ACPICA: Update for new Notify values

Implemented several changes for Notify handling: Added support
for new Notify values (ACPI 2.0+) and improved the Notify debug
output. Notify on PowerResource objects is no longer allowed,
as per the ACPI specification.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c
index 4e7a13a..16cf270 100644 (file)
--- a/drivers/acpi/events/evmisc.c
+++ b/drivers/acpi/events/evmisc.c
@@ -49,22 +49,7 @@
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evmisc")
 
-/* Names for Notify() values, used for debug output */
-#ifdef ACPI_DEBUG_OUTPUT
-static const char *acpi_notify_value_names[] = {
-       "Bus Check",
-       "Device Check",
-       "Device Wake",
-       "Eject Request",
-       "Device Check Light",
-       "Frequency Mismatch",
-       "Bus Mode Mismatch",
-       "Power Fault"
-};
-#endif
-
 /* Pointer to FACS needed for the Global Lock */
-
 static struct acpi_table_facs *facs = NULL;
 
 /* Local prototypes */
@@ -94,7 +79,6 @@ u8 acpi_ev_is_notify_object(struct acpi_namespace_node *node)
        switch (node->type) {
        case ACPI_TYPE_DEVICE:
        case ACPI_TYPE_PROCESSOR:
-       case ACPI_TYPE_POWER:
        case ACPI_TYPE_THERMAL:
                /*
                 * These are the ONLY objects that can receive ACPI notifications
@@ -139,17 +123,9 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
         *   initiate soft-off or sleep operation?
         */
        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                         "Dispatching Notify(%X) on node %p\n", notify_value,
-                         node));
-
-       if (notify_value <= 7) {
-               ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notify value: %s\n",
-                                 acpi_notify_value_names[notify_value]));
-       } else {
-               ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                 "Notify value: 0x%2.2X **Device Specific**\n",
-                                 notify_value));
-       }
+                         "Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n",
+                         acpi_ut_get_node_name(node), node, notify_value,
+                         acpi_ut_get_notify_name(notify_value)));
 
        /* Get the notify object attached to the NS Node */
 
@@ -159,10 +135,12 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
                /* We have the notify object, Get the right handler */
 
                switch (node->type) {
+
+                       /* Notify allowed only on these types */
+
                case ACPI_TYPE_DEVICE:
                case ACPI_TYPE_THERMAL:
                case ACPI_TYPE_PROCESSOR:
-               case ACPI_TYPE_POWER:
 
                        if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
                                handler_obj =
@@ -179,8 +157,13 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
                }
        }
 
-       /* If there is any handler to run, schedule the dispatcher */
-
+       /*
+        * If there is any handler to run, schedule the dispatcher.
+        * Check for:
+        * 1) Global system notify handler
+        * 2) Global device notify handler
+        * 3) Per-device notify handler
+        */
        if ((acpi_gbl_system_notify.handler
             && (notify_value <= ACPI_MAX_SYS_NOTIFY))
            || (acpi_gbl_device_notify.handler
@@ -190,6 +173,13 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
                        return (AE_NO_MEMORY);
                }
 
+               if (!handler_obj) {
+                       ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                                         "Executing system notify handler for Notify (%4.4s, %X) node %p\n",
+                                         acpi_ut_get_node_name(node),
+                                         notify_value, node));
+               }
+
                notify_info->common.descriptor_type =
                    ACPI_DESC_TYPE_STATE_NOTIFY;
                notify_info->notify.node = node;
@@ -202,15 +192,12 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
                if (ACPI_FAILURE(status)) {
                        acpi_ut_delete_generic_state(notify_info);
                }
-       }
-
-       if (!handler_obj) {
+       } else {
                /*
-                * There is no per-device notify handler for this device.
-                * This may or may not be a problem.
+                * There is no notify handler (per-device or system) for this device.
                 */
                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                 "No notify handler for Notify(%4.4s, %X) node %p\n",
+                                 "No notify handler for Notify (%4.4s, %X) node %p\n",
                                  acpi_ut_get_node_name(node), notify_value,
                                  node));
        }

diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index d2097de..d0226fe 100644 (file)
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -602,6 +602,48 @@ char *acpi_ut_get_mutex_name(u32 mutex_id)
 
