1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *
4  * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200 and G400
5  *
6  * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
7  *
8  * Portions Copyright (c) 2001 Matrox Graphics Inc.
9  *
10  * Version: 1.65 2002/08/14
11  *
12  * MTRR stuff: 1998 Tom Rini <trini@kernel.crashing.org>
13  *
14  * Contributors: "menion?" <menion@mindless.com>
15  *                     Betatesting, fixes, ideas
16  *
17  *               "Kurt Garloff" <garloff@suse.de>
18  *                     Betatesting, fixes, ideas, videomodes, videomodes timmings
19  *
20  *               "Tom Rini" <trini@kernel.crashing.org>
21  *                     MTRR stuff, PPC cleanups, betatesting, fixes, ideas
22  *
23  *               "Bibek Sahu" <scorpio@dodds.net>
24  *                     Access device through readb|w|l and write b|w|l
25  *                     Extensive debugging stuff
26  *
27  *               "Daniel Haun" <haund@usa.net>
28  *                     Testing, hardware cursor fixes
29  *
30  *               "Scott Wood" <sawst46+@pitt.edu>
31  *                     Fixes
32  *
33  *               "Gerd Knorr" <kraxel@goldbach.isdn.cs.tu-berlin.de>
34  *                     Betatesting
35  *
36  *               "Kelly French" <targon@hazmat.com>
37  *               "Fernando Herrera" <fherrera@eurielec.etsit.upm.es>
38  *                     Betatesting, bug reporting
39  *
40  *               "Pablo Bianucci" <pbian@pccp.com.ar>
41  *                     Fixes, ideas, betatesting
42  *
43  *               "Inaky Perez Gonzalez" <inaky@peloncho.fis.ucm.es>
44  *                     Fixes, enhandcements, ideas, betatesting
45  *
46  *               "Ryuichi Oikawa" <roikawa@rr.iiij4u.or.jp>
47  *                     PPC betatesting, PPC support, backward compatibility
48  *
49  *               "Paul Womar" <Paul@pwomar.demon.co.uk>
50  *               "Owen Waller" <O.Waller@ee.qub.ac.uk>
51  *                     PPC betatesting
52  *
53  *               "Thomas Pornin" <pornin@bolet.ens.fr>
54  *                     Alpha betatesting
55  *
56  *               "Pieter van Leuven" <pvl@iae.nl>
57  *               "Ulf Jaenicke-Roessler" <ujr@physik.phy.tu-dresden.de>
58  *                     G100 testing
59  *
60  *               "H. Peter Arvin" <hpa@transmeta.com>
61  *                     Ideas
62  *
63  *               "Cort Dougan" <cort@cs.nmt.edu>
64  *                     CHRP fixes and PReP cleanup
65  *
66  *               "Mark Vojkovich" <mvojkovi@ucsd.edu>
67  *                     G400 support
68  *
69  *               "Samuel Hocevar" <sam@via.ecp.fr>
70  *                     Fixes
71  *
72  *               "Anton Altaparmakov" <AntonA@bigfoot.com>
73  *                     G400 MAX/non-MAX distinction
74  *
75  *               "Ken Aaker" <kdaaker@rchland.vnet.ibm.com>
76  *                     memtype extension (needed for GXT130P RS/6000 adapter)
77  *
78  *               "Uns Lider" <unslider@miranda.org>
79  *                     G100 PLNWT fixes
80  *
81  *               "Denis Zaitsev" <zzz@cd-club.ru>
82  *                     Fixes
83  *
84  *               "Mike Pieper" <mike@pieper-family.de>
85  *                     TVOut enhandcements, V4L2 control interface.
86  *
87  *               "Diego Biurrun" <diego@biurrun.de>
88  *                     DFP testing
89  *
90  * (following author is not in any relation with this code, but his code
91  *  is included in this driver)
92  *
93  * Based on framebuffer driver for VBE 2.0 compliant graphic boards
94  *     (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
95  *
96  * (following author is not in any relation with this code, but his ideas
97  *  were used when writing this driver)
98  *
99  *		 FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk>
100  *
101  */
102 
103 #include <linux/aperture.h>
104 #include <linux/version.h>
105 
106 #include "matroxfb_base.h"
107 #include "matroxfb_misc.h"
108 #include "matroxfb_accel.h"
109 #include "matroxfb_DAC1064.h"
110 #include "matroxfb_Ti3026.h"
111 #include "matroxfb_maven.h"
112 #include "matroxfb_crtc2.h"
113 #include "matroxfb_g450.h"
114 #include <linux/matroxfb.h>
115 #include <linux/interrupt.h>
116 #include <linux/nvram.h>
117 #include <linux/slab.h>
118 #include <linux/uaccess.h>
119 
120 #ifdef CONFIG_PPC_PMAC
121 #include <asm/machdep.h>
122 static int default_vmode = VMODE_NVRAM;
123 static int default_cmode = CMODE_NVRAM;
124 #endif
125 
126 static void matroxfb_unregister_device(struct matrox_fb_info* minfo);
127 
128 /* --------------------------------------------------------------------- */
129 
130 /*
131  * card parameters
132  */
133 
134 /* --------------------------------------------------------------------- */
135 
136 static struct fb_var_screeninfo vesafb_defined = {
137 	640,480,640,480,/* W,H, W, H (virtual) load xres,xres_virtual*/
138 	0,0,		/* virtual -> visible no offset */
139 	8,		/* depth -> load bits_per_pixel */
140 	0,		/* greyscale ? */
141 	{0,0,0},	/* R */
142 	{0,0,0},	/* G */
143 	{0,0,0},	/* B */
144 	{0,0,0},	/* transparency */
145 	0,		/* standard pixel format */
146 	FB_ACTIVATE_NOW,
147 	-1,-1,
148 	FB_ACCELF_TEXT,	/* accel flags */
149 	39721L,48L,16L,33L,10L,
150 	96L,2L,~0,	/* No sync info */
151 	FB_VMODE_NONINTERLACED,
152 };
153 
154 
155 
156 /* --------------------------------------------------------------------- */
update_crtc2(struct matrox_fb_info * minfo,unsigned int pos)157 static void update_crtc2(struct matrox_fb_info *minfo, unsigned int pos)
158 {
159 	struct matroxfb_dh_fb_info *info = minfo->crtc2.info;
160 
161 	/* Make sure that displays are compatible */
162 	if (info && (info->fbcon.var.bits_per_pixel == minfo->fbcon.var.bits_per_pixel)
163 		 && (info->fbcon.var.xres_virtual == minfo->fbcon.var.xres_virtual)
164 		 && (info->fbcon.var.green.length == minfo->fbcon.var.green.length)
165 		 ) {
166 		switch (minfo->fbcon.var.bits_per_pixel) {
167 			case 16:
168 			case 32:
169 				pos = pos * 8;
170 				if (info->interlaced) {
171 					mga_outl(0x3C2C, pos);
172 					mga_outl(0x3C28, pos + minfo->fbcon.var.xres_virtual * minfo->fbcon.var.bits_per_pixel / 8);
173 				} else {
174 					mga_outl(0x3C28, pos);
175 				}
176 				break;
177 		}
178 	}
179 }
180 
matroxfb_crtc1_panpos(struct matrox_fb_info * minfo)181 static void matroxfb_crtc1_panpos(struct matrox_fb_info *minfo)
182 {
183 	if (minfo->crtc1.panpos >= 0) {
184 		unsigned long flags;
185 		int panpos;
186 
187 		matroxfb_DAC_lock_irqsave(flags);
188 		panpos = minfo->crtc1.panpos;
189 		if (panpos >= 0) {
190 			unsigned int extvga_reg;
191 
192 			minfo->crtc1.panpos = -1; /* No update pending anymore */
193 			extvga_reg = mga_inb(M_EXTVGA_INDEX);
194 			mga_setr(M_EXTVGA_INDEX, 0x00, panpos);
195 			if (extvga_reg != 0x00) {
196 				mga_outb(M_EXTVGA_INDEX, extvga_reg);
197 			}
198 		}
199 		matroxfb_DAC_unlock_irqrestore(flags);
200 	}
201 }
202 
matrox_irq(int irq,void * dev_id)203 static irqreturn_t matrox_irq(int irq, void *dev_id)
204 {
205 	u_int32_t status;
206 	int handled = 0;
207 	struct matrox_fb_info *minfo = dev_id;
208 
209 	status = mga_inl(M_STATUS);
210 
211 	if (status & 0x20) {
212 		mga_outl(M_ICLEAR, 0x20);
213 		minfo->crtc1.vsync.cnt++;
214 		matroxfb_crtc1_panpos(minfo);
215 		wake_up_interruptible(&minfo->crtc1.vsync.wait);
216 		handled = 1;
217 	}
218 	if (status & 0x200) {
219 		mga_outl(M_ICLEAR, 0x200);
220 		minfo->crtc2.vsync.cnt++;
221 		wake_up_interruptible(&minfo->crtc2.vsync.wait);
222 		handled = 1;
223 	}
224 	return IRQ_RETVAL(handled);
225 }
226 
matroxfb_enable_irq(struct matrox_fb_info * minfo,int reenable)227 int matroxfb_enable_irq(struct matrox_fb_info *minfo, int reenable)
228 {
229 	u_int32_t bm;
230 
231 	if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400)
232 		bm = 0x220;
233 	else
234 		bm = 0x020;
235 
236 	if (!test_and_set_bit(0, &minfo->irq_flags)) {
237 		if (request_irq(minfo->pcidev->irq, matrox_irq,
238 				IRQF_SHARED, "matroxfb", minfo)) {
239 			clear_bit(0, &minfo->irq_flags);
240 			return -EINVAL;
241 		}
242 		/* Clear any pending field interrupts */
243 		mga_outl(M_ICLEAR, bm);
244 		mga_outl(M_IEN, mga_inl(M_IEN) | bm);
245 	} else if (reenable) {
246 		u_int32_t ien;
247 
248 		ien = mga_inl(M_IEN);
249 		if ((ien & bm) != bm) {
250 			printk(KERN_DEBUG "matroxfb: someone disabled IRQ [%08X]\n", ien);
251 			mga_outl(M_IEN, ien | bm);
252 		}
253 	}
254 	return 0;
255 }
256 
matroxfb_disable_irq(struct matrox_fb_info * minfo)257 static void matroxfb_disable_irq(struct matrox_fb_info *minfo)
258 {
259 	if (test_and_clear_bit(0, &minfo->irq_flags)) {
260 		/* Flush pending pan-at-vbl request... */
261 		matroxfb_crtc1_panpos(minfo);
262 		if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400)
263 			mga_outl(M_IEN, mga_inl(M_IEN) & ~0x220);
264 		else
265 			mga_outl(M_IEN, mga_inl(M_IEN) & ~0x20);
266 		free_irq(minfo->pcidev->irq, minfo);
267 	}
268 }
269 
matroxfb_wait_for_sync(struct matrox_fb_info * minfo,u_int32_t crtc)270 int matroxfb_wait_for_sync(struct matrox_fb_info *minfo, u_int32_t crtc)
271 {
272 	struct matrox_vsync *vs;
273 	unsigned int cnt;
274 	int ret;
275 
276 	switch (crtc) {
277 		case 0:
278 			vs = &minfo->crtc1.vsync;
279 			break;
280 		case 1:
281 			if (minfo->devflags.accelerator != FB_ACCEL_MATROX_MGAG400) {
282 				return -ENODEV;
283 			}
284 			vs = &minfo->crtc2.vsync;
285 			break;
286 		default:
287 			return -ENODEV;
288 	}
289 	ret = matroxfb_enable_irq(minfo, 0);
290 	if (ret) {
291 		return ret;
292 	}
293 
294 	cnt = vs->cnt;
295 	ret = wait_event_interruptible_timeout(vs->wait, cnt != vs->cnt, HZ/10);
296 	if (ret < 0) {
297 		return ret;
298 	}
299 	if (ret == 0) {
300 		matroxfb_enable_irq(minfo, 1);
301 		return -ETIMEDOUT;
302 	}
303 	return 0;
304 }
305 
306 /* --------------------------------------------------------------------- */
307 
matrox_pan_var(struct matrox_fb_info * minfo,struct fb_var_screeninfo * var)308 static void matrox_pan_var(struct matrox_fb_info *minfo,
309 			   struct fb_var_screeninfo *var)
310 {
311 	unsigned int pos;
312 	unsigned short p0, p1, p2;
313 	unsigned int p3;
314 	int vbl;
315 	unsigned long flags;
316 
317 	CRITFLAGS
318 
319 	DBG(__func__)
320 
321 	if (minfo->dead)
322 		return;
323 
324 	minfo->fbcon.var.xoffset = var->xoffset;
325 	minfo->fbcon.var.yoffset = var->yoffset;
326 	pos = (minfo->fbcon.var.yoffset * minfo->fbcon.var.xres_virtual + minfo->fbcon.var.xoffset) * minfo->curr.final_bppShift / 32;
327 	pos += minfo->curr.ydstorg.chunks;
328 	p0 = minfo->hw.CRTC[0x0D] = pos & 0xFF;
329 	p1 = minfo->hw.CRTC[0x0C] = (pos & 0xFF00) >> 8;
330 	p2 = minfo->hw.CRTCEXT[0] = (minfo->hw.CRTCEXT[0] & 0xB0) | ((pos >> 16) & 0x0F) | ((pos >> 14) & 0x40);
331 	p3 = minfo->hw.CRTCEXT[8] = pos >> 21;
332 
333 	/* FB_ACTIVATE_VBL and we can acquire interrupts? Honor FB_ACTIVATE_VBL then... */
334 	vbl = (var->activate & FB_ACTIVATE_VBL) && (matroxfb_enable_irq(minfo, 0) == 0);
335 
336 	CRITBEGIN
337 
338 	matroxfb_DAC_lock_irqsave(flags);
339 	mga_setr(M_CRTC_INDEX, 0x0D, p0);
340 	mga_setr(M_CRTC_INDEX, 0x0C, p1);
341 	if (minfo->devflags.support32MB)
342 		mga_setr(M_EXTVGA_INDEX, 0x08, p3);
343 	if (vbl) {
344 		minfo->crtc1.panpos = p2;
345 	} else {
346 		/* Abort any pending change */
347 		minfo->crtc1.panpos = -1;
348 		mga_setr(M_EXTVGA_INDEX, 0x00, p2);
349 	}
350 	matroxfb_DAC_unlock_irqrestore(flags);
351 
352 	update_crtc2(minfo, pos);
353 
354 	CRITEND
355 }
356 
matroxfb_remove(struct matrox_fb_info * minfo,int dummy)357 static void matroxfb_remove(struct matrox_fb_info *minfo, int dummy)
358 {
359 	/* Currently we are holding big kernel lock on all dead & usecount updates.
360 	 * Destroy everything after all users release it. Especially do not unregister
361 	 * framebuffer and iounmap memory, neither fbmem nor fbcon-cfb* does not check
362 	 * for device unplugged when in use.
363 	 * In future we should point mmio.vbase & video.vbase somewhere where we can
364 	 * write data without causing too much damage...
