1 /*
2 * Copyright 2005-2006 Erik Waling
3 * Copyright 2006 Stephane Marchesin
4 * Copyright 2007-2009 Stuart Bennett
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
21 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25 #include "nouveau_drv.h"
26 #include "nouveau_bios.h"
27 #include "nouveau_reg.h"
28 #include "dispnv04/hw.h"
29 #include "nouveau_encoder.h"
30
31 #include <linux/io-mapping.h>
32 #include <linux/firmware.h>
33
34 /* these defines are made up */
35 #define NV_CIO_CRE_44_HEADA 0x0
36 #define NV_CIO_CRE_44_HEADB 0x3
37 #define FEATURE_MOBILE 0x10 /* also FEATURE_QUADRO for BMP */
38
39 #define EDID1_LEN 128
40
41 #define BIOSLOG(sip, fmt, arg...) NV_DEBUG(sip->dev, fmt, ##arg)
42 #define LOG_OLD_VALUE(x)
43
44 struct init_exec {
45 bool execute;
46 bool repeat;
47 };
48
nv_cksum(const uint8_t * data,unsigned int length)49 static bool nv_cksum(const uint8_t *data, unsigned int length)
50 {
51 /*
52 * There's a few checksums in the BIOS, so here's a generic checking
53 * function.
54 */
55 int i;
56 uint8_t sum = 0;
57
58 for (i = 0; i < length; i++)
59 sum += data[i];
60
61 if (sum)
62 return true;
63
64 return false;
65 }
66
clkcmptable(struct nvbios * bios,uint16_t clktable,int pxclk)67 static uint16_t clkcmptable(struct nvbios *bios, uint16_t clktable, int pxclk)
68 {
69 int compare_record_len, i = 0;
70 uint16_t compareclk, scriptptr = 0;
71
72 if (bios->major_version < 5) /* pre BIT */
73 compare_record_len = 3;
74 else
75 compare_record_len = 4;
76
77 do {
78 compareclk = ROM16(bios->data[clktable + compare_record_len * i]);
79 if (pxclk >= compareclk * 10) {
80 if (bios->major_version < 5) {
81 uint8_t tmdssub = bios->data[clktable + 2 + compare_record_len * i];
82 scriptptr = ROM16(bios->data[bios->init_script_tbls_ptr + tmdssub * 2]);
83 } else
84 scriptptr = ROM16(bios->data[clktable + 2 + compare_record_len * i]);
85 break;
86 }
87 i++;
88 } while (compareclk);
89
90 return scriptptr;
91 }
92
93 static void
run_digital_op_script(struct drm_device * dev,uint16_t scriptptr,struct dcb_output * dcbent,int head,bool dl)94 run_digital_op_script(struct drm_device *dev, uint16_t scriptptr,
95 struct dcb_output *dcbent, int head, bool dl)
96 {
97 struct nouveau_drm *drm = nouveau_drm(dev);
98
99 NV_INFO(drm, "0x%04X: Parsing digital output script table\n",
100 scriptptr);
101 NVWriteVgaCrtc(dev, 0, NV_CIO_CRE_44, head ? NV_CIO_CRE_44_HEADB :
102 NV_CIO_CRE_44_HEADA);
103 nouveau_bios_run_init_table(dev, scriptptr, dcbent, head);
104
105 nv04_dfp_bind_head(dev, dcbent, head, dl);
106 }
107
call_lvds_manufacturer_script(struct drm_device * dev,struct dcb_output * dcbent,int head,enum LVDS_script script)108 static int call_lvds_manufacturer_script(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script)
109 {
110 struct nouveau_drm *drm = nouveau_drm(dev);
111 struct nvbios *bios = &drm->vbios;
112 uint8_t sub = bios->data[bios->fp.xlated_entry + script] + (bios->fp.link_c_increment && dcbent->or & DCB_OUTPUT_C ? 1 : 0);
113 uint16_t scriptofs = ROM16(bios->data[bios->init_script_tbls_ptr + sub * 2]);
114 #ifdef __powerpc__
115 struct pci_dev *pdev = to_pci_dev(dev->dev);
116 #endif
117
118 if (!bios->fp.xlated_entry || !sub || !scriptofs)
119 return -EINVAL;
120
121 run_digital_op_script(dev, scriptofs, dcbent, head, bios->fp.dual_link);
122
123 if (script == LVDS_PANEL_OFF) {
124 /* off-on delay in ms */
125 mdelay(ROM16(bios->data[bios->fp.xlated_entry + 7]));
126 }
127 #ifdef __powerpc__
128 /* Powerbook specific quirks */
129 if (script == LVDS_RESET &&
130 (pdev->device == 0x0179 || pdev->device == 0x0189 ||
131 pdev->device == 0x0329))
132 nv_write_tmds(dev, dcbent->or, 0, 0x02, 0x72);
133 #endif
134
135 return 0;
136 }
137
run_lvds_table(struct drm_device * dev,struct dcb_output * dcbent,int head,enum LVDS_script script,int pxclk)138 static int run_lvds_table(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script, int pxclk)
139 {
140 /*
141 * The BIT LVDS table's header has the information to setup the
142 * necessary registers. Following the standard 4 byte header are:
143 * A bitmask byte and a dual-link transition pxclk value for use in
144 * selecting the init script when not using straps; 4 script pointers
145 * for panel power, selected by output and on/off; and 8 table pointers
146 * for panel init, the needed one determined by output, and bits in the
147 * conf byte. These tables are similar to the TMDS tables, consisting
148 * of a list of pxclks and script pointers.
149 */
150 struct nouveau_drm *drm = nouveau_drm(dev);
151 struct nvbios *bios = &drm->vbios;
152 unsigned int outputset = (dcbent->or == 4) ? 1 : 0;
153 uint16_t scriptptr = 0, clktable;
154
155 /*
156 * For now we assume version 3.0 table - g80 support will need some
157 * changes
158 */
159
160 switch (script) {
161 case LVDS_INIT:
162 return -ENOSYS;
163 case LVDS_BACKLIGHT_ON:
164 case LVDS_PANEL_ON:
165 scriptptr = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 7 + outputset * 2]);
166 break;
167 case LVDS_BACKLIGHT_OFF:
168 case LVDS_PANEL_OFF:
169 scriptptr = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 11 + outputset * 2]);
170 break;
171 case LVDS_RESET:
172 clktable = bios->fp.lvdsmanufacturerpointer + 15;
173 if (dcbent->or == 4)
174 clktable += 8;
175
176 if (dcbent->lvdsconf.use_straps_for_mode) {
177 if (bios->fp.dual_link)
178 clktable += 4;
179 if (bios->fp.if_is_24bit)
180 clktable += 2;
181 } else {
182 /* using EDID */
183 int cmpval_24bit = (dcbent->or == 4) ? 4 : 1;
184
185 if (bios->fp.dual_link) {
186 clktable += 4;
187 cmpval_24bit <<= 1;
188 }
189
190 if (bios->fp.strapless_is_24bit & cmpval_24bit)
191 clktable += 2;
192 }
193
194 clktable = ROM16(bios->data[clktable]);
195 if (!clktable) {
196 NV_ERROR(drm, "Pixel clock comparison table not found\n");
197 return -ENOENT;
198 }
199 scriptptr = clkcmptable(bios, clktable, pxclk);
200 }
201
202 if (!scriptptr) {
203 NV_ERROR(drm, "LVDS output init script not found\n");
204 return -ENOENT;
205 }
206 run_digital_op_script(dev, scriptptr, dcbent, head, bios->fp.dual_link);
207
208 return 0;
209 }
210
call_lvds_script(struct drm_device * dev,struct dcb_output * dcbent,int head,enum LVDS_script script,int pxclk)211 int call_lvds_script(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script, int pxclk)
212 {
213 /*
214 * LVDS operations are multiplexed in an effort to present a single API
215 * which works with two vastly differing underlying structures.
216 * This acts as the demux
217 */
218
219 struct nouveau_drm *drm = nouveau_drm(dev);
220 struct nvif_object *device = &drm->client.device.object;
221 struct nvbios *bios = &drm->vbios;
222 uint8_t lvds_ver = bios->data[bios->fp.lvdsmanufacturerpointer];
223 uint32_t sel_clk_binding, sel_clk;
224 int ret;
225
226 if (bios->fp.last_script_invoc == (script << 1 | head) || !lvds_ver ||
227 (lvds_ver >= 0x30 && script == LVDS_INIT))
228 return 0;
229
230 if (!bios->fp.lvds_init_run) {
231 bios->fp.lvds_init_run = true;
232 call_lvds_script(dev, dcbent, head, LVDS_INIT, pxclk);
233 }
234
235 if (script == LVDS_PANEL_ON && bios->fp.reset_after_pclk_change)
236 call_lvds_script(dev, dcbent, head, LVDS_RESET, pxclk);
237 if (script == LVDS_RESET && bios->fp.power_off_for_reset)
238 call_lvds_script(dev, dcbent, head, LVDS_PANEL_OFF, pxclk);
239
240 NV_INFO(drm, "Calling LVDS script %d:\n", script);
241
242 /* don't let script change pll->head binding */
243 sel_clk_binding = nvif_rd32(device, NV_PRAMDAC_SEL_CLK) & 0x50000;
244
245 if (lvds_ver < 0x30)
246 ret = call_lvds_manufacturer_script(dev, dcbent, head, script);
247 else
248 ret = run_lvds_table(dev, dcbent, head, script, pxclk);
249
250 bios->fp.last_script_invoc = (script << 1 | head);
251
252 sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK) & ~0x50000;
253 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, sel_clk | sel_clk_binding);
254 /* some scripts set a value in NV_PBUS_POWERCTRL_2 and break video overlay */
255 nvif_wr32(device, NV_PBUS_POWERCTRL_2, 0);
256
257 return ret;
258 }
259
260 struct lvdstableheader {
261 uint8_t lvds_ver, headerlen, recordlen;
262 };
263
parse_lvds_manufacturer_table_header(struct drm_device * dev,struct nvbios * bios,struct lvdstableheader * lth)264 static int parse_lvds_manufacturer_table_header(struct drm_device *dev, struct nvbios *bios, struct lvdstableheader *lth)
265 {
266 /*
267 * BMP version (0xa) LVDS table has a simple header of version and
268 * record length. The BIT LVDS table has the typical BIT table header:
269 * version byte, header length byte, record length byte, and a byte for
270 * the maximum number of records that can be held in the table.
