include/hw/pci/pci_bridge.h

   1 /*
   2  * QEMU PCI bridge
   3  *
   4  * Copyright (c) 2004 Fabrice Bellard
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19  *
  20  * split out pci bus specific stuff from pci.[hc] to pci_bridge.[hc]
  21  * Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
  22  *                    VA Linux Systems Japan K.K.
  23  *
  24  */
  25
  26 #ifndef QEMU_PCI_BRIDGE_H
  27 #define QEMU_PCI_BRIDGE_H
  28
  29 #include "hw/pci/pci.h"
  30
  31 int pci_bridge_ssvid_init(PCIDevice *dev, uint8_t offset,
  32                           uint16_t svid, uint16_t ssid);
  33
  34 PCIDevice *pci_bridge_get_device(PCIBus *bus);
  35 PCIBus *pci_bridge_get_sec_bus(PCIBridge *br);
  36
  37 pcibus_t pci_bridge_get_base(const PCIDevice *bridge, uint8_t type);
  38 pcibus_t pci_bridge_get_limit(const PCIDevice *bridge, uint8_t type);
  39
  40 void pci_bridge_update_mappings(PCIBridge *br);
  41 void pci_bridge_write_config(PCIDevice *d,
  42                              uint32_t address, uint32_t val, int len);
  43 void pci_bridge_disable_base_limit(PCIDevice *dev);
  44 void pci_bridge_reset_reg(PCIDevice *dev);
  45 void pci_bridge_reset(DeviceState *qdev);
  46
  47 int pci_bridge_initfn(PCIDevice *pci_dev, const char *typename);
  48 void pci_bridge_exitfn(PCIDevice *pci_dev);
  49
  50
  51 /*
  52  * before qdev initialization(qdev_init()), this function sets bus_name and
  53  * map_irq callback which are necessry for pci_bridge_initfn() to
  54  * initialize bus.
  55  */
  56 void pci_bridge_map_irq(PCIBridge *br, const char* bus_name,
  57                         pci_map_irq_fn map_irq);
  58
  59 /* TODO: add this define to pci_regs.h in linux and then in qemu. */
  60 #define  PCI_BRIDGE_CTL_VGA_16BIT       0x10    /* VGA 16-bit decode */
  61 #define  PCI_BRIDGE_CTL_DISCARD         0x100   /* Primary discard timer */
  62 #define  PCI_BRIDGE_CTL_SEC_DISCARD     0x200   /* Secondary discard timer */
  63 #define  PCI_BRIDGE_CTL_DISCARD_STATUS  0x400   /* Discard timer status */
  64 #define  PCI_BRIDGE_CTL_DISCARD_SERR    0x800   /* Discard timer SERR# enable */
  65
  66 #endif  /* QEMU_PCI_BRIDGE_H */