| 1 | /* |
| 2 | * QMP commands related to PCI |
| 3 | * |
| 4 | * Copyright (c) 2004 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #include "qemu/osdep.h" |
| 26 | #include "hw/pci/pci.h" |
| 27 | #include "hw/pci/pci_bridge.h" |
| 28 | #include "pci-internal.h" |
| 29 | #include "qapi/qapi-commands-pci.h" |
| 30 | |
| 31 | static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num); |
| 32 | |
| 33 | static PciMemoryRegionList *qmp_query_pci_regions(const PCIDevice *dev) |
| 34 | { |
| 35 | PciMemoryRegionList *head = NULL, **tail = &head; |
| 36 | int i; |
| 37 | |
| 38 | for (i = 0; i < PCI_NUM_REGIONS; i++) { |
| 39 | const PCIIORegion *r = &dev->io_regions[i]; |
| 40 | PciMemoryRegion *region; |
| 41 | |
| 42 | if (!r->size) { |
| 43 | continue; |
| 44 | } |
| 45 | |
| 46 | region = g_malloc0(sizeof(*region)); |
| 47 | |
| 48 | if (r->type & PCI_BASE_ADDRESS_SPACE_IO) { |
| 49 | region->type = g_strdup("io"); |
| 50 | } else { |
| 51 | region->type = g_strdup("memory"); |
| 52 | region->has_prefetch = true; |
| 53 | region->prefetch = !!(r->type & PCI_BASE_ADDRESS_MEM_PREFETCH); |
| 54 | region->has_mem_type_64 = true; |
| 55 | region->mem_type_64 = !!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64); |
| 56 | } |
| 57 | |
| 58 | region->bar = i; |
| 59 | region->address = r->addr; |
| 60 | region->size = r->size; |
| 61 | |
| 62 | QAPI_LIST_APPEND(tail, region); |
| 63 | } |
| 64 | |
| 65 | return head; |
| 66 | } |
| 67 | |
| 68 | static PciBridgeInfo *qmp_query_pci_bridge(PCIDevice *dev, PCIBus *bus, |
| 69 | int bus_num) |
| 70 | { |
| 71 | PciBridgeInfo *info; |
| 72 | PciMemoryRange *range; |
| 73 | |
| 74 | info = g_new0(PciBridgeInfo, 1); |
| 75 | |
| 76 | info->bus = g_new0(PciBusInfo, 1); |
| 77 | info->bus->number = dev->config[PCI_PRIMARY_BUS]; |
| 78 | info->bus->secondary = dev->config[PCI_SECONDARY_BUS]; |
| 79 | info->bus->subordinate = dev->config[PCI_SUBORDINATE_BUS]; |
| 80 | |
| 81 | range = info->bus->io_range = g_new0(PciMemoryRange, 1); |
| 82 | range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO); |
| 83 | range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO); |
| 84 | |
| 85 | range = info->bus->memory_range = g_new0(PciMemoryRange, 1); |
| 86 | range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); |
| 87 | range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); |
| 88 | |
| 89 | range = info->bus->prefetchable_range = g_new0(PciMemoryRange, 1); |
| 90 | range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); |
| 91 | range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); |
| 92 | |
| 93 | if (dev->config[PCI_SECONDARY_BUS] != 0) { |
| 94 | PCIBus *child_bus = pci_find_bus_nr(bus, |
| 95 | dev->config[PCI_SECONDARY_BUS]); |
| 96 | if (child_bus) { |
| 97 | info->has_devices = true; |
| 98 | info->devices = qmp_query_pci_devices(child_bus, |
| 99 | dev->config[PCI_SECONDARY_BUS]); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | return info; |
| 104 | } |
| 105 | |
| 106 | static PciDeviceInfo *qmp_query_pci_device(PCIDevice *dev, PCIBus *bus, |
| 107 | int bus_num) |
| 108 | { |
| 109 | const pci_class_desc *desc; |
| 110 | PciDeviceInfo *info; |
| 111 | uint8_t type; |
