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 (adev->ip_versions[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, WPTR_OVERFLOW_ENABLE, 0); 281 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_FULL_DRAIN_ENABLE, 1); 282 } 283 284 if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) { 285 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) { 286 DRM_ERROR("PSP program IH_RB_CNTL failed!\n"); 287 return -ETIMEDOUT; 288 } 289 } else { 290 WREG32(ih_regs->ih_rb_cntl, tmp); 291 } 292 293 if (ih == &adev->irq.ih) { 294 /* set the ih ring 0 writeback address whether it's enabled or not */ 295 WREG32(ih_regs->ih_rb_wptr_addr_lo, lower_32_bits(ih->wptr_addr)); 296 WREG32(ih_regs->ih_rb_wptr_addr_hi, upper_32_bits(ih->wptr_addr) & 0xFFFF); 297 } 298 299 /* set rptr, wptr to 0 */ 300 WREG32(ih_regs->ih_rb_wptr, 0); 301 WREG32(ih_regs->ih_rb_rptr, 0); 302 303 WREG32(ih_regs->ih_doorbell_rptr, navi10_ih_doorbell_rptr(ih)); 304 305 return 0; 306 } 307 308 /** 309 * navi10_ih_irq_init - init and enable the interrupt ring 310 * 311 * @adev: amdgpu_device pointer 312 * 313 * Allocate a ring buffer for the interrupt controller, 314 * enable the RLC, disable interrupts, enable the IH 315 * ring buffer and enable it (NAVI). 316 * Called at device load and reume. 317 * Returns 0 for success, errors for failure. 318 */ 319 static int navi10_ih_irq_init(struct amdgpu_device *adev) 320 { 321 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1, &adev->irq.ih2}; 322 u32 ih_chicken; 323 u32 tmp; 324 int ret; 325 int i; 326 327 /* disable irqs */ 328 ret = navi10_ih_toggle_interrupts(adev, false); 329 if (ret) 330 return ret; 331 332 adev->nbio.funcs->ih_control(adev); 333 334 if (unlikely(adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT)) { 335 if (ih[0]->use_bus_addr) { 336 switch (adev->ip_versions[OSSSYS_HWIP][0]) { 337 case IP_VERSION(5, 0, 3): 338 case IP_VERSION(5, 2, 0): 339 case IP_VERSION(5, 2, 1): 340 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_Sienna_Cichlid); 341 ih_chicken = REG_SET_FIELD(ih_chicken, 342 IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1); 343 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_Sienna_Cichlid, ih_chicken); 344 break; 345 default: 346 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN); 347 ih_chicken = REG_SET_FIELD(ih_chicken, 348 IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1); 349 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN, ih_chicken); 350 break; 351 } 352 } 353 } 354 355 for (i = 0; i < ARRAY_SIZE(ih); i++) { 356 if (ih[i]->ring_size) { 357 ret = navi10_ih_enable_ring(adev, ih[i]); 358 if (ret) 359 return ret; 360 } 361 } 362 363 /* update doorbell range for ih ring 0*/ 364 adev->nbio.funcs->ih_doorbell_range(adev, ih[0]->use_doorbell, 365 ih[0]->doorbell_index); 366 367 tmp = RREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL); 368 tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL, 369 CLIENT18_IS_STORM_CLIENT, 1); 370 WREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL, tmp); 371 372 tmp = RREG32_SOC15(OSSSYS, 0, mmIH_INT_FLOOD_CNTL); 373 tmp = REG_SET_FIELD(tmp, IH_INT_FLOOD_CNTL, FLOOD_CNTL_ENABLE, 1); 374 WREG32_SOC15(OSSSYS, 0, mmIH_INT_FLOOD_CNTL, tmp); 375 376 