Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * drivers/video/cirrusfb.c - driver for Cirrus Logic chipsets | |
3 | * | |
4 | * Copyright 1999-2001 Jeff Garzik <jgarzik@pobox.com> | |
5 | * | |
6 | * Contributors (thanks, all!) | |
7 | * | |
8 | * David Eger: | |
9 | * Overhaul for Linux 2.6 | |
10 | * | |
11 | * Jeff Rugen: | |
12 | * Major contributions; Motorola PowerStack (PPC and PCI) support, | |
13 | * GD54xx, 1280x1024 mode support, change MCLK based on VCLK. | |
14 | * | |
15 | * Geert Uytterhoeven: | |
16 | * Excellent code review. | |
17 | * | |
18 | * Lars Hecking: | |
19 | * Amiga updates and testing. | |
20 | * | |
21 | * Original cirrusfb author: Frank Neumann | |
22 | * | |
23 | * Based on retz3fb.c and cirrusfb.c: | |
24 | * Copyright (C) 1997 Jes Sorensen | |
25 | * Copyright (C) 1996 Frank Neumann | |
26 | * | |
27 | *************************************************************** | |
28 | * | |
29 | * Format this code with GNU indent '-kr -i8 -pcs' options. | |
30 | * | |
31 | * This file is subject to the terms and conditions of the GNU General Public | |
32 | * License. See the file COPYING in the main directory of this archive | |
33 | * for more details. | |
34 | * | |
35 | */ | |
36 | ||
37 | #define CIRRUSFB_VERSION "2.0-pre2" | |
38 | ||
1da177e4 LT |
39 | #include <linux/module.h> |
40 | #include <linux/kernel.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/string.h> | |
43 | #include <linux/mm.h> | |
1da177e4 LT |
44 | #include <linux/slab.h> |
45 | #include <linux/delay.h> | |
46 | #include <linux/fb.h> | |
47 | #include <linux/init.h> | |
1da177e4 LT |
48 | #include <asm/pgtable.h> |
49 | ||
50 | #ifdef CONFIG_ZORRO | |
51 | #include <linux/zorro.h> | |
52 | #endif | |
53 | #ifdef CONFIG_PCI | |
54 | #include <linux/pci.h> | |
55 | #endif | |
56 | #ifdef CONFIG_AMIGA | |
57 | #include <asm/amigahw.h> | |
58 | #endif | |
59 | #ifdef CONFIG_PPC_PREP | |
e8222502 | 60 | #include <asm/machdep.h> |
8503df65 | 61 | #define isPReP machine_is(prep) |
1da177e4 LT |
62 | #else |
63 | #define isPReP 0 | |
64 | #endif | |
65 | ||
0ff1edee KH |
66 | #include <video/vga.h> |
67 | #include <video/cirrus.h> | |
1da177e4 | 68 | |
1da177e4 LT |
69 | /***************************************************************** |
70 | * | |
71 | * debugging and utility macros | |
72 | * | |
73 | */ | |
74 | ||
75 | /* enable debug output? */ | |
76 | /* #define CIRRUSFB_DEBUG 1 */ | |
77 | ||
78 | /* disable runtime assertions? */ | |
79 | /* #define CIRRUSFB_NDEBUG */ | |
80 | ||
81 | /* debug output */ | |
82 | #ifdef CIRRUSFB_DEBUG | |
8503df65 | 83 | #define DPRINTK(fmt, args...) \ |
5ae12170 | 84 | printk(KERN_DEBUG "%s: " fmt, __func__ , ## args) |
1da177e4 LT |
85 | #else |
86 | #define DPRINTK(fmt, args...) | |
87 | #endif | |
88 | ||
89 | /* debugging assertions */ | |
90 | #ifndef CIRRUSFB_NDEBUG | |
91 | #define assert(expr) \ | |
8503df65 KH |
92 | if (!(expr)) { \ |
93 | printk("Assertion failed! %s,%s,%s,line=%d\n", \ | |
5ae12170 | 94 | #expr, __FILE__, __func__, __LINE__); \ |
8503df65 | 95 | } |
1da177e4 LT |
96 | #else |
97 | #define assert(expr) | |
98 | #endif | |
99 | ||
8503df65 | 100 | #define MB_ (1024 * 1024) |
1da177e4 | 101 | |
1da177e4 LT |
102 | /***************************************************************** |
103 | * | |
104 | * chipset information | |
105 | * | |
106 | */ | |
107 | ||
108 | /* board types */ | |
7345de32 | 109 | enum cirrus_board { |
1da177e4 LT |
110 | BT_NONE = 0, |
111 | BT_SD64, | |
112 | BT_PICCOLO, | |
113 | BT_PICASSO, | |
114 | BT_SPECTRUM, | |
115 | BT_PICASSO4, /* GD5446 */ | |
116 | BT_ALPINE, /* GD543x/4x */ | |
117 | BT_GD5480, | |
118 | BT_LAGUNA, /* GD546x */ | |
7345de32 | 119 | }; |
1da177e4 | 120 | |
1da177e4 LT |
121 | /* |
122 | * per-board-type information, used for enumerating and abstracting | |
123 | * chip-specific information | |
7345de32 | 124 | * NOTE: MUST be in the same order as enum cirrus_board in order to |
1da177e4 LT |
125 | * use direct indexing on this array |
126 | * NOTE: '__initdata' cannot be used as some of this info | |
127 | * is required at runtime. Maybe separate into an init-only and | |
128 | * a run-time table? | |
129 | */ | |
130 | static const struct cirrusfb_board_info_rec { | |
131 | char *name; /* ASCII name of chipset */ | |
132 | long maxclock[5]; /* maximum video clock */ | |
133 | /* for 1/4bpp, 8bpp 15/16bpp, 24bpp, 32bpp - numbers from xorg code */ | |
c930faae RK |
134 | bool init_sr07 : 1; /* init SR07 during init_vgachip() */ |
135 | bool init_sr1f : 1; /* write SR1F during init_vgachip() */ | |
8503df65 KH |
136 | /* construct bit 19 of screen start address */ |
137 | bool scrn_start_bit19 : 1; | |
1da177e4 LT |
138 | |
139 | /* initial SR07 value, then for each mode */ | |
140 | unsigned char sr07; | |
141 | unsigned char sr07_1bpp; | |
142 | unsigned char sr07_1bpp_mux; | |
143 | unsigned char sr07_8bpp; | |
144 | unsigned char sr07_8bpp_mux; | |
145 | ||
146 | unsigned char sr1f; /* SR1F VGA initial register value */ | |
147 | } cirrusfb_board_info[] = { | |
148 | [BT_SD64] = { | |
149 | .name = "CL SD64", | |
150 | .maxclock = { | |
151 | /* guess */ | |
152 | /* the SD64/P4 have a higher max. videoclock */ | |
153 | 140000, 140000, 140000, 140000, 140000, | |
154 | }, | |
c930faae RK |
155 | .init_sr07 = true, |
156 | .init_sr1f = true, | |
157 | .scrn_start_bit19 = true, | |
1da177e4 LT |
158 | .sr07 = 0xF0, |
159 | .sr07_1bpp = 0xF0, | |
160 | .sr07_8bpp = 0xF1, | |
161 | .sr1f = 0x20 | |
162 | }, | |
163 | [BT_PICCOLO] = { | |
164 | .name = "CL Piccolo", | |
165 | .maxclock = { | |
166 | /* guess */ | |
167 | 90000, 90000, 90000, 90000, 90000 | |
168 | }, | |
c930faae RK |
169 | .init_sr07 = true, |
170 | .init_sr1f = true, | |
171 | .scrn_start_bit19 = false, | |
1da177e4 LT |
172 | .sr07 = 0x80, |
173 | .sr07_1bpp = 0x80, | |
174 | .sr07_8bpp = 0x81, | |
175 | .sr1f = 0x22 | |
176 | }, | |
177 | [BT_PICASSO] = { | |
178 | .name = "CL Picasso", | |
179 | .maxclock = { | |
180 | /* guess */ | |
181 | 90000, 90000, 90000, 90000, 90000 | |
182 | }, | |
c930faae RK |
183 | .init_sr07 = true, |
184 | .init_sr1f = true, | |
185 | .scrn_start_bit19 = false, | |
1da177e4 LT |
186 | .sr07 = 0x20, |
187 | .sr07_1bpp = 0x20, | |
188 | .sr07_8bpp = 0x21, | |
189 | .sr1f = 0x22 | |
190 | }, | |
191 | [BT_SPECTRUM] = { | |
192 | .name = "CL Spectrum", | |
193 | .maxclock = { | |
194 | /* guess */ | |
195 | 90000, 90000, 90000, 90000, 90000 | |
196 | }, | |
c930faae RK |
197 | .init_sr07 = true, |
198 | .init_sr1f = true, | |
199 | .scrn_start_bit19 = false, | |
1da177e4 LT |
200 | .sr07 = 0x80, |
201 | .sr07_1bpp = 0x80, | |
202 | .sr07_8bpp = 0x81, | |
203 | .sr1f = 0x22 | |
204 | }, | |
205 | [BT_PICASSO4] = { | |
206 | .name = "CL Picasso4", | |
207 | .maxclock = { | |
208 | 135100, 135100, 85500, 85500, 0 | |
209 | }, | |
c930faae RK |
210 | .init_sr07 = true, |
211 | .init_sr1f = false, | |
212 | .scrn_start_bit19 = true, | |
1da177e4 LT |
213 | .sr07 = 0x20, |
214 | .sr07_1bpp = 0x20, | |
215 | .sr07_8bpp = 0x21, | |
216 | .sr1f = 0 | |
217 | }, | |
218 | [BT_ALPINE] = { | |
219 | .name = "CL Alpine", | |
220 | .maxclock = { | |
221 | /* for the GD5430. GD5446 can do more... */ | |
222 | 85500, 85500, 50000, 28500, 0 | |
223 | }, | |
c930faae RK |
224 | .init_sr07 = true, |
225 | .init_sr1f = true, | |
226 | .scrn_start_bit19 = true, | |
1da177e4 LT |
227 | .sr07 = 0xA0, |
228 | .sr07_1bpp = 0xA1, | |
229 | .sr07_1bpp_mux = 0xA7, | |
230 | .sr07_8bpp = 0xA1, | |
231 | .sr07_8bpp_mux = 0xA7, | |
232 | .sr1f = 0x1C | |
233 | }, | |
234 | [BT_GD5480] = { | |
235 | .name = "CL GD5480", | |
236 | .maxclock = { | |
237 | 135100, 200000, 200000, 135100, 135100 | |
238 | }, | |
c930faae RK |
239 | .init_sr07 = true, |
240 | .init_sr1f = true, | |
241 | .scrn_start_bit19 = true, | |
1da177e4 LT |
242 | .sr07 = 0x10, |
243 | .sr07_1bpp = 0x11, | |
244 | .sr07_8bpp = 0x11, | |
245 | .sr1f = 0x1C | |
246 | }, | |
247 | [BT_LAGUNA] = { | |
248 | .name = "CL Laguna", | |
249 | .maxclock = { | |
250 | /* guess */ | |
251 | 135100, 135100, 135100, 135100, 135100, | |
252 | }, | |
c930faae RK |
253 | .init_sr07 = false, |
254 | .init_sr1f = false, | |
255 | .scrn_start_bit19 = true, | |
1da177e4 LT |
256 | } |
257 | }; | |
258 | ||
1da177e4 LT |
259 | #ifdef CONFIG_PCI |
260 | #define CHIP(id, btype) \ | |
4153812f | 261 | { PCI_VENDOR_ID_CIRRUS, id, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (btype) } |
1da177e4 LT |
262 | |
263 | static struct pci_device_id cirrusfb_pci_table[] = { | |
8503df65 KH |
264 | CHIP(PCI_DEVICE_ID_CIRRUS_5436, BT_ALPINE), |
265 | CHIP(PCI_DEVICE_ID_CIRRUS_5434_8, BT_ALPINE), | |
266 | CHIP(PCI_DEVICE_ID_CIRRUS_5434_4, BT_ALPINE), | |
267 | CHIP(PCI_DEVICE_ID_CIRRUS_5430, BT_ALPINE), /* GD-5440 is same id */ | |
268 | CHIP(PCI_DEVICE_ID_CIRRUS_7543, BT_ALPINE), | |
269 | CHIP(PCI_DEVICE_ID_CIRRUS_7548, BT_ALPINE), | |
270 | CHIP(PCI_DEVICE_ID_CIRRUS_5480, BT_GD5480), /* MacPicasso likely */ | |
271 | CHIP(PCI_DEVICE_ID_CIRRUS_5446, BT_PICASSO4), /* Picasso 4 is 5446 */ | |
272 | CHIP(PCI_DEVICE_ID_CIRRUS_5462, BT_LAGUNA), /* CL Laguna */ | |
273 | CHIP(PCI_DEVICE_ID_CIRRUS_5464, BT_LAGUNA), /* CL Laguna 3D */ | |
274 | CHIP(PCI_DEVICE_ID_CIRRUS_5465, BT_LAGUNA), /* CL Laguna 3DA*/ | |
1da177e4 LT |
275 | { 0, } |
276 | }; | |
277 | MODULE_DEVICE_TABLE(pci, cirrusfb_pci_table); | |
278 | #undef CHIP | |
279 | #endif /* CONFIG_PCI */ | |
280 | ||
1da177e4 LT |
281 | #ifdef CONFIG_ZORRO |
282 | static const struct zorro_device_id cirrusfb_zorro_table[] = { | |
283 | { | |
284 | .id = ZORRO_PROD_HELFRICH_SD64_RAM, | |
285 | .driver_data = BT_SD64, | |
286 | }, { | |
287 | .id = ZORRO_PROD_HELFRICH_PICCOLO_RAM, | |
288 | .driver_data = BT_PICCOLO, | |
289 | }, { | |
8503df65 | 290 | .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_RAM, |
1da177e4 LT |
291 | .driver_data = BT_PICASSO, |
292 | }, { | |
293 | .id = ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_RAM, | |
294 | .driver_data = BT_SPECTRUM, | |
295 | }, { | |
296 | .id = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z3, | |
297 | .driver_data = BT_PICASSO4, | |
298 | }, | |
299 | { 0 } | |
300 | }; | |
301 | ||
302 | static const struct { | |
303 | zorro_id id2; | |
304 | unsigned long size; | |
305 | } cirrusfb_zorro_table2[] = { | |
306 | [BT_SD64] = { | |
307 | .id2 = ZORRO_PROD_HELFRICH_SD64_REG, | |
308 | .size = 0x400000 | |
309 | }, | |
310 | [BT_PICCOLO] = { | |
311 | .id2 = ZORRO_PROD_HELFRICH_PICCOLO_REG, | |
312 | .size = 0x200000 | |
313 | }, | |
314 | [BT_PICASSO] = { | |
315 | .id2 = ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_REG, | |
316 | .size = 0x200000 | |
317 | }, | |
318 | [BT_SPECTRUM] = { | |
319 | .id2 = ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_REG, | |
320 | .size = 0x200000 | |
321 | }, | |
322 | [BT_PICASSO4] = { | |
323 | .id2 = 0, | |
324 | .size = 0x400000 | |
325 | } | |
326 | }; | |
327 | #endif /* CONFIG_ZORRO */ | |
328 | ||
1da177e4 | 329 | struct cirrusfb_regs { |
486ff387 | 330 | int multiplexing; |
1da177e4 LT |
331 | }; |
332 | ||
1da177e4 | 333 | #ifdef CIRRUSFB_DEBUG |
7345de32 | 334 | enum cirrusfb_dbg_reg_class { |
8503df65 KH |
335 | CRT, |
336 | SEQ | |
7345de32 | 337 | }; |
8503df65 | 338 | #endif /* CIRRUSFB_DEBUG */ |
1da177e4 LT |
339 | |
340 | /* info about board */ | |
341 | struct cirrusfb_info { | |
1da177e4 | 342 | u8 __iomem *regbase; |
7345de32 | 343 | enum cirrus_board btype; |
1da177e4 LT |
344 | unsigned char SFR; /* Shadow of special function register */ |
345 | ||
1da177e4 LT |
346 | struct cirrusfb_regs currentmode; |
347 | int blank_mode; | |
64beab14 | 348 | u32 pseudo_palette[16]; |
1da177e4 | 349 | |
9199ec5c | 350 | void (*unmap)(struct fb_info *info); |
1da177e4 LT |
351 | }; |
352 | ||
55a0dd83 | 353 | static int noaccel __devinitdata; |
a1d35a7a | 354 | static char *mode_option __devinitdata = "640x480@60"; |
1da177e4 LT |
355 | |
356 | /****************************************************************************/ | |
357 | /**** BEGIN PROTOTYPES ******************************************************/ | |
358 | ||
1da177e4 | 359 | /*--- Interface used by the world ------------------------------------------*/ |
8503df65 | 360 | static int cirrusfb_init(void); |
1da177e4 | 361 | #ifndef MODULE |
8503df65 | 362 | static int cirrusfb_setup(char *options); |
1da177e4 LT |
363 | #endif |
364 | ||
8503df65 KH |
365 | static int cirrusfb_open(struct fb_info *info, int user); |
366 | static int cirrusfb_release(struct fb_info *info, int user); | |
367 | static int cirrusfb_setcolreg(unsigned regno, unsigned red, unsigned green, | |
368 | unsigned blue, unsigned transp, | |
369 | struct fb_info *info); | |
370 | static int cirrusfb_check_var(struct fb_var_screeninfo *var, | |
371 | struct fb_info *info); | |
372 | static int cirrusfb_set_par(struct fb_info *info); | |
373 | static int cirrusfb_pan_display(struct fb_var_screeninfo *var, | |
374 | struct fb_info *info); | |
375 | static int cirrusfb_blank(int blank_mode, struct fb_info *info); | |
376 | static void cirrusfb_fillrect(struct fb_info *info, | |
377 | const struct fb_fillrect *region); | |
378 | static void cirrusfb_copyarea(struct fb_info *info, | |
379 | const struct fb_copyarea *area); | |
380 | static void cirrusfb_imageblit(struct fb_info *info, | |
381 | const struct fb_image *image); | |
1da177e4 LT |
382 | |
383 | /* function table of the above functions */ | |
384 | static struct fb_ops cirrusfb_ops = { | |
385 | .owner = THIS_MODULE, | |
386 | .fb_open = cirrusfb_open, | |
387 | .fb_release = cirrusfb_release, | |
388 | .fb_setcolreg = cirrusfb_setcolreg, | |
389 | .fb_check_var = cirrusfb_check_var, | |
390 | .fb_set_par = cirrusfb_set_par, | |
391 | .fb_pan_display = cirrusfb_pan_display, | |
392 | .fb_blank = cirrusfb_blank, | |
393 | .fb_fillrect = cirrusfb_fillrect, | |
394 | .fb_copyarea = cirrusfb_copyarea, | |
395 | .fb_imageblit = cirrusfb_imageblit, | |
1da177e4 LT |
396 | }; |
397 | ||
1da177e4 | 398 | /*--- Internal routines ----------------------------------------------------*/ |
9199ec5c | 399 | static void init_vgachip(struct fb_info *info); |
8503df65 KH |
400 | static void switch_monitor(struct cirrusfb_info *cinfo, int on); |
401 | static void WGen(const struct cirrusfb_info *cinfo, | |
402 | int regnum, unsigned char val); | |
403 | static unsigned char RGen(const struct cirrusfb_info *cinfo, int regnum); | |
404 | static void AttrOn(const struct cirrusfb_info *cinfo); | |
405 | static void WHDR(const struct cirrusfb_info *cinfo, unsigned char val); | |
406 | static void WSFR(struct cirrusfb_info *cinfo, unsigned char val); | |
407 | static void WSFR2(struct cirrusfb_info *cinfo, unsigned char val); | |
408 | static void WClut(struct cirrusfb_info *cinfo, unsigned char regnum, | |
409 | unsigned char red, unsigned char green, unsigned char blue); | |
1da177e4 | 410 | #if 0 |
8503df65 KH |
411 | static void RClut(struct cirrusfb_info *cinfo, unsigned char regnum, |
412 | unsigned char *red, unsigned char *green, | |
413 | unsigned char *blue); | |
1da177e4 | 414 | #endif |
8503df65 KH |
415 | static void cirrusfb_WaitBLT(u8 __iomem *regbase); |
416 | static void cirrusfb_BitBLT(u8 __iomem *regbase, int bits_per_pixel, | |
