1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2017-2019 The Linux Foundation. All rights reserved. */
3
4 #include <linux/clk.h>
5 #include <linux/interconnect.h>
6 #include <linux/pm_domain.h>
7 #include <linux/pm_opp.h>
8 #include <soc/qcom/cmd-db.h>
9 #include <drm/drm_gem.h>
10
11 #include "a6xx_gpu.h"
12 #include "a6xx_gmu.xml.h"
13 #include "msm_gem.h"
14 #include "msm_gpu_trace.h"
15 #include "msm_mmu.h"
16
a6xx_gmu_fault(struct a6xx_gmu * gmu)17 static void a6xx_gmu_fault(struct a6xx_gmu *gmu)
18 {
19 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
20 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
21 struct msm_gpu *gpu = &adreno_gpu->base;
22
23 /* FIXME: add a banner here */
24 gmu->hung = true;
25
26 /* Turn off the hangcheck timer while we are resetting */
27 del_timer(&gpu->hangcheck_timer);
28
29 /* Queue the GPU handler because we need to treat this as a recovery */
30 kthread_queue_work(gpu->worker, &gpu->recover_work);
31 }
32
a6xx_gmu_irq(int irq,void * data)33 static irqreturn_t a6xx_gmu_irq(int irq, void *data)
34 {
35 struct a6xx_gmu *gmu = data;
36 u32 status;
37
38 status = gmu_read(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_STATUS);
39 gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, status);
40
41 if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_WDOG_BITE) {
42 dev_err_ratelimited(gmu->dev, "GMU watchdog expired\n");
43
44 a6xx_gmu_fault(gmu);
45 }
46
47 if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_HOST_AHB_BUS_ERROR)
48 dev_err_ratelimited(gmu->dev, "GMU AHB bus error\n");
49
50 if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_FENCE_ERR)
51 dev_err_ratelimited(gmu->dev, "GMU fence error: 0x%x\n",
52 gmu_read(gmu, REG_A6XX_GMU_AHB_FENCE_STATUS));
53
54 return IRQ_HANDLED;
55 }
56
a6xx_hfi_irq(int irq,void * data)57 static irqreturn_t a6xx_hfi_irq(int irq, void *data)
58 {
59 struct a6xx_gmu *gmu = data;
60 u32 status;
61
62 status = gmu_read(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO);
63 gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, status);
64
65 if (status & A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT) {
66 dev_err_ratelimited(gmu->dev, "GMU firmware fault\n");
67
68 a6xx_gmu_fault(gmu);
69 }
70
71 return IRQ_HANDLED;
72 }
73
a6xx_gmu_sptprac_is_on(struct a6xx_gmu * gmu)74 bool a6xx_gmu_sptprac_is_on(struct a6xx_gmu *gmu)
75 {
76 u32 val;
77
78 /* This can be called from gpu state code so make sure GMU is valid */
79 if (!gmu->initialized)
80 return false;
81
82 val = gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS);
83
84 return !(val &
85 (A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_SPTPRAC_GDSC_POWER_OFF |
86 A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_SP_CLOCK_OFF));
87 }
88
89 /* Check to see if the GX rail is still powered */
a6xx_gmu_gx_is_on(struct a6xx_gmu * gmu)90 bool a6xx_gmu_gx_is_on(struct a6xx_gmu *gmu)
91 {
92 u32 val;
93
94 /* This can be called from gpu state code so make sure GMU is valid */
95 if (!gmu->initialized)
96 return false;
97
98 val = gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS);
99
100 return !(val &
101 (A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_GDSC_POWER_OFF |
102 A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_CLK_OFF));
103 }
104
a6xx_gmu_set_freq(struct msm_gpu * gpu,struct dev_pm_opp * opp,bool suspended)105 void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp,
106 bool suspended)
107 {
108 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
109 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
110 struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
111 u32 perf_index;
112 unsigned long gpu_freq;
113 int ret = 0;
114
115 gpu_freq = dev_pm_opp_get_freq(opp);
116
117 if (gpu_freq == gmu->freq)
118 return;
119
120 for (perf_index = 0; perf_index < gmu->nr_gpu_freqs - 1; perf_index++)
121 if (gpu_freq == gmu->gpu_freqs[perf_index])
122 break;
123
124 gmu->current_perf_index = perf_index;
125 gmu->freq = gmu->gpu_freqs[perf_index];
126
127 trace_msm_gmu_freq_change(gmu->freq, perf_index);
128
129 /*
130 * This can get called from devfreq while the hardware is idle. Don't
131 * bring up the power if it isn't already active. All we're doing here
132 * is updating the frequency so that when we come back online we're at
133 * the right rate.
134 */
135 if (suspended)
136 return;
137
138 if (!gmu->legacy) {
139 a6xx_hfi_set_freq(gmu, perf_index);
140 dev_pm_opp_set_opp(&gpu->pdev->dev, opp);
141 return;
142 }
143
144 gmu_write(gmu, REG_A6XX_GMU_DCVS_ACK_OPTION, 0);
145
146 gmu_write(gmu, REG_A6XX_GMU_DCVS_PERF_SETTING,
147 ((3 & 0xf) << 28) | perf_index);
148
149 /*
150 * Send an invalid index as a vote for the bus bandwidth and let the
151 * firmware decide on the right vote
152 */
153 gmu_write(gmu, REG_A6XX_GMU_DCVS_BW_SETTING, 0xff);
154
155 /* Set and clear the OOB for DCVS to trigger the GMU */
156 a6xx_gmu_set_oob(gmu, GMU_OOB_DCVS_SET);
157 a6xx_gmu_clear_oob(gmu, GMU_OOB_DCVS_SET);
158
159 ret = gmu_read(gmu, REG_A6XX_GMU_DCVS_RETURN);
160 if (ret)
161 dev_err(gmu->dev, "GMU set GPU frequency error: %d\n", ret);
162
163 dev_pm_opp_set_opp(&gpu->pdev->dev, opp);
164 }
165
a6xx_gmu_get_freq(struct msm_gpu * gpu)166 unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu)
167 {
168 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
169 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
170 struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
171
172 return gmu->freq;
173 }
174
a6xx_gmu_check_idle_level(struct a6xx_gmu * gmu)175 static bool a6xx_gmu_check_idle_level(struct a6xx_gmu *gmu)
176 {
177 u32 val;
178 int local = gmu->idle_level;
179
180 /* SPTP and IFPC both report as IFPC */
181 if (gmu->idle_level == GMU_IDLE_STATE_SPTP)
182 local = GMU_IDLE_STATE_IFPC;
183
184 val = gmu_read(gmu, REG_A6XX_GPU_GMU_CX_GMU_RPMH_POWER_STATE);
185
186 if (val == local) {
187 if (gmu->idle_level != GMU_IDLE_STATE_IFPC ||
188 !a6xx_gmu_gx_is_on(gmu))
189 return true;
190 }
191
192 return false;
193 }
194
195 /* Wait for the GMU to get to its most idle state */
a6xx_gmu_wait_for_idle(struct a6xx_gmu * gmu)196 int a6xx_gmu_wait_for_idle(struct a6xx_gmu *gmu)
197 {
198 return spin_until(a6xx_gmu_check_idle_level(gmu));
199 }
200
a6xx_gmu_start(struct a6xx_gmu * gmu)201 static int a6xx_gmu_start(struct a6xx_gmu *gmu)
202 {
203 int ret;
204 u32 val;
205 u32 mask, reset_val;
206
207 val = gmu_read(gmu, REG_A6XX_GMU_CM3_DTCM_START + 0xff8);
208 if (val <= 0x20010004) {
209 mask = 0xffffffff;
210 reset_val = 0xbabeface;
211 } else {
212 mask = 0x1ff;
213 reset_val = 0x100;
214 }
215
216 gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 1);
217
218 /* Set the log wptr index
