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;
109 struct sk_buff *echo_skb[PCAN_USB_MAX_TX_URBS];
111 struct usb_device *udev;
112 struct net_device *netdev;
114 atomic_t active_tx_urbs;
115 struct usb_anchor tx_submitted;
116 struct peak_tx_urb_context tx_contexts[PCAN_USB_MAX_TX_URBS];
119 struct usb_anchor rx_submitted;
129 struct peak_usb_device *prev_siblings;
130 struct peak_usb_device *next_siblings;
133 void pcan_dump_mem(char *prompt, void *p, int l);
135 /* common timestamp management */
136 void peak_usb_init_time_ref(struct peak_time_ref *time_ref,
137 struct peak_usb_adapter *adapter);
138 void peak_usb_update_ts_now(struct peak_time_ref *time_ref, u32 ts_now);
139 void peak_usb_set_ts_now(struct peak_time_ref *time_ref, u32 ts_now);
140 void peak_usb_get_ts_tv(struct peak_time_ref *time_ref, u32 ts,
143 void peak_usb_async_complete(struct urb *urb);
144 void peak_usb_restart_complete(struct peak_usb_device *dev);