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_cursor = soft_cursor,
1189 .fb_ioctl = amifb_ioctl,
1192 static void __init amifb_setup_mcap(char *spec)
1195 int vmin, vmax, hmin, hmax;
1197 /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax>
1198 * <V*> vertical freq. in Hz
1199 * <H*> horizontal freq. in kHz
1202 if (!(p = strsep(&spec, ";")) || !*p)
1204 vmin = simple_strtoul(p, NULL, 10);
1207 if (!(p = strsep(&spec, ";")) || !*p)
1209 vmax = simple_strtoul(p, NULL, 10);
1210 if (vmax <= 0 || vmax <= vmin)
1212 if (!(p = strsep(&spec, ";")) || !*p)
1214 hmin = 1000 * simple_strtoul(p, NULL, 10);
1217 if (!(p = strsep(&spec, "")) || !*p)
1219 hmax = 1000 * simple_strtoul(p, NULL, 10);
1220 if (hmax <= 0 || hmax <= hmin)
1223 fb_info.monspecs.vfmin = vmin;
1224 fb_info.monspecs.vfmax = vmax;
1225 fb_info.monspecs.hfmin = hmin;
1226 fb_info.monspecs.hfmax = hmax;
1229 int __init amifb_setup(char *options)
1233 if (!options || !*options)
1236 while ((this_opt = strsep(&options, ",")) != NULL) {
1239 if (!strcmp(this_opt, "inverse")) {
1242 } else if (!strcmp(this_opt, "ilbm"))
1244 else if (!strncmp(this_opt, "monitorcap:", 11))
1245 amifb_setup_mcap(this_opt+11);
1246 else if (!strncmp(this_opt, "fstart:", 7))
1247 min_fstrt = simple_strtoul(this_opt+7, NULL, 0);
1249 mode_option = this_opt;
1259 static int amifb_check_var(struct fb_var_screeninfo *var,
1260 struct fb_info *info)
1263 struct amifb_par par;
1265 /* Validate wanted screen parameters */
1266 if ((err = ami_decode_var(var, &par)))
1269 /* Encode (possibly rounded) screen parameters */
1270 ami_encode_var(var, &par);
1275 static int amifb_set_par(struct fb_info *info)
1277 struct amifb_par *par = (struct amifb_par *)info->par;
1282 /* Decode wanted screen parameters */
1283 ami_decode_var(&info->var, par);
1285 /* Set new videomode */
1288 /* Set VBlank trigger */
1291 /* Update fix for new screen parameters */
1292 if (par->bpp == 1) {
1293 info->fix.type = FB_TYPE_PACKED_PIXELS;
1294 info->fix.type_aux = 0;
1295 } else if (amifb_ilbm) {
1296 info->fix.type = FB_TYPE_INTERLEAVED_PLANES;
1297 info->fix.type_aux = par->next_line;
1299 info->fix.type = FB_TYPE_PLANES;
1300 info->fix.type_aux = 0;
1302 info->fix.line_length = div8(upx(16<<maxfmode, par->vxres));
1304 if (par->vmode & FB_VMODE_YWRAP) {
1305 info->fix.ywrapstep = 1;
1306 info->fix.xpanstep = 0;
1307 info->fix.ypanstep = 0;
1308 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YWRAP |
1309 FBINFO_READS_FAST; /* override SCROLL_REDRAW */
1311 info->fix.ywrapstep = 0;
1312 if (par->vmode & FB_VMODE_SMOOTH_XPAN)
1313 info->fix.xpanstep = 1;
1315 info->fix.xpanstep = 16<<maxfmode;
1316 info->fix.ypanstep = 1;
1317 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1324 * Pan or Wrap the Display
1326 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1329 static int amifb_pan_display(struct fb_var_screeninfo *var,
1330 struct fb_info *info)
1332 if (var->vmode & FB_VMODE_YWRAP) {
1333 if (var->yoffset < 0 ||
1334 var->yoffset >= info->var.yres_virtual || var->xoffset)
1338 * TODO: There will be problems when xpan!=1, so some columns
1339 * on the right side will never be seen
1341 if (var->xoffset+info->var.xres > upx(16<<maxfmode, info->var.xres_virtual) ||
1342 var->yoffset+info->var.yres > info->var.yres_virtual)
1346 info->var.xoffset = var->xoffset;
1347 info->var.yoffset = var->yoffset;
1348 if (var->vmode & FB_VMODE_YWRAP)
1349 info->var.vmode |= FB_VMODE_YWRAP;
1351 info->var.vmode &= ~FB_VMODE_YWRAP;
1356 #if BITS_PER_LONG == 32
1357 #define BYTES_PER_LONG 4
1358 #define SHIFT_PER_LONG 5
1359 #elif BITS_PER_LONG == 64
1360 #define BYTES_PER_LONG 8
1361 #define SHIFT_PER_LONG 6
1363 #define Please update me
1368 * Compose two values, using a bitmask as decision value
1369 * This is equivalent to (a & mask) | (b & ~mask)
1372 static inline unsigned long comp(unsigned long a, unsigned long b,
1375 return ((a ^ b) & mask) ^ b;
1379 static inline unsigned long xor(unsigned long a, unsigned long b,
1382 return (a & mask) ^ b;
1387 * Unaligned forward bit copy using 32-bit or 64-bit memory accesses
1390 static void bitcpy(unsigned long *dst, int dst_idx, const unsigned long *src,
1393 unsigned long first, last;
1394 int shift = dst_idx-src_idx, left, right;
1395 unsigned long d0, d1;
1401 shift = dst_idx-src_idx;
1402 first = ~0UL >> dst_idx;
1403 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1406 // Same alignment for source and dest
1408 if (dst_idx+n <= BITS_PER_LONG) {
1412 *dst = comp(*src, *dst, first);
1414 // Multiple destination words
1417 *dst = comp(*src, *dst, first);
1420 n -= BITS_PER_LONG-dst_idx;
1441 *dst = comp(*src, *dst, last);
1444 // Different alignment for source and dest
1446 right = shift & (BITS_PER_LONG-1);
1447 left = -shift & (BITS_PER_LONG-1);
1449 if (dst_idx+n <= BITS_PER_LONG) {
1450 // Single destination word
1454 // Single source word
1455 *dst = comp(*src >> right, *dst, first);
1456 } else if (src_idx+n <= BITS_PER_LONG) {
1457 // Single source word
1458 *dst = comp(*src << left, *dst, first);
1463 *dst = comp(d0 << left | d1 >> right, *dst,
1467 // Multiple destination words
1471 // Single source word
1472 *dst = comp(d0 >> right, *dst, first);
1474 n -= BITS_PER_LONG-dst_idx;
1478 *dst = comp(d0 << left | d1 >> right, *dst,
1482 n -= BITS_PER_LONG-dst_idx;
1486 m = n % BITS_PER_LONG;
1490 *dst++ = d0 << left | d1 >> right;
1493 *dst++ = d0 << left | d1 >> right;
1496 *dst++ = d0 << left | d1 >> right;
1499 *dst++ = d0 << left | d1 >> right;
1505 *dst++ = d0 << left | d1 >> right;
1512 // Single source word
1513 *dst = comp(d0 << left, *dst, last);
1517 *dst = comp(d0 << left | d1 >> right,
1527 * Unaligned reverse bit copy using 32-bit or 64-bit memory accesses
1530 static void bitcpy_rev(unsigned long *dst, int dst_idx,
1531 const unsigned long *src, int src_idx, u32 n)
1533 unsigned long first, last;
1534 int shift = dst_idx-src_idx, left, right;
1535 unsigned long d0, d1;
1541 dst += (n-1)/BITS_PER_LONG;
1542 src += (n-1)/BITS_PER_LONG;
1543 if ((n-1) % BITS_PER_LONG) {
1544 dst_idx += (n-1) % BITS_PER_LONG;
1545 dst += dst_idx >> SHIFT_PER_LONG;
1546 dst_idx &= BITS_PER_LONG-1;
1547 src_idx += (n-1) % BITS_PER_LONG;
1548 src += src_idx >> SHIFT_PER_LONG;
1549 src_idx &= BITS_PER_LONG-1;
1552 shift = dst_idx-src_idx;
1553 first = ~0UL << (BITS_PER_LONG-1-dst_idx);
1554 last = ~(~0UL << (BITS_PER_LONG-1-((dst_idx-n) % BITS_PER_LONG)));
1557 // Same alignment for source and dest
1559 if ((unsigned long)dst_idx+1 >= n) {
1563 *dst = comp(*src, *dst, first);
1565 // Multiple destination words
1568 *dst = comp(*src, *dst, first);
1592 *dst = comp(*src, *dst, last);
1595 // Different alignment for source and dest
1597 right = shift & (BITS_PER_LONG-1);
1598 left = -shift & (BITS_PER_LONG-1);
1600 if ((unsigned long)dst_idx+1 >= n) {
1601 // Single destination word
1605 // Single source word
1606 *dst = comp(*src << left, *dst, first);
1607 } else if (1+(unsigned long)src_idx >= n) {
1608 // Single source word
1609 *dst = comp(*src >> right, *dst, first);
1614 *dst = comp(d0 >> right | d1 << left, *dst,
1618 // Multiple destination words
1622 // Single source word
1623 *dst = comp(d0 << left, *dst, first);
1629 *dst = comp(d0 >> right | d1 << left, *dst,
1637 m = n % BITS_PER_LONG;
1641 *dst-- = d0 >> right | d1 << left;
1644 *dst-- = d0 >> right | d1 << left;
1647 *dst-- = d0 >> right | d1 << left;
1650 *dst-- = d0 >> right | d1 << left;
1656 *dst-- = d0 >> right | d1 << left;
