2 * linux/drivers/video/amifb.c -- Amiga builtin chipset frame buffer device
4 * Copyright (C) 1995-2003 Geert Uytterhoeven
6 * with work by Roman Zippel
9 * This file is based on the Atari frame buffer device (atafb.c):
11 * Copyright (C) 1994 Martin Schaller
14 * with work by Andreas Schwab
17 * and on the original Amiga console driver (amicon.c):
19 * Copyright (C) 1993 Hamish Macdonald
21 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
23 * with work by William Rucklidge (wjr@cs.cornell.edu)
25 * Jes Sorensen (jds@kom.auc.dk)
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
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
43 #include <linux/module.h>
44 #include <linux/kernel.h>
45 #include <linux/errno.h>
46 #include <linux/string.h>
48 #include <linux/tty.h>
49 #include <linux/slab.h>
50 #include <linux/delay.h>
51 #include <linux/config.h>
52 #include <linux/interrupt.h>
54 #include <linux/init.h>
55 #include <linux/ioport.h>
57 #include <asm/uaccess.h>
58 #include <asm/system.h>
60 #include <asm/amigahw.h>
61 #include <asm/amigaints.h>
62 #include <asm/setup.h>
69 #if !defined(CONFIG_FB_AMIGA_OCS) && !defined(CONFIG_FB_AMIGA_ECS) && !defined(CONFIG_FB_AMIGA_AGA)
70 #define CONFIG_FB_AMIGA_OCS /* define at least one fb driver, this will change later */
73 #if !defined(CONFIG_FB_AMIGA_OCS)
75 #elif defined(CONFIG_FB_AMIGA_ECS) || defined(CONFIG_FB_AMIGA_AGA)
76 # define IS_OCS (chipset == TAG_OCS)
78 # define CONFIG_FB_AMIGA_OCS_ONLY
82 #if !defined(CONFIG_FB_AMIGA_ECS)
84 #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_AGA)
85 # define IS_ECS (chipset == TAG_ECS)
87 # define CONFIG_FB_AMIGA_ECS_ONLY
91 #if !defined(CONFIG_FB_AMIGA_AGA)
93 #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_ECS)
94 # define IS_AGA (chipset == TAG_AGA)
96 # define CONFIG_FB_AMIGA_AGA_ONLY
101 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
103 # define DPRINTK(fmt, args...)
106 /*******************************************************************************
109 Generic video timings
110 ---------------------
112 Timings used by the frame buffer interface:
114 +----------+---------------------------------------------+----------+-------+
116 | | |upper_margin | | |
118 +----------###############################################----------+-------+
123 | left # | # right | hsync |
124 | margin # | xres # margin | len |
125 |<-------->#<---------------+--------------------------->#<-------->|<----->|
139 +----------###############################################----------+-------+
141 | | |lower_margin | | |
143 +----------+---------------------------------------------+----------+-------+
147 +----------+---------------------------------------------+----------+-------+
153 The Amiga native chipsets uses another timing scheme:
155 - hsstrt: Start of horizontal synchronization pulse
156 - hsstop: End of horizontal synchronization pulse
157 - htotal: Last value on the line (i.e. line length = htotal+1)
158 - vsstrt: Start of vertical synchronization pulse
159 - vsstop: End of vertical synchronization pulse
160 - vtotal: Last line value (i.e. number of lines = vtotal+1)
161 - hcenter: Start of vertical retrace for interlace
163 You can specify the blanking timings independently. Currently I just set
164 them equal to the respective synchronization values:
166 - hbstrt: Start of horizontal blank
167 - hbstop: End of horizontal blank
168 - vbstrt: Start of vertical blank
169 - vbstop: End of vertical blank
171 Horizontal values are in color clock cycles (280 ns), vertical values are in
174 (0, 0) is somewhere in the upper-left corner :-)
177 Amiga visible window definitions
178 --------------------------------
180 Currently I only have values for AGA, SHRES (28 MHz dotclock). Feel free to
181 make corrections and/or additions.
183 Within the above synchronization specifications, the visible window is
184 defined by the following parameters (actual register resolutions may be
185 different; all horizontal values are normalized with respect to the pixel
188 - diwstrt_h: Horizontal start of the visible window
189 - diwstop_h: Horizontal stop+1(*) of the visible window
190 - diwstrt_v: Vertical start of the visible window
191 - diwstop_v: Vertical stop of the visible window
192 - ddfstrt: Horizontal start of display DMA
193 - ddfstop: Horizontal stop of display DMA
194 - hscroll: Horizontal display output delay
198 - sprstrt_h: Horizontal start-4 of sprite
199 - sprstrt_v: Vertical start of sprite
201 (*) Even Commodore did it wrong in the AGA monitor drivers by not adding 1.
203 Horizontal values are in dotclock cycles (35 ns), vertical values are in
206 (0, 0) is somewhere in the upper-left corner :-)
209 Dependencies (AGA, SHRES (35 ns dotclock))
210 -------------------------------------------
212 Since there are much more parameters for the Amiga display than for the
213 frame buffer interface, there must be some dependencies among the Amiga
214 display parameters. Here's what I found out:
216 - ddfstrt and ddfstop are best aligned to 64 pixels.
217 - the chipset needs 64+4 horizontal pixels after the DMA start before the
218 first pixel is output, so diwstrt_h = ddfstrt+64+4 if you want to
219 display the first pixel on the line too. Increase diwstrt_h for virtual
221 - the display DMA always fetches 64 pixels at a time (fmode = 3).
222 - ddfstop is ddfstrt+#pixels-64.
223 - diwstop_h = diwstrt_h+xres+1. Because of the additional 1 this can be 1
225 - hscroll simply adds a delay to the display output. Smooth horizontal
226 panning needs an extra 64 pixels on the left to prefetch the pixels that
227 `fall off' on the left.
228 - if ddfstrt < 192, the sprite DMA cycles are all stolen by the bitplane
229 DMA, so it's best to make the DMA start as late as possible.
230 - you really don't want to make ddfstrt < 128, since this will steal DMA
231 cycles from the other DMA channels (audio, floppy and Chip RAM refresh).
232 - I make diwstop_h and diwstop_v as large as possible.
237 - all values are SHRES pixel (35ns)
239 table 1:fetchstart table 2:prefetch table 3:fetchsize
240 ------------------ ---------------- -----------------
241 Pixclock # SHRES|HIRES|LORES # SHRES|HIRES|LORES # SHRES|HIRES|LORES
242 -------------#------+-----+------#------+-----+------#------+-----+------
243 Bus width 1x # 16 | 32 | 64 # 16 | 32 | 64 # 64 | 64 | 64
244 Bus width 2x # 32 | 64 | 128 # 32 | 64 | 64 # 64 | 64 | 128
245 Bus width 4x # 64 | 128 | 256 # 64 | 64 | 64 # 64 | 128 | 256
247 - chipset needs 4 pixels before the first pixel is output
248 - ddfstrt must be aligned to fetchstart (table 1)
249 - chipset needs also prefetch (table 2) to get first pixel data, so
250 ddfstrt = ((diwstrt_h-4) & -fetchstart) - prefetch
251 - for horizontal panning decrease diwstrt_h
252 - the length of a fetchline must be aligned to fetchsize (table 3)
253 - if fetchstart is smaller than fetchsize, then ddfstrt can a little bit
254 moved to optimize use of dma (useful for OCS/ECS overscan displays)
255 - ddfstop is ddfstrt+ddfsize-fetchsize
256 - If C= didn't change anything for AGA, then at following positions the
257 dma bus is already used:
258 ddfstrt < 48 -> memory refresh
261 < 192 -> sprite 0 dma
262 < 416 -> sprite dma (32 per sprite)
263 - in accordance with the hardware reference manual a hardware stop is at
264 192, but AGA (ECS?) can go below this.
269 Since there are limits on the earliest start value for display DMA and the
270 display of sprites, I use the following policy on horizontal panning and
273 - if you want to start display DMA too early, you lose the ability to
274 do smooth horizontal panning (xpanstep 1 -> 64).
275 - if you want to go even further, you lose the hardware cursor too.
277 IMHO a hardware cursor is more important for X than horizontal scrolling,
278 so that's my motivation.
284 ami_decode_var() converts the frame buffer values to the Amiga values. It's
285 just a `straightforward' implementation of the above rules.
291 xres yres left right upper lower hsync vsync
292 ---- ---- ---- ----- ----- ----- ----- -----
293 80x25 720 400 27 45 35 12 108 2
294 80x30 720 480 27 45 30 9 108 2
296 These were taken from a XFree86 configuration file, recalculated for a 28 MHz
297 dotclock (Amigas don't have a 25 MHz dotclock) and converted to frame buffer
300 As a comparison, graphics/monitor.h suggests the following:
302 xres yres left right upper lower hsync vsync
303 ---- ---- ---- ----- ----- ----- ----- -----
305 VGA 640 480 52 112 24 19 112 - 2 +
306 VGA70 640 400 52 112 27 21 112 - 2 -
312 VSYNC HSYNC Vertical size Vertical total
313 ----- ----- ------------- --------------
314 + + Reserved Reserved
319 Source: CL-GD542X Technical Reference Manual, Cirrus Logic, Oct 1992
322 Broadcast video timings
323 -----------------------
325 According to the CCIR and RETMA specifications, we have the following values:
330 - a scanline is 64 µs long, of which 52.48 µs are visible. This is about
331 736 visible 70 ns pixels per line.
332 - we have 625 scanlines, of which 575 are visible (interlaced); after
333 rounding this becomes 576.
338 - a scanline is 63.5 µs long, of which 53.5 µs are visible. This is about
339 736 visible 70 ns pixels per line.
340 - we have 525 scanlines, of which 485 are visible (interlaced); after
341 rounding this becomes 484.
343 Thus if you want a PAL compatible display, you have to do the following:
345 - set the FB_SYNC_BROADCAST flag to indicate that standard broadcast
346 timings are to be used.
347 - make sure upper_margin+yres+lower_margin+vsync_len = 625 for an
348 interlaced, 312 for a non-interlaced and 156 for a doublescanned
350 - make sure left_margin+xres+right_margin+hsync_len = 1816 for a SHRES,
351 908 for a HIRES and 454 for a LORES display.
352 - the left visible part begins at 360 (SHRES; HIRES:180, LORES:90),
353 left_margin+2*hsync_len must be greater or equal.
354 - the upper visible part begins at 48 (interlaced; non-interlaced:24,
355 doublescanned:12), upper_margin+2*vsync_len must be greater or equal.
356 - ami_encode_var() calculates margins with a hsync of 5320 ns and a vsync
359 The settings for a NTSC compatible display are straightforward.
361 Note that in a strict sense the PAL and NTSC standards only define the
362 encoding of the color part (chrominance) of the video signal and don't say
363 anything about horizontal/vertical synchronization nor refresh rates.
