diff options
Diffstat (limited to 'drivers/acpi/acpica/dbexec.c')
| -rw-r--r-- | drivers/acpi/acpica/dbexec.c | 764 |
1 files changed, 764 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/dbexec.c b/drivers/acpi/acpica/dbexec.c new file mode 100644 index 000000000000..d713e2df65b9 --- /dev/null +++ b/drivers/acpi/acpica/dbexec.c @@ -0,0 +1,764 @@ +/******************************************************************************* + * + * Module Name: dbexec - debugger control method execution + * + ******************************************************************************/ + +/* + * Copyright (C) 2000 - 2015, 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 "accommon.h" +#include "acdebug.h" +#include "acnamesp.h" + +#define _COMPONENT ACPI_CA_DEBUGGER +ACPI_MODULE_NAME("dbexec") + +static struct acpi_db_method_info acpi_gbl_db_method_info; + +/* Local prototypes */ + +static acpi_status +acpi_db_execute_method(struct acpi_db_method_info *info, + struct acpi_buffer *return_obj); + +static acpi_status acpi_db_execute_setup(struct acpi_db_method_info *info); + +static u32 acpi_db_get_outstanding_allocations(void); + +static void ACPI_SYSTEM_XFACE acpi_db_method_thread(void *context); + +static acpi_status +acpi_db_execution_walk(acpi_handle obj_handle, + u32 nesting_level, void *context, void **return_value); + +/******************************************************************************* + * + * FUNCTION: acpi_db_delete_objects + * + * PARAMETERS: count - Count of objects in the list + * objects - Array of ACPI_OBJECTs to be deleted + * + * RETURN: None + * + * DESCRIPTION: Delete a list of ACPI_OBJECTS. Handles packages and nested + * packages via recursion. + * + ******************************************************************************/ + +void acpi_db_delete_objects(u32 count, union acpi_object *objects) +{ + u32 i; + + for (i = 0; i < count; i++) { + switch (objects[i].type) { + case ACPI_TYPE_BUFFER: + + ACPI_FREE(objects[i].buffer.pointer); + break; + + case ACPI_TYPE_PACKAGE: + + /* Recursive call to delete package elements */ + + acpi_db_delete_objects(objects[i].package.count, + objects[i].package.elements); + + /* Free the elements array */ + + ACPI_FREE(objects[i].package.elements); + break; + + default: + + break; + } + } +} + +/******************************************************************************* + * + * FUNCTION: acpi_db_execute_method + * + * PARAMETERS: info - Valid info segment + * return_obj - Where to put return object + * + * RETURN: Status + * + * DESCRIPTION: Execute a control method. + * + ******************************************************************************/ + +static acpi_status +acpi_db_execute_method(struct acpi_db_method_info *info, + struct acpi_buffer *return_obj) +{ + acpi_status status; + struct acpi_object_list param_objects; + union acpi_object params[ACPI_DEBUGGER_MAX_ARGS + 1]; + u32 i; + + ACPI_FUNCTION_TRACE(db_execute_method); + + if (acpi_gbl_db_output_to_file && !acpi_dbg_level) { + acpi_os_printf("Warning: debug output is not enabled!\n"); + } + + param_objects.count = 0; + param_objects.pointer = NULL; + + /* Pass through any command-line arguments */ + + if (info->args && info->args[0]) { + + /* Get arguments passed on the command line */ + + for (i = 0; (info->args[i] && *(info->args[i])); i++) { + + /* Convert input string (token) to an actual union acpi_object */ + + status = acpi_db_convert_to_object(info->types[i], + info->args[i], + ¶ms[i]); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, + "While parsing method arguments")); + goto cleanup; + } + } + + param_objects.count = i; + param_objects.pointer = params; + } + + /* Prepare for a return object of arbitrary size */ + + return_obj->pointer = acpi_gbl_db_buffer; + return_obj->length = ACPI_DEBUG_BUFFER_SIZE; + + /* Do the actual method execution */ + + acpi_gbl_method_executing = TRUE; + status = acpi_evaluate_object(NULL, info->pathname, + ¶m_objects, return_obj); + + acpi_gbl_cm_single_step = FALSE; + acpi_gbl_method_executing = FALSE; + + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, + "while executing %s from debugger", + info->pathname)); + + if (status == AE_BUFFER_OVERFLOW) { + ACPI_ERROR((AE_INFO, + "Possible overflow of internal debugger " + "buffer (size 0x%X needed 0x%X)", + ACPI_DEBUG_BUFFER_SIZE, + (u32)return_obj->length)); + } + } + +cleanup: + acpi_db_delete_objects(param_objects.count, params); + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_db_execute_setup + * + * PARAMETERS: info - Valid method info + * + * RETURN: None + * + * DESCRIPTION: Setup info segment prior to method execution + * + ******************************************************************************/ + +static acpi_status acpi_db_execute_setup(struct acpi_db_method_info *info) +{ + acpi_status status; + + ACPI_FUNCTION_NAME(db_execute_setup); + + /* Catenate the current scope to the supplied name */ + + info->pathname[0] = 0; + if ((info->name[0] != '\\') && (info->name[0] != '/')) { + if (acpi_ut_safe_strcat(info->pathname, sizeof(info->pathname), + acpi_gbl_db_scope_buf)) { + status = AE_BUFFER_OVERFLOW; + goto error_exit; + } + } + + if (acpi_ut_safe_strcat(info->pathname, sizeof(info->pathname), + info->name)) { + status = AE_BUFFER_OVERFLOW; + goto error_exit; + } + + acpi_db_prep_namestring(info->pathname); + + acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT); + acpi_os_printf("Evaluating %s\n", info->pathname); + + if (info->flags & EX_SINGLE_STEP) { + acpi_gbl_cm_single_step = TRUE; + acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT); + } + + else { + /* No single step, allow redirection to a file */ + + acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT); + } + + return (AE_OK); + +error_exit: + + ACPI_EXCEPTION((AE_INFO, status, "During setup for method execution")); + return (status); +} + +#ifdef ACPI_DBG_TRACK_ALLOCATIONS +u32 acpi_db_get_cache_info(struct acpi_memory_list *cache) +{ + + return (cache->total_allocated - cache->total_freed - + cache->current_depth); +} +#endif + +/******************************************************************************* + * + * FUNCTION: acpi_db_get_outstanding_allocations + * + * PARAMETERS: None + * + * RETURN: Current global allocation count minus cache entries + * + * DESCRIPTION: Determine the current number of "outstanding" allocations -- + * those allocations that have not been freed and also are not + * in one of the various object caches. + * + ******************************************************************************/ + +static u32 acpi_db_get_outstanding_allocations(void) +{ + u32 outstanding = 0; + +#ifdef ACPI_DBG_TRACK_ALLOCATIONS + + outstanding += acpi_db_get_cache_info(acpi_gbl_state_cache); + outstanding += acpi_db_get_cache_info(acpi_gbl_ps_node_cache); + outstanding += acpi_db_get_cache_info(acpi_gbl_ps_node_ext_cache); + outstanding += acpi_db_get_cache_info(acpi_gbl_operand_cache); +#endif + + return (outstanding); +} + +/******************************************************************************* + * + * FUNCTION: acpi_db_execution_walk + * + * PARAMETERS: WALK_CALLBACK + * + * RETURN: Status + * + * DESCRIPTION: Execute a control method. Name is relative to the current + * scope. + * + ******************************************************************************/ + +static acpi_status +acpi_db_execution_walk(acpi_handle obj_handle, + u32 nesting_level, void *context, void **return_value) +{ + union acpi_operand_object *obj_desc; + struct acpi_namespace_node *node = + (struct acpi_namespace_node *)obj_handle; + struct acpi_buffer return_obj; + acpi_status status; + + obj_desc = acpi_ns_get_attached_object(node); + if (obj_desc->method.param_count) { + return (AE_OK); + } + + return_obj.pointer = NULL; + return_obj.length = ACPI_ALLOCATE_BUFFER; + + acpi_ns_print_node_pathname(node, "Evaluating"); + + /* Do the actual method execution */ + + acpi_os_printf("\n"); + acpi_gbl_method_executing = TRUE; + + status = acpi_evaluate_object(node, NULL, NULL, &return_obj); + + acpi_os_printf("Evaluation of [%4.4s] returned %s\n", + acpi_ut_get_node_name(node), + acpi_format_exception(status)); + + acpi_gbl_method_executing = FALSE; + return (AE_OK); +} + +/******************************************************************************* + * + * FUNCTION: acpi_db_execute + * + * PARAMETERS: name - Name of method to execute + * args - Parameters to the method + * Types - + * flags - single step/no single step + * + * RETURN: None + * + * DESCRIPTION: Execute a control method. Name is relative to the current + * scope. + * + ******************************************************************************/ + +void +acpi_db_execute(char *name, char **args, acpi_object_type * types, u32 flags) +{ + acpi_status status; + struct acpi_buffer return_obj; + char *name_string; + +#ifdef ACPI_DEBUG_OUTPUT + u32 previous_allocations; + u32 allocations; +#endif + + /* + * Allow one execution to be performed by debugger or single step + * execution will be dead locked by the interpreter mutexes. + */ + if (acpi_gbl_method_executing) { + acpi_os_printf("Only one debugger execution is allowed.\n"); + return; + } +#ifdef ACPI_DEBUG_OUTPUT + /* Memory allocation tracking */ + + previous_allocations = acpi_db_get_outstanding_allocations(); +#endif + + if (*name == '*') { + (void)acpi_walk_namespace(ACPI_TYPE_METHOD, ACPI_ROOT_OBJECT, + ACPI_UINT32_MAX, + acpi_db_execution_walk, NULL, NULL, + NULL); + return; + } else { + name_string = ACPI_ALLOCATE(strlen(name) + 1); + if (!name_string) { + return; + } + + memset(&acpi_gbl_db_method_info, 0, + sizeof(struct acpi_db_method_info)); + + strcpy(name_string, name); + acpi_ut_strupr(name_string); + acpi_gbl_db_method_info.name = name_string; + acpi_gbl_db_method_info.args = args; + acpi_gbl_db_method_info.types = types; + acpi_gbl_db_method_info.flags = flags; + + return_obj.pointer = NULL; + return_obj.length = ACPI_ALLOCATE_BUFFER; + + status = acpi_db_execute_setup(&acpi_gbl_db_method_info); + if (ACPI_FAILURE(status)) { + ACPI_FREE(name_string); + return; + } + + /* Get the NS node, determines existence also */ + + status = acpi_get_handle(NULL, acpi_gbl_db_method_info.pathname, + &acpi_gbl_db_method_info.method); + if (ACPI_SUCCESS(status)) { + status = + acpi_db_execute_method(&acpi_gbl_db_method_info, + &return_obj); + } + ACPI_FREE(name_string); + } + + /* + * Allow any handlers in separate threads to complete. + * (Such as Notify handlers invoked from AML executed above). + */ + acpi_os_sleep((u64)10); + +#ifdef ACPI_DEBUG_OUTPUT + + /* Memory allocation tracking */ + + allocations = + acpi_db_get_outstanding_allocations() - previous_allocations; + + acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT); + + if (allocations > 0) { + acpi_os_printf + ("0x%X Outstanding allocations after evaluation of %s\n", + allocations, acpi_gbl_db_method_info.pathname); + } +#endif + + if (ACPI_FAILURE(status)) { + acpi_os_printf("Evaluation of %s failed with status %s\n", + acpi_gbl_db_method_info.pathname, + acpi_format_exception(status)); + } else { + /* Display a return object, if any */ + + if (return_obj.length) { + acpi_os_printf("Evaluation of %s returned object %p, " + "external buffer length %X\n", + acpi_gbl_db_method_info.pathname, + return_obj.pointer, + (u32)return_obj.length); + + acpi_db_dump_external_object(return_obj.pointer, 1); + + /* Dump a _PLD buffer if present */ + + if (ACPI_COMPARE_NAME + ((ACPI_CAST_PTR + (struct acpi_namespace_node, + acpi_gbl_db_method_info.method)->name.ascii), + METHOD_NAME__PLD)) { + acpi_db_dump_pld_buffer(return_obj.pointer); + } + } else { + acpi_os_printf + ("No object was returned from evaluation of %s\n", + acpi_gbl_db_method_info.pathname); + } + } + + acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT); +} + +/******************************************************************************* + * + * FUNCTION: acpi_db_method_thread + * + * PARAMETERS: context - Execution info segment + * + * RETURN: None + * + * DESCRIPTION: Debugger execute thread. Waits for a command line, then + * simply dispatches it. + * + ******************************************************************************/ + +static void ACPI_SYSTEM_XFACE acpi_db_method_thread(void *context) +{ + acpi_status status; + struct acpi_db_method_info *info = context; + struct acpi_db_method_info local_info; + u32 i; + u8 allow; + struct acpi_buffer return_obj; + + /* + * acpi_gbl_db_method_info.Arguments will be passed as method arguments. + * Prevent acpi_gbl_db_method_info from being modified by multiple threads + * concurrently. + * + * Note: The arguments we are passing are used by the ASL test suite + * (aslts). Do not change them without updating the tests. + */ + (void)acpi_os_wait_semaphore(info->info_gate, 1, ACPI_WAIT_FOREVER); + + if (info->init_args) { + acpi_db_uint32_to_hex_string(info->num_created, + info->index_of_thread_str); + acpi_db_uint32_to_hex_string((u32)acpi_os_get_thread_id(), + info->id_of_thread_str); + } + + if (info->threads && (info->num_created < info->num_threads)) { + info->threads[info->num_created++] = acpi_os_get_thread_id(); + } + + local_info = *info; + local_info.args = local_info.arguments; + local_info.arguments[0] = local_info.num_threads_str; + local_info.arguments[1] = local_info.id_of_thread_str; + local_info.arguments[2] = local_info.index_of_thread_str; + local_info.arguments[3] = NULL; + + local_info.types = local_info.arg_types; + + (void)acpi_os_signal_semaphore(info->info_gate, 1); + + for (i = 0; i < info->num_loops; i++) { + status = acpi_db_execute_method(&local_info, &return_obj); + if (ACPI_FAILURE(status)) { + acpi_os_printf + ("%s During evaluation of %s at iteration %X\n", + acpi_format_exception(status), info->pathname, i); + if (status == AE_ABORT_METHOD) { + break; + } + } +#if 0 + if ((i % 100) == 0) { + acpi_os_printf("%u loops, Thread 0x%x\n", + i, acpi_os_get_thread_id()); + } + + if (return_obj.length) { + acpi_os_printf + ("Evaluation of %s returned object %p Buflen %X\n", + info->pathname, return_obj.pointer, + (u32)return_obj.length); + acpi_db_dump_external_object(return_obj.pointer, 1); + } +#endif + } + + /* Signal our completion */ + + allow = 0; + (void)acpi_os_wait_semaphore(info->thread_complete_gate, + 1, ACPI_WAIT_FOREVER); + info->num_completed++; + + if (info->num_completed == info->num_threads) { + + /* Do signal for main thread once only */ + allow = 1; + } + + (void)acpi_os_signal_semaphore(info->thread_complete_gate, 1); + + if (allow) { + status = acpi_os_signal_semaphore(info->main_thread_gate, 1); + if (ACPI_FAILURE(status)) { + acpi_os_printf + ("Could not signal debugger thread sync semaphore, %s\n", + acpi_format_exception(status)); + } + } +} + +/******************************************************************************* + * + * FUNCTION: acpi_db_create_execution_threads + * + * PARAMETERS: num_threads_arg - Number of threads to create + * num_loops_arg - Loop count for the thread(s) + * method_name_arg - Control method to execute + * + * RETURN: None + * + * DESCRIPTION: Create threads to execute method(s) + * + ******************************************************************************/ + +void +acpi_db_create_execution_threads(char *num_threads_arg, + char *num_loops_arg, char *method_name_arg) +{ + acpi_status status; + u32 num_threads; + u32 num_loops; + u32 i; + u32 size; + acpi_mutex main_thread_gate; + acpi_mutex thread_complete_gate; + acpi_mutex info_gate; + + /* Get the arguments */ + + num_threads = strtoul(num_threads_arg, NULL, 0); + num_loops = strtoul(num_loops_arg, NULL, 0); + + if (!num_threads || !num_loops) { + acpi_os_printf("Bad argument: Threads %X, Loops %X\n", + num_threads, num_loops); + return; + } + + /* + * Create the semaphore for synchronization of + * the created threads with the main thread. + */ + status = acpi_os_create_semaphore(1, 0, &main_thread_gate); + if (ACPI_FAILURE(status)) { + acpi_os_printf("Could not create semaphore for " + "synchronization