271 */
272
273 struct nouveau_drm *drm = nouveau_drm(dev);
274 uint8_t lvds_ver, headerlen, recordlen;
275
276 memset(lth, 0, sizeof(struct lvdstableheader));
277
278 if (bios->fp.lvdsmanufacturerpointer == 0x0) {
279 NV_ERROR(drm, "Pointer to LVDS manufacturer table invalid\n");
280 return -EINVAL;
281 }
282
283 lvds_ver = bios->data[bios->fp.lvdsmanufacturerpointer];
284
285 switch (lvds_ver) {
286 case 0x0a: /* pre NV40 */
287 headerlen = 2;
288 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1];
289 break;
290 case 0x30: /* NV4x */
291 headerlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1];
292 if (headerlen < 0x1f) {
293 NV_ERROR(drm, "LVDS table header not understood\n");
294 return -EINVAL;
295 }
296 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 2];
297 break;
298 case 0x40: /* G80/G90 */
299 headerlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1];
300 if (headerlen < 0x7) {
301 NV_ERROR(drm, "LVDS table header not understood\n");
302 return -EINVAL;
303 }
304 recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 2];
305 break;
306 default:
307 NV_ERROR(drm,
308 "LVDS table revision %d.%d not currently supported\n",
309 lvds_ver >> 4, lvds_ver & 0xf);
310 return -ENOSYS;
311 }
312
313 lth->lvds_ver = lvds_ver;
314 lth->headerlen = headerlen;
315 lth->recordlen = recordlen;
316
317 return 0;
318 }
319
320 static int
get_fp_strap(struct drm_device * dev,struct nvbios * bios)321 get_fp_strap(struct drm_device *dev, struct nvbios *bios)
322 {
323 struct nouveau_drm *drm = nouveau_drm(dev);
324 struct nvif_object *device = &drm->client.device.object;
325
326 /*
327 * The fp strap is normally dictated by the "User Strap" in
328 * PEXTDEV_BOOT_0[20:16], but on BMP cards when bit 2 of the
329 * Internal_Flags struct at 0x48 is set, the user strap gets overriden
330 * by the PCI subsystem ID during POST, but not before the previous user
331 * strap has been committed to CR58 for CR57=0xf on head A, which may be
332 * read and used instead
333 */
334
335 if (bios->major_version < 5 && bios->data[0x48] & 0x4)
336 return NVReadVgaCrtc5758(dev, 0, 0xf) & 0xf;
337
338 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_MAXWELL)
339 return nvif_rd32(device, 0x001800) & 0x0000000f;
340 else
341 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
342 return (nvif_rd32(device, NV_PEXTDEV_BOOT_0) >> 24) & 0xf;
343 else
344 return (nvif_rd32(device, NV_PEXTDEV_BOOT_0) >> 16) & 0xf;
345 }
346
parse_fp_mode_table(struct drm_device * dev,struct nvbios * bios)347 static int parse_fp_mode_table(struct drm_device *dev, struct nvbios *bios)
348 {
349 struct nouveau_drm *drm = nouveau_drm(dev);
350 uint8_t *fptable;
351 uint8_t fptable_ver, headerlen = 0, recordlen, fpentries = 0xf, fpindex;
352 int ret, ofs, fpstrapping;
353 struct lvdstableheader lth;
354
355 if (bios->fp.fptablepointer == 0x0) {
356 /* Most laptop cards lack an fp table. They use DDC. */
357 NV_DEBUG(drm, "Pointer to flat panel table invalid\n");
358 bios->digital_min_front_porch = 0x4b;
359 return 0;
360 }
361
362 fptable = &bios->data[bios->fp.fptablepointer];
363 fptable_ver = fptable[0];
364
365 switch (fptable_ver) {
366 /*
367 * BMP version 0x5.0x11 BIOSen have version 1 like tables, but no
368 * version field, and miss one of the spread spectrum/PWM bytes.
369 * This could affect early GF2Go parts (not seen any appropriate ROMs
370 * though). Here we assume that a version of 0x05 matches this case
371 * (combining with a BMP version check would be better), as the
372 * common case for the panel type field is 0x0005, and that is in
373 * fact what we are reading the first byte of.
374 */
375 case 0x05: /* some NV10, 11, 15, 16 */
376 recordlen = 42;
377 ofs = -1;
378 break;
379 case 0x10: /* some NV15/16, and NV11+ */
380 recordlen = 44;
381 ofs = 0;
382 break;
383 case 0x20: /* NV40+ */
384 headerlen = fptable[1];
385 recordlen = fptable[2];
386 fpentries = fptable[3];
387 /*
388 * fptable[4] is the minimum
389 * RAMDAC_FP_HCRTC -> RAMDAC_FP_HSYNC_START gap
390 */
391 bios->digital_min_front_porch = fptable[4];
392 ofs = -7;
393 break;
394 default:
395 NV_ERROR(drm,
396 "FP table revision %d.%d not currently supported\n",
397 fptable_ver >> 4, fptable_ver & 0xf);
398 return -ENOSYS;
399 }
400
401 if (!bios->is_mobile) /* !mobile only needs digital_min_front_porch */
402 return 0;
403
404 ret = parse_lvds_manufacturer_table_header(dev, bios, <h);
405 if (ret)
406 return ret;
407
408 if (lth.lvds_ver == 0x30 || lth.lvds_ver == 0x40) {
409 bios->fp.fpxlatetableptr = bios->fp.lvdsmanufacturerpointer +
410 lth.headerlen + 1;
411 bios->fp.xlatwidth = lth.recordlen;
412 }
413 if (bios->fp.fpxlatetableptr == 0x0) {
414 NV_ERROR(drm, "Pointer to flat panel xlat table invalid\n");
415 return -EINVAL;
416 }
417
418 fpstrapping = get_fp_strap(dev, bios);
419
420 fpindex = bios->data[bios->fp.fpxlatetableptr +
421 fpstrapping * bios->fp.xlatwidth];
422
423 if (fpindex > fpentries) {
424 NV_ERROR(drm, "Bad flat panel table index\n");
425 return -ENOENT;
426 }
427
428 /* nv4x cards need both a strap value and fpindex of 0xf to use DDC */
429 if (lth.lvds_ver > 0x10)
430 bios->fp_no_ddc = fpstrapping != 0xf || fpindex != 0xf;
431
432 /*
433 * If either the strap or xlated fpindex value are 0xf there is no
434 * panel using a strap-derived bios mode present. this condition
435 * includes, but is different from, the DDC panel indicator above
436 */
437 if (fpstrapping == 0xf || fpindex == 0xf)
438 return 0;
439
440 bios->fp.mode_ptr = bios->fp.fptablepointer + headerlen +
441 recordlen * fpindex + ofs;
442
443 NV_INFO(drm, "BIOS FP mode: %dx%d (%dkHz pixel clock)\n",
444 ROM16(bios->data[bios->fp.mode_ptr + 11]) + 1,
445 ROM16(bios->data[bios->fp.mode_ptr + 25]) + 1,
446 ROM16(bios->data[bios->fp.mode_ptr + 7]) * 10);
447
448 return 0;
449 }
450
nouveau_bios_fp_mode(struct drm_device * dev,struct drm_display_mode * mode)451 bool nouveau_bios_fp_mode(struct drm_device *dev, struct drm_display_mode *mode)
452 {
453 struct nouveau_drm *drm = nouveau_drm(dev);
454 struct nvbios *bios = &drm->vbios;
455 uint8_t *mode_entry = &bios->data[bios->fp.mode_ptr];
456
457 if (!mode) /* just checking whether we can produce a mode */
458 return bios->fp.mode_ptr;
459
460 memset(mode, 0, sizeof(struct drm_display_mode));
461 /*
462 * For version 1.0 (version in byte 0):
463 * bytes 1-2 are "panel type", including bits on whether Colour/mono,
464 * single/dual link, and type (TFT etc.)
465 * bytes 3-6 are bits per colour in RGBX
466 */
467 mode->clock = ROM16(mode_entry[7]) * 10;
468 /* bytes 9-10 is HActive */
469 mode->hdisplay = ROM16(mode_entry[11]) + 1;
470 /*
471 * bytes 13-14 is HValid Start
472 * bytes 15-16 is HValid End
473 */
474 mode->hsync_start = ROM16(mode_entry[17]) + 1;
475 mode->hsync_end = ROM16(mode_entry[19]) + 1;
476 mode->htotal = ROM16(mode_entry[21]) + 1;
477 /* bytes 23-24, 27-30 similarly, but vertical */
478 mode->vdisplay = ROM16(mode_entry[25]) + 1;
479 mode->vsync_start = ROM16(mode_entry[31]) + 1;
480 mode->vsync_end = ROM16(mode_entry[33]) + 1;
481 mode->vtotal = ROM16(mode_entry[35]) + 1;
482 mode->flags |= (mode_entry[37] & 0x10) ?
483 DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
484 mode->flags |= (mode_entry[37] & 0x1) ?
485 DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
486 /*
487 * bytes 38-39 relate to spread spectrum settings
488 * bytes 40-43 are something to do with PWM
489 */
490
491 mode->status = MODE_OK;
492 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
493 drm_mode_set_name(mode);
494 return bios->fp.mode_ptr;
495 }
496
nouveau_bios_parse_lvds_table(struct drm_device * dev,int pxclk,bool * dl,bool * if_is_24bit)497 int nouveau_bios_parse_lvds_table(struct drm_device *dev, int pxclk, bool *dl, bool *if_is_24bit)
498 {
499 /*
500 * The LVDS table header is (mostly) described in
501 * parse_lvds_manufacturer_table_header(): the BIT header additionally
502 * contains the dual-link transition pxclk (in 10s kHz), at byte 5 - if
503 * straps are not being used for the panel, this specifies the frequency
504 * at which modes should be set up in the dual link style.
505 *
506 * Following the header, the BMP (ver 0xa) table has several records,
507 * indexed by a separate xlat table, indexed in turn by the fp strap in
508 * EXTDEV_BOOT. Each record had a config byte, followed by 6 script
509 * numbers for use by INIT_SUB which controlled panel init and power,
510 * and finally a dword of ms to sleep between power off and on
511 * operations.
512 *
513 * In the BIT versions, the table following the header serves as an
514 * integrated config and xlat table: the records in the table are
515 * indexed by the FP strap nibble in EXTDEV_BOOT, and each record has
516 * two bytes - the first as a config byte, the second for indexing the
517 * fp mode table pointed to by the BIT 'D' table
518 *
519 * DDC is not used until after card init, so selecting the correct table
520 * entry and setting the dual link flag for EDID equipped panels,
521 * requiring tests against the native-mode pixel clock, cannot be done
522 * until later, when this function should be called with non-zero pxclk
523 */
524 struct nouveau_drm *drm = nouveau_drm(dev);
525 struct nvbios *bios = &drm->vbios;
526 int fpstrapping = get_fp_strap(dev, bios), lvdsmanufacturerindex = 0;
527 struct lvdstableheader lth;
528 uint16_t lvdsofs;
529 int ret, chip_version = bios->chip_version;
530
531 ret = parse_lvds_manufacturer_table_header(dev, bios, <h);
532 if (ret)
533 return ret;
534
535 switch (lth.lvds_ver) {
536 case 0x0a: /* pre NV40 */
537 lvdsmanufacturerindex = bios->data[
538 bios->fp.fpxlatemanufacturertableptr +
539 fpstrapping];
540
541 /* we're done if this isn't the EDID panel case */
542 if (!pxclk)
543 break;
544
545 if (chip_version < 0x25) {
546 /* nv17 behaviour
547 *
548 * It seems the old style lvds script pointer is reused
549 * to select 18/24 bit colour depth for EDID panels.
