Hi Dmitry, On Wed, Feb 19, 2020 at 5:28 AM Dmitry Sepp <dmitry.sepp@xxxxxxxxxxxxxxx> wrote: > > This adds a Virtio based video driver for video streaming device that > operates input and output data buffers to share video devices with > several guests. The current implementation consist of V4L2 based video > driver supporting video functions of decoder and encoder. The device > uses command structures to advertise and negotiate stream formats and > controls. This allows the driver to modify the processing logic of the > device on a per stream basis. > > Signed-off-by: Dmitry Sepp <dmitry.sepp@xxxxxxxxxxxxxxx> > Signed-off-by: Kiran Pawar <Kiran.Pawar@xxxxxxxxxxxxxxx> > Signed-off-by: Nikolay Martyanov <Nikolay.Martyanov@xxxxxxxxxxxxxxx> > Signed-off-by: Samiullah Khawaja <samiullah.khawaja@xxxxxxxxxxxxxxx> > --- > drivers/media/Kconfig | 1 + > drivers/media/Makefile | 2 + > drivers/media/virtio/Kconfig | 12 + > drivers/media/virtio/Makefile | 12 + > drivers/media/virtio/virtio_video.h | 402 +++++++ > drivers/media/virtio/virtio_video_caps.c | 498 +++++++++ > drivers/media/virtio/virtio_video_dec.c | 427 ++++++++ > drivers/media/virtio/virtio_video_dec.h | 30 + > drivers/media/virtio/virtio_video_device.c | 1079 +++++++++++++++++++ > drivers/media/virtio/virtio_video_driver.c | 315 ++++++ > drivers/media/virtio/virtio_video_enc.c | 569 ++++++++++ > drivers/media/virtio/virtio_video_enc.h | 30 + > drivers/media/virtio/virtio_video_helpers.c | 250 +++++ > drivers/media/virtio/virtio_video_vq.c | 1012 +++++++++++++++++ > include/uapi/linux/virtio_ids.h | 2 + > include/uapi/linux/virtio_video.h | 469 ++++++++ > 16 files changed, 5110 insertions(+) > create mode 100644 drivers/media/virtio/Kconfig > create mode 100644 drivers/media/virtio/Makefile > create mode 100644 drivers/media/virtio/virtio_video.h > create mode 100644 drivers/media/virtio/virtio_video_caps.c > create mode 100644 drivers/media/virtio/virtio_video_dec.c > create mode 100644 drivers/media/virtio/virtio_video_dec.h > create mode 100644 drivers/media/virtio/virtio_video_device.c > create mode 100644 drivers/media/virtio/virtio_video_driver.c > create mode 100644 drivers/media/virtio/virtio_video_enc.c > create mode 100644 drivers/media/virtio/virtio_video_enc.h > create mode 100644 drivers/media/virtio/virtio_video_helpers.c > create mode 100644 drivers/media/virtio/virtio_video_vq.c > create mode 100644 include/uapi/linux/virtio_video.h > > diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig > index 092e7509af9b..b89169e5d24d 100644 > --- a/drivers/media/Kconfig > +++ b/drivers/media/Kconfig > @@ -205,6 +205,7 @@ source "drivers/media/pci/Kconfig" > source "drivers/media/platform/Kconfig" > source "drivers/media/mmc/Kconfig" > source "drivers/media/radio/Kconfig" > +source "drivers/media/virtio/Kconfig" > > comment "Supported FireWire (IEEE 1394) Adapters" > depends on DVB_CORE && FIREWIRE > diff --git a/drivers/media/Makefile b/drivers/media/Makefile > index 4a330d0e5e40..1d886730bafd 100644 > --- a/drivers/media/Makefile > +++ b/drivers/media/Makefile > @@ -34,6 +34,8 @@ obj-y += rc/ > > obj-$(CONFIG_CEC_CORE) += cec/ > > +obj-$(CONFIG_VIRTIO_VIDEO) += virtio/ > + > # > # Finally, merge the drivers that require the core > # > diff --git a/drivers/media/virtio/Kconfig b/drivers/media/virtio/Kconfig > new file mode 100644 > index 000000000000..82012178254d > --- /dev/null > +++ b/drivers/media/virtio/Kconfig > @@ -0,0 +1,12 @@ > +# SPDX-License-Identifier: GPL-2.0+ > +# Video driver for virtio > + > +config VIRTIO_VIDEO > + tristate "Virtio video V4L2 driver" > + depends on VIRTIO && VIDEO_DEV && VIDEO_V4L2 > + select VIDEOBUF2_DMA_SG > + select VIDEOBUF2_DMA_CONTIG > + select V4L2_MEM2MEM_DEV > + help > + This is the virtual video driver for virtio. > + Say Y or M. > diff --git a/drivers/media/virtio/Makefile b/drivers/media/virtio/Makefile > new file mode 100644 > index 000000000000..b17dce4cfc19 > --- /dev/null > +++ b/drivers/media/virtio/Makefile > @@ -0,0 +1,12 @@ > +# SPDX-License-Identifier: GPL-2.0+ > + > +obj-$(CONFIG_VIRTIO_VIDEO) += virtio-video.o > + > +virtio-video-objs := \ > + virtio_video_driver.o \ > + virtio_video_device.o \ > + virtio_video_vq.o \ > + virtio_video_dec.o \ > + virtio_video_enc.o \ > + virtio_video_caps.o \ > + virtio_video_helpers.o > diff --git a/drivers/media/virtio/virtio_video.h b/drivers/media/virtio/virtio_video.h > new file mode 100644 > index 000000000000..c5a5704326c0 > --- /dev/null > +++ b/drivers/media/virtio/virtio_video.h > @@ -0,0 +1,402 @@ > +/* SPDX-License-Identifier: GPL-2.0+ */ > +/* Common header for virtio video driver. > + * > + * Copyright 2019 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 <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 MIN_BUFS_MIN 0 > +#define MIN_BUFS_MAX 32 > +#define MIN_BUFS_STEP 1 > +#define MIN_BUFS_DEF 1 > + > +enum virtio_video_device_type { > + VIRTIO_VIDEO_DEVICE_ENCODER = 0x0100, > + VIRTIO_VIDEO_DEVICE_DECODER, > +}; > + > +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]; > + bool is_updated; > +}; > + > +struct video_control_info { > + uint32_t profile; > + uint32_t level; > + uint32_t bitrate; > + bool is_updated; > +}; > + > +struct virtio_video; > +struct virtio_video_vbuffer; > + > +typedef void (*virtio_video_resp_cb)(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf); > + > +struct virtio_video_vbuffer { > + char *buf; > + int size; > + > + void *data_buf; > + uint32_t data_size; > + > + char *resp_buf; > + int resp_size; > + > + void *priv; > + virtio_video_resp_cb resp_cb; > + > + struct list_head list; > +}; > + > +struct virtio_video_queue { > + struct virtqueue *vq; > + spinlock_t qlock; > + wait_queue_head_t ack_queue; > + struct work_struct dequeue_work; > +}; > + > +struct virtio_video { > + struct v4l2_device v4l2_dev; > + int instance; > + > + struct virtio_device *vdev; > + struct virtio_video_queue commandq; > + struct virtio_video_queue eventq; > + wait_queue_head_t wq; > + bool vq_ready; > + > + struct kmem_cache *vbufs; > + > + 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 got_caps; > + bool got_control; > + > + bool has_iommu; > + bool supp_non_contig; > + struct list_head devices_list; > + > + int debug; > + int use_dma_mem; > +}; > + > +struct virtio_video_device { > + struct virtio_video *vv; > + struct video_device video_dev; > + struct mutex video_dev_mutex; > + > + struct v4l2_m2m_dev *m2m_dev; > + > + struct workqueue_struct *workqueue; > + > + struct list_head devices_list_entry; > + /* 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; > +}; > + > +enum video_stream_state { > + STREAM_STATE_IDLE = 0, > + STREAM_STATE_INIT, > + STREAM_STATE_METADATA, /* specific to decoder */ > + STREAM_STATE_RUNNING, > + STREAM_STATE_DRAIN, > + STREAM_STATE_STOPPED, > + STREAM_STATE_RESET, /* specific to encoder */ > +}; > + > +struct virtio_video_stream { > + uint32_t stream_id; > + enum video_stream_state 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; > + bool src_cleared; > + bool dst_cleared; > + bool src_destroyed; > + bool dst_destroyed; > + struct work_struct work; > + struct video_format_frame *current_frame; > +}; > + > +struct virtio_video_buffer { > + struct v4l2_m2m_buffer v4l2_m2m_vb; > + uint32_t resource_id; > + bool queued; > +}; > + > +static inline gfp_t > +virtio_video_gfp_flags(struct virtio_video *vv) > +{ > + if (vv->use_dma_mem) > + return GFP_DMA; > + else > + return 0; > +} > + > +static inline const struct vb2_mem_ops * > +virtio_video_mem_ops(struct virtio_video *vv) > +{ > + if (vv->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_stream *work2stream(struct work_struct *work) > +{ > + return container_of(work, struct virtio_video_stream, work); > +} > + > +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 uint32_t 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 ((val - min) <= (max - min)); > +} > + > +static inline bool needs_alignment(uint32_t val, uint32_t a) > +{ > + if (a == 0 || IS_ALIGNED(val, a)) > + return false; > + > + return true; > +} > + > +int virtio_video_alloc_vbufs(struct virtio_video *vv); > +void virtio_video_free_vbufs(struct virtio_video *vv); > +int virtio_video_alloc_events(struct virtio_video *vv, size_t num); > + > +int virtio_video_device_init(struct virtio_video *vv, void *input_buf, > + void *output_buf); > +void virtio_video_device_deinit(struct virtio_video *vv); > + > +void virtio_video_stream_id_get(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + uint32_t *id); > +void virtio_video_stream_id_put(struct virtio_video *vv, uint32_t id); > +void virtio_video_resource_id_get(struct virtio_video *vv, uint32_t *id); > +void virtio_video_resource_id_put(struct virtio_video *vv, uint32_t id); > + > +int virtio_video_cmd_stream_create(struct virtio_video *vv, uint32_t stream_id, > + enum virtio_video_format format, > + const char *tag); > +int virtio_video_cmd_stream_destroy(struct virtio_video *vv, > + uint32_t stream_id); > +int virtio_video_cmd_stream_drain(struct virtio_video *vv, uint32_t stream_id); > +int virtio_video_cmd_resource_create(struct virtio_video *vv, > + uint32_t stream_id, uint32_t resource_id, > + uint32_t queue_type, > + struct virtio_video_mem_entry *ents, > + unsigned int num_planes, > + unsigned int *num_entry); > +int virtio_video_cmd_resource_destroy_all(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + uint32_t queue_type); > +int virtio_video_cmd_resource_queue(struct virtio_video *vv, uint32_t stream_id, > + struct virtio_video_buffer *virtio_vb, > + uint32_t data_size[], uint8_t num_data_size, > + uint32_t queue_type); > +int virtio_video_cmd_queue_clear(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + uint32_t queue_type); > +int virtio_video_query_capability(struct virtio_video *vv, void *resp_buf, > + size_t resp_size, uint32_t queue_type); > +int virtio_video_query_control_profile(struct virtio_video *vv, void *resp_buf, > + size_t resp_size, uint32_t format); > +int virtio_video_query_control_level(struct virtio_video *vv, void *resp_buf, > + size_t resp_size, uint32_t format); > +int virtio_video_cmd_set_params(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + struct video_format_info *format_info, > + uint32_t queue_type); > +int virtio_video_cmd_get_params(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + uint32_t queue_type); > +int virtio_video_cmd_set_control(struct virtio_video *vv, > + uint32_t stream_id, > + uint32_t control, uint32_t val); > +int virtio_video_cmd_get_control(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + uint32_t ctrl); > + > +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_cmd_ack(struct virtqueue *vq); > +void virtio_video_event_ack(struct virtqueue *vq); > +void virtio_video_dequeue_cmd_func(struct work_struct *work); > +void virtio_video_dequeue_event_func(struct work_struct *work); > +void virtio_video_buf_done(struct virtio_video_buffer *virtio_vb, > + uint32_t flags, uint64_t timestamp, uint32_t size); > +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); > +void virtio_video_mark_drain_complete(struct virtio_video_stream *stream, > + struct vb2_v4l2_buffer *v4l2_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); > +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_capability(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 *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); > + > +int virtio_video_g_selection(struct file *file, void *fh, > + struct v4l2_selection *sel); > +int virtio_video_s_selection(struct file *file, void *fh, > + struct v4l2_selection *sel); > + > +#endif /* _VIRTIO_VIDEO_H */ > diff --git a/drivers/media/virtio/virtio_video_caps.c b/drivers/media/virtio/virtio_video_caps.c > new file mode 100644 > index 000000000000..2f9d4da92810 > --- /dev/null > +++ b/drivers/media/virtio/virtio_video_caps.c > @@ -0,0 +1,498 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* Driver for virtio video device. > + * > + * Copyright 2019 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 <media/v4l2-ioctl.h> > +#include <media/videobuf2-dma-sg.h> > + > +#include "virtio_video.h" > + > +static void virtio_video_free_frame_rates(struct video_format_frame *frame) > +{ > + if (!frame) > + return; > + > + kfree(frame->frame_rates); > +} > + > +static void virtio_video_free_frames(struct video_format *fmt) > +{ > + size_t idx = 0; > + > + if (!fmt) > + return; > + > + for (idx = 0; idx < fmt->desc.num_frames; idx++) > + virtio_video_free_frame_rates(&fmt->frames[idx]); > + kfree(fmt->frames); > +} > + > +static void virtio_video_free_fmt(struct list_head *fmts_list) > +{ > + struct video_format *fmt = NULL; > + struct video_format *tmp = NULL; > + > + list_for_each_entry_safe(fmt, tmp, fmts_list, formats_list_entry) { > + list_del(&fmt->formats_list_entry); > + virtio_video_free_frames(fmt); > + kfree(fmt); > + } > +} > + > +static void virtio_video_free_fmts(struct virtio_video_device *vvd) > +{ > + virtio_video_free_fmt(&vvd->input_fmt_list); > + virtio_video_free_fmt(&vvd->output_fmt_list); > +} > + > +static void assign_format_range(struct virtio_video_format_range *d_range, > + struct virtio_video_format_range *s_range) > +{ > + d_range->min = le32_to_cpu(s_range->min); > + d_range->max = le32_to_cpu(s_range->max); > + d_range->step = le32_to_cpu(s_range->step); > +} > + > +static size_t > +virtio_video_parse_virtio_frame_rate(struct virtio_video_device *vvd, > + struct virtio_video_format_range *f_rate, > + void *buf) > +{ > + struct virtio_video_format_range *virtio_frame_rate = NULL; > + size_t frame_rate_size = sizeof(struct virtio_video_format_range); > + > + if (!f_rate || !buf || !vvd) > + return 0; > + > + virtio_frame_rate = buf; > + assign_format_range(f_rate, virtio_frame_rate); > + return frame_rate_size; > +} > + > +static size_t virtio_video_parse_virtio_frame(struct virtio_video_device *vvd, > + struct video_format_frame *frm, > + void *buf) > +{ > + struct virtio_video *vv = NULL; > + struct virtio_video_format_frame *virtio_frame = NULL; > + struct virtio_video_format_frame *frame = &frm->frame; > + struct virtio_video_format_range *rate = NULL; > + size_t idx, offset = 0; > + size_t extra_size = 0; > + > + if (!frame || !buf || !vvd) > + return 0; > + > + vv = vvd->vv; > + virtio_frame = buf; > + > + assign_format_range(&frame->width, &virtio_frame->width); > + assign_format_range(&frame->height, &virtio_frame->height); > + > + frame->num_rates = le32_to_cpu(virtio_frame->num_rates); > + frm->frame_rates = kcalloc(frame->num_rates, > + sizeof(struct virtio_video_format_range), > + GFP_KERNEL); > + > + offset = sizeof(struct virtio_video_format_frame); > + for (idx = 0; idx < frame->num_rates; idx++) { > + rate = &frm->frame_rates[idx]; > + extra_size = > + virtio_video_parse_virtio_frame_rate(vvd, rate, > + buf + offset); > + if (extra_size == 0) { > + kfree(frm->frame_rates); > + v4l2_err(&vv->v4l2_dev, "failed to parse frame rate\n"); > + return 0; > + } > + offset += extra_size; > + } > + > + return offset; > +} > + > +static size_t virtio_video_parse_virtio_fmt(struct virtio_video_device *vvd, > + struct video_format *fmt, void *buf) > +{ > + struct virtio_video *vv = NULL; > + struct virtio_video_format_desc *virtio_fmt_desc = NULL; > + struct virtio_video_format_desc *fmt_desc = NULL; > + struct video_format_frame *frame = NULL; > + size_t idx, offset = 0; > + size_t extra_size = 0; > + > + if (!fmt || !buf || !vvd) > + return 0; > + > + vv = vvd->vv; > + virtio_fmt_desc = buf; > + fmt_desc = &fmt->desc; > + > + fmt_desc->format = > + virtio_video_format_to_v4l2 > + (le32_to_cpu(virtio_fmt_desc->format)); > + fmt_desc->mask = le64_to_cpu(virtio_fmt_desc->mask); > + fmt_desc->planes_layout = le32_to_cpu(virtio_fmt_desc->planes_layout); > + > + fmt_desc->num_frames = le32_to_cpu(virtio_fmt_desc->num_frames); > + fmt->frames = kcalloc(fmt_desc->num_frames, > + sizeof(struct video_format_frame), > + GFP_KERNEL); > + > + offset = sizeof(struct virtio_video_format_desc); > + for (idx = 0; idx < fmt_desc->num_frames; idx++) { > + frame = &fmt->frames[idx]; > + extra_size = > + virtio_video_parse_virtio_frame(vvd, frame, > + buf + offset); > + if (extra_size == 0) { > + kfree(fmt->frames); > + v4l2_err(&vv->v4l2_dev, "failed to parse frame\n"); > + return 0; > + } > + offset += extra_size; > + } > + > + return offset; > +} > + > +int virtio_video_parse_virtio_capability(struct virtio_video_device *vvd, > + void *input_buf, void *output_buf) > +{ > + struct virtio_video *vv = NULL; > + struct virtio_video_query_capability_resp *input_resp = input_buf; > + struct virtio_video_query_capability_resp *output_resp = output_buf; > + int fmt_idx = 0; > + size_t offset = 0; > + struct video_format *fmt = NULL; > + > + if (!input_buf || !output_buf || !vvd) > + return -1; > + > + vv = vvd->vv; > + > + if (le32_to_cpu(input_resp->num_descs) <= 0 || > + le32_to_cpu(output_resp->num_descs) <= 0) { > + v4l2_err(&vv->v4l2_dev, "invalid capability response\n"); > + return -1; > + } > + > + vvd->num_input_fmts = le32_to_cpu(input_resp->num_descs); > + offset = sizeof(struct virtio_video_query_capability_resp); > + > + for (fmt_idx = 0; fmt_idx < vvd->num_input_fmts; fmt_idx++) { > + size_t fmt_size = 0; > + > + fmt = kzalloc(sizeof(*fmt), GFP_KERNEL); > + if (!fmt) { > + virtio_video_free_fmts(vvd); > + return -1; > + } > + > + fmt_size = virtio_video_parse_virtio_fmt(vvd, fmt, > + input_buf + offset); > + if (fmt_size == 