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author | Eric Auger <eric.auger@redhat.com> | 2020-02-14 14:27:37 +0100 |
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committer | Michael S. Tsirkin <mst@redhat.com> | 2020-02-27 03:46:10 -0500 |
commit | 5442b854eaf921588e24d5711640ab71e59cb1b8 (patch) | |
tree | c93142338e72b53b97509ceec549af4ca72e4dd9 | |
parent | 22c37a10f3e1de1b19aa8281bc368d8cea960f4c (diff) | |
download | qemu-5442b854eaf921588e24d5711640ab71e59cb1b8.zip qemu-5442b854eaf921588e24d5711640ab71e59cb1b8.tar.gz qemu-5442b854eaf921588e24d5711640ab71e59cb1b8.tar.bz2 |
virtio-iommu: Decode the command payload
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 <eric.auger@redhat.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20200214132745.23392-3-eric.auger@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-rw-r--r-- | hw/virtio/trace-events | 4 | ||||
-rw-r--r-- | 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 02d93d7..f7141aa 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -60,3 +60,7 @@ virtio_iommu_get_features(uint64_t features) "device supports features=0x%"PRIx6 virtio_iommu_device_status(uint8_t status) "driver status = %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=0x%"PRIx64" start=0x%"PRIx64" end=0x%"PRIx64" domain_range=%d probe_size=0x%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=0x%"PRIx64" start=0x%"PRIx64" end=0x%"PRIx64" domain_bits=%d probe_size=0x%x" +virtio_iommu_attach(uint32_t domain_id, uint32_t ep_id) "domain=%d endpoint=%d" +virtio_iommu_detach(uint32_t domain_id, uint32_t ep_id) "domain=%d endpoint=%d" +virtio_iommu_map(uint32_t domain_id, uint64_t virt_start, uint64_t virt_end, uint64_t phys_start, uint32_t flags) "domain=%d virt_start=0x%"PRIx64" virt_end=0x%"PRIx64 " phys_start=0x%"PRIx64" flags=%d" +virtio_iommu_unmap(uint32_t domain_id, uint64_t virt_start, uint64_t virt_end) "domain=%d virt_start=0x%"PRIx64" virt_end=0x%"PRIx64 diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 3057926..86dcdc0 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 -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 = le32_to_cpu(req->domain); + uint32_t ep_id = 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 = le32_to_cpu(req->domain); + uint32_t ep_id = 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 = le32_to_cpu(req->domain); + uint64_t phys_start = le64_to_cpu(req->phys_start); + uint64_t virt_start = le64_to_cpu(req->virt_start); + uint64_t virt_end = le64_to_cpu(req->virt_end); + uint32_t flags = le32_to_cpu(req->flags); + + trace_virtio_iommu_map(domain_id, virt_start, virt_end, phys_start, flags); + 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 = le32_to_cpu(req->domain); + uint64_t virt_start = le64_to_cpu(req->virt_start); + uint64_t virt_end = le64_to_cpu(req->virt_end); + + trace_virtio_iommu_unmap(domain_id, virt_start, virt_end); + return VIRTIO_IOMMU_S_UNSUPP; } +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 = req_sz - sizeof(struct virtio_iommu_req_tail); + + sz = iov_to_buf(iov, iov_cnt, 0, req, payload_sz); + if (unlikely(sz != 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 = 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 = VIRTIO_IOMMU(vdev); |