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[v4,4/5] drm/i915/guc: Add WOPCM partitioning support for CNL

Message ID 1513119394-28951-4-git-send-email-yaodong.li@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jackie Li Dec. 12, 2017, 10:56 p.m. UTC 
CNL has different WOPCM size and hardware restriction on GuC
WOPCM size.

This patch returns the correct WOPCM reserved size on CNL and
adds the GuC WOPCM size check for CNL.

Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Cc: John Spotswood <john.a.spotswood@intel.com>
Cc: Jeff McGee <jeff.mcgee@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Jackie Li <yaodong.li@intel.com>
---
 drivers/gpu/drm/i915/intel_guc_wopcm.c | 21 +++++++++++++++++++++
 drivers/gpu/drm/i915/intel_guc_wopcm.h |  3 +++
 2 files changed, 24 insertions(+)
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/intel_guc_wopcm.c b/drivers/gpu/drm/i915/intel_guc_wopcm.c
index 60a6afe..e23d7a4 100644
--- a/drivers/gpu/drm/i915/intel_guc_wopcm.c
+++ b/drivers/gpu/drm/i915/intel_guc_wopcm.c
@@ -33,6 +33,9 @@  static inline u32 guc_reserved_wopcm_size(struct intel_guc *guc)
 	if (IS_GEN9_LP(i915))
 		return BXT_WOPCM_RC6_RESERVED;
 
+	if (IS_GEN10(i915))
+		return CNL_WOPCM_RESERVED;
+
 	return 0;
 }
 
@@ -58,6 +61,21 @@  static inline int gen9_wocpm_size_check(struct drm_i915_private *i915)
 	return 0;
 }
 
+static inline int cnl_a0_wopcm_size_check(struct drm_i915_private *i915)
+{
+	struct intel_guc_wopcm *wopcm = &i915->guc.wopcm;
+	u32 huc_size = intel_uc_fw_get_size(&i915->huc.fw);
+
+	/*
+	 * On CNL A0, hardware requires guc size to be larger than or equal to
+	 * HuC kernel size.
+	 */
+	if (unlikely(wopcm->size - GEN10_GUC_WOPCM_OFFSET < huc_size))
+		return -E2BIG;
+
+	return 0;
+}
+
 static inline int guc_wopcm_size_check(struct intel_guc *guc)
 {
 	struct drm_i915_private *i915 = guc_to_i915(guc);
@@ -65,6 +83,9 @@  static inline int guc_wopcm_size_check(struct intel_guc *guc)
 	if (IS_GEN9(i915))
 		return gen9_wocpm_size_check(i915);
 
+	if (IS_CNL_REVID(i915, CNL_REVID_A0, CNL_REVID_A0))
+		return cnl_a0_wopcm_size_check(i915);
+
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/i915/intel_guc_wopcm.h b/drivers/gpu/drm/i915/intel_guc_wopcm.h
index 2f9d03a..5bb5092 100644
--- a/drivers/gpu/drm/i915/intel_guc_wopcm.h
+++ b/drivers/gpu/drm/i915/intel_guc_wopcm.h
@@ -39,9 +39,12 @@  struct intel_guc;
 #define GUC_WOPCM_STACK_RESERVED	(0x2000)
 /* 24KB WOPCM reserved for RC6 CTX on BXT */
 #define BXT_WOPCM_RC6_RESERVED		(0x6000)
+/* 36KB WOPCM reserved on CNL */
+#define CNL_WOPCM_RESERVED		(0x9000)
 
 #define GEN9_GUC_WOPCM_DELTA		4
 #define GEN9_GUC_WOPCM_OFFSET		(0x24000)
+#define GEN10_GUC_WOPCM_OFFSET		(0x4000)
 
 struct intel_guc_wopcm {
 	u32 offset;