From patchwork Tue Mar 21 10:28:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 665598 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7F2AC6FD1D for ; Tue, 21 Mar 2023 10:29:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230184AbjCUK3W (ORCPT ); Tue, 21 Mar 2023 06:29:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230178AbjCUK3T (ORCPT ); Tue, 21 Mar 2023 06:29:19 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 514FB8A5E; Tue, 21 Mar 2023 03:29:10 -0700 (PDT) Received: from benjamin-XPS-13-9310.. (unknown [IPv6:2a01:e0a:120:3210:f5ef:1040:e3c1:3d00]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by madras.collabora.co.uk (Postfix) with ESMTPSA id 314C066030DD; Tue, 21 Mar 2023 10:29:08 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1679394548; bh=wbGG8suku31xPcZWDsbA5SZrBouN3rB+2nVL/+CyKqs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DrHE1wbssG2eS7zZ9pBxpMxNDPYr9M+4841okggsOIUh50L8ZmhbPkHHCcteYB5sV 5xOHPpVjH6D4HFHqCH1T0x2JeRY61MBf6I93fCcIBY9a/YSA8IJxeDVKhhG5RMeH1V jc+5nwzOmpPtQZYSmlO2rCX3X8Ad8lC/EplCSzEMGldn71C3KIxMoKn9bh4sPLVy5U 2j8jTOJMU6PQajXqsnemx8kFmPXn0xdcj8m0FJKhON1h30Wu9zAhty5vnxyi1v8txo eIVRKM3ABoQPJzP64PdUFDXcVsKNSRW25h2f1Q0tqJblKLwWR0GAWT6GSt4I8R1LPw RdS8rfpP0cecw== From: Benjamin Gaignard To: tfiga@chromium.org, m.szyprowski@samsung.com, mchehab@kernel.org, ming.qian@nxp.com, shijie.qin@nxp.com, eagle.zhou@nxp.com, bin.liu@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, tiffany.lin@mediatek.com, andrew-ct.chen@mediatek.com, yunfei.dong@mediatek.com, stanimir.k.varbanov@gmail.com, quic_vgarodia@quicinc.com, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de, daniel.almeida@collabora.com, hverkuil-cisco@xs4all.nl, laurent.pinchart@ideasonboard.com, jernel@kernel.org Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org, kernel@collabora.com, Benjamin Gaignard Subject: [PATCH v2 1/8] media: videobuf2: Access vb2_queue bufs array through helper functions Date: Tue, 21 Mar 2023 11:28:48 +0100 Message-Id: <20230321102855.346732-2-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230321102855.346732-1-benjamin.gaignard@collabora.com> References: <20230321102855.346732-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The first step before changing how vb2 buffers are stored into queue is to avoid direct access to bufs arrays. This patch adds 2 helpers functions to add and remove vb2 buffers from a queue. With these 2 and vb2_get_buffer(), bufs field of struct vb2_queue becomes like a private member of the structure. Signed-off-by: Benjamin Gaignard --- .../media/common/videobuf2/videobuf2-core.c | 84 +++++++++++-------- .../media/common/videobuf2/videobuf2-v4l2.c | 17 ++-- drivers/media/platform/amphion/vpu_dbg.c | 4 +- .../platform/mediatek/jpeg/mtk_jpeg_core.c | 2 +- .../vcodec/vdec/vdec_vp9_req_lat_if.c | 2 +- drivers/media/test-drivers/visl/visl-dec.c | 16 ++-- .../staging/media/atomisp/pci/atomisp_ioctl.c | 2 +- include/media/videobuf2-core.h | 26 ++++++ 8 files changed, 101 insertions(+), 52 deletions(-) diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index cf6727d9c81f..79e90e338846 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -359,7 +359,7 @@ static void __setup_offsets(struct vb2_buffer *vb) unsigned long off = 0; if (vb->index) { - struct vb2_buffer *prev = q->bufs[vb->index - 1]; + struct vb2_buffer *prev = vb2_get_buffer(q, vb->index - 1); struct vb2_plane *p = &prev->planes[prev->num_planes - 1]; off = PAGE_ALIGN(p->m.offset + p->length); @@ -437,7 +437,11 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory, } call_void_bufop(q, init_buffer, vb); - q->bufs[vb->index] = vb; + if (!vb2_queue_add_buffer(q, vb)) { + dprintk(q, 1, "failed adding buffer %d to queue\n", buffer); + kfree(vb); + break; + } /* Allocate video buffer memory for the MMAP type */ if (memory == VB2_MEMORY_MMAP) { @@ -445,7 +449,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory, if (ret) { dprintk(q, 1, "failed allocating memory for buffer %d\n", buffer); - q->bufs[vb->index] = NULL; + vb2_queue_remove_buffer(q, vb); kfree(vb); break; } @@ -460,7 +464,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory, dprintk(q, 1, "buffer %d %p initialization failed\n", buffer, vb); __vb2_buf_mem_free(vb); - q->bufs[vb->index] = NULL; + vb2_queue_remove_buffer(q, vb); kfree(vb); break; } @@ -483,7 +487,7 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers) for (buffer = q->num_buffers - buffers; buffer < q->num_buffers; ++buffer) { - vb = q->bufs[buffer]; + vb = vb2_get_buffer(q, buffer); if (!vb) continue; @@ -511,7 +515,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers) /* Call driver-provided cleanup function for each buffer, if provided */ for (buffer = q->num_buffers - buffers; buffer < q->num_buffers; ++buffer) { - struct vb2_buffer *vb = q->bufs[buffer]; + struct vb2_buffer *vb = vb2_get_buffer(q, buffer); if (vb && vb->planes[0].mem_priv) call_void_vb_qop(vb, buf_cleanup, vb); @@ -551,7 +555,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers) q->cnt_unprepare_streaming = 0; } for (buffer = 0; buffer < q->num_buffers; ++buffer) { - struct vb2_buffer *vb = q->bufs[buffer]; + struct vb2_buffer *vb = vb2_get_buffer(q, buffer); bool unbalanced = vb->cnt_mem_alloc != vb->cnt_mem_put || vb->cnt_mem_prepare != vb->cnt_mem_finish || vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr || @@ -591,8 +595,10 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers) /* Free vb2 buffers */ for (buffer = q->num_buffers - buffers; buffer < q->num_buffers; ++buffer) { - kfree(q->bufs[buffer]); - q->bufs[buffer] = NULL; + struct vb2_buffer *vb = vb2_get_buffer(q, buffer); + + vb2_queue_remove_buffer(q, vb); + kfree(vb); } q->num_buffers -= buffers; @@ -628,7 +634,7 @@ static bool __buffers_in_use(struct vb2_queue *q) { unsigned int buffer; for (buffer = 0; buffer < q->num_buffers; ++buffer) { - if (vb2_buffer_in_use(q, q->bufs[buffer])) + if (vb2_buffer_in_use(q, vb2_get_buffer(q, buffer))) return true; } return false; @@ -636,7 +642,7 @@ static bool __buffers_in_use(struct vb2_queue *q) void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb) { - call_void_bufop(q, fill_user_buffer, q->bufs[index], pb); + call_void_bufop(q, fill_user_buffer, vb2_get_buffer(q, index), pb); } EXPORT_SYMBOL_GPL(vb2_core_querybuf); @@ -1547,7 +1553,7 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb) struct vb2_buffer *vb; int ret; - vb = q->bufs[index]; + vb = vb2_get_buffer(q, index); if (vb->state != VB2_BUF_STATE_DEQUEUED) { dprintk(q, 1, "invalid buffer state %s\n", vb2_state_name(vb->state)); @@ -1618,7 +1624,7 @@ static int vb2_start_streaming(struct vb2_queue *q) * correctly return them to vb2. */ for (i = 0; i < q->num_buffers; ++i) { - vb = q->bufs[i]; + vb = vb2_get_buffer(q, i); if (vb->state == VB2_BUF_STATE_ACTIVE) vb2_buffer_done(vb, VB2_BUF_STATE_QUEUED); } @@ -1646,7 +1652,7 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb, return -EIO; } - vb = q->bufs[index]; + vb = vb2_get_buffer(q, index); if (!req && vb->state != VB2_BUF_STATE_IN_REQUEST && q->requires_requests) { @@ -2022,12 +2028,15 @@ static void __vb2_queue_cancel(struct vb2_queue *q) * to vb2 in stop_streaming(). */ if (WARN_ON(atomic_read(&q->owned_by_drv_count))) { - for (i = 0; i < q->num_buffers; ++i) - if (q->bufs[i]->state == VB2_BUF_STATE_ACTIVE) { + for (i = 0; i < q->num_buffers; ++i) { + struct vb2_buffer *vb = vb2_get_buffer(q, i); + + if (vb->state == VB2_BUF_STATE_ACTIVE) { pr_warn("driver bug: stop_streaming operation is leaving buf %p in active state\n", - q->bufs[i]); - vb2_buffer_done(q->bufs[i], VB2_BUF_STATE_ERROR); + vb); + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); } + } /* Must be zero now */ WARN_ON(atomic_read(&q->owned_by_drv_count)); } @@ -2061,7 +2070,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q) * be changed, so we can't move the buf_finish() to __vb2_dqbuf(). */ for (i = 0; i < q->num_buffers; ++i) { - struct vb2_buffer *vb = q->bufs[i]; + struct vb2_buffer *vb = vb2_get_buffer(q, i); struct media_request *req = vb->req_obj.req; /* @@ -2215,7 +2224,7 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off, * return its buffer and plane numbers. */ for (buffer = 0; buffer < q->num_buffers; ++buffer) { - vb = q->bufs[buffer]; + vb = vb2_get_buffer(q, buffer); for (plane = 0; plane < vb->num_planes; ++plane) { if (vb->planes[plane].m.offset == off) { @@ -2262,7 +2271,7 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type, return -EINVAL; } - vb = q->bufs[index]; + vb = vb2_get_buffer(q, index); if (plane >= vb->num_planes) { dprintk(q, 1, "buffer plane out of range\n"); @@ -2339,7 +2348,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma) if (ret) goto unlock; - vb = q->bufs[buffer]; + vb = vb2_get_buffer(q, buffer); /* * MMAP requires page_aligned buffers. @@ -2396,7 +2405,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q, if (ret) goto unlock; - vb = q->bufs[buffer]; + vb = vb2_get_buffer(q, buffer); vaddr = vb2_plane_vaddr(vb, plane); mutex_unlock(&q->mmap_lock); @@ -2625,6 +2634,7 @@ struct vb2_fileio_data { static int __vb2_init_fileio(struct vb2_queue *q, int read) { struct vb2_fileio_data *fileio; + struct vb2_buffer *vb; int i, ret; unsigned int count = 0; @@ -2679,7 +2689,13 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read) * Check if plane_count is correct * (multiplane buffers are not supported). */ - if (q->bufs[0]->num_planes != 1) { + vb = vb2_get_buffer(q, 0); + if (!vb) { + ret = -EBUSY; + goto err_reqbufs; + } + + if (vb->num_planes != 1) { ret = -EBUSY; goto err_reqbufs; } @@ -2688,12 +2704,14 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read) * Get kernel address of each buffer. */ for (i = 0; i < q->num_buffers; i++) { - fileio->bufs[i].vaddr = vb2_plane_vaddr(q->bufs[i], 0); + vb = vb2_get_buffer(q, i); + + fileio->bufs[i].vaddr = vb2_plane_vaddr(vb, 0); if (fileio->bufs[i].vaddr == NULL) { ret = -EINVAL; goto err_reqbufs; } - fileio->bufs[i].size = vb2_plane_size(q->bufs[i], 0); + fileio->bufs[i].size = vb2_plane_size(vb, 0); } /* @@ -2821,15 +2839,15 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ fileio->cur_index = index; buf = &fileio->bufs[index]; - b = q->bufs[index]; + b = vb2_get_buffer(q, index); /* * Get number of bytes filled by the driver */ buf->pos = 0; buf->queued = 0; - buf->size = read ? vb2_get_plane_payload(q->bufs[index], 0) - : vb2_plane_size(q->bufs[index], 0); + buf->size = read ? vb2_get_plane_payload(b, 0) + : vb2_plane_size(b, 0); /* Compensate for data_offset on read in the multiplanar case. */ if (is_multiplanar && read && b->planes[0].data_offset < buf->size) { @@ -2872,7 +2890,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ * Queue next buffer if required. */ if (buf->pos == buf->size || (!read && fileio->write_immediately)) { - struct vb2_buffer *b = q->bufs[index]; + struct vb2_buffer *b = vb2_get_buffer(q, index); /* * Check if this is the last buffer to read. @@ -2899,7 +2917,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ */ buf->pos = 0; buf->queued = 1; - buf->size = vb2_plane_size(q->bufs[index], 0); + buf->size = vb2_plane_size(vb2_get_buffer(q, index), 0); fileio->q_count += 1; /* * If we are queuing up buffers for the first time, then @@ -2970,7 +2988,7 @@ static int vb2_thread(void *data) * Call vb2_dqbuf to get buffer back. */ if (prequeue) { - vb = q->bufs[index++]; + vb = vb2_get_buffer(q, index++); prequeue--; } else { call_void_qop(q, wait_finish, q); @@ -2979,7 +2997,7 @@ static int vb2_thread(void *data) call_void_qop(q, wait_prepare, q); dprintk(q, 5, "file io: vb2_dqbuf result: %d\n", ret); if (!ret) - vb = q->bufs[index]; + vb = vb2_get_buffer(q, index); } if (ret || threadio->stop) break; diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c index 1f5d235a8441..01b2bb957239 100644 --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c @@ -383,7 +383,7 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md return -EINVAL; } - if (q->bufs[b->index] == NULL) { + if (!vb2_get_buffer(q, b->index)) { /* Should never happen */ dprintk(q, 1, "%s: buffer is NULL\n", opname); return -EINVAL; @@ -394,7 +394,7 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md return -EINVAL; } - vb = q->bufs[b->index]; + vb = vb2_get_buffer(q, b->index); vbuf = to_vb2_v4l2_buffer(vb); ret = __verify_planes_array(vb, b); if (ret) @@ -628,11 +628,14 @@ static const struct vb2_buf_ops v4l2_buf_ops = { struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp) { unsigned int i; + struct vb2_buffer *vb2; - for (i = 0; i < q->num_buffers; i++) - if (q->bufs[i]->copied_timestamp && - q->bufs[i]->timestamp == timestamp) - return vb2_get_buffer(q, i); + for (i = 0; i < q->num_buffers; i++) { + vb2 = vb2_get_buffer(q, i); + if (vb2->copied_timestamp && + vb2->timestamp == timestamp) + return vb2; + } return