1663 // Single source word
1664 *dst = comp(d0 >> right, *dst, last);
1668 *dst = comp(d0 >> right | d1 << left,
1678 * Unaligned forward inverting bit copy using 32-bit or 64-bit memory
1682 static void bitcpy_not(unsigned long *dst, int dst_idx,
1683 const unsigned long *src, int src_idx, u32 n)
1685 unsigned long first, last;
1686 int shift = dst_idx-src_idx, left, right;
1687 unsigned long d0, d1;
1693 shift = dst_idx-src_idx;
1694 first = ~0UL >> dst_idx;
1695 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1698 // Same alignment for source and dest
1700 if (dst_idx+n <= BITS_PER_LONG) {
1704 *dst = comp(~*src, *dst, first);
1706 // Multiple destination words
1709 *dst = comp(~*src, *dst, first);
1712 n -= BITS_PER_LONG-dst_idx;
1733 *dst = comp(~*src, *dst, last);
1736 // Different alignment for source and dest
1738 right = shift & (BITS_PER_LONG-1);
1739 left = -shift & (BITS_PER_LONG-1);
1741 if (dst_idx+n <= BITS_PER_LONG) {
1742 // Single destination word
1746 // Single source word
1747 *dst = comp(~*src >> right, *dst, first);
1748 } else if (src_idx+n <= BITS_PER_LONG) {
1749 // Single source word
1750 *dst = comp(~*src << left, *dst, first);
1755 *dst = comp(d0 << left | d1 >> right, *dst,
1759 // Multiple destination words
1763 // Single source word
1764 *dst = comp(d0 >> right, *dst, first);
1766 n -= BITS_PER_LONG-dst_idx;
1770 *dst = comp(d0 << left | d1 >> right, *dst,
1774 n -= BITS_PER_LONG-dst_idx;
1778 m = n % BITS_PER_LONG;
1782 *dst++ = d0 << left | d1 >> right;
1785 *dst++ = d0 << left | d1 >> right;
1788 *dst++ = d0 << left | d1 >> right;
1791 *dst++ = d0 << left | d1 >> right;
1797 *dst++ = d0 << left | d1 >> right;
1804 // Single source word
1805 *dst = comp(d0 << left, *dst, last);
1809 *dst = comp(d0 << left | d1 >> right,
1819 * Unaligned 32-bit pattern fill using 32/64-bit memory accesses
1822 static void bitfill32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1824 unsigned long val = pat;
1825 unsigned long first, last;
1830 #if BITS_PER_LONG == 64
1834 first = ~0UL >> dst_idx;
1835 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1837 if (dst_idx+n <= BITS_PER_LONG) {
1841 *dst = comp(val, *dst, first);
1843 // Multiple destination words
1846 *dst = comp(val, *dst, first);
1848 n -= BITS_PER_LONG-dst_idx;
1869 *dst = comp(val, *dst, last);
1875 * Unaligned 32-bit pattern xor using 32/64-bit memory accesses
1878 static void bitxor32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1880 unsigned long val = pat;
1881 unsigned long first, last;
1886 #if BITS_PER_LONG == 64
1890 first = ~0UL >> dst_idx;
1891 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1893 if (dst_idx+n <= BITS_PER_LONG) {
1897 *dst = xor(val, *dst, first);
1899 // Multiple destination words
1902 *dst = xor(val, *dst, first);
1904 n -= BITS_PER_LONG-dst_idx;
1921 *dst = xor(val, *dst, last);
1925 static inline void fill_one_line(int bpp, unsigned long next_plane,
1926 unsigned long *dst, int dst_idx, u32 n,
1930 dst += dst_idx >> SHIFT_PER_LONG;
1931 dst_idx &= (BITS_PER_LONG-1);
1932 bitfill32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1936 dst_idx += next_plane*8;
1940 static inline void xor_one_line(int bpp, unsigned long next_plane,
1941 unsigned long *dst, int dst_idx, u32 n,
1945 dst += dst_idx >> SHIFT_PER_LONG;
1946 dst_idx &= (BITS_PER_LONG-1);
1947 bitxor32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1951 dst_idx += next_plane*8;
1956 static void amifb_fillrect(struct fb_info *info,
1957 const struct fb_fillrect *rect)
1959 struct amifb_par *par = (struct amifb_par *)info->par;
1960 int dst_idx, x2, y2;
1964 if (!rect->width || !rect->height)
1968 * We could use hardware clipping but on many cards you get around
1969 * hardware clipping by writing to framebuffer directly.
1971 x2 = rect->dx + rect->width;
1972 y2 = rect->dy + rect->height;
1973 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
1974 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
1975 width = x2 - rect->dx;
1976 height = y2 - rect->dy;
1978 dst = (unsigned long *)
1979 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
1980 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
1981 dst_idx += rect->dy*par->next_line*8+rect->dx;
1983 switch (rect->rop) {
1985 fill_one_line(info->var.bits_per_pixel,
1986 par->next_plane, dst, dst_idx, width,
1991 xor_one_line(info->var.bits_per_pixel, par->next_plane,
1992 dst, dst_idx, width, rect->color);
1995 dst_idx += par->next_line*8;
1999 static inline void copy_one_line(int bpp, unsigned long next_plane,
2000 unsigned long *dst, int dst_idx,
2001 unsigned long *src, int src_idx, u32 n)
2004 dst += dst_idx >> SHIFT_PER_LONG;
2005 dst_idx &= (BITS_PER_LONG-1);
2006 src += src_idx >> SHIFT_PER_LONG;
2007 src_idx &= (BITS_PER_LONG-1);
2008 bitcpy(dst, dst_idx, src, src_idx, n);
2011 dst_idx += next_plane*8;
2012 src_idx += next_plane*8;
2016 static inline void copy_one_line_rev(int bpp, unsigned long next_plane,
2017 unsigned long *dst, int dst_idx,
2018 unsigned long *src, int src_idx, u32 n)
2021 dst += dst_idx >> SHIFT_PER_LONG;
2022 dst_idx &= (BITS_PER_LONG-1);
2023 src += src_idx >> SHIFT_PER_LONG;
2024 src_idx &= (BITS_PER_LONG-1);
2025 bitcpy_rev(dst, dst_idx, src, src_idx, n);
2028 dst_idx += next_plane*8;
2029 src_idx += next_plane*8;
2034 static void amifb_copyarea(struct fb_info *info,
2035 const struct fb_copyarea *area)
2037 struct amifb_par *par = (struct amifb_par *)info->par;
2039 u32 dx, dy, sx, sy, width, height;
2040 unsigned long *dst, *src;
2041 int dst_idx, src_idx;
2044 /* clip the destination */
2045 x2 = area->dx + area->width;
2046 y2 = area->dy + area->height;
2047 dx = area->dx > 0 ? area->dx : 0;
2048 dy = area->dy > 0 ? area->dy : 0;
2049 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2050 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2055 sx = area->sx + (dx - area->dx);
2056 sy = area->sy + (dy - area->dy);
2058 /* the source must be completely inside the virtual screen */
2059 if (sx < 0 || sy < 0 || (sx + width) > info->var.xres_virtual ||
2060 (sy + height) > info->var.yres_virtual)
2063 if (dy > sy || (dy == sy && dx > sx)) {
2068 dst = (unsigned long *)
2069 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2071 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2073 dst_idx += dy*par->next_line*8+dx;
2074 src_idx += sy*par->next_line*8+sx;
2077 dst_idx -= par->next_line*8;
2078 src_idx -= par->next_line*8;
2079 copy_one_line_rev(info->var.bits_per_pixel,
2080 par->next_plane, dst, dst_idx, src,
2085 copy_one_line(info->var.bits_per_pixel,
2086 par->next_plane, dst, dst_idx, src,
2088 dst_idx += par->next_line*8;
2089 src_idx += par->next_line*8;
2095 static inline void expand_one_line(int bpp, unsigned long next_plane,
2096 unsigned long *dst, int dst_idx, u32 n,
2097 const u8 *data, u32 bgcolor, u32 fgcolor)
2099 const unsigned long *src;
2103 dst += dst_idx >> SHIFT_PER_LONG;
2104 dst_idx &= (BITS_PER_LONG-1);
2105 if ((bgcolor ^ fgcolor) & 1) {
2106 src = (unsigned long *)((unsigned long)data & ~(BYTES_PER_LONG-1));
2107 src_idx = ((unsigned long)data & (BYTES_PER_LONG-1))*8;
2109 bitcpy(dst, dst_idx, src, src_idx, n);
2111 bitcpy_not(dst, dst_idx, src, src_idx, n);
2114 bitfill32(dst, dst_idx, fgcolor & 1 ? ~0 : 0, n);
2119 dst_idx += next_plane*8;
2124 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
2126 struct amifb_par *par = (struct amifb_par *)info->par;
2131 u32 dx, dy, width, height, pitch;
2134 * We could use hardware clipping but on many cards you get around
