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 "hw/intc/heathrow_pic.h"
  31 #include "qapi/error.h"
  32 #include "trace.h"
  33
  34 #define GRACKLE_PCI_HOST_BRIDGE(obj) \
  35     OBJECT_CHECK(GrackleState, (obj), TYPE_GRACKLE_PCI_HOST_BRIDGE)
  36
  37 typedef struct GrackleState {
  38     PCIHostState parent_obj;
  39
  40     HeathrowState *pic;
  41     qemu_irq irqs[4];
  42     MemoryRegion pci_mmio;
  43     MemoryRegion pci_hole;
  44     MemoryRegion pci_io;
  45 } GrackleState;
  46
  47 /* Don't know if this matches real hardware, but it agrees with OHW.  */
  48 static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num)
  49 {
  50     return (irq_num + (pci_dev->devfn >> 3)) & 3;
  51 }
  52
  53 static void pci_grackle_set_irq(void *opaque, int irq_num, int level)
  54 {
  55     GrackleState *s = opaque;
  56
  57     trace_grackle_set_irq(irq_num, level);
  58     qemu_set_irq(s->irqs[irq_num], level);
  59 }
  60
  61 static void grackle_init_irqs(GrackleState *s)
  62 {
  63     int i;
  64
  65     for (i = 0; i < ARRAY_SIZE(s->irqs); i++) {
  66         s->irqs[i] = qdev_get_gpio_in(DEVICE(s->pic), 0x15 + i);
  67     }
  68 }
  69
  70 static void grackle_realize(DeviceState *dev, Error **errp)
  71 {
  72     GrackleState *s = GRACKLE_PCI_HOST_BRIDGE(dev);
  73     PCIHostState *phb = PCI_HOST_BRIDGE(dev);
  74
  75     phb->bus = pci_register_root_bus(dev, NULL,
  76                                      pci_grackle_set_irq,
  77                                      pci_grackle_map_irq,
  78                                      s,
  79                                      &s->pci_mmio,
  80                                      &s->pci_io,
  81                                      0, 4, TYPE_PCI_BUS);
  82
  83     pci_create_simple(phb->bus, 0, "grackle");
  84     grackle_init_irqs(s);
  85 }
  86
  87 static void grackle_init(Object *obj)
  88 {
  89     GrackleState *s = GRACKLE_PCI_HOST_BRIDGE(obj);
  90     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
  91     PCIHostState *phb = PCI_HOST_BRIDGE(obj);
  92
  93     memory_region_init(&s->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL);
  94     memory_region_init_io(&s->pci_io, OBJECT(s), &unassigned_io_ops, obj,
  95                           "pci-isa-mmio", 0x00200000);
  96
  97     memory_region_init_alias(&s->pci_hole, OBJECT(s), "pci-hole", &s->pci_mmio,
  98                              0x80000000ULL, 0x7e000000ULL);
  99
 100     memory_region_init_io(&phb->conf_mem, obj, &pci_host_conf_le_ops,
 101                           DEVICE(obj), "pci-conf-idx", 0x1000);
 102     memory_region_init_io(&phb->data_mem, obj, &pci_host_data_le_ops,
 103                           DEVICE(obj), "pci-data-idx", 0x1000);
 104
 105     object_property_add_link(obj, "pic", TYPE_HEATHROW,
 106                              (Object **) &s->pic,
 107                              qdev_prop_allow_set_link_before_realize,
 108                              0, NULL);
 109
 110     sysbus_init_mmio(sbd, &phb->conf_mem);
 111     sysbus_init_mmio(sbd, &phb->data_mem);
 112     sysbus_init_mmio(sbd, &s->pci_hole);
 113     sysbus_init_mmio(sbd, &s->pci_io);
 114 }
 115
 116 static void grackle_pci_realize(PCIDevice *d, Error **errp)
 117 {
 118     d->config[0x09] = 0x01;
 119 }
 120
 121 static void grackle_pci_class_init(ObjectClass *klass, void *data)
 122 {
 123     DeviceClass *dc = DEVICE_CLASS(klass);
 124     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 125
 126     k->realize   = grackle_pci_realize;
 127     k->vendor_id = PCI_VENDOR_ID_MOTOROLA;
 128     k->device_id = PCI_DEVICE_ID_MOTOROLA_MPC106;
 129     k->revision  = 0x00;
 130     k->class_id  = PCI_CLASS_BRIDGE_HOST;
 131     /*
 132      * PCI-facing part of the host bridge, not usable without the
 133      * host-facing part, which can't be device_add'ed, yet.
 134      */
 135     dc->user_creatable = false;
 136 }
 137
 138 static const TypeInfo grackle_pci_info = {
 139     .name          = "grackle",
 140     .parent        = TYPE_PCI_DEVICE,
 141     .instance_size = sizeof(PCIDevice),
 142     .class_init = grackle_pci_class_init,
 143     .interfaces = (InterfaceInfo[]) {
 144         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 145         { },
 146     },
 147 };
 148
 149 static void grackle_class_init(ObjectClass *klass, void *data)
 150 {
 151     DeviceClass *dc = DEVICE_CLASS(klass);
 152
 153     dc->realize = grackle_realize;
 154     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 155 }
 156
 157 static const TypeInfo grackle_host_info = {
 158     .name          = TYPE_GRACKLE_PCI_HOST_BRIDGE,
 159     .parent        = TYPE_PCI_HOST_BRIDGE,
 160     .instance_size = sizeof(GrackleState),
 161     .instance_init = grackle_init,
 162     .class_init    = grackle_class_init,
 163 };
 164
 165 static void grackle_register_types(void)
 166 {
 167     type_register_static(&grackle_pci_info);
 168     type_register_static(&grackle_host_info);
 169 }
 170
 171 type_init(grackle_register_types)