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] < 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 /* enable_intr field is only valid in ring0 */ 164 if (ih == &adev->irq.ih) 165 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, ENABLE_INTR, (enable ? 1 : 0)); 166 167 if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) { 168 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) 169 return -ETIMEDOUT; 170 } else { 171 WREG32(ih_regs->ih_rb_cntl, tmp); 172 } 173 174 if (enable) { 175 ih->enabled = true; 176 } else { 177 /* set rptr, wptr to 0 */ 178 WREG32(ih_regs->ih_rb_rptr, 0); 179 WREG32(ih_regs->ih_rb_wptr, 0); 180 ih->enabled = false; 181 ih->rptr = 0; 182 } 183 184 return 0; 185 } 186 187 /** 188 * navi10_ih_toggle_interrupts - Toggle all the available interrupt ring buffers 189 * 190 * @adev: amdgpu_device pointer 191 * @enable: enable or disable interrupt ring buffers 192 * 193 * Toggle all the available interrupt ring buffers (NAVI10). 194 */ 195 static int navi10_ih_toggle_interrupts(struct amdgpu_device *adev, bool enable) 196 { 197 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1, &adev->irq.ih2}; 198 int i; 199 int r; 200 201 for (i = 0; i < ARRAY_SIZE(ih); i++) { 202 if (ih[i]->ring_size) { 203 r = navi10_ih_toggle_ring_interrupts(adev, ih[i], enable); 204 if (r) 205 return r; 206 } 207 } 208 209 return 0; 210 } 211 212 static uint32_t navi10_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl) 213 { 214 int rb_bufsz = order_base_2(ih->ring_size / 4); 215 216 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 217 MC_SPACE, ih->use_bus_addr ? 1 : 4); 218 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 219 WPTR_OVERFLOW_CLEAR, 1); 220 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 221 WPTR_OVERFLOW_ENABLE, 1); 222 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz); 223 /* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register 224 * value is written to memory 225 */ 226 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, 227 WPTR_WRITEBACK_ENABLE, 1); 228 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SNOOP, 1); 229 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_RO, 0); 230 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0); 231 232 return ih_rb_cntl; 233 } 234 235 static uint32_t navi10_ih_doorbell_rptr(struct amdgpu_ih_ring *ih) 236 { 237 u32 ih_doorbell_rtpr = 0; 238 239 if (ih->use_doorbell) { 240 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, 241 IH_DOORBELL_RPTR, OFFSET, 242 ih->doorbell_index); 243 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, 244 IH_DOORBELL_RPTR, 245 ENABLE, 1); 246 } else { 247 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr, 248 IH_DOORBELL_RPTR, 249 ENABLE, 0); 250 } 251 return ih_doorbell_rtpr; 252 } 253 254 /** 255 * navi10_ih_enable_ring - enable an ih ring buffer 256 * 257 * @adev: amdgpu_device pointer 258 * @ih: amdgpu_ih_ring pointer 259 * 260 * Enable an ih ring buffer (NAVI10) 261 */ 262 static int navi10_ih_enable_ring(struct amdgpu_device *adev, 263 struct amdgpu_ih_ring *ih) 264 { 265 struct amdgpu_ih_regs *ih_regs; 266 uint32_t tmp; 267 268 ih_regs = &ih->ih_regs; 269 270 /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/ 271 WREG32(ih_regs->ih_rb_base, ih->gpu_addr >> 8); 272 