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22#include <linux/acpi.h>
23#include <linux/clk.h>
24#include <linux/cpuhotplug.h>
25#include <linux/cpumask.h>
26#include <linux/interrupt.h>
27#include <linux/io.h>
28#include <linux/mfd/syscon.h>
29#include <linux/module.h>
30#include <linux/of_address.h>
31#include <linux/of_fdt.h>
32#include <linux/of_irq.h>
33#include <linux/of_platform.h>
34#include <linux/perf_event.h>
35#include <linux/platform_device.h>
36#include <linux/regmap.h>
37#include <linux/slab.h>
38
39#define CSW_CSWCR 0x0000
40#define CSW_CSWCR_DUALMCB_MASK BIT(0)
41#define CSW_CSWCR_MCB0_ROUTING(x) (((x) & 0x0C) >> 2)
42#define CSW_CSWCR_MCB1_ROUTING(x) (((x) & 0x30) >> 4)
43#define MCBADDRMR 0x0000
44#define MCBADDRMR_DUALMCU_MODE_MASK BIT(2)
45
46#define PCPPMU_INTSTATUS_REG 0x000
47#define PCPPMU_INTMASK_REG 0x004
48#define PCPPMU_INTMASK 0x0000000F
49#define PCPPMU_INTENMASK 0xFFFFFFFF
50#define PCPPMU_INTCLRMASK 0xFFFFFFF0
51#define PCPPMU_INT_MCU BIT(0)
52#define PCPPMU_INT_MCB BIT(1)
53#define PCPPMU_INT_L3C BIT(2)
54#define PCPPMU_INT_IOB BIT(3)
55
56#define PCPPMU_V3_INTMASK 0x00FF33FF
57#define PCPPMU_V3_INTENMASK 0xFFFFFFFF
58#define PCPPMU_V3_INTCLRMASK 0xFF00CC00
59#define PCPPMU_V3_INT_MCU 0x000000FF
60#define PCPPMU_V3_INT_MCB 0x00000300
61#define PCPPMU_V3_INT_L3C 0x00FF0000
62#define PCPPMU_V3_INT_IOB 0x00003000
63
64#define PMU_MAX_COUNTERS 4
65#define PMU_CNT_MAX_PERIOD 0xFFFFFFFFULL
66#define PMU_V3_CNT_MAX_PERIOD 0xFFFFFFFFFFFFFFFFULL
67#define PMU_OVERFLOW_MASK 0xF
68#define PMU_PMCR_E BIT(0)
69#define PMU_PMCR_P BIT(1)
70
71#define PMU_PMEVCNTR0 0x000
72#define PMU_PMEVCNTR1 0x004
73#define PMU_PMEVCNTR2 0x008
74#define PMU_PMEVCNTR3 0x00C
75#define PMU_PMEVTYPER0 0x400
76#define PMU_PMEVTYPER1 0x404
77#define PMU_PMEVTYPER2 0x408
78#define PMU_PMEVTYPER3 0x40C
79#define PMU_PMAMR0 0xA00
80#define PMU_PMAMR1 0xA04
81#define PMU_PMCNTENSET 0xC00
82#define PMU_PMCNTENCLR 0xC20
83#define PMU_PMINTENSET 0xC40
84#define PMU_PMINTENCLR 0xC60
85#define PMU_PMOVSR 0xC80
86#define PMU_PMCR 0xE04
87
88
89#define PMU_PMOVSCLR 0xC80
90#define PMU_PMOVSSET 0xCC0
91
92#define to_pmu_dev(p) container_of(p, struct xgene_pmu_dev, pmu)
93#define GET_CNTR(ev) (ev->hw.idx)
94#define GET_EVENTID(ev) (ev->hw.config & 0xFFULL)
95#define GET_AGENTID(ev) (ev->hw.config_base & 0xFFFFFFFFUL)
96#define GET_AGENT1ID(ev) ((ev->hw.config_base >> 32) & 0xFFFFFFFFUL)
97
98struct hw_pmu_info {
99 u32 type;
100 u32 enable_mask;
101 void __iomem *csr;
102};
103
104struct xgene_pmu_dev {
105 struct hw_pmu_info *inf;
106 struct xgene_pmu *parent;
107 struct pmu pmu;
108 u8 max_counters;
109 DECLARE_BITMAP(cntr_assign_mask, PMU_MAX_COUNTERS);
110 u64 max_period;
111 const struct attribute_group **attr_groups;
112 struct perf_event *pmu_counter_event[PMU_MAX_COUNTERS];
113};
114
115struct xgene_pmu_ops {
116 void (*mask_int)(struct xgene_pmu *pmu);
117 void (*unmask_int)(struct xgene_pmu *pmu);
118 u64 (*read_counter)(struct xgene_pmu_dev *pmu, int idx);
119 void (*write_counter)(struct xgene_pmu_dev *pmu, int idx, u64 val);
120 void (*write_evttype)(struct xgene_pmu_dev *pmu_dev, int idx, u32 val);
121 void (*write_agentmsk)(struct xgene_pmu_dev *pmu_dev, u32 val);
122 void (*write_agent1msk)(struct xgene_pmu_dev *pmu_dev, u32 val);
123 void (*enable_counter)(struct xgene_pmu_dev *pmu_dev, int idx);
124 void (*disable_counter)(struct xgene_pmu_dev *pmu_dev, int idx);
125 void (*enable_counter_int)(struct xgene_pmu_dev *pmu_dev, int idx);
126 void (*disable_counter_int)(struct xgene_pmu_dev *pmu_dev, int idx);
127 void (*reset_counters)(struct xgene_pmu_dev *pmu_dev);
128 void (*start_counters)(struct xgene_pmu_dev *pmu_dev);
129 void (*stop_counters)(struct xgene_pmu_dev *pmu_dev);
130};
131
132struct xgene_pmu {
133 struct device *dev;
134 struct hlist_node node;
135 int version;
136 void __iomem *pcppmu_csr;
137 u32 mcb_active_mask;
138 u32 mc_active_mask;
139 u32 l3c_active_mask;
140 cpumask_t cpu;
141 int irq;
142 raw_spinlock_t lock;
143 const struct xgene_pmu_ops *ops;
144 struct list_head l3cpmus;
145 struct list_head iobpmus;
146 struct list_head mcbpmus;
147 struct list_head mcpmus;
148};
149
150struct xgene_pmu_dev_ctx {
151 char *name;
152 struct list_head next;
153 struct xgene_pmu_dev *pmu_dev;
154 struct hw_pmu_info inf;
155};
156
157struct xgene_pmu_data {
158 int id;
159 u32 data;
160};
161
162enum xgene_pmu_version {
163 PCP_PMU_V1 = 1,
164 PCP_PMU_V2,
165 PCP_PMU_V3,
166};
167
168enum xgene_pmu_dev_type {
169 PMU_TYPE_L3C = 0,
170 PMU_TYPE_IOB,
171 PMU_TYPE_IOB_SLOW,
172 PMU_TYPE_MCB,
173 PMU_TYPE_MC,
174};
175
176
177
178
179static ssize_t xgene_pmu_format_show(struct device *dev,
180 struct device_attribute *attr, char *buf)
181{
182 struct dev_ext_attribute *eattr;
183
184 eattr = container_of(attr, struct dev_ext_attribute, attr);
185 return sprintf(buf, "%s\n", (char *) eattr->var);
186}
187
188#define XGENE_PMU_FORMAT_ATTR(_name, _config) \
189 (&((struct dev_ext_attribute[]) { \
190 { .attr = __ATTR(_name, S_IRUGO, xgene_pmu_format_show, NULL), \
191 .var = (void *) _config, } \
192 })[0].attr.attr)
193
194static struct attribute *l3c_pmu_format_attrs[] = {
195 XGENE_PMU_FORMAT_ATTR(l3c_eventid, "config:0-7"),
196 XGENE_PMU_FORMAT_ATTR(l3c_agentid, "config1:0-9"),
197 NULL,
198};
199
200static struct attribute *iob_pmu_format_attrs[] = {
201 XGENE_PMU_FORMAT_ATTR(iob_eventid, "config:0-7"),
202 XGENE_PMU_FORMAT_ATTR(iob_agentid, "config1:0-63"),
203 NULL,
204};
205
206static struct attribute *mcb_pmu_format_attrs[] = {
207 XGENE_PMU_FORMAT_ATTR(mcb_eventid, "config:0-5"),
208 XGENE_PMU_FORMAT_ATTR(mcb_agentid, "config1:0-9"),
209 NULL,
210};
211
212static struct attribute *mc_pmu_format_attrs[] = {
213 XGENE_PMU_FORMAT_ATTR(mc_eventid, "config:0-28"),
214 NULL,
215};
216
217static const struct attribute_group l3c_pmu_format_attr_group = {
218 .name = "format",
219 .attrs = l3c_pmu_format_attrs,
220};
221
222static const struct attribute_group iob_pmu_format_attr_group = {
223 .name = "format",
224 .attrs = iob_pmu_format_attrs,
225};
226
227static const struct attribute_group mcb_pmu_format_attr_group = {
228 .name = "format",
229 .attrs = mcb_pmu_format_attrs,
230};
231
232static const struct attribute_group mc_pmu_format_attr_group = {
233 .name = "format",
234 .attrs = mc_pmu_format_attrs,
235};
236
237static struct attribute *l3c_pmu_v3_format_attrs[] = {
238 XGENE_PMU_FORMAT_ATTR(l3c_eventid, "config:0-39"),
239 NULL,
240};
241
242static struct attribute *iob_pmu_v3_format_attrs[] = {
243 XGENE_PMU_FORMAT_ATTR(iob_eventid, "config:0-47"),
244 NULL,
245};
246
247static struct attribute *iob_slow_pmu_v3_format_attrs[] = {
248 XGENE_PMU_FORMAT_ATTR(iob_slow_eventid, "config:0-16"),
249 NULL,
250};
251
252static struct attribute *mcb_pmu_v3_format_attrs[] = {
253 XGENE_PMU_FORMAT_ATTR(mcb_eventid, "config:0-35"),
254 NULL,
255};
256
257static struct attribute *mc_pmu_v3_format_attrs[] = {
258 XGENE_PMU_FORMAT_ATTR(mc_eventid, "config:0-44"),
259 NULL,
260};
261
262static const struct attribute_group l3c_pmu_v3_format_attr_group = {
263 .name = "format",
264 .attrs = l3c_pmu_v3_format_attrs,
265};
266
267static const struct attribute_group iob_pmu_v3_format_attr_group = {
268 .name = "format",
269 .attrs = iob_pmu_v3_format_attrs,
270};
271
272static const struct attribute_group iob_slow_pmu_v3_format_attr_group = {
273 .name = "format",
274 .attrs = iob_slow_pmu_v3_format_attrs,
275};
276
277static const struct attribute_group mcb_pmu_v3_format_attr_group = {
278 .name = "format",
279 .attrs = mcb_pmu_v3_format_attrs,
280};
281
