📄 s3c44b0_uart.h
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/*======================================================
* File Name: s3c44b0_uart.h
*
* Author:gong
*
* Email:gongyanlei@msn.com
*
* QQ & MSN:6213599, gongyanlei@msn.com
* Modification History: 2008-05 gong, created.
*
* Debug History: 2008-05
*
======================================================*/
#ifndef _S3C44B0_UART_H_
#define _S3C44B0_UART_H_
/*===================================================*/
/* gereneral */
/*===================================================*/
/*=================device number=========================*/
#define S3C44B0_UART_NAME "s3c44b0_uart" /*device name of s3c44b0_uart*/
#define S3C44B0_UART_MAJOR 125 /*the major device number of s3c44b0_uart*/
/* =================for LoopQueue=========================*/
#define MAX_ITEM_NUM 20 /*number of items in LoopQueue*/
#define MAX_MSG_LEN 100 /*byte number of each item in LoopQueue*/
/*=================buad rate related=======================*/
#define XTALL 12288000 /*Hz*/
#define DESIRED_BAUD_RATE 9600 //768000 /*bps*/
/*===================================================*/
/* S3C44B0_UART */
/*===================================================*/
/*================s3c44b0_uart Registers========================*/
#define S3C44B0_UART_BASE_ADDR 0x06000000 /*nGCS3 of ARM*/
#define S3C44B0_UART_FIFO *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x00)
#define S3C44B0_UART_IER *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x01)
#define S3C44B0_UART_IIR *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x02)
#define S3C44B0_UART_FCR *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x02)
#define S3C44B0_UART_LCR *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x03)
#define S3C44B0_UART_MCR *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x04)
#define S3C44B0_UART_LSR *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x05)
#define S3C44B0_UART_MSR *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x06)
#define S3C44B0_UART_SR *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x07)
#define S3C44B0_UART_DLSB *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x00)
#define S3C44B0_UART_DMSB *(volatile unsigned char *)(S3C44B0_UART_BASE_ADDR+0x01)
/*================FIFO control register======================*/
#define FCR_FIFO_ENALBE 0x01
#define FCR_CLR_RX_FIFO 0x02
#define FCR_CLR_TX_FIFO 0x03
#define FCR_64_BYTE_MODE 0x20
#define FCR_1_TRIGGER_LEVEL_16 0x00
#define FCR_4_TRIGGER_LEVEL_16 0x40
#define FCR_8_TRIGGER_LEVEL_16 0x80
#define FCR_14_TRIGGER_LEVEL_16 0xC0
#define FCR_1_TRIGGER_LEVEL_64 0x00
#define FCR_16_TRIGGER_LEVEL_64 0x40
#define FCR_32_TRIGGER_LEVEL_64 0x80
#define FCR_56_TRIGGER_LEVEL_64 0xC0
/*================interrupt enalbe register===================*/
#define IER_EN_RDA_INT 0x01
#define IER_EN_THRE_INT 0x02
#define IER_EN_RLS_INT 0x04
#define IER_EN_MS_INT 0x08
#define IER_EN_SLEEP_MODE 0x10
#define IER_EN_LPWR_MODE 0x20
#define IER_DISEN_ALL 0x00
/*================interrupt identify register==================*/
#define IIR_RLS_INT 0x06 /*receiver line status*/
#define IIR_RDA_INT 0x04 /*receiver data available*/
#define IIR_CTOI_INT 0x0C /*char time out indicater*/
#define IIR_THRE_INT 0x02 /*transmitter holding register empty*/
#define IIR_MS_INT 0x00 /*modem status*/
/*==================line control register===================*/
#define LCR_5_CHR_BIT 0x00
#define LCR_6_CHR_BIT 0x01
#define LCR_7_CHR_BIT 0x02
#define LCR_8_CHR_BIT 0x03
#define LCR_1_STOP_BIT 0x00
#define LCR_2_STOP_BIT 0x04
