[POWERPC] PS3: Sys-manager Wake-on-LAN support

Add Wake-on-LAN support to the PS3 system-manager.  Other OS WOL
support was introduced in PS3 system firmware 2.20.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

drivers/ps3/ps3-sys-manager.c

@@ -188,6 +188,7 @@ enum ps3_sys_manager_next_op {
  * controller, and bluetooth controller.
  * @PS3_SM_WAKE_RTC:
  * @PS3_SM_WAKE_RTC_ERROR:
+ * @PS3_SM_WAKE_W_O_L: Ether or wireless LAN.
  * @PS3_SM_WAKE_P_O_R: Power on reset.
  *
  * Additional wakeup sources when specifying PS3_SM_NEXT_OP_SYS_SHUTDOWN.
@@ -201,9 +202,18 @@ enum ps3_sys_manager_wake_source {
 	PS3_SM_WAKE_DEFAULT   = 0,
 	PS3_SM_WAKE_RTC       = 0x00000040,
 	PS3_SM_WAKE_RTC_ERROR = 0x00000080,
+	PS3_SM_WAKE_W_O_L     = 0x00000400,
 	PS3_SM_WAKE_P_O_R     = 0x80000000,
 };
 
+/**
+ * user_wake_sources - User specified wakeup sources.
+ *
+ * Logical OR of enum ps3_sys_manager_wake_source types.
+ */
+
+static u32 user_wake_sources = PS3_SM_WAKE_DEFAULT;
+
 /**
  * enum ps3_sys_manager_cmd - Command from system manager to guest.
  *
@@ -619,7 +629,7 @@ static void ps3_sys_manager_final_power_off(struct ps3_system_bus_device *dev)
 	ps3_vuart_cancel_async(dev);
 
 	ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_SYS_SHUTDOWN,
-		PS3_SM_WAKE_DEFAULT);
+		user_wake_sources);
 
 	ps3_sys_manager_fin(dev);
 }
@@ -652,11 +662,43 @@ static void ps3_sys_manager_final_restart(struct ps3_system_bus_device *dev)
 
 	ps3_sys_manager_send_attr(dev, 0);
 	ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_SYS_REBOOT,
-		PS3_SM_WAKE_DEFAULT);
+		user_wake_sources);
 
 	ps3_sys_manager_fin(dev);
 }
 
+/**
+ * ps3_sys_manager_get_wol - Get wake-on-lan setting.
+ */
+
+int ps3_sys_manager_get_wol(void)
+{
+	pr_debug("%s:%d\n", __func__, __LINE__);
+
+	return (user_wake_sources & PS3_SM_WAKE_W_O_L) != 0;
+}
+EXPORT_SYMBOL_GPL(ps3_sys_manager_get_wol);
+
+/**
+ * ps3_sys_manager_set_wol - Set wake-on-lan setting.
+ */
+
+void ps3_sys_manager_set_wol(int state)
+{
+	static DEFINE_MUTEX(mutex);
+
+	mutex_lock(&mutex);
+
+	pr_debug("%s:%d: %d\n", __func__, __LINE__, state);
+
+	if (state)
+		user_wake_sources |= PS3_SM_WAKE_W_O_L;
+	else
+		user_wake_sources &= ~PS3_SM_WAKE_W_O_L;
+	mutex_unlock(&mutex);
+}
+EXPORT_SYMBOL_GPL(ps3_sys_manager_set_wol);
+
 /**
  * ps3_sys_manager_work - Asynchronous read handler.
  *

include/asm-powerpc/ps3.h

@@ -437,6 +437,8 @@ void ps3_sys_manager_register_ops(const struct ps3_sys_manager_ops *ops);
 void __noreturn ps3_sys_manager_power_off(void);
 void __noreturn ps3_sys_manager_restart(void);
 void __noreturn ps3_sys_manager_halt(void);
+int ps3_sys_manager_get_wol(void);
+void ps3_sys_manager_set_wol(int state);
 
 struct ps3_prealloc {
     const char *name;