From: Lucas De Marchi <lucas.demarchi@intel.com>
Date: Sat, 4 Sep 2021 00:35:43 +0000 (-0700)
Subject: drm/i915/xehpsdv: Define MOCS table for XeHP SDV
X-Git-Tag: block-5.16-2021-11-13~77^2~8^2~70
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=50bc6486a8f12643624cd3c48cd67fe49873849a;p=linux-2.6-block.git

drm/i915/xehpsdv: Define MOCS table for XeHP SDV

Like DG1, XeHP SDV doesn't have LLC/eDRAM control values due to being a
dgfx card. XeHP SDV adds 2 more bits: L3_GLBGO to "push the Go point to
memory for L3 destined transaction" and L3_LKP to "enable Lookup for
uncacheable accesses".

Bspec: 45101
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210904003544.2422282-2-matthew.d.roper@intel.com
---

diff --git a/drivers/gpu/drm/i915/gt/intel_mocs.c b/drivers/gpu/drm/i915/gt/intel_mocs.c
index f47521b8e941..8c3fbf4f323b 100644
--- a/drivers/gpu/drm/i915/gt/intel_mocs.c
+++ b/drivers/gpu/drm/i915/gt/intel_mocs.c
@@ -42,6 +42,8 @@ struct drm_i915_mocs_table {
 #define L3_ESC(value)		((value) << 0)
 #define L3_SCC(value)		((value) << 1)
 #define _L3_CACHEABILITY(value)	((value) << 4)
+#define L3_GLBGO(value)		((value) << 6)
+#define L3_LKUP(value)		((value) << 7)
 
 /* Helper defines */
 #define GEN9_NUM_MOCS_ENTRIES	64  /* 63-64 are reserved, but configured. */
@@ -343,6 +345,31 @@ static const struct drm_i915_mocs_entry gen12_mocs_table[] = {
 		   L3_3_WB),
 };
 
+static const struct drm_i915_mocs_entry xehpsdv_mocs_table[] = {
+	/* wa_1608975824 */
+	MOCS_ENTRY(0, 0, L3_3_WB | L3_LKUP(1)),
+
+	/* UC - Coherent; GO:L3 */
+	MOCS_ENTRY(1, 0, L3_1_UC | L3_LKUP(1)),
+	/* UC - Coherent; GO:Memory */
+	MOCS_ENTRY(2, 0, L3_1_UC | L3_GLBGO(1) | L3_LKUP(1)),
+	/* UC - Non-Coherent; GO:Memory */
+	MOCS_ENTRY(3, 0, L3_1_UC | L3_GLBGO(1)),
+	/* UC - Non-Coherent; GO:L3 */
+	MOCS_ENTRY(4, 0, L3_1_UC),
+
+	/* WB */
+	MOCS_ENTRY(5, 0, L3_3_WB | L3_LKUP(1)),
+
+	/* HW Reserved - SW program but never use. */
+	MOCS_ENTRY(48, 0, L3_3_WB | L3_LKUP(1)),
+	MOCS_ENTRY(49, 0, L3_1_UC | L3_LKUP(1)),
+	MOCS_ENTRY(60, 0, L3_1_UC),
+	MOCS_ENTRY(61, 0, L3_1_UC),
+	MOCS_ENTRY(62, 0, L3_1_UC),
+	MOCS_ENTRY(63, 0, L3_1_UC),
+};
+
 enum {
 	HAS_GLOBAL_MOCS = BIT(0),
 	HAS_ENGINE_MOCS = BIT(1),
@@ -372,7 +399,13 @@ static unsigned int get_mocs_settings(const struct drm_i915_private *i915,
 	memset(table, 0, sizeof(struct drm_i915_mocs_table));
 
 	table->unused_entries_index = I915_MOCS_PTE;
-	if (IS_DG1(i915)) {
+	if (IS_XEHPSDV(i915)) {
+		table->size = ARRAY_SIZE(xehpsdv_mocs_table);
+		table->table = xehpsdv_mocs_table;
+		table->uc_index = 2;
+		table->n_entries = GEN9_NUM_MOCS_ENTRIES;
+		table->unused_entries_index = 5;
+	} else if (IS_DG1(i915)) {
 		table->size = ARRAY_SIZE(dg1_mocs_table);
 		table->table = dg1_mocs_table;
 		table->uc_index = 1;