#define LCR_EN_PARITY 0x08
#define LCR_EN_EVEN_PARITY 0x10
#define LCR_EN_STICK_PARITY 0x20
#define LCR_EN_BREAK_CONTRL 0x40
#define LCR_DLAB 0x80
/*==================line status register===================*/
#define LSR_DATA_READY 0x01 /*the data ready (DR) indicator for the receiver.*/
#define LSR_OVER_RUN_ERROR 0x02 /*the overrun error (OE) indicator.*/
#define LSR_PARITY_ERROR 0x04 /*the parity error (PE) indicator.*/
#define LSR_FRAME_ERROR 0x08 /*the framing error (FE) indicator.*/
#define LSR_BREAK_INT 0x10 /*the break interrupt (BI) indicator.*/
#define LSR_THRE 0x20 /*the transmitter holding register empty indicator.*/
#define LSR_TEMT 0x40 /*the transmitter empty (TEMT) indicator.*/
#define LSR_FIFO_ERR 0x80 /*In the FIFO mode, LSR7 isset when there is at least */
/*one parity, framing, or break error in the FIFO.*/
/*=================modem control register================*/
#define MCR_DTR_OUT 0x01
#define MCR_RTS_OUT 0x02
#define MCR_OUT1 0x04
#define MCR_OUT2 0x08
#define MCR_LOOP_BACK 0x10
#define MCR_EN_AUTO_FLOW 0x22
#define MCR_EN_AUTO_CTS 0x20
#define MCR_EN_AUTO_RTS 0x00
/*===================================================*/
/* protocol bewteen host and arm */
/*===================================================*/
/*=================TrCode======================*/
#define TC_RESPONSE 0x10 /*response*/
#define TC_CMD_REQUEST 0x00 /*command request*/
#define TC_CMD_REPORT 0x02 /*command report*/
#define TC_STS_REPORT 0x03 /*status report*/
#define RESPONSE_LEN 4 /*the length of struct--response*/
/*==============operation code====================*/
#define OP_CODE_INITIALIZE 0x00
#define OP_CODE_RESET 0x01
#define OP_CODE_STATUS_REQUEST 0x02
#define OP_CODE_START_JOB 0x10
#define OP_CODE_END_JOB 0x11
#define OP_CODE_START_PAGE 0x12
#define OP_CODE_END_PAGE 0x13
#define OP_CODE_ABORT_JOB 0x14
/*==========error code in the struct of response ==========*/
#define ERR_CODE_NO 0x00 /*NO error(ACK)*/
#define ERR_CODE_OVERRUN 0x01 /*Overrun Error (NACK)*/
#define ERR_CODE_PARITY 0x02 /*Parity Error (NACK)*/
#define ERR_CODE_FRAME 0x03 /*Framing Error (NACK)*/
#define ERR_CODE_CHR_TIMEOUT 0x04 /*Character Timeout Error (NACK)*/
#define ERR_CODE_CHKSUM 0x05 /*CheckSum Error (NACK)*/
#define ERR_CODE_SN 0x06 /*Sequence Number Error (NACK)*/
/*=================report code===================*/
#define REPORT_CODE_COMPLETE 0x00
#define REPORT_CODE_CMD_REJECTED 0x01
#define REPORT_CODE_UNDEF_CMD 0x02
#define REPORT_CODE_PARA_ERR 0x03
#define REPORT_CODE_CMD_TIMEOUT 0x04
#define REPORT_CODE_HADRDWARE_ERR 0x05
#define REPORT_CODE_MEM_NOT_ENOUGH 0x06
/*=================header forma==================t*/
#define HEADER_FORMAT_JOB_HEADER 0x00
#define HEADER_FORMAT_JOB_FOOTER 0x01
#define HEADER_FORMAT_PAGE_HEADER 0x02
#define HEADER_FORMAT_PAGE_FOOTER 0x03
/*==================jet freq=====================*/
#define JET_FREQ_5K 0x00
#define JET_FREQ_10K 0x01
#define JET_FREQ_15K 0x02
#define JET_FREQ_20K 0x03
/*==================job type=====================*/
#define JOB_TYPE_NORMAL 0x00
#define JOB_TYPE_MAINTENANCE 0x01
/*=================gradation=====================*/
#define GRADATION_1B 0x01
#define GRADATION_2B 0x02
#define GRADATION_4B 0x04
#define GRADATION_8B 0x08
/*=================resolution=====================*/
#define RESOLUTION_H_300 0x00
#define RESOLUTION_H_360 0x01
#define RESOLUTION_H_480 0x02
#define RESOLUTION_H_600 0x03
#define RESOLUTION_H_720 0x04
#define RESOLUTION_H_1200 0x05
#define RESOLUTION_H_1440 0x06
#define RESOLUTION_H_2400 0x07
#define RESOLUTION_L_300 0x00
