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 input_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 static_assert(ATIF_QBTC_MAX_DATA_POINTS == MAX_LUMINANCE_DATA_POINTS);
79 static_assert(sizeof(struct atif_qbtc_data_point) == sizeof(struct amdgpu_dm_luminance_data));
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 
86 struct 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 
94 struct 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 
103 struct atcs_pref_req_output {
104 	u16 size;		/* structure size in bytes (includes size field) */
105 	u8 ret_val;		/* return value */
106 } __packed;
107 
108 struct atcs_pwr_shift_input {
109 	u16 size;		/* structure size in bytes (includes size field) */
110 	u16 dgpu_id;		/* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */
111 	u8 dev_acpi_state;	/* D0 = 0, D3 hot = 3 */
112 	u8 drv_state;	/* 0 = operational, 1 = not operational */
113 } __packed;
114 
115 /* AMD hw uses four ACPI control methods:
116  * 1. ATIF
117  * ARG0: (ACPI_INTEGER) function code
118  * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes
119  * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes
120  * ATIF provides an entry point for the gfx driver to interact with the sbios.
121  * The AMD ACPI notification mechanism uses Notify (VGA, 0x81) or a custom
122  * notification. Which notification is used as indicated by the ATIF Control
123  * Method GET_SYSTEM_PARAMETERS. When the driver receives Notify (VGA, 0x81) or
124  * a custom notification it invokes ATIF Control Method GET_SYSTEM_BIOS_REQUESTS
125  * to identify pending System BIOS requests and associated parameters. For
126  * example, if one of the pending requests is DISPLAY_SWITCH_REQUEST, the driver
127  * will perform display device detection and invoke ATIF Control Method
128  * SELECT_ACTIVE_DISPLAYS.
129  *
130  * 2. ATPX
131  * ARG0: (ACPI_INTEGER) function code
132  * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes
133  * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes
134  * ATPX methods are used on PowerXpress systems to handle mux switching and
135  * discrete GPU power control.
136  *
137  * 3. ATRM
138  * ARG0: (ACPI_INTEGER) offset of vbios rom data
139  * ARG1: (ACPI_BUFFER) size of the buffer to fill (up to 4K).
140  * OUTPUT: (ACPI_BUFFER) output buffer
141  * ATRM provides an interfacess to access the discrete GPU vbios image on
142  * PowerXpress systems with multiple GPUs.
143  *
144  * 4. ATCS
145  * ARG0: (ACPI_INTEGER) function code
146  * ARG1: (ACPI_BUFFER) parameter buffer, 256 bytes
147  * OUTPUT: (ACPI_BUFFER) output buffer, 256 bytes
148  * ATCS provides an interface to AMD chipset specific functionality.
149  *
150  */
151 /* ATIF */
152 #define ATIF_FUNCTION_VERIFY_INTERFACE                             0x0
153 /* ARG0: ATIF_FUNCTION_VERIFY_INTERFACE
154  * ARG1: none
155  * OUTPUT:
156  * WORD  - structure size in bytes (includes size field)
157  * WORD  - version
158  * DWORD - supported notifications mask
159  * DWORD - supported functions bit vector
160  */
161 /* Notifications mask */
162 #       define ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED         (1 << 2)
163 #       define ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED    (1 << 3)
164 #       define ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED   (1 << 4)
165 #       define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED      (1 << 7)
166 #       define ATIF_DGPU_DISPLAY_EVENT_SUPPORTED                   (1 << 8)
167 #       define ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST_SUPPORTED      (1 << 12)
168 /* supported functions vector */
169 #       define ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED               (1 << 0)
170 #       define ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED            (1 << 1)
171 #       define ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED     (1 << 12)
172 #       define ATIF_QUERY_BACKLIGHT_TRANSFER_CHARACTERISTICS_SUPPORTED (1 << 15)
173 #       define ATIF_READY_TO_UNDOCK_NOTIFICATION_SUPPORTED        (1 << 16)
174 #       define ATIF_GET_EXTERNAL_GPU_INFORMATION_SUPPORTED        (1 << 20)
175 #define ATIF_FUNCTION_GET_SYSTEM_PARAMETERS                        0x1
176 /* ARG0: ATIF_FUNCTION_GET_SYSTEM_PARAMETERS
177  * ARG1: none
178  * OUTPUT:
179  * WORD  - structure size in bytes (includes size field)
180  * DWORD - valid flags mask
181  * DWORD - flags
182  *
183  * OR
184  *
185  * WORD  - structure size in bytes (includes size field)
186  * DWORD - valid flags mask
187  * DWORD - flags
188  * BYTE  - notify command code
189  *
190  * flags
191  * bits 1:0:
192  * 0 - Notify(VGA, 0x81) is not used for notification
193  * 1 - Notify(VGA, 0x81) is used for notification
194  * 2 - Notify(VGA, n) is used for notification where
195  * n (0xd0-0xd9) is specified in notify command code.
