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24f90d66 | 1 | // SPDX-License-Identifier: MIT |
3e7abf81 | 2 | /* |
3e7abf81 AS |
3 | * Copyright © 2019 Intel Corporation |
4 | */ | |
5 | ||
01fabda8 LDM |
6 | #include <linux/string_helpers.h> |
7 | ||
03c7918d | 8 | #include <drm/intel/i915_drm.h> |
83d2bdb6 | 9 | |
acc855d3 | 10 | #include "display/intel_display.h" |
2b874a02 | 11 | #include "display/intel_display_irq.h" |
3e7abf81 | 12 | #include "i915_drv.h" |
80dfdeb7 | 13 | #include "i915_irq.h" |
476f62b8 | 14 | #include "i915_reg.h" |
b3786b29 | 15 | #include "intel_breadcrumbs.h" |
3e7abf81 | 16 | #include "intel_gt.h" |
9c878557 | 17 | #include "intel_gt_clock_utils.h" |
3e7abf81 | 18 | #include "intel_gt_irq.h" |
c1be6162 | 19 | #include "intel_gt_pm.h" |
3e7abf81 | 20 | #include "intel_gt_pm_irq.h" |
c1be6162 | 21 | #include "intel_gt_print.h" |
0d6419e9 | 22 | #include "intel_gt_regs.h" |
e30e6c7b | 23 | #include "intel_mchbar_regs.h" |
4dd4375b | 24 | #include "intel_pcode.h" |
3e7abf81 | 25 | #include "intel_rps.h" |
1eecf31e | 26 | #include "vlv_sideband.h" |
3e7abf81 AS |
27 | #include "../../../platform/x86/intel_ips.h" |
28 | ||
36d516be CW |
29 | #define BUSY_MAX_EI 20u /* ms */ |
30 | ||
3e7abf81 AS |
31 | /* |
32 | * Lock protecting IPS related data structures | |
33 | */ | |
34 | static DEFINE_SPINLOCK(mchdev_lock); | |
35 | ||
36 | static struct intel_gt *rps_to_gt(struct intel_rps *rps) | |
37 | { | |
38 | return container_of(rps, struct intel_gt, rps); | |
39 | } | |
40 | ||
41 | static struct drm_i915_private *rps_to_i915(struct intel_rps *rps) | |
42 | { | |
43 | return rps_to_gt(rps)->i915; | |
44 | } | |
45 | ||
46 | static struct intel_uncore *rps_to_uncore(struct intel_rps *rps) | |
47 | { | |
48 | return rps_to_gt(rps)->uncore; | |
49 | } | |
50 | ||
41e5c17e VB |
51 | static struct intel_guc_slpc *rps_to_slpc(struct intel_rps *rps) |
52 | { | |
53 | struct intel_gt *gt = rps_to_gt(rps); | |
54 | ||
01b2b8cc | 55 | return >_to_guc(gt)->slpc; |
41e5c17e VB |
56 | } |
57 | ||
7ba79a67 VB |
58 | static bool rps_uses_slpc(struct intel_rps *rps) |
59 | { | |
60 | struct intel_gt *gt = rps_to_gt(rps); | |
61 | ||
62 | return intel_uc_uses_guc_slpc(>->uc); | |
63 | } | |
64 | ||
3e7abf81 AS |
65 | static u32 rps_pm_sanitize_mask(struct intel_rps *rps, u32 mask) |
66 | { | |
67 | return mask & ~rps->pm_intrmsk_mbz; | |
68 | } | |
69 | ||
9834dfef | 70 | static void set(struct intel_uncore *uncore, i915_reg_t reg, u32 val) |
35cc7f32 CW |
71 | { |
72 | intel_uncore_write_fw(uncore, reg, val); | |
73 | } | |
74 | ||
36d516be CW |
75 | static void rps_timer(struct timer_list *t) |
76 | { | |
77 | struct intel_rps *rps = from_timer(rps, t, timer); | |
848a4e5c | 78 | struct intel_gt *gt = rps_to_gt(rps); |
36d516be | 79 | struct intel_engine_cs *engine; |
5a15550e | 80 | ktime_t dt, last, timestamp; |
36d516be CW |
81 | enum intel_engine_id id; |
82 | s64 max_busy[3] = {}; | |
36d516be | 83 | |
5a15550e | 84 | timestamp = 0; |
848a4e5c | 85 | for_each_engine(engine, gt, id) { |
36d516be CW |
86 | s64 busy; |
87 | int i; | |
88 | ||
810b7ee3 | 89 | dt = intel_engine_get_busy_time(engine, ×tamp); |
36d516be CW |
90 | last = engine->stats.rps; |
91 | engine->stats.rps = dt; | |
92 | ||
93 | busy = ktime_to_ns(ktime_sub(dt, last)); | |
94 | for (i = 0; i < ARRAY_SIZE(max_busy); i++) { | |
95 | if (busy > max_busy[i]) | |
96 | swap(busy, max_busy[i]); | |
97 | } | |
98 | } | |
36d516be | 99 | last = rps->pm_timestamp; |
810b7ee3 | 100 | rps->pm_timestamp = timestamp; |
36d516be CW |
101 | |
102 | if (intel_rps_is_active(rps)) { | |
103 | s64 busy; | |
104 | int i; | |
105 | ||
810b7ee3 | 106 | dt = ktime_sub(timestamp, last); |
36d516be CW |
107 | |
108 | /* | |
109 | * Our goal is to evaluate each engine independently, so we run | |
110 | * at the lowest clocks required to sustain the heaviest | |
111 | * workload. However, a task may be split into sequential | |
112 | * dependent operations across a set of engines, such that | |
113 | * the independent contributions do not account for high load, | |
114 | * but overall the task is GPU bound. For example, consider | |
115 | * video decode on vcs followed by colour post-processing | |
116 | * on vecs, followed by general post-processing on rcs. | |
117 | * Since multi-engines being active does imply a single | |
118 | * continuous workload across all engines, we hedge our | |
119 | * bets by only contributing a factor of the distributed | |
120 | * load into our busyness calculation. | |
121 | */ | |
122 | busy = max_busy[0]; | |
123 | for (i = 1; i < ARRAY_SIZE(max_busy); i++) { | |
124 | if (!max_busy[i]) | |
125 | break; | |
126 | ||
127 | busy += div_u64(max_busy[i], 1 << i); | |
128 | } | |
848a4e5c | 129 | GT_TRACE(gt, |
36d516be CW |
130 | "busy:%lld [%d%%], max:[%lld, %lld, %lld], interval:%d\n", |
131 | busy, (int)div64_u64(100 * busy, dt), | |
132 | max_busy[0], max_busy[1], max_busy[2], | |
133 | rps->pm_interval); | |
134 | ||
135 | if (100 * busy > rps->power.up_threshold * dt && | |
136 | rps->cur_freq < rps->max_freq_softlimit) { | |
137 | rps->pm_iir |= GEN6_PM_RP_UP_THRESHOLD; | |
138 | rps->pm_interval = 1; | |
848a4e5c | 139 | queue_work(gt->i915->unordered_wq, &rps->work); |
36d516be CW |
140 | } else if (100 * busy < rps->power.down_threshold * dt && |
141 | rps->cur_freq > rps->min_freq_softlimit) { | |
142 | rps->pm_iir |= GEN6_PM_RP_DOWN_THRESHOLD; | |
143 | rps->pm_interval = 1; | |
848a4e5c | 144 | queue_work(gt->i915->unordered_wq, &rps->work); |
36d516be CW |
145 | } else { |
146 | rps->last_adj = 0; | |
147 | } | |
148 | ||
149 | mod_timer(&rps->timer, | |
150 | jiffies + msecs_to_jiffies(rps->pm_interval)); | |
151 | rps->pm_interval = min(rps->pm_interval * 2, BUSY_MAX_EI); | |
152 | } | |
153 | } | |
154 | ||
155 | static void rps_start_timer(struct intel_rps *rps) | |
156 | { | |
157 | rps->pm_timestamp = ktime_sub(ktime_get(), rps->pm_timestamp); | |
158 | rps->pm_interval = 1; | |
159 | mod_timer(&rps->timer, jiffies + 1); | |
160 | } | |
161 | ||
162 | static void rps_stop_timer(struct intel_rps *rps) | |
163 | { | |
164 | del_timer_sync(&rps->timer); | |
165 | rps->pm_timestamp = ktime_sub(ktime_get(), rps->pm_timestamp); | |
166 | cancel_work_sync(&rps->work); | |
167 | } | |
168 | ||
3e7abf81 AS |
169 | static u32 rps_pm_mask(struct intel_rps *rps, u8 val) |
170 | { | |
171 | u32 mask = 0; | |
172 | ||
173 | /* We use UP_EI_EXPIRED interrupts for both up/down in manual mode */ | |
174 | if (val > rps->min_freq_softlimit) | |
175 | mask |= (GEN6_PM_RP_UP_EI_EXPIRED | | |
176 | GEN6_PM_RP_DOWN_THRESHOLD | | |
177 | GEN6_PM_RP_DOWN_TIMEOUT); | |
178 | ||
179 | if (val < rps->max_freq_softlimit) | |
180 | mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_UP_THRESHOLD; | |
181 | ||
1ebf7aaf | 182 | mask &= rps->pm_events; |
3e7abf81 AS |
183 | |
184 | return rps_pm_sanitize_mask(rps, ~mask); | |
185 | } | |
186 | ||
187 | static void rps_reset_ei(struct intel_rps *rps) | |
188 | { | |
189 | memset(&rps->ei, 0, sizeof(rps->ei)); | |
190 | } | |
191 | ||
192 | static void rps_enable_interrupts(struct intel_rps *rps) | |
193 | { | |
194 | struct intel_gt *gt = rps_to_gt(rps); | |
195 | ||
7ba79a67 VB |
196 | GEM_BUG_ON(rps_uses_slpc(rps)); |
197 | ||
555a3224 CW |
198 | GT_TRACE(gt, "interrupts:on rps->pm_events: %x, rps_pm_mask:%x\n", |
199 | rps->pm_events, rps_pm_mask(rps, rps->last_freq)); | |
200 | ||
3e7abf81 AS |
201 | rps_reset_ei(rps); |
202 | ||
03d2c54d | 203 | spin_lock_irq(gt->irq_lock); |
3e7abf81 | 204 | gen6_gt_pm_enable_irq(gt, rps->pm_events); |
03d2c54d | 205 | spin_unlock_irq(gt->irq_lock); |
3e7abf81 | 206 | |
a080bd99 CW |
207 | intel_uncore_write(gt->uncore, |
208 | GEN6_PMINTRMSK, rps_pm_mask(rps, rps->last_freq)); | |
3e7abf81 AS |
209 | } |
210 | ||
211 | static void gen6_rps_reset_interrupts(struct intel_rps *rps) | |
212 | { | |
213 | gen6_gt_pm_reset_iir(rps_to_gt(rps), GEN6_PM_RPS_EVENTS); | |
214 | } | |
215 | ||
216 | static void gen11_rps_reset_interrupts(struct intel_rps *rps) | |
217 | { | |
218 | while (gen11_gt_reset_one_iir(rps_to_gt(rps), 0, GEN11_GTPM)) | |
219 | ; | |
220 | } | |
221 | ||
222 | static void rps_reset_interrupts(struct intel_rps *rps) | |
223 | { | |
224 | struct intel_gt *gt = rps_to_gt(rps); | |
225 | ||
03d2c54d | 226 | spin_lock_irq(gt->irq_lock); |
c816723b | 227 | if (GRAPHICS_VER(gt->i915) >= 11) |
3e7abf81 AS |
228 | gen11_rps_reset_interrupts(rps); |
229 | else | |
230 | gen6_rps_reset_interrupts(rps); | |
231 | ||
232 | rps->pm_iir = 0; | |
03d2c54d | 233 | spin_unlock_irq(gt->irq_lock); |
3e7abf81 AS |
234 | } |
235 | ||
236 | static void rps_disable_interrupts(struct intel_rps *rps) | |
237 | { | |
238 | struct intel_gt *gt = rps_to_gt(rps); | |
239 | ||
a080bd99 CW |
240 | intel_uncore_write(gt->uncore, |
241 | GEN6_PMINTRMSK, rps_pm_sanitize_mask(rps, ~0u)); | |
3e7abf81 | 242 | |
03d2c54d | 243 | spin_lock_irq(gt->irq_lock); |
3e7abf81 | 244 | gen6_gt_pm_disable_irq(gt, GEN6_PM_RPS_EVENTS); |
03d2c54d | 245 | spin_unlock_irq(gt->irq_lock); |
3e7abf81 AS |
246 | |
247 | intel_synchronize_irq(gt->i915); | |
248 | ||
249 | /* | |
250 | * Now that we will not be generating any more work, flush any | |
251 | * outstanding tasks. As we are called on the RPS idle path, | |
252 | * we will reset the GPU to minimum frequencies, so the current | |
253 | * state of the worker can be discarded. | |
254 | */ | |
255 | cancel_work_sync(&rps->work); | |
256 | ||
257 | rps_reset_interrupts(rps); | |
555a3224 | 258 | GT_TRACE(gt, "interrupts:off\n"); |
3e7abf81 AS |
259 | } |
260 | ||
261 | static const struct cparams { | |
262 | u16 i; | |
263 | u16 t; | |
264 | u16 m; | |
265 | u16 c; | |
266 | } cparams[] = { | |
267 | { 1, 1333, 301, 28664 }, | |
a4ad4020 | 268 | { 1, 1067, 294, 24460 }, |
3e7abf81 AS |
269 | { 1, 800, 294, 25192 }, |
270 | { 0, 1333, 276, 27605 }, | |
a4ad4020 | 271 | { 0, 1067, 276, 27605 }, |
3e7abf81 AS |
272 | { 0, 800, 231, 23784 }, |
273 | }; | |
274 | ||
275 | static void gen5_rps_init(struct intel_rps *rps) | |
276 | { | |
277 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
278 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
279 | u8 fmax, fmin, fstart; | |
280 | u32 rgvmodectl; | |
281 | int c_m, i; | |
282 | ||
a4ad4020 | 283 | if (i915->fsb_freq <= 3200000) |
3e7abf81 | 284 | c_m = 0; |
a4ad4020 | 285 | else if (i915->fsb_freq <= 4800000) |
3e7abf81 AS |
286 | c_m = 1; |
287 | else | |
288 | c_m = 2; | |
289 | ||
290 | for (i = 0; i < ARRAY_SIZE(cparams); i++) { | |
a4ad4020 JN |
291 | if (cparams[i].i == c_m && |
292 | cparams[i].t == DIV_ROUND_CLOSEST(i915->mem_freq, 1000)) { | |
3e7abf81 AS |
293 | rps->ips.m = cparams[i].m; |
294 | rps->ips.c = cparams[i].c; | |
295 | break; | |
296 | } | |
297 | } | |
298 | ||
299 | rgvmodectl = intel_uncore_read(uncore, MEMMODECTL); | |
300 | ||
301 | /* Set up min, max, and cur for interrupt handling */ | |
302 | fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT; | |
303 | fmin = (rgvmodectl & MEMMODE_FMIN_MASK); | |
304 | fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >> | |
305 | MEMMODE_FSTART_SHIFT; | |
a8fa7c07 WK |
306 | drm_dbg(&i915->drm, "fmax: %d, fmin: %d, fstart: %d\n", |
307 | fmax, fmin, fstart); | |
3e7abf81 | 308 | |
dd095afc | 309 | rps->min_freq = fmax; |
043cd2d1 | 310 | rps->efficient_freq = fstart; |
dd095afc | 311 | rps->max_freq = fmin; |
3e7abf81 AS |
312 | } |
313 | ||
314 | static unsigned long | |
315 | __ips_chipset_val(struct intel_ips *ips) | |
316 | { | |
317 | struct intel_uncore *uncore = | |
318 | rps_to_uncore(container_of(ips, struct intel_rps, ips)); | |
319 | unsigned long now = jiffies_to_msecs(jiffies), dt; | |
320 | unsigned long result; | |
321 | u64 total, delta; | |
322 | ||
323 | lockdep_assert_held(&mchdev_lock); | |
324 | ||
325 | /* | |
326 | * Prevent division-by-zero if we are asking too fast. | |
327 | * Also, we don't get interesting results if we are polling | |
328 | * faster than once in 10ms, so just return the saved value | |
329 | * in such cases. | |
330 | */ | |
331 | dt = now - ips->last_time1; | |
332 | if (dt <= 10) | |
333 | return ips->chipset_power; | |
334 | ||
335 | /* FIXME: handle per-counter overflow */ | |
336 | total = intel_uncore_read(uncore, DMIEC); | |
337 | total += intel_uncore_read(uncore, DDREC); | |
338 | total += intel_uncore_read(uncore, CSIEC); | |
339 | ||
340 | delta = total - ips->last_count1; | |
341 | ||
342 | result = div_u64(div_u64(ips->m * delta, dt) + ips->c, 10); | |
343 | ||
344 | ips->last_count1 = total; | |
345 | ips->last_time1 = now; | |
346 | ||
347 | ips->chipset_power = result; | |
348 | ||
349 | return result; | |
350 | } | |
351 | ||
352 | static unsigned long ips_mch_val(struct intel_uncore *uncore) | |
353 | { | |
354 | unsigned int m, x, b; | |
355 | u32 tsfs; | |
356 | ||
357 | tsfs = intel_uncore_read(uncore, TSFS); | |
358 | x = intel_uncore_read8(uncore, TR1); | |
359 | ||
360 | b = tsfs & TSFS_INTR_MASK; | |
361 | m = (tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT; | |
362 | ||
363 | return m * x / 127 - b; | |
364 | } | |
365 | ||
366 | static int _pxvid_to_vd(u8 pxvid) | |
367 | { | |
368 | if (pxvid == 0) | |
369 | return 0; | |
370 | ||
371 | if (pxvid >= 8 && pxvid < 31) | |
372 | pxvid = 31; | |
373 | ||
374 | return (pxvid + 2) * 125; | |
375 | } | |
376 | ||
377 | static u32 pvid_to_extvid(struct drm_i915_private *i915, u8 pxvid) | |
378 | { | |
379 | const int vd = _pxvid_to_vd(pxvid); | |
380 | ||
381 | if (INTEL_INFO(i915)->is_mobile) | |
