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Death to mfb.

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Anyone still interested in 1 or 4 bpp framebuffers, talk to fb.
This commit is contained in:
Adam Jackson
2008-06-13 10:35:07 -04:00
parent af86c3b7ce
commit f31bd087e8
100 changed files with 8 additions and 26217 deletions
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176
include/servermd.h
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@@ -48,6 +48,11 @@ SOFTWARE.
#ifndef SERVERMD_H
#define SERVERMD_H 1
/*
* Note: much of this is vestigial from mfb/cfb times. This should
* really be simplified even further.
*/
/*
* Machine dependent values:
* GLYPHPADBYTES should be chosen with consideration for the space-time
@@ -61,63 +66,6 @@ SOFTWARE.
* compiler what kind of padding you want because its defines are
* kept separate from this. See server/include/font.h for how
* GLYPHPADBYTES is used.
*
* Along with this, you should choose an appropriate value for
* GETLEFTBITS_ALIGNMENT, which is used in ddx/mfb/maskbits.h. This
* constant choses what kind of memory references are guarenteed during
* font access; either 1, 2 or 4, for byte, word or longword access,
* respectively. For instance, if you have decided to to have
* GLYPHPADBYTES == 4, then it is pointless for you to have a
* GETLEFTBITS_ALIGNMENT > 1, because the padding of the fonts has already
* guarenteed you that your fonts are longword aligned. On the other
* hand, even if you have chosen GLYPHPADBYTES == 1 to save space, you may
* also decide that the computing involved in aligning the pointer is more
* costly than an odd-address access; you choose GETLEFTBITS_ALIGNMENT == 1.
*
* Next, choose the tuning parameters which are appropriate for your
* hardware; these modify the behaviour of the raw frame buffer code
* in ddx/mfb and ddx/cfb. Defining these incorrectly will not cause
* the server to run incorrectly, but defining these correctly will
* cause some noticeable speed improvements:
*
* AVOID_MEMORY_READ - (8-bit cfb only)
* When stippling pixels on the screen (polytext and pushpixels),
* don't read long words from the display and mask in the
* appropriate values. Rather, perform multiple byte/short/long
* writes as appropriate. This option uses many more instructions
* but runs much faster when the destination is much slower than
* the CPU and at least 1 level of write buffer is availible (2
* is much better). Defined currently for SPARC and MIPS.
*
* FAST_CONSTANT_OFFSET_MODE - (cfb and mfb)
* This define is used on machines which have no auto-increment
* addressing mode, but do have an effectively free constant-offset
* addressing mode. Currently defined for MIPS and SPARC, even though
* I remember the cg6 as performing better without it (cg3 definitely
* performs better with it).
*
* LARGE_INSTRUCTION_CACHE -
* This define increases the number of times some loops are
* unrolled. On 68020 machines (with 256 bytes of i-cache),
* this define will slow execution down as instructions miss
* the cache frequently. On machines with real i-caches, this
* reduces loop overhead, causing a slight performance improvement.
* Currently defined for MIPS and SPARC
*
* FAST_UNALIGNED_READS -
* For machines with more memory bandwidth than CPU, this
* define uses unaligned reads for 8-bit BitBLT instead of doing
* aligned reads and combining the results with shifts and
* logical-ors. Currently defined for 68020 and vax.
* PLENTIFUL_REGISTERS -
* For machines with > 20 registers. Currently used for
* unrolling the text painting code a bit more. Currently
* defined for MIPS.
* SHARED_IDCACHE -
* For non-Harvard RISC machines, those which share the same
* CPU memory bus for instructions and data. This unrolls some
* solid fill loops which are otherwise best left rolled up.
* Currently defined for SPARC.
*/
#ifdef vax
@@ -125,8 +73,6 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER LSBFirst /* Values for the VAX only */
#define BITMAP_BIT_ORDER LSBFirst
#define GLYPHPADBYTES 1
#define GETLEFTBITS_ALIGNMENT 4
#define FAST_UNALIGNED_READS
#endif /* vax */
@@ -135,8 +81,6 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#define AVOID_MEMORY_READ
#endif /* __avr32__ */
@@ -155,9 +99,6 @@ SOFTWARE.
