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/slab.h>
49 #include <linux/delay.h>
50 #include <linux/interrupt.h>
52 #include <linux/init.h>
53 #include <linux/ioport.h>
55 #include <linux/uaccess.h>
56 #include <asm/system.h>
58 #include <asm/amigahw.h>
59 #include <asm/amigaints.h>
60 #include <asm/setup.h>
67 #if !defined(CONFIG_FB_AMIGA_OCS) && !defined(CONFIG_FB_AMIGA_ECS) && !defined(CONFIG_FB_AMIGA_AGA)
68 #define CONFIG_FB_AMIGA_OCS /* define at least one fb driver, this will change later */
71 #if !defined(CONFIG_FB_AMIGA_OCS)
73 #elif defined(CONFIG_FB_AMIGA_ECS) || defined(CONFIG_FB_AMIGA_AGA)
74 # define IS_OCS (chipset == TAG_OCS)
76 # define CONFIG_FB_AMIGA_OCS_ONLY
80 #if !defined(CONFIG_FB_AMIGA_ECS)
82 #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_AGA)
83 # define IS_ECS (chipset == TAG_ECS)
85 # define CONFIG_FB_AMIGA_ECS_ONLY
89 #if !defined(CONFIG_FB_AMIGA_AGA)
91 #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_ECS)
92 # define IS_AGA (chipset == TAG_AGA)
94 # define CONFIG_FB_AMIGA_AGA_ONLY
99 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
101 # define DPRINTK(fmt, args...)
104 /*******************************************************************************
107 Generic video timings
108 ---------------------
110 Timings used by the frame buffer interface:
112 +----------+---------------------------------------------+----------+-------+
114 | | |upper_margin | | |
116 +----------###############################################----------+-------+
121 | left # | # right | hsync |
122 | margin # | xres # margin | len |
123 |<-------->#<---------------+--------------------------->#<-------->|<----->|
137 +----------###############################################----------+-------+
139 | | |lower_margin | | |
141 +----------+---------------------------------------------+----------+-------+
145 +----------+---------------------------------------------+----------+-------+
151 The Amiga native chipsets uses another timing scheme:
153 - hsstrt: Start of horizontal synchronization pulse
154 - hsstop: End of horizontal synchronization pulse
155 - htotal: Last value on the line (i.e. line length = htotal+1)
156 - vsstrt: Start of vertical synchronization pulse
157 - vsstop: End of vertical synchronization pulse
158 - vtotal: Last line value (i.e. number of lines = vtotal+1)
159 - hcenter: Start of vertical retrace for interlace
161 You can specify the blanking timings independently. Currently I just set
162 them equal to the respective synchronization values:
164 - hbstrt: Start of horizontal blank
165 - hbstop: End of horizontal blank
166 - vbstrt: Start of vertical blank
167 - vbstop: End of vertical blank
169 Horizontal values are in color clock cycles (280 ns), vertical values are in
172 (0, 0) is somewhere in the upper-left corner :-)
175 Amiga visible window definitions
176 --------------------------------
178 Currently I only have values for AGA, SHRES (28 MHz dotclock). Feel free to
179 make corrections and/or additions.
181 Within the above synchronization specifications, the visible window is
182 defined by the following parameters (actual register resolutions may be
183 different; all horizontal values are normalized with respect to the pixel
186 - diwstrt_h: Horizontal start of the visible window
187 - diwstop_h: Horizontal stop+1(*) of the visible window
188 - diwstrt_v: Vertical start of the visible window
189 - diwstop_v: Vertical stop of the visible window
190 - ddfstrt: Horizontal start of display DMA
191 - ddfstop: Horizontal stop of display DMA
192 - hscroll: Horizontal display output delay
196 - sprstrt_h: Horizontal start-4 of sprite
197 - sprstrt_v: Vertical start of sprite
199 (*) Even Commodore did it wrong in the AGA monitor drivers by not adding 1.
201 Horizontal values are in dotclock cycles (35 ns), vertical values are in
204 (0, 0) is somewhere in the upper-left corner :-)
207 Dependencies (AGA, SHRES (35 ns dotclock))
208 -------------------------------------------
210 Since there are much more parameters for the Amiga display than for the
211 frame buffer interface, there must be some dependencies among the Amiga
212 display parameters. Here's what I found out:
214 - ddfstrt and ddfstop are best aligned to 64 pixels.
215 - the chipset needs 64+4 horizontal pixels after the DMA start before the
216 first pixel is output, so diwstrt_h = ddfstrt+64+4 if you want to
217 display the first pixel on the line too. Increase diwstrt_h for virtual
219 - the display DMA always fetches 64 pixels at a time (fmode = 3).
220 - ddfstop is ddfstrt+#pixels-64.
221 - diwstop_h = diwstrt_h+xres+1. Because of the additional 1 this can be 1
223 - hscroll simply adds a delay to the display output. Smooth horizontal
224 panning needs an extra 64 pixels on the left to prefetch the pixels that
225 `fall off' on the left.
226 - if ddfstrt < 192, the sprite DMA cycles are all stolen by the bitplane
227 DMA, so it's best to make the DMA start as late as possible.
228 - you really don't want to make ddfstrt < 128, since this will steal DMA
229 cycles from the other DMA channels (audio, floppy and Chip RAM refresh).
230 - I make diwstop_h and diwstop_v as large as possible.
235 - all values are SHRES pixel (35ns)
237 table 1:fetchstart table 2:prefetch table 3:fetchsize
238 ------------------ ---------------- -----------------
239 Pixclock # SHRES|HIRES|LORES # SHRES|HIRES|LORES # SHRES|HIRES|LORES
240 -------------#------+-----+------#------+-----+------#------+-----+------
241 Bus width 1x # 16 | 32 | 64 # 16 | 32 | 64 # 64 | 64 | 64
242 Bus width 2x # 32 | 64 | 128 # 32 | 64 | 64 # 64 | 64 | 128
243 Bus width 4x # 64 | 128 | 256 # 64 | 64 | 64 # 64 | 128 | 256
245 - chipset needs 4 pixels before the first pixel is output
246 - ddfstrt must be aligned to fetchstart (table 1)
247 - chipset needs also prefetch (table 2) to get first pixel data, so
248 ddfstrt = ((diwstrt_h-4) & -fetchstart) - prefetch
249 - for horizontal panning decrease diwstrt_h
250 - the length of a fetchline must be aligned to fetchsize (table 3)
251 - if fetchstart is smaller than fetchsize, then ddfstrt can a little bit
252 moved to optimize use of dma (useful for OCS/ECS overscan displays)
253 - ddfstop is ddfstrt+ddfsize-fetchsize
254 - If C= didn't change anything for AGA, then at following positions the
255 dma bus is already used:
256 ddfstrt < 48 -> memory refresh
259 < 192 -> sprite 0 dma
260 < 416 -> sprite dma (32 per sprite)
261 - in accordance with the hardware reference manual a hardware stop is at
262 192, but AGA (ECS?) can go below this.
267 Since there are limits on the earliest start value for display DMA and the
268 display of sprites, I use the following policy on horizontal panning and
271 - if you want to start display DMA too early, you lose the ability to
272 do smooth horizontal panning (xpanstep 1 -> 64).
273 - if you want to go even further, you lose the hardware cursor too.
275 IMHO a hardware cursor is more important for X than horizontal scrolling,
276 so that's my motivation.
282 ami_decode_var() converts the frame buffer values to the Amiga values. It's
283 just a `straightforward' implementation of the above rules.
289 xres yres left right upper lower hsync vsync
290 ---- ---- ---- ----- ----- ----- ----- -----
291 80x25 720 400 27 45 35 12 108 2
292 80x30 720 480 27 45 30 9 108 2
294 These were taken from a XFree86 configuration file, recalculated for a 28 MHz
295 dotclock (Amigas don't have a 25 MHz dotclock) and converted to frame buffer
298 As a comparison, graphics/monitor.h suggests the following:
300 xres yres left right upper lower hsync vsync
301 ---- ---- ---- ----- ----- ----- ----- -----
303 VGA 640 480 52 112 24 19 112 - 2 +
304 VGA70 640 400 52 112 27 21 112 - 2 -
310 VSYNC HSYNC Vertical size Vertical total
311 ----- ----- ------------- --------------
312 + + Reserved Reserved
317 Source: CL-GD542X Technical Reference Manual, Cirrus Logic, Oct 1992
320 Broadcast video timings
321 -----------------------
323 According to the CCIR and RETMA specifications, we have the following values:
328 - a scanline is 64 µs long, of which 52.48 µs are visible. This is about
329 736 visible 70 ns pixels per line.
330 - we have 625 scanlines, of which 575 are visible (interlaced); after
331 rounding this becomes 576.
336 - a scanline is 63.5 µs long, of which 53.5 µs are visible. This is about
337 736 visible 70 ns pixels per line.
338 - we have 525 scanlines, of which 485 are visible (interlaced); after
339 rounding this becomes 484.
341 Thus if you want a PAL compatible display, you have to do the following:
343 - set the FB_SYNC_BROADCAST flag to indicate that standard broadcast
344 timings are to be used.
345 - make sure upper_margin+yres+lower_margin+vsync_len = 625 for an
346 interlaced, 312 for a non-interlaced and 156 for a doublescanned
348 - make sure left_margin+xres+right_margin+hsync_len = 1816 for a SHRES,
349 908 for a HIRES and 454 for a LORES display.
350 - the left visible part begins at 360 (SHRES; HIRES:180, LORES:90),
351 left_margin+2*hsync_len must be greater or equal.
352 - the upper visible part begins at 48 (interlaced; non-interlaced:24,
353 doublescanned:12), upper_margin+2*vsync_len must be greater or equal.
354 - ami_encode_var() calculates margins with a hsync of 5320 ns and a vsync
357 The settings for a NTSC compatible display are straightforward.
359 Note that in a strict sense the PAL and NTSC standards only define the
360 encoding of the color part (chrominance) of the video signal and don't say
361 anything about horizontal/vertical synchronization nor refresh rates.
