[POWERPC] PS3: System manager support

Add PS3 system manager support and the ppc_md routines restart() and power_off(). The system manager provides an event notification mechanism for reporting events like thermal alert and button presses. It also provides support to control system shutdown and startup. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>

[POWERPC] PS3: System manager support
Add PS3 system manager support and the ppc_md routines restart() and power_off(). The system manager provides an event notification mechanism for reporting events like thermal alert and button presses. It also provides support to control system shutdown and startup. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Geoff Levand · Paul Mackerras
1 parent ea1547d311
Showing 5 changed files with 643 additions and 4 deletions Side-by-side Diff
arch/powerpc/platforms/ps3/Kconfig
arch/powerpc/platforms/ps3/setup.c
drivers/ps3/Makefile
drivers/ps3/sys-manager.c
include/asm-powerpc/ps3.h
@@ -62,5 +62,15 @@
 	  This support is required for graphics and sound. In
 	  general, all users will say Y or M.
  
+config PS3_SYS_MANAGER
+	bool "PS3 System Manager driver"
+	select PS3_VUART
+	default y
+	help
+	  Include support for the PS3 System Manager.
+
+	  This support is required for system control.  In
+	  general, all users will say Y.
+
 endmenu
@@ -42,6 +42,10 @@
 #define DBG(fmt...) do{if(0)printk(fmt);}while(0)
 #endif
  
+#if !defined(CONFIG_SMP)
+static void smp_send_stop(void) {}
+#endif
+
 int ps3_get_firmware_version(union ps3_firmware_version *v)
 {
 	int result = lv1_get_version_info(&v->raw);
  
  
  
  
@@ -66,22 +70,35 @@
 	lv1_pause(0);
 }
  
+static void ps3_restart(char *cmd)
+{
+	DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
+
+	smp_send_stop();
+	ps3_sys_manager_restart(); /* never returns */
+}
+
+static void ps3_power_off(void)
+{
+	DBG("%s:%d\n", __func__, __LINE__);
+
+	smp_send_stop();
+	ps3_sys_manager_power_off(); /* never returns */
+}
+
 static void ps3_panic(char *str)
 {
 	DBG("%s:%d %s\n", __func__, __LINE__, str);
  
-#ifdef CONFIG_SMP
 	smp_send_stop();
-#endif
 	printk("\n");
 	printk("   System does not reboot automatically.\n");
 	printk("   Please press POWER button.\n");
 	printk("\n");
  
-	for (;;) ;
+	while(1);
 }
  
-
 static void prealloc(struct ps3_prealloc *p)
 {
 	if (!p->size)
@@ -219,6 +236,8 @@
 	.get_rtc_time			= ps3_get_rtc_time,
 	.calibrate_decr			= ps3_calibrate_decr,
 	.progress			= ps3_progress,
+	.restart			= ps3_restart,
+	.power_off			= ps3_power_off,
 #if defined(CONFIG_KEXEC)
 	.kexec_cpu_down			= ps3_kexec_cpu_down,
 	.machine_kexec			= ps3_machine_kexec,
 obj-$(CONFIG_PS3_VUART) += vuart.o
 obj-$(CONFIG_PS3_PS3AV) += ps3av.o ps3av_cmd.o
+obj-$(CONFIG_PS3_SYS_MANAGER) += sys-manager.o
+/*
+ *  PS3 System Manager.
+ *
+ *  Copyright (C) 2007 Sony Computer Entertainment Inc.
+ *  Copyright 2007 Sony Corp.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/workqueue.h>
+#include <linux/reboot.h>
+#include <asm/ps3.h>
+#include "vuart.h"
+
+MODULE_AUTHOR("Sony Corporation");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("PS3 System Manager");
+
+/**
+ * ps3_sys_manager - PS3 system manager driver.
+ *
+ * The system manager provides an asyncronous system event notification
+ * mechanism for reporting events like thermal alert and button presses to
+ * guests.  It also provides support to control system shutdown and startup.
+ *
+ * The actual system manager is implemented as an application running in the
+ * system policy module in lpar_1.  Guests communicate with the system manager
+ * through port 2 of the vuart using a simple packet message protocol.
+ * Messages are comprised of a fixed field header followed by a message
+ * specific payload.
+ */
+
+/**
+ * struct ps3_sys_manager_header - System manager message header.
+ * @version: Header version, currently 1.
+ * @size: Header size in bytes, curently 16.
+ * @payload_size: Message payload size in bytes.
+ * @service_id: Message type, one of enum ps3_sys_manager_service_id.
+ */
+
+struct ps3_sys_manager_header {
+	/* version 1 */
+	u8 version;
+	u8 size;
+	u16 reserved_1;
+	u32 payload_size;
+	u16 service_id;
+	u16 reserved_2[3];
+};
+
+/**
+ * @PS3_SM_RX_MSG_LEN - System manager received message length.
+ *
+ * Currently all messages received from the system manager are the same length
+ * (16 bytes header + 16 bytes payload = 32 bytes).  This knowlege is used to
+ * simplify the logic.
+ */
+
+enum {
+	PS3_SM_RX_MSG_LEN = 32,
+};
+
+/**
+ * enum ps3_sys_manager_service_id - Message header service_id.
+ * @PS3_SM_SERVICE_ID_REQUEST:      guest --> sys_manager.
+ * @PS3_SM_SERVICE_ID_COMMAND:      guest <-- sys_manager.
+ * @PS3_SM_SERVICE_ID_RESPONSE:     guest --> sys_manager.
+ * @PS3_SM_SERVICE_ID_SET_ATTR:     guest --> sys_manager.
+ * @PS3_SM_SERVICE_ID_EXTERN_EVENT: guest <-- sys_manager.
+ * @PS3_SM_SERVICE_ID_SET_NEXT_OP:  guest --> sys_manager.
+ */
+
+enum ps3_sys_manager_service_id {
+	/* version 1 */
+	PS3_SM_SERVICE_ID_REQUEST = 1,
+	PS3_SM_SERVICE_ID_RESPONSE = 2,
+	PS3_SM_SERVICE_ID_COMMAND = 3,
+	PS3_SM_SERVICE_ID_EXTERN_EVENT = 4,
+	PS3_SM_SERVICE_ID_SET_NEXT_OP = 5,
+	PS3_SM_SERVICE_ID_SET_ATTR = 8,
+};
+
+/**
+ * enum ps3_sys_manager_attr - Notification attribute (bit position mask).
+ * @PS3_SM_ATTR_POWER: Power button.
+ * @PS3_SM_ATTR_RESET: Reset button, not available on retail console.
+ * @PS3_SM_ATTR_THERMAL: Sytem thermal alert.
+ * @PS3_SM_ATTR_CONTROLLER: Remote controller event.
+ * @PS3_SM_ATTR_ALL: Logical OR of all.
