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/of_platform.h> 7 #include <linux/platform_device.h> 8 #include <linux/pm_domain.h> 9 #include <linux/pm_opp.h> 10 #include <soc/qcom/cmd-db.h> 11 #include <drm/drm_gem.h> 12 13 #include "a6xx_gpu.h" 14 #include "a6xx_gmu.xml.h" 15 #include "msm_gem.h" 16 #include "msm_gpu_trace.h" 17 #include "msm_mmu.h" 18 a6xx_gmu_fault(struct a6xx_gmu * gmu)19 static void a6xx_gmu_fault(struct a6xx_gmu *gmu) 20 { 21 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); 22 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 23 struct msm_gpu *gpu = &adreno_gpu->base; 24 25 /* FIXME: add a banner here */ 26 gmu->hung = true; 27 28 /* Turn off the hangcheck timer while we are resetting */ 29 del_timer(&gpu->hangcheck_timer); 30 31 /* Queue the GPU handler because we need to treat this as a recovery */ 32 kthread_queue_work(gpu->worker, &gpu->recover_work); 33 } 34 a6xx_gmu_irq(int irq,void * data)35 static irqreturn_t a6xx_gmu_irq(int irq, void *data) 36 { 37 struct a6xx_gmu *gmu = data; 38 u32 status; 39 40 status = gmu_read(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_STATUS); 41 gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, status); 42 43 if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_WDOG_BITE) { 44 dev_err_ratelimited(gmu->dev, "GMU watchdog expired\n"); 45 46 a6xx_gmu_fault(gmu); 47 } 48 49 if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_HOST_AHB_BUS_ERROR) 50 dev_err_ratelimited(gmu->dev, "GMU AHB bus error\n"); 51 52 if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_FENCE_ERR) 53 dev_err_ratelimited(gmu->dev, "GMU fence error: 0x%x\n", 54 gmu_read(gmu, REG_A6XX_GMU_AHB_FENCE_STATUS)); 55 56 return IRQ_HANDLED; 57 } 58 a6xx_hfi_irq(int irq,void * data)59 static irqreturn_t a6xx_hfi_irq(int irq, void *data) 60 { 61 struct a6xx_gmu *gmu = data; 62 u32 status; 63 64 status = gmu_read(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO); 65 gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, status); 66 67 if (status & A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT) { 68 dev_err_ratelimited(gmu->dev, "GMU firmware fault\n"); 69 70 a6xx_gmu_fault(gmu); 71 } 72 73 return IRQ_HANDLED; 74 } 75 a6xx_gmu_sptprac_is_on(struct a6xx_gmu * gmu)76 bool a6xx_gmu_sptprac_is_on(struct a6xx_gmu *gmu) 77 { 78 u32 val; 79 80 /* This can be called from gpu state code so make sure GMU is valid */ 81 if (!gmu->initialized) 82 return false; 83 84 val = gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS); 85 86 return !(val & 87 (A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_SPTPRAC_GDSC_POWER_OFF | 88 A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_SP_CLOCK_OFF)); 89 } 90 91 /* Check to see if the GX rail is still powered */ a6xx_gmu_gx_is_on(struct a6xx_gmu * gmu)92 bool a6xx_gmu_gx_is_on(struct a6xx_gmu *gmu) 93 { 94 u32 val; 95 96 /* This can be called from gpu state code so make sure GMU is valid */ 97 if (!gmu->initialized) 98 return false; 99 100 val = gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS); 101 102 return !(val & 103 (A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_GDSC_POWER_OFF | 104 A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_CLK_OFF)); 105 } 106 a6xx_gmu_set_freq(struct msm_gpu * gpu,struct dev_pm_opp * opp,bool suspended)107 void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp, 108 bool suspended) 109 { 110 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 111 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 112 struct a6xx_gmu *gmu = &a6xx_gpu->gmu; 113 u32 perf_index; 114 unsigned long gpu_freq; 115 int ret = 0; 116 117 gpu_freq = dev_pm_opp_get_freq(opp); 118 119 if (gpu_freq == gmu->freq) 120 return; 121 122 for (perf_index = 0; perf_index < gmu->nr_gpu_freqs - 1; perf_index++) 123 if (gpu_freq == gmu->gpu_freqs[perf_index]) 124 break; 125 126 gmu->current_perf_index = perf_index; 127 gmu->freq = gmu->gpu_freqs[perf_index]; 128 129 trace_msm_gmu_freq_change(gmu->freq, perf_index); 130 131 /* 132 * This can get called from devfreq while the hardware is idle. Don't 133 * bring up the power if it isn't already active. All we're doing here 134 * is updating the frequency so that when we come back online we're at 135 * the right rate. 136 */ 137 if (suspended) 138 return; 139 140 if (!gmu->legacy) { 141 a6xx_hfi_set_freq(gmu, perf_index); 142 dev_pm_opp_set_opp(&gpu->pdev->dev, opp); 143 return; 144 } 145 146 gmu_write(gmu, REG_A6XX_GMU_DCVS_ACK_OPTION, 0); 147 148 gmu_write(gmu, REG_A6XX_GMU_DCVS_PERF_SETTING, 149 ((3 & 0xf) << 28) | perf_index); 150 151 /* 152 * Send an invalid index as a vote for the bus bandwidth and let the 153 * firmware decide on the right vote 154 */ 155 gmu_write(gmu, REG_A6XX_GMU_DCVS_BW_SETTING, 0xff); 156 157 /* Set and clear the OOB for DCVS to trigger the GMU */ 158 a6xx_gmu_set_oob(gmu, GMU_OOB_DCVS_SET); 159 a6xx_gmu_clear_oob(gmu, GMU_OOB_DCVS_SET); 160 161 ret = gmu_read(gmu, REG_A6XX_GMU_DCVS_RETURN); 162 if (ret) 163 dev_err(gmu->dev, "GMU set GPU frequency error: %d\n", ret); 164 165 dev_pm_opp_set_opp(&gpu->pdev->dev, opp); 166 } 167 a6xx_gmu_get_freq(struct msm_gpu * gpu)168 unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu) 169 { 170 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 171 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 172 struct a6xx_gmu *gmu = &a6xx_gpu->gmu; 173 174 return gmu->freq; 175 } 176 a6xx_gmu_check_idle_level(struct a6xx_gmu * gmu)177 static bool a6xx_gmu_check_idle_level(struct a6xx_gmu *gmu) 178 { 179 u32 val; 180 int local = gmu->idle_level; 181 182 /* SPTP and IFPC both report as IFPC */ 183 if (gmu->idle_level == GMU_IDLE_STATE_SPTP) 184 local = GMU_IDLE_STATE_IFPC; 185 186 val = gmu_read(gmu, REG_A6XX_GPU_GMU_CX_GMU_RPMH_POWER_STATE); 187 188 if (val == local) { 189 if (gmu->idle_level != GMU_IDLE_STATE_IFPC || 190 !a6xx_gmu_gx_is_on(gmu)) 191 return true; 192 } 193 194 return false; 195 } 196 197 /* Wait for the GMU to get to its most idle state */ a6xx_gmu_wait_for_idle(struct a6xx_gmu * gmu)198 int a6xx_gmu_wait_for_idle(struct a6xx_gmu *gmu) 199 { 200 return spin_until(a6xx_gmu_check_idle_level(gmu)); 201 } 202 a6xx_gmu_start(struct a6xx_gmu * gmu)203 static int a6xx_gmu_start(struct a6xx_gmu *gmu) 204 { 205 int ret; 206 u32 val; 207 u32 mask, reset_val; 208 209 val = gmu_read(gmu, REG_A6XX_GMU_CM3_DTCM_START + 0xff8); 210 if (val <= 0x20010004) { 211 mask = 0xffffffff; 212 reset_val = 0xbabeface; 213 } else { 214 mask = 0x1ff; 215 reset_val = 0x100; 216 } 217 218 gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 1); 219 220 /* Set the log wptr index 221 * note: downstream saves the value in poweroff and restores it here 222 */ 223 gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_PWR_COL_CP_RESP, 