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linux-7.2.3/drivers/net/dsa/ocelot/Kconfig

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+# SPDX-License-Identifier: GPL-2.0-only
+config NET_DSA_MSCC_FELIX_DSA_LIB
+	tristate
+	help
+	  This is an umbrella module for all network switches that are
+	  register-compatible with Ocelot and that perform I/O to their host
+	  CPU through an NPI (Node Processor Interface) Ethernet port.
+	  Its name comes from the first hardware chip to make use of it
+	  (VSC9959), code named Felix.
+
+config NET_DSA_MSCC_OCELOT_EXT
+	tristate "Ocelot External Ethernet switch support"
+	depends on NET_DSA && SPI
+	depends on NET_VENDOR_MICROSEMI
+	depends on PTP_1588_CLOCK_OPTIONAL
+	select MDIO_MSCC_MIIM
+	select MFD_OCELOT
+	select MSCC_OCELOT_SWITCH_LIB
+	select NET_DSA_MSCC_FELIX_DSA_LIB
+	select NET_DSA_TAG_OCELOT_8021Q
+	select NET_DSA_TAG_OCELOT
+	help
+	  This driver supports the VSC7511, VSC7512, VSC7513 and VSC7514 chips
+	  when controlled through SPI.
+
+	  The Ocelot switch family is a set of multi-port networking chips. All
+	  of these chips have the ability to be controlled externally through
+	  SPI or PCIe interfaces.
+
+	  Say "Y" here to enable external control to these chips.
+
+config NET_DSA_MSCC_FELIX
+	tristate "Ocelot / Felix Ethernet switch support"
+	depends on NET_DSA && PCI
+	depends on NET_VENDOR_MICROSEMI
+	depends on NET_VENDOR_FREESCALE
+	depends on HAS_IOMEM
+	depends on PTP_1588_CLOCK_OPTIONAL
+	depends on NET_SCH_TAPRIO || NET_SCH_TAPRIO=n
+	select MSCC_OCELOT_SWITCH_LIB
+	select NET_DSA_MSCC_FELIX_DSA_LIB
+	select NET_DSA_TAG_OCELOT_8021Q
+	select NET_DSA_TAG_OCELOT
+	select FSL_ENETC_MDIO
+	select PCS_LYNX
+	help
+	  This driver supports the VSC9959 (Felix) switch, which is embedded as
+	  a PCIe function of the NXP LS1028A ENETC RCiEP.
+
+config NET_DSA_MSCC_SEVILLE
+	tristate "Ocelot / Seville Ethernet switch support"
+	depends on NET_DSA
+	depends on NET_VENDOR_MICROSEMI
+	depends on HAS_IOMEM
+	depends on PTP_1588_CLOCK_OPTIONAL
+	select MDIO_MSCC_MIIM
+	select MSCC_OCELOT_SWITCH_LIB
+	select NET_DSA_MSCC_FELIX_DSA_LIB
+	select NET_DSA_TAG_OCELOT_8021Q
+	select NET_DSA_TAG_OCELOT
+	select PCS_LYNX
+	help
+	  This driver supports the VSC9953 (Seville) switch, which is embedded
+	  as a platform device on the NXP T1040 SoC.

linux-7.2.3/drivers/net/dsa/ocelot/Makefile

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_NET_DSA_MSCC_FELIX_DSA_LIB) += mscc_felix_dsa_lib.o
+obj-$(CONFIG_NET_DSA_MSCC_FELIX) += mscc_felix.o
+obj-$(CONFIG_NET_DSA_MSCC_OCELOT_EXT) += mscc_ocelot_ext.o
+obj-$(CONFIG_NET_DSA_MSCC_SEVILLE) += mscc_seville.o
+
+mscc_felix_dsa_lib-objs := felix.o
+mscc_felix-objs := felix_vsc9959.o
+mscc_ocelot_ext-objs := ocelot_ext.o
+mscc_seville-objs := seville_vsc9953.o

