root / hw / pci / pcie_port.c @ 34b5d2c6
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1 | bc20ba98 | Isaku Yamahata | /*
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2 | bc20ba98 | Isaku Yamahata | * pcie_port.c
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3 | bc20ba98 | Isaku Yamahata | *
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4 | bc20ba98 | Isaku Yamahata | * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
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5 | bc20ba98 | Isaku Yamahata | * VA Linux Systems Japan K.K.
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6 | bc20ba98 | Isaku Yamahata | *
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7 | bc20ba98 | Isaku Yamahata | * This program is free software; you can redistribute it and/or modify
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8 | bc20ba98 | Isaku Yamahata | * it under the terms of the GNU General Public License as published by
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9 | bc20ba98 | Isaku Yamahata | * the Free Software Foundation; either version 2 of the License, or
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10 | bc20ba98 | Isaku Yamahata | * (at your option) any later version.
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11 | bc20ba98 | Isaku Yamahata | *
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12 | bc20ba98 | Isaku Yamahata | * This program is distributed in the hope that it will be useful,
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13 | bc20ba98 | Isaku Yamahata | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | bc20ba98 | Isaku Yamahata | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | bc20ba98 | Isaku Yamahata | * GNU General Public License for more details.
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16 | bc20ba98 | Isaku Yamahata | *
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17 | bc20ba98 | Isaku Yamahata | * You should have received a copy of the GNU General Public License along
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18 | bc20ba98 | Isaku Yamahata | * with this program; if not, see <http://www.gnu.org/licenses/>.
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19 | bc20ba98 | Isaku Yamahata | */
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20 | bc20ba98 | Isaku Yamahata | |
21 | c759b24f | Michael S. Tsirkin | #include "hw/pci/pcie_port.h" |
22 | bc20ba98 | Isaku Yamahata | |
23 | bc20ba98 | Isaku Yamahata | void pcie_port_init_reg(PCIDevice *d)
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24 | bc20ba98 | Isaku Yamahata | { |
25 | bc20ba98 | Isaku Yamahata | /* Unlike pci bridge,
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26 | bc20ba98 | Isaku Yamahata | 66MHz and fast back to back don't apply to pci express port. */
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27 | bc20ba98 | Isaku Yamahata | pci_set_word(d->config + PCI_STATUS, 0);
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28 | bc20ba98 | Isaku Yamahata | pci_set_word(d->config + PCI_SEC_STATUS, 0);
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29 | bc20ba98 | Isaku Yamahata | |
30 | 45eb768c | Michael S. Tsirkin | /*
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31 | 45eb768c | Michael S. Tsirkin | * Unlike conventional pci bridge, for some bits the spec states:
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32 | 45eb768c | Michael S. Tsirkin | * Does not apply to PCI Express and must be hardwired to 0.
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33 | 45eb768c | Michael S. Tsirkin | */
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34 | 45eb768c | Michael S. Tsirkin | pci_word_test_and_clear_mask(d->wmask + PCI_BRIDGE_CONTROL, |
35 | 45eb768c | Michael S. Tsirkin | PCI_BRIDGE_CTL_MASTER_ABORT | |
36 | 45eb768c | Michael S. Tsirkin | PCI_BRIDGE_CTL_FAST_BACK | |
37 | 45eb768c | Michael S. Tsirkin | PCI_BRIDGE_CTL_DISCARD | |
38 | 45eb768c | Michael S. Tsirkin | PCI_BRIDGE_CTL_SEC_DISCARD | |
39 | 45eb768c | Michael S. Tsirkin | PCI_BRIDGE_CTL_DISCARD_STATUS | |
40 | 45eb768c | Michael S. Tsirkin | PCI_BRIDGE_CTL_DISCARD_SERR); |
41 | bc20ba98 | Isaku Yamahata | } |
42 | bc20ba98 | Isaku Yamahata | |
43 | bc20ba98 | Isaku Yamahata | /**************************************************************************
