[PATCH 2/5] drm/i915: Promote IS_BROADWELL to a simple macro

[PATCH 2/5] drm/i915: Promote IS_BROADWELL to a simple macro

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

If we allow it a dedicated flag in dev_priv we enable the
compiler to nicely optimize conditions like IS_HASSWELL ||
IS_BROADWELL.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c | 4 ++++
 drivers/gpu/drm/i915/i915_drv.h | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 9fd221c97275..da6532da44e3 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -300,22 +300,26 @@ static const struct intel_device_info intel_haswell_m_info = {
 static const struct intel_device_info intel_broadwell_d_info = {
 	BDW_FEATURES,
 	.gen = 8,
+	.is_broadwell = 1,
 };
 
 static const struct intel_device_info intel_broadwell_m_info = {
 	BDW_FEATURES,
 	.gen = 8, .is_mobile = 1,
+	.is_broadwell = 1,
 };
 
 static const struct intel_device_info intel_broadwell_gt3d_info = {
 	BDW_FEATURES,
 	.gen = 8,
+	.is_broadwell = 1,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
 };
 
 static const struct intel_device_info intel_broadwell_gt3m_info = {
 	BDW_FEATURES,
 	.gen = 8, .is_mobile = 1,
+	.is_broadwell = 1,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
 };
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 558978af1f2e..5d03f389b912 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -735,6 +735,7 @@ struct intel_csr {
 	func(is_valleyview) sep \
 	func(is_cherryview) sep \
 	func(is_haswell) sep \
+	func(is_broadwell) sep \
 	func(is_skylake) sep \
 	func(is_broxton) sep \
 	func(is_kabylake) sep \
@@ -2553,7 +2554,7 @@ struct drm_i915_cmd_table {
 #define IS_VALLEYVIEW(dev)	(INTEL_INFO(dev)->is_valleyview)
 #define IS_CHERRYVIEW(dev)	(INTEL_INFO(dev)->is_cherryview)
 #define IS_HASWELL(dev)	(INTEL_INFO(dev)->is_haswell)
-#define IS_BROADWELL(dev)	(!INTEL_INFO(dev)->is_cherryview && IS_GEN8(dev))
+#define IS_BROADWELL(dev)	(INTEL_INFO(dev)->is_broadwell)
 #define IS_SKYLAKE(dev)	(INTEL_INFO(dev)->is_skylake)
 #define IS_BROXTON(dev)		(INTEL_INFO(dev)->is_broxton)
 #define IS_KABYLAKE(dev)	(INTEL_INFO(dev)->is_kabylake)
-- 
1.9.1

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[PATCH 2/5] drm/i915: Promote IS_BROADWELL to a simple macro

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

If we allow it a dedicated flag in dev_priv we enable the
compiler to nicely optimize conditions like IS_HASSWELL ||
IS_BROADWELL.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_drv.c | 4 ++++
 drivers/gpu/drm/i915/i915_drv.h | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index e8f7a097073c..d22ad631fc7d 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -300,22 +300,26 @@ static const struct intel_device_info intel_haswell_m_info = {
 static const struct intel_device_info intel_broadwell_d_info = {
 	BDW_FEATURES,
 	.gen = 8,
+	.is_broadwell = 1,
 };
 
 static const struct intel_device_info intel_broadwell_m_info = {
 	BDW_FEATURES,
 	.gen = 8, .is_mobile = 1,
+	.is_broadwell = 1,
 };
 
 static const struct intel_device_info intel_broadwell_gt3d_info = {
 	BDW_FEATURES,
 	.gen = 8,
+	.is_broadwell = 1,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
 };
 
 static const struct intel_device_info intel_broadwell_gt3m_info = {
 	BDW_FEATURES,
 	.gen = 8, .is_mobile = 1,
+	.is_broadwell = 1,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
 };
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index a7db2841d705..7a7c9e521424 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -735,6 +735,7 @@ struct intel_csr {
 	func(is_valleyview) sep \
 	func(is_cherryview) sep \
 	func(is_haswell) sep \
+	func(is_broadwell) sep \
 	func(is_skylake) sep \
 	func(is_broxton) sep \
 	func(is_kabylake) sep \
@@ -2553,7 +2554,7 @@ struct drm_i915_cmd_table {
 #define IS_VALLEYVIEW(dev)	(INTEL_INFO(dev)->is_valleyview)
 #define IS_CHERRYVIEW(dev)	(INTEL_INFO(dev)->is_cherryview)
 #define IS_HASWELL(dev)	(INTEL_INFO(dev)->is_haswell)
-#define IS_BROADWELL(dev)	(!INTEL_INFO(dev)->is_cherryview && IS_GEN8(dev))
+#define IS_BROADWELL(dev)	(INTEL_INFO(dev)->is_broadwell)
 #define IS_SKYLAKE(dev)	(INTEL_INFO(dev)->is_skylake)
 #define IS_BROXTON(dev)		(INTEL_INFO(dev)->is_broxton)
 #define IS_KABYLAKE(dev)	(INTEL_INFO(dev)->is_kabylake)
-- 
1.9.1

