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 "hw/pci/pci.h"
  30 #include "hw/pci/pci_host.h"
  31 #include "hw/pci/pci_bridge.h"
  32 #include "hw/pci/pci_bus.h"
  33
  34 /* debug DEC */
  35 //#define DEBUG_DEC
  36
  37 #ifdef DEBUG_DEC
  38 #define DEC_DPRINTF(fmt, ...)                               \
  39     do { printf("DEC: " fmt , ## __VA_ARGS__); } while (0)
  40 #else
  41 #define DEC_DPRINTF(fmt, ...)
  42 #endif
  43
  44 #define DEC_21154(obj) OBJECT_CHECK(DECState, (obj), TYPE_DEC_21154)
  45
  46 typedef struct DECState {
  47     PCIHostState parent_obj;
  48 } DECState;
  49
  50 static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
  51 {
  52     return irq_num;
  53 }
  54
  55 static void dec_pci_bridge_realize(PCIDevice *pci_dev, Error **errp)
  56 {
  57     pci_bridge_initfn(pci_dev, TYPE_PCI_BUS);
  58 }
  59
  60 static void dec_21154_pci_bridge_class_init(ObjectClass *klass, void *data)
  61 {
  62     DeviceClass *dc = DEVICE_CLASS(klass);
  63     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  64
  65     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
  66     k->realize = dec_pci_bridge_realize;
  67     k->exit = pci_bridge_exitfn;
  68     k->vendor_id = PCI_VENDOR_ID_DEC;
  69     k->device_id = PCI_DEVICE_ID_DEC_21154;
  70     k->config_write = pci_bridge_write_config;
  71     k->is_bridge = 1;
  72     dc->desc = "DEC 21154 PCI-PCI bridge";
  73     dc->reset = pci_bridge_reset;
  74     dc->vmsd = &vmstate_pci_device;
  75 }
  76
  77 static const TypeInfo dec_21154_pci_bridge_info = {
  78     .name          = "dec-21154-p2p-bridge",
  79     .parent        = TYPE_PCI_BRIDGE,
  80     .instance_size = sizeof(PCIBridge),
  81     .class_init    = dec_21154_pci_bridge_class_init,
  82     .interfaces = (InterfaceInfo[]) {
  83         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
  84         { },
  85     },
  86 };
  87
  88 PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
  89 {
  90     PCIDevice *dev;
  91     PCIBridge *br;
  92
  93     dev = pci_create_multifunction(parent_bus, devfn, false,
  94                                    "dec-21154-p2p-bridge");
  95     br = PCI_BRIDGE(dev);
  96     pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
  97     qdev_init_nofail(&dev->qdev);
  98     return pci_bridge_get_sec_bus(br);
  99 }
 100
 101 static int pci_dec_21154_device_init(SysBusDevice *dev)
 102 {
 103     PCIHostState *phb;
 104
 105     phb = PCI_HOST_BRIDGE(dev);
 106
 107     memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops,
 108                           dev, "pci-conf-idx", 0x1000);
 109     memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops,
 110                           dev, "pci-data-idx", 0x1000);
 111     sysbus_init_mmio(dev, &phb->conf_mem);
 112     sysbus_init_mmio(dev, &phb->data_mem);
 113     return 0;
 114 }
 115
 116 static void dec_21154_pci_host_realize(PCIDevice *d, Error **errp)
 117 {
 118     /* PCI2PCI bridge same values as PearPC - check this */
 119 }
 120
 121 static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data)
 122 {
 123     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 124     DeviceClass *dc = DEVICE_CLASS(klass);
 125
 126     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 127     k->realize = dec_21154_pci_host_realize;
 128     k->vendor_id = PCI_VENDOR_ID_DEC;
 129     k->device_id = PCI_DEVICE_ID_DEC_21154;
 130     k->revision = 0x02;
 131     k->class_id = PCI_CLASS_BRIDGE_PCI;
 132     k->is_bridge = 1;
 133     /*
 134      * PCI-facing part of the host bridge, not usable without the
 135      * host-facing part, which can't be device_add'ed, yet.
 136      */
 137     dc->user_creatable = false;
 138 }
 139
 140 static const TypeInfo dec_21154_pci_host_info = {
 141     .name          = "dec-21154",
 142     .parent        = TYPE_PCI_DEVICE,
 143     .instance_size = sizeof(PCIDevice),
 144     .class_init    = dec_21154_pci_host_class_init,
 145     .interfaces = (InterfaceInfo[]) {
 146         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 147         { },
 148     },
 149 };
 150
 151 static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data)
 152 {
 153     SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
 154
 155     sdc->init = pci_dec_21154_device_init;
 156 }
 157
 158 static const TypeInfo pci_dec_21154_device_info = {
 159     .name          = TYPE_DEC_21154,
 160     .parent        = TYPE_PCI_HOST_BRIDGE,
 161     .instance_size = sizeof(DECState),
 162     .class_init    = pci_dec_21154_device_class_init,
 163 };
 164
 165 static void dec_register_types(void)
 166 {
 167     type_register_static(&pci_dec_21154_device_info);
 168     type_register_static(&dec_21154_pci_host_info);
 169     type_register_static(&dec_21154_pci_bridge_info);
 170 }
 171
 172 type_init(dec_register_types)