1 /* 2 * Copyright 2019 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 29 #include "oss/osssys_5_0_0_offset.h" 30 #include "oss/osssys_5_0_0_sh_mask.h" 31 32 #include "soc15_common.h" 33 #include "navi10_ih.h" 34 35 #define MAX_REARM_RETRY 10 36 37 #define mmIH_CHICKEN_Sienna_Cichlid 0x018d 38 #define mmIH_CHICKEN_Sienna_Cichlid_BASE_IDX 0 39 40 static void navi10_ih_set_interrupt_funcs(struct amdgpu_device *adev); 41 42 /** 43 * navi10_ih_init_register_offset - Initialize register offset for ih rings 44 * 45 * @adev: amdgpu_device pointer 46 * 47 * Initialize register offset ih rings (NAVI10). 48 */ 49 static void navi10_ih_init_register_offset(struct amdgpu_device *adev) 50 { 51 struct amdgpu_ih_regs *ih_regs; 52 53 if (adev->irq.ih.ring_size) { 54 ih_regs = &adev->irq.ih.ih_regs; 55 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE); 56 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI); 57 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL); 58 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR); 59 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR); 60 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR); 61 ih_regs->ih_rb_wptr_addr_lo = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_ADDR_LO); 62 ih_regs->ih_rb_wptr_addr_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_ADDR_HI); 63 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL; 64 } 65 66 if (adev->irq.ih1.ring_size) { 67 ih_regs = &adev->irq.ih1.ih_regs; 68 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_RING1); 69 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI_RING1); 70 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING1); 71 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING1); 72 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING1); 73 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING1); 74 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL_RING1; 75 } 76 77 if (adev->irq.ih2.ring_size) { 78 ih_regs = &adev->irq.ih2.ih_regs; 79 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_RING2); 80 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_BASE_HI_RING2); 81 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING2); 82 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING2); 83 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING2); 84 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING2); 85 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL_RING2; 86 } 87 } 88 89 /** 90 * force_update_wptr_for_self_int - Force update the wptr for self interrupt 91 * 92 * @adev: amdgpu_device pointer 93 * @threshold: threshold to trigger the wptr reporting 94 * @timeout: timeout to trigger the wptr reporting 95 * @enabled: Enable/disable timeout flush mechanism 96 * 97 * threshold input range: 0 ~ 15, default 0, 98 * real_threshold = 2^threshold 99 * timeout input range: 0 ~ 20, default 8, 100 * real_timeout = (2^timeout) * 1024 / (socclk_freq) 101 * 102 * Force update wptr for self interrupt ( >= SIENNA_CICHLID). 103 */ 104 static void 105 force_update_wptr_for_self_int(struct amdgpu_device *adev, 106 u32 threshold, u32 timeout, bool enabled) 107 { 108 u32 ih_cntl, ih_rb_cntl; 109 110 if (amdgpu_ip_version(adev, OSSSYS_HWIP, 0) < IP_VERSION(5, 0, 3)) 111 return; 112 113 ih_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_CNTL2); 114 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1); 115 116 ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL2, 117 SELF_IV_FORCE_WPTR_UPDATE_TIMEOUT, timeout); 118 ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL2, 