/*
* pcmu_init_child
*
* This function is called from our control ops routine on a
* DDI_CTLOPS_INITCHILD request. It builds and sets the device's
* parent private data area.
*
* used by: pcmu_ctlops()
*
* return value: none
*/
int
pcmu_init_child(pcmu_t *pcmu_p, dev_info_t *child)
{
char name[10];
ddi_acc_handle_t config_handle;
uint8_t bcr;
uint8_t header_type;
if (name_child(child, name, 10) != DDI_SUCCESS)
return (DDI_FAILURE);
ddi_set_name_addr(child, name);
PCMU_DBG2(PCMU_DBG_PWR, ddi_get_parent(child),
"INITCHILD: config regs setup for %s@%s\n",
ddi_node_name(child), ddi_get_name_addr(child));
/*
* Map the child configuration space to for initialization.
* We assume the obp will do the following in the devices
* config space:
*
* Set the latency-timer register to values appropriate
* for the devices on the bus (based on other devices
* MIN_GNT and MAX_LAT registers.
*
* Set the fast back-to-back enable bit in the command
* register if it's supported and all devices on the bus
* have the capability.
*
*/
if (pci_config_setup(child, &config_handle) != DDI_SUCCESS) {
ddi_set_name_addr(child, NULL);
return (DDI_FAILURE);
}
/*
* Determine the configuration header type.
*/
header_type = pci_config_get8(config_handle, PCI_CONF_HEADER);
PCMU_DBG2(PCMU_DBG_INIT_CLD, pcmu_p->pcmu_dip, "%s: header_type=%x\n",
ddi_driver_name(child), header_type);
/*
* If the device has a bus control register then program it
* based on the settings in the command register.
*/
if ((header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) {
bcr = pci_config_get8(config_handle, PCI_BCNF_BCNTRL);
if (pcmu_command_default & PCI_COMM_PARITY_DETECT)
bcr |= PCI_BCNF_BCNTRL_PARITY_ENABLE;
if (pcmu_command_default & PCI_COMM_SERR_ENABLE)
bcr |= PCI_BCNF_BCNTRL_SERR_ENABLE;
bcr |= PCI_BCNF_BCNTRL_MAST_AB_MODE;
pci_config_put8(config_handle, PCI_BCNF_BCNTRL, bcr);
}
pci_config_teardown(&config_handle);
return (DDI_SUCCESS);
}
static int
init_child(dev_info_t *child)
{
char name[MAXNAMELEN];
(void) name_child(child, name, MAXNAMELEN);
ddi_set_name_addr(child, name);
if ((ndi_dev_is_persistent_node(child) == 0) &&
(ndi_merge_node(child, name_child) == DDI_SUCCESS)) {
impl_ddi_sunbus_removechild(child);
return (DDI_FAILURE);
}
return (DDI_SUCCESS);
}