WREG32(ih_regs->ih_rb_base_hi, (ih->gpu_addr >> 40) & 0xff); 273 274 tmp = RREG32(ih_regs->ih_rb_cntl); 275 tmp = navi10_ih_rb_cntl(ih, tmp); 276 if (ih == &adev->irq.ih) 277 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RPTR_REARM, !!adev->irq.msi_enabled); 278 if (ih == &adev->irq.ih1) { 279 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_ENABLE, 0); 280 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_FULL_DRAIN_ENABLE, 1); 281 } 282 283 if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) { 284 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) { 285 DRM_ERROR("PSP program IH_RB_CNTL failed!\n"); 286 return -ETIMEDOUT; 287 } 288 } else { 289 WREG32(ih_regs->ih_rb_cntl, tmp); 290 } 291 292 if (ih == &adev->irq.ih) { 293 /* set the ih ring 0 writeback address whether it's enabled or not */ 294 WREG32(ih_regs->ih_rb_wptr_addr_lo, lower_32_bits(ih->wptr_addr)); 295 WREG32(ih_regs->ih_rb_wptr_addr_hi, upper_32_bits(ih->wptr_addr) & 0xFFFF); 296 } 297 298 /* set rptr, wptr to 0 */ 299 WREG32(ih_regs->ih_rb_wptr, 0); 300 WREG32(ih_regs->ih_rb_rptr, 0); 301 302 WREG32(ih_regs->ih_doorbell_rptr, navi10_ih_doorbell_rptr(ih)); 303 304 return 0; 305 } 306 307 /** 308 * navi10_ih_irq_init - init and enable the interrupt ring 309 * 310 * @adev: amdgpu_device pointer 311 * 312 * Allocate a ring buffer for the interrupt controller, 313 * enable the RLC, disable interrupts, enable the IH 314 * ring buffer and enable it (NAVI). 315 * Called at device load and reume. 316 * Returns 0 for success, errors for failure. 317 */ 318 static int navi10_ih_irq_init(struct amdgpu_device *adev) 319 { 320 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1, &adev->irq.ih2}; 321 u32 ih_chicken; 322 u32 tmp; 323 int ret; 324 int i; 325 326 /* disable irqs */ 327 ret = navi10_ih_toggle_interrupts(adev, false); 328 if (ret) 329 return ret; 330 331 adev->nbio.funcs->ih_control(adev); 332 333 if (unlikely(adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT)) { 334 if (ih[0]->use_bus_addr) { 335 switch (adev->ip_versions[OSSSYS_HWIP]) { 336 case IP_VERSION(5, 0, 3): 337 case IP_VERSION(5, 2, 0): 338 case IP_VERSION(5, 2, 1): 339 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_Sienna_Cichlid); 340 ih_chicken = REG_SET_FIELD(ih_chicken, 341 IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1); 342 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_Sienna_Cichlid, ih_chicken); 343 break; 344 default: 345 ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN); 346 ih_chicken = REG_SET_FIELD(ih_chicken, 347 IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1); 348 WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN, ih_chicken); 349 break; 350 } 351 } 352 } 353 354 for (i = 0; i < ARRAY_SIZE(ih); i++) { 355 if (ih[i]->ring_size) { 356 ret = navi10_ih_enable_ring(adev, ih[i]); 357 if (ret) 358 return ret; 359 } 360 } 361 362 /* update doorbell range for ih ring 0*/ 363 adev->nbio.funcs->ih_doorbell_range(adev, ih[0]->use_doorbell, 364 ih[0]->doorbell_index); 365 366 tmp = RREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL); 367 tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL, 368 CLIENT18_IS_STORM_CLIENT, 1); 369 WREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL, tmp); 370 371 tmp = RREG32_SOC15(OSSSYS, 