382 | return max(vd - 1125, 0); | |
383 | ||
384 | return vd; | |
385 | } | |
386 | ||
387 | static void __gen5_ips_update(struct intel_ips *ips) | |
388 | { | |
389 | struct intel_uncore *uncore = | |
390 | rps_to_uncore(container_of(ips, struct intel_rps, ips)); | |
391 | u64 now, delta, dt; | |
392 | u32 count; | |
393 | ||
394 | lockdep_assert_held(&mchdev_lock); | |
395 | ||
396 | now = ktime_get_raw_ns(); | |
397 | dt = now - ips->last_time2; | |
398 | do_div(dt, NSEC_PER_MSEC); | |
399 | ||
400 | /* Don't divide by 0 */ | |
401 | if (dt <= 10) | |
402 | return; | |
403 | ||
404 | count = intel_uncore_read(uncore, GFXEC); | |
405 | delta = count - ips->last_count2; | |
406 | ||
407 | ips->last_count2 = count; | |
408 | ips->last_time2 = now; | |
409 | ||
410 | /* More magic constants... */ | |
411 | ips->gfx_power = div_u64(delta * 1181, dt * 10); | |
412 | } | |
413 | ||
414 | static void gen5_rps_update(struct intel_rps *rps) | |
415 | { | |
416 | spin_lock_irq(&mchdev_lock); | |
417 | __gen5_ips_update(&rps->ips); | |
418 | spin_unlock_irq(&mchdev_lock); | |
419 | } | |
420 | ||
e82351e7 VS |
421 | static unsigned int gen5_invert_freq(struct intel_rps *rps, |
422 | unsigned int val) | |
423 | { | |
424 | /* Invert the frequency bin into an ips delay */ | |
425 | val = rps->max_freq - val; | |
426 | val = rps->min_freq + val; | |
427 | ||
428 | return val; | |
429 | } | |
430 | ||
4ee73792 | 431 | static int __gen5_rps_set(struct intel_rps *rps, u8 val) |
3e7abf81 AS |
432 | { |
433 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
434 | u16 rgvswctl; | |
435 | ||
436 | lockdep_assert_held(&mchdev_lock); | |
437 | ||
438 | rgvswctl = intel_uncore_read16(uncore, MEMSWCTL); | |
439 | if (rgvswctl & MEMCTL_CMD_STS) { | |
a10234fd TU |
440 | drm_dbg(&rps_to_i915(rps)->drm, |
441 | "gpu busy, RCS change rejected\n"); | |
4ee73792 | 442 | return -EBUSY; /* still busy with another command */ |
3e7abf81 AS |
443 | } |
444 | ||
dd095afc | 445 | /* Invert the frequency bin into an ips delay */ |
e82351e7 | 446 | val = gen5_invert_freq(rps, val); |
3e7abf81 AS |
447 | |
448 | rgvswctl = | |
449 | (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | | |
450 | (val << MEMCTL_FREQ_SHIFT) | | |
451 | MEMCTL_SFCAVM; | |
452 | intel_uncore_write16(uncore, MEMSWCTL, rgvswctl); | |
453 | intel_uncore_posting_read16(uncore, MEMSWCTL); | |
454 | ||
455 | rgvswctl |= MEMCTL_CMD_STS; | |
456 | intel_uncore_write16(uncore, MEMSWCTL, rgvswctl); | |
457 | ||
4ee73792 CW |
458 | return 0; |
459 | } | |
460 | ||
461 | static int gen5_rps_set(struct intel_rps *rps, u8 val) | |
462 | { | |
463 | int err; | |
464 | ||
465 | spin_lock_irq(&mchdev_lock); | |
466 | err = __gen5_rps_set(rps, val); | |
467 | spin_unlock_irq(&mchdev_lock); | |
468 | ||
469 | return err; | |
3e7abf81 AS |
470 | } |
471 | ||
472 | static unsigned long intel_pxfreq(u32 vidfreq) | |
473 | { | |
474 | int div = (vidfreq & 0x3f0000) >> 16; | |
475 | int post = (vidfreq & 0x3000) >> 12; | |
476 | int pre = (vidfreq & 0x7); | |
477 | ||
478 | if (!pre) | |
479 | return 0; | |
480 | ||
481 | return div * 133333 / (pre << post); | |
482 | } | |
483 | ||
484 | static unsigned int init_emon(struct intel_uncore *uncore) | |
485 | { | |
486 | u8 pxw[16]; | |
487 | int i; | |
488 | ||
489 | /* Disable to program */ | |
490 | intel_uncore_write(uncore, ECR, 0); | |
491 | intel_uncore_posting_read(uncore, ECR); | |
492 | ||
493 | /* Program energy weights for various events */ | |
494 | intel_uncore_write(uncore, SDEW, 0x15040d00); | |
495 | intel_uncore_write(uncore, CSIEW0, 0x007f0000); | |
496 | intel_uncore_write(uncore, CSIEW1, 0x1e220004); | |
497 | intel_uncore_write(uncore, CSIEW2, 0x04000004); | |
498 | ||
499 | for (i = 0; i < 5; i++) | |
500 | intel_uncore_write(uncore, PEW(i), 0); | |
501 | for (i = 0; i < 3; i++) | |
502 | intel_uncore_write(uncore, DEW(i), 0); | |
503 | ||
504 | /* Program P-state weights to account for frequency power adjustment */ | |
505 | for (i = 0; i < 16; i++) { | |
506 | u32 pxvidfreq = intel_uncore_read(uncore, PXVFREQ(i)); | |
507 | unsigned int freq = intel_pxfreq(pxvidfreq); | |
508 | unsigned int vid = | |
509 | (pxvidfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT; | |
510 | unsigned int val; | |
511 | ||
512 | val = vid * vid * freq / 1000 * 255; | |
513 | val /= 127 * 127 * 900; | |
514 | ||
515 | pxw[i] = val; | |
516 | } | |
517 | /* Render standby states get 0 weight */ | |
518 | pxw[14] = 0; | |
519 | pxw[15] = 0; | |
520 | ||
521 | for (i = 0; i < 4; i++) { | |
522 | intel_uncore_write(uncore, PXW(i), | |
523 | pxw[i * 4 + 0] << 24 | | |
524 | pxw[i * 4 + 1] << 16 | | |
525 | pxw[i * 4 + 2] << 8 | | |
526 | pxw[i * 4 + 3] << 0); | |
527 | } | |
528 | ||
529 | /* Adjust magic regs to magic values (more experimental results) */ | |
530 | intel_uncore_write(uncore, OGW0, 0); | |
531 | intel_uncore_write(uncore, OGW1, 0); | |
532 | intel_uncore_write(uncore, EG0, 0x00007f00); | |
533 | intel_uncore_write(uncore, EG1, 0x0000000e); | |
534 | intel_uncore_write(uncore, EG2, 0x000e0000); | |
535 | intel_uncore_write(uncore, EG3, 0x68000300); | |
536 | intel_uncore_write(uncore, EG4, 0x42000000); | |
537 | intel_uncore_write(uncore, EG5, 0x00140031); | |
538 | intel_uncore_write(uncore, EG6, 0); | |
539 | intel_uncore_write(uncore, EG7, 0); | |
540 | ||
541 | for (i = 0; i < 8; i++) | |
542 | intel_uncore_write(uncore, PXWL(i), 0); | |
543 | ||
544 | /* Enable PMON + select events */ | |
545 | intel_uncore_write(uncore, ECR, 0x80000019); | |
546 | ||
547 | return intel_uncore_read(uncore, LCFUSE02) & LCFUSE_HIV_MASK; | |
548 | } | |
549 | ||
550 | static bool gen5_rps_enable(struct intel_rps *rps) | |
551 | { | |
c6073d4c | 552 | struct drm_i915_private *i915 = rps_to_i915(rps); |
3e7abf81 AS |
553 | struct intel_uncore *uncore = rps_to_uncore(rps); |
554 | u8 fstart, vstart; | |
555 | u32 rgvmodectl; | |
556 | ||
557 | spin_lock_irq(&mchdev_lock); | |
558 | ||
559 | rgvmodectl = intel_uncore_read(uncore, MEMMODECTL); | |
560 | ||
561 | /* Enable temp reporting */ | |
562 | intel_uncore_write16(uncore, PMMISC, | |
563 | intel_uncore_read16(uncore, PMMISC) | MCPPCE_EN); | |
564 | intel_uncore_write16(uncore, TSC1, | |
565 | intel_uncore_read16(uncore, TSC1) | TSE); | |
566 | ||
567 | /* 100ms RC evaluation intervals */ | |
568 | intel_uncore_write(uncore, RCUPEI, 100000); | |
569 | intel_uncore_write(uncore, RCDNEI, 100000); | |
570 | ||
571 | /* Set max/min thresholds to 90ms and 80ms respectively */ | |
572 | intel_uncore_write(uncore, RCBMAXAVG, 90000); | |
573 | intel_uncore_write(uncore, RCBMINAVG, 80000); | |
574 | ||
575 | intel_uncore_write(uncore, MEMIHYST, 1); | |
576 | ||
577 | /* Set up min, max, and cur for interrupt handling */ | |
578 | fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >> | |
579 | MEMMODE_FSTART_SHIFT; | |
580 | ||
581 | vstart = (intel_uncore_read(uncore, PXVFREQ(fstart)) & | |
582 | PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT; | |
583 | ||
584 | intel_uncore_write(uncore, | |
585 | MEMINTREN, | |
586 | MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN); | |
587 | ||
588 | intel_uncore_write(uncore, VIDSTART, vstart); | |
589 | intel_uncore_posting_read(uncore, VIDSTART); | |
590 | ||
591 | rgvmodectl |= MEMMODE_SWMODE_EN; | |
592 | intel_uncore_write(uncore, MEMMODECTL, rgvmodectl); | |
593 | ||
594 | if (wait_for_atomic((intel_uncore_read(uncore, MEMSWCTL) & | |
595 | MEMCTL_CMD_STS) == 0, 10)) | |
a8fa7c07 WK |
596 | drm_err(&uncore->i915->drm, |
597 | "stuck trying to change perf mode\n"); | |
3e7abf81 AS |
598 | mdelay(1); |
599 | ||
4ee73792 | 600 | __gen5_rps_set(rps, rps->cur_freq); |
3e7abf81 AS |
601 | |
602 | rps->ips.last_count1 = intel_uncore_read(uncore, DMIEC); | |
603 | rps->ips.last_count1 += intel_uncore_read(uncore, DDREC); | |
604 | rps->ips.last_count1 += intel_uncore_read(uncore, CSIEC); | |
605 | rps->ips.last_time1 = jiffies_to_msecs(jiffies); | |
606 | ||
607 | rps->ips.last_count2 = intel_uncore_read(uncore, GFXEC); | |
608 | rps->ips.last_time2 = ktime_get_raw_ns(); | |
609 | ||
c6073d4c VS |
610 | spin_lock(&i915->irq_lock); |
611 | ilk_enable_display_irq(i915, DE_PCU_EVENT); | |
612 | spin_unlock(&i915->irq_lock); | |
613 | ||
3e7abf81 AS |
614 | spin_unlock_irq(&mchdev_lock); |
615 | ||
616 | rps->ips.corr = init_emon(uncore); | |
617 | ||
618 | return true; | |
619 | } | |
620 | ||
621 | static void gen5_rps_disable(struct intel_rps *rps) | |
622 | { | |
c6073d4c | 623 | struct drm_i915_private *i915 = rps_to_i915(rps); |
3e7abf81 AS |
624 | struct intel_uncore *uncore = rps_to_uncore(rps); |
625 | u16 rgvswctl; | |
626 | ||
627 | spin_lock_irq(&mchdev_lock); | |
628 | ||
c6073d4c VS |
629 | spin_lock(&i915->irq_lock); |
630 | ilk_disable_display_irq(i915, DE_PCU_EVENT); | |
631 | spin_unlock(&i915->irq_lock); | |
632 | ||
3e7abf81 AS |
633 | rgvswctl = intel_uncore_read16(uncore, MEMSWCTL); |
634 | ||
635 | /* Ack interrupts, disable EFC interrupt */ | |
c61aa740 | 636 | intel_uncore_rmw(uncore, MEMINTREN, MEMINT_EVAL_CHG_EN, 0); |
3e7abf81 | 637 | intel_uncore_write(uncore, MEMINTRSTS, MEMINT_EVAL_CHG); |
3e7abf81 AS |
638 | |
639 | /* Go back to the starting frequency */ | |
4ee73792 | 640 | __gen5_rps_set(rps, rps->idle_freq); |
3e7abf81 AS |
641 | mdelay(1); |
642 | rgvswctl |= MEMCTL_CMD_STS; | |
643 | intel_uncore_write(uncore, MEMSWCTL, rgvswctl); | |
644 | mdelay(1); | |
645 | ||
646 | spin_unlock_irq(&mchdev_lock); | |
647 | } | |
648 | ||
649 | static u32 rps_limits(struct intel_rps *rps, u8 val) | |
650 | { | |
651 | u32 limits; | |
652 | ||
653 | /* | |
654 | * Only set the down limit when we've reached the lowest level to avoid | |
655 | * getting more interrupts, otherwise leave this clear. This prevents a | |
656 | * race in the hw when coming out of rc6: There's a tiny window where | |
657 | * the hw runs at the minimal clock before selecting the desired | |
658 | * frequency, if the down threshold expires in that window we will not | |
659 | * receive a down interrupt. | |
660 | */ | |
c816723b | 661 | if (GRAPHICS_VER(rps_to_i915(rps)) >= 9) { |
3e7abf81 AS |
662 | limits = rps->max_freq_softlimit << 23; |
663 | if (val <= rps->min_freq_softlimit) | |
664 | limits |= rps->min_freq_softlimit << 14; | |
665 | } else { | |
666 | limits = rps->max_freq_softlimit << 24; | |
667 | if (val <= rps->min_freq_softlimit) | |
668 | limits |= rps->min_freq_softlimit << 16; | |
669 | } | |
670 | ||
671 | return limits; | |
672 | } | |
673 | ||
674 | static void rps_set_power(struct intel_rps *rps, int new_power) | |
675 | { | |
9c878557 CW |
676 | struct intel_gt *gt = rps_to_gt(rps); |
677 | struct intel_uncore *uncore = gt->uncore; | |
3e7abf81 AS |
678 | u32 ei_up = 0, ei_down = 0; |
679 | ||
680 | lockdep_assert_held(&rps->power.mutex); | |
681 | ||
682 | if (new_power == rps->power.mode) | |
683 | return; | |
684 | ||
685 | /* Note the units here are not exactly 1us, but 1280ns. */ | |
686 | switch (new_power) { | |
687 | case LOW_POWER: | |
3e7abf81 | 688 | ei_up = 16000; |
3e7abf81 | 689 | ei_down = 32000; |
3e7abf81 AS |
690 | break; |
691 | ||
692 | case BETWEEN: | |
3e7abf81 | 693 | ei_up = 13000; |
3e7abf81 | 694 | ei_down = 32000; |
3e7abf81 AS |
695 | break; |
696 | ||
697 | case HIGH_POWER: | |
3e7abf81 | 698 | ei_up = 10000; |
3e7abf81 | 699 | ei_down = 32000; |
3e7abf81 AS |
700 | break; |
701 | } | |
702 | ||
703 | /* When byt can survive without system hang with dynamic | |
704 | * sw freq adjustments, this restriction can be lifted. | |
705 | */ | |
9c878557 | 706 | if (IS_VALLEYVIEW(gt->i915)) |
3e7abf81 AS |
707 | goto skip_hw_write; |
708 | ||
9c878557 | 709 | GT_TRACE(gt, |
555a3224 | 710 | "changing power mode [%d], up %d%% @ %dus, down %d%% @ %dus\n", |
c2307b7f TU |
711 | new_power, |
712 | rps->power.up_threshold, ei_up, | |
713 | rps->power.down_threshold, ei_down); | |
555a3224 | 714 | |
9c878557 CW |
715 | set(uncore, GEN6_RP_UP_EI, |
716 | intel_gt_ns_to_pm_interval(gt, ei_up * 1000)); | |
35cc7f32 | 717 | set(uncore, GEN6_RP_UP_THRESHOLD, |
c2307b7f TU |
718 | intel_gt_ns_to_pm_interval(gt, |
719 | ei_up * rps->power.up_threshold * 10)); | |
35cc7f32 | 720 | |
9c878557 CW |
721 | set(uncore, GEN6_RP_DOWN_EI, |
722 | intel_gt_ns_to_pm_interval(gt, ei_down * 1000)); | |
35cc7f32 | 723 | set(uncore, GEN6_RP_DOWN_THRESHOLD, |
c2307b7f TU |
724 | intel_gt_ns_to_pm_interval(gt, |
725 | ei_down * | |
726 | rps->power.down_threshold * 10)); | |
35cc7f32 CW |
727 | |
728 | set(uncore, GEN6_RP_CONTROL, | |
c816723b | 729 | (GRAPHICS_VER(gt->i915) > 9 ? 0 : GEN6_RP_MEDIA_TURBO) | |
35cc7f32 CW |
730 | GEN6_RP_MEDIA_HW_NORMAL_MODE | |
731 | GEN6_RP_MEDIA_IS_GFX | | |
732 | GEN6_RP_ENABLE | | |
733 | GEN6_RP_UP_BUSY_AVG | | |
734 | GEN6_RP_DOWN_IDLE_AVG); | |
3e7abf81 AS |
735 | |
736 | skip_hw_write: | |
737 | rps->power.mode = new_power; | |
3e7abf81 AS |
738 | } |
739 | ||
740 | static void gen6_rps_set_thresholds(struct intel_rps *rps, u8 val) | |
741 | { | |
742 | int new_power; | |
743 | ||
744 | new_power = rps->power.mode; | |
745 | switch (rps->power.mode) { | |
746 | case LOW_POWER: | |
747 | if (val > rps->efficient_freq + 1 && | |
748 | val > rps->cur_freq) | |
749 | new_power = BETWEEN; | |
750 | break; | |
751 | ||
752 | case BETWEEN: | |
753 | if (val <= rps->efficient_freq && | |
754 | val < rps->cur_freq) | |
755 | new_power = LOW_POWER; | |
756 | else if (val >= rps->rp0_freq && | |
757 | val > rps->cur_freq) | |
758 | new_power = HIGH_POWER; | |
759 | break; | |
760 | ||