pci_set_master(adev->pdev); 377 378 /* enable interrupts */ 379 ret = navi10_ih_toggle_interrupts(adev, true); 380 if (ret) 381 return ret; 382 /* enable wptr force update for self int */ 383 force_update_wptr_for_self_int(adev, 0, 8, true); 384 385 if (adev->irq.ih_soft.ring_size) 386 adev->irq.ih_soft.enabled = true; 387 388 return 0; 389 } 390 391 /** 392 * navi10_ih_irq_disable - disable interrupts 393 * 394 * @adev: amdgpu_device pointer 395 * 396 * Disable interrupts on the hw (NAVI10). 397 */ 398 static void navi10_ih_irq_disable(struct amdgpu_device *adev) 399 { 400 force_update_wptr_for_self_int(adev, 0, 8, false); 401 navi10_ih_toggle_interrupts(adev, false); 402 403 /* Wait and acknowledge irq */ 404 mdelay(1); 405 } 406 407 /** 408 * navi10_ih_get_wptr - get the IH ring buffer wptr 409 * 410 * @adev: amdgpu_device pointer 411 * @ih: IH ring buffer to fetch wptr 412 * 413 * Get the IH ring buffer wptr from either the register 414 * or the writeback memory buffer (NAVI10). Also check for 415 * ring buffer overflow and deal with it. 416 * Returns the value of the wptr. 417 */ 418 static u32 navi10_ih_get_wptr(struct amdgpu_device *adev, 419 struct amdgpu_ih_ring *ih) 420 { 421 u32 wptr, tmp; 422 struct amdgpu_ih_regs *ih_regs; 423 424 wptr = le32_to_cpu(*ih->wptr_cpu); 425 ih_regs = &ih->ih_regs; 426 427 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 428 goto out; 429 430 wptr = RREG32_NO_KIQ(ih_regs->ih_rb_wptr); 431 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 432 goto out; 433 wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); 434 435 /* When a ring buffer overflow happen start parsing interrupt 436 * from the last not overwritten vector (wptr + 32). Hopefully 437 * this should allow us to catch up. 438 */ 439 tmp = (wptr + 32) & ih->ptr_mask; 440 dev_warn(adev->dev, "IH ring buffer overflow " 441 "(0x%08X, 0x%08X, 0x%08X)\n", 442 wptr, ih->rptr, tmp); 443 ih->rptr = tmp; 444 445 tmp = RREG32_NO_KIQ(ih_regs->ih_rb_cntl); 446 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); 447 WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp); 448 out: 449 return (wptr & ih->ptr_mask); 450 } 451 452 /** 453 * navi10_ih_irq_rearm - rearm IRQ if lost 454 * 455 * @adev: amdgpu_device pointer 456 * @ih: IH ring to match 457 * 458 */ 459 static void navi10_ih_irq_rearm(struct amdgpu_device *adev, 460 struct amdgpu_ih_ring *ih) 461 { 462 uint32_t v = 0; 463 uint32_t i = 0; 464 struct amdgpu_ih_regs *ih_regs; 465 466 ih_regs = &ih->ih_regs; 467 468 /* Rearm IRQ / re-write doorbell if doorbell write is lost */ 469 for (i = 0; i < MAX_REARM_RETRY; i++) { 470 v = RREG32_NO_KIQ(ih_regs->ih_rb_rptr); 471 if ((v < ih->ring_size) && (v != ih->rptr)) 472 WDOORBELL32(ih->doorbell_index, ih->rptr); 473 else 474 break; 475 } 476 } 477 478 /** 479 * navi10_ih_set_rptr - set the IH ring buffer rptr 480 * 481 * @adev: amdgpu_device pointer 482 * 483 * @ih: IH ring buffer to set rptr 484 * Set the IH ring buffer rptr. 485 */ 486 static void navi10_ih_set_rptr(struct amdgpu_device *adev, 487 struct amdgpu_ih_ring *ih) 488 { 489 struct amdgpu_ih_regs *ih_regs; 490 491 if (ih->use_doorbell) { 492 /* XXX check if swapping is necessary on BE */ 493 *ih->rptr_cpu = ih->rptr; 494 WDOORBELL32(ih->doorbell_index, ih->rptr); 495 496 if (amdgpu_sriov_vf(adev)) 497 navi10_ih_irq_rearm(adev, ih); 498 } else { 499 ih_regs = &ih->ih_regs; 500 WREG32(ih_regs->ih_rb_rptr, ih->rptr); 501 } 502 } 503 504 /** 505 * navi10_ih_self_irq - dispatch work for ring 1 and 2 506 * 507 * @adev: amdgpu_device pointer 508 * @source: irq source 509 * @entry: IV with WPTR update 510 * 511 * Update the WPTR from the IV and schedule work to handle the entries. 