linux-kernel - [PATCH v2 15/21] drm/i915: Add platform macro for selective tlb flush

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Date:   Thu, 14 Jul 2022 13:06:20 +0100
From:   Mauro Carvalho Chehab <mchehab@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Prathap Kumar Valsan <prathap.kumar.valsan@...el.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Niranjana Vishwanathapura <niranjana.vishwanathapura@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Subject: [PATCH v2 15/21] drm/i915: Add platform macro for selective tlb flush

From: Prathap Kumar Valsan <prathap.kumar.valsan@...el.com>

Add support for selective TLB invalidation, which is a platform
feature supported on XeHP.

Signed-off-by: Prathap Kumar Valsan <prathap.kumar.valsan@...el.com>
Cc: Niranjana Vishwanathapura <niranjana.vishwanathapura@...el.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH v2 00/21] at: https://lore.kernel.org/all/cover.1657800199.git.mchehab@kernel.org/

 drivers/gpu/drm/i915/i915_drv.h          | 3 +++
 drivers/gpu/drm/i915/i915_pci.c          | 1 +
 drivers/gpu/drm/i915/intel_device_info.h | 1 +
 3 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f1f70257dbe0..73494960a3a8 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1312,6 +1312,9 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 
 #define HAS_GT_UC(dev_priv)	(INTEL_INFO(dev_priv)->has_gt_uc)
 
+#define HAS_SELECTIVE_TLB_INVALIDATION(dev_priv) \
+	(INTEL_INFO(dev_priv)->has_selective_tlb_invalidation)
+
 #define HAS_POOLED_EU(dev_priv)	(INTEL_INFO(dev_priv)->has_pooled_eu)
 
 #define HAS_GLOBAL_MOCS_REGISTERS(dev_priv)	(INTEL_INFO(dev_priv)->has_global_mocs)
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index aacc10f2e73f..30d945fe384b 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -1022,6 +1022,7 @@ static const struct intel_device_info adl_p_info = {
 	.has_reset_engine = 1, \
 	.has_rps = 1, \
 	.has_runtime_pm = 1, \
+	.has_selective_tlb_invalidation = 1, \
 	.ppgtt_size = 48, \
 	.ppgtt_type = INTEL_PPGTT_FULL
 
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index 23bf230aa104..92a38b8f7c47 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -170,6 +170,7 @@ enum intel_ppgtt_type {
 	func(has_rc6p); \
 	func(has_rps); \
 	func(has_runtime_pm); \
+	func(has_selective_tlb_invalidation); \
 	func(has_snoop); \
 	func(has_coherent_ggtt); \
 	func(unfenced_needs_alignment); \
-- 
2.36.1