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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> | |
22ae782f | 33 | #include <linux/proc_fs.h> |
1da177e4 LT |
34 | #include <linux/dma-mapping.h> |
35 | #include <linux/bcd.h> | |
143a1dec | 36 | #include <linux/rtc.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
1da177e4 LT |
38 | |
39 | #include <asm/time.h> | |
40 | #include <asm/uaccess.h> | |
d0e8e291 | 41 | #include <asm/paca.h> |
426c1a11 | 42 | #include <asm/abs_addr.h> |
d9523aa1 | 43 | #include <asm/firmware.h> |
bbc8b628 | 44 | #include <asm/iseries/mf.h> |
15b17189 | 45 | #include <asm/iseries/hv_lp_config.h> |
1670b2b2 | 46 | #include <asm/iseries/hv_lp_event.h> |
8875ccfb | 47 | #include <asm/iseries/it_lp_queue.h> |
1da177e4 | 48 | |
c8b84976 SR |
49 | #include "setup.h" |
50 | ||
260de22f | 51 | static int mf_initialized; |
c8b84976 | 52 | |
1da177e4 LT |
53 | /* |
54 | * This is the structure layout for the Machine Facilites LPAR event | |
55 | * flows. | |
56 | */ | |
57 | struct vsp_cmd_data { | |
58 | u64 token; | |
59 | u16 cmd; | |
60 | HvLpIndex lp_index; | |
61 | u8 result_code; | |
62 | u32 reserved; | |
63 | union { | |
64 | u64 state; /* GetStateOut */ | |
65 | u64 ipl_type; /* GetIplTypeOut, Function02SelectIplTypeIn */ | |
66 | u64 ipl_mode; /* GetIplModeOut, Function02SelectIplModeIn */ | |
67 | u64 page[4]; /* GetSrcHistoryIn */ | |
68 | u64 flag; /* GetAutoIplWhenPrimaryIplsOut, | |
69 | SetAutoIplWhenPrimaryIplsIn, | |
70 | WhiteButtonPowerOffIn, | |
71 | Function08FastPowerOffIn, | |
72 | IsSpcnRackPowerIncompleteOut */ | |
73 | struct { | |
74 | u64 token; | |
75 | u64 address_type; | |
76 | u64 side; | |
77 | u32 length; | |
78 | u32 offset; | |
79 | } kern; /* SetKernelImageIn, GetKernelImageIn, | |
80 | SetKernelCmdLineIn, GetKernelCmdLineIn */ | |
81 | u32 length_out; /* GetKernelImageOut, GetKernelCmdLineOut */ | |
82 | u8 reserved[80]; | |
83 | } sub_data; | |
84 | }; | |
85 | ||
86 | struct vsp_rsp_data { | |
87 | struct completion com; | |
88 | struct vsp_cmd_data *response; | |
89 | }; | |
90 | ||
91 | struct alloc_data { | |
92 | u16 size; | |
93 | u16 type; | |
94 | u32 count; | |
95 | u16 reserved1; | |
96 | u8 reserved2; | |
97 | HvLpIndex target_lp; | |
98 | }; | |
99 | ||
100 | struct ce_msg_data; | |
101 | ||
102 | typedef void (*ce_msg_comp_hdlr)(void *token, struct ce_msg_data *vsp_cmd_rsp); | |
103 | ||
104 | struct ce_msg_comp_data { | |
105 | ce_msg_comp_hdlr handler; | |
106 | void *token; | |
107 | }; | |
108 | ||
109 | struct ce_msg_data { | |
110 | u8 ce_msg[12]; | |
111 | char reserved[4]; | |
112 | struct ce_msg_comp_data *completion; | |
113 | }; | |
114 | ||
115 | struct io_mf_lp_event { | |
116 | struct HvLpEvent hp_lp_event; | |
117 | u16 subtype_result_code; | |
118 | u16 reserved1; | |
119 | u32 reserved2; | |
120 | union { | |
121 | struct alloc_data alloc; | |
122 | struct ce_msg_data ce_msg; | |
123 | struct vsp_cmd_data vsp_cmd; | |
124 | } data; | |
125 | }; | |
126 | ||
127 | #define subtype_data(a, b, c, d) \ | |
128 | (((a) << 24) + ((b) << 16) + ((c) << 8) + (d)) | |
129 | ||
130 | /* | |
131 | * All outgoing event traffic is kept on a FIFO queue. The first | |
132 | * pointer points to the one that is outstanding, and all new | |
133 | * requests get stuck on the end. Also, we keep a certain number of | |
134 | * preallocated pending events so that we can operate very early in | |
135 | * the boot up sequence (before kmalloc is ready). | |
136 | */ | |
137 | struct pending_event { | |
138 | struct pending_event *next; | |
139 | struct io_mf_lp_event event; | |
140 | MFCompleteHandler hdlr; | |
141 | char dma_data[72]; | |
142 | unsigned dma_data_length; | |
143 | unsigned remote_address; | |
144 | }; | |
145 | static spinlock_t pending_event_spinlock; | |
146 | static struct pending_event *pending_event_head; | |
147 | static struct pending_event *pending_event_tail; | |
148 | static struct pending_event *pending_event_avail; | |
260de22f ME |
149 | #define PENDING_EVENT_PREALLOC_LEN 16 |
150 | static struct pending_event pending_event_prealloc[PENDING_EVENT_PREALLOC_LEN]; | |
1da177e4 LT |
151 | |
152 | /* | |
153 | * Put a pending event onto the available queue, so it can get reused. | |
154 | * Attention! You must have the pending_event_spinlock before calling! | |
155 | */ | |
156 | static void free_pending_event(struct pending_event *ev) | |
157 | { | |
158 | if (ev != NULL) { | |
159 | ev->next = pending_event_avail; | |
160 | pending_event_avail = ev; | |
161 | } | |
162 | } | |
163 | ||
164 | /* | |
165 | * Enqueue the outbound event onto the stack. If the queue was | |
166 | * empty to begin with, we must also issue it via the Hypervisor | |
167 | * interface. There is a section of code below that will touch | |
168 | * the first stack pointer without the protection of the pending_event_spinlock. | |
169 | * This is OK, because we know that nobody else will be modifying | |
170 | * the first pointer when we do this. | |
171 | */ | |
172 | static int signal_event(struct pending_event *ev) | |
173 | { | |
174 | int rc = 0; | |
175 | unsigned long flags; | |
176 | int go = 1; | |
177 | struct pending_event *ev1; | |
178 | HvLpEvent_Rc hv_rc; | |
179 | ||
180 | /* enqueue the event */ | |
181 | if (ev != NULL) { | |
182 | ev->next = NULL; | |
183 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
184 | if (pending_event_head == NULL) | |
185 | pending_event_head = ev; | |
186 | else { | |
187 | go = 0; | |
188 | pending_event_tail->next = ev; | |
