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drm/amdgpu/tonga_ih: Enable soft IRQ handler ring

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We are going to use the soft IRQ handler ring on GMC v8
to process interrupts from VM faults.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Timur Kristóf 2025-11-26 14:29:46 +01:00 committed by Alex Deucher
parent f4fa4c9e2d
commit f8085859a5
1 changed files with 10 additions and 0 deletions
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10
drivers/gpu/drm/amd/amdgpu/tonga_ih.c
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@ -159,6 +159,9 @@ static int tonga_ih_irq_init(struct amdgpu_device *adev)
/* enable interrupts */
tonga_ih_enable_interrupts(adev);
if (adev->irq.ih_soft.ring_size)
adev->irq.ih_soft.enabled = true;
return 0;
}
@ -196,6 +199,9 @@ static u32 tonga_ih_get_wptr(struct amdgpu_device *adev,
wptr = le32_to_cpu(*ih->wptr_cpu);
if (ih == &adev->irq.ih_soft)
goto out;
if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
goto out;
@ -306,6 +312,10 @@ static int tonga_ih_sw_init(struct amdgpu_ip_block *ip_block)
if (r)
return r;
r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, IH_SW_RING_SIZE, true);
if (r)
return r;
adev->irq.ih.use_doorbell = true;
adev->irq.ih.doorbell_index = adev->doorbell_index.ih;