761 | case HIGH_POWER: | |
762 | if (val < (rps->rp1_freq + rps->rp0_freq) >> 1 && | |
763 | val < rps->cur_freq) | |
764 | new_power = BETWEEN; | |
765 | break; | |
766 | } | |
767 | /* Max/min bins are special */ | |
768 | if (val <= rps->min_freq_softlimit) | |
769 | new_power = LOW_POWER; | |
770 | if (val >= rps->max_freq_softlimit) | |
771 | new_power = HIGH_POWER; | |
772 | ||
773 | mutex_lock(&rps->power.mutex); | |
774 | if (rps->power.interactive) | |
775 | new_power = HIGH_POWER; | |
776 | rps_set_power(rps, new_power); | |
777 | mutex_unlock(&rps->power.mutex); | |
778 | } | |
779 | ||
780 | void intel_rps_mark_interactive(struct intel_rps *rps, bool interactive) | |
781 | { | |
01fabda8 LDM |
782 | GT_TRACE(rps_to_gt(rps), "mark interactive: %s\n", |
783 | str_yes_no(interactive)); | |
555a3224 | 784 | |
3e7abf81 AS |
785 | mutex_lock(&rps->power.mutex); |
786 | if (interactive) { | |
9bad2adb | 787 | if (!rps->power.interactive++ && intel_rps_is_active(rps)) |
3e7abf81 AS |
788 | rps_set_power(rps, HIGH_POWER); |
789 | } else { | |
790 | GEM_BUG_ON(!rps->power.interactive); | |
791 | rps->power.interactive--; | |
792 | } | |
793 | mutex_unlock(&rps->power.mutex); | |
794 | } | |
795 | ||
796 | static int gen6_rps_set(struct intel_rps *rps, u8 val) | |
797 | { | |
798 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
799 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
800 | u32 swreq; | |
801 | ||
7ba79a67 VB |
802 | GEM_BUG_ON(rps_uses_slpc(rps)); |
803 | ||
c816723b | 804 | if (GRAPHICS_VER(i915) >= 9) |
3e7abf81 AS |
805 | swreq = GEN9_FREQUENCY(val); |
806 | else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) | |
807 | swreq = HSW_FREQUENCY(val); | |
808 | else | |
809 | swreq = (GEN6_FREQUENCY(val) | | |
810 | GEN6_OFFSET(0) | | |
811 | GEN6_AGGRESSIVE_TURBO); | |
35cc7f32 | 812 | set(uncore, GEN6_RPNSWREQ, swreq); |
3e7abf81 | 813 | |
555a3224 CW |
814 | GT_TRACE(rps_to_gt(rps), "set val:%x, freq:%d, swreq:%x\n", |
815 | val, intel_gpu_freq(rps, val), swreq); | |
816 | ||
3e7abf81 AS |
817 | return 0; |
818 | } | |
819 | ||
820 | static int vlv_rps_set(struct intel_rps *rps, u8 val) | |
821 | { | |
822 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
823 | int err; | |
824 | ||
825 | vlv_punit_get(i915); | |
826 | err = vlv_punit_write(i915, PUNIT_REG_GPU_FREQ_REQ, val); | |
827 | vlv_punit_put(i915); | |
828 | ||
555a3224 CW |
829 | GT_TRACE(rps_to_gt(rps), "set val:%x, freq:%d\n", |
830 | val, intel_gpu_freq(rps, val)); | |
831 | ||
3e7abf81 AS |
832 | return err; |
833 | } | |
834 | ||
28117632 | 835 | static int rps_set(struct intel_rps *rps, u8 val, bool update) |
3e7abf81 AS |
836 | { |
837 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
838 | int err; | |
839 | ||
3e7abf81 AS |
840 | if (val == rps->last_freq) |
841 | return 0; | |
842 | ||
843 | if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) | |
844 | err = vlv_rps_set(rps, val); | |
c816723b | 845 | else if (GRAPHICS_VER(i915) >= 6) |
3e7abf81 | 846 | err = gen6_rps_set(rps, val); |
4ee73792 CW |
847 | else |
848 | err = gen5_rps_set(rps, val); | |
3e7abf81 AS |
849 | if (err) |
850 | return err; | |
851 | ||
c816723b | 852 | if (update && GRAPHICS_VER(i915) >= 6) |
28117632 | 853 | gen6_rps_set_thresholds(rps, val); |
3e7abf81 AS |
854 | rps->last_freq = val; |
855 | ||
856 | return 0; | |
857 | } | |
858 | ||
859 | void intel_rps_unpark(struct intel_rps *rps) | |
860 | { | |
9bad2adb | 861 | if (!intel_rps_is_enabled(rps)) |
3e7abf81 AS |
862 | return; |
863 | ||
555a3224 CW |
864 | GT_TRACE(rps_to_gt(rps), "unpark:%x\n", rps->cur_freq); |
865 | ||
3e7abf81 AS |
866 | /* |
867 | * Use the user's desired frequency as a guide, but for better | |
868 | * performance, jump directly to RPe as our starting frequency. | |
869 | */ | |
870 | mutex_lock(&rps->lock); | |
74e5a9ac | 871 | |
9bad2adb | 872 | intel_rps_set_active(rps); |
043cd2d1 CW |
873 | intel_rps_set(rps, |
874 | clamp(rps->cur_freq, | |
875 | rps->min_freq_softlimit, | |
876 | rps->max_freq_softlimit)); | |
ff345271 | 877 | |
3e7abf81 AS |
878 | mutex_unlock(&rps->lock); |
879 | ||
36d516be | 880 | rps->pm_iir = 0; |
8e99299a | 881 | if (intel_rps_has_interrupts(rps)) |
3e7abf81 | 882 | rps_enable_interrupts(rps); |
36d516be CW |
883 | if (intel_rps_uses_timer(rps)) |
884 | rps_start_timer(rps); | |
3e7abf81 | 885 | |
c816723b | 886 | if (GRAPHICS_VER(rps_to_i915(rps)) == 5) |
3e7abf81 AS |
887 | gen5_rps_update(rps); |
888 | } | |
889 | ||
890 | void intel_rps_park(struct intel_rps *rps) | |
891 | { | |
3f88dde6 CW |
892 | int adj; |
893 | ||
7ba79a67 VB |
894 | if (!intel_rps_is_enabled(rps)) |
895 | return; | |
896 | ||
9bad2adb | 897 | if (!intel_rps_clear_active(rps)) |
3e7abf81 AS |
898 | return; |
899 | ||
36d516be CW |
900 | if (intel_rps_uses_timer(rps)) |
901 | rps_stop_timer(rps); | |
8e99299a | 902 | if (intel_rps_has_interrupts(rps)) |
3e7abf81 AS |
903 | rps_disable_interrupts(rps); |
904 | ||
3e7abf81 AS |
905 | if (rps->last_freq <= rps->idle_freq) |
906 | return; | |
907 | ||
908 | /* | |
909 | * The punit delays the write of the frequency and voltage until it | |
910 | * determines the GPU is awake. During normal usage we don't want to | |
911 | * waste power changing the frequency if the GPU is sleeping (rc6). | |
912 | * However, the GPU and driver is now idle and we do not want to delay | |
913 | * switching to minimum voltage (reducing power whilst idle) as we do | |
914 | * not expect to be woken in the near future and so must flush the | |
915 | * change by waking the device. | |
916 | * | |
917 | * We choose to take the media powerwell (either would do to trick the | |
918 | * punit into committing the voltage change) as that takes a lot less | |
919 | * power than the render powerwell. | |
920 | */ | |
921 | intel_uncore_forcewake_get(rps_to_uncore(rps), FORCEWAKE_MEDIA); | |
28117632 | 922 | rps_set(rps, rps->idle_freq, false); |
3e7abf81 | 923 | intel_uncore_forcewake_put(rps_to_uncore(rps), FORCEWAKE_MEDIA); |
21abf0bf CW |
924 | |
925 | /* | |
926 | * Since we will try and restart from the previously requested | |
927 | * frequency on unparking, treat this idle point as a downclock | |
928 | * interrupt and reduce the frequency for resume. If we park/unpark | |
929 | * more frequently than the rps worker can run, we will not respond | |
930 | * to any EI and never see a change in frequency. | |
931 | * | |
932 | * (Note we accommodate Cherryview's limitation of only using an | |
933 | * even bin by applying it to all.) | |
934 | */ | |
3f88dde6 CW |
935 | adj = rps->last_adj; |
936 | if (adj < 0) | |
937 | adj *= 2; | |
938 | else /* CHV needs even encode values */ | |
939 | adj = -2; | |
940 | rps->last_adj = adj; | |
941 | rps->cur_freq = max_t(int, rps->cur_freq + adj, rps->min_freq); | |
f7ed83cc CW |
942 | if (rps->cur_freq < rps->efficient_freq) { |
943 | rps->cur_freq = rps->efficient_freq; | |
944 | rps->last_adj = 0; | |
945 | } | |
555a3224 CW |
946 | |
947 | GT_TRACE(rps_to_gt(rps), "park:%x\n", rps->cur_freq); | |
3e7abf81 AS |
948 | } |
949 | ||
1448d5c4 VB |
950 | u32 intel_rps_get_boost_frequency(struct intel_rps *rps) |
951 | { | |
952 | struct intel_guc_slpc *slpc; | |
953 | ||
954 | if (rps_uses_slpc(rps)) { | |
955 | slpc = rps_to_slpc(rps); | |
956 | ||
957 | return slpc->boost_freq; | |
958 | } else { | |
959 | return intel_gpu_freq(rps, rps->boost_freq); | |
960 | } | |
961 | } | |
962 | ||
963 | static int rps_set_boost_freq(struct intel_rps *rps, u32 val) | |
964 | { | |
965 | bool boost = false; | |
966 | ||
967 | /* Validate against (static) hardware limits */ | |
968 | val = intel_freq_opcode(rps, val); | |
969 | if (val < rps->min_freq || val > rps->max_freq) | |
970 | return -EINVAL; | |
971 | ||
972 | mutex_lock(&rps->lock); | |
973 | if (val != rps->boost_freq) { | |
974 | rps->boost_freq = val; | |
975 | boost = atomic_read(&rps->num_waiters); | |
976 | } | |
977 | mutex_unlock(&rps->lock); | |
978 | if (boost) | |
848a4e5c | 979 | queue_work(rps_to_gt(rps)->i915->unordered_wq, &rps->work); |
1448d5c4 VB |
980 | |
981 | return 0; | |
982 | } | |
983 | ||
984 | int intel_rps_set_boost_frequency(struct intel_rps *rps, u32 freq) | |
985 | { | |
986 | struct intel_guc_slpc *slpc; | |
987 | ||
988 | if (rps_uses_slpc(rps)) { | |
989 | slpc = rps_to_slpc(rps); | |
990 | ||
991 | return intel_guc_slpc_set_boost_freq(slpc, freq); | |
992 | } else { | |
993 | return rps_set_boost_freq(rps, freq); | |
994 | } | |
995 | } | |
996 | ||
493043fe VB |
997 | void intel_rps_dec_waiters(struct intel_rps *rps) |
998 | { | |
999 | struct intel_guc_slpc *slpc; | |
1000 | ||
1001 | if (rps_uses_slpc(rps)) { | |
1002 | slpc = rps_to_slpc(rps); | |
1003 | ||
1004 | intel_guc_slpc_dec_waiters(slpc); | |
1005 | } else { | |
1006 | atomic_dec(&rps->num_waiters); | |
1007 | } | |
1008 | } | |
1009 | ||
3e7abf81 AS |
1010 | void intel_rps_boost(struct i915_request *rq) |
1011 | { | |
493043fe VB |
1012 | struct intel_guc_slpc *slpc; |
1013 | ||
4e5c8a99 | 1014 | if (i915_request_signaled(rq) || i915_request_has_waitboost(rq)) |
3e7abf81 AS |
1015 | return; |
1016 | ||
cec82816 VB |
1017 | /* Waitboost is not needed for contexts marked with a Freq hint */ |
1018 | if (test_bit(CONTEXT_LOW_LATENCY, &rq->context->flags)) | |
1019 | return; | |
1020 | ||
3e7abf81 | 1021 | /* Serializes with i915_request_retire() */ |
4e5c8a99 CW |
1022 | if (!test_and_set_bit(I915_FENCE_FLAG_BOOST, &rq->fence.flags)) { |
1023 | struct intel_rps *rps = &READ_ONCE(rq->engine)->gt->rps; | |
1024 | ||
493043fe VB |
1025 | if (rps_uses_slpc(rps)) { |
1026 | slpc = rps_to_slpc(rps); | |
1027 | ||
f864a29a VB |
1028 | if (slpc->min_freq_softlimit >= slpc->boost_freq) |
1029 | return; | |
1030 | ||
493043fe | 1031 | /* Return if old value is non zero */ |
f864a29a VB |
1032 | if (!atomic_fetch_inc(&slpc->num_waiters)) { |
1033 | GT_TRACE(rps_to_gt(rps), "boost fence:%llx:%llx\n", | |
1034 | rq->fence.context, rq->fence.seqno); | |
848a4e5c LC |
1035 | queue_work(rps_to_gt(rps)->i915->unordered_wq, |
1036 | &slpc->boost_work); | |
f864a29a | 1037 | } |
493043fe VB |
1038 | |
1039 | return; | |
1040 | } | |
1041 | ||
4e5c8a99 CW |
1042 | if (atomic_fetch_inc(&rps->num_waiters)) |
1043 | return; | |
1044 | ||
1045 | if (!intel_rps_is_active(rps)) | |
1046 | return; | |
3e7abf81 | 1047 | |
555a3224 CW |
1048 | GT_TRACE(rps_to_gt(rps), "boost fence:%llx:%llx\n", |
1049 | rq->fence.context, rq->fence.seqno); | |
1050 | ||
4e5c8a99 | 1051 | if (READ_ONCE(rps->cur_freq) < rps->boost_freq) |
848a4e5c | 1052 | queue_work(rps_to_gt(rps)->i915->unordered_wq, &rps->work); |
3e7abf81 | 1053 | |
4e5c8a99 | 1054 | WRITE_ONCE(rps->boosts, rps->boosts + 1); /* debug only */ |
3e7abf81 | 1055 | } |
3e7abf81 AS |
1056 | } |
1057 | ||
1058 | int intel_rps_set(struct intel_rps *rps, u8 val) | |
1059 | { | |
35cc7f32 | 1060 | int err; |
3e7abf81 AS |
1061 | |
1062 | lockdep_assert_held(&rps->lock); | |
1063 | GEM_BUG_ON(val > rps->max_freq); | |
1064 | GEM_BUG_ON(val < rps->min_freq); | |
1065 | ||
9bad2adb | 1066 | if (intel_rps_is_active(rps)) { |
28117632 | 1067 | err = rps_set(rps, val, true); |
35cc7f32 CW |
1068 | if (err) |
1069 | return err; | |
3e7abf81 AS |
1070 | |
1071 | /* | |
1072 | * Make sure we continue to get interrupts | |
1073 | * until we hit the minimum or maximum frequencies. | |
1074 | */ | |
8e99299a | 1075 | if (intel_rps_has_interrupts(rps)) { |
3e7abf81 AS |
1076 | struct intel_uncore *uncore = rps_to_uncore(rps); |
1077 | ||
35cc7f32 CW |
1078 | set(uncore, |
1079 | GEN6_RP_INTERRUPT_LIMITS, rps_limits(rps, val)); | |
3e7abf81 | 1080 | |
35cc7f32 | 1081 | set(uncore, GEN6_PMINTRMSK, rps_pm_mask(rps, val)); |
3e7abf81 AS |
1082 | } |
1083 | } | |
1084 | ||
35cc7f32 CW |
1085 | rps->cur_freq = val; |
1086 | return 0; | |
3e7abf81 AS |
1087 | } |
1088 | ||
56758cc4 AD |
1089 | static u32 intel_rps_read_state_cap(struct intel_rps *rps) |
1090 | { | |
1091 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1092 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
1093 | ||
326e30e4 | 1094 | if (IS_GEN9_LP(i915)) |
56758cc4 AD |
1095 | return intel_uncore_read(uncore, BXT_RP_STATE_CAP); |
1096 | else | |
1097 | return intel_uncore_read(uncore, GEN6_RP_STATE_CAP); | |
1098 | } | |
1099 | ||
835a4d18 AD |
1100 | static void |
1101 | mtl_get_freq_caps(struct intel_rps *rps, struct intel_rps_freq_caps *caps) | |
1102 | { | |
1103 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
1104 | u32 rp_state_cap = rps_to_gt(rps)->type == GT_MEDIA ? | |
1105 | intel_uncore_read(uncore, MTL_MEDIAP_STATE_CAP) : | |
1106 | intel_uncore_read(uncore, MTL_RP_STATE_CAP); | |
1107 | u32 rpe = rps_to_gt(rps)->type == GT_MEDIA ? | |
1108 | intel_uncore_read(uncore, MTL_MPE_FREQUENCY) : | |
1109 | intel_uncore_read(uncore, MTL_GT_RPE_FREQUENCY); | |
1110 | ||
1111 | /* MTL values are in units of 16.67 MHz */ | |
1112 | caps->rp0_freq = REG_FIELD_GET(MTL_RP0_CAP_MASK, rp_state_cap); | |
1113 | caps->min_freq = REG_FIELD_GET(MTL_RPN_CAP_MASK, rp_state_cap); | |
1114 | caps->rp1_freq = REG_FIELD_GET(MTL_RPE_MASK, rpe); | |
1115 | } | |
1116 | ||
1117 | static void | |
1118 | __gen6_rps_get_freq_caps(struct intel_rps *rps, struct intel_rps_freq_caps *caps) | |
3e7abf81 AS |
1119 | { |
1120 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
56758cc4 | 1121 | u32 rp_state_cap; |
3e7abf81 | 1122 | |
56758cc4 | 1123 | rp_state_cap = intel_rps_read_state_cap(rps); |
3e7abf81 AS |
1124 | |
1125 | /* static values from HW: RP0 > RP1 > RPn (min_freq) */ | |
