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authorMichele Paolino <m.paolino@virtualopensystems.com>2023-11-14 18:07:09 +0100
committerMichele Paolino <m.paolino@virtualopensystems.com>2023-12-13 10:27:55 +0000
commitb05512b81bbe1c90b71da9c571e742f162fc0575 (patch)
treedea9b67ff4dae3e227943382dd7b0b0565dc39d1 /meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_vq.c
parent31d4011207be008333c1945f18bb922b13816462 (diff)
CAN, GPIO, RNG vhost-devices for virtio-loopback [v6]quillback_16.92.0quillback/16.92.016.92.0
This patch adds key components of the viritio-loopback architecture: - kernel-module-virtio-loopback: the virtio loopback kernel driver - CAN, GPIO and RNG vhost-user devices from meta-virtualization (commit a215d8320edee0a317a6511e7e2efa5bba867486) Notes: - libgpiod, comes from meta-openembedded commit 3029554ceb0b0bb52a8d8ec3f0a75c5113662fe6 - cleaned eg-virt from unused drivers (kernel-module-virtio-video) Bug-AGL: SPEC-4834 V2 changes: - related meta-virtualization commit message added in the cover letter - updated libgpio recipe to v2.1 - SPEC reference added in cover letter v3 - add vhost-device-can preliminary version. This is placed here with the objective to share the link when proposing the new device to the rust-vmm/vhost-device community - remove cargo-update-recipe-crates includes in bb file because it is not supported by the rust mixin layer - vhost-device folder README changes v4 - fixed libgpiod required version - tested ref hw and qemu x86/64 builds - vsock, scsi and i2c rust devices removed from the build as they are not yet integrated in virtiod-loopback - cleaned-up kernel modules kernel-module-virtio-video and gstreamer1.0-plugins-bad - virtio-loopback-driver set to 2-or-later v5 - Merge with Jan-Simon version v4: - remove broken kernel-module-virtio-video - use FEATURE_PACKAGES instead of IMAGE_INSTALL:append - rename virtio-loopback-driver.bb to kernel-module-virtio-loopback_git.bb for consistency v6 - adding version in the title - removing MODULE_GIT_REPOSITORY in kernel-modules Change-Id: Id6cc58e777b9edad03b6c50d0dddaac8601edeaf Signed-off-by: Michele Paolino <m.paolino@virtualopensystems.com> Signed-off-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Diffstat (limited to 'meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_vq.c')
-rw-r--r--meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_vq.c981
1 files changed, 0 insertions, 981 deletions
diff --git a/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_vq.c b/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_vq.c
deleted file mode 100644
index f3c97c7e..00000000
--- a/meta-egvirt/recipes-kernel/kernel-module-virtio-video/files/virtio_video_vq.c
+++ /dev/null
@@ -1,981 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/* Driver for virtio video device.
- *
- * Copyright 2020 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)
-
-static int virtio_video_queue_event_buffer(struct virtio_video_device *vvd,
- struct virtio_video_event *evt);
-static void virtio_video_handle_event(struct virtio_video_device *vvd,
- struct virtio_video_event *evt);
-
-void virtio_video_resource_id_get(struct virtio_video_device *vvd, uint32_t *id)
-{
- int handle;
-
- idr_preload(GFP_KERNEL);
- spin_lock(&vvd->resource_idr_lock);
- handle = idr_alloc(&vvd->resource_idr, NULL, 1, 0, GFP_NOWAIT);
- spin_unlock(&vvd->resource_idr_lock);
- idr_preload_end();
- *id = handle;
-}
-
-void virtio_video_resource_id_put(struct virtio_video_device *vvd, uint32_t id)
-{
