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 tu102_fault_buffer_intr(struct nvkm_fault_buffer *buffer, bool enable) 32 { 33 /*XXX: Earlier versions of RM touched the old regs on Turing, 34 * which don't appear to actually work anymore, but newer 35 * versions of RM don't appear to touch anything at all.. 36 */ 37 } 38 39 static void 40 tu102_fault_buffer_fini(struct nvkm_fault_buffer *buffer) 41 { 42 struct nvkm_device *device = buffer->fault->subdev.device; 43 const u32 foff = buffer->id * 0x20; 44 nvkm_mask(device, 0xb83010 + foff, 0x80000000, 0x00000000); 45 } 46 47 static void 48 tu102_fault_buffer_init(struct nvkm_fault_buffer *buffer) 49 { 50 struct nvkm_device *device = buffer->fault->subdev.device; 51 const u32 foff = buffer->id * 0x20; 52 53 nvkm_mask(device, 0xb83010 + foff, 0xc0000000, 0x40000000); 54 nvkm_wr32(device, 0xb83004 + foff, upper_32_bits(buffer->addr)); 55 nvkm_wr32(device, 0xb83000 + foff, lower_32_bits(buffer->addr)); 56 nvkm_mask(device, 0xb83010 + foff, 0x80000000, 0x80000000); 57 } 58 59 static void 60 tu102_fault_buffer_info(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, 0x40000000, 0x40000000); 66 67 buffer->entries = nvkm_rd32(device, 0xb83010 + foff) & 0x000fffff; 68 buffer->get = 0xb83008 + foff; 69 buffer->put = 0xb8300c + foff; 70 } 71 72 static void 73 tu102_fault_intr_fault(struct nvkm_fault *fault) 74 { 75 struct nvkm_subdev *subdev = &fault->subdev; 76 struct nvkm_device *device = subdev->device; 77 struct nvkm_fault_data info; 78 const u32 addrlo = nvkm_rd32(device, 0xb83080); 79 const u32 addrhi = nvkm_rd32(device, 0xb83084); 80 const u32 info0 = nvkm_rd32(device, 0xb83088); 81 const u32 insthi = nvkm_rd32(device, 0xb8308c); 82 const u32 info1 = nvkm_rd32(device, 0xb83090); 83 84 info.addr = ((u64)addrhi << 32) | addrlo; 85 info.inst = ((u64)insthi << 32) | (info0 & 0xfffff000); 86 info.time = 0; 87 info.engine = (info0 & 0x000000ff); 88 info.valid = (info1 & 0x80000000) >> 31; 89 info.gpc = (info1 & 0x1f000000) >> 24; 90 info.hub = (info1 & 0x00100000) >> 20; 91 info.access = (info1 & 0x000f0000) >> 16; 92 info.client = (info1 & 0x00007f00) >> 8; 93 info.reason = (info1 & 0x0000001f); 94 95 nvkm_fifo_fault(device->fifo, &info); 96 } 97 98 static void 99 tu102_fault_intr(struct nvkm_fault *fault) 100 { 101 struct nvkm_subdev *subdev = &fault->subdev; 102 struct nvkm_device *device = subdev->device; 103 u32 stat = nvkm_rd32(device, 0xb83094); 104 105 if (stat & 0x80000000) { 106 tu102_fault_intr_fault(fault); 107 nvkm_wr32(device, 0xb83094, 0x80000000); 108 stat &= ~0x80000000; 109 } 110 111 if (stat & 0x00000200) { 112 if (fault->buffer[0]) { 113 nvkm_event_send(&fault->event, 1, 0, NULL, 0); 114 stat &= ~0x00000200; 115 } 116 } 117 118 /*XXX: guess, can't confirm until we get fw... */ 119 if (stat & 0x00000100) { 120 if (fault->buffer[1]) { 121 nvkm_event_send(&fault->event, 1, 1, NULL, 0); 122 stat &= ~0x00000100; 123 } 124 } 125 126 if (stat) { 127 nvkm_debug(subdev, "intr %08x\n", stat); 128 } 129 } 130 131 static void 132 tu102_fault_fini(struct nvkm_fault *fault) 133 { 134 nvkm_notify_put(&fault->nrpfb); 135 if (fault->buffer[0]) 136 fault->func->buffer.fini(fault->buffer[0]); 137 /*XXX: disable priv faults */ 138 } 139 140 static void 141 tu102_fault_init(struct nvkm_fault *fault) 142 { 143 /*XXX: enable priv faults */ 144 fault->func->buffer.init(fault->buffer[0]); 145 nvkm_notify_get(&fault->nrpfb); 146 } 147 148 static const struct nvkm_fault_func 149 tu102_fault = { 150 .oneinit = gv100_fault_oneinit, 151 .init = tu102_fault_init, 152 .fini = tu102_fault_fini, 153 .intr = tu102_fault_intr, 154 .buffer.nr = 2, 155 .buffer.entry_size = 32, 156 .buffer.info = tu102_fault_buffer_info, 157 .buffer.init = tu102_fault_buffer_init, 158 .buffer.fini = tu102_fault_buffer_fini, 159 .buffer.intr = tu102_fault_buffer_intr, 160 .user = { { 0, 0, VOLTA_FAULT_BUFFER_A }, 1 }, 161 }; 162 163 int 164 tu102_fault_new(struct nvkm_device *device, int index, 165 struct nvkm_fault **pfault) 166 { 167 return nvkm_fault_new_(&tu102_fault, device, index, pfault); 168 } 169