hw/ide/piix: Convert reset handler to DeviceReset

The PIIX/IDE is a PCI device within a PIIX chipset, it will be reset
when the PCI bus it stands on is reset.

Convert its reset handler into a proper Device reset method.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191010131527.32513-4-philmd@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

hw/ide/piix.c

@@ -30,7 +30,6 @@
 #include "sysemu/block-backend.h"
 #include "sysemu/blockdev.h"
 #include "sysemu/dma.h"
-#include "sysemu/reset.h"
 
 #include "hw/ide/pci.h"
 #include "trace.h"
@@ -103,9 +102,9 @@ static void bmdma_setup_bar(PCIIDEState *d)
     }
 }
 
-static void piix3_reset(void *opaque)
+static void piix_ide_reset(DeviceState *dev)
 {
-    PCIIDEState *d = opaque;
+    PCIIDEState *d = PCI_IDE(dev);
     PCIDevice *pd = PCI_DEVICE(d);
     uint8_t *pci_conf = pd->config;
     int i;
@@ -154,8 +153,6 @@ static void pci_piix_ide_realize(PCIDevice *dev, Error **errp)
 
     pci_conf[PCI_CLASS_PROG] = 0x80; // legacy ATA mode
 
-    qemu_register_reset(piix3_reset, d);
-
     bmdma_setup_bar(d);
     pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
 
@@ -247,6 +244,7 @@ static void piix3_ide_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 
+    dc->reset = piix_ide_reset;
     k->realize = pci_piix_ide_realize;
     k->exit = pci_piix_ide_exitfn;
     k->vendor_id = PCI_VENDOR_ID_INTEL;
@@ -273,6 +271,7 @@ static void piix4_ide_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 
+    dc->reset = piix_ide_reset;
     k->realize = pci_piix_ide_realize;
     k->exit = pci_piix_ide_exitfn;
     k->vendor_id = PCI_VENDOR_ID_INTEL;