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1 /*
2 * xio3130_upstream.c
3 * TI X3130 pci express upstream port switch
4 *
5 * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
6 * VA Linux Systems Japan K.K.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, see <http://www.gnu.org/licenses/>.
20 */
21
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 "migration/vmstate.h"
28 #include "qemu/module.h"
29
30 #define PCI_DEVICE_ID_TI_XIO3130U 0x8232 /* upstream port */
31 #define XIO3130_REVISION 0x2
32 #define XIO3130_MSI_OFFSET 0x70
33 #define XIO3130_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_64BIT
34 #define XIO3130_MSI_NR_VECTOR 1
35 #define XIO3130_SSVID_OFFSET 0x80
36 #define XIO3130_SSVID_SVID 0
37 #define XIO3130_SSVID_SSID 0
38 #define XIO3130_EXP_OFFSET 0x90
39 #define XIO3130_AER_OFFSET 0x100
40
41 static void xio3130_upstream_write_config(PCIDevice *d, uint32_t address,
42 uint32_t val, int len)
43 {
44 pci_bridge_write_config(d, address, val, len);
45 pcie_cap_flr_write_config(d, address, val, len);
46 pcie_aer_write_config(d, address, val, len);
47 }
48
49 static void xio3130_upstream_reset(DeviceState *qdev)
50 {
51 PCIDevice *d = PCI_DEVICE(qdev);
52
53 pci_bridge_reset(qdev);
54 pcie_cap_deverr_reset(d);
55 }
56
57 static void xio3130_upstream_realize(PCIDevice *d, Error **errp)
58 {
59 PCIEPort *p = PCIE_PORT(d);
60 int rc;
61
62 pci_bridge_initfn(d, TYPE_PCIE_BUS);
63 pcie_port_init_reg(d);
64
65 rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR,
66 XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT,
67 XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT,
68 errp);
69 if (rc < 0) {
70 assert(rc == -ENOTSUP);
71 goto err_bridge;
72 }
73
74 rc = pci_bridge_ssvid_init(d, XIO3130_SSVID_OFFSET,
75 XIO3130_SSVID_SVID, XIO3130_SSVID_SSID,
76 errp);
77 if (rc < 0) {
78 goto err_msi;
79 }
80
81 rc = pcie_cap_init(d, XIO3130_EXP_OFFSET, PCI_EXP_TYPE_UPSTREAM,
82 p->port, errp);
83 if (rc < 0) {
84 goto err_msi;
85 }
86 pcie_cap_flr_init(d);
87 pcie_cap_deverr_init(d);
88
89 rc = pcie_aer_init(d, PCI_ERR_VER, XIO3130_AER_OFFSET,
90 PCI_ERR_SIZEOF, errp);
91 if (rc < 0) {
92 goto err;
93 }
94
95 return;
96
97 err:
98 pcie_cap_exit(d);
99 err_msi:
100 msi_uninit(d);
101 err_bridge:
102 pci_bridge_exitfn(d);
103 }
104
105 static void xio3130_upstream_exitfn(PCIDevice *d)
106 {
107 pcie_aer_exit(d);
108 pcie_cap_exit(d);
109 msi_uninit(d);
110 pci_bridge_exitfn(d);
111 }
112
113 static const VMStateDescription vmstate_xio3130_upstream = {
114 .name = "xio3130-express-upstream-port",
115 .priority = MIG_PRI_PCI_BUS,
116 .version_id = 1,
117 .minimum_version_id = 1,
118 .fields = (const VMStateField[]) {
119 VMSTATE_PCI_DEVICE(parent_obj.parent_obj, PCIEPort),
120 VMSTATE_STRUCT(parent_obj.parent_obj.exp.aer_log, PCIEPort, 0,
121 vmstate_pcie_aer_log, PCIEAERLog),
122 VMSTATE_END_OF_LIST()
123 }
124 };
125
126 static void xio3130_upstream_class_init(ObjectClass *klass, const void *data)
127 {
128 DeviceClass *dc = DEVICE_CLASS(klass);
129 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
130
131 k->config_write = xio3130_upstream_write_config;
132 k->realize = xio3130_upstream_realize;
133 k->exit = xio3130_upstream_exitfn;
134 k->vendor_id = PCI_VENDOR_ID_TI;
135 k->device_id = PCI_DEVICE_ID_TI_XIO3130U;
136 k->revision = XIO3130_REVISION;
137 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
138 dc->desc = "TI X3130 Upstream Port of PCI Express Switch";
139 device_class_set_legacy_reset(dc, xio3130_upstream_reset);
140 dc->vmsd = &vmstate_xio3130_upstream;
141 }
142
143 static const TypeInfo xio3130_upstream_info = {
144 .name = "x3130-upstream",
145 .parent = TYPE_PCIE_PORT,
146 .class_init = xio3130_upstream_class_init,
147 .interfaces = (const InterfaceInfo[]) {
148 { INTERFACE_PCIE_DEVICE },
149 { }
150 },
151 };
152
153 static void xio3130_upstream_register_types(void)
154 {
155 type_register_static(&xio3130_upstream_info);
156 }
157
158 type_init(xio3130_upstream_register_types)