[PATCH] drm/amdgpu: enable ih1 ih2 for Arcturus only

[Alex Sierra]

Enable multi-ring ih1 and ih2 for Arcturus only.
For Navi10 family multi-ring has been disabled.
Apparently, having multi-ring enabled in Navi was causing
continus page fault interrupts.
Further investigation is needed to get to the root cause.
Related issue link:
https://gitlab.freedesktop.org/drm/amd/-/issues/1279

Signed-off-by: Alex Sierra <alex.sierra at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/navi10_ih.c | 30 ++++++++++++++++----------
 1 file changed, 19 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
index 350f1bf063c6..4d73869870ab 100644
--- a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
@@ -306,7 +306,8 @@ static int navi10_ih_irq_init(struct amdgpu_device *adev)
 	} else {
 		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
 	}
-	navi10_ih_reroute_ih(adev);
+	if (adev->asic_type == CHIP_ARCTURUS)
+		navi10_ih_reroute_ih(adev);
 
 	if (unlikely(adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT)) {
 		if (ih->use_bus_addr) {
@@ -668,19 +669,26 @@ static int navi10_ih_sw_init(void *handle)
 	adev->irq.ih.use_doorbell = true;
 	adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1;
 
-	r = amdgpu_ih_ring_init(adev, &adev->irq.ih1, PAGE_SIZE, true);
-	if (r)
-		return r;
+	adev->irq.ih1.ring_size = 0;
+	adev->irq.ih2.ring_size = 0;
 
-	adev->irq.ih1.use_doorbell = true;
-	adev->irq.ih1.doorbell_index = (adev->doorbell_index.ih + 1) << 1;
+	if (adev->asic_type == CHIP_ARCTURUS) {
+		r = amdgpu_ih_ring_init(adev, &adev->irq.ih1, PAGE_SIZE, true);
+		if (r)
+			return r;
 
-	r = amdgpu_ih_ring_init(adev, &adev->irq.ih2, PAGE_SIZE, true);
-	if (r)
-		return r;
+		adev->irq.ih1.use_doorbell = true;
+		adev->irq.ih1.doorbell_index =
+					(adev->doorbell_index.ih + 1) << 1;
+
+		r = amdgpu_ih_ring_init(adev, &adev->irq.ih2, PAGE_SIZE, true);
+		if (r)
+			return r;
 
-	adev->irq.ih2.use_doorbell = true;
-	adev->irq.ih2.doorbell_index = (adev->doorbell_index.ih + 2) << 1;
+		adev->irq.ih2.use_doorbell = true;
+		adev->irq.ih2.doorbell_index =
+					(adev->doorbell_index.ih + 2) << 1;
+	}
 
 	r = amdgpu_irq_init(adev);
 
-- 
2.17.1