From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1033024AbeCAQYX (ORCPT ); Thu, 1 Mar 2018 11:24:23 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:24347 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1032976AbeCAQYR (ORCPT ); Thu, 1 Mar 2018 11:24:17 -0500 From: Loic Pallardy To: , CC: , , , , Loic Pallardy Subject: [PATCH v3 07/13] remoteproc: introduce rproc_find_carveout_by_name function Date: Thu, 1 Mar 2018 17:23:54 +0100 Message-ID: <1519921440-21356-8-git-send-email-loic.pallardy@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1519921440-21356-1-git-send-email-loic.pallardy@st.com> References: <1519921440-21356-1-git-send-email-loic.pallardy@st.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.75.127.44] X-ClientProxiedBy: SFHDAG4NODE2.st.com (10.75.127.11) To SFHDAG7NODE2.st.com (10.75.127.20) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2018-03-01_08:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 | 43 ++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 91aa22b..7a500cb 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -216,6 +216,49 @@ 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. + * + * The function returns 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; + + va_start(args, name); + snprintf(_name, sizeof(_name), name, args); + va_end(args); + + if (!name) + return NULL; + + 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; -- 1.9.1