1 // SPDX-License-Identifier: GPL-2.0
16 #include <linux/platform_data/microchip-ksz.h>
47 	regs = dev->info->regs;  in ksz8_ind_write8()
49 	mutex_lock(&dev->alu_mutex);  in ksz8_ind_write8()
56 	mutex_unlock(&dev->alu_mutex);  in ksz8_ind_write8()
113 	if (!dsa_is_cpu_port(dev->ds, port))  in ksz8_change_mtu()
118 	switch (dev->chip_id) {  in ksz8_change_mtu()
127 	return -EOPNOTSUPP;  in ksz8_change_mtu()
172 	masks = dev->info->masks;  in ksz8_r_mib_cnt()
173 	regs = dev->info->regs;  in ksz8_r_mib_cnt()
175 	ctrl_addr = addr + dev->info->reg_mib_cnt * port;  in ksz8_r_mib_cnt()
178 	mutex_lock(&dev->alu_mutex);  in ksz8_r_mib_cnt()
184 	for (loop = 2; loop > 0; loop--) {  in ksz8_r_mib_cnt()
195 	mutex_unlock(&dev->alu_mutex);  in ksz8_r_mib_cnt()
208 	masks = dev->info->masks;  in ksz8795_r_mib_pkt()
209 	regs = dev->info->regs;  in ksz8795_r_mib_pkt()
211 	addr -= dev->info->reg_mib_cnt;  in ksz8795_r_mib_pkt()
212 	ctrl_addr = (KSZ8795_MIB_TOTAL_RX_1 - KSZ8795_MIB_TOTAL_RX_0) * port;  in ksz8795_r_mib_pkt()
216 	mutex_lock(&dev->alu_mutex);  in ksz8795_r_mib_pkt()
222 	for (loop = 2; loop > 0; loop--) {  in ksz8795_r_mib_pkt()
247 	mutex_unlock(&dev->alu_mutex);  in ksz8795_r_mib_pkt()
259 	regs = dev->info->regs;  in ksz8863_r_mib_pkt()
261 	addr -= dev->info->reg_mib_cnt;  in ksz8863_r_mib_pkt()
267 	mutex_lock(&dev->alu_mutex);  in ksz8863_r_mib_pkt()
270 	mutex_unlock(&dev->alu_mutex);  in ksz8863_r_mib_pkt()
278 		data -= cur;  in ksz8863_r_mib_pkt()
309 	struct ksz_port_mib *mib = &dev->ports[port].mib;  in ksz8_port_init_cnt()
319 	mib->cnt_ptr = 0;  in ksz8_port_init_cnt()
322 	while (mib->cnt_ptr < dev->info->reg_mib_cnt) {  in ksz8_port_init_cnt()
323 		dev->dev_ops->r_mib_cnt(dev, port, mib->cnt_ptr,  in ksz8_port_init_cnt()
324 					&mib->counters[mib->cnt_ptr]);  in ksz8_port_init_cnt()
325 		++mib->cnt_ptr;  in ksz8_port_init_cnt()
329 	dropped = &mib->counters[dev->info->mib_cnt];  in ksz8_port_init_cnt()
332 	while (mib->cnt_ptr < dev->info->mib_cnt) {  in ksz8_port_init_cnt()
333 		dev->dev_ops->r_mib_pkt(dev, port, mib->cnt_ptr,  in ksz8_port_init_cnt()
334 					dropped, &mib->counters[mib->cnt_ptr]);  in ksz8_port_init_cnt()
335 		++mib->cnt_ptr;  in ksz8_port_init_cnt()
345 	regs = dev->info->regs;  in ksz8_r_table()
349 	mutex_lock(&dev->alu_mutex);  in ksz8_r_table()
356 	mutex_unlock(&dev->alu_mutex);  in ksz8_r_table()
367 	regs = dev->info->regs;  in ksz8_w_table()
371 	mutex_lock(&dev->alu_mutex);  in ksz8_w_table()
378 	mutex_unlock(&dev->alu_mutex);  in ksz8_w_table()
389 	masks = dev->info->masks;  in ksz8_valid_dyn_entry()
390 	regs = dev->info->regs;  in ksz8_valid_dyn_entry()
394 		timeout--;  in ksz8_valid_dyn_entry()
399 		return -EAGAIN;  in ksz8_valid_dyn_entry()
406 			return -ENXIO;  in ksz8_valid_dyn_entry()
422 	shifts = dev->info->shifts;  in ksz8_r_dyn_mac_table()
423 	masks = dev->info->masks;  in ksz8_r_dyn_mac_table()
424 	regs = dev->info->regs;  in ksz8_r_dyn_mac_table()
428 	mutex_lock(&dev->alu_mutex);  in ksz8_r_dyn_mac_table()
432 	if (rc == -EAGAIN) {  in ksz8_r_dyn_mac_table()
435 	} else if (rc == -ENXIO) {  in ksz8_r_dyn_mac_table()
469 	mutex_unlock(&dev->alu_mutex);  in ksz8_r_dyn_mac_table()
483 	shifts = dev->info->shifts;  in ksz8_r_sta_mac_table()
484 	masks = dev->info->masks;  in ksz8_r_sta_mac_table()
499 	alu->mac[5] = (u8)data_lo;  in ksz8_r_sta_mac_table()
