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/*
* bfin_can.h - interface to Blackfin CANs
*
* Copyright 2004-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __ASM_BFIN_CAN_H__
#define __ASM_BFIN_CAN_H__
/*
* transmit and receive channels
*/
#define TRANSMIT_CHL 24
#define RECEIVE_STD_CHL 0
#define RECEIVE_EXT_CHL 4
#define RECEIVE_RTR_CHL 8
#define RECEIVE_EXT_RTR_CHL 12
#define MAX_CHL_NUMBER 32
/*
* All Blackfin system MMRs are padded to 32bits even if the register
* itself is only 16bits. So use a helper macro to streamline this.
*/
#define __BFP(m) u16 m; u16 __pad_##m
/*
* bfin can registers layout
*/
struct bfin_can_mask_regs {
__BFP(aml);
__BFP(amh);
};
struct bfin_can_channel_regs {
/* data[0,2,4,6] -> data{0,1,2,3} while data[1,3,5,7] is padding */
u16 data[8];
__BFP(dlc);
__BFP(tsv);
__BFP(id0);
__BFP(id1);
};
struct bfin_can_regs {
/*
* global control and status registers
*/
__BFP(mc1); /* offset 0x00 */
__BFP(md1); /* offset 0x04 */
__BFP(trs1); /* offset 0x08 */
__BFP(trr1); /* offset 0x0c */
__BFP(ta1); /* offset 0x10 */
__BFP(aa1); /* offset 0x14 */
__BFP(rmp1); /* offset 0x18 */
__BFP(rml1); /* offset 0x1c */
__BFP(mbtif1); /* offset 0x20 */
__BFP(mbrif1); /* offset 0x24 */
__BFP(mbim1); /* offset 0x28 */
__BFP(rfh1); /* offset 0x2c */
__BFP(opss1); /* offset 0x30 */
u32 __pad1[3];
__BFP(mc2); /* offset 0x40 */
__BFP(md2); /* offset 0x44 */
__BFP(trs2); /* offset 0x48 */
__BFP(trr2); /* offset 0x4c */
__BFP(ta2); /* offset 0x50 */
__BFP(aa2); /* offset 0x54 */
__BFP(rmp2); /* offset 0x58 */
__BFP(rml2); /* offset 0x5c */
__BFP(mbtif2); /* offset 0x60 */
__BFP(mbrif2); /* offset 0x64 */
__BFP(mbim2); /* offset 0x68 */
__BFP(rfh2); /* offset 0x6c */
__BFP(opss2); /* offset 0x70 */
u32 __pad2[3];
__BFP(clock); /* offset 0x80 */
__BFP(timing); /* offset 0x84 */
__BFP(debug); /* offset 0x88 */
__BFP(status); /* offset 0x8c */
__BFP(cec); /* offset 0x90 */
__BFP(gis); /* offset 0x94 */
__BFP(gim); /* offset 0x98 */
__BFP(gif); /* offset 0x9c */
__BFP(control); /* offset 0xa0 */
__BFP(intr); /* offset 0xa4 */
__BFP(version); /* offset 0xa8 */
__BFP(mbtd); /* offset 0xac */
__BFP(ewr); /* offset 0xb0 */
__BFP(esr); /* offset 0xb4 */
u32 __pad3[2];
__BFP(ucreg); /* offset 0xc0 */
__BFP(uccnt); /* offset 0xc4 */
__BFP(ucrc); /* offset 0xc8 */
__BFP(uccnf); /* offset 0xcc */
u32 __pad4[1];
__BFP(version2); /* offset 0xd4 */
u32 __pad5[10];
/*
* channel(mailbox) mask and message registers
*/
struct bfin_can_mask_regs msk[MAX_CHL_NUMBER]; /* offset 0x100 */
struct bfin_can_channel_regs chl[MAX_CHL_NUMBER]; /* offset 0x200 */
};
#undef __BFP
/* CAN_CONTROL Masks */
#define SRS 0x0001 /* Software Reset */
#define DNM 0x0002 /* Device Net Mode */
#define ABO 0x0004 /* Auto-Bus On Enable */
#define TXPRIO 0x0008 /* TX Priority (Priority/Mailbox*) */
#define WBA 0x0010 /* Wake-Up On CAN Bus Activity Enable */
#define SMR 0x0020 /* Sleep Mode Request */
#define CSR 0x0040 /* CAN Suspend Mode Request */