0) { > + v4l2_err(&vv->v4l2_dev, "failed to parse input fmt\n"); > + virtio_video_free_fmts(vvd); > + kfree(fmt); > + return -1; > + } > + offset += fmt_size; > + list_add(&fmt->formats_list_entry, &vvd->input_fmt_list); > + } > + > + vvd->num_output_fmts = le32_to_cpu(output_resp->num_descs); > + offset = sizeof(struct virtio_video_query_capability_resp); > + > + for (fmt_idx = 0; fmt_idx < vvd->num_output_fmts; fmt_idx++) { > + size_t fmt_size = 0; > + > + fmt = kzalloc(sizeof(*fmt), GFP_KERNEL); > + if (!fmt) { > + virtio_video_free_fmts(vvd); > + return -1; > + } > + > + fmt_size = virtio_video_parse_virtio_fmt(vvd, fmt, > + output_buf + offset); > + if (fmt_size == 0) { > + v4l2_err(&vv->v4l2_dev, "failed to parse output fmt\n"); > + virtio_video_free_fmts(vvd); > + kfree(fmt); > + return -1; > + } > + offset += fmt_size; > + list_add(&fmt->formats_list_entry, &vvd->output_fmt_list); > + } > + return 0; > +} > + > +void virtio_video_clean_capability(struct virtio_video_device *vvd) > +{ > + if (!vvd) > + return; > + virtio_video_free_fmts(vvd); > +} > + > +static void > +virtio_video_free_control_fmt_data(struct video_control_fmt_data *data) > +{ > + if (!data) > + return; > + > + kfree(data->entries); > + kfree(data); > +} > + > +static void virtio_video_free_control_formats(struct virtio_video_device *vvd) > +{ > + struct video_control_format *c_fmt = NULL; > + struct video_control_format *tmp = NULL; > + > + list_for_each_entry_safe(c_fmt, tmp, &vvd->controls_fmt_list, > + controls_list_entry) { > + list_del(&c_fmt->controls_list_entry); > + virtio_video_free_control_fmt_data(c_fmt->profile); > + virtio_video_free_control_fmt_data(c_fmt->level); > + kfree(c_fmt); > + } > +} > + > +static int virtio_video_parse_control_levels(struct virtio_video_device *vvd, > + struct video_control_format *fmt) > +{ > + int idx, ret = 0; > + struct virtio_video_query_control_resp *resp_buf = NULL; > + struct virtio_video_query_control_resp_level *l_resp_buf = NULL; > + struct virtio_video *vv = NULL; > + uint32_t virtio_format, num_levels, mask = 0; > + uint32_t *virtio_levels = NULL; > + struct video_control_fmt_data *level = NULL; > + int max = 0, min = UINT_MAX; > + size_t resp_size; > + > + if (!vvd) > + return -EINVAL; > + > + vv = vvd->vv; > + resp_size = vv->max_resp_len; > + > + virtio_format = virtio_video_v4l2_format_to_virtio(fmt->format); > + > + resp_buf = kzalloc(resp_size, GFP_KERNEL); > + if (IS_ERR(resp_buf)) { > + ret = PTR_ERR(resp_buf); > + goto err; > + } > + > + vv->got_control = false; > + ret = virtio_video_query_control_level(vv, resp_buf, resp_size, > + virtio_format); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to query level\n"); > + goto err; > + } > + > + ret = wait_event_timeout(vv->wq, vv->got_control, 5 * HZ); > + if (ret == 0) { > + v4l2_err(&vv->v4l2_dev, > + "timed out waiting for query level\n"); > + ret = -EIO; > + goto err; > + } > + > + ret = 0; > + l_resp_buf = (void *)((char *)resp_buf + sizeof(*resp_buf)); > + num_levels = le32_to_cpu(l_resp_buf->num); > + if (num_levels == 0) > + goto err; > + > + fmt->level = kzalloc(sizeof(*level), GFP_KERNEL); > + if (!fmt->level) { > + ret = -ENOMEM; > + goto err; > + } > + > + level = fmt->level; > + level->entries = kcalloc(num_levels, sizeof(uint32_t), GFP_KERNEL); > + if (!level->entries) { > + ret = -ENOMEM; > + goto err; > + } > + > + virtio_levels = (void *)((char *)l_resp_buf + sizeof(*l_resp_buf)); > + > + for (idx = 0; idx < num_levels; idx++) { > + level->entries[idx] = > + virtio_video_level_to_v4l2 > + (le32_to_cpu(virtio_levels[idx])); > + > + mask = mask | (1 << level->entries[idx]); > + if (level->entries[idx] > max) > + max = level->entries[idx]; > + if (level->entries[idx] < min) > + min = level->entries[idx]; > + } > + level->min = min; > + level->max = max; > + level->num = num_levels; > + level->skip_mask = ~mask; > +err: > + kfree(resp_buf); > + return ret; > +} > + > +static int virtio_video_parse_control_profiles(struct virtio_video_device *vvd, > + struct video_control_format *fmt) > +{ > + int idx, ret = 0; > + struct virtio_video_query_control_resp *resp_buf = NULL; > + struct virtio_video_query_control_resp_profile *p_resp_buf = NULL; > + struct virtio_video *vv = NULL; > + uint32_t virtio_format, num_profiles, mask = 0; > + uint32_t *virtio_profiles = NULL; > + struct video_control_fmt_data *profile = NULL; > + int max = 0, min = UINT_MAX; > + size_t resp_size; > + > + if (!vvd) > + return -EINVAL; > + > + vv = vvd->vv; > + resp_size = vv->max_resp_len; > + virtio_format = virtio_video_v4l2_format_to_virtio(fmt->format); > + resp_buf = kzalloc(resp_size, GFP_KERNEL); > + if (IS_ERR(resp_buf)) { > + ret = PTR_ERR(resp_buf); > + goto err; > + } > + > + vv->got_control = false; > + ret = virtio_video_query_control_profile(vv, resp_buf, resp_size, > + virtio_format); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to query profile\n"); > + goto err; > + } > + > + ret = wait_event_timeout(vv->wq, vv->got_control, 5 * HZ); > + if (ret == 0) { > + v4l2_err(&vv->v4l2_dev, > + "timed out waiting for query profile\n"); > + ret = -EIO; > + goto err; > + } > + > + ret = 0; > + p_resp_buf = (void *)((char *)resp_buf + sizeof(*resp_buf)); > + num_profiles = le32_to_cpu(p_resp_buf->num); > + if (num_profiles == 0) > + goto err; > + > + fmt->profile = kzalloc(sizeof(*profile), GFP_KERNEL); > + if (!fmt->profile) { > + ret = -ENOMEM; > + goto err; > + } > + > + profile = fmt->profile; > + profile->entries = kcalloc(num_profiles, sizeof(uint32_t), GFP_KERNEL); > + if (!profile->entries) { > + ret = -ENOMEM; > + goto err; > + } > + > + virtio_profiles = (void *)((char *)p_resp_buf + sizeof(*p_resp_buf)); > + > + for (idx = 0; idx < num_profiles; idx++) { > + profile->entries[idx] = > + virtio_video_profile_to_v4l2 > + (le32_to_cpu(virtio_profiles[idx])); > + > + mask = mask | (1 << profile->entries[idx]); > + if (profile->entries[idx] > max) > + max = profile->entries[idx]; > + if (profile->entries[idx] < min) > + min = profile->entries[idx]; > + } > + profile->min = min; > + profile->max = max; > + profile->num = num_profiles; > + profile->skip_mask = ~mask; > +err: > + kfree(resp_buf); > + return ret; > +} > + > +int virtio_video_parse_virtio_control(struct virtio_video_device *vvd) > +{ > + struct video_format *fmt = NULL; > + struct video_control_format *c_fmt = NULL; > + struct virtio_video *vv = NULL; > + uint32_t virtio_format; > + int ret = 0; > + > + if (!vvd) > + return -EINVAL; > + > + vv = vvd->vv; > + > + list_for_each_entry(fmt, &vvd->output_fmt_list, formats_list_entry) { > + virtio_format = > + virtio_video_v4l2_format_to_virtio(fmt->desc.format); > + if (virtio_format < VIRTIO_VIDEO_FORMAT_CODED_MIN || > + virtio_format > VIRTIO_VIDEO_FORMAT_CODED_MAX) > + continue; > + > + c_fmt = kzalloc(sizeof(*c_fmt), GFP_KERNEL); > + if (!c_fmt) { > + virtio_video_free_control_formats(vvd); > + return -1; > + } > + > + c_fmt->format = fmt->desc.format; > + ret = virtio_video_parse_control_profiles(vvd, c_fmt); > + if (ret) { > + virtio_video_free_control_formats(vvd); > + kfree(c_fmt); > + v4l2_err(&vv->v4l2_dev, > + "failed to parse control profile\n"); > + goto err; > + } > + ret = virtio_video_parse_control_levels(vvd, c_fmt); > + if (ret) { > + virtio_video_free_control_formats(vvd); > + kfree(c_fmt); > + v4l2_err(&vv->v4l2_dev, > + "failed to parse control level\n"); > + goto err; > + } > + list_add(&c_fmt->controls_list_entry, &vvd->controls_fmt_list); > + } > + return 0; > +err: > + return ret; > +} > + > +void virtio_video_clean_control(struct virtio_video_device *vvd) > +{ > + if (!vvd) > + return; > + > + virtio_video_free_control_formats(vvd); > +} > diff --git a/drivers/media/virtio/virtio_video_dec.c b/drivers/media/virtio/virtio_video_dec.c > new file mode 100644 > index 000000000000..fc805933fc5e > --- /dev/null > +++ b/drivers/media/virtio/virtio_video_dec.c > @@ -0,0 +1,427 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* Decoder for virtio video device. > + * > + * Copyright 2019 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 <media/v4l2-event.h> > +#include <media/v4l2-ioctl.h> > + > +#include "virtio_video.h" > + > +static void virtio_video_dec_buf_queue(struct vb2_buffer *vb) > +{ > + int i, ret; > + struct vb2_buffer *src_buf; > + struct vb2_v4l2_buffer *src_vb; > + struct virtio_video_buffer *virtio_vb; > + uint32_t data_size[VB2_MAX_PLANES] = {0}; > + struct vb2_v4l2_buffer *v4l2_vb = to_vb2_v4l2_buffer(vb); > + struct virtio_video_stream *stream = vb2_get_drv_priv(vb->vb2_queue); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct virtio_video *vv = vvd->vv; > + > + v4l2_m2m_buf_queue(stream->fh.m2m_ctx, v4l2_vb); > + > + if ((stream->state != STREAM_STATE_INIT) || > + !V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) > + return; > + > + src_vb = v4l2_m2m_next_src_buf(stream->fh.m2m_ctx); > + if (!src_vb) { > + v4l2_err(&vv->v4l2_dev, "no src buf during initialization\n"); > + return; > + } > + > + src_buf = &src_vb->vb2_buf; > + for (i = 0; i < src_buf->num_planes; ++i) > + data_size[i] = src_buf->planes[i].bytesused; > + > + virtio_vb = to_virtio_vb(src_buf); > + > + ret = virtio_video_cmd_resource_queue(vv, stream->stream_id, > + virtio_vb, data_size, > + src_buf->num_planes, > + VIRTIO_VIDEO_QUEUE_TYPE_INPUT); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to queue an src buffer\n"); > + return; > + } > + > + virtio_vb->queued = true; > + stream->src_cleared = false; > + src_vb = v4l2_m2m_src_buf_remove(stream->fh.m2m_ctx); > +} > + > +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 (!V4L2_TYPE_IS_OUTPUT(vq->type) && > + stream->state >= STREAM_STATE_INIT) > + stream->state = STREAM_STATE_RUNNING; > + > + return 0; > +} > + > +static void virtio_video_dec_stop_streaming(struct vb2_queue *vq) > +{ > + int ret, queue_type; > + bool *cleared; > + bool is_v4l2_output = V4L2_TYPE_IS_OUTPUT(vq->type); > + struct virtio_video_stream *stream = vb2_get_drv_priv(vq); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct virtio_video *vv = vvd->vv; > + struct vb2_v4l2_buffer *v4l2_vb; > + > + if (is_v4l2_output) { > + cleared = &stream->src_cleared; > + queue_type = VIRTIO_VIDEO_QUEUE_TYPE_INPUT; > + } else { > + cleared = &stream->dst_cleared; > + queue_type = VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT; > + } > + > + ret = virtio_video_cmd_queue_clear(vv, stream, queue_type); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to clear queue\n"); > + return; > + } > + > + ret = wait_event_timeout(vv->wq, *cleared, 5 * HZ); > + if (ret == 0) { > + v4l2_err(&vv->v4l2_dev, "timed out waiting for queue clear\n"); > + return; > + } > + > + for (;;) { > + if (is_v4l2_output) > + v4l2_vb = v4l2_m2m_src_buf_remove(stream->fh.m2m_ctx); > + else > + v4l2_vb = v4l2_m2m_dst_buf_remove(stream->fh.m2m_ctx); > + if (!v4l2_vb) > + break; > + v4l2_m2m_buf_done(v4l2_vb, VB2_BUF_STATE_ERROR); > + } > +} > + > +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_dec_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_volatile_ctrl(struct v4l2_ctrl *ctrl) > +{ > + int ret = 0; > + struct virtio_video_stream *stream = ctrl2stream(ctrl); > + > + switch (ctrl->id) { > + case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: > + if (stream->state >= STREAM_STATE_METADATA) > + ctrl->val = stream->out_info.min_buffers; > + else > + ctrl->val = 0; > + break; > + default: > + ret = -EINVAL; > + } > + > + return ret; > +} > + > +static const struct v4l2_ctrl_ops virtio_video_dec_ctrl_ops = { > + .g_volatile_ctrl = virtio_video_dec_g_volatile_ctrl, > +}; > + > +int virtio_video_dec_init_ctrls(struct virtio_video_stream *stream) > +{ > + struct v4l2_ctrl *ctrl; > + > + v4l2_ctrl_handler_init(&stream->ctrl_handler, 1); > + > + 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); > + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; > + > + 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 virtio_video *vv = vvd->vv; > + struct device *dev = vv->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(vv); > + 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(vv); > + 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(vv); > + 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(vv); > + 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); > + struct virtio_video *vv = vvd->vv; > + > + if (stream->state == STREAM_STATE_DRAIN) > + return -EBUSY; > + > + switch (cmd->cmd) { > + case V4L2_DEC_CMD_STOP: > + case V4L2_DEC_CMD_START: > + if (cmd->flags != 0) { > + v4l2_err(&vv->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); > + struct virtio_video *vv = vvd->vv; > + > + 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, vv->debug, > + &vv->v4l2_dev, "output is not streaming\n"); > + return 0; > + } > + > + if (!vb2_is_streaming(dst_vq)) { > + v4l2_dbg(1, vv->debug, > + &vv->v4l2_dev, "capture is not streaming\n"); > + return 0; > + } > + > + ret = virtio_video_cmd_stream_drain(vv, stream->stream_id); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to drain stream\n"); > + return ret; > + } > + > + stream->state = 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 = NULL; > + struct video_format *fmt = NULL; > + unsigned long input_mask = 0; > + int idx = 0, bit_num = 0; > + > + 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 = NULL; > + int idx = 0; > + > + 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 (stream->state == STREAM_STATE_IDLE) > + stream->state = STREAM_STATE_INIT; > + } > + > + return 0; > +} > + > +static const struct v4l2_ioctl_ops virtio_video_dec_ioctl_ops = { > + .vidioc_querycap = virtio_video_querycap, > + > + .vidioc_enum_fmt_vid_cap = virtio_video_dec_enum_fmt_vid_cap, > + .vidioc_g_fmt_vid_cap = virtio_video_g_fmt, > + .vidioc_s_fmt_vid_cap = virtio_video_dec_s_fmt, > + > + .vidioc_enum_fmt_vid_cap_mplane = virtio_video_dec_enum_fmt_vid_cap, > + .vidioc_g_fmt_vid_cap_mplane = virtio_video_g_fmt, > + .vidioc_s_fmt_vid_cap_mplane = virtio_video_dec_s_fmt, > + > + .vidioc_enum_fmt_vid_out = virtio_video_dec_enum_fmt_vid_out, > + .vidioc_g_fmt_vid_out = virtio_video_g_fmt, > + .vidioc_s_fmt_vid_out = virtio_video_dec_s_fmt, > + > + .vidioc_enum_fmt_vid_out_mplane = virtio_video_dec_enum_fmt_vid_out, > + .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_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 = v4l2_m2m_ioctl_qbuf, > + .vidioc_dqbuf = v4l2_m2m_ioctl_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, > +}; > + > +int virtio_video_dec_init(struct video_device *vd) > +{ > + ssize_t num; > + > + vd->ioctl_ops = &virtio_video_dec_ioctl_ops; > + num = strscpy(vd->name, "stateful-decoder", sizeof(vd->name)); > + > + return 0; > +} > diff --git a/drivers/media/virtio/virtio_video_dec.h b/drivers/media/virtio/virtio_video_dec.h > new file mode 100644 > index 000000000000..0a1252248bbf > --- /dev/null > +++ b/drivers/media/virtio/virtio_video_dec.h > @@ -0,0 +1,30 @@ > +/* SPDX-License-Identifier: GPL-2.0+ */ > +/* Decoder header for virtio video driver. > + * > + * Copyright 2019 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_DEC_H > +#define _VIRTIO_VIDEO_DEC_H > + > +#include "virtio_video.h" > + > +int virtio_video_dec_init(struct video_device *vd); > +int virtio_video_dec_init_ctrls(struct virtio_video_stream *stream); > +int virtio_video_dec_init_queues(void *priv, struct vb2_queue *src_vq, > + struct vb2_queue *dst_vq); > + > +#endif /* _VIRTIO_VIDEO_DEC_H */ > diff --git a/drivers/media/virtio/virtio_video_device.c b/drivers/media/virtio/virtio_video_device.c > new file mode 100644 > index 000000000000..130e705580d1 > --- /dev/null > +++ b/drivers/media/virtio/virtio_video_device.c > @@ -0,0 +1,1079 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* Driver for virtio video device. > + * > + * Copyright 2019 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 <media/v4l2-event.h> > +#include <media/v4l2-ioctl.h> > +#include <media/videobuf2-dma-sg.h> > + > +#include "virtio_video.h" > +#include "virtio_video_dec.h" > +#include "virtio_video_enc.h" > + > +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 i; > + struct virtio_video_stream *stream = vb2_get_drv_priv(vq); > + struct video_format_info *p_info; > + > + if (*num_planes) > + return 0; > + > + if (V4L2_TYPE_IS_OUTPUT(vq->type)) > + p_info = &stream->in_info; > + else > + p_info = &stream->out_info; > + > + *num_planes = p_info->num_planes; > + > + for (i = 0; i < p_info->num_planes; i++) > + sizes[i] = p_info->plane_format[i].plane_size; > + > + return 0; > +} > + > +int virtio_video_buf_init(struct vb2_buffer *vb) > +{ > + int ret = 0; > + unsigned int i, j; > + struct scatterlist *sg; > + struct virtio_video_mem_entry *ents; > + uint32_t num_ents[VIRTIO_VIDEO_MAX_PLANES]; > + struct sg_table *sgt[VIRTIO_VIDEO_MAX_PLANES]; > + uint32_t resource_id, nents = 0; > + struct vb2_queue *vq = vb->vb2_queue; > + enum v4l2_buf_type queue_type = vq->type; > + struct virtio_video_stream *stream = vb2_get_drv_priv(vq); > + struct virtio_video_buffer *virtio_vb = to_virtio_vb(vb); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct virtio_video *vv = vvd->vv; > + > + virtio_video_resource_id_get(vv, &resource_id); > + > + if (vv->supp_non_contig) { > + for (i = 0; i < vb->num_planes; i++) { > + sgt[i] = vb2_dma_sg_plane_desc(vb, i); > + nents += sgt[i]->nents; > + } > + > + ents = kcalloc(nents, sizeof(*ents), GFP_KERNEL); > + if (!ents) > + return -ENOMEM; > + > + for (i = 0; i < vb->num_planes; ++i) { > + for_each_sg(sgt[i]->sgl, sg, sgt[i]->nents, j) { > + ents[j].addr = cpu_to_le64(vv->has_iommu > + ? sg_dma_address(sg) > + : sg_phys(sg)); > + ents[j].length = cpu_to_le32(sg->length); > + } > + num_ents[i] = sgt[i]->nents; > + } > + } else { > + nents = vb->num_planes; > + > + ents = kcalloc(nents, sizeof(*ents), GFP_KERNEL); > + if (!ents) > + return -ENOMEM; > + > + for (i = 0; i < vb->num_planes; ++i) { > + ents[i].addr = > + cpu_to_le64(vb2_dma_contig_plane_dma_addr(vb, > + i)); > + ents[i].length = cpu_to_le32(vb->planes[i].length); > + num_ents[i] = 1; > + } > + } > + > + v4l2_dbg(1, vv->debug, &vv->v4l2_dev, "mem entries:\n"); > + if (vv->debug >= 1) { > + for (i = 0; i < nents; i++) > + pr_debug("\t%03i: addr=%llx length=%u\n", i, > + ents[i].addr, ents[i].length); > + } > + > + ret = virtio_video_cmd_resource_create(vv, stream->stream_id, > + resource_id, > + to_virtio_queue_type(queue_type), > + ents, vb->num_planes, > + num_ents); > + if (ret) { > + virtio_video_resource_id_put(vvd->vv, resource_id); > + kfree(ents); > + > + return ret; > + } > + > + virtio_vb->queued = false; > + virtio_vb->resource_id = resource_id; > + > + return 0; > +} > + > +void virtio_video_buf_cleanup(struct vb2_buffer *vb) > +{ > + struct virtio_video_stream *stream = vb2_get_drv_priv(vb->vb2_queue); > + struct virtio_video_buffer *virtio_vb = to_virtio_vb(vb); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct virtio_video *vv = vvd->vv; > + > + virtio_video_resource_id_put(vv, virtio_vb->resource_id); > +} > + > +int virtio_video_querycap(struct file *file, void *fh, > + struct v4l2_capability *cap) > +{ > + struct video_device *video_dev = video_devdata(file); > + > + strncpy(cap->driver, DRIVER_NAME, sizeof(cap->driver)); > + strncpy(cap->card, video_dev->name, sizeof(cap->card)); > + snprintf(cap->bus_info, sizeof(cap->bus_info), "virtio:%s", > + video_dev->name); > + > + cap->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING; > + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; > + > + return 0; > +} > + > +int virtio_video_enum_framesizes(struct file *file, void *fh, > + struct v4l2_frmsizeenum *f) > +{ > + struct virtio_video_stream *stream = file2stream(file); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct video_format *fmt = NULL; > + struct video_format_frame *frm = NULL; > + struct virtio_video_format_frame *frame = NULL; > + int idx = f->index; > + > + fmt = find_video_format(&vvd->input_fmt_list, f->pixel_format); > + if (fmt == NULL) > + fmt = find_video_format(&vvd->output_fmt_list, f->pixel_format); > + if (fmt == NULL) > + return -EINVAL; > + > + if (idx >= fmt->desc.num_frames) > + return -EINVAL; > + > + frm = &fmt->frames[idx]; > + frame = &frm->frame; > + > + if (frame->width.min == frame->width.max && > + frame->height.min == frame->height.max) { > + f->type = V4L2_FRMSIZE_TYPE_DISCRETE; > + f->discrete.width = frame->width.min; > + f->discrete.height = frame->height.min; > + return 0; > + } > + > + f->type = V4L2_FRMSIZE_TYPE_CONTINUOUS; > + f->stepwise.min_width = frame->width.min; > + f->stepwise.max_width = frame->width.max; > + f->stepwise.min_height = frame->height.min; > + f->stepwise.max_height = frame->height.max; > + f->stepwise.step_width = frame->width.step; > + f->stepwise.step_height = frame->height.step; > + return 0; > +} > + > +static bool in_stepped_interval(uint32_t int_start, uint32_t int_end, > + uint32_t step, uint32_t point) > +{ > + if (point < int_start || point > int_end) > + return false; > + > + if (step == 0 && int_start == int_end && int_start == point) > + return true; > + > + if (step != 0 && (point - int_start) % step == 0) > + return true; > + > + return false; > +} > + > +int virtio_video_enum_framemintervals(struct file *file, void *fh, > + struct v4l2_frmivalenum *f) > +{ > + struct virtio_video_stream *stream = file2stream(file); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct video_format *fmt = NULL; > + struct video_format_frame *frm = NULL; > + struct virtio_video_format_frame *frame = NULL; > + struct virtio_video_format_range *frate = NULL; > + int idx = f->index; > + int f_idx = 0; > + > + fmt = find_video_format(&vvd->input_fmt_list, f->pixel_format); > + if (fmt == NULL) > + fmt = find_video_format(&vvd->output_fmt_list, f->pixel_format); > + if (fmt == NULL) > + return -EINVAL; > + > + for (f_idx = 0; f_idx <= fmt->desc.num_frames; f_idx++) { > + frm = &fmt->frames[f_idx]; > + frame = &frm->frame; > + if (in_stepped_interval(frame->width.min, frame->width.max, > + frame->width.step, f->width) && > + in_stepped_interval(frame->height.min, frame->height.max, > + frame->height.step, f->height)) > + break; > + } > + > + if (frame == NULL || f->index >= frame->num_rates) > + return -EINVAL; > + > + frate = &frm->frame_rates[idx]; > + if (frate->max == frate->min) { > + f->type = V4L2_FRMIVAL_TYPE_DISCRETE; > + f->discrete.numerator = 1; > + f->discrete.denominator = frate->max; > + } else { > + f->stepwise.min.numerator = 1; > + f->stepwise.min.denominator = frate->max; > + f->stepwise.max.numerator = 1; > + f->stepwise.max.denominator = frate->min; > + f->stepwise.step.numerator = 1; > + f->stepwise.step.denominator = frate->step; > + if (frate->step == 1) > + f->type = V4L2_FRMIVAL_TYPE_CONTINUOUS; > + else > + f->type = V4L2_FRMIVAL_TYPE_STEPWISE; > + } > + return 0; > +} > + > + > +int virtio_video_g_fmt(struct file *file, void *fh, struct v4l2_format *f) > +{ > + struct video_format_info *info; > + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; > + struct virtio_video_stream *stream = file2stream(file); > + > + if (!V4L2_TYPE_IS_OUTPUT(f->type)) > + info = &stream->out_info; > + else > + info = &stream->in_info; > + > + virtio_video_format_from_info(info, pix_mp); > + > + return 0; > +} > + > +int virtio_video_s_fmt(struct file *file, void *fh, struct v4l2_format *f) > +{ > + int i, ret; > + struct virtio_video_stream *stream = file2stream(file); > + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct virtio_video *vv = vvd->vv; > + struct video_format_info info; > + struct video_format_info *p_info; > + uint32_t queue; > + > + ret = virtio_video_try_fmt(stream, f); > + if (ret) > + return ret; > + > + if (V4L2_TYPE_IS_OUTPUT(f->type)) { > + virtio_video_format_fill_default_info(&info, &stream->in_info); > + queue = VIRTIO_VIDEO_QUEUE_TYPE_INPUT; > + } else { > + virtio_video_format_fill_default_info(&info, &stream->out_info); > + queue = VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT; > + } > + > + info.frame_width = pix_mp->width; > + info.frame_height = pix_mp->height; > + info.num_planes = pix_mp->num_planes; > + info.fourcc_format = pix_mp->pixelformat; > + > + for (i = 0; i < info.num_planes; i++) { > + info.plane_format[i].stride = > + pix_mp->plane_fmt[i].bytesperline; > + info.plane_format[i].plane_size = > + pix_mp->plane_fmt[i].sizeimage; > + } > + > + virtio_video_cmd_set_params(vv, stream, &info, queue); > + virtio_video_cmd_get_params(vv, stream, VIRTIO_VIDEO_QUEUE_TYPE_INPUT); > + virtio_video_cmd_get_params(vv, stream, VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); > + > + if (V4L2_TYPE_IS_OUTPUT(f->type)) > + p_info = &stream->in_info; > + else > + p_info = &stream->out_info; > + > + virtio_video_format_from_info(p_info, pix_mp); > + > + return 0; > +} > + > +int virtio_video_g_selection(struct file *file, void *fh, > + struct v4l2_selection *sel) > +{ > + struct video_format_info *info = NULL; > + struct virtio_video_stream *stream = file2stream(file); > + struct virtio_video_device *vvd = video_drvdata(file); > + > + switch (vvd->type) { > + case VIRTIO_VIDEO_DEVICE_ENCODER: > + if (!V4L2_TYPE_IS_OUTPUT(sel->type)) > + return -EINVAL; > + info = &stream->in_info; > + break; > + case VIRTIO_VIDEO_DEVICE_DECODER: > + if (V4L2_TYPE_IS_OUTPUT(sel->type)) > + return -EINVAL; > + info = &stream->out_info; > + break; > + default: > + v4l2_err(&vvd->vv->v4l2_dev, "unsupported device type\n"); > + return -EINVAL; > + } > + > + switch (sel->target) { > + case V4L2_SEL_TGT_COMPOSE_BOUNDS: > + case V4L2_SEL_TGT_COMPOSE_PADDED: > + sel->r.width = info->frame_width; > + sel->r.height = info->frame_height; > + break; > + default: > + v4l2_dbg(1, vvd->vv->debug, &vvd->vv->v4l2_dev, > + "unsupported/invalid selection target\n"); > + return -EINVAL; > + } > + > + return 0; > +} > + > +int virtio_video_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); > + struct virtio_video *vv = vvd->vv; > + int ret; > + > + 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; > + > + ret = virtio_video_cmd_set_params(vv, stream, &stream->out_info, > + VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); > + if (ret < 0) > + return -EINVAL; > + > + /* Get actual selection that was set */ > + return virtio_video_cmd_get_params(vv, stream, > + VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); > +} > + > +int virtio_video_try_fmt(struct virtio_video_stream *stream, > + struct v4l2_format *f) > +{ > + int i, idx = 0; > + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct video_format *fmt = NULL; > + bool found = false; > + struct video_format_frame *frm = NULL; > + struct virtio_video_format_frame *frame = NULL; > + > + if (V4L2_TYPE_IS_OUTPUT(f->type)) > + fmt = find_video_format(&vvd->input_fmt_list, > + pix_mp->pixelformat); > + else > + fmt = find_video_format(&vvd->output_fmt_list, > + pix_mp->pixelformat); > + > + if (!fmt) { > + if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) > + virtio_video_format_from_info(&stream->out_info, > + pix_mp); > + else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) > + virtio_video_format_from_info(&stream->in_info, > + pix_mp); > + else > + return -EINVAL; > + return 0; > + } > + > + for (i = 0; i < fmt->desc.num_frames && !found; i++) { > + frm = &fmt->frames[i]; > + frame = &frm->frame; > + if (!within_range(frame->width.min, pix_mp->width, > + frame->width.max)) > + continue; > + > + if (!within_range(frame->height.min, pix_mp->width, > + frame->height.max)) > + continue; > + idx = i; > + /* > + * Try to find a more suitable frame size. Go with the current > + * one otherwise. > + */ > + if (needs_alignment(pix_mp->width, frame->width.step)) > + continue; > + > + if (needs_alignment(pix_mp->height, frame->height.step)) > + continue; > + > + stream->current_frame = frm; > + found = true; > + } > + > + if (!found) { > + frm = &fmt->frames[idx]; > + frame = &frm->frame; > + pix_mp->width = clamp(pix_mp->width, frame->width.min, > + frame->width.max); > + if (frame->width.step != 0) > + pix_mp->width = ALIGN(pix_mp->width, frame->width.step); > + > + pix_mp->height = clamp(pix_mp->height, frame->height.min, > + frame->height.max); > + if (frame->height.step != 0) > + pix_mp->height = ALIGN(pix_mp->height, > + frame->height.step); > + stream->current_frame = frm; > + } > + > + return 0; > +} > + > +static int virtio_video_queue_free(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + enum v4l2_buf_type type) > +{ > + int ret; > + uint32_t queue_type = to_virtio_queue_type(type); > + > + ret = virtio_video_cmd_resource_destroy_all(vv, stream, > + queue_type); > + if (ret) > + v4l2_warn(&vv->v4l2_dev, > + "failed to destroy resources\n"); > + > + return 0; > +} > + > +int virtio_video_reqbufs(struct file *file, void *priv, > + struct v4l2_requestbuffers *rb) > +{ > + struct virtio_video_stream *stream = file2stream(file); > + struct v4l2_m2m_ctx *m2m_ctx = stream->fh.m2m_ctx; > + struct vb2_queue *vq = v4l2_m2m_get_vq(m2m_ctx, rb->type); > + struct virtio_video_device *vvd = video_drvdata(file); > + > + if (rb->count == 0) > + virtio_video_queue_free(vvd->vv, stream, vq->type); > + > + return v4l2_m2m_reqbufs(file, m2m_ctx, rb); > +} > + > +int virtio_video_subscribe_event(struct v4l2_fh *fh, > + const struct v4l2_event_subscription *sub) > +{ > + switch (sub->type) { > + case V4L2_EVENT_SOURCE_CHANGE: > + return v4l2_src_change_event_subscribe(fh, sub); > + default: > + return -EINVAL; > + } > +} > + > +void virtio_video_queue_eos_event(struct virtio_video_stream *stream) > +{ > + static const struct v4l2_event eos_event = { > + .type = V4L2_EVENT_EOS > + }; > + > + v4l2_event_queue_fh(&stream->fh, &eos_event); > +} > + > +void virtio_video_queue_res_chg_event(struct virtio_video_stream *stream) > +{ > + static const struct v4l2_event ev_src_ch = { > + .type = V4L2_EVENT_SOURCE_CHANGE, > + .u.src_change.changes = > + V4L2_EVENT_SRC_CH_RESOLUTION, > + }; > + > + v4l2_event_queue_fh(&stream->fh, &ev_src_ch); > +} > + > +void virtio_video_mark_drain_complete(struct virtio_video_stream *stream, > + struct vb2_v4l2_buffer *v4l2_vb) > +{ > + struct vb2_buffer *vb2_buf; > + > + v4l2_vb->flags |= V4L2_BUF_FLAG_LAST; > + > + vb2_buf = &v4l2_vb->vb2_buf; > + vb2_buf->planes[0].bytesused = 0; > + > + v4l2_m2m_buf_done(v4l2_vb, VB2_BUF_STATE_DONE); > + stream->state = STREAM_STATE_STOPPED; > +} > + > +void virtio_video_buf_done(struct virtio_video_buffer *virtio_vb, > + uint32_t flags, uint64_t timestamp, uint32_t size) > +{ > + int i; > + enum vb2_buffer_state done_state = VB2_BUF_STATE_DONE; > + struct vb2_v4l2_buffer *v4l2_vb = &virtio_vb->v4l2_m2m_vb.vb; > + struct vb2_buffer *vb = &v4l2_vb->vb2_buf; > + struct vb2_queue *vb2_queue = vb->vb2_queue; > + struct virtio_video_stream *stream = vb2_get_drv_priv(vb2_queue); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct video_format_info *p_info; > + > + virtio_vb->queued = false; > + > + if (flags & VIRTIO_VIDEO_BUFFER_FLAG_ERR) > + done_state = VB2_BUF_STATE_ERROR; > + > + if (flags & VIRTIO_VIDEO_BUFFER_FLAG_IFRAME) > + v4l2_vb->flags |= V4L2_BUF_FLAG_KEYFRAME; > + > + if (flags & VIRTIO_VIDEO_BUFFER_FLAG_BFRAME) > + v4l2_vb->flags |= V4L2_BUF_FLAG_BFRAME; > + > + if (flags & VIRTIO_VIDEO_BUFFER_FLAG_PFRAME) > + v4l2_vb->flags |= V4L2_BUF_FLAG_PFRAME; > + > + if (flags & VIRTIO_VIDEO_BUFFER_FLAG_EOS) { > + v4l2_vb->flags |= V4L2_BUF_FLAG_LAST; > + stream->state = STREAM_STATE_STOPPED; > + virtio_video_queue_eos_event(stream); > + } > + > + if (!V4L2_TYPE_IS_OUTPUT(vb2_queue->type)) { > + switch (vvd->type) { > + case VIRTIO_VIDEO_DEVICE_ENCODER: > + vb->planes[0].bytesused = size; > + break; > + case VIRTIO_VIDEO_DEVICE_DECODER: > + p_info = &stream->out_info; > + for (i = 0; i < p_info->num_planes; i++) > + vb->planes[i].bytesused = > + p_info->plane_format[i].plane_size; > + break; > + } > + > + vb->timestamp = timestamp; > + } > + > + v4l2_m2m_buf_done(v4l2_vb, done_state); > +} > + > +static void virtio_video_worker(struct work_struct *work) > +{ > + unsigned int i; > + int ret; > + struct vb2_buffer *vb2_buf; > + struct vb2_v4l2_buffer *src_vb, *dst_vb; > + struct virtio_video_buffer *virtio_vb; > + struct virtio_video_stream *stream = work2stream(work); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct vb2_queue *src_vq = > + v4l2_m2m_get_vq(stream->fh.m2m_ctx, > + V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE); > + struct vb2_queue *dst_vq = > + v4l2_m2m_get_vq(stream->fh.m2m_ctx, > + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE); > + struct virtio_video *vv = vvd->vv; > + uint32_t data_size[VB2_MAX_PLANES] = {0}; > + > + mutex_lock(dst_vq->lock); > + for (;;) { > + dst_vb = v4l2_m2m_next_dst_buf(stream->fh.m2m_ctx); > + if (dst_vb == NULL) > + break; > + > + vb2_buf = &dst_vb->vb2_buf; > + virtio_vb = to_virtio_vb(vb2_buf); > + > + for (i = 0; i < vb2_buf->num_planes; ++i) > + data_size[i] = vb2_buf->planes[i].bytesused; > + > + ret = virtio_video_cmd_resource_queue > + (vv, stream->stream_id, virtio_vb, data_size, > + vb2_buf->num_planes, VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, > + "failed to queue a dst buffer\n"); > + v4l2_m2m_job_finish(vvd->m2m_dev, stream->fh.m2m_ctx); > + mutex_unlock(dst_vq->lock); > + return; > + } > + > + virtio_vb->queued = true; > + stream->dst_cleared = false; > + dst_vb = v4l2_m2m_dst_buf_remove(stream->fh.m2m_ctx); > + } > + mutex_unlock(dst_vq->lock); > + > + mutex_lock(src_vq->lock); > + for (;;) { > + if (stream->state == STREAM_STATE_DRAIN) > + break; > + > + src_vb = v4l2_m2m_next_src_buf(stream->fh.m2m_ctx); > + if (src_vb == NULL) > + break; > + > + vb2_buf = &src_vb->vb2_buf; > + virtio_vb = to_virtio_vb(vb2_buf); > + > + for (i = 0; i < vb2_buf->num_planes; ++i) > + data_size[i] = vb2_buf->planes[i].bytesused; > + > + ret = virtio_video_cmd_resource_queue > + (vv, stream->stream_id, virtio_vb, data_size, > + vb2_buf->num_planes, VIRTIO_VIDEO_QUEUE_TYPE_INPUT); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, > + "failed to queue an src buffer\n"); > + v4l2_m2m_job_finish(vvd->m2m_dev, stream->fh.m2m_ctx); > + mutex_unlock(src_vq->lock); > + return; > + } > + > + virtio_vb->queued = true; > + stream->src_cleared = false; > + src_vb = v4l2_m2m_src_buf_remove(stream->fh.m2m_ctx); > + } > + mutex_unlock(src_vq->lock); > + > + v4l2_m2m_job_finish(vvd->m2m_dev, stream->fh.m2m_ctx); > +} > + > +static int virtio_video_device_open(struct file *file) > +{ > + int ret; > + uint32_t stream_id; > + char name[TASK_COMM_LEN]; > + struct virtio_video_stream *stream; > + struct video_format *default_fmt; > + enum virtio_video_format format; > + struct video_device *video_dev = video_devdata(file); > + struct virtio_video_device *vvd = video_drvdata(file); > + struct virtio_video *vv = vvd->vv; > + > + switch (vvd->type) { > + case VIRTIO_VIDEO_DEVICE_ENCODER: > + default_fmt = list_first_entry_or_null(&vvd->output_fmt_list, > + struct