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1da177e4 | 1 | /* |
c8b84976 SR |
2 | * Copyright (C) 2001 Troy D. Armstrong IBM Corporation |
3 | * Copyright (C) 2004-2005 Stephen Rothwell IBM Corporation | |
4 | * | |
5 | * This modules exists as an interface between a Linux secondary partition | |
6 | * running on an iSeries and the primary partition's Virtual Service | |
7 | * Processor (VSP) object. The VSP has final authority over powering on/off | |
8 | * all partitions in the iSeries. It also provides miscellaneous low-level | |
9 | * machine facility type operations. | |
10 | * | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | */ | |
1da177e4 LT |
26 | |
27 | #include <linux/types.h> | |
28 | #include <linux/errno.h> | |
29 | #include <linux/kernel.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/completion.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/dma-mapping.h> | |
34 | #include <linux/bcd.h> | |
143a1dec | 35 | #include <linux/rtc.h> |
5a0e3ad6 | 36 | #include <linux/slab.h> |
1da177e4 LT |
37 | |
38 | #include <asm/time.h> | |
39 | #include <asm/uaccess.h> | |
d0e8e291 | 40 | #include <asm/paca.h> |
426c1a11 | 41 | #include <asm/abs_addr.h> |
d9523aa1 | 42 | #include <asm/firmware.h> |
bbc8b628 | 43 | #include <asm/iseries/mf.h> |
15b17189 | 44 | #include <asm/iseries/hv_lp_config.h> |
1670b2b2 | 45 | #include <asm/iseries/hv_lp_event.h> |
8875ccfb | 46 | #include <asm/iseries/it_lp_queue.h> |
1da177e4 | 47 | |
c8b84976 SR |
48 | #include "setup.h" |
49 | ||
260de22f | 50 | static int mf_initialized; |
c8b84976 | 51 | |
1da177e4 LT |
52 | /* |
53 | * This is the structure layout for the Machine Facilites LPAR event | |
54 | * flows. | |
55 | */ | |
56 | struct vsp_cmd_data { | |
57 | u64 token; | |
58 | u16 cmd; | |
59 | HvLpIndex lp_index; | |
60 | u8 result_code; | |
61 | u32 reserved; | |
62 | union { | |
63 | u64 state; /* GetStateOut */ | |
64 | u64 ipl_type; /* GetIplTypeOut, Function02SelectIplTypeIn */ | |
65 | u64 ipl_mode; /* GetIplModeOut, Function02SelectIplModeIn */ | |
66 | u64 page[4]; /* GetSrcHistoryIn */ | |
67 | u64 flag; /* GetAutoIplWhenPrimaryIplsOut, | |
68 | SetAutoIplWhenPrimaryIplsIn, | |
69 | WhiteButtonPowerOffIn, | |
70 | Function08FastPowerOffIn, | |
71 | IsSpcnRackPowerIncompleteOut */ | |
72 | struct { | |
73 | u64 token; | |
74 | u64 address_type; | |
75 | u64 side; | |
76 | u32 length; | |
77 | u32 offset; | |
78 | } kern; /* SetKernelImageIn, GetKernelImageIn, | |
79 | SetKernelCmdLineIn, GetKernelCmdLineIn */ | |
80 | u32 length_out; /* GetKernelImageOut, GetKernelCmdLineOut */ | |
81 | u8 reserved[80]; | |
82 | } sub_data; | |
83 | }; | |
84 | ||
85 | struct vsp_rsp_data { | |
86 | struct completion com; | |
87 | struct vsp_cmd_data *response; | |
88 | }; | |
89 | ||
90 | struct alloc_data { | |
91 | u16 size; | |
92 | u16 type; | |
93 | u32 count; | |
94 | u16 reserved1; | |
95 | u8 reserved2; | |
96 | HvLpIndex target_lp; | |
97 | }; | |
98 | ||
99 | struct ce_msg_data; | |
100 | ||
101 | typedef void (*ce_msg_comp_hdlr)(void *token, struct ce_msg_data *vsp_cmd_rsp); | |
102 | ||
103 | struct ce_msg_comp_data { | |
104 | ce_msg_comp_hdlr handler; | |
105 | void *token; | |
106 | }; | |
107 | ||
108 | struct ce_msg_data { | |
109 | u8 ce_msg[12]; | |
110 | char reserved[4]; | |
111 | struct ce_msg_comp_data *completion; | |
112 | }; | |
113 | ||
114 | struct io_mf_lp_event { | |
115 | struct HvLpEvent hp_lp_event; | |
116 | u16 subtype_result_code; | |
117 | u16 reserved1; | |
118 | u32 reserved2; | |
119 | union { | |
120 | struct alloc_data alloc; | |
121 | struct ce_msg_data ce_msg; | |
122 | struct vsp_cmd_data vsp_cmd; | |
123 | } data; | |
124 | }; | |
125 | ||
126 | #define subtype_data(a, b, c, d) \ | |
127 | (((a) << 24) + ((b) << 16) + ((c) << 8) + (d)) | |
128 | ||
129 | /* | |
130 | * All outgoing event traffic is kept on a FIFO queue. The first | |
131 | * pointer points to the one that is outstanding, and all new | |
132 | * requests get stuck on the end. Also, we keep a certain number of | |
133 | * preallocated pending events so that we can operate very early in | |
134 | * the boot up sequence (before kmalloc is ready). | |
135 | */ | |
136 | struct pending_event { | |
137 | struct pending_event *next; | |
138 | struct io_mf_lp_event event; | |
139 | MFCompleteHandler hdlr; | |
140 | char dma_data[72]; | |
141 | unsigned dma_data_length; | |
142 | unsigned remote_address; | |
143 | }; | |
144 | static spinlock_t pending_event_spinlock; | |
145 | static struct pending_event *pending_event_head; | |
146 | static struct pending_event *pending_event_tail; | |
147 | static struct pending_event *pending_event_avail; | |
260de22f ME |
148 | #define PENDING_EVENT_PREALLOC_LEN 16 |
149 | static struct pending_event pending_event_prealloc[PENDING_EVENT_PREALLOC_LEN]; | |
1da177e4 LT |
150 | |
151 | /* | |
152 | * Put a pending event onto the available queue, so it can get reused. | |
153 | * Attention! You must have the pending_event_spinlock before calling! | |
154 | */ | |
155 | static void free_pending_event(struct pending_event *ev) | |
156 | { | |
157 | if (ev != NULL) { | |
158 | ev->next = pending_event_avail; | |
159 | pending_event_avail = ev; | |
160 | } | |
161 | } | |
162 | ||
163 | /* | |
164 | * Enqueue the outbound event onto the stack. If the queue was | |
165 | * empty to begin with, we must also issue it via the Hypervisor | |
166 | * interface. There is a section of code below that will touch | |
167 | * the first stack pointer without the protection of the pending_event_spinlock. | |
168 | * This is OK, because we know that nobody else will be modifying | |
