From patchwork Fri Jul 27 13:14:42 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Loic PALLARDY X-Patchwork-Id: 10547147 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5577C1751 for ; Fri, 27 Jul 2018 13:15:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 40B762BA41 for ; Fri, 27 Jul 2018 13:15:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 351662BA7D; Fri, 27 Jul 2018 13:15:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B972C2BA61 for ; Fri, 27 Jul 2018 13:15:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388584AbeG0OhY (ORCPT ); Fri, 27 Jul 2018 10:37:24 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:39855 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2388468AbeG0OhY (ORCPT ); Fri, 27 Jul 2018 10:37:24 -0400 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx08-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id w6RDE1rD014441; Fri, 27 Jul 2018 15:15:25 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2kg1tj8ptj-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 27 Jul 2018 15:15:25 +0200 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 092C531; Fri, 27 Jul 2018 13:15:25 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag7node2.st.com [10.75.127.20]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id E4AA0577A; Fri, 27 Jul 2018 13:15:24 +0000 (GMT) Received: from localhost (10.75.127.50) by SFHDAG7NODE2.st.com (10.75.127.20) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 27 Jul 2018 15:15:24 +0200 From: Loic Pallardy To: , CC: , , , , , Loic Pallardy Subject: [PATCH v4 07/17] remoteproc: introduce rproc_find_carveout_by_name function Date: Fri, 27 Jul 2018 15:14:42 +0200 Message-ID: <1532697292-14272-8-git-send-email-loic.pallardy@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1532697292-14272-1-git-send-email-loic.pallardy@st.com> References: <1532697292-14272-1-git-send-email-loic.pallardy@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.50] X-ClientProxiedBy: SFHDAG7NODE2.st.com (10.75.127.20) To SFHDAG7NODE2.st.com (10.75.127.20) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-07-27_06:,, signatures=0 Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch provides a new function to find a carveout according to a name. If match found, this function returns a pointer on the corresponding carveout (rproc_mem_entry structure). Signed-off-by: Loic Pallardy --- drivers/remoteproc/remoteproc_core.c | 42 ++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index fe6c4e4..77b39ba 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -217,6 +217,48 @@ void *rproc_da_to_va(struct rproc *rproc, u64 da, int len) } EXPORT_SYMBOL(rproc_da_to_va); +/** + * rproc_find_carveout_by_name() - lookup the carveout region by a name + * @rproc: handle of a remote processor + * @name,..: carveout name to find (standard printf format) + * + * Platform driver has the capability to register some pre-allacoted carveout + * (physically contiguous memory regions) before rproc firmware loading and + * associated resource table analysis. These regions may be dedicated memory + * regions internal to the coprocessor or specified DDR region with specific + * attributes + * + * This function is a helper function with which we can go over the + * allocated carveouts and return associated region characteristics like + * coprocessor address, length or processor virtual address. + * + * Return: a valid pointer on carveout entry on success or NULL on failure. + */ +struct rproc_mem_entry * +rproc_find_carveout_by_name(struct rproc *rproc, const char *name, ...) +{ + va_list args; + char _name[32]; + struct rproc_mem_entry *carveout, *mem = NULL; + + if (!name) + return NULL; + + va_start(args, name); + vsnprintf(_name, sizeof(_name), name, args); + va_end(args); + + list_for_each_entry(carveout, &rproc->carveouts, node) { + /* Compare carveout and requested names */ + if (!strcmp(carveout->name, _name)) { + mem = carveout; + break; + } + } + + return mem; +} + int rproc_alloc_vring(struct rproc_vdev *rvdev, int i) { struct rproc *rproc = rvdev->rproc;