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在厂家提供的dm9dev9000c.c上修改,
1、注释掉#ifdef MODULE #endif
2、用模块化函数修饰入口出口函数
3、在dm9000c_init入口函数,增加iobase = (int)ioremap(0x20000000,1024);irq = IRQ_EINT7;
4、一路进入,在dmfe_probe1中注释掉if((db->chip_revision!=0x1A) || ((chip_info&(1<<5))!=0) || ((chip_info&(1<<2))!=1)) return -ENODEV;
5、dmfe_open中if (request_irq(dev->irq,&dmfe_interrupt,0,dev->name,dev))修改为if (request_irq(dev->irq,&dmfe_interrupt,IRQF_TRIGGER_RISING,dev->name,dev))
6、在出口函数dm9000c_exit中增加iounmap((void *)iobase);
7、增加头文件#include <asm/irq.h>
 #include <asm/delay.h>
 #include <asm/io.h>
 #include <asm/arch-s3c2410/regs-mem.h>
编译通过。
8、在dm9000c_init入口函数里添加时序:volatile unsigned long bwscon;
     volatile unsigned long bankcon4;
     unsigned long val;
     bwscon   = ioremap(0x48000000,4);
     bankcon4 = ioremap(0x48000014,4);
     val = *bwscon;
     val &= ~(0xf<<16);
     val |= (1<<16);
     *bwscon = val;
     *bankcon4 = (1<<6);
     iounmap(bwscon);
     iounmap(bankcon4);
编译通过。
9、测试驱动:在内核/drivers/net中替换.c文档,修改makefile,编译新的uImage。烧写后,启动
 # ifconfig
 eth0      Link encap:Ethernet  HWaddr 00:60:6E:33:44:55
           inet addr:192.168.42.222  Bcast:192.168.42.255  Mask:255.255.255.0
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:317012 errors:0 dropped:0 overruns:0 frame:0
           TX packets:1239 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:32863664 (31.3 MiB)  TX bytes:191590 (187.0 KiB)
           Interrupt:51 Base address:0xa000
lo        Link encap:Local Loopback
           inet addr:127.0.0.1  Mask:255.0.0.0
           UP LOOPBACK RUNNING  MTU:16436  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
 # ping 192.168.42.144
 PING 192.168.42.144 (192.168.42.144): 56 data bytes
 64 bytes from 192.168.42.144: seq=0 ttl=64 time=0.865 ms
 64 bytes from 192.168.42.144: seq=1 ttl=64 time=1.077 ms
 64 bytes from 192.168.42.144: seq=2 ttl=64 time=1.047 ms
--- 192.168.42.144 ping statistics ---
 3 packets transmitted, 3 packets received, 0% packet loss
 round-trip min/avg/max = 0.865/0.996/1.077 ms
  
