Root/drivers/ps3/ps3-sys-manager.c

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

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