# endif
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#define LARGE_INSTRUCTION_CACHE
#define AVOID_MEMORY_READ
#endif /* __arm32__ */
@@ -166,13 +107,7 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4 /* to make fb work */
#define GETLEFTBITS_ALIGNMENT 1 /* PA forces longs to 4 */
/* byte boundries */
#define AVOID_MEMORY_READ
#define FAST_CONSTANT_OFFSET_MODE
#define LARGE_INSTRUCTION_CACHE
#define PLENTIFUL_REGISTERS
#endif /* hpux || __hppa__ */
#if defined(__powerpc__) || defined(__ppc__)
@@ -180,20 +115,12 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
/* XXX Should this be for Lynx only? */
#ifdef Lynx
#define BITMAP_SCANLINE_UNIT 8
#endif
#define LARGE_INSTRUCTION_CACHE
#define FAST_CONSTANT_OFFSET_MODE
#define PLENTIFUL_REGISTERS
#define AVOID_MEMORY_READ
#define FAST_MEMCPY
#endif /* PowerPC */
#if defined(__sh__)
@@ -202,19 +129,12 @@ SOFTWARE.
# define IMAGE_BYTE_ORDER MSBFirst
# define BITMAP_BIT_ORDER MSBFirst
# define GLYPHPADBYTES 4
# define GETLEFTBITS_ALIGNMENT 1
#else
# define IMAGE_BYTE_ORDER LSBFirst
# define BITMAP_BIT_ORDER LSBFirst
# define GLYPHPADBYTES 4
# define GETLEFTBITS_ALIGNMENT 1
#endif
#define AVOID_MEMORY_READ
#define FAST_CONSTANT_OFFSET_MODE
#define LARGE_INSTRUCTION_CACHE
#define PLENTIFUL_REGISTERS
#endif /* SuperH */
#if defined(__m32r__)
@@ -223,19 +143,12 @@ SOFTWARE.
# define IMAGE_BYTE_ORDER MSBFirst
# define BITMAP_BIT_ORDER MSBFirst
# define GLYPHPADBYTES 4
# define GETLEFTBITS_ALIGNMENT 1
#else
# define IMAGE_BYTE_ORDER LSBFirst
# define BITMAP_BIT_ORDER LSBFirst
# define GLYPHPADBYTES 4
# define GETLEFTBITS_ALIGNMENT 1
#endif
#define AVOID_MEMORY_READ
#define FAST_CONSTANT_OFFSET_MODE
#define LARGE_INSTRUCTION_CACHE
#define PLENTIFUL_REGISTERS
#endif /* __m32r__ */
#if (defined(sun) && (defined(__sparc) || defined(sparc))) || \
@@ -256,37 +169,15 @@ SOFTWARE.
# define BITMAP_BIT_ORDER MSBFirst
#endif
#ifdef sparc
# define AVOID_MEMORY_READ
# define LARGE_INSTRUCTION_CACHE
# define FAST_CONSTANT_OFFSET_MODE
# define SHARED_IDCACHE
#endif
#ifdef mc68020
#define FAST_UNALIGNED_READS
#endif
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#endif /* sun && !(i386 && SVR4) */
#if defined(AIXV3)
#define IMAGE_BYTE_ORDER MSBFirst /* Values for the RISC/6000 */
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#define LARGE_INSTRUCTION_CACHE
#define FAST_CONSTANT_OFFSET_MODE
#define PLENTIFUL_REGISTERS
#define AVOID_MEMORY_READ
#define FAST_MEMCPY
#endif /* AIXV3 */
#if defined(ibm032) || defined (ibm)
@@ -297,7 +188,6 @@ SOFTWARE.
#endif
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 1
#define GETLEFTBITS_ALIGNMENT 4
/* ibm pcc doesn't understand pragmas. */
#ifdef __i386__
@@ -311,9 +201,6 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst /* Values for Pegasus only */
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#define FAST_UNALIGNED_READS
#endif /* tektronix */
@@ -322,9 +209,6 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst /* Values for the MacII only */
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
/* might want FAST_UNALIGNED_READS for frame buffers with < 1us latency */
#endif /* macII */
@@ -334,19 +218,12 @@ SOFTWARE.
