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1.1 root 1: /*
2: * ioh3420.c
3: * Intel X58 north bridge IOH
4: * PCI Express root port device id 3420
5: *
6: * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
7: * VA Linux Systems Japan K.K.
8: *
9: * This program is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * This program is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: * GNU General Public License for more details.
18: *
19: * You should have received a copy of the GNU General Public License along
20: * with this program; if not, see <http://www.gnu.org/licenses/>.
21: */
22:
23: #include "pci_ids.h"
24: #include "msi.h"
25: #include "pcie.h"
26: #include "ioh3420.h"
27:
28: #define PCI_DEVICE_ID_IOH_EPORT 0x3420 /* D0:F0 express mode */
29: #define PCI_DEVICE_ID_IOH_REV 0x2
30: #define IOH_EP_SSVID_OFFSET 0x40
31: #define IOH_EP_SSVID_SVID PCI_VENDOR_ID_INTEL
32: #define IOH_EP_SSVID_SSID 0
33: #define IOH_EP_MSI_OFFSET 0x60
34: #define IOH_EP_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_MASKBIT
35: #define IOH_EP_MSI_NR_VECTOR 2
36: #define IOH_EP_EXP_OFFSET 0x90
37: #define IOH_EP_AER_OFFSET 0x100
38:
39: /*
40: * If two MSI vector are allocated, Advanced Error Interrupt Message Number
41: * is 1. otherwise 0.
42: * 17.12.5.10 RPERRSTS, 32:27 bit Advanced Error Interrupt Message Number.
43: */
44: static uint8_t ioh3420_aer_vector(const PCIDevice *d)
45: {
46: switch (msi_nr_vectors_allocated(d)) {
47: case 1:
48: return 0;
49: case 2:
50: return 1;
51: case 4:
52: case 8:
53: case 16:
54: case 32:
55: default:
56: break;
57: }
58: abort();
59: return 0;
60: }
61:
62: static void ioh3420_aer_vector_update(PCIDevice *d)
63: {
64: pcie_aer_root_set_vector(d, ioh3420_aer_vector(d));
65: }
66:
67: static void ioh3420_write_config(PCIDevice *d,
68: uint32_t address, uint32_t val, int len)
69: {
70: uint32_t root_cmd =
71: pci_get_long(d->config + d->exp.aer_cap + PCI_ERR_ROOT_COMMAND);
72:
73: pci_bridge_write_config(d, address, val, len);
74: msi_write_config(d, address, val, len);
75: ioh3420_aer_vector_update(d);
76: pcie_cap_slot_write_config(d, address, val, len);
77: pcie_aer_write_config(d, address, val, len);
78: pcie_aer_root_write_config(d, address, val, len, root_cmd);
79: }
80:
81: static void ioh3420_reset(DeviceState *qdev)
82: {
83: PCIDevice *d = DO_UPCAST(PCIDevice, qdev, qdev);
84: msi_reset(d);
85: ioh3420_aer_vector_update(d);
86: pcie_cap_root_reset(d);
87: pcie_cap_deverr_reset(d);
88: pcie_cap_slot_reset(d);
89: pcie_aer_root_reset(d);
90: pci_bridge_reset(qdev);
91: pci_bridge_disable_base_limit(d);
92: }
93:
94: static int ioh3420_initfn(PCIDevice *d)
95: {
96: PCIBridge* br = DO_UPCAST(PCIBridge, dev, d);
97: PCIEPort *p = DO_UPCAST(PCIEPort, br, br);
98: PCIESlot *s = DO_UPCAST(PCIESlot, port, p);
99: int rc;
100: int tmp;
101:
102: rc = pci_bridge_initfn(d);
103: if (rc < 0) {
104: return rc;
105: }
106:
107: pcie_port_init_reg(d);
108:
109: rc = pci_bridge_ssvid_init(d, IOH_EP_SSVID_OFFSET,
110: IOH_EP_SSVID_SVID, IOH_EP_SSVID_SSID);
111: if (rc < 0) {
112: goto err_bridge;
113: }
114: rc = msi_init(d, IOH_EP_MSI_OFFSET, IOH_EP_MSI_NR_VECTOR,
115: IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT,
116: IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT);
117: if (rc < 0) {
118: goto err_bridge;
119: }
120: rc = pcie_cap_init(d, IOH_EP_EXP_OFFSET, PCI_EXP_TYPE_ROOT_PORT, p->port);
121: if (rc < 0) {
