2 * CAN driver for PEAK System USB adapters
3 * Derived from the PCAN project file driver/src/pcan_usb_core.c
5 * Copyright (C) 2003-2010 PEAK System-Technik GmbH
6 * Copyright (C) 2010-2012 Stephane Grosjean <s.grosjean@peak-system.com>
8 * Many thanks to Klaus Hitschler <klaus.hitschler@gmx.de>
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published
12 * by the Free Software Foundation; version 2 of the License.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 #ifndef PCAN_USB_CORE_H
20 #define PCAN_USB_CORE_H
22 /* PEAK-System vendor id. */
23 #define PCAN_USB_VENDOR_ID 0x0c72
25 /* supported device ids. */
26 #define PCAN_USB_PRODUCT_ID 0x000c
27 #define PCAN_USBPRO_PRODUCT_ID 0x000d
29 #define PCAN_USB_DRIVER_NAME "peak_usb"
31 /* number of urbs that are submitted for rx/tx per channel */
32 #define PCAN_USB_MAX_RX_URBS 4
33 #define PCAN_USB_MAX_TX_URBS 10
35 /* usb adapters maximum channels per usb interface */
36 #define PCAN_USB_MAX_CHANNEL 2
38 /* maximum length of the usb commands sent to/received from the devices */
39 #define PCAN_USB_MAX_CMD_LEN 32
41 struct peak_usb_device
;
43 /* PEAK-System USB adapter descriptor */
44 struct peak_usb_adapter
{
47 struct can_clock clock
;
48 const struct can_bittiming_const bittiming_const
;
49 unsigned int ctrl_count
;
51 int (*intf_probe
)(struct usb_interface
*intf
);
53 int (*dev_init
)(struct peak_usb_device
*dev
);
54 void (*dev_exit
)(struct peak_usb_device
*dev
);
55 void (*dev_free
)(struct peak_usb_device
*dev
);
56 int (*dev_open
)(struct peak_usb_device
*dev
);
57 int (*dev_close
)(struct peak_usb_device
*dev
);
58 int (*dev_set_bittiming
)(struct peak_usb_device
*dev
,
59 struct can_bittiming
*bt
);
60 int (*dev_set_bus
)(struct peak_usb_device
*dev
, u8 onoff
);
61 int (*dev_get_device_id
)(struct peak_usb_device
*dev
, u32
*device_id
);
62 int (*dev_decode_buf
)(struct peak_usb_device
*dev
, struct urb
*urb
);
63 int (*dev_encode_msg
)(struct peak_usb_device
*dev
, struct sk_buff
*skb
,
64 u8
*obuf
, size_t *size
);
65 int (*dev_start
)(struct peak_usb_device
*dev
);
66 int (*dev_stop
)(struct peak_usb_device
*dev
);
67 int (*dev_restart_async
)(struct peak_usb_device
*dev
, struct urb
*urb
,
70 u8 ep_msg_out
[PCAN_USB_MAX_CHANNEL
];
78 int sizeof_dev_private
;
81 extern struct peak_usb_adapter pcan_usb
;
82 extern struct peak_usb_adapter pcan_usb_pro
;
84 struct peak_time_ref
{
85 struct timeval tv_host_0
, tv_host
;
86 u32 ts_dev_1
, ts_dev_2
;
89 struct peak_usb_adapter
*adapter
;
92 struct peak_tx_urb_context
{
93 struct peak_usb_device
*dev
;
99 #define PCAN_USB_STATE_CONNECTED 0x00000001
100 #define PCAN_USB_STATE_STARTED 0x00000002
102 /* PEAK-System USB device */
103 struct peak_usb_device
{
105 struct peak_usb_adapter
*adapter
;
106 unsigned int ctrl_idx
;
110 struct sk_buff
*echo_skb
[PCAN_USB_MAX_TX_URBS
];
112 struct usb_device
*udev
;
113 struct net_device
*netdev
;
115 atomic_t active_tx_urbs
;
116 struct usb_anchor tx_submitted
;
117 struct peak_tx_urb_context tx_contexts
[PCAN_USB_MAX_TX_URBS
];
120 struct usb_anchor rx_submitted
;
130 struct peak_usb_device
*prev_siblings
;
131 struct peak_usb_device
*next_siblings
;
134 void pcan_dump_mem(char *prompt
, void *p
, int l
);
136 /* common timestamp management */
137 void peak_usb_init_time_ref(struct peak_time_ref
*time_ref
,
138 struct peak_usb_adapter
*adapter
);
139 void peak_usb_update_ts_now(struct peak_time_ref
*time_ref
, u32 ts_now
);
140 void peak_usb_set_ts_now(struct peak_time_ref
*time_ref
, u32 ts_now
);
141 void peak_usb_get_ts_tv(struct peak_time_ref
*time_ref
, u32 ts
,
144 void peak_usb_async_complete(struct urb
*urb
);
145 void peak_usb_restart_complete(struct peak_usb_device
*dev
);