tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1.. SPDX-License-Identifier: GPL-2.0
2
3=====================
4Flexible Presentation
5=====================
6This system has a single socket with two CXL host bridges. Each host bridge
7has two CXL memory expanders with a 4GB of memory (32GB total).
8
9On this system, the platform designer wanted to provide the user flexibility
10to configure the memory devices in various interleave or NUMA node
11configurations. So they provided every combination.
12
13Things to note:
14
15* Cross-Bridge interleave is described in one CFMWS that covers all capacity.
16* One CFMWS is also described per-host bridge.
17* One CFMWS is also described per-device.
18* This SRAT describes one node for each of the above CFMWS.
19* The HMAT describes performance for each node in the SRAT.
20
21:doc:`CEDT <../acpi/cedt>`::
22
23 Subtable Type : 00 [CXL Host Bridge Structure]
24 Reserved : 00
25 Length : 0020
26 Associated host bridge : 00000007
27 Specification version : 00000001
28 Reserved : 00000000
29 Register base : 0000010370400000
30 Register length : 0000000000010000
31
32 Subtable Type : 00 [CXL Host Bridge Structure]
33 Reserved : 00
34 Length : 0020
35 Associated host bridge : 00000006
36 Specification version : 00000001
37 Reserved : 00000000
38 Register base : 0000010380800000
39 Register length : 0000000000010000
40
41 Subtable Type : 01 [CXL Fixed Memory Window Structure]
42 Reserved : 00
43 Length : 002C
44 Reserved : 00000000
45 Window base address : 0000001000000000
46 Window size : 0000000400000000
47 Interleave Members (2^n) : 01
48 Interleave Arithmetic : 00
49 Reserved : 0000
50 Granularity : 00000000
51 Restrictions : 0006
52 QtgId : 0001
53 First Target : 00000007
54 Second Target : 00000006
55
56 Subtable Type : 01 [CXL Fixed Memory Window Structure]
57 Reserved : 00
58 Length : 002C
59 Reserved : 00000000
60 Window base address : 0000002000000000
61 Window size : 0000000200000000
62 Interleave Members (2^n) : 00
63 Interleave Arithmetic : 00
64 Reserved : 0000
65 Granularity : 00000000
66 Restrictions : 0006
67 QtgId : 0001
68 First Target : 00000007
69
70 Subtable Type : 01 [CXL Fixed Memory Window Structure]
71 Reserved : 00
72 Length : 002C
73 Reserved : 00000000
74 Window base address : 0000002200000000
75 Window size : 0000000200000000
76 Interleave Members (2^n) : 00
77 Interleave Arithmetic : 00
78 Reserved : 0000
79 Granularity : 00000000
80 Restrictions : 0006
81 QtgId : 0001
82 First Target : 00000006
83
84 Subtable Type : 01 [CXL Fixed Memory Window Structure]
85 Reserved : 00
86 Length : 002C
87 Reserved : 00000000
88 Window base address : 0000003000000000
89 Window size : 0000000100000000
90 Interleave Members (2^n) : 00
91 Interleave Arithmetic : 00
92 Reserved : 0000
93 Granularity : 00000000
94 Restrictions : 0006
95 QtgId : 0001
96 First Target : 00000007
97
98 Subtable Type : 01 [CXL Fixed Memory Window Structure]
99 Reserved : 00
100 Length : 002C
101 Reserved : 00000000
102 Window base address : 0000003100000000
103 Window size : 0000000100000000
104 Interleave Members (2^n) : 00
105 Interleave Arithmetic : 00
106 Reserved : 0000
107 Granularity : 00000000
108 Restrictions : 0006
109 QtgId : 0001
110 First Target : 00000007
111
112 Subtable Type : 01 [CXL Fixed Memory Window Structure]
113 Reserved : 00
114 Length : 002C
115 Reserved : 00000000
116 Window base address : 0000003200000000
117 Window size : 0000000100000000
118 Interleave Members (2^n) : 00
119 Interleave Arithmetic : 00
120 Reserved : 0000
121 Granularity : 00000000
122 Restrictions : 0006
123 QtgId : 0001
124 First Target : 00000006
125
126 Subtable Type : 01 [CXL Fixed Memory Window Structure]
127 Reserved : 00
128 Length : 002C
129 Reserved : 00000000
130 Window base address : 0000003300000000
131 Window size : 0000000100000000
132 Interleave Members (2^n) : 00
133 Interleave Arithmetic : 00
134 Reserved : 0000
135 Granularity : 00000000
136 Restrictions : 0006
137 QtgId : 0001
138 First Target : 00000006
139
140:doc:`SRAT <../acpi/srat>`::
141
142 Subtable Type : 01 [Memory Affinity]
143 Length : 28
