/*
* Overwrite weak is_pci_host()
*
* This routine is called to determine if a pci scan should be
* performed. With various hardware environments (especially cPCI and
* PPMC) it's insufficient to depend on the state of the arbiter enable
* bit in the strap register, or generic host/adapter assumptions.
*
* Return 0 for adapter mode, non-zero for host (monarch) mode.
*/
int is_pci_host(struct pci_controller *hose)
{
char *s;
if (!is_monarch()) {
/*
* Overwrite PCI identification when running in
* non-monarch mode
* This should be moved into pci_target_init()
* when it is sometimes available for 405 CPUs
*/
pci_write_config_word(PCIDEVID_405GP,
PCI_SUBSYSTEM_ID,
CONFIG_SYS_PCI_SUBSYS_ID_NONMONARCH);
pci_write_config_word(PCIDEVID_405GP,
PCI_CLASS_SUB_CODE,
CONFIG_SYS_PCI_CLASSCODE_NONMONARCH);
}
s = getenv("pciscan");
if (s == NULL) {
if (is_monarch()) {
wait_for_pci_ready();
return 1;
} else {
return 0;
}
} else {
if (!strcmp(s, "yes"))
return 1;
}
return 0;
}
int is_pci_host(struct pci_controller *hose)
{
if (is_monarch()) {
wait_for_pci_ready();
return 1; /* return 1 for host controller */
} else {
return 0; /* return 0 for adapter controller */
}
}
int is_pci_host(struct pci_controller *hose)
{
wait_for_pci_ready();
return 1; /* return 1 for host controller */
}