169 | * the first pointer when we do this. | |
170 | */ | |
171 | static int signal_event(struct pending_event *ev) | |
172 | { | |
173 | int rc = 0; | |
174 | unsigned long flags; | |
175 | int go = 1; | |
176 | struct pending_event *ev1; | |
177 | HvLpEvent_Rc hv_rc; | |
178 | ||
179 | /* enqueue the event */ | |
180 | if (ev != NULL) { | |
181 | ev->next = NULL; | |
182 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
183 | if (pending_event_head == NULL) | |
184 | pending_event_head = ev; | |
185 | else { | |
186 | go = 0; | |
187 | pending_event_tail->next = ev; | |
188 | } | |
189 | pending_event_tail = ev; | |
190 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
191 | } | |
192 | ||
193 | /* send the event */ | |
194 | while (go) { | |
195 | go = 0; | |
196 | ||
197 | /* any DMA data to send beforehand? */ | |
198 | if (pending_event_head->dma_data_length > 0) | |
199 | HvCallEvent_dmaToSp(pending_event_head->dma_data, | |
200 | pending_event_head->remote_address, | |
201 | pending_event_head->dma_data_length, | |
202 | HvLpDma_Direction_LocalToRemote); | |
203 | ||
204 | hv_rc = HvCallEvent_signalLpEvent( | |
205 | &pending_event_head->event.hp_lp_event); | |
206 | if (hv_rc != HvLpEvent_Rc_Good) { | |
207 | printk(KERN_ERR "mf.c: HvCallEvent_signalLpEvent() " | |
208 | "failed with %d\n", (int)hv_rc); | |
209 | ||
210 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
211 | ev1 = pending_event_head; | |
212 | pending_event_head = pending_event_head->next; | |
213 | if (pending_event_head != NULL) | |
214 | go = 1; | |
215 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
216 | ||
217 | if (ev1 == ev) | |
218 | rc = -EIO; | |
219 | else if (ev1->hdlr != NULL) | |
220 | (*ev1->hdlr)((void *)ev1->event.hp_lp_event.xCorrelationToken, -EIO); | |
221 | ||
222 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
223 | free_pending_event(ev1); | |
224 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
225 | } | |
226 | } | |
227 | ||
228 | return rc; | |
229 | } | |
230 | ||
231 | /* | |
232 | * Allocate a new pending_event structure, and initialize it. | |
233 | */ | |
234 | static struct pending_event *new_pending_event(void) | |
235 | { | |
236 | struct pending_event *ev = NULL; | |
237 | HvLpIndex primary_lp = HvLpConfig_getPrimaryLpIndex(); | |
238 | unsigned long flags; | |
239 | struct HvLpEvent *hev; | |
240 | ||
241 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
242 | if (pending_event_avail != NULL) { | |
243 | ev = pending_event_avail; | |
244 | pending_event_avail = pending_event_avail->next; | |
245 | } | |
246 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
247 | if (ev == NULL) { | |
248 | ev = kmalloc(sizeof(struct pending_event), GFP_ATOMIC); | |
249 | if (ev == NULL) { | |
250 | printk(KERN_ERR "mf.c: unable to kmalloc %ld bytes\n", | |
251 | sizeof(struct pending_event)); | |
252 | return NULL; | |
253 | } | |
254 | } | |
255 | memset(ev, 0, sizeof(struct pending_event)); | |
256 | hev = &ev->event.hp_lp_event; | |
677f8c0d | 257 | hev->flags = HV_LP_EVENT_VALID | HV_LP_EVENT_DO_ACK | HV_LP_EVENT_INT; |
1da177e4 LT |
258 | hev->xType = HvLpEvent_Type_MachineFac; |
259 | hev->xSourceLp = HvLpConfig_getLpIndex(); | |
260 | hev->xTargetLp = primary_lp; | |
261 | hev->xSizeMinus1 = sizeof(ev->event) - 1; | |
262 | hev->xRc = HvLpEvent_Rc_Good; | |
263 | hev->xSourceInstanceId = HvCallEvent_getSourceLpInstanceId(primary_lp, | |
264 | HvLpEvent_Type_MachineFac); | |
265 | hev->xTargetInstanceId = HvCallEvent_getTargetLpInstanceId(primary_lp, | |
266 | HvLpEvent_Type_MachineFac); | |
267 | ||
268 | return ev; | |
269 | } | |
270 | ||
e8d1673b ME |
271 | static int __maybe_unused |
272 | signal_vsp_instruction(struct vsp_cmd_data *vsp_cmd) | |
1da177e4 LT |
273 | { |
274 | struct pending_event *ev = new_pending_event(); | |
275 | int rc; | |
276 | struct vsp_rsp_data response; | |
277 | ||
278 | if (ev == NULL) | |
279 | return -ENOMEM; | |
280 | ||
281 | init_completion(&response.com); | |
282 | response.response = vsp_cmd; | |
283 | ev->event.hp_lp_event.xSubtype = 6; | |
284 | ev->event.hp_lp_event.x.xSubtypeData = | |
285 | subtype_data('M', 'F', 'V', 'I'); | |
286 | ev->event.data.vsp_cmd.token = (u64)&response; | |
287 | ev->event.data.vsp_cmd.cmd = vsp_cmd->cmd; | |
288 | ev->event.data.vsp_cmd.lp_index = HvLpConfig_getLpIndex(); | |
289 | ev->event.data.vsp_cmd.result_code = 0xFF; | |
290 | ev->event.data.vsp_cmd.reserved = 0; | |
291 | memcpy(&(ev->event.data.vsp_cmd.sub_data), | |
292 | &(vsp_cmd->sub_data), sizeof(vsp_cmd->sub_data)); | |
293 | mb(); | |
294 | ||
295 | rc = signal_event(ev); | |
296 | if (rc == 0) | |
297 | wait_for_completion(&response.com); | |
298 | return rc; | |
299 | } | |
300 | ||
301 | ||
302 | /* | |
303 | * Send a 12-byte CE message to the primary partition VSP object | |
304 | */ | |
305 | static int signal_ce_msg(char *ce_msg, struct ce_msg_comp_data *completion) | |
306 | { | |
307 | struct pending_event *ev = new_pending_event(); | |
308 | ||
309 | if (ev == NULL) | |
310 | return -ENOMEM; | |
311 | ||
312 | ev->event.hp_lp_event.xSubtype = 0; | |
313 | ev->event.hp_lp_event.x.xSubtypeData = | |
314 | subtype_data('M', 'F', 'C', 'E'); | |
315 | memcpy(ev->event.data.ce_msg.ce_msg, ce_msg, 12); | |
316 | ev->event.data.ce_msg.completion = completion; | |
317 | return signal_event(ev); | |
318 | } | |
319 | ||
320 | /* | |
321 | * Send a 12-byte CE message (with no data) to the primary partition VSP object | |
322 | */ | |
323 | static int signal_ce_msg_simple(u8 ce_op, struct ce_msg_comp_data *completion) | |
324 | { | |
325 | u8 ce_msg[12]; | |
