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 "qemu/module.h"
  30 #include "hw/pci/pci.h"
  31 #include "hw/pci/pci_host.h"
  32 #include "hw/pci/pci_bridge.h"
  33 #include "hw/pci/pci_bus.h"
  34
  35 /* debug DEC */
  36 //#define DEBUG_DEC
  37
  38 #ifdef DEBUG_DEC
  39 #define DEC_DPRINTF(fmt, ...)                               \
  40     do { printf("DEC: " fmt , ## __VA_ARGS__); } while (0)
  41 #else
  42 #define DEC_DPRINTF(fmt, ...)
  43 #endif
  44
  45 #define DEC_21154(obj) OBJECT_CHECK(DECState, (obj), TYPE_DEC_21154)
  46
  47 typedef struct DECState {
  48     PCIHostState parent_obj;
  49 } DECState;
  50
  51 static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
  52 {
  53     return irq_num;
  54 }
  55
  56 static void dec_pci_bridge_realize(PCIDevice *pci_dev, Error **errp)
  57 {
  58     pci_bridge_initfn(pci_dev, TYPE_PCI_BUS);
  59 }
  60
  61 static void dec_21154_pci_bridge_class_init(ObjectClass *klass, void *data)
  62 {
  63     DeviceClass *dc = DEVICE_CLASS(klass);
  64     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  65
  66     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
  67     k->realize = dec_pci_bridge_realize;
  68     k->exit = pci_bridge_exitfn;
  69     k->vendor_id = PCI_VENDOR_ID_DEC;
  70     k->device_id = PCI_DEVICE_ID_DEC_21154;
  71     k->config_write = pci_bridge_write_config;
  72     k->is_bridge = true;
  73     dc->desc = "DEC 21154 PCI-PCI bridge";
  74     dc->reset = pci_bridge_reset;
  75     dc->vmsd = &vmstate_pci_device;
  76 }
  77
  78 static const TypeInfo dec_21154_pci_bridge_info = {
  79     .name          = "dec-21154-p2p-bridge",
  80     .parent        = TYPE_PCI_BRIDGE,
  81     .instance_size = sizeof(PCIBridge),
  82     .class_init    = dec_21154_pci_bridge_class_init,
  83     .interfaces = (InterfaceInfo[]) {
  84         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
  85         { },
  86     },
  87 };
  88
  89 PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
  90 {
  91     PCIDevice *dev;
  92     PCIBridge *br;
  93
  94     dev = pci_create_multifunction(parent_bus, devfn, false,
  95                                    "dec-21154-p2p-bridge");
  96     br = PCI_BRIDGE(dev);
  97     pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
  98     qdev_init_nofail(&dev->qdev);
  99     return pci_bridge_get_sec_bus(br);
 100 }
 101
 102 static void pci_dec_21154_device_realize(DeviceState *dev, Error **errp)
 103 {
 104     PCIHostState *phb;
 105     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
 106
 107     phb = PCI_HOST_BRIDGE(dev);
 108
 109     memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops,
 110                           dev, "pci-conf-idx", 0x1000);
 111     memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops,
 112                           dev, "pci-data-idx", 0x1000);
 113     sysbus_init_mmio(sbd, &phb->conf_mem);
 114     sysbus_init_mmio(sbd, &phb->data_mem);
 115 }
 116
 117 static void dec_21154_pci_host_realize(PCIDevice *d, Error **errp)
 118 {
 119     /* PCI2PCI bridge same values as PearPC - check this */
 120 }
 121
 122 static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data)
 123 {
 124     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 125     DeviceClass *dc = DEVICE_CLASS(klass);
 126
 127     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 128     k->realize = dec_21154_pci_host_realize;
 129     k->vendor_id = PCI_VENDOR_ID_DEC;
 130     k->device_id = PCI_DEVICE_ID_DEC_21154;
 131     k->revision = 0x02;
 132     k->class_id = PCI_CLASS_BRIDGE_PCI;
 133     k->is_bridge = true;
 134     /*
 135      * PCI-facing part of the host bridge, not usable without the
 136      * host-facing part, which can't be device_add'ed, yet.
 137      */
 138     dc->user_creatable = false;
 139 }
 140
 141 static const TypeInfo dec_21154_pci_host_info = {
 142     .name          = "dec-21154",
 143     .parent        = TYPE_PCI_DEVICE,
 144     .instance_size = sizeof(PCIDevice),
 145     .class_init    = dec_21154_pci_host_class_init,
 146     .interfaces = (InterfaceInfo[]) {
 147         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 148         { },
 149     },
 150 };
 151
 152 static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data)
 153 {
 154     DeviceClass *dc = DEVICE_CLASS(klass);
 155
 156     dc->realize = pci_dec_21154_device_realize;
 157 }
 158
 159 static const TypeInfo pci_dec_21154_device_info = {
 160     .name          = TYPE_DEC_21154,
 161     .parent        = TYPE_PCI_HOST_BRIDGE,
 162     .instance_size = sizeof(DECState),
 163     .class_init    = pci_dec_21154_device_class_init,
 164 };
 165
 166 static void dec_register_types(void)
 167 {
 168     type_register_static(&pci_dec_21154_device_info);
 169     type_register_static(&dec_21154_pci_host_info);
 170     type_register_static(&dec_21154_pci_bridge_info);
 171 }
 172
 173 type_init(dec_register_types)