1 /* 2 * Copyright 2020 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 */ 23 24 #include <linux/pci.h> 25 26 #include "amdgpu.h" 27 #include "amdgpu_ih.h" 28 #include "soc15.h" 29 30 #include "oss/osssys_4_2_0_offset.h" 31 #include "oss/osssys_4_2_0_sh_mask.h" 32 33 #include "soc15_common.h" 34 #include "vega20_ih.h" 35 36 #define MAX_REARM_RETRY 10 37 38 #define mmIH_CHICKEN_ALDEBARAN 0x18d 39 #define mmIH_CHICKEN_ALDEBARAN_BASE_IDX 0 40 41 static void vega20_ih_set_interrupt_funcs(struct amdgpu_device *adev); 42 43 /** 44 * vega20_ih_init_register_offset - Initialize register offset for ih rings 45 * 46 * @adev: amdgpu_device pointer 47 * 48 * Initialize register offset ih rings (VEGA20). 49 */ 50 static void vega20_ih_init_register_offset(struct amdgpu_device *adev) 51 { 52 struct amdgpu_ih_regs *ih_regs; 53 54 if (adev->irq.ih.ring_size) { 55 ih_regs = &adev->irq.ih.ih_regs; 56 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE); 57 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI); 58 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL); 59 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR); 60 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR); 61 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR); 62 ih_regs->ih_rb_wptr_addr_lo = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_ADDR_LO); 63 ih_regs->ih_rb_wptr_addr_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_ADDR_HI); 64 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL; 65 } 66 67 if (adev->irq.ih1.ring_size) { 68 ih_regs = &adev->irq.ih1.ih_regs; 69 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_RING1); 70 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI_RING1); 71 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING1); 72 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING1); 73 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING1); 74 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING1); 75 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL_RING1; 76 } 77 78 if (adev->irq.ih2.ring_size) { 79 ih_regs = &adev->irq.ih2.ih_regs; 80 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_RING2); 81 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI_RING2); 82 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING2); 83 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING2); 84 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING2); 85 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING2); 86 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL_RING2; 87 } 88 } 89 90 /** 91 * vega20_ih_toggle_ring_interrupts - toggle the interrupt ring buffer 92 * 93 * @adev: amdgpu_device pointer 94 * @ih: amdgpu_ih_ring pointer 95 * @enable: true - enable the interrupts, false - disable the interrupts 96 * 97 * Toggle the interrupt ring buffer (VEGA20) 98 */ 99 static int vega20_ih_toggle_ring_interrupts(struct amdgpu_device *adev, 100 struct amdgpu_ih_ring *ih, 101 bool enable) 102 { 103 struct amdgpu_ih_regs *ih_regs; 104 uint32_t tmp; 105 106 ih_regs = &ih->ih_regs; 107 108 tmp = RREG32(ih_regs->ih_rb_cntl); 109 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_ENABLE, (enable ? 1 : 0)); 110 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_GPU_TS_ENABLE, 1); 111 112 /* enable_intr field is only valid in ring0 */ 113 if (ih == &adev->irq.ih) 114 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, ENABLE_INTR, (enable ? 