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| author | Eric Auger <eric.auger@redhat.com> | 2020-07-03 16:59:41 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-07-03 16:59:41 +0100 |
| commit | f78069253ccf25c64e19e9889b98e499336f6c6e (patch) | |
| tree | 58303aadc1e9a6dc7054383ee1fd437fca082dc8 /include | |
| parent | 6552bbc6a3de22f0d975091a07f180e7baf1915b (diff) | |
| download | focaccia-qemu-f78069253ccf25c64e19e9889b98e499336f6c6e.tar.gz focaccia-qemu-f78069253ccf25c64e19e9889b98e499336f6c6e.zip | |
qdev: Introduce DEFINE_PROP_RESERVED_REGION
Introduce a new property defining a reserved region: <low address>:<high address>:<type>. This will be used to encode reserved IOVA regions. For instance, in virtio-iommu use case, reserved IOVA regions will be passed by the machine code to the virtio-iommu-pci device (an array of those). The type of the reserved region will match the virtio_iommu_probe_resv_mem subtype value: - VIRTIO_IOMMU_RESV_MEM_T_RESERVED (0) - VIRTIO_IOMMU_RESV_MEM_T_MSI (1) on PC/Q35 machine, this will be used to inform the virtio-iommu-pci device it should bypass the MSI region. The reserved region will be: 0xfee00000:0xfeefffff:1. On ARM, we can declare the ITS MSI doorbell as an MSI region to prevent MSIs from being mapped on guest side. Signed-off-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Message-id: 20200629070404.10969-2-eric.auger@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/exec/memory.h | 6 | ||||
| -rw-r--r-- | include/hw/qdev-properties.h | 3 | ||||
| -rw-r--r-- | include/qemu/typedefs.h | 1 |
3 files changed, 10 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index 7207025bd4..84ee5b7a01 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -51,6 +51,12 @@ extern bool global_dirty_log; typedef struct MemoryRegionOps MemoryRegionOps; +struct ReservedRegion { + hwaddr low; + hwaddr high; + unsigned type; +}; + typedef struct IOMMUTLBEntry IOMMUTLBEntry; /* See address_space_translate: bit 0 is read, bit 1 is write. */ diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index 49c6cd2460..944e3f2e0c 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -19,6 +19,7 @@ extern const PropertyInfo qdev_prop_string; extern const PropertyInfo qdev_prop_chr; extern const PropertyInfo qdev_prop_tpm; extern const PropertyInfo qdev_prop_macaddr; +extern const PropertyInfo qdev_prop_reserved_region; extern const PropertyInfo qdev_prop_on_off_auto; extern const PropertyInfo qdev_prop_multifd_compression; extern const PropertyInfo qdev_prop_losttickpolicy; @@ -184,6 +185,8 @@ extern const PropertyInfo qdev_prop_pcie_link_width; DEFINE_PROP(_n, _s, _f, qdev_prop_drive_iothread, BlockBackend *) #define DEFINE_PROP_MACADDR(_n, _s, _f) \ DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr) +#define DEFINE_PROP_RESERVED_REGION(_n, _s, _f) \ + DEFINE_PROP(_n, _s, _f, qdev_prop_reserved_region, ReservedRegion) #define DEFINE_PROP_ON_OFF_AUTO(_n, _s, _f, _d) \ DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_on_off_auto, OnOffAuto) #define DEFINE_PROP_MULTIFD_COMPRESSION(_n, _s, _f, _d) \ diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h index ce4a78b687..15f5047bf1 100644 --- a/include/qemu/typedefs.h +++ b/include/qemu/typedefs.h @@ -58,6 +58,7 @@ typedef struct ISABus ISABus; typedef struct ISADevice ISADevice; typedef struct IsaDma IsaDma; typedef struct MACAddr MACAddr; +typedef struct ReservedRegion ReservedRegion; typedef struct MachineClass MachineClass; typedef struct MachineState MachineState; typedef struct MemoryListener MemoryListener; |