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1/*2 * Copyright 2018 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * 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 33static irqreturn_t34tu102_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 42static void43tu102_fault_buffer_intr(struct nvkm_fault_buffer *buffer, bool enable)44{45 if (enable)46 nvkm_inth_allow(&buffer->inth);47 else48 nvkm_inth_block(&buffer->inth);49}50 51static void52tu102_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 60static void61tu102_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 72static void73tu102_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 85static irqreturn_t86tu102_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 115static void116tu102_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 127static void128tu102_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 136static int137tu102_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 160static const struct nvkm_fault_func161tu102_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 175int176tu102_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