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ideapad_laptop: convert internal function calls to use ideapad_private as parameter
[linux-2.6.git] / drivers / video / amifb.c
bloba6780eecff0e6aefb864c737ad12a2d9ee8e928a
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/irq.h>
57 #include <asm/amigahw.h>
58 #include <asm/amigaints.h>
59 #include <asm/setup.h>
60
61 #include "c2p.h"
62
63
64 #define DEBUG
65
66 #if !defined(CONFIG_FB_AMIGA_OCS) && !defined(CONFIG_FB_AMIGA_ECS) && !defined(CONFIG_FB_AMIGA_AGA)
67 #define CONFIG_FB_AMIGA_OCS /* define at least one fb driver, this will change later */
68 #endif
69
70 #if !defined(CONFIG_FB_AMIGA_OCS)
71 # define IS_OCS (0)
72 #elif defined(CONFIG_FB_AMIGA_ECS) || defined(CONFIG_FB_AMIGA_AGA)
73 # define IS_OCS (chipset == TAG_OCS)
74 #else
75 # define CONFIG_FB_AMIGA_OCS_ONLY
76 # define IS_OCS (1)
77 #endif
78
79 #if !defined(CONFIG_FB_AMIGA_ECS)
80 # define IS_ECS (0)
81 #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_AGA)
82 # define IS_ECS (chipset == TAG_ECS)
83 #else
84 # define CONFIG_FB_AMIGA_ECS_ONLY
85 # define IS_ECS (1)
86 #endif
87
88 #if !defined(CONFIG_FB_AMIGA_AGA)
89 # define IS_AGA (0)
90 #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_ECS)
91 # define IS_AGA (chipset == TAG_AGA)
92 #else
93 # define CONFIG_FB_AMIGA_AGA_ONLY
94 # define IS_AGA (1)
95 #endif
96
97 #ifdef DEBUG
98 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
99 #else
100 # define DPRINTK(fmt, args...)
101 #endif
102
103 /*******************************************************************************
104
105
106 Generic video timings
107 ---------------------
108
109 Timings used by the frame buffer interface:
110
111 +----------+---------------------------------------------+----------+-------+
112 | | ^ | | |
113 | | |upper_margin | | |
114 | | v | | |
115 +----------###############################################----------+-------+
116 | # ^ # | |
117 | # | # | |
118 | # | # | |
119 | # | # | |
120 | left # | # right | hsync |
121 | margin # | xres # margin | len |
122 |<-------->#<---------------+--------------------------->#<-------->|<----->|
123 | # | # | |
124 | # | # | |
125 | # | # | |
126 | # |yres # | |
127 | # | # | |
128 | # | # | |
129 | # | # | |
130 | # | # | |
131 | # | # | |
132 | # | # | |
133 | # | # | |
134 | # | # | |
135 | # v # | |
136 +----------###############################################----------+-------+
137 | | ^ | | |
138 | | |lower_margin | | |
139 | | v | | |
140 +----------+---------------------------------------------+----------+-------+
141 | | ^ | | |
142 | | |vsync_len | | |
143 | | v | | |
144 +----------+---------------------------------------------+----------+-------+
145
146
147 Amiga video timings
148 -------------------
149
150 The Amiga native chipsets uses another timing scheme:
151
152 - hsstrt: Start of horizontal synchronization pulse
153 - hsstop: End of horizontal synchronization pulse
154 - htotal: Last value on the line (i.e. line length = htotal + 1)
155 - vsstrt: Start of vertical synchronization pulse
156 - vsstop: End of vertical synchronization pulse
157 - vtotal: Last line value (i.e. number of lines = vtotal + 1)
158 - hcenter: Start of vertical retrace for interlace
159
160 You can specify the blanking timings independently. Currently I just set
161 them equal to the respective synchronization values:
162
163 - hbstrt: Start of horizontal blank
164 - hbstop: End of horizontal blank
165 - vbstrt: Start of vertical blank
166 - vbstop: End of vertical blank
167
168 Horizontal values are in color clock cycles (280 ns), vertical values are in
169 scanlines.
170
171 (0, 0) is somewhere in the upper-left corner :-)
172
173
174 Amiga visible window definitions
175 --------------------------------
176
177 Currently I only have values for AGA, SHRES (28 MHz dotclock). Feel free to
178 make corrections and/or additions.
179
180 Within the above synchronization specifications, the visible window is
181 defined by the following parameters (actual register resolutions may be
182 different; all horizontal values are normalized with respect to the pixel
183 clock):
184
185 - diwstrt_h: Horizontal start of the visible window
186 - diwstop_h: Horizontal stop + 1(*) of the visible window
187 - diwstrt_v: Vertical start of the visible window
188 - diwstop_v: Vertical stop of the visible window
189 - ddfstrt: Horizontal start of display DMA
190 - ddfstop: Horizontal stop of display DMA
191 - hscroll: Horizontal display output delay
192
193 Sprite positioning:
194
195 - sprstrt_h: Horizontal start - 4 of sprite
196 - sprstrt_v: Vertical start of sprite
197
198 (*) Even Commodore did it wrong in the AGA monitor drivers by not adding 1.
199
200 Horizontal values are in dotclock cycles (35 ns), vertical values are in
201 scanlines.
202
203 (0, 0) is somewhere in the upper-left corner :-)
204
205
206 Dependencies (AGA, SHRES (35 ns dotclock))
207 -------------------------------------------
208
209 Since there are much more parameters for the Amiga display than for the
210 frame buffer interface, there must be some dependencies among the Amiga
211 display parameters. Here's what I found out:
212
213 - ddfstrt and ddfstop are best aligned to 64 pixels.
214 - the chipset needs 64 + 4 horizontal pixels after the DMA start before
215 the first pixel is output, so diwstrt_h = ddfstrt + 64 + 4 if you want
216 to display the first pixel on the line too. Increase diwstrt_h for
217 virtual screen panning.
218 - the display DMA always fetches 64 pixels at a time (fmode = 3).
219 - ddfstop is ddfstrt+#pixels - 64.
220 - diwstop_h = diwstrt_h + xres + 1. Because of the additional 1 this can
221 be 1 more than htotal.
222 - hscroll simply adds a delay to the display output. Smooth horizontal
223 panning needs an extra 64 pixels on the left to prefetch the pixels that
224 `fall off' on the left.
225 - if ddfstrt < 192, the sprite DMA cycles are all stolen by the bitplane
226 DMA, so it's best to make the DMA start as late as possible.
227 - you really don't want to make ddfstrt < 128, since this will steal DMA
228 cycles from the other DMA channels (audio, floppy and Chip RAM refresh).
229 - I make diwstop_h and diwstop_v as large as possible.
230
231 General dependencies
232 --------------------
233
234 - all values are SHRES pixel (35ns)
235
236 table 1:fetchstart table 2:prefetch table 3:fetchsize
237 ------------------ ---------------- -----------------
238 Pixclock # SHRES|HIRES|LORES # SHRES|HIRES|LORES # SHRES|HIRES|LORES
239 -------------#------+-----+------#------+-----+------#------+-----+------
240 Bus width 1x # 16 | 32 | 64 # 16 | 32 | 64 # 64 | 64 | 64
241 Bus width 2x # 32 | 64 | 128 # 32 | 64 | 64 # 64 | 64 | 128
242 Bus width 4x # 64 | 128 | 256 # 64 | 64 | 64 # 64 | 128 | 256
243
244 - chipset needs 4 pixels before the first pixel is output
245 - ddfstrt must be aligned to fetchstart (table 1)
246 - chipset needs also prefetch (table 2) to get first pixel data, so
247 ddfstrt = ((diwstrt_h - 4) & -fetchstart) - prefetch
248 - for horizontal panning decrease diwstrt_h
249 - the length of a fetchline must be aligned to fetchsize (table 3)
250 - if fetchstart is smaller than fetchsize, then ddfstrt can a little bit
251 moved to optimize use of dma (useful for OCS/ECS overscan displays)
252 - ddfstop is ddfstrt + ddfsize - fetchsize
253 - If C= didn't change anything for AGA, then at following positions the
254 dma bus is already used:
255 ddfstrt < 48 -> memory refresh
256 < 96 -> disk dma
257 < 160 -> audio dma
258 < 192 -> sprite 0 dma
259 < 416 -> sprite dma (32 per sprite)
260 - in accordance with the hardware reference manual a hardware stop is at
261 192, but AGA (ECS?) can go below this.
262
263 DMA priorities
264 --------------
265
266 Since there are limits on the earliest start value for display DMA and the
267 display of sprites, I use the following policy on horizontal panning and
268 the hardware cursor:
269
270 - if you want to start display DMA too early, you lose the ability to
271 do smooth horizontal panning (xpanstep 1 -> 64).
272 - if you want to go even further, you lose the hardware cursor too.
273
274 IMHO a hardware cursor is more important for X than horizontal scrolling,
275 so that's my motivation.
276
277
278 Implementation
279 --------------
280
281 ami_decode_var() converts the frame buffer values to the Amiga values. It's
282 just a `straightforward' implementation of the above rules.
283
284
285 Standard VGA timings
286 --------------------
287
288 xres yres left right upper lower hsync vsync
289 ---- ---- ---- ----- ----- ----- ----- -----
290 80x25 720 400 27 45 35 12 108 2
291 80x30 720 480 27 45 30 9 108 2
292
293 These were taken from a XFree86 configuration file, recalculated for a 28 MHz
294 dotclock (Amigas don't have a 25 MHz dotclock) and converted to frame buffer
295 generic timings.
296
297 As a comparison, graphics/monitor.h suggests the following:
298
299 xres yres left right upper lower hsync vsync
300 ---- ---- ---- ----- ----- ----- ----- -----
301
302 VGA 640 480 52 112 24 19 112 - 2 +
303 VGA70 640 400 52 112 27 21 112 - 2 -
304
305
306 Sync polarities
307 ---------------
308
309 VSYNC HSYNC Vertical size Vertical total
310 ----- ----- ------------- --------------
311 + + Reserved Reserved
312 + - 400 414
313 - + 350 362
314 - - 480 496
315
316 Source: CL-GD542X Technical Reference Manual, Cirrus Logic, Oct 1992
317
318
319 Broadcast video timings
320 -----------------------
321
322 According to the CCIR and RETMA specifications, we have the following values:
323
324 CCIR -> PAL
325 -----------
326
327 - a scanline is 64 µs long, of which 52.48 µs are visible. This is about
328 736 visible 70 ns pixels per line.
329 - we have 625 scanlines, of which 575 are visible (interlaced); after
330 rounding this becomes 576.
331
332 RETMA -> NTSC
333 -------------
334
335 - a scanline is 63.5 µs long, of which 53.5 µs are visible. This is about
336 736 visible 70 ns pixels per line.
337 - we have 525 scanlines, of which 485 are visible (interlaced); after
338 rounding this becomes 484.
339
340 Thus if you want a PAL compatible display, you have to do the following:
341
342 - set the FB_SYNC_BROADCAST flag to indicate that standard broadcast
343 timings are to be used.
344 - make sure upper_margin + yres + lower_margin + vsync_len = 625 for an
345 interlaced, 312 for a non-interlaced and 156 for a doublescanned
346 display.
347 - make sure left_margin + xres + right_margin + hsync_len = 1816 for a
348 SHRES, 908 for a HIRES and 454 for a LORES display.
349 - the left visible part begins at 360 (SHRES; HIRES:180, LORES:90),
350 left_margin + 2 * hsync_len must be greater or equal.
351 - the upper visible part begins at 48 (interlaced; non-interlaced:24,
352 doublescanned:12), upper_margin + 2 * vsync_len must be greater or
353 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 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 };
776
777
778 /*
779 * Saved color entry 0 so we can restore it when unblanking
780 */
781
782 static u_char red0, green0, blue0;
783
784
785 #if defined(CONFIG_FB_AMIGA_ECS)
786 static u_short ecs_palette[32];
787 #endif
788
789
790 /*
791 * Latches for Display Changes during VBlank
792 */
793
794 static u_short do_vmode_full = 0; /* Change the Video Mode */
795 static u_short do_vmode_pan = 0; /* Update the Video Mode */
796 static short do_blank = 0; /* (Un)Blank the Screen (±1) */
797 static u_short do_cursor = 0; /* Move the Cursor */
798
799
800 /*
801 * Various Flags
802 */
803
804 static u_short is_blanked = 0; /* Screen is Blanked */
805 static u_short is_lace = 0; /* Screen is laced */
806
807 /*
808 * Predefined Video Modes
809 *
810 */
811
812 static struct fb_videomode ami_modedb[] __initdata = {
813
814 /*
815 * AmigaOS Video Modes
816 *
817 * If you change these, make sure to update DEFMODE_* as well!
818 */
819
820 {
821 /* 640x200, 15 kHz, 60 Hz (NTSC) */
822 "ntsc", 60, 640, 200, TAG_HIRES, 106, 86, 44, 16, 76, 2,
823 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
824 }, {
825 /* 640x400, 15 kHz, 60 Hz interlaced (NTSC) */
826 "ntsc-lace", 60, 640, 400, TAG_HIRES, 106, 86, 88, 33, 76, 4,
827 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
828 }, {
829 /* 640x256, 15 kHz, 50 Hz (PAL) */
830 "pal", 50, 640, 256, TAG_HIRES, 106, 86, 40, 14, 76, 2,
831 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
832 }, {
833 /* 640x512, 15 kHz, 50 Hz interlaced (PAL) */
834 "pal-lace", 50, 640, 512, TAG_HIRES, 106, 86, 80, 29, 76, 4,
835 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
836 }, {
837 /* 640x480, 29 kHz, 57 Hz */
838 "multiscan", 57, 640, 480, TAG_SHRES, 96, 112, 29, 8, 72, 8,
839 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
840 }, {
841 /* 640x960, 29 kHz, 57 Hz interlaced */
842 "multiscan-lace", 57, 640, 960, TAG_SHRES, 96, 112, 58, 16, 72,
843 16,
844 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
845 }, {
846 /* 640x200, 15 kHz, 72 Hz */
847 "euro36", 72, 640, 200, TAG_HIRES, 92, 124, 6, 6, 52, 5,
848 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
849 }, {
850 /* 640x400, 15 kHz, 72 Hz interlaced */
851 "euro36-lace", 72, 640, 400, TAG_HIRES, 92, 124, 12, 12, 52,
852 10,
853 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
854 }, {
855 /* 640x400, 29 kHz, 68 Hz */
856 "euro72", 68, 640, 400, TAG_SHRES, 164, 92, 9, 9, 80, 8,
857 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
858 }, {
859 /* 640x800, 29 kHz, 68 Hz interlaced */
860 "euro72-lace", 68, 640, 800, TAG_SHRES, 164, 92, 18, 18, 80,
861 16,
862 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
863 }, {
864 /* 800x300, 23 kHz, 70 Hz */
865 "super72", 70, 800, 300, TAG_SHRES, 212, 140, 10, 11, 80, 7,
866 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
867 }, {
868 /* 800x600, 23 kHz, 70 Hz interlaced */
869 "super72-lace", 70, 800, 600, TAG_SHRES, 212, 140, 20, 22, 80,
870 14,
871 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
872 }, {
873 /* 640x200, 27 kHz, 57 Hz doublescan */
874 "dblntsc", 57, 640, 200, TAG_SHRES, 196, 124, 18, 17, 80, 4,
875 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
876 }, {
877 /* 640x400, 27 kHz, 57 Hz */
878 "dblntsc-ff", 57, 640, 400, TAG_SHRES, 196, 124, 36, 35, 80, 7,
879 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
880 }, {
881 /* 640x800, 27 kHz, 57 Hz interlaced */
882 "dblntsc-lace", 57, 640, 800, TAG_SHRES, 196, 124, 72, 70, 80,
883 14,
884 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
885 }, {
886 /* 640x256, 27 kHz, 47 Hz doublescan */
887 "dblpal", 47, 640, 256, TAG_SHRES, 196, 124, 14, 13, 80, 4,
888 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
889 }, {
890 /* 640x512, 27 kHz, 47 Hz */
891 "dblpal-ff", 47, 640, 512, TAG_SHRES, 196, 124, 28, 27, 80, 7,
892 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
893 }, {
894 /* 640x1024, 27 kHz, 47 Hz interlaced */
895 "dblpal-lace", 47, 640, 1024, TAG_SHRES, 196, 124, 56, 54, 80,
896 14,
897 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
898 },
899
900 /*
901 * VGA Video Modes
902 */
903
904 {
905 /* 640x480, 31 kHz, 60 Hz (VGA) */
906 "vga", 60, 640, 480, TAG_SHRES, 64, 96, 30, 9, 112, 2,
907 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
908 }, {
909 /* 640x400, 31 kHz, 70 Hz (VGA) */
910 "vga70", 70, 640, 400, TAG_SHRES, 64, 96, 35, 12, 112, 2,
911 FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT,
912 FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
913 },
914
915 #if 0
916
917 /*
918 * A2024 video modes
919 * These modes don't work yet because there's no A2024 driver.
