131 lines
4.9 KiB
C
131 lines
4.9 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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#define GEN8_LR_CONTEXT_ALIGN 4096
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/* Execlists regs */
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#define RING_ELSP(ring) _MMIO((ring)->mmio_base + 0x230)
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#define RING_EXECLIST_STATUS_LO(ring) _MMIO((ring)->mmio_base + 0x234)
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#define RING_EXECLIST_STATUS_HI(ring) _MMIO((ring)->mmio_base + 0x234 + 4)
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#define RING_CONTEXT_CONTROL(ring) _MMIO((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_BASE(ring) _MMIO((ring)->mmio_base + 0x370)
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#define RING_CONTEXT_STATUS_BUF_LO(ring, i) _MMIO((ring)->mmio_base + 0x370 + (i) * 8)
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#define RING_CONTEXT_STATUS_BUF_HI(ring, i) _MMIO((ring)->mmio_base + 0x370 + (i) * 8 + 4)
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#define RING_CONTEXT_STATUS_PTR(ring) _MMIO((ring)->mmio_base + 0x3a0)
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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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};
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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 *engine);
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void intel_logical_ring_cleanup(struct intel_engine_cs *engine);
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int intel_logical_rings_init(struct drm_device *dev);
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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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static inline void intel_logical_ring_emit_reg(struct intel_ringbuffer *ringbuf,
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i915_reg_t reg)
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{
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intel_logical_ring_emit(ringbuf, i915_mmio_reg_offset(reg));
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}
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/* Logical Ring Contexts */
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/* One extra page is added before LRC for GuC as shared data */
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#define LRC_GUCSHR_PN (0)
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#define LRC_PPHWSP_PN (LRC_GUCSHR_PN + 1)
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#define LRC_STATE_PN (LRC_PPHWSP_PN + 1)
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struct i915_gem_context;
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uint32_t intel_lr_context_size(struct intel_engine_cs *engine);
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void intel_lr_context_unpin(struct i915_gem_context *ctx,
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struct intel_engine_cs *engine);
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struct drm_i915_private;
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void intel_lr_context_reset(struct drm_i915_private *dev_priv,
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struct i915_gem_context *ctx);
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uint64_t intel_lr_context_descriptor(struct i915_gem_context *ctx,
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struct intel_engine_cs *engine);
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/* Execlists */
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int intel_sanitize_enable_execlists(struct drm_i915_private *dev_priv,
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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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void intel_execlists_cancel_requests(struct intel_engine_cs *engine);
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#endif /* _INTEL_LRC_H_ */
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