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 #define PCAN_USBX6_PRODUCT_ID 0x0014 31 32 #define PCAN_USB_DRIVER_NAME "peak_usb" 33 34 /* number of urbs that are submitted for rx/tx per channel */ 35 #define PCAN_USB_MAX_RX_URBS 4 36 #define PCAN_USB_MAX_TX_URBS 10 37 38 /* usb adapters maximum channels per usb interface */ 39 #define PCAN_USB_MAX_CHANNEL 2 40 41 /* maximum length of the usb commands sent to/received from the devices */ 42 #define PCAN_USB_MAX_CMD_LEN 32 43 44 struct peak_usb_device; 45 46 /* PEAK-System USB adapter descriptor */ 47 struct peak_usb_adapter { 48 char *name; 49 u32 device_id; 50 u32 ctrlmode_supported; 51 struct can_clock clock; 52 const struct can_bittiming_const * const bittiming_const; 53 const struct can_bittiming_const * const data_bittiming_const; 54 unsigned int ctrl_count; 55 56 int (*intf_probe)(struct usb_interface *intf); 57 58 int (*dev_init)(struct peak_usb_device *dev); 59 void (*dev_exit)(struct peak_usb_device *dev); 60 void (*dev_free)(struct peak_usb_device *dev); 61 int (*dev_open)(struct peak_usb_device *dev); 62 int (*dev_close)(struct peak_usb_device *dev); 63 int (*dev_set_bittiming)(struct peak_usb_device *dev, 64 struct can_bittiming *bt); 65 int (*dev_set_data_bittiming)(struct peak_usb_device *dev, 66 struct can_bittiming *bt); 67 int (*dev_set_bus)(struct peak_usb_device *dev, u8 onoff); 68 int (*dev_get_device_id)(struct peak_usb_device *dev, u32 *device_id); 69 int (*dev_decode_buf)(struct peak_usb_device *dev, struct urb *urb); 70 int (*dev_encode_msg)(struct peak_usb_device *dev, struct sk_buff *skb, 71 u8 *obuf, size_t *size); 72 int (*dev_start)(struct peak_usb_device *dev); 73 int (*dev_stop)(struct peak_usb_device *dev); 74 int (*dev_restart_async)(struct peak_usb_device *dev, struct urb *urb, 75 u8 *buf); 76 int (*do_get_berr_counter)(const struct net_device *netdev, 77 struct can_berr_counter *bec); 78 u8 ep_msg_in; 79 u8 ep_msg_out[PCAN_USB_MAX_CHANNEL]; 80 u8 ts_used_bits; 81 u32 ts_period; 82 u8 us_per_ts_shift; 83 u32 us_per_ts_scale; 84 85 int rx_buffer_size; 86 int tx_buffer_size; 87 int sizeof_dev_private; 88 }; 89 90 extern const struct peak_usb_adapter pcan_usb; 91 extern const struct peak_usb_adapter pcan_usb_pro; 92 extern const struct peak_usb_adapter pcan_usb_fd; 93 extern const struct peak_usb_adapter pcan_usb_pro_fd; 94 extern const struct peak_usb_adapter pcan_usb_x6; 95 96 struct peak_time_ref { 97 struct timeval tv_host_0, tv_host; 98 u32 ts_dev_1, ts_dev_2; 99 u64 ts_total; 100 u32 tick_count; 101 const struct peak_usb_adapter *adapter; 102 }; 103 104 struct peak_tx_urb_context { 105 struct peak_usb_device *dev; 106 u32 echo_index; 107 u8 data_len; 108 struct urb *urb; 109 }; 110 111 #define PCAN_USB_STATE_CONNECTED 0x00000001 112 #define PCAN_USB_STATE_STARTED 0x00000002 113 114 /* PEAK-System USB device */ 115 struct peak_usb_device { 116 struct can_priv can; 117 const struct peak_usb_adapter *adapter; 118 unsigned int ctrl_idx; 119 u32 state; 120 121 struct sk_buff *echo_skb[PCAN_USB_MAX_TX_URBS]; 122 123 struct usb_device *udev; 124 struct net_device *netdev; 125 126 atomic_t active_tx_urbs; 127 struct usb_anchor tx_submitted; 128 struct peak_tx_urb_context tx_contexts[PCAN_USB_MAX_TX_URBS]; 129 130 u8 *cmd_buf; 131 struct usb_anchor rx_submitted; 132 133 u32 device_number; 134 u8 device_rev; 135 136 u8 ep_msg_in; 137 u8 ep_msg_out; 138 139 u16 bus_load; 140 141 struct peak_usb_device *prev_siblings; 142 struct peak_usb_device *next_siblings; 143 }; 144 145 void pcan_dump_mem(char *prompt, void *p, int l); 146 147 /* common timestamp management */ 148 void peak_usb_init_time_ref(struct peak_time_ref *time_ref, 149 const struct peak_usb_adapter *adapter); 150 void peak_usb_update_ts_now(struct peak_time_ref *time_ref, u32 ts_now); 151 void peak_usb_set_ts_now(struct peak_time_ref *time_ref, u32 ts_now); 152 void peak_usb_get_ts_tv(struct peak_time_ref *time_ref, u32 ts, 153 struct timeval *tv); 154 int peak_usb_netif_rx(struct sk_buff *skb, 155 struct peak_time_ref *time_ref, u32 ts_low, u32 ts_high); 156 void peak_usb_async_complete(struct urb *urb); 157 void peak_usb_restart_complete(struct peak_usb_device *dev); 158 159 #endif 160