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781749a4 TY |
1 | /* |
2 | * PS3 Logical Performance Monitor. | |
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/interrupt.h> | |
24 | #include <linux/uaccess.h> | |
fce4d583 | 25 | #include <asm/smp.h> |
483d8876 | 26 | #include <asm/time.h> |
781749a4 TY |
27 | #include <asm/ps3.h> |
28 | #include <asm/lv1call.h> | |
29 | #include <asm/cell-pmu.h> | |
30 | ||
31 | ||
32 | /* BOOKMARK tag macros */ | |
33 | #define PS3_PM_BOOKMARK_START 0x8000000000000000ULL | |
34 | #define PS3_PM_BOOKMARK_STOP 0x4000000000000000ULL | |
35 | #define PS3_PM_BOOKMARK_TAG_KERNEL 0x1000000000000000ULL | |
36 | #define PS3_PM_BOOKMARK_TAG_USER 0x3000000000000000ULL | |
37 | #define PS3_PM_BOOKMARK_TAG_MASK_HI 0xF000000000000000ULL | |
38 | #define PS3_PM_BOOKMARK_TAG_MASK_LO 0x0F00000000000000ULL | |
39 | ||
40 | /* CBE PM CONTROL register macros */ | |
41 | #define PS3_PM_CONTROL_PPU_TH0_BOOKMARK 0x00001000 | |
42 | #define PS3_PM_CONTROL_PPU_TH1_BOOKMARK 0x00000800 | |
43 | #define PS3_PM_CONTROL_PPU_COUNT_MODE_MASK 0x000C0000 | |
44 | #define PS3_PM_CONTROL_PPU_COUNT_MODE_PROBLEM 0x00080000 | |
45 | #define PS3_WRITE_PM_MASK 0xFFFFFFFFFFFFFFFFULL | |
46 | ||
47 | /* CBE PM START STOP register macros */ | |
48 | #define PS3_PM_START_STOP_PPU_TH0_BOOKMARK_START 0x02000000 | |
49 | #define PS3_PM_START_STOP_PPU_TH1_BOOKMARK_START 0x01000000 | |
50 | #define PS3_PM_START_STOP_PPU_TH0_BOOKMARK_STOP 0x00020000 | |
51 | #define PS3_PM_START_STOP_PPU_TH1_BOOKMARK_STOP 0x00010000 | |
52 | #define PS3_PM_START_STOP_START_MASK 0xFF000000 | |
53 | #define PS3_PM_START_STOP_STOP_MASK 0x00FF0000 | |
54 | ||
55 | /* CBE PM COUNTER register macres */ | |
56 | #define PS3_PM_COUNTER_MASK_HI 0xFFFFFFFF00000000ULL | |
57 | #define PS3_PM_COUNTER_MASK_LO 0x00000000FFFFFFFFULL | |
58 | ||
59 | /* BASE SIGNAL GROUP NUMBER macros */ | |
60 | #define PM_ISLAND2_BASE_SIGNAL_GROUP_NUMBER 0 | |
61 | #define PM_ISLAND2_SIGNAL_GROUP_NUMBER1 6 | |
62 | #define PM_ISLAND2_SIGNAL_GROUP_NUMBER2 7 | |
63 | #define PM_ISLAND3_BASE_SIGNAL_GROUP_NUMBER 7 | |
64 | #define PM_ISLAND4_BASE_SIGNAL_GROUP_NUMBER 15 | |
65 | #define PM_SPU_TRIGGER_SIGNAL_GROUP_NUMBER 17 | |
66 | #define PM_SPU_EVENT_SIGNAL_GROUP_NUMBER 18 | |
67 | #define PM_ISLAND5_BASE_SIGNAL_GROUP_NUMBER 18 | |
68 | #define PM_ISLAND6_BASE_SIGNAL_GROUP_NUMBER 24 | |
69 | #define PM_ISLAND7_BASE_SIGNAL_GROUP_NUMBER 49 | |
70 | #define PM_ISLAND8_BASE_SIGNAL_GROUP_NUMBER 52 | |
71 | #define PM_SIG_GROUP_SPU 41 | |
72 | #define PM_SIG_GROUP_SPU_TRIGGER 42 | |
73 | #define PM_SIG_GROUP_SPU_EVENT 43 | |
74 | #define PM_SIG_GROUP_MFC_MAX 60 | |
75 | ||
76 | /** | |
77 | * struct ps3_lpm_shadow_regs - Performance monitor shadow registers. | |
78 | * | |
79 | * @pm_control: Shadow of the processor's pm_control register. | |
80 | * @pm_start_stop: Shadow of the processor's pm_start_stop register. | |
781749a4 TY |
81 | * @group_control: Shadow of the processor's group_control register. |
82 | * @debug_bus_control: Shadow of the processor's debug_bus_control register. | |
83 | * | |
84 | * The logical performance monitor provides a write-only interface to | |
85 | * these processor registers. These shadow variables cache the processor | |
86 | * register values for reading. | |
87 | * | |
88 | * The initial value of the shadow registers at lpm creation is | |
89 | * PS3_LPM_SHADOW_REG_INIT. | |
90 | */ | |
91 | ||
92 | struct ps3_lpm_shadow_regs { | |
93 | u64 pm_control; | |
94 | u64 pm_start_stop; | |
781749a4 TY |
95 | u64 group_control; |
96 | u64 debug_bus_control; | |
97 | }; | |
98 | ||
99 | #define PS3_LPM_SHADOW_REG_INIT 0xFFFFFFFF00000000ULL | |
100 | ||
101 | /** | |
102 | * struct ps3_lpm_priv - Private lpm device data. | |
103 | * | |
104 | * @open: An atomic variable indicating the lpm driver has been opened. | |
105 | * @rights: The lpm rigths granted by the system policy module. A logical | |
106 | * OR of enum ps3_lpm_rights. | |
107 | * @node_id: The node id of a BE prosessor whose performance monitor this | |
108 | * lpar has the right to use. | |
109 | * @pu_id: The lv1 id of the logical PU. | |
110 | * @lpm_id: The lv1 id of this lpm instance. | |
111 | * @outlet_id: The outlet created by lv1 for this lpm instance. | |
112 | * @tb_count: The number of bytes of data held in the lv1 trace buffer. | |
113 | * @tb_cache: Kernel buffer to receive the data from the lv1 trace buffer. | |
114 | * Must be 128 byte aligned. | |
115 | * @tb_cache_size: Size of the kernel @tb_cache buffer. Must be 128 byte | |
116 | * aligned. | |
117 | * @tb_cache_internal: An unaligned buffer allocated by this driver to be | |
118 | * used for the trace buffer cache when ps3_lpm_open() is called with a | |
119 | * NULL tb_cache argument. Otherwise unused. | |
120 | * @shadow: Processor register shadow of type struct ps3_lpm_shadow_regs. | |
121 | * @sbd: The struct ps3_system_bus_device attached to this driver. | |
122 | * | |
123 | * The trace buffer is a buffer allocated and used internally to the lv1 | |
124 | * hypervisor to collect trace data. The trace buffer cache is a guest | |
125 | * buffer that accepts the trace data from the trace buffer. | |
