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Thu, 9 Jan 2020 14:43:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1578581039; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=TrG2D7PGes+Tk9KPVWW7GanYjnyyioK1Zu85/7Dy2Ys=; b=BRsfdVMvTD+Q2ipxa8+v2uPQQ0cCPtaV1oZPDcD3bo83823qEmXdVVCVdUXmM0JOEzYcVJ 4QNy5UWiNN3wG+1d2/2cNV/D5mP70yQvWLTtsYSMiFVw1x0wSpMS5BCAyG+k81j7FXrhWP jhqYouop8RxCyCPljb/qTUsJvh1uZXY= From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, jean-philippe@linaro.org, dgilbert@redhat.com, quintela@redhat.com, mst@redhat.com, peterx@redhat.com Subject: [PATCH v12 03/13] virtio-iommu: Decode the command payload Date: Thu, 9 Jan 2020 15:43:09 +0100 Message-Id: <20200109144319.15912-4-eric.auger@redhat.com> In-Reply-To: <20200109144319.15912-1-eric.auger@redhat.com> References: <20200109144319.15912-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-MC-Unique: kSR_DaZyNKqGgozK4YSneQ-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kevin.tian@intel.com, bharatb.linux@gmail.com, tnowicki@marvell.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" This patch adds the command payload decoding and introduces the functions that will do the actual command handling. Those functions are not yet implemented. Signed-off-by: Eric Auger Reviewed-by: Jean-Philippe Brucker Reviewed-by: Peter Xu --- v11 -> v12: - ADded Jean and Peter's R-b v10 -> v11: - use a macro for handle command functions v9 -> v10: - make virtio_iommu_handle_* more compact and remove get_payload_size v7 -> v8: - handle new domain parameter in detach - remove reserved checks v5 -> v6: - change map/unmap semantics (remove size) v4 -> v5: - adopt new v0.5 terminology v3 -> v4: - no flags field anymore in struct virtio_iommu_req_unmap - test reserved on attach/detach, change trace proto - rebase on v2.10.0. --- hw/virtio/trace-events | 4 +++ hw/virtio/virtio-iommu.c | 76 +++++++++++++++++++++++++++++++++------- 2 files changed, 68 insertions(+), 12 deletions(-) diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 02d93d7f63..f7141aa2f6 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -60,3 +60,7 @@ virtio_iommu_get_features(uint64_t features) "device supp= orts features=3D0x%"PRIx6 virtio_iommu_device_status(uint8_t status) "driver status =3D %d" virtio_iommu_get_config(uint64_t page_size_mask, uint64_t start, uint64_t = end, uint32_t domain_range, uint32_t probe_size) "page_size_mask=3D0x%"PRIx= 64" start=3D0x%"PRIx64" end=3D0x%"PRIx64" domain_range=3D%d probe_size=3D0x= %x" virtio_iommu_set_config(uint64_t page_size_mask, uint64_t start, uint64_t = end, uint32_t domain_range, uint32_t probe_size) "page_size_mask=3D0x%"PRIx= 64" start=3D0x%"PRIx64" end=3D0x%"PRIx64" domain_bits=3D%d probe_size=3D0x%= x" +virtio_iommu_attach(uint32_t domain_id, uint32_t ep_id) "domain=3D%d endpo= int=3D%d" +virtio_iommu_detach(uint32_t domain_id, uint32_t ep_id) "domain=3D%d endpo= int=3D%d" +virtio_iommu_map(uint32_t domain_id, uint64_t virt_start, uint64_t virt_en= d, uint64_t phys_start, uint32_t flags) "domain=3D%d virt_start=3D0x%"PRIx6= 