1 files changed, 143 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.h b/drivers/gpu/drm/i915/gt/intel_lrc.h
new file mode 100644
index 000000000..a390f0813
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.h
@@ -0,0 +1,143 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2014 Intel Corporation
+ */
+
+#ifndef __INTEL_LRC_H__
+#define __INTEL_LRC_H__
+
+#include "i915_priolist_types.h"
+
+#include <linux/bitfield.h>
+#include <linux/types.h>
+
+#include "intel_context.h"
+
+struct drm_i915_gem_object;
+struct i915_gem_ww_ctx;
+struct intel_engine_cs;
+struct intel_ring;
+struct kref;
+
+/* At the start of the context image is its per-process HWS page */
+#define LRC_PPHWSP_PN	(0)
+#define LRC_PPHWSP_SZ	(1)
+/* After the PPHWSP we have the logical state for the context */
+#define LRC_STATE_PN	(LRC_PPHWSP_PN + LRC_PPHWSP_SZ)
+#define LRC_STATE_OFFSET (LRC_STATE_PN * PAGE_SIZE)
+
+/* Space within PPHWSP reserved to be used as scratch */
+#define LRC_PPHWSP_SCRATCH		0x34
+#define LRC_PPHWSP_SCRATCH_ADDR		(LRC_PPHWSP_SCRATCH * sizeof(u32))
+
+void lrc_init_wa_ctx(struct intel_engine_cs *engine);
+void lrc_fini_wa_ctx(struct intel_engine_cs *engine);
+
+int lrc_alloc(struct intel_context *ce,
+	      struct intel_engine_cs *engine);
+void lrc_reset(struct intel_context *ce);
+void lrc_fini(struct intel_context *ce);
+void lrc_destroy(struct kref *kref);
+
+int
+lrc_pre_pin(struct intel_context *ce,
+	    struct intel_engine_cs *engine,
+	    struct i915_gem_ww_ctx *ww,
+	    void **vaddr);
+int
+lrc_pin(struct intel_context *ce,
+	struct intel_engine_cs *engine,
+	void *vaddr);
+void lrc_unpin(struct intel_context *ce);
+void lrc_post_unpin(struct intel_context *ce);
+
+void lrc_init_state(struct intel_context *ce,
+		    struct intel_engine_cs *engine,
+		    void *state);
+
+void lrc_init_regs(const struct intel_context *ce,
+		   const struct intel_engine_cs *engine,
+		   bool clear);
+void lrc_reset_regs(const struct intel_context *ce,
+		    const struct intel_engine_cs *engine);
+
+u32 lrc_update_regs(const struct intel_context *ce,
+		    const struct intel_engine_cs *engine,
+		    u32 head);
+void lrc_update_offsets(struct intel_context *ce,
+			struct intel_engine_cs *engine);
+
+void lrc_check_regs(const struct intel_context *ce,
+		    const struct intel_engine_cs *engine,
+		    const char *when);
+
+void lrc_update_runtime(struct intel_context *ce);
+
+enum {
+	INTEL_ADVANCED_CONTEXT = 0,
+	INTEL_LEGACY_32B_CONTEXT,
+	INTEL_ADVANCED_AD_CONTEXT,
+	INTEL_LEGACY_64B_CONTEXT
+};
+
+enum {
+	FAULT_AND_HANG = 0,
+	FAULT_AND_HALT, /* Debug only */
+	FAULT_AND_STREAM,
+	FAULT_AND_CONTINUE /* Unsupported */
+};
+
+#define CTX_GTT_ADDRESS_MASK			GENMASK(31, 12)
+#define GEN8_CTX_VALID				(1 << 0)
+#define GEN8_CTX_FORCE_PD_RESTORE		(1 << 1)
+#define GEN8_CTX_FORCE_RESTORE			(1 << 2)
+#define GEN8_CTX_L3LLC_COHERENT			(1 << 5)
+#define GEN8_CTX_PRIVILEGE			(1 << 8)
+#define GEN8_CTX_ADDRESSING_MODE_SHIFT		3
+#define GEN12_CTX_PRIORITY_MASK			GENMASK(10, 9)
+#define GEN12_CTX_PRIORITY_HIGH			FIELD_PREP(GEN12_CTX_PRIORITY_MASK, 2)
+#define GEN12_CTX_PRIORITY_NORMAL		FIELD_PREP(GEN12_CTX_PRIORITY_MASK, 1)
+#define GEN12_CTX_PRIORITY_LOW			FIELD_PREP(GEN12_CTX_PRIORITY_MASK, 0)
+#define GEN8_CTX_ID_SHIFT			32
+#define GEN8_CTX_ID_WIDTH			21
+#define GEN11_SW_CTX_ID_SHIFT			37
+#define GEN11_SW_CTX_ID_WIDTH			11
+#define GEN11_ENGINE_CLASS_SHIFT		61
+#define GEN11_ENGINE_CLASS_WIDTH		3
+#define GEN11_ENGINE_INSTANCE_SHIFT		48
+#define GEN11_ENGINE_INSTANCE_WIDTH		6
+#define XEHP_SW_CTX_ID_SHIFT			39
+#define XEHP_SW_CTX_ID_WIDTH			16
+#define XEHP_SW_COUNTER_SHIFT			58
+#define XEHP_SW_COUNTER_WIDTH			6
+
+static inline void lrc_runtime_start(struct intel_context *ce)
+{
+	struct intel_context_stats *stats = &ce->stats;
+
+	if (intel_context_is_barrier(ce))
+		return;
+
+	if (stats->active)
+		return;
+
+	WRITE_ONCE(stats->active, intel_context_clock());
+}
+
+static inline void lrc_runtime_stop(struct intel_context *ce)
+{
+	struct intel_context_stats *stats = &ce->stats;
+
+	if (!stats->active)
+		return;
+
+	lrc_update_runtime(ce);
+	WRITE_ONCE(stats->active, 0);
+}
+
+#define DG2_PREDICATE_RESULT_WA (PAGE_SIZE - sizeof(u64))
+#define DG2_PREDICATE_RESULT_BB (2048)
+
+u32 lrc_indirect_bb(const struct intel_context *ce);
+
+#endif /* __INTEL_LRC_H__ */