- spin_lock(&vvd->resource_idr_lock);
- idr_remove(&vvd->resource_idr, id);
- spin_unlock(&vvd->resource_idr_lock);
-}
-
-void virtio_video_stream_id_get(struct virtio_video_device *vvd,
- struct virtio_video_stream *stream,
- uint32_t *id)
-{
- int handle;
-
- idr_preload(GFP_KERNEL);
- spin_lock(&vvd->stream_idr_lock);
- handle = idr_alloc(&vvd->stream_idr, stream, 1, 0, 0);
- spin_unlock(&vvd->stream_idr_lock);
- idr_preload_end();
- *id = handle;
-}
-
-void virtio_video_stream_id_put(struct virtio_video_device *vvd, uint32_t id)
-{
- spin_lock(&vvd->stream_idr_lock);
- idr_remove(&vvd->stream_idr, id);
- spin_unlock(&vvd->stream_idr_lock);
-}
-
-static bool vbuf_is_pending(struct virtio_video_device *vvd,
- struct virtio_video_vbuffer *vbuf)
-{
- struct virtio_video_vbuffer *entry;
-
- list_for_each_entry(entry, &vvd->pending_vbuf_list, pending_list_entry)
- {
- if (entry == vbuf && entry->id == vbuf->id)
- return true;
- }
-
- return false;
-}
-
-static void free_vbuf(struct virtio_video_device *vvd,
- struct virtio_video_vbuffer *vbuf)
-{
- list_del(&vbuf->pending_list_entry);
- kfree(vbuf->data_buf);
- kmem_cache_free(vvd->vbufs, vbuf);
-}
-
-void virtio_video_cmd_cb(struct virtqueue *vq)
-{
- struct virtio_video_device *vvd = vq->vdev->priv;
- struct virtio_video_vbuffer *vbuf;
- unsigned long flags;
- unsigned int len;
-
- spin_lock_irqsave(&vvd->commandq.qlock, flags);
- while (vvd->commandq.ready) {
- virtqueue_disable_cb(vq);
-
- while ((vbuf = virtqueue_get_buf(vq, &len))) {
- if (!vbuf_is_pending(vvd, vbuf))
- continue;
-
- if (vbuf->resp_cb)
- vbuf->resp_cb(vvd, vbuf);
-
- if (vbuf->is_sync)
- complete(&vbuf->reclaimed);
- else
- free_vbuf(vvd, vbuf);
- }
-
- if (unlikely(virtqueue_is_broken(vq)))
- break;
-
- if (virtqueue_enable_cb(vq))
- break;
- }
- spin_unlock_irqrestore(&vvd->commandq.qlock, flags);
-
- wake_up(&vvd->commandq.reclaim_queue);
-}
-
-void virtio_video_process_events(struct work_struct *work)
-{
- struct virtio_video_device *vvd = container_of(work,
- struct virtio_video_device, eventq.work);
- struct virtqueue *vq = vvd->eventq.vq;
- struct virtio_video_event *evt;
- unsigned int len;
-
- while (vvd->eventq.ready) {
- virtqueue_disable_cb(vq);
-
- while ((evt = virtqueue_get_buf(vq, &len))) {
- virtio_video_handle_event(vvd, evt);
- virtio_video_queue_event_buffer(vvd, evt);
- }
-
- if (unlikely(virtqueue_is_broken(vq)))
- break;
-
- if (virtqueue_enable_cb(vq))
- break;
- }
-}
-
-void virtio_video_event_cb(struct virtqueue *vq)
-{
- struct virtio_video_device *vvd = vq->vdev->priv;
-
- schedule_work(&vvd->eventq.work);
-}
-
-static struct virtio_video_vbuffer *
-virtio_video_get_vbuf(struct virtio_video_device *vvd, int size, int resp_size,
- void *resp_buf, virtio_video_resp_cb resp_cb)
-{
- struct virtio_video_vbuffer *vbuf;
-
- vbuf = kmem_cache_alloc(vvd->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;
-}
-
-int virtio_video_alloc_vbufs(struct virtio_video_device *vvd)
-{
- vvd->vbufs =
- kmem_cache_create("virtio-video-vbufs", VBUFFER_SIZE,
- __alignof__(struct virtio_video_vbuffer), 0,
- NULL);
- if (!vvd->vbufs)
- return -ENOMEM;
-
- return 0;
-}
-
-void virtio_video_free_vbufs(struct virtio_video_device *vvd)
-{
- struct virtio_video_vbuffer *vbuf;
-
- /* Release command buffers. Operation on vbufs here is lock safe,
- since before device was deinitialized and queues was stopped
- (in not ready state) */
- while ((vbuf = virtqueue_detach_unused_buf(vvd->commandq.vq))) {
- if (vbuf_is_pending(vvd, vbuf))
