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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / video / amifb.c
blob4c9ec3f58c52e35c194d98cfebcd830075be6c61
1 /*
2 * linux/drivers/video/amifb.c -- Amiga builtin chipset frame buffer device
3 *
4 * Copyright (C) 1995-2003 Geert Uytterhoeven
5 *
6 * with work by Roman Zippel
7 *
8 *
9 * This file is based on the Atari frame buffer device (atafb.c):
10 *
11 * Copyright (C) 1994 Martin Schaller
12 * Roman Hodek
13 *
14 * with work by Andreas Schwab
15 * Guenther Kelleter
16 *
17 * and on the original Amiga console driver (amicon.c):
18 *
19 * Copyright (C) 1993 Hamish Macdonald
20 * Greg Harp
21 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
22 *
23 * with work by William Rucklidge (wjr@cs.cornell.edu)
24 * Geert Uytterhoeven
25 * Jes Sorensen (jds@kom.auc.dk)
26 *
27 *
28 * History:
29 *
30 * - 24 Jul 96: Copper generates now vblank interrupt and
31 * VESA Power Saving Protocol is fully implemented
32 * - 14 Jul 96: Rework and hopefully last ECS bugs fixed
33 * - 7 Mar 96: Hardware sprite support by Roman Zippel
34 * - 18 Feb 96: OCS and ECS support by Roman Zippel
35 * Hardware functions completely rewritten
36 * - 2 Dec 95: AGA version by Geert Uytterhoeven
37 *
38 * This file is subject to the terms and conditions of the GNU General Public
39 * License. See the file COPYING in the main directory of this archive
40 * for more details.
41 */
42
43 #include <linux/module.h>
44 #include <linux/kernel.h>
45 #include <linux/errno.h>
46 #include <linux/string.h>
47 #include <linux/mm.h>
48 #include <linux/slab.h>
49 #include <linux/delay.h>
50 #include <linux/interrupt.h>
51 #include <linux/fb.h>
52 #include <linux/init.h>
53 #include <linux/ioport.h>
54
55 #include <linux/uaccess.h>
56 #include <asm/system.h>
57 #include <asm/irq.h>
58 #include <asm/amigahw.h>
59 #include <asm/amigaints.h>
60 #include <asm/setup.h>
61
62 #include "c2p.h"
63
64
65 #define DEBUG
66
67 #if !defined(CONFIG_FB_AMIGA_OCS) && !defined(CONFIG_FB_AMIGA_ECS) && !defined(CONFIG_FB_AMIGA_AGA)
68 #define CONFIG_FB_AMIGA_OCS /* define at least one fb driver, this will change later */
69 #endif
70
71 #if !defined(CONFIG_FB_AMIGA_OCS)
72 # define IS_OCS (0)
73 #elif defined(CONFIG_FB_AMIGA_ECS) || defined(CONFIG_FB_AMIGA_AGA)
74 # define IS_OCS (chipset == TAG_OCS)
75 #else
76 # define CONFIG_FB_AMIGA_OCS_ONLY
77 # define IS_OCS (1)
78 #endif
79
80 #if !defined(CONFIG_FB_AMIGA_ECS)
81 # define IS_ECS (0)
82 #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_AGA)
83 # define IS_ECS (chipset == TAG_ECS)
84 #else
85 # define CONFIG_FB_AMIGA_ECS_ONLY
86 # define IS_ECS (1)
87 #endif
88
89 #if !defined(CONFIG_FB_AMIGA_AGA)
90 # define IS_AGA (0)
91 #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_ECS)
92 # define IS_AGA (chipset == TAG_AGA)
93 #else
94 # define CONFIG_FB_AMIGA_AGA_ONLY
95 # define IS_AGA (1)
96 #endif
97
98 #ifdef DEBUG
99 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
100 #else
101 # define DPRINTK(fmt, args...)
102 #endif
103
104 /*******************************************************************************
105
106
107 Generic video timings
108 ---------------------
109
110 Timings used by the frame buffer interface:
111
112 +----------+---------------------------------------------+----------+-------+
113 | | ^ | | |
114 | | |upper_margin | | |
115 | | v | | |
116 +----------###############################################----------+-------+
117 | # ^ # | |
118 | # | # | |
119 | # | # | |
120 | # | # | |
121 | left # | # right | hsync |
122 | margin # | xres # margin | len |
123 |<-------->#<---------------+--------------------------->#<-------->|<----->|
124 | # | # | |
125 | # | # | |
126 | # | # | |
127 | # |yres # | |
128 | # | # | |
129 | # | # | |
130 | # | # | |
131 | # | # | |
132 | # | # | |
133 | # | # | |
134 | # | # | |
135 | # | # | |
136 | # v # | |
137 +----------###############################################----------+-------+
138 | | ^ | | |
139 | | |lower_margin | | |
140 | | v | | |
141 +----------+---------------------------------------------+----------+-------+
142 | | ^ | | |
143 | | |vsync_len | | |
144 | | v | | |
145 +----------+---------------------------------------------+----------+-------+
146
147
148 Amiga video timings
149 -------------------
150
151 The Amiga native chipsets uses another timing scheme:
152
153 - hsstrt: Start of horizontal synchronization pulse
154 - hsstop: End of horizontal synchronization pulse
155 - htotal: Last value on the line (i.e. line length = htotal+1)
156 - vsstrt: Start of vertical synchronization pulse
157 - vsstop: End of vertical synchronization pulse
158 - vtotal: Last line value (i.e. number of lines = vtotal+1)
159 - hcenter: Start of vertical retrace for interlace
160
161 You can specify the blanking timings independently. Currently I just set
162 them equal to the respective synchronization values:
163
164 - hbstrt: Start of horizontal blank
165 - hbstop: End of horizontal blank
166 - vbstrt: Start of vertical blank
167 - vbstop: End of vertical blank
168
169 Horizontal values are in color clock cycles (280 ns), vertical values are in
170 scanlines.
171
172 (0, 0) is somewhere in the upper-left corner :-)
173
174
175 Amiga visible window definitions
176 --------------------------------
177
178 Currently I only have values for AGA, SHRES (28 MHz dotclock). Feel free to
179 make corrections and/or additions.
180
181 Within the above synchronization specifications, the visible window is
182 defined by the following parameters (actual register resolutions may be
183 different; all horizontal values are normalized with respect to the pixel
184 clock):
185
186 - diwstrt_h: Horizontal start of the visible window
187 - diwstop_h: Horizontal stop+1(*) of the visible window
188 - diwstrt_v: Vertical start of the visible window
189 - diwstop_v: Vertical stop of the visible window
190 - ddfstrt: Horizontal start of display DMA
191 - ddfstop: Horizontal stop of display DMA
192 - hscroll: Horizontal display output delay
193
194 Sprite positioning:
195
196 - sprstrt_h: Horizontal start-4 of sprite
197 - sprstrt_v: Vertical start of sprite
198
199 (*) Even Commodore did it wrong in the AGA monitor drivers by not adding 1.
200
201 Horizontal values are in dotclock cycles (35 ns), vertical values are in
202 scanlines.
203
204 (0, 0) is somewhere in the upper-left corner :-)
205
206
207 Dependencies (AGA, SHRES (35 ns dotclock))
208 -------------------------------------------
209
210 Since there are much more parameters for the Amiga display than for the
211 frame buffer interface, there must be some dependencies among the Amiga
212 display parameters. Here's what I found out:
213
214 - ddfstrt and ddfstop are best aligned to 64 pixels.
215 - the chipset needs 64+4 horizontal pixels after the DMA start before the
216 first pixel is output, so diwstrt_h = ddfstrt+64+4 if you want to
217 display the first pixel on the line too. Increase diwstrt_h for virtual
218 screen panning.
219 - the display DMA always fetches 64 pixels at a time (fmode = 3).
220 - ddfstop is ddfstrt+#pixels-64.
221 - diwstop_h = diwstrt_h+xres+1. Because of the additional 1 this can be 1
222 more than htotal.
223 - hscroll simply adds a delay to the display output. Smooth horizontal
224 panning needs an extra 64 pixels on the left to prefetch the pixels that
225 `fall off' on the left.
226 - if ddfstrt < 192, the sprite DMA cycles are all stolen by the bitplane
227 DMA, so it's best to make the DMA start as late as possible.
228 - you really don't want to make ddfstrt < 128, since this will steal DMA
229 cycles from the other DMA channels (audio, floppy and Chip RAM refresh).
230 - I make diwstop_h and diwstop_v as large as possible.
231
232 General dependencies
233 --------------------
234
235 - all values are SHRES pixel (35ns)
236
237 table 1:fetchstart table 2:prefetch table 3:fetchsize
238 ------------------ ---------------- -----------------
239 Pixclock # SHRES|HIRES|LORES # SHRES|HIRES|LORES # SHRES|HIRES|LORES
240 -------------#------+-----+------#------+-----+------#------+-----+------
241 Bus width 1x # 16 | 32 | 64 # 16 | 32 | 64 # 64 | 64 | 64
242 Bus width 2x # 32 | 64 | 128 # 32 | 64 | 64 # 64 | 64 | 128
243 Bus width 4x # 64 | 128 | 256 # 64 | 64 | 64 # 64 | 128 | 256
244
245 - chipset needs 4 pixels before the first pixel is output
246 - ddfstrt must be aligned to fetchstart (table 1)
247 - chipset needs also prefetch (table 2) to get first pixel data, so
248 ddfstrt = ((diwstrt_h-4) & -fetchstart) - prefetch
249 - for horizontal panning decrease diwstrt_h
250 - the length of a fetchline must be aligned to fetchsize (table 3)
251 - if fetchstart is smaller than fetchsize, then ddfstrt can a little bit
252 moved to optimize use of dma (useful for OCS/ECS overscan displays)
253 - ddfstop is ddfstrt+ddfsize-fetchsize
254 - If C= didn't change anything for AGA, then at following positions the
255 dma bus is already used:
256 ddfstrt < 48 -> memory refresh
257 < 96 -> disk dma
258 < 160 -> audio dma
259 < 192 -> sprite 0 dma
260 < 416 -> sprite dma (32 per sprite)
261 - in accordance with the hardware reference manual a hardware stop is at
262 192, but AGA (ECS?) can go below this.
263
264 DMA priorities
265 --------------
266
267 Since there are limits on the earliest start value for display DMA and the
268 display of sprites, I use the following policy on horizontal panning and
269 the hardware cursor:
270
271 - if you want to start display DMA too early, you lose the ability to
272 do smooth horizontal panning (xpanstep 1 -> 64).
273 - if you want to go even further, you lose the hardware cursor too.
274
275 IMHO a hardware cursor is more important for X than horizontal scrolling,
276 so that's my motivation.
277
278
279 Implementation
280 --------------
281
282 ami_decode_var() converts the frame buffer values to the Amiga values. It's
283 just a `straightforward' implementation of the above rules.
284
285
286 Standard VGA timings
287 --------------------
288
289 xres yres left right upper lower hsync vsync
290 ---- ---- ---- ----- ----- ----- ----- -----
291 80x25 720 400 27 45 35 12 108 2
292 80x30 720 480 27 45 30 9 108 2
293
294 These were taken from a XFree86 configuration file, recalculated for a 28 MHz
295 dotclock (Amigas don't have a 25 MHz dotclock) and converted to frame buffer
296 generic timings.
297
298 As a comparison, graphics/monitor.h suggests the following:
299
300 xres yres left right upper lower hsync vsync
301 ---- ---- ---- ----- ----- ----- ----- -----
302
303 VGA 640 480 52 112 24 19 112 - 2 +
304 VGA70 640 400 52 112 27 21 112 - 2 -
305
306
307 Sync polarities
308 ---------------
309
310 VSYNC HSYNC Vertical size Vertical total
311 ----- ----- ------------- --------------
312 + + Reserved Reserved
313 + - 400 414
314 - + 350 362
315 - - 480 496
316
317 Source: CL-GD542X Technical Reference Manual, Cirrus Logic, Oct 1992
318
319
320 Broadcast video timings
321 -----------------------
322
323 According to the CCIR and RETMA specifications, we have the following values:
324
325 CCIR -> PAL
326 -----------
327
328 - a scanline is 64 µs long, of which 52.48 µs are visible. This is about
329 736 visible 70 ns pixels per line.
330 - we have 625 scanlines, of which 575 are visible (interlaced); after
331 rounding this becomes 576.
332
333 RETMA -> NTSC
334 -------------
335
336 - a scanline is 63.5 µs long, of which 53.5 µs are visible. This is about
337 736 visible 70 ns pixels per line.
338 - we have 525 scanlines, of which 485 are visible (interlaced); after
339 rounding this becomes 484.
340
341 Thus if you want a PAL compatible display, you have to do the following:
342
343 - set the FB_SYNC_BROADCAST flag to indicate that standard broadcast
344 timings are to be used.
345 - make sure upper_margin+yres+lower_margin+vsync_len = 625 for an
346 interlaced, 312 for a non-interlaced and 156 for a doublescanned
347 display.
348 - make sure left_margin+xres+right_margin+hsync_len = 1816 for a SHRES,
349 908 for a HIRES and 454 for a LORES display.
350 - the left visible part begins at 360 (SHRES; HIRES:180, LORES:90),
351 left_margin+2*hsync_len must be greater or equal.
352 - the upper visible part begins at 48 (interlaced; non-interlaced:24,
353 doublescanned:12), upper_margin+2*vsync_len must be greater or equal.
354 - ami_encode_var() calculates margins with a hsync of 5320 ns and a vsync
355 of 4 scanlines
356
357 The settings for a NTSC compatible display are straightforward.
358
359 Note that in a strict sense the PAL and NTSC standards only define the
360 encoding of the color part (chrominance) of the video signal and don't say
361 anything about horizontal/vertical synchronization nor refresh rates.
