int __init device_init(struct dt_device_node *dev, enum device_type type,
const void *data)
{
const struct device_desc *desc;
ASSERT(dev != NULL);
if ( !dt_device_is_available(dev) )
return -ENODEV;
for ( desc = _sdevice; desc != _edevice; desc++ )
{
if ( desc->type != type )
continue;
if ( device_is_compatible(desc, dev) )
{
ASSERT(desc->init != NULL);
return desc->init(dev, data);
}
}
return -EBADF;
}
/*
* Xen does not currently support mapping MMIO regions and interrupt
* for bus child devices (referenced via the "ranges" and
* "interrupt-map" properties to domain 0). Instead for now map the
* necessary resources manually.
*/
static int xgene_storm_specific_mapping(struct domain *d)
{
struct dt_device_node *node = NULL;
int ret;
while ( (node = dt_find_compatible_node(node, "pci", "apm,xgene-pcie")) )
{
u64 addr;
/* Identify the bus via it's control register address */
ret = dt_device_get_address(node, 0, &addr, NULL);
if ( ret < 0 )
return ret;
if ( !dt_device_is_available(node) )
continue;
switch ( addr )
{
case 0x1f2b0000: /* PCIe0 */
ret = xgene_storm_pcie_specific_mapping(d,
node,
0x0e000000000UL, 0x10000000000UL, 0xc2);
break;
case 0x1f2c0000: /* PCIe1 */
ret = xgene_storm_pcie_specific_mapping(d,
node,
0x0d000000000UL, 0x0e000000000UL, 0xc8);
break;
case 0x1f2d0000: /* PCIe2 */
ret = xgene_storm_pcie_specific_mapping(d,
node,
0x09000000000UL, 0x0a000000000UL, 0xce);
break;
case 0x1f500000: /* PCIe3 */
ret = xgene_storm_pcie_specific_mapping(d,
node,
0x0a000000000UL, 0x0c000000000UL, 0xd4);
break;
case 0x1f510000: /* PCIe4 */
ret = xgene_storm_pcie_specific_mapping(d,
node,
0x0c000000000UL, 0x0d000000000UL, 0xda);
break;
default:
printk("Ignoring unknown PCI bus %s\n", dt_node_full_name(node));
continue;
}
if ( ret < 0 )
return ret;
}
return 0;
}