From 237cb7a6918b8f3026fd1ec7aa02c1d3132a41c2 Mon Sep 17 00:00:00 2001
From: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Date: Thu, 17 Mar 2022 19:10:51 -0700
Subject: drm/i915/dg2: Add preemption changes for Wa_14015141709
Git-commit: ca6920811aa5428270dd78af0a7a36b10119065a
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Starting with DG2, preemption can no longer be controlled using userspace
on a per-context basis. Instead, the hardware only allows us to enable or
disable preemption in a global, system-wide basis. Also, we lose the
ability to specify the preemption granularity (such as batch-level vs
command-level vs object-level).
v2 (MattR):
- Move debugfs interface to a separate patch. (Jani)
v3 (MattR):
- Drop the debugfs support completely for now.
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Prathap Kumar Valsan <prathap.kumar.valsan@intel.com>
Cc: John Harrison <john.c.harrison@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220318021051.2073847-1-matthew.d.roper@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
drivers/gpu/drm/i915/i915_drv.h | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index c328d46f8095..dc0ffff6f655 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -2316,7 +2316,7 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
FF_DOP_CLOCK_GATE_DISABLE);
}
- if (IS_GRAPHICS_VER(i915, 9, 12)) {
+ if (HAS_PERCTX_PREEMPT_CTRL(i915)) {
/* FtrPerCtxtPreemptionGranularityControl:skl,bxt,kbl,cfl,cnl,icl,tgl */
wa_masked_en(wal,
GEN7_FF_SLICE_CS_CHICKEN1,
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 5b8accd79614..b56ee647274a 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1365,6 +1365,9 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
#define HAS_GUC_DEPRIVILEGE(dev_priv) \
(INTEL_INFO(dev_priv)->has_guc_deprivilege)
+#define HAS_PERCTX_PREEMPT_CTRL(i915) \
+ ((GRAPHICS_VER(i915) >= 9) && GRAPHICS_VER_FULL(i915) < IP_VER(12, 55))
+
#define HAS_D12_PLANE_MINIMIZATION(dev_priv) (IS_ROCKETLAKE(dev_priv) || \
IS_ALDERLAKE_S(dev_priv))
--
2.38.1