362
363
364 -- Geert --
365
366 *******************************************************************************/
367
368
369 /*
370 * Custom Chipset Definitions
371 */
372
373 #define CUSTOM_OFS(fld) ((long)&((struct CUSTOM*)0)->fld)
374
375 /*
376 * BPLCON0 -- Bitplane Control Register 0
377 */
378
379 #define BPC0_HIRES (0x8000)
380 #define BPC0_BPU2 (0x4000) /* Bit plane used count */
381 #define BPC0_BPU1 (0x2000)
382 #define BPC0_BPU0 (0x1000)
383 #define BPC0_HAM (0x0800) /* HAM mode */
384 #define BPC0_DPF (0x0400) /* Double playfield */
385 #define BPC0_COLOR (0x0200) /* Enable colorburst */
386 #define BPC0_GAUD (0x0100) /* Genlock audio enable */
387 #define BPC0_UHRES (0x0080) /* Ultrahi res enable */
388 #define BPC0_SHRES (0x0040) /* Super hi res mode */
389 #define BPC0_BYPASS (0x0020) /* Bypass LUT - AGA */
390 #define BPC0_BPU3 (0x0010) /* AGA */
391 #define BPC0_LPEN (0x0008) /* Light pen enable */
392 #define BPC0_LACE (0x0004) /* Interlace */
393 #define BPC0_ERSY (0x0002) /* External resync */
394 #define BPC0_ECSENA (0x0001) /* ECS enable */
395
396 /*
397 * BPLCON2 -- Bitplane Control Register 2
398 */
399
400 #define BPC2_ZDBPSEL2 (0x4000) /* Bitplane to be used for ZD - AGA */
401 #define BPC2_ZDBPSEL1 (0x2000)
402 #define BPC2_ZDBPSEL0 (0x1000)
403 #define BPC2_ZDBPEN (0x0800) /* Enable ZD with ZDBPSELx - AGA */
404 #define BPC2_ZDCTEN (0x0400) /* Enable ZD with palette bit #31 - AGA */
405 #define BPC2_KILLEHB (0x0200) /* Kill EHB mode - AGA */
406 #define BPC2_RDRAM (0x0100) /* Color table accesses read, not write - AGA */
407 #define BPC2_SOGEN (0x0080) /* SOG output pin high - AGA */
408 #define BPC2_PF2PRI (0x0040) /* PF2 priority over PF1 */
409 #define BPC2_PF2P2 (0x0020) /* PF2 priority wrt sprites */
410 #define BPC2_PF2P1 (0x0010)
411 #define BPC2_PF2P0 (0x0008)
412 #define BPC2_PF1P2 (0x0004) /* ditto PF1 */
413 #define BPC2_PF1P1 (0x0002)
414 #define BPC2_PF1P0 (0x0001)
415
416 /*
417 * BPLCON3 -- Bitplane Control Register 3 (AGA)
418 */
419
420 #define BPC3_BANK2 (0x8000) /* Bits to select color register bank */
421 #define BPC3_BANK1 (0x4000)
422 #define BPC3_BANK0 (0x2000)
423 #define BPC3_PF2OF2 (0x1000) /* Bits for color table offset when PF2 */
424 #define BPC3_PF2OF1 (0x0800)
425 #define BPC3_PF2OF0 (0x0400)
426 #define BPC3_LOCT (0x0200) /* Color register writes go to low bits */
427 #define BPC3_SPRES1 (0x0080) /* Sprite resolution bits */
428 #define BPC3_SPRES0 (0x0040)
429 #define BPC3_BRDRBLNK (0x0020) /* Border blanked? */
430 #define BPC3_BRDRTRAN (0x0010) /* Border transparent? */
431 #define BPC3_ZDCLKEN (0x0004) /* ZD pin is 14 MHz (HIRES) clock output */
432 #define BPC3_BRDRSPRT (0x0002) /* Sprites in border? */
433 #define BPC3_EXTBLKEN (0x0001) /* BLANK programmable */
434
435 /*
436 * BPLCON4 -- Bitplane Control Register 4 (AGA)
437 */
438
439 #define BPC4_BPLAM7 (0x8000) /* bitplane color XOR field */
440 #define BPC4_BPLAM6 (0x4000)
441 #define BPC4_BPLAM5 (0x2000)
442 #define BPC4_BPLAM4 (0x1000)
443 #define BPC4_BPLAM3 (0x0800)
444 #define BPC4_BPLAM2 (0x0400)
445 #define BPC4_BPLAM1 (0x0200)
446 #define BPC4_BPLAM0 (0x0100)
447 #define BPC4_ESPRM7 (0x0080) /* 4 high bits for even sprite colors */
448 #define BPC4_ESPRM6 (0x0040)
449 #define BPC4_ESPRM5 (0x0020)
450 #define BPC4_ESPRM4 (0x0010)
451 #define BPC4_OSPRM7 (0x0008) /* 4 high bits for odd sprite colors */
452 #define BPC4_OSPRM6 (0x0004)
453 #define BPC4_OSPRM5 (0x0002)
454 #define BPC4_OSPRM4 (0x0001)
455
456 /*
457 * BEAMCON0 -- Beam Control Register
458 */
459
460 #define BMC0_HARDDIS (0x4000) /* Disable hardware limits */
461 #define BMC0_LPENDIS (0x2000) /* Disable light pen latch */
462 #define BMC0_VARVBEN (0x1000) /* Enable variable vertical blank */
463 #define BMC0_LOLDIS (0x0800) /* Disable long/short line toggle */
464 #define BMC0_CSCBEN (0x0400) /* Composite sync/blank */
465 #define BMC0_VARVSYEN (0x0200) /* Enable variable vertical sync */
466 #define BMC0_VARHSYEN (0x0100) /* Enable variable horizontal sync */
467 #define BMC0_VARBEAMEN (0x0080) /* Enable variable beam counters */
468 #define BMC0_DUAL (0x0040) /* Enable alternate horizontal beam counter */
469 #define BMC0_PAL (0x0020) /* Set decodes for PAL */
470 #define BMC0_VARCSYEN (0x0010) /* Enable variable composite sync */
471 #define BMC0_BLANKEN (0x0008) /* Blank enable (no longer used on AGA) */
472 #define BMC0_CSYTRUE (0x0004) /* CSY polarity */
473 #define BMC0_VSYTRUE (0x0002) /* VSY polarity */
474 #define BMC0_HSYTRUE (0x0001) /* HSY polarity */
475
476
477 /*
478 * FMODE -- Fetch Mode Control Register (AGA)
479 */
480
481 #define FMODE_SSCAN2 (0x8000) /* Sprite scan-doubling */
482 #define FMODE_BSCAN2 (0x4000) /* Use PF2 modulus every other line */
483 #define FMODE_SPAGEM (0x0008) /* Sprite page mode */
484 #define FMODE_SPR32 (0x0004) /* Sprite 32 bit fetch */
485 #define FMODE_BPAGEM (0x0002) /* Bitplane page mode */
486 #define FMODE_BPL32 (0x0001) /* Bitplane 32 bit fetch */
487
488 /*
489 * Tags used to indicate a specific Pixel Clock
490 *
491 * clk_shift is the shift value to get the timings in 35 ns units
492 */
493
494 enum { TAG_SHRES, TAG_HIRES, TAG_LORES };
495
496 /*
497 * Tags used to indicate the specific chipset
498 */
499
500 enum { TAG_OCS, TAG_ECS, TAG_AGA };
501
502 /*
503 * Tags used to indicate the memory bandwidth
504 */
505
506 enum { TAG_FMODE_1, TAG_FMODE_2, TAG_FMODE_4 };
507
508
509 /*
510 * Clock Definitions, Maximum Display Depth
511 *
512 * These depend on the E-Clock or the Chipset, so they are filled in
513 * dynamically
514 */
515
516 static u_long pixclock[3]; /* SHRES/HIRES/LORES: index = clk_shift */
517 static u_short maxdepth[3]; /* SHRES/HIRES/LORES: index = clk_shift */
518 static u_short maxfmode, chipset;
519
520
521 /*
522 * Broadcast Video Timings
523 *
524 * Horizontal values are in 35 ns (SHRES) units
525 * Vertical values are in interlaced scanlines
526 */
527
528 #define PAL_DIWSTRT_H (360) /* PAL Window Limits */
529 #define PAL_DIWSTRT_V (48)
530 #define PAL_HTOTAL (1816)
531 #define PAL_VTOTAL (625)
532
533 #define NTSC_DIWSTRT_H (360) /* NTSC Window Limits */
534 #define NTSC_DIWSTRT_V (40)
535 #define NTSC_HTOTAL (1816)
536 #define NTSC_VTOTAL (525)
537
538
539 /*
540 * Various macros
541 */
542
543 #define up2(v) (((v)+1) & -2)
544 #define down2(v) ((v) & -2)
545 #define div2(v) ((v)>>1)
546 #define mod2(v) ((v) & 1)
547
548 #define up4(v) (((v)+3) & -4)
549 #define down4(v) ((v) & -4)
550 #define mul4(v) ((v)<<2)
551 #define div4(v) ((v)>>2)
552 #define mod4(v) ((v) & 3)
553
554 #define up8(v) (((v)+7) & -8)
555 #define down8(v) ((v) & -8)
556 #define div8(v) ((v)>>3)
557 #define mod8(v) ((v) & 7)
558
559 #define up16(v) (((v)+15) & -16)
560 #define down16(v) ((v) & -16)
561 #define div16(v) ((v)>>4)
562 #define mod16(v) ((v) & 15)
563
564 #define up32(v) (((v)+31) & -32)
565 #define down32(v) ((v) & -32)
566 #define div32(v) ((v)>>5)
567 #define mod32(v) ((v) & 31)
568
569 #define up64(v) (((v)+63) & -64)
570 #define down64(v) ((v) & -64)
571 #define div64(v) ((v)>>6)
572 #define mod64(v) ((v) & 63)
573
574 #define upx(x,v) (((v)+(x)-1) & -(x))
575 #define downx(x,v) ((v) & -(x))
576 #define modx(x,v) ((v) & ((x)-1))
577
578 /* if x1 is not a constant, this macro won't make real sense :-) */
579 #ifdef __mc68000__
580 #define DIVUL(x1, x2) ({int res; asm("divul %1,%2,%3": "=d" (res): \
581 "d" (x2), "d" ((long)((x1)/0x100000000ULL)), "0" ((long)(x1))); res;})
582 #else
583 /* We know a bit about the numbers, so we can do it this way */
584 #define DIVUL(x1, x2) ((((long)((unsigned long long)x1 >> 8) / x2) << 8) + \
585 ((((long)((unsigned long long)x1 >> 8) % x2) << 8) / x2))
586 #endif
587
588 #define highw(x) ((u_long)(x)>>16 & 0xffff)
589 #define loww(x) ((u_long)(x) & 0xffff)
590
591 #define custom amiga_custom
592
593 #define VBlankOn() custom.intena = IF_SETCLR|IF_COPER
594 #define VBlankOff() custom.intena = IF_COPER
595
596
597 /*
598 * Chip RAM we reserve for the Frame Buffer
599 *
600 * This defines the Maximum Virtual Screen Size
601 * (Setable per kernel options?)
602 */
603
604 #define VIDEOMEMSIZE_AGA_2M (1310720) /* AGA (2MB) : max 1280*1024*256 */
605 #define VIDEOMEMSIZE_AGA_1M (786432) /* AGA (1MB) : max 1024*768*256 */
606 #define VIDEOMEMSIZE_ECS_2M (655360) /* ECS (2MB) : max 1280*1024*16 */
607 #define VIDEOMEMSIZE_ECS_1M (393216) /* ECS (1MB) : max 1024*768*16 */
608 #define VIDEOMEMSIZE_OCS (262144) /* OCS : max ca. 800*600*16 */
609
610 #define SPRITEMEMSIZE (64*64/4) /* max 64*64*4 */
611 #define DUMMYSPRITEMEMSIZE (8)
612 static u_long spritememory;
613
614 #define CHIPRAM_SAFETY_LIMIT (16384)
615
616 static u_long videomemory;
617
618 /*
619 * This is the earliest allowed start of fetching display data.
620 * Only if you really want no hardware cursor and audio,
621 * set this to 128, but let it better at 192
622 */
623
624 static u_long min_fstrt = 192;
625
626 #define assignchunk(name, type, ptr, size) \
627 { \
628 (name) = (type)(ptr); \
629 ptr += size; \
630 }
631
632
633 /*
634 * Copper Instructions
635 */
636
637 #define CMOVE(val, reg) (CUSTOM_OFS(reg)<<16 | (val))
638 #define CMOVE2(val, reg) ((CUSTOM_OFS(reg)+2)<<16 | (val))
639 #define CWAIT(x, y) (((y) & 0x1fe)<<23 | ((x) & 0x7f0)<<13 | 0x0001fffe)
640 #define CEND (0xfffffffe)
641
642
643 typedef union {
644 u_long l;
645 u_short w[2];
646 } copins;
647
648 static struct copdisplay {
649 copins *init;
650 copins *wait;
651 copins *list[2][2];
652 copins *rebuild[2];
653 } copdisplay;
654
655 static u_short currentcop = 0;
656
657 /*
658 * Hardware Cursor API Definitions
659 * These used to be in linux/fb.h, but were preliminary and used by
660 * amifb only anyway
661 */
662
663 #define FBIOGET_FCURSORINFO 0x4607
664 #define FBIOGET_VCURSORINFO 0x4608
665 #define FBIOPUT_VCURSORINFO 0x4609
666 #define FBIOGET_CURSORSTATE 0x460A
667 #define FBIOPUT_CURSORSTATE 0x460B
668
669
670 struct fb_fix_cursorinfo {
671 __u16 crsr_width; /* width and height of the cursor in */
672 __u16 crsr_height; /* pixels (zero if no cursor) */
673 __u16 crsr_xsize; /* cursor size in display pixels */
674 __u16 crsr_ysize;
675 __u16 crsr_color1; /* colormap entry for cursor color1 */
676 __u16 crsr_color2; /* colormap entry for cursor color2 */
677 };
678
679 struct fb_var_cursorinfo {
680 __u16 width;
681 __u16 height;
682 __u16 xspot;
683 __u16 yspot;
684 __u8 data[1]; /* field with [height][width] */
685 };
686
687 struct fb_cursorstate {
688 __s16 xoffset;
689 __s16 yoffset;
690 __u16 mode;
691 };
692
693 #define FB_CURSOR_OFF 0
694 #define FB_CURSOR_ON 1
695 #define FB_CURSOR_FLASH 2
696
697
698 /*
699 * Hardware Cursor
700 */
701
702 static int cursorrate = 20; /* Number of frames/flash toggle */
703 static u_short cursorstate = -1;
704 static u_short cursormode = FB_CURSOR_OFF;
705
706 static u_short *lofsprite, *shfsprite, *dummysprite;
707
708 /*
709 * Current Video Mode
710 */
711
712 static struct amifb_par {
713
714 /* General Values */
715
716 int xres; /* vmode */
717 int yres; /* vmode */
718 int vxres; /* vmode */
719 int vyres; /* vmode */
720 int xoffset; /* vmode */
721 int yoffset; /* vmode */
722 u_short bpp; /* vmode */
723 u_short clk_shift; /* vmode */
724 u_short line_shift; /* vmode */
725 int vmode; /* vmode */
726 u_short diwstrt_h; /* vmode */
727 u_short diwstop_h; /* vmode */
728 u_short diwstrt_v; /* vmode */
729 u_short diwstop_v; /* vmode */
730 u_long next_line; /* modulo for next line */
731 u_long next_plane; /* modulo for next plane */
732
733 /* Cursor Values */
734
735 struct {
736 short crsr_x; /* movecursor */
737 short crsr_y; /* movecursor */
738 short spot_x;
739 short spot_y;
740 u_short height;
741 u_short width;
742 u_short fmode;
743 } crsr;
744
745 /* OCS Hardware Registers */
746
747 u_long bplpt0; /* vmode, pan (Note: physical address) */
748 u_long bplpt0wrap; /* vmode, pan (Note: physical address) */
749 u_short ddfstrt;
750 u_short ddfstop;
751 u_short bpl1mod;
752 u_short bpl2mod;
753 u_short bplcon0; /* vmode */
754 u_short bplcon1; /* vmode */
755 u_short htotal; /* vmode */
756 u_short vtotal; /* vmode */
757
758 /* Additional ECS Hardware Registers */
759
760 u_short bplcon3; /* vmode */
761 u_short beamcon0; /* vmode */
762 u_short hsstrt; /* vmode */
763 u_short hsstop; /* vmode */
764 u_short hbstrt; /* vmode */
765 u_short hbstop; /* vmode */
766 u_short vsstrt; /* vmode */
767 u_short vsstop; /* vmode */
768 u_short vbstrt; /* vmode */
769 u_short vbstop; /* vmode */
770 u_short hcenter; /* vmode */
771
772 /* Additional AGA Hardware Registers */
773
774 u_short fmode; /* vmode */
775 } currentpar;
776
777
778 static struct fb_info fb_info = {
779 .fix = {
780 .id = "Amiga ",
781 .visual = FB_VISUAL_PSEUDOCOLOR,
782 .accel = FB_ACCEL_AMIGABLITT
783 }
784 };
785
786
787 /*
788 * Saved color entry 0 so we can restore it when unblanking
789 */
790
791 static u_char red0, green0, blue0;
792
793
794 #if defined(CONFIG_FB_AMIGA_ECS)
795 static u_short ecs_palette[32];
796 #endif
797
798
799 /*
800 * Latches for Display Changes during VBlank
801 */
802
803 static u_short do_vmode_full = 0; /* Change the Video Mode */
804 static u_short do_vmode_pan = 0; /* Update the Video Mode */
805 static short do_blank = 0; /* (Un)Blank the Screen (±1) */
806 static u_short do_cursor = 0; /* Move the Cursor */
807
808
809 /*
810 * Various Flags
811 */
812
813 static u_short is_blanked = 0; /* Screen is Blanked */
814 static u_short is_lace = 0; /* Screen is laced */
815
816 /*
817 * Predefined Video Modes
818 *
819 */
820
821 static struct fb_videomode ami_modedb[] __initdata = {
822
823 /*
824 * AmigaOS Video Modes
825 *
826 * If you change these, make sure to update DEFMODE_* as well!
827 */
828
829 {
830 /* 640x200, 15 kHz, 60 Hz (NTSC) */
831 "ntsc", 60, 640, 200, TAG_HIRES, 106, 86, 44, 16, 76, 2,
832 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
833 }, {
834 /* 640x400, 15 kHz, 60 Hz interlaced (NTSC) */
835 "ntsc-lace", 60, 640, 400, TAG_HIRES, 106, 86, 88, 33, 76, 4,
836 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
837 }, {
838 /* 640x256, 15 kHz, 50 Hz (PAL) */
839 "pal", 50, 640, 256, TAG_HIRES, 106, 86, 40, 14, 76, 2,
840 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
841 }, {
842 /* 640x512, 15 kHz, 50 Hz interlaced (PAL) */
843 "pal-lace", 50, 640, 512, TAG_HIRES, 106, 86, 80, 29, 76, 4,
844 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
845 }, {
846 /* 640x480, 29 kHz, 57 Hz */
847 "multiscan", 57, 640, 480, TAG_SHRES, 96, 112, 29, 8, 72, 8,
848 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
849 }, {
850 /* 640x960, 29 kHz, 57 Hz interlaced */
851 "multiscan-lace", 57, 640, 960, TAG_SHRES, 96, 112, 58, 16, 72, 16,
852 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
853 }, {
854 /* 640x200, 15 kHz, 72 Hz */
855 "euro36", 72, 640, 200, TAG_HIRES, 92, 124, 6, 6, 52, 5,
856 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
857 }, {
858 /* 640x400, 15 kHz, 72 Hz interlaced */
859 "euro36-lace", 72, 640, 400, TAG_HIRES, 92, 124, 12, 12, 52, 10,
860 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
861 }, {
862 /* 640x400, 29 kHz, 68 Hz */
863 "euro72", 68, 640, 400, TAG_SHRES, 164, 92, 9, 9, 80, 8,
864 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
865 }, {
866 /* 640x800, 29 kHz, 68 Hz interlaced */
867 "euro72-lace", 68, 640, 800, TAG_SHRES, 164, 92, 18, 18, 80, 16,
868 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
869 }, {
870 /* 800x300, 23 kHz, 70 Hz */
871 "super72", 70, 800, 300, TAG_SHRES, 212, 140, 10, 11, 80, 7,
872 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
873 }, {
874 /* 800x600, 23 kHz, 70 Hz interlaced */
875 "super72-lace", 70, 800, 600, TAG_SHRES, 212, 140, 20, 22, 80, 14,
876 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
877 }, {
878 /* 640x200, 27 kHz, 57 Hz doublescan */
879 "dblntsc", 57, 640, 200, TAG_SHRES, 196, 124, 18, 17, 80, 4,
880 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
881 }, {
882 /* 640x400, 27 kHz, 57 Hz */
883 "dblntsc-ff", 57, 640, 400, TAG_SHRES, 196, 124, 36, 35, 80, 7,
884 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
885 }, {
886 /* 640x800, 27 kHz, 57 Hz interlaced */
887 "dblntsc-lace", 57, 640, 800, TAG_SHRES, 196, 124, 72, 70, 80, 14,
888 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
889 }, {
890 /* 640x256, 27 kHz, 47 Hz doublescan */
891 "dblpal", 47, 640, 256, TAG_SHRES, 196, 124, 14, 13, 80, 4,
892 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
893 }, {
894 /* 640x512, 27 kHz, 47 Hz */
895 "dblpal-ff", 47, 640, 512, TAG_SHRES, 196, 124, 28, 27, 80, 7,
896 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
897 }, {
898 /* 640x1024, 27 kHz, 47 Hz interlaced */
899 "dblpal-lace", 47, 640, 1024, TAG_SHRES, 196, 124, 56, 54, 80, 14,
900 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
901 },
902
903 /*
904 * VGA Video Modes
905 */
906
907 {
908 /* 640x480, 31 kHz, 60 Hz (VGA) */
909 "vga", 60, 640, 480, TAG_SHRES, 64, 96, 30, 9, 112, 2,
910 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
911 }, {
912 /* 640x400, 31 kHz, 70 Hz (VGA) */
913 "vga70", 70, 640, 400, TAG_SHRES, 64, 96, 35, 12, 112, 2,
914 FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
915 },
916
917 #if 0
918
919 /*
920 * A2024 video modes
921 * These modes don't work yet because there's no A2024 driver.