- free_vbuf(vvd, vbuf);
- }
-
- kmem_cache_destroy(vvd->vbufs);
- vvd->vbufs = NULL;
-
- /* Release event buffers */
- while (virtqueue_detach_unused_buf(vvd->eventq.vq));
-
- kfree(vvd->evts);
- vvd->evts = NULL;
-}
-
-static void *virtio_video_alloc_req(struct virtio_video_device *vvd,
- struct virtio_video_vbuffer **vbuffer_p,
- int size)
-{
- struct virtio_video_vbuffer *vbuf;
-
- vbuf = virtio_video_get_vbuf(vvd, 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_device *vvd,
- 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(vvd, req_size, resp_size, resp_buf, cb);
- if (IS_ERR(vbuf)) {
- *vbuffer_p = NULL;
- return ERR_CAST(vbuf);
- }
- *vbuffer_p = vbuf;
-
- return vbuf->buf;
-}
-
-static int
-virtio_video_queue_cmd_buffer(struct virtio_video_device *vvd,
- struct virtio_video_vbuffer *vbuf)
-{
- unsigned long flags;
- struct virtqueue *vq = vvd->commandq.vq;
- struct scatterlist *sgs[3], vreq, vout, vresp;
- int outcnt = 0, incnt = 0;
- int ret;
-
- if (!vvd->commandq.ready)
- return -ENODEV;
-
- spin_lock_irqsave(&vvd->commandq.qlock, flags);
-
- vbuf->id = vvd->vbufs_sent++;
- list_add_tail(&vbuf->pending_list_entry, &vvd->pending_vbuf_list);
-
- 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_irqrestore(&vvd->commandq.qlock, flags);
- wait_event(vvd->commandq.reclaim_queue, vq->num_free);
- spin_lock_irqsave(&vvd->commandq.qlock, flags);
- goto retry;
- } else {
- virtqueue_kick(vq);
- }
-
- spin_unlock_irqrestore(&vvd->commandq.qlock, flags);
-
- return ret;
-}
-
-static int
-virtio_video_queue_cmd_buffer_sync(struct virtio_video_device *vvd,
- struct virtio_video_vbuffer *vbuf)
-{
- int ret;
- unsigned long rem;
- unsigned long flags;
-
- vbuf->is_sync = true;
- init_completion(&vbuf->reclaimed);
-
- ret = virtio_video_queue_cmd_buffer(vvd, vbuf);
- if (ret)
- return ret;
-
- rem = wait_for_completion_timeout(&vbuf->reclaimed, 5 * HZ);
- if (rem == 0)
- ret = -ETIMEDOUT;
-
- spin_lock_irqsave(&vvd->commandq.qlock, flags);
- if (vbuf_is_pending(vvd, vbuf))
- free_vbuf(vvd, vbuf);
- spin_unlock_irqrestore(&vvd->commandq.qlock, flags);
-
- return ret;
-}
-
-static int virtio_video_queue_event_buffer(struct virtio_video_device *vvd,
- struct virtio_video_event *evt)
-{
- int ret;
- struct scatterlist sg;
- struct virtqueue *vq = vvd->eventq.vq;
-
- memset(evt, 0, sizeof(struct virtio_video_event));
- sg_init_one(&sg, evt, sizeof(struct virtio_video_event));
-
- ret = virtqueue_add_inbuf(vq, &sg, 1, evt, GFP_KERNEL);
- if (ret) {
- v4l2_err(&vvd->v4l2_dev, "failed to queue event buffer\n");
- return ret;
- }
-
- virtqueue_kick(vq);
-
- return 0;
-}
-
-static void virtio_video_handle_event(struct virtio_video_device *vvd,
- struct virtio_video_event *evt)
-{
- int ret;
- struct virtio_video_stream *stream;
- uint32_t stream_id = evt->stream_id;
- struct video_device *vd = &vvd->video_dev;
-
- mutex_lock(vd->lock);
-
- stream = idr_find(&vvd->stream_idr, stream_id);
- if (!stream) {
- v4l2_warn(&vvd->v4l2_dev, "stream_id=%u not found for event\n",
- stream_id);
- mutex_unlock(vd->lock);
- return;
- }
-
- switch (le32_to_cpu(evt->event_type)) {
- case VIRTIO_VIDEO_EVENT_DECODER_RESOLUTION_CHANGED:
- v4l2_dbg(1, vvd->debug, &vvd->v4l2_dev,
- "stream_id=%u: resolution change event\n", stream_id);
- virtio_video_cmd_get_params(vvd, stream,
- VIRTIO_VIDEO_QUEUE_TYPE_OUTPUT);
- virtio_video_queue_res_chg_event(stream);
- if (virtio_video_state(stream) == STREAM_STATE_INIT) {
- virtio_video_state_update(stream,
- STREAM_STATE_DYNAMIC_RES_CHANGE);
