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