1 /* $NetBSD: nouveau_nvkm_subdev_mmu_vmmgm200.c,v 1.3 2021/12/19 10:51:58 riastradh Exp $ */
2
3 /*
4 * Copyright 2017 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 #include <sys/cdefs.h>
25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_mmu_vmmgm200.c,v 1.3 2021/12/19 10:51:58 riastradh Exp $");
26
27 #include "vmm.h"
28
29 #include <nvif/ifb00d.h>
30 #include <nvif/unpack.h>
31
32 static void
gm200_vmm_pgt_sparse(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 ptei,u32 ptes)33 gm200_vmm_pgt_sparse(struct nvkm_vmm *vmm,
34 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
35 {
36 /* VALID_FALSE + VOL tells the MMU to treat the PTE as sparse. */
37 VMM_FO064(pt, vmm, ptei * 8, BIT_ULL(32) /* VOL. */, ptes);
38 }
39
40 static const struct nvkm_vmm_desc_func
41 gm200_vmm_spt = {
42 .unmap = gf100_vmm_pgt_unmap,
43 .sparse = gm200_vmm_pgt_sparse,
44 .mem = gf100_vmm_pgt_mem,
45 .dma = gf100_vmm_pgt_dma,
46 #ifndef __NetBSD__
47 .sgl = gf100_vmm_pgt_sgl,
48 #endif
49 };
50
51 static const struct nvkm_vmm_desc_func
52 gm200_vmm_lpt = {
53 .invalid = gk104_vmm_lpt_invalid,
54 .unmap = gf100_vmm_pgt_unmap,
55 .sparse = gm200_vmm_pgt_sparse,
56 .mem = gf100_vmm_pgt_mem,
57 };
58
59 static void
gm200_vmm_pgd_sparse(struct nvkm_vmm * vmm,struct nvkm_mmu_pt * pt,u32 pdei,u32 pdes)60 gm200_vmm_pgd_sparse(struct nvkm_vmm *vmm,
61 struct nvkm_mmu_pt *pt, u32 pdei, u32 pdes)
62 {
63 /* VALID_FALSE + VOL_BIG tells the MMU to treat the PDE as sparse. */
64 VMM_FO064(pt, vmm, pdei * 8, BIT_ULL(35) /* VOL_BIG. */, pdes);
65 }
66
67 static const struct nvkm_vmm_desc_func
68 gm200_vmm_pgd = {
69 .unmap = gf100_vmm_pgt_unmap,
70 .sparse = gm200_vmm_pgd_sparse,
71 .pde = gf100_vmm_pgd_pde,
72 };
73
74 const struct nvkm_vmm_desc
75 gm200_vmm_desc_17_12[] = {
76 { SPT, 15, 8, 0x1000, &gm200_vmm_spt },
77 { PGD, 13, 8, 0x1000, &gm200_vmm_pgd },
78 {}
79 };
80
81 const struct nvkm_vmm_desc
82 gm200_vmm_desc_17_17[] = {
83 { LPT, 10, 8, 0x1000, &gm200_vmm_lpt },
84 { PGD, 13, 8, 0x1000, &gm200_vmm_pgd },
85 {}
86 };
87
88 const struct nvkm_vmm_desc
89 gm200_vmm_desc_16_12[] = {
90 { SPT, 14, 8, 0x1000, &gm200_vmm_spt },
91 { PGD, 14, 8, 0x1000, &gm200_vmm_pgd },
92 {}
93 };
94
95 const struct nvkm_vmm_desc
96 gm200_vmm_desc_16_16[] = {
97 { LPT, 10, 8, 0x1000, &gm200_vmm_lpt },
98 { PGD, 14, 8, 0x1000, &gm200_vmm_pgd },
99 {}
100 };
101
102 int
gm200_vmm_join_(struct nvkm_vmm * vmm,struct nvkm_memory * inst,u64 base)103 gm200_vmm_join_(struct nvkm_vmm *vmm, struct nvkm_memory *inst, u64 base)
104 {
105 if (vmm->func->page[1].shift == 16)
106 base |= BIT_ULL(11);
107 return gf100_vmm_join_(vmm, inst, base);
108 }
109
110 int
gm200_vmm_join(struct nvkm_vmm * vmm,struct nvkm_memory * inst)111 gm200_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
112 {
113 return gm200_vmm_join_(vmm, inst, 0);
114 }
115
116 static const struct nvkm_vmm_func
117 gm200_vmm_17 = {
118 .join = gm200_vmm_join,
119 .part = gf100_vmm_part,
120 .aper = gf100_vmm_aper,
121 .valid = gf100_vmm_valid,
122 .flush = gf100_vmm_flush,
123 .invalidate_pdb = gf100_vmm_invalidate_pdb,
124 .page = {
125 { 27, &gm200_vmm_desc_17_17[1], NVKM_VMM_PAGE_Sxxx },
126 { 17, &gm200_vmm_desc_17_17[0], NVKM_VMM_PAGE_SVxC },
127 { 12, &gm200_vmm_desc_17_12[0], NVKM_VMM_PAGE_SVHx },
128 {}
129 }
130 };
131
132 static const struct nvkm_vmm_func
133 gm200_vmm_16 = {
134 .join = gm200_vmm_join,
135 .part = gf100_vmm_part,
136 .aper = gf100_vmm_aper,
137 .valid = gf100_vmm_valid,
138 .flush = gf100_vmm_flush,
139 .invalidate_pdb = gf100_vmm_invalidate_pdb,
140 .page = {
141 { 27, &gm200_vmm_desc_16_16[1], NVKM_VMM_PAGE_Sxxx },
142 { 16, &gm200_vmm_desc_16_16[0], NVKM_VMM_PAGE_SVxC },
143 { 12, &gm200_vmm_desc_16_12[0], NVKM_VMM_PAGE_SVHx },
144 {}
145 }
146 };
147
148 int
gm200_vmm_new_(const struct nvkm_vmm_func * func_16,const struct nvkm_vmm_func * func_17,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)149 gm200_vmm_new_(const struct nvkm_vmm_func *func_16,
150 const struct nvkm_vmm_func *func_17,
151 struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
152 void *argv, u32 argc, struct lock_class_key *key,
153 const char *name, struct nvkm_vmm **pvmm)
154 {
155 const struct nvkm_vmm_func *func;
156 union {
157 struct gm200_vmm_vn vn;
158 struct gm200_vmm_v0 v0;
159 } *args = argv;
160 int ret = -ENOSYS;
161
162 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
163 switch (args->v0.bigpage) {
164 case 16: func = func_16; break;
165 case 17: func = func_17; break;
166 default:
167 return -EINVAL;
168 }
169 } else
170 if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
171 func = func_17;
172 } else
173 return ret;
174
175 return nvkm_vmm_new_(func, mmu, 0, managed, addr, size, key, name, pvmm);
176 }
177
178 int
gm200_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)179 gm200_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
180 void *argv, u32 argc, struct lock_class_key *key,
181 const char *name, struct nvkm_vmm **pvmm)
182 {
183 return gm200_vmm_new_(&gm200_vmm_16, &gm200_vmm_17, mmu, managed, addr,
184 size, argv, argc, key, name, pvmm);
185 }
186
187 int
gm200_vmm_new_fixed(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)188 gm200_vmm_new_fixed(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
189 void *argv, u32 argc, struct lock_class_key *key,
190 const char *name, struct nvkm_vmm **pvmm)
191 {
192 return gf100_vmm_new_(&gm200_vmm_16, &gm200_vmm_17, mmu, managed, addr,
193 size, argv, argc, key, name, pvmm);
194 }
195