1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2009 Felix Fietkau <nbd@nbd.name>
4 * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (c) 2015, 2019, The Linux Foundation. All rights reserved.
6 * Copyright (c) 2016 John Crispin <john@phrozen.org>
9 #include <linux/module.h>
10 #include <linux/phy.h>
11 #include <linux/netdevice.h>
13 #include <linux/of_net.h>
14 #include <linux/of_mdio.h>
15 #include <linux/of_platform.h>
16 #include <linux/if_bridge.h>
17 #include <linux/mdio.h>
18 #include <linux/phylink.h>
19 #include <linux/gpio/consumer.h>
20 #include <linux/etherdevice.h>
24 #define MIB_DESC(_s, _o, _n) \
31 static const struct qca8k_mib_desc ar8327_mib[] = {
32 MIB_DESC(1, 0x00, "RxBroad"),
33 MIB_DESC(1, 0x04, "RxPause"),
34 MIB_DESC(1, 0x08, "RxMulti"),
35 MIB_DESC(1, 0x0c, "RxFcsErr"),
36 MIB_DESC(1, 0x10, "RxAlignErr"),
37 MIB_DESC(1, 0x14, "RxRunt"),
38 MIB_DESC(1, 0x18, "RxFragment"),
39 MIB_DESC(1, 0x1c, "Rx64Byte"),
40 MIB_DESC(1, 0x20, "Rx128Byte"),
41 MIB_DESC(1, 0x24, "Rx256Byte"),
42 MIB_DESC(1, 0x28, "Rx512Byte"),
43 MIB_DESC(1, 0x2c, "Rx1024Byte"),
44 MIB_DESC(1, 0x30, "Rx1518Byte"),
45 MIB_DESC(1, 0x34, "RxMaxByte"),
46 MIB_DESC(1, 0x38, "RxTooLong"),
47 MIB_DESC(2, 0x3c, "RxGoodByte"),
48 MIB_DESC(2, 0x44, "RxBadByte"),
49 MIB_DESC(1, 0x4c, "RxOverFlow"),
50 MIB_DESC(1, 0x50, "Filtered"),
51 MIB_DESC(1, 0x54, "TxBroad"),
52 MIB_DESC(1, 0x58, "TxPause"),
53 MIB_DESC(1, 0x5c, "TxMulti"),
54 MIB_DESC(1, 0x60, "TxUnderRun"),
55 MIB_DESC(1, 0x64, "Tx64Byte"),
56 MIB_DESC(1, 0x68, "Tx128Byte"),
57 MIB_DESC(1, 0x6c, "Tx256Byte"),
58 MIB_DESC(1, 0x70, "Tx512Byte"),
59 MIB_DESC(1, 0x74, "Tx1024Byte"),
60 MIB_DESC(1, 0x78, "Tx1518Byte"),
61 MIB_DESC(1, 0x7c, "TxMaxByte"),
62 MIB_DESC(1, 0x80, "TxOverSize"),
63 MIB_DESC(2, 0x84, "TxByte"),
64 MIB_DESC(1, 0x8c, "TxCollision"),
65 MIB_DESC(1, 0x90, "TxAbortCol"),
66 MIB_DESC(1, 0x94, "TxMultiCol"),
67 MIB_DESC(1, 0x98, "TxSingleCol"),
68 MIB_DESC(1, 0x9c, "TxExcDefer"),
69 MIB_DESC(1, 0xa0, "TxDefer"),
70 MIB_DESC(1, 0xa4, "TxLateCol"),
73 /* The 32bit switch registers are accessed indirectly. To achieve this we need
74 * to set the page of the register. Track the last page that was set to reduce
77 static u16 qca8k_current_page = 0xffff;
80 qca8k_split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
89 *page = regaddr & 0x3ff;
93 qca8k_mii_read32(struct mii_bus *bus, int phy_id, u32 regnum, u32 *val)
97 ret = bus->read(bus, phy_id, regnum);
100 ret = bus->read(bus, phy_id, regnum + 1);
105 dev_err_ratelimited(&bus->dev,
106 "failed to read qca8k 32bit register\n");
115 qca8k_mii_write32(struct mii_bus *bus, int phy_id, u32 regnum, u32 val)
121 hi = (u16)(val >> 16);
123 ret = bus->write(bus, phy_id, regnum, lo);
125 ret = bus->write(bus, phy_id, regnum + 1, hi);
127 dev_err_ratelimited(&bus->dev,
128 "failed to write qca8k 32bit register\n");
132 qca8k_set_page(struct mii_bus *bus, u16 page)
136 if (page == qca8k_current_page)
139 ret = bus->write(bus, 0x18, 0, page);
141 dev_err_ratelimited(&bus->dev,
142 "failed to set qca8k page\n");
146 qca8k_current_page = page;
147 usleep_range(1000, 2000);
152 qca8k_read(struct qca8k_priv *priv, u32 reg, u32 *val)
154 struct mii_bus *bus = priv->bus;
158 qca8k_split_addr(reg, &r1, &r2, &page);
160 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
162 ret = qca8k_set_page(bus, page);
166 ret = qca8k_mii_read32(bus, 0x10 | r2, r1, val);
169 mutex_unlock(&bus->mdio_lock);
174 qca8k_write(struct qca8k_priv *priv, u32 reg, u32 val)
176 struct mii_bus *bus = priv->bus;
180 qca8k_split_addr(reg, &r1, &r2, &page);
182 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
184 ret = qca8k_set_page(bus, page);
188 qca8k_mii_write32(bus, 0x10 | r2, r1, val);
191 mutex_unlock(&bus->mdio_lock);
196 qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val)
198 struct mii_bus *bus = priv->bus;
203 qca8k_split_addr(reg, &r1, &r2, &page);
205 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
207 ret = qca8k_set_page(bus, page);
211 ret = qca8k_mii_read32(bus, 0x10 | r2, r1, &val);
217 qca8k_mii_write32(bus, 0x10 | r2, r1, val);
220 mutex_unlock(&bus->mdio_lock);
226 qca8k_reg_set(struct qca8k_priv *priv, u32 reg, u32 val)
228 return qca8k_rmw(priv, reg, 0, val);
232 qca8k_reg_clear(struct qca8k_priv *priv, u32 reg, u32 val)
234 return qca8k_rmw(priv, reg, val, 0);
238 qca8k_regmap_read(void *ctx, uint32_t reg, uint32_t *val)
240 struct qca8k_priv *priv = (struct qca8k_priv *)ctx;
242 return qca8k_read(priv, reg, val);
246 qca8k_regmap_write(void *ctx, uint32_t reg, uint32_t val)
248 struct qca8k_priv *priv = (struct qca8k_priv *)ctx;
250 return qca8k_write(priv, reg, val);
253 static const struct regmap_range qca8k_readable_ranges[] = {
254 regmap_reg_range(0x0000, 0x00e4), /* Global control */
255 regmap_reg_range(0x0100, 0x0168), /* EEE control */
256 regmap_reg_range(0x0200, 0x0270), /* Parser control */
257 regmap_reg_range(0x0400, 0x0454), /* ACL */
