1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Marvell 88E6xxx Switch Global 2 Registers support
5 * Copyright (c) 2008 Marvell Semiconductor
7 * Copyright (c) 2016-2017 Savoir-faire Linux Inc.
8 * Vivien Didelot <vivien.didelot@savoirfairelinux.com>
11 #include <linux/bitfield.h>
12 #include <linux/interrupt.h>
13 #include <linux/irqdomain.h>
16 #include "global1.h" /* for MV88E6XXX_G1_STS_IRQ_DEVICE */
19 int mv88e6xxx_g2_read(struct mv88e6xxx_chip *chip, int reg, u16 *val)
21 return mv88e6xxx_read(chip, chip->info->global2_addr, reg, val);
24 int mv88e6xxx_g2_write(struct mv88e6xxx_chip *chip, int reg, u16 val)
26 return mv88e6xxx_write(chip, chip->info->global2_addr, reg, val);
29 int mv88e6xxx_g2_wait_bit(struct mv88e6xxx_chip *chip, int reg, int
32 return mv88e6xxx_wait_bit(chip, chip->info->global2_addr, reg,
36 /* Offset 0x00: Interrupt Source Register */
38 static int mv88e6xxx_g2_int_source(struct mv88e6xxx_chip *chip, u16 *src)
40 /* Read (and clear most of) the Interrupt Source bits */
41 return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_INT_SRC, src);
44 /* Offset 0x01: Interrupt Mask Register */
46 static int mv88e6xxx_g2_int_mask(struct mv88e6xxx_chip *chip, u16 mask)
48 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_INT_MASK, mask);
51 /* Offset 0x02: Management Enable 2x */
53 static int mv88e6xxx_g2_mgmt_enable_2x(struct mv88e6xxx_chip *chip, u16 en2x)
55 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_MGMT_EN_2X, en2x);
58 /* Offset 0x03: Management Enable 0x */
60 static int mv88e6xxx_g2_mgmt_enable_0x(struct mv88e6xxx_chip *chip, u16 en0x)
62 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_MGMT_EN_0X, en0x);
65 /* Offset 0x05: Switch Management Register */
67 static int mv88e6xxx_g2_switch_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip,
73 err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_SWITCH_MGMT, &val);
78 val |= MV88E6XXX_G2_SWITCH_MGMT_RSVD2CPU;
80 val &= ~MV88E6XXX_G2_SWITCH_MGMT_RSVD2CPU;
82 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SWITCH_MGMT, val);
85 int mv88e6185_g2_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
89 /* Consider the frames with reserved multicast destination
90 * addresses matching 01:80:c2:00:00:0x as MGMT.
92 err = mv88e6xxx_g2_mgmt_enable_0x(chip, 0xffff);
96 return mv88e6xxx_g2_switch_mgmt_rsvd2cpu(chip, true);
99 int mv88e6352_g2_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
103 /* Consider the frames with reserved multicast destination
104 * addresses matching 01:80:c2:00:00:2x as MGMT.
106 err = mv88e6xxx_g2_mgmt_enable_2x(chip, 0xffff);
110 return mv88e6185_g2_mgmt_rsvd2cpu(chip);
113 /* Offset 0x06: Device Mapping Table register */
115 int mv88e6xxx_g2_device_mapping_write(struct mv88e6xxx_chip *chip, int target,
118 u16 val = (target << 8) | (port & 0x1f);
119 /* Modern chips use 5 bits to define a device mapping port,
120 * but bit 4 is reserved on older chips, so it is safe to use.