326 | ||
327 | memset(ce_msg, 0, sizeof(ce_msg)); | |
328 | ce_msg[3] = ce_op; | |
329 | return signal_ce_msg(ce_msg, completion); | |
330 | } | |
331 | ||
332 | /* | |
333 | * Send a 12-byte CE message and DMA data to the primary partition VSP object | |
334 | */ | |
335 | static int dma_and_signal_ce_msg(char *ce_msg, | |
336 | struct ce_msg_comp_data *completion, void *dma_data, | |
337 | unsigned dma_data_length, unsigned remote_address) | |
338 | { | |
339 | struct pending_event *ev = new_pending_event(); | |
340 | ||
341 | if (ev == NULL) | |
342 | return -ENOMEM; | |
343 | ||
344 | ev->event.hp_lp_event.xSubtype = 0; | |
345 | ev->event.hp_lp_event.x.xSubtypeData = | |
346 | subtype_data('M', 'F', 'C', 'E'); | |
347 | memcpy(ev->event.data.ce_msg.ce_msg, ce_msg, 12); | |
348 | ev->event.data.ce_msg.completion = completion; | |
349 | memcpy(ev->dma_data, dma_data, dma_data_length); | |
350 | ev->dma_data_length = dma_data_length; | |
351 | ev->remote_address = remote_address; | |
352 | return signal_event(ev); | |
353 | } | |
354 | ||
355 | /* | |
356 | * Initiate a nice (hopefully) shutdown of Linux. We simply are | |
357 | * going to try and send the init process a SIGINT signal. If | |
358 | * this fails (why?), we'll simply force it off in a not-so-nice | |
359 | * manner. | |
360 | */ | |
361 | static int shutdown(void) | |
362 | { | |
9ec52099 | 363 | int rc = kill_cad_pid(SIGINT, 1); |
1da177e4 LT |
364 | |
365 | if (rc) { | |
366 | printk(KERN_ALERT "mf.c: SIGINT to init failed (%d), " | |
367 | "hard shutdown commencing\n", rc); | |
368 | mf_power_off(); | |
369 | } else | |
370 | printk(KERN_INFO "mf.c: init has been successfully notified " | |
371 | "to proceed with shutdown\n"); | |
372 | return rc; | |
373 | } | |
374 | ||
375 | /* | |
376 | * The primary partition VSP object is sending us a new | |
377 | * event flow. Handle it... | |
378 | */ | |
379 | static void handle_int(struct io_mf_lp_event *event) | |
380 | { | |
381 | struct ce_msg_data *ce_msg_data; | |
382 | struct ce_msg_data *pce_msg_data; | |
383 | unsigned long flags; | |
384 | struct pending_event *pev; | |
385 | ||
386 | /* ack the interrupt */ | |
387 | event->hp_lp_event.xRc = HvLpEvent_Rc_Good; | |
388 | HvCallEvent_ackLpEvent(&event->hp_lp_event); | |
389 | ||
390 | /* process interrupt */ | |
391 | switch (event->hp_lp_event.xSubtype) { | |
392 | case 0: /* CE message */ | |
393 | ce_msg_data = &event->data.ce_msg; | |
394 | switch (ce_msg_data->ce_msg[3]) { | |
395 | case 0x5B: /* power control notification */ | |
396 | if ((ce_msg_data->ce_msg[5] & 0x20) != 0) { | |
397 | printk(KERN_INFO "mf.c: Commencing partition shutdown\n"); | |
398 | if (shutdown() == 0) | |
399 | signal_ce_msg_simple(0xDB, NULL); | |
400 | } | |
401 | break; | |
402 | case 0xC0: /* get time */ | |
403 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
404 | pev = pending_event_head; | |
405 | if (pev != NULL) | |
406 | pending_event_head = pending_event_head->next; | |
407 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
408 | if (pev == NULL) | |
409 | break; | |
410 | pce_msg_data = &pev->event.data.ce_msg; | |
411 | if (pce_msg_data->ce_msg[3] != 0x40) | |
412 | break; | |
413 | if (pce_msg_data->completion != NULL) { | |
414 | ce_msg_comp_hdlr handler = | |
415 | pce_msg_data->completion->handler; | |
416 | void *token = pce_msg_data->completion->token; | |
417 | ||
418 | if (handler != NULL) | |
419 | (*handler)(token, ce_msg_data); | |
420 | } | |
421 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
422 | free_pending_event(pev); | |
423 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
424 | /* send next waiting event */ | |
425 | if (pending_event_head != NULL) | |
426 | signal_event(NULL); | |
427 | break; | |
428 | } | |
429 | break; | |
430 | case 1: /* IT sys shutdown */ | |
431 | printk(KERN_INFO "mf.c: Commencing system shutdown\n"); | |
432 | shutdown(); | |
433 | break; | |
434 | } | |
435 | } | |
436 | ||
437 | /* | |
438 | * The primary partition VSP object is acknowledging the receipt | |
439 | * of a flow we sent to them. If there are other flows queued | |
440 | * up, we must send another one now... | |
441 | */ | |
442 | static void handle_ack(struct io_mf_lp_event *event) | |
443 | { | |
444 | unsigned long flags; | |
445 | struct pending_event *two = NULL; | |
446 | unsigned long free_it = 0; | |
447 | struct ce_msg_data *ce_msg_data; | |
448 | struct ce_msg_data *pce_msg_data; | |
449 | struct vsp_rsp_data *rsp; | |
450 | ||
451 | /* handle current event */ | |
452 | if (pending_event_head == NULL) { | |
453 | printk(KERN_ERR "mf.c: stack empty for receiving ack\n"); | |
454 | return; | |
455 | } | |
456 | ||
457 | switch (event->hp_lp_event.xSubtype) { | |
458 | case 0: /* CE msg */ | |
459 | ce_msg_data = &event->data.ce_msg; | |
460 | if (ce_msg_data->ce_msg[3] != 0x40) { | |
461 | free_it = 1; | |
462 | break; | |
463 | } | |
464 | if (ce_msg_data->ce_msg[2] == 0) | |
465 | break; | |
466 | free_it = 1; | |
467 | pce_msg_data = &pending_event_head->event.data.ce_msg; | |
468 | if (pce_msg_data->completion != NULL) { | |
469 | ce_msg_comp_hdlr handler = | |
470 | pce_msg_data->completion->handler; | |
471 | void *token = pce_msg_data->completion->token; | |
472 | ||
473 | if (handler != NULL) | |
474 | (*handler)(token, ce_msg_data); | |
475 | } | |
476 | break; | |
477 | case 4: /* allocate */ | |
478 | case 5: /* deallocate */ | |
479 | if (pending_event_head->hdlr != NULL) | |
480 | (*pending_event_head->hdlr)((void *)event->hp_lp_event.xCorrelationToken, event->data.alloc.count); | |
481 | free_it = 1; | |
482 | break; | |
