| /******************************************************************************* |
| * |
| * Module Name: utmisc - common utility procedures |
| * |
| ******************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2012, 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 <linux/module.h> |
| |
| #include <acpi/acpi.h> |
| #include "accommon.h" |
| #include "acnamesp.h" |
| |
| #define _COMPONENT ACPI_UTILITIES |
| ACPI_MODULE_NAME("utmisc") |
| |
| #if defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP |
| /******************************************************************************* |
| * |
| * FUNCTION: ut_convert_backslashes |
| * |
| * PARAMETERS: pathname - File pathname string to be converted |
| * |
| * RETURN: Modifies the input Pathname |
| * |
| * DESCRIPTION: Convert all backslashes (0x5C) to forward slashes (0x2F) within |
| * the entire input file pathname string. |
| * |
| ******************************************************************************/ |
| void ut_convert_backslashes(char *pathname) |
| { |
| |
| if (!pathname) { |
| return; |
| } |
| |
| while (*pathname) { |
| if (*pathname == '\\') { |
| *pathname = '/'; |
| } |
| |
| pathname++; |
| } |
| } |
| #endif |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_is_pci_root_bridge |
| * |
| * PARAMETERS: id - The HID/CID in string format |
| * |
| * RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge |
| * |
| * DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID. |
| * |
| ******************************************************************************/ |
| |
| u8 acpi_ut_is_pci_root_bridge(char *id) |
| { |
| |
| /* |
| * Check if this is a PCI root bridge. |
| * ACPI 3.0+: check for a PCI Express root also. |
| */ |
| if (!(ACPI_STRCMP(id, |
| PCI_ROOT_HID_STRING)) || |
| !(ACPI_STRCMP(id, PCI_EXPRESS_ROOT_HID_STRING))) { |
| return (TRUE); |
| } |
| |
| return (FALSE); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_is_aml_table |
| * |
| * PARAMETERS: table - An ACPI table |
| * |
| * RETURN: TRUE if table contains executable AML; FALSE otherwise |
| * |
| * DESCRIPTION: Check ACPI Signature for a table that contains AML code. |
| * Currently, these are DSDT,SSDT,PSDT. All other table types are |
| * data tables that do not contain AML code. |
| * |
| ******************************************************************************/ |
| |
| u8 acpi_ut_is_aml_table(struct acpi_table_header *table) |
| { |
| |
| /* These are the only tables that contain executable AML */ |
| |
| if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) || |
| ACPI_COMPARE_NAME(table->signature, ACPI_SIG_PSDT) || |
| ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT)) { |
| return (TRUE); |
| } |
| |
| return (FALSE); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_allocate_owner_id |
| * |
| * PARAMETERS: owner_id - Where the new owner ID is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Allocate a table or method owner ID. The owner ID is used to |
| * track objects created by the table or method, to be deleted |
| * when the method exits or the table is unloaded. |
| * |
| ******************************************************************************/ |
| |
| acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id) |
| { |
| u32 i; |
| u32 j; |
| u32 k; |
| acpi_status status; |
| |
| ACPI_FUNCTION_TRACE(ut_allocate_owner_id); |
| |
| /* Guard against multiple allocations of ID to the same location */ |
| |
| if (*owner_id) { |
| ACPI_ERROR((AE_INFO, "Owner ID [0x%2.2X] already exists", |
| *owner_id)); |
| return_ACPI_STATUS(AE_ALREADY_EXISTS); |
| } |
| |
| /* Mutex for the global ID mask */ |
| |
| status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES); |
| if (ACPI_FAILURE(status)) { |
| return_ACPI_STATUS(status); |
| } |
| |
| /* |
| * Find a free owner ID, cycle through all possible IDs on repeated |
| * allocations. (ACPI_NUM_OWNERID_MASKS + 1) because first index may have |
| * to be scanned twice. |
| */ |
| for (i = 0, j = acpi_gbl_last_owner_id_index; |
