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 nv44_mmu_init(struct nvkm_mmu *mmu)
33 {
34 struct nvkm_device *device = mmu->subdev.device;
35 struct nvkm_memory *pt = mmu->vmm->pd->pt[0]->memory;
36 u32 addr;
37
38 /* calculate vram address of this PRAMIN block, object must be
39 * allocated on 512KiB alignment, and not exceed a total size
40 * of 512KiB for this to work correctly
41 */
42 addr = nvkm_rd32(device, 0x10020c);
43 addr -= ((nvkm_memory_addr(pt) >> 19) + 1) << 19;
44
45 nvkm_wr32(device, 0x100850, 0x80000000);
46 nvkm_wr32(device, 0x100818, mmu->vmm->null);
47 nvkm_wr32(device, 0x100804, (nvkm_memory_size(pt) / 4) * 4096);
48 nvkm_wr32(device, 0x100850, 0x00008000);
49 nvkm_mask(device, 0x10008c, 0x00000200, 0x00000200);
50 nvkm_wr32(device, 0x100820, 0x00000000);
51 nvkm_wr32(device, 0x10082c, 0x00000001);
52 nvkm_wr32(device, 0x100800, addr | 0x00000010);
53 }
54
55 static const struct nvkm_mmu_func
56 nv44_mmu = {
57 .init = nv44_mmu_init,
58 .dma_bits = 39,
59 .mmu = {{ -1, -1, NVIF_CLASS_MMU_NV04}},
60 .mem = {{ -1, -1, NVIF_CLASS_MEM_NV04}, nv04_mem_new, nv04_mem_map },
61 .vmm = {{ -1, -1, NVIF_CLASS_VMM_NV04}, nv44_vmm_new, true },
62 };
63
64 int
65 nv44_mmu_new(struct nvkm_device *device, int index, struct nvkm_mmu **pmmu)
66 {
67 if (device->type == NVKM_DEVICE_AGP ||
68 !nvkm_boolopt(device->cfgopt, "NvPCIE", true))
69 return nv04_mmu_new(device, index, pmmu);
70
71 return nvkm_mmu_new_(&nv44_mmu, device, index, pmmu);
72 }