gpu: nvgpu: Split stalling interrupt handling

Split handling of stalling interrupt to Linux specific chip
agnostic and OS independent chip specific parts.

Linux specific chip independent part contains handler for ISR
and passing the control to a bottom half. It uses the new MC HALs
intr_stall (query interrupt status), intr_pause (pause interrupts)
and intr_resume (resume interrupts).

MC HAL isr_stall now returns void and gets called in thread context
and thus remove isr_thread_stall and replace the implementation with
isr_stall.

JIRA NVGPU-26

Change-Id: I206f330f6fc4a1f4def47c5f986585ac4080216d
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1480243
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/module.c b/drivers/gpu/nvgpu/common/linux/module.c
index ab99bef0..5e8af065 100644
--- a/drivers/gpu/nvgpu/common/linux/module.c
+++ b/drivers/gpu/nvgpu/common/linux/module.c
@@ -36,6 +36,7 @@
 #include "gk20a/ctxsw_trace_gk20a.h"
 #include "pci.h"
 #include "module.h"
+#include "intr.h"
 #ifdef CONFIG_TEGRA_19x_GPU
 #include "nvgpu_gpuid_t19x.h"
 #endif
@@ -482,7 +483,7 @@ static irqreturn_t gk20a_intr_isr_stall(int irq, void *dev_id)
 {
         struct gk20a *g = dev_id;
 
-        return g->ops.mc.isr_stall(g);
+        return nvgpu_intr_stall(g);
 }
 
 static irqreturn_t gk20a_intr_isr_nonstall(int irq, void *dev_id)
@@ -496,7 +497,7 @@ static irqreturn_t gk20a_intr_thread_stall(int irq, void *dev_id)
 {
         struct gk20a *g = dev_id;
 
-        return g->ops.mc.isr_thread_stall(g);
+        return nvgpu_intr_thread_stall(g);
 }
 
 void gk20a_remove_support(struct gk20a *g)