123 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_DEVICE_MAPPING,
124 MV88E6XXX_G2_DEVICE_MAPPING_UPDATE | val);
127 /* Offset 0x07: Trunk Mask Table register */
129 int mv88e6xxx_g2_trunk_mask_write(struct mv88e6xxx_chip *chip, int num,
132 u16 val = (num << 12) | (mask & mv88e6xxx_port_mask(chip));
135 val |= MV88E6XXX_G2_TRUNK_MASK_HASH;
137 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_TRUNK_MASK,
138 MV88E6XXX_G2_TRUNK_MASK_UPDATE | val);
141 /* Offset 0x08: Trunk Mapping Table register */
143 int mv88e6xxx_g2_trunk_mapping_write(struct mv88e6xxx_chip *chip, int id,
146 const u16 port_mask = BIT(mv88e6xxx_num_ports(chip)) - 1;
147 u16 val = (id << 11) | (map & port_mask);
149 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_TRUNK_MAPPING,
150 MV88E6XXX_G2_TRUNK_MAPPING_UPDATE | val);
153 int mv88e6xxx_g2_trunk_clear(struct mv88e6xxx_chip *chip)
155 const u16 port_mask = BIT(mv88e6xxx_num_ports(chip)) - 1;
158 /* Clear all eight possible Trunk Mask vectors */
159 for (i = 0; i < 8; ++i) {
160 err = mv88e6xxx_g2_trunk_mask_write(chip, i, false, port_mask);
165 /* Clear all sixteen possible Trunk ID routing vectors */
166 for (i = 0; i < 16; ++i) {
167 err = mv88e6xxx_g2_trunk_mapping_write(chip, i, 0);
175 /* Offset 0x09: Ingress Rate Command register
176 * Offset 0x0A: Ingress Rate Data register
179 static int mv88e6xxx_g2_irl_wait(struct mv88e6xxx_chip *chip)
181 int bit = __bf_shf(MV88E6XXX_G2_IRL_CMD_BUSY);
183 return mv88e6xxx_g2_wait_bit(chip, MV88E6XXX_G2_IRL_CMD, bit, 0);
186 static int mv88e6xxx_g2_irl_op(struct mv88e6xxx_chip *chip, u16 op, int port,
191 err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_IRL_CMD,
192 MV88E6XXX_G2_IRL_CMD_BUSY | op | (port << 8) |
197 return mv88e6xxx_g2_irl_wait(chip);
200 int mv88e6352_g2_irl_init_all(struct mv88e6xxx_chip *chip, int port)
202 return mv88e6xxx_g2_irl_op(chip, MV88E6352_G2_IRL_CMD_OP_INIT_ALL, port,
206 int mv88e6390_g2_irl_init_all(struct mv88e6xxx_chip *chip, int port)
208 return mv88e6xxx_g2_irl_op(chip, MV88E6390_G2_IRL_CMD_OP_INIT_ALL, port,
212 /* Offset 0x0B: Cross-chip Port VLAN (Addr) Register
213 * Offset 0x0C: Cross-chip Port VLAN Data Register
216 static int mv88e6xxx_g2_pvt_op_wait(struct mv88e6xxx_chip *chip)
218 int bit = __bf_shf(MV88E6XXX_G2_PVT_ADDR_BUSY);
220 return mv88e6xxx_g2_wait_bit(chip, MV88E6XXX_G2_PVT_ADDR, bit, 0);
223 static int mv88e6xxx_g2_pvt_op(struct mv88e6xxx_chip *chip, int src_dev,
224 int src_port, u16 op)
228 /* 9-bit Cross-chip PVT pointer: with MV88E6XXX_G2_MISC_5_BIT_PORT
229 * cleared, source device is 5-bit, source port is 4-bit.
231 op |= MV88E6XXX_G2_PVT_ADDR_BUSY;
232 op |= (src_dev & 0x1f) << 4;
233 op |= (src_port & 0xf);
235 err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_PVT_ADDR, op);
239 return mv88e6xxx_g2_pvt_op_wait(chip);
242 int mv88e6xxx_g2_pvt_read(struct mv88e6xxx_chip *chip, int src_dev,
243 int src_port, u16 *data)
247 err = mv88e6xxx_g2_pvt_op_wait(chip);
251 err = mv88e6xxx_g2_pvt_op(chip, src_dev, src_port,
252 MV88E6XXX_G2_PVT_ADDR_OP_READ);
256 return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_PVT_DATA, data);
259 int mv88e6xxx_g2_pvt_write(struct mv88e6xxx_chip *chip, int src_dev,
260 int src_port, u16 data)
264 err = mv88e6xxx_g2_pvt_op_wait(chip);
268 err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_PVT_DATA, data);
272 return mv88e6xxx_g2_pvt_op(chip, src_dev, src_port,