282static const struct attribute_group mc_pmu_v3_format_attr_group = {
283 .name = "format",
284 .attrs = mc_pmu_v3_format_attrs,
285};
286
287
288
289
290static ssize_t xgene_pmu_event_show(struct device *dev,
291 struct device_attribute *attr, char *buf)
292{
293 struct dev_ext_attribute *eattr;
294
295 eattr = container_of(attr, struct dev_ext_attribute, attr);
296 return sprintf(buf, "config=0x%lx\n", (unsigned long) eattr->var);
297}
298
299#define XGENE_PMU_EVENT_ATTR(_name, _config) \
300 (&((struct dev_ext_attribute[]) { \
301 { .attr = __ATTR(_name, S_IRUGO, xgene_pmu_event_show, NULL), \
302 .var = (void *) _config, } \
303 })[0].attr.attr)
304
305static struct attribute *l3c_pmu_events_attrs[] = {
306 XGENE_PMU_EVENT_ATTR(cycle-count, 0x00),
307 XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01),
308 XGENE_PMU_EVENT_ATTR(read-hit, 0x02),
309 XGENE_PMU_EVENT_ATTR(read-miss, 0x03),
310 XGENE_PMU_EVENT_ATTR(write-need-replacement, 0x06),
311 XGENE_PMU_EVENT_ATTR(write-not-need-replacement, 0x07),
312 XGENE_PMU_EVENT_ATTR(tq-full, 0x08),
313 XGENE_PMU_EVENT_ATTR(ackq-full, 0x09),
314 XGENE_PMU_EVENT_ATTR(wdb-full, 0x0a),
315 XGENE_PMU_EVENT_ATTR(bank-fifo-full, 0x0b),
316 XGENE_PMU_EVENT_ATTR(odb-full, 0x0c),
317 XGENE_PMU_EVENT_ATTR(wbq-full, 0x0d),
318 XGENE_PMU_EVENT_ATTR(bank-conflict-fifo-issue, 0x0e),
319 XGENE_PMU_EVENT_ATTR(bank-fifo-issue, 0x0f),
320 NULL,
321};
322
323static struct attribute *iob_pmu_events_attrs[] = {
324 XGENE_PMU_EVENT_ATTR(cycle-count, 0x00),
325 XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01),
326 XGENE_PMU_EVENT_ATTR(axi0-read, 0x02),
327 XGENE_PMU_EVENT_ATTR(axi0-read-partial, 0x03),
328 XGENE_PMU_EVENT_ATTR(axi1-read, 0x04),
329 XGENE_PMU_EVENT_ATTR(axi1-read-partial, 0x05),
330 XGENE_PMU_EVENT_ATTR(csw-read-block, 0x06),
331 XGENE_PMU_EVENT_ATTR(csw-read-partial, 0x07),
332 XGENE_PMU_EVENT_ATTR(axi0-write, 0x10),
333 XGENE_PMU_EVENT_ATTR(axi0-write-partial, 0x11),
334 XGENE_PMU_EVENT_ATTR(axi1-write, 0x13),
335 XGENE_PMU_EVENT_ATTR(axi1-write-partial, 0x14),
336 XGENE_PMU_EVENT_ATTR(csw-inbound-dirty, 0x16),
337 NULL,
338};
339
340static struct attribute *mcb_pmu_events_attrs[] = {
341 XGENE_PMU_EVENT_ATTR(cycle-count, 0x00),
342 XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01),
343 XGENE_PMU_EVENT_ATTR(csw-read, 0x02),
344 XGENE_PMU_EVENT_ATTR(csw-write-request, 0x03),
345 XGENE_PMU_EVENT_ATTR(mcb-csw-stall, 0x04),
346 XGENE_PMU_EVENT_ATTR(cancel-read-gack, 0x05),
347 NULL,
348};
349
350static struct attribute *mc_pmu_events_attrs[] = {
351 XGENE_PMU_EVENT_ATTR(cycle-count, 0x00),
352 XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01),
353 XGENE_PMU_EVENT_ATTR(act-cmd-sent, 0x02),
354 XGENE_PMU_EVENT_ATTR(pre-cmd-sent, 0x03),
355 XGENE_PMU_EVENT_ATTR(rd-cmd-sent, 0x04),
356 XGENE_PMU_EVENT_ATTR(rda-cmd-sent, 0x05),
357 XGENE_PMU_EVENT_ATTR(wr-cmd-sent, 0x06),
358 XGENE_PMU_EVENT_ATTR(wra-cmd-sent, 0x07),
359 XGENE_PMU_EVENT_ATTR(pde-cmd-sent, 0x08),
360 XGENE_PMU_EVENT_ATTR(sre-cmd-sent, 0x09),
361 XGENE_PMU_EVENT_ATTR(prea-cmd-sent, 0x0a),
362 XGENE_PMU_EVENT_ATTR(ref-cmd-sent, 0x0b),
363 XGENE_PMU_EVENT_ATTR(rd-rda-cmd-sent, 0x0c),
364 XGENE_PMU_EVENT_ATTR(wr-wra-cmd-sent, 0x0d),
365 XGENE_PMU_EVENT_ATTR(in-rd-collision, 0x0e),
366 XGENE_PMU_EVENT_ATTR(in-wr-collision, 0x0f),
367 XGENE_PMU_EVENT_ATTR(collision-queue-not-empty, 0x10),
368 XGENE_PMU_EVENT_ATTR(collision-queue-full, 0x11),
369 XGENE_PMU_EVENT_ATTR(mcu-request, 0x12),
370 XGENE_PMU_EVENT_ATTR(mcu-rd-request, 0x13),
371 XGENE_PMU_EVENT_ATTR(mcu-hp-rd-request, 0x14),
372 XGENE_PMU_EVENT_ATTR(mcu-wr-request, 0x15),
373 XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-all, 0x16),
374 XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-cancel, 0x17),
375 XGENE_PMU_EVENT_ATTR(mcu-rd-response, 0x18),
376 XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-speculative-all, 0x19),
377 XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-speculative-cancel, 0x1a),
378 XGENE_PMU_EVENT_ATTR(mcu-wr-proceed-all, 0x1b),
379 XGENE_PMU_EVENT_ATTR(mcu-wr-proceed-cancel, 0x1c),
380 NULL,
381};
382
383static const struct attribute_group l3c_pmu_events_attr_group = {
384 .name = "events",
385 .attrs = l3c_pmu_events_attrs,
386};
387
388static const struct attribute_group iob_pmu_events_attr_group = {
389 .name = "events",
390 .attrs = iob_pmu_events_attrs,
391};
392
393static const struct attribute_group mcb_pmu_events_attr_group = {
394 .name = "events",
395 .attrs = mcb_pmu_events_attrs,
396};
397
398static const struct attribute_group mc_pmu_events_attr_group = {
399 .name = "events",
400 .attrs = mc_pmu_events_attrs,
401};
402
403static struct attribute *l3c_pmu_v3_events_attrs[] = {
404 XGENE_PMU_EVENT_ATTR(cycle-count, 0x00),
405 XGENE_PMU_EVENT_ATTR(read-hit, 0x01),
406 XGENE_PMU_EVENT_ATTR(read-miss, 0x02),
407 XGENE_PMU_EVENT_ATTR(index-flush-eviction, 0x03),
408 XGENE_PMU_EVENT_ATTR(write-caused-replacement, 0x04),
409 XGENE_PMU_EVENT_ATTR(write-not-caused-replacement, 0x05),
410 XGENE_PMU_EVENT_ATTR(clean-eviction, 0x06),
411 XGENE_PMU_EVENT_ATTR(dirty-eviction, 0x07),
412 XGENE_PMU_EVENT_ATTR(read, 0x08),
413 XGENE_PMU_EVENT_ATTR(write, 0x09),
414 XGENE_PMU_EVENT_ATTR(request, 0x0a),
415 XGENE_PMU_EVENT_ATTR(tq-bank-conflict-issue-stall, 0x0b),
416 XGENE_PMU_EVENT_ATTR(tq-full, 0x0c),
417 XGENE_PMU_EVENT_ATTR(ackq-full, 0x0d),
418 XGENE_PMU_EVENT_ATTR(wdb-full, 0x0e),
419 XGENE_PMU_EVENT_ATTR(odb-full, 0x10),
420 XGENE_PMU_EVENT_ATTR(wbq-full, 0x11),
421 XGENE_PMU_EVENT_ATTR(input-req-async-fifo-stall, 0x12),
422 XGENE_PMU_EVENT_ATTR(output-req-async-fifo-stall, 0x13),
423 XGENE_PMU_EVENT_ATTR(output-data-async-fifo-stall, 0x14),
424 XGENE_PMU_EVENT_ATTR(total-insertion, 0x15),
425 XGENE_PMU_EVENT_ATTR(sip-insertions-r-set, 0x16),
426 XGENE_PMU_EVENT_ATTR(sip-insertions-r-clear, 0x17),
427 XGENE_PMU_EVENT_ATTR(dip-insertions-r-set, 0x18),
428 XGENE_PMU_EVENT_ATTR(dip-insertions-r-clear, 0x19),
429 XGENE_PMU_EVENT_ATTR(dip-insertions-force-r-set, 0x1a),
430 XGENE_PMU_EVENT_ATTR(egression, 0x1b),
431 XGENE_PMU_EVENT_ATTR(replacement, 0x1c),
432 XGENE_PMU_EVENT_ATTR(old-replacement, 0x1d),
433 XGENE_PMU_EVENT_ATTR(young-replacement, 0x1e),
434 XGENE_PMU_EVENT_ATTR(r-set-replacement, 0x1f),
435 XGENE_PMU_EVENT_ATTR(r-clear-replacement, 0x20),
436 XGENE_PMU_EVENT_ATTR(old-r-replacement, 0x21),
437 XGENE_PMU_EVENT_ATTR(old-nr-replacement, 0x22),
438 XGENE_PMU_EVENT_ATTR(young-r-replacement, 0x23),
439 XGENE_PMU_EVENT_ATTR(young-nr-replacement, 0x24),
440 XGENE_PMU_EVENT_ATTR(bloomfilter-clearing, 0x25),
441 XGENE_PMU_EVENT_ATTR(generation-flip, 0x26),
442 XGENE_PMU_EVENT_ATTR(vcc-droop-detected, 0x27),
443 NULL,
444};
445
446static struct attribute *iob_fast_pmu_v3_events_attrs[] = {
447 XGENE_PMU_EVENT_ATTR(cycle-count, 0x00),
448 XGENE_PMU_EVENT_ATTR(pa-req-buf-alloc-all, 0x01),
449 XGENE_PMU_EVENT_ATTR(pa-req-buf-alloc-rd, 0x02),
450 XGENE_PMU_EVENT_ATTR(pa-req-buf-alloc-wr, 0x03),
451 XGENE_PMU_EVENT_ATTR(pa-all-cp-req, 0x04),
452 XGENE_PMU_EVENT_ATTR(pa-cp-blk-req, 0x05),
453 XGENE_PMU_EVENT_ATTR(pa-cp-ptl-req, 0x06),
454 XGENE_PMU_EVENT_ATTR(pa-cp-rd-req, 0x07),
455 XGENE_PMU_EVENT_ATTR(pa-cp-wr-req, 0x08),
456 XGENE_PMU_EVENT_ATTR(ba-all-req, 0x09),
457 XGENE_PMU_EVENT_ATTR(ba-rd-req, 0x0a),
458 XGENE_PMU_EVENT_ATTR(ba-wr-req, 0x0b),
459 XGENE_PMU_EVENT_ATTR(pa-rd-shared-req-issued, 0x10),
460 XGENE_PMU_EVENT_ATTR(pa-rd-exclusive-req-issued, 0x11),
461 XGENE_PMU_EVENT_ATTR(pa-wr-invalidate-req-issued-stashable, 0x12),
462 XGENE_PMU_EVENT_ATTR(pa-wr-invalidate-req-issued-nonstashable, 0x13),
463 XGENE_PMU_EVENT_ATTR(pa-wr-back-req-issued-stashable, 0x14),