366 *******************************************************************************/
370 * Custom Chipset Definitions
373 #define CUSTOM_OFS(fld) ((long)&((struct CUSTOM*)0)->fld)
376 * BPLCON0 -- Bitplane Control Register 0
379 #define BPC0_HIRES (0x8000)
380 #define BPC0_BPU2 (0x4000) /* Bit plane used count */
381 #define BPC0_BPU1 (0x2000)
382 #define BPC0_BPU0 (0x1000)
383 #define BPC0_HAM (0x0800) /* HAM mode */
384 #define BPC0_DPF (0x0400) /* Double playfield */
385 #define BPC0_COLOR (0x0200) /* Enable colorburst */
386 #define BPC0_GAUD (0x0100) /* Genlock audio enable */
387 #define BPC0_UHRES (0x0080) /* Ultrahi res enable */
388 #define BPC0_SHRES (0x0040) /* Super hi res mode */
389 #define BPC0_BYPASS (0x0020) /* Bypass LUT - AGA */
390 #define BPC0_BPU3 (0x0010) /* AGA */
391 #define BPC0_LPEN (0x0008) /* Light pen enable */
392 #define BPC0_LACE (0x0004) /* Interlace */
393 #define BPC0_ERSY (0x0002) /* External resync */
394 #define BPC0_ECSENA (0x0001) /* ECS enable */
397 * BPLCON2 -- Bitplane Control Register 2
400 #define BPC2_ZDBPSEL2 (0x4000) /* Bitplane to be used for ZD - AGA */
401 #define BPC2_ZDBPSEL1 (0x2000)
402 #define BPC2_ZDBPSEL0 (0x1000)
403 #define BPC2_ZDBPEN (0x0800) /* Enable ZD with ZDBPSELx - AGA */
404 #define BPC2_ZDCTEN (0x0400) /* Enable ZD with palette bit #31 - AGA */
405 #define BPC2_KILLEHB (0x0200) /* Kill EHB mode - AGA */
406 #define BPC2_RDRAM (0x0100) /* Color table accesses read, not write - AGA */
407 #define BPC2_SOGEN (0x0080) /* SOG output pin high - AGA */
408 #define BPC2_PF2PRI (0x0040) /* PF2 priority over PF1 */
409 #define BPC2_PF2P2 (0x0020) /* PF2 priority wrt sprites */
410 #define BPC2_PF2P1 (0x0010)
411 #define BPC2_PF2P0 (0x0008)
412 #define BPC2_PF1P2 (0x0004) /* ditto PF1 */
413 #define BPC2_PF1P1 (0x0002)
414 #define BPC2_PF1P0 (0x0001)
417 * BPLCON3 -- Bitplane Control Register 3 (AGA)
420 #define BPC3_BANK2 (0x8000) /* Bits to select color register bank */
421 #define BPC3_BANK1 (0x4000)
422 #define BPC3_BANK0 (0x2000)
423 #define BPC3_PF2OF2 (0x1000) /* Bits for color table offset when PF2 */
424 #define BPC3_PF2OF1 (0x0800)
425 #define BPC3_PF2OF0 (0x0400)
426 #define BPC3_LOCT (0x0200) /* Color register writes go to low bits */
427 #define BPC3_SPRES1 (0x0080) /* Sprite resolution bits */
428 #define BPC3_SPRES0 (0x0040)
429 #define BPC3_BRDRBLNK (0x0020) /* Border blanked? */
430 #define BPC3_BRDRTRAN (0x0010) /* Border transparent? */
431 #define BPC3_ZDCLKEN (0x0004) /* ZD pin is 14 MHz (HIRES) clock output */
432 #define BPC3_BRDRSPRT (0x0002) /* Sprites in border? */
433 #define BPC3_EXTBLKEN (0x0001) /* BLANK programmable */
436 * BPLCON4 -- Bitplane Control Register 4 (AGA)
439 #define BPC4_BPLAM7 (0x8000) /* bitplane color XOR field */
440 #define BPC4_BPLAM6 (0x4000)
441 #define BPC4_BPLAM5 (0x2000)
442 #define BPC4_BPLAM4 (0x1000)
443 #define BPC4_BPLAM3 (0x0800)
444 #define BPC4_BPLAM2 (0x0400)
445 #define BPC4_BPLAM1 (0x0200)
446 #define BPC4_BPLAM0 (0x0100)
447 #define BPC4_ESPRM7 (0x0080) /* 4 high bits for even sprite colors */
448 #define BPC4_ESPRM6 (0x0040)
449 #define BPC4_ESPRM5 (0x0020)
450 #define BPC4_ESPRM4 (0x0010)
451 #define BPC4_OSPRM7 (0x0008) /* 4 high bits for odd sprite colors */
452 #define BPC4_OSPRM6 (0x0004)
453 #define BPC4_OSPRM5 (0x0002)
454 #define BPC4_OSPRM4 (0x0001)
457 * BEAMCON0 -- Beam Control Register
460 #define BMC0_HARDDIS (0x4000) /* Disable hardware limits */
461 #define BMC0_LPENDIS (0x2000) /* Disable light pen latch */
462 #define BMC0_VARVBEN (0x1000) /* Enable variable vertical blank */
463 #define BMC0_LOLDIS (0x0800) /* Disable long/short line toggle */
464 #define BMC0_CSCBEN (0x0400) /* Composite sync/blank */
465 #define BMC0_VARVSYEN (0x0200) /* Enable variable vertical sync */
466 #define BMC0_VARHSYEN (0x0100) /* Enable variable horizontal sync */
467 #define BMC0_VARBEAMEN (0x0080) /* Enable variable beam counters */
468 #define BMC0_DUAL (0x0040) /* Enable alternate horizontal beam counter */
469 #define BMC0_PAL (0x0020) /* Set decodes for PAL */
470 #define BMC0_VARCSYEN (0x0010) /* Enable variable composite sync */
471 #define BMC0_BLANKEN (0x0008) /* Blank enable (no longer used on AGA) */
472 #define BMC0_CSYTRUE (0x0004) /* CSY polarity */
473 #define BMC0_VSYTRUE (0x0002) /* VSY polarity */
474 #define BMC0_HSYTRUE (0x0001) /* HSY polarity */
478 * FMODE -- Fetch Mode Control Register (AGA)
481 #define FMODE_SSCAN2 (0x8000) /* Sprite scan-doubling */
482 #define FMODE_BSCAN2 (0x4000) /* Use PF2 modulus every other line */
483 #define FMODE_SPAGEM (0x0008) /* Sprite page mode */
484 #define FMODE_SPR32 (0x0004) /* Sprite 32 bit fetch */
485 #define FMODE_BPAGEM (0x0002) /* Bitplane page mode */
486 #define FMODE_BPL32 (0x0001) /* Bitplane 32 bit fetch */
489 * Tags used to indicate a specific Pixel Clock
491 * clk_shift is the shift value to get the timings in 35 ns units
494 enum { TAG_SHRES, TAG_HIRES, TAG_LORES };
497 * Tags used to indicate the specific chipset
500 enum { TAG_OCS, TAG_ECS, TAG_AGA };
503 * Tags used to indicate the memory bandwidth
506 enum { TAG_FMODE_1, TAG_FMODE_2, TAG_FMODE_4 };
510 * Clock Definitions, Maximum Display Depth
512 * These depend on the E-Clock or the Chipset, so they are filled in
516 static u_long pixclock[3]; /* SHRES/HIRES/LORES: index = clk_shift */
517 static u_short maxdepth[3]; /* SHRES/HIRES/LORES: index = clk_shift */
518 static u_short maxfmode, chipset;
522 * Broadcast Video Timings
524 * Horizontal values are in 35 ns (SHRES) units
525 * Vertical values are in interlaced scanlines
528 #define PAL_DIWSTRT_H (360) /* PAL Window Limits */
529 #define PAL_DIWSTRT_V (48)
530 #define PAL_HTOTAL (1816)
531 #define PAL_VTOTAL (625)
533 #define NTSC_DIWSTRT_H (360) /* NTSC Window Limits */
534 #define NTSC_DIWSTRT_V (40)
535 #define NTSC_HTOTAL (1816)
536 #define NTSC_VTOTAL (525)
543 #define up2(v) (((v)+1) & -2)
544 #define down2(v) ((v) & -2)
545 #define div2(v) ((v)>>1)
546 #define mod2(v) ((v) & 1)
548 #define up4(v) (((v)+3) & -4)
549 #define down4(v) ((v) & -4)
550 #define mul4(v) ((v)<<2)
551 #define div4(v) ((v)>>2)
552 #define mod4(v) ((v) & 3)
554 #define up8(v) (((v)+7) & -8)
555 #define down8(v) ((v) & -8)
556 #define div8(v) ((v)>>3)
557 #define mod8(v) ((v) & 7)
559 #define up16(v) (((v)+15) & -16)
560 #define down16(v) ((v) & -16)
561 #define div16(v) ((v)>>4)
562 #define mod16(v) ((v) & 15)
564 #define up32(v) (((v)+31) & -32)
565 #define down32(v) ((v) & -32)
566 #define div32(v) ((v)>>5)
567 #define mod32(v) ((v) & 31)
569 #define up64(v) (((v)+63) & -64)
570 #define down64(v) ((v) & -64)
571 #define div64(v) ((v)>>6)
572 #define mod64(v) ((v) & 63)
574 #define upx(x,v) (((v)+(x)-1) & -(x))
575 #define downx(x,v) ((v) & -(x))
576 #define modx(x,v) ((v) & ((x)-1))
578 /* if x1 is not a constant, this macro won't make real sense :-) */
580 #define DIVUL(x1, x2) ({int res; asm("divul %1,%2,%3": "=d" (res): \
581 "d" (x2), "d" ((long)((x1)/0x100000000ULL)), "0" ((long)(x1))); res;})
583 /* We know a bit about the numbers, so we can do it this way */
584 #define DIVUL(x1, x2) ((((long)((unsigned long long)x1 >> 8) / x2) << 8) + \
585 ((((long)((unsigned long long)x1 >> 8) % x2) << 8) / x2))
588 #define highw(x) ((u_long)(x)>>16 & 0xffff)
589 #define loww(x) ((u_long)(x) & 0xffff)
591 #define custom amiga_custom
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 fb_info *info, unsigned int cmd, unsigned long arg);
1136 * Interface to the low level console driver
1139 int amifb_init(void);
1140 static void amifb_deinit(void);
1146 static int flash_cursor(void);
1147 static irqreturn_t amifb_interrupt(int irq, void *dev_id);
1148 static u_long chipalloc(u_long size);
1149 static void chipfree(void);
1155 static int ami_decode_var(struct fb_var_screeninfo *var,
1156 struct amifb_par *par);
1157 static int ami_encode_var(struct fb_var_screeninfo *var,
1158 struct amifb_par *par);
1159 static void ami_pan_var(struct fb_var_screeninfo *var);
1160 static int ami_update_par(void);
1161 static void ami_update_display(void);
1162 static void ami_init_display(void);
1163 static void ami_do_blank(void);
1164 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix);
1165 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data);
1166 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data);
1167 static int ami_get_cursorstate(struct fb_cursorstate *state);
1168 static int ami_set_cursorstate(struct fb_cursorstate *state);
1169 static void ami_set_sprite(void);
1170 static void ami_init_copper(void);
1171 static void ami_reinit_copper(void);
1172 static void ami_build_copper(void);
1173 static void ami_rebuild_copper(void);
1176 static struct fb_ops amifb_ops = {
1177 .owner = THIS_MODULE,
1178 .fb_check_var = amifb_check_var,
1179 .fb_set_par = amifb_set_par,
1180 .fb_setcolreg = amifb_setcolreg,
1181 .fb_blank = amifb_blank,
1182 .fb_pan_display = amifb_pan_display,
1183 .fb_fillrect = amifb_fillrect,
1184 .fb_copyarea = amifb_copyarea,
1185 .fb_imageblit = amifb_imageblit,
1186 .fb_ioctl = amifb_ioctl,
1189 static void __init amifb_setup_mcap(char *spec)
1192 int vmin, vmax, hmin, hmax;
1194 /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax>
1195 * <V*> vertical freq. in Hz
1196 * <H*> horizontal freq. in kHz
1199 if (!(p = strsep(&spec, ";")) || !*p)
1201 vmin = simple_strtoul(p, NULL, 10);
1204 if (!(p = strsep(&spec, ";")) || !*p)
1206 vmax = simple_strtoul(p, NULL, 10);
1207 if (vmax <= 0 || vmax <= vmin)
1209 if (!(p = strsep(&spec, ";")) || !*p)
1211 hmin = 1000 * simple_strtoul(p, NULL, 10);
1214 if (!(p = strsep(&spec, "")) || !*p)
1216 hmax = 1000 * simple_strtoul(p, NULL, 10);
1217 if (hmax <= 0 || hmax <= hmin)
1220 fb_info.monspecs.vfmin = vmin;
1221 fb_info.monspecs.vfmax = vmax;
1222 fb_info.monspecs.hfmin = hmin;
1223 fb_info.monspecs.hfmax = hmax;
1226 int __init amifb_setup(char *options)
1230 if (!options || !*options)
1233 while ((this_opt = strsep(&options, ",")) != NULL) {
1236 if (!strcmp(this_opt, "inverse")) {
1239 } else if (!strcmp(this_opt, "ilbm"))
1241 else if (!strncmp(this_opt, "monitorcap:", 11))