NULL; } EXPORT_SYMBOL_GPL(vb2_find_buffer); @@ -664,7 +667,7 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b) dprintk(q, 1, "buffer index out of range\n"); return -EINVAL; } - vb = q->bufs[b->index]; + vb = vb2_get_buffer(q, b->index); ret = __verify_planes_array(vb, b); if (!ret) vb2_core_querybuf(q, b->index, b); diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c index 44b830ae01d8..8a423c1f6b55 100644 --- a/drivers/media/platform/amphion/vpu_dbg.c +++ b/drivers/media/platform/amphion/vpu_dbg.c @@ -133,7 +133,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data) vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx); for (i = 0; i < vq->num_buffers; i++) { - struct vb2_buffer *vb = vq->bufs[i]; + struct vb2_buffer *vb = vb2_get_buffer(vq, i); struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); if (vb->state == VB2_BUF_STATE_DEQUEUED) @@ -148,7 +148,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data) vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx); for (i = 0; i < vq->num_buffers; i++) { - struct vb2_buffer *vb = vq->bufs[i]; + struct vb2_buffer *vb = vb2_get_buffer(vq, i); struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); if (vb->state == VB2_BUF_STATE_DEQUEUED) diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c index 969516a940ba..0be07f691d9a 100644 --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c @@ -603,7 +603,7 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) return -EINVAL; } - vb = vq->bufs[buf->index]; + vb = vb2_get_buffer(vq, buf->index); jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb); jpeg_src_buf->bs_size = buf->m.planes[0].bytesused; diff --git a/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_req_lat_if.c index cbb6728b8a40..f5958b6d834a 100644 --- a/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_req_lat_if.c +++ b/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_req_lat_if.c @@ -1701,7 +1701,7 @@ static int vdec_vp9_slice_setup_core_buffer(struct vdec_vp9_slice_instance *inst /* update internal buffer's width/height */ for (i = 0; i < vq->num_buffers; i++) { - if (vb == vq->bufs[i]) { + if (vb == vb2_get_buffer(vq, i)) { instance->dpb[i].width = w; instance->dpb[i].height = h; break; diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c index 318d675e5668..328016b456ba 100644 --- a/drivers/media/test-drivers/visl/visl-dec.c +++ b/drivers/media/test-drivers/visl/visl-dec.c @@ -290,13 +290,14 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run) for (i = 0; i < out_q->num_buffers; i++) { char entry[] = "index: %u, state: %s, request_fd: %d, "; u32 old_len = len; - char *q_status = visl_get_vb2_state(out_q->bufs[i]->state); + struct vb2_buffer *vb2 = vb2_get_buffer(out_q, i); + char *q_status = visl_get_vb2_state(vb2->state); len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len, entry, i, q_status, - to_vb2_v4l2_buffer(out_q->bufs[i])->request_fd); + to_vb2_v4l2_buffer(vb2)->request_fd); - len += visl_fill_bytesused(to_vb2_v4l2_buffer(out_q->bufs[i]), + len += visl_fill_bytesused(to_vb2_v4l2_buffer(vb2), &buf[len], TPG_STR_BUF_SZ - len); @@ -342,13 +343,14 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run) len = 0; for (i = 0; i < cap_q->num_buffers; i++) { u32 old_len = len; - char *q_status = visl_get_vb2_state(cap_q->bufs[i]->state); + struct vb2_buffer *vb2 = vb2_get_buffer(cap_q, i); + char *q_status = visl_get_vb2_state(vb2->state); len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len, "index: %u, status: %s, timestamp: %llu, is_held: %d", - cap_q->bufs[i]->index, q_status, - cap_q->bufs[i]->timestamp, - to_vb2_v4l2_buffer(cap_q->bufs[i])->is_held); + vb2->index, q_status, + vb2->timestamp, + to_vb2_v4l2_buffer(vb2)->is_held); tpg_gen_text(&ctx->tpg, basep, line++ * line_height, 16, &buf[old_len]); frame_dprintk(ctx->dev, run->dst->sequence, "%s", &buf[old_len]); diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c index d1314bdbf7d5..c7778860f3d4 100644 --- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c +++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c @@ -1095,7 +1095,7 @@ static int atomisp_dqbuf_wrapper(struct file *file, void *fh, struct v4l2_buffer if (ret) return ret; - vb = pipe->vb_queue.bufs[buf->index]; + vb = vb2_get_buffer(pipe->vb_queue, buf->index); frame = vb_to_frame(vb); buf->reserved = asd->frame_status[buf->index]; diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 4b6a9d2ea372..5b1e3d801546 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -1244,6 +1244,32 @@ static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q, return NULL; } +/** + * vb2_queue_add_buffer() - add a buffer to a queue + * @q: pointer to &struct vb2_queue with videobuf2 queue. + * @vb: pointer to &struct vb2_buffer to be added to the queue. + */ +static inline bool vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb) +{ + if (vb->index < VB2_MAX_FRAME) { + q->bufs[vb->index] = vb; + return true; + } + + return false; +} + +/** + * vb2_queue_remove_buffer() - remove a buffer from a queue + * @q: pointer to &struct vb2_queue with videobuf2 queue. + * @vb: pointer to &struct vb2_buffer to be removed from the queue. + */ +static inline void vb2_queue_remove_buffer(struct vb2_queue *q, struct vb2_buffer *vb) +{ + if (vb->index < VB2_MAX_FRAME) + q->bufs[vb->index] = NULL; +} + /* * The following functions are not part of the vb2 core API, but are useful * functions for videobuf2-*. From patchwork Tue Mar 21 10:28:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 665595 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CCFE6C6FD1D for ; Tue, 21 Mar 2023 10:29:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230384AbjCUK3w (ORCPT ); Tue, 21 Mar 2023 06:29:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230267AbjCUK3b (ORCPT ); Tue, 21 Mar 2023 06:29:31 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0FB394ED4; Tue, 21 Mar 2023 03:29:19 -0700 (PDT) Received: from benjamin-XPS-13-9310.. (unknown [IPv6:2a01:e0a:120:3210:f5ef:1040:e3c1:3d00]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by madras.collabora.co.uk (Postfix) with ESMTPSA id 2DFCF66030E8; Tue, 21 Mar 2023 10:29:11 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1679394551; bh=B3qzeoO8apYPnWNTxctM6cbV/gzCHOVmFROat4WEnUs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Y1WtVasbe2XnDpczuiShe/xz88lYmzK+yijoKyBqJckHiDQV6xR9LC71rNULsUYgK 8jdeE84qfT6UPMWNB/Zcdn1fUs9sN+Kg2UVj/g37jO1F/c77wvb0edw5rch16eZK3V Z3edRlcLxvRmTRl2oYDWiV+6KUycbKqxNiJZ5d13us+M6EQM+6MjgwreopYE0aYd1B GGeag9VHb/NXqpiLy8fm9hDH+oLhqB7QXxt+AWCLgzB+ej9zrJWlUQmhbEMhlh+GWS ILaPJbar4DGWGM1iPrfBjYG3sFuykHXMeuzL+ULnUJjFVXJ9RroiLbCY5BHUuKW/1e GNYlcwD0SPr6g== From: Benjamin Gaignard To: tfiga@chromium.org, m.szyprowski@samsung.com, mchehab@kernel.org, ming.qian@nxp.com, shijie.qin@nxp.com, eagle.zhou@nxp.com, bin.liu@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, tiffany.lin@mediatek.com, andrew-ct.chen@mediatek.com, yunfei.dong@mediatek.com, stanimir.k.varbanov@gmail.com, quic_vgarodia@quicinc.com, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de, daniel.almeida@collabora.com, hverkuil-cisco@xs4all.nl, laurent.pinchart@ideasonboard.com, jernel@kernel.org Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org, kernel@collabora.com, Benjamin Gaignard Subject: [PATCH v2 5/8] media: v4l2: Add DELETE_BUF ioctl Date: Tue, 21 Mar 2023 11:28:52 +0100 Message-Id: <20230321102855.346732-6-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230321102855.346732-1-benjamin.gaignard@collabora.com> References: <20230321102855.346732-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org VIDIOC_DELETE_BUF ioctl allows to delete a buffer from a queue. Signed-off-by: Benjamin Gaignard --- .../userspace-api/media/v4l/user-func.rst | 1 + .../media/v4l/vidioc-delete-buf.rst | 51 ++++++++++++++++ .../media/common/videobuf2/videobuf2-core.c | 59 ++++++++++++++++++- .../media/common/videobuf2/videobuf2-v4l2.c | 6 ++ drivers/media/v4l2-core/v4l2-dev.c | 1 + drivers/media/v4l2-core/v4l2-ioctl.c | 10 ++++ include/media/v4l2-ioctl.h | 4 ++ include/media/videobuf2-core.h | 9 +++ include/media/videobuf2-v4l2.h | 11 ++++ include/uapi/linux/videodev2.h | 1 + 10 files changed, 152 insertions(+), 1 deletion(-) create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-buf.rst diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst index 228c1521f190..93e0a6a117fc 100644 --- a/Documentation/userspace-api/media/v4l/user-func.rst +++ b/Documentation/userspace-api/media/v4l/user-func.rst @@ -17,6 +17,7 @@ Function Reference vidioc-dbg-g-chip-info vidioc-dbg-g-register vidioc-decoder-cmd + vidioc-delete-buf vidioc-dqevent vidioc-dv-timings-cap vidioc-encoder-cmd diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-buf.