1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*
* drivers/can/c_can.h
*
* Copyright (C) 2007
*
* - Sascha Hauer, Marc Kleine-Budde, Pengutronix
* - Simon Kallweit, intefo AG
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the version 2 of the GNU General Public License
* as published by the Free Software Foundation
*
* 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 __CCAN_H__
#define __CCAN_H__
#include <linux/can.h>
#include <linux/platform_device.h>
#undef CCAN_DEBUG
enum c_regs {
CAN_CONTROL = 0x00,
CAN_STATUS = 0x02,
CAN_ERROR = 0x04,
CAN_BTR = 0x06,
CAN_IR = 0x08,
CAN_TEST = 0x0a,
CAN_BRP_EXT = 0x0c,
CAN_IF1 = 0x10,
CAN_IF2 = 0x40,
CAN_TXRQST = 0x80, /* 32bit */
CAN_NEWDAT = 0x90, /* 32bit */
CAN_INTPND = 0xa0, /* 32bit */
CAN_MSGVAL = 0xb0, /* 32bit */
};
#define CAN_IF_COMR(x) (CAN_IF1 + (x) * 0x30 + 0x00)
#define CAN_IF_COMM(x) (CAN_IF1 + (x) * 0x30 + 0x02)
#define CAN_IF_MASK(x) (CAN_IF1 + (x) * 0x30 + 0x04) /* 32bit */
#define CAN_IF_ARB(x) (CAN_IF1 + (x) * 0x30 + 0x08) /* 32bit */
#define CAN_IF_MCONT(x) (CAN_IF1 + (x) * 0x30 + 0x0c)
#define CAN_IF_DATAA(x) (CAN_IF1 + (x) * 0x30 + 0x0e) /* 32bit */
#define CAN_IF_DATAB(x) (CAN_IF1 + (x) * 0x30 + 0x12) /* 32bit */
#define CONTROL_TEST (1<<7)
#define CONTROL_CCE (1<<6)
#define CONTROL_DAR (1<<5)
#define CONTROL_EIE (1<<3)
#define CONTROL_SIE (1<<2)
#define CONTROL_IE (1<<1)
#define CONTROL_INIT (1<<0)
#define TEST_RX (1<<7)
#define TEST_TX1 (1<<6)
#define TEST_TX2 (1<<5)
#define TEST_LBACK (1<<4)
#define TEST_SILENT (1<<3)
#define TEST_BASIC (1<<2)
#define STATUS_BOFF (1<<7)
#define STATUS_EWARN (1<<6)
#define STATUS_EPASS (1<<5)
#define STATUS_RXOK (1<<4)
#define STATUS_TXOK (1<<3)
#define STATUS_LEC_MASK (1<<2)
#define LEC_STUFF_ERROR 1
#define LEC_FORM_ERROR 2
#define LEC_ACK_ERROR 3
#define LEC_BIT1_ERROR 4
#define BTR_BRP_MASK 0x3f
#define BTR_BRP_SHIFT 0
#define BTR_SJW_SHIFT 6
#define BTR_SJW_MASK (0x3 << BTR_SJW_SHIFT)
#define BTR_TSEG1_SHIFT 8
#define BTR_TSEG1_MASK (0xf << BTR_TSEG1_SHIFT)
#define BTR_TSEG2_SHIFT 12
#define BTR_TSEG2_MASK (0x7 << BTR_TSEG2_SHIFT)
#define IF_COMR_BUSY (1<<15)
#define IF_COMM_WR (1<<7)
#define IF_COMM_MASK (1<<6)
#define IF_COMM_ARB (1<<5)
#define IF_COMM_CONTROL (1<<4)
#define IF_COMM_CLR_INT_PND (1<<3)
#define IF_COMM_TXRQST (1<<2)
#define IF_COMM_DATAA (1<<1)
#define IF_COMM_DATAB (1<<0)
#define IF_COMM_ALL (IF_COMM_MASK | IF_COMM_ARB | IF_COMM_CONTROL | \
IF_COMM_TXRQST | IF_COMM_DATAA | IF_COMM_DATAB)
#define IF_ARB_MSGVAL (1<<31)
#define IF_ARB_MSGXTD (1<<30)
#define IF_ARB_TRANSMIT (1<<29)
#define IF_MCONT_NEWDAT (1<<15)
#define IF_MCONT_MSGLST (1<<14)
#define IF_MCONT_INTPND (1<<13)
#define IF_MCONT_UMASK (1<<12)
#define IF_MCONT_TXIE (1<<11)
#define IF_MCONT_RXIE (1<<10)
#define IF_MCONT_RMTEN (1<<9)
#define IF_MCONT_TXRQST (1<<8)
#define IF_MCONT_EOB (1<<7)
#define MAX_OBJECT 31
#define MAX_TRANSMIT_OBJECT 15
#define RECEIVE_OBJECT_BITS 0xffff0000
struct ccan_priv {
struct can_priv can;
struct net_device *dev;
int tx_object;
int last_status;
struct delayed_work work;
u16 (*read_reg)(struct net_device *dev, enum c_regs reg);
void (*write_reg)(struct net_device *dev, enum c_regs reg, u16 val);
#ifdef CCAN_DEBUG
unsigned int bufstat[MAX_OBJECT + 1];
#endif
};
extern struct net_device *alloc_ccandev(int sizeof_priv);
extern void free_ccandev(struct net_device *dev);
extern int register_ccandev(struct net_device *dev);
extern void unregister_ccandev(struct net_device *dev);
#endif /* __CCAN_H__ */
|
