xref: /openbmc/qemu/hw/acpi/pcihp.c (revision f5855994fee2f8815dc86b8453e4a63e290aea05)
1db4728e6SMichael S. Tsirkin /*
2db4728e6SMichael S. Tsirkin  * QEMU<->ACPI BIOS PCI hotplug interface
3db4728e6SMichael S. Tsirkin  *
4db4728e6SMichael S. Tsirkin  * QEMU supports PCI hotplug via ACPI. This module
5db4728e6SMichael S. Tsirkin  * implements the interface between QEMU and the ACPI BIOS.
6db4728e6SMichael S. Tsirkin  * Interface specification - see docs/specs/acpi_pci_hotplug.txt
7db4728e6SMichael S. Tsirkin  *
8db4728e6SMichael S. Tsirkin  * Copyright (c) 2013, Red Hat Inc, Michael S. Tsirkin (mst@redhat.com)
9db4728e6SMichael S. Tsirkin  * Copyright (c) 2006 Fabrice Bellard
10db4728e6SMichael S. Tsirkin  *
11db4728e6SMichael S. Tsirkin  * This library is free software; you can redistribute it and/or
12db4728e6SMichael S. Tsirkin  * modify it under the terms of the GNU Lesser General Public
13db4728e6SMichael S. Tsirkin  * License version 2 as published by the Free Software Foundation.
14db4728e6SMichael S. Tsirkin  *
15db4728e6SMichael S. Tsirkin  * This library is distributed in the hope that it will be useful,
16db4728e6SMichael S. Tsirkin  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17db4728e6SMichael S. Tsirkin  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18db4728e6SMichael S. Tsirkin  * Lesser General Public License for more details.
19db4728e6SMichael S. Tsirkin  *
20db4728e6SMichael S. Tsirkin  * You should have received a copy of the GNU Lesser General Public
21db4728e6SMichael S. Tsirkin  * License along with this library; if not, see <http://www.gnu.org/licenses/>
22db4728e6SMichael S. Tsirkin  *
23db4728e6SMichael S. Tsirkin  * Contributions after 2012-01-13 are licensed under the terms of the
24db4728e6SMichael S. Tsirkin  * GNU GPL, version 2 or (at your option) any later version.
25db4728e6SMichael S. Tsirkin  */
26db4728e6SMichael S. Tsirkin 
27b6a0aa05SPeter Maydell #include "qemu/osdep.h"
28db4728e6SMichael S. Tsirkin #include "hw/acpi/pcihp.h"
29db4728e6SMichael S. Tsirkin 
30db4728e6SMichael S. Tsirkin #include "hw/hw.h"
31db4728e6SMichael S. Tsirkin #include "hw/i386/pc.h"
32db4728e6SMichael S. Tsirkin #include "hw/pci/pci.h"
33db4728e6SMichael S. Tsirkin #include "hw/acpi/acpi.h"
34db4728e6SMichael S. Tsirkin #include "sysemu/sysemu.h"
35db4728e6SMichael S. Tsirkin #include "exec/ioport.h"
36db4728e6SMichael S. Tsirkin #include "exec/address-spaces.h"
37db4728e6SMichael S. Tsirkin #include "hw/pci/pci_bus.h"
38da34e65cSMarkus Armbruster #include "qapi/error.h"
39db4728e6SMichael S. Tsirkin #include "qom/qom-qobject.h"
40db4728e6SMichael S. Tsirkin 
41db4728e6SMichael S. Tsirkin //#define DEBUG
42db4728e6SMichael S. Tsirkin 
43db4728e6SMichael S. Tsirkin #ifdef DEBUG
44db4728e6SMichael S. Tsirkin # define ACPI_PCIHP_DPRINTF(format, ...)     printf(format, ## __VA_ARGS__)
45db4728e6SMichael S. Tsirkin #else
46db4728e6SMichael S. Tsirkin # define ACPI_PCIHP_DPRINTF(format, ...)     do { } while (0)
47db4728e6SMichael S. Tsirkin #endif
48db4728e6SMichael S. Tsirkin 
49e358edc8SIgor Mammedov #define ACPI_PCIHP_ADDR 0xae00
50e358edc8SIgor Mammedov #define ACPI_PCIHP_SIZE 0x0014
51a7b613cfSIgor Mammedov #define PCI_UP_BASE 0x0000
52a7b613cfSIgor Mammedov #define PCI_DOWN_BASE 0x0004
53a7b613cfSIgor Mammedov #define PCI_EJ_BASE 0x0008
