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1ccea77e | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
832c927d TN |
2 | /* |
3 | * APM X-Gene SoC PMU (Performance Monitor Unit) | |
4 | * | |
5 | * Copyright (c) 2016, Applied Micro Circuits Corporation | |
6 | * Author: Hoan Tran <hotran@apm.com> | |
7 | * Tai Nguyen <ttnguyen@apm.com> | |
832c927d TN |
8 | */ |
9 | ||
10 | #include <linux/acpi.h> | |
11 | #include <linux/clk.h> | |
cbb72a3c | 12 | #include <linux/cpuhotplug.h> |
832c927d TN |
13 | #include <linux/cpumask.h> |
14 | #include <linux/interrupt.h> | |
15 | #include <linux/io.h> | |
16 | #include <linux/mfd/syscon.h> | |
c0bfc549 | 17 | #include <linux/module.h> |
832c927d TN |
18 | #include <linux/of_address.h> |
19 | #include <linux/of_fdt.h> | |
20 | #include <linux/of_irq.h> | |
21 | #include <linux/of_platform.h> | |
22 | #include <linux/perf_event.h> | |
23 | #include <linux/platform_device.h> | |
24 | #include <linux/regmap.h> | |
25 | #include <linux/slab.h> | |
26 | ||
27 | #define CSW_CSWCR 0x0000 | |
28 | #define CSW_CSWCR_DUALMCB_MASK BIT(0) | |
c0f7f7ac HT |
29 | #define CSW_CSWCR_MCB0_ROUTING(x) (((x) & 0x0C) >> 2) |
30 | #define CSW_CSWCR_MCB1_ROUTING(x) (((x) & 0x30) >> 4) | |
832c927d TN |
31 | #define MCBADDRMR 0x0000 |
32 | #define MCBADDRMR_DUALMCU_MODE_MASK BIT(2) | |
33 | ||
34 | #define PCPPMU_INTSTATUS_REG 0x000 | |
35 | #define PCPPMU_INTMASK_REG 0x004 | |
36 | #define PCPPMU_INTMASK 0x0000000F | |
37 | #define PCPPMU_INTENMASK 0xFFFFFFFF | |
38 | #define PCPPMU_INTCLRMASK 0xFFFFFFF0 | |
39 | #define PCPPMU_INT_MCU BIT(0) | |
40 | #define PCPPMU_INT_MCB BIT(1) | |
41 | #define PCPPMU_INT_L3C BIT(2) | |
42 | #define PCPPMU_INT_IOB BIT(3) | |
43 | ||
c0f7f7ac HT |
44 | #define PCPPMU_V3_INTMASK 0x00FF33FF |
45 | #define PCPPMU_V3_INTENMASK 0xFFFFFFFF | |
46 | #define PCPPMU_V3_INTCLRMASK 0xFF00CC00 | |
47 | #define PCPPMU_V3_INT_MCU 0x000000FF | |
48 | #define PCPPMU_V3_INT_MCB 0x00000300 | |
49 | #define PCPPMU_V3_INT_L3C 0x00FF0000 | |
50 | #define PCPPMU_V3_INT_IOB 0x00003000 | |
51 | ||
832c927d | 52 | #define PMU_MAX_COUNTERS 4 |
c0f7f7ac HT |
53 | #define PMU_CNT_MAX_PERIOD 0xFFFFFFFFULL |
54 | #define PMU_V3_CNT_MAX_PERIOD 0xFFFFFFFFFFFFFFFFULL | |
832c927d TN |
55 | #define PMU_OVERFLOW_MASK 0xF |
56 | #define PMU_PMCR_E BIT(0) | |
57 | #define PMU_PMCR_P BIT(1) | |
58 | ||
59 | #define PMU_PMEVCNTR0 0x000 | |
60 | #define PMU_PMEVCNTR1 0x004 | |
61 | #define PMU_PMEVCNTR2 0x008 | |
62 | #define PMU_PMEVCNTR3 0x00C | |
63 | #define PMU_PMEVTYPER0 0x400 | |
64 | #define PMU_PMEVTYPER1 0x404 | |
65 | #define PMU_PMEVTYPER2 0x408 | |
66 | #define PMU_PMEVTYPER3 0x40C | |
67 | #define PMU_PMAMR0 0xA00 | |
68 | #define PMU_PMAMR1 0xA04 | |
69 | #define PMU_PMCNTENSET 0xC00 | |
70 | #define PMU_PMCNTENCLR 0xC20 | |
71 | #define PMU_PMINTENSET 0xC40 | |
72 | #define PMU_PMINTENCLR 0xC60 | |
73 | #define PMU_PMOVSR 0xC80 | |
74 | #define PMU_PMCR 0xE04 | |
75 | ||
c0f7f7ac HT |
76 | /* PMU registers for V3 */ |
77 | #define PMU_PMOVSCLR 0xC80 | |
78 | #define PMU_PMOVSSET 0xCC0 | |
79 | ||
832c927d TN |
80 | #define to_pmu_dev(p) container_of(p, struct xgene_pmu_dev, pmu) |
81 | #define GET_CNTR(ev) (ev->hw.idx) | |
82 | #define GET_EVENTID(ev) (ev->hw.config & 0xFFULL) | |
83 | #define GET_AGENTID(ev) (ev->hw.config_base & 0xFFFFFFFFUL) | |
84 | #define GET_AGENT1ID(ev) ((ev->hw.config_base >> 32) & 0xFFFFFFFFUL) | |
85 | ||
86 | struct hw_pmu_info { | |
87 | u32 type; | |
88 | u32 enable_mask; | |
89 | void __iomem *csr; | |
90 | }; | |
91 | ||
92 | struct xgene_pmu_dev { | |
93 | struct hw_pmu_info *inf; | |
94 | struct xgene_pmu *parent; | |
95 | struct pmu pmu; | |
96 | u8 max_counters; | |
97 | DECLARE_BITMAP(cntr_assign_mask, PMU_MAX_COUNTERS); | |
98 | u64 max_period; | |
99 | const struct attribute_group **attr_groups; | |
100 | struct perf_event *pmu_counter_event[PMU_MAX_COUNTERS]; | |
101 | }; | |
102 | ||
e35e0a04 HT |
103 | struct xgene_pmu_ops { |
104 | void (*mask_int)(struct xgene_pmu *pmu); | |
105 | void (*unmask_int)(struct xgene_pmu *pmu); | |
106 | u64 (*read_counter)(struct xgene_pmu_dev *pmu, int idx); | |
107 | void (*write_counter)(struct xgene_pmu_dev *pmu, int idx, u64 val); | |
108 | void (*write_evttype)(struct xgene_pmu_dev *pmu_dev, int idx, u32 val); | |
109 | void (*write_agentmsk)(struct xgene_pmu_dev *pmu_dev, u32 val); | |
110 | void (*write_agent1msk)(struct xgene_pmu_dev *pmu_dev, u32 val); | |
111 | void (*enable_counter)(struct xgene_pmu_dev *pmu_dev, int idx); | |
112 | void (*disable_counter)(struct xgene_pmu_dev *pmu_dev, int idx); | |
113 | void (*enable_counter_int)(struct xgene_pmu_dev *pmu_dev, int idx); | |
114 | void (*disable_counter_int)(struct xgene_pmu_dev *pmu_dev, int idx); | |
115 | void (*reset_counters)(struct xgene_pmu_dev *pmu_dev); | |
116 | void (*start_counters)(struct xgene_pmu_dev *pmu_dev); | |
117 | void (*stop_counters)(struct xgene_pmu_dev *pmu_dev); | |
118 | }; | |
119 | ||
832c927d TN |
120 | struct xgene_pmu { |
121 | struct device *dev; | |
cbb72a3c | 122 | struct hlist_node node; |
832c927d TN |
123 | int version; |
124 | void __iomem *pcppmu_csr; | |
125 | u32 mcb_active_mask; | |
126 | u32 mc_active_mask; | |
c0f7f7ac | 127 | u32 l3c_active_mask; |
832c927d | 128 | cpumask_t cpu; |
cbb72a3c | 129 | int irq; |
832c927d | 130 | raw_spinlock_t lock; |
e35e0a04 | 131 | const struct xgene_pmu_ops *ops; |
832c927d TN |
132 | struct list_head l3cpmus; |
133 | struct list_head iobpmus; | |
134 | struct list_head mcbpmus; | |
135 | struct list_head mcpmus; | |
136 | }; | |
137 | ||
138 | struct xgene_pmu_dev_ctx { | |
139 | char *name; | |
140 | struct list_head next; | |
141 | struct xgene_pmu_dev *pmu_dev; | |
142 | struct hw_pmu_info inf; | |
143 | }; | |
144 | ||
145 | struct xgene_pmu_data { | |
146 | int id; | |
147 | u32 data; | |
148 | }; | |
149 | ||
150 | enum xgene_pmu_version { | |
151 | PCP_PMU_V1 = 1, | |
152 | PCP_PMU_V2, | |
c0f7f7ac | 153 | PCP_PMU_V3, |
832c927d TN |
154 | }; |
155 | ||
156 | enum xgene_pmu_dev_type { | |
157 | PMU_TYPE_L3C = 0, | |
158 | PMU_TYPE_IOB, | |
c0f7f7ac | 159 | PMU_TYPE_IOB_SLOW, |
832c927d TN |
160 | PMU_TYPE_MCB, |
161 | PMU_TYPE_MC, | |
162 | }; | |
163 | ||
164 | /* | |
165 | * sysfs format attributes | |
166 | */ | |
167 | static ssize_t xgene_pmu_format_show(struct device *dev, | |
168 | struct device_attribute *attr, char *buf) | |
169 | { | |
170 | struct dev_ext_attribute *eattr; | |
171 | ||
172 | eattr = container_of(attr, struct dev_ext_attribute, attr); | |
173 | return sprintf(buf, "%s\n", (char *) eattr->var); | |
174 | } | |
175 | ||
176 | #define XGENE_PMU_FORMAT_ATTR(_name, _config) \ | |
177 | (&((struct dev_ext_attribute[]) { \ | |
178 | { .attr = __ATTR(_name, S_IRUGO, xgene_pmu_format_show, NULL), \ | |
179 | .var = (void *) _config, } \ | |
180 | })[0].attr.attr) | |
181 | ||
182 | static struct attribute *l3c_pmu_format_attrs[] = { | |
183 | XGENE_PMU_FORMAT_ATTR(l3c_eventid, "config:0-7"), | |
184 | XGENE_PMU_FORMAT_ATTR(l3c_agentid, "config1:0-9"), | |
185 | NULL, | |
186 | }; | |
187 | ||
188 | static struct attribute *iob_pmu_format_attrs[] = { | |
189 | XGENE_PMU_FORMAT_ATTR(iob_eventid, "config:0-7"), | |
190 | XGENE_PMU_FORMAT_ATTR(iob_agentid, "config1:0-63"), | |
191 | NULL, | |
192 | }; | |
193 | ||
194 | static struct attribute *mcb_pmu_format_attrs[] = { | |
195 | XGENE_PMU_FORMAT_ATTR(mcb_eventid, "config:0-5"), | |
196 | XGENE_PMU_FORMAT_ATTR(mcb_agentid, "config1:0-9"), | |
197 | NULL, | |
198 | }; | |
199 | ||
200 | static struct attribute *mc_pmu_format_attrs[] = { | |
201 | XGENE_PMU_FORMAT_ATTR(mc_eventid, "config:0-28"), | |
202 | NULL, | |
203 | }; | |
204 | ||
205 | static const struct attribute_group l3c_pmu_format_attr_group = { | |
206 | .name = "format", | |
207 | .attrs = l3c_pmu_format_attrs, | |
208 | }; | |
209 | ||
210 | static const struct attribute_group iob_pmu_format_attr_group = { | |
211 | .name = "format", | |
212 | .attrs = iob_pmu_format_attrs, | |
213 | }; | |
214 | ||
215 | static const struct attribute_group mcb_pmu_format_attr_group = { | |
216 | .name = "format", | |
217 | .attrs = mcb_pmu_format_attrs, | |
218 | }; | |
219 | ||
220 | static const struct attribute_group mc_pmu_format_attr_group = { | |
221 | .name = "format", | |
222 | .attrs = mc_pmu_format_attrs, | |
223 | }; | |
224 | ||
c0f7f7ac HT |
225 | static struct attribute *l3c_pmu_v3_format_attrs[] = { |
226 | XGENE_PMU_FORMAT_ATTR(l3c_eventid, "config:0-39"), | |
227 | NULL, | |
228 | }; | |
229 | ||
230 | static struct attribute *iob_pmu_v3_format_attrs[] = { | |
231 | XGENE_PMU_FORMAT_ATTR(iob_eventid, "config:0-47"), | |
232 | NULL, | |
233 | }; | |
234 | ||
235 | static struct attribute *iob_slow_pmu_v3_format_attrs[] = { | |
236 | XGENE_PMU_FORMAT_ATTR(iob_slow_eventid, "config:0-16"), | |
237 | NULL, | |
238 | }; | |
239 | ||
240 | static struct attribute *mcb_pmu_v3_format_attrs[] = { | |
241 | XGENE_PMU_FORMAT_ATTR(mcb_eventid, "config:0-35"), | |
242 | NULL, | |
243 | }; | |
244 | ||
245 | static struct attribute *mc_pmu_v3_format_attrs[] = { | |
246 | XGENE_PMU_FORMAT_ATTR(mc_eventid, "config:0-44"), | |
247 | NULL, | |
248 | }; | |
249 | ||
250 | static const struct attribute_group l3c_pmu_v3_format_attr_group = { | |
251 | .name = "format", | |
252 | .attrs = l3c_pmu_v3_format_attrs, | |
253 | }; | |
254 | ||
255 | static const struct attribute_group iob_pmu_v3_format_attr_group = { | |
256 | .name = "format", | |
257 | .attrs = iob_pmu_v3_format_attrs, | |
258 | }; | |
259 | ||
260 | static const struct attribute_group iob_slow_pmu_v3_format_attr_group = { | |
261 | .name = "format", | |
262 | .attrs = iob_slow_pmu_v3_format_attrs, | |
263 | }; | |
264 | ||
265 | static const struct attribute_group mcb_pmu_v3_format_attr_group = { | |
