1 /*
2  * Copyright 2012 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  * Authors: Ben Skeggs
23  */
24 #include "mem.h"
25 #include "vmm.h"
26 
27 #include <core/option.h>
28 
29 #include <nvif/class.h>
30 
31 static void
32 nv41_mmu_init(struct nvkm_mmu *mmu)
33 {
34 	struct nvkm_device *device = mmu->subdev.device;
35 	nvkm_wr32(device, 0x100800, 0x00000002 | mmu->vmm->pd->pt[0]->addr);
36 	nvkm_mask(device, 0x10008c, 0x00000100, 0x00000100);
37 	nvkm_wr32(device, 0x100820, 0x00000000);
38 }
39 
40 static const struct nvkm_mmu_func
41 nv41_mmu = {
42 	.init = nv41_mmu_init,
43 	.dma_bits = 39,
44 	.mmu = {{ -1, -1, NVIF_CLASS_MMU_NV04}},
45 	.mem = {{ -1, -1, NVIF_CLASS_MEM_NV04}, nv04_mem_new, nv04_mem_map },
46 	.vmm = {{ -1, -1, NVIF_CLASS_VMM_NV04}, nv41_vmm_new, true },
47 };
48 
49 int
50 nv41_mmu_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
51 	     struct nvkm_mmu **pmmu)
52 {
53 	if (device->type == NVKM_DEVICE_AGP ||
54 	    !nvkm_boolopt(device->cfgopt, "NvPCIE", true))
55 		return nv04_mmu_new(device, type, inst, pmmu);
56 
57 	return nvkm_mmu_new_(&nv41_mmu, device, type, inst, pmmu);
58 }
59