365 	 */
366 
367 	minfo->dead = 1;
368 	if (minfo->usecount) {
369 		/* destroy it later */
370 		return;
371 	}
372 	matroxfb_unregister_device(minfo);
373 	unregister_framebuffer(&minfo->fbcon);
374 	matroxfb_g450_shutdown(minfo);
375 	arch_phys_wc_del(minfo->wc_cookie);
376 	iounmap(minfo->mmio.vbase.vaddr);
377 	iounmap(minfo->video.vbase.vaddr);
378 	release_mem_region(minfo->video.base, minfo->video.len_maximum);
379 	release_mem_region(minfo->mmio.base, 16384);
380 	kfree(minfo);
381 }
382 
383 	/*
384 	 * Open/Release the frame buffer device
385 	 */
386 
matroxfb_open(struct fb_info * info,int user)387 static int matroxfb_open(struct fb_info *info, int user)
388 {
389 	struct matrox_fb_info *minfo = info2minfo(info);
390 
391 	DBG_LOOP(__func__)
392 
393 	if (minfo->dead) {
394 		return -ENXIO;
395 	}
396 	minfo->usecount++;
397 	if (user) {
398 		minfo->userusecount++;
399 	}
400 	return(0);
401 }
402 
matroxfb_release(struct fb_info * info,int user)403 static int matroxfb_release(struct fb_info *info, int user)
404 {
405 	struct matrox_fb_info *minfo = info2minfo(info);
406 
407 	DBG_LOOP(__func__)
408 
409 	if (user) {
410 		if (0 == --minfo->userusecount) {
411 			matroxfb_disable_irq(minfo);
412 		}
413 	}
414 	if (!(--minfo->usecount) && minfo->dead) {
415 		matroxfb_remove(minfo, 0);
416 	}
417 	return(0);
418 }
419 
matroxfb_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)420 static int matroxfb_pan_display(struct fb_var_screeninfo *var,
421 		struct fb_info* info) {
422 	struct matrox_fb_info *minfo = info2minfo(info);
423 
424 	DBG(__func__)
425 
426 	matrox_pan_var(minfo, var);
427 	return 0;
428 }
429 
matroxfb_get_final_bppShift(const struct matrox_fb_info * minfo,int bpp)430 static int matroxfb_get_final_bppShift(const struct matrox_fb_info *minfo,
431 				       int bpp)
432 {
433 	int bppshft2;
434 
435 	DBG(__func__)
436 
437 	bppshft2 = bpp;
438 	if (!bppshft2) {
439 		return 8;
440 	}
441 	if (isInterleave(minfo))
442 		bppshft2 >>= 1;
443 	if (minfo->devflags.video64bits)
444 		bppshft2 >>= 1;
445 	return bppshft2;
446 }
447 
matroxfb_test_and_set_rounding(const struct matrox_fb_info * minfo,int xres,int bpp)448 static int matroxfb_test_and_set_rounding(const struct matrox_fb_info *minfo,
449 					  int xres, int bpp)
450 {
451 	int over;
452 	int rounding;
453 
454 	DBG(__func__)
455 
456 	switch (bpp) {
457 		case 0:		return xres;
458 		case 4:		rounding = 128;
459 				break;
460 		case 8:		rounding = 64;	/* doc says 64; 32 is OK for G400 */
461 				break;
462 		case 16:	rounding = 32;
463 				break;
464 		case 24:	rounding = 64;	/* doc says 64; 32 is OK for G400 */
465 				break;
466 		default:	rounding = 16;
467 				/* on G400, 16 really does not work */
468 				if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400)
469 					rounding = 32;
470 				break;
471 	}
472 	if (isInterleave(minfo)) {
473 		rounding *= 2;
474 	}
475 	over = xres % rounding;
476 	if (over)
477 		xres += rounding-over;
478 	return xres;
479 }
480 
matroxfb_pitch_adjust(const struct matrox_fb_info * minfo,int xres,int bpp)481 static int matroxfb_pitch_adjust(const struct matrox_fb_info *minfo, int xres,
482 				 int bpp)
483 {
484 	const int* width;
485 	int xres_new;
486 
487 	DBG(__func__)
488 
489 	if (!bpp) return xres;
490 
491 	width = minfo->capable.vxres;
492 
493 	if (minfo->devflags.precise_width) {
494 		while (*width) {
495 			if ((*width >= xres) && (matroxfb_test_and_set_rounding(minfo, *width, bpp) == *width)) {
496 				break;
497 			}
498 			width++;
499 		}
500 		xres_new = *width;
501 	} else {
502 		xres_new = matroxfb_test_and_set_rounding(minfo, xres, bpp);
503 	}
504 	return xres_new;
505 }
506 
matroxfb_get_cmap_len(struct fb_var_screeninfo * var)507 static int matroxfb_get_cmap_len(struct fb_var_screeninfo *var) {
508 
509 	DBG(__func__)
510 
511 	switch (var->bits_per_pixel) {
512 		case 4:
513 			return 16;	/* pseudocolor... 16 entries HW palette */
514 		case 8:
515 			return 256;	/* pseudocolor... 256 entries HW palette */
516 		case 16:
517 			return 16;	/* directcolor... 16 entries SW palette */
518 					/* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
519 		case 24:
520 			return 16;	/* directcolor... 16 entries SW palette */
521 					/* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
522 		case 32:
523 			return 16;	/* directcolor... 16 entries SW palette */
524 					/* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
525 	}
526 	return 16;	/* return something reasonable... or panic()? */
527 }
528 
matroxfb_decode_var(const struct matrox_fb_info * minfo,struct fb_var_screeninfo * var,int * visual,int * video_cmap_len,unsigned int * ydstorg)529 static int matroxfb_decode_var(const struct matrox_fb_info *minfo,
530 			       struct fb_var_screeninfo *var, int *visual,
531 			       int *video_cmap_len, unsigned int* ydstorg)
532 {
533 	struct RGBT {
534 		unsigned char bpp;
535 		struct {
536 			unsigned char offset,
537 				      length;
538 		} red,
539 		  green,
540 		  blue,
541 		  transp;
542 		signed char visual;
543 	};
544 	static const struct RGBT table[]= {
545 		{ 8,{ 0,8},{0,8},{0,8},{ 0,0},MX_VISUAL_PSEUDOCOLOR},
546 		{15,{10,5},{5,5},{0,5},{15,1},MX_VISUAL_DIRECTCOLOR},
547 		{16,{11,5},{5,6},{0,5},{ 0,0},MX_VISUAL_DIRECTCOLOR},
548 		{24,{16,8},{8,8},{0,8},{ 0,0},MX_VISUAL_DIRECTCOLOR},
549 		{32,{16,8},{8,8},{0,8},{24,8},MX_VISUAL_DIRECTCOLOR}
550 	};
551 	struct RGBT const *rgbt;
552 	unsigned int bpp = var->bits_per_pixel;
553 	unsigned int vramlen;
554 	unsigned int memlen;
555 
556 	DBG(__func__)
557 
558 	switch (bpp) {
559 		case 4:	 if (!minfo->capable.cfb4) return -EINVAL;
560 			 break;
561 		case 8:	 break;
562 		case 16: break;
563 		case 24: break;
564 		case 32: break;
565 		default: return -EINVAL;
566 	}
567 	*ydstorg = 0;
568 	vramlen = minfo->video.len_usable;
569 	if (var->yres_virtual < var->yres)
570 		var->yres_virtual = var->yres;
571 	if (var->xres_virtual < var->xres)
572 		var->xres_virtual = var->xres;
573 
574 	var->xres_virtual = matroxfb_pitch_adjust(minfo, var->xres_virtual, bpp);
575 	memlen = var->xres_virtual * bpp * var->yres_virtual / 8;
576 	if (memlen > vramlen) {
577 		var->yres_virtual = vramlen * 8 / (var->xres_virtual * bpp);
578 		memlen = var->xres_virtual * bpp * var->yres_virtual / 8;
579 	}
580 	/* There is hardware bug that no line can cross 4MB boundary */
581 	/* give up for CFB24, it is impossible to easy workaround it */
582 	/* for other try to do something */
583 	if (!minfo->capable.cross4MB && (memlen > 0x400000)) {
584 		if (bpp == 24) {
585 			/* sorry */
586 		} else {
587 			unsigned int linelen;
588 			unsigned int m1 = linelen = var->xres_virtual * bpp / 8;
589 			unsigned int m2 = PAGE_SIZE;	/* or 128 if you do not need PAGE ALIGNED address */
590 			unsigned int max_yres;
591 
592 			while (m1) {
593 				while (m2 >= m1) m2 -= m1;
594 				swap(m1, m2);
595 			}
596 			m2 = linelen * PAGE_SIZE / m2;
597 			*ydstorg = m2 = 0x400000 % m2;
598 			max_yres = (vramlen - m2) / linelen;
599 			if (var->yres_virtual > max_yres)
600 				var->yres_virtual = max_yres;
601 		}
602 	}
603 	/* YDSTLEN contains only signed 16bit value */
604 	if (var->yres_virtual > 32767)
605 		var->yres_virtual = 32767;
606 	/* we must round yres/xres down, we already rounded y/xres_virtual up
607 	   if it was possible. We should return -EINVAL, but I disagree */
608 	if (var->yres_virtual < var->yres)
609 		var->yres = var->yres_virtual;
610 	if (var->xres_virtual < var->xres)
611 		var->xres = var->xres_virtual;
612 	if (var->xoffset + var->xres > var->xres_virtual)
613 		var->xoffset = var->xres_virtual - var->xres;
614 	if (var->yoffset + var->yres > var->yres_virtual)
615 		var->yoffset = var->yres_virtual - var->yres;
616 
617 	if (bpp == 16 && var->green.length == 5) {
618 		bpp--; /* an artificial value - 15 */
619 	}
620 
621 	for (rgbt = table; rgbt->bpp < bpp; rgbt++);
622 #define	SETCLR(clr)\
623 	var->clr.offset = rgbt->clr.offset;\
624 	var->clr.length = rgbt->clr.length
625 	SETCLR(red);
626 	SETCLR(green);
627 	SETCLR(blue);
628 	SETCLR(transp);
629 #undef	SETCLR
630 	*visual = rgbt->visual;
631 
632 	if (bpp > 8)
633 		dprintk("matroxfb: truecolor: "
634 			"size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
635 			var->transp.length, var->red.length, var->green.length, var->blue.length,
636 			var->transp.offset, var->red.offset, var->green.offset, var->blue.offset);
637 
638 	*video_cmap_len = matroxfb_get_cmap_len(var);
639 	dprintk(KERN_INFO "requested %d*%d/%dbpp (%d*%d)\n", var->xres, var->yres, var->bits_per_pixel,
640 				var->xres_virtual, var->yres_virtual);
641 	return 0;
642 }
643 
matroxfb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * fb_info)644 static int matroxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
645 			      unsigned blue, unsigned transp,
646 			      struct fb_info *fb_info)
647 {
648 	struct matrox_fb_info* minfo = container_of(fb_info, struct matrox_fb_info, fbcon);
649 
650 	DBG(__func__)
651 
652 	/*
653 	 *  Set a single color register. The values supplied are
654 	 *  already rounded down to the hardware's capabilities
655 	 *  (according to the entries in the `var' structure). Return
656 	 *  != 0 for invalid regno.
