From: Changbin Du <changbin.du@xxxxxxxxx>
Add clear_pse operation in case we need to split huge gtt into small pages.
v2: correct description.
Signed-off-by: Changbin Du <changbin.du@xxxxxxxxx>
---
drivers/gpu/drm/i915/gvt/gtt.c | 19 +++++++++++++++++++
drivers/gpu/drm/i915/gvt/gtt.h | 1 +
2 files changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index f7bc8ff..0966ee7 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -390,6 +390,24 @@ static bool gen8_gtt_test_pse(struct intel_gvt_gtt_entry *e)
return !!(e->val64 & _PAGE_PSE);
}
+static void gen8_gtt_clear_pse(struct intel_gvt_gtt_entry *e)
+{
+ if (gen8_gtt_test_pse(e)) {
+ switch (e->type) {
+ case GTT_TYPE_PPGTT_PTE_2M_ENTRY:
+ e->val64 &= ~_PAGE_PSE;
+ e->type = GTT_TYPE_PPGTT_PDE_ENTRY;
+ break;
+ case GTT_TYPE_PPGTT_PTE_1G_ENTRY:
+ e->type = GTT_TYPE_PPGTT_PDP_ENTRY;
+ e->val64 &= ~_PAGE_PSE;
+ break;
+ default:
+ WARN_ON(1);
+ }
+ }
+}
+
static bool gen8_gtt_test_ips(struct intel_gvt_gtt_entry *e)
{
if (GEM_WARN_ON(e->type != GTT_TYPE_PPGTT_PDE_ENTRY))
@@ -477,6 +495,7 @@ 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_pse = gen8_gtt_clear_pse,
.clear_ips = gen8_gtt_clear_ips,
.test_ips = gen8_gtt_test_ips,
.clear_64k_splited = gen8_gtt_clear_64k_splited,
diff --git a/drivers/gpu/drm/i915/gvt/gtt.h b/drivers/gpu/drm/i915/gvt/gtt.h
index 162ef19..b7bf68c 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.h
+++ b/drivers/gpu/drm/i915/gvt/gtt.h
@@ -63,6 +63,7 @@ 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);
+ void (*clear_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);
bool (*test_64k_splited)(struct intel_gvt_gtt_entry *e);
--
2.7.4
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