144 Proximity Domain : 00000001
145 Reserved1 : 0000
146 Base Address : 0000001000000000
147 Address Length : 0000000400000000
148 Reserved2 : 00000000
149 Flags (decoded below) : 0000000B
150 Enabled : 1
151 Hot Pluggable : 1
152 Non-Volatile : 0
153
154 Subtable Type : 01 [Memory Affinity]
155 Length : 28
156 Proximity Domain : 00000002
157 Reserved1 : 0000
158 Base Address : 0000002000000000
159 Address Length : 0000000200000000
160 Reserved2 : 00000000
161 Flags (decoded below) : 0000000B
162 Enabled : 1
163 Hot Pluggable : 1
164 Non-Volatile : 0
165
166 Subtable Type : 01 [Memory Affinity]
167 Length : 28
168 Proximity Domain : 00000003
169 Reserved1 : 0000
170 Base Address : 0000002200000000
171 Address Length : 0000000200000000
172 Reserved2 : 00000000
173 Flags (decoded below) : 0000000B
174 Enabled : 1
175 Hot Pluggable : 1
176 Non-Volatile : 0
177
178 Subtable Type : 01 [Memory Affinity]
179 Length : 28
180 Proximity Domain : 00000004
181 Reserved1 : 0000
182 Base Address : 0000003000000000
183 Address Length : 0000000100000000
184 Reserved2 : 00000000
185 Flags (decoded below) : 0000000B
186 Enabled : 1
187 Hot Pluggable : 1
188 Non-Volatile : 0
189
190 Subtable Type : 01 [Memory Affinity]
191 Length : 28
192 Proximity Domain : 00000005
193 Reserved1 : 0000
194 Base Address : 0000003100000000
195 Address Length : 0000000100000000
196 Reserved2 : 00000000
197 Flags (decoded below) : 0000000B
198 Enabled : 1
199 Hot Pluggable : 1
200 Non-Volatile : 0
201
202 Subtable Type : 01 [Memory Affinity]
203 Length : 28
204 Proximity Domain : 00000006
205 Reserved1 : 0000
206 Base Address : 0000003200000000
207 Address Length : 0000000100000000
208 Reserved2 : 00000000
209 Flags (decoded below) : 0000000B
210 Enabled : 1
211 Hot Pluggable : 1
212 Non-Volatile : 0
213
214 Subtable Type : 01 [Memory Affinity]
215 Length : 28
216 Proximity Domain : 00000007
217 Reserved1 : 0000
218 Base Address : 0000003300000000
219 Address Length : 0000000100000000
220 Reserved2 : 00000000
221 Flags (decoded below) : 0000000B
222 Enabled : 1
223 Hot Pluggable : 1
224 Non-Volatile : 0
225
226:doc:`HMAT <../acpi/hmat>`::
227
228 Structure Type : 0001 [SLLBI]
229 Data Type : 00 [Latency]
230 Target Proximity Domain List : 00000000
231 Target Proximity Domain List : 00000001
232 Target Proximity Domain List : 00000002
233 Target Proximity Domain List : 00000003
234 Target Proximity Domain List : 00000004
235 Target Proximity Domain List : 00000005
236 Target Proximity Domain List : 00000006
237 Target Proximity Domain List : 00000007
238 Entry : 0080
239 Entry : 0100
240 Entry : 0100
241 Entry : 0100
242 Entry : 0100
243 Entry : 0100
244 Entry : 0100
245 Entry : 0100
246
247 Structure Type : 0001 [SLLBI]
248 Data Type : 03 [Bandwidth]
249 Target Proximity Domain List : 00000000
250 Target Proximity Domain List : 00000001
251 Target Proximity Domain List : 00000002
252 Target Proximity Domain List : 00000003
253 Target Proximity Domain List : 00000004
254 Target Proximity Domain List : 00000005
255 Target Proximity Domain List : 00000006
256 Target Proximity Domain List : 00000007
257 Entry : 1200
258 Entry : 0400
259 Entry : 0200
260 Entry : 0200
261 Entry : 0100
262 Entry : 0100
263 Entry : 0100
264 Entry : 0100
265
266:doc:`SLIT <../acpi/slit>`::
267
268 Signature : "SLIT" [System Locality Information Table]
269 Localities : 0000000000000003
270 Locality 0 : 10 20 20 20 20 20 20 20
271 Locality 1 : FF 0A FF FF FF FF FF FF
272 Locality 2 : FF FF 0A FF FF FF FF FF
273 Locality 3 : FF FF FF 0A FF FF FF FF
274 Locality 4 : FF FF FF FF 0A FF FF FF
275 Locality 5 : FF FF FF FF FF 0A FF FF
276 Locality 6 : FF FF FF FF FF FF 0A FF
277 Locality 7 : FF FF FF FF FF FF FF 0A
278
279:doc:`DSDT <../acpi/dsdt>`::
280
281 Scope (_SB)
282 {
283 Device (S0D0)
284 {
285 Name (_HID, "ACPI0016" /* Compute Express Link Host Bridge */) // _HID: Hardware ID
286 ...
287 Name (_UID, 0x07) // _UID: Unique ID
288 }
289 ...
290 Device (S0D5)
291 {
292 Name (_HID, "ACPI0016" /* Compute Express Link Host Bridge */) // _HID: Hardware ID
293 ...
294 Name (_UID, 0x06) // _UID: Unique ID
295 }
296 }