483 | case 6: | |
484 | free_it = 1; | |
485 | rsp = (struct vsp_rsp_data *)event->data.vsp_cmd.token; | |
486 | if (rsp == NULL) { | |
487 | printk(KERN_ERR "mf.c: no rsp\n"); | |
488 | break; | |
489 | } | |
490 | if (rsp->response != NULL) | |
491 | memcpy(rsp->response, &event->data.vsp_cmd, | |
492 | sizeof(event->data.vsp_cmd)); | |
493 | complete(&rsp->com); | |
494 | break; | |
495 | } | |
496 | ||
497 | /* remove from queue */ | |
498 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
499 | if ((pending_event_head != NULL) && (free_it == 1)) { | |
500 | struct pending_event *oldHead = pending_event_head; | |
501 | ||
502 | pending_event_head = pending_event_head->next; | |
503 | two = pending_event_head; | |
504 | free_pending_event(oldHead); | |
505 | } | |
506 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
507 | ||
508 | /* send next waiting event */ | |
509 | if (two != NULL) | |
510 | signal_event(NULL); | |
511 | } | |
512 | ||
513 | /* | |
514 | * This is the generic event handler we are registering with | |
515 | * the Hypervisor. Ensure the flows are for us, and then | |
516 | * parse it enough to know if it is an interrupt or an | |
517 | * acknowledge. | |
518 | */ | |
35a84c2f | 519 | static void hv_handler(struct HvLpEvent *event) |
1da177e4 LT |
520 | { |
521 | if ((event != NULL) && (event->xType == HvLpEvent_Type_MachineFac)) { | |
677f8c0d | 522 | if (hvlpevent_is_ack(event)) |
1da177e4 | 523 | handle_ack((struct io_mf_lp_event *)event); |
677f8c0d | 524 | else |
1da177e4 | 525 | handle_int((struct io_mf_lp_event *)event); |
1da177e4 LT |
526 | } else |
527 | printk(KERN_ERR "mf.c: alien event received\n"); | |
528 | } | |
529 | ||
530 | /* | |
531 | * Global kernel interface to allocate and seed events into the | |
532 | * Hypervisor. | |
533 | */ | |
534 | void mf_allocate_lp_events(HvLpIndex target_lp, HvLpEvent_Type type, | |
535 | unsigned size, unsigned count, MFCompleteHandler hdlr, | |
536 | void *user_token) | |
537 | { | |
538 | struct pending_event *ev = new_pending_event(); | |
539 | int rc; | |
540 | ||
541 | if (ev == NULL) { | |
542 | rc = -ENOMEM; | |
543 | } else { | |
544 | ev->event.hp_lp_event.xSubtype = 4; | |
545 | ev->event.hp_lp_event.xCorrelationToken = (u64)user_token; | |
546 | ev->event.hp_lp_event.x.xSubtypeData = | |
547 | subtype_data('M', 'F', 'M', 'A'); | |
548 | ev->event.data.alloc.target_lp = target_lp; | |
549 | ev->event.data.alloc.type = type; | |
550 | ev->event.data.alloc.size = size; | |
551 | ev->event.data.alloc.count = count; | |
552 | ev->hdlr = hdlr; | |
553 | rc = signal_event(ev); | |
554 | } | |
555 | if ((rc != 0) && (hdlr != NULL)) | |
556 | (*hdlr)(user_token, rc); | |
557 | } | |
558 | EXPORT_SYMBOL(mf_allocate_lp_events); | |
559 | ||
560 | /* | |
561 | * Global kernel interface to unseed and deallocate events already in | |
562 | * Hypervisor. | |
563 | */ | |
564 | void mf_deallocate_lp_events(HvLpIndex target_lp, HvLpEvent_Type type, | |
565 | unsigned count, MFCompleteHandler hdlr, void *user_token) | |
566 | { | |
567 | struct pending_event *ev = new_pending_event(); | |
568 | int rc; | |
569 | ||
570 | if (ev == NULL) | |
571 | rc = -ENOMEM; | |
572 | else { | |
573 | ev->event.hp_lp_event.xSubtype = 5; | |
574 | ev->event.hp_lp_event.xCorrelationToken = (u64)user_token; | |
575 | ev->event.hp_lp_event.x.xSubtypeData = | |
576 | subtype_data('M', 'F', 'M', 'D'); | |
577 | ev->event.data.alloc.target_lp = target_lp; | |
578 | ev->event.data.alloc.type = type; | |
579 | ev->event.data.alloc.count = count; | |
580 | ev->hdlr = hdlr; | |
581 | rc = signal_event(ev); | |
582 | } | |
583 | if ((rc != 0) && (hdlr != NULL)) | |
584 | (*hdlr)(user_token, rc); | |
585 | } | |
586 | EXPORT_SYMBOL(mf_deallocate_lp_events); | |
587 | ||
588 | /* | |
589 | * Global kernel interface to tell the VSP object in the primary | |
590 | * partition to power this partition off. | |
591 | */ | |
592 | void mf_power_off(void) | |
593 | { | |
594 | printk(KERN_INFO "mf.c: Down it goes...\n"); | |
595 | signal_ce_msg_simple(0x4d, NULL); | |
596 | for (;;) | |
597 | ; | |
598 | } | |
599 | ||
600 | /* | |
601 | * Global kernel interface to tell the VSP object in the primary | |
602 | * partition to reboot this partition. | |
603 | */ | |
a9ea2101 | 604 | void mf_reboot(char *cmd) |
1da177e4 LT |
605 | { |
606 | printk(KERN_INFO "mf.c: Preparing to bounce...\n"); | |
607 | signal_ce_msg_simple(0x4e, NULL); | |
608 | for (;;) | |
609 | ; | |
610 | } | |
611 | ||
612 | /* | |
613 | * Display a single word SRC onto the VSP control panel. | |
614 | */ | |
615 | void mf_display_src(u32 word) | |
616 | { | |
617 | u8 ce[12]; | |
618 | ||
619 | memset(ce, 0, sizeof(ce)); | |
620 | ce[3] = 0x4a; | |
621 | ce[7] = 0x01; | |
622 | ce[8] = word >> 24; | |
623 | ce[9] = word >> 16; | |
624 | ce[10] = word >> 8; | |
625 | ce[11] = word; | |
626 | signal_ce_msg(ce, NULL); | |
627 | } | |
628 | ||
629 | /* | |
630 | * Display a single word SRC of the form "PROGXXXX" on the VSP control panel. | |
631 | */ | |
260de22f | 632 | static __init void mf_display_progress_src(u16 value) |
1da177e4 LT |
633 | { |
634 | u8 ce[12]; | |
635 | u8 src[72]; | |
636 | ||
637 | memcpy(ce, "\x00\x00\x04\x4A\x00\x00\x00\x48\x00\x00\x00\x00", 12); | |
638 | memcpy(src, "\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00" | |
639 | "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" | |
640 | "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" | |
641 | "\x00\x00\x00\x00PROGxxxx ", | |
642 | 72); | |
643 | src[6] = value >> 8; | |
644 | src[7] = value & 255; | |
645 | src[44] = "0123456789ABCDEF"[(value >> 12) & 15]; | |
