diff -r 7d124bfba3ce -r 60435f959e5c rs232dbg/aip_com.c --- a/rs232dbg/aip_com.c Fri Dec 02 11:37:40 2005 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,847 +0,0 @@ -/** rt_com - * ====== - * - * RT-Linux kernel module for communication across serial lines. - * - * Copyright (C) 1997 Jens Michaelsen - * Copyright (C) 1997-2000 Jochen Kupper - * Copyright (C) 1999 Hua Mao - * Copyright (C) 1999 Roberto Finazzi - * Copyright (C) 2000-2002 Giuseppe Renoldi - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program 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 this program; see the file License. if not, write to the - * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307, USA. - * - * $Id: aip_com.c,v 1.1 2005/09/16 14:16:31 hm Exp hm $ */ -#define VERSION "0.6.pre2-rtaicvs (modified by Hm, IgH for aip)" //Hm, IgH - -#include -#include -#include -#include -#include -#include - -#include -#include - -#ifdef _RTAI -#include -#endif - -#include "aip_com.h" -#include "aip_comP.h" - -/* Hm, IgH -MODULE_AUTHOR("Jochen Kuepper"); -MODULE_DESCRIPTION("real-time serial port driver"); -MODULE_LICENSE("GPL"); -*/ - - -/* size of internal queues -* This is the default value. */ -unsigned int rt_com_buffersize = RT_COM_BUF_SIZ; - -/** Default: mode=0 - no hw flow control - * used=0 - port and irq setting by rt_com_hwparam. - * If you want to work like - * a standard rt_com you can set used=1. */ -struct rt_com_struct rt_com_table[] = { - { // ttyS0 - COM1 - RT_COM_BASE_BAUD, // int baud_base; - 0x3f8, // int port; - 4, // int irq; - rt_com0_isr, // void (*isr)(void); - 115200, // int baud; - 8, // unsigned int wordlength; - RT_COM_PARITY_NONE, // unsigned int parity; - 1, // stopbits; - RT_COM_NO_HAND_SHAKE, // int mode; - RT_COM_FIFO_SIZE_8, // int fifotrig; - 1 //Hm, IgH // int used; - }, { // ttyS1 - COM2 - RT_COM_BASE_BAUD, // int baud_base; - 0x2f8, // int port; - 3, // int irq; - rt_com1_isr, // void (*isr)(void); - 0, // int baud; - 8, // unsigned int wordlength; - RT_COM_PARITY_NONE, // unsigned int parity; - 1, // stopbits; - RT_COM_NO_HAND_SHAKE, // int mode; - RT_COM_FIFO_SIZE_8, // int fifotrig; - 0 // int used; - } -}; - -/** Number and descriptions of serial ports to manage. You also need - * to create an ISR ( rt_comN_isr() ) for each port. */ -#define RT_COM_CNT (sizeof(rt_com_table) / sizeof(struct rt_com_struct)) - -/** Internal: Remaining free space of buffer - * - * @return amount of free space remaining in a buffer (input or output) - * - * @author Jochen Kupper - * @version 2000/03/10 */ -static inline unsigned int rt_com_buffer_free(unsigned int head, unsigned int tail) -{ - return(head < tail) ? (tail - head) : (rt_com_buffersize - (head - tail)); -} - -/** Clear input buffer. - * - * @param ttyS Port to use; corresponding to internal numbering scheme. - * @return 0 if all right, -ENODEV or -EPERM on error. - * - * @author Roberto Finazzi, Jochen Kupper - * @version 2000/03/12 */ -int rt_com_clear_input(unsigned int ttyS) -{ - if (ttyS >= RT_COM_CNT) { - return(-ENODEV); - } - else if (0 >= (rt_com_table[ttyS]).used) { - return(-EPERM); - } - else { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - struct rt_buf_struct *b = &(p->ibuf); - long state; - rt_com_irq_off(state); - b->tail = b->head; - if (p->fifotrig) - outb(inb(p->port + RT_COM_FCR) | FCR_INPUT_FIFO_RESET, p->port + RT_COM_FCR); - rt_com_irq_on(state); - if (p->mode & RT_COM_HW_FLOW) { - /* with hardware flow set RTS */ - p->mcr |= MCR_RTS; - outb(p->mcr, p->port + RT_COM_MCR); - } - - return(0); - } -} - -/** Clear output buffer. - * - * @param ttyS Port to use; corresponding to internal numbering