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/* 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>
struct drm_i915_gem_object;
struct i915_gem_ww_ctx;
struct intel_context;
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 u32 lrc_desc_priority(int prio)
{
if (prio > I915_PRIORITY_NORMAL)
return GEN12_CTX_PRIORITY_HIGH;
else if (prio < I915_PRIORITY_NORMAL)
return GEN12_CTX_PRIORITY_LOW;
else
return GEN12_CTX_PRIORITY_NORMAL;
}
#endif /* __INTEL_LRC_H__ */
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