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[Qemu-devel] [RFC 3/7] pci: Change pci_bus_new*() parameter to PCIHostSt


From: Eduardo Habkost
Subject: [Qemu-devel] [RFC 3/7] pci: Change pci_bus_new*() parameter to PCIHostState
Date: Mon, 17 Apr 2017 18:59:12 -0300

The pci_bus_new*() functions already require the 'parent' argument to be
a PCI_HOST_BRIDGE object. Change the parameter type to reflect that.

Cc: "Michael S. Tsirkin" <address@hidden>
Cc: Marcel Apfelbaum <address@hidden>
Cc: "Hervé Poussineau" <address@hidden>
Cc: Peter Maydell <address@hidden>
Cc: address@hidden
Cc: address@hidden
Signed-off-by: Eduardo Habkost <address@hidden>
---
 include/hw/pci/pci.h                |  5 +++--
 hw/pci-bridge/pci_expander_bridge.c | 15 ++++++++-------
 hw/pci-host/piix.c                  |  2 +-
 hw/pci-host/prep.c                  |  2 +-
 hw/pci-host/q35.c                   |  2 +-
 hw/pci-host/versatile.c             |  2 +-
 hw/pci/pci.c                        | 13 ++++++-------
 7 files changed, 21 insertions(+), 20 deletions(-)

diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index a37a2d5cb6..2242aa25eb 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -393,12 +393,13 @@ typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, 
int pin);
 
 bool pci_bus_is_express(PCIBus *bus);
 bool pci_bus_is_root(PCIBus *bus);
-void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent,
+void pci_bus_new_inplace(PCIBus *bus, size_t bus_size,
+                         PCIHostState *phb,
                          const char *name,
                          MemoryRegion *address_space_mem,
                          MemoryRegion *address_space_io,
                          uint8_t devfn_min, const char *typename);
-PCIBus *pci_bus_new(DeviceState *parent, const char *name,
+PCIBus *pci_bus_new(PCIHostState *phb, const char *name,
                     MemoryRegion *address_space_mem,
                     MemoryRegion *address_space_io,
                     uint8_t devfn_min, const char *typename);
diff --git a/hw/pci-bridge/pci_expander_bridge.c 
b/hw/pci-bridge/pci_expander_bridge.c
index 6ac187fa32..39d29d2230 100644
--- a/hw/pci-bridge/pci_expander_bridge.c
+++ b/hw/pci-bridge/pci_expander_bridge.c
@@ -213,7 +213,8 @@ static gint pxb_compare(gconstpointer a, gconstpointer b)
 static void pxb_dev_realize_common(PCIDevice *dev, bool pcie, Error **errp)
 {
     PXBDev *pxb = convert_to_pxb(dev);
-    DeviceState *ds, *bds = NULL;
+    DeviceState *bds = NULL;
+    PCIHostState *phb;
     PCIBus *bus;
     const char *dev_name = NULL;
     Error *local_err = NULL;
@@ -228,11 +229,11 @@ static void pxb_dev_realize_common(PCIDevice *dev, bool 
pcie, Error **errp)
         dev_name = dev->qdev.id;
     }
 
-    ds = qdev_create(NULL, TYPE_PXB_HOST);
+    phb = PCI_HOST_BRIDGE(qdev_create(NULL, TYPE_PXB_HOST));
     if (pcie) {
-        bus = pci_bus_new(ds, dev_name, NULL, NULL, 0, TYPE_PXB_PCIE_BUS);
+        bus = pci_bus_new(phb, dev_name, NULL, NULL, 0, TYPE_PXB_PCIE_BUS);
     } else {
-        bus = pci_bus_new(ds, "pxb-internal", NULL, NULL, 0, TYPE_PXB_BUS);
+        bus = pci_bus_new(phb, "pxb-internal", NULL, NULL, 0, TYPE_PXB_BUS);
         bds = qdev_create(BUS(bus), "pci-bridge");
         bds->id = dev_name;
         qdev_prop_set_uint8(bds, PCI_BRIDGE_DEV_PROP_CHASSIS_NR, pxb->bus_nr);
@@ -244,7 +245,7 @@ static void pxb_dev_realize_common(PCIDevice *dev, bool 
pcie, Error **errp)
     bus->address_space_io = dev->bus->address_space_io;
     bus->map_irq = pxb_map_irq_fn;
 
-    PCI_HOST_BRIDGE(ds)->bus = bus;
+    phb->bus = bus;
 
     pxb_register_bus(dev, bus, &local_err);
     if (local_err) {
@@ -252,7 +253,7 @@ static void pxb_dev_realize_common(PCIDevice *dev, bool 
pcie, Error **errp)
         goto err_register_bus;
     }
 