1242 amifb_setup_mcap(this_opt+11);
1243 else if (!strncmp(this_opt, "fstart:", 7))
1244 min_fstrt = simple_strtoul(this_opt+7, NULL, 0);
1246 mode_option = this_opt;
1256 static int amifb_check_var(struct fb_var_screeninfo *var,
1257 struct fb_info *info)
1260 struct amifb_par par;
1262 /* Validate wanted screen parameters */
1263 if ((err = ami_decode_var(var, &par)))
1266 /* Encode (possibly rounded) screen parameters */
1267 ami_encode_var(var, &par);
1272 static int amifb_set_par(struct fb_info *info)
1274 struct amifb_par *par = (struct amifb_par *)info->par;
1279 /* Decode wanted screen parameters */
1280 ami_decode_var(&info->var, par);
1282 /* Set new videomode */
1285 /* Set VBlank trigger */
1288 /* Update fix for new screen parameters */
1289 if (par->bpp == 1) {
1290 info->fix.type = FB_TYPE_PACKED_PIXELS;
1291 info->fix.type_aux = 0;
1292 } else if (amifb_ilbm) {
1293 info->fix.type = FB_TYPE_INTERLEAVED_PLANES;
1294 info->fix.type_aux = par->next_line;
1296 info->fix.type = FB_TYPE_PLANES;
1297 info->fix.type_aux = 0;
1299 info->fix.line_length = div8(upx(16<<maxfmode, par->vxres));
1301 if (par->vmode & FB_VMODE_YWRAP) {
1302 info->fix.ywrapstep = 1;
1303 info->fix.xpanstep = 0;
1304 info->fix.ypanstep = 0;
1305 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YWRAP |
1306 FBINFO_READS_FAST; /* override SCROLL_REDRAW */
1308 info->fix.ywrapstep = 0;
1309 if (par->vmode & FB_VMODE_SMOOTH_XPAN)
1310 info->fix.xpanstep = 1;
1312 info->fix.xpanstep = 16<<maxfmode;
1313 info->fix.ypanstep = 1;
1314 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1321 * Pan or Wrap the Display
1323 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1326 static int amifb_pan_display(struct fb_var_screeninfo *var,
1327 struct fb_info *info)
1329 if (var->vmode & FB_VMODE_YWRAP) {
1330 if (var->yoffset < 0 ||
1331 var->yoffset >= info->var.yres_virtual || var->xoffset)
1335 * TODO: There will be problems when xpan!=1, so some columns
1336 * on the right side will never be seen
1338 if (var->xoffset+info->var.xres > upx(16<<maxfmode, info->var.xres_virtual) ||
1339 var->yoffset+info->var.yres > info->var.yres_virtual)
1343 info->var.xoffset = var->xoffset;
1344 info->var.yoffset = var->yoffset;
1345 if (var->vmode & FB_VMODE_YWRAP)
1346 info->var.vmode |= FB_VMODE_YWRAP;
1348 info->var.vmode &= ~FB_VMODE_YWRAP;
1353 #if BITS_PER_LONG == 32
1354 #define BYTES_PER_LONG 4
1355 #define SHIFT_PER_LONG 5
1356 #elif BITS_PER_LONG == 64
1357 #define BYTES_PER_LONG 8
1358 #define SHIFT_PER_LONG 6
1360 #define Please update me
1365 * Compose two values, using a bitmask as decision value
1366 * This is equivalent to (a & mask) | (b & ~mask)
1369 static inline unsigned long comp(unsigned long a, unsigned long b,
1372 return ((a ^ b) & mask) ^ b;
1376 static inline unsigned long xor(unsigned long a, unsigned long b,
1379 return (a & mask) ^ b;
1384 * Unaligned forward bit copy using 32-bit or 64-bit memory accesses
1387 static void bitcpy(unsigned long *dst, int dst_idx, const unsigned long *src,
1390 unsigned long first, last;
1391 int shift = dst_idx-src_idx, left, right;
1392 unsigned long d0, d1;
1398 shift = dst_idx-src_idx;
1399 first = ~0UL >> dst_idx;
1400 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1403 // Same alignment for source and dest
1405 if (dst_idx+n <= BITS_PER_LONG) {
1409 *dst = comp(*src, *dst, first);
1411 // Multiple destination words
1414 *dst = comp(*src, *dst, first);
1417 n -= BITS_PER_LONG-dst_idx;
1438 *dst = comp(*src, *dst, last);
1441 // Different alignment for source and dest
1443 right = shift & (BITS_PER_LONG-1);
1444 left = -shift & (BITS_PER_LONG-1);
1446 if (dst_idx+n <= BITS_PER_LONG) {
1447 // Single destination word
1451 // Single source word
1452 *dst = comp(*src >> right, *dst, first);
1453 } else if (src_idx+n <= BITS_PER_LONG) {
1454 // Single source word
1455 *dst = comp(*src << left, *dst, first);
1460 *dst = comp(d0 << left | d1 >> right, *dst,
1464 // Multiple destination words
1468 // Single source word
1469 *dst = comp(d0 >> right, *dst, first);
1471 n -= BITS_PER_LONG-dst_idx;
1475 *dst = comp(d0 << left | d1 >> right, *dst,
1479 n -= BITS_PER_LONG-dst_idx;
1483 m = n % BITS_PER_LONG;
1487 *dst++ = d0 << left | d1 >> right;
1490 *dst++ = d0 << left | d1 >> right;
1493 *dst++ = d0 << left | d1 >> right;
1496 *dst++ = d0 << left | d1 >> right;
1502 *dst++ = d0 << left | d1 >> right;
1509 // Single source word
1510 *dst = comp(d0 << left, *dst, last);
1514 *dst = comp(d0 << left | d1 >> right,
1524 * Unaligned reverse bit copy using 32-bit or 64-bit memory accesses
1527 static void bitcpy_rev(unsigned long *dst, int dst_idx,
1528 const unsigned long *src, int src_idx, u32 n)
1530 unsigned long first, last;
1531 int shift = dst_idx-src_idx, left, right;
1532 unsigned long d0, d1;
1538 dst += (n-1)/BITS_PER_LONG;
1539 src += (n-1)/BITS_PER_LONG;
1540 if ((n-1) % BITS_PER_LONG) {
1541 dst_idx += (n-1) % BITS_PER_LONG;
1542 dst += dst_idx >> SHIFT_PER_LONG;
1543 dst_idx &= BITS_PER_LONG-1;
1544 src_idx += (n-1) % BITS_PER_LONG;
1545 src += src_idx >> SHIFT_PER_LONG;
1546 src_idx &= BITS_PER_LONG-1;
1549 shift = dst_idx-src_idx;
1550 first = ~0UL << (BITS_PER_LONG-1-dst_idx);
1551 last = ~(~0UL << (BITS_PER_LONG-1-((dst_idx-n) % BITS_PER_LONG)));
1554 // Same alignment for source and dest
1556 if ((unsigned long)dst_idx+1 >= n) {
1560 *dst = comp(*src, *dst, first);
1562 // Multiple destination words
1565 *dst = comp(*src, *dst, first);
1589 *dst = comp(*src, *dst, last);
1592 // Different alignment for source and dest
1594 right = shift & (BITS_PER_LONG-1);
1595 left = -shift & (BITS_PER_LONG-1);
1597 if ((unsigned long)dst_idx+1 >= n) {
1598 // Single destination word
1602 // Single source word
1603 *dst = comp(*src << left, *dst, first);
1604 } else if (1+(unsigned long)src_idx >= n) {
1605 // Single source word
1606 *dst = comp(*src >> right, *dst, first);
1611 *dst = comp(d0 >> right | d1 << left, *dst,
1615 // Multiple destination words
1619 // Single source word
1620 *dst = comp(d0 << left, *dst, first);
1626 *dst = comp(d0 >> right | d1 << left, *dst,
1634 m = n % BITS_PER_LONG;
1638 *dst-- = d0 >> right | d1 << left;
1641 *dst-- = d0 >> right | d1 << left;
1644 *dst-- = d0 >> right | d1 << left;
1647 *dst-- = d0 >> right | d1 << left;
1653 *dst-- = d0 >> right | d1 << left;
1660 // Single source word
1661 *dst = comp(d0 >> right, *dst, last);
1665 *dst = comp(d0 >> right | d1 << left,
1675 * Unaligned forward inverting bit copy using 32-bit or 64-bit memory
1679 static void bitcpy_not(unsigned long *dst, int dst_idx,
1680 const unsigned long *src, int src_idx, u32 n)
1682 unsigned long first, last;
1683 int shift = dst_idx-src_idx, left, right;
1684 unsigned long d0, d1;
1690 shift = dst_idx-src_idx;
1691 first = ~0UL >> dst_idx;
1692 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1695 // Same alignment for source and dest
1697 if (dst_idx+n <= BITS_PER_LONG) {
1701 *dst = comp(~*src, *dst, first);
1703 // Multiple destination words
1706 *dst = comp(~*src, *dst, first);
1709 n -= BITS_PER_LONG-dst_idx;
1730 *dst = comp(~*src, *dst, last);
1733 // Different alignment for source and dest
1735 right = shift & (BITS_PER_LONG-1);
1736 left = -shift & (BITS_PER_LONG-1);
1738 if (dst_idx+n <= BITS_PER_LONG) {
1739 // Single destination word
1743 // Single source word
1744 *dst = comp(~*src >> right, *dst, first);
1745 } else if (src_idx+n <= BITS_PER_LONG) {
1746 // Single source word
1747 *dst = comp(~*src << left, *dst, first);
1752 *dst = comp(d0 << left | d1 >> right, *dst,
1756 // Multiple destination words
1760 // Single source word
1761 *dst = comp(d0 >> right, *dst, first);
1763 n -= BITS_PER_LONG-dst_idx;
1767 *dst = comp(d0 << left | d1 >> right, *dst,
1771 n -= BITS_PER_LONG-dst_idx;
1775 m = n % BITS_PER_LONG;
1779 *dst++ = d0 << left | d1 >> right;
1782 *dst++ = d0 << left | d1 >> right;
1785 *dst++ = d0 << left | d1 >> right;
1788 *dst++ = d0 << left | d1 >> right;
1794 *dst++ = d0 << left | d1 >> right;
1801 // Single source word
1802 *dst = comp(d0 << left, *dst, last);
1806 *dst = comp(d0 << left | d1 >> right,
1816 * Unaligned 32-bit pattern fill using 32/64-bit memory accesses
1819 static void bitfill32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1821 unsigned long val = pat;
1822 unsigned long first, last;
1827 #if BITS_PER_LONG == 64
1831 first = ~0UL >> dst_idx;
1832 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1834 if (dst_idx+n <= BITS_PER_LONG) {
1838 *dst = comp(val, *dst, first);
1840 // Multiple destination words
1843 *dst = comp(val, *dst, first);
1845 n -= BITS_PER_LONG-dst_idx;
1866 *dst = comp(val, *dst, last);
1872 * Unaligned 32-bit pattern xor using 32/64-bit memory accesses
1875 static void bitxor32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1877 unsigned long val = pat;
1878 unsigned long first, last;
1883 #if BITS_PER_LONG == 64
1887 first = ~0UL >> dst_idx;
1888 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1890 if (dst_idx+n <= BITS_PER_LONG) {
1894 *dst = xor(val, *dst, first);
1896 // Multiple destination words
1899 *dst = xor(val, *dst, first);
1901 n -= BITS_PER_LONG-dst_idx;
1918 *dst = xor(val, *dst, last);
1922 static inline void fill_one_line(int bpp, unsigned long next_plane,
1923 unsigned long *dst, int dst_idx, u32 n,
1927 dst += dst_idx >> SHIFT_PER_LONG;
1928 dst_idx &= (BITS_PER_LONG-1);
1929 bitfill32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1933 dst_idx += next_plane*8;
1937 static inline void xor_one_line(int bpp, unsigned long next_plane,
1938 unsigned long *dst, int dst_idx, u32 n,
1942 dst += dst_idx >> SHIFT_PER_LONG;
1943 dst_idx &= (BITS_PER_LONG-1);
1944 bitxor32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1948 dst_idx += next_plane*8;
1953 static void amifb_fillrect(struct fb_info *info,
1954 const struct fb_fillrect *rect)
1956 struct amifb_par *par = (struct amifb_par *)info->par;
1957 int dst_idx, x2, y2;
1961 if (!rect->width || !rect->height)
1965 * We could use hardware clipping but on many cards you get around
1966 * hardware clipping by writing to framebuffer directly.
