[PATCH v3 1/5] drm:amdgpu: enable IH RB ring1 for IH v6.0

[Sunil Khatri]

We need IH ring1 for handling the pagefault
interrupts which are overflowing the default
ring for specific usecases.

Signed-off-by: Sunil Khatri <sunil.khatri at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/ih_v6_0.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/ih_v6_0.c b/drivers/gpu/drm/amd/amdgpu/ih_v6_0.c
index ad4ad39f128f..26dc99232eb6 100644
--- a/drivers/gpu/drm/amd/amdgpu/ih_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/ih_v6_0.c
@@ -549,8 +549,15 @@ static int ih_v6_0_sw_init(void *handle)
 	adev->irq.ih.use_doorbell = true;
 	adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1;
 
-	adev->irq.ih1.ring_size = 0;
-	adev->irq.ih2.ring_size = 0;
+	if (!(adev->flags & AMD_IS_APU)) {
+		r = amdgpu_ih_ring_init(adev, &adev->irq.ih1, IH_RING_SIZE,
+					use_bus_addr);
+		if (r)
+			return r;
+
+		adev->irq.ih1.use_doorbell = true;
+		adev->irq.ih1.doorbell_index = (adev->doorbell_index.ih + 1) << 1;
+	}
 
 	/* initialize ih control register offset */
 	ih_v6_0_init_register_offset(adev);
-- 
2.34.1