2135 * hardware clipping by writing to framebuffer directly like we are
2138 x2 = image->dx + image->width;
2139 y2 = image->dy + image->height;
2142 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2143 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2147 if (image->depth == 1) {
2148 dst = (unsigned long *)
2149 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2150 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2151 dst_idx += dy*par->next_line*8+dx;
2153 pitch = (image->width+7)/8;
2155 expand_one_line(info->var.bits_per_pixel,
2156 par->next_plane, dst, dst_idx, width,
2157 src, image->bg_color,
2159 dst_idx += par->next_line*8;
2163 c2p(info->screen_base, image->data, dx, dy, width, height,
2164 par->next_line, par->next_plane, image->width,
2165 info->var.bits_per_pixel);
2171 * Amiga Frame Buffer Specific ioctls
2174 static int amifb_ioctl(struct inode *inode, struct file *file,
2175 unsigned int cmd, unsigned long arg,
2176 struct fb_info *info)
2179 struct fb_fix_cursorinfo fix;
2180 struct fb_var_cursorinfo var;
2181 struct fb_cursorstate state;
2186 case FBIOGET_FCURSORINFO:
2187 i = ami_get_fix_cursorinfo(&crsr.fix);
2190 return copy_to_user((void *)arg, &crsr.fix,
2191 sizeof(crsr.fix)) ? -EFAULT : 0;
2193 case FBIOGET_VCURSORINFO:
2194 i = ami_get_var_cursorinfo(&crsr.var,
2195 ((struct fb_var_cursorinfo *)arg)->data);
2198 return copy_to_user((void *)arg, &crsr.var,
2199 sizeof(crsr.var)) ? -EFAULT : 0;
2201 case FBIOPUT_VCURSORINFO:
2202 if (copy_from_user(&crsr.var, (void *)arg,
2205 return ami_set_var_cursorinfo(&crsr.var,
2206 ((struct fb_var_cursorinfo *)arg)->data);
2208 case FBIOGET_CURSORSTATE:
2209 i = ami_get_cursorstate(&crsr.state);
2212 return copy_to_user((void *)arg, &crsr.state,
2213 sizeof(crsr.state)) ? -EFAULT : 0;
2215 case FBIOPUT_CURSORSTATE:
2216 if (copy_from_user(&crsr.state, (void *)arg,
2217 sizeof(crsr.state)))
2219 return ami_set_cursorstate(&crsr.state);
2226 * Allocate, Clear and Align a Block of Chip Memory
2229 static u_long unaligned_chipptr = 0;
2231 static inline u_long __init chipalloc(u_long size)
2233 size += PAGE_SIZE-1;
2234 if (!(unaligned_chipptr = (u_long)amiga_chip_alloc(size,
2236 panic("No Chip RAM for frame buffer");
2237 memset((void *)unaligned_chipptr, 0, size);
2238 return PAGE_ALIGN(unaligned_chipptr);
2241 static inline void chipfree(void)
2243 if (unaligned_chipptr)
2244 amiga_chip_free((void *)unaligned_chipptr);
2252 int __init amifb_init(void)
2254 int tag, i, err = 0;
2259 char *option = NULL;
2261 if (fb_get_options("amifb", &option)) {
2265 amifb_setup(option);
2267 if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_VIDEO))
2271 * We request all registers starting from bplpt[0]
2273 if (!request_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120,
2274 "amifb [Denise/Lisa]"))
2277 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2279 switch (amiga_chipset) {
2280 #ifdef CONFIG_FB_AMIGA_OCS
2282 strcat(fb_info.fix.id, "OCS");
2285 maxdepth[TAG_SHRES] = 0; /* OCS means no SHRES */
2286 maxdepth[TAG_HIRES] = 4;
2287 maxdepth[TAG_LORES] = 6;
2288 maxfmode = TAG_FMODE_1;
2289 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2291 fb_info.fix.smem_len = VIDEOMEMSIZE_OCS;
2293 #endif /* CONFIG_FB_AMIGA_OCS */
2295 #ifdef CONFIG_FB_AMIGA_ECS
2297 strcat(fb_info.fix.id, "ECS");
2299 maxdepth[TAG_SHRES] = 2;
2300 maxdepth[TAG_HIRES] = 4;
2301 maxdepth[TAG_LORES] = 6;
2302 maxfmode = TAG_FMODE_1;
2303 if (AMIGAHW_PRESENT(AMBER_FF))
2304 defmode = amiga_vblank == 50 ? DEFMODE_AMBER_PAL
2305 : DEFMODE_AMBER_NTSC;
2307 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2309 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2310 VIDEOMEMSIZE_ECS_1M)
2311 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_2M;
2313 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_1M;
2315 #endif /* CONFIG_FB_AMIGA_ECS */
2317 #ifdef CONFIG_FB_AMIGA_AGA
2319 strcat(fb_info.fix.id, "AGA");
2321 maxdepth[TAG_SHRES] = 8;
2322 maxdepth[TAG_HIRES] = 8;
2323 maxdepth[TAG_LORES] = 8;
2324 maxfmode = TAG_FMODE_4;
2325 defmode = DEFMODE_AGA;
2326 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2327 VIDEOMEMSIZE_AGA_1M)
2328 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_2M;
2330 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_1M;
2332 #endif /* CONFIG_FB_AMIGA_AGA */
2335 #ifdef CONFIG_FB_AMIGA_OCS
2336 printk("Unknown graphics chipset, defaulting to OCS\n");
2337 strcat(fb_info.fix.id, "Unknown");
2338 goto default_chipset;
2339 #else /* CONFIG_FB_AMIGA_OCS */
2342 #endif /* CONFIG_FB_AMIGA_OCS */
2347 * Calculate the Pixel Clock Values for this Machine
2351 u_long tmp = DIVUL(200000000000ULL, amiga_eclock);
2353 pixclock[TAG_SHRES] = (tmp + 4) / 8; /* SHRES: 35 ns / 28 MHz */
2354 pixclock[TAG_HIRES] = (tmp + 2) / 4; /* HIRES: 70 ns / 14 MHz */
2355 pixclock[TAG_LORES] = (tmp + 1) / 2; /* LORES: 140 ns / 7 MHz */
2359 * Replace the Tag Values with the Real Pixel Clock Values
2362 for (i = 0; i < NUM_TOTAL_MODES; i++) {
2363 struct fb_videomode *mode = &ami_modedb[i];
2364 tag = mode->pixclock;
2365 if (tag == TAG_SHRES || tag == TAG_HIRES || tag == TAG_LORES) {
2366 mode->pixclock = pixclock[tag];
2371 * These monitor specs are for a typical Amiga monitor (e.g. A1960)
2373 if (fb_info.monspecs.hfmin == 0) {
2374 fb_info.monspecs.hfmin = 15000;
2375 fb_info.monspecs.hfmax = 38000;
2376 fb_info.monspecs.vfmin = 49;
2377 fb_info.monspecs.vfmax = 90;
2380 fb_info.fbops = &amifb_ops;
2381 fb_info.par = ¤tpar;
2382 fb_info.flags = FBINFO_DEFAULT;
2384 if (!fb_find_mode(&fb_info.var, &fb_info, mode_option, ami_modedb,
2385 NUM_TOTAL_MODES, &ami_modedb[defmode], 4)) {
2391 chipptr = chipalloc(fb_info.fix.smem_len+
2397 assignchunk(videomemory, u_long, chipptr, fb_info.fix.smem_len);
2398 assignchunk(spritememory, u_long, chipptr, SPRITEMEMSIZE);
2399 assignchunk(dummysprite, u_short *, chipptr, DUMMYSPRITEMEMSIZE);
2400 assignchunk(copdisplay.init, copins *, chipptr, COPINITSIZE);
2401 assignchunk(copdisplay.list[0][0], copins *, chipptr, COPLISTSIZE);
2402 assignchunk(copdisplay.list[0][1], copins *, chipptr, COPLISTSIZE);
2403 assignchunk(copdisplay.list[1][0], copins *, chipptr, COPLISTSIZE);
2404 assignchunk(copdisplay.list[1][1], copins *, chipptr, COPLISTSIZE);
2407 * access the videomem with writethrough cache
2409 fb_info.fix.smem_start = (u_long)ZTWO_PADDR(videomemory);
2410 videomemory = (u_long)ioremap_writethrough(fb_info.fix.smem_start,
2411 fb_info.fix.smem_len);
2413 printk("amifb: WARNING! unable to map videomem cached writethrough\n");
2414 videomemory = ZTWO_VADDR(fb_info.fix.smem_start);
2417 fb_info.screen_base = (char *)videomemory;
2418 memset(dummysprite, 0, DUMMYSPRITEMEMSIZE);
2421 * Enable Display DMA
2424 custom.dmacon = DMAF_SETCLR | DMAF_MASTER | DMAF_RASTER | DMAF_COPPER |
2425 DMAF_BLITTER | DMAF_SPRITE;
2428 * Make sure the Copper has something to do
2433 if (request_irq(IRQ_AMIGA_COPPER, amifb_interrupt, 0,
2434 "fb vertb handler", ¤tpar)) {
2439 fb_alloc_cmap(&fb_info.cmap, 1<<fb_info.var.bits_per_pixel, 0);
2441 if (register_framebuffer(&fb_info) < 0) {
2446 printk("fb%d: %s frame buffer device, using %dK of video memory\n",
2447 fb_info.node, fb_info.fix.id, fb_info.fix.smem_len>>10);
2456 static void amifb_deinit(void)
2458 fb_dealloc_cmap(&fb_info.cmap);
2460 release_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120);
2461 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2466 * Blank the display.