scheme. - * @return 0 if all right, negative error conditions otherwise - * - * @author Roberto Finazzi, Jochen Kupper - * @version 2000/03/12 - */ -int rt_com_clear_output(unsigned int ttyS) -{ - if (ttyS >= RT_COM_CNT) { - return(-ENODEV); - } - else { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - if (0 >= (rt_com_table[ttyS]).used) { - return(-EPERM); - } - else { - struct rt_buf_struct *b = &(p->obuf); - long state; - rt_com_irq_off(state); - p->ier &= ~IER_ETBEI; - outb(p->ier, p->port | RT_COM_IER); - b->tail = b->head; - if (p->fifotrig) - outb(inb(p->port + RT_COM_FCR) | FCR_OUTPUT_FIFO_RESET, p->port + RT_COM_FCR); - rt_com_irq_on(state); - return(0); - } - } -} - -/** Set functioning mode. - * - * @param ttyS Port to use; corresponding to internal numbering scheme. - * @param mode functioning mode - * @return 0 if all right, negative on error - * - * @author Roberto Finazzi, Jochen Kupper - * @version 2000/03/12 - */ -int rt_com_set_mode(unsigned int ttyS, int mode) -{ - if (ttyS >= RT_COM_CNT) { - return(-ENODEV); - } - else { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - if (0 >= p->used) { - return(-EPERM); - } - else { - p->mode = mode; - if (p->used & RT_COM_PORT_SETUP) { - /* setup done */ - if (mode == RT_COM_NO_HAND_SHAKE) { - /* if no hw signals disable modem interrupts */ - p->ier &= ~IER_EDSSI; - } - else { - /* else enable it */ - p->ier |= IER_EDSSI; - } - - outb(p->ier, p->port + RT_COM_IER); - } - - return(0); - } - } -} - -/** Set receiver fifo trigger level. - * - * @param ttyS Port to use; corresponding to internal numbering scheme. - * @param fifotrig receiver fifo trigger level - * @return 0 if all right, negative on error - * - * @author Roberto Finazzi, Jochen Kupper - * @version 2000/03/12 - */ -int rt_com_set_fifotrig(unsigned int ttyS, int fifotrig) -{ - if (ttyS >= RT_COM_CNT) { - return(-ENODEV); - } - else { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - p->fifotrig = fifotrig; - if (p->used & RT_COM_PORT_SETUP) { - /* setup done */ - if (p->fifotrig) - outb(FCR_FIFO_ENABLE | p->fifotrig, p->port + RT_COM_FCR); // enable fifo - else - outb(0, p->port + RT_COM_FCR); // disable fifo - } - } - - return(0); -} - -/** Set output signal for modem control (DTR, RTS). - * - * @param ttyS Port to use; corresponding to internal numbering scheme. - * @param signal Output signals: RT_COM_DTR or RT_COM_RTS. - * @param value Status: 0 or 1. - * @return 0 if all right, negative error code otherwise - * - * @author Roberto Finazzi, Jochen Kupper - * @version 2000/03/12 */ -int rt_com_write_modem(unsigned int ttyS, int signal, int value) -{ - if (ttyS >= RT_COM_CNT) { - return(-ENODEV); - } - else if (value &~0x01) { - return(-EINVAL); - } - else { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - if (0 >= p->used) { - return(-EPERM); - } - else { - if (value) - p->mcr |= signal; - else - p->mcr &= ~signal; - outb(p->mcr, p->port + RT_COM_MCR); - return(0); - } - } -} - -/** Read input signal from modem (CTS, DSR, RI, DCD). - * - * @param ttyS Port to use; corresponding to internal numbering scheme. - * @param signal Input signals: RT_COM_CTS, RT_COM_DSR, RT_COM_RI, RT_COM_DCD - * or any combination. - * @return input signal status; that is the bitwise-OR of the signal - * argument and the MSR register. - * - * @author Roberto Finazzi, Jochen Kupper - * @version 2000/03/12 */ -int rt_com_read_modem(unsigned int ttyS, int signal) -{ - if (ttyS >= RT_COM_CNT) { - return(-ENODEV); - } - else if (signal & 0xf) { - return(-EINVAL); - } - else { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - if (0 >= p->used) { - return(-EPERM); - } - else { - return(inb(p->port + RT_COM_MSR) & signal); - } - } -} - -/** Return last error detected. - * - * @param ttyS Port to use; corresponding to internal numbering scheme. - * @return bit 0 :1 = Input buffer overflow - * bit 1 :1 = Receive data overrun - * bit 2 :1 = Parity error - * bit 3 :1 = Framing error - * bit 4 :1 = Break detected - * - * @author Roberto Finazzi - * @version 2000/03/12 - */ -int rt_com_error(unsigned int ttyS) -{ - if (ttyS >= RT_COM_CNT) { - return(-ENODEV); - } - else { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - int tmp = p->error; - p->error = 0; - return(tmp); - } -} - -/** Write data to a line. - * - * @param ttyS Port to use; corresponding to internal numbering scheme. - * @param buffer Address of data. - * @param count Number of bytes to write. If negative, send byte only if - * possible to send them all together. - * @return Number of bytes not written. Negative values are error - * conditions. - * - * @author Jens Michaelsen, Jochen Kupper, Giuseppe Renoldi - * @version 2000/03/12 */ -int rt_com_write(unsigned int ttyS, char *buffer, int count) -{ - if (ttyS >= RT_COM_CNT) { - return(-ENODEV); - } - else { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - if (!(p->used & RT_COM_PORT_SETUP)) { - return(-EPERM); - } - else { - struct rt_buf_struct *b = &(p->obuf); - long state; - int bytestosend; - if (count == 0) - return(0); - bytestosend = rt_com_buffer_free(b->head, b->tail); - if (count < 0) { - count = -count; - if (count > bytestosend) - return(count); - bytestosend = count; - } - else { - if (count <= bytestosend) - bytestosend = count; - } - - rt_com_irq_off(state); - while (bytestosend-- > 0) { - /* put byte into buffer, move pointers to next elements */ - b->buf[b->head++] = *buffer++; - if (b->head >= rt_com_buffersize) - b->head = 0; - --count; - } - - p->ier |= IER_ETBEI; - outb(p->ier, p->port + RT_COM_IER); - rt_com_irq_on(state); - return(count); - } - } -} - -/** Read data we got from a line. - * - * @param ttyS Port to use corresponding to internal numbering scheme. - * @param buffer Address of data buffer. Needs to be of size > cnt ! - * @param count Number of bytes to read. - * @return Number of bytes actually read. - * - * @author Jens Michaelsen, Jochen Kupper - * @version 2000/03/17 */ -int rt_com_read(unsigned int ttyS, char *buffer, int count) -{ - if (0 > count) { - return(-EINVAL); - } - else if (ttyS >= RT_COM_CNT) { - return(-ENODEV); - } - else { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - if (!(p->used & RT_COM_PORT_SETUP)) { - return(-EPERM); - } - else { - struct rt_buf_struct *b = &(p->ibuf); - int done = 0; - long state; - rt_com_irq_off(state); - while ((b->head != b->tail) && (--count >= 0)) { - done++; - *buffer++ = b->buf[b->tail++]; - b->tail &= (RT_COM_BUF_SIZ - 1); - } - - rt_com_irq_on(state); - if ((p->mode & RT_COM_HW_FLOW) && (rt_com_buffer_free(b->head, b->tail) > RT_COM_BUF_HI)) { - /* if hardware flow and enough free space on input buffer - then set RTS */ - p->mcr |= MCR_RTS; - outb(p->mcr, p->port + RT_COM_MCR); - } - - return(done); - } - } -} - -/** Get first byte from the write buffer. - * - * @param p rt_com_struct of the line we are writing to. - * @param c Address to put the char in. - * @return Number of characters we actually got. - * - * @author Jens Michaelsen, Jochen Kupper - * @version 1999/10/01 - */ -static inline int rt_com_irq_get(struct rt_com_struct *p, unsigned char *c) -{ - struct rt_buf_struct *b = &(p->obuf); - if (b->head != b->tail) { - *c = b->buf[b->tail++]; - b->tail &= (RT_COM_BUF_SIZ - 1); - return(1); - } - - return(0); -} - -/** Concatenate a byte to the read buffer. - * - * @param