drivers/gpu/drm/amd/amdgpu/amdgpu_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 AMDGPU_ACPI_H
  25 #define AMDGPU_ACPI_H
  26
  27 struct amdgpu_device;
  28 struct acpi_bus_event;
  29
  30 int amdgpu_atif_handler(struct amdgpu_device *adev,
  31                 struct acpi_bus_event *event);
  32
  33 /* AMD hw uses four ACPI control methods:
  34  * 1. ATIF
  35  * ARG0: (ACPI_INTEGER) function code
  36  * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes
  37  * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes
  38  * ATIF provides an entry point for the gfx driver to interact with the sbios.
  39  * The AMD ACPI notification mechanism uses Notify (VGA, 0x81) or a custom
  40  * notification. Which notification is used as indicated by the ATIF Control
  41  * Method GET_SYSTEM_PARAMETERS. When the driver receives Notify (VGA, 0x81) or
  42  * a custom notification it invokes ATIF Control Method GET_SYSTEM_BIOS_REQUESTS
  43  * to identify pending System BIOS requests and associated parameters. For
  44  * example, if one of the pending requests is DISPLAY_SWITCH_REQUEST, the driver
  45  * will perform display device detection and invoke ATIF Control Method
  46  * SELECT_ACTIVE_DISPLAYS.
  47  *
  48  * 2. ATPX
  49  * ARG0: (ACPI_INTEGER) function code
  50  * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes
  51  * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes
  52  * ATPX methods are used on PowerXpress systems to handle mux switching and
  53  * discrete GPU power control.
  54  *
  55  * 3. ATRM
  56  * ARG0: (ACPI_INTEGER) offset of vbios rom data
  57  * ARG1: (ACPI_BUFFER) size of the buffer to fill (up to 4K).
  58  * OUTPUT: (ACPI_BUFFER) output buffer
  59  * ATRM provides an interfacess to access the discrete GPU vbios image on
  60  * PowerXpress systems with multiple GPUs.
  61  *
  62  * 4. ATCS
  63  * ARG0: (ACPI_INTEGER) function code
  64  * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes
  65  * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes
  66  * ATCS provides an interface to AMD chipset specific functionality.
  67  *
  68  */
  69 /* ATIF */
  70 #define ATIF_FUNCTION_VERIFY_INTERFACE                             0x0
  71 /* ARG0: ATIF_FUNCTION_VERIFY_INTERFACE
  72  * ARG1: none
  73  * OUTPUT:
  74  * WORD  - structure size in bytes (includes size field)
  75  * WORD  - version
  76  * DWORD - supported notifications mask
  77  * DWORD - supported functions bit vector
  78  */
  79 /* Notifications mask */
  80 #       define ATIF_DISPLAY_SWITCH_REQUEST_SUPPORTED               (1 << 0)
  81 #       define ATIF_EXPANSION_MODE_CHANGE_REQUEST_SUPPORTED        (1 << 1)
  82 #       define ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED         (1 << 2)
  83 #       define ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED    (1 << 3)
  84 #       define ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED   (1 << 4)
  85 #       define ATIF_DISPLAY_CONF_CHANGE_REQUEST_SUPPORTED          (1 << 5)
  86 #       define ATIF_PX_GFX_SWITCH_REQUEST_SUPPORTED                (1 << 6)
  87 #       define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED      (1 << 7)
  88 #       define ATIF_DGPU_DISPLAY_EVENT_SUPPORTED                   (1 << 8)
  89 /* supported functions vector */
  90 #       define ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED               (1 << 0)
  91 #       define ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED            (1 << 1)
  92 #       define ATIF_SELECT_ACTIVE_DISPLAYS_SUPPORTED              (1 << 2)
