Merge tag 'soundwire-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul...
[linux-2.6-microblaze.git] / drivers / gpu / drm / amd / display / dc / bios / bios_parser2.c
1 /*
2  * Copyright 2012-15 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  * Authors: AMD
23  *
24  */
25
26 #include <linux/slab.h>
27
28 #include "dm_services.h"
29
30 #include "ObjectID.h"
31 #include "atomfirmware.h"
32
33 #include "dc_bios_types.h"
34 #include "include/grph_object_ctrl_defs.h"
35 #include "include/bios_parser_interface.h"
36 #include "include/i2caux_interface.h"
37 #include "include/logger_interface.h"
38
39 #include "command_table2.h"
40
41 #include "bios_parser_helper.h"
42 #include "command_table_helper2.h"
43 #include "bios_parser2.h"
44 #include "bios_parser_types_internal2.h"
45 #include "bios_parser_interface.h"
46
47 #include "bios_parser_common.h"
48
49 /* Temporarily add in defines until ObjectID.h patch is updated in a few days */
50 #ifndef GENERIC_OBJECT_ID_BRACKET_LAYOUT
51 #define GENERIC_OBJECT_ID_BRACKET_LAYOUT          0x05
52 #endif /* GENERIC_OBJECT_ID_BRACKET_LAYOUT */
53
54 #ifndef GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID1
55 #define GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID1   \
56         (GRAPH_OBJECT_TYPE_GENERIC << OBJECT_TYPE_SHIFT |\
57         GRAPH_OBJECT_ENUM_ID1 << ENUM_ID_SHIFT |\
58         GENERIC_OBJECT_ID_BRACKET_LAYOUT << OBJECT_ID_SHIFT)
59 #endif /* GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID1 */
60
61 #ifndef GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2
62 #define GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2   \
63         (GRAPH_OBJECT_TYPE_GENERIC << OBJECT_TYPE_SHIFT |\
64         GRAPH_OBJECT_ENUM_ID2 << ENUM_ID_SHIFT |\
65         GENERIC_OBJECT_ID_BRACKET_LAYOUT << OBJECT_ID_SHIFT)
66 #endif /* GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2 */
67
68 #define DC_LOGGER \
69         bp->base.ctx->logger
70
71 #define LAST_RECORD_TYPE 0xff
72 #define SMU9_SYSPLL0_ID  0
73
74 struct i2c_id_config_access {
75         uint8_t bfI2C_LineMux:4;
76         uint8_t bfHW_EngineID:3;
77         uint8_t bfHW_Capable:1;
78         uint8_t ucAccess;
79 };
80
81 static enum bp_result get_gpio_i2c_info(struct bios_parser *bp,
82         struct atom_i2c_record *record,
83         struct graphics_object_i2c_info *info);
84
85 static enum bp_result bios_parser_get_firmware_info(
86         struct dc_bios *dcb,
87         struct dc_firmware_info *info);
88
89 static enum bp_result bios_parser_get_encoder_cap_info(
90         struct dc_bios *dcb,
91         struct graphics_object_id object_id,
92         struct bp_encoder_cap_info *info);
93
94 static enum bp_result get_firmware_info_v3_1(
95         struct bios_parser *bp,
96         struct dc_firmware_info *info);
97
98 static enum bp_result get_firmware_info_v3_2(
99         struct bios_parser *bp,
100         struct dc_firmware_info *info);
101
102 static struct atom_hpd_int_record *get_hpd_record(struct bios_parser *bp,
103                 struct atom_display_object_path_v2 *object);
104
105 static struct atom_encoder_caps_record *get_encoder_cap_record(
106         struct bios_parser *bp,
107         struct atom_display_object_path_v2 *object);
108
109 #define BIOS_IMAGE_SIZE_OFFSET 2
110 #define BIOS_IMAGE_SIZE_UNIT 512
111
112 #define DATA_TABLES(table) (bp->master_data_tbl->listOfdatatables.table)
113
114 static void bios_parser2_destruct(struct bios_parser *bp)
115 {
116         kfree(bp->base.bios_local_image);
117         kfree(bp->base.integrated_info);
118 }
119
120 static void firmware_parser_destroy(struct dc_bios **dcb)
121 {
122         struct bios_parser *bp = BP_FROM_DCB(*dcb);
123
124         if (!bp) {
125                 BREAK_TO_DEBUGGER();
126                 return;
127         }
128
129         bios_parser2_destruct(bp);
130
131         kfree(bp);
132         *dcb = NULL;
133 }
134
135 static void get_atom_data_table_revision(
136         struct atom_common_table_header *atom_data_tbl,
137         struct atom_data_revision *tbl_revision)
138 {
139         if (!tbl_revision)
140                 return;
141
142         /* initialize the revision to 0 which is invalid revision */
143         tbl_revision->major = 0;
144         tbl_revision->minor = 0;
145
146         if (!atom_data_tbl)
147                 return;
148
149         tbl_revision->major =
150                         (uint32_t) atom_data_tbl->format_revision & 0x3f;
151         tbl_revision->minor =
152                         (uint32_t) atom_data_tbl->content_revision & 0x3f;
153 }
154
155 /* BIOS oject table displaypath is per connector.
156  * There is extra path not for connector. BIOS fill its encoderid as 0
157  */
158 static uint8_t bios_parser_get_connectors_number(struct dc_bios *dcb)
159 {
160         struct bios_parser *bp = BP_FROM_DCB(dcb);
161         unsigned int count = 0;
162         unsigned int i;
163
164         for (i = 0; i < bp->object_info_tbl.v1_4->number_of_path; i++) {
165                 if (bp->object_info_tbl.v1_4->display_path[i].encoderobjid != 0)
166                         count++;
167         }
168         return count;
169 }
170
171 static struct graphics_object_id bios_parser_get_connector_id(
172         struct dc_bios *dcb,
173         uint8_t i)
174 {
175         struct bios_parser *bp = BP_FROM_DCB(dcb);
176         struct graphics_object_id object_id = dal_graphics_object_id_init(
177                 0, ENUM_ID_UNKNOWN, OBJECT_TYPE_UNKNOWN);
178         struct object_info_table *tbl = &bp->object_info_tbl;
179         struct display_object_info_table_v1_4 *v1_4 = tbl->v1_4;
180
181         if (v1_4->number_of_path > i) {
182                 /* If display_objid is generic object id,  the encoderObj
183                  * /extencoderobjId should be 0
184                  */
185                 if (v1_4->display_path[i].encoderobjid != 0 &&
186                                 v1_4->display_path[i].display_objid != 0)
187                         object_id = object_id_from_bios_object_id(
188                                         v1_4->display_path[i].display_objid);
189         }
190
191         return object_id;
192 }
193
194 static enum bp_result bios_parser_get_src_obj(struct dc_bios *dcb,
195         struct graphics_object_id object_id, uint32_t index,
196         struct graphics_object_id *src_object_id)
197 {
198         struct bios_parser *bp = BP_FROM_DCB(dcb);
199         unsigned int i;
200         enum bp_result  bp_result = BP_RESULT_BADINPUT;
201         struct graphics_object_id obj_id = {0};
202         struct object_info_table *tbl = &bp->object_info_tbl;
203
204         if (!src_object_id)
205                 return bp_result;
206
207         switch (object_id.type) {
208         /* Encoder's Source is GPU.  BIOS does not provide GPU, since all
209          * displaypaths point to same GPU (0x1100).  Hardcode GPU object type
210          */
211         case OBJECT_TYPE_ENCODER:
212                 /* TODO: since num of src must be less than 2.
213                  * If found in for loop, should break.
214                  * DAL2 implementation may be changed too
215                  */
216                 for (i = 0; i < tbl->v1_4->number_of_path; i++) {
217                         obj_id = object_id_from_bios_object_id(
218                         tbl->v1_4->display_path[i].encoderobjid);
219                         if (object_id.type == obj_id.type &&
220                                         object_id.id == obj_id.id &&
221                                                 object_id.enum_id ==
222                                                         obj_id.enum_id) {
223                                 *src_object_id =
224                                 object_id_from_bios_object_id(0x1100);
225                                 /* break; */
226                         }
227                 }
228                 bp_result = BP_RESULT_OK;
229                 break;
230         case OBJECT_TYPE_CONNECTOR:
231                 for (i = 0; i < tbl->v1_4->number_of_path; i++) {
232                         obj_id = object_id_from_bios_object_id(
233                                 tbl->v1_4->display_path[i].display_objid);
234
235                         if (object_id.type == obj_id.type &&
236                                 object_id.id == obj_id.id &&
237                                         object_id.enum_id == obj_id.enum_id) {
238                                 *src_object_id =
239                                 object_id_from_bios_object_id(
240                                 tbl->v1_4->display_path[i].encoderobjid);
241                                 /* break; */
242                         }
243                 }
244                 bp_result = BP_RESULT_OK;
245                 break;
246         default:
247                 break;
248         }
249
250         return bp_result;
251 }
252
253 /* from graphics_object_id, find display path which includes the object_id */
254 static struct atom_display_object_path_v2 *get_bios_object(
255                 struct bios_parser *bp,
256                 struct graphics_object_id id)
257 {
258         unsigned int i;
259         struct graphics_object_id obj_id = {0};
260
261         switch (id.type) {
262         case OBJECT_TYPE_ENCODER:
263                 for (i = 0; i < bp->object_info_tbl.v1_4->number_of_path; i++) {
264                         obj_id = object_id_from_bios_object_id(
265                                         bp->object_info_tbl.v1_4->display_path[i].encoderobjid);
266                         if (id.type == obj_id.type && id.id == obj_id.id
267                                         && id.enum_id == obj_id.enum_id)
268                                 return &bp->object_info_tbl.v1_4->display_path[i];
269                 }
270                 fallthrough;
271         case OBJECT_TYPE_CONNECTOR:
272         case OBJECT_TYPE_GENERIC:
273                 /* Both Generic and Connector Object ID
274                  * will be stored on display_objid
275                  */
276                 for (i = 0; i < bp->object_info_tbl.v1_4->number_of_path; i++) {
277                         obj_id = object_id_from_bios_object_id(
278                                         bp->object_info_tbl.v1_4->display_path[i].display_objid);
279                         if (id.type == obj_id.type && id.id == obj_id.id
280                                         && id.enum_id == obj_id.enum_id)
281                                 return &bp->object_info_tbl.v1_4->display_path[i];
282                 }
283                 fallthrough;
284         default:
285                 return NULL;
286         }
287 }
288
289 static enum bp_result bios_parser_get_i2c_info(struct dc_bios *dcb,
290         struct graphics_object_id id,
291         struct graphics_object_i2c_info *info)
292 {
293         uint32_t offset;
294         struct atom_display_object_path_v2 *object;
295         struct atom_common_record_header *header;
296         struct atom_i2c_record *record;
297         struct atom_i2c_record dummy_record = {0};
298         struct bios_parser *bp = BP_FROM_DCB(dcb);
299
300         if (!info)
301                 return BP_RESULT_BADINPUT;
302
303         if (id.type == OBJECT_TYPE_GENERIC) {
304                 dummy_record.i2c_id = id.id;
305
306                 if (get_gpio_i2c_info(bp, &dummy_record, info) == BP_RESULT_OK)
307                         return BP_RESULT_OK;
308                 else
309                         return BP_RESULT_NORECORD;
310         }
311
312         object = get_bios_object(bp, id);
313
314         if (!object)
315                 return BP_RESULT_BADINPUT;
316
317         offset = object->disp_recordoffset + bp->object_info_tbl_offset;
318
319         for (;;) {
320                 header = GET_IMAGE(struct atom_common_record_header, offset);
321
322                 if (!header)
323                         return BP_RESULT_BADBIOSTABLE;
324
325                 if (header->record_type == LAST_RECORD_TYPE ||
326                         !header->record_size)
327                         break;
328
329                 if (header->record_type == ATOM_I2C_RECORD_TYPE
330                         && sizeof(struct atom_i2c_record) <=
331                                                         header->record_size) {
332                         /* get the I2C info */
333                         record = (struct atom_i2c_record *) header;
334
335                         if (get_gpio_i2c_info(bp, record, info) ==
336                                                                 BP_RESULT_OK)
337                                 return BP_RESULT_OK;
338                 }
339
340                 offset += header->record_size;
341         }
342
343         return BP_RESULT_NORECORD;
344 }
345
346 static enum bp_result get_gpio_i2c_info(
347         struct bios_parser *bp,
348         struct atom_i2c_record *record,
349         struct graphics_object_i2c_info *info)
350 {
351         struct atom_gpio_pin_lut_v2_1 *header;
352         uint32_t count = 0;
353         unsigned int table_index = 0;
354         bool find_valid = false;
355
356         if (!info)
357                 return BP_RESULT_BADINPUT;
358
359         /* get the GPIO_I2C info */
360         if (!DATA_TABLES(gpio_pin_lut))
361                 return BP_RESULT_BADBIOSTABLE;
362
363         header = GET_IMAGE(struct atom_gpio_pin_lut_v2_1,
364                                         DATA_TABLES(gpio_pin_lut));
365         if (!header)
366                 return BP_RESULT_BADBIOSTABLE;
367
368         if (sizeof(struct atom_common_table_header) +
369                         sizeof(struct atom_gpio_pin_assignment) >
370                         le16_to_cpu(header->table_header.structuresize))
371                 return BP_RESULT_BADBIOSTABLE;
372
373         /* TODO: is version change? */
374         if (header->table_header.content_revision != 1)
375                 return BP_RESULT_UNSUPPORTED;
376
377         /* get data count */
378         count = (le16_to_cpu(header->table_header.structuresize)
379                         - sizeof(struct atom_common_table_header))
380                                 / sizeof(struct atom_gpio_pin_assignment);
381
382         for (table_index = 0; table_index < count; table_index++) {
383                 if (((record->i2c_id & I2C_HW_CAP) == (
384                 header->gpio_pin[table_index].gpio_id &
385                                                 I2C_HW_CAP)) &&
386                 ((record->i2c_id & I2C_HW_ENGINE_ID_MASK)  ==
387                 (header->gpio_pin[table_index].gpio_id &
388                                         I2C_HW_ENGINE_ID_MASK)) &&
389                 ((record->i2c_id & I2C_HW_LANE_MUX) ==
390                 (header->gpio_pin[table_index].gpio_id &
391                                                 I2C_HW_LANE_MUX))) {
392                         /* still valid */
393                         find_valid = true;
394                         break;
395                 }
396         }
397
398         /* If we don't find the entry that we are looking for then
399          *  we will return BP_Result_BadBiosTable.