189 | } | |
190 | pending_event_tail = ev; | |
191 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
192 | } | |
193 | ||
194 | /* send the event */ | |
195 | while (go) { | |
196 | go = 0; | |
197 | ||
198 | /* any DMA data to send beforehand? */ | |
199 | if (pending_event_head->dma_data_length > 0) | |
200 | HvCallEvent_dmaToSp(pending_event_head->dma_data, | |
201 | pending_event_head->remote_address, | |
202 | pending_event_head->dma_data_length, | |
203 | HvLpDma_Direction_LocalToRemote); | |
204 | ||
205 | hv_rc = HvCallEvent_signalLpEvent( | |
206 | &pending_event_head->event.hp_lp_event); | |
207 | if (hv_rc != HvLpEvent_Rc_Good) { | |
208 | printk(KERN_ERR "mf.c: HvCallEvent_signalLpEvent() " | |
209 | "failed with %d\n", (int)hv_rc); | |
210 | ||
211 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
212 | ev1 = pending_event_head; | |
213 | pending_event_head = pending_event_head->next; | |
214 | if (pending_event_head != NULL) | |
215 | go = 1; | |
216 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
217 | ||
218 | if (ev1 == ev) | |
219 | rc = -EIO; | |
220 | else if (ev1->hdlr != NULL) | |
221 | (*ev1->hdlr)((void *)ev1->event.hp_lp_event.xCorrelationToken, -EIO); | |
222 | ||
223 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
224 | free_pending_event(ev1); | |
225 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
226 | } | |
227 | } | |
228 | ||
229 | return rc; | |
230 | } | |
231 | ||
232 | /* | |
233 | * Allocate a new pending_event structure, and initialize it. | |
234 | */ | |
235 | static struct pending_event *new_pending_event(void) | |
236 | { | |
237 | struct pending_event *ev = NULL; | |
238 | HvLpIndex primary_lp = HvLpConfig_getPrimaryLpIndex(); | |
239 | unsigned long flags; | |
240 | struct HvLpEvent *hev; | |
241 | ||
242 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
243 | if (pending_event_avail != NULL) { | |
244 | ev = pending_event_avail; | |
245 | pending_event_avail = pending_event_avail->next; | |
246 | } | |
247 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
248 | if (ev == NULL) { | |
249 | ev = kmalloc(sizeof(struct pending_event), GFP_ATOMIC); | |
250 | if (ev == NULL) { | |
251 | printk(KERN_ERR "mf.c: unable to kmalloc %ld bytes\n", | |
252 | sizeof(struct pending_event)); | |
253 | return NULL; | |
254 | } | |
255 | } | |
256 | memset(ev, 0, sizeof(struct pending_event)); | |
257 | hev = &ev->event.hp_lp_event; | |
677f8c0d | 258 | hev->flags = HV_LP_EVENT_VALID | HV_LP_EVENT_DO_ACK | HV_LP_EVENT_INT; |
1da177e4 LT |
259 | hev->xType = HvLpEvent_Type_MachineFac; |
260 | hev->xSourceLp = HvLpConfig_getLpIndex(); | |
261 | hev->xTargetLp = primary_lp; | |
262 | hev->xSizeMinus1 = sizeof(ev->event) - 1; | |
263 | hev->xRc = HvLpEvent_Rc_Good; | |
264 | hev->xSourceInstanceId = HvCallEvent_getSourceLpInstanceId(primary_lp, | |
265 | HvLpEvent_Type_MachineFac); | |
266 | hev->xTargetInstanceId = HvCallEvent_getTargetLpInstanceId(primary_lp, | |
267 | HvLpEvent_Type_MachineFac); | |
268 | ||
269 | return ev; | |
270 | } | |
271 | ||
e8d1673b ME |
272 | static int __maybe_unused |
273 | signal_vsp_instruction(struct vsp_cmd_data *vsp_cmd) | |
1da177e4 LT |
274 | { |
275 | struct pending_event *ev = new_pending_event(); | |
276 | int rc; | |
277 | struct vsp_rsp_data response; | |
278 | ||
279 | if (ev == NULL) | |
280 | return -ENOMEM; | |
281 | ||
282 | init_completion(&response.com); | |
283 | response.response = vsp_cmd; | |
284 | ev->event.hp_lp_event.xSubtype = 6; | |
285 | ev->event.hp_lp_event.x.xSubtypeData = | |
286 | subtype_data('M', 'F', 'V', 'I'); | |
287 | ev->event.data.vsp_cmd.token = (u64)&response; | |
288 | ev->event.data.vsp_cmd.cmd = vsp_cmd->cmd; | |
289 | ev->event.data.vsp_cmd.lp_index = HvLpConfig_getLpIndex(); | |
290 | ev->event.data.vsp_cmd.result_code = 0xFF; | |
291 | ev->event.data.vsp_cmd.reserved = 0; | |
292 | memcpy(&(ev->event.data.vsp_cmd.sub_data), | |
293 | &(vsp_cmd->sub_data), sizeof(vsp_cmd->sub_data)); | |
294 | mb(); | |
295 | ||
296 | rc = signal_event(ev); | |
297 | if (rc == 0) | |
298 | wait_for_completion(&response.com); | |
299 | return rc; | |
300 | } | |
301 | ||
302 | ||
303 | /* | |
304 | * Send a 12-byte CE message to the primary partition VSP object | |
305 | */ | |
306 | static int signal_ce_msg(char *ce_msg, struct ce_msg_comp_data *completion) | |
307 | { | |
308 | struct pending_event *ev = new_pending_event(); | |
309 | ||
310 | if (ev == NULL) | |
311 | return -ENOMEM; | |
312 | ||
313 | ev->event.hp_lp_event.xSubtype = 0; | |
314 | ev->event.hp_lp_event.x.xSubtypeData = | |
315 | subtype_data('M', 'F', 'C', 'E'); | |
316 | memcpy(ev->event.data.ce_msg.ce_msg, ce_msg, 12); | |
317 | ev->event.data.ce_msg.completion = completion; | |
318 | return signal_event(ev); | |
319 | } | |
320 | ||
321 | /* | |
322 | * Send a 12-byte CE message (with no data) to the primary partition VSP object | |
323 | */ | |
324 | static int signal_ce_msg_simple(u8 ce_op, struct ce_msg_comp_data *completion) | |
325 | { | |
326 | u8 ce_msg[12]; | |
327 | ||
328 | memset(ce_msg, 0, sizeof(ce_msg)); | |
329 | ce_msg[3] = ce_op; | |
330 | return signal_ce_msg(ce_msg, completion); | |
331 | } | |
332 | ||
333 | /* | |
334 | * Send a 12-byte CE message and DMA data to the primary partition VSP object | |
335 | */ | |
336 | static int dma_and_signal_ce_msg(char *ce_msg, | |
337 | struct ce_msg_comp_data *completion, void *dma_data, | |
338 | unsigned dma_data_length, unsigned remote_address) | |
339 | { | |
340 | struct pending_event *ev = new_pending_event(); | |