266 | .name = "format", | |
267 | .attrs = mcb_pmu_v3_format_attrs, | |
268 | }; | |
269 | ||
270 | static const struct attribute_group mc_pmu_v3_format_attr_group = { | |
271 | .name = "format", | |
272 | .attrs = mc_pmu_v3_format_attrs, | |
273 | }; | |
274 | ||
832c927d TN |
275 | /* |
276 | * sysfs event attributes | |
277 | */ | |
278 | static ssize_t xgene_pmu_event_show(struct device *dev, | |
279 | struct device_attribute *attr, char *buf) | |
280 | { | |
281 | struct dev_ext_attribute *eattr; | |
282 | ||
283 | eattr = container_of(attr, struct dev_ext_attribute, attr); | |
284 | return sprintf(buf, "config=0x%lx\n", (unsigned long) eattr->var); | |
285 | } | |
286 | ||
287 | #define XGENE_PMU_EVENT_ATTR(_name, _config) \ | |
288 | (&((struct dev_ext_attribute[]) { \ | |
289 | { .attr = __ATTR(_name, S_IRUGO, xgene_pmu_event_show, NULL), \ | |
290 | .var = (void *) _config, } \ | |
291 | })[0].attr.attr) | |
292 | ||
293 | static struct attribute *l3c_pmu_events_attrs[] = { | |
294 | XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), | |
295 | XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01), | |
296 | XGENE_PMU_EVENT_ATTR(read-hit, 0x02), | |
297 | XGENE_PMU_EVENT_ATTR(read-miss, 0x03), | |
298 | XGENE_PMU_EVENT_ATTR(write-need-replacement, 0x06), | |
299 | XGENE_PMU_EVENT_ATTR(write-not-need-replacement, 0x07), | |
300 | XGENE_PMU_EVENT_ATTR(tq-full, 0x08), | |
301 | XGENE_PMU_EVENT_ATTR(ackq-full, 0x09), | |
302 | XGENE_PMU_EVENT_ATTR(wdb-full, 0x0a), | |
303 | XGENE_PMU_EVENT_ATTR(bank-fifo-full, 0x0b), | |
304 | XGENE_PMU_EVENT_ATTR(odb-full, 0x0c), | |
305 | XGENE_PMU_EVENT_ATTR(wbq-full, 0x0d), | |
306 | XGENE_PMU_EVENT_ATTR(bank-conflict-fifo-issue, 0x0e), | |
307 | XGENE_PMU_EVENT_ATTR(bank-fifo-issue, 0x0f), | |
308 | NULL, | |
309 | }; | |
310 | ||
311 | static struct attribute *iob_pmu_events_attrs[] = { | |
312 | XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), | |
313 | XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01), | |
314 | XGENE_PMU_EVENT_ATTR(axi0-read, 0x02), | |
315 | XGENE_PMU_EVENT_ATTR(axi0-read-partial, 0x03), | |
316 | XGENE_PMU_EVENT_ATTR(axi1-read, 0x04), | |
317 | XGENE_PMU_EVENT_ATTR(axi1-read-partial, 0x05), | |
318 | XGENE_PMU_EVENT_ATTR(csw-read-block, 0x06), | |
319 | XGENE_PMU_EVENT_ATTR(csw-read-partial, 0x07), | |
320 | XGENE_PMU_EVENT_ATTR(axi0-write, 0x10), | |
321 | XGENE_PMU_EVENT_ATTR(axi0-write-partial, 0x11), | |
322 | XGENE_PMU_EVENT_ATTR(axi1-write, 0x13), | |
323 | XGENE_PMU_EVENT_ATTR(axi1-write-partial, 0x14), | |
324 | XGENE_PMU_EVENT_ATTR(csw-inbound-dirty, 0x16), | |
325 | NULL, | |
326 | }; | |
327 | ||
328 | static struct attribute *mcb_pmu_events_attrs[] = { | |
329 | XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), | |
330 | XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01), | |
331 | XGENE_PMU_EVENT_ATTR(csw-read, 0x02), | |
332 | XGENE_PMU_EVENT_ATTR(csw-write-request, 0x03), | |
333 | XGENE_PMU_EVENT_ATTR(mcb-csw-stall, 0x04), | |
334 | XGENE_PMU_EVENT_ATTR(cancel-read-gack, 0x05), | |
335 | NULL, | |
336 | }; | |
337 | ||
338 | static struct attribute *mc_pmu_events_attrs[] = { | |
339 | XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), | |
340 | XGENE_PMU_EVENT_ATTR(cycle-count-div-64, 0x01), | |
341 | XGENE_PMU_EVENT_ATTR(act-cmd-sent, 0x02), | |
342 | XGENE_PMU_EVENT_ATTR(pre-cmd-sent, 0x03), | |
343 | XGENE_PMU_EVENT_ATTR(rd-cmd-sent, 0x04), | |
344 | XGENE_PMU_EVENT_ATTR(rda-cmd-sent, 0x05), | |
345 | XGENE_PMU_EVENT_ATTR(wr-cmd-sent, 0x06), | |
346 | XGENE_PMU_EVENT_ATTR(wra-cmd-sent, 0x07), | |
347 | XGENE_PMU_EVENT_ATTR(pde-cmd-sent, 0x08), | |
348 | XGENE_PMU_EVENT_ATTR(sre-cmd-sent, 0x09), | |
349 | XGENE_PMU_EVENT_ATTR(prea-cmd-sent, 0x0a), | |
350 | XGENE_PMU_EVENT_ATTR(ref-cmd-sent, 0x0b), | |
351 | XGENE_PMU_EVENT_ATTR(rd-rda-cmd-sent, 0x0c), | |
352 | XGENE_PMU_EVENT_ATTR(wr-wra-cmd-sent, 0x0d), | |
353 | XGENE_PMU_EVENT_ATTR(in-rd-collision, 0x0e), | |
354 | XGENE_PMU_EVENT_ATTR(in-wr-collision, 0x0f), | |
355 | XGENE_PMU_EVENT_ATTR(collision-queue-not-empty, 0x10), | |
356 | XGENE_PMU_EVENT_ATTR(collision-queue-full, 0x11), | |
357 | XGENE_PMU_EVENT_ATTR(mcu-request, 0x12), | |
358 | XGENE_PMU_EVENT_ATTR(mcu-rd-request, 0x13), | |
359 | XGENE_PMU_EVENT_ATTR(mcu-hp-rd-request, 0x14), | |
360 | XGENE_PMU_EVENT_ATTR(mcu-wr-request, 0x15), | |
361 | XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-all, 0x16), | |
362 | XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-cancel, 0x17), | |
363 | XGENE_PMU_EVENT_ATTR(mcu-rd-response, 0x18), | |
364 | XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-speculative-all, 0x19), | |
365 | XGENE_PMU_EVENT_ATTR(mcu-rd-proceed-speculative-cancel, 0x1a), | |
366 | XGENE_PMU_EVENT_ATTR(mcu-wr-proceed-all, 0x1b), | |
367 | XGENE_PMU_EVENT_ATTR(mcu-wr-proceed-cancel, 0x1c), | |
368 | NULL, | |
369 | }; | |
370 | ||
371 | static const struct attribute_group l3c_pmu_events_attr_group = { | |
372 | .name = "events", | |
373 | .attrs = l3c_pmu_events_attrs, | |
374 | }; | |
375 | ||
376 | static const struct attribute_group iob_pmu_events_attr_group = { | |
377 | .name = "events", | |
378 | .attrs = iob_pmu_events_attrs, | |
379 | }; | |
380 | ||
381 | static const struct attribute_group mcb_pmu_events_attr_group = { | |
382 | .name = "events", | |
383 | .attrs = mcb_pmu_events_attrs, | |
384 | }; | |
385 | ||
386 | static const struct attribute_group mc_pmu_events_attr_group = { | |
387 | .name = "events", | |
388 | .attrs = mc_pmu_events_attrs, | |
389 | }; | |
390 | ||
c0f7f7ac HT |
391 | static struct attribute *l3c_pmu_v3_events_attrs[] = { |
392 | XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), | |
393 | XGENE_PMU_EVENT_ATTR(read-hit, 0x01), | |
394 | XGENE_PMU_EVENT_ATTR(read-miss, 0x02), | |
395 | XGENE_PMU_EVENT_ATTR(index-flush-eviction, 0x03), | |
396 | XGENE_PMU_EVENT_ATTR(write-caused-replacement, 0x04), | |
397 | XGENE_PMU_EVENT_ATTR(write-not-caused-replacement, 0x05), | |
398 | XGENE_PMU_EVENT_ATTR(clean-eviction, 0x06), | |
399 | XGENE_PMU_EVENT_ATTR(dirty-eviction, 0x07), | |
400 | XGENE_PMU_EVENT_ATTR(read, 0x08), | |
401 | XGENE_PMU_EVENT_ATTR(write, 0x09), | |
402 | XGENE_PMU_EVENT_ATTR(request, 0x0a), | |
403 | XGENE_PMU_EVENT_ATTR(tq-bank-conflict-issue-stall, 0x0b), | |
404 | XGENE_PMU_EVENT_ATTR(tq-full, 0x0c), | |
405 | XGENE_PMU_EVENT_ATTR(ackq-full, 0x0d), | |
406 | XGENE_PMU_EVENT_ATTR(wdb-full, 0x0e), | |
407 | XGENE_PMU_EVENT_ATTR(odb-full, 0x10), | |
408 | XGENE_PMU_EVENT_ATTR(wbq-full, 0x11), | |
409 | XGENE_PMU_EVENT_ATTR(input-req-async-fifo-stall, 0x12), | |
410 | XGENE_PMU_EVENT_ATTR(output-req-async-fifo-stall, 0x13), | |
411 | XGENE_PMU_EVENT_ATTR(output-data-async-fifo-stall, 0x14), | |
412 | XGENE_PMU_EVENT_ATTR(total-insertion, 0x15), | |
413 | XGENE_PMU_EVENT_ATTR(sip-insertions-r-set, 0x16), | |
414 | XGENE_PMU_EVENT_ATTR(sip-insertions-r-clear, 0x17), | |
415 | XGENE_PMU_EVENT_ATTR(dip-insertions-r-set, 0x18), | |
416 | XGENE_PMU_EVENT_ATTR(dip-insertions-r-clear, 0x19), | |
417 | XGENE_PMU_EVENT_ATTR(dip-insertions-force-r-set, 0x1a), | |
418 | XGENE_PMU_EVENT_ATTR(egression, 0x1b), | |
419 | XGENE_PMU_EVENT_ATTR(replacement, 0x1c), | |
420 | XGENE_PMU_EVENT_ATTR(old-replacement, 0x1d), | |
421 | XGENE_PMU_EVENT_ATTR(young-replacement, 0x1e), | |
422 | XGENE_PMU_EVENT_ATTR(r-set-replacement, 0x1f), | |
423 | XGENE_PMU_EVENT_ATTR(r-clear-replacement, 0x20), | |
424 | XGENE_PMU_EVENT_ATTR(old-r-replacement, 0x21), | |
425 | XGENE_PMU_EVENT_ATTR(old-nr-replacement, 0x22), | |
426 | XGENE_PMU_EVENT_ATTR(young-r-replacement, 0x23), | |
427 | XGENE_PMU_EVENT_ATTR(young-nr-replacement, 0x24), | |
428 | XGENE_PMU_EVENT_ATTR(bloomfilter-clearing, 0x25), | |
429 | XGENE_PMU_EVENT_ATTR(generation-flip, 0x26), | |
430 | XGENE_PMU_EVENT_ATTR(vcc-droop-detected, 0x27), | |
431 | NULL, | |
432 | }; | |
433 | ||
434 | static struct attribute *iob_fast_pmu_v3_events_attrs[] = { | |
435 | XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), | |
436 | XGENE_PMU_EVENT_ATTR(pa-req-buf-alloc-all, 0x01), | |
437 | XGENE_PMU_EVENT_ATTR(pa-req-buf-alloc-rd, 0x02), | |
438 | XGENE_PMU_EVENT_ATTR(pa-req-buf-alloc-wr, 0x03), | |
439 | XGENE_PMU_EVENT_ATTR(pa-all-cp-req, 0x04), | |
440 | XGENE_PMU_EVENT_ATTR(pa-cp-blk-req, 0x05), | |
441 | XGENE_PMU_EVENT_ATTR(pa-cp-ptl-req, 0x06), | |
442 | XGENE_PMU_EVENT_ATTR(pa-cp-rd-req, 0x07), | |
443 | XGENE_PMU_EVENT_ATTR(pa-cp-wr-req, 0x08), | |
444 | XGENE_PMU_EVENT_ATTR(ba-all-req, 0x09), | |
445 | XGENE_PMU_EVENT_ATTR(ba-rd-req, 0x0a), | |
446 | XGENE_PMU_EVENT_ATTR(ba-wr-req, 0x0b), | |
447 | XGENE_PMU_EVENT_ATTR(pa-rd-shared-req-issued, 0x10), | |
448 | XGENE_PMU_EVENT_ATTR(pa-rd-exclusive-req-issued, 0x11), | |
449 | XGENE_PMU_EVENT_ATTR(pa-wr-invalidate-req-issued-stashable, 0x12), | |
450 | XGENE_PMU_EVENT_ATTR(pa-wr-invalidate-req-issued-nonstashable, 0x13), | |
451 | XGENE_PMU_EVENT_ATTR(pa-wr-back-req-issued-stashable, 0x14), | |
452 | XGENE_PMU_EVENT_ATTR(pa-wr-back-req-issued-nonstashable, 0x15), | |
453 | XGENE_PMU_EVENT_ATTR(pa-ptl-wr-req, 0x16), | |
454 | XGENE_PMU_EVENT_ATTR(pa-ptl-rd-req, 0x17), | |
455 | XGENE_PMU_EVENT_ATTR(pa-wr-back-clean-data, 0x18), | |
456 | XGENE_PMU_EVENT_ATTR(pa-wr-back-cancelled-on-SS, 0x1b), | |
457 | XGENE_PMU_EVENT_ATTR(pa-barrier-occurrence, 0x1c), | |
458 | XGENE_PMU_EVENT_ATTR(pa-barrier-cycles, 0x1d), | |
459 | XGENE_PMU_EVENT_ATTR(pa-total-cp-snoops, 0x20), | |
460 | XGENE_PMU_EVENT_ATTR(pa-rd-shared-snoop, 0x21), | |
461 | XGENE_PMU_EVENT_ATTR(pa-rd-shared-snoop-hit, 0x22), | |
462 | XGENE_PMU_EVENT_ATTR(pa-rd-exclusive-snoop, 0x23), | |
463 | XGENE_PMU_EVENT_ATTR(pa-rd-exclusive-snoop-hit, 0x24), | |
464 | XGENE_PMU_EVENT_ATTR(pa-rd-wr-invalid-snoop, 0x25), | |
465 | XGENE_PMU_EVENT_ATTR(pa-rd-wr-invalid-snoop-hit, 0x26), | |