  93 #       define ATIF_GET_LID_STATE_SUPPORTED                       (1 << 3)
  94 #       define ATIF_GET_TV_STANDARD_FROM_CMOS_SUPPORTED           (1 << 4)
  95 #       define ATIF_SET_TV_STANDARD_IN_CMOS_SUPPORTED             (1 << 5)
  96 #       define ATIF_GET_PANEL_EXPANSION_MODE_FROM_CMOS_SUPPORTED  (1 << 6)
  97 #       define ATIF_SET_PANEL_EXPANSION_MODE_IN_CMOS_SUPPORTED    (1 << 7)
  98 #       define ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED     (1 << 12)
  99 #       define ATIF_GET_GRAPHICS_DEVICE_TYPES_SUPPORTED           (1 << 14)
 100 #define ATIF_FUNCTION_GET_SYSTEM_PARAMETERS                        0x1
 101 /* ARG0: ATIF_FUNCTION_GET_SYSTEM_PARAMETERS
 102  * ARG1: none
 103  * OUTPUT:
 104  * WORD  - structure size in bytes (includes size field)
 105  * DWORD - valid flags mask
 106  * DWORD - flags
 107  *
 108  * OR
 109  *
 110  * WORD  - structure size in bytes (includes size field)
 111  * DWORD - valid flags mask
 112  * DWORD - flags
 113  * BYTE  - notify command code
 114  *
 115  * flags
 116  * bits 1:0:
 117  * 0 - Notify(VGA, 0x81) is not used for notification
 118  * 1 - Notify(VGA, 0x81) is used for notification
 119  * 2 - Notify(VGA, n) is used for notification where
 120  * n (0xd0-0xd9) is specified in notify command code.
 121  * bit 2:
 122  * 1 - lid changes not reported though int10
 123  */
 124 #define ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS                     0x2
 125 /* ARG0: ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS
 126  * ARG1: none
 127  * OUTPUT:
 128  * WORD  - structure size in bytes (includes size field)
 129  * DWORD - pending sbios requests
 130  * BYTE  - panel expansion mode
 131  * BYTE  - thermal state: target gfx controller
 132  * BYTE  - thermal state: state id (0: exit state, non-0: state)
 133  * BYTE  - forced power state: target gfx controller
 134  * BYTE  - forced power state: state id
 135  * BYTE  - system power source
 136  * BYTE  - panel backlight level (0-255)
 137  */
 138 /* pending sbios requests */
 139 #       define ATIF_DISPLAY_SWITCH_REQUEST                         (1 << 0)
 140 #       define ATIF_EXPANSION_MODE_CHANGE_REQUEST                  (1 << 1)
 141 #       define ATIF_THERMAL_STATE_CHANGE_REQUEST                   (1 << 2)
 142 #       define ATIF_FORCED_POWER_STATE_CHANGE_REQUEST              (1 << 3)
 143 #       define ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST             (1 << 4)
 144 #       define ATIF_DISPLAY_CONF_CHANGE_REQUEST                    (1 << 5)
 145 #       define ATIF_PX_GFX_SWITCH_REQUEST                          (1 << 6)
 146 #       define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST                (1 << 7)
 147 #       define ATIF_DGPU_DISPLAY_EVENT                             (1 << 8)
 148 /* panel expansion mode */
 149 #       define ATIF_PANEL_EXPANSION_DISABLE                        0
 150 #       define ATIF_PANEL_EXPANSION_FULL                           1
 151 #       define ATIF_PANEL_EXPANSION_ASPECT                         2
 152 /* target gfx controller */
 153 #       define ATIF_TARGET_GFX_SINGLE                              0
 154 #       define ATIF_TARGET_GFX_PX_IGPU                             1
 155 #       define ATIF_TARGET_GFX_PX_DGPU                             2
 156 /* system power source */
 157 #       define ATIF_POWER_SOURCE_AC                                1
 158 #       define ATIF_POWER_SOURCE_DC                                2
 159 #       define ATIF_POWER_SOURCE_RESTRICTED_AC_1                   3
 160 #       define ATIF_POWER_SOURCE_RESTRICTED_AC_2                   4
