[igt-dev] [PATCH 3/5] i915/gem_mocs_settings: add MOCS table for Tiger Lake

[Lucas De Marchi]

Some small changes compared to Ice Lake, namely:

  - Removed entries 0 and 1: they are now reserved and shouldn't be used
  - Entries 16, 17, 48..61 were previously unused and are now available

Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 tests/i915/gem_mocs_settings.c | 38 ++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/tests/i915/gem_mocs_settings.c b/tests/i915/gem_mocs_settings.c
index 9f4e1b6d..e3da8515 100644
--- a/tests/i915/gem_mocs_settings.c
+++ b/tests/i915/gem_mocs_settings.c
@@ -78,6 +78,40 @@ struct mocs_table {
 };
 
 /* The first entries in the MOCS tables are defined by uABI */
+
+static const struct mocs_entry tigerlake_mocs_table[GEN11_NUM_MOCS_ENTRIES] = {
+	[2]  = { 0x00000037, 0x0030, 0x1},
+	[3]  = { 0x00000005, 0x0010, 0x1},
+	[4]  = { 0x00000005, 0x0030, 0x1},
+	[5]  = { 0x00000037, 0x0010, 0x1},
+	[6]  = { 0x00000017, 0x0010, 0x1},
+	[7]  = { 0x00000017, 0x0030, 0x1},
+	[8]  = { 0x00000027, 0x0010, 0x1},
+	[9]  = { 0x00000027, 0x0030, 0x1},
+	[10] = { 0x00000077, 0x0010, 0x1},
+	[11] = { 0x00000077, 0x0030, 0x1},
+	[12] = { 0x00000057, 0x0010, 0x1},
+	[13] = { 0x00000057, 0x0030, 0x1},
+	[14] = { 0x00000067, 0x0010, 0x1},
+	[15] = { 0x00000067, 0x0030, 0x1},
+	[16] = { 0x00004005, 0x0010, 0x1},
+	[17] = { 0x00004005, 0x0030, 0x1},
+	[18] = { 0x00060037, 0x0030, 0x1},
+	[19] = { 0x00000737, 0x0030, 0x1},
+	[20] = { 0x00000337, 0x0030, 0x1},
+	[21] = { 0x00000137, 0x0030, 0x1},
+	[22] = { 0x000003b7, 0x0030, 0x1},
+	[23] = { 0x000007b7, 0x0030, 0x1},
+	[48] = { 0x00000037, 0x0030, 0x1},
+	[49] = { 0x00000005, 0x0030, 0x1},
+	[50] = { 0x00000037, 0x0010, 0x1},
+	[51] = { 0x00000005, 0x0010, 0x1},
+	[60] = { 0x00000037, 0x0010, 0x1},
+	[61] = { 0x00004005, 0x0030, 0x1},
+	[62] = { 0x00000037, 0x0010, 0x1},
+	[63] = { 0x00000037, 0x0010, 0x1},
+};
+
 static const struct mocs_entry icelake_mocs_table[GEN11_NUM_MOCS_ENTRIES] = {
 	[0]  = { 0x00000005, 0x0010, 0x1},
 	[1]  = ICELAKE_MOCS_PTE,
@@ -158,6 +192,10 @@ static bool get_mocs_settings(int fd, struct mocs_table *table, bool dirty)
 		table->size  = ARRAY_SIZE(icelake_mocs_table);
 		table->table = icelake_mocs_table;
 		result = true;
+	} else if (IS_GEN(devid, 12)) {
+		table->size  = ARRAY_SIZE(tigerlake_mocs_table);
+		table->table = tigerlake_mocs_table;
+		result = true;
 	}
 
 	return result;
-- 
2.21.0