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 106struct atcs_pwr_shift_input { 107 u16 size; /* structure size in bytes (includes size field) */ 108 u16 dgpu_id; /* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */ 109 u8 dev_acpi_state; /* D0 = 0, D3 hot = 3 */ 110 u8 drv_state; /* 0 = operational, 1 = not operational */ 111} __packed; 112 113/* AMD hw uses four ACPI control methods: 114 * 1. ATIF 115 * ARG0: (ACPI_INTEGER) function code 116 * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes 117 * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes 118 * ATIF provides an entry point for the gfx driver to interact with the sbios. 119 * The AMD ACPI notification mechanism uses Notify (VGA, 0x81) or a custom 120 * notification. Which notification is used as indicated by the ATIF Control 121 * Method GET_SYSTEM_PARAMETERS. When the driver receives Notify (VGA, 0x81) or 122 * a custom notification it invokes ATIF Control Method GET_SYSTEM_BIOS_REQUESTS 123 * to identify pending System BIOS requests and associated parameters. For 124 * example, if one of the pending requests is DISPLAY_SWITCH_REQUEST, the driver 125 * will perform display device detection and invoke ATIF Control Method 126 * SELECT_ACTIVE_DISPLAYS. 127 * 128 * 2. ATPX 129 * ARG0: (ACPI_INTEGER) function code 130 * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes 131 * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes 132 * ATPX methods are used on PowerXpress systems to handle mux switching and 133 * discrete GPU power control. 134 * 135 * 3. ATRM 136 * ARG0: (ACPI_INTEGER) offset of vbios rom data 137 * ARG1: (ACPI_BUFFER) size of the buffer to fill (up to 4K). 138 * OUTPUT: (ACPI_BUFFER) output buffer 139 * ATRM provides an interfacess to access the discrete GPU vbios image on 140 * PowerXpress systems with multiple GPUs. 141 * 142 * 4. ATCS 143 * ARG0: (ACPI_INTEGER) function code 144 * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes 145 * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes 146 * ATCS provides an interface to AMD chipset specific functionality. 147 * 148 */ 149/* ATIF */ 150#define ATIF_FUNCTION_VERIFY_INTERFACE 0x0 151/* ARG0: ATIF_FUNCTION_VERIFY_INTERFACE 152 * ARG1: none 153 * OUTPUT: 154 * WORD - structure size in bytes (includes size field) 155 * WORD - version 156 * DWORD - supported notifications mask 157 * DWORD - supported functions bit vector 158 */ 159/* Notifications mask */ 160# define ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED (1 << 2) 161# define ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED (1 << 3) 162# define ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED (1 << 4) 163# define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED (1 << 7) 164# define ATIF_DGPU_DISPLAY_EVENT_SUPPORTED (1 << 8) 165# define ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST_SUPPORTED (1 << 12) 166/* supported functions vector */ 167# define ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED (1 << 0) 168# define ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED (1 << 1) 169# define ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED (1 << 12) 170# define ATIF_QUERY_BACKLIGHT_TRANSFER_CHARACTERISTICS_SUPPORTED (1 << 15) 171# define ATIF_READY_TO_UNDOCK_NOTIFICATION_SUPPORTED (1 << 16) 172# define ATIF_GET_EXTERNAL_GPU_INFORMATION_SUPPORTED (1 << 20) 173#define ATIF_FUNCTION_GET_SYSTEM_PARAMETERS 0x1 174/* ARG0: ATIF_FUNCTION_GET_SYSTEM_PARAMETERS 175 * ARG1: none 176 * OUTPUT: 177 * WORD - structure size in bytes (includes size field) 178 * DWORD - valid flags mask 179 * DWORD - flags 180 * 181 * OR 182 * 183 * WORD - structure size in bytes (includes size field) 184 * DWORD - valid flags mask 185 * DWORD - flags 186 * BYTE - notify command code 187 * 188 * flags 189 * bits 1:0: 190 * 0 - Notify(VGA, 0x81) is not used for notification 191 * 1 - Notify(VGA, 0x81) is used for notification 