video_format, > + formats_list_entry); > + break; > + case VIRTIO_VIDEO_DEVICE_DECODER: > + default_fmt = list_first_entry_or_null(&vvd->input_fmt_list, > + struct video_format, > + formats_list_entry); > + break; > + default: > + v4l2_err(&vv->v4l2_dev, "unsupported device type\n"); > + return -EIO; > + } > + > + if (!default_fmt) { > + v4l2_err(&vv->v4l2_dev, "device failed to start\n"); > + return -EIO; > + } > + > + stream = kzalloc(sizeof(*stream), GFP_KERNEL); > + if (!stream) > + return -ENOMEM; > + > + get_task_comm(name, current); > + format = virtio_video_v4l2_format_to_virtio(default_fmt->desc.format); > + virtio_video_stream_id_get(vv, stream, &stream_id); > + ret = virtio_video_cmd_stream_create(vv, stream_id, format, name); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to create stream\n"); > + goto err_stream_create; > + } > + > + stream->video_dev = video_dev; > + stream->stream_id = stream_id; > + stream->state = STREAM_STATE_IDLE; > + > + ret = virtio_video_cmd_get_params(vv, stream, > + VIRTIO_VIDEO_QUEUE_TYPE_INPUT); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to get stream in params\n"); > + goto err_init_ctrls; > + } > + > + ret = virtio_video_cmd_get_params(vv, stream, > + VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to get stream out params\n"); > + goto err_init_ctrls; > + } > + > + ret = virtio_video_cmd_get_control(vv, stream, > + VIRTIO_VIDEO_CONTROL_PROFILE); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to get stream profile\n"); > + goto err_init_ctrls; > + } > + > + ret = virtio_video_cmd_get_control(vv, stream, > + VIRTIO_VIDEO_CONTROL_LEVEL); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to get stream level\n"); > + goto err_init_ctrls; > + } > + > + ret = virtio_video_cmd_get_control(vv, stream, > + VIRTIO_VIDEO_CONTROL_BITRATE); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to get stream bitrate\n"); > + goto err_init_ctrls; > + } > + > + mutex_init(&stream->vq_mutex); > + INIT_WORK(&stream->work, virtio_video_worker); > + v4l2_fh_init(&stream->fh, video_dev); > + stream->fh.ctrl_handler = &stream->ctrl_handler; > + > + switch (vvd->type) { > + case VIRTIO_VIDEO_DEVICE_ENCODER: > + stream->fh.m2m_ctx = > + v4l2_m2m_ctx_init(vvd->m2m_dev, stream, > + &virtio_video_enc_init_queues); > + break; > + case VIRTIO_VIDEO_DEVICE_DECODER: > + stream->fh.m2m_ctx = > + v4l2_m2m_ctx_init(vvd->m2m_dev, stream, > + &virtio_video_dec_init_queues); > + break; > + default: > + v4l2_err(&vv->v4l2_dev, "unsupported device type\n"); > + goto err_stream_create; > + } > + > + v4l2_m2m_set_src_buffered(stream->fh.m2m_ctx, true); > + v4l2_m2m_set_dst_buffered(stream->fh.m2m_ctx, true); > + file->private_data = &stream->fh; > + v4l2_fh_add(&stream->fh); > + > + switch (vvd->type) { > + case VIRTIO_VIDEO_DEVICE_ENCODER: > + ret = virtio_video_enc_init_ctrls(stream); > + break; > + case VIRTIO_VIDEO_DEVICE_DECODER: > + ret = virtio_video_dec_init_ctrls(stream); > + break; > + default: > + ret = 0; > + break; > + } > + > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to init controls\n"); > + goto err_init_ctrls; > + } > + return 0; > + > +err_init_ctrls: > + v4l2_fh_del(&stream->fh); > + v4l2_fh_exit(&stream->fh); > + mutex_lock(video_dev->lock); > + v4l2_m2m_ctx_release(stream->fh.m2m_ctx); > + mutex_unlock(video_dev->lock); > +err_stream_create: > + virtio_video_stream_id_put(vv, stream_id); > + kfree(stream); > + > + return ret; > +} > + > +static int virtio_video_device_release(struct file *file) > +{ > + struct virtio_video_stream *stream = file2stream(file); > + struct video_device *video_dev = video_devdata(file); > + struct virtio_video_device *vvd = video_drvdata(file); > + struct virtio_video *vv = vvd->vv; > + > + v4l2_fh_del(&stream->fh); > + v4l2_fh_exit(&stream->fh); > + mutex_lock(video_dev->lock); > + v4l2_m2m_ctx_release(stream->fh.m2m_ctx); > + mutex_unlock(video_dev->lock); > + > + virtio_video_cmd_stream_destroy(vv, stream->stream_id); > + virtio_video_stream_id_put(vv, stream->stream_id); > + > + kfree(stream); > + > + return 0; > +} > + > +static const struct v4l2_file_operations virtio_video_device_fops = { > + .owner = THIS_MODULE, > + .open = virtio_video_device_open, > + .release = virtio_video_device_release, > + .poll = v4l2_m2m_fop_poll, > + .unlocked_ioctl = video_ioctl2, > + .mmap = v4l2_m2m_fop_mmap, > +}; > + > +static void virtio_video_device_run(void *priv) > +{ > + struct virtio_video_stream *stream = priv; > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + > + queue_work(vvd->workqueue, &stream->work); > +} > + > +static int virtio_video_device_job_ready(void *priv) > +{ > + struct virtio_video_stream *stream = priv; > + > + if (stream->state == STREAM_STATE_STOPPED) > + return 0; > + > + if (v4l2_m2m_num_src_bufs_ready(stream->fh.m2m_ctx) > 0 || > + v4l2_m2m_num_dst_bufs_ready(stream->fh.m2m_ctx) > 0) > + return 1; > + > + return 0; > +} > + > +static void virtio_video_device_job_abort(void *priv) > +{ > + struct virtio_video_stream *stream = priv; > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + > + v4l2_m2m_job_finish(vvd->m2m_dev, stream->fh.m2m_ctx); > +} > + > +static const struct v4l2_m2m_ops virtio_video_device_m2m_ops = { > + .device_run = virtio_video_device_run, > + .job_ready = virtio_video_device_job_ready, > + .job_abort = virtio_video_device_job_abort, > +}; > + > +static int virtio_video_device_register(struct virtio_video_device *vvd) > +{ > + int ret = 0; > + struct video_device *vd = NULL; > + struct virtio_video *vv = NULL; > + > + if (!vvd) > + return -EINVAL; > + > + vd = &vvd->video_dev; > + vv = vvd->vv; > + > + switch (vvd->type) { > + case VIRTIO_VIDEO_DEVICE_ENCODER: > + ret = virtio_video_enc_init(vd); > + break; > + case VIRTIO_VIDEO_DEVICE_DECODER: > + ret = virtio_video_dec_init(vd); > + break; > + default: > + v4l2_err(&vv->v4l2_dev, "unknown device type\n"); > + return -EINVAL; > + } > + > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to init device\n"); > + return ret; > + } > + > + ret = video_register_device(vd, VFL_TYPE_GRABBER, 0); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to register video device\n"); > + return ret; > + } > + > + vvd->workqueue = alloc_ordered_workqueue(vd->name, > + WQ_MEM_RECLAIM | WQ_FREEZABLE); > + if (!vvd->workqueue) { > + v4l2_err(&vv->v4l2_dev, "failed to create a workqueue"); > + video_unregister_device(vd); > + return -ENOMEM; > + } > + > + list_add(&vvd->devices_list_entry, &vv->devices_list); > + v4l2_info(&vv->v4l2_dev, "Device '%s' registered as /dev/video%d\n", > + vd->name, vd->num); > + > + return 0; > +} > + > +static void virtio_video_device_unregister(struct virtio_video_device *vvd) > +{ > + if (!vvd) > + return; > + > + list_del(&vvd->devices_list_entry); > + flush_workqueue(vvd->workqueue); > + destroy_workqueue(vvd->workqueue); > + video_unregister_device(&vvd->video_dev); > +} > + > +static struct virtio_video_device * > +virtio_video_device_create(struct virtio_video *vv) > +{ > + struct device *dev = NULL; > + struct video_device *vd = NULL; > + struct v4l2_m2m_dev *m2m_dev = NULL; > + struct virtio_video_device *vvd = NULL; > + > + if (!vv) > + return ERR_PTR(-EINVAL); > + > + dev = &vv->vdev->dev; > + > + vvd = devm_kzalloc(dev, sizeof(*vvd), GFP_KERNEL); > + if (!vvd) > + return ERR_PTR(-ENOMEM); > + > + m2m_dev = v4l2_m2m_init(&virtio_video_device_m2m_ops); > + if (IS_ERR(m2m_dev)) { > + v4l2_err(&vv->v4l2_dev, "failed to init m2m device\n"); > + goto err; > + } > + > + vvd->vv = vv; > + vvd->m2m_dev = m2m_dev; > + mutex_init(&vvd->video_dev_mutex); > + vd = &vvd->video_dev; > + vd->lock = &vvd->video_dev_mutex; > + vd->v4l2_dev = &vv->v4l2_dev; > + vd->vfl_dir = VFL_DIR_M2M; > + vd->ioctl_ops = NULL; > + vd->fops = &virtio_video_device_fops; > + vd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE; > + vd->release = video_device_release_empty; > + > + /* Use the selection API instead */ > + v4l2_disable_ioctl(vd, VIDIOC_CROPCAP); > + v4l2_disable_ioctl(vd, VIDIOC_G_CROP); > + v4l2_disable_ioctl(vd, VIDIOC_S_CROP); > + > + video_set_drvdata(vd, vvd); > + > + INIT_LIST_HEAD(&vvd->input_fmt_list); > + INIT_LIST_HEAD(&vvd->output_fmt_list); > + INIT_LIST_HEAD(&vvd->controls_fmt_list); > + > + vvd->num_output_fmts = 0; > + vvd->num_input_fmts = 0; > + > + switch (vv->vdev->id.device) { > + case VIRTIO_ID_VIDEO_ENC: > + vvd->type = VIRTIO_VIDEO_DEVICE_ENCODER; > + break; > + case VIRTIO_ID_VIDEO_DEC: > + default: > + vvd->type = VIRTIO_VIDEO_DEVICE_DECODER; > + break; > + } > + > + return vvd; > + > +err: > + devm_kfree(dev, vvd); > + > + return ERR_CAST(m2m_dev); > +} > + > +void virtio_video_device_destroy(struct virtio_video_device *vvd) > +{ > + if (!vvd) > + return; > + > + v4l2_m2m_release(vvd->m2m_dev); > + devm_kfree(&vvd->vv->vdev->dev, vvd); > +} > + > +int virtio_video_device_init(struct virtio_video *vv, > + void *input_buf, void *output_buf) > +{ > + int ret = 0; > + struct virtio_video_device *vvd = NULL; > + > + if (!vv || !input_buf || !output_buf) > + return -EINVAL; > + > + > + vvd = virtio_video_device_create(vv); > + if (IS_ERR(vvd)) { > + v4l2_err(&vv->v4l2_dev, > + "failed to create virtio video device\n"); > + ret = PTR_ERR(vvd); > + goto failed; > + } > + > + ret = virtio_video_parse_virtio_capability(vvd, input_buf, output_buf); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to parse a function\n"); > + virtio_video_device_destroy(vvd); > + ret = -EINVAL; > + goto failed; > + } > + > + ret = virtio_video_parse_virtio_control(vvd); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to query controls\n"); > + virtio_video_clean_capability(vvd); > + virtio_video_device_destroy(vvd); > + goto failed; > + } > + > + ret = virtio_video_device_register(vvd); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, > + "failed to init virtio video device\n"); > + virtio_video_clean_control(vvd); > + virtio_video_clean_capability(vvd); > + virtio_video_device_destroy(vvd); > + goto failed; > + } > + > + return 0; > + > +failed: > + virtio_video_device_deinit(vv); > + > + return ret; > +} > + > +void virtio_video_device_deinit(struct virtio_video *vv) > +{ > + struct virtio_video_device *vvd = NULL, *tmp = NULL; > + > + list_for_each_entry_safe(vvd, tmp, &vv->devices_list, > + devices_list_entry) { > + virtio_video_device_unregister(vvd); > + virtio_video_clean_control(vvd); > + virtio_video_clean_capability(vvd); > + virtio_video_device_destroy(vvd); > + } > +} > diff --git a/drivers/media/virtio/virtio_video_driver.c b/drivers/media/virtio/virtio_video_driver.c > new file mode 100644 > index 000000000000..2d4fd7671f4f > --- /dev/null > +++ b/drivers/media/virtio/virtio_video_driver.c > @@ -0,0 +1,315 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* Driver for virtio video device. > + * > + * Copyright 2019 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/module.h> > +#include <linux/version.h> > +#include <linux/dma-mapping.h> > + > +#include "virtio_video.h" > + > +static unsigned int debug; > +module_param(debug, uint, 0644); > + > +static unsigned int use_dma_mem; > +module_param(use_dma_mem, uint, 0644); > +MODULE_PARM_DESC(use_dma_mem, "Try to allocate buffers from the DMA zone"); > + > +static void virtio_video_init_vq(struct virtio_video_queue *vvq, > + void (*work_func)(struct work_struct *work)) > +{ > + spin_lock_init(&vvq->qlock); > + init_waitqueue_head(&vvq->ack_queue); > + INIT_WORK(&vvq->dequeue_work, work_func); > +} > + > +static void *dma_phys_alloc(struct device *dev, size_t size, > + dma_addr_t *dma_handle, gfp_t gfp, > + unsigned long attrs) > +{ > + void *ret; > + > + ret = (void *)__get_free_pages(gfp, get_order(size)); > + if (ret) > + *dma_handle = virt_to_phys(ret) - PFN_PHYS(dev->dma_pfn_offset); > + > + return ret; > +} > + > +static void dma_phys_free(struct device *dev, size_t size, > + void *cpu_addr, dma_addr_t dma_addr, > + unsigned long attrs) > +{ > + free_pages((unsigned long)cpu_addr, get_order(size)); > +} > + > +static dma_addr_t dma_phys_map_page(struct device *dev, struct page *page, > + unsigned long offset, size_t size, > + enum dma_data_direction dir, > + unsigned long attrs) > +{ > + return page_to_phys(page) + offset - PFN_PHYS(dev->dma_pfn_offset); > +} > + > +static int dma_phys_map_sg(struct device *dev, struct scatterlist *sgl, > + int nents, enum dma_data_direction dir, > + unsigned long attrs) > +{ > + int i; > + struct scatterlist *sg; > + > + for_each_sg(sgl, sg, nents, i) { > + dma_addr_t offset = PFN_PHYS(dev->dma_pfn_offset); > + void *va; > + > + BUG_ON(!sg_page(sg)); > + va = sg_virt(sg); > + sg_dma_address(sg) = (dma_addr_t)virt_to_phys(va) - offset; > + sg_dma_len(sg) = sg->length; > + } > + > + return nents; > +} > + > +const struct dma_map_ops dma_phys_ops = { > + .alloc = dma_phys_alloc, > + .free = dma_phys_free, > + .map_page = dma_phys_map_page, > + .map_sg = dma_phys_map_sg, > +}; > + > +static int virtio_video_query_cap_resp_buf(struct virtio_video *vv, void > + **resp_buf, int queue_type) > +{ > + int ret = 0; > + int resp_size = vv->max_caps_len; > + > + *resp_buf = kzalloc(vv->max_caps_len, GFP_KERNEL); > + if (IS_ERR(*resp_buf)) { > + ret = PTR_ERR(*resp_buf); > + goto err; > + } > + > + vv->got_caps = false; > + ret = virtio_video_query_capability(vv, *resp_buf, resp_size, > + queue_type); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to query capability\n"); > + goto err; > + } > + > + ret = wait_event_timeout(vv->wq, vv->got_caps, 5 * HZ); > + if (ret == 0) { > + v4l2_err(&vv->v4l2_dev, "timed out waiting for get caps\n"); > + ret = -EIO; > + goto err; > + } > + > + return 0; > +err: > + return ret; > +} > + > +static int virtio_video_init(struct virtio_video *vv) > +{ > + int ret = 0; > + void *input_resp_buf = NULL; > + void *output_resp_buf = NULL; > + > + if (!vv) > + return -EINVAL; > + > + ret = virtio_video_query_cap_resp_buf(vv, &input_resp_buf, > + VIRTIO_VIDEO_QUEUE_TYPE_INPUT); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to get input caps\n"); > + goto err; > + } > + > + ret = virtio_video_query_cap_resp_buf(vv, &output_resp_buf, > + VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to get output caps\n"); > + goto err; > + } > + > + ret = virtio_video_device_init(vv, input_resp_buf, output_resp_buf); > + if (ret) > + v4l2_err(&vv->v4l2_dev, "failed to initialize devices\n"); > + > +err: > + kfree(input_resp_buf); > + kfree(output_resp_buf); > + > + return ret; > +}; > + > +static int virtio_video_probe(struct virtio_device *vdev) > +{ > + int ret; > + struct virtio_video *vv; > + struct virtqueue *vqs[2]; > + struct device *dev = &vdev->dev; > + > + static const char * const names[] = { "control", "event" }; > + static vq_callback_t *callbacks[] = { > + virtio_video_cmd_ack, > + virtio_video_event_ack > + }; > + > + if (!virtio_has_feature(vdev, VIRTIO_VIDEO_F_RESOURCE_GUEST_PAGES)) { > + dev_err(dev, "device must support guest allocated buffers\n"); > + return -ENODEV; > + } > + > + vv = devm_kzalloc(dev, sizeof(*vv), GFP_KERNEL); > + if (!vv) > + return -ENOMEM; > + > + vv->vdev = vdev; > + vv->debug = debug; > + vv->use_dma_mem = use_dma_mem; > + vdev->priv = vv; > + > + spin_lock_init(&vv->resource_idr_lock); > + idr_init(&vv->resource_idr); > + spin_lock_init(&vv->stream_idr_lock); > + idr_init(&vv->stream_idr); > + > + init_waitqueue_head(&vv->wq); > + > + if (virtio_has_feature(vdev, VIRTIO_VIDEO_F_RESOURCE_NON_CONTIG)) > + vv->supp_non_contig = true; > + > + vv->has_iommu = !virtio_has_iommu_quirk(vdev); > + if (!vv->has_iommu) > + set_dma_ops(dev, &dma_phys_ops); > + > + dev_set_name(dev, "%s.