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