368 *******************************************************************************/
372 * Custom Chipset Definitions
375 #define CUSTOM_OFS(fld) ((long)&((struct CUSTOM*)0)->fld)
378 * BPLCON0 -- Bitplane Control Register 0
381 #define BPC0_HIRES (0x8000)
382 #define BPC0_BPU2 (0x4000) /* Bit plane used count */
383 #define BPC0_BPU1 (0x2000)
384 #define BPC0_BPU0 (0x1000)
385 #define BPC0_HAM (0x0800) /* HAM mode */
386 #define BPC0_DPF (0x0400) /* Double playfield */
387 #define BPC0_COLOR (0x0200) /* Enable colorburst */
388 #define BPC0_GAUD (0x0100) /* Genlock audio enable */
389 #define BPC0_UHRES (0x0080) /* Ultrahi res enable */
390 #define BPC0_SHRES (0x0040) /* Super hi res mode */
391 #define BPC0_BYPASS (0x0020) /* Bypass LUT - AGA */
392 #define BPC0_BPU3 (0x0010) /* AGA */
393 #define BPC0_LPEN (0x0008) /* Light pen enable */
394 #define BPC0_LACE (0x0004) /* Interlace */
395 #define BPC0_ERSY (0x0002) /* External resync */
396 #define BPC0_ECSENA (0x0001) /* ECS enable */
399 * BPLCON2 -- Bitplane Control Register 2
402 #define BPC2_ZDBPSEL2 (0x4000) /* Bitplane to be used for ZD - AGA */
403 #define BPC2_ZDBPSEL1 (0x2000)
404 #define BPC2_ZDBPSEL0 (0x1000)
405 #define BPC2_ZDBPEN (0x0800) /* Enable ZD with ZDBPSELx - AGA */
406 #define BPC2_ZDCTEN (0x0400) /* Enable ZD with palette bit #31 - AGA */
407 #define BPC2_KILLEHB (0x0200) /* Kill EHB mode - AGA */
408 #define BPC2_RDRAM (0x0100) /* Color table accesses read, not write - AGA */
409 #define BPC2_SOGEN (0x0080) /* SOG output pin high - AGA */
410 #define BPC2_PF2PRI (0x0040) /* PF2 priority over PF1 */
411 #define BPC2_PF2P2 (0x0020) /* PF2 priority wrt sprites */
412 #define BPC2_PF2P1 (0x0010)
413 #define BPC2_PF2P0 (0x0008)
414 #define BPC2_PF1P2 (0x0004) /* ditto PF1 */
415 #define BPC2_PF1P1 (0x0002)
416 #define BPC2_PF1P0 (0x0001)
419 * BPLCON3 -- Bitplane Control Register 3 (AGA)
422 #define BPC3_BANK2 (0x8000) /* Bits to select color register bank */
423 #define BPC3_BANK1 (0x4000)
424 #define BPC3_BANK0 (0x2000)
425 #define BPC3_PF2OF2 (0x1000) /* Bits for color table offset when PF2 */
426 #define BPC3_PF2OF1 (0x0800)
427 #define BPC3_PF2OF0 (0x0400)
428 #define BPC3_LOCT (0x0200) /* Color register writes go to low bits */
429 #define BPC3_SPRES1 (0x0080) /* Sprite resolution bits */
430 #define BPC3_SPRES0 (0x0040)
431 #define BPC3_BRDRBLNK (0x0020) /* Border blanked? */
432 #define BPC3_BRDRTRAN (0x0010) /* Border transparent? */
433 #define BPC3_ZDCLKEN (0x0004) /* ZD pin is 14 MHz (HIRES) clock output */
434 #define BPC3_BRDRSPRT (0x0002) /* Sprites in border? */
435 #define BPC3_EXTBLKEN (0x0001) /* BLANK programmable */
438 * BPLCON4 -- Bitplane Control Register 4 (AGA)
441 #define BPC4_BPLAM7 (0x8000) /* bitplane color XOR field */
442 #define BPC4_BPLAM6 (0x4000)
443 #define BPC4_BPLAM5 (0x2000)
444 #define BPC4_BPLAM4 (0x1000)
445 #define BPC4_BPLAM3 (0x0800)
446 #define BPC4_BPLAM2 (0x0400)
447 #define BPC4_BPLAM1 (0x0200)
448 #define BPC4_BPLAM0 (0x0100)
449 #define BPC4_ESPRM7 (0x0080) /* 4 high bits for even sprite colors */
450 #define BPC4_ESPRM6 (0x0040)
451 #define BPC4_ESPRM5 (0x0020)
452 #define BPC4_ESPRM4 (0x0010)
453 #define BPC4_OSPRM7 (0x0008) /* 4 high bits for odd sprite colors */
454 #define BPC4_OSPRM6 (0x0004)
455 #define BPC4_OSPRM5 (0x0002)
456 #define BPC4_OSPRM4 (0x0001)
459 * BEAMCON0 -- Beam Control Register
462 #define BMC0_HARDDIS (0x4000) /* Disable hardware limits */
463 #define BMC0_LPENDIS (0x2000) /* Disable light pen latch */
464 #define BMC0_VARVBEN (0x1000) /* Enable variable vertical blank */
465 #define BMC0_LOLDIS (0x0800) /* Disable long/short line toggle */
466 #define BMC0_CSCBEN (0x0400) /* Composite sync/blank */
467 #define BMC0_VARVSYEN (0x0200) /* Enable variable vertical sync */
468 #define BMC0_VARHSYEN (0x0100) /* Enable variable horizontal sync */
469 #define BMC0_VARBEAMEN (0x0080) /* Enable variable beam counters */
470 #define BMC0_DUAL (0x0040) /* Enable alternate horizontal beam counter */
471 #define BMC0_PAL (0x0020) /* Set decodes for PAL */
472 #define BMC0_VARCSYEN (0x0010) /* Enable variable composite sync */
473 #define BMC0_BLANKEN (0x0008) /* Blank enable (no longer used on AGA) */
474 #define BMC0_CSYTRUE (0x0004) /* CSY polarity */
475 #define BMC0_VSYTRUE (0x0002) /* VSY polarity */
476 #define BMC0_HSYTRUE (0x0001) /* HSY polarity */
480 * FMODE -- Fetch Mode Control Register (AGA)
483 #define FMODE_SSCAN2 (0x8000) /* Sprite scan-doubling */
484 #define FMODE_BSCAN2 (0x4000) /* Use PF2 modulus every other line */
485 #define FMODE_SPAGEM (0x0008) /* Sprite page mode */
486 #define FMODE_SPR32 (0x0004) /* Sprite 32 bit fetch */
487 #define FMODE_BPAGEM (0x0002) /* Bitplane page mode */
488 #define FMODE_BPL32 (0x0001) /* Bitplane 32 bit fetch */
491 * Tags used to indicate a specific Pixel Clock
493 * clk_shift is the shift value to get the timings in 35 ns units
496 enum { TAG_SHRES, TAG_HIRES, TAG_LORES };
499 * Tags used to indicate the specific chipset
502 enum { TAG_OCS, TAG_ECS, TAG_AGA };
505 * Tags used to indicate the memory bandwidth
508 enum { TAG_FMODE_1, TAG_FMODE_2, TAG_FMODE_4 };
512 * Clock Definitions, Maximum Display Depth
514 * These depend on the E-Clock or the Chipset, so they are filled in
518 static u_long pixclock[3]; /* SHRES/HIRES/LORES: index = clk_shift */
519 static u_short maxdepth[3]; /* SHRES/HIRES/LORES: index = clk_shift */
520 static u_short maxfmode, chipset;
524 * Broadcast Video Timings
526 * Horizontal values are in 35 ns (SHRES) units
527 * Vertical values are in interlaced scanlines
530 #define PAL_DIWSTRT_H (360) /* PAL Window Limits */
531 #define PAL_DIWSTRT_V (48)
532 #define PAL_HTOTAL (1816)
533 #define PAL_VTOTAL (625)
535 #define NTSC_DIWSTRT_H (360) /* NTSC Window Limits */
536 #define NTSC_DIWSTRT_V (40)
537 #define NTSC_HTOTAL (1816)
538 #define NTSC_VTOTAL (525)
545 #define up2(v) (((v)+1) & -2)
546 #define down2(v) ((v) & -2)
547 #define div2(v) ((v)>>1)
548 #define mod2(v) ((v) & 1)
550 #define up4(v) (((v)+3) & -4)
551 #define down4(v) ((v) & -4)
552 #define mul4(v) ((v)<<2)
553 #define div4(v) ((v)>>2)
554 #define mod4(v) ((v) & 3)
556 #define up8(v) (((v)+7) & -8)
557 #define down8(v) ((v) & -8)
558 #define div8(v) ((v)>>3)
559 #define mod8(v) ((v) & 7)
561 #define up16(v) (((v)+15) & -16)
562 #define down16(v) ((v) & -16)
563 #define div16(v) ((v)>>4)
564 #define mod16(v) ((v) & 15)
566 #define up32(v) (((v)+31) & -32)
567 #define down32(v) ((v) & -32)
568 #define div32(v) ((v)>>5)
569 #define mod32(v) ((v) & 31)
571 #define up64(v) (((v)+63) & -64)
572 #define down64(v) ((v) & -64)
573 #define div64(v) ((v)>>6)
574 #define mod64(v) ((v) & 63)
576 #define upx(x,v) (((v)+(x)-1) & -(x))
577 #define downx(x,v) ((v) & -(x))
578 #define modx(x,v) ((v) & ((x)-1))
580 /* if x1 is not a constant, this macro won't make real sense :-) */
582 #define DIVUL(x1, x2) ({int res; asm("divul %1,%2,%3": "=d" (res): \
583 "d" (x2), "d" ((long)((x1)/0x100000000ULL)), "0" ((long)(x1))); res;})
585 /* We know a bit about the numbers, so we can do it this way */
586 #define DIVUL(x1, x2) ((((long)((unsigned long long)x1 >> 8) / x2) << 8) + \
587 ((((long)((unsigned long long)x1 >> 8) % x2) << 8) / x2))
590 #define highw(x) ((u_long)(x)>>16 & 0xffff)
591 #define loww(x) ((u_long)(x) & 0xffff)
593 #define VBlankOn() custom.intena = IF_SETCLR|IF_COPER
594 #define VBlankOff() custom.intena = IF_COPER
598 * Chip RAM we reserve for the Frame Buffer
600 * This defines the Maximum Virtual Screen Size
601 * (Setable per kernel options?)
604 #define VIDEOMEMSIZE_AGA_2M (1310720) /* AGA (2MB) : max 1280*1024*256 */
605 #define VIDEOMEMSIZE_AGA_1M (786432) /* AGA (1MB) : max 1024*768*256 */
606 #define VIDEOMEMSIZE_ECS_2M (655360) /* ECS (2MB) : max 1280*1024*16 */
607 #define VIDEOMEMSIZE_ECS_1M (393216) /* ECS (1MB) : max 1024*768*16 */
608 #define VIDEOMEMSIZE_OCS (262144) /* OCS : max ca. 800*600*16 */
610 #define SPRITEMEMSIZE (64*64/4) /* max 64*64*4 */
611 #define DUMMYSPRITEMEMSIZE (8)
612 static u_long spritememory;
614 #define CHIPRAM_SAFETY_LIMIT (16384)
616 static u_long videomemory;
619 * This is the earliest allowed start of fetching display data.
620 * Only if you really want no hardware cursor and audio,
621 * set this to 128, but let it better at 192
624 static u_long min_fstrt = 192;
626 #define assignchunk(name, type, ptr, size) \
628 (name) = (type)(ptr); \
634 * Copper Instructions
637 #define CMOVE(val, reg) (CUSTOM_OFS(reg)<<16 | (val))
638 #define CMOVE2(val, reg) ((CUSTOM_OFS(reg)+2)<<16 | (val))
639 #define CWAIT(x, y) (((y) & 0x1fe)<<23 | ((x) & 0x7f0)<<13 | 0x0001fffe)
640 #define CEND (0xfffffffe)
648 static struct copdisplay {
655 static u_short currentcop = 0;
658 * Hardware Cursor API Definitions
659 * These used to be in linux/fb.h, but were preliminary and used by
663 #define FBIOGET_FCURSORINFO 0x4607
664 #define FBIOGET_VCURSORINFO 0x4608
665 #define FBIOPUT_VCURSORINFO 0x4609
666 #define FBIOGET_CURSORSTATE 0x460A
667 #define FBIOPUT_CURSORSTATE 0x460B
670 struct fb_fix_cursorinfo {
671 __u16 crsr_width; /* width and height of the cursor in */
672 __u16 crsr_height; /* pixels (zero if no cursor) */
673 __u16 crsr_xsize; /* cursor size in display pixels */
675 __u16 crsr_color1; /* colormap entry for cursor color1 */
676 __u16 crsr_color2; /* colormap entry for cursor color2 */
679 struct fb_var_cursorinfo {
684 __u8 data[1]; /* field with [height][width] */
687 struct fb_cursorstate {
693 #define FB_CURSOR_OFF 0
694 #define FB_CURSOR_ON 1
695 #define FB_CURSOR_FLASH 2
702 static int cursorrate = 20; /* Number of frames/flash toggle */
703 static u_short cursorstate = -1;
704 static u_short cursormode = FB_CURSOR_OFF;
706 static u_short *lofsprite, *shfsprite, *dummysprite;
712 static struct amifb_par {
716 int xres; /* vmode */
717 int yres; /* vmode */
718 int vxres; /* vmode */
719 int vyres; /* vmode */
720 int xoffset; /* vmode */
721 int yoffset; /* vmode */
722 u_short bpp; /* vmode */
723 u_short clk_shift; /* vmode */
724 u_short line_shift; /* vmode */
725 int vmode; /* vmode */
726 u_short diwstrt_h; /* vmode */
727 u_short diwstop_h; /* vmode */
728 u_short diwstrt_v; /* vmode */
729 u_short diwstop_v; /* vmode */
730 u_long next_line; /* modulo for next line */
731 u_long next_plane; /* modulo for next plane */
736 short crsr_x; /* movecursor */
737 short crsr_y; /* movecursor */
745 /* OCS Hardware Registers */
747 u_long bplpt0; /* vmode, pan (Note: physical address) */
748 u_long bplpt0wrap; /* vmode, pan (Note: physical address) */
753 u_short bplcon0; /* vmode */
754 u_short bplcon1; /* vmode */
755 u_short htotal; /* vmode */
756 u_short vtotal; /* vmode */
758 /* Additional ECS Hardware Registers */
760 u_short bplcon3; /* vmode */
761 u_short beamcon0; /* vmode */
762 u_short hsstrt; /* vmode */
763 u_short hsstop; /* vmode */
764 u_short hbstrt; /* vmode */
765 u_short hbstop; /* vmode */
766 u_short vsstrt; /* vmode */
767 u_short vsstop; /* vmode */
768 u_short vbstrt; /* vmode */
769 u_short vbstop; /* vmode */
770 u_short hcenter; /* vmode */
772 /* Additional AGA Hardware Registers */
774 u_short fmode; /* vmode */
778 static struct fb_info fb_info = {
781 .visual = FB_VISUAL_PSEUDOCOLOR,
782 .accel = FB_ACCEL_AMIGABLITT
788 * Saved color entry 0 so we can restore it when unblanking
791 static u_char red0, green0, blue0;
794 #if defined(CONFIG_FB_AMIGA_ECS)
795 static u_short ecs_palette[32];
800 * Latches for Display Changes during VBlank
803 static u_short do_vmode_full = 0; /* Change the Video Mode */
804 static u_short do_vmode_pan = 0; /* Update the Video Mode */
805 static short do_blank = 0; /* (Un)Blank the Screen (±1) */
806 static u_short do_cursor = 0; /* Move the Cursor */
813 static u_short is_blanked = 0; /* Screen is Blanked */
814 static u_short is_lace = 0; /* Screen is laced */
817 * Predefined Video Modes
821 static struct fb_videomode ami_modedb[] __initdata = {
824 * AmigaOS Video Modes
826 * If you change these, make sure to update DEFMODE_* as well!