54a7b613cfSIgor Mammedov #define PCI_RMV_BASE 0x000c
55a7b613cfSIgor Mammedov #define PCI_SEL_BASE 0x0010
56db4728e6SMichael S. Tsirkin 
57db4728e6SMichael S. Tsirkin typedef struct AcpiPciHpFind {
58db4728e6SMichael S. Tsirkin     int bsel;
59db4728e6SMichael S. Tsirkin     PCIBus *bus;
60db4728e6SMichael S. Tsirkin } AcpiPciHpFind;
61db4728e6SMichael S. Tsirkin 
62db4728e6SMichael S. Tsirkin static int acpi_pcihp_get_bsel(PCIBus *bus)
63db4728e6SMichael S. Tsirkin {
647c38ecd0SKirill Batuzov     Error *local_err = NULL;
65c03d83d5SMarc-André Lureau     uint64_t bsel = object_property_get_uint(OBJECT(bus), ACPI_PCIHP_PROP_BSEL,
667c38ecd0SKirill Batuzov                                              &local_err);
677c38ecd0SKirill Batuzov 
68c03d83d5SMarc-André Lureau     if (local_err || bsel >= ACPI_PCIHP_MAX_HOTPLUG_BUS) {
697c38ecd0SKirill Batuzov         if (local_err) {
707c38ecd0SKirill Batuzov             error_free(local_err);
71db4728e6SMichael S. Tsirkin         }
72db4728e6SMichael S. Tsirkin         return -1;
737c38ecd0SKirill Batuzov     } else {
74db4728e6SMichael S. Tsirkin         return bsel;
75db4728e6SMichael S. Tsirkin     }
767c38ecd0SKirill Batuzov }
77db4728e6SMichael S. Tsirkin 
78db4728e6SMichael S. Tsirkin static void acpi_pcihp_test_hotplug_bus(PCIBus *bus, void *opaque)
79db4728e6SMichael S. Tsirkin {
80db4728e6SMichael S. Tsirkin     AcpiPciHpFind *find = opaque;
81db4728e6SMichael S. Tsirkin     if (find->bsel == acpi_pcihp_get_bsel(bus)) {
82db4728e6SMichael S. Tsirkin         find->bus = bus;
83db4728e6SMichael S. Tsirkin     }
84db4728e6SMichael S. Tsirkin }
85db4728e6SMichael S. Tsirkin 
86db4728e6SMichael S. Tsirkin static PCIBus *acpi_pcihp_find_hotplug_bus(AcpiPciHpState *s, int bsel)
87db4728e6SMichael S. Tsirkin {
88db4728e6SMichael S. Tsirkin     AcpiPciHpFind find = { .bsel = bsel, .bus = NULL };
89db4728e6SMichael S. Tsirkin 
90db4728e6SMichael S. Tsirkin     if (bsel < 0) {
91db4728e6SMichael S. Tsirkin         return NULL;
92db4728e6SMichael S. Tsirkin     }
93db4728e6SMichael S. Tsirkin 
94db4728e6SMichael S. Tsirkin     pci_for_each_bus(s->root, acpi_pcihp_test_hotplug_bus, &find);
95db4728e6SMichael S. Tsirkin 
96db4728e6SMichael S. Tsirkin     /* Make bsel 0 eject root bus if bsel property is not set,
97db4728e6SMichael S. Tsirkin      * for compatibility with non acpi setups.
98db4728e6SMichael S. Tsirkin      * TODO: really needed?
99db4728e6SMichael S. Tsirkin      */
100db4728e6SMichael S. Tsirkin     if (!bsel && !find.bus) {
101db4728e6SMichael S. Tsirkin         find.bus = s->root;
102db4728e6SMichael S. Tsirkin     }
103db4728e6SMichael S. Tsirkin     return find.bus;
104db4728e6SMichael S. Tsirkin }
105db4728e6SMichael S. Tsirkin 
106db4728e6SMichael S. Tsirkin static bool acpi_pcihp_pc_no_hotplug(AcpiPciHpState *s, PCIDevice *dev)
107db4728e6SMichael S. Tsirkin {
108db4728e6SMichael S. Tsirkin     PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
1092897ae02SIgor Mammedov     DeviceClass *dc = DEVICE_GET_CLASS(dev);
110db4728e6SMichael S. Tsirkin     /*
111db4728e6SMichael S. Tsirkin      * ACPI doesn't allow hotplug of bridge devices.  Don't allow
112db4728e6SMichael S. Tsirkin      * hot-unplug of bridge devices unless they were added by hotplug
113db4728e6SMichael S. Tsirkin      * (and so, not described by acpi).