linux-7.2.3/drivers/net/dsa/ocelot/felix.h

@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright 2019 NXP
+ */
+#ifndef _MSCC_FELIX_H
+#define _MSCC_FELIX_H
+
+#define ocelot_to_felix(o)		container_of((o), struct felix, ocelot)
+#define FELIX_MAC_QUIRKS		OCELOT_QUIRK_PCS_PERFORMS_RATE_ADAPTATION
+
+#define OCELOT_PORT_MODE_NONE		0
+#define OCELOT_PORT_MODE_INTERNAL	BIT(0)
+#define OCELOT_PORT_MODE_SGMII		BIT(1)
+#define OCELOT_PORT_MODE_QSGMII		BIT(2)
+#define OCELOT_PORT_MODE_2500BASEX	BIT(3)
+#define OCELOT_PORT_MODE_USXGMII	BIT(4) /* compatibility */
+#define OCELOT_PORT_MODE_1000BASEX	BIT(5)
+#define OCELOT_PORT_MODE_10G_QXGMII	BIT(6)
+
+struct device_node;
+
+/* Platform-specific information */
+struct felix_info {
+	/* Hardcoded resources provided by the hardware instantiation. */
+	const struct resource		*resources;
+	size_t				num_resources;
+	/* Names of the mandatory resources that will be requested during
+	 * probe. Must have TARGET_MAX elements, since it is indexed by target.
+	 */
+	const char *const		*resource_names;
+	const struct reg_field		*regfields;
+	const u32 *const		*map;
+	const struct ocelot_ops		*ops;
+	const u32			*port_modes;
+	int				num_mact_rows;
+	int				num_ports;
+	struct vcap_props		*vcap;
+	u16				vcap_pol_base;
+	u16				vcap_pol_max;
+	u16				vcap_pol_base2;
+	u16				vcap_pol_max2;
+	const struct ptp_clock_info	*ptp_caps;
+	unsigned long			quirks;
+
+	/* Some Ocelot switches are integrated into the SoC without the
+	 * extraction IRQ line connected to the ARM GIC. By enabling this
+	 * workaround, the few packets that are delivered to the CPU port
+	 * module (currently only PTP) are copied not only to the hardware CPU
+	 * port module, but also to the 802.1Q Ethernet CPU port, and polling
+	 * the extraction registers is triggered once the DSA tagger sees a PTP
+	 * frame. The Ethernet frame is only used as a notification: it is
+	 * dropped, and the original frame is extracted over MMIO and annotated
+	 * with the RX timestamp.
+	 */
+	bool				quirk_no_xtr_irq;
+
+	int	(*mdio_bus_alloc)(struct ocelot *ocelot);
+	void	(*mdio_bus_free)(struct ocelot *ocelot);
+	int	(*port_setup_tc)(struct dsa_switch *ds, int port,
+				 enum tc_setup_type type, void *type_data);
+	void	(*port_sched_speed_set)(struct ocelot *ocelot, int port,
+					u32 speed);
+	void	(*phylink_mac_config)(struct ocelot *ocelot, int port,
+				      unsigned int mode,
+				      const struct phylink_link_state *state);
+	int	(*configure_serdes)(struct ocelot *ocelot, int port,
+				    struct device_node *portnp);
+	int	(*request_irq)(struct ocelot *ocelot);
+};
+
+/* Methods for initializing the hardware resources specific to a tagging
+ * protocol (like the NPI port, for "ocelot" or "seville", or the VCAP TCAMs,
+ * for "ocelot-8021q").
+ * It is important that the resources configured here do not have side effects
+ * for the other tagging protocols. If that is the case, their configuration
+ * needs to go to felix_tag_proto_setup_shared().
+ */
+struct felix_tag_proto_ops {
+	int (*setup)(struct dsa_switch *ds);
+	void (*teardown)(struct dsa_switch *ds);
+	unsigned long (*get_host_fwd_mask)(struct dsa_switch *ds);
+	int (*change_conduit)(struct dsa_switch *ds, int port,
+			      struct net_device *conduit,
+			      struct netlink_ext_ack *extack);
+};
+
+/* DSA glue / front-end for struct ocelot */
+struct felix {
+	struct dsa_switch		*ds;
+	const struct felix_info		*info;
+	struct ocelot			ocelot;
+	struct mii_bus			*imdio;
+	struct phylink_pcs		**pcs;
+	resource_size_t			switch_base;
+	enum dsa_tag_protocol		tag_proto;
+	const struct felix_tag_proto_ops *tag_proto_ops;
+	struct kthread_worker		*xmit_worker;
+	unsigned long			host_flood_uc_mask;
+	unsigned long			host_flood_mc_mask;
+};
+
+int felix_register_switch(struct device *dev, resource_size_t switch_base,
+			  int num_flooding_pgids, bool ptp,
+			  bool mm_supported,
+			  enum dsa_tag_protocol init_tag_proto,
+			  const struct felix_info *info);
+struct net_device *felix_port_to_netdev(struct ocelot *ocelot, int port);
+int felix_netdev_to_port(struct ocelot *ocelot, struct net_device *dev);
+
+#endif

