gpu: nvgpu: add characteristic flag for syncpoint address support

Add characteristic flag NVGPU_GPU_FLAGS_SUPPORT_SYNCPOINT_ADDRESS to indicate if
platform supports semaphore GPU_VA address for a syncpoint

Define NVGPU_SUPPORT_SYNCPOINT_ADDRESS for core driver book keeping

Set this flag for both GV100 and GV11B since Xavier SoC supports a semaphore
GPU_VA address for a syncpoint through syncpoint SHIM

Bug 200327559

Change-Id: I1f31673c9fd59f493d0b35a80d23151fc063ae06
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1649364
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

5 files changed, 11 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c b/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c
index 398823f3..f5f467b3 100644
--- a/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c
+++ b/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c
@@ -156,6 +156,8 @@ static struct nvgpu_flags_mapping flags_mapping[] = {
                 NVGPU_SUPPORT_DETERMINISTIC_SUBMIT_FULL},
         {NVGPU_GPU_FLAGS_SUPPORT_DETERMINISTIC_OPTS,
                 NVGPU_SUPPORT_DETERMINISTIC_OPTS},
+        {NVGPU_GPU_FLAGS_SUPPORT_SYNCPOINT_ADDRESS,
+                NVGPU_SUPPORT_SYNCPOINT_ADDRESS},
         {NVGPU_GPU_FLAGS_SUPPORT_IO_COHERENCE,
                 NVGPU_SUPPORT_IO_COHERENCE},
         {NVGPU_GPU_FLAGS_SUPPORT_RESCHEDULE_RUNLIST,
diff --git a/drivers/gpu/nvgpu/gv100/hal_gv100.c b/drivers/gpu/nvgpu/gv100/hal_gv100.c
index 0f966adb..f75e6ff9 100644
--- a/drivers/gpu/nvgpu/gv100/hal_gv100.c
+++ b/drivers/gpu/nvgpu/gv100/hal_gv100.c
@@ -248,6 +248,7 @@ int gv100_init_gpu_characteristics(struct gk20a *g)
                 return err;
 
         __nvgpu_set_enabled(g, NVGPU_SUPPORT_TSG_SUBCONTEXTS, true);
+        __nvgpu_set_enabled(g, NVGPU_SUPPORT_SYNCPOINT_ADDRESS, true);
 
         return 0;
 }
diff --git a/drivers/gpu/nvgpu/gv11b/gv11b.c b/drivers/gpu/nvgpu/gv11b/gv11b.c
index ab4b7fcd..2670c986 100644
--- a/drivers/gpu/nvgpu/gv11b/gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/gv11b.c
@@ -154,5 +154,6 @@ int gv11b_init_gpu_characteristics(struct gk20a *g)
         __nvgpu_set_enabled(g, NVGPU_SUPPORT_TSG_SUBCONTEXTS, true);
         __nvgpu_set_enabled(g, NVGPU_SUPPORT_IO_COHERENCE, true);
         __nvgpu_set_enabled(g, NVGPU_SUPPORT_SCG, true);
+        __nvgpu_set_enabled(g, NVGPU_SUPPORT_SYNCPOINT_ADDRESS, true);
         return 0;
 }
diff --git a/drivers/gpu/nvgpu/include/nvgpu/enabled.h b/drivers/gpu/nvgpu/include/nvgpu/enabled.h
index edf38a6a..cdfd0c55 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/enabled.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/enabled.h
@@ -152,10 +152,14 @@ struct gk20a;
 #define NVGPU_SUPPORT_TSG_SUBCONTEXTS           63
 /* Simultaneous Compute and Graphics (SCG) is available */
 #define NVGPU_SUPPORT_SCG                       64
+
+/* GPU_VA address of a syncpoint is supported */
+#define NVGPU_SUPPORT_SYNCPOINT_ADDRESS         65
+
 /*
  * Must be greater than the largest bit offset in the above list.
  */
-#define NVGPU_MAX_ENABLED_BITS                  65
+#define NVGPU_MAX_ENABLED_BITS                  66
 
 /**
  * nvgpu_is_enabled - Check if the passed flag is enabled.
diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index 95acc63c..6821af07 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -154,6 +154,8 @@ struct nvgpu_gpu_zbc_query_table_args {
 #define NVGPU_GPU_FLAGS_SUPPORT_DETERMINISTIC_OPTS      (1ULL << 24)
 /* SCG support is available */
 #define NVGPU_GPU_FLAGS_SUPPORT_SCG                     (1ULL << 25)
+/* GPU_VA address of a syncpoint is supported */
+#define NVGPU_GPU_FLAGS_SUPPORT_SYNCPOINT_ADDRESS       (1ULL << 26)
 /* SM LRF ECC is enabled */
 #define NVGPU_GPU_FLAGS_ECC_ENABLED_SM_LRF      (1ULL << 60)
 /* SM SHM ECC is enabled */