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@@ -0,0 +1,1095 @@
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+/*
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+ * CAN driver for PEAK System PCAN-USB FD / PCAN-USB Pro FD adapter
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+ *
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+ * Copyright (C) 2013-2014 Stephane Grosjean <s.grosjean@peak-system.com>
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published
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+ * by the Free Software Foundation; version 2 of the License.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ */
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+#include <linux/netdevice.h>
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+#include <linux/usb.h>
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+#include <linux/module.h>
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+
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+#include <linux/can.h>
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+#include <linux/can/dev.h>
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+#include <linux/can/error.h>
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+
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+#include "pcan_usb_core.h"
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+#include "pcan_usb_pro.h"
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+#include "pcan_ucan.h"
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+
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+MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB FD adapter");
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+MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB Pro FD adapter");
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+
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+#define PCAN_USBPROFD_CHANNEL_COUNT 2
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+#define PCAN_USBFD_CHANNEL_COUNT 1
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+
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+/* PCAN-USB Pro FD adapter internal clock (Hz) */
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+#define PCAN_UFD_CRYSTAL_HZ 80000000
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+
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+#define PCAN_UFD_CMD_BUFFER_SIZE 512
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+#define PCAN_UFD_LOSPD_PKT_SIZE 64
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+
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+/* PCAN-USB Pro FD command timeout (ms.) */
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+#define PCAN_UFD_CMD_TIMEOUT_MS 1000
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+
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+/* PCAN-USB Pro FD rx/tx buffers size */
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+#define PCAN_UFD_RX_BUFFER_SIZE 2048
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+#define PCAN_UFD_TX_BUFFER_SIZE 512
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+
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+/* read some versions info from the hw devcie */
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+struct __packed pcan_ufd_fw_info {
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+ __le16 size_of; /* sizeof this */
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+ __le16 type; /* type of this structure */
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+ u8 hw_type; /* Type of hardware (HW_TYPE_xxx) */
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+ u8 bl_version[3]; /* Bootloader version */
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+ u8 hw_version; /* Hardware version (PCB) */
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+ u8 fw_version[3]; /* Firmware version */
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+ __le32 dev_id[2]; /* "device id" per CAN */
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+ __le32 ser_no; /* S/N */
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+ __le32 flags; /* special functions */
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+};
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+
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+/* handle device specific info used by the netdevices */
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+struct pcan_usb_fd_if {
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+ struct peak_usb_device *dev[PCAN_USB_MAX_CHANNEL];
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+ struct pcan_ufd_fw_info fw_info;
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+ struct peak_time_ref time_ref;
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+ int cm_ignore_count;
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+ int dev_opened_count;
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+};
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+
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+/* device information */
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+struct pcan_usb_fd_device {
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+ struct peak_usb_device dev;
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+ struct can_berr_counter bec;
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+ struct pcan_usb_fd_if *usb_if;
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+ u8 *cmd_buffer_addr;
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+};
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+
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+/* Extended USB commands (non uCAN commands) */
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+
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+/* Clock Modes command */
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+#define PCAN_UFD_CMD_CLK_SET 0x80
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+
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+#define PCAN_UFD_CLK_80MHZ 0x0
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+#define PCAN_UFD_CLK_60MHZ 0x1
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+#define PCAN_UFD_CLK_40MHZ 0x2
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+#define PCAN_UFD_CLK_30MHZ 0x3
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+#define PCAN_UFD_CLK_24MHZ 0x4
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+#define PCAN_UFD_CLK_20MHZ 0x5
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+#define PCAN_UFD_CLK_DEF PCAN_UFD_CLK_80MHZ
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+
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+struct __packed pcan_ufd_clock {
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+ __le16 opcode_channel;
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+
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+ u8 mode;
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+ u8 unused[5];
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+};
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+
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+/* LED control command */
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+#define PCAN_UFD_CMD_LED_SET 0x86
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+
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+#define PCAN_UFD_LED_DEV 0x00
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+#define PCAN_UFD_LED_FAST 0x01
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+#define PCAN_UFD_LED_SLOW 0x02
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+#define PCAN_UFD_LED_ON 0x03
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+#define PCAN_UFD_LED_OFF 0x04
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+#define PCAN_UFD_LED_DEF PCAN_UFD_LED_DEV
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+
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+struct __packed pcan_ufd_led {
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+ __le16 opcode_channel;
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+
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+ u8 mode;
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+ u8 unused[5];
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+};
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+
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+/* Extended usage of uCAN commands CMD_RX_FRAME_xxxABLE for PCAN-USB Pro FD */
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+#define PCAN_UFD_FLTEXT_CALIBRATION 0x8000
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+
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+struct __packed pcan_ufd_filter_ext {
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+ __le16 opcode_channel;
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+
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+ __le16 ext_mask;
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+ u16 unused;
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+ __le16 usb_mask;
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+};
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+
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+/* Extended usage of uCAN messages for PCAN-USB Pro FD */
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+#define PCAN_UFD_MSG_CALIBRATION 0x100
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+
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+struct __packed pcan_ufd_ts_msg {
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+ __le16 size;
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+ __le16 type;
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+ __le32 ts_low;
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+ __le32 ts_high;
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+ __le16 usb_frame_index;
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+ u16 unused;
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+};
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+
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+#define PCAN_UFD_MSG_OVERRUN 0x101
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+
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+#define PCAN_UFD_OVMSG_CHANNEL(o) ((o)->channel & 0xf)
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+
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+struct __packed pcan_ufd_ovr_msg {
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+ __le16 size;
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+ __le16 type;
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+ __le32 ts_low;
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+ __le32 ts_high;
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+ u8 channel;
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+ u8 unused[3];
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+};
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+
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+static inline int pufd_omsg_get_channel(struct pcan_ufd_ovr_msg *om)
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+{
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+ return om->channel & 0xf;
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+}
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+
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+/* Clock mode frequency values */
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+static const u32 pcan_usb_fd_clk_freq[6] = {
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+ [PCAN_UFD_CLK_80MHZ] = 80000000,
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+ [PCAN_UFD_CLK_60MHZ] = 60000000,
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+ [PCAN_UFD_CLK_40MHZ] = 40000000,
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+ [PCAN_UFD_CLK_30MHZ] = 30000000,
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+ [PCAN_UFD_CLK_24MHZ] = 24000000,
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+ [PCAN_UFD_CLK_20MHZ] = 20000000
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+};
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+
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+/* return a device USB interface */
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+static inline
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+struct pcan_usb_fd_if *pcan_usb_fd_dev_if(struct peak_usb_device *dev)
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+{
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+ struct pcan_usb_fd_device *pdev =
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+ container_of(dev, struct pcan_usb_fd_device, dev);
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+ return pdev->usb_if;
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+}
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+
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+/* return a device USB commands buffer */
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+static inline void *pcan_usb_fd_cmd_buffer(struct peak_usb_device *dev)
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+{
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+ struct pcan_usb_fd_device *pdev =
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+ container_of(dev, struct pcan_usb_fd_device, dev);
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+ return pdev->cmd_buffer_addr;
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+}
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+
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+/* send PCAN-USB Pro FD commands synchronously */
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+static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail)
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+{
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+ void *cmd_head = pcan_usb_fd_cmd_buffer(dev);
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+ int err;
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+ u8 *packet_ptr;
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+ int i, n = 1, packet_len;
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+ ptrdiff_t cmd_len;
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+
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+ /* usb device unregistered? */
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+ if (!(dev->state & PCAN_USB_STATE_CONNECTED))
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+ return 0;
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+
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+ /* if a packet is not filled completely by commands, the command list
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+ * is terminated with an "end of collection" record.
