1118 lines
26 KiB
C
Executable file
1118 lines
26 KiB
C
Executable file
/*
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* Marvell 88E6xxx Switch Global 2 Registers support
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*
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* Copyright (c) 2008 Marvell Semiconductor
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*
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* Copyright (c) 2016-2017 Savoir-faire Linux Inc.
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* Vivien Didelot <vivien.didelot@savoirfairelinux.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/bitfield.h>
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#include <linux/interrupt.h>
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#include <linux/irqdomain.h>
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#include "chip.h"
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#include "global1.h" /* for MV88E6XXX_G1_STS_IRQ_DEVICE */
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#include "global2.h"
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int mv88e6xxx_g2_read(struct mv88e6xxx_chip *chip, int reg, u16 *val)
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{
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return mv88e6xxx_read(chip, chip->info->global2_addr, reg, val);
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}
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int mv88e6xxx_g2_write(struct mv88e6xxx_chip *chip, int reg, u16 val)
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{
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return mv88e6xxx_write(chip, chip->info->global2_addr, reg, val);
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}
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int mv88e6xxx_g2_update(struct mv88e6xxx_chip *chip, int reg, u16 update)
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{
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return mv88e6xxx_update(chip, chip->info->global2_addr, reg, update);
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}
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int mv88e6xxx_g2_wait(struct mv88e6xxx_chip *chip, int reg, u16 mask)
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{
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return mv88e6xxx_wait(chip, chip->info->global2_addr, reg, mask);
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}
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/* Offset 0x00: Interrupt Source Register */
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static int mv88e6xxx_g2_int_source(struct mv88e6xxx_chip *chip, u16 *src)
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{
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/* Read (and clear most of) the Interrupt Source bits */
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return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_INT_SRC, src);
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}
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/* Offset 0x01: Interrupt Mask Register */
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static int mv88e6xxx_g2_int_mask(struct mv88e6xxx_chip *chip, u16 mask)
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{
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return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_INT_MASK, mask);
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}
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/* Offset 0x02: Management Enable 2x */
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static int mv88e6xxx_g2_mgmt_enable_2x(struct mv88e6xxx_chip *chip, u16 en2x)
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{
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return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_MGMT_EN_2X, en2x);
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}
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/* Offset 0x03: Management Enable 0x */
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static int mv88e6xxx_g2_mgmt_enable_0x(struct mv88e6xxx_chip *chip, u16 en0x)
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{
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return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_MGMT_EN_0X, en0x);
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}
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/* Offset 0x05: Switch Management Register */
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static int mv88e6xxx_g2_switch_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip,
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bool enable)
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{
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u16 val;
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int err;
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err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_SWITCH_MGMT, &val);
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if (err)
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return err;
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if (enable)
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val |= MV88E6XXX_G2_SWITCH_MGMT_RSVD2CPU;
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else
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val &= ~MV88E6XXX_G2_SWITCH_MGMT_RSVD2CPU;
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return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SWITCH_MGMT, val);
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}
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int mv88e6185_g2_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
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{
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int err;
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/* Consider the frames with reserved multicast destination
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* addresses matching 01:80:c2:00:00:0x as MGMT.
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*/
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err = mv88e6xxx_g2_mgmt_enable_0x(chip, 0xffff);
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if (err)
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return err;
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return mv88e6xxx_g2_switch_mgmt_rsvd2cpu(chip, true);
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}
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int mv88e6352_g2_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
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{
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int err;
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/* Consider the frames with reserved multicast destination
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* addresses matching 01:80:c2:00:00:2x as MGMT.
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*/
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err = mv88e6xxx_g2_mgmt_enable_2x(chip, 0xffff);
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if (err)
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return err;
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return mv88e6185_g2_mgmt_rsvd2cpu(chip);
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}
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/* Offset 0x06: Device Mapping Table register */
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int mv88e6xxx_g2_device_mapping_write(struct mv88e6xxx_chip *chip, int target,
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int port)
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{
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u16 val = (target << 8) | (port & 0x1f);
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/* Modern chips use 5 bits to define a device mapping port,
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* but bit 4 is reserved on older chips, so it is safe to use.