1 : 0)); 115 if (amdgpu_sriov_vf(adev)) { 116 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) { 117 dev_err(adev->dev, "PSP program IH_RB_CNTL failed!\n"); 118 return -ETIMEDOUT; 119 } 120 } else { 121 WREG32(ih_regs->ih_rb_cntl, tmp); 122 } 123 124 if (enable) { 125 ih->enabled = true; 126 } else { 127 /* set rptr, wptr to 0 */ 128 WREG32(ih_regs->ih_rb_rptr, 0); 129 WREG32(ih_regs->ih_rb_wptr, 0); 130 ih->enabled = false; 131 ih->rptr = 0; 132 } 133 134 return 0; 135 } 136 137 /** 138 * vega20_ih_toggle_interrupts - Toggle all the available interrupt ring buffers 139 * 140 * @adev: amdgpu_device pointer 141 * @enable: enable or disable interrupt ring buffers 142 * 143 * Toggle all the available interrupt ring buffers (VEGA20). 144 */ 145 static int vega20_ih_toggle_interrupts(struct amdgpu_device *adev, bool enable) 146 { 147 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1, &adev->irq.ih2}; 148 int i; 149 int r; 150 151 for (i = 0; i < ARRAY_SIZE(ih); i++) { 152 if (ih[i]->ring_size) { 153 r = vega20_ih_toggle_ring_interrupts(adev, ih[i], enable); 154 if (r) 155 return r; 156 } 157 } 158 159 return 0; 160 } 161 162 static uint32_t vega20_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl) 163 { 164 int rb_bufsz = order_base_2(ih->ring_size / 4); 165 166 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 167 MC_SPACE, ih->use_bus_addr ? 1 : 4); 168 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 169 WPTR_OVERFLOW_CLEAR, 1); 170 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 171 WPTR_OVERFLOW_ENABLE, 1); 172 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz); 173 /* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register 174 * value is written to memory 175 */ 176 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 177 WPTR_WRITEBACK_ENABLE, 1); 178 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SNOOP, 1); 179 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_RO, 0); 180 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0); 181 182 return ih_rb_cntl; 183 } 184 185 static uint32_t vega20_ih_doorbell_rptr(struct amdgpu_ih_ring *ih) 186 { 187 u32 ih_doorbell_rtpr = 0; 188 189 if (ih->use_doorbell) { 190 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, 191 IH_DOORBELL_RPTR, OFFSET, 192 ih->doorbell_index); 193 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, 194 IH_DOORBELL_RPTR, 195 ENABLE, 1); 196 } else { 197 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, 198 IH_DOORBELL_RPTR, 199 ENABLE, 0); 200 } 201 return ih_doorbell_rtpr; 202 } 203 204 /** 205 * vega20_ih_enable_ring - enable an ih ring buffer 206 * 207 * @adev: amdgpu_device pointer 208 * @ih: amdgpu_ih_ring pointer 209 * 210 * Enable an ih ring buffer (VEGA20) 211 */ 212 static int vega20_ih_enable_ring(struct amdgpu_device *adev, 213 struct amdgpu_ih_ring *ih) 214 { 215 struct amdgpu_ih_regs *ih_regs; 216 uint32_t tmp; 217 218 ih_regs = &ih->ih_regs; 219 220 /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/ 221 WREG32(ih_regs->ih_rb_base, ih->gpu_addr >> 8); 222 WREG32(ih_regs->ih_rb_base_hi, (ih->gpu_addr >> 40) & 0xff); 223 224 tmp = RREG32(ih_regs->ih_rb_cntl); 225 tmp = vega20_ih_rb_cntl(ih, tmp); 226 if (ih == &adev->irq.ih) 227 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RPTR_REARM, !!adev->irq.msi_enabled); 228 if (ih == &adev->irq.ih1) 229 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_FULL_DRAIN_ENABLE, 1); 230 if (amdgpu_sriov_vf(adev)) { 231 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) { 232 dev_err(adev->dev, "PSP program IH_RB_CNTL failed!