1	// SPDX-License-Identifier: GPL-2.0-only
2	/*
3	* Frame buffer driver for Trident TGUI, Blade and Image series
4	*
5	* Copyright 2001, 2002 - Jani Monoses <jani@iv.ro>
6	* Copyright 2009 Krzysztof Helt <krzysztof.h1@wp.pl>
7	*
8	* CREDITS:(in order of appearance)
9	* skeletonfb.c by Geert Uytterhoeven and other fb code in drivers/video
10	* Special thanks ;) to Mattia Crivellini <tia@mclink.it>
11	* much inspired by the XFree86 4.x Trident driver sources
12	* by Alan Hourihane the FreeVGA project
13	* Francesco Salvestrini <salvestrini@users.sf.net> XP support,
14	* code, suggestions
15	* TODO:
16	* timing value tweaking so it looks good on every monitor in every mode
17	*/
18
19	#include <linux/aperture.h>
20	#include <linux/module.h>
21	#include <linux/fb.h>
22	#include <linux/init.h>
23	#include <linux/pci.h>
24	#include <linux/slab.h>
25
26	#include <linux/delay.h>
27	#include <video/vga.h>
28	#include <video/trident.h>
29
30	#include <linux/i2c.h>
31	#include <linux/i2c-algo-bit.h>
32
33	struct tridentfb_par {
34	void __iomem *io_virt; /* iospace virtual memory address */
35	u32 pseudo_pal[16];
36	int chip_id;
37	int flatpanel;
38	void (*init_accel) (struct tridentfb_par *, int, int);
39	void (*wait_engine) (struct tridentfb_par *);
40	void (*fill_rect)
41	(struct tridentfb_par *par, u32, u32, u32, u32, u32, u32);
42	void (*copy_rect)
43	(struct tridentfb_par *par, u32, u32, u32, u32, u32, u32);
44	void (*image_blit)
45	(struct tridentfb_par *par, const char*,
46	u32, u32, u32, u32, u32, u32);
47	unsigned char eng_oper; /* engine operation... */
48	bool ddc_registered;
49	struct i2c_adapter ddc_adapter;
50	struct i2c_algo_bit_data ddc_algo;
51	};
52
53	static struct fb_fix_screeninfo tridentfb_fix = {
54	.id = "Trident",
55	.type = FB_TYPE_PACKED_PIXELS,
56	.ypanstep = 1,
57	.visual = FB_VISUAL_PSEUDOCOLOR,
58	.accel = FB_ACCEL_NONE,
59	};
60
61	/* defaults which are normally overriden by user values */
62
63	/* video mode */
64	static char *mode_option;
65	static int bpp = 8;
66
67	static int noaccel;
68
69	static int center;
70	static int stretch;
71
72	static int fp;
73	static int crt;
74
75	static int memsize;
76	static int memdiff;
77	static int nativex;
78
79	module_param(mode_option, charp, 0);
80	MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'");
81	module_param_named(mode, mode_option, charp, 0);
82	MODULE_PARM_DESC(mode, "Initial video mode e.g. '648x480-8@60' (deprecated)");
83	module_param(bpp, int, 0);
84	module_param(center, int, 0);
85	module_param(stretch, int, 0);
86	module_param(noaccel, int, 0);
87	module_param(memsize, int, 0);
88	module_param(memdiff, int, 0);
89	module_param(nativex, int, 0);
90	module_param(fp, int, 0);
91	MODULE_PARM_DESC(fp, "Define if flatpanel is connected");
92	module_param(crt, int, 0);
93	MODULE_PARM_DESC(crt, "Define if CRT is connected");
94
95	static inline int is_oldclock(int id)
96	{
97	return (id == TGUI9440) ||
98	(id == TGUI9660) ||
99	(id == CYBER9320);
100	}
101
102	static inline int is_oldprotect(int id)
103	{
104	return is_oldclock(id) ||
105	(id == PROVIDIA9685) ||
106	(id == CYBER9382) ||
107	(id == CYBER9385);
108	}
109
110	static inline int is_blade(int id)
111	{
112	return (id == BLADE3D) ||
113	(id == CYBERBLADEE4) ||
114	(id == CYBERBLADEi7) ||
115	(id == CYBERBLADEi7D) ||
116	(id == CYBERBLADEi1) ||
117	(id == CYBERBLADEi1D) ||
118	(id == CYBERBLADEAi1) ||
119	(id == CYBERBLADEAi1D);
120	}
121
122	static inline int is_xp(int id)
123	{
124	return (id == CYBERBLADEXPAi1) ||
125	(id == CYBERBLADEXPm8) ||
126	(id == CYBERBLADEXPm16);
127	}
128
129	static inline int is3Dchip(int id)
130	{
131	return is_blade(id) || is_xp(id) ||
132	(id == CYBER9397) || (id == CYBER9397DVD) ||
133	(id == CYBER9520) || (id == CYBER9525DVD) ||
134	(id == IMAGE975) || (id == IMAGE985);
135	}
136
137	static inline int iscyber(int id)
138	{
139	switch (id) {
140	case CYBER9388:
141	case CYBER9382:
142	case CYBER9385:
143	case CYBER9397:
144	case CYBER9397DVD:
145	case CYBER9520:
146	case CYBER9525DVD:
147	case CYBERBLADEE4:
148	case CYBERBLADEi7D:
149	case CYBERBLADEi1:
150	case CYBERBLADEi1D:
151	case CYBERBLADEAi1:
152	case CYBERBLADEAi1D:
153	case CYBERBLADEXPAi1:
154	return 1;
155
156	case CYBER9320:
157	case CYBERBLADEi7: /* VIA MPV4 integrated version */
158	default:
159	/* case CYBERBLDAEXPm8: Strange */
160	/* case CYBERBLDAEXPm16: Strange */
161	return 0;
162	}
163	}
164
165	static inline void t_outb(struct tridentfb_par *p, u8 val, u16 reg)
166	{
167	fb_writeb(b: val, addr: p->io_virt + reg);
168	}
169
170	static inline u8 t_inb(struct tridentfb_par *p, u16 reg)
171	{
172	return fb_readb(addr: p->io_virt + reg);
173	}
174
175	static inline void writemmr(struct tridentfb_par *par, u16 r, u32 v)
176	{
177	fb_writel(b: v, addr: par->io_virt + r);
178	}
179
180	static inline u32 readmmr(struct tridentfb_par *par, u16 r)
181	{
182	return fb_readl(addr: par->io_virt + r);
183	}
184
185	#define DDC_SDA_TGUI BIT(0)
186	#define DDC_SCL_TGUI BIT(1)
187	#define DDC_SCL_DRIVE_TGUI BIT(2)
188	#define DDC_SDA_DRIVE_TGUI BIT(3)
189	#define DDC_MASK_TGUI (DDC_SCL_DRIVE_TGUI | DDC_SDA_DRIVE_TGUI)
190
191	static void tridentfb_ddc_setscl_tgui(void *data, int val)
192	{
193	struct tridentfb_par *par = data;
194	u8 reg = vga_mm_rcrt(regbase: par->io_virt, I2C) & DDC_MASK_TGUI;
195
196	if (val)
197	reg &= ~DDC_SCL_DRIVE_TGUI; /* disable drive - don't drive hi */
198	else
199	reg |= DDC_SCL_DRIVE_TGUI; /* drive low */
200
201	vga_mm_wcrt(regbase: par->io_virt, I2C, val: reg);
202	}
203
204	static void tridentfb_ddc_setsda_tgui(void *data, int val)
205	{
206	struct tridentfb_par *par = data;
207	u8 reg = vga_mm_rcrt(regbase: par->io_virt, I2C) & DDC_MASK_TGUI;
208
209	if (val)
210	reg &= ~DDC_SDA_DRIVE_TGUI; /* disable drive - don't drive hi */
211	else
212	reg |= DDC_SDA_DRIVE_TGUI; /* drive low */
213
214	vga_mm_wcrt(regbase: par->io_virt, I2C, val: reg);
215	}
216
217	static int tridentfb_ddc_getsda_tgui(void *data)
218	{
219	struct tridentfb_par *par = data;
220
221	return !!(vga_mm_rcrt(regbase: par->io_virt, I2C) & DDC_SDA_TGUI);
222	}
223
224	#define DDC_SDA_IN BIT(0)
225	#define DDC_SCL_OUT BIT(1)
226	#define DDC_SDA_OUT BIT(3)
227	#define DDC_SCL_IN BIT(6)
228	#define DDC_MASK (DDC_SCL_OUT | DDC_SDA_OUT)
229
230	static void tridentfb_ddc_setscl(void *data, int val)
231	{
232	struct tridentfb_par *par = data;
233	unsigned char reg;
234
235	reg = vga_mm_rcrt(regbase: par->io_virt, I2C) & DDC_MASK;
236	if (val)
237	reg |= DDC_SCL_OUT;
238	else
239	reg &= ~DDC_SCL_OUT;
240	vga_mm_wcrt(regbase: par->io_virt, I2C, val: reg);
241	}
242
243	static void tridentfb_ddc_setsda(void *data, int val)
244	{
245	struct tridentfb_par *par = data;
246	unsigned char reg;
247
248	reg = vga_mm_rcrt(regbase: par->io_virt, I2C) & DDC_MASK;
249	if (!val)
250	reg |= DDC_SDA_OUT;
251	else
252	reg &= ~DDC_SDA_OUT;
253	vga_mm_wcrt(regbase: par->io_virt, I2C, val: reg);
254	}
255
256	static int tridentfb_ddc_getscl(void *data)
257	{
258	struct tridentfb_par *par = data;
259
260	return !!(vga_mm_rcrt(regbase: par->io_virt, I2C) & DDC_SCL_IN);
261	}
262
263	static int tridentfb_ddc_getsda(void *data)
264	{
265	struct tridentfb_par *par = data;
266
267	return !!(vga_mm_rcrt(regbase: par->io_virt, I2C) & DDC_SDA_IN);
268	}
269
270	static int tridentfb_setup_ddc_bus(struct fb_info *info)
271	{
272	struct tridentfb_par *par = info->par;
273
274	strscpy(par->ddc_adapter.name, info->fix.id,
275	sizeof(par->ddc_adapter.name));
276	par->ddc_adapter.owner = THIS_MODULE;
277	par->ddc_adapter.algo_data = &par->ddc_algo;
278	par->ddc_adapter.dev.parent = info->device;
279	if (is_oldclock(id: par->chip_id)) { /* not sure if this check is OK */
280	par->ddc_algo.setsda = tridentfb_ddc_setsda_tgui;
281	par->ddc_algo.setscl = tridentfb_ddc_setscl_tgui;
282	par->ddc_algo.getsda = tridentfb_ddc_getsda_tgui;
283	/* no getscl */
284	} else {
285	par->ddc_algo.setsda = tridentfb_ddc_setsda;
286	par->ddc_algo.setscl = tridentfb_ddc_setscl;
287	par->ddc_algo.getsda = tridentfb_ddc_getsda;
288	par->ddc_algo.getscl = tridentfb_ddc_getscl;
289	}
290	par->ddc_algo.udelay = 10;
291	par->ddc_algo.timeout = 20;
292	par->ddc_algo.data = par;
293
294	i2c_set_adapdata(adap: &par->ddc_adapter, data: par);
295
296	return i2c_bit_add_bus(&par->ddc_adapter);
297	}
298
299	/*
300	* Blade specific acceleration.