2469 static int amifb_blank(int blank, struct fb_info *info)
2471 do_blank = blank ? blank : -1;
2477 * Flash the cursor (called by VBlank interrupt)
2480 static int flash_cursor(void)
2482 static int cursorcount = 1;
2484 if (cursormode == FB_CURSOR_FLASH) {
2485 if (!--cursorcount) {
2486 cursorstate = -cursorstate;
2487 cursorcount = cursorrate;
2496 * VBlank Display Interrupt
2499 static irqreturn_t amifb_interrupt(int irq, void *dev_id, struct pt_regs *fp)
2501 if (do_vmode_pan || do_vmode_full)
2502 ami_update_display();
2509 ami_rebuild_copper();
2510 do_cursor = do_vmode_pan = 0;
2511 } else if (do_cursor) {
2525 if (do_vmode_full) {
2526 ami_reinit_copper();
2532 /* --------------------------- Hardware routines --------------------------- */
2535 * Get the video params out of `var'. If a value doesn't fit, round
2536 * it up, if it's too big, return -EINVAL.
2539 static int ami_decode_var(struct fb_var_screeninfo *var,
2540 struct amifb_par *par)
2542 u_short clk_shift, line_shift;
2543 u_long maxfetchstop, fstrt, fsize, fconst, xres_n, yres_n;
2544 u_int htotal, vtotal;
2547 * Find a matching Pixel Clock
2550 for (clk_shift = TAG_SHRES; clk_shift <= TAG_LORES; clk_shift++)
2551 if (var->pixclock <= pixclock[clk_shift])
2553 if (clk_shift > TAG_LORES) {
2554 DPRINTK("pixclock too high\n");
2557 par->clk_shift = clk_shift;
2560 * Check the Geometry Values
2563 if ((par->xres = var->xres) < 64)
2565 if ((par->yres = var->yres) < 64)
2567 if ((par->vxres = var->xres_virtual) < par->xres)
2568 par->vxres = par->xres;
2569 if ((par->vyres = var->yres_virtual) < par->yres)
2570 par->vyres = par->yres;
2572 par->bpp = var->bits_per_pixel;
2576 if (par->bpp > maxdepth[clk_shift]) {
2577 if (round_down_bpp && maxdepth[clk_shift])
2578 par->bpp = maxdepth[clk_shift];
2580 DPRINTK("invalid bpp\n");
2584 } else if (var->nonstd == FB_NONSTD_HAM) {
2587 if (par->bpp != 6) {
2590 if (par->bpp != 8 || !IS_AGA) {
2591 DPRINTK("invalid bpp for ham mode\n");
2596 DPRINTK("unknown nonstd mode\n");
2601 * FB_VMODE_SMOOTH_XPAN will be cleared, if one of the folloing
2602 * checks failed and smooth scrolling is not possible
2605 par->vmode = var->vmode | FB_VMODE_SMOOTH_XPAN;
2606 switch (par->vmode & FB_VMODE_MASK) {
2607 case FB_VMODE_INTERLACED:
2610 case FB_VMODE_NONINTERLACED:
2613 case FB_VMODE_DOUBLE:
2615 DPRINTK("double mode only possible with aga\n");
2621 DPRINTK("unknown video mode\n");
2625 par->line_shift = line_shift;
2628 * Vertical and Horizontal Timings
2631 xres_n = par->xres<<clk_shift;
2632 yres_n = par->yres<<line_shift;
2633 par->htotal = down8((var->left_margin+par->xres+var->right_margin+var->hsync_len)<<clk_shift);
2634 par->vtotal = down2(((var->upper_margin+par->yres+var->lower_margin+var->vsync_len)<<line_shift)+1);
2637 par->bplcon3 = sprpixmode[clk_shift];
2640 if (var->sync & FB_SYNC_BROADCAST) {
2641 par->diwstop_h = par->htotal-((var->right_margin-var->hsync_len)<<clk_shift);
2643 par->diwstop_h += mod4(var->hsync_len);
2645 par->diwstop_h = down4(par->diwstop_h);
2647 par->diwstrt_h = par->diwstop_h - xres_n;
2648 par->diwstop_v = par->vtotal-((var->lower_margin-var->vsync_len)<<line_shift);
2649 par->diwstrt_v = par->diwstop_v - yres_n;
2650 if (par->diwstop_h >= par->htotal+8) {
2651 DPRINTK("invalid diwstop_h\n");
2654 if (par->diwstop_v > par->vtotal) {
2655 DPRINTK("invalid diwstop_v\n");
2660 /* Initialize sync with some reasonable values for pwrsave */
2671 if (par->vtotal > (PAL_VTOTAL+NTSC_VTOTAL)/2) {
2672 /* PAL video mode */
2673 if (par->htotal != PAL_HTOTAL) {
2674 DPRINTK("htotal invalid for pal\n");
2677 if (par->diwstrt_h < PAL_DIWSTRT_H) {
2678 DPRINTK("diwstrt_h too low for pal\n");
2681 if (par->diwstrt_v < PAL_DIWSTRT_V) {
2682 DPRINTK("diwstrt_v too low for pal\n");
2685 htotal = PAL_HTOTAL>>clk_shift;
2686 vtotal = PAL_VTOTAL>>1;
2688 par->beamcon0 = BMC0_PAL;
2689 par->bplcon3 |= BPC3_BRDRBLNK;
2690 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2691 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2692 par->beamcon0 = BMC0_PAL;
2694 } else if (amiga_vblank != 50) {
2695 DPRINTK("pal not supported by this chipset\n");
2700 * In the AGA chipset seems to be hardware bug with BPC3_BRDRBLNK
2701 * and NTSC activated, so than better let diwstop_h <= 1812
2703 if (par->htotal != NTSC_HTOTAL) {
2704 DPRINTK("htotal invalid for ntsc\n");
2707 if (par->diwstrt_h < NTSC_DIWSTRT_H) {
2708 DPRINTK("diwstrt_h too low for ntsc\n");
2711 if (par->diwstrt_v < NTSC_DIWSTRT_V) {
2712 DPRINTK("diwstrt_v too low for ntsc\n");
2715 htotal = NTSC_HTOTAL>>clk_shift;
2716 vtotal = NTSC_VTOTAL>>1;
2719 par->bplcon3 |= BPC3_BRDRBLNK;
2720 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2721 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2724 } else if (amiga_vblank != 60) {
2725 DPRINTK("ntsc not supported by this chipset\n");
2730 if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
2731 par->diwstrt_v >= 512 || par->diwstop_v < 256) {
2732 DPRINTK("invalid position for display on ocs\n");
2736 } else if (!IS_OCS) {
