Release 4.17 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv04.c
/*
* 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"
#include <nvif/if000d.h>
#include <nvif/unpack.h>
static inline void
nv04_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)
{
u32 data = addr | 0x00000003; /* PRESENT, RW. */
while (ptes--) {
VMM_WO032(pt, vmm, 8 + ptei++ * 4, data);
data += 0x00001000;
}
}
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static void
nv04_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
{
VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, nv04_vmm_pgt_pte);
}
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static void
nv04_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
{
#if PAGE_SHIFT == 12
nvkm_kmap(pt->memory);
while (ptes--)
VMM_WO032(pt, vmm, 8 + (ptei++ * 4), *map->dma++ | 0x00000003);
nvkm_done(pt->memory);
#else
VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv04_vmm_pgt_pte);
#endif
}
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static void
nv04_vmm_pgt_unmap(struct nvkm_vmm *vmm,
struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
{
VMM_FO032(pt, vmm, 8 + (ptei * 4), 0, ptes);
}
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static const struct nvkm_vmm_desc_func
nv04_vmm_desc_pgt = {
.unmap = nv04_vmm_pgt_unmap,
.dma = nv04_vmm_pgt_dma,
.sgl = nv04_vmm_pgt_sgl,
};
static const struct nvkm_vmm_desc
nv04_vmm_desc_12[] = {
{ PGT, 15, 4, 0x1000, &nv04_vmm_desc_pgt },
{}
};
int
nv04_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc,
struct nvkm_vmm_map *map)
{
union {
struct nv04_vmm_map_vn vn;
} *args = argv;
int ret = -ENOSYS;
if ((ret = nvif_unvers(ret, &argv, &argc, args->vn)))
VMM_DEBUG(vmm, "args");
return ret;
}
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static const struct nvkm_vmm_func
nv04_vmm = {
.valid = nv04_vmm_valid,
.page = {
{ 12, &nv04_vmm_desc_12[0], NVKM_VMM_PAGE_HOST },
{}
}
};
int
nv04_vmm_new_(const struct nvkm_vmm_func *func, struct nvkm_mmu *mmu,
u32 pd_header, u64 addr, u64 size, void *argv, u32 argc,
struct lock_class_key *key, const char *name,
struct nvkm_vmm **pvmm)
{
union {
struct nv04_vmm_vn vn;
} *args = argv;
int ret;
ret = nvkm_vmm_new_(func, mmu, pd_header, addr, size, key, name, pvmm);
if (ret)
return ret;
return nvif_unvers(-ENOSYS, &argv, &argc, args->vn);
}
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int
nv04_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_memory *mem;
struct nvkm_vmm *vmm;
int ret;
ret = nv04_vmm_new_(&nv04_vmm, mmu, 8, addr, size,
argv, argc, key, name, &vmm);
*pvmm = vmm;
if (ret)
return ret;
mem = vmm->pd->pt[0]->memory;
nvkm_kmap(mem);
nvkm_wo32(mem, 0x00000, 0x0002103d); /* PCI, RW, PT, !LN */
nvkm_wo32(mem, 0x00004, vmm->limit - 1);
nvkm_done(mem);
return 0;
}
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| Ben Skeggs | 651 | 100.00% | 2 | 100.00% |
| Total | 651 | 100.00% | 2 | 100.00% |
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