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Commit 6fd79378 authored by Changbin Du's avatar Changbin Du Committed by Zhenyu Wang
Browse files

drm/i915/gvt: Add PTE IPS bit operations 



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

Signed-off-by: default avatarChangbin Du <changbin.du@intel.com>
Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
parent b294657d

drivers/gpu/drm/i915/gvt/gtt.c

+18 −0
Original line number Diff line number Diff line
@@ -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,

};

drivers/gpu/drm/i915/gvt/gtt.h

+2 −0
Original line number Diff line number Diff line
@@ -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);

};