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Blackfin: bf548-ezkit/bf561-ezkit: update nor flash layout
[zen-stable.git] / drivers / video / amifb.c
blobe5d6b56d4447e274d0db3f8eedf68cda99bfb53e
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/delay.h>
49 #include <linux/interrupt.h>
50 #include <linux/fb.h>
51 #include <linux/init.h>
52 #include <linux/ioport.h>
53 #include <linux/platform_device.h>
54 #include <linux/uaccess.h>
55
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, __func__ , ## 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 static void amifb_deinit(struct platform_device *pdev);
1140
1141 /*
1142 * Internal routines
1143 */
1144
1145 static int flash_cursor(void);
1146 static irqreturn_t amifb_interrupt(int irq, void *dev_id);
1147 static u_long chipalloc(u_long size);
1148 static void chipfree(void);
1149
1150 /*
1151 * Hardware routines
1152 */
1153
1154 static int ami_decode_var(struct fb_var_screeninfo *var,
1155 struct amifb_par *par);
1156 static int ami_encode_var(struct fb_var_screeninfo *var,
1157 struct amifb_par *par);
1158 static void ami_pan_var(struct fb_var_screeninfo *var);
1159 static int ami_update_par(void);
1160 static void ami_update_display(void);
1161 static void ami_init_display(void);
1162 static void ami_do_blank(void);
1163 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix);
1164 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data);
1165 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data);
1166 static int ami_get_cursorstate(struct fb_cursorstate *state);
1167 static int ami_set_cursorstate(struct fb_cursorstate *state);
1168 static void ami_set_sprite(void);
1169 static void ami_init_copper(void);
1170 static void ami_reinit_copper(void);
1171 static void ami_build_copper(void);
1172 static void ami_rebuild_copper(void);
1173
1174
1175 static struct fb_ops amifb_ops = {
1176 .owner = THIS_MODULE,
1177 .fb_check_var = amifb_check_var,
1178 .fb_set_par = amifb_set_par,
1179 .fb_setcolreg = amifb_setcolreg,
1180 .fb_blank = amifb_blank,
1181 .fb_pan_display = amifb_pan_display,
1182 .fb_fillrect = amifb_fillrect,
1183 .fb_copyarea = amifb_copyarea,
1184 .fb_imageblit = amifb_imageblit,
1185 .fb_ioctl = amifb_ioctl,
1186 };
1187
1188 static void __init amifb_setup_mcap(char *spec)
1189 {
1190 char *p;
1191 int vmin, vmax, hmin, hmax;
1192
1193 /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax>
1194 * <V*> vertical freq. in Hz
1195 * <H*> horizontal freq. in kHz
1196 */
1197
1198 if (!(p = strsep(&spec, ";")) || !*p)
1199 return;
1200 vmin = simple_strtoul(p, NULL, 10);
1201 if (vmin <= 0)
1202 return;
1203 if (!(p = strsep(&spec, ";")) || !*p)
1204 return;
1205 vmax = simple_strtoul(p, NULL, 10);
1206 if (vmax <= 0 || vmax <= vmin)
1207 return;
1208 if (!(p = strsep(&spec, ";")) || !*p)
1209 return;
1210 hmin = 1000 * simple_strtoul(p, NULL, 10);
1211 if (hmin <= 0)
1212 return;
1213 if (!(p = strsep(&spec, "")) || !*p)
1214 return;
1215 hmax = 1000 * simple_strtoul(p, NULL, 10);
1216 if (hmax <= 0 || hmax <= hmin)
1217 return;
1218
1219 fb_info.monspecs.vfmin = vmin;
1220 fb_info.monspecs.vfmax = vmax;
1221 fb_info.monspecs.hfmin = hmin;
1222 fb_info.monspecs.hfmax = hmax;
1223 }
1224
1225 int __init amifb_setup(char *options)
1226 {
1227 char *this_opt;
1228
1229 if (!options || !*options)
1230 return 0;
1231
1232 while ((this_opt = strsep(&options, ",")) != NULL) {
1233 if (!*this_opt)
1234 continue;
1235 if (!strcmp(this_opt, "inverse")) {
1236 amifb_inverse = 1;
1237 fb_invert_cmaps();
1238 } else if (!strcmp(this_opt, "ilbm"))
1239 amifb_ilbm = 1;
1240 else if (!strncmp(this_opt, "monitorcap:", 11))
1241 amifb_setup_mcap(this_opt+11);
1242 else if (!strncmp(this_opt, "fstart:", 7))
1243 min_fstrt = simple_strtoul(this_opt+7, NULL, 0);
1244 else
1245 mode_option = this_opt;
1246 }
1247
1248 if (min_fstrt < 48)
1249 min_fstrt = 48;
1250
1251 return 0;
1252 }
1253
1254
1255 static int amifb_check_var(struct fb_var_screeninfo *var,
1256 struct fb_info *info)
1257 {
1258 int err;
1259 struct amifb_par par;
1260
1261 /* Validate wanted screen parameters */
1262 if ((err = ami_decode_var(var, &par)))
1263 return err;
1264
1265 /* Encode (possibly rounded) screen parameters */
1266 ami_encode_var(var, &par);
1267 return 0;
1268 }
1269
1270
1271 static int amifb_set_par(struct fb_info *info)
1272 {
1273 struct amifb_par *par = (struct amifb_par *)info->par;
1274
1275 do_vmode_pan = 0;
1276 do_vmode_full = 0;
1277
1278 /* Decode wanted screen parameters */
1279 ami_decode_var(&info->var, par);
1280
1281 /* Set new videomode */
1282 ami_build_copper();
1283
1284 /* Set VBlank trigger */
1285 do_vmode_full = 1;
1286
1287 /* Update fix for new screen parameters */
1288 if (par->bpp == 1) {
1289 info->fix.type = FB_TYPE_PACKED_PIXELS;
1290 info->fix.type_aux = 0;
1291 } else if (amifb_ilbm) {
1292 info->fix.type = FB_TYPE_INTERLEAVED_PLANES;
1293 info->fix.type_aux = par->next_line;
1294 } else {
1295 info->fix.type = FB_TYPE_PLANES;
1296 info->fix.type_aux = 0;
1297 }
1298 info->fix.line_length = div8(upx(16<<maxfmode, par->vxres));
1299
1300 if (par->vmode & FB_VMODE_YWRAP) {
1301 info->fix.ywrapstep = 1;
1302 info->fix.xpanstep = 0;
1303 info->fix.ypanstep = 0;
1304 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YWRAP |
1305 FBINFO_READS_FAST; /* override SCROLL_REDRAW */
1306 } else {
1307 info->fix.ywrapstep = 0;
1308 if (par->vmode & FB_VMODE_SMOOTH_XPAN)
1309 info->fix.xpanstep = 1;
1310 else
1311 info->fix.xpanstep = 16<<maxfmode;
1312 info->fix.ypanstep = 1;
1313 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1314 }
1315 return 0;
1316 }
1317
1318
1319 /*
1320 * Pan or Wrap the Display
1321 *
1322 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1323 */
1324
1325 static int amifb_pan_display(struct fb_var_screeninfo *var,
1326 struct fb_info *info)
1327 {
1328 if (var->vmode & FB_VMODE_YWRAP) {
1329 if (var->yoffset < 0 ||
1330 var->yoffset >= info->var.yres_virtual || var->xoffset)
1331 return -EINVAL;
1332 } else {
1333 /*
1334 * TODO: There will be problems when xpan!=1, so some columns
1335 * on the right side will never be seen
1336 */
1337 if (var->xoffset+info->var.xres > upx(16<<maxfmode, info->var.xres_virtual) ||
1338 var->yoffset+info->var.yres > info->var.yres_virtual)
1339 return -EINVAL;
1340 }
1341 ami_pan_var(var);
1342 info->var.xoffset = var->xoffset;
1343 info->var.yoffset = var->yoffset;
1344 if (var->vmode & FB_VMODE_YWRAP)
1345 info->var.vmode |= FB_VMODE_YWRAP;
1346 else
1347 info->var.vmode &= ~FB_VMODE_YWRAP;
1348 return 0;
1349 }
1350
1351
1352 #if BITS_PER_LONG == 32
1353 #define BYTES_PER_LONG 4
1354 #define SHIFT_PER_LONG 5
1355 #elif BITS_PER_LONG == 64
1356 #define BYTES_PER_LONG 8
1357 #define SHIFT_PER_LONG 6
1358 #else
1359 #define Please update me
1360 #endif
1361
1362
1363 /*
1364 * Compose two values, using a bitmask as decision value
1365 * This is equivalent to (a & mask) | (b & ~mask)
1366 */
1367
1368 static inline unsigned long comp(unsigned long a, unsigned long b,
1369 unsigned long mask)
1370 {
1371 return ((a ^ b) & mask) ^ b;
1372 }
1373
1374
1375 static inline unsigned long xor(unsigned long a, unsigned long b,
1376 unsigned long mask)
1377 {
1378 return (a & mask) ^ b;
1379 }
1380
1381
1382 /*
1383 * Unaligned forward bit copy using 32-bit or 64-bit memory accesses
1384 */
1385
1386 static void bitcpy(unsigned long *dst, int dst_idx, const unsigned long *src,
1387 int src_idx, u32 n)
1388 {
1389 unsigned long first, last;
1390 int shift = dst_idx-src_idx, left, right;
1391 unsigned long d0, d1;
1392 int m;
1393
1394 if (!n)
1395 return;
1396
1397 shift = dst_idx-src_idx;
1398 first = ~0UL >> dst_idx;
1399 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1400
1401 if (!shift) {
1402 // Same alignment for source and dest
1403
1404 if (dst_idx+n <= BITS_PER_LONG) {
1405 // Single word
1406 if (last)
1407 first &= last;
1408 *dst = comp(*src, *dst, first);
1409 } else {
1410 // Multiple destination words
1411 // Leading bits
1412 if (first) {
1413 *dst = comp(*src, *dst, first);
1414 dst++;
1415 src++;
1416 n -= BITS_PER_LONG-dst_idx;
1417 }
1418
1419 // Main chunk
1420 n /= BITS_PER_LONG;
1421 while (n >= 8) {
1422 *dst++ = *src++;
1423 *dst++ = *src++;
1424 *dst++ = *src++;
1425 *dst++ = *src++;
1426 *dst++ = *src++;
1427 *dst++ = *src++;
1428 *dst++ = *src++;
1429 *dst++ = *src++;
1430 n -= 8;
1431 }
1432 while (n--)
1433 *dst++ = *src++;
1434
1435 // Trailing bits
1436 if (last)
1437 *dst = comp(*src, *dst, last);
1438 }
1439 } else {
1440 // Different alignment for source and dest
1441
1442 right = shift & (BITS_PER_LONG-1);
1443 left = -shift & (BITS_PER_LONG-1);
1444
1445 if (dst_idx+n <= BITS_PER_LONG) {
1446 // Single destination word
1447 if (last)
1448 first &= last;
1449 if (shift > 0) {
1450 // Single source word
1451 *dst = comp(*src >> right, *dst, first);
1452 } else if (src_idx+n <= BITS_PER_LONG) {
1453 // Single source word
1454 *dst = comp(*src << left, *dst, first);
1455 } else {
1456 // 2 source words
1457 d0 = *src++;
1458 d1 = *src;
1459 *dst = comp(d0 << left | d1 >> right, *dst,
1460 first);
1461 }
1462 } else {
1463 // Multiple destination words
1464 d0 = *src++;
1465 // Leading bits
1466 if (shift > 0) {
1467 // Single source word
1468 *dst = comp(d0 >> right, *dst, first);
1469 dst++;
1470 n -= BITS_PER_LONG-dst_idx;
1471 } else {
1472 // 2 source words
1473 d1 = *src++;
1474 *dst = comp(d0 << left | d1 >> right, *dst,
1475 first);
1476 d0 = d1;
1477 dst++;
1478 n -= BITS_PER_LONG-dst_idx;
1479 }
1480
1481 // Main chunk
1482 m = n % BITS_PER_LONG;
1483 n /= BITS_PER_LONG;
1484 while (n >= 4) {
1485 d1 = *src++;
1486 *dst++ = d0 << left | d1 >> right;
1487 d0 = d1;
1488 d1 = *src++;
1489 *dst++ = d0 << left | d1 >> right;
1490 d0 = d1;
1491 d1 = *src++;
1492 *dst++ = d0 << left | d1 >> right;
1493 d0 = d1;
1494 d1 = *src++;
1495 *dst++ = d0 << left | d1 >> right;
1496 d0 = d1;
1497 n -= 4;
1498 }
1499 while (n--) {
1500 d1 = *src++;
1501 *dst++ = d0 << left | d1 >> right;
1502 d0 = d1;
1503 }
1504
1505 // Trailing bits
1506 if (last) {
1507 if (m <= right) {
1508 // Single source word