p rt_com_struct of the line we are writing to. - * @param ch Byte to put into buffer. - * - * @author Jens Michaelsen, Jochen Kupper - * @version 1999/07/20 */ -static inline void rt_com_irq_put(struct rt_com_struct *p, unsigned char ch) -{ - struct rt_buf_struct *b = &(p->ibuf); - b->buf[b->head++] = ch; - b->head &= (RT_COM_BUF_SIZ - 1); -} - -/** Real interrupt handler. - * - * This one is called by the registered ISRs and does the actual work. - * - * @param ttyS Port to use corresponding to internal numbering scheme. - * - * @author Jens Michaelsen, Jochen Kupper, Hua Mao, Roberto Finazzi - * @version 2000/03/17 */ -static inline int rt_com_isr(unsigned int ttyS) -{ - struct rt_com_struct *p = &(rt_com_table[ttyS]); - struct rt_buf_struct *b = &(p->ibuf); - unsigned int base = p->port; - int buff, data_to_tx; - int loop = 4; - int toFifo = 16; - unsigned char data, msr, lsr, iir; - - do { - //iir=inb(base + RT_COM_IIR); - //rt_printk("iir=0x%02x\n",iir); - /* get available data from port */ - lsr = inb(base + RT_COM_LSR); - if (0x1e & lsr) - p->error = lsr & 0x1e; - while (LSR_DATA_READY & lsr) { - data = inb(base + RT_COM_RXB); - - //rt_printk("[%02x<- ",data); - rt_com_irq_put(p, data); - lsr = inb(base + RT_COM_LSR); - if (0x1e & lsr) - p->error = 0x1e & lsr; - } - - /* controls on buffer full and RTS clear on hardware flow - control */ - buff = rt_com_buffer_free(b->head, b->tail); - if (buff < RT_COM_BUF_FULL) - p->error = RT_COM_BUFFER_FULL; - - if ((p->mode & RT_COM_HW_FLOW) && (buff < RT_COM_BUF_LOW)) { - p->mcr &= ~MCR_RTS; - outb(p->mcr, p->port + RT_COM_MCR); - } - - /* if possible, put data to port */ - msr = inb(base + RT_COM_MSR); - if - ( - (p->mode == RT_COM_NO_HAND_SHAKE) || - ((p->mode & RT_COM_DSR_ON_TX) && (MSR_DSR & msr) && (p->mode & RT_COM_HW_FLOW) && (MSR_CTS & msr)) - ) { - /* (DSR && (CTS || Mode==no hw flow)) or Mode==no handshake */ - // if (THRE==1) i.e. transmitter empty - if ((lsr = inb(base + RT_COM_LSR)) & LSR_THRE) { - // if there are data to transmit - if ((data_to_tx = rt_com_irq_get(p, &data)) != 0) { - do { - //rt_printk("->%02x] ",data); - outb(data, base + RT_COM_TXB); - } while ((--toFifo > 0) && (data_to_tx = rt_com_irq_get(p, &data) != 0)); - } - - if (!data_to_tx) { - /* no data in output buffer, disable Transmitter - Holding Register Empty Interrupt */ - p->ier &= ~IER_ETBEI; - outb(p->ier, base + RT_COM_IER); - } - } - } - - /* check the low nibble of IIR wheather there is another pending - interrupt. bit 0 = 0 if interrupt pending, bits 1,2,3 - are the interrupt ID */ - iir = inb(base + RT_COM_IIR); - } while (((iir & 0x0F) != 1) && (--loop > 0)); - -#if defined RTLINUX_V2 - rtl_hard_enable_irq(p->irq); -#endif - return 0; -} - -/** Interrupt Service Routines - * - * These are the Interrupt Service Routines to be registered with the - * OS. They simply call the genereric interrupt handler for the - * current port to do the work. - * - * @author Jens Michaelsen, Jochen Kupper, Hua Mao - * @version 1999/11/11 */ -static void rt_com0_isr(void) -{ - //rt_printk("rt_com0_isr\n"); - rt_com_isr(0); -} - -static void rt_com1_isr(void) -{ - //rt_printk("rt_com1_isr\n"); - rt_com_isr(1); -} - -/** Setup one port - * - * Calls from init_module + cleanup_module have baud == 0; in these - * cases we only do some cleanup. - * - * To allocate a port, give usefull setup parameter, to deallocate - * give negative baud. - * - * @param ttyS Number corresponding to internal port numbering scheme. - * This is esp. the index of the rt_com_table to use. - * @param baud Data transmission rate to use [Byte/s]. If negative, - * deallocate port instead. Called with