/*******************************************************************************
 *
 * Module Name: dbdisply - debug display commands
 *
 ******************************************************************************/

/*
 * 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 "amlcode.h"
#include "acdispat.h"
#include "acnamesp.h"
#include "acparser.h"
#include "acinterp.h"
#include "acevents.h"
#include "acdebug.h"

#define _COMPONENT          ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbdisply")

/* Local prototypes */
static void acpi_db_dump_parser_descriptor(union acpi_parse_object *op);

static void *acpi_db_get_pointer(void *target);

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

/*
 * System handler information.
 * Used for Handlers command, in acpi_db_display_handlers.
 */
#define ACPI_PREDEFINED_PREFIX          "%25s (%.2X) : "
#define ACPI_HANDLER_NAME_STRING               "%30s : "
#define ACPI_HANDLER_PRESENT_STRING                    "%-9s (%p)\n"
#define ACPI_HANDLER_PRESENT_STRING2                   "%-9s (%p)"
#define ACPI_HANDLER_NOT_PRESENT_STRING                "%-9s\n"

/* All predefined Address Space IDs */

static acpi_adr_space_type acpi_gbl_space_id_list[] = {
        ACPI_ADR_SPACE_SYSTEM_MEMORY,
        ACPI_ADR_SPACE_SYSTEM_IO,
        ACPI_ADR_SPACE_PCI_CONFIG,
        ACPI_ADR_SPACE_EC,
        ACPI_ADR_SPACE_SMBUS,
        ACPI_ADR_SPACE_CMOS,
        ACPI_ADR_SPACE_PCI_BAR_TARGET,
        ACPI_ADR_SPACE_IPMI,
        ACPI_ADR_SPACE_GPIO,
        ACPI_ADR_SPACE_GSBUS,
        ACPI_ADR_SPACE_DATA_TABLE,
        ACPI_ADR_SPACE_FIXED_HARDWARE
};

/* Global handler information */

typedef struct acpi_handler_info {
        void *handler;
        char *name;

} acpi_handler_info;

static struct acpi_handler_info acpi_gbl_handler_list[] = {
        {&acpi_gbl_global_notify[0].handler, "System Notifications"},
        {&acpi_gbl_global_notify[1].handler, "Device Notifications"},
        {&acpi_gbl_table_handler, "ACPI Table Events"},
        {&acpi_gbl_exception_handler, "Control Method Exceptions"},
        {&acpi_gbl_interface_handler, "OSI Invocations"}
};

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_get_pointer
 *
 * PARAMETERS:  target          - Pointer to string to be converted
 *
 * RETURN:      Converted pointer
 *
 * DESCRIPTION: Convert an ascii pointer value to a real value
 *
 ******************************************************************************/

static void *acpi_db_get_pointer(void *target)
{
        void *obj_ptr;
        acpi_size address;

        address = strtoul(target, NULL, 16);
        obj_ptr = ACPI_TO_POINTER(address);
        return (obj_ptr);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_dump_parser_descriptor
 *
 * PARAMETERS:  op              - A parser Op descriptor
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display a formatted parser object
 *
 ******************************************************************************/

static void acpi_db_dump_parser_descriptor(union acpi_parse_object *op)
{
        const struct acpi_opcode_info *info;

        info = acpi_ps_get_opcode_info(op->common.aml_opcode);

        acpi_os_printf("Parser Op Descriptor:\n");
        acpi_os_printf("%20.20s : %4.4X\n", "Opcode", op->common.aml_opcode);

        ACPI_DEBUG_ONLY_MEMBERS(acpi_os_printf("%20.20s : %s\n", "Opcode Name",
                                               info->name));

        acpi_os_printf("%20.20s : %p\n", "Value/ArgList", op->common.value.arg);
        acpi_os_printf("%20.20s : %p\n", "Parent", op->common.parent);
        acpi_os_printf("%20.20s : %p\n", "NextOp", op->common.next);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_decode_and_display_object
 *
 * PARAMETERS:  target          - String with object to be displayed. Names
 *                                and hex pointers are supported.
 *              output_type     - Byte, Word, Dword, or Qword (B|W|D|Q)
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display a formatted ACPI object
 *
 ******************************************************************************/