0, mmIH_INT_FLOOD_CNTL); 372 tmp = REG_SET_FIELD(tmp, IH_INT_FLOOD_CNTL, FLOOD_CNTL_ENABLE, 1); 373 WREG32_SOC15(OSSSYS, 0, mmIH_INT_FLOOD_CNTL, tmp); 374 375 pci_set_master(adev->pdev); 376 377 /* enable interrupts */ 378 ret = navi10_ih_toggle_interrupts(adev, true); 379 if (ret) 380 return ret; 381 /* enable wptr force update for self int */ 382 force_update_wptr_for_self_int(adev, 0, 8, true); 383 384 if (adev->irq.ih_soft.ring_size) 385 adev->irq.ih_soft.enabled = true; 386 387 return 0; 388 } 389 390 /** 391 * navi10_ih_irq_disable - disable interrupts 392 * 393 * @adev: amdgpu_device pointer 394 * 395 * Disable interrupts on the hw (NAVI10). 396 */ 397 static void navi10_ih_irq_disable(struct amdgpu_device *adev) 398 { 399 force_update_wptr_for_self_int(adev, 0, 8, false); 400 navi10_ih_toggle_interrupts(adev, false); 401 402 /* Wait and acknowledge irq */ 403 mdelay(1); 404 } 405 406 /** 407 * navi10_ih_get_wptr - get the IH ring buffer wptr 408 * 409 * @adev: amdgpu_device pointer 410 * @ih: IH ring buffer to fetch wptr 411 * 412 * Get the IH ring buffer wptr from either the register 413 * or the writeback memory buffer (NAVI10). Also check for 414 * ring buffer overflow and deal with it. 415 * Returns the value of the wptr. 416 */ 417 static u32 navi10_ih_get_wptr(struct amdgpu_device *adev, 418 struct amdgpu_ih_ring *ih) 419 { 420 u32 wptr, tmp; 421 struct amdgpu_ih_regs *ih_regs; 422 423 wptr = le32_to_cpu(*ih->wptr_cpu); 424 ih_regs = &ih->ih_regs; 425 426 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 427 goto out; 428 429 wptr = RREG32_NO_KIQ(ih_regs->ih_rb_wptr); 430 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 431 goto out; 432 wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); 433 434 /* When a ring buffer overflow happen start parsing interrupt 435 * from the last not overwritten vector (wptr + 32). Hopefully 436 * this should allow us to catch up. 437 */ 438 tmp = (wptr + 32) & ih->ptr_mask; 439 dev_warn(adev->dev, "IH ring buffer overflow " 440 "(0x%08X, 0x%08X, 0x%08X)\n", 441 wptr, ih->rptr, tmp); 442 ih->rptr = tmp; 443 444 tmp = RREG32_NO_KIQ(ih_regs->ih_rb_cntl); 445 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); 446 WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp); 447 out: 448 return (wptr & ih->ptr_mask); 449 } 450 451 /** 452 * navi10_ih_irq_rearm - rearm IRQ if lost 453 * 454 * @adev: amdgpu_device pointer 455 * @ih: IH ring to match 456 * 457 */ 458 static void navi10_ih_irq_rearm(struct amdgpu_device *adev, 459 struct amdgpu_ih_ring *ih) 460 { 461 uint32_t v = 0; 462 uint32_t i = 0; 463 struct amdgpu_ih_regs *ih_regs; 464 465 ih_regs = &ih->ih_regs; 466 467 /* Rearm IRQ / re-write doorbell if doorbell write is lost */ 468 for (i = 0; i < MAX_REARM_RETRY; i++) { 469 v = RREG32_NO_KIQ(ih_regs->ih_rb_rptr); 470 if ((v < ih->ring_size) && (v != ih->rptr)) 471 WDOORBELL32(ih->doorbell_index, ih->rptr); 472 else 473 break; 474 } 475 } 476 477 /** 478 * navi10_ih_set_rptr - set the IH ring buffer rptr 479 * 480 * @adev: amdgpu_device pointer 481 * 482 * @ih: IH ring buffer to set rptr 483 * Set the IH ring buffer rptr. 484 */ 485 static void navi10_ih_set_rptr(struct amdgpu_device *adev, 486 struct amdgpu_ih_ring *ih) 487 { 488 struct amdgpu_ih_regs *ih_regs; 489 490 if (ih->use_doorbell) { 491 /* XXX check if swapping is necessary on BE */ 492 *ih->rptr_cpu = ih->rptr; 493 WDOORBELL32(ih->doorbell_index, ih->rptr); 494 495 if (amdgpu_sriov_vf(adev)) 496 navi10_ih_irq_rearm(adev, ih); 497 } else { 498 ih_regs = &ih->ih_regs; 499 WREG32(ih_regs->ih_rb_rptr, ih->rptr); 500 } 501 } 502 503 /** 504 * navi10_ih_self_irq - dispatch work for ring 1 and 2 505 * 506 * @adev: amdgpu_device pointer 507 * @source: irq source 508 * @entry: IV with WPTR update 509 * 510 * Update the WPTR from the IV and schedule work to handle the entries. 511 */ 512 static int navi10_ih_self_irq(struct amdgpu_device *adev, 513 struct amdgpu_irq_src *source, 514 struct amdgpu_iv_entry *entry) 515 { 516 uint32_t wptr = cpu_to_le32(entry->src_data[0]); 517 518 switch (entry->ring_id) { 519 case 1: 520 *adev->irq.ih1.wptr_cpu = wptr; 521 schedule_work(&adev->irq.ih1_work); 522 break; 523 case 2: 524 *adev->irq.ih2.wptr_cpu = wptr; 525 schedule_work(&adev->irq.ih2_work); 526 break; 527 default: break; 528 } 529 return 0; 530 } 531 532 static const struct amdgpu_irq_src_funcs navi10_ih_self_irq_funcs = { 533 .process = navi10_ih_self_irq, 534 }; 535 536 static void navi10_ih_set_self_irq_funcs(struct amdgpu_device *adev) 537 { 538 adev->irq.self_irq.num_types = 0; 539 adev->irq.self_irq.funcs = &navi10_ih_self_irq_funcs; 540 } 541 542 static int navi10_ih_early_init(void *handle) 543 { 544 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 545 546 navi10_ih_set_interrupt_funcs(adev); 547 navi10_ih_set_self_irq_funcs(adev); 548 return 0; 549 } 550 551 static int navi10_ih_sw_init(void *handle) 552 { 553 int r; 554 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 555 bool use_bus_addr; 556 557 r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_IH, 0, 558 &adev->irq.self_irq); 559 560 if (r) 561 return r; 562 563 /* use gpu virtual address for ih ring 564 * until ih_checken is programmed to allow 565 * use bus address for ih ring by psp bl */ 566 if ((adev->flags & AMD_IS_APU) || 567 (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP)) 568 use_bus_addr = false; 569 else 570 use_bus_addr = true; 571 r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 256 * 1024, use_bus_addr); 572 if (r) 573 return r; 574 575 adev->irq.ih.use_doorbell = true; 576 adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1; 577 578 adev->irq.ih1.ring_size = 0; 579 adev->irq.ih2.ring_size = 0; 580 581 /* initialize ih control registers offset */ 582 navi10_ih_init_register_offset(adev); 583 584 r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, PAGE_SIZE, true); 585 if (r) 586 return r; 587 588 r = amdgpu_irq_init(adev); 589 590 return r; 591 } 592 593 static int navi10_ih_sw_fini(void *handle) 594 { 595 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 596 597 amdgpu_irq_fini_sw(adev); 598 599 return 0; 600 } 601 602 static int navi10_ih_hw_init(void *handle) 603 { 604 int r; 605 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 606 607 r = navi10_ih_irq_init(adev); 608 if (r) 609 return r; 610 611 return 0; 612 } 613 614 static int navi10_ih_hw_fini(void *handle) 615 { 616 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 617 618 navi10_ih_irq_disable(adev); 619 620 return 0; 621 } 622 623 static int navi10_ih_suspend(void *handle) 