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919f1f55d9
GuC submission is basically execlist submission, but with the GuC
handling the actual writes to the ELSP and the resulting context
switch interrupts. So to describe a context for submission via
the GuC, we need one of the same functions used in execlist mode.
This commit exposes one such function, changing its name to better
describe what it does (it's related to logical ring contexts rather
than to execlists per se).
v2:
Replaces previous "drm/i915: Move execlists defines from .c to .h"
v3:
Incorporates a change to one of the functions exposed here that was
previously part of an internal patch, but which was omitted from
the version recently committed to drm-intel-nightly:
7a01a0a drm/i915/lrc: Update PDPx registers with lri commands
So we reinstate this change here.
v4:
Drop v3 change, update function parameters due to collision with
8ee3615 drm/i915: Convert execlists_ctx_descriptor() for requests
v5:
Don't expose execlists_update_context() after all. The current
version is no longer compatible with GuC submission; trying to
share the execlist version of this function results in both GuC
and CPU updating TAIL in the context image, with bad results when
they get out of step. The GuC submission path now has its own
private version that just updates the ringbuffer start address,
and not TAIL or PDPx.
v6:
Rebased
Issue: VIZ-4884
Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Tom O'Rourke <Tom.O'Rourke@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
92 lines
3.7 KiB
C
92 lines
3.7 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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#define GEN8_LR_CONTEXT_ALIGN 4096
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/* Execlists regs */
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#define RING_ELSP(ring) ((ring)->mmio_base+0x230)
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#define RING_EXECLIST_STATUS(ring) ((ring)->mmio_base+0x234)
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#define RING_CONTEXT_CONTROL(ring) ((ring)->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 RING_CONTEXT_STATUS_BUF(ring) ((ring)->mmio_base+0x370)
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#define RING_CONTEXT_STATUS_PTR(ring) ((ring)->mmio_base+0x3a0)
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/* Logical Rings */
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int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request);
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int intel_logical_ring_reserve_space(struct drm_i915_gem_request *request);
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void intel_logical_ring_stop(struct intel_engine_cs *ring);
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void intel_logical_ring_cleanup(struct intel_engine_cs *ring);
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int intel_logical_rings_init(struct drm_device *dev);
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int intel_logical_ring_begin(struct drm_i915_gem_request *req, int num_dwords);
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int logical_ring_flush_all_caches(struct drm_i915_gem_request *req);
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/**
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* intel_logical_ring_advance() - advance the ringbuffer tail
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* @ringbuf: Ringbuffer to advance.
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*
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* The tail is only updated in our logical ringbuffer struct.
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*/
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static inline void intel_logical_ring_advance(struct intel_ringbuffer *ringbuf)
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{
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ringbuf->tail &= ringbuf->size - 1;
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}
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/**
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* intel_logical_ring_emit() - write a DWORD to the ringbuffer.
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* @ringbuf: Ringbuffer to write to.
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* @data: DWORD to write.
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*/
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static inline void intel_logical_ring_emit(struct intel_ringbuffer *ringbuf,
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u32 data)
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{
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iowrite32(data, ringbuf->virtual_start + ringbuf->tail);
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ringbuf->tail += 4;
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}
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/* Logical Ring Contexts */
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void intel_lr_context_free(struct intel_context *ctx);
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int intel_lr_context_deferred_create(struct intel_context *ctx,
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struct intel_engine_cs *ring);
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void intel_lr_context_unpin(struct drm_i915_gem_request *req);
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void intel_lr_context_reset(struct drm_device *dev,
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struct intel_context *ctx);
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uint64_t intel_lr_context_descriptor(struct intel_context *ctx,
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struct intel_engine_cs *ring);
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/* Execlists */
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int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists);
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struct i915_execbuffer_params;
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int intel_execlists_submission(struct i915_execbuffer_params *params,
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struct drm_i915_gem_execbuffer2 *args,
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struct list_head *vmas);
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u32 intel_execlists_ctx_id(struct drm_i915_gem_object *ctx_obj);
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void intel_lrc_irq_handler(struct intel_engine_cs *ring);
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void intel_execlists_retire_requests(struct intel_engine_cs *ring);
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#endif /* _INTEL_LRC_H_ */
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