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 RADEON_ACPI_H
25 #define RADEON_ACPI_H
26 
27 struct radeon_device;
28 struct acpi_bus_event;
29 
30 int radeon_atif_handler(struct radeon_device *rdev,
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_DGPU_CAN_DRIVE_DISPLAYS                        (1 << 12)
295 #       define ATPX_MS_HYBRID_GFX_SUPPORTED                        (1 << 14)
296 #define ATPX_FUNCTION_POWER_CONTROL                                0x2
297 /* ARG0: ATPX_FUNCTION_POWER_CONTROL
298  * ARG1:
299  * WORD  - structure size in bytes (includes size field)
300  * BYTE  - dGPU power state (0: power off, 1: power on)
301  * OUTPUT: none
302  */
303 #define ATPX_FUNCTION_DISPLAY_MUX_CONTROL                          0x3
304 /* ARG0: ATPX_FUNCTION_DISPLAY_MUX_CONTROL
305  * ARG1:
306  * WORD  - structure size in bytes (includes size field)
307  * WORD  - display mux control (0: iGPU, 1: dGPU)
308  * OUTPUT: none
309  */
310 #       define ATPX_INTEGRATED_GPU                                 0
311 #       define ATPX_DISCRETE_GPU                                   1
312 #define ATPX_FUNCTION_I2C_MUX_CONTROL                              0x4
313 /* ARG0: ATPX_FUNCTION_I2C_MUX_CONTROL
314  * ARG1:
315  * WORD  - structure size in bytes (includes size field)
316  * WORD  - i2c/aux/hpd mux control (0: iGPU, 1: dGPU)
317  * OUTPUT: none
318  */
319 #define ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION    0x5
320 /* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_START_NOTIFICATION
321  * ARG1:
322  * WORD  - structure size in bytes (includes size field)
323  * WORD  - target gpu (0: iGPU, 1: dGPU)
324  * OUTPUT: none
325  */
326 #define ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION      0x6
327 /* ARG0: ATPX_FUNCTION_GRAPHICS_DEVICE_SWITCH_END_NOTIFICATION
328  * ARG1:
329  * WORD  - structure size in bytes (includes size field)
330  * WORD  - target gpu (0: iGPU, 1: dGPU)
331  * OUTPUT: none
332  */
333 #define ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING               0x8
334 /* ARG0: ATPX_FUNCTION_GET_DISPLAY_CONNECTORS_MAPPING
335  * ARG1: none
336  * OUTPUT:
337  * WORD  - number of display connectors
338  * WORD  - connector structure size in bytes (excludes connector size field)
339  * BYTE  - flags                                                     \
340  * BYTE  - ATIF display vector bit position                           } repeated
341  * BYTE  - adapter id (0: iGPU, 1-n: dGPU ordered by pcie bus number) } structure
342  * WORD  - connector ACPI id                                         /
343  */
344 /* flags */
345 #       define ATPX_DISPLAY_OUTPUT_SUPPORTED_BY_ADAPTER_ID_DEVICE  (1 << 0)
346 #       define ATPX_DISPLAY_HPD_SUPPORTED_BY_ADAPTER_ID_DEVICE     (1 << 1)
347 #       define ATPX_DISPLAY_I2C_SUPPORTED_BY_ADAPTER_ID_DEVICE     (1 << 2)
348 #define ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS                  0x9
349 /* ARG0: ATPX_FUNCTION_GET_DISPLAY_DETECTION_PORTS
350  * ARG1: none
351  * OUTPUT:
352  * WORD  - number of HPD/DDC ports
353  * WORD  - port structure size in bytes (excludes port size field)
354  * BYTE  - ATIF display vector bit position \
355  * BYTE  - hpd id                            } reapeated structure
356  * BYTE  - ddc id                           /
357  *
358  * available on A+A systems only
359  */
360 /* hpd id */
361 #       define ATPX_HPD_NONE                                       0
362 #       define ATPX_HPD1                                           1
363 #       define ATPX_HPD2                                           2
364 #       define ATPX_HPD3                                           3
365 #       define ATPX_HPD4                                           4
366 #       define ATPX_HPD5                                           5
367 #       define ATPX_HPD6                                           6
368 /* ddc id */