114db4728e6SMichael S. Tsirkin      */
1152897ae02SIgor Mammedov     return (pc->is_bridge && !dev->qdev.hotplugged) || !dc->hotpluggable;
116db4728e6SMichael S. Tsirkin }
117db4728e6SMichael S. Tsirkin 
118db4728e6SMichael S. Tsirkin static void acpi_pcihp_eject_slot(AcpiPciHpState *s, unsigned bsel, unsigned slots)
119db4728e6SMichael S. Tsirkin {
120db4728e6SMichael S. Tsirkin     BusChild *kid, *next;
121786a4ea8SStefan Hajnoczi     int slot = ctz32(slots);
122db4728e6SMichael S. Tsirkin     PCIBus *bus = acpi_pcihp_find_hotplug_bus(s, bsel);
123db4728e6SMichael S. Tsirkin 
124db4728e6SMichael S. Tsirkin     if (!bus) {
125db4728e6SMichael S. Tsirkin         return;
126db4728e6SMichael S. Tsirkin     }
127db4728e6SMichael S. Tsirkin 
128db4728e6SMichael S. Tsirkin     /* Mark request as complete */
129db4728e6SMichael S. Tsirkin     s->acpi_pcihp_pci_status[bsel].down &= ~(1U << slot);
1305a2223caSMichael S. Tsirkin     s->acpi_pcihp_pci_status[bsel].up &= ~(1U << slot);
131db4728e6SMichael S. Tsirkin 
132db4728e6SMichael S. Tsirkin     QTAILQ_FOREACH_SAFE(kid, &bus->qbus.children, sibling, next) {
133db4728e6SMichael S. Tsirkin         DeviceState *qdev = kid->child;
134db4728e6SMichael S. Tsirkin         PCIDevice *dev = PCI_DEVICE(qdev);
135db4728e6SMichael S. Tsirkin         if (PCI_SLOT(dev->devfn) == slot) {
1365a2223caSMichael S. Tsirkin             if (!acpi_pcihp_pc_no_hotplug(s, dev)) {
137db4728e6SMichael S. Tsirkin                 object_unparent(OBJECT(qdev));
138db4728e6SMichael S. Tsirkin             }
139db4728e6SMichael S. Tsirkin         }
140db4728e6SMichael S. Tsirkin     }
141db4728e6SMichael S. Tsirkin }
142db4728e6SMichael S. Tsirkin 
143db4728e6SMichael S. Tsirkin static void acpi_pcihp_update_hotplug_bus(AcpiPciHpState *s, int bsel)
144db4728e6SMichael S. Tsirkin {
145db4728e6SMichael S. Tsirkin     BusChild *kid, *next;
146db4728e6SMichael S. Tsirkin     PCIBus *bus = acpi_pcihp_find_hotplug_bus(s, bsel);
147db4728e6SMichael S. Tsirkin 
148db4728e6SMichael S. Tsirkin     /* Execute any pending removes during reset */
149db4728e6SMichael S. Tsirkin     while (s->acpi_pcihp_pci_status[bsel].down) {
150db4728e6SMichael S. Tsirkin         acpi_pcihp_eject_slot(s, bsel, s->acpi_pcihp_pci_status[bsel].down);
151db4728e6SMichael S. Tsirkin     }
152db4728e6SMichael S. Tsirkin 
153db4728e6SMichael S. Tsirkin     s->acpi_pcihp_pci_status[bsel].hotplug_enable = ~0;
154db4728e6SMichael S. Tsirkin 
155db4728e6SMichael S. Tsirkin     if (!bus) {
156db4728e6SMichael S. Tsirkin         return;
157db4728e6SMichael S. Tsirkin     }
158db4728e6SMichael S. Tsirkin     QTAILQ_FOREACH_SAFE(kid, &bus->qbus.children, sibling, next) {
159db4728e6SMichael S. Tsirkin         DeviceState *qdev = kid->child;
160db4728e6SMichael S. Tsirkin         PCIDevice *pdev = PCI_DEVICE(qdev);
161db4728e6SMichael S. Tsirkin         int slot = PCI_SLOT(pdev->devfn);
162db4728e6SMichael S. Tsirkin 
163db4728e6SMichael S. Tsirkin         if (acpi_pcihp_pc_no_hotplug(s, pdev)) {
164db4728e6SMichael S. Tsirkin             s->acpi_pcihp_pci_status[bsel].hotplug_enable &= ~(1U << slot);
