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charset="utf-8" Retrieve PASID width from iommufd_backend_get_device_info() and store it in HostIOMMUDeviceCaps for later use. Reviewed-by: Jonathan Cameron Reviewed-by: Eric Auger Tested-by: Zhangfei Gao Signed-off-by: Shameer Kolothum Reviewed-by: C=C3=A9dric Le Goater Reviewed-by: Nicolin Chen --- backends/iommufd.c | 6 +++++- hw/arm/smmuv3-accel.c | 3 ++- hw/vfio/iommufd.c | 7 +++++-- include/system/host_iommu_device.h | 3 +++ include/system/iommufd.h | 3 ++- 5 files changed, 17 insertions(+), 5 deletions(-) diff --git a/backends/iommufd.c b/backends/iommufd.c index e68a2c934f..6381f9664b 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -388,7 +388,8 @@ bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *b= e, =20 bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid, uint32_t *type, void *data, uint32_t = len, - uint64_t *caps, Error **errp) + uint64_t *caps, uint8_t *max_pasid_lo= g2, + Error **errp) { struct iommu_hw_info info =3D { .size =3D sizeof(info), @@ -407,6 +408,9 @@ bool iommufd_backend_get_device_info(IOMMUFDBackend *be= , uint32_t devid, g_assert(caps); *caps =3D info.out_capabilities; =20 + if (max_pasid_log2) { + *max_pasid_log2 =3D info.out_max_pasid_log2; + } return true; } =20 diff --git a/hw/arm/smmuv3-accel.c b/hw/arm/smmuv3-accel.c index 35a94c720a..254d29ee2d 100644 --- a/hw/arm/smmuv3-accel.c +++ b/hw/arm/smmuv3-accel.c @@ -113,7 +113,8 @@ smmuv3_accel_hw_compatible(SMMUv3State *s, HostIOMMUDev= iceIOMMUFD *idev, uint64_t caps; =20 if (!iommufd_backend_get_device_info(idev->iommufd, idev->devid, &data= _type, - &info, sizeof(info), &caps, errp)= ) { + &info, sizeof(info), &caps, NULL, + errp)) { return false; } =20 diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c index ca8a6b7029..bbe944d7cc 100644 --- a/hw/vfio/iommufd.c +++ b/hw/vfio/iommufd.c @@ -353,7 +353,8 @@ static bool iommufd_cdev_autodomains_get(VFIODevice *vb= asedev, * instead. */ if (!iommufd_backend_get_device_info(vbasedev->iommufd, vbasedev->devi= d, - &type, NULL, 0, &hw_caps, errp)) { + &type, NULL, 0, &hw_caps, NULL, + errp)) { return false; } =20 @@ -889,19 +890,21 @@ static bool hiod_iommufd_vfio_realize(HostIOMMUDevice= *hiod, void *opaque, HostIOMMUDeviceCaps *caps =3D &hiod->caps; VendorCaps *vendor_caps =3D &caps->vendor_caps; enum iommu_hw_info_type type; + uint8_t max_pasid_log2; uint64_t hw_caps; =20 hiod->agent =3D opaque; =20 if (!iommufd_backend_get_device_info(vdev->iommufd, vdev->devid, &type, vendor_caps, sizeof(*vendor_caps), - &hw_caps, errp)) { + &hw_caps, &max_pasid_log2, errp))= { return false; } =20 hiod->name =3D g_strdup(vdev->name); caps->type =3D type; caps->hw_caps =3D hw_caps; + caps->max_pasid_log2 =3D max_pasid_log2; =20 idev =3D HOST_IOMMU_DEVICE_IOMMUFD(hiod); idev->iommufd =3D vdev->iommufd; diff --git a/include/system/host_iommu_device.h b/include/system/host_iommu= _device.h index ab849a4a82..bfb2b60478 100644 --- a/include/system/host_iommu_device.h +++ b/include/system/host_iommu_device.h @@ -30,6 +30,8 @@ typedef union VendorCaps { * @hw_caps: host platform IOMMU capabilities (e.g. on IOMMUFD this repres= ents * the @out_capabilities value returned from IOMMU_GET_HW_INFO i= octl) * + * @max_pasid_log2: width of PASIDs supported by host IOMMU device + * * @vendor_caps: host platform IOMMU vendor specific capabilities (e.g. on * IOMMUFD this represents a user-space buffer filled by ker= nel * with host IOMMU @type specific hardware information data) @@ -37,6 +39,7 @@ typedef union VendorCaps { typedef struct HostIOMMUDeviceCaps { uint32_t type; uint64_t hw_caps; + uint8_t max_pasid_log2; VendorCaps vendor_caps; } HostIOMMUDeviceCaps; #endif diff --git a/include/system/iommufd.h b/include/system/iommufd.h index 41e216c677..aa78bf1e1d 100644 --- a/include/system/iommufd.h +++ b/include/system/iommufd.h @@ -71,7 +71,8 @@ int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_= t ioas_id, hwaddr iova, uint64_t size); bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid, uint32_t *type, void *data, uint32_t = len, - uint64_t *caps, Error **errp); + uint64_t *caps, uint8_t *max_pasid_lo= g2, + Error **errp); bool iommufd_backend_alloc_hwpt(IOMMUFDBackend *be, uint32_t dev_id, uint32_t pt_id, uint32_t flags, uint32_t data_type, uint32_t data_len, --=20 2.43.0