source: trunk/minix/lib/syslib/pci_first_dev.c@ 15

/*
pci_first_dev.c
*/

#include "pci.h"
#include "syslib.h"
#include <minix/sysutil.h>

/*===========================================================================*
 *                              pci_first_dev                                *
 *===========================================================================*/
PUBLIC int pci_first_dev(devindp, vidp, didp)
int *devindp;
u16_t *vidp;
u16_t *didp;
{
        int r;
        message m;

        m.m_type= BUSC_PCI_FIRST_DEV;
        r= sendrec(pci_procnr, &m);
        if (r != 0)
                panic("pci", "pci_first_dev: can't talk to PCI", r);
        if (m.m_type == 1)
        {
                *devindp= m.m1_i1;
                *vidp= m.m1_i2;
                *didp= m.m1_i3;
#if DEBUG
                printf("pci_first_dev: got device %d, %04x/%04x\n", 
                        *devindp, *vidp, *didp);
#endif
                return 1;
        }
        if (m.m_type != 0)
                panic("pci", "pci_first_dev: got bad reply from PCI", m.m_type);

#if DEBUG
        printf("pci_first_dev: got nothing\n");
#endif
        return 0;
}