| i < (ACPI_NUM_OWNERID_MASKS + 1); i++, j++) { |
| if (j >= ACPI_NUM_OWNERID_MASKS) { |
| j = 0; /* Wraparound to start of mask array */ |
| } |
| |
| for (k = acpi_gbl_next_owner_id_offset; k < 32; k++) { |
| if (acpi_gbl_owner_id_mask[j] == ACPI_UINT32_MAX) { |
| |
| /* There are no free IDs in this mask */ |
| |
| break; |
| } |
| |
| if (!(acpi_gbl_owner_id_mask[j] & (1 << k))) { |
| /* |
| * Found a free ID. The actual ID is the bit index plus one, |
| * making zero an invalid Owner ID. Save this as the last ID |
| * allocated and update the global ID mask. |
| */ |
| acpi_gbl_owner_id_mask[j] |= (1 << k); |
| |
| acpi_gbl_last_owner_id_index = (u8) j; |
| acpi_gbl_next_owner_id_offset = (u8) (k + 1); |
| |
| /* |
| * Construct encoded ID from the index and bit position |
| * |
| * Note: Last [j].k (bit 255) is never used and is marked |
| * permanently allocated (prevents +1 overflow) |
| */ |
| *owner_id = |
| (acpi_owner_id) ((k + 1) + ACPI_MUL_32(j)); |
| |
| ACPI_DEBUG_PRINT((ACPI_DB_VALUES, |
| "Allocated OwnerId: %2.2X\n", |
| (unsigned int)*owner_id)); |
| goto exit; |
| } |
| } |
| |
| acpi_gbl_next_owner_id_offset = 0; |
| } |
| |
| /* |
| * All owner_ids have been allocated. This typically should |
| * not happen since the IDs are reused after deallocation. The IDs are |
| * allocated upon table load (one per table) and method execution, and |
| * they are released when a table is unloaded or a method completes |
| * execution. |
| * |
| * If this error happens, there may be very deep nesting of invoked control |
| * methods, or there may be a bug where the IDs are not released. |
| */ |
| status = AE_OWNER_ID_LIMIT; |
| ACPI_ERROR((AE_INFO, |
| "Could not allocate new OwnerId (255 max), AE_OWNER_ID_LIMIT")); |
| |
| exit: |
| (void)acpi_ut_release_mutex(ACPI_MTX_CACHES); |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_release_owner_id |
| * |
| * PARAMETERS: owner_id_ptr - Pointer to a previously allocated owner_ID |
| * |
| * RETURN: None. No error is returned because we are either exiting a |
| * control method or unloading a table. Either way, we would |
| * ignore any error anyway. |
| * |
| * DESCRIPTION: Release a table or method owner ID. Valid IDs are 1 - 255 |
| * |
| ******************************************************************************/ |
| |
| void acpi_ut_release_owner_id(acpi_owner_id * owner_id_ptr) |
| { |
| acpi_owner_id owner_id = *owner_id_ptr; |
| acpi_status status; |
| u32 index; |
| u32 bit; |
| |
| ACPI_FUNCTION_TRACE_U32(ut_release_owner_id, owner_id); |
| |
| /* Always clear the input owner_id (zero is an invalid ID) */ |
| |
| *owner_id_ptr = 0; |
| |
| /* Zero is not a valid owner_ID */ |
| |
| if (owner_id == 0) { |
| ACPI_ERROR((AE_INFO, "Invalid OwnerId: 0x%2.2X", owner_id)); |
| return_VOID; |
| } |
| |
| /* Mutex for the global ID mask */ |
| |
| status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES); |
| if (ACPI_FAILURE(status)) { |
| return_VOID; |
| } |
| |
| /* Normalize the ID to zero */ |
| |
| owner_id--; |
| |
| /* Decode ID to index/offset pair */ |
| |
| index = ACPI_DIV_32(owner_id); |
| bit = 1 << ACPI_MOD_32(owner_id); |
| |
| /* Free the owner ID only if it is valid */ |
| |
| if (acpi_gbl_owner_id_mask[index] & bit) { |
| acpi_gbl_owner_id_mask[index] ^= bit; |
| } else { |
| ACPI_ERROR((AE_INFO, |
| "Release of non-allocated OwnerId: 0x%2.2X", |
| owner_id + 1)); |
| } |
| |
| (void)acpi_ut_release_mutex(ACPI_MTX_CACHES); |
| return_VOID; |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_strupr (strupr) |
| * |
| * PARAMETERS: src_string - The source string to convert |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Convert string to uppercase |
| * |
| * NOTE: This is not a POSIX function, so it appears here, not in utclib.c |
| * |
| ******************************************************************************/ |
| |
| void acpi_ut_strupr(char *src_string) |
| { |
| char *string; |
| |
| ACPI_FUNCTION_ENTRY(); |
| |
| if (!src_string) { |
| return; |
