From patchwork Fri Aug 20 11:23:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Odelu Kukatla X-Patchwork-Id: 500753 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,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, 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 EDFC0C432BE for ; Fri, 20 Aug 2021 11:24:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB2006101A for ; Fri, 20 Aug 2021 11:24:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239494AbhHTLZO (ORCPT ); Fri, 20 Aug 2021 07:25:14 -0400 Received: from so254-9.mailgun.net ([198.61.254.9]:48986 "EHLO so254-9.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237660AbhHTLZM (ORCPT ); Fri, 20 Aug 2021 07:25:12 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1629458675; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=zZeKipssbda40wyNFAZfFOz4YW5CWt9RHvdzfygSQO0=; b=OAPij8nbqCfeu81wwJbO6if9Qt0v/XZxg8IngclmK7vbUzEcLYC+X6VD2AjvMWTQXuRNt7JF 4IevfvZdx7qx/YUH1T3lRwroOjQb9NXTh/wk38/gWBHd7CrpxgE6jQ2tLguTeXXNj8sqRRd9 L65sImB9FpcrBUqmWPT2yfgBgNE= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyI5ZDFmMiIsICJsaW51eC1wbUB2Z2VyLmtlcm5lbC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n04.prod.us-west-2.postgun.com with SMTP id 611f90dbe82147d57f41b07c (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 20 Aug 2021 11:24:11 GMT Sender: okukatla=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 09F4BC43619; Fri, 20 Aug 2021 11:24:11 +0000 (UTC) Received: from okukatla1-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: okukatla) by smtp.codeaurora.org (Postfix) with ESMTPSA id C171CC4361A; Fri, 20 Aug 2021 11:24:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org C171CC4361A 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=codeaurora.org From: Odelu Kukatla To: georgi.djakov@linaro.org, bjorn.andersson@linaro.org, evgreen@google.com, Andy Gross , Georgi Djakov , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: sboyd@kernel.org, mdtipton@codeaurora.org, sibis@codeaurora.org, saravanak@google.com, okukatla@codeaurora.org, seansw@qti.qualcomm.com, elder@linaro.org, linux-arm-msm-owner@vger.kernel.org Subject: [v7 2/3] interconnect: qcom: Add EPSS L3 support on SC7280 Date: Fri, 20 Aug 2021 16:53:40 +0530 Message-Id: <1629458622-4915-3-git-send-email-okukatla@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1629458622-4915-1-git-send-email-okukatla@codeaurora.org> References: <1629458622-4915-1-git-send-email-okukatla@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add Epoch Subsystem (EPSS) L3 interconnect provider support on SC7280 SoCs. Signed-off-by: Odelu Kukatla --- drivers/interconnect/qcom/osm-l3.c | 138 ++++++++++++++++++++++++++++++------- drivers/interconnect/qcom/sc7280.h | 10 +++ 2 files changed, 125 insertions(+), 23 deletions(-) diff --git a/drivers/interconnect/qcom/osm-l3.c b/drivers/interconnect/qcom/osm-l3.c index c7af143..2e3882c 100644 --- a/drivers/interconnect/qcom/osm-l3.c +++ b/drivers/interconnect/qcom/osm-l3.c @@ -9,12 +9,14 @@ #include #include #include +#include #include #include #include #include "sc7180.h" +#include "sc7280.h" #include "sc8180x.h" #include "sdm845.h" #include "sm8150.h" @@ -33,17 +35,33 @@ /* EPSS Register offsets */ #define EPSS_LUT_ROW_SIZE 4 +#define EPSS_REG_L3_VOTE 0x90 #define EPSS_REG_FREQ_LUT 0x100 #define EPSS_REG_PERF_STATE 0x320 +#define EPSS_CORE_OFFSET 0x4 +#define EPSS_L3_VOTE_REG(base, cpu)\ + (((base) + EPSS_REG_L3_VOTE) +\ + ((cpu) * EPSS_CORE_OFFSET)) -#define OSM_L3_MAX_LINKS 1 +#define L3_DOMAIN_CNT 4 #define to_osm_l3_provider(_provider) \ container_of(_provider, struct qcom_osm_l3_icc_provider, provider) +/** + * struct qcom_osm_l3_icc_provider - Qualcomm specific interconnect provider + * @domain_base: an array of base address for each clock domain + * @max_state: max supported frequency level + * @per_core_dcvs: flag used to indicate whether the frequency scaling + * for each core is enabled + * @reg_perf_state: requested frequency level + * @lut_tables: an array of supported frequency levels + * @provider: interconnect provider of this node + */ struct qcom_osm_l3_icc_provider { - void __iomem *base; + void __iomem *domain_base[L3_DOMAIN_CNT]; unsigned int max_state; + bool per_core_dcvs; unsigned int reg_perf_state; unsigned long lut_tables[LUT_MAX_ENTRIES]; struct icc_provider provider; @@ -52,36 +70,48 @@ struct qcom_osm_l3_icc_provider { /** * struct qcom_osm_l3_node - Qualcomm specific interconnect nodes * @name: the node name used in debugfs - * @links: an array of nodes where we can go next while traversing * @id: a unique node identifier - * @num_links: the total number of @links * @buswidth: width of the interconnect between a node and the bus + * @domain: clock domain of the cpu node + * @cpu: cpu instance within its clock domain + * @num_links: the total number of @links + * @links: an array of nodes where we can go next while traversing */ struct qcom_osm_l3_node { const char *name; - u16 links[OSM_L3_MAX_LINKS]; u16 id; - u16 num_links; u16 buswidth; + u8 domain; + u8 cpu; + u16 num_links; + u16 links[]; }; struct qcom_osm_l3_desc { const struct qcom_osm_l3_node **nodes; size_t num_nodes; + bool per_core_dcvs; unsigned int lut_row_size; unsigned int reg_freq_lut; unsigned int reg_perf_state; }; -#define DEFINE_QNODE(_name, _id, _buswidth, ...) \ +#define __DEFINE_QNODE(_name, _id, _buswidth, _domain, _cpu, ...) \ static const struct qcom_osm_l3_node _name = { \ .name = #_name, \ .id = _id, \ .buswidth = _buswidth, \ + .domain = _domain, \ + .cpu = _cpu, \ .num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })), \ .links = { __VA_ARGS__ }, \ } +#define DEFINE_QNODE(_name, _id, _buswidth, ...) \ + __DEFINE_QNODE(_name, _id, _buswidth, 0, 0, __VA_ARGS__) +#define DEFINE_DCVS_QNODE(_name, _id, _buswidth, _domain, _cpu, ...) \ + __DEFINE_QNODE(_name, _id, _buswidth, _domain, _cpu, __VA_ARGS__) + DEFINE_QNODE(sdm845_osm_apps_l3, SDM845_MASTER_OSM_L3_APPS, 16, SDM845_SLAVE_OSM_L3); DEFINE_QNODE(sdm845_osm_l3, SDM845_SLAVE_OSM_L3, 16); @@ -162,26 +192,80 @@ static const struct qcom_osm_l3_desc sm8250_icc_epss_l3 = { .reg_perf_state = EPSS_REG_PERF_STATE, }; +DEFINE_DCVS_QNODE(sc7280_epss_apps_l3, SC7280_MASTER_EPSS_L3_APPS, 