--- /dev/null
+/*
+ * Flex CAN Memory Map
+ *
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#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__ */
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