+ *
+ * The guest tells the system manager which events it is interested in receiving
+ * notice of by sending the system manager a logical OR of notification
+ * attributes via the ps3_sys_manager_send_attr() routine.
+ */
+
+enum ps3_sys_manager_attr {
+	/* version 1 */
+	PS3_SM_ATTR_POWER = 1,
+	PS3_SM_ATTR_RESET = 2,
+	PS3_SM_ATTR_THERMAL = 4,
+	PS3_SM_ATTR_CONTROLLER = 8, /* bogus? */
+	PS3_SM_ATTR_ALL = 0x0f,
+};
+
+/**
+ * enum ps3_sys_manager_event - External event type, reported by system manager.
+ * @PS3_SM_EVENT_POWER_PRESSED: payload.value not used.
+ * @PS3_SM_EVENT_POWER_RELEASED: payload.value = time pressed in millisec.
+ * @PS3_SM_EVENT_RESET_PRESSED: payload.value not used.
+ * @PS3_SM_EVENT_RESET_RELEASED: payload.value = time pressed in millisec.
+ * @PS3_SM_EVENT_THERMAL_ALERT: payload.value = thermal zone id.
+ * @PS3_SM_EVENT_THERMAL_CLEARED: payload.value = thermal zone id.
+ */
+
+enum ps3_sys_manager_event {
+	/* version 1 */
+	PS3_SM_EVENT_POWER_PRESSED = 3,
+	PS3_SM_EVENT_POWER_RELEASED = 4,
+	PS3_SM_EVENT_RESET_PRESSED = 5,
+	PS3_SM_EVENT_RESET_RELEASED = 6,
+	PS3_SM_EVENT_THERMAL_ALERT = 7,
+	PS3_SM_EVENT_THERMAL_CLEARED = 8,
+	/* no info on controller events */
+};
+
+/**
+ * enum ps3_sys_manager_next_op - Operation to perform after lpar is destroyed.
+ */
+
+enum ps3_sys_manager_next_op {
+	/* version 3 */
+	PS3_SM_NEXT_OP_SYS_SHUTDOWN = 1,
+	PS3_SM_NEXT_OP_SYS_REBOOT = 2,
+	PS3_SM_NEXT_OP_LPAR_REBOOT = 0x82,
+};
+
+/**
+ * enum ps3_sys_manager_wake_source - Next-op wakeup source (bit position mask).
+ * @PS3_SM_WAKE_DEFAULT: Disk insert, power button, eject button, IR
+ * controller, and bluetooth controller.
+ * @PS3_SM_WAKE_RTC:
+ * @PS3_SM_WAKE_RTC_ERROR:
+ * @PS3_SM_WAKE_P_O_R: Power on reset.
+ *
+ * Additional wakeup sources when specifying PS3_SM_NEXT_OP_SYS_SHUTDOWN.
+ * System will always wake from the PS3_SM_WAKE_DEFAULT sources.
+ */
+
+enum ps3_sys_manager_wake_source {
+	/* version 3 */
+	PS3_SM_WAKE_DEFAULT   = 0,
+	PS3_SM_WAKE_RTC       = 0x00000040,
+	PS3_SM_WAKE_RTC_ERROR = 0x00000080,
+	PS3_SM_WAKE_P_O_R     = 0x10000000,
+};
+
+/**
+ * enum ps3_sys_manager_cmd - Command from system manager to guest.
+ *
+ * The guest completes the actions needed, then acks or naks the command via
+ * ps3_sys_manager_send_response().  In the case of @PS3_SM_CMD_SHUTDOWN,
+ * the guest must be fully prepared for a system poweroff prior to acking the
+ * command.
+ */
+
+enum ps3_sys_manager_cmd {
+	/* version 1 */
+	PS3_SM_CMD_SHUTDOWN = 1, /* shutdown guest OS */
+};
+
+/**
+ * ps3_sys_manager_write - Helper to write a two part message to the vuart.
+ *
+ */
+
+static int ps3_sys_manager_write(struct ps3_vuart_port_device *dev,
+	const struct ps3_sys_manager_header *header, const void *payload)
+{
+	int result;
+
+	BUG_ON(header->version != 1);
+	BUG_ON(header->size != 16);
+	BUG_ON(header->payload_size != 8 && header->payload_size != 16);
+	BUG_ON(header->service_id > 8);
+
+	result = ps3_vuart_write(dev, header,
+		sizeof(struct ps3_sys_manager_header));
+
+	if (!result)
+		result = ps3_vuart_write(dev, payload, header->payload_size);
+
+	return result;
+}
+
+/**
+ * ps3_sys_manager_send_attr - Send a 'set attribute' to the system manager.
+ *
+ */
+
+static int ps3_sys_manager_send_attr(struct ps3_vuart_port_device *dev,
+	enum ps3_sys_manager_attr attr)
+{
+	static const struct ps3_sys_manager_header header = {
+		.version = 1,
+		.size = 16,
+		.payload_size = 16,
+		.service_id = PS3_SM_SERVICE_ID_SET_ATTR,
+	};
+	struct {
+		u8 version;
+		u8 reserved_1[3];
+		u32 attribute;
+	} payload;
+
+	BUILD_BUG_ON(sizeof(payload) != 8);
+
+	dev_dbg(&dev->core, "%s:%d: %xh\n", __func__, __LINE__, attr);
+
+	memset(&payload, 0, sizeof(payload));
+	payload.version = 1;
+	payload.attribute = attr;
+
+	return ps3_sys_manager_write(dev, &header, &payload);
+}
+
+/**
+ * ps3_sys_manager_send_next_op - Send a 'set next op' to the system manager.
+ *
+ * Tell the system manager what to do after this lpar is destroyed.
+ */
+
+static int ps3_sys_manager_send_next_op(struct ps3_vuart_port_device *dev,
+	enum ps3_sys_manager_next_op op,
+	enum ps3_sys_manager_wake_source wake_source)
+{
+	static const struct ps3_sys_manager_header header = {
+		.version = 1,
+		.size = 16,
+		.payload_size = 16,
+		.service_id = PS3_SM_SERVICE_ID_SET_NEXT_OP,
+	};
+	struct {
+		u8 version;
+		u8 type;
+		u8 gos_id;
+		u8 reserved_1;
+		u32 wake_source;
+		u8 reserved_2[8];
+	} payload;
+
+	BUILD_BUG_ON(sizeof(payload) != 16);
+
+	dev_dbg(&dev->core, "%s:%d: (%xh)\n", __func__, __LINE__, op);
+
+	memset(&payload, 0, sizeof(payload));
+	payload.version = 3;
+	payload.type = op;
+	payload.gos_id = 3; /* other os */
+	payload.wake_source = wake_source;
+
+	return ps3_sys_manager_write(dev, &header, &payload);
+}
+
+/**
+ * ps3_sys_manager_send_request_shutdown - Send 'request' to the system manager.
