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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 <linux/sched/signal.h>
26
27#include <asm/firmware.h>
28#include <asm/lv1call.h>
29#include <asm/ps3.h>
30
31#include "vuart.h"
32
33/**
34 * ps3_sys_manager - PS3 system manager driver.
35 *
36 * The system manager provides an asynchronous system event notification
37 * mechanism for reporting events like thermal alert and button presses to
38 * guests. It also provides support to control system shutdown and startup.
39 *
40 * The actual system manager is implemented as an application running in the
41 * system policy module in lpar_1. Guests communicate with the system manager
42 * through port 2 of the vuart using a simple packet message protocol.
43 * Messages are comprised of a fixed field header followed by a message
44 * specific payload.
45 */
46
47/**
48 * struct ps3_sys_manager_header - System manager message header.
49 * @version: Header version, currently 1.
50 * @size: Header size in bytes, currently 16.
51 * @payload_size: Message payload size in bytes.
52 * @service_id: Message type, one of enum ps3_sys_manager_service_id.
53 * @request_tag: Unique number to identify reply.
54 */
55
56struct ps3_sys_manager_header {
57 /* version 1 */
58 u8 version;
59 u8 size;
60 u16 reserved_1;
61 u32 payload_size;
62 u16 service_id;
63 u16 reserved_2;
64 u32 request_tag;
65};
66
67#define dump_sm_header(_h) _dump_sm_header(_h, __func__, __LINE__)
68static void __maybe_unused _dump_sm_header(
69 const struct ps3_sys_manager_header *h, const char *func, int line)
70{
71 pr_debug("%s:%d: version: %xh\n", func, line, h->version);
72 pr_debug("%s:%d: size: %xh\n", func, line, h->size);
73 pr_debug("%s:%d: payload_size: %xh\n", func, line, h->payload_size);
74 pr_debug("%s:%d: service_id: %xh\n", func, line, h->service_id);
75 pr_debug("%s:%d: request_tag: %xh\n", func, line, h->request_tag);
76}
77
78/**
79 * @PS3_SM_RX_MSG_LEN_MIN - Shortest received message length.
80 * @PS3_SM_RX_MSG_LEN_MAX - Longest received message length.
81 *
82 * Currently all messages received from the system manager are either
83 * (16 bytes header + 8 bytes payload = 24 bytes) or (16 bytes header
84 * + 16 bytes payload = 32 bytes). This knowledge is used to simplify
85 * the logic.
86 */
87
88enum {
89 PS3_SM_RX_MSG_LEN_MIN = 24,
90 PS3_SM_RX_MSG_LEN_MAX = 32,
91};
92
93/**
94 * enum ps3_sys_manager_service_id - Message header service_id.
95 * @PS3_SM_SERVICE_ID_REQUEST: guest --> sys_manager.
96 * @PS3_SM_SERVICE_ID_REQUEST_ERROR: guest <-- sys_manager.
97 * @PS3_SM_SERVICE_ID_COMMAND: guest <-- sys_manager.
98 * @PS3_SM_SERVICE_ID_RESPONSE: guest --> sys_manager.
99 * @PS3_SM_SERVICE_ID_SET_ATTR: guest --> sys_manager.
100 * @PS3_SM_SERVICE_ID_EXTERN_EVENT: guest <-- sys_manager.
101 * @PS3_SM_SERVICE_ID_SET_NEXT_OP: guest --> sys_manager.
102 *
103 * PS3_SM_SERVICE_ID_REQUEST_ERROR is returned for invalid data values in a
104 * a PS3_SM_SERVICE_ID_REQUEST message. It also seems to be returned when
105 * a REQUEST message is sent at the wrong time.
