diff options
Diffstat (limited to 'drivers/net/can/old/mscan/mscan.h')
| -rw-r--r-- | drivers/net/can/old/mscan/mscan.h | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/drivers/net/can/old/mscan/mscan.h b/drivers/net/can/old/mscan/mscan.h new file mode 100644 index 000000000000..807ec3fae437 --- /dev/null +++ b/drivers/net/can/old/mscan/mscan.h @@ -0,0 +1,247 @@ +/* + * DESCRIPTION: + * Definitions of consts/structs to drive the Freescale MSCAN. + * + * AUTHOR: + * Andrey Volkov <avolkov@varma-el.com> + * + * COPYRIGHT: + * 2004-2006, Varma Electronics Oy + * + * LICENCE: + * 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 __MSCAN_H__ +#define __MSCAN_H__ + +#include <linux/autoconf.h> +#include <asm/types.h> + +/* MSCAN control register 0 (CANCTL0) bits */ +#define MSCAN_RXFRM 0x80 +#define MSCAN_RXACT 0x40 +#define MSCAN_CSWAI 0x20 +#define MSCAN_SYNCH 0x10 +#define MSCAN_TIME 0x08 +#define MSCAN_WUPE 0x04 +#define MSCAN_SLPRQ 0x02 +#define MSCAN_INITRQ 0x01 + +/* MSCAN control register 1 (CANCTL1) bits */ +#define MSCAN_CANE 0x80 +#define MSCAN_CLKSRC 0x40 +#define MSCAN_LOOPB 0x20 +#define MSCAN_LISTEN 0x10 +#define MSCAN_WUPM 0x04 +#define MSCAN_SLPAK 0x02 +#define MSCAN_INITAK 0x01 + +#ifdef CONFIG_PPC_MPC52xx +#define MSCAN_CLKSRC_BUS 0 +#define MSCAN_CLKSRC_XTAL MSCAN_CLKSRC +#else +#define MSCAN_CLKSRC_BUS MSCAN_CLKSRC +#define MSCAN_CLKSRC_XTAL 0 +#endif + +/* MSCAN receiver flag register (CANRFLG) bits */ +#define MSCAN_WUPIF 0x80 +#define MSCAN_CSCIF 0x40 +#define MSCAN_RSTAT1 0x20 +#define MSCAN_RSTAT0 0x10 +#define MSCAN_TSTAT1 0x08 +#define MSCAN_TSTAT0 0x04 +#define MSCAN_OVRIF 0x02 +#define MSCAN_RXF 0x01 +#define MSCAN_ERR_IF (MSCAN_OVRIF | MSCAN_CSCIF) +#define MSCAN_RSTAT_MSK (MSCAN_RSTAT1 | MSCAN_RSTAT0) +#define MSCAN_TSTAT_MSK (MSCAN_TSTAT1 | MSCAN_TSTAT0) +#define MSCAN_STAT_MSK (MSCAN_RSTAT_MSK | MSCAN_TSTAT_MSK) + +#define MSCAN_STATE_BUS_OFF (MSCAN_RSTAT1 | MSCAN_RSTAT0 | \ + MSCAN_TSTAT1 | MSCAN_TSTAT0) +#define MSCAN_STATE_TX(canrflg) (((canrflg)&MSCAN_TSTAT_MSK)>>2) +#define MSCAN_STATE_RX(canrflg) (((canrflg)&MSCAN_RSTAT_MSK)>>4) +#define MSCAN_STATE_ACTIVE 0 +#define MSCAN_STATE_WARNING 1 +#define MSCAN_STATE_PASSIVE 2 +#define MSCAN_STATE_BUSOFF 3 + +/* MSCAN receiver interrupt enable register (CANRIER) bits */ +#define MSCAN_WUPIE 0x80 +#define MSCAN_CSCIE 0x40 +#define MSCAN_RSTATE1 0x20 +#define MSCAN_RSTATE0 0x10 +#define MSCAN_TSTATE1 0x08 +#define MSCAN_TSTATE0 0x04 +#define