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=-11.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable 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 06FFEC433E0 for ; Thu, 16 Jul 2020 13:43:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D253520760 for ; Thu, 16 Jul 2020 13:43:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="ep1TawxW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728879AbgGPNnZ (ORCPT ); Thu, 16 Jul 2020 09:43:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728853AbgGPNnY (ORCPT ); Thu, 16 Jul 2020 09:43:24 -0400 Received: from mail-pf1-x441.google.com (mail-pf1-x441.google.com [IPv6:2607:f8b0:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BCDF2C08C5CE for ; Thu, 16 Jul 2020 06:43:24 -0700 (PDT) Received: by mail-pf1-x441.google.com with SMTP id 207so3720503pfu.3 for ; Thu, 16 Jul 2020 06:43:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=O/6+NfT3FmDST8KjyhnoOiOkNPwqI4ZUC2DHBX7ohnc=; b=ep1TawxWMeklNAGbi6aT4uR6XdkF5y5wu7BBBYyqHATx6M5SYIum0JsxwFJT/6MGw5 IXi5FTnLqAzgSAbs84Cq1E65jL4WoN+s0OaULR+oWYbcGrAESKBP0CFphpJaXbVNYAsv h82oVysws3FAeQjILLHIkoybEOKzj8busoiT49Jdu7IUnxD+89cnJxwcFMUuJhgzwWr0 20Aj0hVRd6bveKrFopCeFoLAOgY/YkjMsKquRFrn3o7CUjA6dXParDl8vUsMG6FxtynW gpPl/Ke38NYEsevZrinPUAbTLc3LHz3vdcdE7xuOkF2nnxHBdy8ccQhTOnU8G9O9b9gS 6kDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=O/6+NfT3FmDST8KjyhnoOiOkNPwqI4ZUC2DHBX7ohnc=; b=B8bix2cR62VoPLxMdAkwdgAzV880Z9Y2AH821SOdQSB4t7b5WjNyKB+zX7ODxtqNhC tfocWO94KLJByCQF5lJrLKT+JOenvyoIkn52rtU06vvjr/1iKoBdB1BPucIcP433qIi5 FEbQp950vM8wXuYYhhOUuOpIazftKZjjs7cFHew8uzuJxAmvLT3+yL/NwgxhZmQggmDT hNAzhab3l/6o9SI9yAfdKr+kBL4rX9cnusLsF5ObgTDRell0nupxy7Xc0tNmbaMnEu9k 2o3luWmzyX7mtNsCQaKuh5DLv3ElKpRbwlgiS9OOKgQiFLrfG7d4rZuY063U7alKjYrs U/3w== X-Gm-Message-State: AOAM532vZYEQ/MU1VKTeFJ5Oogkm14DYDcZuaaugfKJqiwrcuhiskVRK fhXUNlt9KHmh/NshzmAVDx5a X-Google-Smtp-Source: ABdhPJz4atHR1ggQ0IAhYzhAEYbvwhob1uDqds0dtW5KcAVYv9BhAu3HrglfwkV/SitlUk9M0B/TGg== X-Received: by 2002:a62:7e0d:: with SMTP id z13mr3585622pfc.161.1594907004077; Thu, 16 Jul 2020 06:43:24 -0700 (PDT) Received: from Mani-XPS-13-9360 ([2409:4072:494:2704:9157:c271:c363:4849]) by smtp.gmail.com with ESMTPSA id i67sm5217466pfg.13.2020.07.16.06.43.19 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Thu, 16 Jul 2020 06:43:23 -0700 (PDT) Date: Thu, 16 Jul 2020 19:13:16 +0530 From: Manivannan Sadhasivam To: Sibi Sankar Cc: bjorn.andersson@linaro.org, agross@kernel.org, linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, evgreen@chromium.org, ohad@wizery.com Subject: Re: [PATCH 2/3] remoteproc: qcom_q6v5_mss: Add MBA log extraction support Message-ID: <20200716134316.GI3271@Mani-XPS-13-9360> References: <20200716123630.21892-1-sibis@codeaurora.org> <20200716123630.21892-3-sibis@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200716123630.21892-3-sibis@codeaurora.org> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sibi, On Thu, Jul 16, 2020 at 06:06:29PM +0530, Sibi Sankar wrote: > On SC7180 the MBA firmware stores the bootup text logs in a 4K segment > at the beginning of the MBA region. Add support to extract the logs > which will be useful to debug mba boot/authentication issues. > > Signed-off-by: Sibi Sankar > --- > drivers/remoteproc/qcom_q6v5_mss.c | 41 ++++++++++++++++++++++++++---- > 1 file changed, 36 insertions(+), 5 deletions(-) > > diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c > index 95e21ed607cb9..4ddf084b2c6fc 100644 > --- a/drivers/remoteproc/qcom_q6v5_mss.c > +++ b/drivers/remoteproc/qcom_q6v5_mss.c > @@ -9,6 +9,7 @@ > > #include > #include > +#include > #include > #include > #include > @@ -37,6 +38,8 @@ > > #define MPSS_CRASH_REASON_SMEM 421 > > +#define MBA_LOG_SIZE SZ_4K > + > /* RMB Status Register Values */ > #define RMB_PBL_SUCCESS 0x1 > > @@ -139,6 +142,7 @@ struct rproc_hexagon_res { > int version; > bool need_mem_protection; > bool has_alt_reset; > + bool has_mba_logs; > bool has_spare_reg; > }; > > @@ -200,6 +204,7 @@ struct q6v5 { > struct qcom_sysmon *sysmon; > bool need_mem_protection; > bool has_alt_reset; > + bool has_mba_logs; > bool has_spare_reg; > int mpss_perm; > int mba_perm; > @@ -518,6 +523,19 @@ static int q6v5_rmb_mba_wait(struct