| /* |
| * Marvell 88E6xxx Switch Global (1) Registers support |
| * |
| * Copyright (c) 2008 Marvell Semiconductor |
| * |
| * Copyright (c) 2016 Vivien Didelot <vivien.didelot@savoirfairelinux.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include "mv88e6xxx.h" |
| #include "global1.h" |
| |
| int mv88e6xxx_g1_read(struct mv88e6xxx_chip *chip, int reg, u16 *val) |
| { |
| int addr = chip->info->global1_addr; |
| |
| return mv88e6xxx_read(chip, addr, reg, val); |
| } |
| |
| int mv88e6xxx_g1_write(struct mv88e6xxx_chip *chip, int reg, u16 val) |
| { |
| int addr = chip->info->global1_addr; |
| |
| return mv88e6xxx_write(chip, addr, reg, val); |
| } |
| |
| int mv88e6xxx_g1_wait(struct mv88e6xxx_chip *chip, int reg, u16 mask) |
| { |
| return mv88e6xxx_wait(chip, chip->info->global1_addr, reg, mask); |
| } |
| |
| /* Offset 0x00: Switch Global Status Register */ |
| |
| static int mv88e6185_g1_wait_ppu_disabled(struct mv88e6xxx_chip *chip) |
| { |
| u16 state; |
| int i, err; |
| |
| for (i = 0; i < 16; i++) { |
| err = mv88e6xxx_g1_read(chip, GLOBAL_STATUS, &state); |
| if (err) |
| return err; |
| |
| /* Check the value of the PPUState bits 15:14 */ |
| state &= GLOBAL_STATUS_PPU_STATE_MASK; |
| if (state != GLOBAL_STATUS_PPU_STATE_POLLING) |
| return 0; |
| |
| usleep_range(1000, 2000); |
| } |
| |
| return -ETIMEDOUT; |
| } |
| |
| static int mv88e6185_g1_wait_ppu_polling(struct mv88e6xxx_chip *chip) |
| { |
| u16 state; |
| int i, err; |
| |
| for (i = 0; i < 16; ++i) { |
| err = mv88e6xxx_g1_read(chip, GLOBAL_STATUS, &state); |
| if (err) |
| return err; |
| |
| /* Check the value of the PPUState bits 15:14 */ |
| state &= GLOBAL_STATUS_PPU_STATE_MASK; |
| if (state == GLOBAL_STATUS_PPU_STATE_POLLING) |
| return 0; |
| |
| usleep_range(1000, 2000); |
| } |
| |
| return -ETIMEDOUT; |
| } |
| |
| static int mv88e6352_g1_wait_ppu_polling(struct mv88e6xxx_chip *chip) |
| { |
| u16 state; |
| int i, err; |
| |
| for (i = 0; i < 16; ++i) { |
| err = mv88e6xxx_g1_read(chip, GLOBAL_STATUS, &state); |
| if (err) |
| return err; |
| |
| /* Check the value of the PPUState (or InitState) bit 15 */ |
| if (state & GLOBAL_STATUS_PPU_STATE) |
| return 0; |
| |
| usleep_range(1000, 2000); |
| } |
| |
| return -ETIMEDOUT; |
| } |
| |
| static int mv88e6xxx_g1_wait_init_ready(struct mv88e6xxx_chip *chip) |
| { |
| const unsigned long timeout = jiffies + 1 * HZ; |
| u16 val; |
| int err; |
| |
| /* Wait up to 1 second for the switch to be ready. The InitReady bit 11 |
| * is set to a one when all units inside the device (ATU, VTU, etc.) |
| * have finished their initialization and are ready to accept frames. |
| */ |
| while (time_before(jiffies, timeout)) { |
| err = mv88e6xxx_g1_read(chip, GLOBAL_STATUS, &val); |
| if (err) |
| return err; |
| |
| if (val & GLOBAL_STATUS_INIT_READY) |
| break; |
| |
| usleep_range(1000, 2000); |
| } |
| |
| if (time_after(jiffies, timeout)) |
| return -ETIMEDOUT; |
| |
| return 0; |
| } |
| |
| /* Offset 0x04: Switch Global Control Register */ |
| |
| int mv88e6185_g1_reset(struct mv88e6xxx_chip *chip) |
| { |
| u16 val; |
| int err; |
| |
| /* Set the SWReset bit 15 along with the PPUEn bit 14, to also restart |
| * the PPU, including re-doing PHY detection and initialization |
| */ |
| err = mv88e6xxx_g1_read(chip, GLOBAL_CONTROL, &val); |