922 */
923
924 {
925 /* 1024x800, 10 Hz */
926 "a2024-10", 10, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
927 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
928 }, {
929 /* 1024x800, 15 Hz */
930 "a2024-15", 15, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
931 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
932 }
933 #endif
934 };
935
936 #define NUM_TOTAL_MODES ARRAY_SIZE(ami_modedb)
937
938 static char *mode_option __initdata = NULL;
939 static int round_down_bpp = 1; /* for mode probing */
940
941 /*
942 * Some default modes
943 */
944
945
946 #define DEFMODE_PAL 2 /* "pal" for PAL OCS/ECS */
947 #define DEFMODE_NTSC 0 /* "ntsc" for NTSC OCS/ECS */
948 #define DEFMODE_AMBER_PAL 3 /* "pal-lace" for flicker fixed PAL (A3000) */
949 #define DEFMODE_AMBER_NTSC 1 /* "ntsc-lace" for flicker fixed NTSC (A3000) */
950 #define DEFMODE_AGA 19 /* "vga70" for AGA */
951
952
953 static int amifb_ilbm = 0; /* interleaved or normal bitplanes */
954 static int amifb_inverse = 0;
955
956
957 /*
958 * Macros for the conversion from real world values to hardware register
959 * values
960 *
961 * This helps us to keep our attention on the real stuff...
962 *
963 * Hardware limits for AGA:
964 *
965 * parameter min max step
966 * --------- --- ---- ----
967 * diwstrt_h 0 2047 1
968 * diwstrt_v 0 2047 1
969 * diwstop_h 0 4095 1
970 * diwstop_v 0 4095 1
971 *
972 * ddfstrt 0 2032 16
973 * ddfstop 0 2032 16
974 *
975 * htotal 8 2048 8
976 * hsstrt 0 2040 8
977 * hsstop 0 2040 8
978 * vtotal 1 4096 1
979 * vsstrt 0 4095 1
980 * vsstop 0 4095 1
981 * hcenter 0 2040 8
982 *
983 * hbstrt 0 2047 1
984 * hbstop 0 2047 1
985 * vbstrt 0 4095 1
986 * vbstop 0 4095 1
987 *
988 * Horizontal values are in 35 ns (SHRES) pixels
989 * Vertical values are in half scanlines
990 */
991
992 /* bplcon1 (smooth scrolling) */
993
994 #define hscroll2hw(hscroll) \
995 (((hscroll)<<12 & 0x3000) | ((hscroll)<<8 & 0xc300) | \
996 ((hscroll)<<4 & 0x0c00) | ((hscroll)<<2 & 0x00f0) | ((hscroll)>>2 & 0x000f))
997
998 /* diwstrt/diwstop/diwhigh (visible display window) */
999
1000 #define diwstrt2hw(diwstrt_h, diwstrt_v) \
1001 (((diwstrt_v)<<7 & 0xff00) | ((diwstrt_h)>>2 & 0x00ff))
1002 #define diwstop2hw(diwstop_h, diwstop_v) \
1003 (((diwstop_v)<<7 & 0xff00) | ((diwstop_h)>>2 & 0x00ff))
1004 #define diwhigh2hw(diwstrt_h, diwstrt_v, diwstop_h, diwstop_v) \
1005 (((diwstop_h)<<3 & 0x2000) | ((diwstop_h)<<11 & 0x1800) | \
1006 ((diwstop_v)>>1 & 0x0700) | ((diwstrt_h)>>5 & 0x0020) | \
1007 ((diwstrt_h)<<3 & 0x0018) | ((diwstrt_v)>>9 & 0x0007))
1008
1009 /* ddfstrt/ddfstop (display DMA) */
1010
1011 #define ddfstrt2hw(ddfstrt) div8(ddfstrt)
1012 #define ddfstop2hw(ddfstop) div8(ddfstop)
1013
1014 /* hsstrt/hsstop/htotal/vsstrt/vsstop/vtotal/hcenter (sync timings) */
1015
1016 #define hsstrt2hw(hsstrt) (div8(hsstrt))
1017 #define hsstop2hw(hsstop) (div8(hsstop))
1018 #define htotal2hw(htotal) (div8(htotal)-1)
1019 #define vsstrt2hw(vsstrt) (div2(vsstrt))
1020 #define vsstop2hw(vsstop) (div2(vsstop))
1021 #define vtotal2hw(vtotal) (div2(vtotal)-1)
1022 #define hcenter2hw(htotal) (div8(htotal))
1023
1024 /* hbstrt/hbstop/vbstrt/vbstop (blanking timings) */
1025
1026 #define hbstrt2hw(hbstrt) (((hbstrt)<<8 & 0x0700) | ((hbstrt)>>3 & 0x00ff))
1027 #define hbstop2hw(hbstop) (((hbstop)<<8 & 0x0700) | ((hbstop)>>3 & 0x00ff))
1028 #define vbstrt2hw(vbstrt) (div2(vbstrt))
1029 #define vbstop2hw(vbstop) (div2(vbstop))
1030
1031 /* colour */
1032
1033 #define rgb2hw8_high(red, green, blue) \
1034 (((red & 0xf0)<<4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1035 #define rgb2hw8_low(red, green, blue) \
1036 (((red & 0x0f)<<8) | ((green & 0x0f)<<4) | (blue & 0x0f))
1037 #define rgb2hw4(red, green, blue) \
1038 (((red & 0xf0)<<4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1039 #define rgb2hw2(red, green, blue) \
1040 (((red & 0xc0)<<4) | (green & 0xc0) | ((blue & 0xc0)>>4))
1041
1042 /* sprpos/sprctl (sprite positioning) */
1043
1044 #define spr2hw_pos(start_v, start_h) \
1045 (((start_v)<<7&0xff00) | ((start_h)>>3&0x00ff))
1046 #define spr2hw_ctl(start_v, start_h, stop_v) \
1047 (((stop_v)<<7&0xff00) | ((start_v)>>4&0x0040) | ((stop_v)>>5&0x0020) | \
1048 ((start_h)<<3&0x0018) | ((start_v)>>7&0x0004) | ((stop_v)>>8&0x0002) | \
1049 ((start_h)>>2&0x0001))
1050
1051 /* get current vertical position of beam */
1052 #define get_vbpos() ((u_short)((*(u_long volatile *)&custom.vposr >> 7) & 0xffe))
1053
1054 /*
1055 * Copper Initialisation List
1056 */
1057
1058 #define COPINITSIZE (sizeof(copins)*40)
1059
1060 enum {
1061 cip_bplcon0
1062 };
1063
1064 /*
1065 * Long Frame/Short Frame Copper List
1066 * Don't change the order, build_copper()/rebuild_copper() rely on this
1067 */
1068
1069 #define COPLISTSIZE (sizeof(copins)*64)
1070
1071 enum {
1072 cop_wait, cop_bplcon0,
1073 cop_spr0ptrh, cop_spr0ptrl,
1074 cop_diwstrt, cop_diwstop,
1075 cop_diwhigh,
1076 };
1077
1078 /*
1079 * Pixel modes for Bitplanes and Sprites
1080 */
1081
1082 static u_short bplpixmode[3] = {
1083 BPC0_SHRES, /* 35 ns */
1084 BPC0_HIRES, /* 70 ns */
1085 0 /* 140 ns */
1086 };
1087
1088 static u_short sprpixmode[3] = {
1089 BPC3_SPRES1 | BPC3_SPRES0, /* 35 ns */
1090 BPC3_SPRES1, /* 70 ns */
1091 BPC3_SPRES0 /* 140 ns */
1092 };
1093
1094 /*
1095 * Fetch modes for Bitplanes and Sprites
1096 */
1097
1098 static u_short bplfetchmode[3] = {
1099 0, /* 1x */
1100 FMODE_BPL32, /* 2x */
1101 FMODE_BPAGEM | FMODE_BPL32 /* 4x */
1102 };
1103
1104 static u_short sprfetchmode[3] = {
1105 0, /* 1x */
1106 FMODE_SPR32, /* 2x */
1107 FMODE_SPAGEM | FMODE_SPR32 /* 4x */
1108 };
1109
1110
1111 /*
1112 * Interface used by the world
1113 */
1114
1115 int amifb_setup(char*);
1116
1117 static int amifb_check_var(struct fb_var_screeninfo *var,
1118 struct fb_info *info);
1119 static int amifb_set_par(struct fb_info *info);
1120 static int amifb_setcolreg(unsigned regno, unsigned red, unsigned green,
1121 unsigned blue, unsigned transp,
1122 struct fb_info *info);
1123 static int amifb_blank(int blank, struct fb_info *info);
1124 static int amifb_pan_display(struct fb_var_screeninfo *var,
1125 struct fb_info *info);
1126 static void amifb_fillrect(struct fb_info *info,
1127 const struct fb_fillrect *rect);
1128 static void amifb_copyarea(struct fb_info *info,
1129 const struct fb_copyarea *region);
1130 static void amifb_imageblit(struct fb_info *info,
1131 const struct fb_image *image);
1132 static int amifb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg);
1133
1134
1135 /*
1136 * Interface to the low level console driver
1137 */
1138
1139 int amifb_init(void);
1140 static void amifb_deinit(void);
1141
1142 /*
1143 * Internal routines
1144 */
1145
1146 static int flash_cursor(void);
1147 static irqreturn_t amifb_interrupt(int irq, void *dev_id);
1148 static u_long chipalloc(u_long size);
1149 static void chipfree(void);
1150
1151 /*
1152 * Hardware routines
1153 */
1154
1155 static int ami_decode_var(struct fb_var_screeninfo *var,
1156 struct amifb_par *par);
1157 static int ami_encode_var(struct fb_var_screeninfo *var,
1158 struct amifb_par *par);
1159 static void ami_pan_var(struct fb_var_screeninfo *var);
1160 static int ami_update_par(void);
1161 static void ami_update_display(void);
1162 static void ami_init_display(void);
1163 static void ami_do_blank(void);
1164 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix);
1165 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data);
1166 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data);
1167 static int ami_get_cursorstate(struct fb_cursorstate *state);
1168 static int ami_set_cursorstate(struct fb_cursorstate *state);
1169 static void ami_set_sprite(void);
1170 static void ami_init_copper(void);
1171 static void ami_reinit_copper(void);
1172 static void ami_build_copper(void);
1173 static void ami_rebuild_copper(void);
1174
1175
1176 static struct fb_ops amifb_ops = {
1177 .owner = THIS_MODULE,
1178 .fb_check_var = amifb_check_var,
1179 .fb_set_par = amifb_set_par,
1180 .fb_setcolreg = amifb_setcolreg,
1181 .fb_blank = amifb_blank,
1182 .fb_pan_display = amifb_pan_display,
1183 .fb_fillrect = amifb_fillrect,
1184 .fb_copyarea = amifb_copyarea,
1185 .fb_imageblit = amifb_imageblit,
1186 .fb_ioctl = amifb_ioctl,
1187 };
1188
1189 static void __init amifb_setup_mcap(char *spec)
1190 {
1191 char *p;
1192 int vmin, vmax, hmin, hmax;
1193
1194 /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax>
1195 * <V*> vertical freq. in Hz
1196 * <H*> horizontal freq. in kHz
1197 */
1198
1199 if (!(p = strsep(&spec, ";")) || !*p)
1200 return;
1201 vmin = simple_strtoul(p, NULL, 10);
1202 if (vmin <= 0)
1203 return;
1204 if (!(p = strsep(&spec, ";")) || !*p)
1205 return;
1206 vmax = simple_strtoul(p, NULL, 10);
1207 if (vmax <= 0 || vmax <= vmin)
1208 return;
1209 if (!(p = strsep(&spec, ";")) || !*p)
1210 return;
1211 hmin = 1000 * simple_strtoul(p, NULL, 10);
1212 if (hmin <= 0)
1213 return;
1214 if (!(p = strsep(&spec, "")) || !*p)
1215 return;
1216 hmax = 1000 * simple_strtoul(p, NULL, 10);
1217 if (hmax <= 0 || hmax <= hmin)
1218 return;
1219
1220 fb_info.monspecs.vfmin = vmin;
1221 fb_info.monspecs.vfmax = vmax;
1222 fb_info.monspecs.hfmin = hmin;
1223 fb_info.monspecs.hfmax = hmax;
1224 }
1225
1226 int __init amifb_setup(char *options)
1227 {
1228 char *this_opt;
1229
1230 if (!options || !*options)
1231 return 0;
1232
1233 while ((this_opt = strsep(&options, ",")) != NULL) {
1234 if (!*this_opt)
1235 continue;
1236 if (!strcmp(this_opt, "inverse")) {
1237 amifb_inverse = 1;
1238 fb_invert_cmaps();
1239 } else if (!strcmp(this_opt, "ilbm"))
1240 amifb_ilbm = 1;
1241 else if (!strncmp(this_opt, "monitorcap:", 11))
1242 amifb_setup_mcap(this_opt+11);
1243 else if (!strncmp(this_opt, "fstart:", 7))
1244 min_fstrt = simple_strtoul(this_opt+7, NULL, 0);
1245 else
1246 mode_option = this_opt;
1247 }
1248
1249 if (min_fstrt < 48)
1250 min_fstrt = 48;
1251
1252 return 0;
1253 }
1254
1255
1256 static int amifb_check_var(struct fb_var_screeninfo *var,
1257 struct fb_info *info)
1258 {
1259 int err;
1260 struct amifb_par par;
1261
1262 /* Validate wanted screen parameters */
1263 if ((err = ami_decode_var(var, &par)))
1264 return err;
1265
1266 /* Encode (possibly rounded) screen parameters */
1267 ami_encode_var(var, &par);
1268 return 0;
1269 }
1270
1271
1272 static int amifb_set_par(struct fb_info *info)
1273 {
1274 struct amifb_par *par = (struct amifb_par *)info->par;
1275
1276 do_vmode_pan = 0;
1277 do_vmode_full = 0;
1278
1279 /* Decode wanted screen parameters */
1280 ami_decode_var(&info->var, par);
1281
1282 /* Set new videomode */
1283 ami_build_copper();
1284
1285 /* Set VBlank trigger */
1286 do_vmode_full = 1;
1287
1288 /* Update fix for new screen parameters */
1289 if (par->bpp == 1) {
1290 info->fix.type = FB_TYPE_PACKED_PIXELS;
1291 info->fix.type_aux = 0;
1292 } else if (amifb_ilbm) {
1293 info->fix.type = FB_TYPE_INTERLEAVED_PLANES;
1294 info->fix.type_aux = par->next_line;
1295 } else {
1296 info->fix.type = FB_TYPE_PLANES;
1297 info->fix.type_aux = 0;
1298 }
1299 info->fix.line_length = div8(upx(16<<maxfmode, par->vxres));
1300
1301 if (par->vmode & FB_VMODE_YWRAP) {
1302 info->fix.ywrapstep = 1;
1303 info->fix.xpanstep = 0;
1304 info->fix.ypanstep = 0;
1305 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YWRAP |
1306 FBINFO_READS_FAST; /* override SCROLL_REDRAW */
1307 } else {
1308 info->fix.ywrapstep = 0;
1309 if (par->vmode & FB_VMODE_SMOOTH_XPAN)
1310 info->fix.xpanstep = 1;
1311 else
1312 info->fix.xpanstep = 16<<maxfmode;
1313 info->fix.ypanstep = 1;
1314 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1315 }
1316 return 0;
1317 }
1318
1319
1320 /*
1321 * Pan or Wrap the Display
1322 *
1323 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1324 */
1325
1326 static int amifb_pan_display(struct fb_var_screeninfo *var,
1327 struct fb_info *info)
1328 {
1329 if (var->vmode & FB_VMODE_YWRAP) {
1330 if (var->yoffset < 0 ||
1331 var->yoffset >= info->var.yres_virtual || var->xoffset)
1332 return -EINVAL;
1333 } else {
1334 /*
1335 * TODO: There will be problems when xpan!=1, so some columns
1336 * on the right side will never be seen
1337 */
1338 if (var->xoffset+info->var.xres > upx(16<<maxfmode, info->var.xres_virtual) ||
1339 var->yoffset+info->var.yres > info->var.yres_virtual)
1340 return -EINVAL;
1341 }
1342 ami_pan_var(var);
1343 info->var.xoffset = var->xoffset;
1344 info->var.yoffset = var->yoffset;
1345 if (var->vmode & FB_VMODE_YWRAP)
1346 info->var.vmode |= FB_VMODE_YWRAP;
1347 else
1348 info->var.vmode &= ~FB_VMODE_YWRAP;
1349 return 0;
1350 }
1351
1352
1353 #if BITS_PER_LONG == 32
1354 #define BYTES_PER_LONG 4
1355 #define SHIFT_PER_LONG 5
1356 #elif BITS_PER_LONG == 64
1357 #define BYTES_PER_LONG 8
1358 #define SHIFT_PER_LONG 6
1359 #else
1360 #define Please update me
1361 #endif
1362
1363
1364 /*
1365 * Compose two values, using a bitmask as decision value
1366 * This is equivalent to (a & mask) | (b & ~mask)
1367 */
1368
1369 static inline unsigned long comp(unsigned long a, unsigned long b,
1370 unsigned long mask)
1371 {
1372 return ((a ^ b) & mask) ^ b;
1373 }
1374
1375
