Add a helper function to check for stalled smmu and also avoid reading
RBBM_STATUS3 register which is in GX domain before ensuring GX is
ON.

Signed-off-by: Akhil P Oommen <quic_akhi...@quicinc.com>
---

 drivers/gpu/drm/msm/adreno/a6xx_gpu.c       | 8 +++++++-
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h       | 1 +
 drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 4 +---
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c 
b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 7d23c74..3faf551 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -14,6 +14,12 @@
 
 #define GPU_PAS_ID 13
 
+bool a6xx_is_smmu_stalled(struct msm_gpu *gpu)
+{
+       return !!(gpu_read(gpu, REG_A6XX_RBBM_STATUS3) &
+                       A6XX_RBBM_STATUS3_SMMU_STALLED_ON_FAULT);
+}
+
 static inline bool _a6xx_check_idle(struct msm_gpu *gpu)
 {
        struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
@@ -1346,7 +1352,7 @@ static void a6xx_fault_detect_irq(struct msm_gpu *gpu)
         * to otherwise resume normally rather than killing the submit, so
         * just bail.
         */
-       if (gpu_read(gpu, REG_A6XX_RBBM_STATUS3) & 
A6XX_RBBM_STATUS3_SMMU_STALLED_ON_FAULT)
+       if (a6xx_is_smmu_stalled(gpu))
                return;
 
        /*
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h 
b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
index 86e0a7c..675aef0 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.h
@@ -85,5 +85,6 @@ void a6xx_show(struct msm_gpu *gpu, struct msm_gpu_state 
*state,
 
 struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu);
 int a6xx_gpu_state_put(struct msm_gpu_state *state);
+bool a6xx_is_smmu_stalled(struct msm_gpu *gpu);
 
 #endif /* __A6XX_GPU_H__ */
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c 
b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index 55f4433..7de9d2f 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -971,8 +971,6 @@ struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu 
*gpu)
        struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
        struct a6xx_gpu_state *a6xx_state = kzalloc(sizeof(*a6xx_state),
                GFP_KERNEL);
-       bool stalled = !!(gpu_read(gpu, REG_A6XX_RBBM_STATUS3) &
-                       A6XX_RBBM_STATUS3_SMMU_STALLED_ON_FAULT);
 
        if (!a6xx_state)
                return ERR_PTR(-ENOMEM);
@@ -1003,7 +1001,7 @@ struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu 
*gpu)
         * write out GPU state, so we need to skip this when the SMMU is
         * stalled in response to an iova fault
         */
-       if (!stalled && !gpu->needs_hw_init &&
+       if (!a6xx_is_smmu_stalled(gpu) &&
            !a6xx_crashdumper_init(gpu, &_dumper)) {
                dumper = &_dumper;
        }
-- 
2.7.4

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