1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
// SPDX-License-Identifier: GPL-2.0
/* Copyright © 2024 Intel Corporation */
#include <linux/bitfield.h>
#include <linux/bits.h>
#include <linux/cleanup.h>
#include <linux/errno.h>
#include <linux/intel_vsec.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/types.h>
#include "xe_device.h"
#include "xe_device_types.h"
#include "xe_drv.h"
#include "xe_mmio.h"
#include "xe_platform_types.h"
#include "xe_pm.h"
#include "xe_vsec.h"
#include "regs/xe_pmt.h"
/* PMT GUID value for BMG devices. NOTE: this is NOT a PCI id */
#define BMG_DEVICE_ID 0xE2F8
static struct intel_vsec_header bmg_telemetry = {
.length = 0x10,
.id = VSEC_ID_TELEMETRY,
.num_entries = 2,
.entry_size = 4,
.tbir = 0,
.offset = BMG_DISCOVERY_OFFSET,
};
static struct intel_vsec_header bmg_punit_crashlog = {
.length = 0x10,
.id = VSEC_ID_CRASHLOG,
.num_entries = 1,
.entry_size = 4,
.tbir = 0,
.offset = BMG_DISCOVERY_OFFSET + 0x60,
};
static struct intel_vsec_header bmg_oobmsm_crashlog = {
.length = 0x10,
.id = VSEC_ID_CRASHLOG,
.num_entries = 1,
.entry_size = 4,
.tbir = 0,
.offset = BMG_DISCOVERY_OFFSET + 0x78,
};
static struct intel_vsec_header *bmg_capabilities[] = {
&bmg_telemetry,
&bmg_punit_crashlog,
&bmg_oobmsm_crashlog,
NULL
};
enum xe_vsec {
XE_VSEC_UNKNOWN = 0,
XE_VSEC_BMG,
};
static struct intel_vsec_platform_info xe_vsec_info[] = {
[XE_VSEC_BMG] = {
.caps = VSEC_CAP_TELEMETRY | VSEC_CAP_CRASHLOG,
.headers = bmg_capabilities,
},
{ }
};
/*
* The GUID will have the following bits to decode:
* [0:3] - {Telemetry space iteration number (0,1,..)}
* [4:7] - Segment (SEGMENT_INDEPENDENT-0, Client-1, Server-2)
* [8:11] - SOC_SKU
* [12:27] – Device ID – changes for each down bin SKU’s
* [28:29] - Capability Type (Crashlog-0, Telemetry Aggregator-1, Watcher-2)
* [30:31] - Record-ID (0-PUNIT, 1-OOBMSM_0, 2-OOBMSM_1)
*/
#define GUID_TELEM_ITERATION GENMASK(3, 0)
#define GUID_SEGMENT GENMASK(7, 4)
#define GUID_SOC_SKU GENMASK(11, 8)
#define GUID_DEVICE_ID GENMASK(27, 12)
#define GUID_CAP_TYPE GENMASK(29, 28)
#define GUID_RECORD_ID GENMASK(31, 30)
#define PUNIT_TELEMETRY_OFFSET 0x0200
#define PUNIT_WATCHER_OFFSET 0x14A0
#define OOBMSM_0_WATCHER_OFFSET 0x18D8
#define OOBMSM_1_TELEMETRY_OFFSET 0x1000
enum record_id {
PUNIT,
OOBMSM_0,
OOBMSM_1,
};
enum capability {
CRASHLOG,
TELEMETRY,
WATCHER,
};
static int xe_guid_decode(u32 guid, int *index, u32 *offset)
{
u32 record_id = FIELD_GET(GUID_RECORD_ID, guid);
u32 cap_type = FIELD_GET(GUID_CAP_TYPE, guid);
u32 device_id = FIELD_GET(GUID_DEVICE_ID, guid);
if (device_id != BMG_DEVICE_ID)
return -ENODEV;
if (cap_type > WATCHER)
return -EINVAL;
*offset = 0;
if (cap_type == CRASHLOG) {
*index = record_id == PUNIT ? 2 : 4;
return 0;
}
switch (record_id) {
case PUNIT:
*index = 0;
if (cap_type == TELEMETRY)
*offset = PUNIT_TELEMETRY_OFFSET;
else
*offset = PUNIT_WATCHER_OFFSET;
break;
case OOBMSM_0:
*index = 1;
if (cap_type == WATCHER)
*offset = OOBMSM_0_WATCHER_OFFSET;
break;
case OOBMSM_1:
*index = 1;
if (cap_type == TELEMETRY)
*offset = OOBMSM_1_TELEMETRY_OFFSET;
break;
default:
return -EINVAL;
}
return 0;
}
static int xe_pmt_telem_read(struct pci_dev *pdev, u32 guid, u64 *data, loff_t user_offset,
u32 count)
{
struct xe_device *xe = pdev_to_xe_device(pdev);
void __iomem *telem_addr = xe->mmio.regs + BMG_TELEMETRY_OFFSET;
u32 mem_region;
u32 offset;
int ret;
ret = xe_guid_decode(guid, &mem_region, &offset);
if (ret)
return ret;
telem_addr += offset + user_offset;
guard(mutex)(&xe->pmt.lock);
/* indicate that we are not at an appropriate power level */
if (!xe_pm_runtime_get_if_active(xe))
return -ENODATA;
/* set SoC re-mapper index register based on GUID memory region */
xe_mmio_rmw32(xe_root_tile_mmio(xe), SG_REMAP_INDEX1, SG_REMAP_BITS,
REG_FIELD_PREP(SG_REMAP_BITS, mem_region));
memcpy_fromio(data, telem_addr, count);
xe_pm_runtime_put(xe);
return count;
}
static struct pmt_callbacks xe_pmt_cb = {
.read_telem = xe_pmt_telem_read,
};
static const int vsec_platforms[] = {
[XE_BATTLEMAGE] = XE_VSEC_BMG,
};
static enum xe_vsec get_platform_info(struct xe_device *xe)
{
if (xe->info.platform > XE_BATTLEMAGE)
return XE_VSEC_UNKNOWN;
return vsec_platforms[xe->info.platform];
}
/**
* xe_vsec_init - Initialize resources and add intel_vsec auxiliary
* interface
* @xe: valid xe instance
*/
void xe_vsec_init(struct xe_device *xe)
{
struct intel_vsec_platform_info *info;
struct device *dev = xe->drm.dev;
struct pci_dev *pdev = to_pci_dev(dev);
enum xe_vsec platform;
platform = get_platform_info(xe);
if (platform == XE_VSEC_UNKNOWN)
return;
info = &xe_vsec_info[platform];
if (!info->headers)
return;
switch (platform) {
case XE_VSEC_BMG:
info->priv_data = &xe_pmt_cb;
break;
default:
break;
}
/*
* Register a VSEC. Cleanup is handled using device managed
* resources.
*/
intel_vsec_register(pdev, info);
}
MODULE_IMPORT_NS("INTEL_VSEC");
|