341 | ||
342 | if (ev == NULL) | |
343 | return -ENOMEM; | |
344 | ||
345 | ev->event.hp_lp_event.xSubtype = 0; | |
346 | ev->event.hp_lp_event.x.xSubtypeData = | |
347 | subtype_data('M', 'F', 'C', 'E'); | |
348 | memcpy(ev->event.data.ce_msg.ce_msg, ce_msg, 12); | |
349 | ev->event.data.ce_msg.completion = completion; | |
350 | memcpy(ev->dma_data, dma_data, dma_data_length); | |
351 | ev->dma_data_length = dma_data_length; | |
352 | ev->remote_address = remote_address; | |
353 | return signal_event(ev); | |
354 | } | |
355 | ||
356 | /* | |
357 | * Initiate a nice (hopefully) shutdown of Linux. We simply are | |
358 | * going to try and send the init process a SIGINT signal. If | |
359 | * this fails (why?), we'll simply force it off in a not-so-nice | |
360 | * manner. | |
361 | */ | |
362 | static int shutdown(void) | |
363 | { | |
9ec52099 | 364 | int rc = kill_cad_pid(SIGINT, 1); |
1da177e4 LT |
365 | |
366 | if (rc) { | |
367 | printk(KERN_ALERT "mf.c: SIGINT to init failed (%d), " | |
368 | "hard shutdown commencing\n", rc); | |
369 | mf_power_off(); | |
370 | } else | |
371 | printk(KERN_INFO "mf.c: init has been successfully notified " | |
372 | "to proceed with shutdown\n"); | |
373 | return rc; | |
374 | } | |
375 | ||
376 | /* | |
377 | * The primary partition VSP object is sending us a new | |
378 | * event flow. Handle it... | |
379 | */ | |
380 | static void handle_int(struct io_mf_lp_event *event) | |
381 | { | |
382 | struct ce_msg_data *ce_msg_data; | |
383 | struct ce_msg_data *pce_msg_data; | |
384 | unsigned long flags; | |
385 | struct pending_event *pev; | |
386 | ||
387 | /* ack the interrupt */ | |
388 | event->hp_lp_event.xRc = HvLpEvent_Rc_Good; | |
389 | HvCallEvent_ackLpEvent(&event->hp_lp_event); | |
390 | ||
391 | /* process interrupt */ | |
392 | switch (event->hp_lp_event.xSubtype) { | |
393 | case 0: /* CE message */ | |
394 | ce_msg_data = &event->data.ce_msg; | |
395 | switch (ce_msg_data->ce_msg[3]) { | |
396 | case 0x5B: /* power control notification */ | |
397 | if ((ce_msg_data->ce_msg[5] & 0x20) != 0) { | |
398 | printk(KERN_INFO "mf.c: Commencing partition shutdown\n"); | |
399 | if (shutdown() == 0) | |
400 | signal_ce_msg_simple(0xDB, NULL); | |
401 | } | |
402 | break; | |
403 | case 0xC0: /* get time */ | |
404 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
405 | pev = pending_event_head; | |
406 | if (pev != NULL) | |
407 | pending_event_head = pending_event_head->next; | |
408 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
409 | if (pev == NULL) | |
410 | break; | |
411 | pce_msg_data = &pev->event.data.ce_msg; | |
412 | if (pce_msg_data->ce_msg[3] != 0x40) | |
413 | break; | |
414 | if (pce_msg_data->completion != NULL) { | |
415 | ce_msg_comp_hdlr handler = | |
416 | pce_msg_data->completion->handler; | |
417 | void *token = pce_msg_data->completion->token; | |
418 | ||
419 | if (handler != NULL) | |
420 | (*handler)(token, ce_msg_data); | |
421 | } | |
422 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
423 | free_pending_event(pev); | |
424 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
425 | /* send next waiting event */ | |
426 | if (pending_event_head != NULL) | |
427 | signal_event(NULL); | |
428 | break; | |
429 | } | |
430 | break; | |
431 | case 1: /* IT sys shutdown */ | |
432 | printk(KERN_INFO "mf.c: Commencing system shutdown\n"); | |
433 | shutdown(); | |
434 | break; | |
435 | } | |
436 | } | |
437 | ||
438 | /* | |
439 | * The primary partition VSP object is acknowledging the receipt | |
440 | * of a flow we sent to them. If there are other flows queued | |
441 | * up, we must send another one now... | |
442 | */ | |
443 | static void handle_ack(struct io_mf_lp_event *event) | |
444 | { | |
445 | unsigned long flags; | |
446 | struct pending_event *two = NULL; | |
447 | unsigned long free_it = 0; | |
448 | struct ce_msg_data *ce_msg_data; | |
449 | struct ce_msg_data *pce_msg_data; | |
450 | struct vsp_rsp_data *rsp; | |
451 | ||
452 | /* handle current event */ | |
453 | if (pending_event_head == NULL) { | |
454 | printk(KERN_ERR "mf.c: stack empty for receiving ack\n"); | |
455 | return; | |
456 | } | |
457 | ||
458 | switch (event->hp_lp_event.xSubtype) { | |
459 | case 0: /* CE msg */ | |
460 | ce_msg_data = &event->data.ce_msg; | |
461 | if (ce_msg_data->ce_msg[3] != 0x40) { | |
462 | free_it = 1; | |
463 | break; | |
464 | } | |
465 | if (ce_msg_data->ce_msg[2] == 0) | |
466 | break; | |
467 | free_it = 1; | |
468 | pce_msg_data = &pending_event_head->event.data.ce_msg; | |
469 | if (pce_msg_data->completion != NULL) { | |
470 | ce_msg_comp_hdlr handler = | |
471 | pce_msg_data->completion->handler; | |
472 | void *token = pce_msg_data->completion->token; | |
473 | ||
474 | if (handler != NULL) | |
475 | (*handler)(token, ce_msg_data); | |
476 | } | |
477 | break; | |
478 | case 4: /* allocate */ | |
479 | case 5: /* deallocate */ | |
480 | if (pending_event_head->hdlr != NULL) | |
481 | (*pending_event_head->hdlr)((void *)event->hp_lp_event.xCorrelationToken, event->data.alloc.count); | |
482 | free_it = 1; | |
483 | break; | |
484 | case 6: | |
485 | free_it = 1; | |
486 | rsp = (struct vsp_rsp_data *)event->data.vsp_cmd.token; | |
487 | if (rsp == NULL) { | |
488 | printk(KERN_ERR "mf.c: no rsp\n"); | |
489 | break; | |
490 | } | |
491 | if (rsp->response != NULL) | |
492 | memcpy(rsp->response, &event->data.vsp_cmd, | |
493 | sizeof(event->data.vsp_cmd)); | |
494 | complete(&rsp->com); | |
495 | break; | |
496 | } | |
497 | ||