657 	 */
658 
659 	if (regno >= minfo->curr.cmap_len)
660 		return 1;
661 
662 	if (minfo->fbcon.var.grayscale) {
663 		/* gray = 0.30*R + 0.59*G + 0.11*B */
664 		red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
665 	}
666 
667 	red = CNVT_TOHW(red, minfo->fbcon.var.red.length);
668 	green = CNVT_TOHW(green, minfo->fbcon.var.green.length);
669 	blue = CNVT_TOHW(blue, minfo->fbcon.var.blue.length);
670 	transp = CNVT_TOHW(transp, minfo->fbcon.var.transp.length);
671 
672 	switch (minfo->fbcon.var.bits_per_pixel) {
673 	case 4:
674 	case 8:
675 		mga_outb(M_DAC_REG, regno);
676 		mga_outb(M_DAC_VAL, red);
677 		mga_outb(M_DAC_VAL, green);
678 		mga_outb(M_DAC_VAL, blue);
679 		break;
680 	case 16:
681 		if (regno >= 16)
682 			break;
683 		{
684 			u_int16_t col =
685 				(red << minfo->fbcon.var.red.offset)     |
686 				(green << minfo->fbcon.var.green.offset) |
687 				(blue << minfo->fbcon.var.blue.offset)   |
688 				(transp << minfo->fbcon.var.transp.offset); /* for 1:5:5:5 */
689 			minfo->cmap[regno] = col | (col << 16);
690 		}
691 		break;
692 	case 24:
693 	case 32:
694 		if (regno >= 16)
695 			break;
696 		minfo->cmap[regno] =
697 			(red   << minfo->fbcon.var.red.offset)   |
698 			(green << minfo->fbcon.var.green.offset) |
699 			(blue  << minfo->fbcon.var.blue.offset)  |
700 			(transp << minfo->fbcon.var.transp.offset);	/* 8:8:8:8 */
701 		break;
702 	}
703 	return 0;
704 }
705 
matroxfb_init_fix(struct matrox_fb_info * minfo)706 static void matroxfb_init_fix(struct matrox_fb_info *minfo)
707 {
708 	struct fb_fix_screeninfo *fix = &minfo->fbcon.fix;
709 	DBG(__func__)
710 
711 	strcpy(fix->id,"MATROX");
712 
713 	fix->xpanstep = 8;	/* 8 for 8bpp, 4 for 16bpp, 2 for 32bpp */
714 	fix->ypanstep = 1;
715 	fix->ywrapstep = 0;
716 	fix->mmio_start = minfo->mmio.base;
717 	fix->mmio_len = minfo->mmio.len;
718 	fix->accel = minfo->devflags.accelerator;
719 }
720 
matroxfb_update_fix(struct matrox_fb_info * minfo)721 static void matroxfb_update_fix(struct matrox_fb_info *minfo)
722 {
723 	struct fb_fix_screeninfo *fix = &minfo->fbcon.fix;
724 	DBG(__func__)
725 
726 	mutex_lock(&minfo->fbcon.mm_lock);
727 	fix->smem_start = minfo->video.base + minfo->curr.ydstorg.bytes;
728 	fix->smem_len = minfo->video.len_usable - minfo->curr.ydstorg.bytes;
729 	mutex_unlock(&minfo->fbcon.mm_lock);
730 }
731 
matroxfb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)732 static int matroxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
733 {
734 	int err;
735 	int visual;
736 	int cmap_len;
737 	unsigned int ydstorg;
738 	struct matrox_fb_info *minfo = info2minfo(info);
739 
740 	if (minfo->dead) {
741 		return -ENXIO;
742 	}
743 	if ((err = matroxfb_decode_var(minfo, var, &visual, &cmap_len, &ydstorg)) != 0)
744 		return err;
745 	return 0;
746 }
747 
matroxfb_set_par(struct fb_info * info)748 static int matroxfb_set_par(struct fb_info *info)
749 {
750 	int err;
751 	int visual;
752 	int cmap_len;
753 	unsigned int ydstorg;
754 	struct fb_var_screeninfo *var;
755 	struct matrox_fb_info *minfo = info2minfo(info);
756 
757 	DBG(__func__)
758 
759 	if (minfo->dead) {
760 		return -ENXIO;
761 	}
762 
763 	var = &info->var;
764 	if ((err = matroxfb_decode_var(minfo, var, &visual, &cmap_len, &ydstorg)) != 0)
765 		return err;
766 	minfo->fbcon.screen_base = vaddr_va(minfo->video.vbase) + ydstorg;
767 	matroxfb_update_fix(minfo);
768 	minfo->fbcon.fix.visual = visual;
769 	minfo->fbcon.fix.type = FB_TYPE_PACKED_PIXELS;
770 	minfo->fbcon.fix.type_aux = 0;
771 	minfo->fbcon.fix.line_length = (var->xres_virtual * var->bits_per_pixel) >> 3;
772 	{
773 		unsigned int pos;
774 
775 		minfo->curr.cmap_len = cmap_len;
776 		ydstorg += minfo->devflags.ydstorg;
777 		minfo->curr.ydstorg.bytes = ydstorg;
778 		minfo->curr.ydstorg.chunks = ydstorg >> (isInterleave(minfo) ? 3 : 2);
779 		if (var->bits_per_pixel == 4)
780 			minfo->curr.ydstorg.pixels = ydstorg;
781 		else
782 			minfo->curr.ydstorg.pixels = (ydstorg * 8) / var->bits_per_pixel;
783 		minfo->curr.final_bppShift = matroxfb_get_final_bppShift(minfo, var->bits_per_pixel);
784 		{	struct my_timming mt;
785 			struct matrox_hw_state* hw;
786 			int out;
787 
788 			matroxfb_var2my(var, &mt);
789 			mt.crtc = MATROXFB_SRC_CRTC1;
790 			/* CRTC1 delays */
791 			switch (var->bits_per_pixel) {
792 				case  0:	mt.delay = 31 + 0; break;
793 				case 16:	mt.delay = 21 + 8; break;
794 				case 24:	mt.delay = 17 + 8; break;
795 				case 32:	mt.delay = 16 + 8; break;
796 				default:	mt.delay = 31 + 8; break;
797 			}
798 
799 			hw = &minfo->hw;
800 
801 			down_read(&minfo->altout.lock);
802 			for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
803 				if (minfo->outputs[out].src == MATROXFB_SRC_CRTC1 &&
804 				    minfo->outputs[out].output->compute) {
805 					minfo->outputs[out].output->compute(minfo->outputs[out].data, &mt);
806 				}
807 			}
808 			up_read(&minfo->altout.lock);
809 			minfo->crtc1.pixclock = mt.pixclock;
810 			minfo->crtc1.mnp = mt.mnp;
811 			minfo->hw_switch->init(minfo, &mt);
812 			pos = (var->yoffset * var->xres_virtual + var->xoffset) * minfo->curr.final_bppShift / 32;
813 			pos += minfo->curr.ydstorg.chunks;
814 
815 			hw->CRTC[0x0D] = pos & 0xFF;
816 			hw->CRTC[0x0C] = (pos & 0xFF00) >> 8;
817 			hw->CRTCEXT[0] = (hw->CRTCEXT[0] & 0xF0) | ((pos >> 16) & 0x0F) | ((pos >> 14) & 0x40);
818 			hw->CRTCEXT[8] = pos >> 21;
819 			minfo->hw_switch->restore(minfo);
820 			update_crtc2(minfo, pos);
821 			down_read(&minfo->altout.lock);
822 			for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
823 				if (minfo->outputs[out].src == MATROXFB_SRC_CRTC1 &&
824 				    minfo->outputs[out].output->program) {
825 					minfo->outputs[out].output->program(minfo->outputs[out].data);
826 				}
827 			}
828 			for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
829 				if (minfo->outputs[out].src == MATROXFB_SRC_CRTC1 &&
830 				    minfo->outputs[out].output->start) {
831 					minfo->outputs[out].output->start(minfo->outputs[out].data);
832 				}
833 			}
834 			up_read(&minfo->altout.lock);
835 			matrox_cfbX_init(minfo);
836 		}
837 	}
838 	minfo->initialized = 1;
839 	return 0;
840 }
841 
matroxfb_get_vblank(struct matrox_fb_info * minfo,struct fb_vblank * vblank)842 static int matroxfb_get_vblank(struct matrox_fb_info *minfo,
843 			       struct fb_vblank *vblank)
844 {
845 	unsigned int sts1;
846 
847 	matroxfb_enable_irq(minfo, 0);
848 	memset(vblank, 0, sizeof(*vblank));
849 	vblank->flags = FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VSYNC |
850 			FB_VBLANK_HAVE_VBLANK | FB_VBLANK_HAVE_HBLANK;
851 	sts1 = mga_inb(M_INSTS1);
852 	vblank->vcount = mga_inl(M_VCOUNT);
853 	/* BTW, on my PIII/450 with G400, reading M_INSTS1
854 	   byte makes this call about 12% slower (1.70 vs. 2.05 us
855 	   per ioctl()) */
856 	if (sts1 & 1)
857 		vblank->flags |= FB_VBLANK_HBLANKING;
858 	if (sts1 & 8)
859 		vblank->flags |= FB_VBLANK_VSYNCING;
860 	if (vblank->vcount >= minfo->fbcon.var.yres)
861 		vblank->flags |= FB_VBLANK_VBLANKING;
862 	if (test_bit(0, &minfo->irq_flags)) {
863 		vblank->flags |= FB_VBLANK_HAVE_COUNT;
864 		/* Only one writer, aligned int value...
865 		   it should work without lock and without atomic_t */
866 		vblank->count = minfo->crtc1.vsync.cnt;
867 	}
868 	return 0;
869 }
870 
871 static struct matrox_altout panellink_output = {
872 	.name	 = "Panellink output",
873 };
874 
matroxfb_ioctl(struct fb_info * info,unsigned int cmd,unsigned long arg)875 static int matroxfb_ioctl(struct fb_info *info,
876 			  unsigned int cmd, unsigned long arg)
877 {
878 	void __user *argp = (void __user *)arg;
879 	struct matrox_fb_info *minfo = info2minfo(info);
880 
881 	DBG(__func__)
882 
883 	if (minfo->dead) {
884 		return -ENXIO;
885 	}
886 
887 	switch (cmd) {
888 		case FBIOGET_VBLANK:
889 			{
890 				struct fb_vblank vblank;
891 				int err;
892 
893 				err = matroxfb_get_vblank(minfo, &vblank);
894 				if (err)
895 					return err;
896 				if (copy_to_user(argp, &vblank, sizeof(vblank)))
897 					return -EFAULT;
898 				return 0;
899 			}
900 		case FBIO_WAITFORVSYNC:
901 			{
902 				u_int32_t crt;
903 
904 				if (get_user(crt, (u_int32_t __user *)arg))
905 					return -EFAULT;
906 
907 				return matroxfb_wait_for_sync(minfo, crt);
908 			}
909 		case MATROXFB_SET_OUTPUT_MODE:
910 			{
911 				struct matroxioc_output_mode mom;
912 				struct matrox_altout *oproc;
913 				int val;
914 
915 				if (copy_from_user(&mom, argp, sizeof(mom)))
916 					return -EFAULT;
917 				if (mom.output >= MATROXFB_MAX_OUTPUTS)
918 					return -ENXIO;
919 				down_read(&minfo->altout.lock);
920 				oproc = minfo->outputs[mom.output].output;
921 				if (!oproc) {
922 					val = -ENXIO;
923 				} else if (!oproc->verifymode) {
924 					if (mom.mode == MATROXFB_OUTPUT_MODE_MONITOR) {
925 						val = 0;
926 					} else {
927 						val = -EINVAL;
928 					}
929 				} else {
930 					val = oproc->verifymode(minfo->outputs[mom.output].data, mom.mode);
931 				}
932 				if (!val) {
933 					if (minfo->outputs[mom.output].mode != mom.mode) {
934 						minfo->outputs[mom.output].mode = mom.mode;
935 						val = 1;
936 					}
937 				}
938 				up_read(&minfo->altout.lock);
939 				if (val != 1)
940 					return val;
941 				switch (minfo->outputs[mom.output].src) {
942 					case MATROXFB_SRC_CRTC1:
943 						matroxfb_set_par(info);
944 						break;
945 					case MATROXFB_SRC_CRTC2:
946 						{
947 							struct matroxfb_dh_fb_info* crtc2;
948 
949 							down_read(&minfo->crtc2.lock);
950 							crtc2 = minfo->crtc2.info;
951 							if (crtc2)
952 								crtc2->fbcon.fbops->fb_set_par(&crtc2->fbcon);
953 							up_read(&minfo->crtc2.lock);
954 						}
955 						break;
956 				}
957 				return 0;
958 			}
959 		case MATROXFB_GET_OUTPUT_MODE:
960 			{
961 				struct matroxioc_output_mode mom;
962 				struct matrox_altout *oproc;
963 				int val;
964 
965 				if (copy_from_user(&mom, argp, sizeof(mom)))
966 					return -EFAULT;
967 				if (mom.output >= MATROXFB_MAX_OUTPUTS)
968 					return -ENXIO;
969 				down_read(&minfo->altout.lock);
970 				oproc = minfo->outputs[mom.output].output;
971 				if (!oproc) {
972 					val = -ENXIO;
973 				} else {
974 					mom.mode = minfo->outputs[mom.output].mode;
975 					val = 0;
976 				}
977 				up_read(&minfo->altout.lock);
978 				if (val)
979 					return val;
980 				if (copy_to_user(argp, &mom, sizeof(mom)))
981 					return -EFAULT;
982 				return 0;
983 			}
984 		case MATROXFB_SET_OUTPUT_CONNECTION:
985 			{
986 				u_int32_t tmp;
987 				int i;
988 				int changes;
989 
990 				if (copy_from_user(&tmp, argp, sizeof(tmp)))
991 					return -EFAULT;
992 				for (i = 0; i < 32; i++) {
993 					if (tmp & (1 << i)) {
994 						if (i >= MATROXFB_MAX_OUTPUTS)
995 							return -ENXIO;
996 						if (!minfo->outputs[i].output)
997 							return -ENXIO;
998 						switch (minfo->outputs[i].src) {
999 							case MATROXFB_SRC_NONE:
1000 							case MATROXFB_SRC_CRTC1:
1001 								break;
1002 							default:
1003 								return -EBUSY;
1004 						}
1005 					}
1006 				}
1007 				if (minfo->devflags.panellink) {
1008 					if (tmp & MATROXFB_OUTPUT_CONN_DFP) {
1009 						if (tmp & MATROXFB_OUTPUT_CONN_SECONDARY)
1010 							return -EINVAL;
1011 						for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
1012 							if (minfo->outputs[i].src == MATROXFB_SRC_CRTC2) {
1013 								return -EBUSY;
1014 							}
1015 						}
1016 					}
1017 				}
1018 				changes = 0;
1019 				for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
1020 					if (tmp & (1 << i)) {
1021 						if (minfo->outputs[i].src != MATROXFB_SRC_CRTC1) {
1022 							changes = 1;
1023 							minfo->outputs[i].src = MATROXFB_SRC_CRTC1;
1024 						}
