Bug Summary

File:hw/pci-host/q35.c
Location:line 237, column 9
Description:Value stored to 'length' is never read

Annotated Source Code

1/*
2 * QEMU MCH/ICH9 PCI Bridge Emulation
3 *
4 * Copyright (c) 2006 Fabrice Bellard
5 * Copyright (c) 2009, 2010, 2011
6 * Isaku Yamahata <yamahata at valinux co jp>
7 * VA Linux Systems Japan K.K.
8 * Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
9 *
10 * This is based on piix_pci.c, but heavily modified.
11 *
12 * Permission is hereby granted, free of charge, to any person obtaining a copy
13 * of this software and associated documentation files (the "Software"), to deal
14 * in the Software without restriction, including without limitation the rights
15 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
16 * copies of the Software, and to permit persons to whom the Software is
17 * furnished to do so, subject to the following conditions:
18 *
19 * The above copyright notice and this permission notice shall be included in
20 * all copies or substantial portions of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
25 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
27 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28 * THE SOFTWARE.
29 */
30#include "hw/hw.h"
31#include "hw/pci-host/q35.h"
32#include "qapi/visitor.h"
33
34/****************************************************************************
35 * Q35 host
36 */
37
38static void q35_host_realize(DeviceState *dev, Error **errp)
39{
40 PCIHostState *pci = PCI_HOST_BRIDGE(dev)((PCIHostState *)object_dynamic_cast_assert(((Object *)((dev)
)), ("pci-host-bridge"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 40, __func__));
41 Q35PCIHost *s = Q35_HOST_DEVICE(dev)((Q35PCIHost *)object_dynamic_cast_assert(((Object *)((dev)))
, ("q35-pcihost"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 41, __func__));
42 SysBusDevice *sbd = SYS_BUS_DEVICE(dev)((SysBusDevice *)object_dynamic_cast_assert(((Object *)((dev)
)), ("sys-bus-device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 42, __func__));
43
44 sysbus_add_io(sbd, MCH_HOST_BRIDGE_CONFIG_ADDR0xcf8, &pci->conf_mem);
45 sysbus_init_ioports(sbd, MCH_HOST_BRIDGE_CONFIG_ADDR0xcf8, 4);
46
47 sysbus_add_io(sbd, MCH_HOST_BRIDGE_CONFIG_DATA0xcfc, &pci->data_mem);
48 sysbus_init_ioports(sbd, MCH_HOST_BRIDGE_CONFIG_DATA0xcfc, 4);
49
50 if (pcie_host_init(PCIE_HOST_BRIDGE(s)((PCIExpressHost *)object_dynamic_cast_assert(((Object *)((s)
)), ("pcie-host-bridge"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 50, __func__))) < 0) {
51 error_setg(errp, "failed to initialize pcie host")error_set(errp, ERROR_CLASS_GENERIC_ERROR, "failed to initialize pcie host"
);
52 return;
53 }
54 pci->bus = pci_bus_new(DEVICE(s)((DeviceState *)object_dynamic_cast_assert(((Object *)((s))),
("device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 54, __func__)), "pcie.0",
55 s->mch.pci_address_space, s->mch.address_space_io,
56 0, TYPE_PCIE_BUS"PCIE");
57 qdev_set_parent_bus(DEVICE(&s->mch)((DeviceState *)object_dynamic_cast_assert(((Object *)((&
s->mch))), ("device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 57, __func__)), BUS(pci->bus)((BusState *)object_dynamic_cast_assert(((Object *)((pci->
bus))), ("bus"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 57, __func__)));
58 qdev_init_nofail(DEVICE(&s->mch)((DeviceState *)object_dynamic_cast_assert(((Object *)((&
s->mch))), ("device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 58, __func__)));
59}
60
61static const char *q35_host_root_bus_path(PCIHostState *host_bridge,
62 PCIBus *rootbus)
63{