1126 | if (IS_GEN9_LP(i915)) { | |
56758cc4 AD |
1127 | caps->rp0_freq = (rp_state_cap >> 16) & 0xff; |
1128 | caps->rp1_freq = (rp_state_cap >> 8) & 0xff; | |
1129 | caps->min_freq = (rp_state_cap >> 0) & 0xff; | |
3e7abf81 | 1130 | } else { |
56758cc4 | 1131 | caps->rp0_freq = (rp_state_cap >> 0) & 0xff; |
95ccf312 VB |
1132 | if (GRAPHICS_VER(i915) >= 10) |
1133 | caps->rp1_freq = REG_FIELD_GET(RPE_MASK, | |
1134 | intel_uncore_read(to_gt(i915)->uncore, | |
1135 | GEN10_FREQ_INFO_REC)); | |
1136 | else | |
1137 | caps->rp1_freq = (rp_state_cap >> 8) & 0xff; | |
56758cc4 | 1138 | caps->min_freq = (rp_state_cap >> 16) & 0xff; |
3e7abf81 AS |
1139 | } |
1140 | ||
56758cc4 AD |
1141 | if (IS_GEN9_BC(i915) || GRAPHICS_VER(i915) >= 11) { |
1142 | /* | |
1143 | * In this case rp_state_cap register reports frequencies in | |
1144 | * units of 50 MHz. Convert these to the actual "hw unit", i.e. | |
1145 | * units of 16.67 MHz | |
1146 | */ | |
1147 | caps->rp0_freq *= GEN9_FREQ_SCALER; | |
1148 | caps->rp1_freq *= GEN9_FREQ_SCALER; | |
1149 | caps->min_freq *= GEN9_FREQ_SCALER; | |
1150 | } | |
1151 | } | |
1152 | ||
835a4d18 AD |
1153 | /** |
1154 | * gen6_rps_get_freq_caps - Get freq caps exposed by HW | |
1155 | * @rps: the intel_rps structure | |
1156 | * @caps: returned freq caps | |
1157 | * | |
1158 | * Returned "caps" frequencies should be converted to MHz using | |
1159 | * intel_gpu_freq() | |
1160 | */ | |
1161 | void gen6_rps_get_freq_caps(struct intel_rps *rps, struct intel_rps_freq_caps *caps) | |
1162 | { | |
1163 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1164 | ||
14128d64 | 1165 | if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70)) |
835a4d18 AD |
1166 | return mtl_get_freq_caps(rps, caps); |
1167 | else | |
1168 | return __gen6_rps_get_freq_caps(rps, caps); | |
1169 | } | |
1170 | ||
56758cc4 AD |
1171 | static void gen6_rps_init(struct intel_rps *rps) |
1172 | { | |
1173 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1174 | struct intel_rps_freq_caps caps; | |
1175 | ||
1176 | gen6_rps_get_freq_caps(rps, &caps); | |
1177 | rps->rp0_freq = caps.rp0_freq; | |
1178 | rps->rp1_freq = caps.rp1_freq; | |
1179 | rps->min_freq = caps.min_freq; | |
1180 | ||
3e7abf81 AS |
1181 | /* hw_max = RP0 until we check for overclocking */ |
1182 | rps->max_freq = rps->rp0_freq; | |
1183 | ||
1184 | rps->efficient_freq = rps->rp1_freq; | |
1185 | if (IS_HASWELL(i915) || IS_BROADWELL(i915) || | |
6266992c | 1186 | IS_GEN9_BC(i915) || GRAPHICS_VER(i915) >= 11) { |
3e7abf81 | 1187 | u32 ddcc_status = 0; |
56758cc4 | 1188 | u32 mult = 1; |
3e7abf81 | 1189 | |
56758cc4 AD |
1190 | if (IS_GEN9_BC(i915) || GRAPHICS_VER(i915) >= 11) |
1191 | mult = GEN9_FREQ_SCALER; | |
ee421bb4 AD |
1192 | if (snb_pcode_read(rps_to_gt(rps)->uncore, |
1193 | HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL, | |
6650ebcb | 1194 | &ddcc_status, NULL) == 0) |
3e7abf81 | 1195 | rps->efficient_freq = |
56758cc4 AD |
1196 | clamp_t(u32, |
1197 | ((ddcc_status >> 8) & 0xff) * mult, | |
3e7abf81 AS |
1198 | rps->min_freq, |
1199 | rps->max_freq); | |
1200 | } | |
3e7abf81 AS |
1201 | } |
1202 | ||
1203 | static bool rps_reset(struct intel_rps *rps) | |
1204 | { | |
a8fa7c07 | 1205 | struct drm_i915_private *i915 = rps_to_i915(rps); |
555a3224 | 1206 | |
3e7abf81 AS |
1207 | /* force a reset */ |
1208 | rps->power.mode = -1; | |
1209 | rps->last_freq = -1; | |
1210 | ||
28117632 | 1211 | if (rps_set(rps, rps->min_freq, true)) { |
a8fa7c07 | 1212 | drm_err(&i915->drm, "Failed to reset RPS to initial values\n"); |
3e7abf81 AS |
1213 | return false; |
1214 | } | |
1215 | ||
1216 | rps->cur_freq = rps->min_freq; | |
1217 | return true; | |
1218 | } | |
1219 | ||
1220 | /* See the Gen9_GT_PM_Programming_Guide doc for the below */ | |
1221 | static bool gen9_rps_enable(struct intel_rps *rps) | |
1222 | { | |
9c878557 CW |
1223 | struct intel_gt *gt = rps_to_gt(rps); |
1224 | struct intel_uncore *uncore = gt->uncore; | |
3e7abf81 AS |
1225 | |
1226 | /* Program defaults and thresholds for RPS */ | |
c816723b | 1227 | if (GRAPHICS_VER(gt->i915) == 9) |
3e7abf81 AS |
1228 | intel_uncore_write_fw(uncore, GEN6_RC_VIDEO_FREQ, |
1229 | GEN9_FREQUENCY(rps->rp1_freq)); | |
1230 | ||
3e7abf81 AS |
1231 | intel_uncore_write_fw(uncore, GEN6_RP_IDLE_HYSTERSIS, 0xa); |
1232 | ||
1ebf7aaf CW |
1233 | rps->pm_events = GEN6_PM_RP_UP_THRESHOLD | GEN6_PM_RP_DOWN_THRESHOLD; |
1234 | ||
3e7abf81 AS |
1235 | return rps_reset(rps); |
1236 | } | |
1237 | ||
1238 | static bool gen8_rps_enable(struct intel_rps *rps) | |
1239 | { | |
1240 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
1241 | ||
1242 | intel_uncore_write_fw(uncore, GEN6_RC_VIDEO_FREQ, | |
1243 | HSW_FREQUENCY(rps->rp1_freq)); | |
1244 | ||
3e7abf81 AS |
1245 | intel_uncore_write_fw(uncore, GEN6_RP_IDLE_HYSTERSIS, 10); |
1246 | ||
1ebf7aaf CW |
1247 | rps->pm_events = GEN6_PM_RP_UP_THRESHOLD | GEN6_PM_RP_DOWN_THRESHOLD; |
1248 | ||
3e7abf81 AS |
1249 | return rps_reset(rps); |
1250 | } | |
1251 | ||
1252 | static bool gen6_rps_enable(struct intel_rps *rps) | |
1253 | { | |
1254 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
1255 | ||
1256 | /* Power down if completely idle for over 50ms */ | |
1257 | intel_uncore_write_fw(uncore, GEN6_RP_DOWN_TIMEOUT, 50000); | |
1258 | intel_uncore_write_fw(uncore, GEN6_RP_IDLE_HYSTERSIS, 10); | |
1259 | ||
1ebf7aaf CW |
1260 | rps->pm_events = (GEN6_PM_RP_UP_THRESHOLD | |
1261 | GEN6_PM_RP_DOWN_THRESHOLD | | |
1262 | GEN6_PM_RP_DOWN_TIMEOUT); | |
1263 | ||
3e7abf81 AS |
1264 | return rps_reset(rps); |
1265 | } | |
1266 | ||
1267 | static int chv_rps_max_freq(struct intel_rps *rps) | |
1268 | { | |
1269 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
0b6613c6 | 1270 | struct intel_gt *gt = rps_to_gt(rps); |
3e7abf81 AS |
1271 | u32 val; |
1272 | ||
1273 | val = vlv_punit_read(i915, FB_GFX_FMAX_AT_VMAX_FUSE); | |
1274 | ||
0b6613c6 | 1275 | switch (gt->info.sseu.eu_total) { |
3e7abf81 AS |
1276 | case 8: |
1277 | /* (2 * 4) config */ | |
1278 | val >>= FB_GFX_FMAX_AT_VMAX_2SS4EU_FUSE_SHIFT; | |
1279 | break; | |
1280 | case 12: | |
1281 | /* (2 * 6) config */ | |
1282 | val >>= FB_GFX_FMAX_AT_VMAX_2SS6EU_FUSE_SHIFT; | |
1283 | break; | |
1284 | case 16: | |
1285 | /* (2 * 8) config */ | |
1286 | default: | |
1287 | /* Setting (2 * 8) Min RP0 for any other combination */ | |
1288 | val >>= FB_GFX_FMAX_AT_VMAX_2SS8EU_FUSE_SHIFT; | |
1289 | break; | |
1290 | } | |
1291 | ||
1292 | return val & FB_GFX_FREQ_FUSE_MASK; | |
1293 | } | |
1294 | ||
1295 | static int chv_rps_rpe_freq(struct intel_rps *rps) | |
1296 | { | |
1297 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1298 | u32 val; | |
1299 | ||
1300 | val = vlv_punit_read(i915, PUNIT_GPU_DUTYCYCLE_REG); | |
1301 | val >>= PUNIT_GPU_DUTYCYCLE_RPE_FREQ_SHIFT; | |
1302 | ||
1303 | return val & PUNIT_GPU_DUTYCYCLE_RPE_FREQ_MASK; | |
1304 | } | |
1305 | ||
1306 | static int chv_rps_guar_freq(struct intel_rps *rps) | |
1307 | { | |
1308 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1309 | u32 val; | |
1310 | ||
1311 | val = vlv_punit_read(i915, FB_GFX_FMAX_AT_VMAX_FUSE); | |
1312 | ||
1313 | return val & FB_GFX_FREQ_FUSE_MASK; | |
1314 | } | |
1315 | ||
1316 | static u32 chv_rps_min_freq(struct intel_rps *rps) | |
1317 | { | |
1318 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1319 | u32 val; | |
1320 | ||
1321 | val = vlv_punit_read(i915, FB_GFX_FMIN_AT_VMIN_FUSE); | |
1322 | val >>= FB_GFX_FMIN_AT_VMIN_FUSE_SHIFT; | |
1323 | ||
1324 | return val & FB_GFX_FREQ_FUSE_MASK; | |
1325 | } | |
1326 | ||
1327 | static bool chv_rps_enable(struct intel_rps *rps) | |
1328 | { | |
1329 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
1330 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1331 | u32 val; | |
1332 | ||
1333 | /* 1: Program defaults and thresholds for RPS*/ | |
1334 | intel_uncore_write_fw(uncore, GEN6_RP_DOWN_TIMEOUT, 1000000); | |
1335 | intel_uncore_write_fw(uncore, GEN6_RP_UP_THRESHOLD, 59400); | |
1336 | intel_uncore_write_fw(uncore, GEN6_RP_DOWN_THRESHOLD, 245000); | |
1337 | intel_uncore_write_fw(uncore, GEN6_RP_UP_EI, 66000); | |
1338 | intel_uncore_write_fw(uncore, GEN6_RP_DOWN_EI, 350000); | |
1339 | ||
1340 | intel_uncore_write_fw(uncore, GEN6_RP_IDLE_HYSTERSIS, 10); | |
1341 | ||
1342 | /* 2: Enable RPS */ | |
1343 | intel_uncore_write_fw(uncore, GEN6_RP_CONTROL, | |
1344 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
1345 | GEN6_RP_MEDIA_IS_GFX | | |
1346 | GEN6_RP_ENABLE | | |
1347 | GEN6_RP_UP_BUSY_AVG | | |
1348 | GEN6_RP_DOWN_IDLE_AVG); | |
1349 | ||
1ebf7aaf CW |
1350 | rps->pm_events = (GEN6_PM_RP_UP_THRESHOLD | |
1351 | GEN6_PM_RP_DOWN_THRESHOLD | | |
1352 | GEN6_PM_RP_DOWN_TIMEOUT); | |
1353 | ||
3e7abf81 AS |
1354 | /* Setting Fixed Bias */ |
1355 | vlv_punit_get(i915); | |
1356 | ||
1357 | val = VLV_OVERRIDE_EN | VLV_SOC_TDP_EN | CHV_BIAS_CPU_50_SOC_50; | |
1358 | vlv_punit_write(i915, VLV_TURBO_SOC_OVERRIDE, val); | |
1359 | ||
1360 | val = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS); | |
1361 | ||
1362 | vlv_punit_put(i915); | |
1363 | ||
1364 | /* RPS code assumes GPLL is used */ | |
0d4c351a PB |
1365 | drm_WARN_ONCE(&i915->drm, (val & GPLLENABLE) == 0, |
1366 | "GPLL not enabled\n"); | |
3e7abf81 | 1367 | |
01fabda8 LDM |
1368 | drm_dbg(&i915->drm, "GPLL enabled? %s\n", |
1369 | str_yes_no(val & GPLLENABLE)); | |
a8fa7c07 | 1370 | drm_dbg(&i915->drm, "GPU status: 0x%08x\n", val); |
3e7abf81 AS |
1371 | |
1372 | return rps_reset(rps); | |
1373 | } | |
1374 | ||
1375 | static int vlv_rps_guar_freq(struct intel_rps *rps) | |
1376 | { | |
1377 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1378 | u32 val, rp1; | |
1379 | ||
1380 | val = vlv_nc_read(i915, IOSF_NC_FB_GFX_FREQ_FUSE); | |
1381 | ||
1382 | rp1 = val & FB_GFX_FGUARANTEED_FREQ_FUSE_MASK; | |
1383 | rp1 >>= FB_GFX_FGUARANTEED_FREQ_FUSE_SHIFT; | |
1384 | ||
1385 | return rp1; | |
1386 | } | |
1387 | ||
1388 | static int vlv_rps_max_freq(struct intel_rps *rps) | |
1389 | { | |
1390 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1391 | u32 val, rp0; | |
1392 | ||
1393 | val = vlv_nc_read(i915, IOSF_NC_FB_GFX_FREQ_FUSE); | |
1394 | ||
1395 | rp0 = (val & FB_GFX_MAX_FREQ_FUSE_MASK) >> FB_GFX_MAX_FREQ_FUSE_SHIFT; | |
1396 | /* Clamp to max */ | |
1397 | rp0 = min_t(u32, rp0, 0xea); | |
1398 | ||
1399 | return rp0; | |
1400 | } | |
1401 | ||
1402 | static int vlv_rps_rpe_freq(struct intel_rps *rps) | |
1403 | { | |
1404 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1405 | u32 val, rpe; | |
1406 | ||
1407 | val = vlv_nc_read(i915, IOSF_NC_FB_GFX_FMAX_FUSE_LO); | |
1408 | rpe = (val & FB_FMAX_VMIN_FREQ_LO_MASK) >> FB_FMAX_VMIN_FREQ_LO_SHIFT; | |
1409 | val = vlv_nc_read(i915, IOSF_NC_FB_GFX_FMAX_FUSE_HI); | |
1410 | rpe |= (val & FB_FMAX_VMIN_FREQ_HI_MASK) << 5; | |
1411 | ||
1412 | return rpe; | |
1413 | } | |
1414 | ||
1415 | static int vlv_rps_min_freq(struct intel_rps *rps) | |
1416 | { | |
1417 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1418 | u32 val; | |
1419 | ||
1420 | val = vlv_punit_read(i915, PUNIT_REG_GPU_LFM) & 0xff; | |
1421 | /* | |
1422 | * According to the BYT Punit GPU turbo HAS 1.1.6.3 the minimum value | |
1423 | * for the minimum frequency in GPLL mode is 0xc1. Contrary to this on | |
1424 | * a BYT-M B0 the above register contains 0xbf. Moreover when setting | |
1425 | * a frequency Punit will not allow values below 0xc0. Clamp it 0xc0 | |
1426 | * to make sure it matches what Punit accepts. | |
1427 | */ | |
1428 | return max_t(u32, val, 0xc0); | |
1429 | } | |
1430 | ||
1431 | static bool vlv_rps_enable(struct intel_rps *rps) | |
1432 | { | |
1433 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
1434 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1435 | u32 val; | |
1436 | ||
1437 | intel_uncore_write_fw(uncore, GEN6_RP_DOWN_TIMEOUT, 1000000); | |
1438 | intel_uncore_write_fw(uncore, GEN6_RP_UP_THRESHOLD, 59400); | |
1439 | intel_uncore_write_fw(uncore, GEN6_RP_DOWN_THRESHOLD, 245000); | |
1440 | intel_uncore_write_fw(uncore, GEN6_RP_UP_EI, 66000); | |
1441 | intel_uncore_write_fw(uncore, GEN6_RP_DOWN_EI, 350000); | |
1442 | ||
1443 | intel_uncore_write_fw(uncore, GEN6_RP_IDLE_HYSTERSIS, 10); | |
1444 | ||
1445 | intel_uncore_write_fw(uncore, GEN6_RP_CONTROL, | |
1446 | GEN6_RP_MEDIA_TURBO | | |
1447 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
1448 | GEN6_RP_MEDIA_IS_GFX | | |
1449 | GEN6_RP_ENABLE | | |
1450 | GEN6_RP_UP_BUSY_AVG | | |
1451 | GEN6_RP_DOWN_IDLE_CONT); | |
1452 | ||
1ebf7aaf CW |
1453 | /* WaGsvRC0ResidencyMethod:vlv */ |
1454 | rps->pm_events = GEN6_PM_RP_UP_EI_EXPIRED; | |
1455 | ||
3e7abf81 AS |
1456 | vlv_punit_get(i915); |
1457 | ||
1458 | /* Setting Fixed Bias */ | |
1459 | val = VLV_OVERRIDE_EN | VLV_SOC_TDP_EN | VLV_BIAS_CPU_125_SOC_875; | |
1460 | vlv_punit_write(i915, VLV_TURBO_SOC_OVERRIDE, val); | |
1461 | ||
1462 | val = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS); | |
1463 | ||
1464 | vlv_punit_put(i915); | |
1465 | ||
1466 | /* RPS code assumes GPLL is used */ | |
0d4c351a PB |
1467 | drm_WARN_ONCE(&i915->drm, (val & GPLLENABLE) == 0, |
1468 | "GPLL not enabled\n"); | |
3e7abf81 | 1469 | |
01fabda8 LDM |
1470 | drm_dbg(&i915->drm, "GPLL enabled? %s\n", |
1471 | str_yes_no(val & GPLLENABLE)); | |
a8fa7c07 | 1472 | drm_dbg(&i915->drm, "GPU status: 0x%08x\n", val); |
3e7abf81 AS |
1473 | |
1474 | return rps_reset(rps); | |
1475 | } | |
1476 | ||
1477 | static unsigned long __ips_gfx_val(struct intel_ips *ips) | |
1478 | { | |
1479 | struct intel_rps *rps = container_of(ips, typeof(*rps), ips); | |