1025 					} else if (minfo->outputs[i].src == MATROXFB_SRC_CRTC1) {
1026 						changes = 1;
1027 						minfo->outputs[i].src = MATROXFB_SRC_NONE;
1028 					}
1029 				}
1030 				if (!changes)
1031 					return 0;
1032 				matroxfb_set_par(info);
1033 				return 0;
1034 			}
1035 		case MATROXFB_GET_OUTPUT_CONNECTION:
1036 			{
1037 				u_int32_t conn = 0;
1038 				int i;
1039 
1040 				for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
1041 					if (minfo->outputs[i].src == MATROXFB_SRC_CRTC1) {
1042 						conn |= 1 << i;
1043 					}
1044 				}
1045 				if (put_user(conn, (u_int32_t __user *)arg))
1046 					return -EFAULT;
1047 				return 0;
1048 			}
1049 		case MATROXFB_GET_AVAILABLE_OUTPUTS:
1050 			{
1051 				u_int32_t conn = 0;
1052 				int i;
1053 
1054 				for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
1055 					if (minfo->outputs[i].output) {
1056 						switch (minfo->outputs[i].src) {
1057 							case MATROXFB_SRC_NONE:
1058 							case MATROXFB_SRC_CRTC1:
1059 								conn |= 1 << i;
1060 								break;
1061 						}
1062 					}
1063 				}
1064 				if (minfo->devflags.panellink) {
1065 					if (conn & MATROXFB_OUTPUT_CONN_DFP)
1066 						conn &= ~MATROXFB_OUTPUT_CONN_SECONDARY;
1067 					if (conn & MATROXFB_OUTPUT_CONN_SECONDARY)
1068 						conn &= ~MATROXFB_OUTPUT_CONN_DFP;
1069 				}
1070 				if (put_user(conn, (u_int32_t __user *)arg))
1071 					return -EFAULT;
1072 				return 0;
1073 			}
1074 		case MATROXFB_GET_ALL_OUTPUTS:
1075 			{
1076 				u_int32_t conn = 0;
1077 				int i;
1078 
1079 				for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
1080 					if (minfo->outputs[i].output) {
1081 						conn |= 1 << i;
1082 					}
1083 				}
1084 				if (put_user(conn, (u_int32_t __user *)arg))
1085 					return -EFAULT;
1086 				return 0;
1087 			}
1088 		case VIDIOC_QUERYCAP:
1089 			{
1090 				struct v4l2_capability r;
1091 
1092 				memset(&r, 0, sizeof(r));
1093 				strcpy(r.driver, "matroxfb");
1094 				strcpy(r.card, "Matrox");
1095 				sprintf(r.bus_info, "PCI:%s", pci_name(minfo->pcidev));
1096 				r.version = KERNEL_VERSION(1,0,0);
1097 				r.capabilities = V4L2_CAP_VIDEO_OUTPUT;
1098 				if (copy_to_user(argp, &r, sizeof(r)))
1099 					return -EFAULT;
1100 				return 0;
1101 
1102 			}
1103 		case VIDIOC_QUERYCTRL:
1104 			{
1105 				struct v4l2_queryctrl qctrl;
1106 				int err;
1107 
1108 				if (copy_from_user(&qctrl, argp, sizeof(qctrl)))
1109 					return -EFAULT;
1110 
1111 				down_read(&minfo->altout.lock);
1112 				if (!minfo->outputs[1].output) {
1113 					err = -ENXIO;
1114 				} else if (minfo->outputs[1].output->getqueryctrl) {
1115 					err = minfo->outputs[1].output->getqueryctrl(minfo->outputs[1].data, &qctrl);
1116 				} else {
1117 					err = -EINVAL;
1118 				}
1119 				up_read(&minfo->altout.lock);
1120 				if (err >= 0 &&
1121 				    copy_to_user(argp, &qctrl, sizeof(qctrl)))
1122 					return -EFAULT;
1123 				return err;
1124 			}
1125 		case VIDIOC_G_CTRL:
1126 			{
1127 				struct v4l2_control ctrl;
1128 				int err;
1129 
1130 				if (copy_from_user(&ctrl, argp, sizeof(ctrl)))
1131 					return -EFAULT;
1132 
1133 				down_read(&minfo->altout.lock);
1134 				if (!minfo->outputs[1].output) {
1135 					err = -ENXIO;
1136 				} else if (minfo->outputs[1].output->getctrl) {
1137 					err = minfo->outputs[1].output->getctrl(minfo->outputs[1].data, &ctrl);
1138 				} else {
1139 					err = -EINVAL;
1140 				}
1141 				up_read(&minfo->altout.lock);
1142 				if (err >= 0 &&
1143 				    copy_to_user(argp, &ctrl, sizeof(ctrl)))
1144 					return -EFAULT;
1145 				return err;
1146 			}
1147 		case VIDIOC_S_CTRL:
1148 			{
1149 				struct v4l2_control ctrl;
1150 				int err;
1151 
1152 				if (copy_from_user(&ctrl, argp, sizeof(ctrl)))
1153 					return -EFAULT;
1154 
1155 				down_read(&minfo->altout.lock);
1156 				if (!minfo->outputs[1].output) {
1157 					err = -ENXIO;
1158 				} else if (minfo->outputs[1].output->setctrl) {
1159 					err = minfo->outputs[1].output->setctrl(minfo->outputs[1].data, &ctrl);
1160 				} else {
1161 					err = -EINVAL;
1162 				}
1163 				up_read(&minfo->altout.lock);
1164 				return err;
1165 			}
1166 	}
1167 	return -ENOTTY;
1168 }
1169 
1170 /* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
1171 
matroxfb_blank(int blank,struct fb_info * info)1172 static int matroxfb_blank(int blank, struct fb_info *info)
1173 {
1174 	int seq;
1175 	int crtc;
1176 	CRITFLAGS
1177 	struct matrox_fb_info *minfo = info2minfo(info);
1178 
1179 	DBG(__func__)
1180 
1181 	if (minfo->dead)
1182 		return 1;
1183 
1184 	switch (blank) {
1185 	case FB_BLANK_NORMAL:  seq = 0x20; crtc = 0x00; break; /* works ??? */
1186 	case FB_BLANK_VSYNC_SUSPEND:  seq = 0x20; crtc = 0x10; break;
1187 	case FB_BLANK_HSYNC_SUSPEND:  seq = 0x20; crtc = 0x20; break;
1188 	case FB_BLANK_POWERDOWN:  seq = 0x20; crtc = 0x30; break;
1189 	default: seq = 0x00; crtc = 0x00; break;
1190 	}
1191 
1192 	CRITBEGIN
1193 
1194 	mga_outb(M_SEQ_INDEX, 1);
1195 	mga_outb(M_SEQ_DATA, (mga_inb(M_SEQ_DATA) & ~0x20) | seq);
1196 	mga_outb(M_EXTVGA_INDEX, 1);
1197 	mga_outb(M_EXTVGA_DATA, (mga_inb(M_EXTVGA_DATA) & ~0x30) | crtc);
1198 
1199 	CRITEND
1200 	return 0;
1201 }
1202 
1203 static const struct fb_ops matroxfb_ops = {
1204 	.owner =	THIS_MODULE,
1205 	.fb_open =	matroxfb_open,
1206 	.fb_release =	matroxfb_release,
1207 	.fb_check_var =	matroxfb_check_var,
1208 	.fb_set_par =	matroxfb_set_par,
1209 	.fb_setcolreg =	matroxfb_setcolreg,
1210 	.fb_pan_display =matroxfb_pan_display,
1211 	.fb_blank =	matroxfb_blank,
1212 	.fb_ioctl =	matroxfb_ioctl,
1213 /*	.fb_fillrect =	<set by matrox_cfbX_init>, */
1214 /*	.fb_copyarea =	<set by matrox_cfbX_init>, */
1215 /*	.fb_imageblit =	<set by matrox_cfbX_init>, */
1216 /*	.fb_cursor =	<set by matrox_cfbX_init>, */
1217 };
1218 
1219 #define RSDepth(X)	(((X) >> 8) & 0x0F)
1220 #define RS8bpp		0x1
1221 #define RS15bpp		0x2
1222 #define RS16bpp		0x3
1223 #define RS32bpp		0x4
1224 #define RS4bpp		0x5
1225 #define RS24bpp		0x6
1226 #define RSText		0x7
1227 #define RSText8		0x8
1228 /* 9-F */
1229 static struct { struct fb_bitfield red, green, blue, transp; int bits_per_pixel; } colors[] = {
1230 	{ {  0, 8, 0}, { 0, 8, 0}, { 0, 8, 0}, {  0, 0, 0},  8 },
1231 	{ { 10, 5, 0}, { 5, 5, 0}, { 0, 5, 0}, { 15, 1, 0}, 16 },
1232 	{ { 11, 5, 0}, { 5, 6, 0}, { 0, 5, 0}, {  0, 0, 0}, 16 },
1233 	{ { 16, 8, 0}, { 8, 8, 0}, { 0, 8, 0}, { 24, 8, 0}, 32 },
1234 	{ {  0, 8, 0}, { 0, 8, 0}, { 0, 8, 0}, {  0, 0, 0},  4 },
1235 	{ { 16, 8, 0}, { 8, 8, 0}, { 0, 8, 0}, {  0, 0, 0}, 24 },
1236 	{ {  0, 6, 0}, { 0, 6, 0}, { 0, 6, 0}, {  0, 0, 0},  0 },	/* textmode with (default) VGA8x16 */
1237 	{ {  0, 6, 0}, { 0, 6, 0}, { 0, 6, 0}, {  0, 0, 0},  0 },	/* textmode hardwired to VGA8x8 */
1238 };
1239 
1240 /* initialized by setup, see explanation at end of file (search for MODULE_PARM_DESC) */
1241 static unsigned int mem;		/* "matroxfb:mem:xxxxxM" */
1242 static int option_precise_width = 1;	/* cannot be changed, option_precise_width==0 must imply noaccel */
1243 static int inv24;			/* "matroxfb:inv24" */
1244 static int cross4MB = -1;		/* "matroxfb:cross4MB" */
1245 static int disabled;			/* "matroxfb:disabled" */
1246 static int noaccel;			/* "matroxfb:noaccel" */
1247 static int nopan;			/* "matroxfb:nopan" */
1248 static int no_pci_retry;		/* "matroxfb:nopciretry" */
1249 static int novga;			/* "matroxfb:novga" */
1250 static int nobios;			/* "matroxfb:nobios" */
1251 static int noinit = 1;			/* "matroxfb:init" */
1252 static int inverse;			/* "matroxfb:inverse" */
1253 static int sgram;			/* "matroxfb:sgram" */
1254 static int mtrr = 1;			/* "matroxfb:nomtrr" */
1255 static int grayscale;			/* "matroxfb:grayscale" */
1256 static int dev = -1;			/* "matroxfb:dev:xxxxx" */
1257 static unsigned int vesa = ~0;		/* "matroxfb:vesa:xxxxx" */
1258 static int depth = -1;			/* "matroxfb:depth:xxxxx" */
1259 static unsigned int xres;		/* "matroxfb:xres:xxxxx" */
1260 static unsigned int yres;		/* "matroxfb:yres:xxxxx" */
1261 static unsigned int upper = ~0;		/* "matroxfb:upper:xxxxx" */
1262 static unsigned int lower = ~0;		/* "matroxfb:lower:xxxxx" */
1263 static unsigned int vslen;		/* "matroxfb:vslen:xxxxx" */
1264 static unsigned int left = ~0;		/* "matroxfb:left:xxxxx" */
1265 static unsigned int right = ~0;		/* "matroxfb:right:xxxxx" */
1266 static unsigned int hslen;		/* "matroxfb:hslen:xxxxx" */
1267 static unsigned int pixclock;		/* "matroxfb:pixclock:xxxxx" */
1268 static int sync = -1;			/* "matroxfb:sync:xxxxx" */
1269 static unsigned int fv;			/* "matroxfb:fv:xxxxx" */
1270 static unsigned int fh;			/* "matroxfb:fh:xxxxxk" */
1271 static unsigned int maxclk;		/* "matroxfb:maxclk:xxxxM" */
1272 static int dfp;				/* "matroxfb:dfp */
1273 static int dfp_type = -1;		/* "matroxfb:dfp:xxx */
1274 static int memtype = -1;		/* "matroxfb:memtype:xxx" */
1275 static char outputs[8];			/* "matroxfb:outputs:xxx" */
1276 
1277 #ifndef MODULE
1278 static char videomode[64];		/* "matroxfb:mode:xxxxx" or "matroxfb:xxxxx" */
1279 #endif
1280 
matroxfb_getmemory(struct matrox_fb_info * minfo,unsigned int maxSize,unsigned int * realSize)1281 static int matroxfb_getmemory(struct matrox_fb_info *minfo,
1282 			      unsigned int maxSize, unsigned int *realSize)
1283 {
1284 	vaddr_t vm;
1285 	unsigned int offs;
1286 	unsigned int offs2;
1287 	unsigned char orig;
1288 	unsigned char bytes[32];
1289 	unsigned char* tmp;
1290 
1291 	DBG(__func__)
1292 
1293 	vm = minfo->video.vbase;
1294 	maxSize &= ~0x1FFFFF;	/* must be X*2MB (really it must be 2 or X*4MB) */
1295 	/* at least 2MB */
1296 	if (maxSize < 0x0200000) return 0;
1297 	if (maxSize > 0x2000000) maxSize = 0x2000000;
1298 
1299 	mga_outb(M_EXTVGA_INDEX, 0x03);
1300 	orig = mga_inb(M_EXTVGA_DATA);
1301 	mga_outb(M_EXTVGA_DATA, orig | 0x80);
1302 
1303 	tmp = bytes;
1304 	for (offs = 0x100000; offs < maxSize; offs += 0x200000)
1305 		*tmp++ = mga_readb(vm, offs);
1306 	for (offs = 0x100000; offs < maxSize; offs += 0x200000)
1307 		mga_writeb(vm, offs, 0x02);
1308 	mga_outb(M_CACHEFLUSH, 0x00);
1309 	for (offs = 0x100000; offs < maxSize; offs += 0x200000) {
1310 		if (mga_readb(vm, offs) != 0x02)
1311 			break;
1312 		mga_writeb(vm, offs, mga_readb(vm, offs) - 0x02);
1313 		if (mga_readb(vm, offs))
1314 			break;
1315 	}
1316 	tmp = bytes;
1317 	for (offs2 = 0x100000; offs2 < maxSize; offs2 += 0x200000)
1318 		mga_writeb(vm, offs2, *tmp++);
1319 
1320 	mga_outb(M_EXTVGA_INDEX, 0x03);
1321 	mga_outb(M_EXTVGA_DATA, orig);
1322 
1323 	*realSize = offs - 0x100000;
1324 #ifdef CONFIG_FB_MATROX_MILLENIUM
1325 	minfo->interleave = !(!isMillenium(minfo) || ((offs - 0x100000) & 0x3FFFFF));
1326 #endif
1327 	return 1;
1328 }
1329 
1330 struct video_board {
1331 	int maxvram;
1332 	int maxdisplayable;
1333 	int accelID;
1334 	struct matrox_switch* lowlevel;
1335 		 };
1336 #ifdef CONFIG_FB_MATROX_MILLENIUM
1337 static struct video_board vbMillennium = {
1338 	.maxvram = 0x0800000,
1339 	.maxdisplayable = 0x0800000,
1340 	.accelID = FB_ACCEL_MATROX_MGA2064W,
1341 	.lowlevel = &matrox_millennium
1342 };
1343 
1344 static struct video_board vbMillennium2 = {
1345 	.maxvram = 0x1000000,
1346 	.maxdisplayable = 0x0800000,
1347 	.accelID = FB_ACCEL_MATROX_MGA2164W,
1348 	.lowlevel = &matrox_millennium
1349 };
1350 
1351 static struct video_board vbMillennium2A = {
1352 	.maxvram = 0x1000000,
1353 	.maxdisplayable = 0x0800000,
1354 	.accelID = FB_ACCEL_MATROX_MGA2164W_AGP,
1355 	.lowlevel = &matrox_millennium
1356 };
1357 #endif	/* CONFIG_FB_MATROX_MILLENIUM */
1358 #ifdef CONFIG_FB_MATROX_MYSTIQUE
1359 static struct video_board vbMystique = {
1360 	.maxvram = 0x0800000,
1361 	.maxdisplayable = 0x0800000,
1362 	.accelID = FB_ACCEL_MATROX_MGA1064SG,