| } |
| |
| /* Walk entire string, uppercasing the letters */ |
| |
| for (string = src_string; *string; string++) { |
| *string = (char)ACPI_TOUPPER(*string); |
| } |
| |
| return; |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_print_string |
| * |
| * PARAMETERS: string - Null terminated ASCII string |
| * max_length - Maximum output length |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape |
| * sequences. |
| * |
| ******************************************************************************/ |
| |
| void acpi_ut_print_string(char *string, u8 max_length) |
| { |
| u32 i; |
| |
| if (!string) { |
| acpi_os_printf("<\"NULL STRING PTR\">"); |
| return; |
| } |
| |
| acpi_os_printf("\""); |
| for (i = 0; string[i] && (i < max_length); i++) { |
| |
| /* Escape sequences */ |
| |
| switch (string[i]) { |
| case 0x07: |
| acpi_os_printf("\\a"); /* BELL */ |
| break; |
| |
| case 0x08: |
| acpi_os_printf("\\b"); /* BACKSPACE */ |
| break; |
| |
| case 0x0C: |
| acpi_os_printf("\\f"); /* FORMFEED */ |
| break; |
| |
| case 0x0A: |
| acpi_os_printf("\\n"); /* LINEFEED */ |
| break; |
| |
| case 0x0D: |
| acpi_os_printf("\\r"); /* CARRIAGE RETURN */ |
| break; |
| |
| case 0x09: |
| acpi_os_printf("\\t"); /* HORIZONTAL TAB */ |
| break; |
| |
| case 0x0B: |
| acpi_os_printf("\\v"); /* VERTICAL TAB */ |
| break; |
| |
| case '\'': /* Single Quote */ |
| case '\"': /* Double Quote */ |
| case '\\': /* Backslash */ |
| acpi_os_printf("\\%c", (int)string[i]); |
| break; |
| |
| default: |
| |
| /* Check for printable character or hex escape */ |
| |
| if (ACPI_IS_PRINT(string[i])) { |
| /* This is a normal character */ |
| |
| acpi_os_printf("%c", (int)string[i]); |
| } else { |
| /* All others will be Hex escapes */ |
| |
| acpi_os_printf("\\x%2.2X", (s32) string[i]); |
| } |
| break; |
| } |
| } |
| acpi_os_printf("\""); |
| |
| if (i == max_length && string[i]) { |
| acpi_os_printf("..."); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_dword_byte_swap |
| * |
| * PARAMETERS: value - Value to be converted |
| * |
| * RETURN: u32 integer with bytes swapped |
| * |
| * DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes) |
| * |
| ******************************************************************************/ |
| |
| u32 acpi_ut_dword_byte_swap(u32 value) |
| { |
| union { |
| u32 value; |
| u8 bytes[4]; |
| } out; |
| union { |
| u32 value; |
| u8 bytes[4]; |
| } in; |
| |
| ACPI_FUNCTION_ENTRY(); |
| |
| in.value = value; |
| |
| out.bytes[0] = in.bytes[3]; |
| out.bytes[1] = in.bytes[2]; |
| out.bytes[2] = in.bytes[1]; |
| out.bytes[3] = in.bytes[0]; |
| |
| return (out.value); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_set_integer_width |
| * |
| * PARAMETERS: Revision From DSDT header |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Set the global integer bit width based upon the revision |
| * of the DSDT. For Revision 1 and 0, Integers are 32 bits. |
| * For Revision 2 and above, Integers are 64 bits. Yes, this |
| * makes a difference. |
| * |
| ******************************************************************************/ |
| |
| void acpi_ut_set_integer_width(u8 revision) |
| { |
| |
| if (revision < 2) { |
| |
| /* 32-bit case */ |
| |
| acpi_gbl_integer_bit_width = 32; |
| acpi_gbl_integer_nybble_width = 8; |
| acpi_gbl_integer_byte_width = 4; |
| } else { |
| /* 64-bit case (ACPI 2.0+) */ |
| |
| acpi_gbl_integer_bit_width = 64; |
| acpi_gbl_integer_nybble_width = 16; |
| acpi_gbl_integer_byte_width = 8; |
| } |
| } |
| |
| #ifdef ACPI_DEBUG_OUTPUT |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_display_init_pathname |
| * |
| * PARAMETERS: type - Object type of the node |
| * obj_handle - Handle whose pathname will be displayed |
| * path - Additional path string to be appended. |
| * (NULL if no extra path) |
| * |
| * RETURN: acpi_status |
| * |
| * DESCRIPTION: Display full pathname of an object, DEBUG ONLY |
| * |
| ******************************************************************************/ |
| |
| void |