830 /* 640x200, 15 kHz, 60 Hz (NTSC) */
831 "ntsc", 60, 640, 200, TAG_HIRES, 106, 86, 44, 16, 76, 2,
832 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
834 /* 640x400, 15 kHz, 60 Hz interlaced (NTSC) */
835 "ntsc-lace", 60, 640, 400, TAG_HIRES, 106, 86, 88, 33, 76, 4,
836 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
838 /* 640x256, 15 kHz, 50 Hz (PAL) */
839 "pal", 50, 640, 256, TAG_HIRES, 106, 86, 40, 14, 76, 2,
840 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
842 /* 640x512, 15 kHz, 50 Hz interlaced (PAL) */
843 "pal-lace", 50, 640, 512, TAG_HIRES, 106, 86, 80, 29, 76, 4,
844 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
846 /* 640x480, 29 kHz, 57 Hz */
847 "multiscan", 57, 640, 480, TAG_SHRES, 96, 112, 29, 8, 72, 8,
848 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
850 /* 640x960, 29 kHz, 57 Hz interlaced */
851 "multiscan-lace", 57, 640, 960, TAG_SHRES, 96, 112, 58, 16, 72, 16,
852 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
854 /* 640x200, 15 kHz, 72 Hz */
855 "euro36", 72, 640, 200, TAG_HIRES, 92, 124, 6, 6, 52, 5,
856 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
858 /* 640x400, 15 kHz, 72 Hz interlaced */
859 "euro36-lace", 72, 640, 400, TAG_HIRES, 92, 124, 12, 12, 52, 10,
860 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
862 /* 640x400, 29 kHz, 68 Hz */
863 "euro72", 68, 640, 400, TAG_SHRES, 164, 92, 9, 9, 80, 8,
864 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
866 /* 640x800, 29 kHz, 68 Hz interlaced */
867 "euro72-lace", 68, 640, 800, TAG_SHRES, 164, 92, 18, 18, 80, 16,
868 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
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
874 /* 800x600, 23 kHz, 70 Hz interlaced */
875 "super72-lace", 70, 800, 600, TAG_SHRES, 212, 140, 20, 22, 80, 14,
876 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
878 /* 640x200, 27 kHz, 57 Hz doublescan */
879 "dblntsc", 57, 640, 200, TAG_SHRES, 196, 124, 18, 17, 80, 4,
880 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
882 /* 640x400, 27 kHz, 57 Hz */
883 "dblntsc-ff", 57, 640, 400, TAG_SHRES, 196, 124, 36, 35, 80, 7,
884 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
886 /* 640x800, 27 kHz, 57 Hz interlaced */
887 "dblntsc-lace", 57, 640, 800, TAG_SHRES, 196, 124, 72, 70, 80, 14,
888 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
890 /* 640x256, 27 kHz, 47 Hz doublescan */
891 "dblpal", 47, 640, 256, TAG_SHRES, 196, 124, 14, 13, 80, 4,
892 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
894 /* 640x512, 27 kHz, 47 Hz */
895 "dblpal-ff", 47, 640, 512, TAG_SHRES, 196, 124, 28, 27, 80, 7,
896 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
898 /* 640x1024, 27 kHz, 47 Hz interlaced */
899 "dblpal-lace", 47, 640, 1024, TAG_SHRES, 196, 124, 56, 54, 80, 14,
900 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
908 /* 640x480, 31 kHz, 60 Hz (VGA) */
909 "vga", 60, 640, 480, TAG_SHRES, 64, 96, 30, 9, 112, 2,
910 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
912 /* 640x400, 31 kHz, 70 Hz (VGA) */
913 "vga70", 70, 640, 400, TAG_SHRES, 64, 96, 35, 12, 112, 2,
914 FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
921 * These modes don't work yet because there's no A2024 driver.
925 /* 1024x800, 10 Hz */
926 "a2024-10", 10, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
927 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
929 /* 1024x800, 15 Hz */
930 "a2024-15", 15, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
931 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
936 #define NUM_TOTAL_MODES ARRAY_SIZE(ami_modedb)
938 static char *mode_option __initdata = NULL;
939 static int round_down_bpp = 1; /* for mode probing */
946 #define DEFMODE_PAL 2 /* "pal" for PAL OCS/ECS */
947 #define DEFMODE_NTSC 0 /* "ntsc" for NTSC OCS/ECS */
948 #define DEFMODE_AMBER_PAL 3 /* "pal-lace" for flicker fixed PAL (A3000) */
949 #define DEFMODE_AMBER_NTSC 1 /* "ntsc-lace" for flicker fixed NTSC (A3000) */
950 #define DEFMODE_AGA 19 /* "vga70" for AGA */
953 static int amifb_ilbm = 0; /* interleaved or normal bitplanes */
954 static int amifb_inverse = 0;
958 * Macros for the conversion from real world values to hardware register
961 * This helps us to keep our attention on the real stuff...
963 * Hardware limits for AGA:
965 * parameter min max step
966 * --------- --- ---- ----
988 * Horizontal values are in 35 ns (SHRES) pixels
989 * Vertical values are in half scanlines
992 /* bplcon1 (smooth scrolling) */
994 #define hscroll2hw(hscroll) \
995 (((hscroll)<<12 & 0x3000) | ((hscroll)<<8 & 0xc300) | \
996 ((hscroll)<<4 & 0x0c00) | ((hscroll)<<2 & 0x00f0) | ((hscroll)>>2 & 0x000f))
998 /* diwstrt/diwstop/diwhigh (visible display window) */
1000 #define diwstrt2hw(diwstrt_h, diwstrt_v) \
1001 (((diwstrt_v)<<7 & 0xff00) | ((diwstrt_h)>>2 & 0x00ff))
1002 #define diwstop2hw(diwstop_h, diwstop_v) \
1003 (((diwstop_v)<<7 & 0xff00) | ((diwstop_h)>>2 & 0x00ff))
1004 #define diwhigh2hw(diwstrt_h, diwstrt_v, diwstop_h, diwstop_v) \
1005 (((diwstop_h)<<3 & 0x2000) | ((diwstop_h)<<11 & 0x1800) | \
1006 ((diwstop_v)>>1 & 0x0700) | ((diwstrt_h)>>5 & 0x0020) | \
1007 ((diwstrt_h)<<3 & 0x0018) | ((diwstrt_v)>>9 & 0x0007))
1009 /* ddfstrt/ddfstop (display DMA) */
1011 #define ddfstrt2hw(ddfstrt) div8(ddfstrt)
1012 #define ddfstop2hw(ddfstop) div8(ddfstop)
1014 /* hsstrt/hsstop/htotal/vsstrt/vsstop/vtotal/hcenter (sync timings) */
1016 #define hsstrt2hw(hsstrt) (div8(hsstrt))
1017 #define hsstop2hw(hsstop) (div8(hsstop))
1018 #define htotal2hw(htotal) (div8(htotal)-1)
1019 #define vsstrt2hw(vsstrt) (div2(vsstrt))
1020 #define vsstop2hw(vsstop) (div2(vsstop))
1021 #define vtotal2hw(vtotal) (div2(vtotal)-1)
1022 #define hcenter2hw(htotal) (div8(htotal))
1024 /* hbstrt/hbstop/vbstrt/vbstop (blanking timings) */
1026 #define hbstrt2hw(hbstrt) (((hbstrt)<<8 & 0x0700) | ((hbstrt)>>3 & 0x00ff))
1027 #define hbstop2hw(hbstop) (((hbstop)<<8 & 0x0700) | ((hbstop)>>3 & 0x00ff))
1028 #define vbstrt2hw(vbstrt) (div2(vbstrt))
1029 #define vbstop2hw(vbstop) (div2(vbstop))
1033 #define rgb2hw8_high(red, green, blue) \
1034 (((red & 0xf0)<<4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1035 #define rgb2hw8_low(red, green, blue) \
1036 (((red & 0x0f)<<8) | ((green & 0x0f)<<4) | (blue & 0x0f))
1037 #define rgb2hw4(red, green, blue) \
1038 (((red & 0xf0)<<4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1039 #define rgb2hw2(red, green, blue) \
1040 (((red & 0xc0)<<4) | (green & 0xc0) | ((blue & 0xc0)>>4))
1042 /* sprpos/sprctl (sprite positioning) */
1044 #define spr2hw_pos(start_v, start_h) \
1045 (((start_v)<<7&0xff00) | ((start_h)>>3&0x00ff))
1046 #define spr2hw_ctl(start_v, start_h, stop_v) \
1047 (((stop_v)<<7&0xff00) | ((start_v)>>4&0x0040) | ((stop_v)>>5&0x0020) | \
1048 ((start_h)<<3&0x0018) | ((start_v)>>7&0x0004) | ((stop_v)>>8&0x0002) | \
1049 ((start_h)>>2&0x0001))
1051 /* get current vertical position of beam */
1052 #define get_vbpos() ((u_short)((*(u_long volatile *)&custom.vposr >> 7) & 0xffe))
1055 * Copper Initialisation List
1058 #define COPINITSIZE (sizeof(copins)*40)
1065 * Long Frame/Short Frame Copper List
1066 * Don't change the order, build_copper()/rebuild_copper() rely on this
1069 #define COPLISTSIZE (sizeof(copins)*64)
1072 cop_wait, cop_bplcon0,
1073 cop_spr0ptrh, cop_spr0ptrl,
1074 cop_diwstrt, cop_diwstop,
1079 * Pixel modes for Bitplanes and Sprites
1082 static u_short bplpixmode[3] = {
1083 BPC0_SHRES, /* 35 ns */
1084 BPC0_HIRES, /* 70 ns */
1088 static u_short sprpixmode[3] = {
1089 BPC3_SPRES1 | BPC3_SPRES0, /* 35 ns */
1090 BPC3_SPRES1, /* 70 ns */
1091 BPC3_SPRES0 /* 140 ns */
1095 * Fetch modes for Bitplanes and Sprites
1098 static u_short bplfetchmode[3] = {
1100 FMODE_BPL32, /* 2x */
1101 FMODE_BPAGEM | FMODE_BPL32 /* 4x */
1104 static u_short sprfetchmode[3] = {
1106 FMODE_SPR32, /* 2x */
1107 FMODE_SPAGEM | FMODE_SPR32 /* 4x */
1112 * Interface used by the world
1115 int amifb_setup(char*);
1117 static int amifb_check_var(struct fb_var_screeninfo *var,
1118 struct fb_info *info);
1119 static int amifb_set_par(struct fb_info *info);
1120 static int amifb_setcolreg(unsigned regno, unsigned red, unsigned green,
1121 unsigned blue, unsigned transp,
1122 struct fb_info *info);
1123 static int amifb_blank(int blank, struct fb_info *info);
1124 static int amifb_pan_display(struct fb_var_screeninfo *var,
1125 struct fb_info *info);
1126 static void amifb_fillrect(struct fb_info *info,
1127 const struct fb_fillrect *rect);
1128 static void amifb_copyarea(struct fb_info *info,
1129 const struct fb_copyarea *region);
1130 static void amifb_imageblit(struct fb_info *info,
1131 const struct fb_image *image);
1132 static int amifb_ioctl(struct inode *inode, struct file *file,
1133 unsigned int cmd, unsigned long arg,
1134 struct fb_info *info);
1138 * Interface to the low level console driver
1141 int amifb_init(void);
1142 static void amifb_deinit(void);
1148 static int flash_cursor(void);
1149 static irqreturn_t amifb_interrupt(int irq, void *dev_id, struct pt_regs *fp);
1150 static u_long chipalloc(u_long size);
1151 static void chipfree(void);
1157 static int ami_decode_var(struct fb_var_screeninfo *var,
1158 struct amifb_par *par);
1159 static int ami_encode_var(struct fb_var_screeninfo *var,
1160 struct amifb_par *par);
1161 static void ami_pan_var(struct fb_var_screeninfo *var);
1162 static int ami_update_par(void);
1163 static void ami_update_display(void);
1164 static void ami_init_display(void);
1165 static void ami_do_blank(void);
1166 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix);
1167 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char *data);
1168 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char *data);
1169 static int ami_get_cursorstate(struct fb_cursorstate *state);
1170 static int ami_set_cursorstate(struct fb_cursorstate *state);
1171 static void ami_set_sprite(void);
1172 static void ami_init_copper(void);
1173 static void ami_reinit_copper(void);
1174 static void ami_build_copper(void);
1175 static void ami_rebuild_copper(void);
1178 static struct fb_ops amifb_ops = {
1179 .owner = THIS_MODULE,
1180 .fb_check_var = amifb_check_var,
1181 .fb_set_par = amifb_set_par,
1182 .fb_setcolreg = amifb_setcolreg,
1183 .fb_blank = amifb_blank,
1184 .fb_pan_display = amifb_pan_display,
1185 .fb_fillrect = amifb_fillrect,
1186 .fb_copyarea = amifb_copyarea,
1187 .fb_imageblit = amifb_imageblit,
1188 .fb_ioctl = amifb_ioctl,
1191 static void __init amifb_setup_mcap(char *spec)
1194 int vmin, vmax, hmin, hmax;
1196 /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax>
1197 * <V*> vertical freq. in Hz
1198 * <H*> horizontal freq. in kHz
1201 if (!(p = strsep(&spec, ";")) || !*p)
1203 vmin = simple_strtoul(p, NULL, 10);
1206 if (!(p = strsep(&spec, ";")) || !*p)