void acpi_db_decode_and_display_object(char *target, char *output_type)
{
        void *obj_ptr;
        struct acpi_namespace_node *node;
        union acpi_operand_object *obj_desc;
        u32 display = DB_BYTE_DISPLAY;
        char buffer[80];
        struct acpi_buffer ret_buf;
        acpi_status status;
        u32 size;

        if (!target) {
                return;
        }

        /* Decode the output type */

        if (output_type) {
                acpi_ut_strupr(output_type);
                if (output_type[0] == 'W') {
                        display = DB_WORD_DISPLAY;
                } else if (output_type[0] == 'D') {
                        display = DB_DWORD_DISPLAY;
                } else if (output_type[0] == 'Q') {
                        display = DB_QWORD_DISPLAY;
                }
        }

        ret_buf.length = sizeof(buffer);
        ret_buf.pointer = buffer;

        /* Differentiate between a number and a name */

        if ((target[0] >= 0x30) && (target[0] <= 0x39)) {
                obj_ptr = acpi_db_get_pointer(target);
                if (!acpi_os_readable(obj_ptr, 16)) {
                        acpi_os_printf
                            ("Address %p is invalid in this address space\n",
                             obj_ptr);
                        return;
                }

                /* Decode the object type */

                switch (ACPI_GET_DESCRIPTOR_TYPE(obj_ptr)) {
                case ACPI_DESC_TYPE_NAMED:

                        /* This is a namespace Node */

                        if (!acpi_os_readable
                            (obj_ptr, sizeof(struct acpi_namespace_node))) {
                                acpi_os_printf
                                    ("Cannot read entire Named object at address %p\n",
                                     obj_ptr);
                                return;
                        }

                        node = obj_ptr;
                        goto dump_node;

                case ACPI_DESC_TYPE_OPERAND:

                        /* This is a ACPI OPERAND OBJECT */

                        if (!acpi_os_readable
                            (obj_ptr, sizeof(union acpi_operand_object))) {
                                acpi_os_printf
                                    ("Cannot read entire ACPI object at address %p\n",
                                     obj_ptr);
                                return;
                        }

                        acpi_ut_debug_dump_buffer(obj_ptr,
                                                  sizeof(union
                                                         acpi_operand_object),
                                                  display, ACPI_UINT32_MAX);
                        acpi_ex_dump_object_descriptor(obj_ptr, 1);
                        break;

                case ACPI_DESC_TYPE_PARSER:

                        /* This is a Parser Op object */

                        if (!acpi_os_readable
                            (obj_ptr, sizeof(union acpi_parse_object))) {
                                acpi_os_printf
                                    ("Cannot read entire Parser object at address %p\n",
                                     obj_ptr);
                                return;
                        }

                        acpi_ut_debug_dump_buffer(obj_ptr,
                                                  sizeof(union
                                                         acpi_parse_object),
                                                  display, ACPI_UINT32_MAX);
                        acpi_db_dump_parser_descriptor((union acpi_parse_object
                                                        *)obj_ptr);
                        break;

                default:

                        /* Is not a recognizeable object */

                        acpi_os_printf
                            ("Not a known ACPI internal object, descriptor type %2.2X\n",
                             ACPI_GET_DESCRIPTOR_TYPE(obj_ptr));

                        size = 16;
                        if (acpi_os_readable(obj_ptr, 64)) {
                                size = 64;
                        }

                        /* Just dump some memory */

                        acpi_ut_debug_dump_buffer(obj_ptr, size, display,
                                                  ACPI_UINT32_MAX);
                        break;
                }

                return;
        }

        /* The parameter is a name string that must be resolved to a Named obj */

        node = acpi_db_local_ns_lookup(target);
        if (!node) {
                return;
        }

dump_node:
        /* Now dump the NS node */

        status = acpi_get_name(node, ACPI_FULL_PATHNAME_NO_TRAILING, &ret_buf);
        if (ACPI_FAILURE(status)) {
                acpi_os_printf("Could not convert name to pathname\n");
        }

        else {
                acpi_os_printf("Object %p: Namespace Node - Pathname: %s\n",
                               node, (char *)ret_buf.pointer);
        }

        if (!acpi_os_readable(node, sizeof(struct acpi_namespace_node))) {
                acpi_os_printf("Invalid Named object at address %p\n", node);
                return;
        }

        acpi_ut_debug_dump_buffer((void *)node,
                                  sizeof(struct acpi_namespace_node), display,
                                  ACPI_UINT32_MAX);
        acpi_ex_dump_namespace_node(node, 1);