273 MV88E6XXX_G2_PVT_ADDR_OP_WRITE_PVLAN);
276 /* Offset 0x0D: Switch MAC/WoL/WoF register */
278 static int mv88e6xxx_g2_switch_mac_write(struct mv88e6xxx_chip *chip,
279 unsigned int pointer, u8 data)
281 u16 val = (pointer << 8) | data;
283 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SWITCH_MAC,
284 MV88E6XXX_G2_SWITCH_MAC_UPDATE | val);
287 int mv88e6xxx_g2_set_switch_mac(struct mv88e6xxx_chip *chip, u8 *addr)
291 for (i = 0; i < 6; i++) {
292 err = mv88e6xxx_g2_switch_mac_write(chip, i, addr[i]);
300 /* Offset 0x0E: ATU Statistics */
302 int mv88e6xxx_g2_atu_stats_set(struct mv88e6xxx_chip *chip, u16 kind, u16 bin)
304 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_ATU_STATS,
308 int mv88e6xxx_g2_atu_stats_get(struct mv88e6xxx_chip *chip, u16 *stats)
310 return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_ATU_STATS, stats);
313 /* Offset 0x0F: Priority Override Table */
315 static int mv88e6xxx_g2_pot_write(struct mv88e6xxx_chip *chip, int pointer,
318 u16 val = (pointer << 8) | (data & 0x7);
320 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_PRIO_OVERRIDE,
321 MV88E6XXX_G2_PRIO_OVERRIDE_UPDATE | val);
324 int mv88e6xxx_g2_pot_clear(struct mv88e6xxx_chip *chip)
328 /* Clear all sixteen possible Priority Override entries */
329 for (i = 0; i < 16; i++) {
330 err = mv88e6xxx_g2_pot_write(chip, i, 0);
338 /* Offset 0x14: EEPROM Command
339 * Offset 0x15: EEPROM Data (for 16-bit data access)
340 * Offset 0x15: EEPROM Addr (for 8-bit data access)
343 static int mv88e6xxx_g2_eeprom_wait(struct mv88e6xxx_chip *chip)
345 int bit = __bf_shf(MV88E6XXX_G2_EEPROM_CMD_BUSY);
348 err = mv88e6xxx_g2_wait_bit(chip, MV88E6XXX_G2_EEPROM_CMD, bit, 0);
352 bit = __bf_shf(MV88E6XXX_G2_EEPROM_CMD_RUNNING);
354 return mv88e6xxx_g2_wait_bit(chip, MV88E6XXX_G2_EEPROM_CMD, bit, 0);
357 static int mv88e6xxx_g2_eeprom_cmd(struct mv88e6xxx_chip *chip, u16 cmd)
361 err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_EEPROM_CMD,
362 MV88E6XXX_G2_EEPROM_CMD_BUSY | cmd);
366 return mv88e6xxx_g2_eeprom_wait(chip);
369 static int mv88e6xxx_g2_eeprom_read8(struct mv88e6xxx_chip *chip,
372 u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_READ;
375 err = mv88e6xxx_g2_eeprom_wait(chip);
379 err = mv88e6xxx_g2_write(chip, MV88E6390_G2_EEPROM_ADDR, addr);
383 err = mv88e6xxx_g2_eeprom_cmd(chip, cmd);
387 err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_EEPROM_CMD, &cmd);
396 static int mv88e6xxx_g2_eeprom_write8(struct mv88e6xxx_chip *chip,
399 u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_WRITE |
400 MV88E6XXX_G2_EEPROM_CMD_WRITE_EN;
403 err = mv88e6xxx_g2_eeprom_wait(chip);
407 err = mv88e6xxx_g2_write(chip, MV88E6390_G2_EEPROM_ADDR, addr);
411 return mv88e6xxx_g2_eeprom_cmd(chip, cmd | data);
414 static int mv88e6xxx_g2_eeprom_read16(struct mv88e6xxx_chip *chip,
417 u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_READ | addr;
420 err = mv88e6xxx_g2_eeprom_wait(chip);
424 err = mv88e6xxx_g2_eeprom_cmd(chip, cmd);
428 return mv88e6xxx_g2_read(chip, MV88E6352_G2_EEPROM_DATA, data);
431 static int mv88e6xxx_g2_eeprom_write16(struct mv88e6xxx_chip *chip,
434 u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_WRITE | addr;
437 err = mv88e6xxx_g2_eeprom_wait(chip);
441 err = mv88e6xxx_g2_write(chip, MV88E6352_G2_EEPROM_DATA, data);
445 return mv88e6xxx_g2_eeprom_cmd(chip, cmd);
