1 /* 2 * CAN driver for PEAK System USB adapters 3 * Derived from the PCAN project file driver/src/pcan_usb_core.c 4 * 5 * Copyright (C) 2003-2010 PEAK System-Technik GmbH 6 * Copyright (C) 2010-2012 Stephane Grosjean <s.grosjean@peak-system.com> 7 * 8 * Many thanks to Klaus Hitschler <klaus.hitschler@gmx.de> 9 * 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. 13 * 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. 18 */ 19 #ifndef PCAN_USB_CORE_H 20 #define PCAN_USB_CORE_H 21 22 /* PEAK-System vendor id. */ 23 #define PCAN_USB_VENDOR_ID 0x0c72 24 25 /* supported device ids. */ 26 #define PCAN_USB_PRODUCT_ID 0x000c 27 #define PCAN_USBPRO_PRODUCT_ID 0x000d 28 #define PCAN_USBPROFD_PRODUCT_ID 0x0011 29 #define PCAN_USBFD_PRODUCT_ID 0x0012 30 31 #define PCAN_USB_DRIVER_NAME "peak_usb" 32 33 /* number of urbs that are submitted for rx/tx per channel */ 34 #define PCAN_USB_MAX_RX_URBS 4 35 #define PCAN_USB_MAX_TX_URBS 10 36 37 /* usb adapters maximum channels per usb interface */ 38 #define PCAN_USB_MAX_CHANNEL 2 39 40 /* maximum length of the usb commands sent to/received from the devices */ 41 #define PCAN_USB_MAX_CMD_LEN 32 42 43 struct peak_usb_device; 44 45 /* PEAK-System USB adapter descriptor */ 46 struct peak_usb_adapter { 47 char *name; 48 u32 device_id; 49 u32 ctrlmode_supported; 50 struct can_clock clock; 51 const struct can_bittiming_const * const bittiming_const; 52 const struct can_bittiming_const * const data_bittiming_const; 53 unsigned int ctrl_count; 54 55 int (*intf_probe)(struct usb_interface *intf); 56 57 int (*dev_init)(struct peak_usb_device *dev); 58 void (*dev_exit)(struct peak_usb_device *dev); 59 void (*dev_free)(struct peak_usb_device *dev); 60 int (*dev_open)(struct peak_usb_device *dev); 61 int (*dev_close)(struct peak_usb_device *dev); 62 int (*dev_set_bittiming)(struct peak_usb_device *dev, 63 struct can_bittiming *bt); 64 int (*dev_set_data_bittiming)(struct peak_usb_device *dev, 65 struct can_bittiming *bt); 66 int (*dev_set_bus)(struct peak_usb_device *dev, u8 onoff); 67 int (*dev_get_device_id)(struct peak_usb_device *dev, u32 *device_id); 68 int (*dev_decode_buf)(struct peak_usb_device *dev, struct urb *urb); 69 int (*dev_encode_msg)(struct peak_usb_device *dev, struct sk_buff *skb, 70 u8 *obuf, size_t *size); 71 int (*dev_start)(struct peak_usb_device *dev); 72 int (*dev_stop)(struct peak_usb_device *dev); 73 int (*dev_restart_async)(struct peak_usb_device *dev, struct urb *urb, 74 u8 *buf); 75 int (*do_get_berr_counter)(const struct net_device *netdev, 76 struct can_berr_counter *bec); 77 u8 ep_msg_in; 78 u8 ep_msg_out[PCAN_USB_MAX_CHANNEL]; 79 u8 ts_used_bits; 80 u32 ts_period; 81 u8 us_per_ts_shift; 82 u32 us_per_ts_scale; 83 84 int rx_buffer_size; 85 int tx_buffer_size; 86 int sizeof_dev_private; 87 }; 88 89 extern const struct peak_usb_adapter pcan_usb; 90 extern const struct peak_usb_adapter pcan_usb_pro; 91 extern const struct peak_usb_adapter pcan_usb_fd; 92 extern const struct peak_usb_adapter pcan_usb_pro_fd; 93 94 struct peak_time_ref { 95 struct timeval tv_host_0, tv_host; 96 u32 ts_dev_1, ts_dev_2; 97 u64 ts_total; 98 u32 tick_count; 99 const struct peak_usb_adapter *adapter; 100 }; 101 102 struct peak_tx_urb_context { 103 struct peak_usb_device *dev; 104 u32 echo_index; 105 u8 data_len; 106 struct urb *urb; 107 }; 108 109 #define PCAN_USB_STATE_CONNECTED 0x00000001 110 #define PCAN_USB_STATE_STARTED 0x00000002 111 112 /* PEAK-System USB device */ 113 struct peak_usb_device { 114 struct can_priv can; 115 const struct peak_usb_adapter *adapter; 116 unsigned int ctrl_idx; 117 u32 state; 118 119 struct sk_buff *echo_skb[PCAN_USB_MAX_TX_URBS]; 120 121 struct usb_device *udev; 122 struct net_device *netdev; 123 124 atomic_t active_tx_urbs; 125 struct usb_anchor tx_submitted; 126 struct peak_tx_urb_context tx_contexts[PCAN_USB_MAX_TX_URBS]; 127 128 u8 *cmd_buf; 129 struct usb_anchor rx_submitted; 130 131 u32 device_number; 132 u8 device_rev; 133 134 u8 ep_msg_in; 135 u8 ep_msg_out; 136 137 u16 bus_load; 138 139 struct peak_usb_device *prev_siblings; 140 struct peak_usb_device *next_siblings; 141 }; 142 143 void pcan_dump_mem(char *prompt, void *p, int l); 144 145 /* common timestamp management */ 146 void peak_usb_init_time_ref(struct peak_time_ref *time_ref, 147 const struct peak_usb_adapter *adapter); 148 void peak_usb_update_ts_now(struct peak_time_ref *time_ref, u32 ts_now); 149 void peak_usb_set_ts_now(struct peak_time_ref *time_ref, u32 ts_now); 150 void peak_usb_get_ts_tv(struct peak_time_ref *time_ref, u32 ts, 151 struct timeval *tv); 152 int peak_usb_netif_rx(struct sk_buff *skb, 153 struct peak_time_ref *time_ref, u32 ts_low, u32 ts_high); 154 void peak_usb_async_complete(struct urb *urb); 155 void peak_usb_restart_complete(struct peak_usb_device *dev); 156 157 #endif 158