369 #       define ATPX_DDC_NONE                                       0
370 #       define ATPX_DDC1                                           1
371 #       define ATPX_DDC2                                           2
372 #       define ATPX_DDC3                                           3
373 #       define ATPX_DDC4                                           4
374 #       define ATPX_DDC5                                           5
375 #       define ATPX_DDC6                                           6
376 #       define ATPX_DDC7                                           7
377 #       define ATPX_DDC8                                           8
378 
379 /* ATCS */
380 #define ATCS_FUNCTION_VERIFY_INTERFACE                             0x0
381 /* ARG0: ATCS_FUNCTION_VERIFY_INTERFACE
382  * ARG1: none
383  * OUTPUT:
384  * WORD  - structure size in bytes (includes size field)
385  * WORD  - version
386  * DWORD - supported functions bit vector
387  */
388 /* supported functions vector */
389 #       define ATCS_GET_EXTERNAL_STATE_SUPPORTED                   (1 << 0)
390 #       define ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED             (1 << 1)
391 #       define ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED       (1 << 2)
392 #       define ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED                   (1 << 3)
393 #define ATCS_FUNCTION_GET_EXTERNAL_STATE                           0x1
394 /* ARG0: ATCS_FUNCTION_GET_EXTERNAL_STATE
395  * ARG1: none
396  * OUTPUT:
397  * WORD  - structure size in bytes (includes size field)
398  * DWORD - valid flags mask
399  * DWORD - flags (0: undocked, 1: docked)
400  */
401 /* flags */
402 #       define ATCS_DOCKED                                         (1 << 0)
403 #define ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST                     0x2
404 /* ARG0: ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST
405  * ARG1:
406  * WORD  - structure size in bytes (includes size field)
407  * WORD  - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num)
408  * WORD  - valid flags mask
409  * WORD  - flags
410  * BYTE  - request type
411  * BYTE  - performance request
412  * OUTPUT:
413  * WORD  - structure size in bytes (includes size field)
414  * BYTE  - return value
415  */
416 /* flags */
417 #       define ATCS_ADVERTISE_CAPS                                 (1 << 0)
418 #       define ATCS_WAIT_FOR_COMPLETION                            (1 << 1)
419 /* request type */
420 #       define ATCS_PCIE_LINK_SPEED                                1
421 /* performance request */
422 #       define ATCS_REMOVE                                         0
423 #       define ATCS_FORCE_LOW_POWER                                1
424 #       define ATCS_PERF_LEVEL_1                                   2 /* PCIE Gen 1 */
425 #       define ATCS_PERF_LEVEL_2                                   3 /* PCIE Gen 2 */
426 #       define ATCS_PERF_LEVEL_3                                   4 /* PCIE Gen 3 */
427 /* return value */
428 #       define ATCS_REQUEST_REFUSED                                1
429 #       define ATCS_REQUEST_COMPLETE                               2
430 #       define ATCS_REQUEST_IN_PROGRESS                            3
431 #define ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION               0x3
432 /* ARG0: ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION
433  * ARG1: none
434  * OUTPUT: none
435  */
436 #define ATCS_FUNCTION_SET_PCIE_BUS_WIDTH                           0x4
437 /* ARG0: ATCS_FUNCTION_SET_PCIE_BUS_WIDTH
438  * ARG1:
439  * WORD  - structure size in bytes (includes size field)
440  * WORD  - client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num)
441  * BYTE  - number of active lanes
442  * OUTPUT:
443  * WORD  - structure size in bytes (includes size field)
444  * BYTE  - number of active lanes
445  */
446 
447 #endif
448