0); 224 225 gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 0); 226 227 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_CM3_FW_INIT_RESULT, val, 228 (val & mask) == reset_val, 100, 10000); 229 230 if (ret) 231 DRM_DEV_ERROR(gmu->dev, "GMU firmware initialization timed out\n"); 232 233 return ret; 234 } 235 a6xx_gmu_hfi_start(struct a6xx_gmu * gmu)236 static int a6xx_gmu_hfi_start(struct a6xx_gmu *gmu) 237 { 238 u32 val; 239 int ret; 240 241 gmu_write(gmu, REG_A6XX_GMU_HFI_CTRL_INIT, 1); 242 243 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_HFI_CTRL_STATUS, val, 244 val & 1, 100, 10000); 245 if (ret) 246 DRM_DEV_ERROR(gmu->dev, "Unable to start the HFI queues\n"); 247 248 return ret; 249 } 250 251 struct a6xx_gmu_oob_bits { 252 int set, ack, set_new, ack_new, clear, clear_new; 253 const char *name; 254 }; 255 256 /* These are the interrupt / ack bits for each OOB request that are set 257 * in a6xx_gmu_set_oob and a6xx_clear_oob 258 */ 259 static const struct a6xx_gmu_oob_bits a6xx_gmu_oob_bits[] = { 260 [GMU_OOB_GPU_SET] = { 261 .name = "GPU_SET", 262 .set = 16, 263 .ack = 24, 264 .set_new = 30, 265 .ack_new = 31, 266 .clear = 24, 267 .clear_new = 31, 268 }, 269 270 [GMU_OOB_PERFCOUNTER_SET] = { 271 .name = "PERFCOUNTER", 272 .set = 17, 273 .ack = 25, 274 .set_new = 28, 275 .ack_new = 30, 276 .clear = 25, 277 .clear_new = 29, 278 }, 279 280 [GMU_OOB_BOOT_SLUMBER] = { 281 .name = "BOOT_SLUMBER", 282 .set = 22, 283 .ack = 30, 284 .clear = 30, 285 }, 286 287 [GMU_OOB_DCVS_SET] = { 288 .name = "GPU_DCVS", 289 .set = 23, 290 .ack = 31, 291 .clear = 31, 292 }, 293 }; 294 295 /* Trigger a OOB (out of band) request to the GMU */ a6xx_gmu_set_oob(struct a6xx_gmu * gmu,enum a6xx_gmu_oob_state state)296 int a6xx_gmu_set_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state) 297 { 298 int ret; 299 u32 val; 300 int request, ack; 301 302 WARN_ON_ONCE(!mutex_is_locked(&gmu->lock)); 303 304 if (state >= ARRAY_SIZE(a6xx_gmu_oob_bits)) 305 return -EINVAL; 306 307 if (gmu->legacy) { 308 request = a6xx_gmu_oob_bits[state].set; 309 ack = a6xx_gmu_oob_bits[state].ack; 310 } else { 311 request = a6xx_gmu_oob_bits[state].set_new; 312 ack = a6xx_gmu_oob_bits[state].ack_new; 313 if (!request || !ack) { 314 DRM_DEV_ERROR(gmu->dev, 315 "Invalid non-legacy GMU request %s\n", 316 a6xx_gmu_oob_bits[state].name); 317 return -EINVAL; 318 } 319 } 320 321 /* Trigger the equested OOB operation */ 322 gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET, 1 << request); 323 324 /* Wait for the acknowledge interrupt */ 325 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO, val, 326 val & (1 << ack), 100, 10000); 327 328 if (ret) 329 DRM_DEV_ERROR(gmu->dev, 330 "Timeout waiting for GMU OOB set %s: 0x%x\n", 331 a6xx_gmu_oob_bits[state].name, 332 gmu_read(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO)); 333 334 /* Clear the acknowledge interrupt */ 335 gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, 1 << ack); 336 337 return ret; 338 } 339 340 /* Clear a pending OOB state in the GMU */ a6xx_gmu_clear_oob(struct a6xx_gmu * gmu,enum a6xx_gmu_oob_state state)341 void a6xx_gmu_clear_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state) 342 { 343 int bit; 344 345 WARN_ON_ONCE(!mutex_is_locked(&gmu->lock)); 346 347 if (state >= ARRAY_SIZE(a6xx_gmu_oob_bits)) 348 return; 349 350 if (gmu->legacy) 351 bit = a6xx_gmu_oob_bits[state].clear; 352 else 353 bit = a6xx_gmu_oob_bits[state].clear_new; 354 355 gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET, 1 << bit); 356 } 357 358 /* Enable CPU control of SPTP power power collapse */ a6xx_sptprac_enable(struct a6xx_gmu * gmu)359 int a6xx_sptprac_enable(struct a6xx_gmu *gmu) 360 { 361 int ret; 362 u32 val; 363 364 if (!gmu->legacy) 365 return 0; 366 367 gmu_write(gmu, REG_A6XX_GMU_GX_SPTPRAC_POWER_CONTROL, 0x778000); 368 369 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS, val, 370 (val & 0x38) == 0x28, 1, 100); 371 372 if (ret) { 373 DRM_DEV_ERROR(gmu->dev, "Unable to power on SPTPRAC: 0x%x\n", 374 gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS)); 375 } 376 377 return 0; 378 } 379 380 /* Disable CPU control of SPTP power power collapse */ a6xx_sptprac_disable(struct a6xx_gmu * gmu)381 void a6xx_sptprac_disable(struct a6xx_gmu *gmu) 382 { 383 u32 val; 384 int ret; 385 386 if (!gmu->legacy) 387 return; 388 389 /* Make sure retention is on */ 390 gmu_rmw(gmu, REG_A6XX_GPU_CC_GX_GDSCR, 0, (1 << 11)); 391 392 gmu_write(gmu, REG_A6XX_GMU_GX_SPTPRAC_POWER_CONTROL, 0x778001); 393 394 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS, val, 395 (val & 0x04), 100, 10000); 396 397 if (ret) 398 DRM_DEV_ERROR(gmu->dev, "failed to power off SPTPRAC: 0x%x\n", 399 gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS)); 400 } 401 402 /* Let the GMU know we are starting a boot sequence */ a6xx_gmu_gfx_rail_on(struct a6xx_gmu * gmu)403 static int a6xx_gmu_gfx_rail_on(struct a6xx_gmu *gmu) 404 { 405 u32 vote; 406 407 /* Let the GMU know we are getting ready for boot */ 408 gmu_write(gmu, REG_A6XX_GMU_BOOT_SLUMBER_OPTION, 0); 409 410 /* Choose the "default" power level as the highest available */ 411 vote = gmu->gx_arc_votes[gmu->nr_gpu_freqs - 1]; 412 413 gmu_write(gmu, REG_A6XX_GMU_GX_VOTE_IDX, vote & 0xff); 414 gmu_write(gmu, REG_A6XX_GMU_MX_VOTE_IDX, (vote >> 8) & 0xff); 415 416 /* Let the GMU know the boot sequence has started */ 417 return a6xx_gmu_set_oob(gmu, GMU_OOB_BOOT_SLUMBER); 418 } 419 420 /* Let the GMU know that we are about to go into slumber */ a6xx_gmu_notify_slumber(struct a6xx_gmu * gmu)421 static int a6xx_gmu_notify_slumber(struct a6xx_gmu *gmu) 422 { 423 int ret; 424 425 /* Disable the power counter so the GMU isn't busy */ 426 gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 0); 427 428 /* Disable SPTP_PC if the CPU is responsible for it */ 429 if (gmu->idle_level < GMU_IDLE_STATE_SPTP) 430 a6xx_sptprac_disable(gmu); 431 432 if (!gmu->legacy) { 433 ret = a6xx_hfi_send_prep_slumber(gmu); 434 goto out; 435 } 436 437 /* Tell the GMU to get ready to slumber */ 438 gmu_write(gmu, REG_A6XX_GMU_BOOT_SLUMBER_OPTION, 1); 439 440 ret = a6xx_gmu_set_oob(gmu, GMU_OOB_BOOT_SLUMBER); 441 a6xx_gmu_clear_oob(gmu, GMU_OOB_BOOT_SLUMBER); 442 443 if (!ret) { 444 /* Check to see if the GMU really did slumber */ 445 if (gmu_read(gmu, REG_A6XX_GPU_GMU_CX_GMU_RPMH_POWER_STATE) 446 != 0x0f) { 447 DRM_DEV_ERROR(gmu->dev, "The GMU did not go into slumber\n"); 448 ret = -ETIMEDOUT; 449 } 450 } 451 452 out: 453 /* Put fence into allow mode */ 454 gmu_write(gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0); 455 return ret; 456 } 457 a6xx_rpmh_start(struct a6xx_gmu * gmu)458 static int a6xx_rpmh_start(struct a6xx_gmu *gmu) 459 { 460 int ret; 461 u32 val; 462 463 gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 1 << 1); 464 /* Wait for the register to finish posting */ 465 wmb(); 466 467 ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_RSCC_CONTROL_ACK, val, 468 val & (1 << 1), 100, 10000); 469 if (ret) { 470 DRM_DEV_ERROR(gmu->dev, "Unable to power on the GPU RSC\n"); 471 return ret; 472 } 473 474 ret = gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_SEQ_BUSY_DRV0, val, 475 !val, 100, 10000); 476 477 if (ret) { 478 DRM_DEV_ERROR(gmu->dev, "GPU RSC sequence stuck while waking up the GPU\n"); 479 return ret; 480 } 481 482 gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0); 483 484 return 0; 485 } 486 a6xx_rpmh_stop(struct a6xx_gmu * gmu)487 static void a6xx_rpmh_stop(struct a6xx_gmu *gmu) 488 { 489 int ret; 490 u32 val; 491 492 gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 1); 493 494 ret = gmu_poll_timeout_rscc(gmu, REG_A6XX_GPU_RSCC_RSC_STATUS0_DRV0, 495 val, val & (1 << 16), 100, 10000); 496 if (ret) 497 DRM_DEV_ERROR(gmu->dev, "Unable to power off the GPU RSC\n"); 498 499 gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0); 500 } 501 pdc_write(void __iomem * ptr,u32 offset,u32 value)502 static inline void pdc_write(void __iomem *ptr, u32 offset, u32 value) 503 { 504 msm_writel(value, ptr + (offset << 2)); 505 } 506 507 static void __iomem *a6xx_gmu_get_mmio(struct platform_device *pdev, 508 const char *name); 509 a6xx_gmu_rpmh_init(struct a6xx_gmu * gmu)510 static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu) 511 { 512 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); 513 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 514 struct platform_device *pdev = to_platform_device(gmu->dev); 515 void __iomem *pdcptr = a6xx_gmu_get_mmio(pdev, "gmu_pdc"); 516 void __iomem *seqptr = NULL; 517 uint32_t pdc_address_offset; 518 bool pdc_in_aop = false; 519 520 if (IS_ERR(pdcptr)) 521 goto err; 522 523 if (adreno_is_a650(adreno_gpu) || adreno_is_a660_family(adreno_gpu)) 524 pdc_in_aop = true; 525 else if (adreno_is_a618(adreno_gpu) || adreno_is_a640_family(adreno_gpu)) 526 pdc_address_offset = 0x30090; 527 else if (adreno_is_a619(adreno_gpu)) 528 pdc_address_offset = 0x300a0; 529 else 530 pdc_address_offset = 0x30080; 531 532 if (!pdc_in_aop) { 533 seqptr = a6xx_gmu_get_mmio(pdev, "gmu_pdc_seq"); 534 if (IS_ERR(seqptr)) 535 goto err; 536 } 537 538 /* Disable SDE clock gating */ 539 gmu_write_rscc(gmu, REG_A6XX_GPU_RSCC_RSC_STATUS0_DRV0, BIT(24)); 540 541 /* Setup RSC PDC handshake for sleep and wakeup */ 542 gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_SLAVE_ID_DRV0, 1); 543 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA, 0); 544 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR, 0); 545 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA + 2, 0); 546 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR + 2, 0); 547 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA + 4, 0x80000000); 548 gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR + 4, 0); 549 gmu_write_rscc(gmu, REG_A6XX_RSCC_OVERRIDE_START_ADDR, 0); 550 gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_SEQ_START_ADDR, 0x4520); 551 gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_MATCH_VALUE_LO, 0x4510); 552 gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_MATCH_VALUE_HI, 0x4514); 553 554 /* Load RSC sequencer uCode for sleep and wakeup */ 555 if (adreno_is_a650_family(adreno_gpu)) { 556 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0, 0xeaaae5a0); 557 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 1, 0xe1a1ebab); 558 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 2, 0xa2e0a581); 559 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 3, 0xecac82e2); 560 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 4, 0x0020edad); 561 } else { 562 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0, 0xa7a506a0); 563 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 1, 0xa1e6a6e7); 564 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 2, 0xa2e081e1); 565 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 3, 0xe9a982e2); 566 gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 4, 0x0020e8a8); 567 } 568 569 if (pdc_in_aop) 570 goto setup_pdc; 571 572 /* Load PDC sequencer uCode for power up and power down sequence */ 573 pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0, 0xfebea1e1); 574 pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 1, 0xa5a4a3a2); 575 pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 2, 0x8382a6e0); 576 pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 3, 0xbce3e284); 577 pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 4, 0x002081fc); 578 579 /* Set TCS commands used by PDC sequence for low power modes */ 580 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD_ENABLE_BANK, 7); 581 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD_WAIT_FOR_CMPL_BANK, 0); 582 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CONTROL, 0); 583 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID, 0x10108); 584 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR, 0x30010); 585 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA, 1); 586 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID + 4, 0x10108); 587 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR + 4, 0x30000); 588 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA + 4, 0x0); 589 590 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID + 8, 0x10108); 591 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR + 8, pdc_address_offset); 592 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA + 8, 0x0); 593 594 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD_ENABLE_BANK, 7); 595 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD_WAIT_FOR_CMPL_BANK, 0); 596 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CONTROL, 0); 597 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID, 0x10108); 598 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR, 0x30010); 599 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA, 2); 600 601 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID + 4, 0x10108); 602 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR + 4, 0x30000); 603 if (adreno_is_a618(adreno_gpu) || adreno_is_a619(adreno_gpu) || 604 adreno_is_a650_family(adreno_gpu)) 605 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 4, 0x2); 606 else 607 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 4, 0x3); 608 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID + 8, 0x10108); 609 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR + 8, pdc_address_offset); 610 pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 8, 0x3); 611 612 /* Setup GPU PDC */ 613 setup_pdc: 614 pdc_write(pdcptr, REG_A6XX_PDC_GPU_SEQ_START_ADDR, 