linux-7.2.3/drivers/net/dsa/ocelot/ocelot_ext.c

@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright 2021-2022 Innovative Advantage Inc.
+ */
+
+#include <linux/mfd/ocelot.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <soc/mscc/ocelot.h>
+#include <soc/mscc/vsc7514_regs.h>
+#include "felix.h"
+
+#define VSC7514_NUM_PORTS		11
+
+#define OCELOT_PORT_MODE_SERDES		(OCELOT_PORT_MODE_SGMII | \
+					 OCELOT_PORT_MODE_QSGMII)
+
+static const u32 vsc7512_port_modes[VSC7514_NUM_PORTS] = {
+	OCELOT_PORT_MODE_INTERNAL,
+	OCELOT_PORT_MODE_INTERNAL,
+	OCELOT_PORT_MODE_INTERNAL,
+	OCELOT_PORT_MODE_INTERNAL,
+	OCELOT_PORT_MODE_SERDES,
+	OCELOT_PORT_MODE_SERDES,
+	OCELOT_PORT_MODE_SERDES,
+	OCELOT_PORT_MODE_SERDES,
+	OCELOT_PORT_MODE_SERDES,
+	OCELOT_PORT_MODE_SGMII,
+	OCELOT_PORT_MODE_SERDES,
+};
+
+static const struct ocelot_ops ocelot_ext_ops = {
+	.reset		= ocelot_reset,
+	.wm_enc		= ocelot_wm_enc,
+	.wm_dec		= ocelot_wm_dec,
+	.wm_stat	= ocelot_wm_stat,
+	.port_to_netdev	= felix_port_to_netdev,
+	.netdev_to_port	= felix_netdev_to_port,
+};
+
+static const char * const vsc7512_resource_names[TARGET_MAX] = {
+	[SYS] = "sys",
+	[REW] = "rew",
+	[S0] = "s0",
+	[S1] = "s1",
+	[S2] = "s2",
+	[QS] = "qs",
+	[QSYS] = "qsys",
+	[ANA] = "ana",
+};
+
+static const struct felix_info vsc7512_info = {
+	.resource_names			= vsc7512_resource_names,
+	.regfields			= vsc7514_regfields,
+	.map				= vsc7514_regmap,
+	.ops				= &ocelot_ext_ops,
+	.vcap				= vsc7514_vcap_props,
+	.num_mact_rows			= 1024,
+	.num_ports			= VSC7514_NUM_PORTS,
+	.port_modes			= vsc7512_port_modes,
+	.phylink_mac_config		= ocelot_phylink_mac_config,
+	.configure_serdes		= ocelot_port_configure_serdes,
+};
+
+static int ocelot_ext_probe(struct platform_device *pdev)
+{
+	return felix_register_switch(&pdev->dev, 0, 1, false, false,
+				     DSA_TAG_PROTO_OCELOT, &vsc7512_info);
+}
+
+static void ocelot_ext_remove(struct platform_device *pdev)
+{
+	struct felix *felix = dev_get_drvdata(&pdev->dev);
+
+	if (!felix)
+		return;
+
+	dsa_unregister_switch(felix->ds);
+}
+
+static void ocelot_ext_shutdown(struct platform_device *pdev)
+{
+	struct felix *felix = dev_get_drvdata(&pdev->dev);
+
+	if (!felix)
+		return;
+
+	dsa_switch_shutdown(felix->ds);
+
+	dev_set_drvdata(&pdev->dev, NULL);
+}
+
+static const struct of_device_id ocelot_ext_switch_of_match[] = {
+	{ .compatible = "mscc,vsc7512-switch" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, ocelot_ext_switch_of_match);
+
+static struct platform_driver ocelot_ext_switch_driver = {
+	.driver = {
+		.name = "ocelot-ext-switch",
+		.of_match_table = ocelot_ext_switch_of_match,
+	},
+	.probe = ocelot_ext_probe,
+	.remove = ocelot_ext_remove,
+	.shutdown = ocelot_ext_shutdown,
+};
+module_platform_driver(ocelot_ext_switch_driver);
+
+MODULE_DESCRIPTION("External Ocelot Switch driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("MFD_OCELOT");