hw/vfio/Makefile.objs: Create new CONFIG_* variables for VFIO core and PCI

Make hw/vfio configurable and add new CONFIG_VFIO_* to the
default-configs/s390x*-softmmu.mak.  This allow a finer-grain
selection of the various VFIO backends.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20190202072456.6468-28-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

default-configs/arm-softmmu.mak

@@ -124,6 +124,8 @@ CONFIG_VERSATILE_PCI=y
 CONFIG_VERSATILE_I2C=y
 
 CONFIG_PCI_EXPRESS_GENERIC_BRIDGE=y
+CONFIG_VFIO=$(CONFIG_LINUX)
+CONFIG_VFIO_PLATFORM=y
 CONFIG_VFIO_XGMAC=y
 CONFIG_VFIO_AMD_XGBE=y
 

default-configs/pci.mak

@@ -47,3 +47,5 @@ CONFIG_VGA_PCI=y
 CONFIG_BOCHS_DISPLAY=y
 CONFIG_IVSHMEM_DEVICE=$(CONFIG_IVSHMEM)
 CONFIG_ROCKER=y
+CONFIG_VFIO=$(CONFIG_LINUX)
+CONFIG_VFIO_PCI=y

default-configs/s390x-softmmu.mak

@@ -5,7 +5,8 @@ CONFIG_SCLPCONSOLE=y
 CONFIG_TERMINAL3270=y
 CONFIG_S390_FLIC=y
 CONFIG_S390_FLIC_KVM=$(CONFIG_KVM)
-CONFIG_VFIO_CCW=$(CONFIG_LINUX)
 CONFIG_WDT_DIAG288=y
-CONFIG_VFIO_AP=$(CONFIG_LINUX)
 CONFIG_S390_CCW_VIRTIO=y
+CONFIG_VFIO=$(CONFIG_LINUX)
+CONFIG_VFIO_CCW=y
+CONFIG_VFIO_AP=y

hw/Makefile.objs

@@ -30,7 +30,7 @@ devices-dirs-$(CONFIG_SOFTMMU) += ssi/
 devices-dirs-$(CONFIG_SOFTMMU) += timer/
 devices-dirs-$(CONFIG_TPM) += tpm/
 devices-dirs-$(CONFIG_SOFTMMU) += usb/
-devices-dirs-$(CONFIG_LINUX) += vfio/
+devices-dirs-$(CONFIG_VFIO) += vfio/
 devices-dirs-$(CONFIG_SOFTMMU) += virtio/
 devices-dirs-$(CONFIG_SOFTMMU) += watchdog/
 devices-dirs-$(CONFIG_SOFTMMU) += xen/

hw/vfio/Makefile.objs

@@ -1,8 +1,7 @@
-obj-$(CONFIG_SOFTMMU) += common.o
-obj-$(CONFIG_PCI) += pci.o pci-quirks.o display.o
+obj-y += common.o spapr.o
+obj-$(CONFIG_VFIO_PCI) += pci.o pci-quirks.o display.o
 obj-$(CONFIG_VFIO_CCW) += ccw.o
-obj-$(CONFIG_SOFTMMU) += platform.o
+obj-$(CONFIG_VFIO_PLATFORM) += platform.o
 obj-$(CONFIG_VFIO_XGMAC) += calxeda-xgmac.o
 obj-$(CONFIG_VFIO_AMD_XGBE) += amd-xgbe.o
-obj-$(CONFIG_SOFTMMU) += spapr.o
 obj-$(CONFIG_VFIO_AP) += ap.o