646 | src[45] = "0123456789ABCDEF"[(value >> 8) & 15]; | |
647 | src[46] = "0123456789ABCDEF"[(value >> 4) & 15]; | |
648 | src[47] = "0123456789ABCDEF"[value & 15]; | |
649 | dma_and_signal_ce_msg(ce, NULL, src, sizeof(src), 9 * 64 * 1024); | |
650 | } | |
651 | ||
652 | /* | |
653 | * Clear the VSP control panel. Used to "erase" an SRC that was | |
654 | * previously displayed. | |
655 | */ | |
260de22f | 656 | static void mf_clear_src(void) |
1da177e4 LT |
657 | { |
658 | signal_ce_msg_simple(0x4b, NULL); | |
659 | } | |
660 | ||
260de22f ME |
661 | void __init mf_display_progress(u16 value) |
662 | { | |
4bd174fe | 663 | if (!mf_initialized) |
260de22f ME |
664 | return; |
665 | ||
666 | if (0xFFFF == value) | |
667 | mf_clear_src(); | |
668 | else | |
669 | mf_display_progress_src(value); | |
670 | } | |
671 | ||
1da177e4 LT |
672 | /* |
673 | * Initialization code here. | |
674 | */ | |
260de22f | 675 | void __init mf_init(void) |
1da177e4 LT |
676 | { |
677 | int i; | |
678 | ||
1da177e4 | 679 | spin_lock_init(&pending_event_spinlock); |
260de22f ME |
680 | |
681 | for (i = 0; i < PENDING_EVENT_PREALLOC_LEN; i++) | |
1da177e4 | 682 | free_pending_event(&pending_event_prealloc[i]); |
260de22f | 683 | |
1da177e4 LT |
684 | HvLpEvent_registerHandler(HvLpEvent_Type_MachineFac, &hv_handler); |
685 | ||
686 | /* virtual continue ack */ | |
687 | signal_ce_msg_simple(0x57, NULL); | |
688 | ||
260de22f ME |
689 | mf_initialized = 1; |
690 | mb(); | |
691 | ||
1da177e4 LT |
692 | printk(KERN_NOTICE "mf.c: iSeries Linux LPAR Machine Facilities " |
693 | "initialized\n"); | |
694 | } | |
695 | ||
696 | struct rtc_time_data { | |
697 | struct completion com; | |
698 | struct ce_msg_data ce_msg; | |
699 | int rc; | |
700 | }; | |
701 | ||
702 | static void get_rtc_time_complete(void *token, struct ce_msg_data *ce_msg) | |
703 | { | |
704 | struct rtc_time_data *rtc = token; | |
705 | ||
706 | memcpy(&rtc->ce_msg, ce_msg, sizeof(rtc->ce_msg)); | |
707 | rtc->rc = 0; | |
708 | complete(&rtc->com); | |
709 | } | |
710 | ||
00611c5c ME |
711 | static int mf_set_rtc(struct rtc_time *tm) |
712 | { | |
713 | char ce_time[12]; | |
714 | u8 day, mon, hour, min, sec, y1, y2; | |
715 | unsigned year; | |
716 | ||
717 | year = 1900 + tm->tm_year; | |
718 | y1 = year / 100; | |
719 | y2 = year % 100; | |
720 | ||
721 | sec = tm->tm_sec; | |
722 | min = tm->tm_min; | |
723 | hour = tm->tm_hour; | |
724 | day = tm->tm_mday; | |
725 | mon = tm->tm_mon + 1; | |
726 | ||
8f6ba492 AB |
727 | sec = bin2bcd(sec); |
728 | min = bin2bcd(min); | |
729 | hour = bin2bcd(hour); | |
730 | mon = bin2bcd(mon); | |
731 | day = bin2bcd(day); | |
732 | y1 = bin2bcd(y1); | |
733 | y2 = bin2bcd(y2); | |
00611c5c ME |
734 | |
735 | memset(ce_time, 0, sizeof(ce_time)); | |
736 | ce_time[3] = 0x41; | |
737 | ce_time[4] = y1; | |
738 | ce_time[5] = y2; | |
739 | ce_time[6] = sec; | |
740 | ce_time[7] = min; | |
741 | ce_time[8] = hour; | |
742 | ce_time[10] = day; | |
743 | ce_time[11] = mon; | |
744 | ||
745 | return signal_ce_msg(ce_time, NULL); | |
746 | } | |
747 | ||
d0e8e291 | 748 | static int rtc_set_tm(int rc, u8 *ce_msg, struct rtc_time *tm) |
1da177e4 | 749 | { |
1da177e4 LT |
750 | tm->tm_wday = 0; |
751 | tm->tm_yday = 0; | |
752 | tm->tm_isdst = 0; | |
d0e8e291 | 753 | if (rc) { |
1da177e4 LT |
754 | tm->tm_sec = 0; |
755 | tm->tm_min = 0; | |
756 | tm->tm_hour = 0; | |
757 | tm->tm_mday = 15; | |
758 | tm->tm_mon = 5; | |
759 | tm->tm_year = 52; | |
d0e8e291 | 760 | return rc; |
1da177e4 LT |
761 | } |
762 | ||
d0e8e291 SR |
763 | if ((ce_msg[2] == 0xa9) || |
764 | (ce_msg[2] == 0xaf)) { | |
1da177e4 LT |
765 | /* TOD clock is not set */ |
766 | tm->tm_sec = 1; | |
767 | tm->tm_min = 1; | |
768 | tm->tm_hour = 1; | |
769 | tm->tm_mday = 10; | |
770 | tm->tm_mon = 8; | |
771 | tm->tm_year = 71; | |
772 | mf_set_rtc(tm); | |
773 | } | |
774 | { | |
1da177e4 LT |
775 | u8 year = ce_msg[5]; |
776 | u8 sec = ce_msg[6]; | |
777 | u8 min = ce_msg[7]; | |
778 | u8 hour = ce_msg[8]; | |
779 | u8 day = ce_msg[10]; | |
780 | u8 mon = ce_msg[11]; | |
781 | ||
8f6ba492 AB |
782 | sec = bcd2bin(sec); |
783 | min = bcd2bin(min); | |
784 | hour = bcd2bin(hour); | |
785 | day = bcd2bin(day); | |
786 | mon = bcd2bin(mon); | |
787 | year = bcd2bin(year); | |
1da177e4 LT |
788 | |
789 | if (year <= 69) | |
790 | year += 100; | |
791 | ||
792 | tm->tm_sec = sec; | |
793 | tm->tm_min = min; | |
794 | tm->tm_hour = hour; | |
795 | tm->tm_mday = day; | |
796 | tm->tm_mon = mon; | |
797 | tm->tm_year = year; | |
798 | } | |
799 | ||
800 | return 0; | |
801 | } | |
d0e8e291 | 802 | |
00611c5c | 803 | static int mf_get_rtc(struct rtc_time *tm) |
d0e8e291 SR |
804 | { |
805 | struct ce_msg_comp_data ce_complete; | |
806 | struct rtc_time_data rtc_data; | |
807 | int rc; | |
808 | ||
809 | memset(&ce_complete, 0, sizeof(ce_complete)); | |
810 | memset(&rtc_data, 0, sizeof(rtc_data)); | |
811 | init_completion(&rtc_data.com); | |
812 | ce_complete.handler = &get_rtc_time_complete; | |
813 | ce_complete.token = &rtc_data; | |
814 | rc = signal_ce_msg_simple(0x40, &ce_complete); | |
815 | if (rc) | |
816 | return rc; | |
817 | wait_for_completion(&rtc_data.com); | |
818 | return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm); | |
819 | } | |
820 | ||
821 | struct boot_rtc_time_data { | |
822 | int busy; | |
823 | struct ce_msg_data ce_msg; | |
824 | int rc; | |
825 | }; | |
826 | ||
827 | static void get_boot_rtc_time_complete(void *token, struct ce_msg_data *ce_msg) | |
828 | { | |
829 | struct boot_rtc_time_data *rtc = token; | |
830 | ||
831 | memcpy(&rtc->ce_msg, ce_msg, sizeof(rtc->ce_msg)); | |