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+ */
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+ cmd_len = cmd_tail - cmd_head;
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+ if (cmd_len <= (PCAN_UFD_CMD_BUFFER_SIZE - sizeof(u64))) {
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+ memset(cmd_tail, 0xff, sizeof(u64));
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+ cmd_len += sizeof(u64);
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+ }
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+
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+ packet_ptr = cmd_head;
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+
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+ /* firmware is not able to re-assemble 512 bytes buffer in full-speed */
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+ if ((dev->udev->speed != USB_SPEED_HIGH) &&
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+ (cmd_len > PCAN_UFD_LOSPD_PKT_SIZE)) {
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+ packet_len = PCAN_UFD_LOSPD_PKT_SIZE;
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+ n += cmd_len / packet_len;
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+ } else {
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+ packet_len = cmd_len;
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+ }
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+
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+ for (i = 0; i < n; i++) {
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+ err = usb_bulk_msg(dev->udev,
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+ usb_sndbulkpipe(dev->udev,
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+ PCAN_USBPRO_EP_CMDOUT),
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+ packet_ptr, packet_len,
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+ NULL, PCAN_UFD_CMD_TIMEOUT_MS);
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+ if (err) {
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+ netdev_err(dev->netdev,
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+ "sending command failure: %d\n", err);
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+ break;
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+ }
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+
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+ packet_ptr += packet_len;
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+ }
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+
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+ return err;
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+}
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+
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+/* build the commands list in the given buffer, to enter operational mode */
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+static int pcan_usb_fd_build_restart_cmd(struct peak_usb_device *dev, u8 *buf)
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+{
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+ struct pucan_wr_err_cnt *prc;
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+ struct pucan_command *cmd;
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+ u8 *pc = buf;
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+
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+ /* 1st, reset error counters: */
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+ prc = (struct pucan_wr_err_cnt *)pc;
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+ prc->opcode_channel = pucan_cmd_opcode_channel(dev,
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+ PUCAN_CMD_WR_ERR_CNT);
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+
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+ /* select both counters */
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+ prc->sel_mask = cpu_to_le16(PUCAN_WRERRCNT_TE|PUCAN_WRERRCNT_RE);
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+
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+ /* and reset their values */
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+ prc->tx_counter = 0;
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+ prc->rx_counter = 0;
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+
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+ /* moves the pointer forward */
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+ pc += sizeof(struct pucan_wr_err_cnt);
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+
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+ /* next, go back to operational mode */
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+ cmd = (struct pucan_command *)pc;
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+ cmd->opcode_channel = pucan_cmd_opcode_channel(dev,
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+ (dev->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) ?
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+ PUCAN_CMD_LISTEN_ONLY_MODE :
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+ PUCAN_CMD_NORMAL_MODE);
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+ pc += sizeof(struct pucan_command);
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+
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+ return pc - buf;
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+}
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+
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+/* set CAN bus on/off */
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+static int pcan_usb_fd_set_bus(struct peak_usb_device *dev, u8 onoff)
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+{
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+ u8 *pc = pcan_usb_fd_cmd_buffer(dev);
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+ int l;
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+
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+ if (onoff) {
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+ /* build the cmds list to enter operational mode */
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+ l = pcan_usb_fd_build_restart_cmd(dev, pc);
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+ } else {
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+ struct pucan_command *cmd = (struct pucan_command *)pc;
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+
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+ /* build cmd to go back to reset mode */
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+ cmd->opcode_channel = pucan_cmd_opcode_channel(dev,
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+ PUCAN_CMD_RESET_MODE);
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+ l = sizeof(struct pucan_command);
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+ }
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+
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+ /* send the command */
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+ return pcan_usb_fd_send_cmd(dev, pc + l);
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+}
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+
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+/* set filtering masks:
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+ *
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+ * idx in range [0..63] selects a row #idx, all rows otherwise
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+ * mask in range [0..0xffffffff] defines up to 32 CANIDs in the row(s)
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+ *
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+ * Each bit of this 64 x 32 bits array defines a CANID value:
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+ *
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+ * bit[i,j] = 1 implies that CANID=(i x 32)+j will be received, while
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+ * bit[i,j] = 0 implies that CANID=(i x 32)+j will be discarded.