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*/
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return mv88e6xxx_g2_update(chip, MV88E6XXX_G2_DEVICE_MAPPING, val);
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}
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/* Offset 0x07: Trunk Mask Table register */
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static int mv88e6xxx_g2_trunk_mask_write(struct mv88e6xxx_chip *chip, int num,
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bool hash, u16 mask)
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{
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u16 val = (num << 12) | (mask & mv88e6xxx_port_mask(chip));
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if (hash)
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val |= MV88E6XXX_G2_TRUNK_MASK_HASH;
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return mv88e6xxx_g2_update(chip, MV88E6XXX_G2_TRUNK_MASK, val);
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}
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/* Offset 0x08: Trunk Mapping Table register */
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static int mv88e6xxx_g2_trunk_mapping_write(struct mv88e6xxx_chip *chip, int id,
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u16 map)
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{
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const u16 port_mask = BIT(mv88e6xxx_num_ports(chip)) - 1;
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u16 val = (id << 11) | (map & port_mask);
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return mv88e6xxx_g2_update(chip, MV88E6XXX_G2_TRUNK_MAPPING, val);
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}
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int mv88e6xxx_g2_trunk_clear(struct mv88e6xxx_chip *chip)
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{
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const u16 port_mask = BIT(mv88e6xxx_num_ports(chip)) - 1;
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int i, err;
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/* Clear all eight possible Trunk Mask vectors */
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for (i = 0; i < 8; ++i) {
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err = mv88e6xxx_g2_trunk_mask_write(chip, i, false, port_mask);
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if (err)
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return err;
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}
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/* Clear all sixteen possible Trunk ID routing vectors */
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for (i = 0; i < 16; ++i) {
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err = mv88e6xxx_g2_trunk_mapping_write(chip, i, 0);
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if (err)
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return err;
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}
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return 0;
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}
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/* Offset 0x09: Ingress Rate Command register
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* Offset 0x0A: Ingress Rate Data register
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*/
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static int mv88e6xxx_g2_irl_wait(struct mv88e6xxx_chip *chip)
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{
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return mv88e6xxx_g2_wait(chip, MV88E6XXX_G2_IRL_CMD,
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MV88E6XXX_G2_IRL_CMD_BUSY);
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}
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static int mv88e6xxx_g2_irl_op(struct mv88e6xxx_chip *chip, u16 op, int port,
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int res, int reg)
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{
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int err;
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err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_IRL_CMD,
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MV88E6XXX_G2_IRL_CMD_BUSY | op | (port << 8) |
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(res << 5) | reg);
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if (err)
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return err;
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return mv88e6xxx_g2_irl_wait(chip);
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}
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int mv88e6352_g2_irl_init_all(struct mv88e6xxx_chip *chip, int port)
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{
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return mv88e6xxx_g2_irl_op(chip, MV88E6352_G2_IRL_CMD_OP_INIT_ALL, port,
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0, 0);
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}
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int mv88e6390_g2_irl_init_all(struct mv88e6xxx_chip *chip, int port)
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{
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return mv88e6xxx_g2_irl_op(chip, MV88E6390_G2_IRL_CMD_OP_INIT_ALL, port,
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0, 0);
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}
