cregit-Linux how code gets into the kernel

Release 4.11 drivers/acpi/acpica/dbcmds.c

/*******************************************************************************
 *
 * Module Name: dbcmds - Miscellaneous debug commands and output routines
 *
 ******************************************************************************/

/*
 * Copyright (C) 2000 - 2017, 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 "acevents.h"
#include "acdebug.h"
#include "acnamesp.h"
#include "acresrc.h"
#include "actables.h"


#define _COMPONENT          ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbcmds")

/* Local prototypes */
static void
acpi_dm_compare_aml_resources(u8 *aml1_buffer,
			      acpi_rsdesc_size aml1_buffer_length,
			      u8 *aml2_buffer,
			      acpi_rsdesc_size aml2_buffer_length);

static acpi_status
acpi_dm_test_resource_conversion(struct acpi_namespace_node *node, char *name);

static acpi_status
acpi_db_resource_callback(struct acpi_resource *resource, void *context);

static acpi_status
acpi_db_device_resources(acpi_handle obj_handle,
			 u32 nesting_level, void *context, void **return_value);

static void acpi_db_do_one_sleep_state(u8 sleep_state);


static char *acpi_db_trace_method_name = NULL;

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_convert_to_node
 *
 * PARAMETERS:  in_string           - String to convert
 *
 * RETURN:      Pointer to a NS node
 *
 * DESCRIPTION: Convert a string to a valid NS pointer. Handles numeric or
 *              alphanumeric strings.
 *
 ******************************************************************************/


struct acpi_namespace_node *acpi_db_convert_to_node(char *in_string) { struct acpi_namespace_node *node; acpi_size address; if ((*in_string >= 0x30) && (*in_string <= 0x39)) { /* Numeric argument, convert */ address = strtoul(in_string, NULL, 16); node = ACPI_TO_POINTER(address); if (!acpi_os_readable(node, sizeof(struct acpi_namespace_node))) { acpi_os_printf("Address %p is invalid", node); return (NULL); } /* Make sure pointer is valid NS node */ if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) { acpi_os_printf ("Address %p is not a valid namespace node [%s]\n", node, acpi_ut_get_descriptor_name(node)); return (NULL); } } else { /* * Alpha argument: The parameter is a name string that must be * resolved to a Namespace object. */ node = acpi_db_local_ns_lookup(in_string); if (!node) { acpi_os_printf ("Could not find [%s] in namespace, defaulting to root node\n", in_string); node = acpi_gbl_root_node; } } return (node); }

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/******************************************************************************* * * FUNCTION: acpi_db_sleep * * PARAMETERS: object_arg - Desired sleep state (0-5). NULL means * invoke all possible sleep states. * * RETURN: Status * * DESCRIPTION: Simulate sleep/wake sequences * ******************************************************************************/
acpi_status acpi_db_sleep(char *object_arg) { u8 sleep_state; u32 i; ACPI_FUNCTION_TRACE(acpi_db_sleep); /* Null input (no arguments) means to invoke all sleep states */ if (!object_arg) { acpi_os_printf("Invoking all possible sleep states, 0-%d\n", ACPI_S_STATES_MAX); for (i = 0; i <= ACPI_S_STATES_MAX; i++) { acpi_db_do_one_sleep_state((u8)i); } return_ACPI_STATUS(AE_OK); } /* Convert argument to binary and invoke the sleep state */ sleep_state = (u8)strtoul(object_arg, NULL, 0); acpi_db_do_one_sleep_state(sleep_state); return_ACPI_STATUS(AE_OK); }