400          */
401         if (find_valid == false)
402                 return BP_RESULT_BADBIOSTABLE;
403
404         /* get the GPIO_I2C_INFO */
405         info->i2c_hw_assist = (record->i2c_id & I2C_HW_CAP) ? true : false;
406         info->i2c_line = record->i2c_id & I2C_HW_LANE_MUX;
407         info->i2c_engine_id = (record->i2c_id & I2C_HW_ENGINE_ID_MASK) >> 4;
408         info->i2c_slave_address = record->i2c_slave_addr;
409
410         /* TODO: check how to get register offset for en, Y, etc. */
411         info->gpio_info.clk_a_register_index =
412                         le16_to_cpu(
413                         header->gpio_pin[table_index].data_a_reg_index);
414         info->gpio_info.clk_a_shift =
415                         header->gpio_pin[table_index].gpio_bitshift;
416
417         return BP_RESULT_OK;
418 }
419
420 static enum bp_result bios_parser_get_hpd_info(
421         struct dc_bios *dcb,
422         struct graphics_object_id id,
423         struct graphics_object_hpd_info *info)
424 {
425         struct bios_parser *bp = BP_FROM_DCB(dcb);
426         struct atom_display_object_path_v2 *object;
427         struct atom_hpd_int_record *record = NULL;
428
429         if (!info)
430                 return BP_RESULT_BADINPUT;
431
432         object = get_bios_object(bp, id);
433
434         if (!object)
435                 return BP_RESULT_BADINPUT;
436
437         record = get_hpd_record(bp, object);
438
439         if (record != NULL) {
440                 info->hpd_int_gpio_uid = record->pin_id;
441                 info->hpd_active = record->plugin_pin_state;
442                 return BP_RESULT_OK;
443         }
444
445         return BP_RESULT_NORECORD;
446 }
447
448 static struct atom_hpd_int_record *get_hpd_record(
449         struct bios_parser *bp,
450         struct atom_display_object_path_v2 *object)
451 {
452         struct atom_common_record_header *header;
453         uint32_t offset;
454
455         if (!object) {
456                 BREAK_TO_DEBUGGER(); /* Invalid object */
457                 return NULL;
458         }
459
460         offset = le16_to_cpu(object->disp_recordoffset)
461                         + bp->object_info_tbl_offset;
462
463         for (;;) {
464                 header = GET_IMAGE(struct atom_common_record_header, offset);
465
466                 if (!header)
467                         return NULL;
468
469                 if (header->record_type == LAST_RECORD_TYPE ||
470                         !header->record_size)
471                         break;
472
473                 if (header->record_type == ATOM_HPD_INT_RECORD_TYPE
474                         && sizeof(struct atom_hpd_int_record) <=
475                                                         header->record_size)
476                         return (struct atom_hpd_int_record *) header;
477
478                 offset += header->record_size;
479         }
480
481         return NULL;
482 }
483
484 /**
485  * bios_parser_get_gpio_pin_info
486  * Get GpioPin information of input gpio id
487  *
488  * @param gpio_id, GPIO ID
489  * @param info, GpioPin information structure
490  * @return Bios parser result code
491  * @note
492  *  to get the GPIO PIN INFO, we need:
493  *  1. get the GPIO_ID from other object table, see GetHPDInfo()
494  *  2. in DATA_TABLE.GPIO_Pin_LUT, search all records,
495  *      to get the registerA  offset/mask
496  */
497 static enum bp_result bios_parser_get_gpio_pin_info(
498         struct dc_bios *dcb,
499         uint32_t gpio_id,
500         struct gpio_pin_info *info)
501 {
502         struct bios_parser *bp = BP_FROM_DCB(dcb);
503         struct atom_gpio_pin_lut_v2_1 *header;
504         uint32_t count = 0;
505         uint32_t i = 0;
506
507         if (!DATA_TABLES(gpio_pin_lut))
508                 return BP_RESULT_BADBIOSTABLE;
509
510         header = GET_IMAGE(struct atom_gpio_pin_lut_v2_1,
511                                                 DATA_TABLES(gpio_pin_lut));
512         if (!header)
513                 return BP_RESULT_BADBIOSTABLE;
514
515         if (sizeof(struct atom_common_table_header) +
516                         sizeof(struct atom_gpio_pin_assignment)
517                         > le16_to_cpu(header->table_header.structuresize))
518                 return BP_RESULT_BADBIOSTABLE;
519
520         if (header->table_header.content_revision != 1)
521                 return BP_RESULT_UNSUPPORTED;
522
523         /* Temporary hard code gpio pin info */
524 #if defined(FOR_SIMNOW_BOOT)
525         {
526                 struct  atom_gpio_pin_assignment  gpio_pin[8] = {
527                                 {0x5db5, 0, 0, 1, 0},
528                                 {0x5db5, 8, 8, 2, 0},
529                                 {0x5db5, 0x10, 0x10, 3, 0},
530                                 {0x5db5, 0x18, 0x14, 4, 0},
531                                 {0x5db5, 0x1A, 0x18, 5, 0},
532                                 {0x5db5, 0x1C, 0x1C, 6, 0},
533                 };
534
535                 count = 6;
536                 memmove(header->gpio_pin, gpio_pin, sizeof(gpio_pin));
537         }
538 #else
539         count = (le16_to_cpu(header->table_header.structuresize)
540                         - sizeof(struct atom_common_table_header))
541                                 / sizeof(struct atom_gpio_pin_assignment);
542 #endif
543         for (i = 0; i < count; ++i) {
544                 if (header->gpio_pin[i].gpio_id != gpio_id)
545                         continue;
546
547                 info->offset =
548                         (uint32_t) le16_to_cpu(
549                                         header->gpio_pin[i].data_a_reg_index);
550                 info->offset_y = info->offset + 2;
551                 info->offset_en = info->offset + 1;
552                 info->offset_mask = info->offset - 1;
553
554                 info->mask = (uint32_t) (1 <<
555                         header->gpio_pin[i].gpio_bitshift);
556                 info->mask_y = info->mask + 2;
557                 info->mask_en = info->mask + 1;
558                 info->mask_mask = info->mask - 1;
559
560                 return BP_RESULT_OK;
561         }
562
563         return BP_RESULT_NORECORD;
564 }
565
566 static struct device_id device_type_from_device_id(uint16_t device_id)
567 {
568
569         struct device_id result_device_id;
570
571         result_device_id.raw_device_tag = device_id;
572
573         switch (device_id) {
574         case ATOM_DISPLAY_LCD1_SUPPORT:
575                 result_device_id.device_type = DEVICE_TYPE_LCD;
576                 result_device_id.enum_id = 1;
577                 break;
578
579         case ATOM_DISPLAY_DFP1_SUPPORT:
580                 result_device_id.device_type = DEVICE_TYPE_DFP;
581                 result_device_id.enum_id = 1;
582                 break;
583
584         case ATOM_DISPLAY_DFP2_SUPPORT:
585                 result_device_id.device_type = DEVICE_TYPE_DFP;
586                 result_device_id.enum_id = 2;
587                 break;
588
589         case ATOM_DISPLAY_DFP3_SUPPORT:
590                 result_device_id.device_type = DEVICE_TYPE_DFP;
591                 result_device_id.enum_id = 3;
592                 break;
593
594         case ATOM_DISPLAY_DFP4_SUPPORT:
595                 result_device_id.device_type = DEVICE_TYPE_DFP;
596                 result_device_id.enum_id = 4;
597                 break;
598
599         case ATOM_DISPLAY_DFP5_SUPPORT:
600                 result_device_id.device_type = DEVICE_TYPE_DFP;
601                 result_device_id.enum_id = 5;
602                 break;
603
604         case ATOM_DISPLAY_DFP6_SUPPORT:
605                 result_device_id.device_type = DEVICE_TYPE_DFP;
606                 result_device_id.enum_id = 6;
607                 break;
608
609         default:
610                 BREAK_TO_DEBUGGER(); /* Invalid device Id */
611                 result_device_id.device_type = DEVICE_TYPE_UNKNOWN;
612                 result_device_id.enum_id = 0;
613         }
614         return result_device_id;
615 }
616
617 static enum bp_result bios_parser_get_device_tag(
618         struct dc_bios *dcb,
619         struct graphics_object_id connector_object_id,
620         uint32_t device_tag_index,
621         struct connector_device_tag_info *info)
622 {
623         struct bios_parser *bp = BP_FROM_DCB(dcb);
624         struct atom_display_object_path_v2 *object;
625
626         if (!info)
627                 return BP_RESULT_BADINPUT;
628
629         /* getBiosObject will return MXM object */
630         object = get_bios_object(bp, connector_object_id);
631
632         if (!object) {
633                 BREAK_TO_DEBUGGER(); /* Invalid object id */
634                 return BP_RESULT_BADINPUT;
635         }
636
637         info->acpi_device = 0; /* BIOS no longer provides this */
638         info->dev_id = device_type_from_device_id(object->device_tag);
639
640         return BP_RESULT_OK;
641 }
642
643 static enum bp_result get_ss_info_v4_1(
644         struct bios_parser *bp,
645         uint32_t id,
646         uint32_t index,
647         struct spread_spectrum_info *ss_info)
648 {
649         enum bp_result result = BP_RESULT_OK;
650         struct atom_display_controller_info_v4_1 *disp_cntl_tbl = NULL;
651         struct atom_smu_info_v3_3 *smu_info = NULL;
652
653         if (!ss_info)
654                 return BP_RESULT_BADINPUT;
655
656         if (!DATA_TABLES(dce_info))
657                 return BP_RESULT_BADBIOSTABLE;
658
659         disp_cntl_tbl =  GET_IMAGE(struct atom_display_controller_info_v4_1,
660                                                         DATA_TABLES(dce_info));
661         if (!disp_cntl_tbl)
662                 return BP_RESULT_BADBIOSTABLE;
663
664
665         ss_info->type.STEP_AND_DELAY_INFO = false;
666         ss_info->spread_percentage_divider = 1000;
667         /* BIOS no longer uses target clock.  Always enable for now */
668         ss_info->target_clock_range = 0xffffffff;
669
670         switch (id) {
671         case AS_SIGNAL_TYPE_DVI:
672                 ss_info->spread_spectrum_percentage =
673                                 disp_cntl_tbl->dvi_ss_percentage;
674                 ss_info->spread_spectrum_range =
675                                 disp_cntl_tbl->dvi_ss_rate_10hz * 10;
676                 if (disp_cntl_tbl->dvi_ss_mode & ATOM_SS_CENTRE_SPREAD_MODE)
677                         ss_info->type.CENTER_MODE = true;
678                 break;
679         case AS_SIGNAL_TYPE_HDMI:
680                 ss_info->spread_spectrum_percentage =
681                                 disp_cntl_tbl->hdmi_ss_percentage;
682                 ss_info->spread_spectrum_range =
683                                 disp_cntl_tbl->hdmi_ss_rate_10hz * 10;
684                 if (disp_cntl_tbl->hdmi_ss_mode & ATOM_SS_CENTRE_SPREAD_MODE)
685                         ss_info->type.CENTER_MODE = true;
686                 break;
687         /* TODO LVDS not support anymore? */
688         case AS_SIGNAL_TYPE_DISPLAY_PORT:
689                 ss_info->spread_spectrum_percentage =
690                                 disp_cntl_tbl->dp_ss_percentage;
691                 ss_info->spread_spectrum_range =
692                                 disp_cntl_tbl->dp_ss_rate_10hz * 10;
693                 if (disp_cntl_tbl->dp_ss_mode & ATOM_SS_CENTRE_SPREAD_MODE)
694                         ss_info->type.CENTER_MODE = true;
695                 break;
696         case AS_SIGNAL_TYPE_GPU_PLL:
697                 /* atom_firmware: DAL only get data from dce_info table.
