Commit 6b93fb46 authored by John Crispin's avatar John Crispin Committed by David S. Miller
Browse files

net-next: dsa: add new driver for qca8xxx family 



This patch contains initial support for the QCA8337 switch. It
will detect a QCA8337 switch, if present and declared in the DT.

Each port will be represented through a standalone net_device interface,
as for other DSA switches. CPU can communicate with any of the ports by
setting an IP@ on ethN interface. Most of the extra callbacks of the DSA
subsystem are already supported, such as bridge offloading, stp, fdb.

Signed-off-by: default avatarJohn Crispin <john@phrozen.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cafdc45c

drivers/net/dsa/Kconfig

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@@ -25,4 +25,13 @@ source "drivers/net/dsa/b53/Kconfig" 


source "drivers/net/dsa/mv88e6xxx/Kconfig"



config NET_DSA_QCA8K

	tristate "Qualcomm Atheros QCA8K Ethernet switch family support"

	depends on NET_DSA

	select NET_DSA_TAG_QCA

	select REGMAP

	---help---

	  This enables support for the Qualcomm Atheros QCA8K Ethernet

	  switch chips.



endmenu

drivers/net/dsa/Makefile

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obj-$(CONFIG_NET_DSA_MV88E6060) += mv88e6060.o

obj-$(CONFIG_NET_DSA_BCM_SF2)	+= bcm_sf2.o

obj-$(CONFIG_NET_DSA_QCA8K)	+= qca8k.o



obj-y				+= b53/

obj-y				+= mv88e6xxx/

drivers/net/dsa/qca8k.c

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+1060 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/net/dsa/qca8k.h

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/*

 * Copyright (C) 2009 Felix Fietkau <nbd@nbd.name>

 * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>

 * Copyright (c) 2015, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */



#ifndef __QCA8K_H

#define __QCA8K_H



#include <linux/delay.h>

#include <linux/regmap.h>



#define QCA8K_NUM_PORTS					7



#define PHY_ID_QCA8337					0x004dd036

#define QCA8K_ID_QCA8337				0x13



#define QCA8K_NUM_FDB_RECORDS				2048



#define QCA8K_CPU_PORT					0



/* Global control registers */

#define QCA8K_REG_MASK_CTRL				0x000

#define   QCA8K_MASK_CTRL_ID_M				0xff

#define   QCA8K_MASK_CTRL_ID_S				8

#define QCA8K_REG_PORT0_PAD_CTRL			0x004

#define QCA8K_REG_PORT5_PAD_CTRL			0x008

#define QCA8K_REG_PORT6_PAD_CTRL			0x00c

#define   QCA8K_PORT_PAD_RGMII_EN			BIT(26)

#define   QCA8K_PORT_PAD_RGMII_TX_DELAY(x)		\

						((0x8 + (x & 0x3)) << 22)

#define   QCA8K_PORT_PAD_RGMII_RX_DELAY(x)		\

						((0x10 + (x & 0x3)) << 20)

#define   QCA8K_PORT_PAD_RGMII_RX_DELAY_EN		BIT(24)

#define   QCA8K_PORT_PAD_SGMII_EN			BIT(7)

#define QCA8K_REG_MODULE_EN				0x030

#define   QCA8K_MODULE_EN_MIB				BIT(0)

#define QCA8K_REG_MIB					0x034

#define   QCA8K_MIB_FLUSH				BIT(24)

#define   QCA8K_MIB_CPU_KEEP				BIT(20)

#define   QCA8K_MIB_BUSY				BIT(17)

#define QCA8K_GOL_MAC_ADDR0				0x60

#define QCA8K_GOL_MAC_ADDR1				0x64

#define QCA8K_REG_PORT_STATUS(_i)			(0x07c + (_i) * 4)

#define   QCA8K_PORT_STATUS_SPEED			GENMASK(2, 0)

#define   QCA8K_PORT_STATUS_SPEED_S			0

#define   QCA8K_PORT_STATUS_TXMAC			BIT(2)

#define   QCA8K_PORT_STATUS_RXMAC			BIT(3)

#define   QCA8K_PORT_STATUS_TXFLOW			BIT(4)

#define   QCA8K_PORT_STATUS_RXFLOW			BIT(5)

#define   QCA8K_PORT_STATUS_DUPLEX			BIT(6)

#define   QCA8K_PORT_STATUS_LINK_UP			BIT(8)

#define   QCA8K_PORT_STATUS_LINK_AUTO			BIT(9)

#define   QCA8K_PORT_STATUS_LINK_PAUSE			BIT(10)

#define QCA8K_REG_PORT_HDR_CTRL(_i)			(0x9c + (_i * 4))

#define   QCA8K_PORT_HDR_CTRL_RX_MASK			GENMASK(3, 2)

#define   QCA8K_PORT_HDR_CTRL_RX_S			2

#define   QCA8K_PORT_HDR_CTRL_TX_MASK			GENMASK(1, 0)

#define   QCA8K_PORT_HDR_CTRL_TX_S			0

#define   QCA8K_PORT_HDR_CTRL_ALL			2

#define   QCA8K_PORT_HDR_CTRL_MGMT			1

#define   QCA8K_PORT_HDR_CTRL_NONE			0



/* EEE control registers */

#define QCA8K_REG_EEE_CTRL				0x100

#define  QCA8K_REG_EEE_CTRL_LPI_EN(_i)			((_i + 1) * 2)



/* ACL registers */

#define QCA8K_REG_PORT_VLAN_CTRL0(_i)			(0x420 + (_i * 8))