464 XGENE_PMU_EVENT_ATTR(pa-wr-back-req-issued-nonstashable, 0x15),
465 XGENE_PMU_EVENT_ATTR(pa-ptl-wr-req, 0x16),
466 XGENE_PMU_EVENT_ATTR(pa-ptl-rd-req, 0x17),
467 XGENE_PMU_EVENT_ATTR(pa-wr-back-clean-data, 0x18),
468 XGENE_PMU_EVENT_ATTR(pa-wr-back-cancelled-on-SS, 0x1b),
469 XGENE_PMU_EVENT_ATTR(pa-barrier-occurrence, 0x1c),
470 XGENE_PMU_EVENT_ATTR(pa-barrier-cycles, 0x1d),
471 XGENE_PMU_EVENT_ATTR(pa-total-cp-snoops, 0x20),
472 XGENE_PMU_EVENT_ATTR(pa-rd-shared-snoop, 0x21),
473 XGENE_PMU_EVENT_ATTR(pa-rd-shared-snoop-hit, 0x22),
474 XGENE_PMU_EVENT_ATTR(pa-rd-exclusive-snoop, 0x23),
475 XGENE_PMU_EVENT_ATTR(pa-rd-exclusive-snoop-hit, 0x24),
476 XGENE_PMU_EVENT_ATTR(pa-rd-wr-invalid-snoop, 0x25),
477 XGENE_PMU_EVENT_ATTR(pa-rd-wr-invalid-snoop-hit, 0x26),
478 XGENE_PMU_EVENT_ATTR(pa-req-buffer-full, 0x28),
479 XGENE_PMU_EVENT_ATTR(cswlf-outbound-req-fifo-full, 0x29),
480 XGENE_PMU_EVENT_ATTR(cswlf-inbound-snoop-fifo-backpressure, 0x2a),
481 XGENE_PMU_EVENT_ATTR(cswlf-outbound-lack-fifo-full, 0x2b),
482 XGENE_PMU_EVENT_ATTR(cswlf-inbound-gack-fifo-backpressure, 0x2c),
483 XGENE_PMU_EVENT_ATTR(cswlf-outbound-data-fifo-full, 0x2d),
484 XGENE_PMU_EVENT_ATTR(cswlf-inbound-data-fifo-backpressure, 0x2e),
485 XGENE_PMU_EVENT_ATTR(cswlf-inbound-req-backpressure, 0x2f),
486 NULL,
487};
488
489static struct attribute *iob_slow_pmu_v3_events_attrs[] = {
490 XGENE_PMU_EVENT_ATTR(cycle-count, 0x00),
491 XGENE_PMU_EVENT_ATTR(pa-axi0-rd-req, 0x01),
492 XGENE_PMU_EVENT_ATTR(pa-axi0-wr-req, 0x02),
493 XGENE_PMU_EVENT_ATTR(pa-axi1-rd-req, 0x03),
494 XGENE_PMU_EVENT_ATTR(pa-axi1-wr-req, 0x04),
495 XGENE_PMU_EVENT_ATTR(ba-all-axi-req, 0x07),
496 XGENE_PMU_EVENT_ATTR(ba-axi-rd-req, 0x08),
497 XGENE_PMU_EVENT_ATTR(ba-axi-wr-req, 0x09),
498 XGENE_PMU_EVENT_ATTR(ba-free-list-empty, 0x10),
499 NULL,
500};
501
502static struct attribute *mcb_pmu_v3_events_attrs[] = {
503 XGENE_PMU_EVENT_ATTR(cycle-count, 0x00),
504 XGENE_PMU_EVENT_ATTR(req-receive, 0x01),
505 XGENE_PMU_EVENT_ATTR(rd-req-recv, 0x02),
506 XGENE_PMU_EVENT_ATTR(rd-req-recv-2, 0x03),
507 XGENE_PMU_EVENT_ATTR(wr-req-recv, 0x04),
508 XGENE_PMU_EVENT_ATTR(wr-req-recv-2, 0x05),
509 XGENE_PMU_EVENT_ATTR(rd-req-sent-to-mcu, 0x06),
510 XGENE_PMU_EVENT_ATTR(rd-req-sent-to-mcu-2, 0x07),
511 XGENE_PMU_EVENT_ATTR(rd-req-sent-to-spec-mcu, 0x08),
512 XGENE_PMU_EVENT_ATTR(rd-req-sent-to-spec-mcu-2, 0x09),
513 XGENE_PMU_EVENT_ATTR(glbl-ack-recv-for-rd-sent-to-spec-mcu, 0x0a),
514 XGENE_PMU_EVENT_ATTR(glbl-ack-go-recv-for-rd-sent-to-spec-mcu, 0x0b),
515 XGENE_PMU_EVENT_ATTR(glbl-ack-nogo-recv-for-rd-sent-to-spec-mcu, 0x0c),
516 XGENE_PMU_EVENT_ATTR(glbl-ack-go-recv-any-rd-req, 0x0d),
517 XGENE_PMU_EVENT_ATTR(glbl-ack-go-recv-any-rd-req-2, 0x0e),
518 XGENE_PMU_EVENT_ATTR(wr-req-sent-to-mcu, 0x0f),
519 XGENE_PMU_EVENT_ATTR(gack-recv, 0x10),
520 XGENE_PMU_EVENT_ATTR(rd-gack-recv, 0x11),
521 XGENE_PMU_EVENT_ATTR(wr-gack-recv, 0x12),
522 XGENE_PMU_EVENT_ATTR(cancel-rd-gack, 0x13),
523 XGENE_PMU_EVENT_ATTR(cancel-wr-gack, 0x14),
524 XGENE_PMU_EVENT_ATTR(mcb-csw-req-stall, 0x15),
525 XGENE_PMU_EVENT_ATTR(mcu-req-intf-blocked, 0x16),
526 XGENE_PMU_EVENT_ATTR(mcb-mcu-rd-intf-stall, 0x17),
527 XGENE_PMU_EVENT_ATTR(csw-rd-intf-blocked, 0x18),
528 XGENE_PMU_EVENT_ATTR(csw-local-ack-intf-blocked, 0x19),
529 XGENE_PMU_EVENT_ATTR(mcu-req-table-full, 0x1a),
530 XGENE_PMU_EVENT_ATTR(mcu-stat-table-full, 0x1b),
531 XGENE_PMU_EVENT_ATTR(mcu-wr-table-full, 0x1c),
532 XGENE_PMU_EVENT_ATTR(mcu-rdreceipt-resp, 0x1d),
533 XGENE_PMU_EVENT_ATTR(mcu-wrcomplete-resp, 0x1e),
534 XGENE_PMU_EVENT_ATTR(mcu-retryack-resp, 0x1f),
535 XGENE_PMU_EVENT_ATTR(mcu-pcrdgrant-resp, 0x20),
536 XGENE_PMU_EVENT_ATTR(mcu-req-from-lastload, 0x21),
537 XGENE_PMU_EVENT_ATTR(mcu-req-from-bypass, 0x22),
538 XGENE_PMU_EVENT_ATTR(volt-droop-detect, 0x23),
539 NULL,
540};
541
542static struct attribute *mc_pmu_v3_events_attrs[] = {
543 XGENE_PMU_EVENT_ATTR(cycle-count, 0x00),
544 XGENE_PMU_EVENT_ATTR(act-sent, 0x01),
545 XGENE_PMU_EVENT_ATTR(pre-sent, 0x02),
546 XGENE_PMU_EVENT_ATTR(rd-sent, 0x03),
547 XGENE_PMU_EVENT_ATTR(rda-sent, 0x04),
548 XGENE_PMU_EVENT_ATTR(wr-sent, 0x05),
549 XGENE_PMU_EVENT_ATTR(wra-sent, 0x06),
550 XGENE_PMU_EVENT_ATTR(pd-entry-vld, 0x07),
551 XGENE_PMU_EVENT_ATTR(sref-entry-vld, 0x08),
552 XGENE_PMU_EVENT_ATTR(prea-sent, 0x09),
553 XGENE_PMU_EVENT_ATTR(ref-sent, 0x0a),
554 XGENE_PMU_EVENT_ATTR(rd-rda-sent, 0x0b),
555 XGENE_PMU_EVENT_ATTR(wr-wra-sent, 0x0c),
556 XGENE_PMU_EVENT_ATTR(raw-hazard, 0x0d),
557 XGENE_PMU_EVENT_ATTR(war-hazard, 0x0e),
558 XGENE_PMU_EVENT_ATTR(waw-hazard, 0x0f),
559 XGENE_PMU_EVENT_ATTR(rar-hazard, 0x10),
560 XGENE_PMU_EVENT_ATTR(raw-war-waw-hazard, 0x11),
561 XGENE_PMU_EVENT_ATTR(hprd-lprd-wr-req-vld, 0x12),
562 XGENE_PMU_EVENT_ATTR(lprd-req-vld, 0x13),
563 XGENE_PMU_EVENT_ATTR(hprd-req-vld, 0x14),
564 XGENE_PMU_EVENT_ATTR(hprd-lprd-req-vld, 0x15),
565 XGENE_PMU_EVENT_ATTR(wr-req-vld, 0x16),
566 XGENE_PMU_EVENT_ATTR(partial-wr-req-vld, 0x17),
567 XGENE_PMU_EVENT_ATTR(rd-retry, 0x18),
568 XGENE_PMU_EVENT_ATTR(wr-retry, 0x19),
569 XGENE_PMU_EVENT_ATTR(retry-gnt, 0x1a),
570 XGENE_PMU_EVENT_ATTR(rank-change, 0x1b),
571 XGENE_PMU_EVENT_ATTR(dir-change, 0x1c),
572 XGENE_PMU_EVENT_ATTR(rank-dir-change, 0x1d),
573 XGENE_PMU_EVENT_ATTR(rank-active, 0x1e),
574 XGENE_PMU_EVENT_ATTR(rank-idle, 0x1f),
575 XGENE_PMU_EVENT_ATTR(rank-pd, 0x20),
576 XGENE_PMU_EVENT_ATTR(rank-sref, 0x21),
577 XGENE_PMU_EVENT_ATTR(queue-fill-gt-thresh, 0x22),
578 XGENE_PMU_EVENT_ATTR(queue-rds-gt-thresh, 0x23),
579 XGENE_PMU_EVENT_ATTR(queue-wrs-gt-thresh, 0x24),
580 XGENE_PMU_EVENT_ATTR(phy-updt-complt, 0x25),
581 XGENE_PMU_EVENT_ATTR(tz-fail, 0x26),
582 XGENE_PMU_EVENT_ATTR(dram-errc, 0x27),
583 XGENE_PMU_EVENT_ATTR(dram-errd, 0x28),
584 XGENE_PMU_EVENT_ATTR(rd-enq, 0x29),
585 XGENE_PMU_EVENT_ATTR(wr-enq, 0x2a),
586 XGENE_PMU_EVENT_ATTR(tmac-limit-reached, 0x2b),
587 XGENE_PMU_EVENT_ATTR(tmaw-tracker-full, 0x2c),
588 NULL,
589};
590
591static const struct attribute_group l3c_pmu_v3_events_attr_group = {
592 .name = "events",
593 .attrs = l3c_pmu_v3_events_attrs,
594};
595
596static const struct attribute_group iob_fast_pmu_v3_events_attr_group = {
597 .name = "events",
598 .attrs = iob_fast_pmu_v3_events_attrs,
599};
600
601static const struct attribute_group iob_slow_pmu_v3_events_attr_group = {
602 .name = "events",
603 .attrs = iob_slow_pmu_v3_events_attrs,
604};
605
606static const struct attribute_group mcb_pmu_v3_events_attr_group = {
607 .name = "events",
608 .attrs = mcb_pmu_v3_events_attrs,
609};
610
611static const struct attribute_group mc_pmu_v3_events_attr_group = {
612 .name = "events",
613 .attrs = mc_pmu_v3_events_attrs,
614};
615
616
617
618
619static ssize_t xgene_pmu_cpumask_show(struct device *dev,
620 struct device_attribute *attr, char *buf)
621{
622 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(dev_get_drvdata(dev));
623
624 return cpumap_print_to_pagebuf(true, buf, &pmu_dev->parent->cpu);
625}
626
627static DEVICE_ATTR(cpumask, S_IRUGO, xgene_pmu_cpumask_show, NULL);
628
629static struct attribute *xgene_pmu_cpumask_attrs[] = {
630 &dev_attr_cpumask.attr,
631 NULL,
632};
633
634static const struct attribute_group pmu_cpumask_attr_group = {
635 .attrs = xgene_pmu_cpumask_attrs,
636};
637
638
639
640
641static const struct attribute_group *l3c_pmu_attr_groups[] = {
642 &l3c_pmu_format_attr_group,
643 &pmu_cpumask_attr_group,
644 &l3c_pmu_events_attr_group,
645 NULL
646};
647
648static const struct attribute_group *iob_pmu_attr_groups[] = {
649 &iob_pmu_format_attr_group,
650 &pmu_cpumask_attr_group,
651 &iob_pmu_events_attr_group,