196  * bit 2:
197  * 1 - lid changes not reported though int10
198  * bit 3:
199  * 1 - system bios controls overclocking
200  * bit 4:
201  * 1 - enable overclocking
202  */
203 #define ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS                     0x2
204 /* ARG0: ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS
205  * ARG1: none
206  * OUTPUT:
207  * WORD  - structure size in bytes (includes size field)
208  * DWORD - pending sbios requests
209  * BYTE  - reserved (all zeroes)
210  * BYTE  - thermal state: target gfx controller
211  * BYTE  - thermal state: state id (0: exit state, non-0: state)
212  * BYTE  - forced power state: target gfx controller
213  * BYTE  - forced power state: state id (0: forced state, non-0: state)
214  * BYTE  - system power source
215  * BYTE  - panel backlight level (0-255)
216  * BYTE  - GPU package power limit: target gfx controller
217  * DWORD - GPU package power limit: value (24:8 fractional format, Watts)
218  */
219 /* pending sbios requests */
220 #       define ATIF_THERMAL_STATE_CHANGE_REQUEST                   (1 << 2)
221 #       define ATIF_FORCED_POWER_STATE_CHANGE_REQUEST              (1 << 3)
222 #       define ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST             (1 << 4)
223 #       define ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST                (1 << 7)
224 #       define ATIF_DGPU_DISPLAY_EVENT                             (1 << 8)
225 #       define ATIF_GPU_PACKAGE_POWER_LIMIT_REQUEST                (1 << 12)
226 /* target gfx controller */
227 #       define ATIF_TARGET_GFX_SINGLE                              0
228 #       define ATIF_TARGET_GFX_PX_IGPU                             1
229 #       define ATIF_TARGET_GFX_PX_DGPU                             2
230 /* system power source */
231 #       define ATIF_POWER_SOURCE_AC                                1
232 #       define ATIF_POWER_SOURCE_DC                                2
233 #       define ATIF_POWER_SOURCE_RESTRICTED_AC_1                   3
234 #       define ATIF_POWER_SOURCE_RESTRICTED_AC_2                   4
235 #define ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION              0xD
236 /* ARG0: ATIF_FUNCTION_TEMPERATURE_CHANGE_NOTIFICATION
237  * ARG1:
238  * WORD  - structure size in bytes (includes size field)
239  * WORD  - gfx controller id
240  * BYTE  - current temperature (degress Celsius)
241  * OUTPUT: none
242  */
243 #define ATIF_FUNCTION_QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS    0x10
244 /* ARG0: ATIF_FUNCTION_QUERY_BRIGHTNESS_TRANSFER_CHARACTERISTICS
245  * ARG1:
246  * WORD  - structure size in bytes (includes size field)
247  * BYTE  - requested display
248  * OUTPUT:
249  * WORD  - structure size in bytes (includes size field)
250  * WORD  - flags (currently all 16 bits are reserved)
251  * BYTE  - error code (on failure, disregard all below fields)
252  * BYTE  - AC level (default brightness in percent when machine has full power)
253  * BYTE  - DC level (default brightness in percent when machine is on battery)
254  * BYTE  - min input signal, in range 0-255, corresponding to 0% backlight
255  * BYTE  - max input signal, in range 0-255, corresponding to 100% backlight
256  * BYTE  - number of reported data points
257  * BYTE  - luminance level in percent  \ repeated structure
258  * BYTE  - input signal in range 0-255 / does not have entries for 0% and 100%
259  */
260 /* requested display */
261 #       define ATIF_QBTC_REQUEST_LCD1                              0
262 #       define ATIF_QBTC_REQUEST_CRT1                              1
263 #       define ATIF_QBTC_REQUEST_DFP1                              3
264 #       define ATIF_QBTC_REQUEST_CRT2                              4
265 #       define ATIF_QBTC_REQUEST_LCD2                              5
