Commit | Line | Data |
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fde5efd0 GL |
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> | |
3f07c014 | 25 | #include <linux/sched/signal.h> |
ef596c69 GU |
26 | |
27 | #include <asm/firmware.h> | |
ca052f79 | 28 | #include <asm/lv1call.h> |
fde5efd0 | 29 | #include <asm/ps3.h> |
ef596c69 | 30 | |
fde5efd0 GL |
31 | #include "vuart.h" |
32 | ||
fde5efd0 GL |
33 | /** |
34 | * ps3_sys_manager - PS3 system manager driver. | |
35 | * | |
66c63b84 | 36 | * The system manager provides an asynchronous system event notification |
fde5efd0 GL |
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. | |
af901ca1 | 50 | * @size: Header size in bytes, currently 16. |
fde5efd0 GL |
51 | * @payload_size: Message payload size in bytes. |
52 | * @service_id: Message type, one of enum ps3_sys_manager_service_id. | |
66c63b84 | 53 | * @request_tag: Unique number to identify reply. |
fde5efd0 GL |
54 | */ |
55 | ||
56 | struct 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; | |
66c63b84 GL |
63 | u16 reserved_2; |
64 | u32 request_tag; | |
fde5efd0 GL |
65 | }; |
66 | ||
66c63b84 GL |
67 | #define dump_sm_header(_h) _dump_sm_header(_h, __func__, __LINE__) |
68 | static 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 | ||
fde5efd0 | 78 | /** |
66c63b84 GL |
79 | * @PS3_SM_RX_MSG_LEN_MIN - Shortest received message length. |
80 | * @PS3_SM_RX_MSG_LEN_MAX - Longest received message length. | |
fde5efd0 | 81 | * |
66c63b84 GL |
82 | * Currently all messages received from the system manager are either |
83 | * (16 bytes header + 8 bytes payload = 24 bytes) or (16 bytes header | |
25985edc | 84 | * + 16 bytes payload = 32 bytes). This knowledge is used to simplify |
66c63b84 | 85 | * the logic. |
fde5efd0 GL |
86 | */ |
87 | ||
88 | enum { | |
66c63b84 GL |
89 | PS3_SM_RX_MSG_LEN_MIN = 24, |
90 | PS3_SM_RX_MSG_LEN_MAX = 32, | |
fde5efd0 GL |
91 | }; |
92 | ||
93 | /** | |
94 | * enum ps3_sys_manager_service_id - Message header service_id. | |
66c63b84 GL |
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. | |
fde5efd0 GL |
106 | */ |
107 | ||
108 | enum 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, | |
66c63b84 | 115 | PS3_SM_SERVICE_ID_REQUEST_ERROR = 6, |
fde5efd0 GL |
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. | |
88393161 | 123 | * @PS3_SM_ATTR_THERMAL: System thermal alert. |
fde5efd0 GL |
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 | ||
132 | enum 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. | |
ea24608f GL |
143 | * @PS3_SM_EVENT_POWER_PRESSED: payload.value = |
144 | * enum ps3_sys_manager_button_event. | |
fde5efd0 | 145 | * @PS3_SM_EVENT_POWER_RELEASED: payload.value = time pressed in millisec. |
ea24608f GL |
146 | * @PS3_SM_EVENT_RESET_PRESSED: payload.value = |
147 | * enum ps3_sys_manager_button_event. | |
fde5efd0 GL |
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 | ||
153 | enum 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 | ||
ea24608f GL |
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 | ||
170 | enum ps3_sys_manager_button_event { | |
171 | PS3_SM_BUTTON_EVENT_HARD = 0, | |
172 | PS3_SM_BUTTON_EVENT_SOFT = 1, | |
173 | }; | |
174 | ||
fde5efd0 GL |
175 | /** |
176 | * enum ps3_sys_manager_next_op - Operation to perform after lpar is destroyed. | |
177 | */ | |
178 | ||
179 | enum 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). | |
5442381c | 188 | * @PS3_SM_WAKE_DEFAULT: Disk insert, power button, eject button. |
1c43d265 | 189 | * @PS3_SM_WAKE_W_O_L: Ether or wireless LAN. |
