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/*
* ifx_ssc.h defines some data sructures used in ifx_ssc.c
*
* Copyright (C) 2004 Michael Schoenenborn (IFX COM TI BT)
*
*
*/
#ifndef __IFX_SSC_H
#define __IFX_SSC_H
#ifdef __KERNEL__
#include <asm/amazon/ifx_ssc_defines.h>
#endif //__KERNEL__
#define PORT_CNT 1 // assume default value
/* symbolic constants to be used in SSC routines */
// ### TO DO: bad performance
#define IFX_SSC_TXFIFO_ITL 1
#define IFX_SSC_RXFIFO_ITL 1
struct ifx_ssc_statistics{
unsigned int abortErr; /* abort error */
unsigned int modeErr; /* master/slave mode error */
unsigned int txOvErr; /* TX Overflow error */
unsigned int txUnErr; /* TX Underrun error */
unsigned int rxOvErr; /* RX Overflow error */
unsigned int rxUnErr; /* RX Underrun error */
unsigned int rxBytes;
unsigned int txBytes;
};
struct ifx_ssc_hwopts {
unsigned int AbortErrDetect :1; /* Abort Error detection (in slave mode) */
unsigned int rxOvErrDetect :1; /* Receive Overflow Error detection */
unsigned int rxUndErrDetect :1; /* Receive Underflow Error detection */
unsigned int txOvErrDetect :1; /* Transmit Overflow Error detection */
unsigned int txUndErrDetect :1; /* Transmit Underflow Error detection */
unsigned int echoMode :1; /* Echo mode */
unsigned int loopBack :1; /* Loopback mode */
unsigned int idleValue :1; /* Idle value */
unsigned int clockPolarity :1; /* Idle clock is high or low */
unsigned int clockPhase :1; /* Tx on trailing or leading edge*/
unsigned int headingControl :1; /* LSB first or MSB first */
unsigned int dataWidth :6; /* from 2 up to 32 bits */
unsigned int masterSelect :1; /* Master or Slave mode */
unsigned int modeRxTx :2; /* rx/tx mode */
unsigned int gpoCs :8; /* choose outputs to use for chip select */
unsigned int gpoInv :8; /* invert GPO outputs */
};
struct ifx_ssc_frm_opts {
bool FrameEnable; // SFCON.SFEN
unsigned int DataLength; // SFCON.DLEN
unsigned int PauseLength; // SFCON.PLEN
unsigned int IdleData; // SFCON.IDAT
unsigned int IdleClock; // SFCON.ICLK
bool StopAfterPause; // SFCON.STOP
};
struct ifx_ssc_frm_status {
bool DataBusy; // SFSTAT.DBSY
bool PauseBusy; // SFSTAT.PBSY
unsigned int DataCount; // SFSTAT.DCNT
unsigned int PauseCount; // SFSTAT.PCNT
bool EnIntAfterData; // SFCON.IBEN
bool EnIntAfterPause;// SFCON.IAEN
};
typedef struct {
char *buf;
size_t len;
} ifx_ssc_buf_item_t;
// data structures for batch execution
typedef union {
struct {
bool save_options;
} init;
ifx_ssc_buf_item_t read;
ifx_ssc_buf_item_t write;
ifx_ssc_buf_item_t rd_wr;
unsigned int set_baudrate;
struct ifx_ssc_frm_opts set_frm;
unsigned int set_gpo;
struct ifx_ssc_hwopts set_hwopts;
}ifx_ssc_batch_cmd_param;
struct ifx_ssc_batch_list {
unsigned int cmd;
ifx_ssc_batch_cmd_param cmd_param;
struct ifx_ssc_batch_list *next;
};
#ifdef __KERNEL__
#define IFX_SSC_IS_MASTER(p) ((p)->opts.masterSelect == SSC_MASTER_MODE)