832 | rtc->rc = 0; | |
833 | rtc->busy = 0; | |
834 | } | |
835 | ||
00611c5c | 836 | static int mf_get_boot_rtc(struct rtc_time *tm) |
d0e8e291 SR |
837 | { |
838 | struct ce_msg_comp_data ce_complete; | |
839 | struct boot_rtc_time_data rtc_data; | |
840 | int rc; | |
841 | ||
842 | memset(&ce_complete, 0, sizeof(ce_complete)); | |
843 | memset(&rtc_data, 0, sizeof(rtc_data)); | |
844 | rtc_data.busy = 1; | |
845 | ce_complete.handler = &get_boot_rtc_time_complete; | |
846 | ce_complete.token = &rtc_data; | |
847 | rc = signal_ce_msg_simple(0x40, &ce_complete); | |
848 | if (rc) | |
849 | return rc; | |
850 | /* We need to poll here as we are not yet taking interrupts */ | |
851 | while (rtc_data.busy) { | |
937b31b1 | 852 | if (hvlpevent_is_pending()) |
35a84c2f | 853 | process_hvlpevents(); |
d0e8e291 SR |
854 | } |
855 | return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm); | |
856 | } | |
1da177e4 | 857 | |
1da177e4 | 858 | #ifdef CONFIG_PROC_FS |
5c916a29 | 859 | static int mf_cmdline_proc_show(struct seq_file *m, void *v) |
1da177e4 | 860 | { |
5c916a29 | 861 | char *page, *p; |
1da177e4 LT |
862 | struct vsp_cmd_data vsp_cmd; |
863 | int rc; | |
864 | dma_addr_t dma_addr; | |
865 | ||
866 | /* The HV appears to return no more than 256 bytes of command line */ | |
5c916a29 AD |
867 | page = kmalloc(256, GFP_KERNEL); |
868 | if (!page) | |
869 | return -ENOMEM; | |
1da177e4 | 870 | |
5c916a29 AD |
871 | dma_addr = iseries_hv_map(page, 256, DMA_FROM_DEVICE); |
872 | if (dma_addr == DMA_ERROR_CODE) { | |
873 | kfree(page); | |
1da177e4 | 874 | return -ENOMEM; |
5c916a29 AD |
875 | } |
876 | memset(page, 0, 256); | |
1da177e4 LT |
877 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); |
878 | vsp_cmd.cmd = 33; | |
879 | vsp_cmd.sub_data.kern.token = dma_addr; | |
880 | vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex; | |
5c916a29 AD |
881 | vsp_cmd.sub_data.kern.side = (u64)m->private; |
882 | vsp_cmd.sub_data.kern.length = 256; | |
1da177e4 LT |
883 | mb(); |
884 | rc = signal_vsp_instruction(&vsp_cmd); | |
5c916a29 AD |
885 | iseries_hv_unmap(dma_addr, 256, DMA_FROM_DEVICE); |
886 | if (rc) { | |
887 | kfree(page); | |
1da177e4 | 888 | return rc; |
5c916a29 AD |
889 | } |
890 | if (vsp_cmd.result_code != 0) { | |
891 | kfree(page); | |
1da177e4 | 892 | return -ENOMEM; |
5c916a29 | 893 | } |
1da177e4 | 894 | p = page; |
5c916a29 AD |
895 | while (p - page < 256) { |
896 | if (*p == '\0' || *p == '\n') { | |
897 | *p = '\n'; | |
1da177e4 LT |
898 | break; |
899 | } | |
900 | p++; | |
1da177e4 | 901 | |
1da177e4 | 902 | } |
5c916a29 AD |
903 | seq_write(m, page, p - page); |
904 | kfree(page); | |
905 | return 0; | |
906 | } | |
907 | ||
908 | static int mf_cmdline_proc_open(struct inode *inode, struct file *file) | |
909 | { | |
910 | return single_open(file, mf_cmdline_proc_show, PDE(inode)->data); | |
1da177e4 LT |
911 | } |
912 | ||
913 | #if 0 | |
914 | static int mf_getVmlinuxChunk(char *buffer, int *size, int offset, u64 side) | |
915 | { | |
916 | struct vsp_cmd_data vsp_cmd; | |
917 | int rc; | |
918 | int len = *size; | |
919 | dma_addr_t dma_addr; | |
920 | ||
1670b2b2 | 921 | dma_addr = iseries_hv_map(buffer, len, DMA_FROM_DEVICE); |
1da177e4 LT |
922 | memset(buffer, 0, len); |
923 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); | |
924 | vsp_cmd.cmd = 32; | |
925 | vsp_cmd.sub_data.kern.token = dma_addr; | |
926 | vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex; | |
927 | vsp_cmd.sub_data.kern.side = side; | |
928 | vsp_cmd.sub_data.kern.offset = offset; | |
929 | vsp_cmd.sub_data.kern.length = len; | |
930 | mb(); | |
931 | rc = signal_vsp_instruction(&vsp_cmd); | |
932 | if (rc == 0) { | |
933 | if (vsp_cmd.result_code == 0) | |
934 | *size = vsp_cmd.sub_data.length_out; | |
935 | else | |
936 | rc = -ENOMEM; | |
937 | } | |
938 | ||
1670b2b2 | 939 | iseries_hv_unmap(dma_addr, len, DMA_FROM_DEVICE); |
1da177e4 LT |
940 | |
941 | return rc; | |
942 | } | |
943 | ||
944 | static int proc_mf_dump_vmlinux(char *page, char **start, off_t off, | |
945 | int count, int *eof, void *data) | |
946 | { | |
947 | int sizeToGet = count; | |
948 | ||
949 | if (!capable(CAP_SYS_ADMIN)) | |
950 | return -EACCES; | |
951 | ||
952 | if (mf_getVmlinuxChunk(page, &sizeToGet, off, (u64)data) == 0) { | |
953 | if (sizeToGet != 0) { | |
954 | *start = page + off; | |
955 | return sizeToGet; | |
956 | } | |
957 | *eof = 1; | |
958 | return 0; | |
959 | } | |
960 | *eof = 1; | |
961 | return 0; | |
962 | } | |
963 | #endif | |
964 | ||
5c916a29 | 965 | static int mf_side_proc_show(struct seq_file *m, void *v) |
1da177e4 | 966 | { |
1da177e4 LT |
967 | char mf_current_side = ' '; |
968 | struct vsp_cmd_data vsp_cmd; | |
969 | ||
970 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); | |
971 | vsp_cmd.cmd = 2; | |
972 | vsp_cmd.sub_data.ipl_type = 0; | |
973 | mb(); | |
974 | ||
975 | if (signal_vsp_instruction(&vsp_cmd) == 0) { | |
976 | if (vsp_cmd.result_code == 0) { | |
977 | switch (vsp_cmd.sub_data.ipl_type) { | |
978 | case 0: mf_current_side = 'A'; | |
979 | break; | |
980 | case 1: mf_current_side = 'B'; | |
981 | break; | |
982 | case 2: mf_current_side = 'C'; | |
983 | break; | |
984 | default: mf_current_side = 'D'; | |
985 | break; | |
986 | } | |
987 | } | |
988 | } | |
989 | ||
5c916a29 AD |
990 | seq_printf(m, "%c\n", mf_current_side); |
991 | return 0; | |
992 | } | |
1da177e4 | 993 | |
5c916a29 AD |
994 | static int mf_side_proc_open(struct inode *inode, struct file *file) |
995 | { | |
996 | return single_open(file, mf_side_proc_show, NULL); | |
1da177e4 LT |
997 | } |
998 | ||