1968 x2 = rect->dx + rect->width;
1969 y2 = rect->dy + rect->height;
1970 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
1971 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
1972 width = x2 - rect->dx;
1973 height = y2 - rect->dy;
1975 dst = (unsigned long *)
1976 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
1977 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
1978 dst_idx += rect->dy*par->next_line*8+rect->dx;
1980 switch (rect->rop) {
1982 fill_one_line(info->var.bits_per_pixel,
1983 par->next_plane, dst, dst_idx, width,
1988 xor_one_line(info->var.bits_per_pixel, par->next_plane,
1989 dst, dst_idx, width, rect->color);
1992 dst_idx += par->next_line*8;
1996 static inline void copy_one_line(int bpp, unsigned long next_plane,
1997 unsigned long *dst, int dst_idx,
1998 unsigned long *src, int src_idx, u32 n)
2001 dst += dst_idx >> SHIFT_PER_LONG;
2002 dst_idx &= (BITS_PER_LONG-1);
2003 src += src_idx >> SHIFT_PER_LONG;
2004 src_idx &= (BITS_PER_LONG-1);
2005 bitcpy(dst, dst_idx, src, src_idx, n);
2008 dst_idx += next_plane*8;
2009 src_idx += next_plane*8;
2013 static inline void copy_one_line_rev(int bpp, unsigned long next_plane,
2014 unsigned long *dst, int dst_idx,
2015 unsigned long *src, int src_idx, u32 n)
2018 dst += dst_idx >> SHIFT_PER_LONG;
2019 dst_idx &= (BITS_PER_LONG-1);
2020 src += src_idx >> SHIFT_PER_LONG;
2021 src_idx &= (BITS_PER_LONG-1);
2022 bitcpy_rev(dst, dst_idx, src, src_idx, n);
2025 dst_idx += next_plane*8;
2026 src_idx += next_plane*8;
2031 static void amifb_copyarea(struct fb_info *info,
2032 const struct fb_copyarea *area)
2034 struct amifb_par *par = (struct amifb_par *)info->par;
2036 u32 dx, dy, sx, sy, width, height;
2037 unsigned long *dst, *src;
2038 int dst_idx, src_idx;
2041 /* clip the destination */
2042 x2 = area->dx + area->width;
2043 y2 = area->dy + area->height;
2044 dx = area->dx > 0 ? area->dx : 0;
2045 dy = area->dy > 0 ? area->dy : 0;
2046 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2047 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2052 sx = area->sx + (dx - area->dx);
2053 sy = area->sy + (dy - area->dy);
2055 /* the source must be completely inside the virtual screen */
2056 if (sx < 0 || sy < 0 || (sx + width) > info->var.xres_virtual ||
2057 (sy + height) > info->var.yres_virtual)
2060 if (dy > sy || (dy == sy && dx > sx)) {
2065 dst = (unsigned long *)
2066 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2068 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2070 dst_idx += dy*par->next_line*8+dx;
2071 src_idx += sy*par->next_line*8+sx;
2074 dst_idx -= par->next_line*8;
2075 src_idx -= par->next_line*8;
2076 copy_one_line_rev(info->var.bits_per_pixel,
2077 par->next_plane, dst, dst_idx, src,
2082 copy_one_line(info->var.bits_per_pixel,
2083 par->next_plane, dst, dst_idx, src,
2085 dst_idx += par->next_line*8;
2086 src_idx += par->next_line*8;
2092 static inline void expand_one_line(int bpp, unsigned long next_plane,
2093 unsigned long *dst, int dst_idx, u32 n,
2094 const u8 *data, u32 bgcolor, u32 fgcolor)
2096 const unsigned long *src;
2100 dst += dst_idx >> SHIFT_PER_LONG;
2101 dst_idx &= (BITS_PER_LONG-1);
2102 if ((bgcolor ^ fgcolor) & 1) {
2103 src = (unsigned long *)((unsigned long)data & ~(BYTES_PER_LONG-1));
2104 src_idx = ((unsigned long)data & (BYTES_PER_LONG-1))*8;
2106 bitcpy(dst, dst_idx, src, src_idx, n);
2108 bitcpy_not(dst, dst_idx, src, src_idx, n);
2111 bitfill32(dst, dst_idx, fgcolor & 1 ? ~0 : 0, n);
2116 dst_idx += next_plane*8;
2121 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
2123 struct amifb_par *par = (struct amifb_par *)info->par;
2128 u32 dx, dy, width, height, pitch;
2131 * We could use hardware clipping but on many cards you get around
2132 * hardware clipping by writing to framebuffer directly like we are
2135 x2 = image->dx + image->width;
2136 y2 = image->dy + image->height;
2139 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2140 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2144 if (image->depth == 1) {
2145 dst = (unsigned long *)
2146 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2147 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2148 dst_idx += dy*par->next_line*8+dx;
2150 pitch = (image->width+7)/8;
2152 expand_one_line(info->var.bits_per_pixel,
2153 par->next_plane, dst, dst_idx, width,
2154 src, image->bg_color,
2156 dst_idx += par->next_line*8;
2160 c2p(info->screen_base, image->data, dx, dy, width, height,
2161 par->next_line, par->next_plane, image->width,
2162 info->var.bits_per_pixel);
2168 * Amiga Frame Buffer Specific ioctls
2171 static int amifb_ioctl(struct fb_info *info,
2172 unsigned int cmd, unsigned long arg)
2175 struct fb_fix_cursorinfo fix;
2176 struct fb_var_cursorinfo var;
2177 struct fb_cursorstate state;
2179 void __user *argp = (void __user *)arg;
2183 case FBIOGET_FCURSORINFO:
2184 i = ami_get_fix_cursorinfo(&crsr.fix);
2187 return copy_to_user(argp, &crsr.fix,
2188 sizeof(crsr.fix)) ? -EFAULT : 0;
2190 case FBIOGET_VCURSORINFO:
2191 i = ami_get_var_cursorinfo(&crsr.var,
2192 ((struct fb_var_cursorinfo __user *)arg)->data);
2195 return copy_to_user(argp, &crsr.var,
2196 sizeof(crsr.var)) ? -EFAULT : 0;
2198 case FBIOPUT_VCURSORINFO:
2199 if (copy_from_user(&crsr.var, argp, sizeof(crsr.var)))
2201 return ami_set_var_cursorinfo(&crsr.var,
2202 ((struct fb_var_cursorinfo __user *)arg)->data);
2204 case FBIOGET_CURSORSTATE:
2205 i = ami_get_cursorstate(&crsr.state);
2208 return copy_to_user(argp, &crsr.state,
2209 sizeof(crsr.state)) ? -EFAULT : 0;
2211 case FBIOPUT_CURSORSTATE:
2212 if (copy_from_user(&crsr.state, argp,
2213 sizeof(crsr.state)))
2215 return ami_set_cursorstate(&crsr.state);
2222 * Allocate, Clear and Align a Block of Chip Memory
2225 static u_long unaligned_chipptr = 0;
2227 static inline u_long __init chipalloc(u_long size)
2229 size += PAGE_SIZE-1;
2230 if (!(unaligned_chipptr = (u_long)amiga_chip_alloc(size,
2232 panic("No Chip RAM for frame buffer");
2233 memset((void *)unaligned_chipptr, 0, size);
2234 return PAGE_ALIGN(unaligned_chipptr);
2237 static inline void chipfree(void)
2239 if (unaligned_chipptr)
2240 amiga_chip_free((void *)unaligned_chipptr);
2248 int __init amifb_init(void)
2250 int tag, i, err = 0;
2255 char *option = NULL;
2257 if (fb_get_options("amifb", &option)) {
2261 amifb_setup(option);
2263 if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_VIDEO))
2267 * We request all registers starting from bplpt[0]
2269 if (!request_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120,
2270 "amifb [Denise/Lisa]"))
2273 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2275 switch (amiga_chipset) {
2276 #ifdef CONFIG_FB_AMIGA_OCS
2278 strcat(fb_info.fix.id, "OCS");
2281 maxdepth[TAG_SHRES] = 0; /* OCS means no SHRES */
2282 maxdepth[TAG_HIRES] = 4;
2283 maxdepth[TAG_LORES] = 6;
2284 maxfmode = TAG_FMODE_1;
2285 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2287 fb_info.fix.smem_len = VIDEOMEMSIZE_OCS;
2289 #endif /* CONFIG_FB_AMIGA_OCS */
2291 #ifdef CONFIG_FB_AMIGA_ECS
2293 strcat(fb_info.fix.id, "ECS");
2295 maxdepth[TAG_SHRES] = 2;
2296 maxdepth[TAG_HIRES] = 4;
2297 maxdepth[TAG_LORES] = 6;
2298 maxfmode = TAG_FMODE_1;
2299 if (AMIGAHW_PRESENT(AMBER_FF))
2300 defmode = amiga_vblank == 50 ? DEFMODE_AMBER_PAL
2301 : DEFMODE_AMBER_NTSC;
2303 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2305 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2306 VIDEOMEMSIZE_ECS_1M)
2307 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_2M;
2309 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_1M;
2311 #endif /* CONFIG_FB_AMIGA_ECS */
2313 #ifdef CONFIG_FB_AMIGA_AGA
2315 strcat(fb_info.fix.id, "AGA");
2317 maxdepth[TAG_SHRES] = 8;
2318 maxdepth[TAG_HIRES] = 8;
2319 maxdepth[TAG_LORES] = 8;
2320 maxfmode = TAG_FMODE_4;
2321 defmode = DEFMODE_AGA;
2322 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2323 VIDEOMEMSIZE_AGA_1M)
2324 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_2M;
2326 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_1M;
2328 #endif /* CONFIG_FB_AMIGA_AGA */
2331 #ifdef CONFIG_FB_AMIGA_OCS
2332 printk("Unknown graphics chipset, defaulting to OCS\n");
2333 strcat(fb_info.fix.id, "Unknown");
2334 goto default_chipset;
2335 #else /* CONFIG_FB_AMIGA_OCS */
2338 #endif /* CONFIG_FB_AMIGA_OCS */
2343 * Calculate the Pixel Clock Values for this Machine
2347 u_long tmp = DIVUL(200000000000ULL, amiga_eclock);
2349 pixclock[TAG_SHRES] = (tmp + 4) / 8; /* SHRES: 35 ns / 28 MHz */
2350 pixclock[TAG_HIRES] = (tmp + 2) / 4; /* HIRES: 70 ns / 14 MHz */
2351 pixclock[TAG_LORES] = (tmp + 1) / 2; /* LORES: 140 ns / 7 MHz */