\n"); 233 return -ETIMEDOUT; 234 } 235 } else { 236 WREG32(ih_regs->ih_rb_cntl, tmp); 237 } 238 239 if (ih == &adev->irq.ih) { 240 /* set the ih ring 0 writeback address whether it's enabled or not */ 241 WREG32(ih_regs->ih_rb_wptr_addr_lo, lower_32_bits(ih->wptr_addr)); 242 WREG32(ih_regs->ih_rb_wptr_addr_hi, upper_32_bits(ih->wptr_addr) & 0xFFFF); 243 } 244 245 /* set rptr, wptr to 0 */ 246 WREG32(ih_regs->ih_rb_wptr, 0); 247 WREG32(ih_regs->ih_rb_rptr, 0); 248 249 WREG32(ih_regs->ih_doorbell_rptr, vega20_ih_doorbell_rptr(ih)); 250 251 return 0; 252 } 253 254 /** 255 * vega20_ih_reroute_ih - reroute VMC/UTCL2 ih to an ih ring 256 * 257 * @adev: amdgpu_device pointer 258 * 259 * Reroute VMC and UMC interrupts on primary ih ring to 260 * ih ring 1 so they won't lose when bunches of page faults 261 * interrupts overwhelms the interrupt handler(VEGA20) 262 */ 263 static void vega20_ih_reroute_ih(struct amdgpu_device *adev) 264 { 265 uint32_t tmp; 266 267 /* vega20 ih reroute will go through psp this 268 * function is used for newer asics starting arcturus 269 */ 270 if (adev->asic_type >= CHIP_ARCTURUS) { 271 /* Reroute to IH ring 1 for VMC */ 272 WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_INDEX, 0x12); 273 tmp = RREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA); 274 tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, CLIENT_TYPE, 1); 275 tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, RING_ID, 1); 276 WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA, tmp); 277 278 /* Reroute IH ring 1 for UTCL2 */ 279 WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_INDEX, 0x1B); 280 tmp = RREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA); 281 tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, RING_ID, 1); 282 WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA, tmp); 283 } 284 } 285 286 /** 287 * vega20_ih_irq_init - init and enable the interrupt ring 288 * 289 * @adev: amdgpu_device pointer 290 * 291 * Allocate a ring buffer for the interrupt controller, 292 * enable the RLC, disable interrupts, enable the IH 293 * ring buffer and enable it (VI). 294 * Called at device load and reume. 295 * Returns 0 for success, errors for failure. 296 */ 297 static int vega20_ih_irq_init(struct amdgpu_device *adev) 298 { 299 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1, &adev->irq.ih2}; 300 u32 ih_chicken; 301 int ret; 302 int i; 303 304 /* disable irqs */ 305 ret = vega20_ih_toggle_interrupts(adev, false); 306 if (ret) 307 return ret; 308 309 adev->nbio.funcs->ih_control(adev); 310 311 if (adev->asic_type == CHIP_ARCTURUS && 312 adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT) { 313 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN); 314 if (adev->irq.ih.use_bus_addr) { 315 ih_chicken = REG_SET_FIELD(ih_chicken, IH_CHICKEN, 316 MC_SPACE_GPA_ENABLE, 1); 317 } 318 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN, ih_chicken); 319 } 320 321 /* psp firmware won't program IH_CHICKEN for aldebaran 322 * driver needs to program it properly according to 323 * MC_SPACE type in IH_RB_CNTL */ 324 if (adev->asic_type == CHIP_ALDEBARAN) { 325 