64 Q35PCIHost *s = Q35_HOST_DEVICE(host_bridge)((Q35PCIHost *)object_dynamic_cast_assert(((Object *)((host_bridge
))), ("q35-pcihost"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 64, __func__));
65
66 /* For backwards compat with old device paths */
67 if (s->mch.short_root_bus) {
68 return "0000";
69 }
70 return "0000:00";
71}
72
73static void q35_host_get_pci_hole_start(Object *obj, Visitor *v,
74 void *opaque, const char *name,
75 Error **errp)
76{
77 Q35PCIHost *s = Q35_HOST_DEVICE(obj)((Q35PCIHost *)object_dynamic_cast_assert(((Object *)((obj)))
, ("q35-pcihost"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 77, __func__));
78 uint32_t value = s->mch.pci_info.w32.begin;
79
80 visit_type_uint32(v, &value, name, errp);
81}
82
83static void q35_host_get_pci_hole_end(Object *obj, Visitor *v,
84 void *opaque, const char *name,
85 Error **errp)
86{
87 Q35PCIHost *s = Q35_HOST_DEVICE(obj)((Q35PCIHost *)object_dynamic_cast_assert(((Object *)((obj)))
, ("q35-pcihost"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 87, __func__));
88 uint32_t value = s->mch.pci_info.w32.end;
89
90 visit_type_uint32(v, &value, name, errp);
91}
92
93static void q35_host_get_pci_hole64_start(Object *obj, Visitor *v,
94 void *opaque, const char *name,
95 Error **errp)
96{
97 PCIHostState *h = PCI_HOST_BRIDGE(obj)((PCIHostState *)object_dynamic_cast_assert(((Object *)((obj)
)), ("pci-host-bridge"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 97, __func__));
98 Range w64;
99
100 pci_bus_get_w64_range(h->bus, &w64);
101
102 visit_type_uint64(v, &w64.begin, name, errp);
103}
104
105static void q35_host_get_pci_hole64_end(Object *obj, Visitor *v,
106 void *opaque, const char *name,
107 Error **errp)
108{
109 PCIHostState *h = PCI_HOST_BRIDGE(obj)((PCIHostState *)object_dynamic_cast_assert(((Object *)((obj)
)), ("pci-host-bridge"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 109, __func__));
110 Range w64;
111
112 pci_bus_get_w64_range(h->bus, &w64);
113
114 visit_type_uint64(v, &w64.end, name, errp);
115}
116
117static void q35_host_get_mmcfg_size(Object *obj, Visitor *v,
118 void *opaque, const char *name,
119 Error **errp)
120{
121 PCIExpressHost *e = PCIE_HOST_BRIDGE(obj)((PCIExpressHost *)object_dynamic_cast_assert(((Object *)((obj
))), ("pcie-host-bridge"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 121, __func__));
122 uint32_t value = e->size;
123
124 visit_type_uint32(v, &value, name, errp);
125}
126
127static Property mch_props[] = {
128 DEFINE_PROP_UINT64(PCIE_HOST_MCFG_BASE, Q35PCIHost, parent_obj.base_addr,{ .name = ("MCFG"), .info = &(qdev_prop_uint64), .offset =
__builtin_offsetof(Q35PCIHost, parent_obj.base_addr) + ((uint64_t
*)0 - (typeof(((Q35PCIHost *)0)->parent_obj.base_addr)*)0)
, .qtype = QTYPE_QINT, .defval = (uint64_t)0xb0000000, }
129 MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT){ .name = ("MCFG"), .info = &(qdev_prop_uint64), .offset =
__builtin_offsetof(Q35PCIHost, parent_obj.base_addr) + ((uint64_t
*)0 - (typeof(((Q35PCIHost *)0)->parent_obj.base_addr)*)0)
, .qtype = QTYPE_QINT, .defval = (uint64_t)0xb0000000, },
130 DEFINE_PROP_SIZE(PCI_HOST_PROP_PCI_HOLE64_SIZE, Q35PCIHost,{ .name = ("pci-hole64-size"), .info = &(qdev_prop_size),
.offset = __builtin_offsetof(Q35PCIHost, mch.pci_hole64_size
) + ((uint64_t*)0 - (typeof(((Q35PCIHost *)0)->mch.pci_hole64_size
)*)0), .qtype = QTYPE_QINT, .defval = (uint64_t)(~0x0ULL), }
131 mch.pci_hole64_size, DEFAULT_PCI_HOLE64_SIZE){ .name = ("pci-hole64-size"), .info = &(qdev_prop_size),
.offset = __builtin_offsetof(Q35PCIHost, mch.pci_hole64_size
) + ((uint64_t*)0 - (typeof(((Q35PCIHost *)0)->mch.pci_hole64_size