0); 615 pdc_write(pdcptr, REG_A6XX_PDC_GPU_ENABLE_PDC, 0x80000001); 616 617 /* ensure no writes happen before the uCode is fully written */ 618 wmb(); 619 620 a6xx_rpmh_stop(gmu); 621 622 err: 623 if (!IS_ERR_OR_NULL(pdcptr)) 624 iounmap(pdcptr); 625 if (!IS_ERR_OR_NULL(seqptr)) 626 iounmap(seqptr); 627 } 628 629 /* 630 * The lowest 16 bits of this value are the number of XO clock cycles for main 631 * hysteresis which is set at 0x1680 cycles (300 us). The higher 16 bits are 632 * for the shorter hysteresis that happens after main - this is 0xa (.5 us) 633 */ 634 635 #define GMU_PWR_COL_HYST 0x000a1680 636 637 /* Set up the idle state for the GMU */ a6xx_gmu_power_config(struct a6xx_gmu * gmu)638 static void a6xx_gmu_power_config(struct a6xx_gmu *gmu) 639 { 640 /* Disable GMU WB/RB buffer */ 641 gmu_write(gmu, REG_A6XX_GMU_SYS_BUS_CONFIG, 0x1); 642 gmu_write(gmu, REG_A6XX_GMU_ICACHE_CONFIG, 0x1); 643 gmu_write(gmu, REG_A6XX_GMU_DCACHE_CONFIG, 0x1); 644 645 gmu_write(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0x9c40400); 646 647 switch (gmu->idle_level) { 648 case GMU_IDLE_STATE_IFPC: 649 gmu_write(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_HYST, 650 GMU_PWR_COL_HYST); 651 gmu_rmw(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0, 652 A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_IFPC_ENABLE | 653 A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_HM_POWER_COLLAPSE_ENABLE); 654 fallthrough; 655 case GMU_IDLE_STATE_SPTP: 656 gmu_write(gmu, REG_A6XX_GMU_PWR_COL_SPTPRAC_HYST, 657 GMU_PWR_COL_HYST); 658 gmu_rmw(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0, 659 A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_IFPC_ENABLE | 660 A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_SPTPRAC_POWER_CONTROL_ENABLE); 661 } 662 663 /* Enable RPMh GPU client */ 664 gmu_rmw(gmu, REG_A6XX_GMU_RPMH_CTRL, 0, 665 A6XX_GMU_RPMH_CTRL_RPMH_INTERFACE_ENABLE | 666 A6XX_GMU_RPMH_CTRL_LLC_VOTE_ENABLE | 667 A6XX_GMU_RPMH_CTRL_DDR_VOTE_ENABLE | 668 A6XX_GMU_RPMH_CTRL_MX_VOTE_ENABLE | 669 A6XX_GMU_RPMH_CTRL_CX_VOTE_ENABLE | 670 A6XX_GMU_RPMH_CTRL_GFX_VOTE_ENABLE); 671 } 672 673 struct block_header { 674 u32 addr; 675 u32 size; 676 u32 type; 677 u32 value; 678 u32 data[]; 679 }; 680 fw_block_mem(struct a6xx_gmu_bo * bo,const struct block_header * blk)681 static bool fw_block_mem(struct a6xx_gmu_bo *bo, const struct block_header *blk) 682 { 683 if (!in_range(blk->addr, bo->iova, bo->size)) 684 return false; 685 686 memcpy(bo->virt + blk->addr - bo->iova, blk->data, blk->size); 687 return true; 688 } 689 a6xx_gmu_fw_load(struct a6xx_gmu * gmu)690 static int a6xx_gmu_fw_load(struct a6xx_gmu *gmu) 691 { 692 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); 693 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 694 const struct firmware *fw_image = adreno_gpu->fw[ADRENO_FW_GMU]; 695 const struct block_header *blk; 696 u32 reg_offset; 697 698 u32 itcm_base = 0x00000000; 699 u32 dtcm_base = 0x00040000; 700 701 if (adreno_is_a650_family(adreno_gpu)) 702 dtcm_base = 0x10004000; 703 704 if (gmu->legacy) { 705 /* Sanity check the size of the firmware that was loaded */ 706 if (fw_image->size > 0x8000) { 707 DRM_DEV_ERROR(gmu->dev, 708 "GMU firmware is bigger than the available region\n"); 709 return -EINVAL; 710 } 711 712 gmu_write_bulk(gmu, REG_A6XX_GMU_CM3_ITCM_START, 713 (u32*) fw_image->data, fw_image->size); 714 return 0; 715 } 716 717 718 for (blk = (const struct block_header *) fw_image->data; 719 (const u8*) blk < fw_image->data + fw_image->size; 720 blk = (const struct block_header *) &blk->data[blk->size >> 2]) { 721 if (blk->size == 0) 722 continue; 723 724 if (in_range(blk->addr, itcm_base, SZ_16K)) { 725 reg_offset = (blk->addr - itcm_base) >> 2; 726 gmu_write_bulk(gmu, 727 REG_A6XX_GMU_CM3_ITCM_START + reg_offset, 728 blk->data, blk->size); 729 } else if (in_range(blk->addr, dtcm_base, SZ_16K)) { 730 reg_offset = (blk->addr - dtcm_base) >> 2; 731 gmu_write_bulk(gmu, 732 REG_A6XX_GMU_CM3_DTCM_START + reg_offset, 733 blk->data, blk->size); 734 } else if (!fw_block_mem(&gmu->icache, blk) && 735 !fw_block_mem(&gmu->dcache, blk) && 736 !fw_block_mem(&gmu->dummy, blk)) { 737 DRM_DEV_ERROR(gmu->dev, 738 "failed to match fw block (addr=%.8x size=%d data[0]=%.8x)\n", 739 blk->addr, blk->size, blk->data[0]); 740 } 741 } 742 743 return 0; 744 } 745 a6xx_gmu_fw_start(struct a6xx_gmu * gmu,unsigned int state)746 static int a6xx_gmu_fw_start(struct a6xx_gmu *gmu, unsigned int state) 747 { 748 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); 749 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 750 int ret; 751 u32 chipid; 752 753 if (adreno_is_a650_family(adreno_gpu)) { 754 gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_CX_FALNEXT_INTF, 1); 755 gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_CX_FAL_INTF, 1); 756 } 757 758 if (state == GMU_WARM_BOOT) { 759 ret = a6xx_rpmh_start(gmu); 760 if (ret) 761 return ret; 762 } else { 763 if (WARN(!adreno_gpu->fw[ADRENO_FW_GMU], 764 "GMU firmware is not loaded\n")) 765 return -ENOENT; 766 767 /* Turn on register retention */ 768 gmu_write(gmu, REG_A6XX_GMU_GENERAL_7, 1); 769 770 ret = a6xx_rpmh_start(gmu); 771 if (ret) 772 return ret; 773 774 ret = a6xx_gmu_fw_load(gmu); 775 if (ret) 776 return ret; 777 } 778 779 gmu_write(gmu, REG_A6XX_GMU_CM3_FW_INIT_RESULT, 0); 780 gmu_write(gmu, REG_A6XX_GMU_CM3_BOOT_CONFIG, 0x02); 781 782 /* Write the iova of the HFI table */ 783 gmu_write(gmu, REG_A6XX_GMU_HFI_QTBL_ADDR, gmu->hfi.iova); 784 gmu_write(gmu, REG_A6XX_GMU_HFI_QTBL_INFO, 1); 785 786 gmu_write(gmu, REG_A6XX_GMU_AHB_FENCE_RANGE_0, 787 (1 << 31) | (0xa << 18) | (0xa0)); 788 789 /* 790 * Snapshots toggle the NMI bit which will result in a jump to the NMI 791 * handler instead of __main. Set the M3 config value to avoid that. 792 */ 793 gmu_write(gmu, REG_A6XX_GMU_CM3_CFG, 0x4052); 794 795 /* 796 * Note that the GMU has a slightly different layout for 797 * chip_id, for whatever reason, so a bit of massaging 798 * is needed. The upper 16b are the same, but minor and 799 * patchid are packed in four bits each with the lower 800 * 8b unused: 801 */ 802 chipid = adreno_gpu->chip_id & 0xffff0000; 803 chipid |= (adreno_gpu->chip_id << 4) & 0xf000; /* minor */ 804 chipid |= (adreno_gpu->chip_id << 8) & 0x0f00; /* patchid */ 805 806 gmu_write(gmu, REG_A6XX_GMU_HFI_SFR_ADDR, chipid); 807 808 gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_PWR_COL_CP_MSG, 809 gmu->log.iova | (gmu->log.size / SZ_4K - 1)); 810 811 /* Set up the lowest idle level on the GMU */ 812 a6xx_gmu_power_config(gmu); 813 814 ret = a6xx_gmu_start(gmu); 815 if (ret) 816 return ret; 817 818 if (gmu->legacy) { 819 ret = a6xx_gmu_gfx_rail_on(gmu); 820 if (ret) 821 return ret; 822 } 823 