1/* $NetBSD: amd_acpi.h,v 1.2 2021/12/18 23:45:08 riastradh Exp $ */ 2 3/* 4 * Copyright 2012 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 */ 25 26#ifndef AMD_ACPI_H 27#define AMD_ACPI_H 28 29#define ACPI_AC_CLASS "ac_adapter" 30 31struct atif_verify_interface { 32 u16 size; /* structure size in bytes (includes size field) */ 33 u16 version; /* version */ 34 u32 notification_mask; /* supported notifications mask */ 35 u32 function_bits; /* supported functions bit vector */ 36} __packed; 37 38struct atif_system_params { 39 u16 size; /* structure size in bytes (includes size field) */ 40 u32 valid_mask; /* valid flags mask */ 41 u32 flags; /* flags */ 42 u8 command_code; /* notify command code */ 43} __packed; 44 45struct atif_sbios_requests { 46 u16 size; /* structure size in bytes (includes size field) */ 47 u32 pending; /* pending sbios requests */ 48 u8 panel_exp_mode; /* panel expansion mode */ 49 u8 thermal_gfx; /* thermal state: target gfx controller */ 50 u8 thermal_state; /* thermal state: state id (0: exit state, non-0: state) */ 51 u8 forced_power_gfx; /* forced power state: target gfx controller */ 52 u8 forced_power_state; /* forced power state: state id */ 53 u8 system_power_src; /* system power source */ 54 u8 backlight_level; /* panel backlight level (0-255) */ 55} __packed; 56 57struct atif_qbtc_arguments { 58 u16 size; /* structure size in bytes (includes size field) */ 59 u8 requested_display; /* which display is requested */ 60} __packed; 61 62#define ATIF_QBTC_MAX_DATA_POINTS 99 63 64struct atif_qbtc_data_point { 65 u8 luminance; /* luminance in percent */ 66 u8 ipnut_signal; /* input signal in range 0-255 */ 67} __packed; 68 69struct atif_qbtc_output { 70 u16 size; /* structure size in bytes (includes size field) */ 71 u16 flags; /* all zeroes */ 72 u8 error_code; /* error code */ 73 u8 ac_level; /* default brightness on AC power */ 74 u8 dc_level; /* default brightness on DC power */ 75 u8 min_input_signal; /* max input signal in range 0-255 */ 76 u8 max_input_signal; /* min input signal in range 0-255 */ 77 u8 number_of_points; /* number of data points */ 78 struct atif_qbtc_data_point data_points[ATIF_QBTC_MAX_DATA_POINTS]; 79} __packed; 80 81#define ATIF_NOTIFY_MASK 0x3 82#define ATIF_NOTIFY_NONE 0 83#define ATIF_NOTIFY_81 1 84#define ATIF_NOTIFY_N 2 85 86struct atcs_verify_interface { 87 u16 size; /* structure size in bytes (includes size field) */ 88 u16 version; /* version */ 89 u32 function_bits; /* supported functions bit vector */ 90} __packed; 91 92#define ATCS_VALID_FLAGS_MASK 0x3 93 94struct atcs_pref_req_input { 95 u16 size; /* structure size in bytes (includes size field) */ 96 u16 client_id; /* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */ 97 u16 valid_flags_mask; /* valid flags mask */ 98 u16 flags; /* flags */ 99 u8 req_type; /* request type */ 100 u8 perf_req; /* performance request */ 101} __packed; 102 103struct atcs_pref_req_output { 104 u16 size; /* structure size in bytes (includes size field) */ 105 u8 ret_val; /* return value */ 106} __packed; 107 108/* AMD hw uses four ACPI control methods: 109 * 1. ATIF 110 * ARG0: (ACPI_INTEGER) function code 111 * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes 112 * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes 113 * ATIF provides an entry point for the gfx driver to interact with the sbios. 