106 */
107
108enum ps3_sys_manager_service_id {
109 /* version 1 */
110 PS3_SM_SERVICE_ID_REQUEST = 1,
111 PS3_SM_SERVICE_ID_RESPONSE = 2,
112 PS3_SM_SERVICE_ID_COMMAND = 3,
113 PS3_SM_SERVICE_ID_EXTERN_EVENT = 4,
114 PS3_SM_SERVICE_ID_SET_NEXT_OP = 5,
115 PS3_SM_SERVICE_ID_REQUEST_ERROR = 6,
116 PS3_SM_SERVICE_ID_SET_ATTR = 8,
117};
118
119/**
120 * enum ps3_sys_manager_attr - Notification attribute (bit position mask).
121 * @PS3_SM_ATTR_POWER: Power button.
122 * @PS3_SM_ATTR_RESET: Reset button, not available on retail console.
123 * @PS3_SM_ATTR_THERMAL: System thermal alert.
124 * @PS3_SM_ATTR_CONTROLLER: Remote controller event.
125 * @PS3_SM_ATTR_ALL: Logical OR of all.
126 *
127 * The guest tells the system manager which events it is interested in receiving
128 * notice of by sending the system manager a logical OR of notification
129 * attributes via the ps3_sys_manager_send_attr() routine.
130 */
131
132enum ps3_sys_manager_attr {
133 /* version 1 */
134 PS3_SM_ATTR_POWER = 1,
135 PS3_SM_ATTR_RESET = 2,
136 PS3_SM_ATTR_THERMAL = 4,
137 PS3_SM_ATTR_CONTROLLER = 8, /* bogus? */
138 PS3_SM_ATTR_ALL = 0x0f,
139};
140
141/**
142 * enum ps3_sys_manager_event - External event type, reported by system manager.
143 * @PS3_SM_EVENT_POWER_PRESSED: payload.value =
144 * enum ps3_sys_manager_button_event.
145 * @PS3_SM_EVENT_POWER_RELEASED: payload.value = time pressed in millisec.
146 * @PS3_SM_EVENT_RESET_PRESSED: payload.value =
147 * enum ps3_sys_manager_button_event.
148 * @PS3_SM_EVENT_RESET_RELEASED: payload.value = time pressed in millisec.
149 * @PS3_SM_EVENT_THERMAL_ALERT: payload.value = thermal zone id.
150 * @PS3_SM_EVENT_THERMAL_CLEARED: payload.value = thermal zone id.
151 */
152
153enum ps3_sys_manager_event {
154 /* version 1 */
155 PS3_SM_EVENT_POWER_PRESSED = 3,
156 PS3_SM_EVENT_POWER_RELEASED = 4,
157 PS3_SM_EVENT_RESET_PRESSED = 5,
158 PS3_SM_EVENT_RESET_RELEASED = 6,
159 PS3_SM_EVENT_THERMAL_ALERT = 7,
160 PS3_SM_EVENT_THERMAL_CLEARED = 8,
161 /* no info on controller events */
162};
163
164/**
165 * enum ps3_sys_manager_button_event - Button event payload values.
166 * @PS3_SM_BUTTON_EVENT_HARD: Hardware generated event.
167 * @PS3_SM_BUTTON_EVENT_SOFT: Software generated event.
168 */
169
170enum ps3_sys_manager_button_event {
171 PS3_SM_BUTTON_EVENT_HARD = 0,
172 PS3_SM_BUTTON_EVENT_SOFT = 1,
173};
174
175/**
176 * enum ps3_sys_manager_next_op - Operation to perform after lpar is destroyed.
177 */
178
179enum ps3_sys_manager_next_op {
180 /* version 3 */
181 PS3_SM_NEXT_OP_SYS_SHUTDOWN = 1,
182 PS3_SM_NEXT_OP_SYS_REBOOT = 2,
183 PS3_SM_NEXT_OP_LPAR_REBOOT = 0x82,
184};
185
186/**
187 * enum ps3_sys_manager_wake_source - Next-op wakeup source (bit position mask).
188 * @PS3_SM_WAKE_DEFAULT: Disk insert, power button, eject button.
189 * @PS3_SM_WAKE_W_O_L: Ether or wireless LAN.
190 * @PS3_SM_WAKE_P_O_R: Power on reset.
