1*433d6423SLionel Sambuc /*
2*433d6423SLionel Sambuc pci_find_dev.c
3*433d6423SLionel Sambuc */
4*433d6423SLionel Sambuc
5*433d6423SLionel Sambuc #include "pci.h"
6*433d6423SLionel Sambuc #include "syslib.h"
7*433d6423SLionel Sambuc #include <minix/sysutil.h>
8*433d6423SLionel Sambuc
9*433d6423SLionel Sambuc /*===========================================================================*
10*433d6423SLionel Sambuc * pci_find_dev *
11*433d6423SLionel Sambuc *===========================================================================*/
pci_find_dev(u8_t bus,u8_t dev,u8_t func,int * devindp)12*433d6423SLionel Sambuc int pci_find_dev(u8_t bus, u8_t dev, u8_t func, int *devindp)
13*433d6423SLionel Sambuc {
14*433d6423SLionel Sambuc int r;
15*433d6423SLionel Sambuc message m;
16*433d6423SLionel Sambuc
17*433d6423SLionel Sambuc m.m_type= BUSC_PCI_FIND_DEV;
18*433d6423SLionel Sambuc m.m1_i1= bus;
19*433d6423SLionel Sambuc m.m1_i2= dev;
20*433d6423SLionel Sambuc m.m1_i3= func;
21*433d6423SLionel Sambuc
22*433d6423SLionel Sambuc r= ipc_sendrec(pci_procnr, &m);
23*433d6423SLionel Sambuc if (r != 0)
24*433d6423SLionel Sambuc panic("pci_find_dev: can't talk to PCI: %d", r);
25*433d6423SLionel Sambuc
26*433d6423SLionel Sambuc if (m.m_type == 1)
27*433d6423SLionel Sambuc {
28*433d6423SLionel Sambuc *devindp= m.m1_i1;
29*433d6423SLionel Sambuc printf("pci_find_dev: got device %d for %d.%d.%d\n",
30*433d6423SLionel Sambuc *devindp, bus, dev, func);
31*433d6423SLionel Sambuc return 1;
32*433d6423SLionel Sambuc }
33*433d6423SLionel Sambuc if (m.m_type != 0)
34*433d6423SLionel Sambuc panic("pci_find_dev: got bad reply from PCI: %d", m.m_type);
35*433d6423SLionel Sambuc
36*433d6423SLionel Sambuc printf("pci_find_dev: got nothing\n");
37*433d6423SLionel Sambuc return 0;
38*433d6423SLionel Sambuc }
39*433d6423SLionel Sambuc
40