114 * The AMD ACPI notification mechanism uses Notify (VGA, 0x81) or a custom 115 * notification. Which notification is used as indicated by the ATIF Control 116 * Method GET_SYSTEM_PARAMETERS. When the driver receives Notify (VGA, 0x81) or 117 * a custom notification it invokes ATIF Control Method GET_SYSTEM_BIOS_REQUESTS 118 * to identify pending System BIOS requests and associated parameters. For 119 * example, if one of the pending requests is DISPLAY_SWITCH_REQUEST, the driver 120 * will perform display device detection and invoke ATIF Control Method 121 * SELECT_ACTIVE_DISPLAYS. 122 * 123 * 2. ATPX 124 * ARG0: (ACPI_INTEGER) function code 125 * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes 126 * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes 127 * ATPX methods are used on PowerXpress systems to handle mux switching and 128 * discrete GPU power control. 129 * 130 * 3. ATRM 131 * ARG0: (ACPI_INTEGER) offset of vbios rom data 132 * ARG1: (ACPI_BUFFER) size of the buffer to fill (up to 4K). 133 * OUTPUT: (ACPI_BUFFER) output buffer 134 * ATRM provides an interfacess to access the discrete GPU vbios image on 135 * PowerXpress systems with multiple GPUs. 136 * 137 * 4. ATCS 138 * ARG0: (ACPI_INTEGER) function code 139 * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes 140 * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes 141 * ATCS provides an interface to AMD chipset specific functionality. 142 * 143 */ 144/* ATIF */ 145#define ATIF_FUNCTION_VERIFY_INTERFACE 0x0 146/* ARG0: ATIF_FUNCTION_VERIFY_INTERFACE 147 * ARG1: none 148 * OUTPUT: 149 * WORD - structure size in bytes (includes size field) 150 * WORD - version 151 * DWORD - supported notifications mask 152 * DWORD - supported functions bit vector 153 */ 154/* Notifications mask */ 155# define ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED (1 << 2) 156# define ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED (1 << 3) 157# define ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED (1 << 4) 158# define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED (1 << 7) 159# define ATIF_DGPU_DISPLAY_EVENT_SUPPORTED (1 << 8) 160# define ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST_SUPPORTED (1 << 12) 161/* supported functions vector */ 162# define ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED (1 << 0) 163# define ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED (1 << 1) 164# define ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED (1 << 12) 165# define ATIF_QUERY_BACKLIGHT_TRANSFER_CHARACTERISTICS_SUPPORTED (1 << 15) 166# define ATIF_READY_TO_UNDOCK_NOTIFICATION_SUPPORTED (1 << 16) 167# define ATIF_GET_EXTERNAL_GPU_INFORMATION_SUPPORTED (1 << 20) 168#define ATIF_FUNCTION_GET_SYSTEM_PARAMETERS 0x1 169/* ARG0: ATIF_FUNCTION_GET_SYSTEM_PARAMETERS 170 * ARG1: none 171 * OUTPUT: 172 * WORD - structure size in bytes (includes size field) 173 * DWORD - valid flags mask 174 * DWORD - flags 175 * 176 * OR 177 * 178 * WORD - structure size in bytes (includes size field) 179 * DWORD - valid flags mask 180 * DWORD - flags 181 * BYTE - notify command code 182 * 183 * flags 184 * bits 1:0: 185 * 0 - Notify(VGA, 0x81) is not used for notification 186 * 1 - Notify(VGA, 0x81) is used for notification 187 * 2 - Notify(VGA, n) is used for notification where 188 * n (0xd0-0xd9) is specified in notify command code. 189 * bit 2: 190 * 1 - lid changes not reported though int10 191 * bit 3: 192 * 1 - system bios controls overclocking 193 * bit 4: 194 * 1 - enable overclocking 195 */ 196#define ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS 0x2 197/* ARG0: ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS 198 * ARG1: none 199 * OUTPUT: 200 * WORD - structure size in bytes (includes size field) 201 * DWORD - pending sbios requests 202 * BYTE - reserved (all zeroes) 203 * BYTE - thermal state: target gfx controller 204 * BYTE - thermal state: state id (0: exit state, non-0: state) 205 * BYTE - forced power state: target gfx controller 206 * BYTE - forced power state: state id (0: forced state, non-0: state) 207 * BYTE - system power source 208 * BYTE - panel backlight level (0-255) 209 * BYTE - GPU package power limit: target gfx controller 210 * DWORD - GPU package power limit: value (24:8 fractional format, Watts) 211 */ 212/* pending sbios requests */ 213# define ATIF_THERMAL_STATE_CHANGE_REQUEST (1 << 2) 214# define ATIF_FORCED_POWER_STATE_CHANGE_REQUEST (1 << 3) 215# define ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST (1 << 4) 216# define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST (1 << 7) 217# define ATIF_DGPU_DISPLAY_EVENT (1 << 8) 218# define ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST (1 << 12) 219/* target gfx controller */ 220# define ATIF_TARGET_GFX_SINGLE 0 221# define ATIF_TARGET_GFX_PX_IGPU 1 222# define ATIF_TARGET_GFX_PX_DGPU 2 223/* system power source */ 224# define ATIF_POWER_SOURCE_AC 1 225# define ATIF_POWER_SOURCE_DC 2 226# define ATIF_POWER_SOURCE_RESTRICTED_AC_1 3 227# define ATIF_POWER_SOURCE_RESTRICTED_AC_2 4 228#define ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION 0xD 229/* ARG0: ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION 230 * ARG1: 231 * WORD - structure size in bytes (includes size field) 232 * WORD - gfx controller id 233 * BYTE - current temperature (degress Celsius) 234 * OUTPUT: none 235 */ 236#define ATIF_FUNCTION_QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS 0x10 237/* ARG0: ATIF_FUNCTION_QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS 238 * ARG1: 239 * WORD - structure size in bytes (includes size field) 240 * BYTE - requested display 241 * OUTPUT: 242 * WORD - structure size in bytes (includes size field) 243 * WORD - flags (currently all 16 bits are reserved) 244 * BYTE - error code (on failure, disregard all below fields) 245 * BYTE - AC level (default brightness in percent when machine has full power) 246 * BYTE - DC level (default brightness in percent when machine is on battery) 247 * BYTE - min input signal, in range 0-255, corresponding to 0% backlight 248 * BYTE - max input signal, in range 0-255, corresponding to 100% backlight 249 * BYTE - number of reported data points 250 * BYTE - luminance level in percent \ repeated structure 251 * BYTE - input signal in range 0-255 / does not have entries for 0% and 100% 252 */ 253/* requested display */ 254# define ATIF_QBTC_REQUEST_LCD1 0 255# define ATIF_QBTC_REQUEST_CRT1 1 256# define ATIF_QBTC_REQUEST_DFP1 3 257# define ATIF_QBTC_REQUEST_CRT2 4 258# define ATIF_QBTC_REQUEST_LCD2 5 259# define ATIF_QBTC_REQUEST_DFP2 7 260# define ATIF_QBTC_REQUEST_DFP3 9 261# define ATIF_QBTC_REQUEST_DFP4 10 262# define ATIF_QBTC_REQUEST_DFP5 11 263# define ATIF_QBTC_REQUEST_DFP6 12 264/* error code */ 265# define ATIF_QBTC_ERROR_CODE_SUCCESS 0 266# define ATIF_QBTC_ERROR_CODE_FAILURE 1 267# define ATIF_QBTC_ERROR_CODE_DEVICE_NOT_SUPPORTED 2 268#define ATIF_FUNCTION_READY_TO_UNDOCK_NOTIFICATION 0x11 269/* ARG0: ATIF_FUNCTION_READY_TO_UNDOCK_NOTIFICATION 270 * ARG1: none 271 * OUTPUT: none 272 */ 273#define ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION 0x15 274/* ARG0: ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION 275 * ARG1: none 276 * OUTPUT: 277 * WORD - number of reported external gfx devices 278 * WORD - device structure size in bytes (excludes device size field) 279 * WORD - flags \ 280 * WORD - bus number / repeated structure 281 */ 282/* flags */ 283# define