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+ */
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+static int pcan_usb_fd_set_filter_std(struct peak_usb_device *dev, int idx,
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+ u32 mask)
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+{
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+ struct pucan_filter_std *cmd = pcan_usb_fd_cmd_buffer(dev);
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+ int i, n;
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+
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+ /* select all rows when idx is out of range [0..63] */
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+ if ((idx < 0) || (idx >= (1 << PUCAN_FLTSTD_ROW_IDX_BITS))) {
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+ n = 1 << PUCAN_FLTSTD_ROW_IDX_BITS;
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+ idx = 0;
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+
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+ /* select the row (and only the row) otherwise */
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+ } else {
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+ n = idx + 1;
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+ }
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+
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+ for (i = idx; i < n; i++, cmd++) {
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+ cmd->opcode_channel = pucan_cmd_opcode_channel(dev,
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+ PUCAN_CMD_FILTER_STD);
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+ cmd->idx = cpu_to_le16(i);
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+ cmd->mask = cpu_to_le32(mask);
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+ }
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+
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+ /* send the command */
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+ return pcan_usb_fd_send_cmd(dev, cmd);
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+}
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+
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+/* set/unset notifications filter:
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+ *
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+ * onoff sets(1)/unset(0) notifications
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+ * mask each bit defines a kind of notification to set/unset
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+ */
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+static int pcan_usb_fd_set_filter_ext(struct peak_usb_device *dev,
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+ bool onoff, u16 ext_mask, u16 usb_mask)
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+{
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+ struct pcan_ufd_filter_ext *cmd = pcan_usb_fd_cmd_buffer(dev);
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+
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+ cmd->opcode_channel = pucan_cmd_opcode_channel(dev,
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+ (onoff) ? PUCAN_CMD_RX_FRAME_ENABLE :
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+ PUCAN_CMD_RX_FRAME_DISABLE);
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+
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+ cmd->ext_mask = cpu_to_le16(ext_mask);
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+ cmd->usb_mask = cpu_to_le16(usb_mask);
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+
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+ /* send the command */
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+ return pcan_usb_fd_send_cmd(dev, ++cmd);
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+}
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+
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+/* setup LED control */
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+static int pcan_usb_fd_set_can_led(struct peak_usb_device *dev, u8 led_mode)
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+{
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+ struct pcan_ufd_led *cmd = pcan_usb_fd_cmd_buffer(dev);
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+
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+ cmd->opcode_channel = pucan_cmd_opcode_channel(dev,
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+ PCAN_UFD_CMD_LED_SET);
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+ cmd->mode = led_mode;
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+
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+ /* send the command */
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+ return pcan_usb_fd_send_cmd(dev, ++cmd);
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+}
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+
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+/* set CAN clock domain */
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+static int pcan_usb_fd_set_clock_domain(struct peak_usb_device *dev,
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+ u8 clk_mode)
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+{
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+ struct pcan_ufd_clock *cmd = pcan_usb_fd_cmd_buffer(dev);
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+
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+ cmd->opcode_channel = pucan_cmd_opcode_channel(dev,
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+ PCAN_UFD_CMD_CLK_SET);
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+ cmd->mode = clk_mode;
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+
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+ /* send the command */
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+ return pcan_usb_fd_send_cmd(dev, ++cmd);
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+}
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+
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+/* set bittiming for CAN and CAN-FD header */
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+static int pcan_usb_fd_set_bittiming_slow(struct peak_usb_device *dev,
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+ struct can_bittiming *bt)
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+{
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+ struct pucan_timing_slow *cmd = pcan_usb_fd_cmd_buffer(dev);
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+
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+ cmd->opcode_channel = pucan_cmd_opcode_channel(dev,
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+ PUCAN_CMD_TIMING_SLOW);
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+ cmd->sjw_t = PUCAN_TSLOW_SJW_T(bt->sjw - 1,
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+ dev->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES);
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+
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+ cmd->tseg2 = PUCAN_TSLOW_TSEG2(bt->phase_seg2 - 1);
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|
+ cmd->tseg1 = PUCAN_TSLOW_TSEG1(bt->prop_seg + bt->phase_seg1 - 1);
|
|
|
+ cmd->brp = cpu_to_le16(PUCAN_TSLOW_BRP(bt->brp - 1));
|
|
|
+
|
|
|
+ cmd->ewl = 96; /* default */
|
|
|
+
|
|
|
+ /* send the command */
|
|
|
+ return pcan_usb_fd_send_cmd(dev, ++cmd);
|
|
|
+}
|
|
|
+
|
|
|
+/* set CAN-FD bittiming for data */
|
|
|
+static int pcan_usb_fd_set_bittiming_fast(struct peak_usb_device *dev,
|
|
|
+ struct can_bittiming *bt)
|
|
|
+{
|
|
|
+ struct pucan_timing_fast *cmd = pcan_usb_fd_cmd_buffer(dev);
|
|
|
+
|
|
|
+ cmd->opcode_channel = pucan_cmd_opcode_channel(dev,
|
|
|
+ PUCAN_CMD_TIMING_FAST);
|
|
|
+ cmd->sjw = PUCAN_TFAST_SJW(bt->sjw - 1);
|
|
|
+ cmd->tseg2 = PUCAN_TFAST_TSEG2(bt->phase_seg2 - 1);
|
|
|
+ cmd->tseg1 = PUCAN_TFAST_TSEG1(bt->prop_seg + bt->phase_seg1 - 1);
|
|
|
+ cmd->brp = cpu_to_le16(PUCAN_TFAST_BRP(bt->brp - 1));
|
|
|
+
|
|
|
+ /* send the command */
|
|
|
+ return pcan_usb_fd_send_cmd(dev, ++cmd);
|
|
|
+}
|
|
|
+
|
|
|
+/* 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)
|
|
|
+{
|
|
|
+ u8 *pc = buf;
|
|
|
+
|
|
|
+ /* build the entire cmds list in the provided buffer, to go back into
|
|
|
+ * operational mode.
