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