📄 flexcan.h
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/* * Flex CAN Memory Map * * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. * TsiChung Liew (Tsi-Chung.Liew@freescale.com) * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */#ifndef __FLEXCAN_H__#define __FLEXCAN_H__/* FlexCan Message Buffer */typedef struct can_msgbuf_ctrl {#ifdef CONFIG_M5282 u8 tmstamp; /* 0x00 Timestamp */ u8 ctrl; /* 0x01 Control */ u16 idh; /* 0x02 ID High */ u16 idl; /* 0x04 ID High */ u8 data[8]; /* 0x06 8 Byte Data Field */ u16 res; /* 0x0E */#else u16 ctrl; /* 0x00 Control/Status */ u16 tmstamp; /* 0x02 Timestamp */ u32 id; /* 0x04 Identifier */ u8 data[8]; /* 0x08 8 Byte Data Field */#endif} can_msg_t;#ifdef CONFIG_M5282/* MSGBUF CTRL */#define CAN_MSGBUF_CTRL_CODE(x) (((x) & 0x0F) << 4)#define CAN_MSGBUF_CTRL_CODE_MASK (0x0F)#define CAN_MSGBUF_CTRL_LEN(x) ((x) & 0x0F)#define CAN_MSGBUF_CTRL_LEN_MASK (0xF0)/* MSGBUF ID */#define CAN_MSGBUF_IDH_STD(x) (((x) & 0x07FF) << 5)#define CAN_MSGBUF_IDH_STD_MASK (0xE003FFFF)#define CAN_MSGBUF_IDH_SRR (0x0010)#define CAN_MSGBUF_IDH_IDE (0x0080)#define CAN_MSGBUF_IDH_EXTH(x) ((x) & 0x07)#define CAN_MSGBUF_IDH_EXTH_MASK (0xFFF8)#define CAN_MSGBUF_IDL_EXTL(x) (((x) & 0x7FFF) << 1)#define CAN_MSGBUF_IDL_EXTL_MASK (0xFFFE)#define CAN_MSGBUF_IDL_RTR (0x0001)#else/* MSGBUF CTRL */#define CAN_MSGBUF_CTRL_CODE(x) (((x) & 0x000F) << 8)#define CAN_MSGBUF_CTRL_CODE_MASK (0xF0FF)#define CAN_MSGBUF_CTRL_SRR (0x0040)#define CAN_MSGBUF_CTRL_IDE (0x0020)#define CAN_MSGBUF_CTRL_RTR (0x0010)#define CAN_MSGBUF_CTRL_LEN(x) ((x) & 0x000F)#define CAN_MSGBUF_CTRL_LEN_MASK (0xFFF0)/* MSGBUF ID */#define CAN_MSGBUF_ID_STD(x) (((x) & 0x000007FF) << 18)#define CAN_MSGBUF_ID_STD_MASK (0xE003FFFF)#define CAN_MSGBUF_ID_EXT(x) ((x) & 0x0003FFFF)#define CAN_MSGBUF_ID_EXT_MASK (0xFFFC0000)#endif/* FlexCan module */typedef struct can_ctrl { u32 mcr; /* 0x00 Module Configuration */ u32 ctrl; /* 0x04 Control */ u32 timer; /* 0x08 Free Running Timer */ u32 res1; /* 0x0C */ u32 rxgmsk; /* 0x10 Rx Global Mask */ u32 rx14msk; /* 0x14 RxBuffer 14 Mask */ u32 rx15msk; /* 0x18 RxBuffer 15 Mask */#ifdef CONFIG_M5282 u32 res2; /* 0x1C */ u16 errstat; /* 0x20 Error and status */ u16 imsk; /* 0x22 Interrupt Mask */ u16 iflag; /* 0x24 Interrupt Flag */ u16 errcnt; /* 0x26 Error Counter */ u32 res3[3]; /* 0x28 - 0x33 */#else u16 res2; /* 0x1C */ u16 errcnt; /* 0x1E Error Counter */ u16 res3; /* 0x20 */ u16 errstat; /* 0x22 Error and status */ u32 res4; /* 0x24 */ u32 imsk; /* 0x28 Interrupt Mask */ u32 res5; /* 0x2C */ u16 iflag; /* 0x30 Interrupt Flag */#endif u32 res6[19]; /* 0x34 - 0x7F */ void *msgbuf; /* 0x80 Message Buffer 0-15 */} can_t;/* MCR */#define CAN_MCR_MDIS (0x80000000)#define CAN_MCR_FRZ (0x40000000)#define CAN_MCR_HALT (0x10000000)#define CAN_MCR_NORDY (0x08000000)#define CAN_MCF_WAKEMSK (0x04000000) /* 5282 */#define CAN_MCR_SOFTRST (0x02000000)#define CAN_MCR_FRZACK (0x01000000)#define CAN_MCR_SUPV (0x00800000)#define CAN_MCR_SELFWAKE (0x00400000) /* 5282 */#define CAN_MCR_APS (0x00200000) /* 5282 */#define CAN_MCR_LPMACK (0x00100000)#define CAN_MCF_BCC (0x00010000)#define CAN_MCR_MAXMB(x) ((x) & 