1 /* $NetBSD: nouveau_bios.c,v 1.2 2016/01/29 21:46:03 riastradh Exp $ */
2
3 /*
4 * Copyright 2005-2006 Erik Waling
5 * Copyright 2006 Stephane Marchesin
6 * Copyright 2007-2009 Stuart Bennett
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
22 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
23 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * SOFTWARE.
25 */
26
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: nouveau_bios.c,v 1.2 2016/01/29 21:46:03 riastradh Exp $");
29
30 #include <subdev/bios.h>
31
32 #include <drm/drmP.h>
33
34 #include "nouveau_drm.h"
35 #include "nouveau_reg.h"
36 #include "dispnv04/hw.h"
37 #include "nouveau_encoder.h"
38
39 #include <linux/io-mapping.h>
40 #include <linux/firmware.h>
41
42 /* these defines are made up */
43 #define NV_CIO_CRE_44_HEADA 0x0
44 #define NV_CIO_CRE_44_HEADB 0x3
45 #define FEATURE_MOBILE 0x10 /* also FEATURE_QUADRO for BMP */
46
47 #define EDID1_LEN 128
48
49 #define BIOSLOG(sip, fmt, arg...) NV_DEBUG(sip->dev, fmt, ##arg)
50 #define LOG_OLD_VALUE(x)
51
52 struct init_exec {
53 bool execute;
54 bool repeat;
55 };
56
nv_cksum(const uint8_t * data,unsigned int length)57 static bool nv_cksum(const uint8_t *data, unsigned int length)
58 {
59 /*
60 * There's a few checksums in the BIOS, so here's a generic checking
61 * function.
62 */
63 int i;
64 uint8_t sum = 0;
65
66 for (i = 0; i < length; i++)
67 sum += data[i];
68
69 if (sum)
70 return true;
71
72 return false;
73 }
74
clkcmptable(struct nvbios * bios,uint16_t clktable,int pxclk)75 static uint16_t clkcmptable(struct nvbios *bios, uint16_t clktable, int pxclk)
76 {
77 int compare_record_len, i = 0;
78 uint16_t compareclk, scriptptr = 0;
79
80 if (bios->major_version < 5) /* pre BIT */
81 compare_record_len = 3;
82 else
83 compare_record_len = 4;
84
85 do {
86 compareclk = ROM16(bios->data[clktable + compare_record_len * i]);
87 if (pxclk >= compareclk * 10) {
88 if (bios->major_version < 5) {
89 uint8_t tmdssub = bios->data[clktable + 2 + compare_record_len * i];
90 scriptptr = ROM16(bios->data[bios->init_script_tbls_ptr + tmdssub * 2]);
91 } else
92 scriptptr = ROM16(bios->data[clktable + 2 + compare_record_len * i]);
93 break;
94 }
95 i++;
96 } while (compareclk);
97
98 return scriptptr;
99 }
100
101 static void
run_digital_op_script(struct drm_device * dev,uint16_t scriptptr,struct dcb_output * dcbent,int head,bool dl)102 run_digital_op_script(struct drm_device *dev, uint16_t scriptptr,
103 struct dcb_output *dcbent, int head, bool dl)
104 {
105 struct nouveau_drm *drm = nouveau_drm(dev);
106
107 NV_INFO(drm, "0x%04X: Parsing digital output script table\n",
108 scriptptr);
109 NVWriteVgaCrtc(dev, 0, NV_CIO_CRE_44, head ? NV_CIO_CRE_44_HEADB :
110 NV_CIO_CRE_44_HEADA);
111 nouveau_bios_run_init_table(dev, scriptptr, dcbent, head);
112
113 nv04_dfp_bind_head(dev, dcbent, head, dl);
114 }
115
call_lvds_manufacturer_script(struct drm_device * dev,struct dcb_output * dcbent,int head,enum LVDS_script script)116 static int call_lvds_manufacturer_script(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script)
117 {
118 struct nouveau_drm *drm = nouveau_drm(dev);
119 struct nvbios *bios = &drm->vbios;
120 uint8_t sub = bios->data[bios->fp.xlated_entry + script] + (bios->fp.link_c_increment && dcbent->or & DCB_OUTPUT_C ? 1 : 0);
121 uint16_t scriptofs = ROM16(bios->data[bios->init_script_tbls_ptr + sub * 2]);
122
123 if (!bios->fp.xlated_entry || !sub || !scriptofs)
124 return -EINVAL;
125
126 run_digital_op_script(dev, scriptofs, dcbent, head, bios->fp.dual_link);
127
128 if (script == LVDS_PANEL_OFF) {
129 /* off-on delay in ms */
130 mdelay(ROM16(bios->data[bios->fp.xlated_entry + 7]));
131 }
132 #ifdef __powerpc__
133 /* Powerbook specific quirks */
134 if (script == LVDS_RESET &&
135 (dev->pdev->device == 0x0179 || dev->pdev->device == 0x0189 ||
136 dev->pdev->device == 0x0329))
137 nv_write_tmds(dev, dcbent->or, 0, 0x02, 0x72);
138 #endif
139
140 return 0;
141 }
142
run_lvds_table(struct drm_device * dev,struct dcb_output * dcbent,int head,enum LVDS_script script,int pxclk)143 static int run_lvds_table(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script, int pxclk)
144 {
145 /*
146 * The BIT LVDS table's header has the information to setup the
147 * necessary registers. Following the standard 4 byte header are:
148 * A bitmask byte and a dual-link transition pxclk value for use in
149 * selecting the init script when not using straps; 4 script pointers
150 * for panel power, selected by output and on/off; and 8 table pointers
151 * for panel init, the needed one determined by output, and bits in the
152 * conf byte. These tables are similar to the TMDS tables, consisting
153 * of a list of pxclks and script pointers.
154 */
155 struct nouveau_drm *drm = nouveau_drm(dev);
156 struct nvbios *bios = &drm->vbios;
157 unsigned int outputset = (dcbent->or == 4) ? 1 : 0;
158 uint16_t scriptptr = 0, clktable;
159
160 /*
161 * For now we assume version 3.0 table - g80 support will need some
162 * changes
163 */
164
165 switch (script) {
166 case LVDS_INIT:
167 return -ENOSYS;
168 case LVDS_BACKLIGHT_ON:
169 case LVDS_PANEL_ON:
170 scriptptr = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 7 + outputset * 2]);
171 break;
172 case LVDS_BACKLIGHT_OFF:
173 case LVDS_PANEL_OFF:
174 scriptptr = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 11 + outputset * 2]);
175 break;
176 case LVDS_RESET:
177 clktable = bios->fp.lvdsmanufacturerpointer + 15;
178 if (dcbent->or == 4)
179 clktable += 8;
180
181 if (dcbent->lvdsconf.use_straps_for_mode) {
182 if (bios->fp.dual_link)
183 clktable += 4;
184 if (bios->fp.if_is_24bit)
185 clktable += 2;
186 } else {
187 /* using EDID */
188 int cmpval_24bit = (dcbent->or == 4) ? 4 : 1;
189
190 if (bios->fp.dual_link) {
191 clktable += 4;
192 cmpval_24bit <<= 1;
193 }
194
195 if (bios->fp.strapless_is_24bit & cmpval_24bit)
196 clktable += 2;
197 }
198
199 clktable = ROM16(bios->data[clktable]);
200 if (!clktable) {
201 NV_ERROR(drm, "Pixel clock comparison table not found\n");
202 return -ENOENT;
203 }
204 scriptptr = clkcmptable(bios, clktable, pxclk);
205 }
206
207 if (!scriptptr) {
208 NV_ERROR(drm, "LVDS output init script not found\n");
209 return -ENOENT;
210 }
211 run_digital_op_script(dev, scriptptr, dcbent, head, bios->fp.dual_link);
212
213 return 0;
214 }
215
call_lvds_script(struct drm_device * dev,struct dcb_output * dcbent,int head,enum LVDS_script script,int pxclk)216 int call_lvds_script(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script, int pxclk)
217 {
218 /*
219 * LVDS operations are multiplexed in an effort to present a single API
220 * which works with two vastly differing underlying structures.
221 * This acts as the demux
222 */
223
224 struct nouveau_drm *drm = nouveau_drm(dev);
225 struct nouveau_device *device = nv_device(drm->device);
226 struct nvbios *bios = &drm->vbios;
227 uint8_t lvds_ver = bios->data[bios->fp.lvdsmanufacturerpointer];
228 uint32_t sel_clk_binding, sel_clk;
229 int ret;
230
231 if (bios->fp.last_script_invoc == (script << 1 | head) || !lvds_ver ||
232 (lvds_ver >= 0x30 && script == LVDS_INIT))
233 return 0;
234
235 if (!bios->fp.lvds_init_run) {
236 bios->fp.lvds_init_run = true;
237 call_lvds_script(dev, dcbent, head, LVDS_INIT, pxclk);
238 }
239
240 if (script == LVDS_PANEL_ON && bios->fp.reset_after_pclk_change)
241 call_lvds_script(dev, dcbent, head, LVDS_RESET, pxclk);
242 if (script == LVDS_RESET && bios->fp.power_off_for_reset)
243 call_lvds_script(dev, dcbent, head, LVDS_PANEL_OFF, pxclk);
244
245 NV_INFO(drm, "Calling LVDS script %d:\n", script);
246
247 /* don't let script change pll->head binding */
248 sel_clk_binding = nv_rd32(device, NV_PRAMDAC_SEL_CLK) & 0x50000;
249
250 if (lvds_ver < 0x30)
251 ret = call_lvds_manufacturer_script(dev, dcbent, head, script);
252 else
253 ret = run_lvds_table(dev, dcbent, head, script, pxclk);
254
255 bios->fp.last_script_invoc = (script << 1 | head);
256
257 sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK) & ~0x50000;
258 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, sel_clk | sel_clk_binding);
259 /* some scripts set a value in NV_PBUS_POWERCTRL_2 and break video overlay */
260 nv_wr32(device, NV_PBUS_POWERCTRL_2, 0);
261
262 return ret;
263 }
264
265 struct lvdstableheader {
266 uint8_t lvds_ver, headerlen, recordlen;
267 };
268
parse_lvds_manufacturer_table_header(struct drm_device * dev,struct nvbios * bios,struct lvdstableheader * lth)269 static int parse_lvds_manufacturer_table_header(struct drm_device *dev, struct nvbios *bios, struct lvdstableheader *lth)
270 {
271 /*
272 * BMP version (0xa) LVDS table has a simple header of version and
273 * record length. The BIT LVDS table has the typical BIT table header:
274 * version byte, header length byte, record length byte, and a byte for
275 * the maximum number of records that can be held in the table.