824 /* Enable SPTP_PC if the CPU is responsible for it */ 825 if (gmu->idle_level < GMU_IDLE_STATE_SPTP) { 826 ret = a6xx_sptprac_enable(gmu); 827 if (ret) 828 return ret; 829 } 830 831 ret = a6xx_gmu_hfi_start(gmu); 832 if (ret) 833 return ret; 834 835 /* FIXME: Do we need this wmb() here? */ 836 wmb(); 837 838 return 0; 839 } 840 841 #define A6XX_HFI_IRQ_MASK \ 842 (A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT) 843 844 #define A6XX_GMU_IRQ_MASK \ 845 (A6XX_GMU_AO_HOST_INTERRUPT_STATUS_WDOG_BITE | \ 846 A6XX_GMU_AO_HOST_INTERRUPT_STATUS_HOST_AHB_BUS_ERROR | \ 847 A6XX_GMU_AO_HOST_INTERRUPT_STATUS_FENCE_ERR) 848 a6xx_gmu_irq_disable(struct a6xx_gmu * gmu)849 static void a6xx_gmu_irq_disable(struct a6xx_gmu *gmu) 850 { 851 disable_irq(gmu->gmu_irq); 852 disable_irq(gmu->hfi_irq); 853 854 gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_MASK, ~0); 855 gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK, ~0); 856 } 857 a6xx_gmu_rpmh_off(struct a6xx_gmu * gmu)858 static void a6xx_gmu_rpmh_off(struct a6xx_gmu *gmu) 859 { 860 u32 val; 861 862 /* Make sure there are no outstanding RPMh votes */ 863 gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS0_DRV0_STATUS, val, 864 (val & 1), 100, 10000); 865 gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS1_DRV0_STATUS, val, 866 (val & 1), 100, 10000); 867 gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS2_DRV0_STATUS, val, 868 (val & 1), 100, 10000); 869 gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS3_DRV0_STATUS, val, 870 (val & 1), 100, 1000); 871 } 872 873 /* Force the GMU off in case it isn't responsive */ a6xx_gmu_force_off(struct a6xx_gmu * gmu)874 static void a6xx_gmu_force_off(struct a6xx_gmu *gmu) 875 { 876 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); 877 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 878 struct msm_gpu *gpu = &adreno_gpu->base; 879 880 /* 881 * Turn off keep alive that might have been enabled by the hang 882 * interrupt 883 */ 884 gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_GMU_PWR_COL_KEEPALIVE, 0); 885 886 /* Flush all the queues */ 887 a6xx_hfi_stop(gmu); 888 889 /* Stop the interrupts */ 890 a6xx_gmu_irq_disable(gmu); 891 892 /* Force off SPTP in case the GMU is managing it */ 893 a6xx_sptprac_disable(gmu); 894 895 /* Make sure there are no outstanding RPMh votes */ 896 a6xx_gmu_rpmh_off(gmu); 897 898 /* Clear the WRITEDROPPED fields and put fence into allow mode */ 899 gmu_write(gmu, REG_A6XX_GMU_AHB_FENCE_STATUS_CLR, 0x7); 900 gmu_write(gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0); 901 902 /* Make sure the above writes go through */ 903 wmb(); 904 905 /* Halt the gmu cm3 core */ 906 gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 1); 907 908 a6xx_bus_clear_pending_transactions(adreno_gpu, true); 909 910 /* Reset GPU core blocks */ 911 a6xx_gpu_sw_reset(gpu, true); 912 } 913 a6xx_gmu_set_initial_freq(struct msm_gpu * gpu,struct a6xx_gmu * gmu)914 static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu) 915 { 916 struct dev_pm_opp *gpu_opp; 917 unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index]; 918 919 gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true); 920 if (IS_ERR(gpu_opp)) 921 return; 922 923 gmu->freq = 0; /* so a6xx_gmu_set_freq() doesn't exit early */ 924 a6xx_gmu_set_freq(gpu, gpu_opp, false); 925 dev_pm_opp_put(gpu_opp); 926 } 927 a6xx_gmu_set_initial_bw(struct msm_gpu * gpu,struct a6xx_gmu * gmu)928 static void a6xx_gmu_set_initial_bw(struct msm_gpu *gpu, struct a6xx_gmu *gmu) 929 { 930 struct dev_pm_opp *gpu_opp; 931 unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index]; 932 933 gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true); 934 if (IS_ERR(gpu_opp)) 935 return; 936 937 dev_pm_opp_set_opp(&gpu->pdev->dev, gpu_opp); 938 dev_pm_opp_put(gpu_opp); 939 } 940 a6xx_gmu_resume(struct a6xx_gpu * a6xx_gpu)941 int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu) 942 { 943 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 944 struct msm_gpu *gpu = &adreno_gpu->base; 945 struct a6xx_gmu *gmu = &a6xx_gpu->gmu; 946 int status, ret; 947 948 if (WARN(!gmu->initialized, "The GMU is not set up yet\n")) 949 return -EINVAL; 950 951 gmu->hung = false; 952 953 /* Turn on the resources */ 954 pm_runtime_get_sync(gmu->dev); 955 956 /* 957 * "enable" the GX power domain which won't actually do anything but it 958 * will make sure that the refcounting is correct in case we need to 959 * bring down the GX after a GMU failure 960 */ 961 if (!IS_ERR_OR_NULL(gmu->gxpd)) 962 pm_runtime_get_sync(gmu->gxpd); 963 964 /* Use a known rate to bring up the GMU */ 965 clk_set_rate(gmu->core_clk, 200000000); 966 clk_set_rate(gmu->hub_clk, 150000000); 967 ret = clk_bulk_prepare_enable(gmu->nr_clocks, gmu->clocks); 968 if (ret) { 969 pm_runtime_put(gmu->gxpd); 970 pm_runtime_put(gmu->dev); 971 return ret; 972 } 973 974 /* Set the bus quota to a reasonable value for boot */ 975 a6xx_gmu_set_initial_bw(gpu, gmu); 976 977 /* Enable the GMU interrupt */ 978 gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, ~0); 979 gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_MASK, ~A6XX_GMU_IRQ_MASK); 980 enable_irq(gmu->gmu_irq); 981 982 /* Check to see if we are doing a cold or warm boot */ 983 status = gmu_read(gmu, REG_A6XX_GMU_GENERAL_7) == 1 ? 984 GMU_WARM_BOOT : GMU_COLD_BOOT; 985 986 /* 987 * Warm boot path does not work on newer GPUs 988 * Presumably this is because icache/dcache regions must be restored 989 */ 990 if (!gmu->legacy) 991 status = GMU_COLD_BOOT; 992 993 ret = a6xx_gmu_fw_start(gmu, status); 994 if (ret) 995 goto out; 996 997 ret = a6xx_hfi_start(gmu, status); 998 if (ret) 999 goto out; 1000 1001 /* 1002 * Turn on the GMU firmware fault interrupt after we know the boot 1003 * sequence is successful 1004 */ 1005 gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, ~0); 1006 gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK, ~A6XX_HFI_IRQ_MASK); 1007 enable_irq(gmu->hfi_irq); 1008 1009 /* Set the GPU to the current freq */ 1010 a6xx_gmu_set_initial_freq(gpu, gmu); 1011 1012 out: 1013 /* On failure, shut down the GMU to leave it in a good state */ 1014 if (ret) { 1015 disable_irq(gmu->gmu_irq); 1016 a6xx_rpmh_stop(gmu); 1017 pm_runtime_put(gmu->gxpd); 1018 pm_runtime_put(gmu->dev); 1019 } 1020 1021 return ret; 1022 } 1023 a6xx_gmu_isidle(struct a6xx_gmu * gmu)1024 bool a6xx_gmu_isidle(struct a6xx_gmu *gmu) 1025 { 1026 u32 reg; 1027 1028 if (!gmu->initialized) 1029 return true; 1030 1031 reg = gmu_read(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS); 1032 1033 if (reg & A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS_GPUBUSYIGNAHB) 1034 return false; 1035 1036 return true; 1037 } 1038 1039 /* Gracefully try to shut down the GMU and by extension the GPU */ a6xx_gmu_shutdown(struct a6xx_gmu * gmu)1040 static void a6xx_gmu_shutdown(struct a6xx_gmu *gmu) 1041 { 1042 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); 1043 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 1044 u32 val; 1045 1046 /* 1047 * The GMU may still be in slumber unless the GPU started so check and 1048 * skip putting it back into slumber if so 1049 */ 1050 val = gmu_read(gmu, REG_A6XX_GPU_GMU_CX_GMU_RPMH_POWER_STATE); 1051 1052 if (val != 0xf) { 1053 int ret = a6xx_gmu_wait_for_idle(gmu); 1054 1055 /* If the GMU isn't responding assume it is hung */ 1056 if (ret) { 1057 a6xx_gmu_force_off(gmu); 1058 return; 1059 } 1060 1061 a6xx_bus_clear_pending_transactions(adreno_gpu, a6xx_gpu->hung); 1062 1063 /* tell the GMU we want to slumber */ 1064 ret = a6xx_gmu_notify_slumber(gmu); 1065 if (ret) { 1066 a6xx_gmu_force_off(gmu); 1067 return; 1068 } 1069 1070 ret = gmu_poll_timeout(gmu, 1071 REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS, val, 1072 !