[PATCH 2/3] drm/amdgpu: add support for processing IH ring 1 & 2

[Christian König]

Previously we only added the ring buffer memory, now add the handling as
well.

Signed-off-by: Christian König <christian.koenig at amd.com>
Acked-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 33 +++++++++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h |  4 ++-
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
index b8e543e23166..8bfb3dab46f7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -176,6 +176,36 @@ irqreturn_t amdgpu_irq_handler(int irq, void *arg)
 	return ret;
 }
 
+/**
+ * amdgpu_irq_handle_ih1 - kick of processing for IH1
+ *
+ * @work: work structure in struct amdgpu_irq
+ *
+ * Kick of processing IH ring 1.
+ */
+static void amdgpu_irq_handle_ih1(struct work_struct *work)
+{
+	struct amdgpu_device *adev = container_of(work, struct amdgpu_device,
+						  irq.ih1_work);
+
+	amdgpu_ih_process(adev, &adev->irq.ih1, amdgpu_irq_callback);
+}
+
+/**
+ * amdgpu_irq_handle_ih2 - kick of processing for IH2
+ *
+ * @work: work structure in struct amdgpu_irq
+ *
+ * Kick of processing IH ring 2.
+ */
+static void amdgpu_irq_handle_ih2(struct work_struct *work)
+{
+	struct amdgpu_device *adev = container_of(work, struct amdgpu_device,
+						  irq.ih2_work);
+
+	amdgpu_ih_process(adev, &adev->irq.ih2, amdgpu_irq_callback);
+}
+
 /**
  * amdgpu_msi_ok - check whether MSI functionality is enabled
  *
@@ -240,6 +270,9 @@ int amdgpu_irq_init(struct amdgpu_device *adev)
 				amdgpu_hotplug_work_func);
 	}
 
+	INIT_WORK(&adev->irq.ih1_work, amdgpu_irq_handle_ih1);
+	INIT_WORK(&adev->irq.ih2_work, amdgpu_irq_handle_ih2);
+
 	adev->irq.installed = true;
 	r = drm_irq_install(adev->ddev, adev->ddev->pdev->irq);
 	if (r) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h
index 7e06fa64321a..c27decfda494 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h
@@ -89,7 +89,9 @@ struct amdgpu_irq {
 
 	/* interrupt rings */
 	struct amdgpu_ih_ring		ih, ih1, ih2;
-	const struct amdgpu_ih_funcs	*ih_funcs;
+	const struct amdgpu_ih_funcs    *ih_funcs;
+	struct work_struct		ih1_work, ih2_work;
+	struct amdgpu_irq_src		self_irq;
 
 	/* gen irq stuff */
 	struct irq_domain		*domain; /* GPU irq controller domain */
-- 
2.17.1