Merge tag 'fixes-pull-request' of gitlab.com:marcandre.lureau/qemu into staging
[qemu.git] / include / hw / acpi / pcihp.h
1 /*
2 * QEMU<->ACPI BIOS PCI hotplug interface
3 *
4 * QEMU supports PCI hotplug via ACPI. This module
5 * implements the interface between QEMU and the ACPI BIOS.
6 * Interface specification - see docs/specs/acpi_pci_hotplug.txt
7 *
8 * Copyright (c) 2013, Red Hat Inc, Michael S. Tsirkin (mst@redhat.com)
9 * Copyright (c) 2006 Fabrice Bellard
10 *
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License version 2.1 as published by the Free Software Foundation.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, see <http://www.gnu.org/licenses/>
22 *
23 * Contributions after 2012-01-13 are licensed under the terms of the
24 * GNU GPL, version 2 or (at your option) any later version.
25 */
26
27 #ifndef HW_ACPI_PCIHP_H
28 #define HW_ACPI_PCIHP_H
29
30 #include "hw/acpi/acpi.h"
31 #include "hw/hotplug.h"
32
33 #define ACPI_PCIHP_IO_BASE_PROP "acpi-pcihp-io-base"
34 #define ACPI_PCIHP_IO_LEN_PROP "acpi-pcihp-io-len"
35
36 typedef struct AcpiPciHpPciStatus {
37 uint32_t up;
38 uint32_t down;
39 uint32_t hotplug_enable;
40 } AcpiPciHpPciStatus;
41
42 #define ACPI_PCIHP_PROP_BSEL "acpi-pcihp-bsel"
43 #define ACPI_PCIHP_MAX_HOTPLUG_BUS 256
44 #define ACPI_PCIHP_BSEL_DEFAULT 0x0
45
46 typedef struct AcpiPciHpState {
47 AcpiPciHpPciStatus acpi_pcihp_pci_status[ACPI_PCIHP_MAX_HOTPLUG_BUS];
48 uint32_t hotplug_select;
49 uint32_t acpi_index;
50 PCIBus *root;
51 MemoryRegion io;
52 bool legacy_piix;
53 uint16_t io_base;
54 uint16_t io_len;
55 } AcpiPciHpState;
56
57 void acpi_pcihp_init(Object *owner, AcpiPciHpState *, PCIBus *root,
58 MemoryRegion *address_space_io, bool bridges_enabled,
59 uint16_t io_base);
60
61 void acpi_pcihp_device_pre_plug_cb(HotplugHandler *hotplug_dev,
62 DeviceState *dev, Error **errp);
63 void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
64 DeviceState *dev, Error **errp);
65 void acpi_pcihp_device_unplug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
66 DeviceState *dev, Error **errp);
67 void acpi_pcihp_device_unplug_request_cb(HotplugHandler *hotplug_dev,
68 AcpiPciHpState *s, DeviceState *dev,
69 Error **errp);
70
71 /* Called on reset */
72 void acpi_pcihp_reset(AcpiPciHpState *s, bool acpihp_root_off);
73
74 extern const VMStateDescription vmstate_acpi_pcihp_pci_status;
75
76 #define VMSTATE_PCI_HOTPLUG(pcihp, state, test_pcihp, test_acpi_index) \
77 VMSTATE_UINT32_TEST(pcihp.hotplug_select, state, \
78 test_pcihp), \
79 VMSTATE_STRUCT_ARRAY_TEST(pcihp.acpi_pcihp_pci_status, state, \
80 ACPI_PCIHP_MAX_HOTPLUG_BUS, \
81 test_pcihp, 1, \
82 vmstate_acpi_pcihp_pci_status, \
83 AcpiPciHpPciStatus), \
84 VMSTATE_UINT32_TEST(pcihp.acpi_index, state, \
85 test_acpi_index)
86
87 #endif