void *map_phys_mem(unsigned long base, unsigned long size)
{
#ifdef ARCH_ALPHA
/* TODO: move it into sysdep */
base += bus_base();
#endif
if( devmem_fd == -1)
{
if ( (devmem_fd = open("/dev/dhahelper",O_RDWR)) < 0)
{
if ( (devmem_fd = open(DEV_MEM,O_RDWR)) == -1)
{
perror("libdha: open(/dev/mem) failed");
exit(1);
}
}
}
devmem_locks++;
return mmap(0,size,PROT_READ|PROT_WRITE,MAP_SHARED,devmem_fd,base) ;
}
void *map_phys_mem(unsigned long base, unsigned long size)
{
#if ARCH_ALPHA
/* TODO: move it into sysdep */
base += bus_base();
#endif
#ifdef CONFIG_SVGAHELPER
if ( (mem_fd = open(DEV_SVGA,O_RDWR)) == -1) {
perror("libdha: SVGAlib kernelhelper failed");
#ifdef CONFIG_DHAHELPER
goto dha_helper_way;
#else
goto dev_mem_way;
#endif
}
else
goto mmap;
#endif
#ifdef CONFIG_DHAHELPER
#ifdef CONFIG_SVGAHELPER
dha_helper_way:
#endif
if ( (mem_fd = open("/dev/dhahelper",O_RDWR)) < 0)
{
perror("libdha: DHA kernelhelper failed");
goto dev_mem_way;
}
else
{
dhahelper_memory_t mem_req;
mem_req.operation = MEMORY_OP_MAP;
mem_req.start = base;
mem_req.offset = 0;
mem_req.size = size;
if (ioctl(mem_fd, DHAHELPER_MEMORY, &mem_req) < 0)
{
perror("libdha: DHA kernelhelper failed");
close(mem_fd);
goto dev_mem_way;
}
else
goto mmap;
}
#endif
#if defined(CONFIG_DHAHELPER) || defined (CONFIG_SVGAHELPER)
dev_mem_way:
#endif
#ifdef DEV_APERTURE
if ((mem_fd = open(DEV_APERTURE, O_RDWR)) == -1)
perror("libdha: opening aperture failed");
else {
void *p = mmap(0,size,PROT_READ|PROT_WRITE,MAP_SHARED,mem_fd,base);
if (p == MAP_FAILED) {
perror("libdha: mapping aperture failed");
close(mem_fd);
} else
return p;
}
#endif
if ( (mem_fd = open(DEV_MEM,O_RDWR)) == -1)
{
perror("libdha: opening /dev/mem failed");
return MAP_FAILED;
}
#if defined(CONFIG_DHAHELPER) || defined (CONFIG_SVGAHELPER)
mmap:
#endif
return mmap(0,size,PROT_READ|PROT_WRITE,MAP_SHARED,mem_fd,base);
}
