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Commit eeec2726 authored by Jordan Crouse's avatar Jordan Crouse
Browse files

drm/msm: Add save/restore functions for perfcounters 



Add functions to save and restore the value of some of the
performance counters during a power cycle.

Change-Id: Ic0dedbad4037d6a2262792b752dc5d33a2d0eb36
Signed-off-by: default avatarJordan Crouse <jcrouse@codeaurora.org>
parent a2d757fc

drivers/gpu/drm/msm/adreno/a5xx_counters.c

+271 −135

File changed.

Preview size limit exceeded, changes collapsed.

drivers/gpu/drm/msm/adreno/a5xx_gpu.c

+7 −0
Original line number Diff line number Diff line
@@ -1174,6 +1174,10 @@ static int a5xx_pm_resume(struct msm_gpu *gpu) 
	if (ret)

		return ret;





	/* Restore all the counters before turning on the GPMU */

	a5xx_counters_restore(gpu);



	/* Turn the RBCCU domain first to limit the chances of voltage droop */

	gpu_write(gpu, REG_A5XX_GPMU_RBCCU_POWER_CNTL, 0x778000);
@@ -1211,6 +1215,9 @@ static int a5xx_pm_suspend(struct msm_gpu *gpu) 


	gpu_write(gpu, REG_A5XX_VBIF_XIN_HALT_CTRL0, 0);



	/* Save the counters before going down */

	a5xx_counters_save(gpu);



	/*

	 * Reset the VBIF before power collapse to avoid issue with FIFO

	 * entries

drivers/gpu/drm/msm/adreno/a5xx_gpu.h

+2 −0
Original line number Diff line number Diff line
@@ -194,5 +194,7 @@ static inline bool a5xx_in_preempt(struct a5xx_gpu *a5xx_gpu) 
}



int a5xx_counters_init(struct adreno_gpu *adreno_gpu);

void a5xx_counters_save(struct msm_gpu *gpu);

void a5xx_counters_restore(struct msm_gpu *gpu);



#endif /* __A5XX_GPU_H__ */

drivers/gpu/drm/msm/adreno/adreno_gpu.h

+7 −1
Original line number Diff line number Diff line
@@ -87,8 +87,10 @@ struct adreno_counter { 
	u32 lo;

	u32 hi;

	u32 sel;

	int load_bit;

	u32 countable;

	u32 refcount;

	u64 value;

};



struct adreno_counter_group {
@@ -99,11 +101,15 @@ struct adreno_counter_group { 
		int (*get)(struct msm_gpu *,

			struct adreno_counter_group *, u32, u32 *, u32 *);

		void (*enable)(struct msm_gpu *,

			struct adreno_counter_group *, int);

			struct adreno_counter_group *, int, bool);

		u64 (*read)(struct msm_gpu *,

			struct adreno_counter_group *, int);

		void (*put)(struct msm_gpu *,

			struct adreno_counter_group *, int);

		void (*save)(struct msm_gpu *,

			struct adreno_counter_group *);

		void (*restore)(struct msm_gpu *,

			struct adreno_counter_group *);

	} funcs;

};