1 /*
2  * Copyright 2007-8 Advanced Micro Devices, Inc.
3  * Copyright 2008 Red Hat Inc.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a
6  * copy of this software and associated documentation files (the "Software"),
7  * to deal in the Software without restriction, including without limitation
8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9  * and/or sell copies of the Software, and to permit persons to whom the
10  * Software is furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be included in
13  * all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21  * OTHER DEALINGS IN THE SOFTWARE.
22  *
23  * Authors: Dave Airlie
24  *          Alex Deucher
25  */
26 
27 #include <drm/amdgpu_drm.h>
28 #include "amdgpu.h"
29 #include "amdgpu_atombios.h"
30 #include "amdgpu_atomfirmware.h"
31 #include "amdgpu_i2c.h"
32 #include "amdgpu_display.h"
33 
34 #include "atom.h"
35 #include "atom-bits.h"
36 #include "atombios_encoders.h"
37 #include "bif/bif_4_1_d.h"
38 
39 static void amdgpu_atombios_lookup_i2c_gpio_quirks(struct amdgpu_device *adev,
40 					  ATOM_GPIO_I2C_ASSIGMENT *gpio,
41 					  u8 index)
42 {
43 
44 }
45 
46 static struct amdgpu_i2c_bus_rec amdgpu_atombios_get_bus_rec_for_i2c_gpio(ATOM_GPIO_I2C_ASSIGMENT *gpio)
47 {
48 	struct amdgpu_i2c_bus_rec i2c;
49 
50 	memset(&i2c, 0, sizeof(struct amdgpu_i2c_bus_rec));
51 
52 	i2c.mask_clk_reg = le16_to_cpu(gpio->usClkMaskRegisterIndex);
53 	i2c.mask_data_reg = le16_to_cpu(gpio->usDataMaskRegisterIndex);
54 	i2c.en_clk_reg = le16_to_cpu(gpio->usClkEnRegisterIndex);
55 	i2c.en_data_reg = le16_to_cpu(gpio->usDataEnRegisterIndex);
56 	i2c.y_clk_reg = le16_to_cpu(gpio->usClkY_RegisterIndex);
57 	i2c.y_data_reg = le16_to_cpu(gpio->usDataY_RegisterIndex);
58 	i2c.a_clk_reg = le16_to_cpu(gpio->usClkA_RegisterIndex);
59 	i2c.a_data_reg = le16_to_cpu(gpio->usDataA_RegisterIndex);
60 	i2c.mask_clk_mask = (1 << gpio->ucClkMaskShift);
61 	i2c.mask_data_mask = (1 << gpio->ucDataMaskShift);
62 	i2c.en_clk_mask = (1 << gpio->ucClkEnShift);
63 	i2c.en_data_mask = (1 << gpio->ucDataEnShift);
64 	i2c.y_clk_mask = (1 << gpio->ucClkY_Shift);
65 	i2c.y_data_mask = (1 << gpio->ucDataY_Shift);
66 	i2c.a_clk_mask = (1 << gpio->ucClkA_Shift);
67 	i2c.a_data_mask = (1 << gpio->ucDataA_Shift);
68 
69 	if (gpio->sucI2cId.sbfAccess.bfHW_Capable)
70 		i2c.hw_capable = true;
71 	else
72 		i2c.hw_capable = false;
73 
74 	if (gpio->sucI2cId.ucAccess == 0xa0)
75 		i2c.mm_i2c = true;
76 	else
77 		i2c.mm_i2c = false;
78 
79 	i2c.i2c_id = gpio->sucI2cId.ucAccess;
80 
81 	if (i2c.mask_clk_reg)
82 		i2c.valid = true;
83 	else
84 		i2c.valid = false;
85 
86 	return i2c;
87 }
88 
89 struct amdgpu_i2c_bus_rec amdgpu_atombios_lookup_i2c_gpio(struct amdgpu_device *adev,
90 							  uint8_t id)
91 {
92 	struct atom_context *ctx = adev->mode_info.atom_context;
93 	ATOM_GPIO_I2C_ASSIGMENT *gpio;
94 	struct amdgpu_i2c_bus_rec i2c;
95 	int index = GetIndexIntoMasterTable(DATA, GPIO_I2C_Info);
96 	struct _ATOM_GPIO_I2C_INFO *i2c_info;
97 	uint16_t data_offset, size;
98 	int i, num_indices;
99 
100 	memset(&i2c, 0, sizeof(struct amdgpu_i2c_bus_rec));
101 	i2c.valid = false;
102 
103 	if (amdgpu_atom_parse_data_header(ctx, index, &size, NULL, NULL, &data_offset)) {
104 		i2c_info = (struct _ATOM_GPIO_I2C_INFO *)(ctx->bios + data_offset);
105 
106 		num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) /
107 			sizeof(ATOM_GPIO_I2C_ASSIGMENT);
108 
109 		gpio = &i2c_info->asGPIO_Info[0];
110 		for (i = 0; i < num_indices; i++) {
111 
112 			amdgpu_atombios_lookup_i2c_gpio_quirks(adev, gpio, i);
113 
114 			if (gpio->sucI2cId.ucAccess == id) {
115 				i2c = amdgpu_atombios_get_bus_rec_for_i2c_gpio(gpio);
116 				break;
117 			}
118 			gpio = (ATOM_GPIO_I2C_ASSIGMENT *)
119 				((u8 *)gpio + sizeof(ATOM_GPIO_I2C_ASSIGMENT));
120 		}
121 	}
122 
123 	return i2c;
124 }
125 
126 void amdgpu_atombios_i2c_init(struct amdgpu_device *adev)
127 {
128 	struct atom_context *ctx = adev->mode_info.atom_context;
129 	ATOM_GPIO_I2C_ASSIGMENT *gpio;
130 	struct amdgpu_i2c_bus_rec i2c;
131 	int index = GetIndexIntoMasterTable(DATA, GPIO_I2C_Info);
132 	struct _ATOM_GPIO_I2C_INFO *i2c_info;
133 	uint16_t data_offset, size;
134 	int i, num_indices;
135 	char stmp[32];
136 
137 	if (amdgpu_atom_parse_data_header(ctx, index, &size, NULL, NULL, &data_offset)) {
138 		i2c_info = (struct _ATOM_GPIO_I2C_INFO *)(ctx->bios + data_offset);
139 
140 		num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) /
141 			sizeof(ATOM_GPIO_I2C_ASSIGMENT);
142 
143 		gpio = &i2c_info->asGPIO_Info[0];
144 		for (i = 0; i < num_indices; i++) {
145 			amdgpu_atombios_lookup_i2c_gpio_quirks(adev, gpio, i);
146 
147 			i2c = amdgpu_atombios_get_bus_rec_for_i2c_gpio(gpio);
148 
149 			if (i2c.valid) {
150 				sprintf(stmp, "0x%x", i2c.i2c_id);
151 				adev->i2c_bus[i] = amdgpu_i2c_create(adev_to_drm(adev), &i2c, stmp);
152 			}
153 			gpio = (ATOM_GPIO_I2C_ASSIGMENT *)
154 				((u8 *)gpio + sizeof(ATOM_GPIO_I2C_ASSIGMENT));
155 		}
156 	}
157 }
158 
159 struct amdgpu_gpio_rec
160 amdgpu_atombios_lookup_gpio(struct amdgpu_device *adev,
161 			    u8 id)
162 {
163 	struct atom_context *ctx = adev->mode_info.atom_context;
164 	struct amdgpu_gpio_rec gpio;
165 	int index = GetIndexIntoMasterTable(DATA, GPIO_Pin_LUT);
166 	struct _ATOM_GPIO_PIN_LUT *gpio_info;
167 	ATOM_GPIO_PIN_ASSIGNMENT *pin;
168 	u16 data_offset, size;
169 	int i, num_indices;
170 
171 	memset(&gpio, 0, sizeof(struct amdgpu_gpio_rec));
172 	gpio.valid = false;
173 
174 	if (amdgpu_atom_parse_data_header(ctx, index, &size, NULL, NULL, &data_offset)) {
175 		gpio_info = (struct _ATOM_GPIO_PIN_LUT *)(ctx->bios + data_offset);
176 
177 		num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) /
178 			sizeof(ATOM_GPIO_PIN_ASSIGNMENT);
179 
180 		pin = gpio_info->asGPIO_Pin;
181 		for (i = 0; i < num_indices; i++) {
182 			if (id == pin->ucGPIO_ID) {
183 				gpio.id = pin->ucGPIO_ID;
184 				gpio.reg = le16_to_cpu(pin->usGpioPin_AIndex);
185 				gpio.shift = pin->ucGpioPinBitShift;
186 				gpio.mask = (1 << pin->ucGpioPinBitShift);
187 				gpio.valid = true;
188 				break;
189 			}
190 			pin = (ATOM_GPIO_PIN_ASSIGNMENT *)
191 				((u8 *)pin + sizeof(ATOM_GPIO_PIN_ASSIGNMENT));
192 		}
193 	}
194 
195 	return gpio;
196 }
197 
198 static struct amdgpu_hpd
199 amdgpu_atombios_get_hpd_info_from_gpio(struct amdgpu_device *adev,
200 				       struct amdgpu_gpio_rec *gpio)
201 {
202 	struct amdgpu_hpd hpd;
203 	u32 reg;
204 
205 	memset(&hpd, 0, sizeof(struct amdgpu_hpd));
206 
207 	reg = amdgpu_display_hpd_get_gpio_reg(adev);
208 
209 	hpd.gpio = *gpio;
210 	if (gpio->reg == reg) {
211 		switch(gpio->mask) {
212 		case (1 << 0):
213 			hpd.hpd = AMDGPU_HPD_1;
214 			break;
215 		case (1 << 8):
216 			hpd.hpd = AMDGPU_HPD_2;
217 			break;
218 		case (1 << 16):
219 			hpd.hpd = AMDGPU_HPD_3;
220 			break;
221 		case (1 << 24):
222 			hpd.hpd = AMDGPU_HPD_4;
223 			break;
224 		case (1 << 26):
225 			hpd.hpd = AMDGPU_HPD_5;
226 			break;
227 		case (1 << 28):
228 			hpd.hpd = AMDGPU_HPD_6;
229 			break;
230 		default:
231 			hpd.hpd = AMDGPU_HPD_NONE;
232 			break;
233 		}
234 	} else
235 		hpd.hpd = AMDGPU_HPD_NONE;
236 	return hpd;
237 }
238 
239 static const int object_connector_convert[] = {
240 	DRM_MODE_CONNECTOR_Unknown,
241 	DRM_MODE_CONNECTOR_DVII,
242 	DRM_MODE_CONNECTOR_DVII,
243 	DRM_MODE_CONNECTOR_DVID,
244 	DRM_MODE_CONNECTOR_DVID,
245 	DRM_MODE_CONNECTOR_VGA,
246 	DRM_MODE_CONNECTOR_Composite,
247 	DRM_MODE_CONNECTOR_SVIDEO,
248 	DRM_MODE_CONNECTOR_Unknown,
249 	DRM_MODE_CONNECTOR_Unknown,
250 	DRM_MODE_CONNECTOR_9PinDIN,
251 	DRM_MODE_CONNECTOR_Unknown,
252 	DRM_MODE_CONNECTOR_HDMIA,
253 	DRM_MODE_CONNECTOR_HDMIB,
254 	DRM_MODE_CONNECTOR_LVDS,
255 	DRM_MODE_CONNECTOR_9PinDIN,
256 	DRM_MODE_CONNECTOR_Unknown,
257 	DRM_MODE_CONNECTOR_Unknown,
258 	DRM_MODE_CONNECTOR_Unknown,
259 	DRM_MODE_CONNECTOR_DisplayPort,
260 	DRM_MODE_CONNECTOR_eDP,
261 	DRM_MODE_CONNECTOR_Unknown
262 };
263 
264 bool amdgpu_atombios_has_dce_engine_info(struct amdgpu_device *adev)
265 {
266 	struct amdgpu_mode_info *mode_info = &adev->mode_info;
267 	struct atom_context *ctx = mode_info->atom_context;
268 	int index = GetIndexIntoMasterTable(DATA, Object_Header);
269 	u16 size, data_offset;
