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 } 297