Re: [PATCH] drm/amdgpu: Use PSP to program IH_RB_CNTL_RING1/2 on SRIOV

[Christian König <christian.koenig@xxxxxxx>]

Am 07.06.21 um 21:39 schrieb Rohit Khaire:
> This is similar to IH_RB_CNTL programming in
> navi10_ih_toggle_ring_interrupts
>
> Signed-off-by: Rohit Khaire <rohit.khaire@xxxxxxx>

Acked-by: Christian König <christian.koenig@xxxxxxx>

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c |  2 ++
>   drivers/gpu/drm/amd/amdgpu/navi10_ih.c  | 20 +++++++++++++++-----
>   2 files changed, 17 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> index 47ceb783e2a5..058b1b1271e1 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> @@ -683,6 +683,8 @@ int psp_reg_program(struct psp_context *psp, enum psp_reg_prog_id reg,
>   
>   	psp_prep_reg_prog_cmd_buf(cmd, reg, value);
>   	ret = psp_cmd_submit_buf(psp, NULL, cmd, psp->fence_buf_mc_addr);
> +	if (ret)
> +		DRM_ERROR("PSP failed to program reg id %d", reg);
>   
>   	kfree(cmd);
>   	return ret;
> diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
> index eac564e8dd52..376ea281c4a7 100644
> --- a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
> +++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
> @@ -120,11 +120,23 @@ force_update_wptr_for_self_int(struct amdgpu_device *adev,
>   	ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
>   				   RB_USED_INT_THRESHOLD, threshold);
>   
> -	WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
> +	if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
> +		if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1, ih_rb_cntl))
> +			return;
> +	} else {
> +		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
> +	}
> +
>   	ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
>   	ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
>   				   RB_USED_INT_THRESHOLD, threshold);
> -	WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
> +	if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
> +		if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2, ih_rb_cntl))
> +			return;
> +	} else {
> +		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
> +	}
> +
>   	WREG32_SOC15(OSSSYS, 0, mmIH_CNTL2, ih_cntl);
>   }
>   
> @@ -153,10 +165,8 @@ static int navi10_ih_toggle_ring_interrupts(struct amdgpu_device *adev,
>   		tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, ENABLE_INTR, (enable ? 1 : 0));
>   
>   	if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
> -		if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) {
> -			DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
> +		if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp))
>   			return -ETIMEDOUT;
> -		}
>   	} else {
>   		WREG32(ih_regs->ih_rb_cntl, tmp);
>   	}

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