1363 	.lowlevel = &matrox_mystique
1364 };
1365 #endif	/* CONFIG_FB_MATROX_MYSTIQUE */
1366 #ifdef CONFIG_FB_MATROX_G
1367 static struct video_board vbG100 = {
1368 	.maxvram = 0x0800000,
1369 	.maxdisplayable = 0x0800000,
1370 	.accelID = FB_ACCEL_MATROX_MGAG100,
1371 	.lowlevel = &matrox_G100
1372 };
1373 
1374 static struct video_board vbG200 = {
1375 	.maxvram = 0x1000000,
1376 	.maxdisplayable = 0x1000000,
1377 	.accelID = FB_ACCEL_MATROX_MGAG200,
1378 	.lowlevel = &matrox_G100
1379 };
1380 static struct video_board vbG200eW = {
1381 	.maxvram = 0x1000000,
1382 	.maxdisplayable = 0x0800000,
1383 	.accelID = FB_ACCEL_MATROX_MGAG200,
1384 	.lowlevel = &matrox_G100
1385 };
1386 /* from doc it looks like that accelerator can draw only to low 16MB :-( Direct accesses & displaying are OK for
1387    whole 32MB */
1388 static struct video_board vbG400 = {
1389 	.maxvram = 0x2000000,
1390 	.maxdisplayable = 0x1000000,
1391 	.accelID = FB_ACCEL_MATROX_MGAG400,
1392 	.lowlevel = &matrox_G100
1393 };
1394 #endif
1395 
1396 #define DEVF_VIDEO64BIT		0x0001
1397 #define	DEVF_SWAPS		0x0002
1398 #define DEVF_SRCORG		0x0004
1399 #define DEVF_DUALHEAD		0x0008
1400 #define DEVF_CROSS4MB		0x0010
1401 #define DEVF_TEXT4B		0x0020
1402 /* #define DEVF_recycled	0x0040	*/
1403 /* #define DEVF_recycled	0x0080	*/
1404 #define DEVF_SUPPORT32MB	0x0100
1405 #define DEVF_ANY_VXRES		0x0200
1406 #define DEVF_TEXT16B		0x0400
1407 #define DEVF_CRTC2		0x0800
1408 #define DEVF_MAVEN_CAPABLE	0x1000
1409 #define DEVF_PANELLINK_CAPABLE	0x2000
1410 #define DEVF_G450DAC		0x4000
1411 
1412 #define DEVF_GCORE	(DEVF_VIDEO64BIT | DEVF_SWAPS | DEVF_CROSS4MB)
1413 #define DEVF_G2CORE	(DEVF_GCORE | DEVF_ANY_VXRES | DEVF_MAVEN_CAPABLE | DEVF_PANELLINK_CAPABLE | DEVF_SRCORG | DEVF_DUALHEAD)
1414 #define DEVF_G100	(DEVF_GCORE) /* no doc, no vxres... */
1415 #define DEVF_G200	(DEVF_G2CORE)
1416 #define DEVF_G400	(DEVF_G2CORE | DEVF_SUPPORT32MB | DEVF_TEXT16B | DEVF_CRTC2)
1417 /* if you'll find how to drive DFP... */
1418 #define DEVF_G450	(DEVF_GCORE | DEVF_ANY_VXRES | DEVF_SUPPORT32MB | DEVF_TEXT16B | DEVF_CRTC2 | DEVF_G450DAC | DEVF_SRCORG | DEVF_DUALHEAD)
1419 #define DEVF_G550	(DEVF_G450)
1420 
1421 static struct board {
1422 	unsigned short vendor, device, rev, svid, sid;
1423 	unsigned int flags;
1424 	unsigned int maxclk;
1425 	enum mga_chip chip;
1426 	struct video_board* base;
1427 	const char* name;
1428 		} dev_list[] = {
1429 #ifdef CONFIG_FB_MATROX_MILLENIUM
1430 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MIL,	0xFF,
1431 		0,			0,
1432 		DEVF_TEXT4B,
1433 		230000,
1434 		MGA_2064,
1435 		&vbMillennium,
1436 		"Millennium (PCI)"},
1437 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MIL_2,	0xFF,
1438 		0,			0,
1439 		DEVF_SWAPS,
1440 		220000,
1441 		MGA_2164,
1442 		&vbMillennium2,
1443 		"Millennium II (PCI)"},
1444 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MIL_2_AGP,	0xFF,
1445 		0,			0,
1446 		DEVF_SWAPS,
1447 		250000,
1448 		MGA_2164,
1449 		&vbMillennium2A,
1450 		"Millennium II (AGP)"},
1451 #endif
1452 #ifdef CONFIG_FB_MATROX_MYSTIQUE
1453 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MYS,	0x02,
1454 		0,			0,
1455 		DEVF_VIDEO64BIT | DEVF_CROSS4MB,
1456 		180000,
1457 		MGA_1064,
1458 		&vbMystique,
1459 		"Mystique (PCI)"},
1460 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MYS,	0xFF,
1461 		0,			0,
1462 		DEVF_VIDEO64BIT | DEVF_SWAPS | DEVF_CROSS4MB,
1463 		220000,
1464 		MGA_1164,
1465 		&vbMystique,
1466 		"Mystique 220 (PCI)"},
1467 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MYS_AGP,	0x02,
1468 		0,			0,
1469 		DEVF_VIDEO64BIT | DEVF_CROSS4MB,
1470 		180000,
1471 		MGA_1064,
1472 		&vbMystique,
1473 		"Mystique (AGP)"},
1474 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MYS_AGP,	0xFF,
1475 		0,			0,
1476 		DEVF_VIDEO64BIT | DEVF_SWAPS | DEVF_CROSS4MB,
1477 		220000,
1478 		MGA_1164,
1479 		&vbMystique,
1480 		"Mystique 220 (AGP)"},
1481 #endif
1482 #ifdef CONFIG_FB_MATROX_G
1483 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G100_MM,	0xFF,
1484 		0,			0,
1485 		DEVF_G100,
1486 		230000,
1487 		MGA_G100,
1488 		&vbG100,
1489 		"MGA-G100 (PCI)"},
1490 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G100_AGP,	0xFF,
1491 		0,			0,
1492 		DEVF_G100,
1493 		230000,
1494 		MGA_G100,
1495 		&vbG100,
1496 		"MGA-G100 (AGP)"},
1497 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_PCI,	0xFF,
1498 		0,			0,
1499 		DEVF_G200,
1500 		250000,
1501 		MGA_G200,
1502 		&vbG200,
1503 		"MGA-G200 (PCI)"},
1504 	{PCI_VENDOR_ID_MATROX,	0x0532,	0xFF,
1505 		0,			0,
1506 		DEVF_G200,
1507 		250000,
1508 		MGA_G200,
1509 		&vbG200eW,
1510 		"MGA-G200eW (PCI)"},
1511 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_AGP,	0xFF,
1512 		PCI_SS_VENDOR_ID_MATROX,	PCI_SS_ID_MATROX_GENERIC,
1513 		DEVF_G200,
1514 		220000,
1515 		MGA_G200,
1516 		&vbG200,
1517 		"MGA-G200 (AGP)"},
1518 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_AGP,	0xFF,
1519 		PCI_SS_VENDOR_ID_MATROX,	PCI_SS_ID_MATROX_MYSTIQUE_G200_AGP,
1520 		DEVF_G200,
1521 		230000,
1522 		MGA_G200,
1523 		&vbG200,
1524 		"Mystique G200 (AGP)"},
1525 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_AGP,	0xFF,
1526 		PCI_SS_VENDOR_ID_MATROX,	PCI_SS_ID_MATROX_MILLENIUM_G200_AGP,
1527 		DEVF_G200,
1528 		250000,
1529 		MGA_G200,
1530 		&vbG200,
1531 		"Millennium G200 (AGP)"},
1532 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_AGP,	0xFF,
1533 		PCI_SS_VENDOR_ID_MATROX,	PCI_SS_ID_MATROX_MARVEL_G200_AGP,
1534 		DEVF_G200,
1535 		230000,
1536 		MGA_G200,
1537 		&vbG200,
1538 		"Marvel G200 (AGP)"},
1539 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_AGP,	0xFF,
1540 		PCI_SS_VENDOR_ID_SIEMENS_NIXDORF,	PCI_SS_ID_SIEMENS_MGA_G200_AGP,
1541 		DEVF_G200,
1542 		230000,
1543 		MGA_G200,
1544 		&vbG200,
1545 		"MGA-G200 (AGP)"},
1546 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_AGP,	0xFF,
1547 		0,			0,
1548 		DEVF_G200,
1549 		230000,
1550 		MGA_G200,
1551 		&vbG200,
1552 		"G200 (AGP)"},
1553 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G400,	0x80,
1554 		PCI_SS_VENDOR_ID_MATROX,	PCI_SS_ID_MATROX_MILLENNIUM_G400_MAX_AGP,
1555 		DEVF_G400,
1556 		360000,
1557 		MGA_G400,
1558 		&vbG400,
1559 		"Millennium G400 MAX (AGP)"},
1560 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G400,	0x80,
1561 		0,			0,
1562 		DEVF_G400,
1563 		300000,
1564 		MGA_G400,
1565 		&vbG400,
1566 		"G400 (AGP)"},
1567 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G400,	0xFF,
1568 		0,			0,
1569 		DEVF_G450,
1570 		360000,
1571 		MGA_G450,
1572 		&vbG400,
1573 		"G450"},
1574 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G550,	0xFF,
1575 		0,			0,
1576 		DEVF_G550,
1577 		360000,
1578 		MGA_G550,
1579 		&vbG400,
1580 		"G550"},
1581 #endif
1582 	{0,			0,				0xFF,
1583 		0,			0,
1584 		0,
1585 		0,
1586 		0,
1587 		NULL,
1588 		NULL}};
1589 
1590 #ifndef MODULE
1591 static const struct fb_videomode defaultmode = {
1592 	/* 640x480 @ 60Hz, 31.5 kHz */
1593 	NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2,
1594 	0, FB_VMODE_NONINTERLACED
1595 };
1596 
1597 static int hotplug = 0;
1598 #endif /* !MODULE */
1599 
setDefaultOutputs(struct matrox_fb_info * minfo)1600 static void setDefaultOutputs(struct matrox_fb_info *minfo)
1601 {
1602 	unsigned int i;
1603 	const char* ptr;
1604 
1605 	minfo->outputs[0].default_src = MATROXFB_SRC_CRTC1;
1606 	if (minfo->devflags.g450dac) {
1607 		minfo->outputs[1].default_src = MATROXFB_SRC_CRTC1;
1608 		minfo->outputs[2].default_src = MATROXFB_SRC_CRTC1;
1609 	} else if (dfp) {
1610 		minfo->outputs[2].default_src = MATROXFB_SRC_CRTC1;
1611 	}
1612 	ptr = outputs;
1613 	for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
1614 		char c = *ptr++;
1615 
1616 		if (c == 0) {
1617 			break;
1618 		}
1619 		if (c == '0') {
1620 			minfo->outputs[i].default_src = MATROXFB_SRC_NONE;
1621 		} else if (c == '1') {
1622 			minfo->outputs[i].default_src = MATROXFB_SRC_CRTC1;
1623 		} else if (c == '2' && minfo->devflags.crtc2) {
1624 			minfo->outputs[i].default_src = MATROXFB_SRC_CRTC2;
1625 		} else {
1626 			printk(KERN_ERR "matroxfb: Unknown outputs setting\n");
1627 			break;
1628 		}
1629 	}
1630 	/* Nullify this option for subsequent adapters */
1631 	outputs[0] = 0;
1632 }
1633 
initMatrox2(struct matrox_fb_info * minfo,struct board * b)1634 static int initMatrox2(struct matrox_fb_info *minfo, struct board *b)
1635 {
1636 	unsigned long ctrlptr_phys = 0;
1637 	unsigned long video_base_phys = 0;
1638 	unsigned int memsize;
1639 	int err;
1640 
1641 	static const struct pci_device_id intel_82437[] = {
1642 		{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437) },
1643 		{ },
1644 	};
1645 
1646 	DBG(__func__)
1647 
1648 	/* set default values... */
1649 	vesafb_defined.accel_flags = FB_ACCELF_TEXT;
1650 
1651 	minfo->hw_switch = b->base->lowlevel;
1652 	minfo->devflags.accelerator = b->base->accelID;
1653 	minfo->max_pixel_clock = b->maxclk;
1654 
1655 	printk(KERN_INFO "matroxfb: Matrox %s detected\n", b->name);
1656 	minfo->capable.plnwt = 1;
1657 	minfo->chip = b->chip;
1658 	minfo->capable.srcorg = b->flags & DEVF_SRCORG;
1659 	minfo->devflags.video64bits = b->flags & DEVF_VIDEO64BIT;
1660 	if (b->flags & DEVF_TEXT4B) {
1661 		minfo->devflags.vgastep = 4;
1662 		minfo->devflags.textmode = 4;
1663 		minfo->devflags.text_type_aux = FB_AUX_TEXT_MGA_STEP16;
1664 	} else if (b->flags & DEVF_TEXT16B) {
1665 		minfo->devflags.vgastep = 16;
1666 		minfo->devflags.textmode = 1;
1667 		minfo->devflags.text_type_aux = FB_AUX_TEXT_MGA_STEP16;
1668 	} else {
1669 		minfo->devflags.vgastep = 8;
1670 		minfo->devflags.textmode = 1;
1671 		minfo->devflags.text_type_aux = FB_AUX_TEXT_MGA_STEP8;
1672 	}
1673 	minfo->devflags.support32MB = (b->flags & DEVF_SUPPORT32MB) != 0;
1674 	minfo->devflags.precise_width = !(b->flags & DEVF_ANY_VXRES);
1675 	minfo->devflags.crtc2 = (b->flags & DEVF_CRTC2) != 0;
1676 	minfo->devflags.maven_capable = (b->flags & DEVF_MAVEN_CAPABLE) != 0;
1677 	minfo->devflags.dualhead = (b->flags & DEVF_DUALHEAD) != 0;
1678 	minfo->devflags.dfp_type = dfp_type;
1679 	minfo->devflags.g450dac = (b->flags & DEVF_G450DAC) != 0;
1680 	minfo->devflags.textstep = minfo->devflags.vgastep * minfo->devflags.textmode;
1681 	minfo->devflags.textvram = 65536 / minfo->devflags.textmode;
1682 	setDefaultOutputs(minfo);
1683 	if (b->flags & DEVF_PANELLINK_CAPABLE) {
1684 		minfo->outputs[2].data = minfo;
1685 		minfo->outputs[2].output = &panellink_output;
1686 		minfo->outputs[2].src = minfo->outputs[2].default_src;
1687 		minfo->outputs[2].mode = MATROXFB_OUTPUT_MODE_MONITOR;
1688 		minfo->devflags.panellink = 1;
1689 	}
1690 
1691 	if (minfo->capable.cross4MB < 0)
1692 		minfo->capable.cross4MB = b->flags & DEVF_CROSS4MB;
1693 	if (b->flags & DEVF_SWAPS) {
1694 		ctrlptr_phys = pci_resource_start(minfo->pcidev, 1);
1695 		video_base_phys = pci_resource_start(minfo->pcidev, 0);
1696 		minfo->devflags.fbResource = PCI_BASE_ADDRESS_0;
1697 	} else {
1698 		ctrlptr_phys = pci_resource_start(minfo->pcidev, 0);
1699 		video_base_phys = pci_resource_start(minfo->pcidev, 1);
1700 		minfo->devflags.fbResource = PCI_BASE_ADDRESS_1;
1701 	}
1702 	err = -EINVAL;
1703 	if (!ctrlptr_phys) {
1704 		printk(KERN_ERR "matroxfb: control registers are not available, matroxfb disabled\n");
1705 		goto fail;
1706 	}
1707 	if (!video_base_phys) {
1708 		printk(KERN_ERR "matroxfb: video RAM is not available in PCI address space, matroxfb disabled\n");
1709 		goto fail;
1710 	}
1711 	memsize = b->base->maxvram;
1712 	if (!request_mem_region(ctrlptr_phys, 16384, "matroxfb MMIO")) {
1713 		goto fail;
1714 	}
1715 	if (!request_mem_region(video_base_phys, memsize, "matroxfb FB")) {
1716 		goto failCtrlMR;