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/* Offset 0x0B: Cross-chip Port VLAN (Addr) Register
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* Offset 0x0C: Cross-chip Port VLAN Data Register
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*/
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static int mv88e6xxx_g2_pvt_op_wait(struct mv88e6xxx_chip *chip)
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{
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return mv88e6xxx_g2_wait(chip, MV88E6XXX_G2_PVT_ADDR,
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MV88E6XXX_G2_PVT_ADDR_BUSY);
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}
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static int mv88e6xxx_g2_pvt_op(struct mv88e6xxx_chip *chip, int src_dev,
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int src_port, u16 op)
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{
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int err;
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/* 9-bit Cross-chip PVT pointer: with MV88E6XXX_G2_MISC_5_BIT_PORT
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* cleared, source device is 5-bit, source port is 4-bit.
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*/
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op |= MV88E6XXX_G2_PVT_ADDR_BUSY;
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op |= (src_dev & 0x1f) << 4;
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op |= (src_port & 0xf);
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err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_PVT_ADDR, op);
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if (err)
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return err;
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return mv88e6xxx_g2_pvt_op_wait(chip);
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}
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int mv88e6xxx_g2_pvt_write(struct mv88e6xxx_chip *chip, int src_dev,
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int src_port, u16 data)
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{
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int err;
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err = mv88e6xxx_g2_pvt_op_wait(chip);
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if (err)
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return err;
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err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_PVT_DATA, data);
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if (err)
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return err;
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return mv88e6xxx_g2_pvt_op(chip, src_dev, src_port,
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MV88E6XXX_G2_PVT_ADDR_OP_WRITE_PVLAN);
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}
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/* Offset 0x0D: Switch MAC/WoL/WoF register */
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static int mv88e6xxx_g2_switch_mac_write(struct mv88e6xxx_chip *chip,
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unsigned int pointer, u8 data)
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{
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u16 val = (pointer << 8) | data;
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return mv88e6xxx_g2_update(chip, MV88E6XXX_G2_SWITCH_MAC, val);
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}
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int mv88e6xxx_g2_set_switch_mac(struct mv88e6xxx_chip *chip, u8 *addr)
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{
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int i, err;
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for (i = 0; i < 6; i++) {
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err = mv88e6xxx_g2_switch_mac_write(chip, i, addr[i]);
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if (err)
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break;
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}
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return err;
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}
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/* Offset 0x0F: Priority Override Table */
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static int mv88e6xxx_g2_pot_write(struct mv88e6xxx_chip *chip, int pointer,
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u8 data)
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{
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u16 val = (pointer << 8) | (data & 0x7);
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return mv88e6xxx_g2_update(chip, MV88E6XXX_G2_PRIO_OVERRIDE, val);
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}
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int mv88e6xxx_g2_pot_clear(struct mv88e6xxx_chip *chip)
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{
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int i, err;
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/* Clear all sixteen possible Priority Override entries */
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for (i = 0; i < 16; i++) {
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err = mv88e6xxx_g2_pot_write(chip, i, 0);
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if (err)