| if (err) |
| return err; |
| |
| val |= GLOBAL_CONTROL_SW_RESET; |
| val |= GLOBAL_CONTROL_PPU_ENABLE; |
| |
| err = mv88e6xxx_g1_write(chip, GLOBAL_CONTROL, val); |
| if (err) |
| return err; |
| |
| err = mv88e6xxx_g1_wait_init_ready(chip); |
| if (err) |
| return err; |
| |
| return mv88e6185_g1_wait_ppu_polling(chip); |
| } |
| |
| int mv88e6352_g1_reset(struct mv88e6xxx_chip *chip) |
| { |
| u16 val; |
| int err; |
| |
| /* Set the SWReset bit 15 */ |
| err = mv88e6xxx_g1_read(chip, GLOBAL_CONTROL, &val); |
| if (err) |
| return err; |
| |
| val |= GLOBAL_CONTROL_SW_RESET; |
| |
| err = mv88e6xxx_g1_write(chip, GLOBAL_CONTROL, val); |
| if (err) |
| return err; |
| |
| err = mv88e6xxx_g1_wait_init_ready(chip); |
| if (err) |
| return err; |
| |
| return mv88e6352_g1_wait_ppu_polling(chip); |
| } |
| |
| int mv88e6185_g1_ppu_enable(struct mv88e6xxx_chip *chip) |
| { |
| u16 val; |
| int err; |
| |
| err = mv88e6xxx_g1_read(chip, GLOBAL_CONTROL, &val); |
| if (err) |
| return err; |
| |
| val |= GLOBAL_CONTROL_PPU_ENABLE; |
| |
| err = mv88e6xxx_g1_write(chip, GLOBAL_CONTROL, val); |
| if (err) |
| return err; |
| |
| return mv88e6185_g1_wait_ppu_polling(chip); |
| } |
| |
| int mv88e6185_g1_ppu_disable(struct mv88e6xxx_chip *chip) |
| { |
| u16 val; |
| int err; |
| |
| err = mv88e6xxx_g1_read(chip, GLOBAL_CONTROL, &val); |
| if (err) |
| return err; |
| |
| val &= ~GLOBAL_CONTROL_PPU_ENABLE; |
| |
| err = mv88e6xxx_g1_write(chip, GLOBAL_CONTROL, val); |
| if (err) |
| return err; |
| |
| return mv88e6185_g1_wait_ppu_disabled(chip); |
| } |
| |
| /* Offset 0x1a: Monitor Control */ |
| /* Offset 0x1a: Monitor & MGMT Control on some devices */ |
| |
| int mv88e6095_g1_set_egress_port(struct mv88e6xxx_chip *chip, int port) |
| { |
| u16 reg; |
| int err; |
| |
| err = mv88e6xxx_g1_read(chip, GLOBAL_MONITOR_CONTROL, ®); |
| if (err) |
| return err; |
| |
| reg &= ~(GLOBAL_MONITOR_CONTROL_INGRESS_MASK | |
| GLOBAL_MONITOR_CONTROL_EGRESS_MASK); |
| |
| reg |= port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT | |
| port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT; |
| |
| return mv88e6xxx_g1_write(chip, GLOBAL_MONITOR_CONTROL, reg); |
| } |
| |
| /* Older generations also call this the ARP destination. It has been |
| * generalized in more modern devices such that more than ARP can |
| * egress it |
| */ |
| int mv88e6095_g1_set_cpu_port(struct mv88e6xxx_chip *chip, int port) |
| { |
| u16 reg; |
| int err; |
| |
| err = mv88e6xxx_g1_read(chip, GLOBAL_MONITOR_CONTROL, ®); |
| if (err) |
| return err; |
| |
| reg &= ~GLOBAL_MONITOR_CONTROL_ARP_MASK; |
| reg |= port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT; |
| |
| return mv88e6xxx_g1_write(chip, GLOBAL_MONITOR_CONTROL, reg); |
| } |
| |
| static int mv88e6390_g1_monitor_write(struct mv88e6xxx_chip *chip, |
| u16 pointer, u8 data) |
| { |
| u16 reg; |
| |
| reg = GLOBAL_MONITOR_CONTROL_UPDATE | pointer | data; |
| |
| return mv88e6xxx_g1_write(chip, GLOBAL_MONITOR_CONTROL, reg); |
| } |
| |
| int mv88e6390_g1_set_egress_port(struct mv88e6xxx_chip *chip, int port) |
| { |
| int err; |
| |
| err = mv88e6390_g1_monitor_write(chip, GLOBAL_MONITOR_CONTROL_INGRESS, |
| port); |
| if (err) |
| return err; |
| |