#define   QCA8K_PORT_VLAN_CVID(x)			(x << 16)

#define   QCA8K_PORT_VLAN_SVID(x)			x

#define QCA8K_REG_PORT_VLAN_CTRL1(_i)			(0x424 + (_i * 8))

#define QCA8K_REG_IPV4_PRI_BASE_ADDR			0x470

#define QCA8K_REG_IPV4_PRI_ADDR_MASK			0x474



/* Lookup registers */

#define QCA8K_REG_ATU_DATA0				0x600

#define   QCA8K_ATU_ADDR2_S				24

#define   QCA8K_ATU_ADDR3_S				16

#define   QCA8K_ATU_ADDR4_S				8

#define QCA8K_REG_ATU_DATA1				0x604

#define   QCA8K_ATU_PORT_M				0x7f

#define   QCA8K_ATU_PORT_S				16

#define   QCA8K_ATU_ADDR0_S				8

#define QCA8K_REG_ATU_DATA2				0x608

#define   QCA8K_ATU_VID_M				0xfff

#define   QCA8K_ATU_VID_S				8

#define   QCA8K_ATU_STATUS_M				0xf

#define   QCA8K_ATU_STATUS_STATIC			0xf

#define QCA8K_REG_ATU_FUNC				0x60c

#define   QCA8K_ATU_FUNC_BUSY				BIT(31)

#define   QCA8K_ATU_FUNC_PORT_EN			BIT(14)

#define   QCA8K_ATU_FUNC_MULTI_EN			BIT(13)

#define   QCA8K_ATU_FUNC_FULL				BIT(12)

#define   QCA8K_ATU_FUNC_PORT_M				0xf

#define   QCA8K_ATU_FUNC_PORT_S				8

#define QCA8K_REG_GLOBAL_FW_CTRL0			0x620

#define   QCA8K_GLOBAL_FW_CTRL0_CPU_PORT_EN		BIT(10)

#define QCA8K_REG_GLOBAL_FW_CTRL1			0x624

#define   QCA8K_GLOBAL_FW_CTRL1_IGMP_DP_S		24

#define   QCA8K_GLOBAL_FW_CTRL1_BC_DP_S			16

#define   QCA8K_GLOBAL_FW_CTRL1_MC_DP_S			8

#define   QCA8K_GLOBAL_FW_CTRL1_UC_DP_S			0

#define QCA8K_PORT_LOOKUP_CTRL(_i)			(0x660 + (_i) * 0xc)

#define   QCA8K_PORT_LOOKUP_MEMBER			GENMASK(6, 0)

#define   QCA8K_PORT_LOOKUP_STATE_MASK			GENMASK(18, 16)

#define   QCA8K_PORT_LOOKUP_STATE_DISABLED		(0 << 16)

#define   QCA8K_PORT_LOOKUP_STATE_BLOCKING		(1 << 16)

#define   QCA8K_PORT_LOOKUP_STATE_LISTENING		(2 << 16)

#define   QCA8K_PORT_LOOKUP_STATE_LEARNING		(3 << 16)

#define   QCA8K_PORT_LOOKUP_STATE_FORWARD		(4 << 16)

#define   QCA8K_PORT_LOOKUP_STATE			GENMASK(18, 16)

#define   QCA8K_PORT_LOOKUP_LEARN			BIT(20)



/* Pkt edit registers */

#define QCA8K_EGRESS_VLAN(x)				(0x0c70 + (4 * (x / 2)))



/* L3 registers */

#define QCA8K_HROUTER_CONTROL				0xe00

#define   QCA8K_HROUTER_CONTROL_GLB_LOCKTIME_M		GENMASK(17, 16)

#define   QCA8K_HROUTER_CONTROL_GLB_LOCKTIME_S		16

#define   QCA8K_HROUTER_CONTROL_ARP_AGE_MODE		1

#define QCA8K_HROUTER_PBASED_CONTROL1			0xe08

#define QCA8K_HROUTER_PBASED_CONTROL2			0xe0c

#define QCA8K_HNAT_CONTROL				0xe38



/* MIB registers */

#define QCA8K_PORT_MIB_COUNTER(_i)			(0x1000 + (_i) * 0x100)



/* QCA specific MII registers */

#define MII_ATH_MMD_ADDR				0x0d

#define MII_ATH_MMD_DATA				0x0e



enum {

	QCA8K_PORT_SPEED_10M = 0,

	QCA8K_PORT_SPEED_100M = 1,

	QCA8K_PORT_SPEED_1000M = 2,

	QCA8K_PORT_SPEED_ERR = 3,

};



enum qca8k_fdb_cmd {

	QCA8K_FDB_FLUSH	= 1,

	QCA8K_FDB_LOAD = 2,

	QCA8K_FDB_PURGE = 3,

	QCA8K_FDB_NEXT = 6,

	QCA8K_FDB_SEARCH = 7,

};



struct ar8xxx_port_status {

	struct ethtool_eee eee;

	struct net_device *bridge_dev;

	int enabled;

};



struct qca8k_priv {

	struct regmap *regmap;

	struct mii_bus *bus;

	struct ar8xxx_port_status port_sts[QCA8K_NUM_PORTS];

	struct dsa_switch *ds;

	struct mutex reg_mutex;

};



struct qca8k_mib_desc {

	unsigned int size;

	unsigned int offset;

	const char *name;

};



struct qca8k_fdb {

	u16 vid;

	u8 port_mask;

	u8 aging;

	u8 mac[6];

};



#endif /* __QCA8K_H */

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