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xfree86: drop unused xf86SetReallySlowBcopy()

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This had been introduced almost two decades ago, by Dave Airlie (*1) along
with some major IO speed improvement, just in case some driver still needed
the old behaviour - in that case it would call xf86SetReallySlowBcopy(),
so xf86SlowBcopy() would fall back to the old approach emitting an extra
outb() on debug port, in order to slow things down more.

Now aeons have passed and there doesn't seem to be any actual user for this,
so it's time to drop that ancient relic.

*1) commit e717eb82dc

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1402>
(cherry picked from commit ba870af892)
This commit is contained in:
Enrico Weigelt, metux IT consult 2024-03-13 16:34:28 +01:00 • committed by Alan Coopersmith
parent e6ca239aa7
commit e405ba7a34
2 changed files with 0 additions and 26 deletions
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25
hw/xfree86/os-support/misc/SlowBcopy.c
View file

@ -22,35 +22,10 @@
#include "xf86_OSlib.h"
#include "compiler.h"
static int really_slow_bcopy;
void
xf86SetReallySlowBcopy(void)
{
really_slow_bcopy = 1;
}
#if defined(__i386__) || defined(__amd64__)
static void
xf86_really_slow_bcopy(unsigned char *src, unsigned char *dst, int len)
{
while (len--) {
*dst++ = *src++;
outb(0x80, 0x00);
}
}
#endif
/* The outb() isn't needed on my machine, but who knows ... -- ost */
void
xf86SlowBcopy(unsigned char *src, unsigned char *dst, int len)
{
#if defined(__i386__) || defined(__amd64__)
if (really_slow_bcopy) {
xf86_really_slow_bcopy(src, dst, len);
return;
}
#endif
while (len--)
*dst++ = *src++;
}

1
hw/xfree86/os-support/xf86_OSproc.h
View file

@ -119,7 +119,6 @@ extern _X_EXPORT void xf86SetTVOut(int);
extern _X_EXPORT void xf86SetRGBOut(void);
#endif
extern _X_EXPORT void xf86OSRingBell(int, int, int);
extern _X_EXPORT void xf86SetReallySlowBcopy(void);
extern _X_EXPORT void xf86SlowBcopy(unsigned char *, unsigned char *, int);
extern _X_EXPORT int xf86OpenSerial(XF86OptionPtr options);
extern _X_EXPORT int xf86SetSerial(int fd, XF86OptionPtr options);