119 SELF_IV_FORCE_WPTR_UPDATE_ENABLE, enabled); 120 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1, 121 RB_USED_INT_THRESHOLD, threshold); 122 123 if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) { 124 if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1, ih_rb_cntl)) 125 return; 126 } else { 127 WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl); 128 } 129 130 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2); 131 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2, 132 RB_USED_INT_THRESHOLD, threshold); 133 if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) { 134 if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2, ih_rb_cntl)) 135 return; 136 } else { 137 WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl); 138 } 139 140 WREG32_SOC15(OSSSYS, 0, mmIH_CNTL2, ih_cntl); 141 } 142 143 /** 144 * navi10_ih_toggle_ring_interrupts - toggle the interrupt ring buffer 145 * 146 * @adev: amdgpu_device pointer 147 * @ih: amdgpu_ih_ring pointet 148 * @enable: true - enable the interrupts, false - disable the interrupts 149 * 150 * Toggle the interrupt ring buffer (NAVI10) 151 */ 152 static int navi10_ih_toggle_ring_interrupts(struct amdgpu_device *adev, 153 struct amdgpu_ih_ring *ih, 154 bool enable) 155 { 156 struct amdgpu_ih_regs *ih_regs; 157 uint32_t tmp; 158 159 ih_regs = &ih->ih_regs; 160 161 tmp = RREG32(ih_regs->ih_rb_cntl); 162 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_ENABLE, (enable ? 1 : 0)); 163 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_GPU_TS_ENABLE, 1); 164 /* enable_intr field is only valid in ring0 */ 165 if (ih == &adev->irq.ih) 166 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, ENABLE_INTR, (enable ? 1 : 0)); 167 168 if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) { 169 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) 170 return -ETIMEDOUT; 171 } else { 172 WREG32(ih_regs->ih_rb_cntl, tmp); 173 } 174 175 if (enable) { 176 ih->enabled = true; 177 } else { 178 /* set rptr, wptr to 0 */ 179 WREG32(ih_regs->ih_rb_rptr, 0); 180 WREG32(ih_regs->ih_rb_wptr, 0); 181 ih->enabled = false; 182 ih->rptr = 0; 183 } 184 185 return 0; 186 } 187 188 /** 189 * navi10_ih_toggle_interrupts - Toggle all the available interrupt ring buffers 190 * 191 * @adev: amdgpu_device pointer 192 * @enable: enable or disable interrupt ring buffers 193 * 194 * Toggle all the available interrupt ring buffers (NAVI10). 195 */ 196 static int navi10_ih_toggle_interrupts(struct amdgpu_device *adev, bool enable) 197 { 198 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1, &adev->irq.ih2}; 199 int i; 200 int r; 201 202 for (i = 0; i < ARRAY_SIZE(ih); i++) { 203 if (ih[i]->ring_size) { 204 r = navi10_ih_toggle_ring_interrupts(adev, ih[i], enable); 205 if (r) 206 return r; 207 } 208 } 209 210 return 0; 211 } 212 213 static uint32_t navi10_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl) 214 { 215 int rb_bufsz = order_base_2(ih->ring_size / 4); 216 217 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 218 MC_SPACE, ih->use_bus_addr ? 