4" virt_end=3D0x%"PRIx64 " phys_start=3D0x%"PRIx64" flags=3D%d" +virtio_iommu_unmap(uint32_t domain_id, uint64_t virt_start, uint64_t virt_= end) "domain=3D%d virt_start=3D0x%"PRIx64" virt_end=3D0x%"PRIx64 diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 7e55eda67e..9d1b997df7 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -34,31 +34,83 @@ /* Max size */ #define VIOMMU_DEFAULT_QUEUE_SIZE 256 =20 -static int virtio_iommu_handle_attach(VirtIOIOMMU *s, - struct iovec *iov, - unsigned int iov_cnt) +static int virtio_iommu_attach(VirtIOIOMMU *s, + struct virtio_iommu_req_attach *req) { + uint32_t domain_id =3D le32_to_cpu(req->domain); + uint32_t ep_id =3D le32_to_cpu(req->endpoint); + + trace_virtio_iommu_attach(domain_id, ep_id); + return VIRTIO_IOMMU_S_UNSUPP; } -static int virtio_iommu_handle_detach(VirtIOIOMMU *s, - struct iovec *iov, - unsigned int iov_cnt) + +static int virtio_iommu_detach(VirtIOIOMMU *s, + struct virtio_iommu_req_detach *req) { + uint32_t domain_id =3D le32_to_cpu(req->domain); + uint32_t ep_id =3D le32_to_cpu(req->endpoint); + + trace_virtio_iommu_detach(domain_id, ep_id); + return VIRTIO_IOMMU_S_UNSUPP; } -static int virtio_iommu_handle_map(VirtIOIOMMU *s, - struct iovec *iov, - unsigned int iov_cnt) + +static int virtio_iommu_map(VirtIOIOMMU *s, + struct virtio_iommu_req_map *req) { + uint32_t domain_id =3D le32_to_cpu(req->domain); + uint64_t phys_start =3D le64_to_cpu(req->phys_start); + uint64_t virt_start =3D le64_to_cpu(req->virt_start); + uint64_t virt_end =3D le64_to_cpu(req->virt_end); + uint32_t flags =3D le32_to_cpu(req->flags); + + trace_virtio_iommu_map(domain_id, virt_start, virt_end, phys_start, fl= ags); + return VIRTIO_IOMMU_S_UNSUPP; } -static int virtio_iommu_handle_unmap(VirtIOIOMMU *s, - struct iovec *iov, - unsigned int iov_cnt) + +static int virtio_iommu_unmap(VirtIOIOMMU *s, + struct virtio_iommu_req_unmap *req) { + uint32_t domain_id =3D le32_to_cpu(req->domain); + uint64_t virt_start =3D le64_to_cpu(req->virt_start); + uint64_t virt_end =3D le64_to_cpu(req->virt_end); + + trace_virtio_iommu_unmap(domain_id, virt_start, virt_end); + return VIRTIO_IOMMU_S_UNSUPP; } =20 +static int virtio_iommu_iov_to_req(struct iovec *iov, + unsigned int iov_cnt, + void *req, size_t req_sz) +{ + size_t sz, payload_sz =3D req_sz - sizeof(struct virtio_iommu_req_tail= ); + + sz =3D iov_to_buf(iov, iov_cnt, 0, req, payload_sz); + if (unlikely(sz !=3D payload_sz)) { + return VIRTIO_IOMMU_S_INVAL; + } + return 0; +} + +#define virtio_iommu_handle_req(__req) \ +static int virtio_iommu_handle_ ## __req(VirtIOIOMMU *s, \ + struct iovec *iov, \ + unsigned int iov_cnt) \ +{ \ + struct virtio_iommu_req_ ## __req req; \ + int ret =3D virtio_iommu_iov_to_req(iov, iov_cnt, &req, sizeof(req)); \ + \ + return ret ? ret : virtio_iommu_ ## __req(s, &req); \ +} + +virtio_iommu_handle_req(attach) +virtio_iommu_handle_req(detach) +virtio_iommu_handle_req(map) +virtio_iommu_handle_req(unmap) + static void virtio_iommu_handle_command(VirtIODevice *vdev, VirtQueue *vq) { VirtIOIOMMU *s =3D VIRTIO_IOMMU(vdev); --=20 2.20.1