On 2014/7/31 17:10, Michael S. Tsirkin wrote:
On Thu, Jul 31, 2014 at 02:31:36PM +0800, Tiejun Chen wrote:
We'd like to split i440fx_init and then we can share something
with other stuff.
Signed-off-by: Tiejun Chen <tiejun.c...@intel.com>
I think this is too much work for very little benefit.
Just pass const char *type to i440fx_init.
You know we will introduce that faked PCIe device represented that PCH
later, so how to distinguish them? Are you saying I should check the
type like this?
if(Xen-Type)
{}
else
{}
If so, actually this is mostly same as my original implementation,
"
@@ -333,8 +348,15 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
object_property_add_child(qdev_get_machine(), "i440fx",
OBJECT(dev), NULL);
qdev_init_nofail(dev);
- d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
- *pi440fx_state = I440FX_PCI_DEVICE(d);
+ if (xen_enabled() && xen_has_gfx_passthru) {
+ d = pci_create_simple(b, 0, TYPE_I440FX_XEN_PCI_DEVICE);
+ *pi440fx_state = I440FX_XEN_PCI_DEVICE(d);
+ pci_create_pch(b);
+ } else {
+ d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
+ *pi440fx_state = I440FX_PCI_DEVICE(d);
+ }
+
f = *pi440fx_state;
f->system_memory = address_space_mem;
f->pci_address_space = pci_address_space;
"
But as I said to you last time, Paolo doesn't like we walk the common
codes :)
Tiejun
-->
i440fx: make type configurable at run-time
Xen wants to supply a different pci host device,
inheriting i440fx. Make this configurable.
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
--
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index be8fdfe..72e612b 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -230,7 +230,8 @@ extern int no_hpet;
struct PCII440FXState;
typedef struct PCII440FXState PCII440FXState;
-PCIBus *i440fx_init(PCII440FXState **pi440fx_state, int *piix_devfn,
+PCIBus *i440fx_init(const char *type,
+ PCII440FXState **pi440fx_state, int *piix_devfn,
ISABus **isa_bus, qemu_irq *pic,
MemoryRegion *address_space_mem,
MemoryRegion *address_space_io,
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 31125b7..5fefde6 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -194,7 +194,8 @@ static void pc_init1(MachineState *machine,
}
if (pci_enabled) {
- pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, &isa_bus, gsi,
+ pci_bus = i440fx_init(TYPE_I440FX_PCI_HOST_BRIDGE,
+ &i440fx_state, &piix3_devfn, &isa_bus, gsi,
system_memory, system_io, machine->ram_size,
below_4g_mem_size,
above_4g_mem_size,
diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
index e0e0946..f0c5b5d 100644
--- a/hw/pci-host/piix.c
+++ b/hw/pci-host/piix.c
@@ -305,7 +305,8 @@ static int i440fx_initfn(PCIDevice *dev)
return 0;
}
-PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
+PCIBus *i440fx_init(const char *type,
+ PCII440FXState **pi440fx_state,
int *piix3_devfn,
ISABus **isa_bus, qemu_irq *pic,
MemoryRegion *address_space_mem,
@@ -325,7 +326,7 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
unsigned i;
I440FXState *i440fx;
- dev = qdev_create(NULL, TYPE_I440FX_PCI_HOST_BRIDGE);
+ dev = qdev_create(NULL, type);
s = PCI_HOST_BRIDGE(dev);
b = pci_bus_new(dev, NULL, pci_address_space,
address_space_io, 0, TYPE_PCI_BUS);