276 */
277
278 struct nouveau_drm *drm = nouveau_drm(dev);
279 uint8_t lvds_ver, headerlen, recordlen;
280
281 memset(lth, 0, sizeof(struct lvdstableheader));
282
283 if (bios->fp.lvdsmanufacturerpointer == 0x0) {
284 NV_ERROR(drm, "Pointer to LVDS manufacturer table invalid\n");
285 return -EINVAL;
286 }
287
288 lvds_ver = bios->data[bios->fp.lvdsmanufacturerpointer];
289
290 switch (lvds_ver) {
291 case 0x0a: /* pre NV40 */
292 headerlen = 2;
293 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1];
294 break;
295 case 0x30: /* NV4x */
296 headerlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1];
297 if (headerlen < 0x1f) {
298 NV_ERROR(drm, "LVDS table header not understood\n");
299 return -EINVAL;
300 }
301 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 2];
302 break;
303 case 0x40: /* G80/G90 */
304 headerlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1];
305 if (headerlen < 0x7) {
306 NV_ERROR(drm, "LVDS table header not understood\n");
307 return -EINVAL;
308 }
309 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 2];
310 break;
311 default:
312 NV_ERROR(drm,
313 "LVDS table revision %d.%d not currently supported\n",
314 lvds_ver >> 4, lvds_ver & 0xf);
315 return -ENOSYS;
316 }
317
318 lth->lvds_ver = lvds_ver;
319 lth->headerlen = headerlen;
320 lth->recordlen = recordlen;
321
322 return 0;
323 }
324
325 static int
get_fp_strap(struct drm_device * dev,struct nvbios * bios)326 get_fp_strap(struct drm_device *dev, struct nvbios *bios)
327 {
328 struct nouveau_device *device = nouveau_dev(dev);
329
330 /*
331 * The fp strap is normally dictated by the "User Strap" in
332 * PEXTDEV_BOOT_0[20:16], but on BMP cards when bit 2 of the
333 * Internal_Flags struct at 0x48 is set, the user strap gets overriden
334 * by the PCI subsystem ID during POST, but not before the previous user
335 * strap has been committed to CR58 for CR57=0xf on head A, which may be
336 * read and used instead
337 */
338
339 if (bios->major_version < 5 && bios->data[0x48] & 0x4)
340 return NVReadVgaCrtc5758(dev, 0, 0xf) & 0xf;
341
342 if (device->card_type >= NV_50)
343 return (nv_rd32(device, NV_PEXTDEV_BOOT_0) >> 24) & 0xf;
344 else
345 return (nv_rd32(device, NV_PEXTDEV_BOOT_0) >> 16) & 0xf;
346 }
347
parse_fp_mode_table(struct drm_device * dev,struct nvbios * bios)348 static int parse_fp_mode_table(struct drm_device *dev, struct nvbios *bios)
349 {
350 struct nouveau_drm *drm = nouveau_drm(dev);
351 uint8_t *fptable;
352 uint8_t fptable_ver, headerlen = 0, recordlen, fpentries = 0xf, fpindex;
353 int ret, ofs, fpstrapping;
354 struct lvdstableheader lth;
355
356 if (bios->fp.fptablepointer == 0x0) {
357 /* Apple cards don't have the fp table; the laptops use DDC */
358 /* The table is also missing on some x86 IGPs */
359 #ifndef __powerpc__
360 NV_ERROR(drm, "Pointer to flat panel table invalid\n");
361 #endif
362 bios->digital_min_front_porch = 0x4b;
363 return 0;
364 }
365
366 fptable = &bios->data[bios->fp.fptablepointer];
367 fptable_ver = fptable[0];
368
369 switch (fptable_ver) {
370 /*
371 * BMP version 0x5.0x11 BIOSen have version 1 like tables, but no
372 * version field, and miss one of the spread spectrum/PWM bytes.
373 * This could affect early GF2Go parts (not seen any appropriate ROMs
374 * though). Here we assume that a version of 0x05 matches this case
375 * (combining with a BMP version check would be better), as the
376 * common case for the panel type field is 0x0005, and that is in
377 * fact what we are reading the first byte of.
378 */
379 case 0x05: /* some NV10, 11, 15, 16 */
380 recordlen = 42;
381 ofs = -1;
382 break;
383 case 0x10: /* some NV15/16, and NV11+ */
384 recordlen = 44;
385 ofs = 0;
386 break;
387 case 0x20: /* NV40+ */
388 headerlen = fptable[1];
389 recordlen = fptable[2];
390 fpentries = fptable[3];
391 /*
392 * fptable[4] is the minimum
393 * RAMDAC_FP_HCRTC -> RAMDAC_FP_HSYNC_START gap
394 */
395 bios->digital_min_front_porch = fptable[4];
396 ofs = -7;
397 break;
398 default:
399 NV_ERROR(drm,
400 "FP table revision %d.%d not currently supported\n",
401 fptable_ver >> 4, fptable_ver & 0xf);
402 return -ENOSYS;
403 }
404
405 if (!bios->is_mobile) /* !mobile only needs digital_min_front_porch */
406 return 0;
407
408 ret = parse_lvds_manufacturer_table_header(dev, bios, <h);
409 if (ret)
410 return ret;
411
412 if (lth.lvds_ver == 0x30 || lth.lvds_ver == 0x40) {
413 bios->fp.fpxlatetableptr = bios->fp.lvdsmanufacturerpointer +
414 lth.headerlen + 1;
415 bios->fp.xlatwidth = lth.recordlen;
416 }
417 if (bios->fp.fpxlatetableptr == 0x0) {
418 NV_ERROR(drm, "Pointer to flat panel xlat table invalid\n");
419 return -EINVAL;
420 }
421
422 fpstrapping = get_fp_strap(dev, bios);
423
424 fpindex = bios->data[bios->fp.fpxlatetableptr +
425 fpstrapping * bios->fp.xlatwidth];
426
427 if (fpindex > fpentries) {
428 NV_ERROR(drm, "Bad flat panel table index\n");
429 return -ENOENT;
430 }
431
432 /* nv4x cards need both a strap value and fpindex of 0xf to use DDC */
433 if (lth.lvds_ver > 0x10)
434 bios->fp_no_ddc = fpstrapping != 0xf || fpindex != 0xf;
435
436 /*
437 * If either the strap or xlated fpindex value are 0xf there is no
438 * panel using a strap-derived bios mode present. this condition
439 * includes, but is different from, the DDC panel indicator above
440 */
441 if (fpstrapping == 0xf || fpindex == 0xf)
442 return 0;
443
444 bios->fp.mode_ptr = bios->fp.fptablepointer + headerlen +
445 recordlen * fpindex + ofs;
446
447 NV_INFO(drm, "BIOS FP mode: %dx%d (%dkHz pixel clock)\n",
448 ROM16(bios->data[bios->fp.mode_ptr + 11]) + 1,
449 ROM16(bios->data[bios->fp.mode_ptr + 25]) + 1,
450 ROM16(bios->data[bios->fp.mode_ptr + 7]) * 10);
451
452 return 0;
453 }
454
nouveau_bios_fp_mode(struct drm_device * dev,struct drm_display_mode * mode)455 bool nouveau_bios_fp_mode(struct drm_device *dev, struct drm_display_mode *mode)
456 {
457 struct nouveau_drm *drm = nouveau_drm(dev);
458 struct nvbios *bios = &drm->vbios;
459 uint8_t *mode_entry = &bios->data[bios->fp.mode_ptr];
460
461 if (!mode) /* just checking whether we can produce a mode */
462 return bios->fp.mode_ptr;
463
464 memset(mode, 0, sizeof(struct drm_display_mode));
465 /*
466 * For version 1.0 (version in byte 0):
467 * bytes 1-2 are "panel type", including bits on whether Colour/mono,
468 * single/dual link, and type (TFT etc.)
469 * bytes 3-6 are bits per colour in RGBX
470 */
471 mode->clock = ROM16(mode_entry[7]) * 10;
472 /* bytes 9-10 is HActive */
473 mode->hdisplay = ROM16(mode_entry[11]) + 1;
474 /*
475 * bytes 13-14 is HValid Start
476 * bytes 15-16 is HValid End
477 */
478 mode->hsync_start = ROM16(mode_entry[17]) + 1;
479 mode->hsync_end = ROM16(mode_entry[19]) + 1;
480 mode->htotal = ROM16(mode_entry[21]) + 1;
481 /* bytes 23-24, 27-30 similarly, but vertical */
482 mode->vdisplay = ROM16(mode_entry[25]) + 1;
483 mode->vsync_start = ROM16(mode_entry[31]) + 1;
484 mode->vsync_end = ROM16(mode_entry[33]) + 1;
485 mode->vtotal = ROM16(mode_entry[35]) + 1;
486 mode->flags |= (mode_entry[37] & 0x10) ?
487 DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
488 mode->flags |= (mode_entry[37] & 0x1) ?
489 DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
490 /*
491 * bytes 38-39 relate to spread spectrum settings
492 * bytes 40-43 are something to do with PWM
493 */
494
495 mode->status = MODE_OK;
496 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
497 drm_mode_set_name(mode);
498 return bios->fp.mode_ptr;
499 }
500
nouveau_bios_parse_lvds_table(struct drm_device * dev,int pxclk,bool * dl,bool * if_is_24bit)501 int nouveau_bios_parse_lvds_table(struct drm_device *dev, int pxclk, bool *dl, bool *if_is_24bit)
502 {
503 /*
504 * The LVDS table header is (mostly) described in
505 * parse_lvds_manufacturer_table_header(): the BIT header additionally
506 * contains the dual-link transition pxclk (in 10s kHz), at byte 5 - if
507 * straps are not being used for the panel, this specifies the frequency
508 * at which modes should be set up in the dual link style.
509 *
510 * Following the header, the BMP (ver 0xa) table has several records,
511 * indexed by a separate xlat table, indexed in turn by the fp strap in
512 * EXTDEV_BOOT. Each record had a config byte, followed by 6 script
513 * numbers for use by INIT_SUB which controlled panel init and power,
514 * and finally a dword of ms to sleep between power off and on
515 * operations.