0x0F)#define CAN_MCR_MAXMB_MASK (0xFFFFFFF0)/* CTRL */#define CAN_CTRL_PRESDIV(x) (((x) & 0xFF) << 24)#define CAN_CTRL_PRESDIV_MASK (0x00FFFFFF)#define CAN_CTRL_RJW(x) (((x) & 0x03) << 22)#define CAN_CTRL_RJW_MASK (0xFF3FFFFF)#define CAN_CTRL_PSEG1(x) (((x) & 0x07) << 19)#define CAN_CTRL_PSEG1_MASK (0xFFC7FFFF)#define CAN_CTRL_PSEG2(x) (((x) & 0x07) << 16)#define CAN_CTRL_PSEG2_MASK (0xFFF8FFFF)#define CAN_CTRL_BOFFMSK (0x00008000)#define CAN_CTRL_ERRMSK (0x00004000)#define CAN_CTRL_CLKSRC (0x00002000)#define CAN_CTRL_LPB (0x00001000)#define CAN_CTRL_RXMODE (0x00000400) /* 5282 */#define CAN_CTRL_TXMODE(x) (((x) & 0x03) << 8) /* 5282 */#define CAN_CTRL_TXMODE_MASK (0xFFFFFCFF) /* 5282 */#define CAN_CTRL_TXMODE_CAN0 (0x00000000) /* 5282 */#define CAN_CTRL_TXMODE_CAN1 (0x00000100) /* 5282 */#define CAN_CTRL_TXMODE_OPEN (0x00000200) /* 5282 */#define CAN_CTRL_SMP (0x00000080)#define CAN_CTRL_BOFFREC (0x00000040)#define CAN_CTRL_TSYNC (0x00000020)#define CAN_CTRL_LBUF (0x00000010)#define CAN_CTRL_LOM (0x00000008)#define CAN_CTRL_PROPSEG(x) ((x) & 0x07)#define CAN_CTRL_PROPSEG_MASK (0xFFFFFFF8)/* TIMER *//* Note: PRESDIV, RJW, PSG1, and PSG2 are part of timer in 5282 */#define CAN_TIMER(x) ((x) & 0xFFFF)#define CAN_TIMER_MASK (0xFFFF0000)/* RXGMASK */#ifdef CONFIG_M5282#define CAN_RXGMSK_MI_STD(x) (((x) & 0x000007FF) << 21)#define CAN_RXGMSK_MI_STD_MASK (0x001FFFFF)#define CAN_RXGMSK_MI_EXT(x) (((x) & 0x0003FFFF) << 1)#define CAN_RXGMSK_MI_EXT_MASK (0xFFF80001)#else#define CAN_RXGMSK_MI_STD(x) (((x) & 0x000007FF) << 18)#define CAN_RXGMSK_MI_STD_MASK (0xE003FFFF)#define CAN_RXGMSK_MI_EXT(x) ((x) & 0x0003FFFF)#define CAN_RXGMSK_MI_EXT_MASK (0xFFFC0000)#endif/* ERRCNT */#define CAN_ERRCNT_RXECTR(x) (((x) & 0xFF) << 8)#define CAN_ERRCNT_RXECTR_MASK (0x00FF)#define CAN_ERRCNT_TXECTR(x) ((x) & 0xFF)#define CAN_ERRCNT_TXECTR_MASK (0xFF00)/* ERRSTAT */#define CAN_ERRSTAT_BITERR1 (0x8000)#define CAN_ERRSTAT_BITERR0 (0x4000)#define CAN_ERRSTAT_ACKERR (0x2000)#define CAN_ERRSTAT_CRCERR (0x1000)#define CAN_ERRSTAT_FRMERR (0x0800)#define CAN_ERRSTAT_STFERR (0x0400)#define CAN_ERRSTAT_TXWRN (0x0200)#define CAN_ERRSTAT_RXWRN (0x0100)#define CAN_ERRSTAT_IDLE (0x0080)#define CAN_ERRSTAT_TXRX (0x0040)#define CAN_ERRSTAT_FLT_MASK (0xFFCF)#define CAN_ERRSTAT_FLT_BUSOFF (0x0020)#define CAN_ERRSTAT_FLT_PASSIVE (0x0010)#define CAN_ERRSTAT_FLT_ACTIVE (0x0000)#ifdef CONFIG_M5282#define CAN_ERRSTAT_BOFFINT (0x0004)#define CAN_ERRSTAT_ERRINT (0x0002)#else#define CAN_ERRSTAT_ERRINT (0x0004)#define CAN_ERRSTAT_BOFFINT (0x0002)#define CAN_ERRSTAT_WAKEINT (0x0001)#endif/* IMASK */#ifdef CONFIG_M5253#define CAN_IMASK_BUFnM(x) (1 << (x & 0xFFFFFFFF))#define CAN_IMASK_BUFnM_MASKBIT(x) ~CAN_IMASK_BUFnM(x)#else#define CAN_IMASK_BUFnM(x) (1 << (x & 0xFFFF))#define CAN_IMASK_BUFnM_MASKBIT(x) ~CAN_IMASK_BUFnM(x)#endif/* IFLAG */#ifdef CONFIG_M5253#define CAN_IFLAG_BUFnM(x) (1 << (x & 0xFFFFFFFF))#define CAN_IFLAG_BUFnM_MASKBIT(x) ~CAN_IFLAG_BUFnM(x)#else#define CAN_IFLAG_BUFnM(x) (1 << (x & 0xFFFF))#define CAN_IFLAG_BUFnM_MASKBIT(x) ~CAN_IFLAG_BUFnM(x)#endif#endif /* __FLEXCAN_H__ */⌨️ 快捷键说明
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