301	*/
302
303	#define point(x, y) ((y) << 16 | (x))
304
305	static void blade_init_accel(struct tridentfb_par *par, int pitch, int bpp)
306	{
307	int v1 = (pitch >> 3) << 20;
308	int tmp = bpp == 24 ? 2 : (bpp >> 4);
309	int v2 = v1 | (tmp << 29);
310
311	writemmr(par, r: 0x21C0, v: v2);
312	writemmr(par, r: 0x21C4, v: v2);
313	writemmr(par, r: 0x21B8, v: v2);
314	writemmr(par, r: 0x21BC, v: v2);
315	writemmr(par, r: 0x21D0, v: v1);
316	writemmr(par, r: 0x21D4, v: v1);
317	writemmr(par, r: 0x21C8, v: v1);
318	writemmr(par, r: 0x21CC, v: v1);
319	writemmr(par, r: 0x216C, v: 0);
320	}
321
322	static void blade_wait_engine(struct tridentfb_par *par)
323	{
324	while (readmmr(par, STATUS) & 0xFA800000)
325	cpu_relax();
326	}
327
328	static void blade_fill_rect(struct tridentfb_par *par,
329	u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
330	{
331	writemmr(par, COLOR, v: c);
332	writemmr(par, ROP, v: rop ? ROP_X : ROP_S);
333	writemmr(par, CMD, v: 0x20000000 | 1 << 19 | 1 << 4 | 2 << 2);
334
335	writemmr(par, DST1, point(x, y));
336	writemmr(par, DST2, point(x + w - 1, y + h - 1));
337	}
338
339	static void blade_image_blit(struct tridentfb_par *par, const char *data,
340	u32 x, u32 y, u32 w, u32 h, u32 c, u32 b)
341	{
342	unsigned size = ((w + 31) >> 5) * h;
343
344	writemmr(par, COLOR, v: c);
345	writemmr(par, BGCOLOR, v: b);
346	writemmr(par, CMD, v: 0xa0000000 | 3 << 19);
347
348	writemmr(par, DST1, point(x, y));
349	writemmr(par, DST2, point(x + w - 1, y + h - 1));
350
351	iowrite32_rep(port: par->io_virt + 0x10000, buf: data, count: size);
352	}
353
354	static void blade_copy_rect(struct tridentfb_par *par,
355	u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
356	{
357	int direction = 2;
358	u32 s1 = point(x1, y1);
359	u32 s2 = point(x1 + w - 1, y1 + h - 1);
360	u32 d1 = point(x2, y2);
361	u32 d2 = point(x2 + w - 1, y2 + h - 1);
362
363	if ((y1 > y2) || ((y1 == y2) && (x1 > x2)))
364	direction = 0;
365
366	writemmr(par, ROP, ROP_S);
367	writemmr(par, CMD, v: 0xE0000000 | 1 << 19 | 1 << 4 | 1 << 2 | direction);
368
369	writemmr(par, SRC1, v: direction ? s2 : s1);
370	writemmr(par, SRC2, v: direction ? s1 : s2);
371	writemmr(par, DST1, v: direction ? d2 : d1);
372	writemmr(par, DST2, v: direction ? d1 : d2);
373	}
374
375	/*
376	* BladeXP specific acceleration functions
377	*/
378
379	static void xp_init_accel(struct tridentfb_par *par, int pitch, int bpp)
380	{
381	unsigned char x = bpp == 24 ? 3 : (bpp >> 4);
382	int v1 = pitch << (bpp == 24 ? 20 : (18 + x));
383
384	switch (pitch << (bpp >> 3)) {
385	case 8192:
386	case 512:
387	x |= 0x00;
388	break;
389	case 1024:
390	x |= 0x04;
391	break;
392	case 2048:
393	x |= 0x08;
394	break;
395	case 4096:
396	x |= 0x0C;
397	break;
398	}
399
400	t_outb(p: par, val: x, reg: 0x2125);
401
402	par->eng_oper = x | 0x40;
403
404	writemmr(par, r: 0x2154, v: v1);
405	writemmr(par, r: 0x2150, v: v1);
406	t_outb(p: par, val: 3, reg: 0x2126);
407	}
408
409	static void xp_wait_engine(struct tridentfb_par *par)
410	{
411	int count = 0;
412	int timeout = 0;
413
414	while (t_inb(p: par, STATUS) & 0x80) {
415	count++;
416	if (count == 10000000) {
417	/* Timeout */
418	count = 9990000;
419	timeout++;
420	if (timeout == 8) {
421	/* Reset engine */
422	t_outb(p: par, val: 0x00, STATUS);
423	return;
424	}
425	}
426	cpu_relax();
427	}
428	}
429
430	static void xp_fill_rect(struct tridentfb_par *par,
431	u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
432	{
433	writemmr(par, r: 0x2127, ROP_P);
434	writemmr(par, r: 0x2158, v: c);
435	writemmr(par, DRAWFL, v: 0x4000);
436	writemmr(par, OLDDIM, point(h, w));
437	writemmr(par, OLDDST, point(y, x));
438	t_outb(p: par, val: 0x01, OLDCMD);
439	t_outb(p: par, val: par->eng_oper, reg: 0x2125);
440	}
441
442	static void xp_copy_rect(struct tridentfb_par *par,
443	u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
444	{
445	u32 x1_tmp, x2_tmp, y1_tmp, y2_tmp;
446	int direction = 0x0004;
447
448	if ((x1 < x2) && (y1 == y2)) {
449	direction |= 0x0200;
450	x1_tmp = x1 + w - 1;
451	x2_tmp = x2 + w - 1;
452	} else {
453	x1_tmp = x1;
454	x2_tmp = x2;
455	}
456
457	if (y1 < y2) {
458	direction |= 0x0100;
459	y1_tmp = y1 + h - 1;
460	y2_tmp = y2 + h - 1;
461	} else {
462	y1_tmp = y1;
463	y2_tmp = y2;
464	}
465
466	writemmr(par, DRAWFL, v: direction);
467	t_outb(p: par, ROP_S, reg: 0x2127);
468	writemmr(par, OLDSRC, point(y1_tmp, x1_tmp));
469	writemmr(par, OLDDST, point(y2_tmp, x2_tmp));
470	writemmr(par, OLDDIM, point(h, w));
471	t_outb(p: par, val: 0x01, OLDCMD);
472	}
473
474	/*
475	* Image specific acceleration functions
476	*/
477	static void image_init_accel(struct tridentfb_par *par, int pitch, int bpp)
478	{
479	int tmp = bpp == 24 ? 2: (bpp >> 4);
480
481	writemmr(par, r: 0x2120, v: 0xF0000000);
482	writemmr(par, r: 0x2120, v: 0x40000000 | tmp);
483	writemmr(par, r: 0x2120, v: 0x80000000);
484	writemmr(par, r: 0x2144, v: 0x00000000);
485	writemmr(par, r: 0x2148, v: 0x00000000);
486	writemmr(par, r: 0x2150, v: 0x00000000);
487	writemmr(par, r: 0x2154, v: 0x00000000);
488	writemmr(par, r: 0x2120, v: 0x60000000 | (pitch << 16) | pitch);
489	writemmr(par, r: 0x216C, v: 0x00000000);
490	writemmr(par, r: 0x2170, v: 0x00000000);
491	writemmr(par, r: 0x217C, v: 0x00000000);
492	writemmr(par, r: 0x2120, v: 0x10000000);
493	writemmr(par, r: 0x2130, v: (2047 << 16) | 2047);
494	}
495
496	static void image_wait_engine(struct tridentfb_par *par)
497	{
498	while (readmmr(par, r: 0x2164) & 0xF0000000)