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44 | bc20ba98 | Isaku Yamahata | * (chassis number, pcie physical slot number) -> pcie slot conversion
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45 | bc20ba98 | Isaku Yamahata | */
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46 | bc20ba98 | Isaku Yamahata | struct PCIEChassis {
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47 | bc20ba98 | Isaku Yamahata | uint8_t number; |
48 | bc20ba98 | Isaku Yamahata | |
49 | bc20ba98 | Isaku Yamahata | QLIST_HEAD(, PCIESlot) slots; |
50 | bc20ba98 | Isaku Yamahata | QLIST_ENTRY(PCIEChassis) next; |
51 | bc20ba98 | Isaku Yamahata | }; |
52 | bc20ba98 | Isaku Yamahata | |
53 | bc20ba98 | Isaku Yamahata | static QLIST_HEAD(, PCIEChassis) chassis = QLIST_HEAD_INITIALIZER(chassis);
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54 | bc20ba98 | Isaku Yamahata | |
55 | bc20ba98 | Isaku Yamahata | static struct PCIEChassis *pcie_chassis_find(uint8_t chassis_number) |
56 | bc20ba98 | Isaku Yamahata | { |
57 | bc20ba98 | Isaku Yamahata | struct PCIEChassis *c;
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58 | bc20ba98 | Isaku Yamahata | QLIST_FOREACH(c, &chassis, next) { |
59 | bc20ba98 | Isaku Yamahata | if (c->number == chassis_number) {
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60 | bc20ba98 | Isaku Yamahata | break;
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61 | bc20ba98 | Isaku Yamahata | } |
62 | bc20ba98 | Isaku Yamahata | } |
63 | bc20ba98 | Isaku Yamahata | return c;
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64 | bc20ba98 | Isaku Yamahata | } |
65 | bc20ba98 | Isaku Yamahata | |
66 | bc20ba98 | Isaku Yamahata | void pcie_chassis_create(uint8_t chassis_number)
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67 | bc20ba98 | Isaku Yamahata | { |
68 | bc20ba98 | Isaku Yamahata | struct PCIEChassis *c;
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69 | bc20ba98 | Isaku Yamahata | c = pcie_chassis_find(chassis_number); |
70 | bc20ba98 | Isaku Yamahata | if (c) {
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71 | bc20ba98 | Isaku Yamahata | return;
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72 | bc20ba98 | Isaku Yamahata | } |
73 | 7267c094 | Anthony Liguori | c = g_malloc0(sizeof(*c));
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74 | bc20ba98 | Isaku Yamahata | c->number = chassis_number; |
75 | bc20ba98 | Isaku Yamahata | QLIST_INIT(&c->slots); |
76 | bc20ba98 | Isaku Yamahata | QLIST_INSERT_HEAD(&chassis, c, next); |
77 | bc20ba98 | Isaku Yamahata | } |
78 | bc20ba98 | Isaku Yamahata | |
79 | bc20ba98 | Isaku Yamahata | static PCIESlot *pcie_chassis_find_slot_with_chassis(struct PCIEChassis *c, |
80 | bc20ba98 | Isaku Yamahata | uint8_t slot) |
81 | bc20ba98 | Isaku Yamahata | { |
82 | bc20ba98 | Isaku Yamahata | PCIESlot *s; |
83 | bc20ba98 | Isaku Yamahata | QLIST_FOREACH(s, &c->slots, next) { |
84 | bc20ba98 | Isaku Yamahata | if (s->slot == slot) {
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85 | bc20ba98 | Isaku Yamahata | break;
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86 | bc20ba98 | Isaku Yamahata | } |
87 | bc20ba98 | Isaku Yamahata | } |
88 | bc20ba98 | Isaku Yamahata | return s;
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89 | bc20ba98 | Isaku Yamahata | } |
90 | bc20ba98 | Isaku Yamahata | |
91 | bc20ba98 | Isaku Yamahata | PCIESlot *pcie_chassis_find_slot(uint8_t chassis_number, uint16_t slot) |
92 | bc20ba98 | Isaku Yamahata | { |
93 | bc20ba98 | Isaku Yamahata | struct PCIEChassis *c;
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94 | bc20ba98 | Isaku Yamahata | c = pcie_chassis_find(chassis_number); |
95 | bc20ba98 | Isaku Yamahata | if (!c) {
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96 | bc20ba98 | Isaku Yamahata | return NULL; |
97 | bc20ba98 | Isaku Yamahata | } |
98 | bc20ba98 | Isaku Yamahata | return pcie_chassis_find_slot_with_chassis(c, slot);
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99 | bc20ba98 | Isaku Yamahata | } |
100 | bc20ba98 | Isaku Yamahata | |
101 | bc20ba98 | Isaku Yamahata | int pcie_chassis_add_slot(struct PCIESlot *slot) |
102 | bc20ba98 | Isaku Yamahata | { |
103 | bc20ba98 | Isaku Yamahata | struct PCIEChassis *c;
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104 | bc20ba98 | Isaku Yamahata | c = pcie_chassis_find(slot->chassis); |