466 | XGENE_PMU_EVENT_ATTR(pa-req-buffer-full, 0x28), | |
467 | XGENE_PMU_EVENT_ATTR(cswlf-outbound-req-fifo-full, 0x29), | |
468 | XGENE_PMU_EVENT_ATTR(cswlf-inbound-snoop-fifo-backpressure, 0x2a), | |
469 | XGENE_PMU_EVENT_ATTR(cswlf-outbound-lack-fifo-full, 0x2b), | |
470 | XGENE_PMU_EVENT_ATTR(cswlf-inbound-gack-fifo-backpressure, 0x2c), | |
471 | XGENE_PMU_EVENT_ATTR(cswlf-outbound-data-fifo-full, 0x2d), | |
472 | XGENE_PMU_EVENT_ATTR(cswlf-inbound-data-fifo-backpressure, 0x2e), | |
473 | XGENE_PMU_EVENT_ATTR(cswlf-inbound-req-backpressure, 0x2f), | |
474 | NULL, | |
475 | }; | |
476 | ||
477 | static struct attribute *iob_slow_pmu_v3_events_attrs[] = { | |
478 | XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), | |
479 | XGENE_PMU_EVENT_ATTR(pa-axi0-rd-req, 0x01), | |
480 | XGENE_PMU_EVENT_ATTR(pa-axi0-wr-req, 0x02), | |
481 | XGENE_PMU_EVENT_ATTR(pa-axi1-rd-req, 0x03), | |
482 | XGENE_PMU_EVENT_ATTR(pa-axi1-wr-req, 0x04), | |
483 | XGENE_PMU_EVENT_ATTR(ba-all-axi-req, 0x07), | |
484 | XGENE_PMU_EVENT_ATTR(ba-axi-rd-req, 0x08), | |
485 | XGENE_PMU_EVENT_ATTR(ba-axi-wr-req, 0x09), | |
486 | XGENE_PMU_EVENT_ATTR(ba-free-list-empty, 0x10), | |
487 | NULL, | |
488 | }; | |
489 | ||
490 | static struct attribute *mcb_pmu_v3_events_attrs[] = { | |
491 | XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), | |
492 | XGENE_PMU_EVENT_ATTR(req-receive, 0x01), | |
493 | XGENE_PMU_EVENT_ATTR(rd-req-recv, 0x02), | |
494 | XGENE_PMU_EVENT_ATTR(rd-req-recv-2, 0x03), | |
495 | XGENE_PMU_EVENT_ATTR(wr-req-recv, 0x04), | |
496 | XGENE_PMU_EVENT_ATTR(wr-req-recv-2, 0x05), | |
497 | XGENE_PMU_EVENT_ATTR(rd-req-sent-to-mcu, 0x06), | |
498 | XGENE_PMU_EVENT_ATTR(rd-req-sent-to-mcu-2, 0x07), | |
499 | XGENE_PMU_EVENT_ATTR(rd-req-sent-to-spec-mcu, 0x08), | |
500 | XGENE_PMU_EVENT_ATTR(rd-req-sent-to-spec-mcu-2, 0x09), | |
501 | XGENE_PMU_EVENT_ATTR(glbl-ack-recv-for-rd-sent-to-spec-mcu, 0x0a), | |
502 | XGENE_PMU_EVENT_ATTR(glbl-ack-go-recv-for-rd-sent-to-spec-mcu, 0x0b), | |
503 | XGENE_PMU_EVENT_ATTR(glbl-ack-nogo-recv-for-rd-sent-to-spec-mcu, 0x0c), | |
504 | XGENE_PMU_EVENT_ATTR(glbl-ack-go-recv-any-rd-req, 0x0d), | |
505 | XGENE_PMU_EVENT_ATTR(glbl-ack-go-recv-any-rd-req-2, 0x0e), | |
506 | XGENE_PMU_EVENT_ATTR(wr-req-sent-to-mcu, 0x0f), | |
507 | XGENE_PMU_EVENT_ATTR(gack-recv, 0x10), | |
508 | XGENE_PMU_EVENT_ATTR(rd-gack-recv, 0x11), | |
509 | XGENE_PMU_EVENT_ATTR(wr-gack-recv, 0x12), | |
510 | XGENE_PMU_EVENT_ATTR(cancel-rd-gack, 0x13), | |
511 | XGENE_PMU_EVENT_ATTR(cancel-wr-gack, 0x14), | |
512 | XGENE_PMU_EVENT_ATTR(mcb-csw-req-stall, 0x15), | |
513 | XGENE_PMU_EVENT_ATTR(mcu-req-intf-blocked, 0x16), | |
514 | XGENE_PMU_EVENT_ATTR(mcb-mcu-rd-intf-stall, 0x17), | |
515 | XGENE_PMU_EVENT_ATTR(csw-rd-intf-blocked, 0x18), | |
516 | XGENE_PMU_EVENT_ATTR(csw-local-ack-intf-blocked, 0x19), | |
517 | XGENE_PMU_EVENT_ATTR(mcu-req-table-full, 0x1a), | |
518 | XGENE_PMU_EVENT_ATTR(mcu-stat-table-full, 0x1b), | |
519 | XGENE_PMU_EVENT_ATTR(mcu-wr-table-full, 0x1c), | |
520 | XGENE_PMU_EVENT_ATTR(mcu-rdreceipt-resp, 0x1d), | |
521 | XGENE_PMU_EVENT_ATTR(mcu-wrcomplete-resp, 0x1e), | |
522 | XGENE_PMU_EVENT_ATTR(mcu-retryack-resp, 0x1f), | |
523 | XGENE_PMU_EVENT_ATTR(mcu-pcrdgrant-resp, 0x20), | |
524 | XGENE_PMU_EVENT_ATTR(mcu-req-from-lastload, 0x21), | |
525 | XGENE_PMU_EVENT_ATTR(mcu-req-from-bypass, 0x22), | |
526 | XGENE_PMU_EVENT_ATTR(volt-droop-detect, 0x23), | |
527 | NULL, | |
528 | }; | |
529 | ||
530 | static struct attribute *mc_pmu_v3_events_attrs[] = { | |
531 | XGENE_PMU_EVENT_ATTR(cycle-count, 0x00), | |
532 | XGENE_PMU_EVENT_ATTR(act-sent, 0x01), | |
533 | XGENE_PMU_EVENT_ATTR(pre-sent, 0x02), | |
534 | XGENE_PMU_EVENT_ATTR(rd-sent, 0x03), | |
535 | XGENE_PMU_EVENT_ATTR(rda-sent, 0x04), | |
536 | XGENE_PMU_EVENT_ATTR(wr-sent, 0x05), | |
537 | XGENE_PMU_EVENT_ATTR(wra-sent, 0x06), | |
538 | XGENE_PMU_EVENT_ATTR(pd-entry-vld, 0x07), | |
539 | XGENE_PMU_EVENT_ATTR(sref-entry-vld, 0x08), | |
540 | XGENE_PMU_EVENT_ATTR(prea-sent, 0x09), | |
541 | XGENE_PMU_EVENT_ATTR(ref-sent, 0x0a), | |
542 | XGENE_PMU_EVENT_ATTR(rd-rda-sent, 0x0b), | |
543 | XGENE_PMU_EVENT_ATTR(wr-wra-sent, 0x0c), | |
544 | XGENE_PMU_EVENT_ATTR(raw-hazard, 0x0d), | |
545 | XGENE_PMU_EVENT_ATTR(war-hazard, 0x0e), | |
546 | XGENE_PMU_EVENT_ATTR(waw-hazard, 0x0f), | |
547 | XGENE_PMU_EVENT_ATTR(rar-hazard, 0x10), | |
548 | XGENE_PMU_EVENT_ATTR(raw-war-waw-hazard, 0x11), | |
549 | XGENE_PMU_EVENT_ATTR(hprd-lprd-wr-req-vld, 0x12), | |
550 | XGENE_PMU_EVENT_ATTR(lprd-req-vld, 0x13), | |
551 | XGENE_PMU_EVENT_ATTR(hprd-req-vld, 0x14), | |
552 | XGENE_PMU_EVENT_ATTR(hprd-lprd-req-vld, 0x15), | |
553 | XGENE_PMU_EVENT_ATTR(wr-req-vld, 0x16), | |
554 | XGENE_PMU_EVENT_ATTR(partial-wr-req-vld, 0x17), | |
555 | XGENE_PMU_EVENT_ATTR(rd-retry, 0x18), | |
556 | XGENE_PMU_EVENT_ATTR(wr-retry, 0x19), | |
557 | XGENE_PMU_EVENT_ATTR(retry-gnt, 0x1a), | |
558 | XGENE_PMU_EVENT_ATTR(rank-change, 0x1b), | |
559 | XGENE_PMU_EVENT_ATTR(dir-change, 0x1c), | |
560 | XGENE_PMU_EVENT_ATTR(rank-dir-change, 0x1d), | |
561 | XGENE_PMU_EVENT_ATTR(rank-active, 0x1e), | |
562 | XGENE_PMU_EVENT_ATTR(rank-idle, 0x1f), | |
563 | XGENE_PMU_EVENT_ATTR(rank-pd, 0x20), | |
564 | XGENE_PMU_EVENT_ATTR(rank-sref, 0x21), | |
565 | XGENE_PMU_EVENT_ATTR(queue-fill-gt-thresh, 0x22), | |
566 | XGENE_PMU_EVENT_ATTR(queue-rds-gt-thresh, 0x23), | |
567 | XGENE_PMU_EVENT_ATTR(queue-wrs-gt-thresh, 0x24), | |
568 | XGENE_PMU_EVENT_ATTR(phy-updt-complt, 0x25), | |
569 | XGENE_PMU_EVENT_ATTR(tz-fail, 0x26), | |
570 | XGENE_PMU_EVENT_ATTR(dram-errc, 0x27), | |
571 | XGENE_PMU_EVENT_ATTR(dram-errd, 0x28), | |
572 | XGENE_PMU_EVENT_ATTR(rd-enq, 0x29), | |
573 | XGENE_PMU_EVENT_ATTR(wr-enq, 0x2a), | |
574 | XGENE_PMU_EVENT_ATTR(tmac-limit-reached, 0x2b), | |
575 | XGENE_PMU_EVENT_ATTR(tmaw-tracker-full, 0x2c), | |
576 | NULL, | |
577 | }; | |
578 | ||
579 | static const struct attribute_group l3c_pmu_v3_events_attr_group = { | |
580 | .name = "events", | |
581 | .attrs = l3c_pmu_v3_events_attrs, | |
582 | }; | |
583 | ||
584 | static const struct attribute_group iob_fast_pmu_v3_events_attr_group = { | |
585 | .name = "events", | |
586 | .attrs = iob_fast_pmu_v3_events_attrs, | |
587 | }; | |
588 | ||
589 | static const struct attribute_group iob_slow_pmu_v3_events_attr_group = { | |
590 | .name = "events", | |
591 | .attrs = iob_slow_pmu_v3_events_attrs, | |
592 | }; | |
593 | ||
594 | static const struct attribute_group mcb_pmu_v3_events_attr_group = { | |
595 | .name = "events", | |
596 | .attrs = mcb_pmu_v3_events_attrs, | |
597 | }; | |
598 | ||
599 | static const struct attribute_group mc_pmu_v3_events_attr_group = { | |
600 | .name = "events", | |
601 | .attrs = mc_pmu_v3_events_attrs, | |
602 | }; | |
603 | ||
832c927d TN |
604 | /* |
605 | * sysfs cpumask attributes | |
606 | */ | |
607 | static ssize_t xgene_pmu_cpumask_show(struct device *dev, | |
608 | struct device_attribute *attr, char *buf) | |
609 | { | |
610 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(dev_get_drvdata(dev)); | |
611 | ||
612 | return cpumap_print_to_pagebuf(true, buf, &pmu_dev->parent->cpu); | |
613 | } | |
614 | ||
615 | static DEVICE_ATTR(cpumask, S_IRUGO, xgene_pmu_cpumask_show, NULL); | |
616 | ||
617 | static struct attribute *xgene_pmu_cpumask_attrs[] = { | |
618 | &dev_attr_cpumask.attr, | |
619 | NULL, | |
620 | }; | |
621 | ||
622 | static const struct attribute_group pmu_cpumask_attr_group = { | |
623 | .attrs = xgene_pmu_cpumask_attrs, | |
624 | }; | |
625 | ||
626 | /* | |
c0f7f7ac | 627 | * Per PMU device attribute groups of PMU v1 and v2 |
832c927d TN |
628 | */ |
629 | static const struct attribute_group *l3c_pmu_attr_groups[] = { | |
630 | &l3c_pmu_format_attr_group, | |
631 | &pmu_cpumask_attr_group, | |
632 | &l3c_pmu_events_attr_group, | |
633 | NULL | |
634 | }; | |
635 | ||
636 | static const struct attribute_group *iob_pmu_attr_groups[] = { | |
637 | &iob_pmu_format_attr_group, | |
638 | &pmu_cpumask_attr_group, | |
639 | &iob_pmu_events_attr_group, | |
640 | NULL | |
641 | }; | |
642 | ||
643 | static const struct attribute_group *mcb_pmu_attr_groups[] = { | |
644 | &mcb_pmu_format_attr_group, | |
645 | &pmu_cpumask_attr_group, | |
646 | &mcb_pmu_events_attr_group, | |
647 | NULL | |
648 | }; | |
649 | ||
650 | static const struct attribute_group *mc_pmu_attr_groups[] = { | |
651 | &mc_pmu_format_attr_group, | |
652 | &pmu_cpumask_attr_group, | |
653 | &mc_pmu_events_attr_group, | |
654 | NULL | |
655 | }; | |
656 | ||
c0f7f7ac HT |
657 | /* |
658 | * Per PMU device attribute groups of PMU v3 | |
659 | */ | |
660 | static const struct attribute_group *l3c_pmu_v3_attr_groups[] = { | |
661 | &l3c_pmu_v3_format_attr_group, | |
662 | &pmu_cpumask_attr_group, | |
663 | &l3c_pmu_v3_events_attr_group, | |
664 | NULL | |
665 | }; | |
666 | ||
667 | static const struct attribute_group *iob_fast_pmu_v3_attr_groups[] = { | |
668 | &iob_pmu_v3_format_attr_group, | |
669 | &pmu_cpumask_attr_group, | |
670 | &iob_fast_pmu_v3_events_attr_group, | |
671 | NULL | |
672 | }; | |
673 | ||
674 | static const struct attribute_group *iob_slow_pmu_v3_attr_groups[] = { | |
675 | &iob_slow_pmu_v3_format_attr_group, | |
676 | &pmu_cpumask_attr_group, | |
677 | &iob_slow_pmu_v3_events_attr_group, | |
678 | NULL | |
679 | }; | |
680 | ||
681 | static const struct attribute_group *mcb_pmu_v3_attr_groups[] = { | |
682 | &mcb_pmu_v3_format_attr_group, | |
683 | &pmu_cpumask_attr_group, | |
684 | &mcb_pmu_v3_events_attr_group, | |
685 | NULL | |
686 | }; | |
687 | ||
688 | static const struct attribute_group *mc_pmu_v3_attr_groups[] = { | |
689 | &mc_pmu_v3_format_attr_group, | |
690 | &pmu_cpumask_attr_group, | |
691 | &mc_pmu_v3_events_attr_group, | |
692 | NULL | |
693 | }; | |
694 | ||
832c927d TN |
695 | static int get_next_avail_cntr(struct xgene_pmu_dev *pmu_dev) |
