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 "priv.h" 23 24 #include <core/memory.h> 25 #include <subdev/gsp.h> 26 #include <subdev/mc.h> 27 #include <subdev/mmu.h> 28 #include <subdev/vfn.h> 29 #include <engine/fifo.h> 30 31 #include <nvif/class.h> 32 33 static irqreturn_t 34 tu102_fault_buffer_notify(struct nvkm_inth *inth) 35 { 36 struct nvkm_fault_buffer *buffer = container_of(inth, typeof(*buffer), inth); 37 38 nvkm_event_ntfy(&buffer->fault->event, buffer->id, NVKM_FAULT_BUFFER_EVENT_PENDING); 39 return IRQ_HANDLED; 40 } 41 42 static void 43 tu102_fault_buffer_intr(struct nvkm_fault_buffer *buffer, bool enable) 44 { 45 if (enable) 46 nvkm_inth_allow(&buffer->inth); 47 else 48 nvkm_inth_block(&buffer->inth); 49 } 50 51 static void 52 tu102_fault_buffer_fini(struct nvkm_fault_buffer *buffer) 53 { 54 struct nvkm_device *device = buffer->fault->subdev.device; 55 const u32 foff = buffer->id * 0x20; 56 57 nvkm_mask(device, 0xb83010 + foff, 0x80000000, 0x00000000); 58 } 59 60 static void 61 tu102_fault_buffer_init(struct nvkm_fault_buffer *buffer) 62 { 63 struct nvkm_device *device = buffer->fault->subdev.device; 64 const u32 foff = buffer->id * 0x20; 65 66 nvkm_mask(device, 0xb83010 + foff, 0xc0000000, 0x40000000); 67 nvkm_wr32(device, 0xb83004 + foff, upper_32_bits(buffer->addr)); 68 nvkm_wr32(device, 0xb83000 + foff, lower_32_bits(buffer->addr)); 69 nvkm_mask(device, 0xb83010 + foff, 0x80000000, 0x80000000); 70 } 71 72 static void 73 tu102_fault_buffer_info(struct nvkm_fault_buffer *buffer) 74 { 75 struct nvkm_device *device = buffer->fault->subdev.device; 76 const u32 foff = buffer->id * 0x20; 77 78 nvkm_mask(device, 0xb83010 + foff, 0x40000000, 0x40000000); 79 80 buffer->entries = nvkm_rd32(device, 0xb83010 + foff) & 0x000fffff; 81 buffer->get = 0xb83008 + foff; 82 buffer->put = 0xb8300c + foff; 83 } 84 85 static irqreturn_t 86 tu102_fault_info_fault(struct nvkm_inth *inth) 87 { 88 struct nvkm_fault *fault = container_of(inth, typeof(*fault), info_fault); 89 struct nvkm_subdev *subdev = &fault->subdev; 90 struct nvkm_device *device = subdev->device; 91 struct nvkm_fault_data info; 92 const u32 addrlo = nvkm_rd32(device, 0xb83080); 93 const u32 addrhi = nvkm_rd32(device, 0xb83084); 94 const u32 info0 = nvkm_rd32(device, 0xb83088); 95 const u32 insthi = nvkm_rd32(device, 0xb8308c); 96 const u32 info1 = nvkm_rd32(device, 0xb83090); 97 98 info.addr = ((u64)addrhi << 32) | addrlo; 99 info.inst = ((u64)insthi << 32) | (info0 & 0xfffff000); 100 info.time = 0; 101 info.engine = (info0 & 0x000000ff); 102 info.valid = (info1 & 0x80000000) >> 31; 103 info.gpc = (info1 & 0x1f000000) >> 24; 104 info.hub = (info1 & 0x00100000) >> 20; 105 info.access = (info1 & 0x000f0000) >> 16; 106 info.client = (info1 & 0x00007f00) >> 8; 107 info.reason = (info1 & 0x0000001f); 108 109 nvkm_fifo_fault(device->fifo, &info); 110 111 nvkm_wr32(device, 0xb83094, 0x80000000); 112 return IRQ_HANDLED; 113 } 114 115 static void 116 tu102_fault_fini(struct nvkm_fault *fault) 117 { 118 nvkm_event_ntfy_block(&fault->nrpfb); 119 flush_work(&fault->nrpfb_work); 120 121 if (fault->buffer[0]) 122 fault->func->buffer.fini(fault->buffer[0]); 123 124 nvkm_inth_block(&fault->info_fault); 125 } 126 127 static void 128 tu102_fault_init(struct nvkm_fault *fault) 129 { 130 nvkm_inth_allow(&fault->info_fault); 131 132 fault->func->buffer.init(fault->buffer[0]); 133 nvkm_event_ntfy_allow(&fault->nrpfb); 134 } 135 136 static int 137 tu102_fault_oneinit(struct nvkm_fault *fault) 138 { 139 struct nvkm_device *device = fault->subdev.device; 140 struct nvkm_intr *intr = &device->vfn->intr; 141 int ret, i; 142 143 ret = nvkm_inth_add(intr, nvkm_rd32(device, 0x100ee0) & 0x0000ffff, 144 NVKM_INTR_PRIO_NORMAL, &fault->subdev, tu102_fault_info_fault, 145 &fault->info_fault); 146 if (ret) 147 return ret; 148 149 for (i = 0; i < fault->buffer_nr; i++) { 150 ret = nvkm_inth_add(intr, nvkm_rd32(device, 0x100ee4 + (i * 4)) >> 16, 151 NVKM_INTR_PRIO_NORMAL, &fault->subdev, 152 tu102_fault_buffer_notify, &fault->buffer[i]->inth); 153 if (ret) 154 return ret; 155 } 156 157 return gv100_fault_oneinit(fault); 158 } 159 160 static const struct nvkm_fault_func 161 tu102_fault = { 162 .oneinit = tu102_fault_oneinit, 163 .init = tu102_fault_init, 164 .fini = tu102_fault_fini, 165 .buffer.nr = 2, 166 .buffer.entry_size = 32, 167 .buffer.info = tu102_fault_buffer_info, 168 .buffer.pin = gp100_fault_buffer_pin, 169 .buffer.init = tu102_fault_buffer_init, 170 .buffer.fini = tu102_fault_buffer_fini, 171 .buffer.intr = tu102_fault_buffer_intr, 172 .user = { { 0, 0, VOLTA_FAULT_BUFFER_A }, 1 }, 173 }; 174 175 int 176 tu102_fault_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, 177 struct nvkm_fault **pfault) 178 { 179 int ret; 180 181 if (nvkm_gsp_rm(device->gsp)) 182 return -ENODEV; 183 184 ret = nvkm_fault_new_(&tu102_fault, device, type, inst, pfault); 185 if (ret) 186 return ret; 187 188 INIT_WORK(&(*pfault)->nrpfb_work, gv100_fault_buffer_process); 189 return 0; 190 } 191