219 * note: downstream saves the value in poweroff and restores it here
220 */
221 gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_PWR_COL_CP_RESP, 0);
222
223 gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 0);
224
225 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_CM3_FW_INIT_RESULT, val,
226 (val & mask) == reset_val, 100, 10000);
227
228 if (ret)
229 DRM_DEV_ERROR(gmu->dev, "GMU firmware initialization timed out\n");
230
231 return ret;
232 }
233
a6xx_gmu_hfi_start(struct a6xx_gmu * gmu)234 static int a6xx_gmu_hfi_start(struct a6xx_gmu *gmu)
235 {
236 u32 val;
237 int ret;
238
239 gmu_write(gmu, REG_A6XX_GMU_HFI_CTRL_INIT, 1);
240
241 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_HFI_CTRL_STATUS, val,
242 val & 1, 100, 10000);
243 if (ret)
244 DRM_DEV_ERROR(gmu->dev, "Unable to start the HFI queues\n");
245
246 return ret;
247 }
248
249 struct a6xx_gmu_oob_bits {
250 int set, ack, set_new, ack_new, clear, clear_new;
251 const char *name;
252 };
253
254 /* These are the interrupt / ack bits for each OOB request that are set
255 * in a6xx_gmu_set_oob and a6xx_clear_oob
256 */
257 static const struct a6xx_gmu_oob_bits a6xx_gmu_oob_bits[] = {
258 [GMU_OOB_GPU_SET] = {
259 .name = "GPU_SET",
260 .set = 16,
261 .ack = 24,
262 .set_new = 30,
263 .ack_new = 31,
264 .clear = 24,
265 .clear_new = 31,
266 },
267
268 [GMU_OOB_PERFCOUNTER_SET] = {
269 .name = "PERFCOUNTER",
270 .set = 17,
271 .ack = 25,
272 .set_new = 28,
273 .ack_new = 30,
274 .clear = 25,
275 .clear_new = 29,
276 },
277
278 [GMU_OOB_BOOT_SLUMBER] = {
279 .name = "BOOT_SLUMBER",
280 .set = 22,
281 .ack = 30,
282 .clear = 30,
283 },
284
285 [GMU_OOB_DCVS_SET] = {
286 .name = "GPU_DCVS",
287 .set = 23,
288 .ack = 31,
289 .clear = 31,
290 },
291 };
292
293 /* Trigger a OOB (out of band) request to the GMU */
a6xx_gmu_set_oob(struct a6xx_gmu * gmu,enum a6xx_gmu_oob_state state)294 int a6xx_gmu_set_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state)
295 {
296 int ret;
297 u32 val;
298 int request, ack;
299
300 WARN_ON_ONCE(!mutex_is_locked(&gmu->lock));
301
302 if (state >= ARRAY_SIZE(a6xx_gmu_oob_bits))
303 return -EINVAL;
304
305 if (gmu->legacy) {
306 request = a6xx_gmu_oob_bits[state].set;
307 ack = a6xx_gmu_oob_bits[state].ack;
308 } else {
309 request = a6xx_gmu_oob_bits[state].set_new;
310 ack = a6xx_gmu_oob_bits[state].ack_new;
311 if (!request || !ack) {
312 DRM_DEV_ERROR(gmu->dev,
313 "Invalid non-legacy GMU request %s\n",
314 a6xx_gmu_oob_bits[state].name);
315 return -EINVAL;
316 }
317 }
318
319 /* Trigger the equested OOB operation */
320 gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET, 1 << request);
321
322 /* Wait for the acknowledge interrupt */
323 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO, val,
324 val & (1 << ack), 100, 10000);
325
326 if (ret)
327 DRM_DEV_ERROR(gmu->dev,
328 "Timeout waiting for GMU OOB set %s: 0x%x\n",
329 a6xx_gmu_oob_bits[state].name,
330 gmu_read(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO));
331
332 /* Clear the acknowledge interrupt */
333 gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, 1 << ack);
334
335 return ret;
336 }
337
338 /* Clear a pending OOB state in the GMU */
a6xx_gmu_clear_oob(struct a6xx_gmu * gmu,enum a6xx_gmu_oob_state state)339 void a6xx_gmu_clear_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state)
340 {
341 int bit;
342
343 WARN_ON_ONCE(!mutex_is_locked(&gmu->lock));
344
345 if (state >= ARRAY_SIZE(a6xx_gmu_oob_bits))
346 return;
347
348 if (gmu->legacy)
349 bit = a6xx_gmu_oob_bits[state].clear;
350 else
351 bit = a6xx_gmu_oob_bits[state].clear_new;
352
353 gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET, 1 << bit);
354 }
355
356 /* Enable CPU control of SPTP power power collapse */
a6xx_sptprac_enable(struct a6xx_gmu * gmu)357 static int a6xx_sptprac_enable(struct a6xx_gmu *gmu)
358 {
359 int ret;
360 u32 val;
361
362 if (!gmu->legacy)
363 return 0;
364
365 gmu_write(gmu, REG_A6XX_GMU_GX_SPTPRAC_POWER_CONTROL, 0x778000);
366
367 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS, val,
368 (val & 0x38) == 0x28, 1, 100);
369
370 if (ret) {
371 DRM_DEV_ERROR(gmu->dev, "Unable to power on SPTPRAC: 0x%x\n",
372 gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS));
373 }
374
375 return 0;
376 }
377
378 /* Disable CPU control of SPTP power power collapse */
a6xx_sptprac_disable(struct a6xx_gmu * gmu)379 static void a6xx_sptprac_disable(struct a6xx_gmu *gmu)
380 {
381 u32 val;
382 int ret;
383
384 if (!gmu->legacy)
385 return;
386
387 /* Make sure retention is on */
388 gmu_rmw(gmu, REG_A6XX_GPU_CC_GX_GDSCR, 0, (1 << 11));
389
390 gmu_write(gmu, REG_A6XX_GMU_GX_SPTPRAC_POWER_CONTROL, 0x778001);
391
392 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS, val,
393 (val & 0x04), 100, 10000);
394
395 if (ret)
396 DRM_DEV_ERROR(gmu->dev, "failed to power off SPTPRAC: 0x%x\n",
397 gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS));
398 }
399
400 /* Let the GMU know we are starting a boot sequence */
a6xx_gmu_gfx_rail_on(struct a6xx_gmu * gmu)401 static int a6xx_gmu_gfx_rail_on(struct a6xx_gmu *gmu)
402 {
403 u32 vote;
404
405 /* Let the GMU know we are getting ready for boot */
406 gmu_write(gmu, REG_A6XX_GMU_BOOT_SLUMBER_OPTION, 0);
407
408 /* Choose the "default" power level as the highest available */
409 vote = gmu->gx_arc_votes[gmu->nr_gpu_freqs - 1];
410
411 gmu_write(gmu, REG_A6XX_GMU_GX_VOTE_IDX, vote & 0xff);
412 gmu_write(gmu, REG_A6XX_GMU_MX_VOTE_IDX, (vote >> 8) & 0xff);
413
414 /* Let the GMU know the boot sequence has started */
415 return a6xx_gmu_set_oob(gmu, GMU_OOB_BOOT_SLUMBER);
416 }
417
418 /* Let the GMU know that we are about to go into slumber */
a6xx_gmu_notify_slumber(struct a6xx_gmu * gmu)419 static int a6xx_gmu_notify_slumber(struct a6xx_gmu *gmu)
420 {
421 int ret;
422
423 /* Disable the power counter so the GMU isn't busy */
424 gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 0);
425
426 /* Disable SPTP_PC if the CPU is responsible for it */
427 if (gmu->idle_level < GMU_IDLE_STATE_SPTP)
428 a6xx_sptprac_disable(gmu);
429
430 if (!gmu->legacy) {
431 ret = a6xx_hfi_send_prep_slumber(gmu);
432 goto out;
433 }
434
435 /* Tell the GMU to get ready to slumber */
436 gmu_write(gmu, REG_A6XX_GMU_BOOT_SLUMBER_OPTION, 1);
437
438 ret = a6xx_gmu_set_oob(gmu, GMU_OOB_BOOT_SLUMBER);
439 a6xx_gmu_clear_oob(gmu, GMU_OOB_BOOT_SLUMBER);
440
441 if (!ret) {
442 /* Check to see if the GMU really did slumber */
443 if (gmu_read(gmu, REG_A6XX_GPU_GMU_CX_GMU_RPMH_POWER_STATE)
444 != 0x0f) {
445 DRM_DEV_ERROR(gmu->dev, "The GMU did not go into slumber\n");
446 ret = -ETIMEDOUT;
447 }
448 }
449
450 out:
451 /* Put fence into allow mode */
