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