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

/*
pci_find_dev.c
*/

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

/*===========================================================================*
 *                              pci_find_dev                                 *
 *===========================================================================*/
PUBLIC int pci_find_dev(bus, dev, func, devindp)
u8_t bus;
u8_t dev;
u8_t func;
int *devindp;
{
        int r;
        message m;

        m.m_type= BUSC_PCI_FIND_DEV;
        m.m1_i1= bus;
        m.m1_i2= dev;
        m.m1_i3= func;

        r= sendrec(pci_procnr, &m);
        if (r != 0)
                panic("pci", "pci_find_dev: can't talk to PCI", r);

        if (m.m_type == 1)
        {
                *devindp= m.m1_i1;
                printf("pci_find_dev: got device %d for %d.%d.%d\n",
                        *devindp, bus, dev, func);
                return 1;
        }
        if (m.m_type != 0)
                panic("pci", "pci_find_dev: got bad reply from PCI", m.m_type);

        printf("pci_find_dev: got nothing\n");
        return 0;
}