| 标题 | 阅读 | 评论 | 转发 | 发布日期 | |
|---|---|---|---|---|---|
| strace | 570 | 0 | 0 | 2010-07-02 | |
| my socket | 703 | 0 | 0 | 2010-07-02 | |
| errno | 1795 | 0 | 1 | 2010-07-02 | |
| dmesg | 1405 | 0 | 0 | 2010-07-02 | |
| setitimer | 931 | 0 | 1 | 2010-07-02 | |
| WIFEXITED WEXITSTATUS | 2082 | 0 | 0 | 2010-06-30 | |
| sscanf | 1257 | 0 | 0 | 2010-06-30 | |
| sprintf | 1633 | 0 | 0 | 2010-06-30 | |
| pthread_cond_wait | 842 | 0 | 0 | 2010-06-30 | |
| pthread_mutex_lock | 752 | 0 | 0 | 2010-06-30 | |
| pthread_self | 804 | 0 | 0 | 2010-06-29 | |
| linux cmd--nautilus | 1143 | 0 | 0 | 2010-06-29 | |
| vid/pid | 2030 | 0 | 0 | 2010-06-28 | |
| 字符串函数 | 1298 | 0 | 0 | 2010-06-28 | |
| socket | 1373 | 0 | 4 | 2010-06-28 | |
| inet_pton和inet_ntop函数 | 832 | 0 | 1 | 2010-06-28 | |
| fflush | 882 | 0 | 0 | 2010-06-25 | |
| kill | 1210 | 0 | 0 | 2010-06-25 | |
| flock | 1116 | 0 | 0 | 2010-06-25 | |
| 拷贝构造函数与赋值运算符有何不同 | 967 | 0 | 0 | 2010-06-09 |
config20102009-11-19 20:15
外设fpga做的8k的memory，用arm9去读写它，在linux2.6系统下；这样做对吗？
实际地址映射到虚拟内存中，用得到的虚拟地址去读写。
地址总线：a1-a14 数据总线：d0-d15
#define FPGA_BASE_ADDR (0x18000000)//片选为nGCS3
#define BWSCON (0x48000000)
#define BANKCON3 (0x48000010)
#define IP_SIZE (0x1FFF)//13根地址线8K的物理空间
static void *bwscon,*bankcon3,*fpga_base_addr;
bwscon = ioremap_nocache(BWSCON,0x0000004);
bankcon3 = ioremap_nocache(BANKCON3,0x0000004);
fpga_base_addr = ioremap_nocache(FPGA_BASE_ADDR,IP_SIZE);
writel(readl(bwscon)|0xD000,bwscon);
writel(0x7FFC,bankcon3);
for(i=0;i
