61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
/*
|
|
pci_dev_name.c
|
|
*/
|
|
|
|
#include "pci.h"
|
|
#include "syslib.h"
|
|
#include <minix/sysutil.h>
|
|
|
|
/*===========================================================================*
|
|
* pci_dev_name *
|
|
*===========================================================================*/
|
|
PUBLIC char *pci_dev_name(vid, did)
|
|
u16_t vid;
|
|
u16_t did;
|
|
{
|
|
static char name[PCIINFO_ENTRY_SIZE]; /* We need a better interface for this */
|
|
|
|
int r;
|
|
cp_grant_id_t gid;
|
|
message m;
|
|
|
|
gid= cpf_grant_direct(pci_procnr, (vir_bytes)name, sizeof(name),
|
|
CPF_WRITE);
|
|
if (gid == -1)
|
|
{
|
|
printf("pci_dev_name: cpf_grant_direct failed: %d\n",
|
|
errno);
|
|
return NULL;
|
|
}
|
|
|
|
m.m_type= BUSC_PCI_DEV_NAME_S;
|
|
m.m7_i1= vid;
|
|
m.m7_i2= did;
|
|
m.m7_i3= sizeof(name);
|
|
m.m7_i4= gid;
|
|
|
|
r= sendrec(pci_procnr, &m);
|
|
cpf_revoke(gid);
|
|
if (r != 0)
|
|
panic("syslib/" __FILE__, "pci_dev_name: can't talk to PCI", r);
|
|
|
|
if (m.m_type == ENOENT)
|
|
{
|
|
#if DEBUG
|
|
printf("pci_dev_name: got no name\n");
|
|
#endif
|
|
return NULL; /* No name for this device */
|
|
}
|
|
if (m.m_type != 0)
|
|
panic("syslib/" __FILE__, "pci_dev_name: got bad reply from PCI", m.m_type);
|
|
|
|
name[sizeof(name)-1]= '\0'; /* Make sure that the string is NUL
|
|
* terminated.
|
|
*/
|
|
|
|
#if DEBUG
|
|
printf("pci_dev_name: got name %s\n", name);
|
|
#endif
|
|
return name;
|
|
}
|
|
|