516 *
517 * In the BIT versions, the table following the header serves as an
518 * integrated config and xlat table: the records in the table are
519 * indexed by the FP strap nibble in EXTDEV_BOOT, and each record has
520 * two bytes - the first as a config byte, the second for indexing the
521 * fp mode table pointed to by the BIT 'D' table
522 *
523 * DDC is not used until after card init, so selecting the correct table
524 * entry and setting the dual link flag for EDID equipped panels,
525 * requiring tests against the native-mode pixel clock, cannot be done
526 * until later, when this function should be called with non-zero pxclk
527 */
528 struct nouveau_drm *drm = nouveau_drm(dev);
529 struct nvbios *bios = &drm->vbios;
530 int fpstrapping = get_fp_strap(dev, bios), lvdsmanufacturerindex = 0;
531 struct lvdstableheader lth;
532 uint16_t lvdsofs;
533 int ret, chip_version = bios->chip_version;
534
535 ret = parse_lvds_manufacturer_table_header(dev, bios, <h);
536 if (ret)
537 return ret;
538
539 switch (lth.lvds_ver) {
540 case 0x0a: /* pre NV40 */
541 lvdsmanufacturerindex = bios->data[
542 bios->fp.fpxlatemanufacturertableptr +
543 fpstrapping];
544
545 /* we're done if this isn't the EDID panel case */
546 if (!pxclk)
547 break;
548
549 if (chip_version < 0x25) {
550 /* nv17 behaviour
551 *
552 * It seems the old style lvds script pointer is reused
553 * to select 18/24 bit colour depth for EDID panels.
554 */
555 lvdsmanufacturerindex =
556 (bios->legacy.lvds_single_a_script_ptr & 1) ?
557 2 : 0;
558 if (pxclk >= bios->fp.duallink_transition_clk)
559 lvdsmanufacturerindex++;
560 } else if (chip_version < 0x30) {
561 /* nv28 behaviour (off-chip encoder)
562 *
563 * nv28 does a complex dance of first using byte 121 of
564 * the EDID to choose the lvdsmanufacturerindex, then
565 * later attempting to match the EDID manufacturer and
566 * product IDs in a table (signature 'pidt' (panel id
567 * table?)), setting an lvdsmanufacturerindex of 0 and
568 * an fp strap of the match index (or 0xf if none)
569 */
570 lvdsmanufacturerindex = 0;
571 } else {
572 /* nv31, nv34 behaviour */
573 lvdsmanufacturerindex = 0;
574 if (pxclk >= bios->fp.duallink_transition_clk)
575 lvdsmanufacturerindex = 2;
576 if (pxclk >= 140000)
577 lvdsmanufacturerindex = 3;
578 }
579
580 /*
581 * nvidia set the high nibble of (cr57=f, cr58) to
582 * lvdsmanufacturerindex in this case; we don't
583 */
584 break;
585 case 0x30: /* NV4x */
586 case 0x40: /* G80/G90 */
587 lvdsmanufacturerindex = fpstrapping;
588 break;
589 default:
590 NV_ERROR(drm, "LVDS table revision not currently supported\n");
591 return -ENOSYS;
592 }
593
594 lvdsofs = bios->fp.xlated_entry = bios->fp.lvdsmanufacturerpointer + lth.headerlen + lth.recordlen * lvdsmanufacturerindex;
595 switch (lth.lvds_ver) {
596 case 0x0a:
597 bios->fp.power_off_for_reset = bios->data[lvdsofs] & 1;
598 bios->fp.reset_after_pclk_change = bios->data[lvdsofs] & 2;
599 bios->fp.dual_link = bios->data[lvdsofs] & 4;
600 bios->fp.link_c_increment = bios->data[lvdsofs] & 8;
601 *if_is_24bit = bios->data[lvdsofs] & 16;
602 break;
603 case 0x30:
604 case 0x40:
605 /*
606 * No sign of the "power off for reset" or "reset for panel
607 * on" bits, but it's safer to assume we should
608 */
609 bios->fp.power_off_for_reset = true;
610 bios->fp.reset_after_pclk_change = true;
611
612 /*
613 * It's ok lvdsofs is wrong for nv4x edid case; dual_link is
614 * over-written, and if_is_24bit isn't used
615 */
616 bios->fp.dual_link = bios->data[lvdsofs] & 1;
617 bios->fp.if_is_24bit = bios->data[lvdsofs] & 2;
618 bios->fp.strapless_is_24bit = bios->data[bios->fp.lvdsmanufacturerpointer + 4];
619 bios->fp.duallink_transition_clk = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 5]) * 10;
620 break;
621 }
622
623 /* set dual_link flag for EDID case */
624 if (pxclk && (chip_version < 0x25 || chip_version > 0x28))
625 bios->fp.dual_link = (pxclk >= bios->fp.duallink_transition_clk);
626
627 *dl = bios->fp.dual_link;
628
629 return 0;
630 }
631
run_tmds_table(struct drm_device * dev,struct dcb_output * dcbent,int head,int pxclk)632 int run_tmds_table(struct drm_device *dev, struct dcb_output *dcbent, int head, int pxclk)
633 {
634 /*
635 * the pxclk parameter is in kHz
636 *
637 * This runs the TMDS regs setting code found on BIT bios cards
638 *
639 * For ffs(or) == 1 use the first table, for ffs(or) == 2 and
640 * ffs(or) == 3, use the second.
641 */
642
643 struct nouveau_drm *drm = nouveau_drm(dev);
644 struct nouveau_device *device = nv_device(drm->device);
645 struct nvbios *bios = &drm->vbios;
646 int cv = bios->chip_version;
647 uint16_t clktable = 0, scriptptr;
648 uint32_t sel_clk_binding, sel_clk;
649
650 /* pre-nv17 off-chip tmds uses scripts, post nv17 doesn't */
651 if (cv >= 0x17 && cv != 0x1a && cv != 0x20 &&
652 dcbent->location != DCB_LOC_ON_CHIP)
653 return 0;
654
655 switch (ffs(dcbent->or)) {
656 case 1:
657 clktable = bios->tmds.output0_script_ptr;
658 break;
659 case 2:
660 case 3:
661 clktable = bios->tmds.output1_script_ptr;
662 break;
663 }
664
665 if (!clktable) {
666 NV_ERROR(drm, "Pixel clock comparison table not found\n");
667 return -EINVAL;
668 }
669
670 scriptptr = clkcmptable(bios, clktable, pxclk);
671
672 if (!scriptptr) {
673 NV_ERROR(drm, "TMDS output init script not found\n");
674 return -ENOENT;
675 }
676
677 /* don't let script change pll->head binding */
678 sel_clk_binding = nv_rd32(device, NV_PRAMDAC_SEL_CLK) & 0x50000;
679 run_digital_op_script(dev, scriptptr, dcbent, head, pxclk >= 165000);
680 sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK) & ~0x50000;
681 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, sel_clk | sel_clk_binding);
682
683 return 0;
684 }
685
parse_script_table_pointers(struct nvbios * bios,uint16_t offset)686 static void parse_script_table_pointers(struct nvbios *bios, uint16_t offset)
687 {
688 /*
689 * Parses the init table segment for pointers used in script execution.
690 *
691 * offset + 0 (16 bits): init script tables pointer
692 * offset + 2 (16 bits): macro index table pointer
693 * offset + 4 (16 bits): macro table pointer
694 * offset + 6 (16 bits): condition table pointer
695 * offset + 8 (16 bits): io condition table pointer
696 * offset + 10 (16 bits): io flag condition table pointer
697 * offset + 12 (16 bits): init function table pointer
698 */
699
700 bios->init_script_tbls_ptr = ROM16(bios->data[offset]);
701 }
702
parse_bit_A_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)703 static int parse_bit_A_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
704 {
705 /*
706 * Parses the load detect values for g80 cards.
707 *
708 * offset + 0 (16 bits): loadval table pointer
709 */
710
711 struct nouveau_drm *drm = nouveau_drm(dev);
712 uint16_t load_table_ptr;
713 uint8_t version, headerlen, entrylen, num_entries;
714
715 if (bitentry->length != 3) {
716 NV_ERROR(drm, "Do not understand BIT A table\n");
717 return -EINVAL;
718 }
719
720 load_table_ptr = ROM16(bios->data[bitentry->offset]);
721
722 if (load_table_ptr == 0x0) {
723 NV_DEBUG(drm, "Pointer to BIT loadval table invalid\n");
724 return -EINVAL;
725 }
726
727 version = bios->data[load_table_ptr];
728
729 if (version != 0x10) {
730 NV_ERROR(drm, "BIT loadval table version %d.%d not supported\n",
731 version >> 4, version & 0xF);
732 return -ENOSYS;
733 }
734
735 headerlen = bios->data[load_table_ptr + 1];
736 entrylen = bios->data[load_table_ptr + 2];
737 num_entries = bios->data[load_table_ptr + 3];
738
739 if (headerlen != 4 || entrylen != 4 || num_entries != 2) {
740 NV_ERROR(drm, "Do not understand BIT loadval table\n");
741 return -EINVAL;
742 }
743
744 /* First entry is normal dac, 2nd tv-out perhaps? */
745 bios->dactestval = ROM32(bios->data[load_table_ptr + headerlen]) & 0x3ff;
746
747 return 0;
748 }
749
parse_bit_display_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)750 static int parse_bit_display_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
751 {
752 /*
753 * Parses the flat panel table segment that the bit entry points to.
754 * Starting at bitentry->offset:
755 *
756 * offset + 0 (16 bits): ??? table pointer - seems to have 18 byte
757 * records beginning with a freq.
758 * offset + 2 (16 bits): mode table pointer
759 */
760 struct nouveau_drm *drm = nouveau_drm(dev);
761
762 if (bitentry->length != 4) {
763 NV_ERROR(drm, "Do not understand BIT display table\n");
764 return -EINVAL;
765 }
766
767 bios->fp.fptablepointer = ROM16(bios->data[bitentry->offset + 2]);
768
769 return 0;
770 }
771
parse_bit_init_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)772 static int parse_bit_init_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
773 {
774 /*
775 * Parses the init table segment that the bit entry points to.
776 *
777 * See parse_script_table_pointers for layout
778 */
779 struct nouveau_drm *drm = nouveau_drm(dev);
780
781 if (bitentry->length < 14) {
782 NV_ERROR(drm, "Do not understand init table\n");
783 return -EINVAL;
784 }
785
786 parse_script_table_pointers(bios, bitentry->offset);
787 return 0;
788 }
789
parse_bit_i_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)790 static int parse_bit_i_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
791 {
792 /*
793 * BIT 'i' (info?) table
794 *
795 * offset + 0 (32 bits): BIOS version dword (as in B table)
796 * offset + 5 (8 bits): BIOS feature byte (same as for BMP?)