126 | */ | |
127 | ||
128 | struct ps3_lpm_priv { | |
129 | atomic_t open; | |
130 | u64 rights; | |
131 | u64 node_id; | |
132 | u64 pu_id; | |
133 | u64 lpm_id; | |
134 | u64 outlet_id; | |
135 | u64 tb_count; | |
136 | void *tb_cache; | |
137 | u64 tb_cache_size; | |
138 | void *tb_cache_internal; | |
139 | struct ps3_lpm_shadow_regs shadow; | |
140 | struct ps3_system_bus_device *sbd; | |
141 | }; | |
142 | ||
143 | enum { | |
144 | PS3_LPM_DEFAULT_TB_CACHE_SIZE = 0x4000, | |
145 | }; | |
146 | ||
147 | /** | |
148 | * lpm_priv - Static instance of the lpm data. | |
149 | * | |
150 | * Since the exported routines don't support the notion of a device | |
151 | * instance we need to hold the instance in this static variable | |
152 | * and then only allow at most one instance at a time to be created. | |
153 | */ | |
154 | ||
155 | static struct ps3_lpm_priv *lpm_priv; | |
156 | ||
157 | static struct device *sbd_core(void) | |
158 | { | |
159 | BUG_ON(!lpm_priv || !lpm_priv->sbd); | |
160 | return &lpm_priv->sbd->core; | |
161 | } | |
162 | ||
163 | /** | |
164 | * use_start_stop_bookmark - Enable the PPU bookmark trace. | |
165 | * | |
166 | * And it enables PPU bookmark triggers ONLY if the other triggers are not set. | |
167 | * The start/stop bookmarks are inserted at ps3_enable_pm() and ps3_disable_pm() | |
168 | * to start/stop LPM. | |
169 | * | |
170 | * Used to get good quality of the performance counter. | |
171 | */ | |
172 | ||
173 | enum {use_start_stop_bookmark = 1,}; | |
174 | ||
175 | void ps3_set_bookmark(u64 bookmark) | |
176 | { | |
177 | /* | |
178 | * As per the PPE book IV, to avoid bookmark loss there must | |
179 | * not be a traced branch within 10 cycles of setting the | |
180 | * SPRN_BKMK register. The actual text is unclear if 'within' | |
181 | * includes cycles before the call. | |
182 | */ | |
183 | ||
a7faa8dc | 184 | asm volatile("nop;nop;nop;nop;nop;nop;nop;nop;nop;"); |
781749a4 | 185 | mtspr(SPRN_BKMK, bookmark); |
a7faa8dc | 186 | asm volatile("nop;nop;nop;nop;nop;nop;nop;nop;nop;"); |
781749a4 TY |
187 | } |
188 | EXPORT_SYMBOL_GPL(ps3_set_bookmark); | |
189 | ||
190 | void ps3_set_pm_bookmark(u64 tag, u64 incident, u64 th_id) | |
191 | { | |
192 | u64 bookmark; | |
193 | ||
194 | bookmark = (get_tb() & 0x00000000FFFFFFFFULL) | | |
195 | PS3_PM_BOOKMARK_TAG_KERNEL; | |
196 | bookmark = ((tag << 56) & PS3_PM_BOOKMARK_TAG_MASK_LO) | | |
197 | (incident << 48) | (th_id << 32) | bookmark; | |
198 | ps3_set_bookmark(bookmark); | |
199 | } | |
200 | EXPORT_SYMBOL_GPL(ps3_set_pm_bookmark); | |
201 | ||
202 | /** | |
203 | * ps3_read_phys_ctr - Read physical counter registers. | |
204 | * | |
205 | * Each physical counter can act as one 32 bit counter or as two 16 bit | |
206 | * counters. | |
207 | */ | |
208 | ||
209 | u32 ps3_read_phys_ctr(u32 cpu, u32 phys_ctr) | |
210 | { | |
211 | int result; | |
212 | u64 counter0415; | |
213 | u64 counter2637; | |
214 | ||
215 | if (phys_ctr >= NR_PHYS_CTRS) { | |
216 | dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__, | |
217 | __LINE__, phys_ctr); | |
218 | return 0; | |
219 | } | |
220 | ||
221 | result = lv1_set_lpm_counter(lpm_priv->lpm_id, 0, 0, 0, 0, &counter0415, | |
222 | &counter2637); | |
223 | if (result) { | |
224 | dev_err(sbd_core(), "%s:%u: lv1_set_lpm_counter failed: " | |
225 | "phys_ctr %u, %s\n", __func__, __LINE__, phys_ctr, | |
226 | ps3_result(result)); | |
227 | return 0; | |
228 | } | |
229 | ||
230 | switch (phys_ctr) { | |
231 | case 0: | |
232 | return counter0415 >> 32; | |
233 | case 1: | |
234 | return counter0415 & PS3_PM_COUNTER_MASK_LO; | |
235 | case 2: | |
236 | return counter2637 >> 32; | |
237 | case 3: | |
238 | return counter2637 & PS3_PM_COUNTER_MASK_LO; | |
239 | default: | |
240 | BUG(); | |
241 | } | |
242 | return 0; | |
243 | } | |
244 | EXPORT_SYMBOL_GPL(ps3_read_phys_ctr); | |
245 | ||
246 | /** | |
247 | * ps3_write_phys_ctr - Write physical counter registers. | |
248 | * | |
249 | * Each physical counter can act as one 32 bit counter or as two 16 bit | |
250 | * counters. | |
251 | */ | |
252 | ||
253 | void ps3_write_phys_ctr(u32 cpu, u32 phys_ctr, u32 val) | |
254 | { | |
255 | u64 counter0415; | |
256 | u64 counter0415_mask; | |
257 | u64 counter2637; | |
258 | u64 counter2637_mask; | |
259 | int result; | |
260 | ||
261 | if (phys_ctr >= NR_PHYS_CTRS) { | |
262 | dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__, | |
263 | __LINE__, phys_ctr); | |
264 | return; | |
265 | } | |
266 | ||
267 | switch (phys_ctr) { | |
268 | case 0: | |
269 | counter0415 = (u64)val << 32; | |
270 | counter0415_mask = PS3_PM_COUNTER_MASK_HI; | |
271 | counter2637 = 0x0; | |
272 | counter2637_mask = 0x0; | |
273 | break; | |
274 | case 1: | |
275 | counter0415 = (u64)val; | |
276 | counter0415_mask = PS3_PM_COUNTER_MASK_LO; | |
277 | counter2637 = 0x0; | |
278 | counter2637_mask = 0x0; | |
279 | break; | |
280 | case 2: | |
281 | counter0415 = 0x0; | |
282 | counter0415_mask = 0x0; | |
283 | counter2637 = (u64)val << 32; | |
284 | counter2637_mask = PS3_PM_COUNTER_MASK_HI; | |
285 | break; | |
286 | case 3: | |
287 | counter0415 = 0x0; | |
288 | counter0415_mask = 0x0; | |