698                  * if data within smu_info is needed for DAL, VBIOS should
699                  * copy it into dce_info
700                  */
701                 result = BP_RESULT_UNSUPPORTED;
702                 break;
703         case AS_SIGNAL_TYPE_XGMI:
704                 smu_info =  GET_IMAGE(struct atom_smu_info_v3_3,
705                                       DATA_TABLES(smu_info));
706                 if (!smu_info)
707                         return BP_RESULT_BADBIOSTABLE;
708
709                 ss_info->spread_spectrum_percentage =
710                                 smu_info->waflclk_ss_percentage;
711                 ss_info->spread_spectrum_range =
712                                 smu_info->gpuclk_ss_rate_10hz * 10;
713                 if (smu_info->waflclk_ss_mode & ATOM_SS_CENTRE_SPREAD_MODE)
714                         ss_info->type.CENTER_MODE = true;
715                 break;
716         default:
717                 result = BP_RESULT_UNSUPPORTED;
718         }
719
720         return result;
721 }
722
723 static enum bp_result get_ss_info_v4_2(
724         struct bios_parser *bp,
725         uint32_t id,
726         uint32_t index,
727         struct spread_spectrum_info *ss_info)
728 {
729         enum bp_result result = BP_RESULT_OK;
730         struct atom_display_controller_info_v4_2 *disp_cntl_tbl = NULL;
731         struct atom_smu_info_v3_1 *smu_info = NULL;
732
733         if (!ss_info)
734                 return BP_RESULT_BADINPUT;
735
736         if (!DATA_TABLES(dce_info))
737                 return BP_RESULT_BADBIOSTABLE;
738
739         if (!DATA_TABLES(smu_info))
740                 return BP_RESULT_BADBIOSTABLE;
741
742         disp_cntl_tbl =  GET_IMAGE(struct atom_display_controller_info_v4_2,
743                                                         DATA_TABLES(dce_info));
744         if (!disp_cntl_tbl)
745                 return BP_RESULT_BADBIOSTABLE;
746
747         smu_info =  GET_IMAGE(struct atom_smu_info_v3_1, DATA_TABLES(smu_info));
748         if (!smu_info)
749                 return BP_RESULT_BADBIOSTABLE;
750
751         ss_info->type.STEP_AND_DELAY_INFO = false;
752         ss_info->spread_percentage_divider = 1000;
753         /* BIOS no longer uses target clock.  Always enable for now */
754         ss_info->target_clock_range = 0xffffffff;
755
756         switch (id) {
757         case AS_SIGNAL_TYPE_DVI:
758                 ss_info->spread_spectrum_percentage =
759                                 disp_cntl_tbl->dvi_ss_percentage;
760                 ss_info->spread_spectrum_range =
761                                 disp_cntl_tbl->dvi_ss_rate_10hz * 10;
762                 if (disp_cntl_tbl->dvi_ss_mode & ATOM_SS_CENTRE_SPREAD_MODE)
763                         ss_info->type.CENTER_MODE = true;
764                 break;
765         case AS_SIGNAL_TYPE_HDMI:
766                 ss_info->spread_spectrum_percentage =
767                                 disp_cntl_tbl->hdmi_ss_percentage;
768                 ss_info->spread_spectrum_range =
769                                 disp_cntl_tbl->hdmi_ss_rate_10hz * 10;
770                 if (disp_cntl_tbl->hdmi_ss_mode & ATOM_SS_CENTRE_SPREAD_MODE)
771                         ss_info->type.CENTER_MODE = true;
772                 break;
773         /* TODO LVDS not support anymore? */
774         case AS_SIGNAL_TYPE_DISPLAY_PORT:
775                 ss_info->spread_spectrum_percentage =
776                                 smu_info->gpuclk_ss_percentage;
777                 ss_info->spread_spectrum_range =
778                                 smu_info->gpuclk_ss_rate_10hz * 10;
779                 if (smu_info->gpuclk_ss_mode & ATOM_SS_CENTRE_SPREAD_MODE)
780                         ss_info->type.CENTER_MODE = true;
781                 break;
782         case AS_SIGNAL_TYPE_GPU_PLL:
783                 /* atom_firmware: DAL only get data from dce_info table.
784                  * if data within smu_info is needed for DAL, VBIOS should
785                  * copy it into dce_info
786                  */
787                 result = BP_RESULT_UNSUPPORTED;
788                 break;
789         default:
790                 result = BP_RESULT_UNSUPPORTED;
791         }
792
793         return result;
794 }
795
796 /**
797  * bios_parser_get_spread_spectrum_info
798  * Get spread spectrum information from the ASIC_InternalSS_Info(ver 2.1 or
799  * ver 3.1) or SS_Info table from the VBIOS. Currently ASIC_InternalSS_Info
800  * ver 2.1 can co-exist with SS_Info table. Expect ASIC_InternalSS_Info
801  * ver 3.1,
802  * there is only one entry for each signal /ss id.  However, there is
803  * no planning of supporting multiple spread Sprectum entry for EverGreen
804  * @param [in] this
805  * @param [in] signal, ASSignalType to be converted to info index
806  * @param [in] index, number of entries that match the converted info index
807  * @param [out] ss_info, sprectrum information structure,
808  * @return Bios parser result code
809  */
810 static enum bp_result bios_parser_get_spread_spectrum_info(
811         struct dc_bios *dcb,
812         enum as_signal_type signal,
813         uint32_t index,
814         struct spread_spectrum_info *ss_info)
815 {
816         struct bios_parser *bp = BP_FROM_DCB(dcb);
817         enum bp_result result = BP_RESULT_UNSUPPORTED;
818         struct atom_common_table_header *header;
819         struct atom_data_revision tbl_revision;
820
821         if (!ss_info) /* check for bad input */
822                 return BP_RESULT_BADINPUT;
823
824         if (!DATA_TABLES(dce_info))
825                 return BP_RESULT_UNSUPPORTED;
826
827         header = GET_IMAGE(struct atom_common_table_header,
828                                                 DATA_TABLES(dce_info));
829         get_atom_data_table_revision(header, &tbl_revision);
830
831         switch (tbl_revision.major) {
832         case 4:
833                 switch (tbl_revision.minor) {
834                 case 1:
835                         return get_ss_info_v4_1(bp, signal, index, ss_info);
836                 case 2:
837                 case 3:
838                         return get_ss_info_v4_2(bp, signal, index, ss_info);
839                 default:
840                         break;
841                 }
842                 break;
843         default:
844                 break;
845         }
846         /* there can not be more then one entry for SS Info table */
847         return result;
848 }
849
850 static enum bp_result get_embedded_panel_info_v2_1(
851                 struct bios_parser *bp,
852                 struct embedded_panel_info *info)
853 {
854         struct lcd_info_v2_1 *lvds;
855
856         if (!info)
857                 return BP_RESULT_BADINPUT;
858
859         if (!DATA_TABLES(lcd_info))
860                 return BP_RESULT_UNSUPPORTED;
861
862         lvds = GET_IMAGE(struct lcd_info_v2_1, DATA_TABLES(lcd_info));
863
864         if (!lvds)
865                 return BP_RESULT_BADBIOSTABLE;
866
867         /* TODO: previous vv1_3, should v2_1 */
868         if (!((lvds->table_header.format_revision == 2)
869                         && (lvds->table_header.content_revision >= 1)))
870                 return BP_RESULT_UNSUPPORTED;
871
872         memset(info, 0, sizeof(struct embedded_panel_info));
873
874         /* We need to convert from 10KHz units into KHz units */
875         info->lcd_timing.pixel_clk = le16_to_cpu(lvds->lcd_timing.pixclk) * 10;
876         /* usHActive does not include borders, according to VBIOS team */
877         info->lcd_timing.horizontal_addressable = le16_to_cpu(lvds->lcd_timing.h_active);
878         /* usHBlanking_Time includes borders, so we should really be
879          * subtractingborders duing this translation, but LVDS generally
880          * doesn't have borders, so we should be okay leaving this as is for
881          * now.  May need to revisit if we ever have LVDS with borders
882          */
883         info->lcd_timing.horizontal_blanking_time = le16_to_cpu(lvds->lcd_timing.h_blanking_time);
884         /* usVActive does not include borders, according to VBIOS team*/
885         info->lcd_timing.vertical_addressable = le16_to_cpu(lvds->lcd_timing.v_active);
886         /* usVBlanking_Time includes borders, so we should really be
887          * subtracting borders duing this translation, but LVDS generally
888          * doesn't have borders, so we should be okay leaving this as is for
889          * now. May need to revisit if we ever have LVDS with borders
890          */
891         info->lcd_timing.vertical_blanking_time = le16_to_cpu(lvds->lcd_timing.v_blanking_time);
892         info->lcd_timing.horizontal_sync_offset = le16_to_cpu(lvds->lcd_timing.h_sync_offset);
893         info->lcd_timing.horizontal_sync_width = le16_to_cpu(lvds->lcd_timing.h_sync_width);
894         info->lcd_timing.vertical_sync_offset = le16_to_cpu(lvds->lcd_timing.v_sync_offset);
895         info->lcd_timing.vertical_sync_width = le16_to_cpu(lvds->lcd_timing.v_syncwidth);
896         info->lcd_timing.horizontal_border = lvds->lcd_timing.h_border;
897         info->lcd_timing.vertical_border = lvds->lcd_timing.v_border;
898
899         /* not provided by VBIOS */
900         info->lcd_timing.misc_info.HORIZONTAL_CUT_OFF = 0;
901
902         info->lcd_timing.misc_info.H_SYNC_POLARITY = ~(uint32_t) (lvds->lcd_timing.miscinfo
903                         & ATOM_HSYNC_POLARITY);
904         info->lcd_timing.misc_info.V_SYNC_POLARITY = ~(uint32_t) (lvds->lcd_timing.miscinfo
905                         & ATOM_VSYNC_POLARITY);
906
907         /* not provided by VBIOS */
908         info->lcd_timing.misc_info.VERTICAL_CUT_OFF = 0;
909
910         info->lcd_timing.misc_info.H_REPLICATION_BY2 = !!(lvds->lcd_timing.miscinfo
911                         & ATOM_H_REPLICATIONBY2);
912         info->lcd_timing.misc_info.V_REPLICATION_BY2 = !!(lvds->lcd_timing.miscinfo
913                         & ATOM_V_REPLICATIONBY2);
914         info->lcd_timing.misc_info.COMPOSITE_SYNC = !!(lvds->lcd_timing.miscinfo
915                         & ATOM_COMPOSITESYNC);
916         info->lcd_timing.misc_info.INTERLACE = !!(lvds->lcd_timing.miscinfo & ATOM_INTERLACE);
917
918         /* not provided by VBIOS*/
919         info->lcd_timing.misc_info.DOUBLE_CLOCK = 0;
920         /* not provided by VBIOS*/
921         info->ss_id = 0;
922
923         info->realtek_eDPToLVDS = !!(lvds->dplvdsrxid == eDP_TO_LVDS_REALTEK_ID);
924
925         return BP_RESULT_OK;
926 }
927
928 static enum bp_result bios_parser_get_embedded_panel_info(
929                 struct dc_bios *dcb,
930                 struct embedded_panel_info *info)
931 {
932         struct bios_parser
933         *bp = BP_FROM_DCB(dcb);
934         struct atom_common_table_header *header;
935         struct atom_data_revision tbl_revision;
936
937         if (!DATA_TABLES(lcd_info))
938                 return BP_RESULT_FAILURE;
939
940         header = GET_IMAGE(struct atom_common_table_header, DATA_TABLES(lcd_info));
941
942         if (!header)
943                 return BP_RESULT_BADBIOSTABLE;
944
945         get_atom_data_table_revision(header, &tbl_revision);
946
947         switch (tbl_revision.major) {
948         case 2:
949                 switch (tbl_revision.minor) {
950                 case 1:
951                         return get_embedded_panel_info_v2_1(bp, info);
952                 default:
953                         break;
954                 }
955         default:
956                 break;
957         }
958
959         return BP_RESULT_FAILURE;
960 }
961
962 static uint32_t get_support_mask_for_device_id(struct device_id device_id)
963 {
964         enum dal_device_type device_type = device_id.device_type;
965         uint32_t enum_id = device_id.enum_id;
966
967         switch (device_type) {
968         case DEVICE_TYPE_LCD:
969                 switch (enum_id) {
970                 case 1:
971                         return ATOM_DISPLAY_LCD1_SUPPORT;
972                 default:
973                         break;
974                 }
975                 break;
976         case DEVICE_TYPE_DFP:
977                 switch (enum_id) {
978                 case 1:
979                         return ATOM_DISPLAY_DFP1_SUPPORT;
980                 case 2:
981                         return ATOM_DISPLAY_DFP2_SUPPORT;
982                 case 3:
983                         return ATOM_DISPLAY_DFP3_SUPPORT;
984                 case 4:
985                         return ATOM_DISPLAY_DFP4_SUPPORT;
986                 case 5:
987                         return ATOM_DISPLAY_DFP5_SUPPORT;
988                 case 6:
989                         return ATOM_DISPLAY_DFP6_SUPPORT;
990                 default:
991                         break;
992                 }
993                 break;
994         default:
995                 break;
996         }
997
998         /* Unidentified device ID, return empty support mask. */
999         return 0;
1000 }
1001
1002 static bool bios_parser_is_device_id_supported(
1003         struct dc_bios *dcb,
1004         struct device_id id)
1005 {
1006         struct bios_parser *bp = BP_FROM_DCB(dcb);
1007
1008         uint32_t mask = get_support_mask_for_device_id(id);
1009
1010         return (le16_to_cpu(bp->object_info_tbl.v1_4->supporteddevices) &
1011                                                                 mask) != 0;
1012 }
1013
1014 static uint32_t bios_parser_get_ss_entry_number(
1015         struct dc_bios *dcb,
1016         enum as_signal_type signal)
1017 {
1018         /* TODO: DAL2 atomfirmware implementation does not need this.