1717 	}
1718 	minfo->video.len_maximum = memsize;
1719 	/* convert mem (autodetect k, M) */
1720 	if (mem < 1024) mem *= 1024;
1721 	if (mem < 0x00100000) mem *= 1024;
1722 
1723 	if (mem && (mem < memsize))
1724 		memsize = mem;
1725 	err = -ENOMEM;
1726 
1727 	minfo->mmio.vbase.vaddr = ioremap(ctrlptr_phys, 16384);
1728 	if (!minfo->mmio.vbase.vaddr) {
1729 		printk(KERN_ERR "matroxfb: cannot ioremap(%lX, 16384), matroxfb disabled\n", ctrlptr_phys);
1730 		goto failVideoMR;
1731 	}
1732 	minfo->mmio.base = ctrlptr_phys;
1733 	minfo->mmio.len = 16384;
1734 	minfo->video.base = video_base_phys;
1735 	minfo->video.vbase.vaddr = ioremap_wc(video_base_phys, memsize);
1736 	if (!minfo->video.vbase.vaddr) {
1737 		printk(KERN_ERR "matroxfb: cannot ioremap(%lX, %d), matroxfb disabled\n",
1738 			video_base_phys, memsize);
1739 		goto failCtrlIO;
1740 	}
1741 	{
1742 		u_int32_t cmd;
1743 		u_int32_t mga_option;
1744 
1745 		pci_read_config_dword(minfo->pcidev, PCI_OPTION_REG, &mga_option);
1746 		pci_read_config_dword(minfo->pcidev, PCI_COMMAND, &cmd);
1747 		mga_option &= 0x7FFFFFFF; /* clear BIG_ENDIAN */
1748 		mga_option |= MX_OPTION_BSWAP;
1749 		/* disable palette snooping */
1750 		cmd &= ~PCI_COMMAND_VGA_PALETTE;
1751 		if (pci_dev_present(intel_82437)) {
1752 			if (!(mga_option & 0x20000000) && !minfo->devflags.nopciretry) {
1753 				printk(KERN_WARNING "matroxfb: Disabling PCI retries due to i82437 present\n");
1754 			}
1755 			mga_option |= 0x20000000;
1756 			minfo->devflags.nopciretry = 1;
1757 		}
1758 		pci_write_config_dword(minfo->pcidev, PCI_COMMAND, cmd);
1759 		pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, mga_option);
1760 		minfo->hw.MXoptionReg = mga_option;
1761 
1762 		/* select non-DMA memory for PCI_MGA_DATA, otherwise dump of PCI cfg space can lock PCI bus */
1763 		/* maybe preinit() candidate, but it is same... for all devices... at this time... */
1764 		pci_write_config_dword(minfo->pcidev, PCI_MGA_INDEX, 0x00003C00);
1765 	}
1766 
1767 	err = -ENXIO;
1768 	matroxfb_read_pins(minfo);
1769 	if (minfo->hw_switch->preinit(minfo)) {
1770 		goto failVideoIO;
1771 	}
1772 
1773 	err = -ENOMEM;
1774 	if (!matroxfb_getmemory(minfo, memsize, &minfo->video.len) || !minfo->video.len) {
1775 		printk(KERN_ERR "matroxfb: cannot determine memory size\n");
1776 		goto failVideoIO;
1777 	}
1778 	minfo->devflags.ydstorg = 0;
1779 
1780 	minfo->video.base = video_base_phys;
1781 	minfo->video.len_usable = minfo->video.len;
1782 	if (minfo->video.len_usable > b->base->maxdisplayable)
1783 		minfo->video.len_usable = b->base->maxdisplayable;
1784 	if (mtrr)
1785 		minfo->wc_cookie = arch_phys_wc_add(video_base_phys,
1786 						    minfo->video.len);
1787 
1788 	if (!minfo->devflags.novga)
1789 		request_region(0x3C0, 32, "matrox");
1790 	matroxfb_g450_connect(minfo);
1791 	minfo->hw_switch->reset(minfo);
1792 
1793 	minfo->fbcon.monspecs.hfmin = 0;
1794 	minfo->fbcon.monspecs.hfmax = fh;
1795 	minfo->fbcon.monspecs.vfmin = 0;
1796 	minfo->fbcon.monspecs.vfmax = fv;
1797 	minfo->fbcon.monspecs.dpms = 0;	/* TBD */
1798 
1799 	/* static settings */
1800 	vesafb_defined.red = colors[depth-1].red;
1801 	vesafb_defined.green = colors[depth-1].green;
1802 	vesafb_defined.blue = colors[depth-1].blue;
1803 	vesafb_defined.bits_per_pixel = colors[depth-1].bits_per_pixel;
1804 	vesafb_defined.grayscale = grayscale;
1805 	vesafb_defined.vmode = 0;
1806 	if (noaccel)
1807 		vesafb_defined.accel_flags &= ~FB_ACCELF_TEXT;
1808 
1809 	minfo->fbops = matroxfb_ops;
1810 	minfo->fbcon.fbops = &minfo->fbops;
1811 	minfo->fbcon.pseudo_palette = minfo->cmap;
1812 	minfo->fbcon.flags = FBINFO_PARTIAL_PAN_OK | 	 /* Prefer panning for scroll under MC viewer/edit */
1813 				      FBINFO_HWACCEL_COPYAREA |  /* We have hw-assisted bmove */
1814 				      FBINFO_HWACCEL_FILLRECT |  /* And fillrect */
1815 				      FBINFO_HWACCEL_IMAGEBLIT | /* And imageblit */
1816 				      FBINFO_HWACCEL_XPAN |      /* And we support both horizontal */
1817 				      FBINFO_HWACCEL_YPAN |      /* And vertical panning */
1818 				      FBINFO_READS_FAST;
1819 	minfo->video.len_usable &= PAGE_MASK;
1820 	fb_alloc_cmap(&minfo->fbcon.cmap, 256, 1);
1821 
1822 #ifndef MODULE
1823 	/* mode database is marked __init!!! */
1824 	if (!hotplug) {
1825 		fb_find_mode(&vesafb_defined, &minfo->fbcon, videomode[0] ? videomode : NULL,
1826 			NULL, 0, &defaultmode, vesafb_defined.bits_per_pixel);
1827 	}
1828 #endif /* !MODULE */
1829 
1830 	/* mode modifiers */
1831 	if (hslen)
1832 		vesafb_defined.hsync_len = hslen;
1833 	if (vslen)
1834 		vesafb_defined.vsync_len = vslen;
1835 	if (left != ~0)
1836 		vesafb_defined.left_margin = left;
1837 	if (right != ~0)
1838 		vesafb_defined.right_margin = right;
1839 	if (upper != ~0)
1840 		vesafb_defined.upper_margin = upper;
1841 	if (lower != ~0)
1842 		vesafb_defined.lower_margin = lower;
1843 	if (xres)
1844 		vesafb_defined.xres = xres;
1845 	if (yres)
1846 		vesafb_defined.yres = yres;
1847 	if (sync != -1)
1848 		vesafb_defined.sync = sync;
1849 	else if (vesafb_defined.sync == ~0) {
1850 		vesafb_defined.sync = 0;
1851 		if (yres < 400)
1852 			vesafb_defined.sync |= FB_SYNC_HOR_HIGH_ACT;
1853 		else if (yres < 480)
1854 			vesafb_defined.sync |= FB_SYNC_VERT_HIGH_ACT;
1855 	}
1856 
1857 	/* fv, fh, maxclk limits was specified */
1858 	{
1859 		unsigned int tmp;
1860 
1861 		if (fv) {
1862 			tmp = fv * (vesafb_defined.upper_margin + vesafb_defined.yres
1863 				  + vesafb_defined.lower_margin + vesafb_defined.vsync_len);
1864 			if ((tmp < fh) || (fh == 0)) fh = tmp;
1865 		}
1866 		if (fh) {
1867 			tmp = fh * (vesafb_defined.left_margin + vesafb_defined.xres
1868 				  + vesafb_defined.right_margin + vesafb_defined.hsync_len);
1869 			if ((tmp < maxclk) || (maxclk == 0)) maxclk = tmp;
1870 		}
1871 		tmp = (maxclk + 499) / 500;
1872 		if (tmp) {
1873 			tmp = (2000000000 + tmp) / tmp;
1874 			if (tmp > pixclock) pixclock = tmp;
1875 		}
1876 	}
1877 	if (pixclock) {
1878 		if (pixclock < 2000)		/* > 500MHz */
1879 			pixclock = 4000;	/* 250MHz */
1880 		if (pixclock > 1000000)
1881 			pixclock = 1000000;	/* 1MHz */
1882 		vesafb_defined.pixclock = pixclock;
1883 	}
1884 
1885 	/* FIXME: Where to move this?! */
1886 #if defined(CONFIG_PPC_PMAC)
1887 #ifndef MODULE
1888 	if (machine_is(powermac)) {
1889 		struct fb_var_screeninfo var;
1890 
1891 		if (default_vmode <= 0 || default_vmode > VMODE_MAX)
1892 			default_vmode = VMODE_640_480_60;
1893 #if defined(CONFIG_PPC32)
1894 		if (IS_REACHABLE(CONFIG_NVRAM) && default_cmode == CMODE_NVRAM)
1895 			default_cmode = nvram_read_byte(NV_CMODE);
1896 #endif
1897 		if (default_cmode < CMODE_8 || default_cmode > CMODE_32)
1898 			default_cmode = CMODE_8;
1899 		if (!mac_vmode_to_var(default_vmode, default_cmode, &var)) {
1900 			var.accel_flags = vesafb_defined.accel_flags;
1901 			var.xoffset = var.yoffset = 0;
1902 			/* Note: mac_vmode_to_var() does not set all parameters */
1903 			vesafb_defined = var;
1904 		}
1905 	}
1906 #endif /* !MODULE */
1907 #endif /* CONFIG_PPC_PMAC */
1908 	vesafb_defined.xres_virtual = vesafb_defined.xres;
1909 	if (nopan) {
1910 		vesafb_defined.yres_virtual = vesafb_defined.yres;
1911 	} else {
1912 		vesafb_defined.yres_virtual = 65536; /* large enough to be INF, but small enough
1913 							to yres_virtual * xres_virtual < 2^32 */
1914 	}
1915 	matroxfb_init_fix(minfo);
1916 	minfo->fbcon.screen_base = vaddr_va(minfo->video.vbase);
1917 	/* Normalize values (namely yres_virtual) */
1918 	matroxfb_check_var(&vesafb_defined, &minfo->fbcon);
1919 	/* And put it into "current" var. Do NOT program hardware yet, or we'll not take over
1920 	 * vgacon correctly. fbcon_startup will call fb_set_par for us, WITHOUT check_var,
1921 	 * and unfortunately it will do it BEFORE vgacon contents is saved, so it won't work
1922 	 * anyway. But we at least tried... */
1923 	minfo->fbcon.var = vesafb_defined;
1924 	err = -EINVAL;
1925 
1926 	printk(KERN_INFO "matroxfb: %dx%dx%dbpp (virtual: %dx%d)\n",
1927 		vesafb_defined.xres, vesafb_defined.yres, vesafb_defined.bits_per_pixel,
1928 		vesafb_defined.xres_virtual, vesafb_defined.yres_virtual);
1929 	printk(KERN_INFO "matroxfb: framebuffer at 0x%lX, mapped to 0x%p, size %d\n",
1930 		minfo->video.base, vaddr_va(minfo->video.vbase), minfo->video.len);
1931 
1932 /* We do not have to set currcon to 0... register_framebuffer do it for us on first console
1933  * and we do not want currcon == 0 for subsequent framebuffers */
1934 
1935 	minfo->fbcon.device = &minfo->pcidev->dev;
1936 	if (register_framebuffer(&minfo->fbcon) < 0) {
1937 		goto failVideoIO;
1938 	}
1939 	fb_info(&minfo->fbcon, "%s frame buffer device\n", minfo->fbcon.fix.id);
1940 
1941 	/* there is no console on this fb... but we have to initialize hardware
1942 	 * until someone tells me what is proper thing to do */
1943 	if (!minfo->initialized) {
1944 		fb_info(&minfo->fbcon, "initializing hardware\n");
1945 		/* We have to use FB_ACTIVATE_FORCE, as we had to put vesafb_defined to the fbcon.var
1946 		 * already before, so register_framebuffer works correctly. */
1947 		vesafb_defined.activate |= FB_ACTIVATE_FORCE;
1948 		fb_set_var(&minfo->fbcon, &vesafb_defined);
1949 	}
1950 
1951 	return 0;
1952 failVideoIO:;
1953 	matroxfb_g450_shutdown(minfo);
1954 	iounmap(minfo->video.vbase.vaddr);
1955 failCtrlIO:;
1956 	iounmap(minfo->mmio.vbase.vaddr);
1957 failVideoMR:;
1958 	release_mem_region(video_base_phys, minfo->video.len_maximum);
1959 failCtrlMR:;
1960 	release_mem_region(ctrlptr_phys, 16384);
1961 fail:;
1962 	return err;
1963 }
1964 
1965 static LIST_HEAD(matroxfb_list);
1966 static LIST_HEAD(matroxfb_driver_list);
1967 
1968 #define matroxfb_l(x) list_entry(x, struct matrox_fb_info, next_fb)
1969 #define matroxfb_driver_l(x) list_entry(x, struct matroxfb_driver, node)
matroxfb_register_driver(struct matroxfb_driver * drv)1970 int matroxfb_register_driver(struct matroxfb_driver* drv) {
1971 	struct matrox_fb_info* minfo;
1972 
1973 	list_add(&drv->node, &matroxfb_driver_list);
1974 	list_for_each_entry(minfo, &matroxfb_list, next_fb) {
1975 		void* p;
1976 
1977 		if (minfo->drivers_count == MATROXFB_MAX_FB_DRIVERS)
1978 			continue;
1979 		p = drv->probe(minfo);
1980 		if (p) {
1981 			minfo->drivers_data[minfo->drivers_count] = p;
1982 			minfo->drivers[minfo->drivers_count++] = drv;
1983 		}
1984 	}
1985 	return 0;
1986 }
1987 
matroxfb_unregister_driver(struct matroxfb_driver * drv)1988 void matroxfb_unregister_driver(struct matroxfb_driver* drv) {
1989 	struct matrox_fb_info* minfo;
1990 
1991 	list_del(&drv->node);
1992 	list_for_each_entry(minfo, &matroxfb_list, next_fb) {
1993 		int i;
1994 
1995 		for (i = 0; i < minfo->drivers_count; ) {
1996 			if (minfo->drivers[i] == drv) {
1997 				if (drv && drv->remove)
1998 					drv->remove(minfo, minfo->drivers_data[i]);
1999 				minfo->drivers[i] = minfo->drivers[--minfo->drivers_count];
2000 				minfo->drivers_data[i] = minfo->drivers_data[minfo->drivers_count];
2001 			} else
2002 				i++;
2003 		}
2004 	}
2005 }
2006 
matroxfb_register_device(struct matrox_fb_info * minfo)2007 static void matroxfb_register_device(struct matrox_fb_info* minfo) {
2008 	struct matroxfb_driver* drv;
2009 	int i = 0;
2010 	list_add(&minfo->next_fb, &matroxfb_list);
2011 	for (drv = matroxfb_driver_l(matroxfb_driver_list.next);
2012 	     drv != matroxfb_driver_l(&matroxfb_driver_list);
2013 	     drv = matroxfb_driver_l(drv->node.next)) {
2014 		if (drv->probe) {
2015 			void *p = drv->probe(minfo);
2016 			if (p) {
2017 				minfo->drivers_data[i] = p;
2018 				minfo->drivers[i++] = drv;
2019 				if (i == MATROXFB_MAX_FB_DRIVERS)
2020 					break;
2021 			}
2022 		}
2023 	}
2024 	minfo->drivers_count = i;
