X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/fb1e8444b02cd7ae2536adc1bad79f5e01382767..16e7fc19118a4f24bda40b18eaf03273577c83da:/lincan/include/main.h diff --git a/lincan/include/main.h b/lincan/include/main.h index f360dcf..582d895 100644 --- a/lincan/include/main.h +++ b/lincan/include/main.h @@ -1,11 +1,36 @@ -/* main.h - * Header file for the Linux CAN-bus driver. - * Written by Arnaud Westenberg email:arnaud@wanadoo.nl - * Rewritten for new CAN queues by Pavel Pisa - OCERA team member - * email:pisa@cmp.felk.cvut.cz - * This software is released under the GPL-License. - * Version lincan-0.3 17 Jun 2004 - */ +/**************************************************************************/ +/* File: main.h - the CAN driver basic data structures and functions */ +/* */ +/* LinCAN - (Not only) Linux CAN bus driver */ +/* Copyright (C) 2002-2009 DCE FEE CTU Prague */ +/* Copyright (C) 2002-2009 Pavel Pisa */ +/* Funded by OCERA and FRESCOR IST projects */ +/* Based on CAN driver code by Arnaud Westenberg */ +/* */ +/* LinCAN is free software; you can redistribute it and/or modify it */ +/* under terms of the GNU General Public License as published by the */ +/* Free Software Foundation; either version 2, or (at your option) any */ +/* later version. LinCAN is distributed in the hope that it will be */ +/* useful, but WITHOUT ANY WARRANTY; without even the implied warranty */ +/* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */ +/* General Public License for more details. You should have received a */ +/* copy of the GNU General Public License along with LinCAN; see file */ +/* COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, */ +/* Cambridge, MA 02139, USA. */ +/* */ +/* To allow use of LinCAN in the compact embedded systems firmware */ +/* and RT-executives (RTEMS for example), main authors agree with next */ +/* special exception: */ +/* */ +/* Including LinCAN header files in a file, instantiating LinCAN generics */ +/* or templates, or linking other files with LinCAN objects to produce */ +/* an application image/executable, does not by itself cause the */ +/* resulting application image/executable to be covered by */ +/* the GNU General Public License. */ +/* This exception does not however invalidate any other reasons */ +/* why the executable file might be covered by the GNU Public License. */ +/* Publication of enhanced or derived LinCAN files is required although. */ +/**************************************************************************/ #include "./can.h" #include "./constants.h" @@ -81,6 +106,7 @@ struct candevice_t { int nr_all_chips; int nr_82527_chips; int nr_sja1000_chips; + int nr_mcp2515_chips; can_spinlock_t device_lock; struct canchip_t *chip[MAX_HW_CHIPS]; @@ -88,6 +114,10 @@ struct candevice_t { struct canhardware_t *hosthardware_p; +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10)) + struct kref refcount; +#endif + union { void *anydev; #ifdef CAN_ENABLE_PCI_SUPPORT @@ -163,6 +193,13 @@ struct canchip_t { void (*write_register)(unsigned data, can_ioptr_t address); unsigned (*read_register)(can_ioptr_t address); + /* SPI / mcp2515 specific */ + int (*spi_acquire_bus)(struct candevice_t *candev, short channel, int block); + void (*spi_release_bus)(struct candevice_t *candev, short channel); + int (*spi_transfer)(struct candevice_t *candev, void *tx, void *rx, uint16_t len); + short spi_channel; + + void *chip_data; unsigned short sja_cdr_reg; /* sja1000 only! */ @@ -301,6 +338,14 @@ struct hwspecops_t { int (*program_irq)(struct candevice_t *candev); void (*write_register)(unsigned data, can_ioptr_t address); unsigned (*read_register)(can_ioptr_t address); + int (*spi_acquire_bus)(struct candevice_t *candev, short channel, int block); + void (*spi_release_bus)(struct candevice_t *candev, short channel); + int (*spi_transfer)(struct candevice_t *candev, void *tx, void *rx, uint16_t len); + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10)) + void (*release_device)(struct kref *refcount); +#endif + }; /** @@ -328,6 +373,7 @@ struct hwspecops_t { * @stop_chip: stops chip message processing * @irq_handler: interrupt service routine * @irq_accept: optional fast irq accept routine responsible for blocking further interrupts + * @get_info: retrieve chp-specifc info for display in proc fs */ struct chipspecops_t { int (*chip_config)(struct canchip_t *chip); @@ -360,6 +406,8 @@ struct chipspecops_t { int (*stop_chip)(struct canchip_t *chip); int (*irq_handler)(int irq, struct canchip_t *chip); int (*irq_accept)(int irq, struct canchip_t *chip); + int (*reset_chip)(struct canchip_t *chip); + int (*get_info)(struct canchip_t *chip, char *buf); }; struct mem_addr { @@ -455,6 +503,23 @@ extern inline unsigned can_read_reg(const struct canchip_t *chip, unsigned reg_o return chip->read_register(address_to_read); } +extern inline int can_spi_transfer(struct canchip_t *chip, void *tx, void *rx, uint16_t len) +{ + return chip->spi_transfer(chip->hostdevice, tx, rx, len); +} + +extern inline int can_spi_acquire_bus(struct canchip_t *chip, int block) +{ + return chip->spi_acquire_bus(chip->hostdevice, chip->spi_channel, block); +} + +extern inline void can_spi_release_bus(struct canchip_t *chip) +{ + chip->spi_release_bus(chip->hostdevice, chip->spi_channel); +} + + + extern inline void canobj_write_reg(const struct canchip_t *chip, const struct msgobj_t *obj, unsigned char data, unsigned reg_offs) { @@ -513,5 +578,6 @@ void can_filltimestamp(canmsg_tstamp_t *ptimestamp) extern int can_rtl_priority; #endif /*CAN_WITH_RTL*/ -extern struct candevice_t* register_usbdev(const char *hwname,void *devdata,void (*chipdataregfnc)(struct canchip_t *chip,void *data)); -extern void cleanup_usbdev(struct candevice_t *dev); +extern struct candevice_t* register_hotplug_dev(const char *hwname,int (*chipdataregfnc)(struct canchip_t *chip,void *data),void *devdata); +extern void deregister_hotplug_dev(struct candevice_t *dev); +extern void cleanup_hotplug_dev(struct candevice_t *dev);