452 gmu_write(gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0);
453 return ret;
454 }
455
a6xx_rpmh_start(struct a6xx_gmu * gmu)456 static int a6xx_rpmh_start(struct a6xx_gmu *gmu)
457 {
458 int ret;
459 u32 val;
460
461 gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 1 << 1);
462 /* Wait for the register to finish posting */
463 wmb();
464
465 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_RSCC_CONTROL_ACK, val,
466 val & (1 << 1), 100, 10000);
467 if (ret) {
468 DRM_DEV_ERROR(gmu->dev, "Unable to power on the GPU RSC\n");
469 return ret;
470 }
471
472 ret = gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_SEQ_BUSY_DRV0, val,
473 !val, 100, 10000);
474
475 if (ret) {
476 DRM_DEV_ERROR(gmu->dev, "GPU RSC sequence stuck while waking up the GPU\n");
477 return ret;
478 }
479
480 gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0);
481
482 /* Set up CX GMU counter 0 to count busy ticks */
483 gmu_write(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_MASK, 0xff000000);
484 gmu_rmw(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_SELECT_0, 0xff, 0x20);
485
486 /* Enable the power counter */
487 gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 1);
488 return 0;
489 }
490
a6xx_rpmh_stop(struct a6xx_gmu * gmu)491 static void a6xx_rpmh_stop(struct a6xx_gmu *gmu)
492 {
493 int ret;
494 u32 val;
495
496 gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 1);
497
498 ret = gmu_poll_timeout_rscc(gmu, REG_A6XX_GPU_RSCC_RSC_STATUS0_DRV0,
499 val, val & (1 << 16), 100, 10000);
500 if (ret)
501 DRM_DEV_ERROR(gmu->dev, "Unable to power off the GPU RSC\n");
502
503 gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0);
504 }
505
pdc_write(void __iomem * ptr,u32 offset,u32 value)506 static inline void pdc_write(void __iomem *ptr, u32 offset, u32 value)
507 {
508 msm_writel(value, ptr + (offset << 2));
509 }
510
511 static void __iomem *a6xx_gmu_get_mmio(struct platform_device *pdev,
512 const char *name);
513
a6xx_gmu_rpmh_init(struct a6xx_gmu * gmu)514 static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu)
515 {
516 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
517 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
518 struct platform_device *pdev = to_platform_device(gmu->dev);
519 void __iomem *pdcptr = a6xx_gmu_get_mmio(pdev, "gmu_pdc");
520 void __iomem *seqptr = NULL;
521 uint32_t pdc_address_offset;
522 bool pdc_in_aop = false;
523
524 if (IS_ERR(pdcptr))
525 goto err;
526
527 if (adreno_is_a650(adreno_gpu) || adreno_is_a660_family(adreno_gpu))
528 pdc_in_aop = true;
529 else if (adreno_is_a618(adreno_gpu) || adreno_is_a640_family(adreno_gpu))
530 pdc_address_offset = 0x30090;
531 else if (adreno_is_a619(adreno_gpu))
532 pdc_address_offset = 0x300a0;
533 else
534 pdc_address_offset = 0x30080;
535
536 if (!pdc_in_aop) {
537 seqptr = a6xx_gmu_get_mmio(pdev, "gmu_pdc_seq");
538 if (IS_ERR(seqptr))
539 goto err;
540 }
541
542 /* Disable SDE clock gating */
543 gmu_write_rscc(gmu, REG_A6XX_GPU_RSCC_RSC_STATUS0_DRV0, BIT(24));
544
545 /* Setup RSC PDC handshake for sleep and wakeup */
546 gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_SLAVE_ID_DRV0, 1);
547 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA, 0);
548 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR, 0);
549 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA + 2, 0);
550 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR + 2, 0);
551 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA + 4, 0x80000000);
552 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR + 4, 0);
553 gmu_write_rscc(gmu, REG_A6XX_RSCC_OVERRIDE_START_ADDR, 0);
554 gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_SEQ_START_ADDR, 0x4520);
555 gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_MATCH_VALUE_LO, 0x4510);
556 gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_MATCH_VALUE_HI, 0x4514);
557
558 /* Load RSC sequencer uCode for sleep and wakeup */
559 if (adreno_is_a650_family(adreno_gpu)) {
560 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0, 0xeaaae5a0);
561 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 1, 0xe1a1ebab);
562 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 2, 0xa2e0a581);
563 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 3, 0xecac82e2);
564 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 4, 0x0020edad);
565 } else {
566 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0, 0xa7a506a0);
567 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 1, 0xa1e6a6e7);
568 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 2, 0xa2e081e1);
569 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 3, 0xe9a982e2);
570 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 4, 0x0020e8a8);
571 }
572
573 if (pdc_in_aop)
574 goto setup_pdc;
575
576 /* Load PDC sequencer uCode for power up and power down sequence */
577 pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0, 0xfebea1e1);
578 pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 1, 0xa5a4a3a2);
579 pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 2, 0x8382a6e0);
580 pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 3, 0xbce3e284);
581 pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 4, 0x002081fc);
582
583 /* Set TCS commands used by PDC sequence for low power modes */
584 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD_ENABLE_BANK, 7);
585 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD_WAIT_FOR_CMPL_BANK, 0);
586 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CONTROL, 0);
587 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID, 0x10108);
588 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR, 0x30010);
589 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA, 1);
590 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID + 4, 0x10108);
591 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR + 4, 0x30000);
592 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA + 4, 0x0);
593
594 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID + 8, 0x10108);
595 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR + 8, pdc_address_offset);
596 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA + 8, 0x0);
597
598 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD_ENABLE_BANK, 7);
599 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD_WAIT_FOR_CMPL_BANK, 0);
600 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CONTROL, 0);
601 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID, 0x10108);
602 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR, 0x30010);
603 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA, 2);
604
605 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID + 4, 0x10108);