652 NULL
653};
654
655static const struct attribute_group *mcb_pmu_attr_groups[] = {
656 &mcb_pmu_format_attr_group,
657 &pmu_cpumask_attr_group,
658 &mcb_pmu_events_attr_group,
659 NULL
660};
661
662static const struct attribute_group *mc_pmu_attr_groups[] = {
663 &mc_pmu_format_attr_group,
664 &pmu_cpumask_attr_group,
665 &mc_pmu_events_attr_group,
666 NULL
667};
668
669
670
671
672static const struct attribute_group *l3c_pmu_v3_attr_groups[] = {
673 &l3c_pmu_v3_format_attr_group,
674 &pmu_cpumask_attr_group,
675 &l3c_pmu_v3_events_attr_group,
676 NULL
677};
678
679static const struct attribute_group *iob_fast_pmu_v3_attr_groups[] = {
680 &iob_pmu_v3_format_attr_group,
681 &pmu_cpumask_attr_group,
682 &iob_fast_pmu_v3_events_attr_group,
683 NULL
684};
685
686static const struct attribute_group *iob_slow_pmu_v3_attr_groups[] = {
687 &iob_slow_pmu_v3_format_attr_group,
688 &pmu_cpumask_attr_group,
689 &iob_slow_pmu_v3_events_attr_group,
690 NULL
691};
692
693static const struct attribute_group *mcb_pmu_v3_attr_groups[] = {
694 &mcb_pmu_v3_format_attr_group,
695 &pmu_cpumask_attr_group,
696 &mcb_pmu_v3_events_attr_group,
697 NULL
698};
699
700static const struct attribute_group *mc_pmu_v3_attr_groups[] = {
701 &mc_pmu_v3_format_attr_group,
702 &pmu_cpumask_attr_group,
703 &mc_pmu_v3_events_attr_group,
704 NULL
705};
706
707static int get_next_avail_cntr(struct xgene_pmu_dev *pmu_dev)
708{
709 int cntr;
710
711 cntr = find_first_zero_bit(pmu_dev->cntr_assign_mask,
712 pmu_dev->max_counters);
713 if (cntr == pmu_dev->max_counters)
714 return -ENOSPC;
715 set_bit(cntr, pmu_dev->cntr_assign_mask);
716
717 return cntr;
718}
719
720static void clear_avail_cntr(struct xgene_pmu_dev *pmu_dev, int cntr)
721{
722 clear_bit(cntr, pmu_dev->cntr_assign_mask);
723}
724
725static inline void xgene_pmu_mask_int(struct xgene_pmu *xgene_pmu)
726{
727 writel(PCPPMU_INTENMASK, xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG);
728}
729
730static inline void xgene_pmu_v3_mask_int(struct xgene_pmu *xgene_pmu)
731{
732 writel(PCPPMU_V3_INTENMASK, xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG);
733}
734
735static inline void xgene_pmu_unmask_int(struct xgene_pmu *xgene_pmu)
736{
737 writel(PCPPMU_INTCLRMASK, xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG);
738}
739
740static inline void xgene_pmu_v3_unmask_int(struct xgene_pmu *xgene_pmu)
741{
742 writel(PCPPMU_V3_INTCLRMASK,
743 xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG);
744}
745
746static inline u64 xgene_pmu_read_counter32(struct xgene_pmu_dev *pmu_dev,
747 int idx)
748{
749 return readl(pmu_dev->inf->csr + PMU_PMEVCNTR0 + (4 * idx));
750}
751
752static inline u64 xgene_pmu_read_counter64(struct xgene_pmu_dev *pmu_dev,
753 int idx)
754{
755 u32 lo, hi;
756
757
758
759
760
761
762
763 do {
764 hi = xgene_pmu_read_counter32(pmu_dev, 2 * idx + 1);
765 lo = xgene_pmu_read_counter32(pmu_dev, 2 * idx);
766 } while (hi != xgene_pmu_read_counter32(pmu_dev, 2 * idx + 1));
767
768 return (((u64)hi << 32) | lo);
769}
770
771static inline void
772xgene_pmu_write_counter32(struct xgene_pmu_dev *pmu_dev, int idx, u64 val)
773{
774 writel(val, pmu_dev->inf->csr + PMU_PMEVCNTR0 + (4 * idx));
775}
776
777static inline void
778xgene_pmu_write_counter64(struct xgene_pmu_dev *pmu_dev, int idx, u64 val)
779{
780 u32 cnt_lo, cnt_hi;
781
782 cnt_hi = upper_32_bits(val);
783 cnt_lo = lower_32_bits(val);
784
785
786 xgene_pmu_write_counter32(pmu_dev, 2 * idx, cnt_lo);
787 xgene_pmu_write_counter32(pmu_dev, 2 * idx + 1, cnt_hi);
788}
789
790static inline void
791xgene_pmu_write_evttype(struct xgene_pmu_dev *pmu_dev, int idx, u32 val)
792{
793 writel(val, pmu_dev->inf->csr + PMU_PMEVTYPER0 + (4 * idx));
794}
795
796static inline void
797xgene_pmu_write_agentmsk(struct xgene_pmu_dev *pmu_dev, u32 val)
798{
799 writel(val, pmu_dev->inf->csr + PMU_PMAMR0);
800}
801
802static inline void
803xgene_pmu_v3_write_agentmsk(struct xgene_pmu_dev *pmu_dev, u32 val) { }
804
805static inline void
806xgene_pmu_write_agent1msk(struct xgene_pmu_dev *pmu_dev, u32 val)
807{
808 writel(val, pmu_dev->inf->csr + PMU_PMAMR1);
809}
810
811static inline void
812xgene_pmu_v3_write_agent1msk(struct xgene_pmu_dev *pmu_dev, u32 val) { }
813
814static inline void
815xgene_pmu_enable_counter(struct xgene_pmu_dev *pmu_dev, int idx)
816{
817 u32 val;
818
819 val = readl(pmu_dev->inf->csr + PMU_PMCNTENSET);
820 val |= 1 << idx;
821 writel(val, pmu_dev->inf->csr + PMU_PMCNTENSET);
822}
823
824static inline void
825xgene_pmu_disable_counter(struct xgene_pmu_dev *pmu_dev, int idx)
826{
827 u32 val;
828
829 val = readl(pmu_dev->inf->csr + PMU_PMCNTENCLR);
830 val |= 1 << idx;
831 writel(val, pmu_dev->inf->csr + PMU_PMCNTENCLR);
832}
833
834static inline void
835xgene_pmu_enable_counter_int(struct xgene_pmu_dev *pmu_dev, int idx)
836{
837 u32 val;
838
839 val = readl(pmu_dev->inf->csr + PMU_PMINTENSET);
840 val |= 1 << idx;
841 writel(val, pmu_dev->inf->csr + PMU_PMINTENSET);
842}
843
844static inline void
845xgene_pmu_disable_counter_int(struct xgene_pmu_dev *pmu_dev, int idx)
846{
847 u32 val;
848
849 val = readl(pmu_dev->inf->csr + PMU_PMINTENCLR);
850 val |= 1 << idx;
851 writel(val, pmu_dev->inf->csr + PMU_PMINTENCLR);
852}
853
854static inline void xgene_pmu_reset_counters(struct xgene_pmu_dev *pmu_dev)
855{
856 u32 val;
857
858 val = readl(pmu_dev->inf->csr + PMU_PMCR);
859 val |= PMU_PMCR_P;
860 writel(val, pmu_dev->inf->csr + PMU_PMCR);
861}
862
863static inline void xgene_pmu_start_counters(struct xgene_pmu_dev *pmu_dev)
864{
865 u32 val;
866
867 val = readl(pmu_dev->inf->csr + PMU_PMCR);
868 val |= PMU_PMCR_E;
869 writel(val, pmu_dev->inf->csr + PMU_PMCR);
870}
871
872static inline void xgene_pmu_stop_counters(struct xgene_pmu_dev *pmu_dev)
873{
874 u32 val;
875
876 val = readl(pmu_dev->inf->csr + PMU_PMCR);
877 val &= ~PMU_PMCR_E;
878 writel(val, pmu_dev->inf->csr + PMU_PMCR);
879}
880
881static void xgene_perf_pmu_enable(struct pmu *pmu)
882{
883 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(pmu);
884 struct xgene_pmu *xgene_pmu = pmu_dev->parent;
885 int enabled = bitmap_weight(pmu_dev->cntr_assign_mask,
886 pmu_dev->max_counters);
887
888 if (!enabled)
889 return;
890
891 xgene_pmu->ops->start_counters(pmu_dev);
892}
893
894static void xgene_perf_pmu_disable(struct pmu *pmu)
895{
896 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(pmu);
897 struct xgene_pmu *xgene_pmu = pmu_dev->parent;
898
899 xgene_pmu->ops->stop_counters(pmu_dev);
900}
901
902static int xgene_perf_event_init(struct perf_event *event)
903{
904 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu);
905 struct hw_perf_event *hw = &event->hw;
906 struct perf_event *sibling;
907
908
909 if (event->attr.type != event->pmu->type)
910 return -ENOENT;
911
912
913
914
915
916
917 if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK)
918 return -EINVAL;
919
920
921 if (event->attr.exclude_user || event->attr.exclude_kernel ||
922 event->attr.exclude_host || event->attr.exclude_guest)
923 return -EINVAL;
924
925 if (event->cpu < 0)
926 return -EINVAL;
927
928
929
930
931
932
933
934
935
936 event->cpu = cpumask_first(&pmu_dev->parent->cpu);
937
938 hw->config = event->attr.config;
939
940
941
942
943
944
945 hw->config_base = event->attr.config1;
946
947
948
949
950
951 if (event->group_leader->pmu != event->pmu &&
952 !is_software_event(event->group_leader))
953 return -EINVAL;
954
955 for_each_sibling_event(sibling, event->group_leader) {
956 if (sibling->pmu != event->pmu &&
957 !is_software_event(sibling))
958 return -EINVAL;
959 }
960
961 return 0;
962}
963
