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/mmu.h> 26 #include <engine/fifo.h> 27 28 #include <nvif/class.h> 29 30 static void 31 gv100_fault_buffer_process(struct nvkm_fault_buffer *buffer) 32 { 33 struct nvkm_device *device = buffer->fault->subdev.device; 34 struct nvkm_memory *mem = buffer->mem; 35 u32 get = nvkm_rd32(device, buffer->get); 36 u32 put = nvkm_rd32(device, buffer->put); 37 if (put == get) 38 return; 39 40 nvkm_kmap(mem); 41 while (get != put) { 42 const u32 base = get * buffer->fault->func->buffer.entry_size; 43 const u32 instlo = nvkm_ro32(mem, base + 0x00); 44 const u32 insthi = nvkm_ro32(mem, base + 0x04); 45 const u32 addrlo = nvkm_ro32(mem, base + 0x08); 46 const u32 addrhi = nvkm_ro32(mem, base + 0x0c); 47 const u32 timelo = nvkm_ro32(mem, base + 0x10); 48 const u32 timehi = nvkm_ro32(mem, base + 0x14); 49 const u32 info0 = nvkm_ro32(mem, base + 0x18); 50 const u32 info1 = nvkm_ro32(mem, base + 0x1c); 51 struct nvkm_fault_data info; 52 53 if (++get == buffer->entries) 54 get = 0; 55 nvkm_wr32(device, buffer->get, get); 56 57 info.addr = ((u64)addrhi << 32) | addrlo; 58 info.inst = ((u64)insthi << 32) | instlo; 59 info.time = ((u64)timehi << 32) | timelo; 60 info.engine = (info0 & 0x000000ff); 61 info.valid = (info1 & 0x80000000) >> 31; 62 info.gpc = (info1 & 0x1f000000) >> 24; 63 info.hub = (info1 & 0x00100000) >> 20; 64 info.access = (info1 & 0x000f0000) >> 16; 65 info.client = (info1 & 0x00007f00) >> 8; 66 info.reason = (info1 & 0x0000001f); 67 68 nvkm_fifo_fault(device->fifo, &info); 69 } 70 nvkm_done(mem); 71 } 72 73 static void 74 gv100_fault_buffer_intr(struct nvkm_fault_buffer *buffer, bool enable) 75 { 76 struct nvkm_device *device = buffer->fault->subdev.device; 77 const u32 intr = buffer->id ? 0x08000000 : 0x20000000; 78 if (enable) 79 nvkm_mask(device, 0x100a2c, intr, intr); 80 else 81 nvkm_mask(device, 0x100a34, intr, intr); 82 } 83 84 static void 85 gv100_fault_buffer_fini(struct nvkm_fault_buffer *buffer) 86 { 87 struct nvkm_device *device = buffer->fault->subdev.device; 88 const u32 foff = buffer->id * 0x14; 89 nvkm_mask(device, 0x100e34 + foff, 0x80000000, 0x00000000); 90 } 91 92 static void 93 gv100_fault_buffer_init(struct nvkm_fault_buffer *buffer) 94 { 95 struct nvkm_device *device = buffer->fault->subdev.device; 96 const u32 foff = buffer->id * 0x14; 97 98 nvkm_mask(device, 0x100e34 + foff, 0xc0000000, 0x40000000); 99 nvkm_wr32(device, 0x100e28 + foff, upper_32_bits(buffer->addr)); 100 nvkm_wr32(device, 0x100e24 + foff, lower_32_bits(buffer->addr)); 101 nvkm_mask(device, 0x100e34 + foff, 0x80000000, 0x80000000); 102 } 103 104 static void 105 gv100_fault_buffer_info(struct nvkm_fault_buffer *buffer) 106 { 107 struct nvkm_device *device = buffer->fault->subdev.device; 108 const u32 foff = buffer->id * 0x14; 109 110 nvkm_mask(device, 0x100e34 + foff, 0x40000000, 0x40000000); 111 112 buffer->entries = nvkm_rd32(device, 0x100e34 + foff) & 0x000fffff; 113 buffer->get = 0x100e2c + foff; 114 buffer->put = 0x100e30 + foff; 115 } 116 117 static int 118 gv100_fault_ntfy_nrpfb(struct nvkm_notify *notify) 119 { 120 struct nvkm_fault *fault = container_of(notify, typeof(*fault), nrpfb); 121 gv100_fault_buffer_process(fault->buffer[0]); 122 return NVKM_NOTIFY_KEEP; 123 } 124 125 static void 126 