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_USBCHIP_PRODUCT_ID 0x0013 31 #define PCAN_USBX6_PRODUCT_ID 0x0014 32 33 #define PCAN_USB_DRIVER_NAME "peak_usb" 34 35 /* number of urbs that are submitted for rx/tx per channel */ 36 #define PCAN_USB_MAX_RX_URBS 4 37 #define PCAN_USB_MAX_TX_URBS 10 38 39 /* usb adapters maximum channels per usb interface */ 40 #define PCAN_USB_MAX_CHANNEL 2 41 42 /* maximum length of the usb commands sent to/received from the devices */ 43 #define PCAN_USB_MAX_CMD_LEN 32 44 45 struct peak_usb_device; 46 47 /* PEAK-System USB adapter descriptor */ 48 struct peak_usb_adapter { 49 char *name; 50 u32 device_id; 51 u32 ctrlmode_supported; 52 struct can_clock clock; 53 const struct can_bittiming_const * const bittiming_const; 54 const struct can_bittiming_const * const data_bittiming_const; 55 unsigned int ctrl_count; 56 57 int (*intf_probe)(struct usb_interface *intf); 58 59 int (*dev_init)(struct peak_usb_device *dev); 60 void (*dev_exit)(struct peak_usb_device *dev); 61 void (*dev_free)(struct peak_usb_device *dev); 62 int (*dev_open)(struct peak_usb_device *dev); 63 int (*dev_close)(struct peak_usb_device *dev); 64 int (*dev_set_bittiming)(struct peak_usb_device *dev, 65 struct can_bittiming *bt); 66 int (*dev_set_data_bittiming)(struct peak_usb_device *dev, 67 struct can_bittiming *bt); 68 int (*dev_set_bus)(struct peak_usb_device *dev, u8 onoff); 69 int (*dev_get_device_id)(struct peak_usb_device *dev, u32 *device_id); 70 int (*dev_decode_buf)(struct peak_usb_device *dev, struct urb *urb); 71 int (*dev_encode_msg)(struct peak_usb_device *dev, struct sk_buff *skb, 72 u8 *obuf, size_t *size); 73 int (*dev_start)(struct peak_usb_device *dev); 74 int (*dev_stop)(struct peak_usb_device *dev); 75 int (*dev_restart_async)(struct peak_usb_device *dev, struct urb *urb, 76 u8 *buf); 77 int (*do_get_berr_counter)(const struct net_device *netdev, 78 struct can_berr_counter *bec); 79 u8 ep_msg_in; 80 u8 ep_msg_out[PCAN_USB_MAX_CHANNEL]; 81 u8 ts_used_bits; 82 u32 ts_period; 83 u8 us_per_ts_shift; 84 u32 us_per_ts_scale; 85 86 int rx_buffer_size; 87 int tx_buffer_size; 88 int sizeof_dev_private; 89 }; 90 91 extern const struct peak_usb_adapter pcan_usb; 92 extern const struct peak_usb_adapter pcan_usb_pro; 93 extern const struct peak_usb_adapter pcan_usb_fd; 94 extern const struct peak_usb_adapter pcan_usb_chip; 95 extern const struct peak_usb_adapter pcan_usb_pro_fd; 96 extern const struct peak_usb_adapter pcan_usb_x6; 97 98 struct peak_time_ref { 99 ktime_t tv_host_0, tv_host; 100 u32 ts_dev_1, ts_dev_2; 101 u64 ts_total; 102 u32 tick_count; 103 const struct peak_usb_adapter *adapter; 104 }; 105 106 struct peak_tx_urb_context { 107 struct peak_usb_device *dev; 108 u32 echo_index; 109 u8 data_len; 110 struct urb *urb; 111 }; 112 113 #define PCAN_USB_STATE_CONNECTED 0x00000001 114 #define PCAN_USB_STATE_STARTED 0x00000002 115 116 /* PEAK-System USB device */ 117 struct peak_usb_device { 118 struct can_priv can; 119 const struct peak_usb_adapter *adapter; 120 unsigned int ctrl_idx; 121 u32 state; 122 123 struct sk_buff *echo_skb[PCAN_USB_MAX_TX_URBS]; 124 125 struct usb_device *udev; 126 struct net_device *netdev; 127 128 atomic_t active_tx_urbs; 129 struct usb_anchor tx_submitted; 130 struct peak_tx_urb_context tx_contexts[PCAN_USB_MAX_TX_URBS]; 131 132 u8 *cmd_buf; 133 struct usb_anchor rx_submitted; 134 135 u32 device_number; 136 u8 device_rev; 137 138 u8 ep_msg_in; 139 u8 ep_msg_out; 140 141 u16 bus_load; 142 143 struct peak_usb_device *prev_siblings; 144 struct peak_usb_device *next_siblings; 145 }; 146 147 void pcan_dump_mem(char *prompt, void *p, int l); 148 149 /* common timestamp management */ 150 void peak_usb_init_time_ref(struct peak_time_ref *time_ref, 151 const struct peak_usb_adapter *adapter); 152 void peak_usb_update_ts_now(struct peak_time_ref *time_ref, u32 ts_now); 153 void peak_usb_set_ts_now(struct peak_time_ref *time_ref, u32 ts_now); 154 void peak_usb_get_ts_time(struct peak_time_ref *time_ref, u32 ts, ktime_t *tv); 155 int peak_usb_netif_rx(struct sk_buff *skb, 156 struct peak_time_ref *time_ref, u32 ts_low); 157 void peak_usb_async_complete(struct urb *urb); 158 void peak_usb_restart_complete(struct peak_usb_device *dev); 159 160 #endif 161