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 "nouveau_mem.h"
23 #include "nouveau_drv.h"
24 #include "nouveau_bo.h"
25 
26 #include <drm/ttm/ttm_bo_driver.h>
27 
28 #include <nvif/class.h>
29 #include <nvif/if000a.h>
30 #include <nvif/if500b.h>
31 #include <nvif/if500d.h>
32 #include <nvif/if900b.h>
33 #include <nvif/if900d.h>
34 
35 int
36 nouveau_mem_map(struct nouveau_mem *mem,
37 		struct nvif_vmm *vmm, struct nvif_vma *vma)
38 {
39 	union {
40 		struct nv50_vmm_map_v0 nv50;
41 		struct gf100_vmm_map_v0 gf100;
42 	} args;
43 	u32 argc = 0;
44 
45 	switch (vmm->object.oclass) {
46 	case NVIF_CLASS_VMM_NV04:
47 		break;
48 	case NVIF_CLASS_VMM_NV50:
49 		args.nv50.version = 0;
50 		args.nv50.ro = 0;
51 		args.nv50.priv = 0;
52 		args.nv50.kind = mem->kind;
53 		args.nv50.comp = mem->comp;
54 		argc = sizeof(args.nv50);
55 		break;
56 	case NVIF_CLASS_VMM_GF100:
57 	case NVIF_CLASS_VMM_GM200:
58 	case NVIF_CLASS_VMM_GP100:
59 		args.gf100.version = 0;
60 		if (mem->mem.type & NVIF_MEM_VRAM)
61 			args.gf100.vol = 0;
62 		else
63 			args.gf100.vol = 1;
64 		args.gf100.ro = 0;
65 		args.gf100.priv = 0;
66 		args.gf100.kind = mem->kind;
67 		argc = sizeof(args.gf100);
68 		break;
69 	default:
70 		WARN_ON(1);
71 		return -ENOSYS;
72 	}
73 
74 	return nvif_vmm_map(vmm, vma->addr, mem->mem.size, &args, argc, &mem->mem, 0);
75 }
76 
77 void
78 nouveau_mem_fini(struct nouveau_mem *mem)
79 {
80 	nvif_vmm_put(&mem->cli->drm->client.vmm.vmm, &mem->vma[1]);
81 	nvif_vmm_put(&mem->cli->drm->client.vmm.vmm, &mem->vma[0]);
82 	mutex_lock(&mem->cli->drm->master.lock);
83 	nvif_mem_dtor(&mem->mem);
84 	mutex_unlock(&mem->cli->drm->master.lock);
85 }
86 
87 int
88 nouveau_mem_host(struct ttm_resource *reg, struct ttm_tt *tt)
89 {
90 	struct nouveau_mem *mem = nouveau_mem(reg);
91 	struct nouveau_cli *cli = mem->cli;
92 	struct nouveau_drm *drm = cli->drm;
93 	struct nvif_mmu *mmu = &cli->mmu;
94 	struct nvif_mem_ram_v0 args = {};
95 	u8 type;
96 	int ret;
97 
98 	if (!nouveau_drm_use_coherent_gpu_mapping(drm))
99 		type = drm->ttm.type_ncoh[!!mem->kind];
100 	else
101 		type = drm->ttm.type_host[0];
102 
103 	if (mem->kind && !(mmu->type[type].type & NVIF_MEM_KIND))
104 		mem->comp = mem->kind = 0;
105 	if (mem->comp && !(mmu->type[type].type & NVIF_MEM_COMP)) {
106 		if (mmu->object.oclass >= NVIF_CLASS_MMU_GF100)
107 			mem->kind = mmu->kind[mem->kind];
108 		mem->comp = 0;
109 	}
110 
111 	if (tt->sg)
112 		args.sgl = tt->sg->sgl;
113 	else
114 		args.dma = tt->dma_address;
115 
116 	mutex_lock(&drm->master.lock);
117 	ret = nvif_mem_ctor_type(mmu, "ttmHostMem", cli->mem->oclass, type, PAGE_SHIFT,
118 				 reg->num_pages << PAGE_SHIFT,
119 				 &args, sizeof(args), &mem->mem);
120 	mutex_unlock(&drm->master.lock);
121 	return ret;
122 }
123 
124 int
125 nouveau_mem_vram(struct ttm_resource *reg, bool contig, u8 page)
126 {
127 	struct nouveau_mem *mem = nouveau_mem(reg);
128 	struct nouveau_cli *cli = mem->cli;
129 	struct nouveau_drm *drm = cli->drm;
130 	struct nvif_mmu *mmu = &cli->mmu;
131 	u64 size = ALIGN(reg->num_pages << PAGE_SHIFT, 1 << page);
132 	int ret;
133 
134 	mutex_lock(&drm->master.lock);
135 	switch (cli->mem->oclass) {
136 	case NVIF_CLASS_MEM_GF100:
137 		ret = nvif_mem_ctor_type(mmu, "ttmVram", cli->mem->oclass,
138 					 drm->ttm.type_vram, page, size,
139 					 &(struct gf100_mem_v0) {
140 						.contig = contig,
141 					 }, sizeof(struct gf100_mem_v0),
142 					 &mem->mem);
143 		break;
144 	case NVIF_CLASS_MEM_NV50:
145 		ret = nvif_mem_ctor_type(mmu, "ttmVram", cli->mem->oclass,
146 					 drm->ttm.type_vram, page, size,
147 					 &(struct nv50_mem_v0) {
148 						.bankswz = mmu->kind[mem->kind] == 2,
149 						.contig = contig,
150 					 }, sizeof(struct nv50_mem_v0),
151 					 &mem->mem);
152 		break;
153 	default:
154 		ret = -ENOSYS;
155 		WARN_ON(1);
156 		break;
157 	}
158 	mutex_unlock(&drm->master.lock);
159 
160 	reg->start = mem->mem.addr >> PAGE_SHIFT;
161 	return ret;
162 }
163 
164 void
165 nouveau_mem_del(struct ttm_resource_manager *man, struct ttm_resource *reg)
166 {
167 	struct nouveau_mem *mem = nouveau_mem(reg);
168 
169 	nouveau_mem_fini(mem);
170 	ttm_resource_fini(man, reg);
171 	kfree(mem);
172 }
173 
174 int
175 nouveau_mem_new(struct nouveau_cli *cli, u8 kind, u8 comp,
176 		struct ttm_resource **res)
177 {
178 	struct nouveau_mem *mem;
179 
180 	if (!(mem = kzalloc(sizeof(*mem), GFP_KERNEL)))
181 		return -ENOMEM;
182 
183 	mem->cli = cli;
184 	mem->kind = kind;
185 	mem->comp = comp;
186 
187 	*res = &mem->base;
188 	return 0;
189 }
190 
191 bool
192 nouveau_mem_intersects(struct ttm_resource *res,
193 		       const struct ttm_place *place,
194 		       size_t size)
195 {
196 	u32 num_pages = PFN_UP(size);
197 
198 	/* Don't evict BOs outside of the requested placement range */
199 	if (place->fpfn >= (res->start + num_pages) ||
200 	    (place->lpfn && place->lpfn <= res->start))
201 		return false;
202 
203 	return true;
204 }
205 
206 bool
207 nouveau_mem_compatible(struct ttm_resource *res,
208 		       const struct ttm_place *place,
209 		       size_t size)
210 {
211 	u32 num_pages = PFN_UP(size);
212 
213 	if (res->start < place->fpfn ||
214 	    (place->lpfn && (res->start + num_pages) > place->lpfn))
215 		return false;
216 
217 	return true;
218 }
219