105 | bc20ba98 | Isaku Yamahata | if (!c) {
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106 | bc20ba98 | Isaku Yamahata | return -ENODEV;
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107 | bc20ba98 | Isaku Yamahata | } |
108 | bc20ba98 | Isaku Yamahata | if (pcie_chassis_find_slot_with_chassis(c, slot->slot)) {
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109 | bc20ba98 | Isaku Yamahata | return -EBUSY;
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110 | bc20ba98 | Isaku Yamahata | } |
111 | bc20ba98 | Isaku Yamahata | QLIST_INSERT_HEAD(&c->slots, slot, next); |
112 | bc20ba98 | Isaku Yamahata | return 0; |
113 | bc20ba98 | Isaku Yamahata | } |
114 | bc20ba98 | Isaku Yamahata | |
115 | bc20ba98 | Isaku Yamahata | void pcie_chassis_del_slot(PCIESlot *s)
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116 | bc20ba98 | Isaku Yamahata | { |
117 | bc20ba98 | Isaku Yamahata | QLIST_REMOVE(s, next); |
118 | bc20ba98 | Isaku Yamahata | } |
119 | bcb75750 | Andreas Färber | |
120 | bcb75750 | Andreas Färber | static Property pcie_port_props[] = {
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121 | bcb75750 | Andreas Färber | DEFINE_PROP_UINT8("port", PCIEPort, port, 0), |
122 | bcb75750 | Andreas Färber | DEFINE_PROP_UINT16("aer_log_max", PCIEPort,
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123 | bcb75750 | Andreas Färber | parent_obj.parent_obj.exp.aer_log.log_max, |
124 | bcb75750 | Andreas Färber | PCIE_AER_LOG_MAX_DEFAULT), |
125 | bcb75750 | Andreas Färber | DEFINE_PROP_END_OF_LIST() |
126 | bcb75750 | Andreas Färber | }; |
127 | bcb75750 | Andreas Färber | |
128 | bcb75750 | Andreas Färber | static void pcie_port_class_init(ObjectClass *oc, void *data) |
129 | bcb75750 | Andreas Färber | { |
130 | bcb75750 | Andreas Färber | DeviceClass *dc = DEVICE_CLASS(oc); |
131 | bcb75750 | Andreas Färber | |
132 | bcb75750 | Andreas Färber | dc->props = pcie_port_props; |
133 | bcb75750 | Andreas Färber | } |
134 | bcb75750 | Andreas Färber | |
135 | bcb75750 | Andreas Färber | static const TypeInfo pcie_port_type_info = { |
136 | bcb75750 | Andreas Färber | .name = TYPE_PCIE_PORT, |
137 | bcb75750 | Andreas Färber | .parent = TYPE_PCI_BRIDGE, |
138 | bcb75750 | Andreas Färber | .instance_size = sizeof(PCIEPort),
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139 | bcb75750 | Andreas Färber | .abstract = true,
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140 | bcb75750 | Andreas Färber | .class_init = pcie_port_class_init, |
141 | bcb75750 | Andreas Färber | }; |
142 | bcb75750 | Andreas Färber | |
143 | bcb75750 | Andreas Färber | static Property pcie_slot_props[] = {
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144 | bcb75750 | Andreas Färber | DEFINE_PROP_UINT8("chassis", PCIESlot, chassis, 0), |
145 | bcb75750 | Andreas Färber | DEFINE_PROP_UINT16("slot", PCIESlot, slot, 0), |
146 | bcb75750 | Andreas Färber | DEFINE_PROP_END_OF_LIST() |
147 | bcb75750 | Andreas Färber | }; |
148 | bcb75750 | Andreas Färber | |
149 | bcb75750 | Andreas Färber | static void pcie_slot_class_init(ObjectClass *oc, void *data) |
150 | bcb75750 | Andreas Färber | { |
151 | bcb75750 | Andreas Färber | DeviceClass *dc = DEVICE_CLASS(oc); |
152 | bcb75750 | Andreas Färber | |
153 | bcb75750 | Andreas Färber | dc->props = pcie_slot_props; |
154 | bcb75750 | Andreas Färber | } |
155 | bcb75750 | Andreas Färber | |
156 | bcb75750 | Andreas Färber | static const TypeInfo pcie_slot_type_info = { |
157 | bcb75750 | Andreas Färber | .name = TYPE_PCIE_SLOT, |
158 | bcb75750 | Andreas Färber | .parent = TYPE_PCIE_PORT, |
159 | bcb75750 | Andreas Färber | .instance_size = sizeof(PCIESlot),
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160 | bcb75750 | Andreas Färber | .abstract = true,
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161 | bcb75750 | Andreas Färber | .class_init = pcie_slot_class_init, |
162 | bcb75750 | Andreas Färber | }; |
163 | bcb75750 | Andreas Färber | |
164 | bcb75750 | Andreas Färber | static void pcie_port_register_types(void) |
165 | bcb75750 | Andreas Färber | { |
166 | bcb75750 | Andreas Färber | type_register_static(&pcie_port_type_info); |
167 | bcb75750 | Andreas Färber | type_register_static(&pcie_slot_type_info); |
168 | bcb75750 | Andreas Färber | } |
169 | bcb75750 | Andreas Färber | |
170 | bcb75750 | Andreas Färber | type_init(pcie_port_register_types) |