606 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR + 4, 0x30000);
607 if (adreno_is_a618(adreno_gpu) || adreno_is_a619(adreno_gpu) ||
608 adreno_is_a650_family(adreno_gpu))
609 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 4, 0x2);
610 else
611 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 4, 0x3);
612 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID + 8, 0x10108);
613 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR + 8, pdc_address_offset);
614 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 8, 0x3);
615
616 /* Setup GPU PDC */
617 setup_pdc:
618 pdc_write(pdcptr, REG_A6XX_PDC_GPU_SEQ_START_ADDR, 0);
619 pdc_write(pdcptr, REG_A6XX_PDC_GPU_ENABLE_PDC, 0x80000001);
620
621 /* ensure no writes happen before the uCode is fully written */
622 wmb();
623
624 err:
625 if (!IS_ERR_OR_NULL(pdcptr))
626 iounmap(pdcptr);
627 if (!IS_ERR_OR_NULL(seqptr))
628 iounmap(seqptr);
629 }
630
631 /*
632 * The lowest 16 bits of this value are the number of XO clock cycles for main
633 * hysteresis which is set at 0x1680 cycles (300 us). The higher 16 bits are
634 * for the shorter hysteresis that happens after main - this is 0xa (.5 us)
635 */
636
637 #define GMU_PWR_COL_HYST 0x000a1680
638
639 /* Set up the idle state for the GMU */
a6xx_gmu_power_config(struct a6xx_gmu * gmu)640 static void a6xx_gmu_power_config(struct a6xx_gmu *gmu)
641 {
642 /* Disable GMU WB/RB buffer */
643 gmu_write(gmu, REG_A6XX_GMU_SYS_BUS_CONFIG, 0x1);
644 gmu_write(gmu, REG_A6XX_GMU_ICACHE_CONFIG, 0x1);
645 gmu_write(gmu, REG_A6XX_GMU_DCACHE_CONFIG, 0x1);
646
647 gmu_write(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0x9c40400);
648
649 switch (gmu->idle_level) {
650 case GMU_IDLE_STATE_IFPC:
651 gmu_write(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_HYST,
652 GMU_PWR_COL_HYST);
653 gmu_rmw(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0,
654 A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_IFPC_ENABLE |
655 A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_HM_POWER_COLLAPSE_ENABLE);
656 fallthrough;
657 case GMU_IDLE_STATE_SPTP:
658 gmu_write(gmu, REG_A6XX_GMU_PWR_COL_SPTPRAC_HYST,
659 GMU_PWR_COL_HYST);
660 gmu_rmw(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0,
661 A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_IFPC_ENABLE |
662 A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_SPTPRAC_POWER_CONTROL_ENABLE);
663 }
664
665 /* Enable RPMh GPU client */
666 gmu_rmw(gmu, REG_A6XX_GMU_RPMH_CTRL, 0,
667 A6XX_GMU_RPMH_CTRL_RPMH_INTERFACE_ENABLE |
668 A6XX_GMU_RPMH_CTRL_LLC_VOTE_ENABLE |
669 A6XX_GMU_RPMH_CTRL_DDR_VOTE_ENABLE |
670 A6XX_GMU_RPMH_CTRL_MX_VOTE_ENABLE |
671 A6XX_GMU_RPMH_CTRL_CX_VOTE_ENABLE |
672 A6XX_GMU_RPMH_CTRL_GFX_VOTE_ENABLE);
673 }
674
675 struct block_header {
676 u32 addr;
677 u32 size;
678 u32 type;
679 u32 value;
680 u32 data[];
681 };
682
683 /* this should be a general kernel helper */
in_range(u32 addr,u32 start,u32 size)684 static int in_range(u32 addr, u32 start, u32 size)
685 {
686 return addr >= start && addr < start + size;
687 }
688
fw_block_mem(struct a6xx_gmu_bo * bo,const struct block_header * blk)689 static bool fw_block_mem(struct a6xx_gmu_bo *bo, const struct block_header *blk)
690 {
691 if (!in_range(blk->addr, bo->iova, bo->size))
692 return false;
693
694 memcpy(bo->virt + blk->addr - bo->iova, blk->data, blk->size);
695 return true;
696 }
697
a6xx_gmu_fw_load(struct a6xx_gmu * gmu)698 static int a6xx_gmu_fw_load(struct a6xx_gmu *gmu)
699 {
700 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
701 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
702 const struct firmware *fw_image = adreno_gpu->fw[ADRENO_FW_GMU];
703 const struct block_header *blk;
704 u32 reg_offset;
705
706 u32 itcm_base = 0x00000000;
707 u32 dtcm_base = 0x00040000;
708
709 if (adreno_is_a650_family(adreno_gpu))
710 dtcm_base = 0x10004000;
711
712 if (gmu->legacy) {
713 /* Sanity check the size of the firmware that was loaded */
714 if (fw_image->size > 0x8000) {
715 DRM_DEV_ERROR(gmu->dev,
716 "GMU firmware is bigger than the available region\n");
717 return -EINVAL;
718 }
719
720 gmu_write_bulk(gmu, REG_A6XX_GMU_CM3_ITCM_START,
721 (u32*) fw_image->data, fw_image->size);
722 return 0;
723 }
724
725
726 for (blk = (const struct block_header *) fw_image->data;
727 (const u8*) blk < fw_image->data + fw_image->size;
728 blk = (const struct block_header *) &blk->data[blk->size >> 2]) {
729 if (blk->size == 0)
730 continue;
731
732 if (in_range(blk->addr, itcm_base, SZ_16K)) {
733 reg_offset = (blk->addr - itcm_base) >> 2;
734 gmu_write_bulk(gmu,
735 REG_A6XX_GMU_CM3_ITCM_START + reg_offset,
736 blk->data, blk->size);
737 } else if (in_range(blk->addr, dtcm_base, SZ_16K)) {
738 reg_offset = (blk->addr - dtcm_base) >> 2;
739 gmu_write_bulk(gmu,
740 REG_A6XX_GMU_CM3_DTCM_START + reg_offset,
741 blk->data, blk->size);
742 } else if (!fw_block_mem(&gmu->icache, blk) &&
743 !fw_block_mem(&gmu->dcache, blk) &&
744 !fw_block_mem(&gmu->dummy, blk)) {
745 DRM_DEV_ERROR(gmu->dev,
746 "failed to match fw block (addr=%.8x size=%d data[0]=%.8x)\n",
747 blk->addr, blk->size, blk->data[0]);
748 }
749 }
750
751 return 0;
752 }
753
a6xx_gmu_fw_start(struct a6xx_gmu * gmu,unsigned int state)754 static int a6xx_gmu_fw_start(struct a6xx_gmu *gmu, unsigned int state)
755 {
756 static bool rpmh_init;
757 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
758 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
759 int ret;
760 u32 chipid;
761
762 if (adreno_is_a650_family(adreno_gpu)) {
763 gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_CX_FALNEXT_INTF, 1);
764 gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_CX_FAL_INTF, 1);
765 }
766
767 if (state == GMU_WARM_BOOT) {
768 ret = a6xx_rpmh_start(gmu);
769 if (ret)
770 return ret;
771 } else {
772 if (WARN(!adreno_gpu->fw[ADRENO_FW_GMU],
773 "GMU firmware is not loaded\n"))
774 return -ENOENT;
775
776 /* Turn on register retention */
777 gmu_write(gmu, REG_A6XX_GMU_GENERAL_7, 1);
778
779 /* We only need to load the RPMh microcode once */
780 if (!rpmh_init) {
781 a6xx_gmu_rpmh_init(gmu);
782 rpmh_init = true;
783 } else {
784 ret = a6xx_rpmh_start(gmu);
785 if (ret)
786 return ret;
787 }
788
789 ret = a6xx_gmu_fw_load(gmu);
790 if (ret)
791 return ret;
792 }
793
794 gmu_write(gmu, REG_A6XX_GMU_CM3_FW_INIT_RESULT, 0);
795 gmu_write(gmu, REG_A6XX_GMU_CM3_BOOT_CONFIG, 0x02);
796
797 /* Write the iova of the HFI table */
798 gmu_write(gmu, REG_A6XX_GMU_HFI_QTBL_ADDR, gmu->hfi.iova);
799 gmu_write(gmu, REG_A6XX_GMU_HFI_QTBL_INFO, 1);
800
801 gmu_write(gmu, REG_A6XX_GMU_AHB_FENCE_RANGE_0,
802 (1 << 31) | (0xa << 18) | (0xa0));
803
804 chipid = adreno_gpu->rev.core << 24;
805 chipid |= adreno_gpu->rev.major << 16;
