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 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 <qemu/typedefs.h> 31 #include "hw/acpi/acpi.h" 32 #include "migration/vmstate.h" 33 34 #define ACPI_PCIHP_IO_BASE_PROP "acpi-pcihp-io-base" 35 #define ACPI_PCIHP_IO_LEN_PROP "acpi-pcihp-io-len" 36 37 typedef struct AcpiPciHpPciStatus { 38 uint32_t up; 39 uint32_t down; 40 uint32_t hotplug_enable; 41 } AcpiPciHpPciStatus; 42 43 #define ACPI_PCIHP_PROP_BSEL "acpi-pcihp-bsel" 44 #define ACPI_PCIHP_MAX_HOTPLUG_BUS 256 45 #define ACPI_PCIHP_BSEL_DEFAULT 0x0 46 47 typedef struct AcpiPciHpState { 48 AcpiPciHpPciStatus acpi_pcihp_pci_status[ACPI_PCIHP_MAX_HOTPLUG_BUS]; 49 uint32_t hotplug_select; 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 60 void acpi_pcihp_device_plug_cb(ACPIREGS *ar, qemu_irq irq, AcpiPciHpState *s, 61 DeviceState *dev, Error **errp); 62 void acpi_pcihp_device_unplug_cb(ACPIREGS *ar, qemu_irq irq, AcpiPciHpState *s, 63 DeviceState *dev, Error **errp); 64 65 /* Called on reset */ 66 void acpi_pcihp_reset(AcpiPciHpState *s); 67 68 extern const VMStateDescription vmstate_acpi_pcihp_pci_status; 69 70 #define VMSTATE_PCI_HOTPLUG(pcihp, state, test_pcihp) \ 71 VMSTATE_UINT32_TEST(pcihp.hotplug_select, state, \ 72 test_pcihp), \ 73 VMSTATE_STRUCT_ARRAY_TEST(pcihp.acpi_pcihp_pci_status, state, \ 74 ACPI_PCIHP_MAX_HOTPLUG_BUS, \ 75 test_pcihp, 1, \ 76 vmstate_acpi_pcihp_pci_status, \ 77 AcpiPciHpPciStatus) 78 79 #endif 80