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Merge tag 'trace-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
[linux/fpc-iii.git] / drivers / video / fbdev / amifb.c
blob226682550b4b9d86747c8b99bd680fae4abb339f
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 /*
579 * FIXME: Use C variants of the code marked with #ifdef __mc68000__
580 * in the driver. It shouldn't negatively affect the performance and
581 * is required for APUS support (once it is re-added to the kernel).
582 * Needs to be tested on the hardware though..
583 */
584 /* if x1 is not a constant, this macro won't make real sense :-) */
585 #ifdef __mc68000__
586 #define DIVUL(x1, x2) ({int res; asm("divul %1,%2,%3": "=d" (res): \
587 "d" (x2), "d" ((long)((x1) / 0x100000000ULL)), "0" ((long)(x1))); res;})
588 #else
589 /* We know a bit about the numbers, so we can do it this way */
590 #define DIVUL(x1, x2) ((((long)((unsigned long long)x1 >> 8) / x2) << 8) + \
591 ((((long)((unsigned long long)x1 >> 8) % x2) << 8) / x2))
592 #endif
593
594 #define highw(x) ((u_long)(x)>>16 & 0xffff)
595 #define loww(x) ((u_long)(x) & 0xffff)
596
597 #define custom amiga_custom
598
599 #define VBlankOn() custom.intena = IF_SETCLR|IF_COPER
600 #define VBlankOff() custom.intena = IF_COPER
601
602
603 /*
604 * Chip RAM we reserve for the Frame Buffer
605 *
606 * This defines the Maximum Virtual Screen Size
607 * (Setable per kernel options?)
608 */
609
610 #define VIDEOMEMSIZE_AGA_2M (1310720) /* AGA (2MB) : max 1280*1024*256 */
611 #define VIDEOMEMSIZE_AGA_1M (786432) /* AGA (1MB) : max 1024*768*256 */
612 #define VIDEOMEMSIZE_ECS_2M (655360) /* ECS (2MB) : max 1280*1024*16 */
613 #define VIDEOMEMSIZE_ECS_1M (393216) /* ECS (1MB) : max 1024*768*16 */
614 #define VIDEOMEMSIZE_OCS (262144) /* OCS : max ca. 800*600*16 */
615
616 #define SPRITEMEMSIZE (64 * 64 / 4) /* max 64*64*4 */
617 #define DUMMYSPRITEMEMSIZE (8)
618 static u_long spritememory;
619
620 #define CHIPRAM_SAFETY_LIMIT (16384)
621
622 static u_long videomemory;
623
624 /*
625 * This is the earliest allowed start of fetching display data.
626 * Only if you really want no hardware cursor and audio,
627 * set this to 128, but let it better at 192
628 */
629
630 static u_long min_fstrt = 192;
631
632 #define assignchunk(name, type, ptr, size) \
633 { \
634 (name) = (type)(ptr); \
635 ptr += size; \
636 }
637
638
639 /*
640 * Copper Instructions
641 */
642
643 #define CMOVE(val, reg) (CUSTOM_OFS(reg) << 16 | (val))
644 #define CMOVE2(val, reg) ((CUSTOM_OFS(reg) + 2) << 16 | (val))
645 #define CWAIT(x, y) (((y) & 0x1fe) << 23 | ((x) & 0x7f0) << 13 | 0x0001fffe)
646 #define CEND (0xfffffffe)
647
648
649 typedef union {
650 u_long l;
651 u_short w[2];
652 } copins;
653
654 static struct copdisplay {
655 copins *init;
656 copins *wait;
657 copins *list[2][2];
658 copins *rebuild[2];
659 } copdisplay;
660
661 static u_short currentcop = 0;
662
663 /*
664 * Hardware Cursor API Definitions
665 * These used to be in linux/fb.h, but were preliminary and used by
666 * amifb only anyway
667 */
668
669 #define FBIOGET_FCURSORINFO 0x4607
670 #define FBIOGET_VCURSORINFO 0x4608
671 #define FBIOPUT_VCURSORINFO 0x4609
672 #define FBIOGET_CURSORSTATE 0x460A
673 #define FBIOPUT_CURSORSTATE 0x460B
674
675
676 struct fb_fix_cursorinfo {
677 __u16 crsr_width; /* width and height of the cursor in */
678 __u16 crsr_height; /* pixels (zero if no cursor) */
679 __u16 crsr_xsize; /* cursor size in display pixels */
680 __u16 crsr_ysize;
681 __u16 crsr_color1; /* colormap entry for cursor color1 */
682 __u16 crsr_color2; /* colormap entry for cursor color2 */
683 };
684
685 struct fb_var_cursorinfo {
686 __u16 width;
687 __u16 height;
688 __u16 xspot;
689 __u16 yspot;
690 __u8 data[1]; /* field with [height][width] */
691 };
692
693 struct fb_cursorstate {
694 __s16 xoffset;
695 __s16 yoffset;
696 __u16 mode;
697 };
698
699 #define FB_CURSOR_OFF 0
700 #define FB_CURSOR_ON 1
701 #define FB_CURSOR_FLASH 2
702
703
704 /*
705 * Hardware Cursor
706 */
707
708 static int cursorrate = 20; /* Number of frames/flash toggle */
709 static u_short cursorstate = -1;
710 static u_short cursormode = FB_CURSOR_OFF;
711
712 static u_short *lofsprite, *shfsprite, *dummysprite;
713
714 /*
715 * Current Video Mode
716 */
717
718 struct amifb_par {
719
720 /* General Values */
721
722 int xres; /* vmode */
723 int yres; /* vmode */
724 int vxres; /* vmode */
725 int vyres; /* vmode */
726 int xoffset; /* vmode */
727 int yoffset; /* vmode */
728 u_short bpp; /* vmode */
729 u_short clk_shift; /* vmode */
730 u_short line_shift; /* vmode */
731 int vmode; /* vmode */
732 u_short diwstrt_h; /* vmode */
733 u_short diwstop_h; /* vmode */
734 u_short diwstrt_v; /* vmode */
735 u_short diwstop_v; /* vmode */
736 u_long next_line; /* modulo for next line */
737 u_long next_plane; /* modulo for next plane */
738
739 /* Cursor Values */
740
741 struct {
742 short crsr_x; /* movecursor */
743 short crsr_y; /* movecursor */
744 short spot_x;
745 short spot_y;
746 u_short height;
747 u_short width;
748 u_short fmode;
749 } crsr;
750
751 /* OCS Hardware Registers */
752
753 u_long bplpt0; /* vmode, pan (Note: physical address) */
754 u_long bplpt0wrap; /* vmode, pan (Note: physical address) */
755 u_short ddfstrt;
756 u_short ddfstop;
757 u_short bpl1mod;
758 u_short bpl2mod;
759 u_short bplcon0; /* vmode */
760 u_short bplcon1; /* vmode */
761 u_short htotal; /* vmode */
762 u_short vtotal; /* vmode */
763
764 /* Additional ECS Hardware Registers */
765
766 u_short bplcon3; /* vmode */
767 u_short beamcon0; /* vmode */
768 u_short hsstrt; /* vmode */
769 u_short hsstop; /* vmode */
770 u_short hbstrt; /* vmode */
771 u_short hbstop; /* vmode */
772 u_short vsstrt; /* vmode */
773 u_short vsstop; /* vmode */
774 u_short vbstrt; /* vmode */
775 u_short vbstop; /* vmode */
776 u_short hcenter; /* vmode */
777
778 /* Additional AGA Hardware Registers */
779
780 u_short fmode; /* vmode */
781 };
782
783
784 /*
785 * Saved color entry 0 so we can restore it when unblanking
786 */
787
788 static u_char red0, green0, blue0;
789
790
791 #if defined(CONFIG_FB_AMIGA_ECS)
792 static u_short ecs_palette[32];
793 #endif
794
795
796 /*
797 * Latches for Display Changes during VBlank
798 */
799
800 static u_short do_vmode_full = 0; /* Change the Video Mode */
801 static u_short do_vmode_pan = 0; /* Update the Video Mode */
802 static short do_blank = 0; /* (Un)Blank the Screen (±1) */
803 static u_short do_cursor = 0; /* Move the Cursor */
804
805
806 /*
807 * Various Flags
808 */
809
810 static u_short is_blanked = 0; /* Screen is Blanked */
811 static u_short is_lace = 0; /* Screen is laced */
812
813 /*
814 * Predefined Video Modes
815 *
816 */
817
818 static struct fb_videomode ami_modedb[] __initdata = {
819
820 /*
821 * AmigaOS Video Modes
822 *
823 * If you change these, make sure to update DEFMODE_* as well!
824 */
825
826 {
827 /* 640x200, 15 kHz, 60 Hz (NTSC) */
828 "ntsc", 60, 640, 200, TAG_HIRES, 106, 86, 44, 16, 76, 2,
829 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
830 }, {
831 /* 640x400, 15 kHz, 60 Hz interlaced (NTSC) */
832 "ntsc-lace", 60, 640, 400, TAG_HIRES, 106, 86, 88, 33, 76, 4,
833 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
834 }, {
835 /* 640x256, 15 kHz, 50 Hz (PAL) */
836 "pal", 50, 640, 256, TAG_HIRES, 106, 86, 40, 14, 76, 2,
837 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
838 }, {
839 /* 640x512, 15 kHz, 50 Hz interlaced (PAL) */
840 "pal-lace", 50, 640, 512, TAG_HIRES, 106, 86, 80, 29, 76, 4,
841 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
842 }, {
843 /* 640x480, 29 kHz, 57 Hz */
844 "multiscan", 57, 640, 480, TAG_SHRES, 96, 112, 29, 8, 72, 8,
845 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
846 }, {
847 /* 640x960, 29 kHz, 57 Hz interlaced */
848 "multiscan-lace", 57, 640, 960, TAG_SHRES, 96, 112, 58, 16, 72,
849 16,
850 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
851 }, {
852 /* 640x200, 15 kHz, 72 Hz */
853 "euro36", 72, 640, 200, TAG_HIRES, 92, 124, 6, 6, 52, 5,
854 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
855 }, {
856 /* 640x400, 15 kHz, 72 Hz interlaced */
857 "euro36-lace", 72, 640, 400, TAG_HIRES, 92, 124, 12, 12, 52,
858 10,
859 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
860 }, {
861 /* 640x400, 29 kHz, 68 Hz */
862 "euro72", 68, 640, 400, TAG_SHRES, 164, 92, 9, 9, 80, 8,
863 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
864 }, {
865 /* 640x800, 29 kHz, 68 Hz interlaced */
866 "euro72-lace", 68, 640, 800, TAG_SHRES, 164, 92, 18, 18, 80,
867 16,
868 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
869 }, {
870 /* 800x300, 23 kHz, 70 Hz */
871 "super72", 70, 800, 300, TAG_SHRES, 212, 140, 10, 11, 80, 7,
872 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
873 }, {
874 /* 800x600, 23 kHz, 70 Hz interlaced */
875 "super72-lace", 70, 800, 600, TAG_SHRES, 212, 140, 20, 22, 80,
876 14,
877 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
878 }, {
879 /* 640x200, 27 kHz, 57 Hz doublescan */
880 "dblntsc", 57, 640, 200, TAG_SHRES, 196, 124, 18, 17, 80, 4,
881 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
882 }, {
883 /* 640x400, 27 kHz, 57 Hz */
884 "dblntsc-ff", 57, 640, 400, TAG_SHRES, 196, 124, 36, 35, 80, 7,
885 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
886 }, {
887 /* 640x800, 27 kHz, 57 Hz interlaced */
888 "dblntsc-lace", 57, 640, 800, TAG_SHRES, 196, 124, 72, 70, 80,
889 14,
890 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
891 }, {
892 /* 640x256, 27 kHz, 47 Hz doublescan */
893 "dblpal", 47, 640, 256, TAG_SHRES, 196, 124, 14, 13, 80, 4,
894 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
895 }, {
896 /* 640x512, 27 kHz, 47 Hz */
897 "dblpal-ff", 47, 640, 512, TAG_SHRES, 196, 124, 28, 27, 80, 7,
898 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
899 }, {
900 /* 640x1024, 27 kHz, 47 Hz interlaced */
901 "dblpal-lace", 47, 640, 1024, TAG_SHRES, 196, 124, 56, 54, 80,
902 14,
903 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
904 },
905
906 /*
907 * VGA Video Modes
908 */
909
910 {
911 /* 640x480, 31 kHz, 60 Hz (VGA) */
912 "vga", 60, 640, 480, TAG_SHRES, 64, 96, 30, 9, 112, 2,
913 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
914 }, {
915 /* 640x400, 31 kHz, 70 Hz (VGA) */
916 "vga70", 70, 640, 400, TAG_SHRES, 64, 96, 35, 12, 112, 2,
917 FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT,
918 FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
919 },
920
921 #if 0
922
923 /*
924 * A2024 video modes
925 * These modes don't work yet because there's no A2024 driver.
926 */
927
928 {
929 /* 1024x800, 10 Hz */
930 "a2024-10", 10, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
931 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
932 }, {
933 /* 1024x800, 15 Hz */
934 "a2024-15", 15, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
935 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
936 }
937 #endif
938 };
939
940 #define NUM_TOTAL_MODES ARRAY_SIZE(ami_modedb)
941
942 static char *mode_option __initdata = NULL;
943 static int round_down_bpp = 1; /* for mode probing */
944
945 /*
946 * Some default modes
947 */
948
949
950 #define DEFMODE_PAL 2 /* "pal" for PAL OCS/ECS */
951 #define DEFMODE_NTSC 0 /* "ntsc" for NTSC OCS/ECS */
952 #define DEFMODE_AMBER_PAL 3 /* "pal-lace" for flicker fixed PAL (A3000) */
953 #define DEFMODE_AMBER_NTSC 1 /* "ntsc-lace" for flicker fixed NTSC (A3000) */
954 #define DEFMODE_AGA 19 /* "vga70" for AGA */
955
956
957 static int amifb_ilbm = 0; /* interleaved or normal bitplanes */
958
959 static u32 amifb_hfmin __initdata; /* monitor hfreq lower limit (Hz) */
960 static u32 amifb_hfmax __initdata; /* monitor hfreq upper limit (Hz) */
961 static u16 amifb_vfmin __initdata; /* monitor vfreq lower limit (Hz) */
962 static u16 amifb_vfmax __initdata; /* monitor vfreq upper limit (Hz) */
963
964
965 /*
966 * Macros for the conversion from real world values to hardware register
967 * values
968 *
969 * This helps us to keep our attention on the real stuff...
