// gcc -c pcitest.c -Wall -Wstrict-prototypes -O

#define MODULE
#define __KERNEL__

#include <linux/autoconf.h>
#if defined(CONFIG_MODVERSIONS) && !defined(MODVERSIONS)
# define MODVERSIONS
#endif
#ifdef MODVERSIONS
# include <linux/modversions.h>
#endif

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/pci.h>

#undef L24
//#define L24

static int vendorid=0x8086;  // 適宜
static int deviceid=0x1229;
#if LINUX_VERSION_CODE > 0x20115
MODULE_PARM(vendorid, "i");
MODULE_PARM(deviceid, "i");
#endif

int init_module(void)
{
  int i,j;
  struct pci_dev *pdev=NULL;

  for(i=0;;i++) {
    pdev=pci_find_device(vendorid,deviceid,pdev);
    if(!pdev)
      break; //   これ以上ドライバ見つからず
    printk("pcitest: found device(%04X,%04X,%d) on"
	   "   Bus:%d  Device:%d Function:%d\n",
	   vendorid,deviceid,i,
	   pdev->bus->number,pdev->devfn>>3,pdev->devfn&0x7);
    for(j=0;j<6;j++) {
#ifdef L24
      unsigned long start=pci_resource_start(pdev,j);
      unsigned long flags=pci_resource_flags(pdev,j);
      if(flags & IORESOURCE_IO) {
	printk("pcitest: found base(%d) I/O address: "
	       "%04lX\n",j,start);
      }
      if(flags & IORESOURCE_MEM) {
	printk("pcitest: found base(%d) Mem address: "
	       "%08lX\n",j,start);
      }
#else
      unsigned long baseaddr=pdev->base_address[j];
      if((baseaddr&PCI_BASE_ADDRESS_SPACE)==
	 PCI_BASE_ADDRESS_SPACE_IO) {
	printk("pcitest: found base(%d) I/O address: ",j);
	printk("%04lX\n",baseaddr&PCI_BASE_ADDRESS_IO_MASK);
      } else {
	printk("pcitest: found base(%d) Mem address: ",j);
	printk("%08lX\n",baseaddr&PCI_BASE_ADDRESS_MEM_MASK);
      }
#endif
    }
    printk("pcitest: found IRQ %d\n",pdev->irq);
  }
  if(i==0) { 
    printk("There is no device vendor:%04X device:%04X\n",
	   vendorid,deviceid); 
  }
  return 1;  // insmod がこけるように
}

void cleanup_module(void)
{
}