417 | u_short curx, u_short cury, | |
418 | u_short destx, u_short desty, | |
419 | u_short width, u_short height, | |
420 | u_short line_length); | |
421 | static void cirrusfb_RectFill(u8 __iomem *regbase, int bits_per_pixel, | |
422 | u_short x, u_short y, | |
423 | u_short width, u_short height, | |
424 | u_char color, u_short line_length); | |
425 | ||
dafa32c5 | 426 | static void bestclock(long freq, int *nom, int *den, int *div); |
1da177e4 LT |
427 | |
428 | #ifdef CIRRUSFB_DEBUG | |
8503df65 KH |
429 | static void cirrusfb_dump(void); |
430 | static void cirrusfb_dbg_reg_dump(caddr_t regbase); | |
431 | static void cirrusfb_dbg_print_regs(caddr_t regbase, | |
7345de32 | 432 | enum cirrusfb_dbg_reg_class reg_class, ...); |
8503df65 | 433 | static void cirrusfb_dbg_print_byte(const char *name, unsigned char val); |
1da177e4 LT |
434 | #endif /* CIRRUSFB_DEBUG */ |
435 | ||
436 | /*** END PROTOTYPES ********************************************************/ | |
437 | /*****************************************************************************/ | |
438 | /*** BEGIN Interface Used by the World ***************************************/ | |
439 | ||
8503df65 | 440 | static int opencount; |
1da177e4 LT |
441 | |
442 | /*--- Open /dev/fbx ---------------------------------------------------------*/ | |
8503df65 | 443 | static int cirrusfb_open(struct fb_info *info, int user) |
1da177e4 LT |
444 | { |
445 | if (opencount++ == 0) | |
8503df65 | 446 | switch_monitor(info->par, 1); |
1da177e4 LT |
447 | return 0; |
448 | } | |
449 | ||
450 | /*--- Close /dev/fbx --------------------------------------------------------*/ | |
8503df65 | 451 | static int cirrusfb_release(struct fb_info *info, int user) |
1da177e4 LT |
452 | { |
453 | if (--opencount == 0) | |
8503df65 | 454 | switch_monitor(info->par, 0); |
1da177e4 LT |
455 | return 0; |
456 | } | |
457 | ||
458 | /**** END Interface used by the World *************************************/ | |
459 | /****************************************************************************/ | |
460 | /**** BEGIN Hardware specific Routines **************************************/ | |
461 | ||
486ff387 KH |
462 | /* Check if the MCLK is not a better clock source */ |
463 | static int cirrusfb_check_mclk(struct cirrusfb_info *cinfo, long freq) | |
1da177e4 | 464 | { |
486ff387 | 465 | long mclk = vga_rseq(cinfo->regbase, CL_SEQR1F) & 0x3f; |
1da177e4 | 466 | |
486ff387 KH |
467 | /* Read MCLK value */ |
468 | mclk = (14318 * mclk) >> 3; | |
469 | DPRINTK("Read MCLK of %ld kHz\n", mclk); | |
1da177e4 LT |
470 | |
471 | /* Determine if we should use MCLK instead of VCLK, and if so, what we | |
486ff387 KH |
472 | * should divide it by to get VCLK |
473 | */ | |
474 | ||
475 | if (abs(freq - mclk) < 250) { | |
8503df65 | 476 | DPRINTK("Using VCLK = MCLK\n"); |
486ff387 KH |
477 | return 1; |
478 | } else if (abs(freq - (mclk / 2)) < 250) { | |
479 | DPRINTK("Using VCLK = MCLK/2\n"); | |
480 | return 2; | |
1da177e4 LT |
481 | } |
482 | ||
486ff387 | 483 | return 0; |
1da177e4 LT |
484 | } |
485 | ||
486 | static int cirrusfb_check_var(struct fb_var_screeninfo *var, | |
487 | struct fb_info *info) | |
488 | { | |
09a2910e KH |
489 | int yres; |
490 | /* memory size in pixels */ | |
491 | unsigned pixels = info->screen_size * 8 / var->bits_per_pixel; | |
1da177e4 LT |
492 | |
493 | switch (var->bits_per_pixel) { | |
060b6002 | 494 | case 1: |
09a2910e | 495 | pixels /= 4; |
1da177e4 | 496 | break; /* 8 pixel per byte, only 1/4th of mem usable */ |
060b6002 KH |
497 | case 8: |
498 | case 16: | |
060b6002 | 499 | case 32: |
1da177e4 | 500 | break; /* 1 pixel == 1 byte */ |
1da177e4 | 501 | default: |
8503df65 KH |
502 | printk(KERN_ERR "cirrusfb: mode %dx%dx%d rejected..." |
503 | "color depth not supported.\n", | |
1da177e4 | 504 | var->xres, var->yres, var->bits_per_pixel); |
8503df65 | 505 | DPRINTK("EXIT - EINVAL error\n"); |
1da177e4 LT |
506 | return -EINVAL; |
507 | } | |
508 | ||
09a2910e KH |
509 | if (var->xres_virtual < var->xres) |
510 | var->xres_virtual = var->xres; | |
1da177e4 | 511 | /* use highest possible virtual resolution */ |
09a2910e KH |
512 | if (var->yres_virtual == -1) { |
513 | var->yres_virtual = pixels / var->xres_virtual; | |
1da177e4 | 514 | |
8503df65 KH |
515 | printk(KERN_INFO "cirrusfb: virtual resolution set to " |
516 | "maximum of %dx%d\n", var->xres_virtual, | |
517 | var->yres_virtual); | |
1da177e4 | 518 | } |
1da177e4 LT |
519 | if (var->yres_virtual < var->yres) |
520 | var->yres_virtual = var->yres; | |
521 | ||
09a2910e KH |
522 | if (var->xres_virtual * var->yres_virtual > pixels) { |
523 | printk(KERN_ERR "cirrusfb: mode %dx%dx%d rejected... " | |
524 | "virtual resolution too high to fit into video memory!\n", | |
525 | var->xres_virtual, var->yres_virtual, | |
526 | var->bits_per_pixel); | |
527 | DPRINTK("EXIT - EINVAL error\n"); | |
528 | return -EINVAL; | |
529 | } | |
530 | ||
531 | ||
1da177e4 LT |
532 | if (var->xoffset < 0) |
533 | var->xoffset = 0; | |
534 | if (var->yoffset < 0) | |
535 | var->yoffset = 0; | |
536 | ||
537 | /* truncate xoffset and yoffset to maximum if too high */ | |
538 | if (var->xoffset > var->xres_virtual - var->xres) | |
539 | var->xoffset = var->xres_virtual - var->xres - 1; | |
540 | if (var->yoffset > var->yres_virtual - var->yres) | |
541 | var->yoffset = var->yres_virtual - var->yres - 1; | |
542 | ||
543 | switch (var->bits_per_pixel) { | |
544 | case 1: | |
545 | var->red.offset = 0; | |
546 | var->red.length = 1; | |
060b6002 KH |
547 | var->green = var->red; |
548 | var->blue = var->red; | |
1da177e4 LT |
549 | break; |
550 | ||
551 | case 8: | |
552 | var->red.offset = 0; | |
553 | var->red.length = 6; | |
060b6002 KH |
554 | var->green = var->red; |
555 | var->blue = var->red; | |
1da177e4 LT |
556 | break; |
557 | ||
558 | case 16: | |
8503df65 | 559 | if (isPReP) { |
1da177e4 LT |
560 | var->red.offset = 2; |
561 | var->green.offset = -3; | |
562 | var->blue.offset = 8; | |
563 | } else { | |
564 | var->red.offset = 10; | |
565 | var->green.offset = 5; | |
566 | var->blue.offset = 0; | |
567 | } | |
568 | var->red.length = 5; | |
569 | var->green.length = 5; | |
570 | var->blue.length = 5; | |
571 | break; | |
572 | ||
1da177e4 | 573 | case 32: |
8503df65 | 574 | if (isPReP) { |
1da177e4 LT |
575 | var->red.offset = 8; |
576 | var->green.offset = 16; | |
577 | var->blue.offset = 24; | |
578 | } else { | |
579 | var->red.offset = 16; | |
580 | var->green.offset = 8; | |
581 | var->blue.offset = 0; | |
582 | } | |
583 | var->red.length = 8; | |
584 | var->green.length = 8; | |
585 | var->blue.length = 8; | |
586 | break; | |
587 | ||
588 | default: | |
589 | DPRINTK("Unsupported bpp size: %d\n", var->bits_per_pixel); | |
c930faae | 590 | assert(false); |
1da177e4 LT |
591 | /* should never occur */ |
592 | break; | |
593 | } | |
594 | ||
595 | var->red.msb_right = | |
596 | var->green.msb_right = | |
597 | var->blue.msb_right = | |
598 | var->transp.offset = | |
599 | var->transp.length = | |
600 | var->transp.msb_right = 0; | |
601 | ||
602 | yres = var->yres; | |
603 | if (var->vmode & FB_VMODE_DOUBLE) | |
604 | yres *= 2; | |
605 | else if (var->vmode & FB_VMODE_INTERLACED) | |
606 | yres = (yres + 1) / 2; | |
607 | ||
608 | if (yres >= 1280) { | |
8503df65 KH |
609 | printk(KERN_ERR "cirrusfb: ERROR: VerticalTotal >= 1280; " |
610 | "special treatment required! (TODO)\n"); | |
611 | DPRINTK("EXIT - EINVAL error\n"); | |
1da177e4 LT |
612 | return -EINVAL; |
613 | } | |
614 | ||
615 | return 0; | |
616 | } | |
617 | ||
8503df65 | 618 | static int cirrusfb_decode_var(const struct fb_var_screeninfo *var, |
1da177e4 | 619 | struct cirrusfb_regs *regs, |
0ff1edee | 620 | struct fb_info *info) |
1da177e4 LT |
621 | { |
622 | long freq; | |
623 | long maxclock; | |
060b6002 | 624 | int maxclockidx = var->bits_per_pixel >> 3; |
1da177e4 | 625 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 | 626 | |
8503df65 | 627 | switch (var->bits_per_pixel) { |
1da177e4 | 628 | case 1: |
0ff1edee KH |
629 | info->fix.line_length = var->xres_virtual / 8; |
630 | info->fix.visual = FB_VISUAL_MONO10; | |
1da177e4 LT |
631 | break; |
632 | ||
633 | case 8: | |
0ff1edee KH |
634 | info->fix.line_length = var->xres_virtual; |
635 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
1da177e4 LT |
636 | break; |
637 | ||
638 | case 16: | |
1da177e4 | 639 | case 32: |
0ff1edee | 640 | info->fix.line_length = var->xres_virtual * maxclockidx; |
3b921832 | 641 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
1da177e4 LT |
642 | break; |
643 | ||
644 | default: | |
645 | DPRINTK("Unsupported bpp size: %d\n", var->bits_per_pixel); | |
c930faae | 646 | assert(false); |
1da177e4 LT |
647 | /* should never occur */ |
648 | break; | |
649 | } | |
650 | ||
0ff1edee | 651 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
1da177e4 LT |
652 | |
653 | /* convert from ps to kHz */ | |
060b6002 | 654 | freq = PICOS2KHZ(var->pixclock); |
1da177e4 | 655 | |
8503df65 | 656 | DPRINTK("desired pixclock: %ld kHz\n", freq); |
1da177e4 LT |
657 | |
658 | maxclock = cirrusfb_board_info[cinfo->btype].maxclock[maxclockidx]; | |
659 | regs->multiplexing = 0; | |
660 | ||
661 | /* If the frequency is greater than we can support, we might be able | |
662 | * to use multiplexing for the video mode */ | |
663 | if (freq > maxclock) { | |
664 | switch (cinfo->btype) { | |
665 | case BT_ALPINE: | |
666 | case BT_GD5480: | |
667 | regs->multiplexing = 1; | |
668 | break; | |
669 | ||
670 | default: | |
8503df65 KH |
671 | printk(KERN_ERR "cirrusfb: Frequency greater " |
672 | "than maxclock (%ld kHz)\n", maxclock); | |
673 | DPRINTK("EXIT - return -EINVAL\n"); | |
1da177e4 LT |
674 | return -EINVAL; |
675 | } | |
676 | } | |
677 | #if 0 | |
678 | /* TODO: If we have a 1MB 5434, we need to put ourselves in a mode where | |
679 | * the VCLK is double the pixel clock. */ | |
680 | switch (var->bits_per_pixel) { | |
681 | case 16: | |
682 | case 32: | |
9a85cf51 | 683 | if (var->xres <= 800) |
8503df65 KH |
684 | /* Xbh has this type of clock for 32-bit */ |
685 | freq /= 2; | |
1da177e4 LT |
686 | break; |
687 | } | |
688 | #endif | |
1da177e4 LT |
689 | return 0; |
690 | } | |
691 | ||
486ff387 KH |
692 | static void cirrusfb_set_mclk_as_source(const struct cirrusfb_info *cinfo, |
693 | int div) | |
1da177e4 | 694 | { |
486ff387 | 695 | unsigned char old1f, old1e; |
8503df65 | 696 | assert(cinfo != NULL); |
486ff387 KH |
697 | old1f = vga_rseq(cinfo->regbase, CL_SEQR1F) & ~0x40; |
698 | ||
699 | if (div) { | |
700 | DPRINTK("Set %s as pixclock source.\n", | |
701 | (div == 2) ? "MCLK/2" : "MCLK"); | |
702 | old1f |= 0x40; | |
703 | old1e = vga_rseq(cinfo->regbase, CL_SEQR1E) & ~0x1; | |
704 | if (div == 2) | |
705 | old1e |= 1; | |
1da177e4 | 706 | |
486ff387 | 707 | vga_wseq(cinfo->regbase, CL_SEQR1E, old1e); |
1da177e4 | 708 | } |
486ff387 | 709 | vga_wseq(cinfo->regbase, CL_SEQR1F, old1f); |
1da177e4 LT |
710 | } |
711 | ||
712 | /************************************************************************* | |
713 | cirrusfb_set_par_foo() | |
714 | ||
715 | actually writes the values for a new video mode into the hardware, | |
716 | **************************************************************************/ | |
8503df65 | 717 | static int cirrusfb_set_par_foo(struct fb_info *info) |
1da177e4 LT |
718 | { |
719 | struct cirrusfb_info *cinfo = info->par; | |
720 | struct fb_var_screeninfo *var = &info->var; | |
721 | struct cirrusfb_regs regs; | |
722 | u8 __iomem *regbase = cinfo->regbase; | |
723 | unsigned char tmp; | |
724 | int offset = 0, err; | |
725 | const struct cirrusfb_board_info_rec *bi; | |
9a85cf51 KH |
726 | int hdispend, hsyncstart, hsyncend, htotal; |
727 | int yres, vdispend, vsyncstart, vsyncend, vtotal; | |
dafa32c5 KH |
728 | long freq; |
729 | int nom, den, div; | |
1da177e4 | 730 | |
8503df65 KH |
731 | DPRINTK("ENTER\n"); |
732 | DPRINTK("Requested mode: %dx%dx%d\n", | |
1da177e4 | 733 | var->xres, var->yres, var->bits_per_pixel); |
8503df65 | 734 | DPRINTK("pixclock: %d\n", var->pixclock); |
1da177e4 | 735 | |
9199ec5c | 736 | init_vgachip(info); |
1da177e4 LT |
737 | |
738 | err = cirrusfb_decode_var(var, ®s, info); | |
8503df65 | 739 | if (err) { |
1da177e4 LT |
740 | /* should never happen */ |
741 | DPRINTK("mode change aborted. invalid var.\n"); | |
742 | return -EINVAL; | |
743 | } | |
744 | ||
745 | bi = &cirrusfb_board_info[cinfo->btype]; | |
746 | ||
9a85cf51 KH |
747 | hsyncstart = var->xres + var->right_margin; |
748 | hsyncend = hsyncstart + var->hsync_len; | |
749 | htotal = (hsyncend + var->left_margin) / 8 - 5; | |
750 | hdispend = var->xres / 8 - 1; | |
751 | hsyncstart = hsyncstart / 8 + 1; | |
752 | hsyncend = hsyncend / 8 + 1; | |
753 | ||
754 | yres = var->yres; | |
755 | vsyncstart = yres + var->lower_margin; | |
756 | vsyncend = vsyncstart + var->vsync_len; | |
757 | vtotal = vsyncend + var->upper_margin; | |
758 | vdispend = yres - 1; | |
759 | ||
760 | if (var->vmode & FB_VMODE_DOUBLE) { | |
761 | yres *= 2; | |
762 | vsyncstart *= 2; | |
763 | vsyncend *= 2; | |
764 | vtotal *= 2; | |
765 | } else if (var->vmode & FB_VMODE_INTERLACED) { | |
766 | yres = (yres + 1) / 2; | |
767 | vsyncstart = (vsyncstart + 1) / 2; | |
768 | vsyncend = (vsyncend + 1) / 2; | |
769 | vtotal = (vtotal + 1) / 2; | |
770 | } | |
771 | ||
772 | vtotal -= 2; | |
773 | vsyncstart -= 1; | |
774 | vsyncend -= 1; | |
775 | ||
776 | if (yres >= 1024) { | |
777 | vtotal /= 2; | |
778 | vsyncstart /= 2; | |
779 | vsyncend /= 2; | |
780 | vdispend /= 2; | |
781 | } | |
782 | if (regs.multiplexing) { | |
783 | htotal /= 2; | |
784 | hsyncstart /= 2; | |
785 | hsyncend /= 2; | |
786 | hdispend /= 2; | |
787 | } | |
1da177e4 | 788 | /* unlock register VGA_CRTC_H_TOTAL..CRT7 */ |
8503df65 | 789 | vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, 0x20); /* previously: 0x00) */ |
1da177e4 LT |
790 | |
791 | /* if debugging is enabled, all parameters get output before writing */ | |
9a85cf51 KH |
792 | DPRINTK("CRT0: %d\n", htotal); |
793 | vga_wcrt(regbase, VGA_CRTC_H_TOTAL, htotal); | |
1da177e4 | 794 | |
9a85cf51 KH |
795 | DPRINTK("CRT1: %d\n", hdispend); |
796 | vga_wcrt(regbase, VGA_CRTC_H_DISP, hdispend); | |
1da177e4 | 797 | |
9a85cf51 KH |
798 | DPRINTK("CRT2: %d\n", var->xres / 8); |
799 | vga_wcrt(regbase, VGA_CRTC_H_BLANK_START, var->xres / 8); | |
1da177e4 | 800 | |
8503df65 | 801 | /* + 128: Compatible read */ |
9a85cf51 | 802 | DPRINTK("CRT3: 128+%d\n", (htotal + 5) % 32); |
8503df65 | 803 | vga_wcrt(regbase, VGA_CRTC_H_BLANK_END, |
9a85cf51 | 804 | 128 + ((htotal + 5) % 32)); |
1da177e4 | 805 | |
9a85cf51 KH |
806 | DPRINTK("CRT4: %d\n", hsyncstart); |
807 | vga_wcrt(regbase, VGA_CRTC_H_SYNC_START, hsyncstart); | |
1da177e4 | 808 | |
9a85cf51 KH |
809 | tmp = hsyncend % 32; |
810 | if ((htotal + 5) & 32) | |
1da177e4 | 811 | tmp += 128; |
8503df65 KH |
812 | DPRINTK("CRT5: %d\n", tmp); |
813 | vga_wcrt(regbase, VGA_CRTC_H_SYNC_END, tmp); | |
1da177e4 | 814 | |
9a85cf51 KH |
815 | DPRINTK("CRT6: %d\n", vtotal & 0xff); |
816 | vga_wcrt(regbase, VGA_CRTC_V_TOTAL, vtotal & 0xff); | |
1da177e4 LT |
817 | |
818 | tmp = 16; /* LineCompare bit #9 */ | |
9a85cf51 | 819 | if (vtotal & 256) |
1da177e4 | 820 | tmp |= 1; |
9a85cf51 | 821 | if (vdispend & 256) |