258 regmap_reg_range(0x0600, 0x0718), /* Lookup */
259 regmap_reg_range(0x0800, 0x0b70), /* QM */
260 regmap_reg_range(0x0c00, 0x0c80), /* PKT */
261 regmap_reg_range(0x0e00, 0x0e98), /* L3 */
262 regmap_reg_range(0x1000, 0x10ac), /* MIB - Port0 */
263 regmap_reg_range(0x1100, 0x11ac), /* MIB - Port1 */
264 regmap_reg_range(0x1200, 0x12ac), /* MIB - Port2 */
265 regmap_reg_range(0x1300, 0x13ac), /* MIB - Port3 */
266 regmap_reg_range(0x1400, 0x14ac), /* MIB - Port4 */
267 regmap_reg_range(0x1500, 0x15ac), /* MIB - Port5 */
268 regmap_reg_range(0x1600, 0x16ac), /* MIB - Port6 */
272 static const struct regmap_access_table qca8k_readable_table = {
273 .yes_ranges = qca8k_readable_ranges,
274 .n_yes_ranges = ARRAY_SIZE(qca8k_readable_ranges),
277 static struct regmap_config qca8k_regmap_config = {
281 .max_register = 0x16ac, /* end MIB - Port6 range */
282 .reg_read = qca8k_regmap_read,
283 .reg_write = qca8k_regmap_write,
284 .rd_table = &qca8k_readable_table,
288 qca8k_busy_wait(struct qca8k_priv *priv, u32 reg, u32 mask)
293 ret = read_poll_timeout(qca8k_read, ret1, !(val & mask),
294 0, QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC, false,
297 /* Check if qca8k_read has failed for a different reason
298 * before returning -ETIMEDOUT
300 if (ret < 0 && ret1 < 0)
307 qca8k_fdb_read(struct qca8k_priv *priv, struct qca8k_fdb *fdb)
312 /* load the ARL table into an array */
313 for (i = 0; i < 4; i++) {
314 ret = qca8k_read(priv, QCA8K_REG_ATU_DATA0 + (i * 4), &val);
322 fdb->vid = (reg[2] >> QCA8K_ATU_VID_S) & QCA8K_ATU_VID_M;
324 fdb->aging = reg[2] & QCA8K_ATU_STATUS_M;
325 /* portmask - 54:48 */
326 fdb->port_mask = (reg[1] >> QCA8K_ATU_PORT_S) & QCA8K_ATU_PORT_M;
328 fdb->mac[0] = (reg[1] >> QCA8K_ATU_ADDR0_S) & 0xff;
329 fdb->mac[1] = reg[1] & 0xff;
330 fdb->mac[2] = (reg[0] >> QCA8K_ATU_ADDR2_S) & 0xff;
331 fdb->mac[3] = (reg[0] >> QCA8K_ATU_ADDR3_S) & 0xff;
332 fdb->mac[4] = (reg[0] >> QCA8K_ATU_ADDR4_S) & 0xff;
333 fdb->mac[5] = reg[0] & 0xff;
339 qca8k_fdb_write(struct qca8k_priv *priv, u16 vid, u8 port_mask, const u8 *mac,
346 reg[2] = (vid & QCA8K_ATU_VID_M) << QCA8K_ATU_VID_S;
348 reg[2] |= aging & QCA8K_ATU_STATUS_M;
349 /* portmask - 54:48 */
350 reg[1] = (port_mask & QCA8K_ATU_PORT_M) << QCA8K_ATU_PORT_S;
352 reg[1] |= mac[0] << QCA8K_ATU_ADDR0_S;
354 reg[0] |= mac[2] << QCA8K_ATU_ADDR2_S;
355 reg[0] |= mac[3] << QCA8K_ATU_ADDR3_S;
356 reg[0] |= mac[4] << QCA8K_ATU_ADDR4_S;
359 /* load the array into the ARL table */
360 for (i = 0; i < 3; i++)
361 qca8k_write(priv, QCA8K_REG_ATU_DATA0 + (i * 4), reg[i]);
365 qca8k_fdb_access(struct qca8k_priv *priv, enum qca8k_fdb_cmd cmd, int port)
370 /* Set the command and FDB index */
371 reg = QCA8K_ATU_FUNC_BUSY;
374 reg |= QCA8K_ATU_FUNC_PORT_EN;
375 reg |= (port & QCA8K_ATU_FUNC_PORT_M) << QCA8K_ATU_FUNC_PORT_S;
378 /* Write the function register triggering the table access */
379 ret = qca8k_write(priv, QCA8K_REG_ATU_FUNC, reg);
383 /* wait for completion */
384 ret = qca8k_busy_wait(priv, QCA8K_REG_ATU_FUNC, QCA8K_ATU_FUNC_BUSY);
388 /* Check for table full violation when adding an entry */
389 if (cmd == QCA8K_FDB_LOAD) {
390 ret = qca8k_read(priv, QCA8K_REG_ATU_FUNC, ®);
393 if (reg & QCA8K_ATU_FUNC_FULL)
401 qca8k_fdb_next(struct qca8k_priv *priv, struct qca8k_fdb *fdb, int port)
405 qca8k_fdb_write(priv, fdb->vid, fdb->port_mask, fdb->mac, fdb->aging);
406 ret = qca8k_fdb_access(priv, QCA8K_FDB_NEXT, port);
410 return qca8k_fdb_read(priv, fdb);
414 qca8k_fdb_add(struct qca8k_priv *priv, const u8 *mac, u16 port_mask,
419 mutex_lock(&priv->reg_mutex);
420 qca8k_fdb_write(priv, vid, port_mask, mac, aging);
421 ret = qca8k_fdb_access(priv, QCA8K_FDB_LOAD, -1);
422 mutex_unlock(&priv->reg_mutex);
428 qca8k_fdb_del(struct qca8k_priv *priv, const u8 *mac, u16 port_mask, u16 vid)
432 mutex_lock(&priv->reg_mutex);
433 qca8k_fdb_write(priv, vid, port_mask, mac, 0);
434 ret = qca8k_fdb_access(priv, QCA8K_FDB_PURGE, -1);
435 mutex_unlock(&priv->reg_mutex);
441 qca8k_fdb_flush(struct qca8k_priv *priv)
443 mutex_lock(&priv->reg_mutex);
444 qca8k_fdb_access(priv, QCA8K_FDB_FLUSH, -1);
445 mutex_unlock(&priv->reg_mutex);
449 qca8k_vlan_access(struct qca8k_priv *priv, enum qca8k_vlan_cmd cmd, u16 vid)
454 /* Set the command and VLAN index */
455 reg = QCA8K_VTU_FUNC1_BUSY;
457 reg |= vid << QCA8K_VTU_FUNC1_VID_S;
459 /* Write the function register triggering the table access */
460 ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC1, reg);
464 /* wait for completion */
465 ret = qca8k_busy_wait(priv, QCA8K_REG_VTU_FUNC1, QCA8K_VTU_FUNC1_BUSY);
469 /* Check for table full violation when adding an entry */
470 if (cmd == QCA8K_VLAN_LOAD) {
471 ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC1, ®);
474 if (reg & QCA8K_VTU_FUNC1_FULL)
482 qca8k_vlan_add(struct qca8k_priv *priv, u8 port, u16 vid, bool untagged)
488 We do the right thing with VLAN 0 and treat it as untagged while
489 preserving the tag on egress.