1019          * why DAL3 need this?
1020          */
1021         return 1;
1022 }
1023
1024 static enum bp_result bios_parser_transmitter_control(
1025         struct dc_bios *dcb,
1026         struct bp_transmitter_control *cntl)
1027 {
1028         struct bios_parser *bp = BP_FROM_DCB(dcb);
1029
1030         if (!bp->cmd_tbl.transmitter_control)
1031                 return BP_RESULT_FAILURE;
1032
1033         return bp->cmd_tbl.transmitter_control(bp, cntl);
1034 }
1035
1036 static enum bp_result bios_parser_encoder_control(
1037         struct dc_bios *dcb,
1038         struct bp_encoder_control *cntl)
1039 {
1040         struct bios_parser *bp = BP_FROM_DCB(dcb);
1041
1042         if (!bp->cmd_tbl.dig_encoder_control)
1043                 return BP_RESULT_FAILURE;
1044
1045         return bp->cmd_tbl.dig_encoder_control(bp, cntl);
1046 }
1047
1048 static enum bp_result bios_parser_set_pixel_clock(
1049         struct dc_bios *dcb,
1050         struct bp_pixel_clock_parameters *bp_params)
1051 {
1052         struct bios_parser *bp = BP_FROM_DCB(dcb);
1053
1054         if (!bp->cmd_tbl.set_pixel_clock)
1055                 return BP_RESULT_FAILURE;
1056
1057         return bp->cmd_tbl.set_pixel_clock(bp, bp_params);
1058 }
1059
1060 static enum bp_result bios_parser_set_dce_clock(
1061         struct dc_bios *dcb,
1062         struct bp_set_dce_clock_parameters *bp_params)
1063 {
1064         struct bios_parser *bp = BP_FROM_DCB(dcb);
1065
1066         if (!bp->cmd_tbl.set_dce_clock)
1067                 return BP_RESULT_FAILURE;
1068
1069         return bp->cmd_tbl.set_dce_clock(bp, bp_params);
1070 }
1071
1072 static enum bp_result bios_parser_program_crtc_timing(
1073         struct dc_bios *dcb,
1074         struct bp_hw_crtc_timing_parameters *bp_params)
1075 {
1076         struct bios_parser *bp = BP_FROM_DCB(dcb);
1077
1078         if (!bp->cmd_tbl.set_crtc_timing)
1079                 return BP_RESULT_FAILURE;
1080
1081         return bp->cmd_tbl.set_crtc_timing(bp, bp_params);
1082 }
1083
1084 static enum bp_result bios_parser_enable_crtc(
1085         struct dc_bios *dcb,
1086         enum controller_id id,
1087         bool enable)
1088 {
1089         struct bios_parser *bp = BP_FROM_DCB(dcb);
1090
1091         if (!bp->cmd_tbl.enable_crtc)
1092                 return BP_RESULT_FAILURE;
1093
1094         return bp->cmd_tbl.enable_crtc(bp, id, enable);
1095 }
1096
1097 static enum bp_result bios_parser_enable_disp_power_gating(
1098         struct dc_bios *dcb,
1099         enum controller_id controller_id,
1100         enum bp_pipe_control_action action)
1101 {
1102         struct bios_parser *bp = BP_FROM_DCB(dcb);
1103
1104         if (!bp->cmd_tbl.enable_disp_power_gating)
1105                 return BP_RESULT_FAILURE;
1106
1107         return bp->cmd_tbl.enable_disp_power_gating(bp, controller_id,
1108                 action);
1109 }
1110
1111 static enum bp_result bios_parser_enable_lvtma_control(
1112         struct dc_bios *dcb,
1113         uint8_t uc_pwr_on)
1114 {
1115         struct bios_parser *bp = BP_FROM_DCB(dcb);
1116
1117         if (!bp->cmd_tbl.enable_lvtma_control)
1118                 return BP_RESULT_FAILURE;
1119
1120         return bp->cmd_tbl.enable_lvtma_control(bp, uc_pwr_on);
1121 }
1122
1123 static bool bios_parser_is_accelerated_mode(
1124         struct dc_bios *dcb)
1125 {
1126         return bios_is_accelerated_mode(dcb);
1127 }
1128
1129 /**
1130  * bios_parser_set_scratch_critical_state
1131  *
1132  * @brief
1133  *  update critical state bit in VBIOS scratch register
1134  *
1135  * @param
1136  *  bool - to set or reset state
1137  */
1138 static void bios_parser_set_scratch_critical_state(
1139         struct dc_bios *dcb,
1140         bool state)
1141 {
1142         bios_set_scratch_critical_state(dcb, state);
1143 }
1144
1145 static enum bp_result bios_parser_get_firmware_info(
1146         struct dc_bios *dcb,
1147         struct dc_firmware_info *info)
1148 {
1149         struct bios_parser *bp = BP_FROM_DCB(dcb);
1150         enum bp_result result = BP_RESULT_BADBIOSTABLE;
1151         struct atom_common_table_header *header;
1152
1153         struct atom_data_revision revision;
1154
1155         if (info && DATA_TABLES(firmwareinfo)) {
1156                 header = GET_IMAGE(struct atom_common_table_header,
1157                                 DATA_TABLES(firmwareinfo));
1158                 get_atom_data_table_revision(header, &revision);
1159                 switch (revision.major) {
1160                 case 3:
1161                         switch (revision.minor) {
1162                         case 1:
1163                                 result = get_firmware_info_v3_1(bp, info);
1164                                 break;
1165                         case 2:
1166                                 result = get_firmware_info_v3_2(bp, info);
1167                                 break;
1168                         case 3:
1169 #ifdef CONFIG_DRM_AMD_DC_DCN3_0
1170                         case 4:
1171 #endif
1172                                 result = get_firmware_info_v3_2(bp, info);
1173                                 break;
1174                         default:
1175                                 break;
1176                         }
1177                         break;
1178                 default:
1179                         break;
1180                 }
1181         }
1182
1183         return result;
1184 }
1185
1186 static enum bp_result get_firmware_info_v3_1(
1187         struct bios_parser *bp,
1188         struct dc_firmware_info *info)
1189 {
1190         struct atom_firmware_info_v3_1 *firmware_info;
1191         struct atom_display_controller_info_v4_1 *dce_info = NULL;
1192
1193         if (!info)
1194                 return BP_RESULT_BADINPUT;
1195
1196         firmware_info = GET_IMAGE(struct atom_firmware_info_v3_1,
1197                         DATA_TABLES(firmwareinfo));
1198
1199         dce_info = GET_IMAGE(struct atom_display_controller_info_v4_1,
1200                         DATA_TABLES(dce_info));
1201
1202         if (!firmware_info || !dce_info)
1203                 return BP_RESULT_BADBIOSTABLE;
1204
1205         memset(info, 0, sizeof(*info));
1206
1207         /* Pixel clock pll information. */
1208          /* We need to convert from 10KHz units into KHz units */
1209         info->default_memory_clk = firmware_info->bootup_mclk_in10khz * 10;
1210         info->default_engine_clk = firmware_info->bootup_sclk_in10khz * 10;
1211
1212          /* 27MHz for Vega10: */
1213         info->pll_info.crystal_frequency = dce_info->dce_refclk_10khz * 10;
1214
1215         /* Hardcode frequency if BIOS gives no DCE Ref Clk */
1216         if (info->pll_info.crystal_frequency == 0)
1217                 info->pll_info.crystal_frequency = 27000;
1218         /*dp_phy_ref_clk is not correct for atom_display_controller_info_v4_2, but we don't use it*/
1219         info->dp_phy_ref_clk     = dce_info->dpphy_refclk_10khz * 10;
1220         info->i2c_engine_ref_clk = dce_info->i2c_engine_refclk_10khz * 10;
1221
1222         /* Get GPU PLL VCO Clock */
1223
1224         if (bp->cmd_tbl.get_smu_clock_info != NULL) {
1225                 /* VBIOS gives in 10KHz */
1226                 info->smu_gpu_pll_output_freq =
1227                                 bp->cmd_tbl.get_smu_clock_info(bp, SMU9_SYSPLL0_ID) * 10;
1228         }
1229
1230         info->oem_i2c_present = false;
1231
1232         return BP_RESULT_OK;
1233 }
1234
1235 static enum bp_result get_firmware_info_v3_2(
1236         struct bios_parser *bp,
1237         struct dc_firmware_info *info)
1238 {
1239         struct atom_firmware_info_v3_2 *firmware_info;
1240         struct atom_display_controller_info_v4_1 *dce_info = NULL;
1241         struct atom_common_table_header *header;
1242         struct atom_data_revision revision;
1243         struct atom_smu_info_v3_2 *smu_info_v3_2 = NULL;
1244         struct atom_smu_info_v3_3 *smu_info_v3_3 = NULL;
1245
1246         if (!info)
1247                 return BP_RESULT_BADINPUT;
1248
1249         firmware_info = GET_IMAGE(struct atom_firmware_info_v3_2,
1250                         DATA_TABLES(firmwareinfo));
1251
1252         dce_info = GET_IMAGE(struct atom_display_controller_info_v4_1,
1253                         DATA_TABLES(dce_info));
1254
1255         if (!firmware_info || !dce_info)
1256                 return BP_RESULT_BADBIOSTABLE;
1257
1258         memset(info, 0, sizeof(*info));
1259
1260         header = GET_IMAGE(struct atom_common_table_header,
1261                                         DATA_TABLES(smu_info));
1262         get_atom_data_table_revision(header, &revision);
1263
1264         if (revision.minor == 2) {
1265                 /* Vega12 */
1266                 smu_info_v3_2 = GET_IMAGE(struct atom_smu_info_v3_2,
1267                                                         DATA_TABLES(smu_info));
1268
1269                 if (!smu_info_v3_2)
1270                         return BP_RESULT_BADBIOSTABLE;
1271
1272                 info->default_engine_clk = smu_info_v3_2->bootup_dcefclk_10khz * 10;
1273         } else if (revision.minor == 3) {
1274                 /* Vega20 */
1275                 smu_info_v3_3 = GET_IMAGE(struct atom_smu_info_v3_3,
1276                                                         DATA_TABLES(smu_info));
1277
1278                 if (!smu_info_v3_3)
1279                         return BP_RESULT_BADBIOSTABLE;
1280
1281                 info->default_engine_clk = smu_info_v3_3->bootup_dcefclk_10khz * 10;
1282         }
1283
1284          // We need to convert from 10KHz units into KHz units.