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-buf.rst new file mode 100644 index 000000000000..0e7ce58f91bc --- /dev/null +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-buf.rst @@ -0,0 +1,51 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L + +.. _VIDIOC_DELETE_BUF: + +************************ +ioctl VIDIOC_DELETE_BUF +************************ + +Name +==== + +VIDIOC_DELETE_BUF - Delete a buffer from a queue + +Synopsis +======== + +.. c:macro:: VIDIOC_DELETE_BUF + +``int ioctl(int fd, VIDIOC_DELETE_BUF, struct v4l2_buffer *argp)`` + +Arguments +========= + +``fd`` + File descriptor returned by :c:func:`open()`. + +``argp`` + Pointer to struct :c:type:`v4l2_buffer`. + +Description +=========== + +Applications can optionally call the :ref:`VIDIOC_DELETE_BUF` ioctl to +delete a buffer from a queue. + +The struct :c:type:`v4l2_buffer` structure is specified in +:ref:`buffer`. + +Return Value +============ + +On success 0 is returned, on error -1 and the ``errno`` variable is set +appropriately. The generic error codes are described at the +:ref:`Generic Error Codes ` chapter. + +EBUSY + File I/O is in progress. + +EINVAL + The buffer ``index`` doesn't exist in the queue. diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index 3c6ced360770..ec241d726fe6 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -401,6 +401,24 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb) vb->skip_cache_sync_on_finish = 1; } +/* + * __vb2_queue_get_free_index() - find a free index in the queue for vb2 buffer. + * + * Returns an index for vb2 buffer. + */ +static int __vb2_queue_get_free_index(struct vb2_queue *q) +{ + int i; + + spin_lock(&q->bufs_lock); + for (i = 0; i < q->max_num_bufs; i++) + if (!q->bufs[i]) + break; + spin_unlock(&q->bufs_lock); + + return i; +} + /* * __vb2_queue_alloc() - allocate vb2 buffer structures and (for MMAP type) * video buffer memory for all buffers/planes on the queue and initializes the @@ -427,7 +445,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory, vb->state = VB2_BUF_STATE_DEQUEUED; vb->vb2_queue = q; vb->num_planes = num_planes; - vb->index = q->num_buffers + buffer; + vb->index = __vb2_queue_get_free_index(q); vb->type = q->type; vb->memory = memory; init_buffer_cache_hints(q, vb); @@ -1570,6 +1588,45 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb) } EXPORT_SYMBOL_GPL(vb2_core_prepare_buf); +int vb2_core_delete_buf(struct vb2_queue *q, unsigned int index) +{ + struct vb2_buffer *vb; + + vb = vb2_get_buffer(q, index); + if (!vb) { + dprintk(q, 1, "invalid buffer index %d\n", index); + return -EINVAL; + } + + if (vb->state == VB2_BUF_STATE_QUEUED) { + dprintk(q, 1, "can't delete queued buffer index %d\n", index); + return -EINVAL; + } + + if (vb && vb->planes[0].mem_priv) + call_void_vb_qop(vb, buf_cleanup, vb); + + /* Free MMAP buffers or release USERPTR buffers */ + if (q->memory == VB2_MEMORY_MMAP) + __vb2_buf_mem_free(vb); + else if (q->memory == VB2_MEMORY_DMABUF) + __vb2_buf_dmabuf_put(vb); + else + __vb2_buf_userptr_put(vb); + + vb2_queue_remove_buffer(q, vb); + kfree(vb); + + q->num_buffers--; + if (!q->num_buffers) { + q->memory = VB2_MEMORY_UNKNOWN; + INIT_LIST_HEAD(&q->queued_list); + } + + dprintk(q, 2, "buffer %d deleted\n", index); + return 0; +} + /* * vb2_start_streaming() - Attempt to start streaming. * @q: videobuf2 queue diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c index 01b2bb957239..7d0b4ed48a06 100644 --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c @@ -742,6 +742,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev, } EXPORT_SYMBOL_GPL(vb2_prepare_buf); +int vb2_delete_buf(struct vb2_queue *q, struct v4l2_buffer *b) +{ + return vb2_core_delete_buf(q, b->index); +} +EXPORT_SYMBOL_GPL(vb2_delete_buf); + int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create) { unsigned requested_planes = 1; diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 397d553177fa..4f49d2115838 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -719,6 +719,7 @@ static void determine_valid_ioctls(struct video_device *vdev) SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf); SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon); SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff); + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUF, vidioc_delete_buf); } if (is_vid || is_vbi || is_meta) { diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 87f163a89c80..2e0af50cac45 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -2152,6 +2152,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); } +static int v4l_delete_buf(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_buffer *b = arg; + int ret = check_fmt(file, b->type); + + return ret ? ret : ops->vidioc_delete_buf(file, fh, b); +} + static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { @@ -2902,6 +2911,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = { IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)), IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)), + IOCTL_INFO(VIDIOC_DELETE_BUF, v4l_delete_buf, v4l_print_buffer, INFO_FL_QUEUE), }; #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h index edb733f21604..2f232ed884c7 100644 --- a/include/media/v4l2-ioctl.h +++ b/include/media/v4l2-ioctl.h @@ -163,6 +163,8 @@ struct v4l2_fh; * :ref:`VIDIOC_CREATE_BUFS ` ioctl * @vidioc_prepare_buf: pointer to the function that implements * :ref:`VIDIOC_PREPARE_BUF ` ioctl + * @vidioc_delete_buf: pointer to the function that implements + * :ref:`VIDIOC_DELETE_BUF ` ioctl * @vidioc_overlay: pointer to the function that implements * :ref:`VIDIOC_OVERLAY ` ioctl * @vidioc_g_fbuf: pointer to the function that implements @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops { struct v4l2_create_buffers *b); int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b); + int (*vidioc_delete_buf)(struct file *file, void *fh, + struct v4l2_buffer *b); int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i); int (*vidioc_g_fbuf)(struct file *file, void *fh, diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 4aa43c5c7c58..16e95278f6e8 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -847,6 +847,15 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, */ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb); +/** + * vb2_core_delete_buf() - + * @q: pointer to &struct vb2_queue with videobuf2 queue. + * @index: id number of the buffer. + * + * Return: returns zero on success; an error code otherwise. + */ +int vb2_core_delete_buf(struct vb2_queue *q, unsigned int index); + /** * vb2_core_qbuf() - Queue a buffer from userspace * diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h index 88a7a565170e..3beeb4c735f0 100644 --- a/include/media/videobuf2-v4l2.h +++ b/include/media/videobuf2-v4l2.h @@ -114,6 +114,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create); */ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev, struct v4l2_buffer *b); +/** + * vb2_delete_buf() - Delete the buffer from the queue + * + * @q: pointer to &struct vb2_queue with videobuf2 queue. + * @b: buffer structure passed from userspace to + * &v4l2_ioctl_ops->vidioc_delete_buf handler in driver + * + * The return values from this function are intended to be directly returned + * from &v4l2_ioctl_ops->vidioc_delete_buf handler in driver. + */ +int vb2_delete_buf(struct vb2_queue *q, struct v4l2_buffer *b); /** * vb2_qbuf() - Queue a buffer from userspace diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 17a9b975177a..9cee9ccf1da8 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -2681,6 +2681,7 @@ struct v4l2_create_buffers { #define VIDIOC_QUERY_DV_TIMINGS _IOR('V', 99, struct v4l2_dv_timings) #define VIDIOC_DV_TIMINGS_CAP _IOWR('V', 100, struct v4l2_dv_timings_cap) #define VIDIOC_ENUM_FREQ_BANDS _IOWR('V', 101, struct v4l2_frequency_band) +#define VIDIOC_DELETE_BUF _IOWR('V', 102, struct v4l2_buffer) /* * Experimental, meant for debugging, testing and internal use. From patchwork Tue Mar 21 10:28:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Gaignard X-Patchwork-Id: 665596 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9C1DFC761AF for ; Tue, 21 Mar 2023 10:29:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229484AbjCUK3e (ORCPT ); Tue, 21 Mar 2023 06:29:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229738AbjCUK30 (ORCPT ); Tue, 21 Mar 2023 06:29:26 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 176B77D9A; Tue, 21 Mar 2023 03:29:19 -0700 (PDT) Received: from benjamin-XPS-13-9310.. (unknown [IPv6:2a01:e0a:120:3210:f5ef:1040:e3c1:3d00]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by madras.collabora.co.uk (Postfix) with ESMTPSA id E27B666030E9; Tue, 21 Mar 2023 10:29:11 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1679394552; bh=B0Rfbtcd7Lj6Gt4LwrxhZy0EbZHQ5j8h6KrandWni6M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U7ybreOdVzDSiHTzKZh1y3KSBMBFwimkHYkkSq/PYEu0qP70tXr1PdbsOoPEhW08E kmw3KFdN7WwfDalciAutik2Q9MFIgEV1NQjlMXlZHzuhAyAo6gV4ShLd7mWg6yeaup 6UETgFv2/3RzfMQLjjAbvlG+AT8E+hRBLjKjiDlSAielO9/FuAtP2bO5wfcBltixR8 SdNTY2r/6XhkgpE9msAKGD0zYVu2+PTelJ9U7tDefT0uw2xhOl4LDfjWyu596D5HwH cDVPmRoAxZuuWFGu2KO/PMoXC7aGxYj0qBzN1lAKFerJkURxEIzJRYJNQbwVmMt+PW wdP9KV3p8RI0Q== From: Benjamin Gaignard To: tfiga@chromium.org, m.szyprowski@samsung.com, mchehab@kernel.org, ming.qian@nxp.com, shijie.qin@nxp.com, eagle.zhou@nxp.com, bin.liu@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, tiffany.lin@mediatek.com, andrew-ct.chen@mediatek.com, yunfei.dong@mediatek.com, stanimir.k.varbanov@gmail.com, quic_vgarodia@quicinc.com, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de, daniel.almeida@collabora.com, hverkuil-cisco@xs4all.nl, laurent.pinchart@ideasonboard.com, jernel@kernel.org Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org, kernel@collabora.com, Benjamin Gaignard Subject: [PATCH v2 6/8] media: v4l2: Add mem2mem helpers for DELETE_BUF ioctl Date: Tue, 21 Mar 2023 11:28:53 +0100 Message-Id: <20230321102855.346732-7-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230321102855.346732-1-benjamin.gaignard@collabora.com> References: <20230321102855.346732-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Create v4l2-mem2mem helpers for VIDIOC_DELETE_BUF ioctl. Signed-off-by: Benjamin Gaignard --- drivers/media/v4l2-core/v4l2-mem2mem.c | 20 ++++++++++++++++++++ include/media/v4l2-mem2mem.h | 12 ++++++++++++ 2 files changed, 32 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 0cc30397fbad..42f51ca25379 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -831,6 +831,17 @@ int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, } EXPORT_SYMBOL_GPL(v4l2_m2m_prepare_buf); +int v4l2_m2m_delete_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, + struct v4l2_buffer *buf) +{ + struct vb2_queue *vq; + + vq = v4l2_m2m_get_vq(m2m_ctx, buf->type); + + return vb2_delete_buf(vq, buf); +} +EXPORT_SYMBOL_GPL(v4l2_m2m_delete_buf); + int v4l2_m2m_create_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct v4l2_create_buffers *create) { @@ -1377,6 +1388,15 @@ int v4l2_m2m_ioctl_create_bufs(struct file *file, void *priv, } EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_create_bufs); +int v4l2_m2m_ioctl_delete_buf(struct file *file, void *priv, + struct v4l2_buffer *buf) +{ + struct v4l2_fh *fh = file->private_data; + + return v4l2_m2m_delete_buf(file, fh->m2m_ctx, buf); +} +EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_delete_buf); + int v4l2_m2m_ioctl_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf) { diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h index bb9de6a899e0..96f1b1f3b840 100644 --- a/include/media/v4l2-mem2mem.h +++ b/include/media/v4l2-mem2mem.h @@ -381,6 +381,16 @@ int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct v4l2_buffer *buf); +/** + * v4l2_m2m_delete_buf() - delete buffer from the queue + * + * @file: pointer to struct &file + * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx + * @buf: pointer to struct &v4l2_buffer + */ +int v4l2_m2m_delete_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, + struct v4l2_buffer *buf); + /** * v4l2_m2m_create_bufs() - create a source or destination buffer, depending * on the type @@ -846,6 +856,8 @@ int v4l2_m2m_ioctl_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *rb); int v4l2_m2m_ioctl_create_bufs(struct file *file, void *fh, struct v4l2_create_buffers *create); +int v4l2_m2m_ioctl_delete_buf(struct file *file, void *priv, + struct v4l2_buffer *buf); int v4l2_m2m_ioctl_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf); int v4l2_m2m_ioctl_expbuf(struct file *file, void *fh,