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, __func__ , ## 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 static void amifb_deinit(void);
1145 static int flash_cursor(void);
1146 static irqreturn_t amifb_interrupt(int irq, void *dev_id);
1147 static u_long chipalloc(u_long size);
1148 static void chipfree(void);
1154 static int ami_decode_var(struct fb_var_screeninfo *var,
1155 struct amifb_par *par);
1156 static int ami_encode_var(struct fb_var_screeninfo *var,
1157 struct amifb_par *par);
1158 static void ami_pan_var(struct fb_var_screeninfo *var);
1159 static int ami_update_par(void);
1160 static void ami_update_display(void);
1161 static void ami_init_display(void);
1162 static void ami_do_blank(void);
1163 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix);
1164 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data);
1165 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data);
1166 static int ami_get_cursorstate(struct fb_cursorstate *state);
1167 static int ami_set_cursorstate(struct fb_cursorstate *state);
1168 static void ami_set_sprite(void);
1169 static void ami_init_copper(void);
1170 static void ami_reinit_copper(void);
1171 static void ami_build_copper(void);
1172 static void ami_rebuild_copper(void);
1175 static struct fb_ops amifb_ops = {
1176 .owner = THIS_MODULE,
1177 .fb_check_var = amifb_check_var,
1178 .fb_set_par = amifb_set_par,
1179 .fb_setcolreg = amifb_setcolreg,
1180 .fb_blank = amifb_blank,
1181 .fb_pan_display = amifb_pan_display,
1182 .fb_fillrect = amifb_fillrect,
1183 .fb_copyarea = amifb_copyarea,
1184 .fb_imageblit = amifb_imageblit,
1185 .fb_ioctl = amifb_ioctl,
1188 static void __init amifb_setup_mcap(char *spec)
1191 int vmin, vmax, hmin, hmax;
1193 /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax>
1194 * <V*> vertical freq. in Hz
1195 * <H*> horizontal freq. in kHz
1198 if (!(p = strsep(&spec, ";")) || !*p)
1200 vmin = simple_strtoul(p, NULL, 10);
1203 if (!(p = strsep(&spec, ";")) || !*p)
1205 vmax = simple_strtoul(p, NULL, 10);
1206 if (vmax <= 0 || vmax <= vmin)
1208 if (!(p = strsep(&spec, ";")) || !*p)
1210 hmin = 1000 * simple_strtoul(p, NULL, 10);
1213 if (!(p = strsep(&spec, "")) || !*p)
1215 hmax = 1000 * simple_strtoul(p, NULL, 10);
1216 if (hmax <= 0 || hmax <= hmin)
1219 fb_info.monspecs.vfmin = vmin;
1220 fb_info.monspecs.vfmax = vmax;
1221 fb_info.monspecs.hfmin = hmin;
1222 fb_info.monspecs.hfmax = hmax;
1225 int __init amifb_setup(char *options)
1229 if (!options || !*options)
1232 while ((this_opt = strsep(&options, ",")) != NULL) {
1235 if (!strcmp(this_opt, "inverse")) {
1238 } else if (!strcmp(this_opt, "ilbm"))
1240 else if (!strncmp(this_opt, "monitorcap:", 11))
1241 amifb_setup_mcap(this_opt+11);
1242 else if (!strncmp(this_opt, "fstart:", 7))
1243 min_fstrt = simple_strtoul(this_opt+7, NULL, 0);
1245 mode_option = this_opt;
1255 static int amifb_check_var(struct fb_var_screeninfo *var,
1256 struct fb_info *info)
1259 struct amifb_par par;
1261 /* Validate wanted screen parameters */
1262 if ((err = ami_decode_var(var, &par)))
1265 /* Encode (possibly rounded) screen parameters */
1266 ami_encode_var(var, &par);
1271 static int amifb_set_par(struct fb_info *info)
1273 struct amifb_par *par = (struct amifb_par *)info->par;
1278 /* Decode wanted screen parameters */
1279 ami_decode_var(&info->var, par);
1281 /* Set new videomode */
1284 /* Set VBlank trigger */
1287 /* Update fix for new screen parameters */
1288 if (par->bpp == 1) {
1289 info->fix.type = FB_TYPE_PACKED_PIXELS;
1290 info->fix.type_aux = 0;
1291 } else if (amifb_ilbm) {
1292 info->fix.type = FB_TYPE_INTERLEAVED_PLANES;
1293 info->fix.type_aux = par->next_line;
1295 info->fix.type = FB_TYPE_PLANES;
1296 info->fix.type_aux = 0;
1298 info->fix.line_length = div8(upx(16<<maxfmode, par->vxres));
1300 if (par->vmode & FB_VMODE_YWRAP) {
1301 info->fix.ywrapstep = 1;
1302 info->fix.xpanstep = 0;
1303 info->fix.ypanstep = 0;
1304 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YWRAP |
1305 FBINFO_READS_FAST; /* override SCROLL_REDRAW */
1307 info->fix.ywrapstep = 0;
1308 if (par->vmode & FB_VMODE_SMOOTH_XPAN)
1309 info->fix.xpanstep = 1;
1311 info->fix.xpanstep = 16<<maxfmode;
1312 info->fix.ypanstep = 1;
1313 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1320 * Pan or Wrap the Display
1322 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1325 static int amifb_pan_display(struct fb_var_screeninfo *var,
1326 struct fb_info *info)
1328 if (var->vmode & FB_VMODE_YWRAP) {
1329 if (var->yoffset < 0 ||
1330 var->yoffset >= info->var.yres_virtual || var->xoffset)
1334 * TODO: There will be problems when xpan!=1, so some columns
1335 * on the right side will never be seen
1337 if (var->xoffset+info->var.xres > upx(16<<maxfmode, info->var.xres_virtual) ||
1338 var->yoffset+info->var.yres > info->var.yres_virtual)
1342 info->var.xoffset = var->xoffset;
1343 info->var.yoffset = var->yoffset;
1344 if (var->vmode & FB_VMODE_YWRAP)
1345 info->var.vmode |= FB_VMODE_YWRAP;
1347 info->var.vmode &= ~FB_VMODE_YWRAP;
1352 #if BITS_PER_LONG == 32
1353 #define BYTES_PER_LONG 4
1354 #define SHIFT_PER_LONG 5
1355 #elif BITS_PER_LONG == 64
1356 #define BYTES_PER_LONG 8
1357 #define SHIFT_PER_LONG 6
1359 #define Please update me
1364 * Compose two values, using a bitmask as decision value
1365 * This is equivalent to (a & mask) | (b & ~mask)
1368 static inline unsigned long comp(unsigned long a, unsigned long b,
1371 return ((a ^ b) & mask) ^ b;
1375 static inline unsigned long xor(unsigned long a, unsigned long b,
1378 return (a & mask) ^ b;
1383 * Unaligned forward bit copy using 32-bit or 64-bit memory accesses
1386 static void bitcpy(unsigned long *dst, int dst_idx, const unsigned long *src,
1389 unsigned long first, last;
1390 int shift = dst_idx-src_idx, left, right;
1391 unsigned long d0, d1;
1397 shift = dst_idx-src_idx;
1398 first = ~0UL >> dst_idx;
1399 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1402 // Same alignment for source and dest
1404 if (dst_idx+n <= BITS_PER_LONG) {
1408 *dst = comp(*src, *dst, first);
1410 // Multiple destination words
1413 *dst = comp(*src, *dst, first);
1416 n -= BITS_PER_LONG-dst_idx;
1437 *dst = comp(*src, *dst, last);
1440 // Different alignment for source and dest
1442 right = shift & (BITS_PER_LONG-1);
1443 left = -shift & (BITS_PER_LONG-1);
1445 if (dst_idx+n <= BITS_PER_LONG) {
1446 // Single destination word