1da177e4 | 822 | tmp |= 2; |
9a85cf51 | 823 | if (vsyncstart & 256) |
1da177e4 | 824 | tmp |= 4; |
9a85cf51 | 825 | if ((vdispend + 1) & 256) |
1da177e4 | 826 | tmp |= 8; |
9a85cf51 | 827 | if (vtotal & 512) |
1da177e4 | 828 | tmp |= 32; |
9a85cf51 | 829 | if (vdispend & 512) |
1da177e4 | 830 | tmp |= 64; |
9a85cf51 | 831 | if (vsyncstart & 512) |
1da177e4 | 832 | tmp |= 128; |
8503df65 KH |
833 | DPRINTK("CRT7: %d\n", tmp); |
834 | vga_wcrt(regbase, VGA_CRTC_OVERFLOW, tmp); | |
1da177e4 LT |
835 | |
836 | tmp = 0x40; /* LineCompare bit #8 */ | |
9a85cf51 | 837 | if ((vdispend + 1) & 512) |
1da177e4 LT |
838 | tmp |= 0x20; |
839 | if (var->vmode & FB_VMODE_DOUBLE) | |
840 | tmp |= 0x80; | |
8503df65 KH |
841 | DPRINTK("CRT9: %d\n", tmp); |
842 | vga_wcrt(regbase, VGA_CRTC_MAX_SCAN, tmp); | |
1da177e4 | 843 | |
9a85cf51 KH |
844 | DPRINTK("CRT10: %d\n", vsyncstart & 0xff); |
845 | vga_wcrt(regbase, VGA_CRTC_V_SYNC_START, vsyncstart & 0xff); | |
1da177e4 | 846 | |
9a85cf51 KH |
847 | DPRINTK("CRT11: 64+32+%d\n", vsyncend % 16); |
848 | vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, vsyncend % 16 + 64 + 32); | |
1da177e4 | 849 | |
9a85cf51 KH |
850 | DPRINTK("CRT12: %d\n", vdispend & 0xff); |
851 | vga_wcrt(regbase, VGA_CRTC_V_DISP_END, vdispend & 0xff); | |
1da177e4 | 852 | |
9a85cf51 KH |
853 | DPRINTK("CRT15: %d\n", (vdispend + 1) & 0xff); |
854 | vga_wcrt(regbase, VGA_CRTC_V_BLANK_START, (vdispend + 1) & 0xff); | |
1da177e4 | 855 | |
9a85cf51 KH |
856 | DPRINTK("CRT16: %d\n", vtotal & 0xff); |
857 | vga_wcrt(regbase, VGA_CRTC_V_BLANK_END, vtotal & 0xff); | |
1da177e4 | 858 | |
8503df65 KH |
859 | DPRINTK("CRT18: 0xff\n"); |
860 | vga_wcrt(regbase, VGA_CRTC_LINE_COMPARE, 0xff); | |
1da177e4 LT |
861 | |
862 | tmp = 0; | |
863 | if (var->vmode & FB_VMODE_INTERLACED) | |
864 | tmp |= 1; | |
9a85cf51 | 865 | if ((htotal + 5) & 64) |
1da177e4 | 866 | tmp |= 16; |
9a85cf51 | 867 | if ((htotal + 5) & 128) |
1da177e4 | 868 | tmp |= 32; |
9a85cf51 | 869 | if (vtotal & 256) |
1da177e4 | 870 | tmp |= 64; |
9a85cf51 | 871 | if (vtotal & 512) |
1da177e4 LT |
872 | tmp |= 128; |
873 | ||
8503df65 KH |
874 | DPRINTK("CRT1a: %d\n", tmp); |
875 | vga_wcrt(regbase, CL_CRT1A, tmp); | |
1da177e4 | 876 | |
dafa32c5 KH |
877 | freq = PICOS2KHZ(var->pixclock); |
878 | bestclock(freq, &nom, &den, &div); | |
879 | ||
1da177e4 LT |
880 | /* set VCLK0 */ |
881 | /* hardware RefClock: 14.31818 MHz */ | |
882 | /* formula: VClk = (OSC * N) / (D * (1+P)) */ | |
883 | /* Example: VClk = (14.31818 * 91) / (23 * (1+1)) = 28.325 MHz */ | |
884 | ||
486ff387 KH |
885 | if (cinfo->btype == BT_ALPINE) { |
886 | /* if freq is close to mclk or mclk/2 select mclk | |
887 | * as clock source | |
888 | */ | |
889 | int divMCLK = cirrusfb_check_mclk(cinfo, freq); | |
890 | if (divMCLK) { | |
891 | nom = 0; | |
892 | cirrusfb_set_mclk_as_source(cinfo, divMCLK); | |
893 | } | |
894 | } | |
895 | if (nom) { | |
896 | vga_wseq(regbase, CL_SEQRB, nom); | |
897 | tmp = den << 1; | |
898 | if (div != 0) | |
899 | tmp |= 1; | |
900 | ||
901 | /* 6 bit denom; ONLY 5434!!! (bugged me 10 days) */ | |
902 | if ((cinfo->btype == BT_SD64) || | |
903 | (cinfo->btype == BT_ALPINE) || | |
904 | (cinfo->btype == BT_GD5480)) | |
905 | tmp |= 0x80; | |
906 | ||
907 | DPRINTK("CL_SEQR1B: %ld\n", (long) tmp); | |
908 | vga_wseq(regbase, CL_SEQR1B, tmp); | |
909 | } | |
1da177e4 | 910 | |
9a85cf51 | 911 | if (yres >= 1024) |
1da177e4 | 912 | /* 1280x1024 */ |
8503df65 | 913 | vga_wcrt(regbase, VGA_CRTC_MODE, 0xc7); |
1da177e4 LT |
914 | else |
915 | /* mode control: VGA_CRTC_START_HI enable, ROTATE(?), 16bit | |
916 | * address wrap, no compat. */ | |
8503df65 | 917 | vga_wcrt(regbase, VGA_CRTC_MODE, 0xc3); |
1da177e4 | 918 | |
8503df65 KH |
919 | /* HAEH? vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, 0x20); |
920 | * previously: 0x00 unlock VGA_CRTC_H_TOTAL..CRT7 */ | |
1da177e4 LT |
921 | |
922 | /* don't know if it would hurt to also program this if no interlaced */ | |
923 | /* mode is used, but I feel better this way.. :-) */ | |
924 | if (var->vmode & FB_VMODE_INTERLACED) | |
9a85cf51 | 925 | vga_wcrt(regbase, VGA_CRTC_REGS, htotal / 2); |
1da177e4 | 926 | else |
8503df65 | 927 | vga_wcrt(regbase, VGA_CRTC_REGS, 0x00); /* interlace control */ |
1da177e4 | 928 | |
8503df65 | 929 | vga_wseq(regbase, VGA_SEQ_CHARACTER_MAP, 0); |
1da177e4 LT |
930 | |
931 | /* adjust horizontal/vertical sync type (low/high) */ | |
8503df65 KH |
932 | /* enable display memory & CRTC I/O address for color mode */ |
933 | tmp = 0x03; | |
1da177e4 LT |
934 | if (var->sync & FB_SYNC_HOR_HIGH_ACT) |
935 | tmp |= 0x40; | |
936 | if (var->sync & FB_SYNC_VERT_HIGH_ACT) | |
937 | tmp |= 0x80; | |
8503df65 | 938 | WGen(cinfo, VGA_MIS_W, tmp); |
1da177e4 | 939 | |
8503df65 KH |
940 | /* Screen A Preset Row-Scan register */ |
941 | vga_wcrt(regbase, VGA_CRTC_PRESET_ROW, 0); | |
942 | /* text cursor on and start line */ | |
943 | vga_wcrt(regbase, VGA_CRTC_CURSOR_START, 0); | |
944 | /* text cursor end line */ | |
945 | vga_wcrt(regbase, VGA_CRTC_CURSOR_END, 31); | |
1da177e4 LT |
946 | |
947 | /****************************************************** | |
948 | * | |
949 | * 1 bpp | |
950 | * | |
951 | */ | |
952 | ||
953 | /* programming for different color depths */ | |
954 | if (var->bits_per_pixel == 1) { | |
8503df65 KH |
955 | DPRINTK("cirrusfb: preparing for 1 bit deep display\n"); |
956 | vga_wgfx(regbase, VGA_GFX_MODE, 0); /* mode register */ | |
1da177e4 LT |
957 | |
958 | /* SR07 */ | |
959 | switch (cinfo->btype) { | |
960 | case BT_SD64: | |
961 | case BT_PICCOLO: | |
962 | case BT_PICASSO: | |
963 | case BT_SPECTRUM: | |
964 | case BT_PICASSO4: | |
965 | case BT_ALPINE: | |
966 | case BT_GD5480: | |
8503df65 KH |
967 | DPRINTK(" (for GD54xx)\n"); |
968 | vga_wseq(regbase, CL_SEQR7, | |
1da177e4 LT |
969 | regs.multiplexing ? |
970 | bi->sr07_1bpp_mux : bi->sr07_1bpp); | |
971 | break; | |
972 | ||
973 | case BT_LAGUNA: | |
8503df65 KH |
974 | DPRINTK(" (for GD546x)\n"); |
975 | vga_wseq(regbase, CL_SEQR7, | |
976 | vga_rseq(regbase, CL_SEQR7) & ~0x01); | |
1da177e4 LT |
977 | break; |
978 | ||
979 | default: | |
8503df65 | 980 | printk(KERN_WARNING "cirrusfb: unknown Board\n"); |
1da177e4 LT |
981 | break; |
982 | } | |
983 | ||
984 | /* Extended Sequencer Mode */ | |
985 | switch (cinfo->btype) { | |
986 | case BT_SD64: | |
8503df65 KH |
987 | /* setting the SEQRF on SD64 is not necessary |
988 | * (only during init) | |
989 | */ | |
990 | DPRINTK("(for SD64)\n"); | |
991 | /* MCLK select */ | |
992 | vga_wseq(regbase, CL_SEQR1F, 0x1a); | |
1da177e4 LT |
993 | break; |
994 | ||
995 | case BT_PICCOLO: | |
060b6002 KH |
996 | case BT_SPECTRUM: |
997 | DPRINTK("(for Piccolo/Spectrum)\n"); | |
8503df65 KH |
998 | /* ### ueberall 0x22? */ |
999 | /* ##vorher 1c MCLK select */ | |
1000 | vga_wseq(regbase, CL_SEQR1F, 0x22); | |
1001 | /* evtl d0 bei 1 bit? avoid FIFO underruns..? */ | |
1002 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1003 | break; |
1004 | ||
1005 | case BT_PICASSO: | |
8503df65 KH |
1006 | DPRINTK("(for Picasso)\n"); |
1007 | /* ##vorher 22 MCLK select */ | |
1008 | vga_wseq(regbase, CL_SEQR1F, 0x22); | |
1009 | /* ## vorher d0 avoid FIFO underruns..? */ | |
1010 | vga_wseq(regbase, CL_SEQRF, 0xd0); | |
1da177e4 LT |
1011 | break; |
1012 | ||
1da177e4 LT |
1013 | case BT_PICASSO4: |
1014 | case BT_ALPINE: | |
1015 | case BT_GD5480: | |
1016 | case BT_LAGUNA: | |
8503df65 | 1017 | DPRINTK(" (for GD54xx)\n"); |
1da177e4 LT |
1018 | /* do nothing */ |
1019 | break; | |
1020 | ||
1021 | default: | |
8503df65 | 1022 | printk(KERN_WARNING "cirrusfb: unknown Board\n"); |
1da177e4 LT |
1023 | break; |
1024 | } | |
1025 | ||
8503df65 KH |
1026 | /* pixel mask: pass-through for first plane */ |
1027 | WGen(cinfo, VGA_PEL_MSK, 0x01); | |
1da177e4 | 1028 | if (regs.multiplexing) |
8503df65 KH |
1029 | /* hidden dac reg: 1280x1024 */ |
1030 | WHDR(cinfo, 0x4a); | |
1da177e4 | 1031 | else |
8503df65 KH |
1032 | /* hidden dac: nothing */ |
1033 | WHDR(cinfo, 0); | |
1034 | /* memory mode: odd/even, ext. memory */ | |
1035 | vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, 0x06); | |
1036 | /* plane mask: only write to first plane */ | |
1037 | vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0x01); | |
1da177e4 LT |
1038 | offset = var->xres_virtual / 16; |
1039 | } | |
1040 | ||
1041 | /****************************************************** | |
1042 | * | |
1043 | * 8 bpp | |
1044 | * | |
1045 | */ | |
1046 | ||
1047 | else if (var->bits_per_pixel == 8) { | |
8503df65 | 1048 | DPRINTK("cirrusfb: preparing for 8 bit deep display\n"); |
1da177e4 LT |
1049 | switch (cinfo->btype) { |
1050 | case BT_SD64: | |
1051 | case BT_PICCOLO: | |
1052 | case BT_PICASSO: | |
1053 | case BT_SPECTRUM: | |
1054 | case BT_PICASSO4: | |
1055 | case BT_ALPINE: | |
1056 | case BT_GD5480: | |
8503df65 KH |
1057 | DPRINTK(" (for GD54xx)\n"); |
1058 | vga_wseq(regbase, CL_SEQR7, | |
1da177e4 LT |
1059 | regs.multiplexing ? |
1060 | bi->sr07_8bpp_mux : bi->sr07_8bpp); | |
1061 | break; | |
1062 | ||
1063 | case BT_LAGUNA: | |
8503df65 KH |
1064 | DPRINTK(" (for GD546x)\n"); |
1065 | vga_wseq(regbase, CL_SEQR7, | |
1066 | vga_rseq(regbase, CL_SEQR7) | 0x01); | |
1da177e4 LT |
1067 | break; |
1068 | ||
1069 | default: | |
8503df65 | 1070 | printk(KERN_WARNING "cirrusfb: unknown Board\n"); |
1da177e4 LT |
1071 | break; |
1072 | } | |
1073 | ||
1074 | switch (cinfo->btype) { | |
1075 | case BT_SD64: | |
8503df65 KH |
1076 | /* MCLK select */ |
1077 | vga_wseq(regbase, CL_SEQR1F, 0x1d); | |
1da177e4 LT |
1078 | break; |
1079 | ||
1080 | case BT_PICCOLO: | |
1da177e4 | 1081 | case BT_PICASSO: |
1da177e4 | 1082 | case BT_SPECTRUM: |
8503df65 KH |
1083 | /* ### vorher 1c MCLK select */ |
1084 | vga_wseq(regbase, CL_SEQR1F, 0x22); | |
1085 | /* Fast Page-Mode writes */ | |
1086 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1087 | break; |
1088 | ||
1089 | case BT_PICASSO4: | |
1090 | #ifdef CONFIG_ZORRO | |
8503df65 KH |
1091 | /* ### INCOMPLETE!! */ |
1092 | vga_wseq(regbase, CL_SEQRF, 0xb8); | |
1da177e4 | 1093 | #endif |
8503df65 | 1094 | /* vga_wseq(regbase, CL_SEQR1F, 0x1c); */ |
1da177e4 LT |
1095 | break; |
1096 | ||
1097 | case BT_ALPINE: | |
8503df65 | 1098 | DPRINTK(" (for GD543x)\n"); |
1da177e4 LT |
1099 | /* We already set SRF and SR1F */ |
1100 | break; | |
1101 | ||
1102 | case BT_GD5480: | |
1103 | case BT_LAGUNA: | |
8503df65 | 1104 | DPRINTK(" (for GD54xx)\n"); |
1da177e4 LT |
1105 | /* do nothing */ |
1106 | break; | |
1107 | ||
1108 | default: | |
8503df65 | 1109 | printk(KERN_WARNING "cirrusfb: unknown Board\n"); |
1da177e4 LT |
1110 | break; |
1111 | } | |
1112 | ||
8503df65 KH |
1113 | /* mode register: 256 color mode */ |
1114 | vga_wgfx(regbase, VGA_GFX_MODE, 64); | |
1115 | /* pixel mask: pass-through all planes */ | |
1116 | WGen(cinfo, VGA_PEL_MSK, 0xff); | |
1da177e4 | 1117 | if (regs.multiplexing) |
8503df65 KH |
1118 | /* hidden dac reg: 1280x1024 */ |
1119 | WHDR(cinfo, 0x4a); | |
1da177e4 | 1120 | else |
8503df65 KH |
1121 | /* hidden dac: nothing */ |
1122 | WHDR(cinfo, 0); | |
1123 | /* memory mode: chain4, ext. memory */ | |
1124 | vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, 0x0a); | |
1125 | /* plane mask: enable writing to all 4 planes */ | |
1126 | vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0xff); | |
1da177e4 LT |
1127 | offset = var->xres_virtual / 8; |
1128 | } | |
1129 | ||
1130 | /****************************************************** | |
1131 | * | |
1132 | * 16 bpp | |
1133 | * | |
1134 | */ | |
1135 | ||
1136 | else if (var->bits_per_pixel == 16) { | |
8503df65 | 1137 | DPRINTK("cirrusfb: preparing for 16 bit deep display\n"); |
1da177e4 LT |
1138 | switch (cinfo->btype) { |
1139 | case BT_SD64: | |
8503df65 KH |
1140 | /* Extended Sequencer Mode: 256c col. mode */ |
1141 | vga_wseq(regbase, CL_SEQR7, 0xf7); | |
1142 | /* MCLK select */ | |
1143 | vga_wseq(regbase, CL_SEQR1F, 0x1e); | |
1da177e4 LT |
1144 | break; |
1145 | ||
1146 | case BT_PICCOLO: | |
060b6002 | 1147 | case BT_SPECTRUM: |
8503df65 KH |
1148 | vga_wseq(regbase, CL_SEQR7, 0x87); |
1149 | /* Fast Page-Mode writes */ | |
1150 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1151 | /* MCLK select */ | |
1152 | vga_wseq(regbase, CL_SEQR1F, 0x22); | |
1da177e4 LT |
1153 | break; |
1154 | ||
1155 | case BT_PICASSO: | |
8503df65 KH |
1156 | vga_wseq(regbase, CL_SEQR7, 0x27); |
1157 | /* Fast Page-Mode writes */ | |
1158 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1159 | /* MCLK select */ | |
1160 | vga_wseq(regbase, CL_SEQR1F, 0x22); | |
1da177e4 LT |
1161 | break; |
1162 | ||
1da177e4 | 1163 | case BT_PICASSO4: |
8503df65 KH |
1164 | vga_wseq(regbase, CL_SEQR7, 0x27); |
1165 | /* vga_wseq(regbase, CL_SEQR1F, 0x1c); */ | |
1da177e4 LT |
1166 | break; |
1167 | ||
1168 | case BT_ALPINE: | |
8503df65 | 1169 | DPRINTK(" (for GD543x)\n"); |
3b921832 | 1170 | vga_wseq(regbase, CL_SEQR7, 0xa7); |
1da177e4 LT |
1171 | break; |
1172 | ||
1173 | case BT_GD5480: | |
8503df65 KH |
1174 | DPRINTK(" (for GD5480)\n"); |
1175 | vga_wseq(regbase, CL_SEQR7, 0x17); | |
1da177e4 LT |
1176 | /* We already set SRF and SR1F */ |
1177 | break; | |
1178 | ||
1179 | case BT_LAGUNA: | |
8503df65 KH |
1180 | DPRINTK(" (for GD546x)\n"); |
1181 | vga_wseq(regbase, CL_SEQR7, | |
1182 | vga_rseq(regbase, CL_SEQR7) & ~0x01); | |
1da177e4 LT |
1183 | break; |
1184 | ||
1185 | default: | |
8503df65 | 1186 | printk(KERN_WARNING "CIRRUSFB: unknown Board\n"); |
1da177e4 LT |
1187 | break; |
1188 | } | |
1189 | ||
8503df65 KH |
1190 | /* mode register: 256 color mode */ |
1191 | vga_wgfx(regbase, VGA_GFX_MODE, 64); | |
1192 | /* pixel mask: pass-through all planes */ | |
1193 | WGen(cinfo, VGA_PEL_MSK, 0xff); | |
1da177e4 | 1194 | #ifdef CONFIG_PCI |
8503df65 | 1195 | WHDR(cinfo, 0xc0); /* Copy Xbh */ |
1da177e4 LT |
1196 | #elif defined(CONFIG_ZORRO) |
1197 | /* FIXME: CONFIG_PCI and CONFIG_ZORRO may be defined both */ | |
8503df65 | 1198 | WHDR(cinfo, 0xa0); /* hidden dac reg: nothing special */ |
1da177e4 | 1199 | #endif |
8503df65 KH |
1200 | /* memory mode: chain4, ext. memory */ |
1201 | vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, 0x0a); | |
1202 | /* plane mask: enable writing to all 4 planes */ | |
1203 | vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0xff); | |
1da177e4 LT |
1204 | offset = var->xres_virtual / 4; |
1205 | } | |
1206 | ||
1207 | /****************************************************** | |
1208 | * | |
1209 | * 32 bpp | |
1210 | * | |
1211 | */ | |
1212 | ||
1213 | else if (var->bits_per_pixel == 32) { | |
1cea9a9a | 1214 | DPRINTK("cirrusfb: preparing for 32 bit deep display\n"); |
1da177e4 LT |
1215 | switch (cinfo->btype) { |
1216 | case BT_SD64: | |
8503df65 KH |
1217 | /* Extended Sequencer Mode: 256c col. mode */ |
1218 | vga_wseq(regbase, CL_SEQR7, 0xf9); | |
1219 | /* MCLK select */ | |
1220 | vga_wseq(regbase, CL_SEQR1F, 0x1e); | |
1da177e4 LT |
1221 | break; |
1222 | ||
1223 | case BT_PICCOLO: | |
060b6002 | 1224 | case BT_SPECTRUM: |
8503df65 KH |
1225 | vga_wseq(regbase, CL_SEQR7, 0x85); |
1226 | /* Fast Page-Mode writes */ | |
1227 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1228 | /* MCLK select */ | |
1229 | vga_wseq(regbase, CL_SEQR1F, 0x22); | |
