From 5fd033288a86676045d9e16243dfc5f988013371 Mon Sep 17 00:00:00 2001
From: Erik Schmauss <erik.schmauss@intel.com>
Date: Fri, 25 Oct 2019 14:36:55 -0700
Subject: ACPICA: debugger: add command to dump all fields of particular
 subtype

In acpiexec, this can be invoked by typing "fields" followed by a
number representing the address space ID of that field.

Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/dbinput.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'drivers/acpi/acpica/dbinput.c')

diff --git a/drivers/acpi/acpica/dbinput.c b/drivers/acpi/acpica/dbinput.c
index 95738313916b..44d6d7246e6e 100644
--- a/drivers/acpi/acpica/dbinput.c
+++ b/drivers/acpi/acpica/dbinput.c
@@ -50,6 +50,7 @@ enum acpi_ex_debugger_commands {
 	CMD_EVALUATE,
 	CMD_EXECUTE,
 	CMD_EXIT,
+	CMD_FIELDS,
 	CMD_FIND,
 	CMD_GO,
 	CMD_HANDLERS,
@@ -127,6 +128,7 @@ static const struct acpi_db_command_info acpi_gbl_db_commands[] = {
 	{"EVALUATE", 1},
 	{"EXECUTE", 1},
 	{"EXIT", 0},
+	{"FIELDS", 1},
 	{"FIND", 1},
 	{"GO", 0},
 	{"HANDLERS", 0},
@@ -200,6 +202,8 @@ static const struct acpi_db_command_help acpi_gbl_db_command_help[] = {
 	 "Find ACPI name(s) with wildcards\n"},
 	{1, "  Integrity", "Validate namespace integrity\n"},
 	{1, "  Methods", "Display list of loaded control methods\n"},
+	{1, "  Fields <AddressSpaceId>",
+	 "Display list of loaded field units by space ID\n"},
 	{1, "  Namespace [Object] [Depth]",
 	 "Display loaded namespace tree/subtree\n"},
 	{1, "  Notify <Object> <Value>", "Send a notification on Object\n"},
@@ -674,6 +678,7 @@ acpi_db_command_dispatch(char *input_buffer,
 			 union acpi_parse_object *op)
 {
 	u32 temp;
+	u64 temp64;
 	u32 command_index;
 	u32 param_count;
 	char *command_line;
@@ -789,6 +794,21 @@ acpi_db_command_dispatch(char *input_buffer,
 		status = acpi_db_find_name_in_namespace(acpi_gbl_db_args[1]);
 		break;
 
+	case CMD_FIELDS:
+
+		status = acpi_ut_strtoul64(acpi_gbl_db_args[1], &temp64);
+
+		if (ACPI_FAILURE(status)
+		    || temp64 >= ACPI_NUM_PREDEFINED_REGIONS) {
+			acpi_os_printf
+			    ("Invalid adress space ID: must be between 0 and %u inclusive\n",
+			     ACPI_NUM_PREDEFINED_REGIONS - 1);
+			return (AE_OK);
+		}
+
+		status = acpi_db_display_fields((u32)temp64);
+		break;
+
 	case CMD_GO:
 
 		acpi_gbl_cm_single_step = FALSE;
-- 
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