|
|
|
+ */
|
|
|
+ pc += pcan_usb_fd_build_restart_cmd(dev, pc);
|
|
|
+
|
|
|
+ /* add EOC */
|
|
|
+ memset(pc, 0xff, sizeof(struct pucan_command));
|
|
|
+ pc += sizeof(struct pucan_command);
|
|
|
+
|
|
|
+ /* complete the URB */
|
|
|
+ usb_fill_bulk_urb(urb, dev->udev,
|
|
|
+ usb_sndbulkpipe(dev->udev, PCAN_USBPRO_EP_CMDOUT),
|
|
|
+ buf, pc - buf,
|
|
|
+ pcan_usb_pro_restart_complete, dev);
|
|
|
+
|
|
|
+ /* and submit it. */
|
|
|
+ return usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
+}
|
|
|
+
|
|
|
+static int pcan_usb_fd_drv_loaded(struct peak_usb_device *dev, bool loaded)
|
|
|
+{
|
|
|
+ struct pcan_usb_fd_device *pdev =
|
|
|
+ container_of(dev, struct pcan_usb_fd_device, dev);
|
|
|
+
|
|
|
+ pdev->cmd_buffer_addr[0] = 0;
|
|
|
+ pdev->cmd_buffer_addr[1] = !!loaded;
|
|
|
+
|
|
|
+ return pcan_usb_pro_send_req(dev,
|
|
|
+ PCAN_USBPRO_REQ_FCT,
|
|
|
+ PCAN_USBPRO_FCT_DRVLD,
|
|
|
+ pdev->cmd_buffer_addr,
|
|
|
+ PCAN_USBPRO_FCT_DRVLD_REQ_LEN);
|
|
|
+}
|
|
|
+
|
|
|
+static int pcan_usb_fd_decode_canmsg(struct pcan_usb_fd_if *usb_if,
|
|
|
+ struct pucan_msg *rx_msg)
|
|
|
+{
|
|
|
+ struct pucan_rx_msg *rm = (struct pucan_rx_msg *)rx_msg;
|
|
|
+ struct peak_usb_device *dev = usb_if->dev[pucan_msg_get_channel(rm)];
|
|
|
+ struct net_device *netdev = dev->netdev;
|
|
|
+ struct canfd_frame *cfd;
|
|
|
+ struct sk_buff *skb;
|
|
|
+ const u16 rx_msg_flags = le16_to_cpu(rm->flags);
|
|
|
+
|
|
|
+ if (rx_msg_flags & PUCAN_MSG_EXT_DATA_LEN) {
|
|
|
+ /* CANFD frame case */
|
|
|
+ skb = alloc_canfd_skb(netdev, &cfd);
|
|
|
+ if (!skb)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ if (rx_msg_flags & PUCAN_MSG_BITRATE_SWITCH)
|
|
|
+ cfd->flags |= CANFD_BRS;
|
|
|
+
|
|
|
+ if (rx_msg_flags & PUCAN_MSG_ERROR_STATE_IND)
|
|
|
+ cfd->flags |= CANFD_ESI;
|
|
|
+
|
|
|
+ cfd->len = can_dlc2len(get_canfd_dlc(pucan_msg_get_dlc(rm)));
|
|
|
+ } else {
|
|
|
+ /* CAN 2.0 frame case */
|
|
|
+ skb = alloc_can_skb(netdev, (struct can_frame **)&cfd);
|
|
|
+ if (!skb)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ cfd->len = get_can_dlc(pucan_msg_get_dlc(rm));
|
|
|
+ }
|
|
|
+
|
|
|
+ cfd->can_id = le32_to_cpu(rm->can_id);
|
|
|
+
|
|
|
+ if (rx_msg_flags & PUCAN_MSG_EXT_ID)
|
|
|
+ cfd->can_id |= CAN_EFF_FLAG;
|
|
|
+
|
|
|
+ if (rx_msg_flags & PUCAN_MSG_RTR)
|
|
|
+ cfd->can_id |= CAN_RTR_FLAG;
|
|
|
+ else
|
|
|
+ memcpy(cfd->data, rm->d, cfd->len);
|
|
|
+
|
|
|
+ peak_usb_netif_rx(skb, &usb_if->time_ref,
|
|
|
+ le32_to_cpu(rm->ts_low), le32_to_cpu(rm->ts_high));
|
|
|
+
|
|
|
+ netdev->stats.rx_packets++;
|
|
|
+ netdev->stats.rx_bytes += cfd->len;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/* handle uCAN status message */
|
|
|
+static int pcan_usb_fd_decode_status(struct pcan_usb_fd_if *usb_if,
|
|
|
+ struct pucan_msg *rx_msg)
|
|
|
+{
|
|
|
+ struct pucan_status_msg *sm = (struct pucan_status_msg *)rx_msg;
|
|
|
+ struct peak_usb_device *dev = usb_if->dev[pucan_stmsg_get_channel(sm)];
|
|
|
+ struct pcan_usb_fd_device *pdev =
|
|
|
+ container_of(dev, struct pcan_usb_fd_device, dev);
|
|
|
+ enum can_state new_state = CAN_STATE_ERROR_ACTIVE;
|
|
|
+ enum can_state rx_state, tx_state;
|
|
|
+ struct net_device *netdev = dev->netdev;
|
|
|
+ struct can_frame *cf;
|
|
|
+ struct sk_buff *skb;
|
|
|
+
|
|
|
+ /* nothing should be sent while in BUS_OFF state */
|
|
|
+ if (dev->can.state == CAN_STATE_BUS_OFF)
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ if (sm->channel_p_w_b & PUCAN_BUS_BUSOFF) {
|
|
|
+ new_state = CAN_STATE_BUS_OFF;
|
|
|
+ } else if (sm->channel_p_w_b & PUCAN_BUS_PASSIVE) {
|
|
|
+ new_state = CAN_STATE_ERROR_PASSIVE;
|
|
|
+ } else if (sm->channel_p_w_b & PUCAN_BUS_WARNING) {
|
|
|
+ new_state = CAN_STATE_ERROR_WARNING;
|
|
|
+ } else {
|
|
|
+ /* no error bit (so, no error skb, back to active state) */
|
|
|
+ dev->can.state = CAN_STATE_ERROR_ACTIVE;
|
|
|
+ pdev->bec.txerr = 0;
|
|
|
+ pdev->bec.rxerr = 0;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* state hasn't changed */
|
|
|
+ if (new_state == dev->can.state)
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ /* handle bus state change */
|
|
|
+ tx_state = (pdev->bec.txerr >= pdev->bec.rxerr) ? new_state : 0;
|
|
|
+ rx_state = (pdev->bec.txerr <= pdev->bec.rxerr) ? new_state : 0;
|
|
|
+
|
|
|
+ /* allocate an skb to store the error frame */
|
|
|
+ skb = alloc_can_err_skb(netdev, &cf);
|
|
|
+ if (skb)
|
|
|
+ can_change_state(netdev, cf, tx_state, rx_state);
|
|
|
+
|
|
|
+ /* things must be done even in case of OOM */
|
|
|
+ if (new_state == CAN_STATE_BUS_OFF)
|
|
|
+ can_bus_off(netdev);
|
|
|
+
|
|
|
+ if (!skb)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ peak_usb_netif_rx(skb, &usb_if->time_ref,
|
|
|
+ le32_to_cpu(sm->ts_low), le32_to_cpu(sm->ts_high));
|
|
|
+
|
|
|
+ netdev->stats.rx_packets++;
|
|
|