494 mutex_lock(&priv->reg_mutex);
495 ret = qca8k_vlan_access(priv, QCA8K_VLAN_READ, vid);
499 ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC0, ®);
502 reg |= QCA8K_VTU_FUNC0_VALID | QCA8K_VTU_FUNC0_IVL_EN;
503 reg &= ~(QCA8K_VTU_FUNC0_EG_MODE_MASK << QCA8K_VTU_FUNC0_EG_MODE_S(port));
505 reg |= QCA8K_VTU_FUNC0_EG_MODE_UNTAG <<
506 QCA8K_VTU_FUNC0_EG_MODE_S(port);
508 reg |= QCA8K_VTU_FUNC0_EG_MODE_TAG <<
509 QCA8K_VTU_FUNC0_EG_MODE_S(port);
511 ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC0, reg);
514 ret = qca8k_vlan_access(priv, QCA8K_VLAN_LOAD, vid);
517 mutex_unlock(&priv->reg_mutex);
523 qca8k_vlan_del(struct qca8k_priv *priv, u8 port, u16 vid)
529 mutex_lock(&priv->reg_mutex);
530 ret = qca8k_vlan_access(priv, QCA8K_VLAN_READ, vid);
534 ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC0, ®);
537 reg &= ~(3 << QCA8K_VTU_FUNC0_EG_MODE_S(port));
538 reg |= QCA8K_VTU_FUNC0_EG_MODE_NOT <<
539 QCA8K_VTU_FUNC0_EG_MODE_S(port);
541 /* Check if we're the last member to be removed */
543 for (i = 0; i < QCA8K_NUM_PORTS; i++) {
544 mask = QCA8K_VTU_FUNC0_EG_MODE_NOT;
545 mask <<= QCA8K_VTU_FUNC0_EG_MODE_S(i);
547 if ((reg & mask) != mask) {
554 ret = qca8k_vlan_access(priv, QCA8K_VLAN_PURGE, vid);
556 ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC0, reg);
559 ret = qca8k_vlan_access(priv, QCA8K_VLAN_LOAD, vid);
563 mutex_unlock(&priv->reg_mutex);
569 qca8k_mib_init(struct qca8k_priv *priv)
573 mutex_lock(&priv->reg_mutex);
574 ret = qca8k_reg_set(priv, QCA8K_REG_MIB, QCA8K_MIB_FLUSH | QCA8K_MIB_BUSY);
578 ret = qca8k_busy_wait(priv, QCA8K_REG_MIB, QCA8K_MIB_BUSY);
582 ret = qca8k_reg_set(priv, QCA8K_REG_MIB, QCA8K_MIB_CPU_KEEP);
586 ret = qca8k_write(priv, QCA8K_REG_MODULE_EN, QCA8K_MODULE_EN_MIB);
589 mutex_unlock(&priv->reg_mutex);
594 qca8k_port_set_status(struct qca8k_priv *priv, int port, int enable)
596 u32 mask = QCA8K_PORT_STATUS_TXMAC | QCA8K_PORT_STATUS_RXMAC;
598 /* Port 0 and 6 have no internal PHY */
599 if (port > 0 && port < 6)
600 mask |= QCA8K_PORT_STATUS_LINK_AUTO;
603 qca8k_reg_set(priv, QCA8K_REG_PORT_STATUS(port), mask);
605 qca8k_reg_clear(priv, QCA8K_REG_PORT_STATUS(port), mask);
609 qca8k_port_to_phy(int port)
612 * Port 0 has no internal phy.
613 * Port 1 has an internal PHY at MDIO address 0.
614 * Port 2 has an internal PHY at MDIO address 1.
616 * Port 5 has an internal PHY at MDIO address 4.
617 * Port 6 has no internal PHY.
624 qca8k_mdio_busy_wait(struct mii_bus *bus, u32 reg, u32 mask)
630 qca8k_split_addr(reg, &r1, &r2, &page);
632 ret = read_poll_timeout(qca8k_mii_read32, ret1, !(val & mask), 0,
633 QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC, false,
634 bus, 0x10 | r2, r1, &val);
636 /* Check if qca8k_read has failed for a different reason
637 * before returnting -ETIMEDOUT
639 if (ret < 0 && ret1 < 0)
646 qca8k_mdio_write(struct mii_bus *bus, int phy, int regnum, u16 data)
652 if (regnum >= QCA8K_MDIO_MASTER_MAX_REG)
655 val = QCA8K_MDIO_MASTER_BUSY | QCA8K_MDIO_MASTER_EN |
656 QCA8K_MDIO_MASTER_WRITE | QCA8K_MDIO_MASTER_PHY_ADDR(phy) |
657 QCA8K_MDIO_MASTER_REG_ADDR(regnum) |
658 QCA8K_MDIO_MASTER_DATA(data);
660 qca8k_split_addr(QCA8K_MDIO_MASTER_CTRL, &r1, &r2, &page);
662 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
664 ret = qca8k_set_page(bus, page);
668 qca8k_mii_write32(bus, 0x10 | r2, r1, val);
670 ret = qca8k_mdio_busy_wait(bus, QCA8K_MDIO_MASTER_CTRL,
671 QCA8K_MDIO_MASTER_BUSY);
674 /* even if the busy_wait timeouts try to clear the MASTER_EN */
675 qca8k_mii_write32(bus, 0x10 | r2, r1, 0);
677 mutex_unlock(&bus->mdio_lock);
683 qca8k_mdio_read(struct mii_bus *bus, int phy, int regnum)
689 if (regnum >= QCA8K_MDIO_MASTER_MAX_REG)
692 val = QCA8K_MDIO_MASTER_BUSY | QCA8K_MDIO_MASTER_EN |
693 QCA8K_MDIO_MASTER_READ | QCA8K_MDIO_MASTER_PHY_ADDR(phy) |
694 QCA8K_MDIO_MASTER_REG_ADDR(regnum);
696 qca8k_split_addr(QCA8K_MDIO_MASTER_CTRL, &r1, &r2, &page);
698 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
700 ret = qca8k_set_page(bus, page);
704 qca8k_mii_write32(bus, 0x10 | r2, r1, val);
706 ret = qca8k_mdio_busy_wait(bus, QCA8K_MDIO_MASTER_CTRL,
707 QCA8K_MDIO_MASTER_BUSY);
711 ret = qca8k_mii_read32(bus, 0x10 | r2, r1, &val);
714 /* even if the busy_wait timeouts try to clear the MASTER_EN */
715 qca8k_mii_write32(bus, 0x10 | r2, r1, 0);
717 mutex_unlock(&bus->mdio_lock);
720 ret = val & QCA8K_MDIO_MASTER_DATA_MASK;
726 qca8k_internal_mdio_write(struct mii_bus *slave_bus, int phy, int regnum, u16 data)
728 struct qca8k_priv *priv = slave_bus->priv;
729 struct mii_bus *bus = priv->bus;
731 return qca8k_mdio_write(bus, phy, regnum, data);
735 qca8k_internal_mdio_read(struct mii_bus *slave_bus, int phy, int regnum)
737 struct qca8k_priv *priv = slave_bus->priv;
738 struct mii_bus *bus = priv->bus;
740 return qca8k_mdio_read(bus, phy, regnum);
744 qca8k_phy_write(struct dsa_switch *ds, int port, int regnum, u16 data)
746 struct qca8k_priv *priv = ds->priv;
748 /* Check if the legacy mapping should be used and the
749 * port is not correctly mapped to the right PHY in the
752 if (priv->legacy_phy_port_mapping)
753 port = qca8k_port_to_phy(port) % PHY_MAX_ADDR;
755 return qca8k_mdio_write(priv->bus, port, regnum, data);
759 qca8k_phy_read(struct dsa_switch *ds, int port, int regnum)
761 struct qca8k_priv *priv = ds->priv;
764 /* Check if the legacy mapping should be used and the
765 * port is not correctly mapped to the right PHY in the
768 if (priv->legacy_phy_port_mapping)
769 port = qca8k_port_to_phy(port) % PHY_MAX_ADDR;
771 ret = qca8k_mdio_read(priv->bus, port, regnum);
780 qca8k_mdio_register(struct qca8k_priv *priv, struct device_node *mdio)
782 struct dsa_switch *ds = priv->ds;
785 bus = devm_mdiobus_alloc(ds->dev);
790 bus->priv = (void *)priv;
791 bus->name = "qca8k slave mii";
792 bus->read = qca8k_internal_mdio_read;
793 bus->write = qca8k_internal_mdio_write;
794 snprintf(bus->id, MII_BUS_ID_SIZE, "qca8k-%d",
797 bus->parent = ds->dev;
798 bus->phy_mask = ~ds->phys_mii_mask;
800 ds->slave_mii_bus = bus;
802 return devm_of_mdiobus_register(priv->dev, bus, mdio);
806 qca8k_setup_mdio_bus(struct qca8k_priv *priv)
808 u32 internal_mdio_mask = 0, external_mdio_mask = 0, reg;
809 struct device_node *ports, *port, *mdio;
810 phy_interface_t mode;
813 ports = of_get_child_by_name(priv->dev->of_node, "ports");
815 ports = of_get_child_by_name(priv->dev->of_node, "ethernet-ports");
820 for_each_available_child_of_node(ports, port) {
821 err = of_property_read_u32(port, "reg", ®);
828 if (!dsa_is_user_port(priv->ds, reg))
831 of_get_phy_mode(port, &mode);
833 if (of_property_read_bool(port, "phy-handle") &&
834 mode != PHY_INTERFACE_MODE_INTERNAL)
835 external_mdio_mask |= BIT(reg);
837 internal_mdio_mask |= BIT(reg);
841 if (!external_mdio_mask && !internal_mdio_mask) {
842 dev_err(priv->dev, "no PHYs are defined.\n");
846 /* The QCA8K_MDIO_MASTER_EN Bit, which grants access to PHYs through
847 * the MDIO_MASTER register also _disconnects_ the external MDC
848 * passthrough to the internal PHYs. It's not possible to use both
849 * configurations at the same time!