 161 #define ATIF_FUNCTION_SELECT_ACTIVE_DISPLAYS                       0x3
 162 /* ARG0: ATIF_FUNCTION_SELECT_ACTIVE_DISPLAYS
 163  * ARG1:
 164  * WORD  - structure size in bytes (includes size field)
 165  * WORD  - selected displays
 166  * WORD  - connected displays
 167  * OUTPUT:
 168  * WORD  - structure size in bytes (includes size field)
 169  * WORD  - selected displays
 170  */
 171 #       define ATIF_LCD1                                           (1 << 0)
 172 #       define ATIF_CRT1                                           (1 << 1)
 173 #       define ATIF_TV                                             (1 << 2)
 174 #       define ATIF_DFP1                                           (1 << 3)
 175 #       define ATIF_CRT2                                           (1 << 4)
 176 #       define ATIF_LCD2                                           (1 << 5)
 177 #       define ATIF_DFP2                                           (1 << 7)
 178 #       define ATIF_CV                                             (1 << 8)
 179 #       define ATIF_DFP3                                           (1 << 9)
 180 #       define ATIF_DFP4                                           (1 << 10)
 181 #       define ATIF_DFP5                                           (1 << 11)
 182 #       define ATIF_DFP6                                           (1 << 12)
 183 #define ATIF_FUNCTION_GET_LID_STATE                                0x4
 184 /* ARG0: ATIF_FUNCTION_GET_LID_STATE
 185  * ARG1: none
 186  * OUTPUT:
 187  * WORD  - structure size in bytes (includes size field)
 188  * BYTE  - lid state (0: open, 1: closed)
 189  *
 190  * GET_LID_STATE only works at boot and resume, for general lid
 191  * status, use the kernel provided status
 192  */
 193 #define ATIF_FUNCTION_GET_TV_STANDARD_FROM_CMOS                    0x5
 194 /* ARG0: ATIF_FUNCTION_GET_TV_STANDARD_FROM_CMOS
 195  * ARG1: none
 196  * OUTPUT:
 197  * WORD  - structure size in bytes (includes size field)
 198  * BYTE  - 0
 199  * BYTE  - TV standard
 200  */
 201 #       define ATIF_TV_STD_NTSC                                    0
 202 #       define ATIF_TV_STD_PAL                                     1
 203 #       define ATIF_TV_STD_PALM                                    2
 204 #       define ATIF_TV_STD_PAL60                                   3
 205 #       define ATIF_TV_STD_NTSCJ                                   4
 206 #       define ATIF_TV_STD_PALCN                                   5
 207 #       define ATIF_TV_STD_PALN                                    6
 208 #       define ATIF_TV_STD_SCART_RGB                               9
 209 #define ATIF_FUNCTION_SET_TV_STANDARD_IN_CMOS                      0x6
 210 /* ARG0: ATIF_FUNCTION_SET_TV_STANDARD_IN_CMOS
 211  * ARG1:
 212  * WORD  - structure size in bytes (includes size field)
 213  * BYTE  - 0
 214  * BYTE  - TV standard
 215  * OUTPUT: none
 216  */
 217 #define ATIF_FUNCTION_GET_PANEL_EXPANSION_MODE_FROM_CMOS           0x7
 218 /* ARG0: ATIF_FUNCTION_GET_PANEL_EXPANSION_MODE_FROM_CMOS
 219  * ARG1: none
 220  * OUTPUT:
 221  * WORD  - structure size in bytes (includes size field)
 222  * BYTE  - panel expansion mode
 223  */
 224 #define ATIF_FUNCTION_SET_PANEL_EXPANSION_MODE_IN_CMOS             0x8
 225 /* ARG0: ATIF_FUNCTION_SET_PANEL_EXPANSION_MODE_IN_CMOS
 226  * ARG1:
 227  * WORD  - structure size in bytes (includes size field)
 228  * BYTE  - panel expansion mode
 229  * OUTPUT: none
 230  */
 231 #define ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION              0xD
 232 /* ARG0: ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION
 233  * ARG1:
 234  * WORD  - structure size in bytes (includes size field)
 235  * WORD  - gfx controller id
 236  * BYTE  - current temperature (degress Celsius)
 237  * OUTPUT: none
 238  */
 239 #define ATIF_FUNCTION_GET_GRAPHICS_DEVICE_TYPES                    0xF
 240 /* ARG0: ATIF_FUNCTION_GET_GRAPHICS_DEVICE_TYPES
 241  * ARG1: none
 242  * OUTPUT:
 243  * WORD  - number of gfx devices
 244  * WORD  - device structure size in bytes (excludes device size field)
 245  * DWORD - flags         \
 246  * WORD  - bus number     } repeated structure
 247  * WORD  - device number /
 248  */
 249 /* flags */
 250 #       define ATIF_PX_REMOVABLE_GRAPHICS_DEVICE                   (1 << 0)
 251 #       define ATIF_XGP_PORT                                       (1 << 1)
 252 #       define ATIF_VGA_ENABLED_GRAPHICS_DEVICE                    (1 << 2)
 253 #       define ATIF_XGP_PORT_IN_DOCK                               (1 << 3)
 254
 255 /* ATPX */
 256 #define ATPX_FUNCTION_VERIFY_INTERFACE                             0x0
 257 /* ARG0: ATPX_FUNCTION_VERIFY_INTERFACE
 258  * ARG1: none
 259  * OUTPUT:
 260  * WORD  - structure size in bytes (includes size field)
 261  * WORD  - version
 262  * DWORD - supported functions bit vector
 263  */
 264 /* supported functions vector */
 265 #       define ATPX_GET_PX_PARAMETERS_SUPPORTED                    (1 << 0)
 266 #       define ATPX_POWER_CONTROL_SUPPORTED                        (1 << 1)
 267 #       define ATPX_DISPLAY_MUX_CONTROL_SUPPORTED                  (1 << 2)
 268 #       define ATPX_I2C_MUX_CONTROL_SUPPORTED                      (1 << 3)
 269 #       define ATPX_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION_SUPPORTED (1 << 4)
 270 #       define ATPX_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION_SUPPORTED   (1 << 5)
 271 #       define ATPX_GET_DISPLAY_CONNECTORS_MAPPING_SUPPORTED       (1 << 7)
 272 #       define ATPX_GET_DISPLAY_DETECTION_PORTS_SUPPORTED          (1 << 8)
 273 #define ATPX_FUNCTION_GET_PX_PARAMETERS                            0x1
 274 /* ARG0: ATPX_FUNCTION_GET_PX_PARAMETERS
 275  * ARG1: none
 276  * OUTPUT:
 277  * WORD  - structure size in bytes (includes size field)
 278  * DWORD - valid flags mask
 279  * DWORD - flags
 280  */
 281 /* flags */
 282 #       define ATPX_LVDS_I2C_AVAILABLE_TO_BOTH_GPUS                (1 << 0)
 283 #       define ATPX_CRT1_I2C_AVAILABLE_TO_BOTH_GPUS                (1 << 1)
 284 #       define ATPX_DVI1_I2C_AVAILABLE_TO_BOTH_GPUS                (1 << 2)
 285 #       define ATPX_CRT1_RGB_SIGNAL_MUXED                          (1 << 3)
 286 #       define ATPX_TV_SIGNAL_MUXED                                (1 << 4)
 287 #       define ATPX_DFP_SIGNAL_MUXED                               (1 << 5)
 288 #       define ATPX_SEPARATE_MUX_FOR_I2C                           (1 << 6)
 289 #       define ATPX_DYNAMIC_PX_SUPPORTED                           (1 << 7)
 290 #       define ATPX_ACF_NOT_SUPPORTED                              (1 << 8)
 291 #       define ATPX_FIXED_NOT_SUPPORTED                            (1 << 9)
 292 #       define ATPX_DYNAMIC_DGPU_POWER_OFF_SUPPORTED               (1 << 10)
 293 #       define ATPX_DGPU_REQ_POWER_FOR_DISPLAYS                    (1 << 11)
 294 #define ATPX_FUNCTION_POWER_CONTROL                                0x2
 295 /* ARG0: ATPX_FUNCTION_POWER_CONTROL
 296  * ARG1:
 297  * WORD  - structure size in bytes (includes size field)
 298  * BYTE  - dGPU power state (0: power off, 1: power on)
 299  * OUTPUT: none
 300  */
 301 #define ATPX_FUNCTION_DISPLAY_MUX_CONTROL                          0x3
