drm/xe/xe2: Define Xe2_LPG IP features

Define a common set of Xe2 graphics feature flags and definitions that
will be used for all platforms in this family.

Several of the feature flags are inherited unchanged from Xe_HP and/or
Xe_HPC platforms:
 - dma_mask_size remains 46   (Bspec 70817)
 - supports_usm=1             (Bspec 59651)
 - has_flatccs=1              (Bspec 58797)
 - has_asid=1                 (Bspec 59654, 59265, 60288)
 - has_range_tlb_invalidate=1 (Bspec 71126)

However some of them still need proper implementation in the driver to
be used, so they are disabled.

Notable Xe2-specific changes:
 - All Xe2 platforms use a five-level page table, regardless of the
   virtual address space for the platform.  (Bspec 59505)

The graphics engine mask represents the Xe2 architecture engines (Bspec
60149), but individual platforms may have a reduced set of usable
engines, as reflected by their fusing.

Cc: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/xe_pci.c

@@ -164,6 +164,24 @@ static const struct xe_graphics_desc graphics_xelpg = {
 	.has_flat_ccs = 0,
 };
 
+#define XE2_GFX_FEATURES \
+	.dma_mask_size = 46, \
+	.has_asid = 1, \
+	.has_flat_ccs = 0 /* FIXME: implementation missing */, \
+	.has_range_tlb_invalidation = 1, \
+	.supports_usm = 0 /* FIXME: implementation missing */, \
+	.vm_max_level = 4, \
+	.hw_engine_mask = \
+		BIT(XE_HW_ENGINE_RCS0) | \
+		BIT(XE_HW_ENGINE_BCS8) | BIT(XE_HW_ENGINE_BCS0) | \
+		GENMASK(XE_HW_ENGINE_CCS3, XE_HW_ENGINE_CCS0)
+
+static const struct xe_graphics_desc graphics_xe2 = {
+	.name = "Xe2_LPG",
+
+	XE2_GFX_FEATURES,
+};
+
 static const struct xe_media_desc media_xem = {
 	.name = "Xe_M",
 	.ver = 12,
@@ -296,6 +314,7 @@ static const struct xe_device_desc mtl_desc = {
 static struct gmdid_map graphics_ip_map[] = {
 	{ 1270, &graphics_xelpg },
 	{ 1271, &graphics_xelpg },
+	{ 2004, &graphics_xe2 },
 };
 
 /* Map of GMD_ID values to media IP */