165db4728e6SMichael S. Tsirkin         }
166db4728e6SMichael S. Tsirkin     }
167db4728e6SMichael S. Tsirkin }
168db4728e6SMichael S. Tsirkin 
169db4728e6SMichael S. Tsirkin static void acpi_pcihp_update(AcpiPciHpState *s)
170db4728e6SMichael S. Tsirkin {
171db4728e6SMichael S. Tsirkin     int i;
172db4728e6SMichael S. Tsirkin 
173db4728e6SMichael S. Tsirkin     for (i = 0; i < ACPI_PCIHP_MAX_HOTPLUG_BUS; ++i) {
174db4728e6SMichael S. Tsirkin         acpi_pcihp_update_hotplug_bus(s, i);
175db4728e6SMichael S. Tsirkin     }
176db4728e6SMichael S. Tsirkin }
177db4728e6SMichael S. Tsirkin 
178db4728e6SMichael S. Tsirkin void acpi_pcihp_reset(AcpiPciHpState *s)
179db4728e6SMichael S. Tsirkin {
180db4728e6SMichael S. Tsirkin     acpi_pcihp_update(s);
181db4728e6SMichael S. Tsirkin }
182db4728e6SMichael S. Tsirkin 
1830058c082SIgor Mammedov void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
184c24d5e0bSIgor Mammedov                                DeviceState *dev, Error **errp)
185db4728e6SMichael S. Tsirkin {
186c24d5e0bSIgor Mammedov     PCIDevice *pdev = PCI_DEVICE(dev);
187c24d5e0bSIgor Mammedov     int slot = PCI_SLOT(pdev->devfn);
188c24d5e0bSIgor Mammedov     int bsel = acpi_pcihp_get_bsel(pdev->bus);
189db4728e6SMichael S. Tsirkin     if (bsel < 0) {
190c24d5e0bSIgor Mammedov         error_setg(errp, "Unsupported bus. Bus doesn't have property '"
191c24d5e0bSIgor Mammedov                    ACPI_PCIHP_PROP_BSEL "' set");
192c24d5e0bSIgor Mammedov         return;
193db4728e6SMichael S. Tsirkin     }
194db4728e6SMichael S. Tsirkin 
195db4728e6SMichael S. Tsirkin     /* Don't send event when device is enabled during qemu machine creation:
196db4728e6SMichael S. Tsirkin      * it is present on boot, no hotplug event is necessary. We do send an
197db4728e6SMichael S. Tsirkin      * event when the device is disabled later. */
198c24d5e0bSIgor Mammedov     if (!dev->hotplugged) {
199c24d5e0bSIgor Mammedov         return;
200db4728e6SMichael S. Tsirkin     }
201db4728e6SMichael S. Tsirkin 
2028f5001f9SIgor Mammedov     s->acpi_pcihp_pci_status[bsel].up |= (1U << slot);
2030058c082SIgor Mammedov     acpi_send_event(DEVICE(hotplug_dev), ACPI_PCI_HOTPLUG_STATUS);
204db4728e6SMichael S. Tsirkin }
205db4728e6SMichael S. Tsirkin 
2060058c082SIgor Mammedov void acpi_pcihp_device_unplug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
207c24d5e0bSIgor Mammedov                                  DeviceState *dev, Error **errp)
208c24d5e0bSIgor Mammedov {
209c24d5e0bSIgor Mammedov     PCIDevice *pdev = PCI_DEVICE(dev);
210c24d5e0bSIgor Mammedov     int slot = PCI_SLOT(pdev->devfn);
211c24d5e0bSIgor Mammedov     int bsel = acpi_pcihp_get_bsel(pdev->bus);
212c24d5e0bSIgor Mammedov     if (bsel < 0) {
213c24d5e0bSIgor Mammedov         error_setg(errp, "Unsupported bus. Bus doesn't have property '"
214c24d5e0bSIgor Mammedov                    ACPI_PCIHP_PROP_BSEL "' set");
215c24d5e0bSIgor Mammedov         return;
216c24d5e0bSIgor Mammedov     }
217c24d5e0bSIgor Mammedov 
218c24d5e0bSIgor Mammedov     s->acpi_pcihp_pci_status[bsel].down |= (1U << slot);