+ netdev->stats.rx_bytes += cf->can_dlc;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/* handle uCAN error message */
|
|
|
+static int pcan_usb_fd_decode_error(struct pcan_usb_fd_if *usb_if,
|
|
|
+ struct pucan_msg *rx_msg)
|
|
|
+{
|
|
|
+ struct pucan_error_msg *er = (struct pucan_error_msg *)rx_msg;
|
|
|
+ struct peak_usb_device *dev = usb_if->dev[pucan_ermsg_get_channel(er)];
|
|
|
+ struct pcan_usb_fd_device *pdev =
|
|
|
+ container_of(dev, struct pcan_usb_fd_device, dev);
|
|
|
+
|
|
|
+ /* keep a trace of tx and rx error counters for later use */
|
|
|
+ pdev->bec.txerr = er->tx_err_cnt;
|
|
|
+ pdev->bec.rxerr = er->rx_err_cnt;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/* handle uCAN overrun message */
|
|
|
+static int pcan_usb_fd_decode_overrun(struct pcan_usb_fd_if *usb_if,
|
|
|
+ struct pucan_msg *rx_msg)
|
|
|
+{
|
|
|
+ struct pcan_ufd_ovr_msg *ov = (struct pcan_ufd_ovr_msg *)rx_msg;
|
|
|
+ struct peak_usb_device *dev = usb_if->dev[pufd_omsg_get_channel(ov)];
|
|
|
+ struct net_device *netdev = dev->netdev;
|
|
|
+ struct can_frame *cf;
|
|
|
+ struct sk_buff *skb;
|
|
|
+
|
|
|
+ /* allocate an skb to store the error frame */
|
|
|
+ skb = alloc_can_err_skb(netdev, &cf);
|
|
|
+ if (!skb)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ cf->can_id |= CAN_ERR_CRTL;
|
|
|
+ cf->data[1] |= CAN_ERR_CRTL_RX_OVERFLOW;
|
|
|
+
|
|
|
+ peak_usb_netif_rx(skb, &usb_if->time_ref,
|
|
|
+ le32_to_cpu(ov->ts_low), le32_to_cpu(ov->ts_high));
|
|
|
+
|
|
|
+ netdev->stats.rx_over_errors++;
|
|
|
+ netdev->stats.rx_errors++;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/* handle USB calibration message */
|
|
|
+static void pcan_usb_fd_decode_ts(struct pcan_usb_fd_if *usb_if,
|
|
|
+ struct pucan_msg *rx_msg)
|
|
|
+{
|
|
|
+ struct pcan_ufd_ts_msg *ts = (struct pcan_ufd_ts_msg *)rx_msg;
|
|
|
+
|
|
|
+ /* should wait until clock is stabilized */
|
|
|
+ if (usb_if->cm_ignore_count > 0)
|
|
|
+ usb_if->cm_ignore_count--;
|
|
|
+ else
|
|
|
+ peak_usb_set_ts_now(&usb_if->time_ref, le32_to_cpu(ts->ts_low));
|
|
|
+}
|
|
|
+
|
|
|
+/* callback for bulk IN urb */
|
|
|
+static int pcan_usb_fd_decode_buf(struct peak_usb_device *dev, struct urb *urb)
|
|
|
+{
|
|
|
+ struct pcan_usb_fd_if *usb_if = pcan_usb_fd_dev_if(dev);
|
|
|
+ struct net_device *netdev = dev->netdev;
|
|
|
+ struct pucan_msg *rx_msg;
|
|
|
+ u8 *msg_ptr, *msg_end;
|
|
|
+ int err = 0;
|
|
|
+
|
|
|
+ /* loop reading all the records from the incoming message */
|
|
|
+ msg_ptr = urb->transfer_buffer;
|
|
|
+ msg_end = urb->transfer_buffer + urb->actual_length;
|
|
|
+ for (; msg_ptr < msg_end;) {
|
|
|
+ u16 rx_msg_type, rx_msg_size;
|
|
|
+
|
|
|
+ rx_msg = (struct pucan_msg *)msg_ptr;
|
|
|
+ if (!rx_msg->size) {
|
|
|
+ /* null packet found: end of list */
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ rx_msg_size = le16_to_cpu(rx_msg->size);
|
|
|
+ rx_msg_type = le16_to_cpu(rx_msg->type);
|
|
|
+
|
|
|
+ /* check if the record goes out of current packet */
|
|
|
+ if (msg_ptr + rx_msg_size > msg_end) {
|
|
|
+ netdev_err(netdev,
|
|
|
+ "got frag rec: should inc usb rx buf sze\n");
|
|
|
+ err = -EBADMSG;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ switch (rx_msg_type) {
|
|
|
+ case PUCAN_MSG_CAN_RX:
|
|
|
+ err = pcan_usb_fd_decode_canmsg(usb_if, rx_msg);
|
|
|
+ if (err < 0)
|
|
|
+ goto fail;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case PCAN_UFD_MSG_CALIBRATION:
|
|
|
+ pcan_usb_fd_decode_ts(usb_if, rx_msg);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case PUCAN_MSG_ERROR:
|
|
|
+ err = pcan_usb_fd_decode_error(usb_if, rx_msg);
|
|
|
+ if (err < 0)
|
|
|
+ goto fail;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case PUCAN_MSG_STATUS:
|
|
|
+ err = pcan_usb_fd_decode_status(usb_if, rx_msg);
|
|
|
+ if (err < 0)
|
|
|
+ goto fail;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case PCAN_UFD_MSG_OVERRUN:
|
|
|
+ err = pcan_usb_fd_decode_overrun(usb_if, rx_msg);
|
|
|
+ if (err < 0)
|
|
|
+ goto fail;
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ netdev_err(netdev,
|
|
|
+ "unhandled msg type 0x%02x (%d): ignored\n",
|
|
|
+ rx_msg_type, rx_msg_type);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ msg_ptr += rx_msg_size;
|
|
|
+ }
|
|
|
+
|
|
|
+fail:
|
|
|
+ if (err)
|
|
|
+ pcan_dump_mem("received msg",
|
|
|
+ urb->transfer_buffer, urb->actual_length);
|
|
|
+ return err;
|
|
|
+}
|
|
|
+
|
|
|
+/* 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)
|
|
|
+{
|
|
|
+ struct pucan_tx_msg *tx_msg = (struct pucan_tx_msg *)obuf;
|
|
|
+ struct canfd_frame *cfd = (struct canfd_frame *)skb->data;
|
|
|
+ u16 tx_msg_size, tx_msg_flags;
|
|
|
+ u8 can_dlc;
|
|
|
+
|
|
|
+ tx_msg_size = ALIGN(sizeof(struct pucan_tx_msg) + cfd->len, 4);
|
|
|
+ tx_msg->size = cpu_to_le16(tx_msg_size);
|
|
|
+ tx_msg->type = cpu_to_le16(PUCAN_MSG_CAN_TX);
|
|
|
+
|