1208 vmax = simple_strtoul(p, NULL, 10);
1209 if (vmax <= 0 || vmax <= vmin)
1211 if (!(p = strsep(&spec, ";")) || !*p)
1213 hmin = 1000 * simple_strtoul(p, NULL, 10);
1216 if (!(p = strsep(&spec, "")) || !*p)
1218 hmax = 1000 * simple_strtoul(p, NULL, 10);
1219 if (hmax <= 0 || hmax <= hmin)
1222 fb_info.monspecs.vfmin = vmin;
1223 fb_info.monspecs.vfmax = vmax;
1224 fb_info.monspecs.hfmin = hmin;
1225 fb_info.monspecs.hfmax = hmax;
1228 int __init amifb_setup(char *options)
1232 if (!options || !*options)
1235 while ((this_opt = strsep(&options, ",")) != NULL) {
1238 if (!strcmp(this_opt, "inverse")) {
1241 } else if (!strcmp(this_opt, "ilbm"))
1243 else if (!strncmp(this_opt, "monitorcap:", 11))
1244 amifb_setup_mcap(this_opt+11);
1245 else if (!strncmp(this_opt, "fstart:", 7))
1246 min_fstrt = simple_strtoul(this_opt+7, NULL, 0);
1248 mode_option = this_opt;
1258 static int amifb_check_var(struct fb_var_screeninfo *var,
1259 struct fb_info *info)
1262 struct amifb_par par;
1264 /* Validate wanted screen parameters */
1265 if ((err = ami_decode_var(var, &par)))
1268 /* Encode (possibly rounded) screen parameters */
1269 ami_encode_var(var, &par);
1274 static int amifb_set_par(struct fb_info *info)
1276 struct amifb_par *par = (struct amifb_par *)info->par;
1281 /* Decode wanted screen parameters */
1282 ami_decode_var(&info->var, par);
1284 /* Set new videomode */
1287 /* Set VBlank trigger */
1290 /* Update fix for new screen parameters */
1291 if (par->bpp == 1) {
1292 info->fix.type = FB_TYPE_PACKED_PIXELS;
1293 info->fix.type_aux = 0;
1294 } else if (amifb_ilbm) {
1295 info->fix.type = FB_TYPE_INTERLEAVED_PLANES;
1296 info->fix.type_aux = par->next_line;
1298 info->fix.type = FB_TYPE_PLANES;
1299 info->fix.type_aux = 0;
1301 info->fix.line_length = div8(upx(16<<maxfmode, par->vxres));
1303 if (par->vmode & FB_VMODE_YWRAP) {
1304 info->fix.ywrapstep = 1;
1305 info->fix.xpanstep = 0;
1306 info->fix.ypanstep = 0;
1307 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YWRAP |
1308 FBINFO_READS_FAST; /* override SCROLL_REDRAW */
1310 info->fix.ywrapstep = 0;
1311 if (par->vmode & FB_VMODE_SMOOTH_XPAN)
1312 info->fix.xpanstep = 1;
1314 info->fix.xpanstep = 16<<maxfmode;
1315 info->fix.ypanstep = 1;
1316 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1323 * Pan or Wrap the Display
1325 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1328 static int amifb_pan_display(struct fb_var_screeninfo *var,
1329 struct fb_info *info)
1331 if (var->vmode & FB_VMODE_YWRAP) {
1332 if (var->yoffset < 0 ||
1333 var->yoffset >= info->var.yres_virtual || var->xoffset)
1337 * TODO: There will be problems when xpan!=1, so some columns
1338 * on the right side will never be seen
1340 if (var->xoffset+info->var.xres > upx(16<<maxfmode, info->var.xres_virtual) ||
1341 var->yoffset+info->var.yres > info->var.yres_virtual)
1345 info->var.xoffset = var->xoffset;
1346 info->var.yoffset = var->yoffset;
1347 if (var->vmode & FB_VMODE_YWRAP)
1348 info->var.vmode |= FB_VMODE_YWRAP;
1350 info->var.vmode &= ~FB_VMODE_YWRAP;
1355 #if BITS_PER_LONG == 32
1356 #define BYTES_PER_LONG 4
1357 #define SHIFT_PER_LONG 5
1358 #elif BITS_PER_LONG == 64
1359 #define BYTES_PER_LONG 8
1360 #define SHIFT_PER_LONG 6
1362 #define Please update me
1367 * Compose two values, using a bitmask as decision value
1368 * This is equivalent to (a & mask) | (b & ~mask)
1371 static inline unsigned long comp(unsigned long a, unsigned long b,
1374 return ((a ^ b) & mask) ^ b;
1378 static inline unsigned long xor(unsigned long a, unsigned long b,
1381 return (a & mask) ^ b;
1386 * Unaligned forward bit copy using 32-bit or 64-bit memory accesses
1389 static void bitcpy(unsigned long *dst, int dst_idx, const unsigned long *src,
1392 unsigned long first, last;
1393 int shift = dst_idx-src_idx, left, right;
1394 unsigned long d0, d1;
1400 shift = dst_idx-src_idx;
1401 first = ~0UL >> dst_idx;
1402 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1405 // Same alignment for source and dest
1407 if (dst_idx+n <= BITS_PER_LONG) {
1411 *dst = comp(*src, *dst, first);
1413 // Multiple destination words
1416 *dst = comp(*src, *dst, first);
1419 n -= BITS_PER_LONG-dst_idx;
1440 *dst = comp(*src, *dst, last);
1443 // Different alignment for source and dest
1445 right = shift & (BITS_PER_LONG-1);
1446 left = -shift & (BITS_PER_LONG-1);
1448 if (dst_idx+n <= BITS_PER_LONG) {
1449 // Single destination word
1453 // Single source word
1454 *dst = comp(*src >> right, *dst, first);
1455 } else if (src_idx+n <= BITS_PER_LONG) {
1456 // Single source word
1457 *dst = comp(*src << left, *dst, first);
1462 *dst = comp(d0 << left | d1 >> right, *dst,
1466 // Multiple destination words
1470 // Single source word
1471 *dst = comp(d0 >> right, *dst, first);
1473 n -= BITS_PER_LONG-dst_idx;
1477 *dst = comp(d0 << left | d1 >> right, *dst,
1481 n -= BITS_PER_LONG-dst_idx;
1485 m = n % BITS_PER_LONG;
1489 *dst++ = d0 << left | d1 >> right;
1492 *dst++ = d0 << left | d1 >> right;
1495 *dst++ = d0 << left | d1 >> right;
1498 *dst++ = d0 << left | d1 >> right;
1504 *dst++ = d0 << left | d1 >> right;
1511 // Single source word
1512 *dst = comp(d0 << left, *dst, last);
1516 *dst = comp(d0 << left | d1 >> right,
1526 * Unaligned reverse bit copy using 32-bit or 64-bit memory accesses
1529 static void bitcpy_rev(unsigned long *dst, int dst_idx,
1530 const unsigned long *src, int src_idx, u32 n)
1532 unsigned long first, last;
1533 int shift = dst_idx-src_idx, left, right;
1534 unsigned long d0, d1;
1540 dst += (n-1)/BITS_PER_LONG;
1541 src += (n-1)/BITS_PER_LONG;
1542 if ((n-1) % BITS_PER_LONG) {
1543 dst_idx += (n-1) % BITS_PER_LONG;
1544 dst += dst_idx >> SHIFT_PER_LONG;
1545 dst_idx &= BITS_PER_LONG-1;
1546 src_idx += (n-1) % BITS_PER_LONG;
1547 src += src_idx >> SHIFT_PER_LONG;
1548 src_idx &= BITS_PER_LONG-1;
1551 shift = dst_idx-src_idx;
1552 first = ~0UL << (BITS_PER_LONG-1-dst_idx);
1553 last = ~(~0UL << (BITS_PER_LONG-1-((dst_idx-n) % BITS_PER_LONG)));
1556 // Same alignment for source and dest
1558 if ((unsigned long)dst_idx+1 >= n) {
1562 *dst = comp(*src, *dst, first);
1564 // Multiple destination words
1567 *dst = comp(*src, *dst, first);
1591 *dst = comp(*src, *dst, last);
1594 // Different alignment for source and dest
1596 right = shift & (BITS_PER_LONG-1);
1597 left = -shift & (BITS_PER_LONG-1);
1599 if ((unsigned long)dst_idx+1 >= n) {
1600 // Single destination word
1604 // Single source word
1605 *dst = comp(*src << left, *dst, first);
1606 } else if (1+(unsigned long)src_idx >= n) {
1607 // Single source word
1608 *dst = comp(*src >> right, *dst, first);
1613 *dst = comp(d0 >> right | d1 << left, *dst,
1617 // Multiple destination words
1621 // Single source word
1622 *dst = comp(d0 << left, *dst, first);
1628 *dst = comp(d0 >> right | d1 << left, *dst,
1636 m = n % BITS_PER_LONG;
1640 *dst-- = d0 >> right | d1 << left;
1643 *dst-- = d0 >> right | d1 << left;
1646 *dst-- = d0 >> right | d1 << left;
1649 *dst-- = d0 >> right | d1 << left;
1655 *dst-- = d0 >> right | d1 << left;
1662 // Single source word
1663 *dst = comp(d0 >> right, *dst, last);
1667 *dst = comp(d0 >> right | d1 << left,
1677 * Unaligned forward inverting bit copy using 32-bit or 64-bit memory
1681 static void bitcpy_not(unsigned long *dst, int dst_idx,
1682 const unsigned long *src, int src_idx, u32 n)
1684 unsigned long first, last;
1685 int shift = dst_idx-src_idx, left, right;
1686 unsigned long d0, d1;
1692 shift = dst_idx-src_idx;
1693 first = ~0UL >> dst_idx;
1694 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1697 // Same alignment for source and dest
1699 if (dst_idx+n <= BITS_PER_LONG) {
1703 *dst = comp(~*src, *dst, first);
1705 // Multiple destination words
1708 *dst = comp(~*src, *dst, first);
1711 n -= BITS_PER_LONG-dst_idx;
1732 *dst = comp(~*src, *dst, last);
1735 // Different alignment for source and dest
1737 right = shift & (BITS_PER_LONG-1);
1738 left = -shift & (BITS_PER_LONG-1);
1740 if (dst_idx+n <= BITS_PER_LONG) {
1741 // Single destination word
1745 // Single source word
1746 *dst = comp(~*src >> right, *dst, first);
1747 } else if (src_idx+n <= BITS_PER_LONG) {
1748 // Single source word
1749 *dst = comp(~*src << left, *dst, first);
1754 *dst = comp(d0 << left | d1 >> right, *dst,
1758 // Multiple destination words
1762 // Single source word
1763 *dst = comp(d0 >> right, *dst, first);
1765 n -= BITS_PER_LONG-dst_idx;
1769 *dst = comp(d0 << left | d1 >> right, *dst,
1773 n -= BITS_PER_LONG-dst_idx;
1777 m = n % BITS_PER_LONG;
1781 *dst++ = d0 << left | d1 >> right;
1784 *dst++ = d0 << left | d1 >> right;
1787 *dst++ = d0 << left | d1 >> right;
1790 *dst++ = d0 << left | d1 >> right;
1796 *dst++ = d0 << left | d1 >> right;
1803 // Single source word
1804 *dst = comp(d0 << left, *dst, last);
1808 *dst = comp(d0 << left | d1 >> right,
1818 * Unaligned 32-bit pattern fill using 32/64-bit memory accesses
1821 static void bitfill32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1823 unsigned long val = pat;
1824 unsigned long first, last;
1829 #if BITS_PER_LONG == 64
1833 first = ~0UL >> dst_idx;
1834 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1836 if (dst_idx+n <= BITS_PER_LONG) {
1840 *dst = comp(val, *dst, first);
1842 // Multiple destination words
1845 *dst = comp(val, *dst, first);
1847 n -= BITS_PER_LONG-dst_idx;
1868 *dst = comp(val, *dst, last);
1874 * Unaligned 32-bit pattern xor using 32/64-bit memory accesses
1877 static void bitxor32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1879 unsigned long val = pat;
1880 unsigned long first, last;
1885 #if BITS_PER_LONG == 64
1889 first = ~0UL >> dst_idx;
1890 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1892 if (dst_idx+n <= BITS_PER_LONG) {
1896 *dst = xor(val, *dst, first);
1898 // Multiple destination words
1901 *dst = xor(val, *dst, first);
1903 n -= BITS_PER_LONG-dst_idx;
1920 *dst = xor(val, *dst, last);
1924 static inline void fill_one_line(int bpp, unsigned long next_plane,
1925 unsigned long *dst, int dst_idx, u32 n,
1929 dst += dst_idx >> SHIFT_PER_LONG;
1930 dst_idx &= (BITS_PER_LONG-1);
1931 bitfill32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1935 dst_idx += next_plane*8;
1939 static inline void xor_one_line(int bpp, unsigned long next_plane,
1940 unsigned long *dst, int dst_idx, u32 n,
1944 dst += dst_idx >> SHIFT_PER_LONG;
1945 dst_idx &= (BITS_PER_LONG-1);
1946 bitxor32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1950 dst_idx += next_plane*8;
1955 static void amifb_fillrect(struct fb_info *info,
1956 const struct fb_fillrect *rect)
1958 struct amifb_par *par = (struct amifb_par *)info->par;
1959 int dst_idx, x2, y2;
1963 if (!rect->width || !rect->height)
1967 * We could use hardware clipping but on many cards you get around
1968 * hardware clipping by writing to framebuffer directly.