1da177e4 LT |
1230 | break; |
1231 | ||
1232 | case BT_PICASSO: | |
8503df65 KH |
1233 | vga_wseq(regbase, CL_SEQR7, 0x25); |
1234 | /* Fast Page-Mode writes */ | |
1235 | vga_wseq(regbase, CL_SEQRF, 0xb0); | |
1236 | /* MCLK select */ | |
1237 | vga_wseq(regbase, CL_SEQR1F, 0x22); | |
1da177e4 LT |
1238 | break; |
1239 | ||
1da177e4 | 1240 | case BT_PICASSO4: |
8503df65 KH |
1241 | vga_wseq(regbase, CL_SEQR7, 0x25); |
1242 | /* vga_wseq(regbase, CL_SEQR1F, 0x1c); */ | |
1da177e4 LT |
1243 | break; |
1244 | ||
1245 | case BT_ALPINE: | |
8503df65 KH |
1246 | DPRINTK(" (for GD543x)\n"); |
1247 | vga_wseq(regbase, CL_SEQR7, 0xa9); | |
1da177e4 LT |
1248 | break; |
1249 | ||
1250 | case BT_GD5480: | |
8503df65 KH |
1251 | DPRINTK(" (for GD5480)\n"); |
1252 | vga_wseq(regbase, CL_SEQR7, 0x19); | |
1da177e4 LT |
1253 | /* We already set SRF and SR1F */ |
1254 | break; | |
1255 | ||
1256 | case BT_LAGUNA: | |
8503df65 KH |
1257 | DPRINTK(" (for GD546x)\n"); |
1258 | vga_wseq(regbase, CL_SEQR7, | |
1259 | vga_rseq(regbase, CL_SEQR7) & ~0x01); | |
1da177e4 LT |
1260 | break; |
1261 | ||
1262 | default: | |
8503df65 | 1263 | printk(KERN_WARNING "cirrusfb: unknown Board\n"); |
1da177e4 LT |
1264 | break; |
1265 | } | |
1266 | ||
8503df65 KH |
1267 | /* mode register: 256 color mode */ |
1268 | vga_wgfx(regbase, VGA_GFX_MODE, 64); | |
1269 | /* pixel mask: pass-through all planes */ | |
1270 | WGen(cinfo, VGA_PEL_MSK, 0xff); | |
1271 | /* hidden dac reg: 8-8-8 mode (24 or 32) */ | |
1272 | WHDR(cinfo, 0xc5); | |
1273 | /* memory mode: chain4, ext. memory */ | |
1274 | vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, 0x0a); | |
1275 | /* plane mask: enable writing to all 4 planes */ | |
1276 | vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0xff); | |
1da177e4 LT |
1277 | offset = var->xres_virtual / 4; |
1278 | } | |
1279 | ||
1280 | /****************************************************** | |
1281 | * | |
1282 | * unknown/unsupported bpp | |
1283 | * | |
1284 | */ | |
1285 | ||
8503df65 KH |
1286 | else |
1287 | printk(KERN_ERR "cirrusfb: What's this?? " | |
1288 | " requested color depth == %d.\n", | |
1da177e4 | 1289 | var->bits_per_pixel); |
1da177e4 | 1290 | |
8503df65 | 1291 | vga_wcrt(regbase, VGA_CRTC_OFFSET, offset & 0xff); |
1da177e4 LT |
1292 | tmp = 0x22; |
1293 | if (offset & 0x100) | |
1294 | tmp |= 0x10; /* offset overflow bit */ | |
1295 | ||
8503df65 KH |
1296 | /* screen start addr #16-18, fastpagemode cycles */ |
1297 | vga_wcrt(regbase, CL_CRT1B, tmp); | |
1da177e4 LT |
1298 | |
1299 | if (cinfo->btype == BT_SD64 || | |
1300 | cinfo->btype == BT_PICASSO4 || | |
1301 | cinfo->btype == BT_ALPINE || | |
1302 | cinfo->btype == BT_GD5480) | |
8503df65 KH |
1303 | /* screen start address bit 19 */ |
1304 | vga_wcrt(regbase, CL_CRT1D, 0x00); | |
1305 | ||
1306 | /* text cursor location high */ | |
1307 | vga_wcrt(regbase, VGA_CRTC_CURSOR_HI, 0); | |
1308 | /* text cursor location low */ | |
1309 | vga_wcrt(regbase, VGA_CRTC_CURSOR_LO, 0); | |
1310 | /* underline row scanline = at very bottom */ | |
1311 | vga_wcrt(regbase, VGA_CRTC_UNDERLINE, 0); | |
1312 | ||
1313 | /* controller mode */ | |
1314 | vga_wattr(regbase, VGA_ATC_MODE, 1); | |
1315 | /* overscan (border) color */ | |
1316 | vga_wattr(regbase, VGA_ATC_OVERSCAN, 0); | |
1317 | /* color plane enable */ | |
1318 | vga_wattr(regbase, VGA_ATC_PLANE_ENABLE, 15); | |
1319 | /* pixel panning */ | |
1320 | vga_wattr(regbase, CL_AR33, 0); | |
1321 | /* color select */ | |
1322 | vga_wattr(regbase, VGA_ATC_COLOR_PAGE, 0); | |
1da177e4 LT |
1323 | |
1324 | /* [ EGS: SetOffset(); ] */ | |
1325 | /* From SetOffset(): Turn on VideoEnable bit in Attribute controller */ | |
8503df65 KH |
1326 | AttrOn(cinfo); |
1327 | ||
1328 | /* set/reset register */ | |
1329 | vga_wgfx(regbase, VGA_GFX_SR_VALUE, 0); | |
1330 | /* set/reset enable */ | |
1331 | vga_wgfx(regbase, VGA_GFX_SR_ENABLE, 0); | |
1332 | /* color compare */ | |
1333 | vga_wgfx(regbase, VGA_GFX_COMPARE_VALUE, 0); | |
1334 | /* data rotate */ | |
1335 | vga_wgfx(regbase, VGA_GFX_DATA_ROTATE, 0); | |
1336 | /* read map select */ | |
1337 | vga_wgfx(regbase, VGA_GFX_PLANE_READ, 0); | |
1338 | /* miscellaneous register */ | |
1339 | vga_wgfx(regbase, VGA_GFX_MISC, 1); | |
1340 | /* color don't care */ | |
1341 | vga_wgfx(regbase, VGA_GFX_COMPARE_MASK, 15); | |
1342 | /* bit mask */ | |
1343 | vga_wgfx(regbase, VGA_GFX_BIT_MASK, 255); | |
1344 | ||
1345 | /* graphics cursor attributes: nothing special */ | |
1346 | vga_wseq(regbase, CL_SEQR12, 0x0); | |
1da177e4 LT |
1347 | |
1348 | /* finally, turn on everything - turn off "FullBandwidth" bit */ | |
1349 | /* also, set "DotClock%2" bit where requested */ | |
1350 | tmp = 0x01; | |
1351 | ||
1352 | /*** FB_VMODE_CLOCK_HALVE in linux/fb.h not defined anymore ? | |
1353 | if (var->vmode & FB_VMODE_CLOCK_HALVE) | |
1354 | tmp |= 0x08; | |
1355 | */ | |
1356 | ||
8503df65 KH |
1357 | vga_wseq(regbase, VGA_SEQ_CLOCK_MODE, tmp); |
1358 | DPRINTK("CL_SEQR1: %d\n", tmp); | |
1da177e4 LT |
1359 | |
1360 | cinfo->currentmode = regs; | |
1da177e4 LT |
1361 | |
1362 | /* pan to requested offset */ | |
8503df65 | 1363 | cirrusfb_pan_display(var, info); |
1da177e4 LT |
1364 | |
1365 | #ifdef CIRRUSFB_DEBUG | |
8503df65 | 1366 | cirrusfb_dump(); |
1da177e4 LT |
1367 | #endif |
1368 | ||
8503df65 | 1369 | DPRINTK("EXIT\n"); |
1da177e4 LT |
1370 | return 0; |
1371 | } | |
1372 | ||
1373 | /* for some reason incomprehensible to me, cirrusfb requires that you write | |
1374 | * the registers twice for the settings to take..grr. -dte */ | |
8503df65 | 1375 | static int cirrusfb_set_par(struct fb_info *info) |
1da177e4 | 1376 | { |
8503df65 KH |
1377 | cirrusfb_set_par_foo(info); |
1378 | return cirrusfb_set_par_foo(info); | |
1da177e4 LT |
1379 | } |
1380 | ||
8503df65 KH |
1381 | static int cirrusfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
1382 | unsigned blue, unsigned transp, | |
1383 | struct fb_info *info) | |
1da177e4 LT |
1384 | { |
1385 | struct cirrusfb_info *cinfo = info->par; | |
1386 | ||
1387 | if (regno > 255) | |
1388 | return -EINVAL; | |
1389 | ||
1390 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { | |
1391 | u32 v; | |
1392 | red >>= (16 - info->var.red.length); | |
1393 | green >>= (16 - info->var.green.length); | |
1394 | blue >>= (16 - info->var.blue.length); | |
1395 | ||
8503df65 | 1396 | if (regno >= 16) |
1da177e4 LT |
1397 | return 1; |
1398 | v = (red << info->var.red.offset) | | |
1399 | (green << info->var.green.offset) | | |
1400 | (blue << info->var.blue.offset); | |
1401 | ||
060b6002 | 1402 | cinfo->pseudo_palette[regno] = v; |
1da177e4 LT |
1403 | return 0; |
1404 | } | |
1405 | ||
8503df65 KH |
1406 | if (info->var.bits_per_pixel == 8) |
1407 | WClut(cinfo, regno, red >> 10, green >> 10, blue >> 10); | |
1da177e4 LT |
1408 | |
1409 | return 0; | |
1410 | ||
1411 | } | |
1412 | ||
1413 | /************************************************************************* | |
1414 | cirrusfb_pan_display() | |
1415 | ||
1416 | performs display panning - provided hardware permits this | |
1417 | **************************************************************************/ | |
8503df65 KH |
1418 | static int cirrusfb_pan_display(struct fb_var_screeninfo *var, |
1419 | struct fb_info *info) | |
1da177e4 LT |
1420 | { |
1421 | int xoffset = 0; | |
1422 | int yoffset = 0; | |
1423 | unsigned long base; | |
1424 | unsigned char tmp = 0, tmp2 = 0, xpix; | |
1425 | struct cirrusfb_info *cinfo = info->par; | |
1426 | ||
8503df65 KH |
1427 | DPRINTK("ENTER\n"); |
1428 | DPRINTK("virtual offset: (%d,%d)\n", var->xoffset, var->yoffset); | |
1da177e4 LT |
1429 | |
1430 | /* no range checks for xoffset and yoffset, */ | |
1431 | /* as fb_pan_display has already done this */ | |
1432 | if (var->vmode & FB_VMODE_YWRAP) | |
1433 | return -EINVAL; | |
1434 | ||
1435 | info->var.xoffset = var->xoffset; | |
1436 | info->var.yoffset = var->yoffset; | |
1437 | ||
1438 | xoffset = var->xoffset * info->var.bits_per_pixel / 8; | |
1439 | yoffset = var->yoffset; | |
1440 | ||
0ff1edee | 1441 | base = yoffset * info->fix.line_length + xoffset; |
1da177e4 LT |
1442 | |
1443 | if (info->var.bits_per_pixel == 1) { | |
1444 | /* base is already correct */ | |
1445 | xpix = (unsigned char) (var->xoffset % 8); | |
1446 | } else { | |
1447 | base /= 4; | |
1448 | xpix = (unsigned char) ((xoffset % 4) * 2); | |
1449 | } | |
1450 | ||
8503df65 | 1451 | cirrusfb_WaitBLT(cinfo->regbase); /* make sure all the BLT's are done */ |
1da177e4 LT |
1452 | |
1453 | /* lower 8 + 8 bits of screen start address */ | |
8503df65 KH |
1454 | vga_wcrt(cinfo->regbase, VGA_CRTC_START_LO, |
1455 | (unsigned char) (base & 0xff)); | |
1456 | vga_wcrt(cinfo->regbase, VGA_CRTC_START_HI, | |
1457 | (unsigned char) (base >> 8)); | |
1da177e4 LT |
1458 | |
1459 | /* construct bits 16, 17 and 18 of screen start address */ | |
1460 | if (base & 0x10000) | |
1461 | tmp |= 0x01; | |
1462 | if (base & 0x20000) | |
1463 | tmp |= 0x04; | |
1464 | if (base & 0x40000) | |
1465 | tmp |= 0x08; | |
1466 | ||
8503df65 KH |
1467 | /* 0xf2 is %11110010, exclude tmp bits */ |
1468 | tmp2 = (vga_rcrt(cinfo->regbase, CL_CRT1B) & 0xf2) | tmp; | |
1469 | vga_wcrt(cinfo->regbase, CL_CRT1B, tmp2); | |
1da177e4 LT |
1470 | |
1471 | /* construct bit 19 of screen start address */ | |
060b6002 KH |
1472 | if (cirrusfb_board_info[cinfo->btype].scrn_start_bit19) |
1473 | vga_wcrt(cinfo->regbase, CL_CRT1D, (base >> 12) & 0x80); | |
1da177e4 | 1474 | |
8503df65 KH |
1475 | /* write pixel panning value to AR33; this does not quite work in 8bpp |
1476 | * | |
1477 | * ### Piccolo..? Will this work? | |
1478 | */ | |
1da177e4 | 1479 | if (info->var.bits_per_pixel == 1) |
8503df65 | 1480 | vga_wattr(cinfo->regbase, CL_AR33, xpix); |
1da177e4 | 1481 | |
8503df65 | 1482 | cirrusfb_WaitBLT(cinfo->regbase); |
1da177e4 | 1483 | |
8503df65 KH |
1484 | DPRINTK("EXIT\n"); |
1485 | return 0; | |
1da177e4 LT |
1486 | } |
1487 | ||
8503df65 | 1488 | static int cirrusfb_blank(int blank_mode, struct fb_info *info) |
1da177e4 LT |
1489 | { |
1490 | /* | |
8503df65 KH |
1491 | * Blank the screen if blank_mode != 0, else unblank. If blank == NULL |
1492 | * then the caller blanks by setting the CLUT (Color Look Up Table) | |
1493 | * to all black. Return 0 if blanking succeeded, != 0 if un-/blanking | |
1494 | * failed due to e.g. a video mode which doesn't support it. | |
1495 | * Implements VESA suspend and powerdown modes on hardware that | |
1496 | * supports disabling hsync/vsync: | |
1497 | * blank_mode == 2: suspend vsync | |
1498 | * blank_mode == 3: suspend hsync | |
1499 | * blank_mode == 4: powerdown | |
1da177e4 LT |
1500 | */ |
1501 | unsigned char val; | |
1502 | struct cirrusfb_info *cinfo = info->par; | |
1503 | int current_mode = cinfo->blank_mode; | |
1504 | ||
8503df65 | 1505 | DPRINTK("ENTER, blank mode = %d\n", blank_mode); |
1da177e4 LT |
1506 | |
1507 | if (info->state != FBINFO_STATE_RUNNING || | |
1508 | current_mode == blank_mode) { | |
8503df65 | 1509 | DPRINTK("EXIT, returning 0\n"); |
1da177e4 LT |
1510 | return 0; |
1511 | } | |
1512 | ||
1513 | /* Undo current */ | |
1514 | if (current_mode == FB_BLANK_NORMAL || | |
1515 | current_mode == FB_BLANK_UNBLANK) { | |
1516 | /* unblank the screen */ | |
8503df65 KH |
1517 | val = vga_rseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE); |
1518 | /* clear "FullBandwidth" bit */ | |
1519 | vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, val & 0xdf); | |
1da177e4 | 1520 | /* and undo VESA suspend trickery */ |
8503df65 | 1521 | vga_wgfx(cinfo->regbase, CL_GRE, 0x00); |
1da177e4 LT |
1522 | } |
1523 | ||
1524 | /* set new */ | |
8503df65 | 1525 | if (blank_mode > FB_BLANK_NORMAL) { |
1da177e4 | 1526 | /* blank the screen */ |
8503df65 KH |
1527 | val = vga_rseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE); |
1528 | /* set "FullBandwidth" bit */ | |
1529 | vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, val | 0x20); | |
1da177e4 LT |
1530 | } |
1531 | ||
1532 | switch (blank_mode) { | |
1533 | case FB_BLANK_UNBLANK: | |
1534 | case FB_BLANK_NORMAL: | |
1535 | break; | |
1536 | case FB_BLANK_VSYNC_SUSPEND: | |
8503df65 | 1537 | vga_wgfx(cinfo->regbase, CL_GRE, 0x04); |
1da177e4 LT |
1538 | break; |
1539 | case FB_BLANK_HSYNC_SUSPEND: | |
8503df65 | 1540 | vga_wgfx(cinfo->regbase, CL_GRE, 0x02); |
1da177e4 LT |
1541 | break; |
1542 | case FB_BLANK_POWERDOWN: | |
8503df65 | 1543 | vga_wgfx(cinfo->regbase, CL_GRE, 0x06); |
1da177e4 LT |
1544 | break; |
1545 | default: | |
8503df65 | 1546 | DPRINTK("EXIT, returning 1\n"); |
1da177e4 LT |
1547 | return 1; |
1548 | } | |
1549 | ||
1550 | cinfo->blank_mode = blank_mode; | |
8503df65 | 1551 | DPRINTK("EXIT, returning 0\n"); |
1da177e4 LT |
1552 | |
1553 | /* Let fbcon do a soft blank for us */ | |
1554 | return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0; | |
1555 | } | |
1556 | /**** END Hardware specific Routines **************************************/ | |
1557 | /****************************************************************************/ | |
1558 | /**** BEGIN Internal Routines ***********************************************/ | |
1559 | ||
9199ec5c | 1560 | static void init_vgachip(struct fb_info *info) |
1da177e4 | 1561 | { |
9199ec5c | 1562 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 LT |
1563 | const struct cirrusfb_board_info_rec *bi; |
1564 | ||
8503df65 | 1565 | DPRINTK("ENTER\n"); |
1da177e4 | 1566 | |
8503df65 | 1567 | assert(cinfo != NULL); |
1da177e4 LT |
1568 | |
1569 | bi = &cirrusfb_board_info[cinfo->btype]; | |
1570 | ||
1571 | /* reset board globally */ | |
1572 | switch (cinfo->btype) { | |
1573 | case BT_PICCOLO: | |
8503df65 KH |
1574 | WSFR(cinfo, 0x01); |
1575 | udelay(500); | |
1576 | WSFR(cinfo, 0x51); | |
1577 | udelay(500); | |
1da177e4 LT |
1578 | break; |
1579 | case BT_PICASSO: | |
8503df65 KH |
1580 | WSFR2(cinfo, 0xff); |
1581 | udelay(500); | |
1da177e4 LT |
1582 | break; |
1583 | case BT_SD64: | |
1584 | case BT_SPECTRUM: | |
8503df65 KH |
1585 | WSFR(cinfo, 0x1f); |
1586 | udelay(500); | |
1587 | WSFR(cinfo, 0x4f); | |
1588 | udelay(500); | |
1da177e4 LT |
1589 | break; |
1590 | case BT_PICASSO4: | |
8503df65 KH |
1591 | /* disable flickerfixer */ |
1592 | vga_wcrt(cinfo->regbase, CL_CRT51, 0x00); | |
1593 | mdelay(100); | |
1594 | /* from Klaus' NetBSD driver: */ | |
1595 | vga_wgfx(cinfo->regbase, CL_GR2F, 0x00); | |
1596 | /* put blitter into 542x compat */ | |
1597 | vga_wgfx(cinfo->regbase, CL_GR33, 0x00); | |
1598 | /* mode */ | |
1599 | vga_wgfx(cinfo->regbase, CL_GR31, 0x00); | |
1da177e4 LT |
1600 | break; |
1601 | ||
1602 | case BT_GD5480: | |
8503df65 KH |
1603 | /* from Klaus' NetBSD driver: */ |
1604 | vga_wgfx(cinfo->regbase, CL_GR2F, 0x00); | |
1da177e4 LT |
1605 | break; |
1606 | ||
1607 | case BT_ALPINE: | |
1608 | /* Nothing to do to reset the board. */ | |
1609 | break; | |
1610 | ||
1611 | default: | |
8503df65 | 1612 | printk(KERN_ERR "cirrusfb: Warning: Unknown board type\n"); |
1da177e4 LT |
1613 | break; |
1614 | } | |
1615 | ||
9199ec5c KH |
1616 | /* make sure RAM size set by this point */ |
1617 | assert(info->screen_size > 0); | |
1da177e4 LT |
1618 | |
1619 | /* the P4 is not fully initialized here; I rely on it having been */ | |
