This patch enables the use of interrupts in the KFD scheduler when the
scheduler performs its initialization.
It also disables the interrupts when the scheduler stops its work.
Signed-off-by: Oded Gabbay <oded.gabbay@xxxxxxx>
---
drivers/gpu/hsa/radeon/kfd_sched_cik_static.c | 28 +++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/gpu/hsa/radeon/kfd_sched_cik_static.c b/drivers/gpu/hsa/radeon/kfd_sched_cik_static.c
index 5d42e88..9add5e5 100644
--- a/drivers/gpu/hsa/radeon/kfd_sched_cik_static.c
+++ b/drivers/gpu/hsa/radeon/kfd_sched_cik_static.c
@@ -486,6 +486,32 @@ static void cik_static_destroy(struct kfd_scheduler *scheduler)
kfree(priv);
}
+static void
+enable_interrupts(struct cik_static_private *priv)
+{
+ unsigned int i;
+
+ lock_srbm_index(priv);
+ for (i = 0; i < priv->num_pipes; i++) {
+ pipe_select(priv, i);
+ WRITE_REG(priv->dev, CPC_INT_CNTL, DEQUEUE_REQUEST_INT_ENABLE);
+ }
+ unlock_srbm_index(priv);
+}
+
+static void
+disable_interrupts(struct cik_static_private *priv)
+{
+ unsigned int i;
+
+ lock_srbm_index(priv);
+ for (i = 0; i < priv->num_pipes; i++) {
+ pipe_select(priv, i);
+ WRITE_REG(priv->dev, CPC_INT_CNTL, 0);
+ }
+ unlock_srbm_index(priv);
+}
+
static void cik_static_start(struct kfd_scheduler *scheduler)
{
struct cik_static_private *priv = kfd_scheduler_to_private(scheduler);
@@ -495,6 +521,7 @@ static void cik_static_start(struct kfd_scheduler *scheduler)
init_pipes(priv);
init_ats(priv);
+ enable_interrupts(priv);
}
static void cik_static_stop(struct kfd_scheduler *scheduler)
@@ -502,6 +529,7 @@ static void cik_static_stop(struct kfd_scheduler *scheduler)
struct cik_static_private *priv = kfd_scheduler_to_private(scheduler);
exit_ats(priv);
+ disable_interrupts(priv);
radeon_kfd_vidmem_ungpumap(priv->dev, priv->hpd_mem);
radeon_kfd_vidmem_ungpumap(priv->dev, priv->mqd_mem);
--
1.9.1
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