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[PATCH 1/5] drm/i915: Make IS_GENx macros work on a mask

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

If instead of numerical comparison me make these test a
bitmask, we enable the compiler to optimize all instances
of IS_GENx || IS_GENy.

v2: Make bit zero of gen mask mean gen 1.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_dma.c     |  3 +++
 drivers/gpu/drm/i915/i915_drv.h     | 17 +++++++++--------
 drivers/gpu/drm/i915/intel_uncore.c |  4 ++--
 3 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 46ac1da64a09..ef2e91d52c5e 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1072,6 +1072,9 @@ static int i915_driver_init_early(struct drm_i915_private *dev_priv,
 	memcpy(device_info, info, sizeof(dev_priv->info));
 	device_info->device_id = dev->pdev->device;
 
+	BUG_ON(device_info->gen > sizeof(device_info->gen_mask) * BITS_PER_BYTE);
+	device_info->gen_mask = BIT(device_info->gen - 1);
+
 	spin_lock_init(&dev_priv->irq_lock);
 	spin_lock_init(&dev_priv->gpu_error.lock);
 	mutex_init(&dev_priv->backlight_lock);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 26e7de415966..a7db2841d705 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -760,6 +760,7 @@ struct intel_device_info {
 	u8 num_pipes:3;
 	u8 num_sprites[I915_MAX_PIPES];
 	u8 gen;
+	u16 gen_mask;
 	u8 ring_mask; /* Rings supported by the HW */
 	DEV_INFO_FOR_EACH_FLAG(DEFINE_FLAG, SEP_SEMICOLON);
 	/* Register offsets for the various display pipes and transcoders */
@@ -2620,14 +2621,14 @@ struct drm_i915_cmd_table {
  * have their own (e.g. HAS_PCH_SPLIT for ILK+ display, IS_foo for particular
  * chips, etc.).
  */
-#define IS_GEN2(dev)	(INTEL_INFO(dev)->gen == 2)
-#define IS_GEN3(dev)	(INTEL_INFO(dev)->gen == 3)
-#define IS_GEN4(dev)	(INTEL_INFO(dev)->gen == 4)
-#define IS_GEN5(dev)	(INTEL_INFO(dev)->gen == 5)
-#define IS_GEN6(dev)	(INTEL_INFO(dev)->gen == 6)
-#define IS_GEN7(dev)	(INTEL_INFO(dev)->gen == 7)
-#define IS_GEN8(dev)	(INTEL_INFO(dev)->gen == 8)
-#define IS_GEN9(dev)	(INTEL_INFO(dev)->gen == 9)
+#define IS_GEN2(dev)	(INTEL_INFO(dev)->gen_mask & BIT(1))
+#define IS_GEN3(dev)	(INTEL_INFO(dev)->gen_mask & BIT(2))
+#define IS_GEN4(dev)	(INTEL_INFO(dev)->gen_mask & BIT(3))
+#define IS_GEN5(dev)	(INTEL_INFO(dev)->gen_mask & BIT(4))
+#define IS_GEN6(dev)	(INTEL_INFO(dev)->gen_mask & BIT(5))
+#define IS_GEN7(dev)	(INTEL_INFO(dev)->gen_mask & BIT(6))
+#define IS_GEN8(dev)	(INTEL_INFO(dev)->gen_mask & BIT(7))
+#define IS_GEN9(dev)	(INTEL_INFO(dev)->gen_mask & BIT(8))
 
 #define RENDER_RING		(1<<RCS)
 #define BSD_RING		(1<<VCS)
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 4ea2bf2c2a4a..b7b8a299fd0a 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -1398,7 +1398,7 @@ void intel_uncore_fini(struct drm_device *dev)
 	intel_uncore_forcewake_reset(dev, false);
 }
 
-#define GEN_RANGE(l, h) GENMASK(h, l)
+#define GEN_RANGE(l, h) GENMASK((h) - 1, (l) - 1)
 
 static const struct register_whitelist {
 	i915_reg_t offset_ldw, offset_udw;
@@ -1423,7 +1423,7 @@ int i915_reg_read_ioctl(struct drm_device *dev,
 
 	for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) {
 		if (i915_mmio_reg_offset(entry->offset_ldw) == (reg->offset & -entry->size) &&
-		    (1 << INTEL_INFO(dev)->gen & entry->gen_bitmask))
+		    (INTEL_INFO(dev)->gen_mask & entry->gen_bitmask))
 			break;
 	}
 
