hw/dec_pci.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_pci.h"
  27 #include "sysbus.h"
  28 #include "pci.h"
  29 #include "pci_host.h"
  30 #include "pci_bridge.h"
  31 #include "pci_internals.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 typedef struct DECState {
  44     SysBusDevice busdev;
  45     PCIHostState host_state;
  46 } DECState;
  47
  48 static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
  49 {
  50     return irq_num;
  51 }
  52
  53 static void dec_21154_pci_bridge_class_init(ObjectClass *klass, void *data)
  54 {
  55     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  56
  57     k->init = pci_bridge_initfn;
  58     k->exit = pci_bridge_exitfn;
  59     k->vendor_id = PCI_VENDOR_ID_DEC;
  60     k->device_id = PCI_DEVICE_ID_DEC_21154;
  61     k->config_write = pci_bridge_write_config;
  62     k->is_bridge = 1;
  63 }
  64
  65 static DeviceInfo dec_21154_pci_bridge_info = {
  66     .name = "dec-21154-p2p-bridge",
  67     .desc = "DEC 21154 PCI-PCI bridge",
  68     .size = sizeof(PCIBridge),
  69     .vmsd = &vmstate_pci_device,
  70     .reset = pci_bridge_reset,
  71     .class_init = dec_21154_pci_bridge_class_init,
  72 };
  73
  74 PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
  75 {
  76     PCIDevice *dev;
  77     PCIBridge *br;
  78
  79     dev = pci_create_multifunction(parent_bus, devfn, false,
  80                                    "dec-21154-p2p-bridge");
  81     br = DO_UPCAST(PCIBridge, dev, dev);
  82     pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq);
  83     qdev_init_nofail(&dev->qdev);
  84     return pci_bridge_get_sec_bus(br);
  85 }
  86
  87 static int pci_dec_21154_device_init(SysBusDevice *dev)
  88 {
  89     DECState *s;
  90
  91     s = FROM_SYSBUS(DECState, dev);
  92
  93     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
  94                           &s->host_state, "pci-conf-idx", 0x1000);
  95     memory_region_init_io(&s->host_state.data_mem, &pci_host_data_le_ops,
  96                           &s->host_state, "pci-data-idx", 0x1000);
  97     sysbus_init_mmio(dev, &s->host_state.conf_mem);
  98     sysbus_init_mmio(dev, &s->host_state.data_mem);
  99     return 0;
 100 }
 101
 102 static int dec_21154_pci_host_init(PCIDevice *d)
 103 {
 104     /* PCI2PCI bridge same values as PearPC - check this */
 105     return 0;
 106 }
 107
 108 static void dec_21154_pci_host_class_init(ObjectClass *klass, void *data)
 109 {
 110     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 111
 112     k->init = dec_21154_pci_host_init;
 113     k->vendor_id = PCI_VENDOR_ID_DEC;
 114     k->device_id = PCI_DEVICE_ID_DEC_21154;
 115     k->revision = 0x02;
 116     k->class_id = PCI_CLASS_BRIDGE_PCI;
 117     k->is_bridge = 1;
 118 }
 119
 120 static DeviceInfo dec_21154_pci_host_info = {
 121     .name = "dec-21154",
 122     .size = sizeof(PCIDevice),
 123     .class_init = dec_21154_pci_host_class_init,
 124 };
 125
 126 static void pci_dec_21154_device_class_init(ObjectClass *klass, void *data)
 127 {
 128     SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
 129
 130     sdc->init = pci_dec_21154_device_init;
 131 }
 132
 133 static DeviceInfo pci_dec_21154_device_info = {
 134     .name = "dec-21154-sysbus",
 135     .size = sizeof(DECState),
 136     .class_init = pci_dec_21154_device_class_init,
 137 };
 138
 139 static void dec_register_devices(void)
 140 {
 141     sysbus_qdev_register(&pci_dec_21154_device_info);
 142     pci_qdev_register(&dec_21154_pci_host_info);
 143     pci_qdev_register(&dec_21154_pci_bridge_info);
 144 }
 145
 146 device_init(dec_register_devices)