2737 /* Programmable video mode */
2738 par->hsstrt = var->right_margin<<clk_shift;
2739 par->hsstop = (var->right_margin+var->hsync_len)<<clk_shift;
2740 par->diwstop_h = par->htotal - mod8(par->hsstrt) + 8 - (1 << clk_shift);
2742 par->diwstop_h = down4(par->diwstop_h) - 16;
2743 par->diwstrt_h = par->diwstop_h - xres_n;
2744 par->hbstop = par->diwstrt_h + 4;
2745 par->hbstrt = par->diwstop_h + 4;
2746 if (par->hbstrt >= par->htotal + 8)
2747 par->hbstrt -= par->htotal;
2748 par->hcenter = par->hsstrt + (par->htotal >> 1);
2749 par->vsstrt = var->lower_margin<<line_shift;
2750 par->vsstop = (var->lower_margin+var->vsync_len)<<line_shift;
2751 par->diwstop_v = par->vtotal;
2752 if ((par->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
2753 par->diwstop_v -= 2;
2754 par->diwstrt_v = par->diwstop_v - yres_n;
2755 par->vbstop = par->diwstrt_v - 2;
2756 par->vbstrt = par->diwstop_v - 2;
2757 if (par->vtotal > 2048) {
2758 DPRINTK("vtotal too high\n");
2761 if (par->htotal > 2048) {
2762 DPRINTK("htotal too high\n");
2765 par->bplcon3 |= BPC3_EXTBLKEN;
2766 par->beamcon0 = BMC0_HARDDIS | BMC0_VARVBEN | BMC0_LOLDIS |
2767 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARBEAMEN |
2768 BMC0_PAL | BMC0_VARCSYEN;
2769 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
2770 par->beamcon0 |= BMC0_HSYTRUE;
2771 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
2772 par->beamcon0 |= BMC0_VSYTRUE;
2773 if (var->sync & FB_SYNC_COMP_HIGH_ACT)
2774 par->beamcon0 |= BMC0_CSYTRUE;
2775 htotal = par->htotal>>clk_shift;
2776 vtotal = par->vtotal>>1;
2778 DPRINTK("only broadcast modes possible for ocs\n");
2783 * Checking the DMA timing
2786 fconst = 16<<maxfmode<<clk_shift;
2789 * smallest window start value without turn off other dma cycles
2790 * than sprite1-7, unless you change min_fstrt
2794 fsize = ((maxfmode+clk_shift <= 1) ? fconst : 64);
2795 fstrt = downx(fconst, par->diwstrt_h-4) - fsize;
2796 if (fstrt < min_fstrt) {
2797 DPRINTK("fetch start too low\n");
2802 * smallest window start value where smooth scrolling is possible
2805 fstrt = downx(fconst, par->diwstrt_h-fconst+(1<<clk_shift)-4) - fsize;
2806 if (fstrt < min_fstrt)
2807 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2809 maxfetchstop = down16(par->htotal - 80);
2811 fstrt = downx(fconst, par->diwstrt_h-4) - 64 - fconst;
2812 fsize = upx(fconst, xres_n + modx(fconst, downx(1<<clk_shift, par->diwstrt_h-4)));
2813 if (fstrt + fsize > maxfetchstop)
2814 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2816 fsize = upx(fconst, xres_n);
2817 if (fstrt + fsize > maxfetchstop) {
2818 DPRINTK("fetch stop too high\n");
2822 if (maxfmode + clk_shift <= 1) {
2823 fsize = up64(xres_n + fconst - 1);
2824 if (min_fstrt + fsize - 64 > maxfetchstop)
2825 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2827 fsize = up64(xres_n);
2828 if (min_fstrt + fsize - 64 > maxfetchstop) {
2829 DPRINTK("fetch size too high\n");
2838 * Check if there is enough time to update the bitplane pointers for ywrap
2841 if (par->htotal-fsize-64 < par->bpp*64)
2842 par->vmode &= ~FB_VMODE_YWRAP;
2845 * Bitplane calculations and check the Memory Requirements
2849 par->next_plane = div8(upx(16<<maxfmode, par->vxres));
2850 par->next_line = par->bpp*par->next_plane;
2851 if (par->next_line * par->vyres > fb_info.fix.smem_len) {
2852 DPRINTK("too few video mem\n");
2856 par->next_line = div8(upx(16<<maxfmode, par->vxres));
2857 par->next_plane = par->vyres*par->next_line;
2858 if (par->next_plane * par->bpp > fb_info.fix.smem_len) {
2859 DPRINTK("too few video mem\n");
2865 * Hardware Register Values
2868 par->bplcon0 = BPC0_COLOR | bplpixmode[clk_shift];
2870 par->bplcon0 |= BPC0_ECSENA;
2872 par->bplcon0 |= BPC0_BPU3;
2874 par->bplcon0 |= par->bpp<<12;
2875 if (var->nonstd == FB_NONSTD_HAM)
2876 par->bplcon0 |= BPC0_HAM;
2877 if (var->sync & FB_SYNC_EXT)
2878 par->bplcon0 |= BPC0_ERSY;
2881 par->fmode = bplfetchmode[maxfmode];
2883 switch (par->vmode & FB_VMODE_MASK) {
2884 case FB_VMODE_INTERLACED:
2885 par->bplcon0 |= BPC0_LACE;
2887 case FB_VMODE_DOUBLE:
2889 par->fmode |= FMODE_SSCAN2 | FMODE_BSCAN2;
2893 if (!((par->vmode ^ var->vmode) & FB_VMODE_YWRAP)) {
2894 par->xoffset = var->xoffset;
2895 par->yoffset = var->yoffset;
2896 if (par->vmode & FB_VMODE_YWRAP) {
2897 if (par->xoffset || par->yoffset < 0 || par->yoffset >= par->vyres)
2898 par->xoffset = par->yoffset = 0;
2900 if (par->xoffset < 0 || par->xoffset > upx(16<<maxfmode, par->vxres-par->xres) ||
2901 par->yoffset < 0 || par->yoffset > par->vyres-par->yres)
2902 par->xoffset = par->yoffset = 0;
2905 par->xoffset = par->yoffset = 0;
2907 par->crsr.crsr_x = par->crsr.crsr_y = 0;
2908 par->crsr.spot_x = par->crsr.spot_y = 0;
2909 par->crsr.height = par->crsr.width = 0;
2911 #if 0 /* fbmon not done. uncomment for 2.5.x -brad */
2912 if (!fbmon_valid_timings(pixclock[clk_shift], htotal, vtotal,
2914 DPRINTK("mode doesn't fit for monitor\n");
2923 * Fill the `var' structure based on the values in `par' and maybe
2924 * other values read out of the hardware.