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break;
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}
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return err;
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}
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/* Offset 0x14: EEPROM Command
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* Offset 0x15: EEPROM Data (for 16-bit data access)
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* Offset 0x15: EEPROM Addr (for 8-bit data access)
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*/
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static int mv88e6xxx_g2_eeprom_wait(struct mv88e6xxx_chip *chip)
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{
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return mv88e6xxx_g2_wait(chip, MV88E6XXX_G2_EEPROM_CMD,
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MV88E6XXX_G2_EEPROM_CMD_BUSY |
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MV88E6XXX_G2_EEPROM_CMD_RUNNING);
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}
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static int mv88e6xxx_g2_eeprom_cmd(struct mv88e6xxx_chip *chip, u16 cmd)
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{
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int err;
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err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_EEPROM_CMD,
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MV88E6XXX_G2_EEPROM_CMD_BUSY | cmd);
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if (err)
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return err;
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return mv88e6xxx_g2_eeprom_wait(chip);
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}
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static int mv88e6xxx_g2_eeprom_read8(struct mv88e6xxx_chip *chip,
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u16 addr, u8 *data)
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{
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u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_READ;
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int err;
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err = mv88e6xxx_g2_eeprom_wait(chip);
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if (err)
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return err;
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err = mv88e6xxx_g2_write(chip, MV88E6390_G2_EEPROM_ADDR, addr);
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if (err)
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return err;
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err = mv88e6xxx_g2_eeprom_cmd(chip, cmd);
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if (err)
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return err;
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err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_EEPROM_CMD, &cmd);
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if (err)
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return err;
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*data = cmd & 0xff;
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return 0;
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}
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static int mv88e6xxx_g2_eeprom_write8(struct mv88e6xxx_chip *chip,
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u16 addr, u8 data)
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{
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u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_WRITE |
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MV88E6XXX_G2_EEPROM_CMD_WRITE_EN;
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int err;
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err = mv88e6xxx_g2_eeprom_wait(chip);
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if (err)
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return err;
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err = mv88e6xxx_g2_write(chip, MV88E6390_G2_EEPROM_ADDR, addr);
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if (err)
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return err;
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return mv88e6xxx_g2_eeprom_cmd(chip, cmd | data);
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}
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static int mv88e6xxx_g2_eeprom_read16(struct mv88e6xxx_chip *chip,
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u8 addr, u16 *data)
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{
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u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_READ | addr;
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int err;
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err = mv88e6xxx_g2_eeprom_wait(chip);
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if (err)
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return err;
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err = mv88e6xxx_g2_eeprom_cmd(chip, cmd);
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if (err)
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return err;
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return mv88e6xxx_g2_read(chip, MV88E6352_G2_EEPROM_DATA, data);
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}