32, 0, 0, + SC7280_SLAVE_EPSS_L3_SHARED, SC7280_SLAVE_EPSS_L3_CPU0, + SC7280_SLAVE_EPSS_L3_CPU1, SC7280_SLAVE_EPSS_L3_CPU2, + SC7280_SLAVE_EPSS_L3_CPU3, SC7280_SLAVE_EPSS_L3_CPU4, + SC7280_SLAVE_EPSS_L3_CPU5, SC7280_SLAVE_EPSS_L3_CPU6, + SC7280_SLAVE_EPSS_L3_CPU7); +DEFINE_DCVS_QNODE(sc7280_epss_l3_shared, SC7280_SLAVE_EPSS_L3_SHARED, 32, 0, 0); +DEFINE_DCVS_QNODE(sc7280_epss_l3_cpu0, SC7280_SLAVE_EPSS_L3_CPU0, 32, 1, 0); +DEFINE_DCVS_QNODE(sc7280_epss_l3_cpu1, SC7280_SLAVE_EPSS_L3_CPU1, 32, 1, 1); +DEFINE_DCVS_QNODE(sc7280_epss_l3_cpu2, SC7280_SLAVE_EPSS_L3_CPU2, 32, 1, 2); +DEFINE_DCVS_QNODE(sc7280_epss_l3_cpu3, SC7280_SLAVE_EPSS_L3_CPU3, 32, 1, 3); +DEFINE_DCVS_QNODE(sc7280_epss_l3_cpu4, SC7280_SLAVE_EPSS_L3_CPU4, 32, 2, 0); +DEFINE_DCVS_QNODE(sc7280_epss_l3_cpu5, SC7280_SLAVE_EPSS_L3_CPU5, 32, 2, 1); +DEFINE_DCVS_QNODE(sc7280_epss_l3_cpu6, SC7280_SLAVE_EPSS_L3_CPU6, 32, 2, 2); +DEFINE_DCVS_QNODE(sc7280_epss_l3_cpu7, SC7280_SLAVE_EPSS_L3_CPU7, 32, 3, 0); + +static const struct qcom_osm_l3_node *sc7280_epss_l3_nodes[] = { + [MASTER_EPSS_L3_APPS] = &sc7280_epss_apps_l3, + [SLAVE_EPSS_L3_SHARED] = &sc7280_epss_l3_shared, + [SLAVE_EPSS_L3_CPU0] = &sc7280_epss_l3_cpu0, + [SLAVE_EPSS_L3_CPU1] = &sc7280_epss_l3_cpu1, + [SLAVE_EPSS_L3_CPU2] = &sc7280_epss_l3_cpu2, + [SLAVE_EPSS_L3_CPU3] = &sc7280_epss_l3_cpu3, + [SLAVE_EPSS_L3_CPU4] = &sc7280_epss_l3_cpu4, + [SLAVE_EPSS_L3_CPU5] = &sc7280_epss_l3_cpu5, + [SLAVE_EPSS_L3_CPU6] = &sc7280_epss_l3_cpu6, + [SLAVE_EPSS_L3_CPU7] = &sc7280_epss_l3_cpu7, +}; + +static const struct qcom_osm_l3_desc sc7280_icc_epss_l3 = { + .nodes = sc7280_epss_l3_nodes, + .num_nodes = ARRAY_SIZE(sc7280_epss_l3_nodes), + .per_core_dcvs = true, + .lut_row_size = EPSS_LUT_ROW_SIZE, + .reg_freq_lut = EPSS_REG_FREQ_LUT, + .reg_perf_state = EPSS_REG_PERF_STATE, +}; + +static u32 qcom_osm_l3_aggregate_peak(struct icc_node *src, struct icc_node *dst) +{ + struct icc_node *n; + u32 agg_peak = 0; + u32 agg_avg = 0; + struct qcom_osm_l3_icc_provider *qp; + struct icc_provider *provider; + + provider = src->provider; + qp = to_osm_l3_provider(provider); + + /* Skip aggregation when per core l3 scaling is enabled */ + if (qp->per_core_dcvs) + return dst->peak_bw; + + list_for_each_entry(n, &provider->nodes, node_list) + provider->aggregate(n, 0, n->avg_bw, n->peak_bw, &agg_avg, &agg_peak); + + agg_peak = max(agg_avg, agg_peak); + + return agg_peak; +} + static int qcom_osm_l3_set(struct icc_node *src, struct icc_node *dst) { struct qcom_osm_l3_icc_provider *qp; struct icc_provider *provider; const struct qcom_osm_l3_node *qn; - struct icc_node *n; unsigned int index; - u32 agg_peak = 0; - u32 agg_avg = 0; u64 rate; - qn = src->data; + qn = dst->data; provider = src->provider; qp = to_osm_l3_provider(provider); - list_for_each_entry(n, &provider->nodes, node_list) - provider->aggregate(n, 0, n->avg_bw, n->peak_bw, - &agg_avg, &agg_peak); - - rate = max(agg_avg, agg_peak); + rate = qcom_osm_l3_aggregate_peak(src, dst); rate = icc_units_to_bps(rate); do_div(rate, qn->buswidth); @@ -190,7 +274,10 @@ static int qcom_osm_l3_set(struct icc_node *src, struct icc_node *dst) break; } - writel_relaxed(index, qp->base + qp->reg_perf_state); + if (qp->per_core_dcvs) + writel_relaxed(index, EPSS_L3_VOTE_REG(qp->domain_base[qn->domain], qn->cpu)); + else + writel_relaxed(index, qp->domain_base[qn->domain] + qp->reg_perf_state); return 0; } @@ -205,7 +292,7 @@ static int qcom_osm_l3_remove(struct platform_device *pdev) static int qcom_osm_l3_probe(struct platform_device *pdev) { - u32 info, src, lval, i, prev_freq = 0, freq; + u32 info, src, lval, i = 0, prev_freq = 0, freq; static unsigned long hw_rate, xo_rate; struct qcom_osm_l3_icc_provider *qp; const struct qcom_osm_l3_desc *desc; @@ -235,12 +322,15 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) if (!qp) return -ENOMEM; - qp->base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(qp->base)) - return PTR_ERR(qp->base); + while (of_get_address(pdev->dev.of_node, i, NULL, NULL)) { + qp->domain_base[i] = devm_platform_ioremap_resource(pdev, i); + if (IS_ERR(qp->domain_base[i])) + return PTR_ERR(qp->domain_base[i]); + i++; + } /* HW should be in enabled state to proceed */ - if (!(readl_relaxed(qp->base + REG_ENABLE) & 0x1)) { + if (!(readl_relaxed(qp->domain_base[0] + REG_ENABLE) & 0x1)) { dev_err(&pdev->dev, "error hardware not enabled\n"); return -ENODEV; } @@ -252,7 +342,7 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) qp->reg_perf_state = desc->reg_perf_state; for (i = 0; i < LUT_MAX_ENTRIES; i++) { - info = readl_relaxed(qp->base + desc->reg_freq_lut + + info = readl_relaxed(qp->domain_base[0] + desc->reg_freq_lut + i * desc->lut_row_size); src = FIELD_GET(LUT_SRC, info); lval = FIELD_GET(LUT_L_VAL, info); @@ -271,6 +361,7 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) prev_freq = freq; } qp->max_state = i; + qp->per_core_dcvs = desc->per_core_dcvs; qnodes = desc->nodes; num_nodes = desc->num_nodes; @@ -326,6 +417,7 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) static const struct of_device_id osm_l3_of_match[] = { { .compatible = "qcom,sc7180-osm-l3", .data = &sc7180_icc_osm_l3 }, + { .compatible = "qcom,sc7280-epss-l3", .data = &sc7280_icc_epss_l3 }, { .compatible = "qcom,sdm845-osm-l3", .data = &sdm845_icc_osm_l3 }, { .compatible = "qcom,sm8150-osm-l3", .data = &sm8150_icc_osm_l3 }, { .compatible = "qcom,sc8180x-osm-l3", .data = &sc8180x_icc_osm_l3 }, diff --git a/drivers/interconnect/qcom/sc7280.h b/drivers/interconnect/qcom/sc7280.h index 175e400..5df7600 100644 --- a/drivers/interconnect/qcom/sc7280.h +++ b/drivers/interconnect/qcom/sc7280.h @@ -150,5 +150,15 @@ #define SC7280_SLAVE_PCIE_1 139 #define SC7280_SLAVE_QDSS_STM 140 #define SC7280_SLAVE_TCU 141 +#define SC7280_MASTER_EPSS_L3_APPS 142 +#define SC7280_SLAVE_EPSS_L3_SHARED 143 +#define SC7280_SLAVE_EPSS_L3_CPU0 144 +#define SC7280_SLAVE_EPSS_L3_CPU1 145 +#define SC7280_SLAVE_EPSS_L3_CPU2 146 +#define SC7280_SLAVE_EPSS_L3_CPU3 147 +#define SC7280_SLAVE_EPSS_L3_CPU4 148 +#define SC7280_SLAVE_EPSS_L3_CPU5 149 +#define SC7280_SLAVE_EPSS_L3_CPU6 150 +#define SC7280_SLAVE_EPSS_L3_CPU7 151 #endif