return mmap_device_io(len, io); } void iowrite16( uint16_t val, uintptr_t port ){ out16(port, val); } uint_t ioread16(uintptr_t port){ return in16(port); } void ssleep(unsigned int seconds){ sleep(seconds); } void iowrite32(uint32_t val, uintptr_t port){...
typedefstruct_iofunc_attr{IOFUNC_MOUNT_T*mount;uint32_tflags;int32_tlock_tid;uint16_tlock_count;uint16_tcount;uint16_trcount;uint16_twcount;uint16_trlocks;uint16_twlocks;struct_iofunc_mmap_list*mmap_list;struct_iofunc_lock_list*lock_list;void*list;uint32_tlist_size;off_tnbytes;ino_tin...
#include <sys/neutrino.h> // for ThreadCtl() #include <sys/mman.h> // for mmap_device_io() #include <sys/siginfo.h> // for sigevent and signal handling #include "types.h" /* The Neutrino IO port used here corresponds to a single register, which is * one byte long */ #define ...
printf("mmap_device_io failed for VTM CFG1\n"); exit(-1); } /* Virtual Address for base address of WKUP_VTM0_MMR_VBUSP_CFG2 */ CSL_VTM_TEST_CFG2_BASE = (uintptr_t) mmap_device_memory(0, CSL_WKUP_VTM0_MMR_VBUSP_CFG2_SIZE, ...
connect_funcs.open = io_open; io_funcs.read = io_read; io_funcs.write = io_write; io_funcs.devctl = io_devctl; /*initialize our device description structure */ iofunc_attr_init (&ioattr, S_IFCHR | 0666, NULL, NULL); /*
基于ＱＮＸ６的ＰＣＩ总线设备驱动设计 于爱县，苗克坚 （西北工业大学计算机学院，陕西西安７１００７２）摘要：为了满足在测量与控制尖端工程中的时间响应，更大程度上提高软件系统的实时性。以ＰＣＩ总线接口设备为硬件基础，从ＱＮＸ６实时操作系统资源管理器角度研究了在实时领域里设备驱动设计方法。提出了如何为...
46、d) int val;/ read valueval = *daddr;/ modify value/write value*daddr = val;void init(void)daddr = mmap_device_memory( 0, len,DEVICEADDR); pthread_create( .,func1,.);移植函数库覆盖范围9 taskLibtaskSpawn, tasklnit, taskActivate, exit, taskDelete, taskDeleteForce, taskSuspend, ...
得到权限之后,还必须通过mmap—device—io()进行I/O 地址的映射,只有这样才能获取设备的I/0资源. 在QNX中提供了丰富的PCI操作函数,可以自动的查找 资源,读写PCI配置寄存器., 下面简要分析程序中的关键部分: pci--attach(); 将程序连接到PCIserver上,使得整个程序可以使用 ...
PCI 设备。(接着上面的代码)可以利用mmap():char *mem_base;if(PCI_IS_MEM(address)){ 判断内存基地址int fd;char *page_ptr;fd=shm_open("Physical",O_RDWR,0777);创建一个共享 内存对象if(fd= =-1){perror("Error shm_open:");exit(EXIT_FAILURE);}page_ptr=mmap(0,4096, ...
// modify value // modify value ... ... // write value // write value *daddr = val; *daddr = val; } } void init(void) void init(void) { { ... … daddr = mmap_device_memory( 0, len, ..., DEVICEADDR ); daddr = DEVICEADDR; pthread_create( …, func1, …); taskSpa...