-- 
1.9.1

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[PATCH 2/5] drm/i915: Promote IS_BROADWELL to a simple macro

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

If we allow it a dedicated flag in dev_priv we enable the
compiler to nicely optimize conditions like IS_HASSWELL ||
IS_BROADWELL.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_drv.c | 4 ++++
 drivers/gpu/drm/i915/i915_drv.h | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index e8f7a097073c..d22ad631fc7d 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -300,22 +300,26 @@ static const struct intel_device_info intel_haswell_m_info = {
 static const struct intel_device_info intel_broadwell_d_info = {
 	BDW_FEATURES,
 	.gen = 8,
+	.is_broadwell = 1,
 };
 
 static const struct intel_device_info intel_broadwell_m_info = {
 	BDW_FEATURES,
 	.gen = 8, .is_mobile = 1,
+	.is_broadwell = 1,
 };
 
 static const struct intel_device_info intel_broadwell_gt3d_info = {
 	BDW_FEATURES,
 	.gen = 8,
+	.is_broadwell = 1,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
 };
 
 static const struct intel_device_info intel_broadwell_gt3m_info = {
 	BDW_FEATURES,
 	.gen = 8, .is_mobile = 1,
+	.is_broadwell = 1,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
 };
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index a7db2841d705..7a7c9e521424 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -735,6 +735,7 @@ struct intel_csr {
 	func(is_valleyview) sep \
 	func(is_cherryview) sep \
 	func(is_haswell) sep \
+	func(is_broadwell) sep \
 	func(is_skylake) sep \
 	func(is_broxton) sep \
 	func(is_kabylake) sep \
@@ -2553,7 +2554,7 @@ struct drm_i915_cmd_table {
 #define IS_VALLEYVIEW(dev)	(INTEL_INFO(dev)->is_valleyview)
 #define IS_CHERRYVIEW(dev)	(INTEL_INFO(dev)->is_cherryview)
 #define IS_HASWELL(dev)	(INTEL_INFO(dev)->is_haswell)
-#define IS_BROADWELL(dev)	(!INTEL_INFO(dev)->is_cherryview && IS_GEN8(dev))
+#define IS_BROADWELL(dev)	(INTEL_INFO(dev)->is_broadwell)
 #define IS_SKYLAKE(dev)	(INTEL_INFO(dev)->is_skylake)
 #define IS_BROXTON(dev)		(INTEL_INFO(dev)->is_broxton)
 #define IS_KABYLAKE(dev)	(INTEL_INFO(dev)->is_kabylake)
-- 
1.9.1

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[PATCH 3/5] drm/i915: Replace "INTEL_INFO->gen == x" checks with IS_GENx

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

This way optimization from a previous patch works even better.

v2: Rebase.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c     | 4 ++--
 drivers/gpu/drm/i915/i915_dma.c         | 4 ++--
 drivers/gpu/drm/i915/i915_drv.h         | 2 +-
 drivers/gpu/drm/i915/i915_gem.c         | 2 +-
 drivers/gpu/drm/i915/i915_gem_stolen.c  | 2 +-
 drivers/gpu/drm/i915/i915_gem_tiling.c  | 2 +-
 drivers/gpu/drm/i915/i915_gpu_error.c   | 2 +-
 drivers/gpu/drm/i915/i915_irq.c         | 4 ++--
 drivers/gpu/drm/i915/intel_display.c    | 2 +-
 drivers/gpu/drm/i915/intel_lvds.c       | 2 +-
 drivers/gpu/drm/i915/intel_pm.c         | 4 ++--
 drivers/gpu/drm/i915/intel_ringbuffer.c | 2 +-
 12 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 6698957ede3f..7810c8386337 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2310,12 +2310,12 @@ static void gen6_ppgtt_info(struct seq_file *m, struct drm_device *dev)
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_engine_cs *engine;
 
-	if (INTEL_INFO(dev)->gen == 6)
+	if (IS_GEN6(dev_priv))
 		seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
 
