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authorMichele Paolino <m.paolino@virtualopensystems.com>2023-11-14 18:07:09 +0100
committerMichele Paolino <m.paolino@virtualopensystems.com>2023-12-13 10:27:55 +0000
commitb05512b81bbe1c90b71da9c571e742f162fc0575 (patch)
treedea9b67ff4dae3e227943382dd7b0b0565dc39d1 /meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_dec.c
parent31d4011207be008333c1945f18bb922b13816462 (diff)
CAN, GPIO, RNG vhost-devices for virtio-loopback [v6]quillback_16.92.0quillback/16.92.016.92.0
This patch adds key components of the viritio-loopback architecture: - kernel-module-virtio-loopback: the virtio loopback kernel driver - CAN, GPIO and RNG vhost-user devices from meta-virtualization (commit a215d8320edee0a317a6511e7e2efa5bba867486) Notes: - libgpiod, comes from meta-openembedded commit 3029554ceb0b0bb52a8d8ec3f0a75c5113662fe6 - cleaned eg-virt from unused drivers (kernel-module-virtio-video) Bug-AGL: SPEC-4834 V2 changes: - related meta-virtualization commit message added in the cover letter - updated libgpio recipe to v2.1 - SPEC reference added in cover letter v3 - add vhost-device-can preliminary version. This is placed here with the objective to share the link when proposing the new device to the rust-vmm/vhost-device community - remove cargo-update-recipe-crates includes in bb file because it is not supported by the rust mixin layer - vhost-device folder README changes v4 - fixed libgpiod required version - tested ref hw and qemu x86/64 builds - vsock, scsi and i2c rust devices removed from the build as they are not yet integrated in virtiod-loopback - cleaned-up kernel modules kernel-module-virtio-video and gstreamer1.0-plugins-bad - virtio-loopback-driver set to 2-or-later v5 - Merge with Jan-Simon version v4: - remove broken kernel-module-virtio-video - use FEATURE_PACKAGES instead of IMAGE_INSTALL:append - rename virtio-loopback-driver.bb to kernel-module-virtio-loopback_git.bb for consistency v6 - adding version in the title - removing MODULE_GIT_REPOSITORY in kernel-modules Change-Id: Id6cc58e777b9edad03b6c50d0dddaac8601edeaf Signed-off-by: Michele Paolino <m.paolino@virtualopensystems.com> Signed-off-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Diffstat (limited to 'meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_dec.c')
-rw-r--r--meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_dec.c424
1 files changed, 0 insertions, 424 deletions
diff --git a/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_dec.c b/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_dec.c
deleted file mode 100644
index 301a9a16..00000000
--- a/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_dec.c
+++ /dev/null
@@ -1,424 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/* Decoder for virtio video device.
- *
- * Copyright 2020 OpenSynergy GmbH.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/version.h>
-#include <media/v4l2-event.h>
-#include <media/v4l2-ioctl.h>
-
-#include "virtio_video.h"
-
-static int virtio_video_dec_start_streaming(struct vb2_queue *vq,
- unsigned int count)
-{
- struct virtio_video_stream *stream = vb2_get_drv_priv(vq);
-
- if (virtio_video_state(stream) == STREAM_STATE_ERROR)
- return -EIO;
-
- if (!V4L2_TYPE_IS_OUTPUT(vq->type) &&
- virtio_video_state(stream) >= STREAM_STATE_INIT)
- virtio_video_state_update(stream, STREAM_STATE_RUNNING);
-
- return 0;
-}
-
-static void virtio_video_dec_stop_streaming(struct vb2_queue *vq)
-{
- int queue_type;
