diff options
Diffstat (limited to 'bsps/sparc/include/bsp/occan.h')
| -rw-r--r-- | bsps/sparc/include/bsp/occan.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/bsps/sparc/include/bsp/occan.h b/bsps/sparc/include/bsp/occan.h new file mode 100644 index 0000000000..0bf34dee48 --- /dev/null +++ b/bsps/sparc/include/bsp/occan.h @@ -0,0 +1,165 @@ +/** + * @file + * @ingroup can + * @brief Gaisler wrapper to OpenCores CAN - driver interface + */ + +/* + * COPYRIGHT (c) 2007. + * Cobham Gaisler AB. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifndef __OCCAN_DRIVER_H__ +#define __OCCAN_DRIVER_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +/* CAN MESSAGE */ +typedef struct { + char extended; /* 1= Extended Frame (29-bit id), 0= STD Frame (11-bit id) */ + char rtr; /* RTR - Remote Transmission Request */ + char sshot; /* single shot */ + unsigned char len; + unsigned char data[8]; + unsigned int id; +} CANMsg; + +typedef struct { + /* tx/rx stats */ + unsigned int rx_msgs; + unsigned int tx_msgs; + + /* Error Interrupt counters */ + unsigned int err_warn; + unsigned int err_dovr; + unsigned int err_errp; + unsigned int err_arb; + unsigned int err_bus; + + /**** BUS ERRORS (err_arb) ****/ + + /* ALC 4-0 */ + unsigned int err_arb_bitnum[32]; /* At what bit arbitration is lost */ + + /******************************/ + + /**** BUS ERRORS (err_bus) ****/ + + /* ECC 7-6 */ + unsigned int err_bus_bit; /* Bit error */ + unsigned int err_bus_form; /* Form Error */ + unsigned int err_bus_stuff; /* Stuff Error */ + unsigned int err_bus_other; /* Other Error */ + + /* ECC 5 */ + unsigned int err_bus_rx; /* Errors during Reception */ + unsigned int err_bus_tx; /* Errors during Transmission */ + + /* ECC 4:0 */ + unsigned int err_bus_segs[32]; /* Segment (Where in frame error occured) + * See OCCAN_SEG_* defines for indexes + */ + + /******************************/ + + + /* total number of interrupts */ + unsigned int ints; + + /* software monitoring hw errors */ + unsigned int tx_buf_error; + + /* Software fifo overrun */ + unsigned int rx_sw_dovr; + +} occan_stats; + +/* indexes into occan_stats.err_bus_segs[index] */ +#define OCCAN_SEG_ID28 0x02 /* ID field bit 28:21 */ +#define OCCAN_SEG_ID20 0x06 /* ID field bit 20:18 */ +#define OCCAN_SEG_ID17 0x07 /* ID field bit 17:13 */ +#define OCCAN_SEG_ID12 0x0f /* ID field bit 12:5 */ +#define OCCAN_SEG_ID4 0x0e /* ID field bit 4:0 */ + +#define OCCAN_SEG_START 0x03 /* Start of Frame */ +#define OCCAN_SEG_SRTR 0x04 /* Bit SRTR */ +#define OCCAN_SEG_IDE 0x05 /* Bit IDE */ +#define OCCAN_SEG_RTR 0x0c /* Bit RTR */ +#define OCCAN_SEG_RSV0 0x09 /* Reserved bit 0 */ +#define OCCAN_SEG_RSV1 0x0d /* Reserved bit 1 */ + +#define OCCAN_SEG_DLEN 0x0b /* Data Length code */ +#define OCCAN_SEG_DFIELD 0x0a /* Data Field */ + +#define OCCAN_SEG_CRC_SEQ 0x08 /* CRC Sequence */ +#define OCCAN_SEG_CRC_DELIM 0x18 /* CRC Delimiter */ + +#define OCCAN_SEG_ACK_SLOT 0x19 /* Acknowledge slot */ +#define OCCAN_SEG_ACK_DELIM 0x1b /* Acknowledge delimiter */ +#define OCCAN_SEG_EOF 0x1a /* End Of Frame */ +#define OCCAN_SEG_INTERMISSION 0x12 /* Intermission */ +#define OCCAN_SEG_ACT_ERR 0x11 /* Active error flag */ +#define OCCAN_SEG_PASS_ERR 0x16 /* Passive error flag */ +#define OCCAN_SEG_DOMINANT 0x13 /* Tolerate dominant bits */ +#define OCCAN_SEG_EDELIM 0x17 /* Error delimiter */ +#define OCCAN_SEG_OVERLOAD 0x1c /* overload flag */ + + +#define CANMSG_OPT_RTR 0x40 /* RTR Frame */ +#define CANMSG_OPT_EXTENDED 0x80 /* Exteneded frame */ +#define CANMSG_OPT_SSHOT 0x01 /* Single Shot, no retry */ + +#define OCCAN_IOC_START 1 +#define OCCAN_IOC_STOP 2 + +#define OCCAN_IOC_GET_CONF 3 +#define OCCAN_IOC_GET_STATS 4 +#define OCCAN_IOC_GET_STATUS 5 + +#define OCCAN_IOC_SET_SPEED 6 +#define OCCAN_IOC_SPEED_AUTO 7 +#define OCCAN_IOC_SET_LINK 8 +#define OCCAN_IOC_SET_FILTER 9 +#define OCCAN_IOC_SET_BLK_MODE 10 +#define OCCAN_IOC_SET_BUFLEN 11 +#define OCCAN_IOC_SET_BTRS 12 + + +struct occan_afilter { + unsigned char code[4]; + unsigned char mask[4]; + int single_mode; +}; + +#define OCCAN_STATUS_RESET 0x01 +#define OCCAN_STATUS_OVERRUN 0x02 +#define OCCAN_STATUS_WARN 0x04 +#define OCCAN_STATUS_ERR_PASSIVE 0x08 +#define OCCAN_STATUS_ERR_BUSOFF 0x10 +#define OCCAN_STATUS_QUEUE_ERROR 0x80 + +#define OCCAN_BLK_MODE_RX 0x1 +#define OCCAN_BLK_MODE_TX 0x2 + +void occan_register_drv (void); + + +#define OCCAN_SPEED_500K 500000 +#define OCCAN_SPEED_250K 250000 +#define OCCAN_SPEED_125K 125000 +#define OCCAN_SPEED_75K 75000 +#define OCCAN_SPEED_50K 50000 +#define OCCAN_SPEED_25K 25000 +#define OCCAN_SPEED_10K 10000 + +#ifdef __cplusplus +} +#endif + +#endif |