270 	u8 frev, crev;
271 	ATOM_DISPLAY_OBJECT_PATH_TABLE *path_obj;
272 	ATOM_OBJECT_HEADER *obj_header;
273 
274 	if (!amdgpu_atom_parse_data_header(ctx, index, &size, &frev, &crev, &data_offset))
275 		return false;
276 
277 	if (crev < 2)
278 		return false;
279 
280 	obj_header = (ATOM_OBJECT_HEADER *) (ctx->bios + data_offset);
281 	path_obj = (ATOM_DISPLAY_OBJECT_PATH_TABLE *)
282 	    (ctx->bios + data_offset +
283 	     le16_to_cpu(obj_header->usDisplayPathTableOffset));
284 
285 	if (path_obj->ucNumOfDispPath)
286 		return true;
287 	else
288 		return false;
289 }
290 
291 bool amdgpu_atombios_get_connector_info_from_object_table(struct amdgpu_device *adev)
292 {
293 	struct amdgpu_mode_info *mode_info = &adev->mode_info;
294 	struct atom_context *ctx = mode_info->atom_context;
295 	int index = GetIndexIntoMasterTable(DATA, Object_Header);
296 	u16 size, data_offset;
297 	u8 frev, crev;
298 	ATOM_CONNECTOR_OBJECT_TABLE *con_obj;
299 	ATOM_ENCODER_OBJECT_TABLE *enc_obj;
300 	ATOM_OBJECT_TABLE *router_obj;
301 	ATOM_DISPLAY_OBJECT_PATH_TABLE *path_obj;
302 	ATOM_OBJECT_HEADER *obj_header;
303 	int i, j, k, path_size, device_support;
304 	int connector_type;
305 	u16 conn_id, connector_object_id;
306 	struct amdgpu_i2c_bus_rec ddc_bus;
307 	struct amdgpu_router router;
308 	struct amdgpu_gpio_rec gpio;
309 	struct amdgpu_hpd hpd;
310 
311 	if (!amdgpu_atom_parse_data_header(ctx, index, &size, &frev, &crev, &data_offset))
312 		return false;
313 
314 	if (crev < 2)
315 		return false;
316 
317 	obj_header = (ATOM_OBJECT_HEADER *) (ctx->bios + data_offset);
318 	path_obj = (ATOM_DISPLAY_OBJECT_PATH_TABLE *)
319 	    (ctx->bios + data_offset +
320 	     le16_to_cpu(obj_header->usDisplayPathTableOffset));
321 	con_obj = (ATOM_CONNECTOR_OBJECT_TABLE *)
322 	    (ctx->bios + data_offset +
323 	     le16_to_cpu(obj_header->usConnectorObjectTableOffset));
324 	enc_obj = (ATOM_ENCODER_OBJECT_TABLE *)
325 	    (ctx->bios + data_offset +
326 	     le16_to_cpu(obj_header->usEncoderObjectTableOffset));
327 	router_obj = (ATOM_OBJECT_TABLE *)
328 		(ctx->bios + data_offset +
329 		 le16_to_cpu(obj_header->usRouterObjectTableOffset));
330 	device_support = le16_to_cpu(obj_header->usDeviceSupport);
331 
332 	path_size = 0;
333 	for (i = 0; i < path_obj->ucNumOfDispPath; i++) {
334 		uint8_t *addr = (uint8_t *) path_obj->asDispPath;
335 		ATOM_DISPLAY_OBJECT_PATH *path;
336 		addr += path_size;
337 		path = (ATOM_DISPLAY_OBJECT_PATH *) addr;
338 		path_size += le16_to_cpu(path->usSize);
339 
340 		if (device_support & le16_to_cpu(path->usDeviceTag)) {
341 			uint8_t con_obj_id =
342 			    (le16_to_cpu(path->usConnObjectId) & OBJECT_ID_MASK)
343 			    >> OBJECT_ID_SHIFT;
344 
345 			/* Skip TV/CV support */
346 			if ((le16_to_cpu(path->usDeviceTag) ==
347 			     ATOM_DEVICE_TV1_SUPPORT) ||
348 			    (le16_to_cpu(path->usDeviceTag) ==
349 			     ATOM_DEVICE_CV_SUPPORT))
350 				continue;
351 
352 			if (con_obj_id >= ARRAY_SIZE(object_connector_convert)) {
353 				DRM_ERROR("invalid con_obj_id %d for device tag 0x%04x\n",
354 					  con_obj_id, le16_to_cpu(path->usDeviceTag));
355 				continue;
356 			}
357 
358 			connector_type =
359 				object_connector_convert[con_obj_id];
360 			connector_object_id = con_obj_id;
361 
362 			if (connector_type == DRM_MODE_CONNECTOR_Unknown)
363 				continue;
364 
365 			router.ddc_valid = false;
366 			router.cd_valid = false;
367 			for (j = 0; j < ((le16_to_cpu(path->usSize) - 8) / 2); j++) {
368 				uint8_t grph_obj_type =
369 				    (le16_to_cpu(path->usGraphicObjIds[j]) &
370 				     OBJECT_TYPE_MASK) >> OBJECT_TYPE_SHIFT;
371 
372 				if (grph_obj_type == GRAPH_OBJECT_TYPE_ENCODER) {
373 					for (k = 0; k < enc_obj->ucNumberOfObjects; k++) {
374 						u16 encoder_obj = le16_to_cpu(enc_obj->asObjects[k].usObjectID);
375 						if (le16_to_cpu(path->usGraphicObjIds[j]) == encoder_obj) {
376 							ATOM_COMMON_RECORD_HEADER *record = (ATOM_COMMON_RECORD_HEADER *)
377 								(ctx->bios + data_offset +
378 								 le16_to_cpu(enc_obj->asObjects[k].usRecordOffset));
379 							ATOM_ENCODER_CAP_RECORD *cap_record;
380 							u16 caps = 0;
381 
382 							while (record->ucRecordSize > 0 &&
383 							       record->ucRecordType > 0 &&
384 							       record->ucRecordType <= ATOM_MAX_OBJECT_RECORD_NUMBER) {
385 								switch (record->ucRecordType) {
386 								case ATOM_ENCODER_CAP_RECORD_TYPE:
387 									cap_record =(ATOM_ENCODER_CAP_RECORD *)
388 										record;
389 									caps = le16_to_cpu(cap_record->usEncoderCap);
390 									break;
391 								}
392 								record = (ATOM_COMMON_RECORD_HEADER *)
393 									((char *)record + record->ucRecordSize);
394 							}
395 							amdgpu_display_add_encoder(adev, encoder_obj,
396 										    le16_to_cpu(path->usDeviceTag),
397 										    caps);
398 						}
399 					}
400 				} else if (grph_obj_type == GRAPH_OBJECT_TYPE_ROUTER) {
401 					for (k = 0; k < router_obj->ucNumberOfObjects; k++) {
402 						u16 router_obj_id = le16_to_cpu(router_obj->asObjects[k].usObjectID);
403 						if (le16_to_cpu(path->usGraphicObjIds[j]) == router_obj_id) {
404 							ATOM_COMMON_RECORD_HEADER *record = (ATOM_COMMON_RECORD_HEADER *)
405 								(ctx->bios + data_offset +
406 								 le16_to_cpu(router_obj->asObjects[k].usRecordOffset));
407 							ATOM_I2C_RECORD *i2c_record;
408 							ATOM_I2C_ID_CONFIG_ACCESS *i2c_config;
409 							ATOM_ROUTER_DDC_PATH_SELECT_RECORD *ddc_path;
410 							ATOM_ROUTER_DATA_CLOCK_PATH_SELECT_RECORD *cd_path;
411 							ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT *router_src_dst_table =
412 								(ATOM_SRC_DST_TABLE_FOR_ONE_OBJECT *)
413 								(ctx->bios + data_offset +
414 								 le16_to_cpu(router_obj->asObjects[k].usSrcDstTableOffset));
415 							u8 *num_dst_objs = (u8 *)
416 								((u8 *)router_src_dst_table + 1 +
417 								 (router_src_dst_table->ucNumberOfSrc * 2));
418 							u16 *dst_objs = (u16 *)(num_dst_objs + 1);
419 							int enum_id;
420 
421 							router.router_id = router_obj_id;
422 							for (enum_id = 0; enum_id < (*num_dst_objs); enum_id++) {
423 								if (le16_to_cpu(path->usConnObjectId) ==
424 								    le16_to_cpu(dst_objs[enum_id]))
425 									break;
426 							}
427 
428 							while (record->ucRecordSize > 0 &&
429 							       record->ucRecordType > 0 &&
430 							       record->ucRecordType <= ATOM_MAX_OBJECT_RECORD_NUMBER) {
431 								switch (record->ucRecordType) {
432 								case ATOM_I2C_RECORD_TYPE:
433 									i2c_record =
434 										(ATOM_I2C_RECORD *)
435 										record;
436 									i2c_config =
437 										(ATOM_I2C_ID_CONFIG_ACCESS *)
438 										&i2c_record->sucI2cId;
439 									router.i2c_info =
440 										amdgpu_atombios_lookup_i2c_gpio(adev,
441 												       i2c_config->
442 												       ucAccess);
443 									router.i2c_addr = i2c_record->ucI2CAddr >> 1;
444 									break;
445 								case ATOM_ROUTER_DDC_PATH_SELECT_RECORD_TYPE:
446 									ddc_path = (ATOM_ROUTER_DDC_PATH_SELECT_RECORD *)
447 										record;
448 									router.ddc_valid = true;
449 									router.ddc_mux_type = ddc_path->ucMuxType;
450 									router.ddc_mux_control_pin = ddc_path->ucMuxControlPin;
451 									router.ddc_mux_state = ddc_path->ucMuxState[enum_id];
452 									break;
453 								case ATOM_ROUTER_DATA_CLOCK_PATH_SELECT_RECORD_TYPE:
454 									cd_path = (ATOM_ROUTER_DATA_CLOCK_PATH_SELECT_RECORD *)
455 										record;
456 									router.cd_valid = true;
457 									router.cd_mux_type = cd_path->ucMuxType;
458 									router.cd_mux_control_pin = cd_path->ucMuxControlPin;
459 									router.cd_mux_state = cd_path->ucMuxState[enum_id];
460 									break;
461 								}
462 								record = (ATOM_COMMON_RECORD_HEADER *)
463 									((char *)record + record->ucRecordSize);
464 							}
465 						}
466 					}
467 				}
468 			}
469 
470 			/* look up gpio for ddc, hpd */
471 			ddc_bus.valid = false;
472 			hpd.hpd = AMDGPU_HPD_NONE;
473 			if ((le16_to_cpu(path->usDeviceTag) &
474 			     (ATOM_DEVICE_TV_SUPPORT | ATOM_DEVICE_CV_SUPPORT)) == 0) {
475 				for (j = 0; j < con_obj->ucNumberOfObjects; j++) {
476 					if (le16_to_cpu(path->usConnObjectId) ==
477 					    le16_to_cpu(con_obj->asObjects[j].