#define CCR 0x0080 /* CAN Configuration Mode Request */
/* CAN_STATUS Masks */
#define WT 0x0001 /* TX Warning Flag */
#define WR 0x0002 /* RX Warning Flag */
#define EP 0x0004 /* Error Passive Mode */
#define EBO 0x0008 /* Error Bus Off Mode */
#define SMA 0x0020 /* Sleep Mode Acknowledge */
#define CSA 0x0040 /* Suspend Mode Acknowledge */
#define CCA 0x0080 /* Configuration Mode Acknowledge */
#define MBPTR 0x1F00 /* Mailbox Pointer */
#define TRM 0x4000 /* Transmit Mode */
#define REC 0x8000 /* Receive Mode */
/* CAN_CLOCK Masks */
#define BRP 0x03FF /* Bit-Rate Pre-Scaler */
/* CAN_TIMING Masks */
#define TSEG1 0x000F /* Time Segment 1 */
#define TSEG2 0x0070 /* Time Segment 2 */
#define SAM 0x0080 /* Sampling */
#define SJW 0x0300 /* Synchronization Jump Width */
/* CAN_DEBUG Masks */
#define DEC 0x0001 /* Disable CAN Error Counters */
#define DRI 0x0002 /* Disable CAN RX Input */
#define DTO 0x0004 /* Disable CAN TX Output */
#define DIL 0x0008 /* Disable CAN Internal Loop */
#define MAA 0x0010 /* Mode Auto-Acknowledge Enable */
#define MRB 0x0020 /* Mode Read Back Enable */
#define CDE 0x8000 /* CAN Debug Enable */
/* CAN_CEC Masks */
#define RXECNT 0x00FF /* Receive Error Counter */
#define TXECNT 0xFF00 /* Transmit Error Counter */
/* CAN_INTR Masks */
#define MBRIRQ 0x0001 /* Mailbox Receive Interrupt */
#define MBTIRQ 0x0002 /* Mailbox Transmit Interrupt */
#define GIRQ 0x0004 /* Global Interrupt */
#define SMACK 0x0008 /* Sleep Mode Acknowledge */
#define CANTX 0x0040 /* CAN TX Bus Value */
#define CANRX 0x0080 /* CAN RX Bus Value */
/* CAN_MBxx_ID1 and CAN_MBxx_ID0 Masks */
#define DFC 0xFFFF /* Data Filtering Code (If Enabled) (ID0) */
#define EXTID_LO 0xFFFF /* Lower 16 Bits of Extended Identifier (ID0) */
#define EXTID_HI 0x0003 /* Upper 2 Bits of Extended Identifier (ID1) */
#define BASEID 0x1FFC /* Base Identifier */
#define IDE 0x2000 /* Identifier Extension */
#define RTR 0x4000 /* Remote Frame Transmission Request */
#define AME 0x8000 /* Acceptance Mask Enable */
/* CAN_MBxx_TIMESTAMP Masks */
#define TSV 0xFFFF /* Timestamp */
/* CAN_MBxx_LENGTH Masks */
#define DLC 0x000F /* Data Length Code */
/* CAN_AMxxH and CAN_AMxxL Masks */
#define DFM 0xFFFF /* Data Field Mask (If Enabled) (CAN_AMxxL) */
#define EXTID_LO 0xFFFF /* Lower 16 Bits of Extended Identifier (CAN_AMxxL) */
#define EXTID_HI 0x0003 /* Upper 2 Bits of Extended Identifier (CAN_AMxxH) */
#define BASEID 0x1FFC /* Base Identifier */
#define AMIDE 0x2000 /* Acceptance Mask ID Extension Enable */
#define FMD 0x4000 /* Full Mask Data Field Enable */
#define FDF 0x8000 /* Filter On Data Field Enable */
/* CAN_MC1 Masks */
#define MC0 0x0001 /* Enable Mailbox 0 */
#define MC1 0x0002 /* Enable Mailbox 1 */
#define MC2 0x0004 /* Enable Mailbox 2 */
#define MC3 0x0008 /* Enable Mailbox 3 */
#define MC4 0x0010 /* Enable Mailbox 4 */
#define MC5 0x0020 /* Enable Mailbox 5 */
#define MC6 0x0040 /* Enable Mailbox 6 */
#define MC7 0x0080 /* Enable Mailbox 7 */
