406 lines
11 KiB
C
406 lines
11 KiB
C
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/*
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* Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
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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 FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors:
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* Eddie Dong <eddie.dong@intel.com>
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* Kevin Tian <kevin.tian@intel.com>
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*
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* Contributors:
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* Zhi Wang <zhi.a.wang@intel.com>
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* Changbin Du <changbin.du@intel.com>
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* Zhenyu Wang <zhenyuw@linux.intel.com>
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* Tina Zhang <tina.zhang@intel.com>
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* Bing Niu <bing.niu@intel.com>
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*
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*/
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#include "i915_drv.h"
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#include "gvt.h"
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#include "trace.h"
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struct render_mmio {
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int ring_id;
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i915_reg_t reg;
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u32 mask;
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bool in_context;
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u32 value;
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};
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static struct render_mmio gen8_render_mmio_list[] __cacheline_aligned = {
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{RCS, _MMIO(0x229c), 0xffff, false},
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{RCS, _MMIO(0x2248), 0x0, false},
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{RCS, _MMIO(0x2098), 0x0, false},
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{RCS, _MMIO(0x20c0), 0xffff, true},
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{RCS, _MMIO(0x24d0), 0, false},
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{RCS, _MMIO(0x24d4), 0, false},
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{RCS, _MMIO(0x24d8), 0, false},
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{RCS, _MMIO(0x24dc), 0, false},
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{RCS, _MMIO(0x24e0), 0, false},
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{RCS, _MMIO(0x24e4), 0, false},
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{RCS, _MMIO(0x24e8), 0, false},
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{RCS, _MMIO(0x24ec), 0, false},
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{RCS, _MMIO(0x24f0), 0, false},
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{RCS, _MMIO(0x24f4), 0, false},
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{RCS, _MMIO(0x24f8), 0, false},
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{RCS, _MMIO(0x24fc), 0, false},
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{RCS, _MMIO(0x7004), 0xffff, true},
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{RCS, _MMIO(0x7008), 0xffff, true},
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{RCS, _MMIO(0x7000), 0xffff, true},
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{RCS, _MMIO(0x7010), 0xffff, true},
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{RCS, _MMIO(0x7300), 0xffff, true},
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{RCS, _MMIO(0x83a4), 0xffff, true},
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{BCS, _MMIO(0x2229c), 0xffff, false},
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{BCS, _MMIO(0x2209c), 0xffff, false},
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{BCS, _MMIO(0x220c0), 0xffff, false},
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{BCS, _MMIO(0x22098), 0x0, false},
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{BCS, _MMIO(0x22028), 0x0, false},
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};
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static struct render_mmio gen9_render_mmio_list[] __cacheline_aligned = {
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{RCS, _MMIO(0x229c), 0xffff, false},
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{RCS, _MMIO(0x2248), 0x0, false},
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{RCS, _MMIO(0x2098), 0x0, false},
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{RCS, _MMIO(0x20c0), 0xffff, true},
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{RCS, _MMIO(0x24d0), 0, false},
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{RCS, _MMIO(0x24d4), 0, false},
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{RCS, _MMIO(0x24d8), 0, false},
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{RCS, _MMIO(0x24dc), 0, false},
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{RCS, _MMIO(0x24e0), 0, false},
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{RCS, _MMIO(0x24e4), 0, false},
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{RCS, _MMIO(0x24e8), 0, false},
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{RCS, _MMIO(0x24ec), 0, false},
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{RCS, _MMIO(0x24f0), 0, false},
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{RCS, _MMIO(0x24f4), 0, false},
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{RCS, _MMIO(0x24f8), 0, false},
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{RCS, _MMIO(0x24fc), 0, false},
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{RCS, _MMIO(0x7004), 0xffff, true},
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{RCS, _MMIO(0x7008), 0xffff, true},
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{RCS, _MMIO(0x7000), 0xffff, true},
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{RCS, _MMIO(0x7010), 0xffff, true},
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{RCS, _MMIO(0x7300), 0xffff, true},
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{RCS, _MMIO(0x83a4), 0xffff, true},
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{RCS, _MMIO(0x40e0), 0, false},