970 *
971 * Hardware limits for AGA:
972 *
973 * parameter min max step
974 * --------- --- ---- ----
975 * diwstrt_h 0 2047 1
976 * diwstrt_v 0 2047 1
977 * diwstop_h 0 4095 1
978 * diwstop_v 0 4095 1
979 *
980 * ddfstrt 0 2032 16
981 * ddfstop 0 2032 16
982 *
983 * htotal 8 2048 8
984 * hsstrt 0 2040 8
985 * hsstop 0 2040 8
986 * vtotal 1 4096 1
987 * vsstrt 0 4095 1
988 * vsstop 0 4095 1
989 * hcenter 0 2040 8
990 *
991 * hbstrt 0 2047 1
992 * hbstop 0 2047 1
993 * vbstrt 0 4095 1
994 * vbstop 0 4095 1
995 *
996 * Horizontal values are in 35 ns (SHRES) pixels
997 * Vertical values are in half scanlines
998 */
999
1000 /* bplcon1 (smooth scrolling) */
1001
1002 #define hscroll2hw(hscroll) \
1003 (((hscroll) << 12 & 0x3000) | ((hscroll) << 8 & 0xc300) | \
1004 ((hscroll) << 4 & 0x0c00) | ((hscroll) << 2 & 0x00f0) | \
1005 ((hscroll)>>2 & 0x000f))
1006
1007 /* diwstrt/diwstop/diwhigh (visible display window) */
1008
1009 #define diwstrt2hw(diwstrt_h, diwstrt_v) \
1010 (((diwstrt_v) << 7 & 0xff00) | ((diwstrt_h)>>2 & 0x00ff))
1011 #define diwstop2hw(diwstop_h, diwstop_v) \
1012 (((diwstop_v) << 7 & 0xff00) | ((diwstop_h)>>2 & 0x00ff))
1013 #define diwhigh2hw(diwstrt_h, diwstrt_v, diwstop_h, diwstop_v) \
1014 (((diwstop_h) << 3 & 0x2000) | ((diwstop_h) << 11 & 0x1800) | \
1015 ((diwstop_v)>>1 & 0x0700) | ((diwstrt_h)>>5 & 0x0020) | \
1016 ((diwstrt_h) << 3 & 0x0018) | ((diwstrt_v)>>9 & 0x0007))
1017
1018 /* ddfstrt/ddfstop (display DMA) */
1019
1020 #define ddfstrt2hw(ddfstrt) div8(ddfstrt)
1021 #define ddfstop2hw(ddfstop) div8(ddfstop)
1022
1023 /* hsstrt/hsstop/htotal/vsstrt/vsstop/vtotal/hcenter (sync timings) */
1024
1025 #define hsstrt2hw(hsstrt) (div8(hsstrt))
1026 #define hsstop2hw(hsstop) (div8(hsstop))
1027 #define htotal2hw(htotal) (div8(htotal) - 1)
1028 #define vsstrt2hw(vsstrt) (div2(vsstrt))
1029 #define vsstop2hw(vsstop) (div2(vsstop))
1030 #define vtotal2hw(vtotal) (div2(vtotal) - 1)
1031 #define hcenter2hw(htotal) (div8(htotal))
1032
1033 /* hbstrt/hbstop/vbstrt/vbstop (blanking timings) */
1034
1035 #define hbstrt2hw(hbstrt) (((hbstrt) << 8 & 0x0700) | ((hbstrt)>>3 & 0x00ff))
1036 #define hbstop2hw(hbstop) (((hbstop) << 8 & 0x0700) | ((hbstop)>>3 & 0x00ff))
1037 #define vbstrt2hw(vbstrt) (div2(vbstrt))
1038 #define vbstop2hw(vbstop) (div2(vbstop))
1039
1040 /* colour */
1041
1042 #define rgb2hw8_high(red, green, blue) \
1043 (((red & 0xf0) << 4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1044 #define rgb2hw8_low(red, green, blue) \
1045 (((red & 0x0f) << 8) | ((green & 0x0f) << 4) | (blue & 0x0f))
1046 #define rgb2hw4(red, green, blue) \
1047 (((red & 0xf0) << 4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1048 #define rgb2hw2(red, green, blue) \
1049 (((red & 0xc0) << 4) | (green & 0xc0) | ((blue & 0xc0)>>4))
1050
1051 /* sprpos/sprctl (sprite positioning) */
1052
1053 #define spr2hw_pos(start_v, start_h) \
1054 (((start_v) << 7 & 0xff00) | ((start_h)>>3 & 0x00ff))
1055 #define spr2hw_ctl(start_v, start_h, stop_v) \
1056 (((stop_v) << 7 & 0xff00) | ((start_v)>>4 & 0x0040) | \
1057 ((stop_v)>>5 & 0x0020) | ((start_h) << 3 & 0x0018) | \
1058 ((start_v)>>7 & 0x0004) | ((stop_v)>>8 & 0x0002) | \
1059 ((start_h)>>2 & 0x0001))
1060
1061 /* get current vertical position of beam */
1062 #define get_vbpos() ((u_short)((*(u_long volatile *)&custom.vposr >> 7) & 0xffe))
1063
1064 /*
1065 * Copper Initialisation List
1066 */
1067
1068 #define COPINITSIZE (sizeof(copins) * 40)
1069
1070 enum {
1071 cip_bplcon0
1072 };
1073
1074 /*
1075 * Long Frame/Short Frame Copper List
1076 * Don't change the order, build_copper()/rebuild_copper() rely on this
1077 */
1078
1079 #define COPLISTSIZE (sizeof(copins) * 64)
1080
1081 enum {
1082 cop_wait, cop_bplcon0,
1083 cop_spr0ptrh, cop_spr0ptrl,
1084 cop_diwstrt, cop_diwstop,
1085 cop_diwhigh,
1086 };
1087
1088 /*
1089 * Pixel modes for Bitplanes and Sprites
1090 */
1091
1092 static u_short bplpixmode[3] = {
1093 BPC0_SHRES, /* 35 ns */
1094 BPC0_HIRES, /* 70 ns */
1095 0 /* 140 ns */
1096 };
1097
1098 static u_short sprpixmode[3] = {
1099 BPC3_SPRES1 | BPC3_SPRES0, /* 35 ns */
1100 BPC3_SPRES1, /* 70 ns */
1101 BPC3_SPRES0 /* 140 ns */
1102 };
1103
1104 /*
1105 * Fetch modes for Bitplanes and Sprites
1106 */
1107
1108 static u_short bplfetchmode[3] = {
1109 0, /* 1x */
1110 FMODE_BPL32, /* 2x */
1111 FMODE_BPAGEM | FMODE_BPL32 /* 4x */
1112 };
1113
1114 static u_short sprfetchmode[3] = {
1115 0, /* 1x */
1116 FMODE_SPR32, /* 2x */
1117 FMODE_SPAGEM | FMODE_SPR32 /* 4x */
1118 };
1119
1120
1121 /* --------------------------- Hardware routines --------------------------- */
1122
1123 /*
1124 * Get the video params out of `var'. If a value doesn't fit, round
1125 * it up, if it's too big, return -EINVAL.
1126 */
1127
1128 static int ami_decode_var(struct fb_var_screeninfo *var, struct amifb_par *par,
1129 const struct fb_info *info)
1130 {
1131 u_short clk_shift, line_shift;
1132 u_long maxfetchstop, fstrt, fsize, fconst, xres_n, yres_n;
1133 u_int htotal, vtotal;
1134
1135 /*
1136 * Find a matching Pixel Clock
1137 */
1138
1139 for (clk_shift = TAG_SHRES; clk_shift <= TAG_LORES; clk_shift++)
1140 if (var->pixclock <= pixclock[clk_shift])
1141 break;
1142 if (clk_shift > TAG_LORES) {
1143 DPRINTK("pixclock too high\n");
1144 return -EINVAL;
1145 }
1146 par->clk_shift = clk_shift;
1147
1148 /*
1149 * Check the Geometry Values
1150 */
1151
1152 if ((par->xres = var->xres) < 64)
1153 par->xres = 64;
1154 if ((par->yres = var->yres) < 64)
1155 par->yres = 64;
1156 if ((par->vxres = var->xres_virtual) < par->xres)
1157 par->vxres = par->xres;
1158 if ((par->vyres = var->yres_virtual) < par->yres)
1159 par->vyres = par->yres;
1160
1161 par->bpp = var->bits_per_pixel;
1162 if (!var->nonstd) {
1163 if (par->bpp < 1)
1164 par->bpp = 1;
1165 if (par->bpp > maxdepth[clk_shift]) {
1166 if (round_down_bpp && maxdepth[clk_shift])
1167 par->bpp = maxdepth[clk_shift];
1168 else {
1169 DPRINTK("invalid bpp\n");
1170 return -EINVAL;
1171 }
1172 }
1173 } else if (var->nonstd == FB_NONSTD_HAM) {
1174 if (par->bpp < 6)
1175 par->bpp = 6;
1176 if (par->bpp != 6) {
1177 if (par->bpp < 8)
1178 par->bpp = 8;
1179 if (par->bpp != 8 || !IS_AGA) {
1180 DPRINTK("invalid bpp for ham mode\n");
1181 return -EINVAL;
1182 }
1183 }
1184 } else {
1185 DPRINTK("unknown nonstd mode\n");
1186 return -EINVAL;
1187 }
1188
1189 /*
1190 * FB_VMODE_SMOOTH_XPAN will be cleared, if one of the following
1191 * checks failed and smooth scrolling is not possible
1192 */
1193
1194 par->vmode = var->vmode | FB_VMODE_SMOOTH_XPAN;
1195 switch (par->vmode & FB_VMODE_MASK) {
1196 case FB_VMODE_INTERLACED:
1197 line_shift = 0;
1198 break;
1199 case FB_VMODE_NONINTERLACED:
1200 line_shift = 1;
1201 break;
1202 case FB_VMODE_DOUBLE:
1203 if (!IS_AGA) {
1204 DPRINTK("double mode only possible with aga\n");
1205 return -EINVAL;
1206 }
1207 line_shift = 2;
1208 break;
1209 default:
1210 DPRINTK("unknown video mode\n");
1211 return -EINVAL;
1212 break;
1213 }
1214 par->line_shift = line_shift;
1215
1216 /*
1217 * Vertical and Horizontal Timings
1218 */
1219
1220 xres_n = par->xres << clk_shift;
1221 yres_n = par->yres << line_shift;
1222 par->htotal = down8((var->left_margin + par->xres + var->right_margin +
1223 var->hsync_len) << clk_shift);
1224 par->vtotal =
1225 down2(((var->upper_margin + par->yres + var->lower_margin +
1226 var->vsync_len) << line_shift) + 1);
1227
1228 if (IS_AGA)
1229 par->bplcon3 = sprpixmode[clk_shift];
1230 else
1231 par->bplcon3 = 0;
1232 if (var->sync & FB_SYNC_BROADCAST) {
1233 par->diwstop_h = par->htotal -
1234 ((var->right_margin - var->hsync_len) << clk_shift);
1235 if (IS_AGA)
1236 par->diwstop_h += mod4(var->hsync_len);
1237 else
1238 par->diwstop_h = down4(par->diwstop_h);
1239
1240 par->diwstrt_h = par->diwstop_h - xres_n;
1241 par->diwstop_v = par->vtotal -
1242 ((var->lower_margin - var->vsync_len) << line_shift);
1243 par->diwstrt_v = par->diwstop_v - yres_n;
1244 if (par->diwstop_h >= par->htotal + 8) {
1245 DPRINTK("invalid diwstop_h\n");
1246 return -EINVAL;
1247 }
1248 if (par->diwstop_v > par->vtotal) {
1249 DPRINTK("invalid diwstop_v\n");
1250 return -EINVAL;
1251 }
1252
1253 if (!IS_OCS) {
1254 /* Initialize sync with some reasonable values for pwrsave */
1255 par->hsstrt = 160;
1256 par->hsstop = 320;
1257 par->vsstrt = 30;
1258 par->vsstop = 34;
1259 } else {
1260 par->hsstrt = 0;
1261 par->hsstop = 0;
1262 par->vsstrt = 0;
1263 par->vsstop = 0;
1264 }
1265 if (par->vtotal > (PAL_VTOTAL + NTSC_VTOTAL) / 2) {
1266 /* PAL video mode */
1267 if (par->htotal != PAL_HTOTAL) {
1268 DPRINTK("htotal invalid for pal\n");
1269 return -EINVAL;
1270 }
1271 if (par->diwstrt_h < PAL_DIWSTRT_H) {
1272 DPRINTK("diwstrt_h too low for pal\n");
1273 return -EINVAL;
1274 }
1275 if (par->diwstrt_v < PAL_DIWSTRT_V) {
1276 DPRINTK("diwstrt_v too low for pal\n");
1277 return -EINVAL;
1278 }
1279 htotal = PAL_HTOTAL>>clk_shift;
1280 vtotal = PAL_VTOTAL>>1;
1281 if (!IS_OCS) {
1282 par->beamcon0 = BMC0_PAL;
1283 par->bplcon3 |= BPC3_BRDRBLNK;
1284 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
1285 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
1286 par->beamcon0 = BMC0_PAL;
1287 par->hsstop = 1;
1288 } else if (amiga_vblank != 50) {
1289 DPRINTK("pal not supported by this chipset\n");
1290 return -EINVAL;
1291 }
1292 } else {
1293 /* NTSC video mode
1294 * In the AGA chipset seems to be hardware bug with BPC3_BRDRBLNK
1295 * and NTSC activated, so than better let diwstop_h <= 1812
1296 */
1297 if (par->htotal != NTSC_HTOTAL) {
1298 DPRINTK("htotal invalid for ntsc\n");
1299 return -EINVAL;
1300 }
1301 if (par->diwstrt_h < NTSC_DIWSTRT_H) {
1302 DPRINTK("diwstrt_h too low for ntsc\n");
1303 return -EINVAL;
1304 }
1305 if (par->diwstrt_v < NTSC_DIWSTRT_V) {
1306 DPRINTK("diwstrt_v too low for ntsc\n");
1307 return -EINVAL;
1308 }
1309 htotal = NTSC_HTOTAL>>clk_shift;
1310 vtotal = NTSC_VTOTAL>>1;
1311 if (!IS_OCS) {
1312 par->beamcon0 = 0;
1313 par->bplcon3 |= BPC3_BRDRBLNK;
1314 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
1315 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
1316 par->beamcon0 = 0;
1317 par->hsstop = 1;
1318 } else if (amiga_vblank != 60) {
1319 DPRINTK("ntsc not supported by this chipset\n");
1320 return -EINVAL;
1321 }
1322 }
1323 if (IS_OCS) {
1324 if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
1325 par->diwstrt_v >= 512 || par->diwstop_v < 256) {
1326 DPRINTK("invalid position for display on ocs\n");
1327 return -EINVAL;
1328 }
1329 }