#define MC8 0x0100 /* Enable Mailbox 8 */
#define MC9 0x0200 /* Enable Mailbox 9 */
#define MC10 0x0400 /* Enable Mailbox 10 */
#define MC11 0x0800 /* Enable Mailbox 11 */
#define MC12 0x1000 /* Enable Mailbox 12 */
#define MC13 0x2000 /* Enable Mailbox 13 */
#define MC14 0x4000 /* Enable Mailbox 14 */
#define MC15 0x8000 /* Enable Mailbox 15 */
/* CAN_MC2 Masks */
#define MC16 0x0001 /* Enable Mailbox 16 */
#define MC17 0x0002 /* Enable Mailbox 17 */
#define MC18 0x0004 /* Enable Mailbox 18 */
#define MC19 0x0008 /* Enable Mailbox 19 */
#define MC20 0x0010 /* Enable Mailbox 20 */
#define MC21 0x0020 /* Enable Mailbox 21 */
#define MC22 0x0040 /* Enable Mailbox 22 */
#define MC23 0x0080 /* Enable Mailbox 23 */
#define MC24 0x0100 /* Enable Mailbox 24 */
#define MC25 0x0200 /* Enable Mailbox 25 */
#define MC26 0x0400 /* Enable Mailbox 26 */
#define MC27 0x0800 /* Enable Mailbox 27 */
#define MC28 0x1000 /* Enable Mailbox 28 */
#define MC29 0x2000 /* Enable Mailbox 29 */
#define MC30 0x4000 /* Enable Mailbox 30 */
#define MC31 0x8000 /* Enable Mailbox 31 */
/* CAN_MD1 Masks */
#define MD0 0x0001 /* Enable Mailbox 0 For Receive */
#define MD1 0x0002 /* Enable Mailbox 1 For Receive */
#define MD2 0x0004 /* Enable Mailbox 2 For Receive */
#define MD3 0x0008 /* Enable Mailbox 3 For Receive */
#define MD4 0x0010 /* Enable Mailbox 4 For Receive */
#define MD5 0x0020 /* Enable Mailbox 5 For Receive */
#define MD6 0x0040 /* Enable Mailbox 6 For Receive */
#define MD7 0x0080 /* Enable Mailbox 7 For Receive */
#define MD8 0x0100 /* Enable Mailbox 8 For Receive */
#define MD9 0x0200 /* Enable Mailbox 9 For Receive */
#define MD10 0x0400 /* Enable Mailbox 10 For Receive */
#define MD11 0x0800 /* Enable Mailbox 11 For Receive */
#define MD12 0x1000 /* Enable Mailbox 12 For Receive */
#define MD13 0x2000 /* Enable Mailbox 13 For Receive */
#define MD14 0x4000 /* Enable Mailbox 14 For Receive */
#define MD15 0x8000 /* Enable Mailbox 15 For Receive */
/* CAN_MD2 Masks */
#define MD16 0x0001 /* Enable Mailbox 16 For Receive */
#define MD17 0x0002 /* Enable Mailbox 17 For Receive */
#define MD18 0x0004 /* Enable Mailbox 18 For Receive */
#define MD19 0x0008 /* Enable Mailbox 19 For Receive */
#define MD20 0x0010 /* Enable Mailbox 20 For Receive */
#define MD21 0x0020 /* Enable Mailbox 21 For Receive */
#define MD22 0x0040 /* Enable Mailbox 22 For Receive */
#define MD23 0x0080 /* Enable Mailbox 23 For Receive */
#define MD24 0x0100 /* Enable Mailbox 24 For Receive */
#define MD25 0x0200 /* Enable Mailbox 25 For Receive */
#define MD26 0x0400 /* Enable Mailbox 26 For Receive */
#define MD27 0x0800 /* Enable Mailbox 27 For Receive */
#define MD28 0x1000 /* Enable Mailbox 28 For Receive */
#define MD29 0x2000 /* Enable Mailbox 29 For Receive */
#define MD30 0x4000 /* Enable Mailbox 30 For Receive */
#define MD31 0x8000 /* Enable Mailbox 31 For Receive */
/* CAN_RMP1 Masks */
#define RMP0 0x0001 /* RX Message Pending In Mailbox 0 */
#define RMP1 0x0002 /* RX Message Pending In Mailbox 1 */