1450 // Single source word
1451 *dst = comp(*src >> right, *dst, first);
1452 } else if (src_idx+n <= BITS_PER_LONG) {
1453 // Single source word
1454 *dst = comp(*src << left, *dst, first);
1459 *dst = comp(d0 << left | d1 >> right, *dst,
1463 // Multiple destination words
1467 // Single source word
1468 *dst = comp(d0 >> right, *dst, first);
1470 n -= BITS_PER_LONG-dst_idx;
1474 *dst = comp(d0 << left | d1 >> right, *dst,
1478 n -= BITS_PER_LONG-dst_idx;
1482 m = n % BITS_PER_LONG;
1486 *dst++ = d0 << left | d1 >> right;
1489 *dst++ = d0 << left | d1 >> right;
1492 *dst++ = d0 << left | d1 >> right;
1495 *dst++ = d0 << left | d1 >> right;
1501 *dst++ = d0 << left | d1 >> right;
1508 // Single source word
1509 *dst = comp(d0 << left, *dst, last);
1513 *dst = comp(d0 << left | d1 >> right,
1523 * Unaligned reverse bit copy using 32-bit or 64-bit memory accesses
1526 static void bitcpy_rev(unsigned long *dst, int dst_idx,
1527 const unsigned long *src, int src_idx, u32 n)
1529 unsigned long first, last;
1530 int shift = dst_idx-src_idx, left, right;
1531 unsigned long d0, d1;
1537 dst += (n-1)/BITS_PER_LONG;
1538 src += (n-1)/BITS_PER_LONG;
1539 if ((n-1) % BITS_PER_LONG) {
1540 dst_idx += (n-1) % BITS_PER_LONG;
1541 dst += dst_idx >> SHIFT_PER_LONG;
1542 dst_idx &= BITS_PER_LONG-1;
1543 src_idx += (n-1) % BITS_PER_LONG;
1544 src += src_idx >> SHIFT_PER_LONG;
1545 src_idx &= BITS_PER_LONG-1;
1548 shift = dst_idx-src_idx;
1549 first = ~0UL << (BITS_PER_LONG-1-dst_idx);
1550 last = ~(~0UL << (BITS_PER_LONG-1-((dst_idx-n) % BITS_PER_LONG)));
1553 // Same alignment for source and dest
1555 if ((unsigned long)dst_idx+1 >= n) {
1559 *dst = comp(*src, *dst, first);
1561 // Multiple destination words
1564 *dst = comp(*src, *dst, first);
1588 *dst = comp(*src, *dst, last);
1591 // Different alignment for source and dest
1593 right = shift & (BITS_PER_LONG-1);
1594 left = -shift & (BITS_PER_LONG-1);
1596 if ((unsigned long)dst_idx+1 >= n) {
1597 // Single destination word
1601 // Single source word
1602 *dst = comp(*src << left, *dst, first);
1603 } else if (1+(unsigned long)src_idx >= n) {
1604 // Single source word
1605 *dst = comp(*src >> right, *dst, first);
1610 *dst = comp(d0 >> right | d1 << left, *dst,
1614 // Multiple destination words
1618 // Single source word
1619 *dst = comp(d0 << left, *dst, first);
1625 *dst = comp(d0 >> right | d1 << left, *dst,
1633 m = n % BITS_PER_LONG;
1637 *dst-- = d0 >> right | d1 << left;
1640 *dst-- = d0 >> right | d1 << left;
1643 *dst-- = d0 >> right | d1 << left;
1646 *dst-- = d0 >> right | d1 << left;
1652 *dst-- = d0 >> right | d1 << left;
1659 // Single source word
1660 *dst = comp(d0 >> right, *dst, last);
1664 *dst = comp(d0 >> right | d1 << left,
1674 * Unaligned forward inverting bit copy using 32-bit or 64-bit memory
1678 static void bitcpy_not(unsigned long *dst, int dst_idx,
1679 const unsigned long *src, int src_idx, u32 n)
1681 unsigned long first, last;
1682 int shift = dst_idx-src_idx, left, right;
1683 unsigned long d0, d1;
1689 shift = dst_idx-src_idx;
1690 first = ~0UL >> dst_idx;
1691 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1694 // Same alignment for source and dest
1696 if (dst_idx+n <= BITS_PER_LONG) {
1700 *dst = comp(~*src, *dst, first);
1702 // Multiple destination words
1705 *dst = comp(~*src, *dst, first);
1708 n -= BITS_PER_LONG-dst_idx;
1729 *dst = comp(~*src, *dst, last);
1732 // Different alignment for source and dest
1734 right = shift & (BITS_PER_LONG-1);
1735 left = -shift & (BITS_PER_LONG-1);
1737 if (dst_idx+n <= BITS_PER_LONG) {
1738 // Single destination word
1742 // Single source word
1743 *dst = comp(~*src >> right, *dst, first);
1744 } else if (src_idx+n <= BITS_PER_LONG) {
1745 // Single source word
1746 *dst = comp(~*src << left, *dst, first);
1751 *dst = comp(d0 << left | d1 >> right, *dst,
1755 // Multiple destination words
1759 // Single source word
1760 *dst = comp(d0 >> right, *dst, first);
1762 n -= BITS_PER_LONG-dst_idx;
1766 *dst = comp(d0 << left | d1 >> right, *dst,
1770 n -= BITS_PER_LONG-dst_idx;
1774 m = n % BITS_PER_LONG;
1778 *dst++ = d0 << left | d1 >> right;
1781 *dst++ = d0 << left | d1 >> right;
1784 *dst++ = d0 << left | d1 >> right;
1787 *dst++ = d0 << left | d1 >> right;
1793 *dst++ = d0 << left | d1 >> right;
1800 // Single source word
1801 *dst = comp(d0 << left, *dst, last);
1805 *dst = comp(d0 << left | d1 >> right,
1815 * Unaligned 32-bit pattern fill using 32/64-bit memory accesses
1818 static void bitfill32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1820 unsigned long val = pat;
1821 unsigned long first, last;
1826 #if BITS_PER_LONG == 64
1830 first = ~0UL >> dst_idx;
1831 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1833 if (dst_idx+n <= BITS_PER_LONG) {
1837 *dst = comp(val, *dst, first);
1839 // Multiple destination words
1842 *dst = comp(val, *dst, first);
1844 n -= BITS_PER_LONG-dst_idx;
1865 *dst = comp(val, *dst, last);
1871 * Unaligned 32-bit pattern xor using 32/64-bit memory accesses
1874 static void bitxor32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1876 unsigned long val = pat;
1877 unsigned long first, last;
1882 #if BITS_PER_LONG == 64
1886 first = ~0UL >> dst_idx;
1887 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1889 if (dst_idx+n <= BITS_PER_LONG) {
1893 *dst = xor(val, *dst, first);
1895 // Multiple destination words
1898 *dst = xor(val, *dst, first);
1900 n -= BITS_PER_LONG-dst_idx;
1917 *dst = xor(val, *dst, last);
1921 static inline void fill_one_line(int bpp, unsigned long next_plane,
1922 unsigned long *dst, int dst_idx, u32 n,
1926 dst += dst_idx >> SHIFT_PER_LONG;
1927 dst_idx &= (BITS_PER_LONG-1);
1928 bitfill32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1932 dst_idx += next_plane*8;
1936 static inline void xor_one_line(int bpp, unsigned long next_plane,
1937 unsigned long *dst, int dst_idx, u32 n,
1941 dst += dst_idx >> SHIFT_PER_LONG;
1942 dst_idx &= (BITS_PER_LONG-1);
1943 bitxor32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1947 dst_idx += next_plane*8;
1952 static void amifb_fillrect(struct fb_info *info,
1953 const struct fb_fillrect *rect)
1955 struct amifb_par *par = (struct amifb_par *)info->par;
1956 int dst_idx, x2, y2;
1960 if (!rect->width || !rect->height)
1964 * We could use hardware clipping but on many cards you get around
1965 * hardware clipping by writing to framebuffer directly.