851 * Because this came up during the review process:
852 * If the external mdio-bus driver is capable magically disabling
853 * the QCA8K_MDIO_MASTER_EN and mutex/spin-locking out the qca8k's
854 * accessors for the time being, it would be possible to pull this
857 if (!!external_mdio_mask && !!internal_mdio_mask) {
858 dev_err(priv->dev, "either internal or external mdio bus configuration is supported.\n");
862 if (external_mdio_mask) {
863 /* Make sure to disable the internal mdio bus in cases
864 * a dt-overlay and driver reload changed the configuration
867 return qca8k_reg_clear(priv, QCA8K_MDIO_MASTER_CTRL,
868 QCA8K_MDIO_MASTER_EN);
871 /* Check if the devicetree declare the port:phy mapping */
872 mdio = of_get_child_by_name(priv->dev->of_node, "mdio");
873 if (of_device_is_available(mdio)) {
874 err = qca8k_mdio_register(priv, mdio);
881 /* If a mapping can't be found the legacy mapping is used,
882 * using the qca8k_port_to_phy function
884 priv->legacy_phy_port_mapping = true;
885 priv->ops.phy_read = qca8k_phy_read;
886 priv->ops.phy_write = qca8k_phy_write;
892 qca8k_setup_of_rgmii_delay(struct qca8k_priv *priv)
894 struct device_node *port_dn;
895 phy_interface_t mode;
899 /* CPU port is already checked */
900 dp = dsa_to_port(priv->ds, 0);
904 /* Check if port 0 is set to the correct type */
905 of_get_phy_mode(port_dn, &mode);
906 if (mode != PHY_INTERFACE_MODE_RGMII_ID &&
907 mode != PHY_INTERFACE_MODE_RGMII_RXID &&
908 mode != PHY_INTERFACE_MODE_RGMII_TXID) {
913 case PHY_INTERFACE_MODE_RGMII_ID:
914 case PHY_INTERFACE_MODE_RGMII_RXID:
915 if (of_property_read_u32(port_dn, "rx-internal-delay-ps", &val))
918 /* Switch regs accept value in ns, convert ps to ns */
921 if (val > QCA8K_MAX_DELAY) {
922 dev_err(priv->dev, "rgmii rx delay is limited to a max value of 3ns, setting to the max value");
926 priv->rgmii_rx_delay = val;
927 /* Stop here if we need to check only for rx delay */
928 if (mode != PHY_INTERFACE_MODE_RGMII_ID)
932 case PHY_INTERFACE_MODE_RGMII_TXID:
933 if (of_property_read_u32(port_dn, "tx-internal-delay-ps", &val))
936 /* Switch regs accept value in ns, convert ps to ns */
939 if (val > QCA8K_MAX_DELAY) {
940 dev_err(priv->dev, "rgmii tx delay is limited to a max value of 3ns, setting to the max value");
944 priv->rgmii_tx_delay = val;
954 qca8k_setup(struct dsa_switch *ds)
956 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
960 /* Make sure that port 0 is the cpu port */
961 if (!dsa_is_cpu_port(ds, 0)) {
962 dev_err(priv->dev, "port 0 is not the CPU port");
966 mutex_init(&priv->reg_mutex);
968 /* Start by setting up the register mapping */
969 priv->regmap = devm_regmap_init(ds->dev, NULL, priv,
970 &qca8k_regmap_config);
971 if (IS_ERR(priv->regmap))
972 dev_warn(priv->dev, "regmap initialization failed");
974 ret = qca8k_setup_mdio_bus(priv);
978 ret = qca8k_setup_of_rgmii_delay(priv);
982 /* Enable CPU Port */
983 ret = qca8k_reg_set(priv, QCA8K_REG_GLOBAL_FW_CTRL0,
984 QCA8K_GLOBAL_FW_CTRL0_CPU_PORT_EN);
986 dev_err(priv->dev, "failed enabling CPU port");
990 /* Enable MIB counters */
991 ret = qca8k_mib_init(priv);
993 dev_warn(priv->dev, "mib init failed");
995 /* Enable QCA header mode on the cpu port */
996 ret = qca8k_write(priv, QCA8K_REG_PORT_HDR_CTRL(QCA8K_CPU_PORT),
997 QCA8K_PORT_HDR_CTRL_ALL << QCA8K_PORT_HDR_CTRL_TX_S |
998 QCA8K_PORT_HDR_CTRL_ALL << QCA8K_PORT_HDR_CTRL_RX_S);
1000 dev_err(priv->dev, "failed enabling QCA header mode");
1004 /* Disable forwarding by default on all ports */
1005 for (i = 0; i < QCA8K_NUM_PORTS; i++) {
1006 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(i),
1007 QCA8K_PORT_LOOKUP_MEMBER, 0);
1012 /* Disable MAC by default on all ports */
1013 for (i = 1; i < QCA8K_NUM_PORTS; i++)
1014 qca8k_port_set_status(priv, i, 0);
1016 /* Forward all unknown frames to CPU port for Linux processing */
1017 ret = qca8k_write(priv, QCA8K_REG_GLOBAL_FW_CTRL1,
1018 BIT(0) << QCA8K_GLOBAL_FW_CTRL1_IGMP_DP_S |
1019 BIT(0) << QCA8K_GLOBAL_FW_CTRL1_BC_DP_S |
1020 BIT(0) << QCA8K_GLOBAL_FW_CTRL1_MC_DP_S |
1021 BIT(0) << QCA8K_GLOBAL_FW_CTRL1_UC_DP_S);
1025 /* Setup connection between CPU port & user ports */
1026 for (i = 0; i < QCA8K_NUM_PORTS; i++) {
1027 /* CPU port gets connected to all user ports of the switch */
1028 if (dsa_is_cpu_port(ds, i)) {
1029 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(QCA8K_CPU_PORT),
1030 QCA8K_PORT_LOOKUP_MEMBER, dsa_user_ports(ds));
1035 /* Individual user ports get connected to CPU port only */
1036 if (dsa_is_user_port(ds, i)) {
1037 int shift = 16 * (i % 2);
1039 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(i),
1040 QCA8K_PORT_LOOKUP_MEMBER,
1041 BIT(QCA8K_CPU_PORT));
1045 /* Enable ARP Auto-learning by default */
1046 ret = qca8k_reg_set(priv, QCA8K_PORT_LOOKUP_CTRL(i),
1047 QCA8K_PORT_LOOKUP_LEARN);
1051 /* For port based vlans to work we need to set the
1052 * default egress vid
1054 ret = qca8k_rmw(priv, QCA8K_EGRESS_VLAN(i),
1056 QCA8K_PORT_VID_DEF << shift);
1060 ret = qca8k_write(priv, QCA8K_REG_PORT_VLAN_CTRL0(i),
1061 QCA8K_PORT_VLAN_CVID(QCA8K_PORT_VID_DEF) |
1062 QCA8K_PORT_VLAN_SVID(QCA8K_PORT_VID_DEF));
1068 /* The port 5 of the qca8337 have some problem in flood condition. The
1069 * original legacy driver had some specific buffer and priority settings
1070 * for the different port suggested by the QCA switch team. Add this
1071 * missing settings to improve switch stability under load condition.