- struct virtio_video_stream *stream = vb2_get_drv_priv(vq);
-
- if (V4L2_TYPE_IS_OUTPUT(vq->type))
- queue_type = VIRTIO_VIDEO_QUEUE_TYPE_INPUT;
- else
- queue_type = VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT;
-
- virtio_video_queue_release_buffers(stream, queue_type);
- vb2_wait_for_all_buffers(vq);
-}
-
-static const struct vb2_ops virtio_video_dec_qops = {
- .queue_setup = virtio_video_queue_setup,
- .buf_init = virtio_video_buf_init,
- .buf_cleanup = virtio_video_buf_cleanup,
- .buf_queue = virtio_video_buf_queue,
- .start_streaming = virtio_video_dec_start_streaming,
- .stop_streaming = virtio_video_dec_stop_streaming,
- .wait_prepare = vb2_ops_wait_prepare,
- .wait_finish = vb2_ops_wait_finish,
-};
-
-static int virtio_video_dec_g_ctrl(struct v4l2_ctrl *ctrl)
-{
- int ret = 0;
- struct virtio_video_stream *stream = ctrl2stream(ctrl);
-
- if (virtio_video_state(stream) == STREAM_STATE_ERROR)
- return -EIO;
-
- switch (ctrl->id) {
- case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
- if (virtio_video_state(stream) >=
- STREAM_STATE_DYNAMIC_RES_CHANGE)
- ctrl->val = stream->out_info.min_buffers;
- else
- ctrl->val = 0;
- break;
- default:
- ret = -EINVAL;
- break;
- }
-
- return ret;
-}
-
-static const struct v4l2_ctrl_ops virtio_video_dec_ctrl_ops = {
- .g_volatile_ctrl = virtio_video_dec_g_ctrl,
-};
-
-int virtio_video_dec_init_ctrls(struct virtio_video_stream *stream)
-{
- struct v4l2_ctrl *ctrl;
-
- v4l2_ctrl_handler_init(&stream->ctrl_handler, 2);
-
- ctrl = v4l2_ctrl_new_std(&stream->ctrl_handler,
- &virtio_video_dec_ctrl_ops,
- V4L2_CID_MIN_BUFFERS_FOR_CAPTURE,
- MIN_BUFS_MIN, MIN_BUFS_MAX, MIN_BUFS_STEP,
- MIN_BUFS_DEF);
-
- if (ctrl)
- ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
-
- if (stream->ctrl_handler.error)
- return stream->ctrl_handler.error;
-
- (void)v4l2_ctrl_new_std(&stream->ctrl_handler, NULL,
- V4L2_CID_MIN_BUFFERS_FOR_OUTPUT,
- MIN_BUFS_MIN, MIN_BUFS_MAX, MIN_BUFS_STEP,
- stream->in_info.min_buffers);
-
- if (stream->ctrl_handler.error)
- return stream->ctrl_handler.error;
-
- v4l2_ctrl_handler_setup(&stream->ctrl_handler);
-
- return 0;
-}
-
-int virtio_video_dec_init_queues(void *priv, struct vb2_queue *src_vq,
- struct vb2_queue *dst_vq)
-{
- int ret;
- struct virtio_video_stream *stream = priv;
- struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev);
- struct device *dev = vvd->v4l2_dev.dev;
-
- src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
- src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
- src_vq->drv_priv = stream;
- src_vq->buf_struct_size = sizeof(struct virtio_video_buffer);
- src_vq->ops = &virtio_video_dec_qops;
- src_vq->mem_ops = virtio_video_mem_ops(vvd);
- src_vq->min_buffers_needed = stream->in_info.min_buffers;
- src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
- src_vq->lock = &stream->vq_mutex;
- src_vq->gfp_flags = virtio_video_gfp_flags(vvd);
- src_vq->dev = dev;
-
- ret = vb2_queue_init(src_vq);
- if (ret)
- return ret;
-
- dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
- dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
- dst_vq->drv_priv = stream;
- dst_vq->buf_struct_size = sizeof(struct virtio_video_buffer);
- dst_vq->ops = &virtio_video_dec_qops;
- dst_vq->mem_ops = virtio_video_mem_ops(vvd);
- dst_vq->min_buffers_needed = stream->out_info.min_buffers;
- dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
- dst_vq->lock = &stream->vq_mutex;
- dst_vq->gfp_flags = virtio_video_gfp_flags(vvd);
- dst_vq->dev = dev;
-
