From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0849C48BD1 for ; Fri, 11 Jun 2021 17:01:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BC01D613D0 for ; Fri, 11 Jun 2021 17:01:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231446AbhFKRDB (ORCPT ); Fri, 11 Jun 2021 13:03:01 -0400 Received: from foss.arm.com ([217.140.110.172]:35706 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231431AbhFKRC7 (ORCPT ); Fri, 11 Jun 2021 13:02:59 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D1F951477; Fri, 11 Jun 2021 10:01:00 -0700 (PDT) Received: from e120937-lin.home (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 84B263F719; Fri, 11 Jun 2021 10:00:57 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, virtualization@lists.linux-foundation.org, virtio-dev@lists.oasis-open.org Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com, Jonathan.Cameron@Huawei.com, f.fainelli@gmail.com, etienne.carriere@linaro.org, vincent.guittot@linaro.org, souvik.chakravarty@arm.com, cristian.marussi@arm.com, igor.skalkin@opensynergy.com, peter.hilber@opensynergy.com, alex.bennee@linaro.org, jean-philippe@linaro.org, mikhail.golubev@opensynergy.com, anton.yakovlev@opensynergy.com, Vasyl.Vavrychuk@opensynergy.com, Andriy.Tryshnivskyy@opensynergy.com Subject: [PATCH v4 10/16] firmware: arm_scmi: Add per-device transport private info Date: Fri, 11 Jun 2021 17:59:31 +0100 Message-Id: <20210611165937.701-11-cristian.marussi@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210611165937.701-1-cristian.marussi@arm.com> References: <20210611165937.701-1-cristian.marussi@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Peter Hilber The scmi-virtio transport will link a supplier device to the arm-scmi device in the link_supplier() op. The transport should then save a pointer to the linked device. To enable this, add a transport private info to the scmi_info. (The scmi_info is already reachable through the arm-scmi device driver_data.) Signed-off-by: Peter Hilber --- drivers/firmware/arm_scmi/common.h | 2 ++ drivers/firmware/arm_scmi/driver.c | 35 ++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h index a31194b3000a..7219970fc5eb 100644 --- a/drivers/firmware/arm_scmi/common.h +++ b/drivers/firmware/arm_scmi/common.h @@ -389,6 +389,8 @@ extern const struct scmi_desc scmi_mailbox_desc; extern const struct scmi_desc scmi_smc_desc; #endif +int scmi_set_transport_info(struct device *dev, void *transport_info); +void *scmi_get_transport_info(struct device *dev); void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr); void scmi_free_channel(struct scmi_chan_info *cinfo, struct idr *idr, int id); diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index 69fa97250d98..bb2de15554a9 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -138,6 +138,7 @@ struct scmi_protocol_instance { * @active_protocols: IDR storing device_nodes for protocols actually defined * in the DT and confirmed as implemented by fw. * @notify_priv: Pointer to private data structure specific to notifications. + * @transport_info: Transport private info * @node: List head * @users: Number of users of this instance */ @@ -156,6 +157,7 @@ struct scmi_info { u8 *protocols_imp; struct idr active_protocols; void *notify_priv; + void *transport_info; struct list_head node; int users; }; @@ -679,6 +681,39 @@ void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr) } } +/** + * scmi_set_transport_info() - Set transport private info + * + * @dev: SCMI instance device + * @transport_info: transport private info + * + * Return: 0 on success, otherwise error. + */ +int scmi_set_transport_info(struct device *dev, void *transport_info) +{ + struct scmi_info *info = dev_get_drvdata(dev); + + if (!info) + return -EBADR; + + info->transport_info = transport_info; + return 0; +} + +/** + * scmi_get_transport_info() - Get transport private info + * + * @dev: SCMI instance device + * + * Return: transport private info on success, otherwise NULL. + */ +void *scmi_get_transport_info(struct device *dev) +{ + struct scmi_info *info = dev_get_drvdata(dev); + + return info ? info->transport_info : NULL; +} + /** * xfer_put() - Release a transmit message * -- 2.17.1