 	for_each_engine(engine, dev_priv) {
 		seq_printf(m, "%s\n", engine->name);
-		if (INTEL_INFO(dev)->gen == 7)
+		if (IS_GEN7(dev_priv))
 			seq_printf(m, "GFX_MODE: 0x%08x\n",
 				   I915_READ(RING_MODE_GEN7(engine)));
 		seq_printf(m, "PP_DIR_BASE: 0x%08x\n",
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index ef2e91d52c5e..bc18e10c2fef 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -888,7 +888,7 @@ static void intel_device_info_runtime_init(struct drm_device *dev)
 		DRM_INFO("Display disabled (module parameter)\n");
 		info->num_pipes = 0;
 	} else if (info->num_pipes > 0 &&
-		   (INTEL_INFO(dev)->gen == 7 || INTEL_INFO(dev)->gen == 8) &&
+		   (IS_GEN7(dev_priv) || IS_GEN8(dev_priv)) &&
 		   HAS_PCH_SPLIT(dev)) {
 		u32 fuse_strap = I915_READ(FUSE_STRAP);
 		u32 sfuse_strap = I915_READ(SFUSE_STRAP);
@@ -912,7 +912,7 @@ static void intel_device_info_runtime_init(struct drm_device *dev)
 			DRM_INFO("PipeC fused off\n");
 			info->num_pipes -= 1;
 		}
-	} else if (info->num_pipes > 0 && INTEL_INFO(dev)->gen == 9) {
+	} else if (info->num_pipes > 0 && IS_GEN9(dev_priv)) {
 		u32 dfsm = I915_READ(SKL_DFSM);
 		u8 disabled_mask = 0;
 		bool invalid;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 7a7c9e521424..69fdf84a3e28 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2702,7 +2702,7 @@ struct drm_i915_cmd_table {
 				 IS_CHERRYVIEW(dev) || IS_SKYLAKE(dev) || \
 				 IS_KABYLAKE(dev) || IS_BROXTON(dev))
 #define HAS_RC6(dev)		(INTEL_INFO(dev)->gen >= 6)
-#define HAS_RC6p(dev)		(INTEL_INFO(dev)->gen == 6 || IS_IVYBRIDGE(dev))
+#define HAS_RC6p(dev)		(IS_GEN6(dev) || IS_IVYBRIDGE(dev))
 
 #define HAS_CSR(dev)	(IS_GEN9(dev))
 
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index c99d1b2c65d4..b569eaec72b0 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1981,7 +1981,7 @@ i915_gem_get_gtt_size(struct drm_device *dev, uint32_t size, int tiling_mode)
 		return size;
 
 	/* Previous chips need a power-of-two fence region when tiling */
-	if (INTEL_INFO(dev)->gen == 3)
+	if (IS_GEN3(dev))
 		gtt_size = 1024*1024;
 	else
 		gtt_size = 512*1024;
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 68fde8fba803..f9253f2b7ba0 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -56,7 +56,7 @@ int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *dev_priv,
 
 	/* See the comment at the drm_mm_init() call for more about this check.
 	 * WaSkipStolenMemoryFirstPage:bdw,chv (incomplete) */
-	if (INTEL_INFO(dev_priv)->gen == 8 && start < 4096)
+	if (IS_GEN8(dev_priv) && start < 4096)
 		start = 4096;
 
 	mutex_lock(&dev_priv->mm.stolen_lock);
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index 829dab69895f..2fcb4afade19 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -125,7 +125,7 @@ i915_gem_object_fence_ok(struct drm_i915_gem_object *obj, int tiling_mode)
 	if (INTEL_INFO(obj->base.dev)->gen >= 4)
 		return true;
 
-	if (INTEL_INFO(obj->base.dev)->gen == 3) {
+	if (IS_GEN3(obj->base.dev)) {
 		if (i915_gem_obj_ggtt_offset(obj) & ~I915_FENCE_START_MASK)
 			return false;
 	} else {
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 0f6002cb86f4..34ff2459ceea 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -411,7 +411,7 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
 		err_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
 	}
 
-	if (INTEL_INFO(dev)->gen == 7)
+	if (IS_GEN7(dev))
 		err_printf(m, "ERR_INT: 0x%08x\n", error->err_int);
 
 	for (i = 0; i < ARRAY_SIZE(error->ring); i++)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index a163037ddbd8..815dbbebc835 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -4644,12 +4644,12 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
 		dev->driver->disable_vblank = ironlake_disable_vblank;
 		dev_priv->display.hpd_irq_setup = ilk_hpd_irq_setup;
 	} else {
-		if (INTEL_INFO(dev_priv)->gen == 2) {
+		if (IS_GEN2(dev_priv)) {
 			dev->driver->irq_preinstall = i8xx_irq_preinstall;
 			dev->driver->irq_postinstall = i8xx_irq_postinstall;
 			dev->driver->irq_handler = i8xx_irq_handler;
 			dev->driver->irq_uninstall = i8xx_irq_uninstall;
-		} else if (INTEL_INFO(dev_priv)->gen == 3) {
+		} else if (IS_GEN3(dev_priv)) {
 			dev->driver->irq_preinstall = i915_irq_preinstall;
 			dev->driver->irq_postinstall = i915_irq_postinstall;
 			dev->driver->irq_uninstall = i915_irq_uninstall;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index da1929a48c19..d067098862ba 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1204,7 +1204,7 @@ static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
 	u32 val;
 