1509 *dst = comp(d0 << left, *dst, last);
1510 } else {
1511 // 2 source words
1512 d1 = *src;
1513 *dst = comp(d0 << left | d1 >> right,
1514 *dst, last);
1515 }
1516 }
1517 }
1518 }
1519 }
1520
1521
1522 /*
1523 * Unaligned reverse bit copy using 32-bit or 64-bit memory accesses
1524 */
1525
1526 static void bitcpy_rev(unsigned long *dst, int dst_idx,
1527 const unsigned long *src, int src_idx, u32 n)
1528 {
1529 unsigned long first, last;
1530 int shift = dst_idx-src_idx, left, right;
1531 unsigned long d0, d1;
1532 int m;
1533
1534 if (!n)
1535 return;
1536
1537 dst += (n-1)/BITS_PER_LONG;
1538 src += (n-1)/BITS_PER_LONG;
1539 if ((n-1) % BITS_PER_LONG) {
1540 dst_idx += (n-1) % BITS_PER_LONG;
1541 dst += dst_idx >> SHIFT_PER_LONG;
1542 dst_idx &= BITS_PER_LONG-1;
1543 src_idx += (n-1) % BITS_PER_LONG;
1544 src += src_idx >> SHIFT_PER_LONG;
1545 src_idx &= BITS_PER_LONG-1;
1546 }
1547
1548 shift = dst_idx-src_idx;
1549 first = ~0UL << (BITS_PER_LONG-1-dst_idx);
1550 last = ~(~0UL << (BITS_PER_LONG-1-((dst_idx-n) % BITS_PER_LONG)));
1551
1552 if (!shift) {
1553 // Same alignment for source and dest
1554
1555 if ((unsigned long)dst_idx+1 >= n) {
1556 // Single word
1557 if (last)
1558 first &= last;
1559 *dst = comp(*src, *dst, first);
1560 } else {
1561 // Multiple destination words
1562 // Leading bits
1563 if (first) {
1564 *dst = comp(*src, *dst, first);
1565 dst--;
1566 src--;
1567 n -= dst_idx+1;
1568 }
1569
1570 // Main chunk
1571 n /= BITS_PER_LONG;
1572 while (n >= 8) {
1573 *dst-- = *src--;
1574 *dst-- = *src--;
1575 *dst-- = *src--;
1576 *dst-- = *src--;
1577 *dst-- = *src--;
1578 *dst-- = *src--;
1579 *dst-- = *src--;
1580 *dst-- = *src--;
1581 n -= 8;
1582 }
1583 while (n--)
1584 *dst-- = *src--;
1585
1586 // Trailing bits
1587 if (last)
1588 *dst = comp(*src, *dst, last);
1589 }
1590 } else {
1591 // Different alignment for source and dest
1592
1593 right = shift & (BITS_PER_LONG-1);
1594 left = -shift & (BITS_PER_LONG-1);
1595
1596 if ((unsigned long)dst_idx+1 >= n) {
1597 // Single destination word
1598 if (last)
1599 first &= last;
1600 if (shift < 0) {
1601 // Single source word
1602 *dst = comp(*src << left, *dst, first);
1603 } else if (1+(unsigned long)src_idx >= n) {
1604 // Single source word
1605 *dst = comp(*src >> right, *dst, first);
1606 } else {
1607 // 2 source words
1608 d0 = *src--;
1609 d1 = *src;
1610 *dst = comp(d0 >> right | d1 << left, *dst,
1611 first);
1612 }
1613 } else {
1614 // Multiple destination words
1615 d0 = *src--;
1616 // Leading bits
1617 if (shift < 0) {
1618 // Single source word
1619 *dst = comp(d0 << left, *dst, first);
1620 dst--;
1621 n -= dst_idx+1;
1622 } else {
1623 // 2 source words
1624 d1 = *src--;
1625 *dst = comp(d0 >> right | d1 << left, *dst,
1626 first);
1627 d0 = d1;
1628 dst--;
1629 n -= dst_idx+1;
1630 }
1631
1632 // Main chunk
1633 m = n % BITS_PER_LONG;
1634 n /= BITS_PER_LONG;
1635 while (n >= 4) {
1636 d1 = *src--;
1637 *dst-- = d0 >> right | d1 << left;
1638 d0 = d1;
1639 d1 = *src--;
1640 *dst-- = d0 >> right | d1 << left;
1641 d0 = d1;
1642 d1 = *src--;
1643 *dst-- = d0 >> right | d1 << left;
1644 d0 = d1;
1645 d1 = *src--;
1646 *dst-- = d0 >> right | d1 << left;
1647 d0 = d1;
1648 n -= 4;
1649 }
1650 while (n--) {
1651 d1 = *src--;
1652 *dst-- = d0 >> right | d1 << left;
1653 d0 = d1;
1654 }
1655
1656 // Trailing bits
1657 if (last) {
1658 if (m <= left) {
1659 // Single source word
1660 *dst = comp(d0 >> right, *dst, last);
1661 } else {
1662 // 2 source words
1663 d1 = *src;
1664 *dst = comp(d0 >> right | d1 << left,
1665 *dst, last);
1666 }
1667 }
1668 }
1669 }
1670 }
1671
1672
1673 /*
1674 * Unaligned forward inverting bit copy using 32-bit or 64-bit memory
1675 * accesses
1676 */
1677
1678 static void bitcpy_not(unsigned long *dst, int dst_idx,
1679 const unsigned long *src, int src_idx, u32 n)
1680 {
1681 unsigned long first, last;
1682 int shift = dst_idx-src_idx, left, right;
1683 unsigned long d0, d1;
1684 int m;
1685
1686 if (!n)
1687 return;
1688
1689 shift = dst_idx-src_idx;
1690 first = ~0UL >> dst_idx;
1691 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1692
1693 if (!shift) {
1694 // Same alignment for source and dest
1695
1696 if (dst_idx+n <= BITS_PER_LONG) {
1697 // Single word
1698 if (last)
1699 first &= last;
1700 *dst = comp(~*src, *dst, first);
1701 } else {
1702 // Multiple destination words
1703 // Leading bits
1704 if (first) {
1705 *dst = comp(~*src, *dst, first);
1706 dst++;
1707 src++;
1708 n -= BITS_PER_LONG-dst_idx;
1709 }
1710
1711 // Main chunk
1712 n /= BITS_PER_LONG;
1713 while (n >= 8) {
1714 *dst++ = ~*src++;
1715 *dst++ = ~*src++;
1716 *dst++ = ~*src++;
1717 *dst++ = ~*src++;
1718 *dst++ = ~*src++;
1719 *dst++ = ~*src++;
1720 *dst++ = ~*src++;
1721 *dst++ = ~*src++;
1722 n -= 8;
1723 }
1724 while (n--)
1725 *dst++ = ~*src++;
1726
1727 // Trailing bits
1728 if (last)
1729 *dst = comp(~*src, *dst, last);
1730 }
1731 } else {
1732 // Different alignment for source and dest
1733
1734 right = shift & (BITS_PER_LONG-1);
1735 left = -shift & (BITS_PER_LONG-1);
1736
1737 if (dst_idx+n <= BITS_PER_LONG) {
1738 // Single destination word
1739 if (last)
1740 first &= last;
1741 if (shift > 0) {
1742 // Single source word
1743 *dst = comp(~*src >> right, *dst, first);
1744 } else if (src_idx+n <= BITS_PER_LONG) {
1745 // Single source word
1746 *dst = comp(~*src << left, *dst, first);
1747 } else {
1748 // 2 source words
1749 d0 = ~*src++;
1750 d1 = ~*src;
1751 *dst = comp(d0 << left | d1 >> right, *dst,
1752 first);
1753 }
1754 } else {
1755 // Multiple destination words
1756 d0 = ~*src++;
1757 // Leading bits
1758 if (shift > 0) {
1759 // Single source word
1760 *dst = comp(d0 >> right, *dst, first);
1761 dst++;
1762 n -= BITS_PER_LONG-dst_idx;
1763 } else {
1764 // 2 source words
1765 d1 = ~*src++;
1766 *dst = comp(d0 << left | d1 >> right, *dst,
1767 first);
1768 d0 = d1;
1769 dst++;
1770 n -= BITS_PER_LONG-dst_idx;
1771 }
1772
1773 // Main chunk
1774 m = n % BITS_PER_LONG;
1775 n /= BITS_PER_LONG;
1776 while (n >= 4) {
1777 d1 = ~*src++;
1778 *dst++ = d0 << left | d1 >> right;
1779 d0 = d1;
1780 d1 = ~*src++;
1781 *dst++ = d0 << left | d1 >> right;
1782 d0 = d1;
1783 d1 = ~*src++;
1784 *dst++ = d0 << left | d1 >> right;
1785 d0 = d1;
1786 d1 = ~*src++;
1787 *dst++ = d0 << left | d1 >> right;
1788 d0 = d1;
1789 n -= 4;
1790 }
1791 while (n--) {
1792 d1 = ~*src++;
1793 *dst++ = d0 << left | d1 >> right;
1794 d0 = d1;
1795 }
1796
1797 // Trailing bits
1798 if (last) {
1799 if (m <= right) {
1800 // Single source word
1801 *dst = comp(d0 << left, *dst, last);
1802 } else {
1803 // 2 source words
1804 d1 = ~*src;
1805 *dst = comp(d0 << left | d1 >> right,
1806 *dst, last);
1807 }
1808 }
1809 }
1810 }
1811 }
1812
1813
1814 /*
1815 * Unaligned 32-bit pattern fill using 32/64-bit memory accesses
1816 */
1817
1818 static void bitfill32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1819 {
1820 unsigned long val = pat;
1821 unsigned long first, last;
1822
1823 if (!n)
1824 return;
1825
1826 #if BITS_PER_LONG == 64
1827 val |= val << 32;
1828 #endif
1829
1830 first = ~0UL >> dst_idx;
1831 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1832
1833 if (dst_idx+n <= BITS_PER_LONG) {
1834 // Single word
1835 if (last)
1836 first &= last;
1837 *dst = comp(val, *dst, first);
1838 } else {
1839 // Multiple destination words
1840 // Leading bits
1841 if (first) {
1842 *dst = comp(val, *dst, first);
1843 dst++;
1844 n -= BITS_PER_LONG-dst_idx;
1845 }
1846
1847 // Main chunk
1848 n /= BITS_PER_LONG;
1849 while (n >= 8) {
1850 *dst++ = val;
1851 *dst++ = val;
1852 *dst++ = val;
1853 *dst++ = val;
1854 *dst++ = val;
1855 *dst++ = val;
1856 *dst++ = val;
1857 *dst++ = val;
1858 n -= 8;
1859 }
1860 while (n--)
1861 *dst++ = val;
1862
1863 // Trailing bits
1864 if (last)
1865 *dst = comp(val, *dst, last);
1866 }
1867 }
1868
1869
1870 /*
1871 * Unaligned 32-bit pattern xor using 32/64-bit memory accesses
1872 */
1873
1874 static void bitxor32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1875 {
1876 unsigned long val = pat;
1877 unsigned long first, last;
1878
1879 if (!n)
1880 return;
1881
1882 #if BITS_PER_LONG == 64
1883 val |= val << 32;
1884 #endif
1885
1886 first = ~0UL >> dst_idx;
1887 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1888
1889 if (dst_idx+n <= BITS_PER_LONG) {
1890 // Single word
1891 if (last)
1892 first &= last;
1893 *dst = xor(val, *dst, first);
1894 } else {
1895 // Multiple destination words
1896 // Leading bits
1897 if (first) {
1898 *dst = xor(val, *dst, first);
1899 dst++;
1900 n -= BITS_PER_LONG-dst_idx;
1901 }
1902
1903 // Main chunk
1904 n /= BITS_PER_LONG;
1905 while (n >= 4) {
1906 *dst++ ^= val;
1907 *dst++ ^= val;
1908 *dst++ ^= val;
1909 *dst++ ^= val;
1910 n -= 4;
1911 }
1912 while (n--)
1913 *dst++ ^= val;
1914
1915 // Trailing bits
1916 if (last)
1917 *dst = xor(val, *dst, last);
1918 }
1919 }
1920
1921 static inline void fill_one_line(int bpp, unsigned long next_plane,
1922 unsigned long *dst, int dst_idx, u32 n,
1923 u32 color)
1924 {
1925 while (1) {
1926 dst += dst_idx >> SHIFT_PER_LONG;
1927 dst_idx &= (BITS_PER_LONG-1);
1928 bitfill32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1929 if (!--bpp)
1930 break;
1931 color >>= 1;
1932 dst_idx += next_plane*8;
1933 }
1934 }
1935
1936 static inline void xor_one_line(int bpp, unsigned long next_plane,
1937 unsigned long *dst, int dst_idx, u32 n,
1938 u32 color)
1939 {
1940 while (color) {
1941 dst += dst_idx >> SHIFT_PER_LONG;
1942 dst_idx &= (BITS_PER_LONG-1);
1943 bitxor32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1944 if (!--bpp)
1945 break;
1946 color >>= 1;
1947 dst_idx += next_plane*8;
1948 }
1949 }
1950
1951
1952 static void amifb_fillrect(struct fb_info *info,
1953 const struct fb_fillrect *rect)
1954 {
1955 struct amifb_par *par = (struct amifb_par *)info->par;
1956 int dst_idx, x2, y2;
1957 unsigned long *dst;
1958 u32 width, height;
1959
1960 if (!rect->width || !rect->height)
1961 return;
1962
1963 /*
1964 * We could use hardware clipping but on many cards you get around
1965 * hardware clipping by writing to framebuffer directly.
