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From: Stuart Summers <stuart.summers@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH 05/11] drm/i915: Use local variables for subslice_mask for device info
Date: Tue, 20 Aug 2019 16:05:38 -0700	[thread overview]
Message-ID: <20190820230544.170010-6-stuart.summers@intel.com> (raw)
In-Reply-To: <20190820230544.170010-1-stuart.summers@intel.com>

When setting up subslice_mask, instead of operating on the slice
array directly, use a local variable to start bits per slice, then
use this to set the per slice array in one step.

Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
 drivers/gpu/drm/i915/intel_device_info.c | 49 +++++++++++++-----------
 1 file changed, 26 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index b1a79ed408eb..52515efe9f4e 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -235,18 +235,6 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
 	sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
 			    GEN10_F2_S_ENA_SHIFT;
 
-	subslice_mask = (1 << 4) - 1;
-	subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
-			   GEN10_F2_SS_DIS_SHIFT);
-
-	/*
-	 * Slice0 can have up to 3 subslices, but there are only 2 in
-	 * slice1/2.
-	 */
-	sseu->subslice_mask[0] = subslice_mask;
-	for (s = 1; s < sseu->max_slices; s++)
-		sseu->subslice_mask[s] = subslice_mask & 0x3;
-
 	/* Slice0 */
 	eu_en = ~I915_READ(GEN8_EU_DISABLE0);
 	for (ss = 0; ss < sseu->max_subslices; ss++)
@@ -270,14 +258,24 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
 	eu_en = ~I915_READ(GEN10_EU_DISABLE3);
 	sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
 
-	/* Do a second pass where we mark the subslices disabled if all their
-	 * eus are off.
-	 */
+	subslice_mask = (1 << 4) - 1;
+	subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
+			   GEN10_F2_SS_DIS_SHIFT);
+
 	for (s = 0; s < sseu->max_slices; s++) {
+		u32 subslice_mask_with_eus = subslice_mask;
+
 		for (ss = 0; ss < sseu->max_subslices; ss++) {
 			if (sseu_get_eus(sseu, s, ss) == 0)
-				sseu->subslice_mask[s] &= ~BIT(ss);
+				subslice_mask_with_eus &= ~BIT(ss);
 		}
+
+		/*
+		 * Slice0 can have up to 3 subslices, but there are only 2 in
+		 * slice1/2.
+		 */
+		sseu->subslice_mask[s] = s == 0 ? subslice_mask_with_eus :
+						  subslice_mask_with_eus & 0x3;
 	}
 
 	sseu->eu_total = compute_eu_total(sseu);
@@ -303,6 +301,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
 {
 	struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
 	u32 fuse;
+	u8 subslice_mask = 0;
 
 	fuse = I915_READ(CHV_FUSE_GT);
 
@@ -316,7 +315,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
 			(((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
 			  CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
 
-		sseu->subslice_mask[0] |= BIT(0);
+		subslice_mask |= BIT(0);
 		sseu_set_eus(sseu, 0, 0, ~disabled_mask);
 	}
 
@@ -327,10 +326,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
 			(((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
 			  CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
 
-		sseu->subslice_mask[0] |= BIT(1);
+		subslice_mask |= BIT(1);
 		sseu_set_eus(sseu, 0, 1, ~disabled_mask);
 	}
 
+	sseu->subslice_mask[0] = subslice_mask;
+
 	sseu->eu_total = compute_eu_total(sseu);
 
 	/*
@@ -540,6 +541,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
 {
 	struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
 	u32 fuse1;
+	u8 subslice_mask = 0;
 	int s, ss;
 
 	/*
@@ -552,16 +554,15 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
 		/* fall through */
 	case 1:
 		sseu->slice_mask = BIT(0);
-		sseu->subslice_mask[0] = BIT(0);
+		subslice_mask = BIT(0);
 		break;
 	case 2:
 		sseu->slice_mask = BIT(0);
-		sseu->subslice_mask[0] = BIT(0) | BIT(1);
+		subslice_mask = BIT(0) | BIT(1);
 		break;
 	case 3:
 		sseu->slice_mask = BIT(0) | BIT(1);
-		sseu->subslice_mask[0] = BIT(0) | BIT(1);
-		sseu->subslice_mask[1] = BIT(0) | BIT(1);
+		subslice_mask = BIT(0) | BIT(1);
 		break;
 	}
 