920 */
921
922 {
923 /* 1024x800, 10 Hz */
924 "a2024-10", 10, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
925 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
926 }, {
927 /* 1024x800, 15 Hz */
928 "a2024-15", 15, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
929 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
930 }
931 #endif
932 };
933
934 #define NUM_TOTAL_MODES ARRAY_SIZE(ami_modedb)
935
936 static char *mode_option __initdata = NULL;
937 static int round_down_bpp = 1; /* for mode probing */
938
939 /*
940 * Some default modes
941 */
942
943
944 #define DEFMODE_PAL 2 /* "pal" for PAL OCS/ECS */
945 #define DEFMODE_NTSC 0 /* "ntsc" for NTSC OCS/ECS */
946 #define DEFMODE_AMBER_PAL 3 /* "pal-lace" for flicker fixed PAL (A3000) */
947 #define DEFMODE_AMBER_NTSC 1 /* "ntsc-lace" for flicker fixed NTSC (A3000) */
948 #define DEFMODE_AGA 19 /* "vga70" for AGA */
949
950
951 static int amifb_ilbm = 0; /* interleaved or normal bitplanes */
952
953 static u32 amifb_hfmin __initdata; /* monitor hfreq lower limit (Hz) */
954 static u32 amifb_hfmax __initdata; /* monitor hfreq upper limit (Hz) */
955 static u16 amifb_vfmin __initdata; /* monitor vfreq lower limit (Hz) */
956 static u16 amifb_vfmax __initdata; /* monitor vfreq upper limit (Hz) */
957
958
959 /*
960 * Macros for the conversion from real world values to hardware register
961 * values
962 *
963 * This helps us to keep our attention on the real stuff...
964 *
965 * Hardware limits for AGA:
966 *
967 * parameter min max step
968 * --------- --- ---- ----
969 * diwstrt_h 0 2047 1
970 * diwstrt_v 0 2047 1
971 * diwstop_h 0 4095 1
972 * diwstop_v 0 4095 1
973 *
974 * ddfstrt 0 2032 16
975 * ddfstop 0 2032 16
976 *
977 * htotal 8 2048 8
978 * hsstrt 0 2040 8
979 * hsstop 0 2040 8
980 * vtotal 1 4096 1
981 * vsstrt 0 4095 1
982 * vsstop 0 4095 1
983 * hcenter 0 2040 8
984 *
985 * hbstrt 0 2047 1
986 * hbstop 0 2047 1
987 * vbstrt 0 4095 1
988 * vbstop 0 4095 1
989 *
990 * Horizontal values are in 35 ns (SHRES) pixels
991 * Vertical values are in half scanlines
992 */
993
994 /* bplcon1 (smooth scrolling) */
995
996 #define hscroll2hw(hscroll) \
997 (((hscroll) << 12 & 0x3000) | ((hscroll) << 8 & 0xc300) | \
998 ((hscroll) << 4 & 0x0c00) | ((hscroll) << 2 & 0x00f0) | \
999 ((hscroll)>>2 & 0x000f))
1000
1001 /* diwstrt/diwstop/diwhigh (visible display window) */
1002
1003 #define diwstrt2hw(diwstrt_h, diwstrt_v) \
1004 (((diwstrt_v) << 7 & 0xff00) | ((diwstrt_h)>>2 & 0x00ff))
1005 #define diwstop2hw(diwstop_h, diwstop_v) \
1006 (((diwstop_v) << 7 & 0xff00) | ((diwstop_h)>>2 & 0x00ff))
1007 #define diwhigh2hw(diwstrt_h, diwstrt_v, diwstop_h, diwstop_v) \
1008 (((diwstop_h) << 3 & 0x2000) | ((diwstop_h) << 11 & 0x1800) | \
1009 ((diwstop_v)>>1 & 0x0700) | ((diwstrt_h)>>5 & 0x0020) | \
1010 ((diwstrt_h) << 3 & 0x0018) | ((diwstrt_v)>>9 & 0x0007))
1011
1012 /* ddfstrt/ddfstop (display DMA) */
1013
1014 #define ddfstrt2hw(ddfstrt) div8(ddfstrt)
1015 #define ddfstop2hw(ddfstop) div8(ddfstop)
1016
1017 /* hsstrt/hsstop/htotal/vsstrt/vsstop/vtotal/hcenter (sync timings) */
1018
1019 #define hsstrt2hw(hsstrt) (div8(hsstrt))
1020 #define hsstop2hw(hsstop) (div8(hsstop))
1021 #define htotal2hw(htotal) (div8(htotal) - 1)
1022 #define vsstrt2hw(vsstrt) (div2(vsstrt))
1023 #define vsstop2hw(vsstop) (div2(vsstop))
1024 #define vtotal2hw(vtotal) (div2(vtotal) - 1)
1025 #define hcenter2hw(htotal) (div8(htotal))
1026
1027 /* hbstrt/hbstop/vbstrt/vbstop (blanking timings) */
1028
1029 #define hbstrt2hw(hbstrt) (((hbstrt) << 8 & 0x0700) | ((hbstrt)>>3 & 0x00ff))
1030 #define hbstop2hw(hbstop) (((hbstop) << 8 & 0x0700) | ((hbstop)>>3 & 0x00ff))
1031 #define vbstrt2hw(vbstrt) (div2(vbstrt))
1032 #define vbstop2hw(vbstop) (div2(vbstop))
1033
1034 /* colour */
1035
1036 #define rgb2hw8_high(red, green, blue) \
1037 (((red & 0xf0) << 4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1038 #define rgb2hw8_low(red, green, blue) \
1039 (((red & 0x0f) << 8) | ((green & 0x0f) << 4) | (blue & 0x0f))
1040 #define rgb2hw4(red, green, blue) \
1041 (((red & 0xf0) << 4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1042 #define rgb2hw2(red, green, blue) \
1043 (((red & 0xc0) << 4) | (green & 0xc0) | ((blue & 0xc0)>>4))
1044
1045 /* sprpos/sprctl (sprite positioning) */
1046
1047 #define spr2hw_pos(start_v, start_h) \
1048 (((start_v) << 7 & 0xff00) | ((start_h)>>3 & 0x00ff))
1049 #define spr2hw_ctl(start_v, start_h, stop_v) \
1050 (((stop_v) << 7 & 0xff00) | ((start_v)>>4 & 0x0040) | \
1051 ((stop_v)>>5 & 0x0020) | ((start_h) << 3 & 0x0018) | \
1052 ((start_v)>>7 & 0x0004) | ((stop_v)>>8 & 0x0002) | \
1053 ((start_h)>>2 & 0x0001))
1054
1055 /* get current vertical position of beam */
1056 #define get_vbpos() ((u_short)((*(u_long volatile *)&custom.vposr >> 7) & 0xffe))
1057
1058 /*
1059 * Copper Initialisation List
1060 */
1061
1062 #define COPINITSIZE (sizeof(copins) * 40)
1063
1064 enum {
1065 cip_bplcon0
1066 };
1067
1068 /*
1069 * Long Frame/Short Frame Copper List
1070 * Don't change the order, build_copper()/rebuild_copper() rely on this
1071 */
1072
1073 #define COPLISTSIZE (sizeof(copins) * 64)
1074
1075 enum {
1076 cop_wait, cop_bplcon0,
1077 cop_spr0ptrh, cop_spr0ptrl,
1078 cop_diwstrt, cop_diwstop,
1079 cop_diwhigh,
1080 };
1081
1082 /*
1083 * Pixel modes for Bitplanes and Sprites
1084 */
1085
1086 static u_short bplpixmode[3] = {
1087 BPC0_SHRES, /* 35 ns */
1088 BPC0_HIRES, /* 70 ns */
1089 0 /* 140 ns */
1090 };
1091
1092 static u_short sprpixmode[3] = {
1093 BPC3_SPRES1 | BPC3_SPRES0, /* 35 ns */
1094 BPC3_SPRES1, /* 70 ns */
1095 BPC3_SPRES0 /* 140 ns */
1096 };
1097
1098 /*
1099 * Fetch modes for Bitplanes and Sprites
1100 */
1101
1102 static u_short bplfetchmode[3] = {
1103 0, /* 1x */
1104 FMODE_BPL32, /* 2x */
1105 FMODE_BPAGEM | FMODE_BPL32 /* 4x */
1106 };
1107
1108 static u_short sprfetchmode[3] = {
1109 0, /* 1x */
1110 FMODE_SPR32, /* 2x */
1111 FMODE_SPAGEM | FMODE_SPR32 /* 4x */
1112 };
1113
1114
1115 /* --------------------------- Hardware routines --------------------------- */
1116
1117 /*
1118 * Get the video params out of `var'. If a value doesn't fit, round
1119 * it up, if it's too big, return -EINVAL.
1120 */
1121
1122 static int ami_decode_var(struct fb_var_screeninfo *var, struct amifb_par *par,
1123 const struct fb_info *info)
1124 {
1125 u_short clk_shift, line_shift;
1126 u_long maxfetchstop, fstrt, fsize, fconst, xres_n, yres_n;
1127 u_int htotal, vtotal;
1128
1129 /*
1130 * Find a matching Pixel Clock
1131 */
1132
1133 for (clk_shift = TAG_SHRES; clk_shift <= TAG_LORES; clk_shift++)
1134 if (var->pixclock <= pixclock[clk_shift])
1135 break;
1136 if (clk_shift > TAG_LORES) {
1137 DPRINTK("pixclock too high\n");
1138 return -EINVAL;
1139 }
1140 par->clk_shift = clk_shift;
1141
1142 /*
1143 * Check the Geometry Values
1144 */
1145
1146 if ((par->xres = var->xres) < 64)
1147 par->xres = 64;
1148 if ((par->yres = var->yres) < 64)
1149 par->yres = 64;
1150 if ((par->vxres = var->xres_virtual) < par->xres)
1151 par->vxres = par->xres;
1152 if ((par->vyres = var->yres_virtual) < par->yres)
1153 par->vyres = par->yres;
1154
1155 par->bpp = var->bits_per_pixel;
1156 if (!var->nonstd) {
1157 if (par->bpp < 1)
1158 par->bpp = 1;
1159 if (par->bpp > maxdepth[clk_shift]) {
1160 if (round_down_bpp && maxdepth[clk_shift])
1161 par->bpp = maxdepth[clk_shift];
1162 else {
1163 DPRINTK("invalid bpp\n");
1164 return -EINVAL;
1165 }
1166 }
1167 } else if (var->nonstd == FB_NONSTD_HAM) {
1168 if (par->bpp < 6)
1169 par->bpp = 6;
1170 if (par->bpp != 6) {
1171 if (par->bpp < 8)
1172 par->bpp = 8;
1173 if (par->bpp != 8 || !IS_AGA) {
1174 DPRINTK("invalid bpp for ham mode\n");
1175 return -EINVAL;
1176 }
1177 }
1178 } else {
1179 DPRINTK("unknown nonstd mode\n");
1180 return -EINVAL;
1181 }
1182
1183 /*
1184 * FB_VMODE_SMOOTH_XPAN will be cleared, if one of the following
1185 * checks failed and smooth scrolling is not possible
1186 */
1187
1188 par->vmode = var->vmode | FB_VMODE_SMOOTH_XPAN;
1189 switch (par->vmode & FB_VMODE_MASK) {
1190 case FB_VMODE_INTERLACED:
1191 line_shift = 0;
1192 break;
1193 case FB_VMODE_NONINTERLACED:
1194 line_shift = 1;
1195 break;
1196 case FB_VMODE_DOUBLE:
1197 if (!IS_AGA) {
1198 DPRINTK("double mode only possible with aga\n");
1199 return -EINVAL;
1200 }
1201 line_shift = 2;
1202 break;
1203 default:
1204 DPRINTK("unknown video mode\n");
1205 return -EINVAL;
1206 break;
1207 }
1208 par->line_shift = line_shift;
1209
1210 /*
1211 * Vertical and Horizontal Timings
1212 */
1213
1214 xres_n = par->xres << clk_shift;
1215 yres_n = par->yres << line_shift;
1216 par->htotal = down8((var->left_margin + par->xres + var->right_margin +
1217 var->hsync_len) << clk_shift);
1218 par->vtotal =
1219 down2(((var->upper_margin + par->yres + var->lower_margin +
1220 var->vsync_len) << line_shift) + 1);
1221
1222 if (IS_AGA)
1223 par->bplcon3 = sprpixmode[clk_shift];
1224 else
1225 par->bplcon3 = 0;
1226 if (var->sync & FB_SYNC_BROADCAST) {
1227 par->diwstop_h = par->htotal -
1228 ((var->right_margin - var->hsync_len) << clk_shift);
1229 if (IS_AGA)
1230 par->diwstop_h += mod4(var->hsync_len);
1231 else
1232 par->diwstop_h = down4(par->diwstop_h);
1233
1234 par->diwstrt_h = par->diwstop_h - xres_n;
1235 par->diwstop_v = par->vtotal -
1236 ((var->lower_margin - var->vsync_len) << line_shift);
1237 par->diwstrt_v = par->diwstop_v - yres_n;
1238 if (par->diwstop_h >= par->htotal + 8) {
1239 DPRINTK("invalid diwstop_h\n");
1240 return -EINVAL;
1241 }
1242 if (par->diwstop_v > par->vtotal) {
1243 DPRINTK("invalid diwstop_v\n");
1244 return -EINVAL;
1245 }
1246
1247 if (!IS_OCS) {
1248 /* Initialize sync with some reasonable values for pwrsave */
1249 par->hsstrt = 160;
1250 par->hsstop = 320;
1251 par->vsstrt = 30;
1252 par->vsstop = 34;
1253 } else {
1254 par->hsstrt = 0;
1255 par->hsstop = 0;
1256 par->vsstrt = 0;
1257 par->vsstop = 0;
1258 }
1259 if (par->vtotal > (PAL_VTOTAL + NTSC_VTOTAL) / 2) {
1260 /* PAL video mode */
1261 if (par->htotal != PAL_HTOTAL) {
1262 DPRINTK("htotal invalid for pal\n");
1263 return -EINVAL;
1264 }
1265 if (par->diwstrt_h < PAL_DIWSTRT_H) {
1266 DPRINTK("diwstrt_h too low for pal\n");
1267 return -EINVAL;
1268 }
1269 if (par->diwstrt_v < PAL_DIWSTRT_V) {
1270 DPRINTK("diwstrt_v too low for pal\n");
1271 return -EINVAL;
1272 }
1273 htotal = PAL_HTOTAL>>clk_shift;
1274 vtotal = PAL_VTOTAL>>1;
1275 if (!IS_OCS) {
1276 par->beamcon0 = BMC0_PAL;
1277 par->bplcon3 |= BPC3_BRDRBLNK;
1278 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
1279 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
1280 par->beamcon0 = BMC0_PAL;
1281 par->hsstop = 1;
1282 } else if (amiga_vblank != 50) {
1283 DPRINTK("pal not supported by this chipset\n");
1284 return -EINVAL;
1285 }
1286 } else {
1287 /* NTSC video mode
1288 * In the AGA chipset seems to be hardware bug with BPC3_BRDRBLNK
1289 * and NTSC activated, so than better let diwstop_h <= 1812
1290 */
1291 if (par->htotal != NTSC_HTOTAL) {
1292 DPRINTK("htotal invalid for ntsc\n");
1293 return -EINVAL;
1294 }
1295 if (par->diwstrt_h < NTSC_DIWSTRT_H) {
1296 DPRINTK("diwstrt_h too low for ntsc\n");
1297 return -EINVAL;
1298 }
1299 if (par->diwstrt_v < NTSC_DIWSTRT_V) {
1300 DPRINTK("diwstrt_v too low for ntsc\n");
1301 return -EINVAL;
