patch-2.1.124 linux/drivers/video/fbcon.h
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- Lines: 415
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.1.123/linux/drivers/video/fbcon.h
- Orig date:
Tue Jul 28 14:21:09 1998
diff -u --recursive --new-file v2.1.123/linux/drivers/video/fbcon.h linux/drivers/video/fbcon.h
@@ -1,414 +0,0 @@
-/*
- * linux/drivers/video/fbcon.h -- Low level frame buffer based console driver
- *
- * Copyright (C) 1997 Geert Uytterhoeven
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive
- * for more details.
- */
-
-#ifndef __VIDEO_FBCON_H
-#define __VIDEO_FBCON_H
-
-#include <linux/config.h>
-#include <linux/console_struct.h>
-
-
- /*
- * `switch' for the Low Level Operations
- */
-
-struct display_switch {
- void (*setup)(struct display *p);
- void (*bmove)(struct display *p, int sy, int sx, int dy, int dx,
- int height, int width);
- void (*clear)(struct vc_data *conp, struct display *p, int sy, int sx,
- int height, int width);
- void (*putc)(struct vc_data *conp, struct display *p, int c, int yy,
- int xx);
- void (*putcs)(struct vc_data *conp, struct display *p, const unsigned short *s,
- int count, int yy, int xx);
- void (*revc)(struct display *p, int xx, int yy);
- void (*cursor)(struct display *p, int mode, int xx, int yy);
- int (*set_font)(struct display *p, int width, int height);
- void (*clear_margins)(struct vc_data *conp, struct display *p);
- unsigned int fontwidthmask; /* 1 at (1 << (width - 1)) if width is supported */
-};
-
-#ifdef CONFIG_FBCON_FONTWIDTH8_ONLY
-
-/* fontwidth w is supported by dispsw */
-#define FONTWIDTH(w) (1 << ((8) - 1))
-/* fontwidths w1-w2 inclusive are supported by dispsw */
-#define FONTWIDTHRANGE(w1,w2) FONTWIDTH(8)
-
-#else
-
-/* fontwidth w is supported by dispsw */
-#define FONTWIDTH(w) (1 << ((w) - 1))
-/* fontwidths w1-w2 inclusive are supported by dispsw */
-#define FONTWIDTHRANGE(w1,w2) (FONTWIDTH(w2+1) - FONTWIDTH(w1))
-
-#endif
-
- /*
- * Attribute Decoding
- */
-
-/* Color */
-#define attr_fgcol(p,s) \
- (((s) >> ((p)->fgshift)) & 0x0f)
-#define attr_bgcol(p,s) \
- (((s) >> ((p)->bgshift)) & 0x0f)
-#define attr_bgcol_ec(p,conp) \
- (((conp)->vc_video_erase_char >> ((p)->bgshift)) & 0x0f)
-
-/* Monochrome */
-#define attr_bold(p,s) \
- ((s) & 0x200)
-#define attr_reverse(p,s) \
- (((s) & 0x800) ^ ((p)->inverse ? 0x800 : 0))
-#define attr_underline(p,s) \
- ((s) & 0x400)
-#define attr_blink(p,s) \
- ((s) & 0x8000)
-
- /*
- * Scroll Method
- */
-
-#define SCROLL_YWRAP (0)
-#define SCROLL_YPAN (1)
-#define SCROLL_YMOVE (2)
-#define SCROLL_YREDRAW (3)
-
-extern void fbcon_redraw_bmove(struct display *, int, int, int, int, int, int);
-
-
-/* ================================================================= */
-/* Utility Assembler Functions */
-/* ================================================================= */
-
-
-#ifdef __mc68000__
-
-/* ====================================================================== */
-
-/* Those of a delicate disposition might like to skip the next couple of
- * pages.
- *
- * These functions are drop in replacements for memmove and
- * memset(_, 0, _). However their five instances add at least a kilobyte
- * to the object file. You have been warned.
- *
- * Not a great fan of assembler for the sake of it, but I think
- * that these routines are at least 10 times faster than their C
- * equivalents for large blits, and that's important to the lowest level of
- * a graphics driver. Question is whether some scheme with the blitter
- * would be faster. I suspect not for simple text system - not much
- * asynchrony.
- *
- * Code is very simple, just gruesome expansion. Basic strategy is to
- * increase data moved/cleared at each step to 16 bytes to reduce
- * instruction per data move overhead. movem might be faster still
- * For more than 15 bytes, we try to align the write direction on a
- * longword boundary to get maximum speed. This is even more gruesome.