gv100_fault_intr_fault(struct nvkm_fault *fault) 127 { 128 struct nvkm_subdev *subdev = &fault->subdev; 129 struct nvkm_device *device = subdev->device; 130 struct nvkm_fault_data info; 131 const u32 addrlo = nvkm_rd32(device, 0x100e4c); 132 const u32 addrhi = nvkm_rd32(device, 0x100e50); 133 const u32 info0 = nvkm_rd32(device, 0x100e54); 134 const u32 insthi = nvkm_rd32(device, 0x100e58); 135 const u32 info1 = nvkm_rd32(device, 0x100e5c); 136 137 info.addr = ((u64)addrhi << 32) | addrlo; 138 info.inst = ((u64)insthi << 32) | (info0 & 0xfffff000); 139 info.time = 0; 140 info.engine = (info0 & 0x000000ff); 141 info.valid = (info1 & 0x80000000) >> 31; 142 info.gpc = (info1 & 0x1f000000) >> 24; 143 info.hub = (info1 & 0x00100000) >> 20; 144 info.access = (info1 & 0x000f0000) >> 16; 145 info.client = (info1 & 0x00007f00) >> 8; 146 info.reason = (info1 & 0x0000001f); 147 148 nvkm_fifo_fault(device->fifo, &info); 149 } 150 151 static void 152 gv100_fault_intr(struct nvkm_fault *fault) 153 { 154 struct nvkm_subdev *subdev = &fault->subdev; 155 struct nvkm_device *device = subdev->device; 156 u32 stat = nvkm_rd32(device, 0x100a20); 157 158 if (stat & 0x80000000) { 159 gv100_fault_intr_fault(fault); 160 nvkm_wr32(device, 0x100e60, 0x80000000); 161 stat &= ~0x80000000; 162 } 163 164 if (stat & 0x20000000) { 165 if (fault->buffer[0]) { 166 nvkm_event_send(&fault->event, 1, 0, NULL, 0); 167 stat &= ~0x20000000; 168 } 169 } 170 171 if (stat & 0x08000000) { 172 if (fault->buffer[1]) { 173 nvkm_event_send(&fault->event, 1, 1, NULL, 0); 174 stat &= ~0x08000000; 175 } 176 } 177 178 if (stat) { 179 nvkm_debug(subdev, "intr %08x\n", stat); 180 } 181 } 182 183 static void 184 gv100_fault_fini(struct nvkm_fault *fault) 185 { 186 nvkm_notify_put(&fault->nrpfb); 187 if (fault->buffer[0]) 188 fault->func->buffer.fini(fault->buffer[0]); 189 nvkm_mask(fault->subdev.device, 0x100a34, 0x80000000, 0x80000000); 190 } 191 192 static void 193 gv100_fault_init(struct nvkm_fault *fault) 194 { 195 nvkm_mask(fault->subdev.device, 0x100a2c, 0x80000000, 0x80000000); 196 fault->func->buffer.init(fault->buffer[0]); 197 nvkm_notify_get(&fault->nrpfb); 198 } 199 200 int 201 gv100_fault_oneinit(struct nvkm_fault *fault) 202 { 203 return nvkm_notify_init(&fault->buffer[0]->object, &fault->event, 204 gv100_fault_ntfy_nrpfb, true, NULL, 0, 0, 205 &fault->nrpfb); 206 } 207 208 static const struct nvkm_fault_func 209 gv100_fault = { 210 .oneinit = gv100_fault_oneinit, 211 .init = gv100_fault_init, 212 .fini = gv100_fault_fini, 213 .intr = gv100_fault_intr, 214 .buffer.nr = 2, 215 .buffer.entry_size = 32, 216 .buffer.info = gv100_fault_buffer_info, 217 .buffer.pin = gp100_fault_buffer_pin, 218 .buffer.init = gv100_fault_buffer_init, 219 .buffer.fini = gv100_fault_buffer_fini, 220 .buffer.intr = gv100_fault_buffer_intr, 221 /*TODO: Figure out how to expose non-replayable fault buffer, which, 222 * for some reason, is where recoverable CE faults appear... 223 * 224 * It's a bit tricky, as both NVKM and SVM will need access to 225 * the non-replayable fault buffer. 226 */ 227 .user = { { 0, 0, VOLTA_FAULT_BUFFER_A }, 1 }, 228 }; 229 230 int 231 gv100_fault_new(struct nvkm_device *device, int index, 232 struct nvkm_fault **pfault) 233 { 234 return nvkm_fault_new_(&gv100_fault, device, index, pfault); 235 } 236