448 int mv88e6xxx_g2_get_eeprom8(struct mv88e6xxx_chip *chip,
449 struct ethtool_eeprom *eeprom, u8 *data)
451 unsigned int offset = eeprom->offset;
452 unsigned int len = eeprom->len;
458 err = mv88e6xxx_g2_eeprom_read8(chip, offset, data);
471 int mv88e6xxx_g2_set_eeprom8(struct mv88e6xxx_chip *chip,
472 struct ethtool_eeprom *eeprom, u8 *data)
474 unsigned int offset = eeprom->offset;
475 unsigned int len = eeprom->len;
481 err = mv88e6xxx_g2_eeprom_write8(chip, offset, *data);
494 int mv88e6xxx_g2_get_eeprom16(struct mv88e6xxx_chip *chip,
495 struct ethtool_eeprom *eeprom, u8 *data)
497 unsigned int offset = eeprom->offset;
498 unsigned int len = eeprom->len;
505 err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
509 *data++ = (val >> 8) & 0xff;
517 err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
521 *data++ = val & 0xff;
522 *data++ = (val >> 8) & 0xff;
530 err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
534 *data++ = val & 0xff;
544 int mv88e6xxx_g2_set_eeprom16(struct mv88e6xxx_chip *chip,
545 struct ethtool_eeprom *eeprom, u8 *data)
547 unsigned int offset = eeprom->offset;
548 unsigned int len = eeprom->len;
552 /* Ensure the RO WriteEn bit is set */
553 err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_EEPROM_CMD, &val);
557 if (!(val & MV88E6XXX_G2_EEPROM_CMD_WRITE_EN))
563 err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
567 val = (*data++ << 8) | (val & 0xff);
569 err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
582 err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
592 err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
596 val = (val & 0xff00) | *data++;
598 err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
610 /* Offset 0x18: SMI PHY Command Register
611 * Offset 0x19: SMI PHY Data Register
614 static int mv88e6xxx_g2_smi_phy_wait(struct mv88e6xxx_chip *chip)
616 int bit = __bf_shf(MV88E6XXX_G2_SMI_PHY_CMD_BUSY);
618 return mv88e6xxx_g2_wait_bit(chip, MV88E6XXX_G2_SMI_PHY_CMD, bit, 0);
621 static int mv88e6xxx_g2_smi_phy_cmd(struct mv88e6xxx_chip *chip, u16 cmd)
625 err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_CMD,
626 MV88E6XXX_G2_SMI_PHY_CMD_BUSY | cmd);
630 return mv88e6xxx_g2_smi_phy_wait(chip);
633 static int mv88e6xxx_g2_smi_phy_access(struct mv88e6xxx_chip *chip,
634 bool external, bool c45, u16 op, int dev,
640 cmd |= MV88E6390_G2_SMI_PHY_CMD_FUNC_EXTERNAL;
642 cmd |= MV88E6390_G2_SMI_PHY_CMD_FUNC_INTERNAL; /* empty mask */
645 cmd |= MV88E6XXX_G2_SMI_PHY_CMD_MODE_45; /* empty mask */
647 cmd |= MV88E6XXX_G2_SMI_PHY_CMD_MODE_22;
649 dev <<= __bf_shf(MV88E6XXX_G2_SMI_PHY_CMD_DEV_ADDR_MASK);
650 cmd |= dev & MV88E6XXX_G2_SMI_PHY_CMD_DEV_ADDR_MASK;
651 cmd |= reg & MV88E6XXX_G2_SMI_PHY_CMD_REG_ADDR_MASK;
653 return mv88e6xxx_g2_smi_phy_cmd(chip, cmd);
656 static int mv88e6xxx_g2_smi_phy_access_c22(struct mv88e6xxx_chip *chip,
657 bool external, u16 op, int dev,
660 return mv88e6xxx_g2_smi_phy_access(chip, external, false, op, dev, reg);
663 /* IEEE 802.3 Clause 22 Read Data Register */
664 static int mv88e6xxx_g2_smi_phy_read_data_c22(struct mv88e6xxx_chip *chip,
665 bool external, int dev, int reg,
668 u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_22_READ_DATA;
671 err = mv88e6xxx_g2_smi_phy_wait(chip);
675 err = mv88e6xxx_g2_smi_phy_access_c22(chip, external, op, dev, reg);
679 return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
