From patchwork Fri Feb 8 17:21:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 10803431 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AB6C81575 for ; Fri, 8 Feb 2019 17:22:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9D6232EB9F for ; Fri, 8 Feb 2019 17:22:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9AE712EB9E; Fri, 8 Feb 2019 17:22:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 269222EBA6 for ; Fri, 8 Feb 2019 17:22:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727813AbfBHRWA (ORCPT ); Fri, 8 Feb 2019 12:22:00 -0500 Received: from mail-wm1-f67.google.com ([209.85.128.67]:54157 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727773AbfBHRV7 (ORCPT ); Fri, 8 Feb 2019 12:21:59 -0500 Received: by mail-wm1-f67.google.com with SMTP id d15so4269961wmb.3 for ; Fri, 08 Feb 2019 09:21:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=51b5idztAmsBLdKrAGRyeDKLK40XaiNredOFEPB/oqc=; b=xi0qgQmkanzf5BVr+xvxJi2kcVeiXtOfM9/vbQzwle5ocH36VmOTP4v43q+2unVzH9 iqIkAgrwG2Cvx6JSqw3zVH0QQgpjqZEDpSTGEJPf+ImxTrMO+t8UMzLy7864zKm/7U83 ql4rY1U3QoYrOBLH5nLHUuF0FB8KL5jx/NYgDZ8xCKjw6s0A3zVuFBXAGaCTGVHK+R8b p/gFNDtqmlcvGgJ2/Vh5+jOuw8kQ4kHScTXlXpfmV1cpBc97IW9FW0ZynmEKq3MUB0XP wO5079nKJ8ogoU9ZolG3wndPJJiPfRZmBG2YpLmPdaNjLVgi8WoQDQQdqPBgvfASYCHq 7B/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=51b5idztAmsBLdKrAGRyeDKLK40XaiNredOFEPB/oqc=; b=LLR+XtMMUKL3mFsEnUjT3lm0/YyVQS2qIn/yIQ44OTbryNmKz5W5W2dzU7dxiDfMMb cDWhd7Ah/zq3mRhsbueIBNk5pPpYfIu4dCdmc4HMYYrc9M0uApFL45LB7qVZadEPDfhR aMkNOfH2eeBEh5yb97eiUX5hlzW9Q/R+idGtnbK0ENgg9vyXgjK/RtP2ZCrrqPlZ3EPY krjzRfed/9k3CE1BYjbLSvOZhKSy4CwRe7lTpHTH+UhtmECOmngGNQ2P+OPpvPBK7iH4 s9wyuavaE5MOs8VNufDLcfR//Hv0dHdYsPsxKVOHosqHNBaXONxDjmpyHK6cUSkkKyWB T8sg== X-Gm-Message-State: AHQUAub4YdjjEi1wcrhKEIqHe/O00CB3hGI0192+Xa/Q5Caqf/Akhvk5 IOPSCgwpKQs4a3EStl08rrH2Vg== X-Google-Smtp-Source: AHgI3IbyOZw/W+qbcepe3mkBtyyejFrchJVn4GP84ftIEqG3DFmG8it3jLWLTRCLVlslDB5ciOL4ig== X-Received: by 2002:adf:fe43:: with SMTP id m3mr16904061wrs.290.1549646516529; Fri, 08 Feb 2019 09:21:56 -0800 (PST) Received: from localhost.localdomain ([212.45.67.2]) by smtp.googlemail.com with ESMTPSA id k23sm4097150wmj.32.2019.02.08.09.21.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 08 Feb 2019 09:21:55 -0800 (PST) From: Georgi Djakov To: linux-pm@vger.kernel.org Cc: daidavid1@codeaurora.org, vincent.guittot@linaro.org, bjorn.andersson@linaro.org, amit.kucheria@linaro.org, evgreen@chromium.org, dianders@chromium.org, seansw@qti.qualcomm.com, mturquette@baylibre.com, abailon@baylibre.com, thierry.reding@gmail.com, ksitaraman@nvidia.com, sanjayc@nvidia.com, henryc.chen@mediatek.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, georgi.djakov@linaro.org Subject: [PATCH v1 1/2] interconnect: Add support for path tags Date: Fri, 8 Feb 2019 19:21:51 +0200 Message-Id: <20190208172152.1807-2-georgi.djakov@linaro.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20190208172152.1807-1-georgi.djakov@linaro.org> References: <20190208172152.1807-1-georgi.djakov@linaro.org> 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 X-Virus-Scanned: ClamAV using ClamSMTP Consumers may have use cases with different bandwidth requirements based on the system or driver state. The consumer driver can append a specific tag to the path and pass this information to the interconnect platform driver to do the aggregation based on this state. Introduce icc_set_tag() function that will allow the consumers to append an optional tag to each path. The aggregation of these tagged paths is platform specific. Signed-off-by: Georgi Djakov --- drivers/interconnect/core.c | 27 +++++++++++++++++++++++---- drivers/interconnect/qcom/sdm845.c | 2 +- include/linux/interconnect-provider.h | 4 ++-- include/linux/interconnect.h | 5 +++++ 4 files changed, 31 insertions(+), 7 deletions(-) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 6005a1c189f6..31eacd0f5349 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -42,10 +42,12 @@ struct icc_req { /** * struct icc_path - interconnect path structure + * @tag: path tag (optional) * @num_nodes: number of hops (nodes) * @reqs: array of the requests applicable to this path of nodes */ struct icc_path { + u32 tag; size_t num_nodes; struct icc_req reqs[]; }; @@ -206,7 +208,7 @@ static struct icc_path *path_find(struct device *dev, struct icc_node *src, * implementing its own aggregate() function. */ -static int aggregate_requests(struct icc_node *node) +static int aggregate_requests(struct icc_node *node, u32 tag) { struct icc_provider *p = node->provider; struct icc_req *r; @@ -215,7 +217,7 @@ static int aggregate_requests(struct icc_node *node) node->peak_bw = 0; hlist_for_each_entry(r, &node->req_list, req_node) - p->aggregate(node, r->avg_bw, r->peak_bw, + p->aggregate(node, tag, r->avg_bw, r->peak_bw, &node->avg_bw, &node->peak_bw); return 0; @@ -396,6 +398,23 @@ struct icc_path *of_icc_get(struct device *dev, const char *name) } EXPORT_SYMBOL_GPL(of_icc_get); +/** + * icc_set_tag() - set an optional tag on a path + * @path: the path we want to tag + * @tag: the tag value + * + * This function allows consumers to append a tag to the path, so that a + * different aggregation could be done based on this tag. + */ +void icc_set_tag(struct icc_path *path, u32 tag) +{ + if (!path) + return; + + path->tag = tag; +} +EXPORT_SYMBOL_GPL(icc_set_tag); + /** * icc_set_bw() - set bandwidth constraints on an interconnect path * @path: reference to the path returned by icc_get() @@ -434,7 +453,7 @@ int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) path->reqs[i].peak_bw = peak_bw; /* aggregate requests for this node */ - aggregate_requests(node); + aggregate_requests(node, path->tag); } ret = apply_constraints(path); @@ -446,7 +465,7 @@ int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) node = path->reqs[i].node; path->reqs[i].avg_bw = old_avg; path->reqs[i].peak_bw = old_peak; - aggregate_requests(node); + aggregate_requests(node, path->tag); } apply_constraints(path); } diff --git a/drivers/interconnect/qcom/sdm845.c b/drivers/interconnect/qcom/sdm845.c index 4915b78da673..fb526004c82e 100644 --- a/drivers/interconnect/qcom/sdm845.c +++ b/drivers/interconnect/qcom/sdm845.c @@ -626,7 +626,7 @@ static void bcm_aggregate(struct qcom_icc_bcm *bcm) bcm->dirty = false; } -static int qcom_icc_aggregate(struct icc_node *node, u32 avg_bw, +static int qcom_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, u32 peak_bw, u32 *agg_avg, u32 *agg_peak) { size_t i; diff --git a/include/linux/interconnect-provider.h b/include/linux/interconnect-provider.h index 63caccadc2db..4ee19fd41568 100644 --- a/include/linux/interconnect-provider.h +++ b/include/linux/interconnect-provider.h @@ -45,8 +45,8 @@ struct icc_provider { struct list_head provider_list; struct list_head nodes; int (*set)(struct icc_node *src, struct icc_node *dst); - int (*aggregate)(struct icc_node *node, u32 avg_bw, u32 peak_bw, - u32 *agg_avg, u32 *agg_peak); + int (*aggregate)(struct icc_node *node, u32 tag, u32 avg_bw, + u32 peak_bw, u32 *agg_avg, u32 *agg_peak); struct icc_node* (*xlate)(struct of_phandle_args *spec, void *data); struct device *dev; int users; diff --git a/include/linux/interconnect.h b/include/linux/interconnect.h