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/******************************************************************************* * * FUNCTION: acpi_db_do_one_sleep_state * * PARAMETERS: sleep_state - Desired sleep state (0-5) * * RETURN: None * * DESCRIPTION: Simulate a sleep/wake sequence * ******************************************************************************/
static void acpi_db_do_one_sleep_state(u8 sleep_state) { acpi_status status; u8 sleep_type_a; u8 sleep_type_b; /* Validate parameter */ if (sleep_state > ACPI_S_STATES_MAX) { acpi_os_printf("Sleep state %d out of range (%d max)\n", sleep_state, ACPI_S_STATES_MAX); return; } acpi_os_printf("\n---- Invoking sleep state S%d (%s):\n", sleep_state, acpi_gbl_sleep_state_names[sleep_state]); /* Get the values for the sleep type registers (for display only) */ status = acpi_get_sleep_type_data(sleep_state, &sleep_type_a, &sleep_type_b); if (ACPI_FAILURE(status)) { acpi_os_printf("Could not evaluate [%s] method, %s\n", acpi_gbl_sleep_state_names[sleep_state], acpi_format_exception(status)); return; } acpi_os_printf ("Register values for sleep state S%d: Sleep-A: %.2X, Sleep-B: %.2X\n", sleep_state, sleep_type_a, sleep_type_b); /* Invoke the various sleep/wake interfaces */ acpi_os_printf("**** Sleep: Prepare to sleep (S%d) ****\n", sleep_state); status = acpi_enter_sleep_state_prep(sleep_state); if (ACPI_FAILURE(status)) { goto error_exit; } acpi_os_printf("**** Sleep: Going to sleep (S%d) ****\n", sleep_state); status = acpi_enter_sleep_state(sleep_state); if (ACPI_FAILURE(status)) { goto error_exit; } acpi_os_printf("**** Wake: Prepare to return from sleep (S%d) ****\n", sleep_state); status = acpi_leave_sleep_state_prep(sleep_state); if (ACPI_FAILURE(status)) { goto error_exit; } acpi_os_printf("**** Wake: Return from sleep (S%d) ****\n", sleep_state); status = acpi_leave_sleep_state(sleep_state); if (ACPI_FAILURE(status)) { goto error_exit; } return; error_exit: ACPI_EXCEPTION((AE_INFO, status, "During invocation of sleep state S%d", sleep_state)); }

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/******************************************************************************* * * FUNCTION: acpi_db_display_locks * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Display information about internal mutexes. * ******************************************************************************/
void acpi_db_display_locks(void) { u32 i; for (i = 0; i < ACPI_MAX_MUTEX; i++) { acpi_os_printf("%26s : %s\n", acpi_ut_get_mutex_name(i), acpi_gbl_mutex_info[i].thread_id == ACPI_MUTEX_NOT_ACQUIRED ? "Locked" : "Unlocked"); } }

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/******************************************************************************* * * FUNCTION: acpi_db_display_table_info * * PARAMETERS: table_arg - Name of table to be displayed * * RETURN: None * * DESCRIPTION: Display information about loaded tables. Current * implementation displays all loaded tables. * ******************************************************************************/
void acpi_db_display_table_info(char *table_arg) { u32 i; struct acpi_table_desc *table_desc; acpi_status status; /* Header */ acpi_os_printf("Idx ID Status Type " "TableHeader (Sig, Address, Length, Misc)\n"); /* Walk the entire root table list */ for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) { table_desc = &acpi_gbl_root_table_list.tables[i]; /* Index and Table ID */ acpi_os_printf("%3u %.2u ", i, table_desc->owner_id); /* Decode the table flags */ if (!(table_desc->flags & ACPI_TABLE_IS_LOADED)) { acpi_os_printf("NotLoaded "); } else { acpi_os_printf(" Loaded "); } switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) { case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: acpi_os_printf("External/virtual "); break; case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: acpi_os_printf("Internal/physical "); break; case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: acpi_os_printf("Internal/virtual "); break; default: acpi_os_printf("INVALID TYPE "); break; } /* Make sure that the table is mapped */ status = acpi_tb_validate_table(table_desc); if (ACPI_FAILURE(status)) { return; } /* Dump the table header */ if (table_desc->pointer) { acpi_tb_print_table_header(table_desc->address, table_desc->pointer); } else { /* If the pointer is null, the table has been unloaded */ ACPI_INFO(("%4.4s - Table has been unloaded", table_desc->signature.ascii)); } } }