        obj_desc = acpi_ns_get_attached_object(node);
        if (obj_desc) {
                acpi_os_printf("\nAttached Object %p:", obj_desc);
                if (!acpi_os_readable
                    (obj_desc, sizeof(union acpi_operand_object))) {
                        acpi_os_printf
                            ("Invalid internal ACPI Object at address %p\n",
                             obj_desc);
                        return;
                }

                if (ACPI_GET_DESCRIPTOR_TYPE(((struct acpi_namespace_node *)
                                              obj_desc)) ==
                    ACPI_DESC_TYPE_NAMED) {
                        acpi_os_printf(" Namespace Node - ");
                        status =
                            acpi_get_name((struct acpi_namespace_node *)
                                          obj_desc,
                                          ACPI_FULL_PATHNAME_NO_TRAILING,
                                          &ret_buf);
                        if (ACPI_FAILURE(status)) {
                                acpi_os_printf
                                    ("Could not convert name to pathname\n");
                        } else {
                                acpi_os_printf("Pathname: %s",
                                               (char *)ret_buf.pointer);
                        }

                        acpi_os_printf("\n");
                        acpi_ut_debug_dump_buffer((void *)obj_desc,
                                                  sizeof(struct
                                                         acpi_namespace_node),
                                                  display, ACPI_UINT32_MAX);
                } else {
                        acpi_os_printf("\n");
                        acpi_ut_debug_dump_buffer((void *)obj_desc,
                                                  sizeof(union
                                                         acpi_operand_object),
                                                  display, ACPI_UINT32_MAX);
                }

                acpi_ex_dump_object_descriptor(obj_desc, 1);
        }
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_method_info
 *
 * PARAMETERS:  start_op        - Root of the control method parse tree
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display information about the current method
 *
 ******************************************************************************/

void acpi_db_display_method_info(union acpi_parse_object *start_op)
{
        struct acpi_walk_state *walk_state;
        union acpi_operand_object *obj_desc;
        struct acpi_namespace_node *node;
        union acpi_parse_object *root_op;
        union acpi_parse_object *op;
        const struct acpi_opcode_info *op_info;
        u32 num_ops = 0;
        u32 num_operands = 0;
        u32 num_operators = 0;
        u32 num_remaining_ops = 0;
        u32 num_remaining_operands = 0;
        u32 num_remaining_operators = 0;
        u8 count_remaining = FALSE;

        walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
        if (!walk_state) {
                acpi_os_printf("There is no method currently executing\n");
                return;
        }

        obj_desc = walk_state->method_desc;
        node = walk_state->method_node;

        acpi_os_printf("Currently executing control method is [%4.4s]\n",
                       acpi_ut_get_node_name(node));
        acpi_os_printf("%X Arguments, SyncLevel = %X\n",
                       (u32)obj_desc->method.param_count,
                       (u32)obj_desc->method.sync_level);

        root_op = start_op;
        while (root_op->common.parent) {
                root_op = root_op->common.parent;
        }

        op = root_op;

        while (op) {
                if (op == start_op) {
                        count_remaining = TRUE;
                }

                num_ops++;
                if (count_remaining) {
                        num_remaining_ops++;
                }

                /* Decode the opcode */

                op_info = acpi_ps_get_opcode_info(op->common.aml_opcode);
                switch (op_info->class) {
                case AML_CLASS_ARGUMENT:

                        if (count_remaining) {
                                num_remaining_operands++;
                        }

                        num_operands++;
                        break;

                case AML_CLASS_UNKNOWN:

                        /* Bad opcode or ASCII character */

                        continue;

                default:

                        if (count_remaining) {
                                num_remaining_operators++;
                        }

                        num_operators++;
                        break;
                }

                op = acpi_ps_get_depth_next(start_op, op);
        }

        acpi_os_printf
            ("Method contains:       %X AML Opcodes - %X Operators, %X Operands\n",
             num_ops, num_operators, num_operands);

        acpi_os_printf
            ("Remaining to execute:  %X AML Opcodes - %X Operators, %X Operands\n",
             num_remaining_ops, num_remaining_operators,
             num_remaining_operands);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_locals
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display all locals for the currently running control method
 *
 ******************************************************************************/

void acpi_db_display_locals(void)
{
        struct acpi_walk_state *walk_state;

        walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
        if (!walk_state) {
                acpi_os_printf("There is no method currently executing\n");
                return;
        }