with the main thread, %s\n", + acpi_format_exception(status)); + return; + } + + /* + * Create the semaphore for synchronization + * between the created threads. + */ + status = acpi_os_create_semaphore(1, 1, &thread_complete_gate); + if (ACPI_FAILURE(status)) { + acpi_os_printf("Could not create semaphore for " + "synchronization between the created threads, %s\n", + acpi_format_exception(status)); + + (void)acpi_os_delete_semaphore(main_thread_gate); + return; + } + + status = acpi_os_create_semaphore(1, 1, &info_gate); + if (ACPI_FAILURE(status)) { + acpi_os_printf("Could not create semaphore for " + "synchronization of AcpiGbl_DbMethodInfo, %s\n", + acpi_format_exception(status)); + + (void)acpi_os_delete_semaphore(thread_complete_gate); + (void)acpi_os_delete_semaphore(main_thread_gate); + return; + } + + memset(&acpi_gbl_db_method_info, 0, sizeof(struct acpi_db_method_info)); + + /* Array to store IDs of threads */ + + acpi_gbl_db_method_info.num_threads = num_threads; + size = sizeof(acpi_thread_id) * acpi_gbl_db_method_info.num_threads; + + acpi_gbl_db_method_info.threads = acpi_os_allocate(size); + if (acpi_gbl_db_method_info.threads == NULL) { + acpi_os_printf("No memory for thread IDs array\n"); + (void)acpi_os_delete_semaphore(main_thread_gate); + (void)acpi_os_delete_semaphore(thread_complete_gate); + (void)acpi_os_delete_semaphore(info_gate); + return; + } + memset(acpi_gbl_db_method_info.threads, 0, size); + + /* Setup the context to be passed to each thread */ + + acpi_gbl_db_method_info.name = method_name_arg; + acpi_gbl_db_method_info.flags = 0; + acpi_gbl_db_method_info.num_loops = num_loops; + acpi_gbl_db_method_info.main_thread_gate = main_thread_gate; + acpi_gbl_db_method_info.thread_complete_gate = thread_complete_gate; + acpi_gbl_db_method_info.info_gate = info_gate; + + /* Init arguments to be passed to method */ + + acpi_gbl_db_method_info.init_args = 1; + acpi_gbl_db_method_info.args = acpi_gbl_db_method_info.arguments; + acpi_gbl_db_method_info.arguments[0] = + acpi_gbl_db_method_info.num_threads_str; + acpi_gbl_db_method_info.arguments[1] = + acpi_gbl_db_method_info.id_of_thread_str; + acpi_gbl_db_method_info.arguments[2] = + acpi_gbl_db_method_info.index_of_thread_str; + acpi_gbl_db_method_info.arguments[3] = NULL; + + acpi_gbl_db_method_info.types = acpi_gbl_db_method_info.arg_types; + acpi_gbl_db_method_info.arg_types[0] = ACPI_TYPE_INTEGER; + acpi_gbl_db_method_info.arg_types[1] = ACPI_TYPE_INTEGER; + acpi_gbl_db_method_info.arg_types[2] = ACPI_TYPE_INTEGER; + + acpi_db_uint32_to_hex_string(num_threads, + acpi_gbl_db_method_info.num_threads_str); + + status = acpi_db_execute_setup(&acpi_gbl_db_method_info); + if (ACPI_FAILURE(status)) { + goto cleanup_and_exit; + } + + /* Get the NS node, determines existence also */ + + status = acpi_get_handle(NULL, acpi_gbl_db_method_info.pathname, + &acpi_gbl_db_method_info.method); + if (ACPI_FAILURE(status)) { + acpi_os_printf("%s Could not get handle for %s\n", + acpi_format_exception(status), + acpi_gbl_db_method_info.pathname); + goto cleanup_and_exit; + } + + /* Create the threads */ + + acpi_os_printf("Creating %X threads to execute %X times each\n", + num_threads, num_loops); + + for (i = 0; i < (num_threads); i++) { + status = + acpi_os_execute(OSL_DEBUGGER_EXEC_THREAD, + acpi_db_method_thread, + &acpi_gbl_db_method_info); + if (ACPI_FAILURE(status)) { + break; + } + } + + /* Wait for all threads to complete */ + + (void)acpi_os_wait_semaphore(main_thread_gate, 1, ACPI_WAIT_FOREVER); + + acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT); + acpi_os_printf("All threads (%X) have completed\n", num_threads); + acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT); + +cleanup_and_exit: + + /* Cleanup and exit */ + + (void)acpi_os_delete_semaphore(main_thread_gate); + (void)acpi_os_delete_semaphore(thread_complete_gate); + (void)acpi_os_delete_semaphore(info_gate); + + acpi_os_free(acpi_gbl_db_method_info.threads); + acpi_gbl_db_method_info.threads = NULL; +} |