1 /* 2 * Copyright 2021 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 "priv.h" 23 24 #include <nvif/class.h> 25 26 static void 27 tu102_vfn_intr_reset(struct nvkm_intr *intr, int leaf, u32 mask) 28 { 29 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 30 31 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1000 + (leaf * 4), mask); 32 } 33 34 static void 35 tu102_vfn_intr_allow(struct nvkm_intr *intr, int leaf, u32 mask) 36 { 37 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 38 39 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1200 + (leaf * 4), mask); 40 } 41 42 static void 43 tu102_vfn_intr_block(struct nvkm_intr *intr, int leaf, u32 mask) 44 { 45 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 46 47 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1400 + (leaf * 4), mask); 48 } 49 50 static void 51 tu102_vfn_intr_rearm(struct nvkm_intr *intr) 52 { 53 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 54 55 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1608, 0x0000000f); 56 } 57 58 static void 59 tu102_vfn_intr_unarm(struct nvkm_intr *intr) 60 { 61 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 62 63 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1610, 0x0000000f); 64 } 65 66 static bool 67 tu102_vfn_intr_pending(struct nvkm_intr *intr) 68 { 69 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 70 struct nvkm_device *device = vfn->subdev.device; 71 u32 intr_top = nvkm_rd32(device, vfn->addr.priv + 0x1600); 72 int pending = 0, leaf; 73 74 for (leaf = 0; leaf < 8; leaf++) { 75 if (intr_top & BIT(leaf / 2)) { 76 intr->stat[leaf] = nvkm_rd32(device, vfn->addr.priv + 0x1000 + (leaf * 4)); 77 if (intr->stat[leaf]) 78 pending++; 79 } else { 80 intr->stat[leaf] = 0; 81 } 82 } 83 84 return pending != 0; 85 } 86 87 const struct nvkm_intr_func 88 tu102_vfn_intr = { 89 .pending = tu102_vfn_intr_pending, 90 .unarm = tu102_vfn_intr_unarm, 91 .rearm = tu102_vfn_intr_rearm, 92 .block = tu102_vfn_intr_block, 93 .allow = tu102_vfn_intr_allow, 94 .reset = tu102_vfn_intr_reset, 95 }; 96 97 static const struct nvkm_vfn_func 98 tu102_vfn = { 99 .intr = &tu102_vfn_intr, 100 .user = { 0x030000, 0x010000, { -1, -1, TURING_USERMODE_A } }, 101 }; 102 103 int 104 tu102_vfn_new(struct nvkm_device *device, 105 enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn) 106 { 107 return nvkm_vfn_new_(&tu102_vfn, device, type, inst, 0xb80000, pvfn); 108 } 109