964static void xgene_perf_enable_event(struct perf_event *event)
965{
966 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu);
967 struct xgene_pmu *xgene_pmu = pmu_dev->parent;
968
969 xgene_pmu->ops->write_evttype(pmu_dev, GET_CNTR(event),
970 GET_EVENTID(event));
971 xgene_pmu->ops->write_agentmsk(pmu_dev, ~((u32)GET_AGENTID(event)));
972 if (pmu_dev->inf->type == PMU_TYPE_IOB)
973 xgene_pmu->ops->write_agent1msk(pmu_dev,
974 ~((u32)GET_AGENT1ID(event)));
975
976 xgene_pmu->ops->enable_counter(pmu_dev, GET_CNTR(event));
977 xgene_pmu->ops->enable_counter_int(pmu_dev, GET_CNTR(event));
978}
979
980static void xgene_perf_disable_event(struct perf_event *event)
981{
982 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu);
983 struct xgene_pmu *xgene_pmu = pmu_dev->parent;
984
985 xgene_pmu->ops->disable_counter(pmu_dev, GET_CNTR(event));
986 xgene_pmu->ops->disable_counter_int(pmu_dev, GET_CNTR(event));
987}
988
989static void xgene_perf_event_set_period(struct perf_event *event)
990{
991 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu);
992 struct xgene_pmu *xgene_pmu = pmu_dev->parent;
993 struct hw_perf_event *hw = &event->hw;
994
995
996
997
998
999
1000
1001 u64 val = 1ULL << 31;
1002
1003 local64_set(&hw->prev_count, val);
1004 xgene_pmu->ops->write_counter(pmu_dev, hw->idx, val);
1005}
1006
1007static void xgene_perf_event_update(struct perf_event *event)
1008{
1009 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu);
1010 struct xgene_pmu *xgene_pmu = pmu_dev->parent;
1011 struct hw_perf_event *hw = &event->hw;
1012 u64 delta, prev_raw_count, new_raw_count;
1013
1014again:
1015 prev_raw_count = local64_read(&hw->prev_count);
1016 new_raw_count = xgene_pmu->ops->read_counter(pmu_dev, GET_CNTR(event));
1017
1018 if (local64_cmpxchg(&hw->prev_count, prev_raw_count,
1019 new_raw_count) != prev_raw_count)
1020 goto again;
1021
1022 delta = (new_raw_count - prev_raw_count) & pmu_dev->max_period;
1023
1024 local64_add(delta, &event->count);
1025}
1026
1027static void xgene_perf_read(struct perf_event *event)
1028{
1029 xgene_perf_event_update(event);
1030}
1031
1032static void xgene_perf_start(struct perf_event *event, int flags)
1033{
1034 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu);
1035 struct xgene_pmu *xgene_pmu = pmu_dev->parent;
1036 struct hw_perf_event *hw = &event->hw;
1037
1038 if (WARN_ON_ONCE(!(hw->state & PERF_HES_STOPPED)))
1039 return;
1040
1041 WARN_ON_ONCE(!(hw->state & PERF_HES_UPTODATE));
1042 hw->state = 0;
1043
1044 xgene_perf_event_set_period(event);
1045
1046 if (flags & PERF_EF_RELOAD) {
1047 u64 prev_raw_count = local64_read(&hw->prev_count);
1048
1049 xgene_pmu->ops->write_counter(pmu_dev, GET_CNTR(event),
1050 prev_raw_count);
1051 }
1052
1053 xgene_perf_enable_event(event);
1054 perf_event_update_userpage(event);
1055}
1056
1057static void xgene_perf_stop(struct perf_event *event, int flags)
1058{
1059 struct hw_perf_event *hw = &event->hw;
1060 u64 config;
1061
1062 if (hw->state & PERF_HES_UPTODATE)
1063 return;
1064
1065 xgene_perf_disable_event(event);
1066 WARN_ON_ONCE(hw->state & PERF_HES_STOPPED);
1067 hw->state |= PERF_HES_STOPPED;
1068
1069 if (hw->state & PERF_HES_UPTODATE)
1070 return;
1071
1072 config = hw->config;
1073 xgene_perf_read(event);
1074 hw->state |= PERF_HES_UPTODATE;
1075}
1076
1077static int xgene_perf_add(struct perf_event *event, int flags)
1078{
1079 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu);
1080 struct hw_perf_event *hw = &event->hw;
1081
1082 hw->state = PERF_HES_UPTODATE | PERF_HES_STOPPED;
1083
1084
1085 hw->idx = get_next_avail_cntr(pmu_dev);
1086 if (hw->idx < 0)
1087 return -EAGAIN;
1088
1089
1090 pmu_dev->pmu_counter_event[hw->idx] = event;
1091
1092 if (flags & PERF_EF_START)
1093 xgene_perf_start(event, PERF_EF_RELOAD);
1094
1095 return 0;
1096}
1097
1098static void xgene_perf_del(struct perf_event *event, int flags)
1099{
1100 struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu);
1101 struct hw_perf_event *hw = &event->hw;
1102
1103 xgene_perf_stop(event, PERF_EF_UPDATE);
1104
1105
1106 clear_avail_cntr(pmu_dev, GET_CNTR(event));
1107
1108 perf_event_update_userpage(event);
1109 pmu_dev->pmu_counter_event[hw->idx] = NULL;
1110}
1111
1112static int xgene_init_perf(struct xgene_pmu_dev *pmu_dev, char *name)
1113{
1114 struct xgene_pmu *xgene_pmu;
1115
1116 if (pmu_dev->parent->version == PCP_PMU_V3)
1117 pmu_dev->max_period = PMU_V3_CNT_MAX_PERIOD;
1118 else
1119 pmu_dev->max_period = PMU_CNT_MAX_PERIOD;
1120
1121 xgene_pmu = pmu_dev->parent;
1122 if (xgene_pmu->version == PCP_PMU_V1)
1123 pmu_dev->max_counters = 1;
1124 else
1125 pmu_dev->max_counters = PMU_MAX_COUNTERS;
1126
1127
1128 pmu_dev->pmu = (struct pmu) {
1129 .attr_groups = pmu_dev->attr_groups,
1130 .task_ctx_nr = perf_invalid_context,
1131 .pmu_enable = xgene_perf_pmu_enable,
1132 .pmu_disable = xgene_perf_pmu_disable,
1133 .event_init = xgene_perf_event_init,
1134 .add = xgene_perf_add,
1135 .del = xgene_perf_del,
1136 .start = xgene_perf_start,
1137 .stop = xgene_perf_stop,
1138 .read = xgene_perf_read,
1139 };
1140
1141
1142 xgene_pmu->ops->stop_counters(pmu_dev);
1143 xgene_pmu->ops->reset_counters(pmu_dev);
1144
1145 return perf_pmu_register(&pmu_dev->pmu, name, -1);
1146}
1147
1148static int
1149xgene_pmu_dev_add(struct xgene_pmu *xgene_pmu, struct xgene_pmu_dev_ctx *ctx)
1150{
1151 struct device *dev = xgene_pmu->dev;
1152 struct xgene_pmu_dev *pmu;
1153
1154 pmu = devm_kzalloc(dev, sizeof(*pmu), GFP_KERNEL);
1155 if (!pmu)
1156 return -ENOMEM;
1157 pmu->parent = xgene_pmu;
1158 pmu->inf = &ctx->inf;
1159 ctx->pmu_dev = pmu;
1160
1161 switch (pmu->inf->type) {
1162 case PMU_TYPE_L3C:
1163 if (!(xgene_pmu->l3c_active_mask & pmu->inf->enable_mask))
1164 return -ENODEV;
1165 if (xgene_pmu->version == PCP_PMU_V3)
1166 pmu->attr_groups = l3c_pmu_v3_attr_groups;
1167 else
1168 pmu->attr_groups = l3c_pmu_attr_groups;
1169 break;
1170 case PMU_TYPE_IOB:
1171 if (xgene_pmu->version == PCP_PMU_V3)
1172 pmu->attr_groups = iob_fast_pmu_v3_attr_groups;
1173 else
1174 pmu->attr_groups = iob_pmu_attr_groups;
1175 break;
1176 case PMU_TYPE_IOB_SLOW:
1177 if (xgene_pmu->version == PCP_PMU_V3)
1178 pmu->attr_groups = iob_slow_pmu_v3_attr_groups;
1179 break;
1180 case PMU_TYPE_MCB:
1181 if (!(xgene_pmu->mcb_active_mask & pmu->inf->enable_mask))
1182 return -ENODEV;
1183 if (xgene_pmu->version == PCP_PMU_V3)
1184 pmu->attr_groups = mcb_pmu_v3_attr_groups;
1185 else
1186 pmu->attr_groups = mcb_pmu_attr_groups;
1187 break;
1188 case PMU_TYPE_MC:
1189 if (!(xgene_pmu->mc_active_mask & pmu->inf->enable_mask))
1190 return -ENODEV;
1191 if (xgene_pmu->version == PCP_PMU_V3)
1192 pmu->attr_groups = mc_pmu_v3_attr_groups;
1193 else
1194 pmu->attr_groups = mc_pmu_attr_groups;
1195 break;
1196 default:
1197 return -EINVAL;
1198 }
1199
1200 if (xgene_init_perf(pmu, ctx->name)) {
1201 dev_err(dev, "%s PMU: Failed to init perf driver\n", ctx->name);
1202 return -ENODEV;
1203 }
1204
1205 dev_info(dev, "%s PMU registered\n", ctx->name);
1206
1207 return 0;
1208}
1209
1210static void _xgene_pmu_isr(int irq, struct xgene_pmu_dev *pmu_dev)
1211{
1212 struct xgene_pmu *xgene_pmu = pmu_dev->parent;
1213 void __iomem *csr = pmu_dev->inf->csr;
1214 u32 pmovsr;
1215 int idx;
1216
1217 xgene_pmu->ops->stop_counters(pmu_dev);
1218
1219 if (xgene_pmu->version == PCP_PMU_V3)
1220 pmovsr = readl(csr + PMU_PMOVSSET) & PMU_OVERFLOW_MASK;
1221 else
1222 pmovsr = readl(csr + PMU_PMOVSR) & PMU_OVERFLOW_MASK;
1223
1224 if (!pmovsr)
1225 goto out;
1226
1227
1228 if (xgene_pmu->version == PCP_PMU_V1)
1229 writel(0x0, csr + PMU_PMOVSR);
