X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/6a69270d58163ab6cf749b1fc5c4dd6d0d08ff49..HEAD:/lincan/src/eb8245.c diff --git a/lincan/src/eb8245.c b/lincan/src/eb8245.c index 0e9e783..b59babc 100644 --- a/lincan/src/eb8245.c +++ b/lincan/src/eb8245.c @@ -1,17 +1,42 @@ -/* eb8245.c - * Linux CAN-bus device 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: eb8245.c - Kontron EB8245 onboard CAN with SJA1000 controller */ +/* */ +/* LinCAN - (Not only) Linux CAN bus driver */ +/* Copyright (C) 2002-2009 DCE FEE CTU Prague */ +/* Copyright (C) 2002-2009 Pavel Pisa */ +/* Copyright (C) 2005 Petr Cvachoucek, Unicontrols */ +/* 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 "../include/can.h" #include "../include/can_sysdep.h" #include "../include/main.h" #include "../include/eb8245.h" -#include "../include/i82527.h" #include "../include/sja1000p.h" /* @@ -28,7 +53,7 @@ * * The function eb8245_request_io() is used to reserve the io-memory. If your * hardware uses a dedicated memory range as hardware control registers you - * will have to add the code to reserve this memory as well. + * will have to add the code to reserve this memory as well. * %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. @@ -37,17 +62,17 @@ */ int eb8245_request_io(struct candevice_t *candev) { - int remap_addr; - + can_ioptr_t remap_addr; + if (!can_request_mem_region(candev->io_addr,IO_RANGE,DEVICE_NAME " - eb8245")) { CANMSG("Unable to request IO-memory: 0x%lx\n",candev->io_addr); return -ENODEV; } - if ( !( remap_addr = (long) ioremap( candev->io_addr, IO_RANGE ) ) ) { + if ( !( remap_addr = ioremap( candev->io_addr, IO_RANGE ) ) ) { CANMSG("Unable to access I/O memory at: 0x%lx\n", candev->io_addr); can_release_mem_region(candev->io_addr,IO_RANGE); return -ENODEV; - + } can_base_addr_fixup(candev, remap_addr); DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", candev->io_addr, candev->io_addr + IO_RANGE - 1); @@ -79,8 +104,8 @@ int eb8245_release_io(struct candevice_t *candev) * eb8245_reset - hardware reset routine * @candev: Pointer to candevice/board structure * - * The function eb8245_reset() is used to give a hardware reset. This is - * rather hardware specific so I haven't included example code. Don't forget to + * The function eb8245_reset() is used to give a hardware reset. This is + * rather hardware specific so I haven't included example code. Don't forget to * check the reset status of the chip before returning. * Return Value: The function returns zero on success or %-ENODEV on failure * File: src/eb8245.c @@ -90,10 +115,10 @@ int eb8245_reset(struct candevice_t *candev) int i; struct canchip_t *chip=candev->chip[0]; unsigned cdr; - + eb8245_write_register(sjaMOD_RM, chip->chip_base_addr+SJAMOD); udelay(1000); - + cdr=eb8245_read_register(chip->chip_base_addr+SJACDR); eb8245_write_register(cdr|sjaCDR_PELICAN, chip->chip_base_addr+SJACDR); @@ -111,7 +136,7 @@ int eb8245_reset(struct candevice_t *candev) eb8245_write_register(cdr|sjaCDR_PELICAN, chip->chip_base_addr+SJACDR); eb8245_write_register(0, chip->chip_base_addr+SJAIER); - + return 0; } @@ -133,7 +158,7 @@ int eb8245_reset(struct candevice_t *candev) * Return Value: The function always returns zero * File: src/eb8245.c */ -int eb8245_init_hw_data(struct candevice_t *candev) +int eb8245_init_hw_data(struct candevice_t *candev) { candev->res_addr=RESET_ADDR; candev->nr_82527_chips=0; @@ -167,7 +192,7 @@ int eb8245_init_hw_data(struct candevice_t *candev) * The entry @int_clk_reg holds hardware specific options for the Clock Out * register. Options defined in the %i82527.h file: * %iCLK_CD0, %iCLK_CD1, %iCLK_CD2, %iCLK_CD3, %iCLK_SL0, %iCLK_SL1. - * The entry @int_bus_reg holds hardware specific options for the Bus + * The entry @int_bus_reg holds hardware specific options for the Bus * Configuration register. Options defined in the %i82527.h file: * %iBUS_DR0, %iBUS_DR1, %iBUS_DT1, %iBUS_POL, %iBUS_CBY. * The entry @int_cpu_reg holds hardware specific options for the cpu interface @@ -201,7 +226,7 @@ int eb8245_init_chip_data(struct candevice_t *candev, int chipnr) * CAN chip. In case of the sja1000 there's only one message object but on the * i82527 chip there are 15. * The code below is for a i82527 chip and initializes the object base addresses - * The entry @obj_base_addr represents the first memory address of the message + * The entry @obj_base_addr represents the first memory address of the message * object. In case of the sja1000 @obj_base_addr is taken the same as the chips * base address. * Unless the hardware uses a segmented memory map, flags can be set zero. @@ -218,10 +243,10 @@ int eb8245_init_obj_data(struct canchip_t *chip, int objnr) * eb8245_program_irq - program interrupts * @candev: Pointer to candevice/board structure * - * The function eb8245_program_irq() is used for hardware that uses + * The function eb8245_program_irq() is used for hardware that uses * programmable interrupts. If your hardware doesn't use programmable interrupts - * you should not set the @candevices_t->flags entry to %CANDEV_PROGRAMMABLE_IRQ and - * leave this function unedited. Again this function is hardware specific so + * you should not set the @candevices_t->flags entry to %CANDEV_PROGRAMMABLE_IRQ and + * leave this function unedited. Again this function is hardware specific so * there's no example code. * Return value: The function returns zero on success or %-ENODEV on failure * File: src/eb8245.c @@ -242,11 +267,11 @@ int eb8245_program_irq(struct candevice_t *candev) * Return Value: The function does not return a value * File: src/eb8245.c */ -void eb8245_write_register(unsigned data, unsigned long address) +void eb8245_write_register(unsigned data, can_ioptr_t address) { /*DEBUGMSG("eb8245_write_register: addr=0x%lx data=0x%x", address,data);*/ - writeb(data,address); + can_writeb(data,address); } /** @@ -259,9 +284,9 @@ void eb8245_write_register(unsigned data, unsigned long address) * Return Value: The function returns the value stored in @address * File: src/eb8245.c */ -unsigned eb8245_read_register(unsigned long address) +unsigned eb8245_read_register(can_ioptr_t address) { - return readb(address); + return can_readb(address); } /* !!! Don't change this function !!! */