andreacavalli
/
xserver-multidpi
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Fix breakage on alpha caused by c7680befe5 

Pinpointed by by Michael Cree.

Commit c7680befe5 removed Jensen support, but at the same time broke
support for dense memory systems.

Signed-off-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Matt Turner 2009-10-06 20:58:30 -04:00
parent aa07957373
commit 9625f6d328
1 changed files with 37 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
hw/xfree86/os-support/misc/SlowBcopy.c
View File

@ -59,10 +59,16 @@ xf86SlowBcopy(unsigned char *src, unsigned char *dst, int len)
#ifdef linux
unsigned long _bus_base(void);
#define useSparse() (!_bus_base())
#define SPARSE (7)
#else
#define useSparse() 0
#define SPARSE 0
#endif
@ -70,32 +76,42 @@ xf86SlowBcopy(unsigned char *src, unsigned char *dst, int len)
void
xf86SlowBCopyFromBus(unsigned char *src, unsigned char *dst, int count)
{
unsigned long addr;
long result;
if (useSparse())
{
unsigned long addr;
long result;
addr = (unsigned long) src;
while( count ){
result = *(volatile int *) addr;
result >>= ((addr>>SPARSE) & 3) * 8;
*dst++ = (unsigned char) (0xffUL & result);
addr += 1<<SPARSE;
count--;
outb(0x80, 0x00);
}
addr = (unsigned long) src;
while (count) {
result = *(volatile int *) addr;
result >>= ((addr>>SPARSE) & 3) * 8;
*dst++ = (unsigned char) (0xffUL & result);
addr += 1<<SPARSE;
count--;
outb(0x80, 0x00);
}
}
else
xf86SlowBcopy(src, dst, count);
}
void
xf86SlowBCopyToBus(unsigned char *src, unsigned char *dst, int count)
{
unsigned long addr;
if (useSparse())
{
unsigned long addr;
addr = (unsigned long) dst;
while(count) {
*(volatile unsigned int *) addr = (unsigned short)(*src) * 0x01010101;
src++;
addr += 1<<SPARSE;
count--;
outb(0x80, 0x00);
}
addr = (unsigned long) dst;
while (count) {
*(volatile unsigned int *) addr = (unsigned short)(*src) * 0x01010101;
src++;
addr += 1<<SPARSE;
count--;
outb(0x80, 0x00);
}
}
else
xf86SlowBcopy(src, dst, count);
}
#endif