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path: root/drivers/acpi/utilities/utglobal.c
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Diffstat (limited to 'drivers/acpi/utilities/utglobal.c')
-rw-r--r--drivers/acpi/utilities/utglobal.c133
1 files changed, 71 insertions, 62 deletions
diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index 25b0f8ae1bc6..4146019b543f 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -44,7 +44,6 @@
#define DEFINE_ACPI_GLOBALS
#include <linux/module.h>
-
#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
@@ -52,13 +51,14 @@
ACPI_MODULE_NAME ("utglobal")
-/******************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_format_exception
*
* PARAMETERS: Status - The acpi_status code to be formatted
*
- * RETURN: A string containing the exception text
+ * RETURN: A string containing the exception text. A valid pointer is
+ * always returned.
*
* DESCRIPTION: This function translates an ACPI exception into an ASCII string.
*
@@ -68,8 +68,8 @@ const char *
acpi_format_exception (
acpi_status status)
{
- const char *exception = "UNKNOWN_STATUS_CODE";
acpi_status sub_status;
+ const char *exception = NULL;
ACPI_FUNCTION_NAME ("format_exception");
@@ -82,57 +82,55 @@ acpi_format_exception (
if (sub_status <= AE_CODE_ENV_MAX) {
exception = acpi_gbl_exception_names_env [sub_status];
- break;
}
- goto unknown;
+ break;
case AE_CODE_PROGRAMMER:
if (sub_status <= AE_CODE_PGM_MAX) {
exception = acpi_gbl_exception_names_pgm [sub_status -1];
- break;
}
- goto unknown;
+ break;
case AE_CODE_ACPI_TABLES:
if (sub_status <= AE_CODE_TBL_MAX) {
exception = acpi_gbl_exception_names_tbl [sub_status -1];
- break;
}
- goto unknown;
+ break;
case AE_CODE_AML:
if (sub_status <= AE_CODE_AML_MAX) {
exception = acpi_gbl_exception_names_aml [sub_status -1];
- break;
}
- goto unknown;
+ break;
case AE_CODE_CONTROL:
if (sub_status <= AE_CODE_CTRL_MAX) {
exception = acpi_gbl_exception_names_ctrl [sub_status -1];
- break;
}
- goto unknown;
+ break;
default:
- goto unknown;
+ break;
}
+ if (!exception) {
+ /* Exception code was not recognized */
- return ((const char *) exception);
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Unknown exception code: 0x%8.8X\n", status));
-unknown:
+ return ((const char *) "UNKNOWN_STATUS_CODE");
+ }
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown exception code: 0x%8.8X\n", status));
return ((const char *) exception);
}
-/******************************************************************************
+/*******************************************************************************
*
* Static global variable initialization.
*
@@ -212,13 +210,12 @@ const char *acpi_gbl_valid_osi_strings[ACPI_NUM_OSI_STR
};
-/******************************************************************************
+/*******************************************************************************
*
* Namespace globals
*
******************************************************************************/
-
/*
* Predefined ACPI Names (Built-in to the Interpreter)
*
@@ -241,9 +238,11 @@ const struct acpi_predefined_names acpi_gbl_pre_defined_names[] =
#if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
{"_OSI", ACPI_TYPE_METHOD, (char *) 1},
#endif
- {NULL, ACPI_TYPE_ANY, NULL} /* Table terminator */
-};
+ /* Table terminator */
+
+ {NULL, ACPI_TYPE_ANY, NULL}
+};
/*
* Properties of the ACPI Object Types, both internal and external.
@@ -288,22 +287,25 @@ const u8 acpi_gbl_ns_properties[] =
/* Hex to ASCII conversion table */
static const char acpi_gbl_hex_to_ascii[] =
- {'0','1','2','3','4','5','6','7',
- '8','9','A','B','C','D','E','F'};
+{
+ '0','1','2','3','4','5','6','7',
+ '8','9','A','B','C','D','E','F'
+};
+
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ut_hex_to_ascii_char
*
* PARAMETERS: Integer - Contains the hex digit
* Position - bit position of the digit within the
- * integer
+ * integer (multiple of 4)
*
- * RETURN: Ascii character
+ * RETURN: The converted Ascii character
*
- * DESCRIPTION: Convert a hex digit to an ascii character
+ * DESCRIPTION: Convert a hex digit to an Ascii character
*
- ****************************************************************************/
+ ******************************************************************************/
char
acpi_ut_hex_to_ascii_char (
@@ -315,7 +317,7 @@ acpi_ut_hex_to_ascii_char (
}
-/******************************************************************************
+/*******************************************************************************
*
* Table name globals
*
@@ -324,7 +326,7 @@ acpi_ut_hex_to_ascii_char (
* that are not used by the subsystem are simply ignored.
*
* Do NOT add any table to this list that is not consumed directly by this
- * subsystem.
+ * subsystem (No MADT, ECDT, SBST, etc.)