1330 } else if (!IS_OCS) {
1331 /* Programmable video mode */
1332 par->hsstrt = var->right_margin << clk_shift;
1333 par->hsstop = (var->right_margin + var->hsync_len) << clk_shift;
1334 par->diwstop_h = par->htotal - mod8(par->hsstrt) + 8 - (1 << clk_shift);
1335 if (!IS_AGA)
1336 par->diwstop_h = down4(par->diwstop_h) - 16;
1337 par->diwstrt_h = par->diwstop_h - xres_n;
1338 par->hbstop = par->diwstrt_h + 4;
1339 par->hbstrt = par->diwstop_h + 4;
1340 if (par->hbstrt >= par->htotal + 8)
1341 par->hbstrt -= par->htotal;
1342 par->hcenter = par->hsstrt + (par->htotal >> 1);
1343 par->vsstrt = var->lower_margin << line_shift;
1344 par->vsstop = (var->lower_margin + var->vsync_len) << line_shift;
1345 par->diwstop_v = par->vtotal;
1346 if ((par->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
1347 par->diwstop_v -= 2;
1348 par->diwstrt_v = par->diwstop_v - yres_n;
1349 par->vbstop = par->diwstrt_v - 2;
1350 par->vbstrt = par->diwstop_v - 2;
1351 if (par->vtotal > 2048) {
1352 DPRINTK("vtotal too high\n");
1353 return -EINVAL;
1354 }
1355 if (par->htotal > 2048) {
1356 DPRINTK("htotal too high\n");
1357 return -EINVAL;
1358 }
1359 par->bplcon3 |= BPC3_EXTBLKEN;
1360 par->beamcon0 = BMC0_HARDDIS | BMC0_VARVBEN | BMC0_LOLDIS |
1361 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARBEAMEN |
1362 BMC0_PAL | BMC0_VARCSYEN;
1363 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
1364 par->beamcon0 |= BMC0_HSYTRUE;
1365 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
1366 par->beamcon0 |= BMC0_VSYTRUE;
1367 if (var->sync & FB_SYNC_COMP_HIGH_ACT)
1368 par->beamcon0 |= BMC0_CSYTRUE;
1369 htotal = par->htotal>>clk_shift;
1370 vtotal = par->vtotal>>1;
1371 } else {
1372 DPRINTK("only broadcast modes possible for ocs\n");
1373 return -EINVAL;
1374 }
1375
1376 /*
1377 * Checking the DMA timing
1378 */
1379
1380 fconst = 16 << maxfmode << clk_shift;
1381
1382 /*
1383 * smallest window start value without turn off other dma cycles
1384 * than sprite1-7, unless you change min_fstrt
1385 */
1386
1387
1388 fsize = ((maxfmode + clk_shift <= 1) ? fconst : 64);
1389 fstrt = downx(fconst, par->diwstrt_h - 4) - fsize;
1390 if (fstrt < min_fstrt) {
1391 DPRINTK("fetch start too low\n");
1392 return -EINVAL;
1393 }
1394
1395 /*
1396 * smallest window start value where smooth scrolling is possible
1397 */
1398
1399 fstrt = downx(fconst, par->diwstrt_h - fconst + (1 << clk_shift) - 4) -
1400 fsize;
1401 if (fstrt < min_fstrt)
1402 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
1403
1404 maxfetchstop = down16(par->htotal - 80);
1405
1406 fstrt = downx(fconst, par->diwstrt_h - 4) - 64 - fconst;
1407 fsize = upx(fconst, xres_n +
1408 modx(fconst, downx(1 << clk_shift, par->diwstrt_h - 4)));
1409 if (fstrt + fsize > maxfetchstop)
1410 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
1411
1412 fsize = upx(fconst, xres_n);
1413 if (fstrt + fsize > maxfetchstop) {
1414 DPRINTK("fetch stop too high\n");
1415 return -EINVAL;
1416 }
1417
1418 if (maxfmode + clk_shift <= 1) {
1419 fsize = up64(xres_n + fconst - 1);
1420 if (min_fstrt + fsize - 64 > maxfetchstop)
1421 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
1422
1423 fsize = up64(xres_n);
1424 if (min_fstrt + fsize - 64 > maxfetchstop) {
1425 DPRINTK("fetch size too high\n");
1426 return -EINVAL;
1427 }
1428
1429 fsize -= 64;
1430 } else
1431 fsize -= fconst;
1432
1433 /*
1434 * Check if there is enough time to update the bitplane pointers for ywrap
1435 */
1436
1437 if (par->htotal - fsize - 64 < par->bpp * 64)
1438 par->vmode &= ~FB_VMODE_YWRAP;
1439
1440 /*
1441 * Bitplane calculations and check the Memory Requirements
1442 */
1443
1444 if (amifb_ilbm) {
1445 par->next_plane = div8(upx(16 << maxfmode, par->vxres));
1446 par->next_line = par->bpp * par->next_plane;
1447 if (par->next_line * par->vyres > info->fix.smem_len) {
1448 DPRINTK("too few video mem\n");
1449 return -EINVAL;
1450 }
1451 } else {
1452 par->next_line = div8(upx(16 << maxfmode, par->vxres));
1453 par->next_plane = par->vyres * par->next_line;
1454 if (par->next_plane * par->bpp > info->fix.smem_len) {
1455 DPRINTK("too few video mem\n");
1456 return -EINVAL;
1457 }
1458 }
1459
1460 /*
1461 * Hardware Register Values
1462 */
1463
1464 par->bplcon0 = BPC0_COLOR | bplpixmode[clk_shift];
1465 if (!IS_OCS)
1466 par->bplcon0 |= BPC0_ECSENA;
1467 if (par->bpp == 8)
1468 par->bplcon0 |= BPC0_BPU3;
1469 else
1470 par->bplcon0 |= par->bpp << 12;
1471 if (var->nonstd == FB_NONSTD_HAM)
1472 par->bplcon0 |= BPC0_HAM;
1473 if (var->sync & FB_SYNC_EXT)
1474 par->bplcon0 |= BPC0_ERSY;
1475
1476 if (IS_AGA)
1477 par->fmode = bplfetchmode[maxfmode];
1478
1479 switch (par->vmode & FB_VMODE_MASK) {
1480 case FB_VMODE_INTERLACED:
1481 par->bplcon0 |= BPC0_LACE;
1482 break;
1483 case FB_VMODE_DOUBLE:
1484 if (IS_AGA)
1485 par->fmode |= FMODE_SSCAN2 | FMODE_BSCAN2;
1486 break;
1487 }
1488
1489 if (!((par->vmode ^ var->vmode) & FB_VMODE_YWRAP)) {
1490 par->xoffset = var->xoffset;
1491 par->yoffset = var->yoffset;
1492 if (par->vmode & FB_VMODE_YWRAP) {
1493 if (par->yoffset >= par->vyres)
1494 par->xoffset = par->yoffset = 0;
1495 } else {
1496 if (par->xoffset > upx(16 << maxfmode, par->vxres - par->xres) ||
1497 par->yoffset > par->vyres - par->yres)
1498 par->xoffset = par->yoffset = 0;
1499 }
1500 } else
1501 par->xoffset = par->yoffset = 0;
1502
1503 par->crsr.crsr_x = par->crsr.crsr_y = 0;
1504 par->crsr.spot_x = par->crsr.spot_y = 0;
1505 par->crsr.height = par->crsr.width = 0;
1506
1507 return 0;
1508 }
1509
1510 /*
1511 * Fill the `var' structure based on the values in `par' and maybe
1512 * other values read out of the hardware.
1513 */
1514
1515 static void ami_encode_var(struct fb_var_screeninfo *var,
1516 struct amifb_par *par)
1517 {
1518 u_short clk_shift, line_shift;
1519
1520 memset(var, 0, sizeof(struct fb_var_screeninfo));
1521
1522 clk_shift = par->clk_shift;
1523 line_shift = par->line_shift;
1524
1525 var->xres = par->xres;
1526 var->yres = par->yres;
1527 var->xres_virtual = par->vxres;
1528 var->yres_virtual = par->vyres;
1529 var->xoffset = par->xoffset;
1530 var->yoffset = par->yoffset;
1531
1532 var->bits_per_pixel = par->bpp;
1533 var->grayscale = 0;
1534
1535 var->red.offset = 0;
1536 var->red.msb_right = 0;
1537 var->red.length = par->bpp;
1538 if (par->bplcon0 & BPC0_HAM)
1539 var->red.length -= 2;
1540 var->blue = var->green = var->red;
1541 var->transp.offset = 0;
1542 var->transp.length = 0;
1543 var->transp.msb_right = 0;
1544
1545 if (par->bplcon0 & BPC0_HAM)
1546 var->nonstd = FB_NONSTD_HAM;
1547 else
1548 var->nonstd = 0;
1549 var->activate = 0;
1550
1551 var->height = -1;
1552 var->width = -1;
1553
1554 var->pixclock = pixclock[clk_shift];
1555
1556 if (IS_AGA && par->fmode & FMODE_BSCAN2)
1557 var->vmode = FB_VMODE_DOUBLE;
1558 else if (par->bplcon0 & BPC0_LACE)
1559 var->vmode = FB_VMODE_INTERLACED;
1560 else
1561 var->vmode = FB_VMODE_NONINTERLACED;
1562
1563 if (!IS_OCS && par->beamcon0 & BMC0_VARBEAMEN) {
1564 var->hsync_len = (par->hsstop - par->hsstrt)>>clk_shift;
1565 var->right_margin = par->hsstrt>>clk_shift;
1566 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
1567 var->vsync_len = (par->vsstop - par->vsstrt)>>line_shift;
1568 var->lower_margin = par->vsstrt>>line_shift;
1569 var->upper_margin = (par->vtotal>>line_shift) - var->yres - var->lower_margin - var->vsync_len;
1570 var->sync = 0;
1571 if (par->beamcon0 & BMC0_HSYTRUE)
1572 var->sync |= FB_SYNC_HOR_HIGH_ACT;
1573 if (par->beamcon0 & BMC0_VSYTRUE)
1574 var->sync |= FB_SYNC_VERT_HIGH_ACT;
1575 if (par->beamcon0 & BMC0_CSYTRUE)
1576 var->sync |= FB_SYNC_COMP_HIGH_ACT;
1577 } else {
1578 var->sync = FB_SYNC_BROADCAST;
1579 var->hsync_len = (152>>clk_shift) + mod4(par->diwstop_h);
1580 var->right_margin = ((par->htotal - down4(par->diwstop_h))>>clk_shift) + var->hsync_len;
1581 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
1582 var->vsync_len = 4>>line_shift;
1583 var->lower_margin = ((par->vtotal - par->diwstop_v)>>line_shift) + var->vsync_len;
1584 var->upper_margin = (((par->vtotal - 2)>>line_shift) + 1) - var->yres -
1585 var->lower_margin - var->vsync_len;
1586 }
1587
1588 if (par->bplcon0 & BPC0_ERSY)
1589 var->sync |= FB_SYNC_EXT;
1590 if (par->vmode & FB_VMODE_YWRAP)
1591 var->vmode |= FB_VMODE_YWRAP;
1592 }
1593
1594
1595 /*
1596 * Update hardware
1597 */
1598
1599 static void ami_update_par(struct fb_info *info)
1600 {
1601 struct amifb_par *par = info->par;
1602 short clk_shift, vshift, fstrt, fsize, fstop, fconst, shift, move, mod;
1603
1604 clk_shift = par->clk_shift;
1605
1606 if (!(par->vmode & FB_VMODE_SMOOTH_XPAN))
1607 par->xoffset = upx(16 << maxfmode, par->xoffset);
1608
1609 fconst = 16 << maxfmode << clk_shift;
1610 vshift = modx(16 << maxfmode, par->xoffset);
1611 fstrt = par->diwstrt_h - (vshift << clk_shift) - 4;
1612 fsize = (par->xres + vshift) << clk_shift;
1613 shift = modx(fconst, fstrt);
1614 move = downx(2 << maxfmode, div8(par->xoffset));
1615 if (maxfmode + clk_shift > 1) {
1616 fstrt = downx(fconst, fstrt) - 64;
1617 fsize = upx(fconst, fsize);
1618 fstop = fstrt + fsize - fconst;
1619 } else {
1620 mod = fstrt = downx(fconst, fstrt) - fconst;
1621 fstop = fstrt + upx(fconst, fsize) - 64;
1622 fsize = up64(fsize);
1623 fstrt = fstop - fsize + 64;
1624 if (fstrt < min_fstrt) {
1625 fstop += min_fstrt - fstrt;
1626 fstrt = min_fstrt;
1627 }
1628 move = move - div8((mod - fstrt)>>clk_shift);
1629 }
1630 mod = par->next_line - div8(fsize>>clk_shift);
1631 par->ddfstrt = fstrt;
1632 par->ddfstop = fstop;
1633 par->bplcon1 = hscroll2hw(shift);
1634 par->bpl2mod = mod;
1635 if (par->bplcon0 & BPC0_LACE)
1636 par->bpl2mod += par->next_line;
1637 if (IS_AGA && (par->fmode & FMODE_BSCAN2))
1638 par->bpl1mod = -div8(fsize>>clk_shift);
1639 else
1640 par->bpl1mod = par->bpl2mod;
1641
1642 if (par->yoffset) {
1643 par->bplpt0 = info->fix.smem_start +
1644 par->next_line * par->yoffset + move;
1645 if (par->vmode & FB_VMODE_YWRAP) {
1646 if (par->yoffset > par->vyres - par->yres) {
1647 par->bplpt0wrap = info->fix.smem_start + move;
1648 if (par->bplcon0 & BPC0_LACE &&
1649 mod2(par->diwstrt_v + par->vyres -
1650 par->yoffset))
1651 par->bplpt0wrap += par->next_line;
1652 }
1653 }
1654 } else
1655 par->bplpt0 = info->fix.smem_start + move;
1656
1657 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v))
1658 par->bplpt0 += par->next_line;
1659 }
1660
1661
1662 /*
1663 * Pan or Wrap the Display
1664 *
1665 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1666 * in `var'.