2927 static int ami_encode_var(struct fb_var_screeninfo *var,
2928 struct amifb_par *par)
2930 u_short clk_shift, line_shift;
2932 memset(var, 0, sizeof(struct fb_var_screeninfo));
2934 clk_shift = par->clk_shift;
2935 line_shift = par->line_shift;
2937 var->xres = par->xres;
2938 var->yres = par->yres;
2939 var->xres_virtual = par->vxres;
2940 var->yres_virtual = par->vyres;
2941 var->xoffset = par->xoffset;
2942 var->yoffset = par->yoffset;
2944 var->bits_per_pixel = par->bpp;
2947 var->red.offset = 0;
2948 var->red.msb_right = 0;
2949 var->red.length = par->bpp;
2950 if (par->bplcon0 & BPC0_HAM)
2951 var->red.length -= 2;
2952 var->blue = var->green = var->red;
2953 var->transp.offset = 0;
2954 var->transp.length = 0;
2955 var->transp.msb_right = 0;
2957 if (par->bplcon0 & BPC0_HAM)
2958 var->nonstd = FB_NONSTD_HAM;
2966 var->pixclock = pixclock[clk_shift];
2968 if (IS_AGA && par->fmode & FMODE_BSCAN2)
2969 var->vmode = FB_VMODE_DOUBLE;
2970 else if (par->bplcon0 & BPC0_LACE)
2971 var->vmode = FB_VMODE_INTERLACED;
2973 var->vmode = FB_VMODE_NONINTERLACED;
2975 if (!IS_OCS && par->beamcon0 & BMC0_VARBEAMEN) {
2976 var->hsync_len = (par->hsstop-par->hsstrt)>>clk_shift;
2977 var->right_margin = par->hsstrt>>clk_shift;
2978 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2979 var->vsync_len = (par->vsstop-par->vsstrt)>>line_shift;
2980 var->lower_margin = par->vsstrt>>line_shift;
2981 var->upper_margin = (par->vtotal>>line_shift) - var->yres - var->lower_margin - var->vsync_len;
2983 if (par->beamcon0 & BMC0_HSYTRUE)
2984 var->sync |= FB_SYNC_HOR_HIGH_ACT;
2985 if (par->beamcon0 & BMC0_VSYTRUE)
2986 var->sync |= FB_SYNC_VERT_HIGH_ACT;
2987 if (par->beamcon0 & BMC0_CSYTRUE)
2988 var->sync |= FB_SYNC_COMP_HIGH_ACT;
2990 var->sync = FB_SYNC_BROADCAST;
2991 var->hsync_len = (152>>clk_shift) + mod4(par->diwstop_h);
2992 var->right_margin = ((par->htotal - down4(par->diwstop_h))>>clk_shift) + var->hsync_len;
2993 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2994 var->vsync_len = 4>>line_shift;
2995 var->lower_margin = ((par->vtotal - par->diwstop_v)>>line_shift) + var->vsync_len;
2996 var->upper_margin = (((par->vtotal - 2)>>line_shift) + 1) - var->yres -
2997 var->lower_margin - var->vsync_len;
3000 if (par->bplcon0 & BPC0_ERSY)
3001 var->sync |= FB_SYNC_EXT;
3002 if (par->vmode & FB_VMODE_YWRAP)
3003 var->vmode |= FB_VMODE_YWRAP;
3010 * Pan or Wrap the Display
3012 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
3016 static void ami_pan_var(struct fb_var_screeninfo *var)
3018 struct amifb_par *par = ¤tpar;
3020 par->xoffset = var->xoffset;
3021 par->yoffset = var->yoffset;
3022 if (var->vmode & FB_VMODE_YWRAP)
3023 par->vmode |= FB_VMODE_YWRAP;
3025 par->vmode &= ~FB_VMODE_YWRAP;
3036 static int ami_update_par(void)
3038 struct amifb_par *par = ¤tpar;
3039 short clk_shift, vshift, fstrt, fsize, fstop, fconst, shift, move, mod;
3041 clk_shift = par->clk_shift;
3043 if (!(par->vmode & FB_VMODE_SMOOTH_XPAN))
3044 par->xoffset = upx(16<<maxfmode, par->xoffset);
3046 fconst = 16<<maxfmode<<clk_shift;
3047 vshift = modx(16<<maxfmode, par->xoffset);
3048 fstrt = par->diwstrt_h - (vshift<<clk_shift) - 4;
3049 fsize = (par->xres+vshift)<<clk_shift;
3050 shift = modx(fconst, fstrt);
3051 move = downx(2<<maxfmode, div8(par->xoffset));
3052 if (maxfmode + clk_shift > 1) {
3053 fstrt = downx(fconst, fstrt) - 64;
3054 fsize = upx(fconst, fsize);
3055 fstop = fstrt + fsize - fconst;
3057 mod = fstrt = downx(fconst, fstrt) - fconst;
3058 fstop = fstrt + upx(fconst, fsize) - 64;
3059 fsize = up64(fsize);
3060 fstrt = fstop - fsize + 64;
3061 if (fstrt < min_fstrt) {
3062 fstop += min_fstrt - fstrt;
3065 move = move - div8((mod-fstrt)>>clk_shift);
3067 mod = par->next_line - div8(fsize>>clk_shift);
3068 par->ddfstrt = fstrt;
3069 par->ddfstop = fstop;
3070 par->bplcon1 = hscroll2hw(shift);
3072 if (par->bplcon0 & BPC0_LACE)
3073 par->bpl2mod += par->next_line;
3074 if (IS_AGA && (par->fmode & FMODE_BSCAN2))
3075 par->bpl1mod = -div8(fsize>>clk_shift);
3077 par->bpl1mod = par->bpl2mod;
3080 par->bplpt0 = fb_info.fix.smem_start + par->next_line*par->yoffset + move;
3081 if (par->vmode & FB_VMODE_YWRAP) {
3082 if (par->yoffset > par->vyres-par->yres) {
3083 par->bplpt0wrap = fb_info.fix.smem_start + move;
3084 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v+par->vyres-par->yoffset))
3085 par->bplpt0wrap += par->next_line;
3089 par->bplpt0 = fb_info.fix.smem_start + move;
3091 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v))
3092 par->bplpt0 += par->next_line;
3099 * Set a single color register. The values supplied are already
3100 * rounded down to the hardware's capabilities (according to the
3101 * entries in the var structure). Return != 0 for invalid regno.
3104 static int amifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
3105 u_int transp, struct fb_info *info)
3110 } else if (currentpar.bplcon0 & BPC0_SHRES) {
3127 * Update the corresponding Hardware Color Register, unless it's Color
3128 * Register 0 and the screen is blanked.
3130 * VBlank is switched off to protect bplcon3 or ecs_palette[] from
3131 * being changed by ami_do_blank() during the VBlank.
3134 if (regno || !is_blanked) {
3135 #if defined(CONFIG_FB_AMIGA_AGA)
3137 u_short bplcon3 = currentpar.bplcon3;
3139 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000);
3140 custom.color[regno&31] = rgb2hw8_high(red, green, blue);
3141 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000) | BPC3_LOCT;
3142 custom.color[regno&31] = rgb2hw8_low(red, green, blue);
3143 custom.bplcon3 = bplcon3;
3147 #if defined(CONFIG_FB_AMIGA_ECS)
3148 if (currentpar.bplcon0 & BPC0_SHRES) {
3149 u_short color, mask;
3153 color = rgb2hw2(red, green, blue);
3155 for (i = regno+12; i >= (int)regno; i -= 4)
3156 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3157 mask <<=2; color >>= 2;
3158 regno = down16(regno)+mul4(mod4(regno));
3159 for (i = regno+3; i >= (int)regno; i--)
3160 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3164 custom.color[regno] = rgb2hw4(red, green, blue);
3169 static void ami_update_display(void)
3171 struct amifb_par *par = ¤tpar;
3173 custom.bplcon1 = par->bplcon1;
3174 custom.bpl1mod = par->bpl1mod;
3175 custom.bpl2mod = par->bpl2mod;
3176 custom.ddfstrt = ddfstrt2hw(par->ddfstrt);
3177 custom.ddfstop = ddfstop2hw(par->ddfstop);
3181 * Change the video mode (called by VBlank interrupt)
3184 static void ami_init_display(void)
3186 struct amifb_par *par = ¤tpar;
3189 custom.bplcon0 = par->bplcon0 & ~BPC0_LACE;
3190 custom.bplcon2 = (IS_OCS ? 0 : BPC2_KILLEHB) | BPC2_PF2P2 | BPC2_PF1P2;
3192 custom.bplcon3 = par->bplcon3;
3194 custom.bplcon4 = BPC4_ESPRM4 | BPC4_OSPRM4;
3195 if (par->beamcon0 & BMC0_VARBEAMEN) {
3196 custom.htotal = htotal2hw(par->htotal);
3197 custom.hbstrt = hbstrt2hw(par->hbstrt);
3198 custom.hbstop = hbstop2hw(par->hbstop);
3199 custom.hsstrt = hsstrt2hw(par->hsstrt);
3200 custom.hsstop = hsstop2hw(par->hsstop);
3201 custom.hcenter = hcenter2hw(par->hcenter);
3202 custom.vtotal = vtotal2hw(par->vtotal);
3203 custom.vbstrt = vbstrt2hw(par->vbstrt);
3204 custom.vbstop = vbstop2hw(par->vbstop);
3205 custom.vsstrt = vsstrt2hw(par->vsstrt);
3206 custom.vsstop = vsstop2hw(par->vsstop);
3209 if (!IS_OCS || par->hsstop)
3210 custom.beamcon0 = par->beamcon0;
3212 custom.fmode = par->fmode;
3215 * The minimum period for audio depends on htotal
