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 } 200