797 * offset + 13 (16 bits): pointer to table containing DAC load
798 * detection comparison values
799 *
800 * There's other things in the table, purpose unknown
801 */
802
803 struct nouveau_drm *drm = nouveau_drm(dev);
804 uint16_t daccmpoffset;
805 uint8_t dacver, dacheaderlen;
806
807 if (bitentry->length < 6) {
808 NV_ERROR(drm, "BIT i table too short for needed information\n");
809 return -EINVAL;
810 }
811
812 /*
813 * bit 4 seems to indicate a mobile bios (doesn't suffer from BMP's
814 * Quadro identity crisis), other bits possibly as for BMP feature byte
815 */
816 bios->feature_byte = bios->data[bitentry->offset + 5];
817 bios->is_mobile = bios->feature_byte & FEATURE_MOBILE;
818
819 if (bitentry->length < 15) {
820 NV_WARN(drm, "BIT i table not long enough for DAC load "
821 "detection comparison table\n");
822 return -EINVAL;
823 }
824
825 daccmpoffset = ROM16(bios->data[bitentry->offset + 13]);
826
827 /* doesn't exist on g80 */
828 if (!daccmpoffset)
829 return 0;
830
831 /*
832 * The first value in the table, following the header, is the
833 * comparison value, the second entry is a comparison value for
834 * TV load detection.
835 */
836
837 dacver = bios->data[daccmpoffset];
838 dacheaderlen = bios->data[daccmpoffset + 1];
839
840 if (dacver != 0x00 && dacver != 0x10) {
841 NV_WARN(drm, "DAC load detection comparison table version "
842 "%d.%d not known\n", dacver >> 4, dacver & 0xf);
843 return -ENOSYS;
844 }
845
846 bios->dactestval = ROM32(bios->data[daccmpoffset + dacheaderlen]);
847 bios->tvdactestval = ROM32(bios->data[daccmpoffset + dacheaderlen + 4]);
848
849 return 0;
850 }
851
parse_bit_lvds_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)852 static int parse_bit_lvds_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
853 {
854 /*
855 * Parses the LVDS table segment that the bit entry points to.
856 * Starting at bitentry->offset:
857 *
858 * offset + 0 (16 bits): LVDS strap xlate table pointer
859 */
860
861 struct nouveau_drm *drm = nouveau_drm(dev);
862
863 if (bitentry->length != 2) {
864 NV_ERROR(drm, "Do not understand BIT LVDS table\n");
865 return -EINVAL;
866 }
867
868 /*
869 * No idea if it's still called the LVDS manufacturer table, but
870 * the concept's close enough.
871 */
872 bios->fp.lvdsmanufacturerpointer = ROM16(bios->data[bitentry->offset]);
873
874 return 0;
875 }
876
877 static int
parse_bit_M_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)878 parse_bit_M_tbl_entry(struct drm_device *dev, struct nvbios *bios,
879 struct bit_entry *bitentry)
880 {
881 /*
882 * offset + 2 (8 bits): number of options in an
883 * INIT_RAM_RESTRICT_ZM_REG_GROUP opcode option set
884 * offset + 3 (16 bits): pointer to strap xlate table for RAM
885 * restrict option selection
886 *
887 * There's a bunch of bits in this table other than the RAM restrict
888 * stuff that we don't use - their use currently unknown
889 */
890
891 /*
892 * Older bios versions don't have a sufficiently long table for
893 * what we want
894 */
895 if (bitentry->length < 0x5)
896 return 0;
897
898 if (bitentry->version < 2) {
899 bios->ram_restrict_group_count = bios->data[bitentry->offset + 2];
900 bios->ram_restrict_tbl_ptr = ROM16(bios->data[bitentry->offset + 3]);
901 } else {
902 bios->ram_restrict_group_count = bios->data[bitentry->offset + 0];
903 bios->ram_restrict_tbl_ptr = ROM16(bios->data[bitentry->offset + 1]);
904 }
905
906 return 0;
907 }
908
parse_bit_tmds_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)909 static int parse_bit_tmds_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
910 {
911 /*
912 * Parses the pointer to the TMDS table
913 *
914 * Starting at bitentry->offset:
915 *
916 * offset + 0 (16 bits): TMDS table pointer
917 *
918 * The TMDS table is typically found just before the DCB table, with a
919 * characteristic signature of 0x11,0x13 (1.1 being version, 0x13 being
920 * length?)
921 *
922 * At offset +7 is a pointer to a script, which I don't know how to
923 * run yet.
924 * At offset +9 is a pointer to another script, likewise
925 * Offset +11 has a pointer to a table where the first word is a pxclk
926 * frequency and the second word a pointer to a script, which should be
927 * run if the comparison pxclk frequency is less than the pxclk desired.
928 * This repeats for decreasing comparison frequencies
929 * Offset +13 has a pointer to a similar table
930 * The selection of table (and possibly +7/+9 script) is dictated by
931 * "or" from the DCB.
932 */
933
934 struct nouveau_drm *drm = nouveau_drm(dev);
935 uint16_t tmdstableptr, script1, script2;
936
937 if (bitentry->length != 2) {
938 NV_ERROR(drm, "Do not understand BIT TMDS table\n");
939 return -EINVAL;
940 }
941
942 tmdstableptr = ROM16(bios->data[bitentry->offset]);
943 if (!tmdstableptr) {
944 NV_ERROR(drm, "Pointer to TMDS table invalid\n");
945 return -EINVAL;
946 }
947
948 NV_INFO(drm, "TMDS table version %d.%d\n",
949 bios->data[tmdstableptr] >> 4, bios->data[tmdstableptr] & 0xf);
950
951 /* nv50+ has v2.0, but we don't parse it atm */
952 if (bios->data[tmdstableptr] != 0x11)
953 return -ENOSYS;
954
955 /*
956 * These two scripts are odd: they don't seem to get run even when
957 * they are not stubbed.
958 */
959 script1 = ROM16(bios->data[tmdstableptr + 7]);
960 script2 = ROM16(bios->data[tmdstableptr + 9]);
961 if (bios->data[script1] != 'q' || bios->data[script2] != 'q')
962 NV_WARN(drm, "TMDS table script pointers not stubbed\n");
963
964 bios->tmds.output0_script_ptr = ROM16(bios->data[tmdstableptr + 11]);
965 bios->tmds.output1_script_ptr = ROM16(bios->data[tmdstableptr + 13]);
966
967 return 0;
968 }
969
970 struct bit_table {
971 const char id;
972 int (* const parse_fn)(struct drm_device *, struct nvbios *, struct bit_entry *);
973 };
974
975 #define BIT_TABLE(id, funcid) ((struct bit_table){ id, parse_bit_##funcid##_tbl_entry })
976
977 int
bit_table(struct drm_device * dev,u8 id,struct bit_entry * bit)978 bit_table(struct drm_device *dev, u8 id, struct bit_entry *bit)
979 {
980 struct nouveau_drm *drm = nouveau_drm(dev);
981 struct nvbios *bios = &drm->vbios;
982 u8 entries, *entry;
983
984 if (bios->type != NVBIOS_BIT)
985 return -ENODEV;
986
987 entries = bios->data[bios->offset + 10];
988 entry = &bios->data[bios->offset + 12];
989 while (entries--) {
990 if (entry[0] == id) {
991 bit->id = entry[0];
992 bit->version = entry[1];
993 bit->length = ROM16(entry[2]);
994 bit->offset = ROM16(entry[4]);
995 bit->data = ROMPTR(dev, entry[4]);
996 return 0;
997 }
998
999 entry += bios->data[bios->offset + 9];
1000 }
1001
1002 return -ENOENT;
1003 }
1004
1005 static int
parse_bit_table(struct nvbios * bios,const uint16_t bitoffset,struct bit_table * table)1006 parse_bit_table(struct nvbios *bios, const uint16_t bitoffset,
1007 struct bit_table *table)
1008 {
1009 struct drm_device *dev = bios->dev;
1010 struct nouveau_drm *drm = nouveau_drm(dev);
1011 struct bit_entry bitentry;
1012
1013 if (bit_table(dev, table->id, &bitentry) == 0)
1014 return table->parse_fn(dev, bios, &bitentry);
1015
1016 NV_INFO(drm, "BIT table '%c' not found\n", table->id);
1017 return -ENOSYS;
1018 }
1019
1020 static int
parse_bit_structure(struct nvbios * bios,const uint16_t bitoffset)1021 parse_bit_structure(struct nvbios *bios, const uint16_t bitoffset)
1022 {
1023 int ret;
1024
1025 /*
1026 * The only restriction on parsing order currently is having 'i' first
1027 * for use of bios->*_version or bios->feature_byte while parsing;
1028 * functions shouldn't be actually *doing* anything apart from pulling
1029 * data from the image into the bios struct, thus no interdependencies
1030 */
1031 ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('i', i));
1032 if (ret) /* info? */
1033 return ret;
1034 if (bios->major_version >= 0x60) /* g80+ */
1035 parse_bit_table(bios, bitoffset, &BIT_TABLE('A', A));
1036 parse_bit_table(bios, bitoffset, &BIT_TABLE('D', display));
1037 ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('I', init));
1038 if (ret)
1039 return ret;
1040 parse_bit_table(bios, bitoffset, &BIT_TABLE('M', M)); /* memory? */
1041 parse_bit_table(bios, bitoffset, &BIT_TABLE('L', lvds));
1042 parse_bit_table(bios, bitoffset, &BIT_TABLE('T', tmds));
1043
1044 return 0;
1045 }
1046
parse_bmp_structure(struct drm_device * dev,struct nvbios * bios,unsigned int offset)1047 static int parse_bmp_structure(struct drm_device *dev, struct nvbios *bios, unsigned int offset)
1048 {
1049 /*
1050 * Parses the BMP structure for useful things, but does not act on them
1051 *
1052 * offset + 5: BMP major version
1053 * offset + 6: BMP minor version
1054 * offset + 9: BMP feature byte
1055 * offset + 10: BCD encoded BIOS version
1056 *
1057 * offset + 18: init script table pointer (for bios versions < 5.10h)
1058 * offset + 20: extra init script table pointer (for bios
1059 * versions < 5.10h)
1060 *
1061 * offset + 24: memory init table pointer (used on early bios versions)
1062 * offset + 26: SDR memory sequencing setup data table
1063 * offset + 28: DDR memory sequencing setup data table
1064 *
1065 * offset + 54: index of I2C CRTC pair to use for CRT output
1066 * offset + 55: index of I2C CRTC pair to use for TV output
1067 * offset + 56: index of I2C CRTC pair to use for flat panel output
1068 * offset + 58: write CRTC index for I2C pair 0
1069 * offset + 59: read CRTC index for I2C pair 0
1070 * offset + 60: write CRTC index for I2C pair 1
1071 * offset + 61: read CRTC index for I2C pair 1
1072 *
1073 * offset + 67: maximum internal PLL frequency (single stage PLL)
1074 * offset + 71: minimum internal PLL frequency (single stage PLL)
1075 *
1076 * offset + 75: script table pointers, as described in
1077 * parse_script_table_pointers
1078 *
1079 * offset + 89: TMDS single link output A table pointer
1080 * offset + 91: TMDS single link output B table pointer
1081 * offset + 95: LVDS single link output A table pointer
1082 * offset + 105: flat panel timings table pointer
1083 * offset + 107: flat panel strapping translation table pointer
1084 * offset + 117: LVDS manufacturer panel config table pointer
1085 * offset + 119: LVDS manufacturer strapping translation table pointer
1086 *
1087 * offset + 142: PLL limits table pointer
1088 *
1089 * offset + 156: minimum pixel clock for LVDS dual link
1090 */
1091
1092 struct nouveau_drm *drm = nouveau_drm(dev);
1093 uint8_t *bmp = &bios->data[offset], bmp_version_major, bmp_version_minor;
1094 uint16_t bmplength;
1095 uint16_t legacy_scripts_offset, legacy_i2c_offset;
1096
1097 /* load needed defaults in case we can't parse this info */
1098 bios->digital_min_front_porch = 0x4b;
1099 bios->fmaxvco = 256000;
1100 bios->fminvco = 128000;
1101 bios->fp.duallink_transition_clk = 90000;
1102
1103 bmp_version_major = bmp[5];
1104 bmp_version_minor = bmp[6];
1105
1106 NV_INFO(drm, "BMP version %d.%d\n",
1107 bmp_version_major, bmp_version_minor);
1108
1109 /*
1110 * Make sure that 0x36 is blank and can't be mistaken for a DCB
1111 * pointer on early versions
1112 */
1113 if (bmp_version_major < 5)
1114 *(uint16_t *)&bios->data[0x36] = 0;
1115
1116 /*
1117 * Seems that the minor version was 1 for all major versions prior
1118 * to 5. Version 6 could theoretically exist, but I suspect BIT
1119 * happened instead.