1970 x2 = rect->dx + rect->width;
1971 y2 = rect->dy + rect->height;
1972 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
1973 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
1974 width = x2 - rect->dx;
1975 height = y2 - rect->dy;
1977 dst = (unsigned long *)
1978 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
1979 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
1980 dst_idx += rect->dy*par->next_line*8+rect->dx;
1982 switch (rect->rop) {
1984 fill_one_line(info->var.bits_per_pixel,
1985 par->next_plane, dst, dst_idx, width,
1990 xor_one_line(info->var.bits_per_pixel, par->next_plane,
1991 dst, dst_idx, width, rect->color);
1994 dst_idx += par->next_line*8;
1998 static inline void copy_one_line(int bpp, unsigned long next_plane,
1999 unsigned long *dst, int dst_idx,
2000 unsigned long *src, int src_idx, u32 n)
2003 dst += dst_idx >> SHIFT_PER_LONG;
2004 dst_idx &= (BITS_PER_LONG-1);
2005 src += src_idx >> SHIFT_PER_LONG;
2006 src_idx &= (BITS_PER_LONG-1);
2007 bitcpy(dst, dst_idx, src, src_idx, n);
2010 dst_idx += next_plane*8;
2011 src_idx += next_plane*8;
2015 static inline void copy_one_line_rev(int bpp, unsigned long next_plane,
2016 unsigned long *dst, int dst_idx,
2017 unsigned long *src, int src_idx, u32 n)
2020 dst += dst_idx >> SHIFT_PER_LONG;
2021 dst_idx &= (BITS_PER_LONG-1);
2022 src += src_idx >> SHIFT_PER_LONG;
2023 src_idx &= (BITS_PER_LONG-1);
2024 bitcpy_rev(dst, dst_idx, src, src_idx, n);
2027 dst_idx += next_plane*8;
2028 src_idx += next_plane*8;
2033 static void amifb_copyarea(struct fb_info *info,
2034 const struct fb_copyarea *area)
2036 struct amifb_par *par = (struct amifb_par *)info->par;
2038 u32 dx, dy, sx, sy, width, height;
2039 unsigned long *dst, *src;
2040 int dst_idx, src_idx;
2043 /* clip the destination */
2044 x2 = area->dx + area->width;
2045 y2 = area->dy + area->height;
2046 dx = area->dx > 0 ? area->dx : 0;
2047 dy = area->dy > 0 ? area->dy : 0;
2048 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2049 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2054 sx = area->sx + (dx - area->dx);
2055 sy = area->sy + (dy - area->dy);
2057 /* the source must be completely inside the virtual screen */
2058 if (sx < 0 || sy < 0 || (sx + width) > info->var.xres_virtual ||
2059 (sy + height) > info->var.yres_virtual)
2062 if (dy > sy || (dy == sy && dx > sx)) {
2067 dst = (unsigned long *)
2068 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2070 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2072 dst_idx += dy*par->next_line*8+dx;
2073 src_idx += sy*par->next_line*8+sx;
2076 dst_idx -= par->next_line*8;
2077 src_idx -= par->next_line*8;
2078 copy_one_line_rev(info->var.bits_per_pixel,
2079 par->next_plane, dst, dst_idx, src,
2084 copy_one_line(info->var.bits_per_pixel,
2085 par->next_plane, dst, dst_idx, src,
2087 dst_idx += par->next_line*8;
2088 src_idx += par->next_line*8;
2094 static inline void expand_one_line(int bpp, unsigned long next_plane,
2095 unsigned long *dst, int dst_idx, u32 n,
2096 const u8 *data, u32 bgcolor, u32 fgcolor)
2098 const unsigned long *src;
2102 dst += dst_idx >> SHIFT_PER_LONG;
2103 dst_idx &= (BITS_PER_LONG-1);
2104 if ((bgcolor ^ fgcolor) & 1) {
2105 src = (unsigned long *)((unsigned long)data & ~(BYTES_PER_LONG-1));
2106 src_idx = ((unsigned long)data & (BYTES_PER_LONG-1))*8;
2108 bitcpy(dst, dst_idx, src, src_idx, n);
2110 bitcpy_not(dst, dst_idx, src, src_idx, n);
2113 bitfill32(dst, dst_idx, fgcolor & 1 ? ~0 : 0, n);
2118 dst_idx += next_plane*8;
2123 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
2125 struct amifb_par *par = (struct amifb_par *)info->par;
2130 u32 dx, dy, width, height, pitch;
2133 * We could use hardware clipping but on many cards you get around
2134 * hardware clipping by writing to framebuffer directly like we are
2137 x2 = image->dx + image->width;
2138 y2 = image->dy + image->height;
2141 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2142 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2146 if (image->depth == 1) {
2147 dst = (unsigned long *)
2148 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2149 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2150 dst_idx += dy*par->next_line*8+dx;
2152 pitch = (image->width+7)/8;
2154 expand_one_line(info->var.bits_per_pixel,
2155 par->next_plane, dst, dst_idx, width,
2156 src, image->bg_color,
2158 dst_idx += par->next_line*8;
2162 c2p(info->screen_base, image->data, dx, dy, width, height,
2163 par->next_line, par->next_plane, image->width,
2164 info->var.bits_per_pixel);
2170 * Amiga Frame Buffer Specific ioctls
2173 static int amifb_ioctl(struct inode *inode, struct file *file,
2174 unsigned int cmd, unsigned long arg,
2175 struct fb_info *info)
2178 struct fb_fix_cursorinfo fix;
2179 struct fb_var_cursorinfo var;
2180 struct fb_cursorstate state;
2185 case FBIOGET_FCURSORINFO:
2186 i = ami_get_fix_cursorinfo(&crsr.fix);
2189 return copy_to_user((void *)arg, &crsr.fix,
2190 sizeof(crsr.fix)) ? -EFAULT : 0;
2192 case FBIOGET_VCURSORINFO:
2193 i = ami_get_var_cursorinfo(&crsr.var,
2194 ((struct fb_var_cursorinfo *)arg)->data);
2197 return copy_to_user((void *)arg, &crsr.var,
2198 sizeof(crsr.var)) ? -EFAULT : 0;
2200 case FBIOPUT_VCURSORINFO:
2201 if (copy_from_user(&crsr.var, (void *)arg,
2204 return ami_set_var_cursorinfo(&crsr.var,
2205 ((struct fb_var_cursorinfo *)arg)->data);
2207 case FBIOGET_CURSORSTATE:
2208 i = ami_get_cursorstate(&crsr.state);
2211 return copy_to_user((void *)arg, &crsr.state,
2212 sizeof(crsr.state)) ? -EFAULT : 0;
2214 case FBIOPUT_CURSORSTATE:
2215 if (copy_from_user(&crsr.state, (void *)arg,
2216 sizeof(crsr.state)))
2218 return ami_set_cursorstate(&crsr.state);
2225 * Allocate, Clear and Align a Block of Chip Memory
2228 static u_long unaligned_chipptr = 0;
2230 static inline u_long __init chipalloc(u_long size)
2232 size += PAGE_SIZE-1;
2233 if (!(unaligned_chipptr = (u_long)amiga_chip_alloc(size,
2235 panic("No Chip RAM for frame buffer");
2236 memset((void *)unaligned_chipptr, 0, size);
2237 return PAGE_ALIGN(unaligned_chipptr);
2240 static inline void chipfree(void)
2242 if (unaligned_chipptr)
2243 amiga_chip_free((void *)unaligned_chipptr);
2251 int __init amifb_init(void)
2253 int tag, i, err = 0;
2258 char *option = NULL;
2260 if (fb_get_options("amifb", &option)) {
2264 amifb_setup(option);
2266 if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_VIDEO))
2270 * We request all registers starting from bplpt[0]
2272 if (!request_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120,
2273 "amifb [Denise/Lisa]"))
2276 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2278 switch (amiga_chipset) {
2279 #ifdef CONFIG_FB_AMIGA_OCS
2281 strcat(fb_info.fix.id, "OCS");
2284 maxdepth[TAG_SHRES] = 0; /* OCS means no SHRES */
2285 maxdepth[TAG_HIRES] = 4;
2286 maxdepth[TAG_LORES] = 6;
2287 maxfmode = TAG_FMODE_1;
2288 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2290 fb_info.fix.smem_len = VIDEOMEMSIZE_OCS;
2292 #endif /* CONFIG_FB_AMIGA_OCS */
2294 #ifdef CONFIG_FB_AMIGA_ECS
2296 strcat(fb_info.fix.id, "ECS");
2298 maxdepth[TAG_SHRES] = 2;
2299 maxdepth[TAG_HIRES] = 4;
2300 maxdepth[TAG_LORES] = 6;
2301 maxfmode = TAG_FMODE_1;
2302 if (AMIGAHW_PRESENT(AMBER_FF))
2303 defmode = amiga_vblank == 50 ? DEFMODE_AMBER_PAL
2304 : DEFMODE_AMBER_NTSC;
2306 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2308 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2309 VIDEOMEMSIZE_ECS_1M)
2310 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_2M;
2312 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_1M;
2314 #endif /* CONFIG_FB_AMIGA_ECS */
2316 #ifdef CONFIG_FB_AMIGA_AGA
2318 strcat(fb_info.fix.id, "AGA");
2320 maxdepth[TAG_SHRES] = 8;
2321 maxdepth[TAG_HIRES] = 8;
2322 maxdepth[TAG_LORES] = 8;
2323 maxfmode = TAG_FMODE_4;
2324 defmode = DEFMODE_AGA;
2325 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2326 VIDEOMEMSIZE_AGA_1M)
2327 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_2M;
2329 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_1M;
2331 #endif /* CONFIG_FB_AMIGA_AGA */
2334 #ifdef CONFIG_FB_AMIGA_OCS
2335 printk("Unknown graphics chipset, defaulting to OCS\n");
2336 strcat(fb_info.fix.id, "Unknown");
2337 goto default_chipset;
2338 #else /* CONFIG_FB_AMIGA_OCS */
2341 #endif /* CONFIG_FB_AMIGA_OCS */
2346 * Calculate the Pixel Clock Values for this Machine
2350 u_long tmp = DIVUL(200000000000ULL, amiga_eclock);
2352 pixclock[TAG_SHRES] = (tmp + 4) / 8; /* SHRES: 35 ns / 28 MHz */
2353 pixclock[TAG_HIRES] = (tmp + 2) / 4; /* HIRES: 70 ns / 14 MHz */
2354 pixclock[TAG_LORES] = (tmp + 1) / 2; /* LORES: 140 ns / 7 MHz */
2358 * Replace the Tag Values with the Real Pixel Clock Values
2361 for (i = 0; i < NUM_TOTAL_MODES; i++) {
2362 struct fb_videomode *mode = &ami_modedb[i];
2363 tag = mode->pixclock;
2364 if (tag == TAG_SHRES || tag == TAG_HIRES || tag == TAG_LORES) {
2365 mode->pixclock = pixclock[tag];
2370 * These monitor specs are for a typical Amiga monitor (e.g. A1960)
2372 if (fb_info.monspecs.hfmin == 0) {
2373 fb_info.monspecs.hfmin = 15000;
2374 fb_info.monspecs.hfmax = 38000;
2375 fb_info.monspecs.vfmin = 49;
2376 fb_info.monspecs.vfmax = 90;
2379 fb_info.fbops = &amifb_ops;
2380 fb_info.par = ¤tpar;
2381 fb_info.flags = FBINFO_DEFAULT;
2383 if (!fb_find_mode(&fb_info.var, &fb_info, mode_option, ami_modedb,
2384 NUM_TOTAL_MODES, &ami_modedb[defmode], 4)) {
2390 chipptr = chipalloc(fb_info.fix.smem_len+
2396 assignchunk(videomemory, u_long, chipptr, fb_info.fix.smem_len);
2397 assignchunk(spritememory, u_long, chipptr, SPRITEMEMSIZE);
2398 assignchunk(dummysprite, u_short *, chipptr, DUMMYSPRITEMEMSIZE);
2399 assignchunk(copdisplay.init, copins *, chipptr, COPINITSIZE);
2400 assignchunk(copdisplay.list[0][0], copins *, chipptr, COPLISTSIZE);
2401 assignchunk(copdisplay.list[0][1], copins *, chipptr, COPLISTSIZE);
2402 assignchunk(copdisplay.list[1][0], copins *, chipptr, COPLISTSIZE);
2403 assignchunk(copdisplay.list[1][1], copins *, chipptr, COPLISTSIZE);
2406 * access the videomem with writethrough cache
2408 fb_info.fix.smem_start = (u_long)ZTWO_PADDR(videomemory);
2409 videomemory = (u_long)ioremap_writethrough(fb_info.fix.smem_start,
2410 fb_info.fix.smem_len);
2412 printk("amifb: WARNING! unable to map videomem cached writethrough\n");
2413 videomemory = ZTWO_VADDR(fb_info.fix.smem_start);
2416 fb_info.screen_base = (char *)videomemory;
2417 memset(dummysprite, 0, DUMMYSPRITEMEMSIZE);
2420 * Enable Display DMA
2423 custom.dmacon = DMAF_SETCLR | DMAF_MASTER | DMAF_RASTER | DMAF_COPPER |
2424 DMAF_BLITTER | DMAF_SPRITE;
2427 * Make sure the Copper has something to do
2432 if (request_irq(IRQ_AMIGA_COPPER, amifb_interrupt, 0,
2433 "fb vertb handler", ¤tpar)) {
2438 fb_alloc_cmap(&fb_info.cmap, 1<<fb_info.var.bits_per_pixel, 0);
2440 if (register_framebuffer(&fb_info) < 0) {
2445 printk("fb%d: %s frame buffer device, using %dK of video memory\n",
2446 fb_info.node, fb_info.fix.id, fb_info.fix.smem_len>>10);
2455 static void amifb_deinit(void)
2457 fb_dealloc_cmap(&fb_info.cmap);
2459 release_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120);
2460 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2465 * Blank the display.