512 */ 513 static int navi10_ih_self_irq(struct amdgpu_device *adev, 514 struct amdgpu_irq_src *source, 515 struct amdgpu_iv_entry *entry) 516 { 517 uint32_t wptr = cpu_to_le32(entry->src_data[0]); 518 519 switch (entry->ring_id) { 520 case 1: 521 *adev->irq.ih1.wptr_cpu = wptr; 522 schedule_work(&adev->irq.ih1_work); 523 break; 524 case 2: 525 *adev->irq.ih2.wptr_cpu = wptr; 526 schedule_work(&adev->irq.ih2_work); 527 break; 528 default: break; 529 } 530 return 0; 531 } 532 533 static const struct amdgpu_irq_src_funcs navi10_ih_self_irq_funcs = { 534 .process = navi10_ih_self_irq, 535 }; 536 537 static void navi10_ih_set_self_irq_funcs(struct amdgpu_device *adev) 538 { 539 adev->irq.self_irq.num_types = 0; 540 adev->irq.self_irq.funcs = &navi10_ih_self_irq_funcs; 541 } 542 543 static int navi10_ih_early_init(void *handle) 544 { 545 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 546 547 navi10_ih_set_interrupt_funcs(adev); 548 navi10_ih_set_self_irq_funcs(adev); 549 return 0; 550 } 551 552 static int navi10_ih_sw_init(void *handle) 553 { 554 int r; 555 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 556 bool use_bus_addr; 557 558 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_IH, 0, 559 &adev->irq.self_irq); 560 561 if (r) 562 return r; 563 564 /* use gpu virtual address for ih ring 565 * until ih_checken is programmed to allow 566 * use bus address for ih ring by psp bl */ 567 if ((adev->flags & AMD_IS_APU) || 568 (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP)) 569 use_bus_addr = false; 570 else 571 use_bus_addr = true; 572 r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 256 * 1024, use_bus_addr); 573 if (r) 574 return r; 575 576 adev->irq.ih.use_doorbell = true; 577 adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1; 578 579 adev->irq.ih1.ring_size = 0; 580 adev->irq.ih2.ring_size = 0; 581 582 /* initialize ih control registers offset */ 583 navi10_ih_init_register_offset(adev); 584 585 r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, PAGE_SIZE, true); 586 if (r) 587 return r; 588 589 r = amdgpu_irq_init(adev); 590 591 return r; 592 } 593 594 static int navi10_ih_sw_fini(void *handle) 595 { 596 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 597 598 amdgpu_irq_fini_sw(adev); 599 600 return 0; 601 } 602 603 static int navi10_ih_hw_init(void *handle) 604 { 605 int r; 606 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 607 608 r = navi10_ih_irq_init(adev); 609 if (r) 610 return r; 611 612 return 0; 613 } 614 615 static int navi10_ih_hw_fini(void *handle) 616 { 617 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 618 619 navi10_ih_irq_disable(adev); 620 621 return 0; 622 } 623 624 static int navi10_ih_suspend(void *handle) 625 { 626 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 