+ *
+ * The guest sends this message to request an operation or action of the system
+ * manager.  The reply is a command message from the system manager.  In the
+ * command handler the guest performs the requested operation.  The result of
+ * the command is then communicated back to the system manager with a response
+ * message.
+ *
+ * Currently, the only supported request it the 'shutdown self' request.
+ */
+
+static int ps3_sys_manager_send_request_shutdown(struct ps3_vuart_port_device *dev)
+{
+	static const struct ps3_sys_manager_header header = {
+		.version = 1,
+		.size = 16,
+		.payload_size = 16,
+		.service_id = PS3_SM_SERVICE_ID_REQUEST,
+	};
+	struct {
+		u8 version;
+		u8 type;
+		u8 gos_id;
+		u8 reserved_1[13];
+	} static const payload = {
+		.version = 1,
+		.type = 1, /* shutdown */
+		.gos_id = 0, /* self */
+	};
+
+	BUILD_BUG_ON(sizeof(payload) != 16);
+
+	dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
+
+	return ps3_sys_manager_write(dev, &header, &payload);
+}
+
+/**
+ * ps3_sys_manager_send_response - Send a 'response' to the system manager.
+ * @status: zero = success, others fail.
+ *
+ * The guest sends this message to the system manager to acnowledge success or
+ * failure of a command sent by the system manager.
+ */
+
+static int ps3_sys_manager_send_response(struct ps3_vuart_port_device *dev,
+	u64 status)
+{
+	static const struct ps3_sys_manager_header header = {
+		.version = 1,
+		.size = 16,
+		.payload_size = 16,
+		.service_id = PS3_SM_SERVICE_ID_RESPONSE,
+	};
+	struct {
+		u8 version;
+		u8 reserved_1[3];
+		u8 status;
+		u8 reserved_2[11];
+	} payload;
+
+	BUILD_BUG_ON(sizeof(payload) != 16);
+
+	dev_dbg(&dev->core, "%s:%d: (%s)\n", __func__, __LINE__,
+		(status ? "nak" : "ack"));
+
+	memset(&payload, 0, sizeof(payload));
+	payload.version = 1;
+	payload.status = status;
+
+	return ps3_sys_manager_write(dev, &header, &payload);
+}
+
+/**
+ * ps3_sys_manager_handle_event - Second stage event msg handler.
+ *
+ */
+
+static int ps3_sys_manager_handle_event(struct ps3_vuart_port_device *dev)
+{
+	int result;
+	struct {
+		u8 version;
+		u8 type;
+		u8 reserved_1[2];
+		u32 value;
+		u8 reserved_2[8];
+	} event;
+
+	BUILD_BUG_ON(sizeof(event) != 16);
+
+	result = ps3_vuart_read(dev, &event, sizeof(event));
+	BUG_ON(result);
+
+	if (event.version != 1) {
+		dev_dbg(&dev->core, "%s:%d: unsupported event version (%u)\n",
+			__func__, __LINE__, event.version);
+		return -EIO;
+	}
+
+	switch (event.type) {
+	case PS3_SM_EVENT_POWER_PRESSED:
+		dev_dbg(&dev->core, "%s:%d: POWER_PRESSED\n",
+			__func__, __LINE__);
+		break;
+	case PS3_SM_EVENT_POWER_RELEASED:
+		dev_dbg(&dev->core, "%s:%d: POWER_RELEASED (%u ms)\n",
+			__func__, __LINE__, event.value);
+		kill_cad_pid(SIGINT, 1);
+		break;
+	case PS3_SM_EVENT_THERMAL_ALERT:
+		dev_dbg(&dev->core, "%s:%d: THERMAL_ALERT (zone %u)\n",
+			__func__, __LINE__, event.value);
+		printk(KERN_INFO "PS3 Thermal Alert Zone %u\n", event.value);
+		break;
+	case PS3_SM_EVENT_THERMAL_CLEARED:
+		dev_dbg(&dev->core, "%s:%d: THERMAL_CLEARED (zone %u)\n",
+			__func__, __LINE__, event.value);
+		break;
+	default:
+		dev_dbg(&dev->core, "%s:%d: unknown event (%u)\n",
+			__func__, __LINE__, event.type);
+		return -EIO;
+	}
+
+	return 0;
+}
+/**
+ * ps3_sys_manager_handle_cmd - Second stage command msg handler.
+ *
+ * The system manager sends this in reply to a 'request' message from the guest.
+ */
+
+static int ps3_sys_manager_handle_cmd(struct ps3_vuart_port_device *dev)
+{
+	int result;
+	struct {
+		u8 version;
+		u8 type;
+		u8 reserved_1[14];
+	} cmd;
+
+	BUILD_BUG_ON(sizeof(cmd) != 16);
+
+	dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
+
+	result = ps3_vuart_read(dev, &cmd, sizeof(cmd));
+
+	if(result)
+		return result;
+
+	if (cmd.version != 1) {
+		dev_dbg(&dev->core, "%s:%d: unsupported cmd version (%u)\n",
+			__func__, __LINE__, cmd.version);
+		return -EIO;
+	}
+
+	if (cmd.type != PS3_SM_CMD_SHUTDOWN) {
+		dev_dbg(&dev->core, "%s:%d: unknown cmd (%u)\n",
+			__func__, __LINE__, cmd.type);
+		return -EIO;
+	}
+
+	ps3_sys_manager_send_response(dev, 0);
+	return 0;
+}
+
+/**
+ * ps3_sys_manager_handle_msg - First stage msg handler.
+ *
+ */
+
+static int ps3_sys_manager_handle_msg(struct ps3_vuart_port_device *dev)
+{
+	int result;
+	struct ps3_sys_manager_header header;
+
+	result = ps3_vuart_read(dev, &header,
+		sizeof(struct ps3_sys_manager_header));
+
+	if(result)
+		return result;
+
+	if (header.version != 1) {
+		dev_dbg(&dev->core, "%s:%d: unsupported header version (%u)\n",
+			__func__, __LINE__, header.version);
+		goto fail_header;
+	}
+
+	BUILD_BUG_ON(sizeof(header) != 16);
+	BUG_ON(header.size != 16);
+	BUG_ON(header.payload_size != 16);
+
+	switch (header.service_id) {
+	case PS3_SM_SERVICE_ID_EXTERN_EVENT:
+		dev_dbg(&dev->core, "%s:%d: EVENT\n", __func__, __LINE__);
+		return ps3_sys_manager_handle_event(dev);
+	case PS3_SM_SERVICE_ID_COMMAND:
+		dev_dbg(&dev->core, "%s:%d: COMMAND\n", __func__, __LINE__);
+		return ps3_sys_manager_handle_cmd(dev);
+	default:
+		dev_dbg(&dev->core, "%s:%d: unknown service_id (%u)\n",
+			__func__, __LINE__, header.service_id);
+		break;
+	}
+	goto fail_id;
+
+fail_header:
+	ps3_vuart_clear_rx_bytes(dev, 0);
+	return -EIO;
+fail_id:
+	ps3_vuart_clear_rx_bytes(dev, header.payload_size);
+	return -EIO;
+}
+
+/**
+ * ps3_sys_manager_work - Asyncronous read handler.
