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22#include "qemu/osdep.h"
23#include "hw/pci/pci_ids.h"
24#include "hw/pci/msi.h"
25#include "hw/pci/pcie.h"
26#include "hw/pci/pcie_port.h"
27#include "hw/qdev-properties.h"
28#include "migration/vmstate.h"
29#include "qapi/error.h"
30#include "qemu/module.h"
31
32#define PCI_DEVICE_ID_TI_XIO3130D 0x8233
33#define XIO3130_REVISION 0x1
34#define XIO3130_MSI_OFFSET 0x70
35#define XIO3130_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_64BIT
36#define XIO3130_MSI_NR_VECTOR 1
37#define XIO3130_SSVID_OFFSET 0x80
38#define XIO3130_SSVID_SVID 0
39#define XIO3130_SSVID_SSID 0
40#define XIO3130_EXP_OFFSET 0x90
41#define XIO3130_AER_OFFSET 0x100
42
43static void xio3130_downstream_write_config(PCIDevice *d, uint32_t address,
44 uint32_t val, int len)
45{
46 uint16_t slt_ctl, slt_sta;
47
48 pcie_cap_slot_get(d, &slt_ctl, &slt_sta);
49 pci_bridge_write_config(d, address, val, len);
50 pcie_cap_flr_write_config(d, address, val, len);
51 pcie_cap_slot_write_config(d, slt_ctl, slt_sta, address, val, len);
52 pcie_aer_write_config(d, address, val, len);
53}
54
55static void xio3130_downstream_reset(DeviceState *qdev)
56{
57 PCIDevice *d = PCI_DEVICE(qdev);
58
59 pcie_cap_deverr_reset(d);
60 pcie_cap_slot_reset(d);
61 pcie_cap_arifwd_reset(d);
62 pci_bridge_reset(qdev);
63}
64
65static void xio3130_downstream_realize(PCIDevice *d, Error **errp)
66{
67 PCIEPort *p = PCIE_PORT(d);
68 PCIESlot *s = PCIE_SLOT(d);
69 int rc;
70
71 pci_bridge_initfn(d, TYPE_PCIE_BUS);
72 pcie_port_init_reg(d);
73
74 rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR,
75 XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT,
76 XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT,
77 errp);
78 if (rc < 0) {
79 assert(rc == -ENOTSUP);
80 goto err_bridge;
81 }
82
83 rc = pci_bridge_ssvid_init(d, XIO3130_SSVID_OFFSET,
84 XIO3130_SSVID_SVID, XIO3130_SSVID_SSID,
85 errp);
86 if (rc < 0) {
87 goto err_bridge;
88 }
89
90 rc = pcie_cap_init(d, XIO3130_EXP_OFFSET, PCI_EXP_TYPE_DOWNSTREAM,
91 p->port, errp);
92 if (rc < 0) {
93 goto err_msi;
94 }
95 pcie_cap_flr_init(d);
96 pcie_cap_deverr_init(d);
97 pcie_cap_slot_init(d, s);
98 pcie_cap_arifwd_init(d);
99
100 pcie_chassis_create(s->chassis);
101 rc = pcie_chassis_add_slot(s);
102 if (rc < 0) {
103 error_setg(errp, "Can't add chassis slot, error %d", rc);
104 goto err_pcie_cap;
105 }
106
107 rc = pcie_aer_init(d, PCI_ERR_VER, XIO3130_AER_OFFSET,
108 PCI_ERR_SIZEOF, errp);
109 if (rc < 0) {
110 goto err;
111 }
112
113 return;
114
115err:
116 pcie_chassis_del_slot(s);
117err_pcie_cap:
118 pcie_cap_exit(d);
119err_msi:
120 msi_uninit(d);
121err_bridge:
122 pci_bridge_exitfn(d);
123}
124
125static void xio3130_downstream_exitfn(PCIDevice *d)
126{
127 PCIESlot *s = PCIE_SLOT(d);
128
129 pcie_aer_exit(d);
130 pcie_chassis_del_slot(s);
131 pcie_cap_exit(d);
132 msi_uninit(d);
133 pci_bridge_exitfn(d);
134}
135
136static Property xio3130_downstream_props[] = {
137 DEFINE_PROP_BIT(COMPAT_PROP_PCP, PCIDevice, cap_present,
138 QEMU_PCIE_SLTCAP_PCP_BITNR, true),
139 DEFINE_PROP_END_OF_LIST()
140};
141
142static const VMStateDescription vmstate_xio3130_downstream = {
143 .name = "xio3130-express-downstream-port",
144 .priority = MIG_PRI_PCI_BUS,
145 .version_id = 1,
146 .minimum_version_id = 1,
147 .post_load = pcie_cap_slot_post_load,
148 .fields = (VMStateField[]) {
149 VMSTATE_PCI_DEVICE(parent_obj.parent_obj.parent_obj, PCIESlot),
150 VMSTATE_STRUCT(parent_obj.parent_obj.parent_obj.exp.aer_log,
151 PCIESlot, 0, vmstate_pcie_aer_log, PCIEAERLog),
152 VMSTATE_END_OF_LIST()
153 }
154};
155
156static void xio3130_downstream_class_init(ObjectClass *klass, void *data)
157{
158 DeviceClass *dc = DEVICE_CLASS(klass);
159 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
160
161 k->is_bridge = true;
162 k->config_write = xio3130_downstream_write_config;
163 k->realize = xio3130_downstream_realize;
164 k->exit = xio3130_downstream_exitfn;
165 k->vendor_id = PCI_VENDOR_ID_TI;
166 k->device_id = PCI_DEVICE_ID_TI_XIO3130D;
167 k->revision = XIO3130_REVISION;
168 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
169 dc->desc = "TI X3130 Downstream Port of PCI Express Switch";
170 dc->reset = xio3130_downstream_reset;
171 dc->vmsd = &vmstate_xio3130_downstream;
172 device_class_set_props(dc, xio3130_downstream_props);
173}
174
175static const TypeInfo xio3130_downstream_info = {
176 .name = "xio3130-downstream",
177 .parent = TYPE_PCIE_SLOT,
178 .class_init = xio3130_downstream_class_init,
179 .interfaces = (InterfaceInfo[]) {
180 { INTERFACE_PCIE_DEVICE },
181 { }
182 },
183};
184
185static void xio3130_downstream_register_types(void)
186{
187 type_register_static(&xio3130_downstream_info);
188}
189
190type_init(xio3130_downstream_register_types)
191