2190058c082SIgor Mammedov     acpi_send_event(DEVICE(hotplug_dev), ACPI_PCI_HOTPLUG_STATUS);
220db4728e6SMichael S. Tsirkin }
221db4728e6SMichael S. Tsirkin 
222db4728e6SMichael S. Tsirkin static uint64_t pci_read(void *opaque, hwaddr addr, unsigned int size)
223db4728e6SMichael S. Tsirkin {
224db4728e6SMichael S. Tsirkin     AcpiPciHpState *s = opaque;
225db4728e6SMichael S. Tsirkin     uint32_t val = 0;
226db4728e6SMichael S. Tsirkin     int bsel = s->hotplug_select;
227db4728e6SMichael S. Tsirkin 
228fa365d7cSGonglei     if (bsel < 0 || bsel >= ACPI_PCIHP_MAX_HOTPLUG_BUS) {
229db4728e6SMichael S. Tsirkin         return 0;
230db4728e6SMichael S. Tsirkin     }
231db4728e6SMichael S. Tsirkin 
232db4728e6SMichael S. Tsirkin     switch (addr) {
233a7b613cfSIgor Mammedov     case PCI_UP_BASE:
2345a2223caSMichael S. Tsirkin         val = s->acpi_pcihp_pci_status[bsel].up;
23599d09dd3SIgor Mammedov         if (!s->legacy_piix) {
2365a2223caSMichael S. Tsirkin             s->acpi_pcihp_pci_status[bsel].up = 0;
23799d09dd3SIgor Mammedov         }
238db4728e6SMichael S. Tsirkin         ACPI_PCIHP_DPRINTF("pci_up_read %" PRIu32 "\n", val);
239db4728e6SMichael S. Tsirkin         break;
240a7b613cfSIgor Mammedov     case PCI_DOWN_BASE:
241db4728e6SMichael S. Tsirkin         val = s->acpi_pcihp_pci_status[bsel].down;
242db4728e6SMichael S. Tsirkin         ACPI_PCIHP_DPRINTF("pci_down_read %" PRIu32 "\n", val);
243db4728e6SMichael S. Tsirkin         break;
244a7b613cfSIgor Mammedov     case PCI_EJ_BASE:
245db4728e6SMichael S. Tsirkin         /* No feature defined yet */
246db4728e6SMichael S. Tsirkin         ACPI_PCIHP_DPRINTF("pci_features_read %" PRIu32 "\n", val);
247db4728e6SMichael S. Tsirkin         break;
248a7b613cfSIgor Mammedov     case PCI_RMV_BASE:
249db4728e6SMichael S. Tsirkin         val = s->acpi_pcihp_pci_status[bsel].hotplug_enable;
250db4728e6SMichael S. Tsirkin         ACPI_PCIHP_DPRINTF("pci_rmv_read %" PRIu32 "\n", val);
251db4728e6SMichael S. Tsirkin         break;
252a7b613cfSIgor Mammedov     case PCI_SEL_BASE:
253db4728e6SMichael S. Tsirkin         val = s->hotplug_select;
254db4728e6SMichael S. Tsirkin         ACPI_PCIHP_DPRINTF("pci_sel_read %" PRIu32 "\n", val);
255db4728e6SMichael S. Tsirkin     default:
256db4728e6SMichael S. Tsirkin         break;
257db4728e6SMichael S. Tsirkin     }
258db4728e6SMichael S. Tsirkin 
259db4728e6SMichael S. Tsirkin     return val;
260db4728e6SMichael S. Tsirkin }
261db4728e6SMichael S. Tsirkin 
262db4728e6SMichael S. Tsirkin static void pci_write(void *opaque, hwaddr addr, uint64_t data,
263db4728e6SMichael S. Tsirkin                       unsigned int size)
264db4728e6SMichael S. Tsirkin {
265db4728e6SMichael S. Tsirkin     AcpiPciHpState *s = opaque;
266db4728e6SMichael S. Tsirkin     switch (addr) {
267a7b613cfSIgor Mammedov     case PCI_EJ_BASE:
268db4728e6SMichael S. Tsirkin         if (s->hotplug_select >= ACPI_PCIHP_MAX_HOTPLUG_BUS) {
269db4728e6SMichael S. Tsirkin             break;
270db4728e6SMichael S. Tsirkin         }
271db4728e6SMichael S. Tsirkin         acpi_pcihp_eject_slot(s, s->hotplug_select, data);
