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