1966 * */
1967 x2 = rect->dx + rect->width;
1968 y2 = rect->dy + rect->height;
1969 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
1970 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
1971 width = x2 - rect->dx;
1972 height = y2 - rect->dy;
1973
1974 dst = (unsigned long *)
1975 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
1976 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
1977 dst_idx += rect->dy*par->next_line*8+rect->dx;
1978 while (height--) {
1979 switch (rect->rop) {
1980 case ROP_COPY:
1981 fill_one_line(info->var.bits_per_pixel,
1982 par->next_plane, dst, dst_idx, width,
1983 rect->color);
1984 break;
1985
1986 case ROP_XOR:
1987 xor_one_line(info->var.bits_per_pixel, par->next_plane,
1988 dst, dst_idx, width, rect->color);
1989 break;
1990 }
1991 dst_idx += par->next_line*8;
1992 }
1993 }
1994
1995 static inline void copy_one_line(int bpp, unsigned long next_plane,
1996 unsigned long *dst, int dst_idx,
1997 unsigned long *src, int src_idx, u32 n)
1998 {
1999 while (1) {
2000 dst += dst_idx >> SHIFT_PER_LONG;
2001 dst_idx &= (BITS_PER_LONG-1);
2002 src += src_idx >> SHIFT_PER_LONG;
2003 src_idx &= (BITS_PER_LONG-1);
2004 bitcpy(dst, dst_idx, src, src_idx, n);
2005 if (!--bpp)
2006 break;
2007 dst_idx += next_plane*8;
2008 src_idx += next_plane*8;
2009 }
2010 }
2011
2012 static inline void copy_one_line_rev(int bpp, unsigned long next_plane,
2013 unsigned long *dst, int dst_idx,
2014 unsigned long *src, int src_idx, u32 n)
2015 {
2016 while (1) {
2017 dst += dst_idx >> SHIFT_PER_LONG;
2018 dst_idx &= (BITS_PER_LONG-1);
2019 src += src_idx >> SHIFT_PER_LONG;
2020 src_idx &= (BITS_PER_LONG-1);
2021 bitcpy_rev(dst, dst_idx, src, src_idx, n);
2022 if (!--bpp)
2023 break;
2024 dst_idx += next_plane*8;
2025 src_idx += next_plane*8;
2026 }
2027 }
2028
2029
2030 static void amifb_copyarea(struct fb_info *info,
2031 const struct fb_copyarea *area)
2032 {
2033 struct amifb_par *par = (struct amifb_par *)info->par;
2034 int x2, y2;
2035 u32 dx, dy, sx, sy, width, height;
2036 unsigned long *dst, *src;
2037 int dst_idx, src_idx;
2038 int rev_copy = 0;
2039
2040 /* clip the destination */
2041 x2 = area->dx + area->width;
2042 y2 = area->dy + area->height;
2043 dx = area->dx > 0 ? area->dx : 0;
2044 dy = area->dy > 0 ? area->dy : 0;
2045 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2046 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2047 width = x2 - dx;
2048 height = y2 - dy;
2049
2050 if (area->sx + dx < area->dx || area->sy + dy < area->dy)
2051 return;
2052
2053 /* update sx,sy */
2054 sx = area->sx + (dx - area->dx);
2055 sy = area->sy + (dy - area->dy);
2056
2057 /* the source must be completely inside the virtual screen */
2058 if (sx + width > info->var.xres_virtual ||
2059 sy + height > info->var.yres_virtual)
2060 return;
2061
2062 if (dy > sy || (dy == sy && dx > sx)) {
2063 dy += height;
2064 sy += height;
2065 rev_copy = 1;
2066 }
2067 dst = (unsigned long *)
2068 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2069 src = dst;
2070 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2071 src_idx = dst_idx;
2072 dst_idx += dy*par->next_line*8+dx;
2073 src_idx += sy*par->next_line*8+sx;
2074 if (rev_copy) {
2075 while (height--) {
2076 dst_idx -= par->next_line*8;
2077 src_idx -= par->next_line*8;
2078 copy_one_line_rev(info->var.bits_per_pixel,
2079 par->next_plane, dst, dst_idx, src,
2080 src_idx, width);
2081 }
2082 } else {
2083 while (height--) {
2084 copy_one_line(info->var.bits_per_pixel,
2085 par->next_plane, dst, dst_idx, src,
2086 src_idx, width);
2087 dst_idx += par->next_line*8;
2088 src_idx += par->next_line*8;
2089 }
2090 }
2091 }
2092
2093
2094 static inline void expand_one_line(int bpp, unsigned long next_plane,
2095 unsigned long *dst, int dst_idx, u32 n,
2096 const u8 *data, u32 bgcolor, u32 fgcolor)
2097 {
2098 const unsigned long *src;
2099 int src_idx;
2100
2101 while (1) {
2102 dst += dst_idx >> SHIFT_PER_LONG;
2103 dst_idx &= (BITS_PER_LONG-1);
2104 if ((bgcolor ^ fgcolor) & 1) {
2105 src = (unsigned long *)((unsigned long)data & ~(BYTES_PER_LONG-1));
2106 src_idx = ((unsigned long)data & (BYTES_PER_LONG-1))*8;
2107 if (fgcolor & 1)
2108 bitcpy(dst, dst_idx, src, src_idx, n);
2109 else
2110 bitcpy_not(dst, dst_idx, src, src_idx, n);
2111 /* set or clear */
2112 } else
2113 bitfill32(dst, dst_idx, fgcolor & 1 ? ~0 : 0, n);
2114 if (!--bpp)
2115 break;
2116 bgcolor >>= 1;
2117 fgcolor >>= 1;
2118 dst_idx += next_plane*8;
2119 }
2120 }
2121
2122
2123 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
2124 {
2125 struct amifb_par *par = (struct amifb_par *)info->par;
2126 int x2, y2;
2127 unsigned long *dst;
2128 int dst_idx;
2129 const char *src;
2130 u32 dx, dy, width, height, pitch;
2131
2132 /*
2133 * We could use hardware clipping but on many cards you get around
2134 * hardware clipping by writing to framebuffer directly like we are
2135 * doing here.
2136 */
2137 x2 = image->dx + image->width;
2138 y2 = image->dy + image->height;
2139 dx = image->dx;
2140 dy = image->dy;
2141 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2142 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2143 width = x2 - dx;
2144 height = y2 - dy;
2145
2146 if (image->depth == 1) {
2147 dst = (unsigned long *)
2148 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2149 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2150 dst_idx += dy*par->next_line*8+dx;
2151 src = image->data;
2152 pitch = (image->width+7)/8;
2153 while (height--) {
2154 expand_one_line(info->var.bits_per_pixel,
2155 par->next_plane, dst, dst_idx, width,
2156 src, image->bg_color,
2157 image->fg_color);
2158 dst_idx += par->next_line*8;
2159 src += pitch;
2160 }
2161 } else {
2162 c2p_planar(info->screen_base, image->data, dx, dy, width,
2163 height, par->next_line, par->next_plane,
2164 image->width, info->var.bits_per_pixel);
2165 }
2166 }
2167
2168
2169 /*
2170 * Amiga Frame Buffer Specific ioctls
2171 */
2172
2173 static int amifb_ioctl(struct fb_info *info,
2174 unsigned int cmd, unsigned long arg)
2175 {
2176 union {
2177 struct fb_fix_cursorinfo fix;
2178 struct fb_var_cursorinfo var;
2179 struct fb_cursorstate state;
2180 } crsr;
2181 void __user *argp = (void __user *)arg;
2182 int i;
2183
2184 switch (cmd) {
2185 case FBIOGET_FCURSORINFO:
2186 i = ami_get_fix_cursorinfo(&crsr.fix);
2187 if (i)
2188 return i;
2189 return copy_to_user(argp, &crsr.fix,
2190 sizeof(crsr.fix)) ? -EFAULT : 0;
2191
2192 case FBIOGET_VCURSORINFO:
2193 i = ami_get_var_cursorinfo(&crsr.var,
2194 ((struct fb_var_cursorinfo __user *)arg)->data);
2195 if (i)
2196 return i;
2197 return copy_to_user(argp, &crsr.var,
2198 sizeof(crsr.var)) ? -EFAULT : 0;
2199
2200 case FBIOPUT_VCURSORINFO:
2201 if (copy_from_user(&crsr.var, argp, sizeof(crsr.var)))
2202 return -EFAULT;
2203 return ami_set_var_cursorinfo(&crsr.var,
2204 ((struct fb_var_cursorinfo __user *)arg)->data);
2205
2206 case FBIOGET_CURSORSTATE:
2207 i = ami_get_cursorstate(&crsr.state);
2208 if (i)
2209 return i;
2210 return copy_to_user(argp, &crsr.state,
2211 sizeof(crsr.state)) ? -EFAULT : 0;
2212
2213 case FBIOPUT_CURSORSTATE:
2214 if (copy_from_user(&crsr.state, argp,
2215 sizeof(crsr.state)))
2216 return -EFAULT;
2217 return ami_set_cursorstate(&crsr.state);
2218 }
2219 return -EINVAL;
2220 }
2221
2222
2223 /*
2224 * Allocate, Clear and Align a Block of Chip Memory
2225 */
2226
2227 static u_long unaligned_chipptr = 0;
2228
2229 static inline u_long __init chipalloc(u_long size)
2230 {
2231 size += PAGE_SIZE-1;
2232 if (!(unaligned_chipptr = (u_long)amiga_chip_alloc(size,
2233 "amifb [RAM]")))
2234 panic("No Chip RAM for frame buffer");
2235 memset((void *)unaligned_chipptr, 0, size);
2236 return PAGE_ALIGN(unaligned_chipptr);
2237 }
2238
2239 static inline void chipfree(void)
2240 {
2241 if (unaligned_chipptr)