2468 static int amifb_blank(int blank, struct fb_info *info)
2470 do_blank = blank ? blank : -1;
2476 * Flash the cursor (called by VBlank interrupt)
2479 static int flash_cursor(void)
2481 static int cursorcount = 1;
2483 if (cursormode == FB_CURSOR_FLASH) {
2484 if (!--cursorcount) {
2485 cursorstate = -cursorstate;
2486 cursorcount = cursorrate;
2495 * VBlank Display Interrupt
2498 static irqreturn_t amifb_interrupt(int irq, void *dev_id, struct pt_regs *fp)
2500 if (do_vmode_pan || do_vmode_full)
2501 ami_update_display();
2508 ami_rebuild_copper();
2509 do_cursor = do_vmode_pan = 0;
2510 } else if (do_cursor) {
2524 if (do_vmode_full) {
2525 ami_reinit_copper();
2531 /* --------------------------- Hardware routines --------------------------- */
2534 * Get the video params out of `var'. If a value doesn't fit, round
2535 * it up, if it's too big, return -EINVAL.
2538 static int ami_decode_var(struct fb_var_screeninfo *var,
2539 struct amifb_par *par)
2541 u_short clk_shift, line_shift;
2542 u_long maxfetchstop, fstrt, fsize, fconst, xres_n, yres_n;
2543 u_int htotal, vtotal;
2546 * Find a matching Pixel Clock
2549 for (clk_shift = TAG_SHRES; clk_shift <= TAG_LORES; clk_shift++)
2550 if (var->pixclock <= pixclock[clk_shift])
2552 if (clk_shift > TAG_LORES) {
2553 DPRINTK("pixclock too high\n");
2556 par->clk_shift = clk_shift;
2559 * Check the Geometry Values
2562 if ((par->xres = var->xres) < 64)
2564 if ((par->yres = var->yres) < 64)
2566 if ((par->vxres = var->xres_virtual) < par->xres)
2567 par->vxres = par->xres;
2568 if ((par->vyres = var->yres_virtual) < par->yres)
2569 par->vyres = par->yres;
2571 par->bpp = var->bits_per_pixel;
2575 if (par->bpp > maxdepth[clk_shift]) {
2576 if (round_down_bpp && maxdepth[clk_shift])
2577 par->bpp = maxdepth[clk_shift];
2579 DPRINTK("invalid bpp\n");
2583 } else if (var->nonstd == FB_NONSTD_HAM) {
2586 if (par->bpp != 6) {
2589 if (par->bpp != 8 || !IS_AGA) {
2590 DPRINTK("invalid bpp for ham mode\n");
2595 DPRINTK("unknown nonstd mode\n");
2600 * FB_VMODE_SMOOTH_XPAN will be cleared, if one of the folloing
2601 * checks failed and smooth scrolling is not possible
2604 par->vmode = var->vmode | FB_VMODE_SMOOTH_XPAN;
2605 switch (par->vmode & FB_VMODE_MASK) {
2606 case FB_VMODE_INTERLACED:
2609 case FB_VMODE_NONINTERLACED:
2612 case FB_VMODE_DOUBLE:
2614 DPRINTK("double mode only possible with aga\n");
2620 DPRINTK("unknown video mode\n");
2624 par->line_shift = line_shift;
2627 * Vertical and Horizontal Timings
2630 xres_n = par->xres<<clk_shift;
2631 yres_n = par->yres<<line_shift;
2632 par->htotal = down8((var->left_margin+par->xres+var->right_margin+var->hsync_len)<<clk_shift);
2633 par->vtotal = down2(((var->upper_margin+par->yres+var->lower_margin+var->vsync_len)<<line_shift)+1);
2636 par->bplcon3 = sprpixmode[clk_shift];
2639 if (var->sync & FB_SYNC_BROADCAST) {
2640 par->diwstop_h = par->htotal-((var->right_margin-var->hsync_len)<<clk_shift);
2642 par->diwstop_h += mod4(var->hsync_len);
2644 par->diwstop_h = down4(par->diwstop_h);
2646 par->diwstrt_h = par->diwstop_h - xres_n;
2647 par->diwstop_v = par->vtotal-((var->lower_margin-var->vsync_len)<<line_shift);
2648 par->diwstrt_v = par->diwstop_v - yres_n;
2649 if (par->diwstop_h >= par->htotal+8) {
2650 DPRINTK("invalid diwstop_h\n");
2653 if (par->diwstop_v > par->vtotal) {
2654 DPRINTK("invalid diwstop_v\n");
2659 /* Initialize sync with some reasonable values for pwrsave */
2670 if (par->vtotal > (PAL_VTOTAL+NTSC_VTOTAL)/2) {
2671 /* PAL video mode */
2672 if (par->htotal != PAL_HTOTAL) {
2673 DPRINTK("htotal invalid for pal\n");
2676 if (par->diwstrt_h < PAL_DIWSTRT_H) {
2677 DPRINTK("diwstrt_h too low for pal\n");
2680 if (par->diwstrt_v < PAL_DIWSTRT_V) {
2681 DPRINTK("diwstrt_v too low for pal\n");
2684 htotal = PAL_HTOTAL>>clk_shift;
2685 vtotal = PAL_VTOTAL>>1;
2687 par->beamcon0 = BMC0_PAL;
2688 par->bplcon3 |= BPC3_BRDRBLNK;
2689 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2690 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2691 par->beamcon0 = BMC0_PAL;
2693 } else if (amiga_vblank != 50) {
2694 DPRINTK("pal not supported by this chipset\n");
2699 * In the AGA chipset seems to be hardware bug with BPC3_BRDRBLNK
2700 * and NTSC activated, so than better let diwstop_h <= 1812
2702 if (par->htotal != NTSC_HTOTAL) {
2703 DPRINTK("htotal invalid for ntsc\n");
2706 if (par->diwstrt_h < NTSC_DIWSTRT_H) {
2707 DPRINTK("diwstrt_h too low for ntsc\n");
2710 if (par->diwstrt_v < NTSC_DIWSTRT_V) {
2711 DPRINTK("diwstrt_v too low for ntsc\n");
2714 htotal = NTSC_HTOTAL>>clk_shift;
2715 vtotal = NTSC_VTOTAL>>1;
2718 par->bplcon3 |= BPC3_BRDRBLNK;
2719 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2720 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2723 } else if (amiga_vblank != 60) {
2724 DPRINTK("ntsc not supported by this chipset\n");
2729 if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
2730 par->diwstrt_v >= 512 || par->diwstop_v < 256) {
2731 DPRINTK("invalid position for display on ocs\n");
2735 } else if (!IS_OCS) {
2736 /* Programmable video mode */
2737 par->hsstrt = var->right_margin<<clk_shift;
2738 par->hsstop = (var->right_margin+var->hsync_len)<<clk_shift;
2739 par->diwstop_h = par->htotal - mod8(par->hsstrt) + 8 - (1 << clk_shift);
2741 par->diwstop_h = down4(par->diwstop_h) - 16;
2742 par->diwstrt_h = par->diwstop_h - xres_n;
2743 par->hbstop = par->diwstrt_h + 4;
2744 par->hbstrt = par->diwstop_h + 4;
2745 if (par->hbstrt >= par->htotal + 8)
2746 par->hbstrt -= par->htotal;
2747 par->hcenter = par->hsstrt + (par->htotal >> 1);
2748 par->vsstrt = var->lower_margin<<line_shift;
2749 par->vsstop = (var->lower_margin+var->vsync_len)<<line_shift;
2750 par->diwstop_v = par->vtotal;
2751 if ((par->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
2752 par->diwstop_v -= 2;
2753 par->diwstrt_v = par->diwstop_v - yres_n;
2754 par->vbstop = par->diwstrt_v - 2;
2755 par->vbstrt = par->diwstop_v - 2;
2756 if (par->vtotal > 2048) {
2757 DPRINTK("vtotal too high\n");
2760 if (par->htotal > 2048) {
2761 DPRINTK("htotal too high\n");
2764 par->bplcon3 |= BPC3_EXTBLKEN;
2765 par->beamcon0 = BMC0_HARDDIS | BMC0_VARVBEN | BMC0_LOLDIS |
2766 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARBEAMEN |
2767 BMC0_PAL | BMC0_VARCSYEN;
2768 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
2769 par->beamcon0 |= BMC0_HSYTRUE;
2770 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
2771 par->beamcon0 |= BMC0_VSYTRUE;
2772 if (var->sync & FB_SYNC_COMP_HIGH_ACT)
2773 par->beamcon0 |= BMC0_CSYTRUE;
2774 htotal = par->htotal>>clk_shift;
2775 vtotal = par->vtotal>>1;
2777 DPRINTK("only broadcast modes possible for ocs\n");
2782 * Checking the DMA timing
2785 fconst = 16<<maxfmode<<clk_shift;
2788 * smallest window start value without turn off other dma cycles
2789 * than sprite1-7, unless you change min_fstrt
2793 fsize = ((maxfmode+clk_shift <= 1) ? fconst : 64);
2794 fstrt = downx(fconst, par->diwstrt_h-4) - fsize;
2795 if (fstrt < min_fstrt) {
2796 DPRINTK("fetch start too low\n");
2801 * smallest window start value where smooth scrolling is possible
2804 fstrt = downx(fconst, par->diwstrt_h-fconst+(1<<clk_shift)-4) - fsize;
2805 if (fstrt < min_fstrt)
2806 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2808 maxfetchstop = down16(par->htotal - 80);
2810 fstrt = downx(fconst, par->diwstrt_h-4) - 64 - fconst;
2811 fsize = upx(fconst, xres_n + modx(fconst, downx(1<<clk_shift, par->diwstrt_h-4)));
2812 if (fstrt + fsize > maxfetchstop)
2813 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2815 fsize = upx(fconst, xres_n);
2816 if (fstrt + fsize > maxfetchstop) {
2817 DPRINTK("fetch stop too high\n");
2821 if (maxfmode + clk_shift <= 1) {
2822 fsize = up64(xres_n + fconst - 1);
2823 if (min_fstrt + fsize - 64 > maxfetchstop)
2824 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2826 fsize = up64(xres_n);
2827 if (min_fstrt + fsize - 64 > maxfetchstop) {
2828 DPRINTK("fetch size too high\n");
2837 * Check if there is enough time to update the bitplane pointers for ywrap
2840 if (par->htotal-fsize-64 < par->bpp*64)
2841 par->vmode &= ~FB_VMODE_YWRAP;
2844 * Bitplane calculations and check the Memory Requirements
2848 par->next_plane = div8(upx(16<<maxfmode, par->vxres));
2849 par->next_line = par->bpp*par->next_plane;
2850 if (par->next_line * par->vyres > fb_info.fix.smem_len) {
2851 DPRINTK("too few video mem\n");
2855 par->next_line = div8(upx(16<<maxfmode, par->vxres));
2856 par->next_plane = par->vyres*par->next_line;
2857 if (par->next_plane * par->bpp > fb_info.fix.smem_len) {
2858 DPRINTK("too few video mem\n");
2864 * Hardware Register Values
2867 par->bplcon0 = BPC0_COLOR | bplpixmode[clk_shift];
2869 par->bplcon0 |= BPC0_ECSENA;
2871 par->bplcon0 |= BPC0_BPU3;
2873 par->bplcon0 |= par->bpp<<12;
2874 if (var->nonstd == FB_NONSTD_HAM)
2875 par->bplcon0 |= BPC0_HAM;
2876 if (var->sync & FB_SYNC_EXT)
2877 par->bplcon0 |= BPC0_ERSY;
2880 par->fmode = bplfetchmode[maxfmode];
2882 switch (par->vmode & FB_VMODE_MASK) {
2883 case FB_VMODE_INTERLACED:
2884 par->bplcon0 |= BPC0_LACE;
2886 case FB_VMODE_DOUBLE:
2888 par->fmode |= FMODE_SSCAN2 | FMODE_BSCAN2;
2892 if (!((par->vmode ^ var->vmode) & FB_VMODE_YWRAP)) {
2893 par->xoffset = var->xoffset;
2894 par->yoffset = var->yoffset;
2895 if (par->vmode & FB_VMODE_YWRAP) {
2896 if (par->xoffset || par->yoffset < 0 || par->yoffset >= par->vyres)
2897 par->xoffset = par->yoffset = 0;
2899 if (par->xoffset < 0 || par->xoffset > upx(16<<maxfmode, par->vxres-par->xres) ||
2900 par->yoffset < 0 || par->yoffset > par->vyres-par->yres)
2901 par->xoffset = par->yoffset = 0;
2904 par->xoffset = par->yoffset = 0;
2906 par->crsr.crsr_x = par->crsr.crsr_y = 0;
2907 par->crsr.spot_x = par->crsr.spot_y = 0;
2908 par->crsr.height = par->crsr.width = 0;
2910 #if 0 /* fbmon not done. uncomment for 2.5.x -brad */
2911 if (!fbmon_valid_timings(pixclock[clk_shift], htotal, vtotal,
2913 DPRINTK("mode doesn't fit for monitor\n");
2922 * Fill the `var' structure based on the values in `par' and maybe
2923 * other values read out of the hardware.