500 	alu->mac[4] = (u8)(data_lo >> 8);  in ksz8_r_sta_mac_table()
501 	alu->mac[3] = (u8)(data_lo >> 16);  in ksz8_r_sta_mac_table()
502 	alu->mac[2] = (u8)(data_lo >> 24);  in ksz8_r_sta_mac_table()
503 	alu->mac[1] = (u8)data_hi;  in ksz8_r_sta_mac_table()
504 	alu->mac[0] = (u8)(data_hi >> 8);  in ksz8_r_sta_mac_table()
505 	alu->port_forward =  in ksz8_r_sta_mac_table()
508 	alu->is_override = (data_hi & masks[STATIC_MAC_TABLE_OVERRIDE]) ? 1 : 0;  in ksz8_r_sta_mac_table()
516 	alu->is_static = true;  in ksz8_r_sta_mac_table()
517 	alu->is_use_fid = (data_hi & masks[STATIC_MAC_TABLE_USE_FID]) ? 1 : 0;  in ksz8_r_sta_mac_table()
518 	alu->fid = (data_hi & masks[STATIC_MAC_TABLE_FID]) >>  in ksz8_r_sta_mac_table()
534 	shifts = dev->info->shifts;  in ksz8_w_sta_mac_table()
535 	masks = dev->info->masks;  in ksz8_w_sta_mac_table()
537 	data_lo = ((u32)alu->mac[2] << 24) |  in ksz8_w_sta_mac_table()
538 		((u32)alu->mac[3] << 16) |  in ksz8_w_sta_mac_table()
539 		((u32)alu->mac[4] << 8) | alu->mac[5];  in ksz8_w_sta_mac_table()
540 	data_hi = ((u32)alu->mac[0] << 8) | alu->mac[1];  in ksz8_w_sta_mac_table()
541 	data_hi |= (u32)alu->port_forward << shifts[STATIC_MAC_FWD_PORTS];  in ksz8_w_sta_mac_table()
543 	if (alu->is_override)  in ksz8_w_sta_mac_table()
545 	if (alu->is_use_fid) {  in ksz8_w_sta_mac_table()
547 		data_hi |= (u32)alu->fid << shifts[STATIC_MAC_FID];  in ksz8_w_sta_mac_table()
549 	if (alu->is_static)  in ksz8_w_sta_mac_table()
565 	shifts = dev->info->shifts;  in ksz8_from_vlan()
566 	masks = dev->info->masks;  in ksz8_from_vlan()
580 	shifts = dev->info->shifts;  in ksz8_to_vlan()
581 	masks = dev->info->masks;  in ksz8_to_vlan()
595 	shifts = dev->info->shifts;  in ksz8_r_vlan_entries()
600 		dev->vlan_cache[addr + i].table[0] = (u16)data;  in ksz8_r_vlan_entries()
631 	dev->vlan_cache[vid].table[0] = vlan;  in ksz8_w_vlan_table()
636  * ksz8_r_phy_ctrl - Translates and reads from the SMI interface to a MIIM PHY
650 	const u16 *regs = dev->info->regs;  in ksz8_r_phy_ctrl()
689 	regs = dev->info->regs;  in ksz8_r_phy()
832  * ksz8_w_phy_ctrl - Translates and writes to the SMI interface from a MIIM PHY
870 	regs = dev->info->regs;  in ksz8_w_phy()
910 			/* Fiber port does not support auto-negotiation. */  in ksz8_w_phy()
911 			if (dev->ports[p].fiber)  in ksz8_w_phy()
1022 	data |= (member & dev->port_mask);  in ksz8_cfg_port_member()
1032 	regs = dev->info->regs;  in ksz8_flush_dyn_mac_table()
1034 	if ((uint)port < dev->info->port_cnt) {  in ksz8_flush_dyn_mac_table()
1040 		cnt = dev->info->port_cnt;  in ksz8_flush_dyn_mac_table()
1090 	for (index = 0; index < dev->info->num_statics; index++) {  in ksz8_add_sta_mac()
1108 	if (index == dev->info->num_statics && !empty)  in ksz8_add_sta_mac()
1109 		return -ENOSPC;  in ksz8_add_sta_mac()
1112 	if (index == dev->info->num_statics) {  in ksz8_add_sta_mac()
1113 		index = empty - 1;  in ksz8_add_sta_mac()
1135 	for (index = 0; index < dev->info->num_statics; index++) {  in ksz8_del_sta_mac()
1149 	if (index == dev->info->num_statics)  in ksz8_del_sta_mac()
1163 	return ksz8_add_sta_mac(dev, port, mdb->addr, mdb->vid);  in ksz8_mdb_add()
1169 	return ksz8_del_sta_mac(dev, port, mdb->addr, mdb->vid);  in ksz8_mdb_del()
1188 		return -ENOTSUPP;  in ksz8_port_vlan_filtering()
1194 	for (port = 0; port < dev->phy_port_cnt; ++port)  in ksz8_port_vlan_filtering()
1205 			0x03 << (4 - 2 * port), state);  in ksz8_port_enable_pvid()