| return mv88e6390_g1_monitor_write(chip, GLOBAL_MONITOR_CONTROL_EGRESS, |
| port); |
| } |
| |
| int mv88e6390_g1_set_cpu_port(struct mv88e6xxx_chip *chip, int port) |
| { |
| return mv88e6390_g1_monitor_write(chip, GLOBAL_MONITOR_CONTROL_CPU_DEST, |
| port); |
| } |
| |
| int mv88e6390_g1_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip) |
| { |
| int err; |
| |
| /* 01:c2:80:00:00:00:00-01:c2:80:00:00:00:07 are Management */ |
| err = mv88e6390_g1_monitor_write( |
| chip, GLOBAL_MONITOR_CONTROL_0180C280000000XLO, 0xff); |
| if (err) |
| return err; |
| |
| /* 01:c2:80:00:00:00:08-01:c2:80:00:00:00:0f are Management */ |
| err = mv88e6390_g1_monitor_write( |
| chip, GLOBAL_MONITOR_CONTROL_0180C280000000XHI, 0xff); |
| if (err) |
| return err; |
| |
| /* 01:c2:80:00:00:00:20-01:c2:80:00:00:00:27 are Management */ |
| err = mv88e6390_g1_monitor_write( |
| chip, GLOBAL_MONITOR_CONTROL_0180C280000002XLO, 0xff); |
| if (err) |
| return err; |
| |
| /* 01:c2:80:00:00:00:28-01:c2:80:00:00:00:2f are Management */ |
| return mv88e6390_g1_monitor_write( |
| chip, GLOBAL_MONITOR_CONTROL_0180C280000002XHI, 0xff); |
| } |
| |
| /* Offset 0x1c: Global Control 2 */ |
| |
| int mv88e6390_g1_stats_set_histogram(struct mv88e6xxx_chip *chip) |
| { |
| u16 val; |
| int err; |
| |
| err = mv88e6xxx_g1_read(chip, GLOBAL_CONTROL_2, &val); |
| if (err) |
| return err; |
| |
| val |= GLOBAL_CONTROL_2_HIST_RX_TX; |
| |
| err = mv88e6xxx_g1_write(chip, GLOBAL_CONTROL_2, val); |
| |
| return err; |
| } |
| |
| /* Offset 0x1d: Statistics Operation 2 */ |
| |
| int mv88e6xxx_g1_stats_wait(struct mv88e6xxx_chip *chip) |
| { |
| return mv88e6xxx_g1_wait(chip, GLOBAL_STATS_OP, GLOBAL_STATS_OP_BUSY); |
| } |
| |
| int mv88e6xxx_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port) |
| { |
| int err; |
| |
| /* Snapshot the hardware statistics counters for this port. */ |
| err = mv88e6xxx_g1_write(chip, GLOBAL_STATS_OP, |
| GLOBAL_STATS_OP_CAPTURE_PORT | |
| GLOBAL_STATS_OP_HIST_RX_TX | port); |
| if (err) |
| return err; |
| |
| /* Wait for the snapshotting to complete. */ |
| return mv88e6xxx_g1_stats_wait(chip); |
| } |
| |
| int mv88e6320_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port) |
| { |
| port = (port + 1) << 5; |
| |
| return mv88e6xxx_g1_stats_snapshot(chip, port); |
| } |
| |
| int mv88e6390_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port) |
| { |
| int err; |
| |
| port = (port + 1) << 5; |
| |
| /* Snapshot the hardware statistics counters for this port. */ |
| err = mv88e6xxx_g1_write(chip, GLOBAL_STATS_OP, |
| GLOBAL_STATS_OP_CAPTURE_PORT | port); |
| if (err) |
| return err; |
| |
| /* Wait for the snapshotting to complete. */ |
| return mv88e6xxx_g1_stats_wait(chip); |
| } |
| |
| void mv88e6xxx_g1_stats_read(struct mv88e6xxx_chip *chip, int stat, u32 *val) |
| { |
| u32 value; |
| u16 reg; |
| int err; |
| |
| *val = 0; |
| |
| err = mv88e6xxx_g1_write(chip, GLOBAL_STATS_OP, |
| GLOBAL_STATS_OP_READ_CAPTURED | stat); |
| if (err) |
| return; |
| |
| err = mv88e6xxx_g1_stats_wait(chip); |
| if (err) |
| return; |
| |
| err = mv88e6xxx_g1_read(chip, GLOBAL_STATS_COUNTER_32, ®); |
| if (err) |
| return; |
| |
| value = reg << 16; |
| |
| err = mv88e6xxx_g1_read(chip, GLOBAL_STATS_COUNTER_01, ®); |
| if (err) |
| return; |
| |
| *val = value | reg; |
| } |