| acpi_ut_display_init_pathname(u8 type, |
| struct acpi_namespace_node *obj_handle, |
| char *path) |
| { |
| acpi_status status; |
| struct acpi_buffer buffer; |
| |
| ACPI_FUNCTION_ENTRY(); |
| |
| /* Only print the path if the appropriate debug level is enabled */ |
| |
| if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) { |
| return; |
| } |
| |
| /* Get the full pathname to the node */ |
| |
| buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; |
| status = acpi_ns_handle_to_pathname(obj_handle, &buffer); |
| if (ACPI_FAILURE(status)) { |
| return; |
| } |
| |
| /* Print what we're doing */ |
| |
| switch (type) { |
| case ACPI_TYPE_METHOD: |
| acpi_os_printf("Executing "); |
| break; |
| |
| default: |
| acpi_os_printf("Initializing "); |
| break; |
| } |
| |
| /* Print the object type and pathname */ |
| |
| acpi_os_printf("%-12s %s", |
| acpi_ut_get_type_name(type), (char *)buffer.pointer); |
| |
| /* Extra path is used to append names like _STA, _INI, etc. */ |
| |
| if (path) { |
| acpi_os_printf(".%s", path); |
| } |
| acpi_os_printf("\n"); |
| |
| ACPI_FREE(buffer.pointer); |
| } |
| #endif |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_valid_acpi_char |
| * |
| * PARAMETERS: char - The character to be examined |
| * position - Byte position (0-3) |
| * |
| * RETURN: TRUE if the character is valid, FALSE otherwise |
| * |
| * DESCRIPTION: Check for a valid ACPI character. Must be one of: |
| * 1) Upper case alpha |
| * 2) numeric |
| * 3) underscore |
| * |
| * We allow a '!' as the last character because of the ASF! table |
| * |
| ******************************************************************************/ |
| |
| u8 acpi_ut_valid_acpi_char(char character, u32 position) |
| { |
| |
| if (!((character >= 'A' && character <= 'Z') || |
| (character >= '0' && character <= '9') || (character == '_'))) { |
| |
| /* Allow a '!' in the last position */ |
| |
| if (character == '!' && position == 3) { |
| return (TRUE); |
| } |
| |
| return (FALSE); |
| } |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_valid_acpi_name |
| * |
| * PARAMETERS: name - The name to be examined |
| * |
| * RETURN: TRUE if the name is valid, FALSE otherwise |
| * |
| * DESCRIPTION: Check for a valid ACPI name. Each character must be one of: |
| * 1) Upper case alpha |
| * 2) numeric |
| * 3) underscore |
| * |
| ******************************************************************************/ |
| |
| u8 acpi_ut_valid_acpi_name(u32 name) |
| { |
| u32 i; |
| |
| ACPI_FUNCTION_ENTRY(); |
| |
| for (i = 0; i < ACPI_NAME_SIZE; i++) { |
| if (!acpi_ut_valid_acpi_char |
| ((ACPI_CAST_PTR(char, &name))[i], i)) { |
| return (FALSE); |
| } |
| } |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_repair_name |
| * |
| * PARAMETERS: name - The ACPI name to be repaired |
| * |
| * RETURN: Repaired version of the name |
| * |
| * DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and |
| * return the new name. |
| * |
| ******************************************************************************/ |
| |
| acpi_name acpi_ut_repair_name(char *name) |
| { |
| u32 i; |
| char new_name[ACPI_NAME_SIZE]; |
| |
| for (i = 0; i < ACPI_NAME_SIZE; i++) { |
| new_name[i] = name[i]; |
| |
| /* |
| * Replace a bad character with something printable, yet technically |
| * still invalid. This prevents any collisions with existing "good" |
| * names in the namespace. |
| */ |
| if (!acpi_ut_valid_acpi_char(name[i], i)) { |
| new_name[i] = '*'; |
| } |
| } |
| |
| return (*(u32 *) new_name); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_strtoul64 |
| * |
| * PARAMETERS: string - Null terminated string |
| * base - Radix of the string: 16 or ACPI_ANY_BASE; |
| * ACPI_ANY_BASE means 'in behalf of to_integer' |
| * ret_integer - Where the converted integer is returned |
| * |
| * RETURN: Status and Converted value |
| * |
| * DESCRIPTION: Convert a string into an unsigned value. Performs either a |
| * 32-bit or 64-bit conversion, depending on the current mode |
