1 /* 2 pci_dev_name.c 3 */ 4 5 #include "pci.h" 6 #include "syslib.h" 7 #include <minix/sysutil.h> 8 9 /*===========================================================================* 10 * pci_dev_name * 11 *===========================================================================*/ 12 char *pci_dev_name(u16_t vid, u16_t did) 13 { 14 static char name[80]; /* We need a better interface for this */ 15 16 int r; 17 cp_grant_id_t gid; 18 message m; 19 20 gid= cpf_grant_direct(pci_procnr, (vir_bytes)name, sizeof(name), 21 CPF_WRITE); 22 if (gid == -1) 23 { 24 printf("pci_dev_name: cpf_grant_direct failed: %d\n", 25 errno); 26 return NULL; 27 } 28 29 m.m_type= BUSC_PCI_DEV_NAME_S; 30 m.m7_i1= vid; 31 m.m7_i2= did; 32 m.m7_i3= sizeof(name); 33 m.m7_i4= gid; 34 35 r= ipc_sendrec(pci_procnr, &m); 36 cpf_revoke(gid); 37 if (r != 0) 38 panic("pci_dev_name: can't talk to PCI: %d", r); 39 40 if (m.m_type == ENOENT) 41 { 42 #if DEBUG 43 printf("pci_dev_name: got no name\n"); 44 #endif 45 return NULL; /* No name for this device */ 46 } 47 if (m.m_type != 0) 48 panic("pci_dev_name: got bad reply from PCI: %d", m.m_type); 49 50 name[sizeof(name)-1]= '\0'; /* Make sure that the string is NUL 51 * terminated. 52 */ 53 54 #if DEBUG 55 printf("pci_dev_name: got name %s\n", name); 56 #endif 57 return name; 58 } 59 60