191 *
192 * Additional wakeup sources when specifying PS3_SM_NEXT_OP_SYS_SHUTDOWN.
193 * The system will always wake from the PS3_SM_WAKE_DEFAULT sources.
194 * Sources listed here are the only ones available to guests in the
195 * other-os lpar.
196 */
197
198enum ps3_sys_manager_wake_source {
199 /* version 3 */
200 PS3_SM_WAKE_DEFAULT = 0,
201 PS3_SM_WAKE_W_O_L = 0x00000400,
202 PS3_SM_WAKE_P_O_R = 0x80000000,
203};
204
205/**
206 * user_wake_sources - User specified wakeup sources.
207 *
208 * Logical OR of enum ps3_sys_manager_wake_source types.
209 */
210
211static u32 user_wake_sources = PS3_SM_WAKE_DEFAULT;
212
213/**
214 * enum ps3_sys_manager_cmd - Command from system manager to guest.
215 *
216 * The guest completes the actions needed, then acks or naks the command via
217 * ps3_sys_manager_send_response(). In the case of @PS3_SM_CMD_SHUTDOWN,
218 * the guest must be fully prepared for a system poweroff prior to acking the
219 * command.
220 */
221
222enum ps3_sys_manager_cmd {
223 /* version 1 */
224 PS3_SM_CMD_SHUTDOWN = 1, /* shutdown guest OS */
225};
226
227/**
228 * ps3_sm_force_power_off - Poweroff helper.
229 *
230 * A global variable used to force a poweroff when the power button has
231 * been pressed irrespective of how init handles the ctrl_alt_del signal.
232 *
233 */
234
235static unsigned int ps3_sm_force_power_off;
236
237/**
238 * ps3_sys_manager_write - Helper to write a two part message to the vuart.
239 *
240 */
241
242static int ps3_sys_manager_write(struct ps3_system_bus_device *dev,
243 const struct ps3_sys_manager_header *header, const void *payload)
244{
245 int result;
246
247 BUG_ON(header->version != 1);
248 BUG_ON(header->size != 16);
249 BUG_ON(header->payload_size != 8 && header->payload_size != 16);
250 BUG_ON(header->service_id > 8);
251
252 result = ps3_vuart_write(dev, header,
253 sizeof(struct ps3_sys_manager_header));
254
255 if (!result)
256 result = ps3_vuart_write(dev, payload, header->payload_size);
257
258 return result;
259}
260
261/**
262 * ps3_sys_manager_send_attr - Send a 'set attribute' to the system manager.
263 *
264 */
265
266static int ps3_sys_manager_send_attr(struct ps3_system_bus_device *dev,
267 enum ps3_sys_manager_attr attr)
268{
269 struct ps3_sys_manager_header header;
270 struct {
271 u8 version;
272 u8 reserved_1[3];
273 u32 attribute;
274 } payload;
275
276 BUILD_BUG_ON(sizeof(payload) != 8);
277
278 dev_dbg(&dev->core, "%s:%d: %xh\n", __func__, __LINE__, attr);
279
280 memset(&header, 0, sizeof(header));
281 header.version = 1;
282 header.size = 16;
283 header.payload_size = 16;
284 header.service_id = PS3_SM_SERVICE_ID_SET_ATTR;
285
286 memset(&payload, 0, sizeof(payload));
287 payload.version = 1;
288 payload.attribute = attr;
289
290 return ps3_sys_manager_write(dev, &header, &payload);
291}
292
293/**
294 * ps3_sys_manager_send_next_op - Send a 'set next op' to the system manager.
295 *
296 * Tell the system manager what to do after this lpar is destroyed.
