search for: iommu_cap

...if (!(flags & TTM_PL_FLAG_TT) && size > 256 * 1024) > nvbo->page_shift = drm->client.vm->mmu->lpg_shift; > + > + if ((flags & TTM_PL_FLAG_TT) && > + drm->client.vm->mmu->iommu_capable && > + (size % (1 << drm->client.vm->mmu->lpg_shift)) == 0) > + nvbo->page_shift = drm->client.vm->mmu->lpg_shift; I wonder if we should not just use the same size heuristics as for VRAM above? Here,...

...(struct iommu_iotlb_gather *gather) #define IOMMU_GROUP_NOTIFY_UNBOUND_DRIVER 6 /* Post Driver unbind */ extern int bus_set_iommu(struct bus_type *bus, const struct iommu_ops *ops); +extern int bus_iommu_probe(struct bus_type *bus); extern bool iommu_present(struct bus_type *bus); extern bool iommu_capable(struct bus_type *bus, enum iommu_cap cap); extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus); -- 2.17.1

...ld 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 = { &...

Hi, Generally the the imported buffers which has memory type TTM_PL_TT are mapped as small pages probably due to lack of big page allocation. But the platform device which also use memory type TTM_PL_TT, like GK20A, can *allocate* big page though the IOMMU hardware inside the SoC. This is a try to map the imported buffers as big pages in GMMU by the platform IOMMU. With some preparation work to

...t; > > +} > > > > + > > > > 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: >...

...t; > > +} > > > > + > > > > 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: >...

..._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...

...mu.c | 24 +++++++----------------- 1 file changed, 7 insertions(+), 17 deletions(-) diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c index 0e2a96467767..054e476ebd49 100644 --- a/drivers/iommu/qcom_iommu.c +++ b/drivers/iommu/qcom_iommu.c @@ -524,14 +524,13 @@ static bool qcom_iommu_capable(enum iommu_cap cap) } } -static int qcom_iommu_add_device(struct device *dev) +static struct iommu_device *qcom_iommu_probe_device(struct device *dev) { struct qcom_iommu_dev *qcom_iommu = to_iommu(dev); - struct iommu_group *group; struct device_link *link; if (!qcom_iommu) - re...

...--------------------------- 1 file changed, 6 insertions(+), 61 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index b9f905a55dda..b906727f5b85 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -5781,78 +5781,27 @@ static bool intel_iommu_capable(enum iommu_cap cap) return false; } -static int intel_iommu_add_device(struct device *dev) +static struct iommu_device *intel_iommu_probe_device(struct device *dev) { - struct dmar_domain *dmar_domain; - struct iommu_domain *domain; struct intel_iommu *iommu; - struct iommu_group *group...

...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(vio...

...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(vio...

...uot;, 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,...

...op 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,...

...;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; > str...

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

...t;= 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 vi...

...t;= 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 vi...

...t;= 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 vi...

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