806 chipid |= adreno_gpu->rev.minor << 12;
807 chipid |= adreno_gpu->rev.patchid << 8;
808
809 gmu_write(gmu, REG_A6XX_GMU_HFI_SFR_ADDR, chipid);
810
811 gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_PWR_COL_CP_MSG,
812 gmu->log.iova | (gmu->log.size / SZ_4K - 1));
813
814 /* Set up the lowest idle level on the GMU */
815 a6xx_gmu_power_config(gmu);
816
817 ret = a6xx_gmu_start(gmu);
818 if (ret)
819 return ret;
820
821 if (gmu->legacy) {
822 ret = a6xx_gmu_gfx_rail_on(gmu);
823 if (ret)
824 return ret;
825 }
826
827 /* Enable SPTP_PC if the CPU is responsible for it */
828 if (gmu->idle_level < GMU_IDLE_STATE_SPTP) {
829 ret = a6xx_sptprac_enable(gmu);
830 if (ret)
831 return ret;
832 }
833
834 ret = a6xx_gmu_hfi_start(gmu);
835 if (ret)
836 return ret;
837
838 /* FIXME: Do we need this wmb() here? */
839 wmb();
840
841 return 0;
842 }
843
844 #define A6XX_HFI_IRQ_MASK \
845 (A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT)
846
847 #define A6XX_GMU_IRQ_MASK \
848 (A6XX_GMU_AO_HOST_INTERRUPT_STATUS_WDOG_BITE | \
849 A6XX_GMU_AO_HOST_INTERRUPT_STATUS_HOST_AHB_BUS_ERROR | \
850 A6XX_GMU_AO_HOST_INTERRUPT_STATUS_FENCE_ERR)
851
a6xx_gmu_irq_disable(struct a6xx_gmu * gmu)852 static void a6xx_gmu_irq_disable(struct a6xx_gmu *gmu)
853 {
854 disable_irq(gmu->gmu_irq);
855 disable_irq(gmu->hfi_irq);
856
857 gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_MASK, ~0);
858 gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK, ~0);
859 }
860
a6xx_gmu_rpmh_off(struct a6xx_gmu * gmu)861 static void a6xx_gmu_rpmh_off(struct a6xx_gmu *gmu)
862 {
863 u32 val;
864
865 /* Make sure there are no outstanding RPMh votes */
866 gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS0_DRV0_STATUS, val,
867 (val & 1), 100, 10000);
868 gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS1_DRV0_STATUS, val,
869 (val & 1), 100, 10000);
870 gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS2_DRV0_STATUS, val,
871 (val & 1), 100, 10000);
872 gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS3_DRV0_STATUS, val,
873 (val & 1), 100, 1000);
874 }
875
876 #define GBIF_CLIENT_HALT_MASK BIT(0)
877 #define GBIF_ARB_HALT_MASK BIT(1)
878
a6xx_bus_clear_pending_transactions(struct adreno_gpu * adreno_gpu)879 static void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu)
880 {
881 struct msm_gpu *gpu = &adreno_gpu->base;
882
883 if (!a6xx_has_gbif(adreno_gpu)) {
884 gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0xf);
885 spin_until((gpu_read(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL1) &
886 0xf) == 0xf);
887 gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0);
888
889 return;
890 }
891
892 /* Halt the gx side of GBIF */
893 gpu_write(gpu, REG_A6XX_RBBM_GBIF_HALT, 1);
894 spin_until(gpu_read(gpu, REG_A6XX_RBBM_GBIF_HALT_ACK) & 1);
895
896 /* Halt new client requests on GBIF */
897 gpu_write(gpu, REG_A6XX_GBIF_HALT, GBIF_CLIENT_HALT_MASK);
898 spin_until((gpu_read(gpu, REG_A6XX_GBIF_HALT_ACK) &
899 (GBIF_CLIENT_HALT_MASK)) == GBIF_CLIENT_HALT_MASK);
900
901 /* Halt all AXI requests on GBIF */
902 gpu_write(gpu, REG_A6XX_GBIF_HALT, GBIF_ARB_HALT_MASK);
903 spin_until((gpu_read(gpu, REG_A6XX_GBIF_HALT_ACK) &
904 (GBIF_ARB_HALT_MASK)) == GBIF_ARB_HALT_MASK);
905
906 /* The GBIF halt needs to be explicitly cleared */
907 gpu_write(gpu, REG_A6XX_GBIF_HALT, 0x0);
908 }
909
910 /* Force the GMU off in case it isn't responsive */
a6xx_gmu_force_off(struct a6xx_gmu * gmu)911 static void a6xx_gmu_force_off(struct a6xx_gmu *gmu)
912 {
913 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
914 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
915 struct msm_gpu *gpu = &adreno_gpu->base;
916
917 /* Flush all the queues */
918 a6xx_hfi_stop(gmu);
919
920 /* Stop the interrupts */
921 a6xx_gmu_irq_disable(gmu);
922
923 /* Force off SPTP in case the GMU is managing it */
924 a6xx_sptprac_disable(gmu);
925
926 /* Make sure there are no outstanding RPMh votes */
927 a6xx_gmu_rpmh_off(gmu);
928
929 /* Halt the gmu cm3 core */
930 gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 1);
931
932 a6xx_bus_clear_pending_transactions(adreno_gpu);
933
934 /* Reset GPU core blocks */
935 gpu_write(gpu, REG_A6XX_RBBM_SW_RESET_CMD, 1);
936 udelay(100);
937 }
938
a6xx_gmu_set_initial_freq(struct msm_gpu * gpu,struct a6xx_gmu * gmu)939 static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
940 {
941 struct dev_pm_opp *gpu_opp;
942 unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index];
943
944 gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true);
945 if (IS_ERR(gpu_opp))
946 return;
947
948 gmu->freq = 0; /* so a6xx_gmu_set_freq() doesn't exit early */
949 a6xx_gmu_set_freq(gpu, gpu_opp, false);
950 dev_pm_opp_put(gpu_opp);
951 }
952
a6xx_gmu_set_initial_bw(struct msm_gpu * gpu,struct a6xx_gmu * gmu)953 static void a6xx_gmu_set_initial_bw(struct msm_gpu *gpu, struct a6xx_gmu *gmu)
954 {
955 struct dev_pm_opp *gpu_opp;
956 unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index];
957
958 gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true);
959 if (IS_ERR(gpu_opp))
960 return;
961
962 dev_pm_opp_set_opp(&gpu->pdev->dev, gpu_opp);
963 dev_pm_opp_put(gpu_opp);
964 }
965
a6xx_gmu_resume(struct a6xx_gpu * a6xx_gpu)966 int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
967 {
968 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
969 struct msm_gpu *gpu = &adreno_gpu->base;
970 struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
971 int status, ret;
972
973 if (WARN(!gmu->initialized, "The GMU is not set up yet\n"))
974 return 0;
975
976 gmu->hung = false;
977
978 /* Turn on the resources */
979 pm_runtime_get_sync(gmu->dev);
980
981 /*
982 * "enable" the GX power domain which won't actually do anything but it
983 * will make sure that the refcounting is correct in case we need to
984 * bring down the GX after a GMU failure
985 */
986 if (!IS_ERR_OR_NULL(gmu->gxpd))
987 pm_runtime_get_sync(gmu->gxpd);
988
989 /* Use a known rate to bring up the GMU */
990 clk_set_rate(gmu->core_clk, 200000000);
991 clk_set_rate(gmu->hub_clk, 150000000);
992 ret = clk_bulk_prepare_enable(gmu->nr_clocks, gmu->clocks);
993 if (ret) {
994 pm_runtime_put(gmu->gxpd);
995 pm_runtime_put(gmu->dev);
996 return ret;
997 }
998
999 /* Set the bus quota to a reasonable value for boot */
1000 a6xx_gmu_set_initial_bw(gpu, gmu);
1001
1002 /* Enable the GMU interrupt */
1003 gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, ~0);
1004 gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_MASK, ~A6XX_GMU_IRQ_MASK);
1005 enable_irq(gmu->gmu_irq);
1006
1007 /* Check to see if we are doing a cold or warm boot */
1008 status = gmu_read(gmu, REG_A6XX_GMU_GENERAL_7) == 1 ?