3218 amiga_audio_min_period = div16(par->htotal);
3220 is_lace = par->bplcon0 & BPC0_LACE ? 1 : 0;
3223 i = custom.vposr >> 15;
3225 custom.vposw = custom.vposr | 0x8000;
3230 custom.vposw = custom.vposr | 0x8000;
3232 custom.cop2lc = (u_short *)ZTWO_PADDR(copdisplay.list[currentcop][i]);
3236 * (Un)Blank the screen (called by VBlank interrupt)
3239 static void ami_do_blank(void)
3241 struct amifb_par *par = ¤tpar;
3242 #if defined(CONFIG_FB_AMIGA_AGA)
3243 u_short bplcon3 = par->bplcon3;
3245 u_char red, green, blue;
3248 custom.dmacon = DMAF_RASTER | DMAF_SPRITE;
3249 red = green = blue = 0;
3250 if (!IS_OCS && do_blank > 1) {
3252 case FB_BLANK_VSYNC_SUSPEND:
3253 custom.hsstrt = hsstrt2hw(par->hsstrt);
3254 custom.hsstop = hsstop2hw(par->hsstop);
3255 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3256 custom.vsstop = vsstop2hw(par->vtotal+4);
3258 case FB_BLANK_HSYNC_SUSPEND:
3259 custom.hsstrt = hsstrt2hw(par->htotal+16);
3260 custom.hsstop = hsstop2hw(par->htotal+16);
3261 custom.vsstrt = vsstrt2hw(par->vsstrt);
3262 custom.vsstop = vsstrt2hw(par->vsstop);
3264 case FB_BLANK_POWERDOWN:
3265 custom.hsstrt = hsstrt2hw(par->htotal+16);
3266 custom.hsstop = hsstop2hw(par->htotal+16);
3267 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3268 custom.vsstop = vsstop2hw(par->vtotal+4);
3271 if (!(par->beamcon0 & BMC0_VARBEAMEN)) {
3272 custom.htotal = htotal2hw(par->htotal);
3273 custom.vtotal = vtotal2hw(par->vtotal);
3274 custom.beamcon0 = BMC0_HARDDIS | BMC0_VARBEAMEN |
3275 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARCSYEN;
3279 custom.dmacon = DMAF_SETCLR | DMAF_RASTER | DMAF_SPRITE;
3284 custom.hsstrt = hsstrt2hw(par->hsstrt);
3285 custom.hsstop = hsstop2hw(par->hsstop);
3286 custom.vsstrt = vsstrt2hw(par->vsstrt);
3287 custom.vsstop = vsstop2hw(par->vsstop);
3288 custom.beamcon0 = par->beamcon0;
3291 #if defined(CONFIG_FB_AMIGA_AGA)
3293 custom.bplcon3 = bplcon3;
3294 custom.color[0] = rgb2hw8_high(red, green, blue);
3295 custom.bplcon3 = bplcon3 | BPC3_LOCT;
3296 custom.color[0] = rgb2hw8_low(red, green, blue);
3297 custom.bplcon3 = bplcon3;
3300 #if defined(CONFIG_FB_AMIGA_ECS)
3301 if (par->bplcon0 & BPC0_SHRES) {
3302 u_short color, mask;
3306 color = rgb2hw2(red, green, blue);
3307 for (i = 12; i >= 0; i -= 4)
3308 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3309 mask <<=2; color >>= 2;
3310 for (i = 3; i >= 0; i--)
3311 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3314 custom.color[0] = rgb2hw4(red, green, blue);
3315 is_blanked = do_blank > 0 ? do_blank : 0;
3318 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix)
3320 struct amifb_par *par = ¤tpar;
3322 fix->crsr_width = fix->crsr_xsize = par->crsr.width;
3323 fix->crsr_height = fix->crsr_ysize = par->crsr.height;
3324 fix->crsr_color1 = 17;
3325 fix->crsr_color2 = 18;
3329 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char *data)
3331 struct amifb_par *par = ¤tpar;
3332 register u_short *lspr, *sspr;
3334 register u_long datawords asm ("d2");
3336 register u_long datawords;
3338 register short delta;
3339 register u_char color;
3340 short height, width, bits, words;
3343 size = par->crsr.height*par->crsr.width;
3344 alloc = var->height*var->width;
3345 var->height = par->crsr.height;
3346 var->width = par->crsr.width;
3347 var->xspot = par->crsr.spot_x;
3348 var->yspot = par->crsr.spot_y;
3349 if (size > var->height*var->width)
3350 return -ENAMETOOLONG;
3351 if (!access_ok(VERIFY_WRITE, (void *)data, size))
3353 delta = 1<<par->crsr.fmode;
3354 lspr = lofsprite + (delta<<1);
3355 if (par->bplcon0 & BPC0_LACE)
3356 sspr = shfsprite + (delta<<1);
3359 for (height = (short)var->height-1; height >= 0; height--) {
3360 bits = 0; words = delta; datawords = 0;
3361 for (width = (short)var->width-1; width >= 0; width--) {
3365 asm volatile ("movew %1@(%3:w:2),%0 ; swap %0 ; movew %1@+,%0"
3366 : "=d" (datawords), "=a" (lspr) : "1" (lspr), "d" (delta));
3368 datawords = (*(lspr+delta) << 16) | (*lspr++);
3374 "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; "
3375 "swap %1 ; lslw #1,%1 ; roxlb #1,%0"
3376 : "=d" (color), "=d" (datawords) : "1" (datawords));
3378 color = (((datawords >> 30) & 2)
3379 | ((datawords >> 15) & 1));
3382 put_user(color, data++);
3387 while (--words >= 0)
3390 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3391 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3395 u_short *tmp = lspr;
3404 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char *data)
3406 struct amifb_par *par = ¤tpar;
3407 register u_short *lspr, *sspr;
3409 register u_long datawords asm ("d2");
3411 register u_long datawords;
3413 register short delta;
3415 short height, width, bits, words;
3419 else if (var->width <= 16)
3420 fmode = TAG_FMODE_1;
3421 else if (var->width <= 32)
3422 fmode = TAG_FMODE_2;
3423 else if (var->width <= 64)
3424 fmode = TAG_FMODE_4;
3427 if (fmode > maxfmode)
3431 if (!access_ok(VERIFY_READ, (void *)data, var->width*var->height))
3434 lofsprite = shfsprite = (u_short *)spritememory;
3435 lspr = lofsprite + (delta<<1);
3436 if (par->bplcon0 & BPC0_LACE) {
3437 if (((var->height+4)<<fmode<<2) > SPRITEMEMSIZE)
3439 memset(lspr, 0, (var->height+4)<<fmode<<2);
3440 shfsprite += ((var->height+5)&-2)<<fmode;
3441 sspr = shfsprite + (delta<<1);
3443 if (((var->height+2)<<fmode<<2) > SPRITEMEMSIZE)
3445 memset(lspr, 0, (var->height+2)<<fmode<<2);
3448 for (height = (short)var->height-1; height >= 0; height--) {
3449 bits = 16; words = delta; datawords = 0;
3450 for (width = (short)var->width-1; width >= 0; width--) {
3451 unsigned long tdata = 0;
3452 get_user(tdata, (char *)data);
3456 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0 ; "
3457 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0"
3459 : "0" (datawords), "d" (tdata));
3461 datawords = ((datawords << 1) & 0xfffefffe);
3462 datawords |= tdata & 1;
3463 datawords |= (tdata & 2) << (16-1);
3468 asm volatile ("swap %2 ; movew %2,%0@(%3:w:2) ; swap %2 ; movew %2,%0@+"
3469 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta));
3471 *(lspr+delta) = (u_short) (datawords >> 16);
3472 *lspr++ = (u_short) (datawords & 0xffff);
3480 "swap %2 ; lslw %4,%2 ; movew %2,%0@(%3:w:2) ; "
3481 "swap %2 ; lslw %4,%2 ; movew %2,%0@+"
3482 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta), "d" (bits));
3484 *(lspr+delta) = (u_short) (datawords >> (16+bits));
3485 *lspr++ = (u_short) ((datawords & 0x0000ffff) >> bits);
3488 while (--words >= 0) {
3490 asm volatile ("moveql #0,%%d0 ; movew %%d0,%0@(%2:w:2) ; movew %%d0,%0@+"
3491 : "=a" (lspr) : "0" (lspr), "d" (delta) : "d0");
3498 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3499 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3503 u_short *tmp = lspr;
3509 par->crsr.height = var->height;
3510 par->crsr.width = var->width;
3511 par->crsr.spot_x = var->xspot;
3512 par->crsr.spot_y = var->yspot;
3513 par->crsr.fmode = fmode;
3515 par->fmode &= ~(FMODE_SPAGEM | FMODE_SPR32);
3516 par->fmode |= sprfetchmode[fmode];
3517 custom.fmode = par->fmode;
3522 static int ami_get_cursorstate(struct fb_cursorstate *state)
3524 struct amifb_par *par = ¤tpar;
3526 state->xoffset = par->crsr.crsr_x;
3527 state->yoffset = par->crsr.crsr_y;
3528 state->mode = cursormode;
3532 static int ami_set_cursorstate(struct fb_cursorstate *state)
3534 struct amifb_par *par = ¤tpar;
3536 par->crsr.crsr_x = state->xoffset;
3537 par->crsr.crsr_y = state->yoffset;
