[PATCH 5/9] drm/i915: Add function to set subslices
Stuart Summers
stuart.summers at intel.com
Tue Jul 23 15:49:30 UTC 2019
Add a new function to set a range of subslices for a
specified slice based on a given mask.
Signed-off-by: Stuart Summers <stuart.summers at intel.com>
---
drivers/gpu/drm/i915/gt/intel_sseu.c | 10 +++++
drivers/gpu/drm/i915/gt/intel_sseu.h | 3 ++
drivers/gpu/drm/i915/intel_device_info.c | 53 ++++++++++++++----------
3 files changed, 45 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c
index 71abf0c9a46b..607c1447287c 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.c
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
@@ -30,6 +30,16 @@ intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
return total;
}
+void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
+ u32 ss_mask)
+{
+ int i, offset = slice * sseu->ss_stride;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ sseu->subslice_mask[offset + i] =
+ (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
+}
+
unsigned int
intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
{
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index fe22d5b18e67..2261d4e7d98b 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -75,6 +75,9 @@ intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
unsigned int
intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice);
+void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
+ u32 ss_mask);
+
u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
const struct intel_sseu *req_sseu);
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 7de7b7b540cb..22b59fdb31fc 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -206,7 +206,10 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
int ss;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
+
+ intel_sseu_set_subslices(sseu, s, (ss_en >> ss_idx) &
+ ss_en_mask);
+
for (ss = 0; ss < sseu->max_subslices; ss++) {
if (sseu->subslice_mask[s] & BIT(ss))
sseu_set_eus(sseu, s, ss, eu_en);
@@ -235,14 +238,6 @@ 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;
@@ -270,14 +265,25 @@ 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.
+ */
+ intel_sseu_set_subslices(sseu, s, s == 0 ?
+ subslice_mask_with_eus :
+ subslice_mask_with_eus & 0x3);
}
sseu->eu_total = compute_eu_total(sseu);
@@ -303,6 +309,7 @@ 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;
fuse = I915_READ(CHV_FUSE_GT);
@@ -316,7 +323,7 @@ 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 +334,12 @@ 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);
}
+ intel_sseu_set_subslices(sseu, 0, subslice_mask);
+
sseu->eu_total = compute_eu_total(sseu);
/*
@@ -383,7 +392,7 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
eu_disable = I915_READ(GEN9_EU_DISABLE(s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
@@ -490,7 +499,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
for (ss = 0; ss < sseu->max_subslices; ss++) {
u8 eu_disabled_mask;
@@ -541,6 +550,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse1;
int s, ss;
+ u32 subslice_mask;
/*
* There isn't a register to tell us how many slices/subslices. We
@@ -552,16 +562,15 @@ 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;
}
@@ -587,6 +596,8 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->eu_per_subslice);
for (s = 0; s < sseu->max_slices; s++) {
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
+
for (ss = 0; ss < sseu->max_subslices; ss++) {
sseu_set_eus(sseu, s, ss,
(1UL << sseu->eu_per_subslice) - 1);
--
2.21.0.5.gaeb582a983
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