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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/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_t
34tu102_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 void
43tu102_fault_buffer_intr(struct nvkm_fault_buffer *buffer, bool enable)
44{
45 if (enable)
46 nvkm_inth_allow(&buffer->inth);
47 else
48 nvkm_inth_block(&buffer->inth);
49}
50
51static void
52tu102_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 void
61tu102_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 void
73tu102_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_t
86tu102_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 void
116tu102_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 void
128tu102_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 int
137tu102_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_func
161tu102_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
175int
176tu102_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}