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>

1 files changed, 0 insertions, 446 deletions

diff --git a/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video.h b/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video.h
deleted file mode 100644
index 9ece57db..00000000
--- a/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video.h
+++ /dev/null
@@ -1,446 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+ */
-/* Common header for virtio video driver.
- *
- * 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/>.
- */
-
-#ifndef _VIRTIO_VIDEO_H
-#define _VIRTIO_VIDEO_H
-
-#include <linux/virtio.h>
-#include <linux/virtio_ids.h>
-#include <linux/virtio_config.h>
-#include <linux/virtio_video.h>
-#include <linux/list.h>
-#include <linux/completion.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-mem2mem.h>
-#include <media/v4l2-ctrls.h>
-#include <media/videobuf2-dma-sg.h>
-#include <media/videobuf2-dma-contig.h>
-
-#define DRIVER_NAME "virtio-video"
-
-#define VIRTIO_ID_VIDEO_DEC 31
-#define VIRTIO_ID_VIDEO_ENC 30
-#define VIRTIO_ID_VIDEO_CAM 100
-
-#define MIN_BUFS_MIN 0
-#define MIN_BUFS_MAX VIDEO_MAX_FRAME
-#define MIN_BUFS_STEP 1
-#define MIN_BUFS_DEF 1
-
-struct video_format_frame {
-	struct virtio_video_format_frame frame;
-	struct virtio_video_format_range *frame_rates;
-};
-
-struct video_format {
-	struct list_head formats_list_entry;
-	struct virtio_video_format_desc desc;
-	struct video_format_frame *frames;
-};
-
-struct video_control_fmt_data {
-	uint32_t min;
-	uint32_t max;
-	uint32_t num;
-	uint32_t skip_mask;
-	uint32_t *entries;
-};
-
-struct video_control_format {
-	struct list_head controls_list_entry;
-	uint32_t format;
-	struct video_control_fmt_data *profile;
-	struct video_control_fmt_data *level;
-};
-
-struct video_plane_format {
-	uint32_t plane_size;
-	uint32_t stride;
-};
-
-struct video_format_info {
-	uint32_t fourcc_format;
-	uint32_t frame_rate;
-	uint32_t frame_width;
-	uint32_t frame_height;
-	uint32_t min_buffers;
-	uint32_t max_buffers;
-	struct virtio_video_crop crop;
-	uint32_t num_planes;
-	struct video_plane_format plane_format[VIRTIO_VIDEO_MAX_PLANES];
-};
-
-struct video_control_info {
-	uint32_t profile;
-	uint32_t level;
-	uint32_t bitrate;
-};
-
-struct virtio_video_device;
-struct virtio_video_vbuffer;
-
-typedef void (*virtio_video_resp_cb)(struct virtio_video_device *vvd,
-				     struct virtio_video_vbuffer *vbuf);
-
-struct virtio_video_vbuffer {
-	char *buf;
-	int size;
-	uint32_t id;
-
-	void *data_buf;
-	uint32_t data_size;
-
-	char *resp_buf;
-	int resp_size;
-
-	void *priv;
-	virtio_video_resp_cb resp_cb;
-
-	bool is_sync;
-	struct completion reclaimed;
-
-	struct list_head pending_list_entry;
-};
-
-struct virtio_video_cmd_queue {
-	struct virtqueue *vq;
-	bool ready;
-	spinlock_t qlock;
-	wait_queue_head_t reclaim_queue;
-};
-
-struct virtio_video_event_queue {
-	struct virtqueue *vq;
-	bool ready;
-	struct work_struct work;
-};
-
-enum video_stream_state {
-	STREAM_STATE_IDLE = 0,
-	STREAM_STATE_INIT,
-	STREAM_STATE_DYNAMIC_RES_CHANGE, /* specific to decoder */
-	STREAM_STATE_RUNNING,
-	STREAM_STATE_DRAIN,
-	STREAM_STATE_STOPPED,
-	STREAM_STATE_RESET, /* specific to encoder */
-	STREAM_STATE_ERROR,
-};
-
-struct virtio_video_stream {
-	uint32_t stream_id;
-	atomic_t state;
-	struct video_device *video_dev;
-	struct v4l2_fh fh;
-	struct mutex vq_mutex;
-	struct v4l2_ctrl_handler ctrl_handler;
-	struct video_format_info in_info;
-	struct video_format_info out_info;
-	struct video_control_info control;
-	struct video_format_frame *current_frame;
-};
-
