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 44 typedef 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. */ 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 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 65 PCIBus *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 } 101 102 static 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 } 117 118 static void grackle_pci_host_realize(PCIDevice *d, Error **errp) 119 { 120 d->config[0x09] = 0x01; 121 } 122 123 static 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 } 139 140 static 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 }; 146 147 static 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 } 155 156 static 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 }; 162 163 static void grackle_register_types(void) 164 { 165 type_register_static(&grackle_pci_info); 166 type_register_static(&grackle_pci_host_info); 167 } 168 169 type_init(grackle_register_types) 170