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/* aim104.c * Linux serial-bus device driver. * Written by wang song yue email:wsy5228@sina.com * This software is released under the GPL-License. * Version 0.1 28 october 2005 */ #include#if defined (CONFIG_MODVERSIONS) && !defined (MODVERSIONS) #define MODVERSIONS #endif #if defined (MODVERSIONS) #include #endif #include #include #include #include #include "../include/main.h" #include "../include/aim104.h" /* * 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 16c554 chips in basic serial mode. */ #define IO_RANGE 0x08 /* static unsigned long cana_address; static unsigned long cana_data; int getpar(void) { if (check_mem_region(0x31E00000,100)) { printk("can :memory alrready in use\n"); return -EBUSY;} if (check_mem_region(0x31E40000,100)) { printk("can :memory alrready in use\n"); return -EBUSY;} if (!(request_mem_region(0x31E00000,100,"can"))) { printk("request_mem_region error\n"); return -EBUSY; } if (!(request_mem_region(0x31E40000,100,"can"))) { printk("request_mem_region error\n"); return -EBUSY; } printk("request phy_mem is ok!\n"); cana_address=(unsigned long)ioremap(0x31e00000,100); cana_data=(unsigned long)ioremap(0x31E40000,100); printk("get par tmp-cana_address=0x%lx,tmp1-canna_data=0x%lx\n",cana_address,cana_data); return 0; } */ /** * template_request_io: - reserve io memory * @io_addr: The reserved memory starts at @io_addr, wich is the module * parameter @io. * * The function template_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. * %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. * Return Value: The function returns zero on success or %-ENODEV on failure * File: src/template.c */ int aim104_request_io(unsigned long io_addr) { // getpar( ); if (check_region(io_addr,IO_RANGE)) { CANMSG("Unable to open port: 0x%lx\n",io_addr); return -ENODEV; } else { request_region(io_addr,IO_RANGE,DEVICE_NAME); DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr, io_addr + IO_RANGE - 1); } return 0; } /** * template_release_io - free reserved io-memory * @io_addr: Start of the memory range to be released. * * The function template_release_io() is used to free reserved io-memory. * In case you have reserved more io memory, don't forget to free it here. * IO_RANGE is the io-memory range that gets released, 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. * Return Value: The function always returns zero * File: src/template.c */ int aim104_release_io(unsigned long io_addr) { printk("aim104_release_io\n"); release_region(io_addr,IO_RANGE); // iounmap((void*)cana_address); // iounmap((void*)cana_data); // release_mem_region(0x31e00000,100); // release_mem_region(0x31e40000,100); return 0; } /** * template_reset - hardware reset routine * @card: Number of the hardware card. * * The function template_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/template.c */ int aim104_reset(int card) { int i=0; int j=card; j=j*8; DEBUGMSG("Resetting aim104 hardware ......\n"); __raw_writel(0x0000ffff,0xff08000c); //set the cs3 __raw_writel(0x02f4e39e,0xff930020); // __raw_writeb(0x80,0xffd00003); // udelay(20000); //for(i=0;i<16;i++){ // __raw_writeb(j+1,0xffd0000b); // printk("%x Lcr===========0x%x\n",j,__raw_readb(0xffd0000b)); //printk("01Lcr===========0x%x\n",__raw_readb(0xffd00003)); //udelay(20000);} // __raw_writel(0x80,0xffb00003); //for(i=0;i<16;i++){ // __raw_writeb(0x00,0xffd00001); //printk("Lsb===========0x%x\n",__raw_readb(0xffd00000)); //printk("01Msb===========0x%x\n",__raw_readb(0xffd00001)); //udelay(20000);} // __raw_writeb(0x03,0xffd00003); // __raw_writeb(0x00,0xffd00001); // __raw_writeb(0x03,0xffd00004); //printk("01interrupt===========0x%x\n",__raw_readb(0xffb00001)); //printk("05===========0x%x\n",__raw_readb(0xffb00005)); //while(1){ //while((__raw_readb(0xffd00005)&0x20)==0){;}//printk("05=============0x%x\n",__raw_readb(0xffd00005));} // __raw_writeb(0x55,0xffd00000); //udelay(20000); __raw_writeb(0x00,0xffd00003+j); __raw_writeb(0x00,0xffd00001+j); //forbidden any interrupt!!!!!!! udelay(100); /* Check hardware reset status chip 0 */ while ((__raw_readb(0xffd00001+j)&(0x00)) && (i<=15) ) { udelay(20000); i++; } if (i>=15) { CANMSG("Reset status timeout!\n"); CANMSG("Please check your hardware.\n"); return -ENODEV; } else DEBUGMSG("Chip reset status ok.