550 */
551 lvdsmanufacturerindex =
552 (bios->legacy.lvds_single_a_script_ptr & 1) ?
553 2 : 0;
554 if (pxclk >= bios->fp.duallink_transition_clk)
555 lvdsmanufacturerindex++;
556 } else if (chip_version < 0x30) {
557 /* nv28 behaviour (off-chip encoder)
558 *
559 * nv28 does a complex dance of first using byte 121 of
560 * the EDID to choose the lvdsmanufacturerindex, then
561 * later attempting to match the EDID manufacturer and
562 * product IDs in a table (signature 'pidt' (panel id
563 * table?)), setting an lvdsmanufacturerindex of 0 and
564 * an fp strap of the match index (or 0xf if none)
565 */
566 lvdsmanufacturerindex = 0;
567 } else {
568 /* nv31, nv34 behaviour */
569 lvdsmanufacturerindex = 0;
570 if (pxclk >= bios->fp.duallink_transition_clk)
571 lvdsmanufacturerindex = 2;
572 if (pxclk >= 140000)
573 lvdsmanufacturerindex = 3;
574 }
575
576 /*
577 * nvidia set the high nibble of (cr57=f, cr58) to
578 * lvdsmanufacturerindex in this case; we don't
579 */
580 break;
581 case 0x30: /* NV4x */
582 case 0x40: /* G80/G90 */
583 lvdsmanufacturerindex = fpstrapping;
584 break;
585 default:
586 NV_ERROR(drm, "LVDS table revision not currently supported\n");
587 return -ENOSYS;
588 }
589
590 lvdsofs = bios->fp.xlated_entry = bios->fp.lvdsmanufacturerpointer + lth.headerlen + lth.recordlen * lvdsmanufacturerindex;
591 switch (lth.lvds_ver) {
592 case 0x0a:
593 bios->fp.power_off_for_reset = bios->data[lvdsofs] & 1;
594 bios->fp.reset_after_pclk_change = bios->data[lvdsofs] & 2;
595 bios->fp.dual_link = bios->data[lvdsofs] & 4;
596 bios->fp.link_c_increment = bios->data[lvdsofs] & 8;
597 *if_is_24bit = bios->data[lvdsofs] & 16;
598 break;
599 case 0x30:
600 case 0x40:
601 /*
602 * No sign of the "power off for reset" or "reset for panel
603 * on" bits, but it's safer to assume we should
604 */
605 bios->fp.power_off_for_reset = true;
606 bios->fp.reset_after_pclk_change = true;
607
608 /*
609 * It's ok lvdsofs is wrong for nv4x edid case; dual_link is
610 * over-written, and if_is_24bit isn't used
611 */
612 bios->fp.dual_link = bios->data[lvdsofs] & 1;
613 bios->fp.if_is_24bit = bios->data[lvdsofs] & 2;
614 bios->fp.strapless_is_24bit = bios->data[bios->fp.lvdsmanufacturerpointer + 4];
615 bios->fp.duallink_transition_clk = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 5]) * 10;
616 break;
617 }
618
619 /* set dual_link flag for EDID case */
620 if (pxclk && (chip_version < 0x25 || chip_version > 0x28))
621 bios->fp.dual_link = (pxclk >= bios->fp.duallink_transition_clk);
622
623 *dl = bios->fp.dual_link;
624
625 return 0;
626 }
627
run_tmds_table(struct drm_device * dev,struct dcb_output * dcbent,int head,int pxclk)628 int run_tmds_table(struct drm_device *dev, struct dcb_output *dcbent, int head, int pxclk)
629 {
630 /*
631 * the pxclk parameter is in kHz
632 *
633 * This runs the TMDS regs setting code found on BIT bios cards
634 *
635 * For ffs(or) == 1 use the first table, for ffs(or) == 2 and
636 * ffs(or) == 3, use the second.
637 */
638
639 struct nouveau_drm *drm = nouveau_drm(dev);
640 struct nvif_object *device = &drm->client.device.object;
641 struct nvbios *bios = &drm->vbios;
642 int cv = bios->chip_version;
643 uint16_t clktable = 0, scriptptr;
644 uint32_t sel_clk_binding, sel_clk;
645
646 /* pre-nv17 off-chip tmds uses scripts, post nv17 doesn't */
647 if (cv >= 0x17 && cv != 0x1a && cv != 0x20 &&
648 dcbent->location != DCB_LOC_ON_CHIP)
649 return 0;
650
651 switch (ffs(dcbent->or)) {
652 case 1:
653 clktable = bios->tmds.output0_script_ptr;
654 break;
655 case 2:
656 case 3:
657 clktable = bios->tmds.output1_script_ptr;
658 break;
659 }
660
661 if (!clktable) {
662 NV_ERROR(drm, "Pixel clock comparison table not found\n");
663 return -EINVAL;
664 }
665
666 scriptptr = clkcmptable(bios, clktable, pxclk);
667
668 if (!scriptptr) {
669 NV_ERROR(drm, "TMDS output init script not found\n");
670 return -ENOENT;
671 }
672
673 /* don't let script change pll->head binding */
674 sel_clk_binding = nvif_rd32(device, NV_PRAMDAC_SEL_CLK) & 0x50000;
675 run_digital_op_script(dev, scriptptr, dcbent, head, pxclk >= 165000);
676 sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK) & ~0x50000;
677 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, sel_clk | sel_clk_binding);
678
679 return 0;
680 }
681
parse_script_table_pointers(struct nvbios * bios,uint16_t offset)682 static void parse_script_table_pointers(struct nvbios *bios, uint16_t offset)
683 {
684 /*
685 * Parses the init table segment for pointers used in script execution.
686 *
687 * offset + 0 (16 bits): init script tables pointer
688 * offset + 2 (16 bits): macro index table pointer
689 * offset + 4 (16 bits): macro table pointer
690 * offset + 6 (16 bits): condition table pointer
691 * offset + 8 (16 bits): io condition table pointer
692 * offset + 10 (16 bits): io flag condition table pointer
693 * offset + 12 (16 bits): init function table pointer
694 */
695
696 bios->init_script_tbls_ptr = ROM16(bios->data[offset]);
697 }
698
parse_bit_A_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)699 static int parse_bit_A_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
700 {
701 /*
702 * Parses the load detect values for g80 cards.
703 *
704 * offset + 0 (16 bits): loadval table pointer
705 */
706
707 struct nouveau_drm *drm = nouveau_drm(dev);
708 uint16_t load_table_ptr;
709 uint8_t version, headerlen, entrylen, num_entries;
710
711 if (bitentry->length != 3) {
712 NV_ERROR(drm, "Do not understand BIT A table\n");
713 return -EINVAL;
714 }
715
716 load_table_ptr = ROM16(bios->data[bitentry->offset]);
717
718 if (load_table_ptr == 0x0) {
719 NV_DEBUG(drm, "Pointer to BIT loadval table invalid\n");
720 return -EINVAL;
721 }
722
723 version = bios->data[load_table_ptr];
724
725 if (version != 0x10) {
726 NV_ERROR(drm, "BIT loadval table version %d.%d not supported\n",
727 version >> 4, version & 0xF);
728 return -ENOSYS;
729 }
730
731 headerlen = bios->data[load_table_ptr + 1];
732 entrylen = bios->data[load_table_ptr + 2];
733 num_entries = bios->data[load_table_ptr + 3];
734
735 if (headerlen != 4 || entrylen != 4 || num_entries != 2) {
736 NV_ERROR(drm, "Do not understand BIT loadval table\n");
737 return -EINVAL;
738 }
739
740 /* First entry is normal dac, 2nd tv-out perhaps? */
741 bios->dactestval = ROM32(bios->data[load_table_ptr + headerlen]) & 0x3ff;
742
743 return 0;
744 }
745
parse_bit_display_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)746 static int parse_bit_display_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
747 {
748 /*
749 * Parses the flat panel table segment that the bit entry points to.
750 * Starting at bitentry->offset:
751 *
752 * offset + 0 (16 bits): ??? table pointer - seems to have 18 byte
753 * records beginning with a freq.
754 * offset + 2 (16 bits): mode table pointer
755 */
756 struct nouveau_drm *drm = nouveau_drm(dev);
757
758 if (bitentry->length != 4) {
759 NV_ERROR(drm, "Do not understand BIT display table\n");
760 return -EINVAL;
761 }
762
763 bios->fp.fptablepointer = ROM16(bios->data[bitentry->offset + 2]);
764
765 return 0;
766 }
767
parse_bit_init_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)768 static int parse_bit_init_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
769 {
770 /*
771 * Parses the init table segment that the bit entry points to.
772 *
773 * See parse_script_table_pointers for layout
774 */
775 struct nouveau_drm *drm = nouveau_drm(dev);
776
777 if (bitentry->length < 14) {
778 NV_ERROR(drm, "Do not understand init table\n");
779 return -EINVAL;
780 }
781
782 parse_script_table_pointers(bios, bitentry->offset);
783 return 0;
784 }
785
parse_bit_i_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)786 static int parse_bit_i_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
787 {
788 /*
789 * BIT 'i' (info?) table
790 *
791 * offset + 0 (32 bits): BIOS version dword (as in B table)
792 * offset + 5 (8 bits): BIOS feature byte (same as for BMP?)
793 * offset + 13 (16 bits): pointer to table containing DAC load
794 * detection comparison values
795 *
796 * There's other things in the table, purpose unknown
797 */
798
799 struct nouveau_drm *drm = nouveau_drm(dev);
800 uint16_t daccmpoffset;
801 uint8_t dacver, dacheaderlen;
802
803 if (bitentry->length < 6) {
804 NV_ERROR(drm, "BIT i table too short for needed information\n");
805 return -EINVAL;
806 }
807
808 /*
809 * bit 4 seems to indicate a mobile bios (doesn't suffer from BMP's
810 * Quadro identity crisis), other bits possibly as for BMP feature byte
811 */
812 bios->feature_byte = bios->data[bitentry->offset + 5];
813 bios->is_mobile = bios->feature_byte & FEATURE_MOBILE;
814
815 if (bitentry->length < 15) {
816 NV_WARN(drm, "BIT i table not long enough for DAC load "
817 "detection comparison table\n");
818 return -EINVAL;
819 }
820
821 daccmpoffset = ROM16(bios->data[bitentry->offset + 13]);
822
823 /* doesn't exist on g80 */
824 if (!daccmpoffset)
825 return 0;
826
827 /*
828 * The first value in the table, following the header, is the
829 * comparison value, the second entry is a comparison value for
830 * TV load detection.