499	cpu_relax();
500	}
501
502	static void image_fill_rect(struct tridentfb_par *par,
503	u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
504	{
505	writemmr(par, r: 0x2120, v: 0x80000000);
506	writemmr(par, r: 0x2120, v: 0x90000000 | ROP_S);
507
508	writemmr(par, r: 0x2144, v: c);
509
510	writemmr(par, DST1, point(x, y));
511	writemmr(par, DST2, point(x + w - 1, y + h - 1));
512
513	writemmr(par, r: 0x2124, v: 0x80000000 | 3 << 22 | 1 << 10 | 1 << 9);
514	}
515
516	static void image_copy_rect(struct tridentfb_par *par,
517	u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
518	{
519	int direction = 0x4;
520	u32 s1 = point(x1, y1);
521	u32 s2 = point(x1 + w - 1, y1 + h - 1);
522	u32 d1 = point(x2, y2);
523	u32 d2 = point(x2 + w - 1, y2 + h - 1);
524
525	if ((y1 > y2) || ((y1 == y2) && (x1 > x2)))
526	direction = 0;
527
528	writemmr(par, r: 0x2120, v: 0x80000000);
529	writemmr(par, r: 0x2120, v: 0x90000000 | ROP_S);
530
531	writemmr(par, SRC1, v: direction ? s2 : s1);
532	writemmr(par, SRC2, v: direction ? s1 : s2);
533	writemmr(par, DST1, v: direction ? d2 : d1);
534	writemmr(par, DST2, v: direction ? d1 : d2);
535	writemmr(par, r: 0x2124,
536	v: 0x80000000 | 1 << 22 | 1 << 10 | 1 << 7 | direction);
537	}
538
539	/*
540	* TGUI 9440/96XX acceleration
541	*/
542
543	static void tgui_init_accel(struct tridentfb_par *par, int pitch, int bpp)
544	{
545	unsigned char x = bpp == 24 ? 3 : (bpp >> 4);
546
547	/* disable clipping */
548	writemmr(par, r: 0x2148, v: 0);
549	writemmr(par, r: 0x214C, point(4095, 2047));
550
551	switch ((pitch * bpp) / 8) {
552	case 8192:
553	case 512:
554	x |= 0x00;
555	break;
556	case 1024:
557	x |= 0x04;
558	break;
559	case 2048:
560	x |= 0x08;
561	break;
562	case 4096:
563	x |= 0x0C;
564	break;
565	}
566
567	fb_writew(b: x, addr: par->io_virt + 0x2122);
568	}
569
570	static void tgui_fill_rect(struct tridentfb_par *par,
571	u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
572	{
573	t_outb(p: par, ROP_P, reg: 0x2127);
574	writemmr(par, OLDCLR, v: c);
575	writemmr(par, DRAWFL, v: 0x4020);
576	writemmr(par, OLDDIM, point(w - 1, h - 1));
577	writemmr(par, OLDDST, point(x, y));
578	t_outb(p: par, val: 1, OLDCMD);
579	}
580
581	static void tgui_copy_rect(struct tridentfb_par *par,
582	u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
583	{
584	int flags = 0;
585	u16 x1_tmp, x2_tmp, y1_tmp, y2_tmp;
586
587	if ((x1 < x2) && (y1 == y2)) {
588	flags |= 0x0200;
589	x1_tmp = x1 + w - 1;
590	x2_tmp = x2 + w - 1;
591	} else {
592	x1_tmp = x1;
593	x2_tmp = x2;
594	}
595
596	if (y1 < y2) {
597	flags |= 0x0100;
598	y1_tmp = y1 + h - 1;
599	y2_tmp = y2 + h - 1;
600	} else {
601	y1_tmp = y1;
602	y2_tmp = y2;
603	}
604
605	writemmr(par, DRAWFL, v: 0x4 | flags);
606	t_outb(p: par, ROP_S, reg: 0x2127);
607	writemmr(par, OLDSRC, point(x1_tmp, y1_tmp));
608	writemmr(par, OLDDST, point(x2_tmp, y2_tmp));
609	writemmr(par, OLDDIM, point(w - 1, h - 1));
610	t_outb(p: par, val: 1, OLDCMD);
611	}
612
613	/*
614	* Accel functions called by the upper layers
615	*/
616	static void tridentfb_fillrect(struct fb_info *info,
617	const struct fb_fillrect *fr)
618	{
619	struct tridentfb_par *par = info->par;
620	int col;
621
622	if (info->flags & FBINFO_HWACCEL_DISABLED) {
623	cfb_fillrect(info, rect: fr);
624	return;
625	}
626	if (info->var.bits_per_pixel == 8) {
627	col = fr->color;
628	col |= col << 8;
629	col |= col << 16;
630	} else
631	col = ((u32 *)(info->pseudo_palette))[fr->color];
632
633	par->wait_engine(par);
634	par->fill_rect(par, fr->dx, fr->dy, fr->width,
635	fr->height, col, fr->rop);
636	}
637
638	static void tridentfb_imageblit(struct fb_info *info,
639	const struct fb_image *img)
640	{
641	struct tridentfb_par *par = info->par;
642	int col, bgcol;
643
644	if ((info->flags & FBINFO_HWACCEL_DISABLED) || img->depth != 1) {
645	cfb_imageblit(info, image: img);
646	return;
647	}
648	if (info->var.bits_per_pixel == 8) {
649	col = img->fg_color;
650	col |= col << 8;
651	col |= col << 16;
652	bgcol = img->bg_color;
653	bgcol |= bgcol << 8;
654	bgcol |= bgcol << 16;
655	} else {
656	col = ((u32 *)(info->pseudo_palette))[img->fg_color];
657	bgcol = ((u32 *)(info->pseudo_palette))[img->bg_color];
658	}
659
660	par->wait_engine(par);
661	if (par->image_blit)
662	par->image_blit(par, img->data, img->dx, img->dy,
663	img->width, img->height, col, bgcol);
664	else
665	cfb_imageblit(info, image: img);
666	}
667
668	static void tridentfb_copyarea(struct fb_info *info,
669	const struct fb_copyarea *ca)
670	{
671	struct tridentfb_par *par = info->par;
672
673	if (info->flags & FBINFO_HWACCEL_DISABLED) {
674	cfb_copyarea(info, area: ca);
675	return;
676	}
677	par->wait_engine(par);
678	par->copy_rect(par, ca->sx, ca->sy, ca->dx, ca->dy,
679	ca->width, ca->height);
680	}
681
682	static int tridentfb_sync(struct fb_info *info)
683	{
684	struct tridentfb_par *par = info->par;
685
686	if (!(info->flags & FBINFO_HWACCEL_DISABLED))
687	par->wait_engine(par);
688	return 0;
689	}
690
691	/*
692	* Hardware access functions
693	*/
694
695	static inline unsigned char read3X4(struct tridentfb_par *par, int reg)
696	{
697	return vga_mm_rcrt(regbase: par->io_virt, reg);
698	}
699
700	static inline void write3X4(struct tridentfb_par *par, int reg,
701	unsigned char val)
702	{
703	vga_mm_wcrt(regbase: par->io_virt, reg, val);
704	}
705
706	static inline unsigned char read3CE(struct tridentfb_par *par,
707	unsigned char reg)
708	{
