search for: viommu_capable

...uld allow dropping this one Thanks, Jean > + viommu_sync_req(vdomain->viommu); > +} > + > static void viommu_get_resv_regions(struct device *dev, struct list_head *head) > { > struct iommu_resv_region *entry, *new_entry, *msi = NULL; > @@ -1049,6 +1058,8 @@ static bool viommu_capable(struct device *dev, enum iommu_cap cap) > switch (cap) { > case IOMMU_CAP_CACHE_COHERENCY: > return true; > + case IOMMU_CAP_DEFERRED_FLUSH: > + return true; > default: > return false; > } > @@ -1069,6 +1080,7 @@ static struct iommu_ops viommu_ops = { >...

...gt; > > +} > > > > + > > > > static void viommu_get_resv_regions(struct device *dev, struct list_head *head) > > > > { > > > > struct iommu_resv_region *entry, *new_entry, *msi = NULL; > > > > @@ -1049,6 +1058,8 @@ static bool viommu_capable(struct device *dev, enum iommu_cap cap) > > > > switch (cap) { > > > > case IOMMU_CAP_CACHE_COHERENCY: > > > > return true; > > > > + case IOMMU_CAP_DEFERRED_FLUSH: > > > > + return true; > > > > default: > &gt...

...gt; > > +} > > > > + > > > > static void viommu_get_resv_regions(struct device *dev, struct list_head *head) > > > > { > > > > struct iommu_resv_region *entry, *new_entry, *msi = NULL; > > > > @@ -1049,6 +1058,8 @@ static bool viommu_capable(struct device *dev, enum iommu_cap cap) > > > > switch (cap) { > > > > case IOMMU_CAP_CACHE_COHERENCY: > > > > return true; > > > > + case IOMMU_CAP_DEFERRED_FLUSH: > > > > + return true; > > > > default: > &gt...

...d_inbuf(vq, sg, 1, evt, GFP_ATOMIC); > + if (ret) > + dev_err(viommu->dev, "could not add event buffer\n"); > + } > + > + if (!virtqueue_kick(vq)) > + dev_err(viommu->dev, "kick failed\n"); > +} > + > /* IOMMU API */ > > static bool viommu_capable(enum iommu_cap cap) > @@ -938,19 +1018,44 @@ static struct iommu_ops viommu_ops = { > .put_resv_regions = viommu_put_resv_regions, > }; > > -static int viommu_init_vq(struct viommu_dev *viommu) > +static int viommu_init_vqs(struct viommu_dev *viommu) > { > struct vir...

Implement the virtio-iommu driver following version 0.5 of the specification [1]. Previous version of this code was sent back in April [2], implementing the first public RFC. Since then there has been lots of progress and discussion on the specification side, and I think the driver is in a good shape now. The reason patches 1-3 are only RFC is that I'm waiting on feedback from the Virtio TC

Implement the virtio-iommu driver following version 0.5 of the specification [1]. Previous version of this code was sent back in April [2], implementing the first public RFC. Since then there has been lots of progress and discussion on the specification side, and I think the driver is in a good shape now. The reason patches 1-3 are only RFC is that I'm waiting on feedback from the Virtio TC

..._init_one(sg, evt, sizeof(*evt)); + ret = virtqueue_add_inbuf(vq, sg, 1, evt, GFP_ATOMIC); + if (ret) + dev_err(viommu->dev, "could not add event buffer\n"); + } + + if (!virtqueue_kick(vq)) + dev_err(viommu->dev, "kick failed\n"); +} + /* IOMMU API */ static bool viommu_capable(enum iommu_cap cap) @@ -934,19 +1015,44 @@ static struct iommu_ops viommu_ops = { .put_resv_regions = viommu_put_resv_regions, }; -static int viommu_init_vq(struct viommu_dev *viommu) +static int viommu_init_vqs(struct viommu_dev *viommu) { struct virtio_device *vdev = dev_to_virtio(viommu-...

