1 /*
2 * Copyright 2018 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 <subdev/timer.h>
25
26 static void
tu102_vmm_flush(struct nvkm_vmm * vmm,int depth)27 tu102_vmm_flush(struct nvkm_vmm *vmm, int depth)
28 {
29 struct nvkm_device *device = vmm->mmu->subdev.device;
30 u32 type = (5 /* CACHE_LEVEL_UP_TO_PDE3 */ - depth) << 24;
31
32 type |= 0x00000001; /* PAGE_ALL */
33 if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR]))
34 type |= 0x00000004; /* HUB_ONLY */
35
36 mutex_lock(&vmm->mmu->mutex);
37
38 nvkm_wr32(device, 0xb830a0, vmm->pd->pt[0]->addr >> 8);
39 nvkm_wr32(device, 0xb830a4, 0x00000000);
40 nvkm_wr32(device, 0x100e68, 0x00000000);
41 nvkm_wr32(device, 0xb830b0, 0x80000000 | type);
42
43 nvkm_msec(device, 2000,
44 if (!(nvkm_rd32(device, 0xb830b0) & 0x80000000))
45 break;
46 );
47
48 mutex_unlock(&vmm->mmu->mutex);
49 }
50
51 static const struct nvkm_vmm_func
52 tu102_vmm = {
53 .join = gv100_vmm_join,
54 .part = gf100_vmm_part,
55 .aper = gf100_vmm_aper,
56 .valid = gp100_vmm_valid,
57 .flush = tu102_vmm_flush,
58 .mthd = gp100_vmm_mthd,
59 .page = {
60 { 47, &gp100_vmm_desc_16[4], NVKM_VMM_PAGE_Sxxx },
61 { 38, &gp100_vmm_desc_16[3], NVKM_VMM_PAGE_Sxxx },
62 { 29, &gp100_vmm_desc_16[2], NVKM_VMM_PAGE_Sxxx },
63 { 21, &gp100_vmm_desc_16[1], NVKM_VMM_PAGE_SVxC },
64 { 16, &gp100_vmm_desc_16[0], NVKM_VMM_PAGE_SVxC },
65 { 12, &gp100_vmm_desc_12[0], NVKM_VMM_PAGE_SVHx },
66 {}
67 }
68 };
69
70 int
tu102_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)71 tu102_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
72 void *argv, u32 argc, struct lock_class_key *key,
73 const char *name, struct nvkm_vmm **pvmm)
74 {
75 return gp100_vmm_new_(&tu102_vmm, mmu, managed, addr, size,
76 argv, argc, key, name, pvmm);
77 }
78