ATIF_EXTERNAL_GRAPHICS_PORT (1 << 0) 284 285/* ATPX */ 286#define ATPX_FUNCTION_VERIFY_INTERFACE 0x0 287/* ARG0: ATPX_FUNCTION_VERIFY_INTERFACE 288 * ARG1: none 289 * OUTPUT: 290 * WORD - structure size in bytes (includes size field) 291 * WORD - version 292 * DWORD - supported functions bit vector 293 */ 294/* supported functions vector */ 295# define ATPX_GET_PX_PARAMETERS_SUPPORTED (1 << 0) 296# define ATPX_POWER_CONTROL_SUPPORTED (1 << 1) 297# define ATPX_DISPLAY_MUX_CONTROL_SUPPORTED (1 << 2) 298# define ATPX_I2C_MUX_CONTROL_SUPPORTED (1 << 3) 299# define ATPX_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION_SUPPORTED (1 << 4) 300# define ATPX_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION_SUPPORTED (1 << 5) 301# define ATPX_GET_DISPLAY_CONNECTORS_MAPPING_SUPPORTED (1 << 7) 302# define ATPX_GET_DISPLAY_DETECTION_PORTS_SUPPORTED (1 << 8) 303#define ATPX_FUNCTION_GET_PX_PARAMETERS 0x1 304/* ARG0: ATPX_FUNCTION_GET_PX_PARAMETERS 305 * ARG1: none 306 * OUTPUT: 307 * WORD - structure size in bytes (includes size field) 308 * DWORD - valid flags mask 309 * DWORD - flags 310 */ 311/* flags */ 312# define ATPX_LVDS_I2C_AVAILABLE_TO_BOTH_GPUS (1 << 0) 313# define ATPX_CRT1_I2C_AVAILABLE_TO_BOTH_GPUS (1 << 1) 314# define ATPX_DVI1_I2C_AVAILABLE_TO_BOTH_GPUS (1 << 2) 315# define ATPX_CRT1_RGB_SIGNAL_MUXED (1 << 3) 316# define ATPX_TV_SIGNAL_MUXED (1 << 4) 317# define ATPX_DFP_SIGNAL_MUXED (1 << 5) 318# define ATPX_SEPARATE_MUX_FOR_I2C (1 << 6) 319# define ATPX_DYNAMIC_PX_SUPPORTED (1 << 7) 320# define ATPX_ACF_NOT_SUPPORTED (1 << 8) 321# define ATPX_FIXED_NOT_SUPPORTED (1 << 9) 322# define ATPX_DYNAMIC_DGPU_POWER_OFF_SUPPORTED (1 << 10) 323# define ATPX_DGPU_REQ_POWER_FOR_DISPLAYS (1 << 11) 324# define ATPX_DGPU_CAN_DRIVE_DISPLAYS (1 << 12) 325# define ATPX_MS_HYBRID_GFX_SUPPORTED (1 << 14) 326#define ATPX_FUNCTION_POWER_CONTROL 0x2 327/* ARG0: ATPX_FUNCTION_POWER_CONTROL 328 * ARG1: 329 * WORD - structure size in bytes (includes size field) 330 * BYTE - dGPU power state (0: power off, 1: power on) 331 * OUTPUT: none 332 */ 333#define ATPX_FUNCTION_DISPLAY_MUX_CONTROL 0x3 334/* ARG0: ATPX_FUNCTION_DISPLAY_MUX_CONTROL 335 * ARG1: 336 * WORD - structure size in bytes (includes size field) 337 * WORD - display mux control (0: iGPU, 1: dGPU) 338 * OUTPUT: none 339 */ 340# define ATPX_INTEGRATED_GPU 0 341# define ATPX_DISCRETE_GPU 1 342#define ATPX_FUNCTION_I2C_MUX_CONTROL 0x4 343/* ARG0: ATPX_FUNCTION_I2C_MUX_CONTROL 344 * ARG1: 345 * WORD - structure size in bytes (includes size field) 346 * WORD - i2c/aux/hpd mux control (0: iGPU, 1: dGPU) 347 * OUTPUT: none 348 */ 349#define ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION 0x5 350/* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION 351 * ARG1: 352 * WORD - structure size in bytes (includes size field) 353 * WORD - target gpu (0: iGPU, 1: dGPU) 354 * OUTPUT: none 355 */ 356#define ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION 0x6 357/* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION 358 * ARG1: 359 * WORD - structure size in bytes (includes size field) 360 * WORD - target gpu (0: iGPU, 1: dGPU) 361 * OUTPUT: none 362 */ 363#define ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING 0x8 364/* ARG0: ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING 365 * ARG1: none 366 * OUTPUT: 367 * WORD - number of display connectors 368 * WORD - connector structure size in bytes (excludes connector size field) 369 * BYTE - flags \ 370 * BYTE - ATIF display vector bit position } repeated 371 * BYTE - adapter id (0: iGPU, 1-n: dGPU ordered by pcie bus number) } structure 372 * WORD - connector ACPI id / 373 */ 374/* flags */ 375# define ATPX_DISPLAY_OUTPUT_SUPPORTED_BY_ADAPTER_ID_DEVICE (1 << 0) 376# define ATPX_DISPLAY_HPD_SUPPORTED_BY_ADAPTER_ID_DEVICE (1 << 1) 377# define ATPX_DISPLAY_I2C_SUPPORTED_BY_ADAPTER_ID_DEVICE (1 << 2) 378#define ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS 0x9 379/* ARG0: ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS 380 * ARG1: none 381 * OUTPUT: 382 * WORD - number of HPD/DDC ports 383 * WORD - port structure size in bytes (excludes port size field) 384 * BYTE - ATIF display vector bit position \ 385 * BYTE - hpd id } reapeated structure 386 * BYTE - ddc id / 387 * 388 * available on A+A systems only 389 */ 390/* hpd id */ 391# define ATPX_HPD_NONE 0 392# define ATPX_HPD1 1 393# define ATPX_HPD2 2 394# define ATPX_HPD3 3 395# define ATPX_HPD4 4 396# define ATPX_HPD5 5 397# define ATPX_HPD6 6 398/* ddc id */ 399# define ATPX_DDC_NONE 0 400# define ATPX_DDC1 1 401# define ATPX_DDC2 2 402# define ATPX_DDC3 3 403# define ATPX_DDC4 4 404# define ATPX_DDC5 5 405# define ATPX_DDC6 6 406# define ATPX_DDC7 7 407# define ATPX_DDC8 8 408 409/* ATCS */ 410#define ATCS_FUNCTION_VERIFY_INTERFACE 0x0 411/* ARG0: ATCS_FUNCTION_VERIFY_INTERFACE 412 * ARG1: none 413 * OUTPUT: 414 * WORD - structure size in bytes (includes size field) 415 * WORD - version 416 * DWORD - supported functions bit vector 417 */ 418/* supported functions vector */ 419# define ATCS_GET_EXTERNAL_STATE_SUPPORTED (1 << 0) 420# define ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED (1 << 1) 421# define ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED (1 << 2) 422# define ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED (1 << 3) 423#define ATCS_FUNCTION_GET_EXTERNAL_STATE 0x1 424/* ARG0: ATCS_FUNCTION_GET_EXTERNAL_STATE 425 * ARG1: none 426 * OUTPUT: 427 * WORD - structure size in bytes (includes size field) 428 * DWORD - valid flags mask 429 * DWORD - flags (0: undocked, 1: docked) 430 */ 431/* flags */ 432# define ATCS_DOCKED (1 << 0) 433#define ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST 0x2 434/* ARG0: ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST 435 * ARG1: 436 * WORD - structure size in bytes (includes size field) 437 * WORD - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) 438 * WORD - valid flags mask 439 * WORD - flags 440 * BYTE - request type 441 * BYTE - performance request 442 * OUTPUT: 443 * WORD - structure size in bytes (includes size field) 444 * BYTE - return value 445 */ 446/* flags */ 447# define ATCS_ADVERTISE_CAPS (1 << 0) 448# define ATCS_WAIT_FOR_COMPLETION (1 << 1) 449/* request type */ 450# define ATCS_PCIE_LINK_SPEED 1 451/* performance request */ 452# define ATCS_REMOVE 0 453# define ATCS_FORCE_LOW_POWER 1 454# define ATCS_PERF_LEVEL_1 2 /* PCIE Gen 1 */ 455# define ATCS_PERF_LEVEL_2 3 /* PCIE Gen 2 */ 456# define ATCS_PERF_LEVEL_3 4 /* PCIE Gen 3 */ 457/* return value */ 458# define ATCS_REQUEST_REFUSED 1 459# define ATCS_REQUEST_COMPLETE 2 460# define ATCS_REQUEST_IN_PROGRESS 3 461#define ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION 0x3 462/* ARG0: ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION 463 * ARG1: none 464 * OUTPUT: none 465 */ 466#define ATCS_FUNCTION_SET_PCIE_BUS_WIDTH 0x4 467/* ARG0: ATCS_FUNCTION_SET_PCIE_BUS_WIDTH 468 * ARG1: 469 * WORD - structure size in bytes (includes size field) 470 * WORD - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) 471 * BYTE - number of active lanes 472 * OUTPUT: 473 * WORD - structure size in bytes (includes size field) 474 * BYTE - number of active lanes 475 */ 476 477#endif 478