1 /* $NetBSD: nouveau_nvkm_subdev_mmu_nv50.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $ */
2
3 /*
4 * Copyright 2010 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_nv50.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $");
28
29 #include "mem.h"
30 #include "vmm.h"
31
32 #include <nvif/class.h>
33
34 const u8 *
nv50_mmu_kind(struct nvkm_mmu * base,int * count,u8 * invalid)35 nv50_mmu_kind(struct nvkm_mmu *base, int *count, u8 *invalid)
36 {
37 /* 0x01: no bank swizzle
38 * 0x02: bank swizzled
39 * 0x7f: invalid
40 *
41 * 0x01/0x02 are values understood by the VRAM allocator,
42 * and are required to avoid mixing the two types within
43 * a certain range.
44 */
45 static const u8
46 kind[128] = {
47 0x01, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, /* 0x00 */
48 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
49 0x01, 0x01, 0x01, 0x01, 0x7f, 0x7f, 0x7f, 0x7f, /* 0x10 */
50 0x02, 0x02, 0x02, 0x02, 0x7f, 0x7f, 0x7f, 0x7f,
51 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x7f, /* 0x20 */
52 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x7f,
53 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, /* 0x30 */
54 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
55 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, /* 0x40 */
56 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x7f, 0x7f,
57 0x7f, 0x7f, 0x7f, 0x7f, 0x01, 0x01, 0x01, 0x7f, /* 0x50 */
58 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
59 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x7f, /* 0x60 */
60 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
61 0x01, 0x7f, 0x02, 0x7f, 0x01, 0x7f, 0x02, 0x7f, /* 0x70 */
62 0x01, 0x01, 0x02, 0x02, 0x01, 0x01, 0x7f, 0x7f
63 };
64 *count = ARRAY_SIZE(kind);
65 *invalid = 0x7f;
66 return kind;
67 }
68
69 static const struct nvkm_mmu_func
70 nv50_mmu = {
71 .dma_bits = 40,
72 .mmu = {{ -1, -1, NVIF_CLASS_MMU_NV50}},
73 .mem = {{ -1, 0, NVIF_CLASS_MEM_NV50}, nv50_mem_new, nv50_mem_map },
74 .vmm = {{ -1, -1, NVIF_CLASS_VMM_NV50}, nv50_vmm_new, false, 0x1400 },
75 .kind = nv50_mmu_kind,
76 };
77
78 int
nv50_mmu_new(struct nvkm_device * device,int index,struct nvkm_mmu ** pmmu)79 nv50_mmu_new(struct nvkm_device *device, int index, struct nvkm_mmu **pmmu)
80 {
81 return nvkm_mmu_new_(&nv50_mmu, device, index, pmmu);
82 }
83