1072 * This problem is limited to qca8337 and other qca8k switch are not affected.
1074 if (priv->switch_id == QCA8K_ID_QCA8337) {
1075 for (i = 0; i < QCA8K_NUM_PORTS; i++) {
1077 /* The 2 CPU port and port 5 requires some different
1078 * priority than any other ports.
1083 mask = QCA8K_PORT_HOL_CTRL0_EG_PRI0(0x3) |
1084 QCA8K_PORT_HOL_CTRL0_EG_PRI1(0x4) |
1085 QCA8K_PORT_HOL_CTRL0_EG_PRI2(0x4) |
1086 QCA8K_PORT_HOL_CTRL0_EG_PRI3(0x4) |
1087 QCA8K_PORT_HOL_CTRL0_EG_PRI4(0x6) |
1088 QCA8K_PORT_HOL_CTRL0_EG_PRI5(0x8) |
1089 QCA8K_PORT_HOL_CTRL0_EG_PORT(0x1e);
1092 mask = QCA8K_PORT_HOL_CTRL0_EG_PRI0(0x3) |
1093 QCA8K_PORT_HOL_CTRL0_EG_PRI1(0x4) |
1094 QCA8K_PORT_HOL_CTRL0_EG_PRI2(0x6) |
1095 QCA8K_PORT_HOL_CTRL0_EG_PRI3(0x8) |
1096 QCA8K_PORT_HOL_CTRL0_EG_PORT(0x19);
1098 qca8k_write(priv, QCA8K_REG_PORT_HOL_CTRL0(i), mask);
1100 mask = QCA8K_PORT_HOL_CTRL1_ING(0x6) |
1101 QCA8K_PORT_HOL_CTRL1_EG_PRI_BUF_EN |
1102 QCA8K_PORT_HOL_CTRL1_EG_PORT_BUF_EN |
1103 QCA8K_PORT_HOL_CTRL1_WRED_EN;
1104 qca8k_rmw(priv, QCA8K_REG_PORT_HOL_CTRL1(i),
1105 QCA8K_PORT_HOL_CTRL1_ING_BUF |
1106 QCA8K_PORT_HOL_CTRL1_EG_PRI_BUF_EN |
1107 QCA8K_PORT_HOL_CTRL1_EG_PORT_BUF_EN |
1108 QCA8K_PORT_HOL_CTRL1_WRED_EN,
1113 /* Special GLOBAL_FC_THRESH value are needed for ar8327 switch */
1114 if (priv->switch_id == QCA8K_ID_QCA8327) {
1115 mask = QCA8K_GLOBAL_FC_GOL_XON_THRES(288) |
1116 QCA8K_GLOBAL_FC_GOL_XOFF_THRES(496);
1117 qca8k_rmw(priv, QCA8K_REG_GLOBAL_FC_THRESH,
1118 QCA8K_GLOBAL_FC_GOL_XON_THRES_S |
1119 QCA8K_GLOBAL_FC_GOL_XOFF_THRES_S,
1123 /* Setup our port MTUs to match power on defaults */
1124 for (i = 0; i < QCA8K_NUM_PORTS; i++)
1125 priv->port_mtu[i] = ETH_FRAME_LEN + ETH_FCS_LEN;
1126 ret = qca8k_write(priv, QCA8K_MAX_FRAME_SIZE, ETH_FRAME_LEN + ETH_FCS_LEN);
1128 dev_warn(priv->dev, "failed setting MTU settings");
1130 /* Flush the FDB table */
1131 qca8k_fdb_flush(priv);
1133 /* We don't have interrupts for link changes, so we need to poll */
1134 ds->pcs_poll = true;
1140 qca8k_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
1141 const struct phylink_link_state *state)
1143 struct qca8k_priv *priv = ds->priv;
1148 case 0: /* 1st CPU port */
1149 if (state->interface != PHY_INTERFACE_MODE_RGMII &&
1150 state->interface != PHY_INTERFACE_MODE_RGMII_ID &&
1151 state->interface != PHY_INTERFACE_MODE_RGMII_TXID &&
1152 state->interface != PHY_INTERFACE_MODE_RGMII_RXID &&
1153 state->interface != PHY_INTERFACE_MODE_SGMII)
1156 reg = QCA8K_REG_PORT0_PAD_CTRL;
1163 /* Internal PHY, nothing to do */
1165 case 6: /* 2nd CPU port / external PHY */
1166 if (state->interface != PHY_INTERFACE_MODE_RGMII &&
1167 state->interface != PHY_INTERFACE_MODE_RGMII_ID &&
1168 state->interface != PHY_INTERFACE_MODE_RGMII_TXID &&
1169 state->interface != PHY_INTERFACE_MODE_RGMII_RXID &&
1170 state->interface != PHY_INTERFACE_MODE_SGMII &&
1171 state->interface != PHY_INTERFACE_MODE_1000BASEX)
1174 reg = QCA8K_REG_PORT6_PAD_CTRL;
1177 dev_err(ds->dev, "%s: unsupported port: %i\n", __func__, port);
1181 if (port != 6 && phylink_autoneg_inband(mode)) {
1182 dev_err(ds->dev, "%s: in-band negotiation unsupported\n",
1187 switch (state->interface) {
1188 case PHY_INTERFACE_MODE_RGMII:
1189 /* RGMII mode means no delay so don't enable the delay */
1190 qca8k_write(priv, reg, QCA8K_PORT_PAD_RGMII_EN);
1192 case PHY_INTERFACE_MODE_RGMII_ID:
1193 case PHY_INTERFACE_MODE_RGMII_TXID:
1194 case PHY_INTERFACE_MODE_RGMII_RXID:
1195 /* RGMII_ID needs internal delay. This is enabled through
1196 * PORT5_PAD_CTRL for all ports, rather than individual port
1199 qca8k_write(priv, reg,
1200 QCA8K_PORT_PAD_RGMII_EN |
1201 QCA8K_PORT_PAD_RGMII_TX_DELAY(priv->rgmii_tx_delay) |
1202 QCA8K_PORT_PAD_RGMII_RX_DELAY(priv->rgmii_rx_delay) |
1203 QCA8K_PORT_PAD_RGMII_TX_DELAY_EN |
1204 QCA8K_PORT_PAD_RGMII_RX_DELAY_EN);
1205 /* QCA8337 requires to set rgmii rx delay */
1206 if (priv->switch_id == QCA8K_ID_QCA8337)
1207 qca8k_write(priv, QCA8K_REG_PORT5_PAD_CTRL,
1208 QCA8K_PORT_PAD_RGMII_RX_DELAY_EN);
1210 case PHY_INTERFACE_MODE_SGMII:
1211 case PHY_INTERFACE_MODE_1000BASEX:
1212 /* Enable SGMII on the port */
1213 qca8k_write(priv, reg, QCA8K_PORT_PAD_SGMII_EN);
1215 /* Enable/disable SerDes auto-negotiation as necessary */
1216 ret = qca8k_read(priv, QCA8K_REG_PWS, &val);
1219 if (phylink_autoneg_inband(mode))
1220 val &= ~QCA8K_PWS_SERDES_AEN_DIS;
1222 val |= QCA8K_PWS_SERDES_AEN_DIS;
1223 qca8k_write(priv, QCA8K_REG_PWS, val);
1225 /* Configure the SGMII parameters */
1226 ret = qca8k_read(priv, QCA8K_REG_SGMII_CTRL, &val);
1230 val |= QCA8K_SGMII_EN_PLL | QCA8K_SGMII_EN_RX |
1231 QCA8K_SGMII_EN_TX | QCA8K_SGMII_EN_SD;
1233 if (dsa_is_cpu_port(ds, port)) {
1234 /* CPU port, we're talking to the CPU MAC, be a PHY */
1235 val &= ~QCA8K_SGMII_MODE_CTRL_MASK;
1236 val |= QCA8K_SGMII_MODE_CTRL_PHY;
1237 } else if (state->interface == PHY_INTERFACE_MODE_SGMII) {
1238 val &= ~QCA8K_SGMII_MODE_CTRL_MASK;
1239 val |= QCA8K_SGMII_MODE_CTRL_MAC;
1240 } else if (state->interface == PHY_INTERFACE_MODE_1000BASEX) {
1241 val &= ~QCA8K_SGMII_MODE_CTRL_MASK;
1242 val |= QCA8K_SGMII_MODE_CTRL_BASEX;
1245 qca8k_write(priv, QCA8K_REG_SGMII_CTRL, val);
1248 dev_err(ds->dev, "xMII mode %s not supported for port %d\n",
1249 phy_modes(state->interface), port);
1255 qca8k_phylink_validate(struct dsa_switch *ds, int port,
1256 unsigned long *supported,
1257 struct phylink_link_state *state)