696 | { | |
697 | int cntr; | |
698 | ||
699 | cntr = find_first_zero_bit(pmu_dev->cntr_assign_mask, | |
700 | pmu_dev->max_counters); | |
701 | if (cntr == pmu_dev->max_counters) | |
702 | return -ENOSPC; | |
703 | set_bit(cntr, pmu_dev->cntr_assign_mask); | |
704 | ||
705 | return cntr; | |
706 | } | |
707 | ||
708 | static void clear_avail_cntr(struct xgene_pmu_dev *pmu_dev, int cntr) | |
709 | { | |
710 | clear_bit(cntr, pmu_dev->cntr_assign_mask); | |
711 | } | |
712 | ||
713 | static inline void xgene_pmu_mask_int(struct xgene_pmu *xgene_pmu) | |
714 | { | |
715 | writel(PCPPMU_INTENMASK, xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG); | |
716 | } | |
717 | ||
c0f7f7ac HT |
718 | static inline void xgene_pmu_v3_mask_int(struct xgene_pmu *xgene_pmu) |
719 | { | |
720 | writel(PCPPMU_V3_INTENMASK, xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG); | |
721 | } | |
722 | ||
832c927d TN |
723 | static inline void xgene_pmu_unmask_int(struct xgene_pmu *xgene_pmu) |
724 | { | |
725 | writel(PCPPMU_INTCLRMASK, xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG); | |
726 | } | |
727 | ||
c0f7f7ac HT |
728 | static inline void xgene_pmu_v3_unmask_int(struct xgene_pmu *xgene_pmu) |
729 | { | |
730 | writel(PCPPMU_V3_INTCLRMASK, | |
731 | xgene_pmu->pcppmu_csr + PCPPMU_INTMASK_REG); | |
732 | } | |
733 | ||
e35e0a04 HT |
734 | static inline u64 xgene_pmu_read_counter32(struct xgene_pmu_dev *pmu_dev, |
735 | int idx) | |
832c927d TN |
736 | { |
737 | return readl(pmu_dev->inf->csr + PMU_PMEVCNTR0 + (4 * idx)); | |
738 | } | |
739 | ||
c0f7f7ac HT |
740 | static inline u64 xgene_pmu_read_counter64(struct xgene_pmu_dev *pmu_dev, |
741 | int idx) | |
742 | { | |
743 | u32 lo, hi; | |
744 | ||
745 | /* | |
746 | * v3 has 64-bit counter registers composed by 2 32-bit registers | |
747 | * This can be a problem if the counter increases and carries | |
748 | * out of bit [31] between 2 reads. The extra reads would help | |
749 | * to prevent this issue. | |
750 | */ | |
751 | do { | |
752 | hi = xgene_pmu_read_counter32(pmu_dev, 2 * idx + 1); | |
753 | lo = xgene_pmu_read_counter32(pmu_dev, 2 * idx); | |
754 | } while (hi != xgene_pmu_read_counter32(pmu_dev, 2 * idx + 1)); | |
755 | ||
756 | return (((u64)hi << 32) | lo); | |
757 | } | |
758 | ||
832c927d | 759 | static inline void |
e35e0a04 | 760 | xgene_pmu_write_counter32(struct xgene_pmu_dev *pmu_dev, int idx, u64 val) |
832c927d TN |
761 | { |
762 | writel(val, pmu_dev->inf->csr + PMU_PMEVCNTR0 + (4 * idx)); | |
763 | } | |
764 | ||
c0f7f7ac HT |
765 | static inline void |
766 | xgene_pmu_write_counter64(struct xgene_pmu_dev *pmu_dev, int idx, u64 val) | |
767 | { | |
768 | u32 cnt_lo, cnt_hi; | |
769 | ||
770 | cnt_hi = upper_32_bits(val); | |
771 | cnt_lo = lower_32_bits(val); | |
772 | ||
773 | /* v3 has 64-bit counter registers composed by 2 32-bit registers */ | |
774 | xgene_pmu_write_counter32(pmu_dev, 2 * idx, cnt_lo); | |
775 | xgene_pmu_write_counter32(pmu_dev, 2 * idx + 1, cnt_hi); | |
776 | } | |
777 | ||
832c927d TN |
778 | static inline void |
779 | xgene_pmu_write_evttype(struct xgene_pmu_dev *pmu_dev, int idx, u32 val) | |
780 | { | |
781 | writel(val, pmu_dev->inf->csr + PMU_PMEVTYPER0 + (4 * idx)); | |
782 | } | |
783 | ||
784 | static inline void | |
785 | xgene_pmu_write_agentmsk(struct xgene_pmu_dev *pmu_dev, u32 val) | |
786 | { | |
787 | writel(val, pmu_dev->inf->csr + PMU_PMAMR0); | |
788 | } | |
789 | ||
c0f7f7ac HT |
790 | static inline void |
791 | xgene_pmu_v3_write_agentmsk(struct xgene_pmu_dev *pmu_dev, u32 val) { } | |
792 | ||
832c927d TN |
793 | static inline void |
794 | xgene_pmu_write_agent1msk(struct xgene_pmu_dev *pmu_dev, u32 val) | |
795 | { | |
796 | writel(val, pmu_dev->inf->csr + PMU_PMAMR1); | |
797 | } | |
798 | ||
c0f7f7ac HT |
799 | static inline void |
800 | xgene_pmu_v3_write_agent1msk(struct xgene_pmu_dev *pmu_dev, u32 val) { } | |
801 | ||
832c927d TN |
802 | static inline void |
803 | xgene_pmu_enable_counter(struct xgene_pmu_dev *pmu_dev, int idx) | |
804 | { | |
805 | u32 val; | |
806 | ||
807 | val = readl(pmu_dev->inf->csr + PMU_PMCNTENSET); | |
808 | val |= 1 << idx; | |
809 | writel(val, pmu_dev->inf->csr + PMU_PMCNTENSET); | |
810 | } | |
811 | ||
812 | static inline void | |
813 | xgene_pmu_disable_counter(struct xgene_pmu_dev *pmu_dev, int idx) | |
814 | { | |
815 | u32 val; | |
816 | ||
817 | val = readl(pmu_dev->inf->csr + PMU_PMCNTENCLR); | |
818 | val |= 1 << idx; | |
819 | writel(val, pmu_dev->inf->csr + PMU_PMCNTENCLR); | |
820 | } | |
821 | ||
822 | static inline void | |
823 | xgene_pmu_enable_counter_int(struct xgene_pmu_dev *pmu_dev, int idx) | |
824 | { | |
825 | u32 val; | |
826 | ||
827 | val = readl(pmu_dev->inf->csr + PMU_PMINTENSET); | |
828 | val |= 1 << idx; | |
829 | writel(val, pmu_dev->inf->csr + PMU_PMINTENSET); | |
830 | } | |
831 | ||
832 | static inline void | |
833 | xgene_pmu_disable_counter_int(struct xgene_pmu_dev *pmu_dev, int idx) | |
834 | { | |
835 | u32 val; | |
836 | ||
837 | val = readl(pmu_dev->inf->csr + PMU_PMINTENCLR); | |
838 | val |= 1 << idx; | |
839 | writel(val, pmu_dev->inf->csr + PMU_PMINTENCLR); | |
840 | } | |
841 | ||
842 | static inline void xgene_pmu_reset_counters(struct xgene_pmu_dev *pmu_dev) | |
843 | { | |
844 | u32 val; | |
845 | ||
846 | val = readl(pmu_dev->inf->csr + PMU_PMCR); | |
847 | val |= PMU_PMCR_P; | |
848 | writel(val, pmu_dev->inf->csr + PMU_PMCR); | |
849 | } | |
850 | ||
851 | static inline void xgene_pmu_start_counters(struct xgene_pmu_dev *pmu_dev) | |
852 | { | |
853 | u32 val; | |
854 | ||
855 | val = readl(pmu_dev->inf->csr + PMU_PMCR); | |
856 | val |= PMU_PMCR_E; | |
857 | writel(val, pmu_dev->inf->csr + PMU_PMCR); | |
858 | } | |
859 | ||
860 | static inline void xgene_pmu_stop_counters(struct xgene_pmu_dev *pmu_dev) | |
861 | { | |
862 | u32 val; | |
863 | ||
864 | val = readl(pmu_dev->inf->csr + PMU_PMCR); | |
865 | val &= ~PMU_PMCR_E; | |
866 | writel(val, pmu_dev->inf->csr + PMU_PMCR); | |
867 | } | |
868 | ||
869 | static void xgene_perf_pmu_enable(struct pmu *pmu) | |
870 | { | |
871 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(pmu); | |
e35e0a04 | 872 | struct xgene_pmu *xgene_pmu = pmu_dev->parent; |
832c927d TN |
873 | int enabled = bitmap_weight(pmu_dev->cntr_assign_mask, |
874 | pmu_dev->max_counters); | |
875 | ||
876 | if (!enabled) | |
877 | return; | |
878 | ||
e35e0a04 | 879 | xgene_pmu->ops->start_counters(pmu_dev); |
832c927d TN |
880 | } |
881 | ||
882 | static void xgene_perf_pmu_disable(struct pmu *pmu) | |
883 | { | |
884 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(pmu); | |
e35e0a04 | 885 | struct xgene_pmu *xgene_pmu = pmu_dev->parent; |
832c927d | 886 | |
e35e0a04 | 887 | xgene_pmu->ops->stop_counters(pmu_dev); |
832c927d TN |
888 | } |
889 | ||
890 | static int xgene_perf_event_init(struct perf_event *event) | |
891 | { | |
892 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); | |
893 | struct hw_perf_event *hw = &event->hw; | |
894 | struct perf_event *sibling; | |
895 | ||
896 | /* Test the event attr type check for PMU enumeration */ | |
897 | if (event->attr.type != event->pmu->type) | |
898 | return -ENOENT; | |
899 | ||
900 | /* | |
901 | * SOC PMU counters are shared across all cores. | |
902 | * Therefore, it does not support per-process mode. | |
903 | * Also, it does not support event sampling mode. | |
904 | */ | |
905 | if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK) | |
906 | return -EINVAL; | |
907 | ||
832c927d TN |
908 | if (event->cpu < 0) |
909 | return -EINVAL; | |
910 | /* | |
911 | * Many perf core operations (eg. events rotation) operate on a | |
912 | * single CPU context. This is obvious for CPU PMUs, where one | |
913 | * expects the same sets of events being observed on all CPUs, | |
914 | * but can lead to issues for off-core PMUs, where each | |
915 | * event could be theoretically assigned to a different CPU. To | |
916 | * mitigate this, we enforce CPU assignment to one, selected | |
917 | * processor (the one described in the "cpumask" attribute). | |
918 | */ | |
919 | event->cpu = cpumask_first(&pmu_dev->parent->cpu); | |
920 | ||
921 | hw->config = event->attr.config; | |
922 | /* | |
923 | * Each bit of the config1 field represents an agent from which the | |
924 | * request of the event come. The event is counted only if it's caused | |
925 | * by a request of an agent has the bit cleared. | |
926 | * By default, the event is counted for all agents. | |
927 | */ | |
928 | hw->config_base = event->attr.config1; | |
929 | ||
930 | /* | |
931 | * We must NOT create groups containing mixed PMUs, although software | |
932 | * events are acceptable | |
933 | */ | |
934 | if (event->group_leader->pmu != event->pmu && | |
935 | !is_software_event(event->group_leader)) | |
936 | return -EINVAL; | |
937 | ||
edb39592 | 938 | for_each_sibling_event(sibling, event->group_leader) { |
832c927d TN |
939 | if (sibling->pmu != event->pmu && |
940 | !is_software_event(sibling)) | |
941 | return -EINVAL; | |
edb39592 | 942 | } |
832c927d TN |
943 | |
944 | return 0; | |
945 | } | |
946 | ||
947 | static void xgene_perf_enable_event(struct perf_event *event) | |
948 | { | |
949 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); | |
e35e0a04 | 950 | struct xgene_pmu *xgene_pmu = pmu_dev->parent; |
832c927d | 951 | |
e35e0a04 HT |
952 | xgene_pmu->ops->write_evttype(pmu_dev, GET_CNTR(event), |
953 | GET_EVENTID(event)); | |
954 | xgene_pmu->ops->write_agentmsk(pmu_dev, ~((u32)GET_AGENTID(event))); | |
832c927d | 955 | if (pmu_dev->inf->type == PMU_TYPE_IOB) |
e35e0a04 HT |
956 | xgene_pmu->ops->write_agent1msk(pmu_dev, |
957 | ~((u32)GET_AGENT1ID(event))); | |
832c927d | 958 | |
e35e0a04 HT |
959 | xgene_pmu->ops->enable_counter(pmu_dev, GET_CNTR(event)); |
