kconfig: Add PCIe devices to s390x machines

It is useful to extend the number of available PCIe devices to KVM guests for passthrough scenarios and also to expose these models to a different (big endian) architecture. Introduce a new config PCIE_DEVICES to select models, Intel Ethernet adapters and one USB controller. These devices all support MSI-X which is a requirement on s390x as legacy INTx are not supported. Cc: Matthew Rosato <mjrosato@linux.ibm.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Thomas Huth <thuth@redhat.com> Signed-off-by: Cédric Le Goater <clg@redhat.com> Message-ID: <20230712080146.839113-1-clg@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
qemu · Jul 14, 2023 · cc9ff56 · cc9ff56
1 parent 230dfd9
commit cc9ff56
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Showing 5 changed files with 9 additions and 4 deletions.
diff --git a/configs/devices/s390x-softmmu/default.mak b/configs/devices/s390x-softmmu/default.mak
@@ -7,6 +7,7 @@
 #CONFIG_VFIO_CCW=n
 #CONFIG_VIRTIO_PCI=n
 #CONFIG_WDT_DIAG288=n
+#CONFIG_PCIE_DEVICES=n
 
 # Boards:
 #

diff --git a/hw/net/Kconfig b/hw/net/Kconfig
@@ -41,12 +41,12 @@ config E1000_PCI
 
 config E1000E_PCI_EXPRESS
     bool
-    default y if PCI_DEVICES
+    default y if PCI_DEVICES || PCIE_DEVICES
     depends on PCI_EXPRESS && MSI_NONBROKEN
 
 config IGB_PCI_EXPRESS
     bool
-    default y if PCI_DEVICES
+    default y if PCI_DEVICES || PCIE_DEVICES
     depends on PCI_EXPRESS && MSI_NONBROKEN
 
 config RTL8139_PCI

diff --git a/hw/pci/Kconfig b/hw/pci/Kconfig
@@ -8,6 +8,9 @@ config PCI_EXPRESS
 config PCI_DEVICES
     bool
 
+config PCIE_DEVICES
+    bool
+
 config MSI_NONBROKEN
     # selected by interrupt controllers that do not support MSI,
     # or support it and have a good implementation. See commit

diff --git a/hw/s390x/Kconfig b/hw/s390x/Kconfig
@@ -5,7 +5,8 @@ config S390_CCW_VIRTIO
     imply VFIO_AP
     imply VFIO_CCW
     imply WDT_DIAG288
-    select PCI
+    imply PCIE_DEVICES
+    select PCI_EXPRESS
     select S390_FLIC
     select SCLPCONSOLE
     select VIRTIO_CCW

diff --git a/hw/usb/Kconfig b/hw/usb/Kconfig
@@ -36,7 +36,7 @@ config USB_XHCI
 
 config USB_XHCI_PCI
     bool
-    default y if PCI_DEVICES
+    default y if PCI_DEVICES || PCIE_DEVICES
     depends on PCI
     select USB_XHCI