From: Vivek Gautam <vivek.gautam@arm.com>
To: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
iommu@lists.linux-foundation.org,
virtualization@lists.linux-foundation.org
Cc: joro@8bytes.org, will.deacon@arm.com, mst@redhat.com,
robin.murphy@arm.com, jean-philippe@linaro.org,
eric.auger@redhat.com, kevin.tian@intel.com,
jacob.jun.pan@linux.intel.com, yi.l.liu@intel.com,
Lorenzo.Pieralisi@arm.com, shameerali.kolothum.thodi@huawei.com,
Vivek Gautam <vivek.gautam@arm.com>
Subject: [PATCH RFC v1 10/11] uapi/virtio-iommu: Add a new request type to send page response
Date: Fri, 23 Apr 2021 15:21:46 +0530 [thread overview]
Message-ID: <20210423095147.27922-11-vivek.gautam@arm.com> (raw)
In-Reply-To: <20210423095147.27922-1-vivek.gautam@arm.com>
Once the page faults are handled, the response has to be sent to
virtio-iommu backend, from where it can be sent to the host to
prepare the response to a generated io page fault by the device.
Add a new virt-queue request type to handle this.
Signed-off-by: Vivek Gautam <vivek.gautam@arm.com>
---
include/uapi/linux/virtio_iommu.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/include/uapi/linux/virtio_iommu.h b/include/uapi/linux/virtio_iommu.h
index c12d9b6a7243..1b174b98663a 100644
--- a/include/uapi/linux/virtio_iommu.h
+++ b/include/uapi/linux/virtio_iommu.h
@@ -48,6 +48,7 @@ struct virtio_iommu_config {
#define VIRTIO_IOMMU_T_PROBE 0x05
#define VIRTIO_IOMMU_T_ATTACH_TABLE 0x06
#define VIRTIO_IOMMU_T_INVALIDATE 0x07
+#define VIRTIO_IOMMU_T_PAGE_RESP 0x08
/* Status types */
#define VIRTIO_IOMMU_S_OK 0x00
@@ -70,6 +71,23 @@ struct virtio_iommu_req_tail {
__u8 reserved[3];
};
+struct virtio_iommu_req_page_resp {
+ struct virtio_iommu_req_head head;
+ __le32 domain;
+ __le32 endpoint;
+#define VIRTIO_IOMMU_PAGE_RESP_PASID_VALID (1 << 0)
+ __le32 flags;
+ __le32 pasid;
+ __le32 grpid;
+#define VIRTIO_IOMMU_PAGE_RESP_SUCCESS (0x0)
+#define VIRTIO_IOMMU_PAGE_RESP_INVALID (0x1)
+#define VIRTIO_IOMMU_PAGE_RESP_FAILURE (0x2)
+ __le16 resp_code;
+ __u8 pasid_valid;
+ __u8 reserved[9];
+ struct virtio_iommu_req_tail tail;
+};
+
struct virtio_iommu_req_attach {
struct virtio_iommu_req_head head;
__le32 domain;
--
2.17.1
next prev parent reply other threads:[~2021-04-23 9:52 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-23 9:51 [PATCH RFC v1 00/11] iommu/virtio: vSVA support with Arm Vivek Gautam
2021-04-23 9:51 ` [PATCH RFC v1 01/11] uapi/virtio-iommu: Add page request grp-id and flags information Vivek Gautam
2021-09-21 15:58 ` Jean-Philippe Brucker
2021-09-30 4:56 ` Vivek Kumar Gautam
2021-09-30 8:49 ` Jean-Philippe Brucker
2021-09-30 10:57 ` Vivek Kumar Gautam
2021-04-23 9:51 ` [PATCH RFC v1 02/11] iommu/virtio: Maintain a list of endpoints served by viommu_dev Vivek Gautam
2021-09-21 15:59 ` Jean-Philippe Brucker
2021-09-30 9:17 ` Vivek Kumar Gautam
2021-04-23 9:51 ` [PATCH RFC v1 03/11] iommu/virtio: Handle incoming page faults Vivek Gautam
2021-09-21 16:03 ` Jean-Philippe Brucker
2021-10-11 8:11 ` Vivek Gautam
2021-10-11 9:16 ` Jean-Philippe Brucker
2021-10-11 9:20 ` Vivek Kumar Gautam
2021-04-23 9:51 ` [PATCH RFC v1 04/11] iommu/virtio: Add a io page fault queue Vivek Gautam
2021-04-23 9:51 ` [PATCH RFC v1 05/11] iommu/virtio: Add SVA feature and related enable/disable callbacks Vivek Gautam
2021-09-21 16:04 ` Jean-Philippe Brucker
2021-04-23 9:51 ` [PATCH RFC v1 06/11] iommu/pasid-table: Add pasid table ops for shared context management Vivek Gautam
2021-04-23 9:51 ` [PATCH RFC v1 07/11] iommu/arm-smmu-v3: Move shared context descriptor code to cd-lib Vivek Gautam
2021-04-23 9:51 ` [PATCH RFC v1 08/11] iommu/arm-smmu-v3: Implement shared context alloc and free ops Vivek Gautam
2021-09-21 16:07 ` Jean-Philippe Brucker
2021-09-30 9:50 ` Vivek Kumar Gautam
2021-04-23 9:51 ` [PATCH RFC v1 09/11] iommu/virtio: Implement sva bind/unbind calls Vivek Gautam
2021-09-21 16:09 ` Jean-Philippe Brucker
2021-04-23 9:51 ` Vivek Gautam [this message]
2021-09-21 16:16 ` [PATCH RFC v1 10/11] uapi/virtio-iommu: Add a new request type to send page response Jean-Philippe Brucker
2021-09-30 9:24 ` Vivek Kumar Gautam
2021-10-06 9:55 ` Jean-Philippe Brucker
2021-04-23 9:51 ` [PATCH RFC v1 11/11] iommu/virtio: Add support " Vivek Gautam
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