297 */
298
299static int ps3_sys_manager_send_next_op(struct ps3_system_bus_device *dev,
300 enum ps3_sys_manager_next_op op,
301 enum ps3_sys_manager_wake_source wake_source)
302{
303 struct ps3_sys_manager_header header;
304 struct {
305 u8 version;
306 u8 type;
307 u8 gos_id;
308 u8 reserved_1;
309 u32 wake_source;
310 u8 reserved_2[8];
311 } payload;
312
313 BUILD_BUG_ON(sizeof(payload) != 16);
314
315 dev_dbg(&dev->core, "%s:%d: (%xh)\n", __func__, __LINE__, op);
316
317 memset(&header, 0, sizeof(header));
318 header.version = 1;
319 header.size = 16;
320 header.payload_size = 16;
321 header.service_id = PS3_SM_SERVICE_ID_SET_NEXT_OP;
322
323 memset(&payload, 0, sizeof(payload));
324 payload.version = 3;
325 payload.type = op;
326 payload.gos_id = 3; /* other os */
327 payload.wake_source = wake_source;
328
329 return ps3_sys_manager_write(dev, &header, &payload);
330}
331
332/**
333 * ps3_sys_manager_send_request_shutdown - Send 'request' to the system manager.
334 *
335 * The guest sends this message to request an operation or action of the system
336 * manager. The reply is a command message from the system manager. In the
337 * command handler the guest performs the requested operation. The result of
338 * the command is then communicated back to the system manager with a response
339 * message.
340 *
341 * Currently, the only supported request is the 'shutdown self' request.
342 */
343
344static int ps3_sys_manager_send_request_shutdown(
345 struct ps3_system_bus_device *dev)
346{
347 struct ps3_sys_manager_header header;
348 struct {
349 u8 version;
350 u8 type;
351 u8 gos_id;
352 u8 reserved_1[13];
353 } payload;
354
355 BUILD_BUG_ON(sizeof(payload) != 16);
356
357 dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
358
359 memset(&header, 0, sizeof(header));
360 header.version = 1;
361 header.size = 16;
362 header.payload_size = 16;
363 header.service_id = PS3_SM_SERVICE_ID_REQUEST;
364
365 memset(&payload, 0, sizeof(payload));
366 payload.version = 1;
367 payload.type = 1; /* shutdown */
368 payload.gos_id = 0; /* self */
369
370 return ps3_sys_manager_write(dev, &header, &payload);
371}
372
373/**
374 * ps3_sys_manager_send_response - Send a 'response' to the system manager.
375 * @status: zero = success, others fail.
376 *
377 * The guest sends this message to the system manager to acnowledge success or
378 * failure of a command sent by the system manager.
379 */
380
381static int ps3_sys_manager_send_response(struct ps3_system_bus_device *dev,
382 u64 status)
383{
384 struct ps3_sys_manager_header header;
385 struct {
386 u8 version;
387 u8 reserved_1[3];
388 u8 status;
389 u8 reserved_2[11];
390 } payload;
391
392 BUILD_BUG_ON(sizeof(payload) != 16);
393
394 dev_dbg(&dev->core, "%s:%d: (%s)\n", __func__, __LINE__,
395 (status ? "nak" : "ack"));
396
397 memset(&header, 0, sizeof(header));
398 header.version = 1;
399 header.size = 16;
400 header.payload_size = 16;
401 header.service_id = PS3_SM_SERVICE_ID_RESPONSE;
402
403 memset(&payload, 0, sizeof(payload));
404 payload.version = 1;
405 payload.status = status;
406
407 return ps3_sys_manager_write(dev, &header, &payload);
408}
409
410/**
411 * ps3_sys_manager_handle_event - Second stage event msg handler.
412 *
413 */
414
415static int ps3_sys_manager_handle_event(struct ps3_system_bus_device *dev)
416{
417 int result;
418 struct {
419 u8 version;
420 u8 type;
421 u8 reserved_1[2];
422 u32 value;
423 u8 reserved_2[8];
424 } event;
425
426 BUILD_BUG_ON(sizeof(event) != 16);
427
428 result = ps3_vuart_read(dev, &event, sizeof(event));
429 BUG_ON(result && "need to retry here");
430
431 if (event.version != 1) {
432 dev_dbg(&dev->core, "%s:%d: unsupported event version (%u)\n",
433 __func__, __LINE__, event.version);
434 return -EIO;
435 }
436
437 switch (event.type) {
438 case PS3_SM_EVENT_POWER_PRESSED:
439 dev_dbg(&dev->core, "%s:%d: POWER_PRESSED (%s)\n",
440 __func__, __LINE__,
441 (event.value == PS3_SM_BUTTON_EVENT_SOFT ? "soft"
442 : "hard"));
443 ps3_sm_force_power_off = 1;
444 /*
445 * A memory barrier is use here to sync memory since
446 * ps3_sys_manager_final_restart() could be called on
447 * another cpu.
