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virtio: pci: Allow exclusion of legacy driver 

Add a new config to control whether the driver for legacy virtio PCI
devices is included in the build. VIRTIO_PCI_LEGACY is included by
default when VIRTIO_PCI is selected, but it can also be independently
toggled.

Signed-off-by: Andrew Scull <ascull@google.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Andrew Scull 2022-04-21 16:10:59 +00:00 committed by Tom Rini
parent f8e7670f8b
commit 30471d5351
2 changed files with 11 additions and 1 deletions
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9
drivers/virtio/Kconfig
View File

@ -37,6 +37,15 @@ config VIRTIO_PCI
This driver provides support for virtio based paravirtual device This driver provides support for virtio based paravirtual device
drivers over PCI. drivers over PCI.
config VIRTIO_PCI_LEGACY
bool "PCI driver for legacy virtio devices"
depends on PCI
select VIRTIO
default VIRTIO_PCI
help
This driver provides support for legacy virtio based paravirtual
device drivers over PCI.
config VIRTIO_SANDBOX config VIRTIO_SANDBOX
bool "Sandbox driver for virtio devices" bool "Sandbox driver for virtio devices"
depends on SANDBOX depends on SANDBOX

3
drivers/virtio/Makefile
View File

@ -5,7 +5,8 @@
obj-y += virtio-uclass.o virtio_ring.o obj-y += virtio-uclass.o virtio_ring.o
obj-$(CONFIG_VIRTIO_MMIO) += virtio_mmio.o obj-$(CONFIG_VIRTIO_MMIO) += virtio_mmio.o
obj-$(CONFIG_VIRTIO_PCI) += virtio_pci_legacy.o virtio_pci_modern.o obj-$(CONFIG_VIRTIO_PCI) += virtio_pci_modern.o
obj-$(CONFIG_VIRTIO_PCI_LEGACY) += virtio_pci_legacy.o
obj-$(CONFIG_VIRTIO_SANDBOX) += virtio_sandbox.o obj-$(CONFIG_VIRTIO_SANDBOX) += virtio_sandbox.o
obj-$(CONFIG_VIRTIO_NET) += virtio_net.o obj-$(CONFIG_VIRTIO_NET) += virtio_net.o
obj-$(CONFIG_VIRTIO_BLK) += virtio_blk.o obj-$(CONFIG_VIRTIO_BLK) += virtio_blk.o