1667 */
1668
1669 static void ami_pan_var(struct fb_var_screeninfo *var, struct fb_info *info)
1670 {
1671 struct amifb_par *par = info->par;
1672
1673 par->xoffset = var->xoffset;
1674 par->yoffset = var->yoffset;
1675 if (var->vmode & FB_VMODE_YWRAP)
1676 par->vmode |= FB_VMODE_YWRAP;
1677 else
1678 par->vmode &= ~FB_VMODE_YWRAP;
1679
1680 do_vmode_pan = 0;
1681 ami_update_par(info);
1682 do_vmode_pan = 1;
1683 }
1684
1685
1686 static void ami_update_display(const struct amifb_par *par)
1687 {
1688 custom.bplcon1 = par->bplcon1;
1689 custom.bpl1mod = par->bpl1mod;
1690 custom.bpl2mod = par->bpl2mod;
1691 custom.ddfstrt = ddfstrt2hw(par->ddfstrt);
1692 custom.ddfstop = ddfstop2hw(par->ddfstop);
1693 }
1694
1695 /*
1696 * Change the video mode (called by VBlank interrupt)
1697 */
1698
1699 static void ami_init_display(const struct amifb_par *par)
1700 {
1701 int i;
1702
1703 custom.bplcon0 = par->bplcon0 & ~BPC0_LACE;
1704 custom.bplcon2 = (IS_OCS ? 0 : BPC2_KILLEHB) | BPC2_PF2P2 | BPC2_PF1P2;
1705 if (!IS_OCS) {
1706 custom.bplcon3 = par->bplcon3;
1707 if (IS_AGA)
1708 custom.bplcon4 = BPC4_ESPRM4 | BPC4_OSPRM4;
1709 if (par->beamcon0 & BMC0_VARBEAMEN) {
1710 custom.htotal = htotal2hw(par->htotal);
1711 custom.hbstrt = hbstrt2hw(par->hbstrt);
1712 custom.hbstop = hbstop2hw(par->hbstop);
1713 custom.hsstrt = hsstrt2hw(par->hsstrt);
1714 custom.hsstop = hsstop2hw(par->hsstop);
1715 custom.hcenter = hcenter2hw(par->hcenter);
1716 custom.vtotal = vtotal2hw(par->vtotal);
1717 custom.vbstrt = vbstrt2hw(par->vbstrt);
1718 custom.vbstop = vbstop2hw(par->vbstop);
1719 custom.vsstrt = vsstrt2hw(par->vsstrt);
1720 custom.vsstop = vsstop2hw(par->vsstop);
1721 }
1722 }
1723 if (!IS_OCS || par->hsstop)
1724 custom.beamcon0 = par->beamcon0;
1725 if (IS_AGA)
1726 custom.fmode = par->fmode;
1727
1728 /*
1729 * The minimum period for audio depends on htotal
1730 */
1731
1732 amiga_audio_min_period = div16(par->htotal);
1733
1734 is_lace = par->bplcon0 & BPC0_LACE ? 1 : 0;
1735 #if 1
1736 if (is_lace) {
1737 i = custom.vposr >> 15;
1738 } else {
1739 custom.vposw = custom.vposr | 0x8000;
1740 i = 1;
1741 }
1742 #else
1743 i = 1;
1744 custom.vposw = custom.vposr | 0x8000;
1745 #endif
1746 custom.cop2lc = (u_short *)ZTWO_PADDR(copdisplay.list[currentcop][i]);
1747 }
1748
1749 /*
1750 * (Un)Blank the screen (called by VBlank interrupt)
1751 */
1752
1753 static void ami_do_blank(const struct amifb_par *par)
1754 {
1755 #if defined(CONFIG_FB_AMIGA_AGA)
1756 u_short bplcon3 = par->bplcon3;
1757 #endif
1758 u_char red, green, blue;
1759
1760 if (do_blank > 0) {
1761 custom.dmacon = DMAF_RASTER | DMAF_SPRITE;
1762 red = green = blue = 0;
1763 if (!IS_OCS && do_blank > 1) {
1764 switch (do_blank) {
1765 case FB_BLANK_VSYNC_SUSPEND:
1766 custom.hsstrt = hsstrt2hw(par->hsstrt);
1767 custom.hsstop = hsstop2hw(par->hsstop);
1768 custom.vsstrt = vsstrt2hw(par->vtotal + 4);
1769 custom.vsstop = vsstop2hw(par->vtotal + 4);
1770 break;
1771 case FB_BLANK_HSYNC_SUSPEND:
1772 custom.hsstrt = hsstrt2hw(par->htotal + 16);
1773 custom.hsstop = hsstop2hw(par->htotal + 16);
1774 custom.vsstrt = vsstrt2hw(par->vsstrt);
1775 custom.vsstop = vsstrt2hw(par->vsstop);
1776 break;
1777 case FB_BLANK_POWERDOWN:
1778 custom.hsstrt = hsstrt2hw(par->htotal + 16);
1779 custom.hsstop = hsstop2hw(par->htotal + 16);
1780 custom.vsstrt = vsstrt2hw(par->vtotal + 4);
1781 custom.vsstop = vsstop2hw(par->vtotal + 4);
1782 break;
1783 }
1784 if (!(par->beamcon0 & BMC0_VARBEAMEN)) {
1785 custom.htotal = htotal2hw(par->htotal);
1786 custom.vtotal = vtotal2hw(par->vtotal);
1787 custom.beamcon0 = BMC0_HARDDIS | BMC0_VARBEAMEN |
1788 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARCSYEN;
1789 }
1790 }
1791 } else {
1792 custom.dmacon = DMAF_SETCLR | DMAF_RASTER | DMAF_SPRITE;
1793 red = red0;
1794 green = green0;
1795 blue = blue0;
1796 if (!IS_OCS) {
1797 custom.hsstrt = hsstrt2hw(par->hsstrt);
1798 custom.hsstop = hsstop2hw(par->hsstop);
1799 custom.vsstrt = vsstrt2hw(par->vsstrt);
1800 custom.vsstop = vsstop2hw(par->vsstop);
1801 custom.beamcon0 = par->beamcon0;
1802 }
1803 }
1804 #if defined(CONFIG_FB_AMIGA_AGA)
1805 if (IS_AGA) {
1806 custom.bplcon3 = bplcon3;
1807 custom.color[0] = rgb2hw8_high(red, green, blue);
1808 custom.bplcon3 = bplcon3 | BPC3_LOCT;
1809 custom.color[0] = rgb2hw8_low(red, green, blue);
1810 custom.bplcon3 = bplcon3;
1811 } else
1812 #endif
1813 #if defined(CONFIG_FB_AMIGA_ECS)
1814 if (par->bplcon0 & BPC0_SHRES) {
1815 u_short color, mask;
1816 int i;
1817
1818 mask = 0x3333;
1819 color = rgb2hw2(red, green, blue);
1820 for (i = 12; i >= 0; i -= 4)
1821 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
1822 mask <<= 2; color >>= 2;
1823 for (i = 3; i >= 0; i--)
1824 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
1825 } else
1826 #endif
1827 custom.color[0] = rgb2hw4(red, green, blue);
1828 is_blanked = do_blank > 0 ? do_blank : 0;
1829 }
1830
1831 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix,
1832 const struct amifb_par *par)
1833 {
1834 fix->crsr_width = fix->crsr_xsize = par->crsr.width;
1835 fix->crsr_height = fix->crsr_ysize = par->crsr.height;
1836 fix->crsr_color1 = 17;
1837 fix->crsr_color2 = 18;
1838 return 0;
1839 }
1840
1841 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var,
1842 u_char __user *data,
1843 const struct amifb_par *par)
1844 {
1845 register u_short *lspr, *sspr;
1846 #ifdef __mc68000__
1847 register u_long datawords asm ("d2");
1848 #else
1849 register u_long datawords;
1850 #endif
1851 register short delta;
1852 register u_char color;
1853 short height, width, bits, words;
1854 int size, alloc;
1855
1856 size = par->crsr.height * par->crsr.width;
1857 alloc = var->height * var->width;
1858 var->height = par->crsr.height;
1859 var->width = par->crsr.width;
1860 var->xspot = par->crsr.spot_x;
1861 var->yspot = par->crsr.spot_y;
1862 if (size > var->height * var->width)
1863 return -ENAMETOOLONG;
1864 delta = 1 << par->crsr.fmode;
1865 lspr = lofsprite + (delta << 1);
1866 if (par->bplcon0 & BPC0_LACE)
1867 sspr = shfsprite + (delta << 1);
1868 else
1869 sspr = NULL;
1870 for (height = (short)var->height - 1; height >= 0; height--) {
1871 bits = 0; words = delta; datawords = 0;
1872 for (width = (short)var->width - 1; width >= 0; width--) {
1873 if (bits == 0) {
1874 bits = 16; --words;
1875 #ifdef __mc68000__
1876 asm volatile ("movew %1@(%3:w:2),%0 ; swap %0 ; movew %1@+,%0"
1877 : "=d" (datawords), "=a" (lspr) : "1" (lspr), "d" (delta));
1878 #else
1879 datawords = (*(lspr + delta) << 16) | (*lspr++);
1880 #endif
1881 }
1882 --bits;
1883 #ifdef __mc68000__
1884 asm volatile (
1885 "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; "
1886 "swap %1 ; lslw #1,%1 ; roxlb #1,%0"
1887 : "=d" (color), "=d" (datawords) : "1" (datawords));
1888 #else
1889 color = (((datawords >> 30) & 2)
1890 | ((datawords >> 15) & 1));
1891 datawords <<= 1;
1892 #endif
1893 /* FIXME: check the return value + test the change */
1894 put_user(color, data++);
1895 }
1896 if (bits > 0) {
1897 --words; ++lspr;
1898 }
1899 while (--words >= 0)
1900 ++lspr;
1901 #ifdef __mc68000__
1902 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
1903 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
1904 #else
1905 lspr += delta;
1906 if (sspr) {
1907 u_short *tmp = lspr;
1908 lspr = sspr;
1909 sspr = tmp;
1910 }
1911 #endif
1912 }
1913 return 0;
1914 }
1915
1916 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var,
1917 u_char __user *data, struct amifb_par *par)
1918 {
1919 register u_short *lspr, *sspr;
1920 #ifdef __mc68000__
1921 register u_long datawords asm ("d2");
1922 #else
1923 register u_long datawords;
1924 #endif
1925 register short delta;
1926 u_short fmode;
1927 short height, width, bits, words;
1928
1929 if (!var->width)
1930 return -EINVAL;
1931 else if (var->width <= 16)
1932 fmode = TAG_FMODE_1;
1933 else if (var->width <= 32)
1934 fmode = TAG_FMODE_2;
1935 else if (var->width <= 64)
1936 fmode = TAG_FMODE_4;
1937 else
1938 return -EINVAL;
1939 if (fmode > maxfmode)
1940 return -EINVAL;
1941 if (!var->height)
1942 return -EINVAL;
1943 delta = 1 << fmode;
1944 lofsprite = shfsprite = (u_short *)spritememory;
1945 lspr = lofsprite + (delta << 1);
1946 if (par->bplcon0 & BPC0_LACE) {
1947 if (((var->height + 4) << fmode << 2) > SPRITEMEMSIZE)
1948 return -EINVAL;
1949 memset(lspr, 0, (var->height + 4) << fmode << 2);
1950 shfsprite += ((var->height + 5)&-2) << fmode;
1951 sspr = shfsprite + (delta << 1);
1952 } else {
1953 if (((var->height + 2) << fmode << 2) > SPRITEMEMSIZE)
1954 return -EINVAL;
1955 memset(lspr, 0, (var->height + 2) << fmode << 2);
1956 sspr = NULL;
1957 }
1958 for (height = (short)var->height - 1; height >= 0; height--) {
1959 bits = 16; words = delta; datawords = 0;
1960 for (width = (short)var->width - 1; width >= 0; width--) {
1961 unsigned long tdata = 0;
1962 /* FIXME: check the return value + test the change */
1963 get_user(tdata, data);
1964 data++;
1965 #ifdef __mc68000__
1966 asm volatile (
1967 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0 ; "
1968 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0"
1969 : "=d" (datawords)
1970 : "0" (datawords), "d" (tdata));
1971 #else
1972 datawords = ((datawords << 1) & 0xfffefffe);
1973 datawords |= tdata & 1;
1974 datawords |= (tdata & 2) << (16 - 1);
1975 #endif
1976 if (--bits == 0) {
1977 bits = 16; --words;
1978 #ifdef __mc68000__
1979 asm volatile ("swap %2 ; movew %2,%0@(%3:w:2) ; swap %2 ; movew %2,%0@+"
1980 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta));
1981 #else
1982 *(lspr + delta) = (u_short) (datawords >> 16);
1983 *lspr++ = (u_short) (datawords & 0xffff);
1984 #endif
1985 }
1986 }
1987 if (bits < 16) {
1988 --words;
1989 #ifdef __mc68000__
1990 asm volatile (
1991 "swap %2 ; lslw %4,%2 ; movew %2,%0@(%3:w:2) ; "
1992 "swap %2 ; lslw %4,%2 ; movew %2,%0@+"
1993 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta), "d" (bits));
1994 #else
1995 *(lspr + delta) = (u_short) (datawords >> (16 + bits));
1996 *lspr++ = (u_short) ((datawords & 0x0000ffff) >> bits);
1997 #endif
1998 }