1120 */
1121 if ((bmp_version_major < 5 && bmp_version_minor != 1) || bmp_version_major > 5) {
1122 NV_ERROR(drm, "You have an unsupported BMP version. "
1123 "Please send in your bios\n");
1124 return -ENOSYS;
1125 }
1126
1127 if (bmp_version_major == 0)
1128 /* nothing that's currently useful in this version */
1129 return 0;
1130 else if (bmp_version_major == 1)
1131 bmplength = 44; /* exact for 1.01 */
1132 else if (bmp_version_major == 2)
1133 bmplength = 48; /* exact for 2.01 */
1134 else if (bmp_version_major == 3)
1135 bmplength = 54;
1136 /* guessed - mem init tables added in this version */
1137 else if (bmp_version_major == 4 || bmp_version_minor < 0x1)
1138 /* don't know if 5.0 exists... */
1139 bmplength = 62;
1140 /* guessed - BMP I2C indices added in version 4*/
1141 else if (bmp_version_minor < 0x6)
1142 bmplength = 67; /* exact for 5.01 */
1143 else if (bmp_version_minor < 0x10)
1144 bmplength = 75; /* exact for 5.06 */
1145 else if (bmp_version_minor == 0x10)
1146 bmplength = 89; /* exact for 5.10h */
1147 else if (bmp_version_minor < 0x14)
1148 bmplength = 118; /* exact for 5.11h */
1149 else if (bmp_version_minor < 0x24)
1150 /*
1151 * Not sure of version where pll limits came in;
1152 * certainly exist by 0x24 though.
1153 */
1154 /* length not exact: this is long enough to get lvds members */
1155 bmplength = 123;
1156 else if (bmp_version_minor < 0x27)
1157 /*
1158 * Length not exact: this is long enough to get pll limit
1159 * member
1160 */
1161 bmplength = 144;
1162 else
1163 /*
1164 * Length not exact: this is long enough to get dual link
1165 * transition clock.
1166 */
1167 bmplength = 158;
1168
1169 /* checksum */
1170 if (nv_cksum(bmp, 8)) {
1171 NV_ERROR(drm, "Bad BMP checksum\n");
1172 return -EINVAL;
1173 }
1174
1175 /*
1176 * Bit 4 seems to indicate either a mobile bios or a quadro card --
1177 * mobile behaviour consistent (nv11+), quadro only seen nv18gl-nv36gl
1178 * (not nv10gl), bit 5 that the flat panel tables are present, and
1179 * bit 6 a tv bios.
1180 */
1181 bios->feature_byte = bmp[9];
1182
1183 if (bmp_version_major < 5 || bmp_version_minor < 0x10)
1184 bios->old_style_init = true;
1185 legacy_scripts_offset = 18;
1186 if (bmp_version_major < 2)
1187 legacy_scripts_offset -= 4;
1188 bios->init_script_tbls_ptr = ROM16(bmp[legacy_scripts_offset]);
1189 bios->extra_init_script_tbl_ptr = ROM16(bmp[legacy_scripts_offset + 2]);
1190
1191 if (bmp_version_major > 2) { /* appears in BMP 3 */
1192 bios->legacy.mem_init_tbl_ptr = ROM16(bmp[24]);
1193 bios->legacy.sdr_seq_tbl_ptr = ROM16(bmp[26]);
1194 bios->legacy.ddr_seq_tbl_ptr = ROM16(bmp[28]);
1195 }
1196
1197 legacy_i2c_offset = 0x48; /* BMP version 2 & 3 */
1198 if (bmplength > 61)
1199 legacy_i2c_offset = offset + 54;
1200 bios->legacy.i2c_indices.crt = bios->data[legacy_i2c_offset];
1201 bios->legacy.i2c_indices.tv = bios->data[legacy_i2c_offset + 1];
1202 bios->legacy.i2c_indices.panel = bios->data[legacy_i2c_offset + 2];
1203
1204 if (bmplength > 74) {
1205 bios->fmaxvco = ROM32(bmp[67]);
1206 bios->fminvco = ROM32(bmp[71]);
1207 }
1208 if (bmplength > 88)
1209 parse_script_table_pointers(bios, offset + 75);
1210 if (bmplength > 94) {
1211 bios->tmds.output0_script_ptr = ROM16(bmp[89]);
1212 bios->tmds.output1_script_ptr = ROM16(bmp[91]);
1213 /*
1214 * Never observed in use with lvds scripts, but is reused for
1215 * 18/24 bit panel interface default for EDID equipped panels
1216 * (if_is_24bit not set directly to avoid any oscillation).
1217 */
1218 bios->legacy.lvds_single_a_script_ptr = ROM16(bmp[95]);
1219 }
1220 if (bmplength > 108) {
1221 bios->fp.fptablepointer = ROM16(bmp[105]);
1222 bios->fp.fpxlatetableptr = ROM16(bmp[107]);
1223 bios->fp.xlatwidth = 1;
1224 }
1225 if (bmplength > 120) {
1226 bios->fp.lvdsmanufacturerpointer = ROM16(bmp[117]);
1227 bios->fp.fpxlatemanufacturertableptr = ROM16(bmp[119]);
1228 }
1229 #if 0
1230 if (bmplength > 143)
1231 bios->pll_limit_tbl_ptr = ROM16(bmp[142]);
1232 #endif
1233
1234 if (bmplength > 157)
1235 bios->fp.duallink_transition_clk = ROM16(bmp[156]) * 10;
1236
1237 return 0;
1238 }
1239
findstr(uint8_t * data,int n,const uint8_t * str,int len)1240 static uint16_t findstr(uint8_t *data, int n, const uint8_t *str, int len)
1241 {
1242 int i, j;
1243
1244 for (i = 0; i <= (n - len); i++) {
1245 for (j = 0; j < len; j++)
1246 if (data[i + j] != str[j])
1247 break;
1248 if (j == len)
1249 return i;
1250 }
1251
1252 return 0;
1253 }
1254
1255 void *
olddcb_table(struct drm_device * dev)1256 olddcb_table(struct drm_device *dev)
1257 {
1258 struct nouveau_drm *drm = nouveau_drm(dev);
1259 u8 *dcb = NULL;
1260
1261 if (nv_device(drm->device)->card_type > NV_04)
1262 dcb = ROMPTR(dev, drm->vbios.data[0x36]);
1263 if (!dcb) {
1264 NV_WARN(drm, "No DCB data found in VBIOS\n");
1265 return NULL;
1266 }
1267
1268 if (dcb[0] >= 0x41) {
1269 NV_WARN(drm, "DCB version 0x%02x unknown\n", dcb[0]);
1270 return NULL;
1271 } else
1272 if (dcb[0] >= 0x30) {
1273 if (ROM32(dcb[6]) == 0x4edcbdcb)
1274 return dcb;
1275 } else
1276 if (dcb[0] >= 0x20) {
1277 if (ROM32(dcb[4]) == 0x4edcbdcb)
1278 return dcb;
1279 } else
1280 if (dcb[0] >= 0x15) {
1281 if (!memcmp(&dcb[-7], "DEV_REC", 7))
1282 return dcb;
1283 } else {
1284 /*
1285 * v1.4 (some NV15/16, NV11+) seems the same as v1.5, but
1286 * always has the same single (crt) entry, even when tv-out
1287 * present, so the conclusion is this version cannot really
1288 * be used.
1289 *
1290 * v1.2 tables (some NV6/10, and NV15+) normally have the
1291 * same 5 entries, which are not specific to the card and so
1292 * no use.
1293 *
1294 * v1.2 does have an I2C table that read_dcb_i2c_table can
1295 * handle, but cards exist (nv11 in #14821) with a bad i2c
1296 * table pointer, so use the indices parsed in
1297 * parse_bmp_structure.