1009 GMU_WARM_BOOT : GMU_COLD_BOOT;
1010
1011 /*
1012 * Warm boot path does not work on newer GPUs
1013 * Presumably this is because icache/dcache regions must be restored
1014 */
1015 if (!gmu->legacy)
1016 status = GMU_COLD_BOOT;
1017
1018 ret = a6xx_gmu_fw_start(gmu, status);
1019 if (ret)
1020 goto out;
1021
1022 ret = a6xx_hfi_start(gmu, status);
1023 if (ret)
1024 goto out;
1025
1026 /*
1027 * Turn on the GMU firmware fault interrupt after we know the boot
1028 * sequence is successful
1029 */
1030 gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, ~0);
1031 gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK, ~A6XX_HFI_IRQ_MASK);
1032 enable_irq(gmu->hfi_irq);
1033
1034 /* Set the GPU to the current freq */
1035 a6xx_gmu_set_initial_freq(gpu, gmu);
1036
1037 out:
1038 /* On failure, shut down the GMU to leave it in a good state */
1039 if (ret) {
1040 disable_irq(gmu->gmu_irq);
1041 a6xx_rpmh_stop(gmu);
1042 pm_runtime_put(gmu->gxpd);
1043 pm_runtime_put(gmu->dev);
1044 }
1045
1046 return ret;
1047 }
1048
a6xx_gmu_isidle(struct a6xx_gmu * gmu)1049 bool a6xx_gmu_isidle(struct a6xx_gmu *gmu)
1050 {
1051 u32 reg;
1052
1053 if (!gmu->initialized)
1054 return true;
1055
1056 reg = gmu_read(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS);
1057
1058 if (reg & A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS_GPUBUSYIGNAHB)
1059 return false;
1060
1061 return true;
1062 }
1063
1064 /* Gracefully try to shut down the GMU and by extension the GPU */
a6xx_gmu_shutdown(struct a6xx_gmu * gmu)1065 static void a6xx_gmu_shutdown(struct a6xx_gmu *gmu)
1066 {
1067 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
1068 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
1069 u32 val;
1070
1071 /*
1072 * The GMU may still be in slumber unless the GPU started so check and
1073 * skip putting it back into slumber if so
1074 */
1075 val = gmu_read(gmu, REG_A6XX_GPU_GMU_CX_GMU_RPMH_POWER_STATE);
1076
1077 if (val != 0xf) {
1078 int ret = a6xx_gmu_wait_for_idle(gmu);
1079
1080 /* If the GMU isn't responding assume it is hung */
1081 if (ret) {
1082 a6xx_gmu_force_off(gmu);
1083 return;
1084 }
1085
1086 a6xx_bus_clear_pending_transactions(adreno_gpu);
1087
1088 /* tell the GMU we want to slumber */
1089 ret = a6xx_gmu_notify_slumber(gmu);
1090 if (ret) {
1091 a6xx_gmu_force_off(gmu);
1092 return;
1093 }
1094
1095 ret = gmu_poll_timeout(gmu,
1096 REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS, val,
1097 !(val & A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS_GPUBUSYIGNAHB),
1098 100, 10000);
1099
1100 /*
1101 * Let the user know we failed to slumber but don't worry too
1102 * much because we are powering down anyway
1103 */
1104
1105 if (ret)
1106 DRM_DEV_ERROR(gmu->dev,
1107 "Unable to slumber GMU: status = 0%x/0%x\n",
1108 gmu_read(gmu,
1109 REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS),
1110 gmu_read(gmu,
1111 REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS2));
1112 }
1113
1114 /* Turn off HFI */
1115 a6xx_hfi_stop(gmu);
1116
1117 /* Stop the interrupts and mask the hardware */
1118 a6xx_gmu_irq_disable(gmu);
1119
1120 /* Tell RPMh to power off the GPU */
1121 a6xx_rpmh_stop(gmu);
1122 }
1123
1124
a6xx_gmu_stop(struct a6xx_gpu * a6xx_gpu)1125 int a6xx_gmu_stop(struct a6xx_gpu *a6xx_gpu)
1126 {
1127 struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
1128 struct msm_gpu *gpu = &a6xx_gpu->base.base;
1129
1130 if (!pm_runtime_active(gmu->dev))
1131 return 0;
1132
1133 /*
1134 * Force the GMU off if we detected a hang, otherwise try to shut it
1135 * down gracefully
1136 */
1137 if (gmu->hung)
1138 a6xx_gmu_force_off(gmu);
1139 else
1140 a6xx_gmu_shutdown(gmu);
1141
1142 /* Remove the bus vote */
1143 dev_pm_opp_set_opp(&gpu->pdev->dev, NULL);
1144
1145 /*
1146 * Make sure the GX domain is off before turning off the GMU (CX)
1147 * domain. Usually the GMU does this but only if the shutdown sequence
1148 * was successful
1149 */
1150 if (!IS_ERR_OR_NULL(gmu->gxpd))
1151 pm_runtime_put_sync(gmu->gxpd);
1152
1153 clk_bulk_disable_unprepare(gmu->nr_clocks, gmu->clocks);
1154
1155 pm_runtime_put_sync(gmu->dev);
1156
1157 return 0;
1158 }
1159
a6xx_gmu_memory_free(struct a6xx_gmu * gmu)1160 static void a6xx_gmu_memory_free(struct a6xx_gmu *gmu)
1161 {
1162 msm_gem_kernel_put(gmu->hfi.obj, gmu->aspace);
1163 msm_gem_kernel_put(gmu->debug.obj, gmu->aspace);
1164 msm_gem_kernel_put(gmu->icache.obj, gmu->aspace);
1165 msm_gem_kernel_put(gmu->dcache.obj, gmu->aspace);
1166 msm_gem_kernel_put(gmu->dummy.obj, gmu->aspace);
1167 msm_gem_kernel_put(gmu->log.obj, gmu->aspace);
1168
1169 gmu->aspace->mmu->funcs->detach(gmu->aspace->mmu);
1170 msm_gem_address_space_put(gmu->aspace);
1171 }
1172
a6xx_gmu_memory_alloc(struct a6xx_gmu * gmu,struct a6xx_gmu_bo * bo,size_t size,u64 iova,const char * name)1173 static int a6xx_gmu_memory_alloc(struct a6xx_gmu *gmu, struct a6xx_gmu_bo *bo,
1174 size_t size, u64 iova, const char *name)
1175 {
1176 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
1177 struct drm_device *dev = a6xx_gpu->base.base.dev;
1178 uint32_t flags = MSM_BO_WC;
1179 u64 range_start, range_end;
1180 int ret;
1181
1182 size = PAGE_ALIGN(size);
1183 if (!iova) {
1184 /* no fixed address - use GMU's uncached range */
1185 range_start = 0x60000000 + PAGE_SIZE; /* skip dummy page */
1186 range_end = 0x80000000;
1187 } else {
1188 /* range for fixed address */
1189 range_start = iova;
1190 range_end = iova + size;
1191 /* use IOMMU_PRIV for icache/dcache */
1192 flags |= MSM_BO_MAP_PRIV;
1193 }
1194
1195 bo->obj = msm_gem_new(dev, size, flags);
1196 if (IS_ERR(bo->obj))
1197 return PTR_ERR(bo->obj);
1198
1199 ret = msm_gem_get_and_pin_iova_range(bo->obj, gmu->aspace, &bo->iova,
1200 range_start, range_end);
1201 if (ret) {
1202 drm_gem_object_put(bo->obj);
1203 return ret;
1204 }
1205
1206 bo->virt = msm_gem_get_vaddr(bo->obj);
1207 bo->size = size;
1208
1209 msm_gem_object_set_name(bo->obj, name);
1210
1211 return 0;
1212 }
1213
a6xx_gmu_memory_probe(struct a6xx_gmu * gmu)1214 static int a6xx_gmu_memory_probe(struct a6xx_gmu *gmu)
1215 {
1216 struct iommu_domain *domain;
1217 struct msm_mmu *mmu;
1218
1219 domain = iommu_domain_alloc(&platform_bus_type);
1220 if (!domain)
1221 return -ENODEV;
1222
1223 mmu = msm_iommu_new(gmu->dev, domain);
