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