qemu

pci-qmp-cmds.c
199 строк · 6.6 Кб
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/*
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 * QMP commands related to PCI
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 *
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 * Copyright (c) 2004 Fabrice Bellard
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
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 */
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#include "qemu/osdep.h"
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#include "hw/pci/pci.h"
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#include "hw/pci/pci_bridge.h"
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#include "pci-internal.h"
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#include "qapi/qapi-commands-pci.h"
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static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num);
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static PciMemoryRegionList *qmp_query_pci_regions(const PCIDevice *dev)
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{
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    PciMemoryRegionList *head = NULL, **tail = &head;
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    int i;
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    for (i = 0; i < PCI_NUM_REGIONS; i++) {
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        const PCIIORegion *r = &dev->io_regions[i];
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        PciMemoryRegion *region;
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        if (!r->size) {
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            continue;
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        }
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        region = g_malloc0(sizeof(*region));
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        if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
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            region->type = g_strdup("io");
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        } else {
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            region->type = g_strdup("memory");
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            region->has_prefetch = true;
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            region->prefetch = !!(r->type & PCI_BASE_ADDRESS_MEM_PREFETCH);
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            region->has_mem_type_64 = true;
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            region->mem_type_64 = !!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64);
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        }
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        region->bar = i;
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        region->address = r->addr;
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        region->size = r->size;
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        QAPI_LIST_APPEND(tail, region);
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    }
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    return head;
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}
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static PciBridgeInfo *qmp_query_pci_bridge(PCIDevice *dev, PCIBus *bus,
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                                           int bus_num)
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{
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    PciBridgeInfo *info;
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    PciMemoryRange *range;
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    info = g_new0(PciBridgeInfo, 1);
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    info->bus = g_new0(PciBusInfo, 1);
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    info->bus->number = dev->config[PCI_PRIMARY_BUS];
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    info->bus->secondary = dev->config[PCI_SECONDARY_BUS];
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    info->bus->subordinate = dev->config[PCI_SUBORDINATE_BUS];
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    range = info->bus->io_range = g_new0(PciMemoryRange, 1);
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    range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO);
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    range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO);
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    range = info->bus->memory_range = g_new0(PciMemoryRange, 1);
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    range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
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    range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
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    range = info->bus->prefetchable_range = g_new0(PciMemoryRange, 1);
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    range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
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    range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
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    if (dev->config[PCI_SECONDARY_BUS] != 0) {
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        PCIBus *child_bus = pci_find_bus_nr(bus,
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                                            dev->config[PCI_SECONDARY_BUS]);
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        if (child_bus) {
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            info->has_devices = true;
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            info->devices = qmp_query_pci_devices(child_bus,
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                                            dev->config[PCI_SECONDARY_BUS]);
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        }
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    }
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    return info;
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}
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static PciDeviceInfo *qmp_query_pci_device(PCIDevice *dev, PCIBus *bus,
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                                           int bus_num)
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{
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    const pci_class_desc *desc;
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    PciDeviceInfo *info;
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    uint8_t type;
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    int class;
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    info = g_new0(PciDeviceInfo, 1);
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    info->bus = bus_num;
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    info->slot = PCI_SLOT(dev->devfn);
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    info->function = PCI_FUNC(dev->devfn);
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    info->class_info = g_new0(PciDeviceClass, 1);
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    class = pci_get_word(dev->config + PCI_CLASS_DEVICE);
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    info->class_info->q_class = class;
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    desc = get_class_desc(class);
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    if (desc->desc) {
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        info->class_info->desc = g_strdup(desc->desc);
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    }
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    info->id = g_new0(PciDeviceId, 1);
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    info->id->vendor = pci_get_word(dev->config + PCI_VENDOR_ID);
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    info->id->device = pci_get_word(dev->config + PCI_DEVICE_ID);
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    info->regions = qmp_query_pci_regions(dev);
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    info->qdev_id = g_strdup(dev->qdev.id ? dev->qdev.id : "");
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    info->irq_pin = dev->config[PCI_INTERRUPT_PIN];
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    if (dev->config[PCI_INTERRUPT_PIN] != 0) {
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        info->has_irq = true;
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        info->irq = dev->config[PCI_INTERRUPT_LINE];
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    }
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    type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
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    if (type == PCI_HEADER_TYPE_BRIDGE) {
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        info->pci_bridge = qmp_query_pci_bridge(dev, bus, bus_num);
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    } else if (type == PCI_HEADER_TYPE_NORMAL) {
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        info->id->has_subsystem = info->id->has_subsystem_vendor = true;
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        info->id->subsystem = pci_get_word(dev->config + PCI_SUBSYSTEM_ID);
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        info->id->subsystem_vendor =
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            pci_get_word(dev->config + PCI_SUBSYSTEM_VENDOR_ID);
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    } else if (type == PCI_HEADER_TYPE_CARDBUS) {
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        info->id->has_subsystem = info->id->has_subsystem_vendor = true;
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        info->id->subsystem = pci_get_word(dev->config + PCI_CB_SUBSYSTEM_ID);
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        info->id->subsystem_vendor =
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            pci_get_word(dev->config + PCI_CB_SUBSYSTEM_VENDOR_ID);
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    }
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    return info;
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}
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static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num)
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{
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    PciDeviceInfoList *head = NULL, **tail = &head;
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    PCIDevice *dev;
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    int devfn;
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    for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
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        dev = bus->devices[devfn];
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        if (dev) {
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            QAPI_LIST_APPEND(tail, qmp_query_pci_device(dev, bus, bus_num));
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        }
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    }
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    return head;
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}
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static PciInfo *qmp_query_pci_bus(PCIBus *bus, int bus_num)
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{
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    PciInfo *info = NULL;
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    bus = pci_find_bus_nr(bus, bus_num);
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    if (bus) {
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        info = g_malloc0(sizeof(*info));
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        info->bus = bus_num;
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        info->devices = qmp_query_pci_devices(bus, bus_num);
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    }
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    return info;
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}
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PciInfoList *qmp_query_pci(Error **errp)
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{
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    PciInfoList *head = NULL, **tail = &head;
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    PCIHostState *host_bridge;
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    QLIST_FOREACH(host_bridge, &pci_host_bridges, next) {
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        QAPI_LIST_APPEND(tail,
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                         qmp_query_pci_bus(host_bridge->bus,
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                                           pci_bus_num(host_bridge->bus)));
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    }
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    return head;
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}
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