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Re: [Qemu-devel] [PATCH v3 2/2] hw/pci-bridge: Convert pxb initializatio
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH v3 2/2] hw/pci-bridge: Convert pxb initialization functions to Error |
Date: |
Fri, 8 Apr 2016 12:35:22 +0300 |
On Fri, Apr 08, 2016 at 03:55:54PM +0800, Wei Jiangang wrote:
> Firstly, convert pxb_dev_init_common() to Error and rename
> it to pxb_dev_realize_common().
> Actually, pxb_register_bus() is converted as well.
>
> And then,
> convert pxb_dev_initfn() and pxb_pcie_dev_initfn() to Error,
> rename them to pxb_dev_realize() and pxb_pcie_dev_realize()
> respectively.
>
> Signed-off-by: Wei Jiangang <address@hidden>
> Signed-off-by: Cao jin <address@hidden>
Pls remember to re-post this after 2.6 is out.
> ---
> hw/pci-bridge/pci_expander_bridge.c | 52
> ++++++++++++++++++-------------------
> 1 file changed, 25 insertions(+), 27 deletions(-)
>
> diff --git a/hw/pci-bridge/pci_expander_bridge.c
> b/hw/pci-bridge/pci_expander_bridge.c
> index ba320bd..cbea9c1 100644
> --- a/hw/pci-bridge/pci_expander_bridge.c
> +++ b/hw/pci-bridge/pci_expander_bridge.c
> @@ -11,6 +11,7 @@
> */
>
> #include "qemu/osdep.h"
> +#include "qapi/error.h"
> #include "hw/pci/pci.h"
> #include "hw/pci/pci_bus.h"
> #include "hw/pci/pci_host.h"
> @@ -160,30 +161,25 @@ static const TypeInfo pxb_host_info = {
> };
>
> /*
> - * Registers the PXB bus as a child of the i440fx root bus.
> - *
> - * Returns 0 on successs, -1 if i440fx host was not
> - * found or the bus number is already in use.
> + * Registers the PXB bus as a child of pci host root bus.
> */
> -static int pxb_register_bus(PCIDevice *dev, PCIBus *pxb_bus)
> +static void pxb_register_bus(PCIDevice *dev, PCIBus *pxb_bus, Error **errp)
> {
> PCIBus *bus = dev->bus;
> int pxb_bus_num = pci_bus_num(pxb_bus);
>
> if (bus->parent_dev) {
> - error_report("PXB devices can be attached only to root bus.");
> - return -1;
> + error_setg(errp, "PXB devices can be attached only to root bus");
> + return;
> }
>
> QLIST_FOREACH(bus, &bus->child, sibling) {
> if (pci_bus_num(bus) == pxb_bus_num) {
> - error_report("Bus %d is already in use.", pxb_bus_num);
> - return -1;
> + error_setg(errp, "Bus %d is already in use", pxb_bus_num);
> + return;
> }
> }
> QLIST_INSERT_HEAD(&dev->bus->child, pxb_bus, sibling);
> -
> - return 0;
> }
>
> static int pxb_map_irq_fn(PCIDevice *pci_dev, int pin)
> @@ -213,17 +209,18 @@ static gint pxb_compare(gconstpointer a, gconstpointer
> b)
> 0;
> }
>
> -static int pxb_dev_init_common(PCIDevice *dev, bool pcie)
> +static void pxb_dev_realize_common(PCIDevice *dev, bool pcie, Error **errp)
> {
> PXBDev *pxb = convert_to_pxb(dev);
> DeviceState *ds, *bds = NULL;
> PCIBus *bus;
> const char *dev_name = NULL;
> + Error *local_err = NULL;
>
> if (pxb->numa_node != NUMA_NODE_UNASSIGNED &&
> pxb->numa_node >= nb_numa_nodes) {
> - error_report("Illegal numa node %d.", pxb->numa_node);
> - return -EINVAL;
> + error_setg(errp, "Illegal numa node %d", pxb->numa_node);
> + return;
> }
>
> if (dev->qdev.id && *dev->qdev.id) {
> @@ -248,7 +245,9 @@ static int pxb_dev_init_common(PCIDevice *dev, bool pcie)
>
> PCI_HOST_BRIDGE(ds)->bus = bus;
>
> - if (pxb_register_bus(dev, bus)) {
> + pxb_register_bus(dev, bus, &local_err);
> + if (local_err) {
> + error_propagate(errp, local_err);
> goto err_register_bus;
> }
>
> @@ -262,23 +261,22 @@ static int pxb_dev_init_common(PCIDevice *dev, bool
> pcie)
> pci_config_set_class(dev->config, PCI_CLASS_BRIDGE_HOST);
>
> pxb_dev_list = g_list_insert_sorted(pxb_dev_list, pxb, pxb_compare);
> - return 0;
> + return;
>
> err_register_bus:
> object_unref(OBJECT(bds));
> object_unparent(OBJECT(bus));
> object_unref(OBJECT(ds));
> - return -EINVAL;
> }
>
> -static int pxb_dev_initfn(PCIDevice *dev)
> +static void pxb_dev_realize(PCIDevice *dev, Error **errp)
> {
> if (pci_bus_is_express(dev->bus)) {
> - error_report("pxb devices cannot reside on a PCIe bus!");
> - return -EINVAL;
> + error_setg(errp, "pxb devices cannot reside on a PCIe bus");
> + return;
> }
>
> - return pxb_dev_init_common(dev, false);
> + pxb_dev_realize_common(dev, false, errp);
> }
>
> static void pxb_dev_exitfn(PCIDevice *pci_dev)
> @@ -300,7 +298,7 @@ static void pxb_dev_class_init(ObjectClass *klass, void
> *data)
> DeviceClass *dc = DEVICE_CLASS(klass);
> PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
>
> - k->init = pxb_dev_initfn;
> + k->realize = pxb_dev_realize;
> k->exit = pxb_dev_exitfn;
> k->vendor_id = PCI_VENDOR_ID_REDHAT;
> k->device_id = PCI_DEVICE_ID_REDHAT_PXB;
> @@ -318,14 +316,14 @@ static const TypeInfo pxb_dev_info = {
> .class_init = pxb_dev_class_init,
> };
>
> -static int pxb_pcie_dev_initfn(PCIDevice *dev)
> +static void pxb_pcie_dev_realize(PCIDevice *dev, Error **errp)
> {
> if (!pci_bus_is_express(dev->bus)) {
> - error_report("pxb-pcie devices cannot reside on a PCI bus!");
> - return -EINVAL;
> + error_setg(errp, "pxb-pcie devices cannot reside on a PCI bus");
> + return;
> }
>
> - return pxb_dev_init_common(dev, true);
> + pxb_dev_realize_common(dev, true, errp);
> }
>
> static void pxb_pcie_dev_class_init(ObjectClass *klass, void *data)
> @@ -333,7 +331,7 @@ static void pxb_pcie_dev_class_init(ObjectClass *klass,
> void *data)
> DeviceClass *dc = DEVICE_CLASS(klass);
> PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
>
> - k->init = pxb_pcie_dev_initfn;
> + k->realize = pxb_pcie_dev_realize;
> k->exit = pxb_dev_exitfn;
> k->vendor_id = PCI_VENDOR_ID_REDHAT;
> k->device_id = PCI_DEVICE_ID_REDHAT_PXB_PCIE;
> --
> 1.9.3
>
>