1285         info->default_memory_clk = firmware_info->bootup_mclk_in10khz * 10;
1286
1287          /* 27MHz for Vega10 & Vega12; 100MHz for Vega20 */
1288         info->pll_info.crystal_frequency = dce_info->dce_refclk_10khz * 10;
1289         /* Hardcode frequency if BIOS gives no DCE Ref Clk */
1290         if (info->pll_info.crystal_frequency == 0) {
1291                 if (revision.minor == 2)
1292                         info->pll_info.crystal_frequency = 27000;
1293                 else if (revision.minor == 3)
1294                         info->pll_info.crystal_frequency = 100000;
1295         }
1296         /*dp_phy_ref_clk is not correct for atom_display_controller_info_v4_2, but we don't use it*/
1297         info->dp_phy_ref_clk     = dce_info->dpphy_refclk_10khz * 10;
1298         info->i2c_engine_ref_clk = dce_info->i2c_engine_refclk_10khz * 10;
1299
1300         /* Get GPU PLL VCO Clock */
1301         if (bp->cmd_tbl.get_smu_clock_info != NULL) {
1302                 if (revision.minor == 2)
1303                         info->smu_gpu_pll_output_freq =
1304                                         bp->cmd_tbl.get_smu_clock_info(bp, SMU9_SYSPLL0_ID) * 10;
1305                 else if (revision.minor == 3)
1306                         info->smu_gpu_pll_output_freq =
1307                                         bp->cmd_tbl.get_smu_clock_info(bp, SMU11_SYSPLL3_0_ID) * 10;
1308         }
1309
1310         if (firmware_info->board_i2c_feature_id == 0x2) {
1311                 info->oem_i2c_present = true;
1312                 info->oem_i2c_obj_id = firmware_info->board_i2c_feature_gpio_id;
1313         } else {
1314                 info->oem_i2c_present = false;
1315         }
1316
1317         return BP_RESULT_OK;
1318 }
1319
1320 static enum bp_result bios_parser_get_encoder_cap_info(
1321         struct dc_bios *dcb,
1322         struct graphics_object_id object_id,
1323         struct bp_encoder_cap_info *info)
1324 {
1325         struct bios_parser *bp = BP_FROM_DCB(dcb);
1326         struct atom_display_object_path_v2 *object;
1327         struct atom_encoder_caps_record *record = NULL;
1328
1329         if (!info)
1330                 return BP_RESULT_BADINPUT;
1331
1332         object = get_bios_object(bp, object_id);
1333
1334         if (!object)
1335                 return BP_RESULT_BADINPUT;
1336
1337         record = get_encoder_cap_record(bp, object);
1338         if (!record)
1339                 return BP_RESULT_NORECORD;
1340
1341         info->DP_HBR2_CAP = (record->encodercaps &
1342                         ATOM_ENCODER_CAP_RECORD_HBR2) ? 1 : 0;
1343         info->DP_HBR2_EN = (record->encodercaps &
1344                         ATOM_ENCODER_CAP_RECORD_HBR2_EN) ? 1 : 0;
1345         info->DP_HBR3_EN = (record->encodercaps &
1346                         ATOM_ENCODER_CAP_RECORD_HBR3_EN) ? 1 : 0;
1347         info->HDMI_6GB_EN = (record->encodercaps &
1348                         ATOM_ENCODER_CAP_RECORD_HDMI6Gbps_EN) ? 1 : 0;
1349         info->DP_IS_USB_C = (record->encodercaps &
1350                         ATOM_ENCODER_CAP_RECORD_USB_C_TYPE) ? 1 : 0;
1351
1352         return BP_RESULT_OK;
1353 }
1354
1355
1356 static struct atom_encoder_caps_record *get_encoder_cap_record(
1357         struct bios_parser *bp,
1358         struct atom_display_object_path_v2 *object)
1359 {
1360         struct atom_common_record_header *header;
1361         uint32_t offset;
1362
1363         if (!object) {
1364                 BREAK_TO_DEBUGGER(); /* Invalid object */
1365                 return NULL;
1366         }
1367
1368         offset = object->encoder_recordoffset + bp->object_info_tbl_offset;
1369
1370         for (;;) {
1371                 header = GET_IMAGE(struct atom_common_record_header, offset);
1372
1373                 if (!header)
1374                         return NULL;
1375
1376                 offset += header->record_size;
1377
1378                 if (header->record_type == LAST_RECORD_TYPE ||
1379                                 !header->record_size)
1380                         break;
1381
1382                 if (header->record_type != ATOM_ENCODER_CAP_RECORD_TYPE)
1383                         continue;
1384
1385                 if (sizeof(struct atom_encoder_caps_record) <=
1386                                                         header->record_size)
1387                         return (struct atom_encoder_caps_record *)header;
1388         }
1389
1390         return NULL;
1391 }
1392
1393 static enum bp_result get_vram_info_v23(
1394         struct bios_parser *bp,
1395         struct dc_vram_info *info)
1396 {
1397         struct atom_vram_info_header_v2_3 *info_v23;
1398         enum bp_result result = BP_RESULT_OK;
1399
1400         info_v23 = GET_IMAGE(struct atom_vram_info_header_v2_3,
1401                                                 DATA_TABLES(vram_info));
1402
1403         if (info_v23 == NULL)
1404                 return BP_RESULT_BADBIOSTABLE;
1405
1406         info->num_chans = info_v23->vram_module[0].channel_num;
1407         info->dram_channel_width_bytes = (1 << info_v23->vram_module[0].channel_width) / 8;
1408
1409         return result;
1410 }
1411
1412 static enum bp_result get_vram_info_v24(
1413         struct bios_parser *bp,
1414         struct dc_vram_info *info)
1415 {
1416         struct atom_vram_info_header_v2_4 *info_v24;
1417         enum bp_result result = BP_RESULT_OK;
1418
1419         info_v24 = GET_IMAGE(struct atom_vram_info_header_v2_4,
1420                                                 DATA_TABLES(vram_info));
1421
1422         if (info_v24 == NULL)
1423                 return BP_RESULT_BADBIOSTABLE;
1424
1425         info->num_chans = info_v24->vram_module[0].channel_num;
1426         info->dram_channel_width_bytes = (1 << info_v24->vram_module[0].channel_width) / 8;
1427
1428         return result;
1429 }
1430
1431 static enum bp_result get_vram_info_v25(
1432         struct bios_parser *bp,
1433         struct dc_vram_info *info)
1434 {
1435         struct atom_vram_info_header_v2_5 *info_v25;
1436         enum bp_result result = BP_RESULT_OK;
1437
1438         info_v25 = GET_IMAGE(struct atom_vram_info_header_v2_5,
1439                                                 DATA_TABLES(vram_info));
1440
1441         if (info_v25 == NULL)
1442                 return BP_RESULT_BADBIOSTABLE;
1443
1444         info->num_chans = info_v25->vram_module[0].channel_num;
1445         info->dram_channel_width_bytes = (1 << info_v25->vram_module[0].channel_width) / 8;
1446
1447         return result;
1448 }
1449
1450 /*
1451  * get_integrated_info_v11
1452  *
1453  * @brief
1454  * Get V8 integrated BIOS information
1455  *
1456  * @param
1457  * bios_parser *bp - [in]BIOS parser handler to get master data table
1458  * integrated_info *info - [out] store and output integrated info
1459  *
1460  * @return
1461  * enum bp_result - BP_RESULT_OK if information is available,
1462  *                  BP_RESULT_BADBIOSTABLE otherwise.