2926 static int ami_encode_var(struct fb_var_screeninfo *var,
2927 struct amifb_par *par)
2929 u_short clk_shift, line_shift;
2931 memset(var, 0, sizeof(struct fb_var_screeninfo));
2933 clk_shift = par->clk_shift;
2934 line_shift = par->line_shift;
2936 var->xres = par->xres;
2937 var->yres = par->yres;
2938 var->xres_virtual = par->vxres;
2939 var->yres_virtual = par->vyres;
2940 var->xoffset = par->xoffset;
2941 var->yoffset = par->yoffset;
2943 var->bits_per_pixel = par->bpp;
2946 var->red.offset = 0;
2947 var->red.msb_right = 0;
2948 var->red.length = par->bpp;
2949 if (par->bplcon0 & BPC0_HAM)
2950 var->red.length -= 2;
2951 var->blue = var->green = var->red;
2952 var->transp.offset = 0;
2953 var->transp.length = 0;
2954 var->transp.msb_right = 0;
2956 if (par->bplcon0 & BPC0_HAM)
2957 var->nonstd = FB_NONSTD_HAM;
2965 var->pixclock = pixclock[clk_shift];
2967 if (IS_AGA && par->fmode & FMODE_BSCAN2)
2968 var->vmode = FB_VMODE_DOUBLE;
2969 else if (par->bplcon0 & BPC0_LACE)
2970 var->vmode = FB_VMODE_INTERLACED;
2972 var->vmode = FB_VMODE_NONINTERLACED;
2974 if (!IS_OCS && par->beamcon0 & BMC0_VARBEAMEN) {
2975 var->hsync_len = (par->hsstop-par->hsstrt)>>clk_shift;
2976 var->right_margin = par->hsstrt>>clk_shift;
2977 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2978 var->vsync_len = (par->vsstop-par->vsstrt)>>line_shift;
2979 var->lower_margin = par->vsstrt>>line_shift;
2980 var->upper_margin = (par->vtotal>>line_shift) - var->yres - var->lower_margin - var->vsync_len;
2982 if (par->beamcon0 & BMC0_HSYTRUE)
2983 var->sync |= FB_SYNC_HOR_HIGH_ACT;
2984 if (par->beamcon0 & BMC0_VSYTRUE)
2985 var->sync |= FB_SYNC_VERT_HIGH_ACT;
2986 if (par->beamcon0 & BMC0_CSYTRUE)
2987 var->sync |= FB_SYNC_COMP_HIGH_ACT;
2989 var->sync = FB_SYNC_BROADCAST;
2990 var->hsync_len = (152>>clk_shift) + mod4(par->diwstop_h);
2991 var->right_margin = ((par->htotal - down4(par->diwstop_h))>>clk_shift) + var->hsync_len;
2992 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2993 var->vsync_len = 4>>line_shift;
2994 var->lower_margin = ((par->vtotal - par->diwstop_v)>>line_shift) + var->vsync_len;
2995 var->upper_margin = (((par->vtotal - 2)>>line_shift) + 1) - var->yres -
2996 var->lower_margin - var->vsync_len;
2999 if (par->bplcon0 & BPC0_ERSY)
3000 var->sync |= FB_SYNC_EXT;
3001 if (par->vmode & FB_VMODE_YWRAP)
3002 var->vmode |= FB_VMODE_YWRAP;
3009 * Pan or Wrap the Display
3011 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
3015 static void ami_pan_var(struct fb_var_screeninfo *var)
3017 struct amifb_par *par = ¤tpar;
3019 par->xoffset = var->xoffset;
3020 par->yoffset = var->yoffset;
3021 if (var->vmode & FB_VMODE_YWRAP)
3022 par->vmode |= FB_VMODE_YWRAP;
3024 par->vmode &= ~FB_VMODE_YWRAP;
3035 static int ami_update_par(void)
3037 struct amifb_par *par = ¤tpar;
3038 short clk_shift, vshift, fstrt, fsize, fstop, fconst, shift, move, mod;
3040 clk_shift = par->clk_shift;
3042 if (!(par->vmode & FB_VMODE_SMOOTH_XPAN))
3043 par->xoffset = upx(16<<maxfmode, par->xoffset);
3045 fconst = 16<<maxfmode<<clk_shift;
3046 vshift = modx(16<<maxfmode, par->xoffset);
3047 fstrt = par->diwstrt_h - (vshift<<clk_shift) - 4;
3048 fsize = (par->xres+vshift)<<clk_shift;
3049 shift = modx(fconst, fstrt);
3050 move = downx(2<<maxfmode, div8(par->xoffset));
3051 if (maxfmode + clk_shift > 1) {
3052 fstrt = downx(fconst, fstrt) - 64;
3053 fsize = upx(fconst, fsize);
3054 fstop = fstrt + fsize - fconst;
3056 mod = fstrt = downx(fconst, fstrt) - fconst;
3057 fstop = fstrt + upx(fconst, fsize) - 64;
3058 fsize = up64(fsize);
3059 fstrt = fstop - fsize + 64;
3060 if (fstrt < min_fstrt) {
3061 fstop += min_fstrt - fstrt;
3064 move = move - div8((mod-fstrt)>>clk_shift);
3066 mod = par->next_line - div8(fsize>>clk_shift);
3067 par->ddfstrt = fstrt;
3068 par->ddfstop = fstop;
3069 par->bplcon1 = hscroll2hw(shift);
3071 if (par->bplcon0 & BPC0_LACE)
3072 par->bpl2mod += par->next_line;
3073 if (IS_AGA && (par->fmode & FMODE_BSCAN2))
3074 par->bpl1mod = -div8(fsize>>clk_shift);
3076 par->bpl1mod = par->bpl2mod;
3079 par->bplpt0 = fb_info.fix.smem_start + par->next_line*par->yoffset + move;
3080 if (par->vmode & FB_VMODE_YWRAP) {
3081 if (par->yoffset > par->vyres-par->yres) {
3082 par->bplpt0wrap = fb_info.fix.smem_start + move;
3083 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v+par->vyres-par->yoffset))
3084 par->bplpt0wrap += par->next_line;
3088 par->bplpt0 = fb_info.fix.smem_start + move;
3090 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v))
3091 par->bplpt0 += par->next_line;
3098 * Set a single color register. The values supplied are already
3099 * rounded down to the hardware's capabilities (according to the
3100 * entries in the var structure). Return != 0 for invalid regno.
3103 static int amifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
3104 u_int transp, struct fb_info *info)
3109 } else if (currentpar.bplcon0 & BPC0_SHRES) {
3126 * Update the corresponding Hardware Color Register, unless it's Color
3127 * Register 0 and the screen is blanked.
3129 * VBlank is switched off to protect bplcon3 or ecs_palette[] from
3130 * being changed by ami_do_blank() during the VBlank.
3133 if (regno || !is_blanked) {
3134 #if defined(CONFIG_FB_AMIGA_AGA)
3136 u_short bplcon3 = currentpar.bplcon3;
3138 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000);
3139 custom.color[regno&31] = rgb2hw8_high(red, green, blue);
3140 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000) | BPC3_LOCT;
3141 custom.color[regno&31] = rgb2hw8_low(red, green, blue);
3142 custom.bplcon3 = bplcon3;
3146 #if defined(CONFIG_FB_AMIGA_ECS)
3147 if (currentpar.bplcon0 & BPC0_SHRES) {
3148 u_short color, mask;
3152 color = rgb2hw2(red, green, blue);
3154 for (i = regno+12; i >= (int)regno; i -= 4)
3155 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3156 mask <<=2; color >>= 2;
3157 regno = down16(regno)+mul4(mod4(regno));
3158 for (i = regno+3; i >= (int)regno; i--)
3159 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3163 custom.color[regno] = rgb2hw4(red, green, blue);
3168 static void ami_update_display(void)
3170 struct amifb_par *par = ¤tpar;
3172 custom.bplcon1 = par->bplcon1;
3173 custom.bpl1mod = par->bpl1mod;
3174 custom.bpl2mod = par->bpl2mod;
3175 custom.ddfstrt = ddfstrt2hw(par->ddfstrt);
3176 custom.ddfstop = ddfstop2hw(par->ddfstop);
3180 * Change the video mode (called by VBlank interrupt)
3183 static void ami_init_display(void)
3185 struct amifb_par *par = ¤tpar;
3188 custom.bplcon0 = par->bplcon0 & ~BPC0_LACE;
3189 custom.bplcon2 = (IS_OCS ? 0 : BPC2_KILLEHB) | BPC2_PF2P2 | BPC2_PF1P2;
3191 custom.bplcon3 = par->bplcon3;
3193 custom.bplcon4 = BPC4_ESPRM4 | BPC4_OSPRM4;
3194 if (par->beamcon0 & BMC0_VARBEAMEN) {
3195 custom.htotal = htotal2hw(par->htotal);
3196 custom.hbstrt = hbstrt2hw(par->hbstrt);
3197 custom.hbstop = hbstop2hw(par->hbstop);
3198 custom.hsstrt = hsstrt2hw(par->hsstrt);
3199 custom.hsstop = hsstop2hw(par->hsstop);
3200 custom.hcenter = hcenter2hw(par->hcenter);
3201 custom.vtotal = vtotal2hw(par->vtotal);
3202 custom.vbstrt = vbstrt2hw(par->vbstrt);
3203 custom.vbstop = vbstop2hw(par->vbstop);
3204 custom.vsstrt = vsstrt2hw(par->vsstrt);
3205 custom.vsstop = vsstop2hw(par->vsstop);
3208 if (!IS_OCS || par->hsstop)
3209 custom.beamcon0 = par->beamcon0;
3211 custom.fmode = par->fmode;
3214 * The minimum period for audio depends on htotal
3217 amiga_audio_min_period = div16(par->htotal);
3219 is_lace = par->bplcon0 & BPC0_LACE ? 1 : 0;
3222 i = custom.vposr >> 15;
3224 custom.vposw = custom.vposr | 0x8000;
3229 custom.vposw = custom.vposr | 0x8000;
3231 custom.cop2lc = (u_short *)ZTWO_PADDR(copdisplay.list[currentcop][i]);
3235 * (Un)Blank the screen (called by VBlank interrupt)
3238 static void ami_do_blank(void)
3240 struct amifb_par *par = ¤tpar;
3241 #if defined(CONFIG_FB_AMIGA_AGA)
3242 u_short bplcon3 = par->bplcon3;
3244 u_char red, green, blue;
3247 custom.dmacon = DMAF_RASTER | DMAF_SPRITE;
3248 red = green = blue = 0;
3249 if (!IS_OCS && do_blank > 1) {
3251 case FB_BLANK_VSYNC_SUSPEND:
3252 custom.hsstrt = hsstrt2hw(par->hsstrt);
3253 custom.hsstop = hsstop2hw(par->hsstop);
3254 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3255 custom.vsstop = vsstop2hw(par->vtotal+4);
3257 case FB_BLANK_HSYNC_SUSPEND:
3258 custom.hsstrt = hsstrt2hw(par->htotal+16);
3259 custom.hsstop = hsstop2hw(par->htotal+16);
3260 custom.vsstrt = vsstrt2hw(par->vsstrt);
3261 custom.vsstop = vsstrt2hw(par->vsstop);
3263 case FB_BLANK_POWERDOWN:
3264 custom.hsstrt = hsstrt2hw(par->htotal+16);
3265 custom.hsstop = hsstop2hw(par->htotal+16);
3266 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3267 custom.vsstop = vsstop2hw(par->vtotal+4);
3270 if (!(par->beamcon0 & BMC0_VARBEAMEN)) {
3271 custom.htotal = htotal2hw(par->htotal);
3272 custom.vtotal = vtotal2hw(par->vtotal);
3273 custom.beamcon0 = BMC0_HARDDIS | BMC0_VARBEAMEN |
3274 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARCSYEN;
3278 custom.dmacon = DMAF_SETCLR | DMAF_RASTER | DMAF_SPRITE;
3283 custom.hsstrt = hsstrt2hw(par->hsstrt);
3284 custom.hsstop = hsstop2hw(par->hsstop);
3285 custom.vsstrt = vsstrt2hw(par->vsstrt);
3286 custom.vsstop = vsstop2hw(par->vsstop);
3287 custom.beamcon0 = par->beamcon0;
3290 #if defined(CONFIG_FB_AMIGA_AGA)
3292 custom.bplcon3 = bplcon3;
3293 custom.color[0] = rgb2hw8_high(red, green, blue);
3294 custom.bplcon3 = bplcon3 | BPC3_LOCT;
3295 custom.color[0] = rgb2hw8_low(red, green, blue);
3296 custom.bplcon3 = bplcon3;
3299 #if defined(CONFIG_FB_AMIGA_ECS)
3300 if (par->bplcon0 & BPC0_SHRES) {
3301 u_short color, mask;
3305 color = rgb2hw2(red, green, blue);
3306 for (i = 12; i >= 0; i -= 4)
3307 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3308 mask <<=2; color >>= 2;
3309 for (i = 3; i >= 0; i--)
3310 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3313 custom.color[0] = rgb2hw4(red, green, blue);
3314 is_blanked = do_blank > 0 ? do_blank : 0;
3317 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix)
3319 struct amifb_par *par = ¤tpar;
3321 fix->crsr_width = fix->crsr_xsize = par->crsr.width;
3322 fix->crsr_height = fix->crsr_ysize = par->crsr.height;
3323 fix->crsr_color1 = 17;
3324 fix->crsr_color2 = 18;
3328 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char *data)
3330 struct amifb_par *par = ¤tpar;
3331 register u_short *lspr, *sspr;
3333 register u_long datawords asm ("d2");
3335 register u_long datawords;
3337 register short delta;
3338 register u_char color;
3339 short height, width, bits, words;
3342 size = par->crsr.height*par->crsr.width;
3343 alloc = var->height*var->width;
3344 var->height = par->crsr.height;
3345 var->width = par->crsr.width;
3346 var->xspot = par->crsr.spot_x;
3347 var->yspot = par->crsr.spot_y;
3348 if (size > var->height*var->width)
3349 return -ENAMETOOLONG;
3350 if (!access_ok(VERIFY_WRITE, (void *)data, size))
3352 delta = 1<<par->crsr.fmode;
3353 lspr = lofsprite + (delta<<1);
3354 if (par->bplcon0 & BPC0_LACE)
3355 sspr = shfsprite + (delta<<1);
3358 for (height = (short)var->height-1; height >= 0; height--) {
3359 bits = 0; words = delta; datawords = 0;