1967 x2 = rect->dx + rect->width;
1968 y2 = rect->dy + rect->height;
1969 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
1970 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
1971 width = x2 - rect->dx;
1972 height = y2 - rect->dy;
1974 dst = (unsigned long *)
1975 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
1976 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
1977 dst_idx += rect->dy*par->next_line*8+rect->dx;
1979 switch (rect->rop) {
1981 fill_one_line(info->var.bits_per_pixel,
1982 par->next_plane, dst, dst_idx, width,
1987 xor_one_line(info->var.bits_per_pixel, par->next_plane,
1988 dst, dst_idx, width, rect->color);
1991 dst_idx += par->next_line*8;
1995 static inline void copy_one_line(int bpp, unsigned long next_plane,
1996 unsigned long *dst, int dst_idx,
1997 unsigned long *src, int src_idx, u32 n)
2000 dst += dst_idx >> SHIFT_PER_LONG;
2001 dst_idx &= (BITS_PER_LONG-1);
2002 src += src_idx >> SHIFT_PER_LONG;
2003 src_idx &= (BITS_PER_LONG-1);
2004 bitcpy(dst, dst_idx, src, src_idx, n);
2007 dst_idx += next_plane*8;
2008 src_idx += next_plane*8;
2012 static inline void copy_one_line_rev(int bpp, unsigned long next_plane,
2013 unsigned long *dst, int dst_idx,
2014 unsigned long *src, int src_idx, u32 n)
2017 dst += dst_idx >> SHIFT_PER_LONG;
2018 dst_idx &= (BITS_PER_LONG-1);
2019 src += src_idx >> SHIFT_PER_LONG;
2020 src_idx &= (BITS_PER_LONG-1);
2021 bitcpy_rev(dst, dst_idx, src, src_idx, n);
2024 dst_idx += next_plane*8;
2025 src_idx += next_plane*8;
2030 static void amifb_copyarea(struct fb_info *info,
2031 const struct fb_copyarea *area)
2033 struct amifb_par *par = (struct amifb_par *)info->par;
2035 u32 dx, dy, sx, sy, width, height;
2036 unsigned long *dst, *src;
2037 int dst_idx, src_idx;
2040 /* clip the destination */
2041 x2 = area->dx + area->width;
2042 y2 = area->dy + area->height;
2043 dx = area->dx > 0 ? area->dx : 0;
2044 dy = area->dy > 0 ? area->dy : 0;
2045 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2046 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2050 if (area->sx + dx < area->dx || area->sy + dy < area->dy)
2054 sx = area->sx + (dx - area->dx);
2055 sy = area->sy + (dy - area->dy);
2057 /* the source must be completely inside the virtual screen */
2058 if (sx + width > info->var.xres_virtual ||
2059 sy + height > info->var.yres_virtual)
2062 if (dy > sy || (dy == sy && dx > sx)) {
2067 dst = (unsigned long *)
2068 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2070 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2072 dst_idx += dy*par->next_line*8+dx;
2073 src_idx += sy*par->next_line*8+sx;
2076 dst_idx -= par->next_line*8;
2077 src_idx -= par->next_line*8;
2078 copy_one_line_rev(info->var.bits_per_pixel,
2079 par->next_plane, dst, dst_idx, src,
2084 copy_one_line(info->var.bits_per_pixel,
2085 par->next_plane, dst, dst_idx, src,
2087 dst_idx += par->next_line*8;
2088 src_idx += par->next_line*8;
2094 static inline void expand_one_line(int bpp, unsigned long next_plane,
2095 unsigned long *dst, int dst_idx, u32 n,
2096 const u8 *data, u32 bgcolor, u32 fgcolor)
2098 const unsigned long *src;
2102 dst += dst_idx >> SHIFT_PER_LONG;
2103 dst_idx &= (BITS_PER_LONG-1);
2104 if ((bgcolor ^ fgcolor) & 1) {
2105 src = (unsigned long *)((unsigned long)data & ~(BYTES_PER_LONG-1));
2106 src_idx = ((unsigned long)data & (BYTES_PER_LONG-1))*8;
2108 bitcpy(dst, dst_idx, src, src_idx, n);
2110 bitcpy_not(dst, dst_idx, src, src_idx, n);
2113 bitfill32(dst, dst_idx, fgcolor & 1 ? ~0 : 0, n);
2118 dst_idx += next_plane*8;
2123 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
2125 struct amifb_par *par = (struct amifb_par *)info->par;
2130 u32 dx, dy, width, height, pitch;
2133 * We could use hardware clipping but on many cards you get around
2134 * hardware clipping by writing to framebuffer directly like we are
2137 x2 = image->dx + image->width;
2138 y2 = image->dy + image->height;
2141 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2142 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2146 if (image->depth == 1) {
2147 dst = (unsigned long *)
2148 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2149 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2150 dst_idx += dy*par->next_line*8+dx;
2152 pitch = (image->width+7)/8;
2154 expand_one_line(info->var.bits_per_pixel,
2155 par->next_plane, dst, dst_idx, width,
2156 src, image->bg_color,
2158 dst_idx += par->next_line*8;
2162 c2p_planar(info->screen_base, image->data, dx, dy, width,
2163 height, par->next_line, par->next_plane,
2164 image->width, info->var.bits_per_pixel);
2170 * Amiga Frame Buffer Specific ioctls
2173 static int amifb_ioctl(struct fb_info *info,
2174 unsigned int cmd, unsigned long arg)
2177 struct fb_fix_cursorinfo fix;
2178 struct fb_var_cursorinfo var;
2179 struct fb_cursorstate state;
2181 void __user *argp = (void __user *)arg;
2185 case FBIOGET_FCURSORINFO:
2186 i = ami_get_fix_cursorinfo(&crsr.fix);
2189 return copy_to_user(argp, &crsr.fix,
2190 sizeof(crsr.fix)) ? -EFAULT : 0;
2192 case FBIOGET_VCURSORINFO:
2193 i = ami_get_var_cursorinfo(&crsr.var,
2194 ((struct fb_var_cursorinfo __user *)arg)->data);
2197 return copy_to_user(argp, &crsr.var,
2198 sizeof(crsr.var)) ? -EFAULT : 0;
2200 case FBIOPUT_VCURSORINFO:
2201 if (copy_from_user(&crsr.var, argp, sizeof(crsr.var)))
2203 return ami_set_var_cursorinfo(&crsr.var,
2204 ((struct fb_var_cursorinfo __user *)arg)->data);
2206 case FBIOGET_CURSORSTATE:
2207 i = ami_get_cursorstate(&crsr.state);
2210 return copy_to_user(argp, &crsr.state,
2211 sizeof(crsr.state)) ? -EFAULT : 0;
2213 case FBIOPUT_CURSORSTATE:
2214 if (copy_from_user(&crsr.state, argp,
2215 sizeof(crsr.state)))
2217 return ami_set_cursorstate(&crsr.state);
2224 * Allocate, Clear and Align a Block of Chip Memory
2227 static u_long unaligned_chipptr = 0;
2229 static inline u_long __init chipalloc(u_long size)
2231 size += PAGE_SIZE-1;
2232 if (!(unaligned_chipptr = (u_long)amiga_chip_alloc(size,
2234 panic("No Chip RAM for frame buffer");
2235 memset((void *)unaligned_chipptr, 0, size);
2236 return PAGE_ALIGN(unaligned_chipptr);
2239 static inline void chipfree(void)
2241 if (unaligned_chipptr)
2242 amiga_chip_free((void *)unaligned_chipptr);
2250 static int __init amifb_init(void)
2252 int tag, i, err = 0;
2257 char *option = NULL;
2259 if (fb_get_options("amifb", &option)) {
2263 amifb_setup(option);
2265 if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_VIDEO))
2269 * We request all registers starting from bplpt[0]
2271 if (!request_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120,
2272 "amifb [Denise/Lisa]"))
2275 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2277 switch (amiga_chipset) {
2278 #ifdef CONFIG_FB_AMIGA_OCS
2280 strcat(fb_info.fix.id, "OCS");
2283 maxdepth[TAG_SHRES] = 0; /* OCS means no SHRES */
2284 maxdepth[TAG_HIRES] = 4;
2285 maxdepth[TAG_LORES] = 6;
2286 maxfmode = TAG_FMODE_1;
2287 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2289 fb_info.fix.smem_len = VIDEOMEMSIZE_OCS;
2291 #endif /* CONFIG_FB_AMIGA_OCS */
2293 #ifdef CONFIG_FB_AMIGA_ECS