266 #       define ATIF_QBTC_REQUEST_DFP2                              7
267 #       define ATIF_QBTC_REQUEST_DFP3                              9
268 #       define ATIF_QBTC_REQUEST_DFP4                              10
269 #       define ATIF_QBTC_REQUEST_DFP5                              11
270 #       define ATIF_QBTC_REQUEST_DFP6                              12
271 /* error code */
272 #       define ATIF_QBTC_ERROR_CODE_SUCCESS                        0
273 #       define ATIF_QBTC_ERROR_CODE_FAILURE                        1
274 #       define ATIF_QBTC_ERROR_CODE_DEVICE_NOT_SUPPORTED           2
275 #define ATIF_FUNCTION_READY_TO_UNDOCK_NOTIFICATION                 0x11
276 /* ARG0: ATIF_FUNCTION_READY_TO_UNDOCK_NOTIFICATION
277  * ARG1: none
278  * OUTPUT: none
279  */
280 #define ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION                 0x15
281 /* ARG0: ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION
282  * ARG1: none
283  * OUTPUT:
284  * WORD  - number of reported external gfx devices
285  * WORD  - device structure size in bytes (excludes device size field)
286  * WORD  - flags         \
287  * WORD  - bus number    / repeated structure
288  */
289 /* flags */
290 #       define ATIF_EXTERNAL_GRAPHICS_PORT                         (1 << 0)
291 
292 /* ATPX */
293 #define ATPX_FUNCTION_VERIFY_INTERFACE                             0x0
294 /* ARG0: ATPX_FUNCTION_VERIFY_INTERFACE
295  * ARG1: none
296  * OUTPUT:
297  * WORD  - structure size in bytes (includes size field)
298  * WORD  - version
299  * DWORD - supported functions bit vector
300  */
301 /* supported functions vector */
302 #       define ATPX_GET_PX_PARAMETERS_SUPPORTED                    (1 << 0)
303 #       define ATPX_POWER_CONTROL_SUPPORTED                        (1 << 1)
304 #       define ATPX_DISPLAY_MUX_CONTROL_SUPPORTED                  (1 << 2)
305 #       define ATPX_I2C_MUX_CONTROL_SUPPORTED                      (1 << 3)
306 #       define ATPX_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION_SUPPORTED (1 << 4)
307 #       define ATPX_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION_SUPPORTED   (1 << 5)
308 #       define ATPX_GET_DISPLAY_CONNECTORS_MAPPING_SUPPORTED       (1 << 7)
309 #       define ATPX_GET_DISPLAY_DETECTION_PORTS_SUPPORTED          (1 << 8)
310 #define ATPX_FUNCTION_GET_PX_PARAMETERS                            0x1
311 /* ARG0: ATPX_FUNCTION_GET_PX_PARAMETERS
312  * ARG1: none
313  * OUTPUT:
314  * WORD  - structure size in bytes (includes size field)
315  * DWORD - valid flags mask
316  * DWORD - flags
317  */
318 /* flags */
319 #       define ATPX_LVDS_I2C_AVAILABLE_TO_BOTH_GPUS                (1 << 0)
320 #       define ATPX_CRT1_I2C_AVAILABLE_TO_BOTH_GPUS                (1 << 1)
321 #       define ATPX_DVI1_I2C_AVAILABLE_TO_BOTH_GPUS                (1 << 2)
322 #       define ATPX_CRT1_RGB_SIGNAL_MUXED                          (1 << 3)
323 #       define ATPX_TV_SIGNAL_MUXED                                (1 << 4)
324 #       define ATPX_DFP_SIGNAL_MUXED                               (1 << 5)
325 #       define ATPX_SEPARATE_MUX_FOR_I2C                           (1 << 6)
326 #       define ATPX_DYNAMIC_PX_SUPPORTED                           (1 << 7)
327 #       define ATPX_ACF_NOT_SUPPORTED                              (1 << 8)
328 #       define ATPX_FIXED_NOT_SUPPORTED                            (1 << 9)
329 #       define ATPX_DYNAMIC_DGPU_POWER_OFF_SUPPORTED               (1 << 10)
330 #       define ATPX_DGPU_REQ_POWER_FOR_DISPLAYS                    (1 << 11)
331 #       define ATPX_DGPU_CAN_DRIVE_DISPLAYS                        (1 << 12)
332 #       define ATPX_MS_HYBRID_GFX_SUPPORTED                        (1 << 14)
333 #define ATPX_FUNCTION_POWER_CONTROL                                0x2
334 /* ARG0: ATPX_FUNCTION_POWER_CONTROL
