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[Qemu-devel] [PATCH 19/24] pci: hotplug windup
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PATCH 19/24] pci: hotplug windup |
Date: |
Fri, 25 Sep 2009 21:42:44 +0200 |
Create qdev infrastructure for pci hotplug. PCI bus implementations
must register a handler for hotplug. Creating a new PCI device will
automagically hot-plug it in case the PCI bus in question supports this.
Signed-off-by: Gerd Hoffmann <address@hidden>
---
hw/pci.c | 25 +++++++++++++++++++++++--
hw/pci.h | 2 ++
2 files changed, 25 insertions(+), 2 deletions(-)
diff --git a/hw/pci.c b/hw/pci.c
index 3221a6c..03ad90f 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -41,6 +41,7 @@ struct PCIBus {
int devfn_min;
pci_set_irq_fn set_irq;
pci_map_irq_fn map_irq;
+ pci_hotplug_fn hotplug;
uint32_t config_reg; /* XXX: suppress */
void *irq_opaque;
PCIDevice *devices[256];
@@ -132,6 +133,12 @@ void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq,
pci_map_irq_fn map_irq,
bus->irq_count = qemu_mallocz(nirq * sizeof(bus->irq_count[0]));
}
+void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug)
+{
+ bus->qbus.allow_hotplug = 1;
+ bus->hotplug = hotplug;
+}
+
PCIBus *pci_register_bus(DeviceState *parent, const char *name,
pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
void *irq_opaque, int devfn_min, int nirq)
@@ -935,19 +942,33 @@ static int pci_qdev_init(DeviceState *qdev, DeviceInfo
*base)
PCIDevice *pci_dev = (PCIDevice *)qdev;
PCIDeviceInfo *info = container_of(base, PCIDeviceInfo, qdev);
PCIBus *bus;
- int devfn;
+ int devfn, rc;
bus = FROM_QBUS(PCIBus, qdev_get_parent_bus(qdev));
devfn = pci_dev->devfn;
pci_dev = do_pci_register_device(pci_dev, bus, base->name, devfn,
info->config_read, info->config_write);
assert(pci_dev);
- return info->init(pci_dev);
+ rc = info->init(pci_dev);
+ if (rc != 0)
+ return rc;
+ if (qdev->hotplugged)
+ bus->hotplug(pci_dev, 1);
+ return 0;
+}
+
+static int pci_unplug_device(DeviceState *qdev)
+{
+ PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev);
+
+ dev->bus->hotplug(dev, 0);
+ return 0;
}
void pci_qdev_register(PCIDeviceInfo *info)
{
info->qdev.init = pci_qdev_init;
+ info->qdev.unplug = pci_unplug_device;
info->qdev.exit = pci_unregister_device;
info->qdev.bus_info = &pci_bus_info;
qdev_register(&info->qdev);
diff --git a/hw/pci.h b/hw/pci.h
index 5e781d8..c678353 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -246,11 +246,13 @@ int pci_device_load(PCIDevice *s, QEMUFile *f);
typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level);
typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num);
+typedef int (*pci_hotplug_fn)(PCIDevice *pci_dev, int state);
void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
const char *name, int devfn_min);
PCIBus *pci_bus_new(DeviceState *parent, const char *name, int devfn_min);
void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
void *irq_opaque, int nirq);
+void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug);
PCIBus *pci_register_bus(DeviceState *parent, const char *name,
pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
void *irq_opaque, int devfn_min, int nirq);
--
1.6.2.5
- [Qemu-devel] [PATCH 08/24] piix_pci: kill PIIX3IrqState, (continued)
- [Qemu-devel] [PATCH 08/24] piix_pci: kill PIIX3IrqState, Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 10/24] Add exit callback to DeviceInfo., Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 12/24] pci: use qdev for device destruction., Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 07/24] convert pci bridge to qdev, Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 13/24] pci: move unregister from PCIDevice to PCIDeviceInfo, Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 11/24] Implement scsi device destruction, Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 09/24] qdev: device free fixups., Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 14/24] usb: hook unplug into qdev, cleanups + fixes., Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 17/24] usb: hotplug windup, Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 23/24] allow if=none for drive_add, Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 19/24] pci: hotplug windup,
Gerd Hoffmann <=
- [Qemu-devel] [PATCH 15/24] switch qemu-config to qemu_error, Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 21/24] drive cleanup fixes., Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 18/24] scsi: hotplug windup, Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 22/24] refactor drive_hot_add, Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 24/24] store a pointer to QemuOpts in DeviceState, release it when zapping a device., Gerd Hoffmann, 2009/09/25
- [Qemu-devel] [PATCH 16/24] qdev hotplug: infrastructure and monitor commands., Gerd Hoffmann, 2009/09/25