2295 strcat(fb_info.fix.id, "ECS");
2297 maxdepth[TAG_SHRES] = 2;
2298 maxdepth[TAG_HIRES] = 4;
2299 maxdepth[TAG_LORES] = 6;
2300 maxfmode = TAG_FMODE_1;
2301 if (AMIGAHW_PRESENT(AMBER_FF))
2302 defmode = amiga_vblank == 50 ? DEFMODE_AMBER_PAL
2303 : DEFMODE_AMBER_NTSC;
2305 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2307 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2308 VIDEOMEMSIZE_ECS_1M)
2309 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_2M;
2311 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_1M;
2313 #endif /* CONFIG_FB_AMIGA_ECS */
2315 #ifdef CONFIG_FB_AMIGA_AGA
2317 strcat(fb_info.fix.id, "AGA");
2319 maxdepth[TAG_SHRES] = 8;
2320 maxdepth[TAG_HIRES] = 8;
2321 maxdepth[TAG_LORES] = 8;
2322 maxfmode = TAG_FMODE_4;
2323 defmode = DEFMODE_AGA;
2324 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2325 VIDEOMEMSIZE_AGA_1M)
2326 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_2M;
2328 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_1M;
2330 #endif /* CONFIG_FB_AMIGA_AGA */
2333 #ifdef CONFIG_FB_AMIGA_OCS
2334 printk("Unknown graphics chipset, defaulting to OCS\n");
2335 strcat(fb_info.fix.id, "Unknown");
2336 goto default_chipset;
2337 #else /* CONFIG_FB_AMIGA_OCS */
2340 #endif /* CONFIG_FB_AMIGA_OCS */
2345 * Calculate the Pixel Clock Values for this Machine
2349 u_long tmp = DIVUL(200000000000ULL, amiga_eclock);
2351 pixclock[TAG_SHRES] = (tmp + 4) / 8; /* SHRES: 35 ns / 28 MHz */
2352 pixclock[TAG_HIRES] = (tmp + 2) / 4; /* HIRES: 70 ns / 14 MHz */
2353 pixclock[TAG_LORES] = (tmp + 1) / 2; /* LORES: 140 ns / 7 MHz */
2357 * Replace the Tag Values with the Real Pixel Clock Values
2360 for (i = 0; i < NUM_TOTAL_MODES; i++) {
2361 struct fb_videomode *mode = &ami_modedb[i];
2362 tag = mode->pixclock;
2363 if (tag == TAG_SHRES || tag == TAG_HIRES || tag == TAG_LORES) {
2364 mode->pixclock = pixclock[tag];
2369 * These monitor specs are for a typical Amiga monitor (e.g. A1960)
2371 if (fb_info.monspecs.hfmin == 0) {
2372 fb_info.monspecs.hfmin = 15000;
2373 fb_info.monspecs.hfmax = 38000;
2374 fb_info.monspecs.vfmin = 49;
2375 fb_info.monspecs.vfmax = 90;
2378 fb_info.fbops = &amifb_ops;
2379 fb_info.par = ¤tpar;
2380 fb_info.flags = FBINFO_DEFAULT;
2382 if (!fb_find_mode(&fb_info.var, &fb_info, mode_option, ami_modedb,
2383 NUM_TOTAL_MODES, &ami_modedb[defmode], 4)) {
2388 fb_videomode_to_modelist(ami_modedb, NUM_TOTAL_MODES,
2392 chipptr = chipalloc(fb_info.fix.smem_len+
2398 assignchunk(videomemory, u_long, chipptr, fb_info.fix.smem_len);
2399 assignchunk(spritememory, u_long, chipptr, SPRITEMEMSIZE);
2400 assignchunk(dummysprite, u_short *, chipptr, DUMMYSPRITEMEMSIZE);
2401 assignchunk(copdisplay.init, copins *, chipptr, COPINITSIZE);
2402 assignchunk(copdisplay.list[0][0], copins *, chipptr, COPLISTSIZE);
2403 assignchunk(copdisplay.list[0][1], copins *, chipptr, COPLISTSIZE);
2404 assignchunk(copdisplay.list[1][0], copins *, chipptr, COPLISTSIZE);
2405 assignchunk(copdisplay.list[1][1], copins *, chipptr, COPLISTSIZE);
2408 * access the videomem with writethrough cache
2410 fb_info.fix.smem_start = (u_long)ZTWO_PADDR(videomemory);
2411 videomemory = (u_long)ioremap_writethrough(fb_info.fix.smem_start,
2412 fb_info.fix.smem_len);
2414 printk("amifb: WARNING! unable to map videomem cached writethrough\n");
2415 fb_info.screen_base = (char *)ZTWO_VADDR(fb_info.fix.smem_start);
2417 fb_info.screen_base = (char *)videomemory;
2419 memset(dummysprite, 0, DUMMYSPRITEMEMSIZE);
2422 * Enable Display DMA
2425 custom.dmacon = DMAF_SETCLR | DMAF_MASTER | DMAF_RASTER | DMAF_COPPER |
2426 DMAF_BLITTER | DMAF_SPRITE;
2429 * Make sure the Copper has something to do
2434 if (request_irq(IRQ_AMIGA_COPPER, amifb_interrupt, 0,
2435 "fb vertb handler", ¤tpar)) {
2440 err = fb_alloc_cmap(&fb_info.cmap, 1<<fb_info.var.bits_per_pixel, 0);
2444 if (register_framebuffer(&fb_info) < 0) {
2449 printk("fb%d: %s frame buffer device, using %dK of video memory\n",
2450 fb_info.node, fb_info.fix.id, fb_info.fix.smem_len>>10);
2459 static void amifb_deinit(void)
2461 if (fb_info.cmap.len)
2462 fb_dealloc_cmap(&fb_info.cmap);
2465 iounmap((void*)videomemory);
2466 release_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120);
2467 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2472 * Blank the display.
2475 static int amifb_blank(int blank, struct fb_info *info)
2477 do_blank = blank ? blank : -1;
2483 * Flash the cursor (called by VBlank interrupt)
2486 static int flash_cursor(void)
2488 static int cursorcount = 1;
2490 if (cursormode == FB_CURSOR_FLASH) {
2491 if (!--cursorcount) {
2492 cursorstate = -cursorstate;
2493 cursorcount = cursorrate;
2502 * VBlank Display Interrupt
2505 static irqreturn_t amifb_interrupt(int irq, void *dev_id)
2507 if (do_vmode_pan || do_vmode_full)
2508 ami_update_display();
2515 ami_rebuild_copper();
2516 do_cursor = do_vmode_pan = 0;
2517 } else if (do_cursor) {
2531 if (do_vmode_full) {
2532 ami_reinit_copper();
2538 /* --------------------------- Hardware routines --------------------------- */
2541 * Get the video params out of `var'. If a value doesn't fit, round
2542 * it up, if it's too big, return -EINVAL.
2545 static int ami_decode_var(struct fb_var_screeninfo *var,
2546 struct amifb_par *par)
2548 u_short clk_shift, line_shift;
2549 u_long maxfetchstop, fstrt, fsize, fconst, xres_n, yres_n;
2550 u_int htotal, vtotal;
2553 * Find a matching Pixel Clock
2556 for (clk_shift = TAG_SHRES; clk_shift <= TAG_LORES; clk_shift++)
2557 if (var->pixclock <= pixclock[clk_shift])
2559 if (clk_shift > TAG_LORES) {
2560 DPRINTK("pixclock too high\n");
2563 par->clk_shift = clk_shift;
2566 * Check the Geometry Values
2569 if ((par->xres = var->xres) < 64)
2571 if ((par->yres = var->yres) < 64)
2573 if ((par->vxres = var->xres_virtual) < par->xres)
2574 par->vxres = par->xres;
2575 if ((par->vyres = var->yres_virtual) < par->yres)
2576 par->vyres = par->yres;
2578 par->bpp = var->bits_per_pixel;
2582 if (par->bpp > maxdepth[clk_shift]) {
2583 if (round_down_bpp && maxdepth[clk_shift])
2584 par->bpp = maxdepth[clk_shift];
2586 DPRINTK("invalid bpp\n");
2590 } else if (var->nonstd == FB_NONSTD_HAM) {
2593 if (par->bpp != 6) {
2596 if (par->bpp != 8 || !IS_AGA) {
2597 DPRINTK("invalid bpp for ham mode\n");
2602 DPRINTK("unknown nonstd mode\n");
2607 * FB_VMODE_SMOOTH_XPAN will be cleared, if one of the folloing
2608 * checks failed and smooth scrolling is not possible
2611 par->vmode = var->vmode | FB_VMODE_SMOOTH_XPAN;
2612 switch (par->vmode & FB_VMODE_MASK) {
2613 case FB_VMODE_INTERLACED:
2616 case FB_VMODE_NONINTERLACED:
2619 case FB_VMODE_DOUBLE:
2621 DPRINTK("double mode only possible with aga\n");
2627 DPRINTK("unknown video mode\n");
2631 par->line_shift = line_shift;
2634 * Vertical and Horizontal Timings
2637 xres_n = par->xres<<clk_shift;
2638 yres_n = par->yres<<line_shift;
2639 par->htotal = down8((var->left_margin+par->xres+var->right_margin+var->hsync_len)<<clk_shift);
2640 par->vtotal = down2(((var->upper_margin+par->yres+var->lower_margin+var->vsync_len)<<line_shift)+1);
2643 par->bplcon3 = sprpixmode[clk_shift];
