113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
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/*
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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 <subdev/timer.h>
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static void
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nv41_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 >> 7) | 0x00000001; /* VALID. */
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while (ptes--) {
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VMM_WO032(pt, vmm, ptei++ * 4, data);
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data += 0x00000020;
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}
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}
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static void
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nv41_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, nv41_vmm_pgt_pte);
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}
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static void
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nv41_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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const u32 data = (*map->dma++ >> 7) | 0x00000001;
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VMM_WO032(pt, vmm, ptei++ * 4, data);
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}
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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, nv41_vmm_pgt_pte);
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#endif
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}
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static void
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nv41_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, ptei * 4, 0, ptes);
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}
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static const struct nvkm_vmm_desc_func
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nv41_vmm_desc_pgt = {
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.unmap = nv41_vmm_pgt_unmap,
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.dma = nv41_vmm_pgt_dma,
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.sgl = nv41_vmm_pgt_sgl,
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};
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static const struct nvkm_vmm_desc
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nv41_vmm_desc_12[] = {
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{ PGT, 17, 4, 0x1000, &nv41_vmm_desc_pgt },
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{}
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};
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static void
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nv41_vmm_flush(struct nvkm_vmm *vmm, int level)
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{
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struct nvkm_device *device = vmm->mmu->subdev.device;
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mutex_lock(&vmm->mmu->mutex);
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nvkm_wr32(device, 0x100810, 0x00000022);
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nvkm_msec(device, 2000,
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if (nvkm_rd32(device, 0x100810) & 0x00000020)
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break;
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);
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nvkm_wr32(device, 0x100810, 0x00000000);
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mutex_unlock(&vmm->mmu->mutex);
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}
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static const struct nvkm_vmm_func
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nv41_vmm = {
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.valid = nv04_vmm_valid,
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.flush = nv41_vmm_flush,
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.page = {
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{ 12, &nv41_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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nv41_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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return nv04_vmm_new_(&nv41_vmm, mmu, 0, managed, addr, size,
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argv, argc, key, name, pvmm);
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}
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