2242 amiga_chip_free((void *)unaligned_chipptr);
2243 }
2244
2245
2246 /*
2247 * Initialisation
2248 */
2249
2250 static int __init amifb_probe(struct platform_device *pdev)
2251 {
2252 int tag, i, err = 0;
2253 u_long chipptr;
2254 u_int defmode;
2255
2256 #ifndef MODULE
2257 char *option = NULL;
2258
2259 if (fb_get_options("amifb", &option)) {
2260 amifb_video_off();
2261 return -ENODEV;
2262 }
2263 amifb_setup(option);
2264 #endif
2265 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2266
2267 switch (amiga_chipset) {
2268 #ifdef CONFIG_FB_AMIGA_OCS
2269 case CS_OCS:
2270 strcat(fb_info.fix.id, "OCS");
2271 default_chipset:
2272 chipset = TAG_OCS;
2273 maxdepth[TAG_SHRES] = 0; /* OCS means no SHRES */
2274 maxdepth[TAG_HIRES] = 4;
2275 maxdepth[TAG_LORES] = 6;
2276 maxfmode = TAG_FMODE_1;
2277 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2278 : DEFMODE_NTSC;
2279 fb_info.fix.smem_len = VIDEOMEMSIZE_OCS;
2280 break;
2281 #endif /* CONFIG_FB_AMIGA_OCS */
2282
2283 #ifdef CONFIG_FB_AMIGA_ECS
2284 case CS_ECS:
2285 strcat(fb_info.fix.id, "ECS");
2286 chipset = TAG_ECS;
2287 maxdepth[TAG_SHRES] = 2;
2288 maxdepth[TAG_HIRES] = 4;
2289 maxdepth[TAG_LORES] = 6;
2290 maxfmode = TAG_FMODE_1;
2291 if (AMIGAHW_PRESENT(AMBER_FF))
2292 defmode = amiga_vblank == 50 ? DEFMODE_AMBER_PAL
2293 : DEFMODE_AMBER_NTSC;
2294 else
2295 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2296 : DEFMODE_NTSC;
2297 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2298 VIDEOMEMSIZE_ECS_1M)
2299 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_2M;
2300 else
2301 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_1M;
2302 break;
2303 #endif /* CONFIG_FB_AMIGA_ECS */
2304
2305 #ifdef CONFIG_FB_AMIGA_AGA
2306 case CS_AGA:
2307 strcat(fb_info.fix.id, "AGA");
2308 chipset = TAG_AGA;
2309 maxdepth[TAG_SHRES] = 8;
2310 maxdepth[TAG_HIRES] = 8;
2311 maxdepth[TAG_LORES] = 8;
2312 maxfmode = TAG_FMODE_4;
2313 defmode = DEFMODE_AGA;
2314 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2315 VIDEOMEMSIZE_AGA_1M)
2316 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_2M;
2317 else
2318 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_1M;
2319 break;
2320 #endif /* CONFIG_FB_AMIGA_AGA */
2321
2322 default:
2323 #ifdef CONFIG_FB_AMIGA_OCS
2324 printk("Unknown graphics chipset, defaulting to OCS\n");
2325 strcat(fb_info.fix.id, "Unknown");
2326 goto default_chipset;
2327 #else /* CONFIG_FB_AMIGA_OCS */
2328 err = -ENODEV;
2329 goto amifb_error;
2330 #endif /* CONFIG_FB_AMIGA_OCS */
2331 break;
2332 }
2333
2334 /*
2335 * Calculate the Pixel Clock Values for this Machine
2336 */
2337
2338 {
2339 u_long tmp = DIVUL(200000000000ULL, amiga_eclock);
2340
2341 pixclock[TAG_SHRES] = (tmp + 4) / 8; /* SHRES: 35 ns / 28 MHz */
2342 pixclock[TAG_HIRES] = (tmp + 2) / 4; /* HIRES: 70 ns / 14 MHz */
2343 pixclock[TAG_LORES] = (tmp + 1) / 2; /* LORES: 140 ns / 7 MHz */
2344 }
2345
2346 /*
2347 * Replace the Tag Values with the Real Pixel Clock Values
2348 */
2349
2350 for (i = 0; i < NUM_TOTAL_MODES; i++) {
2351 struct fb_videomode *mode = &ami_modedb[i];
2352 tag = mode->pixclock;
2353 if (tag == TAG_SHRES || tag == TAG_HIRES || tag == TAG_LORES) {
2354 mode->pixclock = pixclock[tag];
2355 }
2356 }
2357
2358 /*
2359 * These monitor specs are for a typical Amiga monitor (e.g. A1960)
2360 */
2361 if (fb_info.monspecs.hfmin == 0) {
2362 fb_info.monspecs.hfmin = 15000;
2363 fb_info.monspecs.hfmax = 38000;
2364 fb_info.monspecs.vfmin = 49;
2365 fb_info.monspecs.vfmax = 90;
2366 }
2367
2368 fb_info.fbops = &amifb_ops;
2369 fb_info.par = &currentpar;
2370 fb_info.flags = FBINFO_DEFAULT;
2371 fb_info.device = &pdev->dev;
2372
2373 if (!fb_find_mode(&fb_info.var, &fb_info, mode_option, ami_modedb,
2374 NUM_TOTAL_MODES, &ami_modedb[defmode], 4)) {
2375 err = -EINVAL;
2376 goto amifb_error;
2377 }
2378
2379 fb_videomode_to_modelist(ami_modedb, NUM_TOTAL_MODES,
2380 &fb_info.modelist);
2381
2382 round_down_bpp = 0;
2383 chipptr = chipalloc(fb_info.fix.smem_len+
2384 SPRITEMEMSIZE+
2385 DUMMYSPRITEMEMSIZE+
2386 COPINITSIZE+
2387 4*COPLISTSIZE);
2388
2389 assignchunk(videomemory, u_long, chipptr, fb_info.fix.smem_len);
2390 assignchunk(spritememory, u_long, chipptr, SPRITEMEMSIZE);
2391 assignchunk(dummysprite, u_short *, chipptr, DUMMYSPRITEMEMSIZE);
2392 assignchunk(copdisplay.init, copins *, chipptr, COPINITSIZE);
2393 assignchunk(copdisplay.list[0][0], copins *, chipptr, COPLISTSIZE);
2394 assignchunk(copdisplay.list[0][1], copins *, chipptr, COPLISTSIZE);
2395 assignchunk(copdisplay.list[1][0], copins *, chipptr, COPLISTSIZE);
2396 assignchunk(copdisplay.list[1][1], copins *, chipptr, COPLISTSIZE);
2397
2398 /*
2399 * access the videomem with writethrough cache
2400 */
2401 fb_info.fix.smem_start = (u_long)ZTWO_PADDR(videomemory);
2402 videomemory = (u_long)ioremap_writethrough(fb_info.fix.smem_start,
2403 fb_info.fix.smem_len);
2404 if (!videomemory) {
2405 printk("amifb: WARNING! unable to map videomem cached writethrough\n");
2406 fb_info.screen_base = (char *)ZTWO_VADDR(fb_info.fix.smem_start);
2407 } else
2408 fb_info.screen_base = (char *)videomemory;
2409
2410 memset(dummysprite, 0, DUMMYSPRITEMEMSIZE);
2411
2412 /*
2413 * Enable Display DMA
2414 */
2415
2416 custom.dmacon = DMAF_SETCLR | DMAF_MASTER | DMAF_RASTER | DMAF_COPPER |
2417 DMAF_BLITTER | DMAF_SPRITE;
2418
2419 /*
2420 * Make sure the Copper has something to do
2421 */
2422
2423 ami_init_copper();
2424
2425 if (request_irq(IRQ_AMIGA_COPPER, amifb_interrupt, 0,
2426 "fb vertb handler", &currentpar)) {
2427 err = -EBUSY;
2428 goto amifb_error;
2429 }
2430
2431 err = fb_alloc_cmap(&fb_info.cmap, 1<<fb_info.var.bits_per_pixel, 0);
2432 if (err)
2433 goto amifb_error;
2434
2435 if (register_framebuffer(&fb_info) < 0) {
2436 err = -EINVAL;
2437 goto amifb_error;
2438 }
2439
2440 printk("fb%d: %s frame buffer device, using %dK of video memory\n",
2441 fb_info.node, fb_info.fix.id, fb_info.fix.smem_len>>10);
2442
2443 return 0;
2444
2445 amifb_error:
2446 amifb_deinit(pdev);
2447 return err;
2448 }
2449
2450 static void amifb_deinit(struct platform_device *pdev)
2451 {
2452 if (fb_info.cmap.len)
2453 fb_dealloc_cmap(&fb_info.cmap);
2454 fb_dealloc_cmap(&fb_info.cmap);
2455 chipfree();
2456 if (videomemory)
2457 iounmap((void*)videomemory);
2458 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2459 }
2460
2461
2462 /*
2463 * Blank the display.
2464 */
2465
2466 static int amifb_blank(int blank, struct fb_info *info)
2467 {
2468 do_blank = blank ? blank : -1;
2469
2470 return 0;
2471 }
2472
2473 /*
2474 * Flash the cursor (called by VBlank interrupt)
2475 */
2476
2477 static int flash_cursor(void)
2478 {
2479 static int cursorcount = 1;
2480
2481 if (cursormode == FB_CURSOR_FLASH) {
2482 if (!--cursorcount) {
2483 cursorstate = -cursorstate;
2484 cursorcount = cursorrate;
2485 if (!is_blanked)
2486 return 1;
2487 }
2488 }
2489 return 0;
2490 }
2491
2492 /*
2493 * VBlank Display Interrupt
2494 */
2495
2496 static irqreturn_t amifb_interrupt(int irq, void *dev_id)
2497 {
2498 if (do_vmode_pan || do_vmode_full)
2499 ami_update_display();
2500
2501 if (do_vmode_full)
2502 ami_init_display();
2503
2504 if (do_vmode_pan) {
2505 flash_cursor();
2506 ami_rebuild_copper();
2507 do_cursor = do_vmode_pan = 0;
2508 } else if (do_cursor) {
2509 flash_cursor();
2510 ami_set_sprite();
2511 do_cursor = 0;
2512 } else {
2513 if (flash_cursor())
2514 ami_set_sprite();
2515 }
2516
2517 if (do_blank) {
2518 ami_do_blank();
2519 do_blank = 0;
2520 }
2521
2522 if (do_vmode_full) {
2523 ami_reinit_copper();
2524 do_vmode_full = 0;
2525 }
2526 return IRQ_HANDLED;
2527 }
2528
2529 /* --------------------------- Hardware routines --------------------------- */
2530
2531 /*
2532 * Get the video params out of `var'. If a value doesn't fit, round
2533 * it up, if it's too big, return -EINVAL.
