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#include <u.h>
#include <libc.h>
#include "dat.h"
#include "fns.h"
static Pcidev *devs;
Pcidev*
pciopen(int bdf)
{
char path[64];
Pcidev *pci;
for(pci = devs; pci != nil; pci = pci->next){
if(pci->bdf == bdf){
if(pci->fd < 0)
return nil;
return pci;
}
}
pci = malloc(sizeof(Pcidev));
pci->bdf = bdf;
snprint(path, sizeof(path), "#$/pci/%d.%d.%draw",
BDFBNO(bdf), BDFDNO(bdf), BDFFNO(bdf));
pci->fd = open(path, ORDWR);
pci->next = devs;
devs = pci;
return pci;
}
int
pcicfgr(Pcidev *pci, void *data, int len, int addr)
{
return pread(pci->fd, data, len, addr);
}
int
pcicfgw(Pcidev *pci, void *data, int len, int addr)
{
return pwrite(pci->fd, data, len, addr);
}
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