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[80.251.214.228]) by smtp.gmail.com with ESMTPSA id f8sm8445582pfv.135.2021.11.22.00.51.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Nov 2021 00:51:41 -0800 (PST) From: Shawn Guo To: Georgi Djakov Cc: Bjorn Andersson , Rob Herring , Loic Poulain , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Shawn Guo Subject: [PATCH v2 3/6] interconnect: icc-rpm: Add QNOC type QoS support Date: Mon, 22 Nov 2021 16:51:20 +0800 Message-Id: <20211122085123.21049-4-shawn.guo@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211122085123.21049-1-shawn.guo@linaro.org> References: <20211122085123.21049-1-shawn.guo@linaro.org> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org It adds QoS support for QNOC type device which can be found on QCM2290 platform. The downstream driver[1] includes support for priority, limiter, regulator and forwarding setup. As QCM2290 support only requires priority and forwarding configuration, limiter and regulator support are omitted for this initial submission. [1] https://source.codeaurora.org/quic/la/kernel/msm-4.19/tree/drivers/soc/qcom/msm_bus/msm_bus_qnoc_adhoc.c?h=kernel.lnx.4.19.r22-rel Signed-off-by: Shawn Guo --- drivers/interconnect/qcom/icc-rpm.c | 38 ++++++++++++++++++++++++++--- drivers/interconnect/qcom/icc-rpm.h | 3 +++ 2 files changed, 38 insertions(+), 3 deletions(-) diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c index 264a9399fb28..22a98c0b29af 100644 --- a/drivers/interconnect/qcom/icc-rpm.c +++ b/drivers/interconnect/qcom/icc-rpm.c @@ -17,6 +17,13 @@ #include "smd-rpm.h" #include "icc-rpm.h" +/* QNOC QoS */ +#define QNOC_QOS_MCTL_LOWn_ADDR(n) (0x8 + (n * 0x1000)) +#define QNOC_QOS_MCTL_DFLT_PRIO_MASK 0x70 +#define QNOC_QOS_MCTL_DFLT_PRIO_SHIFT 4 +#define QNOC_QOS_MCTL_URGFWD_EN_MASK 0x8 +#define QNOC_QOS_MCTL_URGFWD_EN_SHIFT 3 + /* BIMC QoS */ #define M_BKE_REG_BASE(n) (0x300 + (0x4000 * n)) #define M_BKE_EN_ADDR(n) (M_BKE_REG_BASE(n)) @@ -39,6 +46,27 @@ #define NOC_QOS_MODEn_ADDR(n) (0xc + (n * 0x1000)) #define NOC_QOS_MODEn_MASK 0x3 +static int qcom_icc_set_qnoc_qos(struct icc_node *src, u64 max_bw) +{ + struct icc_provider *provider = src->provider; + struct qcom_icc_provider *qp = to_qcom_provider(provider); + struct qcom_icc_node *qn = src->data; + struct qcom_icc_qos *qos = &qn->qos; + int rc; + + rc = regmap_update_bits(qp->regmap, + qp->qos_offset + QNOC_QOS_MCTL_LOWn_ADDR(qos->qos_port), + QNOC_QOS_MCTL_DFLT_PRIO_MASK, + qos->areq_prio << QNOC_QOS_MCTL_DFLT_PRIO_SHIFT); + if (rc) + return rc; + + return regmap_update_bits(qp->regmap, + qp->qos_offset + QNOC_QOS_MCTL_LOWn_ADDR(qos->qos_port), + QNOC_QOS_MCTL_URGFWD_EN_MASK, + !!qos->urg_fwd_en << QNOC_QOS_MCTL_URGFWD_EN_SHIFT); +} + static int qcom_icc_bimc_set_qos_health(struct qcom_icc_provider *qp, struct qcom_icc_qos *qos, int regnum) @@ -163,10 +191,14 @@ static int qcom_icc_qos_set(struct icc_node *node, u64 sum_bw) dev_dbg(node->provider->dev, "Setting QoS for %s\n", qn->name); - if (qp->type == QCOM_ICC_BIMC) + switch (qp->type) { + case QCOM_ICC_BIMC: return qcom_icc_set_bimc_qos(node, sum_bw); - - return qcom_icc_set_noc_qos(node, sum_bw); + case QCOM_ICC_QNOC: + return qcom_icc_set_qnoc_qos(node, sum_bw); + default: + return qcom_icc_set_noc_qos(node, sum_bw); + } } static int qcom_icc_rpm_set(int mas_rpm_id, int slv_rpm_id, u64 sum_bw) diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h index d8e77ce7fe06..66ce908a6e65 100644 --- a/drivers/interconnect/qcom/icc-rpm.h +++ b/drivers/interconnect/qcom/icc-rpm.h @@ -15,6 +15,7 @@ enum qcom_icc_type { QCOM_ICC_NOC, QCOM_ICC_BIMC, + QCOM_ICC_QNOC, }; /** @@ -43,6 +44,7 @@ struct qcom_icc_provider { * @ap_owned: indicates if the node is owned by the AP or by the RPM * @qos_mode: default qos mode for this node * @qos_port: qos port number for finding qos registers of this node + * @urg_fwd_en: enable urgent forwarding */ struct qcom_icc_qos { u32 areq_prio; @@ -51,6 +53,7 @@ struct qcom_icc_qos { bool ap_owned; int qos_mode; int qos_port; + bool urg_fwd_en; }; /** -- 2.17.1