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