/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* CAN driver for PEAK System USB adapters
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* Derived from the PCAN project file driver/src/pcan_usb_core.c
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*
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* Copyright (C) 2003-2010 PEAK System-Technik GmbH
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* Copyright (C) 2010-2012 Stephane Grosjean <s.grosjean@peak-system.com>
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*
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* Many thanks to Klaus Hitschler <klaus.hitschler@gmx.de>
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*/
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#ifndef PCAN_USB_CORE_H
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#define PCAN_USB_CORE_H
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/* PEAK-System vendor id. */
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#define PCAN_USB_VENDOR_ID 0x0c72
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/* supported device ids. */
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#define PCAN_USB_PRODUCT_ID 0x000c
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#define PCAN_USBPRO_PRODUCT_ID 0x000d
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#define PCAN_USBPROFD_PRODUCT_ID 0x0011
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#define PCAN_USBFD_PRODUCT_ID 0x0012
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#define PCAN_USBCHIP_PRODUCT_ID 0x0013
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#define PCAN_USBX6_PRODUCT_ID 0x0014
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#define PCAN_USB_DRIVER_NAME "peak_usb"
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/* number of urbs that are submitted for rx/tx per channel */
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#define PCAN_USB_MAX_RX_URBS 4
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#define PCAN_USB_MAX_TX_URBS 10
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/* usb adapters maximum channels per usb interface */
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#define PCAN_USB_MAX_CHANNEL 2
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/* maximum length of the usb commands sent to/received from the devices */
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#define PCAN_USB_MAX_CMD_LEN 32
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struct peak_usb_device;
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/* PEAK-System USB adapter descriptor */
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struct peak_usb_adapter {
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char *name;
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u32 device_id;
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u32 ctrlmode_supported;
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struct can_clock clock;
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const struct can_bittiming_const * const bittiming_const;
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const struct can_bittiming_const * const data_bittiming_const;
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unsigned int ctrl_count;
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int (*intf_probe)(struct usb_interface *intf);
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int (*dev_init)(struct peak_usb_device *dev);
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void (*dev_exit)(struct peak_usb_device *dev);
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void (*dev_free)(struct peak_usb_device *dev);
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int (*dev_open)(struct peak_usb_device *dev);
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int (*dev_close)(struct peak_usb_device *dev);
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int (*dev_set_bittiming)(struct peak_usb_device *dev,
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struct can_bittiming *bt);
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int (*dev_set_data_bittiming)(struct peak_usb_device *dev,
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struct can_bittiming *bt);
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int (*dev_set_bus)(struct peak_usb_device *dev, u8 onoff);
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int (*dev_get_device_id)(struct peak_usb_device *dev, u32 *device_id);
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int (*dev_decode_buf)(struct peak_usb_device *dev, struct urb *urb);
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int (*dev_encode_msg)(struct peak_usb_device *dev, struct sk_buff *skb,
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u8 *obuf, size_t *size);
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int (*dev_start)(struct peak_usb_device *dev);
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int (*dev_stop)(struct peak_usb_device *dev);
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int (*dev_restart_async)(struct peak_usb_device *dev, struct urb *urb,
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u8 *buf);
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int (*do_get_berr_counter)(const struct net_device *netdev,
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struct can_berr_counter *bec);
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u8 ep_msg_in;
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u8 ep_msg_out[PCAN_USB_MAX_CHANNEL];
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u8 ts_used_bits;
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u32 ts_period;
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u8 us_per_ts_shift;
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u32 us_per_ts_scale;
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int rx_buffer_size;
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int tx_buffer_size;
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int sizeof_dev_private;
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};
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extern const struct peak_usb_adapter pcan_usb;
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extern const struct peak_usb_adapter pcan_usb_pro;
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extern const struct peak_usb_adapter pcan_usb_fd;
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extern const struct peak_usb_adapter pcan_usb_chip;
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extern const struct peak_usb_adapter pcan_usb_pro_fd;
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extern const struct peak_usb_adapter pcan_usb_x6;
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struct peak_time_ref {
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ktime_t tv_host_0, tv_host;
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u32 ts_dev_1, ts_dev_2;
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u64 ts_total;
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u32 tick_count;
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const struct peak_usb_adapter *adapter;
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};
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struct peak_tx_urb_context {
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struct peak_usb_device *dev;
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u32 echo_index;
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u8 data_len;
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struct urb *urb;
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};
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#define PCAN_USB_STATE_CONNECTED 0x00000001
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#define PCAN_USB_STATE_STARTED 0x00000002
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/* PEAK-System USB device */
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struct peak_usb_device {
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struct can_priv can;
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const struct peak_usb_adapter *adapter;
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unsigned int ctrl_idx;
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u32 state;
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struct sk_buff *echo_skb[PCAN_USB_MAX_TX_URBS];
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struct usb_device *udev;
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struct net_device *netdev;
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atomic_t active_tx_urbs;
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struct usb_anchor tx_submitted;
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struct peak_tx_urb_context tx_contexts[PCAN_USB_MAX_TX_URBS];
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u8 *cmd_buf;
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struct usb_anchor rx_submitted;
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u32 device_number;
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u8 device_rev;
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u8 ep_msg_in;
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u8 ep_msg_out;
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u16 bus_load;
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struct peak_usb_device *prev_siblings;
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struct peak_usb_device *next_siblings;
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};
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void pcan_dump_mem(char *prompt, void *p, int l);
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/* common timestamp management */
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void peak_usb_init_time_ref(struct peak_time_ref *time_ref,
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const struct peak_usb_adapter *adapter);
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void peak_usb_update_ts_now(struct peak_time_ref *time_ref, u32 ts_now);
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void peak_usb_set_ts_now(struct peak_time_ref *time_ref, u32 ts_now);
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void peak_usb_get_ts_time(struct peak_time_ref *time_ref, u32 ts, ktime_t *tv);
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int peak_usb_netif_rx(struct sk_buff *skb,
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struct peak_time_ref *time_ref, u32 ts_low);
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void peak_usb_async_complete(struct urb *urb);
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void peak_usb_restart_complete(struct peak_usb_device *dev);
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#endif
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