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
tu102_fault_buffer_notify(struct nvkm_inth * inth)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
tu102_fault_buffer_intr(struct nvkm_fault_buffer * buffer,bool enable)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
tu102_fault_buffer_fini(struct nvkm_fault_buffer * buffer)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
tu102_fault_buffer_init(struct nvkm_fault_buffer * buffer)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
tu102_fault_buffer_info(struct nvkm_fault_buffer * buffer)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
tu102_fault_info_fault(struct nvkm_inth * inth)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
tu102_fault_fini(struct nvkm_fault * fault)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
tu102_fault_init(struct nvkm_fault * fault)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
tu102_fault_oneinit(struct nvkm_fault * fault)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
tu102_fault_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_fault ** pfault)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