diff options
| author | Changbin Du <changbin.du@intel.com> | 2018-05-15 10:35:38 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2018-07-09 10:23:27 +0800 |
| commit | c3e697635fcc9173e1d7116d9ebfd2fd0887177d (patch) | |
| tree | c360858849126fda07ab0a98f2e88784e4ea8998 | |
| parent | 716348485695de1a91b2f8b398f9c08687f794af (diff) | |
drm/i915/gvt: Add GTT clear_pse operation
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@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/gtt.c | 19 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/gtt.h | 1 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c index 34c401fb37d1..d34dc9ab66e1 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 162ef19f4117..b7bf68cc8418 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); |