+ *
+ * Signaled when a complete message arrives at the vuart port.
+ */
+
+static void ps3_sys_manager_work(struct work_struct *work)
+{
+	struct ps3_vuart_port_device *dev = ps3_vuart_work_to_port_device(work);
+
+	ps3_sys_manager_handle_msg(dev);
+	ps3_vuart_read_async(dev, ps3_sys_manager_work, PS3_SM_RX_MSG_LEN);
+}
+
+struct {
+	struct ps3_vuart_port_device *dev;
+} static drv_priv;
+
+/**
+ * ps3_sys_manager_restart - The final platform machine_restart routine.
+ *
+ * This routine never returns.  The routine disables asyncronous vuart reads
+ * then spins calling ps3_sys_manager_handle_msg() to receive and acknowledge
+ * the shutdown command sent from the system manager.  Soon after the
+ * acknowledgement is sent the lpar is destroyed by the HV.  This routine
+ * should only be called from ps3_restart().
+ */
+
+void ps3_sys_manager_restart(void)
+{
+	struct ps3_vuart_port_device *dev = drv_priv.dev;
+
+	BUG_ON(!drv_priv.dev);
+
+	dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
+
+	ps3_vuart_cancel_async(dev);
+
+	ps3_sys_manager_send_attr(dev, 0);
+	ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_LPAR_REBOOT,
+		PS3_SM_WAKE_DEFAULT);
+	ps3_sys_manager_send_request_shutdown(dev);
+
+	printk(KERN_EMERG "System Halted, OK to turn off power\n");
+
+	while(1)
+		ps3_sys_manager_handle_msg(dev);
+}
+
+/**
+ * ps3_sys_manager_power_off - The final platform machine_power_off routine.
+ *
+ * This routine never returns.  The routine disables asyncronous vuart reads
+ * then spins calling ps3_sys_manager_handle_msg() to receive and acknowledge
+ * the shutdown command sent from the system manager.  Soon after the
+ * acknowledgement is sent the lpar is destroyed by the HV.  This routine
+ * should only be called from ps3_power_off().
+ */
+
+void ps3_sys_manager_power_off(void)
+{
+	struct ps3_vuart_port_device *dev = drv_priv.dev;
+
+	BUG_ON(!drv_priv.dev);
+
+	dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
+
+	ps3_vuart_cancel_async(dev);
+
+	ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_SYS_SHUTDOWN,
+		PS3_SM_WAKE_DEFAULT);
+	ps3_sys_manager_send_request_shutdown(dev);
+
+	printk(KERN_EMERG "System Halted, OK to turn off power\n");
+
+	while(1)
+		ps3_sys_manager_handle_msg(dev);
+}
+
+static int ps3_sys_manager_probe(struct ps3_vuart_port_device *dev)
+{
+	int result;
+
+	dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
+
+	BUG_ON(drv_priv.dev);
+	drv_priv.dev = dev;
+
+	result = ps3_sys_manager_send_attr(dev, PS3_SM_ATTR_ALL);
+	BUG_ON(result);
+
+	result = ps3_vuart_read_async(dev, ps3_sys_manager_work,
+		PS3_SM_RX_MSG_LEN);
+	BUG_ON(result);
+
+	return result;
+}
+
+static struct ps3_vuart_port_driver ps3_sys_manager = {
+	.match_id = PS3_MATCH_ID_SYSTEM_MANAGER,
+	.core = {
+		.name = "ps3_sys_manager",
+	},
+	.probe = ps3_sys_manager_probe,
+};
+
+static int __init ps3_sys_manager_init(void)
+{
+	return ps3_vuart_port_driver_register(&ps3_sys_manager);
+}
+
+module_init(ps3_sys_manager_init);
@@ -370,6 +370,11 @@
  
 int ps3_vuart_port_device_register(struct ps3_vuart_port_device *dev);
  
+/* system manager */
+
+void ps3_sys_manager_restart(void);
+void ps3_sys_manager_power_off(void);
+
 struct ps3_prealloc {
     const char *name;
     void *address;
...	...	@@ -62,5 +62,15 @@
62	62	This support is required for graphics and sound. In
63	63	general, all users will say Y or M.
64	64
	65	+config PS3_SYS_MANAGER
	66	+ bool "PS3 System Manager driver"
	67	+ select PS3_VUART
	68	+ default y
	69	+ help
	70	+ Include support for the PS3 System Manager.
	71	+
	72	+ This support is required for system control. In
	73	+ general, all users will say Y.
	74	+
65	75	endmenu
...	...	@@ -42,6 +42,10 @@
42	42	#define DBG(fmt...) do{if(0)printk(fmt);}while(0)
43	43	#endif
44	44
	45	+#if !defined(CONFIG_SMP)
	46	+static void smp_send_stop(void) {}
	47	+#endif
	48	+
45	49	int ps3_get_firmware_version(union ps3_firmware_version *v)
46	50	{
47	51	int result = lv1_get_version_info(&v->raw);
48	52
49	53
50	54
51	55
...	...	@@ -66,22 +70,35 @@
66	70	lv1_pause(0);
67	71	}
68	72
	73	+static void ps3_restart(char *cmd)
	74	+{
	75	+ DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
	76	+
	77	+ smp_send_stop();
	78	+ ps3_sys_manager_restart(); /* never returns */
	79	+}
	80	+
	81	+static void ps3_power_off(void)
	82	+{
	83	+ DBG("%s:%d\n", __func__, __LINE__);
	84	+
	85	+ smp_send_stop();
	86	+ ps3_sys_manager_power_off(); /* never returns */
	87	+}
	88	+
69	89	static void ps3_panic(char *str)
70	90	{
71	91	DBG("%s:%d %s\n", __func__, __LINE__, str);
72	92
73		-#ifdef CONFIG_SMP
74	93	smp_send_stop();
75		-#endif
76	94	printk("\n");
77	95	printk(" System does not reboot automatically.\n");
78	96	printk(" Please press POWER button.\n");
79	97	printk("\n");
80	98
81		- for (;;) ;
	99	+ while(1);
82	100	}
83	101
84		-
85	102	static void prealloc(struct ps3_prealloc *p)
86	103	{
87	104	if (!p->size)
...	...	@@ -219,6 +236,8 @@
219	236	.get_rtc_time = ps3_get_rtc_time,
220	237	.calibrate_decr = ps3_calibrate_decr,
221	238	.progress = ps3_progress,
	239	+ .restart = ps3_restart,
	240	+ .power_off = ps3_power_off,
222	241	#if defined(CONFIG_KEXEC)
223	242	.kexec_cpu_down = ps3_kexec_cpu_down,
224	243	.machine_kexec = ps3_machine_kexec,
1	1	obj-$(CONFIG_PS3_VUART) += vuart.o
2	2	obj-$(CONFIG_PS3_PS3AV) += ps3av.o ps3av_cmd.o
	3	+obj-$(CONFIG_PS3_SYS_MANAGER) += sys-manager.o
	1	+/*
	2	+ * PS3 System Manager.