..._init_one(sg, evt, sizeof(*evt)); + ret = virtqueue_add_inbuf(vq, sg, 1, evt, GFP_ATOMIC); + if (ret) + dev_err(viommu->dev, "could not add event buffer\n"); + } + + if (!virtqueue_kick(vq)) + dev_err(viommu->dev, "kick failed\n"); +} + /* IOMMU API */ static bool viommu_capable(enum iommu_cap cap) @@ -938,19 +1018,44 @@ static struct iommu_ops viommu_ops = { .put_resv_regions = viommu_put_resv_regions, }; -static int viommu_init_vq(struct viommu_dev *viommu) +static int viommu_init_vqs(struct viommu_dev *viommu) { struct virtio_device *vdev = dev_to_virtio(viommu-...

...de, 0, -1UL); > + i++; > + } > + spin_unlock_irqrestore(&vdomain->mappings_lock, flags); > + > + ret = viommu_send_reqs_sync(vdomain->viommu, reqs, i, &nr_sent); > + kfree(reqs); > + > + return ret; > +} > + > +/* IOMMU API */ > + > +static bool viommu_capable(enum iommu_cap cap) > +{ > + return false; > +} The .capable callback is optional, so it's only worth implementing once you want it to do something beyond the default behaviour. > + > +static struct iommu_domain *viommu_domain_alloc(unsigned type) > +{ > + struct viommu_...

Implement the virtio-iommu driver following version 0.6 of the specification [1]. Previous version, RFCv2, was sent in November [2]. This version addresses Eric's comments and changes the device number. (Since last week I also tested and fixed the probe/release functions, they now use devm properly.) I did not include ACPI support because the next IORT specifications isn't ready yet (even

Implement the virtio-iommu driver following version 0.6 of the specification [1]. Previous version, RFCv2, was sent in November [2]. This version addresses Eric's comments and changes the device number. (Since last week I also tested and fixed the probe/release functions, they now use devm properly.) I did not include ACPI support because the next IORT specifications isn't ready yet (even

...quot;, type); + + cur += sizeof(*prop) + len; + if (cur >= viommu->probe_size) + break; + + prop = (void *)probe->properties + cur; + type = le16_to_cpu(prop->type) & VIRTIO_IOMMU_PROBE_T_MASK; + } + +out_free: + kfree(probe); + return ret; +} + /* IOMMU API */ static bool viommu_capable(enum iommu_cap cap) @@ -703,6 +808,7 @@ static struct viommu_dev *viommu_get_by_fwnode(struct fwnode_handle *fwnode) static int viommu_add_device(struct device *dev) { + int ret; struct iommu_group *group; struct viommu_endpoint *vdev; struct viommu_dev *viommu = NULL; @@ -720,8 +826,16 @...

...rop 0x%x\n", type); + + cur += sizeof(*prop) + len; + if (cur >= viommu->probe_size) + break; + + prop = (void *)probe->properties + cur; + type = le16_to_cpu(prop->type) & VIRTIO_IOMMU_PROBE_T_MASK; + } + + kfree(probe); + + return 0; +} + /* IOMMU API */ static bool viommu_capable(enum iommu_cap cap) @@ -706,6 +812,7 @@ static struct viommu_dev *viommu_get_by_fwnode(struct fwnode_handle *fwnode) static int viommu_add_device(struct device *dev) { + int ret; struct iommu_group *group; struct viommu_endpoint *vdev; struct viommu_dev *viommu = NULL; @@ -723,8 +830,16 @...

...t;probe_size) > + break; > + > + prop = (void *)probe->properties + cur; > + type = le16_to_cpu(prop->type) & VIRTIO_IOMMU_PROBE_T_MASK; > + } > + > +out_free: > + kfree(probe); > + return ret; > +} > + > /* IOMMU API */ > > static bool viommu_capable(enum iommu_cap cap) > @@ -703,6 +808,7 @@ static struct viommu_dev *viommu_get_by_fwnode(struct fwnode_handle *fwnode) > > static int viommu_add_device(struct device *dev) > { > + int ret; > struct iommu_group *group; > struct viommu_endpoint *vdev; > struct...