        acpi_db_decode_locals(walk_state);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_arguments
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display all arguments for the currently running control method
 *
 ******************************************************************************/

void acpi_db_display_arguments(void)
{
        struct acpi_walk_state *walk_state;

        walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
        if (!walk_state) {
                acpi_os_printf("There is no method currently executing\n");
                return;
        }

        acpi_db_decode_arguments(walk_state);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_results
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display current contents of a method result stack
 *
 ******************************************************************************/

void acpi_db_display_results(void)
{
        u32 i;
        struct acpi_walk_state *walk_state;
        union acpi_operand_object *obj_desc;
        u32 result_count = 0;
        struct acpi_namespace_node *node;
        union acpi_generic_state *frame;
        u32 index;              /* Index onto current frame */

        walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
        if (!walk_state) {
                acpi_os_printf("There is no method currently executing\n");
                return;
        }

        obj_desc = walk_state->method_desc;
        node = walk_state->method_node;

        if (walk_state->results) {
                result_count = walk_state->result_count;
        }

        acpi_os_printf("Method [%4.4s] has %X stacked result objects\n",
                       acpi_ut_get_node_name(node), result_count);

        /* From the top element of result stack */

        frame = walk_state->results;
        index = (result_count - 1) % ACPI_RESULTS_FRAME_OBJ_NUM;

        for (i = 0; i < result_count; i++) {
                obj_desc = frame->results.obj_desc[index];
                acpi_os_printf("Result%u: ", i);
                acpi_db_display_internal_object(obj_desc, walk_state);

                if (index == 0) {
                        frame = frame->results.next;
                        index = ACPI_RESULTS_FRAME_OBJ_NUM;
                }

                index--;
        }
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_calling_tree
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display current calling tree of nested control methods
 *
 ******************************************************************************/

void acpi_db_display_calling_tree(void)
{
        struct acpi_walk_state *walk_state;
        struct acpi_namespace_node *node;

        walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
        if (!walk_state) {
                acpi_os_printf("There is no method currently executing\n");
                return;
        }

        node = walk_state->method_node;
        acpi_os_printf("Current Control Method Call Tree\n");

        while (walk_state) {
                node = walk_state->method_node;
                acpi_os_printf("  [%4.4s]\n", acpi_ut_get_node_name(node));

                walk_state = walk_state->next;
        }
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_object_type
 *
 * PARAMETERS:  object_arg      - User entered NS node handle
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display type of an arbitrary NS node
 *
 ******************************************************************************/

void acpi_db_display_object_type(char *object_arg)
{
        acpi_size arg;
        acpi_handle handle;
        struct acpi_device_info *info;
        acpi_status status;
        u32 i;

        arg = strtoul(object_arg, NULL, 16);
        handle = ACPI_TO_POINTER(arg);

        status = acpi_get_object_info(handle, &info);
        if (ACPI_FAILURE(status)) {
                acpi_os_printf("Could not get object info, %s\n",
                               acpi_format_exception(status));
                return;
        }

        acpi_os_printf("ADR: %8.8X%8.8X, STA: %8.8X, Flags: %X\n",
                       ACPI_FORMAT_UINT64(info->address),
                       info->current_status, info->flags);

        acpi_os_printf("S1D-%2.2X S2D-%2.2X S3D-%2.2X S4D-%2.2X\n",
                       info->highest_dstates[0], info->highest_dstates[1],
                       info->highest_dstates[2], info->highest_dstates[3]);

        acpi_os_printf("S0W-%2.2X S1W-%2.2X S2W-%2.2X S3W-%2.2X S4W-%2.2X\n",
                       info->lowest_dstates[0], info->lowest_dstates[1],
                       info->lowest_dstates[2], info->lowest_dstates[3],
                       info->lowest_dstates[4]);

        if (info->valid & ACPI_VALID_HID) {
                acpi_os_printf("HID: %s\n", info->hardware_id.string);
        }

        if (info->valid & ACPI_VALID_UID) {
                acpi_os_printf("UID: %s\n", info->unique_id.string);
        }

        if (info->valid & ACPI_VALID_CID) {
                for (i = 0; i < info->compatible_id_list.count; i++) {
                        acpi_os_printf("CID %u: %s\n", i,
                                       info->compatible_id_list.ids[i].string);
                }
        }