192 * 2 - Notify(VGA, n) is used for notification where 193 * n (0xd0-0xd9) is specified in notify command code. 194 * bit 2: 195 * 1 - lid changes not reported though int10 196 * bit 3: 197 * 1 - system bios controls overclocking 198 * bit 4: 199 * 1 - enable overclocking 200 */ 201#define ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS 0x2 202/* ARG0: ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS 203 * ARG1: none 204 * OUTPUT: 205 * WORD - structure size in bytes (includes size field) 206 * DWORD - pending sbios requests 207 * BYTE - reserved (all zeroes) 208 * BYTE - thermal state: target gfx controller 209 * BYTE - thermal state: state id (0: exit state, non-0: state) 210 * BYTE - forced power state: target gfx controller 211 * BYTE - forced power state: state id (0: forced state, non-0: state) 212 * BYTE - system power source 213 * BYTE - panel backlight level (0-255) 214 * BYTE - GPU package power limit: target gfx controller 215 * DWORD - GPU package power limit: value (24:8 fractional format, Watts) 216 */ 217/* pending sbios requests */ 218# define ATIF_THERMAL_STATE_CHANGE_REQUEST (1 << 2) 219# define ATIF_FORCED_POWER_STATE_CHANGE_REQUEST (1 << 3) 220# define ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST (1 << 4) 221# define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST (1 << 7) 222# define ATIF_DGPU_DISPLAY_EVENT (1 << 8) 223# define ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST (1 << 12) 224/* target gfx controller */ 225# define ATIF_TARGET_GFX_SINGLE 0 226# define ATIF_TARGET_GFX_PX_IGPU 1 227# define ATIF_TARGET_GFX_PX_DGPU 2 228/* system power source */ 229# define ATIF_POWER_SOURCE_AC 1 230# define ATIF_POWER_SOURCE_DC 2 231# define ATIF_POWER_SOURCE_RESTRICTED_AC_1 3 232# define ATIF_POWER_SOURCE_RESTRICTED_AC_2 4 233#define ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION 0xD 234/* ARG0: ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION 235 * ARG1: 236 * WORD - structure size in bytes (includes size field) 237 * WORD - gfx controller id 238 * BYTE - current temperature (degress Celsius) 239 * OUTPUT: none 240 */ 241#define ATIF_FUNCTION_QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS 0x10 242/* ARG0: ATIF_FUNCTION_QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS 243 * ARG1: 244 * WORD - structure size in bytes (includes size field) 245 * BYTE - requested display 246 * OUTPUT: 247 * WORD - structure size in bytes (includes size field) 248 * WORD - flags (currently all 16 bits are reserved) 249 * BYTE - error code (on failure, disregard all below fields) 250 * BYTE - AC level (default brightness in percent when machine has full power) 251 * BYTE - DC level (default brightness in percent when machine is on battery) 252 * BYTE - min input signal, in range 0-255, corresponding to 0% backlight 253 * BYTE - max input signal, in range 0-255, corresponding to 100% backlight 254 * BYTE - number of reported data points 255 * BYTE - luminance level in percent \ repeated structure 256 * BYTE - input signal in range 0-255 / does not have entries for 0% and 100% 257 */ 258/* requested display */ 259# define ATIF_QBTC_REQUEST_LCD1 0 260# define ATIF_QBTC_REQUEST_CRT1 1 261# define ATIF_QBTC_REQUEST_DFP1 3 262# define ATIF_QBTC_REQUEST_CRT2 4 263# define ATIF_QBTC_REQUEST_LCD2 5 264# define ATIF_QBTC_REQUEST_DFP2 7 265# define ATIF_QBTC_REQUEST_DFP3 9 266# define ATIF_QBTC_REQUEST_DFP4 10 267# define ATIF_QBTC_REQUEST_DFP5 11 268# define ATIF_QBTC_REQUEST_DFP6 12 269/* error code */ 270# define ATIF_QBTC_ERROR_CODE_SUCCESS 0 271# define ATIF_QBTC_ERROR_CODE_FAILURE 1 272# define ATIF_QBTC_ERROR_CODE_DEVICE_NOT_SUPPORTED 2 273#define ATIF_FUNCTION_READY_TO_UNDOCK_NOTIFICATION 0x11 274/* ARG0: ATIF_FUNCTION_READY_TO_UNDOCK_NOTIFICATION 275 * ARG1: none 276 * OUTPUT: none 277 */ 278#define ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION 0x15 279/* ARG0: ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION 280 * ARG1: none 281 * OUTPUT: 282 * WORD - number of reported external gfx devices 283 * WORD - device structure size in bytes (excludes device size field) 284 * WORD - flags \ 285 * WORD - bus number / repeated structure 286 */ 287/* flags */ 288# define ATIF_EXTERNAL_GRAPHICS_PORT (1 << 0) 289 290/* ATPX */ 291#define ATPX_FUNCTION_VERIFY_INTERFACE 0x0 292/* ARG0: ATPX_FUNCTION_VERIFY_INTERFACE 293 * ARG1: none 294 * OUTPUT: 295 * WORD - structure size in bytes (includes size field) 296 * WORD - version 297 * DWORD - supported functions bit vector 298 */ 299/* supported functions vector */ 300# define ATPX_GET_PX_PARAMETERS_SUPPORTED (1 << 0) 301# define ATPX_POWER_CONTROL_SUPPORTED (1 << 1) 302# define ATPX_DISPLAY_MUX_CONTROL_SUPPORTED (1 << 2) 303# define ATPX_I2C_MUX_CONTROL_SUPPORTED (1 << 3) 304# define ATPX_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION_SUPPORTED (1 << 4) 305# define ATPX_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION_SUPPORTED (1 << 5) 306# define ATPX_GET_DISPLAY_CONNECTORS_MAPPING_SUPPORTED (1 << 7) 307# define ATPX_GET_DISPLAY_DETECTION_PORTS_SUPPORTED (1 << 8) 308#define ATPX_FUNCTION_GET_PX_PARAMETERS 0x1 309/* ARG0: ATPX_FUNCTION_GET_PX_PARAMETERS 310 * ARG1: none 311 * OUTPUT: 312 * WORD - structure size in bytes (includes size field) 313 * DWORD - valid flags mask 314 * DWORD - flags 315 */ 316/* flags */ 317# define ATPX_LVDS_I2C_AVAILABLE_TO_BOTH_GPUS (1 << 0) 318# define ATPX_CRT1_I2C_AVAILABLE_TO_BOTH_GPUS (1 << 1) 319# define ATPX_DVI1_I2C_AVAILABLE_TO_BOTH_GPUS (1 << 2) 320# define ATPX_CRT1_RGB_SIGNAL_MUXED (1 << 3) 321# define ATPX_TV_SIGNAL_MUXED (1 << 4) 322# define ATPX_DFP_SIGNAL_MUXED (1 << 5) 323# define ATPX_SEPARATE_MUX_FOR_I2C (1 << 6) 324# define ATPX_DYNAMIC_PX_SUPPORTED (1 << 7) 325# define ATPX_ACF_NOT_SUPPORTED (1 << 8) 326# define ATPX_FIXED_NOT_SUPPORTED (1 << 9) 327# define ATPX_DYNAMIC_DGPU_POWER_OFF_SUPPORTED (1 << 10) 328# define ATPX_DGPU_REQ_POWER_FOR_DISPLAYS (1 << 11) 329# define ATPX_DGPU_CAN_DRIVE_DISPLAYS (1 << 12) 330# define ATPX_MS_HYBRID_GFX_SUPPORTED (1 << 14) 331#define ATPX_FUNCTION_POWER_CONTROL 0x2 332/* ARG0: ATPX_FUNCTION_POWER_CONTROL 333 * ARG1: 334 * WORD - structure size in bytes (includes size field) 335 * BYTE - dGPU power state (0: power off, 1: power on) 336 * OUTPUT: none 337 */ 338#define ATPX_FUNCTION_DISPLAY_MUX_CONTROL 0x3 339/* ARG0: ATPX_FUNCTION_DISPLAY_MUX_CONTROL 340 * ARG1: 341 * WORD - structure size in bytes (includes size field) 342 * WORD - display mux control (0: iGPU, 1: dGPU) 343 * OUTPUT: none 344 */ 345# define ATPX_INTEGRATED_GPU 0 346# define ATPX_DISCRETE_GPU 1 347#define ATPX_FUNCTION_I2C_MUX_CONTROL 0x4 348/* ARG0: ATPX_FUNCTION_I2C_MUX_CONTROL 349 * ARG1: 350 * WORD - structure size in bytes (includes size field) 351 * WORD - i2c/aux/hpd mux control (0: iGPU, 1: dGPU) 352 * OUTPUT: none 353 */ 354#define ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION 0x5 355/* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_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_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION 0x6 362/* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION 363 * ARG1: 364 * WORD - structure size in bytes (includes size field) 365 * WORD - target gpu (0: iGPU, 1: dGPU) 366 * OUTPUT: none 367 */ 368#define ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING 0x8 369/* ARG0: ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING 370 * ARG1: none 371 * OUTPUT: 372 * WORD - number of display connectors 373 * WORD - connector structure size in bytes (excludes connector size field) 374 * BYTE - flags \ 375 * BYTE - ATIF display vector bit position } repeated 376 * BYTE - adapter id (0: iGPU, 1-n: dGPU ordered by pcie bus number) } structure 377 * WORD - connector ACPI id / 378 */ 379/* flags */ 380# define ATPX_DISPLAY_OUTPUT_SUPPORTED_BY_ADAPTER_ID_DEVICE (1 << 0) 381# define ATPX_DISPLAY_HPD_SUPPORTED_BY_ADAPTER_ID_DEVICE (1 << 1) 382# define ATPX_DISPLAY_I2C_SUPPORTED_BY_ADAPTER_ID_DEVICE (1 << 2) 383#define ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS 0x9 384/* ARG0: ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS 385 * ARG1: none 386 * OUTPUT: 387 * WORD - number of HPD/DDC ports 388 * WORD - port structure size in bytes (excludes port size field) 389 * BYTE - ATIF display vector bit position \ 390 * BYTE - hpd id } reapeated structure 391 * BYTE - ddc id / 392 * 393 * available on A+A systems only 394 */ 395/* hpd id */ 396# define ATPX_HPD_NONE 0 397# define ATPX_HPD1 1 398# define ATPX_HPD2 2 399# define ATPX_HPD3 3 400# define ATPX_HPD4 4 401# define ATPX_HPD5 5 402# define ATPX_HPD6 6 403/* ddc id */ 404# define ATPX_DDC_NONE 0 405# define ATPX_DDC1 1 406# define ATPX_DDC2 2 407# define ATPX_DDC3 3 408# define ATPX_DDC4 4 409# define ATPX_DDC5 5 410# define ATPX_DDC6 6 411# define ATPX_DDC7 7 412# define ATPX_DDC8 8 413 414/* ATCS */ 415#define ATCS_FUNCTION_VERIFY_INTERFACE 0x0 416/* ARG0: ATCS_FUNCTION_VERIFY_INTERFACE 417 * ARG1: none 418 * OUTPUT: 419 * WORD - structure size in bytes (includes size field) 420 * WORD - version 421 * DWORD - supported functions bit vector 422 */ 423/* supported functions vector */ 424# define ATCS_GET_EXTERNAL_STATE_SUPPORTED (1 << 0) 425# define ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED (1 << 1) 426# define ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED (1 << 2) 427# define ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED (1 << 3) 428# define ATCS_SET_POWER_SHIFT_CONTROL_SUPPORTED (1 << 7) 429#define ATCS_FUNCTION_GET_EXTERNAL_STATE 0x1 430/* ARG0: ATCS_FUNCTION_GET_EXTERNAL_STATE 431 * ARG1: none 432 * OUTPUT: 433 * WORD - structure size in bytes (includes size field) 434 * DWORD - valid flags mask 435 * DWORD - flags (0: undocked, 1: docked) 436 */ 437/* flags */ 438# define ATCS_DOCKED (1 << 0) 439#define ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST 0x2 440/* ARG0: ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST 441 * ARG1: 442 * WORD - structure size in bytes (includes size field) 443 * WORD - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) 444 * WORD - valid flags mask 445 * WORD - flags 446 * BYTE - request type 447 * BYTE - performance request 448 * OUTPUT: 449 * WORD - structure size in bytes (includes size field) 450 * BYTE - return value 451 */ 452/* flags */ 453# define ATCS_ADVERTISE_CAPS (1 << 0) 454# define ATCS_WAIT_FOR_COMPLETION (1 << 1) 455/* request type */ 456# define ATCS_PCIE_LINK_SPEED 1 457/* performance request */ 458# define ATCS_REMOVE 0 459# define ATCS_FORCE_LOW_POWER 1 460# define ATCS_PERF_LEVEL_1 2 /* PCIE Gen 1 */ 461# define ATCS_PERF_LEVEL_2 3 /* PCIE Gen 2 */ 462# define ATCS_PERF_LEVEL_3 4 /* PCIE Gen 3 */ 463/* return value */ 464# define ATCS_REQUEST_REFUSED 1 465# define ATCS_REQUEST_COMPLETE 2 466# define ATCS_REQUEST_IN_PROGRESS 3 467#define ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION 0x3 468/* ARG0: ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION 469 * ARG1: none 470 * OUTPUT: none 471 */ 472#define ATCS_FUNCTION_SET_PCIE_BUS_WIDTH 0x4 473/* ARG0: ATCS_FUNCTION_SET_PCIE_BUS_WIDTH 474 * ARG1: 475 * WORD - structure size in bytes (includes size field) 476 * WORD - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) 477 * BYTE - number of active lanes 478 * OUTPUT: 479 * WORD - structure size in bytes (includes size field) 480 * BYTE - number of active lanes 481 */ 482 483#define ATCS_FUNCTION_POWER_SHIFT_CONTROL 0x8 484/* ARG0: ATCS_FUNCTION_POWER_SHIFT_CONTROL 485 * ARG1: 486 * WORD - structure size in bytes (includes size field) 487 * WORD - dGPU id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) 488 * BYTE - Device ACPI state 489 * BYTE - Driver state 490 * OUTPUT: none 491 */ 492 493#endif 494