mirror of https://gitee.com/openkylin/linux.git
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
/*
|
|
* CAN bus driver for Bosch C_CAN controller
|
|
*
|
|
* Copyright (C) 2010 ST Microelectronics
|
|
* Bhupesh Sharma <bhupesh.sharma@st.com>
|
|
*
|
|
* Borrowed heavily from the C_CAN driver originally written by:
|
|
* Copyright (C) 2007
|
|
* - Sascha Hauer, Marc Kleine-Budde, Pengutronix <s.hauer@pengutronix.de>
|
|
* - Simon Kallweit, intefo AG <simon.kallweit@intefo.ch>
|
|
*
|
|
* Bosch C_CAN controller is compliant to CAN protocol version 2.0 part A and B.
|
|
* Bosch C_CAN user manual can be obtained from:
|
|
* http://www.semiconductors.bosch.de/media/en/pdf/ipmodules_1/c_can/
|
|
* users_manual_c_can.pdf
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#ifndef C_CAN_H
|
|
#define C_CAN_H
|
|
|
|
/* c_can IF registers */
|
|
struct c_can_if_regs {
|
|
u16 com_req;
|
|
u16 com_mask;
|
|
u16 mask1;
|
|
u16 mask2;
|
|
u16 arb1;
|
|
u16 arb2;
|
|
u16 msg_cntrl;
|
|
u16 data[4];
|
|
u16 _reserved[13];
|
|
};
|
|
|
|
/* c_can hardware registers */
|
|
struct c_can_regs {
|
|
u16 control;
|
|
u16 status;
|
|
u16 err_cnt;
|
|
u16 btr;
|
|
u16 interrupt;
|
|
u16 test;
|
|
u16 brp_ext;
|
|
u16 _reserved1;
|
|
struct c_can_if_regs ifregs[2]; /* [0] = IF1 and [1] = IF2 */
|
|
u16 _reserved2[8];
|
|
u16 txrqst1;
|
|
u16 txrqst2;
|
|
u16 _reserved3[6];
|
|
u16 newdat1;
|
|
u16 newdat2;
|
|
u16 _reserved4[6];
|
|
u16 intpnd1;
|
|
u16 intpnd2;
|
|
u16 _reserved5[6];
|
|
u16 msgval1;
|
|
u16 msgval2;
|
|
u16 _reserved6[6];
|
|
};
|
|
|
|
/* c_can private data structure */
|
|
struct c_can_priv {
|
|
struct can_priv can; /* must be the first member */
|
|
struct napi_struct napi;
|
|
struct net_device *dev;
|
|
int tx_object;
|
|
int current_status;
|
|
int last_status;
|
|
u16 (*read_reg) (struct c_can_priv *priv, void *reg);
|
|
void (*write_reg) (struct c_can_priv *priv, void *reg, u16 val);
|
|
struct c_can_regs __iomem *regs;
|
|
unsigned long irq_flags; /* for request_irq() */
|
|
unsigned int tx_next;
|
|
unsigned int tx_echo;
|
|
void *priv; /* for board-specific data */
|
|
};
|
|
|
|
struct net_device *alloc_c_can_dev(void);
|
|
void free_c_can_dev(struct net_device *dev);
|
|
int register_c_can_dev(struct net_device *dev);
|
|
void unregister_c_can_dev(struct net_device *dev);
|
|
|
|
#endif /* C_CAN_H */
|