709	return vga_mm_rgfx(regbase: par->io_virt, reg);
710	}
711
712	static inline void writeAttr(struct tridentfb_par *par, int reg,
713	unsigned char val)
714	{
715	fb_readb(addr: par->io_virt + VGA_IS1_RC); /* flip-flop to index */
716	vga_mm_wattr(regbase: par->io_virt, reg, val);
717	}
718
719	static inline void write3CE(struct tridentfb_par *par, int reg,
720	unsigned char val)
721	{
722	vga_mm_wgfx(regbase: par->io_virt, reg, val);
723	}
724
725	static void enable_mmio(struct tridentfb_par *par)
726	{
727	/* Goto New Mode */
728	vga_io_rseq(reg: 0x0B);
729
730	/* Unprotect registers */
731	vga_io_wseq(NewMode1, val: 0x80);
732	if (!is_oldprotect(id: par->chip_id))
733	vga_io_wseq(Protection, val: 0x92);
734
735	/* Enable MMIO */
736	outb(PCIReg, port: 0x3D4);
737	outb(inb(port: 0x3D5) | 0x01, port: 0x3D5);
738	}
739
740	static void disable_mmio(struct tridentfb_par *par)
741	{
742	/* Goto New Mode */
743	vga_mm_rseq(regbase: par->io_virt, reg: 0x0B);
744
745	/* Unprotect registers */
746	vga_mm_wseq(regbase: par->io_virt, NewMode1, val: 0x80);
747	if (!is_oldprotect(id: par->chip_id))
748	vga_mm_wseq(regbase: par->io_virt, Protection, val: 0x92);
749
750	/* Disable MMIO */
751	t_outb(p: par, PCIReg, reg: 0x3D4);
752	t_outb(p: par, val: t_inb(p: par, reg: 0x3D5) & ~0x01, reg: 0x3D5);
753	}
754
755	static inline void crtc_unlock(struct tridentfb_par *par)
756	{
757	write3X4(par, VGA_CRTC_V_SYNC_END,
758	val: read3X4(par, VGA_CRTC_V_SYNC_END) & 0x7F);
759	}
760
761	/* Return flat panel's maximum x resolution */
762	static int get_nativex(struct tridentfb_par *par)
763	{
764	int x, y, tmp;
765
766	if (nativex)
767	return nativex;
768
769	tmp = (read3CE(par, VertStretch) >> 4) & 3;
770
771	switch (tmp) {
772	case 0:
773	x = 1280; y = 1024;
774	break;
775	case 2:
776	x = 1024; y = 768;
777	break;
778	case 3:
779	x = 800; y = 600;
780	break;
781	case 1:
782	default:
783	x = 640; y = 480;
784	break;
785	}
786
787	output("%dx%d flat panel found\n", x, y);
788	return x;
789	}
790
791	/* Set pitch */
792	static inline void set_lwidth(struct tridentfb_par *par, int width)
793	{
794	write3X4(par, VGA_CRTC_OFFSET, val: width & 0xFF);
795	/* chips older than TGUI9660 have only 1 width bit in AddColReg */
796	/* touching the other one breaks I2C/DDC */
797	if (par->chip_id == TGUI9440 || par->chip_id == CYBER9320)
798	write3X4(par, AddColReg,
799	val: (read3X4(par, AddColReg) & 0xEF) | ((width & 0x100) >> 4));
800	else
801	write3X4(par, AddColReg,
802	val: (read3X4(par, AddColReg) & 0xCF) | ((width & 0x300) >> 4));
803	}
804
805	/* For resolutions smaller than FP resolution stretch */
806	static void screen_stretch(struct tridentfb_par *par)
807	{
808	if (par->chip_id != CYBERBLADEXPAi1)
809	write3CE(par, BiosReg, val: 0);
810	else
811	write3CE(par, BiosReg, val: 8);
812	write3CE(par, VertStretch, val: (read3CE(par, VertStretch) & 0x7C) | 1);
813	write3CE(par, HorStretch, val: (read3CE(par, HorStretch) & 0x7C) | 1);
814	}
815
816	/* For resolutions smaller than FP resolution center */
817	static inline void screen_center(struct tridentfb_par *par)
818	{
819	write3CE(par, VertStretch, val: (read3CE(par, VertStretch) & 0x7C) | 0x80);
820	write3CE(par, HorStretch, val: (read3CE(par, HorStretch) & 0x7C) | 0x80);
821	}
822
823	/* Address of first shown pixel in display memory */
824	static void set_screen_start(struct tridentfb_par *par, int base)
825	{
826	u8 tmp;
827	write3X4(par, VGA_CRTC_START_LO, val: base & 0xFF);
828	write3X4(par, VGA_CRTC_START_HI, val: (base & 0xFF00) >> 8);
829	tmp = read3X4(par, CRTCModuleTest) & 0xDF;
830	write3X4(par, CRTCModuleTest, val: tmp | ((base & 0x10000) >> 11));
831	tmp = read3X4(par, CRTHiOrd) & 0xF8;
832	write3X4(par, CRTHiOrd, val: tmp | ((base & 0xE0000) >> 17));
833	}
834
835	/* Set dotclock frequency */
836	static void set_vclk(struct tridentfb_par *par, unsigned long freq)
837	{
838	int m, n, k;
839	unsigned long fi, d, di;
840	unsigned char best_m = 0, best_n = 0, best_k = 0;
841	unsigned char hi, lo;
842	unsigned char shift = !is_oldclock(id: par->chip_id) ? 2 : 1;
843
844	d = 20000;
845	for (k = shift; k >= 0; k--)
846	for (m = 1; m < 32; m++) {
847	n = ((m + 2) << shift) - 8;
848	for (n = (n < 0 ? 0 : n); n < 122; n++) {
849	fi = ((14318l * (n + 8)) / (m + 2)) >> k;
850	di = abs(fi - freq);
851	if (di < d || (di == d && k == best_k)) {
852	d = di;
853	best_n = n;
854	best_m = m;
855	best_k = k;
856	}
857	if (fi > freq)
858	break;
859	}
860	}
861
862	if (is_oldclock(id: par->chip_id)) {
863	lo = best_n | (best_m << 7);
864	hi = (best_m >> 1) | (best_k << 4);
865	} else {
866	lo = best_n;
867	hi = best_m | (best_k << 6);
868	}
869
870	if (is3Dchip(id: par->chip_id)) {
871	vga_mm_wseq(regbase: par->io_virt, ClockHigh, val: hi);
872	vga_mm_wseq(regbase: par->io_virt, ClockLow, val: lo);
873	} else {
874	t_outb(p: par, val: lo, reg: 0x43C8);
875	t_outb(p: par, val: hi, reg: 0x43C9);
876	}
877	debug("VCLK = %X %X\n", hi, lo);
878	}
879
880	/* Set number of lines for flat panels*/
881	static void set_number_of_lines(struct tridentfb_par *par, int lines)
882	{
883	int tmp = read3CE(par, CyberEnhance) & 0x8F;
884	if (lines > 1024)
885	tmp |= 0x50;
886	else if (lines > 768)
887	tmp |= 0x30;
888	else if (lines > 600)
889	tmp |= 0x20;
890	else if (lines > 480)
891	tmp |= 0x10;
892	write3CE(par, CyberEnhance, val: tmp);
893	}
894
895	/*
896	* If we see that FP is active we assume we have one.
897	* Otherwise we have a CRT display. User can override.