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/******************************************************************************* * * FUNCTION: acpi_db_unload_acpi_table * * PARAMETERS: object_name - Namespace pathname for an object that * is owned by the table to be unloaded * * RETURN: None * * DESCRIPTION: Unload an ACPI table, via any namespace node that is owned * by the table. * ******************************************************************************/
void acpi_db_unload_acpi_table(char *object_name) { struct acpi_namespace_node *node; acpi_status status; /* Translate name to an Named object */ node = acpi_db_convert_to_node(object_name); if (!node) { return; } status = acpi_unload_parent_table(ACPI_CAST_PTR(acpi_handle, node)); if (ACPI_SUCCESS(status)) { acpi_os_printf("Parent of [%s] (%p) unloaded and uninstalled\n", object_name, node); } else { acpi_os_printf("%s, while unloading parent table of [%s]\n", acpi_format_exception(status), object_name); } }

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/******************************************************************************* * * FUNCTION: acpi_db_send_notify * * PARAMETERS: name - Name of ACPI object where to send notify * value - Value of the notify to send. * * RETURN: None * * DESCRIPTION: Send an ACPI notification. The value specified is sent to the * named object as an ACPI notify. * ******************************************************************************/
void acpi_db_send_notify(char *name, u32 value) { struct acpi_namespace_node *node; acpi_status status; /* Translate name to an Named object */ node = acpi_db_convert_to_node(name); if (!node) { return; } /* Dispatch the notify if legal */ if (acpi_ev_is_notify_object(node)) { status = acpi_ev_queue_notify_request(node, value); if (ACPI_FAILURE(status)) { acpi_os_printf("Could not queue notify\n"); } } else { acpi_os_printf("Named object [%4.4s] Type %s, " "must be Device/Thermal/Processor type\n", acpi_ut_get_node_name(node), acpi_ut_get_type_name(node->type)); } }

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/******************************************************************************* * * FUNCTION: acpi_db_display_interfaces * * PARAMETERS: action_arg - Null, "install", or "remove" * interface_name_arg - Name for install/remove options * * RETURN: None * * DESCRIPTION: Display or modify the global _OSI interface list * ******************************************************************************/
void acpi_db_display_interfaces(char *action_arg, char *interface_name_arg) { struct acpi_interface_info *next_interface; char *sub_string; acpi_status status; /* If no arguments, just display current interface list */ if (!action_arg) { (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); next_interface = acpi_gbl_supported_interfaces; while (next_interface) { if (!(next_interface->flags & ACPI_OSI_INVALID)) { acpi_os_printf("%s\n", next_interface->name); } next_interface = next_interface->next; } acpi_os_release_mutex(acpi_gbl_osi_mutex); return; } /* If action_arg exists, so must interface_name_arg */ if (!interface_name_arg) { acpi_os_printf("Missing Interface Name argument\n"); return; } /* Uppercase the action for match below */ acpi_ut_strupr(action_arg); /* install - install an interface */ sub_string = strstr("INSTALL", action_arg); if (sub_string) { status = acpi_install_interface(interface_name_arg); if (ACPI_FAILURE(status)) { acpi_os_printf("%s, while installing \"%s\"\n", acpi_format_exception(status), interface_name_arg); } return; } /* remove - remove an interface */ sub_string = strstr("REMOVE", action_arg); if (sub_string) { status = acpi_remove_interface(interface_name_arg); if (ACPI_FAILURE(status)) { acpi_os_printf("%s, while removing \"%s\"\n", acpi_format_exception(status), interface_name_arg); } return; } /* Invalid action_arg */ acpi_os_printf("Invalid action argument: %s\n", action_arg); return; }

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/******************************************************************************* * * FUNCTION: acpi_db_display_template * * PARAMETERS: buffer_arg - Buffer name or address * * RETURN: None * * DESCRIPTION: Dump a buffer that contains a resource template * ******************************************************************************/
void acpi_db_display_template(char *buffer_arg) { struct acpi_namespace_node *node; acpi_status status; struct acpi_buffer return_buffer; /* Translate buffer_arg to an Named object */ node = acpi_db_convert_to_node(buffer_arg); if (!node || (node == acpi_gbl_root_node)) { acpi_os_printf("Invalid argument: %s\n", buffer_arg); return; } /* We must have a buffer object */ if (node->type != ACPI_TYPE_BUFFER) { acpi_os_printf ("Not a Buffer object, cannot be a template: %s\n", buffer_arg); return; } return_buffer.length = ACPI_DEBUG_BUFFER_SIZE; return_buffer.pointer = acpi_gbl_db_buffer; /* Attempt to convert the raw buffer to a resource list */ status = acpi_rs_create_resource_list(node->object, &return_buffer); acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT); acpi_dbg_level |= ACPI_LV_RESOURCES; if (ACPI_FAILURE(status)) { acpi_os_printf ("Could not convert Buffer to a resource list: %s, %s\n", buffer_arg, acpi_format_exception(status)); goto dump_buffer; } /* Now we can dump the resource list */ acpi_rs_dump_resource_list(ACPI_CAST_PTR(struct acpi_resource, return_buffer.pointer)); dump_buffer: acpi_os_printf("\nRaw data buffer:\n"); acpi_ut_debug_dump_buffer((u8 *)node->object->buffer.pointer, node->object->buffer.length, DB_BYTE_DISPLAY, ACPI_UINT32_MAX); acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT); return; }