2025 }
2026 
matroxfb_unregister_device(struct matrox_fb_info * minfo)2027 static void matroxfb_unregister_device(struct matrox_fb_info* minfo) {
2028 	int i;
2029 
2030 	list_del(&minfo->next_fb);
2031 	for (i = 0; i < minfo->drivers_count; i++) {
2032 		struct matroxfb_driver* drv = minfo->drivers[i];
2033 
2034 		if (drv && drv->remove)
2035 			drv->remove(minfo, minfo->drivers_data[i]);
2036 	}
2037 }
2038 
matroxfb_probe(struct pci_dev * pdev,const struct pci_device_id * dummy)2039 static int matroxfb_probe(struct pci_dev* pdev, const struct pci_device_id* dummy) {
2040 	struct board* b;
2041 	u_int16_t svid;
2042 	u_int16_t sid;
2043 	struct matrox_fb_info* minfo;
2044 	int err;
2045 	u_int32_t cmd;
2046 	DBG(__func__)
2047 
2048 	err = aperture_remove_conflicting_pci_devices(pdev, "matroxfb");
2049 	if (err)
2050 		return err;
2051 
2052 	svid = pdev->subsystem_vendor;
2053 	sid = pdev->subsystem_device;
2054 	for (b = dev_list; b->vendor; b++) {
2055 		if ((b->vendor != pdev->vendor) || (b->device != pdev->device) || (b->rev < pdev->revision)) continue;
2056 		if (b->svid)
2057 			if ((b->svid != svid) || (b->sid != sid)) continue;
2058 		break;
2059 	}
2060 	/* not match... */
2061 	if (!b->vendor)
2062 		return -ENODEV;
2063 	if (dev > 0) {
2064 		/* not requested one... */
2065 		dev--;
2066 		return -ENODEV;
2067 	}
2068 	pci_read_config_dword(pdev, PCI_COMMAND, &cmd);
2069 	if (pci_enable_device(pdev)) {
2070 		return -1;
2071 	}
2072 
2073 	minfo = kzalloc(sizeof(*minfo), GFP_KERNEL);
2074 	if (!minfo)
2075 		return -ENOMEM;
2076 
2077 	minfo->pcidev = pdev;
2078 	minfo->dead = 0;
2079 	minfo->usecount = 0;
2080 	minfo->userusecount = 0;
2081 
2082 	pci_set_drvdata(pdev, minfo);
2083 	/* DEVFLAGS */
2084 	minfo->devflags.memtype = memtype;
2085 	if (memtype != -1)
2086 		noinit = 0;
2087 	if (cmd & PCI_COMMAND_MEMORY) {
2088 		minfo->devflags.novga = novga;
2089 		minfo->devflags.nobios = nobios;
2090 		minfo->devflags.noinit = noinit;
2091 		/* subsequent heads always needs initialization and must not enable BIOS */
2092 		novga = 1;
2093 		nobios = 1;
2094 		noinit = 0;
2095 	} else {
2096 		minfo->devflags.novga = 1;
2097 		minfo->devflags.nobios = 1;
2098 		minfo->devflags.noinit = 0;
2099 	}
2100 
2101 	minfo->devflags.nopciretry = no_pci_retry;
2102 	minfo->devflags.mga_24bpp_fix = inv24;
2103 	minfo->devflags.precise_width = option_precise_width;
2104 	minfo->devflags.sgram = sgram;
2105 	minfo->capable.cross4MB = cross4MB;
2106 
2107 	spin_lock_init(&minfo->lock.DAC);
2108 	spin_lock_init(&minfo->lock.accel);
2109 	init_rwsem(&minfo->crtc2.lock);
2110 	init_rwsem(&minfo->altout.lock);
2111 	mutex_init(&minfo->fbcon.mm_lock);
2112 	minfo->irq_flags = 0;
2113 	init_waitqueue_head(&minfo->crtc1.vsync.wait);
2114 	init_waitqueue_head(&minfo->crtc2.vsync.wait);
2115 	minfo->crtc1.panpos = -1;
2116 
2117 	err = initMatrox2(minfo, b);
2118 	if (!err) {
2119 		matroxfb_register_device(minfo);
2120 		return 0;
2121 	}
2122 	kfree(minfo);
2123 	return -1;
2124 }
2125 
pci_remove_matrox(struct pci_dev * pdev)2126 static void pci_remove_matrox(struct pci_dev* pdev) {
2127 	struct matrox_fb_info* minfo;
2128 
2129 	minfo = pci_get_drvdata(pdev);
2130 	matroxfb_remove(minfo, 1);
2131 }
2132 
2133 static const struct pci_device_id matroxfb_devices[] = {
2134 #ifdef CONFIG_FB_MATROX_MILLENIUM
2135 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MIL,
2136 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2137 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MIL_2,
2138 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2139 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MIL_2_AGP,
2140 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2141 #endif
2142 #ifdef CONFIG_FB_MATROX_MYSTIQUE
2143 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_MYS,
2144 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2145 #endif
2146 #ifdef CONFIG_FB_MATROX_G
2147 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G100_MM,
2148 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2149 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G100_AGP,
2150 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2151 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_PCI,
2152 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2153 	{PCI_VENDOR_ID_MATROX,	0x0532,
2154 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2155 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_AGP,
2156 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2157 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G400,
2158 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2159 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G550,
2160 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
2161 #endif
2162 	{0,			0,
2163 		0,		0,		0, 0, 0}
2164 };
2165 
2166 MODULE_DEVICE_TABLE(pci, matroxfb_devices);
2167 
2168 
2169 static struct pci_driver matroxfb_driver = {
2170 	.name =		"matroxfb",
2171 	.id_table =	matroxfb_devices,
2172 	.probe =	matroxfb_probe,
2173 	.remove =	pci_remove_matrox,
2174 };
2175 
2176 /* **************************** init-time only **************************** */
2177 
2178 #define RSResolution(X)	((X) & 0x0F)
2179 #define RS640x400	1
2180 #define RS640x480	2
2181 #define RS800x600	3
2182 #define RS1024x768	4
2183 #define RS1280x1024	5
2184 #define RS1600x1200	6
2185 #define RS768x576	7
2186 #define RS960x720	8
2187 #define RS1152x864	9
2188 #define RS1408x1056	10
2189 #define RS640x350	11
2190 #define RS1056x344	12	/* 132 x 43 text */
2191 #define RS1056x400	13	/* 132 x 50 text */
2192 #define RS1056x480	14	/* 132 x 60 text */
2193 #define RSNoxNo		15
2194 /* 10-FF */
2195 static struct { int xres, yres, left, right, upper, lower, hslen, vslen, vfreq; } timmings[] __initdata = {
2196 	{  640,  400,  48, 16, 39,  8,  96, 2, 70 },
2197 	{  640,  480,  48, 16, 33, 10,  96, 2, 60 },
2198 	{  800,  600, 144, 24, 28,  8, 112, 6, 60 },
2199 	{ 1024,  768, 160, 32, 30,  4, 128, 4, 60 },
2200 	{ 1280, 1024, 224, 32, 32,  4, 136, 4, 60 },
2201 	{ 1600, 1200, 272, 48, 32,  5, 152, 5, 60 },
2202 	{  768,  576, 144, 16, 28,  6, 112, 4, 60 },
2203 	{  960,  720, 144, 24, 28,  8, 112, 4, 60 },
2204 	{ 1152,  864, 192, 32, 30,  4, 128, 4, 60 },
2205 	{ 1408, 1056, 256, 40, 32,  5, 144, 5, 60 },
2206 	{  640,  350,  48, 16, 39,  8,  96, 2, 70 },
2207 	{ 1056,  344,  96, 24, 59, 44, 160, 2, 70 },
2208 	{ 1056,  400,  96, 24, 39,  8, 160, 2, 70 },
2209 	{ 1056,  480,  96, 24, 36, 12, 160, 3, 60 },
2210 	{    0,    0,  ~0, ~0, ~0, ~0,   0, 0,  0 }
2211 };
2212 
2213 #define RSCreate(X,Y)	((X) | ((Y) << 8))
2214 static struct { unsigned int vesa; unsigned int info; } *RSptr, vesamap[] __initdata = {
2215 /* default must be first */
2216 	{    ~0, RSCreate(RSNoxNo,     RS8bpp ) },
2217 	{ 0x101, RSCreate(RS640x480,   RS8bpp ) },
2218 	{ 0x100, RSCreate(RS640x400,   RS8bpp ) },
2219 	{ 0x180, RSCreate(RS768x576,   RS8bpp ) },
2220 	{ 0x103, RSCreate(RS800x600,   RS8bpp ) },
2221 	{ 0x188, RSCreate(RS960x720,   RS8bpp ) },
2222 	{ 0x105, RSCreate(RS1024x768,  RS8bpp ) },
2223 	{ 0x190, RSCreate(RS1152x864,  RS8bpp ) },
2224 	{ 0x107, RSCreate(RS1280x1024, RS8bpp ) },
2225 	{ 0x198, RSCreate(RS1408x1056, RS8bpp ) },
2226 	{ 0x11C, RSCreate(RS1600x1200, RS8bpp ) },
2227 	{ 0x110, RSCreate(RS640x480,   RS15bpp) },
2228 	{ 0x181, RSCreate(RS768x576,   RS15bpp) },
2229 	{ 0x113, RSCreate(RS800x600,   RS15bpp) },
2230 	{ 0x189, RSCreate(RS960x720,   RS15bpp) },
2231 	{ 0x116, RSCreate(RS1024x768,  RS15bpp) },
2232 	{ 0x191, RSCreate(RS1152x864,  RS15bpp) },
2233 	{ 0x119, RSCreate(RS1280x1024, RS15bpp) },
2234 	{ 0x199, RSCreate(RS1408x1056, RS15bpp) },
2235 	{ 0x11D, RSCreate(RS1600x1200, RS15bpp) },
2236 	{ 0x111, RSCreate(RS640x480,   RS16bpp) },
2237 	{ 0x182, RSCreate(RS768x576,   RS16bpp) },
2238 	{ 0x114, RSCreate(RS800x600,   RS16bpp) },
2239 	{ 0x18A, RSCreate(RS960x720,   RS16bpp) },
2240 	{ 0x117, RSCreate(RS1024x768,  RS16bpp) },
2241 	{ 0x192, RSCreate(RS1152x864,  RS16bpp) },
2242 	{ 0x11A, RSCreate(RS1280x1024, RS16bpp) },
2243 	{ 0x19A, RSCreate(RS1408x1056, RS16bpp) },
2244 	{ 0x11E, RSCreate(RS1600x1200, RS16bpp) },
2245 	{ 0x1B2, RSCreate(RS640x480,   RS24bpp) },
2246 	{ 0x184, RSCreate(RS768x576,   RS24bpp) },
2247 	{ 0x1B5, RSCreate(RS800x600,   RS24bpp) },
2248 	{ 0x18C, RSCreate(RS960x720,   RS24bpp) },
2249 	{ 0x1B8, RSCreate(RS1024x768,  RS24bpp) },
2250 	{ 0x194, RSCreate(RS1152x864,  RS24bpp) },
2251 	{ 0x1BB, RSCreate(RS1280x1024, RS24bpp) },
2252 	{ 0x19C, RSCreate(RS1408x1056, RS24bpp) },
2253 	{ 0x1BF, RSCreate(RS1600x1200, RS24bpp) },
2254 	{ 0x112, RSCreate(RS640x480,   RS32bpp) },
2255 	{ 0x183, RSCreate(RS768x576,   RS32bpp) },
2256 	{ 0x115, RSCreate(RS800x600,   RS32bpp) },
2257 	{ 0x18B, RSCreate(RS960x720,   RS32bpp) },
2258 	{ 0x118, RSCreate(RS1024x768,  RS32bpp) },
2259 	{ 0x193, RSCreate(RS1152x864,  RS32bpp) },
2260 	{ 0x11B, RSCreate(RS1280x1024, RS32bpp) },
2261 	{ 0x19B, RSCreate(RS1408x1056, RS32bpp) },
2262 	{ 0x11F, RSCreate(RS1600x1200, RS32bpp) },
2263 	{ 0x010, RSCreate(RS640x350,   RS4bpp ) },
2264 	{ 0x012, RSCreate(RS640x480,   RS4bpp ) },
2265 	{ 0x102, RSCreate(RS800x600,   RS4bpp ) },
2266 	{ 0x104, RSCreate(RS1024x768,  RS4bpp ) },
2267 	{ 0x106, RSCreate(RS1280x1024, RS4bpp ) },
2268 	{     0, 0				}};
2269 
matroxfb_init_params(void)2270 static void __init matroxfb_init_params(void) {
2271 	/* fh from kHz to Hz */
2272 	if (fh < 1000)
2273 		fh *= 1000;	/* 1kHz minimum */
2274 	/* maxclk */
2275 	if (maxclk < 1000) maxclk *= 1000;	/* kHz -> Hz, MHz -> kHz */
2276 	if (maxclk < 1000000) maxclk *= 1000;	/* kHz -> Hz, 1MHz minimum */
2277 	/* fix VESA number */
2278 	if (vesa != ~0)
2279 		vesa &= 0x1DFF;		/* mask out clearscreen, acceleration and so on */
2280 
2281 	/* static settings */
2282 	for (RSptr = vesamap; RSptr->vesa; RSptr++) {
2283 		if (RSptr->vesa == vesa) break;
2284 	}
2285 	if (!RSptr->vesa) {
2286 		printk(KERN_ERR "Invalid vesa mode 0x%04X\n", vesa);
2287 		RSptr = vesamap;
2288 	}
2289 	{
2290 		int res = RSResolution(RSptr->info)-1;
2291 		if (left == ~0)
2292 			left = timmings[res].left;
2293 		if (!xres)
2294 			xres = timmings[res].xres;
2295 		if (right == ~0)
2296 			right = timmings[res].right;
2297 		if (!hslen)
2298 			hslen = timmings[res].hslen;
2299 		if (upper == ~0)
2300 			upper = timmings[res].upper;
2301 		if (!yres)
2302 			yres = timmings[res].yres;
2303 		if (lower == ~0)
2304 			lower = timmings[res].lower;
2305 		if (!vslen)
2306 			vslen = timmings[res].vslen;
2307 		if (!(fv||fh||maxclk||pixclock))
2308 			fv = timmings[res].vfreq;
2309 		if (depth == -1)
2310 			depth = RSDepth(RSptr->info);
2311 	}
2312 }
2313 
matrox_init(void)2314 static int __init matrox_init(void) {
2315 	int err;
2316 
2317 	matroxfb_init_params();
2318 	err = pci_register_driver(&matroxfb_driver);
2319 	dev = -1;	/* accept all new devices... */
2320 	return err;
2321 }
2322 
2323 /* **************************** exit-time only **************************** */
2324 
matrox_done(void)2325 static void __exit matrox_done(void) {
2326 	pci_unregister_driver(&matroxfb_driver);
2327 }
2328 
2329 #ifndef MODULE
2330 
2331 /* ************************* init in-kernel code ************************** */
2332 
matroxfb_setup(char * options)2333 static int __init matroxfb_setup(char *options) {
2334 	char *this_opt;
2335 
2336 	DBG(__func__)
2337 
2338 	if (!options || !*options)
2339 		return 0;
2340 
2341 	while ((this_opt = strsep(&options, ",")) != NULL) {
2342 		if (!*this_opt) continue;
2343 
2344 		dprintk("matroxfb_setup: option %s\n", this_opt);
2345 
2346 		if (!strncmp(this_opt, "dev:", 4))
2347 			dev = simple_strtoul(this_opt+4, NULL, 0);