898	*/
899	static int is_flatpanel(struct tridentfb_par *par)
900	{
901	if (fp)
902	return 1;
903	if (crt || !iscyber(id: par->chip_id))
904	return 0;
905	return (read3CE(par, FPConfig) & 0x10) ? 1 : 0;
906	}
907
908	/* Try detecting the video memory size */
909	static unsigned int get_memsize(struct tridentfb_par *par)
910	{
911	unsigned char tmp, tmp2;
912	unsigned int k;
913
914	/* If memory size provided by user */
915	if (memsize)
916	k = memsize * Kb;
917	else
918	switch (par->chip_id) {
919	case CYBER9525DVD:
920	k = 2560 * Kb;
921	break;
922	default:
923	tmp = read3X4(par, SPR) & 0x0F;
924	switch (tmp) {
925
926	case 0x01:
927	k = 512 * Kb;
928	break;
929	case 0x02:
930	k = 6 * Mb; /* XP */
931	break;
932	case 0x03:
933	k = 1 * Mb;
934	break;
935	case 0x04:
936	k = 8 * Mb;
937	break;
938	case 0x06:
939	k = 10 * Mb; /* XP */
940	break;
941	case 0x07:
942	k = 2 * Mb;
943	break;
944	case 0x08:
945	k = 12 * Mb; /* XP */
946	break;
947	case 0x0A:
948	k = 14 * Mb; /* XP */
949	break;
950	case 0x0C:
951	k = 16 * Mb; /* XP */
952	break;
953	case 0x0E: /* XP */
954
955	tmp2 = vga_mm_rseq(regbase: par->io_virt, reg: 0xC1);
956	switch (tmp2) {
957	case 0x00:
958	k = 20 * Mb;
959	break;
960	case 0x01:
961	k = 24 * Mb;
962	break;
963	case 0x10:
964	k = 28 * Mb;
965	break;
966	case 0x11:
967	k = 32 * Mb;
968	break;
969	default:
970	k = 1 * Mb;
971	break;
972	}
973	break;
974
975	case 0x0F:
976	k = 4 * Mb;
977	break;
978	default:
979	k = 1 * Mb;
980	break;
981	}
982	}
983
984	k -= memdiff * Kb;
985	output("framebuffer size = %d Kb\n", k / Kb);
986	return k;
987	}
988
989	/* See if we can handle the video mode described in var */
990	static int tridentfb_check_var(struct fb_var_screeninfo *var,
991	struct fb_info *info)
992	{
993	struct tridentfb_par *par = info->par;
994	int bpp = var->bits_per_pixel;
995	int line_length;
996	int ramdac = 230000; /* 230MHz for most 3D chips */
997	debug("enter\n");
998
999	if (!var->pixclock)
1000	return -EINVAL;
1001
1002	/* check color depth */
1003	if (bpp == 24)
1004	bpp = var->bits_per_pixel = 32;
1005	if (bpp != 8 && bpp != 16 && bpp != 32)
1006	return -EINVAL;
1007	if (par->chip_id == TGUI9440 && bpp == 32)
1008	return -EINVAL;
1009	/* check whether resolution fits on panel and in memory */
1010	if (par->flatpanel && nativex && var->xres > nativex)
1011	return -EINVAL;
1012	/* various resolution checks */
1013	var->xres = (var->xres + 7) & ~0x7;
1014	if (var->xres > var->xres_virtual)
1015	var->xres_virtual = var->xres;
1016	if (var->yres > var->yres_virtual)
1017	var->yres_virtual = var->yres;
1018	if (var->xres_virtual > 4095 || var->yres > 2048)
1019	return -EINVAL;
1020	/* prevent from position overflow for acceleration */
1021	if (var->yres_virtual > 0xffff)
1022	return -EINVAL;
1023	line_length = var->xres_virtual * bpp / 8;
1024
1025	if (!is3Dchip(id: par->chip_id) &&
1026	!(info->flags & FBINFO_HWACCEL_DISABLED)) {
1027	/* acceleration requires line length to be power of 2 */
1028	if (line_length <= 512)
1029	var->xres_virtual = 512 * 8 / bpp;
1030	else if (line_length <= 1024)
1031	var->xres_virtual = 1024 * 8 / bpp;
1032	else if (line_length <= 2048)
1033	var->xres_virtual = 2048 * 8 / bpp;
1034	else if (line_length <= 4096)
1035	var->xres_virtual = 4096 * 8 / bpp;
1036	else if (line_length <= 8192)
1037	var->xres_virtual = 8192 * 8 / bpp;
1038	else
1039	return -EINVAL;
1040
1041	line_length = var->xres_virtual * bpp / 8;
1042	}
1043
1044	/* datasheet specifies how to set panning only up to 4 MB */
1045	if (line_length * (var->yres_virtual - var->yres) > (4 << 20))
1046	var->yres_virtual = ((4 << 20) / line_length) + var->yres;
1047
1048	if (line_length * var->yres_virtual > info->fix.smem_len)
1049	return -EINVAL;
1050
1051	switch (bpp) {
1052	case 8:
1053	var->red.offset = 0;
1054	var->red.length = 8;
1055	var->green = var->red;
1056	var->blue = var->red;
1057	break;
1058	case 16:
1059	var->red.offset = 11;
1060	var->green.offset = 5;
1061	var->blue.offset = 0;
1062	var->red.length = 5;
1063	var->green.length = 6;
1064	var->blue.length = 5;
1065	break;
1066	case 32:
1067	var->red.offset = 16;
1068	var->green.offset = 8;
1069	var->blue.offset = 0;
1070	var->red.length = 8;
1071	var->green.length = 8;
1072	var->blue.length = 8;
1073	break;
1074	default:
1075	return -EINVAL;
1076	}
1077
1078	if (is_xp(id: par->chip_id))
1079	ramdac = 350000;
1080
1081	switch (par->chip_id) {
1082	case TGUI9440:
1083	ramdac = (bpp >= 16) ? 45000 : 90000;
1084	break;
1085	case CYBER9320:
1086	case TGUI9660:
1087	ramdac = 135000;
1088	break;
1089	case PROVIDIA9685:
1090	case CYBER9388:
1091	case CYBER9382:
1092	case CYBER9385:
1093	ramdac = 170000;
1094	break;
1095	}
1096
1097	/* The clock is doubled for 32 bpp */
1098	if (bpp == 32)
1099	ramdac /= 2;
1100
1101	if (PICOS2KHZ(var->pixclock) > ramdac)
1102	return -EINVAL;
1103
1104	debug("exit\n");
1105
1106	return 0;
1107
1108	}
1109
1110	/* Pan the display */
1111	static int tridentfb_pan_display(struct fb_var_screeninfo *var,
1112	struct fb_info *info)
1113	{
1114	struct tridentfb_par *par = info->par;
1115	unsigned int offset;
1116
1117	debug("enter\n");
1118	offset = (var->xoffset + (var->yoffset * info->var.xres_virtual))
1119	* info->var.bits_per_pixel / 32;
1120	set_screen_start(par, base: offset);
1121	debug("exit\n");
1122	return 0;
1123	}
1124
1125	static inline void shadowmode_on(struct tridentfb_par *par)
1126	{
1127	write3CE(par, CyberControl, val: read3CE(par, CyberControl) | 0x81);
1128	}
1129
1130	/* Set the hardware to the requested video mode */
1131	static int tridentfb_set_par(struct fb_info *info)
1132	{
1133	struct tridentfb_par *par = info->par;
1134	u32 htotal, hdispend, hsyncstart, hsyncend, hblankstart, hblankend;
1135	u32 vtotal, vdispend, vsyncstart, vsyncend, vblankstart, vblankend;
1136	struct fb_var_screeninfo *var = &info->var;
1137	int bpp = var->bits_per_pixel;
1138	unsigned char tmp;
1139	unsigned long vclk;
1140
1141	debug("enter\n");
1142	hdispend = var->xres / 8 - 1;
1143	hsyncstart = (var->xres + var->right_margin) / 8;
1144	hsyncend = (var->xres + var->right_margin + var->hsync_len) / 8;
1145	htotal = (var->xres + var->left_margin + var->right_margin +
1146	var->hsync_len) / 8 - 5;
1147	hblankstart = hdispend + 1;
1148	hblankend = htotal + 3;
1149
1150	vdispend = var->yres - 1;
1151	vsyncstart = var->yres + var->lower_margin;
1152	vsyncend = vsyncstart + var->vsync_len;
1153	vtotal = var->upper_margin + vsyncend - 2;
1154	vblankstart = vdispend + 1;
1155	vblankend = vtotal;
1156
1157	if (info->var.vmode & FB_VMODE_INTERLACED) {
1158	vtotal /= 2;
1159	vdispend /= 2;
1160	vsyncstart /= 2;
1161	vsyncend /= 2;
1162	vblankstart /= 2;
1163	vblankend /= 2;
1164	}
1165
1166	enable_mmio(par);
1167	crtc_unlock(par);
1168	write3CE(par, CyberControl, val: 8);
1169	tmp = 0xEB;
1170	if (var->sync & FB_SYNC_HOR_HIGH_ACT)
1171	tmp &= ~0x40;
1172	if (var->sync & FB_SYNC_VERT_HIGH_ACT)
1173	tmp &= ~0x80;
1174
1175	if (par->flatpanel && var->xres < nativex) {
1176	/*
1177	* on flat panels with native size larger
1178	* than requested resolution decide whether
1179	* we stretch or center
1180	*/
1181	t_outb(p: par, val: tmp | 0xC0, VGA_MIS_W);