3360 for (width = (short)var->width-1; width >= 0; width--) {
3364 asm volatile ("movew %1@(%3:w:2),%0 ; swap %0 ; movew %1@+,%0"
3365 : "=d" (datawords), "=a" (lspr) : "1" (lspr), "d" (delta));
3367 datawords = (*(lspr+delta) << 16) | (*lspr++);
3373 "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; "
3374 "swap %1 ; lslw #1,%1 ; roxlb #1,%0"
3375 : "=d" (color), "=d" (datawords) : "1" (datawords));
3377 color = (((datawords >> 30) & 2)
3378 | ((datawords >> 15) & 1));
3381 put_user(color, data++);
3386 while (--words >= 0)
3389 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3390 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3394 u_short *tmp = lspr;
3403 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char *data)
3405 struct amifb_par *par = ¤tpar;
3406 register u_short *lspr, *sspr;
3408 register u_long datawords asm ("d2");
3410 register u_long datawords;
3412 register short delta;
3414 short height, width, bits, words;
3418 else if (var->width <= 16)
3419 fmode = TAG_FMODE_1;
3420 else if (var->width <= 32)
3421 fmode = TAG_FMODE_2;
3422 else if (var->width <= 64)
3423 fmode = TAG_FMODE_4;
3426 if (fmode > maxfmode)
3430 if (!access_ok(VERIFY_READ, (void *)data, var->width*var->height))
3433 lofsprite = shfsprite = (u_short *)spritememory;
3434 lspr = lofsprite + (delta<<1);
3435 if (par->bplcon0 & BPC0_LACE) {
3436 if (((var->height+4)<<fmode<<2) > SPRITEMEMSIZE)
3438 memset(lspr, 0, (var->height+4)<<fmode<<2);
3439 shfsprite += ((var->height+5)&-2)<<fmode;
3440 sspr = shfsprite + (delta<<1);
3442 if (((var->height+2)<<fmode<<2) > SPRITEMEMSIZE)
3444 memset(lspr, 0, (var->height+2)<<fmode<<2);
3447 for (height = (short)var->height-1; height >= 0; height--) {
3448 bits = 16; words = delta; datawords = 0;
3449 for (width = (short)var->width-1; width >= 0; width--) {
3450 unsigned long tdata = 0;
3451 get_user(tdata, (char *)data);
3455 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0 ; "
3456 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0"
3458 : "0" (datawords), "d" (tdata));
3460 datawords = ((datawords << 1) & 0xfffefffe);
3461 datawords |= tdata & 1;
3462 datawords |= (tdata & 2) << (16-1);
3467 asm volatile ("swap %2 ; movew %2,%0@(%3:w:2) ; swap %2 ; movew %2,%0@+"
3468 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta));
3470 *(lspr+delta) = (u_short) (datawords >> 16);
3471 *lspr++ = (u_short) (datawords & 0xffff);
3479 "swap %2 ; lslw %4,%2 ; movew %2,%0@(%3:w:2) ; "
3480 "swap %2 ; lslw %4,%2 ; movew %2,%0@+"
3481 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta), "d" (bits));
3483 *(lspr+delta) = (u_short) (datawords >> (16+bits));
3484 *lspr++ = (u_short) ((datawords & 0x0000ffff) >> bits);
3487 while (--words >= 0) {
3489 asm volatile ("moveql #0,%%d0 ; movew %%d0,%0@(%2:w:2) ; movew %%d0,%0@+"
3490 : "=a" (lspr) : "0" (lspr), "d" (delta) : "d0");
3497 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3498 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3502 u_short *tmp = lspr;
3508 par->crsr.height = var->height;
3509 par->crsr.width = var->width;
3510 par->crsr.spot_x = var->xspot;
3511 par->crsr.spot_y = var->yspot;
3512 par->crsr.fmode = fmode;
3514 par->fmode &= ~(FMODE_SPAGEM | FMODE_SPR32);
3515 par->fmode |= sprfetchmode[fmode];
3516 custom.fmode = par->fmode;
3521 static int ami_get_cursorstate(struct fb_cursorstate *state)
3523 struct amifb_par *par = ¤tpar;
3525 state->xoffset = par->crsr.crsr_x;
3526 state->yoffset = par->crsr.crsr_y;
3527 state->mode = cursormode;
3531 static int ami_set_cursorstate(struct fb_cursorstate *state)
3533 struct amifb_par *par = ¤tpar;
3535 par->crsr.crsr_x = state->xoffset;
3536 par->crsr.crsr_y = state->yoffset;
3537 if ((cursormode = state->mode) == FB_CURSOR_OFF)
3543 static void ami_set_sprite(void)
3545 struct amifb_par *par = ¤tpar;
3546 copins *copl, *cops;
3551 cops = copdisplay.list[currentcop][0];
3552 copl = copdisplay.list[currentcop][1];
3553 ps = pl = ZTWO_PADDR(dummysprite);
3554 mx = par->crsr.crsr_x-par->crsr.spot_x;
3555 my = par->crsr.crsr_y-par->crsr.spot_y;
3556 if (!(par->vmode & FB_VMODE_YWRAP)) {
3560 if (!is_blanked && cursorstate > 0 && par->crsr.height > 0 &&
3561 mx > -(short)par->crsr.width && mx < par->xres &&
3562 my > -(short)par->crsr.height && my < par->yres) {
3563 pl = ZTWO_PADDR(lofsprite);
3564 hs = par->diwstrt_h + (mx<<par->clk_shift) - 4;
3565 vs = par->diwstrt_v + (my<<par->line_shift);
3566 ve = vs + (par->crsr.height<<par->line_shift);
3567 if (par->bplcon0 & BPC0_LACE) {
3568 ps = ZTWO_PADDR(shfsprite);
3569 lofsprite[0] = spr2hw_pos(vs, hs);
3570 shfsprite[0] = spr2hw_pos(vs+1, hs);
3572 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3573 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve+1);
3574 pt = pl; pl = ps; ps = pt;
3576 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve+1);
3577 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve);
3580 lofsprite[0] = spr2hw_pos(vs, hs) | (IS_AGA && (par->fmode & FMODE_BSCAN2) ? 0x80 : 0);
3581 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3584 copl[cop_spr0ptrh].w[1] = highw(pl);
3585 copl[cop_spr0ptrl].w[1] = loww(pl);
3586 if (par->bplcon0 & BPC0_LACE) {
3587 cops[cop_spr0ptrh].w[1] = highw(ps);
3588 cops[cop_spr0ptrl].w[1] = loww(ps);
3594 * Initialise the Copper Initialisation List
3597 static void __init ami_init_copper(void)
3599 copins *cop = copdisplay.init;
3604 (cop++)->l = CMOVE(BPC0_COLOR | BPC0_SHRES | BPC0_ECSENA, bplcon0);
3605 (cop++)->l = CMOVE(0x0181, diwstrt);
3606 (cop++)->l = CMOVE(0x0281, diwstop);
3607 (cop++)->l = CMOVE(0x0000, diwhigh);
3609 (cop++)->l = CMOVE(BPC0_COLOR, bplcon0);
3610 p = ZTWO_PADDR(dummysprite);
3611 for (i = 0; i < 8; i++) {
3612 (cop++)->l = CMOVE(0, spr[i].pos);
3613 (cop++)->l = CMOVE(highw(p), sprpt[i]);
3614 (cop++)->l = CMOVE2(loww(p), sprpt[i]);
3617 (cop++)->l = CMOVE(IF_SETCLR | IF_COPER, intreq);
3618 copdisplay.wait = cop;
3620 (cop++)->l = CMOVE(0, copjmp2);
3623 custom.cop1lc = (u_short *)ZTWO_PADDR(copdisplay.init);
3627 static void ami_reinit_copper(void)
3629 struct amifb_par *par = ¤tpar;
3631 copdisplay.init[cip_bplcon0].w[1] = ~(BPC0_BPU3 | BPC0_BPU2 | BPC0_BPU1 | BPC0_BPU0) & par->bplcon0;
3632 copdisplay.wait->l = CWAIT(32, par->diwstrt_v-4);
3636 * Build the Copper List
3639 static void ami_build_copper(void)
3641 struct amifb_par *par = ¤tpar;
3642 copins *copl, *cops;
3645 currentcop = 1 - currentcop;
3647 copl = copdisplay.list[currentcop][1];
3649 (copl++)->l = CWAIT(0, 10);
3650 (copl++)->l = CMOVE(par->bplcon0, bplcon0);
3651 (copl++)->l = CMOVE(0, sprpt[0]);
3652 (copl++)->l = CMOVE2(0, sprpt[0]);
3654 if (par->bplcon0 & BPC0_LACE) {
3655 cops = copdisplay.list[currentcop][0];
3657 (cops++)->l = CWAIT(0, 10);
3658 (cops++)->l = CMOVE(par->bplcon0, bplcon0);
3659 (cops++)->l = CMOVE(0, sprpt[0]);
3660 (cops++)->l = CMOVE2(0, sprpt[0]);
3662 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v+1), diwstrt);
3663 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v+1), diwstop);
3664 (cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3665 (cops++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3667 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v+1,
3668 par->diwstop_h, par->diwstop_v+1), diwhigh);
3669 (cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3670 par->diwstop_h, par->diwstop_v), diwhigh);
3672 if (par->beamcon0 & BMC0_VARBEAMEN) {
3673 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3674 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt+1), vbstrt);
3675 (copl++)->l = CMOVE(vbstop2hw(par->vbstop+1), vbstop);
3676 (cops++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3677 (cops++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3678 (cops++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3682 p = ZTWO_PADDR(copdisplay.list[currentcop][0]);
3683 (copl++)->l = CMOVE(highw(p), cop2lc);
3684 (copl++)->l = CMOVE2(loww(p), cop2lc);
3685 p = ZTWO_PADDR(copdisplay.list[currentcop][1]);
3686 (cops++)->l = CMOVE(highw(p), cop2lc);
3687 (cops++)->l = CMOVE2(loww(p), cop2lc);
3688 copdisplay.rebuild[0] = cops;
3690 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3691 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3693 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3694 par->diwstop_h, par->diwstop_v), diwhigh);
3696 if (par->beamcon0 & BMC0_VARBEAMEN) {
3697 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3698 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3699 (copl++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3704 copdisplay.rebuild[1] = copl;
3707 ami_rebuild_copper();
3711 * Rebuild the Copper List
3713 * We only change the things that are not static
3716 static void ami_rebuild_copper(void)
3718 struct amifb_par *par = ¤tpar;
3719 copins *copl, *cops;
3720 u_short line, h_end1, h_end2;
3724 if (IS_AGA && maxfmode + par->clk_shift == 0)
3725 h_end1 = par->diwstrt_h-64;
3727 h_end1 = par->htotal-32;
3728 h_end2 = par->ddfstop+64;
3732 copl = copdisplay.rebuild[1];
3734 if (par->vmode & FB_VMODE_YWRAP) {
3735 if ((par->vyres-par->yoffset) != 1 || !mod2(par->diwstrt_v)) {
3736 if (par->yoffset > par->vyres-par->yres) {
3737 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3738 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3739 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3741 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 1;
3742 while (line >= 512) {
3743 (copl++)->l = CWAIT(h_end1, 510);
3746 if (line >= 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3747 (copl++)->l = CWAIT(h_end1, line);
3749 (copl++)->l = CWAIT(h_end2, line);
3750 p = par->bplpt0wrap;
3752 } else p = par->bplpt0wrap;
3754 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3755 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3756 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3760 if (par->bplcon0 & BPC0_LACE) {
3761 cops = copdisplay.rebuild[0];
3763 if (mod2(par->diwstrt_v))
3764 p -= par->next_line;
3766 p += par->next_line;
3767 if (par->vmode & FB_VMODE_YWRAP) {
3768 if ((par->vyres-par->yoffset) != 1 || mod2(par->diwstrt_v)) {
3769 if (par->yoffset > par->vyres-par->yres+1) {
3770 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3771 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3772 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3774 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 2;
3775 while (line >= 512) {
3776 (cops++)->l = CWAIT(h_end1, 510);
3779 if (line > 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3780 (cops++)->l = CWAIT(h_end1, line);
3782 (cops++)->l = CWAIT(h_end2, line);
3783 p = par->bplpt0wrap;
3784 if (mod2(par->diwstrt_v+par->vyres-par->yoffset))
3785 p -= par->next_line;
3787 p += par->next_line;
3789 } else p = par->bplpt0wrap - par->next_line;
3791 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3792 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3793 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3800 module_init(amifb_init);
3803 MODULE_LICENSE("GPL");
3805 void cleanup_module(void)
3807 unregister_framebuffer(&fb_info);