1 /*
2  * Copyright 2017 Red Hat Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  */
22 #include "vmm.h"
23 
24 #include <nvif/ifb00d.h>
25 #include <nvif/unpack.h>
26 
27 static void
28 gm200_vmm_pgt_sparse(struct nvkm_vmm *vmm,
29 		     struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
30 {
31 	/* VALID_FALSE + VOL tells the MMU to treat the PTE as sparse. */
32 	VMM_FO064(pt, vmm, ptei * 8, BIT_ULL(32) /* VOL. */, ptes);
33 }
34 
35 static const struct nvkm_vmm_desc_func
36 gm200_vmm_spt = {
37 	.unmap = gf100_vmm_pgt_unmap,
38 	.sparse = gm200_vmm_pgt_sparse,
39 	.mem = gf100_vmm_pgt_mem,
40 	.dma = gf100_vmm_pgt_dma,
41 	.sgl = gf100_vmm_pgt_sgl,
42 };
43 
44 static const struct nvkm_vmm_desc_func
45 gm200_vmm_lpt = {
46 	.invalid = gk104_vmm_lpt_invalid,
47 	.unmap = gf100_vmm_pgt_unmap,
48 	.sparse = gm200_vmm_pgt_sparse,
49 	.mem = gf100_vmm_pgt_mem,
50 };
51 
52 static void
53 gm200_vmm_pgd_sparse(struct nvkm_vmm *vmm,
54 		     struct nvkm_mmu_pt *pt, u32 pdei, u32 pdes)
55 {
56 	/* VALID_FALSE + VOL_BIG tells the MMU to treat the PDE as sparse. */
57 	VMM_FO064(pt, vmm, pdei * 8, BIT_ULL(35) /* VOL_BIG. */, pdes);
58 }
59 
60 static const struct nvkm_vmm_desc_func
61 gm200_vmm_pgd = {
62 	.unmap = gf100_vmm_pgt_unmap,
63 	.sparse = gm200_vmm_pgd_sparse,
64 	.pde = gf100_vmm_pgd_pde,
65 };
66 
67 const struct nvkm_vmm_desc
68 gm200_vmm_desc_17_12[] = {
69 	{ SPT, 15, 8, 0x1000, &gm200_vmm_spt },
70 	{ PGD, 13, 8, 0x1000, &gm200_vmm_pgd },
71 	{}
72 };
73 
74 const struct nvkm_vmm_desc
75 gm200_vmm_desc_17_17[] = {
76 	{ LPT, 10, 8, 0x1000, &gm200_vmm_lpt },
77 	{ PGD, 13, 8, 0x1000, &gm200_vmm_pgd },
78 	{}
79 };
80 
81 const struct nvkm_vmm_desc
82 gm200_vmm_desc_16_12[] = {
83 	{ SPT, 14, 8, 0x1000, &gm200_vmm_spt },
84 	{ PGD, 14, 8, 0x1000, &gm200_vmm_pgd },
85 	{}
86 };
87 
88 const struct nvkm_vmm_desc
89 gm200_vmm_desc_16_16[] = {
90 	{ LPT, 10, 8, 0x1000, &gm200_vmm_lpt },
91 	{ PGD, 14, 8, 0x1000, &gm200_vmm_pgd },
92 	{}
93 };
94 
95 int
96 gm200_vmm_join_(struct nvkm_vmm *vmm, struct nvkm_memory *inst, u64 base)
97 {
98 	if (vmm->func->page[1].shift == 16)
99 		base |= BIT_ULL(11);
100 	return gf100_vmm_join_(vmm, inst, base);
101 }
102 
103 int
104 gm200_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
105 {
106 	return gm200_vmm_join_(vmm, inst, 0);
107 }
108 
109 static const struct nvkm_vmm_func
110 gm200_vmm_17 = {
111 	.join = gm200_vmm_join,
112 	.part = gf100_vmm_part,
113 	.aper = gf100_vmm_aper,
114 	.valid = gf100_vmm_valid,
115 	.flush = gf100_vmm_flush,
116 	.invalidate_pdb = gf100_vmm_invalidate_pdb,
117 	.page = {
118 		{ 27, &gm200_vmm_desc_17_17[1], NVKM_VMM_PAGE_Sxxx },
119 		{ 17, &gm200_vmm_desc_17_17[0], NVKM_VMM_PAGE_SVxC },
120 		{ 12, &gm200_vmm_desc_17_12[0], NVKM_VMM_PAGE_SVHx },
121 		{}
122 	}
123 };
124 
125 static const struct nvkm_vmm_func
126 gm200_vmm_16 = {
127 	.join = gm200_vmm_join,
128 	.part = gf100_vmm_part,
129 	.aper = gf100_vmm_aper,
130 	.valid = gf100_vmm_valid,
131 	.flush = gf100_vmm_flush,
132 	.invalidate_pdb = gf100_vmm_invalidate_pdb,
133 	.page = {
134 		{ 27, &gm200_vmm_desc_16_16[1], NVKM_VMM_PAGE_Sxxx },
135 		{ 16, &gm200_vmm_desc_16_16[0], NVKM_VMM_PAGE_SVxC },
136 		{ 12, &gm200_vmm_desc_16_12[0], NVKM_VMM_PAGE_SVHx },
137 		{}
138 	}
139 };
140 
141 int
142 gm200_vmm_new_(const struct nvkm_vmm_func *func_16,
143 	       const struct nvkm_vmm_func *func_17,
144 	       struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
145 	       void *argv, u32 argc, struct lock_class_key *key,
146 	       const char *name, struct nvkm_vmm **pvmm)
147 {
148 	const struct nvkm_vmm_func *func;
149 	union {
150 		struct gm200_vmm_vn vn;
151 		struct gm200_vmm_v0 v0;
152 	} *args = argv;
153 	int ret = -ENOSYS;
154 
155 	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
156 		switch (args->v0.bigpage) {
157 		case 16: func = func_16; break;
158 		case 17: func = func_17; break;
159 		default:
160 			return -EINVAL;
161 		}
162 	} else
163 	if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
164 		func = func_17;
165 	} else
166 		return ret;
167 
168 	return nvkm_vmm_new_(func, mmu, 0, managed, addr, size, key, name, pvmm);
169 }
170 
171 int
172 gm200_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
173 	      void *argv, u32 argc, struct lock_class_key *key,
174 	      const char *name, struct nvkm_vmm **pvmm)
175 {
176 	return gm200_vmm_new_(&gm200_vmm_16, &gm200_vmm_17, mmu, managed, addr,
177 			      size, argv, argc, key, name, pvmm);
178 }
179 
180 int
181 gm200_vmm_new_fixed(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
182 		    void *argv, u32 argc, struct lock_class_key *key,
183 		    const char *name, struct nvkm_vmm **pvmm)
184 {
185 	return gf100_vmm_new_(&gm200_vmm_16, &gm200_vmm_17, mmu, managed, addr,
186 			      size, argv, argc, key, name, pvmm);
187 }
188