1215 	bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;  in ksz8_port_vlan_add()
1216 	struct ksz_port *p = &dev->ports[port];  in ksz8_port_vlan_add()
1221 		return -ENOTSUPP;  in ksz8_port_vlan_add()
1228 	if (untagged != p->remove_tag && vlan->vid != 0 &&  in ksz8_port_vlan_add()
1229 	    port != dev->cpu_port) {  in ksz8_port_vlan_add()
1236 		for (vid = 1; vid < dev->info->num_vlans; ++vid) {  in ksz8_port_vlan_add()
1238 			if (vid == vlan->vid)  in ksz8_port_vlan_add()
1241 			ksz8_from_vlan(dev, dev->vlan_cache[vid].table[0],  in ksz8_port_vlan_add()
1244 				return -EINVAL;  in ksz8_port_vlan_add()
1248 		p->remove_tag = untagged;  in ksz8_port_vlan_add()
1251 	ksz8_r_vlan_table(dev, vlan->vid, &data);  in ksz8_port_vlan_add()
1263 	ksz8_w_vlan_table(dev, vlan->vid, data);  in ksz8_port_vlan_add()
1266 	if (vlan->flags & BRIDGE_VLAN_INFO_PVID)  in ksz8_port_vlan_add()
1267 		new_pvid = vlan->vid;  in ksz8_port_vlan_add()
1290 		return -ENOTSUPP;  in ksz8_port_vlan_del()
1295 	ksz8_r_vlan_table(dev, vlan->vid, &data);  in ksz8_port_vlan_del()
1307 	ksz8_w_vlan_table(dev, vlan->vid, data);  in ksz8_port_vlan_del()
1309 	if (pvid == vlan->vid)  in ksz8_port_vlan_del()
1321 		dev->mirror_rx |= BIT(port);  in ksz8_port_mirror_add()
1324 		dev->mirror_tx |= BIT(port);  in ksz8_port_mirror_add()
1330 	if (dev->mirror_rx || dev->mirror_tx)  in ksz8_port_mirror_add()
1331 		ksz_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL,  in ksz8_port_mirror_add()
1342 	if (mirror->ingress) {  in ksz8_port_mirror_del()
1344 		dev->mirror_rx &= ~BIT(port);  in ksz8_port_mirror_del()
1347 		dev->mirror_tx &= ~BIT(port);  in ksz8_port_mirror_del()
1352 	if (!dev->mirror_rx && !dev->mirror_tx)  in ksz8_port_mirror_del()
1353 		ksz_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL,  in ksz8_port_mirror_del()
1359 	struct ksz_port *p = &dev->ports[port];  in ksz8795_cpu_interface_select()
1364 	if (!p->interface && dev->compat_interface) {  in ksz8795_cpu_interface_select()
1365 		dev_warn(dev->dev,  in ksz8795_cpu_interface_select()
1366 			 "Using legacy switch \"phy-mode\" property, because it is missing on port %d node. "  in ksz8795_cpu_interface_select()
1369 		p->interface = dev->compat_interface;  in ksz8795_cpu_interface_select()
1375 	struct dsa_switch *ds = dev->ds;  in ksz8_port_setup()
1379 	masks = dev->info->masks;  in ksz8_port_setup()
1407 	struct dsa_port *cpu_dp = dsa_to_port(dev->ds, dev->cpu_port);  in ksz88x3_config_rmii_clk()
1413 	rmii_clk_internal = of_property_read_bool(cpu_dp->dn,  in ksz88x3_config_rmii_clk()
1414 						  "microchip,rmii-clk-internal");  in ksz88x3_config_rmii_clk()
1422 	struct ksz_device *dev = ds->priv;  in ksz8_config_cpu_port()
1429 	masks = dev->info->masks;  in ksz8_config_cpu_port()
1430 	regs = dev->info->regs;  in ksz8_config_cpu_port()
1434 	ksz8_port_setup(dev, dev->cpu_port, true);  in ksz8_config_cpu_port()
1436 	ksz8795_cpu_interface_select(dev, dev->cpu_port);  in ksz8_config_cpu_port()
1439 	for (i = 0; i < dev->phy_port_cnt; i++) {  in ksz8_config_cpu_port()
1442 	for (i = 0; i < dev->phy_port_cnt; i++) {  in ksz8_config_cpu_port()
1443 		p = &dev->ports[i];  in ksz8_config_cpu_port()
1448 				p->fiber = 1;  in ksz8_config_cpu_port()
1450 		if (p->fiber)  in ksz8_config_cpu_port()
1460  * ksz8_phy_port_link_up - Configures ports with integrated PHYs
1464  * @tx_pause: If true, enables transmit pause.