 	/* ILK FDI PLL is always enabled */
-	if (INTEL_INFO(dev_priv)->gen == 5)
+	if (IS_GEN5(dev_priv))
 		return;
 
 	/* On Haswell, DDI ports are responsible for the FDI PLL setup */
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index bc53c0dd34d0..d65fd945607a 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -190,7 +190,7 @@ static void intel_pre_enable_lvds(struct intel_encoder *encoder)
 	/* Set the dithering flag on LVDS as needed, note that there is no
 	 * special lvds dither control bit on pch-split platforms, dithering is
 	 * only controlled through the PIPECONF reg. */
-	if (INTEL_INFO(dev)->gen == 4) {
+	if (IS_GEN4(dev_priv)) {
 		/* Bspec wording suggests that LVDS port dithering only exists
 		 * for 18bpp panels. */
 		if (crtc->config->dither && crtc->config->pipe_bpp == 18)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 2365db0e5a58..27afa858cc1a 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2146,14 +2146,14 @@ static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[8])
 static void intel_fixup_spr_wm_latency(struct drm_device *dev, uint16_t wm[5])
 {
 	/* ILK sprite LP0 latency is 1300 ns */
-	if (INTEL_INFO(dev)->gen == 5)
+	if (IS_GEN5(dev))
 		wm[0] = 13;
 }
 
 static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5])
 {
 	/* ILK cursor LP0 latency is 1300 ns */
-	if (INTEL_INFO(dev)->gen == 5)
+	if (IS_GEN5(dev))
 		wm[0] = 13;
 
 	/* WaDoubleCursorLP3Latency:ivb */
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index e17a682dd621..84b22a57cc1c 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -2503,7 +2503,7 @@ void intel_ring_init_seqno(struct intel_engine_cs *engine, u32 seqno)
 	 * the semaphore value, then when the seqno moves backwards all
 	 * future waits will complete instantly (causing rendering corruption).
 	 */
-	if (INTEL_INFO(dev_priv)->gen == 6 || INTEL_INFO(dev_priv)->gen == 7) {
+	if (IS_GEN6(dev_priv) || IS_GEN7(dev_priv)) {
 		I915_WRITE(RING_SYNC_0(engine->mmio_base), 0);
 		I915_WRITE(RING_SYNC_1(engine->mmio_base), 0);
 		if (HAS_VEBOX(dev_priv))
-- 
1.9.1

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[PATCH 4/5] drm/i915: Do not use a bitfield for INTEL_INFO->num_pipes

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

It just makes more work for the compiler and generates more code.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_drv.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 69fdf84a3e28..6eb26a93bcbb 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -758,7 +758,7 @@ struct intel_csr {
 struct intel_device_info {
 	u32 display_mmio_offset;
 	u16 device_id;
-	u8 num_pipes:3;
+	u8 num_pipes;
 	u8 num_sprites[I915_MAX_PIPES];
 	u8 gen;
 	u16 gen_mask;
-- 
1.9.1

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[PATCH 5/5] drm/i915: Introduce IS_GEN macro

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

To be used for more efficient Gen range checking.

v2: Remove spurious chunk. (Chris Wilson)
v3: Rebase.
v4: Renamed from INTEL_GEN_RANGE and added GEN_FOREVER.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v3)
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Dave Gordon <david.s.gordon@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h         | 22 +++++++++++++++++++++-
 drivers/gpu/drm/i915/intel_fbc.c        |  2 +-
 drivers/gpu/drm/i915/intel_ringbuffer.c |  8 ++++----
 3 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 6eb26a93bcbb..4393a88c8837 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2519,9 +2519,29 @@ struct drm_i915_cmd_table {
 #define INTEL_INFO(p) 	(&__I915__(p)->info)
 #define INTEL_GEN(p)	(INTEL_INFO(p)->gen)
 #define INTEL_DEVID(p)	(INTEL_INFO(p)->device_id)
-#define INTEL_REVID(p)	(__I915__(p)->dev->pdev->revision)
 
 #define REVID_FOREVER		0xff
+#define INTEL_REVID(p)	(__I915__(p)->dev->pdev->revision)
+
+#define GEN_FOREVER (0)
+/*
+ * Returns true if Gen is in inclusive range [Start, End].
+ *
+ * Use GEN_FOREVER for unbound start and or end.
+ */
+#define IS_GEN(p, s, e) ({ \
+	unsigned int __s = (s), __e = (e); \
+	BUILD_BUG_ON(!__builtin_constant_p(s)); \
+	BUILD_BUG_ON(!__builtin_constant_p(e)); \
+	if ((__s) != GEN_FOREVER) \
+		__s = (s) - 1; \
+	if ((__e) == GEN_FOREVER) \
+		__e = BITS_PER_LONG - 1; \
+	else \
+		__e = (e) - 1; \
+	!!(INTEL_INFO(p)->gen_mask & GENMASK((__e), (__s))); \
+})
+
 /*
  * Return true if revision is in range [since,until] inclusive.
  *
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 4a527d3cf026..0dea5fbcd8aa 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -740,7 +740,7 @@ static void intel_fbc_update_state_cache(struct intel_crtc *crtc)
 