1302 }
1303 htotal = NTSC_HTOTAL>>clk_shift;
1304 vtotal = NTSC_VTOTAL>>1;
1305 if (!IS_OCS) {
1306 par->beamcon0 = 0;
1307 par->bplcon3 |= BPC3_BRDRBLNK;
1308 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
1309 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
1310 par->beamcon0 = 0;
1311 par->hsstop = 1;
1312 } else if (amiga_vblank != 60) {
1313 DPRINTK("ntsc not supported by this chipset\n");
1314 return -EINVAL;
1315 }
1316 }
1317 if (IS_OCS) {
1318 if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
1319 par->diwstrt_v >= 512 || par->diwstop_v < 256) {
1320 DPRINTK("invalid position for display on ocs\n");
1321 return -EINVAL;
1322 }
1323 }
1324 } else if (!IS_OCS) {
1325 /* Programmable video mode */
1326 par->hsstrt = var->right_margin << clk_shift;
1327 par->hsstop = (var->right_margin + var->hsync_len) << clk_shift;
1328 par->diwstop_h = par->htotal - mod8(par->hsstrt) + 8 - (1 << clk_shift);
1329 if (!IS_AGA)
1330 par->diwstop_h = down4(par->diwstop_h) - 16;
1331 par->diwstrt_h = par->diwstop_h - xres_n;
1332 par->hbstop = par->diwstrt_h + 4;
1333 par->hbstrt = par->diwstop_h + 4;
1334 if (par->hbstrt >= par->htotal + 8)
1335 par->hbstrt -= par->htotal;
1336 par->hcenter = par->hsstrt + (par->htotal >> 1);
1337 par->vsstrt = var->lower_margin << line_shift;
1338 par->vsstop = (var->lower_margin + var->vsync_len) << line_shift;
1339 par->diwstop_v = par->vtotal;
1340 if ((par->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
1341 par->diwstop_v -= 2;
1342 par->diwstrt_v = par->diwstop_v - yres_n;
1343 par->vbstop = par->diwstrt_v - 2;
1344 par->vbstrt = par->diwstop_v - 2;
1345 if (par->vtotal > 2048) {
1346 DPRINTK("vtotal too high\n");
1347 return -EINVAL;
1348 }
1349 if (par->htotal > 2048) {
1350 DPRINTK("htotal too high\n");
1351 return -EINVAL;
1352 }
1353 par->bplcon3 |= BPC3_EXTBLKEN;
1354 par->beamcon0 = BMC0_HARDDIS | BMC0_VARVBEN | BMC0_LOLDIS |
1355 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARBEAMEN |
1356 BMC0_PAL | BMC0_VARCSYEN;
1357 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
1358 par->beamcon0 |= BMC0_HSYTRUE;
1359 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
1360 par->beamcon0 |= BMC0_VSYTRUE;
1361 if (var->sync & FB_SYNC_COMP_HIGH_ACT)
1362 par->beamcon0 |= BMC0_CSYTRUE;
1363 htotal = par->htotal>>clk_shift;
1364 vtotal = par->vtotal>>1;
1365 } else {
1366 DPRINTK("only broadcast modes possible for ocs\n");
1367 return -EINVAL;
1368 }
1369
1370 /*
1371 * Checking the DMA timing
1372 */
1373
1374 fconst = 16 << maxfmode << clk_shift;
1375
1376 /*
1377 * smallest window start value without turn off other dma cycles
1378 * than sprite1-7, unless you change min_fstrt
1379 */
1380
1381
1382 fsize = ((maxfmode + clk_shift <= 1) ? fconst : 64);
1383 fstrt = downx(fconst, par->diwstrt_h - 4) - fsize;
1384 if (fstrt < min_fstrt) {
1385 DPRINTK("fetch start too low\n");
1386 return -EINVAL;
1387 }
1388
1389 /*
1390 * smallest window start value where smooth scrolling is possible
1391 */
1392
1393 fstrt = downx(fconst, par->diwstrt_h - fconst + (1 << clk_shift) - 4) -
1394 fsize;
1395 if (fstrt < min_fstrt)
1396 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
1397
1398 maxfetchstop = down16(par->htotal - 80);
1399
1400 fstrt = downx(fconst, par->diwstrt_h - 4) - 64 - fconst;
1401 fsize = upx(fconst, xres_n +
1402 modx(fconst, downx(1 << clk_shift, par->diwstrt_h - 4)));
1403 if (fstrt + fsize > maxfetchstop)
1404 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
1405
1406 fsize = upx(fconst, xres_n);
1407 if (fstrt + fsize > maxfetchstop) {
1408 DPRINTK("fetch stop too high\n");
1409 return -EINVAL;
1410 }
1411
1412 if (maxfmode + clk_shift <= 1) {
1413 fsize = up64(xres_n + fconst - 1);
1414 if (min_fstrt + fsize - 64 > maxfetchstop)
1415 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
1416
1417 fsize = up64(xres_n);
1418 if (min_fstrt + fsize - 64 > maxfetchstop) {
1419 DPRINTK("fetch size too high\n");
1420 return -EINVAL;
1421 }
1422
1423 fsize -= 64;
1424 } else
1425 fsize -= fconst;
1426
1427 /*
1428 * Check if there is enough time to update the bitplane pointers for ywrap
1429 */
1430
1431 if (par->htotal - fsize - 64 < par->bpp * 64)
1432 par->vmode &= ~FB_VMODE_YWRAP;
1433
1434 /*
1435 * Bitplane calculations and check the Memory Requirements
1436 */
1437
1438 if (amifb_ilbm) {
1439 par->next_plane = div8(upx(16 << maxfmode, par->vxres));
1440 par->next_line = par->bpp * par->next_plane;
1441 if (par->next_line * par->vyres > info->fix.smem_len) {
1442 DPRINTK("too few video mem\n");
1443 return -EINVAL;
1444 }
1445 } else {
1446 par->next_line = div8(upx(16 << maxfmode, par->vxres));
1447 par->next_plane = par->vyres * par->next_line;
1448 if (par->next_plane * par->bpp > info->fix.smem_len) {
1449 DPRINTK("too few video mem\n");
1450 return -EINVAL;
1451 }
1452 }
1453
1454 /*
1455 * Hardware Register Values
1456 */
1457
1458 par->bplcon0 = BPC0_COLOR | bplpixmode[clk_shift];
1459 if (!IS_OCS)
1460 par->bplcon0 |= BPC0_ECSENA;
1461 if (par->bpp == 8)
1462 par->bplcon0 |= BPC0_BPU3;
1463 else
1464 par->bplcon0 |= par->bpp << 12;
1465 if (var->nonstd == FB_NONSTD_HAM)
1466 par->bplcon0 |= BPC0_HAM;
1467 if (var->sync & FB_SYNC_EXT)
1468 par->bplcon0 |= BPC0_ERSY;
1469
1470 if (IS_AGA)
1471 par->fmode = bplfetchmode[maxfmode];
1472
1473 switch (par->vmode & FB_VMODE_MASK) {
1474 case FB_VMODE_INTERLACED:
1475 par->bplcon0 |= BPC0_LACE;
1476 break;
1477 case FB_VMODE_DOUBLE:
1478 if (IS_AGA)
1479 par->fmode |= FMODE_SSCAN2 | FMODE_BSCAN2;
1480 break;
1481 }
1482
1483 if (!((par->vmode ^ var->vmode) & FB_VMODE_YWRAP)) {
1484 par->xoffset = var->xoffset;
1485 par->yoffset = var->yoffset;
1486 if (par->vmode & FB_VMODE_YWRAP) {
1487 if (par->xoffset || par->yoffset < 0 ||
1488 par->yoffset >= par->vyres)
1489 par->xoffset = par->yoffset = 0;
1490 } else {
1491 if (par->xoffset < 0 ||
1492 par->xoffset > upx(16 << maxfmode, par->vxres - par->xres) ||
1493 par->yoffset < 0 || par->yoffset > par->vyres - par->yres)
1494 par->xoffset = par->yoffset = 0;
1495 }
1496 } else
1497 par->xoffset = par->yoffset = 0;
1498
1499 par->crsr.crsr_x = par->crsr.crsr_y = 0;
1500 par->crsr.spot_x = par->crsr.spot_y = 0;
1501 par->crsr.height = par->crsr.width = 0;
1502
1503 return 0;
1504 }
1505
1506 /*
1507 * Fill the `var' structure based on the values in `par' and maybe
1508 * other values read out of the hardware.
1509 */
1510
1511 static void ami_encode_var(struct fb_var_screeninfo *var,
1512 struct amifb_par *par)
1513 {
1514 u_short clk_shift, line_shift;
1515
1516 memset(var, 0, sizeof(struct fb_var_screeninfo));
1517
1518 clk_shift = par->clk_shift;
1519 line_shift = par->line_shift;
1520
1521 var->xres = par->xres;
1522 var->yres = par->yres;
1523 var->xres_virtual = par->vxres;
1524 var->yres_virtual = par->vyres;
1525 var->xoffset = par->xoffset;
1526 var->yoffset = par->yoffset;
1527
1528 var->bits_per_pixel = par->bpp;
1529 var->grayscale = 0;
1530
1531 var->red.offset = 0;
1532 var->red.msb_right = 0;
1533 var->red.length = par->bpp;
1534 if (par->bplcon0 & BPC0_HAM)
1535 var->red.length -= 2;
1536 var->blue = var->green = var->red;
1537 var->transp.offset = 0;
1538 var->transp.length = 0;
1539 var->transp.msb_right = 0;
1540
1541 if (par->bplcon0 & BPC0_HAM)
1542 var->nonstd = FB_NONSTD_HAM;
1543 else
1544 var->nonstd = 0;
1545 var->activate = 0;
1546
1547 var->height = -1;
1548 var->width = -1;
1549
1550 var->pixclock = pixclock[clk_shift];
1551
1552 if (IS_AGA && par->fmode & FMODE_BSCAN2)
1553 var->vmode = FB_VMODE_DOUBLE;
1554 else if (par->bplcon0 & BPC0_LACE)
1555 var->vmode = FB_VMODE_INTERLACED;
1556 else
1557 var->vmode = FB_VMODE_NONINTERLACED;
1558
1559 if (!IS_OCS && par->beamcon0 & BMC0_VARBEAMEN) {
1560 var->hsync_len = (par->hsstop - par->hsstrt)>>clk_shift;
1561 var->right_margin = par->hsstrt>>clk_shift;
1562 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
1563 var->vsync_len = (par->vsstop - par->vsstrt)>>line_shift;
1564 var->lower_margin = par->vsstrt>>line_shift;
1565 var->upper_margin = (par->vtotal>>line_shift) - var->yres - var->lower_margin - var->vsync_len;
1566 var->sync = 0;
1567 if (par->beamcon0 & BMC0_HSYTRUE)
1568 var->sync |= FB_SYNC_HOR_HIGH_ACT;
1569 if (par->beamcon0 & BMC0_VSYTRUE)
1570 var->sync |= FB_SYNC_VERT_HIGH_ACT;
1571 if (par->beamcon0 & BMC0_CSYTRUE)
1572 var->sync |= FB_SYNC_COMP_HIGH_ACT;
1573 } else {
1574 var->sync = FB_SYNC_BROADCAST;
1575 var->hsync_len = (152>>clk_shift) + mod4(par->diwstop_h);
1576 var->right_margin = ((par->htotal - down4(par->diwstop_h))>>clk_shift) + var->hsync_len;
1577 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
1578 var->vsync_len = 4>>line_shift;
1579 var->lower_margin = ((par->vtotal - par->diwstop_v)>>line_shift) + var->vsync_len;
1580 var->upper_margin = (((par->vtotal - 2)>>line_shift) + 1) - var->yres -
1581 var->lower_margin - var->vsync_len;
1582 }
1583
1584 if (par->bplcon0 & BPC0_ERSY)
1585 var->sync |= FB_SYNC_EXT;
1586 if (par->vmode & FB_VMODE_YWRAP)
1587 var->vmode |= FB_VMODE_YWRAP;
1588 }
1589
1590
1591 /*
1592 * Update hardware
1593 */
1594
1595 static void ami_update_par(struct fb_info *info)
1596 {
1597 struct amifb_par *par = info->par;
1598 short clk_shift, vshift, fstrt, fsize, fstop, fconst, shift, move, mod;
1599
1600 clk_shift = par->clk_shift;
1601
1602 if (!(par->vmode & FB_VMODE_SMOOTH_XPAN))
1603 par->xoffset = upx(16 << maxfmode, par->xoffset);
1604
1605 fconst = 16 << maxfmode << clk_shift;
1606 vshift = modx(16 << maxfmode, par->xoffset);
1607 fstrt = par->diwstrt_h - (vshift << clk_shift) - 4;
1608 fsize = (par->xres + vshift) << clk_shift;
1609 shift = modx(fconst, fstrt);
1610 move = downx(2 << maxfmode, div8(par->xoffset));
1611 if (maxfmode + clk_shift > 1) {
1612 fstrt = downx(fconst, fstrt) - 64;
1613 fsize = upx(fconst, fsize);
1614 fstop = fstrt + fsize - fconst;
1615 } else {
1616 mod = fstrt = downx(fconst, fstrt) - fconst;
1617 fstop = fstrt + upx(fconst, fsize) - 64;
1618 fsize = up64(fsize);
1619 fstrt = fstop - fsize + 64;
1620 if (fstrt < min_fstrt) {
1621 fstop += min_fstrt - fstrt;
1622 fstrt = min_fstrt;
1623 }
1624 move = move - div8((mod - fstrt)>>clk_shift);
1625 }
1626 mod = par->next_line - div8(fsize>>clk_shift);
1627 par->ddfstrt = fstrt;
1628 par->ddfstop = fstop;
1629 par->bplcon1 = hscroll2hw(shift);
1630 par->bpl2mod = mod;
1631 if (par->bplcon0 & BPC0_LACE)
1632 par->bpl2mod += par->next_line;
1633 if (IS_AGA && (par->fmode & FMODE_BSCAN2))
1634 par->bpl1mod = -div8(fsize>>clk_shift);
1635 else
1636 par->bpl1mod = par->bpl2mod;
1637
1638 if (par->yoffset) {
1639 par->bplpt0 = info->fix.smem_start +
1640 par->next_line * par->yoffset + move;
1641 if (par->vmode & FB_VMODE_YWRAP) {
1642 if (par->yoffset > par->vyres - par->yres) {
1643 par->bplpt0wrap = info->fix.smem_start + move;
1644 if (par->bplcon0 & BPC0_LACE &&
1645 mod2(par->diwstrt_v + par->vyres -
1646 par->yoffset))
1647 par->bplpt0wrap += par->next_line;
1648 }
1649 }
1650 } else
1651 par->bplpt0 = info->fix.smem_start + move;
1652
1653 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v))
1654 par->bplpt0 += par->next_line;
1655 }
1656
1657
1658 /*
1659 * Pan or Wrap the Display
1660 *
1661 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1662 * in `var'.