478 							usObjectID)) {
479 						ATOM_COMMON_RECORD_HEADER
480 						    *record =
481 						    (ATOM_COMMON_RECORD_HEADER
482 						     *)
483 						    (ctx->bios + data_offset +
484 						     le16_to_cpu(con_obj->
485 								 asObjects[j].
486 								 usRecordOffset));
487 						ATOM_I2C_RECORD *i2c_record;
488 						ATOM_HPD_INT_RECORD *hpd_record;
489 						ATOM_I2C_ID_CONFIG_ACCESS *i2c_config;
490 
491 						while (record->ucRecordSize > 0 &&
492 						       record->ucRecordType > 0 &&
493 						       record->ucRecordType <= ATOM_MAX_OBJECT_RECORD_NUMBER) {
494 							switch (record->ucRecordType) {
495 							case ATOM_I2C_RECORD_TYPE:
496 								i2c_record =
497 								    (ATOM_I2C_RECORD *)
498 									record;
499 								i2c_config =
500 									(ATOM_I2C_ID_CONFIG_ACCESS *)
501 									&i2c_record->sucI2cId;
502 								ddc_bus = amdgpu_atombios_lookup_i2c_gpio(adev,
503 												 i2c_config->
504 												 ucAccess);
505 								break;
506 							case ATOM_HPD_INT_RECORD_TYPE:
507 								hpd_record =
508 									(ATOM_HPD_INT_RECORD *)
509 									record;
510 								gpio = amdgpu_atombios_lookup_gpio(adev,
511 											  hpd_record->ucHPDIntGPIOID);
512 								hpd = amdgpu_atombios_get_hpd_info_from_gpio(adev, &gpio);
513 								hpd.plugged_state = hpd_record->ucPlugged_PinState;
514 								break;
515 							}
516 							record =
517 							    (ATOM_COMMON_RECORD_HEADER
518 							     *) ((char *)record
519 								 +
520 								 record->
521 								 ucRecordSize);
522 						}
523 						break;
524 					}
525 				}
526 			}
527 
528 			/* needed for aux chan transactions */
529 			ddc_bus.hpd = hpd.hpd;
530 
531 			conn_id = le16_to_cpu(path->usConnObjectId);
532 
533 			amdgpu_display_add_connector(adev,
534 						      conn_id,
535 						      le16_to_cpu(path->usDeviceTag),
536 						      connector_type, &ddc_bus,
537 						      connector_object_id,
538 						      &hpd,
539 						      &router);
540 
541 		}
542 	}
543 
544 	amdgpu_link_encoder_connector(adev_to_drm(adev));
545 
546 	return true;
547 }
548 
549 union firmware_info {
550 	ATOM_FIRMWARE_INFO info;
551 	ATOM_FIRMWARE_INFO_V1_2 info_12;
552 	ATOM_FIRMWARE_INFO_V1_3 info_13;
553 	ATOM_FIRMWARE_INFO_V1_4 info_14;
554 	ATOM_FIRMWARE_INFO_V2_1 info_21;
555 	ATOM_FIRMWARE_INFO_V2_2 info_22;
556 };
557 
558 int amdgpu_atombios_get_clock_info(struct amdgpu_device *adev)
559 {
560 	struct amdgpu_mode_info *mode_info = &adev->mode_info;
561 	int index = GetIndexIntoMasterTable(DATA, FirmwareInfo);
562 	uint8_t frev, crev;
563 	uint16_t data_offset;
564 	int ret = -EINVAL;
565 
566 	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
567 				   &frev, &crev, &data_offset)) {
568 		int i;
569 		struct amdgpu_pll *ppll = &adev->clock.ppll[0];
570 		struct amdgpu_pll *spll = &adev->clock.spll;
571 		struct amdgpu_pll *mpll = &adev->clock.mpll;
572 		union firmware_info *firmware_info =
573 			(union firmware_info *)(mode_info->atom_context->bios +
574 						data_offset);
575 		/* pixel clocks */
576 		ppll->reference_freq =
577 		    le16_to_cpu(firmware_info->info.usReferenceClock);
578 		ppll->reference_div = 0;
579 
580 		ppll->pll_out_min =
581 			le32_to_cpu(firmware_info->info_12.ulMinPixelClockPLL_Output);
582 		ppll->pll_out_max =
583 		    le32_to_cpu(firmware_info->info.ulMaxPixelClockPLL_Output);
584 
585 		ppll->lcd_pll_out_min =
586 			le16_to_cpu(firmware_info->info_14.usLcdMinPixelClockPLL_Output) * 100;
587 		if (ppll->lcd_pll_out_min == 0)
588 			ppll->lcd_pll_out_min = ppll->pll_out_min;
589 		ppll->lcd_pll_out_max =
590 			le16_to_cpu(firmware_info->info_14.usLcdMaxPixelClockPLL_Output) * 100;
591 		if (ppll->lcd_pll_out_max == 0)
592 			ppll->lcd_pll_out_max = ppll->pll_out_max;
593 
594 		if (ppll->pll_out_min == 0)
595 			ppll->pll_out_min = 64800;
596 
597 		ppll->pll_in_min =
598 		    le16_to_cpu(firmware_info->info.usMinPixelClockPLL_Input);
599 		ppll->pll_in_max =
600 		    le16_to_cpu(firmware_info->info.usMaxPixelClockPLL_Input);
601 
602 		ppll->min_post_div = 2;
603 		ppll->max_post_div = 0x7f;
604 		ppll->min_frac_feedback_div = 0;
605 		ppll->max_frac_feedback_div = 9;
606 		ppll->min_ref_div = 2;
607 		ppll->max_ref_div = 0x3ff;
608 		ppll->min_feedback_div = 4;
609 		ppll->max_feedback_div = 0xfff;
610 		ppll->best_vco = 0;
611 
612 		for (i = 1; i < AMDGPU_MAX_PPLL; i++)
613 			adev->clock.ppll[i] = *ppll;
614 
615 		/* system clock */
616 		spll->reference_freq =
617 			le16_to_cpu(firmware_info->info_21.usCoreReferenceClock);
618 		spll->reference_div = 0;
619 
620 		spll->pll_out_min =
621 		    le16_to_cpu(firmware_info->info.usMinEngineClockPLL_Output);
622 		spll->pll_out_max =
623 		    le32_to_cpu(firmware_info->info.ulMaxEngineClockPLL_Output);
624 
625 		/* ??? */
626 		if (spll->pll_out_min == 0)
627 			spll->pll_out_min = 64800;
628 
629 		spll->pll_in_min =
630 		    le16_to_cpu(firmware_info->info.usMinEngineClockPLL_Input);
631 		spll->pll_in_max =
632 		    le16_to_cpu(firmware_info->info.usMaxEngineClockPLL_Input);
633 
634 		spll->min_post_div = 1;
635 		spll->max_post_div = 1;
636 		spll->min_ref_div = 2;
637 		spll->max_ref_div = 0xff;
638 		spll->min_feedback_div = 4;
639 		spll->max_feedback_div = 0xff;
640 		spll->best_vco = 0;
641 
642 		/* memory clock */
643 		mpll->reference_freq =
644 			le16_to_cpu(firmware_info->info_21.usMemoryReferenceClock);
645 		mpll->reference_div = 0;
646 
647 		mpll->pll_out_min =
648 		    le16_to_cpu(firmware_info->info.usMinMemoryClockPLL_Output);
649 		mpll->pll_out_max =
650 		    le32_to_cpu(firmware_info->info.ulMaxMemoryClockPLL_Output);
651 
652 		/* ??? */
653 		if (mpll->pll_out_min == 0)
654 			mpll->pll_out_min = 64800;
655 
656 		mpll->pll_in_min =
657 		    le16_to_cpu(firmware_info->info.usMinMemoryClockPLL_Input);
658 		mpll->pll_in_max =
659 		    le16_to_cpu(firmware_info->info.usMaxMemoryClockPLL_Input);
660 
661 		adev->clock.default_sclk =
662 		    le32_to_cpu(firmware_info->info.ulDefaultEngineClock);
663 		adev->clock.default_mclk =
664 		    le32_to_cpu(firmware_info->info.ulDefaultMemoryClock);
665 
666 		mpll->min_post_div = 1;
667 		mpll->max_post_div = 1;
668 		mpll->min_ref_div = 2;
669 		mpll->max_ref_div = 0xff;
670 		mpll->min_feedback_div = 4;
671 		mpll->max_feedback_div = 0xff;
672 		mpll->best_vco = 0;
673 
674 		/* disp clock */
675 		adev->clock.default_dispclk =
676 			le32_to_cpu(firmware_info->info_21.ulDefaultDispEngineClkFreq);
677 		/* set a reasonable default for DP */
678 		if (adev->clock.default_dispclk < 53900) {
679 			DRM_DEBUG("Changing default dispclk from %dMhz to 600Mhz\n",
680 				  adev->clock.default_dispclk / 100);
681 			adev->clock.default_dispclk = 60000;
682 		} else if (adev->clock.default_dispclk <= 60000) {
683 			DRM_DEBUG("Changing default dispclk from %dMhz to 625Mhz\n",
684 				  adev->clock.default_dispclk / 100);
685 			adev->clock.default_dispclk = 62500;
686 		}
687 		adev->clock.dp_extclk =
688 			le16_to_cpu(firmware_info->info_21.usUniphyDPModeExtClkFreq);
689 		adev->clock.current_dispclk = adev->clock.default_dispclk;
690 
691 		adev->clock.max_pixel_clock = le16_to_cpu(firmware_info->info.usMaxPixelClock);
692 		if (adev->clock.max_pixel_clock == 0)
693 			adev->clock.max_pixel_clock = 40000;
694 
695 		/* not technically a clock, but... */
696 		adev->mode_info.firmware_flags =
697 			le16_to_cpu(firmware_info->info.usFirmwareCapability.susAccess);
698 
699 		ret = 0;
700 	}
701 
702 	adev->pm.current_sclk = adev->clock.default_sclk;
703 	adev->pm.current_mclk = adev->clock.default_mclk;
704 
705 	return ret;
706 }
707 
708 union gfx_info {
709 	ATOM_GFX_INFO_V2_1 info;
710 };
711 
712 int amdgpu_atombios_get_gfx_info(struct amdgpu_device *adev)
713 {
714 	struct amdgpu_mode_info *mode_info = &adev->mode_info;
715 	int index = GetIndexIntoMasterTable(DATA, GFX_Info);
716 	uint8_t frev, crev;
717 	uint16_t data_offset;
718 	int ret = -EINVAL;
719 
720 	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
721 				   &frev, &crev, &data_offset)) {
722 		union gfx_info *gfx_info = (union gfx_info *)
723 			(mode_info->atom_context->bios + data_offset);
724 
725 		adev->gfx.config.max_shader_engines = gfx_info->info.max_shader_engines;
726 		adev->gfx.config.max_tile_pipes = gfx_info->info.max_tile_pipes;
727 		adev->gfx.config.max_cu_per_sh = gfx_info->info.max_cu_per_sh;
728 		adev->gfx.config.max_sh_per_se = gfx_info->info.max_sh_per_se;
729 		adev->gfx.config.max_backends_per_se = gfx_info->info.max_backends_per_se;
730 		adev->gfx.config.max_texture_channel_caches =
731 			gfx_info->info.max_texture_channel_caches;
732 
733 		ret = 0;
734 	}
735 	return ret;
736 }
737 
738 union igp_info {
739 	struct _ATOM_INTEGRATED_SYSTEM_INFO info;
740 	struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2;
741 	struct _ATOM_INTEGRATED_SYSTEM_INFO_V6 info_6;
742 	struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_7 info_7;
743 	struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_8 info_8;
744 	struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_9 info_9;
745 };
746 
747 /*
748  * Return vram width from integrated system info table, if available,
749  * or 0 if not.