122: goto err_msi;
123: }
124: pcie_cap_deverr_init(d);
125: pcie_cap_slot_init(d, s->slot);
126: pcie_chassis_create(s->chassis);
127: rc = pcie_chassis_add_slot(s);
128: if (rc < 0) {
129: goto err_pcie_cap;
130: return rc;
131: }
132: pcie_cap_root_init(d);
133: rc = pcie_aer_init(d, IOH_EP_AER_OFFSET);
134: if (rc < 0) {
135: goto err;
136: }
137: pcie_aer_root_init(d);
138: ioh3420_aer_vector_update(d);
139: return 0;
140:
141: err:
142: pcie_chassis_del_slot(s);
143: err_pcie_cap:
144: pcie_cap_exit(d);
145: err_msi:
146: msi_uninit(d);
147: err_bridge:
148: tmp = pci_bridge_exitfn(d);
149: assert(!tmp);
150: return rc;
151: }
152:
153: static int ioh3420_exitfn(PCIDevice *d)
154: {
155: PCIBridge* br = DO_UPCAST(PCIBridge, dev, d);
156: PCIEPort *p = DO_UPCAST(PCIEPort, br, br);
157: PCIESlot *s = DO_UPCAST(PCIESlot, port, p);
158:
159: pcie_aer_exit(d);
160: pcie_chassis_del_slot(s);
161: pcie_cap_exit(d);
162: msi_uninit(d);
163: return pci_bridge_exitfn(d);
164: }
165:
166: PCIESlot *ioh3420_init(PCIBus *bus, int devfn, bool multifunction,
167: const char *bus_name, pci_map_irq_fn map_irq,
168: uint8_t port, uint8_t chassis, uint16_t slot)
169: {
170: PCIDevice *d;
171: PCIBridge *br;
172: DeviceState *qdev;
173:
174: d = pci_create_multifunction(bus, devfn, multifunction, "ioh3420");
175: if (!d) {
176: return NULL;
177: }
178: br = DO_UPCAST(PCIBridge, dev, d);
179:
180: qdev = &br->dev.qdev;
181: pci_bridge_map_irq(br, bus_name, map_irq);
182: qdev_prop_set_uint8(qdev, "port", port);
183: qdev_prop_set_uint8(qdev, "chassis", chassis);
184: qdev_prop_set_uint16(qdev, "slot", slot);
185: qdev_init_nofail(qdev);
186:
187: return DO_UPCAST(PCIESlot, port, DO_UPCAST(PCIEPort, br, br));
188: }
189:
190: static const VMStateDescription vmstate_ioh3420 = {
191: .name = "ioh-3240-express-root-port",
192: .version_id = 1,
193: .minimum_version_id = 1,
194: .minimum_version_id_old = 1,
195: .post_load = pcie_cap_slot_post_load,
196: .fields = (VMStateField[]) {
197: VMSTATE_PCIE_DEVICE(port.br.dev, PCIESlot),
198: VMSTATE_STRUCT(port.br.dev.exp.aer_log, PCIESlot, 0,
199: vmstate_pcie_aer_log, PCIEAERLog),
200: VMSTATE_END_OF_LIST()
201: }
202: };
203:
204: static PCIDeviceInfo ioh3420_info = {
205: .qdev.name = "ioh3420",
206: .qdev.desc = "Intel IOH device id 3420 PCIE Root Port",
207: .qdev.size = sizeof(PCIESlot),
208: .qdev.reset = ioh3420_reset,
209: .qdev.vmsd = &vmstate_ioh3420,
210:
211: .is_express = 1,
212: .is_bridge = 1,
213: .config_write = ioh3420_write_config,
214: .init = ioh3420_initfn,
215: .exit = ioh3420_exitfn,
1.1.1.2 ! root 216: .vendor_id = PCI_VENDOR_ID_INTEL,
! 217: .device_id = PCI_DEVICE_ID_IOH_EPORT,
! 218: .revision = PCI_DEVICE_ID_IOH_REV,
1.1 root 219:
220: .qdev.props = (Property[]) {
221: DEFINE_PROP_UINT8("port", PCIESlot, port.port, 0),
222: DEFINE_PROP_UINT8("chassis", PCIESlot, chassis, 0),
223: DEFINE_PROP_UINT16("slot", PCIESlot, slot, 0),
224: DEFINE_PROP_UINT16("aer_log_max", PCIESlot,
225: port.br.dev.exp.aer_log.log_max,
226: PCIE_AER_LOG_MAX_DEFAULT),
227: DEFINE_PROP_END_OF_LIST(),
228: }
229: };
230:
231: static void ioh3420_register(void)
232: {
233: pci_qdev_register(&ioh3420_info);
234: }
235:
236: device_init(ioh3420_register);
237:
238: /*
239: * Local variables:
240: * c-indent-level: 4
241: * c-basic-offset: 4
242: * tab-width: 8
243: * indent-tab-mode: nil
244: * End:
245: */
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