| 112 | int class; |
| 113 | |
| 114 | info = g_new0(PciDeviceInfo, 1); |
| 115 | info->bus = bus_num; |
| 116 | info->slot = PCI_SLOT(dev->devfn); |
| 117 | info->function = PCI_FUNC(dev->devfn); |
| 118 | |
| 119 | info->class_info = g_new0(PciDeviceClass, 1); |
| 120 | class = pci_get_word(dev->config + PCI_CLASS_DEVICE); |
| 121 | info->class_info->q_class = class; |
| 122 | desc = get_class_desc(class); |
| 123 | if (desc->desc) { |
| 124 | info->class_info->desc = g_strdup(desc->desc); |
| 125 | } |
| 126 | |
| 127 | info->id = g_new0(PciDeviceId, 1); |
| 128 | info->id->vendor = pci_get_word(dev->config + PCI_VENDOR_ID); |
| 129 | info->id->device = pci_get_word(dev->config + PCI_DEVICE_ID); |
| 130 | info->regions = qmp_query_pci_regions(dev); |
| 131 | info->qdev_id = g_strdup(dev->qdev.id ? dev->qdev.id : ""); |
| 132 | |
| 133 | info->irq_pin = dev->config[PCI_INTERRUPT_PIN]; |
| 134 | if (dev->config[PCI_INTERRUPT_PIN] != 0) { |
| 135 | info->has_irq = true; |
| 136 | info->irq = dev->config[PCI_INTERRUPT_LINE]; |
| 137 | } |
| 138 | |
| 139 | type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; |
| 140 | if (type == PCI_HEADER_TYPE_BRIDGE) { |
| 141 | info->pci_bridge = qmp_query_pci_bridge(dev, bus, bus_num); |
| 142 | } else if (type == PCI_HEADER_TYPE_NORMAL) { |
| 143 | info->id->has_subsystem = info->id->has_subsystem_vendor = true; |
| 144 | info->id->subsystem = pci_get_word(dev->config + PCI_SUBSYSTEM_ID); |
| 145 | info->id->subsystem_vendor = |
| 146 | pci_get_word(dev->config + PCI_SUBSYSTEM_VENDOR_ID); |
| 147 | } else if (type == PCI_HEADER_TYPE_CARDBUS) { |
| 148 | info->id->has_subsystem = info->id->has_subsystem_vendor = true; |
| 149 | info->id->subsystem = pci_get_word(dev->config + PCI_CB_SUBSYSTEM_ID); |
| 150 | info->id->subsystem_vendor = |
| 151 | pci_get_word(dev->config + PCI_CB_SUBSYSTEM_VENDOR_ID); |
| 152 | } |
| 153 | |
| 154 | return info; |
| 155 | } |
| 156 | |
| 157 | static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num) |
| 158 | { |
| 159 | PciDeviceInfoList *head = NULL, **tail = &head; |
| 160 | PCIDevice *dev; |
| 161 | int devfn; |
| 162 | |
| 163 | for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { |
| 164 | dev = bus->devices[devfn]; |
| 165 | if (dev) { |
| 166 | QAPI_LIST_APPEND(tail, qmp_query_pci_device(dev, bus, bus_num)); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | return head; |
| 171 | } |
| 172 | |
| 173 | static PciInfo *qmp_query_pci_bus(PCIBus *bus, int bus_num) |
| 174 | { |
| 175 | PciInfo *info = NULL; |
| 176 | |
| 177 | bus = pci_find_bus_nr(bus, bus_num); |
| 178 | if (bus) { |
| 179 | info = g_malloc0(sizeof(*info)); |
| 180 | info->bus = bus_num; |
| 181 | info->devices = qmp_query_pci_devices(bus, bus_num); |
| 182 | } |
| 183 | |
| 184 | return info; |
| 185 | } |
| 186 | |
| 187 | PciInfoList *qmp_query_pci(Error **errp) |
| 188 | { |
| 189 | PciInfoList *head = NULL, **tail = &head; |
| 190 | PCIHostState *host_bridge; |
| 191 | |
| 192 | QLIST_FOREACH(host_bridge, &pci_host_bridges, next) { |
| 193 | QAPI_LIST_APPEND(tail, |
| 194 | qmp_query_pci_bus(host_bridge->bus, |
| 195 | pci_bus_num(host_bridge->bus))); |
| 196 | } |
| 197 | |
| 198 | return head; |
| 199 | } |