[Intel-gfx] [PATCH] drm/i915/cfl: Introduce Coffee Lake platform definition.

[Rodrigo Vivi]

Coffee Lake is a Intel® Processor containing Intel® HD Graphics
following Kabylake.

It is Gen9 graphics based platform on top of CNP PCH.

Let's start by adding the platform definition based on previous
platforms but yet as preliminary_hw_support.

On following patches we will start adding PCI IDs and the
platform specific changes.

v2: Also add BS2 ring that is present on GT3. As on KBL, according
    spec: "GT3 also has additional media blocks with second instance
    of VEBox and VDBox each", i.e. BSD2 ring in our case. Noticed
    when reviewing PCI ID patches.

Cc: Anusha Srivatsa <anusha.srivatsa at intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h          |  2 ++
 drivers/gpu/drm/i915/i915_pci.c          | 16 ++++++++++++++++
 drivers/gpu/drm/i915/intel_device_info.c |  1 +
 3 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index c31c0cf..2f20e87 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -826,6 +826,7 @@ enum intel_platform {
 	INTEL_BROXTON,
 	INTEL_KABYLAKE,
 	INTEL_GEMINILAKE,
+	INTEL_COFFEELAKE,
 	INTEL_MAX_PLATFORMS
 };
 
@@ -2768,6 +2769,7 @@ static inline struct scatterlist *__sg_next(struct scatterlist *sg)
 #define IS_BROXTON(dev_priv)	((dev_priv)->info.platform == INTEL_BROXTON)
 #define IS_KABYLAKE(dev_priv)	((dev_priv)->info.platform == INTEL_KABYLAKE)
 #define IS_GEMINILAKE(dev_priv)	((dev_priv)->info.platform == INTEL_GEMINILAKE)
+#define IS_COFFEELAKE(dev_priv)	((dev_priv)->info.platform == INTEL_COFFEELAKE)
 #define IS_MOBILE(dev_priv)	((dev_priv)->info.is_mobile)
 #define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
 				    (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index cf43dc1..a32bc7b 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -425,6 +425,22 @@
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
 };
 
+#define CFL_FEATURES \
+	.is_alpha_support = 1, \
+	BDW_FEATURES, \
+	.platform = INTEL_COFFEELAKE, \
+	.gen = 9, \
+	.ddb_size = 896
+
+static const struct intel_device_info intel_coffeelake_info = {
+	CFL_FEATURES,
+};
+
+static const struct intel_device_info intel_coffeelake_gt3_info = {
+	CFL_FEATURES,
+	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
+};
+
 /*
  * Make sure any device matches here are from most specific to most
  * general.  For example, since the Quanta match is based on the subsystem
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 3718341..acc746f 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -51,6 +51,7 @@
 	PLATFORM_NAME(BROXTON),
 	PLATFORM_NAME(KABYLAKE),
 	PLATFORM_NAME(GEMINILAKE),
+	PLATFORM_NAME(COFFEELAKE),
 };
 #undef PLATFORM_NAME
 
-- 
1.9.1