1230 else if (xgene_pmu->version == PCP_PMU_V2)
1231 writel(pmovsr, csr + PMU_PMOVSR);
1232 else
1233 writel(pmovsr, csr + PMU_PMOVSCLR);
1234
1235 for (idx = 0; idx < PMU_MAX_COUNTERS; idx++) {
1236 struct perf_event *event = pmu_dev->pmu_counter_event[idx];
1237 int overflowed = pmovsr & BIT(idx);
1238
1239
1240 if (!event || !overflowed)
1241 continue;
1242 xgene_perf_event_update(event);
1243 xgene_perf_event_set_period(event);
1244 }
1245
1246out:
1247 xgene_pmu->ops->start_counters(pmu_dev);
1248}
1249
1250static irqreturn_t xgene_pmu_isr(int irq, void *dev_id)
1251{
1252 u32 intr_mcu, intr_mcb, intr_l3c, intr_iob;
1253 struct xgene_pmu_dev_ctx *ctx;
1254 struct xgene_pmu *xgene_pmu = dev_id;
1255 unsigned long flags;
1256 u32 val;
1257
1258 raw_spin_lock_irqsave(&xgene_pmu->lock, flags);
1259
1260
1261 val = readl(xgene_pmu->pcppmu_csr + PCPPMU_INTSTATUS_REG);
1262 if (xgene_pmu->version == PCP_PMU_V3) {
1263 intr_mcu = PCPPMU_V3_INT_MCU;
1264 intr_mcb = PCPPMU_V3_INT_MCB;
1265 intr_l3c = PCPPMU_V3_INT_L3C;
1266 intr_iob = PCPPMU_V3_INT_IOB;
1267 } else {
1268 intr_mcu = PCPPMU_INT_MCU;
1269 intr_mcb = PCPPMU_INT_MCB;
1270 intr_l3c = PCPPMU_INT_L3C;
1271 intr_iob = PCPPMU_INT_IOB;
1272 }
1273 if (val & intr_mcu) {
1274 list_for_each_entry(ctx, &xgene_pmu->mcpmus, next) {
1275 _xgene_pmu_isr(irq, ctx->pmu_dev);
1276 }
1277 }
1278 if (val & intr_mcb) {
1279 list_for_each_entry(ctx, &xgene_pmu->mcbpmus, next) {
1280 _xgene_pmu_isr(irq, ctx->pmu_dev);
1281 }
1282 }
1283 if (val & intr_l3c) {
1284 list_for_each_entry(ctx, &xgene_pmu->l3cpmus, next) {
1285 _xgene_pmu_isr(irq, ctx->pmu_dev);
1286 }
1287 }
1288 if (val & intr_iob) {
1289 list_for_each_entry(ctx, &xgene_pmu->iobpmus, next) {
1290 _xgene_pmu_isr(irq, ctx->pmu_dev);
1291 }
1292 }
1293
1294 raw_spin_unlock_irqrestore(&xgene_pmu->lock, flags);
1295
1296 return IRQ_HANDLED;
1297}
1298
1299static int acpi_pmu_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu,
1300 struct platform_device *pdev)
1301{
1302 void __iomem *csw_csr, *mcba_csr, *mcbb_csr;
1303 struct resource *res;
1304 unsigned int reg;
1305
1306 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1307 csw_csr = devm_ioremap_resource(&pdev->dev, res);
1308 if (IS_ERR(csw_csr)) {
1309 dev_err(&pdev->dev, "ioremap failed for CSW CSR resource\n");
1310 return PTR_ERR(csw_csr);
1311 }
1312
1313 res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
1314 mcba_csr = devm_ioremap_resource(&pdev->dev, res);
1315 if (IS_ERR(mcba_csr)) {
1316 dev_err(&pdev->dev, "ioremap failed for MCBA CSR resource\n");
1317 return PTR_ERR(mcba_csr);
1318 }
1319
1320 res = platform_get_resource(pdev, IORESOURCE_MEM, 3);
1321 mcbb_csr = devm_ioremap_resource(&pdev->dev, res);
1322 if (IS_ERR(mcbb_csr)) {
1323 dev_err(&pdev->dev, "ioremap failed for MCBB CSR resource\n");
1324 return PTR_ERR(mcbb_csr);
1325 }
1326
1327 xgene_pmu->l3c_active_mask = 0x1;
1328
1329 reg = readl(csw_csr + CSW_CSWCR);
1330 if (reg & CSW_CSWCR_DUALMCB_MASK) {
1331
1332 xgene_pmu->mcb_active_mask = 0x3;
1333
1334 reg = readl(mcbb_csr + CSW_CSWCR);
1335 xgene_pmu->mc_active_mask =
1336 (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0xF : 0x5;
1337 } else {
1338
1339 xgene_pmu->mcb_active_mask = 0x1;
1340
1341 reg = readl(mcba_csr + CSW_CSWCR);
1342 xgene_pmu->mc_active_mask =
1343 (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0x3 : 0x1;
1344 }
1345
1346 return 0;
1347}
1348
1349static int acpi_pmu_v3_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu,
1350 struct platform_device *pdev)
1351{
1352 void __iomem *csw_csr;
1353 struct resource *res;
1354 unsigned int reg;
1355 u32 mcb0routing;
1356 u32 mcb1routing;
1357
1358 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1359 csw_csr = devm_ioremap_resource(&pdev->dev, res);
1360 if (IS_ERR(csw_csr)) {
1361 dev_err(&pdev->dev, "ioremap failed for CSW CSR resource\n");
1362 return PTR_ERR(csw_csr);
1363 }
1364
1365 reg = readl(csw_csr + CSW_CSWCR);
1366 mcb0routing = CSW_CSWCR_MCB0_ROUTING(reg);
1367 mcb1routing = CSW_CSWCR_MCB1_ROUTING(reg);
1368 if (reg & CSW_CSWCR_DUALMCB_MASK) {
1369
1370 xgene_pmu->mcb_active_mask = 0x3;
1371
1372 xgene_pmu->l3c_active_mask = 0xFF;
1373
1374 if ((mcb0routing == 0x2) && (mcb1routing == 0x2))
1375 xgene_pmu->mc_active_mask = 0xFF;
1376 else if ((mcb0routing == 0x1) && (mcb1routing == 0x1))
1377 xgene_pmu->mc_active_mask = 0x33;
1378 else
1379 xgene_pmu->mc_active_mask = 0x11;
1380 } else {
1381
1382 xgene_pmu->mcb_active_mask = 0x1;
1383
1384 xgene_pmu->l3c_active_mask = 0x0F;
1385
1386 if (mcb0routing == 0x2)
1387 xgene_pmu->mc_active_mask = 0x0F;
1388 else if (mcb0routing == 0x1)
1389 xgene_pmu->mc_active_mask = 0x03;
1390 else
1391 xgene_pmu->mc_active_mask = 0x01;
1392 }
1393
1394 return 0;
1395}
1396
1397static int fdt_pmu_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu,
1398 struct platform_device *pdev)
1399{
1400 struct regmap *csw_map, *mcba_map, *mcbb_map;
1401 struct device_node *np = pdev->dev.of_node;
1402 unsigned int reg;
1403
1404 csw_map = syscon_regmap_lookup_by_phandle(np, "regmap-csw");
1405 if (IS_ERR(csw_map)) {
1406 dev_err(&pdev->dev, "unable to get syscon regmap csw\n");
1407 return PTR_ERR(csw_map);
1408 }
1409
1410 mcba_map = syscon_regmap_lookup_by_phandle(np, "regmap-mcba");
1411 if (IS_ERR(mcba_map)) {
1412 dev_err(&pdev->dev, "unable to get syscon regmap mcba\n");
1413 return PTR_ERR(mcba_map);
1414 }
1415
1416 mcbb_map = syscon_regmap_lookup_by_phandle(np, "regmap-mcbb");
1417 if (IS_ERR(mcbb_map)) {
1418 dev_err(&pdev->dev, "unable to get syscon regmap mcbb\n");
1419 return PTR_ERR(mcbb_map);
1420 }
1421
1422 xgene_pmu->l3c_active_mask = 0x1;
1423 if (regmap_read(csw_map, CSW_CSWCR, ®))
1424 return -EINVAL;
1425
1426 if (reg & CSW_CSWCR_DUALMCB_MASK) {
1427
1428 xgene_pmu->mcb_active_mask = 0x3;
1429
1430 if (regmap_read(mcbb_map, MCBADDRMR, ®))
1431 return 0;
1432 xgene_pmu->mc_active_mask =
1433 (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0xF : 0x5;
1434 } else {
1435
1436 xgene_pmu->mcb_active_mask = 0x1;
1437
1438 if (regmap_read(mcba_map, MCBADDRMR, ®))
1439 return 0;
1440 xgene_pmu->mc_active_mask =
1441 (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0x3 : 0x1;
1442 }
1443
1444 return 0;
1445}
1446
1447static int xgene_pmu_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu,
1448 struct platform_device *pdev)
1449{
1450 if (has_acpi_companion(&pdev->dev)) {
1451 if (xgene_pmu->version == PCP_PMU_V3)
1452 return acpi_pmu_v3_probe_active_mcb_mcu_l3c(xgene_pmu,
1453 pdev);
1454 else
1455 return acpi_pmu_probe_active_mcb_mcu_l3c(xgene_pmu,
1456 pdev);
1457 }
1458 return fdt_pmu_probe_active_mcb_mcu_l3c(xgene_pmu, pdev);
1459}
1460
1461static char *xgene_pmu_dev_name(struct device *dev, u32 type, int id)
1462{
1463 switch (type) {
1464 case PMU_TYPE_L3C:
1465 return devm_kasprintf(dev, GFP_KERNEL, "l3c%d", id);
1466 case PMU_TYPE_IOB:
1467 return devm_kasprintf(dev, GFP_KERNEL, "iob%d", id);
1468 case PMU_TYPE_IOB_SLOW:
1469 return devm_kasprintf(dev, GFP_KERNEL, "iob_slow%d", id);
1470 case PMU_TYPE_MCB:
1471 return devm_kasprintf(dev, GFP_KERNEL, "mcb%d", id);
1472 case PMU_TYPE_MC:
1473 return devm_kasprintf(dev, GFP_KERNEL, "mc%d", id);
1474 default:
1475 return devm_kasprintf(dev, GFP_KERNEL, "unknown");
1476 }
1477}
1478
1479#if defined(CONFIG_ACPI)
1480static int acpi_pmu_dev_add_resource(struct acpi_resource *ares, void *data)
1481{
1482 struct resource *res = data;
1483
1484 if (ares->type == ACPI_RESOURCE_TYPE_FIXED_MEMORY32)
1485 acpi_dev_resource_memory(ares, res);
1486
1487
1488 return 1;
1489}
1490
1491static struct