1480 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
d08c4e23 | 1481 | unsigned int t, state1, state2; |
3e7abf81 | 1482 | u32 pxvid, ext_v; |
d08c4e23 | 1483 | u64 corr, corr2; |
3e7abf81 AS |
1484 | |
1485 | lockdep_assert_held(&mchdev_lock); | |
1486 | ||
1487 | pxvid = intel_uncore_read(uncore, PXVFREQ(rps->cur_freq)); | |
1488 | pxvid = (pxvid >> 24) & 0x7f; | |
1489 | ext_v = pvid_to_extvid(rps_to_i915(rps), pxvid); | |
1490 | ||
1491 | state1 = ext_v; | |
1492 | ||
1493 | /* Revel in the empirically derived constants */ | |
1494 | ||
1495 | /* Correction factor in 1/100000 units */ | |
1496 | t = ips_mch_val(uncore); | |
1497 | if (t > 80) | |
1498 | corr = t * 2349 + 135940; | |
1499 | else if (t >= 50) | |
1500 | corr = t * 964 + 29317; | |
1501 | else /* < 50 */ | |
1502 | corr = t * 301 + 1004; | |
1503 | ||
d08c4e23 VS |
1504 | corr = div_u64(corr * 150142 * state1, 10000) - 78642; |
1505 | corr2 = div_u64(corr, 100000) * ips->corr; | |
3e7abf81 | 1506 | |
d08c4e23 | 1507 | state2 = div_u64(corr2 * state1, 10000); |
3e7abf81 AS |
1508 | state2 /= 100; /* convert to mW */ |
1509 | ||
1510 | __gen5_ips_update(ips); | |
1511 | ||
1512 | return ips->gfx_power + state2; | |
1513 | } | |
1514 | ||
36d516be CW |
1515 | static bool has_busy_stats(struct intel_rps *rps) |
1516 | { | |
1517 | struct intel_engine_cs *engine; | |
1518 | enum intel_engine_id id; | |
1519 | ||
1520 | for_each_engine(engine, rps_to_gt(rps), id) { | |
1521 | if (!intel_engine_supports_stats(engine)) | |
1522 | return false; | |
1523 | } | |
1524 | ||
1525 | return true; | |
1526 | } | |
1527 | ||
3e7abf81 AS |
1528 | void intel_rps_enable(struct intel_rps *rps) |
1529 | { | |
1530 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1531 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
9bad2adb | 1532 | bool enabled = false; |
3e7abf81 | 1533 | |
9c878557 CW |
1534 | if (!HAS_RPS(i915)) |
1535 | return; | |
1536 | ||
7ba79a67 VB |
1537 | if (rps_uses_slpc(rps)) |
1538 | return; | |
1539 | ||
9c878557 CW |
1540 | intel_gt_check_clock_frequency(rps_to_gt(rps)); |
1541 | ||
3e7abf81 | 1542 | intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL); |
9bad2adb CW |
1543 | if (rps->max_freq <= rps->min_freq) |
1544 | /* leave disabled, no room for dynamic reclocking */; | |
1545 | else if (IS_CHERRYVIEW(i915)) | |
1546 | enabled = chv_rps_enable(rps); | |
3e7abf81 | 1547 | else if (IS_VALLEYVIEW(i915)) |
9bad2adb | 1548 | enabled = vlv_rps_enable(rps); |
c816723b | 1549 | else if (GRAPHICS_VER(i915) >= 9) |
9bad2adb | 1550 | enabled = gen9_rps_enable(rps); |
c816723b | 1551 | else if (GRAPHICS_VER(i915) >= 8) |
9bad2adb | 1552 | enabled = gen8_rps_enable(rps); |
c816723b | 1553 | else if (GRAPHICS_VER(i915) >= 6) |
9bad2adb | 1554 | enabled = gen6_rps_enable(rps); |
3e7abf81 | 1555 | else if (IS_IRONLAKE_M(i915)) |
9bad2adb CW |
1556 | enabled = gen5_rps_enable(rps); |
1557 | else | |
c816723b | 1558 | MISSING_CASE(GRAPHICS_VER(i915)); |
3e7abf81 | 1559 | intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL); |
9bad2adb | 1560 | if (!enabled) |
3e7abf81 AS |
1561 | return; |
1562 | ||
555a3224 | 1563 | GT_TRACE(rps_to_gt(rps), |
c2307b7f | 1564 | "min:%x, max:%x, freq:[%d, %d], thresholds:[%u, %u]\n", |
555a3224 CW |
1565 | rps->min_freq, rps->max_freq, |
1566 | intel_gpu_freq(rps, rps->min_freq), | |
c2307b7f TU |
1567 | intel_gpu_freq(rps, rps->max_freq), |
1568 | rps->power.up_threshold, | |
1569 | rps->power.down_threshold); | |
3e7abf81 | 1570 | |
555a3224 CW |
1571 | GEM_BUG_ON(rps->max_freq < rps->min_freq); |
1572 | GEM_BUG_ON(rps->idle_freq > rps->max_freq); | |
1573 | ||
1574 | GEM_BUG_ON(rps->efficient_freq < rps->min_freq); | |
1575 | GEM_BUG_ON(rps->efficient_freq > rps->max_freq); | |
9bad2adb | 1576 | |
36d516be CW |
1577 | if (has_busy_stats(rps)) |
1578 | intel_rps_set_timer(rps); | |
bbd57d16 | 1579 | else if (GRAPHICS_VER(i915) >= 6 && GRAPHICS_VER(i915) <= 11) |
8e99299a CW |
1580 | intel_rps_set_interrupts(rps); |
1581 | else | |
1582 | /* Ironlake currently uses intel_ips.ko */ {} | |
1583 | ||
9bad2adb | 1584 | intel_rps_set_enabled(rps); |
3e7abf81 AS |
1585 | } |
1586 | ||
1587 | static void gen6_rps_disable(struct intel_rps *rps) | |
1588 | { | |
35cc7f32 | 1589 | set(rps_to_uncore(rps), GEN6_RP_CONTROL, 0); |
3e7abf81 AS |
1590 | } |
1591 | ||
1592 | void intel_rps_disable(struct intel_rps *rps) | |
1593 | { | |
1594 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1595 | ||
68eb42b3 RV |
1596 | if (!intel_rps_is_enabled(rps)) |
1597 | return; | |
1598 | ||
9bad2adb | 1599 | intel_rps_clear_enabled(rps); |
8e99299a | 1600 | intel_rps_clear_interrupts(rps); |
36d516be | 1601 | intel_rps_clear_timer(rps); |
3e7abf81 | 1602 | |
c816723b | 1603 | if (GRAPHICS_VER(i915) >= 6) |
3e7abf81 AS |
1604 | gen6_rps_disable(rps); |
1605 | else if (IS_IRONLAKE_M(i915)) | |
1606 | gen5_rps_disable(rps); | |
1607 | } | |
1608 | ||
1609 | static int byt_gpu_freq(struct intel_rps *rps, int val) | |
1610 | { | |
1611 | /* | |
1612 | * N = val - 0xb7 | |
1613 | * Slow = Fast = GPLL ref * N | |
1614 | */ | |
1615 | return DIV_ROUND_CLOSEST(rps->gpll_ref_freq * (val - 0xb7), 1000); | |
1616 | } | |
1617 | ||
1618 | static int byt_freq_opcode(struct intel_rps *rps, int val) | |
1619 | { | |
1620 | return DIV_ROUND_CLOSEST(1000 * val, rps->gpll_ref_freq) + 0xb7; | |
1621 | } | |
1622 | ||
1623 | static int chv_gpu_freq(struct intel_rps *rps, int val) | |
1624 | { | |
1625 | /* | |
1626 | * N = val / 2 | |
1627 | * CU (slow) = CU2x (fast) / 2 = GPLL ref * N / 2 | |
1628 | */ | |
1629 | return DIV_ROUND_CLOSEST(rps->gpll_ref_freq * val, 2 * 2 * 1000); | |
1630 | } | |
1631 | ||
1632 | static int chv_freq_opcode(struct intel_rps *rps, int val) | |
1633 | { | |
1634 | /* CHV needs even values */ | |
1635 | return DIV_ROUND_CLOSEST(2 * 1000 * val, rps->gpll_ref_freq) * 2; | |
1636 | } | |
1637 | ||
1638 | int intel_gpu_freq(struct intel_rps *rps, int val) | |
1639 | { | |
1640 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1641 | ||
c816723b | 1642 | if (GRAPHICS_VER(i915) >= 9) |
3e7abf81 AS |
1643 | return DIV_ROUND_CLOSEST(val * GT_FREQUENCY_MULTIPLIER, |
1644 | GEN9_FREQ_SCALER); | |
1645 | else if (IS_CHERRYVIEW(i915)) | |
1646 | return chv_gpu_freq(rps, val); | |
1647 | else if (IS_VALLEYVIEW(i915)) | |
1648 | return byt_gpu_freq(rps, val); | |
c816723b | 1649 | else if (GRAPHICS_VER(i915) >= 6) |
3e7abf81 | 1650 | return val * GT_FREQUENCY_MULTIPLIER; |
e82351e7 VS |
1651 | else |
1652 | return val; | |
3e7abf81 AS |
1653 | } |
1654 | ||
1655 | int intel_freq_opcode(struct intel_rps *rps, int val) | |
1656 | { | |
1657 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1658 | ||
c816723b | 1659 | if (GRAPHICS_VER(i915) >= 9) |
3e7abf81 AS |
1660 | return DIV_ROUND_CLOSEST(val * GEN9_FREQ_SCALER, |
1661 | GT_FREQUENCY_MULTIPLIER); | |
1662 | else if (IS_CHERRYVIEW(i915)) | |
1663 | return chv_freq_opcode(rps, val); | |
1664 | else if (IS_VALLEYVIEW(i915)) | |
1665 | return byt_freq_opcode(rps, val); | |
c816723b | 1666 | else if (GRAPHICS_VER(i915) >= 6) |
3e7abf81 | 1667 | return DIV_ROUND_CLOSEST(val, GT_FREQUENCY_MULTIPLIER); |
e82351e7 VS |
1668 | else |
1669 | return val; | |
3e7abf81 AS |
1670 | } |
1671 | ||
1672 | static void vlv_init_gpll_ref_freq(struct intel_rps *rps) | |
1673 | { | |
1674 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
1675 | ||
1676 | rps->gpll_ref_freq = | |
1677 | vlv_get_cck_clock(i915, "GPLL ref", | |
1678 | CCK_GPLL_CLOCK_CONTROL, | |
1679 | i915->czclk_freq); | |
1680 | ||
a8fa7c07 WK |
1681 | drm_dbg(&i915->drm, "GPLL reference freq: %d kHz\n", |
1682 | rps->gpll_ref_freq); | |
3e7abf81 AS |
1683 | } |
1684 | ||
1685 | static void vlv_rps_init(struct intel_rps *rps) | |
1686 | { | |
1687 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
3e7abf81 AS |
1688 | |
1689 | vlv_iosf_sb_get(i915, | |
1690 | BIT(VLV_IOSF_SB_PUNIT) | | |
1691 | BIT(VLV_IOSF_SB_NC) | | |
1692 | BIT(VLV_IOSF_SB_CCK)); | |
1693 | ||
1694 | vlv_init_gpll_ref_freq(rps); | |
1695 | ||
3e7abf81 AS |
1696 | rps->max_freq = vlv_rps_max_freq(rps); |
1697 | rps->rp0_freq = rps->max_freq; | |
a8fa7c07 WK |
1698 | drm_dbg(&i915->drm, "max GPU freq: %d MHz (%u)\n", |
1699 | intel_gpu_freq(rps, rps->max_freq), rps->max_freq); | |
3e7abf81 AS |
1700 | |
1701 | rps->efficient_freq = vlv_rps_rpe_freq(rps); | |
a8fa7c07 WK |
1702 | drm_dbg(&i915->drm, "RPe GPU freq: %d MHz (%u)\n", |
1703 | intel_gpu_freq(rps, rps->efficient_freq), rps->efficient_freq); | |
3e7abf81 AS |
1704 | |
1705 | rps->rp1_freq = vlv_rps_guar_freq(rps); | |
a8fa7c07 WK |
1706 | drm_dbg(&i915->drm, "RP1(Guar Freq) GPU freq: %d MHz (%u)\n", |
1707 | intel_gpu_freq(rps, rps->rp1_freq), rps->rp1_freq); | |
3e7abf81 AS |
1708 | |
1709 | rps->min_freq = vlv_rps_min_freq(rps); | |
a8fa7c07 WK |
1710 | drm_dbg(&i915->drm, "min GPU freq: %d MHz (%u)\n", |
1711 | intel_gpu_freq(rps, rps->min_freq), rps->min_freq); | |
3e7abf81 AS |
1712 | |
1713 | vlv_iosf_sb_put(i915, | |
1714 | BIT(VLV_IOSF_SB_PUNIT) | | |
1715 | BIT(VLV_IOSF_SB_NC) | | |
1716 | BIT(VLV_IOSF_SB_CCK)); | |
1717 | } | |
1718 | ||
1719 | static void chv_rps_init(struct intel_rps *rps) | |
1720 | { | |
1721 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
3e7abf81 AS |
1722 | |
1723 | vlv_iosf_sb_get(i915, | |
1724 | BIT(VLV_IOSF_SB_PUNIT) | | |
1725 | BIT(VLV_IOSF_SB_NC) | | |
1726 | BIT(VLV_IOSF_SB_CCK)); | |
1727 | ||
1728 | vlv_init_gpll_ref_freq(rps); | |
1729 | ||
3e7abf81 AS |
1730 | rps->max_freq = chv_rps_max_freq(rps); |
1731 | rps->rp0_freq = rps->max_freq; | |
a8fa7c07 WK |
1732 | drm_dbg(&i915->drm, "max GPU freq: %d MHz (%u)\n", |
1733 | intel_gpu_freq(rps, rps->max_freq), rps->max_freq); | |
3e7abf81 AS |
1734 | |
1735 | rps->efficient_freq = chv_rps_rpe_freq(rps); | |
a8fa7c07 WK |
1736 | drm_dbg(&i915->drm, "RPe GPU freq: %d MHz (%u)\n", |
1737 | intel_gpu_freq(rps, rps->efficient_freq), rps->efficient_freq); | |
3e7abf81 AS |
1738 | |
1739 | rps->rp1_freq = chv_rps_guar_freq(rps); | |
a8fa7c07 WK |
1740 | drm_dbg(&i915->drm, "RP1(Guar) GPU freq: %d MHz (%u)\n", |
1741 | intel_gpu_freq(rps, rps->rp1_freq), rps->rp1_freq); | |
3e7abf81 AS |
1742 | |
1743 | rps->min_freq = chv_rps_min_freq(rps); | |
a8fa7c07 WK |
1744 | drm_dbg(&i915->drm, "min GPU freq: %d MHz (%u)\n", |
1745 | intel_gpu_freq(rps, rps->min_freq), rps->min_freq); | |
3e7abf81 AS |
1746 | |
1747 | vlv_iosf_sb_put(i915, | |
1748 | BIT(VLV_IOSF_SB_PUNIT) | | |
1749 | BIT(VLV_IOSF_SB_NC) | | |
1750 | BIT(VLV_IOSF_SB_CCK)); | |
1751 | ||
0d4c351a PB |
1752 | drm_WARN_ONCE(&i915->drm, (rps->max_freq | rps->efficient_freq | |
1753 | rps->rp1_freq | rps->min_freq) & 1, | |
1754 | "Odd GPU freq values\n"); | |
3e7abf81 AS |
1755 | } |
1756 | ||
1757 | static void vlv_c0_read(struct intel_uncore *uncore, struct intel_rps_ei *ei) | |
1758 | { | |
1759 | ei->ktime = ktime_get_raw(); | |
1760 | ei->render_c0 = intel_uncore_read(uncore, VLV_RENDER_C0_COUNT); | |
1761 | ei->media_c0 = intel_uncore_read(uncore, VLV_MEDIA_C0_COUNT); | |
1762 | } | |
1763 | ||
1764 | static u32 vlv_wa_c0_ei(struct intel_rps *rps, u32 pm_iir) | |
1765 | { | |
1766 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
1767 | const struct intel_rps_ei *prev = &rps->ei; | |
1768 | struct intel_rps_ei now; | |
1769 | u32 events = 0; | |
1770 | ||
1771 | if ((pm_iir & GEN6_PM_RP_UP_EI_EXPIRED) == 0) | |
1772 | return 0; | |
1773 | ||
1774 | vlv_c0_read(uncore, &now); | |
1775 | ||
1776 | if (prev->ktime) { | |
1777 | u64 time, c0; | |
1778 | u32 render, media; | |
1779 | ||
1780 | time = ktime_us_delta(now.ktime, prev->ktime); | |
1781 | ||
1782 | time *= rps_to_i915(rps)->czclk_freq; | |
1783 | ||
1784 | /* Workload can be split between render + media, | |
1785 | * e.g. SwapBuffers being blitted in X after being rendered in | |
1786 | * mesa. To account for this we need to combine both engines | |
1787 | * into our activity counter. | |
1788 | */ | |
1789 | render = now.render_c0 - prev->render_c0; | |
1790 | media = now.media_c0 - prev->media_c0; | |
1791 | c0 = max(render, media); | |
1792 | c0 *= 1000 * 100 << 8; /* to usecs and scale to threshold% */ | |
1793 | ||
1794 | if (c0 > time * rps->power.up_threshold) | |
1795 | events = GEN6_PM_RP_UP_THRESHOLD; | |
1796 | else if (c0 < time * rps->power.down_threshold) | |
1797 | events = GEN6_PM_RP_DOWN_THRESHOLD; | |
1798 | } | |
1799 | ||
1800 | rps->ei = now; | |
1801 | return events; | |
1802 | } | |
1803 | ||
1804 | static void rps_work(struct work_struct *work) | |
1805 | { | |
1806 | struct intel_rps *rps = container_of(work, typeof(*rps), work); | |
1807 | struct intel_gt *gt = rps_to_gt(rps); | |
a8fa7c07 | 1808 | struct drm_i915_private *i915 = rps_to_i915(rps); |
3e7abf81 AS |
1809 | bool client_boost = false; |
1810 | int new_freq, adj, min, max; | |
1811 | u32 pm_iir = 0; | |
1812 | ||
03d2c54d | 1813 | spin_lock_irq(gt->irq_lock); |
1ebf7aaf | 1814 | pm_iir = fetch_and_zero(&rps->pm_iir) & rps->pm_events; |
3e7abf81 | 1815 | client_boost = atomic_read(&rps->num_waiters); |
03d2c54d | 1816 | spin_unlock_irq(gt->irq_lock); |
3e7abf81 AS |
1817 | |
1818 | /* Make sure we didn't queue anything we're not going to process. */ | |
408464b4 | 1819 | if (!pm_iir && !client_boost) |
3e7abf81 AS |
1820 | goto out; |
1821 | ||
1822 | mutex_lock(&rps->lock); | |
9bad2adb CW |
1823 | if (!intel_rps_is_active(rps)) { |
1824 | mutex_unlock(&rps->lock); | |
1825 | return; | |
1826 | } | |
3e7abf81 AS |
1827 | |
1828 | pm_iir |= vlv_wa_c0_ei(rps, pm_iir); | |
1829 | ||