335  * ARG1:
336  * WORD  - structure size in bytes (includes size field)
337  * BYTE  - dGPU power state (0: power off, 1: power on)
338  * OUTPUT: none
339  */
340 #define ATPX_FUNCTION_DISPLAY_MUX_CONTROL                          0x3
341 /* ARG0: ATPX_FUNCTION_DISPLAY_MUX_CONTROL
342  * ARG1:
343  * WORD  - structure size in bytes (includes size field)
344  * WORD  - display mux control (0: iGPU, 1: dGPU)
345  * OUTPUT: none
346  */
347 #       define ATPX_INTEGRATED_GPU                                 0
348 #       define ATPX_DISCRETE_GPU                                   1
349 #define ATPX_FUNCTION_I2C_MUX_CONTROL                              0x4
350 /* ARG0: ATPX_FUNCTION_I2C_MUX_CONTROL
351  * ARG1:
352  * WORD  - structure size in bytes (includes size field)
353  * WORD  - i2c/aux/hpd mux control (0: iGPU, 1: dGPU)
354  * OUTPUT: none
355  */
356 #define ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION    0x5
357 /* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_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_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION      0x6
364 /* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION
365  * ARG1:
366  * WORD  - structure size in bytes (includes size field)
367  * WORD  - target gpu (0: iGPU, 1: dGPU)
368  * OUTPUT: none
369  */
370 #define ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING               0x8
371 /* ARG0: ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING
372  * ARG1: none
373  * OUTPUT:
374  * WORD  - number of display connectors
375  * WORD  - connector structure size in bytes (excludes connector size field)
376  * BYTE  - flags                                                     \
377  * BYTE  - ATIF display vector bit position                           } repeated
378  * BYTE  - adapter id (0: iGPU, 1-n: dGPU ordered by pcie bus number) } structure
379  * WORD  - connector ACPI id                                         /
380  */
381 /* flags */
382 #       define ATPX_DISPLAY_OUTPUT_SUPPORTED_BY_ADAPTER_ID_DEVICE  (1 << 0)
383 #       define ATPX_DISPLAY_HPD_SUPPORTED_BY_ADAPTER_ID_DEVICE     (1 << 1)
384 #       define ATPX_DISPLAY_I2C_SUPPORTED_BY_ADAPTER_ID_DEVICE     (1 << 2)
385 #define ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS                  0x9
386 /* ARG0: ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS
387  * ARG1: none
388  * OUTPUT:
389  * WORD  - number of HPD/DDC ports
390  * WORD  - port structure size in bytes (excludes port size field)
391  * BYTE  - ATIF display vector bit position \
392  * BYTE  - hpd id                            } reapeated structure
393  * BYTE  - ddc id                           /
394  *
395  * available on A+A systems only
396  */
397 /* hpd id */
398 #       define ATPX_HPD_NONE                                       0
399 #       define ATPX_HPD1                                           1
400 #       define ATPX_HPD2                                           2
401 #       define ATPX_HPD3                                           3
402 #       define ATPX_HPD4                                           4
403 #       define ATPX_HPD5                                           5
404 #       define ATPX_HPD6                                           6
405 /* ddc id */
406 #       define ATPX_DDC_NONE                                       0
407 #       define ATPX_DDC1                                           1
408 #       define ATPX_DDC2                                           2
409 #       define ATPX_DDC3                                           3
410 #       define ATPX_DDC4                                           4
411 #       define ATPX_DDC5                                           5
412 #       define ATPX_DDC6                                           6