struct ifx_ssc_port{
unsigned long mapbase;
struct ifx_ssc_hwopts opts;
struct ifx_ssc_statistics stats;
struct ifx_ssc_frm_status frm_status;
struct ifx_ssc_frm_opts frm_opts;
/* wait queue for ifx_ssc_read() */
wait_queue_head_t rwait, pwait;
int port_nr;
char port_is_open; /* exclusive open - boolean */
// int no_of_bits; /* number of _valid_ bits */
// int elem_size; /* shift for element (no of bytes)*/
/* buffer and pointers to the read/write position */
char *rxbuf; /* buffer for RX */
char *rxbuf_end; /* buffer end pointer for RX */
volatile char *rxbuf_ptr; /* buffer write pointer for RX */
char *txbuf; /* buffer for TX */
char *txbuf_end; /* buffer end pointer for TX */
volatile char *txbuf_ptr; /* buffer read pointer for TX */
unsigned int baud;
/* each channel has its own interrupts */
/* (transmit/receive/error/frame) */
unsigned int txirq, rxirq, errirq, frmirq;
};
/* default values for SSC configuration */
// values of CON
#define IFX_SSC_DEF_IDLE_DATA 1 /* enable */
#define IFX_SSC_DEF_BYTE_VALID_CTL 1 /* enable */
#define IFX_SSC_DEF_DATA_WIDTH 32 /* bits */
#define IFX_SSC_DEF_ABRT_ERR_DETECT 0 /* disable */
#define IFX_SSC_DEF_RO_ERR_DETECT 1 /* enable */
#define IFX_SSC_DEF_RU_ERR_DETECT 0 /* disable */
#define IFX_SSC_DEF_TO_ERR_DETECT 0 /* disable */
#define IFX_SSC_DEF_TU_ERR_DETECT 0 /* disable */
#define IFX_SSC_DEF_LOOP_BACK 0 /* disable */
#define IFX_SSC_DEF_ECHO_MODE 0 /* disable */
#define IFX_SSC_DEF_CLOCK_POLARITY 0 /* low */
#define IFX_SSC_DEF_CLOCK_PHASE 1 /* 0: shift on leading edge, latch on trailling edge, 1, otherwise */
#define IFX_SSC_DEF_HEADING_CONTROL IFX_SSC_MSB_FIRST
#define IFX_SSC_DEF_MODE_RXTX IFX_SSC_MODE_RXTX
// other values
#define IFX_SSC_DEF_MASTERSLAVE IFX_SSC_MASTER_MODE /* master */
#define IFX_SSC_DEF_BAUDRATE 1000000
#define IFX_SSC_DEF_RMC 0x10
#define IFX_SSC_DEF_TXFIFO_FL 8
#define IFX_SSC_DEF_RXFIFO_FL 1
#if 1 //TODO
#define IFX_SSC_DEF_GPO_CS 2 /* no chip select */
#define IFX_SSC_DEF_GPO_INV 0 /* no chip select */
#else
#error "what is ur Chip Select???"
#endif
#define IFX_SSC_DEF_SFCON 0 /* no serial framing */
#if 0
#define IFX_SSC_DEF_IRNEN IFX_SSC_T_BIT | /* enable all int's */\
IFX_SSC_R_BIT | IFX_SSC_E_BIT | IFX_SSC_F_BIT
#endif
#define IFX_SSC_DEF_IRNEN IFX_SSC_T_BIT | /* enable all int's */\
IFX_SSC_R_BIT | IFX_SSC_E_BIT
#endif /* __KERNEL__ */
// batch execution commands
#define IFX_SSC_BATCH_CMD_INIT 1
#define IFX_SSC_BATCH_CMD_READ 2
#define IFX_SSC_BATCH_CMD_WRITE 3
#define IFX_SSC_BATCH_CMD_RD_WR 4
#define IFX_SSC_BATCH_CMD_SET_BAUDRATE 5
#define IFX_SSC_BATCH_CMD_SET_HWOPTS 6
#define IFX_SSC_BATCH_CMD_SET_FRM 7
#define IFX_SSC_BATCH_CMD_SET_GPO 8
#define IFX_SSC_BATCH_CMD_FIFO_FLUSH 9
//#define IFX_SSC_BATCH_CMD_
//#define IFX_SSC_BATCH_CMD_
#define IFX_SSC_BATCH_CMD_END_EXEC 0
/* Macros to configure SSC hardware */
/* headingControl: */
#define IFX_SSC_LSB_FIRST 0
