diff options
Diffstat (limited to 'hw/pci/pcie_port.c')
| -rw-r--r-- | hw/pci/pcie_port.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/hw/pci/pcie_port.c b/hw/pci/pcie_port.c new file mode 100644 index 00000000..687e4e76 --- /dev/null +++ b/hw/pci/pcie_port.c @@ -0,0 +1,210 @@ +/* + * pcie_port.c + * + * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp> + * VA Linux Systems Japan K.K. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "hw/pci/pcie_port.h" +#include "hw/qdev-properties.h" +#include "qemu/module.h" +#include "hw/hotplug.h" + +void pcie_port_init_reg(PCIDevice *d) +{ + /* Unlike pci bridge, + 66MHz and fast back to back don't apply to pci express port. */ + pci_set_word(d->config + PCI_STATUS, 0); + pci_set_word(d->config + PCI_SEC_STATUS, 0); + + /* + * Unlike conventional pci bridge, for some bits the spec states: + * Does not apply to PCI Express and must be hardwired to 0. + */ + pci_word_test_and_clear_mask(d->wmask + PCI_BRIDGE_CONTROL, + PCI_BRIDGE_CTL_MASTER_ABORT | + PCI_BRIDGE_CTL_FAST_BACK | + PCI_BRIDGE_CTL_DISCARD | + PCI_BRIDGE_CTL_SEC_DISCARD | + PCI_BRIDGE_CTL_DISCARD_STATUS | + PCI_BRIDGE_CTL_DISCARD_SERR); +} + +/************************************************************************** + * (chassis number, pcie physical slot number) -> pcie slot conversion + */ +struct PCIEChassis { + uint8_t number; + + QLIST_HEAD(, PCIESlot) slots; + QLIST_ENTRY(PCIEChassis) next; +}; + +static QLIST_HEAD(, PCIEChassis) chassis = QLIST_HEAD_INITIALIZER(chassis); + +static struct PCIEChassis *pcie_chassis_find(uint8_t chassis_number) +{ + struct PCIEChassis *c; + QLIST_FOREACH(c, &chassis, next) { + if (c->number == chassis_number) { + break; + } + } + return c; +} + +void pcie_chassis_create(uint8_t chassis_number) +{ + struct PCIEChassis *c; + c = pcie_chassis_find(chassis_number); + if (c) { + return; + } + c = g_malloc0(sizeof(*c)); + c->number = chassis_number; + QLIST_INIT(&c->slots); + QLIST_INSERT_HEAD(&chassis, c, next); +} + +static PCIESlot *pcie_chassis_find_slot_with_chassis(struct PCIEChassis *c, + uint8_t slot) +{ + PCIESlot *s; + QLIST_FOREACH(s, &c->slots, next) { + if (s->slot == slot) { + break; + } + } + return s; +} + +PCIESlot *pcie_chassis_find_slot(uint8_t chassis_number, uint16_t slot) +{ + struct PCIEChassis *c; + c = pcie_chassis_find(chassis_number); + if (!c) { + return NULL; + } + return pcie_chassis_find_slot_with_chassis(c, slot); +} + +int pcie_chassis_add_slot(struct PCIESlot *slot) +{ + struct PCIEChassis *c; + c = pcie_chassis_find(slot->chassis); + if (!c) { + return -ENODEV; + } + if (pcie_chassis_find_slot_with_chassis(c, slot->slot)) { + return -EBUSY; + } + QLIST_INSERT_HEAD(&c->slots, slot, next); + return 0; +} + +void pcie_chassis_del_slot(PCIESlot *s) +{ + QLIST_REMOVE(s, next); +} + +static Property pcie_port_props[] = { + DEFINE_PROP_UINT8("port", PCIEPort, port, 0), + DEFINE_PROP_UINT16("aer_log_max", PCIEPort, + parent_obj.parent_obj.exp.aer_log.log_max, + PCIE_AER_LOG_MAX_DEFAULT), + DEFINE_PROP_END_OF_LIST() +}; + +static void pcie_port_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + + device_class_set_props(dc, pcie_port_props); +} + +PCIDevice *pcie_find_port_by_pn(PCIBus *bus, uint8_t pn) +{ + int devfn; + + for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { + PCIDevice *d = bus->devices[devfn]; + PCIEPort *port; + + if (!d || !pci_is_express(d) || !d->exp.exp_cap) { + continue; + } + + if (!object_dynamic_cast(OBJECT(d), TYPE_PCIE_PORT)) { + continue; + } + + port = PCIE_PORT(d); + if (port->port == pn) { + return d; + } + } + + return NULL; +} + +static const TypeInfo pcie_port_type_info = { + .name = TYPE_PCIE_PORT, + .parent = TYPE_PCI_BRIDGE, + .instance_size = sizeof(PCIEPort), + .abstract = true, + .class_init = pcie_port_class_init, +}; + +static Property pcie_slot_props[] = { + DEFINE_PROP_UINT8("chassis", PCIESlot, chassis, 0), + DEFINE_PROP_UINT16("slot", PCIESlot, slot, 0), + DEFINE_PROP_BOOL("hotplug", PCIESlot, hotplug, true), + DEFINE_PROP_BOOL("x-native-hotplug", PCIESlot, native_hotplug, true), + DEFINE_PROP_END_OF_LIST() +}; + +static void pcie_slot_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); + + device_class_set_props(dc, pcie_slot_props); + hc->pre_plug = pcie_cap_slot_pre_plug_cb; + hc->plug = pcie_cap_slot_plug_cb; + hc->unplug = pcie_cap_slot_unplug_cb; + hc->unplug_request = pcie_cap_slot_unplug_request_cb; +} + +static const TypeInfo pcie_slot_type_info = { + .name = TYPE_PCIE_SLOT, + .parent = TYPE_PCIE_PORT, + .instance_size = sizeof(PCIESlot), + .abstract = true, + .class_init = pcie_slot_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { } + } +}; + +static void pcie_port_register_types(void) +{ + type_register_static(&pcie_port_type_info); + type_register_static(&pcie_slot_type_info); +} + +type_init(pcie_port_register_types) |