From patchwork Fri Jun 18 11:28:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Odelu Kukatla X-Patchwork-Id: 12331145 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=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 9DB91C48BE8 for ; Fri, 18 Jun 2021 11:29:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8674561351 for ; Fri, 18 Jun 2021 11:29:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230217AbhFRLbu (ORCPT ); Fri, 18 Jun 2021 07:31:50 -0400 Received: from so254-9.mailgun.net ([198.61.254.9]:14972 "EHLO so254-9.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233990AbhFRLbu (ORCPT ); Fri, 18 Jun 2021 07:31:50 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1624015781; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=B5lUNjOPqdTnD/AHUYxFUKQuhxcZYIeN15NySdsQFio=; b=Z2/X3RYTLdR9qf87GZuI3uxMmnwXMCXadExwfUI2u3pEafqt1mW0UQSfND9jZGxG/H7PFdkh jzGukC2+8Ju4zUa4wwy1tO8h/+cABD4OktU4zXPupoG/Q4T8joFtuGx2pl9hc+79OxpEZ+Mx /WnnZrh2EcIx2hUIxOr02al5bmI= X-Mailgun-Sending-Ip: 198.61.254.9 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-n04.prod.us-west-2.postgun.com with SMTP id 60cc8394ed59bf69cc54a6dd (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 18 Jun 2021 11:29:24 GMT Sender: okukatla=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id F0BF1C433F1; Fri, 18 Jun 2021 11:29:23 +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 082EEC4338A; Fri, 18 Jun 2021 11:29:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 082EEC4338A 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=okukatla@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, seansw@qti.qualcomm.com, elder@linaro.org, linux-arm-msm-owner@vger.kernel.org, Odelu Kukatla Subject: [V4 2/3] interconnect: qcom: Add EPSS L3 support on SC7280 Date: Fri, 18 Jun 2021 16:58:53 +0530 Message-Id: <1624015734-16778-3-git-send-email-okukatla@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1624015734-16778-1-git-send-email-okukatla@codeaurora.org> References: <1624015734-16778-1-git-send-email-okukatla@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@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 | 135 +++++++++++++++++++++++++++++-------- drivers/interconnect/qcom/sc7280.h | 10 +++ 2 files changed, 116 insertions(+), 29 deletions(-) diff --git a/drivers/interconnect/qcom/osm-l3.c b/drivers/interconnect/qcom/osm-l3.c index 695f287..a8c0ee8 100644 --- a/drivers/interconnect/qcom/osm-l3.c +++ b/drivers/interconnect/qcom/osm-l3.c @@ -15,6 +15,7 @@ #include #include "sc7180.h" +#include "sc7280.h" #include "sdm845.h" #include "sm8150.h" #include "sm8250.h" @@ -32,17 +33,33 @@ /* 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 L3_MAX_LINKS 9 #define to_qcom_provider(_provider) \ container_of(_provider, struct qcom_osm_l3_icc_provider, 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; @@ -55,34 +72,41 @@ struct qcom_osm_l3_icc_provider { * @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 */ struct qcom_icc_node { const char *name; - u16 links[OSM_L3_MAX_LINKS]; + u16 links[L3_MAX_LINKS]; u16 id; u16 num_links; u16 buswidth; + u16 domain; + int cpu; }; struct qcom_icc_desc { const struct qcom_icc_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, ...) \ - static const struct qcom_icc_node _name = { \ - .name = #_name, \ - .id = _id, \ - .buswidth = _buswidth, \ - .num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })), \ - .links = { __VA_ARGS__ }, \ +#define DEFINE_QNODE(_name, _id, _buswidth, _domain, _cpu, ...) \ + static const struct qcom_icc_node _name = { \ + .name = #_name, \ + .id = _id, \ + .buswidth = _buswidth, \ + .domain = _domain, \ + .cpu = _cpu, \ + .num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })), \ + .links = { __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); +DEFINE_QNODE(sdm845_osm_apps_l3, SDM845_MASTER_OSM_L3_APPS, 16, 0, 0, SDM845_SLAVE_OSM_L3); +DEFINE_QNODE(sdm845_osm_l3, SDM845_SLAVE_OSM_L3, 16, 0, 0); static const struct qcom_icc_node *sdm845_osm_l3_nodes[] = { [MASTER_OSM_L3_APPS] = &sdm845_osm_apps_l3, @@ -97,8 +121,8 @@ static const struct qcom_icc_desc sdm845_icc_osm_l3 = { .reg_perf_state = OSM_REG_PERF_STATE, }; -DEFINE_QNODE(sc7180_osm_apps_l3, SC7180_MASTER_OSM_L3_APPS, 