)*)0), .qtype = QTYPE_QINT, .defval = (uint64_t)(~0x0ULL), },
132 DEFINE_PROP_UINT32("short_root_bus", Q35PCIHost, mch.short_root_bus, 0){ .name = ("short_root_bus"), .info = &(qdev_prop_uint32)
, .offset = __builtin_offsetof(Q35PCIHost, mch.short_root_bus
) + ((uint32_t*)0 - (typeof(((Q35PCIHost *)0)->mch.short_root_bus
)*)0), .qtype = QTYPE_QINT, .defval = (uint32_t)0, },
133 DEFINE_PROP_END_OF_LIST(){},
134};
135
136static void q35_host_class_init(ObjectClass *klass, void *data)
137{
138 DeviceClass *dc = DEVICE_CLASS(klass)((DeviceClass *)object_class_dynamic_cast_assert(((ObjectClass
*)((klass))), ("device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 138, __func__));
139 PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass)((PCIHostBridgeClass *)object_class_dynamic_cast_assert(((ObjectClass
*)((klass))), ("pci-host-bridge"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 139, __func__));
140
141 hc->root_bus_path = q35_host_root_bus_path;
142 dc->realize = q35_host_realize;
143 dc->props = mch_props;
144 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
145 dc->fw_name = "pci";
146}
147
148static void q35_host_initfn(Object *obj)
149{
150 Q35PCIHost *s = Q35_HOST_DEVICE(obj)((Q35PCIHost *)object_dynamic_cast_assert(((Object *)((obj)))
, ("q35-pcihost"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 150, __func__));
151 PCIHostState *phb = PCI_HOST_BRIDGE(obj)((PCIHostState *)object_dynamic_cast_assert(((Object *)((obj)
)), ("pci-host-bridge"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 151, __func__));
152
153 memory_region_init_io(&phb->conf_mem, obj, &pci_host_conf_le_ops, phb,
154 "pci-conf-idx", 4);
155 memory_region_init_io(&phb->data_mem, obj, &pci_host_data_le_ops, phb,
156 "pci-conf-data", 4);
157
158 object_initialize(&s->mch, sizeof(s->mch), TYPE_MCH_PCI_DEVICE"mch");
159 object_property_add_child(OBJECT(s)((Object *)(s)), "mch", OBJECT(&s->mch)((Object *)(&s->mch)), NULL((void*)0));
160 qdev_prop_set_uint32(DEVICE(&s->mch)((DeviceState *)object_dynamic_cast_assert(((Object *)((&
s->mch))), ("device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 160, __func__)), "addr", PCI_DEVFN(0, 0)((((0) & 0x1f) << 3) | ((0) & 0x07)));
161 qdev_prop_set_bit(DEVICE(&s->mch)((DeviceState *)object_dynamic_cast_assert(((Object *)((&
s->mch))), ("device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 161, __func__)), "multifunction", false0);
162
163 object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_START"pci-hole-start", "int",
164 q35_host_get_pci_hole_start,
165 NULL((void*)0), NULL((void*)0), NULL((void*)0), NULL((void*)0));
166
167 object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_END"pci-hole-end", "int",
168 q35_host_get_pci_hole_end,
169 NULL((void*)0), NULL((void*)0), NULL((void*)0), NULL((void*)0));
170
171 object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_START"pci-hole64-start", "int",
172 q35_host_get_pci_hole64_start,
173 NULL((void*)0), NULL((void*)0), NULL((void*)0), NULL((void*)0));
174
175 object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_END"pci-hole64-end", "int",
176 q35_host_get_pci_hole64_end,
177 NULL((void*)0), NULL((void*)0), NULL((void*)0), NULL((void*)0));
178
179 object_property_add(obj, PCIE_HOST_MCFG_SIZE"mcfg_size", "int",
180 q35_host_get_mmcfg_size,
181 NULL((void*)0), NULL((void*)0), NULL((void*)0), NULL((void*)0));
182
183 /* Leave enough space for the biggest MCFG BAR */
184 /* TODO: this matches current bios behaviour, but
185 * it's not a power of two, which means an MTRR
186 * can't cover it exactly.