2534 */
2535
2536 static int ami_decode_var(struct fb_var_screeninfo *var,
2537 struct amifb_par *par)
2538 {
2539 u_short clk_shift, line_shift;
2540 u_long maxfetchstop, fstrt, fsize, fconst, xres_n, yres_n;
2541 u_int htotal, vtotal;
2542
2543 /*
2544 * Find a matching Pixel Clock
2545 */
2546
2547 for (clk_shift = TAG_SHRES; clk_shift <= TAG_LORES; clk_shift++)
2548 if (var->pixclock <= pixclock[clk_shift])
2549 break;
2550 if (clk_shift > TAG_LORES) {
2551 DPRINTK("pixclock too high\n");
2552 return -EINVAL;
2553 }
2554 par->clk_shift = clk_shift;
2555
2556 /*
2557 * Check the Geometry Values
2558 */
2559
2560 if ((par->xres = var->xres) < 64)
2561 par->xres = 64;
2562 if ((par->yres = var->yres) < 64)
2563 par->yres = 64;
2564 if ((par->vxres = var->xres_virtual) < par->xres)
2565 par->vxres = par->xres;
2566 if ((par->vyres = var->yres_virtual) < par->yres)
2567 par->vyres = par->yres;
2568
2569 par->bpp = var->bits_per_pixel;
2570 if (!var->nonstd) {
2571 if (par->bpp < 1)
2572 par->bpp = 1;
2573 if (par->bpp > maxdepth[clk_shift]) {
2574 if (round_down_bpp && maxdepth[clk_shift])
2575 par->bpp = maxdepth[clk_shift];
2576 else {
2577 DPRINTK("invalid bpp\n");
2578 return -EINVAL;
2579 }
2580 }
2581 } else if (var->nonstd == FB_NONSTD_HAM) {
2582 if (par->bpp < 6)
2583 par->bpp = 6;
2584 if (par->bpp != 6) {
2585 if (par->bpp < 8)
2586 par->bpp = 8;
2587 if (par->bpp != 8 || !IS_AGA) {
2588 DPRINTK("invalid bpp for ham mode\n");
2589 return -EINVAL;
2590 }
2591 }
2592 } else {
2593 DPRINTK("unknown nonstd mode\n");
2594 return -EINVAL;
2595 }
2596
2597 /*
2598 * FB_VMODE_SMOOTH_XPAN will be cleared, if one of the folloing
2599 * checks failed and smooth scrolling is not possible
2600 */
2601
2602 par->vmode = var->vmode | FB_VMODE_SMOOTH_XPAN;
2603 switch (par->vmode & FB_VMODE_MASK) {
2604 case FB_VMODE_INTERLACED:
2605 line_shift = 0;
2606 break;
2607 case FB_VMODE_NONINTERLACED:
2608 line_shift = 1;
2609 break;
2610 case FB_VMODE_DOUBLE:
2611 if (!IS_AGA) {
2612 DPRINTK("double mode only possible with aga\n");
2613 return -EINVAL;
2614 }
2615 line_shift = 2;
2616 break;
2617 default:
2618 DPRINTK("unknown video mode\n");
2619 return -EINVAL;
2620 break;
2621 }
2622 par->line_shift = line_shift;
2623
2624 /*
2625 * Vertical and Horizontal Timings
2626 */
2627
2628 xres_n = par->xres<<clk_shift;
2629 yres_n = par->yres<<line_shift;
2630 par->htotal = down8((var->left_margin+par->xres+var->right_margin+var->hsync_len)<<clk_shift);
2631 par->vtotal = down2(((var->upper_margin+par->yres+var->lower_margin+var->vsync_len)<<line_shift)+1);
2632
2633 if (IS_AGA)
2634 par->bplcon3 = sprpixmode[clk_shift];
2635 else
2636 par->bplcon3 = 0;
2637 if (var->sync & FB_SYNC_BROADCAST) {
2638 par->diwstop_h = par->htotal-((var->right_margin-var->hsync_len)<<clk_shift);
2639 if (IS_AGA)
2640 par->diwstop_h += mod4(var->hsync_len);
2641 else
2642 par->diwstop_h = down4(par->diwstop_h);
2643
2644 par->diwstrt_h = par->diwstop_h - xres_n;
2645 par->diwstop_v = par->vtotal-((var->lower_margin-var->vsync_len)<<line_shift);
2646 par->diwstrt_v = par->diwstop_v - yres_n;
2647 if (par->diwstop_h >= par->htotal+8) {
2648 DPRINTK("invalid diwstop_h\n");
2649 return -EINVAL;
2650 }
2651 if (par->diwstop_v > par->vtotal) {
2652 DPRINTK("invalid diwstop_v\n");
2653 return -EINVAL;
2654 }
2655
2656 if (!IS_OCS) {
2657 /* Initialize sync with some reasonable values for pwrsave */
2658 par->hsstrt = 160;
2659 par->hsstop = 320;
2660 par->vsstrt = 30;
2661 par->vsstop = 34;
2662 } else {
2663 par->hsstrt = 0;
2664 par->hsstop = 0;
2665 par->vsstrt = 0;
2666 par->vsstop = 0;
2667 }
2668 if (par->vtotal > (PAL_VTOTAL+NTSC_VTOTAL)/2) {
2669 /* PAL video mode */
2670 if (par->htotal != PAL_HTOTAL) {
2671 DPRINTK("htotal invalid for pal\n");
2672 return -EINVAL;
2673 }
2674 if (par->diwstrt_h < PAL_DIWSTRT_H) {
2675 DPRINTK("diwstrt_h too low for pal\n");
2676 return -EINVAL;
2677 }
2678 if (par->diwstrt_v < PAL_DIWSTRT_V) {
2679 DPRINTK("diwstrt_v too low for pal\n");
2680 return -EINVAL;
2681 }
2682 htotal = PAL_HTOTAL>>clk_shift;
2683 vtotal = PAL_VTOTAL>>1;
2684 if (!IS_OCS) {
2685 par->beamcon0 = BMC0_PAL;
2686 par->bplcon3 |= BPC3_BRDRBLNK;
2687 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2688 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2689 par->beamcon0 = BMC0_PAL;
2690 par->hsstop = 1;
2691 } else if (amiga_vblank != 50) {
2692 DPRINTK("pal not supported by this chipset\n");
2693 return -EINVAL;
2694 }
2695 } else {
2696 /* NTSC video mode
2697 * In the AGA chipset seems to be hardware bug with BPC3_BRDRBLNK
2698 * and NTSC activated, so than better let diwstop_h <= 1812
2699 */
2700 if (par->htotal != NTSC_HTOTAL) {
2701 DPRINTK("htotal invalid for ntsc\n");
2702 return -EINVAL;
2703 }
2704 if (par->diwstrt_h < NTSC_DIWSTRT_H) {
2705 DPRINTK("diwstrt_h too low for ntsc\n");
2706 return -EINVAL;
2707 }
2708 if (par->diwstrt_v < NTSC_DIWSTRT_V) {
2709 DPRINTK("diwstrt_v too low for ntsc\n");
2710 return -EINVAL;
2711 }
2712 htotal = NTSC_HTOTAL>>clk_shift;
2713 vtotal = NTSC_VTOTAL>>1;
2714 if (!IS_OCS) {
2715 par->beamcon0 = 0;
2716 par->bplcon3 |= BPC3_BRDRBLNK;
2717 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2718 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2719 par->beamcon0 = 0;
2720 par->hsstop = 1;
2721 } else if (amiga_vblank != 60) {
2722 DPRINTK("ntsc not supported by this chipset\n");
2723 return -EINVAL;
2724 }
2725 }
2726 if (IS_OCS) {
2727 if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
2728 par->diwstrt_v >= 512 || par->diwstop_v < 256) {
2729 DPRINTK("invalid position for display on ocs\n");
2730 return -EINVAL;
2731 }
2732 }
2733 } else if (!IS_OCS) {
2734 /* Programmable video mode */
2735 par->hsstrt = var->right_margin<<clk_shift;
2736 par->hsstop = (var->right_margin+var->hsync_len)<<clk_shift;
2737 par->diwstop_h = par->htotal - mod8(par->hsstrt) + 8 - (1 << clk_shift);
2738 if (!IS_AGA)
2739 par->diwstop_h = down4(par->diwstop_h) - 16;
2740 par->diwstrt_h = par->diwstop_h - xres_n;
2741 par->hbstop = par->diwstrt_h + 4;
2742 par->hbstrt = par->diwstop_h + 4;
2743 if (par->hbstrt >= par->htotal + 8)
2744 par->hbstrt -= par->htotal;
2745 par->hcenter = par->hsstrt + (par->htotal >> 1);
2746 par->vsstrt = var->lower_margin<<line_shift;
2747 par->vsstop = (var->lower_margin+var->vsync_len)<<line_shift;
2748 par->diwstop_v = par->vtotal;
2749 if ((par->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
2750 par->diwstop_v -= 2;
2751 par->diwstrt_v = par->diwstop_v - yres_n;
2752 par->vbstop = par->diwstrt_v - 2;
2753 par->vbstrt = par->diwstop_v - 2;
2754 if (par->vtotal > 2048) {
2755 DPRINTK("vtotal too high\n");
2756 return -EINVAL;
2757 }
2758 if (par->htotal > 2048) {
2759 DPRINTK("htotal too high\n");
2760 return -EINVAL;
2761 }
2762 par->bplcon3 |= BPC3_EXTBLKEN;
2763 par->beamcon0 = BMC0_HARDDIS | BMC0_VARVBEN | BMC0_LOLDIS |
2764 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARBEAMEN |
2765 BMC0_PAL | BMC0_VARCSYEN;
2766 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
2767 par->beamcon0 |= BMC0_HSYTRUE;
2768 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
2769 par->beamcon0 |= BMC0_VSYTRUE;
2770 if (var->sync & FB_SYNC_COMP_HIGH_ACT)
2771 par->beamcon0 |= BMC0_CSYTRUE;
2772 htotal = par->htotal>>clk_shift;
2773 vtotal = par->vtotal>>1;
2774 } else {
2775 DPRINTK("only broadcast modes possible for ocs\n");
2776 return -EINVAL;
2777 }
2778
2779 /*
2780 * Checking the DMA timing
2781 */
2782
2783 fconst = 16<<maxfmode<<clk_shift;
2784
2785 /*
2786 * smallest window start value without turn off other dma cycles
2787 * than sprite1-7, unless you change min_fstrt
2788 */
2789
2790
2791 fsize = ((maxfmode+clk_shift <= 1) ? fconst : 64);
2792 fstrt = downx(fconst, par->diwstrt_h-4) - fsize;
2793 if (fstrt < min_fstrt) {
2794 DPRINTK("fetch start too low\n");
2795 return -EINVAL;
2796 }
2797
2798 /*
2799 * smallest window start value where smooth scrolling is possible
2800 */
2801
2802 fstrt = downx(fconst, par->diwstrt_h-fconst+(1<<clk_shift)-4) - fsize;
2803 if (fstrt < min_fstrt)
2804 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2805
2806 maxfetchstop = down16(par->htotal - 80);
2807
2808 fstrt = downx(fconst, par->diwstrt_h-4) - 64 - fconst;
2809 fsize = upx(fconst, xres_n + modx(fconst, downx(1<<clk_shift, par->diwstrt_h-4)));
2810 if (fstrt + fsize > maxfetchstop)
2811 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2812
2813 fsize = upx(fconst, xres_n);
2814 if (fstrt + fsize > maxfetchstop) {
2815 DPRINTK("fetch stop too high\n");
2816 return -EINVAL;
2817 }
2818
2819 if (maxfmode + clk_shift <= 1) {
2820 fsize = up64(xres_n + fconst - 1);
2821 if (min_fstrt + fsize - 64 > maxfetchstop)
2822 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2823
2824 fsize = up64(xres_n);
2825 if (min_fstrt + fsize - 64 > maxfetchstop) {
2826 DPRINTK("fetch size too high\n");
2827 return -EINVAL;
2828 }
2829
2830 fsize -= 64;
2831 } else
2832 fsize -= fconst;
2833
2834 /*
2835 * Check if there is enough time to update the bitplane pointers for ywrap
2836 */
2837
2838 if (par->htotal-fsize-64 < par->bpp*64)
2839 par->vmode &= ~FB_VMODE_YWRAP;
2840
2841 /*
2842 * Bitplane calculations and check the Memory Requirements
2843 */
2844
2845 if (amifb_ilbm) {
2846 par->next_plane = div8(upx(16<<maxfmode, par->vxres));
2847 par->next_line = par->bpp*par->next_plane;
2848 if (par->next_line * par->vyres > fb_info.fix.smem_len) {
2849 DPRINTK("too few video mem\n");
2850 return -EINVAL;
2851 }
2852 } else {
2853 par->next_line = div8(upx(16<<maxfmode, par->vxres));
2854 par->next_plane = par->vyres*par->next_line;
2855 if (par->next_plane * par->bpp > fb_info.fix.smem_len) {
2856 DPRINTK("too few video mem\n");
2857 return -EINVAL;
2858 }
2859 }
2860
2861 /*
2862 * Hardware Register Values
2863 */
2864
2865 par->bplcon0 = BPC0_COLOR | bplpixmode[clk_shift];
2866 if (!IS_OCS)
2867 par->bplcon0 |= BPC0_ECSENA;
2868 if (par->bpp == 8)
2869 par->bplcon0 |= BPC0_BPU3;
2870 else
2871 par->bplcon0 |= par->bpp<<12;
2872 if (var->nonstd == FB_NONSTD_HAM)
2873 par->bplcon0 |= BPC0_HAM;
2874 if (var->sync & FB_SYNC_EXT)
2875 par->bplcon0 |= BPC0_ERSY;
2876
2877 if (IS_AGA)
2878 par->fmode = bplfetchmode[maxfmode];
2879
2880 switch (par->vmode & FB_VMODE_MASK) {
2881 case FB_VMODE_INTERLACED:
2882 par->bplcon0 |= BPC0_LACE;
2883 break;
2884 case FB_VMODE_DOUBLE:
2885 if (IS_AGA)
2886 par->fmode |= FMODE_SSCAN2 | FMODE_BSCAN2;
2887 break;
2888 }
2889
2890 if (!((par->vmode ^ var->vmode) & FB_VMODE_YWRAP)) {
2891 par->xoffset = var->xoffset;
2892 par->yoffset = var->yoffset;
2893 if (par->vmode & FB_VMODE_YWRAP) {
2894 if (par->xoffset || par->yoffset < 0 || par->yoffset >= par->vyres)
2895 par->xoffset = par->yoffset = 0;
2896 } else {
2897 if (par->xoffset < 0 || par->xoffset > upx(16<<maxfmode, par->vxres-par->xres) ||
2898 par->yoffset < 0 || par->yoffset > par->vyres-par->yres)
2899 par->xoffset = par->yoffset = 0;
2900 }
2901 } else
2902 par->xoffset = par->yoffset = 0;
2903
2904 par->crsr.crsr_x = par->crsr.crsr_y = 0;
2905 par->crsr.spot_x = par->crsr.spot_y = 0;
2906 par->crsr.height = par->crsr.width = 0;
2907
2908 return 0;
2909 }
2910
2911 /*
2912 * Fill the `var' structure based on the values in `par' and maybe
2913 * other values read out of the hardware.