831 */
832
833 dacver = bios->data[daccmpoffset];
834 dacheaderlen = bios->data[daccmpoffset + 1];
835
836 if (dacver != 0x00 && dacver != 0x10) {
837 NV_WARN(drm, "DAC load detection comparison table version "
838 "%d.%d not known\n", dacver >> 4, dacver & 0xf);
839 return -ENOSYS;
840 }
841
842 bios->dactestval = ROM32(bios->data[daccmpoffset + dacheaderlen]);
843 bios->tvdactestval = ROM32(bios->data[daccmpoffset + dacheaderlen + 4]);
844
845 return 0;
846 }
847
parse_bit_lvds_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)848 static int parse_bit_lvds_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
849 {
850 /*
851 * Parses the LVDS table segment that the bit entry points to.
852 * Starting at bitentry->offset:
853 *
854 * offset + 0 (16 bits): LVDS strap xlate table pointer
855 */
856
857 struct nouveau_drm *drm = nouveau_drm(dev);
858
859 if (bitentry->length != 2) {
860 NV_ERROR(drm, "Do not understand BIT LVDS table\n");
861 return -EINVAL;
862 }
863
864 /*
865 * No idea if it's still called the LVDS manufacturer table, but
866 * the concept's close enough.
867 */
868 bios->fp.lvdsmanufacturerpointer = ROM16(bios->data[bitentry->offset]);
869
870 return 0;
871 }
872
873 static int
parse_bit_M_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)874 parse_bit_M_tbl_entry(struct drm_device *dev, struct nvbios *bios,
875 struct bit_entry *bitentry)
876 {
877 /*
878 * offset + 2 (8 bits): number of options in an
879 * INIT_RAM_RESTRICT_ZM_REG_GROUP opcode option set
880 * offset + 3 (16 bits): pointer to strap xlate table for RAM
881 * restrict option selection
882 *
883 * There's a bunch of bits in this table other than the RAM restrict
884 * stuff that we don't use - their use currently unknown
885 */
886
887 /*
888 * Older bios versions don't have a sufficiently long table for
889 * what we want
890 */
891 if (bitentry->length < 0x5)
892 return 0;
893
894 if (bitentry->version < 2) {
895 bios->ram_restrict_group_count = bios->data[bitentry->offset + 2];
896 bios->ram_restrict_tbl_ptr = ROM16(bios->data[bitentry->offset + 3]);
897 } else {
898 bios->ram_restrict_group_count = bios->data[bitentry->offset + 0];
899 bios->ram_restrict_tbl_ptr = ROM16(bios->data[bitentry->offset + 1]);
900 }
901
902 return 0;
903 }
904
parse_bit_tmds_tbl_entry(struct drm_device * dev,struct nvbios * bios,struct bit_entry * bitentry)905 static int parse_bit_tmds_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
906 {
907 /*
908 * Parses the pointer to the TMDS table
909 *
910 * Starting at bitentry->offset:
911 *
912 * offset + 0 (16 bits): TMDS table pointer
913 *
914 * The TMDS table is typically found just before the DCB table, with a
915 * characteristic signature of 0x11,0x13 (1.1 being version, 0x13 being
916 * length?)
917 *
918 * At offset +7 is a pointer to a script, which I don't know how to
919 * run yet.
920 * At offset +9 is a pointer to another script, likewise
921 * Offset +11 has a pointer to a table where the first word is a pxclk
922 * frequency and the second word a pointer to a script, which should be
923 * run if the comparison pxclk frequency is less than the pxclk desired.
924 * This repeats for decreasing comparison frequencies
925 * Offset +13 has a pointer to a similar table
926 * The selection of table (and possibly +7/+9 script) is dictated by
927 * "or" from the DCB.
928 */
929
930 struct nouveau_drm *drm = nouveau_drm(dev);
931 uint16_t tmdstableptr, script1, script2;
932
933 if (bitentry->length != 2) {
934 NV_ERROR(drm, "Do not understand BIT TMDS table\n");
935 return -EINVAL;
936 }
937
938 tmdstableptr = ROM16(bios->data[bitentry->offset]);
939 if (!tmdstableptr) {
940 NV_INFO(drm, "Pointer to TMDS table not found\n");
941 return -EINVAL;
942 }
943
944 NV_INFO(drm, "TMDS table version %d.%d\n",
945 bios->data[tmdstableptr] >> 4, bios->data[tmdstableptr] & 0xf);
946
947 /* nv50+ has v2.0, but we don't parse it atm */
948 if (bios->data[tmdstableptr] != 0x11)
949 return -ENOSYS;
950
951 /*
952 * These two scripts are odd: they don't seem to get run even when
953 * they are not stubbed.
954 */
955 script1 = ROM16(bios->data[tmdstableptr + 7]);
956 script2 = ROM16(bios->data[tmdstableptr + 9]);
957 if (bios->data[script1] != 'q' || bios->data[script2] != 'q')
958 NV_WARN(drm, "TMDS table script pointers not stubbed\n");
959
960 bios->tmds.output0_script_ptr = ROM16(bios->data[tmdstableptr + 11]);
961 bios->tmds.output1_script_ptr = ROM16(bios->data[tmdstableptr + 13]);
962
963 return 0;
964 }
965
966 struct bit_table {
967 const char id;
968 int (* const parse_fn)(struct drm_device *, struct nvbios *, struct bit_entry *);
969 };
970
971 #define BIT_TABLE(id, funcid) ((struct bit_table){ id, parse_bit_##funcid##_tbl_entry })
972
973 int
bit_table(struct drm_device * dev,u8 id,struct bit_entry * bit)974 bit_table(struct drm_device *dev, u8 id, struct bit_entry *bit)
975 {
976 struct nouveau_drm *drm = nouveau_drm(dev);
977 struct nvbios *bios = &drm->vbios;
978 u8 entries, *entry;
979
980 if (bios->type != NVBIOS_BIT)
981 return -ENODEV;
982
983 entries = bios->data[bios->offset + 10];
984 entry = &bios->data[bios->offset + 12];
985 while (entries--) {
986 if (entry[0] == id) {
987 bit->id = entry[0];
988 bit->version = entry[1];
989 bit->length = ROM16(entry[2]);
990 bit->offset = ROM16(entry[4]);
991 bit->data = ROMPTR(dev, entry[4]);
992 return 0;
993 }
994
995 entry += bios->data[bios->offset + 9];
996 }
997
998 return -ENOENT;
999 }
1000
1001 static int
parse_bit_table(struct nvbios * bios,const uint16_t bitoffset,struct bit_table * table)1002 parse_bit_table(struct nvbios *bios, const uint16_t bitoffset,
1003 struct bit_table *table)
1004 {
1005 struct drm_device *dev = bios->dev;
1006 struct nouveau_drm *drm = nouveau_drm(dev);
1007 struct bit_entry bitentry;
1008
1009 if (bit_table(dev, table->id, &bitentry) == 0)
1010 return table->parse_fn(dev, bios, &bitentry);
1011
1012 NV_INFO(drm, "BIT table '%c' not found\n", table->id);
1013 return -ENOSYS;
1014 }
1015
1016 static int
parse_bit_structure(struct nvbios * bios,const uint16_t bitoffset)1017 parse_bit_structure(struct nvbios *bios, const uint16_t bitoffset)
1018 {
1019 int ret;
1020
1021 /*
1022 * The only restriction on parsing order currently is having 'i' first
1023 * for use of bios->*_version or bios->feature_byte while parsing;
1024 * functions shouldn't be actually *doing* anything apart from pulling
1025 * data from the image into the bios struct, thus no interdependencies
1026 */
1027 ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('i', i));
1028 if (ret) /* info? */
1029 return ret;
1030 if (bios->major_version >= 0x60) /* g80+ */
1031 parse_bit_table(bios, bitoffset, &BIT_TABLE('A', A));
1032 parse_bit_table(bios, bitoffset, &BIT_TABLE('D', display));
1033 ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('I', init));
1034 if (ret)
1035 return ret;
1036 parse_bit_table(bios, bitoffset, &BIT_TABLE('M', M)); /* memory? */
1037 parse_bit_table(bios, bitoffset, &BIT_TABLE('L', lvds));
1038 parse_bit_table(bios, bitoffset, &BIT_TABLE('T', tmds));
1039
1040 return 0;
1041 }
1042
parse_bmp_structure(struct drm_device * dev,struct nvbios * bios,unsigned int offset)1043 static int parse_bmp_structure(struct drm_device *dev, struct nvbios *bios, unsigned int offset)
1044 {
1045 /*
1046 * Parses the BMP structure for useful things, but does not act on them
1047 *
1048 * offset + 5: BMP major version
1049 * offset + 6: BMP minor version
1050 * offset + 9: BMP feature byte
1051 * offset + 10: BCD encoded BIOS version
1052 *
1053 * offset + 18: init script table pointer (for bios versions < 5.10h)
1054 * offset + 20: extra init script table pointer (for bios
1055 * versions < 5.10h)
1056 *
1057 * offset + 24: memory init table pointer (used on early bios versions)
1058 * offset + 26: SDR memory sequencing setup data table
1059 * offset + 28: DDR memory sequencing setup data table
1060 *
1061 * offset + 54: index of I2C CRTC pair to use for CRT output
1062 * offset + 55: index of I2C CRTC pair to use for TV output
1063 * offset + 56: index of I2C CRTC pair to use for flat panel output
1064 * offset + 58: write CRTC index for I2C pair 0
1065 * offset + 59: read CRTC index for I2C pair 0
1066 * offset + 60: write CRTC index for I2C pair 1
1067 * offset + 61: read CRTC index for I2C pair 1
1068 *
1069 * offset + 67: maximum internal PLL frequency (single stage PLL)
1070 * offset + 71: minimum internal PLL frequency (single stage PLL)
1071 *
1072 * offset + 75: script table pointers, as described in
1073 * parse_script_table_pointers
1074 *
1075 * offset + 89: TMDS single link output A table pointer
1076 * offset + 91: TMDS single link output B table pointer
1077 * offset + 95: LVDS single link output A table pointer
1078 * offset + 105: flat panel timings table pointer
1079 * offset + 107: flat panel strapping translation table pointer
1080 * offset + 117: LVDS manufacturer panel config table pointer
1081 * offset + 119: LVDS manufacturer strapping translation table pointer
1082 *
1083 * offset + 142: PLL limits table pointer
1084 *
1085 * offset + 156: minimum pixel clock for LVDS dual link
1086 */
1087
1088 struct nouveau_drm *drm = nouveau_drm(dev);
1089 uint8_t *bmp = &bios->data[offset], bmp_version_major, bmp_version_minor;
1090 uint16_t bmplength;
1091 uint16_t legacy_scripts_offset, legacy_i2c_offset;
1092
1093 /* load needed defaults in case we can't parse this info */
1094 bios->digital_min_front_porch = 0x4b;
1095 bios->fmaxvco = 256000;
1096 bios->fminvco = 128000;
1097 bios->fp.duallink_transition_clk = 90000;
1098
1099 bmp_version_major = bmp[5];
1100 bmp_version_minor = bmp[6];
1101
1102 NV_INFO(drm, "BMP version %d.%d\n",
1103 bmp_version_major, bmp_version_minor);
1104
1105 /*
1106 * Make sure that 0x36 is blank and can't be mistaken for a DCB
1107 * pointer on early versions
1108 */
1109 if (bmp_version_major < 5)
1110 *(uint16_t *)&bios->data[0x36] = 0;
1111
1112 /*
1113 * Seems that the minor version was 1 for all major versions prior
1114 * to 5. Version 6 could theoretically exist, but I suspect BIT
1115 * happened instead.