2355 * Replace the Tag Values with the Real Pixel Clock Values
2358 for (i = 0; i < NUM_TOTAL_MODES; i++) {
2359 struct fb_videomode *mode = &ami_modedb[i];
2360 tag = mode->pixclock;
2361 if (tag == TAG_SHRES || tag == TAG_HIRES || tag == TAG_LORES) {
2362 mode->pixclock = pixclock[tag];
2367 * These monitor specs are for a typical Amiga monitor (e.g. A1960)
2369 if (fb_info.monspecs.hfmin == 0) {
2370 fb_info.monspecs.hfmin = 15000;
2371 fb_info.monspecs.hfmax = 38000;
2372 fb_info.monspecs.vfmin = 49;
2373 fb_info.monspecs.vfmax = 90;
2376 fb_info.fbops = &amifb_ops;
2377 fb_info.par = ¤tpar;
2378 fb_info.flags = FBINFO_DEFAULT;
2380 if (!fb_find_mode(&fb_info.var, &fb_info, mode_option, ami_modedb,
2381 NUM_TOTAL_MODES, &ami_modedb[defmode], 4)) {
2387 chipptr = chipalloc(fb_info.fix.smem_len+
2393 assignchunk(videomemory, u_long, chipptr, fb_info.fix.smem_len);
2394 assignchunk(spritememory, u_long, chipptr, SPRITEMEMSIZE);
2395 assignchunk(dummysprite, u_short *, chipptr, DUMMYSPRITEMEMSIZE);
2396 assignchunk(copdisplay.init, copins *, chipptr, COPINITSIZE);
2397 assignchunk(copdisplay.list[0][0], copins *, chipptr, COPLISTSIZE);
2398 assignchunk(copdisplay.list[0][1], copins *, chipptr, COPLISTSIZE);
2399 assignchunk(copdisplay.list[1][0], copins *, chipptr, COPLISTSIZE);
2400 assignchunk(copdisplay.list[1][1], copins *, chipptr, COPLISTSIZE);
2403 * access the videomem with writethrough cache
2405 fb_info.fix.smem_start = (u_long)ZTWO_PADDR(videomemory);
2406 videomemory = (u_long)ioremap_writethrough(fb_info.fix.smem_start,
2407 fb_info.fix.smem_len);
2409 printk("amifb: WARNING! unable to map videomem cached writethrough\n");
2410 fb_info.screen_base = (char *)ZTWO_VADDR(fb_info.fix.smem_start);
2412 fb_info.screen_base = (char *)videomemory;
2414 memset(dummysprite, 0, DUMMYSPRITEMEMSIZE);
2417 * Enable Display DMA
2420 custom.dmacon = DMAF_SETCLR | DMAF_MASTER | DMAF_RASTER | DMAF_COPPER |
2421 DMAF_BLITTER | DMAF_SPRITE;
2424 * Make sure the Copper has something to do
2429 if (request_irq(IRQ_AMIGA_COPPER, amifb_interrupt, 0,
2430 "fb vertb handler", ¤tpar)) {
2435 fb_alloc_cmap(&fb_info.cmap, 1<<fb_info.var.bits_per_pixel, 0);
2437 if (register_framebuffer(&fb_info) < 0) {
2442 printk("fb%d: %s frame buffer device, using %dK of video memory\n",
2443 fb_info.node, fb_info.fix.id, fb_info.fix.smem_len>>10);
2452 static void amifb_deinit(void)
2454 fb_dealloc_cmap(&fb_info.cmap);
2457 iounmap((void*)videomemory);
2458 release_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120);
2459 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2464 * Blank the display.
2467 static int amifb_blank(int blank, struct fb_info *info)
2469 do_blank = blank ? blank : -1;
2475 * Flash the cursor (called by VBlank interrupt)
2478 static int flash_cursor(void)
2480 static int cursorcount = 1;
2482 if (cursormode == FB_CURSOR_FLASH) {
2483 if (!--cursorcount) {
2484 cursorstate = -cursorstate;
2485 cursorcount = cursorrate;
2494 * VBlank Display Interrupt
2497 static irqreturn_t amifb_interrupt(int irq, void *dev_id)
2499 if (do_vmode_pan || do_vmode_full)
2500 ami_update_display();
2507 ami_rebuild_copper();
2508 do_cursor = do_vmode_pan = 0;
2509 } else if (do_cursor) {
2523 if (do_vmode_full) {
2524 ami_reinit_copper();
2530 /* --------------------------- Hardware routines --------------------------- */
2533 * Get the video params out of `var'. If a value doesn't fit, round
2534 * it up, if it's too big, return -EINVAL.
2537 static int ami_decode_var(struct fb_var_screeninfo *var,
2538 struct amifb_par *par)
2540 u_short clk_shift, line_shift;
2541 u_long maxfetchstop, fstrt, fsize, fconst, xres_n, yres_n;
2542 u_int htotal, vtotal;
2545 * Find a matching Pixel Clock
2548 for (clk_shift = TAG_SHRES; clk_shift <= TAG_LORES; clk_shift++)
2549 if (var->pixclock <= pixclock[clk_shift])
2551 if (clk_shift > TAG_LORES) {
2552 DPRINTK("pixclock too high\n");
2555 par->clk_shift = clk_shift;
2558 * Check the Geometry Values
2561 if ((par->xres = var->xres) < 64)
2563 if ((par->yres = var->yres) < 64)
2565 if ((par->vxres = var->xres_virtual) < par->xres)
2566 par->vxres = par->xres;
2567 if ((par->vyres = var->yres_virtual) < par->yres)
2568 par->vyres = par->yres;
2570 par->bpp = var->bits_per_pixel;
2574 if (par->bpp > maxdepth[clk_shift]) {
2575 if (round_down_bpp && maxdepth[clk_shift])
2576 par->bpp = maxdepth[clk_shift];
2578 DPRINTK("invalid bpp\n");
2582 } else if (var->nonstd == FB_NONSTD_HAM) {
2585 if (par->bpp != 6) {
2588 if (par->bpp != 8 || !IS_AGA) {
2589 DPRINTK("invalid bpp for ham mode\n");
2594 DPRINTK("unknown nonstd mode\n");
2599 * FB_VMODE_SMOOTH_XPAN will be cleared, if one of the folloing
2600 * checks failed and smooth scrolling is not possible
2603 par->vmode = var->vmode | FB_VMODE_SMOOTH_XPAN;
2604 switch (par->vmode & FB_VMODE_MASK) {
2605 case FB_VMODE_INTERLACED:
2608 case FB_VMODE_NONINTERLACED:
2611 case FB_VMODE_DOUBLE:
2613 DPRINTK("double mode only possible with aga\n");
2619 DPRINTK("unknown video mode\n");
2623 par->line_shift = line_shift;
2626 * Vertical and Horizontal Timings
2629 xres_n = par->xres<<clk_shift;
2630 yres_n = par->yres<<line_shift;
2631 par->htotal = down8((var->left_margin+par->xres+var->right_margin+var->hsync_len)<<clk_shift);
2632 par->vtotal = down2(((var->upper_margin+par->yres+var->lower_margin+var->vsync_len)<<line_shift)+1);
2635 par->bplcon3 = sprpixmode[clk_shift];
2638 if (var->sync & FB_SYNC_BROADCAST) {
2639 par->diwstop_h = par->htotal-((var->right_margin-var->hsync_len)<<clk_shift);
2641 par->diwstop_h += mod4(var->hsync_len);
2643 par->diwstop_h = down4(par->diwstop_h);
2645 par->diwstrt_h = par->diwstop_h - xres_n;
2646 par->diwstop_v = par->vtotal-((var->lower_margin-var->vsync_len)<<line_shift);
2647 par->diwstrt_v = par->diwstop_v - yres_n;
2648 if (par->diwstop_h >= par->htotal+8) {
2649 DPRINTK("invalid diwstop_h\n");
2652 if (par->diwstop_v > par->vtotal) {
2653 DPRINTK("invalid diwstop_v\n");
2658 /* Initialize sync with some reasonable values for pwrsave */
2669 if (par->vtotal > (PAL_VTOTAL+NTSC_VTOTAL)/2) {
2670 /* PAL video mode */
2671 if (par->htotal != PAL_HTOTAL) {
2672 DPRINTK("htotal invalid for pal\n");
2675 if (par->diwstrt_h < PAL_DIWSTRT_H) {
2676 DPRINTK("diwstrt_h too low for pal\n");
2679 if (par->diwstrt_v < PAL_DIWSTRT_V) {
2680 DPRINTK("diwstrt_v too low for pal\n");
2683 htotal = PAL_HTOTAL>>clk_shift;
2684 vtotal = PAL_VTOTAL>>1;
2686 par->beamcon0 = BMC0_PAL;
2687 par->bplcon3 |= BPC3_BRDRBLNK;
2688 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2689 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2690 par->beamcon0 = BMC0_PAL;
2692 } else if (amiga_vblank != 50) {
2693 DPRINTK("pal not supported by this chipset\n");
2698 * In the AGA chipset seems to be hardware bug with BPC3_BRDRBLNK
2699 * and NTSC activated, so than better let diwstop_h <= 1812
2701 if (par->htotal != NTSC_HTOTAL) {
2702 DPRINTK("htotal invalid for ntsc\n");
2705 if (par->diwstrt_h < NTSC_DIWSTRT_H) {
2706 DPRINTK("diwstrt_h too low for ntsc\n");
2709 if (par->diwstrt_v < NTSC_DIWSTRT_V) {
2710 DPRINTK("diwstrt_v too low for ntsc\n");
2713 htotal = NTSC_HTOTAL>>clk_shift;
2714 vtotal = NTSC_VTOTAL>>1;
2717 par->bplcon3 |= BPC3_BRDRBLNK;
2718 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2719 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2722 } else if (amiga_vblank != 60) {
2723 DPRINTK("ntsc not supported by this chipset\n");
2728 if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
2729 par->diwstrt_v >= 512 || par->diwstop_v < 256) {
2730 DPRINTK("invalid position for display on ocs\n");
2734 } else if (!IS_OCS) {
2735 /* Programmable video mode */
2736 par->hsstrt = var->right_margin<<clk_shift;
2737 par->hsstop = (var->right_margin+var->hsync_len)<<clk_shift;
2738 par->diwstop_h = par->htotal - mod8(par->hsstrt) + 8 - (1 << clk_shift);
2740 par->diwstop_h = down4(par->diwstop_h) - 16;
2741 par->diwstrt_h = par->diwstop_h - xres_n;
2742 par->hbstop = par->diwstrt_h + 4;
2743 par->hbstrt = par->diwstop_h + 4;
2744 if (par->hbstrt >= par->htotal + 8)
2745 par->hbstrt -= par->htotal;
2746 par->hcenter = par->hsstrt + (par->htotal >> 1);
2747 par->vsstrt = var->lower_margin<<line_shift;
2748 par->vsstop = (var->lower_margin+var->vsync_len)<<line_shift;
2749 par->diwstop_v = par->vtotal;
2750 if ((par->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
2751 par->diwstop_v -= 2;
2752 par->diwstrt_v = par->diwstop_v - yres_n;
2753 par->vbstop = par->diwstrt_v - 2;
2754 par->vbstrt = par->diwstop_v - 2;
2755 if (par->vtotal > 2048) {
2756 DPRINTK("vtotal too high\n");
2759 if (par->htotal > 2048) {