-    qdev_init_nofail(ds);
+    qdev_init_nofail(DEVICE(phb));
     if (bds) {
         qdev_init_nofail(bds);
     }
@@ -267,7 +268,7 @@ static void pxb_dev_realize_common(PCIDevice *dev, bool 
pcie, Error **errp)
 err_register_bus:
     object_unref(OBJECT(bds));
     object_unparent(OBJECT(bus));
-    object_unref(OBJECT(ds));
+    object_unref(OBJECT(phb));
 }
 
 static void pxb_dev_realize(PCIDevice *dev, Error **errp)
diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
index f9218aa952..91fec05b38 100644
--- a/hw/pci-host/piix.c
+++ b/hw/pci-host/piix.c
@@ -340,7 +340,7 @@ PCIBus *i440fx_init(const char *host_type, const char 
*pci_type,
 
     dev = qdev_create(NULL, host_type);
     s = PCI_HOST_BRIDGE(dev);
-    b = pci_bus_new(dev, NULL, pci_address_space,
+    b = pci_bus_new(s, NULL, pci_address_space,
                     address_space_io, 0, TYPE_PCI_BUS);
     s->bus = b;
     object_property_add_child(qdev_get_machine(), "i440fx", OBJECT(dev), NULL);
diff --git a/hw/pci-host/prep.c b/hw/pci-host/prep.c
index 260a119a9e..2e2cd267f4 100644
--- a/hw/pci-host/prep.c
+++ b/hw/pci-host/prep.c
@@ -269,7 +269,7 @@ static void raven_pcihost_initfn(Object *obj)
     memory_region_add_subregion_overlap(address_space_mem, 0x80000000,
                                         &s->pci_io_non_contiguous, 1);
     memory_region_add_subregion(address_space_mem, 0xc0000000, &s->pci_memory);
-    pci_bus_new_inplace(&s->pci_bus, sizeof(s->pci_bus), DEVICE(obj), NULL,
+    pci_bus_new_inplace(&s->pci_bus, sizeof(s->pci_bus), h, NULL,
                         &s->pci_memory, &s->pci_io, 0, TYPE_PCI_BUS);
 
     /* Bus master address space */
diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
index 344f77b10c..860b47a1ba 100644
--- a/hw/pci-host/q35.c
+++ b/hw/pci-host/q35.c
@@ -49,7 +49,7 @@ static void q35_host_realize(DeviceState *dev, Error **errp)
     sysbus_add_io(sbd, MCH_HOST_BRIDGE_CONFIG_DATA, &pci->data_mem);
     sysbus_init_ioports(sbd, MCH_HOST_BRIDGE_CONFIG_DATA, 4);
 
-    pci->bus = pci_bus_new(DEVICE(s), "pcie.0",
+    pci->bus = pci_bus_new(pci, "pcie.0",
                            s->mch.pci_address_space, s->mch.address_space_io,
                            0, TYPE_PCIE_BUS);
     PC_MACHINE(qdev_get_machine())->bus = pci->bus;
diff --git a/hw/pci-host/versatile.c b/hw/pci-host/versatile.c
index 467cbb9cb8..24ef87610b 100644
--- a/hw/pci-host/versatile.c
+++ b/hw/pci-host/versatile.c
@@ -386,7 +386,7 @@ static void pci_vpb_init(Object *obj)
     memory_region_init(&s->pci_io_space, OBJECT(s), "pci_io", 1ULL << 32);
     memory_region_init(&s->pci_mem_space, OBJECT(s), "pci_mem", 1ULL << 32);
 
-    pci_bus_new_inplace(&s->pci_bus, sizeof(s->pci_bus), DEVICE(obj), "pci",
+    pci_bus_new_inplace(&s->pci_bus, sizeof(s->pci_bus), h, "pci",
                         &s->pci_mem_space, &s->pci_io_space,
                         PCI_DEVFN(11, 0), TYPE_PCI_BUS);
     h->bus = &s->pci_bus;
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index d9535c0bdc..f4488b46fc 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -388,26 +388,25 @@ bool pci_bus_is_root(PCIBus *bus)
     return PCI_BUS_GET_CLASS(bus)->is_root(bus);
 }
 
-void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent,
+void pci_bus_new_inplace(PCIBus *bus, size_t bus_size,
+                         PCIHostState *phb,
                          const char *name,
                          MemoryRegion *address_space_mem,
                          MemoryRegion *address_space_io,
                          uint8_t devfn_min, const char *typename)
 {
-    PCIHostState *phb = PCI_HOST_BRIDGE(parent);
-    qbus_create_inplace(bus, bus_size, typename, parent, name);
+    qbus_create_inplace(bus, bus_size, typename, DEVICE(phb), name);
     pci_bus_init(bus, phb, address_space_mem, address_space_io, devfn_min);
 }
 
-PCIBus *pci_bus_new(DeviceState *parent, const char *name,
+PCIBus *pci_bus_new(PCIHostState *phb, const char *name,
                     MemoryRegion *address_space_mem,
                     MemoryRegion *address_space_io,
                     uint8_t devfn_min, const char *typename)
 {
-    PCIHostState *phb = PCI_HOST_BRIDGE(parent);
     PCIBus *bus;
 
-    bus = PCI_BUS(qbus_create(typename, parent, name));
+    bus = PCI_BUS(qbus_create(typename, DEVICE(phb), name));
     pci_bus_init(bus, phb, address_space_mem, address_space_io, devfn_min);
     return bus;
 }
@@ -431,7 +430,7 @@ PCIBus *pci_register_bus(DeviceState *parent, const char 
*name,
 {
     PCIBus *bus;
 
-    bus = pci_bus_new(parent, name, address_space_mem,
+    bus = pci_bus_new(PCI_HOST_BRIDGE(parent), name, address_space_mem,
                       address_space_io, devfn_min, typename);
     pci_bus_irqs(bus, set_irq, map_irq, irq_opaque, nirq);
     return bus;
-- 
2.11.0.259.g40922b1




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