289 | counter2637 = (u64)val; | |
290 | counter2637_mask = PS3_PM_COUNTER_MASK_LO; | |
291 | break; | |
292 | default: | |
293 | BUG(); | |
294 | } | |
295 | ||
296 | result = lv1_set_lpm_counter(lpm_priv->lpm_id, | |
297 | counter0415, counter0415_mask, | |
298 | counter2637, counter2637_mask, | |
299 | &counter0415, &counter2637); | |
300 | if (result) | |
301 | dev_err(sbd_core(), "%s:%u: lv1_set_lpm_counter failed: " | |
302 | "phys_ctr %u, val %u, %s\n", __func__, __LINE__, | |
303 | phys_ctr, val, ps3_result(result)); | |
304 | } | |
305 | EXPORT_SYMBOL_GPL(ps3_write_phys_ctr); | |
306 | ||
307 | /** | |
308 | * ps3_read_ctr - Read counter. | |
309 | * | |
310 | * Read 16 or 32 bits depending on the current size of the counter. | |
311 | * Counters 4, 5, 6 & 7 are always 16 bit. | |
312 | */ | |
313 | ||
314 | u32 ps3_read_ctr(u32 cpu, u32 ctr) | |
315 | { | |
316 | u32 val; | |
317 | u32 phys_ctr = ctr & (NR_PHYS_CTRS - 1); | |
318 | ||
319 | val = ps3_read_phys_ctr(cpu, phys_ctr); | |
320 | ||
321 | if (ps3_get_ctr_size(cpu, phys_ctr) == 16) | |
322 | val = (ctr < NR_PHYS_CTRS) ? (val >> 16) : (val & 0xffff); | |
323 | ||
324 | return val; | |
325 | } | |
326 | EXPORT_SYMBOL_GPL(ps3_read_ctr); | |
327 | ||
328 | /** | |
329 | * ps3_write_ctr - Write counter. | |
330 | * | |
331 | * Write 16 or 32 bits depending on the current size of the counter. | |
332 | * Counters 4, 5, 6 & 7 are always 16 bit. | |
333 | */ | |
334 | ||
335 | void ps3_write_ctr(u32 cpu, u32 ctr, u32 val) | |
336 | { | |
337 | u32 phys_ctr; | |
338 | u32 phys_val; | |
339 | ||
340 | phys_ctr = ctr & (NR_PHYS_CTRS - 1); | |
341 | ||
342 | if (ps3_get_ctr_size(cpu, phys_ctr) == 16) { | |
343 | phys_val = ps3_read_phys_ctr(cpu, phys_ctr); | |
344 | ||
345 | if (ctr < NR_PHYS_CTRS) | |
346 | val = (val << 16) | (phys_val & 0xffff); | |
347 | else | |
348 | val = (val & 0xffff) | (phys_val & 0xffff0000); | |
349 | } | |
350 | ||
351 | ps3_write_phys_ctr(cpu, phys_ctr, val); | |
352 | } | |
353 | EXPORT_SYMBOL_GPL(ps3_write_ctr); | |
354 | ||
355 | /** | |
356 | * ps3_read_pm07_control - Read counter control registers. | |
357 | * | |
358 | * Each logical counter has a corresponding control register. | |
359 | */ | |
360 | ||
361 | u32 ps3_read_pm07_control(u32 cpu, u32 ctr) | |
362 | { | |
363 | return 0; | |
364 | } | |
365 | EXPORT_SYMBOL_GPL(ps3_read_pm07_control); | |
366 | ||
367 | /** | |
368 | * ps3_write_pm07_control - Write counter control registers. | |
369 | * | |
370 | * Each logical counter has a corresponding control register. | |
371 | */ | |
372 | ||
373 | void ps3_write_pm07_control(u32 cpu, u32 ctr, u32 val) | |
374 | { | |
375 | int result; | |
376 | static const u64 mask = 0xFFFFFFFFFFFFFFFFULL; | |
377 | u64 old_value; | |
378 | ||
379 | if (ctr >= NR_CTRS) { | |
380 | dev_dbg(sbd_core(), "%s:%u: ctr too big: %u\n", __func__, | |
381 | __LINE__, ctr); | |
382 | return; | |
383 | } | |
384 | ||
385 | result = lv1_set_lpm_counter_control(lpm_priv->lpm_id, ctr, val, mask, | |
386 | &old_value); | |
387 | if (result) | |
388 | dev_err(sbd_core(), "%s:%u: lv1_set_lpm_counter_control " | |
389 | "failed: ctr %u, %s\n", __func__, __LINE__, ctr, | |
390 | ps3_result(result)); | |
391 | } | |
392 | EXPORT_SYMBOL_GPL(ps3_write_pm07_control); | |
393 | ||
394 | /** | |
395 | * ps3_read_pm - Read Other LPM control registers. | |
396 | */ | |
397 | ||
398 | u32 ps3_read_pm(u32 cpu, enum pm_reg_name reg) | |
399 | { | |
400 | int result = 0; | |
401 | u64 val = 0; | |
402 | ||
403 | switch (reg) { | |
404 | case pm_control: | |
405 | return lpm_priv->shadow.pm_control; | |
406 | case trace_address: | |
407 | return CBE_PM_TRACE_BUF_EMPTY; | |
408 | case pm_start_stop: | |
409 | return lpm_priv->shadow.pm_start_stop; | |
410 | case pm_interval: | |
a0620156 TY |
411 | result = lv1_set_lpm_interval(lpm_priv->lpm_id, 0, 0, &val); |
412 | if (result) { | |
413 | val = 0; | |
414 | dev_dbg(sbd_core(), "%s:%u: lv1 set_inteval failed: " | |
415 | "reg %u, %s\n", __func__, __LINE__, reg, | |
416 | ps3_result(result)); | |
417 | } | |
418 | return (u32)val; | |
781749a4 TY |
419 | case group_control: |
420 | return lpm_priv->shadow.group_control; | |
421 | case debug_bus_control: | |
422 | return lpm_priv->shadow.debug_bus_control; | |
423 | case pm_status: | |
424 | result = lv1_get_lpm_interrupt_status(lpm_priv->lpm_id, | |
425 | &val); | |
426 | if (result) { | |
427 | val = 0; | |
428 | dev_dbg(sbd_core(), "%s:%u: lv1 get_lpm_status failed: " | |
429 | "reg %u, %s\n", __func__, __LINE__, reg, | |
430 | ps3_result(result)); | |
431 | } | |
432 | return (u32)val; | |
433 | case ext_tr_timer: | |
434 | return 0; | |
435 | default: | |
436 | dev_dbg(sbd_core(), "%s:%u: unknown reg: %d\n", __func__, | |
437 | __LINE__, reg); | |
438 | BUG(); | |
439 | break; | |
440 | } | |
441 | ||
442 | return 0; | |
443 | } | |
444 | EXPORT_SYMBOL_GPL(ps3_read_pm); | |
445 | ||
446 | /** | |
447 | * ps3_write_pm - Write Other LPM control registers. | |
448 | */ | |
449 | ||
450 | void ps3_write_pm(u32 cpu, enum pm_reg_name reg, u32 val) | |
451 | { | |
452 | int result = 0; | |
453 | u64 dummy; | |
454 | ||
455 | switch (reg) { | |
