search for: vr_idx

...struct mic_copy *copy = &request.copy; > + > + ret = mic_vdev_inited(mvdev); > + if (ret) > + return ret; > + > + if (copy_from_user(&request, argp, sizeof(request))) > + return -EFAULT; > + > + dev_dbg(mic_dev(mvdev), > + "%s %d === iovcnt 0x%x vr_idx 0x%x desc_idx 0x%x " > + "used_idx 0x%x used_len 0x%x\n", > + __func__, __LINE__, copy->iovcnt, > + copy->vr_idx, copy->desc_idx, > + request.used_desc_idx, request.used_len); > + > + ret = mic_virtio_copy_desc(mvdev, &request); > + if (ret...

...COPY_DESC: + { + struct mic_copy_desc request; + struct mic_copy *copy = &request.copy; + + ret = mic_vdev_inited(mvdev); + if (ret) + return ret; + + if (copy_from_user(&request, argp, sizeof(request))) + return -EFAULT; + + dev_dbg(mic_dev(mvdev), + "%s %d === iovcnt 0x%x vr_idx 0x%x desc_idx 0x%x " + "used_idx 0x%x used_len 0x%x\n", + __func__, __LINE__, copy->iovcnt, + copy->vr_idx, copy->desc_idx, + request.used_desc_idx, request.used_len); + + ret = mic_virtio_copy_desc(mvdev, &request); + if (ret < 0) { + dev_err(mic_dev(mvde...

...COPY_DESC: + { + struct mic_copy_desc request; + struct mic_copy *copy = &request.copy; + + ret = mic_vdev_inited(mvdev); + if (ret) + return ret; + + if (copy_from_user(&request, argp, sizeof(request))) + return -EFAULT; + + dev_dbg(mic_dev(mvdev), + "%s %d === iovcnt 0x%x vr_idx 0x%x desc_idx 0x%x " + "used_idx 0x%x used_len 0x%x\n", + __func__, __LINE__, copy->iovcnt, + copy->vr_idx, copy->desc_idx, + request.used_desc_idx, request.used_len); + + ret = mic_virtio_copy_desc(mvdev, &request); + if (ret < 0) { + dev_err(mic_dev(mvde...

An Intel MIC X100 device is a PCIe form factor add-in coprocessor card based on the Intel Many Integrated Core (MIC) architecture that runs a Linux OS. It is a PCIe endpoint in a platform and therefore implements the three required standard address spaces i.e. configuration, memory and I/O. The host OS loads a device driver as is typical for PCIe devices. The card itself runs a bootstrap after

An Intel MIC X100 device is a PCIe form factor add-in coprocessor card based on the Intel Many Integrated Core (MIC) architecture that runs a Linux OS. It is a PCIe endpoint in a platform and therefore implements the three required standard address spaces i.e. configuration, memory and I/O. The host OS loads a device driver as is typical for PCIe devices. The card itself runs a bootstrap after

...gt; + > +static inline __u16 read_avail_idx(struct mic_vring *vr) > +{ > + return ACCESS_ONCE(vr->info->avail_idx); > +} > + > +static inline void txrx_prepare(int type, bool tx, struct mic_vring *vr, > + struct mic_copy_desc *copy, ssize_t len) > +{ > + copy->vr_idx = tx ? 0 : 1; > + copy->update_used = true; > + if (type == VIRTIO_ID_NET) > + copy->iov[1].iov_len = len - sizeof(struct virtio_net_hdr); > + else > + copy->iov[0].iov_len = len; > +} > + > +/* Central API which triggers the copies */ > +static int > +mic_v...

...gt; + > +static inline __u16 read_avail_idx(struct mic_vring *vr) > +{ > + return ACCESS_ONCE(vr->info->avail_idx); > +} > + > +static inline void txrx_prepare(int type, bool tx, struct mic_vring *vr, > + struct mic_copy_desc *copy, ssize_t len) > +{ > + copy->vr_idx = tx ? 0 : 1; > + copy->update_used = true; > + if (type == VIRTIO_ID_NET) > + copy->iov[1].iov_len = len - sizeof(struct virtio_net_hdr); > + else > + copy->iov[0].iov_len = len; > +} > + > +/* Central API which triggers the copies */ > +static int > +mic_v...

