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
  31 /* debug DEC */
  32 //#define DEBUG_DEC
  33
  34 #ifdef DEBUG_DEC
  35 #define DEC_DPRINTF(fmt, ...)                               \
  36     do { printf("DEC: " fmt , ## __VA_ARGS__); } while (0)
  37 #else
  38 #define DEC_DPRINTF(fmt, ...)
  39 #endif
  40
  41 typedef struct DECState {
  42     SysBusDevice busdev;
  43     PCIHostState host_state;
  44 } DECState;
  45
  46 static int dec_map_irq(PCIDevice *pci_dev, int irq_num)
  47 {
  48     return irq_num;
  49 }
  50
  51 PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn)
  52 {
  53     DeviceState *dev;
  54     PCIBus *ret;
  55
  56     dev = qdev_create(NULL, "dec-21154");
  57     qdev_init_nofail(dev);
  58     ret = pci_bridge_init(parent_bus, devfn,
  59                           PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21154,
  60                           dec_map_irq, "DEC 21154 PCI-PCI bridge");
  61
  62     return ret;
  63 }
  64
  65 static int pci_dec_21154_init_device(SysBusDevice *dev)
  66 {
  67     DECState *s;
  68     int pci_mem_config, pci_mem_data;
  69
  70     s = FROM_SYSBUS(DECState, dev);
  71
  72     pci_mem_config = pci_host_conf_register_mmio(&s->host_state, 1);
  73     pci_mem_data = pci_host_data_register_mmio(&s->host_state, 1);
  74     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
  75     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
  76     return 0;
  77 }
  78
  79 static int dec_21154_pci_host_init(PCIDevice *d)
  80 {
  81     /* PCI2PCI bridge same values as PearPC - check this */
  82     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_DEC);
  83     pci_config_set_device_id(d->config, PCI_DEVICE_ID_DEC_21154);
  84     pci_set_byte(d->config + PCI_REVISION_ID, 0x02);
  85     pci_config_set_class(d->config, PCI_CLASS_BRIDGE_PCI);
  86     return 0;
  87 }
  88
  89 static PCIDeviceInfo dec_21154_pci_host_info = {
  90     .qdev.name = "dec-21154",
  91     .qdev.size = sizeof(PCIDevice),
  92     .init      = dec_21154_pci_host_init,
  93     .header_type  = PCI_HEADER_TYPE_BRIDGE,
  94 };
  95
  96 static void dec_register_devices(void)
  97 {
  98     sysbus_register_dev("dec-21154", sizeof(DECState),
  99                         pci_dec_21154_init_device);
 100     pci_qdev_register(&dec_21154_pci_host_info);
 101 }
 102
 103 device_init(dec_register_devices)