(val & A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS_GPUBUSYIGNAHB), 1073 100, 10000); 1074 1075 /* 1076 * Let the user know we failed to slumber but don't worry too 1077 * much because we are powering down anyway 1078 */ 1079 1080 if (ret) 1081 DRM_DEV_ERROR(gmu->dev, 1082 "Unable to slumber GMU: status = 0%x/0%x\n", 1083 gmu_read(gmu, 1084 REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS), 1085 gmu_read(gmu, 1086 REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS2)); 1087 } 1088 1089 /* Turn off HFI */ 1090 a6xx_hfi_stop(gmu); 1091 1092 /* Stop the interrupts and mask the hardware */ 1093 a6xx_gmu_irq_disable(gmu); 1094 1095 /* Tell RPMh to power off the GPU */ 1096 a6xx_rpmh_stop(gmu); 1097 } 1098 1099 a6xx_gmu_stop(struct a6xx_gpu * a6xx_gpu)1100 int a6xx_gmu_stop(struct a6xx_gpu *a6xx_gpu) 1101 { 1102 struct a6xx_gmu *gmu = &a6xx_gpu->gmu; 1103 struct msm_gpu *gpu = &a6xx_gpu->base.base; 1104 1105 if (!pm_runtime_active(gmu->dev)) 1106 return 0; 1107 1108 /* 1109 * Force the GMU off if we detected a hang, otherwise try to shut it 1110 * down gracefully 1111 */ 1112 if (gmu->hung) 1113 a6xx_gmu_force_off(gmu); 1114 else 1115 a6xx_gmu_shutdown(gmu); 1116 1117 /* Remove the bus vote */ 1118 dev_pm_opp_set_opp(&gpu->pdev->dev, NULL); 1119 1120 /* 1121 * Make sure the GX domain is off before turning off the GMU (CX) 1122 * domain. Usually the GMU does this but only if the shutdown sequence 1123 * was successful 1124 */ 1125 if (!IS_ERR_OR_NULL(gmu->gxpd)) 1126 pm_runtime_put_sync(gmu->gxpd); 1127 1128 clk_bulk_disable_unprepare(gmu->nr_clocks, gmu->clocks); 1129 1130 pm_runtime_put_sync(gmu->dev); 1131 1132 return 0; 1133 } 1134 a6xx_gmu_memory_free(struct a6xx_gmu * gmu)1135 static void a6xx_gmu_memory_free(struct a6xx_gmu *gmu) 1136 { 1137 msm_gem_kernel_put(gmu->hfi.obj, gmu->aspace); 1138 msm_gem_kernel_put(gmu->debug.obj, gmu->aspace); 1139 msm_gem_kernel_put(gmu->icache.obj, gmu->aspace); 1140 msm_gem_kernel_put(gmu->dcache.obj, gmu->aspace); 1141 msm_gem_kernel_put(gmu->dummy.obj, gmu->aspace); 1142 msm_gem_kernel_put(gmu->log.obj, gmu->aspace); 1143 1144 gmu->aspace->mmu->funcs->detach(gmu->aspace->mmu); 1145 msm_gem_address_space_put(gmu->aspace); 1146 } 1147 a6xx_gmu_memory_alloc(struct a6xx_gmu * gmu,struct a6xx_gmu_bo * bo,size_t size,u64 iova,const char * name)1148 static int a6xx_gmu_memory_alloc(struct a6xx_gmu *gmu, struct a6xx_gmu_bo *bo, 1149 size_t size, u64 iova, const char *name) 1150 { 1151 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); 1152 struct drm_device *dev = a6xx_gpu->base.base.dev; 1153 uint32_t flags = MSM_BO_WC; 1154 u64 range_start, range_end; 1155 int ret; 1156 1157 size = PAGE_ALIGN(size); 1158 if (!iova) { 1159 /* no fixed address - use GMU's uncached range */ 1160 range_start = 0x60000000 + PAGE_SIZE; /* skip dummy page */ 1161 range_end = 0x80000000; 1162 } else { 1163 /* range for fixed address */ 1164 range_start = iova; 1165 range_end = iova + size; 1166 /* use IOMMU_PRIV for icache/dcache */ 1167 flags |= MSM_BO_MAP_PRIV; 1168 } 1169 1170 bo->obj = msm_gem_new(dev, size, flags); 1171 if (IS_ERR(bo->obj)) 1172 return PTR_ERR(bo->obj); 1173 1174 ret = msm_gem_get_and_pin_iova_range(bo->obj, gmu->aspace, &bo->iova, 1175 range_start, range_end); 1176 if (ret) { 1177 drm_gem_object_put(bo->obj); 1178 return ret; 1179 } 1180 1181 bo->virt = msm_gem_get_vaddr(bo->obj); 1182 bo->size = size; 1183 1184 msm_gem_object_set_name(bo->obj, name); 1185 1186 return 0; 1187 } 1188 a6xx_gmu_memory_probe(struct a6xx_gmu * gmu)1189 static int a6xx_gmu_memory_probe(struct a6xx_gmu *gmu) 1190 { 1191 struct msm_mmu *mmu; 1192 1193 mmu = msm_iommu_new(gmu->dev, 0); 1194 if (!mmu) 1195 return -ENODEV; 1196 if (IS_ERR(mmu)) 1197 return PTR_ERR(mmu); 1198 1199 gmu->aspace = msm_gem_address_space_create(mmu, "gmu", 0x0, 0x80000000); 1200 if (IS_ERR(gmu->aspace)) 1201 return PTR_ERR(gmu->aspace); 1202 1203 return 0; 1204 } 1205 1206 /* Return the 'arc-level' for the given frequency */ a6xx_gmu_get_arc_level(struct device * dev,unsigned long freq)1207 static unsigned int a6xx_gmu_get_arc_level(struct device *dev, 1208 unsigned long freq) 1209 { 1210 struct dev_pm_opp *opp; 1211 unsigned int val; 1212 1213 if (!freq) 1214 return 0; 1215 1216 opp = dev_pm_opp_find_freq_exact(dev, freq, true); 1217 if (IS_ERR(opp)) 1218 return 0; 1219 1220 val = dev_pm_opp_get_level(opp); 1221 1222 dev_pm_opp_put(opp); 1223 1224 return val; 1225 } 1226 a6xx_gmu_rpmh_arc_votes_init(struct device * dev,u32 * votes,unsigned long * freqs,int freqs_count,const char * id)1227 static int a6xx_gmu_rpmh_arc_votes_init(struct device *dev, u32 *votes, 1228 unsigned long *freqs, int freqs_count, const char *id) 1229 { 1230 int i, j; 1231 const u16 *pri, *sec; 1232 size_t pri_count, sec_count; 1233 1234 pri = cmd_db_read_aux_data(id, &pri_count); 1235 if (IS_ERR(pri)) 1236 return PTR_ERR(pri); 1237 /* 1238 * The data comes back as an array of unsigned shorts so adjust the 1239 * count accordingly 1240 */ 1241 pri_count >>= 1; 1242 if (!pri_count) 1243 return -EINVAL; 1244 1245 sec = cmd_db_read_aux_data("mx.lvl", &sec_count); 1246 if (IS_ERR(sec)) 1247 return PTR_ERR(sec); 1248 1249 sec_count >>= 1; 1250 if (!sec_count) 1251 return -EINVAL; 1252 1253 /* Construct a vote for each frequency */ 1254 for (i = 0; i < freqs_count; i++) { 1255 u8 pindex = 0, sindex = 0; 1256 unsigned int level = a6xx_gmu_get_arc_level(dev, freqs[i]); 1257 1258 /* Get the primary index that matches the arc level */ 1259 for (j = 0; j < pri_count; j++) { 1260 if (pri[j] >= level) { 1261 pindex = j; 1262 break; 1263 } 1264 } 1265 1266 if (j == pri_count) { 1267 DRM_DEV_ERROR(dev, 1268 "Level %u not found in the RPMh list\n", 1269 level); 1270 DRM_DEV_ERROR(dev, "Available