From patchwork Tue Sep 15 06:55:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sai Prakash Ranjan X-Patchwork-Id: 292863 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 3C405C433E2 for ; Tue, 15 Sep 2020 06:56:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0506C216C4 for ; Tue, 15 Sep 2020 06:56:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="NvHWKnDi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726131AbgIOG4J (ORCPT ); Tue, 15 Sep 2020 02:56:09 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:40132 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726087AbgIOG4G (ORCPT ); Tue, 15 Sep 2020 02:56:06 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1600152965; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=31GvM1X5XrPQR2a24S8gJeyLSwWFdH/nLg2HUCMHilk=; b=NvHWKnDiK30QDPobDuop2EC8cmBYwjyBy3QxSlxgMaTAWgCE6gvC1ZyIyCitB/loxuBlgRmH KiYhiDQMsBOKnudLx82v0QHN+IzSWMAhYcizpyn0HUgE+dm+MvNaBP2zcJEepdOp5Qu8BC9p JveMo2ZEt0Ql+g7Auzv+1TkdJ/w= X-Mailgun-Sending-Ip: 69.72.43.7 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 smtp-out-n03.prod.us-west-2.postgun.com with SMTP id 5f6065717f21d51b30191141 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 15 Sep 2020 06:55:45 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 0FE7AC433C8; Tue, 15 Sep 2020 06:55:45 +0000 (UTC) Received: from blr-ubuntu-253.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: saiprakash.ranjan) by smtp.codeaurora.org (Postfix) with ESMTPSA id 68322C433C8; Tue, 15 Sep 2020 06:55:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 68322C433C8 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=fail smtp.mailfrom=saiprakash.ranjan@codeaurora.org From: Sai Prakash Ranjan To: Andy Gross , Bjorn Andersson , Douglas Anderson , Stephen Boyd Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, "Isaac J. Manjarres" , Sai Prakash Ranjan Subject: [PATCHv5 2/2] soc: qcom: llcc: Support chipsets that can write to llcc Date: Tue, 15 Sep 2020 12:25:26 +0530 Message-Id: X-Mailer: git-send-email 2.27.0 In-Reply-To: References: 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 From: "Isaac J. Manjarres" Older chipsets may not be allowed to configure certain LLCC registers as that is handled by the secure side software. However, this is not the case for newer chipsets and they must configure these registers according to the contents of the SCT table, while keeping in mind that older targets may not have these capabilities. So add support to allow such configuration of registers to enable capacity based allocation and power collapse retention for capable chipsets. Reason for choosing capacity based allocation rather than the default way based allocation is because capacity based allocation allows more finer grain partition and provides more flexibility in configuration. As for the retention through power collapse, it has an advantage where the cache hits are more when we wake up from power collapse although it does burn more power but the exact power numbers are not known at the moment. Signed-off-by: Isaac J. Manjarres Reviewed-by: Douglas Anderson [saiprakash.ranjan@codeaurora.org: use existing config and reword commit msg] Signed-off-by: Sai Prakash Ranjan Reviewed-by: Stephen Boyd --- drivers/soc/qcom/llcc-qcom.c | 32 ++++++++++++++++++++++++++++---- 1 file changed, 28 insertions(+), 4 deletions(-) diff --git a/drivers/soc/qcom/llcc-qcom.c b/drivers/soc/qcom/llcc-qcom.c index 14311060099d..8b79bbf96f52 100644 --- a/drivers/soc/qcom/llcc-qcom.c +++ b/drivers/soc/qcom/llcc-qcom.c @@ -45,6 +45,9 @@ #define LLCC_TRP_ATTR0_CFGn(n) (0x21000 + SZ_8 * n) #define LLCC_TRP_ATTR1_CFGn(n) (0x21004 + SZ_8 * n) +#define LLCC_TRP_SCID_DIS_CAP_ALLOC 0x21f00 +#define LLCC_TRP_PCB_ACT 0x21f04 + #define BANK_OFFSET_STRIDE 0x80000 /** @@ -89,6 +92,7 @@ struct llcc_slice_config { struct qcom_llcc_config { const struct llcc_slice_config *sct_data; int size; + bool need_llcc_cfg; }; static const struct llcc_slice_config sc7180_data[] = { @@ -122,11 +126,13 @@ static const struct llcc_slice_config sdm845_data[] = { static const struct qcom_llcc_config sc7180_cfg = { .sct_data = sc7180_data, .size = ARRAY_SIZE(sc7180_data), + .need_llcc_cfg = true, }; static const struct qcom_llcc_config sdm845_cfg = { .sct_data = sdm845_data, .size = ARRAY_SIZE(sdm845_data), + .need_llcc_cfg = false, }; static struct llcc_drv_data *drv_data = (void *) -EPROBE_DEFER; @@ -318,7 +324,8 @@ size_t llcc_get_slice_size(struct llcc_slice_desc *desc) } EXPORT_SYMBOL_GPL(llcc_get_slice_size); -static int _qcom_llcc_cfg_program(const struct llcc_slice_config *config) +static int _qcom_llcc_cfg_program(const struct llcc_slice_config *config, + const struct qcom_llcc_config *cfg) { int ret; u32 attr1_cfg; @@ -361,6 +368,22 @@ static int _qcom_llcc_cfg_program(const struct llcc_slice_config *config) if (ret) return ret; + if (cfg->need_llcc_cfg) { + u32 disable_cap_alloc, retain_pc; + + disable_cap_alloc = config->dis_cap_alloc << config->slice_id; + ret = regmap_write(drv_data->bcast_regmap, + LLCC_TRP_SCID_DIS_CAP_ALLOC, disable_cap_alloc); + if (ret) + return ret; + + retain_pc = config->retain_on_pc << config->slice_id; + ret = regmap_write(drv_data->bcast_regmap, + LLCC_TRP_PCB_ACT, retain_pc); + if (ret) + return ret; + } + if (config->activate_on_init) { desc.slice_id = config->slice_id; ret = llcc_slice_activate(&desc); @@ -369,7 +392,8 @@ static int _qcom_llcc_cfg_program(const struct llcc_slice_config *config) return ret; } -static int qcom_llcc_cfg_program(struct platform_device *pdev) +static int qcom_llcc_cfg_program(struct platform_device *pdev, + const struct qcom_llcc_config *cfg) { int i; u32 sz; @@ -380,7 +404,7 @@ static int qcom_llcc_cfg_program(struct platform_device *pdev) llcc_table = drv_data->cfg; for (i = 0; i < sz; i++) { - ret = _qcom_llcc_cfg_program(&llcc_table[i]); + ret = _qcom_llcc_cfg_program(&llcc_table[i], cfg); if (ret) return ret; } @@ -488,7 +512,7 @@ static int qcom_llcc_probe(struct platform_device *pdev) mutex_init(&drv_data->lock); platform_set_drvdata(pdev, drv_data); - ret = qcom_llcc_cfg_program(pdev); + ret = qcom_llcc_cfg_program(pdev, cfg); if (ret) goto err;