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_ALDEBARAN); 326 if (adev->irq.ih.use_bus_addr) { 327 ih_chicken = REG_SET_FIELD(ih_chicken, IH_CHICKEN, 328 MC_SPACE_GPA_ENABLE, 1); 329 } 330 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_ALDEBARAN, ih_chicken); 331 } 332 333 for (i = 0; i < ARRAY_SIZE(ih); i++) { 334 if (ih[i]->ring_size) { 335 if (i == 1) 336 vega20_ih_reroute_ih(adev); 337 ret = vega20_ih_enable_ring(adev, ih[i]); 338 if (ret) 339 return ret; 340 } 341 } 342 343 pci_set_master(adev->pdev); 344 345 /* enable interrupts */ 346 ret = vega20_ih_toggle_interrupts(adev, true); 347 if (ret) 348 return ret; 349 350 if (adev->irq.ih_soft.ring_size) 351 adev->irq.ih_soft.enabled = true; 352 353 return 0; 354 } 355 356 /** 357 * vega20_ih_irq_disable - disable interrupts 358 * 359 * @adev: amdgpu_device pointer 360 * 361 * Disable interrupts on the hw (VEGA20). 362 */ 363 static void vega20_ih_irq_disable(struct amdgpu_device *adev) 364 { 365 vega20_ih_toggle_interrupts(adev, false); 366 367 /* Wait and acknowledge irq */ 368 mdelay(1); 369 } 370 371 /** 372 * vega20_ih_get_wptr - get the IH ring buffer wptr 373 * 374 * @adev: amdgpu_device pointer 375 * @ih: amdgpu_ih_ring pointer 376 * 377 * Get the IH ring buffer wptr from either the register 378 * or the writeback memory buffer (VEGA20). Also check for 379 * ring buffer overflow and deal with it. 380 * Returns the value of the wptr. 381 */ 382 static u32 vega20_ih_get_wptr(struct amdgpu_device *adev, 383 struct amdgpu_ih_ring *ih) 384 { 385 u32 wptr, tmp; 386 struct amdgpu_ih_regs *ih_regs; 387 388 if (ih == &adev->irq.ih) { 389 /* Only ring0 supports writeback. On other rings fall back 390 * to register-based code with overflow checking below. 391 */ 392 wptr = le32_to_cpu(*ih->wptr_cpu); 393 394 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 395 goto out; 396 } 397 398 ih_regs = &ih->ih_regs; 399 400 /* Double check that the overflow wasn't already cleared. */ 401 wptr = RREG32_NO_KIQ(ih_regs->ih_rb_wptr); 402 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 403 goto out; 404 405 wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); 406 407 /* When a ring buffer overflow happen start parsing interrupt 408 * from the last not overwritten vector (wptr + 32). Hopefully 409 * this should allow us to catchup. 410 */ 411 tmp = (wptr + 32) & ih->ptr_mask; 412 dev_warn(adev->dev, "IH ring buffer overflow " 413 "(0x%08X, 0x%08X, 0x%08X)\n", 414 wptr, ih->rptr, tmp); 415 ih->rptr = tmp; 416 417 tmp = RREG32_NO_KIQ(ih_regs->ih_rb_cntl); 418 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); 419 WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp); 420 421 out: 422 return (wptr & ih->ptr_mask); 423 } 424 425 /** 426 * vega20_ih_irq_rearm - rearm IRQ if lost 427 * 428 * @adev: amdgpu_device pointer 429 * @ih: amdgpu_ih_ring pointer 430 * 431 */ 432 static void vega20_ih_irq_rearm(struct amdgpu_device *adev, 433 struct amdgpu_ih_ring *ih) 434 { 435 uint32_t v = 0; 436 uint32_t i = 0; 437 struct amdgpu_ih_regs *ih_regs; 438 439 ih_regs = &ih->ih_regs; 440 441 /* Rearm IRQ / re-wwrite doorbell if doorbell write is lost */ 442 for (i = 0; i < MAX_REARM_RETRY; i++) { 443 v = RREG32_NO_KIQ(ih_regs->ih_rb_rptr); 444 if ((v < ih->ring_size) && (v != ih->rptr)) 445 WDOORBELL32(ih->doorbell_index, ih->rptr); 446 else 447 break; 448 } 449 } 450 451 /** 452 * vega20_ih_set_rptr - set the IH