-struct virtio_video_device {
-	struct virtio_device *vdev;
-	struct virtio_video_cmd_queue commandq;
-	struct virtio_video_event_queue eventq;
-	wait_queue_head_t wq;
-
-	struct kmem_cache *vbufs;
-	struct virtio_video_event *evts;
-
-	struct idr resource_idr;
-	spinlock_t resource_idr_lock;
-	struct idr stream_idr;
-	spinlock_t stream_idr_lock;
-
-	uint32_t max_caps_len;
-	uint32_t max_resp_len;
-
-	bool has_iommu;
-	bool supp_non_contig;
-
-	int debug;
-	int use_dma_mem;
-
-	struct v4l2_device v4l2_dev;
-	struct video_device video_dev;
-	struct mutex video_dev_mutex;
-
-	bool is_m2m_dev;
-	struct v4l2_m2m_dev *m2m_dev;
-
-	/* non-m2m queue (camera) */
-	struct vb2_queue vb2_output_queue;
-	struct list_head pending_buf_list;
-	spinlock_t pending_buf_list_lock;
-
-	uint32_t vbufs_sent;
-	struct list_head pending_vbuf_list;
-
-	/* device_busy - to block multiple opens for non-m2m (camera) */
-	bool device_busy;
-
-	/* vid_dev_nr - try register starting at video device number */
-	int vid_dev_nr;
-
-	/* is_mplane_cam - camera has multiplanar capabilities (default true) */
-	bool is_mplane_cam;
-
-	/* VIRTIO_VIDEO_FUNC_ */
-	uint32_t type;
-
-	uint32_t num_input_fmts;
-	struct list_head input_fmt_list;
-
-	uint32_t num_output_fmts;
-	struct list_head output_fmt_list;
-
-	struct list_head controls_fmt_list;
-	struct virtio_video_device_ops *ops;
-};
-
-struct virtio_video_device_ops {
-	int (*init_ctrls)(struct virtio_video_stream *stream);
-	int (*init_queues)(void *priv, struct vb2_queue *src_vq,
-			   struct vb2_queue *dst_vq);
-	void* (*get_fmt_list)(struct virtio_video_device *vvd);
-};
-
-struct virtio_video_buffer {
-	struct v4l2_m2m_buffer v4l2_m2m_vb;
-	uint32_t resource_id;
-	bool queued;
-	struct list_head list;
-};
-
-static inline gfp_t
-virtio_video_gfp_flags(struct virtio_video_device *vvd)
-{
-	if (vvd->use_dma_mem)
-		return GFP_DMA;
-	else
-		return 0;
-}
-
-static inline const struct vb2_mem_ops *
-virtio_video_mem_ops(struct virtio_video_device *vvd)
-{
-	if (vvd->supp_non_contig)
-		return &vb2_dma_sg_memops;
-	else
-		return &vb2_dma_contig_memops;
-}
-
-static inline struct virtio_video_device *
-to_virtio_vd(struct video_device *video_dev)
-{
-	return container_of(video_dev, struct virtio_video_device,
-			 video_dev);
-}
-
-static inline struct virtio_video_stream *file2stream(struct file *file)
-{
-	return container_of(file->private_data, struct virtio_video_stream, fh);
-}
-
-static inline struct virtio_video_stream *ctrl2stream(struct v4l2_ctrl *ctrl)
-{
-	return container_of(ctrl->handler, struct virtio_video_stream,
-			    ctrl_handler);
-}
-
-static inline struct virtio_video_buffer *to_virtio_vb(struct vb2_buffer *vb)
-{
-	struct vb2_v4l2_buffer *v4l2_vb = to_vb2_v4l2_buffer(vb);
-
-	return container_of(v4l2_vb, struct virtio_video_buffer,
-			    v4l2_m2m_vb.vb);
-}
-
-static inline enum virtio_video_queue_type
-to_virtio_queue_type(enum v4l2_buf_type type)
-{
-	if (V4L2_TYPE_IS_OUTPUT(type))
-		return VIRTIO_VIDEO_QUEUE_TYPE_INPUT;
-	else
-		return VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT;
-}
-
-static inline bool within_range(uint32_t min, uint32_t val, uint32_t max)
-{
-	return ((min <= val) && (val <= max));
-}
-
-static inline bool needs_alignment(uint32_t val, uint32_t a)
-{
-	if (a == 0 || IS_ALIGNED(val, a))
-		return false;
-
-	return true;
-}
-
-enum video_stream_state virtio_video_state(struct virtio_video_stream *stream);
-void virtio_video_state_reset(struct virtio_video_stream *stream);
-void virtio_video_state_update(struct virtio_video_stream *stream,
-			       enum video_stream_state new_state);