- wake_up(&vvd->wq);
- }
- break;
- case VIRTIO_VIDEO_EVENT_ERROR:
- v4l2_err(&vvd->v4l2_dev, "stream_id=%i: error event\n",
- stream_id);
- virtio_video_state_update(stream, STREAM_STATE_ERROR);
- virtio_video_handle_error(stream);
- break;
- default:
- v4l2_warn(&vvd->v4l2_dev, "stream_id=%i: unknown event\n",
- stream_id);
- break;
- }
-
- mutex_unlock(vd->lock);
-}
-
-int virtio_video_alloc_events(struct virtio_video_device *vvd)
-{
- int ret;
- size_t i;
- struct virtio_video_event *evts;
- size_t num = vvd->eventq.vq->num_free;
-
- evts = kzalloc(num * sizeof(struct virtio_video_event), GFP_KERNEL);
- if (!evts) {
- v4l2_err(&vvd->v4l2_dev, "failed to alloc event buffers!!!\n");
- return -ENOMEM;
- }
- vvd->evts = evts;
-
- for (i = 0; i < num; i++) {
- ret = virtio_video_queue_event_buffer(vvd, &evts[i]);
- if (ret) {
- v4l2_err(&vvd->v4l2_dev,
- "failed to queue event buffer\n");
- return ret;
- }
- }
-
- return 0;
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int virtio_video_cmd_stream_create(struct virtio_video_device *vvd,
- 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(vvd, &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);
- if (strscpy(req_p->tag, tag, sizeof(req_p->tag) - 1) < 0)
- v4l2_err(&vvd->v4l2_dev, "failed to copy stream tag\n");
- req_p->tag[sizeof(req_p->tag) - 1] = 0;
-
- return virtio_video_queue_cmd_buffer(vvd, vbuf);
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int virtio_video_cmd_stream_destroy(struct virtio_video_device *vvd,
- uint32_t stream_id)
-{
- struct virtio_video_stream_destroy *req_p;
- struct virtio_video_vbuffer *vbuf;
-
- req_p = virtio_video_alloc_req(vvd, &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(vvd, vbuf);
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int virtio_video_cmd_stream_drain(struct virtio_video_device *vvd,
- uint32_t stream_id)
-{
- struct virtio_video_stream_drain *req_p;
- struct virtio_video_vbuffer *vbuf;
-
- req_p = virtio_video_alloc_req(vvd, &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(vvd, vbuf);
-}
-
-int virtio_video_cmd_resource_attach(struct virtio_video_device *vvd,
- uint32_t stream_id, uint32_t resource_id,
- enum virtio_video_queue_type queue_type,
- void *buf, size_t buf_size)
-{
- struct virtio_video_resource_attach *req_p;
- struct virtio_video_vbuffer *vbuf;
-
- req_p = virtio_video_alloc_req(vvd, &vbuf, sizeof(*req_p));
- if (IS_ERR(req_p))
- return PTR_ERR(req_p);
-
- req_p->cmd_type = cpu_to_le32(VIRTIO_VIDEO_CMD_RESOURCE_ATTACH);
- req_p->stream_id = cpu_to_le32(stream_id);
- req_p->queue_type = cpu_to_le32(queue_type);
- req_p->resource_id = cpu_to_le32(resource_id);
-
- vbuf->data_buf = buf;
- vbuf->data_size = buf_size;
-
- return virtio_video_queue_cmd_buffer(vvd, vbuf);
-}
-
-int virtio_video_cmd_queue_detach_resources(struct virtio_video_device *vvd,
- struct virtio_video_stream *stream,
- enum virtio_video_queue_type queue_type)
-{
- int ret;
- struct virtio_video_queue_detach_resources *req_p;
- struct virtio_video_vbuffer *vbuf;
-
- req_p = virtio_video_alloc_req(vvd, &vbuf, sizeof(*req_p));
- if (IS_ERR(req_p))
- return PTR_ERR(req_p);
-
- req_p->cmd_type = cpu_to_le32(VIRTIO_VIDEO_CMD_QUEUE_DETACH_RESOURCES);
- req_p->stream_id = cpu_to_le32(stream->stream_id);
- req_p->queue_type = cpu_to_le32(queue_type);
-
- ret = virtio_video_queue_cmd_buffer_sync(vvd, vbuf);
- if (ret == -ETIMEDOUT)
- v4l2_err(&vvd->v4l2_dev,
- "timed out waiting for resource destruction for %s\n",
- (queue_type == VIRTIO_VIDEO_QUEUE_TYPE_INPUT) ?