960 | xgene_pmu->ops->enable_counter_int(pmu_dev, GET_CNTR(event)); | |
832c927d TN |
961 | } |
962 | ||
963 | static void xgene_perf_disable_event(struct perf_event *event) | |
964 | { | |
965 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); | |
e35e0a04 | 966 | struct xgene_pmu *xgene_pmu = pmu_dev->parent; |
832c927d | 967 | |
e35e0a04 HT |
968 | xgene_pmu->ops->disable_counter(pmu_dev, GET_CNTR(event)); |
969 | xgene_pmu->ops->disable_counter_int(pmu_dev, GET_CNTR(event)); | |
832c927d TN |
970 | } |
971 | ||
972 | static void xgene_perf_event_set_period(struct perf_event *event) | |
973 | { | |
974 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); | |
e35e0a04 | 975 | struct xgene_pmu *xgene_pmu = pmu_dev->parent; |
832c927d TN |
976 | struct hw_perf_event *hw = &event->hw; |
977 | /* | |
c0f7f7ac HT |
978 | * For 32 bit counter, it has a period of 2^32. To account for the |
979 | * possibility of extreme interrupt latency we program for a period of | |
980 | * half that. Hopefully, we can handle the interrupt before another 2^31 | |
832c927d | 981 | * events occur and the counter overtakes its previous value. |
c0f7f7ac | 982 | * For 64 bit counter, we don't expect it overflow. |
832c927d TN |
983 | */ |
984 | u64 val = 1ULL << 31; | |
985 | ||
986 | local64_set(&hw->prev_count, val); | |
e35e0a04 | 987 | xgene_pmu->ops->write_counter(pmu_dev, hw->idx, val); |
832c927d TN |
988 | } |
989 | ||
990 | static void xgene_perf_event_update(struct perf_event *event) | |
991 | { | |
992 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); | |
e35e0a04 | 993 | struct xgene_pmu *xgene_pmu = pmu_dev->parent; |
832c927d TN |
994 | struct hw_perf_event *hw = &event->hw; |
995 | u64 delta, prev_raw_count, new_raw_count; | |
996 | ||
997 | again: | |
998 | prev_raw_count = local64_read(&hw->prev_count); | |
e35e0a04 | 999 | new_raw_count = xgene_pmu->ops->read_counter(pmu_dev, GET_CNTR(event)); |
832c927d TN |
1000 | |
1001 | if (local64_cmpxchg(&hw->prev_count, prev_raw_count, | |
1002 | new_raw_count) != prev_raw_count) | |
1003 | goto again; | |
1004 | ||
1005 | delta = (new_raw_count - prev_raw_count) & pmu_dev->max_period; | |
1006 | ||
1007 | local64_add(delta, &event->count); | |
1008 | } | |
1009 | ||
1010 | static void xgene_perf_read(struct perf_event *event) | |
1011 | { | |
1012 | xgene_perf_event_update(event); | |
1013 | } | |
1014 | ||
1015 | static void xgene_perf_start(struct perf_event *event, int flags) | |
1016 | { | |
1017 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); | |
e35e0a04 | 1018 | struct xgene_pmu *xgene_pmu = pmu_dev->parent; |
832c927d TN |
1019 | struct hw_perf_event *hw = &event->hw; |
1020 | ||
1021 | if (WARN_ON_ONCE(!(hw->state & PERF_HES_STOPPED))) | |
1022 | return; | |
1023 | ||
1024 | WARN_ON_ONCE(!(hw->state & PERF_HES_UPTODATE)); | |
1025 | hw->state = 0; | |
1026 | ||
1027 | xgene_perf_event_set_period(event); | |
1028 | ||
1029 | if (flags & PERF_EF_RELOAD) { | |
1030 | u64 prev_raw_count = local64_read(&hw->prev_count); | |
1031 | ||
e35e0a04 HT |
1032 | xgene_pmu->ops->write_counter(pmu_dev, GET_CNTR(event), |
1033 | prev_raw_count); | |
832c927d TN |
1034 | } |
1035 | ||
1036 | xgene_perf_enable_event(event); | |
1037 | perf_event_update_userpage(event); | |
1038 | } | |
1039 | ||
1040 | static void xgene_perf_stop(struct perf_event *event, int flags) | |
1041 | { | |
1042 | struct hw_perf_event *hw = &event->hw; | |
832c927d TN |
1043 | |
1044 | if (hw->state & PERF_HES_UPTODATE) | |
1045 | return; | |
1046 | ||
1047 | xgene_perf_disable_event(event); | |
1048 | WARN_ON_ONCE(hw->state & PERF_HES_STOPPED); | |
1049 | hw->state |= PERF_HES_STOPPED; | |
1050 | ||
1051 | if (hw->state & PERF_HES_UPTODATE) | |
1052 | return; | |
1053 | ||
832c927d TN |
1054 | xgene_perf_read(event); |
1055 | hw->state |= PERF_HES_UPTODATE; | |
1056 | } | |
1057 | ||
1058 | static int xgene_perf_add(struct perf_event *event, int flags) | |
1059 | { | |
1060 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); | |
1061 | struct hw_perf_event *hw = &event->hw; | |
1062 | ||
1063 | hw->state = PERF_HES_UPTODATE | PERF_HES_STOPPED; | |
1064 | ||
1065 | /* Allocate an event counter */ | |
1066 | hw->idx = get_next_avail_cntr(pmu_dev); | |
1067 | if (hw->idx < 0) | |
1068 | return -EAGAIN; | |
1069 | ||
1070 | /* Update counter event pointer for Interrupt handler */ | |
1071 | pmu_dev->pmu_counter_event[hw->idx] = event; | |
1072 | ||
1073 | if (flags & PERF_EF_START) | |
1074 | xgene_perf_start(event, PERF_EF_RELOAD); | |
1075 | ||
1076 | return 0; | |
1077 | } | |
1078 | ||
1079 | static void xgene_perf_del(struct perf_event *event, int flags) | |
1080 | { | |
1081 | struct xgene_pmu_dev *pmu_dev = to_pmu_dev(event->pmu); | |
1082 | struct hw_perf_event *hw = &event->hw; | |
1083 | ||
1084 | xgene_perf_stop(event, PERF_EF_UPDATE); | |
1085 | ||
1086 | /* clear the assigned counter */ | |
1087 | clear_avail_cntr(pmu_dev, GET_CNTR(event)); | |
1088 | ||
1089 | perf_event_update_userpage(event); | |
1090 | pmu_dev->pmu_counter_event[hw->idx] = NULL; | |
1091 | } | |
1092 | ||
1093 | static int xgene_init_perf(struct xgene_pmu_dev *pmu_dev, char *name) | |
1094 | { | |
1095 | struct xgene_pmu *xgene_pmu; | |
1096 | ||
c0f7f7ac HT |
1097 | if (pmu_dev->parent->version == PCP_PMU_V3) |
1098 | pmu_dev->max_period = PMU_V3_CNT_MAX_PERIOD; | |
1099 | else | |
1100 | pmu_dev->max_period = PMU_CNT_MAX_PERIOD; | |
832c927d TN |
1101 | /* First version PMU supports only single event counter */ |
1102 | xgene_pmu = pmu_dev->parent; | |
1103 | if (xgene_pmu->version == PCP_PMU_V1) | |
1104 | pmu_dev->max_counters = 1; | |
1105 | else | |
1106 | pmu_dev->max_counters = PMU_MAX_COUNTERS; | |
1107 | ||
1108 | /* Perf driver registration */ | |
1109 | pmu_dev->pmu = (struct pmu) { | |
1110 | .attr_groups = pmu_dev->attr_groups, | |
1111 | .task_ctx_nr = perf_invalid_context, | |
1112 | .pmu_enable = xgene_perf_pmu_enable, | |
1113 | .pmu_disable = xgene_perf_pmu_disable, | |
1114 | .event_init = xgene_perf_event_init, | |
1115 | .add = xgene_perf_add, | |
1116 | .del = xgene_perf_del, | |
1117 | .start = xgene_perf_start, | |
1118 | .stop = xgene_perf_stop, | |
1119 | .read = xgene_perf_read, | |
a66b0010 | 1120 | .capabilities = PERF_PMU_CAP_NO_EXCLUDE, |
832c927d TN |
1121 | }; |
1122 | ||
1123 | /* Hardware counter init */ | |
e35e0a04 HT |
1124 | xgene_pmu->ops->stop_counters(pmu_dev); |
1125 | xgene_pmu->ops->reset_counters(pmu_dev); | |
832c927d TN |
1126 | |
1127 | return perf_pmu_register(&pmu_dev->pmu, name, -1); | |
1128 | } | |
1129 | ||
1130 | static int | |
1131 | xgene_pmu_dev_add(struct xgene_pmu *xgene_pmu, struct xgene_pmu_dev_ctx *ctx) | |
1132 | { | |
1133 | struct device *dev = xgene_pmu->dev; | |
1134 | struct xgene_pmu_dev *pmu; | |
832c927d TN |
1135 | |
1136 | pmu = devm_kzalloc(dev, sizeof(*pmu), GFP_KERNEL); | |
1137 | if (!pmu) | |
1138 | return -ENOMEM; | |
1139 | pmu->parent = xgene_pmu; | |
1140 | pmu->inf = &ctx->inf; | |
1141 | ctx->pmu_dev = pmu; | |
1142 | ||
1143 | switch (pmu->inf->type) { | |
1144 | case PMU_TYPE_L3C: | |
c0f7f7ac | 1145 | if (!(xgene_pmu->l3c_active_mask & pmu->inf->enable_mask)) |
c1be2ddb | 1146 | return -ENODEV; |
c0f7f7ac HT |
1147 | if (xgene_pmu->version == PCP_PMU_V3) |
1148 | pmu->attr_groups = l3c_pmu_v3_attr_groups; | |
1149 | else | |
1150 | pmu->attr_groups = l3c_pmu_attr_groups; | |
832c927d TN |
1151 | break; |
1152 | case PMU_TYPE_IOB: | |
c0f7f7ac HT |
1153 | if (xgene_pmu->version == PCP_PMU_V3) |
1154 | pmu->attr_groups = iob_fast_pmu_v3_attr_groups; | |
1155 | else | |
1156 | pmu->attr_groups = iob_pmu_attr_groups; | |
1157 | break; | |
1158 | case PMU_TYPE_IOB_SLOW: | |
1159 | if (xgene_pmu->version == PCP_PMU_V3) | |
1160 | pmu->attr_groups = iob_slow_pmu_v3_attr_groups; | |
832c927d TN |
1161 | break; |
1162 | case PMU_TYPE_MCB: | |
1163 | if (!(xgene_pmu->mcb_active_mask & pmu->inf->enable_mask)) | |
c1be2ddb | 1164 | return -ENODEV; |
c0f7f7ac HT |
1165 | if (xgene_pmu->version == PCP_PMU_V3) |
1166 | pmu->attr_groups = mcb_pmu_v3_attr_groups; | |
1167 | else | |
1168 | pmu->attr_groups = mcb_pmu_attr_groups; | |
832c927d TN |
1169 | break; |
1170 | case PMU_TYPE_MC: | |
1171 | if (!(xgene_pmu->mc_active_mask & pmu->inf->enable_mask)) | |
c1be2ddb | 1172 | return -ENODEV; |
c0f7f7ac HT |
1173 | if (xgene_pmu->version == PCP_PMU_V3) |
1174 | pmu->attr_groups = mc_pmu_v3_attr_groups; | |
1175 | else | |
1176 | pmu->attr_groups = mc_pmu_attr_groups; | |
832c927d TN |
1177 | break; |
1178 | default: | |
1179 | return -EINVAL; | |
1180 | } | |
1181 | ||
c1be2ddb | 1182 | if (xgene_init_perf(pmu, ctx->name)) { |
832c927d | 1183 | dev_err(dev, "%s PMU: Failed to init perf driver\n", ctx->name); |
c1be2ddb | 1184 | return -ENODEV; |
832c927d TN |
1185 | } |
1186 | ||
1187 | dev_info(dev, "%s PMU registered\n", ctx->name); | |
1188 | ||
c1be2ddb | 1189 | return 0; |
832c927d TN |
1190 | } |
1191 | ||
1192 | static void _xgene_pmu_isr(int irq, struct xgene_pmu_dev *pmu_dev) | |
1193 | { | |
1194 | struct xgene_pmu *xgene_pmu = pmu_dev->parent; | |
c0f7f7ac | 1195 | void __iomem *csr = pmu_dev->inf->csr; |
832c927d TN |
1196 | u32 pmovsr; |
1197 | int idx; | |
1198 | ||
c0f7f7ac HT |
1199 | xgene_pmu->ops->stop_counters(pmu_dev); |
1200 | ||
1201 | if (xgene_pmu->version == PCP_PMU_V3) | |
1202 | pmovsr = readl(csr + PMU_PMOVSSET) & PMU_OVERFLOW_MASK; | |
1203 | else | |
1204 | pmovsr = readl(csr + PMU_PMOVSR) & PMU_OVERFLOW_MASK; | |
1205 | ||
832c927d | 1206 | if (!pmovsr) |
c0f7f7ac | 1207 | goto out; |
832c927d TN |
1208 | |
1209 | /* Clear interrupt flag */ | |
1210 | if (xgene_pmu->version == PCP_PMU_V1) | |
c0f7f7ac HT |
1211 | writel(0x0, csr + PMU_PMOVSR); |
1212 | else if (xgene_pmu->version == PCP_PMU_V2) | |