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{RCS, _MMIO(0x40e4), 0, false},
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{RCS, _MMIO(0x2580), 0xffff, true},
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{RCS, _MMIO(0x7014), 0xffff, true},
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{RCS, _MMIO(0x20ec), 0xffff, false},
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{RCS, _MMIO(0xb118), 0, false},
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{RCS, _MMIO(0xe100), 0xffff, true},
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{RCS, _MMIO(0xe180), 0xffff, true},
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{RCS, _MMIO(0xe184), 0xffff, true},
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{RCS, _MMIO(0xe188), 0xffff, true},
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{RCS, _MMIO(0xe194), 0xffff, true},
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{RCS, _MMIO(0x4de0), 0, false},
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{RCS, _MMIO(0x4de4), 0, false},
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{RCS, _MMIO(0x4de8), 0, false},
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{RCS, _MMIO(0x4dec), 0, false},
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{RCS, _MMIO(0x4df0), 0, false},
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{RCS, _MMIO(0x4df4), 0, false},
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{BCS, _MMIO(0x2229c), 0xffff, false},
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{BCS, _MMIO(0x2209c), 0xffff, false},
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{BCS, _MMIO(0x220c0), 0xffff, false},
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{BCS, _MMIO(0x22098), 0x0, false},
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{BCS, _MMIO(0x22028), 0x0, false},
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{VCS2, _MMIO(0x1c028), 0xffff, false},
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{VECS, _MMIO(0x1a028), 0xffff, false},
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{RCS, _MMIO(0x7304), 0xffff, true},
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{RCS, _MMIO(0x2248), 0x0, false},
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{RCS, _MMIO(0x940c), 0x0, false},
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{RCS, _MMIO(0x4ab8), 0x0, false},
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{RCS, _MMIO(0x4ab0), 0x0, false},
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{RCS, _MMIO(0x20d4), 0x0, false},
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{RCS, _MMIO(0xb004), 0x0, false},
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{RCS, _MMIO(0x20a0), 0x0, false},
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{RCS, _MMIO(0x20e4), 0xffff, false},
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};
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static u32 gen9_render_mocs[I915_NUM_ENGINES][64];
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static u32 gen9_render_mocs_L3[32];
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static void handle_tlb_pending_event(struct intel_vgpu *vgpu, int ring_id)
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{
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struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
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enum forcewake_domains fw;
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i915_reg_t reg;
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u32 regs[] = {
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[RCS] = 0x4260,
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[VCS] = 0x4264,
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[VCS2] = 0x4268,
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[BCS] = 0x426c,
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[VECS] = 0x4270,
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};
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if (WARN_ON(ring_id >= ARRAY_SIZE(regs)))
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return;
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if (!test_and_clear_bit(ring_id, (void *)vgpu->tlb_handle_pending))
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return;
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reg = _MMIO(regs[ring_id]);
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/* WaForceWakeRenderDuringMmioTLBInvalidate:skl
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* we need to put a forcewake when invalidating RCS TLB caches,
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* otherwise device can go to RC6 state and interrupt invalidation
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* process
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*/
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fw = intel_uncore_forcewake_for_reg(dev_priv, reg,
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FW_REG_READ | FW_REG_WRITE);
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if (ring_id == RCS && (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)))
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fw |= FORCEWAKE_RENDER;
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intel_uncore_forcewake_get(dev_priv, fw);
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I915_WRITE_FW(reg, 0x1);
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if (wait_for_atomic((I915_READ_FW(reg) == 0), 50))
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gvt_vgpu_err("timeout in invalidate ring (%d) tlb\n", ring_id);
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else
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vgpu_vreg(vgpu, regs[ring_id]) = 0;
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intel_uncore_forcewake_put(dev_priv, fw);
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gvt_dbg_core("invalidate TLB for ring %d\n", ring_id);
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}
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static void load_mocs(struct intel_vgpu *vgpu, int ring_id)
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{
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struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
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i915_reg_t offset, l3_offset;
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u32 regs[] = {
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[RCS] = 0xc800,