624 { 625 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 626 627 return navi10_ih_hw_fini(adev); 628 } 629 630 static int navi10_ih_resume(void *handle) 631 { 632 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 633 634 return navi10_ih_hw_init(adev); 635 } 636 637 static bool navi10_ih_is_idle(void *handle) 638 { 639 /* todo */ 640 return true; 641 } 642 643 static int navi10_ih_wait_for_idle(void *handle) 644 { 645 /* todo */ 646 return -ETIMEDOUT; 647 } 648 649 static int navi10_ih_soft_reset(void *handle) 650 { 651 /* todo */ 652 return 0; 653 } 654 655 static void navi10_ih_update_clockgating_state(struct amdgpu_device *adev, 656 bool enable) 657 { 658 uint32_t data, def, field_val; 659 660 if (adev->cg_flags & AMD_CG_SUPPORT_IH_CG) { 661 def = data = RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL); 662 field_val = enable ? 0 : 1; 663 data = REG_SET_FIELD(data, IH_CLK_CTRL, 664 DBUS_MUX_CLK_SOFT_OVERRIDE, field_val); 665 data = REG_SET_FIELD(data, IH_CLK_CTRL, 666 OSSSYS_SHARE_CLK_SOFT_OVERRIDE, field_val); 667 data = REG_SET_FIELD(data, IH_CLK_CTRL, 668 LIMIT_SMN_CLK_SOFT_OVERRIDE, field_val); 669 data = REG_SET_FIELD(data, IH_CLK_CTRL, 670 DYN_CLK_SOFT_OVERRIDE, field_val); 671 data = REG_SET_FIELD(data, IH_CLK_CTRL, 672 REG_CLK_SOFT_OVERRIDE, field_val); 673 if (def != data) 674 WREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL, data); 675 } 676 677 return; 678 } 679 680 static int navi10_ih_set_clockgating_state(void *handle, 681 enum amd_clockgating_state state) 682 { 683 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 684 685 navi10_ih_update_clockgating_state(adev, 686 state == AMD_CG_STATE_GATE); 687 return 0; 688 } 689 690 static int navi10_ih_set_powergating_state(void *handle, 691 enum amd_powergating_state state) 692 { 693 return 0; 694 } 695 696 static void navi10_ih_get_clockgating_state(void *handle, u32 *flags) 697 { 698 struct amdgpu_device *adev = (struct amdgpu_device *)handle; 699 700 if (!RREG32_SOC15(OSSSYS, 0, mmIH_CLK_CTRL)) 701 *flags |= AMD_CG_SUPPORT_IH_CG; 702 703 return; 704 } 705 706 static const struct amd_ip_funcs navi10_ih_ip_funcs = { 707 .name = "navi10_ih", 708 .early_init = navi10_ih_early_init, 709 .late_init = NULL, 710 .sw_init = navi10_ih_sw_init, 711 .sw_fini = navi10_ih_sw_fini, 712 .hw_init = navi10_ih_hw_init, 713 .hw_fini = navi10_ih_hw_fini, 714 .suspend = navi10_ih_suspend, 715 .resume = navi10_ih_resume, 716 .is_idle = navi10_ih_is_idle, 717 .wait_for_idle = navi10_ih_wait_for_idle, 718 .soft_reset = navi10_ih_soft_reset, 719 .set_clockgating_state = navi10_ih_set_clockgating_state, 720 .set_powergating_state = navi10_ih_set_powergating_state, 721 .get_clockgating_state = navi10_ih_get_clockgating_state, 722 }; 723 724 static const struct amdgpu_ih_funcs navi10_ih_funcs = { 725 .get_wptr = navi10_ih_get_wptr, 726 .decode_iv = amdgpu_ih_decode_iv_helper, 727 .set_rptr = navi10_ih_set_rptr 728 }; 729 730 static void navi10_ih_set_interrupt_funcs(struct amdgpu_device *adev) 731 { 732 if (adev->irq.ih_funcs == NULL) 733 adev->irq.ih_funcs = &navi10_ih_funcs; 734 } 735 736 const struct amdgpu_ip_block_version navi10_ih_ip_block = 737 { 738 .type = AMD_IP_BLOCK_TYPE_IH, 739 .major = 5, 740 .minor = 0, 741 .rev = 0, 742 .funcs = &navi10_ih_ip_funcs, 743 }; 744