diff options
Diffstat (limited to 'linux/vbelib.c')
-rw-r--r-- | linux/vbelib.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/linux/vbelib.c b/linux/vbelib.c index b2376ef06d..49cbe0b43f 100644 --- a/linux/vbelib.c +++ b/linux/vbelib.c @@ -13,7 +13,12 @@ #include <string.h> #include <stdio.h> #include <sys/io.h> +#include <sys/mman.h> +#include <sys/types.h> +#include <sys/stat.h> #include <ctype.h> +#include <unistd.h> +#include <fcntl.h> static struct VesaProtModeInterface vbe_pm_info; @@ -84,6 +89,7 @@ static inline int VBE_LRMI_int(int int_no, struct LRMI_regs *r) #endif static unsigned hh_int_10_seg; +static int fd_mem; int vbeInit( void ) { unsigned short iopl_port; @@ -106,10 +112,15 @@ int vbeInit( void ) while((iopl_port=vbe_pm_info.iopl_ports[i]) != 0xFFFF && vbe_pm_info.iopl_ports[i++] > 1023) ioperm(iopl_port,1,1); iopl(3); + fd_mem = open("/dev/mem",O_RDWR); return VBE_OK; } -int vbeDestroy( void ) { return VBE_OK; } +int vbeDestroy( void ) +{ + close(fd_mem); + return VBE_OK; +} /* Fixme!!! This code is compatible only with mplayer's version of lrmi*/ static inline int is_addr_valid(const void *p) @@ -507,3 +518,19 @@ int vbeWriteString(int x, int y, int attr, char *str) if(retval == 0x4f) retval = VBE_OK; return retval; } + +void * vbeMapVideoBuffer(unsigned long phys_addr,unsigned long size) +{ + void *lfb; + if(fd_mem == -1) return NULL; + if(verbose > 1) printf("vbelib: vbeMapVideoBuffer(%08lX,%08lX)\n",phys_addr,size); + /* Here we don't need with MAP_FIXED and prefered address (first argument) */ + lfb = mmap((void *)0,size,PROT_READ | PROT_WRITE,MAP_SHARED,fd_mem,phys_addr); + return lfb == (void *)-1 ? 0 : lfb; +} + +void vbeUnmapVideoBuffer(unsigned long linear_addr,unsigned long size) +{ + if(verbose > 1) printf("vbelib: vbeUnmapVideoBuffer(%08lX,%08lX)\n",linear_addr,size); + munmap((void *)linear_addr,size); +} |