baud == 0 from - * init_module for basic initialization. Needs to be called - * by user-task again before use ! - * @param mode see rt_com_set_mode docs for now - * @param parity Parity for transmission protocol. - * (RT_COM_PARITY_EVEN, RT_COM_PARITY_ODD, RT_COM_PARITY_NONE) - * @param stopbits Number of stopbits to use. 1 gives you one stopbit, 2 - * actually gives really two stopbits for wordlengths of - * 6 - 8 bit, but 1.5 stopbits for a wordlength of 5 bits. - * @param wordlength Number of bits per word (5 - 8 bits). - * @param fifotrig if <0 set trigger fifo using default value set - * in rt_com_table[], otherwise set trigger fifo accordingly - * to the parameter - * @return 0 - all right - * -ENODEV - no entry for that ttyS in rt_com_table - * -EPERM - get hardware resources first (the port needs to - * be setup hardware-wise first, that means you have - * to specify a positive used flag at compile time - * or call rt_com_set_hwparm first.) - * - * @author Jens Michaelsen, Jochen Kupper, Roberto Finazzi - * @version 2000/03/12 */ -int rt_com_setup -( - unsigned int ttyS, - int baud, - int mode, - unsigned int parity, - unsigned int stopbits, - unsigned int wordlength, - int fifotrig -) -{ - if (ttyS >= RT_COM_CNT) { - return(-ENODEV); - } - else { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - if (0 == p->used) { - /* */ - return(-EPERM); - } - else { - unsigned int base = p->port; - - /* Stop everything, set DLAB */ - outb(0x00, base + RT_COM_IER); - outb(0x80, base + RT_COM_LCR); - - /* clear irqs */ - inb(base + RT_COM_IIR); - inb(base + RT_COM_LSR); - inb(base + RT_COM_RXB); - inb(base + RT_COM_MSR); - - /* initialize error code */ - p->error = 0; - - /* if 0 == baud, nothing else to do ! */ - if (baud == 0) - return(0); - - if (0 > baud) { - /* free the port */ - /* disable interrupts */ - outb(0, base + RT_COM_IER); - //MOD_DEC_USE_COUNT; Hm, IgH - return(0); - } - else { - /* allocate and set-up the port */ - unsigned int divider = p->baud_base / baud; - - //MOD_INC_USE_COUNT; Hm, IgH - - /* set transfer rate */ - outb(divider % 256, base + RT_COM_DLL); - outb(divider / 256, base + RT_COM_DLM); - - /* bits 3,4 + 5 determine parity, mask away anything else */ - parity &= 0x38; - - /* set transmission parameters and clear DLAB */ - outb((wordlength - 5) | ((stopbits - 1) << 2) | parity, base + RT_COM_LCR); - - /* set-up MCR value and write it */ - p->mcr = MCR_DTR | MCR_RTS | MCR_OUT1 | MCR_OUT2; - outb(p->mcr, base + RT_COM_MCR); - - /* set-up IER value and write it */ - p->mode = mode; - if (p->mode == RT_COM_NO_HAND_SHAKE) { - /* if no handshaking signals enable only receiver interrupts */ - p->ier = IER_ERBI | IER_ELSI; - } - else { - /* enable receiver and modem interrupts */ - p->ier = IER_ERBI | IER_ELSI | IER_EDSSI; - } - - outb(p->ier, base + RT_COM_IER); - if (fifotrig>=0) - p->fifotrig = fifotrig; - outb(FCR_FIFO_ENABLE | p->fifotrig, base + RT_COM_FCR); // enable fifo - /* mark setup done */ - p->used |= RT_COM_PORT_SETUP; - return(0); - } - } - - return(0); - } -} - -/** Set hardware parameter for a specific port. - * - * Change port address and irq setting for a specified port. The port - * must have an entry in rt_com_table beforehand. - * - * To allow the specification of additional ports we would need to - * dynamically allocate memory, that's not really feasible within a - * real-time context, although we could preallocate a few entries in - * init_module. However, it doesn't make too much sense, as you can - * specify all ports that really exist (in hardware) at compile time - * and enable only these you want to use. - * - * @param ttyS Port to use; corresponding