2646 if (var->sync & FB_SYNC_BROADCAST) {
2647 par->diwstop_h = par->htotal-((var->right_margin-var->hsync_len)<<clk_shift);
2649 par->diwstop_h += mod4(var->hsync_len);
2651 par->diwstop_h = down4(par->diwstop_h);
2653 par->diwstrt_h = par->diwstop_h - xres_n;
2654 par->diwstop_v = par->vtotal-((var->lower_margin-var->vsync_len)<<line_shift);
2655 par->diwstrt_v = par->diwstop_v - yres_n;
2656 if (par->diwstop_h >= par->htotal+8) {
2657 DPRINTK("invalid diwstop_h\n");
2660 if (par->diwstop_v > par->vtotal) {
2661 DPRINTK("invalid diwstop_v\n");
2666 /* Initialize sync with some reasonable values for pwrsave */
2677 if (par->vtotal > (PAL_VTOTAL+NTSC_VTOTAL)/2) {
2678 /* PAL video mode */
2679 if (par->htotal != PAL_HTOTAL) {
2680 DPRINTK("htotal invalid for pal\n");
2683 if (par->diwstrt_h < PAL_DIWSTRT_H) {
2684 DPRINTK("diwstrt_h too low for pal\n");
2687 if (par->diwstrt_v < PAL_DIWSTRT_V) {
2688 DPRINTK("diwstrt_v too low for pal\n");
2691 htotal = PAL_HTOTAL>>clk_shift;
2692 vtotal = PAL_VTOTAL>>1;
2694 par->beamcon0 = BMC0_PAL;
2695 par->bplcon3 |= BPC3_BRDRBLNK;
2696 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2697 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2698 par->beamcon0 = BMC0_PAL;
2700 } else if (amiga_vblank != 50) {
2701 DPRINTK("pal not supported by this chipset\n");
2706 * In the AGA chipset seems to be hardware bug with BPC3_BRDRBLNK
2707 * and NTSC activated, so than better let diwstop_h <= 1812
2709 if (par->htotal != NTSC_HTOTAL) {
2710 DPRINTK("htotal invalid for ntsc\n");
2713 if (par->diwstrt_h < NTSC_DIWSTRT_H) {
2714 DPRINTK("diwstrt_h too low for ntsc\n");
2717 if (par->diwstrt_v < NTSC_DIWSTRT_V) {
2718 DPRINTK("diwstrt_v too low for ntsc\n");
2721 htotal = NTSC_HTOTAL>>clk_shift;
2722 vtotal = NTSC_VTOTAL>>1;
2725 par->bplcon3 |= BPC3_BRDRBLNK;
2726 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2727 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2730 } else if (amiga_vblank != 60) {
2731 DPRINTK("ntsc not supported by this chipset\n");
2736 if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
2737 par->diwstrt_v >= 512 || par->diwstop_v < 256) {
2738 DPRINTK("invalid position for display on ocs\n");
2742 } else if (!IS_OCS) {
2743 /* Programmable video mode */
2744 par->hsstrt = var->right_margin<<clk_shift;
2745 par->hsstop = (var->right_margin+var->hsync_len)<<clk_shift;
2746 par->diwstop_h = par->htotal - mod8(par->hsstrt) + 8 - (1 << clk_shift);
2748 par->diwstop_h = down4(par->diwstop_h) - 16;
2749 par->diwstrt_h = par->diwstop_h - xres_n;
2750 par->hbstop = par->diwstrt_h + 4;
2751 par->hbstrt = par->diwstop_h + 4;
2752 if (par->hbstrt >= par->htotal + 8)
2753 par->hbstrt -= par->htotal;
2754 par->hcenter = par->hsstrt + (par->htotal >> 1);
2755 par->vsstrt = var->lower_margin<<line_shift;
2756 par->vsstop = (var->lower_margin+var->vsync_len)<<line_shift;
2757 par->diwstop_v = par->vtotal;
2758 if ((par->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
2759 par->diwstop_v -= 2;
2760 par->diwstrt_v = par->diwstop_v - yres_n;
2761 par->vbstop = par->diwstrt_v - 2;
2762 par->vbstrt = par->diwstop_v - 2;
2763 if (par->vtotal > 2048) {
2764 DPRINTK("vtotal too high\n");
2767 if (par->htotal > 2048) {
2768 DPRINTK("htotal too high\n");
2771 par->bplcon3 |= BPC3_EXTBLKEN;
2772 par->beamcon0 = BMC0_HARDDIS | BMC0_VARVBEN | BMC0_LOLDIS |
2773 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARBEAMEN |
2774 BMC0_PAL | BMC0_VARCSYEN;
2775 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
2776 par->beamcon0 |= BMC0_HSYTRUE;
2777 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
2778 par->beamcon0 |= BMC0_VSYTRUE;
2779 if (var->sync & FB_SYNC_COMP_HIGH_ACT)
2780 par->beamcon0 |= BMC0_CSYTRUE;
2781 htotal = par->htotal>>clk_shift;
2782 vtotal = par->vtotal>>1;
2784 DPRINTK("only broadcast modes possible for ocs\n");
2789 * Checking the DMA timing
2792 fconst = 16<<maxfmode<<clk_shift;
2795 * smallest window start value without turn off other dma cycles
2796 * than sprite1-7, unless you change min_fstrt
2800 fsize = ((maxfmode+clk_shift <= 1) ? fconst : 64);
2801 fstrt = downx(fconst, par->diwstrt_h-4) - fsize;
2802 if (fstrt < min_fstrt) {
2803 DPRINTK("fetch start too low\n");
2808 * smallest window start value where smooth scrolling is possible
2811 fstrt = downx(fconst, par->diwstrt_h-fconst+(1<<clk_shift)-4) - fsize;
2812 if (fstrt < min_fstrt)
2813 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2815 maxfetchstop = down16(par->htotal - 80);
2817 fstrt = downx(fconst, par->diwstrt_h-4) - 64 - fconst;
2818 fsize = upx(fconst, xres_n + modx(fconst, downx(1<<clk_shift, par->diwstrt_h-4)));
2819 if (fstrt + fsize > maxfetchstop)
2820 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2822 fsize = upx(fconst, xres_n);
2823 if (fstrt + fsize > maxfetchstop) {
2824 DPRINTK("fetch stop too high\n");
2828 if (maxfmode + clk_shift <= 1) {
2829 fsize = up64(xres_n + fconst - 1);
2830 if (min_fstrt + fsize - 64 > maxfetchstop)
2831 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2833 fsize = up64(xres_n);
2834 if (min_fstrt + fsize - 64 > maxfetchstop) {
2835 DPRINTK("fetch size too high\n");
2844 * Check if there is enough time to update the bitplane pointers for ywrap
2847 if (par->htotal-fsize-64 < par->bpp*64)
2848 par->vmode &= ~FB_VMODE_YWRAP;
2851 * Bitplane calculations and check the Memory Requirements
2855 par->next_plane = div8(upx(16<<maxfmode, par->vxres));
2856 par->next_line = par->bpp*par->next_plane;
2857 if (par->next_line * par->vyres > fb_info.fix.smem_len) {
2858 DPRINTK("too few video mem\n");
2862 par->next_line = div8(upx(16<<maxfmode, par->vxres));
2863 par->next_plane = par->vyres*par->next_line;
2864 if (par->next_plane * par->bpp > fb_info.fix.smem_len) {
2865 DPRINTK("too few video mem\n");
2871 * Hardware Register Values
2874 par->bplcon0 = BPC0_COLOR | bplpixmode[clk_shift];
2876 par->bplcon0 |= BPC0_ECSENA;
2878 par->bplcon0 |= BPC0_BPU3;
2880 par->bplcon0 |= par->bpp<<12;
2881 if (var->nonstd == FB_NONSTD_HAM)
2882 par->bplcon0 |= BPC0_HAM;
2883 if (var->sync & FB_SYNC_EXT)
2884 par->bplcon0 |= BPC0_ERSY;
2887 par->fmode = bplfetchmode[maxfmode];
2889 switch (par->vmode & FB_VMODE_MASK) {
2890 case FB_VMODE_INTERLACED:
2891 par->bplcon0 |= BPC0_LACE;
2893 case FB_VMODE_DOUBLE:
2895 par->fmode |= FMODE_SSCAN2 | FMODE_BSCAN2;
2899 if (!((par->vmode ^ var->vmode) & FB_VMODE_YWRAP)) {
2900 par->xoffset = var->xoffset;
2901 par->yoffset = var->yoffset;
2902 if (par->vmode & FB_VMODE_YWRAP) {
2903 if (par->xoffset || par->yoffset < 0 || par->yoffset >= par->vyres)
2904 par->xoffset = par->yoffset = 0;
2906 if (par->xoffset < 0 || par->xoffset > upx(16<<maxfmode, par->vxres-par->xres) ||
2907 par->yoffset < 0 || par->yoffset > par->vyres-par->yres)
2908 par->xoffset = par->yoffset = 0;
2911 par->xoffset = par->yoffset = 0;
2913 par->crsr.crsr_x = par->crsr.crsr_y = 0;
2914 par->crsr.spot_x = par->crsr.spot_y = 0;
2915 par->crsr.height = par->crsr.width = 0;
2921 * Fill the `var' structure based on the values in `par' and maybe
2922 * other values read out of the hardware.
2925 static int ami_encode_var(struct fb_var_screeninfo *var,
2926 struct amifb_par *par)
2928 u_short clk_shift, line_shift;
2930 memset(var, 0, sizeof(struct fb_var_screeninfo));
2932 clk_shift = par->clk_shift;
2933 line_shift = par->line_shift;
2935 var->xres = par->xres;
2936 var->yres = par->yres;
2937 var->xres_virtual = par->vxres;
2938 var->yres_virtual = par->vyres;
2939 var->xoffset = par->xoffset;
2940 var->yoffset = par->yoffset;
2942 var->bits_per_pixel = par->bpp;
2945 var->red.offset = 0;
2946 var->red.msb_right = 0;
2947 var->red.length = par->bpp;
2948 if (par->bplcon0 & BPC0_HAM)
2949 var->red.length -= 2;
2950 var->blue = var->green = var->red;
2951 var->transp.offset = 0;
2952 var->transp.length = 0;
2953 var->transp.msb_right = 0;
2955 if (par->bplcon0 & BPC0_HAM)
2956 var->nonstd = FB_NONSTD_HAM;
2964 var->pixclock = pixclock[clk_shift];
2966 if (IS_AGA && par->fmode & FMODE_BSCAN2)
2967 var->vmode = FB_VMODE_DOUBLE;
2968 else if (par->bplcon0 & BPC0_LACE)
2969 var->vmode = FB_VMODE_INTERLACED;
2971 var->vmode = FB_VMODE_NONINTERLACED;
2973 if (!IS_OCS && par->beamcon0 & BMC0_VARBEAMEN) {
2974 var->hsync_len = (par->hsstop-par->hsstrt)>>clk_shift;
2975 var->right_margin = par->hsstrt>>clk_shift;
2976 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2977 var->vsync_len = (par->vsstop-par->vsstrt)>>line_shift;
2978 var->lower_margin = par->vsstrt>>line_shift;
2979 var->upper_margin = (par->vtotal>>line_shift) - var->yres - var->lower_margin - var->vsync_len;
2981 if (par->beamcon0 & BMC0_HSYTRUE)
2982 var->sync |= FB_SYNC_HOR_HIGH_ACT;
2983 if (par->beamcon0 & BMC0_VSYTRUE)
2984 var->sync |= FB_SYNC_VERT_HIGH_ACT;
2985 if (par->beamcon0 & BMC0_CSYTRUE)
2986 var->sync |= FB_SYNC_COMP_HIGH_ACT;
2988 var->sync = FB_SYNC_BROADCAST;
2989 var->hsync_len = (152>>clk_shift) + mod4(par->diwstop_h);
2990 var->right_margin = ((par->htotal - down4(par->diwstop_h))>>clk_shift) + var->hsync_len;
2991 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2992 var->vsync_len = 4>>line_shift;
2993 var->lower_margin = ((par->vtotal - par->diwstop_v)>>line_shift) + var->vsync_len;
2994 var->upper_margin = (((par->vtotal - 2)>>line_shift) + 1) - var->yres -
2995 var->lower_margin - var->vsync_len;
2998 if (par->bplcon0 & BPC0_ERSY)
2999 var->sync |= FB_SYNC_EXT;
3000 if (par->vmode & FB_VMODE_YWRAP)
3001 var->vmode |= FB_VMODE_YWRAP;
3008 * Pan or Wrap the Display
3010 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
3014 static void ami_pan_var(struct fb_var_screeninfo *var)
3016 struct amifb_par *par = ¤tpar;
3018 par->xoffset = var->xoffset;
3019 par->yoffset = var->yoffset;
3020 if (var->vmode & FB_VMODE_YWRAP)
3021 par->vmode |= FB_VMODE_YWRAP;
3023 par->vmode &= ~FB_VMODE_YWRAP;
3034 static int ami_update_par(void)
3036 struct amifb_par *par = ¤tpar;
3037 short clk_shift, vshift, fstrt, fsize, fstop, fconst, shift, move, mod;
3039 clk_shift = par->clk_shift;
3041 if (!(par->vmode & FB_VMODE_SMOOTH_XPAN))
3042 par->xoffset = upx(16<<maxfmode, par->xoffset);
3044 fconst = 16<<maxfmode<<clk_shift;
3045 vshift = modx(16<<maxfmode, par->xoffset);
3046 fstrt = par->diwstrt_h - (vshift<<clk_shift) - 4;
3047 fsize = (par->xres+vshift)<<clk_shift;
3048 shift = modx(fconst, fstrt);
3049 move = downx(2<<maxfmode, div8(par->xoffset));
3050 if (maxfmode + clk_shift > 1) {
3051 fstrt = downx(fconst, fstrt) - 64;
3052 fsize = upx(fconst, fsize);
3053 fstop = fstrt + fsize - fconst;
3055 mod = fstrt = downx(fconst, fstrt) - fconst;
3056 fstop = fstrt + upx(fconst, fsize) - 64;
3057 fsize = up64(fsize);
3058 fstrt = fstop - fsize + 64;
3059 if (fstrt < min_fstrt) {
3060 fstop += min_fstrt - fstrt;
3063 move = move - div8((mod-fstrt)>>clk_shift);
3065 mod = par->next_line - div8(fsize>>clk_shift);
3066 par->ddfstrt = fstrt;
3067 par->ddfstop = fstop;
3068 par->bplcon1 = hscroll2hw(shift);
3070 if (par->bplcon0 & BPC0_LACE)
3071 par->bpl2mod += par->next_line;
3072 if (IS_AGA && (par->fmode & FMODE_BSCAN2))
3073 par->bpl1mod = -div8(fsize>>clk_shift);
3075 par->bpl1mod = par->bpl2mod;
3078 par->bplpt0 = fb_info.fix.smem_start + par->next_line*par->yoffset + move;
3079 if (par->vmode & FB_VMODE_YWRAP) {
3080 if (par->yoffset > par->vyres-par->yres) {
3081 par->bplpt0wrap = fb_info.fix.smem_start + move;
3082 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v+par->vyres-par->yoffset))
3083 par->bplpt0wrap += par->next_line;
3087 par->bplpt0 = fb_info.fix.smem_start + move;
3089 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v))
3090 par->bplpt0 += par->next_line;
3097 * Set a single color register. The values supplied are already
3098 * rounded down to the hardware's capabilities (according to the
3099 * entries in the var structure). Return != 0 for invalid regno.
3102 static int amifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
3103 u_int transp, struct fb_info *info)
3108 } else if (currentpar.bplcon0 & BPC0_SHRES) {
3125 * Update the corresponding Hardware Color Register, unless it's Color
3126 * Register 0 and the screen is blanked.
3128 * VBlank is switched off to protect bplcon3 or ecs_palette[] from
3129 * being changed by ami_do_blank() during the VBlank.
3132 if (regno || !is_blanked) {
3133 #if defined(CONFIG_FB_AMIGA_AGA)
3135 u_short bplcon3 = currentpar.bplcon3;
3137 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000);
3138 custom.color[regno&31] = rgb2hw8_high(red, green, blue);
3139 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000) | BPC3_LOCT;
3140 custom.color[regno&31] = rgb2hw8_low(red, green, blue);
3141 custom.bplcon3 = bplcon3;
3145 #if defined(CONFIG_FB_AMIGA_ECS)
3146 if (currentpar.bplcon0 & BPC0_SHRES) {
3147 u_short color, mask;
3151 color = rgb2hw2(red, green, blue);
3153 for (i = regno+12; i >= (int)regno; i -= 4)
3154 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3155 mask <<=2; color >>= 2;
3156 regno = down16(regno)+mul4(mod4(regno));
3157 for (i = regno+3; i >= (int)regno; i--)
3158 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3162 custom.color[regno] = rgb2hw4(red, green, blue);
3167 static void ami_update_display(void)
3169 struct amifb_par *par = ¤tpar;
3171 custom.bplcon1 = par->bplcon1;
3172 custom.bpl1mod = par->bpl1mod;
3173 custom.bpl2mod = par->bpl2mod;
3174 custom.ddfstrt = ddfstrt2hw(par->ddfstrt);
3175 custom.ddfstop = ddfstop2hw(par->ddfstop);
3179 * Change the video mode (called by VBlank interrupt)
3182 static void ami_init_display(void)
3184 struct amifb_par *par = ¤tpar;
3187 custom.bplcon0 = par->bplcon0 & ~BPC0_LACE;
3188 custom.bplcon2 = (IS_OCS ? 0 : BPC2_KILLEHB) | BPC2_PF2P2 | BPC2_PF1P2;
3190 custom.bplcon3 = par->bplcon3;
3192 custom.bplcon4 = BPC4_ESPRM4 | BPC4_OSPRM4;
3193 if (par->beamcon0 & BMC0_VARBEAMEN) {
3194 custom.htotal = htotal2hw(par->htotal);
3195 custom.hbstrt = hbstrt2hw(par->hbstrt);
3196 custom.hbstop = hbstop2hw(par->hbstop);
3197 custom.hsstrt = hsstrt2hw(par->hsstrt);
3198 custom.hsstop = hsstop2hw(par->hsstop);
3199 custom.hcenter = hcenter2hw(par->hcenter);
3200 custom.vtotal = vtotal2hw(par->vtotal);
3201 custom.vbstrt = vbstrt2hw(par->vbstrt);
3202 custom.vbstop = vbstop2hw(par->vbstop);
3203 custom.vsstrt = vsstrt2hw(par->vsstrt);
3204 custom.vsstop = vsstop2hw(par->vsstop);
3207 if (!IS_OCS || par->hsstop)
3208 custom.beamcon0 = par->beamcon0;
3210 custom.fmode = par->fmode;
3213 * The minimum period for audio depends on htotal