	3	+ *
	4	+ * Copyright (C) 2007 Sony Computer Entertainment Inc.
	5	+ * Copyright 2007 Sony Corp.
	6	+ *
	7	+ * This program is free software; you can redistribute it and/or modify
	8	+ * it under the terms of the GNU General Public License as published by
	9	+ * the Free Software Foundation; version 2 of the License.
	10	+ *
	11	+ * This program is distributed in the hope that it will be useful,
	12	+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	+ * GNU General Public License for more details.
	15	+ *
	16	+ * You should have received a copy of the GNU General Public License
	17	+ * along with this program; if not, write to the Free Software
	18	+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	+ */
	20	+
	21	+#include <linux/kernel.h>
	22	+#include <linux/module.h>
	23	+#include <linux/workqueue.h>
	24	+#include <linux/reboot.h>
	25	+#include <asm/ps3.h>
	26	+#include "vuart.h"
	27	+
	28	+MODULE_AUTHOR("Sony Corporation");
	29	+MODULE_LICENSE("GPL v2");
	30	+MODULE_DESCRIPTION("PS3 System Manager");
	31	+
	32	+/**
	33	+ * ps3_sys_manager - PS3 system manager driver.
	34	+ *
	35	+ * The system manager provides an asyncronous system event notification
	36	+ * mechanism for reporting events like thermal alert and button presses to
	37	+ * guests. It also provides support to control system shutdown and startup.
	38	+ *
	39	+ * The actual system manager is implemented as an application running in the
	40	+ * system policy module in lpar_1. Guests communicate with the system manager
	41	+ * through port 2 of the vuart using a simple packet message protocol.
	42	+ * Messages are comprised of a fixed field header followed by a message
	43	+ * specific payload.
	44	+ */
	45	+
	46	+/**
	47	+ * struct ps3_sys_manager_header - System manager message header.
	48	+ * @version: Header version, currently 1.
	49	+ * @size: Header size in bytes, curently 16.
	50	+ * @payload_size: Message payload size in bytes.
	51	+ * @service_id: Message type, one of enum ps3_sys_manager_service_id.
	52	+ */
	53	+
	54	+struct ps3_sys_manager_header {
	55	+ /* version 1 */
	56	+ u8 version;
	57	+ u8 size;
	58	+ u16 reserved_1;
	59	+ u32 payload_size;
	60	+ u16 service_id;
	61	+ u16 reserved_2[3];
	62	+};
	63	+
	64	+/**
	65	+ * @PS3_SM_RX_MSG_LEN - System manager received message length.
	66	+ *
	67	+ * Currently all messages received from the system manager are the same length
	68	+ * (16 bytes header + 16 bytes payload = 32 bytes). This knowlege is used to
	69	+ * simplify the logic.
	70	+ */
	71	+
	72	+enum {
	73	+ PS3_SM_RX_MSG_LEN = 32,
	74	+};
	75	+
	76	+/**
	77	+ * enum ps3_sys_manager_service_id - Message header service_id.
	78	+ * @PS3_SM_SERVICE_ID_REQUEST: guest --> sys_manager.
	79	+ * @PS3_SM_SERVICE_ID_COMMAND: guest <-- sys_manager.
	80	+ * @PS3_SM_SERVICE_ID_RESPONSE: guest --> sys_manager.
	81	+ * @PS3_SM_SERVICE_ID_SET_ATTR: guest --> sys_manager.
	82	+ * @PS3_SM_SERVICE_ID_EXTERN_EVENT: guest <-- sys_manager.
	83	+ * @PS3_SM_SERVICE_ID_SET_NEXT_OP: guest --> sys_manager.
	84	+ */
	85	+
	86	+enum ps3_sys_manager_service_id {
	87	+ /* version 1 */
	88	+ PS3_SM_SERVICE_ID_REQUEST = 1,
	89	+ PS3_SM_SERVICE_ID_RESPONSE = 2,
	90	+ PS3_SM_SERVICE_ID_COMMAND = 3,
	91	+ PS3_SM_SERVICE_ID_EXTERN_EVENT = 4,
	92	+ PS3_SM_SERVICE_ID_SET_NEXT_OP = 5,
	93	+ PS3_SM_SERVICE_ID_SET_ATTR = 8,
	94	+};
	95	+
	96	+/**
	97	+ * enum ps3_sys_manager_attr - Notification attribute (bit position mask).
	98	+ * @PS3_SM_ATTR_POWER: Power button.
	99	+ * @PS3_SM_ATTR_RESET: Reset button, not available on retail console.
	100	+ * @PS3_SM_ATTR_THERMAL: Sytem thermal alert.
	101	+ * @PS3_SM_ATTR_CONTROLLER: Remote controller event.
	102	+ * @PS3_SM_ATTR_ALL: Logical OR of all.
	103	+ *
	104	+ * The guest tells the system manager which events it is interested in receiving
	105	+ * notice of by sending the system manager a logical OR of notification
	106	+ * attributes via the ps3_sys_manager_send_attr() routine.
	107	+ */
	108	+
	109	+enum ps3_sys_manager_attr {
	110	+ /* version 1 */
	111	+ PS3_SM_ATTR_POWER = 1,
	112	+ PS3_SM_ATTR_RESET = 2,
	113	+ PS3_SM_ATTR_THERMAL = 4,
	114	+ PS3_SM_ATTR_CONTROLLER = 8, /* bogus? */
	115	+ PS3_SM_ATTR_ALL = 0x0f,
	116	+};
	117	+
	118	+/**
	119	+ * enum ps3_sys_manager_event - External event type, reported by system manager.
	120	+ * @PS3_SM_EVENT_POWER_PRESSED: payload.value not used.
	121	+ * @PS3_SM_EVENT_POWER_RELEASED: payload.value = time pressed in millisec.
	122	+ * @PS3_SM_EVENT_RESET_PRESSED: payload.value not used.
	123	+ * @PS3_SM_EVENT_RESET_RELEASED: payload.value = time pressed in millisec.
	124	+ * @PS3_SM_EVENT_THERMAL_ALERT: payload.value = thermal zone id.
	125	+ * @PS3_SM_EVENT_THERMAL_CLEARED: payload.value = thermal zone id.