 302 /* ARG0: ATPX_FUNCTION_DISPLAY_MUX_CONTROL
 303  * ARG1:
 304  * WORD  - structure size in bytes (includes size field)
 305  * WORD  - display mux control (0: iGPU, 1: dGPU)
 306  * OUTPUT: none
 307  */
 308 #       define ATPX_INTEGRATED_GPU                                 0
 309 #       define ATPX_DISCRETE_GPU                                   1
 310 #define ATPX_FUNCTION_I2C_MUX_CONTROL                              0x4
 311 /* ARG0: ATPX_FUNCTION_I2C_MUX_CONTROL
 312  * ARG1:
 313  * WORD  - structure size in bytes (includes size field)
 314  * WORD  - i2c/aux/hpd mux control (0: iGPU, 1: dGPU)
 315  * OUTPUT: none
 316  */
 317 #define ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION    0x5
 318 /* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION
 319  * ARG1:
 320  * WORD  - structure size in bytes (includes size field)
 321  * WORD  - target gpu (0: iGPU, 1: dGPU)
 322  * OUTPUT: none
 323  */
 324 #define ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION      0x6
 325 /* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION
 326  * ARG1:
 327  * WORD  - structure size in bytes (includes size field)
 328  * WORD  - target gpu (0: iGPU, 1: dGPU)
 329  * OUTPUT: none
 330  */
 331 #define ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING               0x8
 332 /* ARG0: ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING
 333  * ARG1: none
 334  * OUTPUT:
 335  * WORD  - number of display connectors
 336  * WORD  - connector structure size in bytes (excludes connector size field)
 337  * BYTE  - flags                                                     \
 338  * BYTE  - ATIF display vector bit position                           } repeated
 339  * BYTE  - adapter id (0: iGPU, 1-n: dGPU ordered by pcie bus number) } structure
 340  * WORD  - connector ACPI id                                         /
 341  */
 342 /* flags */
 343 #       define ATPX_DISPLAY_OUTPUT_SUPPORTED_BY_ADAPTER_ID_DEVICE  (1 << 0)
 344 #       define ATPX_DISPLAY_HPD_SUPPORTED_BY_ADAPTER_ID_DEVICE     (1 << 1)
 345 #       define ATPX_DISPLAY_I2C_SUPPORTED_BY_ADAPTER_ID_DEVICE     (1 << 2)
 346 #define ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS                  0x9
 347 /* ARG0: ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS
 348  * ARG1: none
 349  * OUTPUT:
 350  * WORD  - number of HPD/DDC ports
 351  * WORD  - port structure size in bytes (excludes port size field)
 352  * BYTE  - ATIF display vector bit position \
 353  * BYTE  - hpd id                            } reapeated structure
 354  * BYTE  - ddc id                           /
 355  *
 356  * available on A+A systems only
 357  */
 358 /* hpd id */
 359 #       define ATPX_HPD_NONE                                       0
 360 #       define ATPX_HPD1                                           1
 361 #       define ATPX_HPD2                                           2
 362 #       define ATPX_HPD3                                           3
 363 #       define ATPX_HPD4                                           4
 364 #       define ATPX_HPD5                                           5
 365 #       define ATPX_HPD6                                           6
 366 /* ddc id */
 367 #       define ATPX_DDC_NONE                                       0
 368 #       define ATPX_DDC1                                           1
 369 #       define ATPX_DDC2                                           2
 370 #       define ATPX_DDC3                                           3
 371 #       define ATPX_DDC4                                           4