1830 | adj = rps->last_adj; | |
1831 | new_freq = rps->cur_freq; | |
1832 | min = rps->min_freq_softlimit; | |
1833 | max = rps->max_freq_softlimit; | |
1834 | if (client_boost) | |
1835 | max = rps->max_freq; | |
555a3224 CW |
1836 | |
1837 | GT_TRACE(gt, | |
1838 | "pm_iir:%x, client_boost:%s, last:%d, cur:%x, min:%x, max:%x\n", | |
01fabda8 | 1839 | pm_iir, str_yes_no(client_boost), |
555a3224 CW |
1840 | adj, new_freq, min, max); |
1841 | ||
3e7abf81 AS |
1842 | if (client_boost && new_freq < rps->boost_freq) { |
1843 | new_freq = rps->boost_freq; | |
1844 | adj = 0; | |
1845 | } else if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) { | |
1846 | if (adj > 0) | |
1847 | adj *= 2; | |
1848 | else /* CHV needs even encode values */ | |
1849 | adj = IS_CHERRYVIEW(gt->i915) ? 2 : 1; | |
1850 | ||
1851 | if (new_freq >= rps->max_freq_softlimit) | |
1852 | adj = 0; | |
1853 | } else if (client_boost) { | |
1854 | adj = 0; | |
1855 | } else if (pm_iir & GEN6_PM_RP_DOWN_TIMEOUT) { | |
1856 | if (rps->cur_freq > rps->efficient_freq) | |
1857 | new_freq = rps->efficient_freq; | |
1858 | else if (rps->cur_freq > rps->min_freq_softlimit) | |
1859 | new_freq = rps->min_freq_softlimit; | |
1860 | adj = 0; | |
1861 | } else if (pm_iir & GEN6_PM_RP_DOWN_THRESHOLD) { | |
1862 | if (adj < 0) | |
1863 | adj *= 2; | |
1864 | else /* CHV needs even encode values */ | |
1865 | adj = IS_CHERRYVIEW(gt->i915) ? -2 : -1; | |
1866 | ||
1867 | if (new_freq <= rps->min_freq_softlimit) | |
1868 | adj = 0; | |
1869 | } else { /* unknown event */ | |
1870 | adj = 0; | |
1871 | } | |
1872 | ||
3e7abf81 | 1873 | /* |
de3b4d93 CW |
1874 | * sysfs frequency limits may have snuck in while |
1875 | * servicing the interrupt | |
3e7abf81 AS |
1876 | */ |
1877 | new_freq += adj; | |
1878 | new_freq = clamp_t(int, new_freq, min, max); | |
1879 | ||
1880 | if (intel_rps_set(rps, new_freq)) { | |
a8fa7c07 | 1881 | drm_dbg(&i915->drm, "Failed to set new GPU frequency\n"); |
de3b4d93 | 1882 | adj = 0; |
3e7abf81 | 1883 | } |
de3b4d93 | 1884 | rps->last_adj = adj; |
3e7abf81 AS |
1885 | |
1886 | mutex_unlock(&rps->lock); | |
1887 | ||
1888 | out: | |
03d2c54d | 1889 | spin_lock_irq(gt->irq_lock); |
3e7abf81 | 1890 | gen6_gt_pm_unmask_irq(gt, rps->pm_events); |
03d2c54d | 1891 | spin_unlock_irq(gt->irq_lock); |
3e7abf81 AS |
1892 | } |
1893 | ||
1894 | void gen11_rps_irq_handler(struct intel_rps *rps, u32 pm_iir) | |
1895 | { | |
1896 | struct intel_gt *gt = rps_to_gt(rps); | |
1897 | const u32 events = rps->pm_events & pm_iir; | |
1898 | ||
03d2c54d | 1899 | lockdep_assert_held(gt->irq_lock); |
3e7abf81 AS |
1900 | |
1901 | if (unlikely(!events)) | |
1902 | return; | |
1903 | ||
555a3224 CW |
1904 | GT_TRACE(gt, "irq events:%x\n", events); |
1905 | ||
3e7abf81 AS |
1906 | gen6_gt_pm_mask_irq(gt, events); |
1907 | ||
1908 | rps->pm_iir |= events; | |
848a4e5c | 1909 | queue_work(gt->i915->unordered_wq, &rps->work); |
3e7abf81 AS |
1910 | } |
1911 | ||
1912 | void gen6_rps_irq_handler(struct intel_rps *rps, u32 pm_iir) | |
1913 | { | |
5a3e2b82 | 1914 | struct intel_gt *gt = rps_to_gt(rps); |
408464b4 | 1915 | u32 events; |
3e7abf81 | 1916 | |
1ebf7aaf | 1917 | events = pm_iir & rps->pm_events; |
408464b4 | 1918 | if (events) { |
03d2c54d | 1919 | spin_lock(gt->irq_lock); |
408464b4 | 1920 | |
555a3224 CW |
1921 | GT_TRACE(gt, "irq events:%x\n", events); |
1922 | ||
408464b4 CW |
1923 | gen6_gt_pm_mask_irq(gt, events); |
1924 | rps->pm_iir |= events; | |
1925 | ||
848a4e5c | 1926 | queue_work(gt->i915->unordered_wq, &rps->work); |
03d2c54d | 1927 | spin_unlock(gt->irq_lock); |
3e7abf81 AS |
1928 | } |
1929 | ||
c816723b | 1930 | if (GRAPHICS_VER(gt->i915) >= 8) |
3e7abf81 AS |
1931 | return; |
1932 | ||
1933 | if (pm_iir & PM_VEBOX_USER_INTERRUPT) | |
0669a6e1 | 1934 | intel_engine_cs_irq(gt->engine[VECS0], pm_iir >> 10); |
3e7abf81 AS |
1935 | |
1936 | if (pm_iir & PM_VEBOX_CS_ERROR_INTERRUPT) | |
a10234fd TU |
1937 | drm_dbg(&rps_to_i915(rps)->drm, |
1938 | "Command parser error, pm_iir 0x%08x\n", pm_iir); | |
3e7abf81 AS |
1939 | } |
1940 | ||
1941 | void gen5_rps_irq_handler(struct intel_rps *rps) | |
1942 | { | |
1943 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
1944 | u32 busy_up, busy_down, max_avg, min_avg; | |
1945 | u8 new_freq; | |
1946 | ||
1947 | spin_lock(&mchdev_lock); | |
1948 | ||
1949 | intel_uncore_write16(uncore, | |
1950 | MEMINTRSTS, | |
1951 | intel_uncore_read(uncore, MEMINTRSTS)); | |
1952 | ||
1953 | intel_uncore_write16(uncore, MEMINTRSTS, MEMINT_EVAL_CHG); | |
1954 | busy_up = intel_uncore_read(uncore, RCPREVBSYTUPAVG); | |
1955 | busy_down = intel_uncore_read(uncore, RCPREVBSYTDNAVG); | |
1956 | max_avg = intel_uncore_read(uncore, RCBMAXAVG); | |
1957 | min_avg = intel_uncore_read(uncore, RCBMINAVG); | |
1958 | ||
1959 | /* Handle RCS change request from hw */ | |
1960 | new_freq = rps->cur_freq; | |
1961 | if (busy_up > max_avg) | |
1962 | new_freq++; | |
1963 | else if (busy_down < min_avg) | |
1964 | new_freq--; | |
1965 | new_freq = clamp(new_freq, | |
1966 | rps->min_freq_softlimit, | |
1967 | rps->max_freq_softlimit); | |
1968 | ||
4ee73792 | 1969 | if (new_freq != rps->cur_freq && !__gen5_rps_set(rps, new_freq)) |
3e7abf81 AS |
1970 | rps->cur_freq = new_freq; |
1971 | ||
1972 | spin_unlock(&mchdev_lock); | |
1973 | } | |
1974 | ||
a06375a9 | 1975 | void intel_rps_init_early(struct intel_rps *rps) |
3e7abf81 | 1976 | { |
3e7abf81 AS |
1977 | mutex_init(&rps->lock); |
1978 | mutex_init(&rps->power.mutex); | |
1979 | ||
1980 | INIT_WORK(&rps->work, rps_work); | |
36d516be | 1981 | timer_setup(&rps->timer, rps_timer, 0); |
3e7abf81 AS |
1982 | |
1983 | atomic_set(&rps->num_waiters, 0); | |
a06375a9 CW |
1984 | } |
1985 | ||
1986 | void intel_rps_init(struct intel_rps *rps) | |
1987 | { | |
1988 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
3e7abf81 | 1989 | |
7ba79a67 VB |
1990 | if (rps_uses_slpc(rps)) |
1991 | return; | |
1992 | ||
3e7abf81 AS |
1993 | if (IS_CHERRYVIEW(i915)) |
1994 | chv_rps_init(rps); | |
1995 | else if (IS_VALLEYVIEW(i915)) | |
1996 | vlv_rps_init(rps); | |
c816723b | 1997 | else if (GRAPHICS_VER(i915) >= 6) |
3e7abf81 AS |
1998 | gen6_rps_init(rps); |
1999 | else if (IS_IRONLAKE_M(i915)) | |
2000 | gen5_rps_init(rps); | |
2001 | ||
2002 | /* Derive initial user preferences/limits from the hardware limits */ | |
2003 | rps->max_freq_softlimit = rps->max_freq; | |
fdff0a85 | 2004 | rps_to_gt(rps)->defaults.max_freq = rps->max_freq_softlimit; |
3e7abf81 | 2005 | rps->min_freq_softlimit = rps->min_freq; |
fdff0a85 | 2006 | rps_to_gt(rps)->defaults.min_freq = rps->min_freq_softlimit; |
3e7abf81 AS |
2007 | |
2008 | /* After setting max-softlimit, find the overclock max freq */ | |
c816723b | 2009 | if (GRAPHICS_VER(i915) == 6 || IS_IVYBRIDGE(i915) || IS_HASWELL(i915)) { |
3e7abf81 AS |
2010 | u32 params = 0; |
2011 | ||
ee421bb4 | 2012 | snb_pcode_read(rps_to_gt(rps)->uncore, GEN6_READ_OC_PARAMS, ¶ms, NULL); |
3e7abf81 | 2013 | if (params & BIT(31)) { /* OC supported */ |
a8fa7c07 WK |
2014 | drm_dbg(&i915->drm, |
2015 | "Overclocking supported, max: %dMHz, overclock: %dMHz\n", | |
2016 | (rps->max_freq & 0xff) * 50, | |
2017 | (params & 0xff) * 50); | |
3e7abf81 AS |
2018 | rps->max_freq = params & 0xff; |
2019 | } | |
2020 | } | |
2021 | ||
c2307b7f TU |
2022 | /* Set default thresholds in % */ |
2023 | rps->power.up_threshold = 95; | |
c1886222 | 2024 | rps_to_gt(rps)->defaults.rps_up_threshold = rps->power.up_threshold; |
c2307b7f | 2025 | rps->power.down_threshold = 85; |
c1886222 | 2026 | rps_to_gt(rps)->defaults.rps_down_threshold = rps->power.down_threshold; |
c2307b7f | 2027 | |
3e7abf81 AS |
2028 | /* Finally allow us to boost to max by default */ |
2029 | rps->boost_freq = rps->max_freq; | |
2030 | rps->idle_freq = rps->min_freq; | |
043cd2d1 CW |
2031 | |
2032 | /* Start in the middle, from here we will autotune based on workload */ | |
2033 | rps->cur_freq = rps->efficient_freq; | |
3e7abf81 AS |
2034 | |
2035 | rps->pm_intrmsk_mbz = 0; | |
2036 | ||
2037 | /* | |
2038 | * SNB,IVB,HSW can while VLV,CHV may hard hang on looping batchbuffer | |
2039 | * if GEN6_PM_UP_EI_EXPIRED is masked. | |
2040 | * | |
2041 | * TODO: verify if this can be reproduced on VLV,CHV. | |
2042 | */ | |
c816723b | 2043 | if (GRAPHICS_VER(i915) <= 7) |
3e7abf81 AS |
2044 | rps->pm_intrmsk_mbz |= GEN6_PM_RP_UP_EI_EXPIRED; |
2045 | ||
c816723b | 2046 | if (GRAPHICS_VER(i915) >= 8 && GRAPHICS_VER(i915) < 11) |
3e7abf81 | 2047 | rps->pm_intrmsk_mbz |= GEN8_PMINTR_DISABLE_REDIRECT_TO_GUC; |
933864af MB |
2048 | |
2049 | /* GuC needs ARAT expired interrupt unmasked */ | |
2050 | if (intel_uc_uses_guc_submission(&rps_to_gt(rps)->uc)) | |
2051 | rps->pm_intrmsk_mbz |= ARAT_EXPIRED_INTRMSK; | |
389b7f00 | 2052 | } |
8e99299a | 2053 | |
389b7f00 CW |
2054 | void intel_rps_sanitize(struct intel_rps *rps) |
2055 | { | |
7ba79a67 VB |
2056 | if (rps_uses_slpc(rps)) |
2057 | return; | |
2058 | ||
c816723b | 2059 | if (GRAPHICS_VER(rps_to_i915(rps)) >= 6) |
8e99299a | 2060 | rps_disable_interrupts(rps); |
3e7abf81 AS |
2061 | } |
2062 | ||
01b8c2e6 DH |
2063 | u32 intel_rps_read_rpstat(struct intel_rps *rps) |
2064 | { | |
2065 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
2066 | i915_reg_t rpstat; | |
2067 | ||
2068 | rpstat = (GRAPHICS_VER(i915) >= 12) ? GEN12_RPSTAT1 : GEN6_RPSTAT1; | |
2069 | ||
2070 | return intel_uncore_read(rps_to_gt(rps)->uncore, rpstat); | |
2071 | } | |
2072 | ||
44df42e6 | 2073 | static u32 intel_rps_get_cagf(struct intel_rps *rps, u32 rpstat) |
3e7abf81 AS |
2074 | { |
2075 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
2076 | u32 cagf; | |
2077 | ||
22009b6d BN |
2078 | if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70)) |
2079 | cagf = REG_FIELD_GET(MTL_CAGF_MASK, rpstat); | |
2080 | else if (GRAPHICS_VER(i915) >= 12) | |
01b8c2e6 DH |
2081 | cagf = REG_FIELD_GET(GEN12_CAGF_MASK, rpstat); |
2082 | else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) | |
2c0a284c | 2083 | cagf = REG_FIELD_GET(RPE_MASK, rpstat); |
c816723b | 2084 | else if (GRAPHICS_VER(i915) >= 9) |
2c0a284c | 2085 | cagf = REG_FIELD_GET(GEN9_CAGF_MASK, rpstat); |
3e7abf81 | 2086 | else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) |
2c0a284c | 2087 | cagf = REG_FIELD_GET(HSW_CAGF_MASK, rpstat); |
c816723b | 2088 | else if (GRAPHICS_VER(i915) >= 6) |
2c0a284c | 2089 | cagf = REG_FIELD_GET(GEN6_CAGF_MASK, rpstat); |
e82351e7 | 2090 | else |
2c0a284c | 2091 | cagf = gen5_invert_freq(rps, REG_FIELD_GET(MEMSTAT_PSTATE_MASK, rpstat)); |
3e7abf81 | 2092 | |
e03512ed AS |
2093 | return cagf; |
2094 | } | |
2095 | ||
44df42e6 | 2096 | static u32 __read_cagf(struct intel_rps *rps, bool take_fw) |
e03512ed AS |
2097 | { |
2098 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
e82351e7 | 2099 | struct intel_uncore *uncore = rps_to_uncore(rps); |
44df42e6 | 2100 | i915_reg_t r = INVALID_MMIO_REG; |
e03512ed AS |
2101 | u32 freq; |
2102 | ||
22009b6d BN |
2103 | /* |
2104 | * For Gen12+ reading freq from HW does not need a forcewake and | |
2105 | * registers will return 0 freq when GT is in RC6 | |
2106 | */ | |
2107 | if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70)) { | |
44df42e6 | 2108 | r = MTL_MIRROR_TARGET_WP1; |
22009b6d | 2109 | } else if (GRAPHICS_VER(i915) >= 12) { |
44df42e6 | 2110 | r = GEN12_RPSTAT1; |
01b8c2e6 | 2111 | } else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) { |
e03512ed AS |
2112 | vlv_punit_get(i915); |
2113 | freq = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS); | |
2114 | vlv_punit_put(i915); | |
c816723b | 2115 | } else if (GRAPHICS_VER(i915) >= 6) { |
44df42e6 | 2116 | r = GEN6_RPSTAT1; |
e03512ed | 2117 | } else { |
44df42e6 | 2118 | r = MEMSTAT_ILK; |
e03512ed AS |
2119 | } |
2120 | ||
44df42e6 AD |
2121 | if (i915_mmio_reg_valid(r)) |
2122 | freq = take_fw ? intel_uncore_read(uncore, r) : intel_uncore_read_fw(uncore, r); | |
2123 | ||
e03512ed AS |
2124 | return intel_rps_get_cagf(rps, freq); |
2125 | } | |
2126 | ||
44df42e6 AD |
2127 | static u32 read_cagf(struct intel_rps *rps) |
2128 | { | |
2129 | return __read_cagf(rps, true); | |
2130 | } | |
2131 | ||
e03512ed AS |
2132 | u32 intel_rps_read_actual_frequency(struct intel_rps *rps) |
2133 | { | |
9c878557 | 2134 | struct intel_runtime_pm *rpm = rps_to_uncore(rps)->rpm; |
e03512ed AS |
2135 | intel_wakeref_t wakeref; |
2136 | u32 freq = 0; | |
2137 | ||
2138 | with_intel_runtime_pm_if_in_use(rpm, wakeref) | |
2139 | freq = intel_gpu_freq(rps, read_cagf(rps)); | |
2140 | ||
2141 | return freq; | |
3e7abf81 AS |
2142 | } |
2143 | ||
44df42e6 AD |
2144 | u32 intel_rps_read_actual_frequency_fw(struct intel_rps *rps) |
2145 | { | |
2146 | return intel_gpu_freq(rps, __read_cagf(rps, false)); | |
2147 | } | |
2148 | ||
2149 | static u32 intel_rps_read_punit_req(struct intel_rps *rps) | |
41e5c17e VB |
2150 | { |
2151 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
f25e3908 VB |
2152 | struct intel_runtime_pm *rpm = rps_to_uncore(rps)->rpm; |
2153 | intel_wakeref_t wakeref; | |
2154 | u32 freq = 0; | |
41e5c17e | 2155 | |
f25e3908 VB |
2156 | with_intel_runtime_pm_if_in_use(rpm, wakeref) |
2157 | freq = intel_uncore_read(uncore, GEN6_RPNSWREQ); | |
2158 | ||
2159 | return freq; | |
41e5c17e VB |
2160 | } |
2161 | ||
2162 | static u32 intel_rps_get_req(u32 pureq) | |
2163 | { | |
2164 | u32 req = pureq >> GEN9_SW_REQ_UNSLICE_RATIO_SHIFT; | |
2165 | ||
2166 | return req; | |
2167 | } | |
2168 | ||
2169 | u32 intel_rps_read_punit_req_frequency(struct intel_rps *rps) | |