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/******************************************************************************* * * FUNCTION: acpi_dm_compare_aml_resources * * PARAMETERS: aml1_buffer - Contains first resource list * aml1_buffer_length - Length of first resource list * aml2_buffer - Contains second resource list * aml2_buffer_length - Length of second resource list * * RETURN: None * * DESCRIPTION: Compare two AML resource lists, descriptor by descriptor (in * order to isolate a miscompare to an individual resource) * ******************************************************************************/
static void acpi_dm_compare_aml_resources(u8 *aml1_buffer, acpi_rsdesc_size aml1_buffer_length, u8 *aml2_buffer, acpi_rsdesc_size aml2_buffer_length) { u8 *aml1; u8 *aml2; u8 *aml1_end; u8 *aml2_end; acpi_rsdesc_size aml1_length; acpi_rsdesc_size aml2_length; acpi_rsdesc_size offset = 0; u8 resource_type; u32 count = 0; u32 i; /* Compare overall buffer sizes (may be different due to size rounding) */ if (aml1_buffer_length != aml2_buffer_length) { acpi_os_printf("**** Buffer length mismatch in converted " "AML: Original %X, New %X ****\n", aml1_buffer_length, aml2_buffer_length); } aml1 = aml1_buffer; aml2 = aml2_buffer; aml1_end = aml1_buffer + aml1_buffer_length; aml2_end = aml2_buffer + aml2_buffer_length; /* Walk the descriptor lists, comparing each descriptor */ while ((aml1 < aml1_end) && (aml2 < aml2_end)) { /* Get the lengths of each descriptor */ aml1_length = acpi_ut_get_descriptor_length(aml1); aml2_length = acpi_ut_get_descriptor_length(aml2); resource_type = acpi_ut_get_resource_type(aml1); /* Check for descriptor length match */ if (aml1_length != aml2_length) { acpi_os_printf ("**** Length mismatch in descriptor [%.2X] type %2.2X, " "Offset %8.8X Len1 %X, Len2 %X ****\n", count, resource_type, offset, aml1_length, aml2_length); } /* Check for descriptor byte match */ else if (memcmp(aml1, aml2, aml1_length)) { acpi_os_printf ("**** Data mismatch in descriptor [%.2X] type %2.2X, " "Offset %8.8X ****\n", count, resource_type, offset); for (i = 0; i < aml1_length; i++) { if (aml1[i] != aml2[i]) { acpi_os_printf ("Mismatch at byte offset %.2X: is %2.2X, " "should be %2.2X\n", i, aml2[i], aml1[i]); } } } /* Exit on end_tag descriptor */ if (resource_type == ACPI_RESOURCE_NAME_END_TAG) { return; } /* Point to next descriptor in each buffer */ count++; offset += aml1_length; aml1 += aml1_length; aml2 += aml2_length; } }