1376 static inline unsigned long xor(unsigned long a, unsigned long b,
1377 unsigned long mask)
1378 {
1379 return (a & mask) ^ b;
1380 }
1381
1382
1383 /*
1384 * Unaligned forward bit copy using 32-bit or 64-bit memory accesses
1385 */
1386
1387 static void bitcpy(unsigned long *dst, int dst_idx, const unsigned long *src,
1388 int src_idx, u32 n)
1389 {
1390 unsigned long first, last;
1391 int shift = dst_idx-src_idx, left, right;
1392 unsigned long d0, d1;
1393 int m;
1394
1395 if (!n)
1396 return;
1397
1398 shift = dst_idx-src_idx;
1399 first = ~0UL >> dst_idx;
1400 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1401
1402 if (!shift) {
1403 // Same alignment for source and dest
1404
1405 if (dst_idx+n <= BITS_PER_LONG) {
1406 // Single word
1407 if (last)
1408 first &= last;
1409 *dst = comp(*src, *dst, first);
1410 } else {
1411 // Multiple destination words
1412 // Leading bits
1413 if (first) {
1414 *dst = comp(*src, *dst, first);
1415 dst++;
1416 src++;
1417 n -= BITS_PER_LONG-dst_idx;
1418 }
1419
1420 // Main chunk
1421 n /= BITS_PER_LONG;
1422 while (n >= 8) {
1423 *dst++ = *src++;
1424 *dst++ = *src++;
1425 *dst++ = *src++;
1426 *dst++ = *src++;
1427 *dst++ = *src++;
1428 *dst++ = *src++;
1429 *dst++ = *src++;
1430 *dst++ = *src++;
1431 n -= 8;
1432 }
1433 while (n--)
1434 *dst++ = *src++;
1435
1436 // Trailing bits
1437 if (last)
1438 *dst = comp(*src, *dst, last);
1439 }
1440 } else {
1441 // Different alignment for source and dest
1442
1443 right = shift & (BITS_PER_LONG-1);
1444 left = -shift & (BITS_PER_LONG-1);
1445
1446 if (dst_idx+n <= BITS_PER_LONG) {
1447 // Single destination word
1448 if (last)
1449 first &= last;
1450 if (shift > 0) {
1451 // Single source word
1452 *dst = comp(*src >> right, *dst, first);
1453 } else if (src_idx+n <= BITS_PER_LONG) {
1454 // Single source word
1455 *dst = comp(*src << left, *dst, first);
1456 } else {
1457 // 2 source words
1458 d0 = *src++;
1459 d1 = *src;
1460 *dst = comp(d0 << left | d1 >> right, *dst,
1461 first);
1462 }
1463 } else {
1464 // Multiple destination words
1465 d0 = *src++;
1466 // Leading bits
1467 if (shift > 0) {
1468 // Single source word
1469 *dst = comp(d0 >> right, *dst, first);
1470 dst++;
1471 n -= BITS_PER_LONG-dst_idx;
1472 } else {
1473 // 2 source words
1474 d1 = *src++;
1475 *dst = comp(d0 << left | d1 >> right, *dst,
1476 first);
1477 d0 = d1;
1478 dst++;
1479 n -= BITS_PER_LONG-dst_idx;
1480 }
1481
1482 // Main chunk
1483 m = n % BITS_PER_LONG;
1484 n /= BITS_PER_LONG;
1485 while (n >= 4) {
1486 d1 = *src++;
1487 *dst++ = d0 << left | d1 >> right;
1488 d0 = d1;
1489 d1 = *src++;
1490 *dst++ = d0 << left | d1 >> right;
1491 d0 = d1;
1492 d1 = *src++;
1493 *dst++ = d0 << left | d1 >> right;
1494 d0 = d1;
1495 d1 = *src++;
1496 *dst++ = d0 << left | d1 >> right;
1497 d0 = d1;
1498 n -= 4;
1499 }
1500 while (n--) {
1501 d1 = *src++;
1502 *dst++ = d0 << left | d1 >> right;
1503 d0 = d1;
1504 }
1505
1506 // Trailing bits
1507 if (last) {
1508 if (m <= right) {
1509 // Single source word
1510 *dst = comp(d0 << left, *dst, last);
1511 } else {
1512 // 2 source words
1513 d1 = *src;
1514 *dst = comp(d0 << left | d1 >> right,
1515 *dst, last);
1516 }
1517 }
1518 }
1519 }
1520 }
1521
1522
1523 /*
1524 * Unaligned reverse bit copy using 32-bit or 64-bit memory accesses
1525 */
1526
1527 static void bitcpy_rev(unsigned long *dst, int dst_idx,
1528 const unsigned long *src, int src_idx, u32 n)
1529 {
1530 unsigned long first, last;
1531 int shift = dst_idx-src_idx, left, right;
1532 unsigned long d0, d1;
1533 int m;
1534
1535 if (!n)
1536 return;
1537
1538 dst += (n-1)/BITS_PER_LONG;
1539 src += (n-1)/BITS_PER_LONG;
1540 if ((n-1) % BITS_PER_LONG) {
1541 dst_idx += (n-1) % BITS_PER_LONG;
1542 dst += dst_idx >> SHIFT_PER_LONG;
1543 dst_idx &= BITS_PER_LONG-1;
1544 src_idx += (n-1) % BITS_PER_LONG;
1545 src += src_idx >> SHIFT_PER_LONG;
1546 src_idx &= BITS_PER_LONG-1;
1547 }
1548
1549 shift = dst_idx-src_idx;
1550 first = ~0UL << (BITS_PER_LONG-1-dst_idx);
1551 last = ~(~0UL << (BITS_PER_LONG-1-((dst_idx-n) % BITS_PER_LONG)));
1552
1553 if (!shift) {
1554 // Same alignment for source and dest
1555
1556 if ((unsigned long)dst_idx+1 >= n) {
1557 // Single word
1558 if (last)
1559 first &= last;
1560 *dst = comp(*src, *dst, first);
1561 } else {
1562 // Multiple destination words
1563 // Leading bits
1564 if (first) {
1565 *dst = comp(*src, *dst, first);
1566 dst--;
1567 src--;
1568 n -= dst_idx+1;
1569 }
1570
1571 // Main chunk
1572 n /= BITS_PER_LONG;
1573 while (n >= 8) {
1574 *dst-- = *src--;
1575 *dst-- = *src--;
1576 *dst-- = *src--;
1577 *dst-- = *src--;
1578 *dst-- = *src--;
1579 *dst-- = *src--;
1580 *dst-- = *src--;
1581 *dst-- = *src--;
1582 n -= 8;
1583 }
1584 while (n--)
1585 *dst-- = *src--;
1586
1587 // Trailing bits
1588 if (last)
1589 *dst = comp(*src, *dst, last);
1590 }
1591 } else {
1592 // Different alignment for source and dest
1593
1594 right = shift & (BITS_PER_LONG-1);
1595 left = -shift & (BITS_PER_LONG-1);
1596
1597 if ((unsigned long)dst_idx+1 >= n) {
1598 // Single destination word
1599 if (last)
1600 first &= last;
1601 if (shift < 0) {
1602 // Single source word
1603 *dst = comp(*src << left, *dst, first);
1604 } else if (1+(unsigned long)src_idx >= n) {
1605 // Single source word
1606 *dst = comp(*src >> right, *dst, first);
1607 } else {
1608 // 2 source words
1609 d0 = *src--;
1610 d1 = *src;
1611 *dst = comp(d0 >> right | d1 << left, *dst,
1612 first);
1613 }
1614 } else {
1615 // Multiple destination words
1616 d0 = *src--;
1617 // Leading bits
1618 if (shift < 0) {
1619 // Single source word
1620 *dst = comp(d0 << left, *dst, first);
1621 dst--;
1622 n -= dst_idx+1;
1623 } else {
1624 // 2 source words
1625 d1 = *src--;
1626 *dst = comp(d0 >> right | d1 << left, *dst,
1627 first);
1628 d0 = d1;
1629 dst--;
1630 n -= dst_idx+1;
1631 }
1632
1633 // Main chunk
1634 m = n % BITS_PER_LONG;
1635 n /= BITS_PER_LONG;
1636 while (n >= 4) {
1637 d1 = *src--;
1638 *dst-- = d0 >> right | d1 << left;
1639 d0 = d1;
1640 d1 = *src--;
1641 *dst-- = d0 >> right | d1 << left;
1642 d0 = d1;
1643 d1 = *src--;
1644 *dst-- = d0 >> right | d1 << left;
1645 d0 = d1;
1646 d1 = *src--;
1647 *dst-- = d0 >> right | d1 << left;
1648 d0 = d1;
1649 n -= 4;
1650 }
1651 while (n--) {
1652 d1 = *src--;
1653 *dst-- = d0 >> right | d1 << left;
1654 d0 = d1;
1655 }
1656
1657 // Trailing bits
1658 if (last) {
1659 if (m <= left) {
1660 // Single source word
1661 *dst = comp(d0 >> right, *dst, last);
1662 } else {
1663 // 2 source words
1664 d1 = *src;
1665 *dst = comp(d0 >> right | d1 << left,
1666 *dst, last);
1667 }
1668 }
1669 }
1670 }
1671 }
1672
1673
1674 /*
1675 * Unaligned forward inverting bit copy using 32-bit or 64-bit memory
1676 * accesses
1677 */
1678
1679 static void bitcpy_not(unsigned long *dst, int dst_idx,
1680 const unsigned long *src, int src_idx, u32 n)
1681 {
1682 unsigned long first, last;
1683 int shift = dst_idx-src_idx, left, right;
1684 unsigned long d0, d1;
1685 int m;
1686
1687 if (!n)
1688 return;
1689
1690 shift = dst_idx-src_idx;
1691 first = ~0UL >> dst_idx;
1692 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1693
1694 if (!shift) {
1695 // Same alignment for source and dest
1696
1697 if (dst_idx+n <= BITS_PER_LONG) {
1698 // Single word
1699 if (last)
1700 first &= last;
1701 *dst = comp(~*src, *dst, first);
1702 } else {
1703 // Multiple destination words
1704 // Leading bits
1705 if (first) {
1706 *dst = comp(~*src, *dst, first);
1707 dst++;
1708 src++;
1709 n -= BITS_PER_LONG-dst_idx;
1710 }
1711
1712 // Main chunk
1713 n /= BITS_PER_LONG;
1714 while (n >= 8) {
1715 *dst++ = ~*src++;
1716 *dst++ = ~*src++;
1717 *dst++ = ~*src++;
1718 *dst++ = ~*src++;
1719 *dst++ = ~*src++;
1720 *dst++ = ~*src++;
1721 *dst++ = ~*src++;
1722 *dst++ = ~*src++;
1723 n -= 8;
1724 }
1725 while (n--)
1726 *dst++ = ~*src++;
1727
1728 // Trailing bits
1729 if (last)
1730 *dst = comp(~*src, *dst, last);
1731 }
1732 } else {
1733 // Different alignment for source and dest
1734
1735 right = shift & (BITS_PER_LONG-1);
1736 left = -shift & (BITS_PER_LONG-1);
1737
1738 if (dst_idx+n <= BITS_PER_LONG) {
1739 // Single destination word
1740 if (last)
1741 first &= last;
1742 if (shift > 0) {
1743 // Single source word
1744 *dst = comp(~*src >> right, *dst, first);
1745 } else if (src_idx+n <= BITS_PER_LONG) {
1746 // Single source word
1747 *dst = comp(~*src << left, *dst, first);
1748 } else {
1749 // 2 source words
1750 d0 = ~*src++;
1751 d1 = ~*src;
1752 *dst = comp(d0 << left | d1 >> right, *dst,
1753 first);
1754 }
1755 } else {
1756 // Multiple destination words
1757 d0 = ~*src++;
1758 // Leading bits
1759 if (shift > 0) {
1760 // Single source word
1761 *dst = comp(d0 >> right, *dst, first);
1762 dst++;
1763 n -= BITS_PER_LONG-dst_idx;
1764 } else {
1765 // 2 source words
1766 d1 = ~*src++;
1767 *dst = comp(d0 << left | d1 >> right, *dst,
1768 first);
1769 d0 = d1;
1770 dst++;
1771 n -= BITS_PER_LONG-dst_idx;
1772 }
1773
1774 // Main chunk
1775 m = n % BITS_PER_LONG;
1776 n /= BITS_PER_LONG;
1777 while (n >= 4) {
1778 d1 = ~*src++;
1779 *dst++ = d0 << left | d1 >> right;
1780 d0 = d1;
1781 d1 = ~*src++;
1782 *dst++ = d0 << left | d1 >> right;
1783 d0 = d1;
1784 d1 = ~*src++;
1785 *dst++ = d0 << left | d1 >> right;
1786 d0 = d1;
1787 d1 = ~*src++;
1788 *dst++ = d0 << left | d1 >> right;
1789 d0 = d1;
1790 n -= 4;
1791 }
1792 while (n--) {
1793 d1 = ~*src++;
1794 *dst++ = d0 << left | d1 >> right;
1795 d0 = d1;
1796 }
1797
1798 // Trailing bits
1799 if (last) {
1800 if (m <= right) {
1801 // Single source word
1802 *dst = comp(d0 << left, *dst, last);
1803 } else {
1804 // 2 source words
1805 d1 = ~*src;
1806 *dst = comp(d0 << left | d1 >> right,
1807 *dst, last);
1808 }
1809 }
1810 }
1811 }
1812 }
1813
1814
1815 /*
1816 * Unaligned 32-bit pattern fill using 32/64-bit memory accesses
1817 */
1818
1819 static void bitfill32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1820 {
1821 unsigned long val = pat;
1822 unsigned long first, last;
1823
1824 if (!n)
1825 return;
1826
1827 #if BITS_PER_LONG == 64
1828 val |= val << 32;
1829 #endif
1830
1831 first = ~0UL >> dst_idx;
1832 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1833
1834 if (dst_idx+n <= BITS_PER_LONG) {
1835 // Single word
1836 if (last)
1837 first &= last;
1838 *dst = comp(val, *dst, first);
1839 } else {
1840 // Multiple destination words
1841 // Leading bits
1842 if (first) {
1843 *dst = comp(val, *dst, first);
1844 dst++;
1845 n -= BITS_PER_LONG-dst_idx;
1846 }
1847
1848 // Main chunk
1849 n /= BITS_PER_LONG;
1850 while (n >= 8) {
1851 *dst++ = val;
1852 *dst++ = val;
1853 *dst++ = val;
1854 *dst++ = val;
1855 *dst++ = val;
1856 *dst++ = val;
1857 *dst++ = val;
1858 *dst++ = val;
1859 n -= 8;
1860 }
1861 while (n--)
1862 *dst++ = val;
1863
1864 // Trailing bits
1865 if (last)
1866 *dst = comp(val, *dst, last);
1867 }
1868 }
1869
1870
1871 /*
1872 * Unaligned 32-bit pattern xor using 32/64-bit memory accesses
1873 */
1874
1875 static void bitxor32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1876 {
1877 unsigned long val = pat;
1878 unsigned long first, last;
1879
1880 if (!n)
1881 return;
1882
1883 #if BITS_PER_LONG == 64
1884 val |= val << 32;
1885 #endif
1886
1887 first = ~0UL >> dst_idx;
1888 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1889
1890 if (dst_idx+n <= BITS_PER_LONG) {
1891 // Single word
1892 if (last)
1893 first &= last;
1894 *dst = xor(val, *dst, first);
1895 } else {
1896 // Multiple destination words
1897 // Leading bits
1898 if (first) {
1899 *dst = xor(val, *dst, first);
1900 dst++;
1901 n -= BITS_PER_LONG-dst_idx;
1902 }
1903
1904 // Main chunk
1905 n /= BITS_PER_LONG;
1906 while (n >= 4) {
1907 *dst++ ^= val;
1908 *dst++ ^= val;
1909 *dst++ ^= val;
1910 *dst++ ^= val;
1911 n -= 4;
1912 }
1913 while (n--)
1914 *dst++ ^= val;
1915
1916 // Trailing bits
1917 if (last)
1918 *dst = xor(val, *dst, last);
1919 }
1920 }
1921
1922 static inline void fill_one_line(int bpp, unsigned long next_plane,
1923 unsigned long *dst, int dst_idx, u32 n,
1924 u32 color)
1925 {
1926 while (1) {
1927 dst += dst_idx >> SHIFT_PER_LONG;
1928 dst_idx &= (BITS_PER_LONG-1);
1929 bitfill32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1930 if (!--bpp)
1931 break;
1932 color >>= 1;
1933 dst_idx += next_plane*8;
1934 }
1935 }
1936
1937 static inline void xor_one_line(int bpp, unsigned long next_plane,
1938 unsigned long *dst, int dst_idx, u32 n,
1939 u32 color)
1940 {
1941 while (color) {
1942 dst += dst_idx >> SHIFT_PER_LONG;
1943 dst_idx &= (BITS_PER_LONG-1);
1944 bitxor32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1945 if (!--bpp)
1946 break;
1947 color >>= 1;
1948 dst_idx += next_plane*8;
1949 }
1950 }
1951
1952
1953 static void amifb_fillrect(struct fb_info *info,
1954 const struct fb_fillrect *rect)
1955 {
1956 struct amifb_par *par = (struct amifb_par *)info->par;
1957 int dst_idx, x2, y2;
1958 unsigned long *dst;
1959 u32 width, height;
1960
1961 if (!rect->width || !rect->height)
1962 return;
1963
1964 /*
1965 * We could use hardware clipping but on many cards you get around
1966 * hardware clipping by writing to framebuffer directly.