1259 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
1262 case 0: /* 1st CPU port */
1263 if (state->interface != PHY_INTERFACE_MODE_NA &&
1264 state->interface != PHY_INTERFACE_MODE_RGMII &&
1265 state->interface != PHY_INTERFACE_MODE_RGMII_ID &&
1266 state->interface != PHY_INTERFACE_MODE_RGMII_TXID &&
1267 state->interface != PHY_INTERFACE_MODE_RGMII_RXID &&
1268 state->interface != PHY_INTERFACE_MODE_SGMII)
1277 if (state->interface != PHY_INTERFACE_MODE_NA &&
1278 state->interface != PHY_INTERFACE_MODE_GMII &&
1279 state->interface != PHY_INTERFACE_MODE_INTERNAL)
1282 case 6: /* 2nd CPU port / external PHY */
1283 if (state->interface != PHY_INTERFACE_MODE_NA &&
1284 state->interface != PHY_INTERFACE_MODE_RGMII &&
1285 state->interface != PHY_INTERFACE_MODE_RGMII_ID &&
1286 state->interface != PHY_INTERFACE_MODE_RGMII_TXID &&
1287 state->interface != PHY_INTERFACE_MODE_RGMII_RXID &&
1288 state->interface != PHY_INTERFACE_MODE_SGMII &&
1289 state->interface != PHY_INTERFACE_MODE_1000BASEX)
1294 linkmode_zero(supported);
1298 phylink_set_port_modes(mask);
1299 phylink_set(mask, Autoneg);
1301 phylink_set(mask, 1000baseT_Full);
1302 phylink_set(mask, 10baseT_Half);
1303 phylink_set(mask, 10baseT_Full);
1304 phylink_set(mask, 100baseT_Half);
1305 phylink_set(mask, 100baseT_Full);
1307 if (state->interface == PHY_INTERFACE_MODE_1000BASEX)
1308 phylink_set(mask, 1000baseX_Full);
1310 phylink_set(mask, Pause);
1311 phylink_set(mask, Asym_Pause);
1313 linkmode_and(supported, supported, mask);
1314 linkmode_and(state->advertising, state->advertising, mask);
1318 qca8k_phylink_mac_link_state(struct dsa_switch *ds, int port,
1319 struct phylink_link_state *state)
1321 struct qca8k_priv *priv = ds->priv;
1325 ret = qca8k_read(priv, QCA8K_REG_PORT_STATUS(port), ®);
1329 state->link = !!(reg & QCA8K_PORT_STATUS_LINK_UP);
1330 state->an_complete = state->link;
1331 state->an_enabled = !!(reg & QCA8K_PORT_STATUS_LINK_AUTO);
1332 state->duplex = (reg & QCA8K_PORT_STATUS_DUPLEX) ? DUPLEX_FULL :
1335 switch (reg & QCA8K_PORT_STATUS_SPEED) {
1336 case QCA8K_PORT_STATUS_SPEED_10:
1337 state->speed = SPEED_10;
1339 case QCA8K_PORT_STATUS_SPEED_100:
1340 state->speed = SPEED_100;
1342 case QCA8K_PORT_STATUS_SPEED_1000:
1343 state->speed = SPEED_1000;
1346 state->speed = SPEED_UNKNOWN;
1350 state->pause = MLO_PAUSE_NONE;
1351 if (reg & QCA8K_PORT_STATUS_RXFLOW)
1352 state->pause |= MLO_PAUSE_RX;
1353 if (reg & QCA8K_PORT_STATUS_TXFLOW)
1354 state->pause |= MLO_PAUSE_TX;
1360 qca8k_phylink_mac_link_down(struct dsa_switch *ds, int port, unsigned int mode,
1361 phy_interface_t interface)
1363 struct qca8k_priv *priv = ds->priv;
1365 qca8k_port_set_status(priv, port, 0);
1369 qca8k_phylink_mac_link_up(struct dsa_switch *ds, int port, unsigned int mode,
1370 phy_interface_t interface, struct phy_device *phydev,
1371 int speed, int duplex, bool tx_pause, bool rx_pause)
1373 struct qca8k_priv *priv = ds->priv;
1376 if (phylink_autoneg_inband(mode)) {
1377 reg = QCA8K_PORT_STATUS_LINK_AUTO;
1381 reg = QCA8K_PORT_STATUS_SPEED_10;
1384 reg = QCA8K_PORT_STATUS_SPEED_100;
1387 reg = QCA8K_PORT_STATUS_SPEED_1000;
1390 reg = QCA8K_PORT_STATUS_LINK_AUTO;
1394 if (duplex == DUPLEX_FULL)
1395 reg |= QCA8K_PORT_STATUS_DUPLEX;
1397 if (rx_pause || dsa_is_cpu_port(ds, port))
1398 reg |= QCA8K_PORT_STATUS_RXFLOW;
1400 if (tx_pause || dsa_is_cpu_port(ds, port))
1401 reg |= QCA8K_PORT_STATUS_TXFLOW;
1404 reg |= QCA8K_PORT_STATUS_TXMAC | QCA8K_PORT_STATUS_RXMAC;
1406 qca8k_write(priv, QCA8K_REG_PORT_STATUS(port), reg);
1410 qca8k_get_strings(struct dsa_switch *ds, int port, u32 stringset, uint8_t *data)
1414 if (stringset != ETH_SS_STATS)
1417 for (i = 0; i < ARRAY_SIZE(ar8327_mib); i++)
1418 strncpy(data + i * ETH_GSTRING_LEN, ar8327_mib[i].name,
1423 qca8k_get_ethtool_stats(struct dsa_switch *ds, int port,
1426 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1427 const struct qca8k_mib_desc *mib;
1432 for (i = 0; i < ARRAY_SIZE(ar8327_mib); i++) {
1433 mib = &ar8327_mib[i];
1434 reg = QCA8K_PORT_MIB_COUNTER(port) + mib->offset;
1436 ret = qca8k_read(priv, reg, &val);
1440 if (mib->size == 2) {
1441 ret = qca8k_read(priv, reg + 4, &hi);
1448 data[i] |= (u64)hi << 32;
1453 qca8k_get_sset_count(struct dsa_switch *ds, int port, int sset)
1455 if (sset != ETH_SS_STATS)
1458 return ARRAY_SIZE(ar8327_mib);
1462 qca8k_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *eee)
1464 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1465 u32 lpi_en = QCA8K_REG_EEE_CTRL_LPI_EN(port);
1469 mutex_lock(&priv->reg_mutex);
1470 ret = qca8k_read(priv, QCA8K_REG_EEE_CTRL, ®);
1474 if (eee->eee_enabled)
1478 ret = qca8k_write(priv, QCA8K_REG_EEE_CTRL, reg);
1481 mutex_unlock(&priv->reg_mutex);
1486 qca8k_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
1488 /* Nothing to do on the port's MAC */
1493 qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
1495 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1499 case BR_STATE_DISABLED:
1500 stp_state = QCA8K_PORT_LOOKUP_STATE_DISABLED;
1502 case BR_STATE_BLOCKING:
1503 stp_state = QCA8K_PORT_LOOKUP_STATE_BLOCKING;
1505 case BR_STATE_LISTENING:
1506 stp_state = QCA8K_PORT_LOOKUP_STATE_LISTENING;
1508 case BR_STATE_LEARNING:
1509 stp_state = QCA8K_PORT_LOOKUP_STATE_LEARNING;
1511 case BR_STATE_FORWARDING:
1513 stp_state = QCA8K_PORT_LOOKUP_STATE_FORWARD;
1517 qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
1518 QCA8K_PORT_LOOKUP_STATE_MASK, stp_state);