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[VCS] = 0xc900,
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[VCS2] = 0xca00,
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[BCS] = 0xcc00,
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[VECS] = 0xcb00,
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};
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int i;
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if (WARN_ON(ring_id >= ARRAY_SIZE(regs)))
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return;
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offset.reg = regs[ring_id];
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for (i = 0; i < 64; i++) {
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gen9_render_mocs[ring_id][i] = I915_READ_FW(offset);
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I915_WRITE(offset, vgpu_vreg(vgpu, offset));
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offset.reg += 4;
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}
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if (ring_id == RCS) {
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l3_offset.reg = 0xb020;
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for (i = 0; i < 32; i++) {
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gen9_render_mocs_L3[i] = I915_READ_FW(l3_offset);
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I915_WRITE_FW(l3_offset, vgpu_vreg(vgpu, l3_offset));
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l3_offset.reg += 4;
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}
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}
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}
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static void restore_mocs(struct intel_vgpu *vgpu, int ring_id)
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{
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struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
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i915_reg_t offset, l3_offset;
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u32 regs[] = {
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[RCS] = 0xc800,
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[VCS] = 0xc900,
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[VCS2] = 0xca00,
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[BCS] = 0xcc00,
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[VECS] = 0xcb00,
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};
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int i;
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if (WARN_ON(ring_id >= ARRAY_SIZE(regs)))
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return;
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offset.reg = regs[ring_id];
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for (i = 0; i < 64; i++) {
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vgpu_vreg(vgpu, offset) = I915_READ_FW(offset);
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I915_WRITE_FW(offset, gen9_render_mocs[ring_id][i]);
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offset.reg += 4;
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}
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if (ring_id == RCS) {
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l3_offset.reg = 0xb020;
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for (i = 0; i < 32; i++) {
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vgpu_vreg(vgpu, l3_offset) = I915_READ_FW(l3_offset);
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I915_WRITE_FW(l3_offset, gen9_render_mocs_L3[i]);
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l3_offset.reg += 4;
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}
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}
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}
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#define CTX_CONTEXT_CONTROL_VAL 0x03
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/* Switch ring mmio values (context) from host to a vgpu. */
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static void switch_mmio_to_vgpu(struct intel_vgpu *vgpu, int ring_id)
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{
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struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
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struct render_mmio *mmio;
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u32 v;
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int i, array_size;
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u32 *reg_state = vgpu->shadow_ctx->engine[ring_id].lrc_reg_state;
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u32 ctx_ctrl = reg_state[CTX_CONTEXT_CONTROL_VAL];
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u32 inhibit_mask =
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_MASKED_BIT_ENABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT);
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i915_reg_t last_reg = _MMIO(0);
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if (IS_SKYLAKE(vgpu->gvt->dev_priv)
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|| IS_KABYLAKE(vgpu->gvt->dev_priv)) {
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mmio = gen9_render_mmio_list;
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array_size = ARRAY_SIZE(gen9_render_mmio_list);
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load_mocs(vgpu, ring_id);
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} else {
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mmio = gen8_render_mmio_list;
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array_size = ARRAY_SIZE(gen8_render_mmio_list);
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}
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for (i = 0; i < array_size; i++, mmio++) {
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if (mmio->ring_id != ring_id)
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continue;
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mmio->value = I915_READ_FW(mmio->reg);
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/*
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* if it is an inhibit context, load in_context mmio
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* into HW by mmio write. If it is not, skip this mmio
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* write.