1620 | /* inited under AmigaOS already, which seems to work just fine */ | |
8503df65 | 1621 | /* (Klaus advised to do it this way) */ |
1da177e4 LT |
1622 | |
1623 | if (cinfo->btype != BT_PICASSO4) { | |
8503df65 KH |
1624 | WGen(cinfo, CL_VSSM, 0x10); /* EGS: 0x16 */ |
1625 | WGen(cinfo, CL_POS102, 0x01); | |
1626 | WGen(cinfo, CL_VSSM, 0x08); /* EGS: 0x0e */ | |
1da177e4 LT |
1627 | |
1628 | if (cinfo->btype != BT_SD64) | |
8503df65 | 1629 | WGen(cinfo, CL_VSSM2, 0x01); |
1da177e4 | 1630 | |
8503df65 KH |
1631 | /* reset sequencer logic */ |
1632 | vga_wseq(cinfo->regbase, CL_SEQR0, 0x03); | |
1da177e4 | 1633 | |
8503df65 KH |
1634 | /* FullBandwidth (video off) and 8/9 dot clock */ |
1635 | vga_wseq(cinfo->regbase, VGA_SEQ_CLOCK_MODE, 0x21); | |
1636 | /* polarity (-/-), disable access to display memory, | |
1637 | * VGA_CRTC_START_HI base address: color | |
1638 | */ | |
1639 | WGen(cinfo, VGA_MIS_W, 0xc1); | |
1da177e4 | 1640 | |
8503df65 KH |
1641 | /* "magic cookie" - doesn't make any sense to me.. */ |
1642 | /* vga_wgfx(cinfo->regbase, CL_GRA, 0xce); */ | |
1643 | /* unlock all extension registers */ | |
1644 | vga_wseq(cinfo->regbase, CL_SEQR6, 0x12); | |
1da177e4 | 1645 | |
8503df65 KH |
1646 | /* reset blitter */ |
1647 | vga_wgfx(cinfo->regbase, CL_GR31, 0x04); | |
1da177e4 LT |
1648 | |
1649 | switch (cinfo->btype) { | |
1650 | case BT_GD5480: | |
8503df65 | 1651 | vga_wseq(cinfo->regbase, CL_SEQRF, 0x98); |
1da177e4 LT |
1652 | break; |
1653 | case BT_ALPINE: | |
1654 | break; | |
1655 | case BT_SD64: | |
8503df65 | 1656 | vga_wseq(cinfo->regbase, CL_SEQRF, 0xb8); |
1da177e4 LT |
1657 | break; |
1658 | default: | |
8503df65 KH |
1659 | vga_wseq(cinfo->regbase, CL_SEQR16, 0x0f); |
1660 | vga_wseq(cinfo->regbase, CL_SEQRF, 0xb0); | |
1da177e4 LT |
1661 | break; |
1662 | } | |
1663 | } | |
8503df65 KH |
1664 | /* plane mask: nothing */ |
1665 | vga_wseq(cinfo->regbase, VGA_SEQ_PLANE_WRITE, 0xff); | |
1666 | /* character map select: doesn't even matter in gx mode */ | |
1667 | vga_wseq(cinfo->regbase, VGA_SEQ_CHARACTER_MAP, 0x00); | |
1668 | /* memory mode: chain-4, no odd/even, ext. memory */ | |
1669 | vga_wseq(cinfo->regbase, VGA_SEQ_MEMORY_MODE, 0x0e); | |
1da177e4 LT |
1670 | |
1671 | /* controller-internal base address of video memory */ | |
1672 | if (bi->init_sr07) | |
8503df65 | 1673 | vga_wseq(cinfo->regbase, CL_SEQR7, bi->sr07); |
1da177e4 | 1674 | |
8503df65 KH |
1675 | /* vga_wseq(cinfo->regbase, CL_SEQR8, 0x00); */ |
1676 | /* EEPROM control: shouldn't be necessary to write to this at all.. */ | |
1da177e4 | 1677 | |
8503df65 KH |
1678 | /* graphics cursor X position (incomplete; position gives rem. 3 bits */ |
1679 | vga_wseq(cinfo->regbase, CL_SEQR10, 0x00); | |
1680 | /* graphics cursor Y position (..."... ) */ | |
1681 | vga_wseq(cinfo->regbase, CL_SEQR11, 0x00); | |
1682 | /* graphics cursor attributes */ | |
1683 | vga_wseq(cinfo->regbase, CL_SEQR12, 0x00); | |
1684 | /* graphics cursor pattern address */ | |
1685 | vga_wseq(cinfo->regbase, CL_SEQR13, 0x00); | |
1da177e4 LT |
1686 | |
1687 | /* writing these on a P4 might give problems.. */ | |
1688 | if (cinfo->btype != BT_PICASSO4) { | |
8503df65 KH |
1689 | /* configuration readback and ext. color */ |
1690 | vga_wseq(cinfo->regbase, CL_SEQR17, 0x00); | |
1691 | /* signature generator */ | |
1692 | vga_wseq(cinfo->regbase, CL_SEQR18, 0x02); | |
1da177e4 LT |
1693 | } |
1694 | ||
1695 | /* MCLK select etc. */ | |
1696 | if (bi->init_sr1f) | |
8503df65 KH |
1697 | vga_wseq(cinfo->regbase, CL_SEQR1F, bi->sr1f); |
1698 | ||
1699 | /* Screen A preset row scan: none */ | |
1700 | vga_wcrt(cinfo->regbase, VGA_CRTC_PRESET_ROW, 0x00); | |
1701 | /* Text cursor start: disable text cursor */ | |
1702 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_START, 0x20); | |
1703 | /* Text cursor end: - */ | |
1704 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_END, 0x00); | |
1705 | /* Screen start address high: 0 */ | |
1706 | vga_wcrt(cinfo->regbase, VGA_CRTC_START_HI, 0x00); | |
1707 | /* Screen start address low: 0 */ | |
1708 | vga_wcrt(cinfo->regbase, VGA_CRTC_START_LO, 0x00); | |
1709 | /* text cursor location high: 0 */ | |
1710 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_HI, 0x00); | |
1711 | /* text cursor location low: 0 */ | |
1712 | vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_LO, 0x00); | |
1713 | ||
1714 | /* Underline Row scanline: - */ | |
1715 | vga_wcrt(cinfo->regbase, VGA_CRTC_UNDERLINE, 0x00); | |
1716 | /* mode control: timing enable, byte mode, no compat modes */ | |
1717 | vga_wcrt(cinfo->regbase, VGA_CRTC_MODE, 0xc3); | |
1718 | /* Line Compare: not needed */ | |
1719 | vga_wcrt(cinfo->regbase, VGA_CRTC_LINE_COMPARE, 0x00); | |
1da177e4 | 1720 | /* ### add 0x40 for text modes with > 30 MHz pixclock */ |
8503df65 KH |
1721 | /* ext. display controls: ext.adr. wrap */ |
1722 | vga_wcrt(cinfo->regbase, CL_CRT1B, 0x02); | |
1723 | ||
1724 | /* Set/Reset registes: - */ | |
1725 | vga_wgfx(cinfo->regbase, VGA_GFX_SR_VALUE, 0x00); | |
1726 | /* Set/Reset enable: - */ | |
1727 | vga_wgfx(cinfo->regbase, VGA_GFX_SR_ENABLE, 0x00); | |
1728 | /* Color Compare: - */ | |
1729 | vga_wgfx(cinfo->regbase, VGA_GFX_COMPARE_VALUE, 0x00); | |
1730 | /* Data Rotate: - */ | |
1731 | vga_wgfx(cinfo->regbase, VGA_GFX_DATA_ROTATE, 0x00); | |
1732 | /* Read Map Select: - */ | |
1733 | vga_wgfx(cinfo->regbase, VGA_GFX_PLANE_READ, 0x00); | |
1734 | /* Mode: conf. for 16/4/2 color mode, no odd/even, read/write mode 0 */ | |
1735 | vga_wgfx(cinfo->regbase, VGA_GFX_MODE, 0x00); | |
1736 | /* Miscellaneous: memory map base address, graphics mode */ | |
1737 | vga_wgfx(cinfo->regbase, VGA_GFX_MISC, 0x01); | |
1738 | /* Color Don't care: involve all planes */ | |
1739 | vga_wgfx(cinfo->regbase, VGA_GFX_COMPARE_MASK, 0x0f); | |
1740 | /* Bit Mask: no mask at all */ | |
1741 | vga_wgfx(cinfo->regbase, VGA_GFX_BIT_MASK, 0xff); | |
1da177e4 | 1742 | if (cinfo->btype == BT_ALPINE) |
8503df65 KH |
1743 | /* (5434 can't have bit 3 set for bitblt) */ |
1744 | vga_wgfx(cinfo->regbase, CL_GRB, 0x20); | |
1da177e4 | 1745 | else |
8503df65 KH |
1746 | /* Graphics controller mode extensions: finer granularity, |
1747 | * 8byte data latches | |
1748 | */ | |
1749 | vga_wgfx(cinfo->regbase, CL_GRB, 0x28); | |
1750 | ||
1751 | vga_wgfx(cinfo->regbase, CL_GRC, 0xff); /* Color Key compare: - */ | |
1752 | vga_wgfx(cinfo->regbase, CL_GRD, 0x00); /* Color Key compare mask: - */ | |
1753 | vga_wgfx(cinfo->regbase, CL_GRE, 0x00); /* Miscellaneous control: - */ | |
1754 | /* Background color byte 1: - */ | |
1755 | /* vga_wgfx (cinfo->regbase, CL_GR10, 0x00); */ | |
1756 | /* vga_wgfx (cinfo->regbase, CL_GR11, 0x00); */ | |
1757 | ||
1758 | /* Attribute Controller palette registers: "identity mapping" */ | |
1759 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE0, 0x00); | |
1760 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE1, 0x01); | |
1761 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE2, 0x02); | |
1762 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE3, 0x03); | |
1763 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE4, 0x04); | |
1764 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE5, 0x05); | |
1765 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE6, 0x06); | |
1766 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE7, 0x07); | |
1767 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE8, 0x08); | |
1768 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTE9, 0x09); | |
1769 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEA, 0x0a); | |
1770 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEB, 0x0b); | |
1771 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEC, 0x0c); | |
1772 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTED, 0x0d); | |
1773 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEE, 0x0e); | |
1774 | vga_wattr(cinfo->regbase, VGA_ATC_PALETTEF, 0x0f); | |
1775 | ||
1776 | /* Attribute Controller mode: graphics mode */ | |
1777 | vga_wattr(cinfo->regbase, VGA_ATC_MODE, 0x01); | |
1778 | /* Overscan color reg.: reg. 0 */ | |
1779 | vga_wattr(cinfo->regbase, VGA_ATC_OVERSCAN, 0x00); | |
1780 | /* Color Plane enable: Enable all 4 planes */ | |
1781 | vga_wattr(cinfo->regbase, VGA_ATC_PLANE_ENABLE, 0x0f); | |
1782 | /* ### vga_wattr(cinfo->regbase, CL_AR33, 0x00); * Pixel Panning: - */ | |
1783 | /* Color Select: - */ | |
1784 | vga_wattr(cinfo->regbase, VGA_ATC_COLOR_PAGE, 0x00); | |
1785 | ||
1786 | WGen(cinfo, VGA_PEL_MSK, 0xff); /* Pixel mask: no mask */ | |
1da177e4 LT |
1787 | |
1788 | if (cinfo->btype != BT_ALPINE && cinfo->btype != BT_GD5480) | |
8503df65 KH |
1789 | /* polarity (-/-), enable display mem, |
1790 | * VGA_CRTC_START_HI i/o base = color | |
1791 | */ | |
1792 | WGen(cinfo, VGA_MIS_W, 0xc3); | |
1da177e4 | 1793 | |
8503df65 KH |
1794 | /* BLT Start/status: Blitter reset */ |
1795 | vga_wgfx(cinfo->regbase, CL_GR31, 0x04); | |
1796 | /* - " - : "end-of-reset" */ | |
1797 | vga_wgfx(cinfo->regbase, CL_GR31, 0x00); | |
1da177e4 LT |
1798 | |
1799 | /* misc... */ | |
8503df65 | 1800 | WHDR(cinfo, 0); /* Hidden DAC register: - */ |
1da177e4 | 1801 | |
8503df65 | 1802 | DPRINTK("EXIT\n"); |
1da177e4 LT |
1803 | return; |
1804 | } | |
1805 | ||
8503df65 | 1806 | static void switch_monitor(struct cirrusfb_info *cinfo, int on) |
1da177e4 LT |
1807 | { |
1808 | #ifdef CONFIG_ZORRO /* only works on Zorro boards */ | |
1809 | static int IsOn = 0; /* XXX not ok for multiple boards */ | |
1810 | ||
8503df65 | 1811 | DPRINTK("ENTER\n"); |
1da177e4 LT |
1812 | |
1813 | if (cinfo->btype == BT_PICASSO4) | |
1814 | return; /* nothing to switch */ | |
1815 | if (cinfo->btype == BT_ALPINE) | |
1816 | return; /* nothing to switch */ | |
1817 | if (cinfo->btype == BT_GD5480) | |
1818 | return; /* nothing to switch */ | |
1819 | if (cinfo->btype == BT_PICASSO) { | |
1820 | if ((on && !IsOn) || (!on && IsOn)) | |
8503df65 | 1821 | WSFR(cinfo, 0xff); |
1da177e4 | 1822 | |
8503df65 | 1823 | DPRINTK("EXIT\n"); |
1da177e4 LT |
1824 | return; |
1825 | } | |
1826 | if (on) { | |
1827 | switch (cinfo->btype) { | |
1828 | case BT_SD64: | |
8503df65 | 1829 | WSFR(cinfo, cinfo->SFR | 0x21); |
1da177e4 LT |
1830 | break; |
1831 | case BT_PICCOLO: | |
8503df65 | 1832 | WSFR(cinfo, cinfo->SFR | 0x28); |
1da177e4 LT |
1833 | break; |
1834 | case BT_SPECTRUM: | |
8503df65 | 1835 | WSFR(cinfo, 0x6f); |
1da177e4 LT |
1836 | break; |
1837 | default: /* do nothing */ break; | |
1838 | } | |
1839 | } else { | |
1840 | switch (cinfo->btype) { | |
1841 | case BT_SD64: | |
8503df65 | 1842 | WSFR(cinfo, cinfo->SFR & 0xde); |
1da177e4 LT |
1843 | break; |
1844 | case BT_PICCOLO: | |
8503df65 | 1845 | WSFR(cinfo, cinfo->SFR & 0xd7); |
1da177e4 LT |
1846 | break; |
1847 | case BT_SPECTRUM: | |
8503df65 | 1848 | WSFR(cinfo, 0x4f); |
1da177e4 LT |
1849 | break; |
1850 | default: /* do nothing */ break; | |
1851 | } | |
1852 | } | |
1853 | ||
8503df65 | 1854 | DPRINTK("EXIT\n"); |
1da177e4 LT |
1855 | #endif /* CONFIG_ZORRO */ |
1856 | } | |
1857 | ||
1da177e4 LT |
1858 | /******************************************/ |
1859 | /* Linux 2.6-style accelerated functions */ | |
1860 | /******************************************/ | |
1861 | ||
8503df65 KH |
1862 | static void cirrusfb_fillrect(struct fb_info *info, |
1863 | const struct fb_fillrect *region) | |
1da177e4 | 1864 | { |
1da177e4 LT |
1865 | struct fb_fillrect modded; |
1866 | int vxres, vyres; | |
060b6002 KH |
1867 | struct cirrusfb_info *cinfo = info->par; |
1868 | int m = info->var.bits_per_pixel; | |
1869 | u32 color = (info->fix.visual == FB_VISUAL_TRUECOLOR) ? | |
1870 | cinfo->pseudo_palette[region->color] : region->color; | |
1da177e4 LT |
1871 | |
1872 | if (info->state != FBINFO_STATE_RUNNING) | |
1873 | return; | |
1874 | if (info->flags & FBINFO_HWACCEL_DISABLED) { | |
1875 | cfb_fillrect(info, region); | |
1876 | return; | |
1877 | } | |
1878 | ||
1879 | vxres = info->var.xres_virtual; | |
1880 | vyres = info->var.yres_virtual; | |
1881 | ||
1882 | memcpy(&modded, region, sizeof(struct fb_fillrect)); | |
1883 | ||
8503df65 | 1884 | if (!modded.width || !modded.height || |
1da177e4 LT |
1885 | modded.dx >= vxres || modded.dy >= vyres) |
1886 | return; | |
1887 | ||
8503df65 KH |
1888 | if (modded.dx + modded.width > vxres) |
1889 | modded.width = vxres - modded.dx; | |
1890 | if (modded.dy + modded.height > vyres) | |
1891 | modded.height = vyres - modded.dy; | |
1da177e4 | 1892 | |
060b6002 KH |
1893 | cirrusfb_RectFill(cinfo->regbase, |
1894 | info->var.bits_per_pixel, | |
1895 | (region->dx * m) / 8, region->dy, | |
1896 | (region->width * m) / 8, region->height, | |
1897 | color, | |
0ff1edee | 1898 | info->fix.line_length); |
1da177e4 LT |
1899 | } |
1900 | ||
8503df65 KH |
1901 | static void cirrusfb_copyarea(struct fb_info *info, |
1902 | const struct fb_copyarea *area) | |
1da177e4 | 1903 | { |
1da177e4 LT |
1904 | struct fb_copyarea modded; |
1905 | u32 vxres, vyres; | |
060b6002 KH |
1906 | struct cirrusfb_info *cinfo = info->par; |
1907 | int m = info->var.bits_per_pixel; | |
1da177e4 LT |
1908 | |
1909 | if (info->state != FBINFO_STATE_RUNNING) | |
1910 | return; | |
1911 | if (info->flags & FBINFO_HWACCEL_DISABLED) { | |
1912 | cfb_copyarea(info, area); | |
1913 | return; | |
1914 | } | |
1915 | ||
1916 | vxres = info->var.xres_virtual; | |
1917 | vyres = info->var.yres_virtual; | |
060b6002 | 1918 | memcpy(&modded, area, sizeof(struct fb_copyarea)); |
1da177e4 | 1919 | |
8503df65 | 1920 | if (!modded.width || !modded.height || |
1da177e4 LT |
1921 | modded.sx >= vxres || modded.sy >= vyres || |
1922 | modded.dx >= vxres || modded.dy >= vyres) | |
1923 | return; | |
1924 | ||
8503df65 KH |
1925 | if (modded.sx + modded.width > vxres) |
1926 | modded.width = vxres - modded.sx; | |
1927 | if (modded.dx + modded.width > vxres) | |
1928 | modded.width = vxres - modded.dx; | |
1929 | if (modded.sy + modded.height > vyres) | |
1930 | modded.height = vyres - modded.sy; | |
1931 | if (modded.dy + modded.height > vyres) | |
1932 | modded.height = vyres - modded.dy; | |
1da177e4 | 1933 | |
060b6002 KH |
1934 | cirrusfb_BitBLT(cinfo->regbase, info->var.bits_per_pixel, |
1935 | (area->sx * m) / 8, area->sy, | |
1936 | (area->dx * m) / 8, area->dy, | |
1937 | (area->width * m) / 8, area->height, | |
0ff1edee | 1938 | info->fix.line_length); |
060b6002 | 1939 | |
1da177e4 LT |
1940 | } |
1941 | ||
8503df65 KH |
1942 | static void cirrusfb_imageblit(struct fb_info *info, |
1943 | const struct fb_image *image) | |
1da177e4 LT |
1944 | { |
1945 | struct cirrusfb_info *cinfo = info->par; | |
1946 | ||
8503df65 | 1947 | cirrusfb_WaitBLT(cinfo->regbase); |
1da177e4 LT |
1948 | cfb_imageblit(info, image); |
1949 | } | |
1950 | ||
1da177e4 LT |
1951 | #ifdef CONFIG_PPC_PREP |
1952 | #define PREP_VIDEO_BASE ((volatile unsigned long) 0xC0000000) | |
1953 | #define PREP_IO_BASE ((volatile unsigned char *) 0x80000000) | |
8503df65 | 1954 | static void get_prep_addrs(unsigned long *display, unsigned long *registers) |
1da177e4 | 1955 | { |
8503df65 | 1956 | DPRINTK("ENTER\n"); |
1da177e4 LT |
1957 | |
1958 | *display = PREP_VIDEO_BASE; | |
1959 | *registers = (unsigned long) PREP_IO_BASE; | |
1960 | ||
8503df65 | 1961 | DPRINTK("EXIT\n"); |
1da177e4 LT |