1999 while (--words >= 0) {
2000 #ifdef __mc68000__
2001 asm volatile ("moveql #0,%%d0 ; movew %%d0,%0@(%2:w:2) ; movew %%d0,%0@+"
2002 : "=a" (lspr) : "0" (lspr), "d" (delta) : "d0");
2003 #else
2004 *(lspr + delta) = 0;
2005 *lspr++ = 0;
2006 #endif
2007 }
2008 #ifdef __mc68000__
2009 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
2010 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
2011 #else
2012 lspr += delta;
2013 if (sspr) {
2014 u_short *tmp = lspr;
2015 lspr = sspr;
2016 sspr = tmp;
2017 }
2018 #endif
2019 }
2020 par->crsr.height = var->height;
2021 par->crsr.width = var->width;
2022 par->crsr.spot_x = var->xspot;
2023 par->crsr.spot_y = var->yspot;
2024 par->crsr.fmode = fmode;
2025 if (IS_AGA) {
2026 par->fmode &= ~(FMODE_SPAGEM | FMODE_SPR32);
2027 par->fmode |= sprfetchmode[fmode];
2028 custom.fmode = par->fmode;
2029 }
2030 return 0;
2031 }
2032
2033 static int ami_get_cursorstate(struct fb_cursorstate *state,
2034 const struct amifb_par *par)
2035 {
2036 state->xoffset = par->crsr.crsr_x;
2037 state->yoffset = par->crsr.crsr_y;
2038 state->mode = cursormode;
2039 return 0;
2040 }
2041
2042 static int ami_set_cursorstate(struct fb_cursorstate *state,
2043 struct amifb_par *par)
2044 {
2045 par->crsr.crsr_x = state->xoffset;
2046 par->crsr.crsr_y = state->yoffset;
2047 if ((cursormode = state->mode) == FB_CURSOR_OFF)
2048 cursorstate = -1;
2049 do_cursor = 1;
2050 return 0;
2051 }
2052
2053 static void ami_set_sprite(const struct amifb_par *par)
2054 {
2055 copins *copl, *cops;
2056 u_short hs, vs, ve;
2057 u_long pl, ps;
2058 short mx, my;
2059
2060 cops = copdisplay.list[currentcop][0];
2061 copl = copdisplay.list[currentcop][1];
2062 ps = pl = ZTWO_PADDR(dummysprite);
2063 mx = par->crsr.crsr_x - par->crsr.spot_x;
2064 my = par->crsr.crsr_y - par->crsr.spot_y;
2065 if (!(par->vmode & FB_VMODE_YWRAP)) {
2066 mx -= par->xoffset;
2067 my -= par->yoffset;
2068 }
2069 if (!is_blanked && cursorstate > 0 && par->crsr.height > 0 &&
2070 mx > -(short)par->crsr.width && mx < par->xres &&
2071 my > -(short)par->crsr.height && my < par->yres) {
2072 pl = ZTWO_PADDR(lofsprite);
2073 hs = par->diwstrt_h + (mx << par->clk_shift) - 4;
2074 vs = par->diwstrt_v + (my << par->line_shift);
2075 ve = vs + (par->crsr.height << par->line_shift);
2076 if (par->bplcon0 & BPC0_LACE) {
2077 ps = ZTWO_PADDR(shfsprite);
2078 lofsprite[0] = spr2hw_pos(vs, hs);
2079 shfsprite[0] = spr2hw_pos(vs + 1, hs);
2080 if (mod2(vs)) {
2081 lofsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
2082 shfsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs + 1, hs, ve + 1);
2083 swap(pl, ps);
2084 } else {
2085 lofsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs, hs, ve + 1);
2086 shfsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs + 1, hs, ve);
2087 }
2088 } else {
2089 lofsprite[0] = spr2hw_pos(vs, hs) | (IS_AGA && (par->fmode & FMODE_BSCAN2) ? 0x80 : 0);
2090 lofsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
2091 }
2092 }
2093 copl[cop_spr0ptrh].w[1] = highw(pl);
2094 copl[cop_spr0ptrl].w[1] = loww(pl);
2095 if (par->bplcon0 & BPC0_LACE) {
2096 cops[cop_spr0ptrh].w[1] = highw(ps);
2097 cops[cop_spr0ptrl].w[1] = loww(ps);
2098 }
2099 }
2100
2101
2102 /*
2103 * Initialise the Copper Initialisation List
2104 */
2105
2106 static void __init ami_init_copper(void)
2107 {
2108 copins *cop = copdisplay.init;
2109 u_long p;
2110 int i;
2111
2112 if (!IS_OCS) {
2113 (cop++)->l = CMOVE(BPC0_COLOR | BPC0_SHRES | BPC0_ECSENA, bplcon0);
2114 (cop++)->l = CMOVE(0x0181, diwstrt);
2115 (cop++)->l = CMOVE(0x0281, diwstop);
2116 (cop++)->l = CMOVE(0x0000, diwhigh);
2117 } else
2118 (cop++)->l = CMOVE(BPC0_COLOR, bplcon0);
2119 p = ZTWO_PADDR(dummysprite);
2120 for (i = 0; i < 8; i++) {
2121 (cop++)->l = CMOVE(0, spr[i].pos);
2122 (cop++)->l = CMOVE(highw(p), sprpt[i]);
2123 (cop++)->l = CMOVE2(loww(p), sprpt[i]);
2124 }
2125
2126 (cop++)->l = CMOVE(IF_SETCLR | IF_COPER, intreq);
2127 copdisplay.wait = cop;
2128 (cop++)->l = CEND;
2129 (cop++)->l = CMOVE(0, copjmp2);
2130 cop->l = CEND;
2131
2132 custom.cop1lc = (u_short *)ZTWO_PADDR(copdisplay.init);
2133 custom.copjmp1 = 0;
2134 }
2135
2136 static void ami_reinit_copper(const struct amifb_par *par)
2137 {
2138 copdisplay.init[cip_bplcon0].w[1] = ~(BPC0_BPU3 | BPC0_BPU2 | BPC0_BPU1 | BPC0_BPU0) & par->bplcon0;
2139 copdisplay.wait->l = CWAIT(32, par->diwstrt_v - 4);
2140 }
2141
2142
2143 /*
2144 * Rebuild the Copper List
2145 *
2146 * We only change the things that are not static
2147 */
2148
2149 static void ami_rebuild_copper(const struct amifb_par *par)
2150 {
2151 copins *copl, *cops;
2152 u_short line, h_end1, h_end2;
2153 short i;
2154 u_long p;
2155
2156 if (IS_AGA && maxfmode + par->clk_shift == 0)
2157 h_end1 = par->diwstrt_h - 64;
2158 else
2159 h_end1 = par->htotal - 32;
2160 h_end2 = par->ddfstop + 64;
2161
2162 ami_set_sprite(par);
2163
2164 copl = copdisplay.rebuild[1];
2165 p = par->bplpt0;
2166 if (par->vmode & FB_VMODE_YWRAP) {
2167 if ((par->vyres - par->yoffset) != 1 || !mod2(par->diwstrt_v)) {
2168 if (par->yoffset > par->vyres - par->yres) {
2169 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2170 (copl++)->l = CMOVE(highw(p), bplpt[i]);
2171 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
2172 }
2173 line = par->diwstrt_v + ((par->vyres - par->yoffset) << par->line_shift) - 1;
2174 while (line >= 512) {
2175 (copl++)->l = CWAIT(h_end1, 510);
2176 line -= 512;
2177 }
2178 if (line >= 510 && IS_AGA && maxfmode + par->clk_shift == 0)
2179 (copl++)->l = CWAIT(h_end1, line);
2180 else
2181 (copl++)->l = CWAIT(h_end2, line);
2182 p = par->bplpt0wrap;
2183 }
2184 } else
2185 p = par->bplpt0wrap;
2186 }
2187 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2188 (copl++)->l = CMOVE(highw(p), bplpt[i]);
2189 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
2190 }
2191 copl->l = CEND;
2192
2193 if (par->bplcon0 & BPC0_LACE) {
2194 cops = copdisplay.rebuild[0];
2195 p = par->bplpt0;
2196 if (mod2(par->diwstrt_v))
2197 p -= par->next_line;
2198 else
2199 p += par->next_line;
2200 if (par->vmode & FB_VMODE_YWRAP) {
2201 if ((par->vyres - par->yoffset) != 1 || mod2(par->diwstrt_v)) {
2202 if (par->yoffset > par->vyres - par->yres + 1) {
2203 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2204 (cops++)->l = CMOVE(highw(p), bplpt[i]);
2205 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
2206 }
2207 line = par->diwstrt_v + ((par->vyres - par->yoffset) << par->line_shift) - 2;
2208 while (line >= 512) {
2209 (cops++)->l = CWAIT(h_end1, 510);
2210 line -= 512;
2211 }
2212 if (line > 510 && IS_AGA && maxfmode + par->clk_shift == 0)
2213 (cops++)->l = CWAIT(h_end1, line);
2214 else
2215 (cops++)->l = CWAIT(h_end2, line);
2216 p = par->bplpt0wrap;
2217 if (mod2(par->diwstrt_v + par->vyres -
2218 par->yoffset))
2219 p -= par->next_line;
2220 else
2221 p += par->next_line;
2222 }
2223 } else
2224 p = par->bplpt0wrap - par->next_line;
2225 }
2226 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2227 (cops++)->l = CMOVE(highw(p), bplpt[i]);
2228 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
2229 }
2230 cops->l = CEND;
2231 }
2232 }
2233
2234
2235 /*
2236 * Build the Copper List
2237 */
2238
2239 static void ami_build_copper(struct fb_info *info)
2240 {
2241 struct amifb_par *par = info->par;
2242 copins *copl, *cops;
2243 u_long p;
2244
2245 currentcop = 1 - currentcop;
2246
2247 copl = copdisplay.list[currentcop][1];
2248
2249 (copl++)->l = CWAIT(0, 10);
2250 (copl++)->l = CMOVE(par->bplcon0, bplcon0);
2251 (copl++)->l = CMOVE(0, sprpt[0]);
2252 (copl++)->l = CMOVE2(0, sprpt[0]);
2253
2254 if (par->bplcon0 & BPC0_LACE) {
2255 cops = copdisplay.list[currentcop][0];
2256
2257 (cops++)->l = CWAIT(0, 10);
2258 (cops++)->l = CMOVE(par->bplcon0, bplcon0);
2259 (cops++)->l = CMOVE(0, sprpt[0]);
2260 (cops++)->l = CMOVE2(0, sprpt[0]);
2261
2262 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v + 1), diwstrt);
2263 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v + 1), diwstop);
2264 (cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
2265 (cops++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
2266 if (!IS_OCS) {
2267 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v + 1,
2268 par->diwstop_h, par->diwstop_v + 1), diwhigh);
2269 (cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
2270 par->diwstop_h, par->diwstop_v), diwhigh);
2271 #if 0
2272 if (par->beamcon0 & BMC0_VARBEAMEN) {
2273 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
2274 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt + 1), vbstrt);
2275 (copl++)->l = CMOVE(vbstop2hw(par->vbstop + 1), vbstop);
2276 (cops++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
2277 (cops++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
2278 (cops++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
2279 }
2280 #endif
2281 }
2282 p = ZTWO_PADDR(copdisplay.list[currentcop][0]);
2283 (copl++)->l = CMOVE(highw(p), cop2lc);
2284 (copl++)->l = CMOVE2(loww(p), cop2lc);
2285 p = ZTWO_PADDR(copdisplay.list[currentcop][1]);
2286 (cops++)->l = CMOVE(highw(p), cop2lc);
2287 (cops++)->l = CMOVE2(loww(p), cop2lc);
2288 copdisplay.rebuild[0] = cops;
2289 } else {
2290 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
2291 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
2292 if (!IS_OCS) {
2293 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
2294 par->diwstop_h, par->diwstop_v), diwhigh);
2295 #if 0
2296 if (par->beamcon0 & BMC0_VARBEAMEN) {
2297 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
2298 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
2299 (copl++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
2300 }
2301 #endif
2302 }
2303 }
2304 copdisplay.rebuild[1] = copl;
2305
2306 ami_update_par(info);
2307 ami_rebuild_copper(info->par);
2308 }
2309
2310 #ifndef MODULE
2311 static void __init amifb_setup_mcap(char *spec)
2312 {
2313 char *p;
2314 int vmin, vmax, hmin, hmax;
2315
2316 /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax>
2317 * <V*> vertical freq. in Hz
2318 * <H*> horizontal freq. in kHz
2319 */
2320