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/******************************************************************************* * * FUNCTION: acpi_dm_test_resource_conversion * * PARAMETERS: node - Parent device node * name - resource method name (_CRS) * * RETURN: Status * * DESCRIPTION: Compare the original AML with a conversion of the AML to * internal resource list, then back to AML. * ******************************************************************************/
static acpi_status acpi_dm_test_resource_conversion(struct acpi_namespace_node *node, char *name) { acpi_status status; struct acpi_buffer return_buffer; struct acpi_buffer resource_buffer; struct acpi_buffer new_aml; union acpi_object *original_aml; acpi_os_printf("Resource Conversion Comparison:\n"); new_aml.length = ACPI_ALLOCATE_LOCAL_BUFFER; return_buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; resource_buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; /* Get the original _CRS AML resource template */ status = acpi_evaluate_object(node, name, NULL, &return_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("Could not obtain %s: %s\n", name, acpi_format_exception(status)); return (status); } /* Get the AML resource template, converted to internal resource structs */ status = acpi_get_current_resources(node, &resource_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("AcpiGetCurrentResources failed: %s\n", acpi_format_exception(status)); goto exit1; } /* Convert internal resource list to external AML resource template */ status = acpi_rs_create_aml_resources(&resource_buffer, &new_aml); if (ACPI_FAILURE(status)) { acpi_os_printf("AcpiRsCreateAmlResources failed: %s\n", acpi_format_exception(status)); goto exit2; } /* Compare original AML to the newly created AML resource list */ original_aml = return_buffer.pointer; acpi_dm_compare_aml_resources(original_aml->buffer.pointer, (acpi_rsdesc_size)original_aml->buffer. length, new_aml.pointer, (acpi_rsdesc_size)new_aml.length); /* Cleanup and exit */ ACPI_FREE(new_aml.pointer); exit2: ACPI_FREE(resource_buffer.pointer); exit1: ACPI_FREE(return_buffer.pointer); return (status); }

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/******************************************************************************* * * FUNCTION: acpi_db_resource_callback * * PARAMETERS: acpi_walk_resource_callback * * RETURN: Status * * DESCRIPTION: Simple callback to exercise acpi_walk_resources and * acpi_walk_resource_buffer. * ******************************************************************************/
static acpi_status acpi_db_resource_callback(struct acpi_resource *resource, void *context) { return (AE_OK); }