|
|
+ tx_msg_flags = 0;
|
|
|
+ if (cfd->can_id & CAN_EFF_FLAG) {
|
|
|
+ tx_msg_flags |= PUCAN_MSG_EXT_ID;
|
|
|
+ tx_msg->can_id = cpu_to_le32(cfd->can_id & CAN_EFF_MASK);
|
|
|
+ } else {
|
|
|
+ tx_msg->can_id = cpu_to_le32(cfd->can_id & CAN_SFF_MASK);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (can_is_canfd_skb(skb)) {
|
|
|
+ /* considering a CANFD frame */
|
|
|
+ can_dlc = can_len2dlc(cfd->len);
|
|
|
+
|
|
|
+ tx_msg_flags |= PUCAN_MSG_EXT_DATA_LEN;
|
|
|
+
|
|
|
+ if (cfd->flags & CANFD_BRS)
|
|
|
+ tx_msg_flags |= PUCAN_MSG_BITRATE_SWITCH;
|
|
|
+
|
|
|
+ if (cfd->flags & CANFD_ESI)
|
|
|
+ tx_msg_flags |= PUCAN_MSG_ERROR_STATE_IND;
|
|
|
+ } else {
|
|
|
+ /* CAND 2.0 frames */
|
|
|
+ can_dlc = cfd->len;
|
|
|
+
|
|
|
+ if (cfd->can_id & CAN_RTR_FLAG)
|
|
|
+ tx_msg_flags |= PUCAN_MSG_RTR;
|
|
|
+ }
|
|
|
+
|
|
|
+ tx_msg->flags = cpu_to_le16(tx_msg_flags);
|
|
|
+ tx_msg->channel_dlc = PUCAN_MSG_CHANNEL_DLC(dev->ctrl_idx, can_dlc);
|
|
|
+ memcpy(tx_msg->d, cfd->data, cfd->len);
|
|
|
+
|
|
|
+ /* add null size message to tag the end (messages are 32-bits aligned)
|
|
|
+ */
|
|
|
+ tx_msg = (struct pucan_tx_msg *)(obuf + tx_msg_size);
|
|
|
+
|
|
|
+ tx_msg->size = 0;
|
|
|
+
|
|
|
+ /* set the whole size of the USB packet to send */
|
|
|
+ *size = tx_msg_size + sizeof(u32);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/* start the interface (last chance before set bus on) */
|
|
|
+static int pcan_usb_fd_start(struct peak_usb_device *dev)
|
|
|
+{
|
|
|
+ struct pcan_usb_fd_device *pdev =
|
|
|
+ container_of(dev, struct pcan_usb_fd_device, dev);
|
|
|
+ int err;
|
|
|
+
|
|
|
+ /* set filter mode: all acceptance */
|
|
|
+ err = pcan_usb_fd_set_filter_std(dev, -1, 0xffffffff);
|
|
|
+ if (err)
|
|
|
+ return err;
|
|
|
+
|
|
|
+ /* opening first device: */
|
|
|
+ if (pdev->usb_if->dev_opened_count == 0) {
|
|
|
+ /* reset time_ref */
|
|
|
+ peak_usb_init_time_ref(&pdev->usb_if->time_ref,
|
|
|
+ &pcan_usb_pro_fd);
|
|
|
+
|
|
|
+ /* enable USB calibration messages */
|
|
|
+ err = pcan_usb_fd_set_filter_ext(dev, 1,
|
|
|
+ PUCAN_FLTEXT_ERROR,
|
|
|
+ PCAN_UFD_FLTEXT_CALIBRATION);
|
|
|
+ }
|
|
|
+
|
|
|
+ pdev->usb_if->dev_opened_count++;
|
|
|
+
|
|
|
+ /* reset cached error counters */
|
|
|
+ pdev->bec.txerr = 0;
|
|
|
+ pdev->bec.rxerr = 0;
|
|
|
+
|
|
|
+ return err;
|
|
|
+}
|
|
|
+
|
|
|
+/* socket callback used to copy berr counters values receieved through USB */
|
|
|
+static int pcan_usb_fd_get_berr_counter(const struct net_device *netdev,
|
|
|
+ struct can_berr_counter *bec)
|
|
|
+{
|
|
|
+ struct peak_usb_device *dev = netdev_priv(netdev);
|
|
|
+ struct pcan_usb_fd_device *pdev =
|
|
|
+ container_of(dev, struct pcan_usb_fd_device, dev);
|
|
|
+
|
|
|
+ *bec = pdev->bec;
|
|
|
+
|
|
|
+ /* must return 0 */
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/* stop interface (last chance before set bus off) */
|
|
|
+static int pcan_usb_fd_stop(struct peak_usb_device *dev)
|
|
|
+{
|
|
|
+ struct pcan_usb_fd_device *pdev =
|
|
|
+ container_of(dev, struct pcan_usb_fd_device, dev);
|
|
|
+
|
|
|
+ /* turn off special msgs for that interface if no other dev opened */
|
|
|
+ if (pdev->usb_if->dev_opened_count == 1)
|
|
|
+ pcan_usb_fd_set_filter_ext(dev, 0,
|
|
|
+ PUCAN_FLTEXT_ERROR,
|
|
|
+ PCAN_UFD_FLTEXT_CALIBRATION);
|
|
|
+ pdev->usb_if->dev_opened_count--;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/* called when probing, to initialize a device object */
|
|
|
+static int pcan_usb_fd_init(struct peak_usb_device *dev)
|
|
|
+{
|
|
|
+ struct pcan_usb_fd_device *pdev =
|
|
|
+ container_of(dev, struct pcan_usb_fd_device, dev);
|
|
|
+ int i, err = -ENOMEM;
|
|
|
+
|
|
|
+ /* do this for 1st channel only */
|
|
|
+ if (!dev->prev_siblings) {
|
|
|
+ /* allocate netdevices common structure attached to first one */
|
|
|
+ pdev->usb_if = kzalloc(sizeof(*pdev->usb_if), GFP_KERNEL);
|
|
|
+ if (!pdev->usb_if)
|
|
|
+ goto err_out;
|
|
|
+
|
|
|
+ /* allocate command buffer once for all for the interface */
|
|
|
+ pdev->cmd_buffer_addr = kmalloc(PCAN_UFD_CMD_BUFFER_SIZE,
|
|
|
+ GFP_KERNEL);
|
|
|
+ if (!pdev->cmd_buffer_addr)
|
|
|
+ goto err_out_1;
|
|
|
+
|
|
|
+ /* number of ts msgs to ignore before taking one into account */
|
|
|
+ pdev->usb_if->cm_ignore_count = 5;
|
|
|
+
|
|
|
+ err = pcan_usb_pro_send_req(dev, PCAN_USBPRO_REQ_INFO,
|
|
|
+ PCAN_USBPRO_INFO_FW,
|
|
|
+ &pdev->usb_if->fw_info,
|
|
|
+ sizeof(pdev->usb_if->fw_info));
|
|
|
+ if (err) {
|
|
|
+ dev_err(dev->netdev->dev.parent,
|
|
|
+ "unable to read %s firmware info (err %d)\n",
|
|
|
+ dev->adapter->name, err);
|
|
|
+ goto err_out_2;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* explicit use of dev_xxx() instead of netdev_xxx() here:
|
|
|
+ * information displayed are related to the device itself, not
|
|
|
+ * to the canx (channel) device.
