From: Shawn Guo <shawn.guo@linaro.org>
To: Georgi Djakov <djakov@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
Loic Poulain <loic.poulain@linaro.org>,
linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org, Shawn Guo <shawn.guo@linaro.org>
Subject: [PATCH v4 2/5] interconnect: icc-rpm: Add QNOC type QoS support
Date: Wed, 15 Dec 2021 08:23:21 +0800 [thread overview]
Message-ID: <20211215002324.1727-3-shawn.guo@linaro.org> (raw)
In-Reply-To: <20211215002324.1727-1-shawn.guo@linaro.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 <shawn.guo@linaro.org>
---
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 429c377231e6..d8ea9bb479b1 100644
--- a/drivers/interconnect/qcom/icc-rpm.c
+++ b/drivers/interconnect/qcom/icc-rpm.c
@@ -18,6 +18,13 @@
#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))
@@ -40,6 +47,27 @@
#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)
@@ -164,10 +192,14 @@ 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 2268777348cb..26dad006034f 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
next prev parent reply other threads:[~2021-12-15 0:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-15 0:23 [PATCH v4 0/5] Add QCM2290 interconnect support Shawn Guo
2021-12-15 0:23 ` [PATCH v4 1/5] interconnect: icc-rpm: Define ICC device type Shawn Guo
2021-12-15 0:23 ` Shawn Guo [this message]
2021-12-15 0:23 ` [PATCH v4 3/5] interconnect: icc-rpm: Support child NoC device probe Shawn Guo
2021-12-15 0:23 ` [PATCH v4 4/5] dt-bindings: interconnect: Add Qualcomm QCM2290 NoC support Shawn Guo
2021-12-15 0:23 ` [PATCH v4 5/5] interconnect: qcom: Add QCM2290 driver support Shawn Guo
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