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); }