448 */
449 wmb();
450 kill_cad_pid(SIGINT, 1); /* ctrl_alt_del */
451 break;
452 case PS3_SM_EVENT_POWER_RELEASED:
453 dev_dbg(&dev->core, "%s:%d: POWER_RELEASED (%u ms)\n",
454 __func__, __LINE__, event.value);
455 break;
456 case PS3_SM_EVENT_RESET_PRESSED:
457 dev_dbg(&dev->core, "%s:%d: RESET_PRESSED (%s)\n",
458 __func__, __LINE__,
459 (event.value == PS3_SM_BUTTON_EVENT_SOFT ? "soft"
460 : "hard"));
461 ps3_sm_force_power_off = 0;
462 /*
463 * A memory barrier is use here to sync memory since
464 * ps3_sys_manager_final_restart() could be called on
465 * another cpu.
466 */
467 wmb();
468 kill_cad_pid(SIGINT, 1); /* ctrl_alt_del */
469 break;
470 case PS3_SM_EVENT_RESET_RELEASED:
471 dev_dbg(&dev->core, "%s:%d: RESET_RELEASED (%u ms)\n",
472 __func__, __LINE__, event.value);
473 break;
474 case PS3_SM_EVENT_THERMAL_ALERT:
475 dev_dbg(&dev->core, "%s:%d: THERMAL_ALERT (zone %u)\n",
476 __func__, __LINE__, event.value);
477 pr_info("PS3 Thermal Alert Zone %u\n", event.value);
478 break;
479 case PS3_SM_EVENT_THERMAL_CLEARED:
480 dev_dbg(&dev->core, "%s:%d: THERMAL_CLEARED (zone %u)\n",
481 __func__, __LINE__, event.value);
482 break;
483 default:
484 dev_dbg(&dev->core, "%s:%d: unknown event (%u)\n",
485 __func__, __LINE__, event.type);
486 return -EIO;
487 }
488
489 return 0;
490}
491/**
492 * ps3_sys_manager_handle_cmd - Second stage command msg handler.
493 *
494 * The system manager sends this in reply to a 'request' message from the guest.
495 */
496
497static int ps3_sys_manager_handle_cmd(struct ps3_system_bus_device *dev)
498{
499 int result;
500 struct {
501 u8 version;
502 u8 type;
503 u8 reserved_1[14];
504 } cmd;
505
506 BUILD_BUG_ON(sizeof(cmd) != 16);
507
508 dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
509
510 result = ps3_vuart_read(dev, &cmd, sizeof(cmd));
511 BUG_ON(result && "need to retry here");
512
513 if (result)
514 return result;
515
516 if (cmd.version != 1) {
517 dev_dbg(&dev->core, "%s:%d: unsupported cmd version (%u)\n",
518 __func__, __LINE__, cmd.version);
519 return -EIO;
520 }
521
522 if (cmd.type != PS3_SM_CMD_SHUTDOWN) {
523 dev_dbg(&dev->core, "%s:%d: unknown cmd (%u)\n",
524 __func__, __LINE__, cmd.type);
525 return -EIO;
526 }
527
528 ps3_sys_manager_send_response(dev, 0);
529 return 0;
530}
531
532/**
533 * ps3_sys_manager_handle_msg - First stage msg handler.
534 *
535 * Can be called directly to manually poll vuart and pump message handler.