- * Unaligned read/write used requires 68020+ - think this is a problem?
- *
- * Sorry!
- */
-
-
-/* ++roman: I've optimized Robert's original versions in some minor
- * aspects, e.g. moveq instead of movel, let gcc choose the registers,
- * use movem in some places...
- * For other modes than 1 plane, lots of more such assembler functions
- * were needed (e.g. the ones using movep or expanding color values).
- */
-
-/* ++andreas: more optimizations:
- subl #65536,d0 replaced by clrw d0; subql #1,d0 for dbcc
- addal is faster than addaw
- movep is rather expensive compared to ordinary move's
- some functions rewritten in C for clarity, no speed loss */
-
-static __inline__ void *mymemclear_small(void *s, size_t count)
-{
- if (!count)
- return(0);
-
- __asm__ __volatile__(
- "lsrl #1,%1 ; jcc 1f ; moveb %2,%0@-\n\t"
- "1: lsrl #1,%1 ; jcc 1f ; movew %2,%0@-\n\t"
- "1: lsrl #1,%1 ; jcc 1f ; movel %2,%0@-\n\t"
- "1: lsrl #1,%1 ; jcc 1f ; movel %2,%0@- ; movel %2,%0@-\n\t"
- "1: subql #1,%1 ; jcs 3f\n\t"
- "2: moveml %2/%3/%4/%5,%0@-\n\t"
- "dbra %1,2b\n\t"
- "3:"
- : "=a" (s), "=d" (count)
- : "d" (0), "d" (0), "d" (0), "d" (0),
- "0" ((char *)s+count), "1" (count)
- );
-
- return(0);
-}
-
-
-static __inline__ void *mymemclear(void *s, size_t count)
-{
- if (!count)
- return(0);
-
- if (count < 16) {
- __asm__ __volatile__(
- "lsrl #1,%1 ; jcc 1f ; clrb %0@+\n\t"
- "1: lsrl #1,%1 ; jcc 1f ; clrw %0@+\n\t"
- "1: lsrl #1,%1 ; jcc 1f ; clrl %0@+\n\t"
- "1: lsrl #1,%1 ; jcc 1f ; clrl %0@+ ; clrl %0@+\n\t"
- "1:"
- : "=a" (s), "=d" (count)
- : "0" (s), "1" (count)
- );
- } else {
- long tmp;
- __asm__ __volatile__(
- "movel %1,%2\n\t"
- "lsrl #1,%2 ; jcc 1f ; clrb %0@+ ; subqw #1,%1\n\t"
- "lsrl #1,%2 ; jcs 2f\n\t" /* %0 increased=>bit 2 switched*/
- "clrw %0@+ ; subqw #2,%1 ; jra 2f\n\t"
- "1: lsrl #1,%2 ; jcc 2f\n\t"
- "clrw %0@+ ; subqw #2,%1\n\t"
- "2: movew %1,%2; lsrl #2,%1 ; jeq 6f\n\t"
- "lsrl #1,%1 ; jcc 3f ; clrl %0@+\n\t"
- "3: lsrl #1,%1 ; jcc 4f ; clrl %0@+ ; clrl %0@+\n\t"
- "4: subql #1,%1 ; jcs 6f\n\t"
- "5: clrl %0@+; clrl %0@+ ; clrl %0@+ ; clrl %0@+\n\t"
- "dbra %1,5b ; clrw %1; subql #1,%1; jcc 5b\n\t"
- "6: movew %2,%1; btst #1,%1 ; jeq 7f ; clrw %0@+\n\t"
- "7: ; btst #0,%1 ; jeq 8f ; clrb %0@+\n\t"
- "8:"
- : "=a" (s), "=d" (count), "=d" (tmp)
- : "0" (s), "1" (count)
- );
- }
-
- return(0);
-}
-
-
-static __inline__ void *mymemset(void *s, size_t count)
-{
- if (!count)
- return(0);
-
- __asm__ __volatile__(
- "lsrl #1,%1 ; jcc 1f ; moveb %2,%0@-\n\t"
- "1: lsrl #1,%1 ; jcc 1f ; movew %2,%0@-\n\t"
- "1: lsrl #1,%1 ; jcc 1f ; movel %2,%0@-\n\t"
- "1: lsrl #1,%1 ; jcc 1f ; movel %2,%0@- ; movel %2,%0@-\n\t"
- "1: subql #1,%1 ; jcs 3f\n\t"