|
|
|
+ */
|
|
|
+ dev_info(dev->netdev->dev.parent,
|
|
|
+ "PEAK-System %s v%u fw v%u.%u.%u (%u channels)\n",
|
|
|
+ dev->adapter->name, pdev->usb_if->fw_info.hw_version,
|
|
|
+ pdev->usb_if->fw_info.fw_version[0],
|
|
|
+ pdev->usb_if->fw_info.fw_version[1],
|
|
|
+ pdev->usb_if->fw_info.fw_version[2],
|
|
|
+ dev->adapter->ctrl_count);
|
|
|
+
|
|
|
+ /* the currently supported hw is non-ISO */
|
|
|
+ dev->can.ctrlmode = CAN_CTRLMODE_FD_NON_ISO;
|
|
|
+
|
|
|
+ /* tell the hardware the can driver is running */
|
|
|
+ err = pcan_usb_fd_drv_loaded(dev, 1);
|
|
|
+ if (err) {
|
|
|
+ dev_err(dev->netdev->dev.parent,
|
|
|
+ "unable to tell %s driver is loaded (err %d)\n",
|
|
|
+ dev->adapter->name, err);
|
|
|
+ goto err_out_2;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ /* otherwise, simply copy previous sibling's values */
|
|
|
+ struct pcan_usb_fd_device *ppdev =
|
|
|
+ container_of(dev->prev_siblings,
|
|
|
+ struct pcan_usb_fd_device, dev);
|
|
|
+
|
|
|
+ pdev->usb_if = ppdev->usb_if;
|
|
|
+ pdev->cmd_buffer_addr = ppdev->cmd_buffer_addr;
|
|
|
+ }
|
|
|
+
|
|
|
+ pdev->usb_if->dev[dev->ctrl_idx] = dev;
|
|
|
+ dev->device_number =
|
|
|
+ le32_to_cpu(pdev->usb_if->fw_info.dev_id[dev->ctrl_idx]);
|
|
|
+
|
|
|
+ /* set clock domain */
|
|
|
+ for (i = 0; i < ARRAY_SIZE(pcan_usb_fd_clk_freq); i++)
|
|
|
+ if (dev->adapter->clock.freq == pcan_usb_fd_clk_freq[i])
|
|
|
+ break;
|
|
|
+
|
|
|
+ if (i >= ARRAY_SIZE(pcan_usb_fd_clk_freq)) {
|
|
|
+ dev_warn(dev->netdev->dev.parent,
|
|
|
+ "incompatible clock frequencies\n");
|
|
|
+ err = -EINVAL;
|
|
|
+ goto err_out_2;
|
|
|
+ }
|
|
|
+
|
|
|
+ pcan_usb_fd_set_clock_domain(dev, i);
|
|
|
+
|
|
|
+ /* set LED in default state (end of init phase) */
|
|
|
+ pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_DEF);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+err_out_2:
|
|
|
+ kfree(pdev->cmd_buffer_addr);
|
|
|
+err_out_1:
|
|
|
+ kfree(pdev->usb_if);
|
|
|
+err_out:
|
|
|
+ return err;
|
|
|
+}
|
|
|
+
|
|
|
+/* called when driver module is being unloaded */
|
|
|
+static void pcan_usb_fd_exit(struct peak_usb_device *dev)
|
|
|
+{
|
|
|
+ struct pcan_usb_fd_device *pdev =
|
|
|
+ container_of(dev, struct pcan_usb_fd_device, dev);
|
|
|
+
|
|
|
+ /* when rmmod called before unplug and if down, should reset things
|
|
|
+ * before leaving
|
|
|
+ */
|
|
|
+ if (dev->can.state != CAN_STATE_STOPPED) {
|
|
|
+ /* set bus off on the corresponding channel */
|
|
|
+ pcan_usb_fd_set_bus(dev, 0);
|
|
|
+ }
|
|
|
+
|
|
|
+ /* switch off corresponding CAN LEDs */
|
|
|
+ pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_OFF);
|
|
|
+
|
|
|
+ /* if channel #0 (only) */
|
|
|
+ if (dev->ctrl_idx == 0) {
|
|
|
+ /* turn off calibration message if any device were opened */
|
|
|
+ if (pdev->usb_if->dev_opened_count > 0)
|
|
|
+ pcan_usb_fd_set_filter_ext(dev, 0,
|
|
|
+ PUCAN_FLTEXT_ERROR,
|
|
|
+ PCAN_UFD_FLTEXT_CALIBRATION);
|
|
|
+
|
|
|
+ /* tell USB adapter that the driver is being unloaded */
|
|
|
+ pcan_usb_fd_drv_loaded(dev, 0);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/* called when the USB adapter is unplugged */
|
|
|
+static void pcan_usb_fd_free(struct peak_usb_device *dev)
|
|
|
+{
|
|
|
+ /* last device: can free shared objects now */
|
|
|
+ if (!dev->prev_siblings && !dev->next_siblings) {
|
|
|
+ struct pcan_usb_fd_device *pdev =
|
|
|
+ container_of(dev, struct pcan_usb_fd_device, dev);
|
|
|
+
|
|
|
+ /* free commands buffer */
|
|
|
+ kfree(pdev->cmd_buffer_addr);
|
|
|
+
|
|
|
+ /* free usb interface object */
|
|
|
+ kfree(pdev->usb_if);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/* describes the PCAN-USB FD adapter */
|
|
|
+const struct peak_usb_adapter pcan_usb_fd = {
|
|
|
+ .name = "PCAN-USB FD",
|
|
|
+ .device_id = PCAN_USBFD_PRODUCT_ID,
|
|
|
+ .ctrl_count = PCAN_USBFD_CHANNEL_COUNT,
|
|
|
+ .ctrlmode_supported = CAN_CTRLMODE_FD |
|
|
|
+ CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY,
|
|
|
+ .clock = {
|
|
|
+ .freq = PCAN_UFD_CRYSTAL_HZ,
|
|
|
+ },
|
|
|
+ .bittiming_const = {
|
|
|
+ .name = "pcan_usb_fd",
|
|
|
+ .tseg1_min = 1,
|
|
|
+ .tseg1_max = 64,
|
|
|
+ .tseg2_min = 1,
