From patchwork Mon Mar 2 04:12:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Senozhatsky X-Patchwork-Id: 11414745 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A02B4930 for ; Mon, 2 Mar 2020 04:12:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6BA43246B9 for ; Mon, 2 Mar 2020 04:12:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="FmgJNDpI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727092AbgCBEMq (ORCPT ); Sun, 1 Mar 2020 23:12:46 -0500 Received: from mail-pg1-f170.google.com ([209.85.215.170]:38155 "EHLO mail-pg1-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726973AbgCBEMq (ORCPT ); Sun, 1 Mar 2020 23:12:46 -0500 Received: by mail-pg1-f170.google.com with SMTP id d6so4749319pgn.5 for ; Sun, 01 Mar 2020 20:12:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=OPhC0uGdWtK6uqXkI9lBErx3+QeFq4eF7/uoPZxJkTQ=; b=FmgJNDpIAoxVhImLQMSu3dC3dzeJZR5gAA5tBj3L9KybU4mZrYWDKCykSFHzhiNwHn 8XlBR3Boa1wfENsAnxDtR34d44O/W+GUyZ2emMgXw/GJBharvYXLqaPwF/qcDC1VW55v Ro4oJYLrlQvgA7V4wWCIgNRhgTlS38xk3z/Hg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=OPhC0uGdWtK6uqXkI9lBErx3+QeFq4eF7/uoPZxJkTQ=; b=hg1FTH8QBrGpcFtgaSfOWkbN2IOb3U46AbbIUUbPgTJrRbs3TTQqKVgXJZP9i5wLyy RxmzkGX0LoEvdqZtGq7Q2WLtl8R3iUADpBZ2MnwW6MkcwU56lsfQiaUX4MLHYzg2nN0l yFG0sw+NAknNw56XgHwNttJD2yvJysF07sTudPCVw0S7+f8E9dn3bW2CenXK+/bbv4jH 1ivFFZ+vTppeB9Wks41O4p5jmMJPyqT/tEvoF6XAeUL4b7RiCHE22nMQVCNsovm8Psua SKh7agCuFwQEeFO+K0FFReWcaB4ZQg+/UjvTxHU896/VMnqCiQeil/8ldzyfI7Pmzmxp t7Qw== X-Gm-Message-State: APjAAAUCGcNNTouI0qIP8rEyl+/+ucqp/YxXkTxcin2QIInnDQhAfTdw X8GO3TzzBwDlzrn5hOTUwFG9+g== X-Google-Smtp-Source: APXvYqxurk5Uwet4tGl1PKrI5IWghbR2AtLBTDvWBo0KtgvRhJ7BvNHxii3NEjh4cWxHxNr4+H+U6Q== X-Received: by 2002:a63:3d44:: with SMTP id k65mr18176896pga.349.1583122365094; Sun, 01 Mar 2020 20:12:45 -0800 (PST) Received: from tigerii.tok.corp.google.com ([2401:fa00:8f:203:5bbb:c872:f2b1:f53b]) by smtp.gmail.com with ESMTPSA id d82sm1698114pfd.187.2020.03.01.20.12.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 01 Mar 2020 20:12:44 -0800 (PST) From: Sergey Senozhatsky To: Hans Verkuil , Tomasz Figa Cc: Mauro Carvalho Chehab , Kyungmin Park , Marek Szyprowski , Sakari Ailus , Laurent Pinchart , Pawel Osciak , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Sergey Senozhatsky Subject: [PATCHv4 04/11] videobuf2: add queue memory consistency parameter Date: Mon, 2 Mar 2020 13:12:06 +0900 Message-Id: <20200302041213.27662-5-senozhatsky@chromium.org> X-Mailer: git-send-email 2.25.0.265.gbab2e86ba0-goog In-Reply-To: <20200302041213.27662-1-senozhatsky@chromium.org> References: <20200302041213.27662-1-senozhatsky@chromium.org> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Preparations for future V4L2_FLAG_MEMORY_NON_CONSISTENT support. Extend vb2_core_reqbufs() with queue memory consistency flag that is applied to the newly allocated buffers. An attempt to allocate a buffer with consistency requirements which don't match queue's consistency model will fail. Signed-off-by: Sergey Senozhatsky --- .../media/common/videobuf2/videobuf2-core.c | 47 +++++++++++++++---- .../media/common/videobuf2/videobuf2-v4l2.c | 6 +-- drivers/media/dvb-core/dvb_vb2.c | 2 +- include/media/videobuf2-core.h | 7 ++- 4 files changed, 47 insertions(+), 15 deletions(-) diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index 4489744fbbd9..3ca0545db7ee 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -664,8 +664,19 @@ int vb2_verify_memory_type(struct vb2_queue *q, } EXPORT_SYMBOL(vb2_verify_memory_type); +static void set_queue_consistency(struct vb2_queue *q, bool consistent_mem) +{ + if (!vb2_queue_allows_cache_hints(q)) + return; + + if (consistent_mem) + q->dma_attrs &= ~DMA_ATTR_NON_CONSISTENT; + else + q->dma_attrs |= DMA_ATTR_NON_CONSISTENT; +} + int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, - unsigned int *count) + bool consistent_mem, unsigned int *count) { unsigned int num_buffers, allocated_buffers, num_planes = 0; unsigned plane_sizes[VB2_MAX_PLANES] = { }; @@ -720,6 +731,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, num_buffers = min_t(unsigned int, num_buffers, VB2_MAX_FRAME); memset(q->alloc_devs, 0, sizeof(q->alloc_devs)); q->memory = memory; + set_queue_consistency(q, consistent_mem); /* * Ask the driver how many buffers and planes per buffer it requires. @@ -803,9 +815,21 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, } EXPORT_SYMBOL_GPL(vb2_core_reqbufs); +static bool verify_consistency_attr(struct vb2_queue *q, bool consistent_mem) +{ + bool queue_attr = q->dma_attrs & DMA_ATTR_NON_CONSISTENT; + + if (consistent_mem != queue_attr) { + dprintk(1, "memory consistency model mismatch\n"); + return false; + } + return true; +} + int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, - unsigned int *count, unsigned requested_planes, - const unsigned requested_sizes[]) + bool consistent_mem, unsigned int *count, + unsigned requested_planes, + const unsigned