1116 */
1117 if ((bmp_version_major < 5 && bmp_version_minor != 1) || bmp_version_major > 5) {
1118 NV_ERROR(drm, "You have an unsupported BMP version. "
1119 "Please send in your bios\n");
1120 return -ENOSYS;
1121 }
1122
1123 if (bmp_version_major == 0)
1124 /* nothing that's currently useful in this version */
1125 return 0;
1126 else if (bmp_version_major == 1)
1127 bmplength = 44; /* exact for 1.01 */
1128 else if (bmp_version_major == 2)
1129 bmplength = 48; /* exact for 2.01 */
1130 else if (bmp_version_major == 3)
1131 bmplength = 54;
1132 /* guessed - mem init tables added in this version */
1133 else if (bmp_version_major == 4 || bmp_version_minor < 0x1)
1134 /* don't know if 5.0 exists... */
1135 bmplength = 62;
1136 /* guessed - BMP I2C indices added in version 4*/
1137 else if (bmp_version_minor < 0x6)
1138 bmplength = 67; /* exact for 5.01 */
1139 else if (bmp_version_minor < 0x10)
1140 bmplength = 75; /* exact for 5.06 */
1141 else if (bmp_version_minor == 0x10)
1142 bmplength = 89; /* exact for 5.10h */
1143 else if (bmp_version_minor < 0x14)
1144 bmplength = 118; /* exact for 5.11h */
1145 else if (bmp_version_minor < 0x24)
1146 /*
1147 * Not sure of version where pll limits came in;
1148 * certainly exist by 0x24 though.
1149 */
1150 /* length not exact: this is long enough to get lvds members */
1151 bmplength = 123;
1152 else if (bmp_version_minor < 0x27)
1153 /*
1154 * Length not exact: this is long enough to get pll limit
1155 * member
1156 */
1157 bmplength = 144;
1158 else
1159 /*
1160 * Length not exact: this is long enough to get dual link
1161 * transition clock.
1162 */
1163 bmplength = 158;
1164
1165 /* checksum */
1166 if (nv_cksum(bmp, 8)) {
1167 NV_ERROR(drm, "Bad BMP checksum\n");
1168 return -EINVAL;
1169 }
1170
1171 /*
1172 * Bit 4 seems to indicate either a mobile bios or a quadro card --
1173 * mobile behaviour consistent (nv11+), quadro only seen nv18gl-nv36gl
1174 * (not nv10gl), bit 5 that the flat panel tables are present, and
1175 * bit 6 a tv bios.
1176 */
1177 bios->feature_byte = bmp[9];
1178
1179 if (bmp_version_major < 5 || bmp_version_minor < 0x10)
1180 bios->old_style_init = true;
1181 legacy_scripts_offset = 18;
1182 if (bmp_version_major < 2)
1183 legacy_scripts_offset -= 4;
1184 bios->init_script_tbls_ptr = ROM16(bmp[legacy_scripts_offset]);
1185 bios->extra_init_script_tbl_ptr = ROM16(bmp[legacy_scripts_offset + 2]);
1186
1187 if (bmp_version_major > 2) { /* appears in BMP 3 */
1188 bios->legacy.mem_init_tbl_ptr = ROM16(bmp[24]);
1189 bios->legacy.sdr_seq_tbl_ptr = ROM16(bmp[26]);
1190 bios->legacy.ddr_seq_tbl_ptr = ROM16(bmp[28]);
1191 }
1192
1193 legacy_i2c_offset = 0x48; /* BMP version 2 & 3 */
1194 if (bmplength > 61)
1195 legacy_i2c_offset = offset + 54;
1196 bios->legacy.i2c_indices.crt = bios->data[legacy_i2c_offset];
1197 bios->legacy.i2c_indices.tv = bios->data[legacy_i2c_offset + 1];
1198 bios->legacy.i2c_indices.panel = bios->data[legacy_i2c_offset + 2];
1199
1200 if (bmplength > 74) {
1201 bios->fmaxvco = ROM32(bmp[67]);
1202 bios->fminvco = ROM32(bmp[71]);
1203 }
1204 if (bmplength > 88)
1205 parse_script_table_pointers(bios, offset + 75);
1206 if (bmplength > 94) {
1207 bios->tmds.output0_script_ptr = ROM16(bmp[89]);
1208 bios->tmds.output1_script_ptr = ROM16(bmp[91]);
1209 /*
1210 * Never observed in use with lvds scripts, but is reused for
1211 * 18/24 bit panel interface default for EDID equipped panels
1212 * (if_is_24bit not set directly to avoid any oscillation).
1213 */
1214 bios->legacy.lvds_single_a_script_ptr = ROM16(bmp[95]);
1215 }
1216 if (bmplength > 108) {
1217 bios->fp.fptablepointer = ROM16(bmp[105]);
1218 bios->fp.fpxlatetableptr = ROM16(bmp[107]);
1219 bios->fp.xlatwidth = 1;
1220 }
1221 if (bmplength > 120) {
1222 bios->fp.lvdsmanufacturerpointer = ROM16(bmp[117]);
1223 bios->fp.fpxlatemanufacturertableptr = ROM16(bmp[119]);
1224 }
1225 #if 0
1226 if (bmplength > 143)
1227 bios->pll_limit_tbl_ptr = ROM16(bmp[142]);
1228 #endif
1229
1230 if (bmplength > 157)
1231 bios->fp.duallink_transition_clk = ROM16(bmp[156]) * 10;
1232
1233 return 0;
1234 }
1235
findstr(uint8_t * data,int n,const uint8_t * str,int len)1236 static uint16_t findstr(uint8_t *data, int n, const uint8_t *str, int len)
1237 {
1238 int i, j;
1239
1240 for (i = 0; i <= (n - len); i++) {
1241 for (j = 0; j < len; j++)
1242 if (data[i + j] != str[j])
1243 break;
1244 if (j == len)
1245 return i;
1246 }
1247
1248 return 0;
1249 }
1250
1251 void *
olddcb_table(struct drm_device * dev)1252 olddcb_table(struct drm_device *dev)
1253 {
1254 struct nouveau_drm *drm = nouveau_drm(dev);
1255 u8 *dcb = NULL;
1256
1257 if (drm->client.device.info.family > NV_DEVICE_INFO_V0_TNT)
1258 dcb = ROMPTR(dev, drm->vbios.data[0x36]);
1259 if (!dcb) {
1260 NV_WARN(drm, "No DCB data found in VBIOS\n");
1261 return NULL;
1262 }
1263
1264 if (dcb[0] >= 0x42) {
1265 NV_WARN(drm, "DCB version 0x%02x unknown\n", dcb[0]);
1266 return NULL;
1267 } else
1268 if (dcb[0] >= 0x30) {
1269 if (ROM32(dcb[6]) == 0x4edcbdcb)
1270 return dcb;
1271 } else
1272 if (dcb[0] >= 0x20) {
1273 if (ROM32(dcb[4]) == 0x4edcbdcb)
1274 return dcb;
1275 } else
1276 if (dcb[0] >= 0x15) {
1277 if (!memcmp(&dcb[-7], "DEV_REC", 7))
1278 return dcb;
1279 } else {
1280 /*
1281 * v1.4 (some NV15/16, NV11+) seems the same as v1.5, but
1282 * always has the same single (crt) entry, even when tv-out
1283 * present, so the conclusion is this version cannot really
1284 * be used.
1285 *
1286 * v1.2 tables (some NV6/10, and NV15+) normally have the
1287 * same 5 entries, which are not specific to the card and so
1288 * no use.
1289 *
1290 * v1.2 does have an I2C table that read_dcb_i2c_table can
1291 * handle, but cards exist (nv11 in #14821) with a bad i2c
1292 * table pointer, so use the indices parsed in
1293 * parse_bmp_structure.