750  */
751 int amdgpu_atombios_get_vram_width(struct amdgpu_device *adev)
752 {
753 	struct amdgpu_mode_info *mode_info = &adev->mode_info;
754 	int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo);
755 	u16 data_offset, size;
756 	union igp_info *igp_info;
757 	u8 frev, crev;
758 
759 	/* get any igp specific overrides */
760 	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, &size,
761 				   &frev, &crev, &data_offset)) {
762 		igp_info = (union igp_info *)
763 			(mode_info->atom_context->bios + data_offset);
764 		switch (crev) {
765 		case 8:
766 		case 9:
767 			return igp_info->info_8.ucUMAChannelNumber * 64;
768 		default:
769 			return 0;
770 		}
771 	}
772 
773 	return 0;
774 }
775 
776 static void amdgpu_atombios_get_igp_ss_overrides(struct amdgpu_device *adev,
777 						 struct amdgpu_atom_ss *ss,
778 						 int id)
779 {
780 	struct amdgpu_mode_info *mode_info = &adev->mode_info;
781 	int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo);
782 	u16 data_offset, size;
783 	union igp_info *igp_info;
784 	u8 frev, crev;
785 	u16 percentage = 0, rate = 0;
786 
787 	/* get any igp specific overrides */
788 	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, &size,
789 				   &frev, &crev, &data_offset)) {
790 		igp_info = (union igp_info *)
791 			(mode_info->atom_context->bios + data_offset);
792 		switch (crev) {
793 		case 6:
794 			switch (id) {
795 			case ASIC_INTERNAL_SS_ON_TMDS:
796 				percentage = le16_to_cpu(igp_info->info_6.usDVISSPercentage);
797 				rate = le16_to_cpu(igp_info->info_6.usDVISSpreadRateIn10Hz);
798 				break;
799 			case ASIC_INTERNAL_SS_ON_HDMI:
800 				percentage = le16_to_cpu(igp_info->info_6.usHDMISSPercentage);
801 				rate = le16_to_cpu(igp_info->info_6.usHDMISSpreadRateIn10Hz);
802 				break;
803 			case ASIC_INTERNAL_SS_ON_LVDS:
804 				percentage = le16_to_cpu(igp_info->info_6.usLvdsSSPercentage);
805 				rate = le16_to_cpu(igp_info->info_6.usLvdsSSpreadRateIn10Hz);
806 				break;
807 			}
808 			break;
809 		case 7:
810 			switch (id) {
811 			case ASIC_INTERNAL_SS_ON_TMDS:
812 				percentage = le16_to_cpu(igp_info->info_7.usDVISSPercentage);
813 				rate = le16_to_cpu(igp_info->info_7.usDVISSpreadRateIn10Hz);
814 				break;
815 			case ASIC_INTERNAL_SS_ON_HDMI:
816 				percentage = le16_to_cpu(igp_info->info_7.usHDMISSPercentage);
817 				rate = le16_to_cpu(igp_info->info_7.usHDMISSpreadRateIn10Hz);
818 				break;
819 			case ASIC_INTERNAL_SS_ON_LVDS:
820 				percentage = le16_to_cpu(igp_info->info_7.usLvdsSSPercentage);
821 				rate = le16_to_cpu(igp_info->info_7.usLvdsSSpreadRateIn10Hz);
822 				break;
823 			}
824 			break;
825 		case 8:
826 			switch (id) {
827 			case ASIC_INTERNAL_SS_ON_TMDS:
828 				percentage = le16_to_cpu(igp_info->info_8.usDVISSPercentage);
829 				rate = le16_to_cpu(igp_info->info_8.usDVISSpreadRateIn10Hz);
830 				break;
831 			case ASIC_INTERNAL_SS_ON_HDMI:
832 				percentage = le16_to_cpu(igp_info->info_8.usHDMISSPercentage);
833 				rate = le16_to_cpu(igp_info->info_8.usHDMISSpreadRateIn10Hz);
834 				break;
835 			case ASIC_INTERNAL_SS_ON_LVDS:
836 				percentage = le16_to_cpu(igp_info->info_8.usLvdsSSPercentage);
837 				rate = le16_to_cpu(igp_info->info_8.usLvdsSSpreadRateIn10Hz);
838 				break;
839 			}
840 			break;
841 		case 9:
842 			switch (id) {
843 			case ASIC_INTERNAL_SS_ON_TMDS:
844 				percentage = le16_to_cpu(igp_info->info_9.usDVISSPercentage);
845 				rate = le16_to_cpu(igp_info->info_9.usDVISSpreadRateIn10Hz);
846 				break;
847 			case ASIC_INTERNAL_SS_ON_HDMI:
848 				percentage = le16_to_cpu(igp_info->info_9.usHDMISSPercentage);
849 				rate = le16_to_cpu(igp_info->info_9.usHDMISSpreadRateIn10Hz);
850 				break;
851 			case ASIC_INTERNAL_SS_ON_LVDS:
852 				percentage = le16_to_cpu(igp_info->info_9.usLvdsSSPercentage);
853 				rate = le16_to_cpu(igp_info->info_9.usLvdsSSpreadRateIn10Hz);
854 				break;
855 			}
856 			break;
857 		default:
858 			DRM_ERROR("Unsupported IGP table: %d %d\n", frev, crev);
859 			break;
860 		}
861 		if (percentage)
862 			ss->percentage = percentage;
863 		if (rate)
864 			ss->rate = rate;
865 	}
866 }
867 
868 union asic_ss_info {
869 	struct _ATOM_ASIC_INTERNAL_SS_INFO info;
870 	struct _ATOM_ASIC_INTERNAL_SS_INFO_V2 info_2;
871 	struct _ATOM_ASIC_INTERNAL_SS_INFO_V3 info_3;
872 };
873 
874 union asic_ss_assignment {
875 	struct _ATOM_ASIC_SS_ASSIGNMENT v1;
876 	struct _ATOM_ASIC_SS_ASSIGNMENT_V2 v2;
877 	struct _ATOM_ASIC_SS_ASSIGNMENT_V3 v3;
878 };
879 
880 bool amdgpu_atombios_get_asic_ss_info(struct amdgpu_device *adev,
881 				      struct amdgpu_atom_ss *ss,
882 				      int id, u32 clock)
883 {
884 	struct amdgpu_mode_info *mode_info = &adev->mode_info;
885 	int index = GetIndexIntoMasterTable(DATA, ASIC_InternalSS_Info);
886 	uint16_t data_offset, size;
887 	union asic_ss_info *ss_info;
888 	union asic_ss_assignment *ss_assign;
889 	uint8_t frev, crev;
890 	int i, num_indices;
891 
892 	if (id == ASIC_INTERNAL_MEMORY_SS) {
893 		if (!(adev->mode_info.firmware_flags & ATOM_BIOS_INFO_MEMORY_CLOCK_SS_SUPPORT))
894 			return false;
895 	}
896 	if (id == ASIC_INTERNAL_ENGINE_SS) {
897 		if (!(adev->mode_info.firmware_flags & ATOM_BIOS_INFO_ENGINE_CLOCK_SS_SUPPORT))
898 			return false;
899 	}
900 
901 	memset(ss, 0, sizeof(struct amdgpu_atom_ss));
902 	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, &size,
903 				   &frev, &crev, &data_offset)) {
904 
905 		ss_info =
906 			(union asic_ss_info *)(mode_info->atom_context->bios + data_offset);
907 
908 		switch (frev) {
909 		case 1:
910 			num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) /
911 				sizeof(ATOM_ASIC_SS_ASSIGNMENT);
912 
913 			ss_assign = (union asic_ss_assignment *)((u8 *)&ss_info->info.asSpreadSpectrum[0]);
914 			for (i = 0; i < num_indices; i++) {
915 				if ((ss_assign->v1.ucClockIndication == id) &&
916 				    (clock <= le32_to_cpu(ss_assign->v1.ulTargetClockRange))) {
917 					ss->percentage =
918 						le16_to_cpu(ss_assign->v1.usSpreadSpectrumPercentage);
919 					ss->type = ss_assign->v1.ucSpreadSpectrumMode;
920 					ss->rate = le16_to_cpu(ss_assign->v1.usSpreadRateInKhz);
921 					ss->percentage_divider = 100;
922 					return true;
923 				}
924 				ss_assign = (union asic_ss_assignment *)
925 					((u8 *)ss_assign + sizeof(ATOM_ASIC_SS_ASSIGNMENT));
926 			}
927 			break;
928 		case 2:
929 			num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) /
930 				sizeof(ATOM_ASIC_SS_ASSIGNMENT_V2);
931 			ss_assign = (union asic_ss_assignment *)((u8 *)&ss_info->info_2.asSpreadSpectrum[0]);
932 			for (i = 0; i < num_indices; i++) {
933 				if ((ss_assign->v2.ucClockIndication == id) &&
934 				    (clock <= le32_to_cpu(ss_assign->v2.ulTargetClockRange))) {
935 					ss->percentage =
936 						le16_to_cpu(ss_assign->v2.usSpreadSpectrumPercentage);
937 					ss->type = ss_assign->v2.ucSpreadSpectrumMode;
938 					ss->rate = le16_to_cpu(ss_assign->v2.usSpreadRateIn10Hz);
939 					ss->percentage_divider = 100;
940 					if ((crev == 2) &&
941 					    ((id == ASIC_INTERNAL_ENGINE_SS) ||
942 					     (id == ASIC_INTERNAL_MEMORY_SS)))
943 						ss->rate /= 100;
944 					return true;
945 				}
946 				ss_assign = (union asic_ss_assignment *)
947 					((u8 *)ss_assign + sizeof(ATOM_ASIC_SS_ASSIGNMENT_V2));
948 			}
949 			break;
950 		case 3:
951 			num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) /
952 				sizeof(ATOM_ASIC_SS_ASSIGNMENT_V3);
953 			ss_assign = (union asic_ss_assignment *)((u8 *)&ss_info->info_3.asSpreadSpectrum[0]);
954 			for (i = 0; i < num_indices; i++) {
955 				if ((ss_assign->v3.ucClockIndication == id) &&