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static int mv88e6xxx_g2_eeprom_write16(struct mv88e6xxx_chip *chip,
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u8 addr, u16 data)
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{
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u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_WRITE | addr;
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int err;
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err = mv88e6xxx_g2_eeprom_wait(chip);
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if (err)
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return err;
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err = mv88e6xxx_g2_write(chip, MV88E6352_G2_EEPROM_DATA, data);
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if (err)
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return err;
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return mv88e6xxx_g2_eeprom_cmd(chip, cmd);
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}
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int mv88e6xxx_g2_get_eeprom8(struct mv88e6xxx_chip *chip,
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struct ethtool_eeprom *eeprom, u8 *data)
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{
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unsigned int offset = eeprom->offset;
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unsigned int len = eeprom->len;
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int err;
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eeprom->len = 0;
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while (len) {
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err = mv88e6xxx_g2_eeprom_read8(chip, offset, data);
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if (err)
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return err;
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eeprom->len++;
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offset++;
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data++;
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len--;
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}
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return 0;
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}
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int mv88e6xxx_g2_set_eeprom8(struct mv88e6xxx_chip *chip,
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struct ethtool_eeprom *eeprom, u8 *data)
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{
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unsigned int offset = eeprom->offset;
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unsigned int len = eeprom->len;
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int err;
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eeprom->len = 0;
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while (len) {
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err = mv88e6xxx_g2_eeprom_write8(chip, offset, *data);
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if (err)
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return err;
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eeprom->len++;
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offset++;
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data++;
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len--;
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}
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return 0;
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}
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int mv88e6xxx_g2_get_eeprom16(struct mv88e6xxx_chip *chip,
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struct ethtool_eeprom *eeprom, u8 *data)
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{
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unsigned int offset = eeprom->offset;
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unsigned int len = eeprom->len;
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u16 val;
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int err;
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eeprom->len = 0;
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if (offset & 1) {
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err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
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if (err)
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return err;
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*data++ = (val >> 8) & 0xff;
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offset++;
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len--;
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eeprom->len++;
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}
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while (len >= 2) {
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err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
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if (err)
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return err;
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*data++ = val & 0xff;
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*data++ = (val >> 8) & 0xff;
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offset += 2;
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len -= 2;
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eeprom->len += 2;