q6v5 *qproc, u32 status, int ms) > return val; > } > > +static void q6v5_dump_mba_logs(struct q6v5 *qproc) > +{ > + struct rproc *rproc = qproc->rproc; > + void *data; > + > + data = vmalloc(MBA_LOG_SIZE); Is there any specific reason to use vmalloc for the size of 4K? Thanks, Mani > + if (!data) > + return; > + > + memcpy(data, qproc->mba_region, MBA_LOG_SIZE); > + dev_coredumpv(&rproc->dev, data, MBA_LOG_SIZE, GFP_KERNEL); > +} > + > static int q6v5proc_reset(struct q6v5 *qproc) > { > u32 val; > @@ -838,6 +856,7 @@ static int q6v5_mba_load(struct q6v5 *qproc) > { > int ret; > int xfermemop_ret; > + bool mba_load_err = false; > > qcom_q6v5_prepare(&qproc->q6v5); > > @@ -931,7 +950,7 @@ static int q6v5_mba_load(struct q6v5 *qproc) > q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_q6); > q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem); > q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_nc); > - > + mba_load_err = true; > reclaim_mba: > xfermemop_ret = q6v5_xfer_mem_ownership(qproc, &qproc->mba_perm, true, > false, qproc->mba_phys, > @@ -939,6 +958,8 @@ static int q6v5_mba_load(struct q6v5 *qproc) > if (xfermemop_ret) { > dev_err(qproc->dev, > "Failed to reclaim mba buffer, system may become unstable\n"); > + } else if (qproc->has_mba_logs & mba_load_err) { > + q6v5_dump_mba_logs(qproc); > } > > disable_active_clks: > @@ -968,7 +989,7 @@ static int q6v5_mba_load(struct q6v5 *qproc) > return ret; > } > > -static void q6v5_mba_reclaim(struct q6v5 *qproc) > +static void q6v5_mba_reclaim(struct q6v5 *qproc, bool err_path) > { > int ret; > u32 val; > @@ -1006,6 +1027,9 @@ static void q6v5_mba_reclaim(struct q6v5 *qproc) > qproc->mba_size); > WARN_ON(ret); > > + if (qproc->has_mba_logs && err_path && !ret) > + q6v5_dump_mba_logs(qproc); > + > ret = qcom_q6v5_unprepare(&qproc->q6v5); > if (ret) { > q6v5_pds_disable(qproc, qproc->proxy_pds, > @@ -1255,7 +1279,7 @@ static void qcom_q6v5_dump_segment(struct rproc *rproc, > false, true, > qproc->mpss_phys, > qproc->mpss_size); > - q6v5_mba_reclaim(qproc); > + q6v5_mba_reclaim(qproc, false); > } > } > } > @@ -1297,7 +1321,7 @@ static int q6v5_start(struct rproc *rproc) > return 0; > > reclaim_mpss: > - q6v5_mba_reclaim(qproc); > + q6v5_mba_reclaim(qproc, true); > > return ret; > } > @@ -1313,7 +1337,7 @@ static int q6v5_stop(struct rproc *rproc) > if (ret == -ETIMEDOUT) > dev_err(qproc->dev, "timed out on wait\n"); > > - q6v5_mba_reclaim(qproc); > + q6v5_mba_reclaim(qproc, false); > > return 0; > } > @@ -1717,6 +1741,7 @@ static int q6v5_probe(struct platform_device *pdev) > > qproc->version = desc->version; > qproc->need_mem_protection = desc->need_mem_protection; > + qproc->has_mba_logs = desc->has_mba_logs; > > ret = qcom_q6v5_init(&qproc->q6v5, pdev, rproc, MPSS_CRASH_REASON_SMEM, > qcom_msa_handover); > @@ -1808,6 +1833,7 @@ static const struct rproc_hexagon_res sc7180_mss = { > }, > .need_mem_protection = true, > .has_alt_reset = false, > + .has_mba_logs = true, > .has_spare_reg = true, > .version = MSS_SC7180, > }; > @@ -1843,6 +1869,7 @@ static const struct rproc_hexagon_res sdm845_mss = { > }, > .need_mem_protection = true, > .has_alt_reset = true, > + .has_mba_logs = true, > .has_spare_reg = false, > .version = MSS_SDM845, > }; > @@ -1870,6 +1897,7 @@ static const struct rproc_hexagon_res msm8998_mss = { > }, > .need_mem_protection = true, > .has_alt_reset = false, > + .has_mba_logs = false, > .has_spare_reg = false, > .version = MSS_MSM8998, > }; > @@ -1900,6 +1928,7 @@ static const struct rproc_hexagon_res msm8996_mss = { > }, > .need_mem_protection = true, > .has_alt_reset = false, > + .has_mba_logs = false, > .has_spare_reg = false, > .version = MSS_MSM8996, > }; > @@ -1933,6 +1962,7 @@ static const struct rproc_hexagon_res msm8916_mss = { > }, > .need_mem_protection = false, > .has_alt_reset = false, > + .has_mba_logs = false, > .has_spare_reg = false, > .version = MSS_MSM8916, > }; > @@ -1974,6 +2004,7 @@ static const struct rproc_hexagon_res msm8974_mss = { > }, > .need_mem_protection = false, > .has_alt_reset = false, > + .has_mba_logs = false, > .has_spare_reg = false, > .version = MSS_MSM8974, > }; > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >