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/delay.h>
49 #include <linux/interrupt.h>
51 #include <linux/init.h>
52 #include <linux/ioport.h>
53 #include <linux/platform_device.h>
54 #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
216 the first pixel is output, so diwstrt_h = ddfstrt + 64 + 4 if you want
217 to display the first pixel on the line too. Increase diwstrt_h for
218 virtual screen panning.
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
222 be 1 more than htotal.
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
349 SHRES, 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
355 - ami_encode_var() calculates margins with a hsync of 5320 ns and a vsync
358 The settings for a NTSC compatible display are straightforward.
360 Note that in a strict sense the PAL and NTSC standards only define the
361 encoding of the color part (chrominance) of the video signal and don't say
362 anything about horizontal/vertical synchronization nor refresh rates.
367 *******************************************************************************/
371 * Custom Chipset Definitions
374 #define CUSTOM_OFS(fld) ((long)&((struct CUSTOM*)0)->fld)
377 * BPLCON0 -- Bitplane Control Register 0
380 #define BPC0_HIRES (0x8000)
381 #define BPC0_BPU2 (0x4000) /* Bit plane used count */
382 #define BPC0_BPU1 (0x2000)
383 #define BPC0_BPU0 (0x1000)
384 #define BPC0_HAM (0x0800) /* HAM mode */
385 #define BPC0_DPF (0x0400) /* Double playfield */
386 #define BPC0_COLOR (0x0200) /* Enable colorburst */
387 #define BPC0_GAUD (0x0100) /* Genlock audio enable */
388 #define BPC0_UHRES (0x0080) /* Ultrahi res enable */
389 #define BPC0_SHRES (0x0040) /* Super hi res mode */
390 #define BPC0_BYPASS (0x0020) /* Bypass LUT - AGA */
391 #define BPC0_BPU3 (0x0010) /* AGA */
392 #define BPC0_LPEN (0x0008) /* Light pen enable */
393 #define BPC0_LACE (0x0004) /* Interlace */
394 #define BPC0_ERSY (0x0002) /* External resync */
395 #define BPC0_ECSENA (0x0001) /* ECS enable */
398 * BPLCON2 -- Bitplane Control Register 2
401 #define BPC2_ZDBPSEL2 (0x4000) /* Bitplane to be used for ZD - AGA */
402 #define BPC2_ZDBPSEL1 (0x2000)
403 #define BPC2_ZDBPSEL0 (0x1000)
404 #define BPC2_ZDBPEN (0x0800) /* Enable ZD with ZDBPSELx - AGA */
405 #define BPC2_ZDCTEN (0x0400) /* Enable ZD with palette bit #31 - AGA */
406 #define BPC2_KILLEHB (0x0200) /* Kill EHB mode - AGA */
407 #define BPC2_RDRAM (0x0100) /* Color table accesses read, not write - AGA */
408 #define BPC2_SOGEN (0x0080) /* SOG output pin high - AGA */
409 #define BPC2_PF2PRI (0x0040) /* PF2 priority over PF1 */
410 #define BPC2_PF2P2 (0x0020) /* PF2 priority wrt sprites */
411 #define BPC2_PF2P1 (0x0010)
412 #define BPC2_PF2P0 (0x0008)
413 #define BPC2_PF1P2 (0x0004) /* ditto PF1 */
414 #define BPC2_PF1P1 (0x0002)
415 #define BPC2_PF1P0 (0x0001)
418 * BPLCON3 -- Bitplane Control Register 3 (AGA)
421 #define BPC3_BANK2 (0x8000) /* Bits to select color register bank */
422 #define BPC3_BANK1 (0x4000)
423 #define BPC3_BANK0 (0x2000)
424 #define BPC3_PF2OF2 (0x1000) /* Bits for color table offset when PF2 */
425 #define BPC3_PF2OF1 (0x0800)
426 #define BPC3_PF2OF0 (0x0400)
427 #define BPC3_LOCT (0x0200) /* Color register writes go to low bits */
428 #define BPC3_SPRES1 (0x0080) /* Sprite resolution bits */
429 #define BPC3_SPRES0 (0x0040)
430 #define BPC3_BRDRBLNK (0x0020) /* Border blanked? */
431 #define BPC3_BRDRTRAN (0x0010) /* Border transparent? */
432 #define BPC3_ZDCLKEN (0x0004) /* ZD pin is 14 MHz (HIRES) clock output */
433 #define BPC3_BRDRSPRT (0x0002) /* Sprites in border? */
434 #define BPC3_EXTBLKEN (0x0001) /* BLANK programmable */
437 * BPLCON4 -- Bitplane Control Register 4 (AGA)
440 #define BPC4_BPLAM7 (0x8000) /* bitplane color XOR field */
441 #define BPC4_BPLAM6 (0x4000)
442 #define BPC4_BPLAM5 (0x2000)
443 #define BPC4_BPLAM4 (0x1000)
444 #define BPC4_BPLAM3 (0x0800)
445 #define BPC4_BPLAM2 (0x0400)
446 #define BPC4_BPLAM1 (0x0200)
447 #define BPC4_BPLAM0 (0x0100)
448 #define BPC4_ESPRM7 (0x0080) /* 4 high bits for even sprite colors */
449 #define BPC4_ESPRM6 (0x0040)
450 #define BPC4_ESPRM5 (0x0020)
451 #define BPC4_ESPRM4 (0x0010)
452 #define BPC4_OSPRM7 (0x0008) /* 4 high bits for odd sprite colors */
453 #define BPC4_OSPRM6 (0x0004)
454 #define BPC4_OSPRM5 (0x0002)
455 #define BPC4_OSPRM4 (0x0001)
458 * BEAMCON0 -- Beam Control Register
461 #define BMC0_HARDDIS (0x4000) /* Disable hardware limits */
462 #define BMC0_LPENDIS (0x2000) /* Disable light pen latch */
463 #define BMC0_VARVBEN (0x1000) /* Enable variable vertical blank */
464 #define BMC0_LOLDIS (0x0800) /* Disable long/short line toggle */
465 #define BMC0_CSCBEN (0x0400) /* Composite sync/blank */
466 #define BMC0_VARVSYEN (0x0200) /* Enable variable vertical sync */
467 #define BMC0_VARHSYEN (0x0100) /* Enable variable horizontal sync */
468 #define BMC0_VARBEAMEN (0x0080) /* Enable variable beam counters */
469 #define BMC0_DUAL (0x0040) /* Enable alternate horizontal beam counter */
470 #define BMC0_PAL (0x0020) /* Set decodes for PAL */
471 #define BMC0_VARCSYEN (0x0010) /* Enable variable composite sync */
472 #define BMC0_BLANKEN (0x0008) /* Blank enable (no longer used on AGA) */
473 #define BMC0_CSYTRUE (0x0004) /* CSY polarity */
474 #define BMC0_VSYTRUE (0x0002) /* VSY polarity */
475 #define BMC0_HSYTRUE (0x0001) /* HSY polarity */
479 * FMODE -- Fetch Mode Control Register (AGA)
482 #define FMODE_SSCAN2 (0x8000) /* Sprite scan-doubling */
483 #define FMODE_BSCAN2 (0x4000) /* Use PF2 modulus every other line */
484 #define FMODE_SPAGEM (0x0008) /* Sprite page mode */
485 #define FMODE_SPR32 (0x0004) /* Sprite 32 bit fetch */
486 #define FMODE_BPAGEM (0x0002) /* Bitplane page mode */
487 #define FMODE_BPL32 (0x0001) /* Bitplane 32 bit fetch */
490 * Tags used to indicate a specific Pixel Clock
492 * clk_shift is the shift value to get the timings in 35 ns units
495 enum { TAG_SHRES, TAG_HIRES, TAG_LORES };
498 * Tags used to indicate the specific chipset
501 enum { TAG_OCS, TAG_ECS, TAG_AGA };
504 * Tags used to indicate the memory bandwidth
507 enum { TAG_FMODE_1, TAG_FMODE_2, TAG_FMODE_4 };
511 * Clock Definitions, Maximum Display Depth
513 * These depend on the E-Clock or the Chipset, so they are filled in
517 static u_long pixclock[3]; /* SHRES/HIRES/LORES: index = clk_shift */
518 static u_short maxdepth[3]; /* SHRES/HIRES/LORES: index = clk_shift */
519 static u_short maxfmode, chipset;
523 * Broadcast Video Timings
525 * Horizontal values are in 35 ns (SHRES) units
526 * Vertical values are in interlaced scanlines
529 #define PAL_DIWSTRT_H (360) /* PAL Window Limits */
530 #define PAL_DIWSTRT_V (48)
531 #define PAL_HTOTAL (1816)
532 #define PAL_VTOTAL (625)
534 #define NTSC_DIWSTRT_H (360) /* NTSC Window Limits */
535 #define NTSC_DIWSTRT_V (40)
536 #define NTSC_HTOTAL (1816)
537 #define NTSC_VTOTAL (525)
544 #define up2(v) (((v) + 1) & -2)
545 #define down2(v) ((v) & -2)
546 #define div2(v) ((v)>>1)
547 #define mod2(v) ((v) & 1)
549 #define up4(v) (((v) + 3) & -4)
550 #define down4(v) ((v) & -4)
551 #define mul4(v) ((v) << 2)
552 #define div4(v) ((v)>>2)
553 #define mod4(v) ((v) & 3)
555 #define up8(v) (((v) + 7) & -8)
556 #define down8(v) ((v) & -8)
557 #define div8(v) ((v)>>3)
558 #define mod8(v) ((v) & 7)
560 #define up16(v) (((v) + 15) & -16)
561 #define down16(v) ((v) & -16)
562 #define div16(v) ((v)>>4)
563 #define mod16(v) ((v) & 15)
565 #define up32(v) (((v) + 31) & -32)
566 #define down32(v) ((v) & -32)
567 #define div32(v) ((v)>>5)
568 #define mod32(v) ((v) & 31)
570 #define up64(v) (((v) + 63) & -64)
571 #define down64(v) ((v) & -64)
572 #define div64(v) ((v)>>6)
573 #define mod64(v) ((v) & 63)
575 #define upx(x, v) (((v) + (x) - 1) & -(x))
576 #define downx(x, v) ((v) & -(x))
577 #define modx(x, v) ((v) & ((x) - 1))
579 /* if x1 is not a constant, this macro won't make real sense :-) */
581 #define DIVUL(x1, x2) ({int res; asm("divul %1,%2,%3": "=d" (res): \
582 "d" (x2), "d" ((long)((x1) / 0x100000000ULL)), "0" ((long)(x1))); res;})
584 /* We know a bit about the numbers, so we can do it this way */
585 #define DIVUL(x1, x2) ((((long)((unsigned long long)x1 >> 8) / x2) << 8) + \
586 ((((long)((unsigned long long)x1 >> 8) % x2) << 8) / x2))
589 #define highw(x) ((u_long)(x)>>16 & 0xffff)
590 #define loww(x) ((u_long)(x) & 0xffff)
592 #define custom amiga_custom
594 #define VBlankOn() custom.intena = IF_SETCLR|IF_COPER
595 #define VBlankOff() custom.intena = IF_COPER
599 * Chip RAM we reserve for the Frame Buffer
601 * This defines the Maximum Virtual Screen Size
602 * (Setable per kernel options?)
605 #define VIDEOMEMSIZE_AGA_2M (1310720) /* AGA (2MB) : max 1280*1024*256 */
606 #define VIDEOMEMSIZE_AGA_1M (786432) /* AGA (1MB) : max 1024*768*256 */
607 #define VIDEOMEMSIZE_ECS_2M (655360) /* ECS (2MB) : max 1280*1024*16 */
608 #define VIDEOMEMSIZE_ECS_1M (393216) /* ECS (1MB) : max 1024*768*16 */
609 #define VIDEOMEMSIZE_OCS (262144) /* OCS : max ca. 800*600*16 */
611 #define SPRITEMEMSIZE (64 * 64 / 4) /* max 64*64*4 */
612 #define DUMMYSPRITEMEMSIZE (8)
613 static u_long spritememory;
615 #define CHIPRAM_SAFETY_LIMIT (16384)
617 static u_long videomemory;
620 * This is the earliest allowed start of fetching display data.
621 * Only if you really want no hardware cursor and audio,
622 * set this to 128, but let it better at 192
625 static u_long min_fstrt = 192;
627 #define assignchunk(name, type, ptr, size) \
629 (name) = (type)(ptr); \
635 * Copper Instructions
638 #define CMOVE(val, reg) (CUSTOM_OFS(reg) << 16 | (val))
639 #define CMOVE2(val, reg) ((CUSTOM_OFS(reg) + 2) << 16 | (val))
640 #define CWAIT(x, y) (((y) & 0x1fe) << 23 | ((x) & 0x7f0) << 13 | 0x0001fffe)
641 #define CEND (0xfffffffe)
649 static struct copdisplay {
656 static u_short currentcop = 0;
659 * Hardware Cursor API Definitions
660 * These used to be in linux/fb.h, but were preliminary and used by
664 #define FBIOGET_FCURSORINFO 0x4607
665 #define FBIOGET_VCURSORINFO 0x4608
666 #define FBIOPUT_VCURSORINFO 0x4609
667 #define FBIOGET_CURSORSTATE 0x460A
668 #define FBIOPUT_CURSORSTATE 0x460B
671 struct fb_fix_cursorinfo {
672 __u16 crsr_width; /* width and height of the cursor in */
673 __u16 crsr_height; /* pixels (zero if no cursor) */
674 __u16 crsr_xsize; /* cursor size in display pixels */
676 __u16 crsr_color1; /* colormap entry for cursor color1 */
677 __u16 crsr_color2; /* colormap entry for cursor color2 */
680 struct fb_var_cursorinfo {
685 __u8 data[1]; /* field with [height][width] */
688 struct fb_cursorstate {
694 #define FB_CURSOR_OFF 0
695 #define FB_CURSOR_ON 1
696 #define FB_CURSOR_FLASH 2
703 static int cursorrate = 20; /* Number of frames/flash toggle */
704 static u_short cursorstate = -1;
705 static u_short cursormode = FB_CURSOR_OFF;
707 static u_short *lofsprite, *shfsprite, *dummysprite;
713 static struct amifb_par {
717 int xres; /* vmode */
718 int yres; /* vmode */
719 int vxres; /* vmode */
720 int vyres; /* vmode */
721 int xoffset; /* vmode */
722 int yoffset; /* vmode */
723 u_short bpp; /* vmode */
724 u_short clk_shift; /* vmode */
725 u_short line_shift; /* vmode */
726 int vmode; /* vmode */
727 u_short diwstrt_h; /* vmode */
728 u_short diwstop_h; /* vmode */
729 u_short diwstrt_v; /* vmode */
730 u_short diwstop_v; /* vmode */
731 u_long next_line; /* modulo for next line */
732 u_long next_plane; /* modulo for next plane */
737 short crsr_x; /* movecursor */
738 short crsr_y; /* movecursor */
746 /* OCS Hardware Registers */
748 u_long bplpt0; /* vmode, pan (Note: physical address) */
749 u_long bplpt0wrap; /* vmode, pan (Note: physical address) */
754 u_short bplcon0; /* vmode */
755 u_short bplcon1; /* vmode */
756 u_short htotal; /* vmode */
757 u_short vtotal; /* vmode */
759 /* Additional ECS Hardware Registers */
761 u_short bplcon3; /* vmode */
762 u_short beamcon0; /* vmode */
763 u_short hsstrt; /* vmode */
764 u_short hsstop; /* vmode */
765 u_short hbstrt; /* vmode */
766 u_short hbstop; /* vmode */
767 u_short vsstrt; /* vmode */
768 u_short vsstop; /* vmode */
769 u_short vbstrt; /* vmode */
770 u_short vbstop; /* vmode */
771 u_short hcenter; /* vmode */
773 /* Additional AGA Hardware Registers */
775 u_short fmode; /* vmode */
779 static struct fb_info fb_info = {
782 .visual = FB_VISUAL_PSEUDOCOLOR,
783 .accel = FB_ACCEL_AMIGABLITT
789 * Saved color entry 0 so we can restore it when unblanking
792 static u_char red0, green0, blue0;
795 #if defined(CONFIG_FB_AMIGA_ECS)
796 static u_short ecs_palette[32];
801 * Latches for Display Changes during VBlank
804 static u_short do_vmode_full = 0; /* Change the Video Mode */
805 static u_short do_vmode_pan = 0; /* Update the Video Mode */
806 static short do_blank = 0; /* (Un)Blank the Screen (±1) */
807 static u_short do_cursor = 0; /* Move the Cursor */
814 static u_short is_blanked = 0; /* Screen is Blanked */
815 static u_short is_lace = 0; /* Screen is laced */
818 * Predefined Video Modes
822 static struct fb_videomode ami_modedb[] __initdata = {
825 * AmigaOS Video Modes
827 * If you change these, make sure to update DEFMODE_* as well!
831 /* 640x200, 15 kHz, 60 Hz (NTSC) */
832 "ntsc", 60, 640, 200, TAG_HIRES, 106, 86, 44, 16, 76, 2,
833 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
835 /* 640x400, 15 kHz, 60 Hz interlaced (NTSC) */
836 "ntsc-lace", 60, 640, 400, TAG_HIRES, 106, 86, 88, 33, 76, 4,
837 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
839 /* 640x256, 15 kHz, 50 Hz (PAL) */
840 "pal", 50, 640, 256, TAG_HIRES, 106, 86, 40, 14, 76, 2,
841 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
843 /* 640x512, 15 kHz, 50 Hz interlaced (PAL) */
844 "pal-lace", 50, 640, 512, TAG_HIRES, 106, 86, 80, 29, 76, 4,
845 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
847 /* 640x480, 29 kHz, 57 Hz */
848 "multiscan", 57, 640, 480, TAG_SHRES, 96, 112, 29, 8, 72, 8,
849 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
851 /* 640x960, 29 kHz, 57 Hz interlaced */
852 "multiscan-lace", 57, 640, 960, TAG_SHRES, 96, 112, 58, 16, 72,
854 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
856 /* 640x200, 15 kHz, 72 Hz */
857 "euro36", 72, 640, 200, TAG_HIRES, 92, 124, 6, 6, 52, 5,
858 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
860 /* 640x400, 15 kHz, 72 Hz interlaced */
861 "euro36-lace", 72, 640, 400, TAG_HIRES, 92, 124, 12, 12, 52,
863 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
865 /* 640x400, 29 kHz, 68 Hz */
866 "euro72", 68, 640, 400, TAG_SHRES, 164, 92, 9, 9, 80, 8,
867 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
869 /* 640x800, 29 kHz, 68 Hz interlaced */
870 "euro72-lace", 68, 640, 800, TAG_SHRES, 164, 92, 18, 18, 80,
872 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
874 /* 800x300, 23 kHz, 70 Hz */
875 "super72", 70, 800, 300, TAG_SHRES, 212, 140, 10, 11, 80, 7,
876 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
878 /* 800x600, 23 kHz, 70 Hz interlaced */
879 "super72-lace", 70, 800, 600, TAG_SHRES, 212, 140, 20, 22, 80,
881 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
883 /* 640x200, 27 kHz, 57 Hz doublescan */
884 "dblntsc", 57, 640, 200, TAG_SHRES, 196, 124, 18, 17, 80, 4,
885 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
887 /* 640x400, 27 kHz, 57 Hz */
888 "dblntsc-ff", 57, 640, 400, TAG_SHRES, 196, 124, 36, 35, 80, 7,
889 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
891 /* 640x800, 27 kHz, 57 Hz interlaced */
892 "dblntsc-lace", 57, 640, 800, TAG_SHRES, 196, 124, 72, 70, 80,
894 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
896 /* 640x256, 27 kHz, 47 Hz doublescan */
897 "dblpal", 47, 640, 256, TAG_SHRES, 196, 124, 14, 13, 80, 4,
898 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
900 /* 640x512, 27 kHz, 47 Hz */
901 "dblpal-ff", 47, 640, 512, TAG_SHRES, 196, 124, 28, 27, 80, 7,
902 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
904 /* 640x1024, 27 kHz, 47 Hz interlaced */
905 "dblpal-lace", 47, 640, 1024, TAG_SHRES, 196, 124, 56, 54, 80,
907 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
915 /* 640x480, 31 kHz, 60 Hz (VGA) */
916 "vga", 60, 640, 480, TAG_SHRES, 64, 96, 30, 9, 112, 2,
917 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
919 /* 640x400, 31 kHz, 70 Hz (VGA) */
920 "vga70", 70, 640, 400, TAG_SHRES, 64, 96, 35, 12, 112, 2,
921 FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT,
922 FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
929 * These modes don't work yet because there's no A2024 driver.
933 /* 1024x800, 10 Hz */
934 "a2024-10", 10, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
935 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
937 /* 1024x800, 15 Hz */
938 "a2024-15", 15, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
939 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
944 #define NUM_TOTAL_MODES ARRAY_SIZE(ami_modedb)
946 static char *mode_option __initdata = NULL;
947 static int round_down_bpp = 1; /* for mode probing */
954 #define DEFMODE_PAL 2 /* "pal" for PAL OCS/ECS */
955 #define DEFMODE_NTSC 0 /* "ntsc" for NTSC OCS/ECS */
956 #define DEFMODE_AMBER_PAL 3 /* "pal-lace" for flicker fixed PAL (A3000) */
957 #define DEFMODE_AMBER_NTSC 1 /* "ntsc-lace" for flicker fixed NTSC (A3000) */
958 #define DEFMODE_AGA 19 /* "vga70" for AGA */
961 static int amifb_ilbm = 0; /* interleaved or normal bitplanes */
962 static int amifb_inverse = 0;
966 * Macros for the conversion from real world values to hardware register
969 * This helps us to keep our attention on the real stuff...
971 * Hardware limits for AGA:
973 * parameter min max step
974 * --------- --- ---- ----
996 * Horizontal values are in 35 ns (SHRES) pixels
997 * Vertical values are in half scanlines
1000 /* bplcon1 (smooth scrolling) */
1002 #define hscroll2hw(hscroll) \
1003 (((hscroll) << 12 & 0x3000) | ((hscroll) << 8 & 0xc300) | \
1004 ((hscroll) << 4 & 0x0c00) | ((hscroll) << 2 & 0x00f0) | \
1005 ((hscroll)>>2 & 0x000f))
1007 /* diwstrt/diwstop/diwhigh (visible display window) */
1009 #define diwstrt2hw(diwstrt_h, diwstrt_v) \
1010 (((diwstrt_v) << 7 & 0xff00) | ((diwstrt_h)>>2 & 0x00ff))
1011 #define diwstop2hw(diwstop_h, diwstop_v) \
1012 (((diwstop_v) << 7 & 0xff00) | ((diwstop_h)>>2 & 0x00ff))
1013 #define diwhigh2hw(diwstrt_h, diwstrt_v, diwstop_h, diwstop_v) \
1014 (((diwstop_h) << 3 & 0x2000) | ((diwstop_h) << 11 & 0x1800) | \
1015 ((diwstop_v)>>1 & 0x0700) | ((diwstrt_h)>>5 & 0x0020) | \
1016 ((diwstrt_h) << 3 & 0x0018) | ((diwstrt_v)>>9 & 0x0007))
1018 /* ddfstrt/ddfstop (display DMA) */
1020 #define ddfstrt2hw(ddfstrt) div8(ddfstrt)
1021 #define ddfstop2hw(ddfstop) div8(ddfstop)
1023 /* hsstrt/hsstop/htotal/vsstrt/vsstop/vtotal/hcenter (sync timings) */
1025 #define hsstrt2hw(hsstrt) (div8(hsstrt))
1026 #define hsstop2hw(hsstop) (div8(hsstop))
1027 #define htotal2hw(htotal) (div8(htotal) - 1)
1028 #define vsstrt2hw(vsstrt) (div2(vsstrt))
1029 #define vsstop2hw(vsstop) (div2(vsstop))
1030 #define vtotal2hw(vtotal) (div2(vtotal) - 1)
1031 #define hcenter2hw(htotal) (div8(htotal))
1033 /* hbstrt/hbstop/vbstrt/vbstop (blanking timings) */
1035 #define hbstrt2hw(hbstrt) (((hbstrt) << 8 & 0x0700) | ((hbstrt)>>3 & 0x00ff))
1036 #define hbstop2hw(hbstop) (((hbstop) << 8 & 0x0700) | ((hbstop)>>3 & 0x00ff))
1037 #define vbstrt2hw(vbstrt) (div2(vbstrt))
1038 #define vbstop2hw(vbstop) (div2(vbstop))
1042 #define rgb2hw8_high(red, green, blue) \
1043 (((red & 0xf0) << 4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1044 #define rgb2hw8_low(red, green, blue) \
1045 (((red & 0x0f) << 8) | ((green & 0x0f) << 4) | (blue & 0x0f))
1046 #define rgb2hw4(red, green, blue) \
1047 (((red & 0xf0) << 4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1048 #define rgb2hw2(red, green, blue) \
1049 (((red & 0xc0) << 4) | (green & 0xc0) | ((blue & 0xc0)>>4))
1051 /* sprpos/sprctl (sprite positioning) */
1053 #define spr2hw_pos(start_v, start_h) \
1054 (((start_v) << 7 & 0xff00) | ((start_h)>>3 & 0x00ff))
1055 #define spr2hw_ctl(start_v, start_h, stop_v) \
1056 (((stop_v) << 7 & 0xff00) | ((start_v)>>4 & 0x0040) | \
1057 ((stop_v)>>5 & 0x0020) | ((start_h) << 3 & 0x0018) | \
1058 ((start_v)>>7 & 0x0004) | ((stop_v)>>8 & 0x0002) | \
1059 ((start_h)>>2 & 0x0001))
1061 /* get current vertical position of beam */
1062 #define get_vbpos() ((u_short)((*(u_long volatile *)&custom.vposr >> 7) & 0xffe))
1065 * Copper Initialisation List
1068 #define COPINITSIZE (sizeof(copins) * 40)
1075 * Long Frame/Short Frame Copper List
1076 * Don't change the order, build_copper()/rebuild_copper() rely on this
1079 #define COPLISTSIZE (sizeof(copins) * 64)
1082 cop_wait, cop_bplcon0,
1083 cop_spr0ptrh, cop_spr0ptrl,
1084 cop_diwstrt, cop_diwstop,
1089 * Pixel modes for Bitplanes and Sprites
1092 static u_short bplpixmode[3] = {
1093 BPC0_SHRES, /* 35 ns */
1094 BPC0_HIRES, /* 70 ns */
1098 static u_short sprpixmode[3] = {
1099 BPC3_SPRES1 | BPC3_SPRES0, /* 35 ns */
1100 BPC3_SPRES1, /* 70 ns */
1101 BPC3_SPRES0 /* 140 ns */
1105 * Fetch modes for Bitplanes and Sprites
1108 static u_short bplfetchmode[3] = {
1110 FMODE_BPL32, /* 2x */
1111 FMODE_BPAGEM | FMODE_BPL32 /* 4x */
1114 static u_short sprfetchmode[3] = {
1116 FMODE_SPR32, /* 2x */
1117 FMODE_SPAGEM | FMODE_SPR32 /* 4x */
1121 /* --------------------------- Hardware routines --------------------------- */
1124 * Get the video params out of `var'. If a value doesn't fit, round
1125 * it up, if it's too big, return -EINVAL.
1128 static int ami_decode_var(struct fb_var_screeninfo *var,
1129 struct amifb_par *par)
1131 u_short clk_shift, line_shift;
1132 u_long maxfetchstop, fstrt, fsize, fconst, xres_n, yres_n;
1133 u_int htotal, vtotal;
1136 * Find a matching Pixel Clock
1139 for (clk_shift = TAG_SHRES; clk_shift <= TAG_LORES; clk_shift++)
1140 if (var->pixclock <= pixclock[clk_shift])
1142 if (clk_shift > TAG_LORES) {
1143 DPRINTK("pixclock too high\n");
1146 par->clk_shift = clk_shift;
1149 * Check the Geometry Values
1152 if ((par->xres = var->xres) < 64)
1154 if ((par->yres = var->yres) < 64)
1156 if ((par->vxres = var->xres_virtual) < par->xres)
1157 par->vxres = par->xres;
1158 if ((par->vyres = var->yres_virtual) < par->yres)
1159 par->vyres = par->yres;
1161 par->bpp = var->bits_per_pixel;
1165 if (par->bpp > maxdepth[clk_shift]) {
1166 if (round_down_bpp && maxdepth[clk_shift])
1167 par->bpp = maxdepth[clk_shift];
1169 DPRINTK("invalid bpp\n");
1173 } else if (var->nonstd == FB_NONSTD_HAM) {
1176 if (par->bpp != 6) {
1179 if (par->bpp != 8 || !IS_AGA) {
1180 DPRINTK("invalid bpp for ham mode\n");
1185 DPRINTK("unknown nonstd mode\n");
1190 * FB_VMODE_SMOOTH_XPAN will be cleared, if one of the folloing
1191 * checks failed and smooth scrolling is not possible
1194 par->vmode = var->vmode | FB_VMODE_SMOOTH_XPAN;
1195 switch (par->vmode & FB_VMODE_MASK) {
1196 case FB_VMODE_INTERLACED:
1199 case FB_VMODE_NONINTERLACED:
1202 case FB_VMODE_DOUBLE:
1204 DPRINTK("double mode only possible with aga\n");
1210 DPRINTK("unknown video mode\n");
1214 par->line_shift = line_shift;
1217 * Vertical and Horizontal Timings
1220 xres_n = par->xres << clk_shift;
1221 yres_n = par->yres << line_shift;
1222 par->htotal = down8((var->left_margin + par->xres + var->right_margin +
1223 var->hsync_len) << clk_shift);
1225 down2(((var->upper_margin + par->yres + var->lower_margin +
1226 var->vsync_len) << line_shift) + 1);
1229 par->bplcon3 = sprpixmode[clk_shift];
1232 if (var->sync & FB_SYNC_BROADCAST) {
1233 par->diwstop_h = par->htotal -
1234 ((var->right_margin - var->hsync_len) << clk_shift);
1236 par->diwstop_h += mod4(var->hsync_len);
1238 par->diwstop_h = down4(par->diwstop_h);
1240 par->diwstrt_h = par->diwstop_h - xres_n;
1241 par->diwstop_v = par->vtotal -
1242 ((var->lower_margin - var->vsync_len) << line_shift);
1243 par->diwstrt_v = par->diwstop_v - yres_n;
1244 if (par->diwstop_h >= par->htotal + 8) {
1245 DPRINTK("invalid diwstop_h\n");
1248 if (par->diwstop_v > par->vtotal) {
1249 DPRINTK("invalid diwstop_v\n");
1254 /* Initialize sync with some reasonable values for pwrsave */
1265 if (par->vtotal > (PAL_VTOTAL + NTSC_VTOTAL) / 2) {
1266 /* PAL video mode */
1267 if (par->htotal != PAL_HTOTAL) {
1268 DPRINTK("htotal invalid for pal\n");
1271 if (par->diwstrt_h < PAL_DIWSTRT_H) {
1272 DPRINTK("diwstrt_h too low for pal\n");
1275 if (par->diwstrt_v < PAL_DIWSTRT_V) {
1276 DPRINTK("diwstrt_v too low for pal\n");
1279 htotal = PAL_HTOTAL>>clk_shift;
1280 vtotal = PAL_VTOTAL>>1;
1282 par->beamcon0 = BMC0_PAL;
1283 par->bplcon3 |= BPC3_BRDRBLNK;
1284 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
1285 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
1286 par->beamcon0 = BMC0_PAL;
1288 } else if (amiga_vblank != 50) {
1289 DPRINTK("pal not supported by this chipset\n");
1294 * In the AGA chipset seems to be hardware bug with BPC3_BRDRBLNK
1295 * and NTSC activated, so than better let diwstop_h <= 1812
1297 if (par->htotal != NTSC_HTOTAL) {
1298 DPRINTK("htotal invalid for ntsc\n");
1301 if (par->diwstrt_h < NTSC_DIWSTRT_H) {
1302 DPRINTK("diwstrt_h too low for ntsc\n");
1305 if (par->diwstrt_v < NTSC_DIWSTRT_V) {
1306 DPRINTK("diwstrt_v too low for ntsc\n");
1309 htotal = NTSC_HTOTAL>>clk_shift;
1310 vtotal = NTSC_VTOTAL>>1;
1313 par->bplcon3 |= BPC3_BRDRBLNK;
1314 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
1315 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
1318 } else if (amiga_vblank != 60) {
1319 DPRINTK("ntsc not supported by this chipset\n");
1324 if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
1325 par->diwstrt_v >= 512 || par->diwstop_v < 256) {
1326 DPRINTK("invalid position for display on ocs\n");
1330 } else if (!IS_OCS) {
1331 /* Programmable video mode */
1332 par->hsstrt = var->right_margin << clk_shift;
1333 par->hsstop = (var->right_margin + var->hsync_len) << clk_shift;
1334 par->diwstop_h = par->htotal - mod8(par->hsstrt) + 8 - (1 << clk_shift);
1336 par->diwstop_h = down4(par->diwstop_h) - 16;
1337 par->diwstrt_h = par->diwstop_h - xres_n;
1338 par->hbstop = par->diwstrt_h + 4;
1339 par->hbstrt = par->diwstop_h + 4;
1340 if (par->hbstrt >= par->htotal + 8)
1341 par->hbstrt -= par->htotal;
1342 par->hcenter = par->hsstrt + (par->htotal >> 1);
1343 par->vsstrt = var->lower_margin << line_shift;
1344 par->vsstop = (var->lower_margin + var->vsync_len) << line_shift;
1345 par->diwstop_v = par->vtotal;
1346 if ((par->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
1347 par->diwstop_v -= 2;
1348 par->diwstrt_v = par->diwstop_v - yres_n;
1349 par->vbstop = par->diwstrt_v - 2;
1350 par->vbstrt = par->diwstop_v - 2;
1351 if (par->vtotal > 2048) {
1352 DPRINTK("vtotal too high\n");
1355 if (par->htotal > 2048) {
1356 DPRINTK("htotal too high\n");
1359 par->bplcon3 |= BPC3_EXTBLKEN;
1360 par->beamcon0 = BMC0_HARDDIS | BMC0_VARVBEN | BMC0_LOLDIS |
1361 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARBEAMEN |
1362 BMC0_PAL | BMC0_VARCSYEN;
1363 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
1364 par->beamcon0 |= BMC0_HSYTRUE;
1365 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
1366 par->beamcon0 |= BMC0_VSYTRUE;
1367 if (var->sync & FB_SYNC_COMP_HIGH_ACT)
1368 par->beamcon0 |= BMC0_CSYTRUE;
1369 htotal = par->htotal>>clk_shift;
1370 vtotal = par->vtotal>>1;
1372 DPRINTK("only broadcast modes possible for ocs\n");
1377 * Checking the DMA timing
1380 fconst = 16 << maxfmode << clk_shift;
1383 * smallest window start value without turn off other dma cycles
1384 * than sprite1-7, unless you change min_fstrt
1388 fsize = ((maxfmode + clk_shift <= 1) ? fconst : 64);
1389 fstrt = downx(fconst, par->diwstrt_h - 4) - fsize;
1390 if (fstrt < min_fstrt) {
1391 DPRINTK("fetch start too low\n");
1396 * smallest window start value where smooth scrolling is possible
1399 fstrt = downx(fconst, par->diwstrt_h - fconst + (1 << clk_shift) - 4) -
1401 if (fstrt < min_fstrt)
1402 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
1404 maxfetchstop = down16(par->htotal - 80);
1406 fstrt = downx(fconst, par->diwstrt_h - 4) - 64 - fconst;
1407 fsize = upx(fconst, xres_n +
1408 modx(fconst, downx(1 << clk_shift, par->diwstrt_h - 4)));
1409 if (fstrt + fsize > maxfetchstop)
1410 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
1412 fsize = upx(fconst, xres_n);
1413 if (fstrt + fsize > maxfetchstop) {
1414 DPRINTK("fetch stop too high\n");
1418 if (maxfmode + clk_shift <= 1) {
1419 fsize = up64(xres_n + fconst - 1);
1420 if (min_fstrt + fsize - 64 > maxfetchstop)
1421 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
1423 fsize = up64(xres_n);
1424 if (min_fstrt + fsize - 64 > maxfetchstop) {
1425 DPRINTK("fetch size too high\n");
1434 * Check if there is enough time to update the bitplane pointers for ywrap
1437 if (par->htotal - fsize - 64 < par->bpp * 64)
1438 par->vmode &= ~FB_VMODE_YWRAP;
1441 * Bitplane calculations and check the Memory Requirements
1445 par->next_plane = div8(upx(16 << maxfmode, par->vxres));
1446 par->next_line = par->bpp * par->next_plane;
1447 if (par->next_line * par->vyres > fb_info.fix.smem_len) {
1448 DPRINTK("too few video mem\n");
1452 par->next_line = div8(upx(16 << maxfmode, par->vxres));
1453 par->next_plane = par->vyres * par->next_line;
1454 if (par->next_plane * par->bpp > fb_info.fix.smem_len) {
1455 DPRINTK("too few video mem\n");
1461 * Hardware Register Values
1464 par->bplcon0 = BPC0_COLOR | bplpixmode[clk_shift];
1466 par->bplcon0 |= BPC0_ECSENA;
1468 par->bplcon0 |= BPC0_BPU3;
1470 par->bplcon0 |= par->bpp << 12;
1471 if (var->nonstd == FB_NONSTD_HAM)
1472 par->bplcon0 |= BPC0_HAM;
1473 if (var->sync & FB_SYNC_EXT)
1474 par->bplcon0 |= BPC0_ERSY;
1477 par->fmode = bplfetchmode[maxfmode];
1479 switch (par->vmode & FB_VMODE_MASK) {
1480 case FB_VMODE_INTERLACED:
1481 par->bplcon0 |= BPC0_LACE;
1483 case FB_VMODE_DOUBLE:
1485 par->fmode |= FMODE_SSCAN2 | FMODE_BSCAN2;
1489 if (!((par->vmode ^ var->vmode) & FB_VMODE_YWRAP)) {
1490 par->xoffset = var->xoffset;
1491 par->yoffset = var->yoffset;
1492 if (par->vmode & FB_VMODE_YWRAP) {
1493 if (par->xoffset || par->yoffset < 0 ||
1494 par->yoffset >= par->vyres)
1495 par->xoffset = par->yoffset = 0;
1497 if (par->xoffset < 0 ||
1498 par->xoffset > upx(16 << maxfmode, par->vxres - par->xres) ||
1499 par->yoffset < 0 || par->yoffset > par->vyres - par->yres)
1500 par->xoffset = par->yoffset = 0;
1503 par->xoffset = par->yoffset = 0;
1505 par->crsr.crsr_x = par->crsr.crsr_y = 0;
1506 par->crsr.spot_x = par->crsr.spot_y = 0;
1507 par->crsr.height = par->crsr.width = 0;
1513 * Fill the `var' structure based on the values in `par' and maybe
1514 * other values read out of the hardware.
1517 static int ami_encode_var(struct fb_var_screeninfo *var,
1518 struct amifb_par *par)
1520 u_short clk_shift, line_shift;
1522 memset(var, 0, sizeof(struct fb_var_screeninfo));
1524 clk_shift = par->clk_shift;
1525 line_shift = par->line_shift;
1527 var->xres = par->xres;
1528 var->yres = par->yres;
1529 var->xres_virtual = par->vxres;
1530 var->yres_virtual = par->vyres;
1531 var->xoffset = par->xoffset;
1532 var->yoffset = par->yoffset;
1534 var->bits_per_pixel = par->bpp;
1537 var->red.offset = 0;
1538 var->red.msb_right = 0;
1539 var->red.length = par->bpp;
1540 if (par->bplcon0 & BPC0_HAM)
1541 var->red.length -= 2;
1542 var->blue = var->green = var->red;
1543 var->transp.offset = 0;
1544 var->transp.length = 0;
1545 var->transp.msb_right = 0;
1547 if (par->bplcon0 & BPC0_HAM)
1548 var->nonstd = FB_NONSTD_HAM;
1556 var->pixclock = pixclock[clk_shift];
1558 if (IS_AGA && par->fmode & FMODE_BSCAN2)
1559 var->vmode = FB_VMODE_DOUBLE;
1560 else if (par->bplcon0 & BPC0_LACE)
1561 var->vmode = FB_VMODE_INTERLACED;
1563 var->vmode = FB_VMODE_NONINTERLACED;
1565 if (!IS_OCS && par->beamcon0 & BMC0_VARBEAMEN) {
1566 var->hsync_len = (par->hsstop - par->hsstrt)>>clk_shift;
1567 var->right_margin = par->hsstrt>>clk_shift;
1568 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
1569 var->vsync_len = (par->vsstop - par->vsstrt)>>line_shift;
1570 var->lower_margin = par->vsstrt>>line_shift;
1571 var->upper_margin = (par->vtotal>>line_shift) - var->yres - var->lower_margin - var->vsync_len;
1573 if (par->beamcon0 & BMC0_HSYTRUE)
1574 var->sync |= FB_SYNC_HOR_HIGH_ACT;
1575 if (par->beamcon0 & BMC0_VSYTRUE)
1576 var->sync |= FB_SYNC_VERT_HIGH_ACT;
1577 if (par->beamcon0 & BMC0_CSYTRUE)
1578 var->sync |= FB_SYNC_COMP_HIGH_ACT;
1580 var->sync = FB_SYNC_BROADCAST;
1581 var->hsync_len = (152>>clk_shift) + mod4(par->diwstop_h);
1582 var->right_margin = ((par->htotal - down4(par->diwstop_h))>>clk_shift) + var->hsync_len;
1583 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
1584 var->vsync_len = 4>>line_shift;
1585 var->lower_margin = ((par->vtotal - par->diwstop_v)>>line_shift) + var->vsync_len;
1586 var->upper_margin = (((par->vtotal - 2)>>line_shift) + 1) - var->yres -
1587 var->lower_margin - var->vsync_len;
1590 if (par->bplcon0 & BPC0_ERSY)
1591 var->sync |= FB_SYNC_EXT;
1592 if (par->vmode & FB_VMODE_YWRAP)
1593 var->vmode |= FB_VMODE_YWRAP;
1603 static int ami_update_par(void)
1605 struct amifb_par *par = ¤tpar;
1606 short clk_shift, vshift, fstrt, fsize, fstop, fconst, shift, move, mod;
1608 clk_shift = par->clk_shift;
1610 if (!(par->vmode & FB_VMODE_SMOOTH_XPAN))
1611 par->xoffset = upx(16 << maxfmode, par->xoffset);
1613 fconst = 16 << maxfmode << clk_shift;
1614 vshift = modx(16 << maxfmode, par->xoffset);
1615 fstrt = par->diwstrt_h - (vshift << clk_shift) - 4;
1616 fsize = (par->xres + vshift) << clk_shift;
1617 shift = modx(fconst, fstrt);
1618 move = downx(2 << maxfmode, div8(par->xoffset));
1619 if (maxfmode + clk_shift > 1) {
1620 fstrt = downx(fconst, fstrt) - 64;
1621 fsize = upx(fconst, fsize);
1622 fstop = fstrt + fsize - fconst;
1624 mod = fstrt = downx(fconst, fstrt) - fconst;
1625 fstop = fstrt + upx(fconst, fsize) - 64;
1626 fsize = up64(fsize);
1627 fstrt = fstop - fsize + 64;
1628 if (fstrt < min_fstrt) {
1629 fstop += min_fstrt - fstrt;
1632 move = move - div8((mod - fstrt)>>clk_shift);
1634 mod = par->next_line - div8(fsize>>clk_shift);
1635 par->ddfstrt = fstrt;
1636 par->ddfstop = fstop;
1637 par->bplcon1 = hscroll2hw(shift);
1639 if (par->bplcon0 & BPC0_LACE)
1640 par->bpl2mod += par->next_line;
1641 if (IS_AGA && (par->fmode & FMODE_BSCAN2))
1642 par->bpl1mod = -div8(fsize>>clk_shift);
1644 par->bpl1mod = par->bpl2mod;
1647 par->bplpt0 = fb_info.fix.smem_start +
1648 par->next_line * par->yoffset + move;
1649 if (par->vmode & FB_VMODE_YWRAP) {
1650 if (par->yoffset > par->vyres - par->yres) {
1651 par->bplpt0wrap = fb_info.fix.smem_start + move;
1652 if (par->bplcon0 & BPC0_LACE &&
1653 mod2(par->diwstrt_v + par->vyres -
1655 par->bplpt0wrap += par->next_line;
1659 par->bplpt0 = fb_info.fix.smem_start + move;
1661 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v))
1662 par->bplpt0 += par->next_line;
1669 * Pan or Wrap the Display
1671 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1675 static void ami_pan_var(struct fb_var_screeninfo *var)
1677 struct amifb_par *par = ¤tpar;
1679 par->xoffset = var->xoffset;
1680 par->yoffset = var->yoffset;
1681 if (var->vmode & FB_VMODE_YWRAP)
1682 par->vmode |= FB_VMODE_YWRAP;
1684 par->vmode &= ~FB_VMODE_YWRAP;
1692 static void ami_update_display(void)
1694 struct amifb_par *par = ¤tpar;
1696 custom.bplcon1 = par->bplcon1;
1697 custom.bpl1mod = par->bpl1mod;
1698 custom.bpl2mod = par->bpl2mod;
1699 custom.ddfstrt = ddfstrt2hw(par->ddfstrt);
1700 custom.ddfstop = ddfstop2hw(par->ddfstop);
1704 * Change the video mode (called by VBlank interrupt)
1707 static void ami_init_display(void)
1709 struct amifb_par *par = ¤tpar;
1712 custom.bplcon0 = par->bplcon0 & ~BPC0_LACE;
1713 custom.bplcon2 = (IS_OCS ? 0 : BPC2_KILLEHB) | BPC2_PF2P2 | BPC2_PF1P2;
1715 custom.bplcon3 = par->bplcon3;
1717 custom.bplcon4 = BPC4_ESPRM4 | BPC4_OSPRM4;
1718 if (par->beamcon0 & BMC0_VARBEAMEN) {
1719 custom.htotal = htotal2hw(par->htotal);
1720 custom.hbstrt = hbstrt2hw(par->hbstrt);
1721 custom.hbstop = hbstop2hw(par->hbstop);
1722 custom.hsstrt = hsstrt2hw(par->hsstrt);
1723 custom.hsstop = hsstop2hw(par->hsstop);
1724 custom.hcenter = hcenter2hw(par->hcenter);
1725 custom.vtotal = vtotal2hw(par->vtotal);
1726 custom.vbstrt = vbstrt2hw(par->vbstrt);
1727 custom.vbstop = vbstop2hw(par->vbstop);
1728 custom.vsstrt = vsstrt2hw(par->vsstrt);
1729 custom.vsstop = vsstop2hw(par->vsstop);
1732 if (!IS_OCS || par->hsstop)
1733 custom.beamcon0 = par->beamcon0;
1735 custom.fmode = par->fmode;
1738 * The minimum period for audio depends on htotal
1741 amiga_audio_min_period = div16(par->htotal);
1743 is_lace = par->bplcon0 & BPC0_LACE ? 1 : 0;
1746 i = custom.vposr >> 15;
1748 custom.vposw = custom.vposr | 0x8000;
1753 custom.vposw = custom.vposr | 0x8000;
1755 custom.cop2lc = (u_short *)ZTWO_PADDR(copdisplay.list[currentcop][i]);
1759 * (Un)Blank the screen (called by VBlank interrupt)
1762 static void ami_do_blank(void)
1764 struct amifb_par *par = ¤tpar;
1765 #if defined(CONFIG_FB_AMIGA_AGA)
1766 u_short bplcon3 = par->bplcon3;
1768 u_char red, green, blue;
1771 custom.dmacon = DMAF_RASTER | DMAF_SPRITE;
1772 red = green = blue = 0;
1773 if (!IS_OCS && do_blank > 1) {
1775 case FB_BLANK_VSYNC_SUSPEND:
1776 custom.hsstrt = hsstrt2hw(par->hsstrt);
1777 custom.hsstop = hsstop2hw(par->hsstop);
1778 custom.vsstrt = vsstrt2hw(par->vtotal + 4);
1779 custom.vsstop = vsstop2hw(par->vtotal + 4);
1781 case FB_BLANK_HSYNC_SUSPEND:
1782 custom.hsstrt = hsstrt2hw(par->htotal + 16);
1783 custom.hsstop = hsstop2hw(par->htotal + 16);
1784 custom.vsstrt = vsstrt2hw(par->vsstrt);
1785 custom.vsstop = vsstrt2hw(par->vsstop);
1787 case FB_BLANK_POWERDOWN:
1788 custom.hsstrt = hsstrt2hw(par->htotal + 16);
1789 custom.hsstop = hsstop2hw(par->htotal + 16);
1790 custom.vsstrt = vsstrt2hw(par->vtotal + 4);
1791 custom.vsstop = vsstop2hw(par->vtotal + 4);
1794 if (!(par->beamcon0 & BMC0_VARBEAMEN)) {
1795 custom.htotal = htotal2hw(par->htotal);
1796 custom.vtotal = vtotal2hw(par->vtotal);
1797 custom.beamcon0 = BMC0_HARDDIS | BMC0_VARBEAMEN |
1798 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARCSYEN;
1802 custom.dmacon = DMAF_SETCLR | DMAF_RASTER | DMAF_SPRITE;
1807 custom.hsstrt = hsstrt2hw(par->hsstrt);
1808 custom.hsstop = hsstop2hw(par->hsstop);
1809 custom.vsstrt = vsstrt2hw(par->vsstrt);
1810 custom.vsstop = vsstop2hw(par->vsstop);
1811 custom.beamcon0 = par->beamcon0;
1814 #if defined(CONFIG_FB_AMIGA_AGA)
1816 custom.bplcon3 = bplcon3;
1817 custom.color[0] = rgb2hw8_high(red, green, blue);
1818 custom.bplcon3 = bplcon3 | BPC3_LOCT;
1819 custom.color[0] = rgb2hw8_low(red, green, blue);
1820 custom.bplcon3 = bplcon3;
1823 #if defined(CONFIG_FB_AMIGA_ECS)
1824 if (par->bplcon0 & BPC0_SHRES) {
1825 u_short color, mask;
1829 color = rgb2hw2(red, green, blue);
1830 for (i = 12; i >= 0; i -= 4)
1831 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
1832 mask <<= 2; color >>= 2;
1833 for (i = 3; i >= 0; i--)
1834 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
1837 custom.color[0] = rgb2hw4(red, green, blue);
1838 is_blanked = do_blank > 0 ? do_blank : 0;
1841 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix)
1843 struct amifb_par *par = ¤tpar;
1845 fix->crsr_width = fix->crsr_xsize = par->crsr.width;
1846 fix->crsr_height = fix->crsr_ysize = par->crsr.height;
1847 fix->crsr_color1 = 17;
1848 fix->crsr_color2 = 18;
1852 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
1854 struct amifb_par *par = ¤tpar;
1855 register u_short *lspr, *sspr;
1857 register u_long datawords asm ("d2");
1859 register u_long datawords;
1861 register short delta;
1862 register u_char color;
1863 short height, width, bits, words;
1866 size = par->crsr.height * par->crsr.width;
1867 alloc = var->height * var->width;
1868 var->height = par->crsr.height;
1869 var->width = par->crsr.width;
1870 var->xspot = par->crsr.spot_x;
1871 var->yspot = par->crsr.spot_y;
1872 if (size > var->height * var->width)
1873 return -ENAMETOOLONG;
1874 if (!access_ok(VERIFY_WRITE, data, size))
1876 delta = 1 << par->crsr.fmode;
1877 lspr = lofsprite + (delta << 1);
1878 if (par->bplcon0 & BPC0_LACE)
1879 sspr = shfsprite + (delta << 1);
1882 for (height = (short)var->height - 1; height >= 0; height--) {
1883 bits = 0; words = delta; datawords = 0;
1884 for (width = (short)var->width - 1; width >= 0; width--) {
1888 asm volatile ("movew %1@(%3:w:2),%0 ; swap %0 ; movew %1@+,%0"
1889 : "=d" (datawords), "=a" (lspr) : "1" (lspr), "d" (delta));
1891 datawords = (*(lspr + delta) << 16) | (*lspr++);
1897 "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; "
1898 "swap %1 ; lslw #1,%1 ; roxlb #1,%0"
1899 : "=d" (color), "=d" (datawords) : "1" (datawords));
1901 color = (((datawords >> 30) & 2)
1902 | ((datawords >> 15) & 1));
1905 put_user(color, data++);
1910 while (--words >= 0)
1913 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
1914 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
1918 u_short *tmp = lspr;
1927 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
1929 struct amifb_par *par = ¤tpar;
1930 register u_short *lspr, *sspr;
1932 register u_long datawords asm ("d2");
1934 register u_long datawords;
1936 register short delta;
1938 short height, width, bits, words;
1942 else if (var->width <= 16)
1943 fmode = TAG_FMODE_1;
1944 else if (var->width <= 32)
1945 fmode = TAG_FMODE_2;
1946 else if (var->width <= 64)
1947 fmode = TAG_FMODE_4;
1950 if (fmode > maxfmode)
1954 if (!access_ok(VERIFY_READ, data, var->width * var->height))
1957 lofsprite = shfsprite = (u_short *)spritememory;
1958 lspr = lofsprite + (delta << 1);
1959 if (par->bplcon0 & BPC0_LACE) {
1960 if (((var->height + 4) << fmode << 2) > SPRITEMEMSIZE)
1962 memset(lspr, 0, (var->height + 4) << fmode << 2);
1963 shfsprite += ((var->height + 5)&-2) << fmode;
1964 sspr = shfsprite + (delta << 1);
1966 if (((var->height + 2) << fmode << 2) > SPRITEMEMSIZE)
1968 memset(lspr, 0, (var->height + 2) << fmode << 2);
1971 for (height = (short)var->height - 1; height >= 0; height--) {
1972 bits = 16; words = delta; datawords = 0;
1973 for (width = (short)var->width - 1; width >= 0; width--) {
1974 unsigned long tdata = 0;
1975 get_user(tdata, data);
1979 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0 ; "
1980 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0"
1982 : "0" (datawords), "d" (tdata));
1984 datawords = ((datawords << 1) & 0xfffefffe);
1985 datawords |= tdata & 1;
1986 datawords |= (tdata & 2) << (16 - 1);
1991 asm volatile ("swap %2 ; movew %2,%0@(%3:w:2) ; swap %2 ; movew %2,%0@+"
1992 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta));
1994 *(lspr + delta) = (u_short) (datawords >> 16);
1995 *lspr++ = (u_short) (datawords & 0xffff);
2003 "swap %2 ; lslw %4,%2 ; movew %2,%0@(%3:w:2) ; "
2004 "swap %2 ; lslw %4,%2 ; movew %2,%0@+"
2005 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta), "d" (bits));
2007 *(lspr + delta) = (u_short) (datawords >> (16 + bits));
2008 *lspr++ = (u_short) ((datawords & 0x0000ffff) >> bits);
2011 while (--words >= 0) {
2013 asm volatile ("moveql #0,%%d0 ; movew %%d0,%0@(%2:w:2) ; movew %%d0,%0@+"
2014 : "=a" (lspr) : "0" (lspr), "d" (delta) : "d0");
2016 *(lspr + delta) = 0;
2021 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
2022 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
2026 u_short *tmp = lspr;
2032 par->crsr.height = var->height;
2033 par->crsr.width = var->width;
2034 par->crsr.spot_x = var->xspot;
2035 par->crsr.spot_y = var->yspot;
2036 par->crsr.fmode = fmode;
2038 par->fmode &= ~(FMODE_SPAGEM | FMODE_SPR32);
2039 par->fmode |= sprfetchmode[fmode];
2040 custom.fmode = par->fmode;
2045 static int ami_get_cursorstate(struct fb_cursorstate *state)
2047 struct amifb_par *par = ¤tpar;
2049 state->xoffset = par->crsr.crsr_x;
2050 state->yoffset = par->crsr.crsr_y;
2051 state->mode = cursormode;
2055 static int ami_set_cursorstate(struct fb_cursorstate *state)
2057 struct amifb_par *par = ¤tpar;
2059 par->crsr.crsr_x = state->xoffset;
2060 par->crsr.crsr_y = state->yoffset;
2061 if ((cursormode = state->mode) == FB_CURSOR_OFF)
2067 static void ami_set_sprite(void)
2069 struct amifb_par *par = ¤tpar;
2070 copins *copl, *cops;
2075 cops = copdisplay.list[currentcop][0];
2076 copl = copdisplay.list[currentcop][1];
2077 ps = pl = ZTWO_PADDR(dummysprite);
2078 mx = par->crsr.crsr_x - par->crsr.spot_x;
2079 my = par->crsr.crsr_y - par->crsr.spot_y;
2080 if (!(par->vmode & FB_VMODE_YWRAP)) {
2084 if (!is_blanked && cursorstate > 0 && par->crsr.height > 0 &&
2085 mx > -(short)par->crsr.width && mx < par->xres &&
2086 my > -(short)par->crsr.height && my < par->yres) {
2087 pl = ZTWO_PADDR(lofsprite);
2088 hs = par->diwstrt_h + (mx << par->clk_shift) - 4;
2089 vs = par->diwstrt_v + (my << par->line_shift);
2090 ve = vs + (par->crsr.height << par->line_shift);
2091 if (par->bplcon0 & BPC0_LACE) {
2092 ps = ZTWO_PADDR(shfsprite);
2093 lofsprite[0] = spr2hw_pos(vs, hs);
2094 shfsprite[0] = spr2hw_pos(vs + 1, hs);
2096 lofsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
2097 shfsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs + 1, hs, ve + 1);
2098 pt = pl; pl = ps; ps = pt;
2100 lofsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs, hs, ve + 1);
2101 shfsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs + 1, hs, ve);
2104 lofsprite[0] = spr2hw_pos(vs, hs) | (IS_AGA && (par->fmode & FMODE_BSCAN2) ? 0x80 : 0);
2105 lofsprite[1 << par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
2108 copl[cop_spr0ptrh].w[1] = highw(pl);
2109 copl[cop_spr0ptrl].w[1] = loww(pl);
2110 if (par->bplcon0 & BPC0_LACE) {
2111 cops[cop_spr0ptrh].w[1] = highw(ps);
2112 cops[cop_spr0ptrl].w[1] = loww(ps);
2118 * Initialise the Copper Initialisation List
2121 static void __init ami_init_copper(void)
2123 copins *cop = copdisplay.init;
2128 (cop++)->l = CMOVE(BPC0_COLOR | BPC0_SHRES | BPC0_ECSENA, bplcon0);
2129 (cop++)->l = CMOVE(0x0181, diwstrt);
2130 (cop++)->l = CMOVE(0x0281, diwstop);
2131 (cop++)->l = CMOVE(0x0000, diwhigh);
2133 (cop++)->l = CMOVE(BPC0_COLOR, bplcon0);
2134 p = ZTWO_PADDR(dummysprite);
2135 for (i = 0; i < 8; i++) {
2136 (cop++)->l = CMOVE(0, spr[i].pos);
2137 (cop++)->l = CMOVE(highw(p), sprpt[i]);
2138 (cop++)->l = CMOVE2(loww(p), sprpt[i]);
2141 (cop++)->l = CMOVE(IF_SETCLR | IF_COPER, intreq);
2142 copdisplay.wait = cop;
2144 (cop++)->l = CMOVE(0, copjmp2);
2147 custom.cop1lc = (u_short *)ZTWO_PADDR(copdisplay.init);
2151 static void ami_reinit_copper(void)
2153 struct amifb_par *par = ¤tpar;
2155 copdisplay.init[cip_bplcon0].w[1] = ~(BPC0_BPU3 | BPC0_BPU2 | BPC0_BPU1 | BPC0_BPU0) & par->bplcon0;
2156 copdisplay.wait->l = CWAIT(32, par->diwstrt_v - 4);
2161 * Rebuild the Copper List
2163 * We only change the things that are not static
2166 static void ami_rebuild_copper(void)
2168 struct amifb_par *par = ¤tpar;
2169 copins *copl, *cops;
2170 u_short line, h_end1, h_end2;
2174 if (IS_AGA && maxfmode + par->clk_shift == 0)
2175 h_end1 = par->diwstrt_h - 64;
2177 h_end1 = par->htotal - 32;
2178 h_end2 = par->ddfstop + 64;
2182 copl = copdisplay.rebuild[1];
2184 if (par->vmode & FB_VMODE_YWRAP) {
2185 if ((par->vyres - par->yoffset) != 1 || !mod2(par->diwstrt_v)) {
2186 if (par->yoffset > par->vyres - par->yres) {
2187 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2188 (copl++)->l = CMOVE(highw(p), bplpt[i]);
2189 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
2191 line = par->diwstrt_v + ((par->vyres - par->yoffset) << par->line_shift) - 1;
2192 while (line >= 512) {
2193 (copl++)->l = CWAIT(h_end1, 510);
2196 if (line >= 510 && IS_AGA && maxfmode + par->clk_shift == 0)
2197 (copl++)->l = CWAIT(h_end1, line);
2199 (copl++)->l = CWAIT(h_end2, line);
2200 p = par->bplpt0wrap;
2203 p = par->bplpt0wrap;
2205 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2206 (copl++)->l = CMOVE(highw(p), bplpt[i]);
2207 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
2211 if (par->bplcon0 & BPC0_LACE) {
2212 cops = copdisplay.rebuild[0];
2214 if (mod2(par->diwstrt_v))
2215 p -= par->next_line;
2217 p += par->next_line;
2218 if (par->vmode & FB_VMODE_YWRAP) {
2219 if ((par->vyres - par->yoffset) != 1 || mod2(par->diwstrt_v)) {
2220 if (par->yoffset > par->vyres - par->yres + 1) {
2221 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2222 (cops++)->l = CMOVE(highw(p), bplpt[i]);
2223 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
2225 line = par->diwstrt_v + ((par->vyres - par->yoffset) << par->line_shift) - 2;
2226 while (line >= 512) {
2227 (cops++)->l = CWAIT(h_end1, 510);
2230 if (line > 510 && IS_AGA && maxfmode + par->clk_shift == 0)
2231 (cops++)->l = CWAIT(h_end1, line);
2233 (cops++)->l = CWAIT(h_end2, line);
2234 p = par->bplpt0wrap;
2235 if (mod2(par->diwstrt_v + par->vyres -
2237 p -= par->next_line;
2239 p += par->next_line;
2242 p = par->bplpt0wrap - par->next_line;
2244 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
2245 (cops++)->l = CMOVE(highw(p), bplpt[i]);
2246 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
2254 * Build the Copper List
2257 static void ami_build_copper(void)
2259 struct amifb_par *par = ¤tpar;
2260 copins *copl, *cops;
2263 currentcop = 1 - currentcop;
2265 copl = copdisplay.list[currentcop][1];
2267 (copl++)->l = CWAIT(0, 10);
2268 (copl++)->l = CMOVE(par->bplcon0, bplcon0);
2269 (copl++)->l = CMOVE(0, sprpt[0]);
2270 (copl++)->l = CMOVE2(0, sprpt[0]);
2272 if (par->bplcon0 & BPC0_LACE) {
2273 cops = copdisplay.list[currentcop][0];
2275 (cops++)->l = CWAIT(0, 10);
2276 (cops++)->l = CMOVE(par->bplcon0, bplcon0);
2277 (cops++)->l = CMOVE(0, sprpt[0]);
2278 (cops++)->l = CMOVE2(0, sprpt[0]);
2280 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v + 1), diwstrt);
2281 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v + 1), diwstop);
2282 (cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
2283 (cops++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
2285 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v + 1,
2286 par->diwstop_h, par->diwstop_v + 1), diwhigh);
2287 (cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
2288 par->diwstop_h, par->diwstop_v), diwhigh);
2290 if (par->beamcon0 & BMC0_VARBEAMEN) {
2291 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
2292 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt + 1), vbstrt);
2293 (copl++)->l = CMOVE(vbstop2hw(par->vbstop + 1), vbstop);
2294 (cops++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
2295 (cops++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
2296 (cops++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
2300 p = ZTWO_PADDR(copdisplay.list[currentcop][0]);
2301 (copl++)->l = CMOVE(highw(p), cop2lc);
2302 (copl++)->l = CMOVE2(loww(p), cop2lc);
2303 p = ZTWO_PADDR(copdisplay.list[currentcop][1]);
2304 (cops++)->l = CMOVE(highw(p), cop2lc);
2305 (cops++)->l = CMOVE2(loww(p), cop2lc);
2306 copdisplay.rebuild[0] = cops;
2308 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
2309 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
2311 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
2312 par->diwstop_h, par->diwstop_v), diwhigh);
2314 if (par->beamcon0 & BMC0_VARBEAMEN) {
2315 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
2316 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
2317 (copl++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
2322 copdisplay.rebuild[1] = copl;
2325 ami_rebuild_copper();
2329 static void __init amifb_setup_mcap(char *spec)
2332 int vmin, vmax, hmin, hmax;
2334 /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax>
2335 * <V*> vertical freq. in Hz
2336 * <H*> horizontal freq. in kHz
2339 if (!(p = strsep(&spec, ";")) || !*p)
2341 vmin = simple_strtoul(p, NULL, 10);
2344 if (!(p = strsep(&spec, ";")) || !*p)
2346 vmax = simple_strtoul(p, NULL, 10);
2347 if (vmax <= 0 || vmax <= vmin)
2349 if (!(p = strsep(&spec, ";")) || !*p)
2351 hmin = 1000 * simple_strtoul(p, NULL, 10);
2354 if (!(p = strsep(&spec, "")) || !*p)
2356 hmax = 1000 * simple_strtoul(p, NULL, 10);
2357 if (hmax <= 0 || hmax <= hmin)
2360 fb_info.monspecs.vfmin = vmin;
2361 fb_info.monspecs.vfmax = vmax;
2362 fb_info.monspecs.hfmin = hmin;
2363 fb_info.monspecs.hfmax = hmax;
2366 static int __init amifb_setup(char *options)
2370 if (!options || !*options)
2373 while ((this_opt = strsep(&options, ",")) != NULL) {
2376 if (!strcmp(this_opt, "inverse")) {
2379 } else if (!strcmp(this_opt, "ilbm"))
2381 else if (!strncmp(this_opt, "monitorcap:", 11))
2382 amifb_setup_mcap(this_opt + 11);
2383 else if (!strncmp(this_opt, "fstart:", 7))
2384 min_fstrt = simple_strtoul(this_opt + 7, NULL, 0);
2386 mode_option = this_opt;
2396 static int amifb_check_var(struct fb_var_screeninfo *var,
2397 struct fb_info *info)
2400 struct amifb_par par;
2402 /* Validate wanted screen parameters */
2403 if ((err = ami_decode_var(var, &par)))
2406 /* Encode (possibly rounded) screen parameters */
2407 ami_encode_var(var, &par);
2412 static int amifb_set_par(struct fb_info *info)
2414 struct amifb_par *par = info->par;
2419 /* Decode wanted screen parameters */
2420 ami_decode_var(&info->var, par);
2422 /* Set new videomode */
2425 /* Set VBlank trigger */
2428 /* Update fix for new screen parameters */
2429 if (par->bpp == 1) {
2430 info->fix.type = FB_TYPE_PACKED_PIXELS;
2431 info->fix.type_aux = 0;
2432 } else if (amifb_ilbm) {
2433 info->fix.type = FB_TYPE_INTERLEAVED_PLANES;
2434 info->fix.type_aux = par->next_line;
2436 info->fix.type = FB_TYPE_PLANES;
2437 info->fix.type_aux = 0;
2439 info->fix.line_length = div8(upx(16 << maxfmode, par->vxres));
2441 if (par->vmode & FB_VMODE_YWRAP) {
2442 info->fix.ywrapstep = 1;
2443 info->fix.xpanstep = 0;
2444 info->fix.ypanstep = 0;
2445 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YWRAP |
2446 FBINFO_READS_FAST; /* override SCROLL_REDRAW */
2448 info->fix.ywrapstep = 0;
2449 if (par->vmode & FB_VMODE_SMOOTH_XPAN)
2450 info->fix.xpanstep = 1;
2452 info->fix.xpanstep = 16 << maxfmode;
2453 info->fix.ypanstep = 1;
2454 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
2461 * Set a single color register. The values supplied are already
2462 * rounded down to the hardware's capabilities (according to the
2463 * entries in the var structure). Return != 0 for invalid regno.
2466 static int amifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
2467 u_int transp, struct fb_info *info)
2472 } else if (currentpar.bplcon0 & BPC0_SHRES) {
2489 * Update the corresponding Hardware Color Register, unless it's Color
2490 * Register 0 and the screen is blanked.
2492 * VBlank is switched off to protect bplcon3 or ecs_palette[] from
2493 * being changed by ami_do_blank() during the VBlank.
2496 if (regno || !is_blanked) {
2497 #if defined(CONFIG_FB_AMIGA_AGA)
2499 u_short bplcon3 = currentpar.bplcon3;
2501 custom.bplcon3 = bplcon3 | (regno << 8 & 0xe000);
2502 custom.color[regno & 31] = rgb2hw8_high(red, green,
2504 custom.bplcon3 = bplcon3 | (regno << 8 & 0xe000) |
2506 custom.color[regno & 31] = rgb2hw8_low(red, green,
2508 custom.bplcon3 = bplcon3;
2512 #if defined(CONFIG_FB_AMIGA_ECS)
2513 if (currentpar.bplcon0 & BPC0_SHRES) {
2514 u_short color, mask;
2518 color = rgb2hw2(red, green, blue);
2520 for (i = regno + 12; i >= (int)regno; i -= 4)
2521 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
2522 mask <<= 2; color >>= 2;
2523 regno = down16(regno) + mul4(mod4(regno));
2524 for (i = regno + 3; i >= (int)regno; i--)
2525 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
2529 custom.color[regno] = rgb2hw4(red, green, blue);
2536 * Blank the display.
2539 static int amifb_blank(int blank, struct fb_info *info)
2541 do_blank = blank ? blank : -1;
2548 * Pan or Wrap the Display
2550 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
2553 static int amifb_pan_display(struct fb_var_screeninfo *var,
2554 struct fb_info *info)
2556 if (var->vmode & FB_VMODE_YWRAP) {
2557 if (var->yoffset < 0 ||
2558 var->yoffset >= info->var.yres_virtual || var->xoffset)
2562 * TODO: There will be problems when xpan!=1, so some columns
2563 * on the right side will never be seen
2565 if (var->xoffset + info->var.xres >
2566 upx(16 << maxfmode, info->var.xres_virtual) ||
2567 var->yoffset + info->var.yres > info->var.yres_virtual)
2571 info->var.xoffset = var->xoffset;
2572 info->var.yoffset = var->yoffset;
2573 if (var->vmode & FB_VMODE_YWRAP)
2574 info->var.vmode |= FB_VMODE_YWRAP;
2576 info->var.vmode &= ~FB_VMODE_YWRAP;
2581 #if BITS_PER_LONG == 32
2582 #define BYTES_PER_LONG 4
2583 #define SHIFT_PER_LONG 5
2584 #elif BITS_PER_LONG == 64
2585 #define BYTES_PER_LONG 8
2586 #define SHIFT_PER_LONG 6
2588 #define Please update me
2593 * Compose two values, using a bitmask as decision value
2594 * This is equivalent to (a & mask) | (b & ~mask)
2597 static inline unsigned long comp(unsigned long a, unsigned long b,
2600 return ((a ^ b) & mask) ^ b;
2604 static inline unsigned long xor(unsigned long a, unsigned long b,
2607 return (a & mask) ^ b;
2612 * Unaligned forward bit copy using 32-bit or 64-bit memory accesses
2615 static void bitcpy(unsigned long *dst, int dst_idx, const unsigned long *src,
2618 unsigned long first, last;
2619 int shift = dst_idx - src_idx, left, right;
2620 unsigned long d0, d1;
2626 shift = dst_idx - src_idx;
2627 first = ~0UL >> dst_idx;
2628 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
2631 // Same alignment for source and dest
2633 if (dst_idx + n <= BITS_PER_LONG) {
2637 *dst = comp(*src, *dst, first);
2639 // Multiple destination words
2642 *dst = comp(*src, *dst, first);
2645 n -= BITS_PER_LONG - dst_idx;
2666 *dst = comp(*src, *dst, last);
2669 // Different alignment for source and dest
2671 right = shift & (BITS_PER_LONG - 1);
2672 left = -shift & (BITS_PER_LONG - 1);
2674 if (dst_idx + n <= BITS_PER_LONG) {
2675 // Single destination word
2679 // Single source word
2680 *dst = comp(*src >> right, *dst, first);
2681 } else if (src_idx + n <= BITS_PER_LONG) {
2682 // Single source word
2683 *dst = comp(*src << left, *dst, first);
2688 *dst = comp(d0 << left | d1 >> right, *dst,
2692 // Multiple destination words
2696 // Single source word
2697 *dst = comp(d0 >> right, *dst, first);
2699 n -= BITS_PER_LONG - dst_idx;
2703 *dst = comp(d0 << left | d1 >> right, *dst,
2707 n -= BITS_PER_LONG - dst_idx;
2711 m = n % BITS_PER_LONG;
2715 *dst++ = d0 << left | d1 >> right;
2718 *dst++ = d0 << left | d1 >> right;
2721 *dst++ = d0 << left | d1 >> right;
2724 *dst++ = d0 << left | d1 >> right;
2730 *dst++ = d0 << left | d1 >> right;
2737 // Single source word
2738 *dst = comp(d0 << left, *dst, last);
2742 *dst = comp(d0 << left | d1 >> right,
2752 * Unaligned reverse bit copy using 32-bit or 64-bit memory accesses
2755 static void bitcpy_rev(unsigned long *dst, int dst_idx,
2756 const unsigned long *src, int src_idx, u32 n)
2758 unsigned long first, last;
2759 int shift = dst_idx - src_idx, left, right;
2760 unsigned long d0, d1;
2766 dst += (n - 1) / BITS_PER_LONG;
2767 src += (n - 1) / BITS_PER_LONG;
2768 if ((n - 1) % BITS_PER_LONG) {
2769 dst_idx += (n - 1) % BITS_PER_LONG;
2770 dst += dst_idx >> SHIFT_PER_LONG;
2771 dst_idx &= BITS_PER_LONG - 1;
2772 src_idx += (n - 1) % BITS_PER_LONG;
2773 src += src_idx >> SHIFT_PER_LONG;
2774 src_idx &= BITS_PER_LONG - 1;
2777 shift = dst_idx - src_idx;
2778 first = ~0UL << (BITS_PER_LONG - 1 - dst_idx);
2779 last = ~(~0UL << (BITS_PER_LONG - 1 - ((dst_idx - n) % BITS_PER_LONG)));
2782 // Same alignment for source and dest
2784 if ((unsigned long)dst_idx + 1 >= n) {
2788 *dst = comp(*src, *dst, first);
2790 // Multiple destination words
2793 *dst = comp(*src, *dst, first);
2817 *dst = comp(*src, *dst, last);
2820 // Different alignment for source and dest
2822 right = shift & (BITS_PER_LONG - 1);
2823 left = -shift & (BITS_PER_LONG - 1);
2825 if ((unsigned long)dst_idx + 1 >= n) {
2826 // Single destination word
2830 // Single source word
2831 *dst = comp(*src << left, *dst, first);
2832 } else if (1 + (unsigned long)src_idx >= n) {
2833 // Single source word
2834 *dst = comp(*src >> right, *dst, first);
2839 *dst = comp(d0 >> right | d1 << left, *dst,
2843 // Multiple destination words
2847 // Single source word
2848 *dst = comp(d0 << left, *dst, first);
2854 *dst = comp(d0 >> right | d1 << left, *dst,
2862 m = n % BITS_PER_LONG;
2866 *dst-- = d0 >> right | d1 << left;
2869 *dst-- = d0 >> right | d1 << left;
2872 *dst-- = d0 >> right | d1 << left;
2875 *dst-- = d0 >> right | d1 << left;
2881 *dst-- = d0 >> right | d1 << left;
2888 // Single source word
2889 *dst = comp(d0 >> right, *dst, last);
2893 *dst = comp(d0 >> right | d1 << left,
2903 * Unaligned forward inverting bit copy using 32-bit or 64-bit memory
2907 static void bitcpy_not(unsigned long *dst, int dst_idx,
2908 const unsigned long *src, int src_idx, u32 n)
2910 unsigned long first, last;
2911 int shift = dst_idx - src_idx, left, right;
2912 unsigned long d0, d1;
2918 shift = dst_idx - src_idx;
2919 first = ~0UL >> dst_idx;
2920 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
2923 // Same alignment for source and dest
2925 if (dst_idx + n <= BITS_PER_LONG) {
2929 *dst = comp(~*src, *dst, first);
2931 // Multiple destination words
2934 *dst = comp(~*src, *dst, first);
2937 n -= BITS_PER_LONG - dst_idx;
2958 *dst = comp(~*src, *dst, last);
2961 // Different alignment for source and dest
2963 right = shift & (BITS_PER_LONG - 1);
2964 left = -shift & (BITS_PER_LONG - 1);
2966 if (dst_idx + n <= BITS_PER_LONG) {
2967 // Single destination word
2971 // Single source word
2972 *dst = comp(~*src >> right, *dst, first);
2973 } else if (src_idx + n <= BITS_PER_LONG) {
2974 // Single source word
2975 *dst = comp(~*src << left, *dst, first);
2980 *dst = comp(d0 << left | d1 >> right, *dst,
2984 // Multiple destination words
2988 // Single source word
2989 *dst = comp(d0 >> right, *dst, first);
2991 n -= BITS_PER_LONG - dst_idx;
2995 *dst = comp(d0 << left | d1 >> right, *dst,
2999 n -= BITS_PER_LONG - dst_idx;
3003 m = n % BITS_PER_LONG;
3007 *dst++ = d0 << left | d1 >> right;
3010 *dst++ = d0 << left | d1 >> right;
3013 *dst++ = d0 << left | d1 >> right;
3016 *dst++ = d0 << left | d1 >> right;
3022 *dst++ = d0 << left | d1 >> right;
3029 // Single source word
3030 *dst = comp(d0 << left, *dst, last);
3034 *dst = comp(d0 << left | d1 >> right,
3044 * Unaligned 32-bit pattern fill using 32/64-bit memory accesses
3047 static void bitfill32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
3049 unsigned long val = pat;
3050 unsigned long first, last;
3055 #if BITS_PER_LONG == 64
3059 first = ~0UL >> dst_idx;
3060 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
3062 if (dst_idx + n <= BITS_PER_LONG) {
3066 *dst = comp(val, *dst, first);
3068 // Multiple destination words
3071 *dst = comp(val, *dst, first);
3073 n -= BITS_PER_LONG - dst_idx;
3094 *dst = comp(val, *dst, last);
3100 * Unaligned 32-bit pattern xor using 32/64-bit memory accesses
3103 static void bitxor32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
3105 unsigned long val = pat;
3106 unsigned long first, last;
3111 #if BITS_PER_LONG == 64
3115 first = ~0UL >> dst_idx;
3116 last = ~(~0UL >> ((dst_idx + n) % BITS_PER_LONG));
3118 if (dst_idx + n <= BITS_PER_LONG) {
3122 *dst = xor(val, *dst, first);
3124 // Multiple destination words
3127 *dst = xor(val, *dst, first);
3129 n -= BITS_PER_LONG - dst_idx;
3146 *dst = xor(val, *dst, last);
3150 static inline void fill_one_line(int bpp, unsigned long next_plane,
3151 unsigned long *dst, int dst_idx, u32 n,
3155 dst += dst_idx >> SHIFT_PER_LONG;
3156 dst_idx &= (BITS_PER_LONG - 1);
3157 bitfill32(dst, dst_idx, color & 1 ? ~0 : 0, n);
3161 dst_idx += next_plane * 8;
3165 static inline void xor_one_line(int bpp, unsigned long next_plane,
3166 unsigned long *dst, int dst_idx, u32 n,
3170 dst += dst_idx >> SHIFT_PER_LONG;
3171 dst_idx &= (BITS_PER_LONG - 1);
3172 bitxor32(dst, dst_idx, color & 1 ? ~0 : 0, n);
3176 dst_idx += next_plane * 8;
3181 static void amifb_fillrect(struct fb_info *info,
3182 const struct fb_fillrect *rect)
3184 struct amifb_par *par = info->par;
3185 int dst_idx, x2, y2;
3189 if (!rect->width || !rect->height)
3193 * We could use hardware clipping but on many cards you get around
3194 * hardware clipping by writing to framebuffer directly.
3196 x2 = rect->dx + rect->width;
3197 y2 = rect->dy + rect->height;
3198 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
3199 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
3200 width = x2 - rect->dx;
3201 height = y2 - rect->dy;
3203 dst = (unsigned long *)
3204 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1));
3205 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8;
3206 dst_idx += rect->dy * par->next_line * 8 + rect->dx;
3208 switch (rect->rop) {
3210 fill_one_line(info->var.bits_per_pixel,
3211 par->next_plane, dst, dst_idx, width,
3216 xor_one_line(info->var.bits_per_pixel, par->next_plane,
3217 dst, dst_idx, width, rect->color);
3220 dst_idx += par->next_line * 8;
3224 static inline void copy_one_line(int bpp, unsigned long next_plane,
3225 unsigned long *dst, int dst_idx,
3226 unsigned long *src, int src_idx, u32 n)
3229 dst += dst_idx >> SHIFT_PER_LONG;
3230 dst_idx &= (BITS_PER_LONG - 1);
3231 src += src_idx >> SHIFT_PER_LONG;
3232 src_idx &= (BITS_PER_LONG - 1);
3233 bitcpy(dst, dst_idx, src, src_idx, n);
3236 dst_idx += next_plane * 8;
3237 src_idx += next_plane * 8;
3241 static inline void copy_one_line_rev(int bpp, unsigned long next_plane,
3242 unsigned long *dst, int dst_idx,
3243 unsigned long *src, int src_idx, u32 n)
3246 dst += dst_idx >> SHIFT_PER_LONG;
3247 dst_idx &= (BITS_PER_LONG - 1);
3248 src += src_idx >> SHIFT_PER_LONG;
3249 src_idx &= (BITS_PER_LONG - 1);
3250 bitcpy_rev(dst, dst_idx, src, src_idx, n);
3253 dst_idx += next_plane * 8;
3254 src_idx += next_plane * 8;
3259 static void amifb_copyarea(struct fb_info *info,
3260 const struct fb_copyarea *area)
3262 struct amifb_par *par = info->par;
3264 u32 dx, dy, sx, sy, width, height;
3265 unsigned long *dst, *src;
3266 int dst_idx, src_idx;
3269 /* clip the destination */
3270 x2 = area->dx + area->width;
3271 y2 = area->dy + area->height;
3272 dx = area->dx > 0 ? area->dx : 0;
3273 dy = area->dy > 0 ? area->dy : 0;
3274 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
3275 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
3279 if (area->sx + dx < area->dx || area->sy + dy < area->dy)
3283 sx = area->sx + (dx - area->dx);
3284 sy = area->sy + (dy - area->dy);
3286 /* the source must be completely inside the virtual screen */
3287 if (sx + width > info->var.xres_virtual ||
3288 sy + height > info->var.yres_virtual)
3291 if (dy > sy || (dy == sy && dx > sx)) {
3296 dst = (unsigned long *)
3297 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1));
3299 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8;
3301 dst_idx += dy * par->next_line * 8 + dx;
3302 src_idx += sy * par->next_line * 8 + sx;
3305 dst_idx -= par->next_line * 8;
3306 src_idx -= par->next_line * 8;
3307 copy_one_line_rev(info->var.bits_per_pixel,
3308 par->next_plane, dst, dst_idx, src,
3313 copy_one_line(info->var.bits_per_pixel,
3314 par->next_plane, dst, dst_idx, src,
3316 dst_idx += par->next_line * 8;
3317 src_idx += par->next_line * 8;
3323 static inline void expand_one_line(int bpp, unsigned long next_plane,
3324 unsigned long *dst, int dst_idx, u32 n,
3325 const u8 *data, u32 bgcolor, u32 fgcolor)
3327 const unsigned long *src;
3331 dst += dst_idx >> SHIFT_PER_LONG;
3332 dst_idx &= (BITS_PER_LONG - 1);
3333 if ((bgcolor ^ fgcolor) & 1) {
3334 src = (unsigned long *)
3335 ((unsigned long)data & ~(BYTES_PER_LONG - 1));
3336 src_idx = ((unsigned long)data & (BYTES_PER_LONG - 1)) * 8;
3338 bitcpy(dst, dst_idx, src, src_idx, n);
3340 bitcpy_not(dst, dst_idx, src, src_idx, n);
3343 bitfill32(dst, dst_idx, fgcolor & 1 ? ~0 : 0, n);
3348 dst_idx += next_plane * 8;
3353 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
3355 struct amifb_par *par = info->par;
3360 u32 dx, dy, width, height, pitch;
3363 * We could use hardware clipping but on many cards you get around
3364 * hardware clipping by writing to framebuffer directly like we are
3367 x2 = image->dx + image->width;
3368 y2 = image->dy + image->height;
3371 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
3372 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
3376 if (image->depth == 1) {
3377 dst = (unsigned long *)
3378 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1));
3379 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8;
3380 dst_idx += dy * par->next_line * 8 + dx;
3382 pitch = (image->width + 7) / 8;
3384 expand_one_line(info->var.bits_per_pixel,
3385 par->next_plane, dst, dst_idx, width,
3386 src, image->bg_color,
3388 dst_idx += par->next_line * 8;
3392 c2p_planar(info->screen_base, image->data, dx, dy, width,
3393 height, par->next_line, par->next_plane,
3394 image->width, info->var.bits_per_pixel);
3400 * Amiga Frame Buffer Specific ioctls
3403 static int amifb_ioctl(struct fb_info *info,
3404 unsigned int cmd, unsigned long arg)
3407 struct fb_fix_cursorinfo fix;
3408 struct fb_var_cursorinfo var;
3409 struct fb_cursorstate state;
3411 void __user *argp = (void __user *)arg;
3415 case FBIOGET_FCURSORINFO:
3416 i = ami_get_fix_cursorinfo(&crsr.fix);
3419 return copy_to_user(argp, &crsr.fix,
3420 sizeof(crsr.fix)) ? -EFAULT : 0;
3422 case FBIOGET_VCURSORINFO:
3423 i = ami_get_var_cursorinfo(&crsr.var,
3424 ((struct fb_var_cursorinfo __user *)arg)->data);
3427 return copy_to_user(argp, &crsr.var,
3428 sizeof(crsr.var)) ? -EFAULT : 0;
3430 case FBIOPUT_VCURSORINFO:
3431 if (copy_from_user(&crsr.var, argp, sizeof(crsr.var)))
3433 return ami_set_var_cursorinfo(&crsr.var,
3434 ((struct fb_var_cursorinfo __user *)arg)->data);
3436 case FBIOGET_CURSORSTATE:
3437 i = ami_get_cursorstate(&crsr.state);
3440 return copy_to_user(argp, &crsr.state,
3441 sizeof(crsr.state)) ? -EFAULT : 0;
3443 case FBIOPUT_CURSORSTATE:
3444 if (copy_from_user(&crsr.state, argp, sizeof(crsr.state)))
3446 return ami_set_cursorstate(&crsr.state);
3453 * Flash the cursor (called by VBlank interrupt)
3456 static int flash_cursor(void)
3458 static int cursorcount = 1;
3460 if (cursormode == FB_CURSOR_FLASH) {
3461 if (!--cursorcount) {
3462 cursorstate = -cursorstate;
3463 cursorcount = cursorrate;
3472 * VBlank Display Interrupt
3475 static irqreturn_t amifb_interrupt(int irq, void *dev_id)
3477 if (do_vmode_pan || do_vmode_full)
3478 ami_update_display();
3485 ami_rebuild_copper();
3486 do_cursor = do_vmode_pan = 0;
3487 } else if (do_cursor) {
3501 if (do_vmode_full) {
3502 ami_reinit_copper();
3509 static struct fb_ops amifb_ops = {
3510 .owner = THIS_MODULE,
3511 .fb_check_var = amifb_check_var,
3512 .fb_set_par = amifb_set_par,
3513 .fb_setcolreg = amifb_setcolreg,
3514 .fb_blank = amifb_blank,
3515 .fb_pan_display = amifb_pan_display,
3516 .fb_fillrect = amifb_fillrect,
3517 .fb_copyarea = amifb_copyarea,
3518 .fb_imageblit = amifb_imageblit,
3519 .fb_ioctl = amifb_ioctl,
3524 * Allocate, Clear and Align a Block of Chip Memory
3527 static void *aligned_chipptr;
3529 static inline u_long __init chipalloc(u_long size)
3531 aligned_chipptr = amiga_chip_alloc(size, "amifb [RAM]");
3532 if (!aligned_chipptr) {
3533 pr_err("amifb: No Chip RAM for frame buffer");
3536 memset(aligned_chipptr, 0, size);
3537 return (u_long)aligned_chipptr;
3540 static inline void chipfree(void)
3542 if (aligned_chipptr)
3543 amiga_chip_free(aligned_chipptr);
3547 static void amifb_deinit(struct platform_device *pdev)
3549 if (fb_info.cmap.len)
3550 fb_dealloc_cmap(&fb_info.cmap);
3553 iounmap((void *)videomemory);
3554 custom.dmacon = DMAF_ALL | DMAF_MASTER;
3562 static int __init amifb_probe(struct platform_device *pdev)
3564 int tag, i, err = 0;
3569 char *option = NULL;
3571 if (fb_get_options("amifb", &option)) {
3575 amifb_setup(option);
3577 custom.dmacon = DMAF_ALL | DMAF_MASTER;
3579 switch (amiga_chipset) {
3580 #ifdef CONFIG_FB_AMIGA_OCS
3582 strcat(fb_info.fix.id, "OCS");
3585 maxdepth[TAG_SHRES] = 0; /* OCS means no SHRES */
3586 maxdepth[TAG_HIRES] = 4;
3587 maxdepth[TAG_LORES] = 6;
3588 maxfmode = TAG_FMODE_1;
3589 defmode = amiga_vblank == 50 ? DEFMODE_PAL : DEFMODE_NTSC;
3590 fb_info.fix.smem_len = VIDEOMEMSIZE_OCS;
3592 #endif /* CONFIG_FB_AMIGA_OCS */
3594 #ifdef CONFIG_FB_AMIGA_ECS
3596 strcat(fb_info.fix.id, "ECS");
3598 maxdepth[TAG_SHRES] = 2;
3599 maxdepth[TAG_HIRES] = 4;
3600 maxdepth[TAG_LORES] = 6;
3601 maxfmode = TAG_FMODE_1;
3602 if (AMIGAHW_PRESENT(AMBER_FF))
3603 defmode = amiga_vblank == 50 ? DEFMODE_AMBER_PAL
3604 : DEFMODE_AMBER_NTSC;
3606 defmode = amiga_vblank == 50 ? DEFMODE_PAL
3608 if (amiga_chip_avail() - CHIPRAM_SAFETY_LIMIT >
3609 VIDEOMEMSIZE_ECS_2M)
3610 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_2M;
3612 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_1M;
3614 #endif /* CONFIG_FB_AMIGA_ECS */
3616 #ifdef CONFIG_FB_AMIGA_AGA
3618 strcat(fb_info.fix.id, "AGA");
3620 maxdepth[TAG_SHRES] = 8;
3621 maxdepth[TAG_HIRES] = 8;
3622 maxdepth[TAG_LORES] = 8;
3623 maxfmode = TAG_FMODE_4;
3624 defmode = DEFMODE_AGA;
3625 if (amiga_chip_avail() - CHIPRAM_SAFETY_LIMIT >
3626 VIDEOMEMSIZE_AGA_2M)
3627 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_2M;
3629 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_1M;
3631 #endif /* CONFIG_FB_AMIGA_AGA */
3634 #ifdef CONFIG_FB_AMIGA_OCS
3635 printk("Unknown graphics chipset, defaulting to OCS\n");
3636 strcat(fb_info.fix.id, "Unknown");
3637 goto default_chipset;
3638 #else /* CONFIG_FB_AMIGA_OCS */
3641 #endif /* CONFIG_FB_AMIGA_OCS */
3646 * Calculate the Pixel Clock Values for this Machine
3650 u_long tmp = DIVUL(200000000000ULL, amiga_eclock);
3652 pixclock[TAG_SHRES] = (tmp + 4) / 8; /* SHRES: 35 ns / 28 MHz */
3653 pixclock[TAG_HIRES] = (tmp + 2) / 4; /* HIRES: 70 ns / 14 MHz */
3654 pixclock[TAG_LORES] = (tmp + 1) / 2; /* LORES: 140 ns / 7 MHz */
3658 * Replace the Tag Values with the Real Pixel Clock Values
3661 for (i = 0; i < NUM_TOTAL_MODES; i++) {
3662 struct fb_videomode *mode = &ami_modedb[i];
3663 tag = mode->pixclock;
3664 if (tag == TAG_SHRES || tag == TAG_HIRES || tag == TAG_LORES) {
3665 mode->pixclock = pixclock[tag];
3670 * These monitor specs are for a typical Amiga monitor (e.g. A1960)
3672 if (fb_info.monspecs.hfmin == 0) {
3673 fb_info.monspecs.hfmin = 15000;
3674 fb_info.monspecs.hfmax = 38000;
3675 fb_info.monspecs.vfmin = 49;
3676 fb_info.monspecs.vfmax = 90;
3679 fb_info.fbops = &amifb_ops;
3680 fb_info.par = ¤tpar;
3681 fb_info.flags = FBINFO_DEFAULT;
3682 fb_info.device = &pdev->dev;
3684 if (!fb_find_mode(&fb_info.var, &fb_info, mode_option, ami_modedb,
3685 NUM_TOTAL_MODES, &ami_modedb[defmode], 4)) {
3690 fb_videomode_to_modelist(ami_modedb, NUM_TOTAL_MODES,
3694 chipptr = chipalloc(fb_info.fix.smem_len + SPRITEMEMSIZE +
3695 DUMMYSPRITEMEMSIZE + COPINITSIZE +
3702 assignchunk(videomemory, u_long, chipptr, fb_info.fix.smem_len);
3703 assignchunk(spritememory, u_long, chipptr, SPRITEMEMSIZE);
3704 assignchunk(dummysprite, u_short *, chipptr, DUMMYSPRITEMEMSIZE);
3705 assignchunk(copdisplay.init, copins *, chipptr, COPINITSIZE);
3706 assignchunk(copdisplay.list[0][0], copins *, chipptr, COPLISTSIZE);
3707 assignchunk(copdisplay.list[0][1], copins *, chipptr, COPLISTSIZE);
3708 assignchunk(copdisplay.list[1][0], copins *, chipptr, COPLISTSIZE);
3709 assignchunk(copdisplay.list[1][1], copins *, chipptr, COPLISTSIZE);
3712 * access the videomem with writethrough cache
3714 fb_info.fix.smem_start = (u_long)ZTWO_PADDR(videomemory);
3715 videomemory = (u_long)ioremap_writethrough(fb_info.fix.smem_start,
3716 fb_info.fix.smem_len);
3718 printk("amifb: WARNING! unable to map videomem cached writethrough\n");
3719 fb_info.screen_base = (char *)ZTWO_VADDR(fb_info.fix.smem_start);
3721 fb_info.screen_base = (char *)videomemory;
3723 memset(dummysprite, 0, DUMMYSPRITEMEMSIZE);
3726 * Enable Display DMA
3729 custom.dmacon = DMAF_SETCLR | DMAF_MASTER | DMAF_RASTER | DMAF_COPPER |
3730 DMAF_BLITTER | DMAF_SPRITE;
3733 * Make sure the Copper has something to do
3738 if (request_irq(IRQ_AMIGA_COPPER, amifb_interrupt, 0,
3739 "fb vertb handler", ¤tpar)) {
3744 err = fb_alloc_cmap(&fb_info.cmap, 1 << fb_info.var.bits_per_pixel, 0);
3748 if (register_framebuffer(&fb_info) < 0) {
3753 printk("fb%d: %s frame buffer device, using %dK of video memory\n",
3754 fb_info.node, fb_info.fix.id, fb_info.fix.smem_len>>10);
3764 static int __exit amifb_remove(struct platform_device *pdev)
3766 unregister_framebuffer(&fb_info);
3772 static struct platform_driver amifb_driver = {
3773 .remove = __exit_p(amifb_remove),
3775 .name = "amiga-video",
3776 .owner = THIS_MODULE,
3780 static int __init amifb_init(void)
3782 return platform_driver_probe(&amifb_driver, amifb_probe);
3785 module_init(amifb_init);
3787 static void __exit amifb_exit(void)
3789 platform_driver_unregister(&amifb_driver);
3792 module_exit(amifb_exit);
3794 MODULE_LICENSE("GPL");
3795 MODULE_ALIAS("platform:amiga-video");