        return (acpi_gbl_mutex_names[mutex_id]);
 }
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_notify_name
+ *
+ * PARAMETERS:  notify_value    - Value from the Notify() request
+ *
+ * RETURN:      String corresponding to the Notify Value.
+ *
+ * DESCRIPTION: Translate a Notify Value to a notify namestring.
+ *
+ ******************************************************************************/
+
+/* Names for Notify() values, used for debug output */
+
+static const char *acpi_gbl_notify_value_names[] = {
+       "Bus Check",
+       "Device Check",
+       "Device Wake",
+       "Eject Request",
+       "Device Check Light",
+       "Frequency Mismatch",
+       "Bus Mode Mismatch",
+       "Power Fault",
+       "Capabilities Check",
+       "Device PLD Check",
+       "Reserved",
+       "System Locality Update"
+};
+
+const char *acpi_ut_get_notify_name(u32 notify_value)
+{
+
+       if (notify_value <= ACPI_NOTIFY_MAX) {
+               return (acpi_gbl_notify_value_names[notify_value]);
+       } else if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
+               return ("Reserved");
+       } else {                /* Greater or equal to 0x80 */
+
+               return ("**Device Specific**");
+       }
+}
 #endif
 
 /*******************************************************************************

diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 75ec153..cc24cef 100644 (file)
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -402,14 +402,20 @@ typedef unsigned long long acpi_integer;
 /*
  * Standard notify values
  */
-#define ACPI_NOTIFY_BUS_CHECK           (u8) 0
-#define ACPI_NOTIFY_DEVICE_CHECK        (u8) 1
-#define ACPI_NOTIFY_DEVICE_WAKE         (u8) 2
-#define ACPI_NOTIFY_EJECT_REQUEST       (u8) 3
-#define ACPI_NOTIFY_DEVICE_CHECK_LIGHT  (u8) 4
-#define ACPI_NOTIFY_FREQUENCY_MISMATCH  (u8) 5
-#define ACPI_NOTIFY_BUS_MODE_MISMATCH   (u8) 6
-#define ACPI_NOTIFY_POWER_FAULT         (u8) 7
+#define ACPI_NOTIFY_BUS_CHECK           (u8) 0x00
+#define ACPI_NOTIFY_DEVICE_CHECK        (u8) 0x01
+#define ACPI_NOTIFY_DEVICE_WAKE         (u8) 0x02
+#define ACPI_NOTIFY_EJECT_REQUEST       (u8) 0x03
+#define ACPI_NOTIFY_DEVICE_CHECK_LIGHT  (u8) 0x04
+#define ACPI_NOTIFY_FREQUENCY_MISMATCH  (u8) 0x05
+#define ACPI_NOTIFY_BUS_MODE_MISMATCH   (u8) 0x06
+#define ACPI_NOTIFY_POWER_FAULT         (u8) 0x07
+#define ACPI_NOTIFY_CAPABILITIES_CHECK  (u8) 0x08
+#define ACPI_NOTIFY_DEVICE_PLD_CHECK    (u8) 0x09
+#define ACPI_NOTIFY_RESERVED            (u8) 0x0A
+#define ACPI_NOTIFY_LOCALITY_UPDATE     (u8) 0x0B
+
+#define ACPI_NOTIFY_MAX                 0x0B
 
 /*
  * Types associated with ACPI names and objects.  The first group of
@@ -584,7 +590,7 @@ typedef u32 acpi_event_status;
 
 #define ACPI_SYSTEM_NOTIFY              0x1
 #define ACPI_DEVICE_NOTIFY              0x2
-#define ACPI_ALL_NOTIFY                 0x3
+#define ACPI_ALL_NOTIFY                 (ACPI_SYSTEM_NOTIFY | ACPI_DEVICE_NOTIFY)
 #define ACPI_MAX_NOTIFY_HANDLER_TYPE    0x3
 
 #define ACPI_MAX_SYS_NOTIFY             0x7f

diff --git a/include/acpi/acutils.h b/include/acpi/acutils.h
index a291854..26115da 100644 (file)
--- a/include/acpi/acutils.h
+++ b/include/acpi/acutils.h
@@ -116,6 +116,8 @@ void acpi_ut_init_globals(void);
 
 char *acpi_ut_get_mutex_name(u32 mutex_id);
 
+const char *acpi_ut_get_notify_name(u32 notify_value);
+
 #endif
 
 char *acpi_ut_get_type_name(acpi_object_type type);