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 */ 67