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linux移植之DM9000网卡驱动移植

halibote523

专家

2013-03-08 14:58:52 打赏

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Linux内核里面已经支持了dm9000的网卡驱动，所以驱动程序我们不需要写了，只需要添加相应的平台信息。在linux-3.3.5/arch/arm/mach-s3c64xx/mach-my6410.c里面添加都文件#include <linux/dm9000.h>
在linux-3.3.5/arch/arm/mach-s3c64xx/mach-my6410.c里面添加以下平台信息：
#define S3C64XX_PA_DM9000 (0x18000000)

#define S3C64XX_SZ_DM9000 SZ_1M

static struct resource my6410_dm9000_resources[] = {

[0] = {

.start= S3C64XX_PA_DM9000,

.end= S3C64XX_PA_DM9000 + 3,

.flags= IORESOURCE_MEM,

},

[1] = {

.start= S3C64XX_PA_DM9000 + 4,

.end= S3C64XX_PA_DM9000 + S3C64XX_SZ_DM9000 - 1,

.flags= IORESOURCE_MEM,

},

[2] = {

.start= IRQ_EINT(7),

.end= IRQ_EINT(7),

.flags= IORESOURCE_IRQ | IRQF_TRIGGER_HIGH,

},

};

static struct dm9000_plat_data my6410_dm9000_platdata = {

.flags= DM9000_PLATF_16BITONLY,

.dev_addr= { 0x08, 0x90, 0x00, 0xa0, 0x90, 0x90 },

};

static struct platform_device my6410_device_dm9000 = {

.name= "dm9000",

.id= 0,

.num_resources= ARRAY_SIZE(my6410_dm9000_resources),

.resource= my6410_dm9000_resources,

.dev= {

.platform_data = &my6410_dm9000_platdata,

}

};

然后在static struct platform_device *my6410_devices[] __initdata =里面添加

&my6410_device_dm9000,

配置内核，这里网络配置的选项很多，但都要根据实际选对：

出现的问题及解决方案：
1. 编译的时候出现：
  SYSMAP System.map
  
  SYSMAP .tmp_System.map
  
  Inconsistent kallsyms data
  
  This is a bug - please report about it
  
  Try make KALLSYMS_EXTRA_PASS=1 as a workaround
  
  make: *** [vmlinux] 错误 1

这样的错误没有任何提示，经过总结，我发现这样的错误出现的原因就是内核中有些设备没有配置但是在BSP里面却定义了，或者是 BSP里面定义了，但是内核没有配置。

解决方法是把static struct platform_device *my6410_devices[] __initdata里面一些三星的东西去掉，其实如果从一个空模版移植是不会出现这类问题的，这里我还是有些偷懒。修改以后的内容如下：

static struct platform_device *my6410_devices[] __initdata = {

#ifdef CONFIG_SMDK6410_SD_CH0

&s3c_device_hsmmc0,

#endif

&my6410_device_button,

&my6410_device_led,

&my6410_device_dm9000,

#ifdef CONFIG_SMDK6410_SD_CH1

&s3c_device_hsmmc1,

#endif

&s3c_device_i2c0,

//&s3c_device_i2c1,

&s3c_device_fb,

&s3c_device_ohci,

&s3c_device_usb_hsotg,

&samsung_asoc_dma,

//&s3c64xx_device_iisv4,

//&samsung_device_keypad,

#ifdef CONFIG_REGULATOR

//&my6410_b_pwr_5v,

#endif

//&my6410_lcd_powerdev,

//&my6410_smsc911x,

//&s3c_device_adc,

//&s3c_device_cfcon,

&s3c_device_rtc,

&s3c_device_ts,

//&s3c_device_wdt,

};

启动过程中出现这样的问题：

smsc911x: failed to claim resource 0（这个提示原来在这儿我怎么没有发现）

------------[ cut here ]------------

WARNING: at drivers/base/core.c:194 device_release+0x74/0x80()

Device 'platform-lcd.0' does not have a release() function, it is broken and must be fixed.

Modules linked in:

[<c0013e1c>] (unwind_backtrace+0x0/0xf8) from [<c001d968>] (warn_slowpath_common+0x4c/0x64)

[<c001d968>] (warn_slowpath_common+0x4c/0x64) from [<c001da14>] (warn_slowpath_fmt+0x30/0x40)

[<c001da14>] (warn_slowpath_fmt+0x30/0x40) from [<c0175d6c>] (device_release+0x74/0x80)

[<c0175d6c>] (device_release+0x74/0x80) from [<c0126ac0>] (kobject_release+0x44/0x78)

[<c0126ac0>] (kobject_release+0x44/0x78) from [<c0179910>] (platform_add_devices+0x54/0x68)

[<c0179910>] (platform_add_devices+0x54/0x68) from [<c03826c4>] (customize_machine+0x20/0x30)

[<c03826c4>] (customize_machine+0x20/0x30) from [<c00087a8>] (do_one_initcall+0x11c/0x170)

[<c00087a8>] (do_one_initcall+0x11c/0x170) from [<c037f564>] (kernel_init+0x84/0x128)

[<c037f564>] (kernel_init+0x84/0x128) from [<c000f28c>] (kernel_thread_exit+0x0/0x8)

---[ end trace 1b75b31a2719ed1c ]---

------------[ cut here ]------------

WARNING: at drivers/base/core.c:194 device_release+0x74/0x80()

Device 'samsung-keypad' does not have a release() function, it is broken and must be fixed.