413 #       define ATPX_DDC7                                           7
414 #       define ATPX_DDC8                                           8
415 
416 /* ATCS */
417 #define ATCS_FUNCTION_VERIFY_INTERFACE                             0x0
418 /* ARG0: ATCS_FUNCTION_VERIFY_INTERFACE
419  * ARG1: none
420  * OUTPUT:
421  * WORD  - structure size in bytes (includes size field)
422  * WORD  - version
423  * DWORD - supported functions bit vector
424  */
425 /* supported functions vector */
426 #       define ATCS_GET_EXTERNAL_STATE_SUPPORTED                   (1 << 0)
427 #       define ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED             (1 << 1)
428 #       define ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED       (1 << 2)
429 #       define ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED                   (1 << 3)
430 #       define ATCS_SET_POWER_SHIFT_CONTROL_SUPPORTED		   (1 << 7)
431 #define ATCS_FUNCTION_GET_EXTERNAL_STATE                           0x1
432 /* ARG0: ATCS_FUNCTION_GET_EXTERNAL_STATE
433  * ARG1: none
434  * OUTPUT:
435  * WORD  - structure size in bytes (includes size field)
436  * DWORD - valid flags mask
437  * DWORD - flags (0: undocked, 1: docked)
438  */
439 /* flags */
440 #       define ATCS_DOCKED                                         (1 << 0)
441 #define ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST                     0x2
442 /* ARG0: ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST
443  * ARG1:
444  * WORD  - structure size in bytes (includes size field)
445  * WORD  - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num)
446  * WORD  - valid flags mask
447  * WORD  - flags
448  * BYTE  - request type
449  * BYTE  - performance request
450  * OUTPUT:
451  * WORD  - structure size in bytes (includes size field)
452  * BYTE  - return value
453  */
454 /* flags */
455 #       define ATCS_ADVERTISE_CAPS                                 (1 << 0)
456 #       define ATCS_WAIT_FOR_COMPLETION                            (1 << 1)
457 /* request type */
458 #       define ATCS_PCIE_LINK_SPEED                                1
459 /* performance request */
460 #       define ATCS_REMOVE                                         0
461 #       define ATCS_FORCE_LOW_POWER                                1
462 #       define ATCS_PERF_LEVEL_1                                   2 /* PCIE Gen 1 */
463 #       define ATCS_PERF_LEVEL_2                                   3 /* PCIE Gen 2 */
464 #       define ATCS_PERF_LEVEL_3                                   4 /* PCIE Gen 3 */
465 /* return value */
466 #       define ATCS_REQUEST_REFUSED                                1
467 #       define ATCS_REQUEST_COMPLETE                               2
468 #       define ATCS_REQUEST_IN_PROGRESS                            3
469 #define ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION               0x3
470 /* ARG0: ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION
471  * ARG1: none
472  * OUTPUT: none
473  */
474 #define ATCS_FUNCTION_SET_PCIE_BUS_WIDTH                           0x4
475 /* ARG0: ATCS_FUNCTION_SET_PCIE_BUS_WIDTH
476  * ARG1:
477  * WORD  - structure size in bytes (includes size field)
478  * WORD  - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num)
479  * BYTE  - number of active lanes
480  * OUTPUT:
481  * WORD  - structure size in bytes (includes size field)
482  * BYTE  - number of active lanes
483  */
484 
485 #define ATCS_FUNCTION_POWER_SHIFT_CONTROL                          0x8
486 /* ARG0: ATCS_FUNCTION_POWER_SHIFT_CONTROL
487  * ARG1:
488  * WORD  - structure size in bytes (includes size field)
489  * WORD  - dGPU id (bit 2-0: func num, 7-3: dev num, 15-8: bus num)
490  * BYTE  - Device ACPI state
491  * BYTE  - Driver state
492  * OUTPUT: none
493  */
494 
495 #endif
496