1294 *
1295 * v1.1 (NV5+, maybe some NV4) is entirely unhelpful
1296 */
1297 NV_WARN(drm, "No useful DCB data in VBIOS\n");
1298 return NULL;
1299 }
1300
1301 NV_WARN(drm, "DCB header validation failed\n");
1302 return NULL;
1303 }
1304
1305 void *
olddcb_outp(struct drm_device * dev,u8 idx)1306 olddcb_outp(struct drm_device *dev, u8 idx)
1307 {
1308 u8 *dcb = olddcb_table(dev);
1309 if (dcb && dcb[0] >= 0x30) {
1310 if (idx < dcb[2])
1311 return dcb + dcb[1] + (idx * dcb[3]);
1312 } else
1313 if (dcb && dcb[0] >= 0x20) {
1314 u8 *i2c = ROMPTR(dev, dcb[2]);
1315 u8 *ent = dcb + 8 + (idx * 8);
1316 if (i2c && ent < i2c)
1317 return ent;
1318 } else
1319 if (dcb && dcb[0] >= 0x15) {
1320 u8 *i2c = ROMPTR(dev, dcb[2]);
1321 u8 *ent = dcb + 4 + (idx * 10);
1322 if (i2c && ent < i2c)
1323 return ent;
1324 }
1325
1326 return NULL;
1327 }
1328
1329 int
olddcb_outp_foreach(struct drm_device * dev,void * data,int (* exec)(struct drm_device *,void *,int idx,u8 * outp))1330 olddcb_outp_foreach(struct drm_device *dev, void *data,
1331 int (*exec)(struct drm_device *, void *, int idx, u8 *outp))
1332 {
1333 int ret, idx = -1;
1334 u8 *outp = NULL;
1335 while ((outp = olddcb_outp(dev, ++idx))) {
1336 if (ROM32(outp[0]) == 0x00000000)
1337 break; /* seen on an NV11 with DCB v1.5 */
1338 if (ROM32(outp[0]) == 0xffffffff)
1339 break; /* seen on an NV17 with DCB v2.0 */
1340
1341 if ((outp[0] & 0x0f) == DCB_OUTPUT_UNUSED)
1342 continue;
1343 if ((outp[0] & 0x0f) == DCB_OUTPUT_EOL)
1344 break;
1345
1346 ret = exec(dev, data, idx, outp);
1347 if (ret)
1348 return ret;
1349 }
1350
1351 return 0;
1352 }
1353
1354 u8 *
olddcb_conntab(struct drm_device * dev)1355 olddcb_conntab(struct drm_device *dev)
1356 {
1357 u8 *dcb = olddcb_table(dev);
1358 if (dcb && dcb[0] >= 0x30 && dcb[1] >= 0x16) {
1359 u8 *conntab = ROMPTR(dev, dcb[0x14]);
1360 if (conntab && conntab[0] >= 0x30 && conntab[0] <= 0x40)
1361 return conntab;
1362 }
1363 return NULL;
1364 }
1365
1366 u8 *
olddcb_conn(struct drm_device * dev,u8 idx)1367 olddcb_conn(struct drm_device *dev, u8 idx)
1368 {
1369 u8 *conntab = olddcb_conntab(dev);
1370 if (conntab && idx < conntab[2])
1371 return conntab + conntab[1] + (idx * conntab[3]);
1372 return NULL;
1373 }
1374
new_dcb_entry(struct dcb_table * dcb)1375 static struct dcb_output *new_dcb_entry(struct dcb_table *dcb)
1376 {
1377 struct dcb_output *entry = &dcb->entry[dcb->entries];
1378
1379 memset(entry, 0, sizeof(struct dcb_output));
1380 entry->index = dcb->entries++;
1381
1382 return entry;
1383 }
1384
fabricate_dcb_output(struct dcb_table * dcb,int type,int i2c,int heads,int or)1385 static void fabricate_dcb_output(struct dcb_table *dcb, int type, int i2c,
1386 int heads, int or)
1387 {
1388 struct dcb_output *entry = new_dcb_entry(dcb);
1389
1390 entry->type = type;
1391 entry->i2c_index = i2c;
1392 entry->heads = heads;
1393 if (type != DCB_OUTPUT_ANALOG)
1394 entry->location = !DCB_LOC_ON_CHIP; /* ie OFF CHIP */
1395 entry->or = or;
1396 }
1397
1398 static bool
parse_dcb20_entry(struct drm_device * dev,struct dcb_table * dcb,uint32_t conn,uint32_t conf,struct dcb_output * entry)1399 parse_dcb20_entry(struct drm_device *dev, struct dcb_table *dcb,
1400 uint32_t conn, uint32_t conf, struct dcb_output *entry)
1401 {
1402 struct nouveau_drm *drm = nouveau_drm(dev);
1403 int link = 0;
1404
1405 entry->type = conn & 0xf;
1406 entry->i2c_index = (conn >> 4) & 0xf;
1407 entry->heads = (conn >> 8) & 0xf;
1408 entry->connector = (conn >> 12) & 0xf;
1409 entry->bus = (conn >> 16) & 0xf;
1410 entry->location = (conn >> 20) & 0x3;
1411 entry->or = (conn >> 24) & 0xf;
1412
1413 switch (entry->type) {
1414 case DCB_OUTPUT_ANALOG:
1415 /*
1416 * Although the rest of a CRT conf dword is usually
1417 * zeros, mac biosen have stuff there so we must mask
1418 */
1419 entry->crtconf.maxfreq = (dcb->version < 0x30) ?
1420 (conf & 0xffff) * 10 :
1421 (conf & 0xff) * 10000;
1422 break;
1423 case DCB_OUTPUT_LVDS:
1424 {
1425 uint32_t mask;
1426 if (conf & 0x1)
1427 entry->lvdsconf.use_straps_for_mode = true;
1428 if (dcb->version < 0x22) {
1429 mask = ~0xd;
1430 /*
1431 * The laptop in bug 14567 lies and claims to not use
1432 * straps when it does, so assume all DCB 2.0 laptops
1433 * use straps, until a broken EDID using one is produced
1434 */
1435 entry->lvdsconf.use_straps_for_mode = true;
1436 /*
1437 * Both 0x4 and 0x8 show up in v2.0 tables; assume they
1438 * mean the same thing (probably wrong, but might work)
1439 */
1440 if (conf & 0x4 || conf & 0x8)
1441 entry->lvdsconf.use_power_scripts = true;
1442 } else {
1443 mask = ~0x7;
1444 if (conf & 0x2)
1445 entry->lvdsconf.use_acpi_for_edid = true;
1446 if (conf & 0x4)
1447 entry->lvdsconf.use_power_scripts = true;
1448 entry->lvdsconf.sor.link = (conf & 0x00000030) >> 4;
1449 link = entry->lvdsconf.sor.link;
1450 }
1451 if (conf & mask) {
1452 /*
1453 * Until we even try to use these on G8x, it's
1454 * useless reporting unknown bits. They all are.
1455 */
1456 if (dcb->version >= 0x40)
1457 break;
1458
1459 NV_ERROR(drm, "Unknown LVDS configuration bits, "
1460 "please report\n");
1461 }
1462 break;
1463 }
1464 case DCB_OUTPUT_TV:
1465 {
1466 if (dcb->version >= 0x30)
1467 entry->tvconf.has_component_output = conf & (0x8 << 4);
1468 else
1469 entry->tvconf.has_component_output = false;
1470
1471 break;
1472 }
1473 case DCB_OUTPUT_DP:
1474 entry->dpconf.sor.link = (conf & 0x00000030) >> 4;
1475 entry->extdev = (conf & 0x0000ff00) >> 8;
1476 switch ((conf & 0x00e00000) >> 21) {
1477 case 0:
1478 entry->dpconf.link_bw = 162000;
1479 break;
1480 case 1:
1481 entry->dpconf.link_bw = 270000;
1482 break;
1483 case 2:
1484 entry->dpconf.link_bw = 540000;
1485 break;
1486 case 3:
1487 default:
1488 entry->dpconf.link_bw = 810000;
1489 break;
1490 }
1491 switch ((conf & 0x0f000000) >> 24) {
1492 case 0xf:
1493 case 0x4:
1494 entry->dpconf.link_nr = 4;
1495 break;
1496 case 0x3:
1497 case 0x2:
1498 entry->dpconf.link_nr = 2;
1499 break;
1500 default:
1501 entry->dpconf.link_nr = 1;
1502 break;
1503 }
1504 link = entry->dpconf.sor.link;
1505 break;
1506 case DCB_OUTPUT_TMDS:
1507 if (dcb->version >= 0x40) {
1508 entry->tmdsconf.sor.link = (conf & 0x00000030) >> 4;
1509 entry->extdev = (conf & 0x0000ff00) >> 8;
1510 link = entry->tmdsconf.sor.link;
1511 }
1512 else if (dcb->version >= 0x30)
1513 entry->tmdsconf.slave_addr = (conf & 0x00000700) >> 8;
1514 else if (dcb->version >= 0x22)
1515 entry->tmdsconf.slave_addr = (conf & 0x00000070) >> 4;
1516 break;
1517 case DCB_OUTPUT_EOL:
1518 /* weird g80 mobile type that "nv" treats as a terminator */
1519 dcb->entries--;
1520 return false;
1521 default:
1522 break;
1523 }
1524
1525 if (dcb->version < 0x40) {
1526 /* Normal entries consist of a single bit, but dual link has
1527 * the next most significant bit set too
1528 */
1529 entry->duallink_possible =
1530 ((1 << (ffs(entry->or) - 1)) * 3 == entry->or);
1531 } else {
1532 entry->duallink_possible = (entry->sorconf.link == 3);
1533 }
1534
1535 /* unsure what DCB version introduces this, 3.0? */
1536 if (conf & 0x100000)
1537 entry->i2c_upper_default = true;
1538
1539 entry->hasht = (entry->extdev << 8) | (entry->location << 4) |
1540 entry->type;
1541 entry->hashm = (entry->heads << 8) | (link << 6) | entry->or;
1542 return true;
1543 }
1544
1545 static bool
parse_dcb15_entry(struct drm_device * dev,struct dcb_table * dcb,uint32_t conn,uint32_t conf,struct dcb_output * entry)1546 parse_dcb15_entry(struct drm_device *dev, struct dcb_table *dcb,
1547 uint32_t conn, uint32_t conf, struct dcb_output *entry)
1548 {
1549 struct nouveau_drm *drm = nouveau_drm(dev);
1550
1551 switch (conn & 0x0000000f) {
1552 case 0:
1553 entry->type = DCB_OUTPUT_ANALOG;
1554 break;
1555 case 1:
1556 entry->type = DCB_OUTPUT_TV;
1557 break;
1558 case 2:
1559 case 4:
1560 if (conn & 0x10)
1561 entry->type = DCB_OUTPUT_LVDS;
1562 else
1563 entry->type = DCB_OUTPUT_TMDS;
1564 break;
1565 case 3:
1566 entry->type = DCB_OUTPUT_LVDS;
1567 break;
1568 default:
1569 NV_ERROR(drm, "Unknown DCB type %d\n", conn & 0x0000000f);
1570 return false;
1571 }
1572
1573 entry->i2c_index = (conn & 0x0003c000) >> 14;
1574 entry->heads = ((conn & 0x001c0000) >> 18) + 1;
1575 entry->or = entry->heads; /* same as heads, hopefully safe enough */
1576 entry->location = (conn & 0x01e00000) >> 21;
1577 entry->bus = (conn & 0x0e000000) >> 25;
1578 entry->duallink_possible = false;
1579
1580 switch (entry->type) {
1581 case DCB_OUTPUT_ANALOG:
1582 entry->crtconf.maxfreq = (conf & 0xffff) * 10;
1583 break;
1584 case DCB_OUTPUT_TV:
1585 entry->tvconf.has_component_output = false;
1586 break;
1587 case DCB_OUTPUT_LVDS:
1588 if ((conn & 0x00003f00) >> 8 != 0x10)
1589 entry->lvdsconf.use_straps_for_mode = true;
1590 entry->lvdsconf.use_power_scripts = true;
1591 break;
1592 default:
1593 break;
1594 }
1595
1596 return true;
1597 }
1598
1599 static
merge_like_dcb_entries(struct drm_device * dev,struct dcb_table * dcb)1600 void merge_like_dcb_entries(struct drm_device *dev, struct dcb_table *dcb)
1601 {
1602 /*
1603 * DCB v2.0 lists each output combination separately.
