diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c new file mode 100644 index 000000000..31984671d --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c @@ -0,0 +1,112 @@ +/* + * 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 <subdev/timer.h> + +static void +nv41_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 >> 7) | 0x00000001; /* VALID. */ + while (ptes--) { + VMM_WO032(pt, vmm, ptei++ * 4, data); + data += 0x00000020; + } +} + +static void +nv41_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, nv41_vmm_pgt_pte); +} + +static void +nv41_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--) { + const u32 data = (*map->dma++ >> 7) | 0x00000001; + VMM_WO032(pt, vmm, ptei++ * 4, data); + } + nvkm_done(pt->memory); +#else + VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv41_vmm_pgt_pte); +#endif +} + +static void +nv41_vmm_pgt_unmap(struct nvkm_vmm *vmm, + struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes) +{ + VMM_FO032(pt, vmm, ptei * 4, 0, ptes); +} + +static const struct nvkm_vmm_desc_func +nv41_vmm_desc_pgt = { + .unmap = nv41_vmm_pgt_unmap, + .dma = nv41_vmm_pgt_dma, + .sgl = nv41_vmm_pgt_sgl, +}; + +static const struct nvkm_vmm_desc +nv41_vmm_desc_12[] = { + { PGT, 17, 4, 0x1000, &nv41_vmm_desc_pgt }, + {} +}; + +static void +nv41_vmm_flush(struct nvkm_vmm *vmm, int level) +{ + struct nvkm_device *device = vmm->mmu->subdev.device; + + mutex_lock(&vmm->mmu->mutex); + nvkm_wr32(device, 0x100810, 0x00000022); + nvkm_msec(device, 2000, + if (nvkm_rd32(device, 0x100810) & 0x00000020) + break; + ); + nvkm_wr32(device, 0x100810, 0x00000000); + mutex_unlock(&vmm->mmu->mutex); +} + +static const struct nvkm_vmm_func +nv41_vmm = { + .valid = nv04_vmm_valid, + .flush = nv41_vmm_flush, + .page = { + { 12, &nv41_vmm_desc_12[0], NVKM_VMM_PAGE_HOST }, + {} + } +}; + +int +nv41_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) +{ + return nv04_vmm_new_(&nv41_vmm, mmu, 0, managed, addr, size, + argv, argc, key, name, pvmm); +} |