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/******************************************************************************* * * FUNCTION: acpi_db_device_resources * * PARAMETERS: acpi_walk_callback * * RETURN: Status * * DESCRIPTION: Display the _PRT/_CRS/_PRS resources for a device object. * ******************************************************************************/
static acpi_status acpi_db_device_resources(acpi_handle obj_handle, u32 nesting_level, void *context, void **return_value) { struct acpi_namespace_node *node; struct acpi_namespace_node *prt_node = NULL; struct acpi_namespace_node *crs_node = NULL; struct acpi_namespace_node *prs_node = NULL; struct acpi_namespace_node *aei_node = NULL; char *parent_path; struct acpi_buffer return_buffer; acpi_status status; node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle); parent_path = acpi_ns_get_normalized_pathname(node, TRUE); if (!parent_path) { return (AE_NO_MEMORY); } /* Get handles to the resource methods for this device */ (void)acpi_get_handle(node, METHOD_NAME__PRT, ACPI_CAST_PTR(acpi_handle, &prt_node)); (void)acpi_get_handle(node, METHOD_NAME__CRS, ACPI_CAST_PTR(acpi_handle, &crs_node)); (void)acpi_get_handle(node, METHOD_NAME__PRS, ACPI_CAST_PTR(acpi_handle, &prs_node)); (void)acpi_get_handle(node, METHOD_NAME__AEI, ACPI_CAST_PTR(acpi_handle, &aei_node)); if (!prt_node && !crs_node && !prs_node && !aei_node) { goto cleanup; /* Nothing to do */ } acpi_os_printf("\nDevice: %s\n", parent_path); /* Prepare for a return object of arbitrary size */ return_buffer.pointer = acpi_gbl_db_buffer; return_buffer.length = ACPI_DEBUG_BUFFER_SIZE; /* _PRT */ if (prt_node) { acpi_os_printf("Evaluating _PRT\n"); status = acpi_evaluate_object(prt_node, NULL, NULL, &return_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("Could not evaluate _PRT: %s\n", acpi_format_exception(status)); goto get_crs; } return_buffer.pointer = acpi_gbl_db_buffer; return_buffer.length = ACPI_DEBUG_BUFFER_SIZE; status = acpi_get_irq_routing_table(node, &return_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("GetIrqRoutingTable failed: %s\n", acpi_format_exception(status)); goto get_crs; } acpi_rs_dump_irq_list(ACPI_CAST_PTR(u8, acpi_gbl_db_buffer)); } /* _CRS */ get_crs: if (crs_node) { acpi_os_printf("Evaluating _CRS\n"); return_buffer.pointer = acpi_gbl_db_buffer; return_buffer.length = ACPI_DEBUG_BUFFER_SIZE; status = acpi_evaluate_object(crs_node, NULL, NULL, &return_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("Could not evaluate _CRS: %s\n", acpi_format_exception(status)); goto get_prs; } /* This code exercises the acpi_walk_resources interface */ status = acpi_walk_resources(node, METHOD_NAME__CRS, acpi_db_resource_callback, NULL); if (ACPI_FAILURE(status)) { acpi_os_printf("AcpiWalkResources failed: %s\n", acpi_format_exception(status)); goto get_prs; } /* Get the _CRS resource list (test ALLOCATE buffer) */ return_buffer.pointer = NULL; return_buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; status = acpi_get_current_resources(node, &return_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("AcpiGetCurrentResources failed: %s\n", acpi_format_exception(status)); goto get_prs; } /* This code exercises the acpi_walk_resource_buffer interface */ status = acpi_walk_resource_buffer(&return_buffer, acpi_db_resource_callback, NULL); if (ACPI_FAILURE(status)) { acpi_os_printf("AcpiWalkResourceBuffer failed: %s\n", acpi_format_exception(status)); goto end_crs; } /* Dump the _CRS resource list */ acpi_rs_dump_resource_list(ACPI_CAST_PTR(struct acpi_resource, return_buffer. pointer)); /* * Perform comparison of original AML to newly created AML. This * tests both the AML->Resource conversion and the Resource->AML * conversion. */ (void)acpi_dm_test_resource_conversion(node, METHOD_NAME__CRS); /* Execute _SRS with the resource list */ acpi_os_printf("Evaluating _SRS\n"); status = acpi_set_current_resources(node, &return_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("AcpiSetCurrentResources failed: %s\n", acpi_format_exception(status)); goto end_crs; } end_crs: ACPI_FREE(return_buffer.pointer); } /* _PRS */ get_prs: if (prs_node) { acpi_os_printf("Evaluating _PRS\n"); return_buffer.pointer = acpi_gbl_db_buffer; return_buffer.length = ACPI_DEBUG_BUFFER_SIZE; status = acpi_evaluate_object(prs_node, NULL, NULL, &return_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("Could not evaluate _PRS: %s\n", acpi_format_exception(status)); goto get_aei; } return_buffer.pointer = acpi_gbl_db_buffer; return_buffer.length = ACPI_DEBUG_BUFFER_SIZE; status = acpi_get_possible_resources(node, &return_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("AcpiGetPossibleResources failed: %s\n", acpi_format_exception(status)); goto get_aei; } acpi_rs_dump_resource_list(ACPI_CAST_PTR (struct acpi_resource, acpi_gbl_db_buffer)); } /* _AEI */ get_aei: if (aei_node) { acpi_os_printf("Evaluating _AEI\n"); return_buffer.pointer = acpi_gbl_db_buffer; return_buffer.length = ACPI_DEBUG_BUFFER_SIZE; status = acpi_evaluate_object(aei_node, NULL, NULL, &return_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("Could not evaluate _AEI: %s\n", acpi_format_exception(status)); goto cleanup; } return_buffer.pointer = acpi_gbl_db_buffer; return_buffer.length = ACPI_DEBUG_BUFFER_SIZE; status = acpi_get_event_resources(node, &return_buffer); if (ACPI_FAILURE(status)) { acpi_os_printf("AcpiGetEventResources failed: %s\n", acpi_format_exception(status)); goto cleanup; } acpi_rs_dump_resource_list(ACPI_CAST_PTR (struct acpi_resource, acpi_gbl_db_buffer)); } cleanup: ACPI_FREE(parent_path); return (AE_OK); }

