* Version lincan-0.3 17 Jul 2008
*/
+#ifndef USBCAN_H
+#define USBCAN_H
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/kref.h>
+#include <asm/uaccess.h>
+#include <linux/usb.h>
+#include <linux/mutex.h>
+
+#include "../include/kthread.h"
+
+/* our private defines. if this grows any larger, use your own .h file */
+#define MAX_TRANSFER (PAGE_SIZE - 512)
+/* MAX_TRANSFER is chosen so that the VM is not stressed by
+ allocations > PAGE_SIZE and the number of packets in a page
+ is an integer 512 is the largest possible packet on EHCI */
+#define WRITES_IN_FLIGHT 8
+/* arbitrarily chosen */
+
+/* Define these values to match your devices */
+#define USBCAN_VENDOR_ID 0xDEAD
+#define USBCAN_PRODUCT_ID 0x1001
+
+#define RESET_ADDR 0x0
+
+/*
+ * IO_RANGE is the io-memory range that gets reserved, please adjust according
+ * your hardware. Example: #define IO_RANGE 0x100 for i82527 chips or
+ * #define IO_RANGE 0x20 for sja1000 chips in basic CAN mode.
+ */
+#define IO_RANGE 0x100
+
+
int usbcan_request_io(struct candevice_t *candev);
int usbcan_release_io(struct candevice_t *candev);
int usbcan_reset(struct candevice_t *candev);
void usbcan_write_register(unsigned data, unsigned long address);
unsigned usbcan_read_register(unsigned long address);
int usbcan_program_irq(struct candevice_t *candev);
+int usbcan_register(struct hwspecops_t *hwspecops);
int usbcan_chip_config(struct canchip_t *chip);
int usbcan_extended_mask(struct canchip_t *chip, unsigned long code, unsigned long mask);
int usbcan_fill_chipspecops(struct canchip_t *chip);
int usbcan_irq_handler(int irq, struct canchip_t *chip);
+int usbcan_init(void);
+void usbcan_exit(void);
+
+int usbcan_read_kthread(void *data);
+int usbcan_chip_queue_status(struct canchip_t *chip);
+
+#ifdef CONFIG_OC_LINCAN_DETAILED_ERRORS
+
+// static const char *sja1000_ecc_errc_str[]={
+// "bit error",
+// "form error",
+// "stuff error",
+// "other type of error"
+// };
+//
+// static const char *sja1000_ecc_seg_str[]={
+// "?0?",
+// "?1?",
+// "ID.28 to ID.21",
+// "start of frame",
+// "bit SRTR",
+// "bit IDE",
+// "ID.20 to ID.18",
+// "ID.17 to ID.13",
+// "CRC sequence",
+// "reserved bit 0",
+// "data field",
+// "data length code",
+// "bit RTR",
+// "reserved bit 1",
+// "ID.4 to ID.0",
+// "ID.12 to ID.5",
+// "?16?"
+// "active error flag",
+// "intermission",
+// "tolerate dominant bits",
+// "?20?",
+// "?21?",
+// "passive error flag",
+// "error delimiter",
+// "CRC delimiter",
+// "acknowledge slot",
+// "end of frame",
+// "acknowledge delimiter",
+// "overload flag",
+// "?29?",
+// "?30?",
+// "?31?"
+// };
+
+#endif /*CONFIG_OC_LINCAN_DETAILED_ERRORS*/
+
+struct usbcan_message {
+ struct urb *u;
+ u8 msg[16];
+ spinlock_t acc; /* access lock */
+ long flags;
+};
+
+#define USBCAN_MESSAGE_FREE (1)
+#define USBCAN_MESSAGE_READY_TO_SEND (2)
+#define USBCAN_MESSAGE_SENDING (3)
+#define USBCAN_MESSAGE_TERMINATE (4)
+#define USBCAN_MESSAGE_ERROR (5)
+#define USBCAN_MESSAGE_DATA_READ (6)
+
+#define USBCAN_TOT_RX_URBS 8
+#define USBCAN_TOT_TX_URBS 8
+
+/* Structure to hold all of our device specific stuff */
+struct usbcan_usb {
+ struct usb_device *udev; /* the usb device for this device */
+ struct usb_interface *interface; /* the interface for this device */
+ struct semaphore limit_sem; /* limiting the number of writes in progress */
+ struct usb_anchor submitted; /* in case we need to retract our submissions */
+ unsigned char *bulk_in_buffer; /* the buffer to receive data */
+ unsigned char *ctl_in_buffer; /* the buffer to receive data */
+ size_t bulk_in_size; /* the size of the receive buffer */
+ size_t ctl_in_size; /* the size of the receive buffer */
+ u8 ctl_in_endpointAddr; /* the address of the bulk in endpoint */
+ u8 ctl_out_endpointAddr; /* the address of the bulk in endpoint */
+ u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */
+ u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */
+ int errors; /* the last request tanked */
+ int open_count; /* count the number of openers */
+ spinlock_t err_lock; /* lock for errors */
+ struct mutex io_mutex; /* synchronize I/O with disconnect */
+ struct urb *rx;
+ struct urb *tx;
+ u8 rx_msg[16];
+ u8 tx_msg[16];
+
+ struct task_struct *comthread; /* usb communication kernel thread */
+
+
+ struct candevice_t *candev;
+ long flags;
+};
+
+#define USBCAN_DATA_READ (1)
+#define USBCAN_TERMINATE (2)
+#define USBCAN_ERROR (3)
+#define USBCAN_TX_PENDING (4)
+
+#define USBCAN_VENDOR_BAUD_RATE_SET (1)
+#define USBCAN_VENDOR_BAUD_RATE_STATUS (2)
+#define USBCAN_VENDOR_SET_BTREGS (3)
+#define USBCAN_VENDOR_CHECK_TX_STAT (4)
+#define USBCAN_VENDOR_START_CHIP (5)
+#define USBCAN_VENDOR_STOP_CHIP (6)
+#define USBCAN_VENDOR_EXT_MASK_SET (7)
+#define USBCAN_VENDOR_EXT_MASK_STATUS (8)
+
+#endif /*USBCAN_H*/
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