static void
removeIOSmem(void)
{
smem_create(NULL, (char *) ioBase, 0, SM_DETACH);
smem_remove("IOBASE");
ioBase = MAP_FAILED;
}
Bool
SDL_NAME(XF86DGADirectVideo)(
Display *dis,
int screen,
int enable
){
ScrPtr sp;
MapPtr mp = NULL;
if ((sp = FindScr(dis, screen)))
mp = sp->map;
if (enable & XF86DGADirectGraphics) {
#if !defined(ISC) && !defined(HAS_SVR3_MMAP) && !defined(Lynx) \
&& !defined(__EMX__)
if (mp && mp->vaddr)
mprotect(mp->vaddr, mp->size + mp->delta, PROT_READ | PROT_WRITE);
#endif
} else {
#if !defined(ISC) && !defined(HAS_SVR3_MMAP) && !defined(Lynx) \
&& !defined(__EMX__)
if (mp && mp->vaddr)
mprotect(mp->vaddr, mp->size + mp->delta, PROT_READ);
#elif defined(Lynx)
/* XXX this doesn't allow enable after disable */
smem_create(NULL, mp->vaddr, mp->size + mp->delta, SM_DETACH);
smem_remove("XF86DGA");
#endif
}
SDL_NAME(XF86DGADirectVideoLL)(dis, screen, enable);
return 1;
}
static void
UnMapVidMem(int ScreenNum, pointer Base, unsigned long Size)
{
int i;
xf86MsgVerb(X_INFO, 3, "UnMapVidMem: Base/Ptr=0x%x Size=0x%x\n",
Base, Size);
for (i = 0; i < MAX_SMEMS; i++)
{
if (*smems[i].name && smems[i].ptr == Base
&& smems[i].Size == Size)
{
if (--smems[i].RefCnt > 0)
return;
(void)smem_create(NULL, smems[i].ptr, 0, SM_DETACH);
xf86MsgVerb(X_INFO, 3,
"UnMapVidMem: smem_create(%s, 0x%08x, ... "
"SM_DETACH)\n", smems[i].name, smems[i].ptr);
(void)smem_remove(smems[i].name);
*smems[i].name = '\0';
smems[i].RefCnt = 0;
return;
}
}
xf86MsgVerb(X_WARNING, 2,
"UnMapVidMem: no SMEM found for Base = %lx Size = %lx\n",
Base, Size);
}
static void
smemCleanup(void)
{
int i;
for (i = 0; i < MAX_SMEMS; i++) {
if (*smems[i].name && smems[i].ptr) {
(void)smem_create(NULL, smems[i].ptr, 0, SM_DETACH);
(void)smem_remove(smems[i].name);
*smems[i].name = '\0';
smems[i].ptr = NULL;
smems[i].Base = 0;
smems[i].Size = 0;
smems[i].RefCnt = 0;
}
}
}
int main() {
one = 1;
if (!(mem24=(int)smem_create("MEM24",(char *)(CPUADDR&~0xFFF),0x4,
SM_WRITE | SM_READ))){
fprintf(stderr,"Unable to allocate MEM window for slave A24 memory");
exit(0);
}
p = (long *)(mem24 | (CPUADDR&0xFFF)); /*Location for VMEjump*/
dts=swap(*p);
printf("Message box(4): VMEjump status was : 0x%x \n",dts);
*p = swap(1);
dts=swap(*p);
printf("Message box(4): VMEjump status is now : 0x%x \n",dts);
printf("VME eventbuilder is leaving infinite eventloop...\n");
smem_create("MEM24",(char *)mem24,0x4,SM_DETACH);
smem_remove("MEM24");
return;
}
static inline void disable_os_io(void)
{
smem_create(NULL, (char *) pciConfBase, 0, SM_DETACH);
smem_remove("PCI-CONF");
pciConfBase = NULL;
}
static pointer
MapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
{
static int once;
int free_slot = -1;
int i;
if (!once)
{
atexit(smemCleanup);
once = 1;
}
for (i = 0; i < MAX_SMEMS; i++)
{
if (!*smems[i].name && free_slot == -1)
free_slot = i;
if (smems[i].Base == Base && smems[i].Size == Size
&& *smems[i].name) {
smems[i].RefCnt++;
return smems[i].ptr;
}
}
if (i == MAX_SMEMS && free_slot == -1)
{
FatalError("MapVidMem: failed to smem_create Base %x Size %x (out of SMEMS entries)\n",
Base, Size);
}
i = free_slot;
sprintf(smems[i].name, "Video-%d", i);
smems[i].Base = Base;
smems[i].Size = Size;
xf86MsgVerb(X_INFO, 3, "MapVidMem: Base=0x%x Size=0x%x\n",
Base, Size);
#if defined(__powerpc__)
if (((unsigned long)Base & PHYS_IO_MEM_START) != PHYS_IO_MEM_START) {
Base = Base | PHYS_IO_MEM_START;
}
#endif
smems[i].ptr = smem_create(smems[i].name, (char *)Base, Size, SM_READ|SM_WRITE);
smems[i].RefCnt = 1;
if (smems[i].ptr == NULL)
{
/* check if there is a stale segment around */
if (smem_remove(smems[i].name) == 0) {
xf86Msg(X_INFO,
"MapVidMem: removed stale smem_ segment %s\n",
smems[i].name);
smems[i].ptr = smem_create(smems[i].name,
(char *)Base, Size, SM_READ|SM_WRITE);
}
if (smems[i].ptr == NULL) {
*smems[i].name = '\0';
FatalError("MapVidMem: failed to smem_create Base %x Size %x (%s)\n",
Base, Size, strerror(errno));
}
}
xf86MsgVerb(X_INFO, 3, "MapVidMem: Base=0x%x Size=0x%x Ptr=0x%x\n",
Base, Size, smems[i].ptr);
return smems[i].ptr;
}