From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f45.google.com (mail-pj1-f45.google.com [209.85.216.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C14C81F1313 for ; Mon, 5 Jan 2026 21:21:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.45 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767648122; cv=none; b=Bjozb7RAyudpSVQeLgwClIu8iMMiAXvoLlkLvUFry518np1ZkDts/buizUdT6WUfJhvkWAgBoy3WHgxScnzlN22tq0OJvs+h3rR4If1IytGhGnaBmhhLPaPVmCqMeJ/RVwazxggc0my18VXyt+SF81300+Dr0U72ZVZV+7pkuQo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767648122; c=relaxed/simple; bh=cowYHX6VgY2sQJ6GJvqY/VZEh7SHHG93Pk4pC4H2qkg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=rq4bQ21L9WIIbzEvl2ILTJbsF16d84ms2sTWZ32wv6sjdTISDjOHxsXOTIsWClwwac6Ek/SDvDQVefMOO/4l7sWnNTwYOmAZFgVSyVaSHjldlkVmaSwIVx5J9FnbXlTaUU/4+fJR2Z5C40q5w+aRqXkEVEtAwmfH10YQ7ZjzEP4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=BLhzuwPj; arc=none smtp.client-ip=209.85.216.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="BLhzuwPj" Received: by mail-pj1-f45.google.com with SMTP id 98e67ed59e1d1-34be2be4b7cso315846a91.3 for ; Mon, 05 Jan 2026 13:21:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1767648119; x=1768252919; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=IHl6KsCXWNnvBFhjw1BS903IWG5F64nsaXFE4JrVbjI=; b=BLhzuwPjDPqQrUSfJ6p4jdemTGBJxIVwxOJwMditOiGQ3V1s6qV7UFEjhiCeayhVh2 jQp7FBvyOeAnKvJmLjTscKT1cGV0jxT3htcCq77AExuNw3/ti1aHZYI80BDUjT7flZla e5wo+j+QP7LvIk5cAZZPzvqAGbWhn+OjoJcyaGMvcBpkIuSojhS2B2ycE/smkLJZyBau GoTVyFpcfN3FA8AY3nOv2pC1oF2y32gb3NYgRIoId4FJhhnc3x1R3CgrVjQtV6dH0bnV pcvla1bSyKjw7f2rR2G8rcSXc5gxq+a0C/lfQxcdk0qx/NAyYdm0u84kp7IltgCjXnNw zhRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767648119; x=1768252919; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=IHl6KsCXWNnvBFhjw1BS903IWG5F64nsaXFE4JrVbjI=; b=u75g2Pv5ba3TgTcLUJ7nhikH++JYFEhvTNxmKGpMLPG3ANFIg+loeX0kAE+Bp2DWqd HNA8WvJZVWtY+MUR4E+N5L+JdVkh46HGt7XoBAqPKyuXbe89M+xUAqix7m9yji28W7Ge kO4YQgKvYzwiOR1+dkMVlg86h41mM9xInOpTh8ClT1Z4GVPAysXc7MsswSmXrPFGLxoh 0zpQkJzKh9BTzs9/HBmUutgI6XNxq3rPEUcMuuChQvDJ5FAV88f+9/+ZxR5QgZ2I8CH2 Yfhmxq+VUl5vC+uEjiRLQtu5TmyJEp/xzNdN211kGDOecn6i42K/vK2fRezICaM7j32F zNXQ== X-Forwarded-Encrypted: i=1; AJvYcCUc9lKhfpV6lMiBbmt83HXnnBsqqG+DVi/CnNmOMJSoDNejCzoPomraJ9Uprre+0mMDExPdGUCynTgPSBE=@vger.kernel.org X-Gm-Message-State: AOJu0YwuaPL3vdvu0+ZSmRzbS8c7JseJRHd1DDDlxNn6jMSJ1FFjsQFj OZEoHWUrHoWoDMsJqHo42Lqo/Dlew7EJWfaQtXrorbUHcOZ7xSiamfZr0hbWDKv5rANiVex5Hie WmRxq2jc= X-Gm-Gg: AY/fxX5przxjbc0L8nSA05u76B1KQr8hC6DQE2gzYZD5bt6BmY5AXU9S6r7hZhipizj kNKG456cnRwgayzQAGnZYBdFwHpZYTEaNW7Az1TRtDr+AzuY0S3UjI4Tn5Ky6KliBqrKDDJZcSm aWyW50SnMoFxnq7c4fJKrL4qxDM45zuVlnLq4yrbyOCr+Z2AHqUWy2LA/EEmQm/3mn3+0RLRvnb LNPOFI4L1458yZ7jPkRmSxxG/R2yhLIqIFGeFslGtgJGOMaQIhZ7byzINjrw+R7iz21v+a11b3Z 5l0b/E3Kc1i96vjI4ayWvnIx7rlVg+NI9nggMTpO7G1lQked+w5a+nUppjelVDUZp7qBbl4wDPl db9DlwE5eTjcWU+uExg/Om2nrAKNm91rsIQQl8prkIdPaSkiQcEk4QxWoI38IStDyLtOCE2iqz2 4vOmv9FiTfoQbYSw== X-Google-Smtp-Source: AGHT+IGd4sVKQ0O01R6fgipDmJAPqJh6j4MuVL4yYoNRQBHoibLH/wAamHcAaAdd1V93u2HchD6BLw== X-Received: by 2002:a17:90b:3e83:b0:341:315:f4ed with SMTP id 98e67ed59e1d1-34f5f280f61mr438841a91.10.1767648119023; Mon, 05 Jan 2026 13:21:59 -0800 (PST) Received: from p14s ([2604:3d09:148c:c800:3f6b:5551:220f:8f13]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-34f5fb7442asm272953a91.15.2026.01.05.13.21.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Jan 2026 13:21:58 -0800 (PST) Date: Mon, 5 Jan 2026 14:21:56 -0700 From: Mathieu Poirier To: Tanmay Shah Cc: jassisinghbrar@gmail.com, andersson@kernel.