /* Set the address space granularity */ ACPI_MOVE_32_TO_32(buffer, &linked_list->data.address32.granularity); buffer += 4; /* Set the address range minimum */ ACPI_MOVE_32_TO_32(buffer, &linked_list->data.address32.min_address_range); buffer += 4; /* Set the address range maximum */ ACPI_MOVE_32_TO_32(buffer, &linked_list->data.address32.max_address_range); buffer += 4; /* Set the address translation offset */ ACPI_MOVE_32_TO_32(buffer, &linked_list->data.address32. address_translation_offset); buffer += 4; /* Set the address length */ ACPI_MOVE_32_TO_32(buffer, &linked_list->data.address32.address_length); buffer += 4; /* Resource Source Index and Resource Source are optional */ if (linked_list->data.address32.resource_source.string_length) { *buffer = (u8) linked_list->data.address32.resource_source.index; buffer += 1; /* Copy the resource_source string */ ACPI_STRCPY((char *)buffer, linked_list->data.address32.resource_source. string_ptr); /* * Buffer needs to be set to the length of the string + one for the * terminating null */ buffer += (acpi_size) (ACPI_STRLEN (linked_list->data.address32.resource_source. string_ptr) + 1); } /* Return the number of bytes consumed in this operation */ *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer); /* * Set the length field to the number of bytes consumed * minus the header size (3 bytes) */ *length_field = (u16) (*bytes_consumed - 3); return_ACPI_STATUS(AE_OK); } /******************************************************************************* * * FUNCTION: acpi_rs_address64_resource * * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte * stream * bytes_consumed - Pointer to where the number of bytes * consumed the byte_stream_buffer is * returned * output_buffer - Pointer to the return data buffer * structure_size - Pointer to where the number of bytes * in the return data struct is returned * * RETURN: Status * * DESCRIPTION: Take the resource byte stream and fill out the appropriate * structure pointed to by the output_buffer. Return the * number of bytes consumed from the byte stream. * ******************************************************************************/ acpi_status acpi_rs_address64_resource(u8 * byte_stream_buffer, acpi_size * bytes_consumed, u8 ** output_buffer, acpi_size * structure_size) { u16 temp16; u8 temp8; u8 resource_type; u8 *temp_ptr; u32 index; u8 *buffer = byte_stream_buffer; struct acpi_resource *output_struct = (void *)*output_buffer; acpi_size struct_size = ACPI_SIZEOF_RESOURCE(struct acpi_resource_address64); ACPI_FUNCTION_TRACE("rs_address64_resource"); /* Get the Descriptor Type */ resource_type = *buffer; /* Get the Descriptor Length field */ buffer += 1; ACPI_MOVE_16_TO_16(&temp16, buffer); /* Validate minimum descriptor length */ if (temp16 < 43) { return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH); } *bytes_consumed = temp16 + 3; output_struct->id = ACPI_RSTYPE_ADDRESS64; /* Get the Resource Type (Byte3) */ buffer += 2; temp8 = *buffer; /* Values 0-2 and 0xC0-0xFF are valid */ if ((temp8 > 2) && (temp8 < 0xC0)) { return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE); } output_struct->data.address64.resource_type = temp8; /* Get the General Flags (Byte4) */ buffer += 1; acpi_rs_decode_general_flags(&output_struct->data, *buffer); /* Get the Type Specific Flags (Byte5) */ buffer += 1; acpi_rs_decode_specific_flags(&output_struct->data, *buffer); if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) { /* Move past revision_id and Reserved byte */ buffer += 2; } /* Get Granularity (Bytes 6-13) or (Bytes 8-15) */ buffer += 1; ACPI_MOVE_64_TO_64(&output_struct->data.address64.granularity, buffer); /* Get min_address_range (Bytes 14-21) or (Bytes 16-23) */ buffer += 8; ACPI_MOVE_64_TO_64(&output_struct->data.address64.min_address_range, buffer); /* Get max_address_range (Bytes 22-29) or (Bytes 24-31) */ buffer += 8; ACPI_MOVE_64_TO_64(&output_struct->data.address64.max_address_range, buffer); /* Get address_translation_offset (Bytes 30-37) or (Bytes 32-39) */ buffer += 8; ACPI_MOVE_64_TO_64(&output_struct->data.address64. address_translation_offset, buffer); /* Get address_length (Bytes 38-45) or (Bytes 40-47) */ buffer += 8; ACPI_MOVE_64_TO_64(&output_struct->data.address64.address_length, buffer); output_struct->data.address64.resource_source.index = 0; output_struct->data.address64.resource_source.string_length = 0; output_struct->data.address64.resource_source.string_ptr = NULL; if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) { /* Get