b597764327
Adds support for: - 64KiB big page size. - System-memory PTs. - LPTE "invalid" state. - (Tegra) Use of video memory aperture. Adds support for marking LPTEs invalid, resulting in the corresponding SPTEs being ignored, which is supposed to speed up TLB invalidates. On The Tegra side, this will switch to using the video memory aperture for all mappings. The HW will still target non-coherent system memory, but this aperture needs to be selected in order to support compression. Tegra's instmem backend somewhat cheated to get this effect previously. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/*
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* Copyright 2017 Red Hat Inc.
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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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "vmm.h"
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#include <core/memory.h>
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int
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gk20a_vmm_aper(enum nvkm_memory_target target)
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{
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switch (target) {
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case NVKM_MEM_TARGET_NCOH: return 0;
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default:
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return -EINVAL;
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}
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}
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static const struct nvkm_vmm_func
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gk20a_vmm_17 = {
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.join = gf100_vmm_join,
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.part = gf100_vmm_part,
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.aper = gf100_vmm_aper,
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.valid = gf100_vmm_valid,
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.flush = gf100_vmm_flush,
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.page = {
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{ 17, &gk104_vmm_desc_17_17[0], NVKM_VMM_PAGE_xxHC },
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{ 12, &gk104_vmm_desc_17_12[0], NVKM_VMM_PAGE_xxHx },
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{}
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}
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};
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static const struct nvkm_vmm_func
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gk20a_vmm_16 = {
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.join = gf100_vmm_join,
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.part = gf100_vmm_part,
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.aper = gf100_vmm_aper,
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.valid = gf100_vmm_valid,
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.flush = gf100_vmm_flush,
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.page = {
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{ 16, &gk104_vmm_desc_16_16[0], NVKM_VMM_PAGE_xxHC },
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{ 12, &gk104_vmm_desc_16_12[0], NVKM_VMM_PAGE_xxHx },
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{}
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}
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};
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int
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gk20a_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
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struct lock_class_key *key, const char *name,
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struct nvkm_vmm **pvmm)
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{
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return gf100_vmm_new_(&gk20a_vmm_16, &gk20a_vmm_17, mmu, addr,
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size, argv, argc, key, name, pvmm);
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}
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