2914 */
2915
2916 static int ami_encode_var(struct fb_var_screeninfo *var,
2917 struct amifb_par *par)
2918 {
2919 u_short clk_shift, line_shift;
2920
2921 memset(var, 0, sizeof(struct fb_var_screeninfo));
2922
2923 clk_shift = par->clk_shift;
2924 line_shift = par->line_shift;
2925
2926 var->xres = par->xres;
2927 var->yres = par->yres;
2928 var->xres_virtual = par->vxres;
2929 var->yres_virtual = par->vyres;
2930 var->xoffset = par->xoffset;
2931 var->yoffset = par->yoffset;
2932
2933 var->bits_per_pixel = par->bpp;
2934 var->grayscale = 0;
2935
2936 var->red.offset = 0;
2937 var->red.msb_right = 0;
2938 var->red.length = par->bpp;
2939 if (par->bplcon0 & BPC0_HAM)
2940 var->red.length -= 2;
2941 var->blue = var->green = var->red;
2942 var->transp.offset = 0;
2943 var->transp.length = 0;
2944 var->transp.msb_right = 0;
2945
2946 if (par->bplcon0 & BPC0_HAM)
2947 var->nonstd = FB_NONSTD_HAM;
2948 else
2949 var->nonstd = 0;
2950 var->activate = 0;
2951
2952 var->height = -1;
2953 var->width = -1;
2954
2955 var->pixclock = pixclock[clk_shift];
2956
2957 if (IS_AGA && par->fmode & FMODE_BSCAN2)
2958 var->vmode = FB_VMODE_DOUBLE;
2959 else if (par->bplcon0 & BPC0_LACE)
2960 var->vmode = FB_VMODE_INTERLACED;
2961 else
2962 var->vmode = FB_VMODE_NONINTERLACED;
2963
2964 if (!IS_OCS && par->beamcon0 & BMC0_VARBEAMEN) {
2965 var->hsync_len = (par->hsstop-par->hsstrt)>>clk_shift;
2966 var->right_margin = par->hsstrt>>clk_shift;
2967 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2968 var->vsync_len = (par->vsstop-par->vsstrt)>>line_shift;
2969 var->lower_margin = par->vsstrt>>line_shift;
2970 var->upper_margin = (par->vtotal>>line_shift) - var->yres - var->lower_margin - var->vsync_len;
2971 var->sync = 0;
2972 if (par->beamcon0 & BMC0_HSYTRUE)
2973 var->sync |= FB_SYNC_HOR_HIGH_ACT;
2974 if (par->beamcon0 & BMC0_VSYTRUE)
2975 var->sync |= FB_SYNC_VERT_HIGH_ACT;
2976 if (par->beamcon0 & BMC0_CSYTRUE)
2977 var->sync |= FB_SYNC_COMP_HIGH_ACT;
2978 } else {
2979 var->sync = FB_SYNC_BROADCAST;
2980 var->hsync_len = (152>>clk_shift) + mod4(par->diwstop_h);
2981 var->right_margin = ((par->htotal - down4(par->diwstop_h))>>clk_shift) + var->hsync_len;
2982 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2983 var->vsync_len = 4>>line_shift;
2984 var->lower_margin = ((par->vtotal - par->diwstop_v)>>line_shift) + var->vsync_len;
2985 var->upper_margin = (((par->vtotal - 2)>>line_shift) + 1) - var->yres -
2986 var->lower_margin - var->vsync_len;
2987 }
2988
2989 if (par->bplcon0 & BPC0_ERSY)
2990 var->sync |= FB_SYNC_EXT;
2991 if (par->vmode & FB_VMODE_YWRAP)
2992 var->vmode |= FB_VMODE_YWRAP;
2993
2994 return 0;
2995 }
2996
2997
2998 /*
2999 * Pan or Wrap the Display
3000 *
3001 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
3002 * in `var'.
3003 */
3004
3005 static void ami_pan_var(struct fb_var_screeninfo *var)
3006 {
3007 struct amifb_par *par = &currentpar;
3008
3009 par->xoffset = var->xoffset;
3010 par->yoffset = var->yoffset;
3011 if (var->vmode & FB_VMODE_YWRAP)
3012 par->vmode |= FB_VMODE_YWRAP;
3013 else
3014 par->vmode &= ~FB_VMODE_YWRAP;
3015
3016 do_vmode_pan = 0;
3017 ami_update_par();
3018 do_vmode_pan = 1;
3019 }
3020
3021 /*
3022 * Update hardware
3023 */
3024
3025 static int ami_update_par(void)
3026 {
3027 struct amifb_par *par = &currentpar;
3028 short clk_shift, vshift, fstrt, fsize, fstop, fconst, shift, move, mod;
3029
3030 clk_shift = par->clk_shift;
3031
3032 if (!(par->vmode & FB_VMODE_SMOOTH_XPAN))
3033 par->xoffset = upx(16<<maxfmode, par->xoffset);
3034
3035 fconst = 16<<maxfmode<<clk_shift;
3036 vshift = modx(16<<maxfmode, par->xoffset);
3037 fstrt = par->diwstrt_h - (vshift<<clk_shift) - 4;
3038 fsize = (par->xres+vshift)<<clk_shift;
3039 shift = modx(fconst, fstrt);
3040 move = downx(2<<maxfmode, div8(par->xoffset));
3041 if (maxfmode + clk_shift > 1) {
3042 fstrt = downx(fconst, fstrt) - 64;
3043 fsize = upx(fconst, fsize);
3044 fstop = fstrt + fsize - fconst;
3045 } else {
3046 mod = fstrt = downx(fconst, fstrt) - fconst;
3047 fstop = fstrt + upx(fconst, fsize) - 64;
3048 fsize = up64(fsize);
3049 fstrt = fstop - fsize + 64;
3050 if (fstrt < min_fstrt) {
3051 fstop += min_fstrt - fstrt;
3052 fstrt = min_fstrt;
3053 }
3054 move = move - div8((mod-fstrt)>>clk_shift);
3055 }
3056 mod = par->next_line - div8(fsize>>clk_shift);
3057 par->ddfstrt = fstrt;
3058 par->ddfstop = fstop;
3059 par->bplcon1 = hscroll2hw(shift);
3060 par->bpl2mod = mod;
3061 if (par->bplcon0 & BPC0_LACE)
3062 par->bpl2mod += par->next_line;
3063 if (IS_AGA && (par->fmode & FMODE_BSCAN2))
3064 par->bpl1mod = -div8(fsize>>clk_shift);
3065 else
3066 par->bpl1mod = par->bpl2mod;
3067
3068 if (par->yoffset) {
3069 par->bplpt0 = fb_info.fix.smem_start + par->next_line*par->yoffset + move;
3070 if (par->vmode & FB_VMODE_YWRAP) {
3071 if (par->yoffset > par->vyres-par->yres) {
3072 par->bplpt0wrap = fb_info.fix.smem_start + move;
3073 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v+par->vyres-par->yoffset))
3074 par->bplpt0wrap += par->next_line;
3075 }
3076 }
3077 } else
3078 par->bplpt0 = fb_info.fix.smem_start + move;
3079
3080 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v))
3081 par->bplpt0 += par->next_line;
3082
3083 return 0;
3084 }
3085
3086
3087 /*
3088 * Set a single color register. The values supplied are already
3089 * rounded down to the hardware's capabilities (according to the
3090 * entries in the var structure). Return != 0 for invalid regno.
3091 */
3092
3093 static int amifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
3094 u_int transp, struct fb_info *info)
3095 {
3096 if (IS_AGA) {
3097 if (regno > 255)
3098 return 1;
3099 } else if (currentpar.bplcon0 & BPC0_SHRES) {
3100 if (regno > 3)
3101 return 1;
3102 } else {
3103 if (regno > 31)
3104 return 1;
3105 }
3106 red >>= 8;
3107 green >>= 8;
3108 blue >>= 8;
3109 if (!regno) {
3110 red0 = red;
3111 green0 = green;
3112 blue0 = blue;
3113 }
3114
3115 /*
3116 * Update the corresponding Hardware Color Register, unless it's Color
3117 * Register 0 and the screen is blanked.
3118 *
3119 * VBlank is switched off to protect bplcon3 or ecs_palette[] from
3120 * being changed by ami_do_blank() during the VBlank.