1213 | writel(pmovsr, csr + PMU_PMOVSR); | |
832c927d | 1214 | else |
c0f7f7ac | 1215 | writel(pmovsr, csr + PMU_PMOVSCLR); |
832c927d TN |
1216 | |
1217 | for (idx = 0; idx < PMU_MAX_COUNTERS; idx++) { | |
1218 | struct perf_event *event = pmu_dev->pmu_counter_event[idx]; | |
1219 | int overflowed = pmovsr & BIT(idx); | |
1220 | ||
1221 | /* Ignore if we don't have an event. */ | |
1222 | if (!event || !overflowed) | |
1223 | continue; | |
1224 | xgene_perf_event_update(event); | |
1225 | xgene_perf_event_set_period(event); | |
1226 | } | |
c0f7f7ac HT |
1227 | |
1228 | out: | |
1229 | xgene_pmu->ops->start_counters(pmu_dev); | |
832c927d TN |
1230 | } |
1231 | ||
1232 | static irqreturn_t xgene_pmu_isr(int irq, void *dev_id) | |
1233 | { | |
c0f7f7ac | 1234 | u32 intr_mcu, intr_mcb, intr_l3c, intr_iob; |
832c927d TN |
1235 | struct xgene_pmu_dev_ctx *ctx; |
1236 | struct xgene_pmu *xgene_pmu = dev_id; | |
1237 | unsigned long flags; | |
1238 | u32 val; | |
1239 | ||
1240 | raw_spin_lock_irqsave(&xgene_pmu->lock, flags); | |
1241 | ||
1242 | /* Get Interrupt PMU source */ | |
1243 | val = readl(xgene_pmu->pcppmu_csr + PCPPMU_INTSTATUS_REG); | |
c0f7f7ac HT |
1244 | if (xgene_pmu->version == PCP_PMU_V3) { |
1245 | intr_mcu = PCPPMU_V3_INT_MCU; | |
1246 | intr_mcb = PCPPMU_V3_INT_MCB; | |
1247 | intr_l3c = PCPPMU_V3_INT_L3C; | |
1248 | intr_iob = PCPPMU_V3_INT_IOB; | |
1249 | } else { | |
1250 | intr_mcu = PCPPMU_INT_MCU; | |
1251 | intr_mcb = PCPPMU_INT_MCB; | |
1252 | intr_l3c = PCPPMU_INT_L3C; | |
1253 | intr_iob = PCPPMU_INT_IOB; | |
1254 | } | |
1255 | if (val & intr_mcu) { | |
832c927d TN |
1256 | list_for_each_entry(ctx, &xgene_pmu->mcpmus, next) { |
1257 | _xgene_pmu_isr(irq, ctx->pmu_dev); | |
1258 | } | |
1259 | } | |
c0f7f7ac | 1260 | if (val & intr_mcb) { |
832c927d TN |
1261 | list_for_each_entry(ctx, &xgene_pmu->mcbpmus, next) { |
1262 | _xgene_pmu_isr(irq, ctx->pmu_dev); | |
1263 | } | |
1264 | } | |
c0f7f7ac | 1265 | if (val & intr_l3c) { |
832c927d TN |
1266 | list_for_each_entry(ctx, &xgene_pmu->l3cpmus, next) { |
1267 | _xgene_pmu_isr(irq, ctx->pmu_dev); | |
1268 | } | |
1269 | } | |
c0f7f7ac | 1270 | if (val & intr_iob) { |
832c927d TN |
1271 | list_for_each_entry(ctx, &xgene_pmu->iobpmus, next) { |
1272 | _xgene_pmu_isr(irq, ctx->pmu_dev); | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | raw_spin_unlock_irqrestore(&xgene_pmu->lock, flags); | |
1277 | ||
1278 | return IRQ_HANDLED; | |
1279 | } | |
1280 | ||
c0f7f7ac HT |
1281 | static int acpi_pmu_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu, |
1282 | struct platform_device *pdev) | |
832c927d TN |
1283 | { |
1284 | void __iomem *csw_csr, *mcba_csr, *mcbb_csr; | |
832c927d TN |
1285 | unsigned int reg; |
1286 | ||
7fdd7f7c | 1287 | csw_csr = devm_platform_ioremap_resource(pdev, 1); |
832c927d TN |
1288 | if (IS_ERR(csw_csr)) { |
1289 | dev_err(&pdev->dev, "ioremap failed for CSW CSR resource\n"); | |
1290 | return PTR_ERR(csw_csr); | |
1291 | } | |
1292 | ||
7fdd7f7c | 1293 | mcba_csr = devm_platform_ioremap_resource(pdev, 2); |
832c927d TN |
1294 | if (IS_ERR(mcba_csr)) { |
1295 | dev_err(&pdev->dev, "ioremap failed for MCBA CSR resource\n"); | |
1296 | return PTR_ERR(mcba_csr); | |
1297 | } | |
1298 | ||
7fdd7f7c | 1299 | mcbb_csr = devm_platform_ioremap_resource(pdev, 3); |
832c927d TN |
1300 | if (IS_ERR(mcbb_csr)) { |
1301 | dev_err(&pdev->dev, "ioremap failed for MCBB CSR resource\n"); | |
1302 | return PTR_ERR(mcbb_csr); | |
1303 | } | |
1304 | ||
c0f7f7ac HT |
1305 | xgene_pmu->l3c_active_mask = 0x1; |
1306 | ||
832c927d TN |
1307 | reg = readl(csw_csr + CSW_CSWCR); |
1308 | if (reg & CSW_CSWCR_DUALMCB_MASK) { | |
1309 | /* Dual MCB active */ | |
1310 | xgene_pmu->mcb_active_mask = 0x3; | |
1311 | /* Probe all active MC(s) */ | |
1312 | reg = readl(mcbb_csr + CSW_CSWCR); | |
1313 | xgene_pmu->mc_active_mask = | |
1314 | (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0xF : 0x5; | |
1315 | } else { | |
1316 | /* Single MCB active */ | |
1317 | xgene_pmu->mcb_active_mask = 0x1; | |
1318 | /* Probe all active MC(s) */ | |
1319 | reg = readl(mcba_csr + CSW_CSWCR); | |
1320 | xgene_pmu->mc_active_mask = | |
1321 | (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0x3 : 0x1; | |
1322 | } | |
1323 | ||
1324 | return 0; | |
1325 | } | |
1326 | ||
c0f7f7ac HT |
1327 | static int acpi_pmu_v3_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu, |
1328 | struct platform_device *pdev) | |
1329 | { | |
1330 | void __iomem *csw_csr; | |
c0f7f7ac HT |
1331 | unsigned int reg; |
1332 | u32 mcb0routing; | |
1333 | u32 mcb1routing; | |
1334 | ||
7fdd7f7c | 1335 | csw_csr = devm_platform_ioremap_resource(pdev, 1); |
c0f7f7ac HT |
1336 | if (IS_ERR(csw_csr)) { |
1337 | dev_err(&pdev->dev, "ioremap failed for CSW CSR resource\n"); | |
1338 | return PTR_ERR(csw_csr); | |
1339 | } | |
1340 | ||
1341 | reg = readl(csw_csr + CSW_CSWCR); | |
1342 | mcb0routing = CSW_CSWCR_MCB0_ROUTING(reg); | |
1343 | mcb1routing = CSW_CSWCR_MCB1_ROUTING(reg); | |
1344 | if (reg & CSW_CSWCR_DUALMCB_MASK) { | |
1345 | /* Dual MCB active */ | |
1346 | xgene_pmu->mcb_active_mask = 0x3; | |
1347 | /* Probe all active L3C(s), maximum is 8 */ | |
1348 | xgene_pmu->l3c_active_mask = 0xFF; | |
1349 | /* Probe all active MC(s), maximum is 8 */ | |
1350 | if ((mcb0routing == 0x2) && (mcb1routing == 0x2)) | |
1351 | xgene_pmu->mc_active_mask = 0xFF; | |
1352 | else if ((mcb0routing == 0x1) && (mcb1routing == 0x1)) | |
1353 | xgene_pmu->mc_active_mask = 0x33; | |
1354 | else | |
1355 | xgene_pmu->mc_active_mask = 0x11; | |
1356 | } else { | |
1357 | /* Single MCB active */ | |
1358 | xgene_pmu->mcb_active_mask = 0x1; | |
1359 | /* Probe all active L3C(s), maximum is 4 */ | |
1360 | xgene_pmu->l3c_active_mask = 0x0F; | |
1361 | /* Probe all active MC(s), maximum is 4 */ | |
1362 | if (mcb0routing == 0x2) | |
1363 | xgene_pmu->mc_active_mask = 0x0F; | |
1364 | else if (mcb0routing == 0x1) | |
1365 | xgene_pmu->mc_active_mask = 0x03; | |
1366 | else | |
1367 | xgene_pmu->mc_active_mask = 0x01; | |
1368 | } | |
1369 | ||
1370 | return 0; | |
1371 | } | |
1372 | ||
1373 | static int fdt_pmu_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu, | |
1374 | struct platform_device *pdev) | |
832c927d TN |
1375 | { |
1376 | struct regmap *csw_map, *mcba_map, *mcbb_map; | |
1377 | struct device_node *np = pdev->dev.of_node; | |
1378 | unsigned int reg; | |
1379 | ||
1380 | csw_map = syscon_regmap_lookup_by_phandle(np, "regmap-csw"); | |
1381 | if (IS_ERR(csw_map)) { | |
1382 | dev_err(&pdev->dev, "unable to get syscon regmap csw\n"); | |
1383 | return PTR_ERR(csw_map); | |
1384 | } | |
1385 | ||
1386 | mcba_map = syscon_regmap_lookup_by_phandle(np, "regmap-mcba"); | |
1387 | if (IS_ERR(mcba_map)) { | |
1388 | dev_err(&pdev->dev, "unable to get syscon regmap mcba\n"); | |
1389 | return PTR_ERR(mcba_map); | |
1390 | } | |
1391 | ||
1392 | mcbb_map = syscon_regmap_lookup_by_phandle(np, "regmap-mcbb"); | |
1393 | if (IS_ERR(mcbb_map)) { | |
1394 | dev_err(&pdev->dev, "unable to get syscon regmap mcbb\n"); | |
1395 | return PTR_ERR(mcbb_map); | |
1396 | } | |
1397 | ||
c0f7f7ac | 1398 | xgene_pmu->l3c_active_mask = 0x1; |
832c927d TN |
1399 | if (regmap_read(csw_map, CSW_CSWCR, ®)) |
1400 | return -EINVAL; | |
1401 | ||
1402 | if (reg & CSW_CSWCR_DUALMCB_MASK) { | |
1403 | /* Dual MCB active */ | |
1404 | xgene_pmu->mcb_active_mask = 0x3; | |
1405 | /* Probe all active MC(s) */ | |
1406 | if (regmap_read(mcbb_map, MCBADDRMR, ®)) | |
1407 | return 0; | |
1408 | xgene_pmu->mc_active_mask = | |
1409 | (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0xF : 0x5; | |
1410 | } else { | |
1411 | /* Single MCB active */ | |
1412 | xgene_pmu->mcb_active_mask = 0x1; | |
1413 | /* Probe all active MC(s) */ | |
1414 | if (regmap_read(mcba_map, MCBADDRMR, ®)) | |
1415 | return 0; | |
1416 | xgene_pmu->mc_active_mask = | |
1417 | (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0x3 : 0x1; | |
1418 | } | |
1419 | ||
1420 | return 0; | |
1421 | } | |
1422 | ||
c0f7f7ac HT |
1423 | static int xgene_pmu_probe_active_mcb_mcu_l3c(struct xgene_pmu *xgene_pmu, |
1424 | struct platform_device *pdev) | |
832c927d | 1425 | { |
c0f7f7ac HT |
1426 | if (has_acpi_companion(&pdev->dev)) { |
1427 | if (xgene_pmu->version == PCP_PMU_V3) | |
1428 | return acpi_pmu_v3_probe_active_mcb_mcu_l3c(xgene_pmu, | |
1429 | pdev); | |
1430 | else | |
1431 | return acpi_pmu_probe_active_mcb_mcu_l3c(xgene_pmu, | |
1432 | pdev); | |
1433 | } | |
1434 | return fdt_pmu_probe_active_mcb_mcu_l3c(xgene_pmu, pdev); | |
832c927d TN |
1435 | } |
1436 | ||
1437 | static char *xgene_pmu_dev_name(struct device *dev, u32 type, int id) | |
1438 | { | |
1439 | switch (type) { | |
1440 | case PMU_TYPE_L3C: | |
1441 | return devm_kasprintf(dev, GFP_KERNEL, "l3c%d", id); | |
1442 | case PMU_TYPE_IOB: | |
1443 | return devm_kasprintf(dev, GFP_KERNEL, "iob%d", id); | |
c0f7f7ac | 1444 | case PMU_TYPE_IOB_SLOW: |
a45fc268 | 1445 | return devm_kasprintf(dev, GFP_KERNEL, "iob_slow%d", id); |
832c927d TN |
1446 | case PMU_TYPE_MCB: |
1447 | return devm_kasprintf(dev, GFP_KERNEL, "mcb%d", id); | |
1448 | case PMU_TYPE_MC: | |
1449 | return devm_kasprintf(dev, GFP_KERNEL, "mc%d", id); | |
1450 | default: | |
1451 | return devm_kasprintf(dev, GFP_KERNEL, "unknown"); | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | #if defined(CONFIG_ACPI) | |
1456 | static int acpi_pmu_dev_add_resource(struct acpi_resource *ares, void *data) | |
1457 | { | |
1458 | struct resource *res = data; | |
1459 | ||
1460 | if (ares->type == ACPI_RESOURCE_TYPE_FIXED_MEMORY32) | |
1461 | acpi_dev_resource_memory(ares, res); | |
1462 | ||
1463 | /* Always tell the ACPI core to skip this resource */ | |
1464 | return 1; | |
1465 | } | |
1466 | ||
1467 | static struct | |