1663 */
1664
1665 static void ami_pan_var(struct fb_var_screeninfo *var, struct fb_info *info)
1666 {
1667 struct amifb_par *par = info->par;
1668
1669 par->xoffset = var->xoffset;
1670 par->yoffset = var->yoffset;
1671 if (var->vmode & FB_VMODE_YWRAP)
1672 par->vmode |= FB_VMODE_YWRAP;
1673 else
1674 par->vmode &= ~FB_VMODE_YWRAP;
1675
1676 do_vmode_pan = 0;
1677 ami_update_par(info);
1678 do_vmode_pan = 1;
1679 }
1680
1681
1682 static void ami_update_display(const struct amifb_par *par)
1683 {
1684 custom.bplcon1 = par->bplcon1;
1685 custom.bpl1mod = par->bpl1mod;
1686 custom.bpl2mod = par->bpl2mod;
1687 custom.ddfstrt = ddfstrt2hw(par->ddfstrt);
1688 custom.ddfstop = ddfstop2hw(par->ddfstop);
1689 }
1690
1691 /*
1692 * Change the video mode (called by VBlank interrupt)
1693 */
1694
1695 static void ami_init_display(const struct amifb_par *par)
1696 {
1697 int i;
1698
1699 custom.bplcon0 = par->bplcon0 & ~BPC0_LACE;
1700 custom.bplcon2 = (IS_OCS ? 0 : BPC2_KILLEHB) | BPC2_PF2P2 | BPC2_PF1P2;
1701 if (!IS_OCS) {
1702 custom.bplcon3 = par->bplcon3;
1703 if (IS_AGA)
1704 custom.bplcon4 = BPC4_ESPRM4 | BPC4_OSPRM4;
1705 if (par->beamcon0 & BMC0_VARBEAMEN) {
1706 custom.htotal = htotal2hw(par->htotal);
1707 custom.hbstrt = hbstrt2hw(par->hbstrt);
1708 custom.hbstop = hbstop2hw(par->hbstop);
1709 custom.hsstrt = hsstrt2hw(par->hsstrt);
1710 custom.hsstop = hsstop2hw(par->hsstop);
1711 custom.hcenter = hcenter2hw(par->hcenter);
1712 custom.vtotal = vtotal2hw(par->vtotal);
1713 custom.vbstrt = vbstrt2hw(par->vbstrt);
1714 custom.vbstop = vbstop2hw(par->vbstop);
1715 custom.vsstrt = vsstrt2hw(par->vsstrt);
1716 custom.vsstop = vsstop2hw(par->vsstop);
1717 }
1718 }
1719 if (!IS_OCS || par->hsstop)
1720 custom.beamcon0 = par->beamcon0;
1721 if (IS_AGA)
1722 custom.fmode = par->fmode;
1723
1724 /*
1725 * The minimum period for audio depends on htotal
1726 */
1727
1728 amiga_audio_min_period = div16(par->htotal);
1729
1730 is_lace = par->bplcon0 & BPC0_LACE ? 1 : 0;
1731 #if 1
1732 if (is_lace) {
1733 i = custom.vposr >> 15;
1734 } else {
1735 custom.vposw = custom.vposr | 0x8000;
1736 i = 1;
1737 }
1738 #else
1739 i = 1;
1740 custom.vposw = custom.vposr | 0x8000;
1741 #endif
1742 custom.cop2lc = (u_short *)ZTWO_PADDR(copdisplay.list[currentcop][i]);
1743 }
1744
1745 /*
1746 * (Un)Blank the screen (called by VBlank interrupt)
1747 */
1748
1749 static void ami_do_blank(const struct amifb_par *par)
1750 {
1751 #if defined(CONFIG_FB_AMIGA_AGA)
1752 u_short bplcon3 = par->bplcon3;
1753 #endif
1754 u_char red, green, blue;
1755
1756 if (do_blank > 0) {
1757 custom.dmacon = DMAF_RASTER | DMAF_SPRITE;
1758 red = green = blue = 0;
1759 if (!IS_OCS && do_blank > 1) {
1760 switch (do_blank) {
1761 case FB_BLANK_VSYNC_SUSPEND:
1762 custom.hsstrt = hsstrt2hw(par->hsstrt);
1763 custom.hsstop = hsstop2hw(par->hsstop);
1764 custom.vsstrt = vsstrt2hw(par->vtotal + 4);
1765 custom.vsstop = vsstop2hw(par->vtotal + 4);
1766 break;
1767 case FB_BLANK_HSYNC_SUSPEND:
1768 custom.hsstrt = hsstrt2hw(par->htotal + 16);
1769 custom.hsstop = hsstop2hw(par->htotal + 16);
1770 custom.vsstrt = vsstrt2hw(par->vsstrt);
1771 custom.vsstop = vsstrt2hw(par->vsstop);
1772 break;
1773 case FB_BLANK_POWERDOWN:
1774 custom.hsstrt = hsstrt2hw(par->htotal + 16);
1775 custom.hsstop = hsstop2hw(par->htotal + 16);
1776 custom.vsstrt = vsstrt2hw(par->vtotal + 4);
1777 custom.vsstop = vsstop2hw(par->vtotal + 4);
1778 break;
1779 }
1780 if (!(par->beamcon0 & BMC0_VARBEAMEN)) {
1781 custom.htotal = htotal2hw(par->htotal);
1782 custom.vtotal = vtotal2hw(par->vtotal);
1783 custom.beamcon0 = BMC0_HARDDIS | BMC0_VARBEAMEN |
1784 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARCSYEN;
1785 }
1786 }
1787 } else {
1788 custom.dmacon = DMAF_SETCLR | DMAF_RASTER | DMAF_SPRITE;
1789 red = red0;
1790 green = green0;
1791 blue = blue0;
1792 if (!IS_OCS) {
1793 custom.hsstrt = hsstrt2hw(par->hsstrt);
1794 custom.hsstop = hsstop2hw(par->hsstop);
1795 custom.vsstrt = vsstrt2hw(par->vsstrt);
1796 custom.vsstop = vsstop2hw(par->vsstop);
1797 custom.beamcon0 = par->beamcon0;
1798 }
1799 }
1800 #if defined(CONFIG_FB_AMIGA_AGA)
1801 if (IS_AGA) {
1802 custom.bplcon3 = bplcon3;
1803 custom.color[0] = rgb2hw8_high(red, green, blue);
1804 custom.bplcon3 = bplcon3 | BPC3_LOCT;
1805 custom.color[0] = rgb2hw8_low(red, green, blue);
1806 custom.bplcon3 = bplcon3;
1807 } else
1808 #endif
1809 #if defined(CONFIG_FB_AMIGA_ECS)
1810 if (par->bplcon0 & BPC0_SHRES) {
1811 u_short color, mask;
1812 int i;
1813
1814 mask = 0x3333;
1815 color = rgb2hw2(red, green, blue);
1816 for (i = 12; i >= 0; i -= 4)
1817 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
1818 mask <<= 2; color >>= 2;
1819 for (i = 3; i >= 0; i--)
1820 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
1821 } else
1822 #endif
1823 custom.color[0] = rgb2hw4(red, green, blue);
1824 is_blanked = do_blank > 0 ? do_blank : 0;
1825 }
1826
1827 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix,
1828 const struct amifb_par *par)
1829 {
1830 fix->crsr_width = fix->crsr_xsize = par->crsr.width;
1831 fix->crsr_height = fix->crsr_ysize = par->crsr.height;
1832 fix->crsr_color1 = 17;
1833 fix->crsr_color2 = 18;
1834 return 0;
1835 }
1836
1837 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var,
1838 u_char __user *data,
1839 const struct amifb_par *par)
1840 {
1841 register u_short *lspr, *sspr;
1842 #ifdef __mc68000__
1843 register u_long datawords asm ("d2");
1844 #else
1845 register u_long datawords;
1846 #endif
1847 register short delta;
1848 register u_char color;
1849 short height, width, bits, words;
1850 int size, alloc;
1851
1852 size = par->crsr.height * par->crsr.width;
1853 alloc = var->height * var->width;
1854 var->height = par->crsr.height;
1855 var->width = par->crsr.width;
1856 var->xspot = par->crsr.spot_x;
1857 var->yspot = par->crsr.spot_y;
1858 if (size > var->height * var->width)
1859 return -ENAMETOOLONG;
1860 if (!access_ok(VERIFY_WRITE, data, size))
1861 return -EFAULT;
1862 delta = 1 << par->crsr.fmode;
1863 lspr = lofsprite + (delta << 1);
1864 if (par->bplcon0 & BPC0_LACE)
1865 sspr = shfsprite + (delta << 1);
1866 else
1867 sspr = NULL;
1868 for (height = (short)var->height - 1; height >= 0; height--) {
1869 bits = 0; words = delta; datawords = 0;
1870 for (width = (short)var->width - 1; width >= 0; width--) {
1871 if (bits == 0) {
1872 bits = 16; --words;
1873 #ifdef __mc68000__
1874 asm volatile ("movew %1@(%3:w:2),%0 ; swap %0 ; movew %1@+,%0"
1875 : "=d" (datawords), "=a" (lspr) : "1" (lspr), "d" (delta));
1876 #else
1877 datawords = (*(lspr + delta) << 16) | (*lspr++);
1878 #endif
1879 }
1880 --bits;
1881 #ifdef __mc68000__
1882 asm volatile (
1883 "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; "
1884 "swap %1 ; lslw #1,%1 ; roxlb #1,%0"
1885 : "=d" (color), "=d" (datawords) : "1" (datawords));
1886 #else
1887 color = (((datawords >> 30) & 2)
1888 | ((datawords >> 15) & 1));
1889 datawords <<= 1;
1890 #endif
1891 put_user(color, data++);
1892 }
1893 if (bits > 0) {
1894 --words; ++lspr;
1895 }
1896 while (--words >= 0)
1897 ++lspr;
1898 #ifdef __mc68000__
1899 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
1900 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
1901 #else
1902 lspr += delta;
1903 if (sspr) {
1904 u_short *tmp = lspr;
1905 lspr = sspr;
1906 sspr = tmp;
1907 }
1908 #endif
1909 }
1910 return 0;
1911 }
1912
1913 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var,
1914 u_char __user *data, struct amifb_par *par)
1915 {
1916 register u_short *lspr, *sspr;
1917 #ifdef __mc68000__
1918 register u_long datawords asm ("d2");
1919 #else
1920 register u_long datawords;
1921 #endif
1922 register short delta;
1923 u_short fmode;
1924 short height, width, bits, words;
1925
1926 if (!var->width)
1927 return -EINVAL;
1928 else if (var->width <= 16)
1929 fmode = TAG_FMODE_1;
1930 else if (var->width <= 32)
1931 fmode = TAG_FMODE_2;
1932 else if (var->width <= 64)
1933 fmode = TAG_FMODE_4;
1934 else
1935 return -EINVAL;
1936 if (fmode > maxfmode)
1937 return -EINVAL;
1938 if (!var->height)
1939 return -EINVAL;
1940 if (!access_ok(VERIFY_READ, data, var->width * var->height))
1941 return -EFAULT;
1942 delta = 1 << fmode;
1943 lofsprite = shfsprite = (u_short *)spritememory;
1944 lspr = lofsprite + (delta << 1);
1945 if (par->bplcon0 & BPC0_LACE) {
1946 if (((var->height + 4) << fmode << 2) > SPRITEMEMSIZE)
1947 return -EINVAL;
1948 memset(lspr, 0, (var->height + 4) << fmode << 2);
1949 shfsprite += ((var->height + 5)&-2) << fmode;
1950 sspr = shfsprite + (delta << 1);
1951 } else {
1952 if (((var->height + 2) << fmode << 2) > SPRITEMEMSIZE)
1953 return -EINVAL;
1954 memset(lspr, 0, (var->height + 2) << fmode << 2);
1955 sspr = NULL;
1956 }
1957 for (height = (short)var->height - 1; height >= 0; height--) {
1958 bits = 16; words = delta; datawords = 0;
1959 for (width = (short)var->width - 1; width >= 0; width--) {
1960 unsigned long tdata = 0;
1961 get_user(tdata, data);
1962 data++;
1963 #ifdef __mc68000__
1964 asm volatile (
1965 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0 ; "
1966 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0"
1967 : "=d" (datawords)
1968 : "0" (datawords), "d" (tdata));
1969 #else
1970 datawords = ((datawords << 1) & 0xfffefffe);
1971 datawords |= tdata & 1;
1972 datawords |= (tdata & 2) << (16 - 1);
1973 #endif
1974 if (--bits == 0) {
1975 bits = 16; --words;
1976 #ifdef __mc68000__
1977 asm volatile ("swap %2 ; movew %2,%0@(%3:w:2) ; swap %2 ; movew %2,%0@+"
1978 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta));
1979 #else
1980 *(lspr + delta) = (u_short) (datawords >> 16);
1981 *lspr++ = (u_short) (datawords & 0xffff);
1982 #endif
1983 }
1984 }
1985 if (bits < 16) {
1986 --words;
1987 #ifdef __mc68000__
1988 asm volatile (
1989 "swap %2 ; lslw %4,%2 ; movew %2,%0@(%3:w:2) ; "
1990 "swap %2 ; lslw %4,%2 ; movew %2,%0@+"
1991 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta), "d" (bits));
1992 #else
1993 *(lspr + delta) = (u_short) (datawords >> (16 + bits));
1994 *lspr++ = (u_short) ((datawords & 0x0000ffff) >> bits);
1995 #endif
1996 }
1997 while (--words >= 0) {
1998 #ifdef __mc68000__
1999 asm volatile ("moveql #0,%%d0 ; movew %%d0,%0@(%2:w:2) ; movew %%d0,%0@+"
2000 : "=a" (lspr) : "0" (lspr), "d" (delta) : "d0");
2001 #else
2002 *(lspr + delta) = 0;
2003 *lspr++ = 0;
2004 #endif
2005 }
2006 #ifdef __mc68000__
2007 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
2008 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
2009 #else
2010 lspr += delta;
2011 if (sspr) {
2012 u_short *tmp = lspr;
2013 lspr = sspr;
2014 sspr = tmp;
2015 }
2016 #endif
2017 }
2018 par->crsr.height = var->height;
2019 par->crsr.width = var->width;
2020 par->crsr.spot_x = var->xspot;
2021 par->crsr.spot_y = var->yspot;
2022 par->crsr.fmode = fmode;
2023 if (IS_AGA) {
2024 par->fmode &= ~(FMODE_SPAGEM | FMODE_SPR32);
2025 par->fmode |= sprfetchmode[fmode];
2026 custom.fmode = par->fmode;
2027 }
2028 return 0;
2029 }
2030
2031 static int ami_get_cursorstate(struct fb_cursorstate *state,
2032 const struct amifb_par *par)
2033 {
2034 state->xoffset = par->crsr.crsr_x;
2035 state->yoffset = par->crsr.crsr_y;
2036 state->mode = cursormode;
2037 return 0;
2038 }
2039
2040 static int ami_set_cursorstate(struct fb_cursorstate *state,
2041 struct amifb_par *par)
2042 {
2043 par->crsr.crsr_x = state->xoffset;
2044 par->crsr.crsr_y = state->yoffset;
2045 if ((cursormode = state->mode) == FB_CURSOR_OFF)
2046 cursorstate = -1;
2047 do_cursor = 1;
2048 return 0;
2049 }
2050
2051 static void ami_set_sprite(const struct amifb_par *par)
2052 {
2053 copins *copl, *cops;
2054 u_short hs, vs, ve;
2055 u_long pl, ps, pt;
2056 short mx, my;
2057
2058 cops = copdisplay.list[currentcop][0];
2059 copl = copdisplay.list[currentcop][1];