fde5efd0 GL |
190 | * @PS3_SM_WAKE_P_O_R: Power on reset. |
191 | * | |
192 | * Additional wakeup sources when specifying PS3_SM_NEXT_OP_SYS_SHUTDOWN. | |
50dad902 GL |
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. | |
fde5efd0 GL |
196 | */ |
197 | ||
198 | enum ps3_sys_manager_wake_source { | |
199 | /* version 3 */ | |
200 | PS3_SM_WAKE_DEFAULT = 0, | |
1c43d265 | 201 | PS3_SM_WAKE_W_O_L = 0x00000400, |
50dad902 | 202 | PS3_SM_WAKE_P_O_R = 0x80000000, |
fde5efd0 GL |
203 | }; |
204 | ||
1c43d265 GL |
205 | /** |
206 | * user_wake_sources - User specified wakeup sources. | |
207 | * | |
208 | * Logical OR of enum ps3_sys_manager_wake_source types. | |
209 | */ | |
210 | ||
211 | static u32 user_wake_sources = PS3_SM_WAKE_DEFAULT; | |
212 | ||
fde5efd0 GL |
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 | ||
222 | enum ps3_sys_manager_cmd { | |
223 | /* version 1 */ | |
224 | PS3_SM_CMD_SHUTDOWN = 1, /* shutdown guest OS */ | |
225 | }; | |
226 | ||
66c63b84 GL |
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 | ||
235 | static unsigned int ps3_sm_force_power_off; | |
236 | ||
fde5efd0 GL |
237 | /** |
238 | * ps3_sys_manager_write - Helper to write a two part message to the vuart. | |
239 | * | |
240 | */ | |
241 | ||
66c63b84 | 242 | static int ps3_sys_manager_write(struct ps3_system_bus_device *dev, |
fde5efd0 GL |
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 | ||
66c63b84 | 266 | static int ps3_sys_manager_send_attr(struct ps3_system_bus_device *dev, |
fde5efd0 GL |
267 | enum ps3_sys_manager_attr attr) |
268 | { | |
66c63b84 | 269 | struct ps3_sys_manager_header header; |
fde5efd0 GL |
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 | ||
66c63b84 GL |
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 | ||
fde5efd0 GL |
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 | ||
66c63b84 | 299 | static int ps3_sys_manager_send_next_op(struct ps3_system_bus_device *dev, |
fde5efd0 GL |
300 | enum ps3_sys_manager_next_op op, |
301 | enum ps3_sys_manager_wake_source wake_source) | |
302 | { | |
66c63b84 | 303 | struct ps3_sys_manager_header header; |
fde5efd0 GL |
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 | ||
66c63b84 GL |
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 | ||
fde5efd0 GL |
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 | * | |
66c63b84 | 341 | * Currently, the only supported request is the 'shutdown self' request. |
fde5efd0 GL |
342 | */ |
343 | ||
66c63b84 GL |
344 | static int ps3_sys_manager_send_request_shutdown( |
345 | struct ps3_system_bus_device *dev) | |
fde5efd0 | 346 | { |
66c63b84 | 347 | struct ps3_sys_manager_header header; |
fde5efd0 GL |
348 | struct { |
349 | u8 version; | |
350 | u8 type; | |
351 | u8 gos_id; | |
352 | u8 reserved_1[13]; | |
66c63b84 | 353 | } payload; |
fde5efd0 GL |
354 | |
355 | BUILD_BUG_ON(sizeof(payload) != 16); | |
356 | ||
357 | dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); | |
358 | ||
66c63b84 GL |
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 | ||
fde5efd0 GL |
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 | ||
66c63b84 | 381 | static int ps3_sys_manager_send_response(struct ps3_system_bus_device *dev, |
fde5efd0 GL |
382 | u64 status) |
383 | { | |
66c63b84 | 384 | struct ps3_sys_manager_header header; |
fde5efd0 GL |
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 | ||
66c63b84 GL |
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 | ||
fde5efd0 GL |
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 | ||