 	/* FIXME: We lack the proper locking here, so only run this on the
 	 * platforms that need. */
-	if (INTEL_INFO(dev_priv)->gen >= 5 && INTEL_INFO(dev_priv)->gen < 7)
+	if (IS_GEN(dev_priv, 5, 6))
 		cache->fb.ilk_ggtt_offset = i915_gem_obj_ggtt_offset(obj);
 	cache->fb.pixel_format = fb->pixel_format;
 	cache->fb.stride = fb->pitches[0];
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 84b22a57cc1c..0618dd34c3ec 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -506,7 +506,7 @@ static void intel_ring_setup_status_page(struct intel_engine_cs *engine)
 	 * arises: do we still need this and if so how should we go about
 	 * invalidating the TLB?
 	 */
-	if (INTEL_GEN(dev_priv) >= 6 && INTEL_GEN(dev_priv) < 8) {
+	if (IS_GEN(dev_priv, 6, 7)) {
 		i915_reg_t reg = RING_INSTPM(engine->mmio_base);
 
 		/* ring should be idle before issuing a sync flush*/
@@ -1206,7 +1206,7 @@ static int init_render_ring(struct intel_engine_cs *engine)
 		return ret;
 
 	/* WaTimedSingleVertexDispatch:cl,bw,ctg,elk,ilk,snb */
-	if (INTEL_GEN(dev_priv) >= 4 && INTEL_GEN(dev_priv) < 7)
+	if (IS_GEN(dev_priv, 4, 6))
 		I915_WRITE(MI_MODE, _MASKED_BIT_ENABLE(VS_TIMER_DISPATCH));
 
 	/* We need to disable the AsyncFlip performance optimisations in order
@@ -1215,7 +1215,7 @@ static int init_render_ring(struct intel_engine_cs *engine)
 	 *
 	 * WaDisableAsyncFlipPerfMode:snb,ivb,hsw,vlv
 	 */
-	if (INTEL_GEN(dev_priv) >= 6 && INTEL_GEN(dev_priv) < 8)
+	if (IS_GEN(dev_priv, 6, 7))
 		I915_WRITE(MI_MODE, _MASKED_BIT_ENABLE(ASYNC_FLIP_PERF_DISABLE));
 
 	/* Required for the hardware to program scanline values for waiting */
@@ -1240,7 +1240,7 @@ static int init_render_ring(struct intel_engine_cs *engine)
 			   _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB));
 	}
 
-	if (INTEL_GEN(dev_priv) >= 6 && INTEL_GEN(dev_priv) < 8)
+	if (IS_GEN(dev_priv, 6, 7))
 		I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_FORCE_ORDERING));
 
 	if (HAS_L3_DPF(dev_priv))
-- 
1.9.1

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✓ Ro.CI.BAT: success for series starting with [1/5] drm/i915: Make IS_GENx macros work on a mask

[Patchwork]

== Series Details ==

Series: series starting with [1/5] drm/i915: Make IS_GENx macros work on a mask
URL   : https://patchwork.freedesktop.org/series/6960/
State : success

== Summary ==

Series 6960v1 Series without cover letter
http://patchwork.freedesktop.org/api/1.0/series/6960/revisions/1/mbox


ro-bdw-i5-5250u  total:219  pass:202  dwarn:4   dfail:0   fail:0   skip:13 
ro-bdw-i7-5600u  total:219  pass:187  dwarn:0   dfail:0   fail:0   skip:32 
ro-bsw-n3050     total:219  pass:174  dwarn:0   dfail:0   fail:3   skip:42 
ro-byt-n2820     total:218  pass:173  dwarn:0   dfail:0   fail:4   skip:41 
ro-hsw-i3-4010u  total:218  pass:193  dwarn:0   dfail:0   fail:0   skip:25 
ro-hsw-i7-4770r  total:219  pass:194  dwarn:0   dfail:0   fail:0   skip:25 
ro-ilk-i7-620lm  total:219  pass:151  dwarn:0   dfail:0   fail:1   skip:67 
ro-ilk1-i5-650   total:214  pass:151  dwarn:0   dfail:0   fail:2   skip:61 
ro-ivb-i7-3770   total:219  pass:183  dwarn:0   dfail:0   fail:0   skip:36 
ro-ivb2-i7-3770  total:219  pass:186  dwarn:0   dfail:0   fail:1   skip:32 
ro-skl-i7-6700hq total:214  pass:190  dwarn:0   dfail:0   fail:0   skip:24 
ro-snb-i7-2620M  total:219  pass:177  dwarn:0   dfail:0   fail:1   skip:41 
ro-bdw-i7-5557U failed to connect after reboot