2760 DPRINTK("htotal too high\n");
2763 par->bplcon3 |= BPC3_EXTBLKEN;
2764 par->beamcon0 = BMC0_HARDDIS | BMC0_VARVBEN | BMC0_LOLDIS |
2765 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARBEAMEN |
2766 BMC0_PAL | BMC0_VARCSYEN;
2767 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
2768 par->beamcon0 |= BMC0_HSYTRUE;
2769 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
2770 par->beamcon0 |= BMC0_VSYTRUE;
2771 if (var->sync & FB_SYNC_COMP_HIGH_ACT)
2772 par->beamcon0 |= BMC0_CSYTRUE;
2773 htotal = par->htotal>>clk_shift;
2774 vtotal = par->vtotal>>1;
2776 DPRINTK("only broadcast modes possible for ocs\n");
2781 * Checking the DMA timing
2784 fconst = 16<<maxfmode<<clk_shift;
2787 * smallest window start value without turn off other dma cycles
2788 * than sprite1-7, unless you change min_fstrt
2792 fsize = ((maxfmode+clk_shift <= 1) ? fconst : 64);
2793 fstrt = downx(fconst, par->diwstrt_h-4) - fsize;
2794 if (fstrt < min_fstrt) {
2795 DPRINTK("fetch start too low\n");
2800 * smallest window start value where smooth scrolling is possible
2803 fstrt = downx(fconst, par->diwstrt_h-fconst+(1<<clk_shift)-4) - fsize;
2804 if (fstrt < min_fstrt)
2805 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2807 maxfetchstop = down16(par->htotal - 80);
2809 fstrt = downx(fconst, par->diwstrt_h-4) - 64 - fconst;
2810 fsize = upx(fconst, xres_n + modx(fconst, downx(1<<clk_shift, par->diwstrt_h-4)));
2811 if (fstrt + fsize > maxfetchstop)
2812 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2814 fsize = upx(fconst, xres_n);
2815 if (fstrt + fsize > maxfetchstop) {
2816 DPRINTK("fetch stop too high\n");
2820 if (maxfmode + clk_shift <= 1) {
2821 fsize = up64(xres_n + fconst - 1);
2822 if (min_fstrt + fsize - 64 > maxfetchstop)
2823 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2825 fsize = up64(xres_n);
2826 if (min_fstrt + fsize - 64 > maxfetchstop) {
2827 DPRINTK("fetch size too high\n");
2836 * Check if there is enough time to update the bitplane pointers for ywrap
2839 if (par->htotal-fsize-64 < par->bpp*64)
2840 par->vmode &= ~FB_VMODE_YWRAP;
2843 * Bitplane calculations and check the Memory Requirements
2847 par->next_plane = div8(upx(16<<maxfmode, par->vxres));
2848 par->next_line = par->bpp*par->next_plane;
2849 if (par->next_line * par->vyres > fb_info.fix.smem_len) {
2850 DPRINTK("too few video mem\n");
2854 par->next_line = div8(upx(16<<maxfmode, par->vxres));
2855 par->next_plane = par->vyres*par->next_line;
2856 if (par->next_plane * par->bpp > fb_info.fix.smem_len) {
2857 DPRINTK("too few video mem\n");
2863 * Hardware Register Values
2866 par->bplcon0 = BPC0_COLOR | bplpixmode[clk_shift];
2868 par->bplcon0 |= BPC0_ECSENA;
2870 par->bplcon0 |= BPC0_BPU3;
2872 par->bplcon0 |= par->bpp<<12;
2873 if (var->nonstd == FB_NONSTD_HAM)
2874 par->bplcon0 |= BPC0_HAM;
2875 if (var->sync & FB_SYNC_EXT)
2876 par->bplcon0 |= BPC0_ERSY;
2879 par->fmode = bplfetchmode[maxfmode];
2881 switch (par->vmode & FB_VMODE_MASK) {
2882 case FB_VMODE_INTERLACED:
2883 par->bplcon0 |= BPC0_LACE;
2885 case FB_VMODE_DOUBLE:
2887 par->fmode |= FMODE_SSCAN2 | FMODE_BSCAN2;
2891 if (!((par->vmode ^ var->vmode) & FB_VMODE_YWRAP)) {
2892 par->xoffset = var->xoffset;
2893 par->yoffset = var->yoffset;
2894 if (par->vmode & FB_VMODE_YWRAP) {
2895 if (par->xoffset || par->yoffset < 0 || par->yoffset >= par->vyres)
2896 par->xoffset = par->yoffset = 0;
2898 if (par->xoffset < 0 || par->xoffset > upx(16<<maxfmode, par->vxres-par->xres) ||
2899 par->yoffset < 0 || par->yoffset > par->vyres-par->yres)
2900 par->xoffset = par->yoffset = 0;
2903 par->xoffset = par->yoffset = 0;
2905 par->crsr.crsr_x = par->crsr.crsr_y = 0;
2906 par->crsr.spot_x = par->crsr.spot_y = 0;
2907 par->crsr.height = par->crsr.width = 0;
2913 * Fill the `var' structure based on the values in `par' and maybe
2914 * other values read out of the hardware.
2917 static int ami_encode_var(struct fb_var_screeninfo *var,
2918 struct amifb_par *par)
2920 u_short clk_shift, line_shift;
2922 memset(var, 0, sizeof(struct fb_var_screeninfo));
2924 clk_shift = par->clk_shift;
2925 line_shift = par->line_shift;
2927 var->xres = par->xres;
2928 var->yres = par->yres;
2929 var->xres_virtual = par->vxres;
2930 var->yres_virtual = par->vyres;
2931 var->xoffset = par->xoffset;
2932 var->yoffset = par->yoffset;
2934 var->bits_per_pixel = par->bpp;
2937 var->red.offset = 0;
2938 var->red.msb_right = 0;
2939 var->red.length = par->bpp;
2940 if (par->bplcon0 & BPC0_HAM)
2941 var->red.length -= 2;
2942 var->blue = var->green = var->red;
2943 var->transp.offset = 0;
2944 var->transp.length = 0;
2945 var->transp.msb_right = 0;
2947 if (par->bplcon0 & BPC0_HAM)
2948 var->nonstd = FB_NONSTD_HAM;
2956 var->pixclock = pixclock[clk_shift];
2958 if (IS_AGA && par->fmode & FMODE_BSCAN2)
2959 var->vmode = FB_VMODE_DOUBLE;
2960 else if (par->bplcon0 & BPC0_LACE)
2961 var->vmode = FB_VMODE_INTERLACED;
2963 var->vmode = FB_VMODE_NONINTERLACED;
2965 if (!IS_OCS && par->beamcon0 & BMC0_VARBEAMEN) {
2966 var->hsync_len = (par->hsstop-par->hsstrt)>>clk_shift;
2967 var->right_margin = par->hsstrt>>clk_shift;
2968 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2969 var->vsync_len = (par->vsstop-par->vsstrt)>>line_shift;
2970 var->lower_margin = par->vsstrt>>line_shift;
2971 var->upper_margin = (par->vtotal>>line_shift) - var->yres - var->lower_margin - var->vsync_len;
2973 if (par->beamcon0 & BMC0_HSYTRUE)
2974 var->sync |= FB_SYNC_HOR_HIGH_ACT;
2975 if (par->beamcon0 & BMC0_VSYTRUE)
2976 var->sync |= FB_SYNC_VERT_HIGH_ACT;
2977 if (par->beamcon0 & BMC0_CSYTRUE)
2978 var->sync |= FB_SYNC_COMP_HIGH_ACT;
2980 var->sync = FB_SYNC_BROADCAST;
2981 var->hsync_len = (152>>clk_shift) + mod4(par->diwstop_h);
2982 var->right_margin = ((par->htotal - down4(par->diwstop_h))>>clk_shift) + var->hsync_len;
2983 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2984 var->vsync_len = 4>>line_shift;
2985 var->lower_margin = ((par->vtotal - par->diwstop_v)>>line_shift) + var->vsync_len;
2986 var->upper_margin = (((par->vtotal - 2)>>line_shift) + 1) - var->yres -
2987 var->lower_margin - var->vsync_len;
2990 if (par->bplcon0 & BPC0_ERSY)
2991 var->sync |= FB_SYNC_EXT;
2992 if (par->vmode & FB_VMODE_YWRAP)
2993 var->vmode |= FB_VMODE_YWRAP;
3000 * Pan or Wrap the Display
3002 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
3006 static void ami_pan_var(struct fb_var_screeninfo *var)
3008 struct amifb_par *par = ¤tpar;
3010 par->xoffset = var->xoffset;
3011 par->yoffset = var->yoffset;
3012 if (var->vmode & FB_VMODE_YWRAP)
3013 par->vmode |= FB_VMODE_YWRAP;
3015 par->vmode &= ~FB_VMODE_YWRAP;
3026 static int ami_update_par(void)
3028 struct amifb_par *par = ¤tpar;
3029 short clk_shift, vshift, fstrt, fsize, fstop, fconst, shift, move, mod;
3031 clk_shift = par->clk_shift;
3033 if (!(par->vmode & FB_VMODE_SMOOTH_XPAN))
3034 par->xoffset = upx(16<<maxfmode, par->xoffset);
3036 fconst = 16<<maxfmode<<clk_shift;
3037 vshift = modx(16<<maxfmode, par->xoffset);
3038 fstrt = par->diwstrt_h - (vshift<<clk_shift) - 4;
3039 fsize = (par->xres+vshift)<<clk_shift;
3040 shift = modx(fconst, fstrt);
3041 move = downx(2<<maxfmode, div8(par->xoffset));
3042 if (maxfmode + clk_shift > 1) {
3043 fstrt = downx(fconst, fstrt) - 64;
3044 fsize = upx(fconst, fsize);
3045 fstop = fstrt + fsize - fconst;
3047 mod = fstrt = downx(fconst, fstrt) - fconst;
3048 fstop = fstrt + upx(fconst, fsize) - 64;
3049 fsize = up64(fsize);
3050 fstrt = fstop - fsize + 64;
3051 if (fstrt < min_fstrt) {
3052 fstop += min_fstrt - fstrt;
3055 move = move - div8((mod-fstrt)>>clk_shift);
3057 mod = par->next_line - div8(fsize>>clk_shift);
3058 par->ddfstrt = fstrt;
3059 par->ddfstop = fstop;
3060 par->bplcon1 = hscroll2hw(shift);
3062 if (par->bplcon0 & BPC0_LACE)
3063 par->bpl2mod += par->next_line;
3064 if (IS_AGA && (par->fmode & FMODE_BSCAN2))
3065 par->bpl1mod = -div8(fsize>>clk_shift);
3067 par->bpl1mod = par->bpl2mod;
3070 par->bplpt0 = fb_info.fix.smem_start + par->next_line*par->yoffset + move;
3071 if (par->vmode & FB_VMODE_YWRAP) {
3072 if (par->yoffset > par->vyres-par->yres) {
3073 par->bplpt0wrap = fb_info.fix.smem_start + move;
3074 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v+par->vyres-par->yoffset))
3075 par->bplpt0wrap += par->next_line;
3079 par->bplpt0 = fb_info.fix.smem_start + move;
3081 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v))
3082 par->bplpt0 += par->next_line;
3089 * Set a single color register. The values supplied are already
3090 * rounded down to the hardware's capabilities (according to the
3091 * entries in the var structure). Return != 0 for invalid regno.
