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Date: Wed, 10 Jan 2024 19:40:19 +0800
From: Luo Jie <quic_luoj@...cinc.com>
To: <agross@...nel.org>, <andersson@...nel.org>, <konrad.dybcio@...aro.org>,
<davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
<pabeni@...hat.com>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<corbet@....net>, <catalin.marinas@....com>, <will@...nel.org>,
<p.zabel@...gutronix.de>, <linux@...linux.org.uk>,
<shannon.nelson@....com>, <anthony.l.nguyen@...el.com>,
<jasowang@...hat.com>, <brett.creeley@....com>,
<rrameshbabu@...dia.com>, <joshua.a.hay@...el.com>, <arnd@...db.de>,
<geert+renesas@...der.be>, <neil.armstrong@...aro.org>,
<dmitry.baryshkov@...aro.org>, <nfraprado@...labora.com>,
<m.szyprowski@...sung.com>, <u-kumar1@...com>,
<jacob.e.keller@...el.com>, <andrew@...n.ch>
CC: <netdev@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-doc@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
<ryazanov.s.a@...il.com>, <ansuelsmth@...il.com>,
<quic_kkumarcs@...cinc.com>, <quic_suruchia@...cinc.com>,
<quic_soni@...cinc.com>, <quic_pavir@...cinc.com>,
<quic_souravp@...cinc.com>, <quic_linchen@...cinc.com>,
<quic_leiwei@...cinc.com>
Subject: [PATCH net-next 07/20] net: ethernet: qualcomm: Add PPE port scheduler resource
PPE port scheduler resource is used to dispatch the packet with
QoS offloaded to PPE hardware, which includes the hardware queue,
DRR(deficit round robin) and SP(strict priority).
Signed-off-by: Luo Jie <quic_luoj@...cinc.com>
---
drivers/net/ethernet/qualcomm/ppe/ppe.c | 83 ++++++++++++++++++++++++-
drivers/net/ethernet/qualcomm/ppe/ppe.h | 13 ++++
2 files changed, 95 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/qualcomm/ppe/ppe.c b/drivers/net/ethernet/qualcomm/ppe/ppe.c
index 85d8b06a326b..8bf32a7265d2 100644
--- a/drivers/net/ethernet/qualcomm/ppe/ppe.c
+++ b/drivers/net/ethernet/qualcomm/ppe/ppe.c
@@ -16,6 +16,7 @@
#include "ppe.h"
#include "ppe_regs.h"
+#define PPE_SCHEDULER_PORT_NUM 8
static const char * const ppe_clock_name[PPE_CLK_MAX] = {
"cmn_ahb",
"cmn_sys",
@@ -112,6 +113,8 @@ static const char * const ppe_reset_name[PPE_RST_MAX] = {
"nss_port6_mac",
};
+static struct ppe_scheduler_port_resource ppe_scheduler_res[PPE_SCHEDULER_PORT_NUM];
+
int ppe_write(struct ppe_device *ppe_dev, u32 reg, unsigned int val)
{
return regmap_write(ppe_dev->regmap, reg, val);
@@ -730,6 +733,80 @@ static int of_parse_ppe_tdm(struct ppe_device *ppe_dev,
return ret;
};
+static int of_parse_ppe_scheduler_resource(struct ppe_device *ppe_dev,
+ struct device_node *resource_node)
+{
+ struct device_node *port_node;
+ u32 port;
+
+ for_each_available_child_of_node(resource_node, port_node) {
+ if (of_property_read_u32(port_node, "port-id", &port))
+ return dev_err_probe(ppe_dev->dev, -ENODEV,
+ "port-id not defined on resource\n");
+
+ if (port >= ARRAY_SIZE(ppe_scheduler_res))
+ return dev_err_probe(ppe_dev->dev, -EINVAL,
+ "Invalid port-id defined on resource\n");
+
+ if (of_property_read_u32_array(port_node, "qcom,ucast-queue",
+ ppe_scheduler_res[port].ucastq,
+ ARRAY_SIZE(ppe_scheduler_res[port].ucastq)))
