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 <inttypes.h> 31 #include <qemu/typedefs.h> 32 #include "hw/pci/pci.h" /* for PCIHotplugState */ 33 34 typedef struct AcpiPciHpPciStatus { 35 uint32_t up; /* deprecated, maintained for migration compatibility */ 36 uint32_t down; 37 uint32_t hotplug_enable; 38 uint32_t device_present; 39 } AcpiPciHpPciStatus; 40 41 #define ACPI_PCIHP_PROP_BSEL "acpi-pcihp-bsel" 42 #define ACPI_PCIHP_MAX_HOTPLUG_BUS 256 43 44 typedef struct AcpiPciHpState { 45 AcpiPciHpPciStatus acpi_pcihp_pci_status[ACPI_PCIHP_MAX_HOTPLUG_BUS]; 46 uint32_t hotplug_select; 47 PCIBus *root; 48 MemoryRegion io; 49 } AcpiPciHpState; 50 51 void acpi_pcihp_init(AcpiPciHpState *, PCIBus *root, 52 MemoryRegion *address_space_io); 53 54 /* Invoke on device hotplug */ 55 int acpi_pcihp_device_hotplug(AcpiPciHpState *, PCIDevice *, 56 PCIHotplugState state); 57 58 /* Called on reset */ 59 void acpi_pcihp_reset(AcpiPciHpState *s); 60 61 extern const VMStateDescription vmstate_acpi_pcihp_pci_status; 62 63 #define VMSTATE_PCI_HOTPLUG(pcihp, state, test_pcihp) \ 64 VMSTATE_UINT32_TEST(pcihp.hotplug_select, state, \ 65 test_pcihp), \ 66 VMSTATE_STRUCT_ARRAY_TEST(pcihp.acpi_pcihp_pci_status, state, \ 67 ACPI_PCIHP_MAX_HOTPLUG_BUS, \ 68 test_pcihp, 1, \ 69 vmstate_acpi_pcihp_pci_status, \ 70 AcpiPciHpPciStatus) 71 72 #endif 73