5c916a29 AD |
999 | static ssize_t mf_side_proc_write(struct file *file, const char __user *buffer, |
1000 | size_t count, loff_t *pos) | |
1da177e4 LT |
1001 | { |
1002 | char side; | |
1003 | u64 newSide; | |
1004 | struct vsp_cmd_data vsp_cmd; | |
1005 | ||
1006 | if (!capable(CAP_SYS_ADMIN)) | |
1007 | return -EACCES; | |
1008 | ||
1009 | if (count == 0) | |
1010 | return 0; | |
1011 | ||
1012 | if (get_user(side, buffer)) | |
1013 | return -EFAULT; | |
1014 | ||
1015 | switch (side) { | |
1016 | case 'A': newSide = 0; | |
1017 | break; | |
1018 | case 'B': newSide = 1; | |
1019 | break; | |
1020 | case 'C': newSide = 2; | |
1021 | break; | |
1022 | case 'D': newSide = 3; | |
1023 | break; | |
1024 | default: | |
1025 | printk(KERN_ERR "mf_proc.c: proc_mf_change_side: invalid side\n"); | |
1026 | return -EINVAL; | |
1027 | } | |
1028 | ||
1029 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); | |
1030 | vsp_cmd.sub_data.ipl_type = newSide; | |
1031 | vsp_cmd.cmd = 10; | |
1032 | ||
1033 | (void)signal_vsp_instruction(&vsp_cmd); | |
1034 | ||
1035 | return count; | |
1036 | } | |
1037 | ||
5c916a29 AD |
1038 | static const struct file_operations mf_side_proc_fops = { |
1039 | .owner = THIS_MODULE, | |
1040 | .open = mf_side_proc_open, | |
1041 | .read = seq_read, | |
1042 | .llseek = seq_lseek, | |
1043 | .release = single_release, | |
1044 | .write = mf_side_proc_write, | |
1045 | }; | |
1046 | ||
1da177e4 LT |
1047 | #if 0 |
1048 | static void mf_getSrcHistory(char *buffer, int size) | |
1049 | { | |
1050 | struct IplTypeReturnStuff return_stuff; | |
1051 | struct pending_event *ev = new_pending_event(); | |
1052 | int rc = 0; | |
1053 | char *pages[4]; | |
1054 | ||
1055 | pages[0] = kmalloc(4096, GFP_ATOMIC); | |
1056 | pages[1] = kmalloc(4096, GFP_ATOMIC); | |
1057 | pages[2] = kmalloc(4096, GFP_ATOMIC); | |
1058 | pages[3] = kmalloc(4096, GFP_ATOMIC); | |
1059 | if ((ev == NULL) || (pages[0] == NULL) || (pages[1] == NULL) | |
1060 | || (pages[2] == NULL) || (pages[3] == NULL)) | |
1061 | return -ENOMEM; | |
1062 | ||
1063 | return_stuff.xType = 0; | |
1064 | return_stuff.xRc = 0; | |
1065 | return_stuff.xDone = 0; | |
1066 | ev->event.hp_lp_event.xSubtype = 6; | |
1067 | ev->event.hp_lp_event.x.xSubtypeData = | |
1068 | subtype_data('M', 'F', 'V', 'I'); | |
1069 | ev->event.data.vsp_cmd.xEvent = &return_stuff; | |
1070 | ev->event.data.vsp_cmd.cmd = 4; | |
1071 | ev->event.data.vsp_cmd.lp_index = HvLpConfig_getLpIndex(); | |
1072 | ev->event.data.vsp_cmd.result_code = 0xFF; | |
1073 | ev->event.data.vsp_cmd.reserved = 0; | |
426c1a11 SR |
1074 | ev->event.data.vsp_cmd.sub_data.page[0] = iseries_hv_addr(pages[0]); |
1075 | ev->event.data.vsp_cmd.sub_data.page[1] = iseries_hv_addr(pages[1]); | |
1076 | ev->event.data.vsp_cmd.sub_data.page[2] = iseries_hv_addr(pages[2]); | |
1077 | ev->event.data.vsp_cmd.sub_data.page[3] = iseries_hv_addr(pages[3]); | |
1da177e4 LT |
1078 | mb(); |
1079 | if (signal_event(ev) != 0) | |
1080 | return; | |
1081 | ||
1082 | while (return_stuff.xDone != 1) | |
1083 | udelay(10); | |
1084 | if (return_stuff.xRc == 0) | |
1085 | memcpy(buffer, pages[0], size); | |
1086 | kfree(pages[0]); | |
1087 | kfree(pages[1]); | |
1088 | kfree(pages[2]); | |
1089 | kfree(pages[3]); | |
1090 | } | |
1091 | #endif | |
1092 | ||
5c916a29 | 1093 | static int mf_src_proc_show(struct seq_file *m, void *v) |
1da177e4 LT |
1094 | { |
1095 | #if 0 | |
1096 | int len; | |
1097 | ||
1098 | mf_getSrcHistory(page, count); | |
1099 | len = count; | |
1100 | len -= off; | |
1101 | if (len < count) { | |
1102 | *eof = 1; | |
1103 | if (len <= 0) | |
1104 | return 0; | |
1105 | } else | |
1106 | len = count; | |
1107 | *start = page + off; | |
1108 | return len; | |
1109 | #else | |
1110 | return 0; | |
1111 | #endif | |
1112 | } | |
1113 | ||
5c916a29 AD |
1114 | static int mf_src_proc_open(struct inode *inode, struct file *file) |
1115 | { | |
1116 | return single_open(file, mf_src_proc_show, NULL); | |
1117 | } | |
1118 | ||
1119 | static ssize_t mf_src_proc_write(struct file *file, const char __user *buffer, | |
1120 | size_t count, loff_t *pos) | |
1da177e4 LT |
1121 | { |
1122 | char stkbuf[10]; | |
1123 | ||
1124 | if (!capable(CAP_SYS_ADMIN)) | |
1125 | return -EACCES; | |
1126 | ||
1127 | if ((count < 4) && (count != 1)) { | |
1128 | printk(KERN_ERR "mf_proc: invalid src\n"); | |
1129 | return -EINVAL; | |
1130 | } | |
1131 | ||
1132 | if (count > (sizeof(stkbuf) - 1)) | |
1133 | count = sizeof(stkbuf) - 1; | |
1134 | if (copy_from_user(stkbuf, buffer, count)) | |
1135 | return -EFAULT; | |
1136 | ||
1137 | if ((count == 1) && (*stkbuf == '\0')) | |
1138 | mf_clear_src(); | |
1139 | else | |
1140 | mf_display_src(*(u32 *)stkbuf); | |
1141 | ||
1142 | return count; | |
1143 | } | |
1144 | ||
5c916a29 AD |
1145 | static const struct file_operations mf_src_proc_fops = { |
1146 | .owner = THIS_MODULE, | |
1147 | .open = mf_src_proc_open, | |
1148 | .read = seq_read, | |
1149 | .llseek = seq_lseek, | |
1150 | .release = single_release, | |
1151 | .write = mf_src_proc_write, | |
1152 | }; | |
1153 | ||
1154 | static ssize_t mf_cmdline_proc_write(struct file *file, const char __user *buffer, | |
1155 | size_t count, loff_t *pos) | |
1da177e4 | 1156 | { |
5c916a29 | 1157 | void *data = PDE(file->f_path.dentry->d_inode)->data; |
1da177e4 LT |
1158 | struct vsp_cmd_data vsp_cmd; |
1159 | dma_addr_t dma_addr; | |
1160 | char *page; | |
1161 | int ret = -EACCES; | |
1162 | ||
1163 | if (!capable(CAP_SYS_ADMIN)) | |
1164 | goto out; | |
1165 | ||
1166 | dma_addr = 0; | |
1670b2b2 | 1167 | page = iseries_hv_alloc(count, &dma_addr, GFP_ATOMIC); |
