drm/i915/dg1: add initial DG-1 definitions

Bspec: 33617, 33617

v2: s/intel_dg1_info/dg1_info/ as done for other platforms before and
    try to shut up compiler about ununsed variable that we know
    shouldn't be used (Lucas)
v3: replace explicit attribute with __maybe_unused (Lucas)

Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Stuart Summers <stuart.summers@intel.com>
Cc: Vanshidhar Konda <vanshidhar.r.konda@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Aravind Iddamsetty <aravind.iddamsetty@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200713182321.12390-2-lucas.demarchi@intel.com

Author: Abdiel Janulgue

drivers/gpu/drm/i915/i915_drv.h

@@ -1431,6 +1431,7 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 #define IS_ELKHARTLAKE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE)
 #define IS_TIGERLAKE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_TIGERLAKE)
 #define IS_ROCKETLAKE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_ROCKETLAKE)
+#define IS_DG1(dev_priv)        IS_PLATFORM(dev_priv, INTEL_DG1)
 #define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
 				    (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
 #define IS_BDW_ULT(dev_priv) \
@@ -1559,6 +1560,12 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 #define IS_RKL_REVID(p, since, until) \
 	(IS_ROCKETLAKE(p) && IS_REVID(p, since, until))
 
+#define DG1_REVID_A0		0x0
+#define DG1_REVID_B0		0x1
+
+#define IS_DG1_REVID(p, since, until) \
+	(IS_DG1(p) && IS_REVID(p, since, until))
+
 #define IS_LP(dev_priv)	(INTEL_INFO(dev_priv)->is_lp)
 #define IS_GEN9_LP(dev_priv)	(IS_GEN(dev_priv, 9) && IS_LP(dev_priv))
 #define IS_GEN9_BC(dev_priv)	(IS_GEN(dev_priv, 9) && !IS_LP(dev_priv))

drivers/gpu/drm/i915/i915_pci.c

@@ -897,8 +897,20 @@ static const struct intel_device_info rkl_info = {
 
 #define GEN12_DGFX_FEATURES \
 	GEN12_FEATURES, \
+	.memory_regions = REGION_SMEM | REGION_LMEM, \
+	.has_master_unit_irq = 1, \
 	.is_dgfx = 1
 
+static const struct intel_device_info dg1_info __maybe_unused = {
+	GEN12_DGFX_FEATURES,
+	PLATFORM(INTEL_DG1),
+	.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+	.require_force_probe = 1,
+	.platform_engine_mask =
+		BIT(RCS0) | BIT(BCS0) | BIT(VECS0) |
+		BIT(VCS0) | BIT(VCS2),
+};
+
 #undef GEN
 #undef PLATFORM
 

drivers/gpu/drm/i915/intel_device_info.c

@@ -64,6 +64,7 @@ static const char * const platform_names[] = {
 	PLATFORM_NAME(ELKHARTLAKE),
 	PLATFORM_NAME(TIGERLAKE),
 	PLATFORM_NAME(ROCKETLAKE),
+	PLATFORM_NAME(DG1),
 };
 #undef PLATFORM_NAME
 

drivers/gpu/drm/i915/intel_device_info.h

@@ -82,6 +82,7 @@ enum intel_platform {
 	/* gen12 */
 	INTEL_TIGERLAKE,
 	INTEL_ROCKETLAKE,
+	INTEL_DG1,
 	INTEL_MAX_PLATFORMS
 };