3094 static int amifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
3095 u_int transp, struct fb_info *info)
3100 } else if (currentpar.bplcon0 & BPC0_SHRES) {
3117 * Update the corresponding Hardware Color Register, unless it's Color
3118 * Register 0 and the screen is blanked.
3120 * VBlank is switched off to protect bplcon3 or ecs_palette[] from
3121 * being changed by ami_do_blank() during the VBlank.
3124 if (regno || !is_blanked) {
3125 #if defined(CONFIG_FB_AMIGA_AGA)
3127 u_short bplcon3 = currentpar.bplcon3;
3129 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000);
3130 custom.color[regno&31] = rgb2hw8_high(red, green, blue);
3131 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000) | BPC3_LOCT;
3132 custom.color[regno&31] = rgb2hw8_low(red, green, blue);
3133 custom.bplcon3 = bplcon3;
3137 #if defined(CONFIG_FB_AMIGA_ECS)
3138 if (currentpar.bplcon0 & BPC0_SHRES) {
3139 u_short color, mask;
3143 color = rgb2hw2(red, green, blue);
3145 for (i = regno+12; i >= (int)regno; i -= 4)
3146 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3147 mask <<=2; color >>= 2;
3148 regno = down16(regno)+mul4(mod4(regno));
3149 for (i = regno+3; i >= (int)regno; i--)
3150 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3154 custom.color[regno] = rgb2hw4(red, green, blue);
3159 static void ami_update_display(void)
3161 struct amifb_par *par = ¤tpar;
3163 custom.bplcon1 = par->bplcon1;
3164 custom.bpl1mod = par->bpl1mod;
3165 custom.bpl2mod = par->bpl2mod;
3166 custom.ddfstrt = ddfstrt2hw(par->ddfstrt);
3167 custom.ddfstop = ddfstop2hw(par->ddfstop);
3171 * Change the video mode (called by VBlank interrupt)
3174 static void ami_init_display(void)
3176 struct amifb_par *par = ¤tpar;
3179 custom.bplcon0 = par->bplcon0 & ~BPC0_LACE;
3180 custom.bplcon2 = (IS_OCS ? 0 : BPC2_KILLEHB) | BPC2_PF2P2 | BPC2_PF1P2;
3182 custom.bplcon3 = par->bplcon3;
3184 custom.bplcon4 = BPC4_ESPRM4 | BPC4_OSPRM4;
3185 if (par->beamcon0 & BMC0_VARBEAMEN) {
3186 custom.htotal = htotal2hw(par->htotal);
3187 custom.hbstrt = hbstrt2hw(par->hbstrt);
3188 custom.hbstop = hbstop2hw(par->hbstop);
3189 custom.hsstrt = hsstrt2hw(par->hsstrt);
3190 custom.hsstop = hsstop2hw(par->hsstop);
3191 custom.hcenter = hcenter2hw(par->hcenter);
3192 custom.vtotal = vtotal2hw(par->vtotal);
3193 custom.vbstrt = vbstrt2hw(par->vbstrt);
3194 custom.vbstop = vbstop2hw(par->vbstop);
3195 custom.vsstrt = vsstrt2hw(par->vsstrt);
3196 custom.vsstop = vsstop2hw(par->vsstop);
3199 if (!IS_OCS || par->hsstop)
3200 custom.beamcon0 = par->beamcon0;
3202 custom.fmode = par->fmode;
3205 * The minimum period for audio depends on htotal
3208 amiga_audio_min_period = div16(par->htotal);
3210 is_lace = par->bplcon0 & BPC0_LACE ? 1 : 0;
3213 i = custom.vposr >> 15;
3215 custom.vposw = custom.vposr | 0x8000;
3220 custom.vposw = custom.vposr | 0x8000;
3222 custom.cop2lc = (u_short *)ZTWO_PADDR(copdisplay.list[currentcop][i]);
3226 * (Un)Blank the screen (called by VBlank interrupt)
3229 static void ami_do_blank(void)
3231 struct amifb_par *par = ¤tpar;
3232 #if defined(CONFIG_FB_AMIGA_AGA)
3233 u_short bplcon3 = par->bplcon3;
3235 u_char red, green, blue;
3238 custom.dmacon = DMAF_RASTER | DMAF_SPRITE;
3239 red = green = blue = 0;
3240 if (!IS_OCS && do_blank > 1) {
3242 case FB_BLANK_VSYNC_SUSPEND:
3243 custom.hsstrt = hsstrt2hw(par->hsstrt);
3244 custom.hsstop = hsstop2hw(par->hsstop);
3245 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3246 custom.vsstop = vsstop2hw(par->vtotal+4);
3248 case FB_BLANK_HSYNC_SUSPEND:
3249 custom.hsstrt = hsstrt2hw(par->htotal+16);
3250 custom.hsstop = hsstop2hw(par->htotal+16);
3251 custom.vsstrt = vsstrt2hw(par->vsstrt);
3252 custom.vsstop = vsstrt2hw(par->vsstop);
3254 case FB_BLANK_POWERDOWN:
3255 custom.hsstrt = hsstrt2hw(par->htotal+16);
3256 custom.hsstop = hsstop2hw(par->htotal+16);
3257 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3258 custom.vsstop = vsstop2hw(par->vtotal+4);
3261 if (!(par->beamcon0 & BMC0_VARBEAMEN)) {
3262 custom.htotal = htotal2hw(par->htotal);
3263 custom.vtotal = vtotal2hw(par->vtotal);
3264 custom.beamcon0 = BMC0_HARDDIS | BMC0_VARBEAMEN |
3265 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARCSYEN;
3269 custom.dmacon = DMAF_SETCLR | DMAF_RASTER | DMAF_SPRITE;
3274 custom.hsstrt = hsstrt2hw(par->hsstrt);
3275 custom.hsstop = hsstop2hw(par->hsstop);
3276 custom.vsstrt = vsstrt2hw(par->vsstrt);
3277 custom.vsstop = vsstop2hw(par->vsstop);
3278 custom.beamcon0 = par->beamcon0;
3281 #if defined(CONFIG_FB_AMIGA_AGA)
3283 custom.bplcon3 = bplcon3;
3284 custom.color[0] = rgb2hw8_high(red, green, blue);
3285 custom.bplcon3 = bplcon3 | BPC3_LOCT;
3286 custom.color[0] = rgb2hw8_low(red, green, blue);
3287 custom.bplcon3 = bplcon3;
3290 #if defined(CONFIG_FB_AMIGA_ECS)
3291 if (par->bplcon0 & BPC0_SHRES) {
3292 u_short color, mask;
3296 color = rgb2hw2(red, green, blue);
3297 for (i = 12; i >= 0; i -= 4)
3298 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3299 mask <<=2; color >>= 2;
3300 for (i = 3; i >= 0; i--)
3301 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3304 custom.color[0] = rgb2hw4(red, green, blue);
3305 is_blanked = do_blank > 0 ? do_blank : 0;
3308 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix)
3310 struct amifb_par *par = ¤tpar;
3312 fix->crsr_width = fix->crsr_xsize = par->crsr.width;
3313 fix->crsr_height = fix->crsr_ysize = par->crsr.height;
3314 fix->crsr_color1 = 17;
3315 fix->crsr_color2 = 18;
3319 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
3321 struct amifb_par *par = ¤tpar;
3322 register u_short *lspr, *sspr;
3324 register u_long datawords asm ("d2");
3326 register u_long datawords;
3328 register short delta;
3329 register u_char color;
3330 short height, width, bits, words;
3333 size = par->crsr.height*par->crsr.width;
3334 alloc = var->height*var->width;
3335 var->height = par->crsr.height;
3336 var->width = par->crsr.width;
3337 var->xspot = par->crsr.spot_x;
3338 var->yspot = par->crsr.spot_y;
3339 if (size > var->height*var->width)
3340 return -ENAMETOOLONG;
3341 if (!access_ok(VERIFY_WRITE, data, size))
3343 delta = 1<<par->crsr.fmode;
3344 lspr = lofsprite + (delta<<1);
3345 if (par->bplcon0 & BPC0_LACE)
3346 sspr = shfsprite + (delta<<1);
3349 for (height = (short)var->height-1; height >= 0; height--) {
3350 bits = 0; words = delta; datawords = 0;
3351 for (width = (short)var->width-1; width >= 0; width--) {
3355 asm volatile ("movew %1@(%3:w:2),%0 ; swap %0 ; movew %1@+,%0"
3356 : "=d" (datawords), "=a" (lspr) : "1" (lspr), "d" (delta));
3358 datawords = (*(lspr+delta) << 16) | (*lspr++);
3364 "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; "
3365 "swap %1 ; lslw #1,%1 ; roxlb #1,%0"
3366 : "=d" (color), "=d" (datawords) : "1" (datawords));
3368 color = (((datawords >> 30) & 2)
3369 | ((datawords >> 15) & 1));
3372 put_user(color, data++);
3377 while (--words >= 0)
3380 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3381 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3385 u_short *tmp = lspr;
3394 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
3396 struct amifb_par *par = ¤tpar;
3397 register u_short *lspr, *sspr;
3399 register u_long datawords asm ("d2");
3401 register u_long datawords;
3403 register short delta;
3405 short height, width, bits, words;
3409 else if (var->width <= 16)
3410 fmode = TAG_FMODE_1;
3411 else if (var->width <= 32)
3412 fmode = TAG_FMODE_2;
3413 else if (var->width <= 64)
3414 fmode = TAG_FMODE_4;
3417 if (fmode > maxfmode)
3421 if (!access_ok(VERIFY_READ, data, var->width*var->height))
3424 lofsprite = shfsprite = (u_short *)spritememory;
3425 lspr = lofsprite + (delta<<1);
3426 if (par->bplcon0 & BPC0_LACE) {
3427 if (((var->height+4)<<fmode<<2) > SPRITEMEMSIZE)
3429 memset(lspr, 0, (var->height+4)<<fmode<<2);
3430 shfsprite += ((var->height+5)&-2)<<fmode;
3431 sspr = shfsprite + (delta<<1);
3433 if (((var->height+2)<<fmode<<2) > SPRITEMEMSIZE)
3435 memset(lspr, 0, (var->height+2)<<fmode<<2);
3438 for (height = (short)var->height-1; height >= 0; height--) {
3439 bits = 16; words = delta; datawords = 0;
3440 for (width = (short)var->width-1; width >= 0; width--) {
3441 unsigned long tdata = 0;
3442 get_user(tdata, data);
3446 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0 ; "
3447 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0"
3449 : "0" (datawords), "d" (tdata));
3451 datawords = ((datawords << 1) & 0xfffefffe);
3452 datawords |= tdata & 1;
3453 datawords |= (tdata & 2) << (16-1);
3458 asm volatile ("swap %2 ; movew %2,%0@(%3:w:2) ; swap %2 ; movew %2,%0@+"
3459 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta));
3461 *(lspr+delta) = (u_short) (datawords >> 16);
3462 *lspr++ = (u_short) (datawords & 0xffff);