1182
1183	shadowmode_on(par);
1184
1185	if (center)
1186	screen_center(par);
1187	else if (stretch)
1188	screen_stretch(par);
1189
1190	} else {
1191	t_outb(p: par, val: tmp, VGA_MIS_W);
1192	write3CE(par, CyberControl, val: 8);
1193	}
1194
1195	/* vertical timing values */
1196	write3X4(par, VGA_CRTC_V_TOTAL, val: vtotal & 0xFF);
1197	write3X4(par, VGA_CRTC_V_DISP_END, val: vdispend & 0xFF);
1198	write3X4(par, VGA_CRTC_V_SYNC_START, val: vsyncstart & 0xFF);
1199	write3X4(par, VGA_CRTC_V_SYNC_END, val: (vsyncend & 0x0F));
1200	write3X4(par, VGA_CRTC_V_BLANK_START, val: vblankstart & 0xFF);
1201	write3X4(par, VGA_CRTC_V_BLANK_END, val: vblankend & 0xFF);
1202
1203	/* horizontal timing values */
1204	write3X4(par, VGA_CRTC_H_TOTAL, val: htotal & 0xFF);
1205	write3X4(par, VGA_CRTC_H_DISP, val: hdispend & 0xFF);
1206	write3X4(par, VGA_CRTC_H_SYNC_START, val: hsyncstart & 0xFF);
1207	write3X4(par, VGA_CRTC_H_SYNC_END,
1208	val: (hsyncend & 0x1F) | ((hblankend & 0x20) << 2));
1209	write3X4(par, VGA_CRTC_H_BLANK_START, val: hblankstart & 0xFF);
1210	write3X4(par, VGA_CRTC_H_BLANK_END, val: hblankend & 0x1F);
1211
1212	/* higher bits of vertical timing values */
1213	tmp = 0x10;
1214	if (vtotal & 0x100) tmp |= 0x01;
1215	if (vdispend & 0x100) tmp |= 0x02;
1216	if (vsyncstart & 0x100) tmp |= 0x04;
1217	if (vblankstart & 0x100) tmp |= 0x08;
1218
1219	if (vtotal & 0x200) tmp |= 0x20;
1220	if (vdispend & 0x200) tmp |= 0x40;
1221	if (vsyncstart & 0x200) tmp |= 0x80;
1222	write3X4(par, VGA_CRTC_OVERFLOW, val: tmp);
1223
1224	tmp = read3X4(par, CRTHiOrd) & 0x07;
1225	tmp |= 0x08; /* line compare bit 10 */
1226	if (vtotal & 0x400) tmp |= 0x80;
1227	if (vblankstart & 0x400) tmp |= 0x40;
1228	if (vsyncstart & 0x400) tmp |= 0x20;
1229	if (vdispend & 0x400) tmp |= 0x10;
1230	write3X4(par, CRTHiOrd, val: tmp);
1231
1232	tmp = (htotal >> 8) & 0x01;
1233	tmp |= (hdispend >> 7) & 0x02;
1234	tmp |= (hsyncstart >> 5) & 0x08;
1235	tmp |= (hblankstart >> 4) & 0x10;
1236	write3X4(par, HorizOverflow, val: tmp);
1237
1238	tmp = 0x40;
1239	if (vblankstart & 0x200) tmp |= 0x20;
1240	//FIXME if (info->var.vmode & FB_VMODE_DOUBLE) tmp |= 0x80; /* double scan for 200 line modes */
1241	write3X4(par, VGA_CRTC_MAX_SCAN, val: tmp);
1242
1243	write3X4(par, VGA_CRTC_LINE_COMPARE, val: 0xFF);
1244	write3X4(par, VGA_CRTC_PRESET_ROW, val: 0);
1245	write3X4(par, VGA_CRTC_MODE, val: 0xC3);
1246
1247	write3X4(par, LinearAddReg, val: 0x20); /* enable linear addressing */
1248
1249	tmp = (info->var.vmode & FB_VMODE_INTERLACED) ? 0x84 : 0x80;
1250	/* enable access extended memory */
1251	write3X4(par, CRTCModuleTest, val: tmp);
1252	tmp = read3CE(par, MiscIntContReg) & ~0x4;
1253	if (info->var.vmode & FB_VMODE_INTERLACED)
1254	tmp |= 0x4;
1255	write3CE(par, MiscIntContReg, val: tmp);
1256
1257	/* enable GE for text acceleration */
1258	write3X4(par, GraphEngReg, val: 0x80);
1259
1260	switch (bpp) {
1261	case 8:
1262	tmp = 0x00;
1263	break;
1264	case 16:
1265	tmp = 0x05;
1266	break;
1267	case 24:
1268	tmp = 0x29;
1269	break;
1270	case 32:
1271	tmp = 0x09;
1272	break;
1273	}
1274
1275	write3X4(par, PixelBusReg, val: tmp);
1276
1277	tmp = read3X4(par, DRAMControl);
1278	if (!is_oldprotect(id: par->chip_id))
1279	tmp |= 0x10;
1280	if (iscyber(id: par->chip_id))
1281	tmp |= 0x20;
1282	write3X4(par, DRAMControl, val: tmp); /* both IO, linear enable */
1283
1284	write3X4(par, InterfaceSel, val: read3X4(par, InterfaceSel) | 0x40);
1285	if (!is_xp(id: par->chip_id))
1286	write3X4(par, Performance, val: read3X4(par, Performance) | 0x10);
1287	/* MMIO & PCI read and write burst enable */
1288	if (par->chip_id != TGUI9440 && par->chip_id != IMAGE975)
1289	write3X4(par, PCIReg, val: read3X4(par, PCIReg) | 0x06);
1290
1291	vga_mm_wseq(regbase: par->io_virt, reg: 0, val: 3);
1292	vga_mm_wseq(regbase: par->io_virt, reg: 1, val: 1); /* set char clock 8 dots wide */
1293	/* enable 4 maps because needed in chain4 mode */
1294	vga_mm_wseq(regbase: par->io_virt, reg: 2, val: 0x0F);
1295	vga_mm_wseq(regbase: par->io_virt, reg: 3, val: 0);
1296	vga_mm_wseq(regbase: par->io_virt, reg: 4, val: 0x0E); /* memory mode enable bitmaps ?? */
1297
1298	/* convert from picoseconds to kHz */
1299	vclk = PICOS2KHZ(info->var.pixclock);
1300
1301	/* divide clock by 2 if 32bpp chain4 mode display and CPU path */
1302	tmp = read3CE(par, MiscExtFunc) & 0xF0;
1303	if (bpp == 32 || (par->chip_id == TGUI9440 && bpp == 16)) {
1304	tmp |= 8;
1305	vclk *= 2;
1306	}
1307	set_vclk(par, freq: vclk);
1308	write3CE(par, MiscExtFunc, val: tmp | 0x12);
1309	write3CE(par, reg: 0x5, val: 0x40); /* no CGA compat, allow 256 col */
1310	write3CE(par, reg: 0x6, val: 0x05); /* graphics mode */
1311	write3CE(par, reg: 0x7, val: 0x0F); /* planes? */
1312
1313	/* graphics mode and support 256 color modes */
1314	writeAttr(par, reg: 0x10, val: 0x41);
1315	writeAttr(par, reg: 0x12, val: 0x0F); /* planes */
1316	writeAttr(par, reg: 0x13, val: 0); /* horizontal pel panning */
1317
1318	/* colors */
1319	for (tmp = 0; tmp < 0x10; tmp++)
1320	writeAttr(par, reg: tmp, val: tmp);
1321	fb_readb(addr: par->io_virt + VGA_IS1_RC); /* flip-flop to index */
1322	t_outb(p: par, val: 0x20, VGA_ATT_W); /* enable attr */
1323
1324	switch (bpp) {
1325	case 8:
1326	tmp = 0;
1327	break;
1328	case 16:
1329	tmp = 0x30;
1330	break;
1331	case 24:
1332	case 32:
1333	tmp = 0xD0;
1334	break;
1335	}
1336
1337	t_inb(p: par, VGA_PEL_IW);
1338	t_inb(p: par, VGA_PEL_MSK);
1339	t_inb(p: par, VGA_PEL_MSK);
1340	t_inb(p: par, VGA_PEL_MSK);
1341	t_inb(p: par, VGA_PEL_MSK);
1342	t_outb(p: par, val: tmp, VGA_PEL_MSK);
1343	t_inb(p: par, VGA_PEL_IW);
1344
1345	if (par->flatpanel)
1346	set_number_of_lines(par, lines: info->var.yres);
1347	info->fix.line_length = info->var.xres_virtual * bpp / 8;
1348	set_lwidth(par, width: info->fix.line_length / 8);
1349
1350	if (!(info->flags & FBINFO_HWACCEL_DISABLED))
1351	par->init_accel(par, info->var.xres_virtual, bpp);
1352
1353	info->fix.visual = (bpp == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
1354	info->cmap.len = (bpp == 8) ? 256 : 16;
1355	debug("exit\n");
1356	return 0;
1357	}
1358
1359	/* Set one color register */
1360	static int tridentfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1361	unsigned blue, unsigned transp,
1362	struct fb_info *info)
1363	{
1364	int bpp = info->var.bits_per_pixel;
1365	struct tridentfb_par *par = info->par;
1366
1367	if (regno >= info->cmap.len)
1368	return 1;
1369
1370	if (bpp == 8) {
1371	t_outb(p: par, val: 0xFF, VGA_PEL_MSK);
1372	t_outb(p: par, val: regno, VGA_PEL_IW);
1373
1374	t_outb(p: par, val: red >> 10, VGA_PEL_D);
1375	t_outb(p: par, val: green >> 10, VGA_PEL_D);
1376	t_outb(p: par, val: blue >> 10, VGA_PEL_D);
1377
1378	} else if (regno < 16) {
1379	if (bpp == 16) { /* RGB 565 */
1380	u32 col;
1381
1382	col = (red & 0xF800) | ((green & 0xFC00) >> 5) |
1383	((blue & 0xF800) >> 11);
1384	col |= col << 16;
1385	((u32 *)(info->pseudo_palette))[regno] = col;
1386	} else if (bpp == 32) /* ARGB 8888 */
1387	((u32 *)info->pseudo_palette)[regno] =
1388	((transp & 0xFF00) << 16) |
1389	((red & 0xFF00) << 8) |
1390	((green & 0xFF00)) |
1391	((blue & 0xFF00) >> 8);
1392	}
1393
1394	return 0;