3216 amiga_audio_min_period = div16(par->htotal);
3218 is_lace = par->bplcon0 & BPC0_LACE ? 1 : 0;
3221 i = custom.vposr >> 15;
3223 custom.vposw = custom.vposr | 0x8000;
3228 custom.vposw = custom.vposr | 0x8000;
3230 custom.cop2lc = (u_short *)ZTWO_PADDR(copdisplay.list[currentcop][i]);
3234 * (Un)Blank the screen (called by VBlank interrupt)
3237 static void ami_do_blank(void)
3239 struct amifb_par *par = ¤tpar;
3240 #if defined(CONFIG_FB_AMIGA_AGA)
3241 u_short bplcon3 = par->bplcon3;
3243 u_char red, green, blue;
3246 custom.dmacon = DMAF_RASTER | DMAF_SPRITE;
3247 red = green = blue = 0;
3248 if (!IS_OCS && do_blank > 1) {
3250 case FB_BLANK_VSYNC_SUSPEND:
3251 custom.hsstrt = hsstrt2hw(par->hsstrt);
3252 custom.hsstop = hsstop2hw(par->hsstop);
3253 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3254 custom.vsstop = vsstop2hw(par->vtotal+4);
3256 case FB_BLANK_HSYNC_SUSPEND:
3257 custom.hsstrt = hsstrt2hw(par->htotal+16);
3258 custom.hsstop = hsstop2hw(par->htotal+16);
3259 custom.vsstrt = vsstrt2hw(par->vsstrt);
3260 custom.vsstop = vsstrt2hw(par->vsstop);
3262 case FB_BLANK_POWERDOWN:
3263 custom.hsstrt = hsstrt2hw(par->htotal+16);
3264 custom.hsstop = hsstop2hw(par->htotal+16);
3265 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3266 custom.vsstop = vsstop2hw(par->vtotal+4);
3269 if (!(par->beamcon0 & BMC0_VARBEAMEN)) {
3270 custom.htotal = htotal2hw(par->htotal);
3271 custom.vtotal = vtotal2hw(par->vtotal);
3272 custom.beamcon0 = BMC0_HARDDIS | BMC0_VARBEAMEN |
3273 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARCSYEN;
3277 custom.dmacon = DMAF_SETCLR | DMAF_RASTER | DMAF_SPRITE;
3282 custom.hsstrt = hsstrt2hw(par->hsstrt);
3283 custom.hsstop = hsstop2hw(par->hsstop);
3284 custom.vsstrt = vsstrt2hw(par->vsstrt);
3285 custom.vsstop = vsstop2hw(par->vsstop);
3286 custom.beamcon0 = par->beamcon0;
3289 #if defined(CONFIG_FB_AMIGA_AGA)
3291 custom.bplcon3 = bplcon3;
3292 custom.color[0] = rgb2hw8_high(red, green, blue);
3293 custom.bplcon3 = bplcon3 | BPC3_LOCT;
3294 custom.color[0] = rgb2hw8_low(red, green, blue);
3295 custom.bplcon3 = bplcon3;
3298 #if defined(CONFIG_FB_AMIGA_ECS)
3299 if (par->bplcon0 & BPC0_SHRES) {
3300 u_short color, mask;
3304 color = rgb2hw2(red, green, blue);
3305 for (i = 12; i >= 0; i -= 4)
3306 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3307 mask <<=2; color >>= 2;
3308 for (i = 3; i >= 0; i--)
3309 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3312 custom.color[0] = rgb2hw4(red, green, blue);
3313 is_blanked = do_blank > 0 ? do_blank : 0;
3316 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix)
3318 struct amifb_par *par = ¤tpar;
3320 fix->crsr_width = fix->crsr_xsize = par->crsr.width;
3321 fix->crsr_height = fix->crsr_ysize = par->crsr.height;
3322 fix->crsr_color1 = 17;
3323 fix->crsr_color2 = 18;
3327 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
3329 struct amifb_par *par = ¤tpar;
3330 register u_short *lspr, *sspr;
3332 register u_long datawords asm ("d2");
3334 register u_long datawords;
3336 register short delta;
3337 register u_char color;
3338 short height, width, bits, words;
3341 size = par->crsr.height*par->crsr.width;
3342 alloc = var->height*var->width;
3343 var->height = par->crsr.height;
3344 var->width = par->crsr.width;
3345 var->xspot = par->crsr.spot_x;
3346 var->yspot = par->crsr.spot_y;
3347 if (size > var->height*var->width)
3348 return -ENAMETOOLONG;
3349 if (!access_ok(VERIFY_WRITE, data, size))
3351 delta = 1<<par->crsr.fmode;
3352 lspr = lofsprite + (delta<<1);
3353 if (par->bplcon0 & BPC0_LACE)
3354 sspr = shfsprite + (delta<<1);
3357 for (height = (short)var->height-1; height >= 0; height--) {
3358 bits = 0; words = delta; datawords = 0;
3359 for (width = (short)var->width-1; width >= 0; width--) {
3363 asm volatile ("movew %1@(%3:w:2),%0 ; swap %0 ; movew %1@+,%0"
3364 : "=d" (datawords), "=a" (lspr) : "1" (lspr), "d" (delta));
3366 datawords = (*(lspr+delta) << 16) | (*lspr++);
3372 "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; "
3373 "swap %1 ; lslw #1,%1 ; roxlb #1,%0"
3374 : "=d" (color), "=d" (datawords) : "1" (datawords));
3376 color = (((datawords >> 30) & 2)
3377 | ((datawords >> 15) & 1));
3380 put_user(color, data++);
3385 while (--words >= 0)
3388 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3389 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3393 u_short *tmp = lspr;
3402 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
3404 struct amifb_par *par = ¤tpar;
3405 register u_short *lspr, *sspr;
3407 register u_long datawords asm ("d2");
3409 register u_long datawords;
3411 register short delta;
3413 short height, width, bits, words;
3417 else if (var->width <= 16)
3418 fmode = TAG_FMODE_1;
3419 else if (var->width <= 32)
3420 fmode = TAG_FMODE_2;
3421 else if (var->width <= 64)
3422 fmode = TAG_FMODE_4;
3425 if (fmode > maxfmode)
3429 if (!access_ok(VERIFY_READ, data, var->width*var->height))
3432 lofsprite = shfsprite = (u_short *)spritememory;
3433 lspr = lofsprite + (delta<<1);
3434 if (par->bplcon0 & BPC0_LACE) {
3435 if (((var->height+4)<<fmode<<2) > SPRITEMEMSIZE)
3437 memset(lspr, 0, (var->height+4)<<fmode<<2);
3438 shfsprite += ((var->height+5)&-2)<<fmode;
3439 sspr = shfsprite + (delta<<1);
3441 if (((var->height+2)<<fmode<<2) > SPRITEMEMSIZE)
3443 memset(lspr, 0, (var->height+2)<<fmode<<2);
3446 for (height = (short)var->height-1; height >= 0; height--) {
3447 bits = 16; words = delta; datawords = 0;
3448 for (width = (short)var->width-1; width >= 0; width--) {
3449 unsigned long tdata = 0;
3450 get_user(tdata, data);
3454 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0 ; "
3455 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0"
3457 : "0" (datawords), "d" (tdata));
3459 datawords = ((datawords << 1) & 0xfffefffe);
3460 datawords |= tdata & 1;
3461 datawords |= (tdata & 2) << (16-1);
3466 asm volatile ("swap %2 ; movew %2,%0@(%3:w:2) ; swap %2 ; movew %2,%0@+"
3467 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta));
3469 *(lspr+delta) = (u_short) (datawords >> 16);
3470 *lspr++ = (u_short) (datawords & 0xffff);
3478 "swap %2 ; lslw %4,%2 ; movew %2,%0@(%3:w:2) ; "
3479 "swap %2 ; lslw %4,%2 ; movew %2,%0@+"
3480 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta), "d" (bits));
3482 *(lspr+delta) = (u_short) (datawords >> (16+bits));
3483 *lspr++ = (u_short) ((datawords & 0x0000ffff) >> bits);
3486 while (--words >= 0) {
3488 asm volatile ("moveql #0,%%d0 ; movew %%d0,%0@(%2:w:2) ; movew %%d0,%0@+"
3489 : "=a" (lspr) : "0" (lspr), "d" (delta) : "d0");
3496 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3497 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3501 u_short *tmp = lspr;
3507 par->crsr.height = var->height;
3508 par->crsr.width = var->width;
3509 par->crsr.spot_x = var->xspot;
3510 par->crsr.spot_y = var->yspot;
3511 par->crsr.fmode = fmode;
3513 par->fmode &= ~(FMODE_SPAGEM | FMODE_SPR32);
3514 par->fmode |= sprfetchmode[fmode];
3515 custom.fmode = par->fmode;
3520 static int ami_get_cursorstate(struct fb_cursorstate *state)
3522 struct amifb_par *par = ¤tpar;
3524 state->xoffset = par->crsr.crsr_x;
3525 state->yoffset = par->crsr.crsr_y;
3526 state->mode = cursormode;
3530 static int ami_set_cursorstate(struct fb_cursorstate *state)
3532 struct amifb_par *par = ¤tpar;
3534 par->crsr.crsr_x = state->xoffset;
3535 par->crsr.crsr_y = state->yoffset;
3536 if ((cursormode = state->mode) == FB_CURSOR_OFF)
