📄 cs8900a.c
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/****************************************************************************/
/* */
/* FILENAME VERSION */
/* */
/* CS8900A.C 2001年6月30日 0.91 */
/* */
/* DESCRIPTION */
/* */
/* 该文件包括所有与CS8900A网络芯片的接口程序，处理初始化、传输数据和 */
/* 错误处理。 */
/* */
/* DATA STRUCTURES */
/* */
/* Check in file 'CS8900A.h' */
/* */
/* FUNCTIONS */
/* */
/* CS8900A_Init */
/* CS8900A_Get_Address */
/* CS8900A_Set_Address */
/* CS8900A_Open */
/* CS8900A_Recv_Packet */
/* CS8900A_Xmit_Packet */
/* CS8900A_Transmit */
/* CS8900A_LISR */
/* CS8900A_Recv_HISR */
/* CS8900A_Chip_Write */
/* CS8900A_Chip_Read */
/* CS8900A_Reset */
/* CS8900A_Delay */
/* */
/****************************************************************************/
#include "nucleus.h"
#include "externs.h"
//#include "net/inc/protocol.h"
#include "net/inc/tcp_errs.h"
#include "target.h"
#include "driver.h"
#include "xdrvdev.h"
//#include "2410slib.h"
//#if SNMP_INCLUDED
#if INCLUDE_SNMP // == NU_TRUE)
#include "snmp.h"
#endif
//#include "data.h"
#include "CS8900A.h"
#include "net.h"
#include "mem_defs.h"
/* Receive and Transmit HISR Control Blocks. */
NU_HISR CS8900A_Ether_inter_Control;
NU_HISR CS8900A_inter_Trans;
NU_HISR CS8900A_inter_BufferE;
#define ioread16(addr) (*((volatile unsigned short *)addr))
#define MAX_CS8900A_DEVICES 5
DV_DEVICE_ENTRY *CS8900A_RBuffer[MAX_CS8900A_DEVICES];
DV_DEVICE_ENTRY *CS8900A_THOSTBuffer[MAX_CS8900A_DEVICES];
int CS8900A_Read;
int CS8900A_Write;
int Host_Data_Read;
int Host_Data_Write;
int *INT_cont = 0;
void *pXDATA,*pHISR_IRQ,*pHISR_Tx,*pHISR_IBuff;
unsigned short CS8900AReadPacketPage( unsigned short Offset );
void CS8900AWritePacketPage( unsigned short Offset, unsigned short Value );
unsigned short CS8900ARequestTransmit(unsigned short Length);
void *normalize_ptr(void *ptr);
/****************************************************************************/
/* FUNCTION */
/* */
/* CS8900A_Init */
/* */
/* DESCRIPTION */
/* */
/* 初始化设备结构并调用设备打开程序。 */
/* */
/* CALLED BY */
/* */
/* DEV_Init_Devices */
/* */
/* CALLS */
/* */
/* The device open function */
/* */
/* INPUTS */
/* */
/* DV_DEVICE_ENTRY *: Pointer to the device */
/* */
/* OUTPUTS */
/* */
/* NU_SUCCESS or a negative value on failure. */
/* */
/* HISTORY */
/* */
/* NAME DATE REMARKS */
/****************************************************************************/
STATUS CS8900A_Init(DV_DEVICE_ENTRY *device)
{
void *pointer;
/* Initialize the various function pointers. */
device->dev_open = CS8900A_Open;
device->dev_start = CS8900A_Xmit_Packet;
device->dev_output = NET_Ether_Send;
device->dev_input = NET_Ether_Input;
device->dev_ioctl = CS8900A_Ioctl;
device->dev_type = DVT_ETHER;
device->dev_addrlen = 6;
device->dev_hdrlen = 14; /* Size of an ethernet header. */
device->dev_mtu = 1500; /* MTU excludes the size of the MAC
layer header. */
/* The CS8900A is a simplex controller. Broadcasts are allowed. */
device->dev_flags |= (DV_BROADCAST | DV_SIMPLEX | DV_MULTICAST);
/* Allocate the memory required for the CS8900A data. */
if ( NU_Allocate_Memory ( &System_Memory, &pointer, sizeof(CS8900A_XDATA),
