/*
* 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 | 0 x00000003; /* PRESENT, RW. */
while (ptes--) {
VMM_WO032(pt, vmm, 8 + ptei++ * 4 , data);
data += 0 x00001000;
}
}
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);
}
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++ | 0 x00000003);
nvkm_done(pt->memory);
#else
VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv04_vmm_pgt_pte);
#endif
}
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);
}
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 , 0 x1000, &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;
}
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, bool managed, 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, managed, addr, size,
key, name, pvmm);
if (ret)
return ret;
return nvif_unvers(-ENOSYS, &argv, &argc, args->vn);
}
int
nv04_vmm_new(struct nvkm_mmu *mmu, bool managed, 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 , managed, 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, 0 x00000, 0 x0002103d); /* PCI, RW, PT, !LN */
nvkm_wo32(mem, 0 x00004, vmm->limit - 1 );
nvkm_done(mem);
return 0 ;
}
Messung V0.5 in Prozent C=98 H=95 G=96
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-07)
¤
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