From patchwork Mon Dec 30 05:00:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sibi Sankar X-Patchwork-Id: 11312605 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 22FE91395 for ; Mon, 30 Dec 2019 05:00:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 019F420748 for ; Mon, 30 Dec 2019 05:00:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="QJMp7SAq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727169AbfL3FAn (ORCPT ); Mon, 30 Dec 2019 00:00:43 -0500 Received: from mail25.static.mailgun.info ([104.130.122.25]:19022 "EHLO mail25.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727126AbfL3FAk (ORCPT ); Mon, 30 Dec 2019 00:00:40 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1577682040; h=Content-Transfer-Encoding: MIME-Version: Message-Id: Date: Subject: Cc: To: From: Sender; bh=NW92puXAkgQ9HjP3tiVheK7NWnsGpPSlSTDUpm/toq0=; b=QJMp7SAqhYV5v1c7Yx6P88QGtZI4uq/aYzC+EigEMF+4143MwHXOmvU2U0uKo7x11eLvVvA1 Ul9WhfNiLQj/Xx+gjtVtTh50bVmqgU1OhmmKPMFR83o3yUY3BUBvOjgaYTV72nb5RKzarL5/ W0janfDu08DwCXf9a7Q1yZZtISQ= X-Mailgun-Sending-Ip: 104.130.122.25 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e098469.7f7754ac5d50-smtp-out-n01; Mon, 30 Dec 2019 05:00:25 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 60B83C447AA; Mon, 30 Dec 2019 05:00:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from blr-ubuntu-87.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sibis) by smtp.codeaurora.org (Postfix) with ESMTPSA id 6D6A5C447A0; Mon, 30 Dec 2019 05:00:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 6D6A5C447A0 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=sibis@codeaurora.org From: Sibi Sankar To: bjorn.andersson@linaro.org, srinivas.kandagatla@linaro.org, robh+dt@kernel.org, tsoni@codeaurora.org Cc: agross@kernel.org, mark.rutland@arm.com, linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Sibi Sankar Subject: [PATCH v3 0/3] Introduce Protection Domain Restart (PDR) Helpers Date: Mon, 30 Dec 2019 10:30:05 +0530 Message-Id: <20191230050008.8143-1-sibis@codeaurora.org> X-Mailer: git-send-email 2.22.1 MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Qualcomm SoCs (starting with MSM8998) allow for multiple protection domains (PDs) to run on the same Q6 sub-system. This allows for services like AVS AUDIO to have their own separate address space and crash/recover without disrupting the other PDs running on the same Q6 ADSP. This patch series introduces pdr helper library and adds PD tracking functionality for "avs/audio" allowing apr services to register themselves asynchronously once the dependent PDs are up. V3: * patches 2 and 3 remain unchanged. * reset servloc_addr/servreg_addr. * fixup the helpers to handle servloc_work/servreg_work asynchronously. * fixup useage of list_lock across traversals, insertions and deletions. * fixup the helpers to use a single lookup list. * skip waiting for response on ind_ack send. * introduce pdr_servreg_link_create to re-use existing qmi connection to servreg instances. This helps tracking PDs running on the same remote processor. * have a per node curr_state in pdr_list_node to preserve all state updates during indack_cb. * introduce additional servreg_service_state values to help the client distinguish between a fatal and non-fatal pdr_lookup errors. * re-order pdr_handle_release sequence. * fixup "!ind_msg->service_path returns true always" warning. * fixup comments. V2: * fixup pd_status callback to return void. * return 0 from pdr_get_domain_list on success. * introduce status_lock to linearize the pd_status reported back to the clients. * use the correct service name length across various string operations performed. * service locator will now schedule the pending lookups registered when it comes up. * other minor cleanups that Bjorn suggested. * use pr_warn to indicate that the wait for service locator timed out. * add Bjorn/Srini's "Reviewed-by" for the dt-bindings. To Do: * Add support for pd tracking in fastrpc driver. Sibi Sankar (3): soc: qcom: Introduce Protection Domain Restart helpers dt-bindings: soc: qcom: apr: Add protection domain bindings soc: qcom: apr: Add avs/audio tracking functionality .../devicetree/bindings/soc/qcom/qcom,apr.txt | 59 ++ drivers/soc/qcom/Kconfig | 6 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/apr.c | 100 ++- drivers/soc/qcom/pdr_interface.c | 709 ++++++++++++++++++ drivers/soc/qcom/pdr_internal.h | 375 +++++++++ include/linux/soc/qcom/apr.h | 1 + include/linux/soc/qcom/pdr.h | 109 +++ include/linux/soc/qcom/qmi.h | 1 + 9 files changed, 1350 insertions(+), 11 deletions(-) create mode 100644 drivers/soc/qcom/pdr_interface.c create mode 100644 drivers/soc/qcom/pdr_internal.h create mode 100644 include/linux/soc/qcom/pdr.h