1463  */
1464 static enum bp_result get_integrated_info_v11(
1465         struct bios_parser *bp,
1466         struct integrated_info *info)
1467 {
1468         struct atom_integrated_system_info_v1_11 *info_v11;
1469         uint32_t i;
1470
1471         info_v11 = GET_IMAGE(struct atom_integrated_system_info_v1_11,
1472                                         DATA_TABLES(integratedsysteminfo));
1473
1474         if (info_v11 == NULL)
1475                 return BP_RESULT_BADBIOSTABLE;
1476
1477         info->gpu_cap_info =
1478         le32_to_cpu(info_v11->gpucapinfo);
1479         /*
1480         * system_config: Bit[0] = 0 : PCIE power gating disabled
1481         *                       = 1 : PCIE power gating enabled
1482         *                Bit[1] = 0 : DDR-PLL shut down disabled
1483         *                       = 1 : DDR-PLL shut down enabled
1484         *                Bit[2] = 0 : DDR-PLL power down disabled
1485         *                       = 1 : DDR-PLL power down enabled
1486         */
1487         info->system_config = le32_to_cpu(info_v11->system_config);
1488         info->cpu_cap_info = le32_to_cpu(info_v11->cpucapinfo);
1489         info->memory_type = info_v11->memorytype;
1490         info->ma_channel_number = info_v11->umachannelnumber;
1491         info->lvds_ss_percentage =
1492         le16_to_cpu(info_v11->lvds_ss_percentage);
1493         info->dp_ss_control =
1494         le16_to_cpu(info_v11->reserved1);
1495         info->lvds_sspread_rate_in_10hz =
1496         le16_to_cpu(info_v11->lvds_ss_rate_10hz);
1497         info->hdmi_ss_percentage =
1498         le16_to_cpu(info_v11->hdmi_ss_percentage);
1499         info->hdmi_sspread_rate_in_10hz =
1500         le16_to_cpu(info_v11->hdmi_ss_rate_10hz);
1501         info->dvi_ss_percentage =
1502         le16_to_cpu(info_v11->dvi_ss_percentage);
1503         info->dvi_sspread_rate_in_10_hz =
1504         le16_to_cpu(info_v11->dvi_ss_rate_10hz);
1505         info->lvds_misc = info_v11->lvds_misc;
1506         for (i = 0; i < NUMBER_OF_UCHAR_FOR_GUID; ++i) {
1507                 info->ext_disp_conn_info.gu_id[i] =
1508                                 info_v11->extdispconninfo.guid[i];
1509         }
1510
1511         for (i = 0; i < MAX_NUMBER_OF_EXT_DISPLAY_PATH; ++i) {
1512                 info->ext_disp_conn_info.path[i].device_connector_id =
1513                 object_id_from_bios_object_id(
1514                 le16_to_cpu(info_v11->extdispconninfo.path[i].connectorobjid));
1515
1516                 info->ext_disp_conn_info.path[i].ext_encoder_obj_id =
1517                 object_id_from_bios_object_id(
1518                         le16_to_cpu(
1519                         info_v11->extdispconninfo.path[i].ext_encoder_objid));
1520
1521                 info->ext_disp_conn_info.path[i].device_tag =
1522                         le16_to_cpu(
1523                                 info_v11->extdispconninfo.path[i].device_tag);
1524                 info->ext_disp_conn_info.path[i].device_acpi_enum =
1525                 le16_to_cpu(
1526                         info_v11->extdispconninfo.path[i].device_acpi_enum);
1527                 info->ext_disp_conn_info.path[i].ext_aux_ddc_lut_index =
1528                         info_v11->extdispconninfo.path[i].auxddclut_index;
1529                 info->ext_disp_conn_info.path[i].ext_hpd_pin_lut_index =
1530                         info_v11->extdispconninfo.path[i].hpdlut_index;
1531                 info->ext_disp_conn_info.path[i].channel_mapping.raw =
1532                         info_v11->extdispconninfo.path[i].channelmapping;
1533                 info->ext_disp_conn_info.path[i].caps =
1534                                 le16_to_cpu(info_v11->extdispconninfo.path[i].caps);
1535         }
1536         info->ext_disp_conn_info.checksum =
1537         info_v11->extdispconninfo.checksum;
1538
1539         info->dp0_ext_hdmi_slv_addr = info_v11->dp0_retimer_set.HdmiSlvAddr;
1540         info->dp0_ext_hdmi_reg_num = info_v11->dp0_retimer_set.HdmiRegNum;
1541         for (i = 0; i < info->dp0_ext_hdmi_reg_num; i++) {
1542                 info->dp0_ext_hdmi_reg_settings[i].i2c_reg_index =
1543                                 info_v11->dp0_retimer_set.HdmiRegSetting[i].ucI2cRegIndex;
1544                 info->dp0_ext_hdmi_reg_settings[i].i2c_reg_val =
1545                                 info_v11->dp0_retimer_set.HdmiRegSetting[i].ucI2cRegVal;
1546         }
1547         info->dp0_ext_hdmi_6g_reg_num = info_v11->dp0_retimer_set.Hdmi6GRegNum;
1548         for (i = 0; i < info->dp0_ext_hdmi_6g_reg_num; i++) {
1549                 info->dp0_ext_hdmi_6g_reg_settings[i].i2c_reg_index =
1550                                 info_v11->dp0_retimer_set.Hdmi6GhzRegSetting[i].ucI2cRegIndex;
1551                 info->dp0_ext_hdmi_6g_reg_settings[i].i2c_reg_val =
1552                                 info_v11->dp0_retimer_set.Hdmi6GhzRegSetting[i].ucI2cRegVal;
1553         }
1554
1555         info->dp1_ext_hdmi_slv_addr = info_v11->dp1_retimer_set.HdmiSlvAddr;
1556         info->dp1_ext_hdmi_reg_num = info_v11->dp1_retimer_set.HdmiRegNum;
1557         for (i = 0; i < info->dp1_ext_hdmi_reg_num; i++) {
1558                 info->dp1_ext_hdmi_reg_settings[i].i2c_reg_index =
1559                                 info_v11->dp1_retimer_set.HdmiRegSetting[i].ucI2cRegIndex;
1560                 info->dp1_ext_hdmi_reg_settings[i].i2c_reg_val =
1561                                 info_v11->dp1_retimer_set.HdmiRegSetting[i].ucI2cRegVal;
1562         }
1563         info->dp1_ext_hdmi_6g_reg_num = info_v11->dp1_retimer_set.Hdmi6GRegNum;
1564         for (i = 0; i < info->dp1_ext_hdmi_6g_reg_num; i++) {
1565                 info->dp1_ext_hdmi_6g_reg_settings[i].i2c_reg_index =
1566                                 info_v11->dp1_retimer_set.Hdmi6GhzRegSetting[i].ucI2cRegIndex;
1567                 info->dp1_ext_hdmi_6g_reg_settings[i].i2c_reg_val =
1568                                 info_v11->dp1_retimer_set.Hdmi6GhzRegSetting[i].ucI2cRegVal;
1569         }
1570
1571         info->dp2_ext_hdmi_slv_addr = info_v11->dp2_retimer_set.HdmiSlvAddr;
1572         info->dp2_ext_hdmi_reg_num = info_v11->dp2_retimer_set.HdmiRegNum;
1573         for (i = 0; i < info->dp2_ext_hdmi_reg_num; i++) {
1574                 info->dp2_ext_hdmi_reg_settings[i].i2c_reg_index =
1575                                 info_v11->dp2_retimer_set.HdmiRegSetting[i].ucI2cRegIndex;
1576                 info->dp2_ext_hdmi_reg_settings[i].i2c_reg_val =
1577                                 info_v11->dp2_retimer_set.HdmiRegSetting[i].ucI2cRegVal;
1578         }
1579         info->dp2_ext_hdmi_6g_reg_num = info_v11->dp2_retimer_set.Hdmi6GRegNum;
1580         for (i = 0; i < info->dp2_ext_hdmi_6g_reg_num; i++) {
1581                 info->dp2_ext_hdmi_6g_reg_settings[i].i2c_reg_index =
1582                                 info_v11->dp2_retimer_set.Hdmi6GhzRegSetting[i].ucI2cRegIndex;
1583                 info->dp2_ext_hdmi_6g_reg_settings[i].i2c_reg_val =
1584                                 info_v11->dp2_retimer_set.Hdmi6GhzRegSetting[i].ucI2cRegVal;
1585         }
1586
1587         info->dp3_ext_hdmi_slv_addr = info_v11->dp3_retimer_set.HdmiSlvAddr;
1588         info->dp3_ext_hdmi_reg_num = info_v11->dp3_retimer_set.HdmiRegNum;
1589         for (i = 0; i < info->dp3_ext_hdmi_reg_num; i++) {
1590                 info->dp3_ext_hdmi_reg_settings[i].i2c_reg_index =
1591                                 info_v11->dp3_retimer_set.HdmiRegSetting[i].ucI2cRegIndex;
1592                 info->dp3_ext_hdmi_reg_settings[i].i2c_reg_val =
1593                                 info_v11->dp3_retimer_set.HdmiRegSetting[i].ucI2cRegVal;
1594         }
1595         info->dp3_ext_hdmi_6g_reg_num = info_v11->dp3_retimer_set.Hdmi6GRegNum;
1596         for (i = 0; i < info->dp3_ext_hdmi_6g_reg_num; i++) {
1597                 info->dp3_ext_hdmi_6g_reg_settings[i].i2c_reg_index =
1598                                 info_v11->dp3_retimer_set.Hdmi6GhzRegSetting[i].ucI2cRegIndex;
1599                 info->dp3_ext_hdmi_6g_reg_settings[i].i2c_reg_val =
1600                                 info_v11->dp3_retimer_set.Hdmi6GhzRegSetting[i].ucI2cRegVal;
1601         }
1602
1603
1604         /** TODO - review **/
1605         #if 0
1606         info->boot_up_engine_clock = le32_to_cpu(info_v11->ulBootUpEngineClock)
1607                                                                         * 10;
1608         info->dentist_vco_freq = le32_to_cpu(info_v11->ulDentistVCOFreq) * 10;
1609         info->boot_up_uma_clock = le32_to_cpu(info_v8->ulBootUpUMAClock) * 10;
1610
1611         for (i = 0; i < NUMBER_OF_DISP_CLK_VOLTAGE; ++i) {
1612                 /* Convert [10KHz] into [KHz] */
1613                 info->disp_clk_voltage[i].max_supported_clk =
1614                 le32_to_cpu(info_v11->sDISPCLK_Voltage[i].
1615                         ulMaximumSupportedCLK) * 10;
1616                 info->disp_clk_voltage[i].voltage_index =
1617                 le32_to_cpu(info_v11->sDISPCLK_Voltage[i].ulVoltageIndex);
1618         }
1619
1620         info->boot_up_req_display_vector =
1621                         le32_to_cpu(info_v11->ulBootUpReqDisplayVector);
1622         info->boot_up_nb_voltage =
1623                         le16_to_cpu(info_v11->usBootUpNBVoltage);
1624         info->ext_disp_conn_info_offset =
1625                         le16_to_cpu(info_v11->usExtDispConnInfoOffset);
1626         info->gmc_restore_reset_time =
1627                         le32_to_cpu(info_v11->ulGMCRestoreResetTime);
1628         info->minimum_n_clk =
1629                         le32_to_cpu(info_v11->ulNbpStateNClkFreq[0]);
1630         for (i = 1; i < 4; ++i)
1631                 info->minimum_n_clk =
1632                                 info->minimum_n_clk <
1633                                 le32_to_cpu(info_v11->ulNbpStateNClkFreq[i]) ?
1634                                 info->minimum_n_clk : le32_to_cpu(
1635                                         info_v11->ulNbpStateNClkFreq[i]);
1636
1637         info->idle_n_clk = le32_to_cpu(info_v11->ulIdleNClk);
1638         info->ddr_dll_power_up_time =
1639             le32_to_cpu(info_v11->ulDDR_DLL_PowerUpTime);
1640         info->ddr_pll_power_up_time =
1641                 le32_to_cpu(info_v11->ulDDR_PLL_PowerUpTime);
1642         info->pcie_clk_ss_type = le16_to_cpu(info_v11->usPCIEClkSSType);
1643         info->max_lvds_pclk_freq_in_single_link =
1644                 le16_to_cpu(info_v11->usMaxLVDSPclkFreqInSingleLink);
1645         info->max_lvds_pclk_freq_in_single_link =
1646                 le16_to_cpu(info_v11->usMaxLVDSPclkFreqInSingleLink);
1647         info->lvds_pwr_on_seq_dig_on_to_de_in_4ms =
1648                 info_v11->ucLVDSPwrOnSeqDIGONtoDE_in4Ms;
1649         info->lvds_pwr_on_seq_de_to_vary_bl_in_4ms =
1650                 info_v11->ucLVDSPwrOnSeqDEtoVARY_BL_in4Ms;
1651         info->lvds_pwr_on_seq_vary_bl_to_blon_in_4ms =
1652                 info_v11->ucLVDSPwrOnSeqVARY_BLtoBLON_in4Ms;
1653         info->lvds_pwr_off_seq_vary_bl_to_de_in4ms =
1654                 info_v11->ucLVDSPwrOffSeqVARY_BLtoDE_in4Ms;
1655         info->lvds_pwr_off_seq_de_to_dig_on_in4ms =
1656                 info_v11->ucLVDSPwrOffSeqDEtoDIGON_in4Ms;
1657         info->lvds_pwr_off_seq_blon_to_vary_bl_in_4ms =
1658                 info_v11->ucLVDSPwrOffSeqBLONtoVARY_BL_in4Ms;
1659         info->lvds_off_to_on_delay_in_4ms =
1660                 info_v11->ucLVDSOffToOnDelay_in4Ms;
1661         info->lvds_bit_depth_control_val =
1662                 le32_to_cpu(info_v11->ulLCDBitDepthControlVal);
1663
1664         for (i = 0; i < NUMBER_OF_AVAILABLE_SCLK; ++i) {
1665                 /* Convert [10KHz] into [KHz] */
1666                 info->avail_s_clk[i].supported_s_clk =
1667                         le32_to_cpu(info_v11->sAvail_SCLK[i].ulSupportedSCLK)
1668                                                                         * 10;
1669                 info->avail_s_clk[i].voltage_index =
1670                         le16_to_cpu(info_v11->sAvail_SCLK[i].usVoltageIndex);
1671                 info->avail_s_clk[i].voltage_id =
1672                         le16_to_cpu(info_v11->sAvail_SCLK[i].usVoltageID);
1673         }
1674         #endif /* TODO*/
1675
1676         return BP_RESULT_OK;
1677 }
1678
1679
1680 /*
1681  * construct_integrated_info
1682  *
1683  * @brief
1684  * Get integrated BIOS information based on table revision
1685  *
1686  * @param
1687  * bios_parser *bp - [in]BIOS parser handler to get master data table
1688  * integrated_info *info - [out] store and output integrated info
1689  *
1690  * @return
1691  * enum bp_result - BP_RESULT_OK if information is available,
1692  *                  BP_RESULT_BADBIOSTABLE otherwise.
