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->ip_versions[OSSSYS_HWIP][0] >= IP_VERSION(4, 2, 1)) { 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->ip_versions[OSSSYS_HWIP][0] == IP_VERSION(4, 2, 1)) && 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->ip_versions[OSSSYS_HWIP][0] == IP_VERSION(4, 4, 0)) { 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 if (!amdgpu_sriov_vf(adev)) 344 adev->nbio.funcs->ih_doorbell_range(adev, adev->irq.ih.use_doorbell, 345 adev->irq.ih.doorbell_index); 346 347 pci_set_master(adev->pdev); 348 349 /* enable interrupts */ 350 ret = vega20_ih_toggle_interrupts(adev, true); 351 if (ret) 352 return ret; 353 354 if (adev->irq.ih_soft.ring_size) 355 adev->irq.ih_soft.enabled = true; 356 357 return 0; 358 } 359 360 /** 361 * vega20_ih_irq_disable - disable interrupts 362 * 363 * @adev: amdgpu_device pointer 364 * 365 * Disable interrupts on the hw (VEGA20). 366 */ 367 static void vega20_ih_irq_disable(struct amdgpu_device *adev) 368 { 369 vega20_ih_toggle_interrupts(adev, false); 370 371 /* Wait and acknowledge irq */ 372 mdelay(1); 373 } 374 375 /** 376 * vega20_ih_get_wptr - get the IH ring buffer wptr 377 * 378 * @adev: amdgpu_device pointer 379 * @ih: amdgpu_ih_ring pointer 380 * 381 * Get the IH ring buffer wptr from either the register 382 * or the writeback memory buffer (VEGA20). Also check for 383 * ring buffer overflow and deal with it. 384 * Returns the value of the wptr. 385 */ 386 static u32 vega20_ih_get_wptr(struct amdgpu_device *adev, 387 struct amdgpu_ih_ring *ih) 388 { 389 u32 wptr, tmp; 390 struct amdgpu_ih_regs *ih_regs; 391 392 if (ih == &adev->irq.ih || ih == &adev->irq.ih_soft) { 393 /* Only ring0 supports writeback. On other rings fall back 394 * to register-based code with overflow checking below. 395 * ih_soft ring doesn't have any backing hardware registers, 396 * update wptr and return. 397 */ 398 wptr = le32_to_cpu(*ih->wptr_cpu); 399 400 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 401 goto out; 402 } 403 404 ih_regs = &ih->ih_regs; 405 406 /* Double check that the overflow wasn't already cleared. */ 407 wptr = RREG32_NO_KIQ(ih_regs->ih_rb_wptr); 408 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 409 goto out; 410 411 wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); 412 413 /* When a ring buffer overflow happen start parsing interrupt 414 * from the last not overwritten vector (wptr + 32). Hopefully 415 * this should allow us to catchup. 416 */ 417 tmp = (wptr + 32) & ih->ptr_mask; 418 dev_warn(adev->dev, "IH ring buffer overflow " 419 "(0x%08X, 0x%08X, 0x%08X)\n", 420 wptr, ih->rptr, tmp); 421 ih->rptr = tmp; 422 423 tmp = RREG32_NO_KIQ(ih_regs->ih_rb_cntl); 424 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); 425 WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp); 426 427 out: 428 return (wptr & ih->ptr_mask); 429 } 430 431 /** 432 * vega20_ih_irq_rearm - rearm IRQ if lost 433 * 434 * @adev: amdgpu_device pointer 435 * @ih: amdgpu_ih_ring pointer 436 * 437 */ 438 static void vega20_ih_irq_rearm(struct amdgpu_device *adev, 439 struct amdgpu_ih_ring *ih) 440 { 441 uint32_t v = 0; 442 uint32_t i = 0; 443 struct amdgpu_ih_regs *ih_regs; 444 445 ih_regs = &ih->ih_regs; 446 447 /* Rearm IRQ / re-wwrite doorbell if doorbell write is lost */ 448 for (i = 0; i < MAX_REARM_RETRY; i++) { 449 v = RREG32_NO_KIQ(ih_regs->ih_rb_rptr); 450 if ((v < ih->ring_size) && (v != ih->rptr)) 451 WDOORBELL32(ih->doorbell_index, ih->rptr); 452 else 453 break; 454 } 455 } 456 457 /** 458 * vega20_ih_set_rptr - set the IH ring buffer rptr 459 * 460 * @adev: amdgpu_device pointer 461 * @ih: amdgpu_ih_ring pointer 462 * 463 * Set the IH ring buffer rptr. 464 */ 465 static void vega20_ih_set_rptr(struct amdgpu_device *adev, 466 struct amdgpu_ih_ring *ih) 467 { 468 struct amdgpu_ih_regs *ih_regs; 469 470 if (ih == &adev->irq.ih_soft) 471 return; 472 473 if (ih->use_doorbell) { 474 /* XXX check if swapping is necessary on BE */ 475 *ih->rptr_cpu = ih->rptr; 476 WDOORBELL32(ih->doorbell_index, ih->rptr); 477 478 if (amdgpu_sriov_vf(adev)) 479 vega20_ih_irq_rearm(adev, ih); 480 } else { 481 ih_regs = &ih->ih_regs; 482 WREG32(ih_regs->ih_rb_rptr, ih->rptr); 483 } 484 } 485 486 /** 487 * vega20_ih_self_irq - dispatch work for ring 1 and 2 488 * 489 * @adev: amdgpu_device pointer 490 * @source: irq source 491 * @entry: IV with WPTR update 492 * 493 * Update the WPTR from the IV and schedule work to handle the entries. 494 */ 495 static int vega20_ih_self_irq(struct amdgpu_device *adev, 496 struct amdgpu_irq_src *source, 497 struct amdgpu_iv_entry *entry) 498 { 499 switch (entry->ring_id) { 500 case 1: 501 schedule_work(&adev->irq.ih1_work); 502 break; 503 case 2: 504 schedule_work(&adev->irq.ih2_work); 505 break; 506 default: break; 507 } 508 return 0; 509 } 510 511 static const struct amdgpu_irq_src_funcs vega20_ih_self_irq_funcs = { 512 .process = vega20_ih_self_irq, 513 }; 514 515 static void vega20_ih_set_self_irq_funcs(struct amdgpu_device *adev) 516 { 517 adev->irq.self_irq.num_types = 0; 518 adev->irq.self_irq.funcs = &vega20_ih_self_irq_funcs; 519 } 520 521 static int vega20_ih_early_init(void *handle) 522 { 523 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 524 525 vega20_ih_set_interrupt_funcs(adev); 526 vega20_ih_set_self_irq_funcs(adev); 527 return 0; 528 } 529 530 static int vega20_ih_sw_init(void *handle) 531 { 532 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 533 int r; 534 535 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_IH, 0, 536 &adev->irq.self_irq); 537 if (r) 538 return r; 539 540 r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 256 * 1024, true); 541 if (r) 542 return r; 543 544 adev->irq.ih.use_doorbell = true; 545 adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1; 546 547 r = amdgpu_ih_ring_init(adev, &adev->irq.ih1, PAGE_SIZE, true); 548 if (r) 549 return r; 550 551 adev->irq.ih1.use_doorbell = true; 552 adev->irq.ih1.doorbell_index = (adev->doorbell_index.ih + 1) << 1; 553 554 r = amdgpu_ih_ring_init(adev, &adev->irq.ih2, PAGE_SIZE, true); 555 if (r) 556 return r; 557 558 adev->irq.ih2.use_doorbell = true; 559 adev->irq.ih2.doorbell_index = (adev->doorbell_index.ih + 2) << 1; 560 561 /* initialize ih control registers offset */ 562 vega20_ih_init_register_offset(adev); 563 564 r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, PAGE_SIZE, true); 565 if (r) 566 return r; 567 568 r = amdgpu_irq_init(adev); 569 570 return r; 571 } 572 573 static int vega20_ih_sw_fini(void *handle) 574 { 575 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 576 577 amdgpu_irq_fini_sw(adev); 578 579 return 0; 580 } 581 582 static int vega20_ih_hw_init(void *handle) 583 { 584 int r; 585 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 586 587 r = vega20_ih_irq_init(adev); 588 if (r) 589 return