1967 * */
1968 x2 = rect->dx + rect->width;
1969 y2 = rect->dy + rect->height;
1970 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
1971 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
1972 width = x2 - rect->dx;
1973 height = y2 - rect->dy;
1974
1975 dst = (unsigned long *)
1976 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
1977 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
1978 dst_idx += rect->dy*par->next_line*8+rect->dx;
1979 while (height--) {
1980 switch (rect->rop) {
1981 case ROP_COPY:
1982 fill_one_line(info->var.bits_per_pixel,
1983 par->next_plane, dst, dst_idx, width,
1984 rect->color);
1985 break;
1986
1987 case ROP_XOR:
1988 xor_one_line(info->var.bits_per_pixel, par->next_plane,
1989 dst, dst_idx, width, rect->color);
1990 break;
1991 }
1992 dst_idx += par->next_line*8;
1993 }
1994 }
1995
1996 static inline void copy_one_line(int bpp, unsigned long next_plane,
1997 unsigned long *dst, int dst_idx,
1998 unsigned long *src, int src_idx, u32 n)
1999 {
2000 while (1) {
2001 dst += dst_idx >> SHIFT_PER_LONG;
2002 dst_idx &= (BITS_PER_LONG-1);
2003 src += src_idx >> SHIFT_PER_LONG;
2004 src_idx &= (BITS_PER_LONG-1);
2005 bitcpy(dst, dst_idx, src, src_idx, n);
2006 if (!--bpp)
2007 break;
2008 dst_idx += next_plane*8;
2009 src_idx += next_plane*8;
2010 }
2011 }
2012
2013 static inline void copy_one_line_rev(int bpp, unsigned long next_plane,
2014 unsigned long *dst, int dst_idx,
2015 unsigned long *src, int src_idx, u32 n)
2016 {
2017 while (1) {
2018 dst += dst_idx >> SHIFT_PER_LONG;
2019 dst_idx &= (BITS_PER_LONG-1);
2020 src += src_idx >> SHIFT_PER_LONG;
2021 src_idx &= (BITS_PER_LONG-1);
2022 bitcpy_rev(dst, dst_idx, src, src_idx, n);
2023 if (!--bpp)
2024 break;
2025 dst_idx += next_plane*8;
2026 src_idx += next_plane*8;
2027 }
2028 }
2029
2030
2031 static void amifb_copyarea(struct fb_info *info,
2032 const struct fb_copyarea *area)
2033 {
2034 struct amifb_par *par = (struct amifb_par *)info->par;
2035 int x2, y2;
2036 u32 dx, dy, sx, sy, width, height;
2037 unsigned long *dst, *src;
2038 int dst_idx, src_idx;
2039 int rev_copy = 0;
2040
2041 /* clip the destination */
2042 x2 = area->dx + area->width;
2043 y2 = area->dy + area->height;
2044 dx = area->dx > 0 ? area->dx : 0;
2045 dy = area->dy > 0 ? area->dy : 0;
2046 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2047 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2048 width = x2 - dx;
2049 height = y2 - dy;
2050
2051 /* update sx,sy */
2052 sx = area->sx + (dx - area->dx);
2053 sy = area->sy + (dy - area->dy);
2054
2055 /* the source must be completely inside the virtual screen */
2056 if (sx < 0 || sy < 0 || (sx + width) > info->var.xres_virtual ||
2057 (sy + height) > info->var.yres_virtual)
2058 return;
2059
2060 if (dy > sy || (dy == sy && dx > sx)) {
2061 dy += height;
2062 sy += height;
2063 rev_copy = 1;
2064 }
2065 dst = (unsigned long *)
2066 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2067 src = dst;
2068 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2069 src_idx = dst_idx;
2070 dst_idx += dy*par->next_line*8+dx;
2071 src_idx += sy*par->next_line*8+sx;
2072 if (rev_copy) {
2073 while (height--) {
2074 dst_idx -= par->next_line*8;
2075 src_idx -= par->next_line*8;
2076 copy_one_line_rev(info->var.bits_per_pixel,
2077 par->next_plane, dst, dst_idx, src,
2078 src_idx, width);
2079 }
2080 } else {
2081 while (height--) {
2082 copy_one_line(info->var.bits_per_pixel,
2083 par->next_plane, dst, dst_idx, src,
2084 src_idx, width);
2085 dst_idx += par->next_line*8;
2086 src_idx += par->next_line*8;
2087 }
2088 }
2089 }
2090
2091
2092 static inline void expand_one_line(int bpp, unsigned long next_plane,
2093 unsigned long *dst, int dst_idx, u32 n,
2094 const u8 *data, u32 bgcolor, u32 fgcolor)
2095 {
2096 const unsigned long *src;
2097 int src_idx;
2098
2099 while (1) {
2100 dst += dst_idx >> SHIFT_PER_LONG;
2101 dst_idx &= (BITS_PER_LONG-1);
2102 if ((bgcolor ^ fgcolor) & 1) {
2103 src = (unsigned long *)((unsigned long)data & ~(BYTES_PER_LONG-1));
2104 src_idx = ((unsigned long)data & (BYTES_PER_LONG-1))*8;
2105 if (fgcolor & 1)
2106 bitcpy(dst, dst_idx, src, src_idx, n);
2107 else
2108 bitcpy_not(dst, dst_idx, src, src_idx, n);
2109 /* set or clear */
2110 } else
2111 bitfill32(dst, dst_idx, fgcolor & 1 ? ~0 : 0, n);
2112 if (!--bpp)
2113 break;
2114 bgcolor >>= 1;
2115 fgcolor >>= 1;
2116 dst_idx += next_plane*8;
2117 }
2118 }
2119
2120
2121 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
2122 {
2123 struct amifb_par *par = (struct amifb_par *)info->par;
2124 int x2, y2;
2125 unsigned long *dst;
2126 int dst_idx;
2127 const char *src;
2128 u32 dx, dy, width, height, pitch;
2129
2130 /*
2131 * We could use hardware clipping but on many cards you get around
2132 * hardware clipping by writing to framebuffer directly like we are
2133 * doing here.
2134 */
2135 x2 = image->dx + image->width;
2136 y2 = image->dy + image->height;
2137 dx = image->dx;
2138 dy = image->dy;
2139 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2140 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2141 width = x2 - dx;
2142 height = y2 - dy;
2143
2144 if (image->depth == 1) {
2145 dst = (unsigned long *)
2146 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2147 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2148 dst_idx += dy*par->next_line*8+dx;
2149 src = image->data;
2150 pitch = (image->width+7)/8;
2151 while (height--) {
2152 expand_one_line(info->var.bits_per_pixel,
2153 par->next_plane, dst, dst_idx, width,
2154 src, image->bg_color,
2155 image->fg_color);
2156 dst_idx += par->next_line*8;
2157 src += pitch;
2158 }
2159 } else {
2160 c2p(info->screen_base, image->data, dx, dy, width, height,
2161 par->next_line, par->next_plane, image->width,
2162 info->var.bits_per_pixel);
2163 }
2164 }
2165
2166
2167 /*
2168 * Amiga Frame Buffer Specific ioctls
2169 */
2170
2171 static int amifb_ioctl(struct fb_info *info,
2172 unsigned int cmd, unsigned long arg)
2173 {
2174 union {
2175 struct fb_fix_cursorinfo fix;
2176 struct fb_var_cursorinfo var;
2177 struct fb_cursorstate state;
2178 } crsr;
2179 void __user *argp = (void __user *)arg;
2180 int i;
2181
2182 switch (cmd) {
2183 case FBIOGET_FCURSORINFO:
2184 i = ami_get_fix_cursorinfo(&crsr.fix);
2185 if (i)
2186 return i;
2187 return copy_to_user(argp, &crsr.fix,
2188 sizeof(crsr.fix)) ? -EFAULT : 0;
2189
2190 case FBIOGET_VCURSORINFO:
2191 i = ami_get_var_cursorinfo(&crsr.var,
2192 ((struct fb_var_cursorinfo __user *)arg)->data);
2193 if (i)
2194 return i;
2195 return copy_to_user(argp, &crsr.var,
2196 sizeof(crsr.var)) ? -EFAULT : 0;
2197
2198 case FBIOPUT_VCURSORINFO:
2199 if (copy_from_user(&crsr.var, argp, sizeof(crsr.var)))
2200 return -EFAULT;
2201 return ami_set_var_cursorinfo(&crsr.var,
2202 ((struct fb_var_cursorinfo __user *)arg)->data);
2203
2204 case FBIOGET_CURSORSTATE:
2205 i = ami_get_cursorstate(&crsr.state);
2206 if (i)
2207 return i;
2208 return copy_to_user(argp, &crsr.state,
2209 sizeof(crsr.state)) ? -EFAULT : 0;
2210
2211 case FBIOPUT_CURSORSTATE:
2212 if (copy_from_user(&crsr.state, argp,
2213 sizeof(crsr.state)))
2214 return -EFAULT;
2215 return ami_set_cursorstate(&crsr.state);
2216 }
2217 return -EINVAL;
2218 }
2219
2220
2221 /*
2222 * Allocate, Clear and Align a Block of Chip Memory
2223 */
2224
2225 static u_long unaligned_chipptr = 0;
2226
2227 static inline u_long __init chipalloc(u_long size)
2228 {
2229 size += PAGE_SIZE-1;
2230 if (!(unaligned_chipptr = (u_long)amiga_chip_alloc(size,
2231 "amifb [RAM]")))
2232 panic("No Chip RAM for frame buffer");
2233 memset((void *)unaligned_chipptr, 0, size);
2234 return PAGE_ALIGN(unaligned_chipptr);
2235 }
2236
2237 static inline void chipfree(void)
2238 {
2239 if (unaligned_chipptr)
2240 amiga_chip_free((void *)unaligned_chipptr);
2241 }
2242
2243
2244 /*
2245 * Initialisation
2246 */
2247
2248 int __init amifb_init(void)
2249 {
2250 int tag, i, err = 0;
2251 u_long chipptr;
2252 u_int defmode;
2253
2254 #ifndef MODULE
2255 char *option = NULL;
2256
2257 if (fb_get_options("amifb", &option)) {
2258 amifb_video_off();
2259 return -ENODEV;
2260 }
2261 amifb_setup(option);
2262 #endif
2263 if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_VIDEO))
2264 return -ENXIO;
2265
2266 /*
2267 * We request all registers starting from bplpt[0]
2268 */
2269 if (!request_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120,
2270 "amifb [Denise/Lisa]"))
2271 return -EBUSY;
2272
2273 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2274
2275 switch (amiga_chipset) {
2276 #ifdef CONFIG_FB_AMIGA_OCS
2277 case CS_OCS:
2278 strcat(fb_info.fix.id, "OCS");
2279 default_chipset:
2280 chipset = TAG_OCS;
2281 maxdepth[TAG_SHRES] = 0; /* OCS means no SHRES */
2282 maxdepth[TAG_HIRES] = 4;
2283 maxdepth[TAG_LORES] = 6;
2284 maxfmode = TAG_FMODE_1;
2285 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2286 : DEFMODE_NTSC;
2287 fb_info.fix.smem_len = VIDEOMEMSIZE_OCS;
2288 break;
2289 #endif /* CONFIG_FB_AMIGA_OCS */
2290
2291 #ifdef CONFIG_FB_AMIGA_ECS
2292 case CS_ECS:
2293 strcat(fb_info.fix.id, "ECS");
2294 chipset = TAG_ECS;
2295 maxdepth[TAG_SHRES] = 2;
2296 maxdepth[TAG_HIRES] = 4;
2297 maxdepth[TAG_LORES] = 6;
2298 maxfmode = TAG_FMODE_1;
2299 if (AMIGAHW_PRESENT(AMBER_FF))
2300 defmode = amiga_vblank == 50 ? DEFMODE_AMBER_PAL
2301 : DEFMODE_AMBER_NTSC;
2302 else
2303 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2304 : DEFMODE_NTSC;
2305 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2306 VIDEOMEMSIZE_ECS_1M)
2307 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_2M;
2308 else
2309 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_1M;
2310 break;
2311 #endif /* CONFIG_FB_AMIGA_ECS */
2312
2313 #ifdef CONFIG_FB_AMIGA_AGA
2314 case CS_AGA:
2315 strcat(fb_info.fix.id, "AGA");
2316 chipset = TAG_AGA;
2317 maxdepth[TAG_SHRES] = 8;
2318 maxdepth[TAG_HIRES] = 8;
2319 maxdepth[TAG_LORES] = 8;
2320 maxfmode = TAG_FMODE_4;
2321 defmode = DEFMODE_AGA;
2322 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2323 VIDEOMEMSIZE_AGA_1M)
2324 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_2M;
2325 else
2326 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_1M;
2327 break;
2328 #endif /* CONFIG_FB_AMIGA_AGA */
2329
2330 default:
2331 #ifdef CONFIG_FB_AMIGA_OCS
2332 printk("Unknown graphics chipset, defaulting to OCS\n");
2333 strcat(fb_info.fix.id, "Unknown");
2334 goto default_chipset;
2335 #else /* CONFIG_FB_AMIGA_OCS */
2336 err = -ENXIO;
2337 goto amifb_error;
2338 #endif /* CONFIG_FB_AMIGA_OCS */
2339 break;
2340 }
2341
2342 /*
2343 * Calculate the Pixel Clock Values for this Machine
2344 */
2345
2346 {
2347 u_long tmp = DIVUL(200000000000ULL, amiga_eclock);
2348
2349 pixclock[TAG_SHRES] = (tmp + 4) / 8; /* SHRES: 35 ns / 28 MHz */
2350 pixclock[TAG_HIRES] = (tmp + 2) / 4; /* HIRES: 70 ns / 14 MHz */
2351 pixclock[TAG_LORES] = (tmp + 1) / 2; /* LORES: 140 ns / 7 MHz */
2352 }
2353
2354 /*
2355 * Replace the Tag Values with the Real Pixel Clock Values
2356 */
2357
2358 for (i = 0; i < NUM_TOTAL_MODES; i++) {
2359 struct fb_videomode *mode = &ami_modedb[i];
2360 tag = mode->pixclock;
2361 if (tag == TAG_SHRES || tag == TAG_HIRES || tag == TAG_LORES) {
2362 mode->pixclock = pixclock[tag];
2363 }
2364 }
2365
2366 /*
2367 * These monitor specs are for a typical Amiga monitor (e.g. A1960)
2368 */
2369 if (fb_info.monspecs.hfmin == 0) {
2370 fb_info.monspecs.hfmin = 15000;
2371 fb_info.monspecs.hfmax = 38000;
2372 fb_info.monspecs.vfmin = 49;
2373 fb_info.monspecs.vfmax = 90;
2374 }
2375
2376 fb_info.fbops = &amifb_ops;
2377 fb_info.par = &currentpar;
2378 fb_info.flags = FBINFO_DEFAULT;
2379
2380 if (!fb_find_mode(&fb_info.var, &fb_info, mode_option, ami_modedb,
2381 NUM_TOTAL_MODES, &ami_modedb[defmode], 4)) {
2382 err = -EINVAL;
2383 goto amifb_error;
2384 }
2385
2386 round_down_bpp = 0;
2387 chipptr = chipalloc(fb_info.fix.smem_len+
2388 SPRITEMEMSIZE+
2389 DUMMYSPRITEMEMSIZE+
2390 COPINITSIZE+
2391 4*COPLISTSIZE);
2392
2393 assignchunk(videomemory, u_long, chipptr, fb_info.fix.smem_len);
2394 assignchunk(spritememory, u_long, chipptr, SPRITEMEMSIZE);
2395 assignchunk(dummysprite, u_short *, chipptr, DUMMYSPRITEMEMSIZE);
2396 assignchunk(copdisplay.init, copins *, chipptr, COPINITSIZE);
2397 assignchunk(copdisplay.list[0][0], copins *, chipptr, COPLISTSIZE);
2398 assignchunk(copdisplay.list[0][1], copins *, chipptr, COPLISTSIZE);
2399 assignchunk(copdisplay.list[1][0], copins *, chipptr, COPLISTSIZE);
2400 assignchunk(copdisplay.list[1][1], copins *, chipptr, COPLISTSIZE);
2401
2402 /*
2403 * access the videomem with writethrough cache
2404 */
2405 fb_info.fix.smem_start = (u_long)ZTWO_PADDR(videomemory);
2406 videomemory = (u_long)ioremap_writethrough(fb_info.fix.smem_start,
2407 fb_info.fix.smem_len);
2408 if (!videomemory) {
2409 printk("amifb: WARNING! unable to map videomem cached writethrough\n");
2410 fb_info.screen_base = (char *)ZTWO_VADDR(fb_info.fix.smem_start);
2411 } else
2412 fb_info.screen_base = (char *)videomemory;
2413
2414 memset(dummysprite, 0, DUMMYSPRITEMEMSIZE);
2415
2416 /*
2417 * Enable Display DMA
2418 */
2419
2420 custom.dmacon = DMAF_SETCLR | DMAF_MASTER | DMAF_RASTER | DMAF_COPPER |
2421 DMAF_BLITTER | DMAF_SPRITE;
2422
2423 /*
2424 * Make sure the Copper has something to do
2425 */
2426
2427 ami_init_copper();
2428
2429 if (request_irq(IRQ_AMIGA_COPPER, amifb_interrupt, 0,
2430 "fb vertb handler", &currentpar)) {
2431 err = -EBUSY;
2432 goto amifb_error;
2433 }
2434
2435 fb_alloc_cmap(&fb_info.cmap, 1<<fb_info.var.bits_per_pixel, 0);
2436
2437 if (register_framebuffer(&fb_info) < 0) {
2438 err = -EINVAL;
2439 goto amifb_error;
2440 }
2441
2442 printk("fb%d: %s frame buffer device, using %dK of video memory\n",
2443 fb_info.node, fb_info.fix.id, fb_info.fix.smem_len>>10);
2444
2445 return 0;
2446
2447 amifb_error:
2448 amifb_deinit();
2449 return err;
2450 }
2451
2452 static void amifb_deinit(void)
2453 {
2454 fb_dealloc_cmap(&fb_info.cmap);
2455 chipfree();
2456 if (videomemory)
2457 iounmap((void*)videomemory);
2458 release_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120);
2459 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2460 }
2461
2462
2463 /*
2464 * Blank the display.