187 */
188 s->mch.pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT0xb0000000 +
189 MCH_HOST_BRIDGE_PCIEXBAR_MAX(0x10000000);
190 s->mch.pci_info.w32.end = IO_APIC_DEFAULT_ADDRESS0xfec00000;
191}
192
193static const TypeInfo q35_host_info = {
194 .name = TYPE_Q35_HOST_DEVICE"q35-pcihost",
195 .parent = TYPE_PCIE_HOST_BRIDGE"pcie-host-bridge",
196 .instance_size = sizeof(Q35PCIHost),
197 .instance_init = q35_host_initfn,
198 .class_init = q35_host_class_init,
199};
200
201/****************************************************************************
202 * MCH D0:F0
203 */
204
205/* PCIe MMCFG */
206static void mch_update_pciexbar(MCHPCIState *mch)
207{
208 PCIDevice *pci_dev = PCI_DEVICE(mch)((PCIDevice *)object_dynamic_cast_assert(((Object *)((mch))),
("pci-device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 208, __func__));
209 BusState *bus = qdev_get_parent_bus(DEVICE(mch)((DeviceState *)object_dynamic_cast_assert(((Object *)((mch))
), ("device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 209, __func__)));
210 PCIExpressHost *pehb = PCIE_HOST_BRIDGE(bus->parent)((PCIExpressHost *)object_dynamic_cast_assert(((Object *)((bus
->parent))), ("pcie-host-bridge"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 210, __func__));
211
212 uint64_t pciexbar;
213 int enable;
214 uint64_t addr;
215 uint64_t addr_mask;
216 uint32_t length;
217
218 pciexbar = pci_get_quad(pci_dev->config + MCH_HOST_BRIDGE_PCIEXBAR0x60);
219 enable = pciexbar & MCH_HOST_BRIDGE_PCIEXBAREN((uint64_t)1);
220 addr_mask = MCH_HOST_BRIDGE_PCIEXBAR_ADMSK((uint64_t)(((1ULL << ((35) + 1)) - 1) & ~((1ULL <<
28) - 1)));
221 switch (pciexbar & MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_MASK((uint64_t)(0x3 << 1))) {
222 case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_256M((uint64_t)(0x0 << 1)):
223 length = 256 * 1024 * 1024;
224 break;
225 case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_128M((uint64_t)(0x1 << 1)):
226 length = 128 * 1024 * 1024;
227 addr_mask |= MCH_HOST_BRIDGE_PCIEXBAR_128ADMSK((uint64_t)(1 << 26)) |
228 MCH_HOST_BRIDGE_PCIEXBAR_64ADMSK((uint64_t)(1 << 25));
229 break;
230 case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_64M((uint64_t)(0x2 << 1)):
231 length = 64 * 1024 * 1024;
232 addr_mask |= MCH_HOST_BRIDGE_PCIEXBAR_64ADMSK((uint64_t)(1 << 25));
233 break;
234 case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_RVD((uint64_t)(0x3 << 1)):
235 default:
236 enable = 0;
237 length = 0;
Value stored to 'length' is never read
238 abort();
239 break;
240 }
241 addr = pciexbar & addr_mask;
242 pcie_host_mmcfg_update(pehb, enable, addr, length);
243 /* Leave enough space for the MCFG BAR */
244 /*
245 * TODO: this matches current bios behaviour, but it's not a power of two,
246 * which means an MTRR can't cover it exactly.
