Re: [PATCH] drm/i915/rc6: throw out set() wrapper

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On Fri, Apr 21, 2023 at 04:59:48PM +0300, Jani Nikula wrote:
> Remove useless indirection that's just misdirection for the readers.
> 
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>

Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx>

> ---
>  drivers/gpu/drm/i915/gt/intel_rc6.c | 157 ++++++++++++++--------------
>  1 file changed, 76 insertions(+), 81 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
> index 8f3cd68d14f8..908a3d0f2343 100644
> --- a/drivers/gpu/drm/i915/gt/intel_rc6.c
> +++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
> @@ -53,11 +53,6 @@ static struct drm_i915_private *rc6_to_i915(struct intel_rc6 *rc)
>  	return rc6_to_gt(rc)->i915;
>  }
>  
> -static void set(struct intel_uncore *uncore, i915_reg_t reg, u32 val)
> -{
> -	intel_uncore_write_fw(uncore, reg, val);
> -}
> -
>  static void gen11_rc6_enable(struct intel_rc6 *rc6)
>  {
>  	struct intel_gt *gt = rc6_to_gt(rc6);
> @@ -72,19 +67,19 @@ static void gen11_rc6_enable(struct intel_rc6 *rc6)
>  	 */
>  	if (!intel_uc_uses_guc_rc(&gt->uc)) {
>  		/* 2b: Program RC6 thresholds.*/
> -		set(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16 | 85);
> -		set(uncore, GEN10_MEDIA_WAKE_RATE_LIMIT, 150);
> +		intel_uncore_write_fw(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16 | 85);
> +		intel_uncore_write_fw(uncore, GEN10_MEDIA_WAKE_RATE_LIMIT, 150);
>  
> -		set(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */
> -		set(uncore, GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */
> +		intel_uncore_write_fw(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */
> +		intel_uncore_write_fw(uncore, GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */
>  		for_each_engine(engine, rc6_to_gt(rc6), id)
> -			set(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
> +			intel_uncore_write_fw(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
>  
> -		set(uncore, GUC_MAX_IDLE_COUNT, 0xA);
> +		intel_uncore_write_fw(uncore, GUC_MAX_IDLE_COUNT, 0xA);
>  
> -		set(uncore, GEN6_RC_SLEEP, 0);
> +		intel_uncore_write_fw(uncore, GEN6_RC_SLEEP, 0);
>  
> -		set(uncore, GEN6_RC6_THRESHOLD, 50000); /* 50/125ms per EI */
> +		intel_uncore_write_fw(uncore, GEN6_RC6_THRESHOLD, 50000); /* 50/125ms per EI */
>  	}
>  
>  	/*
> @@ -105,8 +100,8 @@ static void gen11_rc6_enable(struct intel_rc6 *rc6)
>  	 * Broadwell+, To be conservative, we want to factor in a context
>  	 * switch on top (due to ksoftirqd).
>  	 */
> -	set(uncore, GEN9_MEDIA_PG_IDLE_HYSTERESIS, 60);
> -	set(uncore, GEN9_RENDER_PG_IDLE_HYSTERESIS, 60);
> +	intel_uncore_write_fw(uncore, GEN9_MEDIA_PG_IDLE_HYSTERESIS, 60);
> +	intel_uncore_write_fw(uncore, GEN9_RENDER_PG_IDLE_HYSTERESIS, 60);
>  
>  	/* 3a: Enable RC6
>  	 *
> @@ -141,7 +136,7 @@ static void gen11_rc6_enable(struct intel_rc6 *rc6)
>  					      VDN_MFX_POWERGATE_ENABLE(i));
>  	}
>  
> -	set(uncore, GEN9_PG_ENABLE, pg_enable);
> +	intel_uncore_write_fw(uncore, GEN9_PG_ENABLE, pg_enable);
>  }
>  
>  static void gen9_rc6_enable(struct intel_rc6 *rc6)
> @@ -152,26 +147,26 @@ static void gen9_rc6_enable(struct intel_rc6 *rc6)
>  
>  	/* 2b: Program RC6 thresholds.*/
>  	if (GRAPHICS_VER(rc6_to_i915(rc6)) >= 11) {
> -		set(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16 | 85);
> -		set(uncore, GEN10_MEDIA_WAKE_RATE_LIMIT, 150);
> +		intel_uncore_write_fw(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16 | 85);
> +		intel_uncore_write_fw(uncore, GEN10_MEDIA_WAKE_RATE_LIMIT, 150);
>  	} else if (IS_SKYLAKE(rc6_to_i915(rc6))) {
>  		/*
>  		 * WaRsDoubleRc6WrlWithCoarsePowerGating:skl Doubling WRL only
>  		 * when CPG is enabled
>  		 */
> -		set(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 108 << 16);
> +		intel_uncore_write_fw(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 108 << 16);
>  	} else {
> -		set(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16);
> +		intel_uncore_write_fw(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16);
>  	}
>  
> -	set(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */
> -	set(uncore, GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */
> +	intel_uncore_write_fw(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */
> +	intel_uncore_write_fw(uncore, GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */
>  	for_each_engine(engine, rc6_to_gt(rc6), id)
> -		set(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
> +		intel_uncore_write_fw(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
>  
> -	set(uncore, GUC_MAX_IDLE_COUNT, 0xA);
> +	intel_uncore_write_fw(uncore, GUC_MAX_IDLE_COUNT, 0xA);
>  
> -	set(uncore, GEN6_RC_SLEEP, 0);
> +	intel_uncore_write_fw(uncore, GEN6_RC_SLEEP, 0);
>  
>  	/*
>  	 * 2c: Program Coarse Power Gating Policies.