1962 | } |
1963 | ||
1964 | #endif /* CONFIG_PPC_PREP */ | |
1965 | ||
1da177e4 | 1966 | #ifdef CONFIG_PCI |
8503df65 | 1967 | static int release_io_ports; |
1da177e4 LT |
1968 | |
1969 | /* Pulled the logic from XFree86 Cirrus driver to get the memory size, | |
1970 | * based on the DRAM bandwidth bit and DRAM bank switching bit. This | |
1971 | * works with 1MB, 2MB and 4MB configurations (which the Motorola boards | |
1972 | * seem to have. */ | |
c395d3e8 | 1973 | static unsigned int __devinit cirrusfb_get_memsize(u8 __iomem *regbase) |
1da177e4 LT |
1974 | { |
1975 | unsigned long mem; | |
1976 | unsigned char SRF; | |
1977 | ||
8503df65 | 1978 | DPRINTK("ENTER\n"); |
1da177e4 | 1979 | |
8503df65 | 1980 | SRF = vga_rseq(regbase, CL_SEQRF); |
1da177e4 | 1981 | switch ((SRF & 0x18)) { |
8503df65 KH |
1982 | case 0x08: |
1983 | mem = 512 * 1024; | |
1984 | break; | |
1985 | case 0x10: | |
1986 | mem = 1024 * 1024; | |
1987 | break; | |
1988 | /* 64-bit DRAM data bus width; assume 2MB. Also indicates 2MB memory | |
1989 | * on the 5430. | |
1990 | */ | |
1991 | case 0x18: | |
1992 | mem = 2048 * 1024; | |
1993 | break; | |
1994 | default: | |
1995 | printk(KERN_WARNING "CLgenfb: Unknown memory size!\n"); | |
1da177e4 LT |
1996 | mem = 1024 * 1024; |
1997 | } | |
8503df65 KH |
1998 | if (SRF & 0x80) |
1999 | /* If DRAM bank switching is enabled, there must be twice as much | |
2000 | * memory installed. (4MB on the 5434) | |
2001 | */ | |
1da177e4 | 2002 | mem *= 2; |
8503df65 | 2003 | |
1da177e4 LT |
2004 | /* TODO: Handling of GD5446/5480 (see XF86 sources ...) */ |
2005 | ||
8503df65 | 2006 | DPRINTK("EXIT\n"); |
1da177e4 LT |
2007 | return mem; |
2008 | } | |
2009 | ||
8503df65 KH |
2010 | static void get_pci_addrs(const struct pci_dev *pdev, |
2011 | unsigned long *display, unsigned long *registers) | |
1da177e4 | 2012 | { |
8503df65 KH |
2013 | assert(pdev != NULL); |
2014 | assert(display != NULL); | |
2015 | assert(registers != NULL); | |
1da177e4 | 2016 | |
8503df65 | 2017 | DPRINTK("ENTER\n"); |
1da177e4 LT |
2018 | |
2019 | *display = 0; | |
2020 | *registers = 0; | |
2021 | ||
2022 | /* This is a best-guess for now */ | |
2023 | ||
2024 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { | |
2025 | *display = pci_resource_start(pdev, 1); | |
2026 | *registers = pci_resource_start(pdev, 0); | |
2027 | } else { | |
2028 | *display = pci_resource_start(pdev, 0); | |
2029 | *registers = pci_resource_start(pdev, 1); | |
2030 | } | |
2031 | ||
8503df65 | 2032 | assert(*display != 0); |
1da177e4 | 2033 | |
8503df65 | 2034 | DPRINTK("EXIT\n"); |
1da177e4 LT |
2035 | } |
2036 | ||
9199ec5c | 2037 | static void cirrusfb_pci_unmap(struct fb_info *info) |
1da177e4 | 2038 | { |
64beab14 | 2039 | struct pci_dev *pdev = to_pci_dev(info->device); |
1da177e4 | 2040 | |
9199ec5c | 2041 | iounmap(info->screen_base); |
1da177e4 LT |
2042 | #if 0 /* if system didn't claim this region, we would... */ |
2043 | release_mem_region(0xA0000, 65535); | |
2044 | #endif | |
2045 | if (release_io_ports) | |
2046 | release_region(0x3C0, 32); | |
2047 | pci_release_regions(pdev); | |
1da177e4 LT |
2048 | } |
2049 | #endif /* CONFIG_PCI */ | |
2050 | ||
1da177e4 | 2051 | #ifdef CONFIG_ZORRO |
f5ee051e | 2052 | static void cirrusfb_zorro_unmap(struct fb_info *info) |
1da177e4 | 2053 | { |
d91f5bb6 | 2054 | struct cirrusfb_info *cinfo = info->par; |
64beab14 KH |
2055 | struct zorro_dev *zdev = to_zorro_dev(info->device); |
2056 | ||
2057 | zorro_release_device(zdev); | |
1da177e4 LT |
2058 | |
2059 | if (cinfo->btype == BT_PICASSO4) { | |
2060 | cinfo->regbase -= 0x600000; | |
8503df65 | 2061 | iounmap((void *)cinfo->regbase); |
9199ec5c | 2062 | iounmap(info->screen_base); |
1da177e4 | 2063 | } else { |
64beab14 | 2064 | if (zorro_resource_start(zdev) > 0x01000000) |
9199ec5c | 2065 | iounmap(info->screen_base); |
1da177e4 | 2066 | } |
1da177e4 LT |
2067 | } |
2068 | #endif /* CONFIG_ZORRO */ | |
2069 | ||
c395d3e8 | 2070 | static int __devinit cirrusfb_set_fbinfo(struct fb_info *info) |
1da177e4 | 2071 | { |
9199ec5c | 2072 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 LT |
2073 | struct fb_var_screeninfo *var = &info->var; |
2074 | ||
1da177e4 LT |
2075 | info->pseudo_palette = cinfo->pseudo_palette; |
2076 | info->flags = FBINFO_DEFAULT | |
2077 | | FBINFO_HWACCEL_XPAN | |
2078 | | FBINFO_HWACCEL_YPAN | |
2079 | | FBINFO_HWACCEL_FILLRECT | |
2080 | | FBINFO_HWACCEL_COPYAREA; | |
2081 | if (noaccel) | |
2082 | info->flags |= FBINFO_HWACCEL_DISABLED; | |
2083 | info->fbops = &cirrusfb_ops; | |
1da177e4 LT |
2084 | if (cinfo->btype == BT_GD5480) { |
2085 | if (var->bits_per_pixel == 16) | |
2086 | info->screen_base += 1 * MB_; | |
1cea9a9a | 2087 | if (var->bits_per_pixel == 32) |
1da177e4 LT |
2088 | info->screen_base += 2 * MB_; |
2089 | } | |
2090 | ||
2091 | /* Fill fix common fields */ | |
2092 | strlcpy(info->fix.id, cirrusfb_board_info[cinfo->btype].name, | |
2093 | sizeof(info->fix.id)); | |
2094 | ||
2095 | /* monochrome: only 1 memory plane */ | |
2096 | /* 8 bit and above: Use whole memory area */ | |
9199ec5c KH |
2097 | info->fix.smem_len = info->screen_size; |
2098 | if (var->bits_per_pixel == 1) | |
2099 | info->fix.smem_len /= 4; | |
1da177e4 | 2100 | info->fix.type_aux = 0; |
1da177e4 LT |
2101 | info->fix.xpanstep = 1; |
2102 | info->fix.ypanstep = 1; | |
2103 | info->fix.ywrapstep = 0; | |
1da177e4 LT |
2104 | |
2105 | /* FIXME: map region at 0xB8000 if available, fill in here */ | |
1da177e4 LT |
2106 | info->fix.mmio_len = 0; |
2107 | info->fix.accel = FB_ACCEL_NONE; | |
2108 | ||
2109 | fb_alloc_cmap(&info->cmap, 256, 0); | |
2110 | ||
2111 | return 0; | |
2112 | } | |
2113 | ||
c395d3e8 | 2114 | static int __devinit cirrusfb_register(struct fb_info *info) |
1da177e4 | 2115 | { |
9199ec5c | 2116 | struct cirrusfb_info *cinfo = info->par; |
1da177e4 | 2117 | int err; |
7345de32 | 2118 | enum cirrus_board btype; |
1da177e4 | 2119 | |
8503df65 | 2120 | DPRINTK("ENTER\n"); |
1da177e4 | 2121 | |
8503df65 KH |
2122 | printk(KERN_INFO "cirrusfb: Driver for Cirrus Logic based " |
2123 | "graphic boards, v" CIRRUSFB_VERSION "\n"); | |
1da177e4 | 2124 | |
1da177e4 LT |
2125 | btype = cinfo->btype; |
2126 | ||
2127 | /* sanity checks */ | |
8503df65 | 2128 | assert(btype != BT_NONE); |
1da177e4 | 2129 | |
a1d35a7a KH |
2130 | /* set all the vital stuff */ |
2131 | cirrusfb_set_fbinfo(info); | |
2132 | ||
9199ec5c | 2133 | DPRINTK("cirrusfb: (RAM start set to: 0x%p)\n", info->screen_base); |
1da177e4 | 2134 | |
a1d35a7a KH |
2135 | err = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8); |
2136 | if (!err) { | |
2137 | DPRINTK("wrong initial video mode\n"); | |
2138 | err = -EINVAL; | |
2139 | goto err_dealloc_cmap; | |
2140 | } | |
2141 | ||
1da177e4 LT |
2142 | info->var.activate = FB_ACTIVATE_NOW; |
2143 | ||
2144 | err = cirrusfb_decode_var(&info->var, &cinfo->currentmode, info); | |
2145 | if (err < 0) { | |
2146 | /* should never happen */ | |
2147 | DPRINTK("choking on default var... umm, no good.\n"); | |
a1d35a7a | 2148 | goto err_dealloc_cmap; |
1da177e4 LT |
2149 | } |
2150 | ||
1da177e4 LT |
2151 | err = register_framebuffer(info); |
2152 | if (err < 0) { | |
8503df65 KH |
2153 | printk(KERN_ERR "cirrusfb: could not register " |
2154 | "fb device; err = %d!\n", err); | |
1da177e4 LT |
2155 | goto err_dealloc_cmap; |
2156 | } | |
2157 | ||
8503df65 | 2158 | DPRINTK("EXIT, returning 0\n"); |
1da177e4 LT |
2159 | return 0; |
2160 | ||
2161 | err_dealloc_cmap: | |
2162 | fb_dealloc_cmap(&info->cmap); | |
9199ec5c | 2163 | cinfo->unmap(info); |
060b6002 | 2164 | framebuffer_release(info); |
1da177e4 LT |
2165 | return err; |
2166 | } | |
2167 | ||
8503df65 | 2168 | static void __devexit cirrusfb_cleanup(struct fb_info *info) |
1da177e4 LT |
2169 | { |
2170 | struct cirrusfb_info *cinfo = info->par; | |
8503df65 | 2171 | DPRINTK("ENTER\n"); |
1da177e4 | 2172 | |
8503df65 | 2173 | switch_monitor(cinfo, 0); |
1da177e4 | 2174 | |
8503df65 KH |
2175 | unregister_framebuffer(info); |
2176 | fb_dealloc_cmap(&info->cmap); | |
2177 | printk("Framebuffer unregistered\n"); | |
9199ec5c | 2178 | cinfo->unmap(info); |
060b6002 | 2179 | framebuffer_release(info); |
1da177e4 | 2180 | |
8503df65 | 2181 | DPRINTK("EXIT\n"); |
1da177e4 LT |
2182 | } |
2183 | ||
1da177e4 | 2184 | #ifdef CONFIG_PCI |
c395d3e8 KH |
2185 | static int __devinit cirrusfb_pci_register(struct pci_dev *pdev, |
2186 | const struct pci_device_id *ent) | |
1da177e4 LT |
2187 | { |
2188 | struct cirrusfb_info *cinfo; | |
2189 | struct fb_info *info; | |
7345de32 | 2190 | enum cirrus_board btype; |
1da177e4 LT |
2191 | unsigned long board_addr, board_size; |
2192 | int ret; | |
2193 | ||
2194 | ret = pci_enable_device(pdev); | |
2195 | if (ret < 0) { | |
2196 | printk(KERN_ERR "cirrusfb: Cannot enable PCI device\n"); | |
2197 | goto err_out; | |
2198 | } | |
2199 | ||
2200 | info = framebuffer_alloc(sizeof(struct cirrusfb_info), &pdev->dev); | |
2201 | if (!info) { | |
2202 | printk(KERN_ERR "cirrusfb: could not allocate memory\n"); | |
2203 | ret = -ENOMEM; | |
2204 | goto err_disable; | |
2205 | } | |
2206 | ||
2207 | cinfo = info->par; | |
7345de32 | 2208 | cinfo->btype = btype = (enum cirrus_board) ent->driver_data; |
1da177e4 | 2209 | |
7345de32 | 2210 | DPRINTK(" Found PCI device, base address 0 is 0x%x, btype set to %d\n", |
1da177e4 | 2211 | pdev->resource[0].start, btype); |
7345de32 | 2212 | DPRINTK(" base address 1 is 0x%x\n", pdev->resource[1].start); |
1da177e4 | 2213 | |
8503df65 KH |
2214 | if (isPReP) { |
2215 | pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, 0x00000000); | |
1da177e4 | 2216 | #ifdef CONFIG_PPC_PREP |
9199ec5c | 2217 | get_prep_addrs(&board_addr, &info->fix.mmio_start); |
1da177e4 | 2218 | #endif |
8503df65 | 2219 | /* PReP dies if we ioremap the IO registers, but it works w/out... */ |
9199ec5c | 2220 | cinfo->regbase = (char __iomem *) info->fix.mmio_start; |
1da177e4 | 2221 | } else { |
8503df65 | 2222 | DPRINTK("Attempt to get PCI info for Cirrus Graphics Card\n"); |
9199ec5c | 2223 | get_pci_addrs(pdev, &board_addr, &info->fix.mmio_start); |
8503df65 KH |
2224 | /* FIXME: this forces VGA. alternatives? */ |
2225 | cinfo->regbase = NULL; | |
1da177e4 LT |
2226 | } |
2227 | ||
8503df65 | 2228 | DPRINTK("Board address: 0x%lx, register address: 0x%lx\n", |
9199ec5c | 2229 | board_addr, info->fix.mmio_start); |
1da177e4 LT |
2230 | |
2231 | board_size = (btype == BT_GD5480) ? | |
8503df65 | 2232 | 32 * MB_ : cirrusfb_get_memsize(cinfo->regbase); |
1da177e4 LT |
2233 | |
2234 | ret = pci_request_regions(pdev, "cirrusfb"); | |
8503df65 KH |
2235 | if (ret < 0) { |
2236 | printk(KERN_ERR "cirrusfb: cannot reserve region 0x%lx, " | |
2237 | "abort\n", | |
1da177e4 LT |
2238 | board_addr); |
2239 | goto err_release_fb; | |
2240 | } | |
2241 | #if 0 /* if the system didn't claim this region, we would... */ | |
2242 | if (!request_mem_region(0xA0000, 65535, "cirrusfb")) { | |
2243 | printk(KERN_ERR "cirrusfb: cannot reserve region 0x%lx, abort\n" | |
2244 | , | |
2245 | 0xA0000L); | |
2246 | ret = -EBUSY; | |
2247 | goto err_release_regions; | |
2248 | } | |
2249 | #endif | |
2250 | if (request_region(0x3C0, 32, "cirrusfb")) | |
2251 | release_io_ports = 1; | |
2252 | ||
9199ec5c KH |
2253 | info->screen_base = ioremap(board_addr, board_size); |
2254 | if (!info->screen_base) { | |
1da177e4 LT |
2255 | ret = -EIO; |
2256 | goto err_release_legacy; | |
2257 | } | |
2258 | ||
9199ec5c KH |
2259 | info->fix.smem_start = board_addr; |
2260 | info->screen_size = board_size; | |
1da177e4 LT |
2261 | cinfo->unmap = cirrusfb_pci_unmap; |
2262 | ||
e59b6a5a PDM |
2263 | printk(KERN_INFO "RAM (%lu kB) at 0x%lx, Cirrus " |
2264 | "Logic chipset on PCI bus\n", | |
2265 | info->screen_size >> 10, board_addr); | |
1da177e4 LT |
2266 | pci_set_drvdata(pdev, info); |
2267 | ||
9199ec5c | 2268 | ret = cirrusfb_register(info); |
d8b8c0a6 | 2269 | if (ret) |
9199ec5c | 2270 | iounmap(info->screen_base); |
d8b8c0a6 | 2271 | return ret; |
1da177e4 LT |
2272 | |
2273 | err_release_legacy: | |
2274 | if (release_io_ports) | |
2275 | release_region(0x3C0, 32); | |
2276 | #if 0 | |
2277 | release_mem_region(0xA0000, 65535); | |
2278 | err_release_regions: | |
2279 | #endif | |
2280 | pci_release_regions(pdev); | |
2281 | err_release_fb: | |
2282 | framebuffer_release(info); | |
2283 | err_disable: | |
1da177e4 LT |
2284 | err_out: |
2285 | return ret; | |
2286 | } | |
2287 | ||
8503df65 | 2288 | static void __devexit cirrusfb_pci_unregister(struct pci_dev *pdev) |
1da177e4 LT |
2289 | { |
2290 | struct fb_info *info = pci_get_drvdata(pdev); | |
8503df65 | 2291 | DPRINTK("ENTER\n"); |
1da177e4 | 2292 | |
8503df65 | 2293 | cirrusfb_cleanup(info); |
1da177e4 | 2294 | |
8503df65 | 2295 | DPRINTK("EXIT\n"); |
1da177e4 LT |
2296 | } |
2297 | ||
2298 | static struct pci_driver cirrusfb_pci_driver = { | |
2299 | .name = "cirrusfb", | |
2300 | .id_table = cirrusfb_pci_table, | |
2301 | .probe = cirrusfb_pci_register, | |
2302 | .remove = __devexit_p(cirrusfb_pci_unregister), | |
2303 | #ifdef CONFIG_PM | |
2304 | #if 0 | |
2305 | .suspend = cirrusfb_pci_suspend, | |
2306 | .resume = cirrusfb_pci_resume, | |
2307 | #endif | |
2308 | #endif | |
2309 | }; | |
2310 | #endif /* CONFIG_PCI */ | |
2311 | ||
1da177e4 | 2312 | #ifdef CONFIG_ZORRO |
c395d3e8 KH |
2313 | static int __devinit cirrusfb_zorro_register(struct zorro_dev *z, |
2314 | const struct zorro_device_id *ent) | |
1da177e4 LT |
2315 | { |
2316 | struct cirrusfb_info *cinfo; | |
2317 | struct fb_info *info; | |
7345de32 | 2318 | enum cirrus_board btype; |
1da177e4 LT |
2319 | struct zorro_dev *z2 = NULL; |
2320 | unsigned long board_addr, board_size, size; | |
2321 | int ret; | |
2322 | ||
2323 | btype = ent->driver_data; | |
2324 | if (cirrusfb_zorro_table2[btype].id2) | |
2325 | z2 = zorro_find_device(cirrusfb_zorro_table2[btype].id2, NULL); | |
2326 | size = cirrusfb_zorro_table2[btype].size; | |
2327 | printk(KERN_INFO "cirrusfb: %s board detected; ", | |
2328 | cirrusfb_board_info[btype].name); | |
2329 | ||
2330 | info = framebuffer_alloc(sizeof(struct cirrusfb_info), &z->dev); | |
2331 | if (!info) { | |
8503df65 | 2332 | printk(KERN_ERR "cirrusfb: could not allocate memory\n"); |
1da177e4 LT |
2333 | ret = -ENOMEM; |
2334 | goto err_out; | |
2335 | } | |
2336 | ||
2337 | cinfo = info->par; | |
1da177e4 LT |
2338 | cinfo->btype = btype; |
2339 | ||
36ea96a4 | 2340 | assert(z); |
8503df65 | 2341 | assert(btype != BT_NONE); |
1da177e4 | 2342 | |
1da177e4 LT |
2343 | board_addr = zorro_resource_start(z); |
2344 | board_size = zorro_resource_len(z); | |
9199ec5c | 2345 | info->screen_size = size; |
1da177e4 LT |
2346 | |
2347 | if (!zorro_request_device(z, "cirrusfb")) { | |
8503df65 KH |
2348 | printk(KERN_ERR "cirrusfb: cannot reserve region 0x%lx, " |
2349 | "abort\n", | |
1da177e4 LT |
2350 | board_addr); |
2351 | ret = -EBUSY; | |
2352 | goto err_release_fb; | |
2353 | } | |
2354 | ||
8503df65 | 2355 | printk(" RAM (%lu MB) at $%lx, ", board_size / MB_, board_addr); |
1da177e4 LT |
2356 | |
2357 | ret = -EIO; | |
2358 | ||
2359 | if (btype == BT_PICASSO4) { | |
8503df65 | 2360 | printk(KERN_INFO " REG at $%lx\n", board_addr + 0x600000); |
1da177e4 LT |
2361 | |
2362 | /* To be precise, for the P4 this is not the */ | |