+ return dev_err_probe(ppe_dev->dev, -EINVAL,
+ "Invalid qcom,ucast-queue defined on resource\n");
+
+ if (of_property_read_u32_array(port_node, "qcom,mcast-queue",
+ ppe_scheduler_res[port].mcastq,
+ ARRAY_SIZE(ppe_scheduler_res[port].mcastq)))
+ return dev_err_probe(ppe_dev->dev, -EINVAL,
+ "Invalid qcom,mcast-queue defined on resource\n");
+
+ if (of_property_read_u32_array(port_node, "qcom,l0sp",
+ ppe_scheduler_res[port].l0sp,
+ ARRAY_SIZE(ppe_scheduler_res[port].l0sp)))
+ return dev_err_probe(ppe_dev->dev, -EINVAL,
+ "Invalid qcom,l0sp defined on resource\n");
+
+ if (of_property_read_u32_array(port_node, "qcom,l0cdrr",
+ ppe_scheduler_res[port].l0cdrr,
+ ARRAY_SIZE(ppe_scheduler_res[port].l0cdrr)))
+ return dev_err_probe(ppe_dev->dev, -EINVAL,
+ "Invalid qcom,l0cdrr defined on resource\n");
+
+ if (of_property_read_u32_array(port_node, "qcom,l0edrr",
+ ppe_scheduler_res[port].l0edrr,
+ ARRAY_SIZE(ppe_scheduler_res[port].l0edrr)))
+ return dev_err_probe(ppe_dev->dev, -EINVAL,
+ "Invalid qcom,l0edrr defined on resource\n");
+
+ if (of_property_read_u32_array(port_node, "qcom,l1cdrr",
+ ppe_scheduler_res[port].l1cdrr,
+ ARRAY_SIZE(ppe_scheduler_res[port].l1cdrr)))
+ return dev_err_probe(ppe_dev->dev, -EINVAL,
+ "Invalid qcom,l1cdrr defined on resource\n");
+
+ if (of_property_read_u32_array(port_node, "qcom,l1edrr",
+ ppe_scheduler_res[port].l1edrr,
+ ARRAY_SIZE(ppe_scheduler_res[port].l1edrr)))
+ return dev_err_probe(ppe_dev->dev, -EINVAL,
+ "Invalid qcom,l1edrr defined on resource\n");
+ }
+
+ return 0;
+}
+
+static int of_parse_ppe_scheduler(struct ppe_device *ppe_dev,
+ struct device_node *ppe_node)
+{
+ struct device_node *scheduler_node;
+
+ scheduler_node = of_get_child_by_name(ppe_node, "port-scheduler-resource");
+ if (!scheduler_node)
+ return dev_err_probe(ppe_dev->dev, -ENODEV,
+ "port-scheduler-resource is not defined\n");
+
+ return of_parse_ppe_scheduler_resource(ppe_dev, scheduler_node);
+}
+
static int of_parse_ppe_config(struct ppe_device *ppe_dev,
struct device_node *ppe_node)
{
@@ -743,7 +820,11 @@ static int of_parse_ppe_config(struct ppe_device *ppe_dev,
if (ret)
return ret;
- return of_parse_ppe_tdm(ppe_dev, ppe_node);
+ ret = of_parse_ppe_tdm(ppe_dev, ppe_node);
+ if (ret)
+ return ret;
+
+ return of_parse_ppe_scheduler(ppe_dev, ppe_node);
}
static int qcom_ppe_probe(struct platform_device *pdev)
diff --git a/drivers/net/ethernet/qualcomm/ppe/ppe.h b/drivers/net/ethernet/qualcomm/ppe/ppe.h
index 6caef42ab235..84b1c9761f79 100644
--- a/drivers/net/ethernet/qualcomm/ppe/ppe.h
+++ b/drivers/net/ethernet/qualcomm/ppe/ppe.h
@@ -139,6 +139,19 @@ struct ppe_data {
struct reset_control *rst[PPE_RST_MAX];
};
+/* PPE port QoS resource, which includes the queue range and
+ * DRR(deficit round robin), SP(strict priority).
+ */
+struct ppe_scheduler_port_resource {
+ int ucastq[2];
+ int mcastq[2];
+ int l0sp[2];
+ int l0cdrr[2];
+ int l0edrr[2];
+ int l1cdrr[2];
+ int l1edrr[2];
+};
+
int ppe_type_get(struct ppe_device *ppe_dev);
int ppe_write(struct ppe_device *ppe_dev, u32 reg, unsigned int val);
--
2.42.0
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