minix/lib/syslib/pci_first_dev.c

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/*
pci_first_dev.c
*/
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#include "pci.h"
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#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;
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r= sendrec(pci_procnr, &m);
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if (r != 0)
panic("syslib/" __FILE__, "pci_first_dev: can't talk to PCI", r);
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if (m.m_type == 1)
{
*devindp= m.m1_i1;
*vidp= m.m1_i2;
*didp= m.m1_i3;
#if DEBUG
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printf("pci_first_dev: got device %d, %04x/%04x\n",
*devindp, *vidp, *didp);
#endif
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return 1;
}
if (m.m_type != 0)
panic("syslib/" __FILE__, "pci_first_dev: got bad reply from PCI", m.m_type);
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#if DEBUG
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printf("pci_first_dev: got nothing\n");
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#endif
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return 0;
}