// SPDX-License-Identifier: GPL-2.0-only /* * CAN driver for PEAK System PCAN-USB FD / PCAN-USB Pro FD adapter * * Copyright (C) 2013-2014 Stephane Grosjean <[email protected]> */ #include <linux/ethtool.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/usb.h> #include <linux/can.h> #include <linux/can/dev.h> #include <linux/can/error.h> #include <linux/can/dev/peak_canfd.h> #include "pcan_usb_core.h" #include "pcan_usb_pro.h" #define PCAN_USBPROFD_CHANNEL_COUNT … #define PCAN_USBFD_CHANNEL_COUNT … /* PCAN-USB Pro FD adapter internal clock (Hz) */ #define PCAN_UFD_CRYSTAL_HZ … #define PCAN_UFD_CMD_BUFFER_SIZE … #define PCAN_UFD_LOSPD_PKT_SIZE … /* PCAN-USB Pro FD command timeout (ms.) */ #define PCAN_UFD_CMD_TIMEOUT_MS … /* PCAN-USB Pro FD rx/tx buffers size */ #define PCAN_UFD_RX_BUFFER_SIZE … #define PCAN_UFD_TX_BUFFER_SIZE … /* struct pcan_ufd_fw_info::type */ #define PCAN_USBFD_TYPE_STD … #define PCAN_USBFD_TYPE_EXT … /* read some versions info from the hw device */ struct __packed pcan_ufd_fw_info { … }; /* handle device specific info used by the netdevices */ struct pcan_usb_fd_if { … }; /* device information */ struct pcan_usb_fd_device { … }; /* Extended USB commands (non uCAN commands) */ /* Clock Modes command */ #define PCAN_UFD_CMD_CLK_SET … #define PCAN_UFD_CLK_80MHZ … #define PCAN_UFD_CLK_60MHZ … #define PCAN_UFD_CLK_40MHZ … #define PCAN_UFD_CLK_30MHZ … #define PCAN_UFD_CLK_24MHZ … #define PCAN_UFD_CLK_20MHZ … #define PCAN_UFD_CLK_DEF … struct __packed pcan_ufd_clock { … }; /* LED control command */ #define PCAN_UFD_CMD_LED_SET … #define PCAN_UFD_LED_DEV … #define PCAN_UFD_LED_FAST … #define PCAN_UFD_LED_SLOW … #define PCAN_UFD_LED_ON … #define PCAN_UFD_LED_OFF … #define PCAN_UFD_LED_DEF … struct __packed pcan_ufd_led { … }; /* Extended usage of uCAN commands CMD_xxx_xx_OPTION for PCAN-USB Pro FD */ #define PCAN_UFD_FLTEXT_CALIBRATION … struct __packed pcan_ufd_options { … }; /* Extended usage of uCAN messages for PCAN-USB Pro FD */ #define PCAN_UFD_MSG_CALIBRATION … struct __packed pcan_ufd_ts_msg { … }; #define PCAN_UFD_MSG_OVERRUN … #define PCAN_UFD_OVMSG_CHANNEL(o) … struct __packed pcan_ufd_ovr_msg { … }; #define PCAN_UFD_CMD_DEVID_SET … struct __packed pcan_ufd_device_id { … }; static inline int pufd_omsg_get_channel(struct pcan_ufd_ovr_msg *om) { … } /* Clock mode frequency values */ static const u32 pcan_usb_fd_clk_freq[6] = …; /* return a device USB interface */ static inline struct pcan_usb_fd_if *pcan_usb_fd_dev_if(struct peak_usb_device *dev) { … } /* return a device USB commands buffer */ static inline void *pcan_usb_fd_cmd_buffer(struct peak_usb_device *dev) { … } /* send PCAN-USB Pro FD commands synchronously */ static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail) { … } static int pcan_usb_fd_read_fwinfo(struct peak_usb_device *dev, struct pcan_ufd_fw_info *fw_info) { … } /* build the commands list in the given buffer, to enter operational mode */ static int pcan_usb_fd_build_restart_cmd(struct peak_usb_device *dev, u8 *buf) { … } /* set CAN bus on/off */ static int pcan_usb_fd_set_bus(struct peak_usb_device *dev, u8 onoff) { … } /* set filtering masks: * * idx in range [0..63] selects a row #idx, all rows otherwise * mask in range [0..0xffffffff] defines up to 32 CANIDs in the row(s) * * Each bit of this 64 x 32 bits array defines a CANID value: * * bit[i,j] = 1 implies that CANID=(i x 32)+j will be received, while * bit[i,j] = 0 implies that CANID=(i x 32)+j will be discarded. */ static int pcan_usb_fd_set_filter_std(struct peak_usb_device *dev, int idx, u32 mask) { … } /* set/unset options * * onoff set(1)/unset(0) options * mask each bit defines a kind of options to set/unset */ static int pcan_usb_fd_set_options(struct peak_usb_device *dev, bool onoff, u16 ucan_mask, u16 usb_mask) { … } /* setup LED control */ static int pcan_usb_fd_set_can_led(struct peak_usb_device *dev, u8 led_mode) { … } /* set