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*/
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if (mmio->in_context &&
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((ctx_ctrl & inhibit_mask) != inhibit_mask) &&
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i915_modparams.enable_execlists)
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continue;
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if (mmio->mask)
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v = vgpu_vreg(vgpu, mmio->reg) | (mmio->mask << 16);
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else
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v = vgpu_vreg(vgpu, mmio->reg);
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I915_WRITE_FW(mmio->reg, v);
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last_reg = mmio->reg;
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trace_render_mmio(vgpu->id, "load",
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i915_mmio_reg_offset(mmio->reg),
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mmio->value, v);
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}
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/* Make sure the swiched MMIOs has taken effect. */
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if (likely(INTEL_GVT_MMIO_OFFSET(last_reg)))
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I915_READ_FW(last_reg);
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handle_tlb_pending_event(vgpu, ring_id);
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}
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/* Switch ring mmio values (context) from vgpu to host. */
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static void switch_mmio_to_host(struct intel_vgpu *vgpu, int ring_id)
|
||
|
|
{
|
||
|
|
struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
|
||
|
|
struct render_mmio *mmio;
|
||
|
|
i915_reg_t last_reg = _MMIO(0);
|
||
|
|
u32 v;
|
||
|
|
int i, array_size;
|
||
|
|
|
||
|
|
if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
|
||
|
|
mmio = gen9_render_mmio_list;
|
||
|
|
array_size = ARRAY_SIZE(gen9_render_mmio_list);
|
||
|
|
restore_mocs(vgpu, ring_id);
|
||
|
|
} else {
|
||
|
|
mmio = gen8_render_mmio_list;
|
||
|
|
array_size = ARRAY_SIZE(gen8_render_mmio_list);
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < array_size; i++, mmio++) {
|
||
|
|
if (mmio->ring_id != ring_id)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
vgpu_vreg(vgpu, mmio->reg) = I915_READ_FW(mmio->reg);
|
||
|
|
|
||
|
|
if (mmio->mask) {
|
||
|
|
vgpu_vreg(vgpu, mmio->reg) &= ~(mmio->mask << 16);
|
||
|
|
v = mmio->value | (mmio->mask << 16);
|
||
|
|
} else
|
||
|
|
v = mmio->value;
|
||
|
|
|
||
|
|
if (mmio->in_context)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
I915_WRITE_FW(mmio->reg, v);
|
||
|
|
last_reg = mmio->reg;
|
||
|
|
|
||
|
|
trace_render_mmio(vgpu->id, "restore",
|
||
|
|
i915_mmio_reg_offset(mmio->reg),
|
||
|
|
mmio->value, v);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Make sure the swiched MMIOs has taken effect. */
|
||
|
|
if (likely(INTEL_GVT_MMIO_OFFSET(last_reg)))
|
||
|
|
I915_READ_FW(last_reg);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* intel_gvt_switch_render_mmio - switch mmio context of specific engine
|
||
|
|
* @pre: the last vGPU that own the engine
|
||
|
|
* @next: the vGPU to switch to
|
||
|
|
* @ring_id: specify the engine
|
||
|
|
*
|
||
|
|
* If pre is null indicates that host own the engine. If next is null
|
||
|
|
* indicates that we are switching to host workload.
|
||
|
|
*/
|
||
|
|
void intel_gvt_switch_mmio(struct intel_vgpu *pre,
|
||
|
|
struct intel_vgpu *next, int ring_id)
|
||
|
|
{
|
||
|
|
struct drm_i915_private *dev_priv;
|
||
|
|
|
||
|
|
if (WARN_ON(!pre && !next))
|
||
|
|
return;
|
||
|
|
|
||
|
|
gvt_dbg_render("switch ring %d from %s to %s\n", ring_id,
|
||
|
|
pre ? "vGPU" : "host", next ? "vGPU" : "HOST");
|
||
|
|
|
||
|
|
dev_priv = pre ? pre->gvt->dev_priv : next->gvt->dev_priv;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* We are using raw mmio access wrapper to improve the
|
||
|
|
* performace for batch mmio read/write, so we need
|
||
|
|
* handle forcewake mannually.
|
||
|
|
*/
|
||
|
|
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* TODO: Optimize for vGPU to vGPU switch by merging
|
||
|
|
* switch_mmio_to_host() and switch_mmio_to_vgpu().
|
||
|
|
*/
|
||
|
|
if (pre)
|
||
|
|
switch_mmio_to_host(pre, ring_id);
|
||
|
|
|
||
|
|
if (next)
|
||
|
|
switch_mmio_to_vgpu(next, ring_id);
|
||
|
|
|
||
|
|
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
|
||
|
|
}
|