...gt;iov[i].iov_base, copy->iov[i].iov_len); +} + +static inline __u16 read_avail_idx(struct mic_vring *vr) +{ + return ACCESS_ONCE(vr->info->avail_idx); +} + +static inline void txrx_prepare(int type, bool tx, struct mic_vring *vr, + struct mic_copy_desc *copy, ssize_t len) +{ + copy->vr_idx = tx ? 0 : 1; + copy->update_used = true; + if (type == VIRTIO_ID_NET) + copy->iov[1].iov_len = len - sizeof(struct virtio_net_hdr); + else + copy->iov[0].iov_len = len; +} + +/* Central API which triggers the copies */ +static int +mic_virtio_copy(struct mic_info *mic, int fd, + struct...

...mlxbf_tmfifo_release_desc(struct mlxbf_tmfifo_vring *vring, struct vring_desc *desc, u32 len) { - const struct vring *vr = virtqueue_get_vring(vring->vq); + const struct vring_s *vr = virtqueue_get_vring(vring->vq); struct virtio_device *vdev = vring->vq->vdev; u16 idx, vr_idx; @@ -330,7 +330,7 @@ static void mlxbf_tmfifo_release_desc(struct mlxbf_tmfifo_vring *vring, static u32 mlxbf_tmfifo_get_pkt_len(struct mlxbf_tmfifo_vring *vring, struct vring_desc *desc) { - const struct vring *vr = virtqueue_get_vring(vring->vq); + const struct vring_s *vr = virtq...

...mlxbf_tmfifo_release_desc(struct mlxbf_tmfifo_vring *vring, struct vring_desc *desc, u32 len) { - const struct vring *vr = virtqueue_get_vring(vring->vq); + const struct vring_s *vr = virtqueue_get_vring(vring->vq); struct virtio_device *vdev = vring->vq->vdev; u16 idx, vr_idx; @@ -330,7 +330,7 @@ static void mlxbf_tmfifo_release_desc(struct mlxbf_tmfifo_vring *vring, static u32 mlxbf_tmfifo_get_pkt_len(struct mlxbf_tmfifo_vring *vring, struct vring_desc *desc) { - const struct vring *vr = virtqueue_get_vring(vring->vq); + const struct vring_s *vr = virtq...

ChangeLog: ========= v1 => v2: a) License wording cleanup, sysfs ABI documentation, patch 1 refactoring into 3 smaller patches and function renames, as per feedback from Greg Kroah-Hartman. b) Use VRINGH infrastructure for accessing virtio rings from the host in patch 5, as per feedback from Michael S. Tsirkin. v1: Initial post @ https://lkml.org/lkml/2013/7/24/810 Description:

ChangeLog: ========= v1 => v2: a) License wording cleanup, sysfs ABI documentation, patch 1 refactoring into 3 smaller patches and function renames, as per feedback from Greg Kroah-Hartman. b) Use VRINGH infrastructure for accessing virtio rings from the host in patch 5, as per feedback from Michael S. Tsirkin. v1: Initial post @ https://lkml.org/lkml/2013/7/24/810 Description:

ChangeLog: ========= v2 => v3: a) Patch 1 data structure cleanups, header file include cleanups, IDA interface reuse and switching to device_create_with_groups(..) as per feedback from Greg Kroah-Hartman. b) Patch 7 signal documentation, sleep workaround removal and sysfs access API cleanups as per feedback from Michael S. Tsirkin. v1 => v2: @ http://lwn.net/Articles/563131/ a)

ChangeLog: ========= v2 => v3: a) Patch 1 data structure cleanups, header file include cleanups, IDA interface reuse and switching to device_create_with_groups(..) as per feedback from Greg Kroah-Hartman. b) Patch 7 signal documentation, sleep workaround removal and sysfs access API cleanups as per feedback from Michael S. Tsirkin. v1 => v2: @ http://lwn.net/Articles/563131/ a)

ChangeLog: ========= v2 => v3: a) Patch 1 data structure cleanups, header file include cleanups, IDA interface reuse and switching to device_create_with_groups(..) as per feedback from Greg Kroah-Hartman. b) Patch 7 signal documentation, sleep workaround removal and sysfs access API cleanups as per feedback from Michael S. Tsirkin. v1 => v2: @ http://lwn.net/Articles/563131/ a)

ChangeLog: ========= v2 => v3: a) Patch 1 data structure cleanups, header file include cleanups, IDA interface reuse and switching to device_create_with_groups(..) as per feedback from Greg Kroah-Hartman. b) Patch 7 signal documentation, sleep workaround removal and sysfs access API cleanups as per feedback from Michael S. Tsirkin. v1 => v2: @ http://lwn.net/Articles/563131/ a)