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org Subject: Re: [PATCH v3 2/2] remoteproc: xlnx: do not kick if mbox queue is full Message-ID: References: <20251217212728.1540043-1-tanmay.shah@amd.com> <20251217212728.1540043-3-tanmay.shah@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251217212728.1540043-3-tanmay.shah@amd.com> Good day, On Wed, Dec 17, 2025 at 01:27:28PM -0800, Tanmay Shah wrote: > If MBOX_TX_QUEUE_LEN number of kicks are pending, then no need to keep > doing more kicks because it will fail anyway. Preventing further kicks > is needed because it avoids printing false positive warning messages > from mailbox framework. Functionally nothing changes from RPMsg or > remoteproc point of view. > > Also, allocate different mbox client data structure for tx channel, as > it's a requirement from the mailbox framework. > The semantic of these two changes is different enough to mandate two separate patches. I'm fine with the changes themselves. Thanks, Mathieu > Signed-off-by: Tanmay Shah > --- > drivers/remoteproc/xlnx_r5_remoteproc.c | 24 +++++++++++++++++++----- > 1 file changed, 19 insertions(+), 5 deletions(-) > > diff --git a/drivers/remoteproc/xlnx_r5_remoteproc.c b/drivers/remoteproc/xlnx_r5_remoteproc.c > index a7b75235f53e..2db158c189be 100644 > --- a/drivers/remoteproc/xlnx_r5_remoteproc.c > +++ b/drivers/remoteproc/xlnx_r5_remoteproc.c > @@ -9,6 +9,7 @@ > #include > #include > #include > +#include > #include > #include > #include > @@ -74,7 +75,8 @@ struct zynqmp_sram_bank { > * @tx_mc_buf: to copy data to mailbox tx channel > * @r5_core: this mailbox's corresponding r5_core pointer > * @mbox_work: schedule work after receiving data from mailbox > - * @mbox_cl: mailbox client > + * @mbox_tx_cl: tx channel mailbox client > + * @mbox_rx_cl: rx channel mailbox client > * @tx_chan: mailbox tx channel > * @rx_chan: mailbox rx channel > */ > @@ -83,7 +85,8 @@ struct mbox_info { > unsigned char tx_mc_buf[MBOX_CLIENT_BUF_MAX]; > struct zynqmp_r5_core *r5_core; > struct work_struct mbox_work; > - struct mbox_client mbox_cl; > + struct mbox_client mbox_tx_cl; > + struct mbox_client mbox_rx_cl; > struct mbox_chan *tx_chan; > struct mbox_chan *rx_chan; > }; > @@ -230,7 +233,7 @@ static void zynqmp_r5_mb_rx_cb(struct mbox_client *cl, void *msg) > struct mbox_info *ipi; > size_t len; > > - ipi = container_of(cl, struct mbox_info, mbox_cl); > + ipi = container_of(cl, struct mbox_info, mbox_rx_cl); > > /* copy data from ipi buffer to r5_core */ > ipi_msg = (struct zynqmp_ipi_message *)msg; > @@ -269,8 +272,8 @@ static struct mbox_info *zynqmp_r5_setup_mbox(struct device *cdev) > if (!ipi) > return NULL; > > - mbox_cl = &ipi->mbox_cl; > - mbox_cl->rx_callback = zynqmp_r5_mb_rx_cb; > + mbox_cl = &ipi->mbox_tx_cl; > + mbox_cl->rx_callback = NULL; > mbox_cl->tx_block = false; > mbox_cl->knows_txdone = false; > mbox_cl->tx_done = NULL; > @@ -285,6 +288,13 @@ static struct mbox_info *zynqmp_r5_setup_mbox(struct device *cdev) > return NULL; > } > > + mbox_cl = &ipi->mbox_rx_cl; > + mbox_cl->rx_callback = zynqmp_r5_mb_rx_cb; > + mbox_cl->tx_block = false; > + mbox_cl->knows_txdone = false; > + mbox_cl->tx_done = NULL; > + mbox_cl->dev = cdev; > + > ipi->rx_chan = mbox_request_channel_byname(mbox_cl, "rx"); > if (IS_ERR(ipi->rx_chan)) { > mbox_free_channel(ipi->tx_chan); > @@ -335,6 +345,10 @@ static void zynqmp_r5_rproc_kick(struct rproc *rproc, int vqid) > if (!ipi) > return; > > + /* Do not need new kick as already many kicks are pending. */ > + if (ipi->tx_chan->cl->msg_slot_ro == 0) > + return; > + > mb_msg = (struct zynqmp_ipi_message *)ipi->tx_mc_buf; > memcpy(mb_msg->data, &vqid, sizeof(vqid)); > mb_msg->len = sizeof(vqid); > -- > 2.34.1 >