Starting on MTL, the GSC is no longer managed with direct MMIO access,
but we instead have a dedicated command streamer for it. As a first step
for adding support for this CS, add the required definitions.
Note that, although it is now a CS, the GSC retains its old
class:instance value (OTHER_CLASS instance 6)
Bspec: 65308, 45605
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 8 ++++++++
drivers/gpu/drm/i915/gt/intel_engine_types.h | 1 +
drivers/gpu/drm/i915/gt/intel_engine_user.c | 1 +
drivers/gpu/drm/i915/i915_reg.h | 1 +
4 files changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index 3b7d750ad054..e0fbfac03979 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -244,6 +244,13 @@ static const struct engine_info intel_engines[] = {
{ .graphics_ver = 12, .base = GEN12_COMPUTE3_RING_BASE }
}
},
+ [GSC0] = {
+ .class = OTHER_CLASS,
+ .instance = OTHER_GSC_INSTANCE,
+ .mmio_bases = {
+ { .graphics_ver = 12, .base = MTL_GSC_RING_BASE }
+ }
+ },
};
/**
@@ -324,6 +331,7 @@ u32 intel_engine_context_size(struct intel_gt *gt, u8 class)
case VIDEO_DECODE_CLASS:
case VIDEO_ENHANCEMENT_CLASS:
case COPY_ENGINE_CLASS:
+ case OTHER_CLASS:
if (GRAPHICS_VER(gt->i915) < 8)
return 0;
return GEN8_LR_CONTEXT_OTHER_SIZE;
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index 6b5d4ea22b67..4fd54fb8810f 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -136,6 +136,7 @@ enum intel_engine_id {
CCS2,
CCS3,
#define _CCS(n) (CCS0 + (n))
+ GSC0,
I915_NUM_ENGINES
#define INVALID_ENGINE ((enum intel_engine_id)-1)
};
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_user.c b/drivers/gpu/drm/i915/gt/intel_engine_user.c
index 46a174f8aa00..79312b734690 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_user.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_user.c
@@ -140,6 +140,7 @@ const char *intel_engine_class_repr(u8 class)
[COPY_ENGINE_CLASS] = "bcs",
[VIDEO_DECODE_CLASS] = "vcs",
[VIDEO_ENHANCEMENT_CLASS] = "vecs",
+ [OTHER_CLASS] = "other",
[COMPUTE_CLASS] = "ccs",
};
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 1c0da50c0dc7..d056c3117ef2 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -970,6 +970,7 @@
#define GEN11_VEBOX2_RING_BASE 0x1d8000
#define XEHP_VEBOX3_RING_BASE 0x1e8000
#define XEHP_VEBOX4_RING_BASE 0x1f8000
+#define MTL_GSC_RING_BASE 0x11a000
#define GEN12_COMPUTE0_RING_BASE 0x1a000
#define GEN12_COMPUTE1_RING_BASE 0x1c000
#define GEN12_COMPUTE2_RING_BASE 0x1e000
--
2.37.3
