pci hotplug: add argument to pci hot plug callback.

Add argument, DeviceState*, to pci hot plug callback.
The argument will be used later to remove global variable.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Acked-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

hw/acpi_piix4.c

@@ -568,7 +568,7 @@ static void pciej_write(void *opaque, uint32_t addr, uint32_t val)
 #endif
 }
 
-static int piix4_device_hotplug(PCIDevice *dev, int state);
+static int piix4_device_hotplug(DeviceState *qdev, PCIDevice *dev, int state);
 
 void piix4_acpi_system_hot_add_init(PCIBus *bus)
 {
@@ -581,7 +581,7 @@ void piix4_acpi_system_hot_add_init(PCIBus *bus)
     register_ioport_write(PCI_EJ_BASE, 4, 4, pciej_write, bus);
     register_ioport_read(PCI_EJ_BASE, 4, 4,  pciej_read, bus);
 
-    pci_bus_hotplug(bus, piix4_device_hotplug);
+    pci_bus_hotplug(bus, piix4_device_hotplug, NULL);
 }
 
 static void enable_device(struct pci_status *p, struct gpe_regs *g, int slot)
@@ -596,7 +596,7 @@ static void disable_device(struct pci_status *p, struct gpe_regs *g, int slot)
     p->down |= (1 << slot);
 }
 
-static int piix4_device_hotplug(PCIDevice *dev, int state)
+static int piix4_device_hotplug(DeviceState *qdev, PCIDevice *dev, int state)
 {
     int slot = PCI_SLOT(dev->devfn);
 

hw/pci.c

@@ -42,6 +42,7 @@ struct PCIBus {
     pci_set_irq_fn set_irq;
     pci_map_irq_fn map_irq;
     pci_hotplug_fn hotplug;
+    DeviceState *hotplug_qdev;
     void *irq_opaque;
     PCIDevice *devices[256];
     PCIDevice *parent_dev;
@@ -233,10 +234,11 @@ 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)
+void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *qdev)
 {
     bus->qbus.allow_hotplug = 1;
     bus->hotplug = hotplug;
+    bus->hotplug_qdev = qdev;
 }
 
 void pci_bus_set_mem_base(PCIBus *bus, target_phys_addr_t base)
@@ -1661,7 +1663,7 @@ static int pci_qdev_init(DeviceState *qdev, DeviceInfo *base)
     pci_add_option_rom(pci_dev);
 
     if (qdev->hotplugged)
-        bus->hotplug(pci_dev, 1);
+        bus->hotplug(bus->hotplug_qdev, pci_dev, 1);
     return 0;
 }
 
@@ -1669,7 +1671,7 @@ static int pci_unplug_device(DeviceState *qdev)
 {
     PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev);
 
-    dev->bus->hotplug(dev, 0);
+    dev->bus->hotplug(dev->bus->hotplug_qdev, dev, 0);
     return 0;
 }
 

hw/pci.h

@@ -209,13 +209,13 @@ 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);
+typedef int (*pci_hotplug_fn)(DeviceState *qdev, 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);
+void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *dev);
 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);