\n"); return 0; } #define RESET_ADDR 0x0 //#define NR_82527 0 //#define NR_SJA1000 1 /** * template_init_hw_data - Initialze hardware cards * @card: Number of the hardware card. * * The function template_init_hw_data() is used to initialize the hardware * structure containing information about the installed CAN-board. * %RESET_ADDR represents the io-address of the hardware reset register. * %NR_82527 represents the number of intel 82527 chips on the board. * %NR_SJA1000 represents the number of philips sja1000 chips on the board. * The flags entry can currently only be %PROGRAMMABLE_IRQ to indicate that * the hardware uses programmable interrupts. * Return Value: The function always returns zero * File: src/template.c */ int aim104_init_hw_data(int card) { candevices_p[card]->res_addr=RESET_ADDR; candevices_p[card]->nr_16c554_chips=1; candevices_p[card]->flags |= ~PROGRAMMABLE_IRQ; return 0; } #define CHIP_TYPE "16c554" /** * template_init_chip_data - Initialize chips * @card: Number of the hardware card * @chipnr: Number of the CAN chip on the hardware card * * The function template_init_chip_data() is used to initialize the hardware * structure containing information about the CAN chips. * %CHIP_TYPE represents the type of CAN chip. %CHIP_TYPE can be "i82527" or * "sja1000". * The @chip_base_addr entry represents the start of the 'official' memory map * of the installed chip. It's likely that this is the same as the @io_addr * argument supplied at module loading time. * The @clock entry holds the chip clock value in Hz. * The entry @sja_cdr_reg holds hardware specific options for the Clock Divider * register. Options defined in the %sja1000.h file: * %CDR_CLKOUT_MASK, %CDR_CLK_OFF, %CDR_RXINPEN, %CDR_CBP, %CDR_PELICAN * The entry @sja_ocr_reg holds hardware specific options for the Output Control * register. Options defined in the %sja1000.h file: * %OCR_MODE_BIPHASE, %OCR_MODE_TEST, %OCR_MODE_NORMAL, %OCR_MODE_CLOCK, * %OCR_TX0_LH, %OCR_TX1_ZZ. * 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 * Configuration register. Options defined in the %i82527.h file: * %iBUS_DR0, %iBUS_DR1, %iBUS_DT1, %iBUS_POL, %iBUS_CBY. * Return Value: The function always returns zero * File: src/template.c */ int aim104_init_chip_data(int card, int chipnr) { candevices_p[card]->chip[chipnr]->chip_type=CHIP_TYPE; candevices_p[card]->chip[chipnr]->chip_base_addr=io[card]; // wangsy: candevices_p[card]->io_addr; candevices_p[card]->chip[chipnr]->clock = 1843200; candevices_p[card]->chip[chipnr]->flags = 0; candevices_p[card]->chip[chipnr]->c554_ier_reg = 0x0f; //all intrupt on!! candevices_p[card]->chip[chipnr]->c554_fcr_reg = 0xc7; //FCR return 0; } /** * template_init_obj_data - Initialize message buffers * @chipnr: Number of the CAN chip * @objnr: Number of the message buffer * * The function template_init_obj_data() is used to initialize the hardware * structure containing information about the different message objects on the * 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 * 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. * Return Value: The function always returns zero * File: src/template.c */ int aim104_init_obj_data(int chipnr, int objnr) { chips_p[chipnr]->msgobj[objnr]->obj_base_addr=chips_p[chipnr]->chip_base_addr; chips_p[chipnr]->msgobj[objnr]->flags=0; // printk("obj_base_addr=0x%x\n", chips_p[chipnr]->msgobj[objnr]->obj_base_addr); return 0; } /** * template_program_irq - program interrupts * @card: Number of the hardware card. * * The function template_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 %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/template.c */ int aim104_program_irq(int card) { return 0; } /** * template_write_register - Low level write register routine * @data: data to be written * @address: memory address to write to * * The function template_write_register() is used to write to hardware registers * on the CAN chip. You should only have to edit this function if your hardware * uses some specific write process. * Return Value: The function does not return a value * File: src/template.c */ void aim104_write_register(unsigned char data, unsigned long address) { //printk("aim104_writer_register!tts_io_address======0x%x\n",tts_io_addr); __raw_writeb(data,(tts_io_addr+address)); } /** * template_read_register - Low level read register routine * @address: memory address to read from * * The function template_read_register() is used to read from hardware registers * on the CAN chip. You should only have to edit this function if your hardware * uses some specific read process. * Return Value: The function returns the value stored in @address * File: src/template.c */ unsigned aim104_read_register(unsigned long address) { return __raw_readb(tts_io_addr+address); } /* !!! Don't change this function !!! */ int aim104_register(struct hwspecops_t *hwspecops) { hwspecops->request_io = aim104_request_io; hwspecops->release_io = aim104_release_io; hwspecops->reset = aim104_reset; hwspecops->init_hw_data = aim104_init_hw_data; hwspecops->init_chip_data = aim104_init_chip_data; hwspecops->init_obj_data = aim104_init_obj_data; hwspecops->write_register = aim104_write_register; hwspecops->read_register = aim104_read_register; hwspecops->program_irq = aim104_program_irq; return 0; }