2321 if (!(p = strsep(&spec, ";")) || !*p)
2322 return;
2323 vmin = simple_strtoul(p, NULL, 10);
2324 if (vmin <= 0)
2325 return;
2326 if (!(p = strsep(&spec, ";")) || !*p)
2327 return;
2328 vmax = simple_strtoul(p, NULL, 10);
2329 if (vmax <= 0 || vmax <= vmin)
2330 return;
2331 if (!(p = strsep(&spec, ";")) || !*p)
2332 return;
2333 hmin = 1000 * simple_strtoul(p, NULL, 10);
2334 if (hmin <= 0)
2335 return;
2336 if (!(p = strsep(&spec, "")) || !*p)
2337 return;
2338 hmax = 1000 * simple_strtoul(p, NULL, 10);
2339 if (hmax <= 0 || hmax <= hmin)
2340 return;
2341
2342 amifb_hfmin = hmin;
2343 amifb_hfmax = hmax;
2344 amifb_vfmin = vmin;
2345 amifb_vfmax = vmax;
2346 }
2347
2348 static int __init amifb_setup(char *options)
2349 {
2350 char *this_opt;
2351
2352 if (!options || !*options)
2353 return 0;
2354
2355 while ((this_opt = strsep(&options, ",")) != NULL) {
2356 if (!*this_opt)
2357 continue;
2358 if (!strcmp(this_opt, "inverse")) {
2359 fb_invert_cmaps();
2360 } else if (!strcmp(this_opt, "ilbm"))
2361 amifb_ilbm = 1;
2362 else if (!strncmp(this_opt, "monitorcap:", 11))
2363 amifb_setup_mcap(this_opt + 11);
2364 else if (!strncmp(this_opt, "fstart:", 7))
2365 min_fstrt = simple_strtoul(this_opt + 7, NULL, 0);
2366 else
2367 mode_option = this_opt;
2368 }
2369
2370 if (min_fstrt < 48)
2371 min_fstrt = 48;
2372
2373 return 0;
2374 }
2375 #endif
2376
2377 static int amifb_check_var(struct fb_var_screeninfo *var,
2378 struct fb_info *info)
2379 {
2380 int err;
2381 struct amifb_par par;
2382
2383 /* Validate wanted screen parameters */
2384 err = ami_decode_var(var, &par, info);
2385 if (err)
2386 return err;
2387
2388 /* Encode (possibly rounded) screen parameters */
2389 ami_encode_var(var, &par);
2390 return 0;
2391 }
2392
2393
2394 static int amifb_set_par(struct fb_info *info)
2395 {
2396 struct amifb_par *par = info->par;
2397 int error;
2398
2399 do_vmode_pan = 0;
2400 do_vmode_full = 0;
2401
2402 /* Decode wanted screen parameters */
2403 error = ami_decode_var(&info->var, par, info);
2404 if (error)
2405 return error;
2406
2407 /* Set new videomode */
2408 ami_build_copper(info);
2409
2410 /* Set VBlank trigger */
2411 do_vmode_full = 1;
2412
2413 /* Update fix for new screen parameters */
2414 if (par->bpp == 1) {
2415 info->fix.type = FB_TYPE_PACKED_PIXELS;
2416 info->fix.type_aux = 0;
2417 } else if (amifb_ilbm) {
2418 info->fix.type = FB_TYPE_INTERLEAVED_PLANES;
2419 info->fix.type_aux = par->next_line;
2420 } else {
2421 info->fix.type = FB_TYPE_PLANES;
2422 info->fix.type_aux = 0;
2423 }
2424 info->fix.line_length = div8(upx(16 << maxfmode, par->vxres));
2425
2426 if (par->vmode & FB_VMODE_YWRAP) {
2427 info->fix.ywrapstep = 1;
2428 info->fix.xpanstep = 0;
2429 info->fix.ypanstep = 0;
2430 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YWRAP |
2431 FBINFO_READS_FAST; /* override SCROLL_REDRAW */
2432 } else {
2433 info->fix.ywrapstep = 0;
2434 if (par->vmode & FB_VMODE_SMOOTH_XPAN)
2435 info->fix.xpanstep = 1;
2436 else
2437 info->fix.xpanstep = 16 << maxfmode;
2438 info->fix.ypanstep = 1;
2439 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
2440 }
2441 return 0;
2442 }
2443
2444
2445 /*
2446 * Set a single color register. The values supplied are already
2447 * rounded down to the hardware's capabilities (according to the
2448 * entries in the var structure). Return != 0 for invalid regno.
2449 */
2450
2451 static int amifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
2452 u_int transp, struct fb_info *info)
2453 {
2454 const struct amifb_par *par = info->par;
2455
2456 if (IS_AGA) {
2457 if (regno > 255)
2458 return 1;
2459 } else if (par->bplcon0 & BPC0_SHRES) {
2460 if (regno > 3)
2461 return 1;
2462 } else {
2463 if (regno > 31)
2464 return 1;
2465 }
2466 red >>= 8;
2467 green >>= 8;
2468 blue >>= 8;
2469 if (!regno) {
2470 red0 = red;
2471 green0 = green;
2472 blue0 = blue;
2473 }
2474
2475 /*
2476 * Update the corresponding Hardware Color Register, unless it's Color
2477 * Register 0 and the screen is blanked.
2478 *
2479 * VBlank is switched off to protect bplcon3 or ecs_palette[] from
2480 * being changed by ami_do_blank() during the VBlank.
2481 */
2482
2483 if (regno || !is_blanked) {
2484 #if defined(CONFIG_FB_AMIGA_AGA)
2485 if (IS_AGA) {
2486 u_short bplcon3 = par->bplcon3;
2487 VBlankOff();
2488 custom.bplcon3 = bplcon3 | (regno << 8 & 0xe000);
2489 custom.color[regno & 31] = rgb2hw8_high(red, green,
2490 blue);
2491 custom.bplcon3 = bplcon3 | (regno << 8 & 0xe000) |
2492 BPC3_LOCT;
2493 custom.color[regno & 31] = rgb2hw8_low(red, green,
2494 blue);
2495 custom.bplcon3 = bplcon3;
2496 VBlankOn();
2497 } else
2498 #endif
2499 #if defined(CONFIG_FB_AMIGA_ECS)
2500 if (par->bplcon0 & BPC0_SHRES) {
2501 u_short color, mask;
2502 int i;
2503
2504 mask = 0x3333;
2505 color = rgb2hw2(red, green, blue);
2506 VBlankOff();
2507 for (i = regno + 12; i >= (int)regno; i -= 4)
2508 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
2509 mask <<= 2; color >>= 2;
2510 regno = down16(regno) + mul4(mod4(regno));
2511 for (i = regno + 3; i >= (int)regno; i--)
2512 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
2513 VBlankOn();
2514 } else
2515 #endif
2516 custom.color[regno] = rgb2hw4(red, green, blue);
2517 }
2518 return 0;
2519 }
2520
2521
2522 /*
2523 * Blank the display.
2524 */
2525
2526 static int amifb_blank(int blank, struct fb_info *info)
2527 {
2528 do_blank = blank ? blank : -1;
2529
2530 return 0;
2531 }
2532
2533
2534 /*
2535 * Pan or Wrap the Display
2536 *
2537 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
2538 */
2539
2540 static int amifb_pan_display(struct fb_var_screeninfo *var,
2541 struct fb_info *info)
2542 {
2543 if (var->vmode & FB_VMODE_YWRAP) {
2544 if (var->yoffset < 0 ||
2545 var->yoffset >= info->var.yres_virtual || var->xoffset)
2546 return -EINVAL;
2547 } else {
2548 /*
2549 * TODO: There will be problems when xpan!=1, so some columns
2550 * on the right side will never be seen
2551 */
2552 if (var->xoffset + info->var.xres >
2553 upx(16 << maxfmode, info->var.xres_virtual) ||
2554 var->yoffset + info->var.yres > info->var.yres_virtual)
2555 return -EINVAL;
2556 }
2557 ami_pan_var(var, info);
2558 info->var.xoffset = var->xoffset;
2559 info->var.yoffset = var->yoffset;
2560 if (var->vmode & FB_VMODE_YWRAP)
2561 info->var.vmode |= FB_VMODE_YWRAP;
2562 else
2563 info->var.vmode &= ~FB_VMODE_YWRAP;
2564 return 0;
2565 }
2566
2567
2568 #if BITS_PER_LONG == 32
2569 #define BYTES_PER_LONG 4
2570 #define SHIFT_PER_LONG 5
2571 #elif BITS_PER_LONG == 64
2572 #define BYTES_PER_LONG 8
2573 #define SHIFT_PER_LONG 6
2574 #else
2575 #define Please update me
2576 #endif
2577
2578
2579 /*
2580 * Compose two values, using a bitmask as decision value
2581 * This is equivalent to (a & mask) | (b & ~mask)
2582 */
2583
2584 static inline unsigned long comp(unsigned long a, unsigned long b,
2585 unsigned long mask)
2586 {
2587 return ((a ^ b) & mask) ^ b;
2588 }
2589
2590
2591 static inline unsigned long xor(unsigned long a, unsigned long b,
2592 unsigned long mask)
2593 {
2594 return (a & mask) ^ b;
2595 }
2596
2597
2598 /*
2599 * Unaligned forward bit copy using 32-bit or 64-bit memory accesses
2600 */
2601
2602 static void bitcpy(unsigned long *dst, int dst_idx, const unsigned long *src,
2603 int src_idx, u32 n)
2604 {
2605 unsigned long first, last;
2606 int shift = dst_idx - src_idx, left, right;
2607 unsigned long d0, d1;
2608 int m;
2609
2610 if (!n)
2611 return;
2612
2613 shift = dst_idx - src_idx;
2614 first = ~0UL >> dst_idx;
2615 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
2616
2617 if (!shift) {
2618 // Same alignment for source and dest
2619
2620 if (dst_idx + n <= BITS_PER_LONG) {
2621 // Single word
2622 if (last)
2623 first &= last;
2624 *dst = comp(*src, *dst, first);
2625 } else {
2626 // Multiple destination words
2627 // Leading bits
2628 if (first) {
2629 *dst = comp(*src, *dst, first);
2630 dst++;
2631 src++;
2632 n -= BITS_PER_LONG - dst_idx;
2633 }
2634
2635 // Main chunk
2636 n /= BITS_PER_LONG;
2637 while (n >= 8) {
2638 *dst++ = *src++;
2639 *dst++ = *src++;
2640 *dst++ = *src++;
2641 *dst++ = *src++;
2642 *dst++ = *src++;
2643 *dst++ = *src++;
2644 *dst++ = *src++;
2645 *dst++ = *src++;
2646 n -= 8;
2647 }
2648 while (n--)
2649 *dst++ = *src++;
2650
2651 // Trailing bits
2652 if (last)
2653 *dst = comp(*src, *dst, last);
2654 }
2655 } else {
2656 // Different alignment for source and dest
2657
2658 right = shift & (BITS_PER_LONG - 1);
2659 left = -shift & (BITS_PER_LONG - 1);
2660
2661 if (dst_idx + n <= BITS_PER_LONG) {
2662 // Single destination word
2663 if (last)
2664 first &= last;
2665 if (shift > 0) {
2666 // Single source word
2667 *dst = comp(*src >> right, *dst, first);
2668 } else if (src_idx + n <= BITS_PER_LONG) {
2669 // Single source word
2670 *dst = comp(*src << left, *dst, first);
2671 } else {
2672 // 2 source words
2673 d0 = *src++;
2674 d1 = *src;
2675 *dst = comp(d0 << left | d1 >> right, *dst,
2676 first);
2677 }
2678 } else {
2679 // Multiple destination words
2680 d0 = *src++;
2681 // Leading bits
2682 if (shift > 0) {
2683 // Single source word
2684 *dst = comp(d0 >> right, *dst, first);
2685 dst++;
2686 n -= BITS_PER_LONG - dst_idx;
2687 } else {
2688 // 2 source words
2689 d1 = *src++;
2690 *dst = comp(d0 << left | d1 >> right, *dst,
2691 first);
2692 d0 = d1;
2693 dst++;
2694 n -= BITS_PER_LONG - dst_idx;
2695 }
2696
2697 // Main chunk
2698 m = n % BITS_PER_LONG;
2699 n /= BITS_PER_LONG;
2700 while (n >= 4) {
2701 d1 = *src++;
2702 *dst++ = d0 << left | d1 >> right;
2703 d0 = d1;
2704 d1 = *src++;
2705 *dst++ = d0 << left | d1 >> right;
2706 d0 = d1;
2707 d1 = *src++;
2708 *dst++ = d0 << left | d1 >> right;
2709 d0 = d1;
2710 d1 = *src++;
2711 *dst++ = d0 << left | d1 >> right;
2712 d0 = d1;
2713 n -= 4;
2714 }
2715 while (n--) {
2716 d1 = *src++;
2717 *dst++ = d0 << left | d1 >> right;
2718 d0 = d1;
2719 }
2720
2721 // Trailing bits
2722 if (last) {
2723 if (m <= right) {
2724 // Single source word
2725 *dst = comp(d0 << left, *dst, last);
2726 } else {
2727 // 2 source words
2728 d1 = *src;