247 */
248 if (enable) {
249 mch->pci_info.w32.begin = addr + length;
250 } else {
251 mch->pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT0xb0000000;
252 }
253}
254
255/* PAM */
256static void mch_update_pam(MCHPCIState *mch)
257{
258 PCIDevice *pd = PCI_DEVICE(mch)((PCIDevice *)object_dynamic_cast_assert(((Object *)((mch))),
("pci-device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 258, __func__));
259 int i;
260
261 memory_region_transaction_begin();
262 for (i = 0; i < 13; i++) {
263 pam_update(&mch->pam_regions[i], i,
264 pd->config[MCH_HOST_BRIDGE_PAM00x90 + ((i + 1) / 2)]);
265 }
266 memory_region_transaction_commit();
267}
268
269/* SMRAM */
270static void mch_update_smram(MCHPCIState *mch)
271{
272 PCIDevice *pd = PCI_DEVICE(mch)((PCIDevice *)object_dynamic_cast_assert(((Object *)((mch))),
("pci-device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 272, __func__));
273
274 memory_region_transaction_begin();
275 smram_update(&mch->smram_region, pd->config[MCH_HOST_BRDIGE_SMRAM0x9d],
276 mch->smm_enabled);
277 memory_region_transaction_commit();
278}
279
280static void mch_set_smm(int smm, void *arg)
281{
282 MCHPCIState *mch = arg;
283 PCIDevice *pd = PCI_DEVICE(mch)((PCIDevice *)object_dynamic_cast_assert(((Object *)((mch))),
("pci-device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 283, __func__));
284
285 memory_region_transaction_begin();
286 smram_set_smm(&mch->smm_enabled, smm, pd->config[MCH_HOST_BRDIGE_SMRAM0x9d],
287 &mch->smram_region);
288 memory_region_transaction_commit();
289}
290
291static void mch_write_config(PCIDevice *d,
292 uint32_t address, uint32_t val, int len)
293{
294 MCHPCIState *mch = MCH_PCI_DEVICE(d)((MCHPCIState *)object_dynamic_cast_assert(((Object *)((d))),
("mch"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 294, __func__));
295
296 /* XXX: implement SMRAM.D_LOCK */
297 pci_default_write_config(d, address, val, len);
298
299 if (ranges_overlap(address, len, MCH_HOST_BRIDGE_PAM00x90,
300 MCH_HOST_BRIDGE_PAM_SIZE7)) {
301 mch_update_pam(mch);
302 }
303
304 if (ranges_overlap(address, len, MCH_HOST_BRIDGE_PCIEXBAR0x60,
305 MCH_HOST_BRIDGE_PCIEXBAR_SIZE8)) {
306 mch_update_pciexbar(mch);
307 }
308
309 if (ranges_overlap(address, len, MCH_HOST_BRDIGE_SMRAM0x9d,
310 MCH_HOST_BRDIGE_SMRAM_SIZE1)) {
311 mch_update_smram(mch);
312 }
313}
314
315static void mch_update(MCHPCIState *mch)
316{
317 mch_update_pciexbar(mch);
318 mch_update_pam(mch);
319 mch_update_smram(mch);
320}
321
322static int mch_post_load(void *opaque, int version_id)
323{
324 MCHPCIState *mch = opaque;
325 mch_update(mch);
326 return 0;
327}
328
329static const VMStateDescription vmstate_mch = {
330 .name = "mch",
331 .version_id = 1,
332 .minimum_version_id = 1,
333 .minimum_version_id_old = 1,
334 .post_load = mch_post_load,
335 .fields = (VMStateField []) {
336 VMSTATE_PCI_DEVICE(parent_obj, MCHPCIState){ .name = ("parent_obj"), .size = sizeof(PCIDevice), .vmsd = &
vmstate_pci_device, .flags = VMS_STRUCT, .offset = (__builtin_offsetof
(MCHPCIState, parent_obj) + ((PCIDevice*)0 - (typeof(((MCHPCIState
*)0)->parent_obj)*)0)), },
337 VMSTATE_UINT8(smm_enabled, MCHPCIState){ .name = ("smm_enabled"), .version_id = (0), .field_exists =
(((void*)0)), .size = sizeof(uint8_t), .info = &(vmstate_info_uint8
), .flags = VMS_SINGLE, .offset = (__builtin_offsetof(MCHPCIState
, smm_enabled) + ((uint8_t*)0 - (typeof(((MCHPCIState *)0)->
smm_enabled)*)0)), },
338 VMSTATE_END_OF_LIST(){}
339 }
340};
341
342static void mch_reset(DeviceState *qdev)
343{
344 PCIDevice *d = PCI_DEVICE(qdev)((PCIDevice *)object_dynamic_cast_assert(((Object *)((qdev)))
, ("pci-device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 344, __func__));
