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>
45 lines
1.7 KiB
C
45 lines
1.7 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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static const struct nvkm_vmm_func
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mcp77_vmm = {
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.join = nv50_vmm_join,
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.part = nv50_vmm_part,
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.valid = nv50_vmm_valid,
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.flush = nv50_vmm_flush,
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.page_block = 1 << 29,
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.page = {
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{ 16, &nv50_vmm_desc_16[0], NVKM_VMM_PAGE_xVxx },
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{ 12, &nv50_vmm_desc_12[0], NVKM_VMM_PAGE_xVHx },
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{}
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}
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};
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int
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mcp77_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 nv04_vmm_new_(&mcp77_vmm, mmu, 0, managed, addr, size,
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argv, argc, key, name, pvmm);
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}
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