From: Changbin Du <changbin.du@xxxxxxxxx>
Add three IPS operation functions to test/set/clear IPS in PDE.
Signed-off-by: Changbin Du <changbin.du@xxxxxxxxx>
---
drivers/gpu/drm/i915/gvt/gtt.c | 18 ++++++++++++++++++
drivers/gpu/drm/i915/gvt/gtt.h | 2 ++
2 files changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 1fcc64a..cd2a227 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -400,6 +400,22 @@ static bool gen8_gtt_test_pse(struct intel_gvt_gtt_entry *e)
return true;
}
+static bool gen8_gtt_test_ips(struct intel_gvt_gtt_entry *e)
+{
+ if (GEM_WARN_ON(e->type != GTT_TYPE_PPGTT_PDE_ENTRY))
+ return false;
+
+ return !!(e->val64 & GEN8_PDE_IPS_64K);
+}
+
+static void gen8_gtt_clear_ips(struct intel_gvt_gtt_entry *e)
+{
+ if (GEM_WARN_ON(e->type != GTT_TYPE_PPGTT_PDE_ENTRY))
+ return;
+
+ e->val64 &= ~GEN8_PDE_IPS_64K;
+}
+
static bool gen8_gtt_test_present(struct intel_gvt_gtt_entry *e)
{
/*
@@ -456,6 +472,8 @@ static struct intel_gvt_gtt_pte_ops gen8_gtt_pte_ops = {
.set_present = gtt_entry_set_present,
.test_present = gen8_gtt_test_present,
.test_pse = gen8_gtt_test_pse,
+ .clear_ips = gen8_gtt_clear_ips,
+ .test_ips = gen8_gtt_test_ips,
.get_pfn = gen8_gtt_get_pfn,
.set_pfn = gen8_gtt_set_pfn,
};
diff --git a/drivers/gpu/drm/i915/gvt/gtt.h b/drivers/gpu/drm/i915/gvt/gtt.h
index 6063081..9257b74 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.h
+++ b/drivers/gpu/drm/i915/gvt/gtt.h
@@ -63,6 +63,8 @@ struct intel_gvt_gtt_pte_ops {
void (*clear_present)(struct intel_gvt_gtt_entry *e);
void (*set_present)(struct intel_gvt_gtt_entry *e);
bool (*test_pse)(struct intel_gvt_gtt_entry *e);
+ bool (*test_ips)(struct intel_gvt_gtt_entry *e);
+ void (*clear_ips)(struct intel_gvt_gtt_entry *e);
void (*set_pfn)(struct intel_gvt_gtt_entry *e, unsigned long pfn);
unsigned long (*get_pfn)(struct intel_gvt_gtt_entry *e);
};
--
2.7.4
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