%i", DRIVER_NAME, vdev->index); > + ret = v4l2_device_register(dev, &vv->v4l2_dev); > + if (ret) > + goto err_v4l2_reg; > + > + virtio_video_init_vq(&vv->commandq, virtio_video_dequeue_cmd_func); > + virtio_video_init_vq(&vv->eventq, virtio_video_dequeue_event_func); > + > + ret = virtio_find_vqs(vdev, 2, vqs, callbacks, names, NULL); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to find virt queues\n"); > + goto err_vqs; > + } > + > + vv->commandq.vq = vqs[0]; > + vv->eventq.vq = vqs[1]; > + > + ret = virtio_video_alloc_vbufs(vv); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to alloc vbufs\n"); > + goto err_vbufs; > + } > + > + virtio_cread(vdev, struct virtio_video_config, max_caps_length, > + &vv->max_caps_len); > + if (!vv->max_caps_len) { > + v4l2_err(&vv->v4l2_dev, "max_caps_len is zero\n"); > + ret = -EINVAL; > + goto err_config; > + } > + > + virtio_cread(vdev, struct virtio_video_config, max_resp_length, > + &vv->max_resp_len); > + if (!vv->max_resp_len) { > + v4l2_err(&vv->v4l2_dev, "max_resp_len is zero\n"); > + ret = -EINVAL; > + goto err_config; > + } > + > + ret = virtio_video_alloc_events(vv, vv->eventq.vq->num_free); > + if (ret) > + goto err_events; > + > + virtio_device_ready(vdev); > + vv->vq_ready = true; > + vv->got_caps = false; > + > + INIT_LIST_HEAD(&vv->devices_list); > + > + ret = virtio_video_init(vv); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, > + "failed to init virtio video\n"); > + goto err_init; > + } > + > + return 0; > + > +err_init: > +err_events: > +err_config: > + virtio_video_free_vbufs(vv); > +err_vbufs: > + vdev->config->del_vqs(vdev); > +err_vqs: > + v4l2_device_unregister(&vv->v4l2_dev); > +err_v4l2_reg: > + devm_kfree(&vdev->dev, vv); > + > + return ret; > +} > + > +static void virtio_video_remove(struct virtio_device *vdev) > +{ > + struct virtio_video *vv = vdev->priv; > + > + virtio_video_device_deinit(vv); > + virtio_video_free_vbufs(vv); > + vdev->config->del_vqs(vdev); > + v4l2_device_unregister(&vv->v4l2_dev); > + devm_kfree(&vdev->dev, vv); > +} > + > +static struct virtio_device_id id_table[] = { > + { VIRTIO_ID_VIDEO_DEC, VIRTIO_DEV_ANY_ID }, > + { VIRTIO_ID_VIDEO_ENC, VIRTIO_DEV_ANY_ID }, > + { 0 }, > +}; > + > +static unsigned int features[] = { > + VIRTIO_VIDEO_F_RESOURCE_GUEST_PAGES, > + VIRTIO_VIDEO_F_RESOURCE_NON_CONTIG, > +}; > + > +static struct virtio_driver virtio_video_driver = { > + .feature_table = features, > + .feature_table_size = ARRAY_SIZE(features), > + .driver.name = DRIVER_NAME, > + .driver.owner = THIS_MODULE, > + .id_table = id_table, > + .probe = virtio_video_probe, > + .remove = virtio_video_remove, > +}; > + > +module_virtio_driver(virtio_video_driver); > + > +MODULE_DEVICE_TABLE(virtio, id_table); > +MODULE_DESCRIPTION("virtio video driver"); > +MODULE_AUTHOR("Dmitry Sepp <dmitry.sepp@xxxxxxxxxxxxxxx>"); > +MODULE_AUTHOR("Kiran Pawar <kiran.pawar@xxxxxxxxxxxxxxx>"); > +MODULE_AUTHOR("Nikolay Martyanov <nikolay.martyanov@xxxxxxxxxxxxxxx>"); > +MODULE_AUTHOR("Samiullah Khawaja <samiullah.khawaja@xxxxxxxxxxxxxxx>"); > +MODULE_LICENSE("GPL"); > diff --git a/drivers/media/virtio/virtio_video_enc.c b/drivers/media/virtio/virtio_video_enc.c > new file mode 100644 > index 000000000000..d9bd5f293900 > --- /dev/null > +++ b/drivers/media/virtio/virtio_video_enc.c > @@ -0,0 +1,569 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* Encoder for virtio video device. > + * > + * Copyright 2019 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 <media/v4l2-event.h> > +#include <media/v4l2-ioctl.h> > + > +#include "virtio_video.h" > + > +static void virtio_video_enc_buf_queue(struct vb2_buffer *vb) > +{ > + struct vb2_v4l2_buffer *v4l2_vb = to_vb2_v4l2_buffer(vb); > + struct virtio_video_stream *stream = vb2_get_drv_priv(vb->vb2_queue); > + > + v4l2_m2m_buf_queue(stream->fh.m2m_ctx, v4l2_vb); > + > +} > + > +static int virtio_video_enc_start_streaming(struct vb2_queue *vq, > + unsigned int count) > +{ > + struct virtio_video_stream *stream = vb2_get_drv_priv(vq); > + bool input_queue = V4L2_TYPE_IS_OUTPUT(vq->type); > + > + if (stream->state == STREAM_STATE_INIT || > + (!input_queue && stream->state == STREAM_STATE_RESET) || > + (input_queue && stream->state == STREAM_STATE_STOPPED)) > + stream->state = STREAM_STATE_RUNNING; > + > + return 0; > +} > + > +static void virtio_video_enc_stop_streaming(struct vb2_queue *vq) > +{ > + int ret, queue_type; > + bool *cleared; > + bool is_v4l2_output = V4L2_TYPE_IS_OUTPUT(vq->type); > + struct virtio_video_stream *stream = vb2_get_drv_priv(vq); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct virtio_video *vv = vvd->vv; > + struct vb2_v4l2_buffer *v4l2_vb; > + > + if (is_v4l2_output) { > + cleared = &stream->src_cleared; > + queue_type = VIRTIO_VIDEO_QUEUE_TYPE_INPUT; > + } else { > + cleared = &stream->dst_cleared; > + queue_type = VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT; > + } > + > + ret = virtio_video_cmd_queue_clear(vv, stream, queue_type); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to clear queue\n"); > + return; > + } > + > + ret = wait_event_timeout(vv->wq, *cleared, 5 * HZ); > + if (ret == 0) { > + v4l2_err(&vv->v4l2_dev, "timed out waiting for queue clear\n"); > + return; > + } > + > + for (;;) { > + if (is_v4l2_output) > + v4l2_vb = v4l2_m2m_src_buf_remove(stream->fh.m2m_ctx); > + else > + v4l2_vb = v4l2_m2m_dst_buf_remove(stream->fh.m2m_ctx); > + if (!v4l2_vb) > + break; > + v4l2_m2m_buf_done(v4l2_vb, VB2_BUF_STATE_ERROR); > + } > + > + if (is_v4l2_output) > + stream->state = STREAM_STATE_STOPPED; > + else > + stream->state = STREAM_STATE_RESET; > +} > + > +static const struct vb2_ops virtio_video_enc_qops = { > + .queue_setup = virtio_video_queue_setup, > + .buf_init = virtio_video_buf_init, > + .buf_cleanup = virtio_video_buf_cleanup, > + .buf_queue = virtio_video_enc_buf_queue, > + .start_streaming = virtio_video_enc_start_streaming, > + .stop_streaming = virtio_video_enc_stop_streaming, > + .wait_prepare = vb2_ops_wait_prepare, > + .wait_finish = vb2_ops_wait_finish, > +}; > + > +static int virtio_video_enc_s_ctrl(struct v4l2_ctrl *ctrl) > +{ > + int ret = 0; > + struct virtio_video_stream *stream = ctrl2stream(ctrl); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct virtio_video *vv = vvd->vv; > + uint32_t control, value; > + > + control = virtio_video_v4l2_control_to_virtio(ctrl->id); > + > + switch (ctrl->id) { > + case V4L2_CID_MPEG_VIDEO_BITRATE: > + ret = virtio_video_cmd_set_control(vv, stream->stream_id, > + control, ctrl->val); > + break; > + case V4L2_CID_MPEG_VIDEO_H264_LEVEL: > + value = virtio_video_v4l2_level_to_virtio(ctrl->val); > + ret = virtio_video_cmd_set_control(vv, stream->stream_id, > + control, value); > + break; > + case V4L2_CID_MPEG_VIDEO_H264_PROFILE: > + value = virtio_video_v4l2_profile_to_virtio(ctrl->val); > + ret = virtio_video_cmd_set_control(vv, stream->stream_id, > + control, value); > + break; > + default: > + ret = -EINVAL; > + break; > + } > + > + return ret; > +} > + > +static int virtio_video_enc_g_volatile_ctrl(struct v4l2_ctrl *ctrl) > +{ > + int ret = 0; > + struct virtio_video_stream *stream = ctrl2stream(ctrl); > + > + switch (ctrl->id) { > + case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: > + if (stream->state >= STREAM_STATE_INIT) > + ctrl->val = stream->in_info.min_buffers; > + else > + ctrl->val = 0; > + break; > + default: > + ret = -EINVAL; > + } > + > + return ret; > +} > + > +static const struct v4l2_ctrl_ops virtio_video_enc_ctrl_ops = { > + .g_volatile_ctrl = virtio_video_enc_g_volatile_ctrl, > + .s_ctrl = virtio_video_enc_s_ctrl, > +}; > + > +int virtio_video_enc_init_ctrls(struct virtio_video_stream *stream) > +{ > + struct v4l2_ctrl *ctrl; > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct virtio_video *vv = vvd->vv; > + struct video_control_format *c_fmt = NULL; > + > + v4l2_ctrl_handler_init(&stream->ctrl_handler, 1); > + > + ctrl = v4l2_ctrl_new_std(&stream->ctrl_handler, > + &virtio_video_enc_ctrl_ops, > + V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, > + MIN_BUFS_MIN, MIN_BUFS_MAX, MIN_BUFS_STEP, > + MIN_BUFS_DEF); > + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; > + > + list_for_each_entry(c_fmt, &vvd->controls_fmt_list, > + controls_list_entry) { > + switch (c_fmt->format) { > + case V4L2_PIX_FMT_H264: > + if (c_fmt->profile) > + v4l2_ctrl_new_std_menu > + (&stream->ctrl_handler, > + &virtio_video_enc_ctrl_ops, > + V4L2_CID_MPEG_VIDEO_H264_PROFILE, > + c_fmt->profile->max, > + c_fmt->profile->skip_mask, > + c_fmt->profile->min); > + > + if (c_fmt->level) > + v4l2_ctrl_new_std_menu > + (&stream->ctrl_handler, > + &virtio_video_enc_ctrl_ops, > + V4L2_CID_MPEG_VIDEO_H264_LEVEL, > + c_fmt->level->max, > + c_fmt->level->skip_mask, > + c_fmt->level->min); > + break; > + default: > + v4l2_dbg(1, vv->debug, > + &vv->v4l2_dev, "unsupported format\n"); > + break; > + } > + } > + > + if (stream->control.bitrate) { > + v4l2_ctrl_new_std(&stream->ctrl_handler, > + &virtio_video_enc_ctrl_ops, > + V4L2_CID_MPEG_VIDEO_BITRATE, > + 1, stream->control.bitrate, > + 1, stream->control.bitrate); > + } > + > + if (stream->ctrl_handler.error) > + return stream->ctrl_handler.error; > + > + v4l2_ctrl_handler_setup(&stream->ctrl_handler); > + > + return 0; > +} > + > +int virtio_video_enc_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 virtio_video *vv = vvd->vv; > + struct device *dev = vv->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_enc_qops; > + src_vq->mem_ops = virtio_video_mem_ops(vv); > + 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(vv); > + 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_enc_qops; > + dst_vq->mem_ops = virtio_video_mem_ops(vv); > + 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(vv); > + dst_vq->dev = dev; > + > + return vb2_queue_init(dst_vq); > +} > + > +static int virtio_video_try_encoder_cmd(struct file *file, void *fh, > + struct v4l2_encoder_cmd *cmd) > +{ > + struct virtio_video_stream *stream = file2stream(file); > + struct virtio_video_device *vvd = video_drvdata(file); > + struct virtio_video *vv = vvd->vv; > + > + if (stream->state == STREAM_STATE_DRAIN) > + return -EBUSY; > + > + switch (cmd->cmd) { > + case V4L2_ENC_CMD_STOP: > + case V4L2_ENC_CMD_START: > + if (cmd->flags != 0) { > + v4l2_err(&vv->v4l2_dev, "flags=%u are not supported", > + cmd->flags); > + return -EINVAL; > + } > + break; > + default: > + return -EINVAL; > + } > + > + return 0; > +} > + > +static int virtio_video_encoder_cmd(struct file *file, void *fh, > + struct v4l2_encoder_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); > + struct virtio_video *vv = vvd->vv; > + > + ret = virtio_video_try_encoder_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_ENC_CMD_START: > + vb2_clear_last_buffer_dequeued(dst_vq); > + stream->state = STREAM_STATE_RUNNING; > + break; > + case V4L2_ENC_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, vv->debug, > + &vv->v4l2_dev, "output is not streaming\n"); > + return 0; > + } > + > + if (!vb2_is_streaming(dst_vq)) { > + v4l2_dbg(1, vv->debug, > + &vv->v4l2_dev, "capture is not streaming\n"); > + return 0; > + } > + > + ret = virtio_video_cmd_stream_drain(vv, stream->stream_id); > + if (ret) { > + v4l2_err(&vv->v4l2_dev, "failed to drain stream\n"); > + return ret; > + } > + > + stream->state = STREAM_STATE_DRAIN; > + break; > + default: > + return -EINVAL; > + } > + > + return 0; > +} > + > +static int virtio_video_enc_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 *fmt = NULL; > + int idx = 0; > + > + if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) > + return -EINVAL; > + > + if (f->index >= vvd->num_output_fmts) > + return -EINVAL; > + > + list_for_each_entry(fmt, &vvd->output_fmt_list, formats_list_entry) { > + if (f->index == idx) { > + f->pixelformat = fmt->desc.format; > + return 0; > + } > + idx++; > + } > + return -EINVAL; > +} > + > +static int virtio_video_enc_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_info *info = NULL; > + struct video_format *fmt = NULL; > + unsigned long output_mask = 0; > + int idx = 0, bit_num = 0; > + > + if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) > + return -EINVAL; > + > + if (f->index >= vvd->num_input_fmts) > + return -EINVAL; > + > + info = &stream->out_info; > + list_for_each_entry(fmt, &vvd->output_fmt_list, formats_list_entry) { > + if (info->fourcc_format == fmt->desc.format) { > + output_mask = fmt->desc.mask; > + break; > + } > + } > + > + if (output_mask == 0) > + return -EINVAL; > + > + list_for_each_entry(fmt, &vvd->input_fmt_list, formats_list_entry) { > + if (test_bit(bit_num, &output_mask)) { > + if (f->index == idx) { > + f->pixelformat = fmt->desc.format; > + return 0; > + } > + idx++; > + } > + bit_num++; > + } > + return -EINVAL; > +} > + > +static int virtio_video_enc_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 (stream->state == STREAM_STATE_IDLE) > + stream->state = STREAM_STATE_INIT; > + } > + > + return 0; > +} > + > +static int virtio_video_enc_try_framerate(struct virtio_video_stream *stream, > + unsigned int fps) > +{ > + int rate_idx; > + struct video_format_frame *frame = NULL; > + > + if (stream->current_frame == NULL) > + return -EINVAL; > + > + frame = stream->current_frame; > + for (rate_idx = 0; rate_idx < frame->frame.num_rates; rate_idx++) { > + struct virtio_video_format_range *frame_rate = > + &frame->frame_rates[rate_idx]; > + > + if (within_range(frame_rate->min, fps, frame_rate->max)) > + return 0; > + } > + > + return -EINVAL; > +} > + > +static void virtio_video_timeperframe_from_info(struct video_format_info *info, > + struct v4l2_fract *timeperframe) > +{ > + timeperframe->numerator = info->frame_rate; > + timeperframe->denominator = 1; > +} > + > +static int virtio_video_enc_g_parm(struct file *file, void *priv, > + struct v4l2_streamparm *a) > +{ > + struct virtio_video_stream *stream = file2stream(file); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct virtio_video *vv = vvd->vv; > + struct v4l2_outputparm *out = &a->parm.output; > + struct v4l2_fract *timeperframe = &out->timeperframe; > + > + if (!V4L2_TYPE_IS_OUTPUT(a->type)) { > + v4l2_err(&vv->v4l2_dev, > + "getting FPS is only possible for the output queue\n"); > + return -EINVAL; > + } > + > + out->capability = V4L2_CAP_TIMEPERFRAME; > + virtio_video_timeperframe_from_info(&stream->in_info, timeperframe); > + > + return 0; > +} > + > +static int virtio_video_enc_s_parm(struct file *file, void *priv, > + struct v4l2_streamparm *a) > +{ > + int ret; > + u64 frame_interval, frame_rate; > + struct video_format_info info; > + struct virtio_video_stream *stream = file2stream(file); > + struct virtio_video_device *vvd = to_virtio_vd(stream->video_dev); > + struct virtio_video *vv = vvd->vv; > + struct v4l2_outputparm *out = &a->parm.output; > + struct v4l2_fract *timeperframe = &out->timeperframe; > + > + if (V4L2_TYPE_IS_OUTPUT(a->type)) { > + frame_interval = timeperframe->numerator * (u64)USEC_PER_SEC; > + do_div(frame_interval, timeperframe->denominator); > + if (!frame_interval) > + return -EINVAL; > + > + frame_rate = (u64)USEC_PER_SEC; > + do_div(frame_rate, frame_interval); > + } else { > + v4l2_err(&vv->v4l2_dev, > + "setting FPS is only possible for the output queue\n"); > + return -EINVAL; > + } > + > + ret = virtio_video_enc_try_framerate(stream, frame_rate); > + if (ret) > + return ret; > + > + virtio_video_format_fill_default_info(&info, &stream->in_info); > + info.frame_rate = frame_rate; > + > + virtio_video_cmd_set_params(vv, stream, &info, > + VIRTIO_VIDEO_QUEUE_TYPE_INPUT); > + virtio_video_cmd_get_params(vv, stream, VIRTIO_VIDEO_QUEUE_TYPE_INPUT); > + virtio_video_cmd_get_params(vv, stream, VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); > + > + out->capability = V4L2_CAP_TIMEPERFRAME; > + virtio_video_timeperframe_from_info(&stream->in_info, timeperframe); > + > + return 0; > +} > + > +static const struct v4l2_ioctl_ops virtio_video_enc_ioctl_ops = { > + .vidioc_querycap = virtio_video_querycap, > + > + .vidioc_enum_fmt_vid_cap = virtio_video_enc_enum_fmt_vid_cap, > + .vidioc_g_fmt_vid_cap = virtio_video_g_fmt, > + .vidioc_s_fmt_vid_cap = virtio_video_enc_s_fmt, > + > + .vidioc_enum_fmt_vid_cap_mplane = virtio_video_enc_enum_fmt_vid_cap, > + .vidioc_g_fmt_vid_cap_mplane = virtio_video_g_fmt, > + .vidioc_s_fmt_vid_cap_mplane = virtio_video_enc_s_fmt, > + > + .vidioc_enum_fmt_vid_out = virtio_video_enc_enum_fmt_vid_out, > + .vidioc_g_fmt_vid_out = virtio_video_g_fmt, > + .vidioc_s_fmt_vid_out = virtio_video_enc_s_fmt, > + > + .vidioc_enum_fmt_vid_out_mplane = virtio_video_enc_enum_fmt_vid_out, > + .vidioc_g_fmt_vid_out_mplane = virtio_video_g_fmt, > + .vidioc_s_fmt_vid_out_mplane = virtio_video_enc_s_fmt, > + > + .vidioc_try_encoder_cmd = virtio_video_try_encoder_cmd, > + .vidioc_encoder_cmd = virtio_video_encoder_cmd, > + .vidioc_enum_frameintervals = virtio_video_enum_framemintervals, > + .vidioc_enum_framesizes = virtio_video_enum_framesizes, > + > + .vidioc_g_selection = virtio_video_g_selection, > + .vidioc_s_selection = virtio_video_s_selection, > + > + .vidioc_reqbufs = virtio_video_reqbufs, > + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, > + .