r; 590 591 return 0; 592 } 593 594 static int vega20_ih_hw_fini(void *handle) 595 { 596 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 597 598 vega20_ih_irq_disable(adev); 599 600 return 0; 601 } 602 603 static int vega20_ih_suspend(void *handle) 604 { 605 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 606 607 return vega20_ih_hw_fini(adev); 608 } 609 610 static int vega20_ih_resume(void *handle) 611 { 612 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 613 614 return vega20_ih_hw_init(adev); 615 } 616 617 static bool vega20_ih_is_idle(void *handle) 618 { 619 /* todo */ 620 return true; 621 } 622 623 static int vega20_ih_wait_for_idle(void *handle) 624 { 625 /* todo */ 626 return -ETIMEDOUT; 627 } 628 629 static int vega20_ih_soft_reset(void *handle) 630 { 631 /* todo */ 632 633 return 0; 634 } 635 636 static void vega20_ih_update_clockgating_state(struct amdgpu_device *adev, 637 bool enable) 638 { 639 uint32_t data, def, field_val; 640 641 if (adev->cg_flags & AMD_CG_SUPPORT_IH_CG) { 642 def = data = RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL); 643 field_val = enable ? 0 : 1; 644 data = REG_SET_FIELD(data, IH_CLK_CTRL, 645 IH_RETRY_INT_CAM_MEM_CLK_SOFT_OVERRIDE, field_val); 646 data = REG_SET_FIELD(data, IH_CLK_CTRL, 647 IH_BUFFER_MEM_CLK_SOFT_OVERRIDE, field_val); 648 data = REG_SET_FIELD(data, IH_CLK_CTRL, 649 DBUS_MUX_CLK_SOFT_OVERRIDE, field_val); 650 data = REG_SET_FIELD(data, IH_CLK_CTRL, 651 OSSSYS_SHARE_CLK_SOFT_OVERRIDE, field_val); 652 data = REG_SET_FIELD(data, IH_CLK_CTRL, 653 LIMIT_SMN_CLK_SOFT_OVERRIDE, field_val); 654 data = REG_SET_FIELD(data, IH_CLK_CTRL, 655 DYN_CLK_SOFT_OVERRIDE, field_val); 656 data = REG_SET_FIELD(data, IH_CLK_CTRL, 657 REG_CLK_SOFT_OVERRIDE, field_val); 658 if (def != data) 659 WREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL, data); 660 } 661 } 662 663 static int vega20_ih_set_clockgating_state(void *handle, 664 enum amd_clockgating_state state) 665 { 666 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 667 668 vega20_ih_update_clockgating_state(adev, 669 state == AMD_CG_STATE_GATE); 670 return 0; 671 672 } 673 674 static int vega20_ih_set_powergating_state(void *handle, 675 enum amd_powergating_state state) 676 { 677 return 0; 678 } 679 680 const struct amd_ip_funcs vega20_ih_ip_funcs = { 681 .name = "vega20_ih", 682 .early_init = vega20_ih_early_init, 683 .late_init = NULL, 684 .sw_init = vega20_ih_sw_init, 685 .sw_fini = vega20_ih_sw_fini, 686 .hw_init = vega20_ih_hw_init, 687 .hw_fini = vega20_ih_hw_fini, 688 .suspend = vega20_ih_suspend, 689 .resume = vega20_ih_resume, 690 .is_idle = vega20_ih_is_idle, 691 .wait_for_idle = vega20_ih_wait_for_idle, 692 .soft_reset = vega20_ih_soft_reset, 693 .set_clockgating_state = vega20_ih_set_clockgating_state, 694 .set_powergating_state = vega20_ih_set_powergating_state, 695 }; 696 697 static const struct amdgpu_ih_funcs vega20_ih_funcs = { 698 .get_wptr = vega20_ih_get_wptr, 699 .decode_iv = amdgpu_ih_decode_iv_helper, 700 .decode_iv_ts = amdgpu_ih_decode_iv_ts_helper, 701 .set_rptr = vega20_ih_set_rptr 702 }; 703 704 static void vega20_ih_set_interrupt_funcs(struct amdgpu_device *adev) 705 { 706 adev->irq.ih_funcs = &vega20_ih_funcs; 707 } 708 709 const struct amdgpu_ip_block_version vega20_ih_ip_block = 710 { 711 .type = AMD_IP_BLOCK_TYPE_IH, 712 .major = 4, 713 .minor = 2, 714 .rev = 0, 715 .funcs = &vega20_ih_ip_funcs, 716 }; 717