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 "hw/pci/pci_host.h" 27 #include "hw/ppc/mac.h" 28 #include "hw/pci/pci.h" 29 30 /* debug Grackle */ 31 //#define DEBUG_GRACKLE 32 33 #ifdef DEBUG_GRACKLE 34 #define GRACKLE_DPRINTF(fmt, ...) \ 35 do { printf("GRACKLE: " fmt , ## __VA_ARGS__); } while (0) 36 #else 37 #define GRACKLE_DPRINTF(fmt, ...) 38 #endif 39 40 #define GRACKLE_PCI_HOST_BRIDGE(obj) \ 41 OBJECT_CHECK(GrackleState, (obj), TYPE_GRACKLE_PCI_HOST_BRIDGE) 42 43 typedef struct GrackleState { 44 PCIHostState parent_obj; 45 46 MemoryRegion pci_mmio; 47 MemoryRegion pci_hole; 48 } GrackleState; 49 50 /* Don't know if this matches real hardware, but it agrees with OHW. */ 51 static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num) 52 { 53 return (irq_num + (pci_dev->devfn >> 3)) & 3; 54 } 55 56 static void pci_grackle_set_irq(void *opaque, int irq_num, int level) 57 { 58 qemu_irq *pic = opaque; 59 60 GRACKLE_DPRINTF("set_irq num %d level %d\n", irq_num, level); 61 qemu_set_irq(pic[irq_num + 0x15], level); 62 } 63 64 PCIBus *pci_grackle_init(uint32_t base, qemu_irq *pic, 65 MemoryRegion *address_space_mem, 66 MemoryRegion *address_space_io) 67 { 68 DeviceState *dev; 69 SysBusDevice *s; 70 PCIHostState *phb; 71 GrackleState *d; 72 73 dev = qdev_create(NULL, TYPE_GRACKLE_PCI_HOST_BRIDGE); 74 qdev_init_nofail(dev); 75 s = SYS_BUS_DEVICE(dev); 76 phb = PCI_HOST_BRIDGE(dev); 77 d = GRACKLE_PCI_HOST_BRIDGE(dev); 78 79 memory_region_init(&d->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL); 80 memory_region_init_alias(&d->pci_hole, OBJECT(s), "pci-hole", &d->pci_mmio, 81 0x80000000ULL, 0x7e000000ULL); 82 memory_region_add_subregion(address_space_mem, 0x80000000ULL, 83 &d->pci_hole); 84 85 phb->bus = pci_register_bus(dev, NULL, 86 pci_grackle_set_irq, 87 pci_grackle_map_irq, 88 pic, 89 &d->pci_mmio, 90 address_space_io, 91 0, 4, TYPE_PCI_BUS); 92 93 pci_create_simple(phb->bus, 0, "grackle"); 94 95 sysbus_mmio_map(s, 0, base); 96 sysbus_mmio_map(s, 1, base + 0x00200000); 97 98 return phb->bus; 99 } 100 101 static int pci_grackle_init_device(SysBusDevice *dev) 102 { 103 PCIHostState *phb; 104 105 phb = PCI_HOST_BRIDGE(dev); 106 107 memory_region_init_io(&phb->conf_mem, OBJECT(dev), &pci_host_conf_le_ops, 108 dev, "pci-conf-idx", 0x1000); 109 memory_region_init_io(&phb->data_mem, OBJECT(dev), &pci_host_data_le_ops, 110 dev, "pci-data-idx", 0x1000); 111 sysbus_init_mmio(dev, &phb->conf_mem); 112 sysbus_init_mmio(dev, &phb->data_mem); 113 114 return 0; 115 } 116 117 static void grackle_pci_host_realize(PCIDevice *d, Error **errp) 118 { 119 d->config[0x09] = 0x01; 120 } 121 122 static void grackle_pci_class_init(ObjectClass *klass, void *data) 123 { 124 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 125 DeviceClass *dc = DEVICE_CLASS(klass); 126 127 k->realize = grackle_pci_host_realize; 128 k->vendor_id = PCI_VENDOR_ID_MOTOROLA; 129 k->device_id = PCI_DEVICE_ID_MOTOROLA_MPC106; 130 k->revision = 0x00; 131 k->class_id = PCI_CLASS_BRIDGE_HOST; 132 /* 133 * PCI-facing part of the host bridge, not usable without the 134 * host-facing part, which can't be device_add'ed, yet. 135 */ 136 dc->cannot_instantiate_with_device_add_yet = true; 137 } 138 139 static const TypeInfo grackle_pci_info = { 140 .name = "grackle", 141 .parent = TYPE_PCI_DEVICE, 142 .instance_size = sizeof(PCIDevice), 143 .class_init = grackle_pci_class_init, 144 }; 145 146 static void pci_grackle_class_init(ObjectClass *klass, void *data) 147 { 148 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); 149 DeviceClass *dc = DEVICE_CLASS(klass); 150 151 k->init = pci_grackle_init_device; 152 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 153 } 154 155 static const TypeInfo grackle_pci_host_info = { 156 .name = TYPE_GRACKLE_PCI_HOST_BRIDGE, 157 .parent = TYPE_PCI_HOST_BRIDGE, 158 .instance_size = sizeof(GrackleState), 159 .class_init = pci_grackle_class_init, 160 }; 161 162 static void grackle_register_types(void) 163 { 164 type_register_static(&grackle_pci_info); 165 type_register_static(&grackle_pci_host_info); 166 } 167 168 type_init(grackle_register_types) 169