2363 | /* begin of the board, but the begin of RAM. */ | |
2364 | /* for P4, map in its address space in 2 chunks (### TEST! ) */ | |
2365 | /* (note the ugly hardcoded 16M number) */ | |
8503df65 | 2366 | cinfo->regbase = ioremap(board_addr, 16777216); |
1da177e4 LT |
2367 | if (!cinfo->regbase) |
2368 | goto err_release_region; | |
2369 | ||
8503df65 KH |
2370 | DPRINTK("cirrusfb: Virtual address for board set to: $%p\n", |
2371 | cinfo->regbase); | |
1da177e4 | 2372 | cinfo->regbase += 0x600000; |
9199ec5c | 2373 | info->fix.mmio_start = board_addr + 0x600000; |
1da177e4 | 2374 | |
9199ec5c KH |
2375 | info->fix.smem_start = board_addr + 16777216; |
2376 | info->screen_base = ioremap(info->fix.smem_start, 16777216); | |
2377 | if (!info->screen_base) | |
1da177e4 LT |
2378 | goto err_unmap_regbase; |
2379 | } else { | |
8503df65 KH |
2380 | printk(KERN_INFO " REG at $%lx\n", |
2381 | (unsigned long) z2->resource.start); | |
1da177e4 | 2382 | |
9199ec5c | 2383 | info->fix.smem_start = board_addr; |
1da177e4 | 2384 | if (board_addr > 0x01000000) |
9199ec5c | 2385 | info->screen_base = ioremap(board_addr, board_size); |
1da177e4 | 2386 | else |
9199ec5c KH |
2387 | info->screen_base = (caddr_t) ZTWO_VADDR(board_addr); |
2388 | if (!info->screen_base) | |
1da177e4 LT |
2389 | goto err_release_region; |
2390 | ||
2391 | /* set address for REG area of board */ | |
8503df65 | 2392 | cinfo->regbase = (caddr_t) ZTWO_VADDR(z2->resource.start); |
9199ec5c | 2393 | info->fix.mmio_start = z2->resource.start; |
1da177e4 | 2394 | |
8503df65 KH |
2395 | DPRINTK("cirrusfb: Virtual address for board set to: $%p\n", |
2396 | cinfo->regbase); | |
1da177e4 LT |
2397 | } |
2398 | cinfo->unmap = cirrusfb_zorro_unmap; | |
2399 | ||
8503df65 | 2400 | printk(KERN_INFO "Cirrus Logic chipset on Zorro bus\n"); |
1da177e4 LT |
2401 | zorro_set_drvdata(z, info); |
2402 | ||
d91f5bb6 | 2403 | ret = cirrusfb_register(info); |
d8b8c0a6 AL |
2404 | if (ret) { |
2405 | if (btype == BT_PICASSO4) { | |
9199ec5c | 2406 | iounmap(info->screen_base); |
d8b8c0a6 AL |
2407 | iounmap(cinfo->regbase - 0x600000); |
2408 | } else if (board_addr > 0x01000000) | |
9199ec5c | 2409 | iounmap(info->screen_base); |
d8b8c0a6 AL |
2410 | } |
2411 | return ret; | |
1da177e4 LT |
2412 | |
2413 | err_unmap_regbase: | |
2414 | /* Parental advisory: explicit hack */ | |
2415 | iounmap(cinfo->regbase - 0x600000); | |
2416 | err_release_region: | |
2417 | release_region(board_addr, board_size); | |
2418 | err_release_fb: | |
2419 | framebuffer_release(info); | |
2420 | err_out: | |
2421 | return ret; | |
2422 | } | |
2423 | ||
2424 | void __devexit cirrusfb_zorro_unregister(struct zorro_dev *z) | |
2425 | { | |
2426 | struct fb_info *info = zorro_get_drvdata(z); | |
8503df65 | 2427 | DPRINTK("ENTER\n"); |
1da177e4 | 2428 | |
8503df65 | 2429 | cirrusfb_cleanup(info); |
1da177e4 | 2430 | |
8503df65 | 2431 | DPRINTK("EXIT\n"); |
1da177e4 LT |
2432 | } |
2433 | ||
2434 | static struct zorro_driver cirrusfb_zorro_driver = { | |
2435 | .name = "cirrusfb", | |
2436 | .id_table = cirrusfb_zorro_table, | |
2437 | .probe = cirrusfb_zorro_register, | |
2438 | .remove = __devexit_p(cirrusfb_zorro_unregister), | |
2439 | }; | |
2440 | #endif /* CONFIG_ZORRO */ | |
2441 | ||
2442 | static int __init cirrusfb_init(void) | |
2443 | { | |
2444 | int error = 0; | |
2445 | ||
2446 | #ifndef MODULE | |
2447 | char *option = NULL; | |
2448 | ||
2449 | if (fb_get_options("cirrusfb", &option)) | |
2450 | return -ENODEV; | |
2451 | cirrusfb_setup(option); | |
2452 | #endif | |
2453 | ||
2454 | #ifdef CONFIG_ZORRO | |
33d8675e | 2455 | error |= zorro_register_driver(&cirrusfb_zorro_driver); |
1da177e4 LT |
2456 | #endif |
2457 | #ifdef CONFIG_PCI | |
2458 | error |= pci_register_driver(&cirrusfb_pci_driver); | |
2459 | #endif | |
2460 | return error; | |
2461 | } | |
2462 | ||
1da177e4 LT |
2463 | #ifndef MODULE |
2464 | static int __init cirrusfb_setup(char *options) { | |
ee11940f | 2465 | char *this_opt; |
1da177e4 | 2466 | |
8503df65 | 2467 | DPRINTK("ENTER\n"); |
1da177e4 LT |
2468 | |
2469 | if (!options || !*options) | |
2470 | return 0; | |
2471 | ||
8503df65 | 2472 | while ((this_opt = strsep(&options, ",")) != NULL) { |
a1d35a7a KH |
2473 | if (!*this_opt) |
2474 | continue; | |
1da177e4 LT |
2475 | |
2476 | DPRINTK("cirrusfb_setup: option '%s'\n", this_opt); | |
2477 | ||
1da177e4 LT |
2478 | if (!strcmp(this_opt, "noaccel")) |
2479 | noaccel = 1; | |
a1d35a7a KH |
2480 | else if (!strncmp(this_opt, "mode:", 5)) |
2481 | mode_option = this_opt + 5; | |
2482 | else | |
2483 | mode_option = this_opt; | |
1da177e4 LT |
2484 | } |
2485 | return 0; | |
2486 | } | |
2487 | #endif | |
2488 | ||
1da177e4 LT |
2489 | /* |
2490 | * Modularization | |
2491 | */ | |
2492 | ||
2493 | MODULE_AUTHOR("Copyright 1999,2000 Jeff Garzik <jgarzik@pobox.com>"); | |
2494 | MODULE_DESCRIPTION("Accelerated FBDev driver for Cirrus Logic chips"); | |
2495 | MODULE_LICENSE("GPL"); | |
2496 | ||
8503df65 | 2497 | static void __exit cirrusfb_exit(void) |
1da177e4 LT |
2498 | { |
2499 | #ifdef CONFIG_PCI | |
2500 | pci_unregister_driver(&cirrusfb_pci_driver); | |
2501 | #endif | |
2502 | #ifdef CONFIG_ZORRO | |
2503 | zorro_unregister_driver(&cirrusfb_zorro_driver); | |
2504 | #endif | |
2505 | } | |
2506 | ||
2507 | module_init(cirrusfb_init); | |
2508 | ||
a1d35a7a KH |
2509 | module_param(mode_option, charp, 0); |
2510 | MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'"); | |
55a0dd83 KH |
2511 | module_param(noaccel, bool, 0); |
2512 | MODULE_PARM_DESC(noaccel, "Disable acceleration"); | |
a1d35a7a | 2513 | |
1da177e4 LT |
2514 | #ifdef MODULE |
2515 | module_exit(cirrusfb_exit); | |
2516 | #endif | |
2517 | ||
1da177e4 LT |
2518 | /**********************************************************************/ |
2519 | /* about the following functions - I have used the same names for the */ | |
2520 | /* functions as Markus Wild did in his Retina driver for NetBSD as */ | |
2521 | /* they just made sense for this purpose. Apart from that, I wrote */ | |
8503df65 | 2522 | /* these functions myself. */ |
1da177e4 LT |
2523 | /**********************************************************************/ |
2524 | ||
2525 | /*** WGen() - write into one of the external/general registers ***/ | |
8503df65 | 2526 | static void WGen(const struct cirrusfb_info *cinfo, |
1da177e4 LT |
2527 | int regnum, unsigned char val) |
2528 | { | |
2529 | unsigned long regofs = 0; | |
2530 | ||
2531 | if (cinfo->btype == BT_PICASSO) { | |
2532 | /* Picasso II specific hack */ | |
8503df65 KH |
2533 | /* if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D || |
2534 | regnum == CL_VSSM2) */ | |
1da177e4 LT |
2535 | if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D) |
2536 | regofs = 0xfff; | |
2537 | } | |
2538 | ||
8503df65 | 2539 | vga_w(cinfo->regbase, regofs + regnum, val); |
1da177e4 LT |
2540 | } |
2541 | ||
2542 | /*** RGen() - read out one of the external/general registers ***/ | |
8503df65 | 2543 | static unsigned char RGen(const struct cirrusfb_info *cinfo, int regnum) |
1da177e4 LT |
2544 | { |
2545 | unsigned long regofs = 0; | |
2546 | ||
2547 | if (cinfo->btype == BT_PICASSO) { | |
2548 | /* Picasso II specific hack */ | |
8503df65 KH |
2549 | /* if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D || |
2550 | regnum == CL_VSSM2) */ | |
1da177e4 LT |
2551 | if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D) |
2552 | regofs = 0xfff; | |
2553 | } | |
2554 | ||
8503df65 | 2555 | return vga_r(cinfo->regbase, regofs + regnum); |
1da177e4 LT |
2556 | } |
2557 | ||
2558 | /*** AttrOn() - turn on VideoEnable for Attribute controller ***/ | |
8503df65 | 2559 | static void AttrOn(const struct cirrusfb_info *cinfo) |
1da177e4 | 2560 | { |
8503df65 | 2561 | assert(cinfo != NULL); |
1da177e4 | 2562 | |
8503df65 | 2563 | DPRINTK("ENTER\n"); |
1da177e4 | 2564 | |
8503df65 | 2565 | if (vga_rcrt(cinfo->regbase, CL_CRT24) & 0x80) { |
1da177e4 LT |
2566 | /* if we're just in "write value" mode, write back the */ |
2567 | /* same value as before to not modify anything */ | |
8503df65 KH |
2568 | vga_w(cinfo->regbase, VGA_ATT_IW, |
2569 | vga_r(cinfo->regbase, VGA_ATT_R)); | |
1da177e4 LT |
2570 | } |
2571 | /* turn on video bit */ | |
8503df65 KH |
2572 | /* vga_w(cinfo->regbase, VGA_ATT_IW, 0x20); */ |
2573 | vga_w(cinfo->regbase, VGA_ATT_IW, 0x33); | |
1da177e4 LT |
2574 | |
2575 | /* dummy write on Reg0 to be on "write index" mode next time */ | |
8503df65 | 2576 | vga_w(cinfo->regbase, VGA_ATT_IW, 0x00); |
1da177e4 | 2577 | |
8503df65 | 2578 | DPRINTK("EXIT\n"); |
1da177e4 LT |
2579 | } |
2580 | ||
2581 | /*** WHDR() - write into the Hidden DAC register ***/ | |
2582 | /* as the HDR is the only extension register that requires special treatment | |
2583 | * (the other extension registers are accessible just like the "ordinary" | |
2584 | * registers of their functional group) here is a specialized routine for | |
2585 | * accessing the HDR | |
2586 | */ | |
8503df65 | 2587 | static void WHDR(const struct cirrusfb_info *cinfo, unsigned char val) |
1da177e4 LT |
2588 | { |
2589 | unsigned char dummy; | |
2590 | ||
2591 | if (cinfo->btype == BT_PICASSO) { | |
2592 | /* Klaus' hint for correct access to HDR on some boards */ | |
2593 | /* first write 0 to pixel mask (3c6) */ | |
8503df65 KH |
2594 | WGen(cinfo, VGA_PEL_MSK, 0x00); |
2595 | udelay(200); | |
1da177e4 | 2596 | /* next read dummy from pixel address (3c8) */ |
8503df65 KH |
2597 | dummy = RGen(cinfo, VGA_PEL_IW); |
2598 | udelay(200); | |
1da177e4 LT |
2599 | } |
2600 | /* now do the usual stuff to access the HDR */ | |
2601 | ||
8503df65 KH |
2602 | dummy = RGen(cinfo, VGA_PEL_MSK); |
2603 | udelay(200); | |
2604 | dummy = RGen(cinfo, VGA_PEL_MSK); | |
2605 | udelay(200); | |
2606 | dummy = RGen(cinfo, VGA_PEL_MSK); | |
2607 | udelay(200); | |
2608 | dummy = RGen(cinfo, VGA_PEL_MSK); | |
2609 | udelay(200); | |
1da177e4 | 2610 | |
8503df65 KH |
2611 | WGen(cinfo, VGA_PEL_MSK, val); |
2612 | udelay(200); | |
1da177e4 LT |
2613 | |
2614 | if (cinfo->btype == BT_PICASSO) { | |
2615 | /* now first reset HDR access counter */ | |
8503df65 KH |
2616 | dummy = RGen(cinfo, VGA_PEL_IW); |
2617 | udelay(200); | |
1da177e4 LT |
2618 | |
2619 | /* and at the end, restore the mask value */ | |
2620 | /* ## is this mask always 0xff? */ | |
8503df65 KH |
2621 | WGen(cinfo, VGA_PEL_MSK, 0xff); |
2622 | udelay(200); | |
1da177e4 LT |
2623 | } |
2624 | } | |
2625 | ||
1da177e4 | 2626 | /*** WSFR() - write to the "special function register" (SFR) ***/ |
8503df65 | 2627 | static void WSFR(struct cirrusfb_info *cinfo, unsigned char val) |
1da177e4 LT |
2628 | { |
2629 | #ifdef CONFIG_ZORRO | |
8503df65 | 2630 | assert(cinfo->regbase != NULL); |
1da177e4 | 2631 | cinfo->SFR = val; |
8503df65 | 2632 | z_writeb(val, cinfo->regbase + 0x8000); |
1da177e4 LT |
2633 | #endif |
2634 | } | |
2635 | ||
2636 | /* The Picasso has a second register for switching the monitor bit */ | |
8503df65 | 2637 | static void WSFR2(struct cirrusfb_info *cinfo, unsigned char val) |
1da177e4 LT |
2638 | { |
2639 | #ifdef CONFIG_ZORRO | |
2640 | /* writing an arbitrary value to this one causes the monitor switcher */ | |
2641 | /* to flip to Amiga display */ | |
8503df65 | 2642 | assert(cinfo->regbase != NULL); |
1da177e4 | 2643 | cinfo->SFR = val; |
8503df65 | 2644 | z_writeb(val, cinfo->regbase + 0x9000); |
1da177e4 LT |
2645 | #endif |
2646 | } | |
2647 | ||
1da177e4 | 2648 | /*** WClut - set CLUT entry (range: 0..63) ***/ |
8503df65 | 2649 | static void WClut(struct cirrusfb_info *cinfo, unsigned char regnum, unsigned char red, |
1da177e4 LT |
2650 | unsigned char green, unsigned char blue) |
2651 | { | |
2652 | unsigned int data = VGA_PEL_D; | |
2653 | ||
2654 | /* address write mode register is not translated.. */ | |
8503df65 | 2655 | vga_w(cinfo->regbase, VGA_PEL_IW, regnum); |
1da177e4 LT |
2656 | |
2657 | if (cinfo->btype == BT_PICASSO || cinfo->btype == BT_PICASSO4 || | |
2658 | cinfo->btype == BT_ALPINE || cinfo->btype == BT_GD5480) { | |
2659 | /* but DAC data register IS, at least for Picasso II */ | |
2660 | if (cinfo->btype == BT_PICASSO) | |
2661 | data += 0xfff; | |
8503df65 KH |
2662 | vga_w(cinfo->regbase, data, red); |
2663 | vga_w(cinfo->regbase, data, green); | |
2664 | vga_w(cinfo->regbase, data, blue); | |
1da177e4 | 2665 | } else { |
8503df65 KH |
2666 | vga_w(cinfo->regbase, data, blue); |
2667 | vga_w(cinfo->regbase, data, green); | |
2668 | vga_w(cinfo->regbase, data, red); | |
1da177e4 LT |
2669 | } |
2670 | } | |
2671 | ||
1da177e4 LT |
2672 | #if 0 |
2673 | /*** RClut - read CLUT entry (range 0..63) ***/ | |
8503df65 | 2674 | static void RClut(struct cirrusfb_info *cinfo, unsigned char regnum, unsigned char *red, |
1da177e4 LT |
2675 | unsigned char *green, unsigned char *blue) |
2676 | { | |
2677 | unsigned int data = VGA_PEL_D; | |
2678 | ||
8503df65 | 2679 | vga_w(cinfo->regbase, VGA_PEL_IR, regnum); |
1da177e4 LT |
2680 | |
2681 | if (cinfo->btype == BT_PICASSO || cinfo->btype == BT_PICASSO4 || | |
2682 | cinfo->btype == BT_ALPINE || cinfo->btype == BT_GD5480) { | |
2683 | if (cinfo->btype == BT_PICASSO) | |
2684 | data += 0xfff; | |
8503df65 KH |
2685 | *red = vga_r(cinfo->regbase, data); |
2686 | *green = vga_r(cinfo->regbase, data); | |
2687 | *blue = vga_r(cinfo->regbase, data); | |
1da177e4 | 2688 | } else { |
8503df65 KH |
2689 | *blue = vga_r(cinfo->regbase, data); |
2690 | *green = vga_r(cinfo->regbase, data); | |
2691 | *red = vga_r(cinfo->regbase, data); | |
1da177e4 LT |
2692 | } |
2693 | } | |
2694 | #endif | |
2695 | ||
1da177e4 LT |
2696 | /******************************************************************* |
2697 | cirrusfb_WaitBLT() | |
2698 | ||
2699 | Wait for the BitBLT engine to complete a possible earlier job | |
2700 | *********************************************************************/ | |
2701 | ||
2702 | /* FIXME: use interrupts instead */ | |
8503df65 | 2703 | static void cirrusfb_WaitBLT(u8 __iomem *regbase) |
1da177e4 LT |
2704 | { |
2705 | /* now busy-wait until we're done */ | |
8503df65 | 2706 | while (vga_rgfx(regbase, CL_GR31) & 0x08) |
1da177e4 LT |
2707 | /* do nothing */ ; |
2708 | } | |
2709 | ||
2710 | /******************************************************************* | |
2711 | cirrusfb_BitBLT() | |
2712 | ||
2713 | perform accelerated "scrolling" | |
2714 | ********************************************************************/ | |
2715 | ||
8503df65 KH |
2716 | static void cirrusfb_BitBLT(u8 __iomem *regbase, int bits_per_pixel, |
2717 | u_short curx, u_short cury, | |
2718 | u_short destx, u_short desty, | |
2719 | u_short width, u_short height, | |
2720 | u_short line_length) | |
1da177e4 LT |
2721 | { |
2722 | u_short nwidth, nheight; | |
2723 | u_long nsrc, ndest; | |
2724 | u_char bltmode; | |
2725 | ||
8503df65 | 2726 | DPRINTK("ENTER\n"); |
1da177e4 LT |
2727 | |
2728 | nwidth = width - 1; | |
2729 | nheight = height - 1; | |
2730 | ||
2731 | bltmode = 0x00; | |
2732 | /* if source adr < dest addr, do the Blt backwards */ | |
2733 | if (cury <= desty) { | |
2734 | if (cury == desty) { | |
2735 | /* if src and dest are on the same line, check x */ | |
2736 | if (curx < destx) | |
2737 | bltmode |= 0x01; | |
2738 | } else | |