NU_NO_SUSPEND ) != NU_SUCCESS)
{
NU_Tcp_Log_Error (TCP_SESS_MEM, TCP_FATAL, __FILE__, __LINE__);
return (-1);
}
/* Clear the data. */
UTL_Zero (pointer, sizeof(CS8900A_XDATA));
/* The device structure includes 4 fields that are unused. Two are reserved
for system use, and two are for reserved for users. We are going to use
one of the fields reserved for users to store a pointer to the data for
this CS8900A device. */
device->user_defined_1 = (uint32)pointer;
Xos_Lisr_Driver[XDRV_NET_RVECTOR] = (XHANDLE *)device;
/* Initialize the device. */
return ( (*(device->dev_open)) (device->dev_mac_addr, device) );
} /* CS8900A_Init */
STATUS CS8900A_Close(NU_DEVICE *device)
{
STATUS status;
//将EINT9脚设置为输入
rGPGCON &= 0XFFFFFFF3;
//子中断屏蔽寄存器将EINT9屏蔽
rEINTMASK |= 0X200;
//中断屏蔽寄存器中将EINT8~23屏蔽
rINTMSK |= BIT_EINT8_23;
if((status = NU_Deallocate_Memory(pXDATA)) != NU_SUCCESS)
{
return status;
}
if((status = NU_Deallocate_Memory(pHISR_IRQ)) != NU_SUCCESS)
{
return status;
}
if((status = NU_Deallocate_Memory(pHISR_Tx)) != NU_SUCCESS)
{
return status;
}
if((status = NU_Deallocate_Memory(pHISR_IBuff)) != NU_SUCCESS)
{
return status;
}
return NU_SUCCESS;
}
/****************************************************************************/
/* FUNCTION */
/* */
/* CS8900A_Get_Address */
/* */
/* DESCRIPTION */
/* */
/* 该函数从芯片内部寄存器读取芯片的物理地址。 */
/* */
/* CALLED BY */
/* */
/* */
/* */
/* CALLS */
/* */
/* */
/* */
/* INPUTS */
/* */
/* */
/* */
/* OUTPUTS */
/* */
/* */
/* */
/****************************************************************************/
STATUS CS8900A_Get_Address (uint8 *ether_addr)
{
/* cs8900a IA :{0x08, 0x00, 0x20, 0x74, 0x80, 0xa7} */
/*从芯片内部寄存器读取物理地址，或用户自己设置物理地址，并写入参数
ether_addr中。 */
ether_addr[0]=0x00;//0xa7;
ether_addr[1]=0x00;//0x80;
ether_addr[2]=0x74;
ether_addr[3]=0x20;
ether_addr[4]=0x00;
ether_addr[5]=0x08;
return NU_SUCCESS;
} /* end CS8900A_Get_Address */
/****************************************************************************/
/* FUNCTION */
/* */
/* CS8900A_Set_Address */
/* */
/* DESCRIPTION */
/* */
/* 将芯片的物理地址写入芯片的物理地址寄存器中。 */
/* */
/* CALLED BY */
/* */
/* CS8900A_Open */
/* */
/* CALLS */
/* */
/* */
/* INPUTS */
/* */
/* */
/* OUTPUTS */
/* */
/* */
/* HISTORY */
/* */
/* NAME DATE REMARKS */
/****************************************************************************/
void CS8900A_Set_Address (uint8 *ether_addr, DV_DEVICE_ENTRY *device)
{
union
{
unsigned short word;
unsigned char byte[2];
} Value;
/*将物理地址写入芯片寄存器*/
/* Put hardware address into the Individual Address register */
Value.byte[0]=ether_addr[0];
Value.byte[1]=ether_addr[1];
CS8900AWritePacketPage( PKTPG_IND_ADDR, Value.word);
Value.byte[0]=ether_addr[2];
Value.byte[1]=ether_addr[3];
CS8900AWritePacketPage( PKTPG_IND_ADDR+2, Value.word);
Value.byte[0]=ether_addr[4];
Value.byte[1]=ether_addr[5];
CS8900AWritePacketPage( PKTPG_IND_ADDR+4, Value.word);
/* Initialize the Physical address in the MIB. */
SNMP_ifPhysAddress(device->dev_unit + 1, ether_addr);
} /* end CS8900A_Set_Address */
/****************************************************************************/
/* FUNCTION */
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