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
gv100_fault_buffer_process(struct nvkm_fault_buffer * buffer)31 gv100_fault_buffer_process(struct nvkm_fault_buffer *buffer)
32 {
33 struct nvkm_device *device = buffer->fault->subdev.device;
34 struct nvkm_memory *mem = buffer->mem;
35 u32 get = nvkm_rd32(device, buffer->get);
36 u32 put = nvkm_rd32(device, buffer->put);
37 if (put == get)
38 return;
39
40 nvkm_kmap(mem);
41 while (get != put) {
42 const u32 base = get * buffer->fault->func->buffer.entry_size;
43 const u32 instlo = nvkm_ro32(mem, base + 0x00);
44 const u32 insthi = nvkm_ro32(mem, base + 0x04);
45 const u32 addrlo = nvkm_ro32(mem, base + 0x08);
46 const u32 addrhi = nvkm_ro32(mem, base + 0x0c);
47 const u32 timelo = nvkm_ro32(mem, base + 0x10);
48 const u32 timehi = nvkm_ro32(mem, base + 0x14);
49 const u32 info0 = nvkm_ro32(mem, base + 0x18);
50 const u32 info1 = nvkm_ro32(mem, base + 0x1c);
51 struct nvkm_fault_data info;
52
53 if (++get == buffer->entries)
54 get = 0;
55 nvkm_wr32(device, buffer->get, get);
56
57 info.addr = ((u64)addrhi << 32) | addrlo;
58 info.inst = ((u64)insthi << 32) | instlo;
59 info.time = ((u64)timehi << 32) | timelo;
60 info.engine = (info0 & 0x000000ff);
61 info.valid = (info1 & 0x80000000) >> 31;
62 info.gpc = (info1 & 0x1f000000) >> 24;
63 info.hub = (info1 & 0x00100000) >> 20;
64 info.access = (info1 & 0x000f0000) >> 16;
65 info.client = (info1 & 0x00007f00) >> 8;
66 info.reason = (info1 & 0x0000001f);
67
68 nvkm_fifo_fault(device->fifo, &info);
69 }
70 nvkm_done(mem);
71 }
72
73 static void
gv100_fault_buffer_intr(struct nvkm_fault_buffer * buffer,bool enable)74 gv100_fault_buffer_intr(struct nvkm_fault_buffer *buffer, bool enable)
75 {
76 struct nvkm_device *device = buffer->fault->subdev.device;
77 const u32 intr = buffer->id ? 0x08000000 : 0x20000000;
78 if (enable)
79 nvkm_mask(device, 0x100a2c, intr, intr);
80 else
81 nvkm_mask(device, 0x100a34, intr, intr);
82 }
83
84 static void
gv100_fault_buffer_fini(struct nvkm_fault_buffer * buffer)85 gv100_fault_buffer_fini(struct nvkm_fault_buffer *buffer)
86 {
87 struct nvkm_device *device = buffer->fault->subdev.device;
88 const u32 foff = buffer->id * 0x14;
89 nvkm_mask(device, 0x100e34 + foff, 0x80000000, 0x00000000);
90 }
91
92 static void
gv100_fault_buffer_init(struct nvkm_fault_buffer * buffer)93 gv100_fault_buffer_init(struct nvkm_fault_buffer *buffer)
94 {
95 struct nvkm_device *device = buffer->fault->subdev.device;
96 const u32 foff = buffer->id * 0x14;
97
98 nvkm_mask(device, 0x100e34 + foff, 0xc0000000, 0x40000000);
99 nvkm_wr32(device, 0x100e28 + foff, upper_32_bits(buffer->addr));
100 nvkm_wr32(device, 0x100e24 + foff, lower_32_bits(buffer->addr));
101 nvkm_mask(device, 0x100e34 + foff, 0x80000000, 0x80000000);
102 }
103
104 static void
gv100_fault_buffer_info(struct nvkm_fault_buffer * buffer)105 gv100_fault_buffer_info(struct nvkm_fault_buffer *buffer)
106 {
107 struct nvkm_device *device = buffer->fault->subdev.device;
108 const u32 foff = buffer->id * 0x14;
109
110 nvkm_mask(device, 0x100e34 + foff, 0x40000000, 0x40000000);
111
112 buffer->entries = nvkm_rd32(device, 0x100e34 + foff) & 0x000fffff;
113 buffer->get = 0x100e2c + foff;
114 buffer->put = 0x100e30 + foff;
115 }
116
117 static int
gv100_fault_ntfy_nrpfb(struct nvkm_notify * notify)118 gv100_fault_ntfy_nrpfb(struct nvkm_notify *notify)
119 {
120 struct nvkm_fault *fault = container_of(notify, typeof(*fault), nrpfb);
121 gv100_fault_buffer_process(fault->buffer[0]);
122 return NVKM_NOTIFY_KEEP;
123 }
124
125 static void