682 /* IEEE 802.3 Clause 22 Write Data Register */
683 static int mv88e6xxx_g2_smi_phy_write_data_c22(struct mv88e6xxx_chip *chip,
684 bool external, int dev, int reg,
687 u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_22_WRITE_DATA;
690 err = mv88e6xxx_g2_smi_phy_wait(chip);
694 err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
698 return mv88e6xxx_g2_smi_phy_access_c22(chip, external, op, dev, reg);
701 static int mv88e6xxx_g2_smi_phy_access_c45(struct mv88e6xxx_chip *chip,
702 bool external, u16 op, int port,
705 return mv88e6xxx_g2_smi_phy_access(chip, external, true, op, port, dev);
708 /* IEEE 802.3 Clause 45 Write Address Register */
709 static int mv88e6xxx_g2_smi_phy_write_addr_c45(struct mv88e6xxx_chip *chip,
710 bool external, int port, int dev,
713 u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_45_WRITE_ADDR;
716 err = mv88e6xxx_g2_smi_phy_wait(chip);
720 err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_DATA, addr);
724 return mv88e6xxx_g2_smi_phy_access_c45(chip, external, op, port, dev);
727 /* IEEE 802.3 Clause 45 Read Data Register */
728 static int mv88e6xxx_g2_smi_phy_read_data_c45(struct mv88e6xxx_chip *chip,
729 bool external, int port, int dev,
732 u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_45_READ_DATA;
735 err = mv88e6xxx_g2_smi_phy_access_c45(chip, external, op, port, dev);
739 return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
742 static int _mv88e6xxx_g2_smi_phy_read_c45(struct mv88e6xxx_chip *chip,
743 bool external, int port, int devad,
748 err = mv88e6xxx_g2_smi_phy_write_addr_c45(chip, external, port, devad,
753 return mv88e6xxx_g2_smi_phy_read_data_c45(chip, external, port, devad,
757 /* IEEE 802.3 Clause 45 Write Data Register */
758 static int mv88e6xxx_g2_smi_phy_write_data_c45(struct mv88e6xxx_chip *chip,
759 bool external, int port, int dev,
762 u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_45_WRITE_DATA;
765 err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
769 return mv88e6xxx_g2_smi_phy_access_c45(chip, external, op, port, dev);
772 static int _mv88e6xxx_g2_smi_phy_write_c45(struct mv88e6xxx_chip *chip,
773 bool external, int port, int devad,
778 err = mv88e6xxx_g2_smi_phy_write_addr_c45(chip, external, port, devad,
783 return mv88e6xxx_g2_smi_phy_write_data_c45(chip, external, port, devad,
787 int mv88e6xxx_g2_smi_phy_read_c22(struct mv88e6xxx_chip *chip,
789 int addr, int reg, u16 *val)
791 struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
792 bool external = mdio_bus->external;
794 return mv88e6xxx_g2_smi_phy_read_data_c22(chip, external, addr, reg,
798 int mv88e6xxx_g2_smi_phy_read_c45(struct mv88e6xxx_chip *chip,
799 struct mii_bus *bus, int addr, int devad,
802 struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
803 bool external = mdio_bus->external;
805 return _mv88e6xxx_g2_smi_phy_read_c45(chip, external, addr, devad, reg,
809 int mv88e6xxx_g2_smi_phy_write_c22(struct mv88e6xxx_chip *chip,
810 struct mii_bus *bus, int addr, int reg,
813 struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
814 bool external = mdio_bus->external;
816 return mv88e6xxx_g2_smi_phy_write_data_c22(chip, external, addr, reg,
820 int mv88e6xxx_g2_smi_phy_write_c45(struct mv88e6xxx_chip *chip,
821 struct mii_bus *bus, int addr, int devad,
824 struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
825 bool external = mdio_bus->external;
827 return _mv88e6xxx_g2_smi_phy_write_c45(chip, external, addr, devad, reg,
831 /* Offset 0x1B: Watchdog Control */
832 static int mv88e6097_watchdog_action(struct mv88e6xxx_chip *chip, int irq)
836 mv88e6xxx_g2_read(chip, MV88E6352_G2_WDOG_CTL, ®);
838 dev_info(chip->dev, "Watchdog event: 0x%04x", reg);
843 static void mv88e6097_watchdog_free(struct mv88e6xxx_chip *chip)
847 mv88e6xxx_g2_read(chip, MV88E6352_G2_WDOG_CTL, ®);
849 reg &= ~(MV88E6352_G2_WDOG_CTL_EGRESS_ENABLE |
850 MV88E6352_G2_WDOG_CTL_QC_ENABLE);
852 mv88e6xxx_g2_write(chip, MV88E6352_G2_WDOG_CTL, reg);
855 static int mv88e6097_watchdog_setup(struct mv88e6xxx_chip *chip)
857 return mv88e6xxx_g2_write(chip, MV88E6352_G2_WDOG_CTL,
858 MV88E6352_G2_WDOG_CTL_EGRESS_ENABLE |
859 MV88E6352_G2_WDOG_CTL_QC_ENABLE |
860 MV88E6352_G2_WDOG_CTL_SWRESET);
863 const struct mv88e6xxx_irq_ops mv88e6097_watchdog_ops = {
864 .irq_action = mv88e6097_watchdog_action,
865 .irq_setup = mv88e6097_watchdog_setup,
866 .irq_free = mv88e6097_watchdog_free,
869 static void mv88e6250_watchdog_free(struct mv88e6xxx_chip *chip)
873 mv88e6xxx_g2_read(chip, MV88E6250_G2_WDOG_CTL, ®);
875 reg &= ~(MV88E6250_G2_WDOG_CTL_EGRESS_ENABLE |
876 MV88E6250_G2_WDOG_CTL_QC_ENABLE);
878 mv88e6xxx_g2_write(chip, MV88E6250_G2_WDOG_CTL, reg);
881 static int mv88e6250_watchdog_setup(struct mv88e6xxx_chip *chip)
883 return mv88e6xxx_g2_write(chip, MV88E6250_G2_WDOG_CTL,
884 MV88E6250_G2_WDOG_CTL_EGRESS_ENABLE |
885 MV88E6250_G2_WDOG_CTL_QC_ENABLE |
886 MV88E6250_G2_WDOG_CTL_SWRESET);
889 const struct mv88e6xxx_irq_ops mv88e6250_watchdog_ops = {
890 .irq_action = mv88e6097_watchdog_action,
891 .irq_setup = mv88e6250_watchdog_setup,
892 .irq_free = mv88e6250_watchdog_free,
895 static int mv88e6390_watchdog_setup(struct mv88e6xxx_chip *chip)
897 return mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
898 MV88E6390_G2_WDOG_CTL_UPDATE |
899 MV88E6390_G2_WDOG_CTL_PTR_INT_ENABLE |
900 MV88E6390_G2_WDOG_CTL_CUT_THROUGH |
901 MV88E6390_G2_WDOG_CTL_QUEUE_CONTROLLER |
902 MV88E6390_G2_WDOG_CTL_EGRESS |
903 MV88E6390_G2_WDOG_CTL_FORCE_IRQ);
906 static int mv88e6390_watchdog_action(struct mv88e6xxx_chip *chip, int irq)
910 mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
911 MV88E6390_G2_WDOG_CTL_PTR_EVENT);
912 mv88e6xxx_g2_read(chip, MV88E6390_G2_WDOG_CTL, ®);
914 dev_info(chip->dev, "Watchdog event: 0x%04x",
915 reg & MV88E6390_G2_WDOG_CTL_DATA_MASK);
917 mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
918 MV88E6390_G2_WDOG_CTL_PTR_HISTORY);
919 mv88e6xxx_g2_read(chip, MV88E6390_G2_WDOG_CTL, ®);
921 dev_info(chip->dev, "Watchdog history: 0x%04x",
922 reg & MV88E6390_G2_WDOG_CTL_DATA_MASK);
924 /* Trigger a software reset to try to recover the switch */
925 if (chip->info->ops->reset)
926 chip->info->ops->reset(chip);
928 mv88e6390_watchdog_setup(chip);
933 static void mv88e6390_watchdog_free(struct mv88e6xxx_chip *chip)
935 mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
936 MV88E6390_G2_WDOG_CTL_UPDATE |
937 MV88E6390_G2_WDOG_CTL_PTR_INT_ENABLE);
940 const struct mv88e6xxx_irq_ops mv88e6390_watchdog_ops = {
941 .irq_action = mv88e6390_watchdog_action,
942 .irq_setup = mv88e6390_watchdog_setup,
943 .irq_free = mv88e6390_watchdog_free,
946 static int mv88e6393x_watchdog_action(struct mv88e6xxx_chip *chip, int irq)
948 mv88e6390_watchdog_action(chip, irq);
950 /* Fix for clearing the force WD event bit.