956 				    (clock <= le32_to_cpu(ss_assign->v3.ulTargetClockRange))) {
957 					ss->percentage =
958 						le16_to_cpu(ss_assign->v3.usSpreadSpectrumPercentage);
959 					ss->type = ss_assign->v3.ucSpreadSpectrumMode;
960 					ss->rate = le16_to_cpu(ss_assign->v3.usSpreadRateIn10Hz);
961 					if (ss_assign->v3.ucSpreadSpectrumMode &
962 					    SS_MODE_V3_PERCENTAGE_DIV_BY_1000_MASK)
963 						ss->percentage_divider = 1000;
964 					else
965 						ss->percentage_divider = 100;
966 					if ((id == ASIC_INTERNAL_ENGINE_SS) ||
967 					    (id == ASIC_INTERNAL_MEMORY_SS))
968 						ss->rate /= 100;
969 					if (adev->flags & AMD_IS_APU)
970 						amdgpu_atombios_get_igp_ss_overrides(adev, ss, id);
971 					return true;
972 				}
973 				ss_assign = (union asic_ss_assignment *)
974 					((u8 *)ss_assign + sizeof(ATOM_ASIC_SS_ASSIGNMENT_V3));
975 			}
976 			break;
977 		default:
978 			DRM_ERROR("Unsupported ASIC_InternalSS_Info table: %d %d\n", frev, crev);
979 			break;
980 		}
981 
982 	}
983 	return false;
984 }
985 
986 union get_clock_dividers {
987 	struct _COMPUTE_MEMORY_ENGINE_PLL_PARAMETERS v1;
988 	struct _COMPUTE_MEMORY_ENGINE_PLL_PARAMETERS_V2 v2;
989 	struct _COMPUTE_MEMORY_ENGINE_PLL_PARAMETERS_V3 v3;
990 	struct _COMPUTE_MEMORY_ENGINE_PLL_PARAMETERS_V4 v4;
991 	struct _COMPUTE_MEMORY_ENGINE_PLL_PARAMETERS_V5 v5;
992 	struct _COMPUTE_GPU_CLOCK_INPUT_PARAMETERS_V1_6 v6_in;
993 	struct _COMPUTE_GPU_CLOCK_OUTPUT_PARAMETERS_V1_6 v6_out;
994 };
995 
996 int amdgpu_atombios_get_clock_dividers(struct amdgpu_device *adev,
997 				       u8 clock_type,
998 				       u32 clock,
999 				       bool strobe_mode,
1000 				       struct atom_clock_dividers *dividers)
1001 {
1002 	union get_clock_dividers args;
1003 	int index = GetIndexIntoMasterTable(COMMAND, ComputeMemoryEnginePLL);
1004 	u8 frev, crev;
1005 
1006 	memset(&args, 0, sizeof(args));
1007 	memset(dividers, 0, sizeof(struct atom_clock_dividers));
1008 
1009 	if (!amdgpu_atom_parse_cmd_header(adev->mode_info.atom_context, index, &frev, &crev))
1010 		return -EINVAL;
1011 
1012 	switch (crev) {
1013 	case 2:
1014 	case 3:
1015 	case 5:
1016 		/* r6xx, r7xx, evergreen, ni, si.
1017 		 * TODO: add support for asic_type <= CHIP_RV770*/
1018 		if (clock_type == COMPUTE_ENGINE_PLL_PARAM) {
1019 			args.v3.ulClockParams = cpu_to_le32((clock_type << 24) | clock);
1020 
1021 			amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
1022 
1023 			dividers->post_div = args.v3.ucPostDiv;
1024 			dividers->enable_post_div = (args.v3.ucCntlFlag &
1025 						     ATOM_PLL_CNTL_FLAG_PLL_POST_DIV_EN) ? true : false;
1026 			dividers->enable_dithen = (args.v3.ucCntlFlag &
1027 						   ATOM_PLL_CNTL_FLAG_FRACTION_DISABLE) ? false : true;
1028 			dividers->whole_fb_div = le16_to_cpu(args.v3.ulFbDiv.usFbDiv);
1029 			dividers->frac_fb_div = le16_to_cpu(args.v3.ulFbDiv.usFbDivFrac);
1030 			dividers->ref_div = args.v3.ucRefDiv;
1031 			dividers->vco_mode = (args.v3.ucCntlFlag &
1032 					      ATOM_PLL_CNTL_FLAG_MPLL_VCO_MODE) ? 1 : 0;
1033 		} else {
1034 			/* for SI we use ComputeMemoryClockParam for memory plls */
1035 			if (adev->asic_type >= CHIP_TAHITI)
1036 				return -EINVAL;
1037 			args.v5.ulClockParams = cpu_to_le32((clock_type << 24) | clock);
1038 			if (strobe_mode)
1039 				args.v5.ucInputFlag = ATOM_PLL_INPUT_FLAG_PLL_STROBE_MODE_EN;
1040 
1041 			amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
1042 
1043 			dividers->post_div = args.v5.ucPostDiv;
1044 			dividers->enable_post_div = (args.v5.ucCntlFlag &
1045 						     ATOM_PLL_CNTL_FLAG_PLL_POST_DIV_EN) ? true : false;
1046 			dividers->enable_dithen = (args.v5.ucCntlFlag &
1047 						   ATOM_PLL_CNTL_FLAG_FRACTION_DISABLE) ? false : true;
1048 			dividers->whole_fb_div = le16_to_cpu(args.v5.ulFbDiv.usFbDiv);
1049 			dividers->frac_fb_div = le16_to_cpu(args.v5.ulFbDiv.usFbDivFrac);
1050 			dividers->ref_div = args.v5.ucRefDiv;
1051 			dividers->vco_mode = (args.v5.ucCntlFlag &
1052 					      ATOM_PLL_CNTL_FLAG_MPLL_VCO_MODE) ? 1 : 0;
1053 		}
1054 		break;
1055 	case 4:
1056 		/* fusion */
1057 		args.v4.ulClock = cpu_to_le32(clock);	/* 10 khz */
1058 
1059 		amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
1060 
1061 		dividers->post_divider = dividers->post_div = args.v4.ucPostDiv;
1062 		dividers->real_clock = le32_to_cpu(args.v4.ulClock);
1063 		break;
1064 	case 6:
1065 		/* CI */
1066 		/* COMPUTE_GPUCLK_INPUT_FLAG_DEFAULT_GPUCLK, COMPUTE_GPUCLK_INPUT_FLAG_SCLK */
1067 		args.v6_in.ulClock.ulComputeClockFlag = clock_type;
1068 		args.v6_in.ulClock.ulClockFreq = cpu_to_le32(clock);	/* 10 khz */
1069 
1070 		amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
1071 
1072 		dividers->whole_fb_div = le16_to_cpu(args.v6_out.ulFbDiv.usFbDiv);
1073 		dividers->frac_fb_div = le16_to_cpu(args.v6_out.ulFbDiv.usFbDivFrac);
1074 		dividers->ref_div = args.v6_out.ucPllRefDiv;
1075 		dividers->post_div = args.v6_out.ucPllPostDiv;
1076 		dividers->flags = args.v6_out.ucPllCntlFlag;
1077 		dividers->real_clock = le32_to_cpu(args.v6_out.ulClock.ulClock);
1078 		dividers->post_divider = args.v6_out.ulClock.ucPostDiv;
1079 		break;
1080 	default:
1081 		return -EINVAL;
1082 	}
1083 	return 0;
1084 }
1085 
1086 int amdgpu_atombios_get_memory_pll_dividers(struct amdgpu_device *adev,
1087 					    u32 clock,
1088 					    bool strobe_mode,
1089 					    struct atom_mpll_param *mpll_param)
1090 {
1091 	COMPUTE_MEMORY_CLOCK_PARAM_PARAMETERS_V2_1 args;
1092 	int index = GetIndexIntoMasterTable(COMMAND, ComputeMemoryClockParam);
1093 	u8 frev, crev;
1094 
1095 	memset(&args, 0, sizeof(args));
1096 	memset(mpll_param, 0, sizeof(struct atom_mpll_param));
1097 
1098 	if (!amdgpu_atom_parse_cmd_header(adev->mode_info.atom_context, index, &frev, &crev))
1099 		return -EINVAL;
1100 
1101 	switch (frev) {
1102 	case 2:
1103 		switch (crev) {
1104 		case 1:
1105 			/* SI */
1106 			args.ulClock = cpu_to_le32(clock);	/* 10 khz */
1107 			args.ucInputFlag = 0;
1108 			if (strobe_mode)
1109 				args.ucInputFlag |= MPLL_INPUT_FLAG_STROBE_MODE_EN;
1110 
1111 			amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
1112 
1113 			mpll_param->clkfrac = le16_to_cpu(args.ulFbDiv.usFbDivFrac);
1114 			mpll_param->clkf = le16_to_cpu(args.ulFbDiv.usFbDiv);
1115 			mpll_param->post_div = args.ucPostDiv;
1116 			mpll_param->dll_speed = args.ucDllSpeed;
1117 			mpll_param->bwcntl = args.ucBWCntl;
1118 			mpll_param->vco_mode =
1119 				(args.ucPllCntlFlag & MPLL_CNTL_FLAG_VCO_MODE_MASK);
1120 			mpll_param->yclk_sel =
1121 				(args.ucPllCntlFlag & MPLL_CNTL_FLAG_BYPASS_DQ_PLL) ? 1 : 0;
1122 			mpll_param->qdr =
1123 				(args.ucPllCntlFlag & MPLL_CNTL_FLAG_QDR_ENABLE) ? 1 : 0;
1124 			mpll_param->half_rate =
1125 				(args.ucPllCntlFlag & MPLL_CNTL_FLAG_AD_HALF_RATE) ? 1 : 0;
1126 			break;
1127 		default:
1128 			return -EINVAL;
1129 		}
1130 		break;
1131 	default:
1132 		return -EINVAL;
1133 	}
1134 	return 0;
1135 }
1136 
1137 void amdgpu_atombios_set_engine_dram_timings(struct amdgpu_device *adev,
1138 					     u32 eng_clock, u32 mem_clock)
1139 {
1140 	SET_ENGINE_CLOCK_PS_ALLOCATION args;
1141 	int index = GetIndexIntoMasterTable(COMMAND, DynamicMemorySettings);
1142 	u32 tmp;
1143 
1144 	memset(&args, 0, sizeof(args));
1145 
1146 	tmp = eng_clock & SET_CLOCK_FREQ_MASK;
1147 	tmp |= (COMPUTE_ENGINE_PLL_PARAM << 24);
1148 
1149 	args.ulTargetEngineClock = cpu_to_le32(tmp);
1150 	if (mem_clock)
1151 		args.sReserved.ulClock = cpu_to_le32(mem_clock & SET_CLOCK_FREQ_MASK);
1152 
1153 	amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
1154 }
1155 
1156 void amdgpu_atombios_get_default_voltages(struct amdgpu_device *adev,
1157 					  u16 *vddc, u16 *vddci, u16 *mvdd)
1158 {
1159 	struct amdgpu_mode_info *mode_info = &adev->mode_info;
1160 	int index = GetIndexIntoMasterTable(DATA, FirmwareInfo);
1161 	u8 frev, crev;
1162 	u16 data_offset;
1163 	union firmware_info *firmware_info;
1164 
1165 	*vddc = 0;
1166 	*vddci = 0;
1167 	*mvdd = 0;
1168 
1169 	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
1170 				   &frev, &crev, &data_offset)) {
1171 		firmware_info =
1172 			(union firmware_info *)(mode_info->atom_context->bios +
1173 						data_offset);
1174 		*vddc = le16_to_cpu(firmware_info->info_14.usBootUpVDDCVoltage);
1175 		if ((frev == 2) && (crev >= 2)) {
1176 			*vddci = le16_to_cpu(firmware_info->info_22.usBootUpVDDCIVoltage);
1177 			*mvdd = le16_to_cpu(firmware_info->info_22.usBootUpMVDDCVoltage);
1178 		}
1179 	}
1180 }
1181 
1182 union set_voltage {
1183 	struct _SET_VOLTAGE_PS_ALLOCATION alloc;
1184 	struct _SET_VOLTAGE_PARAMETERS v1;
1185 	struct _SET_VOLTAGE_PARAMETERS_V2 v2;
1186 	struct _SET_VOLTAGE_PARAMETERS_V1_3 v3;
1187 };
1188 
1189 int amdgpu_atombios_get_max_vddc(struct amdgpu_device *adev, u8 voltage_type,
1190 			     u16 voltage_id, u16 *voltage)
1191 {
1192 	union set_voltage args;
1193 	int index = GetIndexIntoMasterTable(COMMAND, SetVoltage);
1194 	u8 frev, crev;
1195 
1196 	if (!amdgpu_atom_parse_cmd_header(adev->mode_info.atom_context, index, &frev, &crev))
1197 		return -EINVAL;
1198 
1199 	switch (crev) {
1200 	case 1:
1201 		return -EINVAL;
1202 	case 2:
1203 		args.v2.ucVoltageType = SET_VOLTAGE_GET_MAX_VOLTAGE;
1204 		args.v2.ucVoltageMode = 0;
1205 		args.v2.usVoltageLevel = 0;
1206 
1207 		amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
1208 
1209 		*voltage = le16_to_cpu(args.v2.usVoltageLevel);
1210 		break;
1211 	case 3:
1212 		args.v3.ucVoltageType = voltage_type;
1213 		args.v3.ucVoltageMode = ATOM_GET_VOLTAGE_LEVEL;
1214 		args.v3.usVoltageLevel = cpu_to_le16(voltage_id);
1215 
1216 		amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args);
1217 
1218 		*voltage = le16_to_cpu(args.v3.usVoltageLevel);
1219 		break;
1220 	default:
1221 		DRM_ERROR("Unknown table version %d, %d\n", frev, crev);
1222 		return -EINVAL;
1223 	}
1224 
1225 	return 0;
1226 }
1227 
1228 int amdgpu_atombios_get_leakage_vddc_based_on_leakage_idx(struct amdgpu_device *adev,
1229 						      u16 *voltage,
1230 						      u16 leakage_idx)
1231 {
1232 	return amdgpu_atombios_get_max_vddc(adev, VOLTAGE_TYPE_VDDC, leakage_idx, voltage);
1233 }
1234 
1235 union voltage_object_info {
1236 	struct _ATOM_VOLTAGE_OBJECT_INFO v1;
1237 	struct _ATOM_VOLTAGE_OBJECT_INFO_V2 v2;
1238 	struct _ATOM_VOLTAGE_OBJECT_INFO_V3_1 v3;
1239 };
1240 
1241 union voltage_object {
1242 	struct _ATOM_VOLTAGE_OBJECT v1;
1243 	struct _ATOM_VOLTAGE_OBJECT_V2 v2;
1244 	union _ATOM_VOLTAGE_OBJECT_V3 v3;
1245 };
1246 
1247 
1248 static ATOM_VOLTAGE_OBJECT_V3 *amdgpu_atombios_lookup_voltage_object_v3(ATOM_VOLTAGE_OBJECT_INFO_V3_1 *v3,
1249 									u8 voltage_type, u8 voltage_mode)
1250 {
1251 	u32 size = le16_to_cpu(v3->sHeader.usStructureSize);
1252 	u32 offset = offsetof(ATOM_VOLTAGE_OBJECT_INFO_V3_1, asVoltageObj[0]);
1253 	u8 *start = (u8 *)v3;
1254 
1255 	while (offset < size) {
1256 		ATOM_VOLTAGE_OBJECT_V3 *vo = (ATOM_VOLTAGE_OBJECT_V3 *)(start + offset);
1257 		if ((vo->asGpioVoltageObj.sHeader.ucVoltageType == voltage_type) &&
1258 		    (vo->asGpioVoltageObj.sHeader.ucVoltageMode == voltage_mode))
1259 			return vo;
1260 		offset += le16_to_cpu(vo->asGpioVoltageObj.sHeader.usSize);
1261 	}
1262 	return NULL;
1263 }
1264 
1265 int amdgpu_atombios_get_svi2_info(struct amdgpu_device *adev,
1266 			      u8 voltage_type,
1267 			      u8 *svd_gpio_id, u8 *svc_gpio_id)
1268 {
1269 	int index = GetIndexIntoMasterTable(DATA, VoltageObjectInfo);
1270 	u8 frev, crev;
1271 	u16 data_offset, size;
1272 	union voltage_object_info *voltage_info;
1273 	union voltage_object *voltage_object = NULL;
1274 
1275 	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, &size,
1276 				   &frev, &crev, &data_offset)) {
1277 		voltage_info = (union voltage_object_info *)
1278 			(adev->mode_info.atom_context->bios + data_offset);
1279 
1280 		switch (frev) {
1281 		case 3:
1282 			switch (crev) {
1283 			case 1:
1284 				voltage_object = (union voltage_object *)
1285 					amdgpu_atombios_lookup_voltage_object_v3(&voltage_info->v3,
1286 								      voltage_type,
1287 								      VOLTAGE_OBJ_SVID2);
1288 				if (voltage_object) {
1289 					*svd_gpio_id = voltage_object->v3.asSVID2Obj.ucSVDGpioId;
1290 					*svc_gpio_id = voltage_object->v3.asSVID2Obj.ucSVCGpioId;
1291 				} else {
1292 					return -EINVAL;
1293 				}
1294 				break;
1295 			default:
1296 				DRM_ERROR("unknown voltage object table\n");
1297 				return -EINVAL;
1298 			}
1299 			break;
1300 		default:
1301 			DRM_ERROR("unknown voltage object table\n");
1302 			return -EINVAL;
1303 		}
1304 
1305 	}
1306 	return 0;
1307 }
1308 
1309 bool
1310 amdgpu_atombios_is_voltage_gpio(struct amdgpu_device *adev,
1311 				u8 voltage_type, u8 voltage_mode)
1312 {
1313 	int index = GetIndexIntoMasterTable(DATA, VoltageObjectInfo);
1314 	u8 frev, crev;
1315 	u16 data_offset, size;
1316 	union voltage_object_info *voltage_info;
1317 
1318 	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, &size,
1319 				   &frev, &crev, &data_offset)) {
1320 		voltage_info = (union voltage_object_info *)
1321 			(adev->mode_info.atom_context->bios + data_offset);
1322 
1323 		switch (frev) {
1324 		case 3:
1325 			switch (crev) {
1326 			case 1:
1327 				if (amdgpu_atombios_lookup_voltage_object_v3(&voltage_info->v3,
1328 								  voltage_type, voltage_mode))
1329 					return true;
1330 				break;
1331 			default:
1332 				DRM_ERROR("unknown voltage object table\n");
1333 				return false;
1334 			}
1335 			break;
1336 		default:
1337 			DRM_ERROR("unknown voltage object table\n");
1338 			return false;
1339 		}
1340 
1341 	}
1342 	return false;
1343 }
1344 
1345 int amdgpu_atombios_get_voltage_table(struct amdgpu_device *adev,
1346 				      u8 voltage_type, u8 voltage_mode,
1347 				      struct atom_voltage_table *voltage_table)
1348 {
1349 	int index = GetIndexIntoMasterTable(DATA, VoltageObjectInfo);
1350 	u8 frev, crev;
1351 	u16 data_offset, size;
1352 	int i;
1353 	union voltage_object_info *voltage_info;
1354 	union voltage_object *voltage_object = NULL;
1355 
1356 	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, &size,
1357 				   &frev, &crev, &data_offset)) {
1358 		voltage_info = (union voltage_object_info *)
1359 			(adev->mode_info.atom_context->bios + data_offset);
1360 
1361 		switch (frev) {
1362 		case 3:
1363 			switch (crev) {
1364 			case 1:
1365 				voltage_object = (union voltage_object *)
1366 					amdgpu_atombios_lookup_voltage_object_v3(&voltage_info->v3,
1367 								      voltage_type, voltage_mode);
1368 				if (voltage_object) {
1369 					ATOM_GPIO_VOLTAGE_OBJECT_V3 *gpio =
1370 						&voltage_object->v3.asGpioVoltageObj;
1371 					VOLTAGE_LUT_ENTRY_V2 *lut;
1372 					if (gpio->ucGpioEntryNum > MAX_VOLTAGE_ENTRIES)
1373 						return -EINVAL;
1374 					lut = &gpio->asVolGpioLut[0];
1375 					for (i = 0; i < gpio->ucGpioEntryNum; i++) {
1376 						voltage_table->entries[i].value =
1377 							le16_to_cpu(lut->usVoltageValue);
1378 						voltage_table->entries[i].smio_low =
1379 							le32_to_cpu(lut->ulVoltageId);
1380 						lut = (VOLTAGE_LUT_ENTRY_V2 *)
1381 							((u8 *)lut + sizeof(VOLTAGE_LUT_ENTRY_V2));
1382 					}