456 | case group_control: | |
457 | if (val != lpm_priv->shadow.group_control) | |
458 | result = lv1_set_lpm_group_control(lpm_priv->lpm_id, | |
459 | val, | |
460 | PS3_WRITE_PM_MASK, | |
461 | &dummy); | |
462 | lpm_priv->shadow.group_control = val; | |
463 | break; | |
464 | case debug_bus_control: | |
465 | if (val != lpm_priv->shadow.debug_bus_control) | |
466 | result = lv1_set_lpm_debug_bus_control(lpm_priv->lpm_id, | |
467 | val, | |
468 | PS3_WRITE_PM_MASK, | |
469 | &dummy); | |
470 | lpm_priv->shadow.debug_bus_control = val; | |
471 | break; | |
472 | case pm_control: | |
473 | if (use_start_stop_bookmark) | |
474 | val |= (PS3_PM_CONTROL_PPU_TH0_BOOKMARK | | |
475 | PS3_PM_CONTROL_PPU_TH1_BOOKMARK); | |
476 | if (val != lpm_priv->shadow.pm_control) | |
477 | result = lv1_set_lpm_general_control(lpm_priv->lpm_id, | |
478 | val, | |
479 | PS3_WRITE_PM_MASK, | |
480 | 0, 0, &dummy, | |
481 | &dummy); | |
482 | lpm_priv->shadow.pm_control = val; | |
483 | break; | |
484 | case pm_interval: | |
a0620156 TY |
485 | result = lv1_set_lpm_interval(lpm_priv->lpm_id, val, |
486 | PS3_WRITE_PM_MASK, &dummy); | |
781749a4 TY |
487 | break; |
488 | case pm_start_stop: | |
489 | if (val != lpm_priv->shadow.pm_start_stop) | |
490 | result = lv1_set_lpm_trigger_control(lpm_priv->lpm_id, | |
491 | val, | |
492 | PS3_WRITE_PM_MASK, | |
493 | &dummy); | |
494 | lpm_priv->shadow.pm_start_stop = val; | |
495 | break; | |
496 | case trace_address: | |
497 | case ext_tr_timer: | |
498 | case pm_status: | |
499 | break; | |
500 | default: | |
501 | dev_dbg(sbd_core(), "%s:%u: unknown reg: %d\n", __func__, | |
502 | __LINE__, reg); | |
503 | BUG(); | |
504 | break; | |
505 | } | |
506 | ||
507 | if (result) | |
508 | dev_err(sbd_core(), "%s:%u: lv1 set_control failed: " | |
509 | "reg %u, %s\n", __func__, __LINE__, reg, | |
510 | ps3_result(result)); | |
511 | } | |
512 | EXPORT_SYMBOL_GPL(ps3_write_pm); | |
513 | ||
514 | /** | |
515 | * ps3_get_ctr_size - Get the size of a physical counter. | |
516 | * | |
517 | * Returns either 16 or 32. | |
518 | */ | |
519 | ||
520 | u32 ps3_get_ctr_size(u32 cpu, u32 phys_ctr) | |
521 | { | |
522 | u32 pm_ctrl; | |
523 | ||
524 | if (phys_ctr >= NR_PHYS_CTRS) { | |
525 | dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__, | |
526 | __LINE__, phys_ctr); | |
527 | return 0; | |
528 | } | |
529 | ||
530 | pm_ctrl = ps3_read_pm(cpu, pm_control); | |
531 | return (pm_ctrl & CBE_PM_16BIT_CTR(phys_ctr)) ? 16 : 32; | |
532 | } | |
533 | EXPORT_SYMBOL_GPL(ps3_get_ctr_size); | |
534 | ||
535 | /** | |
536 | * ps3_set_ctr_size - Set the size of a physical counter to 16 or 32 bits. | |
537 | */ | |
538 | ||
539 | void ps3_set_ctr_size(u32 cpu, u32 phys_ctr, u32 ctr_size) | |
540 | { | |
541 | u32 pm_ctrl; | |
542 | ||
543 | if (phys_ctr >= NR_PHYS_CTRS) { | |
544 | dev_dbg(sbd_core(), "%s:%u: phys_ctr too big: %u\n", __func__, | |
545 | __LINE__, phys_ctr); | |
546 | return; | |
547 | } | |
548 | ||
549 | pm_ctrl = ps3_read_pm(cpu, pm_control); | |
550 | ||
551 | switch (ctr_size) { | |
552 | case 16: | |
553 | pm_ctrl |= CBE_PM_16BIT_CTR(phys_ctr); | |
554 | ps3_write_pm(cpu, pm_control, pm_ctrl); | |
555 | break; | |
556 | ||
557 | case 32: | |
558 | pm_ctrl &= ~CBE_PM_16BIT_CTR(phys_ctr); | |
559 | ps3_write_pm(cpu, pm_control, pm_ctrl); | |
560 | break; | |
561 | default: | |
562 | BUG(); | |
563 | } | |
564 | } | |
565 | EXPORT_SYMBOL_GPL(ps3_set_ctr_size); | |
566 | ||
567 | static u64 pm_translate_signal_group_number_on_island2(u64 subgroup) | |
568 | { | |
569 | ||
570 | if (subgroup == 2) | |
571 | subgroup = 3; | |
572 | ||
573 | if (subgroup <= 6) | |
574 | return PM_ISLAND2_BASE_SIGNAL_GROUP_NUMBER + subgroup; | |
575 | else if (subgroup == 7) | |
576 | return PM_ISLAND2_SIGNAL_GROUP_NUMBER1; | |
577 | else | |
578 | return PM_ISLAND2_SIGNAL_GROUP_NUMBER2; | |
579 | } | |
580 | ||
581 | static u64 pm_translate_signal_group_number_on_island3(u64 subgroup) | |
582 | { | |
583 | ||
584 | switch (subgroup) { | |
585 | case 2: | |
586 | case 3: | |
587 | case 4: | |
588 | subgroup += 2; | |
589 | break; | |
590 | case 5: | |
591 | subgroup = 8; | |
592 | break; | |
593 | default: | |
594 | break; | |
595 | } | |
596 | return PM_ISLAND3_BASE_SIGNAL_GROUP_NUMBER + subgroup; | |
597 | } | |
598 | ||
599 | static u64 pm_translate_signal_group_number_on_island4(u64 subgroup) | |
600 | { | |
601 | return PM_ISLAND4_BASE_SIGNAL_GROUP_NUMBER + subgroup; | |
602 | } | |
603 | ||
604 | static u64 pm_translate_signal_group_number_on_island5(u64 subgroup) | |
605 | { | |
606 | ||
607 | switch (subgroup) { | |
608 | case 3: | |
609 | subgroup = 4; | |
610 | break; | |
611 | case 4: | |
612 | subgroup = 6; | |
613 | break; | |
614 | default: | |
615 | break; | |
616 | } | |
617 | return PM_ISLAND5_BASE_SIGNAL_GROUP_NUMBER + subgroup; | |
618 | } | |
619 | ||
620 | static u64 pm_translate_signal_group_number_on_island6(u64 subgroup, | |
621 | u64 subsubgroup) | |
622 | { | |
623 | switch (subgroup) { | |
624 | case 3: | |
625 | case 4: | |
626 | case 5: | |
627 | subgroup += 1; | |
628 | break; | |
629 | default: | |
630 | break; | |
631 | } | |
632 | ||
633 | switch (subsubgroup) { | |