3470 "swap %2 ; lslw %4,%2 ; movew %2,%0@(%3:w:2) ; "
3471 "swap %2 ; lslw %4,%2 ; movew %2,%0@+"
3472 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta), "d" (bits));
3474 *(lspr+delta) = (u_short) (datawords >> (16+bits));
3475 *lspr++ = (u_short) ((datawords & 0x0000ffff) >> bits);
3478 while (--words >= 0) {
3480 asm volatile ("moveql #0,%%d0 ; movew %%d0,%0@(%2:w:2) ; movew %%d0,%0@+"
3481 : "=a" (lspr) : "0" (lspr), "d" (delta) : "d0");
3488 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3489 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3493 u_short *tmp = lspr;
3499 par->crsr.height = var->height;
3500 par->crsr.width = var->width;
3501 par->crsr.spot_x = var->xspot;
3502 par->crsr.spot_y = var->yspot;
3503 par->crsr.fmode = fmode;
3505 par->fmode &= ~(FMODE_SPAGEM | FMODE_SPR32);
3506 par->fmode |= sprfetchmode[fmode];
3507 custom.fmode = par->fmode;
3512 static int ami_get_cursorstate(struct fb_cursorstate *state)
3514 struct amifb_par *par = ¤tpar;
3516 state->xoffset = par->crsr.crsr_x;
3517 state->yoffset = par->crsr.crsr_y;
3518 state->mode = cursormode;
3522 static int ami_set_cursorstate(struct fb_cursorstate *state)
3524 struct amifb_par *par = ¤tpar;
3526 par->crsr.crsr_x = state->xoffset;
3527 par->crsr.crsr_y = state->yoffset;
3528 if ((cursormode = state->mode) == FB_CURSOR_OFF)
3534 static void ami_set_sprite(void)
3536 struct amifb_par *par = ¤tpar;
3537 copins *copl, *cops;
3542 cops = copdisplay.list[currentcop][0];
3543 copl = copdisplay.list[currentcop][1];
3544 ps = pl = ZTWO_PADDR(dummysprite);
3545 mx = par->crsr.crsr_x-par->crsr.spot_x;
3546 my = par->crsr.crsr_y-par->crsr.spot_y;
3547 if (!(par->vmode & FB_VMODE_YWRAP)) {
3551 if (!is_blanked && cursorstate > 0 && par->crsr.height > 0 &&
3552 mx > -(short)par->crsr.width && mx < par->xres &&
3553 my > -(short)par->crsr.height && my < par->yres) {
3554 pl = ZTWO_PADDR(lofsprite);
3555 hs = par->diwstrt_h + (mx<<par->clk_shift) - 4;
3556 vs = par->diwstrt_v + (my<<par->line_shift);
3557 ve = vs + (par->crsr.height<<par->line_shift);
3558 if (par->bplcon0 & BPC0_LACE) {
3559 ps = ZTWO_PADDR(shfsprite);
3560 lofsprite[0] = spr2hw_pos(vs, hs);
3561 shfsprite[0] = spr2hw_pos(vs+1, hs);
3563 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3564 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve+1);
3565 pt = pl; pl = ps; ps = pt;
3567 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve+1);
3568 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve);
3571 lofsprite[0] = spr2hw_pos(vs, hs) | (IS_AGA && (par->fmode & FMODE_BSCAN2) ? 0x80 : 0);
3572 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3575 copl[cop_spr0ptrh].w[1] = highw(pl);
3576 copl[cop_spr0ptrl].w[1] = loww(pl);
3577 if (par->bplcon0 & BPC0_LACE) {
3578 cops[cop_spr0ptrh].w[1] = highw(ps);
3579 cops[cop_spr0ptrl].w[1] = loww(ps);
3585 * Initialise the Copper Initialisation List
3588 static void __init ami_init_copper(void)
3590 copins *cop = copdisplay.init;
3595 (cop++)->l = CMOVE(BPC0_COLOR | BPC0_SHRES | BPC0_ECSENA, bplcon0);
3596 (cop++)->l = CMOVE(0x0181, diwstrt);
3597 (cop++)->l = CMOVE(0x0281, diwstop);
3598 (cop++)->l = CMOVE(0x0000, diwhigh);
3600 (cop++)->l = CMOVE(BPC0_COLOR, bplcon0);
3601 p = ZTWO_PADDR(dummysprite);
3602 for (i = 0; i < 8; i++) {
3603 (cop++)->l = CMOVE(0, spr[i].pos);
3604 (cop++)->l = CMOVE(highw(p), sprpt[i]);
3605 (cop++)->l = CMOVE2(loww(p), sprpt[i]);
3608 (cop++)->l = CMOVE(IF_SETCLR | IF_COPER, intreq);
3609 copdisplay.wait = cop;
3611 (cop++)->l = CMOVE(0, copjmp2);
3614 custom.cop1lc = (u_short *)ZTWO_PADDR(copdisplay.init);
3618 static void ami_reinit_copper(void)
3620 struct amifb_par *par = ¤tpar;
3622 copdisplay.init[cip_bplcon0].w[1] = ~(BPC0_BPU3 | BPC0_BPU2 | BPC0_BPU1 | BPC0_BPU0) & par->bplcon0;
3623 copdisplay.wait->l = CWAIT(32, par->diwstrt_v-4);
3627 * Build the Copper List
3630 static void ami_build_copper(void)
3632 struct amifb_par *par = ¤tpar;
3633 copins *copl, *cops;
3636 currentcop = 1 - currentcop;
3638 copl = copdisplay.list[currentcop][1];
3640 (copl++)->l = CWAIT(0, 10);
3641 (copl++)->l = CMOVE(par->bplcon0, bplcon0);
3642 (copl++)->l = CMOVE(0, sprpt[0]);
3643 (copl++)->l = CMOVE2(0, sprpt[0]);
3645 if (par->bplcon0 & BPC0_LACE) {
3646 cops = copdisplay.list[currentcop][0];
3648 (cops++)->l = CWAIT(0, 10);
3649 (cops++)->l = CMOVE(par->bplcon0, bplcon0);
3650 (cops++)->l = CMOVE(0, sprpt[0]);
3651 (cops++)->l = CMOVE2(0, sprpt[0]);
3653 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v+1), diwstrt);
3654 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v+1), diwstop);
3655 (cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3656 (cops++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3658 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v+1,
3659 par->diwstop_h, par->diwstop_v+1), diwhigh);
3660 (cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3661 par->diwstop_h, par->diwstop_v), diwhigh);
3663 if (par->beamcon0 & BMC0_VARBEAMEN) {
3664 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3665 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt+1), vbstrt);
3666 (copl++)->l = CMOVE(vbstop2hw(par->vbstop+1), vbstop);
3667 (cops++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3668 (cops++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3669 (cops++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3673 p = ZTWO_PADDR(copdisplay.list[currentcop][0]);
3674 (copl++)->l = CMOVE(highw(p), cop2lc);
3675 (copl++)->l = CMOVE2(loww(p), cop2lc);
3676 p = ZTWO_PADDR(copdisplay.list[currentcop][1]);
3677 (cops++)->l = CMOVE(highw(p), cop2lc);
3678 (cops++)->l = CMOVE2(loww(p), cop2lc);
3679 copdisplay.rebuild[0] = cops;
3681 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3682 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3684 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3685 par->diwstop_h, par->diwstop_v), diwhigh);
3687 if (par->beamcon0 & BMC0_VARBEAMEN) {
3688 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3689 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3690 (copl++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3695 copdisplay.rebuild[1] = copl;
3698 ami_rebuild_copper();
3702 * Rebuild the Copper List
3704 * We only change the things that are not static
3707 static void ami_rebuild_copper(void)
3709 struct amifb_par *par = ¤tpar;
3710 copins *copl, *cops;
3711 u_short line, h_end1, h_end2;
3715 if (IS_AGA && maxfmode + par->clk_shift == 0)
3716 h_end1 = par->diwstrt_h-64;
3718 h_end1 = par->htotal-32;
3719 h_end2 = par->ddfstop+64;
3723 copl = copdisplay.rebuild[1];
3725 if (par->vmode & FB_VMODE_YWRAP) {
3726 if ((par->vyres-par->yoffset) != 1 || !mod2(par->diwstrt_v)) {
3727 if (par->yoffset > par->vyres-par->yres) {
3728 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3729 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3730 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3732 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 1;
3733 while (line >= 512) {
3734 (copl++)->l = CWAIT(h_end1, 510);
3737 if (line >= 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3738 (copl++)->l = CWAIT(h_end1, line);
3740 (copl++)->l = CWAIT(h_end2, line);
3741 p = par->bplpt0wrap;
3743 } else p = par->bplpt0wrap;
3745 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3746 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3747 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3751 if (par->bplcon0 & BPC0_LACE) {
3752 cops = copdisplay.rebuild[0];
3754 if (mod2(par->diwstrt_v))
3755 p -= par->next_line;
3757 p += par->next_line;
3758 if (par->vmode & FB_VMODE_YWRAP) {
3759 if ((par->vyres-par->yoffset) != 1 || mod2(par->diwstrt_v)) {
3760 if (par->yoffset > par->vyres-par->yres+1) {
3761 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3762 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3763 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3765 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 2;
3766 while (line >= 512) {
3767 (cops++)->l = CWAIT(h_end1, 510);
3770 if (line > 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3771 (cops++)->l = CWAIT(h_end1, line);
3773 (cops++)->l = CWAIT(h_end2, line);
3774 p = par->bplpt0wrap;
3775 if (mod2(par->diwstrt_v+par->vyres-par->yoffset))
3776 p -= par->next_line;
3778 p += par->next_line;
3780 } else p = par->bplpt0wrap - par->next_line;
3782 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3783 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3784 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3791 module_init(amifb_init);
3794 MODULE_LICENSE("GPL");
3796 void cleanup_module(void)
3798 unregister_framebuffer(&fb_info);