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