634 | case 4: | |
635 | case 5: | |
636 | case 6: | |
637 | subsubgroup += 2; | |
638 | break; | |
639 | case 7: | |
640 | case 8: | |
641 | case 9: | |
642 | case 10: | |
643 | subsubgroup += 4; | |
644 | break; | |
645 | case 11: | |
646 | case 12: | |
647 | case 13: | |
648 | subsubgroup += 5; | |
649 | break; | |
650 | default: | |
651 | break; | |
652 | } | |
653 | ||
654 | if (subgroup <= 5) | |
655 | return (PM_ISLAND6_BASE_SIGNAL_GROUP_NUMBER + subgroup); | |
656 | else | |
657 | return (PM_ISLAND6_BASE_SIGNAL_GROUP_NUMBER + subgroup | |
658 | + subsubgroup - 1); | |
659 | } | |
660 | ||
661 | static u64 pm_translate_signal_group_number_on_island7(u64 subgroup) | |
662 | { | |
663 | return PM_ISLAND7_BASE_SIGNAL_GROUP_NUMBER + subgroup; | |
664 | } | |
665 | ||
666 | static u64 pm_translate_signal_group_number_on_island8(u64 subgroup) | |
667 | { | |
668 | return PM_ISLAND8_BASE_SIGNAL_GROUP_NUMBER + subgroup; | |
669 | } | |
670 | ||
671 | static u64 pm_signal_group_to_ps3_lv1_signal_group(u64 group) | |
672 | { | |
673 | u64 island; | |
674 | u64 subgroup; | |
675 | u64 subsubgroup; | |
676 | ||
677 | subgroup = 0; | |
678 | subsubgroup = 0; | |
679 | island = 0; | |
680 | if (group < 1000) { | |
681 | if (group < 100) { | |
682 | if (20 <= group && group < 30) { | |
683 | island = 2; | |
684 | subgroup = group - 20; | |
685 | } else if (30 <= group && group < 40) { | |
686 | island = 3; | |
687 | subgroup = group - 30; | |
688 | } else if (40 <= group && group < 50) { | |
689 | island = 4; | |
690 | subgroup = group - 40; | |
691 | } else if (50 <= group && group < 60) { | |
692 | island = 5; | |
693 | subgroup = group - 50; | |
694 | } else if (60 <= group && group < 70) { | |
695 | island = 6; | |
696 | subgroup = group - 60; | |
697 | } else if (70 <= group && group < 80) { | |
698 | island = 7; | |
699 | subgroup = group - 70; | |
700 | } else if (80 <= group && group < 90) { | |
701 | island = 8; | |
702 | subgroup = group - 80; | |
703 | } | |
704 | } else if (200 <= group && group < 300) { | |
705 | island = 2; | |
706 | subgroup = group - 200; | |
707 | } else if (600 <= group && group < 700) { | |
708 | island = 6; | |
709 | subgroup = 5; | |
710 | subsubgroup = group - 650; | |
711 | } | |
712 | } else if (6000 <= group && group < 7000) { | |
713 | island = 6; | |
714 | subgroup = 5; | |
715 | subsubgroup = group - 6500; | |
716 | } | |
717 | ||
718 | switch (island) { | |
719 | case 2: | |
720 | return pm_translate_signal_group_number_on_island2(subgroup); | |
721 | case 3: | |
722 | return pm_translate_signal_group_number_on_island3(subgroup); | |
723 | case 4: | |
724 | return pm_translate_signal_group_number_on_island4(subgroup); | |
725 | case 5: | |
726 | return pm_translate_signal_group_number_on_island5(subgroup); | |
727 | case 6: | |
728 | return pm_translate_signal_group_number_on_island6(subgroup, | |
729 | subsubgroup); | |
730 | case 7: | |
731 | return pm_translate_signal_group_number_on_island7(subgroup); | |
732 | case 8: | |
733 | return pm_translate_signal_group_number_on_island8(subgroup); | |
734 | default: | |
735 | dev_dbg(sbd_core(), "%s:%u: island not found: %lu\n", __func__, | |
736 | __LINE__, group); | |
737 | BUG(); | |
738 | break; | |
739 | } | |
740 | return 0; | |
741 | } | |
742 | ||
743 | static u64 pm_bus_word_to_ps3_lv1_bus_word(u8 word) | |
744 | { | |
745 | ||
746 | switch (word) { | |
747 | case 1: | |
748 | return 0xF000; | |
749 | case 2: | |
750 | return 0x0F00; | |
751 | case 4: | |
752 | return 0x00F0; | |
753 | case 8: | |
754 | default: | |
755 | return 0x000F; | |
756 | } | |
757 | } | |
758 | ||
759 | static int __ps3_set_signal(u64 lv1_signal_group, u64 bus_select, | |
760 | u64 signal_select, u64 attr1, u64 attr2, u64 attr3) | |
761 | { | |
762 | int ret; | |
763 | ||
764 | ret = lv1_set_lpm_signal(lpm_priv->lpm_id, lv1_signal_group, bus_select, | |
765 | signal_select, attr1, attr2, attr3); | |
766 | if (ret) | |
767 | dev_err(sbd_core(), | |
768 | "%s:%u: error:%d 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n", | |
769 | __func__, __LINE__, ret, lv1_signal_group, bus_select, | |
770 | signal_select, attr1, attr2, attr3); | |
771 | ||
772 | return ret; | |
773 | } | |
774 | ||
775 | int ps3_set_signal(u64 signal_group, u8 signal_bit, u16 sub_unit, | |
776 | u8 bus_word) | |
777 | { | |
778 | int ret; | |
779 | u64 lv1_signal_group; | |
780 | u64 bus_select; | |
781 | u64 signal_select; | |
782 | u64 attr1, attr2, attr3; | |
783 | ||
784 | if (signal_group == 0) | |
785 | return __ps3_set_signal(0, 0, 0, 0, 0, 0); | |
786 | ||
787 | lv1_signal_group = | |
788 | pm_signal_group_to_ps3_lv1_signal_group(signal_group); | |
789 | bus_select = pm_bus_word_to_ps3_lv1_bus_word(bus_word); | |
790 | ||
791 | switch (signal_group) { | |
792 | case PM_SIG_GROUP_SPU_TRIGGER: | |
793 | signal_select = 1; | |
794 | signal_select = signal_select << (63 - signal_bit); | |
795 | break; | |
796 | case PM_SIG_GROUP_SPU_EVENT: | |
797 | signal_select = 1; | |
798 | signal_select = (signal_select << (63 - signal_bit)) | 0x3; | |
799 | break; | |
800 | default: | |
801 | signal_select = 0; | |
802 | break; | |
803 | } | |
804 | ||
805 | /* | |