1465  * @rx_pause: If true, enables receive pause.
1474  *    "1 = will always enable full-duplex flow control on the port, regardless
1476  *     0 = full-duplex flow control is enabled based on AN result."
1479  * - If PORT_FORCE_FLOW_CTRL is set to 1, the switch will ignore AN results and
1481  * - If PORT_FORCE_FLOW_CTRL is set to 0, the switch will enable or disable
1486  * advertise pause support. While such a configuration is not currently
1493 	const u16 *regs = dev->info->regs;  in ksz8_phy_port_link_up()
1497 	 * asymmetric pause control. However, since a single bit is used to  in ksz8_phy_port_link_up()
1498 	 * control both RX and TX pause, we can't enforce asymmetric pause  in ksz8_phy_port_link_up()
1499 	 * control - both TX and RX pause will be either enabled or disabled  in ksz8_phy_port_link_up()
1502 	 * If auto-negotiation is enabled, we usually allow the flow control to  in ksz8_phy_port_link_up()
1503 	 * be determined by the auto-negotiation process based on the  in ksz8_phy_port_link_up()
1506 	 * ignoring the auto-negotiation result. Thus, even in auto-negotiation  in ksz8_phy_port_link_up()
1510 	 * In the absence of pause auto-negotiation, we will enforce symmetric  in ksz8_phy_port_link_up()
1511 	 * pause control for both variants of switches - KSZ8873 and KSZ8795.  in ksz8_phy_port_link_up()
1513 	 * Autoneg Pause Autoneg      rx,tx	PORT_FORCE_FLOW_CTRL  in ksz8_phy_port_link_up()
1521 	if (dev->ports[port].manual_flow && tx_pause)  in ksz8_phy_port_link_up()
1528  * ksz8_cpu_port_link_up - Configures the CPU port of the switch.
1532  * @tx_pause: If true, enables transmit pause.
1533  * @rx_pause: If true, enables receive pause.
1543 	const u16 *regs = dev->info->regs;  in ksz8_cpu_port_link_up()
1574 	if (dev->cpu_port == port)  in ksz8_phylink_mac_link_up()
1576 	else if (dev->info->internal_phy[port])  in ksz8_phylink_mac_link_up()
1582 	struct ksz_device *dev = ds->priv;  in ksz8_handle_global_errata()
1591 	if (dev->info->ksz87xx_eee_link_erratum)  in ksz8_handle_global_errata()
1606 	alu.port_forward = dev->info->cpu_ports;  in ksz8_enable_stp_addr()
1613 	struct ksz_device *dev = ds->priv;  in ksz8_setup()
1616 	ds->mtu_enforcement_ingress = true;  in ksz8_setup()
1621 	ds->untag_bridge_pvid = true;  in ksz8_setup()
1626 	ds->vlan_filtering_is_global = true;  in ksz8_setup()
1650 	for (i = 0; i < (dev->info->num_vlans / 4); i++)  in ksz8_setup()
1659 	config->mac_capabilities = MAC_10 | MAC_100;  in ksz8_get_caps()
1662 	 * "Port 1 does not respond to received flow control PAUSE frames"  in ksz8_get_caps()
1663 	 * So, disable Pause support on "Port 1" (port == 0) for all ksz88x3  in ksz8_get_caps()
1667 		config->mac_capabilities |= MAC_SYM_PAUSE;  in ksz8_get_caps()
1669 	/* Asym pause is not supported on KSZ8863 and KSZ8873 */  in ksz8_get_caps()
1671 		config->mac_capabilities |= MAC_ASYM_PAUSE;  in ksz8_get_caps()
1681 	dev->cpu_port = fls(dev->info->cpu_ports) - 1;  in ksz8_switch_init()
1682 	dev->phy_port_cnt = dev->info->port_cnt - 1;  in ksz8_switch_init()
1683 	dev->port_mask = (BIT(dev->phy_port_cnt) - 1) | dev->info->cpu_ports;  in ksz8_switch_init()