CAN clock domain */ static int pcan_usb_fd_set_clock_domain(struct peak_usb_device *dev, u8 clk_mode) { … } /* set bittiming for CAN and CAN-FD header */ static int pcan_usb_fd_set_bittiming_slow(struct peak_usb_device *dev, struct can_bittiming *bt) { … } /* set CAN-FD bittiming for data */ static int pcan_usb_fd_set_bittiming_fast(struct peak_usb_device *dev, struct can_bittiming *bt) { … } /* read user CAN channel id from device */ static int pcan_usb_fd_get_can_channel_id(struct peak_usb_device *dev, u32 *can_ch_id) { … } /* set a new CAN channel id in the flash memory of the device */ static int pcan_usb_fd_set_can_channel_id(struct peak_usb_device *dev, u32 can_ch_id) { … } /* handle restart but in asynchronously way * (uses PCAN-USB Pro code to complete asynchronous request) */ static int pcan_usb_fd_restart_async(struct peak_usb_device *dev, struct urb *urb, u8 *buf) { … } static int pcan_usb_fd_drv_loaded(struct peak_usb_device *dev, bool loaded) { … } static int pcan_usb_fd_decode_canmsg(struct pcan_usb_fd_if *usb_if, struct pucan_msg *rx_msg) { … } /* handle uCAN status message */ static int pcan_usb_fd_decode_status(struct pcan_usb_fd_if *usb_if, struct pucan_msg *rx_msg) { … } /* handle uCAN error message */ static int pcan_usb_fd_decode_error(struct pcan_usb_fd_if *usb_if, struct pucan_msg *rx_msg) { … } /* handle uCAN overrun message */ static int pcan_usb_fd_decode_overrun(struct pcan_usb_fd_if *usb_if, struct pucan_msg *rx_msg) { … } /* handle USB calibration message */ static void pcan_usb_fd_decode_ts(struct pcan_usb_fd_if *usb_if, struct pucan_msg *rx_msg) { … } /* callback for bulk IN urb */ static int pcan_usb_fd_decode_buf(struct peak_usb_device *dev, struct urb *urb) { … } /* CAN/CANFD frames encoding callback */ static int pcan_usb_fd_encode_msg(struct peak_usb_device *dev, struct sk_buff *skb, u8 *obuf, size_t *size) { … } /* start the interface (last chance before set bus on) */ static int pcan_usb_fd_start(struct peak_usb_device *dev) { … } /* socket callback used to copy berr counters values received through USB */ static int pcan_usb_fd_get_berr_counter(const struct net_device *netdev, struct can_berr_counter *bec) { … } /* probe function for all PCAN-USB FD family usb interfaces */ static int pcan_usb_fd_probe(struct usb_interface *intf) { … } /* stop interface (last chance before set bus off) */ static int pcan_usb_fd_stop(struct peak_usb_device *dev) { … } /* called when probing, to initialize a device object */ static int pcan_usb_fd_init(struct peak_usb_device *dev) { … } /* called when driver module is being unloaded */ static void pcan_usb_fd_exit(struct peak_usb_device *dev) { … } /* called when the USB adapter is unplugged */ static void pcan_usb_fd_free(struct peak_usb_device *dev) { … } /* blink LED's */ static int pcan_usb_fd_set_phys_id(struct net_device *netdev, enum ethtool_phys_id_state state) { … } static const struct ethtool_ops pcan_usb_fd_ethtool_ops = …; /* describes the PCAN-USB FD adapter */ static const struct can_bittiming_const pcan_usb_fd_const = …; static const struct can_bittiming_const pcan_usb_fd_data_const = …; const struct peak_usb_adapter pcan_usb_fd = …; /* describes the PCAN-CHIP USB */ static const struct can_bittiming_const pcan_usb_chip_const = …; static const struct can_bittiming_const pcan_usb_chip_data_const = …; const struct peak_usb_adapter pcan_usb_chip = …; /* describes the PCAN-USB Pro FD adapter */ static const struct can_bittiming_const pcan_usb_pro_fd_const = …; static const struct can_bittiming_const pcan_usb_pro_fd_data_const = …; const struct peak_usb_adapter pcan_usb_pro_fd = …; /* describes the PCAN-USB X6 adapter */ static const struct can_bittiming_const pcan_usb_x6_const = …; static const struct can_bittiming_const pcan_usb_x6_data_const = …; const struct peak_usb_adapter pcan_usb_x6 = …;
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