dm9000.c

uClinux下

/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                     graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:           dm9000.c
** Last modified Date:  2005-05-12
** Last Version:        1.0
** Descriptions:        This is a Kernel module for uClinux 2.4.x .
**                      This module let uClinux 2.4.x can use rtl8019. 
**------------------------------------------------------------------------------------------------------
** Created by:          Chenmingji
** Created date:        2005-05-12
** Version:             1.0
** Descriptions:        The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Descriptions:
**

********************************************************************************************************/

#define IN_DM9000
#include "config.h"
#include "dm9000.h"
#include "externflashdev.h"

/********************************************************************************************************
              function announce
********************************************************************************************************/
#define DM9KS_ID			0x90000A46
#define DM9010_ID			0x90100A46

#define DM9KS_VID_L			0x28
#define DM9KS_VID_H			0x29
#define DM9KS_PID_L			0x2A
#define DM9KS_PID_H			0x2B

static int net_init(struct net_device *dev);
static int net_open(struct net_device *dev);
static int net_release(struct net_device *dev); 
static int net_config(struct net_device *dev, struct ifmap *map);
static int net_tx(struct sk_buff *skb, struct net_device *dev);
static int net_irq_handle(int irq, void *dev_id, struct pt_regs *regs);
static int net_set_mac_address(struct net_device *dev, void *addr);
static int net_set_mac();
int  net_init_module(void);
void net_cleanup(void);
int initflag = 0;
static void net_tasklet(unsigned long);

/********************************************************************************************************
              define announce
********************************************************************************************************/
static struct net_device *DM9000Dev;

module_init(net_init_module);
module_exit(net_cleanup);
DECLARE_TASKLET(ZLG_net_tasklet, net_tasklet, (unsigned long)(&DM9000Dev));

MODULE_LICENSE("Proprietary");
MODULE_DESCRIPTION("Guangzou ZLG-MCU Development Co.,LTD.\ngraduate school\nhttp://www.zlgmcu.com");
MODULE_SUPPORTED_DEVICE("uClinux2.4.x LPC2200 DM9000");
MODULE_AUTHOR("chenmingji");

/*********************************************************************************************************
**                  "全局和静态变量在这里定义"         
**        global variables and static variables define here
********************************************************************************************************/
static unsigned int usage;
static u32 PinSel0Save;
static board_info_t NetDriverInfo[1];

/********************************************************************************************************/

static struct net_device net_net =
{
    name:           "eth0",
    init:           net_init,
    base_addr:      IOaddress0,
    irq:            NET_IRQ,
    watchdog_timeo: NET_TIMEOUT,
};

#include "externflashdev.c"
/*********************************************************************************************************
** Function name:           ior
**
** Descriptions:            read a reg form dm9000 
**
** input parameters:        board_info_t *db    ;dm9000 status struct
**                          reg                 ;reg address of dm9000
** Returned value:          uint8               ;reg value 
**         
** Used global variables:   None
** Calling modules:         None
**
** Created by:              Yehaoben
** Created Date:            2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
static uint8 ior(board_info_t *db, uint8 reg)
{   
    unsigned int i;
    unsigned int rt;

    outb(reg, db->ioaddr);
    for (i = 0; i < BUS_DELAY; i++)
    {
    }

    rt = inb(db->io_data);
    for (i = 0; i < BUS_DELAY; i++)
    {
    }
    
    return rt;
}

/*********************************************************************************************************
** Function name:           iow
**
** Descriptions:            write a value to a dm9000 reg  
**
** input parameters:        board_info_t *db    ;dm9000 status struct
**                          reg                 ;reg address of dm9000
**                          value               ;reg value 
** Returned value:          None 
**         
** Used global variables:   None
** Calling modules:         None
**
** Created by:              Yehaoben
** Created Date:            2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        static void iow(board_info_t *db, uint8 reg, uint8 value)
{
    unsigned int i;
    
    outb(reg, db->ioaddr);
    for(i = 0; i<BUS_DELAY; i++)
    {
    }
    
    outb(value, db->io_data);
    for(i = 0; i<BUS_DELAY; i++)
    {
    }
}

/*********************************************************************************************************
** Function name:           phy_write
**
** Descriptions:            write a value to PHY device reg   
**
** input parameters:        board_info_t *db    ;dm9000 status struct
**                          reg                 ;reg address of PHY device
**                          value               ;reg value  
** Returned value:          None 
**         
** Used global variables:   None
** Calling modules:         None
**
** Created by:              Yehaoben
** Created Date:            2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        static void phy_write(board_info_t *db, uint8 reg, uint16 value)
{
    /* Fill the phyxcer register into REG_0C */
    iow(db, 0xc, DM9000_PHY | reg);