2465 */
2466
2467 static int amifb_blank(int blank, struct fb_info *info)
2468 {
2469 do_blank = blank ? blank : -1;
2470
2471 return 0;
2472 }
2473
2474 /*
2475 * Flash the cursor (called by VBlank interrupt)
2476 */
2477
2478 static int flash_cursor(void)
2479 {
2480 static int cursorcount = 1;
2481
2482 if (cursormode == FB_CURSOR_FLASH) {
2483 if (!--cursorcount) {
2484 cursorstate = -cursorstate;
2485 cursorcount = cursorrate;
2486 if (!is_blanked)
2487 return 1;
2488 }
2489 }
2490 return 0;
2491 }
2492
2493 /*
2494 * VBlank Display Interrupt
2495 */
2496
2497 static irqreturn_t amifb_interrupt(int irq, void *dev_id)
2498 {
2499 if (do_vmode_pan || do_vmode_full)
2500 ami_update_display();
2501
2502 if (do_vmode_full)
2503 ami_init_display();
2504
2505 if (do_vmode_pan) {
2506 flash_cursor();
2507 ami_rebuild_copper();
2508 do_cursor = do_vmode_pan = 0;
2509 } else if (do_cursor) {
2510 flash_cursor();
2511 ami_set_sprite();
2512 do_cursor = 0;
2513 } else {
2514 if (flash_cursor())
2515 ami_set_sprite();
2516 }
2517
2518 if (do_blank) {
2519 ami_do_blank();
2520 do_blank = 0;
2521 }
2522
2523 if (do_vmode_full) {
2524 ami_reinit_copper();
2525 do_vmode_full = 0;
2526 }
2527 return IRQ_HANDLED;
2528 }
2529
2530 /* --------------------------- Hardware routines --------------------------- */
2531
2532 /*
2533 * Get the video params out of `var'. If a value doesn't fit, round
2534 * it up, if it's too big, return -EINVAL.
2535 */
2536
2537 static int ami_decode_var(struct fb_var_screeninfo *var,
2538 struct amifb_par *par)
2539 {
2540 u_short clk_shift, line_shift;
2541 u_long maxfetchstop, fstrt, fsize, fconst, xres_n, yres_n;
2542 u_int htotal, vtotal;
2543
2544 /*
2545 * Find a matching Pixel Clock
2546 */
2547
2548 for (clk_shift = TAG_SHRES; clk_shift <= TAG_LORES; clk_shift++)
2549 if (var->pixclock <= pixclock[clk_shift])
2550 break;
2551 if (clk_shift > TAG_LORES) {
2552 DPRINTK("pixclock too high\n");
2553 return -EINVAL;
2554 }
2555 par->clk_shift = clk_shift;
2556
2557 /*
2558 * Check the Geometry Values
2559 */
2560
2561 if ((par->xres = var->xres) < 64)
2562 par->xres = 64;
2563 if ((par->yres = var->yres) < 64)
2564 par->yres = 64;
2565 if ((par->vxres = var->xres_virtual) < par->xres)
2566 par->vxres = par->xres;
2567 if ((par->vyres = var->yres_virtual) < par->yres)
2568 par->vyres = par->yres;
2569
2570 par->bpp = var->bits_per_pixel;
2571 if (!var->nonstd) {
2572 if (par->bpp < 1)
2573 par->bpp = 1;
2574 if (par->bpp > maxdepth[clk_shift]) {
2575 if (round_down_bpp && maxdepth[clk_shift])
2576 par->bpp = maxdepth[clk_shift];
2577 else {
2578 DPRINTK("invalid bpp\n");
2579 return -EINVAL;
2580 }
2581 }
2582 } else if (var->nonstd == FB_NONSTD_HAM) {
2583 if (par->bpp < 6)
2584 par->bpp = 6;
2585 if (par->bpp != 6) {
2586 if (par->bpp < 8)
2587 par->bpp = 8;
2588 if (par->bpp != 8 || !IS_AGA) {
2589 DPRINTK("invalid bpp for ham mode\n");
2590 return -EINVAL;
2591 }
2592 }
2593 } else {
2594 DPRINTK("unknown nonstd mode\n");
2595 return -EINVAL;
2596 }
2597
2598 /*
2599 * FB_VMODE_SMOOTH_XPAN will be cleared, if one of the folloing
2600 * checks failed and smooth scrolling is not possible
2601 */
2602
2603 par->vmode = var->vmode | FB_VMODE_SMOOTH_XPAN;
2604 switch (par->vmode & FB_VMODE_MASK) {
2605 case FB_VMODE_INTERLACED:
2606 line_shift = 0;
2607 break;
2608 case FB_VMODE_NONINTERLACED:
2609 line_shift = 1;
2610 break;
2611 case FB_VMODE_DOUBLE:
2612 if (!IS_AGA) {
2613 DPRINTK("double mode only possible with aga\n");
2614 return -EINVAL;
2615 }
2616 line_shift = 2;
2617 break;
2618 default:
2619 DPRINTK("unknown video mode\n");
2620 return -EINVAL;
2621 break;
2622 }
2623 par->line_shift = line_shift;
2624
2625 /*
2626 * Vertical and Horizontal Timings
2627 */
2628
2629 xres_n = par->xres<<clk_shift;
2630 yres_n = par->yres<<line_shift;
2631 par->htotal = down8((var->left_margin+par->xres+var->right_margin+var->hsync_len)<<clk_shift);
2632 par->vtotal = down2(((var->upper_margin+par->yres+var->lower_margin+var->vsync_len)<<line_shift)+1);
2633
2634 if (IS_AGA)
2635 par->bplcon3 = sprpixmode[clk_shift];
2636 else
2637 par->bplcon3 = 0;
2638 if (var->sync & FB_SYNC_BROADCAST) {
2639 par->diwstop_h = par->htotal-((var->right_margin-var->hsync_len)<<clk_shift);
2640 if (IS_AGA)
2641 par->diwstop_h += mod4(var->hsync_len);
2642 else
2643 par->diwstop_h = down4(par->diwstop_h);
2644
2645 par->diwstrt_h = par->diwstop_h - xres_n;
2646 par->diwstop_v = par->vtotal-((var->lower_margin-var->vsync_len)<<line_shift);
2647 par->diwstrt_v = par->diwstop_v - yres_n;
2648 if (par->diwstop_h >= par->htotal+8) {
2649 DPRINTK("invalid diwstop_h\n");
2650 return -EINVAL;
2651 }
2652 if (par->diwstop_v > par->vtotal) {
2653 DPRINTK("invalid diwstop_v\n");
2654 return -EINVAL;
2655 }
2656
2657 if (!IS_OCS) {
2658 /* Initialize sync with some reasonable values for pwrsave */
2659 par->hsstrt = 160;
2660 par->hsstop = 320;
2661 par->vsstrt = 30;
2662 par->vsstop = 34;
2663 } else {
2664 par->hsstrt = 0;
2665 par->hsstop = 0;
2666 par->vsstrt = 0;
2667 par->vsstop = 0;
2668 }
2669 if (par->vtotal > (PAL_VTOTAL+NTSC_VTOTAL)/2) {
2670 /* PAL video mode */
2671 if (par->htotal != PAL_HTOTAL) {
2672 DPRINTK("htotal invalid for pal\n");
2673 return -EINVAL;
2674 }
2675 if (par->diwstrt_h < PAL_DIWSTRT_H) {
2676 DPRINTK("diwstrt_h too low for pal\n");
2677 return -EINVAL;
2678 }
2679 if (par->diwstrt_v < PAL_DIWSTRT_V) {
2680 DPRINTK("diwstrt_v too low for pal\n");
2681 return -EINVAL;
2682 }
2683 htotal = PAL_HTOTAL>>clk_shift;
2684 vtotal = PAL_VTOTAL>>1;
2685 if (!IS_OCS) {
2686 par->beamcon0 = BMC0_PAL;
2687 par->bplcon3 |= BPC3_BRDRBLNK;
2688 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2689 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2690 par->beamcon0 = BMC0_PAL;
2691 par->hsstop = 1;
2692 } else if (amiga_vblank != 50) {
2693 DPRINTK("pal not supported by this chipset\n");
2694 return -EINVAL;
2695 }
2696 } else {
2697 /* NTSC video mode
2698 * In the AGA chipset seems to be hardware bug with BPC3_BRDRBLNK
2699 * and NTSC activated, so than better let diwstop_h <= 1812
2700 */
2701 if (par->htotal != NTSC_HTOTAL) {
2702 DPRINTK("htotal invalid for ntsc\n");
2703 return -EINVAL;
2704 }
2705 if (par->diwstrt_h < NTSC_DIWSTRT_H) {
2706 DPRINTK("diwstrt_h too low for ntsc\n");
2707 return -EINVAL;
2708 }
2709 if (par->diwstrt_v < NTSC_DIWSTRT_V) {
2710 DPRINTK("diwstrt_v too low for ntsc\n");
2711 return -EINVAL;
2712 }
2713 htotal = NTSC_HTOTAL>>clk_shift;
2714 vtotal = NTSC_VTOTAL>>1;
2715 if (!IS_OCS) {
2716 par->beamcon0 = 0;
2717 par->bplcon3 |= BPC3_BRDRBLNK;
2718 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2719 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2720 par->beamcon0 = 0;
2721 par->hsstop = 1;
2722 } else if (amiga_vblank != 60) {
2723 DPRINTK("ntsc not supported by this chipset\n");
2724 return -EINVAL;
2725 }
2726 }
2727 if (IS_OCS) {
2728 if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
2729 par->diwstrt_v >= 512 || par->diwstop_v < 256) {
2730 DPRINTK("invalid position for display on ocs\n");
2731 return -EINVAL;
2732 }
2733 }
2734 } else if (!IS_OCS) {
2735 /* Programmable video mode */
2736 par->hsstrt = var->right_margin<<clk_shift;
2737 par->hsstop = (var->right_margin+var->hsync_len)<<clk_shift;
2738 par->diwstop_h = par->htotal - mod8(par->hsstrt) + 8 - (1 << clk_shift);
2739 if (!IS_AGA)
2740 par->diwstop_h = down4(par->diwstop_h) - 16;
2741 par->diwstrt_h = par->diwstop_h - xres_n;
2742 par->hbstop = par->diwstrt_h + 4;
2743 par->hbstrt = par->diwstop_h + 4;
2744 if (par->hbstrt >= par->htotal + 8)
2745 par->hbstrt -= par->htotal;
2746 par->hcenter = par->hsstrt + (par->htotal >> 1);
2747 par->vsstrt = var->lower_margin<<line_shift;
2748 par->vsstop = (var->lower_margin+var->vsync_len)<<line_shift;
2749 par->diwstop_v = par->vtotal;
2750 if ((par->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
2751 par->diwstop_v -= 2;
2752 par->diwstrt_v = par->diwstop_v - yres_n;
2753 par->vbstop = par->diwstrt_v - 2;
2754 par->vbstrt = par->diwstop_v - 2;
2755 if (par->vtotal > 2048) {
2756 DPRINTK("vtotal too high\n");
2757 return -EINVAL;
2758 }
2759 if (par->htotal > 2048) {
2760 DPRINTK("htotal too high\n");
2761 return -EINVAL;
2762 }
2763 par->bplcon3 |= BPC3_EXTBLKEN;
2764 par->beamcon0 = BMC0_HARDDIS | BMC0_VARVBEN | BMC0_LOLDIS |
2765 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARBEAMEN |
2766 BMC0_PAL | BMC0_VARCSYEN;
2767 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
2768 par->beamcon0 |= BMC0_HSYTRUE;
2769 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
2770 par->beamcon0 |= BMC0_VSYTRUE;
2771 if (var->sync & FB_SYNC_COMP_HIGH_ACT)
2772 par->beamcon0 |= BMC0_CSYTRUE;
2773 htotal = par->htotal>>clk_shift;
2774 vtotal = par->vtotal>>1;
2775 } else {
2776 DPRINTK("only broadcast modes possible for ocs\n");
2777 return -EINVAL;
2778 }
2779
2780 /*
2781 * Checking the DMA timing
2782 */
2783
2784 fconst = 16<<maxfmode<<clk_shift;
2785
2786 /*
2787 * smallest window start value without turn off other dma cycles
2788 * than sprite1-7, unless you change min_fstrt
2789 */
2790
2791
2792 fsize = ((maxfmode+clk_shift <= 1) ? fconst : 64);
2793 fstrt = downx(fconst, par->diwstrt_h-4) - fsize;
2794 if (fstrt < min_fstrt) {
2795 DPRINTK("fetch start too low\n");
2796 return -EINVAL;
2797 }
2798
2799 /*
2800 * smallest window start value where smooth scrolling is possible
2801 */
2802
2803 fstrt = downx(fconst, par->diwstrt_h-fconst+(1<<clk_shift)-4) - fsize;
2804 if (fstrt < min_fstrt)
2805 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2806
2807 maxfetchstop = down16(par->htotal - 80);
2808
2809 fstrt = downx(fconst, par->diwstrt_h-4) - 64 - fconst;
2810 fsize = upx(fconst, xres_n + modx(fconst, downx(1<<clk_shift, par->diwstrt_h-4)));
2811 if (fstrt + fsize > maxfetchstop)
2812 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2813
2814 fsize = upx(fconst, xres_n);
2815 if (fstrt + fsize > maxfetchstop) {
2816 DPRINTK("fetch stop too high\n");
2817 return -EINVAL;
2818 }
2819
2820 if (maxfmode + clk_shift <= 1) {
2821 fsize = up64(xres_n + fconst - 1);
2822 if (min_fstrt + fsize - 64 > maxfetchstop)
2823 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2824
2825 fsize = up64(xres_n);
2826 if (min_fstrt + fsize - 64 > maxfetchstop) {
2827 DPRINTK("fetch size too high\n");
2828 return -EINVAL;
2829 }
2830
2831 fsize -= 64;
2832 } else
2833 fsize -= fconst;
2834
2835 /*
2836 * Check if there is enough time to update the bitplane pointers for ywrap
2837 */
2838
2839 if (par->htotal-fsize-64 < par->bpp*64)
2840 par->vmode &= ~FB_VMODE_YWRAP;
2841
2842 /*
2843 * Bitplane calculations and check the Memory Requirements
2844 */
2845
2846 if (amifb_ilbm) {
2847 par->next_plane = div8(upx(16<<maxfmode, par->vxres));
2848 par->next_line = par->bpp*par->next_plane;
2849 if (par->next_line * par->vyres > fb_info.fix.smem_len) {
2850 DPRINTK("too few video mem\n");
2851 return -EINVAL;
2852 }
2853 } else {
2854 par->next_line = div8(upx(16<<maxfmode, par->vxres));
2855 par->next_plane = par->vyres*par->next_line;
2856 if (par->next_plane * par->bpp > fb_info.fix.smem_len) {
2857 DPRINTK("too few video mem\n");
2858 return -EINVAL;
2859 }
2860 }
2861
2862 /*
2863 * Hardware Register Values
2864 */
2865
2866 par->bplcon0 = BPC0_COLOR | bplpixmode[clk_shift];
2867 if (!IS_OCS)
2868 par->bplcon0 |= BPC0_ECSENA;
2869 if (par->bpp == 8)
2870 par->bplcon0 |= BPC0_BPU3;
2871 else
2872 par->bplcon0 |= par->bpp<<12;
2873 if (var->nonstd == FB_NONSTD_HAM)
2874 par->bplcon0 |= BPC0_HAM;
2875 if (var->sync & FB_SYNC_EXT)
2876 par->bplcon0 |= BPC0_ERSY;
2877
2878 if (IS_AGA)
2879 par->fmode = bplfetchmode[maxfmode];
2880
2881 switch (par->vmode & FB_VMODE_MASK) {
2882 case FB_VMODE_INTERLACED:
2883 par->bplcon0 |= BPC0_LACE;
2884 break;
2885 case FB_VMODE_DOUBLE:
2886 if (IS_AGA)
2887 par->fmode |= FMODE_SSCAN2 | FMODE_BSCAN2;
2888 break;
2889 }
2890
2891 if (!((par->vmode ^ var->vmode) & FB_VMODE_YWRAP)) {
2892 par->xoffset = var->xoffset;
2893 par->yoffset = var->yoffset;
2894 if (par->vmode & FB_VMODE_YWRAP) {
2895 if (par->xoffset || par->yoffset < 0 || par->yoffset >= par->vyres)
2896 par->xoffset = par->yoffset = 0;
2897 } else {
2898 if (par->xoffset < 0 || par->xoffset > upx(16<<maxfmode, par->vxres-par->xres) ||
2899 par->yoffset < 0 || par->yoffset > par->vyres-par->yres)
2900 par->xoffset = par->yoffset = 0;
2901 }
2902 } else
2903 par->xoffset = par->yoffset = 0;
2904
2905 par->crsr.crsr_x = par->crsr.crsr_y = 0;
2906 par->crsr.spot_x = par->crsr.spot_y = 0;
2907 par->crsr.height = par->crsr.width = 0;
2908
2909 return 0;
2910 }
2911
2912 /*
2913 * Fill the `var' structure based on the values in `par' and maybe
2914 * other values read out of the hardware.