1604 * Here we merge compatible entries to have fewer outputs, with
1605 * more options
1606 */
1607
1608 struct nouveau_drm *drm = nouveau_drm(dev);
1609 int i, newentries = 0;
1610
1611 for (i = 0; i < dcb->entries; i++) {
1612 struct dcb_output *ient = &dcb->entry[i];
1613 int j;
1614
1615 for (j = i + 1; j < dcb->entries; j++) {
1616 struct dcb_output *jent = &dcb->entry[j];
1617
1618 if (jent->type == 100) /* already merged entry */
1619 continue;
1620
1621 /* merge heads field when all other fields the same */
1622 if (jent->i2c_index == ient->i2c_index &&
1623 jent->type == ient->type &&
1624 jent->location == ient->location &&
1625 jent->or == ient->or) {
1626 NV_INFO(drm, "Merging DCB entries %d and %d\n",
1627 i, j);
1628 ient->heads |= jent->heads;
1629 jent->type = 100; /* dummy value */
1630 }
1631 }
1632 }
1633
1634 /* Compact entries merged into others out of dcb */
1635 for (i = 0; i < dcb->entries; i++) {
1636 if (dcb->entry[i].type == 100)
1637 continue;
1638
1639 if (newentries != i) {
1640 dcb->entry[newentries] = dcb->entry[i];
1641 dcb->entry[newentries].index = newentries;
1642 }
1643 newentries++;
1644 }
1645
1646 dcb->entries = newentries;
1647 }
1648
1649 static bool
apply_dcb_encoder_quirks(struct drm_device * dev,int idx,u32 * conn,u32 * conf)1650 apply_dcb_encoder_quirks(struct drm_device *dev, int idx, u32 *conn, u32 *conf)
1651 {
1652 struct nouveau_drm *drm = nouveau_drm(dev);
1653 struct dcb_table *dcb = &drm->vbios.dcb;
1654
1655 /* Dell Precision M6300
1656 * DCB entry 2: 02025312 00000010
1657 * DCB entry 3: 02026312 00000020
1658 *
1659 * Identical, except apparently a different connector on a
1660 * different SOR link. Not a clue how we're supposed to know
1661 * which one is in use if it even shares an i2c line...
1662 *
1663 * Ignore the connector on the second SOR link to prevent
1664 * nasty problems until this is sorted (assuming it's not a
1665 * VBIOS bug).
1666 */
1667 if (nv_match_device(dev, 0x040d, 0x1028, 0x019b)) {
1668 if (*conn == 0x02026312 && *conf == 0x00000020)
1669 return false;
1670 }
1671
1672 /* GeForce3 Ti 200
1673 *
1674 * DCB reports an LVDS output that should be TMDS:
1675 * DCB entry 1: f2005014 ffffffff
1676 */
1677 if (nv_match_device(dev, 0x0201, 0x1462, 0x8851)) {
1678 if (*conn == 0xf2005014 && *conf == 0xffffffff) {
1679 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 1, 1, DCB_OUTPUT_B);
1680 return false;
1681 }
1682 }
1683
1684 /* XFX GT-240X-YA
1685 *
1686 * So many things wrong here, replace the entire encoder table..
1687 */
1688 if (nv_match_device(dev, 0x0ca3, 0x1682, 0x3003)) {
1689 if (idx == 0) {
1690 *conn = 0x02001300; /* VGA, connector 1 */
1691 *conf = 0x00000028;
1692 } else
1693 if (idx == 1) {
1694 *conn = 0x01010312; /* DVI, connector 0 */
1695 *conf = 0x00020030;
1696 } else
1697 if (idx == 2) {
1698 *conn = 0x01010310; /* VGA, connector 0 */
1699 *conf = 0x00000028;
1700 } else
1701 if (idx == 3) {
1702 *conn = 0x02022362; /* HDMI, connector 2 */
1703 *conf = 0x00020010;
1704 } else {
1705 *conn = 0x0000000e; /* EOL */
1706 *conf = 0x00000000;
1707 }
1708 }
1709
1710 /* Some other twisted XFX board (rhbz#694914)
1711 *
1712 * The DVI/VGA encoder combo that's supposed to represent the
1713 * DVI-I connector actually point at two different ones, and
1714 * the HDMI connector ends up paired with the VGA instead.
1715 *
1716 * Connector table is missing anything for VGA at all, pointing it
1717 * an invalid conntab entry 2 so we figure it out ourself.
1718 */
1719 if (nv_match_device(dev, 0x0615, 0x1682, 0x2605)) {
1720 if (idx == 0) {
1721 *conn = 0x02002300; /* VGA, connector 2 */
1722 *conf = 0x00000028;
1723 } else
1724 if (idx == 1) {
1725 *conn = 0x01010312; /* DVI, connector 0 */
1726 *conf = 0x00020030;
1727 } else
1728 if (idx == 2) {
1729 *conn = 0x04020310; /* VGA, connector 0 */
1730 *conf = 0x00000028;
1731 } else
1732 if (idx == 3) {
1733 *conn = 0x02021322; /* HDMI, connector 1 */
1734 *conf = 0x00020010;
1735 } else {
1736 *conn = 0x0000000e; /* EOL */
1737 *conf = 0x00000000;
1738 }
1739 }
1740
1741 /* fdo#50830: connector indices for VGA and DVI-I are backwards */
1742 if (nv_match_device(dev, 0x0421, 0x3842, 0xc793)) {
1743 if (idx == 0 && *conn == 0x02000300)
1744 *conn = 0x02011300;
1745 else
1746 if (idx == 1 && *conn == 0x04011310)
1747 *conn = 0x04000310;
1748 else
1749 if (idx == 2 && *conn == 0x02011312)
1750 *conn = 0x02000312;
1751 }
1752
1753 return true;
1754 }
1755
1756 static void
fabricate_dcb_encoder_table(struct drm_device * dev,struct nvbios * bios)1757 fabricate_dcb_encoder_table(struct drm_device *dev, struct nvbios *bios)
1758 {
1759 struct dcb_table *dcb = &bios->dcb;
1760 int all_heads = (nv_two_heads(dev) ? 3 : 1);
1761
1762 #ifdef __powerpc__
1763 /* Apple iMac G4 NV17 */
1764 if (of_machine_is_compatible("PowerMac4,5")) {
1765 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 0, all_heads, DCB_OUTPUT_B);
1766 fabricate_dcb_output(dcb, DCB_OUTPUT_ANALOG, 1, all_heads, DCB_OUTPUT_C);
1767 return;
1768 }
1769 #endif
1770
1771 /* Make up some sane defaults */
1772 fabricate_dcb_output(dcb, DCB_OUTPUT_ANALOG,
1773 bios->legacy.i2c_indices.crt, 1, DCB_OUTPUT_B);
1774
1775 if (nv04_tv_identify(dev, bios->legacy.i2c_indices.tv) >= 0)
1776 fabricate_dcb_output(dcb, DCB_OUTPUT_TV,
1777 bios->legacy.i2c_indices.tv,
1778 all_heads, DCB_OUTPUT_A);
1779
1780 else if (bios->tmds.output0_script_ptr ||
1781 bios->tmds.output1_script_ptr)
1782 fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS,
1783 bios->legacy.i2c_indices.panel,
1784 all_heads, DCB_OUTPUT_B);
1785 }
1786
1787 static int
parse_dcb_entry(struct drm_device * dev,void * data,int idx,u8 * outp)1788 parse_dcb_entry(struct drm_device *dev, void *data, int idx, u8 *outp)
1789 {
1790 struct nouveau_drm *drm = nouveau_drm(dev);
1791 struct dcb_table *dcb = &drm->vbios.dcb;
1792 u32 conf = (dcb->version >= 0x20) ? ROM32(outp[4]) : ROM32(outp[6]);
1793 u32 conn = ROM32(outp[0]);
1794 bool ret;
1795
1796 if (apply_dcb_encoder_quirks(dev, idx, &conn, &conf)) {
1797 struct dcb_output *entry = new_dcb_entry(dcb);
1798
1799 NV_INFO(drm, "DCB outp %02d: %08x %08x\n", idx, conn, conf);
1800
1801 if (dcb->version >= 0x20)
1802 ret = parse_dcb20_entry(dev, dcb, conn, conf, entry);
1803 else
1804 ret = parse_dcb15_entry(dev, dcb, conn, conf, entry);
1805 entry->id = idx;
1806
1807 if (!ret)
1808 return 1; /* stop parsing */
1809
1810 /* Ignore the I2C index for on-chip TV-out, as there
1811 * are cards with bogus values (nv31m in bug 23212),
1812 * and it's otherwise useless.
1813 */
1814 if (entry->type == DCB_OUTPUT_TV &&
1815 entry->location == DCB_LOC_ON_CHIP)
1816 entry->i2c_index = 0x0f;
1817 }
1818
1819 return 0;
1820 }
1821
1822 static void
dcb_fake_connectors(struct nvbios * bios)1823 dcb_fake_connectors(struct nvbios *bios)
1824 {
1825 struct dcb_table *dcbt = &bios->dcb;
1826 u8 map[16] = { };
1827 int i, idx = 0;
1828
1829 /* heuristic: if we ever get a non-zero connector field, assume
1830 * that all the indices are valid and we don't need fake them.
1831 *
1832 * and, as usual, a blacklist of boards with bad bios data..
1833 */
1834 if (!nv_match_device(bios->dev, 0x0392, 0x107d, 0x20a2)) {
1835 for (i = 0; i < dcbt->entries; i++) {
1836 if (dcbt->entry[i].connector)
1837 return;
1838 }
1839 }
1840
1841 /* no useful connector info available, we need to make it up
1842 * ourselves. the rule here is: anything on the same i2c bus
1843 * is considered to be on the same connector. any output
1844 * without an associated i2c bus is assigned its own unique
1845 * connector index.
1846 */
1847 for (i = 0; i < dcbt->entries; i++) {
1848 u8 i2c = dcbt->entry[i].i2c_index;
1849 if (i2c == 0x0f) {
1850 dcbt->entry[i].connector = idx++;
1851 } else {
1852 if (!map[i2c])
1853 map[i2c] = ++idx;
1854 dcbt->entry[i].connector = map[i2c] - 1;
1855 }
1856 }
1857
1858 /* if we created more than one connector, destroy the connector
1859 * table - just in case it has random, rather than stub, entries.