type_specific_attribute (Bytes 48-55) */ buffer += 8; ACPI_MOVE_64_TO_64(&output_struct->data.address64. type_specific_attributes, buffer); } else { output_struct->data.address64.type_specific_attributes = 0; /* Resource Source Index (if present) */ buffer += 8; /* * This will leave us pointing to the Resource Source Index * If it is present, then save it off and calculate the * pointer to where the null terminated string goes: * Each Interrupt takes 32-bits + the 5 bytes of the * stream that are default. * * Note: Some resource descriptors will have an additional null, so * we add 1 to the length. */ if (*bytes_consumed > (46 + 1)) { /* Dereference the Index */ output_struct->data.address64.resource_source.index = (u32) * buffer; /* Point to the String */ buffer += 1; /* Point the String pointer to the end of this structure */ output_struct->data.address64.resource_source. string_ptr = (char *)((u8 *) output_struct + struct_size); temp_ptr = (u8 *) output_struct->data.address64.resource_source. string_ptr; /* Copy the resource_source string into the buffer */ index = 0; while (*buffer) { *temp_ptr = *buffer; temp_ptr++; buffer++; index++; } /* * Add the terminating null and set the string length */ *temp_ptr = 0; output_struct->data.address64.resource_source. string_length = index + 1; /* * In order for the struct_size to fall on a 32-bit boundary, * calculate the length of the string and expand the * struct_size to the next 32-bit boundary. */ temp8 = (u8) (index + 1); struct_size += ACPI_ROUND_UP_to_32_bITS(temp8); } } /* Set the Length parameter */ output_struct->length = (u32) struct_size; /* Return the final size of the structure */ *structure_size = struct_size; return_ACPI_STATUS(AE_OK); } /******************************************************************************* * * FUNCTION: acpi_rs_address64_stream * * PARAMETERS: linked_list - Pointer to the resource linked list * output_buffer - Pointer to the user's return buffer * bytes_consumed - Pointer to where the number of bytes * used in the output_buffer is returned * * RETURN: Status * * DESCRIPTION: Take the linked list resource structure and fills in the * the appropriate bytes in a byte stream * ******************************************************************************/ acpi_status acpi_rs_address64_stream(struct acpi_resource *linked_list, u8 ** output_buffer, acpi_size * bytes_consumed) { u8 *buffer; u16 *length_field; ACPI_FUNCTION_TRACE("rs_address64_stream"); buffer = *output_buffer; /* Set the Descriptor Type field */ *buffer = ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE; buffer += 1; /* Save a pointer to the Length field - to be filled in later */ length_field = ACPI_CAST_PTR(u16, buffer); buffer += 2; /* Set the Resource Type (Memory, Io, bus_number) */ *buffer = (u8) (linked_list->data.address64.resource_type & 0x03); buffer += 1; /* Set the general flags */ *buffer = acpi_rs_encode_general_flags(&linked_list->data); buffer += 1; /* Set the type specific flags */ *buffer = acpi_rs_encode_specific_flags(&linked_list->data); buffer += 1; /* Set the address space granularity */ ACPI_MOVE_64_TO_64(buffer, &linked_list->data.address64.granularity); buffer += 8; /* Set the address range minimum */ ACPI_MOVE_64_TO_64(buffer, &linked_list->data.address64.min_address_range); buffer += 8; /* Set the address range maximum */ ACPI_MOVE_64_TO_64(buffer, &linked_list->data.address64.max_address_range); buffer += 8; /* Set the address translation offset */ ACPI_MOVE_64_TO_64(buffer, &linked_list->data.address64. address_translation_offset); buffer += 8; /* Set the address length */ ACPI_MOVE_64_TO_64(buffer, &linked_list->data.address64.address_length); buffer += 8; /* Resource Source Index and Resource Source are optional */ if (linked_list->data.address64.resource_source.string_length) { *buffer = (u8) linked_list->data.address64.resource_source.index; buffer += 1; /* Copy the resource_source string */ ACPI_STRCPY((char *)buffer, linked_list->data.address64.resource_source. string_ptr); /* * Buffer needs to be set to the length of the string + one for the * terminating null */ buffer += (acpi_size) (ACPI_STRLEN (linked_list->data.address64.resource_source. string_ptr) + 1); } /* Return the number of bytes consumed in this operation */ *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer); /* * Set the length field to the number of bytes consumed * minus the header size (3 bytes) */ *length_field = (u16) (*bytes_consumed - 3); return_ACPI_STATUS(AE_OK); }