- "2: moveml %2/%3/%4/%5,%0@-\n\t"
- "dbra %1,2b\n\t"
- "3:"
- : "=a" (s), "=d" (count)
- : "d" (-1), "d" (-1), "d" (-1), "d" (-1),
- "0" ((char *) s + count), "1" (count)
- );
-
- return(0);
-}
-
-
-static __inline__ void *mymemmove(void *d, const void *s, size_t count)
-{
- if (d < s) {
- if (count < 16) {
- __asm__ __volatile__(
- "lsrl #1,%2 ; jcc 1f ; moveb %1@+,%0@+\n\t"
- "1: lsrl #1,%2 ; jcc 1f ; movew %1@+,%0@+\n\t"
- "1: lsrl #1,%2 ; jcc 1f ; movel %1@+,%0@+\n\t"
- "1: lsrl #1,%2 ; jcc 1f ; movel %1@+,%0@+ ; movel %1@+,%0@+\n\t"
- "1:"
- : "=a" (d), "=a" (s), "=d" (count)
- : "0" (d), "1" (s), "2" (count)
- );
- } else {
- long tmp;
- __asm__ __volatile__(
- "movel %0,%3\n\t"
- "lsrl #1,%3 ; jcc 1f ; moveb %1@+,%0@+ ; subqw #1,%2\n\t"
- "lsrl #1,%3 ; jcs 2f\n\t" /* %0 increased=>bit 2 switched*/
- "movew %1@+,%0@+ ; subqw #2,%2 ; jra 2f\n\t"
- "1: lsrl #1,%3 ; jcc 2f\n\t"
- "movew %1@+,%0@+ ; subqw #2,%2\n\t"
- "2: movew %2,%-; lsrl #2,%2 ; jeq 6f\n\t"
- "lsrl #1,%2 ; jcc 3f ; movel %1@+,%0@+\n\t"
- "3: lsrl #1,%2 ; jcc 4f ; movel %1@+,%0@+ ; movel %1@+,%0@+\n\t"
- "4: subql #1,%2 ; jcs 6f\n\t"
- "5: movel %1@+,%0@+;movel %1@+,%0@+\n\t"
- "movel %1@+,%0@+;movel %1@+,%0@+\n\t"
- "dbra %2,5b ; clrw %2; subql #1,%2; jcc 5b\n\t"
- "6: movew %+,%2; btst #1,%2 ; jeq 7f ; movew %1@+,%0@+\n\t"
- "7: ; btst #0,%2 ; jeq 8f ; moveb %1@+,%0@+\n\t"
- "8:"
- : "=a" (d), "=a" (s), "=d" (count), "=d" (tmp)
- : "0" (d), "1" (s), "2" (count)
- );
- }
- } else {
- if (count < 16) {
- __asm__ __volatile__(
- "lsrl #1,%2 ; jcc 1f ; moveb %1@-,%0@-\n\t"
- "1: lsrl #1,%2 ; jcc 1f ; movew %1@-,%0@-\n\t"
- "1: lsrl #1,%2 ; jcc 1f ; movel %1@-,%0@-\n\t"
- "1: lsrl #1,%2 ; jcc 1f ; movel %1@-,%0@- ; movel %1@-,%0@-\n\t"
- "1:"
- : "=a" (d), "=a" (s), "=d" (count)
- : "0" ((char *) d + count), "1" ((char *) s + count), "2" (count)
- );
- } else {
- long tmp;
- __asm__ __volatile__(
- "movel %0,%3\n\t"
- "lsrl #1,%3 ; jcc 1f ; moveb %1@-,%0@- ; subqw #1,%2\n\t"
- "lsrl #1,%3 ; jcs 2f\n\t" /* %0 increased=>bit 2 switched*/
- "movew %1@-,%0@- ; subqw #2,%2 ; jra 2f\n\t"
- "1: lsrl #1,%3 ; jcc 2f\n\t"
- "movew %1@-,%0@- ; subqw #2,%2\n\t"
- "2: movew %2,%-; lsrl #2,%2 ; jeq 6f\n\t"
- "lsrl #1,%2 ; jcc 3f ; movel %1@-,%0@-\n\t"
- "3: lsrl #1,%2 ; jcc 4f ; movel %1@-,%0@- ; movel %1@-,%0@-\n\t"
- "4: subql #1,%2 ; jcs 6f\n\t"
- "5: movel %1@-,%0@-;movel %1@-,%0@-\n\t"
- "movel %1@-,%0@-;movel %1@-,%0@-\n\t"
- "dbra %2,5b ; clrw %2; subql #1,%2; jcc 5b\n\t"
- "6: movew %+,%2; btst #1,%2 ; jeq 7f ; movew %1@-,%0@-\n\t"
- "7: ; btst #0,%2 ; jeq 8f ; moveb %1@-,%0@-\n\t"
- "8:"
- : "=a" (d), "=a" (s), "=d" (count), "=d" (tmp)
- : "0" ((char *) d + count), "1" ((char *) s + count), "2" (count)
