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
27 tu102_vmm_flush(struct nvkm_vmm *vmm, int depth)
28 {
29 	struct nvkm_subdev *subdev = &vmm->mmu->subdev;
30 	struct nvkm_device *device = subdev->device;
31 	u32 type = (5 /* CACHE_LEVEL_UP_TO_PDE3 */ - depth) << 24;
32 
33 	type |= 0x00000001; /* PAGE_ALL */
34 	if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR]))
35 		type |= 0x00000004; /* HUB_ONLY */
36 
37 	mutex_lock(&subdev->mutex);
38 
39 	nvkm_wr32(device, 0xb830a0, vmm->pd->pt[0]->addr >> 8);
40 	nvkm_wr32(device, 0xb830a4, 0x00000000);
41 	nvkm_wr32(device, 0x100e68, 0x00000000);
42 	nvkm_wr32(device, 0xb830b0, 0x80000000 | type);
43 
44 	nvkm_msec(device, 2000,
45 		if (!(nvkm_rd32(device, 0xb830b0) & 0x80000000))
46 			break;
47 	);
48 
49 	mutex_unlock(&subdev->mutex);
50 }
51 
52 static const struct nvkm_vmm_func
53 tu102_vmm = {
54 	.join = gv100_vmm_join,
55 	.part = gf100_vmm_part,
56 	.aper = gf100_vmm_aper,
57 	.valid = gp100_vmm_valid,
58 	.flush = tu102_vmm_flush,
59 	.mthd = gp100_vmm_mthd,
60 	.page = {
61 		{ 47, &gp100_vmm_desc_16[4], NVKM_VMM_PAGE_Sxxx },
62 		{ 38, &gp100_vmm_desc_16[3], NVKM_VMM_PAGE_Sxxx },
63 		{ 29, &gp100_vmm_desc_16[2], NVKM_VMM_PAGE_Sxxx },
64 		{ 21, &gp100_vmm_desc_16[1], NVKM_VMM_PAGE_SVxC },
65 		{ 16, &gp100_vmm_desc_16[0], NVKM_VMM_PAGE_SVxC },
66 		{ 12, &gp100_vmm_desc_12[0], NVKM_VMM_PAGE_SVHx },
67 		{}
68 	}
69 };
70 
71 int
72 tu102_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
73 	      void *argv, u32 argc, struct lock_class_key *key,
74 	      const char *name, struct nvkm_vmm **pvmm)
75 {
76 	return gp100_vmm_new_(&tu102_vmm, mmu, managed, addr, size,
77 			      argv, argc, key, name, pvmm);
78 }
79