*
******************************************************************************/
@@ -391,7 +393,7 @@ struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVE
/* ACPI_EVENT_RTC */ {ACPI_BITREG_RT_CLOCK_STATUS, ACPI_BITREG_RT_CLOCK_ENABLE, ACPI_BITMASK_RT_CLOCK_STATUS, ACPI_BITMASK_RT_CLOCK_ENABLE},
};
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ut_get_region_name
*
@@ -401,7 +403,7 @@ struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVE
*
* DESCRIPTION: Translate a Space ID into a name string (Debug only)
*
- ****************************************************************************/
+ ******************************************************************************/
/* Region type decoding */
@@ -429,7 +431,6 @@ acpi_ut_get_region_name (
{
return ("user_defined_region");
}
-
else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS)
{
return ("invalid_space_id");
@@ -439,7 +440,7 @@ acpi_ut_get_region_name (
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ut_get_event_name
*
@@ -449,7 +450,7 @@ acpi_ut_get_region_name (
*
* DESCRIPTION: Translate a Event ID into a name string (Debug only)
*
- ****************************************************************************/
+ ******************************************************************************/
/* Event type decoding */
@@ -477,7 +478,7 @@ acpi_ut_get_event_name (
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ut_get_type_name
*
@@ -487,20 +488,21 @@ acpi_ut_get_event_name (
*
* DESCRIPTION: Translate a Type ID into a name string (Debug only)
*
- ****************************************************************************/
+ ******************************************************************************/
/*
* Elements of acpi_gbl_ns_type_names below must match
* one-to-one with values of acpi_object_type
*
- * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching; when
- * stored in a table it really means that we have thus far seen no evidence to
- * indicate what type is actually going to be stored for this entry.
+ * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
+ * when stored in a table it really means that we have thus far seen no
+ * evidence to indicate what type is actually going to be stored for this entry.
*/
static const char acpi_gbl_bad_type[] = "UNDEFINED";
-#define TYPE_NAME_LENGTH 12 /* Maximum length of each string */
-static const char *acpi_gbl_ns_type_names[] = /* printable names of ACPI types */
+/* Printable names of the ACPI object types */
+
+static const char *acpi_gbl_ns_type_names[] =
{
/* 00 */ "Untyped",
/* 01 */ "Integer",
@@ -564,7 +566,7 @@ acpi_ut_get_object_type_name (
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ut_get_node_name
*
@@ -574,7 +576,7 @@ acpi_ut_get_object_type_name (
*
* DESCRIPTION: Validate the node and return the node's ACPI name.
*
- ****************************************************************************/
+ ******************************************************************************/
char *
acpi_ut_get_node_name (
@@ -618,7 +620,7 @@ acpi_ut_get_node_name (
}
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ut_get_descriptor_name
*
@@ -628,9 +630,11 @@ acpi_ut_get_node_name (
*
* DESCRIPTION: Validate object and return the descriptor type
*
- ****************************************************************************/
+ ******************************************************************************/
+
+/* Printable names of object descriptor types */
-static const char *acpi_gbl_desc_type_names[] = /* printable names of descriptor types */
+static const char *acpi_gbl_desc_type_names[] =
{
/* 00 */ "Invalid",
/* 01 */ "Cached",
@@ -676,17 +680,18 @@ acpi_ut_get_descriptor_name (
* Strings and procedures used for debug only
*/
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ut_get_mutex_name
*
- * PARAMETERS: None.
+ * PARAMETERS: mutex_id - The predefined ID for this mutex.
*
- * RETURN: Status
+ * RETURN: String containing the name of the mutex. Always returns a valid
+ * pointer.
*
* DESCRIPTION: Translate a mutex ID into a name string (Debug only)
*
- ****************************************************************************/
+ ******************************************************************************/
char *
acpi_ut_get_mutex_name (
@@ -700,21 +705,20 @@ acpi_ut_get_mutex_name (
return (acpi_gbl_mutex_names[mutex_id]);
}
-
#endif
-/*****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ut_valid_object_type
*
* PARAMETERS: Type - Object type to be validated
*
- * RETURN: TRUE if valid object type
+ * RETURN: TRUE if valid object type, FALSE otherwise
*
* DESCRIPTION: Validate an object type
*
- ****************************************************************************/
+ ******************************************************************************/
u8
acpi_ut_valid_object_type (
@@ -732,7 +736,7 @@ acpi_ut_valid_object_type (
}
-/****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ut_allocate_owner_id
*
@@ -740,7 +744,10 @@ acpi_ut_valid_object_type (
*
* DESCRIPTION: Allocate a table or method owner id
*
- ***************************************************************************/
+ * NOTE: this algorithm has a wraparound problem at 64_k method invocations, and
+ * should be revisited (TBD)
+ *
+ ******************************************************************************/
acpi_owner_id
acpi_ut_allocate_owner_id (
@@ -796,16 +803,18 @@ acpi_ut_allocate_owner_id (
}
-/****************************************************************************
+/*******************************************************************************
*
* FUNCTION: acpi_ut_init_globals
*
- * PARAMETERS: none
+ * PARAMETERS: None
+ *
+ * RETURN: None
*
* DESCRIPTION: Init library globals. All globals that require specific
* initialization should be initialized here!
*
- ***************************************************************************/
+ ******************************************************************************/
void
acpi_ut_init_globals (
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-17 02:48:55 +0300