- return vb2_queue_init(dst_vq);
-}
-
-static int virtio_video_try_decoder_cmd(struct file *file, void *fh,
- struct v4l2_decoder_cmd *cmd)
-{
- struct virtio_video_stream *stream = file2stream(file);
- struct virtio_video_device *vvd = video_drvdata(file);
-
- if (virtio_video_state(stream) == STREAM_STATE_ERROR)
- return -EIO;
-
- if (virtio_video_state(stream) == STREAM_STATE_DRAIN)
- return -EBUSY;
-
- switch (cmd->cmd) {
- case V4L2_DEC_CMD_STOP:
- case V4L2_DEC_CMD_START:
- if (cmd->flags != 0) {
- v4l2_err(&vvd->v4l2_dev, "flags=%u are not supported",
- cmd->flags);
- return -EINVAL;
- }
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int virtio_video_decoder_cmd(struct file *file, void *fh,
- struct v4l2_decoder_cmd *cmd)
-{
- int ret;
- struct vb2_queue *src_vq, *dst_vq;
- struct virtio_video_stream *stream = file2stream(file);
- struct virtio_video_device *vvd = video_drvdata(file);
-
- ret = virtio_video_try_decoder_cmd(file, fh, cmd);
- if (ret < 0)
- return ret;
-
- dst_vq = v4l2_m2m_get_vq(stream->fh.m2m_ctx,
- V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
-
- switch (cmd->cmd) {
- case V4L2_DEC_CMD_START:
- vb2_clear_last_buffer_dequeued(dst_vq);
- break;
- case V4L2_DEC_CMD_STOP:
- src_vq = v4l2_m2m_get_vq(stream->fh.m2m_ctx,
- V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
-
- if (!vb2_is_streaming(src_vq)) {
- v4l2_dbg(1, vvd->debug,
- &vvd->v4l2_dev, "output is not streaming\n");
- return 0;
- }
-
- if (!vb2_is_streaming(dst_vq)) {
- v4l2_dbg(1, vvd->debug,
- &vvd->v4l2_dev, "capture is not streaming\n");
- return 0;
- }
-
- ret = virtio_video_cmd_stream_drain(vvd, stream->stream_id);
- if (ret) {
- v4l2_err(&vvd->v4l2_dev, "failed to drain stream\n");
- return ret;
- }
-
- virtio_video_state_update(stream, STREAM_STATE_DRAIN);
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int virtio_video_dec_enum_fmt_vid_cap(struct file *file, void *fh,
- struct v4l2_fmtdesc *f)
-{
- struct virtio_video_stream *stream = file2stream(file);
- struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev);
- struct video_format_info *info;
- struct video_format *fmt;
- unsigned long input_mask = 0;
- int idx = 0, bit_num = 0;
-
- if (virtio_video_state(stream) == STREAM_STATE_ERROR)
- return -EIO;
-
- if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
- return -EINVAL;
-
- if (f->index >= vvd->num_output_fmts)
- return -EINVAL;
-
- info = &stream->in_info;
- list_for_each_entry(fmt, &vvd->input_fmt_list, formats_list_entry) {
- if (info->fourcc_format == fmt->desc.format) {
- input_mask = fmt->desc.mask;
- break;
- }
- }
-
- if (input_mask == 0)
- return -EINVAL;
-
- list_for_each_entry(fmt, &vvd->output_fmt_list, formats_list_entry) {
- if (test_bit(bit_num, &input_mask)) {
- if (f->index == idx) {
- f->pixelformat = fmt->desc.format;
- return 0;
- }
- idx++;
- }
- bit_num++;
- }
- return -EINVAL;
-}
-
-
-int virtio_video_dec_enum_fmt_vid_out(struct file *file, void *fh,
- struct v4l2_fmtdesc *f)
-{
- struct virtio_video_stream *stream = file2stream(file);
- struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev);
- struct video_format *fmt;
- int idx = 0;
-
- if (virtio_video_state(stream) == STREAM_STATE_ERROR)
- return -EIO;
-
- if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
- return -EINVAL;
-
- if (f->index >= vvd->num_input_fmts)
- return -EINVAL;
-
- list_for_each_entry(fmt, &vvd->input_fmt_list, formats_list_entry) {
- if (f->index == idx) {
- f->pixelformat = fmt->desc.format;
- return 0;
- }
- idx++;
- }
