[Intel-gfx] [PATCH v6 02/14] drm/i915/gvt: Add PTE IPS bit operations

[changbin . du]

From: Changbin Du <changbin...@intel.com>

Add three IPS operation functions to test/set/clear IPS in PDE.

Signed-off-by: Changbin Du <changbin...@intel.com>
---
 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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