1395	}
1396
1397	/* Try blanking the screen. For flat panels it does nothing */
1398	static int tridentfb_blank(int blank_mode, struct fb_info *info)
1399	{
1400	unsigned char PMCont, DPMSCont;
1401	struct tridentfb_par *par = info->par;
1402
1403	debug("enter\n");
1404	if (par->flatpanel)
1405	return 0;
1406	t_outb(p: par, val: 0x04, reg: 0x83C8); /* Read DPMS Control */
1407	PMCont = t_inb(p: par, reg: 0x83C6) & 0xFC;
1408	DPMSCont = read3CE(par, PowerStatus) & 0xFC;
1409	switch (blank_mode) {
1410	case FB_BLANK_UNBLANK:
1411	/* Screen: On, HSync: On, VSync: On */
1412	case FB_BLANK_NORMAL:
1413	/* Screen: Off, HSync: On, VSync: On */
1414	PMCont |= 0x03;
1415	DPMSCont |= 0x00;
1416	break;
1417	case FB_BLANK_HSYNC_SUSPEND:
1418	/* Screen: Off, HSync: Off, VSync: On */
1419	PMCont |= 0x02;
1420	DPMSCont |= 0x01;
1421	break;
1422	case FB_BLANK_VSYNC_SUSPEND:
1423	/* Screen: Off, HSync: On, VSync: Off */
1424	PMCont |= 0x02;
1425	DPMSCont |= 0x02;
1426	break;
1427	case FB_BLANK_POWERDOWN:
1428	/* Screen: Off, HSync: Off, VSync: Off */
1429	PMCont |= 0x00;
1430	DPMSCont |= 0x03;
1431	break;
1432	}
1433
1434	write3CE(par, PowerStatus, val: DPMSCont);
1435	t_outb(p: par, val: 4, reg: 0x83C8);
1436	t_outb(p: par, val: PMCont, reg: 0x83C6);
1437
1438	debug("exit\n");
1439
1440	/* let fbcon do a softblank for us */
1441	return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0;
1442	}
1443
1444	static const struct fb_ops tridentfb_ops = {
1445	.owner = THIS_MODULE,
1446	__FB_DEFAULT_IOMEM_OPS_RDWR,
1447	.fb_setcolreg = tridentfb_setcolreg,
1448	.fb_pan_display = tridentfb_pan_display,
1449	.fb_blank = tridentfb_blank,
1450	.fb_check_var = tridentfb_check_var,
1451	.fb_set_par = tridentfb_set_par,
1452	.fb_fillrect = tridentfb_fillrect,
1453	.fb_copyarea = tridentfb_copyarea,
1454	.fb_imageblit = tridentfb_imageblit,
1455	.fb_sync = tridentfb_sync,
1456	__FB_DEFAULT_IOMEM_OPS_MMAP,
1457	};
1458
1459	static int trident_pci_probe(struct pci_dev *dev,
1460	const struct pci_device_id *id)
1461	{
1462	int err;
1463	unsigned char revision;
1464	struct fb_info *info;
1465	struct tridentfb_par *default_par;
1466	int chip3D;
1467	int chip_id;
1468	bool found = false;
1469
1470	err = aperture_remove_conflicting_pci_devices(pdev: dev, name: "tridentfb");
1471	if (err)
1472	return err;
1473
1474	err = pcim_enable_device(pdev: dev);
1475	if (err)
1476	return err;
1477
1478	info = framebuffer_alloc(size: sizeof(struct tridentfb_par), dev: &dev->dev);
1479	if (!info)
1480	return -ENOMEM;
1481	default_par = info->par;
1482
1483	chip_id = id->device;
1484
1485	/* If PCI id is 0x9660 then further detect chip type */
1486
1487	if (chip_id == TGUI9660) {
1488	revision = vga_io_rseq(RevisionID);
1489
1490	switch (revision) {
1491	case 0x21:
1492	chip_id = PROVIDIA9685;
1493	break;
1494	case 0x22:
1495	case 0x23:
1496	chip_id = CYBER9397;
1497	break;
1498	case 0x2A:
1499	chip_id = CYBER9397DVD;
1500	break;
1501	case 0x30:
1502	case 0x33:
1503	case 0x34:
1504	case 0x35:
1505	case 0x38:
1506	case 0x3A:
1507	case 0xB3:
1508	chip_id = CYBER9385;
1509	break;
1510	case 0x40 ... 0x43:
1511	chip_id = CYBER9382;
1512	break;
1513	case 0x4A:
1514	chip_id = CYBER9388;
1515	break;
1516	default:
1517	break;
1518	}
1519	}
1520
1521	chip3D = is3Dchip(id: chip_id);
1522
1523	if (is_xp(id: chip_id)) {
1524	default_par->init_accel = xp_init_accel;
1525	default_par->wait_engine = xp_wait_engine;
1526	default_par->fill_rect = xp_fill_rect;
1527	default_par->copy_rect = xp_copy_rect;
1528	tridentfb_fix.accel = FB_ACCEL_TRIDENT_BLADEXP;
1529	} else if (is_blade(id: chip_id)) {
1530	default_par->init_accel = blade_init_accel;
1531	default_par->wait_engine = blade_wait_engine;
1532	default_par->fill_rect = blade_fill_rect;
1533	default_par->copy_rect = blade_copy_rect;
1534	default_par->image_blit = blade_image_blit;
1535	tridentfb_fix.accel = FB_ACCEL_TRIDENT_BLADE3D;
1536	} else if (chip3D) { /* 3DImage family left */
1537	default_par->init_accel = image_init_accel;
1538	default_par->wait_engine = image_wait_engine;
1539	default_par->fill_rect = image_fill_rect;
1540	default_par->copy_rect = image_copy_rect;
1541	tridentfb_fix.accel = FB_ACCEL_TRIDENT_3DIMAGE;
1542	} else { /* TGUI 9440/96XX family */
1543	default_par->init_accel = tgui_init_accel;
1544	default_par->wait_engine = xp_wait_engine;
1545	default_par->fill_rect = tgui_fill_rect;
1546	default_par->copy_rect = tgui_copy_rect;
1547	tridentfb_fix.accel = FB_ACCEL_TRIDENT_TGUI;
1548	}
1549
1550	default_par->chip_id = chip_id;
1551
1552	/* setup MMIO region */
1553	tridentfb_fix.mmio_start = pci_resource_start(dev, 1);
1554	tridentfb_fix.mmio_len = pci_resource_len(dev, 1);
1555
1556	if (!request_mem_region(tridentfb_fix.mmio_start,
1557	tridentfb_fix.mmio_len, "tridentfb")) {
1558	debug("request_region failed!\n");
1559	framebuffer_release(info);
1560	return -1;
1561	}
1562
1563	default_par->io_virt = ioremap(offset: tridentfb_fix.mmio_start,
1564	size: tridentfb_fix.mmio_len);
1565
1566	if (!default_par->io_virt) {
1567	debug("ioremap failed\n");
1568	err = -1;
1569	goto out_unmap1;
1570	}
1571
1572	enable_mmio(par: default_par);
1573
1574	/* setup framebuffer memory */
1575	tridentfb_fix.smem_start = pci_resource_start(dev, 0);
1576	tridentfb_fix.smem_len = get_memsize(par: default_par);
1577
1578	if (!request_mem_region(tridentfb_fix.smem_start,
1579	tridentfb_fix.smem_len, "tridentfb")) {
1580	debug("request_mem_region failed!\n");
1581	disable_mmio(par: info->par);
1582	err = -1;
1583	goto out_unmap1;
1584	}
1585
1586	info->screen_base = ioremap(offset: tridentfb_fix.smem_start,
1587	size: tridentfb_fix.smem_len);
1588
1589	if (!info->screen_base) {
1590	debug("ioremap failed\n");
1591	err = -1;
1592	goto out_unmap2;
1593	}
1594
1595	default_par->flatpanel = is_flatpanel(par: default_par);
1596
1597	if (default_par->flatpanel)
1598	nativex = get_nativex(par: default_par);
1599
1600	info->fix = tridentfb_fix;
1601	info->fbops = &tridentfb_ops;
1602	info->pseudo_palette = default_par->pseudo_pal;
1603
1604	info->flags = FBINFO_HWACCEL_YPAN;
1605	if (!noaccel && default_par->init_accel) {
1606	info->flags &= ~FBINFO_HWACCEL_DISABLED;
1607	info->flags |= FBINFO_HWACCEL_COPYAREA;
1608	info->flags |= FBINFO_HWACCEL_FILLRECT;
1609	} else
1610	info->flags |= FBINFO_HWACCEL_DISABLED;
1611
1612	if (is_blade(id: chip_id) && chip_id != BLADE3D)
1613	info->flags |= FBINFO_READS_FAST;
1614
1615	info->pixmap.addr = kmalloc(4096, GFP_KERNEL);
1616	if (!info->pixmap.addr) {
1617	err = -ENOMEM;
1618	goto out_unmap2;
1619	}
1620
1621	info->pixmap.size = 4096;
1622	info->pixmap.buf_align = 4;
1623	info->pixmap.scan_align = 1;
1624	info->pixmap.access_align = 32;
1625	info->pixmap.flags = FB_PIXMAP_SYSTEM;
1626	info->var.bits_per_pixel = 8;
1627
1628	if (default_par->image_blit) {
1629	info->flags |= FBINFO_HWACCEL_IMAGEBLIT;
1630	info->pixmap.scan_align = 4;
1631	}
1632
1633	if (noaccel) {
1634	dev_dbg(&dev->dev, "disabling acceleration\n");
1635	info->flags |= FBINFO_HWACCEL_DISABLED;
1636	info->pixmap.scan_align = 1;
1637	}
1638
1639	if (tridentfb_setup_ddc_bus(info) == 0) {
1640	u8 *edid = fb_ddc_read(adapter: &default_par->ddc_adapter);