1383 					voltage_table->mask_low = le32_to_cpu(gpio->ulGpioMaskVal);
1384 					voltage_table->count = gpio->ucGpioEntryNum;
1385 					voltage_table->phase_delay = gpio->ucPhaseDelay;
1386 					return 0;
1387 				}
1388 				break;
1389 			default:
1390 				DRM_ERROR("unknown voltage object table\n");
1391 				return -EINVAL;
1392 			}
1393 			break;
1394 		default:
1395 			DRM_ERROR("unknown voltage object table\n");
1396 			return -EINVAL;
1397 		}
1398 	}
1399 	return -EINVAL;
1400 }
1401 
1402 union vram_info {
1403 	struct _ATOM_VRAM_INFO_V3 v1_3;
1404 	struct _ATOM_VRAM_INFO_V4 v1_4;
1405 	struct _ATOM_VRAM_INFO_HEADER_V2_1 v2_1;
1406 };
1407 
1408 #define MEM_ID_MASK           0xff000000
1409 #define MEM_ID_SHIFT          24
1410 #define CLOCK_RANGE_MASK      0x00ffffff
1411 #define CLOCK_RANGE_SHIFT     0
1412 #define LOW_NIBBLE_MASK       0xf
1413 #define DATA_EQU_PREV         0
1414 #define DATA_FROM_TABLE       4
1415 
1416 int amdgpu_atombios_init_mc_reg_table(struct amdgpu_device *adev,
1417 				      u8 module_index,
1418 				      struct atom_mc_reg_table *reg_table)
1419 {
1420 	int index = GetIndexIntoMasterTable(DATA, VRAM_Info);
1421 	u8 frev, crev, num_entries, t_mem_id, num_ranges = 0;
1422 	u32 i = 0, j;
1423 	u16 data_offset, size;
1424 	union vram_info *vram_info;
1425 
1426 	memset(reg_table, 0, sizeof(struct atom_mc_reg_table));
1427 
1428 	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, &size,
1429 				   &frev, &crev, &data_offset)) {
1430 		vram_info = (union vram_info *)
1431 			(adev->mode_info.atom_context->bios + data_offset);
1432 		switch (frev) {
1433 		case 1:
1434 			DRM_ERROR("old table version %d, %d\n", frev, crev);
1435 			return -EINVAL;
1436 		case 2:
1437 			switch (crev) {
1438 			case 1:
1439 				if (module_index < vram_info->v2_1.ucNumOfVRAMModule) {
1440 					ATOM_INIT_REG_BLOCK *reg_block =
1441 						(ATOM_INIT_REG_BLOCK *)
1442 						((u8 *)vram_info + le16_to_cpu(vram_info->v2_1.usMemClkPatchTblOffset));
1443 					ATOM_MEMORY_SETTING_DATA_BLOCK *reg_data =
1444 						(ATOM_MEMORY_SETTING_DATA_BLOCK *)
1445 						((u8 *)reg_block + (2 * sizeof(u16)) +
1446 						 le16_to_cpu(reg_block->usRegIndexTblSize));
1447 					ATOM_INIT_REG_INDEX_FORMAT *format = &reg_block->asRegIndexBuf[0];
1448 					num_entries = (u8)((le16_to_cpu(reg_block->usRegIndexTblSize)) /
1449 							   sizeof(ATOM_INIT_REG_INDEX_FORMAT)) - 1;
1450 					if (num_entries > VBIOS_MC_REGISTER_ARRAY_SIZE)
1451 						return -EINVAL;
1452 					while (i < num_entries) {
1453 						if (format->ucPreRegDataLength & ACCESS_PLACEHOLDER)
1454 							break;
1455 						reg_table->mc_reg_address[i].s1 =
1456 							(u16)(le16_to_cpu(format->usRegIndex));
1457 						reg_table->mc_reg_address[i].pre_reg_data =
1458 							(u8)(format->ucPreRegDataLength);
1459 						i++;
1460 						format = (ATOM_INIT_REG_INDEX_FORMAT *)
1461 							((u8 *)format + sizeof(ATOM_INIT_REG_INDEX_FORMAT));
1462 					}
1463 					reg_table->last = i;
1464 					while ((le32_to_cpu(*(u32 *)reg_data) != END_OF_REG_DATA_BLOCK) &&
1465 					       (num_ranges < VBIOS_MAX_AC_TIMING_ENTRIES)) {
1466 						t_mem_id = (u8)((le32_to_cpu(*(u32 *)reg_data) & MEM_ID_MASK)
1467 								>> MEM_ID_SHIFT);
1468 						if (module_index == t_mem_id) {
1469 							reg_table->mc_reg_table_entry[num_ranges].mclk_max =
1470 								(u32)((le32_to_cpu(*(u32 *)reg_data) & CLOCK_RANGE_MASK)
1471 								      >> CLOCK_RANGE_SHIFT);
1472 							for (i = 0, j = 1; i < reg_table->last; i++) {
1473 								if ((reg_table->mc_reg_address[i].pre_reg_data & LOW_NIBBLE_MASK) == DATA_FROM_TABLE) {
1474 									reg_table->mc_reg_table_entry[num_ranges].mc_data[i] =
1475 										(u32)le32_to_cpu(*((u32 *)reg_data + j));
1476 									j++;
1477 								} else if ((reg_table->mc_reg_address[i].pre_reg_data & LOW_NIBBLE_MASK) == DATA_EQU_PREV) {
1478 									reg_table->mc_reg_table_entry[num_ranges].mc_data[i] =
1479 										reg_table->mc_reg_table_entry[num_ranges].mc_data[i - 1];
1480 								}
1481 							}
1482 							num_ranges++;
1483 						}
1484 						reg_data = (ATOM_MEMORY_SETTING_DATA_BLOCK *)
1485 							((u8 *)reg_data + le16_to_cpu(reg_block->usRegDataBlkSize));
1486 					}
1487 					if (le32_to_cpu(*(u32 *)reg_data) != END_OF_REG_DATA_BLOCK)
1488 						return -EINVAL;
1489 					reg_table->num_entries = num_ranges;
1490 				} else
1491 					return -EINVAL;
1492 				break;
1493 			default:
1494 				DRM_ERROR("Unknown table version %d, %d\n", frev, crev);
1495 				return -EINVAL;
1496 			}
1497 			break;
1498 		default:
1499 			DRM_ERROR("Unknown table version %d, %d\n", frev, crev);
1500 			return -EINVAL;
1501 		}
1502 		return 0;
1503 	}
1504 	return -EINVAL;
1505 }
1506 
1507 bool amdgpu_atombios_has_gpu_virtualization_table(struct amdgpu_device *adev)
1508 {
1509 	int index = GetIndexIntoMasterTable(DATA, GPUVirtualizationInfo);
1510 	u8 frev, crev;
1511 	u16 data_offset, size;
1512 
1513 	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, &size,
1514 					  &frev, &crev, &data_offset))
1515 		return true;
1516 
1517 	return false;
1518 }
1519 
1520 void amdgpu_atombios_scratch_regs_lock(struct amdgpu_device *adev, bool lock)
1521 {
1522 	uint32_t bios_6_scratch;
1523 
1524 	bios_6_scratch = RREG32(adev->bios_scratch_reg_offset + 6);
1525 
1526 	if (lock) {
1527 		bios_6_scratch |= ATOM_S6_CRITICAL_STATE;
1528 		bios_6_scratch &= ~ATOM_S6_ACC_MODE;
1529 	} else {
1530 		bios_6_scratch &= ~ATOM_S6_CRITICAL_STATE;
1531 		bios_6_scratch |= ATOM_S6_ACC_MODE;
1532 	}
1533 
1534 	WREG32(adev->bios_scratch_reg_offset + 6, bios_6_scratch);
1535 }
1536 
1537 static void amdgpu_atombios_scratch_regs_init(struct amdgpu_device *adev)
1538 {
1539 	uint32_t bios_2_scratch, bios_6_scratch;
1540 
1541 	adev->bios_scratch_reg_offset = mmBIOS_SCRATCH_0;
1542 
1543 	bios_2_scratch = RREG32(adev->bios_scratch_reg_offset + 2);
1544 	bios_6_scratch = RREG32(adev->bios_scratch_reg_offset + 6);
1545 
1546 	/* let the bios control the backlight */
1547 	bios_2_scratch &= ~ATOM_S2_VRI_BRIGHT_ENABLE;
1548 
1549 	/* tell the bios not to handle mode switching */
1550 	bios_6_scratch |= ATOM_S6_ACC_BLOCK_DISPLAY_SWITCH;
1551 
1552 	/* clear the vbios dpms state */
1553 	bios_2_scratch &= ~ATOM_S2_DEVICE_DPMS_STATE;
1554 
1555 	WREG32(adev->bios_scratch_reg_offset + 2, bios_2_scratch);
1556 	WREG32(adev->bios_scratch_reg_offset + 6, bios_6_scratch);
1557 }
1558 
1559 void amdgpu_atombios_scratch_regs_engine_hung(struct amdgpu_device *adev,
1560 					      bool hung)
1561 {
1562 	u32 tmp = RREG32(adev->bios_scratch_reg_offset + 3);
1563 
1564 	if (hung)
1565 		tmp |= ATOM_S3_ASIC_GUI_ENGINE_HUNG;
1566 	else
1567 		tmp &= ~ATOM_S3_ASIC_GUI_ENGINE_HUNG;
1568 
1569 	WREG32(adev->bios_scratch_reg_offset + 3, tmp);
1570 }
1571 
1572 void amdgpu_atombios_scratch_regs_set_backlight_level(struct amdgpu_device *adev,
1573 						      u32 backlight_level)
1574 {
1575 	u32 tmp = RREG32(adev->bios_scratch_reg_offset + 2);
1576 
1577 	tmp &= ~ATOM_S2_CURRENT_BL_LEVEL_MASK;
1578 	tmp |= (backlight_level << ATOM_S2_CURRENT_BL_LEVEL_SHIFT) &
1579 		ATOM_S2_CURRENT_BL_LEVEL_MASK;
1580 
1581 	WREG32(adev->bios_scratch_reg_offset + 2, tmp);
1582 }
1583 
1584 bool amdgpu_atombios_scratch_need_asic_init(struct amdgpu_device *adev)
1585 {
1586 	u32 tmp = RREG32(adev->bios_scratch_reg_offset + 7);
1587 
1588 	if (tmp & ATOM_S7_ASIC_INIT_COMPLETE_MASK)
1589 		return false;
1590 	else
1591 		return true;
1592 }
1593 
1594 /* Atom needs data in little endian format so swap as appropriate when copying
1595  * data to or from atom. Note that atom operates on dw units.