3538 if ((cursormode = state->mode) == FB_CURSOR_OFF)
3544 static void ami_set_sprite(void)
3546 struct amifb_par *par = ¤tpar;
3547 copins *copl, *cops;
3552 cops = copdisplay.list[currentcop][0];
3553 copl = copdisplay.list[currentcop][1];
3554 ps = pl = ZTWO_PADDR(dummysprite);
3555 mx = par->crsr.crsr_x-par->crsr.spot_x;
3556 my = par->crsr.crsr_y-par->crsr.spot_y;
3557 if (!(par->vmode & FB_VMODE_YWRAP)) {
3561 if (!is_blanked && cursorstate > 0 && par->crsr.height > 0 &&
3562 mx > -(short)par->crsr.width && mx < par->xres &&
3563 my > -(short)par->crsr.height && my < par->yres) {
3564 pl = ZTWO_PADDR(lofsprite);
3565 hs = par->diwstrt_h + (mx<<par->clk_shift) - 4;
3566 vs = par->diwstrt_v + (my<<par->line_shift);
3567 ve = vs + (par->crsr.height<<par->line_shift);
3568 if (par->bplcon0 & BPC0_LACE) {
3569 ps = ZTWO_PADDR(shfsprite);
3570 lofsprite[0] = spr2hw_pos(vs, hs);
3571 shfsprite[0] = spr2hw_pos(vs+1, hs);
3573 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3574 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve+1);
3575 pt = pl; pl = ps; ps = pt;
3577 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve+1);
3578 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve);
3581 lofsprite[0] = spr2hw_pos(vs, hs) | (IS_AGA && (par->fmode & FMODE_BSCAN2) ? 0x80 : 0);
3582 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3585 copl[cop_spr0ptrh].w[1] = highw(pl);
3586 copl[cop_spr0ptrl].w[1] = loww(pl);
3587 if (par->bplcon0 & BPC0_LACE) {
3588 cops[cop_spr0ptrh].w[1] = highw(ps);
3589 cops[cop_spr0ptrl].w[1] = loww(ps);
3595 * Initialise the Copper Initialisation List
3598 static void __init ami_init_copper(void)
3600 copins *cop = copdisplay.init;
3605 (cop++)->l = CMOVE(BPC0_COLOR | BPC0_SHRES | BPC0_ECSENA, bplcon0);
3606 (cop++)->l = CMOVE(0x0181, diwstrt);
3607 (cop++)->l = CMOVE(0x0281, diwstop);
3608 (cop++)->l = CMOVE(0x0000, diwhigh);
3610 (cop++)->l = CMOVE(BPC0_COLOR, bplcon0);
3611 p = ZTWO_PADDR(dummysprite);
3612 for (i = 0; i < 8; i++) {
3613 (cop++)->l = CMOVE(0, spr[i].pos);
3614 (cop++)->l = CMOVE(highw(p), sprpt[i]);
3615 (cop++)->l = CMOVE2(loww(p), sprpt[i]);
3618 (cop++)->l = CMOVE(IF_SETCLR | IF_COPER, intreq);
3619 copdisplay.wait = cop;
3621 (cop++)->l = CMOVE(0, copjmp2);
3624 custom.cop1lc = (u_short *)ZTWO_PADDR(copdisplay.init);
3628 static void ami_reinit_copper(void)
3630 struct amifb_par *par = ¤tpar;
3632 copdisplay.init[cip_bplcon0].w[1] = ~(BPC0_BPU3 | BPC0_BPU2 | BPC0_BPU1 | BPC0_BPU0) & par->bplcon0;
3633 copdisplay.wait->l = CWAIT(32, par->diwstrt_v-4);
3637 * Build the Copper List
3640 static void ami_build_copper(void)
3642 struct amifb_par *par = ¤tpar;
3643 copins *copl, *cops;
3646 currentcop = 1 - currentcop;
3648 copl = copdisplay.list[currentcop][1];
3650 (copl++)->l = CWAIT(0, 10);
3651 (copl++)->l = CMOVE(par->bplcon0, bplcon0);
3652 (copl++)->l = CMOVE(0, sprpt[0]);
3653 (copl++)->l = CMOVE2(0, sprpt[0]);
3655 if (par->bplcon0 & BPC0_LACE) {
3656 cops = copdisplay.list[currentcop][0];
3658 (cops++)->l = CWAIT(0, 10);
3659 (cops++)->l = CMOVE(par->bplcon0, bplcon0);
3660 (cops++)->l = CMOVE(0, sprpt[0]);
3661 (cops++)->l = CMOVE2(0, sprpt[0]);
3663 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v+1), diwstrt);
3664 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v+1), diwstop);
3665 (cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3666 (cops++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3668 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v+1,
3669 par->diwstop_h, par->diwstop_v+1), diwhigh);
3670 (cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3671 par->diwstop_h, par->diwstop_v), diwhigh);
3673 if (par->beamcon0 & BMC0_VARBEAMEN) {
3674 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3675 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt+1), vbstrt);
3676 (copl++)->l = CMOVE(vbstop2hw(par->vbstop+1), vbstop);
3677 (cops++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3678 (cops++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3679 (cops++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3683 p = ZTWO_PADDR(copdisplay.list[currentcop][0]);
3684 (copl++)->l = CMOVE(highw(p), cop2lc);
3685 (copl++)->l = CMOVE2(loww(p), cop2lc);
3686 p = ZTWO_PADDR(copdisplay.list[currentcop][1]);
3687 (cops++)->l = CMOVE(highw(p), cop2lc);
3688 (cops++)->l = CMOVE2(loww(p), cop2lc);
3689 copdisplay.rebuild[0] = cops;
3691 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3692 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3694 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3695 par->diwstop_h, par->diwstop_v), diwhigh);
3697 if (par->beamcon0 & BMC0_VARBEAMEN) {
3698 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3699 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3700 (copl++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3705 copdisplay.rebuild[1] = copl;
3708 ami_rebuild_copper();
3712 * Rebuild the Copper List
3714 * We only change the things that are not static
3717 static void ami_rebuild_copper(void)
3719 struct amifb_par *par = ¤tpar;
3720 copins *copl, *cops;
3721 u_short line, h_end1, h_end2;
3725 if (IS_AGA && maxfmode + par->clk_shift == 0)
3726 h_end1 = par->diwstrt_h-64;
3728 h_end1 = par->htotal-32;
3729 h_end2 = par->ddfstop+64;
3733 copl = copdisplay.rebuild[1];
3735 if (par->vmode & FB_VMODE_YWRAP) {
3736 if ((par->vyres-par->yoffset) != 1 || !mod2(par->diwstrt_v)) {
3737 if (par->yoffset > par->vyres-par->yres) {
3738 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3739 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3740 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3742 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 1;
3743 while (line >= 512) {
3744 (copl++)->l = CWAIT(h_end1, 510);
3747 if (line >= 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3748 (copl++)->l = CWAIT(h_end1, line);
3750 (copl++)->l = CWAIT(h_end2, line);
3751 p = par->bplpt0wrap;
3753 } else p = par->bplpt0wrap;
3755 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3756 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3757 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3761 if (par->bplcon0 & BPC0_LACE) {
3762 cops = copdisplay.rebuild[0];
3764 if (mod2(par->diwstrt_v))
3765 p -= par->next_line;
3767 p += par->next_line;
3768 if (par->vmode & FB_VMODE_YWRAP) {
3769 if ((par->vyres-par->yoffset) != 1 || mod2(par->diwstrt_v)) {
3770 if (par->yoffset > par->vyres-par->yres+1) {
3771 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3772 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3773 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3775 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 2;
3776 while (line >= 512) {
3777 (cops++)->l = CWAIT(h_end1, 510);
3780 if (line > 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3781 (cops++)->l = CWAIT(h_end1, line);
3783 (cops++)->l = CWAIT(h_end2, line);
3784 p = par->bplpt0wrap;
3785 if (mod2(par->diwstrt_v+par->vyres-par->yoffset))
3786 p -= par->next_line;
3788 p += par->next_line;
3790 } else p = par->bplpt0wrap - par->next_line;
3792 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3793 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3794 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3801 module_init(amifb_init);
3804 MODULE_LICENSE("GPL");
3806 void cleanup_module(void)
3808 unregister_framebuffer(&fb_info);