requested_sizes[]) { unsigned int num_planes = 0, num_buffers, allocated_buffers; unsigned plane_sizes[VB2_MAX_PLANES] = { }; @@ -823,10 +847,15 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, } memset(q->alloc_devs, 0, sizeof(q->alloc_devs)); q->memory = memory; + set_queue_consistency(q, consistent_mem); q->waiting_for_buffers = !q->is_output; - } else if (q->memory != memory) { - dprintk(1, "memory model mismatch\n"); - return -EINVAL; + } else { + if (q->memory != memory) { + dprintk(1, "memory model mismatch\n"); + return -EINVAL; + } + if (!verify_consistency_attr(q, consistent_mem)) + return -EINVAL; } num_buffers = min(*count, VB2_MAX_FRAME - q->num_buffers); @@ -2498,7 +2527,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read) fileio->memory = VB2_MEMORY_MMAP; fileio->type = q->type; q->fileio = fileio; - ret = vb2_core_reqbufs(q, fileio->memory, &fileio->count); + ret = vb2_core_reqbufs(q, fileio->memory, true, &fileio->count); if (ret) goto err_kfree; @@ -2555,7 +2584,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read) err_reqbufs: fileio->count = 0; - vb2_core_reqbufs(q, fileio->memory, &fileio->count); + vb2_core_reqbufs(q, fileio->memory, true, &fileio->count); err_kfree: q->fileio = NULL; @@ -2575,7 +2604,7 @@ static int __vb2_cleanup_fileio(struct vb2_queue *q) vb2_core_streamoff(q, q->type); q->fileio = NULL; fileio->count = 0; - vb2_core_reqbufs(q, fileio->memory, &fileio->count); + vb2_core_reqbufs(q, fileio->memory, true, &fileio->count); kfree(fileio); dprintk(3, "file io emulator closed\n"); } diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c index c847bcea6e95..6111d74f68c9 100644 --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c @@ -724,7 +724,7 @@ int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req) int ret = vb2_verify_memory_type(q, req->memory, req->type); fill_buf_caps(q, &req->capabilities); - return ret ? ret : vb2_core_reqbufs(q, req->memory, &req->count); + return ret ? ret : vb2_core_reqbufs(q, req->memory, true, &req->count); } EXPORT_SYMBOL_GPL(vb2_reqbufs); @@ -798,7 +798,7 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create) for (i = 0; i < requested_planes; i++) if (requested_sizes[i] == 0) return -EINVAL; - return ret ? ret : vb2_core_create_bufs(q, create->memory, + return ret ? ret : vb2_core_create_bufs(q, create->memory, true, &create->count, requested_planes, requested_sizes); } EXPORT_SYMBOL_GPL(vb2_create_bufs); @@ -974,7 +974,7 @@ int vb2_ioctl_reqbufs(struct file *file, void *priv, return res; if (vb2_queue_is_busy(vdev, file)) return -EBUSY; - res = vb2_core_reqbufs(vdev->queue, p->memory, &p->count); + res = vb2_core_reqbufs(vdev->queue, p->memory, true, &p->count); /* If count == 0, then the owner has released all buffers and he is no longer owner of the queue. Otherwise we have a new owner. */ if (res == 0) diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c index 6974f1731529..e60063652164 100644 --- a/drivers/media/dvb-core/dvb_vb2.c +++ b/drivers/media/dvb-core/dvb_vb2.c @@ -342,7 +342,7 @@ int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req) ctx->buf_siz = req->size; ctx->buf_cnt = req->count; - ret = vb2_core_reqbufs(&ctx->vb_q, VB2_MEMORY_MMAP, &req->count); + ret = vb2_core_reqbufs(&ctx->vb_q, VB2_MEMORY_MMAP, true, &req->count); if (ret) { ctx->state = DVB_VB2_STATE_NONE; dprintk(1, "[%s] count=%d size=%d errno=%d\n", ctx->name, diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 731fd9fbd506..ba83ac754c21 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -737,6 +737,7 @@ void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb); * vb2_core_reqbufs() - Initiate streaming. * @q: pointer to &struct vb2_queue with videobuf2 queue. * @memory: memory type, as defined by &enum vb2_memory. + * @consistent_mem: memory consistency model. * @count: requested buffer count. * * Videobuf2 core helper to implement VIDIOC_REQBUF() operation. It is called @@ -761,12 +762,13 @@ void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb); * Return: returns zero on success; an error code otherwise. */ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, - unsigned int *count); + bool consistent_mem, unsigned int *count); /** * vb2_core_create_bufs() - Allocate buffers and any required auxiliary structs * @q: pointer to &struct vb2_queue with videobuf2 queue. * @memory: memory type, as defined by &enum vb2_memory. + * @consistent_mem: memory consistency model. * @count: requested buffer count. * @requested_planes: number of planes requested. * @requested_sizes: array with the size of the planes. @@ -784,7 +786,8 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, * Return: returns zero on success; an error code otherwise. */ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, - unsigned int *count, unsigned int requested_planes, + bool consistent_mem, unsigned int *count, + unsigned int requested_planes, const unsigned int requested_sizes[]); /**