MSCAN_OVRIE 0x02 +#define MSCAN_RXFIE 0x01 + +/* MSCAN transmitter flag register (CANTFLG) bits */ +#define MSCAN_TXE2 0x04 +#define MSCAN_TXE1 0x02 +#define MSCAN_TXE0 0x01 +#define MSCAN_TXE (MSCAN_TXE2 | MSCAN_TXE1 | MSCAN_TXE0) + +/* MSCAN transmitter interrupt enable register (CANTIER) bits */ +#define MSCAN_TXIE2 0x04 +#define MSCAN_TXIE1 0x02 +#define MSCAN_TXIE0 0x01 +#define MSCAN_TXIE (MSCAN_TXIE2 | MSCAN_TXIE1 | MSCAN_TXIE0) + +/* MSCAN transmitter message abort request (CANTARQ) bits */ +#define MSCAN_ABTRQ2 0x04 +#define MSCAN_ABTRQ1 0x02 +#define MSCAN_ABTRQ0 0x01 + +/* MSCAN transmitter message abort ack (CANTAAK) bits */ +#define MSCAN_ABTAK2 0x04 +#define MSCAN_ABTAK1 0x02 +#define MSCAN_ABTAK0 0x01 + +/* MSCAN transmit buffer selection (CANTBSEL) bits */ +#define MSCAN_TX2 0x04 +#define MSCAN_TX1 0x02 +#define MSCAN_TX0 0x01 + +/* MSCAN ID acceptance control register (CANIDAC) bits */ +#define MSCAN_IDAM1 0x20 +#define MSCAN_IDAM0 0x10 +#define MSCAN_IDHIT2 0x04 +#define MSCAN_IDHIT1 0x02 +#define MSCAN_IDHIT0 0x01 + +#define MSCAN_AF_32BIT 0x00 +#define MSCAN_AF_16BIT MSCAN_IDAM0 +#define MSCAN_AF_8BIT MSCAN_IDAM1 +#define MSCAN_AF_CLOSED (MSCAN_IDAM0|MSCAN_IDAM1) +#define MSCAN_AF_MASK (~(MSCAN_IDAM0|MSCAN_IDAM1)) + +/* MSCAN Miscellaneous Register (CANMISC) bits */ +#define MSCAN_BOHOLD 0x01 + +#ifdef CONFIG_PPC_MPC52xx +#define _MSCAN_RESERVED_(n,num) u8 _res##n[num] +#define _MSCAN_RESERVED_DSR_SIZE 2 +#else +#define _MSCAN_RESERVED_(n,num) +#define _MSCAN_RESERVED_DSR_SIZE 0 +#endif + +/* Structure of the hardware registers */ +struct mscan_regs { + /* (see doco S12MSCANV3/D) MPC5200 MSCAN */ + u8 canctl0; /* + 0x00 0x00 */ + u8 canctl1; /* + 0x01 0x01 */ + _MSCAN_RESERVED_(1, 2); /* + 0x02 */ + u8 canbtr0; /* + 0x04 0x02 */ + u8 canbtr1; /* + 0x05 0x03 */ + _MSCAN_RESERVED_(2, 2); /* + 0x06 */ + u8 canrflg; /* + 0x08 0x04 */ + u8 canrier; /* + 0x09 0x05 */ + _MSCAN_RESERVED_(3, 2); /* + 0x0a */ + u8 cantflg; /* + 0x0c 0x06 */ + u8 cantier; /* + 0x0d 0x07 */ + _MSCAN_RESERVED_(4, 2); /* + 0x0e */ + u8 cantarq; /* + 0x10 0x08 */ + u8 cantaak; /* + 0x11 0x09 */ + _MSCAN_RESERVED_(5, 2); /* + 0x12 */ + u8 cantbsel; /* + 0x14 0x0a */ + u8 canidac; /* + 0x15 0x0b */ + u8 reserved; /* + 0x16 0x0c */ + _MSCAN_RESERVED_(6, 5); /* + 0x17 */ +#ifndef CONFIG_PPC_MPC52xx + u8 canmisc; /* 0x0d */ +#endif + u8 canrxerr; /* + 0x1c 0x0e */ + u8 cantxerr; /* + 0x1d 0x0f */ + _MSCAN_RESERVED_(7, 2); /* + 0x1e */ + u16 canidar1_0; /* + 0x20 0x10 */ + _MSCAN_RESERVED_(8, 2); /* + 0x22 */ + u16 canidar3_2; /* + 0x24 0x12 */ + _MSCAN_RESERVED_(9, 2); /* + 0x26 */ + u16 canidmr1_0; /* + 0x28 0x14 */ + _MSCAN_RESERVED_(10, 2); /* + 0x2a */ + u16 canidmr3_2; /* + 0x2c 0x16 */ + _MSCAN_RESERVED_(11, 2); /* + 0x2e */ + u16 canidar5_4; /* + 0x30 0x18 */ + _MSCAN_RESERVED_(12, 2); /* + 0x32 */ + u16 canidar7_6; /* + 0x34 0x1a */ + _MSCAN_RESERVED_(13, 2); /* + 0x36 */ + u16 canidmr5_4; /* + 0x38 0x1c */ + _MSCAN_RESERVED_(14, 2); /* + 0x3a */ + u16 canidmr7_6; /* + 0x3c 0x1e */ + _MSCAN_RESERVED_(15, 2); /* + 0x3e */ + struct { + u16 idr1_0; /* + 0x40 0x20 */ + _MSCAN_RESERVED_(16, 2); /* + 0x42 */ + u16 idr3_2; /* + 0x44 0x22 */ + _MSCAN_RESERVED_(17, 2); /* + 0x46 */ + u16 dsr1_0; /* + 0x48 0x24 */ + _MSCAN_RESERVED_(18, 2); /* + 0x4a */ + u16 dsr3_2; /* + 0x4c 0x26 */ + _MSCAN_RESERVED_(19, 2); /* + 0x4e */ + u16 dsr5_4; /* + 0x50 0x28 */ + _MSCAN_RESERVED_(20, 2); /* + 0x52 */ + u16 dsr7_6; /* + 0x54 0x2a */ + _MSCAN_RESERVED_(21, 2); /* + 0x56 */ + u8 dlr; /* + 0x58 0x2c */ + u8:8; /* + 0x59 0x2d */ + _MSCAN_RESERVED_(22, 2); /* + 0x5a */ + u16 time; /* + 0x5c 0x2e */ + } rx; + _MSCAN_RESERVED_(23, 2); /* + 0x5e */ + struct { + u16 idr1_0; /* + 0x60 0x30 */ + _MSCAN_RESERVED_(24, 2); /* + 0x62 */ + u16 idr3_2; /* + 0x64 0x32 */ + _MSCAN_RESERVED_(25, 2); /* + 0x66 */ + u16 dsr1_0; /* + 0x68 0x34 */ + _MSCAN_RESERVED_(26, 2); /* + 0x6a */ + u16 dsr3_2; /* + 0x6c 0x36 */ + _MSCAN_RESERVED_(27, 2); /* + 0x6e */ + u16 dsr5_4; /* + 0x70 0x38 */ + _MSCAN_RESERVED_(28, 2); /* + 0x72 */ + u16 dsr7_6; /* + 0x74 0x3a */ + _MSCAN_RESERVED_(29, 2); /* + 0x76 */ + u8 dlr; /* + 0x78 0x3c */ + u8 tbpr; /* + 0x79 0x3d */ + _MSCAN_RESERVED_(30, 2); /* + 0x7a */ + u16 time; /* + 0x7c 0x3e */ + } tx; + _MSCAN_RESERVED_(31, 2); /* + 0x7e */ +} __attribute__ ((packed)); + +#undef _MSCAN_RESERVED_ +#define MSCAN_REGION sizeof(struct mscan) + +#define MSCAN_WATCHDOG_TIMEOUT ((500*HZ)/1000) + +struct mscan_platform_data { + u8 clock_src; /* MSCAN_CLKSRC_BUS or MSCAN_CLKSRC_XTAL */ + u32 clock_frq; /* can ref. clock, in Hz */ +}; + +struct net_device *alloc_mscandev(void); +/* @clock_src: + 1 = The MSCAN clock source is the onchip Bus Clock. + 0 = The MSCAN clock source is the chip Oscillator Clock. +*/ +extern int register_mscandev(struct net_device *dev, int clock_src); +extern void unregister_mscandev(struct net_device *dev); + +#endif /* __MSCAN_H__ */ |