2606f29162
NVKM is currently responsible for managing the allocation of a client's GPU address-space, but there's various use-cases (ie. HMM address-space mirroring) where giving a client more direct control is desirable. This commit allows for a VMM to be created where the area allocated for NVKM is limited to a client-specified window, the remainder of address- space is controlled directly by the client. Leaving a window is necessary to support various internal requirements, but also to support existing allocation interfaces as not all of the HW is capable of working with a HMM allocation. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
73 lines
2.3 KiB
C
73 lines
2.3 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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.invalidate_pdb = gf100_vmm_invalidate_pdb,
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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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.invalidate_pdb = gf100_vmm_invalidate_pdb,
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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, bool managed, u64 addr, u64 size,
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void *argv, u32 argc, struct lock_class_key *key,
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const char *name, struct nvkm_vmm **pvmm)
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{
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return gf100_vmm_new_(&gk20a_vmm_16, &gk20a_vmm_17, mmu, managed, addr,
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size, argv, argc, key, name, pvmm);
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}
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