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/qdev-properties.h"
  30 #include "hw/pci/pci.h"
  31 #include "hw/irq.h"
  32 #include "qapi/error.h"
  33 #include "qemu/module.h"
  34 #include "trace.h"
  35 #include "qom/object.h"
  36
  37 OBJECT_DECLARE_SIMPLE_TYPE(GrackleState, GRACKLE_PCI_HOST_BRIDGE)
  38
  39 struct GrackleState {
  40     PCIHostState parent_obj;
  41
  42     uint32_t ofw_addr;
  43     qemu_irq irqs[4];
  44     MemoryRegion pci_mmio;
  45     MemoryRegion pci_hole;
  46     MemoryRegion pci_io;
  47 };
  48
  49 /* Don't know if this matches real hardware, but it agrees with OHW.  */
  50 static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num)
  51 {
  52     return (irq_num + (pci_dev->devfn >> 3)) & 3;
  53 }
  54
  55 static void pci_grackle_set_irq(void *opaque, int irq_num, int level)
  56 {
  57     GrackleState *s = opaque;
  58
  59     trace_grackle_set_irq(irq_num, level);
  60     qemu_set_irq(s->irqs[irq_num], level);
  61 }
  62
  63 static void grackle_realize(DeviceState *dev, Error **errp)
  64 {
  65     GrackleState *s = GRACKLE_PCI_HOST_BRIDGE(dev);
  66     PCIHostState *phb = PCI_HOST_BRIDGE(dev);
  67
  68     phb->bus = pci_register_root_bus(dev, NULL,
  69                                      pci_grackle_set_irq,
  70                                      pci_grackle_map_irq,
  71                                      s,
  72                                      &s->pci_mmio,
  73                                      &s->pci_io,
  74                                      0, 4, TYPE_PCI_BUS);
  75
  76     pci_create_simple(phb->bus, 0, "grackle");
  77 }
  78
  79 static void grackle_init(Object *obj)
  80 {
  81     GrackleState *s = GRACKLE_PCI_HOST_BRIDGE(obj);
  82     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
  83     PCIHostState *phb = PCI_HOST_BRIDGE(obj);
  84
  85     memory_region_init(&s->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL);
  86     memory_region_init_io(&s->pci_io, OBJECT(s), &unassigned_io_ops, obj,
  87                           "pci-isa-mmio", 0x00200000);
  88
  89     memory_region_init_alias(&s->pci_hole, OBJECT(s), "pci-hole", &s->pci_mmio,
  90                              0x80000000ULL, 0x7e000000ULL);
  91
  92     memory_region_init_io(&phb->conf_mem, obj, &pci_host_conf_le_ops,
  93                           DEVICE(obj), "pci-conf-idx", 0x1000);
  94     memory_region_init_io(&phb->data_mem, obj, &pci_host_data_le_ops,
  95                           DEVICE(obj), "pci-data-idx", 0x1000);
  96
  97     sysbus_init_mmio(sbd, &phb->conf_mem);
  98     sysbus_init_mmio(sbd, &phb->data_mem);
  99     sysbus_init_mmio(sbd, &s->pci_hole);
 100     sysbus_init_mmio(sbd, &s->pci_io);
 101
 102     qdev_init_gpio_out(DEVICE(obj), s->irqs, ARRAY_SIZE(s->irqs));
 103 }
 104
 105 static void grackle_pci_realize(PCIDevice *d, Error **errp)
 106 {
 107     d->config[0x09] = 0x01;
 108 }
 109
 110 static void grackle_pci_class_init(ObjectClass *klass, void *data)
 111 {
 112     DeviceClass *dc = DEVICE_CLASS(klass);
 113     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 114
 115     k->realize   = grackle_pci_realize;
 116     k->vendor_id = PCI_VENDOR_ID_MOTOROLA;
 117     k->device_id = PCI_DEVICE_ID_MOTOROLA_MPC106;
 118     k->revision  = 0x00;
 119     k->class_id  = PCI_CLASS_BRIDGE_HOST;
 120     /*
 121      * PCI-facing part of the host bridge, not usable without the
 122      * host-facing part, which can't be device_add'ed, yet.
 123      */
 124     dc->user_creatable = false;
 125 }
 126
 127 static const TypeInfo grackle_pci_info = {
 128     .name          = "grackle",
 129     .parent        = TYPE_PCI_DEVICE,
 130     .instance_size = sizeof(PCIDevice),
 131     .class_init = grackle_pci_class_init,
 132     .interfaces = (InterfaceInfo[]) {
 133         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 134         { },
 135     },
 136 };
 137
 138 static char *grackle_ofw_unit_address(const SysBusDevice *dev)
 139 {
 140     GrackleState *s = GRACKLE_PCI_HOST_BRIDGE(dev);
 141
 142     return g_strdup_printf("%x", s->ofw_addr);
 143 }
 144
 145 static Property grackle_properties[] = {
 146     DEFINE_PROP_UINT32("ofw-addr", GrackleState, ofw_addr, -1),
 147     DEFINE_PROP_END_OF_LIST()
 148 };
 149
 150 static void grackle_class_init(ObjectClass *klass, void *data)
 151 {
 152     DeviceClass *dc = DEVICE_CLASS(klass);
 153     SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(klass);
 154
 155     dc->realize = grackle_realize;
 156     device_class_set_props(dc, grackle_properties);
 157     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 158     dc->fw_name = "pci";
 159     sbc->explicit_ofw_unit_address = grackle_ofw_unit_address;
 160 }
 161
 162 static const TypeInfo grackle_host_info = {
 163     .name          = TYPE_GRACKLE_PCI_HOST_BRIDGE,
 164     .parent        = TYPE_PCI_HOST_BRIDGE,
 165     .instance_size = sizeof(GrackleState),
 166     .instance_init = grackle_init,
 167     .class_init    = grackle_class_init,
 168 };
 169
 170 static void grackle_register_types(void)
 171 {
 172     type_register_static(&grackle_pci_info);
 173     type_register_static(&grackle_host_info);
 174 }
 175
 176 type_init(grackle_register_types)