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 = depth << 24; /*XXX: not confirmed */ 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