536 */
537
538static int ps3_sys_manager_handle_msg(struct ps3_system_bus_device *dev)
539{
540 int result;
541 struct ps3_sys_manager_header header;
542
543 result = ps3_vuart_read(dev, &header,
544 sizeof(struct ps3_sys_manager_header));
545
546 if (result)
547 return result;
548
549 if (header.version != 1) {
550 dev_dbg(&dev->core, "%s:%d: unsupported header version (%u)\n",
551 __func__, __LINE__, header.version);
552 dump_sm_header(&header);
553 goto fail_header;
554 }
555
556 BUILD_BUG_ON(sizeof(header) != 16);
557
558 if (header.size != 16 || (header.payload_size != 8
559 && header.payload_size != 16)) {
560 dump_sm_header(&header);
561 BUG();
562 }
563
564 switch (header.service_id) {
565 case PS3_SM_SERVICE_ID_EXTERN_EVENT:
566 dev_dbg(&dev->core, "%s:%d: EVENT\n", __func__, __LINE__);
567 return ps3_sys_manager_handle_event(dev);
568 case PS3_SM_SERVICE_ID_COMMAND:
569 dev_dbg(&dev->core, "%s:%d: COMMAND\n", __func__, __LINE__);
570 return ps3_sys_manager_handle_cmd(dev);
571 case PS3_SM_SERVICE_ID_REQUEST_ERROR:
572 dev_dbg(&dev->core, "%s:%d: REQUEST_ERROR\n", __func__,
573 __LINE__);
574 dump_sm_header(&header);
575 break;
576 default:
577 dev_dbg(&dev->core, "%s:%d: unknown service_id (%u)\n",
578 __func__, __LINE__, header.service_id);
579 break;
580 }
581 goto fail_id;
582
583fail_header:
584 ps3_vuart_clear_rx_bytes(dev, 0);
585 return -EIO;
586fail_id:
587 ps3_vuart_clear_rx_bytes(dev, header.payload_size);
588 return -EIO;
589}
590
591static void ps3_sys_manager_fin(struct ps3_system_bus_device *dev)
592{
593 ps3_sys_manager_send_request_shutdown(dev);
594
595 pr_emerg("System Halted, OK to turn off power\n");
596
597 while (ps3_sys_manager_handle_msg(dev)) {
598 /* pause until next DEC interrupt */
599 lv1_pause(0);
600 }
601
602 while (1) {
603 /* pause, ignoring DEC interrupt */
604 lv1_pause(1);
605 }
606}
607
608/**
609 * ps3_sys_manager_final_power_off - The final platform machine_power_off routine.
610 *
611 * This routine never returns. The routine disables asynchronous vuart reads
612 * then spins calling ps3_sys_manager_handle_msg() to receive and acknowledge
613 * the shutdown command sent from the system manager. Soon after the
614 * acknowledgement is sent the lpar is destroyed by the HV. This routine
615 * should only be called from ps3_power_off() through
616 * ps3_sys_manager_ops.power_off.
617 */
618
619static void ps3_sys_manager_final_power_off(struct ps3_system_bus_device *dev)
620{
621 BUG_ON(!dev);
622
623 dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
624
625 ps3_vuart_cancel_async(dev);
626
627 ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_SYS_SHUTDOWN,
628 user_wake_sources);
629
630 ps3_sys_manager_fin(dev);
631}
632
633/**
634 * ps3_sys_manager_final_restart - The final platform machine_restart routine.
635 *
636 * This routine never returns. The routine disables asynchronous vuart reads
637 * then spins calling ps3_sys_manager_handle_msg() to receive and acknowledge
638 * the shutdown command sent from the system manager. Soon after the
639 * acknowledgement is sent the lpar is destroyed by the HV. This routine
640 * should only be called from ps3_restart() through ps3_sys_manager_ops.restart.