806 | * 0: physical object. | |
807 | * 1: logical object. | |
808 | * This parameter is only used for the PPE and SPE signals. | |
809 | */ | |
810 | attr1 = 1; | |
811 | ||
812 | /* | |
813 | * This parameter is used to specify the target physical/logical | |
814 | * PPE/SPE object. | |
815 | */ | |
816 | if (PM_SIG_GROUP_SPU <= signal_group && | |
817 | signal_group < PM_SIG_GROUP_MFC_MAX) | |
818 | attr2 = sub_unit; | |
819 | else | |
820 | attr2 = lpm_priv->pu_id; | |
821 | ||
822 | /* | |
823 | * This parameter is only used for setting the SPE signal. | |
824 | */ | |
825 | attr3 = 0; | |
826 | ||
827 | ret = __ps3_set_signal(lv1_signal_group, bus_select, signal_select, | |
828 | attr1, attr2, attr3); | |
829 | if (ret) | |
830 | dev_err(sbd_core(), "%s:%u: __ps3_set_signal failed: %d\n", | |
831 | __func__, __LINE__, ret); | |
832 | ||
833 | return ret; | |
834 | } | |
835 | EXPORT_SYMBOL_GPL(ps3_set_signal); | |
836 | ||
837 | u32 ps3_get_hw_thread_id(int cpu) | |
838 | { | |
839 | return get_hard_smp_processor_id(cpu); | |
840 | } | |
841 | EXPORT_SYMBOL_GPL(ps3_get_hw_thread_id); | |
842 | ||
843 | /** | |
844 | * ps3_enable_pm - Enable the entire performance monitoring unit. | |
845 | * | |
846 | * When we enable the LPM, all pending writes to counters get committed. | |
847 | */ | |
848 | ||
849 | void ps3_enable_pm(u32 cpu) | |
850 | { | |
851 | int result; | |
852 | u64 tmp; | |
853 | int insert_bookmark = 0; | |
854 | ||
855 | lpm_priv->tb_count = 0; | |
856 | ||
857 | if (use_start_stop_bookmark) { | |
858 | if (!(lpm_priv->shadow.pm_start_stop & | |
859 | (PS3_PM_START_STOP_START_MASK | |
860 | | PS3_PM_START_STOP_STOP_MASK))) { | |
861 | result = lv1_set_lpm_trigger_control(lpm_priv->lpm_id, | |
862 | (PS3_PM_START_STOP_PPU_TH0_BOOKMARK_START | | |
863 | PS3_PM_START_STOP_PPU_TH1_BOOKMARK_START | | |
864 | PS3_PM_START_STOP_PPU_TH0_BOOKMARK_STOP | | |
865 | PS3_PM_START_STOP_PPU_TH1_BOOKMARK_STOP), | |
866 | 0xFFFFFFFFFFFFFFFFULL, &tmp); | |
867 | ||
868 | if (result) | |
869 | dev_err(sbd_core(), "%s:%u: " | |
870 | "lv1_set_lpm_trigger_control failed: " | |
871 | "%s\n", __func__, __LINE__, | |
872 | ps3_result(result)); | |
873 | ||
874 | insert_bookmark = !result; | |
875 | } | |
876 | } | |
877 | ||
878 | result = lv1_start_lpm(lpm_priv->lpm_id); | |
879 | ||
880 | if (result) | |
881 | dev_err(sbd_core(), "%s:%u: lv1_start_lpm failed: %s\n", | |
882 | __func__, __LINE__, ps3_result(result)); | |
883 | ||
884 | if (use_start_stop_bookmark && !result && insert_bookmark) | |
885 | ps3_set_bookmark(get_tb() | PS3_PM_BOOKMARK_START); | |
886 | } | |
887 | EXPORT_SYMBOL_GPL(ps3_enable_pm); | |
888 | ||
889 | /** | |
890 | * ps3_disable_pm - Disable the entire performance monitoring unit. | |
891 | */ | |
892 | ||
893 | void ps3_disable_pm(u32 cpu) | |
894 | { | |
895 | int result; | |
896 | u64 tmp; | |
897 | ||
898 | ps3_set_bookmark(get_tb() | PS3_PM_BOOKMARK_STOP); | |
899 | ||
900 | result = lv1_stop_lpm(lpm_priv->lpm_id, &tmp); | |
901 | ||
902 | if (result) { | |
903 | if(result != LV1_WRONG_STATE) | |
904 | dev_err(sbd_core(), "%s:%u: lv1_stop_lpm failed: %s\n", | |
905 | __func__, __LINE__, ps3_result(result)); | |
906 | return; | |
907 | } | |
908 | ||
909 | lpm_priv->tb_count = tmp; | |
910 | ||
911 | dev_dbg(sbd_core(), "%s:%u: tb_count %lu (%lxh)\n", __func__, __LINE__, | |
912 | lpm_priv->tb_count, lpm_priv->tb_count); | |
913 | } | |
914 | EXPORT_SYMBOL_GPL(ps3_disable_pm); | |
915 | ||
916 | /** | |
917 | * ps3_lpm_copy_tb - Copy data from the trace buffer to a kernel buffer. | |
918 | * @offset: Offset in bytes from the start of the trace buffer. | |
919 | * @buf: Copy destination. | |
920 | * @count: Maximum count of bytes to copy. | |
921 | * @bytes_copied: Pointer to a variable that will recieve the number of | |
922 | * bytes copied to @buf. | |
923 | * | |
924 | * On error @buf will contain any successfully copied trace buffer data | |
925 | * and bytes_copied will be set to the number of bytes successfully copied. | |
926 | */ | |
927 | ||
928 | int ps3_lpm_copy_tb(unsigned long offset, void *buf, unsigned long count, | |
929 | unsigned long *bytes_copied) | |
930 | { | |
931 | int result; | |
932 | ||
933 | *bytes_copied = 0; | |
934 | ||
935 | if (!lpm_priv->tb_cache) | |
936 | return -EPERM; | |
937 | ||
938 | if (offset >= lpm_priv->tb_count) | |
939 | return 0; | |
940 | ||
941 | count = min(count, lpm_priv->tb_count - offset); | |
942 | ||
943 | while (*bytes_copied < count) { | |
944 | const unsigned long request = count - *bytes_copied; | |
945 | u64 tmp; | |
946 | ||
947 | result = lv1_copy_lpm_trace_buffer(lpm_priv->lpm_id, offset, | |
948 | request, &tmp); | |
949 | if (result) { | |
950 | dev_dbg(sbd_core(), "%s:%u: 0x%lx bytes at 0x%lx\n", | |
951 | __func__, __LINE__, request, offset); | |
952 | ||
953 | dev_err(sbd_core(), "%s:%u: lv1_copy_lpm_trace_buffer " | |
954 | "failed: %s\n", __func__, __LINE__, | |
955 | ps3_result(result)); | |
956 | return result == LV1_WRONG_STATE ? -EBUSY : -EINVAL; | |
957 | } | |
958 | ||
959 | memcpy(buf, lpm_priv->tb_cache, tmp); | |
960 | buf += tmp; | |
961 | *bytes_copied += tmp; | |
962 | offset += tmp; | |