	126	+ */
	127	+
	128	+enum ps3_sys_manager_event {
	129	+ /* version 1 */
	130	+ PS3_SM_EVENT_POWER_PRESSED = 3,
	131	+ PS3_SM_EVENT_POWER_RELEASED = 4,
	132	+ PS3_SM_EVENT_RESET_PRESSED = 5,
	133	+ PS3_SM_EVENT_RESET_RELEASED = 6,
	134	+ PS3_SM_EVENT_THERMAL_ALERT = 7,
	135	+ PS3_SM_EVENT_THERMAL_CLEARED = 8,
	136	+ /* no info on controller events */
	137	+};
	138	+
	139	+/**
	140	+ * enum ps3_sys_manager_next_op - Operation to perform after lpar is destroyed.
	141	+ */
	142	+
	143	+enum ps3_sys_manager_next_op {
	144	+ /* version 3 */
	145	+ PS3_SM_NEXT_OP_SYS_SHUTDOWN = 1,
	146	+ PS3_SM_NEXT_OP_SYS_REBOOT = 2,
	147	+ PS3_SM_NEXT_OP_LPAR_REBOOT = 0x82,
	148	+};
	149	+
	150	+/**
	151	+ * enum ps3_sys_manager_wake_source - Next-op wakeup source (bit position mask).
	152	+ * @PS3_SM_WAKE_DEFAULT: Disk insert, power button, eject button, IR
	153	+ * controller, and bluetooth controller.
	154	+ * @PS3_SM_WAKE_RTC:
	155	+ * @PS3_SM_WAKE_RTC_ERROR:
	156	+ * @PS3_SM_WAKE_P_O_R: Power on reset.
	157	+ *
	158	+ * Additional wakeup sources when specifying PS3_SM_NEXT_OP_SYS_SHUTDOWN.
	159	+ * System will always wake from the PS3_SM_WAKE_DEFAULT sources.
	160	+ */
	161	+
	162	+enum ps3_sys_manager_wake_source {
	163	+ /* version 3 */
	164	+ PS3_SM_WAKE_DEFAULT = 0,
	165	+ PS3_SM_WAKE_RTC = 0x00000040,
	166	+ PS3_SM_WAKE_RTC_ERROR = 0x00000080,
	167	+ PS3_SM_WAKE_P_O_R = 0x10000000,
	168	+};
	169	+
	170	+/**
	171	+ * enum ps3_sys_manager_cmd - Command from system manager to guest.
	172	+ *
	173	+ * The guest completes the actions needed, then acks or naks the command via
	174	+ * ps3_sys_manager_send_response(). In the case of @PS3_SM_CMD_SHUTDOWN,
	175	+ * the guest must be fully prepared for a system poweroff prior to acking the
	176	+ * command.
	177	+ */
	178	+
	179	+enum ps3_sys_manager_cmd {
	180	+ /* version 1 */
	181	+ PS3_SM_CMD_SHUTDOWN = 1, /* shutdown guest OS */
	182	+};
	183	+
	184	+/**
	185	+ * ps3_sys_manager_write - Helper to write a two part message to the vuart.
	186	+ *
	187	+ */
	188	+
	189	+static int ps3_sys_manager_write(struct ps3_vuart_port_device *dev,
	190	+ const struct ps3_sys_manager_header header, const void payload)
	191	+{
	192	+ int result;
	193	+
	194	+ BUG_ON(header->version != 1);
	195	+ BUG_ON(header->size != 16);
	196	+ BUG_ON(header->payload_size != 8 && header->payload_size != 16);
	197	+ BUG_ON(header->service_id > 8);
	198	+
	199	+ result = ps3_vuart_write(dev, header,
	200	+ sizeof(struct ps3_sys_manager_header));
	201	+
	202	+ if (!result)
	203	+ result = ps3_vuart_write(dev, payload, header->payload_size);
	204	+
	205	+ return result;
	206	+}
	207	+
	208	+/**
	209	+ * ps3_sys_manager_send_attr - Send a 'set attribute' to the system manager.
	210	+ *
	211	+ */
	212	+
	213	+static int ps3_sys_manager_send_attr(struct ps3_vuart_port_device *dev,
	214	+ enum ps3_sys_manager_attr attr)
	215	+{
	216	+ static const struct ps3_sys_manager_header header = {
	217	+ .version = 1,
	218	+ .size = 16,
	219	+ .payload_size = 16,
	220	+ .service_id = PS3_SM_SERVICE_ID_SET_ATTR,
	221	+ };
	222	+ struct {
	223	+ u8 version;
	224	+ u8 reserved_1[3];
	225	+ u32 attribute;
	226	+ } payload;
	227	+
	228	+ BUILD_BUG_ON(sizeof(payload) != 8);
	229	+
	230	+ dev_dbg(&dev->core, "%s:%d: %xh\n", __func__, __LINE__, attr);
	231	+
	232	+ memset(&payload, 0, sizeof(payload));
	233	+ payload.version = 1;
	234	+ payload.attribute = attr;
	235	+
	236	+ return ps3_sys_manager_write(dev, &header, &payload);
	237	+}
	238	+
	239	+/**
	240	+ * ps3_sys_manager_send_next_op - Send a 'set next op' to the system manager.
	241	+ *
	242	+ * Tell the system manager what to do after this lpar is destroyed.
	243	+ */
	244	+
	245	+static int ps3_sys_manager_send_next_op(struct ps3_vuart_port_device *dev,
	246	+ enum ps3_sys_manager_next_op op,
	247	+ enum ps3_sys_manager_wake_source wake_source)
	248	+{
	249	+ static const struct ps3_sys_manager_header header = {
	250	+ .version = 1,
	251	+ .size = 16,
	252	+ .payload_size = 16,
	253	+ .service_id = PS3_SM_SERVICE_ID_SET_NEXT_OP,
	254	+ };
	255	+ struct {
	256	+ u8 version;
	257	+ u8 type;
	258	+ u8 gos_id;
	259	+ u8 reserved_1;
	260	+ u32 wake_source;
	261	+ u8 reserved_2[8];
	262	+ } payload;
	263	+
	264	+ BUILD_BUG_ON(sizeof(payload) != 16);
	265	+
	266	+ dev_dbg(&dev->core, "%s:%d: (%xh)\n", __func__, __LINE__, op);
	267	+
	268	+ memset(&payload, 0, sizeof(payload));
	269	+ payload.version = 3;
	270	+ payload.type = op;
	271	+ payload.gos_id = 3; /* other os */
	272	+ payload.wake_source = wake_source;
	273	+
	274	+ return ps3_sys_manager_write(dev, &header, &payload);
	275	+}
	276	+
	277	+/**
	278	+ * ps3_sys_manager_send_request_shutdown - Send 'request' to the system manager.