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}
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|
|
if (len) {
|
|
err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
*data++ = val & 0xff;
|
|
|
|
offset++;
|
|
len--;
|
|
eeprom->len++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mv88e6xxx_g2_set_eeprom16(struct mv88e6xxx_chip *chip,
|
|
struct ethtool_eeprom *eeprom, u8 *data)
|
|
{
|
|
unsigned int offset = eeprom->offset;
|
|
unsigned int len = eeprom->len;
|
|
u16 val;
|
|
int err;
|
|
|
|
/* Ensure the RO WriteEn bit is set */
|
|
err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_EEPROM_CMD, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!(val & MV88E6XXX_G2_EEPROM_CMD_WRITE_EN))
|
|
return -EROFS;
|
|
|
|
eeprom->len = 0;
|
|
|
|
if (offset & 1) {
|
|
err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
val = (*data++ << 8) | (val & 0xff);
|
|
|
|
err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
|
|
if (err)
|
|
return err;
|
|
|
|
offset++;
|
|
len--;
|
|
eeprom->len++;
|
|
}
|
|
|
|
while (len >= 2) {
|
|
val = *data++;
|
|
val |= *data++ << 8;
|
|
|
|
err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
|
|
if (err)
|
|
return err;
|
|
|
|
offset += 2;
|
|
len -= 2;
|
|
eeprom->len += 2;
|
|
}
|
|
|
|
if (len) {
|
|
err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
val = (val & 0xff00) | *data++;
|
|
|
|
err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
|
|
if (err)
|
|
return err;
|
|
|
|
offset++;
|
|
len--;
|
|
eeprom->len++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Offset 0x18: SMI PHY Command Register
|
|
* Offset 0x19: SMI PHY Data Register
|
|
*/
|
|
|
|
static int mv88e6xxx_g2_smi_phy_wait(struct mv88e6xxx_chip *chip)
|
|
{
|
|
return mv88e6xxx_g2_wait(chip, MV88E6XXX_G2_SMI_PHY_CMD,
|
|
MV88E6XXX_G2_SMI_PHY_CMD_BUSY);
|
|
}
|
|
|
|
static int mv88e6xxx_g2_smi_phy_cmd(struct mv88e6xxx_chip *chip, u16 cmd)
|
|
{
|
|
int err;
|
|
|
|
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_CMD,
|
|
MV88E6XXX_G2_SMI_PHY_CMD_BUSY | cmd);
|
|
if (err)
|
|
return err;
|
|
|
|
return mv88e6xxx_g2_smi_phy_wait(chip);
|
|
}
|
|
|
|
static int mv88e6xxx_g2_smi_phy_access(struct mv88e6xxx_chip *chip,
|
|
bool external, bool c45, u16 op, int dev,
|
|
int reg)
|
|
{
|
|
u16 cmd = op;
|
|
|
|
if (external)
|
|
cmd |= MV88E6390_G2_SMI_PHY_CMD_FUNC_EXTERNAL;
|
|
else
|
|
cmd |= MV88E6390_G2_SMI_PHY_CMD_FUNC_INTERNAL; /* empty mask */
|
|
|
|
if (c45)
|
|
cmd |= MV88E6XXX_G2_SMI_PHY_CMD_MODE_45; /* empty mask */
|
|
else
|
|
cmd |= MV88E6XXX_G2_SMI_PHY_CMD_MODE_22;
|
|
|
|
dev <<= __bf_shf(MV88E6XXX_G2_SMI_PHY_CMD_DEV_ADDR_MASK);
|
|
cmd |= dev & MV88E6XXX_G2_SMI_PHY_CMD_DEV_ADDR_MASK;
|
|
cmd |= reg & MV88E6XXX_G2_SMI_PHY_CMD_REG_ADDR_MASK;
|
|
|
|
return mv88e6xxx_g2_smi_phy_cmd(chip, cmd);
|
|
}
|
|
|
|
static int mv88e6xxx_g2_smi_phy_access_c22(struct mv88e6xxx_chip *chip,
|
|
bool external, u16 op, int dev,
|
|
int reg)
|
|
{
|
|
return mv88e6xxx_g2_smi_phy_access(chip, external, false, op, dev, reg);
|
|
}
|
|
|
|
/* IEEE 802.3 Clause 22 Read Data Register */
|
|
static int mv88e6xxx_g2_smi_phy_read_data_c22(struct mv88e6xxx_chip *chip,
|
|
bool external, int dev, int reg,
|
|
u16 *data)
|
|
{
|
|
u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_22_READ_DATA;
|
|
int err;
|
|
|
|
err = mv88e6xxx_g2_smi_phy_wait(chip);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mv88e6xxx_g2_smi_phy_access_c22(chip, external, op, dev, reg);
|
|
if (err)
|
|
return err;
|
|
|
|
return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
|
|
}
|
|
|
|
/* IEEE 802.3 Clause 22 Write Data Register */
|
|
static int mv88e6xxx_g2_smi_phy_write_data_c22(struct mv88e6xxx_chip *chip,
|
|
bool external, int dev, int reg,
|
|
u16 data)
|
|
{
|
|
u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_22_WRITE_DATA;
|
|
int err;
|
|
|
|
err = mv88e6xxx_g2_smi_phy_wait(chip);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
|
|
if (err)
|
|
return err;
|
|
|
|
return mv88e6xxx_g2_smi_phy_access_c22(chip, external, op, dev, reg);
|
|
}
|
|
|
|
static int mv88e6xxx_g2_smi_phy_access_c45(struct mv88e6xxx_chip *chip,
|
|
bool external, u16 op, int port,
|
|
int dev)
|
|
{
|
|
return mv88e6xxx_g2_smi_phy_access(chip, external, true, op, port, dev);
|
|
}
|
|
|
|
/* IEEE 802.3 Clause 45 Write Address Register */
|
|
static int mv88e6xxx_g2_smi_phy_write_addr_c45(struct mv88e6xxx_chip *chip,
|
|
bool external, int port, int dev,
|
|
int addr)
|
|
{
|
|
u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_45_WRITE_ADDR;
|
|
int err;
|
|
|
|
err = mv88e6xxx_g2_smi_phy_wait(chip);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_DATA, addr);
|
|
if (err)
|
|
return err;
|
|
|
|
return mv88e6xxx_g2_smi_phy_access_c45(chip, external, op, port, dev);
|
|
}
|
|
|
|
/* IEEE 802.3 Clause 45 Read Data Register */
|
|
static int mv88e6xxx_g2_smi_phy_read_data_c45(struct mv88e6xxx_chip *chip,
|
|
bool external, int port, int dev,
|
|
u16 *data)
|
|
{
|
|
u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_45_READ_DATA;
|
|
int err;
|
|
|
|
err = mv88e6xxx_g2_smi_phy_access_c45(chip, external, op, port, dev);
|
|
if (err)
|
|
return err;
|
|
|
|
return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
|
|
}
|
|
|
|
static int mv88e6xxx_g2_smi_phy_read_c45(struct mv88e6xxx_chip *chip,
|
|
bool external, int port, int reg,
|
|
u16 *data)
|
|
{
|
|
int dev = (reg >> 16) & 0x1f;
|
|
int addr = reg & 0xffff;
|
|
int err;
|
|
|
|
err = mv88e6xxx_g2_smi_phy_write_addr_c45(chip, external, port, dev,
|
|