963 | } | |
964 | dev_dbg(sbd_core(), "%s:%u: copied %lxh bytes\n", __func__, __LINE__, | |
965 | *bytes_copied); | |
966 | ||
967 | return 0; | |
968 | } | |
969 | EXPORT_SYMBOL_GPL(ps3_lpm_copy_tb); | |
970 | ||
971 | /** | |
972 | * ps3_lpm_copy_tb_to_user - Copy data from the trace buffer to a user buffer. | |
973 | * @offset: Offset in bytes from the start of the trace buffer. | |
974 | * @buf: A __user copy destination. | |
975 | * @count: Maximum count of bytes to copy. | |
976 | * @bytes_copied: Pointer to a variable that will recieve the number of | |
977 | * bytes copied to @buf. | |
978 | * | |
979 | * On error @buf will contain any successfully copied trace buffer data | |
980 | * and bytes_copied will be set to the number of bytes successfully copied. | |
981 | */ | |
982 | ||
983 | int ps3_lpm_copy_tb_to_user(unsigned long offset, void __user *buf, | |
984 | unsigned long count, unsigned long *bytes_copied) | |
985 | { | |
986 | int result; | |
987 | ||
988 | *bytes_copied = 0; | |
989 | ||
990 | if (!lpm_priv->tb_cache) | |
991 | return -EPERM; | |
992 | ||
993 | if (offset >= lpm_priv->tb_count) | |
994 | return 0; | |
995 | ||
996 | count = min(count, lpm_priv->tb_count - offset); | |
997 | ||
998 | while (*bytes_copied < count) { | |
999 | const unsigned long request = count - *bytes_copied; | |
1000 | u64 tmp; | |
1001 | ||
1002 | result = lv1_copy_lpm_trace_buffer(lpm_priv->lpm_id, offset, | |
1003 | request, &tmp); | |
1004 | if (result) { | |
1005 | dev_dbg(sbd_core(), "%s:%u: 0x%lx bytes at 0x%lx\n", | |
1006 | __func__, __LINE__, request, offset); | |
1007 | dev_err(sbd_core(), "%s:%u: lv1_copy_lpm_trace_buffer " | |
1008 | "failed: %s\n", __func__, __LINE__, | |
1009 | ps3_result(result)); | |
1010 | return result == LV1_WRONG_STATE ? -EBUSY : -EINVAL; | |
1011 | } | |
1012 | ||
1013 | result = copy_to_user(buf, lpm_priv->tb_cache, tmp); | |
1014 | ||
1015 | if (result) { | |
1016 | dev_dbg(sbd_core(), "%s:%u: 0x%lx bytes at 0x%p\n", | |
1017 | __func__, __LINE__, tmp, buf); | |
1018 | dev_err(sbd_core(), "%s:%u: copy_to_user failed: %d\n", | |
1019 | __func__, __LINE__, result); | |
1020 | return -EFAULT; | |
1021 | } | |
1022 | ||
1023 | buf += tmp; | |
1024 | *bytes_copied += tmp; | |
1025 | offset += tmp; | |
1026 | } | |
1027 | dev_dbg(sbd_core(), "%s:%u: copied %lxh bytes\n", __func__, __LINE__, | |
1028 | *bytes_copied); | |
1029 | ||
1030 | return 0; | |
1031 | } | |
1032 | EXPORT_SYMBOL_GPL(ps3_lpm_copy_tb_to_user); | |
1033 | ||
1034 | /** | |
1035 | * ps3_get_and_clear_pm_interrupts - | |
1036 | * | |
1037 | * Clearing interrupts for the entire performance monitoring unit. | |
1038 | * Reading pm_status clears the interrupt bits. | |
1039 | */ | |
1040 | ||
1041 | u32 ps3_get_and_clear_pm_interrupts(u32 cpu) | |
1042 | { | |
1043 | return ps3_read_pm(cpu, pm_status); | |
1044 | } | |
1045 | EXPORT_SYMBOL_GPL(ps3_get_and_clear_pm_interrupts); | |
1046 | ||
1047 | /** | |
1048 | * ps3_enable_pm_interrupts - | |
1049 | * | |
1050 | * Enabling interrupts for the entire performance monitoring unit. | |
1051 | * Enables the interrupt bits in the pm_status register. | |
1052 | */ | |
1053 | ||
1054 | void ps3_enable_pm_interrupts(u32 cpu, u32 thread, u32 mask) | |
1055 | { | |
1056 | if (mask) | |
1057 | ps3_write_pm(cpu, pm_status, mask); | |
1058 | } | |
1059 | EXPORT_SYMBOL_GPL(ps3_enable_pm_interrupts); | |
1060 | ||
1061 | /** | |
1062 | * ps3_enable_pm_interrupts - | |
1063 | * | |
1064 | * Disabling interrupts for the entire performance monitoring unit. | |
1065 | */ | |
1066 | ||
1067 | void ps3_disable_pm_interrupts(u32 cpu) | |
1068 | { | |
1069 | ps3_get_and_clear_pm_interrupts(cpu); | |
1070 | ps3_write_pm(cpu, pm_status, 0); | |
1071 | } | |
1072 | EXPORT_SYMBOL_GPL(ps3_disable_pm_interrupts); | |
1073 | ||
1074 | /** | |
1075 | * ps3_lpm_open - Open the logical performance monitor device. | |
1076 | * @tb_type: Specifies the type of trace buffer lv1 sould use for this lpm | |
1077 | * instance, specified by one of enum ps3_lpm_tb_type. | |
1078 | * @tb_cache: Optional user supplied buffer to use as the trace buffer cache. | |
1079 | * If NULL, the driver will allocate and manage an internal buffer. | |
1080 | * Unused when when @tb_type is PS3_LPM_TB_TYPE_NONE. | |
1081 | * @tb_cache_size: The size in bytes of the user supplied @tb_cache buffer. | |
1082 | * Unused when @tb_cache is NULL or @tb_type is PS3_LPM_TB_TYPE_NONE. | |
1083 | */ | |
1084 | ||
1085 | int ps3_lpm_open(enum ps3_lpm_tb_type tb_type, void *tb_cache, | |
1086 | u64 tb_cache_size) | |
1087 | { | |
1088 | int result; | |
1089 | u64 tb_size; | |
1090 | ||
1091 | BUG_ON(!lpm_priv); | |
1092 | BUG_ON(tb_type != PS3_LPM_TB_TYPE_NONE | |
1093 | && tb_type != PS3_LPM_TB_TYPE_INTERNAL); | |
1094 | ||
1095 | if (tb_type == PS3_LPM_TB_TYPE_NONE && tb_cache) | |
1096 | dev_dbg(sbd_core(), "%s:%u: bad in vals\n", __func__, __LINE__); | |
1097 | ||
1098 | if (!atomic_add_unless(&lpm_priv->open, 1, 1)) { | |
1099 | dev_dbg(sbd_core(), "%s:%u: busy\n", __func__, __LINE__); | |
1100 | return -EBUSY; | |
1101 | } | |
1102 | ||
1103 | /* Note tb_cache needs 128 byte alignment. */ | |
1104 | ||