16, SC7180_SLAVE_OSM_L3); -DEFINE_QNODE(sc7180_osm_l3, SC7180_SLAVE_OSM_L3, 16); +DEFINE_QNODE(sc7180_osm_apps_l3, SC7180_MASTER_OSM_L3_APPS, 16, 0, 0, SC7180_SLAVE_OSM_L3); +DEFINE_QNODE(sc7180_osm_l3, SC7180_SLAVE_OSM_L3, 16, 0, 0); static const struct qcom_icc_node *sc7180_osm_l3_nodes[] = { [MASTER_OSM_L3_APPS] = &sc7180_osm_apps_l3, @@ -113,8 +137,8 @@ static const struct qcom_icc_desc sc7180_icc_osm_l3 = { .reg_perf_state = OSM_REG_PERF_STATE, }; -DEFINE_QNODE(sm8150_osm_apps_l3, SM8150_MASTER_OSM_L3_APPS, 32, SM8150_SLAVE_OSM_L3); -DEFINE_QNODE(sm8150_osm_l3, SM8150_SLAVE_OSM_L3, 32); +DEFINE_QNODE(sm8150_osm_apps_l3, SM8150_MASTER_OSM_L3_APPS, 32, 0, 0, SM8150_SLAVE_OSM_L3); +DEFINE_QNODE(sm8150_osm_l3, SM8150_SLAVE_OSM_L3, 32, 0, 0); static const struct qcom_icc_node *sm8150_osm_l3_nodes[] = { [MASTER_OSM_L3_APPS] = &sm8150_osm_apps_l3, @@ -129,8 +153,8 @@ static const struct qcom_icc_desc sm8150_icc_osm_l3 = { .reg_perf_state = OSM_REG_PERF_STATE, }; -DEFINE_QNODE(sm8250_epss_apps_l3, SM8250_MASTER_EPSS_L3_APPS, 32, SM8250_SLAVE_EPSS_L3); -DEFINE_QNODE(sm8250_epss_l3, SM8250_SLAVE_EPSS_L3, 32); +DEFINE_QNODE(sm8250_epss_apps_l3, SM8250_MASTER_EPSS_L3_APPS, 32, 0, 0, SM8250_SLAVE_EPSS_L3); +DEFINE_QNODE(sm8250_epss_l3, SM8250_SLAVE_EPSS_L3, 32, 0, 0); static const struct qcom_icc_node *sm8250_epss_l3_nodes[] = { [MASTER_EPSS_L3_APPS] = &sm8250_epss_apps_l3, @@ -145,6 +169,39 @@ static const struct qcom_icc_desc sm8250_icc_epss_l3 = { .reg_perf_state = EPSS_REG_PERF_STATE, }; +DEFINE_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_QNODE(sc7280_epss_l3_shared, SC7280_SLAVE_EPSS_L3_SHARED, 32, 0, 0); +DEFINE_QNODE(sc7280_epss_l3_cpu0, SC7280_SLAVE_EPSS_L3_CPU0, 32, 1, 0); +DEFINE_QNODE(sc7280_epss_l3_cpu1, SC7280_SLAVE_EPSS_L3_CPU1, 32, 1, 1); +DEFINE_QNODE(sc7280_epss_l3_cpu2, SC7280_SLAVE_EPSS_L3_CPU2, 32, 1, 2); +DEFINE_QNODE(sc7280_epss_l3_cpu3, SC7280_SLAVE_EPSS_L3_CPU3, 32, 1, 3); +DEFINE_QNODE(sc7280_epss_l3_cpu4, SC7280_SLAVE_EPSS_L3_CPU4, 32, 2, 0); +DEFINE_QNODE(sc7280_epss_l3_cpu5, SC7280_SLAVE_EPSS_L3_CPU5, 32, 2, 1); +DEFINE_QNODE(sc7280_epss_l3_cpu6, SC7280_SLAVE_EPSS_L3_CPU6, 32, 2, 2); +DEFINE_QNODE(sc7280_epss_l3_cpu7, SC7280_SLAVE_EPSS_L3_CPU7, 32, 3, 0); + +static const struct qcom_icc_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_icc_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 int qcom_icc_set(struct icc_node *src, struct icc_node *dst) { struct qcom_osm_l3_icc_provider *qp; @@ -156,13 +213,18 @@ static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) u32 agg_avg = 0; u64 rate; - qn = src->data; + qn = dst->data; provider = src->provider; qp = to_qcom_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); + /* Skip aggregation when per core l3 scaling is enabled */ + if (qp->per_core_dcvs) { + agg_peak = dst->peak_bw; + } else { + 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 = icc_units_to_bps(rate); @@ -173,7 +235,10 @@ static int qcom_icc_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; } @@ -194,11 +259,12 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) const struct qcom_icc_desc *desc; struct icc_onecell_data *data; struct icc_provider *provider; + struct property *prop; const struct qcom_icc_node **qnodes; struct icc_node *node; size_t num_nodes; struct clk *clk; - int ret; + int ret, index, domain_count; clk = clk_get(&pdev->dev, "xo"); if (IS_ERR(clk)) @@ -218,12 +284,21 @@ 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); + prop = of_find_property(pdev->dev.of_node, "reg", NULL); + if (!prop) + return -EINVAL; + domain_count = prop->length / (4 * sizeof(prop->length)); + if (!domain_count) + return -EINVAL; + + for (index = 0; index < domain_count ; index++) { + qp->domain_base[index] = devm_platform_ioremap_resource(pdev, index); + if (IS_ERR(qp->domain_base[index])) + return PTR_ERR(qp->domain_base[index]); + } /* 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; } @@ -235,7 +310,7 @@ 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); @@ -254,6 +329,7 @@ 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; @@ -309,6 +385,7 @@ 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,sm8250-epss-l3", .data = &sm8250_icc_epss_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