2 * Copyright 2010 Red Hat Inc.
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:
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
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.
25 #include <core/device.h>
26 #include <core/gpuobj.h>
28 #include <subdev/timer.h>
29 #include <subdev/fb.h>
30 #include <subdev/vm.h>
32 struct nv50_vmmgr_priv {
33 struct nouveau_vmmgr base;
38 nv50_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 pde,
39 struct nouveau_gpuobj *pgt[2])
41 u64 phys = 0xdeadcafe00000000ULL;
45 phys = 0x00000003 | pgt[0]->addr; /* present, 4KiB pages */
46 coverage = (pgt[0]->size >> 3) << 12;
49 phys = 0x00000001 | pgt[1]->addr; /* present */
50 coverage = (pgt[1]->size >> 3) << 16;
54 if (coverage <= 32 * 1024 * 1024)
56 else if (coverage <= 64 * 1024 * 1024)
58 else if (coverage <= 128 * 1024 * 1024)
62 nv_wo32(pgd, (pde * 8) + 0, lower_32_bits(phys));
63 nv_wo32(pgd, (pde * 8) + 4, upper_32_bits(phys));
67 vm_addr(struct nouveau_vma *vma, u64 phys, u32 memtype, u32 target)
69 phys |= 1; /* present */
70 phys |= (u64)memtype << 40;
72 if (vma->access & NV_MEM_ACCESS_SYS)
74 if (!(vma->access & NV_MEM_ACCESS_WO))
80 nv50_vm_map(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt,
81 struct nouveau_mem *mem, u32 pte, u32 cnt, u64 phys, u64 delta)
83 u32 comp = (mem->memtype & 0x180) >> 7;
87 /* IGPs don't have real VRAM, re-target to stolen system memory */
89 if (nouveau_fb(vma->vm->vmm)->ram->stolen) {
90 phys += nouveau_fb(vma->vm->vmm)->ram->stolen;
94 phys = vm_addr(vma, phys, mem->memtype, target);
99 u32 offset_h = upper_32_bits(phys);
100 u32 offset_l = lower_32_bits(phys);
102 for (i = 7; i >= 0; i--) {
103 block = 1 << (i + 3);
104 if (cnt >= block && !(pte & (block - 1)))
107 offset_l |= (i << 7);
109 phys += block << (vma->node->type - 3);
112 u32 tag = mem->tag->offset + ((delta >> 16) * comp);
113 offset_h |= (tag << 17);
114 delta += block << (vma->node->type - 3);
118 nv_wo32(pgt, pte + 0, offset_l);
119 nv_wo32(pgt, pte + 4, offset_h);
127 nv50_vm_map_sg(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt,
128 struct nouveau_mem *mem, u32 pte, u32 cnt, dma_addr_t *list)
130 u32 target = (vma->access & NV_MEM_ACCESS_NOSNOOP) ? 3 : 2;
133 u64 phys = vm_addr(vma, (u64)*list++, mem->memtype, target);
134 nv_wo32(pgt, pte + 0, lower_32_bits(phys));
135 nv_wo32(pgt, pte + 4, upper_32_bits(phys));
141 nv50_vm_unmap(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt)
145 nv_wo32(pgt, pte + 0, 0x00000000);
146 nv_wo32(pgt, pte + 4, 0x00000000);
152 nv50_vm_flush(struct nouveau_vm *vm)
154 struct nouveau_engine *engine;
157 for (i = 0; i < NVDEV_SUBDEV_NR; i++) {
158 if (atomic_read(&vm->engref[i])) {
159 engine = nouveau_engine(vm->vmm, i);
160 if (engine && engine->tlb_flush)
161 engine->tlb_flush(engine);
167 nv50_vm_flush_engine(struct nouveau_subdev *subdev, int engine)
169 struct nv50_vmmgr_priv *priv = (void *)nouveau_vmmgr(subdev);
172 spin_lock_irqsave(&priv->lock, flags);
173 nv_wr32(subdev, 0x100c80, (engine << 16) | 1);
174 if (!nv_wait(subdev, 0x100c80, 0x00000001, 0x00000000))
175 nv_error(subdev, "vm flush timeout: engine %d\n", engine);
176 spin_unlock_irqrestore(&priv->lock, flags);
180 nv50_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length,
181 u64 mm_offset, struct nouveau_vm **pvm)
183 u32 block = (1 << (vmm->pgt_bits + 12));
187 return nouveau_vm_create(vmm, offset, length, mm_offset, block, pvm);
191 nv50_vmmgr_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
192 struct nouveau_oclass *oclass, void *data, u32 size,
193 struct nouveau_object **pobject)
195 struct nv50_vmmgr_priv *priv;
198 ret = nouveau_vmmgr_create(parent, engine, oclass, "VM", "vm", &priv);
199 *pobject = nv_object(priv);
203 priv->base.limit = 1ULL << 40;
204 priv->base.dma_bits = 40;
205 priv->base.pgt_bits = 29 - 12;
206 priv->base.spg_shift = 12;
207 priv->base.lpg_shift = 16;
208 priv->base.create = nv50_vm_create;
209 priv->base.map_pgt = nv50_vm_map_pgt;
210 priv->base.map = nv50_vm_map;
211 priv->base.map_sg = nv50_vm_map_sg;
212 priv->base.unmap = nv50_vm_unmap;
213 priv->base.flush = nv50_vm_flush;
214 spin_lock_init(&priv->lock);
218 struct nouveau_oclass
219 nv50_vmmgr_oclass = {
220 .handle = NV_SUBDEV(VM, 0x50),
221 .ofuncs = &(struct nouveau_ofuncs) {
222 .ctor = nv50_vmmgr_ctor,
223 .dtor = _nouveau_vmmgr_dtor,
224 .init = _nouveau_vmmgr_init,
225 .fini = _nouveau_vmmgr_fini,