addr);
|
|
if (err)
|
|
return err;
|
|
|
|
return mv88e6xxx_g2_smi_phy_read_data_c45(chip, external, port, dev,
|
|
data);
|
|
}
|
|
|
|
/* IEEE 802.3 Clause 45 Write Data Register */
|
|
static int mv88e6xxx_g2_smi_phy_write_data_c45(struct mv88e6xxx_chip *chip,
|
|
bool external, int port, int dev,
|
|
u16 data)
|
|
{
|
|
u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_45_WRITE_DATA;
|
|
int err;
|
|
|
|
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
|
|
if (err)
|
|
return err;
|
|
|
|
return mv88e6xxx_g2_smi_phy_access_c45(chip, external, op, port, dev);
|
|
}
|
|
|
|
static int mv88e6xxx_g2_smi_phy_write_c45(struct mv88e6xxx_chip *chip,
|
|
bool external, int port, int reg,
|
|
u16 data)
|
|
{
|
|
int dev = (reg >> 16) & 0x1f;
|
|
int addr = reg & 0xffff;
|
|
int err;
|
|
|
|
err = mv88e6xxx_g2_smi_phy_write_addr_c45(chip, external, port, dev,
|
|
addr);
|
|
if (err)
|
|
return err;
|
|
|
|
return mv88e6xxx_g2_smi_phy_write_data_c45(chip, external, port, dev,
|
|
data);
|
|
}
|
|
|
|
int mv88e6xxx_g2_smi_phy_read(struct mv88e6xxx_chip *chip, struct mii_bus *bus,
|
|
int addr, int reg, u16 *val)
|
|
{
|
|
struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
|
|
bool external = mdio_bus->external;
|
|
|
|
if (reg & MII_ADDR_C45)
|
|
return mv88e6xxx_g2_smi_phy_read_c45(chip, external, addr, reg,
|
|
val);
|
|
|
|
return mv88e6xxx_g2_smi_phy_read_data_c22(chip, external, addr, reg,
|
|
val);
|
|
}
|
|
|
|
int mv88e6xxx_g2_smi_phy_write(struct mv88e6xxx_chip *chip, struct mii_bus *bus,
|
|
int addr, int reg, u16 val)
|
|
{
|
|
struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
|
|
bool external = mdio_bus->external;
|
|
|
|
if (reg & MII_ADDR_C45)
|
|
return mv88e6xxx_g2_smi_phy_write_c45(chip, external, addr, reg,
|
|
val);
|
|
|
|
return mv88e6xxx_g2_smi_phy_write_data_c22(chip, external, addr, reg,
|
|
val);
|
|
}
|
|
|
|
/* Offset 0x1B: Watchdog Control */
|
|
static int mv88e6097_watchdog_action(struct mv88e6xxx_chip *chip, int irq)
|
|
{
|
|
u16 reg;
|
|
|
|
mv88e6xxx_g2_read(chip, MV88E6352_G2_WDOG_CTL, ®);
|
|
|
|
dev_info(chip->dev, "Watchdog event: 0x%04x", reg);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void mv88e6097_watchdog_free(struct mv88e6xxx_chip *chip)
|
|
{
|
|
u16 reg;
|
|
|
|
mv88e6xxx_g2_read(chip, MV88E6352_G2_WDOG_CTL, ®);
|
|
|
|
reg &= ~(MV88E6352_G2_WDOG_CTL_EGRESS_ENABLE |
|
|
MV88E6352_G2_WDOG_CTL_QC_ENABLE);
|
|
|
|
mv88e6xxx_g2_write(chip, MV88E6352_G2_WDOG_CTL, reg);
|
|
}
|
|
|
|
static int mv88e6097_watchdog_setup(struct mv88e6xxx_chip *chip)
|
|
{
|
|
return mv88e6xxx_g2_write(chip, MV88E6352_G2_WDOG_CTL,
|
|
MV88E6352_G2_WDOG_CTL_EGRESS_ENABLE |
|
|
MV88E6352_G2_WDOG_CTL_QC_ENABLE |
|
|
MV88E6352_G2_WDOG_CTL_SWRESET);
|
|
}
|
|
|
|
const struct mv88e6xxx_irq_ops mv88e6097_watchdog_ops = {
|
|
.irq_action = mv88e6097_watchdog_action,
|
|
.irq_setup = mv88e6097_watchdog_setup,
|
|
.irq_free = mv88e6097_watchdog_free,
|
|
};
|
|
|
|
static int mv88e6390_watchdog_setup(struct mv88e6xxx_chip *chip)
|
|
{
|
|
return mv88e6xxx_g2_update(chip, MV88E6390_G2_WDOG_CTL,
|
|
MV88E6390_G2_WDOG_CTL_PTR_INT_ENABLE |
|
|
MV88E6390_G2_WDOG_CTL_CUT_THROUGH |
|
|
MV88E6390_G2_WDOG_CTL_QUEUE_CONTROLLER |
|
|
MV88E6390_G2_WDOG_CTL_EGRESS |
|
|
MV88E6390_G2_WDOG_CTL_FORCE_IRQ);
|
|
}
|
|
|
|
static int mv88e6390_watchdog_action(struct mv88e6xxx_chip *chip, int irq)
|
|
{
|
|
int err;
|
|
u16 reg;
|
|
|
|
mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
|
|
MV88E6390_G2_WDOG_CTL_PTR_EVENT);
|
|
err = mv88e6xxx_g2_read(chip, MV88E6390_G2_WDOG_CTL, ®);
|
|
|
|
dev_info(chip->dev, "Watchdog event: 0x%04x",
|
|
reg & MV88E6390_G2_WDOG_CTL_DATA_MASK);
|
|
|
|
mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
|
|
MV88E6390_G2_WDOG_CTL_PTR_HISTORY);
|
|
err = mv88e6xxx_g2_read(chip, MV88E6390_G2_WDOG_CTL, ®);
|
|
|
|
dev_info(chip->dev, "Watchdog history: 0x%04x",
|
|
reg & MV88E6390_G2_WDOG_CTL_DATA_MASK);
|
|
|
|
/* Trigger a software reset to try to recover the switch */
|
|
if (chip->info->ops->reset)
|
|
chip->info->ops->reset(chip);
|
|
|
|
mv88e6390_watchdog_setup(chip);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void mv88e6390_watchdog_free(struct mv88e6xxx_chip *chip)
|
|
{
|
|
mv88e6xxx_g2_update(chip, MV88E6390_G2_WDOG_CTL,
|
|
MV88E6390_G2_WDOG_CTL_PTR_INT_ENABLE);
|
|
}
|
|
|
|
const struct mv88e6xxx_irq_ops mv88e6390_watchdog_ops = {
|
|
.irq_action = mv88e6390_watchdog_action,
|
|
.irq_setup = mv88e6390_watchdog_setup,
|
|
.irq_free = mv88e6390_watchdog_free,
|
|
};
|
|
|
|
static irqreturn_t mv88e6xxx_g2_watchdog_thread_fn(int irq, void *dev_id)
|
|
{
|
|
struct mv88e6xxx_chip *chip = dev_id;
|
|
irqreturn_t ret = IRQ_NONE;
|
|
|
|
mutex_lock(&chip->reg_lock);
|
|
if (chip->info->ops->watchdog_ops->irq_action)
|
|
ret = chip->info->ops->watchdog_ops->irq_action(chip, irq);
|
|
mutex_unlock(&chip->reg_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void mv88e6xxx_g2_watchdog_free(struct mv88e6xxx_chip *chip)
|
|
{
|
|
mutex_lock(&chip->reg_lock);
|
|
if (chip->info->ops->watchdog_ops->irq_free)
|
|
chip->info->ops->watchdog_ops->irq_free(chip);
|
|
mutex_unlock(&chip->reg_lock);
|
|
|
|
free_irq(chip->watchdog_irq, chip);
|
|
irq_dispose_mapping(chip->watchdog_irq);
|
|
}
|
|
|
|
static int mv88e6xxx_g2_watchdog_setup(struct mv88e6xxx_chip *chip)
|
|
{
|
|
int err;
|
|
|
|
chip->watchdog_irq = irq_find_mapping(chip->g2_irq.domain,
|
|
MV88E6XXX_G2_INT_SOURCE_WATCHDOG);
|
|
if (chip->watchdog_irq < 0)
|
|
return chip->watchdog_irq;
|
|
|
|