1224 gmu->aspace = msm_gem_address_space_create(mmu, "gmu", 0x0, 0x80000000);
1225 if (IS_ERR(gmu->aspace)) {
1226 iommu_domain_free(domain);
1227 return PTR_ERR(gmu->aspace);
1228 }
1229
1230 return 0;
1231 }
1232
1233 /* Return the 'arc-level' for the given frequency */
a6xx_gmu_get_arc_level(struct device * dev,unsigned long freq)1234 static unsigned int a6xx_gmu_get_arc_level(struct device *dev,
1235 unsigned long freq)
1236 {
1237 struct dev_pm_opp *opp;
1238 unsigned int val;
1239
1240 if (!freq)
1241 return 0;
1242
1243 opp = dev_pm_opp_find_freq_exact(dev, freq, true);
1244 if (IS_ERR(opp))
1245 return 0;
1246
1247 val = dev_pm_opp_get_level(opp);
1248
1249 dev_pm_opp_put(opp);
1250
1251 return val;
1252 }
1253
a6xx_gmu_rpmh_arc_votes_init(struct device * dev,u32 * votes,unsigned long * freqs,int freqs_count,const char * id)1254 static int a6xx_gmu_rpmh_arc_votes_init(struct device *dev, u32 *votes,
1255 unsigned long *freqs, int freqs_count, const char *id)
1256 {
1257 int i, j;
1258 const u16 *pri, *sec;
1259 size_t pri_count, sec_count;
1260
1261 pri = cmd_db_read_aux_data(id, &pri_count);
1262 if (IS_ERR(pri))
1263 return PTR_ERR(pri);
1264 /*
1265 * The data comes back as an array of unsigned shorts so adjust the
1266 * count accordingly
1267 */
1268 pri_count >>= 1;
1269 if (!pri_count)
1270 return -EINVAL;
1271
1272 sec = cmd_db_read_aux_data("mx.lvl", &sec_count);
1273 if (IS_ERR(sec))
1274 return PTR_ERR(sec);
1275
1276 sec_count >>= 1;
1277 if (!sec_count)
1278 return -EINVAL;
1279
1280 /* Construct a vote for each frequency */
1281 for (i = 0; i < freqs_count; i++) {
1282 u8 pindex = 0, sindex = 0;
1283 unsigned int level = a6xx_gmu_get_arc_level(dev, freqs[i]);
1284
1285 /* Get the primary index that matches the arc level */
1286 for (j = 0; j < pri_count; j++) {
1287 if (pri[j] >= level) {
1288 pindex = j;
1289 break;
1290 }
1291 }
1292
1293 if (j == pri_count) {
1294 DRM_DEV_ERROR(dev,
1295 "Level %u not found in the RPMh list\n",
1296 level);
1297 DRM_DEV_ERROR(dev, "Available levels:\n");
1298 for (j = 0; j < pri_count; j++)
1299 DRM_DEV_ERROR(dev, " %u\n", pri[j]);
1300
1301 return -EINVAL;
1302 }
1303
1304 /*
1305 * Look for a level in in the secondary list that matches. If
1306 * nothing fits, use the maximum non zero vote
1307 */
1308
1309 for (j = 0; j < sec_count; j++) {
1310 if (sec[j] >= level) {
1311 sindex = j;
1312 break;
1313 } else if (sec[j]) {
1314 sindex = j;
1315 }
1316 }
1317
1318 /* Construct the vote */
1319 votes[i] = ((pri[pindex] & 0xffff) << 16) |
1320 (sindex << 8) | pindex;
1321 }
1322
1323 return 0;
1324 }
1325
1326 /*
1327 * The GMU votes with the RPMh for itself and on behalf of the GPU but we need
1328 * to construct the list of votes on the CPU and send it over. Query the RPMh
1329 * voltage levels and build the votes
1330 */
1331
a6xx_gmu_rpmh_votes_init(struct a6xx_gmu * gmu)1332 static int a6xx_gmu_rpmh_votes_init(struct a6xx_gmu *gmu)
1333 {
1334 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
1335 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
1336 struct msm_gpu *gpu = &adreno_gpu->base;
1337 int ret;
1338
1339 /* Build the GX votes */
1340 ret = a6xx_gmu_rpmh_arc_votes_init(&gpu->pdev->dev, gmu->gx_arc_votes,
1341 gmu->gpu_freqs, gmu->nr_gpu_freqs, "gfx.lvl");
1342
1343 /* Build the CX votes */
1344 ret |= a6xx_gmu_rpmh_arc_votes_init(gmu->dev, gmu->cx_arc_votes,
1345 gmu->gmu_freqs, gmu->nr_gmu_freqs, "cx.lvl");
1346
1347 return ret;
1348 }
1349
a6xx_gmu_build_freq_table(struct device * dev,unsigned long * freqs,u32 size)1350 static int a6xx_gmu_build_freq_table(struct device *dev, unsigned long *freqs,
1351 u32 size)
1352 {
1353 int count = dev_pm_opp_get_opp_count(dev);
1354 struct dev_pm_opp *opp;
1355 int i, index = 0;
1356 unsigned long freq = 1;
1357
1358 /*
1359 * The OPP table doesn't contain the "off" frequency level so we need to
1360 * add 1 to the table size to account for it
1361 */
1362
1363 if (WARN(count + 1 > size,
1364 "The GMU frequency table is being truncated\n"))
1365 count = size - 1;
1366
1367 /* Set the "off" frequency */
1368 freqs[index++] = 0;
1369
1370 for (i = 0; i < count; i++) {
1371 opp = dev_pm_opp_find_freq_ceil(dev, &freq);
1372 if (IS_ERR(opp))
1373 break;
1374
1375 dev_pm_opp_put(opp);
1376 freqs[index++] = freq++;
1377 }
1378
1379 return index;
1380 }
1381
a6xx_gmu_pwrlevels_probe(struct a6xx_gmu * gmu)1382 static int a6xx_gmu_pwrlevels_probe(struct a6xx_gmu *gmu)
1383 {
1384 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
1385 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
1386 struct msm_gpu *gpu = &adreno_gpu->base;
1387
1388 int ret = 0;
1389
1390 /*
1391 * The GMU handles its own frequency switching so build a list of
1392 * available frequencies to send during initialization
1393 */
1394 ret = devm_pm_opp_of_add_table(gmu->dev);
1395 if (ret) {
1396 DRM_DEV_ERROR(gmu->dev, "Unable to set the OPP table for the GMU\n");
1397 return ret;
1398 }
1399
1400 gmu->nr_gmu_freqs = a6xx_gmu_build_freq_table(gmu->dev,
1401 gmu->gmu_freqs, ARRAY_SIZE(gmu->gmu_freqs));
1402
1403 /*
1404 * The GMU also handles GPU frequency switching so build a list
1405 * from the GPU OPP table
1406 */
1407 gmu->nr_gpu_freqs = a6xx_gmu_build_freq_table(&gpu->pdev->dev,
1408 gmu->gpu_freqs, ARRAY_SIZE(gmu->gpu_freqs));
1409
1410 gmu->current_perf_index = gmu->nr_gpu_freqs - 1;
1411
1412 /* Build the list of RPMh votes that we'll send to the GMU */
1413 return a6xx_gmu_rpmh_votes_init(gmu);
1414 }
1415
a6xx_gmu_clocks_probe(struct a6xx_gmu * gmu)1416 static int a6xx_gmu_clocks_probe(struct a6xx_gmu *gmu)
1417 {
1418 int ret = devm_clk_bulk_get_all(gmu->dev, &gmu->clocks);
1419
1420 if (ret < 1)
1421 return ret;
1422
1423 gmu->nr_clocks = ret;
1424
1425 gmu->core_clk = msm_clk_bulk_get_clock(gmu->clocks,
1426 gmu->nr_clocks, "gmu");
1427
1428 gmu->hub_clk = msm_clk_bulk_get_clock(gmu->clocks,
1429 gmu->nr_clocks, "hub");
1430
1431 return 0;
1432 }
1433
a6xx_gmu_get_mmio(struct platform_device * pdev,const char * name)1434 static void __iomem *a6xx_gmu_get_mmio(struct platform_device *pdev,
1435 const char *name)
1436 {
1437 void __iomem *ret;
1438 struct resource *res = platform_get_resource_byname(pdev,
1439 IORESOURCE_MEM, name);
1440
1441 if (!res) {
1442 DRM_DEV_ERROR(&pdev->dev, "Unable to find the %s registers\n", name);