gv100_fault_intr_fault(struct nvkm_fault * fault)126 gv100_fault_intr_fault(struct nvkm_fault *fault)
127 {
128 struct nvkm_subdev *subdev = &fault->subdev;
129 struct nvkm_device *device = subdev->device;
130 struct nvkm_fault_data info;
131 const u32 addrlo = nvkm_rd32(device, 0x100e4c);
132 const u32 addrhi = nvkm_rd32(device, 0x100e50);
133 const u32 info0 = nvkm_rd32(device, 0x100e54);
134 const u32 insthi = nvkm_rd32(device, 0x100e58);
135 const u32 info1 = nvkm_rd32(device, 0x100e5c);
136
137 info.addr = ((u64)addrhi << 32) | addrlo;
138 info.inst = ((u64)insthi << 32) | (info0 & 0xfffff000);
139 info.time = 0;
140 info.engine = (info0 & 0x000000ff);
141 info.valid = (info1 & 0x80000000) >> 31;
142 info.gpc = (info1 & 0x1f000000) >> 24;
143 info.hub = (info1 & 0x00100000) >> 20;
144 info.access = (info1 & 0x000f0000) >> 16;
145 info.client = (info1 & 0x00007f00) >> 8;
146 info.reason = (info1 & 0x0000001f);
147
148 nvkm_fifo_fault(device->fifo, &info);
149 }
150
151 static void
gv100_fault_intr(struct nvkm_fault * fault)152 gv100_fault_intr(struct nvkm_fault *fault)
153 {
154 struct nvkm_subdev *subdev = &fault->subdev;
155 struct nvkm_device *device = subdev->device;
156 u32 stat = nvkm_rd32(device, 0x100a20);
157
158 if (stat & 0x80000000) {
159 gv100_fault_intr_fault(fault);
160 nvkm_wr32(device, 0x100e60, 0x80000000);
161 stat &= ~0x80000000;
162 }
163
164 if (stat & 0x20000000) {
165 if (fault->buffer[0]) {
166 nvkm_event_send(&fault->event, 1, 0, NULL, 0);
167 stat &= ~0x20000000;
168 }
169 }
170
171 if (stat & 0x08000000) {
172 if (fault->buffer[1]) {
173 nvkm_event_send(&fault->event, 1, 1, NULL, 0);
174 stat &= ~0x08000000;
175 }
176 }
177
178 if (stat) {
179 nvkm_debug(subdev, "intr %08x\n", stat);
180 }
181 }
182
183 static void
gv100_fault_fini(struct nvkm_fault * fault)184 gv100_fault_fini(struct nvkm_fault *fault)
185 {
186 nvkm_notify_put(&fault->nrpfb);
187 if (fault->buffer[0])
188 fault->func->buffer.fini(fault->buffer[0]);
189 nvkm_mask(fault->subdev.device, 0x100a34, 0x80000000, 0x80000000);
190 }
191
192 static void
gv100_fault_init(struct nvkm_fault * fault)193 gv100_fault_init(struct nvkm_fault *fault)
194 {
195 nvkm_mask(fault->subdev.device, 0x100a2c, 0x80000000, 0x80000000);
196 fault->func->buffer.init(fault->buffer[0]);
197 nvkm_notify_get(&fault->nrpfb);
198 }
199
200 int
gv100_fault_oneinit(struct nvkm_fault * fault)201 gv100_fault_oneinit(struct nvkm_fault *fault)
202 {
203 return nvkm_notify_init(&fault->buffer[0]->object, &fault->event,
204 gv100_fault_ntfy_nrpfb, true, NULL, 0, 0,
205 &fault->nrpfb);
206 }
207
208 static const struct nvkm_fault_func
209 gv100_fault = {
210 .oneinit = gv100_fault_oneinit,
211 .init = gv100_fault_init,
212 .fini = gv100_fault_fini,
213 .intr = gv100_fault_intr,
214 .buffer.nr = 2,
215 .buffer.entry_size = 32,
216 .buffer.info = gv100_fault_buffer_info,
217 .buffer.init = gv100_fault_buffer_init,
218 .buffer.fini = gv100_fault_buffer_fini,
219 .buffer.intr = gv100_fault_buffer_intr,
220 /*TODO: Figure out how to expose non-replayable fault buffer, which,
221 * for some reason, is where recoverable CE faults appear...
222 *
223 * It's a bit tricky, as both NVKM and SVM will need access to
224 * the non-replayable fault buffer.
225 */
226 .user = { { 0, 0, VOLTA_FAULT_BUFFER_A }, 1 },
227 };
228
229 int
gv100_fault_new(struct nvkm_device * device,int index,struct nvkm_fault ** pfault)230 gv100_fault_new(struct nvkm_device *device, int index,
231 struct nvkm_fault **pfault)
232 {
233 return nvkm_fault_new_(&gv100_fault, device, index, pfault);
234 }
235
