From patchwork Wed Feb 15 20:18:48 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Loic Pallardy X-Patchwork-Id: 94036 Delivered-To: patch@linaro.org Received: by 10.140.20.99 with SMTP id 90csp2196729qgi; Wed, 15 Feb 2017 12:21:52 -0800 (PST) X-Received: by 10.84.217.153 with SMTP id p25mr43117601pli.164.1487190112418; Wed, 15 Feb 2017 12:21:52 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id y70si4723290plh.168.2017.02.15.12.21.52; Wed, 15 Feb 2017 12:21:52 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752061AbdBOUUD (ORCPT + 25 others); Wed, 15 Feb 2017 15:20:03 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:51050 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751828AbdBOUTL (ORCPT ); Wed, 15 Feb 2017 15:19:11 -0500 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by m0046037.ppops.net (8.16.0.11/8.16.0.11) with SMTP id v1FK9Llk022955; Wed, 15 Feb 2017 21:19:08 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-.pphosted.com with ESMTP id 28hs8wrg61-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 15 Feb 2017 21:19:08 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 001BC34; Wed, 15 Feb 2017 20:19:07 +0000 (GMT) Received: from Webmail-eu.st.com (safex1hubcas2.st.com [10.75.90.16]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id BD49F45E8; Wed, 15 Feb 2017 20:19:07 +0000 (GMT) Received: from localhost (10.129.5.225) by webmail-eu.st.com (10.75.90.13) with Microsoft SMTP Server (TLS) id 8.3.444.0; Wed, 15 Feb 2017 21:19:07 +0100 From: Loic Pallardy To: , , CC: , , , , , , Subject: [PATCH v4 1/2] remoteproc: st: add da to va support Date: Wed, 15 Feb 2017 21:18:48 +0100 Message-ID: <1487189929-24196-2-git-send-email-loic.pallardy@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1487189929-24196-1-git-send-email-loic.pallardy@st.com> References: <1487189929-24196-1-git-send-email-loic.pallardy@st.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-02-15_10:, , signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ST remoteproc driver needs to provide information about carveout memory region to allow remoteproc core to load firmware and access trace buffer. Signed-off-by: Loic Pallardy Acked-by: Hugues Fruchet Tested-by: Hugues Fruchet --- Changes since V2: - fix checkpatch --strict warning Changes since V3: - Rebase on rproc-next branch --- drivers/remoteproc/st_remoteproc.c | 43 ++++++++++++++++++++++++++++++++------ 1 file changed, 37 insertions(+), 6 deletions(-) -- 1.9.1 diff --git a/drivers/remoteproc/st_remoteproc.c b/drivers/remoteproc/st_remoteproc.c index d534bf2..5a2cf59 100644 --- a/drivers/remoteproc/st_remoteproc.c +++ b/drivers/remoteproc/st_remoteproc.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -53,6 +54,10 @@ struct st_rproc { struct mbox_chan *mbox_chan[ST_RPROC_MAX_VRING * MBOX_MAX]; struct mbox_client mbox_client_vq0; struct mbox_client mbox_client_vq1; + phys_addr_t mem_phys; + phys_addr_t mem_reloc; + void *mem_region; + size_t mem_size; }; static void st_rproc_mbox_callback(struct device *dev, u32 msg) @@ -157,10 +162,23 @@ static int st_rproc_stop(struct rproc *rproc) return sw_err ?: pwr_err; } +static void *st_proc_da_to_va(struct rproc *rproc, u64 da, int len) +{ + struct st_rproc *ddata = rproc->priv; + int offset; + + offset = da - ddata->mem_reloc; + if (offset < 0 || offset + len > ddata->mem_size) + return NULL; + + return ddata->mem_region + offset; +} + static const struct rproc_ops st_rproc_ops = { .kick = st_rproc_kick, .start = st_rproc_start, .stop = st_rproc_stop, + .da_to_va = st_proc_da_to_va, }; /* @@ -208,7 +226,8 @@ static int st_rproc_parse_dt(struct platform_device *pdev) struct device *dev = &pdev->dev; struct rproc *rproc = platform_get_drvdata(pdev); struct st_rproc *ddata = rproc->priv; - struct device_node *np = dev->of_node; + struct device_node *np = dev->of_node, *node; + struct resource res; int err; if (ddata->config->sw_reset) { @@ -252,10 +271,24 @@ static int st_rproc_parse_dt(struct platform_device *pdev) return -EINVAL; } - err = of_reserved_mem_device_init(dev); - if (err) { - dev_err(dev, "Failed to obtain shared memory\n"); + node = of_parse_phandle(np, "memory-region", 0); + if (!node) { + dev_err(dev, "No memory-region specified\n"); + return -EINVAL; + } + + err = of_address_to_resource(node, 0, &res); + if (err) return err; + + ddata->mem_phys = res.start; + ddata->mem_reloc = res.start; + ddata->mem_size = resource_size(&res); + ddata->mem_region = devm_ioremap_wc(dev, ddata->mem_phys, ddata->mem_size); + if (!ddata->mem_region) { + dev_err(dev, "Unable to map memory region: %pa+%zx\n", + &res.start, ddata->mem_size); + return -EBUSY; } err = clk_prepare(ddata->clk); @@ -385,8 +418,6 @@ static int st_rproc_remove(struct platform_device *pdev) clk_disable_unprepare(ddata->clk); - of_reserved_mem_device_release(&pdev->dev); - for (i = 0; i < ST_RPROC_MAX_VRING * MBOX_MAX; i++) mbox_free_channel(ddata->mbox_chan[i]);