1693  */
1694 static enum bp_result construct_integrated_info(
1695         struct bios_parser *bp,
1696         struct integrated_info *info)
1697 {
1698         enum bp_result result = BP_RESULT_BADBIOSTABLE;
1699
1700         struct atom_common_table_header *header;
1701         struct atom_data_revision revision;
1702         uint32_t i;
1703         uint32_t j;
1704
1705         if (info && DATA_TABLES(integratedsysteminfo)) {
1706                 header = GET_IMAGE(struct atom_common_table_header,
1707                                         DATA_TABLES(integratedsysteminfo));
1708
1709                 get_atom_data_table_revision(header, &revision);
1710
1711                 /* Don't need to check major revision as they are all 1 */
1712                 switch (revision.minor) {
1713                 case 11:
1714                 case 12:
1715                         result = get_integrated_info_v11(bp, info);
1716                         break;
1717                 default:
1718                         return result;
1719                 }
1720         }
1721
1722         if (result != BP_RESULT_OK)
1723                 return result;
1724
1725         /* Sort voltage table from low to high*/
1726         for (i = 1; i < NUMBER_OF_DISP_CLK_VOLTAGE; ++i) {
1727                 for (j = i; j > 0; --j) {
1728                         if (info->disp_clk_voltage[j].max_supported_clk <
1729                                 info->disp_clk_voltage[j-1].max_supported_clk
1730                                 ) {
1731                                 /* swap j and j - 1*/
1732                                 swap(info->disp_clk_voltage[j - 1],
1733                                      info->disp_clk_voltage[j]);
1734                         }
1735                 }
1736         }
1737
1738         return result;
1739 }
1740
1741 static enum bp_result bios_parser_get_vram_info(
1742                 struct dc_bios *dcb,
1743                 struct dc_vram_info *info)
1744 {
1745         struct bios_parser *bp = BP_FROM_DCB(dcb);
1746         enum bp_result result = BP_RESULT_BADBIOSTABLE;
1747         struct atom_common_table_header *header;
1748         struct atom_data_revision revision;
1749
1750         if (info && DATA_TABLES(vram_info)) {
1751                 header = GET_IMAGE(struct atom_common_table_header,
1752                                         DATA_TABLES(vram_info));
1753
1754                 get_atom_data_table_revision(header, &revision);
1755
1756                 switch (revision.major) {
1757                 case 2:
1758                         switch (revision.minor) {
1759                         case 3:
1760                                 result = get_vram_info_v23(bp, info);
1761                                 break;
1762                         case 4:
1763                                 result = get_vram_info_v24(bp, info);
1764                                 break;
1765                         case 5:
1766                                 result = get_vram_info_v25(bp, info);
1767                                 break;
1768                         default:
1769                                 break;
1770                         }
1771                         break;
1772
1773                 default:
1774                         return result;
1775                 }
1776
1777         }
1778         return result;
1779 }
1780
1781 static struct integrated_info *bios_parser_create_integrated_info(
1782         struct dc_bios *dcb)
1783 {
1784         struct bios_parser *bp = BP_FROM_DCB(dcb);
1785         struct integrated_info *info = NULL;
1786
1787         info = kzalloc(sizeof(struct integrated_info), GFP_KERNEL);
1788
1789         if (info == NULL) {
1790                 ASSERT_CRITICAL(0);
1791                 return NULL;
1792         }
1793
1794         if (construct_integrated_info(bp, info) == BP_RESULT_OK)
1795                 return info;
1796
1797         kfree(info);
1798
1799         return NULL;
1800 }
1801
1802 static enum bp_result update_slot_layout_info(
1803         struct dc_bios *dcb,
1804         unsigned int i,
1805         struct slot_layout_info *slot_layout_info)
1806 {
1807         unsigned int record_offset;
1808         unsigned int j;
1809         struct atom_display_object_path_v2 *object;
1810         struct atom_bracket_layout_record *record;
1811         struct atom_common_record_header *record_header;
1812         enum bp_result result;
1813         struct bios_parser *bp;
1814         struct object_info_table *tbl;
1815         struct display_object_info_table_v1_4 *v1_4;
1816
1817         record = NULL;
1818         record_header = NULL;
1819         result = BP_RESULT_NORECORD;
1820
1821         bp = BP_FROM_DCB(dcb);
1822         tbl = &bp->object_info_tbl;
1823         v1_4 = tbl->v1_4;
1824
1825         object = &v1_4->display_path[i];
1826         record_offset = (unsigned int)
1827                 (object->disp_recordoffset) +
1828                 (unsigned int)(bp->object_info_tbl_offset);
1829
1830         for (;;) {
1831
1832                 record_header = (struct atom_common_record_header *)
1833                         GET_IMAGE(struct atom_common_record_header,
1834                         record_offset);
1835                 if (record_header == NULL) {
1836                         result = BP_RESULT_BADBIOSTABLE;
1837                         break;
1838                 }
1839
1840                 /* the end of the list */
1841                 if (record_header->record_type == 0xff ||
1842                         record_header->record_size == 0)        {
1843                         break;
1844                 }
1845
1846                 if (record_header->record_type ==
1847                         ATOM_BRACKET_LAYOUT_RECORD_TYPE &&
1848                         sizeof(struct atom_bracket_layout_record)
1849                         <= record_header->record_size) {
1850                         record = (struct atom_bracket_layout_record *)
1851                                 (record_header);
1852                         result = BP_RESULT_OK;
1853                         break;
1854                 }
1855
1856                 record_offset += record_header->record_size;
1857         }
1858
1859         /* return if the record not found */
1860         if (result != BP_RESULT_OK)
1861                 return result;
1862
1863         /* get slot sizes */
1864         slot_layout_info->length = record->bracketlen;
1865         slot_layout_info->width = record->bracketwidth;
1866
1867         /* get info for each connector in the slot */
1868         slot_layout_info->num_of_connectors = record->conn_num;
1869         for (j = 0; j < slot_layout_info->num_of_connectors; ++j) {
1870                 slot_layout_info->connectors[j].connector_type =
1871                         (enum connector_layout_type)
1872                         (record->conn_info[j].connector_type);
1873                 switch (record->conn_info[j].connector_type) {
1874                 case CONNECTOR_TYPE_DVI_D:
1875                         slot_layout_info->connectors[j].connector_type =
1876                                 CONNECTOR_LAYOUT_TYPE_DVI_D;
1877                         slot_layout_info->connectors[j].length =
1878                                 CONNECTOR_SIZE_DVI;
1879                         break;
1880
1881                 case CONNECTOR_TYPE_HDMI:
1882                         slot_layout_info->connectors[j].connector_type =
1883                                 CONNECTOR_LAYOUT_TYPE_HDMI;
1884                         slot_layout_info->connectors[j].length =
1885                                 CONNECTOR_SIZE_HDMI;
1886                         break;
1887
1888                 case CONNECTOR_TYPE_DISPLAY_PORT:
1889                         slot_layout_info->connectors[j].connector_type =
1890                                 CONNECTOR_LAYOUT_TYPE_DP;
1891                         slot_layout_info->connectors[j].length =
1892                                 CONNECTOR_SIZE_DP;
1893                         break;
1894
1895                 case CONNECTOR_TYPE_MINI_DISPLAY_PORT:
1896                         slot_layout_info->connectors[j].connector_type =
1897                                 CONNECTOR_LAYOUT_TYPE_MINI_DP;
1898                         slot_layout_info->connectors[j].length =
1899                                 CONNECTOR_SIZE_MINI_DP;
1900                         break;
1901
1902                 default:
1903                         slot_layout_info->connectors[j].connector_type =
1904                                 CONNECTOR_LAYOUT_TYPE_UNKNOWN;
1905                         slot_layout_info->connectors[j].length =
1906                                 CONNECTOR_SIZE_UNKNOWN;
1907                 }
1908
1909                 slot_layout_info->connectors[j].position =
1910                         record->conn_info[j].position;
1911                 slot_layout_info->connectors[j].connector_id =
1912                         object_id_from_bios_object_id(
1913                                 record->conn_info[j].connectorobjid);
1914         }
1915         return result;
1916 }
1917
1918
1919 static enum bp_result get_bracket_layout_record(
1920         struct dc_bios *dcb,
1921         unsigned int bracket_layout_id,
1922         struct slot_layout_info *slot_layout_info)
1923 {
1924         unsigned int i;
1925         struct bios_parser *bp = BP_FROM_DCB(dcb);
1926         enum bp_result result;
1927         struct object_info_table *tbl;
1928         struct display_object_info_table_v1_4 *v1_4;
1929
1930         if (slot_layout_info == NULL) {
1931                 DC_LOG_DETECTION_EDID_PARSER("Invalid slot_layout_info\n");
1932                 return BP_RESULT_BADINPUT;
1933         }
1934         tbl = &bp->object_info_tbl;
1935         v1_4 = tbl->v1_4;
1936
1937         result = BP_RESULT_NORECORD;
1938         for (i = 0; i < v1_4->number_of_path; ++i)      {
1939
1940                 if (bracket_layout_id ==
1941                         v1_4->display_path[i].display_objid) {
1942                         result = update_slot_layout_info(dcb, i,
1943                                 slot_layout_info);
1944                         break;
1945                 }
1946         }
1947         return result;
1948 }
1949
1950 static enum bp_result bios_get_board_layout_info(
1951         struct dc_bios *dcb,
1952         struct board_layout_info *board_layout_info)
1953 {
1954         unsigned int i;
1955         enum bp_result record_result;
1956
1957         const unsigned int slot_index_to_vbios_id[MAX_BOARD_SLOTS] = {
1958                 GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID1,
1959                 GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2,
1960                 0, 0
1961         };
1962
1963         if (board_layout_info == NULL) {
1964                 DC_LOG_DETECTION_EDID_PARSER("Invalid board_layout_info\n");
1965                 return BP_RESULT_BADINPUT;
1966         }
1967
1968         board_layout_info->num_of_slots = 0;
1969
1970         for (i = 0; i < MAX_BOARD_SLOTS; ++i) {
1971                 record_result = get_bracket_layout_record(dcb,
1972                         slot_index_to_vbios_id[i],
1973                         &board_layout_info->slots[i]);
1974
1975                 if (record_result == BP_RESULT_NORECORD && i > 0)
1976                         break; /* no more slots present in bios */
1977                 else if (record_result != BP_RESULT_OK)
1978                         return record_result;  /* fail */
1979
1980                 ++board_layout_info->num_of_slots;
1981         }
1982
1983         /* all data is valid */
1984         board_layout_info->is_number_of_slots_valid = 1;
1985         board_layout_info->is_slots_size_valid = 1;
1986         board_layout_info->is_connector_offsets_valid = 1;
1987         board_layout_info->is_connector_lengths_valid = 1;
1988
1989         return BP_RESULT_OK;
1990 }
1991
1992
1993 static uint16_t bios_parser_pack_data_tables(
1994         struct dc_bios *dcb,
1995         void *dst)
1996 {
1997 #ifdef PACK_BIOS_DATA
1998         struct bios_parser *bp = BP_FROM_DCB(dcb);
1999         struct atom_rom_header_v2_2 *rom_header = NULL;
2000         struct atom_rom_header_v2_2 *packed_rom_header = NULL;
2001         struct atom_common_table_header *data_tbl_header = NULL;
2002         struct atom_master_list_of_data_tables_v2_1 *data_tbl_list = NULL;
2003         struct atom_master_data_table_v2_1 *packed_master_data_tbl = NULL;
2004         struct atom_data_revision tbl_rev = {0};
2005         uint16_t *rom_header_offset = NULL;
2006         const uint8_t *bios = bp->base.bios;
2007         uint8_t *bios_dst = (uint8_t *)dst;
2008         uint16_t packed_rom_header_offset;
2009         uint16_t packed_masterdatatable_offset;
2010         uint16_t packed_data_tbl_offset;
2011         uint16_t data_tbl_offset;
2012         unsigned int i;
2013
2014         rom_header_offset =
2015                 GET_IMAGE(uint16_t, OFFSET_TO_ATOM_ROM_HEADER_POINTER);
2016
2017         if (!rom_header_offset)
2018                 return 0;
2019
2020         rom_header = GET_IMAGE(struct atom_rom_header_v2_2, *rom_header_offset);
2021
2022         if (!rom_header)
2023                 return 0;
2024
2025         get_atom_data_table_revision(&rom_header->table_header, &tbl_rev);
2026         if (!(tbl_rev.major >= 2 && tbl_rev.minor >= 2))
2027                 return 0;
2028
2029         get_atom_data_table_revision(&bp->master_data_tbl->table_header, &tbl_rev);
2030         if (!(tbl_rev.major >= 2 && tbl_rev.minor >= 1))
2031                 return 0;
2032
2033         packed_rom_header_offset =
2034                 OFFSET_TO_ATOM_ROM_HEADER_POINTER + sizeof(*rom_header_offset);
2035
2036         packed_masterdatatable_offset =
2037                 packed_rom_header_offset + rom_header->table_header.structuresize;
2038
2039         packed_data_tbl_offset =
2040                 packed_masterdatatable_offset +
2041                 bp->master_data_tbl->table_header.structuresize;
2042
2043         packed_rom_header =
2044                 (struct atom_rom_header_v2_2 *)(bios_dst + packed_rom_header_offset);
2045
2046         packed_master_data_tbl =
2047                 (struct atom_master_data_table_v2_1 *)(bios_dst +
2048                 packed_masterdatatable_offset);
2049
2050         memcpy(bios_dst, bios, OFFSET_TO_ATOM_ROM_HEADER_POINTER);
2051
2052         *((uint16_t *)(bios_dst + OFFSET_TO_ATOM_ROM_HEADER_POINTER)) =
2053                 packed_rom_header_offset;
2054
2055         memcpy(bios_dst + packed_rom_header_offset, rom_header,
2056                 rom_header->table_header.structuresize);
2057
2058         packed_rom_header->masterdatatable_offset = packed_masterdatatable_offset;
2059
2060         memcpy(&packed_master_data_tbl->table_header,
2061                 &bp->master_data_tbl->table_header,
2062                 sizeof(bp->master_data_tbl->table_header));
2063
2064         data_tbl_list = &bp->master_data_tbl->listOfdatatables;
2065
2066         /* Each data table offset in data table list is 2 bytes,
2067          * we can use that to iterate through listOfdatatables
2068          * without knowing the name of each member.