1492xgene_pmu_dev_ctx *acpi_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu,
1493 struct acpi_device *adev, u32 type)
1494{
1495 struct device *dev = xgene_pmu->dev;
1496 struct list_head resource_list;
1497 struct xgene_pmu_dev_ctx *ctx;
1498 const union acpi_object *obj;
1499 struct hw_pmu_info *inf;
1500 void __iomem *dev_csr;
1501 struct resource res;
1502 int enable_bit;
1503 int rc;
1504
1505 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
1506 if (!ctx)
1507 return NULL;
1508
1509 INIT_LIST_HEAD(&resource_list);
1510 rc = acpi_dev_get_resources(adev, &resource_list,
1511 acpi_pmu_dev_add_resource, &res);
1512 acpi_dev_free_resource_list(&resource_list);
1513 if (rc < 0) {
1514 dev_err(dev, "PMU type %d: No resource address found\n", type);
1515 return NULL;
1516 }
1517
1518 dev_csr = devm_ioremap_resource(dev, &res);
1519 if (IS_ERR(dev_csr)) {
1520 dev_err(dev, "PMU type %d: Fail to map resource\n", type);
1521 return NULL;
1522 }
1523
1524
1525 rc = acpi_dev_get_property(adev, "enable-bit-index",
1526 ACPI_TYPE_INTEGER, &obj);
1527 if (rc < 0)
1528 enable_bit = 0;
1529 else
1530 enable_bit = (int) obj->integer.value;
1531
1532 ctx->name = xgene_pmu_dev_name(dev, type, enable_bit);
1533 if (!ctx->name) {
1534 dev_err(dev, "PMU type %d: Fail to get device name\n", type);
1535 return NULL;
1536 }
1537 inf = &ctx->inf;
1538 inf->type = type;
1539 inf->csr = dev_csr;
1540 inf->enable_mask = 1 << enable_bit;
1541
1542 return ctx;
1543}
1544
1545static const struct acpi_device_id xgene_pmu_acpi_type_match[] = {
1546 {"APMC0D5D", PMU_TYPE_L3C},
1547 {"APMC0D5E", PMU_TYPE_IOB},
1548 {"APMC0D5F", PMU_TYPE_MCB},
1549 {"APMC0D60", PMU_TYPE_MC},
1550 {"APMC0D84", PMU_TYPE_L3C},
1551 {"APMC0D85", PMU_TYPE_IOB},
1552 {"APMC0D86", PMU_TYPE_IOB_SLOW},
1553 {"APMC0D87", PMU_TYPE_MCB},
1554 {"APMC0D88", PMU_TYPE_MC},
1555 {},
1556};
1557
1558static const struct acpi_device_id *xgene_pmu_acpi_match_type(
1559 const struct acpi_device_id *ids,
1560 struct acpi_device *adev)
1561{
1562 const struct acpi_device_id *match_id = NULL;
1563 const struct acpi_device_id *id;
1564
1565 for (id = ids; id->id[0] || id->cls; id++) {
1566 if (!acpi_match_device_ids(adev, id))
1567 match_id = id;
1568 else if (match_id)
1569 break;
1570 }
1571
1572 return match_id;
1573}
1574
1575static acpi_status acpi_pmu_dev_add(acpi_handle handle, u32 level,
1576 void *data, void **return_value)
1577{
1578 const struct acpi_device_id *acpi_id;
1579 struct xgene_pmu *xgene_pmu = data;
1580 struct xgene_pmu_dev_ctx *ctx;
1581 struct acpi_device *adev;
1582
1583 if (acpi_bus_get_device(handle, &adev))
1584 return AE_OK;
1585 if (acpi_bus_get_status(adev) || !adev->status.present)
1586 return AE_OK;
1587
1588 acpi_id = xgene_pmu_acpi_match_type(xgene_pmu_acpi_type_match, adev);
1589 if (!acpi_id)
1590 return AE_OK;
1591
1592 ctx = acpi_get_pmu_hw_inf(xgene_pmu, adev, (u32)acpi_id->driver_data);
1593 if (!ctx)
1594 return AE_OK;
1595
1596 if (xgene_pmu_dev_add(xgene_pmu, ctx)) {
1597
1598 devm_kfree(xgene_pmu->dev, ctx);
1599 return AE_OK;
1600 }
1601
1602 switch (ctx->inf.type) {
1603 case PMU_TYPE_L3C:
1604 list_add(&ctx->next, &xgene_pmu->l3cpmus);
1605 break;
1606 case PMU_TYPE_IOB:
1607 list_add(&ctx->next, &xgene_pmu->iobpmus);
1608 break;
1609 case PMU_TYPE_IOB_SLOW:
1610 list_add(&ctx->next, &xgene_pmu->iobpmus);
1611 break;
1612 case PMU_TYPE_MCB:
1613 list_add(&ctx->next, &xgene_pmu->mcbpmus);
1614 break;
1615 case PMU_TYPE_MC:
1616 list_add(&ctx->next, &xgene_pmu->mcpmus);
1617 break;
1618 }
1619 return AE_OK;
1620}
1621
1622static int acpi_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu,
1623 struct platform_device *pdev)
1624{
1625 struct device *dev = xgene_pmu->dev;
1626 acpi_handle handle;
1627 acpi_status status;
1628
1629 handle = ACPI_HANDLE(dev);
1630 if (!handle)
1631 return -EINVAL;
1632
1633 status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1,
1634 acpi_pmu_dev_add, NULL, xgene_pmu, NULL);
1635 if (ACPI_FAILURE(status)) {
1636 dev_err(dev, "failed to probe PMU devices\n");
1637 return -ENODEV;
1638 }
1639
1640 return 0;
1641}
1642#else
1643static int acpi_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu,
1644 struct platform_device *pdev)
1645{
1646 return 0;
1647}
1648#endif
1649
1650static struct
1651xgene_pmu_dev_ctx *fdt_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu,
1652 struct device_node *np, u32 type)
1653{
1654 struct device *dev = xgene_pmu->dev;
1655 struct xgene_pmu_dev_ctx *ctx;
1656 struct hw_pmu_info *inf;
1657 void __iomem *dev_csr;
1658 struct resource res;
1659 int enable_bit;
1660
1661 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
1662 if (!ctx)
1663 return NULL;
1664
1665 if (of_address_to_resource(np, 0, &res) < 0) {
1666 dev_err(dev, "PMU type %d: No resource address found\n", type);
1667 return NULL;
1668 }
1669
1670 dev_csr = devm_ioremap_resource(dev, &res);
1671 if (IS_ERR(dev_csr)) {
1672 dev_err(dev, "PMU type %d: Fail to map resource\n", type);
1673 return NULL;
1674 }
1675
1676
1677 if (of_property_read_u32(np, "enable-bit-index", &enable_bit))
1678 enable_bit = 0;
1679
1680 ctx->name = xgene_pmu_dev_name(dev, type, enable_bit);
1681 if (!ctx->name) {
1682 dev_err(dev, "PMU type %d: Fail to get device name\n", type);
1683 return NULL;
1684 }
1685
1686 inf = &ctx->inf;
1687 inf->type = type;
1688 inf->csr = dev_csr;
1689 inf->enable_mask = 1 << enable_bit;
1690
1691 return ctx;
1692}
1693
1694static int fdt_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu,
1695 struct platform_device *pdev)
1696{
1697 struct xgene_pmu_dev_ctx *ctx;
1698 struct device_node *np;
1699
1700 for_each_child_of_node(pdev->dev.of_node, np) {
1701 if (!of_device_is_available(np))
1702 continue;
1703
1704 if (of_device_is_compatible(np, "apm,xgene-pmu-l3c"))
1705 ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_L3C);
1706 else if (of_device_is_compatible(np, "apm,xgene-pmu-iob"))
1707 ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_IOB);
1708 else if (of_device_is_compatible(np, "apm,xgene-pmu-mcb"))
1709 ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_MCB);
1710 else if (of_device_is_compatible(np, "apm,xgene-pmu-mc"))
1711 ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_MC);
1712 else
1713 ctx = NULL;
1714
1715 if (!ctx)
1716 continue;
1717
1718 if (xgene_pmu_dev_add(xgene_pmu, ctx)) {
1719
1720 devm_kfree(xgene_pmu->dev, ctx);
1721 continue;
1722 }
1723
1724 switch (ctx->inf.type) {
1725 case PMU_TYPE_L3C:
1726 list_add(&ctx->next, &xgene_pmu->l3cpmus);
1727 break;
1728 case PMU_TYPE_IOB:
1729 list_add(&ctx->next, &xgene_pmu->iobpmus);
1730 break;
1731 case PMU_TYPE_IOB_SLOW:
1732 list_add(&ctx->next, &xgene_pmu->iobpmus);
1733 break;
1734 case PMU_TYPE_MCB:
1735 list_add(&ctx->next, &xgene_pmu->mcbpmus);
1736 break;
1737 case PMU_TYPE_MC:
1738 list_add(&ctx->next, &xgene_pmu->mcpmus);
1739 break;
1740 }
1741 }
1742
1743 return 0;
1744}
1745
1746static int xgene_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu,
1747 struct platform_device *pdev)
1748{
1749 if (has_acpi_companion(&pdev->dev))
1750 return acpi_pmu_probe_pmu_dev(xgene_pmu, pdev);
1751 return fdt_pmu_probe_pmu_dev(xgene_pmu, pdev);
1752}
1753
1754static const struct xgene_pmu_data xgene_pmu_data = {
1755 .id = PCP_PMU_V1,
1756};
1757
1758static const struct xgene_pmu_data xgene_pmu_v2_data = {
1759 .id = PCP_PMU_V2,
1760};
1761
1762static const struct xgene_pmu_ops xgene_pmu_ops = {
1763 .mask_int = xgene_pmu_mask_int,
1764 .unmask_int = xgene_pmu_unmask_int,
1765 .read_counter = xgene_pmu_read_counter32,
1766 .write_counter = xgene_pmu_write_counter32,
