dec.c (5254B)
1 /* 2 * QEMU DEC 21154 PCI bridge 3 * 4 * Copyright (c) 2006-2007 Fabrice Bellard 5 * Copyright (c) 2007 Jocelyn Mayer 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 26 #include "qemu/osdep.h" 27 #include "dec.h" 28 #include "hw/sysbus.h" 29 #include "qapi/error.h" 30 #include "qemu/module.h" 31 #include "hw/pci/pci.h" 32 #include "hw/pci/pci_host.h" 33 #include "hw/pci/pci_bridge.h" 34 #include "hw/pci/pci_bus.h" 35 #include "qom/object.h" 36 37 OBJECT_DECLARE_SIMPLE_TYPE(DECState, DEC_21154) 38 39 struct DECState { 40 PCIHostState parent_obj; 41 }; 42 43 static int dec_map_irq(PCIDevice *pci_dev, int irq_num) 44 { 45 return irq_num; 46 } 47 48 static void dec_pci_bridge_realize(PCIDevice *pci_dev, Error **errp) 49 { 50 pci_bridge_initfn(pci_dev, TYPE_PCI_BUS); 51 } 52 53 static void dec_21154_pci_bridge_class_init(ObjectClass *klass, void *data) 54 { 55 DeviceClass *dc = DEVICE_CLASS(klass); 56 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 57 58 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 59 k->realize = dec_pci_bridge_realize; 60 k->exit = pci_bridge_exitfn; 61 k->vendor_id = PCI_VENDOR_ID_DEC; 62 k->device_id = PCI_DEVICE_ID_DEC_21154; 63 k->config_write = pci_bridge_write_config; 64 k->is_bridge = true; 65 dc->desc = "DEC 21154 PCI-PCI bridge"; 66 dc->reset = pci_bridge_reset; 67 dc->vmsd = &vmstate_pci_device; 68 } 69 70 static const TypeInfo dec_21154_pci_bridge_info = { 71 .name = "dec-21154-p2p-bridge", 72 .parent = TYPE_PCI_BRIDGE, 73 .instance_size = sizeof(PCIBridge), 74 .class_init = dec_21154_pci_bridge_class_init, 75 .interfaces = (InterfaceInfo[]) { 76 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 77 { }, 78 }, 79 }; 80 81 PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn) 82 { 83 PCIDevice *dev; 84 PCIBridge *br; 85 86 dev = pci_new_multifunction(devfn, false, "dec-21154-p2p-bridge"); 87 br = PCI_BRIDGE(dev); 88 pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq); 89 pci_realize_and_unref(dev, parent_bus, &error_fatal); 90 return pci_bridge_get_sec_bus(br); 91 } 92 93 static void pci_dec_21154_device_realize(DeviceState *dev, Error **errp) 94 { 95 PCIHostState *phb; 96 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 97 98 phb = PCI_HOST_BRIDGE(dev); 99 100 memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops, 101 dev, "pci-conf-idx", 0x1000); 102 memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops, 103 dev, "pci-data-idx", 0x1000); 104 sysbus_init_mmio(sbd, &phb->conf_mem); 105 sysbus_init_mmio(sbd, &phb->data_mem); 106 } 107 108 static void dec_21154_pci_host_realize(PCIDevice *d, Error **errp) 109 { 110 /* PCI2PCI bridge same values as PearPC - check this */ 111 } 112 113 static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data) 114 { 115 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 116 DeviceClass *dc = DEVICE_CLASS(klass); 117 118 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 119 k->realize = dec_21154_pci_host_realize; 120 k->vendor_id = PCI_VENDOR_ID_DEC; 121 k->device_id = PCI_DEVICE_ID_DEC_21154; 122 k->revision = 0x02; 123 k->class_id = PCI_CLASS_BRIDGE_PCI; 124 k->is_bridge = true; 125 /* 126 * PCI-facing part of the host bridge, not usable without the 127 * host-facing part, which can't be device_add'ed, yet. 128 */ 129 dc->user_creatable = false; 130 } 131 132 static const TypeInfo dec_21154_pci_host_info = { 133 .name = "dec-21154", 134 .parent = TYPE_PCI_DEVICE, 135 .instance_size = sizeof(PCIDevice), 136 .class_init = dec_21154_pci_host_class_init, 137 .interfaces = (InterfaceInfo[]) { 138 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 139 { }, 140 }, 141 }; 142 143 static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data) 144 { 145 DeviceClass *dc = DEVICE_CLASS(klass); 146 147 dc->realize = pci_dec_21154_device_realize; 148 } 149 150 static const TypeInfo pci_dec_21154_device_info = { 151 .name = TYPE_DEC_21154, 152 .parent = TYPE_PCI_HOST_BRIDGE, 153 .instance_size = sizeof(DECState), 154 .class_init = pci_dec_21154_device_class_init, 155 }; 156 157 static void dec_register_types(void) 158 { 159 type_register_static(&pci_dec_21154_device_info); 160 type_register_static(&dec_21154_pci_host_info); 161 type_register_static(&dec_21154_pci_bridge_info); 162 } 163 164 type_init(dec_register_types)