LXR qemu/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 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 "migration/vmstate.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
  36typedef 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
  46typedef struct AcpiPciHpState {
  47    AcpiPciHpPciStatus acpi_pcihp_pci_status[ACPI_PCIHP_MAX_HOTPLUG_BUS];
  48    uint32_t hotplug_select;
  49    PCIBus *root;
  50    MemoryRegion io;
  51    bool legacy_piix;
  52    uint16_t io_base;
  53    uint16_t io_len;
  54} AcpiPciHpState;
  55
  56void acpi_pcihp_init(Object *owner, AcpiPciHpState *, PCIBus *root,
  57                     MemoryRegion *address_space_io, bool bridges_enabled);
  58
  59void acpi_pcihp_device_plug_cb(ACPIREGS *ar, qemu_irq irq, AcpiPciHpState *s,
  60                               DeviceState *dev, Error **errp);
  61void acpi_pcihp_device_unplug_cb(ACPIREGS *ar, qemu_irq irq, AcpiPciHpState *s,
  62                                 DeviceState *dev, Error **errp);
  63
  64/* Called on reset */
  65void acpi_pcihp_reset(AcpiPciHpState *s);
  66
  67extern const VMStateDescription vmstate_acpi_pcihp_pci_status;
  68
  69#define VMSTATE_PCI_HOTPLUG(pcihp, state, test_pcihp) \
  70        VMSTATE_UINT32_TEST(pcihp.hotplug_select, state, \
  71                            test_pcihp), \
  72        VMSTATE_STRUCT_ARRAY_TEST(pcihp.acpi_pcihp_pci_status, state, \
  73                                  ACPI_PCIHP_MAX_HOTPLUG_BUS, \
  74                                  test_pcihp, 1, \
  75                                  vmstate_acpi_pcihp_pci_status, \
  76                                  AcpiPciHpPciStatus)
  77
  78#endif
  79