    /* Fill the written data into REG_0D & REG_0E */
    iow(db, 0xd, (value & 0xff));
    iow(db, 0xe, ( (value >> 8) & 0xff));

    iow(db, 0xb, 0xa);      /* Issue phyxcer write command */
    udelay(500);            /* Wait write complete */
    iow(db, 0xb, 0x0);      /* Clear phyxcer write command */
}

/*********************************************************************************************************
** Function name:           set_PHY_mode
**
** Descriptions:            set the PHY device working   
**
** input parameters:        board_info_t *db    ;dm9000 status struct
**                            
** Returned value:          None 
**         
** Used global variables:   None
** Calling modules:         None
**
** Created by:              Yehaoben
** Created Date:            2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        static void set_PHY_mode(board_info_t *db)
{
    unsigned int phy_reg4 = 0x01e1, phy_reg0=0x1000;

    iow(db,0x1f,0x01); /* must powerdown phy first */

    if ( !(db->op_mode & DM9000_AUTO))
    {
        switch(db->op_mode)
        {
            case DM9000_10MHD:
                phy_reg4 = 0x21; /* 10M HALF DUPLEX*/
                phy_reg0 = 0x0000; 
                break;
            case DM9000_10MFD:
                phy_reg4 = 0x41; /* 10M FULL DUPLEX*/
                phy_reg0 = 0x1100; 
                break;
            case DM9000_100MHD:
                phy_reg4 = 0x81; /* 100M HALF DUPLEX*/
                phy_reg0 = 0x2000; 
                break;
            case DM9000_100MFD:
                phy_reg4 = 0x101;/* 100M HALF DUPLEX */ 
                phy_reg0 =0x3100; 
                break;
            default:
                break;
        }
    }
    phy_write(db, 4, phy_reg4); /* Set PHY media mode */
    phy_write(db, 0, phy_reg0); /*  Tmp */

    iow(db, 0x1e, 0x01);            /* Let GPIO0 output */
    iow(db, 0x1f, 0x00);            /* Enable PHY */
}
/*********************************************************************************************************
** Function name: device_init
** Descriptions:  device init
** Input: dev:    information of device
**        
** Output: 0:     OK
**         other: errno
** Created by:    Chenmingji
** Created Date:  2005-05-12
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        static int device_init(struct net_device *dev)
{
    unsigned long flag;
    uint8   i;
    uint32 ulData;
    board_info_t *db = dev->priv;

    local_irq_save(flag);
    /* 硬件复位复位 */
    
    //Hardware_Initial0();
   //PINSEL0 |= 0x0000c000;
    
    //IO0DIR = IO0DIR | 0x00000040;
    IO0DIR |= 0x40;
    
    db->ioaddr = IOaddress0;
    db->io_data = IOaddress0 + 0x00400000;
    /* RESET device */
    /*Hardware Reset*/
   
    
    
    IO0SET |= 0x00000040;/*Hardware_Reset_Set0();*/
    udelay(500);
   
    IO0CLR |= 0x00000040;/*Hardware_Reset_Clr0();*/
    udelay(500);
   
    IO0SET |= 0x00000040;/*Hardware_Reset_Set0();*/
    udelay(500);    
    
    /*software reset*/
    
    iow(db, 0, 1);         
    udelay(500);              /* delay 100us */
    
    /* I/O mode */
    db->io_mode = ior(db, 0xfe) >> 6; /* ISR bit7:6 keeps I/O mode *///read the io mode (8/16/32bits)

    /* NIC Type: FASTETHER, HOMERUN, LONGRUN */
    db->nic_type = FASTETHER_NIC; //identify_nic(db);   //just check for dm9801 or dm9802

    /* GPIO0 on pre-activate PHY */