 372 #       define ATPX_DDC5                                           5
 373 #       define ATPX_DDC6                                           6
 374 #       define ATPX_DDC7                                           7
 375 #       define ATPX_DDC8                                           8
 376
 377 /* ATCS */
 378 #define ATCS_FUNCTION_VERIFY_INTERFACE                             0x0
 379 /* ARG0: ATCS_FUNCTION_VERIFY_INTERFACE
 380  * ARG1: none
 381  * OUTPUT:
 382  * WORD  - structure size in bytes (includes size field)
 383  * WORD  - version
 384  * DWORD - supported functions bit vector
 385  */
 386 /* supported functions vector */
 387 #       define ATCS_GET_EXTERNAL_STATE_SUPPORTED                   (1 << 0)
 388 #       define ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED             (1 << 1)
 389 #       define ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED       (1 << 2)
 390 #       define ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED                   (1 << 3)
 391 #define ATCS_FUNCTION_GET_EXTERNAL_STATE                           0x1
 392 /* ARG0: ATCS_FUNCTION_GET_EXTERNAL_STATE
 393  * ARG1: none
 394  * OUTPUT:
 395  * WORD  - structure size in bytes (includes size field)
 396  * DWORD - valid flags mask
 397  * DWORD - flags (0: undocked, 1: docked)
 398  */
 399 /* flags */
 400 #       define ATCS_DOCKED                                         (1 << 0)
 401 #define ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST                     0x2
 402 /* ARG0: ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST
 403  * ARG1:
 404  * WORD  - structure size in bytes (includes size field)
 405  * WORD  - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num)
 406  * WORD  - valid flags mask
 407  * WORD  - flags
 408  * BYTE  - request type
 409  * BYTE  - performance request
 410  * OUTPUT:
 411  * WORD  - structure size in bytes (includes size field)
 412  * BYTE  - return value
 413  */
 414 /* flags */
 415 #       define ATCS_ADVERTISE_CAPS                                 (1 << 0)
 416 #       define ATCS_WAIT_FOR_COMPLETION                            (1 << 1)
 417 /* request type */
 418 #       define ATCS_PCIE_LINK_SPEED                                1
 419 /* performance request */
 420 #       define ATCS_REMOVE                                         0
 421 #       define ATCS_FORCE_LOW_POWER                                1
 422 #       define ATCS_PERF_LEVEL_1                                   2 /* PCIE Gen 1 */
 423 #       define ATCS_PERF_LEVEL_2                                   3 /* PCIE Gen 2 */
 424 #       define ATCS_PERF_LEVEL_3                                   4 /* PCIE Gen 3 */
 425 /* return value */
 426 #       define ATCS_REQUEST_REFUSED                                1
 427 #       define ATCS_REQUEST_COMPLETE                               2
 428 #       define ATCS_REQUEST_IN_PROGRESS                            3
 429 #define ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION               0x3
 430 /* ARG0: ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION
 431  * ARG1: none
 432  * OUTPUT: none
 433  */
 434 #define ATCS_FUNCTION_SET_PCIE_BUS_WIDTH                           0x4
 435 /* ARG0: ATCS_FUNCTION_SET_PCIE_BUS_WIDTH
 436  * ARG1:
 437  * WORD  - structure size in bytes (includes size field)
 438  * WORD  - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num)
 439  * BYTE  - number of active lanes
 440  * OUTPUT:
 441  * WORD  - structure size in bytes (includes size field)
 442  * BYTE  - number of active lanes
 443  */
 444
 445 #endif