hw/pci-host/grackle.c

   1 /*
   2  * QEMU Grackle PCI host (heathrow OldWorld PowerMac)
   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 "hw/pci/pci_host.h"
  28 #include "hw/ppc/mac.h"
  29 #include "hw/pci/pci.h"
  30 #include "trace.h"
  31
  32 #define GRACKLE_PCI_HOST_BRIDGE(obj) \
  33     OBJECT_CHECK(GrackleState, (obj), TYPE_GRACKLE_PCI_HOST_BRIDGE)
  34
  35 typedef struct GrackleState {
  36     PCIHostState parent_obj;
  37
  38     MemoryRegion pci_mmio;
  39     MemoryRegion pci_hole;
  40 } GrackleState;
  41
  42 /* Don't know if this matches real hardware, but it agrees with OHW.  */
  43 static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num)
  44 {
  45     return (irq_num + (pci_dev->devfn >> 3)) & 3;
  46 }
  47
  48 static void pci_grackle_set_irq(void *opaque, int irq_num, int level)
  49 {
  50     qemu_irq *pic = opaque;
  51
  52     trace_grackle_set_irq(irq_num, level);
  53     qemu_set_irq(pic[irq_num + 0x15], level);
  54 }
  55
  56 PCIBus *pci_grackle_init(uint32_t base, qemu_irq *pic,
  57                          MemoryRegion *address_space_mem,
  58                          MemoryRegion *address_space_io)
  59 {
  60     DeviceState *dev;
  61     SysBusDevice *s;
  62     PCIHostState *phb;
  63     GrackleState *d;
  64
  65     dev = qdev_create(NULL, TYPE_GRACKLE_PCI_HOST_BRIDGE);
  66     s = SYS_BUS_DEVICE(dev);
  67     phb = PCI_HOST_BRIDGE(dev);
  68     d = GRACKLE_PCI_HOST_BRIDGE(dev);
  69
  70     memory_region_init(&d->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL);
  71     memory_region_init_alias(&d->pci_hole, OBJECT(s), "pci-hole", &d->pci_mmio,
  72                              0x80000000ULL, 0x7e000000ULL);
  73     memory_region_add_subregion(address_space_mem, 0x80000000ULL,
  74                                 &d->pci_hole);
  75
  76     phb->bus = pci_register_root_bus(dev, NULL,
  77                                      pci_grackle_set_irq,
  78                                      pci_grackle_map_irq,
  79                                      pic,
  80                                      &d->pci_mmio,
  81                                      address_space_io,
  82                                      0, 4, TYPE_PCI_BUS);
  83
  84     pci_create_simple(phb->bus, 0, "grackle");
  85     qdev_init_nofail(dev);
  86
  87     sysbus_mmio_map(s, 0, base);
  88     sysbus_mmio_map(s, 1, base + 0x00200000);
  89
  90     return phb->bus;
  91 }
  92
  93 static int pci_grackle_init_device(SysBusDevice *dev)
  94 {
  95     PCIHostState *phb;
  96
  97     phb = PCI_HOST_BRIDGE(dev);
  98
  99     memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops,
 100                           dev, "pci-conf-idx", 0x1000);
 101     memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops,
 102                           dev, "pci-data-idx", 0x1000);
 103     sysbus_init_mmio(dev, &phb->conf_mem);
 104     sysbus_init_mmio(dev, &phb->data_mem);
 105
 106     return 0;
 107 }
 108
 109 static void grackle_pci_host_realize(PCIDevice *d, Error **errp)
 110 {
 111     d->config[0x09] = 0x01;
 112 }
 113
 114 static void grackle_pci_class_init(ObjectClass *klass, void *data)
 115 {
 116     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 117     DeviceClass *dc = DEVICE_CLASS(klass);
 118
 119     k->realize   = grackle_pci_host_realize;
 120     k->vendor_id = PCI_VENDOR_ID_MOTOROLA;
 121     k->device_id = PCI_DEVICE_ID_MOTOROLA_MPC106;
 122     k->revision  = 0x00;
 123     k->class_id  = PCI_CLASS_BRIDGE_HOST;
 124     /*
 125      * PCI-facing part of the host bridge, not usable without the
 126      * host-facing part, which can't be device_add'ed, yet.
 127      */
 128     dc->user_creatable = false;
 129 }
 130
 131 static const TypeInfo grackle_pci_info = {
 132     .name          = "grackle",
 133     .parent        = TYPE_PCI_DEVICE,
 134     .instance_size = sizeof(PCIDevice),
 135     .class_init = grackle_pci_class_init,
 136     .interfaces = (InterfaceInfo[]) {
 137         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 138         { },
 139     },
 140 };
 141
 142 static void pci_grackle_class_init(ObjectClass *klass, void *data)
 143 {
 144     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 145     DeviceClass *dc = DEVICE_CLASS(klass);
 146
 147     k->init = pci_grackle_init_device;
 148     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 149 }
 150
 151 static const TypeInfo grackle_pci_host_info = {
 152     .name          = TYPE_GRACKLE_PCI_HOST_BRIDGE,
 153     .parent        = TYPE_PCI_HOST_BRIDGE,
 154     .instance_size = sizeof(GrackleState),
 155     .class_init    = pci_grackle_class_init,
 156 };
 157
 158 static void grackle_register_types(void)
 159 {
 160     type_register_static(&grackle_pci_info);
 161     type_register_static(&grackle_pci_host_info);
 162 }
 163
 164 type_init(grackle_register_types)