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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 "vmmgf100.h"
#include <core/gpuobj.h>
#include <subdev/fb.h>
static void
gf100_vmm_part(struct nvkm_vmm *base, struct nvkm_gpuobj *inst)
{
/*XXX: ideally we'd do this, but there's some chicken-and-egg
* problems with the bootstrapped instmem vmm.
*/
#if 0
nvkm_kmap(inst);
nvkm_wo32(inst, 0x0200, 0x00000000);
nvkm_wo32(inst, 0x0204, 0x00000000);
nvkm_wo32(inst, 0x0208, 0x00000000);
nvkm_wo32(inst, 0x020c, 0x00000000);
nvkm_done(inst);
#endif
}
static int
gf100_vmm_join(struct nvkm_vmm *base, struct nvkm_gpuobj *inst)
{
struct gf100_vmm *vmm = gf100_vmm(base);
u64 addr = nvkm_memory_addr(vmm->pd);
u64 limit = vmm->base.limit;
nvkm_kmap(inst);
nvkm_wo32(inst, 0x0200, lower_32_bits(addr));
nvkm_wo32(inst, 0x0204, upper_32_bits(addr));
nvkm_wo32(inst, 0x0208, lower_32_bits(limit));
nvkm_wo32(inst, 0x020c, upper_32_bits(limit));
nvkm_done(inst);
return 0;
}
static const struct nvkm_vmm_page *
gf100_vmm_page(struct nvkm_vmm *base)
{
struct gf100_vmm *vmm = gf100_vmm(base);
static const struct nvkm_vmm_page
page_17[] = {
{ 17, NVKM_VMM_PAGE_COMP },
{ 12 },
{}
};
switch (vmm->base.mmu->subdev.device->fb->page) {
case 17: return page_17;
default:
WARN_ON(1);
return NULL;
}
}
static void *
gf100_vmm_dtor(struct nvkm_vmm *base)
{
struct gf100_vmm *vmm = gf100_vmm(base);
nvkm_memory_del(&vmm->pd);
return vmm;
}
static const struct nvkm_vmm_func
gf100_vmm_ = {
.dtor = gf100_vmm_dtor,
.page = gf100_vmm_page,
.join = gf100_vmm_join,
.part = gf100_vmm_part,
};
int
gf100_vmm_new_(const struct gf100_vmm_func *func, struct nvkm_mmu *mmu,
u64 addr, u64 size, void *argv, u32 argc,
struct lock_class_key *key, struct nvkm_vmm **pvmm)
{
struct gf100_vmm *vmm;
int ret;
if (argc != 0)
return -ENOSYS;
if (!(vmm = kzalloc(sizeof(*vmm), GFP_KERNEL)))
return -ENOMEM;
vmm->func = func;
*pvmm = &vmm->base;
ret = nvkm_vmm_ctor(&gf100_vmm_, mmu, 40, addr, size, key, &vmm->base);
if (ret)
return ret;
ret = nvkm_memory_new(mmu->subdev.device, NVKM_MEM_TARGET_INST,
(vmm->base.lpde + 1) * 8, 0x1000, true,
&vmm->pd);
if (ret)
return ret;
return 0;
}
static const struct gf100_vmm_func
gf100_vmm = {
};
static int
gf100_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
struct lock_class_key *key, struct nvkm_vmm **pvmm)
{
return gf100_vmm_new_(&gf100_vmm, mmu, addr, size, argv, argc, key, pvmm);
}
const struct nvkm_vmm_user
gf100_vmm_user = {
.ctor = gf100_vmm_new,
};
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