- return -EINVAL;
-}
-
-static int virtio_video_dec_s_fmt(struct file *file, void *fh,
- struct v4l2_format *f)
-{
- int ret;
- struct virtio_video_stream *stream = file2stream(file);
-
- ret = virtio_video_s_fmt(file, fh, f);
- if (ret)
- return ret;
-
- if (V4L2_TYPE_IS_OUTPUT(f->type)) {
- if (virtio_video_state(stream) == STREAM_STATE_IDLE)
- virtio_video_state_update(stream, STREAM_STATE_INIT);
- }
-
- return 0;
-}
-
-static int virtio_video_dec_s_selection(struct file *file, void *fh,
- struct v4l2_selection *sel)
-{
- struct virtio_video_stream *stream = file2stream(file);
- struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev);
- int ret;
-
- if (V4L2_TYPE_IS_OUTPUT(sel->type))
- return -EINVAL;
-
- switch (sel->target) {
- case V4L2_SEL_TGT_COMPOSE:
- stream->out_info.crop.top = sel->r.top;
- stream->out_info.crop.left = sel->r.left;
- stream->out_info.crop.width = sel->r.width;
- stream->out_info.crop.height = sel->r.height;
- break;
- default:
- return -EINVAL;
- }
-
- ret = virtio_video_cmd_set_params(vvd, stream, &stream->out_info,
- VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT);
- if (ret)
- return -EINVAL;
-
- return virtio_video_cmd_get_params(vvd, stream,
- VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT);
-}
-
-static const struct v4l2_ioctl_ops virtio_video_dec_ioctl_ops = {
- .vidioc_querycap = virtio_video_querycap,
-
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 3, 0))
- .vidioc_enum_fmt_vid_cap = virtio_video_dec_enum_fmt_vid_cap,
- .vidioc_enum_fmt_vid_out = virtio_video_dec_enum_fmt_vid_out,
-#else
- .vidioc_enum_fmt_vid_cap_mplane = virtio_video_dec_enum_fmt_vid_cap,
- .vidioc_enum_fmt_vid_out_mplane = virtio_video_dec_enum_fmt_vid_out,
-#endif
- .vidioc_g_fmt_vid_cap_mplane = virtio_video_g_fmt,
- .vidioc_s_fmt_vid_cap_mplane = virtio_video_dec_s_fmt,
-
- .vidioc_g_fmt_vid_out_mplane = virtio_video_g_fmt,
- .vidioc_s_fmt_vid_out_mplane = virtio_video_dec_s_fmt,
-
- .vidioc_g_selection = virtio_video_g_selection,
- .vidioc_s_selection = virtio_video_dec_s_selection,
-
- .vidioc_try_decoder_cmd = virtio_video_try_decoder_cmd,
- .vidioc_decoder_cmd = virtio_video_decoder_cmd,
- .vidioc_enum_frameintervals = virtio_video_enum_framemintervals,
- .vidioc_enum_framesizes = virtio_video_enum_framesizes,
-
- .vidioc_reqbufs = virtio_video_reqbufs,
- .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
- .vidioc_qbuf = virtio_video_qbuf,
- .vidioc_dqbuf = virtio_video_dqbuf,
- .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
- .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
- .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
-
- .vidioc_streamon = v4l2_m2m_ioctl_streamon,
- .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
-
- .vidioc_subscribe_event = virtio_video_subscribe_event,
- .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
-};
-
-void *virtio_video_dec_get_fmt_list(struct virtio_video_device *vvd)
-{
- return &vvd->input_fmt_list;
-}
-
-static struct virtio_video_device_ops virtio_video_dec_ops = {
- .init_ctrls = virtio_video_dec_init_ctrls,
- .init_queues = virtio_video_dec_init_queues,
- .get_fmt_list = virtio_video_dec_get_fmt_list,
-};
-
-int virtio_video_dec_init(struct virtio_video_device *vvd)
-{
- ssize_t num;
- struct video_device *vd = &vvd->video_dev;
-
- vd->ioctl_ops = &virtio_video_dec_ioctl_ops;
- vvd->ops = &virtio_video_dec_ops;
-
- num = strscpy(vd->name, "stateful-decoder", sizeof(vd->name));
- if (num < 0)
- return num;
-
- return 0;
-}