1298 *
1299 * v1.1 (NV5+, maybe some NV4) is entirely unhelpful
1300 */
1301 NV_WARN(drm, "No useful DCB data in VBIOS\n");
1302 return NULL;
1303 }
1304
1305 NV_WARN(drm, "DCB header validation failed\n");
1306 return NULL;
1307 }
1308
1309 void *
olddcb_outp(struct drm_device * dev,u8 idx)1310 olddcb_outp(struct drm_device *dev, u8 idx)
1311 {
1312 u8 *dcb = olddcb_table(dev);
1313 if (dcb && dcb[0] >= 0x30) {
1314 if (idx < dcb[2])
1315 return dcb + dcb[1] + (idx * dcb[3]);
1316 } else
1317 if (dcb && dcb[0] >= 0x20) {
1318 u8 *i2c = ROMPTR(dev, dcb[2]);
1319 u8 *ent = dcb + 8 + (idx * 8);
1320 if (i2c && ent < i2c)
1321 return ent;
1322 } else
1323 if (dcb && dcb[0] >= 0x15) {
1324 u8 *i2c = ROMPTR(dev, dcb[2]);
1325 u8 *ent = dcb + 4 + (idx * 10);
1326 if (i2c && ent < i2c)
1327 return ent;
1328 }
1329
1330 return NULL;
1331 }
1332
1333 int
olddcb_outp_foreach(struct drm_device * dev,void * data,int (* exec)(struct drm_device *,void *,int idx,u8 * outp))1334 olddcb_outp_foreach(struct drm_device *dev, void *data,
1335 int (*exec)(struct drm_device *, void *, int idx, u8 *outp))
1336 {
1337 int ret, idx = -1;
1338 u8 *outp = NULL;
1339 while ((outp = olddcb_outp(dev, ++idx))) {
1340 if (ROM32(outp[0]) == 0x00000000)
1341 break; /* seen on an NV11 with DCB v1.5 */
1342 if (ROM32(outp[0]) == 0xffffffff)
1343 break; /* seen on an NV17 with DCB v2.0 */
1344
1345 if ((outp[0] & 0x0f) == DCB_OUTPUT_UNUSED)
1346 continue;
1347 if ((outp[0] & 0x0f) == DCB_OUTPUT_EOL)
1348 break;
1349
1350 ret = exec(dev, data, idx, outp);
1351 if (ret)
1352 return ret;
1353 }
1354
1355 return 0;
1356 }
1357
1358 u8 *
olddcb_conntab(struct drm_device * dev)1359 olddcb_conntab(struct drm_device *dev)
1360 {
1361 u8 *dcb = olddcb_table(dev);
1362 if (dcb && dcb[0] >= 0x30 && dcb[1] >= 0x16) {
1363 u8 *conntab = ROMPTR(dev, dcb[0x14]);
1364 if (conntab && conntab[0] >= 0x30 && conntab[0] <= 0x40)
1365 return conntab;
1366 }
1367 return NULL;
1368 }
1369
1370 u8 *
olddcb_conn(struct drm_device * dev,u8 idx)1371 olddcb_conn(struct drm_device *dev, u8 idx)
1372 {
1373 u8 *conntab = olddcb_conntab(dev);
1374 if (conntab && idx < conntab[2])
1375 return conntab + conntab[1] + (idx * conntab[3]);
1376 return NULL;
1377 }
1378
new_dcb_entry(struct dcb_table * dcb)1379 static struct dcb_output *new_dcb_entry(struct dcb_table *dcb)
1380 {
1381 struct dcb_output *entry = &dcb->entry[dcb->entries];
1382
1383 memset(entry, 0, sizeof(struct dcb_output));
1384 entry->index = dcb->entries++;
1385
1386 return entry;
1387 }
1388
fabricate_dcb_output(struct dcb_table * dcb,int type,int i2c,int heads,int or)1389 static void fabricate_dcb_output(struct dcb_table *dcb, int type, int i2c,
1390 int heads, int or)
1391 {
1392 struct dcb_output *entry = new_dcb_entry(dcb);
1393
1394 entry->type = type;
1395 entry->i2c_index = i2c;
1396 entry->heads = heads;
1397 if (type != DCB_OUTPUT_ANALOG)
1398 entry->location = !DCB_LOC_ON_CHIP; /* ie OFF CHIP */
1399 entry->or = or;
1400 }
1401
1402 static bool
parse_dcb20_entry(struct drm_device * dev,struct dcb_table * dcb,uint32_t conn,uint32_t conf,struct dcb_output * entry)1403 parse_dcb20_entry(struct drm_device *dev, struct dcb_table *dcb,
1404 uint32_t conn, uint32_t conf, struct dcb_output *entry)
1405 {
1406 struct nouveau_drm *drm = nouveau_drm(dev);
1407
1408 entry->type = conn & 0xf;
1409 entry->i2c_index = (conn >> 4) & 0xf;
1410 entry->heads = (conn >> 8) & 0xf;
1411 entry->connector = (conn >> 12) & 0xf;
1412 entry->bus = (conn >> 16) & 0xf;
1413 entry->location = (conn >> 20) & 0x3;
1414 entry->or = (conn >> 24) & 0xf;
1415
1416 switch (entry->type) {
1417 case DCB_OUTPUT_ANALOG:
1418 /*
1419 * Although the rest of a CRT conf dword is usually
1420 * zeros, mac biosen have stuff there so we must mask
1421 */
1422 entry->crtconf.maxfreq = (dcb->version < 0x30) ?
1423 (conf & 0xffff) * 10 :
1424 (conf & 0xff) * 10000;
1425 break;
1426 case DCB_OUTPUT_LVDS:
1427 {
1428 uint32_t mask;
1429 if (conf & 0x1)
1430 entry->lvdsconf.use_straps_for_mode = true;
1431 if (dcb->version < 0x22) {
1432 mask = ~0xd;
1433 /*
1434 * The laptop in bug 14567 lies and claims to not use
1435 * straps when it does, so assume all DCB 2.0 laptops
1436 * use straps, until a broken EDID using one is produced
1437 */
1438 entry->lvdsconf.use_straps_for_mode = true;
1439 /*
1440 * Both 0x4 and 0x8 show up in v2.0 tables; assume they
1441 * mean the same thing (probably wrong, but might work)
1442 */
1443 if (conf & 0x4 || conf & 0x8)
1444 entry->lvdsconf.use_power_scripts = true;
1445 } else {
1446 mask = ~0x7;
1447 if (conf & 0x2)
1448 entry->lvdsconf.use_acpi_for_edid = true;
1449 if (conf & 0x4)
1450 entry->lvdsconf.use_power_scripts = true;
1451 entry->lvdsconf.sor.link = (conf & 0x00000030) >> 4;
1452 }
1453 if (conf & mask) {
1454 /*
1455 * Until we even try to use these on G8x, it's
1456 * useless reporting unknown bits. They all are.
1457 */
1458 if (dcb->version >= 0x40)
1459 break;
1460
1461 NV_ERROR(drm, "Unknown LVDS configuration bits, "
1462 "please report\n");
1463 }
1464 break;
1465 }
1466 case DCB_OUTPUT_TV:
1467 {
1468 if (dcb->version >= 0x30)
1469 entry->tvconf.has_component_output = conf & (0x8 << 4);
1470 else
1471 entry->tvconf.has_component_output = false;
1472
1473 break;
1474 }
1475 case DCB_OUTPUT_DP:
1476 entry->dpconf.sor.link = (conf & 0x00000030) >> 4;
1477 entry->extdev = (conf & 0x0000ff00) >> 8;
1478 switch ((conf & 0x00e00000) >> 21) {
1479 case 0:
1480 entry->dpconf.link_bw = 162000;
1481 break;
1482 case 1:
1483 entry->dpconf.link_bw = 270000;
1484 break;
1485 default:
1486 entry->dpconf.link_bw = 540000;
1487 break;
1488 }
1489 switch ((conf & 0x0f000000) >> 24) {
1490 case 0xf:
1491 entry->dpconf.link_nr = 4;
1492 break;
1493 case 0x3:
1494 entry->dpconf.link_nr = 2;
1495 break;
1496 default:
1497 entry->dpconf.link_nr = 1;
1498 break;
1499 }
1500 break;
1501 case DCB_OUTPUT_TMDS:
1502 if (dcb->version >= 0x40) {
1503 entry->tmdsconf.sor.link = (conf & 0x00000030) >> 4;
1504 entry->extdev = (conf & 0x0000ff00) >> 8;
1505 }
1506 else if (dcb->version >= 0x30)
1507 entry->tmdsconf.slave_addr = (conf & 0x00000700) >> 8;
1508 else if (dcb->version >= 0x22)
1509 entry->tmdsconf.slave_addr = (conf & 0x00000070) >> 4;
1510
1511 break;
1512 case DCB_OUTPUT_EOL:
1513 /* weird g80 mobile type that "nv" treats as a terminator */
1514 dcb->entries--;
1515 return false;
1516 default:
1517 break;
1518 }
1519
1520 if (dcb->version < 0x40) {
1521 /* Normal entries consist of a single bit, but dual link has
1522 * the next most significant bit set too
1523 */
1524 entry->duallink_possible =
1525 ((1 << (ffs(entry->or) - 1)) * 3 == entry->or);
1526 } else {
1527 entry->duallink_possible = (entry->sorconf.link == 3);
1528 }
1529
1530 /* unsure what DCB version introduces this, 3.0? */
1531 if (conf & 0x100000)
1532 entry->i2c_upper_default = true;
1533
1534 return true;
1535 }
1536
1537 static bool
parse_dcb15_entry(struct drm_device * dev,struct dcb_table * dcb,uint32_t conn,uint32_t conf,struct dcb_output * entry)1538 parse_dcb15_entry(struct drm_device *dev, struct dcb_table *dcb,
1539 uint32_t conn, uint32_t conf, struct dcb_output *entry)
1540 {
1541 struct nouveau_drm *drm = nouveau_drm(dev);
1542
1543 switch (conn & 0x0000000f) {
1544 case 0:
1545 entry->type = DCB_OUTPUT_ANALOG;
1546 break;
1547 case 1:
1548 entry->type = DCB_OUTPUT_TV;
1549 break;
1550 case 2:
1551 case 4:
1552 if (conn & 0x10)
1553 entry->type = DCB_OUTPUT_LVDS;
1554 else
1555 entry->type = DCB_OUTPUT_TMDS;
1556 break;
1557 case 3:
1558 entry->type = DCB_OUTPUT_LVDS;
1559 break;
1560 default:
1561 NV_ERROR(drm, "Unknown DCB type %d\n", conn & 0x0000000f);
1562 return false;
1563 }
1564
1565 entry->i2c_index = (conn & 0x0003c000) >> 14;
1566 entry->heads = ((conn & 0x001c0000) >> 18) + 1;
1567 entry->or = entry->heads; /* same as heads, hopefully safe enough */
1568 entry->location = (conn & 0x01e00000) >> 21;
1569 entry->bus = (conn & 0x0e000000) >> 25;
1570 entry->duallink_possible = false;
1571
1572 switch (entry->type) {
1573 case DCB_OUTPUT_ANALOG:
1574 entry->crtconf.maxfreq = (conf & 0xffff) * 10;
1575 break;
1576 case DCB_OUTPUT_TV:
1577 entry->tvconf.has_component_output = false;
1578 break;
1579 case DCB_OUTPUT_LVDS:
1580 if ((conn & 0x00003f00) >> 8 != 0x10)
1581 entry->lvdsconf.use_straps_for_mode = true;
1582 entry->lvdsconf.use_power_scripts = true;
1583 break;
1584 default:
1585 break;
1586 }
1587
1588 return true;
1589 }
1590
1591 static
merge_like_dcb_entries(struct drm_device * dev,struct dcb_table * dcb)1592 void merge_like_dcb_entries(struct drm_device *dev, struct dcb_table *dcb)
1593 {
1594 /*
1595 * DCB v2.0 lists each output combination separately.