66c63b84 | 415 | static int ps3_sys_manager_handle_event(struct ps3_system_bus_device *dev) |
fde5efd0 GL |
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)); | |
66c63b84 | 429 | BUG_ON(result && "need to retry here"); |
fde5efd0 GL |
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: | |
ea24608f GL |
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")); | |
66c63b84 GL |
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 */ | |
fde5efd0 GL |
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); | |
66c63b84 GL |
455 | break; |
456 | case PS3_SM_EVENT_RESET_PRESSED: | |
ea24608f GL |
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")); | |
66c63b84 GL |
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); | |
fde5efd0 GL |
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); | |
eff56c92 | 477 | pr_info("PS3 Thermal Alert Zone %u\n", event.value); |
fde5efd0 GL |
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 | ||
66c63b84 | 497 | static int ps3_sys_manager_handle_cmd(struct ps3_system_bus_device *dev) |
fde5efd0 GL |
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)); | |
66c63b84 | 511 | BUG_ON(result && "need to retry here"); |
fde5efd0 | 512 | |
eff56c92 | 513 | if (result) |
fde5efd0 GL |
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 | * | |
66c63b84 | 535 | * Can be called directly to manually poll vuart and pump message handler. |
fde5efd0 GL |
536 | */ |
537 | ||
66c63b84 | 538 | static int ps3_sys_manager_handle_msg(struct ps3_system_bus_device *dev) |
fde5efd0 GL |
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 | ||
eff56c92 | 546 | if (result) |
fde5efd0 GL |
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); | |
66c63b84 | 552 | dump_sm_header(&header); |
fde5efd0 GL |
553 | goto fail_header; |
554 | } | |
555 | ||
556 | BUILD_BUG_ON(sizeof(header) != 16); | |
66c63b84 GL |
557 | |
558 | if (header.size != 16 || (header.payload_size != 8 | |
559 | && header.payload_size != 16)) { | |
560 | dump_sm_header(&header); | |
561 | BUG(); | |
562 | } | |
fde5efd0 GL |
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); | |
66c63b84 GL |
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; | |
fde5efd0 GL |
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 | ||
583 | fail_header: | |
584 | ps3_vuart_clear_rx_bytes(dev, 0); | |
585 | return -EIO; | |
586 | fail_id: | |
587 | ps3_vuart_clear_rx_bytes(dev, header.payload_size); | |
588 | return -EIO; | |
589 | } | |
590 | ||
ca052f79 GU |
591 | static 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 | ||
fde5efd0 | 608 | /** |
66c63b84 | 609 | * ps3_sys_manager_final_power_off - The final platform machine_power_off routine. |
fde5efd0 | 610 | * |
66c63b84 | 611 | * This routine never returns. The routine disables asynchronous vuart reads |
fde5efd0 GL |
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 | |
66c63b84 GL |
615 | * should only be called from ps3_power_off() through |
616 | * ps3_sys_manager_ops.power_off. | |
fde5efd0 GL |
617 | */ |
618 | ||
66c63b84 | 619 | static void ps3_sys_manager_final_power_off(struct ps3_system_bus_device *dev) |
fde5efd0 | 620 | { |
66c63b84 | 621 | BUG_ON(!dev); |
fde5efd0 GL |
622 | |
623 | dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); | |
624 | ||
625 | ps3_vuart_cancel_async(dev); | |
626 | ||
66c63b84 | 627 | ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_SYS_SHUTDOWN, |
1c43d265 | 628 | user_wake_sources); |
fde5efd0 | 629 | |
ca052f79 | 630 | ps3_sys_manager_fin(dev); |
fde5efd0 GL |
631 | } |
632 | ||
633 | /** | |
66c63b84 | 634 | * ps3_sys_manager_final_restart - The final platform machine_restart routine. |
