LXR qemu/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
  31/* debug Grackle */
  32//#define DEBUG_GRACKLE
  33
  34#ifdef DEBUG_GRACKLE
  35#define GRACKLE_DPRINTF(fmt, ...)                               \
  36    do { printf("GRACKLE: " fmt , ## __VA_ARGS__); } while (0)
  37#else
  38#define GRACKLE_DPRINTF(fmt, ...)
  39#endif
  40
  41#define GRACKLE_PCI_HOST_BRIDGE(obj) \
  42    OBJECT_CHECK(GrackleState, (obj), TYPE_GRACKLE_PCI_HOST_BRIDGE)
  43
  44typedef struct GrackleState {
  45    PCIHostState parent_obj;
  46
  47    MemoryRegion pci_mmio;
  48    MemoryRegion pci_hole;
  49} GrackleState;
  50
  51/* Don't know if this matches real hardware, but it agrees with OHW.  */
  52static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num)
  53{
  54    return (irq_num + (pci_dev->devfn >> 3)) & 3;
  55}
  56
  57static void pci_grackle_set_irq(void *opaque, int irq_num, int level)
  58{
  59    qemu_irq *pic = opaque;
  60
  61    GRACKLE_DPRINTF("set_irq num %d level %d\n", irq_num, level);
  62    qemu_set_irq(pic[irq_num + 0x15], level);
  63}
  64
  65PCIBus *pci_grackle_init(uint32_t base, qemu_irq *pic,
  66                         MemoryRegion *address_space_mem,
  67                         MemoryRegion *address_space_io)
  68{
  69    DeviceState *dev;
  70    SysBusDevice *s;
  71    PCIHostState *phb;
  72    GrackleState *d;
  73
  74    dev = qdev_create(NULL, TYPE_GRACKLE_PCI_HOST_BRIDGE);
  75    qdev_init_nofail(dev);
  76    s = SYS_BUS_DEVICE(dev);
  77    phb = PCI_HOST_BRIDGE(dev);
  78    d = GRACKLE_PCI_HOST_BRIDGE(dev);
  79
  80    memory_region_init(&d->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL);
  81    memory_region_init_alias(&d->pci_hole, OBJECT(s), "pci-hole", &d->pci_mmio,
  82                             0x80000000ULL, 0x7e000000ULL);
  83    memory_region_add_subregion(address_space_mem, 0x80000000ULL,
  84                                &d->pci_hole);
  85
  86    phb->bus = pci_register_bus(dev, NULL,
  87                                pci_grackle_set_irq,
  88                                pci_grackle_map_irq,
  89                                pic,
  90                                &d->pci_mmio,
  91                                address_space_io,
  92                                0, 4, TYPE_PCI_BUS);
  93
  94    pci_create_simple(phb->bus, 0, "grackle");
  95
  96    sysbus_mmio_map(s, 0, base);
  97    sysbus_mmio_map(s, 1, base + 0x00200000);
  98
  99    return phb->bus;
 100}
 101
 102static int pci_grackle_init_device(SysBusDevice *dev)
 103{
 104    PCIHostState *phb;
 105
 106    phb = PCI_HOST_BRIDGE(dev);
 107
 108    memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops,
 109                          dev, "pci-conf-idx", 0x1000);
 110    memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops,
 111                          dev, "pci-data-idx", 0x1000);
 112    sysbus_init_mmio(dev, &phb->conf_mem);
 113    sysbus_init_mmio(dev, &phb->data_mem);
 114
 115    return 0;
 116}
 117
 118static void grackle_pci_host_realize(PCIDevice *d, Error **errp)
 119{
 120    d->config[0x09] = 0x01;
 121}
 122
 123static void grackle_pci_class_init(ObjectClass *klass, void *data)
 124{
 125    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 126    DeviceClass *dc = DEVICE_CLASS(klass);
 127
 128    k->realize   = grackle_pci_host_realize;
 129    k->vendor_id = PCI_VENDOR_ID_MOTOROLA;
 130    k->device_id = PCI_DEVICE_ID_MOTOROLA_MPC106;
 131    k->revision  = 0x00;
 132    k->class_id  = PCI_CLASS_BRIDGE_HOST;
 133    /*
 134     * PCI-facing part of the host bridge, not usable without the
 135     * host-facing part, which can't be device_add'ed, yet.
 136     */
 137    dc->cannot_instantiate_with_device_add_yet = true;
 138}
 139
 140static const TypeInfo grackle_pci_info = {
 141    .name          = "grackle",
 142    .parent        = TYPE_PCI_DEVICE,
 143    .instance_size = sizeof(PCIDevice),
 144    .class_init = grackle_pci_class_init,
 145};
 146
 147static void pci_grackle_class_init(ObjectClass *klass, void *data)
 148{
 149    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 150    DeviceClass *dc = DEVICE_CLASS(klass);
 151
 152    k->init = pci_grackle_init_device;
 153    set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 154}
 155
 156static const TypeInfo grackle_pci_host_info = {
 157    .name          = TYPE_GRACKLE_PCI_HOST_BRIDGE,
 158    .parent        = TYPE_PCI_HOST_BRIDGE,
 159    .instance_size = sizeof(GrackleState),
 160    .class_init    = pci_grackle_class_init,
 161};
 162
 163static void grackle_register_types(void)
 164{
 165    type_register_static(&grackle_pci_info);
 166    type_register_static(&grackle_pci_host_info);
 167}
 168
 169type_init(grackle_register_types)
 170