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/*
* Copyright 2017 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "vmm.h"
static const struct nvkm_vmm_desc_func
nv44_vmm_desc_pgt = {
};
static const struct nvkm_vmm_desc
nv44_vmm_desc_12[] = {
{ PGT, 17, 4, 0x80000, &nv44_vmm_desc_pgt },
{}
};
static const struct nvkm_vmm_func
nv44_vmm = {
.page = {
{ 12, &nv44_vmm_desc_12[0], NVKM_VMM_PAGE_HOST },
{}
}
};
int
nv44_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
struct lock_class_key *key, const char *name,
struct nvkm_vmm **pvmm)
{
struct nvkm_subdev *subdev = &mmu->subdev;
struct nvkm_vmm *vmm;
int ret;
ret = nv04_vmm_new_(&nv44_vmm, mmu, 0, addr, size,
argv, argc, key, name, &vmm);
*pvmm = vmm;
if (ret)
return ret;
vmm->nullp = dma_alloc_coherent(subdev->device->dev, 16 * 1024,
&vmm->null, GFP_KERNEL);
if (!vmm->nullp) {
nvkm_warn(subdev, "unable to allocate dummy pages\n");
vmm->null = 0;
}
return 0;
}
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