#define IFX_SSC_MSB_FIRST 1
/* dataWidth: */
#define IFX_SSC_MIN_DATA_WIDTH 2
#define IFX_SSC_MAX_DATA_WIDTH 32
/* master/slave mode select */
#define IFX_SSC_MASTER_MODE 1
#define IFX_SSC_SLAVE_MODE 0
/* rx/tx mode */
// ### TO DO: !!! ATTENTION! Hardware dependency => move to ifx_ssc_defines.h
#define IFX_SSC_MODE_RXTX 0
#define IFX_SSC_MODE_RX 1
#define IFX_SSC_MODE_TX 2
#define IFX_SSC_MODE_OFF 3
#define IFX_SSC_MODE_MASK IFX_SSC_MODE_RX | IFX_SSC_MODE_TX
/* GPO values */
#define IFX_SSC_MAX_GPO_OUT 7
#define IFX_SSC_RXREQ_BLOCK_SIZE 32768
/***********************/
/* defines for ioctl's */
/***********************/
#define IFX_SSC_IOCTL_MAGIC 'S'
/* read out the statistics */
#define IFX_SSC_STATS_READ _IOR(IFX_SSC_IOCTL_MAGIC, 1, struct ifx_ssc_statistics)
/* clear the statistics */
#define IFX_SSC_STATS_RESET _IO(IFX_SSC_IOCTL_MAGIC, 2)
/* set the baudrate */
#define IFX_SSC_BAUD_SET _IOW(IFX_SSC_IOCTL_MAGIC, 3, unsigned int)
/* get the current baudrate */
#define IFX_SSC_BAUD_GET _IOR(IFX_SSC_IOCTL_MAGIC, 4, unsigned int)
/* set hardware options */
#define IFX_SSC_HWOPTS_SET _IOW(IFX_SSC_IOCTL_MAGIC, 5, struct ifx_ssc_hwopts)
/* get the current hardware options */
#define IFX_SSC_HWOPTS_GET _IOR(IFX_SSC_IOCTL_MAGIC, 6, struct ifx_ssc_hwopts)
/* set transmission mode */
#define IFX_SSC_RXTX_MODE_SET _IOW(IFX_SSC_IOCTL_MAGIC, 7, unsigned int)
/* get the current transmission mode */
#define IFX_SSC_RXTX_MODE_GET _IOR(IFX_SSC_IOCTL_MAGIC, 8, unsigned int)
/* abort transmission */
#define IFX_SSC_ABORT _IO(IFX_SSC_IOCTL_MAGIC, 9)
#define IFX_SSC_FIFO_FLUSH _IO(IFX_SSC_IOCTL_MAGIC, 9)
/* set general purpose outputs */
#define IFX_SSC_GPO_OUT_SET _IOW(IFX_SSC_IOCTL_MAGIC, 32, unsigned int)
/* clear general purpose outputs */
#define IFX_SSC_GPO_OUT_CLR _IOW(IFX_SSC_IOCTL_MAGIC, 33, unsigned int)
/* get general purpose outputs */
#define IFX_SSC_GPO_OUT_GET _IOR(IFX_SSC_IOCTL_MAGIC, 34, unsigned int)
/*** serial framing ***/
/* get status of serial framing */
#define IFX_SSC_FRM_STATUS_GET _IOR(IFX_SSC_IOCTL_MAGIC, 48, struct ifx_ssc_frm_status)
/* get counter reload values and control bits */
#define IFX_SSC_FRM_CONTROL_GET _IOR(IFX_SSC_IOCTL_MAGIC, 49, struct ifx_ssc_frm_opts)
/* set counter reload values and control bits */
#define IFX_SSC_FRM_CONTROL_SET _IOW(IFX_SSC_IOCTL_MAGIC, 50, struct ifx_ssc_frm_opts)
/*** batch execution ***/
/* do batch execution */
#define IFX_SSC_BATCH_EXEC _IOW(IFX_SSC_IOCTL_MAGIC, 64, struct ifx_ssc_batch_list)
#ifdef __KERNEL__
// routines from ifx_ssc.c
// ### TO DO
/* kernel interface for read and write */
ssize_t ifx_ssc_kread(int, char *, size_t);
ssize_t ifx_ssc_kwrite(int, const char *, size_t);
#ifdef CONFIG_IFX_VP_KERNEL_TEST
void ifx_ssc_tc(void);
#endif // CONFIG_IFX_VP_KERNEL_TEST
#endif //__KERNEL__
#endif // __IFX_SSC_H
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