From: Kelvin Gardiner <kelvin.gardiner@xxxxxxxxx>
This patch adds support to detect ICL, slice, subslice and EU fuse
settings.
Add addresses for ICL 11 slice, subslice and EU fuses registers.
These register addresses are the same as previous platforms but the
format and / or the meaning of the information is different. Therefore
Gen11 defines for these registers are added.
Bspec: 9731
Bspec: 20643
Bspec: 20673
v2: Update fusing information storage after introducing the new query
uAPI (Lionel)
v3 (Oscar):
- The maximum number of slices in ICL 11 is 1
- The subslice disable fuse can potentially store information in
all bits
- GEN_MAX_SUBSLICES has to be increased to 8
- Don't trust the slice enabled fuse outside the max number of
expected slices
- Indentation fix and some reordering and renaming of local
variables
v4: Use single space after Cc tag
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Signed-off-by: Kelvin Gardiner <kelvin.gardiner@xxxxxxxxx>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 8 ++++++
drivers/gpu/drm/i915/intel_device_info.c | 43 +++++++++++++++++++++++++++++++-
drivers/gpu/drm/i915/intel_device_info.h | 2 +-
3 files changed, 51 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index dc41961..1f47806 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2554,6 +2554,14 @@ enum i915_power_well_id {
#define GEN11_GT_VEBOX_DISABLE_SHIFT 16
#define GEN11_GT_VEBOX_DISABLE_MASK (0xff << GEN11_GT_VEBOX_DISABLE_SHIFT)
+#define GEN11_EU_DISABLE _MMIO(0x9134)
+#define GEN11_EU_DIS_MASK 0xFF
+
+#define GEN11_GT_SLICE_ENABLE _MMIO(0x9138)
+#define GEN11_GT_S_ENA_MASK 0xFF
+
+#define GEN11_GT_SUBSLICE_DISABLE _MMIO(0x913C)
+
#define GEN6_BSD_SLEEP_PSMI_CONTROL _MMIO(0x12050)
#define GEN6_BSD_SLEEP_MSG_DISABLE (1 << 0)
#define GEN6_BSD_SLEEP_FLUSH_DISABLE (1 << 2)
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 4babfc6..a504281 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -158,6 +158,45 @@ static u16 compute_eu_total(const struct sseu_dev_info *sseu)
return total;
}
+static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
+{
+ struct sseu_dev_info *sseu = &mkwrite_device_info(dev_priv)->sseu;
+ u8 s_en;
+ u32 ss_en, ss_en_mask;
+ u8 eu_en;
+ int s;
+
+ sseu->max_slices = 1;
+ sseu->max_subslices = 8;
+ sseu->max_eus_per_subslice = 8;
+
+ s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
+ ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
+ ss_en_mask = BIT(sseu->max_subslices) - 1;
+ eu_en = ~(I915_READ(GEN11_EU_DISABLE) & GEN11_EU_DIS_MASK);
+
+ for (s = 0; s < sseu->max_slices; s++) {
+ if (s_en & BIT(s)) {
+ int ss_idx = sseu->max_subslices * s;
+ int ss;
+
+ sseu->slice_mask |= BIT(s);
+ sseu->subslice_mask[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);
+ }
+ }
+ }
+ sseu->eu_per_subslice = hweight8(eu_en);
+ sseu->eu_total = compute_eu_total(sseu);
+
+ /* ICL has no power gating restrictions. */
+ sseu->has_slice_pg = 1;
+ sseu->has_subslice_pg = 1;
+ sseu->has_eu_pg = 1;
+}
+
static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
{
struct sseu_dev_info *sseu = &mkwrite_device_info(dev_priv)->sseu;
@@ -768,8 +807,10 @@ void intel_device_info_runtime_init(struct intel_device_info *info)
broadwell_sseu_info_init(dev_priv);
else if (INTEL_GEN(dev_priv) == 9)
gen9_sseu_info_init(dev_priv);
- else if (INTEL_GEN(dev_priv) >= 10)
+ else if (INTEL_GEN(dev_priv) == 10)
gen10_sseu_info_init(dev_priv);
+ else if (INTEL_INFO(dev_priv)->gen >= 11)
+ gen11_sseu_info_init(dev_priv);
/* Initialize command stream timestamp frequency */
info->cs_timestamp_frequency_khz = read_timestamp_frequency(dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index 0cbb922..933e316 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -114,7 +114,7 @@ enum intel_platform {
func(has_ipc);
#define GEN_MAX_SLICES (6) /* CNL upper bound */
-#define GEN_MAX_SUBSLICES (7)
+#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
struct sseu_dev_info {
u8 slice_mask;
--
1.9.1
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