- "OUTPUT" : "CAPTURE");
- return ret;
-}
-
-static void
-virtio_video_cmd_resource_queue_cb(struct virtio_video_device *vvd,
- struct virtio_video_vbuffer *vbuf)
-{
- uint32_t flags;
- 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);
- timestamp = le64_to_cpu(resp->timestamp);
-
- virtio_video_buf_done(virtio_vb, flags, timestamp, resp->data_sizes);
-}
-
-int virtio_video_cmd_resource_queue(struct virtio_video_device *vvd,
- uint32_t stream_id,
- struct virtio_video_buffer *virtio_vb,
- uint32_t data_size[],
- uint8_t num_data_size,
- enum virtio_video_queue_type queue_type)
-{
- 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(vvd,
- &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->cmd_type = cpu_to_le32(VIRTIO_VIDEO_CMD_RESOURCE_QUEUE);
- req_p->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->flags = 0;
- 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(vvd, vbuf);
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int virtio_video_cmd_queue_clear(struct virtio_video_device *vvd,
- struct virtio_video_stream *stream,
- enum virtio_video_queue_type queue_type)
-{
- int ret;
- struct virtio_video_queue_clear *req_p;
- struct virtio_video_vbuffer *vbuf;
-
- req_p = virtio_video_alloc_req(vvd, &vbuf, sizeof(*req_p));
- 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);
-
- ret = virtio_video_queue_cmd_buffer_sync(vvd, vbuf);
- if (ret == -ETIMEDOUT)
- v4l2_err(&vvd->v4l2_dev,
- "timed out waiting for %s queue clear\n",
- (queue_type == VIRTIO_VIDEO_QUEUE_TYPE_INPUT) ?
- "OUTPUT" : "CAPTURE");
- return ret;
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int virtio_video_cmd_query_capability(struct virtio_video_device *vvd,
- void *resp_buf, size_t resp_size,
- enum virtio_video_queue_type queue_type)
-{
- int ret;
- struct virtio_video_query_capability *req_p;
- struct virtio_video_vbuffer *vbuf;
-
- req_p = virtio_video_alloc_req_resp(vvd, NULL, &vbuf, sizeof(*req_p),
- resp_size, resp_buf);
- if (IS_ERR(req_p))
- return PTR_ERR(req_p);
-
- req_p->hdr.type = cpu_to_le32(VIRTIO_VIDEO_CMD_QUERY_CAPABILITY);
- req_p->queue_type = cpu_to_le32(queue_type);
-
- ret = virtio_video_queue_cmd_buffer_sync(vvd, vbuf);
- if (ret == -ETIMEDOUT)
- v4l2_err(&vvd->v4l2_dev,
- "timed out waiting for capabilities for %s\n",
- (queue_type == VIRTIO_VIDEO_QUEUE_TYPE_INPUT) ?
- "OUTPUT" : "CAPTURE");
- return ret;
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int virtio_video_query_control_level(struct virtio_video_device *vvd,
- void *resp_buf, size_t resp_size,
- enum virtio_video_format format)
-{
- int ret;
- struct virtio_video_query_control *req_p;
- struct virtio_video_query_control_level *ctrl_l;
- struct virtio_video_vbuffer *vbuf;
- uint32_t req_size = 0;
-
- req_size = sizeof(struct virtio_video_query_control) +
- sizeof(struct virtio_video_query_control_level);
-
- req_p = virtio_video_alloc_req_resp(vvd, NULL, &vbuf, req_size,
- resp_size, resp_buf);
- if (IS_ERR(req_p))
- return PTR_ERR(req_p);
-
- 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);
-
- ret = virtio_video_queue_cmd_buffer_sync(vvd, vbuf);
- if (ret == -ETIMEDOUT)
- v4l2_err(&vvd->v4l2_dev,
- "timed out waiting for level query\n");
- return ret;
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int virtio_video_query_control_profile(struct virtio_video_device *vvd,
- void *resp_buf, size_t resp_size,
- enum virtio_video_format format)
-{
- int ret;
- struct virtio_video_query_control *req_p;
- struct virtio_video_query_control_profile *ctrl_p;
- struct virtio_video_vbuffer *vbuf;
- uint32_t req_size = 0;
-
- req_size = sizeof(struct virtio_video_query_control) +
- sizeof(struct virtio_video_query_control_profile);
-
- req_p = virtio_video_alloc_req_resp(vvd, NULL, &vbuf, req_size,
- resp_size, resp_buf);
- if (IS_ERR(req_p))
- return PTR_ERR(req_p);
-
- 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);
-
- ret = virtio_video_queue_cmd_buffer_sync(vvd, vbuf);
- if (ret == -ETIMEDOUT)
- v4l2_err(&vvd->v4l2_dev,
