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 <subdev/gsp.h> 25 26 #include <nvif/class.h> 27 28 static void 29 tu102_vfn_intr_reset(struct nvkm_intr *intr, int leaf, u32 mask) 30 { 31 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 32 33 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1000 + (leaf * 4), mask); 34 } 35 36 static void 37 tu102_vfn_intr_allow(struct nvkm_intr *intr, int leaf, u32 mask) 38 { 39 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 40 41 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1200 + (leaf * 4), mask); 42 } 43 44 static void 45 tu102_vfn_intr_block(struct nvkm_intr *intr, int leaf, u32 mask) 46 { 47 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 48 49 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1400 + (leaf * 4), mask); 50 } 51 52 static void 53 tu102_vfn_intr_rearm(struct nvkm_intr *intr) 54 { 55 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 56 57 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1608, 0x0000000f); 58 } 59 60 static void 61 tu102_vfn_intr_unarm(struct nvkm_intr *intr) 62 { 63 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 64 65 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1610, 0x0000000f); 66 } 67 68 static bool 69 tu102_vfn_intr_pending(struct nvkm_intr *intr) 70 { 71 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr); 72 struct nvkm_device *device = vfn->subdev.device; 73 u32 intr_top = nvkm_rd32(device, vfn->addr.priv + 0x1600); 74 int pending = 0, leaf; 75 76 for (leaf = 0; leaf < 8; leaf++) { 77 if (intr_top & BIT(leaf / 2)) { 78 intr->stat[leaf] = nvkm_rd32(device, vfn->addr.priv + 0x1000 + (leaf * 4)); 79 if (intr->stat[leaf]) 80 pending++; 81 } else { 82 intr->stat[leaf] = 0; 83 } 84 } 85 86 return pending != 0; 87 } 88 89 const struct nvkm_intr_func 90 tu102_vfn_intr = { 91 .pending = tu102_vfn_intr_pending, 92 .unarm = tu102_vfn_intr_unarm, 93 .rearm = tu102_vfn_intr_rearm, 94 .block = tu102_vfn_intr_block, 95 .allow = tu102_vfn_intr_allow, 96 .reset = tu102_vfn_intr_reset, 97 }; 98 99 static const struct nvkm_vfn_func 100 tu102_vfn = { 101 .intr = &tu102_vfn_intr, 102 .user = { 0x030000, 0x010000, { -1, -1, TURING_USERMODE_A } }, 103 }; 104 105 int 106 tu102_vfn_new(struct nvkm_device *device, 107 enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn) 108 { 109 if (nvkm_gsp_rm(device->gsp)) 110 return r535_vfn_new(&tu102_vfn, device, type, inst, 0xb80000, pvfn); 111 112 return nvkm_vfn_new_(&tu102_vfn, device, type, inst, 0xb80000, pvfn); 113 } 114