minix/lib/libsys/pci_first_dev.c

43 lines
855 B
C
Raw Normal View History

2005-12-02 15:41:46 +01:00
/*
pci_first_dev.c
*/
2006-02-15 15:21:56 +01:00
#include "pci.h"
2005-12-02 15:41:46 +01:00
#include "syslib.h"
#include <minix/sysutil.h>
/*===========================================================================*
* pci_first_dev *
*===========================================================================*/
2012-03-25 20:25:53 +02:00
int pci_first_dev(devindp, vidp, didp)
2005-12-02 15:41:46 +01:00
int *devindp;
u16_t *vidp;
u16_t *didp;
{
int r;
message m;
m.m_type= BUSC_PCI_FIRST_DEV;
2006-02-15 15:21:56 +01:00
r= sendrec(pci_procnr, &m);
2005-12-02 15:41:46 +01:00
if (r != 0)
panic("pci_first_dev: can't talk to PCI: %d", r);
2005-12-02 15:41:46 +01:00
if (m.m_type == 1)
{
*devindp= m.m1_i1;
*vidp= m.m1_i2;
*didp= m.m1_i3;
#if DEBUG
2005-12-02 15:41:46 +01:00
printf("pci_first_dev: got device %d, %04x/%04x\n",
*devindp, *vidp, *didp);
#endif
2005-12-02 15:41:46 +01:00
return 1;
}
if (m.m_type != 0)
panic("pci_first_dev: got bad reply from PCI: %d", m.m_type);
2005-12-02 15:41:46 +01:00
2006-01-18 10:47:22 +01:00
#if DEBUG
2005-12-02 15:41:46 +01:00
printf("pci_first_dev: got nothing\n");
2006-01-18 10:47:22 +01:00
#endif
2005-12-02 15:41:46 +01:00
return 0;
}