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152eeae163
vgpu needs to call nvgpu_init_ltc_support to floor sweep and set ltc_count. And set gops.ltc.set_enabled to null as guest is not allowed to change ltc settings. Jira VQRM-2345 Change-Id: I83517d631aa947db4a0a4c312f0cecda9ba03973 Signed-off-by: Richard Zhao <rizhao@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1703626 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/*
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* Copyright (c) 2017-2018, NVIDIA 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 shall be included in
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* all copies or substantial portions of the 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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#include <nvgpu/ltc.h>
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#include <nvgpu/dma.h>
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#include <nvgpu/nvgpu_mem.h>
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#include "gk20a/gk20a.h"
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#include "gk20a/gr_gk20a.h"
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int nvgpu_init_ltc_support(struct gk20a *g)
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{
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nvgpu_spinlock_init(&g->ltc_enabled_lock);
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g->mm.ltc_enabled_current = true;
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g->mm.ltc_enabled_target = true;
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if (g->ops.ltc.init_fs_state)
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g->ops.ltc.init_fs_state(g);
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return 0;
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}
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void nvgpu_ltc_sync_enabled(struct gk20a *g)
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{
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if (!g->ops.ltc.set_enabled)
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return;
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nvgpu_spinlock_acquire(&g->ltc_enabled_lock);
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if (g->mm.ltc_enabled_current != g->mm.ltc_enabled_target) {
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g->ops.ltc.set_enabled(g, g->mm.ltc_enabled_target);
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g->mm.ltc_enabled_current = g->mm.ltc_enabled_target;
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}
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nvgpu_spinlock_release(&g->ltc_enabled_lock);
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}
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int nvgpu_ltc_alloc_cbc(struct gk20a *g, size_t compbit_backing_size)
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{
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struct gr_gk20a *gr = &g->gr;
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unsigned long flags = 0;
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if (nvgpu_mem_is_valid(&gr->compbit_store.mem))
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return 0;
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if (!nvgpu_iommuable(g))
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flags = NVGPU_DMA_FORCE_CONTIGUOUS;
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return nvgpu_dma_alloc_flags_sys(g,
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flags,
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compbit_backing_size,
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&gr->compbit_store.mem);
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}
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