1105 | if (tb_type == PS3_LPM_TB_TYPE_NONE) { | |
1106 | lpm_priv->tb_cache_size = 0; | |
1107 | lpm_priv->tb_cache_internal = NULL; | |
1108 | lpm_priv->tb_cache = NULL; | |
1109 | } else if (tb_cache) { | |
1110 | if (tb_cache != (void *)_ALIGN_UP((unsigned long)tb_cache, 128) | |
1111 | || tb_cache_size != _ALIGN_UP(tb_cache_size, 128)) { | |
1112 | dev_err(sbd_core(), "%s:%u: unaligned tb_cache\n", | |
1113 | __func__, __LINE__); | |
1114 | result = -EINVAL; | |
1115 | goto fail_align; | |
1116 | } | |
1117 | lpm_priv->tb_cache_size = tb_cache_size; | |
1118 | lpm_priv->tb_cache_internal = NULL; | |
1119 | lpm_priv->tb_cache = tb_cache; | |
1120 | } else { | |
1121 | lpm_priv->tb_cache_size = PS3_LPM_DEFAULT_TB_CACHE_SIZE; | |
1122 | lpm_priv->tb_cache_internal = kzalloc( | |
1123 | lpm_priv->tb_cache_size + 127, GFP_KERNEL); | |
1124 | if (!lpm_priv->tb_cache_internal) { | |
1125 | dev_err(sbd_core(), "%s:%u: alloc internal tb_cache " | |
1126 | "failed\n", __func__, __LINE__); | |
1127 | result = -ENOMEM; | |
1128 | goto fail_malloc; | |
1129 | } | |
1130 | lpm_priv->tb_cache = (void *)_ALIGN_UP( | |
1131 | (unsigned long)lpm_priv->tb_cache_internal, 128); | |
1132 | } | |
1133 | ||
1134 | result = lv1_construct_lpm(lpm_priv->node_id, tb_type, 0, 0, | |
1135 | ps3_mm_phys_to_lpar(__pa(lpm_priv->tb_cache)), | |
1136 | lpm_priv->tb_cache_size, &lpm_priv->lpm_id, | |
1137 | &lpm_priv->outlet_id, &tb_size); | |
1138 | ||
1139 | if (result) { | |
1140 | dev_err(sbd_core(), "%s:%u: lv1_construct_lpm failed: %s\n", | |
1141 | __func__, __LINE__, ps3_result(result)); | |
1142 | result = -EINVAL; | |
1143 | goto fail_construct; | |
1144 | } | |
1145 | ||
1146 | lpm_priv->shadow.pm_control = PS3_LPM_SHADOW_REG_INIT; | |
1147 | lpm_priv->shadow.pm_start_stop = PS3_LPM_SHADOW_REG_INIT; | |
781749a4 TY |
1148 | lpm_priv->shadow.group_control = PS3_LPM_SHADOW_REG_INIT; |
1149 | lpm_priv->shadow.debug_bus_control = PS3_LPM_SHADOW_REG_INIT; | |
1150 | ||
1151 | dev_dbg(sbd_core(), "%s:%u: lpm_id 0x%lx, outlet_id 0x%lx, " | |
1152 | "tb_size 0x%lx\n", __func__, __LINE__, lpm_priv->lpm_id, | |
1153 | lpm_priv->outlet_id, tb_size); | |
1154 | ||
1155 | return 0; | |
1156 | ||
1157 | fail_construct: | |
1158 | kfree(lpm_priv->tb_cache_internal); | |
1159 | lpm_priv->tb_cache_internal = NULL; | |
1160 | fail_malloc: | |
1161 | fail_align: | |
1162 | atomic_dec(&lpm_priv->open); | |
1163 | return result; | |
1164 | } | |
1165 | EXPORT_SYMBOL_GPL(ps3_lpm_open); | |
1166 | ||
1167 | /** | |
1168 | * ps3_lpm_close - Close the lpm device. | |
1169 | * | |
1170 | */ | |
1171 | ||
1172 | int ps3_lpm_close(void) | |
1173 | { | |
1174 | dev_dbg(sbd_core(), "%s:%u\n", __func__, __LINE__); | |
1175 | ||
1176 | lv1_destruct_lpm(lpm_priv->lpm_id); | |
1177 | lpm_priv->lpm_id = 0; | |
1178 | ||
1179 | kfree(lpm_priv->tb_cache_internal); | |
1180 | lpm_priv->tb_cache_internal = NULL; | |
1181 | ||
1182 | atomic_dec(&lpm_priv->open); | |
1183 | return 0; | |
1184 | } | |
1185 | EXPORT_SYMBOL_GPL(ps3_lpm_close); | |
1186 | ||
1187 | static int __devinit ps3_lpm_probe(struct ps3_system_bus_device *dev) | |
1188 | { | |
1189 | dev_dbg(&dev->core, " -> %s:%u\n", __func__, __LINE__); | |
1190 | ||
1191 | if (lpm_priv) { | |
1192 | dev_info(&dev->core, "%s:%u: called twice\n", | |
1193 | __func__, __LINE__); | |
1194 | return -EBUSY; | |
1195 | } | |
1196 | ||
1197 | lpm_priv = kzalloc(sizeof(*lpm_priv), GFP_KERNEL); | |
1198 | ||
1199 | if (!lpm_priv) | |
1200 | return -ENOMEM; | |
1201 | ||
1202 | lpm_priv->sbd = dev; | |
1203 | lpm_priv->node_id = dev->lpm.node_id; | |
1204 | lpm_priv->pu_id = dev->lpm.pu_id; | |
1205 | lpm_priv->rights = dev->lpm.rights; | |
1206 | ||
1207 | dev_info(&dev->core, " <- %s:%u:\n", __func__, __LINE__); | |
1208 | ||
1209 | return 0; | |
1210 | } | |
1211 | ||
1212 | static int ps3_lpm_remove(struct ps3_system_bus_device *dev) | |
1213 | { | |
1214 | dev_dbg(&dev->core, " -> %s:%u:\n", __func__, __LINE__); | |
1215 | ||
1216 | ps3_lpm_close(); | |
1217 | ||
1218 | kfree(lpm_priv); | |
1219 | lpm_priv = NULL; | |
1220 | ||
1221 | dev_info(&dev->core, " <- %s:%u:\n", __func__, __LINE__); | |
1222 | return 0; | |
1223 | } | |
1224 | ||
1225 | static struct ps3_system_bus_driver ps3_lpm_driver = { | |
1226 | .match_id = PS3_MATCH_ID_LPM, | |
1227 | .core.name = "ps3-lpm", | |
1228 | .core.owner = THIS_MODULE, | |
1229 | .probe = ps3_lpm_probe, | |
1230 | .remove = ps3_lpm_remove, | |
1231 | .shutdown = ps3_lpm_remove, | |
1232 | }; | |
1233 | ||
1234 | static int __init ps3_lpm_init(void) | |
1235 | { | |
1236 | pr_debug("%s:%d:\n", __func__, __LINE__); | |
1237 | return ps3_system_bus_driver_register(&ps3_lpm_driver); | |
1238 | } | |
1239 | ||
1240 | static void __exit ps3_lpm_exit(void) | |
1241 | { | |
1242 | pr_debug("%s:%d:\n", __func__, __LINE__); | |
1243 | ps3_system_bus_driver_unregister(&ps3_lpm_driver); | |
1244 | } | |
1245 | ||
1246 | module_init(ps3_lpm_init); | |
1247 | module_exit(ps3_lpm_exit); | |
1248 | ||
1249 | MODULE_LICENSE("GPL v2"); | |
1250 | MODULE_DESCRIPTION("PS3 Logical Performance Monitor Driver"); | |
1251 | MODULE_AUTHOR("Sony Corporation"); | |
1252 | MODULE_ALIAS(PS3_MODULE_ALIAS_LPM); |