1522 qca8k_port_bridge_join(struct dsa_switch *ds, int port, struct net_device *br)
1524 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1525 int port_mask = BIT(QCA8K_CPU_PORT);
1528 for (i = 1; i < QCA8K_NUM_PORTS; i++) {
1529 if (dsa_to_port(ds, i)->bridge_dev != br)
1531 /* Add this port to the portvlan mask of the other ports
1534 ret = qca8k_reg_set(priv,
1535 QCA8K_PORT_LOOKUP_CTRL(i),
1540 port_mask |= BIT(i);
1543 /* Add all other ports to this ports portvlan mask */
1544 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
1545 QCA8K_PORT_LOOKUP_MEMBER, port_mask);
1551 qca8k_port_bridge_leave(struct dsa_switch *ds, int port, struct net_device *br)
1553 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1556 for (i = 1; i < QCA8K_NUM_PORTS; i++) {
1557 if (dsa_to_port(ds, i)->bridge_dev != br)
1559 /* Remove this port to the portvlan mask of the other ports
1562 qca8k_reg_clear(priv,
1563 QCA8K_PORT_LOOKUP_CTRL(i),
1567 /* Set the cpu port to be the only one in the portvlan mask of
1570 qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
1571 QCA8K_PORT_LOOKUP_MEMBER, BIT(QCA8K_CPU_PORT));
1575 qca8k_port_enable(struct dsa_switch *ds, int port,
1576 struct phy_device *phy)
1578 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1580 qca8k_port_set_status(priv, port, 1);
1581 priv->port_sts[port].enabled = 1;
1583 if (dsa_is_user_port(ds, port))
1584 phy_support_asym_pause(phy);
1590 qca8k_port_disable(struct dsa_switch *ds, int port)
1592 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1594 qca8k_port_set_status(priv, port, 0);
1595 priv->port_sts[port].enabled = 0;
1599 qca8k_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
1601 struct qca8k_priv *priv = ds->priv;
1602 int ret, i, mtu = 0;
1604 priv->port_mtu[port] = new_mtu;
1606 for (i = 0; i < QCA8K_NUM_PORTS; i++)
1607 if (priv->port_mtu[i] > mtu)
1608 mtu = priv->port_mtu[i];
1610 /* To change the MAX_FRAME_SIZE the cpu ports must be off or
1611 * the switch panics.
1612 * Turn off both cpu ports before applying the new value to prevent
1615 if (priv->port_sts[0].enabled)
1616 qca8k_port_set_status(priv, 0, 0);
1618 if (priv->port_sts[6].enabled)
1619 qca8k_port_set_status(priv, 6, 0);
1621 /* Include L2 header / FCS length */
1622 ret = qca8k_write(priv, QCA8K_MAX_FRAME_SIZE, mtu + ETH_HLEN + ETH_FCS_LEN);
1624 if (priv->port_sts[0].enabled)
1625 qca8k_port_set_status(priv, 0, 1);
1627 if (priv->port_sts[6].enabled)
1628 qca8k_port_set_status(priv, 6, 1);
1634 qca8k_port_max_mtu(struct dsa_switch *ds, int port)
1636 return QCA8K_MAX_MTU;
1640 qca8k_port_fdb_insert(struct qca8k_priv *priv, const u8 *addr,
1641 u16 port_mask, u16 vid)
1643 /* Set the vid to the port vlan id if no vid is set */
1645 vid = QCA8K_PORT_VID_DEF;
1647 return qca8k_fdb_add(priv, addr, port_mask, vid,
1648 QCA8K_ATU_STATUS_STATIC);
1652 qca8k_port_fdb_add(struct dsa_switch *ds, int port,
1653 const unsigned char *addr, u16 vid)
1655 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1656 u16 port_mask = BIT(port);
1658 return qca8k_port_fdb_insert(priv, addr, port_mask, vid);
1662 qca8k_port_fdb_del(struct dsa_switch *ds, int port,
1663 const unsigned char *addr, u16 vid)
1665 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1666 u16 port_mask = BIT(port);
1669 vid = QCA8K_PORT_VID_DEF;
1671 return qca8k_fdb_del(priv, addr, port_mask, vid);
1675 qca8k_port_fdb_dump(struct dsa_switch *ds, int port,
1676 dsa_fdb_dump_cb_t *cb, void *data)
1678 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1679 struct qca8k_fdb _fdb = { 0 };
1680 int cnt = QCA8K_NUM_FDB_RECORDS;
1684 mutex_lock(&priv->reg_mutex);
1685 while (cnt-- && !qca8k_fdb_next(priv, &_fdb, port)) {
1688 is_static = (_fdb.aging == QCA8K_ATU_STATUS_STATIC);
1689 ret = cb(_fdb.mac, _fdb.vid, is_static, data);
1693 mutex_unlock(&priv->reg_mutex);
1699 qca8k_port_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
1700 struct netlink_ext_ack *extack)
1702 struct qca8k_priv *priv = ds->priv;
1705 if (vlan_filtering) {
1706 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
1707 QCA8K_PORT_LOOKUP_VLAN_MODE,
1708 QCA8K_PORT_LOOKUP_VLAN_MODE_SECURE);
1710 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
1711 QCA8K_PORT_LOOKUP_VLAN_MODE,
1712 QCA8K_PORT_LOOKUP_VLAN_MODE_NONE);
1719 qca8k_port_vlan_add(struct dsa_switch *ds, int port,
1720 const struct switchdev_obj_port_vlan *vlan,
1721 struct netlink_ext_ack *extack)
1723 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1724 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1725 struct qca8k_priv *priv = ds->priv;
1728 ret = qca8k_vlan_add(priv, port, vlan->vid, untagged);
1730 dev_err(priv->dev, "Failed to add VLAN to port %d (%d)", port, ret);
1735 int shift = 16 * (port % 2);
1737 ret = qca8k_rmw(priv, QCA8K_EGRESS_VLAN(port),
1738 0xfff << shift, vlan->vid << shift);
1742 ret = qca8k_write(priv, QCA8K_REG_PORT_VLAN_CTRL0(port),
1743 QCA8K_PORT_VLAN_CVID(vlan->vid) |
1744 QCA8K_PORT_VLAN_SVID(vlan->vid));
1751 qca8k_port_vlan_del(struct dsa_switch *ds, int port,
1752 const struct switchdev_obj_port_vlan *vlan)
1754 struct qca8k_priv *priv = ds->priv;
1757 ret = qca8k_vlan_del(priv, port, vlan->vid);
1759 dev_err(priv->dev, "Failed to delete VLAN from port %d (%d)", port, ret);
1764 static u32 qca8k_get_phy_flags(struct dsa_switch *ds, int port)
1766 struct qca8k_priv *priv = ds->priv;
1768 /* Communicate to the phy internal driver the switch revision.
