1 /* $NetBSD: nouveau_nvkm_subdev_mmu_nv41.c,v 1.3 2021/12/18 23:45:40 riastradh Exp $ */
2
3 /*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_mmu_nv41.c,v 1.3 2021/12/18 23:45:40 riastradh Exp $");
28
29 #include "mem.h"
30 #include "vmm.h"
31
32 #include <core/option.h>
33
34 #include <nvif/class.h>
35
36 static void
nv41_mmu_init(struct nvkm_mmu * mmu)37 nv41_mmu_init(struct nvkm_mmu *mmu)
38 {
39 struct nvkm_device *device = mmu->subdev.device;
40 nvkm_wr32(device, 0x100800, 0x00000002 | mmu->vmm->pd->pt[0]->addr);
41 nvkm_mask(device, 0x10008c, 0x00000100, 0x00000100);
42 nvkm_wr32(device, 0x100820, 0x00000000);
43 }
44
45 static const struct nvkm_mmu_func
46 nv41_mmu = {
47 .init = nv41_mmu_init,
48 .dma_bits = 39,
49 .mmu = {{ -1, -1, NVIF_CLASS_MMU_NV04}},
50 .mem = {{ -1, -1, NVIF_CLASS_MEM_NV04}, nv04_mem_new, nv04_mem_map },
51 .vmm = {{ -1, -1, NVIF_CLASS_VMM_NV04}, nv41_vmm_new, true },
52 };
53
54 int
nv41_mmu_new(struct nvkm_device * device,int index,struct nvkm_mmu ** pmmu)55 nv41_mmu_new(struct nvkm_device *device, int index, struct nvkm_mmu **pmmu)
56 {
57 if (device->type == NVKM_DEVICE_AGP ||
58 !nvkm_boolopt(device->cfgopt, "NvPCIE", true))
59 return nv04_mmu_new(device, index, pmmu);
60
61 return nvkm_mmu_new_(&nv41_mmu, device, index, pmmu);
62 }
63