to internal numbering scheme. - * @param port port address, if zero, use standard value from rt_com_table - * @param irq irq address, if zero, use standard value from rt_com_table - * @return 0 everything all right, - * -ENODEV no entry in rt_com_table for that device, - * -EBUSY port-region is used already. - * - * @author Roberto Finazzi, Jochen Kupper - * @version 2000/03/10 */ -int rt_com_hwsetup(unsigned int ttyS, int port, int irq) -{ - if (ttyS < RT_COM_CNT) { - struct rt_com_struct *p = &(rt_com_table[ttyS]); - if (0 == p->used) { - if (0 != port) - p->port = port; - if (0 != irq) - p->irq = irq; - if (-EBUSY == check_region(p->port, 8)) { - return(-EBUSY); - } - - request_region(p->port, 8, RT_COM_NAME); - rt_com_request_irq(p->irq, p->isr); - p->used = 1; - rt_com_setup(ttyS, p->baud, p->mode, p->parity, p->stopbits, p->wordlength, p->fifotrig); - return(0); - } - else { - if (port >= 0) - return(-EBUSY); - rt_com_setup(ttyS, 0, 0, 0, 0, 0, 0); - rt_com_free_irq(p->irq); - release_region(p->port, 8); - p->used = 0; - return(0); - } - } - - return(-ENODEV); -} - -/** Initialization - * - * For all ports that have a used flag greater than 0, request port - * memory and register ISRs. If we cannot get the memory of all these - * ports, release all already requested ports and return an error. - * - * @return Success status, zero on success. With a non-zero return - * value of this routine, insmod will fail to load the module ! - * - * @author Jochen Kupper, Hua Mao, Roberto Finazzi - * @version 2000/03/10 */ -//int init_module(void) //Hm, IgH -int init_aip_com(void) -{ - int errorcode = 0; - unsigned int i, j; - - printk(KERN_INFO "rt_com: Loading real-time serial port driver (version "VERSION ").\n"); - - for (i = 0; i < RT_COM_CNT; i++) { - struct rt_com_struct *p = &(rt_com_table[i]); - - // if used set default values - if (p->used > 0) { - printk(KERN_WARNING "RS232 testing %d\n",i); - if (-EBUSY == check_region(p->port, 8)) { - errorcode = -EBUSY; - printk(KERN_WARNING "rt_com: error %d: cannot request port region %x\n", errorcode, p->port); - break; - } - - request_region(p->port, 8, "rt_com"); - rt_com_request_irq(p->irq, p->isr); - printk(KERN_WARNING "RS232 Request IRQ: %d\n",p->irq); - rt_com_setup(i, p->baud, p->mode, p->parity, p->stopbits, p->wordlength, p->fifotrig); - } - } - - if (0 != errorcode) { - printk(KERN_WARNING "rt_com: giving up.\n"); - for (j = 0; j < i; j++) { - struct rt_com_struct *p = &(rt_com_table[j]); - if (0 < p->used) { - rt_com_free_irq(p->irq); - release_region(p->port, 8); - } - } - } - else { - printk(KERN_INFO "rt_com: sucessfully loaded.\n"); - } - - return(errorcode); -} - -/** Cleanup - * - * Unregister ISR and releases memory for all ports - * - * @author Jochen Kupper - * @version 1999/10/01 */ -//void cleanup_module(void) Hm, IgH -void cleanup_aip_com(void) -{ - unsigned int i; - for (i = 0; i < RT_COM_CNT; i++) { - struct rt_com_struct *p = &(rt_com_table[i]); - if (0 < p->used) { - rt_com_free_irq(p->irq); - rt_com_setup(i, 0, 0, 0, 0, 0, 0); - release_region(p->port, 8); - } - } - - printk(KERN_INFO "rt_com: unloaded.\n"); -} - -/* -EXPORT_SYMBOL(rt_com_buffersize); -EXPORT_SYMBOL(rt_com_clear_input); -EXPORT_SYMBOL(rt_com_clear_output); -EXPORT_SYMBOL(rt_com_error); -EXPORT_SYMBOL(rt_com_hwsetup); -EXPORT_SYMBOL(rt_com_read); -EXPORT_SYMBOL(rt_com_read_modem); -EXPORT_SYMBOL(rt_com_setup); -EXPORT_SYMBOL(rt_com_table); -EXPORT_SYMBOL(rt_com_write); -EXPORT_SYMBOL(rt_com_write_modem); -EXPORT_SYMBOL(rt_com_set_mode); -EXPORT_SYMBOL(rt_com_set_fifotrig); -*/ - -/** - * Local Variables: - * mode: C - * c-file-style: "Stroustrup" - * End: - */