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209b7955e5
We make a decision at module load whether to use the GuC backend or not,
but lose that setup across set-wedge. Currently, the guc doesn't
override the engine->set_default_submission hook letting execlists sneak
back in temporarily on unwedging leading to an unbalanced park/unpark.
v2: Remove comment about switching back temporarily to execlists on
guc_submission_disable(). We currently only call disable on shutdown,
and plan to also call disable before suspend and reset, in which case we
will either restore guc submission or mark the driver as wedged, making
the reset back to execlists pointless.
v3: Move reset.prepare across
Fixes: 63572937ce ("drm/i915/execlists: Flush pending preemption events during reset")
Testcase: igt/drv_module_reload/basic-reload-inject
Testcase: igt/gem_eio
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180717202932.1423-1-chris@chris-wilson.co.uk
110 lines
4.3 KiB
C
110 lines
4.3 KiB
C
/*
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* Copyright © 2014 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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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 "intel_ringbuffer.h"
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#include "i915_gem_context.h"
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#define GEN8_LR_CONTEXT_ALIGN I915_GTT_MIN_ALIGNMENT
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/* Execlists regs */
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#define RING_ELSP(engine) _MMIO((engine)->mmio_base + 0x230)
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#define RING_EXECLIST_STATUS_LO(engine) _MMIO((engine)->mmio_base + 0x234)
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#define RING_EXECLIST_STATUS_HI(engine) _MMIO((engine)->mmio_base + 0x234 + 4)
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#define RING_CONTEXT_CONTROL(engine) _MMIO((engine)->mmio_base + 0x244)
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#define CTX_CTRL_INHIBIT_SYN_CTX_SWITCH (1 << 3)
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#define CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT (1 << 0)
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#define CTX_CTRL_RS_CTX_ENABLE (1 << 1)
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#define CTX_CTRL_ENGINE_CTX_SAVE_INHIBIT (1 << 2)
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#define RING_CONTEXT_STATUS_BUF_BASE(engine) _MMIO((engine)->mmio_base + 0x370)
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#define RING_CONTEXT_STATUS_BUF_LO(engine, i) _MMIO((engine)->mmio_base + 0x370 + (i) * 8)
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#define RING_CONTEXT_STATUS_BUF_HI(engine, i) _MMIO((engine)->mmio_base + 0x370 + (i) * 8 + 4)
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#define RING_CONTEXT_STATUS_PTR(engine) _MMIO((engine)->mmio_base + 0x3a0)
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#define RING_EXECLIST_SQ_CONTENTS(engine) _MMIO((engine)->mmio_base + 0x510)
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#define RING_EXECLIST_CONTROL(engine) _MMIO((engine)->mmio_base + 0x550)
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#define EL_CTRL_LOAD (1 << 0)
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/* The docs specify that the write pointer wraps around after 5h, "After status
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* is written out to the last available status QW at offset 5h, this pointer
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* wraps to 0."
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*
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* Therefore, one must infer than even though there are 3 bits available, 6 and
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* 7 appear to be * reserved.
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*/
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#define GEN8_CSB_ENTRIES 6
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#define GEN8_CSB_PTR_MASK 0x7
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#define GEN8_CSB_READ_PTR_MASK (GEN8_CSB_PTR_MASK << 8)
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#define GEN8_CSB_WRITE_PTR_MASK (GEN8_CSB_PTR_MASK << 0)
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#define GEN8_CSB_WRITE_PTR(csb_status) \
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(((csb_status) & GEN8_CSB_WRITE_PTR_MASK) >> 0)
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#define GEN8_CSB_READ_PTR(csb_status) \
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(((csb_status) & GEN8_CSB_READ_PTR_MASK) >> 8)
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enum {
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INTEL_CONTEXT_SCHEDULE_IN = 0,
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INTEL_CONTEXT_SCHEDULE_OUT,
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INTEL_CONTEXT_SCHEDULE_PREEMPTED,
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};
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/* Logical Rings */
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void intel_logical_ring_cleanup(struct intel_engine_cs *engine);
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int logical_render_ring_init(struct intel_engine_cs *engine);
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int logical_xcs_ring_init(struct intel_engine_cs *engine);
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/* Logical Ring Contexts */
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/*
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* We allocate a header at the start of the context image for our own
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* use, therefore the actual location of the logical state is offset
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* from the start of the VMA. The layout is
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*
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* | [guc] | [hwsp] [logical state] |
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* |<- our header ->|<- context image ->|
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*
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*/
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/* The first page is used for sharing data with the GuC */
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#define LRC_GUCSHR_PN (0)
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#define LRC_GUCSHR_SZ (1)
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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 (LRC_GUCSHR_PN + LRC_GUCSHR_SZ)
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#define LRC_PPHWSP_SZ (1)
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/* Finally 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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/*
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* Currently we include the PPHWSP in __intel_engine_context_size() so
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* the size of the header is synonymous with the start of the PPHWSP.
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*/
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#define LRC_HEADER_PAGES LRC_PPHWSP_PN
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struct drm_i915_private;
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struct i915_gem_context;
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void intel_lr_context_resume(struct drm_i915_private *dev_priv);
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void intel_execlists_set_default_submission(struct intel_engine_cs *engine);
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#endif /* _INTEL_LRC_H_ */
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