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, > + .vidioc_dqbuf = v4l2_m2m_ioctl_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_s_parm = virtio_video_enc_s_parm, > + .vidioc_g_parm = virtio_video_enc_g_parm, > + > + .vidioc_subscribe_event = virtio_video_subscribe_event, > + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, > +}; > + > +int virtio_video_enc_init(struct video_device *vd) > +{ > + ssize_t num; > + > + vd->ioctl_ops = &virtio_video_enc_ioctl_ops; > + num = strscpy(vd->name, "stateful-encoder", sizeof(vd->name)); > + > + return 0; > +} > diff --git a/drivers/media/virtio/virtio_video_enc.h b/drivers/media/virtio/virtio_video_enc.h > new file mode 100644 > index 000000000000..3d2a27a8e08c > --- /dev/null > +++ b/drivers/media/virtio/virtio_video_enc.h > @@ -0,0 +1,30 @@ > +/* SPDX-License-Identifier: GPL-2.0+ */ > +/* Encoder header for virtio video driver. > + * > + * Copyright 2019 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_ENC_H > +#define _VIRTIO_VIDEO_ENC_H > + > +#include "virtio_video.h" > + > +int virtio_video_enc_init(struct video_device *vd); > +int virtio_video_enc_init_ctrls(struct virtio_video_stream *stream); > +int virtio_video_enc_init_queues(void *priv, struct vb2_queue *src_vq, > + struct vb2_queue *dst_vq); > + > +#endif /* _VIRTIO_VIDEO_ENC_H */ > diff --git a/drivers/media/virtio/virtio_video_helpers.c b/drivers/media/virtio/virtio_video_helpers.c > new file mode 100644 > index 000000000000..bc4754e7ca78 > --- /dev/null > +++ b/drivers/media/virtio/virtio_video_helpers.c > @@ -0,0 +1,250 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* Driver for virtio video device. > + * > + * Copyright 2019 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 "virtio_video.h" > + > +struct virtio_video_convert_table { > + uint32_t virtio_value; > + uint32_t v4l2_value; > +}; > + > +static struct virtio_video_convert_table level_table[] = { > + { VIRTIO_VIDEO_LEVEL_H264_1_0, V4L2_MPEG_VIDEO_H264_LEVEL_1_0 }, > + { VIRTIO_VIDEO_LEVEL_H264_1_1, V4L2_MPEG_VIDEO_H264_LEVEL_1_1 }, > + { VIRTIO_VIDEO_LEVEL_H264_1_2, V4L2_MPEG_VIDEO_H264_LEVEL_1_2 }, > + { VIRTIO_VIDEO_LEVEL_H264_1_3, V4L2_MPEG_VIDEO_H264_LEVEL_1_3 }, > + { VIRTIO_VIDEO_LEVEL_H264_2_0, V4L2_MPEG_VIDEO_H264_LEVEL_2_0 }, > + { VIRTIO_VIDEO_LEVEL_H264_2_1, V4L2_MPEG_VIDEO_H264_LEVEL_2_1 }, > + { VIRTIO_VIDEO_LEVEL_H264_2_2, V4L2_MPEG_VIDEO_H264_LEVEL_2_2 }, > + { VIRTIO_VIDEO_LEVEL_H264_3_0, V4L2_MPEG_VIDEO_H264_LEVEL_3_0 }, > + { VIRTIO_VIDEO_LEVEL_H264_3_1, V4L2_MPEG_VIDEO_H264_LEVEL_3_1 }, > + { VIRTIO_VIDEO_LEVEL_H264_3_2, V4L2_MPEG_VIDEO_H264_LEVEL_3_2 }, > + { VIRTIO_VIDEO_LEVEL_H264_4_0, V4L2_MPEG_VIDEO_H264_LEVEL_4_0 }, > + { VIRTIO_VIDEO_LEVEL_H264_4_1, V4L2_MPEG_VIDEO_H264_LEVEL_4_1 }, > + { VIRTIO_VIDEO_LEVEL_H264_4_2, V4L2_MPEG_VIDEO_H264_LEVEL_4_2 }, > + { VIRTIO_VIDEO_LEVEL_H264_5_0, V4L2_MPEG_VIDEO_H264_LEVEL_5_0 }, > + { VIRTIO_VIDEO_LEVEL_H264_5_1, V4L2_MPEG_VIDEO_H264_LEVEL_5_1 }, > + { 0 }, > +}; > + > +uint32_t virtio_video_level_to_v4l2(uint32_t level) > +{ > + size_t idx; > + > + for (idx = 0; idx < ARRAY_SIZE(level_table); idx++) { > + if (level_table[idx].virtio_value == level) > + return level_table[idx].v4l2_value; > + } > + > + return 0; > +} > + > +uint32_t virtio_video_v4l2_level_to_virtio(uint32_t v4l2_level) > +{ > + size_t idx; > + > + for (idx = 0; idx < ARRAY_SIZE(level_table); idx++) { > + if (level_table[idx].v4l2_value == v4l2_level) > + return level_table[idx].virtio_value; > + } > + > + return 0; > +} > + > +static struct virtio_video_convert_table profile_table[] = { > + { VIRTIO_VIDEO_PROFILE_H264_BASELINE, > + V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE }, > + { VIRTIO_VIDEO_PROFILE_H264_MAIN, V4L2_MPEG_VIDEO_H264_PROFILE_MAIN }, > + { VIRTIO_VIDEO_PROFILE_H264_EXTENDED, > + V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED }, > + { VIRTIO_VIDEO_PROFILE_H264_HIGH, V4L2_MPEG_VIDEO_H264_PROFILE_HIGH }, > + { VIRTIO_VIDEO_PROFILE_H264_HIGH10PROFILE, > + V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10 }, > + { VIRTIO_VIDEO_PROFILE_H264_HIGH422PROFILE, > + V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_422}, > + { VIRTIO_VIDEO_PROFILE_H264_HIGH444PREDICTIVEPROFILE, > + V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_444_PREDICTIVE }, > + { VIRTIO_VIDEO_PROFILE_H264_SCALABLEBASELINE, > + V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_BASELINE }, > + { VIRTIO_VIDEO_PROFILE_H264_SCALABLEHIGH, > + V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_HIGH }, > + { VIRTIO_VIDEO_PROFILE_H264_STEREOHIGH, > + V4L2_MPEG_VIDEO_H264_PROFILE_STEREO_HIGH }, > + { VIRTIO_VIDEO_PROFILE_H264_MULTIVIEWHIGH, > + V4L2_MPEG_VIDEO_H264_PROFILE_MULTIVIEW_HIGH }, > + { 0 }, > +}; > + > +uint32_t virtio_video_profile_to_v4l2(uint32_t profile) > +{ > + size_t idx; > + > + for (idx = 0; idx < ARRAY_SIZE(profile_table); idx++) { > + if (profile_table[idx].virtio_value == profile) > + return profile_table[idx].v4l2_value; > + } > + > + return 0; > +} > + > +uint32_t virtio_video_v4l2_profile_to_virtio(uint32_t v4l2_profile) > +{ > + size_t idx; > + > + for (idx = 0; idx < ARRAY_SIZE(profile_table); idx++) { > + if (profile_table[idx].v4l2_value == v4l2_profile) > + return profile_table[idx].virtio_value; > + } > + > + return 0; > +} > + > +static struct virtio_video_convert_table format_table[] = { > + { VIRTIO_VIDEO_FORMAT_ARGB8888, V4L2_PIX_FMT_ARGB32 }, > + { VIRTIO_VIDEO_FORMAT_BGRA8888, V4L2_PIX_FMT_ABGR32 }, > + { VIRTIO_VIDEO_FORMAT_NV12, V4L2_PIX_FMT_NV12 }, > + { VIRTIO_VIDEO_FORMAT_YUV420, V4L2_PIX_FMT_YUV420 }, > + { VIRTIO_VIDEO_FORMAT_YVU420, V4L2_PIX_FMT_YVU420 }, > + { VIRTIO_VIDEO_FORMAT_MPEG2, V4L2_PIX_FMT_MPEG2 }, > + { VIRTIO_VIDEO_FORMAT_MPEG4, V4L2_PIX_FMT_MPEG4 }, > + { VIRTIO_VIDEO_FORMAT_H264, V4L2_PIX_FMT_H264 }, > + { VIRTIO_VIDEO_FORMAT_HEVC, V4L2_PIX_FMT_HEVC }, > + { VIRTIO_VIDEO_FORMAT_VP8, V4L2_PIX_FMT_VP8 }, > + { VIRTIO_VIDEO_FORMAT_VP9, V4L2_PIX_FMT_VP9 }, > + { 0 }, > +}; > + > +uint32_t virtio_video_format_to_v4l2(uint32_t format) > +{ > + size_t idx; > + > + for (idx = 0; idx < ARRAY_SIZE(format_table); idx++) { > + if (format_table[idx].virtio_value == format) > + return format_table[idx].v4l2_value; > + } > + > + return 0; > +} > + > +uint32_t virtio_video_v4l2_format_to_virtio(uint32_t v4l2_format) > +{ > + size_t idx; > + > + for (idx = 0; idx < ARRAY_SIZE(format_table); idx++) { > + if (format_table[idx].v4l2_value == v4l2_format) > + return format_table[idx].virtio_value; > + } > + > + return 0; > +} > + > +static struct virtio_video_convert_table control_table[] = { > + { VIRTIO_VIDEO_CONTROL_BITRATE, V4L2_CID_MPEG_VIDEO_BITRATE }, > + { VIRTIO_VIDEO_CONTROL_PROFILE, V4L2_CID_MPEG_VIDEO_H264_PROFILE }, > + { VIRTIO_VIDEO_CONTROL_LEVEL, V4L2_CID_MPEG_VIDEO_H264_LEVEL }, > + { 0 }, > +}; > + > +uint32_t virtio_video_control_to_v4l2(uint32_t control) > +{ > + size_t idx; > + > + for (idx = 0; idx < ARRAY_SIZE(control_table); idx++) { > + if (control_table[idx].virtio_value == control) > + return control_table[idx].v4l2_value; > + } > + > + return 0; > +} > + > +uint32_t virtio_video_v4l2_control_to_virtio(uint32_t v4l2_control) > +{ > + size_t idx; > + > + for (idx = 0; idx < ARRAY_SIZE(control_table); idx++) { > + if (control_table[idx].v4l2_value == v4l2_control) > + return control_table[idx].virtio_value; > + } > + > + return 0; > +} > + > +uint32_t virtio_video_get_format_from_virtio_profile(uint32_t virtio_profile) > +{ > + if (virtio_profile >= VIRTIO_VIDEO_PROFILE_H264_MIN && > + virtio_profile <= VIRTIO_VIDEO_PROFILE_H264_MAX) > + return VIRTIO_VIDEO_FORMAT_H264; > + else if (virtio_profile >= VIRTIO_VIDEO_PROFILE_HEVC_MIN && > + virtio_profile <= VIRTIO_VIDEO_PROFILE_HEVC_MAX) > + return VIRTIO_VIDEO_FORMAT_HEVC; > + else if (virtio_profile >= VIRTIO_VIDEO_PROFILE_VP8_MIN && > + virtio_profile <= VIRTIO_VIDEO_PROFILE_VP8_MAX) > + return VIRTIO_VIDEO_FORMAT_VP8; > + else if (virtio_profile >= VIRTIO_VIDEO_PROFILE_VP9_MIN && > + virtio_profile <= VIRTIO_VIDEO_PROFILE_VP9_MAX) > + return VIRTIO_VIDEO_FORMAT_VP9; > + > + return 0; > +} > + > +struct video_format *find_video_format(struct list_head *fmts_list, > + uint32_t format) > +{ > + struct video_format *fmt = NULL; > + > + list_for_each_entry(fmt, fmts_list, formats_list_entry) { > + if (fmt->desc.format == format) > + return fmt; > + } > + > + return NULL; > +} > + > +void virtio_video_format_from_info(struct video_format_info *info, > + struct v4l2_pix_format_mplane *pix_mp) > +{ > + int i; > + > + pix_mp->width = info->frame_width; > + pix_mp->height = info->frame_height; > + pix_mp->field = V4L2_FIELD_NONE; > + pix_mp->colorspace = V4L2_COLORSPACE_REC709; > + pix_mp->xfer_func = 0; > + pix_mp->ycbcr_enc = 0; > + pix_mp->quantization = 0; > + memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved)); > + memset(pix_mp->plane_fmt[0].reserved, 0, > + sizeof(pix_mp->plane_fmt[0].reserved)); > + > + pix_mp->num_planes = info->num_planes; > + pix_mp->pixelformat = info->fourcc_format; > + > + for (i = 0; i < info->num_planes; i++) { > + pix_mp->plane_fmt[i].bytesperline = > + info->plane_format[i].stride; > + pix_mp->plane_fmt[i].sizeimage = > + info->plane_format[i].plane_size; > + } > +} > + > +void virtio_video_format_fill_default_info(struct video_format_info *dst_info, > + struct video_format_info *src_info) > +{ > + memcpy(dst_info, src_info, sizeof(*dst_info)); > +} > diff --git a/drivers/media/virtio/virtio_video_vq.c b/drivers/media/virtio/virtio_video_vq.c > new file mode 100644 > index 000000000000..4679e6b49cf3 > --- /dev/null > +++ b/drivers/media/virtio/virtio_video_vq.c > @@ -0,0 +1,1012 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* Driver for virtio video device. > + * > + * Copyright 2019 OpenSynergy GmbH. > + * > + * Based on drivers/gpu/drm/virtio/virtgpu_vq.c > + * Copyright (C) 2015 Red Hat, Inc. > + * > + * 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 "virtio_video.h" > + > +#define MAX_INLINE_CMD_SIZE 298 > +#define MAX_INLINE_RESP_SIZE 298 > +#define VBUFFER_SIZE (sizeof(struct virtio_video_vbuffer) \ > + + MAX_INLINE_CMD_SIZE \ > + + MAX_INLINE_RESP_SIZE) > + > +void virtio_video_resource_id_get(struct virtio_video *vv, uint32_t *id) > +{ > + int handle; > + > + idr_preload(GFP_KERNEL); > + spin_lock(&vv->resource_idr_lock); > + handle = idr_alloc(&vv->resource_idr, NULL, 1, 0, GFP_NOWAIT); > + spin_unlock(&vv->resource_idr_lock); > + idr_preload_end(); > + *id = handle; > +} > + > +void virtio_video_resource_id_put(struct virtio_video *vv, uint32_t id) > +{ > + spin_lock(&vv->resource_idr_lock); > + idr_remove(&vv->resource_idr, id); > + spin_unlock(&vv->resource_idr_lock); > +} > + > +void virtio_video_stream_id_get(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + uint32_t *id) > +{ > + int handle; > + > + idr_preload(GFP_KERNEL); > + spin_lock(&vv->stream_idr_lock); > + handle = idr_alloc(&vv->stream_idr, stream, 1, 0, 0); > + spin_unlock(&vv->stream_idr_lock); > + idr_preload_end(); > + *id = handle; > +} > + > +void virtio_video_stream_id_put(struct virtio_video *vv, uint32_t id) > +{ > + spin_lock(&vv->stream_idr_lock); > + idr_remove(&vv->stream_idr, id); > + spin_unlock(&vv->stream_idr_lock); > +} > + > +void virtio_video_cmd_ack(struct virtqueue *vq) > +{ > + struct virtio_video *vv = vq->vdev->priv; > + > + schedule_work(&vv->commandq.dequeue_work); > +} > + > +void virtio_video_event_ack(struct virtqueue *vq) > +{ > + struct virtio_video *vv = vq->vdev->priv; > + > + schedule_work(&vv->eventq.dequeue_work); > +} > + > +static struct virtio_video_vbuffer * > +virtio_video_get_vbuf(struct virtio_video *vv, int size, > + int resp_size, void *resp_buf, > + virtio_video_resp_cb resp_cb) > +{ > + struct virtio_video_vbuffer *vbuf; > + > + vbuf = kmem_cache_alloc(vv->vbufs, GFP_KERNEL); > + if (!vbuf) > + return ERR_PTR(-ENOMEM); > + memset(vbuf, 0, VBUFFER_SIZE); > + > + BUG_ON(size > MAX_INLINE_CMD_SIZE); > + vbuf->buf = (void *)vbuf + sizeof(*vbuf); > + vbuf->size = size; > + > + vbuf->resp_cb = resp_cb; > + vbuf->resp_size = resp_size; > + if (resp_size <= MAX_INLINE_RESP_SIZE && !resp_buf) > + vbuf->resp_buf = (void *)vbuf->buf + size; > + else > + vbuf->resp_buf = resp_buf; > + BUG_ON(!vbuf->resp_buf); > + > + return vbuf; > +} > + > +static void free_vbuf(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + if (!vbuf->resp_cb && > + vbuf->resp_size > MAX_INLINE_RESP_SIZE) > + kfree(vbuf->resp_buf); > + kfree(vbuf->data_buf); > + kmem_cache_free(vv->vbufs, vbuf); > +} > + > +static void reclaim_vbufs(struct virtqueue *vq, struct list_head *reclaim_list) > +{ > + struct virtio_video_vbuffer *vbuf; > + unsigned int len; > + struct virtio_video *vv = vq->vdev->priv; > + int freed = 0; > + > + while ((vbuf = virtqueue_get_buf(vq, &len))) { > + list_add_tail(&vbuf->list, reclaim_list); > + freed++; > + } > + if (freed == 0) > + v4l2_dbg(1, vv->debug, &vv->v4l2_dev, > + "zero vbufs reclaimed\n"); > +} > + > +static void detach_vbufs(struct virtqueue *vq, struct list_head *detach_list) > +{ > + struct virtio_video_vbuffer *vbuf; > + > + while ((vbuf = virtqueue_detach_unused_buf(vq)) != NULL) > + list_add_tail(&vbuf->list, detach_list); > +} > + > +static void virtio_video_deatch_vbufs(struct virtio_video *vv) > +{ > + struct list_head detach_list; > + struct virtio_video_vbuffer *entry, *tmp; > + > + INIT_LIST_HEAD(&detach_list); > + > + detach_vbufs(vv->eventq.vq, &detach_list); > + detach_vbufs(vv->commandq.vq, &detach_list); > + > + if (list_empty(&detach_list)) > + return; > + > + list_for_each_entry_safe(entry, tmp, &detach_list, list) { > + list_del(&entry->list); > + free_vbuf(vv, entry); > + } > +} > + > +int virtio_video_alloc_vbufs(struct virtio_video *vv) > +{ > + vv->vbufs = > + kmem_cache_create("virtio-video-vbufs", VBUFFER_SIZE, > + __alignof__(struct virtio_video_vbuffer), 0, > + NULL); > + if (!vv->vbufs) > + return -ENOMEM; > + > + return 0; > +} > + > +void virtio_video_free_vbufs(struct virtio_video *vv) > +{ > + virtio_video_deatch_vbufs(vv); > + kmem_cache_destroy(vv->vbufs); > + vv->vbufs = NULL; > +} > + > +static void *virtio_video_alloc_req(struct virtio_video *vv, > + struct virtio_video_vbuffer **vbuffer_p, > + int size) > +{ > + struct virtio_video_vbuffer *vbuf; > + > + vbuf = virtio_video_get_vbuf(vv, size, > + sizeof(struct virtio_video_cmd_hdr), > + NULL, NULL); > + if (IS_ERR(vbuf)) { > + *vbuffer_p = NULL; > + return ERR_CAST(vbuf); > + } > + *vbuffer_p = vbuf; > + > + return vbuf->buf; > +} > + > +static void * > +virtio_video_alloc_req_resp(struct virtio_video *vv, > + virtio_video_resp_cb cb, > + struct virtio_video_vbuffer **vbuffer_p, > + int req_size, int resp_size, > + void *resp_buf) > +{ > + struct virtio_video_vbuffer *vbuf; > + > + vbuf = virtio_video_get_vbuf(vv, req_size, resp_size, resp_buf, cb); > + if (IS_ERR(vbuf)) { > + *vbuffer_p = NULL; > + return ERR_CAST(vbuf); > + } > + *vbuffer_p = vbuf; > + > + return vbuf->buf; > +} > + > +void virtio_video_dequeue_cmd_func(struct work_struct *work) > +{ > + struct virtio_video *vv = > + container_of(work, struct virtio_video, > + commandq.dequeue_work); > + struct list_head reclaim_list; > + struct virtio_video_vbuffer *entry, *tmp; > + struct virtio_video_cmd_hdr *resp; > + > + INIT_LIST_HEAD(&reclaim_list); > + spin_lock(&vv->commandq.qlock); > + do { > + virtqueue_disable_cb(vv->commandq.vq); > + reclaim_vbufs(vv->commandq.vq, &reclaim_list); > + > + } while (!virtqueue_enable_cb(vv->commandq.vq)); > + spin_unlock(&vv->commandq.qlock); > + > + list_for_each_entry_safe(entry, tmp, &reclaim_list, list) { > + resp = (struct virtio_video_cmd_hdr *)entry->resp_buf; > + if (resp->type >= > + cpu_to_le32(VIRTIO_VIDEO_RESP_ERR_INVALID_OPERATION)) > + v4l2_dbg(1, vv->debug, &vv->v4l2_dev, > + "response 0x%x\n", le32_to_cpu(resp->type)); > + if (entry->resp_cb) > + entry->resp_cb(vv, entry); > + > + list_del(&entry->list); > + free_vbuf(vv, entry); > + } > + wake_up(&vv->commandq.ack_queue); > +} > + > +void virtio_video_dequeue_event_func(struct work_struct *work) > +{ > + struct virtio_video *vv = > + container_of(work, struct virtio_video, > + eventq.dequeue_work); > + struct list_head reclaim_list; > + struct virtio_video_vbuffer *entry, *tmp; > + > + INIT_LIST_HEAD(&reclaim_list); > + spin_lock(&vv->eventq.qlock); > + do { > + virtqueue_disable_cb(vv->eventq.vq); > + reclaim_vbufs(vv->eventq.vq, &reclaim_list); > + > + } while (!virtqueue_enable_cb(vv->eventq.vq)); > + spin_unlock(&vv->eventq.qlock); > + > + list_for_each_entry_safe(entry, tmp, &reclaim_list, list) { > + entry->resp_cb(vv, entry); > + list_del(&entry->list); > + } > + wake_up(&vv->eventq.ack_queue); > +} > + > +static int > +virtio_video_queue_cmd_buffer_locked(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + struct virtqueue *vq = vv->commandq.vq; > + struct scatterlist *sgs[3], vreq, vout, vresp; > + int outcnt = 0, incnt = 0; > + int ret; > + > + if (!vv->vq_ready) > + return -ENODEV; > + > + sg_init_one(&vreq, vbuf->buf, vbuf->size); > + sgs[outcnt + incnt] = &vreq; > + outcnt++; > + > + if (vbuf->data_size) { > + sg_init_one(&vout, vbuf->data_buf, vbuf->data_size); > + sgs[outcnt + incnt] = &vout; > + outcnt++; > + } > + > + if (vbuf->resp_size) { > + sg_init_one(&vresp, vbuf->resp_buf, vbuf->resp_size); > + sgs[outcnt + incnt] = &vresp; > + incnt++; > + } > + > +retry: > + ret = virtqueue_add_sgs(vq, sgs, outcnt, incnt, vbuf, GFP_ATOMIC); > + if (ret == -ENOSPC) { > + spin_unlock(&vv->commandq.qlock); > + wait_event(vv->commandq.ack_queue, vq->num_free); > + spin_lock(&vv->commandq.qlock); > + goto retry; > + } else { > + virtqueue_kick(vq); > + } > + > + return ret; > +} > + > +static int virtio_video_queue_cmd_buffer(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + int ret; > + > + spin_lock(&vv->commandq.qlock); > + ret = virtio_video_queue_cmd_buffer_locked(vv, vbuf); > + spin_unlock(&vv->commandq.qlock); > + > + return ret; > +} > + > +static int virtio_video_queue_event_buffer(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + int ret; > + struct scatterlist vresp; > + struct virtqueue *vq = vv->eventq.vq; > + > + spin_lock(&vv->eventq.qlock); > + sg_init_one(&vresp, vbuf->resp_buf, vbuf->resp_size); > + ret = virtqueue_add_inbuf(vq, &vresp, 1, vbuf, GFP_ATOMIC); > + spin_unlock(&vv->eventq.qlock); > + if (ret) > + return ret; > + > + virtqueue_kick(vq); > + > + return 0; > +} > + > +static void virtio_video_event_cb(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + int ret; > + struct virtio_video_stream *stream; > + struct virtio_video_event *event = > + (struct virtio_video_event *)vbuf->resp_buf; > + > + stream = idr_find(&vv->stream_idr, event->stream_id); > + if (!stream) { > + v4l2_warn(&vv->v4l2_dev, "no stream %u found for event\n", > + event->stream_id); > + return; > + } > + > + switch (le32_to_cpu(event->event_type)) { > + case VIRTIO_VIDEO_EVENT_DECODER_RESOLUTION_CHANGED: > + virtio_video_cmd_get_params(vv, stream, > + VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT); > + virtio_video_queue_res_chg_event(stream); > + if (stream->state == STREAM_STATE_INIT) { > + stream->state = STREAM_STATE_METADATA; > + wake_up(&vv->wq); > + } > + break; > + default: > + v4l2_warn(&vv->v4l2_dev, "failed to queue event buffer\n"); > + break; > + } > + > + memset(vbuf->resp_buf, 0, vbuf->resp_size); > + ret = virtio_video_queue_event_buffer(vv, vbuf); > + if (ret) > + v4l2_warn(&vv->v4l2_dev, "queue event buffer failed\n"); > +} > + > +int virtio_video_alloc_events(struct