2348 		else if (!strncmp(this_opt, "depth:", 6)) {
2349 			switch (simple_strtoul(this_opt+6, NULL, 0)) {
2350 				case 0: depth = RSText; break;
2351 				case 4: depth = RS4bpp; break;
2352 				case 8: depth = RS8bpp; break;
2353 				case 15:depth = RS15bpp; break;
2354 				case 16:depth = RS16bpp; break;
2355 				case 24:depth = RS24bpp; break;
2356 				case 32:depth = RS32bpp; break;
2357 				default:
2358 					printk(KERN_ERR "matroxfb: unsupported color depth\n");
2359 			}
2360 		} else if (!strncmp(this_opt, "xres:", 5))
2361 			xres = simple_strtoul(this_opt+5, NULL, 0);
2362 		else if (!strncmp(this_opt, "yres:", 5))
2363 			yres = simple_strtoul(this_opt+5, NULL, 0);
2364 		else if (!strncmp(this_opt, "vslen:", 6))
2365 			vslen = simple_strtoul(this_opt+6, NULL, 0);
2366 		else if (!strncmp(this_opt, "hslen:", 6))
2367 			hslen = simple_strtoul(this_opt+6, NULL, 0);
2368 		else if (!strncmp(this_opt, "left:", 5))
2369 			left = simple_strtoul(this_opt+5, NULL, 0);
2370 		else if (!strncmp(this_opt, "right:", 6))
2371 			right = simple_strtoul(this_opt+6, NULL, 0);
2372 		else if (!strncmp(this_opt, "upper:", 6))
2373 			upper = simple_strtoul(this_opt+6, NULL, 0);
2374 		else if (!strncmp(this_opt, "lower:", 6))
2375 			lower = simple_strtoul(this_opt+6, NULL, 0);
2376 		else if (!strncmp(this_opt, "pixclock:", 9))
2377 			pixclock = simple_strtoul(this_opt+9, NULL, 0);
2378 		else if (!strncmp(this_opt, "sync:", 5))
2379 			sync = simple_strtoul(this_opt+5, NULL, 0);
2380 		else if (!strncmp(this_opt, "vesa:", 5))
2381 			vesa = simple_strtoul(this_opt+5, NULL, 0);
2382 		else if (!strncmp(this_opt, "maxclk:", 7))
2383 			maxclk = simple_strtoul(this_opt+7, NULL, 0);
2384 		else if (!strncmp(this_opt, "fh:", 3))
2385 			fh = simple_strtoul(this_opt+3, NULL, 0);
2386 		else if (!strncmp(this_opt, "fv:", 3))
2387 			fv = simple_strtoul(this_opt+3, NULL, 0);
2388 		else if (!strncmp(this_opt, "mem:", 4))
2389 			mem = simple_strtoul(this_opt+4, NULL, 0);
2390 		else if (!strncmp(this_opt, "mode:", 5))
2391 			strscpy(videomode, this_opt + 5, sizeof(videomode));
2392 		else if (!strncmp(this_opt, "outputs:", 8))
2393 			strscpy(outputs, this_opt + 8, sizeof(outputs));
2394 		else if (!strncmp(this_opt, "dfp:", 4)) {
2395 			dfp_type = simple_strtoul(this_opt+4, NULL, 0);
2396 			dfp = 1;
2397 		}
2398 #ifdef CONFIG_PPC_PMAC
2399 		else if (!strncmp(this_opt, "vmode:", 6)) {
2400 			unsigned int vmode = simple_strtoul(this_opt+6, NULL, 0);
2401 			if (vmode > 0 && vmode <= VMODE_MAX)
2402 				default_vmode = vmode;
2403 		} else if (!strncmp(this_opt, "cmode:", 6)) {
2404 			unsigned int cmode = simple_strtoul(this_opt+6, NULL, 0);
2405 			switch (cmode) {
2406 				case 0:
2407 				case 8:
2408 					default_cmode = CMODE_8;
2409 					break;
2410 				case 15:
2411 				case 16:
2412 					default_cmode = CMODE_16;
2413 					break;
2414 				case 24:
2415 				case 32:
2416 					default_cmode = CMODE_32;
2417 					break;
2418 			}
2419 		}
2420 #endif
2421 		else if (!strcmp(this_opt, "disabled"))	/* nodisabled does not exist */
2422 			disabled = 1;
2423 		else if (!strcmp(this_opt, "enabled"))	/* noenabled does not exist */
2424 			disabled = 0;
2425 		else if (!strcmp(this_opt, "sgram"))	/* nosgram == sdram */
2426 			sgram = 1;
2427 		else if (!strcmp(this_opt, "sdram"))
2428 			sgram = 0;
2429 		else if (!strncmp(this_opt, "memtype:", 8))
2430 			memtype = simple_strtoul(this_opt+8, NULL, 0);
2431 		else {
2432 			int value = 1;
2433 
2434 			if (!strncmp(this_opt, "no", 2)) {
2435 				value = 0;
2436 				this_opt += 2;
2437 			}
2438 			if (! strcmp(this_opt, "inverse"))
2439 				inverse = value;
2440 			else if (!strcmp(this_opt, "accel"))
2441 				noaccel = !value;
2442 			else if (!strcmp(this_opt, "pan"))
2443 				nopan = !value;
2444 			else if (!strcmp(this_opt, "pciretry"))
2445 				no_pci_retry = !value;
2446 			else if (!strcmp(this_opt, "vga"))
2447 				novga = !value;
2448 			else if (!strcmp(this_opt, "bios"))
2449 				nobios = !value;
2450 			else if (!strcmp(this_opt, "init"))
2451 				noinit = !value;
2452 			else if (!strcmp(this_opt, "mtrr"))
2453 				mtrr = value;
2454 			else if (!strcmp(this_opt, "inv24"))
2455 				inv24 = value;
2456 			else if (!strcmp(this_opt, "cross4MB"))
2457 				cross4MB = value;
2458 			else if (!strcmp(this_opt, "grayscale"))
2459 				grayscale = value;
2460 			else if (!strcmp(this_opt, "dfp"))
2461 				dfp = value;
2462 			else {
2463 				strscpy(videomode, this_opt, sizeof(videomode));
2464 			}
2465 		}
2466 	}
2467 	return 0;
2468 }
2469 
2470 static int __initdata initialized = 0;
2471 
matroxfb_init(void)2472 static int __init matroxfb_init(void)
2473 {
2474 	char *option = NULL;
2475 	int err = 0;
2476 
2477 	DBG(__func__)
2478 
2479 	if (fb_get_options("matroxfb", &option))
2480 		return -ENODEV;
2481 	matroxfb_setup(option);
2482 
2483 	if (disabled)
2484 		return -ENXIO;
2485 	if (!initialized) {
2486 		initialized = 1;
2487 		err = matrox_init();
2488 	}
2489 	hotplug = 1;
2490 	/* never return failure, user can hotplug matrox later... */
2491 	return err;
2492 }
2493 
2494 #else
2495 
2496 /* *************************** init module code **************************** */
2497 
2498 MODULE_AUTHOR("(c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
2499 MODULE_DESCRIPTION("Accelerated FBDev driver for Matrox Millennium/Mystique/G100/G200/G400/G450/G550");
2500 MODULE_LICENSE("GPL");
2501 
2502 module_param(mem, int, 0);
2503 MODULE_PARM_DESC(mem, "Size of available memory in MB, KB or B (2,4,8,12,16MB, default=autodetect)");
2504 module_param(disabled, int, 0);
2505 MODULE_PARM_DESC(disabled, "Disabled (0 or 1=disabled) (default=0)");
2506 module_param(noaccel, int, 0);
2507 MODULE_PARM_DESC(noaccel, "Do not use accelerating engine (0 or 1=disabled) (default=0)");
2508 module_param(nopan, int, 0);
2509 MODULE_PARM_DESC(nopan, "Disable pan on startup (0 or 1=disabled) (default=0)");
2510 module_param(no_pci_retry, int, 0);
2511 MODULE_PARM_DESC(no_pci_retry, "PCI retries enabled (0 or 1=disabled) (default=0)");
2512 module_param(novga, int, 0);
2513 MODULE_PARM_DESC(novga, "VGA I/O (0x3C0-0x3DF) disabled (0 or 1=disabled) (default=0)");
2514 module_param(nobios, int, 0);
2515 MODULE_PARM_DESC(nobios, "Disables ROM BIOS (0 or 1=disabled) (default=do not change BIOS state)");
2516 module_param(noinit, int, 0);
2517 MODULE_PARM_DESC(noinit, "Disables W/SG/SD-RAM and bus interface initialization (0 or 1=do not initialize) (default=0)");
2518 module_param(memtype, int, 0);
2519 MODULE_PARM_DESC(memtype, "Memory type for G200/G400 (see Documentation/fb/matroxfb.rst for explanation) (default=3 for G200, 0 for G400)");
2520 module_param(mtrr, int, 0);
2521 MODULE_PARM_DESC(mtrr, "This speeds up video memory accesses (0=disabled or 1) (default=1)");
2522 module_param(sgram, int, 0);
2523 MODULE_PARM_DESC(sgram, "Indicates that G100/G200/G400 has SGRAM memory (0=SDRAM, 1=SGRAM) (default=0)");
2524 module_param(inv24, int, 0);
2525 MODULE_PARM_DESC(inv24, "Inverts clock polarity for 24bpp and loop frequency > 100MHz (default=do not invert polarity)");
2526 module_param(inverse, int, 0);
2527 MODULE_PARM_DESC(inverse, "Inverse (0 or 1) (default=0)");
2528 module_param(dev, int, 0);
2529 MODULE_PARM_DESC(dev, "Multihead support, attach to device ID (0..N) (default=all working)");
2530 module_param(vesa, int, 0);
2531 MODULE_PARM_DESC(vesa, "Startup videomode (0x000-0x1FF) (default=0x101)");
2532 module_param(xres, int, 0);
2533 MODULE_PARM_DESC(xres, "Horizontal resolution (px), overrides xres from vesa (default=vesa)");
2534 module_param(yres, int, 0);
2535 MODULE_PARM_DESC(yres, "Vertical resolution (scans), overrides yres from vesa (default=vesa)");
2536 module_param(upper, int, 0);
2537 MODULE_PARM_DESC(upper, "Upper blank space (scans), overrides upper from vesa (default=vesa)");
2538 module_param(lower, int, 0);
2539 MODULE_PARM_DESC(lower, "Lower blank space (scans), overrides lower from vesa (default=vesa)");
2540 module_param(vslen, int, 0);
2541 MODULE_PARM_DESC(vslen, "Vertical sync length (scans), overrides lower from vesa (default=vesa)");
2542 module_param(left, int, 0);
2543 MODULE_PARM_DESC(left, "Left blank space (px), overrides left from vesa (default=vesa)");
2544 module_param(right, int, 0);
2545 MODULE_PARM_DESC(right, "Right blank space (px), overrides right from vesa (default=vesa)");
2546 module_param(hslen, int, 0);
2547 MODULE_PARM_DESC(hslen, "Horizontal sync length (px), overrides hslen from vesa (default=vesa)");
2548 module_param(pixclock, int, 0);
2549 MODULE_PARM_DESC(pixclock, "Pixelclock (ns), overrides pixclock from vesa (default=vesa)");
2550 module_param(sync, int, 0);
2551 MODULE_PARM_DESC(sync, "Sync polarity, overrides sync from vesa (default=vesa)");
2552 module_param(depth, int, 0);
2553 MODULE_PARM_DESC(depth, "Color depth (0=text,8,15,16,24,32) (default=vesa)");
2554 module_param(maxclk, int, 0);
2555 MODULE_PARM_DESC(maxclk, "Startup maximal clock, 0-999MHz, 1000-999999kHz, 1000000-INF Hz");
2556 module_param(fh, int, 0);
2557 MODULE_PARM_DESC(fh, "Startup horizontal frequency, 0-999kHz, 1000-INF Hz");
2558 module_param(fv, int, 0);
2559 MODULE_PARM_DESC(fv, "Startup vertical frequency, 0-INF Hz\n"
2560 "You should specify \"fv:max_monitor_vsync,fh:max_monitor_hsync,maxclk:max_monitor_dotclock\"");
2561 module_param(grayscale, int, 0);
2562 MODULE_PARM_DESC(grayscale, "Sets display into grayscale. Works perfectly with paletized videomode (4, 8bpp), some limitations apply to 16, 24 and 32bpp videomodes (default=nograyscale)");
2563 module_param(cross4MB, int, 0);
2564 MODULE_PARM_DESC(cross4MB, "Specifies that 4MB boundary can be in middle of line. (default=autodetected)");
2565 module_param(dfp, int, 0);
2566 MODULE_PARM_DESC(dfp, "Specifies whether to use digital flat panel interface of G200/G400 (0 or 1) (default=0)");
2567 module_param(dfp_type, int, 0);
2568 MODULE_PARM_DESC(dfp_type, "Specifies DFP interface type (0 to 255) (default=read from hardware)");
2569 module_param_string(outputs, outputs, sizeof(outputs), 0);
2570 MODULE_PARM_DESC(outputs, "Specifies which CRTC is mapped to which output (string of up to three letters, consisting of 0 (disabled), 1 (CRTC1), 2 (CRTC2)) (default=111 for Gx50, 101 for G200/G400 with DFP, and 100 for all other devices)");
2571 #ifdef CONFIG_PPC_PMAC
2572 module_param_named(vmode, default_vmode, int, 0);
2573 MODULE_PARM_DESC(vmode, "Specify the vmode mode number that should be used (640x480 default)");
2574 module_param_named(cmode, default_cmode, int, 0);
2575 MODULE_PARM_DESC(cmode, "Specify the video depth that should be used (8bit default)");
2576 #endif
2577 
matroxfb_init(void)2578 static int __init matroxfb_init(void){
2579 
2580 	DBG(__func__)
2581 
2582 	if (disabled)
2583 		return -ENXIO;
2584 
2585 	if (depth == 0)
2586 		depth = RSText;
2587 	else if (depth == 4)
2588 		depth = RS4bpp;
2589 	else if (depth == 8)
2590 		depth = RS8bpp;
2591 	else if (depth == 15)
2592 		depth = RS15bpp;
2593 	else if (depth == 16)
2594 		depth = RS16bpp;
2595 	else if (depth == 24)
2596 		depth = RS24bpp;
2597 	else if (depth == 32)
2598 		depth = RS32bpp;
2599 	else if (depth != -1) {
2600 		printk(KERN_ERR "matroxfb: depth %d is not supported, using default\n", depth);
2601 		depth = -1;
2602 	}
2603 	matrox_init();
2604 	/* never return failure; user can hotplug matrox later... */
2605 	return 0;
2606 }
2607 #endif	/* MODULE */
2608 
2609 module_init(matroxfb_init);
2610 module_exit(matrox_done);
2611 EXPORT_SYMBOL(matroxfb_register_driver);
2612 EXPORT_SYMBOL(matroxfb_unregister_driver);
2613 EXPORT_SYMBOL(matroxfb_wait_for_sync);
2614 EXPORT_SYMBOL(matroxfb_enable_irq);
2615