移植CS8900A网卡驱动到GEC2440开发板

(2010-04-20 15:15:21) 转载 标签：

arm嵌入式linux

s3c2440

cs8900a

10m网卡驱动

网卡驱动移植

it

分类： 嵌入式Linux（ARM） 步骤： 设置好交叉编译工具链，Linux内核是前面移植的 2.6.32.8版本，在原来移植修改后的基础上进入下面操作。 (开发板上的10M网卡是CS8900A-CQ3Z)，该内核版本的cs89x0.c和cs89x0.h文件只需修改小部分就可用。 根据原理图可知网卡的地址和中断号是分别是:0x19000000、EINT9/GPG1。 1、修改driver/net/cs89x0.c文件 1）、修改ioaddr和irq，接CS3，addr24选择io或memory方式，irq是EINT9/GPG1，写网卡MAC地址 在#include "cs89x0.h"后添加如下内容： #include "../../arch/arm/mach-s3c2410/include/mach/map.h" #include "../../arch/arm/mach-s3c2410/include/mach/regs-mem.h" #include "../../arch/arm/mach-s3c2410/include/mach/regs-gpio.h" #include "../../arch/arm/mach-s3c2410/include/mach/regs-irq.h" 在 #else static unsigned int netcard_portlist[] __used __initdata =    { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0}; static unsigned int cs8900_irq_map[] = {10,11,12,5}; #endif 前添加如下代码： #elif defined(CONFIG_ARCH_S3C2410) static unsigned int netcard_portlist[] __used __initdata = { S3C24XX_VA_CS8900_CS3 + 0x300, 0}; static unsigned int cs8900_irq_map[] = {IRQ_EINT9,0,0,0}; 2）、添加2440硬件初始化函数 在上面的后面添加如下函数内容： static void cs89x0_hw_setup(struct net_device *dev) { unsigned int regval = 0;  //CS3, 16 bit bus width __raw_writel(0x2211d110,S3C2410_BWSCON); __raw_writel(0x1f7c,S3C2410_BANKCON3);   //EINT[9] regval = __raw_readl(S3C2410_GPGCON); regval &= ~(3<<2); regval |= 2 <<2; __raw_writel(regval, S3C2410_GPGCON);   //irq mode regval = __raw_readl(S3C2410_EXTINT1); regval &= ~(7<<4); regval |= 4 <<4; __raw_writel(regval, S3C2410_EXTINT1);   //irq MASK regval = __raw_readl(S3C2410_EINTMASK); regval &= ~(1<<9); __raw_writel(regval, S3C2410_EINTMASK);   //mac addr dev->dev_addr[0] = 0x00; dev->dev_addr[1] = 0x00; dev->dev_addr[2] = 0xc0; dev->dev_addr[3] = 0xff; dev->dev_addr[4] = 0xee; dev->dev_addr[5] = 0x08;   printk("[cs89x0_probe] S3C2410_BWSCON = %x ", __raw_readl(S3C2410_BWSCON)); printk("[cs89x0_probe] S3C2410_BANKCON3 = %x ", __raw_readl(S3C2410_BANKCON3)); printk("[cs89x0_probe] S3C2410_GPGCON = %x ", __raw_readl(S3C2410_GPGCON)); printk("[cs89x0_probe] S3C2410_EXTINT1 = %x ", __raw_readl(S3C2410_EXTINT1)); printk("[cs89x0_probe] S3C2410_EINTMASK = %x ", __raw_readl(S3C2410_EINTMASK)); printk("[cs89x0_probe] MAC ADDR: %x-%x-%x-%x-%x-%x ", dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);   } 3）、在cs89x0_probe函数里调用cs89x0_hw_setup函数 在文件中如下代码 if (net_debug)  printk("cs89x0:cs89x0_probe(0x%x) ", io); 前添加如下代码： cs89x0_hw_setup(dev); 4）、修改readword，writeword函数，portno不需要左移 (下面不用改，因为执行else分支里面的就是下面内容) static u16 readword(unsigned long base_addr, int portno) { return __raw_readw(base_addr+portno); }  static void writeword(unsigned long base_addr, int portno,u16 value) { __raw_writew(value,base_addr+portno); }  5）、设置网口RJ45，省去boot启动时带参数 lp->force = g_cs89x0_media__force; 改成 lp->force=FORCE_RJ45;  6）、注释掉irq_map的安全检查 #if 0 if (((1 <<>irq) & lp->irq_map) == 0) { printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x ", dev->name, dev->irq, lp->irq_map); ret = -EAGAIN; goto bad_out; } #endif 2、2440初始化时增加分配cs8900的io port，修改arch/arm/mach-s3c2440/mach-smdk2440.c文件： static struct map_desc smdk2440_iodesc[] __initdata = {   { .virtual = (u32)S3C24XX_VA_ISA_WORD, .pfn = __phys_to_pfn(S3C2410_CS2), .length = 0x10000, .type = MT_DEVICE, }, { .virtual = (u32)S3C24XX_VA_ISA_WORD + 0x10000, .pfn = __phys_to_pfn(S3C2410_CS2 + (1<<24)), .length = SZ_4M, .type = MT_DEVICE, }, { .virtual = (u32)S3C24XX_VA_ISA_BYTE, .pfn = __phys_to_pfn(S3C2410_CS2), .length = 0x10000, .type = MT_DEVICE, }, { .virtual = (u32)S3C24XX_VA_ISA_BYTE + 0x10000, .pfn = __phys_to_pfn(S3C2410_CS2 + (1<<24)), .length = SZ_4M, .type = MT_DEVICE, }, { .virtual = (u32)S3C24XX_VA_CS8900_CS3, .pfn = __phys_to_pfn(S3C2410_CS3 + (1<<24)), .length = SZ_1M, .type = MT_DEVICE, } }; 3、在arch/arm/mach-s3c2410/include/mach/map.h增加宏定义,跟别的不冲突就行了 #define S3C24XX_VA_CS8900_CS3 S3C2410_ADDR(0x04000000) 4、修改driver/net/Kconfig文件：      config CS89x0         tristate "CS89x0 support"         depends on NET_ETHERNET && (ISA || EISA || MACH_IXDP2351                 || ARCH_IXDP2X01 || ARCH_PNX010X || MACH_MX31ADS) || ARCH_S3C2410 5、重新配置内核     make menuconfig     配置如下项：     Device Drivers --->       Network device support --->         Ethernet (10 or 100 Mbit) --->           <*> CS89x0 support Device Drivers --->       Generic Driver Options --->          [*] Create a kernel maintained /dev tmpfs (EXPERIMENTAL)          [*]    Automount devtmpfs at /dev    make zImage    重新生成zImage镜像文件，再烧写到Nand Flash中。 运行时提示下面内容： [cs89x0_probe] S3C2410_BWSCON = 2211d110 [cs89x0_probe] S3C2410_BANKCON3 = 1f7c [cs89x0_probe] S3C2410_GPGCON = ff95ffba [cs89x0_probe] S3C2410_EXTINT1 = 40 [cs89x0_probe] S3C2410_EINTMASK = fffdf0 [cs89x0_probe] MAC ADDR: 0-0-c0-ff-ee-8 cs89x0:cs89x0_probe(0x0) cs89x0.c: v2.4.3-pre1 Russell Nelson , Andrew Morton eth0: cs8900 rev K found at 0xf8000300 cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line cs89x0 media RJ-45, IRQ 53, programmed I/O, MAC 00:00:c0:ff:ee:08 cs89x0_probe1() successful [cs89x0_probe] S3C2410_BWSCON = 2211d110 [cs89x0_probe] S3C2410_BANKCON3 = 1f7c [cs89x0_probe] S3C2410_GPGCON = ff95ffba [cs89x0_probe] S3C2410_EXTINT1 = 40 [cs89x0_probe] S3C2410_EINTMASK = fffdf0 [cs89x0_probe] MAC ADDR: 0-0-c0-ff-ee-8 cs89x0:cs89x0_probe(0x0) cs89x0: request_region(0xf8000300, 0x10) failed cs89x0: no cs8900 or cs8920 detected.  Be sure to disable PnP with SETUP 运行时有上面的提示，并且找不到/dev/eth0设备，但可以查看到/proc/net/dev/目录下多了eth0一项，可以通过ifconfig设置，并且可以ping通上位机。如下截图： 主机去Ping也可以通，证明驱动没问题，如下截图：   参考网址：http://blog.ednchina.com/nino61/240010/message.aspx http://www.ourcn.cn/Linuxzhuanti/guanliyingyong/2009-11-20/8754.html        http://zhubangbing.blog.163.com/blog/static/52609270200811224645613/ http://blog.chinaunix.net/u3/93882/showart_1869908.html http://blog.csdn.net/fei1700/archive/2008/11/28/3395619.aspx