1 : 4); 219 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 220 WPTR_OVERFLOW_CLEAR, 1); 221 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 222 WPTR_OVERFLOW_ENABLE, 1); 223 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz); 224 /* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register 225 * value is written to memory 226 */ 227 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 228 WPTR_WRITEBACK_ENABLE, 1); 229 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SNOOP, 1); 230 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_RO, 0); 231 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0); 232 233 return ih_rb_cntl; 234 } 235 236 static uint32_t navi10_ih_doorbell_rptr(struct amdgpu_ih_ring *ih) 237 { 238 u32 ih_doorbell_rtpr = 0; 239 240 if (ih->use_doorbell) { 241 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, 242 IH_DOORBELL_RPTR, OFFSET, 243 ih->doorbell_index); 244 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, 245 IH_DOORBELL_RPTR, 246 ENABLE, 1); 247 } else { 248 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, 249 IH_DOORBELL_RPTR, 250 ENABLE, 0); 251 } 252 return ih_doorbell_rtpr; 253 } 254 255 /** 256 * navi10_ih_enable_ring - enable an ih ring buffer 257 * 258 * @adev: amdgpu_device pointer 259 * @ih: amdgpu_ih_ring pointer 260 * 261 * Enable an ih ring buffer (NAVI10) 262 */ 263 static int navi10_ih_enable_ring(struct amdgpu_device *adev, 264 struct amdgpu_ih_ring *ih) 265 { 266 struct amdgpu_ih_regs *ih_regs; 267 uint32_t tmp; 268 269 ih_regs = &ih->ih_regs; 270 271 /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/ 272 WREG32(ih_regs->ih_rb_base, ih->gpu_addr >> 8); 273 WREG32(ih_regs->ih_rb_base_hi, (ih->gpu_addr >> 40) & 0xff); 274 275 tmp = RREG32(ih_regs->ih_rb_cntl); 276 tmp = navi10_ih_rb_cntl(ih, tmp); 277 if (ih == &adev->irq.ih) 278 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RPTR_REARM, !!adev->irq.msi_enabled); 279 if (ih == &adev->irq.ih1) 280 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_FULL_DRAIN_ENABLE, 1); 281 282 if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) { 283 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) { 284 DRM_ERROR("PSP program IH_RB_CNTL failed!\n"); 285 return -ETIMEDOUT; 286 } 287 } else { 288 WREG32(ih_regs->ih_rb_cntl, tmp); 289 } 290 291 if (ih == &adev->irq.ih) { 292 /* set the ih ring 0 writeback address whether it's enabled or not */ 293 WREG32(ih_regs->ih_rb_wptr_addr_lo, lower_32_bits(ih->wptr_addr)); 294 WREG32(ih_regs->ih_rb_wptr_addr_hi, upper_32_bits(ih->wptr_addr) & 0xFFFF); 295 } 296 297 /* set rptr, wptr to 0 */ 298 WREG32(ih_regs->ih_rb_wptr, 0); 299 WREG32(ih_regs->ih_rb_rptr, 0); 300 301 WREG32(ih_regs->ih_doorbell_rptr, navi10_ih_doorbell_rptr(ih)); 302 303 return 0; 304 } 305 306 /** 307 * navi10_ih_irq_init - init and enable the interrupt ring 308 * 309 * @adev: amdgpu_device pointer 310 * 311 * Allocate a ring buffer for the interrupt controller, 312 * enable the RLC, disable interrupts, enable the IH 313 * ring buffer and enable it (NAVI). 314 * Called at device load and reume. 315 * Returns 0 for success, errors for failure. 316 */ 317 static int navi10_ih_irq_init(struct amdgpu_device *adev) 318 { 319 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1, &adev->irq.ih2}; 320 u32 ih_chicken; 321 int ret; 322 int i; 323 324 /* disable irqs */ 325 ret = navi10_ih_toggle_interrupts(adev, false); 326 if (ret) 327 return ret; 328 329 adev->nbio.funcs->ih_control(adev); 330 331 if (unlikely(adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT)) { 332 if (ih[0]->use_bus_addr) { 333 switch (amdgpu_ip_version(adev, OSSSYS_HWIP, 0)) { 334 case IP_VERSION(5, 0, 3): 335 case IP_VERSION(5, 2, 0): 336 case IP_VERSION(5, 2, 1): 337 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_Sienna_Cichlid); 338 ih_chicken = REG_SET_FIELD(ih_chicken, 339 IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1); 340 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_Sienna_Cichlid, ih_chicken); 341 break; 342 default: 343 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN); 