345 MCHPCIState *mch = MCH_PCI_DEVICE(d)((MCHPCIState *)object_dynamic_cast_assert(((Object *)((d))),
("mch"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 345, __func__));
346
347 pci_set_quad(d->config + MCH_HOST_BRIDGE_PCIEXBAR0x60,
348 MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT0xb0000000);
349
350 d->config[MCH_HOST_BRDIGE_SMRAM0x9d] = MCH_HOST_BRIDGE_SMRAM_DEFAULT((uint8_t)0x2);
351
352 mch_update(mch);
353}
354
355static int mch_init(PCIDevice *d)
356{
357 int i;
358 MCHPCIState *mch = MCH_PCI_DEVICE(d)((MCHPCIState *)object_dynamic_cast_assert(((Object *)((d))),
("mch"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 358, __func__));
359
360 /* setup pci memory mapping */
361 pc_pci_as_mapping_init(OBJECT(mch)((Object *)(mch)), mch->system_memory,
362 mch->pci_address_space);
363
364 /* smram */
365 cpu_smm_register(&mch_set_smm, mch);
366 memory_region_init_alias(&mch->smram_region, OBJECT(mch)((Object *)(mch)), "smram-region",
367 mch->pci_address_space, 0xa0000, 0x20000);
368 memory_region_add_subregion_overlap(mch->system_memory, 0xa0000,
369 &mch->smram_region, 1);
370 memory_region_set_enabled(&mch->smram_region, false0);
371 init_pam(DEVICE(mch)((DeviceState *)object_dynamic_cast_assert(((Object *)((mch))
), ("device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 371, __func__)), mch->ram_memory, mch->system_memory, mch->pci_address_space,
372 &mch->pam_regions[0], PAM_BIOS_BASE0xf0000, PAM_BIOS_SIZE0x10000);
373 for (i = 0; i < 12; ++i) {
374 init_pam(DEVICE(mch)((DeviceState *)object_dynamic_cast_assert(((Object *)((mch))
), ("device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 374, __func__)), mch->ram_memory, mch->system_memory, mch->pci_address_space,
375 &mch->pam_regions[i+1], PAM_EXPAN_BASE0xc0000 + i * PAM_EXPAN_SIZE0x04000,
376 PAM_EXPAN_SIZE0x04000);
377 }
378 return 0;
379}
380
381uint64_t mch_mcfg_base(void)
382{
383 bool_Bool ambiguous;
384 Object *o = object_resolve_path_type("", TYPE_MCH_PCI_DEVICE"mch", &ambiguous);
385 if (!o) {
386 return 0;
387 }
388 return MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT0xb0000000;
389}
390
391static void mch_class_init(ObjectClass *klass, void *data)
392{
393 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass)((PCIDeviceClass *)object_class_dynamic_cast_assert(((ObjectClass
*)((klass))), ("pci-device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 393, __func__));
394 DeviceClass *dc = DEVICE_CLASS(klass)((DeviceClass *)object_class_dynamic_cast_assert(((ObjectClass
*)((klass))), ("device"), "/home/stefan/src/qemu/qemu.org/qemu/hw/pci-host/q35.c"
, 394, __func__));
395
396 k->init = mch_init;
397 k->config_write = mch_write_config;
398 dc->reset = mch_reset;
399 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
400 dc->desc = "Host bridge";
401 dc->vmsd = &vmstate_mch;
402 k->vendor_id = PCI_VENDOR_ID_INTEL0x8086;
403 k->device_id = PCI_DEVICE_ID_INTEL_Q35_MCH0x29c0;
404 k->revision = MCH_HOST_BRIDGE_REVISION_DEFAULT0x0;
405 k->class_id = PCI_CLASS_BRIDGE_HOST0x0600;
406 /*
407 * PCI-facing part of the host bridge, not usable without the
408 * host-facing part, which can't be device_add'ed, yet.
409 */
410 dc->cannot_instantiate_with_device_add_yet = true1;
411}
412
413static const TypeInfo mch_info = {
414 .name = TYPE_MCH_PCI_DEVICE"mch",
415 .parent = TYPE_PCI_DEVICE"pci-device",
416 .instance_size = sizeof(MCHPCIState),
417 .class_init = mch_class_init,
418};
419
420static void q35_register(void)
421{
422 type_register_static(&mch_info);
423 type_register_static(&q35_host_info);
424}
425
426type_init(q35_register)static void __attribute__((constructor)) do_qemu_init_q35_register
(void) { register_module_init(q35_register, MODULE_INIT_QOM);
};