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