344 ih_chicken = REG_SET_FIELD(ih_chicken, 345 IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1); 346 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN, ih_chicken); 347 break; 348 } 349 } 350 } 351 352 for (i = 0; i < ARRAY_SIZE(ih); i++) { 353 if (ih[i]->ring_size) { 354 ret = navi10_ih_enable_ring(adev, ih[i]); 355 if (ret) 356 return ret; 357 } 358 } 359 360 /* update doorbell range for ih ring 0*/ 361 adev->nbio.funcs->ih_doorbell_range(adev, ih[0]->use_doorbell, 362 ih[0]->doorbell_index); 363 364 pci_set_master(adev->pdev); 365 366 /* enable interrupts */ 367 ret = navi10_ih_toggle_interrupts(adev, true); 368 if (ret) 369 return ret; 370 /* enable wptr force update for self int */ 371 force_update_wptr_for_self_int(adev, 0, 8, true); 372 373 if (adev->irq.ih_soft.ring_size) 374 adev->irq.ih_soft.enabled = true; 375 376 return 0; 377 } 378 379 /** 380 * navi10_ih_irq_disable - disable interrupts 381 * 382 * @adev: amdgpu_device pointer 383 * 384 * Disable interrupts on the hw (NAVI10). 385 */ 386 static void navi10_ih_irq_disable(struct amdgpu_device *adev) 387 { 388 force_update_wptr_for_self_int(adev, 0, 8, false); 389 navi10_ih_toggle_interrupts(adev, false); 390 391 /* Wait and acknowledge irq */ 392 mdelay(1); 393 } 394 395 /** 396 * navi10_ih_get_wptr - get the IH ring buffer wptr 397 * 398 * @adev: amdgpu_device pointer 399 * @ih: IH ring buffer to fetch wptr 400 * 401 * Get the IH ring buffer wptr from either the register 402 * or the writeback memory buffer (NAVI10). Also check for 403 * ring buffer overflow and deal with it. 404 * Returns the value of the wptr. 405 */ 406 static u32 navi10_ih_get_wptr(struct amdgpu_device *adev, 407 struct amdgpu_ih_ring *ih) 408 { 409 u32 wptr, tmp; 410 struct amdgpu_ih_regs *ih_regs; 411 412 if (ih == &adev->irq.ih || ih == &adev->irq.ih_soft) { 413 /* Only ring0 supports writeback. On other rings fall back 414 * to register-based code with overflow checking below. 415 * ih_soft ring doesn't have any backing hardware registers, 416 * update wptr and return. 417 */ 418 wptr = le32_to_cpu(*ih->wptr_cpu); 419 420 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 421 goto out; 422 } 423 424 ih_regs = &ih->ih_regs; 425 426 /* Double check that the overflow wasn't already cleared. */ 427 wptr = RREG32_NO_KIQ(ih_regs->ih_rb_wptr); 428 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 429 goto out; 430 wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); 431 432 /* When a ring buffer overflow happen start parsing interrupt 433 * from the last not overwritten vector (wptr + 32). Hopefully 434 * this should allow us to catch up. 435 */ 436 tmp = (wptr + 32) & ih->ptr_mask; 437 dev_warn(adev->dev, "IH ring buffer overflow " 438 "(0x%08X, 0x%08X, 0x%08X)\n", 439 wptr, ih->rptr, tmp); 440 ih->rptr = tmp; 441 442 tmp = RREG32_NO_KIQ(ih_regs->ih_rb_cntl); 443 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); 444 WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp); 445 446 /* Unset the CLEAR_OVERFLOW bit immediately so new overflows 447 * can be detected. 