ring buffer rptr 453 * 454 * @adev: amdgpu_device pointer 455 * @ih: amdgpu_ih_ring pointer 456 * 457 * Set the IH ring buffer rptr. 458 */ 459 static void vega20_ih_set_rptr(struct amdgpu_device *adev, 460 struct amdgpu_ih_ring *ih) 461 { 462 struct amdgpu_ih_regs *ih_regs; 463 464 if (ih->use_doorbell) { 465 /* XXX check if swapping is necessary on BE */ 466 *ih->rptr_cpu = ih->rptr; 467 WDOORBELL32(ih->doorbell_index, ih->rptr); 468 469 if (amdgpu_sriov_vf(adev)) 470 vega20_ih_irq_rearm(adev, ih); 471 } else { 472 ih_regs = &ih->ih_regs; 473 WREG32(ih_regs->ih_rb_rptr, ih->rptr); 474 } 475 } 476 477 /** 478 * vega20_ih_self_irq - dispatch work for ring 1 and 2 479 * 480 * @adev: amdgpu_device pointer 481 * @source: irq source 482 * @entry: IV with WPTR update 483 * 484 * Update the WPTR from the IV and schedule work to handle the entries. 485 */ 486 static int vega20_ih_self_irq(struct amdgpu_device *adev, 487 struct amdgpu_irq_src *source, 488 struct amdgpu_iv_entry *entry) 489 { 490 switch (entry->ring_id) { 491 case 1: 492 schedule_work(&adev->irq.ih1_work); 493 break; 494 case 2: 495 schedule_work(&adev->irq.ih2_work); 496 break; 497 default: break; 498 } 499 return 0; 500 } 501 502 static const struct amdgpu_irq_src_funcs vega20_ih_self_irq_funcs = { 503 .process = vega20_ih_self_irq, 504 }; 505 506 static void vega20_ih_set_self_irq_funcs(struct amdgpu_device *adev) 507 { 508 adev->irq.self_irq.num_types = 0; 509 adev->irq.self_irq.funcs = &vega20_ih_self_irq_funcs; 510 } 511 512 static int vega20_ih_early_init(void *handle) 513 { 514 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 515 516 vega20_ih_set_interrupt_funcs(adev); 517 vega20_ih_set_self_irq_funcs(adev); 518 return 0; 519 } 520 521 static int vega20_ih_sw_init(void *handle) 522 { 523 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 524 int r; 525 526 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_IH, 0, 527 &adev->irq.self_irq); 528 if (r) 529 return r; 530 531 r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 256 * 1024, true); 532 if (r) 533 return r; 534 535 adev->irq.ih.use_doorbell = true; 536 adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1; 537 538 r = amdgpu_ih_ring_init(adev, &adev->irq.ih1, PAGE_SIZE, true); 539 if (r) 540 return r; 541 542 adev->irq.ih1.use_doorbell = true; 543 adev->irq.ih1.doorbell_index = (adev->doorbell_index.ih + 1) << 1; 544 545 r = amdgpu_ih_ring_init(adev, &adev->irq.ih2, PAGE_SIZE, true); 546 if (r) 547 return r; 548 549 adev->irq.ih2.use_doorbell = true; 550 adev->irq.ih2.doorbell_index = (adev->doorbell_index.ih + 2) << 1; 551 552 /* initialize ih control registers offset */ 553 vega20_ih_init_register_offset(adev); 554 555 r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, PAGE_SIZE, true); 556 if (r) 557 return r; 558 559 r = amdgpu_irq_init(adev); 560 561 return r; 562 } 563 564 static int vega20_ih_sw_fini(void *handle) 565 { 566 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 567 568 amdgpu_irq_fini_sw(adev); 569 amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft); 570 amdgpu_ih_ring_fini(adev, &adev->irq.ih2); 571 amdgpu_ih_ring_fini(adev, &adev->irq.ih1); 572 amdgpu_ih_ring_fini(adev, &adev->irq.ih); 573 574 return 0; 575 } 576 577 static int vega20_ih_hw_init(void *handle) 578 { 579 int r; 580 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 581 582 r = vega20_ih_irq_init(adev); 