-
-int virtio_video_alloc_vbufs(struct virtio_video_device *vvd);
-void virtio_video_free_vbufs(struct virtio_video_device *vvd);
-int virtio_video_alloc_events(struct virtio_video_device *vvd);
-
-int virtio_video_device_init(struct virtio_video_device *vvd);
-void virtio_video_device_deinit(struct virtio_video_device *vvd);
-
-int virtio_video_dec_init(struct virtio_video_device *vvd);
-int virtio_video_enc_init(struct virtio_video_device *vvd);
-int virtio_video_cam_init(struct virtio_video_device *vvd);
-
-void virtio_video_stream_id_get(struct virtio_video_device *vvd,
-				struct virtio_video_stream *stream,
-				uint32_t *id);
-void virtio_video_stream_id_put(struct virtio_video_device *vvd, uint32_t id);
-void virtio_video_resource_id_get(struct virtio_video_device *vvd,
-				  uint32_t *id);
-void virtio_video_resource_id_put(struct virtio_video_device *vvd, uint32_t id);
-
-int virtio_video_cmd_stream_create(struct virtio_video_device *vvd,
-				   uint32_t stream_id,
-				   enum virtio_video_format format,
-				   const char *tag);
-int virtio_video_cmd_stream_destroy(struct virtio_video_device *vvd,
-				    uint32_t stream_id);
-int virtio_video_cmd_stream_drain(struct virtio_video_device *vvd,
-				  uint32_t stream_id);
-int virtio_video_cmd_resource_attach(struct virtio_video_device *vvd,
-				     uint32_t stream_id, uint32_t resource_id,
-				     enum virtio_video_queue_type queue_type,
-				     void *buf, size_t buf_size);
-int virtio_video_cmd_resource_queue(struct virtio_video_device *vvd,
-				    uint32_t stream_id,
-				    struct virtio_video_buffer *virtio_vb,
-				    uint32_t data_size[], uint8_t num_data_size,
-				    enum virtio_video_queue_type queue_type);
-int virtio_video_cmd_queue_detach_resources(struct virtio_video_device *vvd,
-				struct virtio_video_stream *stream,
-				enum virtio_video_queue_type queue_type);
-int virtio_video_cmd_queue_clear(struct virtio_video_device *vvd,
-				 struct virtio_video_stream *stream,
-				 enum virtio_video_queue_type queue_type);
-int virtio_video_cmd_query_capability(struct virtio_video_device *vvd,
-				      void *resp_buf, size_t resp_size,
-				      enum virtio_video_queue_type queue_type);
-int virtio_video_query_control_profile(struct virtio_video_device *vvd,
-				       void *resp_buf, size_t resp_size,
-				       enum virtio_video_format format);
-int virtio_video_query_control_level(struct virtio_video_device *vvd,
-				     void *resp_buf, size_t resp_size,
-				     enum virtio_video_format format);
-int virtio_video_cmd_set_params(struct virtio_video_device *vvd,
-				struct virtio_video_stream *stream,
-				struct video_format_info *format_info,
-				enum virtio_video_queue_type queue_type);
-int virtio_video_cmd_get_params(struct virtio_video_device *vvd,
-				struct virtio_video_stream *stream,
-				enum virtio_video_queue_type queue_type);
-int virtio_video_cmd_set_control(struct virtio_video_device *vvd,
-				 uint32_t stream_id,
-				 enum virtio_video_control_type control,
-				 uint32_t value);
-int virtio_video_cmd_get_control(struct virtio_video_device *vvd,
-				 struct virtio_video_stream *stream,
-				 enum virtio_video_control_type control);
-
-void virtio_video_queue_res_chg_event(struct virtio_video_stream *stream);
-void virtio_video_queue_eos_event(struct virtio_video_stream *stream);
-void virtio_video_handle_error(struct virtio_video_stream *stream);
-int virtio_video_queue_release_buffers(struct virtio_video_stream *stream,
-				       enum virtio_video_queue_type queue_type);
-
-void virtio_video_cmd_cb(struct virtqueue *vq);