2915 */
2916
2917 static int ami_encode_var(struct fb_var_screeninfo *var,
2918 struct amifb_par *par)
2919 {
2920 u_short clk_shift, line_shift;
2921
2922 memset(var, 0, sizeof(struct fb_var_screeninfo));
2923
2924 clk_shift = par->clk_shift;
2925 line_shift = par->line_shift;
2926
2927 var->xres = par->xres;
2928 var->yres = par->yres;
2929 var->xres_virtual = par->vxres;
2930 var->yres_virtual = par->vyres;
2931 var->xoffset = par->xoffset;
2932 var->yoffset = par->yoffset;
2933
2934 var->bits_per_pixel = par->bpp;
2935 var->grayscale = 0;
2936
2937 var->red.offset = 0;
2938 var->red.msb_right = 0;
2939 var->red.length = par->bpp;
2940 if (par->bplcon0 & BPC0_HAM)
2941 var->red.length -= 2;
2942 var->blue = var->green = var->red;
2943 var->transp.offset = 0;
2944 var->transp.length = 0;
2945 var->transp.msb_right = 0;
2946
2947 if (par->bplcon0 & BPC0_HAM)
2948 var->nonstd = FB_NONSTD_HAM;
2949 else
2950 var->nonstd = 0;
2951 var->activate = 0;
2952
2953 var->height = -1;
2954 var->width = -1;
2955
2956 var->pixclock = pixclock[clk_shift];
2957
2958 if (IS_AGA && par->fmode & FMODE_BSCAN2)
2959 var->vmode = FB_VMODE_DOUBLE;
2960 else if (par->bplcon0 & BPC0_LACE)
2961 var->vmode = FB_VMODE_INTERLACED;
2962 else
2963 var->vmode = FB_VMODE_NONINTERLACED;
2964
2965 if (!IS_OCS && par->beamcon0 & BMC0_VARBEAMEN) {
2966 var->hsync_len = (par->hsstop-par->hsstrt)>>clk_shift;
2967 var->right_margin = par->hsstrt>>clk_shift;
2968 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2969 var->vsync_len = (par->vsstop-par->vsstrt)>>line_shift;
2970 var->lower_margin = par->vsstrt>>line_shift;
2971 var->upper_margin = (par->vtotal>>line_shift) - var->yres - var->lower_margin - var->vsync_len;
2972 var->sync = 0;
2973 if (par->beamcon0 & BMC0_HSYTRUE)
2974 var->sync |= FB_SYNC_HOR_HIGH_ACT;
2975 if (par->beamcon0 & BMC0_VSYTRUE)
2976 var->sync |= FB_SYNC_VERT_HIGH_ACT;
2977 if (par->beamcon0 & BMC0_CSYTRUE)
2978 var->sync |= FB_SYNC_COMP_HIGH_ACT;
2979 } else {
2980 var->sync = FB_SYNC_BROADCAST;
2981 var->hsync_len = (152>>clk_shift) + mod4(par->diwstop_h);
2982 var->right_margin = ((par->htotal - down4(par->diwstop_h))>>clk_shift) + var->hsync_len;
2983 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2984 var->vsync_len = 4>>line_shift;
2985 var->lower_margin = ((par->vtotal - par->diwstop_v)>>line_shift) + var->vsync_len;
2986 var->upper_margin = (((par->vtotal - 2)>>line_shift) + 1) - var->yres -
2987 var->lower_margin - var->vsync_len;
2988 }
2989
2990 if (par->bplcon0 & BPC0_ERSY)
2991 var->sync |= FB_SYNC_EXT;
2992 if (par->vmode & FB_VMODE_YWRAP)
2993 var->vmode |= FB_VMODE_YWRAP;
2994
2995 return 0;
2996 }
2997
2998
2999 /*
3000 * Pan or Wrap the Display
3001 *
3002 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
3003 * in `var'.
3004 */
3005
3006 static void ami_pan_var(struct fb_var_screeninfo *var)
3007 {
3008 struct amifb_par *par = &currentpar;
3009
3010 par->xoffset = var->xoffset;
3011 par->yoffset = var->yoffset;
3012 if (var->vmode & FB_VMODE_YWRAP)
3013 par->vmode |= FB_VMODE_YWRAP;
3014 else
3015 par->vmode &= ~FB_VMODE_YWRAP;
3016
3017 do_vmode_pan = 0;
3018 ami_update_par();
3019 do_vmode_pan = 1;
3020 }
3021
3022 /*
3023 * Update hardware
3024 */
3025
3026 static int ami_update_par(void)
3027 {
3028 struct amifb_par *par = &currentpar;
3029 short clk_shift, vshift, fstrt, fsize, fstop, fconst, shift, move, mod;
3030
3031 clk_shift = par->clk_shift;
3032
3033 if (!(par->vmode & FB_VMODE_SMOOTH_XPAN))
3034 par->xoffset = upx(16<<maxfmode, par->xoffset);
3035
3036 fconst = 16<<maxfmode<<clk_shift;
3037 vshift = modx(16<<maxfmode, par->xoffset);
3038 fstrt = par->diwstrt_h - (vshift<<clk_shift) - 4;
3039 fsize = (par->xres+vshift)<<clk_shift;
3040 shift = modx(fconst, fstrt);
3041 move = downx(2<<maxfmode, div8(par->xoffset));
3042 if (maxfmode + clk_shift > 1) {
3043 fstrt = downx(fconst, fstrt) - 64;
3044 fsize = upx(fconst, fsize);
3045 fstop = fstrt + fsize - fconst;
3046 } else {
3047 mod = fstrt = downx(fconst, fstrt) - fconst;
3048 fstop = fstrt + upx(fconst, fsize) - 64;
3049 fsize = up64(fsize);
3050 fstrt = fstop - fsize + 64;
3051 if (fstrt < min_fstrt) {
3052 fstop += min_fstrt - fstrt;
3053 fstrt = min_fstrt;
3054 }
3055 move = move - div8((mod-fstrt)>>clk_shift);
3056 }
3057 mod = par->next_line - div8(fsize>>clk_shift);
3058 par->ddfstrt = fstrt;
3059 par->ddfstop = fstop;
3060 par->bplcon1 = hscroll2hw(shift);
3061 par->bpl2mod = mod;
3062 if (par->bplcon0 & BPC0_LACE)
3063 par->bpl2mod += par->next_line;
3064 if (IS_AGA && (par->fmode & FMODE_BSCAN2))
3065 par->bpl1mod = -div8(fsize>>clk_shift);
3066 else
3067 par->bpl1mod = par->bpl2mod;
3068
3069 if (par->yoffset) {
3070 par->bplpt0 = fb_info.fix.smem_start + par->next_line*par->yoffset + move;
3071 if (par->vmode & FB_VMODE_YWRAP) {
3072 if (par->yoffset > par->vyres-par->yres) {
3073 par->bplpt0wrap = fb_info.fix.smem_start + move;
3074 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v+par->vyres-par->yoffset))
3075 par->bplpt0wrap += par->next_line;
3076 }
3077 }
3078 } else
3079 par->bplpt0 = fb_info.fix.smem_start + move;
3080
3081 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v))
3082 par->bplpt0 += par->next_line;
3083
3084 return 0;
3085 }
3086
3087
3088 /*
3089 * Set a single color register. The values supplied are already
3090 * rounded down to the hardware's capabilities (according to the
3091 * entries in the var structure). Return != 0 for invalid regno.
3092 */
3093
3094 static int amifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
3095 u_int transp, struct fb_info *info)
3096 {
3097 if (IS_AGA) {
3098 if (regno > 255)
3099 return 1;
3100 } else if (currentpar.bplcon0 & BPC0_SHRES) {
3101 if (regno > 3)
3102 return 1;
3103 } else {
3104 if (regno > 31)
3105 return 1;
3106 }
3107 red >>= 8;
3108 green >>= 8;
3109 blue >>= 8;
3110 if (!regno) {
3111 red0 = red;
3112 green0 = green;
3113 blue0 = blue;
3114 }
3115
3116 /*
3117 * Update the corresponding Hardware Color Register, unless it's Color
3118 * Register 0 and the screen is blanked.
3119 *
3120 * VBlank is switched off to protect bplcon3 or ecs_palette[] from
3121 * being changed by ami_do_blank() during the VBlank.
3122 */
3123
3124 if (regno || !is_blanked) {
3125 #if defined(CONFIG_FB_AMIGA_AGA)
3126 if (IS_AGA) {
3127 u_short bplcon3 = currentpar.bplcon3;
3128 VBlankOff();
3129 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000);
3130 custom.color[regno&31] = rgb2hw8_high(red, green, blue);
3131 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000) | BPC3_LOCT;
3132 custom.color[regno&31] = rgb2hw8_low(red, green, blue);
3133 custom.bplcon3 = bplcon3;
3134 VBlankOn();
3135 } else
3136 #endif
3137 #if defined(CONFIG_FB_AMIGA_ECS)
3138 if (currentpar.bplcon0 & BPC0_SHRES) {
3139 u_short color, mask;
3140 int i;
3141
3142 mask = 0x3333;
3143 color = rgb2hw2(red, green, blue);
3144 VBlankOff();
3145 for (i = regno+12; i >= (int)regno; i -= 4)
3146 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3147 mask <<=2; color >>= 2;
3148 regno = down16(regno)+mul4(mod4(regno));
3149 for (i = regno+3; i >= (int)regno; i--)
3150 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3151 VBlankOn();
3152 } else
3153 #endif
3154 custom.color[regno] = rgb2hw4(red, green, blue);
3155 }
3156 return 0;
3157 }
3158
3159 static void ami_update_display(void)
3160 {
3161 struct amifb_par *par = &currentpar;
3162
3163 custom.bplcon1 = par->bplcon1;
3164 custom.bpl1mod = par->bpl1mod;
3165 custom.bpl2mod = par->bpl2mod;
3166 custom.ddfstrt = ddfstrt2hw(par->ddfstrt);
3167 custom.ddfstop = ddfstop2hw(par->ddfstop);
3168 }
3169
3170 /*
3171 * Change the video mode (called by VBlank interrupt)
3172 */
3173
3174 static void ami_init_display(void)
3175 {
3176 struct amifb_par *par = &currentpar;
3177 int i;
3178
3179 custom.bplcon0 = par->bplcon0 & ~BPC0_LACE;
3180 custom.bplcon2 = (IS_OCS ? 0 : BPC2_KILLEHB) | BPC2_PF2P2 | BPC2_PF1P2;
3181 if (!IS_OCS) {
3182 custom.bplcon3 = par->bplcon3;
3183 if (IS_AGA)
3184 custom.bplcon4 = BPC4_ESPRM4 | BPC4_OSPRM4;
3185 if (par->beamcon0 & BMC0_VARBEAMEN) {
3186 custom.htotal = htotal2hw(par->htotal);
3187 custom.hbstrt = hbstrt2hw(par->hbstrt);
3188 custom.hbstop = hbstop2hw(par->hbstop);
3189 custom.hsstrt = hsstrt2hw(par->hsstrt);
3190 custom.hsstop = hsstop2hw(par->hsstop);
3191 custom.hcenter = hcenter2hw(par->hcenter);
3192 custom.vtotal = vtotal2hw(par->vtotal);
3193 custom.vbstrt = vbstrt2hw(par->vbstrt);
3194 custom.vbstop = vbstop2hw(par->vbstop);
3195 custom.vsstrt = vsstrt2hw(par->vsstrt);
3196 custom.vsstop = vsstop2hw(par->vsstop);
3197 }
3198 }
3199 if (!IS_OCS || par->hsstop)
3200 custom.beamcon0 = par->beamcon0;
3201 if (IS_AGA)
3202 custom.fmode = par->fmode;
3203
3204 /*
3205 * The minimum period for audio depends on htotal
3206 */
3207
3208 amiga_audio_min_period = div16(par->htotal);
3209
3210 is_lace = par->bplcon0 & BPC0_LACE ? 1 : 0;
3211 #if 1
3212 if (is_lace) {
3213 i = custom.vposr >> 15;
3214 } else {
3215 custom.vposw = custom.vposr | 0x8000;
3216 i = 1;
3217 }
3218 #else
3219 i = 1;
3220 custom.vposw = custom.vposr | 0x8000;
3221 #endif
3222 custom.cop2lc = (u_short *)ZTWO_PADDR(copdisplay.list[currentcop][i]);
3223 }
3224
3225 /*
3226 * (Un)Blank the screen (called by VBlank interrupt)
3227 */
3228
3229 static void ami_do_blank(void)
3230 {
3231 struct amifb_par *par = &currentpar;
3232 #if defined(CONFIG_FB_AMIGA_AGA)
3233 u_short bplcon3 = par->bplcon3;
3234 #endif
3235 u_char red, green, blue;
3236
3237 if (do_blank > 0) {
3238 custom.dmacon = DMAF_RASTER | DMAF_SPRITE;
3239 red = green = blue = 0;
3240 if (!IS_OCS && do_blank > 1) {
3241 switch (do_blank) {
3242 case FB_BLANK_VSYNC_SUSPEND:
3243 custom.hsstrt = hsstrt2hw(par->hsstrt);
3244 custom.hsstop = hsstop2hw(par->hsstop);
3245 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3246 custom.vsstop = vsstop2hw(par->vtotal+4);
3247 break;
3248 case FB_BLANK_HSYNC_SUSPEND:
3249 custom.hsstrt = hsstrt2hw(par->htotal+16);
3250 custom.hsstop = hsstop2hw(par->htotal+16);
3251 custom.vsstrt = vsstrt2hw(par->vsstrt);
3252 custom.vsstop = vsstrt2hw(par->vsstop);
3253 break;
3254 case FB_BLANK_POWERDOWN:
3255 custom.hsstrt = hsstrt2hw(par->htotal+16);
3256 custom.hsstop = hsstop2hw(par->htotal+16);
3257 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3258 custom.vsstop = vsstop2hw(par->vtotal+4);
3259 break;
3260 }
3261 if (!(par->beamcon0 & BMC0_VARBEAMEN)) {
3262 custom.htotal = htotal2hw(par->htotal);
3263 custom.vtotal = vtotal2hw(par->vtotal);
3264 custom.beamcon0 = BMC0_HARDDIS | BMC0_VARBEAMEN |
3265 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARCSYEN;
3266 }
3267 }
3268 } else {
3269 custom.dmacon = DMAF_SETCLR | DMAF_RASTER | DMAF_SPRITE;
3270 red = red0;
3271 green = green0;
3272 blue = blue0;
3273 if (!IS_OCS) {
3274 custom.hsstrt = hsstrt2hw(par->hsstrt);
3275 custom.hsstop = hsstop2hw(par->hsstop);
3276 custom.vsstrt = vsstrt2hw(par->vsstrt);
3277 custom.vsstop = vsstop2hw(par->vsstop);
3278 custom.beamcon0 = par->beamcon0;
3279 }
3280 }
3281 #if defined(CONFIG_FB_AMIGA_AGA)
3282 if (IS_AGA) {
3283 custom.bplcon3 = bplcon3;
3284 custom.color[0] = rgb2hw8_high(red, green, blue);
3285 custom.bplcon3 = bplcon3 | BPC3_LOCT;
3286 custom.color[0] = rgb2hw8_low(red, green, blue);
3287 custom.bplcon3 = bplcon3;
3288 } else
3289 #endif
3290 #if defined(CONFIG_FB_AMIGA_ECS)
3291 if (par->bplcon0 & BPC0_SHRES) {
3292 u_short color, mask;
3293 int i;
3294
3295 mask = 0x3333;
3296 color = rgb2hw2(red, green, blue);
3297 for (i = 12; i >= 0; i -= 4)
3298 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3299 mask <<=2; color >>= 2;
3300 for (i = 3; i >= 0; i--)
3301 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3302 } else
3303 #endif
3304 custom.color[0] = rgb2hw4(red, green, blue);
3305 is_blanked = do_blank > 0 ? do_blank : 0;
3306 }
3307
3308 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix)
3309 {
3310 struct amifb_par *par = &currentpar;
3311
3312 fix->crsr_width = fix->crsr_xsize = par->crsr.width;
3313 fix->crsr_height = fix->crsr_ysize = par->crsr.height;
3314 fix->crsr_color1 = 17;
3315 fix->crsr_color2 = 18;
3316 return 0;
3317 }
3318
3319 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
3320 {
3321 struct amifb_par *par = &currentpar;
3322 register u_short *lspr, *sspr;
3323 #ifdef __mc68000__
3324 register u_long datawords asm ("d2");
3325 #else
3326 register u_long datawords;
3327 #endif
3328 register short delta;
3329 register u_char color;
3330 short height, width, bits, words;
3331 int size, alloc;
3332
3333 size = par->crsr.height*par->crsr.width;
3334 alloc = var->height*var->width;
3335 var->height = par->crsr.height;
3336 var->width = par->crsr.width;
3337 var->xspot = par->crsr.spot_x;
3338 var->yspot = par->crsr.spot_y;
3339 if (size > var->height*var->width)
3340 return -ENAMETOOLONG;
3341 if (!access_ok(VERIFY_WRITE, data, size))
3342 return -EFAULT;
3343 delta = 1<<par->crsr.fmode;
3344 lspr = lofsprite + (delta<<1);
3345 if (par->bplcon0 & BPC0_LACE)
3346 sspr = shfsprite + (delta<<1);
3347 else
3348 sspr = NULL;
3349 for (height = (short)var->height-1; height >= 0; height--) {
3350 bits = 0; words = delta; datawords = 0;
3351 for (width = (short)var->width-1; width >= 0; width--) {
3352 if (bits == 0) {
3353 bits = 16; --words;
3354 #ifdef __mc68000__
3355 asm volatile ("movew %1@(%3:w:2),%0 ; swap %0 ; movew %1@+,%0"
3356 : "=d" (datawords), "=a" (lspr) : "1" (lspr), "d" (delta));
3357 #else
3358 datawords = (*(lspr+delta) << 16) | (*lspr++);
