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[Qemu-devel] [PATCH v11 2/5] pci: introduce a helper function to convert
From: |
Isaku Yamahata |
Subject: |
[Qemu-devel] [PATCH v11 2/5] pci: introduce a helper function to convert qdev id to PCIDevice |
Date: |
Fri, 24 Dec 2010 12:14:13 +0900 |
This patch introduce a helper function to get PCIDevice from qdev id.
This function will be used later.
Signed-off-by: Isaku Yamahata <address@hidden>
---
hw/pci.c | 35 +++++++++++++++++++++++++++++++++++
hw/pci.h | 1 +
2 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/hw/pci.c b/hw/pci.c
index eb21848..44bb3b9 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 6e80b08..052960e 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,
--
1.7.1.1