levels:\n"); 1271 for (j = 0; j < pri_count; j++) 1272 DRM_DEV_ERROR(dev, " %u\n", pri[j]); 1273 1274 return -EINVAL; 1275 } 1276 1277 /* 1278 * Look for a level in in the secondary list that matches. If 1279 * nothing fits, use the maximum non zero vote 1280 */ 1281 1282 for (j = 0; j < sec_count; j++) { 1283 if (sec[j] >= level) { 1284 sindex = j; 1285 break; 1286 } else if (sec[j]) { 1287 sindex = j; 1288 } 1289 } 1290 1291 /* Construct the vote */ 1292 votes[i] = ((pri[pindex] & 0xffff) << 16) | 1293 (sindex << 8) | pindex; 1294 } 1295 1296 return 0; 1297 } 1298 1299 /* 1300 * The GMU votes with the RPMh for itself and on behalf of the GPU but we need 1301 * to construct the list of votes on the CPU and send it over. Query the RPMh 1302 * voltage levels and build the votes 1303 */ 1304 a6xx_gmu_rpmh_votes_init(struct a6xx_gmu * gmu)1305 static int a6xx_gmu_rpmh_votes_init(struct a6xx_gmu *gmu) 1306 { 1307 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); 1308 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 1309 struct msm_gpu *gpu = &adreno_gpu->base; 1310 int ret; 1311 1312 /* Build the GX votes */ 1313 ret = a6xx_gmu_rpmh_arc_votes_init(&gpu->pdev->dev, gmu->gx_arc_votes, 1314 gmu->gpu_freqs, gmu->nr_gpu_freqs, "gfx.lvl"); 1315 1316 /* Build the CX votes */ 1317 ret |= a6xx_gmu_rpmh_arc_votes_init(gmu->dev, gmu->cx_arc_votes, 1318 gmu->gmu_freqs, gmu->nr_gmu_freqs, "cx.lvl"); 1319 1320 return ret; 1321 } 1322 a6xx_gmu_build_freq_table(struct device * dev,unsigned long * freqs,u32 size)1323 static int a6xx_gmu_build_freq_table(struct device *dev, unsigned long *freqs, 1324 u32 size) 1325 { 1326 int count = dev_pm_opp_get_opp_count(dev); 1327 struct dev_pm_opp *opp; 1328 int i, index = 0; 1329 unsigned long freq = 1; 1330 1331 /* 1332 * The OPP table doesn't contain the "off" frequency level so we need to 1333 * add 1 to the table size to account for it 1334 */ 1335 1336 if (WARN(count + 1 > size, 1337 "The GMU frequency table is being truncated\n")) 1338 count = size - 1; 1339 1340 /* Set the "off" frequency */ 1341 freqs[index++] = 0; 1342 1343 for (i = 0; i < count; i++) { 1344 opp = dev_pm_opp_find_freq_ceil(dev, &freq); 1345 if (IS_ERR(opp)) 1346 break; 1347 1348 dev_pm_opp_put(opp); 1349 freqs[index++] = freq++; 1350 } 1351 1352 return index; 1353 } 1354 a6xx_gmu_pwrlevels_probe(struct a6xx_gmu * gmu)1355 static int a6xx_gmu_pwrlevels_probe(struct a6xx_gmu *gmu) 1356 { 1357 struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); 1358 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 1359 struct msm_gpu *gpu = &adreno_gpu->base; 1360 1361 int ret = 0; 1362 1363 /* 1364 * The GMU handles its own frequency switching so build a list of 1365 * available frequencies to send during initialization 1366 */ 1367 ret = devm_pm_opp_of_add_table(gmu->dev); 1368 if (ret) { 1369 DRM_DEV_ERROR(gmu->dev, "Unable to set the OPP table for the GMU\n"); 1370 return ret; 1371 } 1372 1373 gmu->nr_gmu_freqs = a6xx_gmu_build_freq_table(gmu->dev, 1374 gmu->gmu_freqs, ARRAY_SIZE(gmu->gmu_freqs)); 1375 1376 /* 1377 * The GMU also handles GPU frequency switching so build a list 1378 * from the GPU OPP table 1379 */ 1380 gmu->nr_gpu_freqs = a6xx_gmu_build_freq_table(&gpu->pdev->dev, 1381 gmu->gpu_freqs, ARRAY_SIZE(gmu->gpu_freqs)); 1382 1383 gmu->current_perf_index = gmu->nr_gpu_freqs - 1; 1384 1385 /* Build the list of RPMh votes that we'll send to the GMU */ 1386 return a6xx_gmu_rpmh_votes_init(gmu); 1387 } 1388 a6xx_gmu_clocks_probe(struct a6xx_gmu * gmu)1389 static int a6xx_gmu_clocks_probe(struct a6xx_gmu *gmu) 1390 { 1391 int ret = devm_clk_bulk_get_all(gmu->dev, &gmu->clocks); 1392 1393 if (ret < 1) 1394 return ret; 1395 1396 gmu->nr_clocks = ret; 1397 1398 gmu->core_clk = msm_clk_bulk_get_clock(gmu->clocks, 1399 gmu->nr_clocks, "gmu"); 1400 1401 gmu->hub_clk = msm_clk_bulk_get_clock(gmu->clocks, 1402 gmu->nr_clocks, "hub"); 1403 1404 return 0; 1405 } 1406 a6xx_gmu_get_mmio(struct platform_device * pdev,const char * name)1407 static void __iomem *a6xx_gmu_get_mmio(struct platform_device *pdev, 1408 const char *name) 1409 { 1410 void __iomem *ret; 1411 struct resource *res = platform_get_resource_byname(pdev, 1412 IORESOURCE_MEM, name); 1413 1414 if (!res) { 1415 DRM_DEV_ERROR(&pdev->dev, "Unable to find the %s registers\n", name); 1416 return ERR_PTR(-EINVAL); 1417 } 1418 1419 ret = ioremap(res->start, resource_size(res)); 1420 if (!ret) { 1421 DRM_DEV_ERROR(&pdev->dev, "Unable to map the %s registers\n", name); 1422 return ERR_PTR(-EINVAL); 1423 } 1424 1425 return ret; 1426 } 1427 a6xx_gmu_get_irq(struct a6xx_gmu * gmu,struct platform_device * pdev,const char * name,irq_handler_t handler)1428 static int a6xx_gmu_get_irq(struct a6xx_gmu *gmu, struct platform_device *pdev, 1429 const char *name, irq_handler_t handler) 1430 { 1431 int irq, ret; 1432 1433 irq = platform_get_irq_byname(pdev, name); 1434 1435 ret = request_irq(irq, handler, IRQF_TRIGGER_HIGH | IRQF_NO_AUTOEN, name, gmu); 1436 if (ret) { 1437 DRM_DEV_ERROR(&pdev->dev, "Unable to get interrupt %s %d\n", 1438 name, ret); 1439 return ret; 1440 } 1441 1442 return irq; 1443 } 1444 a6xx_gmu_remove(struct a6xx_gpu * a6xx_gpu)1445 void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu) 1446 { 1447 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 1448 struct a6xx_gmu *gmu = &a6xx_gpu->gmu; 1449 struct platform_device *pdev = to_platform_device(gmu->dev); 1450 1451 mutex_lock(&gmu->lock); 1452 if (!gmu->initialized) { 1453 mutex_unlock(&gmu->lock); 1454 return; 1455 } 1456 1457 gmu->initialized = false; 1458 1459 mutex_unlock(&gmu->lock); 1460 1461 pm_runtime_force_suspend(gmu->dev); 1462 1463 /* 1464 * Since cxpd is a virt device, the devlink with gmu-dev will be removed 1465 * automatically when we do detach 1466 */ 1467 dev_pm_domain_detach(gmu->cxpd, false); 1468 1469 if (!IS_ERR_OR_NULL(gmu->gxpd)) { 1470 pm_runtime_disable(gmu->gxpd); 1471 dev_pm_domain_detach(gmu->gxpd, false); 1472 } 1473 1474 iounmap(gmu->mmio); 1475 if (platform_get_resource_byname(pdev, IORESOURCE_MEM, "rscc")) 1476 iounmap(gmu->rscc); 1477 gmu->mmio = NULL; 1478 gmu->rscc = NULL; 1479 1480 if (!adreno_has_gmu_wrapper(adreno_gpu)) { 1481 a6xx_gmu_memory_free(gmu); 1482 1483 free_irq(gmu->gmu_irq, gmu); 1484 free_irq(gmu->hfi_irq, gmu); 1485 } 1486 1487 /* Drop reference taken in of_find_device_by_node */ 1488 put_device(gmu->dev); 1489 } 1490 cxpd_notifier_cb(struct notifier_block * nb,unsigned long action,void * data)1491 static int cxpd_notifier_cb(struct notifier_block *nb, 1492 unsigned long action, void *data) 1493 { 1494 struct a6xx_gmu *gmu = container_of(nb, struct a6xx_gmu, pd_nb); 1495 1496 if (action == GENPD_NOTIFY_OFF) 1497 complete_all(&gmu->pd_gate); 1498 1499 return 0; 1500 } 1501 a6xx_gmu_wrapper_init(struct