        ACPI_FREE(info);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_result_object
 *
 * PARAMETERS:  obj_desc        - Object to be displayed
 *              walk_state      - Current walk state
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display the result of an AML opcode
 *
 * Note: Curently only displays the result object if we are single stepping.
 * However, this output may be useful in other contexts and could be enabled
 * to do so if needed.
 *
 ******************************************************************************/

void
acpi_db_display_result_object(union acpi_operand_object *obj_desc,
                              struct acpi_walk_state *walk_state)
{

#ifndef ACPI_APPLICATION
        if (acpi_gbl_db_thread_id != acpi_os_get_thread_id()) {
                return;
        }
#endif

        /* Only display if single stepping */

        if (!acpi_gbl_cm_single_step) {
                return;
        }

        acpi_os_printf("ResultObj: ");
        acpi_db_display_internal_object(obj_desc, walk_state);
        acpi_os_printf("\n");
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_argument_object
 *
 * PARAMETERS:  obj_desc        - Object to be displayed
 *              walk_state      - Current walk state
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display the result of an AML opcode
 *
 ******************************************************************************/

void
acpi_db_display_argument_object(union acpi_operand_object *obj_desc,
                                struct acpi_walk_state *walk_state)
{

#ifndef ACPI_APPLICATION
        if (acpi_gbl_db_thread_id != acpi_os_get_thread_id()) {
                return;
        }
#endif

        if (!acpi_gbl_cm_single_step) {
                return;
        }

        acpi_os_printf("ArgObj:  ");
        acpi_db_display_internal_object(obj_desc, walk_state);
}

#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_gpes
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display the current GPE structures
 *
 ******************************************************************************/

void acpi_db_display_gpes(void)
{
        struct acpi_gpe_block_info *gpe_block;
        struct acpi_gpe_xrupt_info *gpe_xrupt_info;
        struct acpi_gpe_event_info *gpe_event_info;
        struct acpi_gpe_register_info *gpe_register_info;
        char *gpe_type;
        struct acpi_gpe_notify_info *notify;
        u32 gpe_index;
        u32 block = 0;
        u32 i;
        u32 j;
        u32 count;
        char buffer[80];
        struct acpi_buffer ret_buf;
        acpi_status status;

        ret_buf.length = sizeof(buffer);
        ret_buf.pointer = buffer;

        block = 0;

        /* Walk the GPE lists */

        gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
        while (gpe_xrupt_info) {
                gpe_block = gpe_xrupt_info->gpe_block_list_head;
                while (gpe_block) {
                        status = acpi_get_name(gpe_block->node,
                                               ACPI_FULL_PATHNAME_NO_TRAILING,
                                               &ret_buf);
                        if (ACPI_FAILURE(status)) {
                                acpi_os_printf
                                    ("Could not convert name to pathname\n");
                        }

                        if (gpe_block->node == acpi_gbl_fadt_gpe_device) {
                                gpe_type = "FADT-defined GPE block";
                        } else {
                                gpe_type = "GPE Block Device";
                        }

                        acpi_os_printf
                            ("\nBlock %u - Info %p  DeviceNode %p [%s] - %s\n",
                             block, gpe_block, gpe_block->node, buffer,
                             gpe_type);

                        acpi_os_printf("    Registers:    %u (%u GPEs)\n",
                                       gpe_block->register_count,
                                       gpe_block->gpe_count);

                        acpi_os_printf
                            ("    GPE range:    0x%X to 0x%X on interrupt %u\n",
                             gpe_block->block_base_number,
                             gpe_block->block_base_number +
                             (gpe_block->gpe_count - 1),
                             gpe_xrupt_info->interrupt_number);

                        acpi_os_printf
                            ("    RegisterInfo: %p  Status %8.8X%8.8X Enable %8.8X%8.8X\n",
                             gpe_block->register_info,
                             ACPI_FORMAT_UINT64(gpe_block->register_info->
                                                status_address.address),
                             ACPI_FORMAT_UINT64(gpe_block->register_info->
                                                enable_address.address));

                        acpi_os_printf("  EventInfo:    %p\n",
                                       gpe_block->event_info);

                        /* Examine each GPE Register within the block */

                        for (i = 0; i < gpe_block->register_count; i++) {
                                gpe_register_info =
                                    &gpe_block->register_info[i];