3542 static void ami_set_sprite(void)
3544 struct amifb_par *par = ¤tpar;
3545 copins *copl, *cops;
3550 cops = copdisplay.list[currentcop][0];
3551 copl = copdisplay.list[currentcop][1];
3552 ps = pl = ZTWO_PADDR(dummysprite);
3553 mx = par->crsr.crsr_x-par->crsr.spot_x;
3554 my = par->crsr.crsr_y-par->crsr.spot_y;
3555 if (!(par->vmode & FB_VMODE_YWRAP)) {
3559 if (!is_blanked && cursorstate > 0 && par->crsr.height > 0 &&
3560 mx > -(short)par->crsr.width && mx < par->xres &&
3561 my > -(short)par->crsr.height && my < par->yres) {
3562 pl = ZTWO_PADDR(lofsprite);
3563 hs = par->diwstrt_h + (mx<<par->clk_shift) - 4;
3564 vs = par->diwstrt_v + (my<<par->line_shift);
3565 ve = vs + (par->crsr.height<<par->line_shift);
3566 if (par->bplcon0 & BPC0_LACE) {
3567 ps = ZTWO_PADDR(shfsprite);
3568 lofsprite[0] = spr2hw_pos(vs, hs);
3569 shfsprite[0] = spr2hw_pos(vs+1, hs);
3571 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3572 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve+1);
3573 pt = pl; pl = ps; ps = pt;
3575 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve+1);
3576 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve);
3579 lofsprite[0] = spr2hw_pos(vs, hs) | (IS_AGA && (par->fmode & FMODE_BSCAN2) ? 0x80 : 0);
3580 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3583 copl[cop_spr0ptrh].w[1] = highw(pl);
3584 copl[cop_spr0ptrl].w[1] = loww(pl);
3585 if (par->bplcon0 & BPC0_LACE) {
3586 cops[cop_spr0ptrh].w[1] = highw(ps);
3587 cops[cop_spr0ptrl].w[1] = loww(ps);
3593 * Initialise the Copper Initialisation List
3596 static void __init ami_init_copper(void)
3598 copins *cop = copdisplay.init;
3603 (cop++)->l = CMOVE(BPC0_COLOR | BPC0_SHRES | BPC0_ECSENA, bplcon0);
3604 (cop++)->l = CMOVE(0x0181, diwstrt);
3605 (cop++)->l = CMOVE(0x0281, diwstop);
3606 (cop++)->l = CMOVE(0x0000, diwhigh);
3608 (cop++)->l = CMOVE(BPC0_COLOR, bplcon0);
3609 p = ZTWO_PADDR(dummysprite);
3610 for (i = 0; i < 8; i++) {
3611 (cop++)->l = CMOVE(0, spr[i].pos);
3612 (cop++)->l = CMOVE(highw(p), sprpt[i]);
3613 (cop++)->l = CMOVE2(loww(p), sprpt[i]);
3616 (cop++)->l = CMOVE(IF_SETCLR | IF_COPER, intreq);
3617 copdisplay.wait = cop;
3619 (cop++)->l = CMOVE(0, copjmp2);
3622 custom.cop1lc = (u_short *)ZTWO_PADDR(copdisplay.init);
3626 static void ami_reinit_copper(void)
3628 struct amifb_par *par = ¤tpar;
3630 copdisplay.init[cip_bplcon0].w[1] = ~(BPC0_BPU3 | BPC0_BPU2 | BPC0_BPU1 | BPC0_BPU0) & par->bplcon0;
3631 copdisplay.wait->l = CWAIT(32, par->diwstrt_v-4);
3635 * Build the Copper List
3638 static void ami_build_copper(void)
3640 struct amifb_par *par = ¤tpar;
3641 copins *copl, *cops;
3644 currentcop = 1 - currentcop;
3646 copl = copdisplay.list[currentcop][1];
3648 (copl++)->l = CWAIT(0, 10);
3649 (copl++)->l = CMOVE(par->bplcon0, bplcon0);
3650 (copl++)->l = CMOVE(0, sprpt[0]);
3651 (copl++)->l = CMOVE2(0, sprpt[0]);
3653 if (par->bplcon0 & BPC0_LACE) {
3654 cops = copdisplay.list[currentcop][0];
3656 (cops++)->l = CWAIT(0, 10);
3657 (cops++)->l = CMOVE(par->bplcon0, bplcon0);
3658 (cops++)->l = CMOVE(0, sprpt[0]);
3659 (cops++)->l = CMOVE2(0, sprpt[0]);
3661 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v+1), diwstrt);
3662 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v+1), diwstop);
3663 (cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3664 (cops++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3666 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v+1,
3667 par->diwstop_h, par->diwstop_v+1), diwhigh);
3668 (cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3669 par->diwstop_h, par->diwstop_v), diwhigh);
3671 if (par->beamcon0 & BMC0_VARBEAMEN) {
3672 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3673 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt+1), vbstrt);
3674 (copl++)->l = CMOVE(vbstop2hw(par->vbstop+1), vbstop);
3675 (cops++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3676 (cops++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3677 (cops++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3681 p = ZTWO_PADDR(copdisplay.list[currentcop][0]);
3682 (copl++)->l = CMOVE(highw(p), cop2lc);
3683 (copl++)->l = CMOVE2(loww(p), cop2lc);
3684 p = ZTWO_PADDR(copdisplay.list[currentcop][1]);
3685 (cops++)->l = CMOVE(highw(p), cop2lc);
3686 (cops++)->l = CMOVE2(loww(p), cop2lc);
3687 copdisplay.rebuild[0] = cops;
3689 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3690 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3692 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3693 par->diwstop_h, par->diwstop_v), diwhigh);
3695 if (par->beamcon0 & BMC0_VARBEAMEN) {
3696 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3697 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3698 (copl++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3703 copdisplay.rebuild[1] = copl;
3706 ami_rebuild_copper();
3710 * Rebuild the Copper List
3712 * We only change the things that are not static
3715 static void ami_rebuild_copper(void)
3717 struct amifb_par *par = ¤tpar;
3718 copins *copl, *cops;
3719 u_short line, h_end1, h_end2;
3723 if (IS_AGA && maxfmode + par->clk_shift == 0)
3724 h_end1 = par->diwstrt_h-64;
3726 h_end1 = par->htotal-32;
3727 h_end2 = par->ddfstop+64;
3731 copl = copdisplay.rebuild[1];
3733 if (par->vmode & FB_VMODE_YWRAP) {
3734 if ((par->vyres-par->yoffset) != 1 || !mod2(par->diwstrt_v)) {
3735 if (par->yoffset > par->vyres-par->yres) {
3736 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3737 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3738 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3740 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 1;
3741 while (line >= 512) {
3742 (copl++)->l = CWAIT(h_end1, 510);
3745 if (line >= 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3746 (copl++)->l = CWAIT(h_end1, line);
3748 (copl++)->l = CWAIT(h_end2, line);
3749 p = par->bplpt0wrap;
3751 } else p = par->bplpt0wrap;
3753 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3754 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3755 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3759 if (par->bplcon0 & BPC0_LACE) {
3760 cops = copdisplay.rebuild[0];
3762 if (mod2(par->diwstrt_v))
3763 p -= par->next_line;
3765 p += par->next_line;
3766 if (par->vmode & FB_VMODE_YWRAP) {
3767 if ((par->vyres-par->yoffset) != 1 || mod2(par->diwstrt_v)) {
3768 if (par->yoffset > par->vyres-par->yres+1) {
3769 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3770 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3771 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3773 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 2;
3774 while (line >= 512) {
3775 (cops++)->l = CWAIT(h_end1, 510);
3778 if (line > 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3779 (cops++)->l = CWAIT(h_end1, line);
3781 (cops++)->l = CWAIT(h_end2, line);
3782 p = par->bplpt0wrap;
3783 if (mod2(par->diwstrt_v+par->vyres-par->yoffset))
3784 p -= par->next_line;
3786 p += par->next_line;
3788 } else p = par->bplpt0wrap - par->next_line;
3790 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3791 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3792 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3798 static void __exit amifb_exit(void)
3800 unregister_framebuffer(&fb_info);
3805 module_init(amifb_init);
3806 module_exit(amifb_exit);
3808 MODULE_LICENSE("GPL");