	279	+ *
	280	+ * The guest sends this message to request an operation or action of the system
	281	+ * manager. The reply is a command message from the system manager. In the
	282	+ * command handler the guest performs the requested operation. The result of
	283	+ * the command is then communicated back to the system manager with a response
	284	+ * message.
	285	+ *
	286	+ * Currently, the only supported request it the 'shutdown self' request.
	287	+ */
	288	+
	289	+static int ps3_sys_manager_send_request_shutdown(struct ps3_vuart_port_device *dev)
	290	+{
	291	+ static const struct ps3_sys_manager_header header = {
	292	+ .version = 1,
	293	+ .size = 16,
	294	+ .payload_size = 16,
	295	+ .service_id = PS3_SM_SERVICE_ID_REQUEST,
	296	+ };
	297	+ struct {
	298	+ u8 version;
	299	+ u8 type;
	300	+ u8 gos_id;
	301	+ u8 reserved_1[13];
	302	+ } static const payload = {
	303	+ .version = 1,
	304	+ .type = 1, /* shutdown */
	305	+ .gos_id = 0, /* self */
	306	+ };
	307	+
	308	+ BUILD_BUG_ON(sizeof(payload) != 16);
	309	+
	310	+ dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
	311	+
	312	+ return ps3_sys_manager_write(dev, &header, &payload);
	313	+}
	314	+
	315	+/**
	316	+ * ps3_sys_manager_send_response - Send a 'response' to the system manager.
	317	+ * @status: zero = success, others fail.
	318	+ *
	319	+ * The guest sends this message to the system manager to acnowledge success or
	320	+ * failure of a command sent by the system manager.
	321	+ */
	322	+
	323	+static int ps3_sys_manager_send_response(struct ps3_vuart_port_device *dev,
	324	+ u64 status)
	325	+{
	326	+ static const struct ps3_sys_manager_header header = {
	327	+ .version = 1,
	328	+ .size = 16,
	329	+ .payload_size = 16,
	330	+ .service_id = PS3_SM_SERVICE_ID_RESPONSE,
	331	+ };
	332	+ struct {
	333	+ u8 version;
	334	+ u8 reserved_1[3];
	335	+ u8 status;
	336	+ u8 reserved_2[11];
	337	+ } payload;
	338	+
	339	+ BUILD_BUG_ON(sizeof(payload) != 16);
	340	+
	341	+ dev_dbg(&dev->core, "%s:%d: (%s)\n", __func__, __LINE__,
	342	+ (status ? "nak" : "ack"));
	343	+
	344	+ memset(&payload, 0, sizeof(payload));
	345	+ payload.version = 1;
	346	+ payload.status = status;
	347	+
	348	+ return ps3_sys_manager_write(dev, &header, &payload);
	349	+}
	350	+
	351	+/**
	352	+ * ps3_sys_manager_handle_event - Second stage event msg handler.
	353	+ *
	354	+ */
	355	+
	356	+static int ps3_sys_manager_handle_event(struct ps3_vuart_port_device *dev)
	357	+{
	358	+ int result;
	359	+ struct {
	360	+ u8 version;
	361	+ u8 type;
	362	+ u8 reserved_1[2];
	363	+ u32 value;
	364	+ u8 reserved_2[8];
	365	+ } event;
	366	+
	367	+ BUILD_BUG_ON(sizeof(event) != 16);
	368	+
	369	+ result = ps3_vuart_read(dev, &event, sizeof(event));
	370	+ BUG_ON(result);
	371	+
	372	+ if (event.version != 1) {
	373	+ dev_dbg(&dev->core, "%s:%d: unsupported event version (%u)\n",
	374	+ __func__, __LINE__, event.version);
	375	+ return -EIO;
	376	+ }
	377	+
	378	+ switch (event.type) {
	379	+ case PS3_SM_EVENT_POWER_PRESSED:
	380	+ dev_dbg(&dev->core, "%s:%d: POWER_PRESSED\n",
	381	+ __func__, __LINE__);
	382	+ break;
	383	+ case PS3_SM_EVENT_POWER_RELEASED:
	384	+ dev_dbg(&dev->core, "%s:%d: POWER_RELEASED (%u ms)\n",
	385	+ __func__, __LINE__, event.value);
	386	+ kill_cad_pid(SIGINT, 1);
	387	+ break;
	388	+ case PS3_SM_EVENT_THERMAL_ALERT:
	389	+ dev_dbg(&dev->core, "%s:%d: THERMAL_ALERT (zone %u)\n",
	390	+ __func__, __LINE__, event.value);
	391	+ printk(KERN_INFO "PS3 Thermal Alert Zone %u\n", event.value);
	392	+ break;
	393	+ case PS3_SM_EVENT_THERMAL_CLEARED:
	394	+ dev_dbg(&dev->core, "%s:%d: THERMAL_CLEARED (zone %u)\n",
	395	+ __func__, __LINE__, event.value);
	396	+ break;
	397	+ default:
	398	+ dev_dbg(&dev->core, "%s:%d: unknown event (%u)\n",
	399	+ __func__, __LINE__, event.type);
	400	+ return -EIO;
	401	+ }
	402	+
	403	+ return 0;
	404	+}
	405	+/**
	406	+ * ps3_sys_manager_handle_cmd - Second stage command msg handler.
	407	+ *
	408	+ * The system manager sends this in reply to a 'request' message from the guest.
	409	+ */
	410	+
	411	+static int ps3_sys_manager_handle_cmd(struct ps3_vuart_port_device *dev)
	412	+{
	413	+ int result;
	414	+ struct {
	415	+ u8 version;
	416	+ u8 type;
	417	+ u8 reserved_1[14];
	418	+ } cmd;
	419	+
	420	+ BUILD_BUG_ON(sizeof(cmd) != 16);
	421	+
	422	+ dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
	423	+
	424	+ result = ps3_vuart_read(dev, &cmd, sizeof(cmd));
	425	+
	426	+ if(result)
	427	+ return result;
	428	+
	429	+ if (cmd.version != 1) {
	430	+ dev_dbg(&dev->core, "%s:%d: unsupported cmd version (%u)\n",
	431	+ __func__, __LINE__, cmd.version);
	432	+ return -EIO;
	433	+ }
	434	+
	435	+ if (cmd.type != PS3_SM_CMD_SHUTDOWN) {
	436	+ dev_dbg(&dev->core, "%s:%d: unknown cmd (%u)\n",
	437	+ __func__, __LINE__, cmd.type);
	438	+ return -EIO;
	439	+ }
	440	+
	441	+ ps3_sys_manager_send_response(dev, 0);
	442	+ return 0;
	443	+}
	444	+
	445	+/**
	446	+ * ps3_sys_manager_handle_msg - First stage msg handler.
