From f3006dd1e60af3765c501a082d621f947d6e5974 Mon Sep 17 00:00:00 2001 From: Isaku Yamahata Date: Fri, 24 Dec 2010 12:14:13 +0900 Subject: pci: introduce a helper function to convert qdev id to PCIDevice This patch introduce a helper function to get PCIDevice from qdev id. This function will be used later. Signed-off-by: Isaku Yamahata Signed-off-by: Michael S. Tsirkin --- hw/pci.c | 35 +++++++++++++++++++++++++++++++++++ hw/pci.h | 1 + 2 files changed, 36 insertions(+) diff --git a/hw/pci.c b/hw/pci.c index eb21848b0f..44bb3b9a91 100644 --- a/hw/pci.c +++ b/hw/pci.c @@ -2027,3 +2027,38 @@ static char *pcibus_get_dev_path(DeviceState *dev) return strdup(path); } +static int pci_qdev_find_recursive(PCIBus *bus, + const char *id, PCIDevice **pdev) +{ + DeviceState *qdev = qdev_find_recursive(&bus->qbus, id); + if (!qdev) { + return -ENODEV; + } + + /* roughly check if given qdev is pci device */ + if (qdev->info->init == &pci_qdev_init && + qdev->parent_bus->info == &pci_bus_info) { + *pdev = DO_UPCAST(PCIDevice, qdev, qdev); + return 0; + } + return -EINVAL; +} + +int pci_qdev_find_device(const char *id, PCIDevice **pdev) +{ + struct PCIHostBus *host; + int rc = -ENODEV; + + QLIST_FOREACH(host, &host_buses, next) { + int tmp = pci_qdev_find_recursive(host->bus, id, pdev); + if (!tmp) { + rc = 0; + break; + } + if (tmp != -ENODEV) { + rc = tmp; + } + } + + return rc; +} diff --git a/hw/pci.h b/hw/pci.h index 6e80b08e0b..052960e3ea 100644 --- a/hw/pci.h +++ b/hw/pci.h @@ -252,6 +252,7 @@ PCIBus *pci_find_root_bus(int domain); int pci_find_domain(const PCIBus *bus); PCIBus *pci_find_bus(PCIBus *bus, int bus_num); PCIDevice *pci_find_device(PCIBus *bus, int bus_num, int slot, int function); +int pci_qdev_find_device(const char *id, PCIDevice **pdev); PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr); int pci_parse_devaddr(const char *addr, int *domp, int *busp, -- cgit v1.2.1