diff options
Diffstat (limited to 'include/bsp/grcan.h')
| -rw-r--r-- | include/bsp/grcan.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/include/bsp/grcan.h b/include/bsp/grcan.h new file mode 100644 index 0000000000..5f4da5d7db --- /dev/null +++ b/include/bsp/grcan.h @@ -0,0 +1,194 @@ +/** + * @file + * @ingroup sparc_bsp + * @defgroup can GRCAN + * @ingroup can + * @brief Macros used for grcan controller + */ + +/* + * 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 __GRCAN_H__ +#define __GRCAN_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +struct grcan_regs { + volatile unsigned int conf; /* 0x00 */ + volatile unsigned int stat; /* 0x04 */ + volatile unsigned int ctrl; /* 0x08 */ + volatile unsigned int dummy0[3]; /* 0x0C-0x014 */ + volatile unsigned int smask; /* 0x18 */ + volatile unsigned int scode; /* 0x1C */ + + volatile unsigned int dummy1[56]; /* 0x20-0xFC */ + + volatile unsigned int pimsr; /* 0x100 */ + volatile unsigned int pimr; /* 0x104 */ + volatile unsigned int pisr; /* 0x108 */ + volatile unsigned int pir; /* 0x10C */ + volatile unsigned int imr; /* 0x110 */ + volatile unsigned int picr; /* 0x114 */ + + volatile unsigned int dummy2[58]; /* 0x118-0x1FC */ + + volatile unsigned int tx0ctrl; /* 0x200 */ + volatile unsigned int tx0addr; /* 0x204 */ + volatile unsigned int tx0size; /* 0x208 */ + volatile unsigned int tx0wr; /* 0x20C */ + volatile unsigned int tx0rd; /* 0x210 */ + volatile unsigned int tx0irq; /* 0x214 */ + + volatile unsigned int dummy3[58]; /* 0x218-0x2FC */ + + volatile unsigned int rx0ctrl; /* 0x300 */ + volatile unsigned int rx0addr; /* 0x304 */ + volatile unsigned int rx0size; /* 0x308 */ + volatile unsigned int rx0wr; /* 0x30C */ + volatile unsigned int rx0rd; /* 0x310 */ + volatile unsigned int rx0irq; /* 0x314 */ + volatile unsigned int rx0mask; /* 0x318 */ + volatile unsigned int rx0code; /* 0x31C */ +}; + +struct grcan_stats { + unsigned int passive_cnt; + unsigned int overrun_cnt; + unsigned int rxsync_cnt; + unsigned int txsync_cnt; + unsigned int txloss_cnt; + unsigned int ahberr_cnt; + unsigned int ints; +}; + +struct grcan_timing { + unsigned char scaler; + unsigned char ps1; + unsigned char ps2; + unsigned int rsj; + unsigned char bpr; +}; + +struct grcan_selection { + int selection; + int enable0; + int enable1; +}; + +struct grcan_filter { + unsigned long long mask; + unsigned long long code; +}; + +/* 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 unused; /* unused */ + unsigned char len; + unsigned char data[8]; + unsigned int id; +} CANMsg; + +#define GRCAN_CFG_ABORT 0x00000001 +#define GRCAN_CFG_ENABLE0 0x00000002 +#define GRCAN_CFG_ENABLE1 0x00000004 +#define GRCAN_CFG_SELECTION 0x00000008 +#define GRCAN_CFG_SILENT 0x00000010 +#define GRCAN_CFG_BPR 0x00000300 +#define GRCAN_CFG_RSJ 0x00007000 +#define GRCAN_CFG_PS1 0x00f00000 +#define GRCAN_CFG_PS2 0x000f0000 +#define GRCAN_CFG_SCALER 0xff000000 + +#define GRCAN_CFG_BPR_BIT 8 +#define GRCAN_CFG_RSJ_BIT 12 +#define GRCAN_CFG_PS1_BIT 20 +#define GRCAN_CFG_PS2_BIT 