drivers/gpu/drm/amd/include/amd_acpi.h

   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
  29 struct 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
  36 struct 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
  43 struct 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
  55 struct 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
  62 struct atif_qbtc_data_point {
  63         u8 luminance;           /* luminance in percent */
  64         u8 ipnut_signal;        /* input signal in range 0-255 */
  65 } __packed;
  66
  67 struct 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
  84 struct 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
  92 struct 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
 101 struct 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