err = request_threaded_irq(chip->watchdog_irq, NULL,
|
|
mv88e6xxx_g2_watchdog_thread_fn,
|
|
IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
|
|
"mv88e6xxx-watchdog", chip);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&chip->reg_lock);
|
|
if (chip->info->ops->watchdog_ops->irq_setup)
|
|
err = chip->info->ops->watchdog_ops->irq_setup(chip);
|
|
mutex_unlock(&chip->reg_lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
/* Offset 0x1D: Misc Register */
|
|
|
|
static int mv88e6xxx_g2_misc_5_bit_port(struct mv88e6xxx_chip *chip,
|
|
bool port_5_bit)
|
|
{
|
|
u16 val;
|
|
int err;
|
|
|
|
err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_MISC, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
if (port_5_bit)
|
|
val |= MV88E6XXX_G2_MISC_5_BIT_PORT;
|
|
else
|
|
val &= ~MV88E6XXX_G2_MISC_5_BIT_PORT;
|
|
|
|
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_MISC, val);
|
|
}
|
|
|
|
int mv88e6xxx_g2_misc_4_bit_port(struct mv88e6xxx_chip *chip)
|
|
{
|
|
return mv88e6xxx_g2_misc_5_bit_port(chip, false);
|
|
}
|
|
|
|
static void mv88e6xxx_g2_irq_mask(struct irq_data *d)
|
|
{
|
|
struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
|
|
unsigned int n = d->hwirq;
|
|
|
|
chip->g2_irq.masked |= (1 << n);
|
|
}
|
|
|
|
static void mv88e6xxx_g2_irq_unmask(struct irq_data *d)
|
|
{
|
|
struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
|
|
unsigned int n = d->hwirq;
|
|
|
|
chip->g2_irq.masked &= ~(1 << n);
|
|
}
|
|
|
|
static irqreturn_t mv88e6xxx_g2_irq_thread_fn(int irq, void *dev_id)
|
|
{
|
|
struct mv88e6xxx_chip *chip = dev_id;
|
|
unsigned int nhandled = 0;
|
|
unsigned int sub_irq;
|
|
unsigned int n;
|
|
int err;
|
|
u16 reg;
|
|
|
|
mutex_lock(&chip->reg_lock);
|
|
err = mv88e6xxx_g2_int_source(chip, ®);
|
|
mutex_unlock(&chip->reg_lock);
|
|
if (err)
|
|
goto out;
|
|
|
|
for (n = 0; n < 16; ++n) {
|
|
if (reg & (1 << n)) {
|
|
sub_irq = irq_find_mapping(chip->g2_irq.domain, n);
|
|
handle_nested_irq(sub_irq);
|
|
++nhandled;
|
|
}
|
|
}
|
|
out:
|
|
return (nhandled > 0 ? IRQ_HANDLED : IRQ_NONE);
|
|
}
|
|
|
|
static void mv88e6xxx_g2_irq_bus_lock(struct irq_data *d)
|
|
{
|
|
struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
|
|
|
|
mutex_lock(&chip->reg_lock);
|
|
}
|
|
|
|
static void mv88e6xxx_g2_irq_bus_sync_unlock(struct irq_data *d)
|
|
{
|
|
struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
|
|
int err;
|
|
|
|
err = mv88e6xxx_g2_int_mask(chip, ~chip->g2_irq.masked);
|
|
if (err)
|
|
dev_err(chip->dev, "failed to mask interrupts\n");
|
|
|
|
mutex_unlock(&chip->reg_lock);
|
|
}
|
|
|
|
static const struct irq_chip mv88e6xxx_g2_irq_chip = {
|
|
.name = "mv88e6xxx-g2",
|
|
.irq_mask = mv88e6xxx_g2_irq_mask,
|
|
.irq_unmask = mv88e6xxx_g2_irq_unmask,
|
|
.irq_bus_lock = mv88e6xxx_g2_irq_bus_lock,
|
|
.irq_bus_sync_unlock = mv88e6xxx_g2_irq_bus_sync_unlock,
|
|
};
|
|
|
|
static int mv88e6xxx_g2_irq_domain_map(struct irq_domain *d,
|
|
unsigned int irq,
|
|
irq_hw_number_t hwirq)
|
|
{
|
|
struct mv88e6xxx_chip *chip = d->host_data;
|
|
|
|
irq_set_chip_data(irq, d->host_data);
|
|
irq_set_chip_and_handler(irq, &chip->g2_irq.chip, handle_level_irq);
|
|
irq_set_noprobe(irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct irq_domain_ops mv88e6xxx_g2_irq_domain_ops = {
|
|
.map = mv88e6xxx_g2_irq_domain_map,
|
|
.xlate = irq_domain_xlate_twocell,
|
|
};
|
|
|
|
void mv88e6xxx_g2_irq_free(struct mv88e6xxx_chip *chip)
|
|
{
|
|
int irq, virq;
|
|
|
|
mv88e6xxx_g2_watchdog_free(chip);
|
|
|
|
free_irq(chip->device_irq, chip);
|
|
irq_dispose_mapping(chip->device_irq);
|
|
|
|
for (irq = 0; irq < 16; irq++) {
|
|
virq = irq_find_mapping(chip->g2_irq.domain, irq);
|
|
irq_dispose_mapping(virq);
|
|
}
|
|
|
|
irq_domain_remove(chip->g2_irq.domain);
|
|
}
|
|
|
|
int mv88e6xxx_g2_irq_setup(struct mv88e6xxx_chip *chip)
|
|
{
|
|
int err, irq, virq;
|
|
|
|
chip->g2_irq.domain = irq_domain_add_simple(
|
|
chip->dev->of_node, 16, 0, &mv88e6xxx_g2_irq_domain_ops, chip);
|
|
if (!chip->g2_irq.domain)
|
|
return -ENOMEM;
|
|
|
|
for (irq = 0; irq < 16; irq++)
|
|
irq_create_mapping(chip->g2_irq.domain, irq);
|
|
|
|
chip->g2_irq.chip = mv88e6xxx_g2_irq_chip;
|
|
chip->g2_irq.masked = ~0;
|
|
|
|
chip->device_irq = irq_find_mapping(chip->g1_irq.domain,
|
|
MV88E6XXX_G1_STS_IRQ_DEVICE);
|
|
if (chip->device_irq < 0) {
|
|
err = chip->device_irq;
|
|
goto out;
|
|
}
|
|
|
|
err = request_threaded_irq(chip->device_irq, NULL,
|
|
mv88e6xxx_g2_irq_thread_fn,
|
|
IRQF_ONESHOT, "mv88e6xxx-g2", chip);
|
|
if (err)
|
|
goto out;
|
|
|
|
return mv88e6xxx_g2_watchdog_setup(chip);
|
|
|
|
out:
|
|
for (irq = 0; irq < 16; irq++) {
|
|
virq = irq_find_mapping(chip->g2_irq.domain, irq);
|
|
irq_dispose_mapping(virq);
|
|
}
|
|
|
|
irq_domain_remove(chip->g2_irq.domain);
|
|
|
|
return err;
|
|
}
|
|
|
|
int mv88e6xxx_g2_irq_mdio_setup(struct mv88e6xxx_chip *chip,
|
|
struct mii_bus *bus)
|
|
{
|
|
int phy, irq, err, err_phy;
|
|
|
|
for (phy = 0; phy < chip->info->num_internal_phys; phy++) {
|
|
irq = irq_find_mapping(chip->g2_irq.domain, phy);
|
|
if (irq < 0) {
|
|
err = irq;
|
|
goto out;
|
|
}
|
|
bus->irq[chip->info->phy_base_addr + phy] = irq;
|
|
}
|
|
return 0;
|
|
out:
|
|
err_phy = phy;
|
|
|
|
for (phy = 0; phy < err_phy; phy++)
|
|
irq_dispose_mapping(bus->irq[phy]);
|
|
|
|
return err;
|
|
}
|
|
|
|
void mv88e6xxx_g2_irq_mdio_free(struct mv88e6xxx_chip *chip,
|
|
struct mii_bus *bus)
|
|
{
|
|
int phy;
|
|
|
|
for (phy = 0; phy < chip->info->num_internal_phys; phy++)
|
|
irq_dispose_mapping(bus->irq[phy]);
|
|
}
|