2060 ps = pl = ZTWO_PADDR(dummysprite);
2061 mx = par->crsr.crsr_x - par->crsr.spot_x;
2062 my = par->crsr.crsr_y - par->crsr.spot_y;
2063 if (!(par->vmode & FB_VMODE_YWRAP)) {
2064 mx -= par->xoffset;
2065 my -= par->yoffset;
2066 }
2067 if (!is_blanked && cursorstate > 0 && par->crsr.height > 0 &&
2068 mx > -(short)par->crsr.width && mx < par->xres &&
2069 my > -(short)par->crsr.height && my < par->yres) {
2070 pl = ZTWO_PADDR(lofsprite);
2071 hs = par->diwstrt_h + (mx << par->clk_shift) - 4;
2072 vs = par->diwstrt_v + (my << par->line_shift);
2073 ve = vs + (par->crsr.height << par->line_shift);
2074 if (par->bplcon0 & BPC0_LACE) {
2075 ps = ZTWO_PADDR(shfsprite);
2076 lofsprite[0] = spr2hw_pos(vs, hs);
2077 shfsprite[0] = spr2hw_pos(vs + 1, hs);
2078 if (mod2(vs)) {
2079 lofsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
2080 shfsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs + 1, hs, ve + 1);
2081 pt = pl; pl = ps; ps = pt;
2082 } else {
2083 lofsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs, hs, ve + 1);
2084 shfsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs + 1, hs, ve);
2085 }
2086 } else {
2087 lofsprite[0] = spr2hw_pos(vs, hs) | (IS_AGA && (par->fmode & FMODE_BSCAN2) ? 0x80 : 0);
2088 lofsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
2089 }
2090 }
2091 copl[cop_spr0ptrh].w[1] = highw(pl);
2092 copl[cop_spr0ptrl].w[1] = loww(pl);
2093 if (par->bplcon0 & BPC0_LACE) {
2094 cops[cop_spr0ptrh].w[1] = highw(ps);
2095 cops[cop_spr0ptrl].w[1] = loww(ps);
2096 }
2097 }
2098
2099
2100 /*
2101 * Initialise the Copper Initialisation List
2102 */
2103
2104 static void __init ami_init_copper(void)
2105 {
2106 copins *cop = copdisplay.init;
2107 u_long p;
2108 int i;
2109
2110 if (!IS_OCS) {
2111 (cop++)->l = CMOVE(BPC0_COLOR | BPC0_SHRES | BPC0_ECSENA, bplcon0);
2112 (cop++)->l = CMOVE(0x0181, diwstrt);
2113 (cop++)->l = CMOVE(0x0281, diwstop);
2114 (cop++)->l = CMOVE(0x0000, diwhigh);
2115 } else
2116 (cop++)->l = CMOVE(BPC0_COLOR, bplcon0);
2117 p = ZTWO_PADDR(dummysprite);
2118 for (i = 0; i < 8; i++) {
2119 (cop++)->l = CMOVE(0, spr[i].pos);
2120 (cop++)->l = CMOVE(highw(p), sprpt[i]);
2121 (cop++)->l = CMOVE2(loww(p), sprpt[i]);
2122 }
2123
2124 (cop++)->l = CMOVE(IF_SETCLR | IF_COPER, intreq);
2125 copdisplay.wait = cop;
2126 (cop++)->l = CEND;
2127 (cop++)->l = CMOVE(0, copjmp2);
2128 cop->l = CEND;
2129
2130 custom.cop1lc = (u_short *)ZTWO_PADDR(copdisplay.init);
2131 custom.copjmp1 = 0;
2132 }
2133
2134 static void ami_reinit_copper(const struct amifb_par *par)
2135 {
2136 copdisplay.init[cip_bplcon0].w[1] = ~(BPC0_BPU3 | BPC0_BPU2 | BPC0_BPU1 | BPC0_BPU0) & par->bplcon0;
2137 copdisplay.wait->l = CWAIT(32, par->diwstrt_v - 4);
2138 }
2139
2140
2141 /*
2142 * Rebuild the Copper List
2143 *
2144 * We only change the things that are not static
2145 */
2146
2147 static void ami_rebuild_copper(const struct amifb_par *par)
2148 {
2149 copins *copl, *cops;
2150 u_short line, h_end1, h_end2;
2151 short i;
2152 u_long p;
2153
2154 if (IS_AGA && maxfmode + par->clk_shift == 0)
2155 h_end1 = par->diwstrt_h - 64;
2156 else
2157 h_end1 = par->htotal - 32;
2158 h_end2 = par->ddfstop + 64;
2159
2160 ami_set_sprite(par);
2161
2162 copl = copdisplay.rebuild[1];
2163 p = par->bplpt0;
2164 if (par->vmode & FB_VMODE_YWRAP) {
2165 if ((par->vyres - par->yoffset) != 1 || !mod2(par->diwstrt_v)) {
2166 if (par->yoffset > par->vyres - par->yres) {
2167 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2168 (copl++)->l = CMOVE(highw(p), bplpt[i]);
2169 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
2170 }
2171 line = par->diwstrt_v + ((par->vyres - par->yoffset) << par->line_shift) - 1;
2172 while (line >= 512) {
2173 (copl++)->l = CWAIT(h_end1, 510);
2174 line -= 512;
2175 }
2176 if (line >= 510 && IS_AGA && maxfmode + par->clk_shift == 0)
2177 (copl++)->l = CWAIT(h_end1, line);
2178 else
2179 (copl++)->l = CWAIT(h_end2, line);
2180 p = par->bplpt0wrap;
2181 }
2182 } else
2183 p = par->bplpt0wrap;
2184 }
2185 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2186 (copl++)->l = CMOVE(highw(p), bplpt[i]);
2187 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
2188 }
2189 copl->l = CEND;
2190
2191 if (par->bplcon0 & BPC0_LACE) {
2192 cops = copdisplay.rebuild[0];
2193 p = par->bplpt0;
2194 if (mod2(par->diwstrt_v))
2195 p -= par->next_line;
2196 else
2197 p += par->next_line;
2198 if (par->vmode & FB_VMODE_YWRAP) {
2199 if ((par->vyres - par->yoffset) != 1 || mod2(par->diwstrt_v)) {
2200 if (par->yoffset > par->vyres - par->yres + 1) {
2201 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2202 (cops++)->l = CMOVE(highw(p), bplpt[i]);
2203 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
2204 }
2205 line = par->diwstrt_v + ((par->vyres - par->yoffset) << par->line_shift) - 2;
2206 while (line >= 512) {
2207 (cops++)->l = CWAIT(h_end1, 510);
2208 line -= 512;
2209 }
2210 if (line > 510 && IS_AGA && maxfmode + par->clk_shift == 0)
2211 (cops++)->l = CWAIT(h_end1, line);
2212 else
2213 (cops++)->l = CWAIT(h_end2, line);
2214 p = par->bplpt0wrap;
2215 if (mod2(par->diwstrt_v + par->vyres -
2216 par->yoffset))
2217 p -= par->next_line;
2218 else
2219 p += par->next_line;
2220 }
2221 } else
2222 p = par->bplpt0wrap - par->next_line;
2223 }
2224 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2225 (cops++)->l = CMOVE(highw(p), bplpt[i]);
2226 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
2227 }
2228 cops->l = CEND;
2229 }
2230 }
2231
2232
2233 /*
2234 * Build the Copper List
2235 */
2236
2237 static void ami_build_copper(struct fb_info *info)
2238 {
2239 struct amifb_par *par = info->par;
2240 copins *copl, *cops;
2241 u_long p;
2242
2243 currentcop = 1 - currentcop;
2244
2245 copl = copdisplay.list[currentcop][1];
2246
2247 (copl++)->l = CWAIT(0, 10);
2248 (copl++)->l = CMOVE(par->bplcon0, bplcon0);
2249 (copl++)->l = CMOVE(0, sprpt[0]);
2250 (copl++)->l = CMOVE2(0, sprpt[0]);
2251
2252 if (par->bplcon0 & BPC0_LACE) {
2253 cops = copdisplay.list[currentcop][0];
2254
2255 (cops++)->l = CWAIT(0, 10);
2256 (cops++)->l = CMOVE(par->bplcon0, bplcon0);
2257 (cops++)->l = CMOVE(0, sprpt[0]);
2258 (cops++)->l = CMOVE2(0, sprpt[0]);
2259
2260 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v + 1), diwstrt);
2261 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v + 1), diwstop);
2262 (cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
2263 (cops++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
2264 if (!IS_OCS) {
2265 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v + 1,
2266 par->diwstop_h, par->diwstop_v + 1), diwhigh);
2267 (cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
2268 par->diwstop_h, par->diwstop_v), diwhigh);
2269 #if 0
2270 if (par->beamcon0 & BMC0_VARBEAMEN) {
2271 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
2272 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt + 1), vbstrt);
2273 (copl++)->l = CMOVE(vbstop2hw(par->vbstop + 1), vbstop);
2274 (cops++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
2275 (cops++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
2276 (cops++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
2277 }
2278 #endif
2279 }
2280 p = ZTWO_PADDR(copdisplay.list[currentcop][0]);
2281 (copl++)->l = CMOVE(highw(p), cop2lc);
2282 (copl++)->l = CMOVE2(loww(p), cop2lc);
2283 p = ZTWO_PADDR(copdisplay.list[currentcop][1]);
2284 (cops++)->l = CMOVE(highw(p), cop2lc);
2285 (cops++)->l = CMOVE2(loww(p), cop2lc);
2286 copdisplay.rebuild[0] = cops;
2287 } else {
2288 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
2289 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
2290 if (!IS_OCS) {
2291 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
2292 par->diwstop_h, par->diwstop_v), diwhigh);
2293 #if 0
2294 if (par->beamcon0 & BMC0_VARBEAMEN) {
2295 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
2296 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
2297 (copl++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
2298 }
2299 #endif
2300 }
2301 }
2302 copdisplay.rebuild[1] = copl;
2303
2304 ami_update_par(info);
2305 ami_rebuild_copper(info->par);
2306 }
2307
2308
2309 static void __init amifb_setup_mcap(char *spec)
2310 {
2311 char *p;
2312 int vmin, vmax, hmin, hmax;
2313
2314 /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax>
2315 * <V*> vertical freq. in Hz
2316 * <H*> horizontal freq. in kHz
2317 */
2318
2319 if (!(p = strsep(&spec, ";")) || !*p)
2320 return;
2321 vmin = simple_strtoul(p, NULL, 10);
2322 if (vmin <= 0)
2323 return;
2324 if (!(p = strsep(&spec, ";")) || !*p)
2325 return;
2326 vmax = simple_strtoul(p, NULL, 10);
2327 if (vmax <= 0 || vmax <= vmin)
2328 return;
2329 if (!(p = strsep(&spec, ";")) || !*p)
2330 return;
2331 hmin = 1000 * simple_strtoul(p, NULL, 10);
2332 if (hmin <= 0)
2333 return;
2334 if (!(p = strsep(&spec, "")) || !*p)
2335 return;
2336 hmax = 1000 * simple_strtoul(p, NULL, 10);
2337 if (hmax <= 0 || hmax <= hmin)
2338 return;
2339
2340 amifb_hfmin = hmin;
2341 amifb_hfmax = hmax;
2342 amifb_vfmin = vmin;
2343 amifb_vfmax = vmax;
2344 }
2345
2346 static int __init amifb_setup(char *options)
2347 {
2348 char *this_opt;
2349
2350 if (!options || !*options)
2351 return 0;
2352
2353 while ((this_opt = strsep(&options, ",")) != NULL) {
2354 if (!*this_opt)
2355 continue;
2356 if (!strcmp(this_opt, "inverse")) {
2357 fb_invert_cmaps();
2358 } else if (!strcmp(this_opt, "ilbm"))
2359 amifb_ilbm = 1;
2360 else if (!strncmp(this_opt, "monitorcap:", 11))
2361 amifb_setup_mcap(this_opt + 11);
2362 else if (!strncmp(this_opt, "fstart:", 7))
2363 min_fstrt = simple_strtoul(this_opt + 7, NULL, 0);
2364 else
2365 mode_option = this_opt;
2366 }
2367
2368 if (min_fstrt < 48)
2369 min_fstrt = 48;
2370
2371 return 0;
2372 }
2373
2374
2375 static int amifb_check_var(struct fb_var_screeninfo *var,
2376 struct fb_info *info)
2377 {
2378 int err;
2379 struct amifb_par par;
2380
2381 /* Validate wanted screen parameters */
2382 err = ami_decode_var(var, &par, info);
2383 if (err)
2384 return err;
2385
2386 /* Encode (possibly rounded) screen parameters */
2387 ami_encode_var(var, &par);
2388 return 0;
2389 }
2390
2391
2392 static int amifb_set_par(struct fb_info *info)
2393 {
2394 struct amifb_par *par = info->par;
2395 int error;
2396
2397 do_vmode_pan = 0;
2398 do_vmode_full = 0;
2399
2400 /* Decode wanted screen parameters */
2401 error = ami_decode_var(&info->var, par, info);
2402 if (error)
2403 return error;
2404
2405 /* Set new videomode */
2406 ami_build_copper(info);
2407
2408 /* Set VBlank trigger */
2409 do_vmode_full = 1;
2410
2411 /* Update fix for new screen parameters */
2412 if (par->bpp == 1) {
2413 info->fix.type = FB_TYPE_PACKED_PIXELS;
2414 info->fix.type_aux = 0;
2415 } else if (amifb_ilbm) {
2416 info->fix.type = FB_TYPE_INTERLEAVED_PLANES;
2417 info->fix.type_aux = par->next_line;
2418 } else {
2419 info->fix.type = FB_TYPE_PLANES;
2420 info->fix.type_aux = 0;
2421 }
2422 info->fix.line_length = div8(upx(16 << maxfmode, par->vxres));
2423
2424 if (par->vmode & FB_VMODE_YWRAP) {
2425 info->fix.ywrapstep = 1;
2426 info->fix.xpanstep = 0;
2427 info->fix.ypanstep = 0;
2428 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YWRAP |
2429 FBINFO_READS_FAST; /* override SCROLL_REDRAW */
2430 } else {
2431 info->fix.ywrapstep = 0;
2432 if (par->vmode & FB_VMODE_SMOOTH_XPAN)
2433 info->fix.xpanstep = 1;
2434 else
2435 info->fix.xpanstep = 16 << maxfmode;
2436 info->fix.ypanstep = 1;
2437 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
2438 }
2439 return 0;
2440 }
2441
2442
2443 /*
2444 * Set a single color register. The values supplied are already
2445 * rounded down to the hardware's capabilities (according to the
2446 * entries in the var structure). Return != 0 for invalid regno.
