From patchwork Tue Jul 18 12:04:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manikanta Mylavarapu X-Patchwork-Id: 13317089 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3A081EB64DC for ; Tue, 18 Jul 2023 12:06:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232073AbjGRMGw (ORCPT ); Tue, 18 Jul 2023 08:06:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37278 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232327AbjGRMGr (ORCPT ); Tue, 18 Jul 2023 08:06:47 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6BCC1E75; Tue, 18 Jul 2023 05:06:23 -0700 (PDT) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 36I8bPae008258; Tue, 18 Jul 2023 12:06:19 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=89PMC3uMaAzZYyOh9GbfqpkOLPRQTXDVrosnns8+W8M=; b=UnTA7F0MHM19qONLo1IeS7c0QuoC4UA+lzj3BgP8QQV1eKfyiJktNbowYO/kLK6INbdg jWSkflKSRP/UH5cEz8RJ/f8jOcxg6QHyHyiCwo+TVa89LZc4iPkmRWQK2ARxi0PseJl8 BrvBzrN1BfFjhScCVN7mDAOUAQ5Dm/paKe/AUFnOurYRHzxiStozO1xjdI2E8sPs5aaK mxw7ShgV3WyLbP4f9aOSAUa5hrR/rGHapwIFCsa/VmVb4eIutoZqqAXTIJ6QPwzXOEUT qj+YDfQEZmLXHgpOB3nSZQ5WqrrYcotOdduzPk5kd9wTjSfNPgiNLIQCncHMHdkCx/Yq 9Q== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3rwfj79epv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 18 Jul 2023 12:06:19 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 36IC6IHJ006944 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 18 Jul 2023 12:06:18 GMT Received: from hu-mmanikan-blr.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Tue, 18 Jul 2023 05:06:11 -0700 From: Manikanta Mylavarapu To: , , , , , , , , , , , , , , , , , CC: , , , Subject: [V3,07/11] firmware: qcom_scm: ipq5332: add msa lock/unlock support Date: Tue, 18 Jul 2023 17:34:57 +0530 Message-ID: <20230718120501.3205661-8-quic_mmanikan@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230718120501.3205661-1-quic_mmanikan@quicinc.com> References: <20230718120501.3205661-1-quic_mmanikan@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: H4iKHfParW9wB009IOwq7iWwBnP6XOVV X-Proofpoint-ORIG-GUID: H4iKHfParW9wB009IOwq7iWwBnP6XOVV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-18_08,2023-07-18_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 mlxlogscore=999 impostorscore=0 clxscore=1015 phishscore=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 mlxscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307180110 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org IPQ5332 user pd remoteproc firmwares need to be locked with MSA(modem secure access) features. This patch add support to lock/unlock MSA features. Signed-off-by: Manikanta Mylavarapu --- drivers/firmware/qcom_scm.c | 78 ++++++++++++++++++++++++++ drivers/firmware/qcom_scm.h | 2 + include/linux/firmware/qcom/qcom_scm.h | 2 + 3 files changed, 82 insertions(+) diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index 5553201e4599..accb8d112980 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -680,6 +680,84 @@ bool qcom_scm_pas_supported(u32 peripheral) } EXPORT_SYMBOL(qcom_scm_pas_supported); +/** + * qcom_scm_msa_lock() - Lock given peripheral firmware region as MSA + * + * @peripheral: peripheral id + * + * Return 0 on success. + */ +int qcom_scm_msa_lock(u32 peripheral) +{ + int ret; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_PIL, + .cmd = QCOM_SCM_MSA_LOCK, + .arginfo = QCOM_SCM_ARGS(1), + .args[0] = peripheral, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + + if (!__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL, + QCOM_SCM_MSA_LOCK)) + return 0; + + ret = qcom_scm_clk_enable(); + if (ret) + return ret; + + ret = qcom_scm_bw_enable(); + if (ret) + return ret; + + ret = qcom_scm_call(__scm->dev, &desc, &res); + qcom_scm_bw_disable(); + qcom_scm_clk_disable(); + + return ret ? : res.result[0]; +} +EXPORT_SYMBOL(qcom_scm_msa_lock); + +/** + * qcom_scm_msa_unlock() - Unlock given peripheral MSA firmware region + * + * @peripheral: peripheral id + * + * Return 0 on success. + */ +int qcom_scm_msa_unlock(u32 peripheral) +{ + int ret; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_PIL, + .cmd = QCOM_SCM_MSA_UNLOCK, + .arginfo = QCOM_SCM_ARGS(1), + .args[0] = peripheral, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + + if (!__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL, + QCOM_SCM_MSA_UNLOCK)) + return 0; + + ret = qcom_scm_clk_enable(); + if (ret) + return ret; + + ret = qcom_scm_bw_enable(); + if (ret) + return ret; + + ret = qcom_scm_call(__scm->dev, &desc, &res); + qcom_scm_bw_disable(); + qcom_scm_clk_disable(); + + return ret ? : res.result[0]; +} +EXPORT_SYMBOL(qcom_scm_msa_unlock); + static int __qcom_scm_pas_mss_reset(struct device *dev, bool reset) { struct qcom_scm_desc desc = { diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h index 6ab5e7c77e8d..9480b0b57c3d 100644 --- a/drivers/firmware/qcom_scm.h +++ b/drivers/firmware/qcom_scm.h @@ -97,6 +97,8 @@ extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc, #define QCOM_SCM_PIL_PAS_SHUTDOWN 0x06 #define QCOM_SCM_PIL_PAS_IS_SUPPORTED 0x07 #define QCOM_SCM_PIL_PAS_MSS_RESET 0x0a +#define QCOM_SCM_MSA_LOCK 0x24 +#define QCOM_SCM_MSA_UNLOCK 0x25 #define QCOM_SCM_SVC_IO 0x05 #define QCOM_SCM_IO_READ 0x01 diff --git a/include/linux/firmware/qcom/qcom_scm.h b/include/linux/firmware/qcom/qcom_scm.h index 250ea4efb7cb..a150e2914483 100644 --- a/include/linux/firmware/qcom/qcom_scm.h +++ b/include/linux/firmware/qcom/qcom_scm.h @@ -81,6 +81,8 @@ extern int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr, extern int qcom_scm_pas_auth_and_reset(u32 peripheral); extern int qcom_scm_pas_shutdown(u32 peripheral); extern bool qcom_scm_pas_supported(u32 peripheral); +extern int qcom_scm_msa_lock(u32 peripheral); +extern int qcom_scm_msa_unlock(u32 peripheral); extern int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val); extern int qcom_scm_io_writel(phys_addr_t addr, unsigned int val);