2069          */
2070         for (i = 0; i < sizeof(*data_tbl_list)/sizeof(uint16_t); i++) {
2071                 data_tbl_offset = *((uint16_t *)data_tbl_list + i);
2072
2073                 if (data_tbl_offset) {
2074                         data_tbl_header =
2075                                 (struct atom_common_table_header *)(bios + data_tbl_offset);
2076
2077                         memcpy(bios_dst + packed_data_tbl_offset, data_tbl_header,
2078                                 data_tbl_header->structuresize);
2079
2080                         *((uint16_t *)&packed_master_data_tbl->listOfdatatables + i) =
2081                                 packed_data_tbl_offset;
2082
2083                         packed_data_tbl_offset += data_tbl_header->structuresize;
2084                 } else {
2085                         *((uint16_t *)&packed_master_data_tbl->listOfdatatables + i) = 0;
2086                 }
2087         }
2088         return packed_data_tbl_offset;
2089 #endif
2090         // TODO: There is data bytes alignment issue, disable it for now.
2091         return 0;
2092 }
2093
2094 static struct atom_dc_golden_table_v1 *bios_get_golden_table(
2095                 struct bios_parser *bp,
2096                 uint32_t rev_major,
2097                 uint32_t rev_minor,
2098                 uint16_t *dc_golden_table_ver)
2099 {
2100         struct atom_display_controller_info_v4_4 *disp_cntl_tbl_4_4 = NULL;
2101         uint32_t dc_golden_offset = 0;
2102         *dc_golden_table_ver = 0;
2103
2104         if (!DATA_TABLES(dce_info))
2105                 return NULL;
2106
2107         /* ver.4.4 or higher */
2108         switch (rev_major) {
2109         case 4:
2110                 switch (rev_minor) {
2111                 case 4:
2112                         disp_cntl_tbl_4_4 = GET_IMAGE(struct atom_display_controller_info_v4_4,
2113                                                                         DATA_TABLES(dce_info));
2114                         if (!disp_cntl_tbl_4_4)
2115                                 return NULL;
2116                         dc_golden_offset = DATA_TABLES(dce_info) + disp_cntl_tbl_4_4->dc_golden_table_offset;
2117                         *dc_golden_table_ver = disp_cntl_tbl_4_4->dc_golden_table_ver;
2118                         break;
2119                 }
2120                 break;
2121         }
2122
2123         if (!dc_golden_offset)
2124                 return NULL;
2125
2126         if (*dc_golden_table_ver != 1)
2127                 return NULL;
2128
2129         return GET_IMAGE(struct atom_dc_golden_table_v1,
2130                         dc_golden_offset);
2131 }
2132
2133 static enum bp_result bios_get_atom_dc_golden_table(
2134         struct dc_bios *dcb)
2135 {
2136         struct bios_parser *bp = BP_FROM_DCB(dcb);
2137         enum bp_result result = BP_RESULT_OK;
2138         struct atom_dc_golden_table_v1 *atom_dc_golden_table = NULL;
2139         struct atom_common_table_header *header;
2140         struct atom_data_revision tbl_revision;
2141         uint16_t dc_golden_table_ver = 0;
2142
2143         header = GET_IMAGE(struct atom_common_table_header,
2144                                                         DATA_TABLES(dce_info));
2145         if (!header)
2146                 return BP_RESULT_UNSUPPORTED;
2147
2148         get_atom_data_table_revision(header, &tbl_revision);
2149
2150         atom_dc_golden_table = bios_get_golden_table(bp,
2151                         tbl_revision.major,
2152                         tbl_revision.minor,
2153                         &dc_golden_table_ver);
2154
2155         if (!atom_dc_golden_table)
2156                 return BP_RESULT_UNSUPPORTED;
2157
2158         dcb->golden_table.dc_golden_table_ver = dc_golden_table_ver;
2159         dcb->golden_table.aux_dphy_rx_control0_val = atom_dc_golden_table->aux_dphy_rx_control0_val;
2160         dcb->golden_table.aux_dphy_rx_control1_val = atom_dc_golden_table->aux_dphy_rx_control1_val;
2161         dcb->golden_table.aux_dphy_tx_control_val = atom_dc_golden_table->aux_dphy_tx_control_val;
2162         dcb->golden_table.dc_gpio_aux_ctrl_0_val = atom_dc_golden_table->dc_gpio_aux_ctrl_0_val;
2163         dcb->golden_table.dc_gpio_aux_ctrl_1_val = atom_dc_golden_table->dc_gpio_aux_ctrl_1_val;
2164         dcb->golden_table.dc_gpio_aux_ctrl_2_val = atom_dc_golden_table->dc_gpio_aux_ctrl_2_val;
2165         dcb->golden_table.dc_gpio_aux_ctrl_3_val = atom_dc_golden_table->dc_gpio_aux_ctrl_3_val;
2166         dcb->golden_table.dc_gpio_aux_ctrl_4_val = atom_dc_golden_table->dc_gpio_aux_ctrl_4_val;
2167         dcb->golden_table.dc_gpio_aux_ctrl_5_val = atom_dc_golden_table->dc_gpio_aux_ctrl_5_val;
2168
2169         return result;
2170 }
2171
2172
2173 static const struct dc_vbios_funcs vbios_funcs = {
2174         .get_connectors_number = bios_parser_get_connectors_number,
2175
2176         .get_connector_id = bios_parser_get_connector_id,
2177
2178         .get_src_obj = bios_parser_get_src_obj,
2179
2180         .get_i2c_info = bios_parser_get_i2c_info,
2181
2182         .get_hpd_info = bios_parser_get_hpd_info,
2183
2184         .get_device_tag = bios_parser_get_device_tag,
2185
2186         .get_spread_spectrum_info = bios_parser_get_spread_spectrum_info,
2187
2188         .get_ss_entry_number = bios_parser_get_ss_entry_number,
2189
2190         .get_embedded_panel_info = bios_parser_get_embedded_panel_info,
2191
2192         .get_gpio_pin_info = bios_parser_get_gpio_pin_info,
2193
2194         .get_encoder_cap_info = bios_parser_get_encoder_cap_info,
2195
2196         .is_device_id_supported = bios_parser_is_device_id_supported,
2197
2198         .is_accelerated_mode = bios_parser_is_accelerated_mode,
2199
2200         .set_scratch_critical_state = bios_parser_set_scratch_critical_state,
2201
2202
2203 /*       COMMANDS */
2204         .encoder_control = bios_parser_encoder_control,
2205
2206         .transmitter_control = bios_parser_transmitter_control,
2207
2208         .enable_crtc = bios_parser_enable_crtc,
2209
2210         .set_pixel_clock = bios_parser_set_pixel_clock,
2211
2212         .set_dce_clock = bios_parser_set_dce_clock,
2213
2214         .program_crtc_timing = bios_parser_program_crtc_timing,
2215
2216         .enable_disp_power_gating = bios_parser_enable_disp_power_gating,
2217
2218         .bios_parser_destroy = firmware_parser_destroy,
2219
2220         .get_board_layout_info = bios_get_board_layout_info,
2221         .pack_data_tables = bios_parser_pack_data_tables,
2222
2223         .get_atom_dc_golden_table = bios_get_atom_dc_golden_table,
2224
2225         .enable_lvtma_control = bios_parser_enable_lvtma_control
2226 };
2227
2228 static bool bios_parser2_construct(
2229         struct bios_parser *bp,
2230         struct bp_init_data *init,
2231         enum dce_version dce_version)
2232 {
2233         uint16_t *rom_header_offset = NULL;
2234         struct atom_rom_header_v2_2 *rom_header = NULL;
2235         struct display_object_info_table_v1_4 *object_info_tbl;
2236         struct atom_data_revision tbl_rev = {0};
2237
2238         if (!init)
2239                 return false;
2240
2241         if (!init->bios)
2242                 return false;
2243
2244         bp->base.funcs = &vbios_funcs;
2245         bp->base.bios = init->bios;
2246         bp->base.bios_size = bp->base.bios[OFFSET_TO_ATOM_ROM_IMAGE_SIZE] * BIOS_IMAGE_SIZE_UNIT;
2247
2248         bp->base.ctx = init->ctx;
2249
2250         bp->base.bios_local_image = NULL;
2251
2252         rom_header_offset =
2253                         GET_IMAGE(uint16_t, OFFSET_TO_ATOM_ROM_HEADER_POINTER);
2254
2255         if (!rom_header_offset)
2256                 return false;
2257
2258         rom_header = GET_IMAGE(struct atom_rom_header_v2_2, *rom_header_offset);
2259
2260         if (!rom_header)
2261                 return false;
2262
2263         get_atom_data_table_revision(&rom_header->table_header, &tbl_rev);
2264         if (!(tbl_rev.major >= 2 && tbl_rev.minor >= 2))
2265                 return false;
2266
2267         bp->master_data_tbl =
2268                 GET_IMAGE(struct atom_master_data_table_v2_1,
2269                                 rom_header->masterdatatable_offset);
2270
2271         if (!bp->master_data_tbl)
2272                 return false;
2273
2274         bp->object_info_tbl_offset = DATA_TABLES(displayobjectinfo);
2275
2276         if (!bp->object_info_tbl_offset)
2277                 return false;
2278
2279         object_info_tbl =
2280                         GET_IMAGE(struct display_object_info_table_v1_4,
2281                                                 bp->object_info_tbl_offset);
2282
2283         if (!object_info_tbl)
2284                 return false;
2285
2286         get_atom_data_table_revision(&object_info_tbl->table_header,
2287                 &bp->object_info_tbl.revision);
2288
2289         if (bp->object_info_tbl.revision.major == 1
2290                 && bp->object_info_tbl.revision.minor >= 4) {
2291                 struct display_object_info_table_v1_4 *tbl_v1_4;
2292
2293                 tbl_v1_4 = GET_IMAGE(struct display_object_info_table_v1_4,
2294                         bp->object_info_tbl_offset);
2295                 if (!tbl_v1_4)
2296                         return false;
2297
2298                 bp->object_info_tbl.v1_4 = tbl_v1_4;
2299         } else
2300                 return false;
2301
2302         dal_firmware_parser_init_cmd_tbl(bp);
2303         dal_bios_parser_init_cmd_tbl_helper2(&bp->cmd_helper, dce_version);
2304
2305         bp->base.integrated_info = bios_parser_create_integrated_info(&bp->base);
2306         bp->base.fw_info_valid = bios_parser_get_firmware_info(&bp->base, &bp->base.fw_info) == BP_RESULT_OK;
2307         bios_parser_get_vram_info(&bp->base, &bp->base.vram_info);
2308
2309         return true;
2310 }
2311
2312 struct dc_bios *firmware_parser_create(
2313         struct bp_init_data *init,
2314         enum dce_version dce_version)
2315 {
2316         struct bios_parser *bp = NULL;
2317
2318         bp = kzalloc(sizeof(struct bios_parser), GFP_KERNEL);
2319         if (!bp)
2320                 return NULL;
2321
2322         if (bios_parser2_construct(bp, init, dce_version))
2323                 return &bp->base;
2324
2325         kfree(bp);
2326         return NULL;
2327 }
2328
2329