951 * Unreleased erratum on mv88e6393x.
953 mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
954 MV88E6390_G2_WDOG_CTL_UPDATE |
955 MV88E6390_G2_WDOG_CTL_PTR_EVENT);
960 const struct mv88e6xxx_irq_ops mv88e6393x_watchdog_ops = {
961 .irq_action = mv88e6393x_watchdog_action,
962 .irq_setup = mv88e6390_watchdog_setup,
963 .irq_free = mv88e6390_watchdog_free,
966 static irqreturn_t mv88e6xxx_g2_watchdog_thread_fn(int irq, void *dev_id)
968 struct mv88e6xxx_chip *chip = dev_id;
969 irqreturn_t ret = IRQ_NONE;
971 mv88e6xxx_reg_lock(chip);
972 if (chip->info->ops->watchdog_ops->irq_action)
973 ret = chip->info->ops->watchdog_ops->irq_action(chip, irq);
974 mv88e6xxx_reg_unlock(chip);
979 static void mv88e6xxx_g2_watchdog_free(struct mv88e6xxx_chip *chip)
981 mv88e6xxx_reg_lock(chip);
982 if (chip->info->ops->watchdog_ops->irq_free)
983 chip->info->ops->watchdog_ops->irq_free(chip);
984 mv88e6xxx_reg_unlock(chip);
986 free_irq(chip->watchdog_irq, chip);
987 irq_dispose_mapping(chip->watchdog_irq);
990 static int mv88e6xxx_g2_watchdog_setup(struct mv88e6xxx_chip *chip)
994 chip->watchdog_irq = irq_find_mapping(chip->g2_irq.domain,
995 MV88E6XXX_G2_INT_SOURCE_WATCHDOG);
996 if (chip->watchdog_irq < 0)
997 return chip->watchdog_irq;
999 snprintf(chip->watchdog_irq_name, sizeof(chip->watchdog_irq_name),
1000 "mv88e6xxx-%s-watchdog", dev_name(chip->dev));
1002 err = request_threaded_irq(chip->watchdog_irq, NULL,
1003 mv88e6xxx_g2_watchdog_thread_fn,
1004 IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
1005 chip->watchdog_irq_name, chip);
1009 mv88e6xxx_reg_lock(chip);
1010 if (chip->info->ops->watchdog_ops->irq_setup)
1011 err = chip->info->ops->watchdog_ops->irq_setup(chip);
1012 mv88e6xxx_reg_unlock(chip);
1017 /* Offset 0x1D: Misc Register */
1019 static int mv88e6xxx_g2_misc_5_bit_port(struct mv88e6xxx_chip *chip,
1025 err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_MISC, &val);
1030 val |= MV88E6XXX_G2_MISC_5_BIT_PORT;
1032 val &= ~MV88E6XXX_G2_MISC_5_BIT_PORT;
1034 return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_MISC, val);
1037 int mv88e6xxx_g2_misc_4_bit_port(struct mv88e6xxx_chip *chip)
1039 return mv88e6xxx_g2_misc_5_bit_port(chip, false);
1042 static void mv88e6xxx_g2_irq_mask(struct irq_data *d)
1044 struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
1045 unsigned int n = d->hwirq;
1047 chip->g2_irq.masked |= (1 << n);
1050 static void mv88e6xxx_g2_irq_unmask(struct irq_data *d)
1052 struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
1053 unsigned int n = d->hwirq;
1055 chip->g2_irq.masked &= ~(1 << n);
1058 static irqreturn_t mv88e6xxx_g2_irq_thread_fn(int irq, void *dev_id)
1060 struct mv88e6xxx_chip *chip = dev_id;
1061 unsigned int nhandled = 0;
1062 unsigned int sub_irq;
1067 mv88e6xxx_reg_lock(chip);
1068 err = mv88e6xxx_g2_int_source(chip, ®);
1069 mv88e6xxx_reg_unlock(chip);
1073 for (n = 0; n < 16; ++n) {
1074 if (reg & (1 << n)) {
1075 sub_irq = irq_find_mapping(chip->g2_irq.domain, n);
1076 handle_nested_irq(sub_irq);
1081 return (nhandled > 0 ? IRQ_HANDLED : IRQ_NONE);