627 628 return navi10_ih_hw_fini(adev); 629 } 630 631 static int navi10_ih_resume(void *handle) 632 { 633 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 634 635 return navi10_ih_hw_init(adev); 636 } 637 638 static bool navi10_ih_is_idle(void *handle) 639 { 640 /* todo */ 641 return true; 642 } 643 644 static int navi10_ih_wait_for_idle(void *handle) 645 { 646 /* todo */ 647 return -ETIMEDOUT; 648 } 649 650 static int navi10_ih_soft_reset(void *handle) 651 { 652 /* todo */ 653 return 0; 654 } 655 656 static void navi10_ih_update_clockgating_state(struct amdgpu_device *adev, 657 bool enable) 658 { 659 uint32_t data, def, field_val; 660 661 if (adev->cg_flags & AMD_CG_SUPPORT_IH_CG) { 662 def = data = RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL); 663 field_val = enable ? 0 : 1; 664 data = REG_SET_FIELD(data, IH_CLK_CTRL, 665 DBUS_MUX_CLK_SOFT_OVERRIDE, field_val); 666 data = REG_SET_FIELD(data, IH_CLK_CTRL, 667 OSSSYS_SHARE_CLK_SOFT_OVERRIDE, field_val); 668 data = REG_SET_FIELD(data, IH_CLK_CTRL, 669 LIMIT_SMN_CLK_SOFT_OVERRIDE, field_val); 670 data = REG_SET_FIELD(data, IH_CLK_CTRL, 671 DYN_CLK_SOFT_OVERRIDE, field_val); 672 data = REG_SET_FIELD(data, IH_CLK_CTRL, 673 REG_CLK_SOFT_OVERRIDE, field_val); 674 if (def != data) 675 WREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL, data); 676 } 677 678 return; 679 } 680 681 static int navi10_ih_set_clockgating_state(void *handle, 682 enum amd_clockgating_state state) 683 { 684 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 685 686 navi10_ih_update_clockgating_state(adev, 687 state == AMD_CG_STATE_GATE); 688 return 0; 689 } 690 691 static int navi10_ih_set_powergating_state(void *handle, 692 enum amd_powergating_state state) 693 { 694 return 0; 695 } 696 697 static void navi10_ih_get_clockgating_state(void *handle, u32 *flags) 698 { 699 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 700 701 if (!RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL)) 702 *flags |= AMD_CG_SUPPORT_IH_CG; 703 704 return; 705 } 706 707 static const struct amd_ip_funcs navi10_ih_ip_funcs = { 708 .name = "navi10_ih", 709 .early_init = navi10_ih_early_init, 710 .late_init = NULL, 711 .sw_init = navi10_ih_sw_init, 712 .sw_fini = navi10_ih_sw_fini, 713 .hw_init = navi10_ih_hw_init, 714 .hw_fini = navi10_ih_hw_fini, 715 .suspend = navi10_ih_suspend, 716 .resume = navi10_ih_resume, 717 .is_idle = navi10_ih_is_idle, 718 .wait_for_idle = navi10_ih_wait_for_idle, 719 .soft_reset = navi10_ih_soft_reset, 720 .set_clockgating_state = navi10_ih_set_clockgating_state, 721 .set_powergating_state = navi10_ih_set_powergating_state, 722 .get_clockgating_state = navi10_ih_get_clockgating_state, 723 }; 724 725 static const struct amdgpu_ih_funcs navi10_ih_funcs = { 726 .get_wptr = navi10_ih_get_wptr, 727 .decode_iv = amdgpu_ih_decode_iv_helper, 728 .set_rptr = navi10_ih_set_rptr 729 }; 730 731 static void navi10_ih_set_interrupt_funcs(struct amdgpu_device *adev) 732 { 733 if (adev->irq.ih_funcs == NULL) 734 adev->irq.ih_funcs = &navi10_ih_funcs; 735 } 736 737 const struct amdgpu_ip_block_version navi10_ih_ip_block = 738 { 739 .type = AMD_IP_BLOCK_TYPE_IH, 740 .major = 5, 741 .minor = 0, 742 .rev = 0, 743 .funcs = &navi10_ih_ip_funcs, 744 }; 745