1767 .write_evttype = xgene_pmu_write_evttype,
1768 .write_agentmsk = xgene_pmu_write_agentmsk,
1769 .write_agent1msk = xgene_pmu_write_agent1msk,
1770 .enable_counter = xgene_pmu_enable_counter,
1771 .disable_counter = xgene_pmu_disable_counter,
1772 .enable_counter_int = xgene_pmu_enable_counter_int,
1773 .disable_counter_int = xgene_pmu_disable_counter_int,
1774 .reset_counters = xgene_pmu_reset_counters,
1775 .start_counters = xgene_pmu_start_counters,
1776 .stop_counters = xgene_pmu_stop_counters,
1777};
1778
1779static const struct xgene_pmu_ops xgene_pmu_v3_ops = {
1780 .mask_int = xgene_pmu_v3_mask_int,
1781 .unmask_int = xgene_pmu_v3_unmask_int,
1782 .read_counter = xgene_pmu_read_counter64,
1783 .write_counter = xgene_pmu_write_counter64,
1784 .write_evttype = xgene_pmu_write_evttype,
1785 .write_agentmsk = xgene_pmu_v3_write_agentmsk,
1786 .write_agent1msk = xgene_pmu_v3_write_agent1msk,
1787 .enable_counter = xgene_pmu_enable_counter,
1788 .disable_counter = xgene_pmu_disable_counter,
1789 .enable_counter_int = xgene_pmu_enable_counter_int,
1790 .disable_counter_int = xgene_pmu_disable_counter_int,
1791 .reset_counters = xgene_pmu_reset_counters,
1792 .start_counters = xgene_pmu_start_counters,
1793 .stop_counters = xgene_pmu_stop_counters,
1794};
1795
1796static const struct of_device_id xgene_pmu_of_match[] = {
1797 { .compatible = "apm,xgene-pmu", .data = &xgene_pmu_data },
1798 { .compatible = "apm,xgene-pmu-v2", .data = &xgene_pmu_v2_data },
1799 {},
1800};
1801MODULE_DEVICE_TABLE(of, xgene_pmu_of_match);
1802#ifdef CONFIG_ACPI
1803static const struct acpi_device_id xgene_pmu_acpi_match[] = {
1804 {"APMC0D5B", PCP_PMU_V1},
1805 {"APMC0D5C", PCP_PMU_V2},
1806 {"APMC0D83", PCP_PMU_V3},
1807 {},
1808};
1809MODULE_DEVICE_TABLE(acpi, xgene_pmu_acpi_match);
1810#endif
1811
1812static int xgene_pmu_online_cpu(unsigned int cpu, struct hlist_node *node)
1813{
1814 struct xgene_pmu *xgene_pmu = hlist_entry_safe(node, struct xgene_pmu,
1815 node);
1816
1817 if (cpumask_empty(&xgene_pmu->cpu))
1818 cpumask_set_cpu(cpu, &xgene_pmu->cpu);
1819
1820
1821 WARN_ON(irq_set_affinity(xgene_pmu->irq, &xgene_pmu->cpu));
1822
1823 return 0;
1824}
1825
1826static int xgene_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node)
1827{
1828 struct xgene_pmu *xgene_pmu = hlist_entry_safe(node, struct xgene_pmu,
1829 node);
1830 struct xgene_pmu_dev_ctx *ctx;
1831 unsigned int target;
1832
1833 if (!cpumask_test_and_clear_cpu(cpu, &xgene_pmu->cpu))
1834 return 0;
1835 target = cpumask_any_but(cpu_online_mask, cpu);
1836 if (target >= nr_cpu_ids)
1837 return 0;
1838
1839 list_for_each_entry(ctx, &xgene_pmu->mcpmus, next) {
1840 perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target);
1841 }
1842 list_for_each_entry(ctx, &xgene_pmu->mcbpmus, next) {
1843 perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target);
1844 }
1845 list_for_each_entry(ctx, &xgene_pmu->l3cpmus, next) {
1846 perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target);
1847 }
1848 list_for_each_entry(ctx, &xgene_pmu->iobpmus, next) {
1849 perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target);
1850 }
1851
1852 cpumask_set_cpu(target, &xgene_pmu->cpu);
1853
1854 WARN_ON(irq_set_affinity(xgene_pmu->irq, &xgene_pmu->cpu));
1855
1856 return 0;
1857}
1858
1859static int xgene_pmu_probe(struct platform_device *pdev)
1860{
1861 const struct xgene_pmu_data *dev_data;
1862 const struct of_device_id *of_id;
1863 struct xgene_pmu *xgene_pmu;
1864 struct resource *res;
1865 int irq, rc;
1866 int version;
1867
1868
1869 rc = cpuhp_setup_state_multi(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE,
1870 "CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE",
1871 xgene_pmu_online_cpu,
1872 xgene_pmu_offline_cpu);
1873 if (rc)
1874 return rc;
1875
1876 xgene_pmu = devm_kzalloc(&pdev->dev, sizeof(*xgene_pmu), GFP_KERNEL);
1877 if (!xgene_pmu)
1878 return -ENOMEM;
1879 xgene_pmu->dev = &pdev->dev;
1880 platform_set_drvdata(pdev, xgene_pmu);
1881
1882 version = -EINVAL;
1883 of_id = of_match_device(xgene_pmu_of_match, &pdev->dev);
1884 if (of_id) {
1885 dev_data = (const struct xgene_pmu_data *) of_id->data;
1886 version = dev_data->id;
1887 }
1888
1889#ifdef CONFIG_ACPI
1890 if (ACPI_COMPANION(&pdev->dev)) {
1891 const struct acpi_device_id *acpi_id;
1892
1893 acpi_id = acpi_match_device(xgene_pmu_acpi_match, &pdev->dev);
1894 if (acpi_id)
1895 version = (int) acpi_id->driver_data;
1896 }
1897#endif
1898 if (version < 0)
1899 return -ENODEV;
1900
1901 if (version == PCP_PMU_V3)
1902 xgene_pmu->ops = &xgene_pmu_v3_ops;
1903 else
1904 xgene_pmu->ops = &xgene_pmu_ops;
1905
1906 INIT_LIST_HEAD(&xgene_pmu->l3cpmus);
1907 INIT_LIST_HEAD(&xgene_pmu->iobpmus);
1908 INIT_LIST_HEAD(&xgene_pmu->mcbpmus);
1909 INIT_LIST_HEAD(&xgene_pmu->mcpmus);
1910
1911 xgene_pmu->version = version;
1912 dev_info(&pdev->dev, "X-Gene PMU version %d\n", xgene_pmu->version);
1913
1914 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1915 xgene_pmu->pcppmu_csr = devm_ioremap_resource(&pdev->dev, res);
1916 if (IS_ERR(xgene_pmu->pcppmu_csr)) {
1917 dev_err(&pdev->dev, "ioremap failed for PCP PMU resource\n");
1918 return PTR_ERR(xgene_pmu->pcppmu_csr);
1919 }
1920
1921 irq = platform_get_irq(pdev, 0);
1922 if (irq < 0) {
1923 dev_err(&pdev->dev, "No IRQ resource\n");
1924 return -EINVAL;
1925 }
1926
1927 rc = devm_request_irq(&pdev->dev, irq, xgene_pmu_isr,
1928 IRQF_NOBALANCING | IRQF_NO_THREAD,
1929 dev_name(&pdev->dev), xgene_pmu);
1930 if (rc) {
1931 dev_err(&pdev->dev, "Could not request IRQ %d\n", irq);
1932 return rc;
1933 }
1934
1935 xgene_pmu->irq = irq;
1936
1937 raw_spin_lock_init(&xgene_pmu->lock);
1938
1939
1940 rc = xgene_pmu_probe_active_mcb_mcu_l3c(xgene_pmu, pdev);
1941 if (rc) {
1942 dev_warn(&pdev->dev, "Unknown MCB/MCU active status\n");
1943 xgene_pmu->mcb_active_mask = 0x1;
1944 xgene_pmu->mc_active_mask = 0x1;
1945 }
1946
1947
1948 rc = cpuhp_state_add_instance(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE,
1949 &xgene_pmu->node);
1950 if (rc) {
1951 dev_err(&pdev->dev, "Error %d registering hotplug", rc);
1952 return rc;
1953 }
1954
1955
1956 rc = xgene_pmu_probe_pmu_dev(xgene_pmu, pdev);
1957 if (rc) {
1958 dev_err(&pdev->dev, "No PMU perf devices found!\n");
1959 goto out_unregister;
1960 }
1961
1962
1963 xgene_pmu->ops->unmask_int(xgene_pmu);
1964
1965 return 0;
1966
1967out_unregister:
1968 cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE,
1969 &xgene_pmu->node);
1970 return rc;
1971}
1972
1973static void
1974xgene_pmu_dev_cleanup(struct xgene_pmu *xgene_pmu, struct list_head *pmus)
1975{
1976 struct xgene_pmu_dev_ctx *ctx;
1977
1978 list_for_each_entry(ctx, pmus, next) {
1979 perf_pmu_unregister(&ctx->pmu_dev->pmu);
1980 }
1981}
1982
1983static int xgene_pmu_remove(struct platform_device *pdev)
1984{
1985 struct xgene_pmu *xgene_pmu = dev_get_drvdata(&pdev->dev);
1986
1987 xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->l3cpmus);
1988 xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->iobpmus);
1989 xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->mcbpmus);
1990 xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->mcpmus);
1991 cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE,
1992 &xgene_pmu->node);
1993
1994 return 0;
1995}
1996
1997static struct platform_driver xgene_pmu_driver = {
1998 .probe = xgene_pmu_probe,
1999 .remove = xgene_pmu_remove,
2000 .driver = {
2001 .name = "xgene-pmu",
2002 .of_match_table = xgene_pmu_of_match,
2003 .acpi_match_table = ACPI_PTR(xgene_pmu_acpi_match),
2004 },
2005};
2006
2007builtin_platform_driver(xgene_pmu_driver);
2008
