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* Base class for PCI Express Root Ports
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* Copyright (C) 2017 Red Hat Inc
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* Marcel Apfelbaum <marcel@redhat.com>
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* Most of the code was migrated from hw/pci-bridge/ioh3420.
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/pci/pcie_port.h"
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static void rp_aer_vector_update(PCIDevice *d)
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PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d);
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if (rpc->aer_vector) {
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pcie_aer_root_set_vector(d, rpc->aer_vector(d));
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static void rp_write_config(PCIDevice *d, uint32_t address,
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uint32_t val, int len)
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pci_get_long(d->config + d->exp.aer_cap + PCI_ERR_ROOT_COMMAND);
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pci_bridge_write_config(d, address, val, len);
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rp_aer_vector_update(d);
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pcie_cap_slot_write_config(d, address, val, len);
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pcie_aer_write_config(d, address, val, len);
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pcie_aer_root_write_config(d, address, val, len, root_cmd);
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static void rp_reset(DeviceState *qdev)
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PCIDevice *d = PCI_DEVICE(qdev);
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rp_aer_vector_update(d);
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pcie_cap_root_reset(d);
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pcie_cap_deverr_reset(d);
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pcie_cap_slot_reset(d);
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pcie_cap_arifwd_reset(d);
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pcie_aer_root_reset(d);
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pci_bridge_reset(qdev);
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pci_bridge_disable_base_limit(d);
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static void rp_realize(PCIDevice *d, Error **errp)
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PCIEPort *p = PCIE_PORT(d);
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PCIESlot *s = PCIE_SLOT(d);
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PCIDeviceClass *dc = PCI_DEVICE_GET_CLASS(d);
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PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d);
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Error *local_err = NULL;
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pci_config_set_interrupt_pin(d->config, 1);
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pci_bridge_initfn(d, TYPE_PCIE_BUS);
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pcie_port_init_reg(d);
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rc = pci_bridge_ssvid_init(d, rpc->ssvid_offset, dc->vendor_id, rpc->ssid);
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error_setg(errp, "Can't init SSV ID, error %d", rc);
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if (rpc->interrupts_init) {
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rc = rpc->interrupts_init(d, &local_err);
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error_propagate(errp, local_err);
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rc = pcie_cap_init(d, rpc->exp_offset, PCI_EXP_TYPE_ROOT_PORT, p->port);
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error_setg(errp, "Can't add Root Port capability, error %d", rc);
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pcie_cap_arifwd_init(d);
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pcie_cap_deverr_init(d);
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pcie_cap_slot_init(d, s->slot);
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pcie_cap_root_init(d);
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pcie_chassis_create(s->chassis);
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rc = pcie_chassis_add_slot(s);
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error_setg(errp, "Can't add chassis slot, error %d", rc);
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rc = pcie_aer_init(d, PCI_ERR_VER, rpc->aer_offset,
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PCI_ERR_SIZEOF, &local_err);
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error_propagate(errp, local_err);
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pcie_aer_root_init(d);
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rp_aer_vector_update(d);
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pcie_chassis_del_slot(s);
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if (rpc->interrupts_uninit) {
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rpc->interrupts_uninit(d);
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pci_bridge_exitfn(d);
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static void rp_exit(PCIDevice *d)
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PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d);
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PCIESlot *s = PCIE_SLOT(d);
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pcie_chassis_del_slot(s);
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if (rpc->interrupts_uninit) {
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rpc->interrupts_uninit(d);
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pci_bridge_exitfn(d);
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static Property rp_props[] = {
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DEFINE_PROP_BIT(COMPAT_PROP_PCP, PCIDevice, cap_present,
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QEMU_PCIE_SLTCAP_PCP_BITNR, true),
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DEFINE_PROP_END_OF_LIST()
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static void rp_class_init(ObjectClass *klass, void *data)
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DeviceClass *dc = DEVICE_CLASS(klass);
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PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
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k->config_write = rp_write_config;
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k->realize = rp_realize;
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set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
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dc->reset = rp_reset;
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dc->props = rp_props;
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static const TypeInfo rp_info = {
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.name = TYPE_PCIE_ROOT_PORT,
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.parent = TYPE_PCIE_SLOT,
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.class_init = rp_class_init,
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.class_size = sizeof(PCIERootPortClass),
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static void rp_register_types(void)
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type_register_static(&rp_info);
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type_init(rp_register_types)