2729 *dst = comp(d0 << left | d1 >> right,
2730 *dst, last);
2731 }
2732 }
2733 }
2734 }
2735 }
2736
2737
2738 /*
2739 * Unaligned reverse bit copy using 32-bit or 64-bit memory accesses
2740 */
2741
2742 static void bitcpy_rev(unsigned long *dst, int dst_idx,
2743 const unsigned long *src, int src_idx, u32 n)
2744 {
2745 unsigned long first, last;
2746 int shift = dst_idx - src_idx, left, right;
2747 unsigned long d0, d1;
2748 int m;
2749
2750 if (!n)
2751 return;
2752
2753 dst += (n - 1) / BITS_PER_LONG;
2754 src += (n - 1) / BITS_PER_LONG;
2755 if ((n - 1) % BITS_PER_LONG) {
2756 dst_idx += (n - 1) % BITS_PER_LONG;
2757 dst += dst_idx >> SHIFT_PER_LONG;
2758 dst_idx &= BITS_PER_LONG - 1;
2759 src_idx += (n - 1) % BITS_PER_LONG;
2760 src += src_idx >> SHIFT_PER_LONG;
2761 src_idx &= BITS_PER_LONG - 1;
2762 }
2763
2764 shift = dst_idx - src_idx;
2765 first = ~0UL << (BITS_PER_LONG - 1 - dst_idx);
2766 last = ~(~0UL << (BITS_PER_LONG - 1 - ((dst_idx - n) % BITS_PER_LONG)));
2767
2768 if (!shift) {
2769 // Same alignment for source and dest
2770
2771 if ((unsigned long)dst_idx + 1 >= n) {
2772 // Single word
2773 if (last)
2774 first &= last;
2775 *dst = comp(*src, *dst, first);
2776 } else {
2777 // Multiple destination words
2778 // Leading bits
2779 if (first) {
2780 *dst = comp(*src, *dst, first);
2781 dst--;
2782 src--;
2783 n -= dst_idx + 1;
2784 }
2785
2786 // Main chunk
2787 n /= BITS_PER_LONG;
2788 while (n >= 8) {
2789 *dst-- = *src--;
2790 *dst-- = *src--;
2791 *dst-- = *src--;
2792 *dst-- = *src--;
2793 *dst-- = *src--;
2794 *dst-- = *src--;
2795 *dst-- = *src--;
2796 *dst-- = *src--;
2797 n -= 8;
2798 }
2799 while (n--)
2800 *dst-- = *src--;
2801
2802 // Trailing bits
2803 if (last)
2804 *dst = comp(*src, *dst, last);
2805 }
2806 } else {
2807 // Different alignment for source and dest
2808
2809 right = shift & (BITS_PER_LONG - 1);
2810 left = -shift & (BITS_PER_LONG - 1);
2811
2812 if ((unsigned long)dst_idx + 1 >= n) {
2813 // Single destination word
2814 if (last)
2815 first &= last;
2816 if (shift < 0) {
2817 // Single source word
2818 *dst = comp(*src << left, *dst, first);
2819 } else if (1 + (unsigned long)src_idx >= n) {
2820 // Single source word
2821 *dst = comp(*src >> right, *dst, first);
2822 } else {
2823 // 2 source words
2824 d0 = *src--;
2825 d1 = *src;
2826 *dst = comp(d0 >> right | d1 << left, *dst,
2827 first);
2828 }
2829 } else {
2830 // Multiple destination words
2831 d0 = *src--;
2832 // Leading bits
2833 if (shift < 0) {
2834 // Single source word
2835 *dst = comp(d0 << left, *dst, first);
2836 dst--;
2837 n -= dst_idx + 1;
2838 } else {
2839 // 2 source words
2840 d1 = *src--;
2841 *dst = comp(d0 >> right | d1 << left, *dst,
2842 first);
2843 d0 = d1;
2844 dst--;
2845 n -= dst_idx + 1;
2846 }
2847
2848 // Main chunk
2849 m = n % BITS_PER_LONG;
2850 n /= BITS_PER_LONG;
2851 while (n >= 4) {
2852 d1 = *src--;
2853 *dst-- = d0 >> right | d1 << left;
2854 d0 = d1;
2855 d1 = *src--;
2856 *dst-- = d0 >> right | d1 << left;
2857 d0 = d1;
2858 d1 = *src--;
2859 *dst-- = d0 >> right | d1 << left;
2860 d0 = d1;
2861 d1 = *src--;
2862 *dst-- = d0 >> right | d1 << left;
2863 d0 = d1;
2864 n -= 4;
2865 }
2866 while (n--) {
2867 d1 = *src--;
2868 *dst-- = d0 >> right | d1 << left;
2869 d0 = d1;
2870 }
2871
2872 // Trailing bits
2873 if (last) {
2874 if (m <= left) {
2875 // Single source word
2876 *dst = comp(d0 >> right, *dst, last);
2877 } else {
2878 // 2 source words
2879 d1 = *src;
2880 *dst = comp(d0 >> right | d1 << left,
2881 *dst, last);
2882 }
2883 }
2884 }
2885 }
2886 }
2887
2888
2889 /*
2890 * Unaligned forward inverting bit copy using 32-bit or 64-bit memory
2891 * accesses
2892 */
2893
2894 static void bitcpy_not(unsigned long *dst, int dst_idx,
2895 const unsigned long *src, int src_idx, u32 n)
2896 {
2897 unsigned long first, last;
2898 int shift = dst_idx - src_idx, left, right;
2899 unsigned long d0, d1;
2900 int m;
2901
2902 if (!n)
2903 return;
2904
2905 shift = dst_idx - src_idx;
2906 first = ~0UL >> dst_idx;
2907 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
2908
2909 if (!shift) {
2910 // Same alignment for source and dest
2911
2912 if (dst_idx + n <= BITS_PER_LONG) {
2913 // Single word
2914 if (last)
2915 first &= last;
2916 *dst = comp(~*src, *dst, first);
2917 } else {
2918 // Multiple destination words
2919 // Leading bits
2920 if (first) {
2921 *dst = comp(~*src, *dst, first);
2922 dst++;
2923 src++;
2924 n -= BITS_PER_LONG - dst_idx;
2925 }
2926
2927 // Main chunk
2928 n /= BITS_PER_LONG;
2929 while (n >= 8) {
2930 *dst++ = ~*src++;
2931 *dst++ = ~*src++;
2932 *dst++ = ~*src++;
2933 *dst++ = ~*src++;
2934 *dst++ = ~*src++;
2935 *dst++ = ~*src++;
2936 *dst++ = ~*src++;
2937 *dst++ = ~*src++;
2938 n -= 8;
2939 }
2940 while (n--)
2941 *dst++ = ~*src++;
2942
2943 // Trailing bits
2944 if (last)
2945 *dst = comp(~*src, *dst, last);
2946 }
2947 } else {
2948 // Different alignment for source and dest
2949
2950 right = shift & (BITS_PER_LONG - 1);
2951 left = -shift & (BITS_PER_LONG - 1);
2952
2953 if (dst_idx + n <= BITS_PER_LONG) {
2954 // Single destination word
2955 if (last)
2956 first &= last;
2957 if (shift > 0) {
2958 // Single source word
2959 *dst = comp(~*src >> right, *dst, first);
2960 } else if (src_idx + n <= BITS_PER_LONG) {
2961 // Single source word
2962 *dst = comp(~*src << left, *dst, first);
2963 } else {
2964 // 2 source words
2965 d0 = ~*src++;
2966 d1 = ~*src;
2967 *dst = comp(d0 << left | d1 >> right, *dst,
2968 first);
2969 }
2970 } else {
2971 // Multiple destination words
2972 d0 = ~*src++;
2973 // Leading bits
2974 if (shift > 0) {
2975 // Single source word
2976 *dst = comp(d0 >> right, *dst, first);
2977 dst++;
2978 n -= BITS_PER_LONG - dst_idx;
2979 } else {
2980 // 2 source words
2981 d1 = ~*src++;
2982 *dst = comp(d0 << left | d1 >> right, *dst,
2983 first);
2984 d0 = d1;
2985 dst++;
2986 n -= BITS_PER_LONG - dst_idx;
2987 }
2988
2989 // Main chunk
2990 m = n % BITS_PER_LONG;
2991 n /= BITS_PER_LONG;
2992 while (n >= 4) {
2993 d1 = ~*src++;
2994 *dst++ = d0 << left | d1 >> right;
2995 d0 = d1;
2996 d1 = ~*src++;
2997 *dst++ = d0 << left | d1 >> right;
2998 d0 = d1;
2999 d1 = ~*src++;
3000 *dst++ = d0 << left | d1 >> right;
3001 d0 = d1;
3002 d1 = ~*src++;
3003 *dst++ = d0 << left | d1 >> right;
3004 d0 = d1;
3005 n -= 4;
3006 }
3007 while (n--) {
3008 d1 = ~*src++;
3009 *dst++ = d0 << left | d1 >> right;
3010 d0 = d1;
3011 }
3012
3013 // Trailing bits
3014 if (last) {
3015 if (m <= right) {
3016 // Single source word
3017 *dst = comp(d0 << left, *dst, last);
3018 } else {
3019 // 2 source words
3020 d1 = ~*src;
3021 *dst = comp(d0 << left | d1 >> right,
3022 *dst, last);
3023 }
3024 }
3025 }
3026 }
3027 }
3028
3029
3030 /*
3031 * Unaligned 32-bit pattern fill using 32/64-bit memory accesses
3032 */
3033
3034 static void bitfill32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
3035 {
3036 unsigned long val = pat;
3037 unsigned long first, last;
3038
3039 if (!n)
3040 return;
3041
3042 #if BITS_PER_LONG == 64
3043 val |= val << 32;
3044 #endif
3045
3046 first = ~0UL >> dst_idx;
3047 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
3048
3049 if (dst_idx + n <= BITS_PER_LONG) {
3050 // Single word
3051 if (last)
3052 first &= last;
3053 *dst = comp(val, *dst, first);
3054 } else {
3055 // Multiple destination words
3056 // Leading bits
3057 if (first) {
3058 *dst = comp(val, *dst, first);
3059 dst++;
3060 n -= BITS_PER_LONG - dst_idx;
3061 }
3062
3063 // Main chunk
3064 n /= BITS_PER_LONG;
3065 while (n >= 8) {
3066 *dst++ = val;
3067 *dst++ = val;
3068 *dst++ = val;
3069 *dst++ = val;
3070 *dst++ = val;
3071 *dst++ = val;
3072 *dst++ = val;
3073 *dst++ = val;
3074 n -= 8;
3075 }
3076 while (n--)
3077 *dst++ = val;
3078
3079 // Trailing bits
3080 if (last)
3081 *dst = comp(val, *dst, last);
3082 }
3083 }
3084
3085
3086 /*
3087 * Unaligned 32-bit pattern xor using 32/64-bit memory accesses
3088 */
3089
3090 static void bitxor32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
3091 {
3092 unsigned long val = pat;
3093 unsigned long first, last;
3094
3095 if (!n)
3096 return;
3097
3098 #if BITS_PER_LONG == 64
3099 val |= val << 32;
3100 #endif
3101
3102 first = ~0UL >> dst_idx;
3103 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
3104
3105 if (dst_idx + n <= BITS_PER_LONG) {
3106 // Single word
3107 if (last)
3108 first &= last;
3109 *dst = xor(val, *dst, first);
3110 } else {
3111 // Multiple destination words
3112 // Leading bits
3113 if (first) {
3114 *dst = xor(val, *dst, first);
3115 dst++;
3116 n -= BITS_PER_LONG - dst_idx;
3117 }
3118
3119 // Main chunk
3120 n /= BITS_PER_LONG;
3121 while (n >= 4) {
3122 *dst++ ^= val;
3123 *dst++ ^= val;
3124 *dst++ ^= val;
3125 *dst++ ^= val;
3126 n -= 4;
3127 }
3128 while (n--)
3129 *dst++ ^= val;
3130
3131 // Trailing bits
3132 if (last)
3133 *dst = xor(val, *dst, last);
3134 }
3135 }
3136
3137 static inline void fill_one_line(int bpp, unsigned long next_plane,
3138 unsigned long *dst, int dst_idx, u32 n,
3139 u32 color)
3140 {
3141 while (1) {
3142 dst += dst_idx >> SHIFT_PER_LONG;
3143 dst_idx &= (BITS_PER_LONG - 1);
3144 bitfill32(dst, dst_idx, color & 1 ? ~0 : 0, n);
3145 if (!--bpp)
3146 break;
3147 color >>= 1;
3148 dst_idx += next_plane * 8;
3149 }
3150 }
3151
3152 static inline void xor_one_line(int bpp, unsigned long next_plane,
3153 unsigned long *dst, int dst_idx, u32 n,
3154 u32 color)
3155 {
3156 while (color) {
3157 dst += dst_idx >> SHIFT_PER_LONG;
3158 dst_idx &= (BITS_PER_LONG - 1);
3159 bitxor32(dst, dst_idx, color & 1 ? ~0 : 0, n);
3160 if (!--bpp)
3161 break;
3162 color >>= 1;
3163 dst_idx += next_plane * 8;
3164 }
3165 }
3166
3167
3168 static void amifb_fillrect(struct fb_info *info,
3169 const struct fb_fillrect *rect)
3170 {
3171 struct amifb_par *par = info->par;
3172 int dst_idx, x2, y2;
3173 unsigned long *dst;
3174 u32 width, height;
3175
3176 if (!rect->width || !rect->height)
3177 return;
3178
3179 /*
3180 * We could use hardware clipping but on many cards you get around
3181 * hardware clipping by writing to framebuffer directly.
