hw/pci-bridge/dec.c

   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
  36 #define DEC_21154(obj) OBJECT_CHECK(DECState, (obj), TYPE_DEC_21154)
  37
  38 typedef struct DECState {
  39     PCIHostState parent_obj;
  40 } DECState;
  41
  42 static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
  43 {
  44     return irq_num;
  45 }
  46
  47 static void dec_pci_bridge_realize(PCIDevice *pci_dev, Error **errp)
  48 {
  49     pci_bridge_initfn(pci_dev, TYPE_PCI_BUS);
  50 }
  51
  52 static void dec_21154_pci_bridge_class_init(ObjectClass *klass, void *data)
  53 {
  54     DeviceClass *dc = DEVICE_CLASS(klass);
  55     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  56
  57     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
  58     k->realize = dec_pci_bridge_realize;
  59     k->exit = pci_bridge_exitfn;
  60     k->vendor_id = PCI_VENDOR_ID_DEC;
  61     k->device_id = PCI_DEVICE_ID_DEC_21154;
  62     k->config_write = pci_bridge_write_config;
  63     k->is_bridge = true;
  64     dc->desc = "DEC 21154 PCI-PCI bridge";
  65     dc->reset = pci_bridge_reset;
  66     dc->vmsd = &vmstate_pci_device;
  67 }
  68
  69 static const TypeInfo dec_21154_pci_bridge_info = {
  70     .name          = "dec-21154-p2p-bridge",
  71     .parent        = TYPE_PCI_BRIDGE,
  72     .instance_size = sizeof(PCIBridge),
  73     .class_init    = dec_21154_pci_bridge_class_init,
  74     .interfaces = (InterfaceInfo[]) {
  75         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
  76         { },
  77     },
  78 };
  79
  80 PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
  81 {
  82     PCIDevice *dev;
  83     PCIBridge *br;
  84
  85     dev = pci_new_multifunction(devfn, false, "dec-21154-p2p-bridge");
  86     br = PCI_BRIDGE(dev);
  87     pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
  88     pci_realize_and_unref(dev, parent_bus, &error_fatal);
  89     return pci_bridge_get_sec_bus(br);
  90 }
  91
  92 static void pci_dec_21154_device_realize(DeviceState *dev, Error **errp)
  93 {
  94     PCIHostState *phb;
  95     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
  96
  97     phb = PCI_HOST_BRIDGE(dev);
  98
  99     memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops,
 100                           dev, "pci-conf-idx", 0x1000);
 101     memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops,
 102                           dev, "pci-data-idx", 0x1000);
 103     sysbus_init_mmio(sbd, &phb->conf_mem);
 104     sysbus_init_mmio(sbd, &phb->data_mem);
 105 }
 106
 107 static void dec_21154_pci_host_realize(PCIDevice *d, Error **errp)
 108 {
 109     /* PCI2PCI bridge same values as PearPC - check this */
 110 }
 111
 112 static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data)
 113 {
 114     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 115     DeviceClass *dc = DEVICE_CLASS(klass);
 116
 117     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 118     k->realize = dec_21154_pci_host_realize;
 119     k->vendor_id = PCI_VENDOR_ID_DEC;
 120     k->device_id = PCI_DEVICE_ID_DEC_21154;
 121     k->revision = 0x02;
 122     k->class_id = PCI_CLASS_BRIDGE_PCI;
 123     k->is_bridge = true;
 124     /*
 125      * PCI-facing part of the host bridge, not usable without the
 126      * host-facing part, which can't be device_add'ed, yet.
 127      */
 128     dc->user_creatable = false;
 129 }
 130
 131 static const TypeInfo dec_21154_pci_host_info = {
 132     .name          = "dec-21154",
 133     .parent        = TYPE_PCI_DEVICE,
 134     .instance_size = sizeof(PCIDevice),
 135     .class_init    = dec_21154_pci_host_class_init,
 136     .interfaces = (InterfaceInfo[]) {
 137         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 138         { },
 139     },
 140 };
 141
 142 static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data)
 143 {
 144     DeviceClass *dc = DEVICE_CLASS(klass);
 145
 146     dc->realize = pci_dec_21154_device_realize;
 147 }
 148
 149 static const TypeInfo pci_dec_21154_device_info = {
 150     .name          = TYPE_DEC_21154,
 151     .parent        = TYPE_PCI_HOST_BRIDGE,
 152     .instance_size = sizeof(DECState),
 153     .class_init    = pci_dec_21154_device_class_init,
 154 };
 155
 156 static void dec_register_types(void)
 157 {
 158     type_register_static(&pci_dec_21154_device_info);
 159     type_register_static(&dec_21154_pci_host_info);
 160     type_register_static(&dec_21154_pci_bridge_info);
 161 }
 162
 163 type_init(dec_register_types)