|
|
|
+ .tseg2_max = 16,
|
|
|
+ .sjw_max = 16,
|
|
|
+ .brp_min = 1,
|
|
|
+ .brp_max = 1024,
|
|
|
+ .brp_inc = 1,
|
|
|
+ },
|
|
|
+ .data_bittiming_const = {
|
|
|
+ .name = "pcan_usb_fd",
|
|
|
+ .tseg1_min = 1,
|
|
|
+ .tseg1_max = 16,
|
|
|
+ .tseg2_min = 1,
|
|
|
+ .tseg2_max = 8,
|
|
|
+ .sjw_max = 4,
|
|
|
+ .brp_min = 1,
|
|
|
+ .brp_max = 1024,
|
|
|
+ .brp_inc = 1,
|
|
|
+ },
|
|
|
+
|
|
|
+ /* size of device private data */
|
|
|
+ .sizeof_dev_private = sizeof(struct pcan_usb_fd_device),
|
|
|
+
|
|
|
+ /* timestamps usage */
|
|
|
+ .ts_used_bits = 32,
|
|
|
+ .ts_period = 1000000, /* calibration period in ts. */
|
|
|
+ .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */
|
|
|
+ .us_per_ts_shift = 0,
|
|
|
+
|
|
|
+ /* give here messages in/out endpoints */
|
|
|
+ .ep_msg_in = PCAN_USBPRO_EP_MSGIN,
|
|
|
+ .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0},
|
|
|
+
|
|
|
+ /* size of rx/tx usb buffers */
|
|
|
+ .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE,
|
|
|
+ .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE,
|
|
|
+
|
|
|
+ /* device callbacks */
|
|
|
+ .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */
|
|
|
+ .dev_init = pcan_usb_fd_init,
|
|
|
+
|
|
|
+ .dev_exit = pcan_usb_fd_exit,
|
|
|
+ .dev_free = pcan_usb_fd_free,
|
|
|
+ .dev_set_bus = pcan_usb_fd_set_bus,
|
|
|
+ .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow,
|
|
|
+ .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast,
|
|
|
+ .dev_decode_buf = pcan_usb_fd_decode_buf,
|
|
|
+ .dev_start = pcan_usb_fd_start,
|
|
|
+ .dev_stop = pcan_usb_fd_stop,
|
|
|
+ .dev_restart_async = pcan_usb_fd_restart_async,
|
|
|
+ .dev_encode_msg = pcan_usb_fd_encode_msg,
|
|
|
+
|
|
|
+ .do_get_berr_counter = pcan_usb_fd_get_berr_counter,
|
|
|
+};
|
|
|
+
|
|
|
+/* describes the PCAN-USB Pro FD adapter */
|
|
|
+const struct peak_usb_adapter pcan_usb_pro_fd = {
|
|
|
+ .name = "PCAN-USB Pro FD",
|
|
|
+ .device_id = PCAN_USBPROFD_PRODUCT_ID,
|
|
|
+ .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT,
|
|
|
+ .ctrlmode_supported = CAN_CTRLMODE_FD |
|
|
|
+ CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY,
|
|
|
+ .clock = {
|
|
|
+ .freq = PCAN_UFD_CRYSTAL_HZ,
|
|
|
+ },
|
|
|
+ .bittiming_const = {
|
|
|
+ .name = "pcan_usb_pro_fd",
|
|
|
+ .tseg1_min = 1,
|
|
|
+ .tseg1_max = 64,
|
|
|
+ .tseg2_min = 1,
|
|
|
+ .tseg2_max = 16,
|
|
|
+ .sjw_max = 16,
|
|
|
+ .brp_min = 1,
|
|
|
+ .brp_max = 1024,
|
|
|
+ .brp_inc = 1,
|
|
|
+ },
|
|
|
+ .data_bittiming_const = {
|
|
|
+ .name = "pcan_usb_pro_fd",
|
|
|
+ .tseg1_min = 1,
|
|
|
+ .tseg1_max = 16,
|
|
|
+ .tseg2_min = 1,
|
|
|
+ .tseg2_max = 8,
|
|
|
+ .sjw_max = 4,
|
|
|
+ .brp_min = 1,
|
|
|
+ .brp_max = 1024,
|
|
|
+ .brp_inc = 1,
|
|
|
+ },
|
|
|
+
|
|
|
+ /* size of device private data */
|
|
|
+ .sizeof_dev_private = sizeof(struct pcan_usb_fd_device),
|
|
|
+
|
|
|
+ /* timestamps usage */
|
|
|
+ .ts_used_bits = 32,
|
|
|
+ .ts_period = 1000000, /* calibration period in ts. */
|
|
|
+ .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */
|
|
|
+ .us_per_ts_shift = 0,
|
|
|
+
|
|
|
+ /* give here messages in/out endpoints */
|
|
|
+ .ep_msg_in = PCAN_USBPRO_EP_MSGIN,
|
|
|
+ .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1},
|
|
|
+
|
|
|
+ /* size of rx/tx usb buffers */
|
|
|
+ .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE,
|
|
|
+ .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE,
|
|
|
+
|
|
|
+ /* device callbacks */
|
|
|
+ .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */
|
|
|
+ .dev_init = pcan_usb_fd_init,
|
|
|
+
|
|
|
+ .dev_exit = pcan_usb_fd_exit,
|
|
|
+ .dev_free = pcan_usb_fd_free,
|
|
|
+ .dev_set_bus = pcan_usb_fd_set_bus,
|
|
|
+ .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow,
|
|
|
+ .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast,
|
|
|
+ .dev_decode_buf = pcan_usb_fd_decode_buf,
|
|
|
+ .dev_start = pcan_usb_fd_start,
|
|
|
+ .dev_stop = pcan_usb_fd_stop,
|
|
|
+ .dev_restart_async = pcan_usb_fd_restart_async,
|
|
|
+ .dev_encode_msg = pcan_usb_fd_encode_msg,
|
|
|
+
|
|
|
+ .do_get_berr_counter = pcan_usb_fd_get_berr_counter,
|
|
|
+};
|
David S. Miller