1468 | xgene_pmu_dev_ctx *acpi_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu, | |
1469 | struct acpi_device *adev, u32 type) | |
1470 | { | |
1471 | struct device *dev = xgene_pmu->dev; | |
1472 | struct list_head resource_list; | |
1473 | struct xgene_pmu_dev_ctx *ctx; | |
1474 | const union acpi_object *obj; | |
1475 | struct hw_pmu_info *inf; | |
1476 | void __iomem *dev_csr; | |
1477 | struct resource res; | |
1478 | int enable_bit; | |
1479 | int rc; | |
1480 | ||
1481 | ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); | |
1482 | if (!ctx) | |
1483 | return NULL; | |
1484 | ||
1485 | INIT_LIST_HEAD(&resource_list); | |
1486 | rc = acpi_dev_get_resources(adev, &resource_list, | |
1487 | acpi_pmu_dev_add_resource, &res); | |
1488 | acpi_dev_free_resource_list(&resource_list); | |
9a1a1f40 | 1489 | if (rc < 0) { |
832c927d | 1490 | dev_err(dev, "PMU type %d: No resource address found\n", type); |
c1be2ddb | 1491 | return NULL; |
832c927d TN |
1492 | } |
1493 | ||
1494 | dev_csr = devm_ioremap_resource(dev, &res); | |
1495 | if (IS_ERR(dev_csr)) { | |
1496 | dev_err(dev, "PMU type %d: Fail to map resource\n", type); | |
c1be2ddb | 1497 | return NULL; |
832c927d TN |
1498 | } |
1499 | ||
1500 | /* A PMU device node without enable-bit-index is always enabled */ | |
1501 | rc = acpi_dev_get_property(adev, "enable-bit-index", | |
1502 | ACPI_TYPE_INTEGER, &obj); | |
1503 | if (rc < 0) | |
1504 | enable_bit = 0; | |
1505 | else | |
1506 | enable_bit = (int) obj->integer.value; | |
1507 | ||
1508 | ctx->name = xgene_pmu_dev_name(dev, type, enable_bit); | |
1509 | if (!ctx->name) { | |
1510 | dev_err(dev, "PMU type %d: Fail to get device name\n", type); | |
c1be2ddb | 1511 | return NULL; |
832c927d TN |
1512 | } |
1513 | inf = &ctx->inf; | |
1514 | inf->type = type; | |
1515 | inf->csr = dev_csr; | |
1516 | inf->enable_mask = 1 << enable_bit; | |
1517 | ||
1518 | return ctx; | |
832c927d TN |
1519 | } |
1520 | ||
838955e2 HT |
1521 | static const struct acpi_device_id xgene_pmu_acpi_type_match[] = { |
1522 | {"APMC0D5D", PMU_TYPE_L3C}, | |
1523 | {"APMC0D5E", PMU_TYPE_IOB}, | |
1524 | {"APMC0D5F", PMU_TYPE_MCB}, | |
1525 | {"APMC0D60", PMU_TYPE_MC}, | |
c0f7f7ac HT |
1526 | {"APMC0D84", PMU_TYPE_L3C}, |
1527 | {"APMC0D85", PMU_TYPE_IOB}, | |
1528 | {"APMC0D86", PMU_TYPE_IOB_SLOW}, | |
1529 | {"APMC0D87", PMU_TYPE_MCB}, | |
1530 | {"APMC0D88", PMU_TYPE_MC}, | |
838955e2 HT |
1531 | {}, |
1532 | }; | |
1533 | ||
1534 | static const struct acpi_device_id *xgene_pmu_acpi_match_type( | |
1535 | const struct acpi_device_id *ids, | |
1536 | struct acpi_device *adev) | |
1537 | { | |
1538 | const struct acpi_device_id *match_id = NULL; | |
1539 | const struct acpi_device_id *id; | |
1540 | ||
1541 | for (id = ids; id->id[0] || id->cls; id++) { | |
1542 | if (!acpi_match_device_ids(adev, id)) | |
1543 | match_id = id; | |
1544 | else if (match_id) | |
1545 | break; | |
1546 | } | |
1547 | ||
1548 | return match_id; | |
1549 | } | |
1550 | ||
832c927d TN |
1551 | static acpi_status acpi_pmu_dev_add(acpi_handle handle, u32 level, |
1552 | void *data, void **return_value) | |
1553 | { | |
838955e2 | 1554 | const struct acpi_device_id *acpi_id; |
832c927d TN |
1555 | struct xgene_pmu *xgene_pmu = data; |
1556 | struct xgene_pmu_dev_ctx *ctx; | |
1557 | struct acpi_device *adev; | |
1558 | ||
1559 | if (acpi_bus_get_device(handle, &adev)) | |
1560 | return AE_OK; | |
1561 | if (acpi_bus_get_status(adev) || !adev->status.present) | |
1562 | return AE_OK; | |
1563 | ||
838955e2 HT |
1564 | acpi_id = xgene_pmu_acpi_match_type(xgene_pmu_acpi_type_match, adev); |
1565 | if (!acpi_id) | |
1566 | return AE_OK; | |
832c927d | 1567 | |
838955e2 | 1568 | ctx = acpi_get_pmu_hw_inf(xgene_pmu, adev, (u32)acpi_id->driver_data); |
832c927d TN |
1569 | if (!ctx) |
1570 | return AE_OK; | |
1571 | ||
1572 | if (xgene_pmu_dev_add(xgene_pmu, ctx)) { | |
1573 | /* Can't add the PMU device, skip it */ | |
1574 | devm_kfree(xgene_pmu->dev, ctx); | |
1575 | return AE_OK; | |
1576 | } | |
1577 | ||
1578 | switch (ctx->inf.type) { | |
1579 | case PMU_TYPE_L3C: | |
1580 | list_add(&ctx->next, &xgene_pmu->l3cpmus); | |
1581 | break; | |
1582 | case PMU_TYPE_IOB: | |
1583 | list_add(&ctx->next, &xgene_pmu->iobpmus); | |
1584 | break; | |
c0f7f7ac HT |
1585 | case PMU_TYPE_IOB_SLOW: |
1586 | list_add(&ctx->next, &xgene_pmu->iobpmus); | |
1587 | break; | |
832c927d TN |
1588 | case PMU_TYPE_MCB: |
1589 | list_add(&ctx->next, &xgene_pmu->mcbpmus); | |
1590 | break; | |
1591 | case PMU_TYPE_MC: | |
1592 | list_add(&ctx->next, &xgene_pmu->mcpmus); | |
1593 | break; | |
1594 | } | |
1595 | return AE_OK; | |
1596 | } | |
1597 | ||
1598 | static int acpi_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu, | |
1599 | struct platform_device *pdev) | |
1600 | { | |
1601 | struct device *dev = xgene_pmu->dev; | |
1602 | acpi_handle handle; | |
1603 | acpi_status status; | |
1604 | ||
1605 | handle = ACPI_HANDLE(dev); | |
1606 | if (!handle) | |
1607 | return -EINVAL; | |
1608 | ||
1609 | status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1, | |
1610 | acpi_pmu_dev_add, NULL, xgene_pmu, NULL); | |
1611 | if (ACPI_FAILURE(status)) { | |
1612 | dev_err(dev, "failed to probe PMU devices\n"); | |
1613 | return -ENODEV; | |
1614 | } | |
1615 | ||
1616 | return 0; | |
1617 | } | |
1618 | #else | |
1619 | static int acpi_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu, | |
1620 | struct platform_device *pdev) | |
1621 | { | |
1622 | return 0; | |
1623 | } | |
1624 | #endif | |
1625 | ||
1626 | static struct | |
1627 | xgene_pmu_dev_ctx *fdt_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu, | |
1628 | struct device_node *np, u32 type) | |
1629 | { | |
1630 | struct device *dev = xgene_pmu->dev; | |
1631 | struct xgene_pmu_dev_ctx *ctx; | |
1632 | struct hw_pmu_info *inf; | |
1633 | void __iomem *dev_csr; | |
1634 | struct resource res; | |
1635 | int enable_bit; | |
832c927d TN |
1636 | |
1637 | ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); | |
1638 | if (!ctx) | |
1639 | return NULL; | |
c1be2ddb TN |
1640 | |
1641 | if (of_address_to_resource(np, 0, &res) < 0) { | |
832c927d | 1642 | dev_err(dev, "PMU type %d: No resource address found\n", type); |
c1be2ddb | 1643 | return NULL; |
832c927d | 1644 | } |
c1be2ddb | 1645 | |
832c927d TN |
1646 | dev_csr = devm_ioremap_resource(dev, &res); |
1647 | if (IS_ERR(dev_csr)) { | |
1648 | dev_err(dev, "PMU type %d: Fail to map resource\n", type); | |
c1be2ddb | 1649 | return NULL; |
832c927d TN |
1650 | } |
1651 | ||
1652 | /* A PMU device node without enable-bit-index is always enabled */ | |
1653 | if (of_property_read_u32(np, "enable-bit-index", &enable_bit)) | |
1654 | enable_bit = 0; | |
1655 | ||
1656 | ctx->name = xgene_pmu_dev_name(dev, type, enable_bit); | |
1657 | if (!ctx->name) { | |
1658 | dev_err(dev, "PMU type %d: Fail to get device name\n", type); | |
c1be2ddb | 1659 | return NULL; |
832c927d | 1660 | } |
c1be2ddb | 1661 | |
832c927d TN |
1662 | inf = &ctx->inf; |
1663 | inf->type = type; | |
1664 | inf->csr = dev_csr; | |
1665 | inf->enable_mask = 1 << enable_bit; | |
1666 | ||
1667 | return ctx; | |
832c927d TN |
1668 | } |
1669 | ||
1670 | static int fdt_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu, | |
1671 | struct platform_device *pdev) | |
1672 | { | |
1673 | struct xgene_pmu_dev_ctx *ctx; | |
1674 | struct device_node *np; | |
1675 | ||
1676 | for_each_child_of_node(pdev->dev.of_node, np) { | |
1677 | if (!of_device_is_available(np)) | |
1678 | continue; | |
1679 | ||
1680 | if (of_device_is_compatible(np, "apm,xgene-pmu-l3c")) | |
1681 | ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_L3C); | |
1682 | else if (of_device_is_compatible(np, "apm,xgene-pmu-iob")) | |
1683 | ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_IOB); | |
1684 | else if (of_device_is_compatible(np, "apm,xgene-pmu-mcb")) | |
1685 | ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_MCB); | |
1686 | else if (of_device_is_compatible(np, "apm,xgene-pmu-mc")) | |
1687 | ctx = fdt_get_pmu_hw_inf(xgene_pmu, np, PMU_TYPE_MC); | |
1688 | else | |
1689 | ctx = NULL; | |
1690 | ||
1691 | if (!ctx) | |
1692 | continue; | |
1693 | ||
1694 | if (xgene_pmu_dev_add(xgene_pmu, ctx)) { | |
1695 | /* Can't add the PMU device, skip it */ | |
1696 | devm_kfree(xgene_pmu->dev, ctx); | |
1697 | continue; | |
1698 | } | |
1699 | ||
1700 | switch (ctx->inf.type) { | |
1701 | case PMU_TYPE_L3C: | |
1702 | list_add(&ctx->next, &xgene_pmu->l3cpmus); | |
1703 | break; | |
1704 | case PMU_TYPE_IOB: | |
1705 | list_add(&ctx->next, &xgene_pmu->iobpmus); | |
1706 | break; | |
c0f7f7ac HT |
1707 | case PMU_TYPE_IOB_SLOW: |
1708 | list_add(&ctx->next, &xgene_pmu->iobpmus); | |
1709 | break; | |
832c927d TN |
1710 | case PMU_TYPE_MCB: |
1711 | list_add(&ctx->next, &xgene_pmu->mcbpmus); | |
1712 | break; | |
1713 | case PMU_TYPE_MC: | |
1714 | list_add(&ctx->next, &xgene_pmu->mcpmus); | |
1715 | break; | |
1716 | } | |
1717 | } | |
1718 | ||
1719 | return 0; | |
1720 | } | |
1721 | ||
1722 | static int xgene_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu, | |
1723 | struct platform_device *pdev) | |
1724 | { | |
1725 | if (has_acpi_companion(&pdev->dev)) | |
1726 | return acpi_pmu_probe_pmu_dev(xgene_pmu, pdev); | |
1727 | return fdt_pmu_probe_pmu_dev(xgene_pmu, pdev); | |
1728 | } | |
1729 | ||
1730 | static const struct xgene_pmu_data xgene_pmu_data = { | |
1731 | .id = PCP_PMU_V1, | |
1732 | }; | |
1733 | ||
1734 | static const struct xgene_pmu_data xgene_pmu_v2_data = { | |
1735 | .id = PCP_PMU_V2, | |
1736 | }; | |
1737 | ||
e35e0a04 HT |
1738 | static const struct xgene_pmu_ops xgene_pmu_ops = { |
1739 | .mask_int = xgene_pmu_mask_int, | |
1740 | .unmask_int = xgene_pmu_unmask_int, | |
1741 | .read_counter = xgene_pmu_read_counter32, | |