1641
1642	default_par->ddc_registered = true;
1643	if (edid) {
1644	fb_edid_to_monspecs(edid, specs: &info->monspecs);
1645	kfree(objp: edid);
1646	if (!info->monspecs.modedb)
1647	dev_err(info->device, "error getting mode database\n");
1648	else {
1649	const struct fb_videomode *m;
1650
1651	fb_videomode_to_modelist(modedb: info->monspecs.modedb,
1652	num: info->monspecs.modedb_len,
1653	head: &info->modelist);
1654	m = fb_find_best_display(specs: &info->monspecs,
1655	head: &info->modelist);
1656	if (m) {
1657	fb_videomode_to_var(var: &info->var, mode: m);
1658	/* fill all other info->var's fields */
1659	if (tridentfb_check_var(var: &info->var,
1660	info) == 0)
1661	found = true;
1662	}
1663	}
1664	}
1665	}
1666
1667	if (!mode_option && !found)
1668	mode_option = "640x480-8@60";
1669
1670	/* Prepare startup mode */
1671	if (mode_option) {
1672	err = fb_find_mode(var: &info->var, info, mode_option,
1673	db: info->monspecs.modedb,
1674	dbsize: info->monspecs.modedb_len,
1675	NULL, default_bpp: info->var.bits_per_pixel);
1676	if (!err || err == 4) {
1677	err = -EINVAL;
1678	dev_err(info->device, "mode %s not found\n",
1679	mode_option);
1680	fb_destroy_modedb(modedb: info->monspecs.modedb);
1681	info->monspecs.modedb = NULL;
1682	goto out_unmap2;
1683	}
1684	}
1685
1686	fb_destroy_modedb(modedb: info->monspecs.modedb);
1687	info->monspecs.modedb = NULL;
1688
1689	err = fb_alloc_cmap(cmap: &info->cmap, len: 256, transp: 0);
1690	if (err < 0)
1691	goto out_unmap2;
1692
1693	info->var.activate |= FB_ACTIVATE_NOW;
1694	info->device = &dev->dev;
1695	if (register_framebuffer(fb_info: info) < 0) {
1696	dev_err(&dev->dev, "could not register framebuffer\n");
1697	fb_dealloc_cmap(cmap: &info->cmap);
1698	err = -EINVAL;
1699	goto out_unmap2;
1700	}
1701	output("fb%d: %s frame buffer device %dx%d-%dbpp\n",
1702	info->node, info->fix.id, info->var.xres,
1703	info->var.yres, info->var.bits_per_pixel);
1704
1705	pci_set_drvdata(pdev: dev, data: info);
1706	return 0;
1707
1708	out_unmap2:
1709	if (default_par->ddc_registered)
1710	i2c_del_adapter(adap: &default_par->ddc_adapter);
1711	kfree(objp: info->pixmap.addr);
1712	if (info->screen_base)
1713	iounmap(addr: info->screen_base);
1714	disable_mmio(par: info->par);
1715	out_unmap1:
1716	if (default_par->io_virt)
1717	iounmap(addr: default_par->io_virt);
1718	framebuffer_release(info);
1719	return err;
1720	}
1721
1722	static void trident_pci_remove(struct pci_dev *dev)
1723	{
1724	struct fb_info *info = pci_get_drvdata(pdev: dev);
1725	struct tridentfb_par *par = info->par;
1726
1727	unregister_framebuffer(fb_info: info);
1728	if (par->ddc_registered)
1729	i2c_del_adapter(adap: &par->ddc_adapter);
1730	iounmap(addr: par->io_virt);
1731	iounmap(addr: info->screen_base);
1732	kfree(objp: info->pixmap.addr);
1733	fb_dealloc_cmap(cmap: &info->cmap);
1734	framebuffer_release(info);
1735	}
1736
1737	/* List of boards that we are trying to support */
1738	static const struct pci_device_id trident_devices[] = {
1739	{PCI_VENDOR_ID_TRIDENT, BLADE3D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1740	{PCI_VENDOR_ID_TRIDENT, CYBERBLADEi7, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1741	{PCI_VENDOR_ID_TRIDENT, CYBERBLADEi7D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1742	{PCI_VENDOR_ID_TRIDENT, CYBERBLADEi1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1743	{PCI_VENDOR_ID_TRIDENT, CYBERBLADEi1D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1744	{PCI_VENDOR_ID_TRIDENT, CYBERBLADEAi1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1745	{PCI_VENDOR_ID_TRIDENT, CYBERBLADEAi1D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1746	{PCI_VENDOR_ID_TRIDENT, CYBERBLADEE4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1747	{PCI_VENDOR_ID_TRIDENT, TGUI9440, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1748	{PCI_VENDOR_ID_TRIDENT, TGUI9660, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1749	{PCI_VENDOR_ID_TRIDENT, IMAGE975, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1750	{PCI_VENDOR_ID_TRIDENT, IMAGE985, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1751	{PCI_VENDOR_ID_TRIDENT, CYBER9320, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1752	{PCI_VENDOR_ID_TRIDENT, CYBER9388, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1753	{PCI_VENDOR_ID_TRIDENT, CYBER9520, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1754	{PCI_VENDOR_ID_TRIDENT, CYBER9525DVD, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1755	{PCI_VENDOR_ID_TRIDENT, CYBER9397, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1756	{PCI_VENDOR_ID_TRIDENT, CYBER9397DVD, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1757	{PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPAi1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1758	{PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPm8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1759	{PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPm16, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1760	{0,}
1761	};
1762
1763	MODULE_DEVICE_TABLE(pci, trident_devices);
1764
1765	static struct pci_driver tridentfb_pci_driver = {
1766	.name = "tridentfb",
1767	.id_table = trident_devices,
1768	.probe = trident_pci_probe,
1769	.remove = trident_pci_remove,
1770	};
1771
1772	/*
1773	* Parse user specified options (`video=trident:')
1774	* example:
1775	* video=trident:800x600,bpp=16,noaccel
1776	*/
1777	#ifndef MODULE
1778	static int __init tridentfb_setup(char *options)
1779	{
1780	char *opt;
1781	if (!options || !*options)
1782	return 0;
1783	while ((opt = strsep(&options, ",")) != NULL) {
1784	if (!*opt)
1785	continue;
1786	if (!strncmp(opt, "noaccel", 7))
1787	noaccel = 1;
1788	else if (!strncmp(opt, "fp", 2))
1789	fp = 1;
1790	else if (!strncmp(opt, "crt", 3))
1791	fp = 0;
1792	else if (!strncmp(opt, "bpp=", 4))
1793	bpp = simple_strtoul(opt + 4, NULL, 0);
1794	else if (!strncmp(opt, "center", 6))
1795	center = 1;
1796	else if (!strncmp(opt, "stretch", 7))
1797	stretch = 1;
1798	else if (!strncmp(opt, "memsize=", 8))
1799	memsize = simple_strtoul(opt + 8, NULL, 0);
1800	else if (!strncmp(opt, "memdiff=", 8))
1801	memdiff = simple_strtoul(opt + 8, NULL, 0);
1802	else if (!strncmp(opt, "nativex=", 8))
1803	nativex = simple_strtoul(opt + 8, NULL, 0);
1804	else
1805	mode_option = opt;
1806	}
1807	return 0;
1808	}
1809	#endif
1810
1811	static int __init tridentfb_init(void)
1812	{
1813	#ifndef MODULE
1814	char *option = NULL;
1815	#endif
1816
1817	if (fb_modesetting_disabled(drvname: "tridentfb"))
1818	return -ENODEV;
1819
1820	#ifndef MODULE
1821	if (fb_get_options(name: "tridentfb", option: &option))
1822	return -ENODEV;
1823	tridentfb_setup(options: option);
1824	#endif
1825	return pci_register_driver(&tridentfb_pci_driver);
1826	}
1827
1828	static void __exit tridentfb_exit(void)
1829	{
1830	pci_unregister_driver(dev: &tridentfb_pci_driver);
1831	}
1832
1833	module_init(tridentfb_init);
1834	module_exit(tridentfb_exit);
1835
1836	MODULE_AUTHOR("Jani Monoses <jani@iv.ro>");
1837	MODULE_DESCRIPTION("Framebuffer driver for Trident cards");
1838	MODULE_LICENSE("GPL");
1839	MODULE_ALIAS("cyblafb");
1840
1841