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 #define PCI_BRIDGE_DEV_PROP_CHASSIS_NR "chassis_nr" 32 #define PCI_BRIDGE_DEV_PROP_MSI "msi" 33 #define PCI_BRIDGE_DEV_PROP_SHPC "shpc" 34 35 int pci_bridge_ssvid_init(PCIDevice *dev, uint8_t offset, 36 uint16_t svid, uint16_t ssid, 37 Error **errp); 38 39 PCIDevice *pci_bridge_get_device(PCIBus *bus); 40 PCIBus *pci_bridge_get_sec_bus(PCIBridge *br); 41 42 pcibus_t pci_bridge_get_base(const PCIDevice *bridge, uint8_t type); 43 pcibus_t pci_bridge_get_limit(const PCIDevice *bridge, uint8_t type); 44 45 void pci_bridge_update_mappings(PCIBridge *br); 46 void pci_bridge_write_config(PCIDevice *d, 47 uint32_t address, uint32_t val, int len); 48 void pci_bridge_disable_base_limit(PCIDevice *dev); 49 void pci_bridge_reset(DeviceState *qdev); 50 51 void pci_bridge_initfn(PCIDevice *pci_dev, const char *typename); 52 void pci_bridge_exitfn(PCIDevice *pci_dev); 53 54 55 /* 56 * before qdev initialization(qdev_init()), this function sets bus_name and 57 * map_irq callback which are necessry for pci_bridge_initfn() to 58 * initialize bus. 59 */ 60 void pci_bridge_map_irq(PCIBridge *br, const char* bus_name, 61 pci_map_irq_fn map_irq); 62 63 /* TODO: add this define to pci_regs.h in linux and then in qemu. */ 64 #define PCI_BRIDGE_CTL_VGA_16BIT 0x10 /* VGA 16-bit decode */ 65 #define PCI_BRIDGE_CTL_DISCARD 0x100 /* Primary discard timer */ 66 #define PCI_BRIDGE_CTL_SEC_DISCARD 0x200 /* Secondary discard timer */ 67 #define PCI_BRIDGE_CTL_DISCARD_STATUS 0x400 /* Discard timer status */ 68 #define PCI_BRIDGE_CTL_DISCARD_SERR 0x800 /* Discard timer SERR# enable */ 69 70 typedef struct PCIBridgeQemuCap { 71 uint8_t id; /* Standard PCI capability header field */ 72 uint8_t next; /* Standard PCI capability header field */ 73 uint8_t len; /* Standard PCI vendor-specific capability header field */ 74 uint8_t type; /* Red Hat vendor-specific capability type. 75 Types are defined with REDHAT_PCI_CAP_ prefix */ 76 77 uint32_t bus_res; /* Minimum number of buses to reserve */ 78 uint64_t io; /* IO space to reserve */ 79 uint32_t mem; /* Non-prefetchable memory to reserve */ 80 /* At most one of the following two fields may be set to a value 81 * different from -1 */ 82 uint32_t mem_pref_32; /* Prefetchable memory to reserve (32-bit MMIO) */ 83 uint64_t mem_pref_64; /* Prefetchable memory to reserve (64-bit MMIO) */ 84 } PCIBridgeQemuCap; 85 86 #define REDHAT_PCI_CAP_RESOURCE_RESERVE 1 87 88 int pci_bridge_qemu_reserve_cap_init(PCIDevice *dev, int cap_offset, 89 uint32_t bus_reserve, uint64_t io_reserve, 90 uint32_t mem_non_pref_reserve, 91 uint32_t mem_pref_32_reserve, 92 uint64_t mem_pref_64_reserve, 93 Error **errp); 94 95 #endif /* QEMU_PCI_BRIDGE_H */ 96