                                acpi_os_printf("    Reg %u: (GPE %.2X-%.2X)  "
                                               "RunEnable %2.2X WakeEnable %2.2X"
                                               " Status %8.8X%8.8X Enable %8.8X%8.8X\n",
                                               i,
                                               gpe_register_info->
                                               base_gpe_number,
                                               gpe_register_info->
                                               base_gpe_number +
                                               (ACPI_GPE_REGISTER_WIDTH - 1),
                                               gpe_register_info->
                                               enable_for_run,
                                               gpe_register_info->
                                               enable_for_wake,
                                               ACPI_FORMAT_UINT64
                                               (gpe_register_info->
                                                status_address.address),
                                               ACPI_FORMAT_UINT64
                                               (gpe_register_info->
                                                enable_address.address));

                                /* Now look at the individual GPEs in this byte register */

                                for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
                                        gpe_index =
                                            (i * ACPI_GPE_REGISTER_WIDTH) + j;
                                        gpe_event_info =
                                            &gpe_block->event_info[gpe_index];

                                        if (ACPI_GPE_DISPATCH_TYPE
                                            (gpe_event_info->flags) ==
                                            ACPI_GPE_DISPATCH_NONE) {

                                                /* This GPE is not used (no method or handler), ignore it */

                                                continue;
                                        }

                                        acpi_os_printf
                                            ("        GPE %.2X: %p  RunRefs %2.2X Flags %2.2X (",
                                             gpe_block->block_base_number +
                                             gpe_index, gpe_event_info,
                                             gpe_event_info->runtime_count,
                                             gpe_event_info->flags);

                                        /* Decode the flags byte */

                                        if (gpe_event_info->
                                            flags & ACPI_GPE_LEVEL_TRIGGERED) {
                                                acpi_os_printf("Level, ");
                                        } else {
                                                acpi_os_printf("Edge, ");
                                        }

                                        if (gpe_event_info->
                                            flags & ACPI_GPE_CAN_WAKE) {
                                                acpi_os_printf("CanWake, ");
                                        } else {
                                                acpi_os_printf("RunOnly, ");
                                        }

                                        switch (ACPI_GPE_DISPATCH_TYPE
                                                (gpe_event_info->flags)) {
                                        case ACPI_GPE_DISPATCH_NONE:

                                                acpi_os_printf("NotUsed");
                                                break;

                                        case ACPI_GPE_DISPATCH_METHOD:

                                                acpi_os_printf("Method");
                                                break;

                                        case ACPI_GPE_DISPATCH_HANDLER:

                                                acpi_os_printf("Handler");
                                                break;

                                        case ACPI_GPE_DISPATCH_NOTIFY:

                                                count = 0;
                                                notify =
                                                    gpe_event_info->dispatch.
                                                    notify_list;
                                                while (notify) {
                                                        count++;
                                                        notify = notify->next;
                                                }

                                                acpi_os_printf
                                                    ("Implicit Notify on %u devices",
                                                     count);
                                                break;

                                        case ACPI_GPE_DISPATCH_RAW_HANDLER:

                                                acpi_os_printf("RawHandler");
                                                break;

                                        default:

                                                acpi_os_printf("UNKNOWN: %X",
                                                               ACPI_GPE_DISPATCH_TYPE
                                                               (gpe_event_info->
                                                                flags));
                                                break;
                                        }

                                        acpi_os_printf(")\n");
                                }
                        }

                        block++;
                        gpe_block = gpe_block->next;
                }

                gpe_xrupt_info = gpe_xrupt_info->next;
        }
}
#endif                          /* !ACPI_REDUCED_HARDWARE */

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_handlers
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display the currently installed global handlers
 *
 ******************************************************************************/

void acpi_db_display_handlers(void)
{
        union acpi_operand_object *obj_desc;
        union acpi_operand_object *handler_obj;
        acpi_adr_space_type space_id;
        u32 i;

        /* Operation region handlers */

        acpi_os_printf("\nOperation Region Handlers at the namespace root:\n");

        obj_desc = acpi_ns_get_attached_object(acpi_gbl_root_node);
        if (obj_desc) {
                for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_gbl_space_id_list); i++) {
                        space_id = acpi_gbl_space_id_list[i];

                        acpi_os_printf(ACPI_PREDEFINED_PREFIX,
                                       acpi_ut_get_region_name((u8)space_id),
                                       space_id);