2170 | { | |
2171 | u32 freq = intel_rps_get_req(intel_rps_read_punit_req(rps)); | |
2172 | ||
2173 | return intel_gpu_freq(rps, freq); | |
2174 | } | |
2175 | ||
2176 | u32 intel_rps_get_requested_frequency(struct intel_rps *rps) | |
2177 | { | |
2178 | if (rps_uses_slpc(rps)) | |
2179 | return intel_rps_read_punit_req_frequency(rps); | |
2180 | else | |
2181 | return intel_gpu_freq(rps, rps->cur_freq); | |
2182 | } | |
2183 | ||
2184 | u32 intel_rps_get_max_frequency(struct intel_rps *rps) | |
2185 | { | |
2186 | struct intel_guc_slpc *slpc = rps_to_slpc(rps); | |
2187 | ||
2188 | if (rps_uses_slpc(rps)) | |
2189 | return slpc->max_freq_softlimit; | |
2190 | else | |
2191 | return intel_gpu_freq(rps, rps->max_freq_softlimit); | |
2192 | } | |
2193 | ||
018a7bdb RV |
2194 | /** |
2195 | * intel_rps_get_max_raw_freq - returns the max frequency in some raw format. | |
2196 | * @rps: the intel_rps structure | |
2197 | * | |
2198 | * Returns the max frequency in a raw format. In newer platforms raw is in | |
2199 | * units of 50 MHz. | |
2200 | */ | |
2201 | u32 intel_rps_get_max_raw_freq(struct intel_rps *rps) | |
2202 | { | |
2203 | struct intel_guc_slpc *slpc = rps_to_slpc(rps); | |
2204 | u32 freq; | |
2205 | ||
2206 | if (rps_uses_slpc(rps)) { | |
2207 | return DIV_ROUND_CLOSEST(slpc->rp0_freq, | |
2208 | GT_FREQUENCY_MULTIPLIER); | |
2209 | } else { | |
2210 | freq = rps->max_freq; | |
2211 | if (GRAPHICS_VER(rps_to_i915(rps)) >= 9) { | |
2212 | /* Convert GT frequency to 50 MHz units */ | |
2213 | freq /= GEN9_FREQ_SCALER; | |
2214 | } | |
2215 | return freq; | |
2216 | } | |
2217 | } | |
2218 | ||
41e5c17e VB |
2219 | u32 intel_rps_get_rp0_frequency(struct intel_rps *rps) |
2220 | { | |
2221 | struct intel_guc_slpc *slpc = rps_to_slpc(rps); | |
2222 | ||
2223 | if (rps_uses_slpc(rps)) | |
2224 | return slpc->rp0_freq; | |
2225 | else | |
2226 | return intel_gpu_freq(rps, rps->rp0_freq); | |
2227 | } | |
2228 | ||
2229 | u32 intel_rps_get_rp1_frequency(struct intel_rps *rps) | |
2230 | { | |
2231 | struct intel_guc_slpc *slpc = rps_to_slpc(rps); | |
2232 | ||
2233 | if (rps_uses_slpc(rps)) | |
2234 | return slpc->rp1_freq; | |
2235 | else | |
2236 | return intel_gpu_freq(rps, rps->rp1_freq); | |
2237 | } | |
2238 | ||
2239 | u32 intel_rps_get_rpn_frequency(struct intel_rps *rps) | |
2240 | { | |
2241 | struct intel_guc_slpc *slpc = rps_to_slpc(rps); | |
2242 | ||
2243 | if (rps_uses_slpc(rps)) | |
2244 | return slpc->min_freq; | |
2245 | else | |
2246 | return intel_gpu_freq(rps, rps->min_freq); | |
2247 | } | |
2248 | ||
83d495a5 | 2249 | static void rps_frequency_dump(struct intel_rps *rps, struct drm_printer *p) |
cf51cc7b VB |
2250 | { |
2251 | struct intel_gt *gt = rps_to_gt(rps); | |
2252 | struct drm_i915_private *i915 = gt->i915; | |
2253 | struct intel_uncore *uncore = gt->uncore; | |
2254 | struct intel_rps_freq_caps caps; | |
2255 | u32 rp_state_limits; | |
2256 | u32 gt_perf_status; | |
2257 | u32 rpmodectl, rpinclimit, rpdeclimit; | |
2258 | u32 rpstat, cagf, reqf; | |
2259 | u32 rpcurupei, rpcurup, rpprevup; | |
2260 | u32 rpcurdownei, rpcurdown, rpprevdown; | |
2261 | u32 rpupei, rpupt, rpdownei, rpdownt; | |
2262 | u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask; | |
2263 | ||
2264 | rp_state_limits = intel_uncore_read(uncore, GEN6_RP_STATE_LIMITS); | |
2265 | gen6_rps_get_freq_caps(rps, &caps); | |
2266 | if (IS_GEN9_LP(i915)) | |
2267 | gt_perf_status = intel_uncore_read(uncore, BXT_GT_PERF_STATUS); | |
2268 | else | |
2269 | gt_perf_status = intel_uncore_read(uncore, GEN6_GT_PERF_STATUS); | |
2270 | ||
2271 | /* RPSTAT1 is in the GT power well */ | |
2272 | intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL); | |
2273 | ||
2274 | reqf = intel_uncore_read(uncore, GEN6_RPNSWREQ); | |
2275 | if (GRAPHICS_VER(i915) >= 9) { | |
2276 | reqf >>= 23; | |
2277 | } else { | |
2278 | reqf &= ~GEN6_TURBO_DISABLE; | |
2279 | if (IS_HASWELL(i915) || IS_BROADWELL(i915)) | |
2280 | reqf >>= 24; | |
2281 | else | |
2282 | reqf >>= 25; | |
2283 | } | |
2284 | reqf = intel_gpu_freq(rps, reqf); | |
2285 | ||
2286 | rpmodectl = intel_uncore_read(uncore, GEN6_RP_CONTROL); | |
2287 | rpinclimit = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD); | |
2288 | rpdeclimit = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD); | |
2289 | ||
01b8c2e6 | 2290 | rpstat = intel_rps_read_rpstat(rps); |
cf51cc7b VB |
2291 | rpcurupei = intel_uncore_read(uncore, GEN6_RP_CUR_UP_EI) & GEN6_CURICONT_MASK; |
2292 | rpcurup = intel_uncore_read(uncore, GEN6_RP_CUR_UP) & GEN6_CURBSYTAVG_MASK; | |
2293 | rpprevup = intel_uncore_read(uncore, GEN6_RP_PREV_UP) & GEN6_CURBSYTAVG_MASK; | |
2294 | rpcurdownei = intel_uncore_read(uncore, GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK; | |
2295 | rpcurdown = intel_uncore_read(uncore, GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK; | |
2296 | rpprevdown = intel_uncore_read(uncore, GEN6_RP_PREV_DOWN) & GEN6_CURBSYTAVG_MASK; | |
2297 | ||
2298 | rpupei = intel_uncore_read(uncore, GEN6_RP_UP_EI); | |
2299 | rpupt = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD); | |
2300 | ||
2301 | rpdownei = intel_uncore_read(uncore, GEN6_RP_DOWN_EI); | |
2302 | rpdownt = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD); | |
2303 | ||
2304 | cagf = intel_rps_read_actual_frequency(rps); | |
2305 | ||
2306 | intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL); | |
2307 | ||
2308 | if (GRAPHICS_VER(i915) >= 11) { | |
2309 | pm_ier = intel_uncore_read(uncore, GEN11_GPM_WGBOXPERF_INTR_ENABLE); | |
2310 | pm_imr = intel_uncore_read(uncore, GEN11_GPM_WGBOXPERF_INTR_MASK); | |
2311 | /* | |
2312 | * The equivalent to the PM ISR & IIR cannot be read | |
2313 | * without affecting the current state of the system | |
2314 | */ | |
2315 | pm_isr = 0; | |
2316 | pm_iir = 0; | |
2317 | } else if (GRAPHICS_VER(i915) >= 8) { | |
2318 | pm_ier = intel_uncore_read(uncore, GEN8_GT_IER(2)); | |
2319 | pm_imr = intel_uncore_read(uncore, GEN8_GT_IMR(2)); | |
2320 | pm_isr = intel_uncore_read(uncore, GEN8_GT_ISR(2)); | |
2321 | pm_iir = intel_uncore_read(uncore, GEN8_GT_IIR(2)); | |
2322 | } else { | |
2323 | pm_ier = intel_uncore_read(uncore, GEN6_PMIER); | |
2324 | pm_imr = intel_uncore_read(uncore, GEN6_PMIMR); | |
2325 | pm_isr = intel_uncore_read(uncore, GEN6_PMISR); | |
2326 | pm_iir = intel_uncore_read(uncore, GEN6_PMIIR); | |
2327 | } | |
2328 | pm_mask = intel_uncore_read(uncore, GEN6_PMINTRMSK); | |
2329 | ||
2330 | drm_printf(p, "Video Turbo Mode: %s\n", | |
2331 | str_yes_no(rpmodectl & GEN6_RP_MEDIA_TURBO)); | |
2332 | drm_printf(p, "HW control enabled: %s\n", | |
2333 | str_yes_no(rpmodectl & GEN6_RP_ENABLE)); | |
2334 | drm_printf(p, "SW control enabled: %s\n", | |
2335 | str_yes_no((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) == GEN6_RP_MEDIA_SW_MODE)); | |
2336 | ||
2337 | drm_printf(p, "PM IER=0x%08x IMR=0x%08x, MASK=0x%08x\n", | |
2338 | pm_ier, pm_imr, pm_mask); | |
2339 | if (GRAPHICS_VER(i915) <= 10) | |
2340 | drm_printf(p, "PM ISR=0x%08x IIR=0x%08x\n", | |
2341 | pm_isr, pm_iir); | |
2342 | drm_printf(p, "pm_intrmsk_mbz: 0x%08x\n", | |
2343 | rps->pm_intrmsk_mbz); | |
2344 | drm_printf(p, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status); | |
2345 | drm_printf(p, "Render p-state ratio: %d\n", | |
2346 | (gt_perf_status & (GRAPHICS_VER(i915) >= 9 ? 0x1ff00 : 0xff00)) >> 8); | |
2347 | drm_printf(p, "Render p-state VID: %d\n", | |
2348 | gt_perf_status & 0xff); | |
2349 | drm_printf(p, "Render p-state limit: %d\n", | |
2350 | rp_state_limits & 0xff); | |
2351 | drm_printf(p, "RPSTAT1: 0x%08x\n", rpstat); | |
2352 | drm_printf(p, "RPMODECTL: 0x%08x\n", rpmodectl); | |
2353 | drm_printf(p, "RPINCLIMIT: 0x%08x\n", rpinclimit); | |
2354 | drm_printf(p, "RPDECLIMIT: 0x%08x\n", rpdeclimit); | |
2355 | drm_printf(p, "RPNSWREQ: %dMHz\n", reqf); | |
2356 | drm_printf(p, "CAGF: %dMHz\n", cagf); | |
2357 | drm_printf(p, "RP CUR UP EI: %d (%lldns)\n", | |
2358 | rpcurupei, | |
2359 | intel_gt_pm_interval_to_ns(gt, rpcurupei)); | |
2360 | drm_printf(p, "RP CUR UP: %d (%lldns)\n", | |
2361 | rpcurup, intel_gt_pm_interval_to_ns(gt, rpcurup)); | |
2362 | drm_printf(p, "RP PREV UP: %d (%lldns)\n", | |
2363 | rpprevup, intel_gt_pm_interval_to_ns(gt, rpprevup)); | |
2364 | drm_printf(p, "Up threshold: %d%%\n", | |
2365 | rps->power.up_threshold); | |
2366 | drm_printf(p, "RP UP EI: %d (%lldns)\n", | |
2367 | rpupei, intel_gt_pm_interval_to_ns(gt, rpupei)); | |
2368 | drm_printf(p, "RP UP THRESHOLD: %d (%lldns)\n", | |
2369 | rpupt, intel_gt_pm_interval_to_ns(gt, rpupt)); | |
2370 | ||
2371 | drm_printf(p, "RP CUR DOWN EI: %d (%lldns)\n", | |
2372 | rpcurdownei, | |
2373 | intel_gt_pm_interval_to_ns(gt, rpcurdownei)); | |
2374 | drm_printf(p, "RP CUR DOWN: %d (%lldns)\n", | |
2375 | rpcurdown, | |
2376 | intel_gt_pm_interval_to_ns(gt, rpcurdown)); | |
2377 | drm_printf(p, "RP PREV DOWN: %d (%lldns)\n", | |
2378 | rpprevdown, | |
2379 | intel_gt_pm_interval_to_ns(gt, rpprevdown)); | |
2380 | drm_printf(p, "Down threshold: %d%%\n", | |
2381 | rps->power.down_threshold); | |
2382 | drm_printf(p, "RP DOWN EI: %d (%lldns)\n", | |
2383 | rpdownei, intel_gt_pm_interval_to_ns(gt, rpdownei)); | |
2384 | drm_printf(p, "RP DOWN THRESHOLD: %d (%lldns)\n", | |
2385 | rpdownt, intel_gt_pm_interval_to_ns(gt, rpdownt)); | |
2386 | ||
2387 | drm_printf(p, "Lowest (RPN) frequency: %dMHz\n", | |
2388 | intel_gpu_freq(rps, caps.min_freq)); | |
2389 | drm_printf(p, "Nominal (RP1) frequency: %dMHz\n", | |
2390 | intel_gpu_freq(rps, caps.rp1_freq)); | |
2391 | drm_printf(p, "Max non-overclocked (RP0) frequency: %dMHz\n", | |
2392 | intel_gpu_freq(rps, caps.rp0_freq)); | |
2393 | drm_printf(p, "Max overclocked frequency: %dMHz\n", | |
2394 | intel_gpu_freq(rps, rps->max_freq)); | |
2395 | ||
2396 | drm_printf(p, "Current freq: %d MHz\n", | |
2397 | intel_gpu_freq(rps, rps->cur_freq)); | |
2398 | drm_printf(p, "Actual freq: %d MHz\n", cagf); | |
2399 | drm_printf(p, "Idle freq: %d MHz\n", | |
2400 | intel_gpu_freq(rps, rps->idle_freq)); | |
2401 | drm_printf(p, "Min freq: %d MHz\n", | |
2402 | intel_gpu_freq(rps, rps->min_freq)); | |
2403 | drm_printf(p, "Boost freq: %d MHz\n", | |
2404 | intel_gpu_freq(rps, rps->boost_freq)); | |
2405 | drm_printf(p, "Max freq: %d MHz\n", | |
2406 | intel_gpu_freq(rps, rps->max_freq)); | |
2407 | drm_printf(p, | |
2408 | "efficient (RPe) frequency: %d MHz\n", | |
2409 | intel_gpu_freq(rps, rps->efficient_freq)); | |
2410 | } | |
2411 | ||
83d495a5 VB |
2412 | static void slpc_frequency_dump(struct intel_rps *rps, struct drm_printer *p) |
2413 | { | |
2414 | struct intel_gt *gt = rps_to_gt(rps); | |
2415 | struct intel_uncore *uncore = gt->uncore; | |
2416 | struct intel_rps_freq_caps caps; | |
2417 | u32 pm_mask; | |
2418 | ||
2419 | gen6_rps_get_freq_caps(rps, &caps); | |
2420 | pm_mask = intel_uncore_read(uncore, GEN6_PMINTRMSK); | |
2421 | ||
2422 | drm_printf(p, "PM MASK=0x%08x\n", pm_mask); | |
2423 | drm_printf(p, "pm_intrmsk_mbz: 0x%08x\n", | |
2424 | rps->pm_intrmsk_mbz); | |
01b8c2e6 | 2425 | drm_printf(p, "RPSTAT1: 0x%08x\n", intel_rps_read_rpstat(rps)); |
83d495a5 VB |
2426 | drm_printf(p, "RPNSWREQ: %dMHz\n", intel_rps_get_requested_frequency(rps)); |
2427 | drm_printf(p, "Lowest (RPN) frequency: %dMHz\n", | |
2428 | intel_gpu_freq(rps, caps.min_freq)); | |
2429 | drm_printf(p, "Nominal (RP1) frequency: %dMHz\n", | |
2430 | intel_gpu_freq(rps, caps.rp1_freq)); | |
2431 | drm_printf(p, "Max non-overclocked (RP0) frequency: %dMHz\n", | |
2432 | intel_gpu_freq(rps, caps.rp0_freq)); | |
2433 | drm_printf(p, "Current freq: %d MHz\n", | |
2434 | intel_rps_get_requested_frequency(rps)); | |
2435 | drm_printf(p, "Actual freq: %d MHz\n", | |
2436 | intel_rps_read_actual_frequency(rps)); | |
2437 | drm_printf(p, "Min freq: %d MHz\n", | |
2438 | intel_rps_get_min_frequency(rps)); | |
2439 | drm_printf(p, "Boost freq: %d MHz\n", | |
2440 | intel_rps_get_boost_frequency(rps)); | |
2441 | drm_printf(p, "Max freq: %d MHz\n", | |
2442 | intel_rps_get_max_frequency(rps)); | |
2443 | drm_printf(p, | |
2444 | "efficient (RPe) frequency: %d MHz\n", | |
2445 | intel_gpu_freq(rps, caps.rp1_freq)); | |
2446 | } | |
2447 | ||
2448 | void gen6_rps_frequency_dump(struct intel_rps *rps, struct drm_printer *p) | |
2449 | { | |
2450 | if (rps_uses_slpc(rps)) | |
2451 | return slpc_frequency_dump(rps, p); | |
2452 | else | |
2453 | return rps_frequency_dump(rps, p); | |
2454 | } | |
2455 | ||
41e5c17e VB |
2456 | static int set_max_freq(struct intel_rps *rps, u32 val) |
2457 | { | |
2458 | struct drm_i915_private *i915 = rps_to_i915(rps); | |
2459 | int ret = 0; | |
2460 | ||
2461 | mutex_lock(&rps->lock); | |
2462 | ||
2463 | val = intel_freq_opcode(rps, val); | |
2464 | if (val < rps->min_freq || | |
2465 | val > rps->max_freq || | |
2466 | val < rps->min_freq_softlimit) { | |
2467 | ret = -EINVAL; | |
2468 | goto unlock; | |
2469 | } | |
2470 | ||
2471 | if (val > rps->rp0_freq) | |
2472 | drm_dbg(&i915->drm, "User requested overclocking to %d\n", | |
2473 | intel_gpu_freq(rps, val)); | |
2474 | ||
2475 | rps->max_freq_softlimit = val; | |
2476 | ||
2477 | val = clamp_t(int, rps->cur_freq, | |
2478 | rps->min_freq_softlimit, | |
2479 | rps->max_freq_softlimit); | |
2480 | ||
2481 | /* | |
2482 | * We still need *_set_rps to process the new max_delay and | |
2483 | * update the interrupt limits and PMINTRMSK even though | |
2484 | * frequency request may be unchanged. | |
2485 | */ | |
2486 | intel_rps_set(rps, val); | |
2487 | ||
2488 | unlock: | |