3359 #endif
3360 }
3361 --bits;
3362 #ifdef __mc68000__
3363 asm volatile (
3364 "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; "
3365 "swap %1 ; lslw #1,%1 ; roxlb #1,%0"
3366 : "=d" (color), "=d" (datawords) : "1" (datawords));
3367 #else
3368 color = (((datawords >> 30) & 2)
3369 | ((datawords >> 15) & 1));
3370 datawords <<= 1;
3371 #endif
3372 put_user(color, data++);
3373 }
3374 if (bits > 0) {
3375 --words; ++lspr;
3376 }
3377 while (--words >= 0)
3378 ++lspr;
3379 #ifdef __mc68000__
3380 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3381 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3382 #else
3383 lspr += delta;
3384 if (sspr) {
3385 u_short *tmp = lspr;
3386 lspr = sspr;
3387 sspr = tmp;
3388 }
3389 #endif
3390 }
3391 return 0;
3392 }
3393
3394 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
3395 {
3396 struct amifb_par *par = &currentpar;
3397 register u_short *lspr, *sspr;
3398 #ifdef __mc68000__
3399 register u_long datawords asm ("d2");
3400 #else
3401 register u_long datawords;
3402 #endif
3403 register short delta;
3404 u_short fmode;
3405 short height, width, bits, words;
3406
3407 if (!var->width)
3408 return -EINVAL;
3409 else if (var->width <= 16)
3410 fmode = TAG_FMODE_1;
3411 else if (var->width <= 32)
3412 fmode = TAG_FMODE_2;
3413 else if (var->width <= 64)
3414 fmode = TAG_FMODE_4;
3415 else
3416 return -EINVAL;
3417 if (fmode > maxfmode)
3418 return -EINVAL;
3419 if (!var->height)
3420 return -EINVAL;
3421 if (!access_ok(VERIFY_READ, data, var->width*var->height))
3422 return -EFAULT;
3423 delta = 1<<fmode;
3424 lofsprite = shfsprite = (u_short *)spritememory;
3425 lspr = lofsprite + (delta<<1);
3426 if (par->bplcon0 & BPC0_LACE) {
3427 if (((var->height+4)<<fmode<<2) > SPRITEMEMSIZE)
3428 return -EINVAL;
3429 memset(lspr, 0, (var->height+4)<<fmode<<2);
3430 shfsprite += ((var->height+5)&-2)<<fmode;
3431 sspr = shfsprite + (delta<<1);
3432 } else {
3433 if (((var->height+2)<<fmode<<2) > SPRITEMEMSIZE)
3434 return -EINVAL;
3435 memset(lspr, 0, (var->height+2)<<fmode<<2);
3436 sspr = NULL;
3437 }
3438 for (height = (short)var->height-1; height >= 0; height--) {
3439 bits = 16; words = delta; datawords = 0;
3440 for (width = (short)var->width-1; width >= 0; width--) {
3441 unsigned long tdata = 0;
3442 get_user(tdata, data);
3443 data++;
3444 #ifdef __mc68000__
3445 asm volatile (
3446 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0 ; "
3447 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0"
3448 : "=d" (datawords)
3449 : "0" (datawords), "d" (tdata));
3450 #else
3451 datawords = ((datawords << 1) & 0xfffefffe);
3452 datawords |= tdata & 1;
3453 datawords |= (tdata & 2) << (16-1);
3454 #endif
3455 if (--bits == 0) {
3456 bits = 16; --words;
3457 #ifdef __mc68000__
3458 asm volatile ("swap %2 ; movew %2,%0@(%3:w:2) ; swap %2 ; movew %2,%0@+"
3459 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta));
3460 #else
3461 *(lspr+delta) = (u_short) (datawords >> 16);
3462 *lspr++ = (u_short) (datawords & 0xffff);
3463 #endif
3464 }
3465 }
3466 if (bits < 16) {
3467 --words;
3468 #ifdef __mc68000__
3469 asm volatile (
3470 "swap %2 ; lslw %4,%2 ; movew %2,%0@(%3:w:2) ; "
3471 "swap %2 ; lslw %4,%2 ; movew %2,%0@+"
3472 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta), "d" (bits));
3473 #else
3474 *(lspr+delta) = (u_short) (datawords >> (16+bits));
3475 *lspr++ = (u_short) ((datawords & 0x0000ffff) >> bits);
3476 #endif
3477 }
3478 while (--words >= 0) {
3479 #ifdef __mc68000__
3480 asm volatile ("moveql #0,%%d0 ; movew %%d0,%0@(%2:w:2) ; movew %%d0,%0@+"
3481 : "=a" (lspr) : "0" (lspr), "d" (delta) : "d0");
3482 #else
3483 *(lspr+delta) = 0;
3484 *lspr++ = 0;
3485 #endif
3486 }
3487 #ifdef __mc68000__
3488 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3489 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3490 #else
3491 lspr += delta;
3492 if (sspr) {
3493 u_short *tmp = lspr;
3494 lspr = sspr;
3495 sspr = tmp;
3496 }
3497 #endif
3498 }
3499 par->crsr.height = var->height;
3500 par->crsr.width = var->width;
3501 par->crsr.spot_x = var->xspot;
3502 par->crsr.spot_y = var->yspot;
3503 par->crsr.fmode = fmode;
3504 if (IS_AGA) {
3505 par->fmode &= ~(FMODE_SPAGEM | FMODE_SPR32);
3506 par->fmode |= sprfetchmode[fmode];
3507 custom.fmode = par->fmode;
3508 }
3509 return 0;
3510 }
3511
3512 static int ami_get_cursorstate(struct fb_cursorstate *state)
3513 {
3514 struct amifb_par *par = &currentpar;
3515
3516 state->xoffset = par->crsr.crsr_x;
3517 state->yoffset = par->crsr.crsr_y;
3518 state->mode = cursormode;
3519 return 0;
3520 }
3521
3522 static int ami_set_cursorstate(struct fb_cursorstate *state)
3523 {
3524 struct amifb_par *par = &currentpar;
3525
3526 par->crsr.crsr_x = state->xoffset;
3527 par->crsr.crsr_y = state->yoffset;
3528 if ((cursormode = state->mode) == FB_CURSOR_OFF)
3529 cursorstate = -1;
3530 do_cursor = 1;
3531 return 0;
3532 }
3533
3534 static void ami_set_sprite(void)
3535 {
3536 struct amifb_par *par = &currentpar;
3537 copins *copl, *cops;
3538 u_short hs, vs, ve;
3539 u_long pl, ps, pt;
3540 short mx, my;
3541
3542 cops = copdisplay.list[currentcop][0];
3543 copl = copdisplay.list[currentcop][1];
3544 ps = pl = ZTWO_PADDR(dummysprite);
3545 mx = par->crsr.crsr_x-par->crsr.spot_x;
3546 my = par->crsr.crsr_y-par->crsr.spot_y;
3547 if (!(par->vmode & FB_VMODE_YWRAP)) {
3548 mx -= par->xoffset;
3549 my -= par->yoffset;
3550 }
3551 if (!is_blanked && cursorstate > 0 && par->crsr.height > 0 &&
3552 mx > -(short)par->crsr.width && mx < par->xres &&
3553 my > -(short)par->crsr.height && my < par->yres) {
3554 pl = ZTWO_PADDR(lofsprite);
3555 hs = par->diwstrt_h + (mx<<par->clk_shift) - 4;
3556 vs = par->diwstrt_v + (my<<par->line_shift);
3557 ve = vs + (par->crsr.height<<par->line_shift);
3558 if (par->bplcon0 & BPC0_LACE) {
3559 ps = ZTWO_PADDR(shfsprite);
3560 lofsprite[0] = spr2hw_pos(vs, hs);
3561 shfsprite[0] = spr2hw_pos(vs+1, hs);
3562 if (mod2(vs)) {
3563 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3564 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve+1);
3565 pt = pl; pl = ps; ps = pt;
3566 } else {
3567 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve+1);
3568 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve);
3569 }
3570 } else {
3571 lofsprite[0] = spr2hw_pos(vs, hs) | (IS_AGA && (par->fmode & FMODE_BSCAN2) ? 0x80 : 0);
3572 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3573 }
3574 }
3575 copl[cop_spr0ptrh].w[1] = highw(pl);
3576 copl[cop_spr0ptrl].w[1] = loww(pl);
3577 if (par->bplcon0 & BPC0_LACE) {
3578 cops[cop_spr0ptrh].w[1] = highw(ps);
3579 cops[cop_spr0ptrl].w[1] = loww(ps);
3580 }
3581 }
3582
3583
3584 /*
3585 * Initialise the Copper Initialisation List
3586 */
3587
3588 static void __init ami_init_copper(void)
3589 {
3590 copins *cop = copdisplay.init;
3591 u_long p;
3592 int i;
3593
3594 if (!IS_OCS) {
3595 (cop++)->l = CMOVE(BPC0_COLOR | BPC0_SHRES | BPC0_ECSENA, bplcon0);
3596 (cop++)->l = CMOVE(0x0181, diwstrt);
3597 (cop++)->l = CMOVE(0x0281, diwstop);
3598 (cop++)->l = CMOVE(0x0000, diwhigh);
3599 } else
3600 (cop++)->l = CMOVE(BPC0_COLOR, bplcon0);
3601 p = ZTWO_PADDR(dummysprite);
3602 for (i = 0; i < 8; i++) {
3603 (cop++)->l = CMOVE(0, spr[i].pos);
3604 (cop++)->l = CMOVE(highw(p), sprpt[i]);
3605 (cop++)->l = CMOVE2(loww(p), sprpt[i]);
3606 }
3607
3608 (cop++)->l = CMOVE(IF_SETCLR | IF_COPER, intreq);
3609 copdisplay.wait = cop;
3610 (cop++)->l = CEND;
3611 (cop++)->l = CMOVE(0, copjmp2);
3612 cop->l = CEND;
3613
3614 custom.cop1lc = (u_short *)ZTWO_PADDR(copdisplay.init);
3615 custom.copjmp1 = 0;
3616 }
3617
3618 static void ami_reinit_copper(void)
3619 {
3620 struct amifb_par *par = &currentpar;
3621
3622 copdisplay.init[cip_bplcon0].w[1] = ~(BPC0_BPU3 | BPC0_BPU2 | BPC0_BPU1 | BPC0_BPU0) & par->bplcon0;
3623 copdisplay.wait->l = CWAIT(32, par->diwstrt_v-4);
3624 }
3625
3626 /*
3627 * Build the Copper List
3628 */
3629
3630 static void ami_build_copper(void)
3631 {
3632 struct amifb_par *par = &currentpar;
3633 copins *copl, *cops;
3634 u_long p;
3635
3636 currentcop = 1 - currentcop;
3637
3638 copl = copdisplay.list[currentcop][1];
3639
3640 (copl++)->l = CWAIT(0, 10);
3641 (copl++)->l = CMOVE(par->bplcon0, bplcon0);
3642 (copl++)->l = CMOVE(0, sprpt[0]);
3643 (copl++)->l = CMOVE2(0, sprpt[0]);
3644
3645 if (par->bplcon0 & BPC0_LACE) {
3646 cops = copdisplay.list[currentcop][0];
3647
3648 (cops++)->l = CWAIT(0, 10);
3649 (cops++)->l = CMOVE(par->bplcon0, bplcon0);
3650 (cops++)->l = CMOVE(0, sprpt[0]);
3651 (cops++)->l = CMOVE2(0, sprpt[0]);
3652
3653 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v+1), diwstrt);
3654 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v+1), diwstop);
3655 (cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3656 (cops++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3657 if (!IS_OCS) {
3658 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v+1,
3659 par->diwstop_h, par->diwstop_v+1), diwhigh);
3660 (cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3661 par->diwstop_h, par->diwstop_v), diwhigh);
3662 #if 0
3663 if (par->beamcon0 & BMC0_VARBEAMEN) {
3664 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3665 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt+1), vbstrt);
3666 (copl++)->l = CMOVE(vbstop2hw(par->vbstop+1), vbstop);
3667 (cops++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3668 (cops++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3669 (cops++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3670 }
3671 #endif
3672 }
3673 p = ZTWO_PADDR(copdisplay.list[currentcop][0]);
3674 (copl++)->l = CMOVE(highw(p), cop2lc);
3675 (copl++)->l = CMOVE2(loww(p), cop2lc);
3676 p = ZTWO_PADDR(copdisplay.list[currentcop][1]);
3677 (cops++)->l = CMOVE(highw(p), cop2lc);
3678 (cops++)->l = CMOVE2(loww(p), cop2lc);
3679 copdisplay.rebuild[0] = cops;
3680 } else {
3681 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3682 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3683 if (!IS_OCS) {
3684 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3685 par->diwstop_h, par->diwstop_v), diwhigh);
3686 #if 0
3687 if (par->beamcon0 & BMC0_VARBEAMEN) {
3688 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3689 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3690 (copl++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3691 }
3692 #endif
3693 }
3694 }
3695 copdisplay.rebuild[1] = copl;
3696
3697 ami_update_par();
3698 ami_rebuild_copper();
3699 }
3700
3701 /*
3702 * Rebuild the Copper List
3703 *
3704 * We only change the things that are not static
3705 */
3706
3707 static void ami_rebuild_copper(void)
3708 {
3709 struct amifb_par *par = &currentpar;
3710 copins *copl, *cops;
3711 u_short line, h_end1, h_end2;
3712 short i;
3713 u_long p;
3714
3715 if (IS_AGA && maxfmode + par->clk_shift == 0)
3716 h_end1 = par->diwstrt_h-64;
3717 else
3718 h_end1 = par->htotal-32;
3719 h_end2 = par->ddfstop+64;
3720
3721 ami_set_sprite();
3722
3723 copl = copdisplay.rebuild[1];
3724 p = par->bplpt0;
3725 if (par->vmode & FB_VMODE_YWRAP) {
3726 if ((par->vyres-par->yoffset) != 1 || !mod2(par->diwstrt_v)) {
3727 if (par->yoffset > par->vyres-par->yres) {
3728 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3729 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3730 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3731 }
3732 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 1;
3733 while (line >= 512) {
3734 (copl++)->l = CWAIT(h_end1, 510);
3735 line -= 512;
3736 }
3737 if (line >= 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3738 (copl++)->l = CWAIT(h_end1, line);
3739 else
3740 (copl++)->l = CWAIT(h_end2, line);
3741 p = par->bplpt0wrap;
3742 }
3743 } else p = par->bplpt0wrap;
3744 }
3745 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3746 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3747 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3748 }
3749 copl->l = CEND;
3750
3751 if (par->bplcon0 & BPC0_LACE) {
3752 cops = copdisplay.rebuild[0];
3753 p = par->bplpt0;
3754 if (mod2(par->diwstrt_v))
3755 p -= par->next_line;
3756 else
3757 p += par->next_line;
3758 if (par->vmode & FB_VMODE_YWRAP) {
3759 if ((par->vyres-par->yoffset) != 1 || mod2(par->diwstrt_v)) {
3760 if (par->yoffset > par->vyres-par->yres+1) {
3761 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3762 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3763 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3764 }
3765 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 2;
3766 while (line >= 512) {
3767 (cops++)->l = CWAIT(h_end1, 510);
3768 line -= 512;
3769 }
3770 if (line > 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3771 (cops++)->l = CWAIT(h_end1, line);
3772 else
3773 (cops++)->l = CWAIT(h_end2, line);
3774 p = par->bplpt0wrap;
3775 if (mod2(par->diwstrt_v+par->vyres-par->yoffset))
3776 p -= par->next_line;
3777 else
3778 p += par->next_line;
3779 }
3780 } else p = par->bplpt0wrap - par->next_line;
3781 }
3782 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3783 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3784 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3785 }
3786 cops->l = CEND;
3787 }
3788 }
3789
3790
3791 module_init(amifb_init);
3792
3793 #ifdef MODULE
3794 MODULE_LICENSE("GPL");
3795
3796 void cleanup_module(void)
3797 {
3798 unregister_framebuffer(&fb_info);
3799 amifb_deinit();
3800 amifb_video_off();
3801 }
3802 #endif /* MODULE */
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