# define IMAGE_BYTE_ORDER LSBFirst /* Values for the PMAX only */
# define BITMAP_BIT_ORDER LSBFirst
# define GLYPHPADBYTES 4
# define GETLEFTBITS_ALIGNMENT 1
#else
# define IMAGE_BYTE_ORDER MSBFirst /* Values for the MIPS only */
# define BITMAP_BIT_ORDER MSBFirst
# define GLYPHPADBYTES 4
# define GETLEFTBITS_ALIGNMENT 1
#endif
#define AVOID_MEMORY_READ
#define FAST_CONSTANT_OFFSET_MODE
#define LARGE_INSTRUCTION_CACHE
#define PLENTIFUL_REGISTERS
#endif /* mips */
#if defined(__alpha) || defined(__alpha__) || defined(__alphaCross)
@@ -363,10 +240,6 @@ SOFTWARE.
# endif
# define GLYPHPADBYTES 4
# define GETLEFTBITS_ALIGNMENT 1
# define FAST_CONSTANT_OFFSET_MODE
# define LARGE_INSTRUCTION_CACHE
# define PLENTIFUL_REGISTERS
#endif /* alpha */
@@ -375,15 +248,10 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#define BITMAP_SCANLINE_UNIT 8
#define LARGE_INSTRUCTION_CACHE
#define FAST_CONSTANT_OFFSET_MODE
#define FAST_UNALIGNED_READ
#define FAST_MEMCPY
#endif /* linux/s390 */
#if defined (linux) && defined (__s390x__)
@@ -391,14 +259,10 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#define BITMAP_SCANLINE_UNIT 8
#define LARGE_INSTRUCTION_CACHE
#define FAST_CONSTANT_OFFSET_MODE
#define FAST_UNALIGNED_READ
#define FAST_MEMCPY
#endif /* linux/s390x */
@@ -416,10 +280,6 @@ SOFTWARE.
# endif
# define GLYPHPADBYTES 4
# define GETLEFTBITS_ALIGNMENT 1
# define FAST_CONSTANT_OFFSET_MODE
# define LARGE_INSTRUCTION_CACHE
# define PLENTIFUL_REGISTERS
#endif /* ia64 */
@@ -437,11 +297,7 @@ SOFTWARE.
# endif
# define GLYPHPADBYTES 4
# define GETLEFTBITS_ALIGNMENT 1
# define LARGE_INSTRUCTION_CACHE
# define FAST_CONSTANT_OFFSET_MODE
/* ???? */
# define FAST_UNALIGNED_READS
#endif /* AMD64 */
#ifdef stellar
@@ -449,7 +305,6 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst /* Values for the stellar only*/
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 4
#define IMAGE_BUFSIZE (64*1024)
/*
* Use SysV random number generator.
@@ -463,14 +318,6 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst /* Values for the OMRON only*/
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#ifndef mc68000
#define FAST_CONSTANT_OFFSET_MODE
#define AVOID_MEMORY_READ
#define LARGE_INSTRUCTION_CACHE
#define PLENTIFUL_REGISTERS
#endif
#endif /* luna */
@@ -501,12 +348,8 @@ SOFTWARE.
#define GLYPHPADBYTES 4
#endif
#define GETLEFTBITS_ALIGNMENT 1
#define AVOID_MEMORY_READ
#ifdef XSVGA
#define AVOID_GLYPHBLT
#define FAST_CONSTANT_OFFSET_MODE
#define FAST_MEMCPY
#define NO_ONE_RECT
#endif
@@ -516,9 +359,7 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst
#define BITMAP_BIT_ORDER MSBFirst
#define FAST_UNALIGNED_READS
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#endif /* linux/m68k */
@@ -527,11 +368,6 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#define AVOID_MEMORY_READ
#define FAST_CONSTANT_OFFSET_MODE
#define LARGE_INSTRUCTION_CACHE
#define PLENTIFUL_REGISTERS
#endif
@@ -540,7 +376,6 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER LSBFirst
#define BITMAP_BIT_ORDER LSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#endif
/* linux on IBM S/390 */
@@ -548,7 +383,6 @@ SOFTWARE.
#define IMAGE_BYTE_ORDER MSBFirst
#define BITMAP_BIT_ORDER MSBFirst
#define GLYPHPADBYTES 4
#define GETLEFTBITS_ALIGNMENT 1
#endif /* linux/s390 */
/* size of buffer to use with GetImage, measured in bytes. There's obviously