| * of the interpreter. |
| * NOTE: Does not support Octal strings, not needed. |
| * |
| ******************************************************************************/ |
| |
| acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 * ret_integer) |
| { |
| u32 this_digit = 0; |
| u64 return_value = 0; |
| u64 quotient; |
| u64 dividend; |
| u32 to_integer_op = (base == ACPI_ANY_BASE); |
| u32 mode32 = (acpi_gbl_integer_byte_width == 4); |
| u8 valid_digits = 0; |
| u8 sign_of0x = 0; |
| u8 term = 0; |
| |
| ACPI_FUNCTION_TRACE_STR(ut_stroul64, string); |
| |
| switch (base) { |
| case ACPI_ANY_BASE: |
| case 16: |
| break; |
| |
| default: |
| /* Invalid Base */ |
| return_ACPI_STATUS(AE_BAD_PARAMETER); |
| } |
| |
| if (!string) { |
| goto error_exit; |
| } |
| |
| /* Skip over any white space in the buffer */ |
| |
| while ((*string) && (ACPI_IS_SPACE(*string) || *string == '\t')) { |
| string++; |
| } |
| |
| if (to_integer_op) { |
| /* |
| * Base equal to ACPI_ANY_BASE means 'ToInteger operation case'. |
| * We need to determine if it is decimal or hexadecimal. |
| */ |
| if ((*string == '0') && (ACPI_TOLOWER(*(string + 1)) == 'x')) { |
| sign_of0x = 1; |
| base = 16; |
| |
| /* Skip over the leading '0x' */ |
| string += 2; |
| } else { |
| base = 10; |
| } |
| } |
| |
| /* Any string left? Check that '0x' is not followed by white space. */ |
| |
| if (!(*string) || ACPI_IS_SPACE(*string) || *string == '\t') { |
| if (to_integer_op) { |
| goto error_exit; |
| } else { |
| goto all_done; |
| } |
| } |
| |
| /* |
| * Perform a 32-bit or 64-bit conversion, depending upon the current |
| * execution mode of the interpreter |
| */ |
| dividend = (mode32) ? ACPI_UINT32_MAX : ACPI_UINT64_MAX; |
| |
| /* Main loop: convert the string to a 32- or 64-bit integer */ |
| |
| while (*string) { |
| if (ACPI_IS_DIGIT(*string)) { |
| |
| /* Convert ASCII 0-9 to Decimal value */ |
| |
| this_digit = ((u8) * string) - '0'; |
| } else if (base == 10) { |
| |
| /* Digit is out of range; possible in to_integer case only */ |
| |
| term = 1; |
| } else { |
| this_digit = (u8) ACPI_TOUPPER(*string); |
| if (ACPI_IS_XDIGIT((char)this_digit)) { |
| |
| /* Convert ASCII Hex char to value */ |
| |
| this_digit = this_digit - 'A' + 10; |
| } else { |
| term = 1; |
| } |
| } |
| |
| if (term) { |
| if (to_integer_op) { |
| goto error_exit; |
| } else { |
| break; |
| } |
| } else if ((valid_digits == 0) && (this_digit == 0) |
| && !sign_of0x) { |
| |
| /* Skip zeros */ |
| string++; |
| continue; |
| } |
| |
| valid_digits++; |
| |
| if (sign_of0x && ((valid_digits > 16) |
| || ((valid_digits > 8) && mode32))) { |
| /* |
| * This is to_integer operation case. |
| * No any restrictions for string-to-integer conversion, |
| * see ACPI spec. |
| */ |
| goto error_exit; |
| } |
| |
| /* Divide the digit into the correct position */ |
| |
| (void)acpi_ut_short_divide((dividend - (u64) this_digit), |
| base, "ient, NULL); |
| |
| if (return_value > quotient) { |
| if (to_integer_op) { |
| goto error_exit; |
| } else { |
| break; |
| } |
| } |
| |
| return_value *= base; |
| return_value += this_digit; |
| string++; |
| } |
| |
| /* All done, normal exit */ |
| |
| all_done: |
| |
| ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n", |
| ACPI_FORMAT_UINT64(return_value))); |
| |
| *ret_integer = return_value; |
| return_ACPI_STATUS(AE_OK); |
| |
| error_exit: |
| /* Base was set/validated above */ |
| |
| if (base == 10) { |
| return_ACPI_STATUS(AE_BAD_DECIMAL_CONSTANT); |
| } else { |
| return_ACPI_STATUS(AE_BAD_HEX_CONSTANT); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_create_update_state_and_push |
| * |
| * PARAMETERS: object - Object to be added to the new state |
| * action - Increment/Decrement |
| * state_list - List the state will be added to |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Create a new state and push it |
| * |
| ******************************************************************************/ |
| |
| acpi_status |
| acpi_ut_create_update_state_and_push(union acpi_operand_object *object, |