498 | /* remove from queue */ | |
499 | spin_lock_irqsave(&pending_event_spinlock, flags); | |
500 | if ((pending_event_head != NULL) && (free_it == 1)) { | |
501 | struct pending_event *oldHead = pending_event_head; | |
502 | ||
503 | pending_event_head = pending_event_head->next; | |
504 | two = pending_event_head; | |
505 | free_pending_event(oldHead); | |
506 | } | |
507 | spin_unlock_irqrestore(&pending_event_spinlock, flags); | |
508 | ||
509 | /* send next waiting event */ | |
510 | if (two != NULL) | |
511 | signal_event(NULL); | |
512 | } | |
513 | ||
514 | /* | |
515 | * This is the generic event handler we are registering with | |
516 | * the Hypervisor. Ensure the flows are for us, and then | |
517 | * parse it enough to know if it is an interrupt or an | |
518 | * acknowledge. | |
519 | */ | |
35a84c2f | 520 | static void hv_handler(struct HvLpEvent *event) |
1da177e4 LT |
521 | { |
522 | if ((event != NULL) && (event->xType == HvLpEvent_Type_MachineFac)) { | |
677f8c0d | 523 | if (hvlpevent_is_ack(event)) |
1da177e4 | 524 | handle_ack((struct io_mf_lp_event *)event); |
677f8c0d | 525 | else |
1da177e4 | 526 | handle_int((struct io_mf_lp_event *)event); |
1da177e4 LT |
527 | } else |
528 | printk(KERN_ERR "mf.c: alien event received\n"); | |
529 | } | |
530 | ||
531 | /* | |
532 | * Global kernel interface to allocate and seed events into the | |
533 | * Hypervisor. | |
534 | */ | |
535 | void mf_allocate_lp_events(HvLpIndex target_lp, HvLpEvent_Type type, | |
536 | unsigned size, unsigned count, MFCompleteHandler hdlr, | |
537 | void *user_token) | |
538 | { | |
539 | struct pending_event *ev = new_pending_event(); | |
540 | int rc; | |
541 | ||
542 | if (ev == NULL) { | |
543 | rc = -ENOMEM; | |
544 | } else { | |
545 | ev->event.hp_lp_event.xSubtype = 4; | |
546 | ev->event.hp_lp_event.xCorrelationToken = (u64)user_token; | |
547 | ev->event.hp_lp_event.x.xSubtypeData = | |
548 | subtype_data('M', 'F', 'M', 'A'); | |
549 | ev->event.data.alloc.target_lp = target_lp; | |
550 | ev->event.data.alloc.type = type; | |
551 | ev->event.data.alloc.size = size; | |
552 | ev->event.data.alloc.count = count; | |
553 | ev->hdlr = hdlr; | |
554 | rc = signal_event(ev); | |
555 | } | |
556 | if ((rc != 0) && (hdlr != NULL)) | |
557 | (*hdlr)(user_token, rc); | |
558 | } | |
559 | EXPORT_SYMBOL(mf_allocate_lp_events); | |
560 | ||
561 | /* | |
562 | * Global kernel interface to unseed and deallocate events already in | |
563 | * Hypervisor. | |
564 | */ | |
565 | void mf_deallocate_lp_events(HvLpIndex target_lp, HvLpEvent_Type type, | |
566 | unsigned count, MFCompleteHandler hdlr, void *user_token) | |
567 | { | |
568 | struct pending_event *ev = new_pending_event(); | |
569 | int rc; | |
570 | ||
571 | if (ev == NULL) | |
572 | rc = -ENOMEM; | |
573 | else { | |
574 | ev->event.hp_lp_event.xSubtype = 5; | |
575 | ev->event.hp_lp_event.xCorrelationToken = (u64)user_token; | |
576 | ev->event.hp_lp_event.x.xSubtypeData = | |
577 | subtype_data('M', 'F', 'M', 'D'); | |
578 | ev->event.data.alloc.target_lp = target_lp; | |
579 | ev->event.data.alloc.type = type; | |
580 | ev->event.data.alloc.count = count; | |
581 | ev->hdlr = hdlr; | |
582 | rc = signal_event(ev); | |
583 | } | |
584 | if ((rc != 0) && (hdlr != NULL)) | |
585 | (*hdlr)(user_token, rc); | |
586 | } | |
587 | EXPORT_SYMBOL(mf_deallocate_lp_events); | |
588 | ||
589 | /* | |
590 | * Global kernel interface to tell the VSP object in the primary | |
591 | * partition to power this partition off. | |
592 | */ | |
593 | void mf_power_off(void) | |
594 | { | |
595 | printk(KERN_INFO "mf.c: Down it goes...\n"); | |
596 | signal_ce_msg_simple(0x4d, NULL); | |
597 | for (;;) | |
598 | ; | |
599 | } | |
600 | ||
601 | /* | |
602 | * Global kernel interface to tell the VSP object in the primary | |
603 | * partition to reboot this partition. | |
604 | */ | |
a9ea2101 | 605 | void mf_reboot(char *cmd) |
1da177e4 LT |
606 | { |
607 | printk(KERN_INFO "mf.c: Preparing to bounce...\n"); | |
608 | signal_ce_msg_simple(0x4e, NULL); | |
609 | for (;;) | |
610 | ; | |
611 | } | |
612 | ||
613 | /* | |
614 | * Display a single word SRC onto the VSP control panel. | |
615 | */ | |
616 | void mf_display_src(u32 word) | |
617 | { | |
618 | u8 ce[12]; | |
619 | ||
620 | memset(ce, 0, sizeof(ce)); | |
621 | ce[3] = 0x4a; | |
622 | ce[7] = 0x01; | |
623 | ce[8] = word >> 24; | |
624 | ce[9] = word >> 16; | |
625 | ce[10] = word >> 8; | |
626 | ce[11] = word; | |
627 | signal_ce_msg(ce, NULL); | |
628 | } | |
629 | ||
630 | /* | |
631 | * Display a single word SRC of the form "PROGXXXX" on the VSP control panel. | |
632 | */ | |
260de22f | 633 | static __init void mf_display_progress_src(u16 value) |
1da177e4 LT |
634 | { |
635 | u8 ce[12]; | |
636 | u8 src[72]; | |
637 | ||
638 | memcpy(ce, "\x00\x00\x04\x4A\x00\x00\x00\x48\x00\x00\x00\x00", 12); | |
639 | memcpy(src, "\x01\x00\x00\x01\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\x00\x00\x00\x00\x00\x00\x00\x00\x00" | |
642 | "\x00\x00\x00\x00PROGxxxx ", | |
643 | 72); | |
644 | src[6] = value >> 8; | |
645 | src[7] = value & 255; | |
646 | src[44] = "0123456789ABCDEF"[(value >> 12) & 15]; | |
647 | src[45] = "0123456789ABCDEF"[(value >> 8) & 15]; | |
648 | src[46] = "0123456789ABCDEF"[(value >> 4) & 15]; | |
649 | src[47] = "0123456789ABCDEF"[value & 15]; | |
650 | dma_and_signal_ce_msg(ce, NULL, src, sizeof(src), 9 * 64 * 1024); | |
651 | } | |
652 | ||
653 | /* | |
654 | * Clear the VSP control panel. Used to "erase" an SRC that was | |