...ail, + bottom_size); + + node = interval_tree_iter_next(node, 0, -1UL); + i++; + } + spin_unlock_irqrestore(&vdomain->mappings_lock, flags); + + ret = viommu_send_reqs_sync(vdomain->viommu, reqs, i, &nr_sent); + kfree(reqs); + + return ret; +} + +/* IOMMU API */ + +static bool viommu_capable(enum iommu_cap cap) +{ + return false; +} + +static struct iommu_domain *viommu_domain_alloc(unsigned type) +{ + struct viommu_domain *vdomain; + + if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) + return NULL; + + vdomain = kzalloc(sizeof(*vdomain), GFP_KERNEL); + if (!vdo...

...); + sg_init_one(&reqs[i].bottom, &mapping->req.map.tail, + bottom_size); + + node = interval_tree_iter_next(node, 0, -1UL); + i++; + } + + ret = viommu_send_reqs_sync(vdomain->viommu, reqs, i, &nr_sent); + kfree(reqs); + + return ret; +} + +/* IOMMU API */ + +static bool viommu_capable(enum iommu_cap cap) +{ + return false; /* :( */ +} + +static struct iommu_domain *viommu_domain_alloc(unsigned type) +{ + struct viommu_domain *vdomain; + + if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) + return NULL; + + vdomain = kzalloc(sizeof(*vdomain), GFP_KERNEL); +...

...gt;= viommu->probe_size) > + break; > + > + prop = (void *)probe->properties + cur; > + type = le16_to_cpu(prop->type) & VIRTIO_IOMMU_PROBE_T_MASK; > + } > + > + kfree(probe); > + > + return 0; > +} > + > /* IOMMU API */ > > static bool viommu_capable(enum iommu_cap cap) > @@ -706,6 +812,7 @@ static struct viommu_dev *viommu_get_by_fwnode(struct fwnode_handle *fwnode) > > static int viommu_add_device(struct device *dev) > { > + int ret; > struct iommu_group *group; > struct viommu_endpoint *vdev; > struct viommu...

...ests to the device. + */ + unmapped += mapping->iova.last - mapping->iova.start + 1; + + interval_tree_remove(node, &vdomain->mappings); + kfree(mapping); + } + spin_unlock_irqrestore(&vdomain->mappings_lock, flags); + + return unmapped; +} + +/* IOMMU API */ + +static bool viommu_capable(enum iommu_cap cap) +{ + return false; /* :( */ +} + +static struct iommu_domain *viommu_domain_alloc(unsigned type) +{ + struct viommu_domain *vdomain; + + if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) + return NULL; + + vdomain = kzalloc(sizeof(struct viommu_domain), GF...

...gt;= viommu->probe_size) > + break; > + > + prop = (void *)probe->properties + cur; > + type = le16_to_cpu(prop->type) & VIRTIO_IOMMU_PROBE_T_MASK; > + } > + > + kfree(probe); > + > + return 0; > +} > + > /* IOMMU API */ > > static bool viommu_capable(enum iommu_cap cap) > @@ -706,6 +812,7 @@ static struct viommu_dev *viommu_get_by_fwnode(struct fwnode_handle *fwnode) > > static int viommu_add_device(struct device *dev) > { > + int ret; > struct iommu_group *group; > struct viommu_endpoint *vdev; > struct viommu...

...gt;= viommu->probe_size) > + break; > + > + prop = (void *)probe->properties + cur; > + type = le16_to_cpu(prop->type) & VIRTIO_IOMMU_PROBE_T_MASK; > + } > + > + kfree(probe); > + > + return 0; > +} > + > /* IOMMU API */ > > static bool viommu_capable(enum iommu_cap cap) > @@ -706,6 +812,7 @@ static struct viommu_dev *viommu_get_by_fwnode(struct fwnode_handle *fwnode) > > static int viommu_add_device(struct device *dev) > { > + int ret; > struct iommu_group *group; > struct viommu_endpoint *vdev; > struct viommu...