	447	+ *
	448	+ */
	449	+
	450	+static int ps3_sys_manager_handle_msg(struct ps3_vuart_port_device *dev)
	451	+{
	452	+ int result;
	453	+ struct ps3_sys_manager_header header;
	454	+
	455	+ result = ps3_vuart_read(dev, &header,
	456	+ sizeof(struct ps3_sys_manager_header));
	457	+
	458	+ if(result)
	459	+ return result;
	460	+
	461	+ if (header.version != 1) {
	462	+ dev_dbg(&dev->core, "%s:%d: unsupported header version (%u)\n",
	463	+ __func__, __LINE__, header.version);
	464	+ goto fail_header;
	465	+ }
	466	+
	467	+ BUILD_BUG_ON(sizeof(header) != 16);
	468	+ BUG_ON(header.size != 16);
	469	+ BUG_ON(header.payload_size != 16);
	470	+
	471	+ switch (header.service_id) {
	472	+ case PS3_SM_SERVICE_ID_EXTERN_EVENT:
	473	+ dev_dbg(&dev->core, "%s:%d: EVENT\n", __func__, __LINE__);
	474	+ return ps3_sys_manager_handle_event(dev);
	475	+ case PS3_SM_SERVICE_ID_COMMAND:
	476	+ dev_dbg(&dev->core, "%s:%d: COMMAND\n", __func__, __LINE__);
	477	+ return ps3_sys_manager_handle_cmd(dev);
	478	+ default:
	479	+ dev_dbg(&dev->core, "%s:%d: unknown service_id (%u)\n",
	480	+ __func__, __LINE__, header.service_id);
	481	+ break;
	482	+ }
	483	+ goto fail_id;
	484	+
	485	+fail_header:
	486	+ ps3_vuart_clear_rx_bytes(dev, 0);
	487	+ return -EIO;
	488	+fail_id:
	489	+ ps3_vuart_clear_rx_bytes(dev, header.payload_size);
	490	+ return -EIO;
	491	+}
	492	+
	493	+/**
	494	+ * ps3_sys_manager_work - Asyncronous read handler.
	495	+ *
	496	+ * Signaled when a complete message arrives at the vuart port.
	497	+ */
	498	+
	499	+static void ps3_sys_manager_work(struct work_struct *work)
	500	+{
	501	+ struct ps3_vuart_port_device *dev = ps3_vuart_work_to_port_device(work);
	502	+
	503	+ ps3_sys_manager_handle_msg(dev);
	504	+ ps3_vuart_read_async(dev, ps3_sys_manager_work, PS3_SM_RX_MSG_LEN);
	505	+}
	506	+
	507	+struct {
	508	+ struct ps3_vuart_port_device *dev;
	509	+} static drv_priv;
	510	+
	511	+/**
	512	+ * ps3_sys_manager_restart - The final platform machine_restart routine.
	513	+ *
	514	+ * This routine never returns. The routine disables asyncronous vuart reads
	515	+ * then spins calling ps3_sys_manager_handle_msg() to receive and acknowledge
	516	+ * the shutdown command sent from the system manager. Soon after the
	517	+ * acknowledgement is sent the lpar is destroyed by the HV. This routine
	518	+ * should only be called from ps3_restart().
	519	+ */
	520	+
	521	+void ps3_sys_manager_restart(void)
	522	+{
	523	+ struct ps3_vuart_port_device *dev = drv_priv.dev;
	524	+
	525	+ BUG_ON(!drv_priv.dev);
	526	+
	527	+ dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
	528	+
	529	+ ps3_vuart_cancel_async(dev);
	530	+
	531	+ ps3_sys_manager_send_attr(dev, 0);
	532	+ ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_LPAR_REBOOT,
	533	+ PS3_SM_WAKE_DEFAULT);
	534	+ ps3_sys_manager_send_request_shutdown(dev);
	535	+
	536	+ printk(KERN_EMERG "System Halted, OK to turn off power\n");
	537	+
	538	+ while(1)
	539	+ ps3_sys_manager_handle_msg(dev);
	540	+}
	541	+
	542	+/**
	543	+ * ps3_sys_manager_power_off - The final platform machine_power_off routine.
	544	+ *
	545	+ * This routine never returns. The routine disables asyncronous vuart reads
	546	+ * then spins calling ps3_sys_manager_handle_msg() to receive and acknowledge
	547	+ * the shutdown command sent from the system manager. Soon after the
	548	+ * acknowledgement is sent the lpar is destroyed by the HV. This routine
	549	+ * should only be called from ps3_power_off().
	550	+ */
	551	+
	552	+void ps3_sys_manager_power_off(void)
	553	+{
	554	+ struct ps3_vuart_port_device *dev = drv_priv.dev;
	555	+
	556	+ BUG_ON(!drv_priv.dev);
	557	+
	558	+ dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
	559	+
	560	+ ps3_vuart_cancel_async(dev);
	561	+
	562	+ ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_SYS_SHUTDOWN,
	563	+ PS3_SM_WAKE_DEFAULT);
	564	+ ps3_sys_manager_send_request_shutdown(dev);
	565	+
	566	+ printk(KERN_EMERG "System Halted, OK to turn off power\n");
	567	+
	568	+ while(1)
	569	+ ps3_sys_manager_handle_msg(dev);
	570	+}
	571	+
	572	+static int ps3_sys_manager_probe(struct ps3_vuart_port_device *dev)
	573	+{
	574	+ int result;
	575	+
	576	+ dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
	577	+
	578	+ BUG_ON(drv_priv.dev);
	579	+ drv_priv.dev = dev;
	580	+
	581	+ result = ps3_sys_manager_send_attr(dev, PS3_SM_ATTR_ALL);
	582	+ BUG_ON(result);
	583	+
	584	+ result = ps3_vuart_read_async(dev, ps3_sys_manager_work,
	585	+ PS3_SM_RX_MSG_LEN);
	586	+ BUG_ON(result);
	587	+
	588	+ return result;
	589	+}
	590	+
	591	+static struct ps3_vuart_port_driver ps3_sys_manager = {
	592	+ .match_id = PS3_MATCH_ID_SYSTEM_MANAGER,
	593	+ .core = {
	594	+ .name = "ps3_sys_manager",
	595	+ },
	596	+ .probe = ps3_sys_manager_probe,
	597	+};
	598	+
	599	+static int __init ps3_sys_manager_init(void)
	600	+{
	601	+ return ps3_vuart_port_driver_register(&ps3_sys_manager);
	602	+}
	603	+
	604	+module_init(ps3_sys_manager_init);
...	...	@@ -370,6 +370,11 @@
370	370
371	371	int ps3_vuart_port_device_register(struct ps3_vuart_port_device *dev);
372	372
	373	+/* system manager */
	374	+
	375	+void ps3_sys_manager_restart(void);
	376	+void ps3_sys_manager_power_off(void);
	377	+
373	378	struct ps3_prealloc {
374	379	const char *name;
375	380	void *address;