index dc25864755ba..d70a914cba11 100644 --- a/include/linux/interconnect.h +++ b/include/linux/interconnect.h @@ -30,6 +30,7 @@ struct icc_path *icc_get(struct device *dev, const int src_id, struct icc_path *of_icc_get(struct device *dev, const char *name); void icc_put(struct icc_path *path); int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); +void icc_set_tag(struct icc_path *path, u32 tag); #else @@ -54,6 +55,10 @@ static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) return 0; } +static inline void icc_set_tag(struct icc_path *path, u32 tag) +{ +} + #endif /* CONFIG_INTERCONNECT */ #endif /* __LINUX_INTERCONNECT_H */ From patchwork Fri Feb 8 17:21:52 2019 Content-Type: text/plain; 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Fri, 08 Feb 2019 09:21:57 -0800 (PST) From: Georgi Djakov To: linux-pm@vger.kernel.org Cc: daidavid1@codeaurora.org, vincent.guittot@linaro.org, bjorn.andersson@linaro.org, amit.kucheria@linaro.org, evgreen@chromium.org, dianders@chromium.org, seansw@qti.qualcomm.com, mturquette@baylibre.com, abailon@baylibre.com, thierry.reding@gmail.com, ksitaraman@nvidia.com, sanjayc@nvidia.com, henryc.chen@mediatek.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, georgi.djakov@linaro.org Subject: [PATCH v1 2/2] interconnect: qcom: Add tagging and wake/sleep support for sdm845 Date: Fri, 8 Feb 2019 19:21:52 +0200 Message-Id: <20190208172152.1807-3-georgi.djakov@linaro.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20190208172152.1807-1-georgi.djakov@linaro.org> References: <20190208172152.1807-1-georgi.djakov@linaro.org> 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 X-Virus-Scanned: ClamAV using ClamSMTP From: David Dai Add support for wake and sleep commands by using a tag to indicate whether or not the aggregate and set requests are active only or dual context for a particular path. Signed-off-by: David Dai Signed-off-by: Georgi Djakov --- drivers/interconnect/qcom/sdm845.c | 101 +++++++++++++++++++++-------- 1 file changed, 75 insertions(+), 26 deletions(-) diff --git a/drivers/interconnect/qcom/sdm845.c b/drivers/interconnect/qcom/sdm845.c index fb526004c82e..13499f681160 100644 --- a/drivers/interconnect/qcom/sdm845.c +++ b/drivers/interconnect/qcom/sdm845.c @@ -65,6 +65,12 @@ struct bcm_db { #define SDM845_MAX_BCMS 30 #define SDM845_MAX_BCM_PER_NODE 2 #define SDM845_MAX_VCD 10 +#define SDM845_MAX_CTX 2 +#define SDM845_EE_STATE 2 +#define EE_STATE_WAKE 0 +#define EE_STATE_SLEEP 1 +#define AO_CTX 0 +#define DUAL_CTX 1 /** * struct qcom_icc_node - Qualcomm specific interconnect nodes @@ -86,8 +92,8 @@ struct qcom_icc_node { u16 num_links; u16 channels; u16 buswidth; - u64 sum_avg; - u64 max_peak; + u64 sum_avg[SDM845_MAX_CTX]; + u64 max_peak[SDM845_MAX_CTX]; struct qcom_icc_bcm *bcms[SDM845_MAX_BCM_PER_NODE]; size_t num_bcms; }; @@ -112,8 +118,8 @@ struct qcom_icc_bcm { const char *name; u32 type; u32 addr; - u64 vote_x; - u64 vote_y; + u64 vote_x[SDM845_EE_STATE]; + u64 vote_y[SDM845_EE_STATE]; bool dirty; bool keepalive; struct bcm_db aux_data; @@ -555,7 +561,7 @@ inline void tcs_cmd_gen(struct tcs_cmd *cmd, u64 vote_x, u64 vote_y, cmd->wait = true; } -static void tcs_list_gen(struct list_head *bcm_list, +static void tcs_list_gen(struct list_head *bcm_list, int ee_state, struct tcs_cmd tcs_list[SDM845_MAX_VCD], int n[SDM845_MAX_VCD]) { @@ -573,8 +579,8 @@ static void tcs_list_gen(struct list_head *bcm_list, commit = true; cur_vcd_size = 0; } - tcs_cmd_gen(&tcs_list[idx], bcm->vote_x, bcm->vote_y, - bcm->addr, commit); + tcs_cmd_gen(&tcs_list[idx], bcm->vote_x[ee_state], + bcm->vote_y[ee_state], bcm->addr, commit); idx++; n[batch]++; /* @@ -595,32 +601,42 @@ static void tcs_list_gen(struct list_head *bcm_list, static void bcm_aggregate(struct qcom_icc_bcm *bcm) { - size_t i; - u64 agg_avg = 0; - u64 agg_peak = 0; + size_t i, ctx; + u64 agg_avg[SDM845_MAX_CTX] = {0}; + u64 agg_peak[SDM845_MAX_CTX] = {0}; u64 temp; - for (i = 0; i < bcm->num_nodes; i++) { - temp = bcm->nodes[i]->sum_avg * bcm->aux_data.width; - do_div(temp, bcm->nodes[i]->buswidth * bcm->nodes[i]->channels); - agg_avg = max(agg_avg, temp); + for (ctx = 0; ctx < SDM845_MAX_CTX; ctx++) { + for (i = 0; i < bcm->num_nodes; i++) { + temp = bcm->nodes[i]->sum_avg[ctx] * bcm->aux_data.width; + do_div(temp, bcm->nodes[i]->buswidth * bcm->nodes[i]->channels); + agg_avg[ctx] = max(agg_avg[ctx], temp); - temp = bcm->nodes[i]->max_peak * bcm->aux_data.width; - do_div(temp, bcm->nodes[i]->buswidth); - agg_peak = max(agg_peak, temp); + temp = bcm->nodes[i]->max_peak[ctx] * bcm->aux_data.width; + do_div(temp, bcm->nodes[i]->buswidth); + agg_peak[ctx] = max(agg_peak[ctx], temp); + } } - temp = agg_avg * 1000ULL; + temp = agg_avg[AO_CTX] + agg_avg[DUAL_CTX] * 1000ULL; + do_div(temp, bcm->aux_data.unit); + bcm->vote_x[EE_STATE_WAKE] = temp; + + temp = max(agg_peak[AO_CTX], agg_peak[DUAL_CTX]) * 1000ULL; + do_div(temp, bcm->aux_data.unit); + bcm->vote_y[EE_STATE_WAKE] = temp; + + temp = agg_avg[DUAL_CTX] * 1000ULL; do_div(temp, bcm->aux_data.unit); - bcm->vote_x = temp; + bcm->vote_x[EE_STATE_SLEEP] = temp; - temp = agg_peak * 1000ULL; + temp = agg_peak[DUAL_CTX] * 1000ULL; do_div(temp, bcm->aux_data.unit); - bcm->vote_y = temp; + bcm->vote_y[EE_STATE_SLEEP] = temp; if (bcm->keepalive && bcm->vote_x == 0 && bcm->vote_y == 0) { - bcm->vote_x = 1; - bcm->vote_y = 1; + bcm->vote_x[EE_STATE_WAKE] = 1; + bcm->vote_y[EE_STATE_WAKE] = 1; } bcm->dirty = false; @@ -631,14 +647,16 @@ static int qcom_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, { size_t i; struct qcom_icc_node *qn; + u32 ctx = 0; qn = node->data; + ctx = (!!tag) ? AO_CTX : DUAL_CTX; *agg_avg += avg_bw; *agg_peak = max_t(u32, *agg_peak, peak_bw); - qn->sum_avg = *agg_avg; - qn->max_peak = *agg_peak; + qn->sum_avg[ctx] = *agg_avg; + qn->max_peak[ctx] = *agg_peak; for (i = 0; i < qn->num_bcms; i++) qn->bcms[i]->dirty = true; @@ -675,7 +693,7 @@ static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) * Construct the command list based on a pre ordered list of BCMs * based on VCD. */ - tcs_list_gen(&commit_list, cmds, commit_idx); + tcs_list_gen(&commit_list, EE_STATE_WAKE, cmds, commit_idx); if (!commit_idx[0]) return ret; @@ -693,6 +711,37 @@ static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) return ret; } + INIT_LIST_HEAD(&commit_list); + + for (i = 0; i < qp->num_bcms; i++) { + /* Only generate WAKE and SLEEP commands if a resource's + * requirements change as the execution environment transitions + * between different power states. + */ + if (qp->bcms[i]->vote_x[EE_STATE_WAKE] != + qp->bcms[i]->vote_x[EE_STATE_SLEEP] || + qp->bcms[i]->vote_y[EE_STATE_WAKE] != + qp->bcms[i]->vote_y[EE_STATE_SLEEP]) { + list_add_tail(&qp->bcms[i]->list, &commit_list); + } + } + + tcs_list_gen(&commit_list, EE_STATE_WAKE, cmds, commit_idx); + + ret = rpmh_write_batch(qp->dev, RPMH_WAKE_ONLY_STATE, cmds, commit_idx); + if (ret) { + dev_err(qp->dev, "Error sending WAKE RPMH requests: %d\n", ret); + return ret; + } + + tcs_list_gen(&commit_list, EE_STATE_SLEEP, cmds, commit_idx); + + ret = rpmh_write_batch(qp->dev, RPMH_SLEEP_STATE, cmds, commit_idx); + if (ret) { + dev_err(qp->dev, "Error sending SLEEP RPMH requests: %d\n", ret); + return ret; + } + return ret; }