3121 */
3122
3123 if (regno || !is_blanked) {
3124 #if defined(CONFIG_FB_AMIGA_AGA)
3125 if (IS_AGA) {
3126 u_short bplcon3 = currentpar.bplcon3;
3127 VBlankOff();
3128 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000);
3129 custom.color[regno&31] = rgb2hw8_high(red, green, blue);
3130 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000) | BPC3_LOCT;
3131 custom.color[regno&31] = rgb2hw8_low(red, green, blue);
3132 custom.bplcon3 = bplcon3;
3133 VBlankOn();
3134 } else
3135 #endif
3136 #if defined(CONFIG_FB_AMIGA_ECS)
3137 if (currentpar.bplcon0 & BPC0_SHRES) {
3138 u_short color, mask;
3139 int i;
3140
3141 mask = 0x3333;
3142 color = rgb2hw2(red, green, blue);
3143 VBlankOff();
3144 for (i = regno+12; i >= (int)regno; i -= 4)
3145 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3146 mask <<=2; color >>= 2;
3147 regno = down16(regno)+mul4(mod4(regno));
3148 for (i = regno+3; i >= (int)regno; i--)
3149 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3150 VBlankOn();
3151 } else
3152 #endif
3153 custom.color[regno] = rgb2hw4(red, green, blue);
3154 }
3155 return 0;
3156 }
3157
3158 static void ami_update_display(void)
3159 {
3160 struct amifb_par *par = &currentpar;
3161
3162 custom.bplcon1 = par->bplcon1;
3163 custom.bpl1mod = par->bpl1mod;
3164 custom.bpl2mod = par->bpl2mod;
3165 custom.ddfstrt = ddfstrt2hw(par->ddfstrt);
3166 custom.ddfstop = ddfstop2hw(par->ddfstop);
3167 }
3168
3169 /*
3170 * Change the video mode (called by VBlank interrupt)
3171 */
3172
3173 static void ami_init_display(void)
3174 {
3175 struct amifb_par *par = &currentpar;
3176 int i;
3177
3178 custom.bplcon0 = par->bplcon0 & ~BPC0_LACE;
3179 custom.bplcon2 = (IS_OCS ? 0 : BPC2_KILLEHB) | BPC2_PF2P2 | BPC2_PF1P2;
3180 if (!IS_OCS) {
3181 custom.bplcon3 = par->bplcon3;
3182 if (IS_AGA)
3183 custom.bplcon4 = BPC4_ESPRM4 | BPC4_OSPRM4;
3184 if (par->beamcon0 & BMC0_VARBEAMEN) {
3185 custom.htotal = htotal2hw(par->htotal);
3186 custom.hbstrt = hbstrt2hw(par->hbstrt);
3187 custom.hbstop = hbstop2hw(par->hbstop);
3188 custom.hsstrt = hsstrt2hw(par->hsstrt);
3189 custom.hsstop = hsstop2hw(par->hsstop);
3190 custom.hcenter = hcenter2hw(par->hcenter);
3191 custom.vtotal = vtotal2hw(par->vtotal);
3192 custom.vbstrt = vbstrt2hw(par->vbstrt);
3193 custom.vbstop = vbstop2hw(par->vbstop);
3194 custom.vsstrt = vsstrt2hw(par->vsstrt);
3195 custom.vsstop = vsstop2hw(par->vsstop);
3196 }
3197 }
3198 if (!IS_OCS || par->hsstop)
3199 custom.beamcon0 = par->beamcon0;
3200 if (IS_AGA)
3201 custom.fmode = par->fmode;
3202
3203 /*
3204 * The minimum period for audio depends on htotal
3205 */
3206
3207 amiga_audio_min_period = div16(par->htotal);
3208
3209 is_lace = par->bplcon0 & BPC0_LACE ? 1 : 0;
3210 #if 1
3211 if (is_lace) {
3212 i = custom.vposr >> 15;
3213 } else {
3214 custom.vposw = custom.vposr | 0x8000;
3215 i = 1;
3216 }
3217 #else
3218 i = 1;
3219 custom.vposw = custom.vposr | 0x8000;
3220 #endif
3221 custom.cop2lc = (u_short *)ZTWO_PADDR(copdisplay.list[currentcop][i]);
3222 }
3223
3224 /*
3225 * (Un)Blank the screen (called by VBlank interrupt)
3226 */
3227
3228 static void ami_do_blank(void)
3229 {
3230 struct amifb_par *par = &currentpar;
3231 #if defined(CONFIG_FB_AMIGA_AGA)
3232 u_short bplcon3 = par->bplcon3;
3233 #endif
3234 u_char red, green, blue;
3235
3236 if (do_blank > 0) {
3237 custom.dmacon = DMAF_RASTER | DMAF_SPRITE;
3238 red = green = blue = 0;
3239 if (!IS_OCS && do_blank > 1) {
3240 switch (do_blank) {
3241 case FB_BLANK_VSYNC_SUSPEND:
3242 custom.hsstrt = hsstrt2hw(par->hsstrt);
3243 custom.hsstop = hsstop2hw(par->hsstop);
3244 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3245 custom.vsstop = vsstop2hw(par->vtotal+4);
3246 break;
3247 case FB_BLANK_HSYNC_SUSPEND:
3248 custom.hsstrt = hsstrt2hw(par->htotal+16);
3249 custom.hsstop = hsstop2hw(par->htotal+16);
3250 custom.vsstrt = vsstrt2hw(par->vsstrt);
3251 custom.vsstop = vsstrt2hw(par->vsstop);
3252 break;
3253 case FB_BLANK_POWERDOWN:
3254 custom.hsstrt = hsstrt2hw(par->htotal+16);
3255 custom.hsstop = hsstop2hw(par->htotal+16);
3256 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3257 custom.vsstop = vsstop2hw(par->vtotal+4);
3258 break;
3259 }
3260 if (!(par->beamcon0 & BMC0_VARBEAMEN)) {
3261 custom.htotal = htotal2hw(par->htotal);
3262 custom.vtotal = vtotal2hw(par->vtotal);
3263 custom.beamcon0 = BMC0_HARDDIS | BMC0_VARBEAMEN |
3264 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARCSYEN;
3265 }
3266 }
3267 } else {
3268 custom.dmacon = DMAF_SETCLR | DMAF_RASTER | DMAF_SPRITE;
3269 red = red0;
3270 green = green0;
3271 blue = blue0;
3272 if (!IS_OCS) {
3273 custom.hsstrt = hsstrt2hw(par->hsstrt);
3274 custom.hsstop = hsstop2hw(par->hsstop);
3275 custom.vsstrt = vsstrt2hw(par->vsstrt);
3276 custom.vsstop = vsstop2hw(par->vsstop);
3277 custom.beamcon0 = par->beamcon0;
3278 }
3279 }
3280 #if defined(CONFIG_FB_AMIGA_AGA)
3281 if (IS_AGA) {
3282 custom.bplcon3 = bplcon3;
3283 custom.color[0] = rgb2hw8_high(red, green, blue);
3284 custom.bplcon3 = bplcon3 | BPC3_LOCT;
3285 custom.color[0] = rgb2hw8_low(red, green, blue);
3286 custom.bplcon3 = bplcon3;
3287 } else
3288 #endif
3289 #if defined(CONFIG_FB_AMIGA_ECS)
3290 if (par->bplcon0 & BPC0_SHRES) {
3291 u_short color, mask;
3292 int i;
3293
3294 mask = 0x3333;
3295 color = rgb2hw2(red, green, blue);
3296 for (i = 12; i >= 0; i -= 4)
3297 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3298 mask <<=2; color >>= 2;
3299 for (i = 3; i >= 0; i--)
3300 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3301 } else
3302 #endif
3303 custom.color[0] = rgb2hw4(red, green, blue);
3304 is_blanked = do_blank > 0 ? do_blank : 0;
3305 }
3306
3307 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix)
3308 {
3309 struct amifb_par *par = &currentpar;
3310
3311 fix->crsr_width = fix->crsr_xsize = par->crsr.width;
3312 fix->crsr_height = fix->crsr_ysize = par->crsr.height;
3313 fix->crsr_color1 = 17;
3314 fix->crsr_color2 = 18;
3315 return 0;
3316 }
3317
3318 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
3319 {
3320 struct amifb_par *par = &currentpar;
3321 register u_short *lspr, *sspr;
3322 #ifdef __mc68000__
3323 register u_long datawords asm ("d2");
3324 #else
3325 register u_long datawords;
3326 #endif
3327 register short delta;
3328 register u_char color;
3329 short height, width, bits, words;
3330 int size, alloc;
3331
3332 size = par->crsr.height*par->crsr.width;
3333 alloc = var->height*var->width;
3334 var->height = par->crsr.height;
3335 var->width = par->crsr.width;
3336 var->xspot = par->crsr.spot_x;
3337 var->yspot = par->crsr.spot_y;
3338 if (size > var->height*var->width)
3339 return -ENAMETOOLONG;
3340 if (!access_ok(VERIFY_WRITE, data, size))
3341 return -EFAULT;
3342 delta = 1<<par->crsr.fmode;
3343 lspr = lofsprite + (delta<<1);
3344 if (par->bplcon0 & BPC0_LACE)
3345 sspr = shfsprite + (delta<<1);
3346 else
3347 sspr = NULL;
3348 for (height = (short)var->height-1; height >= 0; height--) {
3349 bits = 0; words = delta; datawords = 0;
3350 for (width = (short)var->width-1; width >= 0; width--) {
3351 if (bits == 0) {
3352 bits = 16; --words;
3353 #ifdef __mc68000__
3354 asm volatile ("movew %1@(%3:w:2),%0 ; swap %0 ; movew %1@+,%0"
3355 : "=d" (datawords), "=a" (lspr) : "1" (lspr), "d" (delta));
3356 #else
3357 datawords = (*(lspr+delta) << 16) | (*lspr++);
3358 #endif
3359 }
3360 --bits;
3361 #ifdef __mc68000__
3362 asm volatile (
3363 "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; "
3364 "swap %1 ; lslw #1,%1 ; roxlb #1,%0"
3365 : "=d" (color), "=d" (datawords) : "1" (datawords));
3366 #else
3367 color = (((datawords >> 30) & 2)
3368 | ((datawords >> 15) & 1));
3369 datawords <<= 1;
3370 #endif
3371 put_user(color, data++);
3372 }
3373 if (bits > 0) {
3374 --words; ++lspr;
3375 }
3376 while (--words >= 0)
3377 ++lspr;
3378 #ifdef __mc68000__
3379 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3380 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3381 #else
3382 lspr += delta;
3383 if (sspr) {
3384 u_short *tmp = lspr;
3385 lspr = sspr;
3386 sspr = tmp;
3387 }
3388 #endif
3389 }
3390 return 0;
3391 }
3392
3393 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
3394 {
3395 struct amifb_par *par = &currentpar;
3396 register u_short *lspr, *sspr;
3397 #ifdef __mc68000__
3398 register u_long datawords asm ("d2");
3399 #else
3400 register u_long datawords;
3401 #endif
3402 register short delta;
3403 u_short fmode;
3404 short height, width, bits, words;
3405
3406 if (!var->width)
3407 return -EINVAL;
3408 else if (var->width <= 16)
3409 fmode = TAG_FMODE_1;
3410 else if (var->width <= 32)
3411 fmode = TAG_FMODE_2;
3412 else if (var->width <= 64)
3413 fmode = TAG_FMODE_4;
3414 else
3415 return -EINVAL;
3416 if (fmode > maxfmode)
3417 return -EINVAL;
3418 if (!var->height)
3419 return -EINVAL;
3420 if (!access_ok(VERIFY_READ, data, var->width*var->height))
3421 return -EFAULT;
3422 delta = 1<<fmode;
3423 lofsprite = shfsprite = (u_short *)spritememory;
3424 lspr = lofsprite + (delta<<1);
3425 if (par->bplcon0 & BPC0_LACE) {
3426 if (((var->height+4)<<fmode<<2) > SPRITEMEMSIZE)
3427 return -EINVAL;
3428 memset(lspr, 0, (var->height+4)<<fmode<<2);
3429 shfsprite += ((var->height+5)&-2)<<fmode;
3430 sspr = shfsprite + (delta<<1);
3431 } else {
3432 if (((var->height+2)<<fmode<<2) > SPRITEMEMSIZE)
3433 return -EINVAL;
3434 memset(lspr, 0, (var->height+2)<<fmode<<2);
3435 sspr = NULL;
3436 }
3437 for (height = (short)var->height-1; height >= 0; height--) {
3438 bits = 16; words = delta; datawords = 0;
3439 for (width = (short)var->width-1; width >= 0; width--) {
3440 unsigned long tdata = 0;
3441 get_user(tdata, data);
3442 data++;
3443 #ifdef __mc68000__
3444 asm volatile (
3445 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0 ; "
3446 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0"
3447 : "=d" (datawords)
3448 : "0" (datawords), "d" (tdata));
3449 #else
3450 datawords = ((datawords << 1) & 0xfffefffe);
3451 datawords |= tdata & 1;
3452 datawords |= (tdata & 2) << (16-1);
3453 #endif
3454 if (--bits == 0) {
3455 bits = 16; --words;
3456 #ifdef __mc68000__
3457 asm volatile ("swap %2 ; movew %2,%0@(%3:w:2) ; swap %2 ; movew %2,%0@+"
3458 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta));
3459 #else
3460 *(lspr+delta) = (u_short) (datawords >> 16);
3461 *lspr++ = (u_short) (datawords & 0xffff);
3462 #endif
3463 }
3464 }
3465 if (bits < 16) {
3466 --words;
3467 #ifdef __mc68000__
3468 asm volatile (
3469 "swap %2 ; lslw %4,%2 ; movew %2,%0@(%3:w:2) ; "
3470 "swap %2 ; lslw %4,%2 ; movew %2,%0@+"
3471 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta), "d" (bits));
3472 #else