a6xx_gpu * a6xx_gpu,struct device_node * node)1502 int a6xx_gmu_wrapper_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) 1503 { 1504 struct platform_device *pdev = of_find_device_by_node(node); 1505 struct a6xx_gmu *gmu = &a6xx_gpu->gmu; 1506 int ret; 1507 1508 if (!pdev) 1509 return -ENODEV; 1510 1511 gmu->dev = &pdev->dev; 1512 1513 ret = of_dma_configure(gmu->dev, node, true); 1514 if (ret) 1515 return ret; 1516 1517 pm_runtime_enable(gmu->dev); 1518 1519 /* Mark legacy for manual SPTPRAC control */ 1520 gmu->legacy = true; 1521 1522 /* Map the GMU registers */ 1523 gmu->mmio = a6xx_gmu_get_mmio(pdev, "gmu"); 1524 if (IS_ERR(gmu->mmio)) { 1525 ret = PTR_ERR(gmu->mmio); 1526 goto err_mmio; 1527 } 1528 1529 gmu->cxpd = dev_pm_domain_attach_by_name(gmu->dev, "cx"); 1530 if (IS_ERR(gmu->cxpd)) { 1531 ret = PTR_ERR(gmu->cxpd); 1532 goto err_mmio; 1533 } 1534 1535 if (!device_link_add(gmu->dev, gmu->cxpd, DL_FLAG_PM_RUNTIME)) { 1536 ret = -ENODEV; 1537 goto detach_cxpd; 1538 } 1539 1540 init_completion(&gmu->pd_gate); 1541 complete_all(&gmu->pd_gate); 1542 gmu->pd_nb.notifier_call = cxpd_notifier_cb; 1543 1544 /* Get a link to the GX power domain to reset the GPU */ 1545 gmu->gxpd = dev_pm_domain_attach_by_name(gmu->dev, "gx"); 1546 if (IS_ERR(gmu->gxpd)) { 1547 ret = PTR_ERR(gmu->gxpd); 1548 goto err_mmio; 1549 } 1550 1551 gmu->initialized = true; 1552 1553 return 0; 1554 1555 detach_cxpd: 1556 dev_pm_domain_detach(gmu->cxpd, false); 1557 1558 err_mmio: 1559 iounmap(gmu->mmio); 1560 1561 /* Drop reference taken in of_find_device_by_node */ 1562 put_device(gmu->dev); 1563 1564 return ret; 1565 } 1566 a6xx_gmu_init(struct a6xx_gpu * a6xx_gpu,struct device_node * node)1567 int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) 1568 { 1569 struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; 1570 struct a6xx_gmu *gmu = &a6xx_gpu->gmu; 1571 struct platform_device *pdev = of_find_device_by_node(node); 1572 int ret; 1573 1574 if (!pdev) 1575 return -ENODEV; 1576 1577 gmu->dev = &pdev->dev; 1578 1579 ret = of_dma_configure(gmu->dev, node, true); 1580 if (ret) 1581 return ret; 1582 1583 /* Fow now, don't do anything fancy until we get our feet under us */ 1584 gmu->idle_level = GMU_IDLE_STATE_ACTIVE; 1585 1586 pm_runtime_enable(gmu->dev); 1587 1588 /* Get the list of clocks */ 1589 ret = a6xx_gmu_clocks_probe(gmu); 1590 if (ret) 1591 goto err_put_device; 1592 1593 ret = a6xx_gmu_memory_probe(gmu); 1594 if (ret) 1595 goto err_put_device; 1596 1597 1598 /* A660 now requires handling "prealloc requests" in GMU firmware 1599 * For now just hardcode allocations based on the known firmware. 1600 * note: there is no indication that these correspond to "dummy" or 1601 * "debug" regions, but this "guess" allows reusing these BOs which 1602 * are otherwise unused by a660. 1603 */ 1604 gmu->dummy.size = SZ_4K; 1605 if (adreno_is_a660_family(adreno_gpu)) { 1606 ret = a6xx_gmu_memory_alloc(gmu, &gmu->debug, SZ_4K * 7, 1607 0x60400000, "debug"); 1608 if (ret) 1609 goto err_memory; 1610 1611 gmu->dummy.size = SZ_8K; 1612 } 1613 1614 /* Allocate memory for the GMU dummy page */ 1615 ret = a6xx_gmu_memory_alloc(gmu, &gmu->dummy, gmu->dummy.size, 1616 0x60000000, "dummy"); 1617 if (ret) 1618 goto err_memory; 1619 1620 /* Note that a650 family also includes a660 family: */ 1621 if (adreno_is_a650_family(adreno_gpu)) { 1622 ret = a6xx_gmu_memory_alloc(gmu, &gmu->icache, 1623 SZ_16M - SZ_16K, 0x04000, "icache"); 1624 if (ret) 1625 goto err_memory; 1626 /* 1627 * NOTE: when porting legacy ("pre-650-family") GPUs you may be tempted to add a condition 1628 * to allocate icache/dcache here, as per downstream code flow, but it may not actually be 1629 * necessary. If you omit this step and you don't get random pagefaults, you are likely 1630 * good to go without this! 1631 */ 1632 } else if (adreno_is_a640_family(adreno_gpu)) { 1633 ret = a6xx_gmu_memory_alloc(gmu, &gmu->icache, 1634 SZ_256K - SZ_16K, 0x04000, "icache"); 1635 if (ret) 1636 goto err_memory; 1637 1638 ret = a6xx_gmu_memory_alloc(gmu, &gmu->dcache, 1639 SZ_256K - SZ_16K, 0x44000, "dcache"); 1640 if (ret) 1641 goto err_memory; 1642 } else if (adreno_is_a630_family(adreno_gpu)) { 1643 /* HFI v1, has sptprac */ 1644 gmu->legacy = true; 1645 1646 /* Allocate memory for the GMU debug region */ 1647 ret = a6xx_gmu_memory_alloc(gmu, &gmu->debug, SZ_16K, 0, "debug"); 1648 if (ret) 1649 goto err_memory; 1650 } 1651 1652 /* Allocate memory for the GMU log region */ 1653 ret = a6xx_gmu_memory_alloc(gmu, &gmu->log, SZ_16K, 0, "log"); 1654 if (ret) 1655 goto err_memory; 1656 1657 /* Allocate memory for for the HFI queues */ 1658 ret = a6xx_gmu_memory_alloc(gmu, &gmu->hfi, SZ_16K, 0, "hfi"); 1659 if (ret) 1660 goto err_memory; 1661 1662 /* Map the GMU registers */ 1663 gmu->mmio = a6xx_gmu_get_mmio(pdev, "gmu"); 1664 if (IS_ERR(gmu->mmio)) { 1665 ret = PTR_ERR(gmu->mmio); 1666 goto err_memory; 1667 } 1668 1669 if (adreno_is_a650_family(adreno_gpu)) { 1670 gmu->rscc = a6xx_gmu_get_mmio(pdev, "rscc"); 1671 if (IS_ERR(gmu->rscc)) { 1672 ret = -ENODEV; 1673 goto err_mmio; 1674 } 1675 } else { 1676 gmu->rscc = gmu->mmio + 0x23000; 1677 } 1678 1679 /* Get the HFI and GMU interrupts */ 1680 gmu->hfi_irq = a6xx_gmu_get_irq(gmu, pdev, "hfi", a6xx_hfi_irq); 1681 gmu->gmu_irq = a6xx_gmu_get_irq(gmu, pdev, "gmu", a6xx_gmu_irq); 1682 1683 if (gmu->hfi_irq < 0 || gmu->gmu_irq < 0) { 1684 ret = -ENODEV; 1685 goto err_mmio; 1686 } 1687 1688 gmu->cxpd = dev_pm_domain_attach_by_name(gmu->dev, "cx"); 1689 if (IS_ERR(gmu->cxpd)) { 1690 ret = PTR_ERR(gmu->cxpd); 1691 goto err_mmio; 1692 } 1693 1694 if (!device_link_add(gmu->dev, gmu->cxpd, 1695 DL_FLAG_PM_RUNTIME)) { 1696 ret = -ENODEV; 1697 goto detach_cxpd; 1698 } 1699 1700 init_completion(&gmu->pd_gate); 1701 complete_all(&gmu->pd_gate); 1702 gmu->pd_nb.notifier_call = cxpd_notifier_cb; 1703 1704 /* 1705 * Get a link to the GX power domain to reset the GPU in case of GMU 1706 * crash 1707 */ 1708 gmu->gxpd = dev_pm_domain_attach_by_name(gmu->dev, "gx"); 1709 1710 /* Get the power levels for the GMU and GPU */ 1711 a6xx_gmu_pwrlevels_probe(gmu); 1712 1713 /* Set up the HFI queues */ 1714 a6xx_hfi_init(gmu); 1715 1716 /* Initialize RPMh */ 1717 a6xx_gmu_rpmh_init(gmu); 1718 1719 gmu->initialized = true; 1720 1721 return 0; 1722 1723 detach_cxpd: 1724 dev_pm_domain_detach(gmu->cxpd, false); 1725 1726 err_mmio: 1727 iounmap(gmu->mmio); 1728 if (platform_get_resource_byname(pdev, IORESOURCE_MEM, "rscc")) 1729 iounmap(gmu->rscc); 1730 free_irq(gmu->gmu_irq, gmu); 1731 free_irq(gmu->hfi_irq, gmu); 1732 1733 err_memory: 1734 a6xx_gmu_memory_free(gmu); 1735 err_put_device: 1736 /* Drop reference taken in of_find_device_by_node */ 1737 put_device(gmu->dev); 1738 1739 return ret; 1740 } 1741