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/******************************************************************************* * * FUNCTION: acpi_db_display_resources * * PARAMETERS: object_arg - String object name or object pointer. * NULL or "*" means "display resources for * all devices" * * RETURN: None * * DESCRIPTION: Display the resource objects associated with a device. * ******************************************************************************/
void acpi_db_display_resources(char *object_arg) { struct acpi_namespace_node *node; acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT); acpi_dbg_level |= ACPI_LV_RESOURCES; /* Asterisk means "display resources for all devices" */ if (!object_arg || (!strcmp(object_arg, "*"))) { (void)acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, acpi_db_device_resources, NULL, NULL, NULL); } else { /* Convert string to object pointer */ node = acpi_db_convert_to_node(object_arg); if (node) { if (node->type != ACPI_TYPE_DEVICE) { acpi_os_printf ("%4.4s: Name is not a device object (%s)\n", node->name.ascii, acpi_ut_get_type_name(node->type)); } else { (void)acpi_db_device_resources(node, 0, NULL, NULL); } } } acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT); }

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#if (!ACPI_REDUCED_HARDWARE) /******************************************************************************* * * FUNCTION: acpi_db_generate_gpe * * PARAMETERS: gpe_arg - Raw GPE number, ascii string * block_arg - GPE block number, ascii string * 0 or 1 for FADT GPE blocks * * RETURN: None * * DESCRIPTION: Simulate firing of a GPE * ******************************************************************************/
void acpi_db_generate_gpe(char *gpe_arg, char *block_arg) { u32 block_number = 0; u32 gpe_number; struct acpi_gpe_event_info *gpe_event_info; gpe_number = strtoul(gpe_arg, NULL, 0); /* * If no block arg, or block arg == 0 or 1, use the FADT-defined * GPE blocks. */ if (block_arg) { block_number = strtoul(block_arg, NULL, 0); if (block_number == 1) { block_number = 0; } } gpe_event_info = acpi_ev_get_gpe_event_info(ACPI_TO_POINTER(block_number), gpe_number); if (!gpe_event_info) { acpi_os_printf("Invalid GPE\n"); return; } (void)acpi_ev_gpe_dispatch(NULL, gpe_event_info, gpe_number); }

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/******************************************************************************* * * FUNCTION: acpi_db_generate_sci * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Simulate an SCI -- just call the SCI dispatch. * ******************************************************************************/
void acpi_db_generate_sci(void) { acpi_ev_sci_dispatch(); }

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#endif /* !ACPI_REDUCED_HARDWARE */ /******************************************************************************* * * FUNCTION: acpi_db_trace * * PARAMETERS: enable_arg - ENABLE/AML to enable tracer * DISABLE to disable tracer * method_arg - Method to trace * once_arg - Whether trace once * * RETURN: None * * DESCRIPTION: Control method tracing facility * ******************************************************************************/
void acpi_db_trace(char *enable_arg, char *method_arg, char *once_arg) { u32 debug_level = 0; u32 debug_layer = 0; u32 flags = 0; acpi_ut_strupr(enable_arg); acpi_ut_strupr(once_arg); if (method_arg) { if (acpi_db_trace_method_name) { ACPI_FREE(acpi_db_trace_method_name); acpi_db_trace_method_name = NULL; } acpi_db_trace_method_name = ACPI_ALLOCATE(strlen(method_arg) + 1); if (!acpi_db_trace_method_name) { acpi_os_printf("Failed to allocate method name (%s)\n", method_arg); return; } strcpy(acpi_db_trace_method_name, method_arg); } if (!strcmp(enable_arg, "ENABLE") || !strcmp(enable_arg, "METHOD") || !strcmp(enable_arg, "OPCODE")) { if (!strcmp(enable_arg, "ENABLE")) { /* Inherit current console settings */ debug_level = acpi_gbl_db_console_debug_level; debug_layer = acpi_dbg_layer; } else { /* Restrict console output to trace points only */ debug_level = ACPI_LV_TRACE_POINT; debug_layer = ACPI_EXECUTER; } flags = ACPI_TRACE_ENABLED; if (!strcmp(enable_arg, "OPCODE")) { flags |= ACPI_TRACE_OPCODE; } if (once_arg && !strcmp(once_arg, "ONCE")) { flags |= ACPI_TRACE_ONESHOT; } } (void)acpi_debug_trace(acpi_db_trace_method_name, debug_level, debug_layer, flags); }

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