2739 | bltmode |= 0x01; | |
2740 | } | |
2741 | if (!bltmode) { | |
2742 | /* standard case: forward blitting */ | |
2743 | nsrc = (cury * line_length) + curx; | |
2744 | ndest = (desty * line_length) + destx; | |
2745 | } else { | |
8503df65 KH |
2746 | /* this means start addresses are at the end, |
2747 | * counting backwards | |
2748 | */ | |
2749 | nsrc = cury * line_length + curx + | |
2750 | nheight * line_length + nwidth; | |
2751 | ndest = desty * line_length + destx + | |
2752 | nheight * line_length + nwidth; | |
1da177e4 LT |
2753 | } |
2754 | ||
2755 | /* | |
2756 | run-down of registers to be programmed: | |
2757 | destination pitch | |
2758 | source pitch | |
2759 | BLT width/height | |
2760 | source start | |
2761 | destination start | |
2762 | BLT mode | |
2763 | BLT ROP | |
2764 | VGA_GFX_SR_VALUE / VGA_GFX_SR_ENABLE: "fill color" | |
2765 | start/stop | |
2766 | */ | |
2767 | ||
8503df65 | 2768 | cirrusfb_WaitBLT(regbase); |
1da177e4 LT |
2769 | |
2770 | /* pitch: set to line_length */ | |
8503df65 KH |
2771 | /* dest pitch low */ |
2772 | vga_wgfx(regbase, CL_GR24, line_length & 0xff); | |
2773 | /* dest pitch hi */ | |
2774 | vga_wgfx(regbase, CL_GR25, line_length >> 8); | |
2775 | /* source pitch low */ | |
2776 | vga_wgfx(regbase, CL_GR26, line_length & 0xff); | |
2777 | /* source pitch hi */ | |
2778 | vga_wgfx(regbase, CL_GR27, line_length >> 8); | |
1da177e4 LT |
2779 | |
2780 | /* BLT width: actual number of pixels - 1 */ | |
8503df65 KH |
2781 | /* BLT width low */ |
2782 | vga_wgfx(regbase, CL_GR20, nwidth & 0xff); | |
2783 | /* BLT width hi */ | |
2784 | vga_wgfx(regbase, CL_GR21, nwidth >> 8); | |
1da177e4 LT |
2785 | |
2786 | /* BLT height: actual number of lines -1 */ | |
8503df65 KH |
2787 | /* BLT height low */ |
2788 | vga_wgfx(regbase, CL_GR22, nheight & 0xff); | |
2789 | /* BLT width hi */ | |
2790 | vga_wgfx(regbase, CL_GR23, nheight >> 8); | |
1da177e4 LT |
2791 | |
2792 | /* BLT destination */ | |
8503df65 KH |
2793 | /* BLT dest low */ |
2794 | vga_wgfx(regbase, CL_GR28, (u_char) (ndest & 0xff)); | |
2795 | /* BLT dest mid */ | |
2796 | vga_wgfx(regbase, CL_GR29, (u_char) (ndest >> 8)); | |
2797 | /* BLT dest hi */ | |
2798 | vga_wgfx(regbase, CL_GR2A, (u_char) (ndest >> 16)); | |
1da177e4 LT |
2799 | |
2800 | /* BLT source */ | |
8503df65 KH |
2801 | /* BLT src low */ |
2802 | vga_wgfx(regbase, CL_GR2C, (u_char) (nsrc & 0xff)); | |
2803 | /* BLT src mid */ | |
2804 | vga_wgfx(regbase, CL_GR2D, (u_char) (nsrc >> 8)); | |
2805 | /* BLT src hi */ | |
2806 | vga_wgfx(regbase, CL_GR2E, (u_char) (nsrc >> 16)); | |
1da177e4 LT |
2807 | |
2808 | /* BLT mode */ | |
8503df65 | 2809 | vga_wgfx(regbase, CL_GR30, bltmode); /* BLT mode */ |
1da177e4 LT |
2810 | |
2811 | /* BLT ROP: SrcCopy */ | |
8503df65 | 2812 | vga_wgfx(regbase, CL_GR32, 0x0d); /* BLT ROP */ |
1da177e4 LT |
2813 | |
2814 | /* and finally: GO! */ | |
8503df65 | 2815 | vga_wgfx(regbase, CL_GR31, 0x02); /* BLT Start/status */ |
1da177e4 | 2816 | |
8503df65 | 2817 | DPRINTK("EXIT\n"); |
1da177e4 LT |
2818 | } |
2819 | ||
1da177e4 LT |
2820 | /******************************************************************* |
2821 | cirrusfb_RectFill() | |
2822 | ||
2823 | perform accelerated rectangle fill | |
2824 | ********************************************************************/ | |
2825 | ||
8503df65 | 2826 | static void cirrusfb_RectFill(u8 __iomem *regbase, int bits_per_pixel, |
1da177e4 LT |
2827 | u_short x, u_short y, u_short width, u_short height, |
2828 | u_char color, u_short line_length) | |
2829 | { | |
2830 | u_short nwidth, nheight; | |
2831 | u_long ndest; | |
2832 | u_char op; | |
2833 | ||
8503df65 | 2834 | DPRINTK("ENTER\n"); |
1da177e4 LT |
2835 | |
2836 | nwidth = width - 1; | |
2837 | nheight = height - 1; | |
2838 | ||
2839 | ndest = (y * line_length) + x; | |
2840 | ||
8503df65 | 2841 | cirrusfb_WaitBLT(regbase); |
1da177e4 LT |
2842 | |
2843 | /* pitch: set to line_length */ | |
8503df65 KH |
2844 | vga_wgfx(regbase, CL_GR24, line_length & 0xff); /* dest pitch low */ |
2845 | vga_wgfx(regbase, CL_GR25, line_length >> 8); /* dest pitch hi */ | |
2846 | vga_wgfx(regbase, CL_GR26, line_length & 0xff); /* source pitch low */ | |
2847 | vga_wgfx(regbase, CL_GR27, line_length >> 8); /* source pitch hi */ | |
1da177e4 LT |
2848 | |
2849 | /* BLT width: actual number of pixels - 1 */ | |
8503df65 KH |
2850 | vga_wgfx(regbase, CL_GR20, nwidth & 0xff); /* BLT width low */ |
2851 | vga_wgfx(regbase, CL_GR21, nwidth >> 8); /* BLT width hi */ | |
1da177e4 LT |
2852 | |
2853 | /* BLT height: actual number of lines -1 */ | |
8503df65 KH |
2854 | vga_wgfx(regbase, CL_GR22, nheight & 0xff); /* BLT height low */ |
2855 | vga_wgfx(regbase, CL_GR23, nheight >> 8); /* BLT width hi */ | |
1da177e4 LT |
2856 | |
2857 | /* BLT destination */ | |
8503df65 KH |
2858 | /* BLT dest low */ |
2859 | vga_wgfx(regbase, CL_GR28, (u_char) (ndest & 0xff)); | |
2860 | /* BLT dest mid */ | |
2861 | vga_wgfx(regbase, CL_GR29, (u_char) (ndest >> 8)); | |
2862 | /* BLT dest hi */ | |
2863 | vga_wgfx(regbase, CL_GR2A, (u_char) (ndest >> 16)); | |
1da177e4 LT |
2864 | |
2865 | /* BLT source: set to 0 (is a dummy here anyway) */ | |
8503df65 KH |
2866 | vga_wgfx(regbase, CL_GR2C, 0x00); /* BLT src low */ |
2867 | vga_wgfx(regbase, CL_GR2D, 0x00); /* BLT src mid */ | |
2868 | vga_wgfx(regbase, CL_GR2E, 0x00); /* BLT src hi */ | |
1da177e4 LT |
2869 | |
2870 | /* This is a ColorExpand Blt, using the */ | |
2871 | /* same color for foreground and background */ | |
8503df65 KH |
2872 | vga_wgfx(regbase, VGA_GFX_SR_VALUE, color); /* foreground color */ |
2873 | vga_wgfx(regbase, VGA_GFX_SR_ENABLE, color); /* background color */ | |
1da177e4 LT |
2874 | |
2875 | op = 0xc0; | |
2876 | if (bits_per_pixel == 16) { | |
8503df65 KH |
2877 | vga_wgfx(regbase, CL_GR10, color); /* foreground color */ |
2878 | vga_wgfx(regbase, CL_GR11, color); /* background color */ | |
1da177e4 LT |
2879 | op = 0x50; |
2880 | op = 0xd0; | |
2881 | } else if (bits_per_pixel == 32) { | |
8503df65 KH |
2882 | vga_wgfx(regbase, CL_GR10, color); /* foreground color */ |
2883 | vga_wgfx(regbase, CL_GR11, color); /* background color */ | |
2884 | vga_wgfx(regbase, CL_GR12, color); /* foreground color */ | |
2885 | vga_wgfx(regbase, CL_GR13, color); /* background color */ | |
2886 | vga_wgfx(regbase, CL_GR14, 0); /* foreground color */ | |
2887 | vga_wgfx(regbase, CL_GR15, 0); /* background color */ | |
1da177e4 LT |
2888 | op = 0x50; |
2889 | op = 0xf0; | |
2890 | } | |
2891 | /* BLT mode: color expand, Enable 8x8 copy (faster?) */ | |
8503df65 | 2892 | vga_wgfx(regbase, CL_GR30, op); /* BLT mode */ |
1da177e4 LT |
2893 | |
2894 | /* BLT ROP: SrcCopy */ | |
8503df65 | 2895 | vga_wgfx(regbase, CL_GR32, 0x0d); /* BLT ROP */ |
1da177e4 LT |
2896 | |
2897 | /* and finally: GO! */ | |
8503df65 | 2898 | vga_wgfx(regbase, CL_GR31, 0x02); /* BLT Start/status */ |
1da177e4 | 2899 | |
8503df65 | 2900 | DPRINTK("EXIT\n"); |
1da177e4 LT |
2901 | } |
2902 | ||
1da177e4 LT |
2903 | /************************************************************************** |
2904 | * bestclock() - determine closest possible clock lower(?) than the | |
2905 | * desired pixel clock | |
2906 | **************************************************************************/ | |
dafa32c5 | 2907 | static void bestclock(long freq, int *nom, int *den, int *div) |
1da177e4 | 2908 | { |
dafa32c5 KH |
2909 | int n, d; |
2910 | long h, diff; | |
1da177e4 | 2911 | |
8503df65 KH |
2912 | assert(nom != NULL); |
2913 | assert(den != NULL); | |
2914 | assert(div != NULL); | |
1da177e4 LT |
2915 | |
2916 | *nom = 0; | |
2917 | *den = 0; | |
2918 | *div = 0; | |
2919 | ||
8503df65 | 2920 | DPRINTK("ENTER\n"); |
1da177e4 LT |
2921 | |
2922 | if (freq < 8000) | |
2923 | freq = 8000; | |
2924 | ||
dafa32c5 | 2925 | diff = freq; |
1da177e4 LT |
2926 | |
2927 | for (n = 32; n < 128; n++) { | |
7528f543 KH |
2928 | int s = 0; |
2929 | ||
dafa32c5 | 2930 | d = (14318 * n) / freq; |
1da177e4 | 2931 | if ((d >= 7) && (d <= 63)) { |
7528f543 KH |
2932 | int temp = d; |
2933 | ||
2934 | if (temp > 31) { | |
2935 | s = 1; | |
2936 | temp >>= 1; | |
2937 | } | |
2938 | h = ((14318 * n) / temp) >> s; | |
dafa32c5 KH |
2939 | h = h > freq ? h - freq : freq - h; |
2940 | if (h < diff) { | |
2941 | diff = h; | |
1da177e4 | 2942 | *nom = n; |
7528f543 KH |
2943 | *den = temp; |
2944 | *div = s; | |
1da177e4 LT |
2945 | } |
2946 | } | |
7528f543 | 2947 | d++; |
1da177e4 | 2948 | if ((d >= 7) && (d <= 63)) { |
7528f543 KH |
2949 | if (d > 31) { |
2950 | s = 1; | |
2951 | d >>= 1; | |
2952 | } | |
2953 | h = ((14318 * n) / d) >> s; | |
dafa32c5 KH |
2954 | h = h > freq ? h - freq : freq - h; |
2955 | if (h < diff) { | |
2956 | diff = h; | |
1da177e4 | 2957 | *nom = n; |
7528f543 KH |
2958 | *den = d; |
2959 | *div = s; | |
1da177e4 LT |
2960 | } |
2961 | } | |
2962 | } | |
2963 | ||
8503df65 | 2964 | DPRINTK("Best possible values for given frequency:\n"); |
dafa32c5 | 2965 | DPRINTK(" freq: %ld kHz nom: %d den: %d div: %d\n", |
8503df65 | 2966 | freq, *nom, *den, *div); |
1da177e4 | 2967 | |
8503df65 | 2968 | DPRINTK("EXIT\n"); |
1da177e4 LT |
2969 | } |
2970 | ||
1da177e4 LT |
2971 | /* ------------------------------------------------------------------------- |
2972 | * | |
2973 | * debugging functions | |
2974 | * | |
2975 | * ------------------------------------------------------------------------- | |
2976 | */ | |
2977 | ||
2978 | #ifdef CIRRUSFB_DEBUG | |
2979 | ||
2980 | /** | |
2981 | * cirrusfb_dbg_print_byte | |
2982 | * @name: name associated with byte value to be displayed | |
2983 | * @val: byte value to be displayed | |
2984 | * | |
2985 | * DESCRIPTION: | |
2986 | * Display an indented string, along with a hexidecimal byte value, and | |
2987 | * its decoded bits. Bits 7 through 0 are listed in left-to-right | |
2988 | * order. | |
2989 | */ | |
2990 | ||
2991 | static | |
8503df65 | 2992 | void cirrusfb_dbg_print_byte(const char *name, unsigned char val) |
1da177e4 | 2993 | { |
8503df65 KH |
2994 | DPRINTK("%8s = 0x%02X (bits 7-0: %c%c%c%c%c%c%c%c)\n", |
2995 | name, val, | |
2996 | val & 0x80 ? '1' : '0', | |
2997 | val & 0x40 ? '1' : '0', | |
2998 | val & 0x20 ? '1' : '0', | |
2999 | val & 0x10 ? '1' : '0', | |
3000 | val & 0x08 ? '1' : '0', | |
3001 | val & 0x04 ? '1' : '0', | |
3002 | val & 0x02 ? '1' : '0', | |
3003 | val & 0x01 ? '1' : '0'); | |
1da177e4 LT |
3004 | } |
3005 | ||
1da177e4 LT |
3006 | /** |
3007 | * cirrusfb_dbg_print_regs | |
3008 | * @base: If using newmmio, the newmmio base address, otherwise %NULL | |
3009 | * @reg_class: type of registers to read: %CRT, or %SEQ | |
3010 | * | |
3011 | * DESCRIPTION: | |
3012 | * Dumps the given list of VGA CRTC registers. If @base is %NULL, | |
3013 | * old-style I/O ports are queried for information, otherwise MMIO is | |
3014 | * used at the given @base address to query the information. | |
3015 | */ | |
3016 | ||
3017 | static | |
8503df65 | 3018 | void cirrusfb_dbg_print_regs(caddr_t regbase, |
7345de32 | 3019 | enum cirrusfb_dbg_reg_class reg_class, ...) |
1da177e4 LT |
3020 | { |
3021 | va_list list; | |
3022 | unsigned char val = 0; | |
3023 | unsigned reg; | |
3024 | char *name; | |
3025 | ||
8503df65 | 3026 | va_start(list, reg_class); |
1da177e4 | 3027 | |
8503df65 | 3028 | name = va_arg(list, char *); |
1da177e4 | 3029 | while (name != NULL) { |
8503df65 | 3030 | reg = va_arg(list, int); |
1da177e4 LT |
3031 | |
3032 | switch (reg_class) { | |
3033 | case CRT: | |
8503df65 | 3034 | val = vga_rcrt(regbase, (unsigned char) reg); |
1da177e4 LT |
3035 | break; |
3036 | case SEQ: | |
8503df65 | 3037 | val = vga_rseq(regbase, (unsigned char) reg); |
1da177e4 LT |
3038 | break; |
3039 | default: | |
3040 | /* should never occur */ | |
c930faae | 3041 | assert(false); |
1da177e4 LT |
3042 | break; |
3043 | } | |
3044 | ||
8503df65 | 3045 | cirrusfb_dbg_print_byte(name, val); |
1da177e4 | 3046 | |
8503df65 | 3047 | name = va_arg(list, char *); |
1da177e4 LT |
3048 | } |
3049 | ||
8503df65 | 3050 | va_end(list); |
1da177e4 LT |
3051 | } |
3052 | ||
1da177e4 LT |
3053 | /** |
3054 | * cirrusfb_dump | |
3055 | * @cirrusfbinfo: | |
3056 | * | |
3057 | * DESCRIPTION: | |
3058 | */ | |
3059 | ||
8503df65 | 3060 | static void cirrusfb_dump(void) |
1da177e4 | 3061 | { |
8503df65 | 3062 | cirrusfb_dbg_reg_dump(NULL); |
1da177e4 LT |
3063 | } |
3064 | ||
1da177e4 LT |
3065 | /** |
3066 | * cirrusfb_dbg_reg_dump | |
3067 | * @base: If using newmmio, the newmmio base address, otherwise %NULL | |
3068 | * | |
3069 | * DESCRIPTION: | |
3070 | * Dumps a list of interesting VGA and CIRRUSFB registers. If @base is %NULL, | |
3071 | * old-style I/O ports are queried for information, otherwise MMIO is | |
3072 | * used at the given @base address to query the information. | |
3073 | */ | |
3074 | ||
3075 | static | |
8503df65 | 3076 | void cirrusfb_dbg_reg_dump(caddr_t regbase) |
1da177e4 | 3077 | { |
8503df65 | 3078 | DPRINTK("CIRRUSFB VGA CRTC register dump:\n"); |
1da177e4 | 3079 | |
8503df65 | 3080 | cirrusfb_dbg_print_regs(regbase, CRT, |
1da177e4 LT |
3081 | "CR00", 0x00, |
3082 | "CR01", 0x01, | |
3083 | "CR02", 0x02, | |
3084 | "CR03", 0x03, | |
3085 | "CR04", 0x04, | |
3086 | "CR05", 0x05, | |
3087 | "CR06", 0x06, | |
3088 | "CR07", 0x07, | |
3089 | "CR08", 0x08, | |
3090 | "CR09", 0x09, | |
3091 | "CR0A", 0x0A, | |
3092 | "CR0B", 0x0B, | |
3093 | "CR0C", 0x0C, | |
3094 | "CR0D", 0x0D, | |
3095 | "CR0E", 0x0E, | |
3096 | "CR0F", 0x0F, | |
3097 | "CR10", 0x10, | |
3098 | "CR11", 0x11, | |
3099 | "CR12", 0x12, | |
3100 | "CR13", 0x13, | |
3101 | "CR14", 0x14, | |
3102 | "CR15", 0x15, | |
3103 | "CR16", 0x16, | |
3104 | "CR17", 0x17, | |
3105 | "CR18", 0x18, | |
3106 | "CR22", 0x22, | |
3107 | "CR24", 0x24, | |
3108 | "CR26", 0x26, | |
3109 | "CR2D", 0x2D, | |
3110 | "CR2E", 0x2E, | |
3111 | "CR2F", 0x2F, | |
3112 | "CR30", 0x30, | |
3113 | "CR31", 0x31, | |
3114 | "CR32", 0x32, | |
3115 | "CR33", 0x33, | |
3116 | "CR34", 0x34, | |
3117 | "CR35", 0x35, | |
3118 | "CR36", 0x36, | |
3119 | "CR37", 0x37, | |
3120 | "CR38", 0x38, | |
3121 | "CR39", 0x39, | |
3122 | "CR3A", 0x3A, | |
3123 | "CR3B", 0x3B, | |
3124 | "CR3C", 0x3C, | |
3125 | "CR3D", 0x3D, | |
3126 | "CR3E", 0x3E, | |
3127 | "CR3F", 0x3F, | |
3128 | NULL); | |
3129 | ||
8503df65 | 3130 | DPRINTK("\n"); |
1da177e4 | 3131 | |
8503df65 | 3132 | DPRINTK("CIRRUSFB VGA SEQ register dump:\n"); |
1da177e4 | 3133 | |
8503df65 | 3134 | cirrusfb_dbg_print_regs(regbase, SEQ, |
1da177e4 LT |
3135 | "SR00", 0x00, |
3136 | "SR01", 0x01, | |
3137 | "SR02", 0x02, | |
3138 | "SR03", 0x03, | |
3139 | "SR04", 0x04, | |
3140 | "SR08", 0x08, | |
3141 | "SR09", 0x09, | |
3142 | "SR0A", 0x0A, | |
3143 | "SR0B", 0x0B, | |
3144 | "SR0D", 0x0D, | |
3145 | "SR10", 0x10, | |
3146 | "SR11", 0x11, | |
3147 | "SR12", 0x12, | |
3148 | "SR13", 0x13, | |
3149 | "SR14", 0x14, | |
3150 | "SR15", 0x15, | |
3151 | "SR16", 0x16, | |
3152 | "SR17", 0x17, | |
3153 | "SR18", 0x18, | |
3154 | "SR19", 0x19, | |
3155 | "SR1A", 0x1A, | |
3156 | "SR1B", 0x1B, | |
3157 | "SR1C", 0x1C, | |
3158 | "SR1D", 0x1D, | |
3159 | "SR1E", 0x1E, | |
3160 | "SR1F", 0x1F, | |
3161 | NULL); | |
3162 | ||
8503df65 | 3163 | DPRINTK("\n"); |
1da177e4 LT |
3164 | } |
3165 | ||
3166 | #endif /* CIRRUSFB_DEBUG */ | |
3167 |