> @@ -194,11 +189,11 @@ static void gen9_rc6_enable(struct intel_rc6 *rc6)
>  	 * conservative, we have to factor in a context switch on top (due
>  	 * to ksoftirqd).
>  	 */
> -	set(uncore, GEN9_MEDIA_PG_IDLE_HYSTERESIS, 250);
> -	set(uncore, GEN9_RENDER_PG_IDLE_HYSTERESIS, 250);
> +	intel_uncore_write_fw(uncore, GEN9_MEDIA_PG_IDLE_HYSTERESIS, 250);
> +	intel_uncore_write_fw(uncore, GEN9_RENDER_PG_IDLE_HYSTERESIS, 250);
>  
>  	/* 3a: Enable RC6 */
> -	set(uncore, GEN6_RC6_THRESHOLD, 37500); /* 37.5/125ms per EI */
> +	intel_uncore_write_fw(uncore, GEN6_RC6_THRESHOLD, 37500); /* 37.5/125ms per EI */
>  
>  	rc6->ctl_enable =
>  		GEN6_RC_CTL_HW_ENABLE |
> @@ -210,8 +205,8 @@ static void gen9_rc6_enable(struct intel_rc6 *rc6)
>  	 *   - Render/Media PG need to be disabled with RC6.
>  	 */
>  	if (!NEEDS_WaRsDisableCoarsePowerGating(rc6_to_i915(rc6)))
> -		set(uncore, GEN9_PG_ENABLE,
> -		    GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE);
> +		intel_uncore_write_fw(uncore, GEN9_PG_ENABLE,
> +				      GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE);
>  }
>  
>  static void gen8_rc6_enable(struct intel_rc6 *rc6)
> @@ -221,13 +216,13 @@ static void gen8_rc6_enable(struct intel_rc6 *rc6)
>  	enum intel_engine_id id;
>  
>  	/* 2b: Program RC6 thresholds.*/
> -	set(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16);
> -	set(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */
> -	set(uncore, GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */
> +	intel_uncore_write_fw(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16);
> +	intel_uncore_write_fw(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */
> +	intel_uncore_write_fw(uncore, GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */
>  	for_each_engine(engine, rc6_to_gt(rc6), id)
> -		set(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
> -	set(uncore, GEN6_RC_SLEEP, 0);
> -	set(uncore, GEN6_RC6_THRESHOLD, 625); /* 800us/1.28 for TO */
> +		intel_uncore_write_fw(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
> +	intel_uncore_write_fw(uncore, GEN6_RC_SLEEP, 0);
> +	intel_uncore_write_fw(uncore, GEN6_RC6_THRESHOLD, 625); /* 800us/1.28 for TO */
>  
>  	/* 3: Enable RC6 */
>  	rc6->ctl_enable =
> @@ -245,20 +240,20 @@ static void gen6_rc6_enable(struct intel_rc6 *rc6)
>  	u32 rc6vids, rc6_mask;
>  	int ret;
>  
> -	set(uncore, GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16);
> -	set(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30);
> -	set(uncore, GEN6_RC6pp_WAKE_RATE_LIMIT, 30);
> -	set(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000);
> -	set(uncore, GEN6_RC_IDLE_HYSTERSIS, 25);
> +	intel_uncore_write_fw(uncore, GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16);
> +	intel_uncore_write_fw(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30);
> +	intel_uncore_write_fw(uncore, GEN6_RC6pp_WAKE_RATE_LIMIT, 30);
> +	intel_uncore_write_fw(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000);
> +	intel_uncore_write_fw(uncore, GEN6_RC_IDLE_HYSTERSIS, 25);
>  
>  	for_each_engine(engine, rc6_to_gt(rc6), id)
> -		set(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
> +		intel_uncore_write_fw(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
>  
> -	set(uncore, GEN6_RC_SLEEP, 0);
> -	set(uncore, GEN6_RC1e_THRESHOLD, 1000);
> -	set(uncore, GEN6_RC6_THRESHOLD, 50000);