1742 | .write_counter = xgene_pmu_write_counter32, | |
1743 | .write_evttype = xgene_pmu_write_evttype, | |
1744 | .write_agentmsk = xgene_pmu_write_agentmsk, | |
1745 | .write_agent1msk = xgene_pmu_write_agent1msk, | |
1746 | .enable_counter = xgene_pmu_enable_counter, | |
1747 | .disable_counter = xgene_pmu_disable_counter, | |
1748 | .enable_counter_int = xgene_pmu_enable_counter_int, | |
1749 | .disable_counter_int = xgene_pmu_disable_counter_int, | |
1750 | .reset_counters = xgene_pmu_reset_counters, | |
1751 | .start_counters = xgene_pmu_start_counters, | |
1752 | .stop_counters = xgene_pmu_stop_counters, | |
1753 | }; | |
1754 | ||
c0f7f7ac HT |
1755 | static const struct xgene_pmu_ops xgene_pmu_v3_ops = { |
1756 | .mask_int = xgene_pmu_v3_mask_int, | |
1757 | .unmask_int = xgene_pmu_v3_unmask_int, | |
1758 | .read_counter = xgene_pmu_read_counter64, | |
1759 | .write_counter = xgene_pmu_write_counter64, | |
1760 | .write_evttype = xgene_pmu_write_evttype, | |
1761 | .write_agentmsk = xgene_pmu_v3_write_agentmsk, | |
1762 | .write_agent1msk = xgene_pmu_v3_write_agent1msk, | |
1763 | .enable_counter = xgene_pmu_enable_counter, | |
1764 | .disable_counter = xgene_pmu_disable_counter, | |
1765 | .enable_counter_int = xgene_pmu_enable_counter_int, | |
1766 | .disable_counter_int = xgene_pmu_disable_counter_int, | |
1767 | .reset_counters = xgene_pmu_reset_counters, | |
1768 | .start_counters = xgene_pmu_start_counters, | |
1769 | .stop_counters = xgene_pmu_stop_counters, | |
1770 | }; | |
1771 | ||
832c927d TN |
1772 | static const struct of_device_id xgene_pmu_of_match[] = { |
1773 | { .compatible = "apm,xgene-pmu", .data = &xgene_pmu_data }, | |
1774 | { .compatible = "apm,xgene-pmu-v2", .data = &xgene_pmu_v2_data }, | |
1775 | {}, | |
1776 | }; | |
1777 | MODULE_DEVICE_TABLE(of, xgene_pmu_of_match); | |
1778 | #ifdef CONFIG_ACPI | |
1779 | static const struct acpi_device_id xgene_pmu_acpi_match[] = { | |
1780 | {"APMC0D5B", PCP_PMU_V1}, | |
1781 | {"APMC0D5C", PCP_PMU_V2}, | |
c0f7f7ac | 1782 | {"APMC0D83", PCP_PMU_V3}, |
832c927d TN |
1783 | {}, |
1784 | }; | |
1785 | MODULE_DEVICE_TABLE(acpi, xgene_pmu_acpi_match); | |
1786 | #endif | |
1787 | ||
cbb72a3c HT |
1788 | static int xgene_pmu_online_cpu(unsigned int cpu, struct hlist_node *node) |
1789 | { | |
1790 | struct xgene_pmu *xgene_pmu = hlist_entry_safe(node, struct xgene_pmu, | |
1791 | node); | |
1792 | ||
1793 | if (cpumask_empty(&xgene_pmu->cpu)) | |
1794 | cpumask_set_cpu(cpu, &xgene_pmu->cpu); | |
1795 | ||
1796 | /* Overflow interrupt also should use the same CPU */ | |
1797 | WARN_ON(irq_set_affinity(xgene_pmu->irq, &xgene_pmu->cpu)); | |
1798 | ||
1799 | return 0; | |
1800 | } | |
1801 | ||
1802 | static int xgene_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node) | |
1803 | { | |
1804 | struct xgene_pmu *xgene_pmu = hlist_entry_safe(node, struct xgene_pmu, | |
1805 | node); | |
1806 | struct xgene_pmu_dev_ctx *ctx; | |
1807 | unsigned int target; | |
1808 | ||
1809 | if (!cpumask_test_and_clear_cpu(cpu, &xgene_pmu->cpu)) | |
1810 | return 0; | |
1811 | target = cpumask_any_but(cpu_online_mask, cpu); | |
1812 | if (target >= nr_cpu_ids) | |
1813 | return 0; | |
1814 | ||
1815 | list_for_each_entry(ctx, &xgene_pmu->mcpmus, next) { | |
1816 | perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target); | |
1817 | } | |
1818 | list_for_each_entry(ctx, &xgene_pmu->mcbpmus, next) { | |
1819 | perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target); | |
1820 | } | |
1821 | list_for_each_entry(ctx, &xgene_pmu->l3cpmus, next) { | |
1822 | perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target); | |
1823 | } | |
1824 | list_for_each_entry(ctx, &xgene_pmu->iobpmus, next) { | |
1825 | perf_pmu_migrate_context(&ctx->pmu_dev->pmu, cpu, target); | |
1826 | } | |
1827 | ||
1828 | cpumask_set_cpu(target, &xgene_pmu->cpu); | |
1829 | /* Overflow interrupt also should use the same CPU */ | |
1830 | WARN_ON(irq_set_affinity(xgene_pmu->irq, &xgene_pmu->cpu)); | |
1831 | ||
1832 | return 0; | |
1833 | } | |
1834 | ||
832c927d TN |
1835 | static int xgene_pmu_probe(struct platform_device *pdev) |
1836 | { | |
1837 | const struct xgene_pmu_data *dev_data; | |
1838 | const struct of_device_id *of_id; | |
1839 | struct xgene_pmu *xgene_pmu; | |
1840 | struct resource *res; | |
1841 | int irq, rc; | |
1842 | int version; | |
1843 | ||
cbb72a3c HT |
1844 | /* Install a hook to update the reader CPU in case it goes offline */ |
1845 | rc = cpuhp_setup_state_multi(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE, | |
1846 | "CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE", | |
1847 | xgene_pmu_online_cpu, | |
1848 | xgene_pmu_offline_cpu); | |
1849 | if (rc) | |
1850 | return rc; | |
1851 | ||
832c927d TN |
1852 | xgene_pmu = devm_kzalloc(&pdev->dev, sizeof(*xgene_pmu), GFP_KERNEL); |
1853 | if (!xgene_pmu) | |
1854 | return -ENOMEM; | |
1855 | xgene_pmu->dev = &pdev->dev; | |
1856 | platform_set_drvdata(pdev, xgene_pmu); | |
1857 | ||
1858 | version = -EINVAL; | |
1859 | of_id = of_match_device(xgene_pmu_of_match, &pdev->dev); | |
1860 | if (of_id) { | |
1861 | dev_data = (const struct xgene_pmu_data *) of_id->data; | |
1862 | version = dev_data->id; | |
1863 | } | |
1864 | ||
1865 | #ifdef CONFIG_ACPI | |
1866 | if (ACPI_COMPANION(&pdev->dev)) { | |
1867 | const struct acpi_device_id *acpi_id; | |
1868 | ||
1869 | acpi_id = acpi_match_device(xgene_pmu_acpi_match, &pdev->dev); | |
1870 | if (acpi_id) | |
1871 | version = (int) acpi_id->driver_data; | |
1872 | } | |
1873 | #endif | |
1874 | if (version < 0) | |
1875 | return -ENODEV; | |
1876 | ||
c0f7f7ac HT |
1877 | if (version == PCP_PMU_V3) |
1878 | xgene_pmu->ops = &xgene_pmu_v3_ops; | |
1879 | else | |
1880 | xgene_pmu->ops = &xgene_pmu_ops; | |
e35e0a04 | 1881 | |
832c927d TN |
1882 | INIT_LIST_HEAD(&xgene_pmu->l3cpmus); |
1883 | INIT_LIST_HEAD(&xgene_pmu->iobpmus); | |
1884 | INIT_LIST_HEAD(&xgene_pmu->mcbpmus); | |
1885 | INIT_LIST_HEAD(&xgene_pmu->mcpmus); | |
1886 | ||
1887 | xgene_pmu->version = version; | |
1888 | dev_info(&pdev->dev, "X-Gene PMU version %d\n", xgene_pmu->version); | |
1889 | ||
1890 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1891 | xgene_pmu->pcppmu_csr = devm_ioremap_resource(&pdev->dev, res); | |
1892 | if (IS_ERR(xgene_pmu->pcppmu_csr)) { | |
1893 | dev_err(&pdev->dev, "ioremap failed for PCP PMU resource\n"); | |
c1be2ddb | 1894 | return PTR_ERR(xgene_pmu->pcppmu_csr); |
832c927d TN |
1895 | } |
1896 | ||
1897 | irq = platform_get_irq(pdev, 0); | |
228f855f | 1898 | if (irq < 0) |
c1be2ddb | 1899 | return -EINVAL; |
cbb72a3c | 1900 | |
832c927d TN |
1901 | rc = devm_request_irq(&pdev->dev, irq, xgene_pmu_isr, |
1902 | IRQF_NOBALANCING | IRQF_NO_THREAD, | |
1903 | dev_name(&pdev->dev), xgene_pmu); | |
1904 | if (rc) { | |
1905 | dev_err(&pdev->dev, "Could not request IRQ %d\n", irq); | |
c1be2ddb | 1906 | return rc; |
832c927d TN |
1907 | } |
1908 | ||
cbb72a3c HT |
1909 | xgene_pmu->irq = irq; |
1910 | ||
832c927d TN |
1911 | raw_spin_lock_init(&xgene_pmu->lock); |
1912 | ||
1913 | /* Check for active MCBs and MCUs */ | |
c0f7f7ac | 1914 | rc = xgene_pmu_probe_active_mcb_mcu_l3c(xgene_pmu, pdev); |
832c927d TN |
1915 | if (rc) { |
1916 | dev_warn(&pdev->dev, "Unknown MCB/MCU active status\n"); | |
1917 | xgene_pmu->mcb_active_mask = 0x1; | |
1918 | xgene_pmu->mc_active_mask = 0x1; | |
1919 | } | |
1920 | ||
cbb72a3c HT |
1921 | /* Add this instance to the list used by the hotplug callback */ |
1922 | rc = cpuhp_state_add_instance(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE, | |
1923 | &xgene_pmu->node); | |
832c927d | 1924 | if (rc) { |
cbb72a3c | 1925 | dev_err(&pdev->dev, "Error %d registering hotplug", rc); |
c1be2ddb | 1926 | return rc; |
832c927d TN |
1927 | } |
1928 | ||
1929 | /* Walk through the tree for all PMU perf devices */ | |
1930 | rc = xgene_pmu_probe_pmu_dev(xgene_pmu, pdev); | |
1931 | if (rc) { | |
1932 | dev_err(&pdev->dev, "No PMU perf devices found!\n"); | |
cbb72a3c | 1933 | goto out_unregister; |
832c927d TN |
1934 | } |
1935 | ||
1936 | /* Enable interrupt */ | |
e35e0a04 | 1937 | xgene_pmu->ops->unmask_int(xgene_pmu); |
832c927d TN |
1938 | |
1939 | return 0; | |
cbb72a3c HT |
1940 | |
1941 | out_unregister: | |
1942 | cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE, | |
1943 | &xgene_pmu->node); | |
1944 | return rc; | |
832c927d TN |
1945 | } |
1946 | ||
1947 | static void | |
1948 | xgene_pmu_dev_cleanup(struct xgene_pmu *xgene_pmu, struct list_head *pmus) | |
1949 | { | |
1950 | struct xgene_pmu_dev_ctx *ctx; | |
832c927d TN |
1951 | |
1952 | list_for_each_entry(ctx, pmus, next) { | |
c1be2ddb | 1953 | perf_pmu_unregister(&ctx->pmu_dev->pmu); |
832c927d TN |
1954 | } |
1955 | } | |
1956 | ||
1957 | static int xgene_pmu_remove(struct platform_device *pdev) | |
1958 | { | |
1959 | struct xgene_pmu *xgene_pmu = dev_get_drvdata(&pdev->dev); | |
1960 | ||
1961 | xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->l3cpmus); | |
1962 | xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->iobpmus); | |
1963 | xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->mcbpmus); | |
1964 | xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->mcpmus); | |
cbb72a3c HT |
1965 | cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE, |
1966 | &xgene_pmu->node); | |
832c927d | 1967 | |
832c927d TN |
1968 | return 0; |
1969 | } | |
1970 | ||
1971 | static struct platform_driver xgene_pmu_driver = { | |
1972 | .probe = xgene_pmu_probe, | |
1973 | .remove = xgene_pmu_remove, | |
1974 | .driver = { | |
1975 | .name = "xgene-pmu", | |
1976 | .of_match_table = xgene_pmu_of_match, | |
1977 | .acpi_match_table = ACPI_PTR(xgene_pmu_acpi_match), | |
1978 | }, | |
1979 | }; | |
1980 | ||
1981 | builtin_platform_driver(xgene_pmu_driver); |