2 * Base class for PCI Express Root Ports
4 * Copyright (C) 2017 Red Hat Inc
7 * Marcel Apfelbaum <marcel@redhat.com>
9 * Most of the code was migrated from hw/pci-bridge/ioh3420.
11 * This work is licensed under the terms of the GNU GPL, version 2 or later.
12 * See the COPYING file in the top-level directory.
15 #include "qemu/osdep.h"
16 #include "qapi/error.h"
17 #include "qemu/module.h"
18 #include "hw/pci/pcie_port.h"
19 #include "hw/qdev-properties.h"
21 static void rp_aer_vector_update(PCIDevice *d)
23 PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d);
25 if (rpc->aer_vector) {
26 pcie_aer_root_set_vector(d, rpc->aer_vector(d));
30 static void rp_write_config(PCIDevice *d, uint32_t address,
31 uint32_t val, int len)
34 pci_get_long(d->config + d->exp.aer_cap + PCI_ERR_ROOT_COMMAND);
35 uint16_t slt_ctl, slt_sta;
37 pcie_cap_slot_get(d, &slt_ctl, &slt_sta);
39 pci_bridge_write_config(d, address, val, len);
40 rp_aer_vector_update(d);
41 pcie_cap_slot_write_config(d, slt_ctl, slt_sta, address, val, len);
42 pcie_aer_write_config(d, address, val, len);
43 pcie_aer_root_write_config(d, address, val, len, root_cmd);
46 static void rp_reset(DeviceState *qdev)
48 PCIDevice *d = PCI_DEVICE(qdev);
50 rp_aer_vector_update(d);
51 pcie_cap_root_reset(d);
52 pcie_cap_deverr_reset(d);
53 pcie_cap_slot_reset(d);
54 pcie_cap_arifwd_reset(d);
56 pcie_aer_root_reset(d);
57 pci_bridge_reset(qdev);
58 pci_bridge_disable_base_limit(d);
61 static void rp_realize(PCIDevice *d, Error **errp)
63 PCIEPort *p = PCIE_PORT(d);
64 PCIESlot *s = PCIE_SLOT(d);
65 PCIDeviceClass *dc = PCI_DEVICE_GET_CLASS(d);
66 PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d);
69 pci_config_set_interrupt_pin(d->config, 1);
70 if (d->cap_present & QEMU_PCIE_CAP_CXL) {
71 pci_bridge_initfn(d, TYPE_CXL_BUS);
73 pci_bridge_initfn(d, TYPE_PCIE_BUS);
75 pcie_port_init_reg(d);
77 rc = pci_bridge_ssvid_init(d, rpc->ssvid_offset, dc->vendor_id,
80 error_append_hint(errp, "Can't init SSV ID, error %d\n", rc);
84 if (rpc->interrupts_init) {
85 rc = rpc->interrupts_init(d, errp);
91 rc = pcie_cap_init(d, rpc->exp_offset, PCI_EXP_TYPE_ROOT_PORT,
94 error_append_hint(errp, "Can't add Root Port capability, "
99 pcie_cap_arifwd_init(d);
100 pcie_cap_deverr_init(d);
101 pcie_cap_slot_init(d, s);
102 pcie_cap_root_init(d);
104 pcie_chassis_create(s->chassis);
105 rc = pcie_chassis_add_slot(s);
107 error_setg(errp, "Can't add chassis slot, error %d", rc);
111 rc = pcie_aer_init(d, PCI_ERR_VER, rpc->aer_offset,
112 PCI_ERR_SIZEOF, errp);
116 pcie_aer_root_init(d);
117 rp_aer_vector_update(d);
119 if (rpc->acs_offset && !s->disable_acs) {
120 pcie_acs_init(d, rpc->acs_offset);
125 pcie_chassis_del_slot(s);
129 if (rpc->interrupts_uninit) {
130 rpc->interrupts_uninit(d);
133 pci_bridge_exitfn(d);
136 static void rp_exit(PCIDevice *d)
138 PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d);
139 PCIESlot *s = PCIE_SLOT(d);
142 pcie_chassis_del_slot(s);
144 if (rpc->interrupts_uninit) {
145 rpc->interrupts_uninit(d);
147 pci_bridge_exitfn(d);
150 static Property rp_props[] = {
151 DEFINE_PROP_BIT(COMPAT_PROP_PCP, PCIDevice, cap_present,
152 QEMU_PCIE_SLTCAP_PCP_BITNR, true),
153 DEFINE_PROP_BOOL("disable-acs", PCIESlot, disable_acs, false),
154 DEFINE_PROP_END_OF_LIST()
157 static void rp_instance_post_init(Object *obj)
159 PCIESlot *s = PCIE_SLOT(obj);
162 s->speed = QEMU_PCI_EXP_LNK_2_5GT;
166 s->width = QEMU_PCI_EXP_LNK_X1;
170 static void rp_class_init(ObjectClass *klass, void *data)
172 DeviceClass *dc = DEVICE_CLASS(klass);
173 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
176 k->config_write = rp_write_config;
177 k->realize = rp_realize;
179 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
180 dc->reset = rp_reset;
181 device_class_set_props(dc, rp_props);
184 static const TypeInfo rp_info = {
185 .name = TYPE_PCIE_ROOT_PORT,
186 .parent = TYPE_PCIE_SLOT,
187 .instance_post_init = rp_instance_post_init,
188 .class_init = rp_class_init,
190 .class_size = sizeof(PCIERootPortClass),
191 .interfaces = (InterfaceInfo[]) {
192 { INTERFACE_PCIE_DEVICE },
197 static void rp_register_types(void)
199 type_register_static(&rp_info);
202 type_init(rp_register_types)