448 */ 449 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 0); 450 WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp); 451 out: 452 return (wptr & ih->ptr_mask); 453 } 454 455 /** 456 * navi10_ih_irq_rearm - rearm IRQ if lost 457 * 458 * @adev: amdgpu_device pointer 459 * @ih: IH ring to match 460 * 461 */ 462 static void navi10_ih_irq_rearm(struct amdgpu_device *adev, 463 struct amdgpu_ih_ring *ih) 464 { 465 uint32_t v = 0; 466 uint32_t i = 0; 467 struct amdgpu_ih_regs *ih_regs; 468 469 ih_regs = &ih->ih_regs; 470 471 /* Rearm IRQ / re-write doorbell if doorbell write is lost */ 472 for (i = 0; i < MAX_REARM_RETRY; i++) { 473 v = RREG32_NO_KIQ(ih_regs->ih_rb_rptr); 474 if ((v < ih->ring_size) && (v != ih->rptr)) 475 WDOORBELL32(ih->doorbell_index, ih->rptr); 476 else 477 break; 478 } 479 } 480 481 /** 482 * navi10_ih_set_rptr - set the IH ring buffer rptr 483 * 484 * @adev: amdgpu_device pointer 485 * 486 * @ih: IH ring buffer to set rptr 487 * Set the IH ring buffer rptr. 488 */ 489 static void navi10_ih_set_rptr(struct amdgpu_device *adev, 490 struct amdgpu_ih_ring *ih) 491 { 492 struct amdgpu_ih_regs *ih_regs; 493 494 if (ih == &adev->irq.ih_soft) 495 return; 496 497 if (ih->use_doorbell) { 498 /* XXX check if swapping is necessary on BE */ 499 *ih->rptr_cpu = ih->rptr; 500 WDOORBELL32(ih->doorbell_index, ih->rptr); 501 502 if (amdgpu_sriov_vf(adev)) 503 navi10_ih_irq_rearm(adev, ih); 504 } else { 505 ih_regs = &ih->ih_regs; 506 WREG32(ih_regs->ih_rb_rptr, ih->rptr); 507 } 508 } 509 510 /** 511 * navi10_ih_self_irq - dispatch work for ring 1 and 2 512 * 513 * @adev: amdgpu_device pointer 514 * @source: irq source 515 * @entry: IV with WPTR update 516 * 517 * Update the WPTR from the IV and schedule work to handle the entries. 518 */ 519 static int navi10_ih_self_irq(struct amdgpu_device *adev, 520 struct amdgpu_irq_src *source, 521 struct amdgpu_iv_entry *entry) 522 { 523 switch (entry->ring_id) { 524 case 1: 525 schedule_work(&adev->irq.ih1_work); 526 break; 527 case 2: 528 schedule_work(&adev->irq.ih2_work); 529 break; 530 default: break; 531 } 532 return 0; 533 } 534 535 static const struct amdgpu_irq_src_funcs navi10_ih_self_irq_funcs = { 536 .process = navi10_ih_self_irq, 537 }; 538 539 static void navi10_ih_set_self_irq_funcs(struct amdgpu_device *adev) 540 { 541 adev->irq.self_irq.num_types = 0; 542 adev->irq.self_irq.funcs = &navi10_ih_self_irq_funcs; 543 } 544 545 static int navi10_ih_early_init(void *handle) 546 { 547 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 548 549 navi10_ih_set_interrupt_funcs(adev); 550 navi10_ih_set_self_irq_funcs(adev); 551 return 0; 552 } 553 554 static int navi10_ih_sw_init(void *handle) 555 { 556 int r; 557 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 558 bool use_bus_addr; 559 560 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_IH, 0, 561 &adev->irq.self_irq); 562 563 if (r) 564 return r; 565 566 /* use gpu virtual address for ih ring 567 * until ih_checken is programmed to allow 568 * use bus address for ih ring by psp bl */ 569 if ((adev->flags & AMD_IS_APU) || 570 (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP)) 571 use_bus_addr = false; 572 else 573 use_bus_addr = true; 574 r = amdgpu_ih_ring_init(adev, &adev->irq.ih, IH_RING_SIZE, use_bus_addr); 575 if (r) 576 return r; 577 578 adev->irq.ih.use_doorbell = true; 579 adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1; 580 581 adev->irq.ih1.ring_size = 0; 582 adev->irq.ih2.ring_size = 0; 583 584 /* initialize ih control registers offset */ 585 navi10_ih_init_register_offset(adev); 586 587 r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, IH_SW_RING_SIZE, true); 588 if (r) 589 return r; 590 591 r = amdgpu_irq_init(adev); 592 593 return r; 594 } 595 596 static int navi10_ih_sw_fini(void *handle) 597 { 598 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 599 600 amdgpu_irq_fini_sw(adev); 601 602 return 0; 603 } 604 605 static int navi10_ih_hw_init(void *handle) 606 { 607 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 608 609 return