2447 */
2448
2449 static int amifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
2450 u_int transp, struct fb_info *info)
2451 {
2452 const struct amifb_par *par = info->par;
2453
2454 if (IS_AGA) {
2455 if (regno > 255)
2456 return 1;
2457 } else if (par->bplcon0 & BPC0_SHRES) {
2458 if (regno > 3)
2459 return 1;
2460 } else {
2461 if (regno > 31)
2462 return 1;
2463 }
2464 red >>= 8;
2465 green >>= 8;
2466 blue >>= 8;
2467 if (!regno) {
2468 red0 = red;
2469 green0 = green;
2470 blue0 = blue;
2471 }
2472
2473 /*
2474 * Update the corresponding Hardware Color Register, unless it's Color
2475 * Register 0 and the screen is blanked.
2476 *
2477 * VBlank is switched off to protect bplcon3 or ecs_palette[] from
2478 * being changed by ami_do_blank() during the VBlank.
2479 */
2480
2481 if (regno || !is_blanked) {
2482 #if defined(CONFIG_FB_AMIGA_AGA)
2483 if (IS_AGA) {
2484 u_short bplcon3 = par->bplcon3;
2485 VBlankOff();
2486 custom.bplcon3 = bplcon3 | (regno << 8 & 0xe000);
2487 custom.color[regno & 31] = rgb2hw8_high(red, green,
2488 blue);
2489 custom.bplcon3 = bplcon3 | (regno << 8 & 0xe000) |
2490 BPC3_LOCT;
2491 custom.color[regno & 31] = rgb2hw8_low(red, green,
2492 blue);
2493 custom.bplcon3 = bplcon3;
2494 VBlankOn();
2495 } else
2496 #endif
2497 #if defined(CONFIG_FB_AMIGA_ECS)
2498 if (par->bplcon0 & BPC0_SHRES) {
2499 u_short color, mask;
2500 int i;
2501
2502 mask = 0x3333;
2503 color = rgb2hw2(red, green, blue);
2504 VBlankOff();
2505 for (i = regno + 12; i >= (int)regno; i -= 4)
2506 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
2507 mask <<= 2; color >>= 2;
2508 regno = down16(regno) + mul4(mod4(regno));
2509 for (i = regno + 3; i >= (int)regno; i--)
2510 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
2511 VBlankOn();
2512 } else
2513 #endif
2514 custom.color[regno] = rgb2hw4(red, green, blue);
2515 }
2516 return 0;
2517 }
2518
2519
2520 /*
2521 * Blank the display.
2522 */
2523
2524 static int amifb_blank(int blank, struct fb_info *info)
2525 {
2526 do_blank = blank ? blank : -1;
2527
2528 return 0;
2529 }
2530
2531
2532 /*
2533 * Pan or Wrap the Display
2534 *
2535 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
2536 */
2537
2538 static int amifb_pan_display(struct fb_var_screeninfo *var,
2539 struct fb_info *info)
2540 {
2541 if (var->vmode & FB_VMODE_YWRAP) {
2542 if (var->yoffset < 0 ||
2543 var->yoffset >= info->var.yres_virtual || var->xoffset)
2544 return -EINVAL;
2545 } else {
2546 /*
2547 * TODO: There will be problems when xpan!=1, so some columns
2548 * on the right side will never be seen
2549 */
2550 if (var->xoffset + info->var.xres >
2551 upx(16 << maxfmode, info->var.xres_virtual) ||
2552 var->yoffset + info->var.yres > info->var.yres_virtual)
2553 return -EINVAL;
2554 }
2555 ami_pan_var(var, info);
2556 info->var.xoffset = var->xoffset;
2557 info->var.yoffset = var->yoffset;
2558 if (var->vmode & FB_VMODE_YWRAP)
2559 info->var.vmode |= FB_VMODE_YWRAP;
2560 else
2561 info->var.vmode &= ~FB_VMODE_YWRAP;
2562 return 0;
2563 }
2564
2565
2566 #if BITS_PER_LONG == 32
2567 #define BYTES_PER_LONG 4
2568 #define SHIFT_PER_LONG 5
2569 #elif BITS_PER_LONG == 64
2570 #define BYTES_PER_LONG 8
2571 #define SHIFT_PER_LONG 6
2572 #else
2573 #define Please update me
2574 #endif
2575
2576
2577 /*
2578 * Compose two values, using a bitmask as decision value
2579 * This is equivalent to (a & mask) | (b & ~mask)
2580 */
2581
2582 static inline unsigned long comp(unsigned long a, unsigned long b,
2583 unsigned long mask)
2584 {
2585 return ((a ^ b) & mask) ^ b;
2586 }
2587
2588
2589 static inline unsigned long xor(unsigned long a, unsigned long b,
2590 unsigned long mask)
2591 {
2592 return (a & mask) ^ b;
2593 }
2594
2595
2596 /*
2597 * Unaligned forward bit copy using 32-bit or 64-bit memory accesses
2598 */
2599
2600 static void bitcpy(unsigned long *dst, int dst_idx, const unsigned long *src,
2601 int src_idx, u32 n)
2602 {
2603 unsigned long first, last;
2604 int shift = dst_idx - src_idx, left, right;
2605 unsigned long d0, d1;
2606 int m;
2607
2608 if (!n)
2609 return;
2610
2611 shift = dst_idx - src_idx;
2612 first = ~0UL >> dst_idx;
2613 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
2614
2615 if (!shift) {
2616 // Same alignment for source and dest
2617
2618 if (dst_idx + n <= BITS_PER_LONG) {
2619 // Single word
2620 if (last)
2621 first &= last;
2622 *dst = comp(*src, *dst, first);
2623 } else {
2624 // Multiple destination words
2625 // Leading bits
2626 if (first) {
2627 *dst = comp(*src, *dst, first);
2628 dst++;
2629 src++;
2630 n -= BITS_PER_LONG - dst_idx;
2631 }
2632
2633 // Main chunk
2634 n /= BITS_PER_LONG;
2635 while (n >= 8) {
2636 *dst++ = *src++;
2637 *dst++ = *src++;
2638 *dst++ = *src++;
2639 *dst++ = *src++;
2640 *dst++ = *src++;
2641 *dst++ = *src++;
2642 *dst++ = *src++;
2643 *dst++ = *src++;
2644 n -= 8;
2645 }
2646 while (n--)
2647 *dst++ = *src++;
2648
2649 // Trailing bits
2650 if (last)
2651 *dst = comp(*src, *dst, last);
2652 }
2653 } else {
2654 // Different alignment for source and dest
2655
2656 right = shift & (BITS_PER_LONG - 1);
2657 left = -shift & (BITS_PER_LONG - 1);
2658
2659 if (dst_idx + n <= BITS_PER_LONG) {
2660 // Single destination word
2661 if (last)
2662 first &= last;
2663 if (shift > 0) {
2664 // Single source word
2665 *dst = comp(*src >> right, *dst, first);
2666 } else if (src_idx + n <= BITS_PER_LONG) {
2667 // Single source word
2668 *dst = comp(*src << left, *dst, first);
2669 } else {
2670 // 2 source words
2671 d0 = *src++;
2672 d1 = *src;
2673 *dst = comp(d0 << left | d1 >> right, *dst,
2674 first);
2675 }
2676 } else {
2677 // Multiple destination words
2678 d0 = *src++;
2679 // Leading bits
2680 if (shift > 0) {
2681 // Single source word
2682 *dst = comp(d0 >> right, *dst, first);
2683 dst++;
2684 n -= BITS_PER_LONG - dst_idx;
2685 } else {
2686 // 2 source words
2687 d1 = *src++;
2688 *dst = comp(d0 << left | d1 >> right, *dst,
2689 first);
2690 d0 = d1;
2691 dst++;
2692 n -= BITS_PER_LONG - dst_idx;
2693 }
2694
2695 // Main chunk
2696 m = n % BITS_PER_LONG;
2697 n /= BITS_PER_LONG;
2698 while (n >= 4) {
2699 d1 = *src++;
2700 *dst++ = d0 << left | d1 >> right;
2701 d0 = d1;
2702 d1 = *src++;
2703 *dst++ = d0 << left | d1 >> right;
2704 d0 = d1;
2705 d1 = *src++;
2706 *dst++ = d0 << left | d1 >> right;
2707 d0 = d1;
2708 d1 = *src++;
2709 *dst++ = d0 << left | d1 >> right;
2710 d0 = d1;
2711 n -= 4;
2712 }
2713 while (n--) {
2714 d1 = *src++;
2715 *dst++ = d0 << left | d1 >> right;
2716 d0 = d1;
2717 }
2718
2719 // Trailing bits
2720 if (last) {
2721 if (m <= right) {
2722 // Single source word
2723 *dst = comp(d0 << left, *dst, last);
2724 } else {
2725 // 2 source words
2726 d1 = *src;
2727 *dst = comp(d0 << left | d1 >> right,
2728 *dst, last);
2729 }
2730 }
2731 }
2732 }
2733 }
2734
2735
2736 /*
2737 * Unaligned reverse bit copy using 32-bit or 64-bit memory accesses
2738 */
2739
2740 static void bitcpy_rev(unsigned long *dst, int dst_idx,
2741 const unsigned long *src, int src_idx, u32 n)
2742 {
2743 unsigned long first, last;
2744 int shift = dst_idx - src_idx, left, right;
2745 unsigned long d0, d1;
2746 int m;
2747
2748 if (!n)
2749 return;
2750
2751 dst += (n - 1) / BITS_PER_LONG;
2752 src += (n - 1) / BITS_PER_LONG;
2753 if ((n - 1) % BITS_PER_LONG) {
2754 dst_idx += (n - 1) % BITS_PER_LONG;
2755 dst += dst_idx >> SHIFT_PER_LONG;
2756 dst_idx &= BITS_PER_LONG - 1;
2757 src_idx += (n - 1) % BITS_PER_LONG;
2758 src += src_idx >> SHIFT_PER_LONG;
2759 src_idx &= BITS_PER_LONG - 1;
2760 }
2761
2762 shift = dst_idx - src_idx;
2763 first = ~0UL << (BITS_PER_LONG - 1 - dst_idx);
2764 last = ~(~0UL << (BITS_PER_LONG - 1 - ((dst_idx - n) % BITS_PER_LONG)));
2765
2766 if (!shift) {
2767 // Same alignment for source and dest
2768
2769 if ((unsigned long)dst_idx + 1 >= n) {
2770 // Single word
2771 if (last)
2772 first &= last;
2773 *dst = comp(*src, *dst, first);
2774 } else {
2775 // Multiple destination words
2776 // Leading bits
2777 if (first) {
2778 *dst = comp(*src, *dst, first);
2779 dst--;
2780 src--;
2781 n -= dst_idx + 1;
2782 }
2783
2784 // Main chunk
2785 n /= BITS_PER_LONG;
2786 while (n >= 8) {
2787 *dst-- = *src--;
2788 *dst-- = *src--;
2789 *dst-- = *src--;
2790 *dst-- = *src--;
2791 *dst-- = *src--;
2792 *dst-- = *src--;
2793 *dst-- = *src--;
2794 *dst-- = *src--;
2795 n -= 8;
2796 }
2797 while (n--)
2798 *dst-- = *src--;
2799
2800 // Trailing bits
2801 if (last)
2802 *dst = comp(*src, *dst, last);
2803 }
2804 } else {
2805 // Different alignment for source and dest
2806
2807 right = shift & (BITS_PER_LONG - 1);
2808 left = -shift & (BITS_PER_LONG - 1);
2809
2810 if ((unsigned long)dst_idx + 1 >= n) {
2811 // Single destination word
2812 if (last)
2813 first &= last;
2814 if (shift < 0) {
2815 // Single source word
2816 *dst = comp(*src << left, *dst, first);
2817 } else if (1 + (unsigned long)src_idx >= n) {
2818 // Single source word
2819 *dst = comp(*src >> right, *dst, first);
2820 } else {
2821 // 2 source words
2822 d0 = *src--;
2823 d1 = *src;
2824 *dst = comp(d0 >> right | d1 << left, *dst,
2825 first);
2826 }
2827 } else {
2828 // Multiple destination words
2829 d0 = *src--;
2830 // Leading bits
2831 if (shift < 0) {
2832 // Single source word
2833 *dst = comp(d0 << left, *dst, first);
2834 dst--;
2835 n -= dst_idx + 1;
2836 } else {
2837 // 2 source words
2838 d1 = *src--;
2839 *dst = comp(d0 >> right | d1 << left, *dst,
2840 first);
2841 d0 = d1;
2842 dst--;
2843 n -= dst_idx + 1;
2844 }
2845
2846 // Main chunk
2847 m = n % BITS_PER_LONG;
2848 n /= BITS_PER_LONG;
2849 while (n >= 4) {
2850 d1 = *src--;
2851 *dst-- = d0 >> right | d1 << left;
2852 d0 = d1;
2853 d1 = *src--;
2854 *dst-- = d0 >> right | d1 << left;
2855 d0 = d1;
2856 d1 = *src--;
2857 *dst-- = d0 >> right | d1 << left;
2858 d0 = d1;
2859 d1 = *src--;
2860 *dst-- = d0 >> right | d1 << left;
2861 d0 = d1;
2862 n -= 4;
2863 }
2864 while (n--) {
2865 d1 = *src--;
2866 *dst-- = d0 >> right | d1 << left;
2867 d0 = d1;
2868 }
2869
2870 // Trailing bits
2871 if (last) {
2872 if (m <= left) {
2873 // Single source word
2874 *dst = comp(d0 >> right, *dst, last);
2875 } else {
2876 // 2 source words
2877 d1 = *src;
2878 *dst = comp(d0 >> right | d1 << left,
2879 *dst, last);
2880 }
2881 }
2882 }
2883 }
2884 }
2885
2886
2887 /*
2888 * Unaligned forward inverting bit copy using 32-bit or 64-bit memory
2889 * accesses
2890 */
2891
2892 static void bitcpy_not(unsigned long *dst, int dst_idx,
2893 const unsigned long *src, int src_idx, u32 n)
2894 {
2895 unsigned long first, last;
2896 int shift = dst_idx - src_idx, left, right;
2897 unsigned long d0, d1;
2898 int m;
2899
2900 if (!n)
2901 return;
2902
2903 shift = dst_idx - src_idx;
2904 first = ~0UL >> dst_idx;
2905 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
2906
2907 if (!shift) {
2908 // Same alignment for source and dest
2909