1084 static void mv88e6xxx_g2_irq_bus_lock(struct irq_data *d)
1086 struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
1088 mv88e6xxx_reg_lock(chip);
1091 static void mv88e6xxx_g2_irq_bus_sync_unlock(struct irq_data *d)
1093 struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
1096 err = mv88e6xxx_g2_int_mask(chip, ~chip->g2_irq.masked);
1098 dev_err(chip->dev, "failed to mask interrupts\n");
1100 mv88e6xxx_reg_unlock(chip);
1103 static const struct irq_chip mv88e6xxx_g2_irq_chip = {
1104 .name = "mv88e6xxx-g2",
1105 .irq_mask = mv88e6xxx_g2_irq_mask,
1106 .irq_unmask = mv88e6xxx_g2_irq_unmask,
1107 .irq_bus_lock = mv88e6xxx_g2_irq_bus_lock,
1108 .irq_bus_sync_unlock = mv88e6xxx_g2_irq_bus_sync_unlock,
1111 static int mv88e6xxx_g2_irq_domain_map(struct irq_domain *d,
1113 irq_hw_number_t hwirq)
1115 struct mv88e6xxx_chip *chip = d->host_data;
1117 irq_set_chip_data(irq, d->host_data);
1118 irq_set_chip_and_handler(irq, &chip->g2_irq.chip, handle_level_irq);
1119 irq_set_noprobe(irq);
1124 static const struct irq_domain_ops mv88e6xxx_g2_irq_domain_ops = {
1125 .map = mv88e6xxx_g2_irq_domain_map,
1126 .xlate = irq_domain_xlate_twocell,
1129 void mv88e6xxx_g2_irq_free(struct mv88e6xxx_chip *chip)
1133 mv88e6xxx_g2_watchdog_free(chip);
1135 free_irq(chip->device_irq, chip);
1136 irq_dispose_mapping(chip->device_irq);
1138 for (irq = 0; irq < 16; irq++) {
1139 virq = irq_find_mapping(chip->g2_irq.domain, irq);
1140 irq_dispose_mapping(virq);
1143 irq_domain_remove(chip->g2_irq.domain);
1146 int mv88e6xxx_g2_irq_setup(struct mv88e6xxx_chip *chip)
1150 chip->g2_irq.masked = ~0;
1151 mv88e6xxx_reg_lock(chip);
1152 err = mv88e6xxx_g2_int_mask(chip, ~chip->g2_irq.masked);
1153 mv88e6xxx_reg_unlock(chip);
1157 chip->g2_irq.domain = irq_domain_add_simple(
1158 chip->dev->of_node, 16, 0, &mv88e6xxx_g2_irq_domain_ops, chip);
1159 if (!chip->g2_irq.domain)
1162 for (irq = 0; irq < 16; irq++)
1163 irq_create_mapping(chip->g2_irq.domain, irq);
1165 chip->g2_irq.chip = mv88e6xxx_g2_irq_chip;
1167 chip->device_irq = irq_find_mapping(chip->g1_irq.domain,
1168 MV88E6XXX_G1_STS_IRQ_DEVICE);
1169 if (chip->device_irq < 0) {
1170 err = chip->device_irq;
1174 snprintf(chip->device_irq_name, sizeof(chip->device_irq_name),
1175 "mv88e6xxx-%s-g2", dev_name(chip->dev));
1177 err = request_threaded_irq(chip->device_irq, NULL,
1178 mv88e6xxx_g2_irq_thread_fn,
1179 IRQF_ONESHOT, chip->device_irq_name, chip);
1183 return mv88e6xxx_g2_watchdog_setup(chip);
1186 for (irq = 0; irq < 16; irq++) {
1187 virq = irq_find_mapping(chip->g2_irq.domain, irq);
1188 irq_dispose_mapping(virq);
1191 irq_domain_remove(chip->g2_irq.domain);
1196 int mv88e6xxx_g2_irq_mdio_setup(struct mv88e6xxx_chip *chip,
1197 struct mii_bus *bus)
1199 int phy_start = chip->info->internal_phys_offset;
1200 int phy_end = chip->info->internal_phys_offset +
1201 chip->info->num_internal_phys;
1204 for (phy = phy_start; phy < phy_end; phy++) {
1205 irq = irq_find_mapping(chip->g2_irq.domain, phy);
1209 bus->irq[chip->info->phy_base_addr + phy] = irq;
1214 void mv88e6xxx_g2_irq_mdio_free(struct mv88e6xxx_chip *chip,
1215 struct mii_bus *bus)