#define RESOLUTION_L_360 0x10
#define RESOLUTION_L_480 0x20
#define RESOLUTION_L_600 0x30
#define RESOLUTION_L_720 0x40
#define RESOLUTION_L_1200 0x50
#define RESOLUTION_L_1440 0x60
#define RESOLUTION_L_2400 0x70
/*===============image setting=====================*/
#define COLOR_MODE_K 0x01
#define COLOR_MODE_C 0x02
#define COLOR_MODE_M 0x04
#define COLOR_MODE_Y 0x08
#define DUPLEX_MODE_SIMPLE x00
#define DUPLEX_MODE_DUPLEX x10
/*=================color========================*/
#define COLOR_K 0x01
#define COLOR_C 0x02
#define COLOR_M 0x04
#define COLOR_Y 0x08
/*===============basic status=====================*/
#define BASIC_STATUS_ERR 0x01
#define BASIC_STATUS_WAIT 0x02
#define BASIC_STATUS_OPERATOR_CALL 0x04
#define BASIC_STATUS_MAINTENANCE 0x08
#define BASIC_STATUS_PRINTER_BUSY 0x10
#define BASIC_STATUS_JET_FREQ 0x20
/*============operator call status====================*/
#define OPERATOR_CALL_NO_PAPER 0x01
#define OPERATOR_CALL_PAPER_JAM 0x02
#define OPERATOR_CALL_C_INK_EMPTY 0x04
#define OPERATOR_CALL_M_INK_EMPTY 0x08
#define OPERATOR_CALL_Y_INK_EMPTY 0x10
#define OPERATOR_CALL_K_INK_EMPTY 0x20
/*==============wait status=======================*/
#define WAIT_STATUS_SLEEPING 0x01
#define WAIT_STATUS_WARMING 0x02
#define WAIT_STATUS_MEM_NOT_ENOUGH 0x04
/*==for the number of array--response, used in interrupt handler===*/
#define RSP_CHK_SUM 0 /*check sum*/
#define RSP_TR_CODE 1 /*Trcode*/
#define RSP_SN 2 /*Sequence Number*/
#define RSP_ERR_CODE 3 /*error code*/
/*===================================================*/
/* typedefs */
/*===================================================*/
typedef struct loop_queue
{
unsigned char data[MAX_ITEM_NUM][MAX_MSG_LEN]; /*the data queue*/
unsigned char front; /*the position of first added item, which can */
/*be used to read next item*/
unsigned char rear; /*the position of newly added item*/
unsigned char len[MAX_ITEM_NUM]; /*the length (bytes) of each item*/
} LOOP_QUEUE; /*the loop queue for rx interrupt handler*/
/*to store the receiced data*/
/*===================================================*/
/* functions */
/*===================================================*/
/*======================queue=========================*/
static void reset_queue(LOOP_QUEUE * pQueue );
static int query_queue_empty ( LOOP_QUEUE * pQueue ) ;
static int query_queue_full ( LOOP_QUEUE * pQueue );
static void in_queue ( LOOP_QUEUE * pQueue ) ;
static void out_queue ( LOOP_QUEUE * pQueue );
//static unsigned char member_of_queue( LOOP_QUEUE * pQueue, unsigned char sn );
/*======================s3c44b0_uart=======================*/
static void enable_s3c44b0_uart_thre_int(void);
static void disable_s3c44b0_uart_thre_int(void);
static void config_s3c44b0_uart(void);
/*====================file opterations====================*/
static ssize_t s3c44b0_uart_read(struct file *filp, char *buf, size_t count, loff_t *l);
static ssize_t s3c44b0_uart_write(struct file *filp, const char *buf, size_t count, loff_t *l);
static int s3c44b0_uart_open(struct inode *inode, struct file *filp);
static int s3c44b0_uart_release(struct inode *inode, struct file *filp);
static void s3c44b0_uart_handler(int irq, void *dev_idkp, struct pt_regs *regs);
int __init s3c44b0_uart_init(void);
void __exit s3c44b0_uart_cleanup(void);
static struct file_operations s3c44b0_uart_fops =
{ read: s3c44b0_uart_read,
write: s3c44b0_uart_write,
open: s3c44b0_uart_open,
release: s3c44b0_uart_release
}; /* the file operations structure.*/
#endif
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