[Linux-IrDA] smc-ircc

[Graeme Pyle]

Hi Jeff,

I also had some strange problems with smc-ircc. After modprobing it, I
get


Apr 16 08:36:12 pickelbum kernel: SMC IrDA Controller found
Apr 16 08:36:12 pickelbum kernel:  IrCC version 2.0, firport 0xe38,
sirport 0x300 dma=2, irq=3

Doing an "ifconfig up irda0" crashes my machine.


Under Windows, SIR port is 0x3e8 and FIR is 0x100.

I wrote some code to dump the configuration (using the PDF's on SMC's
website). They might help you too.

Let me know if you have any success,

Graeme

#include <stdio.h>
#include <sys/io.h>

main() {

  unsigned short cfg_base=0xe0;

  unsigned short fir_io;
  unsigned short sir_io;
  unsigned short irq;
  unsigned short dma;

  unsigned short fir_msb;
  unsigned short fir_lsb;

  unsigned short sir_msb;
  unsigned short sir_lsb;

  unsigned short mode;
  unsigned short options;
  unsigned short duplex;
  unsigned short a;
  unsigned short b;



  // Need permission to go poking around
  ioperm(cfg_base,8,1);

  
  /* Enter configuration */
  outb(0x55, cfg_base);


  /* Select logical device (UART2) */
  outb(0x07, cfg_base);
  outb(0x05, cfg_base + 1);
		
  /* Read SIR io */
  outb(0x60, cfg_base);
  sir_io  = inb(cfg_base + 1) << 8;
  outb(0x61, cfg_base);
  sir_io |= inb(cfg_base + 1);
		
  /* Read FIR io */
  outb(0x62, cfg_base);
  fir_msb = inb(cfg_base + 1);
  fir_io =  fir_msb << 8;

  outb(0x63, cfg_base);
  fir_lsb = inb(cfg_base + 1);
  fir_io |= fir_lsb;

  // IRQ
  outb(0x70, cfg_base);
  irq = inb(cfg_base + 1);
  
  // DMA
  outb(0x74, cfg_base);
  dma = inb(cfg_base + 1);

  // mode
  outb(0xF0, cfg_base);
  mode = inb(cfg_base + 1);

  // options
  outb(0xF1, cfg_base);
  options = inb(cfg_base + 1);

  // duplex
  outb(0xF2, cfg_base);
  duplex = inb(cfg_base + 1);

  // a
  outb(0xF7, cfg_base);
  a = inb(cfg_base + 1);

  // b
  outb(0xF8, cfg_base);
  b = inb(cfg_base + 1);


  /* Exit configuration */
  outb(0xaa, cfg_base);



  printf("firport 0x%03x, sirport 0x%03x, irq %d, dma %d\n",fir_io,sir_io,irq,dma);

  printf("mode 0x%02x\n",mode);
  printf("options 0x%02x\n",options);
  printf("duplex 0x%02x\n",duplex);
  printf("a 0x%02x\n",a);
  printf("b 0x%02x\n",b);



}

#include <stdio.h>
#include <stdlib.h>
#include <sys/io.h>
#include <linux/types.h>


main(int argc, char** argv) {

  unsigned short cfg_base=0xe0;

  //unsigned short mode=0x46;

  

  // Need permission to go poking around
  ioperm(cfg_base,8,1);

  
  /* Enter configuration */
  outb(0x55, cfg_base);


  /* Select logical device (UART2) */
  outb(0x07, cfg_base);
  outb(0x05, cfg_base + 1);
		




  // Write DMA
  //outb(0xF1, cfg_base);
  //outb(mode, cfg_base + 1);


  unsigned short fir_io;
  unsigned short sir_io;
  unsigned short fir_msb;
  unsigned short fir_lsb;
  unsigned short sir_msb;
  unsigned short sir_lsb;
  unsigned short irq;
  unsigned short dma;




  //fir_io=0xe38;
  //sir_io=0x3e8;
  fir_io=0xe30;
  sir_io=0x3e8;
  irq=3;
  dma=2;


  fir_msb=fir_io>>8;
  fir_lsb=fir_io&255;

  sir_msb=sir_io>>8;
  sir_lsb=sir_io&255;

  printf("firport 0x%03x, sirport 0x%03x\n",fir_io,sir_io);

  printf("firport MSB = %03x\n",fir_msb);
  printf("firport LSB = %03x\n",fir_lsb);

  printf("sirport MSB = %03x\n",sir_msb);
  printf("sirport LSB = %03x\n",sir_lsb);


  /* Write SIR base */
  //printf("writing sirport msb\n");
  //outb(0x60, cfg_base);
  //outb(sir_msb, cfg_base + 1);
  //printf("writing sirport lsb\n");
  //outb(0x61, cfg_base);
  //outb(sir_lsb, cfg_base + 1);
		
  printf("writing firport\n");

  /* Write FIR base */
  //outb(0x62, cfg_base);
  //outb(fir_msb, cfg_base + 1);

  //outb(0x63, cfg_base);
  //outb(fir_lsb, cfg_base + 1);


  // Write IRQ
  //outb(0x70, cfg_base);
  //outb(irq, cfg_base + 1);
  
  // Write DMA
  //outb(0x74, cfg_base);
  //outb(dma, cfg_base + 1);

  // Write options
  outb(0x74, cfg_base);
  outb(0x4, cfg_base + 1);









  /* Exit configuration */
  outb(0xaa, cfg_base);


  return 0;






}