3473 *(lspr+delta) = (u_short) (datawords >> (16+bits));
3474 *lspr++ = (u_short) ((datawords & 0x0000ffff) >> bits);
3475 #endif
3476 }
3477 while (--words >= 0) {
3478 #ifdef __mc68000__
3479 asm volatile ("moveql #0,%%d0 ; movew %%d0,%0@(%2:w:2) ; movew %%d0,%0@+"
3480 : "=a" (lspr) : "0" (lspr), "d" (delta) : "d0");
3481 #else
3482 *(lspr+delta) = 0;
3483 *lspr++ = 0;
3484 #endif
3485 }
3486 #ifdef __mc68000__
3487 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3488 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3489 #else
3490 lspr += delta;
3491 if (sspr) {
3492 u_short *tmp = lspr;
3493 lspr = sspr;
3494 sspr = tmp;
3495 }
3496 #endif
3497 }
3498 par->crsr.height = var->height;
3499 par->crsr.width = var->width;
3500 par->crsr.spot_x = var->xspot;
3501 par->crsr.spot_y = var->yspot;
3502 par->crsr.fmode = fmode;
3503 if (IS_AGA) {
3504 par->fmode &= ~(FMODE_SPAGEM | FMODE_SPR32);
3505 par->fmode |= sprfetchmode[fmode];
3506 custom.fmode = par->fmode;
3507 }
3508 return 0;
3509 }
3510
3511 static int ami_get_cursorstate(struct fb_cursorstate *state)
3512 {
3513 struct amifb_par *par = &currentpar;
3514
3515 state->xoffset = par->crsr.crsr_x;
3516 state->yoffset = par->crsr.crsr_y;
3517 state->mode = cursormode;
3518 return 0;
3519 }
3520
3521 static int ami_set_cursorstate(struct fb_cursorstate *state)
3522 {
3523 struct amifb_par *par = &currentpar;
3524
3525 par->crsr.crsr_x = state->xoffset;
3526 par->crsr.crsr_y = state->yoffset;
3527 if ((cursormode = state->mode) == FB_CURSOR_OFF)
3528 cursorstate = -1;
3529 do_cursor = 1;
3530 return 0;
3531 }
3532
3533 static void ami_set_sprite(void)
3534 {
3535 struct amifb_par *par = &currentpar;
3536 copins *copl, *cops;
3537 u_short hs, vs, ve;
3538 u_long pl, ps, pt;
3539 short mx, my;
3540
3541 cops = copdisplay.list[currentcop][0];
3542 copl = copdisplay.list[currentcop][1];
3543 ps = pl = ZTWO_PADDR(dummysprite);
3544 mx = par->crsr.crsr_x-par->crsr.spot_x;
3545 my = par->crsr.crsr_y-par->crsr.spot_y;
3546 if (!(par->vmode & FB_VMODE_YWRAP)) {
3547 mx -= par->xoffset;
3548 my -= par->yoffset;
3549 }
3550 if (!is_blanked && cursorstate > 0 && par->crsr.height > 0 &&
3551 mx > -(short)par->crsr.width && mx < par->xres &&
3552 my > -(short)par->crsr.height && my < par->yres) {
3553 pl = ZTWO_PADDR(lofsprite);
3554 hs = par->diwstrt_h + (mx<<par->clk_shift) - 4;
3555 vs = par->diwstrt_v + (my<<par->line_shift);
3556 ve = vs + (par->crsr.height<<par->line_shift);
3557 if (par->bplcon0 & BPC0_LACE) {
3558 ps = ZTWO_PADDR(shfsprite);
3559 lofsprite[0] = spr2hw_pos(vs, hs);
3560 shfsprite[0] = spr2hw_pos(vs+1, hs);
3561 if (mod2(vs)) {
3562 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3563 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve+1);
3564 pt = pl; pl = ps; ps = pt;
3565 } else {
3566 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve+1);
3567 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve);
3568 }
3569 } else {
3570 lofsprite[0] = spr2hw_pos(vs, hs) | (IS_AGA && (par->fmode & FMODE_BSCAN2) ? 0x80 : 0);
3571 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3572 }
3573 }
3574 copl[cop_spr0ptrh].w[1] = highw(pl);
3575 copl[cop_spr0ptrl].w[1] = loww(pl);
3576 if (par->bplcon0 & BPC0_LACE) {
3577 cops[cop_spr0ptrh].w[1] = highw(ps);
3578 cops[cop_spr0ptrl].w[1] = loww(ps);
3579 }
3580 }
3581
3582
3583 /*
3584 * Initialise the Copper Initialisation List
3585 */
3586
3587 static void __init ami_init_copper(void)
3588 {
3589 copins *cop = copdisplay.init;
3590 u_long p;
3591 int i;
3592
3593 if (!IS_OCS) {
3594 (cop++)->l = CMOVE(BPC0_COLOR | BPC0_SHRES | BPC0_ECSENA, bplcon0);
3595 (cop++)->l = CMOVE(0x0181, diwstrt);
3596 (cop++)->l = CMOVE(0x0281, diwstop);
3597 (cop++)->l = CMOVE(0x0000, diwhigh);
3598 } else
3599 (cop++)->l = CMOVE(BPC0_COLOR, bplcon0);
3600 p = ZTWO_PADDR(dummysprite);
3601 for (i = 0; i < 8; i++) {
3602 (cop++)->l = CMOVE(0, spr[i].pos);
3603 (cop++)->l = CMOVE(highw(p), sprpt[i]);
3604 (cop++)->l = CMOVE2(loww(p), sprpt[i]);
3605 }
3606
3607 (cop++)->l = CMOVE(IF_SETCLR | IF_COPER, intreq);
3608 copdisplay.wait = cop;
3609 (cop++)->l = CEND;
3610 (cop++)->l = CMOVE(0, copjmp2);
3611 cop->l = CEND;
3612
3613 custom.cop1lc = (u_short *)ZTWO_PADDR(copdisplay.init);
3614 custom.copjmp1 = 0;
3615 }
3616
3617 static void ami_reinit_copper(void)
3618 {
3619 struct amifb_par *par = &currentpar;
3620
3621 copdisplay.init[cip_bplcon0].w[1] = ~(BPC0_BPU3 | BPC0_BPU2 | BPC0_BPU1 | BPC0_BPU0) & par->bplcon0;
3622 copdisplay.wait->l = CWAIT(32, par->diwstrt_v-4);
3623 }
3624
3625 /*
3626 * Build the Copper List
3627 */
3628
3629 static void ami_build_copper(void)
3630 {
3631 struct amifb_par *par = &currentpar;
3632 copins *copl, *cops;
3633 u_long p;
3634
3635 currentcop = 1 - currentcop;
3636
3637 copl = copdisplay.list[currentcop][1];
3638
3639 (copl++)->l = CWAIT(0, 10);
3640 (copl++)->l = CMOVE(par->bplcon0, bplcon0);
3641 (copl++)->l = CMOVE(0, sprpt[0]);
3642 (copl++)->l = CMOVE2(0, sprpt[0]);
3643
3644 if (par->bplcon0 & BPC0_LACE) {
3645 cops = copdisplay.list[currentcop][0];
3646
3647 (cops++)->l = CWAIT(0, 10);
3648 (cops++)->l = CMOVE(par->bplcon0, bplcon0);
3649 (cops++)->l = CMOVE(0, sprpt[0]);
3650 (cops++)->l = CMOVE2(0, sprpt[0]);
3651
3652 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v+1), diwstrt);
3653 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v+1), diwstop);
3654 (cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3655 (cops++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3656 if (!IS_OCS) {
3657 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v+1,
3658 par->diwstop_h, par->diwstop_v+1), diwhigh);
3659 (cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3660 par->diwstop_h, par->diwstop_v), diwhigh);
3661 #if 0
3662 if (par->beamcon0 & BMC0_VARBEAMEN) {
3663 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3664 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt+1), vbstrt);
3665 (copl++)->l = CMOVE(vbstop2hw(par->vbstop+1), vbstop);
3666 (cops++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3667 (cops++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3668 (cops++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3669 }
3670 #endif
3671 }
3672 p = ZTWO_PADDR(copdisplay.list[currentcop][0]);
3673 (copl++)->l = CMOVE(highw(p), cop2lc);
3674 (copl++)->l = CMOVE2(loww(p), cop2lc);
3675 p = ZTWO_PADDR(copdisplay.list[currentcop][1]);
3676 (cops++)->l = CMOVE(highw(p), cop2lc);
3677 (cops++)->l = CMOVE2(loww(p), cop2lc);
3678 copdisplay.rebuild[0] = cops;
3679 } else {
3680 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3681 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3682 if (!IS_OCS) {
3683 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3684 par->diwstop_h, par->diwstop_v), diwhigh);
3685 #if 0
3686 if (par->beamcon0 & BMC0_VARBEAMEN) {
3687 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3688 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3689 (copl++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3690 }
3691 #endif
3692 }
3693 }
3694 copdisplay.rebuild[1] = copl;
3695
3696 ami_update_par();
3697 ami_rebuild_copper();
3698 }
3699
3700 /*
3701 * Rebuild the Copper List
3702 *
3703 * We only change the things that are not static
3704 */
3705
3706 static void ami_rebuild_copper(void)
3707 {
3708 struct amifb_par *par = &currentpar;
3709 copins *copl, *cops;
3710 u_short line, h_end1, h_end2;
3711 short i;
3712 u_long p;
3713
3714 if (IS_AGA && maxfmode + par->clk_shift == 0)
3715 h_end1 = par->diwstrt_h-64;
3716 else
3717 h_end1 = par->htotal-32;
3718 h_end2 = par->ddfstop+64;
3719
3720 ami_set_sprite();
3721
3722 copl = copdisplay.rebuild[1];
3723 p = par->bplpt0;
3724 if (par->vmode & FB_VMODE_YWRAP) {
3725 if ((par->vyres-par->yoffset) != 1 || !mod2(par->diwstrt_v)) {
3726 if (par->yoffset > par->vyres-par->yres) {
3727 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3728 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3729 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3730 }
3731 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 1;
3732 while (line >= 512) {
3733 (copl++)->l = CWAIT(h_end1, 510);
3734 line -= 512;
3735 }
3736 if (line >= 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3737 (copl++)->l = CWAIT(h_end1, line);
3738 else
3739 (copl++)->l = CWAIT(h_end2, line);
3740 p = par->bplpt0wrap;
3741 }
3742 } else p = par->bplpt0wrap;
3743 }
3744 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3745 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3746 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3747 }
3748 copl->l = CEND;
3749
3750 if (par->bplcon0 & BPC0_LACE) {
3751 cops = copdisplay.rebuild[0];
3752 p = par->bplpt0;
3753 if (mod2(par->diwstrt_v))
3754 p -= par->next_line;
3755 else
3756 p += par->next_line;
3757 if (par->vmode & FB_VMODE_YWRAP) {
3758 if ((par->vyres-par->yoffset) != 1 || mod2(par->diwstrt_v)) {
3759 if (par->yoffset > par->vyres-par->yres+1) {
3760 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3761 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3762 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3763 }
3764 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 2;
3765 while (line >= 512) {
3766 (cops++)->l = CWAIT(h_end1, 510);
3767 line -= 512;
3768 }
3769 if (line > 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3770 (cops++)->l = CWAIT(h_end1, line);
3771 else
3772 (cops++)->l = CWAIT(h_end2, line);
3773 p = par->bplpt0wrap;
3774 if (mod2(par->diwstrt_v+par->vyres-par->yoffset))
3775 p -= par->next_line;
3776 else
3777 p += par->next_line;
3778 }
3779 } else p = par->bplpt0wrap - par->next_line;
3780 }
3781 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3782 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3783 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3784 }
3785 cops->l = CEND;
3786 }
3787 }
3788
3789 static int __exit amifb_remove(struct platform_device *pdev)
3790 {
3791 unregister_framebuffer(&fb_info);
3792 amifb_deinit(pdev);
3793 amifb_video_off();
3794 return 0;
3795 }
3796
3797 static struct platform_driver amifb_driver = {
3798 .remove = __exit_p(amifb_remove),
3799 .driver = {
3800 .name = "amiga-video",
3801 .owner = THIS_MODULE,
3802 },
3803 };
3804
3805 static int __init amifb_init(void)
3806 {
3807 return platform_driver_probe(&amifb_driver, amifb_probe);
3808 }
3809
3810 module_init(amifb_init);
3811
3812 static void __exit amifb_exit(void)
3813 {
3814 platform_driver_unregister(&amifb_driver);
3815 }
3816
3817 module_exit(amifb_exit);
3818
3819 MODULE_LICENSE("GPL");
3820 MODULE_ALIAS("platform:amiga-video");