1443 return ERR_PTR(-EINVAL);
1444 }
1445
1446 ret = ioremap(res->start, resource_size(res));
1447 if (!ret) {
1448 DRM_DEV_ERROR(&pdev->dev, "Unable to map the %s registers\n", name);
1449 return ERR_PTR(-EINVAL);
1450 }
1451
1452 return ret;
1453 }
1454
a6xx_gmu_get_irq(struct a6xx_gmu * gmu,struct platform_device * pdev,const char * name,irq_handler_t handler)1455 static int a6xx_gmu_get_irq(struct a6xx_gmu *gmu, struct platform_device *pdev,
1456 const char *name, irq_handler_t handler)
1457 {
1458 int irq, ret;
1459
1460 irq = platform_get_irq_byname(pdev, name);
1461
1462 ret = request_irq(irq, handler, IRQF_TRIGGER_HIGH, name, gmu);
1463 if (ret) {
1464 DRM_DEV_ERROR(&pdev->dev, "Unable to get interrupt %s %d\n",
1465 name, ret);
1466 return ret;
1467 }
1468
1469 disable_irq(irq);
1470
1471 return irq;
1472 }
1473
a6xx_gmu_remove(struct a6xx_gpu * a6xx_gpu)1474 void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu)
1475 {
1476 struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
1477 struct platform_device *pdev = to_platform_device(gmu->dev);
1478
1479 if (!gmu->initialized)
1480 return;
1481
1482 pm_runtime_force_suspend(gmu->dev);
1483
1484 if (!IS_ERR_OR_NULL(gmu->gxpd)) {
1485 pm_runtime_disable(gmu->gxpd);
1486 dev_pm_domain_detach(gmu->gxpd, false);
1487 }
1488
1489 iounmap(gmu->mmio);
1490 if (platform_get_resource_byname(pdev, IORESOURCE_MEM, "rscc"))
1491 iounmap(gmu->rscc);
1492 gmu->mmio = NULL;
1493 gmu->rscc = NULL;
1494
1495 a6xx_gmu_memory_free(gmu);
1496
1497 free_irq(gmu->gmu_irq, gmu);
1498 free_irq(gmu->hfi_irq, gmu);
1499
1500 /* Drop reference taken in of_find_device_by_node */
1501 put_device(gmu->dev);
1502
1503 gmu->initialized = false;
1504 }
1505
a6xx_gmu_init(struct a6xx_gpu * a6xx_gpu,struct device_node * node)1506 int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node)
1507 {
1508 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
1509 struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
1510 struct platform_device *pdev = of_find_device_by_node(node);
1511 int ret;
1512
1513 if (!pdev)
1514 return -ENODEV;
1515
1516 mutex_init(&gmu->lock);
1517
1518 gmu->dev = &pdev->dev;
1519
1520 of_dma_configure(gmu->dev, node, true);
1521
1522 /* Fow now, don't do anything fancy until we get our feet under us */
1523 gmu->idle_level = GMU_IDLE_STATE_ACTIVE;
1524
1525 pm_runtime_enable(gmu->dev);
1526
1527 /* Get the list of clocks */
1528 ret = a6xx_gmu_clocks_probe(gmu);
1529 if (ret)
1530 goto err_put_device;
1531
1532 ret = a6xx_gmu_memory_probe(gmu);
1533 if (ret)
1534 goto err_put_device;
1535
1536
1537 /* A660 now requires handling "prealloc requests" in GMU firmware
1538 * For now just hardcode allocations based on the known firmware.
1539 * note: there is no indication that these correspond to "dummy" or
1540 * "debug" regions, but this "guess" allows reusing these BOs which
1541 * are otherwise unused by a660.
1542 */
1543 gmu->dummy.size = SZ_4K;
1544 if (adreno_is_a660_family(adreno_gpu)) {
1545 ret = a6xx_gmu_memory_alloc(gmu, &gmu->debug, SZ_4K * 7,
1546 0x60400000, "debug");
1547 if (ret)
1548 goto err_memory;
1549
1550 gmu->dummy.size = SZ_8K;
1551 }
1552
1553 /* Allocate memory for the GMU dummy page */
1554 ret = a6xx_gmu_memory_alloc(gmu, &gmu->dummy, gmu->dummy.size,
1555 0x60000000, "dummy");
1556 if (ret)
1557 goto err_memory;
1558
1559 /* Note that a650 family also includes a660 family: */
1560 if (adreno_is_a650_family(adreno_gpu)) {
1561 ret = a6xx_gmu_memory_alloc(gmu, &gmu->icache,
1562 SZ_16M - SZ_16K, 0x04000, "icache");
1563 if (ret)
1564 goto err_memory;
1565 /*
1566 * NOTE: when porting legacy ("pre-650-family") GPUs you may be tempted to add a condition
1567 * to allocate icache/dcache here, as per downstream code flow, but it may not actually be
1568 * necessary. If you omit this step and you don't get random pagefaults, you are likely
1569 * good to go without this!
1570 */
1571 } else if (adreno_is_a640_family(adreno_gpu)) {
1572 ret = a6xx_gmu_memory_alloc(gmu, &gmu->icache,
1573 SZ_256K - SZ_16K, 0x04000, "icache");
1574 if (ret)
1575 goto err_memory;
1576
1577 ret = a6xx_gmu_memory_alloc(gmu, &gmu->dcache,
1578 SZ_256K - SZ_16K, 0x44000, "dcache");
1579 if (ret)
1580 goto err_memory;
1581 } else if (adreno_is_a630(adreno_gpu) || adreno_is_a615_family(adreno_gpu)) {
1582 /* HFI v1, has sptprac */
1583 gmu->legacy = true;
1584
1585 /* Allocate memory for the GMU debug region */
1586 ret = a6xx_gmu_memory_alloc(gmu, &gmu->debug, SZ_16K, 0, "debug");
1587 if (ret)
1588 goto err_memory;
1589 }
1590
1591 /* Allocate memory for for the HFI queues */
1592 ret = a6xx_gmu_memory_alloc(gmu, &gmu->hfi, SZ_16K, 0, "hfi");
1593 if (ret)
1594 goto err_memory;
1595
1596 /* Allocate memory for the GMU log region */
1597 ret = a6xx_gmu_memory_alloc(gmu, &gmu->log, SZ_4K, 0, "log");
1598 if (ret)
1599 goto err_memory;
1600
1601 /* Map the GMU registers */
1602 gmu->mmio = a6xx_gmu_get_mmio(pdev, "gmu");
1603 if (IS_ERR(gmu->mmio)) {
1604 ret = PTR_ERR(gmu->mmio);
1605 goto err_memory;
1606 }
1607
1608 if (adreno_is_a650_family(adreno_gpu)) {
1609 gmu->rscc = a6xx_gmu_get_mmio(pdev, "rscc");
1610 if (IS_ERR(gmu->rscc))
1611 goto err_mmio;
1612 } else {
1613 gmu->rscc = gmu->mmio + 0x23000;
1614 }
1615
1616 /* Get the HFI and GMU interrupts */
1617 gmu->hfi_irq = a6xx_gmu_get_irq(gmu, pdev, "hfi", a6xx_hfi_irq);
1618 gmu->gmu_irq = a6xx_gmu_get_irq(gmu, pdev, "gmu", a6xx_gmu_irq);
1619
1620 if (gmu->hfi_irq < 0 || gmu->gmu_irq < 0)
1621 goto err_mmio;
1622
1623 /*
1624 * Get a link to the GX power domain to reset the GPU in case of GMU
1625 * crash
1626 */
1627 gmu->gxpd = dev_pm_domain_attach_by_name(gmu->dev, "gx");
1628
1629 /* Get the power levels for the GMU and GPU */
1630 a6xx_gmu_pwrlevels_probe(gmu);
1631
1632 /* Set up the HFI queues */
1633 a6xx_hfi_init(gmu);
1634
1635 gmu->initialized = true;
1636
1637 return 0;
1638
1639 err_mmio:
1640 iounmap(gmu->mmio);
1641 if (platform_get_resource_byname(pdev, IORESOURCE_MEM, "rscc"))
1642 iounmap(gmu->rscc);
1643 free_irq(gmu->gmu_irq, gmu);
1644 free_irq(gmu->hfi_irq, gmu);
1645
1646 ret = -ENODEV;
1647
1648 err_memory:
1649 a6xx_gmu_memory_free(gmu);
1650 err_put_device:
1651 /* Drop reference taken in of_find_device_by_node */
1652 put_device(gmu->dev);
1653
1654 return ret;
1655 }
1656