655 | * previously displayed. | |
656 | */ | |
260de22f | 657 | static void mf_clear_src(void) |
1da177e4 LT |
658 | { |
659 | signal_ce_msg_simple(0x4b, NULL); | |
660 | } | |
661 | ||
260de22f ME |
662 | void __init mf_display_progress(u16 value) |
663 | { | |
4bd174fe | 664 | if (!mf_initialized) |
260de22f ME |
665 | return; |
666 | ||
667 | if (0xFFFF == value) | |
668 | mf_clear_src(); | |
669 | else | |
670 | mf_display_progress_src(value); | |
671 | } | |
672 | ||
1da177e4 LT |
673 | /* |
674 | * Initialization code here. | |
675 | */ | |
260de22f | 676 | void __init mf_init(void) |
1da177e4 LT |
677 | { |
678 | int i; | |
679 | ||
1da177e4 | 680 | spin_lock_init(&pending_event_spinlock); |
260de22f ME |
681 | |
682 | for (i = 0; i < PENDING_EVENT_PREALLOC_LEN; i++) | |
1da177e4 | 683 | free_pending_event(&pending_event_prealloc[i]); |
260de22f | 684 | |
1da177e4 LT |
685 | HvLpEvent_registerHandler(HvLpEvent_Type_MachineFac, &hv_handler); |
686 | ||
687 | /* virtual continue ack */ | |
688 | signal_ce_msg_simple(0x57, NULL); | |
689 | ||
260de22f ME |
690 | mf_initialized = 1; |
691 | mb(); | |
692 | ||
1da177e4 LT |
693 | printk(KERN_NOTICE "mf.c: iSeries Linux LPAR Machine Facilities " |
694 | "initialized\n"); | |
695 | } | |
696 | ||
697 | struct rtc_time_data { | |
698 | struct completion com; | |
699 | struct ce_msg_data ce_msg; | |
700 | int rc; | |
701 | }; | |
702 | ||
703 | static void get_rtc_time_complete(void *token, struct ce_msg_data *ce_msg) | |
704 | { | |
705 | struct rtc_time_data *rtc = token; | |
706 | ||
707 | memcpy(&rtc->ce_msg, ce_msg, sizeof(rtc->ce_msg)); | |
708 | rtc->rc = 0; | |
709 | complete(&rtc->com); | |
710 | } | |
711 | ||
00611c5c ME |
712 | static int mf_set_rtc(struct rtc_time *tm) |
713 | { | |
714 | char ce_time[12]; | |
715 | u8 day, mon, hour, min, sec, y1, y2; | |
716 | unsigned year; | |
717 | ||
718 | year = 1900 + tm->tm_year; | |
719 | y1 = year / 100; | |
720 | y2 = year % 100; | |
721 | ||
722 | sec = tm->tm_sec; | |
723 | min = tm->tm_min; | |
724 | hour = tm->tm_hour; | |
725 | day = tm->tm_mday; | |
726 | mon = tm->tm_mon + 1; | |
727 | ||
8f6ba492 AB |
728 | sec = bin2bcd(sec); |
729 | min = bin2bcd(min); | |
730 | hour = bin2bcd(hour); | |
731 | mon = bin2bcd(mon); | |
732 | day = bin2bcd(day); | |
733 | y1 = bin2bcd(y1); | |
734 | y2 = bin2bcd(y2); | |
00611c5c ME |
735 | |
736 | memset(ce_time, 0, sizeof(ce_time)); | |
737 | ce_time[3] = 0x41; | |
738 | ce_time[4] = y1; | |
739 | ce_time[5] = y2; | |
740 | ce_time[6] = sec; | |
741 | ce_time[7] = min; | |
742 | ce_time[8] = hour; | |
743 | ce_time[10] = day; | |
744 | ce_time[11] = mon; | |
745 | ||
746 | return signal_ce_msg(ce_time, NULL); | |
747 | } | |
748 | ||
d0e8e291 | 749 | static int rtc_set_tm(int rc, u8 *ce_msg, struct rtc_time *tm) |
1da177e4 | 750 | { |
1da177e4 LT |
751 | tm->tm_wday = 0; |
752 | tm->tm_yday = 0; | |
753 | tm->tm_isdst = 0; | |
d0e8e291 | 754 | if (rc) { |
1da177e4 LT |
755 | tm->tm_sec = 0; |
756 | tm->tm_min = 0; | |
757 | tm->tm_hour = 0; | |
758 | tm->tm_mday = 15; | |
759 | tm->tm_mon = 5; | |
760 | tm->tm_year = 52; | |
d0e8e291 | 761 | return rc; |
1da177e4 LT |
762 | } |
763 | ||
d0e8e291 SR |
764 | if ((ce_msg[2] == 0xa9) || |
765 | (ce_msg[2] == 0xaf)) { | |
1da177e4 LT |
766 | /* TOD clock is not set */ |
767 | tm->tm_sec = 1; | |
768 | tm->tm_min = 1; | |
769 | tm->tm_hour = 1; | |
770 | tm->tm_mday = 10; | |
771 | tm->tm_mon = 8; | |
772 | tm->tm_year = 71; | |
773 | mf_set_rtc(tm); | |
774 | } | |
775 | { | |
1da177e4 LT |
776 | u8 year = ce_msg[5]; |
777 | u8 sec = ce_msg[6]; | |
778 | u8 min = ce_msg[7]; | |
779 | u8 hour = ce_msg[8]; | |
780 | u8 day = ce_msg[10]; | |
781 | u8 mon = ce_msg[11]; | |
782 | ||
8f6ba492 AB |
783 | sec = bcd2bin(sec); |
784 | min = bcd2bin(min); | |
785 | hour = bcd2bin(hour); | |
786 | day = bcd2bin(day); | |
787 | mon = bcd2bin(mon); | |
788 | year = bcd2bin(year); | |
1da177e4 LT |
789 | |
790 | if (year <= 69) | |
791 | year += 100; | |
792 | ||
793 | tm->tm_sec = sec; | |
794 | tm->tm_min = min; | |
795 | tm->tm_hour = hour; | |
796 | tm->tm_mday = day; | |
797 | tm->tm_mon = mon; | |
798 | tm->tm_year = year; | |
799 | } | |
800 | ||
801 | return 0; | |
802 | } | |
d0e8e291 | 803 | |
00611c5c | 804 | static int mf_get_rtc(struct rtc_time *tm) |
d0e8e291 SR |
805 | { |
806 | struct ce_msg_comp_data ce_complete; | |
807 | struct rtc_time_data rtc_data; | |
808 | int rc; | |
809 | ||
810 | memset(&ce_complete, 0, sizeof(ce_complete)); | |
811 | memset(&rtc_data, 0, sizeof(rtc_data)); | |
812 | init_completion(&rtc_data.com); | |
813 | ce_complete.handler = &get_rtc_time_complete; | |
814 | ce_complete.token = &rtc_data; | |
815 | rc = signal_ce_msg_simple(0x40, &ce_complete); | |
816 | if (rc) | |
817 | return rc; | |
818 | wait_for_completion(&rtc_data.com); | |
819 | return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm); | |
820 | } | |
821 | ||
822 | struct boot_rtc_time_data { | |
823 | int busy; | |
824 | struct ce_msg_data ce_msg; | |
825 | int rc; | |
826 | }; | |
827 | ||
828 | static void get_boot_rtc_time_complete(void *token, struct ce_msg_data *ce_msg) | |
829 | { | |
830 | struct boot_rtc_time_data *rtc = token; | |
831 | ||
832 | memcpy(&rtc->ce_msg, ce_msg, sizeof(rtc->ce_msg)); | |
833 | rtc->rc = 0; | |
834 | rtc->busy = 0; | |
835 | } | |
836 | ||
00611c5c | 837 | static int mf_get_boot_rtc(struct rtc_time *tm) |
d0e8e291 SR |
838 | { |
839 | struct ce_msg_comp_data ce_complete; | |
840 | struct boot_rtc_time_data rtc_data; | |
841 | int rc; | |
