minix/lib/syslib/pci_set_acl.c

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/*
pci_set_acl.c
*/
#include "pci.h"
#include "syslib.h"
#include <minix/rs.h>
#include <minix/sysutil.h>
/*===========================================================================*
* pci_set_acl *
*===========================================================================*/
PUBLIC int pci_set_acl(rs_pci)
struct rs_pci *rs_pci;
{
int r;
cp_grant_id_t gid;
message m;
if (pci_procnr == ANY)
{
r= _pm_findproc("pci", &pci_procnr);
if (r != 0)
{
panic("pci",
"pci_set_acl: _pm_findproc failed for 'pci'",
r);
}
}
printf("pci_set_acl: before cpf_grant_direct\n");
gid= cpf_grant_direct(pci_procnr, (vir_bytes)rs_pci, sizeof(*rs_pci),
CPF_READ);
printf("pci_set_acl: after cpf_grant_direct: gid %d\n", gid);
if (gid == -1)
{
printf("pci_set_acl: cpf_grant_direct failed: %d\n",
errno);
return EINVAL;
}
m.m_type= BUSC_PCI_ACL;
m.m1_i1= gid;
printf("pci_set_acl: before sendrec to %d\n", pci_procnr);
r= sendrec(pci_procnr, &m);
printf("pci_set_acl: after sendrec to %d\n", pci_procnr);
cpf_revoke(gid);
printf("pci_set_acl: after cpf_revoke\n");
if (r != 0)
panic("pci", "pci_set_acl: can't talk to PCI", r);
return r;
}