gpu: nvgpu: Add IOCTL for SM_EXCEPTION_TYPE_MASK

Add new ioctl to set the SM_EXCEPTION_TYPE_MASK is
added to dbg session.
Currently support SM_EXCEPTION_TYPE_MASK_FATAL type
If this type is set then the code will skip RC recovery,
instead trigger CILP preemption.

bug  200412641
JIRA NVGPU-702

Change-Id: I4b1f18379ee792cd324ccc555939e0f4f5c9e3b4
Signed-off-by: Vinod G <vinodg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1729792
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 20 insertions, 1 deletions

diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index 446f5bd3..0733a7b2 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -1411,8 +1411,27 @@ struct nvgpu_dbg_gpu_profiler_reserve_args {
 #define NVGPU_DBG_GPU_IOCTL_PROFILER_RESERVE                    \
         _IOWR(NVGPU_DBG_GPU_IOCTL_MAGIC, 22, struct nvgpu_dbg_gpu_profiler_reserve_args)
 
+/*
+ * This struct helps to set the exception mask. If mask is not set
+ * or set to NVGPU_DBG_GPU_IOCTL_SET_SM_EXCEPTION_TYPE_MASK_NONE
+ * then kernel code will follow recovery path on sm exception.
+ * If mask is set to NVGPU_DBG_GPU_IOCTL_SET_SM_EXCEPTION_TYPE_MASK_FATAL, then
+ * kernel code will skip recovery path on sm exception.
+ */
+struct nvgpu_dbg_gpu_set_sm_exception_type_mask_args {
+#define NVGPU_DBG_GPU_IOCTL_SET_SM_EXCEPTION_TYPE_MASK_NONE     (0x0U)
+#define NVGPU_DBG_GPU_IOCTL_SET_SM_EXCEPTION_TYPE_MASK_FATAL    (0x1U << 0U)
+        /* exception type mask value */
+        __u32 exception_type_mask;
+        __u32 reserved;
+};
+
+#define NVGPU_DBG_GPU_IOCTL_SET_SM_EXCEPTION_TYPE_MASK \
+        _IOW(NVGPU_DBG_GPU_IOCTL_MAGIC, 23, \
+                        struct nvgpu_dbg_gpu_set_sm_exception_type_mask_args)
+
 #define NVGPU_DBG_GPU_IOCTL_LAST                \
-        _IOC_NR(NVGPU_DBG_GPU_IOCTL_PROFILER_RESERVE)
+        _IOC_NR(NVGPU_DBG_GPU_IOCTL_SET_SM_EXCEPTION_TYPE_MASK)
 
 #define NVGPU_DBG_GPU_IOCTL_MAX_ARG_SIZE                \
         sizeof(struct nvgpu_dbg_gpu_access_fb_memory_args)