842 | ||
843 | memset(&ce_complete, 0, sizeof(ce_complete)); | |
844 | memset(&rtc_data, 0, sizeof(rtc_data)); | |
845 | rtc_data.busy = 1; | |
846 | ce_complete.handler = &get_boot_rtc_time_complete; | |
847 | ce_complete.token = &rtc_data; | |
848 | rc = signal_ce_msg_simple(0x40, &ce_complete); | |
849 | if (rc) | |
850 | return rc; | |
851 | /* We need to poll here as we are not yet taking interrupts */ | |
852 | while (rtc_data.busy) { | |
937b31b1 | 853 | if (hvlpevent_is_pending()) |
35a84c2f | 854 | process_hvlpevents(); |
d0e8e291 SR |
855 | } |
856 | return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm); | |
857 | } | |
1da177e4 | 858 | |
1da177e4 | 859 | #ifdef CONFIG_PROC_FS |
5c916a29 | 860 | static int mf_cmdline_proc_show(struct seq_file *m, void *v) |
1da177e4 | 861 | { |
5c916a29 | 862 | char *page, *p; |
1da177e4 LT |
863 | struct vsp_cmd_data vsp_cmd; |
864 | int rc; | |
865 | dma_addr_t dma_addr; | |
866 | ||
867 | /* The HV appears to return no more than 256 bytes of command line */ | |
5c916a29 AD |
868 | page = kmalloc(256, GFP_KERNEL); |
869 | if (!page) | |
870 | return -ENOMEM; | |
1da177e4 | 871 | |
5c916a29 AD |
872 | dma_addr = iseries_hv_map(page, 256, DMA_FROM_DEVICE); |
873 | if (dma_addr == DMA_ERROR_CODE) { | |
874 | kfree(page); | |
1da177e4 | 875 | return -ENOMEM; |
5c916a29 AD |
876 | } |
877 | memset(page, 0, 256); | |
1da177e4 LT |
878 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); |
879 | vsp_cmd.cmd = 33; | |
880 | vsp_cmd.sub_data.kern.token = dma_addr; | |
881 | vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex; | |
5c916a29 AD |
882 | vsp_cmd.sub_data.kern.side = (u64)m->private; |
883 | vsp_cmd.sub_data.kern.length = 256; | |
1da177e4 LT |
884 | mb(); |
885 | rc = signal_vsp_instruction(&vsp_cmd); | |
5c916a29 AD |
886 | iseries_hv_unmap(dma_addr, 256, DMA_FROM_DEVICE); |
887 | if (rc) { | |
888 | kfree(page); | |
1da177e4 | 889 | return rc; |
5c916a29 AD |
890 | } |
891 | if (vsp_cmd.result_code != 0) { | |
892 | kfree(page); | |
1da177e4 | 893 | return -ENOMEM; |
5c916a29 | 894 | } |
1da177e4 | 895 | p = page; |
5c916a29 AD |
896 | while (p - page < 256) { |
897 | if (*p == '\0' || *p == '\n') { | |
898 | *p = '\n'; | |
1da177e4 LT |
899 | break; |
900 | } | |
901 | p++; | |
1da177e4 | 902 | |
1da177e4 | 903 | } |
5c916a29 AD |
904 | seq_write(m, page, p - page); |
905 | kfree(page); | |
906 | return 0; | |
907 | } | |
908 | ||
909 | static int mf_cmdline_proc_open(struct inode *inode, struct file *file) | |
910 | { | |
911 | return single_open(file, mf_cmdline_proc_show, PDE(inode)->data); | |
1da177e4 LT |
912 | } |
913 | ||
914 | #if 0 | |
915 | static int mf_getVmlinuxChunk(char *buffer, int *size, int offset, u64 side) | |
916 | { | |
917 | struct vsp_cmd_data vsp_cmd; | |
918 | int rc; | |
919 | int len = *size; | |
920 | dma_addr_t dma_addr; | |
921 | ||
1670b2b2 | 922 | dma_addr = iseries_hv_map(buffer, len, DMA_FROM_DEVICE); |
1da177e4 LT |
923 | memset(buffer, 0, len); |
924 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); | |
925 | vsp_cmd.cmd = 32; | |
926 | vsp_cmd.sub_data.kern.token = dma_addr; | |
927 | vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex; | |
928 | vsp_cmd.sub_data.kern.side = side; | |
929 | vsp_cmd.sub_data.kern.offset = offset; | |
930 | vsp_cmd.sub_data.kern.length = len; | |
931 | mb(); | |
932 | rc = signal_vsp_instruction(&vsp_cmd); | |
933 | if (rc == 0) { | |
934 | if (vsp_cmd.result_code == 0) | |
935 | *size = vsp_cmd.sub_data.length_out; | |
936 | else | |
937 | rc = -ENOMEM; | |
938 | } | |
939 | ||
1670b2b2 | 940 | iseries_hv_unmap(dma_addr, len, DMA_FROM_DEVICE); |
1da177e4 LT |
941 | |
942 | return rc; | |
943 | } | |
944 | ||
945 | static int proc_mf_dump_vmlinux(char *page, char **start, off_t off, | |
946 | int count, int *eof, void *data) | |
947 | { | |
948 | int sizeToGet = count; | |
949 | ||
950 | if (!capable(CAP_SYS_ADMIN)) | |
951 | return -EACCES; | |
952 | ||
953 | if (mf_getVmlinuxChunk(page, &sizeToGet, off, (u64)data) == 0) { | |
954 | if (sizeToGet != 0) { | |
955 | *start = page + off; | |
956 | return sizeToGet; | |
957 | } | |
958 | *eof = 1; | |
959 | return 0; | |
960 | } | |
961 | *eof = 1; | |
962 | return 0; | |
963 | } | |
964 | #endif | |
965 | ||
5c916a29 | 966 | static int mf_side_proc_show(struct seq_file *m, void *v) |
1da177e4 | 967 | { |
1da177e4 LT |
968 | char mf_current_side = ' '; |
969 | struct vsp_cmd_data vsp_cmd; | |
970 | ||
971 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); | |
972 | vsp_cmd.cmd = 2; | |
973 | vsp_cmd.sub_data.ipl_type = 0; | |
974 | mb(); | |
975 | ||
976 | if (signal_vsp_instruction(&vsp_cmd) == 0) { | |
977 | if (vsp_cmd.result_code == 0) { | |
978 | switch (vsp_cmd.sub_data.ipl_type) { | |
979 | case 0: mf_current_side = 'A'; | |
980 | break; | |
981 | case 1: mf_current_side = 'B'; | |
982 | break; | |
983 | case 2: mf_current_side = 'C'; | |
984 | break; | |
985 | default: mf_current_side = 'D'; | |
986 | break; | |
987 | } | |
988 | } | |
989 | } | |
990 | ||
5c916a29 AD |
991 | seq_printf(m, "%c\n", mf_current_side); |
992 | return 0; | |
993 | } | |
1da177e4 | 994 | |
5c916a29 AD |
995 | static int mf_side_proc_open(struct inode *inode, struct file *file) |
996 | { | |
997 | return single_open(file, mf_side_proc_show, NULL); | |
1da177e4 LT |
998 | } |
999 | ||
5c916a29 AD |
1000 | static ssize_t mf_side_proc_write(struct file *file, const char __user *buffer, |
1001 | size_t count, loff_t *pos) | |
1da177e4 LT |
1002 | { |
1003 | char side; | |