                        handler_obj =
                            acpi_ev_find_region_handler(space_id,
                                                        obj_desc->common_notify.
                                                        handler);
                        if (handler_obj) {
                                acpi_os_printf(ACPI_HANDLER_PRESENT_STRING,
                                               (handler_obj->address_space.
                                                handler_flags &
                                                ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)
                                               ? "Default" : "User",
                                               handler_obj->address_space.
                                               handler);

                                goto found_handler;

                        }

                        /* There is no handler for this space_id */

                        acpi_os_printf("None\n");

found_handler:          ;
                }

                /* Find all handlers for user-defined space_IDs */

                handler_obj = obj_desc->common_notify.handler;
                while (handler_obj) {
                        if (handler_obj->address_space.space_id >=
                            ACPI_USER_REGION_BEGIN) {
                                acpi_os_printf(ACPI_PREDEFINED_PREFIX,
                                               "User-defined ID",
                                               handler_obj->address_space.
                                               space_id);
                                acpi_os_printf(ACPI_HANDLER_PRESENT_STRING,
                                               (handler_obj->address_space.
                                                handler_flags &
                                                ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)
                                               ? "Default" : "User",
                                               handler_obj->address_space.
                                               handler);
                        }

                        handler_obj = handler_obj->address_space.next;
                }
        }
#if (!ACPI_REDUCED_HARDWARE)

        /* Fixed event handlers */

        acpi_os_printf("\nFixed Event Handlers:\n");

        for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
                acpi_os_printf(ACPI_PREDEFINED_PREFIX,
                               acpi_ut_get_event_name(i), i);
                if (acpi_gbl_fixed_event_handlers[i].handler) {
                        acpi_os_printf(ACPI_HANDLER_PRESENT_STRING, "User",
                                       acpi_gbl_fixed_event_handlers[i].
                                       handler);
                } else {
                        acpi_os_printf(ACPI_HANDLER_NOT_PRESENT_STRING, "None");
                }
        }

#endif                          /* !ACPI_REDUCED_HARDWARE */

        /* Miscellaneous global handlers */

        acpi_os_printf("\nMiscellaneous Global Handlers:\n");

        for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_gbl_handler_list); i++) {
                acpi_os_printf(ACPI_HANDLER_NAME_STRING,
                               acpi_gbl_handler_list[i].name);

                if (acpi_gbl_handler_list[i].handler) {
                        acpi_os_printf(ACPI_HANDLER_PRESENT_STRING, "User",
                                       acpi_gbl_handler_list[i].handler);
                } else {
                        acpi_os_printf(ACPI_HANDLER_NOT_PRESENT_STRING, "None");
                }
        }

        /* Other handlers that are installed throughout the namespace */

        acpi_os_printf("\nOperation Region Handlers for specific devices:\n");

        (void)acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
                                  ACPI_UINT32_MAX,
                                  acpi_db_display_non_root_handlers, NULL, NULL,
                                  NULL);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_display_non_root_handlers
 *
 * PARAMETERS:  acpi_walk_callback
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Display information about all handlers installed for a
 *              device object.
 *
 ******************************************************************************/

static acpi_status
acpi_db_display_non_root_handlers(acpi_handle obj_handle,
                                  u32 nesting_level,
                                  void *context, void **return_value)
{
        struct acpi_namespace_node *node =
            ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
        union acpi_operand_object *obj_desc;
        union acpi_operand_object *handler_obj;
        char *pathname;

        obj_desc = acpi_ns_get_attached_object(node);
        if (!obj_desc) {
                return (AE_OK);
        }

        pathname = acpi_ns_get_normalized_pathname(node, TRUE);
        if (!pathname) {
                return (AE_OK);
        }

        /* Display all handlers associated with this device */

        handler_obj = obj_desc->common_notify.handler;
        while (handler_obj) {
                acpi_os_printf(ACPI_PREDEFINED_PREFIX,
                               acpi_ut_get_region_name((u8)handler_obj->
                                                       address_space.space_id),
                               handler_obj->address_space.space_id);

                acpi_os_printf(ACPI_HANDLER_PRESENT_STRING2,
                               (handler_obj->address_space.handler_flags &
                                ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) ? "Default"
                               : "User", handler_obj->address_space.handler);

                acpi_os_printf(" Device Name: %s (%p)\n", pathname, node);

                handler_obj = handler_obj->address_space.next;
        }

        ACPI_FREE(pathname);
        return (AE_OK);
}