1860 */
1861 if (i > 1) {
1862 u8 *conntab = olddcb_conntab(bios->dev);
1863 if (conntab)
1864 conntab[0] = 0x00;
1865 }
1866 }
1867
1868 static int
parse_dcb_table(struct drm_device * dev,struct nvbios * bios)1869 parse_dcb_table(struct drm_device *dev, struct nvbios *bios)
1870 {
1871 struct nouveau_drm *drm = nouveau_drm(dev);
1872 struct dcb_table *dcb = &bios->dcb;
1873 u8 *dcbt, *conn;
1874 int idx;
1875
1876 dcbt = olddcb_table(dev);
1877 if (!dcbt) {
1878 /* handle pre-DCB boards */
1879 if (bios->type == NVBIOS_BMP) {
1880 fabricate_dcb_encoder_table(dev, bios);
1881 return 0;
1882 }
1883
1884 return -EINVAL;
1885 }
1886
1887 NV_INFO(drm, "DCB version %d.%d\n", dcbt[0] >> 4, dcbt[0] & 0xf);
1888
1889 dcb->version = dcbt[0];
1890 olddcb_outp_foreach(dev, NULL, parse_dcb_entry);
1891
1892 /*
1893 * apart for v2.1+ not being known for requiring merging, this
1894 * guarantees dcbent->index is the index of the entry in the rom image
1895 */
1896 if (dcb->version < 0x21)
1897 merge_like_dcb_entries(dev, dcb);
1898
1899 /* dump connector table entries to log, if any exist */
1900 idx = -1;
1901 while ((conn = olddcb_conn(dev, ++idx))) {
1902 if (conn[0] != 0xff) {
1903 if (olddcb_conntab(dev)[3] < 4)
1904 NV_INFO(drm, "DCB conn %02d: %04x\n",
1905 idx, ROM16(conn[0]));
1906 else
1907 NV_INFO(drm, "DCB conn %02d: %08x\n",
1908 idx, ROM32(conn[0]));
1909 }
1910 }
1911 dcb_fake_connectors(bios);
1912 return 0;
1913 }
1914
load_nv17_hwsq_ucode_entry(struct drm_device * dev,struct nvbios * bios,uint16_t hwsq_offset,int entry)1915 static int load_nv17_hwsq_ucode_entry(struct drm_device *dev, struct nvbios *bios, uint16_t hwsq_offset, int entry)
1916 {
1917 /*
1918 * The header following the "HWSQ" signature has the number of entries,
1919 * and the entry size
1920 *
1921 * An entry consists of a dword to write to the sequencer control reg
1922 * (0x00001304), followed by the ucode bytes, written sequentially,
1923 * starting at reg 0x00001400
1924 */
1925
1926 struct nouveau_drm *drm = nouveau_drm(dev);
1927 struct nvif_object *device = &drm->client.device.object;
1928 uint8_t bytes_to_write;
1929 uint16_t hwsq_entry_offset;
1930 int i;
1931
1932 if (bios->data[hwsq_offset] <= entry) {
1933 NV_ERROR(drm, "Too few entries in HW sequencer table for "
1934 "requested entry\n");
1935 return -ENOENT;
1936 }
1937
1938 bytes_to_write = bios->data[hwsq_offset + 1];
1939
1940 if (bytes_to_write != 36) {
1941 NV_ERROR(drm, "Unknown HW sequencer entry size\n");
1942 return -EINVAL;
1943 }
1944
1945 NV_INFO(drm, "Loading NV17 power sequencing microcode\n");
1946
1947 hwsq_entry_offset = hwsq_offset + 2 + entry * bytes_to_write;
1948
1949 /* set sequencer control */
1950 nvif_wr32(device, 0x00001304, ROM32(bios->data[hwsq_entry_offset]));
1951 bytes_to_write -= 4;
1952
1953 /* write ucode */
1954 for (i = 0; i < bytes_to_write; i += 4)
1955 nvif_wr32(device, 0x00001400 + i, ROM32(bios->data[hwsq_entry_offset + i + 4]));
1956
1957 /* twiddle NV_PBUS_DEBUG_4 */
1958 nvif_wr32(device, NV_PBUS_DEBUG_4, nvif_rd32(device, NV_PBUS_DEBUG_4) | 0x18);
1959
1960 return 0;
1961 }
1962
load_nv17_hw_sequencer_ucode(struct drm_device * dev,struct nvbios * bios)1963 static int load_nv17_hw_sequencer_ucode(struct drm_device *dev,
1964 struct nvbios *bios)
1965 {
1966 /*
1967 * BMP based cards, from NV17, need a microcode loading to correctly
1968 * control the GPIO etc for LVDS panels
1969 *
1970 * BIT based cards seem to do this directly in the init scripts
1971 *
1972 * The microcode entries are found by the "HWSQ" signature.
1973 */
1974
1975 static const uint8_t hwsq_signature[] = { 'H', 'W', 'S', 'Q' };
1976 const int sz = sizeof(hwsq_signature);
1977 int hwsq_offset;
1978
1979 hwsq_offset = findstr(bios->data, bios->length, hwsq_signature, sz);
1980 if (!hwsq_offset)
1981 return 0;
1982
1983 /* always use entry 0? */
1984 return load_nv17_hwsq_ucode_entry(dev, bios, hwsq_offset + sz, 0);
1985 }
1986
nouveau_bios_embedded_edid(struct drm_device * dev)1987 uint8_t *nouveau_bios_embedded_edid(struct drm_device *dev)
1988 {
1989 struct nouveau_drm *drm = nouveau_drm(dev);
1990 struct nvbios *bios = &drm->vbios;
1991 static const uint8_t edid_sig[] = {
1992 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 };
1993 uint16_t offset = 0;
1994 uint16_t newoffset;
1995 int searchlen = NV_PROM_SIZE;
1996
1997 if (bios->fp.edid)
1998 return bios->fp.edid;
1999
2000 while (searchlen) {
2001 newoffset = findstr(&bios->data[offset], searchlen,
2002 edid_sig, 8);
2003 if (!newoffset)
2004 return NULL;
2005 offset += newoffset;
2006 if (!nv_cksum(&bios->data[offset], EDID1_LEN))
2007 break;
2008
2009 searchlen -= offset;
2010 offset++;
2011 }
2012
2013 NV_INFO(drm, "Found EDID in BIOS\n");
2014
2015 return bios->fp.edid = &bios->data[offset];
2016 }
2017
NVInitVBIOS(struct drm_device * dev)2018 static bool NVInitVBIOS(struct drm_device *dev)
2019 {
2020 struct nouveau_drm *drm = nouveau_drm(dev);
2021 struct nvkm_bios *bios = nvxx_bios(&drm->client.device);
2022 struct nvbios *legacy = &drm->vbios;
2023
2024 memset(legacy, 0, sizeof(struct nvbios));
2025 spin_lock_init(&legacy->lock);
2026 legacy->dev = dev;
2027
2028 legacy->data = bios->data;
2029 legacy->length = bios->size;
2030 legacy->major_version = bios->version.major;
2031 legacy->chip_version = bios->version.chip;
2032 if (bios->bit_offset) {
2033 legacy->type = NVBIOS_BIT;
2034 legacy->offset = bios->bit_offset;
2035 return !parse_bit_structure(legacy, legacy->offset + 6);
2036 } else
2037 if (bios->bmp_offset) {
2038 legacy->type = NVBIOS_BMP;
2039 legacy->offset = bios->bmp_offset;
2040 return !parse_bmp_structure(dev, legacy, legacy->offset);
2041 }
2042
2043 return false;
2044 }
2045
2046 int
nouveau_run_vbios_init(struct drm_device * dev)2047 nouveau_run_vbios_init(struct drm_device *dev)
2048 {
2049 struct nouveau_drm *drm = nouveau_drm(dev);
2050 struct nvbios *bios = &drm->vbios;
2051
2052 /* Reset the BIOS head to 0. */
2053 bios->state.crtchead = 0;
2054
2055 if (bios->major_version < 5) /* BMP only */
2056 load_nv17_hw_sequencer_ucode(dev, bios);
2057
2058 if (bios->execute) {
2059 bios->fp.last_script_invoc = 0;
2060 bios->fp.lvds_init_run = false;
2061 }
2062
2063 return 0;
2064 }
2065
2066 static bool
nouveau_bios_posted(struct drm_device * dev)2067 nouveau_bios_posted(struct drm_device *dev)
2068 {
2069 struct nouveau_drm *drm = nouveau_drm(dev);
2070 unsigned htotal;
2071
2072 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
2073 return true;
2074
2075 htotal = NVReadVgaCrtc(dev, 0, 0x06);
2076 htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x01) << 8;
2077 htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x20) << 4;
2078 htotal |= (NVReadVgaCrtc(dev, 0, 0x25) & 0x01) << 10;
2079 htotal |= (NVReadVgaCrtc(dev, 0, 0x41) & 0x01) << 11;
2080 return (htotal != 0);
2081 }
2082
2083 int
nouveau_bios_init(struct drm_device * dev)2084 nouveau_bios_init(struct drm_device *dev)
2085 {
2086 struct nouveau_drm *drm = nouveau_drm(dev);
2087 struct nvbios *bios = &drm->vbios;
2088 int ret;
2089
2090 /* only relevant for PCI devices */
2091 if (!dev_is_pci(dev->dev))
2092 return 0;
2093
2094 if (!NVInitVBIOS(dev))
2095 return -ENODEV;
2096
2097 ret = parse_dcb_table(dev, bios);
2098 if (ret)
2099 return ret;
2100
2101 if (!bios->major_version) /* we don't run version 0 bios */
2102 return 0;
2103
2104 /* init script execution disabled */
2105 bios->execute = false;
2106
2107 /* ... unless card isn't POSTed already */
2108 if (!nouveau_bios_posted(dev)) {
2109 NV_INFO(drm, "Adaptor not initialised, "
2110 "running VBIOS init tables.\n");
2111 bios->execute = true;
2112 }
2113
2114 ret = nouveau_run_vbios_init(dev);
2115 if (ret)
2116 return ret;
2117
2118 /* feature_byte on BMP is poor, but init always sets CR4B */
2119 if (bios->major_version < 5)
2120 bios->is_mobile = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_4B) & 0x40;
2121
2122 /* all BIT systems need p_f_m_t for digital_min_front_porch */
2123 if (bios->is_mobile || bios->major_version >= 5)
2124 ret = parse_fp_mode_table(dev, bios);
2125
2126 /* allow subsequent scripts to execute */
2127 bios->execute = true;
2128
2129 return 0;
2130 }
2131
2132 void
nouveau_bios_takedown(struct drm_device * dev)2133 nouveau_bios_takedown(struct drm_device *dev)
2134 {
2135 }
2136