1004 | u64 newSide; | |
1005 | struct vsp_cmd_data vsp_cmd; | |
1006 | ||
1007 | if (!capable(CAP_SYS_ADMIN)) | |
1008 | return -EACCES; | |
1009 | ||
1010 | if (count == 0) | |
1011 | return 0; | |
1012 | ||
1013 | if (get_user(side, buffer)) | |
1014 | return -EFAULT; | |
1015 | ||
1016 | switch (side) { | |
1017 | case 'A': newSide = 0; | |
1018 | break; | |
1019 | case 'B': newSide = 1; | |
1020 | break; | |
1021 | case 'C': newSide = 2; | |
1022 | break; | |
1023 | case 'D': newSide = 3; | |
1024 | break; | |
1025 | default: | |
1026 | printk(KERN_ERR "mf_proc.c: proc_mf_change_side: invalid side\n"); | |
1027 | return -EINVAL; | |
1028 | } | |
1029 | ||
1030 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); | |
1031 | vsp_cmd.sub_data.ipl_type = newSide; | |
1032 | vsp_cmd.cmd = 10; | |
1033 | ||
1034 | (void)signal_vsp_instruction(&vsp_cmd); | |
1035 | ||
1036 | return count; | |
1037 | } | |
1038 | ||
5c916a29 AD |
1039 | static const struct file_operations mf_side_proc_fops = { |
1040 | .owner = THIS_MODULE, | |
1041 | .open = mf_side_proc_open, | |
1042 | .read = seq_read, | |
1043 | .llseek = seq_lseek, | |
1044 | .release = single_release, | |
1045 | .write = mf_side_proc_write, | |
1046 | }; | |
1047 | ||
1da177e4 LT |
1048 | #if 0 |
1049 | static void mf_getSrcHistory(char *buffer, int size) | |
1050 | { | |
1051 | struct IplTypeReturnStuff return_stuff; | |
1052 | struct pending_event *ev = new_pending_event(); | |
1053 | int rc = 0; | |
1054 | char *pages[4]; | |
1055 | ||
1056 | pages[0] = kmalloc(4096, GFP_ATOMIC); | |
1057 | pages[1] = kmalloc(4096, GFP_ATOMIC); | |
1058 | pages[2] = kmalloc(4096, GFP_ATOMIC); | |
1059 | pages[3] = kmalloc(4096, GFP_ATOMIC); | |
1060 | if ((ev == NULL) || (pages[0] == NULL) || (pages[1] == NULL) | |
1061 | || (pages[2] == NULL) || (pages[3] == NULL)) | |
1062 | return -ENOMEM; | |
1063 | ||
1064 | return_stuff.xType = 0; | |
1065 | return_stuff.xRc = 0; | |
1066 | return_stuff.xDone = 0; | |
1067 | ev->event.hp_lp_event.xSubtype = 6; | |
1068 | ev->event.hp_lp_event.x.xSubtypeData = | |
1069 | subtype_data('M', 'F', 'V', 'I'); | |
1070 | ev->event.data.vsp_cmd.xEvent = &return_stuff; | |
1071 | ev->event.data.vsp_cmd.cmd = 4; | |
1072 | ev->event.data.vsp_cmd.lp_index = HvLpConfig_getLpIndex(); | |
1073 | ev->event.data.vsp_cmd.result_code = 0xFF; | |
1074 | ev->event.data.vsp_cmd.reserved = 0; | |
426c1a11 SR |
1075 | ev->event.data.vsp_cmd.sub_data.page[0] = iseries_hv_addr(pages[0]); |
1076 | ev->event.data.vsp_cmd.sub_data.page[1] = iseries_hv_addr(pages[1]); | |
1077 | ev->event.data.vsp_cmd.sub_data.page[2] = iseries_hv_addr(pages[2]); | |
1078 | ev->event.data.vsp_cmd.sub_data.page[3] = iseries_hv_addr(pages[3]); | |
1da177e4 LT |
1079 | mb(); |
1080 | if (signal_event(ev) != 0) | |
1081 | return; | |
1082 | ||
1083 | while (return_stuff.xDone != 1) | |
1084 | udelay(10); | |
1085 | if (return_stuff.xRc == 0) | |
1086 | memcpy(buffer, pages[0], size); | |
1087 | kfree(pages[0]); | |
1088 | kfree(pages[1]); | |
1089 | kfree(pages[2]); | |
1090 | kfree(pages[3]); | |
1091 | } | |
1092 | #endif | |
1093 | ||
5c916a29 | 1094 | static int mf_src_proc_show(struct seq_file *m, void *v) |
1da177e4 LT |
1095 | { |
1096 | #if 0 | |
1097 | int len; | |
1098 | ||
1099 | mf_getSrcHistory(page, count); | |
1100 | len = count; | |
1101 | len -= off; | |
1102 | if (len < count) { | |
1103 | *eof = 1; | |
1104 | if (len <= 0) | |
1105 | return 0; | |
1106 | } else | |
1107 | len = count; | |
1108 | *start = page + off; | |
1109 | return len; | |
1110 | #else | |
1111 | return 0; | |
1112 | #endif | |
1113 | } | |
1114 | ||
5c916a29 AD |
1115 | static int mf_src_proc_open(struct inode *inode, struct file *file) |
1116 | { | |
1117 | return single_open(file, mf_src_proc_show, NULL); | |
1118 | } | |
1119 | ||
1120 | static ssize_t mf_src_proc_write(struct file *file, const char __user *buffer, | |
1121 | size_t count, loff_t *pos) | |
1da177e4 LT |
1122 | { |
1123 | char stkbuf[10]; | |
1124 | ||
1125 | if (!capable(CAP_SYS_ADMIN)) | |
1126 | return -EACCES; | |
1127 | ||
1128 | if ((count < 4) && (count != 1)) { | |
1129 | printk(KERN_ERR "mf_proc: invalid src\n"); | |
1130 | return -EINVAL; | |
1131 | } | |
1132 | ||
1133 | if (count > (sizeof(stkbuf) - 1)) | |
1134 | count = sizeof(stkbuf) - 1; | |
1135 | if (copy_from_user(stkbuf, buffer, count)) | |
1136 | return -EFAULT; | |
1137 | ||
1138 | if ((count == 1) && (*stkbuf == '\0')) | |
1139 | mf_clear_src(); | |
1140 | else | |
1141 | mf_display_src(*(u32 *)stkbuf); | |
1142 | ||
1143 | return count; | |
1144 | } | |
1145 | ||
5c916a29 AD |
1146 | static const struct file_operations mf_src_proc_fops = { |
1147 | .owner = THIS_MODULE, | |
1148 | .open = mf_src_proc_open, | |
1149 | .read = seq_read, | |
1150 | .llseek = seq_lseek, | |
1151 | .release = single_release, | |
1152 | .write = mf_src_proc_write, | |
1153 | }; | |
1154 | ||
1155 | static ssize_t mf_cmdline_proc_write(struct file *file, const char __user *buffer, | |
1156 | size_t count, loff_t *pos) | |
1da177e4 | 1157 | { |
5c916a29 | 1158 | void *data = PDE(file->f_path.dentry->d_inode)->data; |
1da177e4 LT |
1159 | struct vsp_cmd_data vsp_cmd; |
1160 | dma_addr_t dma_addr; | |
1161 | char *page; | |
1162 | int ret = -EACCES; | |
1163 | ||
1164 | if (!capable(CAP_SYS_ADMIN)) | |
1165 | goto out; | |
1166 | ||
1167 | dma_addr = 0; | |
1670b2b2 | 1168 | page = iseries_hv_alloc(count, &dma_addr, GFP_ATOMIC); |
1da177e4 LT |
1169 | ret = -ENOMEM; |
1170 | if (page == NULL) | |
