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