fde5efd0 | 635 | * |
66c63b84 | 636 | * This routine never returns. The routine disables asynchronous vuart reads |
fde5efd0 GL |
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 | |
66c63b84 | 640 | * should only be called from ps3_restart() through ps3_sys_manager_ops.restart. |
fde5efd0 GL |
641 | */ |
642 | ||
66c63b84 | 643 | static void ps3_sys_manager_final_restart(struct ps3_system_bus_device *dev) |
fde5efd0 | 644 | { |
66c63b84 | 645 | BUG_ON(!dev); |
fde5efd0 GL |
646 | |
647 | dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); | |
648 | ||
66c63b84 GL |
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 | ||
fde5efd0 GL |
657 | ps3_vuart_cancel_async(dev); |
658 | ||
66c63b84 | 659 | ps3_sys_manager_send_attr(dev, 0); |
75ffe88d | 660 | ps3_sys_manager_send_next_op(dev, PS3_SM_NEXT_OP_SYS_REBOOT, |
1c43d265 | 661 | user_wake_sources); |
fde5efd0 | 662 | |
ca052f79 | 663 | ps3_sys_manager_fin(dev); |
fde5efd0 GL |
664 | } |
665 | ||
1c43d265 GL |
666 | /** |
667 | * ps3_sys_manager_get_wol - Get wake-on-lan setting. | |
668 | */ | |
669 | ||
670 | int 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 | } | |
676 | EXPORT_SYMBOL_GPL(ps3_sys_manager_get_wol); | |
677 | ||
678 | /** | |
679 | * ps3_sys_manager_set_wol - Set wake-on-lan setting. | |
680 | */ | |
681 | ||
682 | void 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 | } | |
696 | EXPORT_SYMBOL_GPL(ps3_sys_manager_set_wol); | |
697 | ||
66c63b84 GL |
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 | ||
704 | static 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 | ||
0fe763c5 | 710 | static int ps3_sys_manager_probe(struct ps3_system_bus_device *dev) |
fde5efd0 GL |
711 | { |
712 | int result; | |
66c63b84 | 713 | struct ps3_sys_manager_ops ops; |
fde5efd0 GL |
714 | |
715 | dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); | |
716 | ||
66c63b84 GL |
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); | |
fde5efd0 GL |
724 | |
725 | result = ps3_sys_manager_send_attr(dev, PS3_SM_ATTR_ALL); | |
726 | BUG_ON(result); | |
727 | ||
66c63b84 | 728 | result = ps3_vuart_read_async(dev, PS3_SM_RX_MSG_LEN_MIN); |
fde5efd0 GL |
729 | BUG_ON(result); |
730 | ||
731 | return result; | |
732 | } | |
733 | ||
66c63b84 GL |
734 | static 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 | ||
740 | static void ps3_sys_manager_shutdown(struct ps3_system_bus_device *dev) | |
741 | { | |
742 | dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); | |
743 | } | |
744 | ||
fde5efd0 | 745 | static struct ps3_vuart_port_driver ps3_sys_manager = { |
66c63b84 GL |
746 | .core.match_id = PS3_MATCH_ID_SYSTEM_MANAGER, |
747 | .core.core.name = "ps3_sys_manager", | |
fde5efd0 | 748 | .probe = ps3_sys_manager_probe, |
66c63b84 GL |
749 | .remove = ps3_sys_manager_remove, |
750 | .shutdown = ps3_sys_manager_shutdown, | |
751 | .work = ps3_sys_manager_work, | |
fde5efd0 GL |
752 | }; |
753 | ||
754 | static int __init ps3_sys_manager_init(void) | |
755 | { | |
ef596c69 GU |
756 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) |
757 | return -ENODEV; | |
758 | ||
fde5efd0 GL |
759 | return ps3_vuart_port_driver_register(&ps3_sys_manager); |
760 | } | |
761 | ||
762 | module_init(ps3_sys_manager_init); | |
66c63b84 GL |
763 | /* Module remove not supported. */ |
764 | ||
50dad902 GL |
765 | MODULE_AUTHOR("Sony Corporation"); |
766 | MODULE_LICENSE("GPL v2"); | |
767 | MODULE_DESCRIPTION("PS3 System Manager"); | |
66c63b84 | 768 | MODULE_ALIAS(PS3_MODULE_ALIAS_SYSTEM_MANAGER); |