1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* Base class for PCI Express Root Ports
*
* Copyright (C) 2017 Red Hat Inc
*
* Authors:
* Marcel Apfelbaum <marcel@redhat.com>
*
* Most of the code was migrated from hw/pci-bridge/ioh3420.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "hw/pci/pcie_port.h"
#include "hw/qdev-properties.h"
static void rp_aer_vector_update(PCIDevice *d)
{
PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d);
if (rpc->aer_vector) {
pcie_aer_root_set_vector(d, rpc->aer_vector(d));
}
}
static void rp_write_config(PCIDevice *d, uint32_t address,
uint32_t val, int len)
{
uint32_t root_cmd =
pci_get_long(d->config + d->exp.aer_cap + PCI_ERR_ROOT_COMMAND);
uint16_t slt_ctl, slt_sta;
pcie_cap_slot_get(d, &slt_ctl, &slt_sta);
pci_bridge_write_config(d, address, val, len);
rp_aer_vector_update(d);
pcie_cap_slot_write_config(d, slt_ctl, slt_sta, address, val, len);
pcie_aer_write_config(d, address, val, len);
pcie_aer_root_write_config(d, address, val, len, root_cmd);
}
static void rp_reset(DeviceState *qdev)
{
PCIDevice *d = PCI_DEVICE(qdev);
rp_aer_vector_update(d);
pcie_cap_root_reset(d);
pcie_cap_deverr_reset(d);
pcie_cap_slot_reset(d);
pcie_cap_arifwd_reset(d);
pcie_acs_reset(d);
pcie_aer_root_reset(d);
pci_bridge_reset(qdev);
pci_bridge_disable_base_limit(d);
}
static void rp_realize(PCIDevice *d, Error **errp)
{
PCIEPort *p = PCIE_PORT(d);
PCIESlot *s = PCIE_SLOT(d);
PCIDeviceClass *dc = PCI_DEVICE_GET_CLASS(d);
PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d);
int rc;
pci_config_set_interrupt_pin(d->config, 1);
pci_bridge_initfn(d, TYPE_PCIE_BUS);
pcie_port_init_reg(d);
rc = pci_bridge_ssvid_init(d, rpc->ssvid_offset, dc->vendor_id,
rpc->ssid, errp);
if (rc < 0) {
error_append_hint(errp, "Can't init SSV ID, error %d\n", rc);
goto err_bridge;
}
if (rpc->interrupts_init) {
rc = rpc->interrupts_init(d, errp);
if (rc < 0) {
goto err_bridge;
}
}
rc = pcie_cap_init(d, rpc->exp_offset, PCI_EXP_TYPE_ROOT_PORT,
p->port, errp);
if (rc < 0) {
error_append_hint(errp, "Can't add Root Port capability, "
"error %d\n", rc);
goto err_int;
}
pcie_cap_arifwd_init(d);
pcie_cap_deverr_init(d);
pcie_cap_slot_init(d, s);
pcie_cap_root_init(d);
pcie_chassis_create(s->chassis);
rc = pcie_chassis_add_slot(s);
if (rc < 0) {
error_setg(errp, "Can't add chassis slot, error %d", rc);
goto err_pcie_cap;
}
rc = pcie_aer_init(d, PCI_ERR_VER, rpc->aer_offset,
PCI_ERR_SIZEOF, errp);
if (rc < 0) {
goto err;
}
pcie_aer_root_init(d);
rp_aer_vector_update(d);
if (rpc->acs_offset && !s->disable_acs) {
pcie_acs_init(d, rpc->acs_offset);
}
return;
err:
pcie_chassis_del_slot(s);
err_pcie_cap:
pcie_cap_exit(d);
err_int:
if (rpc->interrupts_uninit) {
rpc->interrupts_uninit(d);
}
err_bridge:
pci_bridge_exitfn(d);
}
static void rp_exit(PCIDevice *d)
{
PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d);
PCIESlot *s = PCIE_SLOT(d);
pcie_aer_exit(d);
pcie_chassis_del_slot(s);
pcie_cap_exit(d);
if (rpc->interrupts_uninit) {
rpc->interrupts_uninit(d);
}
pci_bridge_exitfn(d);
}
static Property rp_props[] = {
DEFINE_PROP_BIT(COMPAT_PROP_PCP, PCIDevice, cap_present,
QEMU_PCIE_SLTCAP_PCP_BITNR, true),
DEFINE_PROP_BOOL("disable-acs", PCIESlot, disable_acs, false),
DEFINE_PROP_END_OF_LIST()
};
static void rp_instance_post_init(Object *obj)
{
PCIESlot *s = PCIE_SLOT(obj);
if (!s->speed) {
s->speed = QEMU_PCI_EXP_LNK_2_5GT;
}
if (!s->width) {
s->width = QEMU_PCI_EXP_LNK_X1;
}
}
static void rp_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->is_bridge = true;
k->config_write = rp_write_config;
k->realize = rp_realize;
k->exit = rp_exit;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->reset = rp_reset;
device_class_set_props(dc, rp_props);
}
static const TypeInfo rp_info = {
.name = TYPE_PCIE_ROOT_PORT,
.parent = TYPE_PCIE_SLOT,
.instance_post_init = rp_instance_post_init,
.class_init = rp_class_init,
.abstract = true,
.class_size = sizeof(PCIERootPortClass),
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_PCIE_DEVICE },
{ }
},
};
static void rp_register_types(void)
{
type_register_static(&rp_info);
}
type_init(rp_register_types)
|