641 */
642
643static void ps3_sys_manager_final_restart(struct ps3_system_bus_device *dev)
644{
645 BUG_ON(!dev);
646
647 dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
648
649 /* Check if we got here via a power button event. */
650
651 if (ps3_sm_force_power_off) {
652 dev_dbg(&dev->core, "%s:%d: forcing poweroff\n",
653 __func__, __LINE__);
654 ps3_sys_manager_final_power_off(dev);
655 }
656
657 ps3_vuart_cancel_async(dev);
658
659 ps3_sys_manager_send_attr(dev, 0);
660 ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_SYS_REBOOT,
661 user_wake_sources);
662
663 ps3_sys_manager_fin(dev);
664}
665
666/**
667 * ps3_sys_manager_get_wol - Get wake-on-lan setting.
668 */
669
670int ps3_sys_manager_get_wol(void)
671{
672 pr_debug("%s:%d\n", __func__, __LINE__);
673
674 return (user_wake_sources & PS3_SM_WAKE_W_O_L) != 0;
675}
676EXPORT_SYMBOL_GPL(ps3_sys_manager_get_wol);
677
678/**
679 * ps3_sys_manager_set_wol - Set wake-on-lan setting.
680 */
681
682void ps3_sys_manager_set_wol(int state)
683{
684 static DEFINE_MUTEX(mutex);
685
686 mutex_lock(&mutex);
687
688 pr_debug("%s:%d: %d\n", __func__, __LINE__, state);
689
690 if (state)
691 user_wake_sources |= PS3_SM_WAKE_W_O_L;
692 else
693 user_wake_sources &= ~PS3_SM_WAKE_W_O_L;
694 mutex_unlock(&mutex);
695}
696EXPORT_SYMBOL_GPL(ps3_sys_manager_set_wol);
697
698/**
699 * ps3_sys_manager_work - Asynchronous read handler.
700 *
701 * Signaled when PS3_SM_RX_MSG_LEN_MIN bytes arrive at the vuart port.
702 */
703
704static void ps3_sys_manager_work(struct ps3_system_bus_device *dev)
705{
706 ps3_sys_manager_handle_msg(dev);
707 ps3_vuart_read_async(dev, PS3_SM_RX_MSG_LEN_MIN);
708}
709
710static int ps3_sys_manager_probe(struct ps3_system_bus_device *dev)
711{
712 int result;
713 struct ps3_sys_manager_ops ops;
714
715 dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
716
717 ops.power_off = ps3_sys_manager_final_power_off;
718 ops.restart = ps3_sys_manager_final_restart;
719 ops.dev = dev;
720
721 /* ps3_sys_manager_register_ops copies ops. */
722
723 ps3_sys_manager_register_ops(&ops);
724
725 result = ps3_sys_manager_send_attr(dev, PS3_SM_ATTR_ALL);
726 BUG_ON(result);
727
728 result = ps3_vuart_read_async(dev, PS3_SM_RX_MSG_LEN_MIN);
729 BUG_ON(result);
730
731 return result;
732}
733
734static int ps3_sys_manager_remove(struct ps3_system_bus_device *dev)
735{
736 dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
737 return 0;
738}
739
740static void ps3_sys_manager_shutdown(struct ps3_system_bus_device *dev)
741{
742 dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__);
743}
744
745static struct ps3_vuart_port_driver ps3_sys_manager = {
746 .core.match_id = PS3_MATCH_ID_SYSTEM_MANAGER,
747 .core.core.name = "ps3_sys_manager",
748 .probe = ps3_sys_manager_probe,
749 .remove = ps3_sys_manager_remove,
750 .shutdown = ps3_sys_manager_shutdown,
751 .work = ps3_sys_manager_work,
752};
753
754static int __init ps3_sys_manager_init(void)
755{
756 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
757 return -ENODEV;
758
759 return ps3_vuart_port_driver_register(&ps3_sys_manager);
760}
761
762module_init(ps3_sys_manager_init);
763/* Module remove not supported. */
764
765MODULE_AUTHOR("Sony Corporation");
766MODULE_LICENSE("GPL v2");
767MODULE_DESCRIPTION("PS3 System Manager");
768MODULE_ALIAS(PS3_MODULE_ALIAS_SYSTEM_MANAGER);
769

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