> -	set(uncore, GEN6_RC6p_THRESHOLD, 150000);
> -	set(uncore, GEN6_RC6pp_THRESHOLD, 64000); /* unused */
> +	intel_uncore_write_fw(uncore, GEN6_RC_SLEEP, 0);
> +	intel_uncore_write_fw(uncore, GEN6_RC1e_THRESHOLD, 1000);
> +	intel_uncore_write_fw(uncore, GEN6_RC6_THRESHOLD, 50000);
> +	intel_uncore_write_fw(uncore, GEN6_RC6p_THRESHOLD, 150000);
> +	intel_uncore_write_fw(uncore, GEN6_RC6pp_THRESHOLD, 64000); /* unused */
>  
>  	/* We don't use those on Haswell */
>  	rc6_mask = GEN6_RC_CTL_RC6_ENABLE;
> @@ -372,22 +367,22 @@ static void chv_rc6_enable(struct intel_rc6 *rc6)
>  	enum intel_engine_id id;
>  
>  	/* 2a: Program RC6 thresholds.*/
> -	set(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16);
> -	set(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */
> -	set(uncore, GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */
> +	intel_uncore_write_fw(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16);
> +	intel_uncore_write_fw(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */
> +	intel_uncore_write_fw(uncore, GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */
>  
>  	for_each_engine(engine, rc6_to_gt(rc6), id)
> -		set(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
> -	set(uncore, GEN6_RC_SLEEP, 0);
> +		intel_uncore_write_fw(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
> +	intel_uncore_write_fw(uncore, GEN6_RC_SLEEP, 0);
>  
>  	/* TO threshold set to 500 us (0x186 * 1.28 us) */
> -	set(uncore, GEN6_RC6_THRESHOLD, 0x186);
> +	intel_uncore_write_fw(uncore, GEN6_RC6_THRESHOLD, 0x186);
>  
>  	/* Allows RC6 residency counter to work */
> -	set(uncore, VLV_COUNTER_CONTROL,
> -	    _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH |
> -			       VLV_MEDIA_RC6_COUNT_EN |
> -			       VLV_RENDER_RC6_COUNT_EN));
> +	intel_uncore_write_fw(uncore, VLV_COUNTER_CONTROL,
> +			      _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH |
> +						 VLV_MEDIA_RC6_COUNT_EN |
> +						 VLV_RENDER_RC6_COUNT_EN));
>  
>  	/* 3: Enable RC6 */
>  	rc6->ctl_enable = GEN7_RC_CTL_TO_MODE;
> @@ -399,22 +394,22 @@ static void vlv_rc6_enable(struct intel_rc6 *rc6)
>  	struct intel_engine_cs *engine;
>  	enum intel_engine_id id;
>  
> -	set(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000);
> -	set(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000);
> -	set(uncore, GEN6_RC_IDLE_HYSTERSIS, 25);
> +	intel_uncore_write_fw(uncore, GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000);
> +	intel_uncore_write_fw(uncore, GEN6_RC_EVALUATION_INTERVAL, 125000);
> +	intel_uncore_write_fw(uncore, GEN6_RC_IDLE_HYSTERSIS, 25);
>  
>  	for_each_engine(engine, rc6_to_gt(rc6), id)
> -		set(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
> +		intel_uncore_write_fw(uncore, RING_MAX_IDLE(engine->mmio_base), 10);
>  
> -	set(uncore, GEN6_RC6_THRESHOLD, 0x557);
> +	intel_uncore_write_fw(uncore, GEN6_RC6_THRESHOLD, 0x557);
>  
>  	/* Allows RC6 residency counter to work */
> -	set(uncore, VLV_COUNTER_CONTROL,
> -	    _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH |
> -			       VLV_MEDIA_RC0_COUNT_EN |
> -			       VLV_RENDER_RC0_COUNT_EN |
> -			       VLV_MEDIA_RC6_COUNT_EN |
> -			       VLV_RENDER_RC6_COUNT_EN));
> +	intel_uncore_write_fw(uncore, VLV_COUNTER_CONTROL,
> +			      _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH |
> +						 VLV_MEDIA_RC0_COUNT_EN |