1596  *
1597  * Use to_le=true when sending data to atom and provide at least
1598  * ALIGN(num_bytes,4) bytes in the dst buffer.
1599  *
1600  * Use to_le=false when receiving data from atom and provide ALIGN(num_bytes,4)
1601  * byes in the src buffer.
1602  */
1603 void amdgpu_atombios_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le)
1604 {
1605 #ifdef __BIG_ENDIAN
1606 	u32 src_tmp[5], dst_tmp[5];
1607 	int i;
1608 	u8 align_num_bytes = ALIGN(num_bytes, 4);
1609 
1610 	if (to_le) {
1611 		memcpy(src_tmp, src, num_bytes);
1612 		for (i = 0; i < align_num_bytes / 4; i++)
1613 			dst_tmp[i] = cpu_to_le32(src_tmp[i]);
1614 		memcpy(dst, dst_tmp, align_num_bytes);
1615 	} else {
1616 		memcpy(src_tmp, src, align_num_bytes);
1617 		for (i = 0; i < align_num_bytes / 4; i++)
1618 			dst_tmp[i] = le32_to_cpu(src_tmp[i]);
1619 		memcpy(dst, dst_tmp, num_bytes);
1620 	}
1621 #else
1622 	memcpy(dst, src, num_bytes);
1623 #endif
1624 }
1625 
1626 static int amdgpu_atombios_allocate_fb_scratch(struct amdgpu_device *adev)
1627 {
1628 	struct atom_context *ctx = adev->mode_info.atom_context;
1629 	int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware);
1630 	uint16_t data_offset;
1631 	int usage_bytes = 0;
1632 	struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage;
1633 	u64 start_addr;
1634 	u64 size;
1635 
1636 	if (amdgpu_atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) {
1637 		firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset);
1638 
1639 		DRM_DEBUG("atom firmware requested %08x %dkb\n",
1640 			  le32_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware),
1641 			  le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb));
1642 
1643 		start_addr = firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware;
1644 		size = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb;
1645 
1646 		if ((uint32_t)(start_addr & ATOM_VRAM_OPERATION_FLAGS_MASK) ==
1647 			(uint32_t)(ATOM_VRAM_BLOCK_SRIOV_MSG_SHARE_RESERVATION <<
1648 			ATOM_VRAM_OPERATION_FLAGS_SHIFT)) {
1649 			/* Firmware request VRAM reservation for SR-IOV */
1650 			adev->mman.fw_vram_usage_start_offset = (start_addr &
1651 				(~ATOM_VRAM_OPERATION_FLAGS_MASK)) << 10;
1652 			adev->mman.fw_vram_usage_size = size << 10;
1653 			/* Use the default scratch size */
1654 			usage_bytes = 0;
1655 		} else {
1656 			usage_bytes = le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb) * 1024;
1657 		}
1658 	}
1659 	ctx->scratch_size_bytes = 0;
1660 	if (usage_bytes == 0)
1661 		usage_bytes = 20 * 1024;
1662 	/* allocate some scratch memory */
1663 	ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
1664 	if (!ctx->scratch)
1665 		return -ENOMEM;
1666 	ctx->scratch_size_bytes = usage_bytes;
1667 	return 0;
1668 }
1669 
1670 /* ATOM accessor methods */
1671 /*
1672  * ATOM is an interpreted byte code stored in tables in the vbios.  The
1673  * driver registers callbacks to access registers and the interpreter
1674  * in the driver parses the tables and executes then to program specific
1675  * actions (set display modes, asic init, etc.).  See amdgpu_atombios.c,
1676  * atombios.h, and atom.c
1677  */
1678 
1679 /**
1680  * cail_pll_read - read PLL register
1681  *
1682  * @info: atom card_info pointer
1683  * @reg: PLL register offset
1684  *
1685  * Provides a PLL register accessor for the atom interpreter (r4xx+).
1686  * Returns the value of the PLL register.
1687  */
1688 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
1689 {
1690 	return 0;
1691 }
1692 
1693 /**
1694  * cail_pll_write - write PLL register
1695  *
1696  * @info: atom card_info pointer
1697  * @reg: PLL register offset
1698  * @val: value to write to the pll register
1699  *
1700  * Provides a PLL register accessor for the atom interpreter (r4xx+).
1701  */
1702 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
1703 {
1704 
1705 }
1706 
1707 /**
1708  * cail_mc_read - read MC (Memory Controller) register
1709  *
1710  * @info: atom card_info pointer
1711  * @reg: MC register offset
1712  *
1713  * Provides an MC register accessor for the atom interpreter (r4xx+).
1714  * Returns the value of the MC register.
1715  */
1716 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
1717 {
1718 	return 0;
1719 }
1720 
1721 /**
1722  * cail_mc_write - write MC (Memory Controller) register
1723  *
1724  * @info: atom card_info pointer
1725  * @reg: MC register offset
1726  * @val: value to write to the pll register
1727  *
1728  * Provides a MC register accessor for the atom interpreter (r4xx+).
1729  */
1730 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
1731 {
1732 
1733 }
1734 
1735 /**
1736  * cail_reg_write - write MMIO register
1737  *
1738  * @info: atom card_info pointer
1739  * @reg: MMIO register offset
1740  * @val: value to write to the pll register
1741  *
1742  * Provides a MMIO register accessor for the atom interpreter (r4xx+).
1743  */
1744 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
1745 {
1746 	struct amdgpu_device *adev = drm_to_adev(info->dev);
1747 
1748 	WREG32(reg, val);
1749 }
1750 
1751 /**
1752  * cail_reg_read - read MMIO register
1753  *
1754  * @info: atom card_info pointer
1755  * @reg: MMIO register offset
1756  *
1757  * Provides an MMIO register accessor for the atom interpreter (r4xx+).
1758  * Returns the value of the MMIO register.
1759  */
1760 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
1761 {
1762 	struct amdgpu_device *adev = drm_to_adev(info->dev);
1763 	uint32_t r;
1764 
1765 	r = RREG32(reg);
1766 	return r;
1767 }
1768 
1769 static ssize_t amdgpu_atombios_get_vbios_version(struct device *dev,
1770 						 struct device_attribute *attr,
1771 						 char *buf)
1772 {
1773 	struct drm_device *ddev = dev_get_drvdata(dev);
1774 	struct amdgpu_device *adev = drm_to_adev(ddev);
1775 	struct atom_context *ctx = adev->mode_info.atom_context;
1776 
1777 	return sysfs_emit(buf, "%s\n", ctx->vbios_version);
1778 }
1779 
1780 static DEVICE_ATTR(vbios_version, 0444, amdgpu_atombios_get_vbios_version,
1781 		   NULL);
1782 
1783 static struct attribute *amdgpu_vbios_version_attrs[] = {
1784 	&dev_attr_vbios_version.attr,
1785 	NULL
1786 };
1787 
1788 const struct attribute_group amdgpu_vbios_version_attr_group = {
1789 	.attrs = amdgpu_vbios_version_attrs
1790 };
1791 
1792 /**
1793  * amdgpu_atombios_fini - free the driver info and callbacks for atombios
1794  *
1795  * @adev: amdgpu_device pointer
1796  *
1797  * Frees the driver info and register access callbacks for the ATOM
1798  * interpreter (r4xx+).
1799  * Called at driver shutdown.
1800  */
1801 void amdgpu_atombios_fini(struct amdgpu_device *adev)
1802 {
1803 	if (adev->mode_info.atom_context) {
1804 		kfree(adev->mode_info.atom_context->scratch);
1805 		kfree(adev->mode_info.atom_context->iio);
1806 	}
1807 	kfree(adev->mode_info.atom_context);
1808 	adev->mode_info.atom_context = NULL;
1809 	kfree(adev->mode_info.atom_card_info);
1810 	adev->mode_info.atom_card_info = NULL;
1811 }
1812 
1813 /**
1814  * amdgpu_atombios_init - init the driver info and callbacks for atombios
1815  *
1816  * @adev: amdgpu_device pointer
1817  *
1818  * Initializes the driver info and register access callbacks for the
1819  * ATOM interpreter (r4xx+).
1820  * Returns 0 on sucess, -ENOMEM on failure.
1821  * Called at driver startup.
1822  */
1823 int amdgpu_atombios_init(struct amdgpu_device *adev)
1824 {
1825 	struct card_info *atom_card_info =
1826 	    kzalloc(sizeof(struct card_info), GFP_KERNEL);
1827 
1828 	if (!atom_card_info)
1829 		return -ENOMEM;
1830 
1831 	adev->mode_info.atom_card_info = atom_card_info;
1832 	atom_card_info->dev = adev_to_drm(adev);
1833 	atom_card_info->reg_read = cail_reg_read;
1834 	atom_card_info->reg_write = cail_reg_write;
1835 	atom_card_info->mc_read = cail_mc_read;
1836 	atom_card_info->mc_write = cail_mc_write;
1837 	atom_card_info->pll_read = cail_pll_read;
1838 	atom_card_info->pll_write = cail_pll_write;
1839 
1840 	adev->mode_info.atom_context = amdgpu_atom_parse(atom_card_info, adev->bios);
1841 	if (!adev->mode_info.atom_context) {
1842 		amdgpu_atombios_fini(adev);
1843 		return -ENOMEM;
1844 	}
1845 
1846 	mutex_init(&adev->mode_info.atom_context->mutex);
1847 	if (adev->is_atom_fw) {
1848 		amdgpu_atomfirmware_scratch_regs_init(adev);
1849 		amdgpu_atomfirmware_allocate_fb_scratch(adev);
1850 		/* cached firmware_flags for further usage */
1851 		adev->mode_info.firmware_flags =
1852 			amdgpu_atomfirmware_query_firmware_capability(adev);
1853 	} else {
1854 		amdgpu_atombios_scratch_regs_init(adev);
1855 		amdgpu_atombios_allocate_fb_scratch(adev);
1856 	}
1857 
1858 	return 0;
1859 }
1860 
1861 int amdgpu_atombios_get_data_table(struct amdgpu_device *adev,
1862 				   uint32_t table,
1863 				   uint16_t *size,
1864 				   uint8_t *frev,
1865 				   uint8_t *crev,
1866 				   uint8_t **addr)
1867 {
1868 	uint16_t data_start;
1869 
1870 	if (!amdgpu_atom_parse_data_header(adev->mode_info.atom_context, table,
1871 					   size, frev, crev, &data_start))
1872 		return -EINVAL;
1873 
1874 	*addr = (uint8_t *)adev->mode_info.atom_context->bios + data_start;
1875 
1876 	return 0;
1877 }
1878