272db4728e6SMichael S. Tsirkin         ACPI_PCIHP_DPRINTF("pciej write %" HWADDR_PRIx " <== %" PRIu64 "\n",
273db4728e6SMichael S. Tsirkin                       addr, data);
274db4728e6SMichael S. Tsirkin         break;
275a7b613cfSIgor Mammedov     case PCI_SEL_BASE:
276*f5855994SAnthony PERARD         s->hotplug_select = s->legacy_piix ? ACPI_PCIHP_BSEL_DEFAULT : data;
277db4728e6SMichael S. Tsirkin         ACPI_PCIHP_DPRINTF("pcisel write %" HWADDR_PRIx " <== %" PRIu64 "\n",
278db4728e6SMichael S. Tsirkin                       addr, data);
279db4728e6SMichael S. Tsirkin     default:
280db4728e6SMichael S. Tsirkin         break;
281db4728e6SMichael S. Tsirkin     }
282db4728e6SMichael S. Tsirkin }
283db4728e6SMichael S. Tsirkin 
284db4728e6SMichael S. Tsirkin static const MemoryRegionOps acpi_pcihp_io_ops = {
285db4728e6SMichael S. Tsirkin     .read = pci_read,
286db4728e6SMichael S. Tsirkin     .write = pci_write,
287db4728e6SMichael S. Tsirkin     .endianness = DEVICE_LITTLE_ENDIAN,
288db4728e6SMichael S. Tsirkin     .valid = {
289db4728e6SMichael S. Tsirkin         .min_access_size = 4,
290db4728e6SMichael S. Tsirkin         .max_access_size = 4,
291db4728e6SMichael S. Tsirkin     },
292db4728e6SMichael S. Tsirkin };
293db4728e6SMichael S. Tsirkin 
29478c2d872SIgor Mammedov void acpi_pcihp_init(Object *owner, AcpiPciHpState *s, PCIBus *root_bus,
29599d09dd3SIgor Mammedov                      MemoryRegion *address_space_io, bool bridges_enabled)
296db4728e6SMichael S. Tsirkin {
29778c2d872SIgor Mammedov     s->io_len = ACPI_PCIHP_SIZE;
29878c2d872SIgor Mammedov     s->io_base = ACPI_PCIHP_ADDR;
299e358edc8SIgor Mammedov 
300db4728e6SMichael S. Tsirkin     s->root= root_bus;
30199d09dd3SIgor Mammedov     s->legacy_piix = !bridges_enabled;
302e358edc8SIgor Mammedov 
30378c2d872SIgor Mammedov     memory_region_init_io(&s->io, owner, &acpi_pcihp_io_ops, s,
30478c2d872SIgor Mammedov                           "acpi-pci-hotplug", s->io_len);
30578c2d872SIgor Mammedov     memory_region_add_subregion(address_space_io, s->io_base, &s->io);
30678c2d872SIgor Mammedov 
30778c2d872SIgor Mammedov     object_property_add_uint16_ptr(owner, ACPI_PCIHP_IO_BASE_PROP, &s->io_base,
30878c2d872SIgor Mammedov                                    &error_abort);
30978c2d872SIgor Mammedov     object_property_add_uint16_ptr(owner, ACPI_PCIHP_IO_LEN_PROP, &s->io_len,
31078c2d872SIgor Mammedov                                    &error_abort);
311db4728e6SMichael S. Tsirkin }
312db4728e6SMichael S. Tsirkin 
313db4728e6SMichael S. Tsirkin const VMStateDescription vmstate_acpi_pcihp_pci_status = {
314db4728e6SMichael S. Tsirkin     .name = "acpi_pcihp_pci_status",
315db4728e6SMichael S. Tsirkin     .version_id = 1,
316db4728e6SMichael S. Tsirkin     .minimum_version_id = 1,
317db4728e6SMichael S. Tsirkin     .fields = (VMStateField[]) {
318db4728e6SMichael S. Tsirkin         VMSTATE_UINT32(up, AcpiPciHpPciStatus),
319db4728e6SMichael S. Tsirkin         VMSTATE_UINT32(down, AcpiPciHpPciStatus),
320db4728e6SMichael S. Tsirkin         VMSTATE_END_OF_LIST()
321db4728e6SMichael S. Tsirkin     }
322db4728e6SMichael S. Tsirkin };
323