| u16 action, |
| union acpi_generic_state **state_list) |
| { |
| union acpi_generic_state *state; |
| |
| ACPI_FUNCTION_ENTRY(); |
| |
| /* Ignore null objects; these are expected */ |
| |
| if (!object) { |
| return (AE_OK); |
| } |
| |
| state = acpi_ut_create_update_state(object, action); |
| if (!state) { |
| return (AE_NO_MEMORY); |
| } |
| |
| acpi_ut_push_generic_state(state_list, state); |
| return (AE_OK); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_walk_package_tree |
| * |
| * PARAMETERS: source_object - The package to walk |
| * target_object - Target object (if package is being copied) |
| * walk_callback - Called once for each package element |
| * context - Passed to the callback function |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Walk through a package |
| * |
| ******************************************************************************/ |
| |
| acpi_status |
| acpi_ut_walk_package_tree(union acpi_operand_object * source_object, |
| void *target_object, |
| acpi_pkg_callback walk_callback, void *context) |
| { |
| acpi_status status = AE_OK; |
| union acpi_generic_state *state_list = NULL; |
| union acpi_generic_state *state; |
| u32 this_index; |
| union acpi_operand_object *this_source_obj; |
| |
| ACPI_FUNCTION_TRACE(ut_walk_package_tree); |
| |
| state = acpi_ut_create_pkg_state(source_object, target_object, 0); |
| if (!state) { |
| return_ACPI_STATUS(AE_NO_MEMORY); |
| } |
| |
| while (state) { |
| |
| /* Get one element of the package */ |
| |
| this_index = state->pkg.index; |
| this_source_obj = (union acpi_operand_object *) |
| state->pkg.source_object->package.elements[this_index]; |
| |
| /* |
| * Check for: |
| * 1) An uninitialized package element. It is completely |
| * legal to declare a package and leave it uninitialized |
| * 2) Not an internal object - can be a namespace node instead |
| * 3) Any type other than a package. Packages are handled in else |
| * case below. |
| */ |
| if ((!this_source_obj) || |
| (ACPI_GET_DESCRIPTOR_TYPE(this_source_obj) != |
| ACPI_DESC_TYPE_OPERAND) |
| || (this_source_obj->common.type != ACPI_TYPE_PACKAGE)) { |
| status = |
| walk_callback(ACPI_COPY_TYPE_SIMPLE, |
| this_source_obj, state, context); |
| if (ACPI_FAILURE(status)) { |
| return_ACPI_STATUS(status); |
| } |
| |
| state->pkg.index++; |
| while (state->pkg.index >= |
| state->pkg.source_object->package.count) { |
| /* |
| * We've handled all of the objects at this level, This means |
| * that we have just completed a package. That package may |
| * have contained one or more packages itself. |
| * |
| * Delete this state and pop the previous state (package). |
| */ |
| acpi_ut_delete_generic_state(state); |
| state = acpi_ut_pop_generic_state(&state_list); |
| |
| /* Finished when there are no more states */ |
| |
| if (!state) { |
| /* |
| * We have handled all of the objects in the top level |
| * package just add the length of the package objects |
| * and exit |
| */ |
| return_ACPI_STATUS(AE_OK); |
| } |
| |
| /* |
| * Go back up a level and move the index past the just |
| * completed package object. |
| */ |
| state->pkg.index++; |
| } |
| } else { |
| /* This is a subobject of type package */ |
| |
| status = |
| walk_callback(ACPI_COPY_TYPE_PACKAGE, |
| this_source_obj, state, context); |
| if (ACPI_FAILURE(status)) { |
| return_ACPI_STATUS(status); |
| } |
| |
| /* |
| * Push the current state and create a new one |
| * The callback above returned a new target package object. |
| */ |
| acpi_ut_push_generic_state(&state_list, state); |
| state = acpi_ut_create_pkg_state(this_source_obj, |
| state->pkg. |
| this_target_obj, 0); |
| if (!state) { |
| |
| /* Free any stacked Update State objects */ |
| |
| while (state_list) { |
| state = |
| acpi_ut_pop_generic_state |
| (&state_list); |
| acpi_ut_delete_generic_state(state); |
| } |
| return_ACPI_STATUS(AE_NO_MEMORY); |
| } |
| } |
| } |
| |
| /* We should never get here */ |
| |
| return_ACPI_STATUS(AE_AML_INTERNAL); |
| } |