- "timed out waiting for profile query\n");
- return ret;
-}
-
-static void
-virtio_video_cmd_get_params_cb(struct virtio_video_device *vvd,
- 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;
-
- 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;
-
- 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 =
- &params->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);
- }
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int virtio_video_cmd_get_params(struct virtio_video_device *vvd,
- struct virtio_video_stream *stream,
- enum virtio_video_queue_type queue_type)
-{
- int ret;
- struct virtio_video_get_params *req_p;
- struct virtio_video_vbuffer *vbuf;
- struct virtio_video_get_params_resp *resp_p;
- size_t resp_size = sizeof(struct virtio_video_get_params_resp);
-
- req_p = virtio_video_alloc_req_resp(vvd,
- &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;
-
- vbuf->priv = stream;
-
- ret = virtio_video_queue_cmd_buffer_sync(vvd, vbuf);
- if (ret == -ETIMEDOUT)
- v4l2_err(&vvd->v4l2_dev,
- "timed out waiting for get_params\n");
- return ret;
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int
-virtio_video_cmd_set_params(struct virtio_video_device *vvd,
- struct virtio_video_stream *stream,
- struct video_format_info *format_info,
- enum virtio_video_queue_type queue_type)
-{
- int i;
- struct virtio_video_set_params *req_p;
- struct virtio_video_vbuffer *vbuf;
-
- req_p = virtio_video_alloc_req(vvd, &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(vvd, vbuf);
-}
-
-static void
-virtio_video_cmd_get_ctrl_profile_cb(struct virtio_video_device *vvd,
- 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;
-
- resp_p = (void *)((char *)resp +
- sizeof(struct virtio_video_get_control_resp));
-
- control->profile = le32_to_cpu(resp_p->profile);
-}
-
-static void
-virtio_video_cmd_get_ctrl_level_cb(struct virtio_video_device *vvd,
- 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;
- struct virtio_video_stream *stream = vbuf->priv;
- struct video_control_info *control = &stream->control;
-
- resp_p = (void *)((char *)resp +
- sizeof(struct virtio_video_get_control_resp));
-
- control->level = le32_to_cpu(resp_p->level);
-}
-
-static void
-virtio_video_cmd_get_ctrl_bitrate_cb(struct virtio_video_device *vvd,
- 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;
-
- resp_p = (void *)((char *) resp +
- sizeof(struct virtio_video_get_control_resp));
-
- control->bitrate = le32_to_cpu(resp_p->bitrate);
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int virtio_video_cmd_get_control(struct virtio_video_device *vvd,
- struct virtio_video_stream *stream,
- enum virtio_video_control_type control)
-{
- int ret;
- struct virtio_video_get_control *req_p;
- struct virtio_video_get_control_resp *resp_p;
- struct virtio_video_vbuffer *vbuf;
- size_t resp_size = sizeof(struct virtio_video_get_control_resp);
- virtio_video_resp_cb cb;
-
- switch (control) {
- 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 -EINVAL;
- }
-
- req_p = virtio_video_alloc_req_resp(vvd, 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(control);
-
- resp_p = (struct virtio_video_get_control_resp *)vbuf->resp_buf;
-
- vbuf->priv = stream;
-
- ret = virtio_video_queue_cmd_buffer_sync(vvd, vbuf);
- if (ret == -ETIMEDOUT)
- v4l2_err(&vvd->v4l2_dev,
- "timed out waiting for get_control\n");
- return ret;
-}
-
-// TODO: replace virtio_video_cmd_hdr accoring to specification v4
-int virtio_video_cmd_set_control(struct virtio_video_device *vvd,
- uint32_t stream_id,
- enum virtio_video_control_type control,
- uint32_t value)
-{
- struct virtio_video_set_control *req_p;
- struct virtio_video_vbuffer *vbuf;
- struct virtio_video_control_val_level *ctrl_l;
- struct virtio_video_control_val_profile *ctrl_p;
- struct virtio_video_control_val_bitrate *ctrl_b;
- size_t size;
-
- if (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 -EINVAL;
- }
-
- req_p = virtio_video_alloc_req(vvd, &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(vvd, vbuf);
-}
-