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

source code of linux/drivers/gpu/drm/amd/include/amd_acpi.h