tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 46d4e2eb58e14c8935fa0e27d16d4c62ef82849a commit: 12443fc53e7d7fad52cb4b534dea6be525d05d62 [6193/6424] drm/amdgpu: Add ih v7_0 ip block support config: arm-randconfig-001-20240213 (https://download.01.org/0day-ci/archive/20240213/202402131939.ajKHyCog-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240213/202402131939.ajKHyCog-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202402131939.ajKHyCog-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/amd/amdgpu/ih_v7_0.c:392: warning: Function parameter or struct member 'ih' not described in 'ih_v7_0_get_wptr' >> drivers/gpu/drm/amd/amdgpu/ih_v7_0.c:432: warning: Function parameter or struct member 'ih' not described in 'ih_v7_0_irq_rearm' >> drivers/gpu/drm/amd/amdgpu/ih_v7_0.c:458: warning: Function parameter or struct member 'ih' not described in 'ih_v7_0_set_rptr' vim +392 drivers/gpu/drm/amd/amdgpu/ih_v7_0.c 379 380 /** 381 * ih_v7_0_get_wptr - get the IH ring buffer wptr 382 * 383 * @adev: amdgpu_device pointer 384 * 385 * Get the IH ring buffer wptr from either the register 386 * or the writeback memory buffer. Also check for 387 * ring buffer overflow and deal with it. 388 * Returns the value of the wptr. 389 */ 390 static u32 ih_v7_0_get_wptr(struct amdgpu_device *adev, 391 struct amdgpu_ih_ring *ih) > 392 { 393 u32 wptr, tmp; 394 struct amdgpu_ih_regs *ih_regs; 395 396 wptr = le32_to_cpu(*ih->wptr_cpu); 397 ih_regs = &ih->ih_regs; 398 399 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 400 goto out; 401 402 wptr = RREG32_NO_KIQ(ih_regs->ih_rb_wptr); 403 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) 404 goto out; 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 catch up. 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 out: 421 return (wptr & ih->ptr_mask); 422 } 423 424 /** 425 * ih_v7_0_irq_rearm - rearm IRQ if lost 426 * 427 * @adev: amdgpu_device pointer 428 * 429 */ 430 static void ih_v7_0_irq_rearm(struct amdgpu_device *adev, 431 struct amdgpu_ih_ring *ih) > 432 { 433 uint32_t v = 0; 434 uint32_t i = 0; 435 struct amdgpu_ih_regs *ih_regs; 436 437 ih_regs = &ih->ih_regs; 438 439 /* Rearm IRQ / re-write doorbell if doorbell write is lost */ 440 for (i = 0; i < MAX_REARM_RETRY; i++) { 441 v = RREG32_NO_KIQ(ih_regs->ih_rb_rptr); 442 if ((v < ih->ring_size) && (v != ih->rptr)) 443 WDOORBELL32(ih->doorbell_index, ih->rptr); 444 else 445 break; 446 } 447 } 448 449 /** 450 * ih_v7_0_set_rptr - set the IH ring buffer rptr 451 * 452 * @adev: amdgpu_device pointer 453 * 454 * Set the IH ring buffer rptr. 455 */ 456 static void ih_v7_0_set_rptr(struct amdgpu_device *adev, 457 struct amdgpu_ih_ring *ih) > 458 { 459 struct amdgpu_ih_regs *ih_regs; 460 461 if (ih->use_doorbell) { 462 /* XXX check if swapping is necessary on BE */ 463 *ih->rptr_cpu = ih->rptr; 464 WDOORBELL32(ih->doorbell_index, ih->rptr); 465 466 if (amdgpu_sriov_vf(adev)) 467 ih_v7_0_irq_rearm(adev, ih); 468 } else { 469 ih_regs = &ih->ih_regs; 470 WREG32(ih_regs->ih_rb_rptr, ih->rptr); 471 } 472 } 473 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
