2 * Copyright 2010 Red Hat Inc.
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5 * copy of this software and associated documentation files (the "Software"),
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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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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
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24 #include <subdev/mmu.h>
25 #include <subdev/bar.h>
26 #include <subdev/fb.h>
27 #include <subdev/timer.h>
29 #include <core/engine.h>
30 #include <core/gpuobj.h>
32 struct nv50_mmu_priv {
37 nv50_vm_map_pgt(struct nvkm_gpuobj *pgd, u32 pde, struct nvkm_gpuobj *pgt[2])
39 u64 phys = 0xdeadcafe00000000ULL;
43 phys = 0x00000003 | pgt[0]->addr; /* present, 4KiB pages */
44 coverage = (pgt[0]->size >> 3) << 12;
47 phys = 0x00000001 | pgt[1]->addr; /* present */
48 coverage = (pgt[1]->size >> 3) << 16;
52 if (coverage <= 32 * 1024 * 1024)
54 else if (coverage <= 64 * 1024 * 1024)
56 else if (coverage <= 128 * 1024 * 1024)
60 nv_wo32(pgd, (pde * 8) + 0, lower_32_bits(phys));
61 nv_wo32(pgd, (pde * 8) + 4, upper_32_bits(phys));
65 vm_addr(struct nvkm_vma *vma, u64 phys, u32 memtype, u32 target)
67 phys |= 1; /* present */
68 phys |= (u64)memtype << 40;
70 if (vma->access & NV_MEM_ACCESS_SYS)
72 if (!(vma->access & NV_MEM_ACCESS_WO))
78 nv50_vm_map(struct nvkm_vma *vma, struct nvkm_gpuobj *pgt,
79 struct nvkm_mem *mem, u32 pte, u32 cnt, u64 phys, u64 delta)
81 u32 comp = (mem->memtype & 0x180) >> 7;
85 /* IGPs don't have real VRAM, re-target to stolen system memory */
87 if (nvkm_fb(vma->vm->mmu)->ram->stolen) {
88 phys += nvkm_fb(vma->vm->mmu)->ram->stolen;
92 phys = vm_addr(vma, phys, mem->memtype, target);
97 u32 offset_h = upper_32_bits(phys);
98 u32 offset_l = lower_32_bits(phys);
100 for (i = 7; i >= 0; i--) {
101 block = 1 << (i + 3);
102 if (cnt >= block && !(pte & (block - 1)))
105 offset_l |= (i << 7);
107 phys += block << (vma->node->type - 3);
110 u32 tag = mem->tag->offset + ((delta >> 16) * comp);
111 offset_h |= (tag << 17);
112 delta += block << (vma->node->type - 3);
116 nv_wo32(pgt, pte + 0, offset_l);
117 nv_wo32(pgt, pte + 4, offset_h);
125 nv50_vm_map_sg(struct nvkm_vma *vma, struct nvkm_gpuobj *pgt,
126 struct nvkm_mem *mem, u32 pte, u32 cnt, dma_addr_t *list)
128 u32 target = (vma->access & NV_MEM_ACCESS_NOSNOOP) ? 3 : 2;
131 u64 phys = vm_addr(vma, (u64)*list++, mem->memtype, target);
132 nv_wo32(pgt, pte + 0, lower_32_bits(phys));
133 nv_wo32(pgt, pte + 4, upper_32_bits(phys));
139 nv50_vm_unmap(struct nvkm_gpuobj *pgt, u32 pte, u32 cnt)
143 nv_wo32(pgt, pte + 0, 0x00000000);
144 nv_wo32(pgt, pte + 4, 0x00000000);
150 nv50_vm_flush(struct nvkm_vm *vm)
152 struct nv50_mmu_priv *priv = (void *)vm->mmu;
153 struct nvkm_bar *bar = nvkm_bar(priv);
154 struct nvkm_engine *engine;
159 mutex_lock(&nv_subdev(priv)->mutex);
160 for (i = 0; i < NVDEV_SUBDEV_NR; i++) {
161 if (!atomic_read(&vm->engref[i]))
164 /* unfortunate hw bug workaround... */
165 engine = nvkm_engine(priv, i);
166 if (engine && engine->tlb_flush) {
167 engine->tlb_flush(engine);
172 case NVDEV_ENGINE_GR : vme = 0x00; break;
173 case NVDEV_ENGINE_VP :
174 case NVDEV_ENGINE_MSPDEC: vme = 0x01; break;
175 case NVDEV_SUBDEV_BAR : vme = 0x06; break;
176 case NVDEV_ENGINE_MSPPP :
177 case NVDEV_ENGINE_MPEG : vme = 0x08; break;
178 case NVDEV_ENGINE_BSP :
179 case NVDEV_ENGINE_MSVLD : vme = 0x09; break;
180 case NVDEV_ENGINE_CIPHER:
181 case NVDEV_ENGINE_SEC : vme = 0x0a; break;
182 case NVDEV_ENGINE_CE0 : vme = 0x0d; break;
187 nv_wr32(priv, 0x100c80, (vme << 16) | 1);
188 if (!nv_wait(priv, 0x100c80, 0x00000001, 0x00000000))
189 nv_error(priv, "vm flush timeout: engine %d\n", vme);
191 mutex_unlock(&nv_subdev(priv)->mutex);
195 nv50_vm_create(struct nvkm_mmu *mmu, u64 offset, u64 length,
196 u64 mm_offset, struct nvkm_vm **pvm)
198 u32 block = (1 << (mmu->pgt_bits + 12));
202 return nvkm_vm_create(mmu, offset, length, mm_offset, block, pvm);
206 nv50_mmu_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
207 struct nvkm_oclass *oclass, void *data, u32 size,
208 struct nvkm_object **pobject)
210 struct nv50_mmu_priv *priv;
213 ret = nvkm_mmu_create(parent, engine, oclass, "VM", "vm", &priv);
214 *pobject = nv_object(priv);
218 priv->base.limit = 1ULL << 40;
219 priv->base.dma_bits = 40;
220 priv->base.pgt_bits = 29 - 12;
221 priv->base.spg_shift = 12;
222 priv->base.lpg_shift = 16;
223 priv->base.create = nv50_vm_create;
224 priv->base.map_pgt = nv50_vm_map_pgt;
225 priv->base.map = nv50_vm_map;
226 priv->base.map_sg = nv50_vm_map_sg;
227 priv->base.unmap = nv50_vm_unmap;
228 priv->base.flush = nv50_vm_flush;
234 .handle = NV_SUBDEV(MMU, 0x50),
235 .ofuncs = &(struct nvkm_ofuncs) {
236 .ctor = nv50_mmu_ctor,
237 .dtor = _nvkm_mmu_dtor,
238 .init = _nvkm_mmu_init,
239 .fini = _nvkm_mmu_fini,