Results at /archive/results/CI_IGT_test/RO_Patchwork_853/

2d4abf3 drm-intel-nightly: 2016y-05m-10d-09h-36m-54s UTC integration manifest
297c061 drm/i915: Introduce IS_GEN macro
109b940 drm/i915: Do not use a bitfield for INTEL_INFO->num_pipes
9da72cb drm/i915: Replace "INTEL_INFO->gen == x" checks with IS_GENx
fc48dc0 drm/i915: Promote IS_BROADWELL to a simple macro
714dc4c drm/i915: Make IS_GENx macros work on a mask

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Re: ✓ Ro.CI.BAT: success for series starting with [1/5] drm/i915: Make IS_GENx macros work on a mask

[Tvrtko Ursulin]

On 10/05/16 20:53, Patchwork wrote:
> == Series Details ==
>
> Series: series starting with [1/5] drm/i915: Make IS_GENx macros work on a mask
> URL   : https://patchwork.freedesktop.org/series/6960/
> State : success
>
> == Summary ==
>
> Series 6960v1 Series without cover letter
> http://patchwork.freedesktop.org/api/1.0/series/6960/revisions/1/mbox
>
>
> ro-bdw-i5-5250u  total:219  pass:202  dwarn:4   dfail:0   fail:0   skip:13
> ro-bdw-i7-5600u  total:219  pass:187  dwarn:0   dfail:0   fail:0   skip:32
> ro-bsw-n3050     total:219  pass:174  dwarn:0   dfail:0   fail:3   skip:42
> ro-byt-n2820     total:218  pass:173  dwarn:0   dfail:0   fail:4   skip:41
> ro-hsw-i3-4010u  total:218  pass:193  dwarn:0   dfail:0   fail:0   skip:25
> ro-hsw-i7-4770r  total:219  pass:194  dwarn:0   dfail:0   fail:0   skip:25
> ro-ilk-i7-620lm  total:219  pass:151  dwarn:0   dfail:0   fail:1   skip:67
> ro-ilk1-i5-650   total:214  pass:151  dwarn:0   dfail:0   fail:2   skip:61
> ro-ivb-i7-3770   total:219  pass:183  dwarn:0   dfail:0   fail:0   skip:36
> ro-ivb2-i7-3770  total:219  pass:186  dwarn:0   dfail:0   fail:1   skip:32
> ro-skl-i7-6700hq total:214  pass:190  dwarn:0   dfail:0   fail:0   skip:24
> ro-snb-i7-2620M  total:219  pass:177  dwarn:0   dfail:0   fail:1   skip:41
> ro-bdw-i7-5557U failed to connect after reboot
>
> Results at /archive/results/CI_IGT_test/RO_Patchwork_853/
>
> 2d4abf3 drm-intel-nightly: 2016y-05m-10d-09h-36m-54s UTC integration manifest
> 297c061 drm/i915: Introduce IS_GEN macro
> 109b940 drm/i915: Do not use a bitfield for INTEL_INFO->num_pipes
> 9da72cb drm/i915: Replace "INTEL_INFO->gen == x" checks with IS_GENx
> fc48dc0 drm/i915: Promote IS_BROADWELL to a simple macro
> 714dc4c drm/i915: Make IS_GENx macros work on a mask

5/5 needs an r-b if anyone is in the mood and then the series is good to 
merge.

Thanks,

Tvrtko
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Re: [PATCH 5/5] drm/i915: Introduce IS_GEN macro

[Joonas Lahtinen]

On ti, 2016-05-10 at 10:57 +0100, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> 
> To be used for more efficient Gen range checking.
> 
> v2: Remove spurious chunk. (Chris Wilson)
> v3: Rebase.
> v4: Renamed from INTEL_GEN_RANGE and added GEN_FOREVER.
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v3)

Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Jani Nikula <jani.nikula@intel.com>
> Cc: Dave Gordon <david.s.gordon@intel.com>
> ---
>  drivers/gpu/drm/i915/i915_drv.h         | 22 +++++++++++++++++++++-
>  drivers/gpu/drm/i915/intel_fbc.c        |  2 +-
>  drivers/gpu/drm/i915/intel_ringbuffer.c |  8 ++++----
>  3 files changed, 26 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 6eb26a93bcbb..4393a88c8837 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -2519,9 +2519,29 @@ struct drm_i915_cmd_table {
>  #define INTEL_INFO(p) 	(&__I915__(p)->info)
>  #define INTEL_GEN(p)	(INTEL_INFO(p)->gen)
>  #define INTEL_DEVID(p)	(INTEL_INFO(p)->device_id)
> -#define INTEL_REVID(p)	(__I915__(p)->dev->pdev->revision)
>  
>  #define REVID_FOREVER		0xff
> +#define INTEL_REVID(p)	(__I915__(p)->dev->pdev->revision)
> +
> +#define GEN_FOREVER (0)
> +/*
> + * Returns true if Gen is in inclusive range [Start, End].
> + *
> + * Use GEN_FOREVER for unbound start and or end.
> + */
> +#define IS_GEN(p, s, e) ({ \
> +	unsigned int __s = (s), __e = (e); \
> +	BUILD_BUG_ON(!__builtin_constant_p(s)); \
> +	BUILD_BUG_ON(!__builtin_constant_p(e)); \
> +	if ((__s) != GEN_FOREVER) \
> +		__s = (s) - 1; \
> +	if ((__e) == GEN_FOREVER) \
> +		__e = BITS_PER_LONG - 1; \
> +	else \
> +		__e = (e) - 1; \
> +	!!(INTEL_INFO(p)->gen_mask & GENMASK((__e), (__s))); \
> +})
> +
>  /*
>   * Return true if revision is in range [since,until] inclusive.
>   *
> diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
> index 4a527d3cf026..0dea5fbcd8aa 100644
> --- a/drivers/gpu/drm/i915/intel_fbc.c
> +++ b/drivers/gpu/drm/i915/intel_fbc.c
> @@ -740,7 +740,7 @@ static void intel_fbc_update_state_cache(struct intel_crtc *crtc)
>  
>  	/* FIXME: We lack the proper locking here, so only run this on the
>  	 * platforms that need. */
> -	if (INTEL_INFO(dev_priv)->gen >= 5 && INTEL_INFO(dev_priv)->gen < 7)
> +	if (IS_GEN(dev_priv, 5, 6))
>  		cache->fb.ilk_ggtt_offset = i915_gem_obj_ggtt_offset(obj);
>  	cache->fb.pixel_format = fb->pixel_format;
>  	cache->fb.stride = fb->pitches[0];
> diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
> index 84b22a57cc1c..0618dd34c3ec 100644
> --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> @@ -506,7 +506,7 @@ static void intel_ring_setup_status_page(struct intel_engine_cs *engine)
>  	 * arises: do we still need this and if so how should we go about
>  	 * invalidating the TLB?
>  	 */
> -	if (INTEL_GEN(dev_priv) >= 6 && INTEL_GEN(dev_priv) < 8) {
> +	if (IS_GEN(dev_priv, 6, 7)) {
>  		i915_reg_t reg = RING_INSTPM(engine->mmio_base);
>  
>  		/* ring should be idle before issuing a sync flush*/
> @@ -1206,7 +1206,7 @@ static int init_render_ring(struct intel_engine_cs *engine)
>  		return ret;
>  
>  	/* WaTimedSingleVertexDispatch:cl,bw,ctg,elk,ilk,snb */
> -	if (INTEL_GEN(dev_priv) >= 4 && INTEL_GEN(dev_priv) < 7)
> +	if (IS_GEN(dev_priv, 4, 6))
>  		I915_WRITE(MI_MODE, _MASKED_BIT_ENABLE(VS_TIMER_DISPATCH));
>  
>  	/* We need to disable the AsyncFlip performance optimisations in order
> @@ -1215,7 +1215,7 @@ static int init_render_ring(struct intel_engine_cs *engine)
>  	 *
>  	 * WaDisableAsyncFlipPerfMode:snb,ivb,hsw,vlv
>  	 */
> -	if (INTEL_GEN(dev_priv) >= 6 && INTEL_GEN(dev_priv) < 8)
> +	if (IS_GEN(dev_priv, 6, 7))
>  		I915_WRITE(MI_MODE, _MASKED_BIT_ENABLE(ASYNC_FLIP_PERF_DISABLE));
>  
>  	/* Required for the hardware to program scanline values for waiting */
> @@ -1240,7 +1240,7 @@ static int init_render_ring(struct intel_engine_cs *engine)
>  			   _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB));
>  	}
>  
> -	if (INTEL_GEN(dev_priv) >= 6 && INTEL_GEN(dev_priv) < 8)
> +	if (IS_GEN(dev_priv, 6, 7))
>  		I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_FORCE_ORDERING));
>  
>  	if (HAS_L3_DPF(dev_priv))
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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