2910 if (dst_idx + n <= BITS_PER_LONG) {
2911 // Single word
2912 if (last)
2913 first &= last;
2914 *dst = comp(~*src, *dst, first);
2915 } else {
2916 // Multiple destination words
2917 // Leading bits
2918 if (first) {
2919 *dst = comp(~*src, *dst, first);
2920 dst++;
2921 src++;
2922 n -= BITS_PER_LONG - dst_idx;
2923 }
2924
2925 // Main chunk
2926 n /= BITS_PER_LONG;
2927 while (n >= 8) {
2928 *dst++ = ~*src++;
2929 *dst++ = ~*src++;
2930 *dst++ = ~*src++;
2931 *dst++ = ~*src++;
2932 *dst++ = ~*src++;
2933 *dst++ = ~*src++;
2934 *dst++ = ~*src++;
2935 *dst++ = ~*src++;
2936 n -= 8;
2937 }
2938 while (n--)
2939 *dst++ = ~*src++;
2940
2941 // Trailing bits
2942 if (last)
2943 *dst = comp(~*src, *dst, last);
2944 }
2945 } else {
2946 // Different alignment for source and dest
2947
2948 right = shift & (BITS_PER_LONG - 1);
2949 left = -shift & (BITS_PER_LONG - 1);
2950
2951 if (dst_idx + n <= BITS_PER_LONG) {
2952 // Single destination word
2953 if (last)
2954 first &= last;
2955 if (shift > 0) {
2956 // Single source word
2957 *dst = comp(~*src >> right, *dst, first);
2958 } else if (src_idx + n <= BITS_PER_LONG) {
2959 // Single source word
2960 *dst = comp(~*src << left, *dst, first);
2961 } else {
2962 // 2 source words
2963 d0 = ~*src++;
2964 d1 = ~*src;
2965 *dst = comp(d0 << left | d1 >> right, *dst,
2966 first);
2967 }
2968 } else {
2969 // Multiple destination words
2970 d0 = ~*src++;
2971 // Leading bits
2972 if (shift > 0) {
2973 // Single source word
2974 *dst = comp(d0 >> right, *dst, first);
2975 dst++;
2976 n -= BITS_PER_LONG - dst_idx;
2977 } else {
2978 // 2 source words
2979 d1 = ~*src++;
2980 *dst = comp(d0 << left | d1 >> right, *dst,
2981 first);
2982 d0 = d1;
2983 dst++;
2984 n -= BITS_PER_LONG - dst_idx;
2985 }
2986
2987 // Main chunk
2988 m = n % BITS_PER_LONG;
2989 n /= BITS_PER_LONG;
2990 while (n >= 4) {
2991 d1 = ~*src++;
2992 *dst++ = d0 << left | d1 >> right;
2993 d0 = d1;
2994 d1 = ~*src++;
2995 *dst++ = d0 << left | d1 >> right;
2996 d0 = d1;
2997 d1 = ~*src++;
2998 *dst++ = d0 << left | d1 >> right;
2999 d0 = d1;
3000 d1 = ~*src++;
3001 *dst++ = d0 << left | d1 >> right;
3002 d0 = d1;
3003 n -= 4;
3004 }
3005 while (n--) {
3006 d1 = ~*src++;
3007 *dst++ = d0 << left | d1 >> right;
3008 d0 = d1;
3009 }
3010
3011 // Trailing bits
3012 if (last) {
3013 if (m <= right) {
3014 // Single source word
3015 *dst = comp(d0 << left, *dst, last);
3016 } else {
3017 // 2 source words
3018 d1 = ~*src;
3019 *dst = comp(d0 << left | d1 >> right,
3020 *dst, last);
3021 }
3022 }
3023 }
3024 }
3025 }
3026
3027
3028 /*
3029 * Unaligned 32-bit pattern fill using 32/64-bit memory accesses
3030 */
3031
3032 static void bitfill32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
3033 {
3034 unsigned long val = pat;
3035 unsigned long first, last;
3036
3037 if (!n)
3038 return;
3039
3040 #if BITS_PER_LONG == 64
3041 val |= val << 32;
3042 #endif
3043
3044 first = ~0UL >> dst_idx;
3045 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
3046
3047 if (dst_idx + n <= BITS_PER_LONG) {
3048 // Single word
3049 if (last)
3050 first &= last;
3051 *dst = comp(val, *dst, first);
3052 } else {
3053 // Multiple destination words
3054 // Leading bits
3055 if (first) {
3056 *dst = comp(val, *dst, first);
3057 dst++;
3058 n -= BITS_PER_LONG - dst_idx;
3059 }
3060
3061 // Main chunk
3062 n /= BITS_PER_LONG;
3063 while (n >= 8) {
3064 *dst++ = val;
3065 *dst++ = val;
3066 *dst++ = val;
3067 *dst++ = val;
3068 *dst++ = val;
3069 *dst++ = val;
3070 *dst++ = val;
3071 *dst++ = val;
3072 n -= 8;
3073 }
3074 while (n--)
3075 *dst++ = val;
3076
3077 // Trailing bits
3078 if (last)
3079 *dst = comp(val, *dst, last);
3080 }
3081 }
3082
3083
3084 /*
3085 * Unaligned 32-bit pattern xor using 32/64-bit memory accesses
3086 */
3087
3088 static void bitxor32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
3089 {
3090 unsigned long val = pat;
3091 unsigned long first, last;
3092
3093 if (!n)
3094 return;
3095
3096 #if BITS_PER_LONG == 64
3097 val |= val << 32;
3098 #endif
3099
3100 first = ~0UL >> dst_idx;
3101 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
3102
3103 if (dst_idx + n <= BITS_PER_LONG) {
3104 // Single word
3105 if (last)
3106 first &= last;
3107 *dst = xor(val, *dst, first);
3108 } else {
3109 // Multiple destination words
3110 // Leading bits
3111 if (first) {
3112 *dst = xor(val, *dst, first);
3113 dst++;
3114 n -= BITS_PER_LONG - dst_idx;
3115 }
3116
3117 // Main chunk
3118 n /= BITS_PER_LONG;
3119 while (n >= 4) {
3120 *dst++ ^= val;
3121 *dst++ ^= val;
3122 *dst++ ^= val;
3123 *dst++ ^= val;
3124 n -= 4;
3125 }
3126 while (n--)
3127 *dst++ ^= val;
3128
3129 // Trailing bits
3130 if (last)
3131 *dst = xor(val, *dst, last);
3132 }
3133 }
3134
3135 static inline void fill_one_line(int bpp, unsigned long next_plane,
3136 unsigned long *dst, int dst_idx, u32 n,
3137 u32 color)
3138 {
3139 while (1) {
3140 dst += dst_idx >> SHIFT_PER_LONG;
3141 dst_idx &= (BITS_PER_LONG - 1);
3142 bitfill32(dst, dst_idx, color & 1 ? ~0 : 0, n);
3143 if (!--bpp)
3144 break;
3145 color >>= 1;
3146 dst_idx += next_plane * 8;
3147 }
3148 }
3149
3150 static inline void xor_one_line(int bpp, unsigned long next_plane,
3151 unsigned long *dst, int dst_idx, u32 n,
3152 u32 color)
3153 {
3154 while (color) {
3155 dst += dst_idx >> SHIFT_PER_LONG;
3156 dst_idx &= (BITS_PER_LONG - 1);
3157 bitxor32(dst, dst_idx, color & 1 ? ~0 : 0, n);
3158 if (!--bpp)
3159 break;
3160 color >>= 1;
3161 dst_idx += next_plane * 8;
3162 }
3163 }
3164
3165
3166 static void amifb_fillrect(struct fb_info *info,
3167 const struct fb_fillrect *rect)
3168 {
3169 struct amifb_par *par = info->par;
3170 int dst_idx, x2, y2;
3171 unsigned long *dst;
3172 u32 width, height;
3173
3174 if (!rect->width || !rect->height)
3175 return;
3176
3177 /*
3178 * We could use hardware clipping but on many cards you get around
3179 * hardware clipping by writing to framebuffer directly.
3180 * */
3181 x2 = rect->dx + rect->width;
3182 y2 = rect->dy + rect->height;
3183 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
3184 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
3185 width = x2 - rect->dx;
3186 height = y2 - rect->dy;
3187
3188 dst = (unsigned long *)
3189 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1));
3190 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8;
3191 dst_idx += rect->dy * par->next_line * 8 + rect->dx;
3192 while (height--) {
3193 switch (rect->rop) {
3194 case ROP_COPY:
3195 fill_one_line(info->var.bits_per_pixel,
3196 par->next_plane, dst, dst_idx, width,
3197 rect->color);
3198 break;
3199
3200 case ROP_XOR:
3201 xor_one_line(info->var.bits_per_pixel, par->next_plane,
3202 dst, dst_idx, width, rect->color);
3203 break;
3204 }
3205 dst_idx += par->next_line * 8;
3206 }
3207 }
3208
3209 static inline void copy_one_line(int bpp, unsigned long next_plane,
3210 unsigned long *dst, int dst_idx,
3211 unsigned long *src, int src_idx, u32 n)
3212 {
3213 while (1) {
3214 dst += dst_idx >> SHIFT_PER_LONG;
3215 dst_idx &= (BITS_PER_LONG - 1);
3216 src += src_idx >> SHIFT_PER_LONG;
3217 src_idx &= (BITS_PER_LONG - 1);
3218 bitcpy(dst, dst_idx, src, src_idx, n);
3219 if (!--bpp)
3220 break;
3221 dst_idx += next_plane * 8;
3222 src_idx += next_plane * 8;
3223 }
3224 }
3225
3226 static inline void copy_one_line_rev(int bpp, unsigned long next_plane,
3227 unsigned long *dst, int dst_idx,
3228 unsigned long *src, int src_idx, u32 n)
3229 {
3230 while (1) {
3231 dst += dst_idx >> SHIFT_PER_LONG;
3232 dst_idx &= (BITS_PER_LONG - 1);
3233 src += src_idx >> SHIFT_PER_LONG;
3234 src_idx &= (BITS_PER_LONG - 1);
3235 bitcpy_rev(dst, dst_idx, src, src_idx, n);
3236 if (!--bpp)
3237 break;
3238 dst_idx += next_plane * 8;
3239 src_idx += next_plane * 8;
3240 }
3241 }
3242
3243
3244 static void amifb_copyarea(struct fb_info *info,
3245 const struct fb_copyarea *area)
3246 {
3247 struct amifb_par *par = info->par;
3248 int x2, y2;
3249 u32 dx, dy, sx, sy, width, height;
3250 unsigned long *dst, *src;
3251 int dst_idx, src_idx;
3252 int rev_copy = 0;
3253
3254 /* clip the destination */
3255 x2 = area->dx + area->width;
3256 y2 = area->dy + area->height;
3257 dx = area->dx > 0 ? area->dx : 0;
3258 dy = area->dy > 0 ? area->dy : 0;
3259 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
3260 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
3261 width = x2 - dx;
3262 height = y2 - dy;
3263
3264 if (area->sx + dx < area->dx || area->sy + dy < area->dy)
3265 return;
3266
3267 /* update sx,sy */
3268 sx = area->sx + (dx - area->dx);
3269 sy = area->sy + (dy - area->dy);
3270
3271 /* the source must be completely inside the virtual screen */
3272 if (sx + width > info->var.xres_virtual ||
3273 sy + height > info->var.yres_virtual)
3274 return;
3275
3276 if (dy > sy || (dy == sy && dx > sx)) {
3277 dy += height;
3278 sy += height;
3279 rev_copy = 1;
3280 }
3281 dst = (unsigned long *)
3282 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1));
3283 src = dst;
3284 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8;
3285 src_idx = dst_idx;
3286 dst_idx += dy * par->next_line * 8 + dx;
3287 src_idx += sy * par->next_line * 8 + sx;
3288 if (rev_copy) {
3289 while (height--) {
3290 dst_idx -= par->next_line * 8;
3291 src_idx -= par->next_line * 8;
3292 copy_one_line_rev(info->var.bits_per_pixel,
3293 par->next_plane, dst, dst_idx, src,
3294 src_idx, width);
3295 }
3296 } else {
3297 while (height--) {
3298 copy_one_line(info->var.bits_per_pixel,
3299 par->next_plane, dst, dst_idx, src,
3300 src_idx, width);
3301 dst_idx += par->next_line * 8;
3302 src_idx += par->next_line * 8;
3303 }
3304 }
3305 }
3306
3307
3308 static inline void expand_one_line(int bpp, unsigned long next_plane,
3309 unsigned long *dst, int dst_idx, u32 n,
3310 const u8 *data, u32 bgcolor, u32 fgcolor)
3311 {
3312 const unsigned long *src;
3313 int src_idx;
3314
3315 while (1) {
3316 dst += dst_idx >> SHIFT_PER_LONG;
3317 dst_idx &= (BITS_PER_LONG - 1);
3318 if ((bgcolor ^ fgcolor) & 1) {
3319 src = (unsigned long *)
3320 ((unsigned long)data & ~(BYTES_PER_LONG - 1));
3321 src_idx = ((unsigned long)data & (BYTES_PER_LONG - 1)) * 8;
3322 if (fgcolor & 1)
3323 bitcpy(dst, dst_idx, src, src_idx, n);
3324 else
3325 bitcpy_not(dst, dst_idx, src, src_idx, n);
3326 /* set or clear */
3327 } else
3328 bitfill32(dst, dst_idx, fgcolor & 1 ? ~0 : 0, n);
3329 if (!--bpp)
3330 break;
3331 bgcolor >>= 1;
3332 fgcolor >>= 1;
3333 dst_idx += next_plane * 8;
3334 }
3335 }
3336
3337
3338 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
3339 {
3340 struct amifb_par *par = info->par;
3341 int x2, y2;
3342 unsigned long *dst;
3343 int dst_idx;
3344 const char *src;
3345 u32 dx, dy, width, height, pitch;
3346
3347 /*
3348 * We could use hardware clipping but on many cards you get around
3349 * hardware clipping by writing to framebuffer directly like we are
3350 * doing here.