2489 | mutex_unlock(&rps->lock); | |
2490 | ||
2491 | return ret; | |
2492 | } | |
2493 | ||
2494 | int intel_rps_set_max_frequency(struct intel_rps *rps, u32 val) | |
2495 | { | |
2496 | struct intel_guc_slpc *slpc = rps_to_slpc(rps); | |
2497 | ||
2498 | if (rps_uses_slpc(rps)) | |
2499 | return intel_guc_slpc_set_max_freq(slpc, val); | |
2500 | else | |
2501 | return set_max_freq(rps, val); | |
2502 | } | |
2503 | ||
2504 | u32 intel_rps_get_min_frequency(struct intel_rps *rps) | |
2505 | { | |
2506 | struct intel_guc_slpc *slpc = rps_to_slpc(rps); | |
2507 | ||
2508 | if (rps_uses_slpc(rps)) | |
2509 | return slpc->min_freq_softlimit; | |
2510 | else | |
2511 | return intel_gpu_freq(rps, rps->min_freq_softlimit); | |
2512 | } | |
2513 | ||
018a7bdb RV |
2514 | /** |
2515 | * intel_rps_get_min_raw_freq - returns the min frequency in some raw format. | |
2516 | * @rps: the intel_rps structure | |
2517 | * | |
2518 | * Returns the min frequency in a raw format. In newer platforms raw is in | |
2519 | * units of 50 MHz. | |
2520 | */ | |
2521 | u32 intel_rps_get_min_raw_freq(struct intel_rps *rps) | |
2522 | { | |
2523 | struct intel_guc_slpc *slpc = rps_to_slpc(rps); | |
2524 | u32 freq; | |
2525 | ||
2526 | if (rps_uses_slpc(rps)) { | |
2527 | return DIV_ROUND_CLOSEST(slpc->min_freq, | |
2528 | GT_FREQUENCY_MULTIPLIER); | |
2529 | } else { | |
2530 | freq = rps->min_freq; | |
2531 | if (GRAPHICS_VER(rps_to_i915(rps)) >= 9) { | |
2532 | /* Convert GT frequency to 50 MHz units */ | |
2533 | freq /= GEN9_FREQ_SCALER; | |
2534 | } | |
2535 | return freq; | |
2536 | } | |
2537 | } | |
2538 | ||
41e5c17e VB |
2539 | static int set_min_freq(struct intel_rps *rps, u32 val) |
2540 | { | |
2541 | int ret = 0; | |
2542 | ||
2543 | mutex_lock(&rps->lock); | |
2544 | ||
2545 | val = intel_freq_opcode(rps, val); | |
2546 | if (val < rps->min_freq || | |
2547 | val > rps->max_freq || | |
2548 | val > rps->max_freq_softlimit) { | |
2549 | ret = -EINVAL; | |
2550 | goto unlock; | |
2551 | } | |
2552 | ||
2553 | rps->min_freq_softlimit = val; | |
2554 | ||
2555 | val = clamp_t(int, rps->cur_freq, | |
2556 | rps->min_freq_softlimit, | |
2557 | rps->max_freq_softlimit); | |
2558 | ||
2559 | /* | |
2560 | * We still need *_set_rps to process the new min_delay and | |
2561 | * update the interrupt limits and PMINTRMSK even though | |
2562 | * frequency request may be unchanged. | |
2563 | */ | |
2564 | intel_rps_set(rps, val); | |
2565 | ||
2566 | unlock: | |
2567 | mutex_unlock(&rps->lock); | |
2568 | ||
2569 | return ret; | |
2570 | } | |
2571 | ||
2572 | int intel_rps_set_min_frequency(struct intel_rps *rps, u32 val) | |
2573 | { | |
2574 | struct intel_guc_slpc *slpc = rps_to_slpc(rps); | |
2575 | ||
2576 | if (rps_uses_slpc(rps)) | |
2577 | return intel_guc_slpc_set_min_freq(slpc, val); | |
2578 | else | |
2579 | return set_min_freq(rps, val); | |
2580 | } | |
2581 | ||
c1be6162 TU |
2582 | u8 intel_rps_get_up_threshold(struct intel_rps *rps) |
2583 | { | |
2584 | return rps->power.up_threshold; | |
2585 | } | |
2586 | ||
2587 | static int rps_set_threshold(struct intel_rps *rps, u8 *threshold, u8 val) | |
2588 | { | |
2589 | int ret; | |
2590 | ||
2591 | if (val > 100) | |
2592 | return -EINVAL; | |
2593 | ||
2594 | ret = mutex_lock_interruptible(&rps->lock); | |
2595 | if (ret) | |
2596 | return ret; | |
2597 | ||
2598 | if (*threshold == val) | |
2599 | goto out_unlock; | |
2600 | ||
2601 | *threshold = val; | |
2602 | ||
2603 | /* Force reset. */ | |
2604 | rps->last_freq = -1; | |
2605 | mutex_lock(&rps->power.mutex); | |
2606 | rps->power.mode = -1; | |
2607 | mutex_unlock(&rps->power.mutex); | |
2608 | ||
2609 | intel_rps_set(rps, clamp(rps->cur_freq, | |
2610 | rps->min_freq_softlimit, | |
2611 | rps->max_freq_softlimit)); | |
2612 | ||
2613 | out_unlock: | |
2614 | mutex_unlock(&rps->lock); | |
2615 | ||
2616 | return ret; | |
2617 | } | |
2618 | ||
2619 | int intel_rps_set_up_threshold(struct intel_rps *rps, u8 threshold) | |
2620 | { | |
2621 | return rps_set_threshold(rps, &rps->power.up_threshold, threshold); | |
2622 | } | |
2623 | ||
2624 | u8 intel_rps_get_down_threshold(struct intel_rps *rps) | |
2625 | { | |
2626 | return rps->power.down_threshold; | |
2627 | } | |
2628 | ||
2629 | int intel_rps_set_down_threshold(struct intel_rps *rps, u8 threshold) | |
2630 | { | |
2631 | return rps_set_threshold(rps, &rps->power.down_threshold, threshold); | |
2632 | } | |
2633 | ||
1c40d40f VB |
2634 | static void intel_rps_set_manual(struct intel_rps *rps, bool enable) |
2635 | { | |
2636 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
2637 | u32 state = enable ? GEN9_RPSWCTL_ENABLE : GEN9_RPSWCTL_DISABLE; | |
2638 | ||
2639 | /* Allow punit to process software requests */ | |
2640 | intel_uncore_write(uncore, GEN6_RP_CONTROL, state); | |
2641 | } | |
2642 | ||
2643 | void intel_rps_raise_unslice(struct intel_rps *rps) | |
2644 | { | |
2645 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
1c40d40f VB |
2646 | |
2647 | mutex_lock(&rps->lock); | |
2648 | ||
2649 | if (rps_uses_slpc(rps)) { | |
2650 | /* RP limits have not been initialized yet for SLPC path */ | |
56758cc4 AD |
2651 | struct intel_rps_freq_caps caps; |
2652 | ||
2653 | gen6_rps_get_freq_caps(rps, &caps); | |
1c40d40f VB |
2654 | |
2655 | intel_rps_set_manual(rps, true); | |
2656 | intel_uncore_write(uncore, GEN6_RPNSWREQ, | |
56758cc4 | 2657 | ((caps.rp0_freq << |
1c40d40f VB |
2658 | GEN9_SW_REQ_UNSLICE_RATIO_SHIFT) | |
2659 | GEN9_IGNORE_SLICE_RATIO)); | |
2660 | intel_rps_set_manual(rps, false); | |
2661 | } else { | |
2662 | intel_rps_set(rps, rps->rp0_freq); | |
2663 | } | |
2664 | ||
2665 | mutex_unlock(&rps->lock); | |
2666 | } | |
2667 | ||
2668 | void intel_rps_lower_unslice(struct intel_rps *rps) | |
2669 | { | |
2670 | struct intel_uncore *uncore = rps_to_uncore(rps); | |
1c40d40f VB |
2671 | |
2672 | mutex_lock(&rps->lock); | |
2673 | ||
2674 | if (rps_uses_slpc(rps)) { | |
2675 | /* RP limits have not been initialized yet for SLPC path */ | |
56758cc4 AD |
2676 | struct intel_rps_freq_caps caps; |
2677 | ||
2678 | gen6_rps_get_freq_caps(rps, &caps); | |
1c40d40f VB |
2679 | |
2680 | intel_rps_set_manual(rps, true); | |
2681 | intel_uncore_write(uncore, GEN6_RPNSWREQ, | |
56758cc4 | 2682 | ((caps.min_freq << |
1c40d40f VB |
2683 | GEN9_SW_REQ_UNSLICE_RATIO_SHIFT) | |
2684 | GEN9_IGNORE_SLICE_RATIO)); | |
2685 | intel_rps_set_manual(rps, false); | |
2686 | } else { | |
2687 | intel_rps_set(rps, rps->min_freq); | |
2688 | } | |
2689 | ||
2690 | mutex_unlock(&rps->lock); | |
2691 | } | |
2692 | ||
fa68bff7 SS |
2693 | static u32 rps_read_mmio(struct intel_rps *rps, i915_reg_t reg32) |
2694 | { | |
2695 | struct intel_gt *gt = rps_to_gt(rps); | |
2696 | intel_wakeref_t wakeref; | |
2697 | u32 val; | |
2698 | ||
2699 | with_intel_runtime_pm(gt->uncore->rpm, wakeref) | |
2700 | val = intel_uncore_read(gt->uncore, reg32); | |
2701 | ||
2702 | return val; | |
2703 | } | |
2704 | ||
2705 | bool rps_read_mask_mmio(struct intel_rps *rps, | |
2706 | i915_reg_t reg32, u32 mask) | |
2707 | { | |
2708 | return rps_read_mmio(rps, reg32) & mask; | |
2709 | } | |
2710 | ||
3e7abf81 AS |
2711 | /* External interface for intel_ips.ko */ |
2712 | ||
2713 | static struct drm_i915_private __rcu *ips_mchdev; | |
2714 | ||
445a1b81 | 2715 | /* |
3e7abf81 AS |
2716 | * Tells the intel_ips driver that the i915 driver is now loaded, if |
2717 | * IPS got loaded first. | |
2718 | * | |
2719 | * This awkward dance is so that neither module has to depend on the | |
2720 | * other in order for IPS to do the appropriate communication of | |
2721 | * GPU turbo limits to i915. | |
2722 | */ | |
2723 | static void | |
2724 | ips_ping_for_i915_load(void) | |
2725 | { | |
2726 | void (*link)(void); | |
2727 | ||
2728 | link = symbol_get(ips_link_to_i915_driver); | |
2729 | if (link) { | |
2730 | link(); | |
2731 | symbol_put(ips_link_to_i915_driver); | |
2732 | } | |
2733 | } | |
2734 | ||
2735 | void intel_rps_driver_register(struct intel_rps *rps) | |
2736 | { | |
2737 | struct intel_gt *gt = rps_to_gt(rps); | |
2738 | ||
2739 | /* | |
2740 | * We only register the i915 ips part with intel-ips once everything is | |
2741 | * set up, to avoid intel-ips sneaking in and reading bogus values. | |
2742 | */ | |
c816723b | 2743 | if (GRAPHICS_VER(gt->i915) == 5) { |
c0168a3e | 2744 | GEM_BUG_ON(ips_mchdev); |
3e7abf81 AS |
2745 | rcu_assign_pointer(ips_mchdev, gt->i915); |
2746 | ips_ping_for_i915_load(); | |
2747 | } | |
2748 | } | |
2749 | ||
2750 | void intel_rps_driver_unregister(struct intel_rps *rps) | |
2751 | { | |
ad3662e2 | 2752 | if (rcu_access_pointer(ips_mchdev) == rps_to_i915(rps)) |
c0168a3e | 2753 | rcu_assign_pointer(ips_mchdev, NULL); |
3e7abf81 AS |
2754 | } |
2755 | ||
2756 | static struct drm_i915_private *mchdev_get(void) | |
2757 | { | |
2758 | struct drm_i915_private *i915; | |
2759 | ||
2760 | rcu_read_lock(); | |
2761 | i915 = rcu_dereference(ips_mchdev); | |
6cb304b3 | 2762 | if (i915 && !kref_get_unless_zero(&i915->drm.ref)) |
3e7abf81 AS |
2763 | i915 = NULL; |
2764 | rcu_read_unlock(); | |
2765 | ||
2766 | return i915; | |
2767 | } | |
2768 | ||
2769 | /** | |
2770 | * i915_read_mch_val - return value for IPS use | |
2771 | * | |
2772 | * Calculate and return a value for the IPS driver to use when deciding whether | |
2773 | * we have thermal and power headroom to increase CPU or GPU power budget. | |
2774 | */ | |
2775 | unsigned long i915_read_mch_val(void) | |
2776 | { | |
2777 | struct drm_i915_private *i915; | |
2778 | unsigned long chipset_val = 0; | |
2779 | unsigned long graphics_val = 0; | |
2780 | intel_wakeref_t wakeref; | |
2781 | ||
2782 | i915 = mchdev_get(); | |
2783 | if (!i915) | |
2784 | return 0; | |
2785 | ||
2786 | with_intel_runtime_pm(&i915->runtime_pm, wakeref) { | |
c14adcbd | 2787 | struct intel_ips *ips = &to_gt(i915)->rps.ips; |
3e7abf81 AS |
2788 | |
2789 | spin_lock_irq(&mchdev_lock); | |
2790 | chipset_val = __ips_chipset_val(ips); | |
2791 | graphics_val = __ips_gfx_val(ips); | |
2792 | spin_unlock_irq(&mchdev_lock); | |
2793 | } | |
2794 | ||
2795 | drm_dev_put(&i915->drm); | |
2796 | return chipset_val + graphics_val; | |
2797 | } | |
2798 | EXPORT_SYMBOL_GPL(i915_read_mch_val); | |
2799 | ||
2800 | /** | |
2801 | * i915_gpu_raise - raise GPU frequency limit | |
2802 | * | |
2803 | * Raise the limit; IPS indicates we have thermal headroom. | |
2804 | */ | |
2805 | bool i915_gpu_raise(void) | |
2806 | { | |
2807 | struct drm_i915_private *i915; | |
2808 | struct intel_rps *rps; | |
2809 | ||
2810 | i915 = mchdev_get(); | |
2811 | if (!i915) | |
2812 | return false; | |
2813 | ||
c14adcbd | 2814 | rps = &to_gt(i915)->rps; |
3e7abf81 AS |
2815 | |
2816 | spin_lock_irq(&mchdev_lock); | |
2817 | if (rps->max_freq_softlimit < rps->max_freq) | |
2818 | rps->max_freq_softlimit++; | |
2819 | spin_unlock_irq(&mchdev_lock); | |
2820 | ||
2821 | drm_dev_put(&i915->drm); | |
2822 | return true; | |
2823 | } | |
2824 | EXPORT_SYMBOL_GPL(i915_gpu_raise); | |
2825 | ||
2826 | /** | |
2827 | * i915_gpu_lower - lower GPU frequency limit | |
2828 | * | |
2829 | * IPS indicates we're close to a thermal limit, so throttle back the GPU | |
2830 | * frequency maximum. | |
2831 | */ | |
2832 | bool i915_gpu_lower(void) | |
2833 | { | |
2834 | struct drm_i915_private *i915; | |
2835 | struct intel_rps *rps; | |
2836 | ||
2837 | i915 = mchdev_get(); | |
2838 | if (!i915) | |
2839 | return false; | |
2840 | ||
c14adcbd | 2841 | rps = &to_gt(i915)->rps; |
3e7abf81 AS |
2842 | |
2843 | spin_lock_irq(&mchdev_lock); | |
2844 | if (rps->max_freq_softlimit > rps->min_freq) | |
2845 | rps->max_freq_softlimit--; | |
2846 | spin_unlock_irq(&mchdev_lock); | |
2847 | ||
2848 | drm_dev_put(&i915->drm); | |
2849 | return true; | |
2850 | } | |
2851 | EXPORT_SYMBOL_GPL(i915_gpu_lower); | |
2852 | ||
2853 | /** | |
2854 | * i915_gpu_busy - indicate GPU business to IPS | |
2855 | * | |
2856 | * Tell the IPS driver whether or not the GPU is busy. | |
2857 | */ | |
2858 | bool i915_gpu_busy(void) | |
2859 | { | |
2860 | struct drm_i915_private *i915; | |
2861 | bool ret; | |
2862 | ||
2863 | i915 = mchdev_get(); | |
2864 | if (!i915) | |
2865 | return false; | |
2866 | ||
c14adcbd | 2867 | ret = to_gt(i915)->awake; |
3e7abf81 AS |
2868 | |
2869 | drm_dev_put(&i915->drm); | |
2870 | return ret; | |
2871 | } | |
2872 | EXPORT_SYMBOL_GPL(i915_gpu_busy); | |
2873 | ||
2874 | /** | |
2875 | * i915_gpu_turbo_disable - disable graphics turbo | |
2876 | * | |
2877 | * Disable graphics turbo by resetting the max frequency and setting the | |
2878 | * current frequency to the default. | |
2879 | */ | |
2880 | bool i915_gpu_turbo_disable(void) | |
2881 | { | |
2882 | struct drm_i915_private *i915; | |
2883 | struct intel_rps *rps; | |
2884 | bool ret; | |
2885 | ||
2886 | i915 = mchdev_get(); | |
2887 | if (!i915) | |
2888 | return false; | |
2889 | ||
c14adcbd | 2890 | rps = &to_gt(i915)->rps; |
3e7abf81 AS |
2891 | |
2892 | spin_lock_irq(&mchdev_lock); | |
2893 | rps->max_freq_softlimit = rps->min_freq; | |
c14adcbd | 2894 | ret = !__gen5_rps_set(&to_gt(i915)->rps, rps->min_freq); |
3e7abf81 AS |
2895 | spin_unlock_irq(&mchdev_lock); |
2896 | ||
2897 | drm_dev_put(&i915->drm); | |
2898 | return ret; | |
2899 | } | |
2900 | EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable); | |
46495adc CW |
2901 | |
2902 | #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) | |
2903 | #include "selftest_rps.c" | |
8ee2c227 | 2904 | #include "selftest_slpc.c" |
46495adc | 2905 | #endif |