16 +#define GRCAN_CFG_SCALER_BIT 24 + +#define GRCAN_CTRL_RESET 0x2 +#define GRCAN_CTRL_ENABLE 0x1 + +#define GRCAN_TXCTRL_ENABLE 1 +#define GRCAN_TXCTRL_ONGOING 1 + +#define GRCAN_RXCTRL_ENABLE 1 +#define GRCAN_RXCTRL_ONGOING 1 + +/* Relative offset of IRQ sources to AMBA Plug&Play */ +#define GRCAN_IRQ_IRQ 0 +#define GRCAN_IRQ_TXSYNC 1 +#define GRCAN_IRQ_RXSYNC 2 + +#define GRCAN_ERR_IRQ 0x1 +#define GRCAN_OFF_IRQ 0x2 +#define GRCAN_OR_IRQ 0x4 +#define GRCAN_RXAHBERR_IRQ 0x8 +#define GRCAN_TXAHBERR_IRQ 0x10 +#define GRCAN_RXIRQ_IRQ 0x20 +#define GRCAN_TXIRQ_IRQ 0x40 +#define GRCAN_RXFULL_IRQ 0x80 +#define GRCAN_TXEMPTY_IRQ 0x100 +#define GRCAN_RX_IRQ 0x200 +#define GRCAN_TX_IRQ 0x400 +#define GRCAN_RXSYNC_IRQ 0x800 +#define GRCAN_TXSYNC_IRQ 0x1000 +#define GRCAN_RXERR_IRQ 0x2000 +#define GRCAN_TXERR_IRQ 0x4000 +#define GRCAN_RXMISS_IRQ 0x8000 +#define GRCAN_TXLOSS_IRQ 0x10000 + +#define GRCAN_STAT_PASS 0x1 +#define GRCAN_STAT_OFF 0x2 +#define GRCAN_STAT_OR 0x4 +#define GRCAN_STAT_AHBERR 0x8 +#define GRCAN_STAT_ACTIVE 0x10 +#define GRCAN_STAT_RXERRCNT 0xff00 +#define GRCAN_STAT_TXERRCNT 0xff0000 + +/* IOCTL Commands controlling operational + * mode + */ +#define GRCAN_IOC_START 1 /* Bring the link up after open or bus-off */ +#define GRCAN_IOC_STOP 2 /* stop to change baud rate/config or closing down */ +#define GRCAN_IOC_ISSTARTED 3 /* return RTEMS_SUCCESSFUL when started, othervise EBUSY */ +#define GRCAN_IOC_FLUSH 4 /* Waits until all TX messages has been sent */ + +/* IOCTL Commands that require connection + * to be stopped + */ +#define GRCAN_IOC_SET_SILENT 16 /* enable silent mode read only state */ +#define GRCAN_IOC_SET_ABORT 17 /* enable/disable stopping link on AHB Error */ +#define GRCAN_IOC_SET_SELECTION 18 /* Set Enable0,Enable1,Selection */ +#define GRCAN_IOC_SET_SPEED 19 /* Set baudrate by using driver's baud rate timing calculation routines */ +#define GRCAN_IOC_SET_BTRS 20 /* Set baudrate by specifying the timing registers manually */ + +/* IOCTL Commands can be called whenever */ +#define GRCAN_IOC_SET_RXBLOCK 32 /* Enable/disable Blocking on reception (until at least one message has been received) */ +#define GRCAN_IOC_SET_TXBLOCK 33 /* Enable/disable Blocking on transmission (until at least one message has been transmitted) */ +#define GRCAN_IOC_SET_TXCOMPLETE 34 /* Enable/disable Blocking until all requested messages has been sent */ +#define GRCAN_IOC_SET_RXCOMPLETE 35 /* Enable/disable Blocking until all requested has been received */ +#define GRCAN_IOC_GET_STATS 36 /* Get Statistics */ +#define GRCAN_IOC_CLR_STATS 37 /* Clear Statistics */ +#define GRCAN_IOC_SET_AFILTER 38 /* Set Acceptance filters, provide pointer to "struct grcan_filter" or NULL to disable filtering (let all messages pass) */ +#define GRCAN_IOC_SET_SFILTER 40 /* Set Sync Messages RX/TX filters, NULL disables the IRQ completely */ +#define GRCAN_IOC_GET_STATUS 41 /* Get status register of GRCAN core */ + + +void grcan_register_drv(void); + +#ifdef __cplusplus +} +#endif + +#endif |