1596 * Here we merge compatible entries to have fewer outputs, with
1597 * more options
1598 */
1599
1600 struct nouveau_drm *drm = nouveau_drm(dev);
1601 int i, newentries = 0;
1602
1603 for (i = 0; i < dcb->entries; i++) {
1604 struct dcb_output *ient = &dcb->entry[i];
1605 int j;
1606
1607 for (j = i + 1; j < dcb->entries; j++) {
1608 struct dcb_output *jent = &dcb->entry[j];
1609
1610 if (jent->type == DCB_OUTPUT_MERGED)
1611 continue;
1612
1613 /* merge heads field when all other fields the same */
1614 if (jent->i2c_index == ient->i2c_index &&
1615 jent->type == ient->type &&
1616 jent->location == ient->location &&
1617 jent->or == ient->or) {
1618 NV_INFO(drm, "Merging DCB entries %d and %d\n",
1619 i, j);
1620 ient->heads |= jent->heads;
1621 jent->type = DCB_OUTPUT_MERGED;
1622 }
1623 }
1624 }
1625
1626 /* Compact entries merged into others out of dcb */
1627 for (i = 0; i < dcb->entries; i++) {
1628 if (dcb->entry[i].type == DCB_OUTPUT_MERGED)
1629 continue;
1630
1631 if (newentries != i) {
1632 dcb->entry[newentries] = dcb->entry[i];
1633 dcb->entry[newentries].index = newentries;
1634 }
1635 newentries++;
1636 }
1637
1638 dcb->entries = newentries;
1639 }
1640
1641 static bool
apply_dcb_encoder_quirks(struct drm_device * dev,int idx,u32 * conn,u32 * conf)1642 apply_dcb_encoder_quirks(struct drm_device *dev, int idx, u32 *conn, u32 *conf)
1643 {
1644 struct nouveau_drm *drm = nouveau_drm(dev);
1645 struct dcb_table *dcb = &drm->vbios.dcb;
1646
1647 /* Dell Precision M6300
1648 * DCB entry 2: 02025312 00000010
1649 * DCB entry 3: 02026312 00000020
1650 *
1651 * Identical, except apparently a different connector on a
1652 * different SOR link. Not a clue how we're supposed to know
1653 * which one is in use if it even shares an i2c line...
1654 *
1655 * Ignore the connector on the second SOR link to prevent
1656 * nasty problems until this is sorted (assuming it's not a
1657 * VBIOS bug).
1658 */
1659 if (nv_match_device(dev, 0x040d, 0x1028, 0x019b)) {
1660 if (*conn == 0x02026312 && *conf == 0x00000020)
1661 return false;
1662 }
1663
1664 /* GeForce3 Ti 200
1665 *
1666 * DCB reports an LVDS output that should be TMDS:
1667 * DCB entry 1: f2005014 ffffffff
1668 */
1669 if (nv_match_device(dev, 0x0201, 0x1462, 0x8851)) {
1670 if (*conn == 0xf2005014 && *conf == 0xffffffff) {
1671 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 1, 1, 1);
1672 return false;
1673 }
1674 }
1675
1676 /* XFX GT-240X-YA
1677 *
1678 * So many things wrong here, replace the entire encoder table..
1679 */
1680 if (nv_match_device(dev, 0x0ca3, 0x1682, 0x3003)) {
1681 if (idx == 0) {
1682 *conn = 0x02001300; /* VGA, connector 1 */
1683 *conf = 0x00000028;
1684 } else
1685 if (idx == 1) {
1686 *conn = 0x01010312; /* DVI, connector 0 */
1687 *conf = 0x00020030;
1688 } else
1689 if (idx == 2) {
1690 *conn = 0x01010310; /* VGA, connector 0 */
1691 *conf = 0x00000028;
1692 } else
1693 if (idx == 3) {
1694 *conn = 0x02022362; /* HDMI, connector 2 */
1695 *conf = 0x00020010;
1696 } else {
1697 *conn = 0x0000000e; /* EOL */
1698 *conf = 0x00000000;
1699 }
1700 }
1701
1702 /* Some other twisted XFX board (rhbz#694914)
1703 *
1704 * The DVI/VGA encoder combo that's supposed to represent the
1705 * DVI-I connector actually point at two different ones, and
1706 * the HDMI connector ends up paired with the VGA instead.
1707 *
1708 * Connector table is missing anything for VGA at all, pointing it
1709 * an invalid conntab entry 2 so we figure it out ourself.
1710 */
1711 if (nv_match_device(dev, 0x0615, 0x1682, 0x2605)) {
1712 if (idx == 0) {
1713 *conn = 0x02002300; /* VGA, connector 2 */
1714 *conf = 0x00000028;
1715 } else
1716 if (idx == 1) {
1717 *conn = 0x01010312; /* DVI, connector 0 */
1718 *conf = 0x00020030;
1719 } else
1720 if (idx == 2) {
1721 *conn = 0x04020310; /* VGA, connector 0 */
1722 *conf = 0x00000028;
1723 } else
1724 if (idx == 3) {
1725 *conn = 0x02021322; /* HDMI, connector 1 */
1726 *conf = 0x00020010;
1727 } else {
1728 *conn = 0x0000000e; /* EOL */
1729 *conf = 0x00000000;
1730 }
1731 }
1732
1733 /* fdo#50830: connector indices for VGA and DVI-I are backwards */
1734 if (nv_match_device(dev, 0x0421, 0x3842, 0xc793)) {
1735 if (idx == 0 && *conn == 0x02000300)
1736 *conn = 0x02011300;
1737 else
1738 if (idx == 1 && *conn == 0x04011310)
1739 *conn = 0x04000310;
1740 else
1741 if (idx == 2 && *conn == 0x02011312)
1742 *conn = 0x02000312;
1743 }
1744
1745 return true;
1746 }
1747
1748 static void
fabricate_dcb_encoder_table(struct drm_device * dev,struct nvbios * bios)1749 fabricate_dcb_encoder_table(struct drm_device *dev, struct nvbios *bios)
1750 {
1751 struct dcb_table *dcb = &bios->dcb;
1752 int all_heads = (nv_two_heads(dev) ? 3 : 1);
1753
1754 #ifdef __powerpc__
1755 /* Apple iMac G4 NV17 */
1756 if (of_machine_is_compatible("PowerMac4,5")) {
1757 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 0, all_heads, 1);
1758 fabricate_dcb_output(dcb, DCB_OUTPUT_ANALOG, 1, all_heads, 2);
1759 return;
1760 }
1761 #endif
1762
1763 /* Make up some sane defaults */
1764 fabricate_dcb_output(dcb, DCB_OUTPUT_ANALOG,
1765 bios->legacy.i2c_indices.crt, 1, 1);
1766
1767 if (nv04_tv_identify(dev, bios->legacy.i2c_indices.tv) >= 0)
1768 fabricate_dcb_output(dcb, DCB_OUTPUT_TV,
1769 bios->legacy.i2c_indices.tv,
1770 all_heads, 0);
1771
1772 else if (bios->tmds.output0_script_ptr ||
1773 bios->tmds.output1_script_ptr)
1774 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS,
1775 bios->legacy.i2c_indices.panel,
1776 all_heads, 1);
1777 }
1778
1779 static int
parse_dcb_entry(struct drm_device * dev,void * data,int idx,u8 * outp)1780 parse_dcb_entry(struct drm_device *dev, void *data, int idx, u8 *outp)
1781 {
1782 struct nouveau_drm *drm = nouveau_drm(dev);
1783 struct dcb_table *dcb = &drm->vbios.dcb;
1784 u32 conf = (dcb->version >= 0x20) ? ROM32(outp[4]) : ROM32(outp[6]);
1785 u32 conn = ROM32(outp[0]);
1786 bool ret;
1787
1788 if (apply_dcb_encoder_quirks(dev, idx, &conn, &conf)) {
1789 struct dcb_output *entry = new_dcb_entry(dcb);
1790
1791 NV_INFO(drm, "DCB outp %02d: %08x %08x\n", idx, conn, conf);
1792
1793 if (dcb->version >= 0x20)
1794 ret = parse_dcb20_entry(dev, dcb, conn, conf, entry);
1795 else
1796 ret = parse_dcb15_entry(dev, dcb, conn, conf, entry);
1797 if (!ret)
1798 return 1; /* stop parsing */
1799
1800 /* Ignore the I2C index for on-chip TV-out, as there
1801 * are cards with bogus values (nv31m in bug 23212),
1802 * and it's otherwise useless.
1803 */
1804 if (entry->type == DCB_OUTPUT_TV &&
1805 entry->location == DCB_LOC_ON_CHIP)
1806 entry->i2c_index = 0x0f;
1807 }
1808
1809 return 0;
1810 }
1811
1812 static void
dcb_fake_connectors(struct nvbios * bios)1813 dcb_fake_connectors(struct nvbios *bios)
1814 {
1815 struct dcb_table *dcbt = &bios->dcb;
1816 u8 map[16] = { };
1817 int i, idx = 0;
1818
1819 /* heuristic: if we ever get a non-zero connector field, assume
1820 * that all the indices are valid and we don't need fake them.
1821 *
1822 * and, as usual, a blacklist of boards with bad bios data..
1823 */
1824 if (!nv_match_device(bios->dev, 0x0392, 0x107d, 0x20a2)) {
1825 for (i = 0; i < dcbt->entries; i++) {
1826 if (dcbt->entry[i].connector)
1827 return;
1828 }
1829 }
1830
1831 /* no useful connector info available, we need to make it up
1832 * ourselves. the rule here is: anything on the same i2c bus
1833 * is considered to be on the same connector. any output
1834 * without an associated i2c bus is assigned its own unique
1835 * connector index.
1836 */
1837 for (i = 0; i < dcbt->entries; i++) {
1838 u8 i2c = dcbt->entry[i].i2c_index;
1839 if (i2c == 0x0f) {
1840 dcbt->entry[i].connector = idx++;
1841 } else {
1842 if (!map[i2c])
1843 map[i2c] = ++idx;
1844 dcbt->entry[i].connector = map[i2c] - 1;
1845 }
1846 }
1847
1848 /* if we created more than one connector, destroy the connector
1849 * table - just in case it has random, rather than stub, entries.