virtio_video *vv, size_t num) > +{ > + int ret; > + size_t i; > + struct virtio_video_vbuffer *vbuf; > + > + for (i = 0; i < num; i++) { > + vbuf = virtio_video_get_vbuf(vv, 0, > + sizeof(struct virtio_video_event), > + NULL, virtio_video_event_cb); > + if (IS_ERR(vbuf)) > + return PTR_ERR(vbuf); > + > + ret = virtio_video_queue_event_buffer(vv, vbuf); > + if (ret) > + return ret; > + } > + > + return 0; > +} > + > +int virtio_video_cmd_stream_create(struct virtio_video *vv, uint32_t stream_id, > + enum virtio_video_format format, > + const char *tag) > +{ > + struct virtio_video_stream_create *req_p; > + struct virtio_video_vbuffer *vbuf; > + > + req_p = virtio_video_alloc_req(vv, &vbuf, sizeof(*req_p)); > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_STREAM_CREATE); > + req_p->hdr.stream_id = cpu_to_le32(stream_id); > + req_p->in_mem_type = cpu_to_le32(VIRTIO_VIDEO_MEM_TYPE_GUEST_PAGES); > + req_p->out_mem_type = cpu_to_le32(VIRTIO_VIDEO_MEM_TYPE_GUEST_PAGES); > + req_p->coded_format = cpu_to_le32(format); > + strncpy(req_p->tag, tag, sizeof(req_p->tag) - 1); > + req_p->tag[sizeof(req_p->tag) - 1] = 0; > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +int virtio_video_cmd_stream_destroy(struct virtio_video *vv, uint32_t stream_id) > +{ > + struct virtio_video_stream_destroy *req_p; > + struct virtio_video_vbuffer *vbuf; > + > + req_p = virtio_video_alloc_req(vv, &vbuf, sizeof(*req_p)); > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_STREAM_DESTROY); > + req_p->hdr.stream_id = cpu_to_le32(stream_id); > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +int virtio_video_cmd_stream_drain(struct virtio_video *vv, uint32_t stream_id) > +{ > + struct virtio_video_stream_drain *req_p; > + struct virtio_video_vbuffer *vbuf; > + > + req_p = virtio_video_alloc_req(vv, &vbuf, sizeof(*req_p)); > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_STREAM_DRAIN); > + req_p->hdr.stream_id = cpu_to_le32(stream_id); > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +int virtio_video_cmd_resource_create(struct virtio_video *vv, > + uint32_t stream_id, uint32_t resource_id, > + uint32_t queue_type, > + struct virtio_video_mem_entry *ents, > + unsigned int num_planes, > + unsigned int *num_entry) > +{ > + unsigned int i = 0, nents = 0; > + struct virtio_video_resource_create *req_p; > + struct virtio_video_vbuffer *vbuf; > + > + req_p = virtio_video_alloc_req(vv, &vbuf, sizeof(*req_p)); > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_RESOURCE_CREATE); > + req_p->hdr.stream_id = cpu_to_le32(stream_id); > + req_p->resource_id = cpu_to_le32(resource_id); > + req_p->queue_type = cpu_to_le32(queue_type); > + req_p->num_planes = cpu_to_le32(num_planes); > + > + for (i = 0; i < num_planes; i++) { > + nents += num_entry[i]; > + req_p->num_entries[i] = cpu_to_le32(num_entry[i]); > + } > + > + vbuf->data_buf = ents; > + vbuf->data_size = sizeof(*ents) * nents; > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +int virtio_video_cmd_resource_destroy_all(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + enum virtio_video_queue_type qtype) > +{ > + struct virtio_video_resource_destroy_all *req_p; > + struct virtio_video_vbuffer *vbuf; > + > + req_p = virtio_video_alloc_req(vv, &vbuf, sizeof(*req_p)); > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_RESOURCE_DESTROY_ALL); > + req_p->hdr.stream_id = cpu_to_le32(stream->stream_id); > + req_p->queue_type = cpu_to_le32(qtype); > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +static void > +virtio_video_cmd_resource_queue_cb(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + uint32_t flags, bytesused; > + uint64_t timestamp; > + struct virtio_video_buffer *virtio_vb = vbuf->priv; > + struct virtio_video_resource_queue_resp *resp = > + (struct virtio_video_resource_queue_resp *)vbuf->resp_buf; > + > + flags = le32_to_cpu(resp->flags); > + bytesused = le32_to_cpu(resp->size); > + timestamp = le64_to_cpu(resp->timestamp); > + > + virtio_video_buf_done(virtio_vb, flags, timestamp, bytesused); > +} > + > +int virtio_video_cmd_resource_queue(struct virtio_video *vv, uint32_t stream_id, > + struct virtio_video_buffer *virtio_vb, > + uint32_t data_size[], > + uint8_t num_data_size, uint32_t queue_type) > +{ > + uint8_t i; > + struct virtio_video_resource_queue *req_p; > + struct virtio_video_resource_queue_resp *resp_p; > + struct virtio_video_vbuffer *vbuf; > + size_t resp_size = sizeof(struct virtio_video_resource_queue_resp); > + > + req_p = virtio_video_alloc_req_resp(vv, > + &virtio_video_cmd_resource_queue_cb, > + &vbuf, sizeof(*req_p), resp_size, > + NULL); > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_RESOURCE_QUEUE); > + req_p->hdr.stream_id = cpu_to_le32(stream_id); > + req_p->queue_type = cpu_to_le32(queue_type); > + req_p->resource_id = cpu_to_le32(virtio_vb->resource_id); > + req_p->num_data_sizes = num_data_size; > + req_p->timestamp = > + cpu_to_le64(virtio_vb->v4l2_m2m_vb.vb.vb2_buf.timestamp); > + > + for (i = 0; i < num_data_size; ++i) > + req_p->data_sizes[i] = cpu_to_le32(data_size[i]); > + > + resp_p = (struct virtio_video_resource_queue_resp *)vbuf->resp_buf; > + memset(resp_p, 0, sizeof(*resp_p)); > + > + vbuf->priv = virtio_vb; > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +static void > +virtio_video_cmd_queue_clear_cb(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + struct virtio_video_stream *stream = vbuf->priv; > + struct virtio_video_queue_clear *req_p = > + (struct virtio_video_queue_clear *)vbuf->buf; > + > + if (le32_to_cpu(req_p->queue_type) == VIRTIO_VIDEO_QUEUE_TYPE_INPUT) > + stream->src_cleared = true; > + else > + stream->dst_cleared = true; > + > + wake_up(&vv->wq); > +} > + > +int virtio_video_cmd_queue_clear(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + uint32_t queue_type) > +{ > + struct virtio_video_queue_clear *req_p; > + struct virtio_video_vbuffer *vbuf; > + > + req_p = virtio_video_alloc_req_resp > + (vv, &virtio_video_cmd_queue_clear_cb, > + &vbuf, sizeof(*req_p), > + sizeof(struct virtio_video_cmd_hdr), NULL); > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_QUEUE_CLEAR); > + req_p->hdr.stream_id = cpu_to_le32(stream->stream_id); > + req_p->queue_type = cpu_to_le32(queue_type); > + > + vbuf->priv = stream; > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +static void > +virtio_video_query_caps_cb(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + bool *got_resp_p = vbuf->priv; > + *got_resp_p = true; > + wake_up(&vv->wq); > +} > + > +int virtio_video_query_capability(struct virtio_video *vv, void *resp_buf, > + size_t resp_size, uint32_t queue_type) > +{ > + struct virtio_video_query_capability *req_p = NULL; > + struct virtio_video_vbuffer *vbuf = NULL; > + > + if (!vv || !resp_buf) > + return -1; > + > + req_p = virtio_video_alloc_req_resp(vv, &virtio_video_query_caps_cb, > + &vbuf, sizeof(*req_p), resp_size, > + resp_buf); > + if (IS_ERR(req_p)) > + return -1; > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_QUERY_CAPABILITY); > + req_p->queue_type = cpu_to_le32(queue_type); > + > + vbuf->priv = &vv->got_caps; > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +int virtio_video_query_control_level(struct virtio_video *vv, void *resp_buf, > + size_t resp_size, uint32_t format) > +{ > + struct virtio_video_query_control *req_p = NULL; > + struct virtio_video_query_control_level *ctrl_l = NULL; > + struct virtio_video_vbuffer *vbuf = NULL; > + uint32_t req_size = 0; > + > + if (!vv || !resp_buf) > + return -1; > + > + req_size = sizeof(struct virtio_video_query_control) + > + sizeof(struct virtio_video_query_control_level); > + > + req_p = virtio_video_alloc_req_resp(vv, &virtio_video_query_caps_cb, > + &vbuf, req_size, resp_size, > + resp_buf); > + if (IS_ERR(req_p)) > + return -1; > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_QUERY_CONTROL); > + req_p->control = cpu_to_le32(VIRTIO_VIDEO_CONTROL_LEVEL); > + ctrl_l = (void *)((char *)req_p + > + sizeof(struct virtio_video_query_control)); > + ctrl_l->format = cpu_to_le32(format); > + > + vbuf->priv = &vv->got_control; > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +int virtio_video_query_control_profile(struct virtio_video *vv, void *resp_buf, > + size_t resp_size, uint32_t format) > +{ > + struct virtio_video_query_control *req_p = NULL; > + struct virtio_video_query_control_profile *ctrl_p = NULL; > + struct virtio_video_vbuffer *vbuf = NULL; > + uint32_t req_size = 0; > + > + if (!vv || !resp_buf) > + return -1; > + > + req_size = sizeof(struct virtio_video_query_control) + > + sizeof(struct virtio_video_query_control_profile); > + > + req_p = virtio_video_alloc_req_resp(vv, &virtio_video_query_caps_cb, > + &vbuf, req_size, resp_size, > + resp_buf); > + if (IS_ERR(req_p)) > + return -1; > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_QUERY_CONTROL); > + req_p->control = cpu_to_le32(VIRTIO_VIDEO_CONTROL_PROFILE); > + ctrl_p = (void *)((char *)req_p + > + sizeof(struct virtio_video_query_control)); > + ctrl_p->format = cpu_to_le32(format); > + > + vbuf->priv = &vv->got_control; > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +static void > +virtio_video_cmd_get_params_cb(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + int i; > + struct virtio_video_get_params_resp *resp = > + (struct virtio_video_get_params_resp *)vbuf->resp_buf; > + struct virtio_video_params *params = &resp->params; > + struct virtio_video_stream *stream = vbuf->priv; > + enum virtio_video_queue_type queue_type; > + struct video_format_info *format_info = NULL; > + > + queue_type = le32_to_cpu(params->queue_type); > + if (queue_type == VIRTIO_VIDEO_QUEUE_TYPE_INPUT) > + format_info = &stream->in_info; > + else > + format_info = &stream->out_info; > + > + if (!format_info) > + return; > + > + format_info->frame_rate = le32_to_cpu(params->frame_rate); > + format_info->frame_width = le32_to_cpu(params->frame_width); > + format_info->frame_height = le32_to_cpu(params->frame_height); > + format_info->min_buffers = le32_to_cpu(params->min_buffers); > + format_info->max_buffers = le32_to_cpu(params->max_buffers); > + format_info->fourcc_format = > + virtio_video_format_to_v4l2(le32_to_cpu(params->format)); > + > + format_info->crop.top = le32_to_cpu(params->crop.top); > + format_info->crop.left = le32_to_cpu(params->crop.left); > + format_info->crop.width = le32_to_cpu(params->crop.width); > + format_info->crop.height = le32_to_cpu(params->crop.height); > + > + format_info->num_planes = le32_to_cpu(params->num_planes); > + for (i = 0; i < le32_to_cpu(params->num_planes); i++) { > + struct virtio_video_plane_format *plane_formats = > + ¶ms->plane_formats[i]; > + struct video_plane_format *plane_format = > + &format_info->plane_format[i]; > + > + plane_format->plane_size = > + le32_to_cpu(plane_formats->plane_size); > + plane_format->stride = le32_to_cpu(plane_formats->stride); > + } > + > + format_info->is_updated = true; > + wake_up(&vv->wq); > +} > + > +int virtio_video_cmd_get_params(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + uint32_t queue_type) > +{ > + int ret; > + struct virtio_video_get_params *req_p = NULL; > + struct virtio_video_vbuffer *vbuf = NULL; > + struct virtio_video_get_params_resp *resp_p; > + struct video_format_info *format_info = NULL; > + size_t resp_size = sizeof(struct virtio_video_get_params_resp); > + > + if (!vv || !stream) > + return -1; > + > + req_p = virtio_video_alloc_req_resp(vv, > + &virtio_video_cmd_get_params_cb, > + &vbuf, sizeof(*req_p), resp_size, > + NULL); > + > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_GET_PARAMS); > + req_p->hdr.stream_id = cpu_to_le32(stream->stream_id); > + req_p->queue_type = cpu_to_le32(queue_type); > + > + resp_p = (struct virtio_video_get_params_resp *)vbuf->resp_buf; > + memset(resp_p, 0, sizeof(*resp_p)); > + > + if (req_p->queue_type == VIRTIO_VIDEO_QUEUE_TYPE_INPUT) > + format_info = &stream->in_info; > + else > + format_info = &stream->out_info; > + > + format_info->is_updated = false; > + > + vbuf->priv = stream; > + ret = virtio_video_queue_cmd_buffer(vv, vbuf); > + if (ret) > + return ret; > + > + ret = wait_event_timeout(vv->wq, > + format_info->is_updated, 5 * HZ); > + if (ret == 0) { > + v4l2_err(&vv->v4l2_dev, "timed out waiting for get_params\n"); > + return -1; > + } > + return 0; > +} > + > +int > +virtio_video_cmd_set_params(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + struct video_format_info *format_info, > + uint32_t queue_type) > +{ > + int i; > + struct virtio_video_set_params *req_p; > + struct virtio_video_vbuffer *vbuf; > + > + req_p = virtio_video_alloc_req(vv, &vbuf, sizeof(*req_p)); > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_SET_PARAMS); > + req_p->hdr.stream_id = cpu_to_le32(stream->stream_id); > + req_p->params.queue_type = cpu_to_le32(queue_type); > + req_p->params.frame_rate = cpu_to_le32(format_info->frame_rate); > + req_p->params.frame_width = cpu_to_le32(format_info->frame_width); > + req_p->params.frame_height = cpu_to_le32(format_info->frame_height); > + req_p->params.format = virtio_video_v4l2_format_to_virtio( > + cpu_to_le32(format_info->fourcc_format)); > + req_p->params.min_buffers = cpu_to_le32(format_info->min_buffers); > + req_p->params.max_buffers = cpu_to_le32(format_info->max_buffers); > + req_p->params.num_planes = cpu_to_le32(format_info->num_planes); > + > + for (i = 0; i < format_info->num_planes; i++) { > + struct virtio_video_plane_format *plane_formats = > + &req_p->params.plane_formats[i]; > + struct video_plane_format *plane_format = > + &format_info->plane_format[i]; > + plane_formats->plane_size = > + cpu_to_le32(plane_format->plane_size); > + plane_formats->stride = cpu_to_le32(plane_format->stride); > + } > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > +static void > +virtio_video_cmd_get_ctrl_profile_cb(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + struct virtio_video_get_control_resp *resp = > + (struct virtio_video_get_control_resp *)vbuf->resp_buf; > + struct virtio_video_control_val_profile *resp_p = NULL; > + struct virtio_video_stream *stream = vbuf->priv; > + struct video_control_info *control = &stream->control; > + > + if (!control) > + return; > + > + resp_p = (void *)((char *) resp + > + sizeof(struct virtio_video_get_control_resp)); > + > + control->profile = le32_to_cpu(resp_p->profile); > + control->is_updated = true; > + wake_up(&vv->wq); > +} > + > +static void > +virtio_video_cmd_get_ctrl_level_cb(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + struct virtio_video_get_control_resp *resp = > + (struct virtio_video_get_control_resp *)vbuf->resp_buf; > + struct virtio_video_control_val_level *resp_p = NULL; > + struct virtio_video_stream *stream = vbuf->priv; > + struct video_control_info *control = &stream->control; > + > + if (!control) > + return; > + > + resp_p = (void *)((char *)resp + > + sizeof(struct virtio_video_get_control_resp)); > + > + control->level = le32_to_cpu(resp_p->level); > + control->is_updated = true; > + wake_up(&vv->wq); > +} > + > +static void > +virtio_video_cmd_get_ctrl_bitrate_cb(struct virtio_video *vv, > + struct virtio_video_vbuffer *vbuf) > +{ > + struct virtio_video_get_control_resp *resp = > + (struct virtio_video_get_control_resp *)vbuf->resp_buf; > + struct virtio_video_control_val_bitrate *resp_p = NULL; > + struct virtio_video_stream *stream = vbuf->priv; > + struct video_control_info *control = &stream->control; > + > + if (!control) > + return; > + > + resp_p = (void *)((char *) resp + > + sizeof(struct virtio_video_get_control_resp)); > + > + control->bitrate = le32_to_cpu(resp_p->bitrate); > + control->is_updated = true; > + wake_up(&vv->wq); > +} > + > +int virtio_video_cmd_get_control(struct virtio_video *vv, > + struct virtio_video_stream *stream, > + uint32_t virtio_ctrl) > +{ > + int ret = 0; > + struct virtio_video_get_control *req_p = NULL; > + struct virtio_video_get_control_resp *resp_p = NULL; > + struct virtio_video_vbuffer *vbuf = NULL; > + size_t resp_size = sizeof(struct virtio_video_get_control_resp); > + virtio_video_resp_cb cb; > + > + if (!vv) > + return -1; > + > + switch (virtio_ctrl) { > + case VIRTIO_VIDEO_CONTROL_PROFILE: > + resp_size += sizeof(struct virtio_video_control_val_profile); > + cb = &virtio_video_cmd_get_ctrl_profile_cb; > + break; > + case VIRTIO_VIDEO_CONTROL_LEVEL: > + resp_size += sizeof(struct virtio_video_control_val_level); > + cb = &virtio_video_cmd_get_ctrl_level_cb; > + break; > + case VIRTIO_VIDEO_CONTROL_BITRATE: > + resp_size += sizeof(struct virtio_video_control_val_bitrate); > + cb = &virtio_video_cmd_get_ctrl_bitrate_cb; > + break; > + default: > + return -1; > + } > + > + req_p = virtio_video_alloc_req_resp(vv, cb, &vbuf, > + sizeof(*req_p), resp_size, NULL); > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_GET_CONTROL); > + req_p->hdr.stream_id = cpu_to_le32(stream->stream_id); > + req_p->control = cpu_to_le32(virtio_ctrl); > + > + resp_p = (struct virtio_video_get_control_resp *)vbuf->resp_buf; > + memset(resp_p, 0, resp_size); > + > + stream->control.is_updated = false; > + > + vbuf->priv = stream; > + ret = virtio_video_queue_cmd_buffer(vv, vbuf); > + if (ret) > + return ret; > + > + ret = wait_event_timeout(vv->wq, stream->control.is_updated, 5 * HZ); > + if (ret == 0) { > + v4l2_err(&vv->v4l2_dev, "timed out waiting for get_params\n"); > + return -1; > + } > + return 0; > +} > + > +int virtio_video_cmd_set_control(struct