1769 * Based on the switch revision different values needs to be
1770 * set to the dbg and mmd reg on the phy.
1771 * The first 2 bit are used to communicate the switch revision
1772 * to the phy driver.
1774 if (port > 0 && port < 6)
1775 return priv->switch_revision;
1780 static enum dsa_tag_protocol
1781 qca8k_get_tag_protocol(struct dsa_switch *ds, int port,
1782 enum dsa_tag_protocol mp)
1784 return DSA_TAG_PROTO_QCA;
1787 static const struct dsa_switch_ops qca8k_switch_ops = {
1788 .get_tag_protocol = qca8k_get_tag_protocol,
1789 .setup = qca8k_setup,
1790 .get_strings = qca8k_get_strings,
1791 .get_ethtool_stats = qca8k_get_ethtool_stats,
1792 .get_sset_count = qca8k_get_sset_count,
1793 .get_mac_eee = qca8k_get_mac_eee,
1794 .set_mac_eee = qca8k_set_mac_eee,
1795 .port_enable = qca8k_port_enable,
1796 .port_disable = qca8k_port_disable,
1797 .port_change_mtu = qca8k_port_change_mtu,
1798 .port_max_mtu = qca8k_port_max_mtu,
1799 .port_stp_state_set = qca8k_port_stp_state_set,
1800 .port_bridge_join = qca8k_port_bridge_join,
1801 .port_bridge_leave = qca8k_port_bridge_leave,
1802 .port_fdb_add = qca8k_port_fdb_add,
1803 .port_fdb_del = qca8k_port_fdb_del,
1804 .port_fdb_dump = qca8k_port_fdb_dump,
1805 .port_vlan_filtering = qca8k_port_vlan_filtering,
1806 .port_vlan_add = qca8k_port_vlan_add,
1807 .port_vlan_del = qca8k_port_vlan_del,
1808 .phylink_validate = qca8k_phylink_validate,
1809 .phylink_mac_link_state = qca8k_phylink_mac_link_state,
1810 .phylink_mac_config = qca8k_phylink_mac_config,
1811 .phylink_mac_link_down = qca8k_phylink_mac_link_down,
1812 .phylink_mac_link_up = qca8k_phylink_mac_link_up,
1813 .get_phy_flags = qca8k_get_phy_flags,
1816 static int qca8k_read_switch_id(struct qca8k_priv *priv)
1818 const struct qca8k_match_data *data;
1823 /* get the switches ID from the compatible */
1824 data = of_device_get_match_data(priv->dev);
1828 ret = qca8k_read(priv, QCA8K_REG_MASK_CTRL, &val);
1832 id = QCA8K_MASK_CTRL_DEVICE_ID(val & QCA8K_MASK_CTRL_DEVICE_ID_MASK);
1833 if (id != data->id) {
1834 dev_err(priv->dev, "Switch id detected %x but expected %x", id, data->id);
1838 priv->switch_id = id;
1840 /* Save revision to communicate to the internal PHY driver */
1841 priv->switch_revision = (val & QCA8K_MASK_CTRL_REV_ID_MASK);
1847 qca8k_sw_probe(struct mdio_device *mdiodev)
1849 struct qca8k_priv *priv;
1852 /* allocate the private data struct so that we can probe the switches
1855 priv = devm_kzalloc(&mdiodev->dev, sizeof(*priv), GFP_KERNEL);
1859 priv->bus = mdiodev->bus;
1860 priv->dev = &mdiodev->dev;
1862 priv->reset_gpio = devm_gpiod_get_optional(priv->dev, "reset",
1864 if (IS_ERR(priv->reset_gpio))
1865 return PTR_ERR(priv->reset_gpio);
1867 if (priv->reset_gpio) {
1868 gpiod_set_value_cansleep(priv->reset_gpio, 1);
1869 /* The active low duration must be greater than 10 ms
1870 * and checkpatch.pl wants 20 ms.
1873 gpiod_set_value_cansleep(priv->reset_gpio, 0);
1876 /* Check the detected switch id */
1877 ret = qca8k_read_switch_id(priv);
1881 priv->ds = devm_kzalloc(&mdiodev->dev, sizeof(*priv->ds), GFP_KERNEL);
1885 priv->ds->dev = &mdiodev->dev;
1886 priv->ds->num_ports = QCA8K_NUM_PORTS;
1887 priv->ds->priv = priv;
1888 priv->ops = qca8k_switch_ops;
1889 priv->ds->ops = &priv->ops;
1890 mutex_init(&priv->reg_mutex);
1891 dev_set_drvdata(&mdiodev->dev, priv);
1893 return dsa_register_switch(priv->ds);
1897 qca8k_sw_remove(struct mdio_device *mdiodev)
1899 struct qca8k_priv *priv = dev_get_drvdata(&mdiodev->dev);
1905 for (i = 0; i < QCA8K_NUM_PORTS; i++)
1906 qca8k_port_set_status(priv, i, 0);
1908 dsa_unregister_switch(priv->ds);
1910 dev_set_drvdata(&mdiodev->dev, NULL);
1913 static void qca8k_sw_shutdown(struct mdio_device *mdiodev)
1915 struct qca8k_priv *priv = dev_get_drvdata(&mdiodev->dev);
1920 dsa_switch_shutdown(priv->ds);
1922 dev_set_drvdata(&mdiodev->dev, NULL);
1925 #ifdef CONFIG_PM_SLEEP
1927 qca8k_set_pm(struct qca8k_priv *priv, int enable)
1931 for (i = 0; i < QCA8K_NUM_PORTS; i++) {
1932 if (!priv->port_sts[i].enabled)
1935 qca8k_port_set_status(priv, i, enable);
1939 static int qca8k_suspend(struct device *dev)
1941 struct qca8k_priv *priv = dev_get_drvdata(dev);
1943 qca8k_set_pm(priv, 0);
1945 return dsa_switch_suspend(priv->ds);
1948 static int qca8k_resume(struct device *dev)
1950 struct qca8k_priv *priv = dev_get_drvdata(dev);
1952 qca8k_set_pm(priv, 1);
1954 return dsa_switch_resume(priv->ds);
1956 #endif /* CONFIG_PM_SLEEP */
1958 static SIMPLE_DEV_PM_OPS(qca8k_pm_ops,
1959 qca8k_suspend, qca8k_resume);
1961 static const struct qca8k_match_data qca832x = {
1962 .id = QCA8K_ID_QCA8327,
1965 static const struct qca8k_match_data qca833x = {
1966 .id = QCA8K_ID_QCA8337,
1969 static const struct of_device_id qca8k_of_match[] = {
1970 { .compatible = "qca,qca8327", .data = &qca832x },
1971 { .compatible = "qca,qca8334", .data = &qca833x },
1972 { .compatible = "qca,qca8337", .data = &qca833x },
1976 static struct mdio_driver qca8kmdio_driver = {
1977 .probe = qca8k_sw_probe,
1978 .remove = qca8k_sw_remove,
1979 .shutdown = qca8k_sw_shutdown,
1982 .of_match_table = qca8k_of_match,
1983 .pm = &qca8k_pm_ops,
1987 mdio_module_driver(qca8kmdio_driver);
1989 MODULE_AUTHOR("Mathieu Olivari, John Crispin <john@phrozen.org>");
1990 MODULE_DESCRIPTION("Driver for QCA8K ethernet switch family");
1991 MODULE_LICENSE("GPL v2");
1992 MODULE_ALIAS("platform:qca8k");