@@ -583,10 +584,12 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
 	}
 
 	intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
-			    hweight8(sseu->subslice_mask[0]),
+			    hweight8(subslice_mask),
 			    sseu->eu_per_subslice);
 
 	for (s = 0; s < sseu->max_slices; s++) {
+		sseu->subslice_mask[s] = subslice_mask;
+
 		for (ss = 0; ss < sseu->max_subslices; ss++) {
 			sseu_set_eus(sseu, s, ss,
 				     (1UL << sseu->eu_per_subslice) - 1);
-- 
2.22.0

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  parent reply	other threads:[~2019-08-20 23:04 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-20 23:05 [PATCH 00/11] Refactor to expand subslice mask (rev 2) Stuart Summers
2019-08-20 23:05 ` [PATCH 01/11] drm/i915: Use variable for debugfs device status Stuart Summers
2019-08-20 23:05 ` [PATCH 02/11] drm/i915: Add function to set SSEU info per platform Stuart Summers
2019-08-20 23:05 ` [PATCH 03/11] drm/i915: Add subslice stride runtime parameter Stuart Summers
2019-08-20 23:05 ` [PATCH 04/11] drm/i915: Add EU " Stuart Summers
2019-08-20 23:05 ` Stuart Summers [this message]
2019-08-21 22:31   ` [PATCH 05/11] drm/i915: Use local variables for subslice_mask for device info Chris Wilson
2019-08-20 23:05 ` [PATCH 06/11] drm/i915: Add function to set subslices Stuart Summers
2019-08-21 22:32   ` Chris Wilson
2019-08-21 22:37     ` Summers, Stuart
2019-08-20 23:05 ` [PATCH 07/11] drm/i915: Use subslice stride to set subslices for a given slice Stuart Summers
2019-08-21 22:36   ` Chris Wilson
2019-08-21 22:46     ` Summers, Stuart
2019-08-20 23:05 ` [PATCH 08/11] drm/i915: Add function to determine if a slice has a subslice Stuart Summers
2019-08-20 23:05 ` [PATCH 09/11] drm/i915: Refactor instdone loops on new subslice functions Stuart Summers
2019-08-21 22:56   ` Chris Wilson
2019-08-21 23:32     ` Summers, Stuart
2019-08-20 23:05 ` [PATCH 10/11] drm/i915: Add new function to copy subslices for a slice Stuart Summers
2019-08-21 22:41   ` Chris Wilson
2019-08-22 16:36     ` Summers, Stuart
2019-08-20 23:05 ` [PATCH 11/11] drm/i915: Expand subslice mask Stuart Summers
2019-08-21 22:49   ` Chris Wilson
2019-08-22  0:01     ` Summers, Stuart
2019-08-20 23:59 ` ✗ Fi.CI.CHECKPATCH: warning for Refactor to expand subslice mask (rev 2) Patchwork
2019-08-21  0:02 ` ✗ Fi.CI.SPARSE: " Patchwork
2019-08-21  0:20 ` ✓ Fi.CI.BAT: success " Patchwork
2019-08-21 15:15 ` ✓ Fi.CI.IGT: " Patchwork
  -- strict thread matches above, loose matches on Subject: below --
2019-08-22 18:32 [PATCH 00/11] " Stuart Summers
2019-08-22 18:32 ` [PATCH 05/11] drm/i915: Use local variables for subslice_mask for device info Stuart Summers
2019-08-23 16:02 [PATCH 00/11] Refactor to expand subslice mask (rev 2) Stuart Summers
2019-08-23 16:03 ` [PATCH 05/11] drm/i915: Use local variables for subslice_mask for device info Stuart Summers

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