3351 */
3352 x2 = image->dx + image->width;
3353 y2 = image->dy + image->height;
3354 dx = image->dx;
3355 dy = image->dy;
3356 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
3357 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
3358 width = x2 - dx;
3359 height = y2 - dy;
3360
3361 if (image->depth == 1) {
3362 dst = (unsigned long *)
3363 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1));
3364 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8;
3365 dst_idx += dy * par->next_line * 8 + dx;
3366 src = image->data;
3367 pitch = (image->width + 7) / 8;
3368 while (height--) {
3369 expand_one_line(info->var.bits_per_pixel,
3370 par->next_plane, dst, dst_idx, width,
3371 src, image->bg_color,
3372 image->fg_color);
3373 dst_idx += par->next_line * 8;
3374 src += pitch;
3375 }
3376 } else {
3377 c2p_planar(info->screen_base, image->data, dx, dy, width,
3378 height, par->next_line, par->next_plane,
3379 image->width, info->var.bits_per_pixel);
3380 }
3381 }
3382
3383
3384 /*
3385 * Amiga Frame Buffer Specific ioctls
3386 */
3387
3388 static int amifb_ioctl(struct fb_info *info,
3389 unsigned int cmd, unsigned long arg)
3390 {
3391 union {
3392 struct fb_fix_cursorinfo fix;
3393 struct fb_var_cursorinfo var;
3394 struct fb_cursorstate state;
3395 } crsr;
3396 void __user *argp = (void __user *)arg;
3397 int i;
3398
3399 switch (cmd) {
3400 case FBIOGET_FCURSORINFO:
3401 i = ami_get_fix_cursorinfo(&crsr.fix, info->par);
3402 if (i)
3403 return i;
3404 return copy_to_user(argp, &crsr.fix,
3405 sizeof(crsr.fix)) ? -EFAULT : 0;
3406
3407 case FBIOGET_VCURSORINFO:
3408 i = ami_get_var_cursorinfo(&crsr.var,
3409 ((struct fb_var_cursorinfo __user *)arg)->data,
3410 info->par);
3411 if (i)
3412 return i;
3413 return copy_to_user(argp, &crsr.var,
3414 sizeof(crsr.var)) ? -EFAULT : 0;
3415
3416 case FBIOPUT_VCURSORINFO:
3417 if (copy_from_user(&crsr.var, argp, sizeof(crsr.var)))
3418 return -EFAULT;
3419 return ami_set_var_cursorinfo(&crsr.var,
3420 ((struct fb_var_cursorinfo __user *)arg)->data,
3421 info->par);
3422
3423 case FBIOGET_CURSORSTATE:
3424 i = ami_get_cursorstate(&crsr.state, info->par);
3425 if (i)
3426 return i;
3427 return copy_to_user(argp, &crsr.state,
3428 sizeof(crsr.state)) ? -EFAULT : 0;
3429
3430 case FBIOPUT_CURSORSTATE:
3431 if (copy_from_user(&crsr.state, argp, sizeof(crsr.state)))
3432 return -EFAULT;
3433 return ami_set_cursorstate(&crsr.state, info->par);
3434 }
3435 return -EINVAL;
3436 }
3437
3438
3439 /*
3440 * Flash the cursor (called by VBlank interrupt)
3441 */
3442
3443 static int flash_cursor(void)
3444 {
3445 static int cursorcount = 1;
3446
3447 if (cursormode == FB_CURSOR_FLASH) {
3448 if (!--cursorcount) {
3449 cursorstate = -cursorstate;
3450 cursorcount = cursorrate;
3451 if (!is_blanked)
3452 return 1;
3453 }
3454 }
3455 return 0;
3456 }
3457
3458 /*
3459 * VBlank Display Interrupt
3460 */
3461
3462 static irqreturn_t amifb_interrupt(int irq, void *dev_id)
3463 {
3464 struct amifb_par *par = dev_id;
3465
3466 if (do_vmode_pan || do_vmode_full)
3467 ami_update_display(par);
3468
3469 if (do_vmode_full)
3470 ami_init_display(par);
3471
3472 if (do_vmode_pan) {
3473 flash_cursor();
3474 ami_rebuild_copper(par);
3475 do_cursor = do_vmode_pan = 0;
3476 } else if (do_cursor) {
3477 flash_cursor();
3478 ami_set_sprite(par);
3479 do_cursor = 0;
3480 } else {
3481 if (flash_cursor())
3482 ami_set_sprite(par);
3483 }
3484
3485 if (do_blank) {
3486 ami_do_blank(par);
3487 do_blank = 0;
3488 }
3489
3490 if (do_vmode_full) {
3491 ami_reinit_copper(par);
3492 do_vmode_full = 0;
3493 }
3494 return IRQ_HANDLED;
3495 }
3496
3497
3498 static struct fb_ops amifb_ops = {
3499 .owner = THIS_MODULE,
3500 .fb_check_var = amifb_check_var,
3501 .fb_set_par = amifb_set_par,
3502 .fb_setcolreg = amifb_setcolreg,
3503 .fb_blank = amifb_blank,
3504 .fb_pan_display = amifb_pan_display,
3505 .fb_fillrect = amifb_fillrect,
3506 .fb_copyarea = amifb_copyarea,
3507 .fb_imageblit = amifb_imageblit,
3508 .fb_ioctl = amifb_ioctl,
3509 };
3510
3511
3512 /*
3513 * Allocate, Clear and Align a Block of Chip Memory
3514 */
3515
3516 static void *aligned_chipptr;
3517
3518 static inline u_long __init chipalloc(u_long size)
3519 {
3520 aligned_chipptr = amiga_chip_alloc(size, "amifb [RAM]");
3521 if (!aligned_chipptr) {
3522 pr_err("amifb: No Chip RAM for frame buffer");
3523 return 0;
3524 }
3525 memset(aligned_chipptr, 0, size);
3526 return (u_long)aligned_chipptr;
3527 }
3528
3529 static inline void chipfree(void)
3530 {
3531 if (aligned_chipptr)
3532 amiga_chip_free(aligned_chipptr);
3533 }
3534
3535
3536 /*
3537 * Initialisation
3538 */
3539
3540 static int __init amifb_probe(struct platform_device *pdev)
3541 {
3542 struct fb_info *info;
3543 int tag, i, err = 0;
3544 u_long chipptr;
3545 u_int defmode;
3546
3547 #ifndef MODULE
3548 char *option = NULL;
3549
3550 if (fb_get_options("amifb", &option)) {
3551 amifb_video_off();
3552 return -ENODEV;
3553 }
3554 amifb_setup(option);
3555 #endif
3556 custom.dmacon = DMAF_ALL | DMAF_MASTER;
3557
3558 info = framebuffer_alloc(sizeof(struct amifb_par), &pdev->dev);
3559 if (!info) {
3560 dev_err(&pdev->dev, "framebuffer_alloc failed\n");
3561 return -ENOMEM;
3562 }
3563
3564 strcpy(info->fix.id, "Amiga ");
3565 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
3566 info->fix.accel = FB_ACCEL_AMIGABLITT;
3567
3568 switch (amiga_chipset) {
3569 #ifdef CONFIG_FB_AMIGA_OCS
3570 case CS_OCS:
3571 strcat(info->fix.id, "OCS");
3572 default_chipset:
3573 chipset = TAG_OCS;
3574 maxdepth[TAG_SHRES] = 0; /* OCS means no SHRES */
3575 maxdepth[TAG_HIRES] = 4;
3576 maxdepth[TAG_LORES] = 6;
3577 maxfmode = TAG_FMODE_1;
3578 defmode = amiga_vblank == 50 ? DEFMODE_PAL : DEFMODE_NTSC;
3579 info->fix.smem_len = VIDEOMEMSIZE_OCS;
3580 break;
3581 #endif /* CONFIG_FB_AMIGA_OCS */
3582
3583 #ifdef CONFIG_FB_AMIGA_ECS
3584 case CS_ECS:
3585 strcat(info->fix.id, "ECS");
3586 chipset = TAG_ECS;
3587 maxdepth[TAG_SHRES] = 2;
3588 maxdepth[TAG_HIRES] = 4;
3589 maxdepth[TAG_LORES] = 6;
3590 maxfmode = TAG_FMODE_1;
3591 if (AMIGAHW_PRESENT(AMBER_FF))
3592 defmode = amiga_vblank == 50 ? DEFMODE_AMBER_PAL
3593 : DEFMODE_AMBER_NTSC;
3594 else
3595 defmode = amiga_vblank == 50 ? DEFMODE_PAL
3596 : DEFMODE_NTSC;
3597 if (amiga_chip_avail() - CHIPRAM_SAFETY_LIMIT >
3598 VIDEOMEMSIZE_ECS_2M)
3599 info->fix.smem_len = VIDEOMEMSIZE_ECS_2M;
3600 else
3601 info->fix.smem_len = VIDEOMEMSIZE_ECS_1M;
3602 break;
3603 #endif /* CONFIG_FB_AMIGA_ECS */
3604
3605 #ifdef CONFIG_FB_AMIGA_AGA
3606 case CS_AGA:
3607 strcat(info->fix.id, "AGA");
3608 chipset = TAG_AGA;
3609 maxdepth[TAG_SHRES] = 8;
3610 maxdepth[TAG_HIRES] = 8;
3611 maxdepth[TAG_LORES] = 8;
3612 maxfmode = TAG_FMODE_4;
3613 defmode = DEFMODE_AGA;
3614 if (amiga_chip_avail() - CHIPRAM_SAFETY_LIMIT >
3615 VIDEOMEMSIZE_AGA_2M)
3616 info->fix.smem_len = VIDEOMEMSIZE_AGA_2M;
3617 else
3618 info->fix.smem_len = VIDEOMEMSIZE_AGA_1M;
3619 break;
3620 #endif /* CONFIG_FB_AMIGA_AGA */
3621
3622 default:
3623 #ifdef CONFIG_FB_AMIGA_OCS
3624 printk("Unknown graphics chipset, defaulting to OCS\n");
3625 strcat(info->fix.id, "Unknown");
3626 goto default_chipset;
3627 #else /* CONFIG_FB_AMIGA_OCS */
3628 err = -ENODEV;
3629 goto release;
3630 #endif /* CONFIG_FB_AMIGA_OCS */
3631 break;
3632 }
3633
3634 /*
3635 * Calculate the Pixel Clock Values for this Machine
3636 */
3637
3638 {
3639 u_long tmp = DIVUL(200000000000ULL, amiga_eclock);
3640
3641 pixclock[TAG_SHRES] = (tmp + 4) / 8; /* SHRES: 35 ns / 28 MHz */
3642 pixclock[TAG_HIRES] = (tmp + 2) / 4; /* HIRES: 70 ns / 14 MHz */
3643 pixclock[TAG_LORES] = (tmp + 1) / 2; /* LORES: 140 ns / 7 MHz */
3644 }
3645
3646 /*
3647 * Replace the Tag Values with the Real Pixel Clock Values
3648 */
3649
3650 for (i = 0; i < NUM_TOTAL_MODES; i++) {
3651 struct fb_videomode *mode = &ami_modedb[i];
3652 tag = mode->pixclock;
3653 if (tag == TAG_SHRES || tag == TAG_HIRES || tag == TAG_LORES) {
3654 mode->pixclock = pixclock[tag];
3655 }
3656 }
3657
3658 if (amifb_hfmin) {
3659 info->monspecs.hfmin = amifb_hfmin;
3660 info->monspecs.hfmax = amifb_hfmax;
3661 info->monspecs.vfmin = amifb_vfmin;
3662 info->monspecs.vfmax = amifb_vfmax;
3663 } else {
3664 /*
3665 * These are for a typical Amiga monitor (e.g. A1960)
3666 */
3667 info->monspecs.hfmin = 15000;
3668 info->monspecs.hfmax = 38000;
3669 info->monspecs.vfmin = 49;
3670 info->monspecs.vfmax = 90;
3671 }
3672
3673 info->fbops = &amifb_ops;
3674 info->flags = FBINFO_DEFAULT;
3675 info->device = &pdev->dev;
3676
3677 if (!fb_find_mode(&info->var, info, mode_option, ami_modedb,
3678 NUM_TOTAL_MODES, &ami_modedb[defmode], 4)) {
3679 err = -EINVAL;
3680 goto release;
3681 }
3682
3683 fb_videomode_to_modelist(ami_modedb, NUM_TOTAL_MODES,
3684 &info->modelist);
3685
3686 round_down_bpp = 0;
3687 chipptr = chipalloc(info->fix.smem_len + SPRITEMEMSIZE +
3688 DUMMYSPRITEMEMSIZE + COPINITSIZE +
3689 4 * COPLISTSIZE);
3690 if (!chipptr) {
3691 err = -ENOMEM;
3692 goto release;
3693 }
3694
3695 assignchunk(videomemory, u_long, chipptr, info->fix.smem_len);
3696 assignchunk(spritememory, u_long, chipptr, SPRITEMEMSIZE);
3697 assignchunk(dummysprite, u_short *, chipptr, DUMMYSPRITEMEMSIZE);
3698 assignchunk(copdisplay.init, copins *, chipptr, COPINITSIZE);
3699 assignchunk(copdisplay.list[0][0], copins *, chipptr, COPLISTSIZE);
3700 assignchunk(copdisplay.list[0][1], copins *, chipptr, COPLISTSIZE);
3701 assignchunk(copdisplay.list[1][0], copins *, chipptr, COPLISTSIZE);
3702 assignchunk(copdisplay.list[1][1], copins *, chipptr, COPLISTSIZE);
3703
3704 /*
3705 * access the videomem with writethrough cache
3706 */
3707 info->fix.smem_start = (u_long)ZTWO_PADDR(videomemory);
3708 videomemory = (u_long)ioremap_writethrough(info->fix.smem_start,
3709 info->fix.smem_len);
3710 if (!videomemory) {
3711 dev_warn(&pdev->dev,
3712 "Unable to map videomem cached writethrough\n");
3713 info->screen_base = (char *)ZTWO_VADDR(info->fix.smem_start);
3714 } else
3715 info->screen_base = (char *)videomemory;
3716
3717 memset(dummysprite, 0, DUMMYSPRITEMEMSIZE);
3718
3719 /*
3720 * Make sure the Copper has something to do
3721 */
3722 ami_init_copper();
3723
3724 /*
3725 * Enable Display DMA
3726 */
3727 custom.dmacon = DMAF_SETCLR | DMAF_MASTER | DMAF_RASTER | DMAF_COPPER |
3728 DMAF_BLITTER | DMAF_SPRITE;
3729
3730 err = request_irq(IRQ_AMIGA_COPPER, amifb_interrupt, 0,
3731 "fb vertb handler", info->par);
3732 if (err)
3733 goto disable_dma;
3734
3735 err = fb_alloc_cmap(&info->cmap, 1 << info->var.bits_per_pixel, 0);
3736 if (err)
3737 goto free_irq;
3738
3739 dev_set_drvdata(&pdev->dev, info);
3740
3741 err = register_framebuffer(info);
3742 if (err)
3743 goto unset_drvdata;
3744
3745 printk("fb%d: %s frame buffer device, using %dK of video memory\n",
3746 info->node, info->fix.id, info->fix.smem_len>>10);
3747
3748 return 0;
3749
3750 unset_drvdata:
3751 dev_set_drvdata(&pdev->dev, NULL);
3752 fb_dealloc_cmap(&info->cmap);
3753 free_irq:
3754 free_irq(IRQ_AMIGA_COPPER, info->par);
3755 disable_dma:
3756 custom.dmacon = DMAF_ALL | DMAF_MASTER;
3757 if (videomemory)
3758 iounmap((void *)videomemory);
3759 chipfree();
3760 release:
3761 framebuffer_release(info);
3762 return err;
3763 }
3764
3765
3766 static int __exit amifb_remove(struct platform_device *pdev)
3767 {
3768 struct fb_info *info = dev_get_drvdata(&pdev->dev);
3769
3770 unregister_framebuffer(info);
3771 dev_set_drvdata(&pdev->dev, NULL);
3772 fb_dealloc_cmap(&info->cmap);
3773 free_irq(IRQ_AMIGA_COPPER, info->par);
3774 custom.dmacon = DMAF_ALL | DMAF_MASTER;
3775 if (videomemory)
3776 iounmap((void *)videomemory);
3777 chipfree();
3778 framebuffer_release(info);
3779 amifb_video_off();
3780 return 0;
3781 }
3782
3783 static struct platform_driver amifb_driver = {
3784 .remove = __exit_p(amifb_remove),
3785 .driver = {
3786 .name = "amiga-video",
3787 .owner = THIS_MODULE,
3788 },
3789 };
3790
3791 module_platform_driver_probe(amifb_driver, amifb_probe);
3792
3793 MODULE_LICENSE("GPL");
3794 MODULE_ALIAS("platform:amiga-video");
Linus' kernel tree