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/intc/heathrow_pic.h"
  32 #include "hw/irq.h"
  33 #include "qapi/error.h"
  34 #include "qemu/module.h"
  35 #include "trace.h"
  36
  37 #define GRACKLE_PCI_HOST_BRIDGE(obj) \
  38     OBJECT_CHECK(GrackleState, (obj), TYPE_GRACKLE_PCI_HOST_BRIDGE)
  39
  40 typedef struct GrackleState {
  41     PCIHostState parent_obj;
  42
  43     uint32_t ofw_addr;
  44     HeathrowState *pic;
  45     qemu_irq irqs[4];
  46     MemoryRegion pci_mmio;
  47     MemoryRegion pci_hole;
  48     MemoryRegion pci_io;
  49 } GrackleState;
  50
  51 /* Don't know if this matches real hardware, but it agrees with OHW.  */
  52 static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num)
  53 {
  54     return (irq_num + (pci_dev->devfn >> 3)) & 3;
  55 }
  56
  57 static void pci_grackle_set_irq(void *opaque, int irq_num, int level)
  58 {
  59     GrackleState *s = opaque;
  60
  61     trace_grackle_set_irq(irq_num, level);
  62     qemu_set_irq(s->irqs[irq_num], level);
  63 }
  64
  65 static void grackle_init_irqs(GrackleState *s)
  66 {
  67     int i;
  68
  69     for (i = 0; i < ARRAY_SIZE(s->irqs); i++) {
  70         s->irqs[i] = qdev_get_gpio_in(DEVICE(s->pic), 0x15 + i);
  71     }
  72 }
  73
  74 static void grackle_realize(DeviceState *dev, Error **errp)
  75 {
  76     GrackleState *s = GRACKLE_PCI_HOST_BRIDGE(dev);
  77     PCIHostState *phb = PCI_HOST_BRIDGE(dev);
  78
  79     phb->bus = pci_register_root_bus(dev, NULL,
  80                                      pci_grackle_set_irq,
  81                                      pci_grackle_map_irq,
  82                                      s,
  83                                      &s->pci_mmio,
  84                                      &s->pci_io,
  85                                      0, 4, TYPE_PCI_BUS);
  86
  87     pci_create_simple(phb->bus, 0, "grackle");
  88     grackle_init_irqs(s);
  89 }
  90
  91 static void grackle_init(Object *obj)
  92 {
  93     GrackleState *s = GRACKLE_PCI_HOST_BRIDGE(obj);
  94     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
  95     PCIHostState *phb = PCI_HOST_BRIDGE(obj);
  96
  97     memory_region_init(&s->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL);
  98     memory_region_init_io(&s->pci_io, OBJECT(s), &unassigned_io_ops, obj,
  99                           "pci-isa-mmio", 0x00200000);
 100
 101     memory_region_init_alias(&s->pci_hole, OBJECT(s), "pci-hole", &s->pci_mmio,
 102                              0x80000000ULL, 0x7e000000ULL);
 103
 104     memory_region_init_io(&phb->conf_mem, obj, &pci_host_conf_le_ops,
 105                           DEVICE(obj), "pci-conf-idx", 0x1000);
 106     memory_region_init_io(&phb->data_mem, obj, &pci_host_data_le_ops,
 107                           DEVICE(obj), "pci-data-idx", 0x1000);
 108
 109     object_property_add_link(obj, "pic", TYPE_HEATHROW,
 110                              (Object **) &s->pic,
 111                              qdev_prop_allow_set_link_before_realize,
 112                              0, NULL);
 113
 114     sysbus_init_mmio(sbd, &phb->conf_mem);
 115     sysbus_init_mmio(sbd, &phb->data_mem);
 116     sysbus_init_mmio(sbd, &s->pci_hole);
 117     sysbus_init_mmio(sbd, &s->pci_io);
 118 }
 119
 120 static void grackle_pci_realize(PCIDevice *d, Error **errp)
 121 {
 122     d->config[0x09] = 0x01;
 123 }
 124
 125 static void grackle_pci_class_init(ObjectClass *klass, void *data)
 126 {
 127     DeviceClass *dc = DEVICE_CLASS(klass);
 128     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 129
 130     k->realize   = grackle_pci_realize;
 131     k->vendor_id = PCI_VENDOR_ID_MOTOROLA;
 132     k->device_id = PCI_DEVICE_ID_MOTOROLA_MPC106;
 133     k->revision  = 0x00;
 134     k->class_id  = PCI_CLASS_BRIDGE_HOST;
 135     /*
 136      * PCI-facing part of the host bridge, not usable without the
 137      * host-facing part, which can't be device_add'ed, yet.
 138      */
 139     dc->user_creatable = false;
 140 }
 141
 142 static const TypeInfo grackle_pci_info = {
 143     .name          = "grackle",
 144     .parent        = TYPE_PCI_DEVICE,
 145     .instance_size = sizeof(PCIDevice),
 146     .class_init = grackle_pci_class_init,
 147     .interfaces = (InterfaceInfo[]) {
 148         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 149         { },
 150     },
 151 };
 152
 153 static char *grackle_ofw_unit_address(const SysBusDevice *dev)
 154 {
 155     GrackleState *s = GRACKLE_PCI_HOST_BRIDGE(dev);
 156
 157     return g_strdup_printf("%x", s->ofw_addr);
 158 }
 159
 160 static Property grackle_properties[] = {
 161     DEFINE_PROP_UINT32("ofw-addr", GrackleState, ofw_addr, -1),
 162     DEFINE_PROP_END_OF_LIST()
 163 };
 164
 165 static void grackle_class_init(ObjectClass *klass, void *data)
 166 {
 167     DeviceClass *dc = DEVICE_CLASS(klass);
 168     SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(klass);
 169
 170     dc->realize = grackle_realize;
 171     dc->props = grackle_properties;
 172     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 173     dc->fw_name = "pci";
 174     sbc->explicit_ofw_unit_address = grackle_ofw_unit_address;
 175 }
 176
 177 static const TypeInfo grackle_host_info = {
 178     .name          = TYPE_GRACKLE_PCI_HOST_BRIDGE,
 179     .parent        = TYPE_PCI_HOST_BRIDGE,
 180     .instance_size = sizeof(GrackleState),
 181     .instance_init = grackle_init,
 182     .class_init    = grackle_class_init,
 183 };
 184
 185 static void grackle_register_types(void)
 186 {
 187     type_register_static(&grackle_pci_info);
 188     type_register_static(&grackle_host_info);
 189 }
 190
 191 type_init(grackle_register_types)