#define RMP2 0x0004 /* RX Message Pending In Mailbox 2 */
#define RMP3 0x0008 /* RX Message Pending In Mailbox 3 */
#define RMP4 0x0010 /* RX Message Pending In Mailbox 4 */
#define RMP5 0x0020 /* RX Message Pending In Mailbox 5 */
#define RMP6 0x0040 /* RX Message Pending In Mailbox 6 */
#define RMP7 0x0080 /* RX Message Pending In Mailbox 7 */
#define RMP8 0x0100 /* RX Message Pending In Mailbox 8 */
#define RMP9 0x0200 /* RX Message Pending In Mailbox 9 */
#define RMP10 0x0400 /* RX Message Pending In Mailbox 10 */
#define RMP11 0x0800 /* RX Message Pending In Mailbox 11 */
#define RMP12 0x1000 /* RX Message Pending In Mailbox 12 */
#define RMP13 0x2000 /* RX Message Pending In Mailbox 13 */
#define RMP14 0x4000 /* RX Message Pending In Mailbox 14 */
#define RMP15 0x8000 /* RX Message Pending In Mailbox 15 */
/* CAN_RMP2 Masks */
#define RMP16 0x0001 /* RX Message Pending In Mailbox 16 */
#define RMP17 0x0002 /* RX Message Pending In Mailbox 17 */
#define RMP18 0x0004 /* RX Message Pending In Mailbox 18 */
#define RMP19 0x0008 /* RX Message Pending In Mailbox 19 */
#define RMP20 0x0010 /* RX Message Pending In Mailbox 20 */
#define RMP21 0x0020 /* RX Message Pending In Mailbox 21 */
#define RMP22 0x0040 /* RX Message Pending In Mailbox 22 */
#define RMP23 0x0080 /* RX Message Pending In Mailbox 23 */
#define RMP24 0x0100 /* RX Message Pending In Mailbox 24 */
#define RMP25 0x0200 /* RX Message Pending In Mailbox 25 */
#define RMP26 0x0400 /* RX Message Pending In Mailbox 26 */
#define RMP27 0x0800 /* RX Message Pending In Mailbox 27 */
#define RMP28 0x1000 /* RX Message Pending In Mailbox 28 */
#define RMP29 0x2000 /* RX Message Pending In Mailbox 29 */
#define RMP30 0x4000 /* RX Message Pending In Mailbox 30 */
#define RMP31 0x8000 /* RX Message Pending In Mailbox 31 */
/* CAN_RML1 Masks */
#define RML0 0x0001 /* RX Message Lost In Mailbox 0 */
#define RML1 0x0002 /* RX Message Lost In Mailbox 1 */
#define RML2 0x0004 /* RX Message Lost In Mailbox 2 */
#define RML3 0x0008 /* RX Message Lost In Mailbox 3 */
#define RML4 0x0010 /* RX Message Lost In Mailbox 4 */
#define RML5 0x0020 /* RX Message Lost In Mailbox 5 */
#define RML6 0x0040 /* RX Message Lost In Mailbox 6 */
#define RML7 0x0080 /* RX Message Lost In Mailbox 7 */
#define RML8 0x0100 /* RX Message Lost In Mailbox 8 */
#define RML9 0x0200 /* RX Message Lost In Mailbox 9 */
#define RML10 0x0400 /* RX Message Lost In Mailbox 10 */
#define RML11 0x0800 /* RX Message Lost In Mailbox 11 */
#define RML12 0x1000 /* RX Message Lost In Mailbox 12 */
#define RML13 0x2000 /* RX Message Lost In Mailbox 13 */
#define RML14 0x4000 /* RX Message Lost In Mailbox 14 */
#define RML15 0x8000 /* RX Message Lost In Mailbox 15 */
/* CAN_RML2 Masks */
#define RML16 0x0001 /* RX Message Lost In Mailbox 16 */
#define RML17 0x0002 /* RX Message Lost In Mailbox 17 */
#define RML18 0x0004 /* RX Message Lost In Mailbox 18 */
#d
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