virtio_video *vv, uint32_t stream_id, > + uint32_t control, uint32_t value) > +{ > + struct virtio_video_set_control *req_p = NULL; > + struct virtio_video_vbuffer *vbuf = NULL; > + struct virtio_video_control_val_level *ctrl_l = NULL; > + struct virtio_video_control_val_profile *ctrl_p = NULL; > + struct virtio_video_control_val_bitrate *ctrl_b = NULL; > + size_t size; > + > + if (!vv || value == 0) > + return -EINVAL; > + > + switch (control) { > + case VIRTIO_VIDEO_CONTROL_PROFILE: > + size = sizeof(struct virtio_video_control_val_profile); > + break; > + case VIRTIO_VIDEO_CONTROL_LEVEL: > + size = sizeof(struct virtio_video_control_val_level); > + break; > + case VIRTIO_VIDEO_CONTROL_BITRATE: > + size = sizeof(struct virtio_video_control_val_bitrate); > + break; > + default: > + return -1; > + } > + > + req_p = virtio_video_alloc_req(vv, &vbuf, size + sizeof(*req_p)); > + if (IS_ERR(req_p)) > + return PTR_ERR(req_p); > + > + req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_SET_CONTROL); > + req_p->hdr.stream_id = cpu_to_le32(stream_id); > + req_p->control = cpu_to_le32(control); > + > + switch (control) { > + case VIRTIO_VIDEO_CONTROL_PROFILE: > + ctrl_p = (void *)((char *)req_p + > + sizeof(struct virtio_video_set_control)); > + ctrl_p->profile = cpu_to_le32(value); > + break; > + case VIRTIO_VIDEO_CONTROL_LEVEL: > + ctrl_l = (void *)((char *)req_p + > + sizeof(struct virtio_video_set_control)); > + ctrl_l->level = cpu_to_le32(value); > + break; > + case VIRTIO_VIDEO_CONTROL_BITRATE: > + ctrl_b = (void *)((char *)req_p + > + sizeof(struct virtio_video_set_control)); > + ctrl_b->bitrate = cpu_to_le32(value); > + break; > + } > + > + return virtio_video_queue_cmd_buffer(vv, vbuf); > +} > + > diff --git a/include/uapi/linux/virtio_ids.h b/include/uapi/linux/virtio_ids.h > index 6d5c3b2d4f4d..89dfc94ecaa3 100644 > --- a/include/uapi/linux/virtio_ids.h > +++ b/include/uapi/linux/virtio_ids.h > @@ -43,5 +43,7 @@ > #define VIRTIO_ID_INPUT 18 /* virtio input */ > #define VIRTIO_ID_VSOCK 19 /* virtio vsock transport */ > #define VIRTIO_ID_CRYPTO 20 /* virtio crypto */ > +#define VIRTIO_ID_VIDEO_ENC 30 /* virtio video encoder */ > +#define VIRTIO_ID_VIDEO_DEC 31 /* virtio video decoder */ > > #endif /* _LINUX_VIRTIO_IDS_H */ > diff --git a/include/uapi/linux/virtio_video.h b/include/uapi/linux/virtio_video.h > new file mode 100644 > index 000000000000..0dd98a2237c6 > --- /dev/null > +++ b/include/uapi/linux/virtio_video.h > @@ -0,0 +1,469 @@ > +/* SPDX-License-Identifier: GPL-2.0+ */ I suspect it's not expected to use GPL licence without exceptions in a UAPI header file: https://www.kernel.org/doc/html/v5.4/process/license-rules.html If GPL is used here, only GPL user programs can include this header file, can't they? So, can we use BSD licence like other virtio headers (e.g. virtio_gpu.h)? Note that I found this program when running /scripts/headers_install.sh. Though it suggested to add "WITH Linux-syscall-note", it shouldn't be the case because this header doesn't provide syscall interface. Best regards, Keiichi > +/* > + * Virtio Video Device > + * > + * This header is BSD licensed so anyone can use the definitions > + * to implement compatible drivers/servers: > + * > + * Redistribution and use in source and binary forms, with or without > + * modification, are permitted provided that the following conditions > + * are met: > + * 1. Redistributions of source code must retain the above copyright > + * notice, this list of conditions and the following disclaimer. > + * 2. Redistributions in binary form must reproduce the above copyright > + * notice, this list of conditions and the following disclaimer in the > + * documentation and/or other materials provided with the distribution. > + * 3. Neither the name of IBM nor the names of its contributors > + * may be used to endorse or promote products derived from this software > + * without specific prior written permission. > + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS > + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT > + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS > + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL IBM OR > + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, > + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT > + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF > + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND > + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, > + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT > + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF > + * SUCH DAMAGE. > + * > + * Copyright (C) 2019 OpenSynergy GmbH. > + */ > + > +#ifndef _UAPI_LINUX_VIRTIO_VIDEO_H > +#define _UAPI_LINUX_VIRTIO_VIDEO_H > + > +#include <linux/types.h> > +#include <linux/virtio_config.h> > + > +/* > + * Feature bits > + */ > + > +/* Guest pages can be used for video buffers. */ > +#define VIRTIO_VIDEO_F_RESOURCE_GUEST_PAGES 0 > +/* > + * The host can process buffers even if they are non-contiguous memory such as > + * scatter-gather lists. > + */ > +#define VIRTIO_VIDEO_F_RESOURCE_NON_CONTIG 1 > + > +/* > + * Image formats > + */ > + > +enum virtio_video_format { > + /* Raw formats */ > + VIRTIO_VIDEO_FORMAT_RAW_MIN = 1, > + VIRTIO_VIDEO_FORMAT_ARGB8888 = VIRTIO_VIDEO_FORMAT_RAW_MIN, > + VIRTIO_VIDEO_FORMAT_BGRA8888, > + VIRTIO_VIDEO_FORMAT_NV12, /* 12 Y/CbCr 4:2:0 */ > + VIRTIO_VIDEO_FORMAT_YUV420, /* 12 YUV 4:2:0 */ > + VIRTIO_VIDEO_FORMAT_YVU420, /* 12 YVU 4:2:0 */ > + VIRTIO_VIDEO_FORMAT_RAW_MAX = VIRTIO_VIDEO_FORMAT_YVU420, > + > + /* Coded formats */ > + VIRTIO_VIDEO_FORMAT_CODED_MIN = 0x1000, > + VIRTIO_VIDEO_FORMAT_MPEG2 = > + VIRTIO_VIDEO_FORMAT_CODED_MIN, /* MPEG-2 Part 2 */ > + VIRTIO_VIDEO_FORMAT_MPEG4, /* MPEG-4 Part 2 */ > + VIRTIO_VIDEO_FORMAT_H264, /* H.264 */ > + VIRTIO_VIDEO_FORMAT_HEVC, /* HEVC aka H.265*/ > + VIRTIO_VIDEO_FORMAT_VP8, /* VP8 */ > + VIRTIO_VIDEO_FORMAT_VP9, /* VP9 */ > + VIRTIO_VIDEO_FORMAT_CODED_MAX = VIRTIO_VIDEO_FORMAT_VP9, > +}; > + > +enum virtio_video_profile { > + /* H.264 */ > + VIRTIO_VIDEO_PROFILE_H264_MIN = 0x100, > + VIRTIO_VIDEO_PROFILE_H264_BASELINE = VIRTIO_VIDEO_PROFILE_H264_MIN, > + VIRTIO_VIDEO_PROFILE_H264_MAIN, > + VIRTIO_VIDEO_PROFILE_H264_EXTENDED, > + VIRTIO_VIDEO_PROFILE_H264_HIGH, > + VIRTIO_VIDEO_PROFILE_H264_HIGH10PROFILE, > + VIRTIO_VIDEO_PROFILE_H264_HIGH422PROFILE, > + VIRTIO_VIDEO_PROFILE_H264_HIGH444PREDICTIVEPROFILE, > + VIRTIO_VIDEO_PROFILE_H264_SCALABLEBASELINE, > + VIRTIO_VIDEO_PROFILE_H264_SCALABLEHIGH, > + VIRTIO_VIDEO_PROFILE_H264_STEREOHIGH, > + VIRTIO_VIDEO_PROFILE_H264_MULTIVIEWHIGH, > + VIRTIO_VIDEO_PROFILE_H264_MAX = VIRTIO_VIDEO_PROFILE_H264_MULTIVIEWHIGH, > + > + /* HEVC */ > + VIRTIO_VIDEO_PROFILE_HEVC_MIN = 0x200, > + VIRTIO_VIDEO_PROFILE_HEVC_MAIN = VIRTIO_VIDEO_PROFILE_HEVC_MIN, > + VIRTIO_VIDEO_PROFILE_HEVC_MAIN10, > + VIRTIO_VIDEO_PROFILE_HEVC_MAIN_STILL_PICTURE, > + VIRTIO_VIDEO_PROFILE_HEVC_MAX = > + VIRTIO_VIDEO_PROFILE_HEVC_MAIN_STILL_PICTURE, > + > + /* VP8 */ > + VIRTIO_VIDEO_PROFILE_VP8_MIN = 0x300, > + VIRTIO_VIDEO_PROFILE_VP8_PROFILE0 = VIRTIO_VIDEO_PROFILE_VP8_MIN, > + VIRTIO_VIDEO_PROFILE_VP8_PROFILE1, > + VIRTIO_VIDEO_PROFILE_VP8_PROFILE2, > + VIRTIO_VIDEO_PROFILE_VP8_PROFILE3, > + VIRTIO_VIDEO_PROFILE_VP8_MAX = VIRTIO_VIDEO_PROFILE_VP8_PROFILE3, > + > + /* VP9 */ > + VIRTIO_VIDEO_PROFILE_VP9_MIN = 0x400, > + VIRTIO_VIDEO_PROFILE_VP9_PROFILE0 = VIRTIO_VIDEO_PROFILE_VP9_MIN, > + VIRTIO_VIDEO_PROFILE_VP9_PROFILE1, > + VIRTIO_VIDEO_PROFILE_VP9_PROFILE2, > + VIRTIO_VIDEO_PROFILE_VP9_PROFILE3, > + VIRTIO_VIDEO_PROFILE_VP9_MAX = VIRTIO_VIDEO_PROFILE_VP9_PROFILE3, > +}; > + > +enum virtio_video_level { > + /* H.264 */ > + VIRTIO_VIDEO_LEVEL_H264_MIN = 0x100, > + VIRTIO_VIDEO_LEVEL_H264_1_0 = VIRTIO_VIDEO_LEVEL_H264_MIN, > + VIRTIO_VIDEO_LEVEL_H264_1_1, > + VIRTIO_VIDEO_LEVEL_H264_1_2, > + VIRTIO_VIDEO_LEVEL_H264_1_3, > + VIRTIO_VIDEO_LEVEL_H264_2_0, > + VIRTIO_VIDEO_LEVEL_H264_2_1, > + VIRTIO_VIDEO_LEVEL_H264_2_2, > + VIRTIO_VIDEO_LEVEL_H264_3_0, > + VIRTIO_VIDEO_LEVEL_H264_3_1, > + VIRTIO_VIDEO_LEVEL_H264_3_2, > + VIRTIO_VIDEO_LEVEL_H264_4_0, > + VIRTIO_VIDEO_LEVEL_H264_4_1, > + VIRTIO_VIDEO_LEVEL_H264_4_2, > + VIRTIO_VIDEO_LEVEL_H264_5_0, > + VIRTIO_VIDEO_LEVEL_H264_5_1, > + VIRTIO_VIDEO_LEVEL_H264_MAX = VIRTIO_VIDEO_LEVEL_H264_5_1, > +}; > + > +/* > + * Config > + */ > + > +struct virtio_video_config { > + __le32 version; > + __le32 max_caps_length; > + __le32 max_resp_length; > +}; > + > +/* > + * Commands > + */ > + > +enum virtio_video_cmd_type { > + /* Command */ > + VIRTIO_VIDEO_CMD_QUERY_CAPABILITY = 0x0100, > + VIRTIO_VIDEO_CMD_STREAM_CREATE, > + VIRTIO_VIDEO_CMD_STREAM_DESTROY, > + VIRTIO_VIDEO_CMD_STREAM_DRAIN, > + VIRTIO_VIDEO_CMD_RESOURCE_CREATE, > + VIRTIO_VIDEO_CMD_RESOURCE_QUEUE, > + VIRTIO_VIDEO_CMD_RESOURCE_DESTROY_ALL, > + VIRTIO_VIDEO_CMD_QUEUE_CLEAR, > + VIRTIO_VIDEO_CMD_GET_PARAMS, > + VIRTIO_VIDEO_CMD_SET_PARAMS, > + VIRTIO_VIDEO_CMD_QUERY_CONTROL, > + VIRTIO_VIDEO_CMD_GET_CONTROL, > + VIRTIO_VIDEO_CMD_SET_CONTROL, > + > + /* Response */ > + VIRTIO_VIDEO_RESP_OK_NODATA = 0x0200, > + VIRTIO_VIDEO_RESP_OK_QUERY_CAPABILITY, > + VIRTIO_VIDEO_RESP_OK_RESOURCE_QUEUE, > + VIRTIO_VIDEO_RESP_OK_GET_PARAMS, > + VIRTIO_VIDEO_RESP_OK_QUERY_CONTROL, > + VIRTIO_VIDEO_RESP_OK_GET_CONTROL, > + > + VIRTIO_VIDEO_RESP_ERR_INVALID_OPERATION = 0x0300, > + VIRTIO_VIDEO_RESP_ERR_OUT_OF_MEMORY, > + VIRTIO_VIDEO_RESP_ERR_INVALID_STREAM_ID, > + VIRTIO_VIDEO_RESP_ERR_INVALID_RESOURCE_ID, > + VIRTIO_VIDEO_RESP_ERR_INVALID_PARAMETER, > + VIRTIO_VIDEO_RESP_ERR_UNSUPPORTED_CONTROL, > +}; > + > +struct virtio_video_cmd_hdr { > + __le32 type; /* One of enum virtio_video_cmd_type */ > + __le32 stream_id; > +}; > + > +/* VIRTIO_VIDEO_CMD_QUERY_CAPABILITY */ > +enum virtio_video_queue_type { > + VIRTIO_VIDEO_QUEUE_TYPE_INPUT = 0x100, > + VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT, > +}; > + > +struct virtio_video_query_capability { > + struct virtio_video_cmd_hdr hdr; > + __le32 queue_type; /* One of VIRTIO_VIDEO_QUEUE_TYPE_* types */ > + __u8 padding[4]; > +}; > + > +enum virtio_video_planes_layout_flag { > + VIRTIO_VIDEO_PLANES_LAYOUT_SINGLE_BUFFER = 1 << 0, > + VIRTIO_VIDEO_PLANES_LAYOUT_PER_PLANE = 1 << 1, > +}; > + > +struct virtio_video_format_range { > + __le32 min; > + __le32 max; > + __le32 step; > + __u8 padding[4]; > +}; > + > +struct virtio_video_format_frame { > + struct virtio_video_format_range width; > + struct virtio_video_format_range height; > + __le32 num_rates; > + __u8 padding[4]; > + /* Followed by struct virtio_video_format_range frame_rates[] */ > +}; > + > +struct virtio_video_format_desc { > + __le64 mask; > + __le32 format; /* One of VIRTIO_VIDEO_FORMAT_* types */ > + __le32 planes_layout; /* Bitmask with VIRTIO_VIDEO_PLANES_LAYOUT_* */ > + __le32 plane_align; > + __le32 num_frames; > + /* Followed by struct virtio_video_format_frame frames[] */ > +}; > + > +struct virtio_video_query_capability_resp { > + struct virtio_video_cmd_hdr hdr; > + __le32 num_descs; > + __u8 padding[4]; > + /* Followed by struct virtio_video_format_desc descs[] */ > +}; > + > +/* VIRTIO_VIDEO_CMD_STREAM_CREATE */ > +enum virtio_video_mem_type { > + VIRTIO_VIDEO_MEM_TYPE_GUEST_PAGES, > +}; > + > +struct virtio_video_stream_create { > + struct virtio_video_cmd_hdr hdr; > + __le32 in_mem_type; /* One of VIRTIO_VIDEO_MEM_TYPE_* types */ > + __le32 out_mem_type; /* One of VIRTIO_VIDEO_MEM_TYPE_* types */ > + __le32 coded_format; /* One of VIRTIO_VIDEO_FORMAT_* types */ > + __u8 padding[4]; > + __u8 tag[64]; > +}; > + > +/* VIRTIO_VIDEO_CMD_STREAM_DESTROY */ > +struct virtio_video_stream_destroy { > + struct virtio_video_cmd_hdr hdr; > +}; > + > +/* VIRTIO_VIDEO_CMD_STREAM_DRAIN */ > +struct virtio_video_stream_drain { > + struct virtio_video_cmd_hdr hdr; > +}; > + > +/* VIRTIO_VIDEO_CMD_RESOURCE_CREATE */ > +struct virtio_video_mem_entry { > + __le64 addr; > + __le32 length; > + __u8 padding[4]; > +}; > + > +#define VIRTIO_VIDEO_MAX_PLANES 8 > + > +struct virtio_video_resource_create { > + struct virtio_video_cmd_hdr hdr; > + __le32 queue_type; /* One of VIRTIO_VIDEO_QUEUE_TYPE_* types */ > + __le32 resource_id; > + __le32 planes_layout; > + __le32 num_planes; > + __le32 plane_offsets[VIRTIO_VIDEO_MAX_PLANES]; > + __le32 num_entries[VIRTIO_VIDEO_MAX_PLANES]; > + /* Followed by struct virtio_video_mem_entry entries[] */ > +}; > + > +/* VIRTIO_VIDEO_CMD_RESOURCE_QUEUE */ > +struct virtio_video_resource_queue { > + struct virtio_video_cmd_hdr hdr; > + __le32 queue_type; /* One of VIRTIO_VIDEO_QUEUE_TYPE_* types */ > + __le32 resource_id; > + __le64 timestamp; > + __le32 num_data_sizes; > + __le32 data_sizes[VIRTIO_VIDEO_MAX_PLANES]; > + __u8 padding[4]; > +}; > + > +enum virtio_video_buffer_flag { > + VIRTIO_VIDEO_BUFFER_FLAG_ERR = 0x0001, > + VIRTIO_VIDEO_BUFFER_FLAG_EOS = 0x0002, > + > + /* Encoder only */ > + VIRTIO_VIDEO_BUFFER_FLAG_IFRAME = 0x0004, > + VIRTIO_VIDEO_BUFFER_FLAG_PFRAME = 0x0008, > + VIRTIO_VIDEO_BUFFER_FLAG_BFRAME = 0x0010, > +}; > + > +struct virtio_video_resource_queue_resp { > + struct virtio_video_cmd_hdr hdr; > + __le64 timestamp; > + __le32 flags; /* One of VIRTIO_VIDEO_BUFFER_FLAG_* flags */ > + __le32 size; /* Encoded size */ > +}; > + > +/* VIRTIO_VIDEO_CMD_RESOURCE_DESTROY_ALL */ > +struct virtio_video_resource_destroy_all { > + struct virtio_video_cmd_hdr hdr; > + __le32 queue_type; /* One of VIRTIO_VIDEO_QUEUE_TYPE_* types */ > + __u8 padding[4]; > +}; > + > +/* VIRTIO_VIDEO_CMD_QUEUE_CLEAR */ > +struct virtio_video_queue_clear { > + struct virtio_video_cmd_hdr hdr; > + __le32 queue_type; /* One of VIRTIO_VIDEO_QUEUE_TYPE_* types */ > + __u8 padding[4]; > +}; > + > +/* VIRTIO_VIDEO_CMD_GET_PARAMS */ > +struct virtio_video_plane_format { > + __le32 plane_size; > + __le32 stride; > +}; > + > +struct virtio_video_crop { > + __le32 left; > + __le32 top; > + __le32 width; > + __le32 height; > +}; > + > +struct virtio_video_params { > + __le32 queue_type; /* One of VIRTIO_VIDEO_QUEUE_TYPE_* types */ > + __le32 format; /* One of VIRTIO_VIDEO_FORMAT_* types */ > + __le32 frame_width; > + __le32 frame_height; > + __le32 min_buffers; > + __le32 max_buffers; > + struct virtio_video_crop crop; > + __le32 frame_rate; > + __le32 num_planes; > + struct virtio_video_plane_format plane_formats[VIRTIO_VIDEO_MAX_PLANES]; > +}; > + > +struct virtio_video_get_params { > + struct virtio_video_cmd_hdr hdr; > + __le32 queue_type; /* One of VIRTIO_VIDEO_QUEUE_TYPE_* types */ > + __u8 padding[4]; > +}; > + > +struct virtio_video_get_params_resp { > + struct virtio_video_cmd_hdr hdr; > + struct virtio_video_params params; > +}; > + > +/* VIRTIO_VIDEO_CMD_SET_PARAMS */ > +struct virtio_video_set_params { > + struct virtio_video_cmd_hdr hdr; > + struct virtio_video_params params; > +}; > + > +/* VIRTIO_VIDEO_CMD_QUERY_CONTROL */ > +enum virtio_video_control_type { > + VIRTIO_VIDEO_CONTROL_BITRATE = 1, > + VIRTIO_VIDEO_CONTROL_PROFILE, > + VIRTIO_VIDEO_CONTROL_LEVEL, > +}; > + > +struct virtio_video_query_control_profile { > + __le32 format; /* One of VIRTIO_VIDEO_FORMAT_* */ > + __u8 padding[4]; > +}; > + > +struct virtio_video_query_control_level { > + __le32 format; /* One of VIRTIO_VIDEO_FORMAT_* */ > + __u8 padding[4]; > +}; > + > +struct virtio_video_query_control { > + struct virtio_video_cmd_hdr hdr; > + __le32 control; /* One of VIRTIO_VIDEO_CONTROL_* types */ > + __u8 padding[4]; > + /* > + * Followed by a value of struct virtio_video_query_control_* > + * in accordance with the value of control. > + */ > +}; > + > +struct virtio_video_query_control_resp_profile { > + __le32 num; > + __u8 padding[4]; > + /* Followed by an array le32 profiles[] */ > +}; > + > +struct virtio_video_query_control_resp_level { > + __le32 num; > + __u8 padding[4]; > + /* Followed by an array le32 level[] */ > +}; > + > +struct virtio_video_query_control_resp { > + struct virtio_video_cmd_hdr hdr; > + /* Followed by one of struct virtio_video_query_control_resp_* */ > +}; > + > +/* VIRTIO_VIDEO_CMD_GET_CONTROL */ > +struct virtio_video_get_control { > + struct virtio_video_cmd_hdr hdr; > + __le32 control; /* One of VIRTIO_VIDEO_CONTROL_* types */ > + __u8 padding[4]; > +}; > + > +struct virtio_video_control_val_bitrate { > + __le32 bitrate; > + __u8 padding[4]; > +}; > + > +struct virtio_video_control_val_profile { > + __le32 profile; > + __u8 padding[4]; > +}; > + > +struct virtio_video_control_val_level { > + __le32 level; > + __u8 padding[4]; > +}; > + > +struct virtio_video_get_control_resp { > + struct virtio_video_cmd_hdr hdr; > + /* Followed by one of struct virtio_video_control_val_* */ > +}; > + > +/* VIRTIO_VIDEO_CMD_SET_CONTROL */ > +struct virtio_video_set_control { > + struct virtio_video_cmd_hdr hdr; > + __le32 control; /* One of VIRTIO_VIDEO_CONTROL_* types */ > + __u8 padding[4]; > + /* Followed by one of struct virtio_video_control_val_* */ > +}; > + > +struct virtio_video_set_control_resp { > + struct virtio_video_cmd_hdr hdr; > +}; > + > +/* > + * Events > + */ > + > +enum virtio_video_event_type { > + /* For all devices */ > + VIRTIO_VIDEO_EVENT_ERROR = 0x0100, > + > + /* For decoder only */ > + VIRTIO_VIDEO_EVENT_DECODER_RESOLUTION_CHANGED = 0x0200, > +}; > + > +struct virtio_video_event { > + __le32 event_type; /* One of VIRTIO_VIDEO_EVENT_* types */ > + __le32 stream_id; > +}; > + > +#endif /* _UAPI_LINUX_VIRTIO_VIDEO_H */ > -- > 2.25.0 > _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/spice-devel