9a437ccb84
Inject a fault into lrc_init_wa_ctx() to ensure that we can tolerate a failure to construct the workarounds. v2: Avoid mentioning an error for fault-injection, other CI will complain about the dmesg spam. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210109114453.27798-1-chris@chris-wilson.co.uk
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2014 Intel Corporation
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*/
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#ifndef __INTEL_LRC_H__
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#define __INTEL_LRC_H__
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#include <linux/types.h>
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#include "intel_context.h"
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#include "intel_lrc_reg.h"
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struct drm_i915_gem_object;
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struct intel_engine_cs;
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struct intel_ring;
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/* At the start of the context image is its per-process HWS page */
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#define LRC_PPHWSP_PN (0)
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#define LRC_PPHWSP_SZ (1)
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/* After the PPHWSP we have the logical state for the context */
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#define LRC_STATE_PN (LRC_PPHWSP_PN + LRC_PPHWSP_SZ)
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#define LRC_STATE_OFFSET (LRC_STATE_PN * PAGE_SIZE)
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/* Space within PPHWSP reserved to be used as scratch */
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#define LRC_PPHWSP_SCRATCH 0x34
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#define LRC_PPHWSP_SCRATCH_ADDR (LRC_PPHWSP_SCRATCH * sizeof(u32))
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void lrc_init_wa_ctx(struct intel_engine_cs *engine);
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void lrc_fini_wa_ctx(struct intel_engine_cs *engine);
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int lrc_alloc(struct intel_context *ce,
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struct intel_engine_cs *engine);
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void lrc_reset(struct intel_context *ce);
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void lrc_fini(struct intel_context *ce);
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void lrc_destroy(struct kref *kref);
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int
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lrc_pre_pin(struct intel_context *ce,
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struct intel_engine_cs *engine,
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struct i915_gem_ww_ctx *ww,
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void **vaddr);
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int
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lrc_pin(struct intel_context *ce,
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struct intel_engine_cs *engine,
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void *vaddr);
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void lrc_unpin(struct intel_context *ce);
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void lrc_post_unpin(struct intel_context *ce);
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void lrc_init_state(struct intel_context *ce,
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struct intel_engine_cs *engine,
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void *state);
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void lrc_init_regs(const struct intel_context *ce,
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const struct intel_engine_cs *engine,
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bool clear);
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void lrc_reset_regs(const struct intel_context *ce,
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const struct intel_engine_cs *engine);
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u32 lrc_update_regs(const struct intel_context *ce,
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const struct intel_engine_cs *engine,
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u32 head);
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void lrc_update_offsets(struct intel_context *ce,
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struct intel_engine_cs *engine);
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void lrc_check_regs(const struct intel_context *ce,
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const struct intel_engine_cs *engine,
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const char *when);
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void lrc_update_runtime(struct intel_context *ce);
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static inline u32 lrc_get_runtime(const struct intel_context *ce)
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{
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/*
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* We can use either ppHWSP[16] which is recorded before the context
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* switch (and so excludes the cost of context switches) or use the
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* value from the context image itself, which is saved/restored earlier
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* and so includes the cost of the save.
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*/
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return READ_ONCE(ce->lrc_reg_state[CTX_TIMESTAMP]);
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}
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#endif /* __INTEL_LRC_H__ */
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