3182 * */
3183 x2 = rect->dx + rect->width;
3184 y2 = rect->dy + rect->height;
3185 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
3186 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
3187 width = x2 - rect->dx;
3188 height = y2 - rect->dy;
3189
3190 dst = (unsigned long *)
3191 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1));
3192 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8;
3193 dst_idx += rect->dy * par->next_line * 8 + rect->dx;
3194 while (height--) {
3195 switch (rect->rop) {
3196 case ROP_COPY:
3197 fill_one_line(info->var.bits_per_pixel,
3198 par->next_plane, dst, dst_idx, width,
3199 rect->color);
3200 break;
3201
3202 case ROP_XOR:
3203 xor_one_line(info->var.bits_per_pixel, par->next_plane,
3204 dst, dst_idx, width, rect->color);
3205 break;
3206 }
3207 dst_idx += par->next_line * 8;
3208 }
3209 }
3210
3211 static inline void copy_one_line(int bpp, unsigned long next_plane,
3212 unsigned long *dst, int dst_idx,
3213 unsigned long *src, int src_idx, u32 n)
3214 {
3215 while (1) {
3216 dst += dst_idx >> SHIFT_PER_LONG;
3217 dst_idx &= (BITS_PER_LONG - 1);
3218 src += src_idx >> SHIFT_PER_LONG;
3219 src_idx &= (BITS_PER_LONG - 1);
3220 bitcpy(dst, dst_idx, src, src_idx, n);
3221 if (!--bpp)
3222 break;
3223 dst_idx += next_plane * 8;
3224 src_idx += next_plane * 8;
3225 }
3226 }
3227
3228 static inline void copy_one_line_rev(int bpp, unsigned long next_plane,
3229 unsigned long *dst, int dst_idx,
3230 unsigned long *src, int src_idx, u32 n)
3231 {
3232 while (1) {
3233 dst += dst_idx >> SHIFT_PER_LONG;
3234 dst_idx &= (BITS_PER_LONG - 1);
3235 src += src_idx >> SHIFT_PER_LONG;
3236 src_idx &= (BITS_PER_LONG - 1);
3237 bitcpy_rev(dst, dst_idx, src, src_idx, n);
3238 if (!--bpp)
3239 break;
3240 dst_idx += next_plane * 8;
3241 src_idx += next_plane * 8;
3242 }
3243 }
3244
3245
3246 static void amifb_copyarea(struct fb_info *info,
3247 const struct fb_copyarea *area)
3248 {
3249 struct amifb_par *par = info->par;
3250 int x2, y2;
3251 u32 dx, dy, sx, sy, width, height;
3252 unsigned long *dst, *src;
3253 int dst_idx, src_idx;
3254 int rev_copy = 0;
3255
3256 /* clip the destination */
3257 x2 = area->dx + area->width;
3258 y2 = area->dy + area->height;
3259 dx = area->dx > 0 ? area->dx : 0;
3260 dy = area->dy > 0 ? area->dy : 0;
3261 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
3262 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
3263 width = x2 - dx;
3264 height = y2 - dy;
3265
3266 if (area->sx + dx < area->dx || area->sy + dy < area->dy)
3267 return;
3268
3269 /* update sx,sy */
3270 sx = area->sx + (dx - area->dx);
3271 sy = area->sy + (dy - area->dy);
3272
3273 /* the source must be completely inside the virtual screen */
3274 if (sx + width > info->var.xres_virtual ||
3275 sy + height > info->var.yres_virtual)
3276 return;
3277
3278 if (dy > sy || (dy == sy && dx > sx)) {
3279 dy += height;
3280 sy += height;
3281 rev_copy = 1;
3282 }
3283 dst = (unsigned long *)
3284 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1));
3285 src = dst;
3286 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8;
3287 src_idx = dst_idx;
3288 dst_idx += dy * par->next_line * 8 + dx;
3289 src_idx += sy * par->next_line * 8 + sx;
3290 if (rev_copy) {
3291 while (height--) {
3292 dst_idx -= par->next_line * 8;
3293 src_idx -= par->next_line * 8;
3294 copy_one_line_rev(info->var.bits_per_pixel,
3295 par->next_plane, dst, dst_idx, src,
3296 src_idx, width);
3297 }
3298 } else {
3299 while (height--) {
3300 copy_one_line(info->var.bits_per_pixel,
3301 par->next_plane, dst, dst_idx, src,
3302 src_idx, width);
3303 dst_idx += par->next_line * 8;
3304 src_idx += par->next_line * 8;
3305 }
3306 }
3307 }
3308
3309
3310 static inline void expand_one_line(int bpp, unsigned long next_plane,
3311 unsigned long *dst, int dst_idx, u32 n,
3312 const u8 *data, u32 bgcolor, u32 fgcolor)
3313 {
3314 const unsigned long *src;
3315 int src_idx;
3316
3317 while (1) {
3318 dst += dst_idx >> SHIFT_PER_LONG;
3319 dst_idx &= (BITS_PER_LONG - 1);
3320 if ((bgcolor ^ fgcolor) & 1) {
3321 src = (unsigned long *)
3322 ((unsigned long)data & ~(BYTES_PER_LONG - 1));
3323 src_idx = ((unsigned long)data & (BYTES_PER_LONG - 1)) * 8;
3324 if (fgcolor & 1)
3325 bitcpy(dst, dst_idx, src, src_idx, n);
3326 else
3327 bitcpy_not(dst, dst_idx, src, src_idx, n);
3328 /* set or clear */
3329 } else
3330 bitfill32(dst, dst_idx, fgcolor & 1 ? ~0 : 0, n);
3331 if (!--bpp)
3332 break;
3333 bgcolor >>= 1;
3334 fgcolor >>= 1;
3335 dst_idx += next_plane * 8;
3336 }
3337 }
3338
3339
3340 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
3341 {
3342 struct amifb_par *par = info->par;
3343 int x2, y2;
3344 unsigned long *dst;
3345 int dst_idx;
3346 const char *src;
3347 u32 dx, dy, width, height, pitch;
3348
3349 /*
3350 * We could use hardware clipping but on many cards you get around
3351 * hardware clipping by writing to framebuffer directly like we are
3352 * doing here.
3353 */
3354 x2 = image->dx + image->width;
3355 y2 = image->dy + image->height;
3356 dx = image->dx;
3357 dy = image->dy;
3358 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
3359 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
3360 width = x2 - dx;
3361 height = y2 - dy;
3362
3363 if (image->depth == 1) {
3364 dst = (unsigned long *)
3365 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1));
3366 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8;
3367 dst_idx += dy * par->next_line * 8 + dx;
3368 src = image->data;
3369 pitch = (image->width + 7) / 8;
3370 while (height--) {
3371 expand_one_line(info->var.bits_per_pixel,
3372 par->next_plane, dst, dst_idx, width,
3373 src, image->bg_color,
3374 image->fg_color);
3375 dst_idx += par->next_line * 8;
3376 src += pitch;
3377 }
3378 } else {
3379 c2p_planar(info->screen_base, image->data, dx, dy, width,
3380 height, par->next_line, par->next_plane,
3381 image->width, info->var.bits_per_pixel);
3382 }
3383 }
3384
3385
3386 /*
3387 * Amiga Frame Buffer Specific ioctls
3388 */
3389
3390 static int amifb_ioctl(struct fb_info *info,
3391 unsigned int cmd, unsigned long arg)
3392 {
3393 union {
3394 struct fb_fix_cursorinfo fix;
3395 struct fb_var_cursorinfo var;
3396 struct fb_cursorstate state;
3397 } crsr;
3398 void __user *argp = (void __user *)arg;
3399 int i;
3400
3401 switch (cmd) {
3402 case FBIOGET_FCURSORINFO:
3403 i = ami_get_fix_cursorinfo(&crsr.fix, info->par);
3404 if (i)
3405 return i;
3406 return copy_to_user(argp, &crsr.fix,
3407 sizeof(crsr.fix)) ? -EFAULT : 0;
3408
3409 case FBIOGET_VCURSORINFO:
3410 i = ami_get_var_cursorinfo(&crsr.var,
3411 ((struct fb_var_cursorinfo __user *)arg)->data,
3412 info->par);
3413 if (i)
3414 return i;
3415 return copy_to_user(argp, &crsr.var,
3416 sizeof(crsr.var)) ? -EFAULT : 0;
3417
3418 case FBIOPUT_VCURSORINFO:
3419 if (copy_from_user(&crsr.var, argp, sizeof(crsr.var)))
3420 return -EFAULT;
3421 return ami_set_var_cursorinfo(&crsr.var,
3422 ((struct fb_var_cursorinfo __user *)arg)->data,
3423 info->par);
3424
3425 case FBIOGET_CURSORSTATE:
3426 i = ami_get_cursorstate(&crsr.state, info->par);
3427 if (i)
3428 return i;
3429 return copy_to_user(argp, &crsr.state,
3430 sizeof(crsr.state)) ? -EFAULT : 0;
3431
3432 case FBIOPUT_CURSORSTATE:
3433 if (copy_from_user(&crsr.state, argp, sizeof(crsr.state)))
3434 return -EFAULT;
3435 return ami_set_cursorstate(&crsr.state, info->par);
3436 }
3437 return -EINVAL;
3438 }
3439
3440
3441 /*
3442 * Flash the cursor (called by VBlank interrupt)
3443 */
3444
3445 static int flash_cursor(void)
3446 {
3447 static int cursorcount = 1;
3448
3449 if (cursormode == FB_CURSOR_FLASH) {
3450 if (!--cursorcount) {
3451 cursorstate = -cursorstate;
3452 cursorcount = cursorrate;
3453 if (!is_blanked)
3454 return 1;
3455 }
3456 }
3457 return 0;
3458 }
3459
3460 /*
3461 * VBlank Display Interrupt
3462 */
3463
3464 static irqreturn_t amifb_interrupt(int irq, void *dev_id)
3465 {
3466 struct amifb_par *par = dev_id;
3467
3468 if (do_vmode_pan || do_vmode_full)
3469 ami_update_display(par);
3470
3471 if (do_vmode_full)
3472 ami_init_display(par);
3473
3474 if (do_vmode_pan) {
3475 flash_cursor();
3476 ami_rebuild_copper(par);
3477 do_cursor = do_vmode_pan = 0;
3478 } else if (do_cursor) {
3479 flash_cursor();
3480 ami_set_sprite(par);
3481 do_cursor = 0;
3482 } else {
3483 if (flash_cursor())
3484 ami_set_sprite(par);
3485 }
3486
3487 if (do_blank) {
3488 ami_do_blank(par);
3489 do_blank = 0;
3490 }
3491
3492 if (do_vmode_full) {
3493 ami_reinit_copper(par);
3494 do_vmode_full = 0;
3495 }
3496 return IRQ_HANDLED;
3497 }
3498
3499
3500 static const struct fb_ops amifb_ops = {
3501 .owner = THIS_MODULE,
3502 .fb_check_var = amifb_check_var,
3503 .fb_set_par = amifb_set_par,
3504 .fb_setcolreg = amifb_setcolreg,
3505 .fb_blank = amifb_blank,
3506 .fb_pan_display = amifb_pan_display,
3507 .fb_fillrect = amifb_fillrect,
3508 .fb_copyarea = amifb_copyarea,
3509 .fb_imageblit = amifb_imageblit,
3510 .fb_ioctl = amifb_ioctl,
3511 };
3512
3513
3514 /*
3515 * Allocate, Clear and Align a Block of Chip Memory
3516 */
3517
3518 static void *aligned_chipptr;
3519
3520 static inline u_long __init chipalloc(u_long size)
3521 {
3522 aligned_chipptr = amiga_chip_alloc(size, "amifb [RAM]");
3523 if (!aligned_chipptr) {
3524 pr_err("amifb: No Chip RAM for frame buffer");
3525 return 0;
3526 }
3527 memset(aligned_chipptr, 0, size);
3528 return (u_long)aligned_chipptr;
3529 }
3530
3531 static inline void chipfree(void)
3532 {
3533 if (aligned_chipptr)
3534 amiga_chip_free(aligned_chipptr);
3535 }
3536
3537
3538 /*
3539 * Initialisation
3540 */
3541
3542 static int __init amifb_probe(struct platform_device *pdev)
3543 {
3544 struct fb_info *info;
3545 int tag, i, err = 0;
3546 u_long chipptr;
3547 u_int defmode;
3548
3549 #ifndef MODULE
3550 char *option = NULL;
3551
3552 if (fb_get_options("amifb", &option)) {
3553 amifb_video_off();
3554 return -ENODEV;
3555 }
3556 amifb_setup(option);
3557 #endif
3558 custom.dmacon = DMAF_ALL | DMAF_MASTER;
3559
3560 info = framebuffer_alloc(sizeof(struct amifb_par), &pdev->dev);
3561 if (!info)
3562 return -ENOMEM;
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_wt(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 = 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 fb_info(info, "%s frame buffer device, using %dK of video memory\n",
3746 info->fix.id, info->fix.smem_len>>10);
3747
3748 return 0;
3749
3750 unset_drvdata:
3751 fb_dealloc_cmap(&info->cmap);
3752 free_irq:
3753 free_irq(IRQ_AMIGA_COPPER, info->par);
3754 disable_dma:
3755 custom.dmacon = DMAF_ALL | DMAF_MASTER;
3756 if (videomemory)
3757 iounmap((void *)videomemory);
3758 chipfree();
3759 release:
3760 framebuffer_release(info);
3761 return err;
3762 }
3763
3764
3765 static int __exit amifb_remove(struct platform_device *pdev)
3766 {
3767 struct fb_info *info = dev_get_drvdata(&pdev->dev);
3768
3769 unregister_framebuffer(info);
3770 fb_dealloc_cmap(&info->cmap);
3771 free_irq(IRQ_AMIGA_COPPER, info->par);
3772 custom.dmacon = DMAF_ALL | DMAF_MASTER;
3773 if (videomemory)
3774 iounmap((void *)videomemory);
3775 chipfree();
3776 framebuffer_release(info);
3777 amifb_video_off();
3778 return 0;
3779 }
3780
3781 static struct platform_driver amifb_driver = {
3782 .remove = __exit_p(amifb_remove),
3783 .driver = {
3784 .name = "amiga-video",
3785 },
3786 };
3787
3788 module_platform_driver_probe(amifb_driver, amifb_probe);
3789
3790 MODULE_LICENSE("GPL");
3791 MODULE_ALIAS("platform:amiga-video");
Linux with added FPC-III support