- );
- }
- }
-
- return(0);
-}
-
-
-/* ++andreas: Simple and fast version of memmove, assumes size is
- divisible by 16, suitable for moving the whole screen bitplane */
-static __inline__ void fast_memmove(char *dst, const char *src, size_t size)
-{
- if (!size)
- return;
- if (dst < src)
- __asm__ __volatile__
- ("1:"
- " moveml %0@+,%/d0/%/d1/%/a0/%/a1\n"
- " moveml %/d0/%/d1/%/a0/%/a1,%1@\n"
- " addql #8,%1; addql #8,%1\n"
- " dbra %2,1b\n"
- " clrw %2; subql #1,%2\n"
- " jcc 1b"
- : "=a" (src), "=a" (dst), "=d" (size)
- : "0" (src), "1" (dst), "2" (size / 16 - 1)
- : "d0", "d1", "a0", "a1", "memory");
- else
- __asm__ __volatile__
- ("1:"
- " subql #8,%0; subql #8,%0\n"
- " moveml %0@,%/d0/%/d1/%/a0/%/a1\n"
- " moveml %/d0/%/d1/%/a0/%/a1,%1@-\n"
- " dbra %2,1b\n"
- " clrw %2; subql #1,%2\n"
- " jcc 1b"
- : "=a" (src), "=a" (dst), "=d" (size)
- : "0" (src + size), "1" (dst + size), "2" (size / 16 - 1)
- : "d0", "d1", "a0", "a1", "memory");
-}
-
-#else /* !m68k */
-
- /*
- * Anyone who'd like to write asm functions for other CPUs?
- */
-
-static __inline__ void *mymemclear_small(void *s, size_t count)
-{
- return(memset(s, 0, count));
-}
-
-static __inline__ void *mymemclear(void *s, size_t count)
-{
- return(memset(s, 0, count));
-}
-
-static __inline__ void *mymemset(void *s, size_t count)
-{
- return(memset(s, 255, count));
-}
-
-#ifdef __i386__
-static __inline__ void fast_memmove(void *d, const void *s, size_t count)
-{
- if (d < s) {
-__asm__ __volatile__ (
- "cld\n\t"
- "shrl $1,%%ecx\n\t"
- "jnc 1f\n\t"
- "movsb\n"
- "1:\tshrl $1,%%ecx\n\t"
- "jnc 2f\n\t"
- "movsw\n"
- "2:\trep\n\t"
- "movsl"
- : /* no output */
- :"c"(count),"D"((long)d),"S"((long)s)
- :"cx","di","si","memory");
- } else {
-__asm__ __volatile__ (
- "std\n\t"
- "shrl $1,%%ecx\n\t"
- "jnc 1f\n\t"
- "movb 3(%%esi),%%al\n\t"
- "movb %%al,3(%%edi)\n\t"
- "decl %%esi\n\t"
- "decl %%edi\n"
- "1:\tshrl $1,%%ecx\n\t"
- "jnc 2f\n\t"
- "movw 2(%%esi),%%ax\n\t"
- "movw %%ax,2(%%edi)\n\t"
- "decl %%esi\n\t"
- "decl %%edi\n\t"
- "decl %%esi\n\t"
- "decl %%edi\n"
- "2:\trep\n\t"
- "movsl"
- : /* no output */
- :"c"(count),"D"(count-4+(long)d),"S"(count-4+(long)s)
- :"ax","cx","di","si","memory");
- }
-}
-
-static __inline__ void *mymemmove(char *dst, const char *src, size_t size)
-{
- fast_memmove(dst, src, size);
- return dst;
-}
-#else
-static __inline__ void *mymemmove(void *d, const void *s, size_t count)
-{
- return(memmove(d, s, count));
-}
-
-static __inline__ void fast_memmove(char *dst, const char *src, size_t size)
-{
- memmove(dst, src, size);
-}
-#endif /* !i386 */
-
-#endif /* !m68k */
-
-#endif /* __VIDEO_FBCON_H */
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