navi10_ih_irq_init(adev); 610 } 611 612 static int navi10_ih_hw_fini(void *handle) 613 { 614 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 615 616 navi10_ih_irq_disable(adev); 617 618 return 0; 619 } 620 621 static int navi10_ih_suspend(void *handle) 622 { 623 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 624 625 return navi10_ih_hw_fini(adev); 626 } 627 628 static int navi10_ih_resume(void *handle) 629 { 630 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 631 632 return navi10_ih_hw_init(adev); 633 } 634 635 static bool navi10_ih_is_idle(void *handle) 636 { 637 /* todo */ 638 return true; 639 } 640 641 static int navi10_ih_wait_for_idle(void *handle) 642 { 643 /* todo */ 644 return -ETIMEDOUT; 645 } 646 647 static int navi10_ih_soft_reset(void *handle) 648 { 649 /* todo */ 650 return 0; 651 } 652 653 static void navi10_ih_update_clockgating_state(struct amdgpu_device *adev, 654 bool enable) 655 { 656 uint32_t data, def, field_val; 657 658 if (adev->cg_flags & AMD_CG_SUPPORT_IH_CG) { 659 def = data = RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL); 660 field_val = enable ? 0 : 1; 661 data = REG_SET_FIELD(data, IH_CLK_CTRL, 662 DBUS_MUX_CLK_SOFT_OVERRIDE, field_val); 663 data = REG_SET_FIELD(data, IH_CLK_CTRL, 664 OSSSYS_SHARE_CLK_SOFT_OVERRIDE, field_val); 665 data = REG_SET_FIELD(data, IH_CLK_CTRL, 666 LIMIT_SMN_CLK_SOFT_OVERRIDE, field_val); 667 data = REG_SET_FIELD(data, IH_CLK_CTRL, 668 DYN_CLK_SOFT_OVERRIDE, field_val); 669 data = REG_SET_FIELD(data, IH_CLK_CTRL, 670 REG_CLK_SOFT_OVERRIDE, field_val); 671 if (def != data) 672 WREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL, data); 673 } 674 } 675 676 static int navi10_ih_set_clockgating_state(void *handle, 677 enum amd_clockgating_state state) 678 { 679 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 680 681 navi10_ih_update_clockgating_state(adev, 682 state == AMD_CG_STATE_GATE); 683 return 0; 684 } 685 686 static int navi10_ih_set_powergating_state(void *handle, 687 enum amd_powergating_state state) 688 { 689 return 0; 690 } 691 692 static void navi10_ih_get_clockgating_state(void *handle, u64 *flags) 693 { 694 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 695 696 if (!RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL)) 697 *flags |= AMD_CG_SUPPORT_IH_CG; 698 } 699 700 static const struct amd_ip_funcs navi10_ih_ip_funcs = { 701 .name = "navi10_ih", 702 .early_init = navi10_ih_early_init, 703 .late_init = NULL, 704 .sw_init = navi10_ih_sw_init, 705 .sw_fini = navi10_ih_sw_fini, 706 .hw_init = navi10_ih_hw_init, 707 .hw_fini = navi10_ih_hw_fini, 708 .suspend = navi10_ih_suspend, 709 .resume = navi10_ih_resume, 710 .is_idle = navi10_ih_is_idle, 711 .wait_for_idle = navi10_ih_wait_for_idle, 712 .soft_reset = navi10_ih_soft_reset, 713 .set_clockgating_state = navi10_ih_set_clockgating_state, 714 .set_powergating_state = navi10_ih_set_powergating_state, 715 .get_clockgating_state = navi10_ih_get_clockgating_state, 716 }; 717 718 static const struct amdgpu_ih_funcs navi10_ih_funcs = { 719 .get_wptr = navi10_ih_get_wptr, 720 .decode_iv = amdgpu_ih_decode_iv_helper, 721 .decode_iv_ts = amdgpu_ih_decode_iv_ts_helper, 722 .set_rptr = navi10_ih_set_rptr 723 }; 724 725 static void navi10_ih_set_interrupt_funcs(struct amdgpu_device *adev) 726 { 727 if (adev->irq.ih_funcs == NULL) 728 adev->irq.ih_funcs = &navi10_ih_funcs; 729 } 730 731 const struct amdgpu_ip_block_version navi10_ih_ip_block = { 732 .type = AMD_IP_BLOCK_TYPE_IH, 733 .major = 5, 734 .minor = 0, 735 .rev = 0, 736 .funcs = &navi10_ih_ip_funcs, 737 }; 738