583 if (r) 584 return r; 585 586 return 0; 587 } 588 589 static int vega20_ih_hw_fini(void *handle) 590 { 591 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 592 593 vega20_ih_irq_disable(adev); 594 595 return 0; 596 } 597 598 static int vega20_ih_suspend(void *handle) 599 { 600 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 601 602 return vega20_ih_hw_fini(adev); 603 } 604 605 static int vega20_ih_resume(void *handle) 606 { 607 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 608 609 return vega20_ih_hw_init(adev); 610 } 611 612 static bool vega20_ih_is_idle(void *handle) 613 { 614 /* todo */ 615 return true; 616 } 617 618 static int vega20_ih_wait_for_idle(void *handle) 619 { 620 /* todo */ 621 return -ETIMEDOUT; 622 } 623 624 static int vega20_ih_soft_reset(void *handle) 625 { 626 /* todo */ 627 628 return 0; 629 } 630 631 static void vega20_ih_update_clockgating_state(struct amdgpu_device *adev, 632 bool enable) 633 { 634 uint32_t data, def, field_val; 635 636 if (adev->cg_flags & AMD_CG_SUPPORT_IH_CG) { 637 def = data = RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL); 638 field_val = enable ? 0 : 1; 639 data = REG_SET_FIELD(data, IH_CLK_CTRL, 640 IH_RETRY_INT_CAM_MEM_CLK_SOFT_OVERRIDE, field_val); 641 data = REG_SET_FIELD(data, IH_CLK_CTRL, 642 IH_BUFFER_MEM_CLK_SOFT_OVERRIDE, field_val); 643 data = REG_SET_FIELD(data, IH_CLK_CTRL, 644 DBUS_MUX_CLK_SOFT_OVERRIDE, field_val); 645 data = REG_SET_FIELD(data, IH_CLK_CTRL, 646 OSSSYS_SHARE_CLK_SOFT_OVERRIDE, field_val); 647 data = REG_SET_FIELD(data, IH_CLK_CTRL, 648 LIMIT_SMN_CLK_SOFT_OVERRIDE, field_val); 649 data = REG_SET_FIELD(data, IH_CLK_CTRL, 650 DYN_CLK_SOFT_OVERRIDE, field_val); 651 data = REG_SET_FIELD(data, IH_CLK_CTRL, 652 REG_CLK_SOFT_OVERRIDE, field_val); 653 if (def != data) 654 WREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL, data); 655 } 656 } 657 658 static int vega20_ih_set_clockgating_state(void *handle, 659 enum amd_clockgating_state state) 660 { 661 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 662 663 vega20_ih_update_clockgating_state(adev, 664 state == AMD_CG_STATE_GATE); 665 return 0; 666 667 } 668 669 static int vega20_ih_set_powergating_state(void *handle, 670 enum amd_powergating_state state) 671 { 672 return 0; 673 } 674 675 const struct amd_ip_funcs vega20_ih_ip_funcs = { 676 .name = "vega20_ih", 677 .early_init = vega20_ih_early_init, 678 .late_init = NULL, 679 .sw_init = vega20_ih_sw_init, 680 .sw_fini = vega20_ih_sw_fini, 681 .hw_init = vega20_ih_hw_init, 682 .hw_fini = vega20_ih_hw_fini, 683 .suspend = vega20_ih_suspend, 684 .resume = vega20_ih_resume, 685 .is_idle = vega20_ih_is_idle, 686 .wait_for_idle = vega20_ih_wait_for_idle, 687 .soft_reset = vega20_ih_soft_reset, 688 .set_clockgating_state = vega20_ih_set_clockgating_state, 689 .set_powergating_state = vega20_ih_set_powergating_state, 690 }; 691 692 static const struct amdgpu_ih_funcs vega20_ih_funcs = { 693 .get_wptr = vega20_ih_get_wptr, 694 .decode_iv = amdgpu_ih_decode_iv_helper, 695 .set_rptr = vega20_ih_set_rptr 696 }; 697 698 static void vega20_ih_set_interrupt_funcs(struct amdgpu_device *adev) 699 { 700 adev->irq.ih_funcs = &vega20_ih_funcs; 701 } 702 703 const struct amdgpu_ip_block_version vega20_ih_ip_block = 704 { 705 .type = AMD_IP_BLOCK_TYPE_IH, 706 .major = 4, 707 .minor = 2, 708 .rev = 0, 709 .funcs = &vega20_ih_ip_funcs, 710 }; 711