1850 */
1851 if (i > 1) {
1852 u8 *conntab = olddcb_conntab(bios->dev);
1853 if (conntab)
1854 conntab[0] = 0x00;
1855 }
1856 }
1857
1858 static int
parse_dcb_table(struct drm_device * dev,struct nvbios * bios)1859 parse_dcb_table(struct drm_device *dev, struct nvbios *bios)
1860 {
1861 struct nouveau_drm *drm = nouveau_drm(dev);
1862 struct dcb_table *dcb = &bios->dcb;
1863 u8 *dcbt, *conn;
1864 int idx;
1865
1866 dcbt = olddcb_table(dev);
1867 if (!dcbt) {
1868 /* handle pre-DCB boards */
1869 if (bios->type == NVBIOS_BMP) {
1870 fabricate_dcb_encoder_table(dev, bios);
1871 return 0;
1872 }
1873
1874 return -EINVAL;
1875 }
1876
1877 NV_INFO(drm, "DCB version %d.%d\n", dcbt[0] >> 4, dcbt[0] & 0xf);
1878
1879 dcb->version = dcbt[0];
1880 olddcb_outp_foreach(dev, NULL, parse_dcb_entry);
1881
1882 /*
1883 * apart for v2.1+ not being known for requiring merging, this
1884 * guarantees dcbent->index is the index of the entry in the rom image
1885 */
1886 if (dcb->version < 0x21)
1887 merge_like_dcb_entries(dev, dcb);
1888
1889 /* dump connector table entries to log, if any exist */
1890 idx = -1;
1891 while ((conn = olddcb_conn(dev, ++idx))) {
1892 if (conn[0] != 0xff) {
1893 NV_INFO(drm, "DCB conn %02d: ", idx);
1894 if (olddcb_conntab(dev)[3] < 4)
1895 pr_cont("%04x\n", ROM16(conn[0]));
1896 else
1897 pr_cont("%08x\n", ROM32(conn[0]));
1898 }
1899 }
1900 dcb_fake_connectors(bios);
1901 return 0;
1902 }
1903
load_nv17_hwsq_ucode_entry(struct drm_device * dev,struct nvbios * bios,uint16_t hwsq_offset,int entry)1904 static int load_nv17_hwsq_ucode_entry(struct drm_device *dev, struct nvbios *bios, uint16_t hwsq_offset, int entry)
1905 {
1906 /*
1907 * The header following the "HWSQ" signature has the number of entries,
1908 * and the entry size
1909 *
1910 * An entry consists of a dword to write to the sequencer control reg
1911 * (0x00001304), followed by the ucode bytes, written sequentially,
1912 * starting at reg 0x00001400
1913 */
1914
1915 struct nouveau_drm *drm = nouveau_drm(dev);
1916 struct nouveau_device *device = nv_device(drm->device);
1917 uint8_t bytes_to_write;
1918 uint16_t hwsq_entry_offset;
1919 int i;
1920
1921 if (bios->data[hwsq_offset] <= entry) {
1922 NV_ERROR(drm, "Too few entries in HW sequencer table for "
1923 "requested entry\n");
1924 return -ENOENT;
1925 }
1926
1927 bytes_to_write = bios->data[hwsq_offset + 1];
1928
1929 if (bytes_to_write != 36) {
1930 NV_ERROR(drm, "Unknown HW sequencer entry size\n");
1931 return -EINVAL;
1932 }
1933
1934 NV_INFO(drm, "Loading NV17 power sequencing microcode\n");
1935
1936 hwsq_entry_offset = hwsq_offset + 2 + entry * bytes_to_write;
1937
1938 /* set sequencer control */
1939 nv_wr32(device, 0x00001304, ROM32(bios->data[hwsq_entry_offset]));
1940 bytes_to_write -= 4;
1941
1942 /* write ucode */
1943 for (i = 0; i < bytes_to_write; i += 4)
1944 nv_wr32(device, 0x00001400 + i, ROM32(bios->data[hwsq_entry_offset + i + 4]));
1945
1946 /* twiddle NV_PBUS_DEBUG_4 */
1947 nv_wr32(device, NV_PBUS_DEBUG_4, nv_rd32(device, NV_PBUS_DEBUG_4) | 0x18);
1948
1949 return 0;
1950 }
1951
load_nv17_hw_sequencer_ucode(struct drm_device * dev,struct nvbios * bios)1952 static int load_nv17_hw_sequencer_ucode(struct drm_device *dev,
1953 struct nvbios *bios)
1954 {
1955 /*
1956 * BMP based cards, from NV17, need a microcode loading to correctly
1957 * control the GPIO etc for LVDS panels
1958 *
1959 * BIT based cards seem to do this directly in the init scripts
1960 *
1961 * The microcode entries are found by the "HWSQ" signature.
1962 */
1963
1964 const uint8_t hwsq_signature[] = { 'H', 'W', 'S', 'Q' };
1965 const int sz = sizeof(hwsq_signature);
1966 int hwsq_offset;
1967
1968 hwsq_offset = findstr(bios->data, bios->length, hwsq_signature, sz);
1969 if (!hwsq_offset)
1970 return 0;
1971
1972 /* always use entry 0? */
1973 return load_nv17_hwsq_ucode_entry(dev, bios, hwsq_offset + sz, 0);
1974 }
1975
nouveau_bios_embedded_edid(struct drm_device * dev)1976 uint8_t *nouveau_bios_embedded_edid(struct drm_device *dev)
1977 {
1978 struct nouveau_drm *drm = nouveau_drm(dev);
1979 struct nvbios *bios = &drm->vbios;
1980 const uint8_t edid_sig[] = {
1981 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 };
1982 uint16_t offset = 0;
1983 uint16_t newoffset;
1984 int searchlen = NV_PROM_SIZE;
1985
1986 if (bios->fp.edid)
1987 return bios->fp.edid;
1988
1989 while (searchlen) {
1990 newoffset = findstr(&bios->data[offset], searchlen,
1991 edid_sig, 8);
1992 if (!newoffset)
1993 return NULL;
1994 offset += newoffset;
1995 if (!nv_cksum(&bios->data[offset], EDID1_LEN))
1996 break;
1997
1998 searchlen -= offset;
1999 offset++;
2000 }
2001
2002 NV_INFO(drm, "Found EDID in BIOS\n");
2003
2004 return bios->fp.edid = &bios->data[offset];
2005 }
2006
NVInitVBIOS(struct drm_device * dev)2007 static bool NVInitVBIOS(struct drm_device *dev)
2008 {
2009 struct nouveau_drm *drm = nouveau_drm(dev);
2010 struct nouveau_bios *bios = nouveau_bios(drm->device);
2011 struct nvbios *legacy = &drm->vbios;
2012
2013 memset(legacy, 0, sizeof(struct nvbios));
2014 spin_lock_init(&legacy->lock);
2015 legacy->dev = dev;
2016
2017 legacy->data = bios->data;
2018 legacy->length = bios->size;
2019 legacy->major_version = bios->version.major;
2020 legacy->chip_version = bios->version.chip;
2021 if (bios->bit_offset) {
2022 legacy->type = NVBIOS_BIT;
2023 legacy->offset = bios->bit_offset;
2024 return !parse_bit_structure(legacy, legacy->offset + 6);
2025 } else
2026 if (bios->bmp_offset) {
2027 legacy->type = NVBIOS_BMP;
2028 legacy->offset = bios->bmp_offset;
2029 return !parse_bmp_structure(dev, legacy, legacy->offset);
2030 }
2031
2032 return false;
2033 }
2034
2035 int
nouveau_run_vbios_init(struct drm_device * dev)2036 nouveau_run_vbios_init(struct drm_device *dev)
2037 {
2038 struct nouveau_drm *drm = nouveau_drm(dev);
2039 struct nvbios *bios = &drm->vbios;
2040 int ret = 0;
2041
2042 /* Reset the BIOS head to 0. */
2043 bios->state.crtchead = 0;
2044
2045 if (bios->major_version < 5) /* BMP only */
2046 load_nv17_hw_sequencer_ucode(dev, bios);
2047
2048 if (bios->execute) {
2049 bios->fp.last_script_invoc = 0;
2050 bios->fp.lvds_init_run = false;
2051 }
2052
2053 return ret;
2054 }
2055
2056 static bool
nouveau_bios_posted(struct drm_device * dev)2057 nouveau_bios_posted(struct drm_device *dev)
2058 {
2059 struct nouveau_drm *drm = nouveau_drm(dev);
2060 unsigned htotal;
2061
2062 if (nv_device(drm->device)->card_type >= NV_50)
2063 return true;
2064
2065 htotal = NVReadVgaCrtc(dev, 0, 0x06);
2066 htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x01) << 8;
2067 htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x20) << 4;
2068 htotal |= (NVReadVgaCrtc(dev, 0, 0x25) & 0x01) << 10;
2069 htotal |= (NVReadVgaCrtc(dev, 0, 0x41) & 0x01) << 11;
2070 return (htotal != 0);
2071 }
2072
2073 int
nouveau_bios_init(struct drm_device * dev)2074 nouveau_bios_init(struct drm_device *dev)
2075 {
2076 struct nouveau_drm *drm = nouveau_drm(dev);
2077 struct nvbios *bios = &drm->vbios;
2078 int ret;
2079
2080 /* only relevant for PCI devices */
2081 if (!dev->pdev)
2082 return 0;
2083
2084 if (!NVInitVBIOS(dev))
2085 return -ENODEV;
2086
2087 ret = parse_dcb_table(dev, bios);
2088 if (ret)
2089 return ret;
2090
2091 if (!bios->major_version) /* we don't run version 0 bios */
2092 return 0;
2093
2094 /* init script execution disabled */
2095 bios->execute = false;
2096
2097 /* ... unless card isn't POSTed already */
2098 if (!nouveau_bios_posted(dev)) {
2099 NV_INFO(drm, "Adaptor not initialised, "
2100 "running VBIOS init tables.\n");
2101 bios->execute = true;
2102 }
2103
2104 ret = nouveau_run_vbios_init(dev);
2105 if (ret)
2106 return ret;
2107
2108 /* feature_byte on BMP is poor, but init always sets CR4B */
2109 if (bios->major_version < 5)
2110 bios->is_mobile = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_4B) & 0x40;
2111
2112 /* all BIT systems need p_f_m_t for digital_min_front_porch */
2113 if (bios->is_mobile || bios->major_version >= 5)
2114 ret = parse_fp_mode_table(dev, bios);
2115
2116 /* allow subsequent scripts to execute */
2117 bios->execute = true;
2118
2119 return 0;
2120 }
2121
2122 void
nouveau_bios_takedown(struct drm_device * dev)2123 nouveau_bios_takedown(struct drm_device *dev)
2124 {
2125 }
2126