-void virtio_video_event_cb(struct virtqueue *vq);
-void virtio_video_process_events(struct work_struct *work);
-
-void virtio_video_buf_done(struct virtio_video_buffer *virtio_vb,
-			   uint32_t flags, uint64_t timestamp,
-			   uint32_t data_sizes[]);
-int virtio_video_buf_plane_init(uint32_t idx,uint32_t resource_id,
-				struct virtio_video_device *vvd,
-				struct virtio_video_stream *stream,
-				struct vb2_buffer *vb);
-int virtio_video_queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
-			     unsigned int *num_planes, unsigned int sizes[],
-			     struct device *alloc_devs[]);
-int virtio_video_buf_init(struct vb2_buffer *vb);
-void virtio_video_buf_cleanup(struct vb2_buffer *vb);
-void virtio_video_buf_queue(struct vb2_buffer *vb);
-int virtio_video_qbuf(struct file *file, void *priv,
-		      struct v4l2_buffer *buf);
-int virtio_video_dqbuf(struct file *file, void *priv,
-		       struct v4l2_buffer *buf);
-int virtio_video_querycap(struct file *file, void *fh,
-			  struct v4l2_capability *cap);
-int virtio_video_enum_framesizes(struct file *file, void *fh,
-				 struct v4l2_frmsizeenum *f);
-int virtio_video_enum_framemintervals(struct file *file, void *fh,
-				      struct v4l2_frmivalenum *f);
-int virtio_video_g_fmt(struct file *file, void *fh, struct v4l2_format *f);
-int virtio_video_s_fmt(struct file *file, void *fh, struct v4l2_format *f);
-int virtio_video_try_fmt(struct virtio_video_stream *stream,
-			 struct v4l2_format *f);
-int virtio_video_reqbufs(struct file *file, void *priv,
-                        struct v4l2_requestbuffers *rb);
-int virtio_video_subscribe_event(struct v4l2_fh *fh,
-				 const struct v4l2_event_subscription *sub);
-
-void virtio_video_free_caps_list(struct list_head *caps_list);
-int virtio_video_parse_virtio_capabilities(struct virtio_video_device *vvd,
-					   void *input_buf, void *output_buf);
-void virtio_video_clean_capability(struct virtio_video_device *vvd);
-int virtio_video_parse_virtio_control(struct virtio_video_device *vvd);
-void virtio_video_clean_control(struct virtio_video_device *vvd);
-
-uint32_t virtio_video_format_to_v4l2(uint32_t format);
-uint32_t virtio_video_control_to_v4l2(uint32_t control);
-uint32_t virtio_video_profile_to_v4l2(uint32_t profile);
-uint32_t virtio_video_level_to_v4l2(uint32_t level);
-uint32_t virtio_video_v4l2_format_to_virtio(uint32_t v4l2_format);
-uint32_t virtio_video_v4l2_control_to_virtio(uint32_t v4l2_control);
-uint32_t virtio_video_v4l2_profile_to_virtio(uint32_t v4l2_profile);
-uint32_t virtio_video_v4l2_level_to_virtio(uint32_t v4l2_level);
-
-struct video_format *virtio_video_find_video_format(struct list_head *fmts_list,
-						    uint32_t fourcc);
-void virtio_video_format_from_info(struct video_format_info *info,
-				   struct v4l2_pix_format_mplane *pix_mp);
-void virtio_video_format_fill_default_info(struct video_format_info *dst_info,
-                                          struct video_format_info *src_info);
-void virtio_video_pix_fmt_sp2mp(const struct v4l2_pix_format *pix,
-				struct v4l2_pix_format_mplane *pix_mp);
-void virtio_video_pix_fmt_mp2sp(const struct v4l2_pix_format_mplane *pix_mp,
-				struct v4l2_pix_format *pix);
-
-int virtio_video_g_selection(struct file *file, void *fh,
-			     struct v4l2_selection *sel);
-
-int virtio_video_stream_get_params(struct virtio_video_device *vvd,
-				   struct virtio_video_stream *stream);
-int virtio_video_stream_get_controls(struct virtio_video_device *vvd,
-				     struct virtio_video_stream *stream);
-
-#endif /* _VIRTIO_VIDEO_H */