> +						 VLV_RENDER_RC0_COUNT_EN |
> +						 VLV_MEDIA_RC6_COUNT_EN |
> +						 VLV_RENDER_RC6_COUNT_EN));
>  
>  	rc6->ctl_enable =
>  	    GEN7_RC_CTL_TO_MODE | VLV_RC_CTL_CTX_RST_PARALLEL;
> @@ -575,9 +570,9 @@ static void __intel_rc6_disable(struct intel_rc6 *rc6)
>  
>  	intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
>  	if (GRAPHICS_VER(i915) >= 9)
> -		set(uncore, GEN9_PG_ENABLE, 0);
> -	set(uncore, GEN6_RC_CONTROL, 0);
> -	set(uncore, GEN6_RC_STATE, 0);
> +		intel_uncore_write_fw(uncore, GEN9_PG_ENABLE, 0);
> +	intel_uncore_write_fw(uncore, GEN6_RC_CONTROL, 0);
> +	intel_uncore_write_fw(uncore, GEN6_RC_STATE, 0);
>  	intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
>  }
>  
> @@ -684,7 +679,7 @@ void intel_rc6_unpark(struct intel_rc6 *rc6)
>  		return;
>  
>  	/* Restore HW timers for automatic RC6 entry while busy */
> -	set(uncore, GEN6_RC_CONTROL, rc6->ctl_enable);
> +	intel_uncore_write_fw(uncore, GEN6_RC_CONTROL, rc6->ctl_enable);
>  }
>  
>  void intel_rc6_park(struct intel_rc6 *rc6)
> @@ -704,7 +699,7 @@ void intel_rc6_park(struct intel_rc6 *rc6)
>  		return;
>  
>  	/* Turn off the HW timers and go directly to rc6 */
> -	set(uncore, GEN6_RC_CONTROL, GEN6_RC_CTL_RC6_ENABLE);
> +	intel_uncore_write_fw(uncore, GEN6_RC_CONTROL, GEN6_RC_CTL_RC6_ENABLE);
>  
>  	if (HAS_RC6pp(rc6_to_i915(rc6)))
>  		target = 0x6; /* deepest rc6 */
> @@ -712,7 +707,7 @@ void intel_rc6_park(struct intel_rc6 *rc6)
>  		target = 0x5; /* deep rc6 */
>  	else
>  		target = 0x4; /* normal rc6 */
> -	set(uncore, GEN6_RC_STATE, target << RC_SW_TARGET_STATE_SHIFT);
> +	intel_uncore_write_fw(uncore, GEN6_RC_STATE, target << RC_SW_TARGET_STATE_SHIFT);
>  }
>  
>  void intel_rc6_disable(struct intel_rc6 *rc6)
> @@ -735,7 +730,7 @@ void intel_rc6_fini(struct intel_rc6 *rc6)
>  
>  	/* We want the BIOS C6 state preserved across loads for MTL */
>  	if (IS_METEORLAKE(rc6_to_i915(rc6)) && rc6->bios_state_captured)
> -		set(uncore, GEN6_RC_STATE, rc6->bios_rc_state);
> +		intel_uncore_write_fw(uncore, GEN6_RC_STATE, rc6->bios_rc_state);
>  
>  	pctx = fetch_and_zero(&rc6->pctx);
>  	if (pctx)
> @@ -766,18 +761,18 @@ static u64 vlv_residency_raw(struct intel_uncore *uncore, const i915_reg_t reg)
>  	 * before we have set the default VLV_COUNTER_CONTROL value. So always
>  	 * set the high bit to be safe.
>  	 */
> -	set(uncore, VLV_COUNTER_CONTROL,
> -	    _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH));
> +	intel_uncore_write_fw(uncore, VLV_COUNTER_CONTROL,
> +			      _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH));
>  	upper = intel_uncore_read_fw(uncore, reg);
>  	do {
>  		tmp = upper;
>  
> -		set(uncore, VLV_COUNTER_CONTROL,
> -		    _MASKED_BIT_DISABLE(VLV_COUNT_RANGE_HIGH));
> +		intel_uncore_write_fw(uncore, VLV_COUNTER_CONTROL,
> +				      _MASKED_BIT_DISABLE(VLV_COUNT_RANGE_HIGH));
>  		lower = intel_uncore_read_fw(uncore, reg);
>  
> -		set(uncore, VLV_COUNTER_CONTROL,
> -		    _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH));
> +		intel_uncore_write_fw(uncore, VLV_COUNTER_CONTROL,
> +				      _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH));
>  		upper = intel_uncore_read_fw(uncore, reg);
>  	} while (upper != tmp && --loop);
>  
> -- 
> 2.39.2
> 

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation



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