1171 | goto out; | |
1172 | ||
1173 | ret = -EFAULT; | |
1174 | if (copy_from_user(page, buffer, count)) | |
1175 | goto out_free; | |
1176 | ||
1177 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); | |
1178 | vsp_cmd.cmd = 31; | |
1179 | vsp_cmd.sub_data.kern.token = dma_addr; | |
1180 | vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex; | |
1181 | vsp_cmd.sub_data.kern.side = (u64)data; | |
1182 | vsp_cmd.sub_data.kern.length = count; | |
1183 | mb(); | |
1184 | (void)signal_vsp_instruction(&vsp_cmd); | |
1185 | ret = count; | |
1186 | ||
1187 | out_free: | |
1670b2b2 | 1188 | iseries_hv_free(count, page, dma_addr); |
1da177e4 LT |
1189 | out: |
1190 | return ret; | |
1191 | } | |
1192 | ||
5c916a29 AD |
1193 | static const struct file_operations mf_cmdline_proc_fops = { |
1194 | .owner = THIS_MODULE, | |
1195 | .open = mf_cmdline_proc_open, | |
1196 | .read = seq_read, | |
1197 | .llseek = seq_lseek, | |
1198 | .release = single_release, | |
1199 | .write = mf_cmdline_proc_write, | |
1200 | }; | |
1201 | ||
1da177e4 LT |
1202 | static ssize_t proc_mf_change_vmlinux(struct file *file, |
1203 | const char __user *buf, | |
1204 | size_t count, loff_t *ppos) | |
1205 | { | |
b4d1ab58 | 1206 | struct proc_dir_entry *dp = PDE(file->f_path.dentry->d_inode); |
1da177e4 LT |
1207 | ssize_t rc; |
1208 | dma_addr_t dma_addr; | |
1209 | char *page; | |
1210 | struct vsp_cmd_data vsp_cmd; | |
1211 | ||
1212 | rc = -EACCES; | |
1213 | if (!capable(CAP_SYS_ADMIN)) | |
1214 | goto out; | |
1215 | ||
1216 | dma_addr = 0; | |
1670b2b2 | 1217 | page = iseries_hv_alloc(count, &dma_addr, GFP_ATOMIC); |
1da177e4 LT |
1218 | rc = -ENOMEM; |
1219 | if (page == NULL) { | |
1220 | printk(KERN_ERR "mf.c: couldn't allocate memory to set vmlinux chunk\n"); | |
1221 | goto out; | |
1222 | } | |
1223 | rc = -EFAULT; | |
1224 | if (copy_from_user(page, buf, count)) | |
1225 | goto out_free; | |
1226 | ||
1227 | memset(&vsp_cmd, 0, sizeof(vsp_cmd)); | |
1228 | vsp_cmd.cmd = 30; | |
1229 | vsp_cmd.sub_data.kern.token = dma_addr; | |
1230 | vsp_cmd.sub_data.kern.address_type = HvLpDma_AddressType_TceIndex; | |
1231 | vsp_cmd.sub_data.kern.side = (u64)dp->data; | |
1232 | vsp_cmd.sub_data.kern.offset = *ppos; | |
1233 | vsp_cmd.sub_data.kern.length = count; | |
1234 | mb(); | |
1235 | rc = signal_vsp_instruction(&vsp_cmd); | |
1236 | if (rc) | |
1237 | goto out_free; | |
1238 | rc = -ENOMEM; | |
1239 | if (vsp_cmd.result_code != 0) | |
1240 | goto out_free; | |
1241 | ||
1242 | *ppos += count; | |
1243 | rc = count; | |
1244 | out_free: | |
1670b2b2 | 1245 | iseries_hv_free(count, page, dma_addr); |
1da177e4 LT |
1246 | out: |
1247 | return rc; | |
1248 | } | |
1249 | ||
5dfe4c96 | 1250 | static const struct file_operations proc_vmlinux_operations = { |
1da177e4 LT |
1251 | .write = proc_mf_change_vmlinux, |
1252 | }; | |
1253 | ||
1254 | static int __init mf_proc_init(void) | |
1255 | { | |
1256 | struct proc_dir_entry *mf_proc_root; | |
1257 | struct proc_dir_entry *ent; | |
1258 | struct proc_dir_entry *mf; | |
1259 | char name[2]; | |
1260 | int i; | |
1261 | ||
d9523aa1 SR |
1262 | if (!firmware_has_feature(FW_FEATURE_ISERIES)) |
1263 | return 0; | |
1264 | ||
1da177e4 LT |
1265 | mf_proc_root = proc_mkdir("iSeries/mf", NULL); |
1266 | if (!mf_proc_root) | |
1267 | return 1; | |
1268 | ||
1269 | name[1] = '\0'; | |
1270 | for (i = 0; i < 4; i++) { | |
1271 | name[0] = 'A' + i; | |
1272 | mf = proc_mkdir(name, mf_proc_root); | |
1273 | if (!mf) | |
1274 | return 1; | |
1275 | ||
5c916a29 AD |
1276 | ent = proc_create_data("cmdline", S_IRUSR|S_IWUSR, mf, |
1277 | &mf_cmdline_proc_fops, (void *)(long)i); | |
1da177e4 LT |
1278 | if (!ent) |
1279 | return 1; | |
1da177e4 LT |
1280 | |
1281 | if (i == 3) /* no vmlinux entry for 'D' */ | |
1282 | continue; | |
1283 | ||
66747138 DL |
1284 | ent = proc_create_data("vmlinux", S_IFREG|S_IWUSR, mf, |
1285 | &proc_vmlinux_operations, | |
1286 | (void *)(long)i); | |
1da177e4 LT |
1287 | if (!ent) |
1288 | return 1; | |
1da177e4 LT |
1289 | } |
1290 | ||
5c916a29 AD |
1291 | ent = proc_create("side", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root, |
1292 | &mf_side_proc_fops); | |
1da177e4 LT |
1293 | if (!ent) |
1294 | return 1; | |
1da177e4 | 1295 | |
5c916a29 AD |
1296 | ent = proc_create("src", S_IFREG|S_IRUSR|S_IWUSR, mf_proc_root, |
1297 | &mf_src_proc_fops); | |
1da177e4 LT |
1298 | if (!ent) |
1299 | return 1; | |
1da177e4 LT |
1300 | |
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | __initcall(mf_proc_init); | |
1305 | ||
1306 | #endif /* CONFIG_PROC_FS */ | |
c8b84976 SR |
1307 | |
1308 | /* | |
1309 | * Get the RTC from the virtual service processor | |
1310 | * This requires flowing LpEvents to the primary partition | |
1311 | */ | |
1312 | void iSeries_get_rtc_time(struct rtc_time *rtc_tm) | |
1313 | { | |
c8b84976 SR |
1314 | mf_get_rtc(rtc_tm); |
1315 | rtc_tm->tm_mon--; | |
1316 | } | |
1317 | ||
1318 | /* | |
1319 | * Set the RTC in the virtual service processor | |
1320 | * This requires flowing LpEvents to the primary partition | |
1321 | */ | |
1322 | int iSeries_set_rtc_time(struct rtc_time *tm) | |
1323 | { | |
1324 | mf_set_rtc(tm); | |
1325 | return 0; | |
1326 | } | |
1327 | ||
143a1dec | 1328 | unsigned long iSeries_get_boot_time(void) |
c8b84976 | 1329 | { |
143a1dec PM |
1330 | struct rtc_time tm; |
1331 | ||
143a1dec PM |
1332 | mf_get_boot_rtc(&tm); |
1333 | return mktime(tm.tm_year + 1900, tm.tm_mon, tm.tm_mday, | |
1334 | tm.tm_hour, tm.tm_min, tm.tm_sec); | |
c8b84976 | 1335 | } |