1da177e4 LT |
1168 | ret = -ENOMEM; |
1169 | if (page == NULL) | |
1170 | goto out; | |
1171 | ||
1172 | ret = -EFAULT; | |
1173 | if (copy_from_user(page, buffer, count)) | |
1174 | goto out_free; | |
1175 | ||
1176 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); | |
1177 | vsp_cmd.cmd = 31; | |
1178 | vsp_cmd.sub_data.kern.token = dma_addr; | |
1179 | vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex; | |
1180 | vsp_cmd.sub_data.kern.side = (u64)data; | |
1181 | vsp_cmd.sub_data.kern.length = count; | |
1182 | mb(); | |
1183 | (void)signal_vsp_instruction(&vsp_cmd); | |
1184 | ret = count; | |
1185 | ||
1186 | out_free: | |
1670b2b2 | 1187 | iseries_hv_free(count, page, dma_addr); |
1da177e4 LT |
1188 | out: |
1189 | return ret; | |
1190 | } | |
1191 | ||
5c916a29 AD |
1192 | static const struct file_operations mf_cmdline_proc_fops = { |
1193 | .owner = THIS_MODULE, | |
1194 | .open = mf_cmdline_proc_open, | |
1195 | .read = seq_read, | |
1196 | .llseek = seq_lseek, | |
1197 | .release = single_release, | |
1198 | .write = mf_cmdline_proc_write, | |
1199 | }; | |
1200 | ||
1da177e4 LT |
1201 | static ssize_t proc_mf_change_vmlinux(struct file *file, |
1202 | const char __user *buf, | |
1203 | size_t count, loff_t *ppos) | |
1204 | { | |
b4d1ab58 | 1205 | struct proc_dir_entry *dp = PDE(file->f_path.dentry->d_inode); |
1da177e4 LT |
1206 | ssize_t rc; |
1207 | dma_addr_t dma_addr; | |
1208 | char *page; | |
1209 | struct vsp_cmd_data vsp_cmd; | |
1210 | ||
1211 | rc = -EACCES; | |
1212 | if (!capable(CAP_SYS_ADMIN)) | |
1213 | goto out; | |
1214 | ||
1215 | dma_addr = 0; | |
1670b2b2 | 1216 | page = iseries_hv_alloc(count, &dma_addr, GFP_ATOMIC); |
1da177e4 LT |
1217 | rc = -ENOMEM; |
1218 | if (page == NULL) { | |
1219 | printk(KERN_ERR "mf.c: couldn't allocate memory to set vmlinux chunk\n"); | |
1220 | goto out; | |
1221 | } | |
1222 | rc = -EFAULT; | |
1223 | if (copy_from_user(page, buf, count)) | |
1224 | goto out_free; | |
1225 | ||
1226 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); | |
1227 | vsp_cmd.cmd = 30; | |
1228 | vsp_cmd.sub_data.kern.token = dma_addr; | |
1229 | vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex; | |
1230 | vsp_cmd.sub_data.kern.side = (u64)dp->data; | |
1231 | vsp_cmd.sub_data.kern.offset = *ppos; | |
1232 | vsp_cmd.sub_data.kern.length = count; | |
1233 | mb(); | |
1234 | rc = signal_vsp_instruction(&vsp_cmd); | |
1235 | if (rc) | |
1236 | goto out_free; | |
1237 | rc = -ENOMEM; | |
1238 | if (vsp_cmd.result_code != 0) | |
1239 | goto out_free; | |
1240 | ||
1241 | *ppos += count; | |
1242 | rc = count; | |
1243 | out_free: | |
1670b2b2 | 1244 | iseries_hv_free(count, page, dma_addr); |
1da177e4 LT |
1245 | out: |
1246 | return rc; | |
1247 | } | |
1248 | ||
5dfe4c96 | 1249 | static const struct file_operations proc_vmlinux_operations = { |
1da177e4 LT |
1250 | .write = proc_mf_change_vmlinux, |
1251 | }; | |
1252 | ||
1253 | static int __init mf_proc_init(void) | |
1254 | { | |
1255 | struct proc_dir_entry *mf_proc_root; | |
1256 | struct proc_dir_entry *ent; | |
1257 | struct proc_dir_entry *mf; | |
1258 | char name[2]; | |
1259 | int i; | |
1260 | ||
d9523aa1 SR |
1261 | if (!firmware_has_feature(FW_FEATURE_ISERIES)) |
1262 | return 0; | |
1263 | ||
1da177e4 LT |
1264 | mf_proc_root = proc_mkdir("iSeries/mf", NULL); |
1265 | if (!mf_proc_root) | |
1266 | return 1; | |
1267 | ||
1268 | name[1] = '\0'; | |
1269 | for (i = 0; i < 4; i++) { | |
1270 | name[0] = 'A' + i; | |
1271 | mf = proc_mkdir(name, mf_proc_root); | |
1272 | if (!mf) | |
1273 | return 1; | |
1274 | ||
5c916a29 AD |
1275 | ent = proc_create_data("cmdline", S_IRUSR|S_IWUSR, mf, |
1276 | &mf_cmdline_proc_fops, (void *)(long)i); | |
1da177e4 LT |
1277 | if (!ent) |
1278 | return 1; | |
1da177e4 LT |
1279 | |
1280 | if (i == 3) /* no vmlinux entry for 'D' */ | |
1281 | continue; | |
1282 | ||
66747138 DL |
1283 | ent = proc_create_data("vmlinux", S_IFREG|S_IWUSR, mf, |
1284 | &proc_vmlinux_operations, | |
1285 | (void *)(long)i); | |
1da177e4 LT |
1286 | if (!ent) |
1287 | return 1; | |
1da177e4 LT |
1288 | } |
1289 | ||
5c916a29 AD |
1290 | ent = proc_create("side", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root, |
1291 | &mf_side_proc_fops); | |
1da177e4 LT |
1292 | if (!ent) |
1293 | return 1; | |
1da177e4 | 1294 | |
5c916a29 AD |
1295 | ent = proc_create("src", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root, |
1296 | &mf_src_proc_fops); | |
1da177e4 LT |
1297 | if (!ent) |
1298 | return 1; | |
1da177e4 LT |
1299 | |
1300 | return 0; | |
1301 | } | |
1302 | ||
1303 | __initcall(mf_proc_init); | |
1304 | ||
1305 | #endif /* CONFIG_PROC_FS */ | |
c8b84976 SR |
1306 | |
1307 | /* | |
1308 | * Get the RTC from the virtual service processor | |
1309 | * This requires flowing LpEvents to the primary partition | |
1310 | */ | |
1311 | void iSeries_get_rtc_time(struct rtc_time *rtc_tm) | |
1312 | { | |
c8b84976 SR |
1313 | mf_get_rtc(rtc_tm); |
1314 | rtc_tm->tm_mon--; | |
1315 | } | |
1316 | ||
1317 | /* | |
1318 | * Set the RTC in the virtual service processor | |
1319 | * This requires flowing LpEvents to the primary partition | |
1320 | */ | |
1321 | int iSeries_set_rtc_time(struct rtc_time *tm) | |
1322 | { | |
1323 | mf_set_rtc(tm); | |
1324 | return 0; | |
1325 | } | |
1326 | ||
143a1dec | 1327 | unsigned long iSeries_get_boot_time(void) |
c8b84976 | 1328 | { |
143a1dec PM |
1329 | struct rtc_time tm; |
1330 | ||
143a1dec PM |
1331 | mf_get_boot_rtc(&tm); |
1332 | return mktime(tm.tm_year + 1900, tm.tm_mon, tm.tm_mday, | |
1333 | tm.tm_hour, tm.tm_min, tm.tm_sec); | |
c8b84976 | 1334 | } |