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| author | Hawking Zhang <Hawking.Zhang@amd.com> | 2020-12-01 22:53:17 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-12-23 15:03:45 -0500 |
| commit | ffa02126e0ef88f9f9e5fb4009504fc471d5fb1a (patch) | |
| tree | cdbce9cc8b1ca357f453062729627a733187eb0a /drivers | |
| parent | 1ebb4841f064ea8f3aff95cc29a931dbd3fad685 (diff) | |
| download | linux-stable-ffa02126e0ef88f9f9e5fb4009504fc471d5fb1a.tar.gz linux-stable-ffa02126e0ef88f9f9e5fb4009504fc471d5fb1a.tar.bz2 linux-stable-ffa02126e0ef88f9f9e5fb4009504fc471d5fb1a.zip | |
drm/amdgpu: add helper to enable an ih ring for vega10
vega10_ih_enable_ring will be used to enable an
ih ring for vega10/12, RAVEN series and RENOIR.
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Dennis Li <Dennis.Li@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vega10_ih.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c index a11553a23538..42e7897f2bbc 100644 --- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c @@ -256,6 +256,58 @@ static uint32_t vega10_ih_doorbell_rptr(struct amdgpu_ih_ring *ih) } /** + * vega10_ih_enable_ring - enable an ih ring buffer + * + * @adev: amdgpu_device pointer + * @ih: amdgpu_ih_ring pointer + * + * Enable an ih ring buffer (VEGA10) + */ +static int vega10_ih_enable_ring(struct amdgpu_device *adev, + struct amdgpu_ih_ring *ih) +{ + struct amdgpu_ih_regs *ih_regs; + uint32_t tmp; + + ih_regs = &ih->ih_regs; + + /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/ + WREG32(ih_regs->ih_rb_base, ih->gpu_addr >> 8); + WREG32(ih_regs->ih_rb_base_hi, (ih->gpu_addr >> 40) & 0xff); + + tmp = RREG32(ih_regs->ih_rb_cntl); + tmp = vega10_ih_rb_cntl(ih, tmp); + if (ih == &adev->irq.ih) + tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RPTR_REARM, !!adev->irq.msi_enabled); + if (ih == &adev->irq.ih1) { + tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_ENABLE, 0); + tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_FULL_DRAIN_ENABLE, 1); + } + if (amdgpu_sriov_vf(adev)) { + if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) { + dev_err(adev->dev, "PSP program IH_RB_CNTL failed!\n"); + return -ETIMEDOUT; + } + } else { + WREG32(ih_regs->ih_rb_cntl, tmp); + } + + if (ih == &adev->irq.ih) { + /* set the ih ring 0 writeback address whether it's enabled or not */ + WREG32(ih_regs->ih_rb_wptr_addr_lo, lower_32_bits(ih->wptr_addr)); + WREG32(ih_regs->ih_rb_wptr_addr_hi, upper_32_bits(ih->wptr_addr) & 0xFFFF); + } + + /* set rptr, wptr to 0 */ + WREG32(ih_regs->ih_rb_wptr, 0); + WREG32(ih_regs->ih_rb_rptr, 0); + + WREG32(ih_regs->ih_doorbell_rptr, vega10_ih_doorbell_rptr(ih)); + + return 0; +} + +/** * vega10_ih_irq_init - init and enable the interrupt ring * * @adev: amdgpu_device pointer |