| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Texas Instruments N-Port Ethernet Switch Address Lookup Engine |
| * |
| * Copyright (C) 2012 Texas Instruments |
| * |
| */ |
| #include <linux/bitmap.h> |
| #include <linux/if_vlan.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/seq_file.h> |
| #include <linux/slab.h> |
| #include <linux/err.h> |
| #include <linux/io.h> |
| #include <linux/stat.h> |
| #include <linux/sysfs.h> |
| #include <linux/etherdevice.h> |
| |
| #include "cpsw_ale.h" |
| |
| #define BITMASK(bits) (BIT(bits) - 1) |
| |
| #define ALE_VERSION_MAJOR(rev, mask) (((rev) >> 8) & (mask)) |
| #define ALE_VERSION_MINOR(rev) (rev & 0xff) |
| #define ALE_VERSION_1R3 0x0103 |
| #define ALE_VERSION_1R4 0x0104 |
| |
| /* ALE Registers */ |
| #define ALE_IDVER 0x00 |
| #define ALE_STATUS 0x04 |
| #define ALE_CONTROL 0x08 |
| #define ALE_PRESCALE 0x10 |
| #define ALE_UNKNOWNVLAN 0x18 |
| #define ALE_TABLE_CONTROL 0x20 |
| #define ALE_TABLE 0x34 |
| #define ALE_PORTCTL 0x40 |
| |
| /* ALE NetCP NU switch specific Registers */ |
| #define ALE_UNKNOWNVLAN_MEMBER 0x90 |
| #define ALE_UNKNOWNVLAN_UNREG_MCAST_FLOOD 0x94 |
| #define ALE_UNKNOWNVLAN_REG_MCAST_FLOOD 0x98 |
| #define ALE_UNKNOWNVLAN_FORCE_UNTAG_EGRESS 0x9C |
| #define ALE_VLAN_MASK_MUX(reg) (0xc0 + (0x4 * (reg))) |
| |
| #define AM65_CPSW_ALE_THREAD_DEF_REG 0x134 |
| |
| #define ALE_TABLE_WRITE BIT(31) |
| |
| #define ALE_TYPE_FREE 0 |
| #define ALE_TYPE_ADDR 1 |
| #define ALE_TYPE_VLAN 2 |
| #define ALE_TYPE_VLAN_ADDR 3 |
| |
| #define ALE_UCAST_PERSISTANT 0 |
| #define ALE_UCAST_UNTOUCHED 1 |
| #define ALE_UCAST_OUI 2 |
| #define ALE_UCAST_TOUCHED 3 |
| |
| #define ALE_TABLE_SIZE_MULTIPLIER 1024 |
| #define ALE_STATUS_SIZE_MASK 0x1f |
| #define ALE_TABLE_SIZE_DEFAULT 64 |
| |
| static inline int cpsw_ale_get_field(u32 *ale_entry, u32 start, u32 bits) |
| { |
| int idx; |
| |
| idx = start / 32; |
| start -= idx * 32; |
| idx = 2 - idx; /* flip */ |
| return (ale_entry[idx] >> start) & BITMASK(bits); |
| } |
| |
| static inline void cpsw_ale_set_field(u32 *ale_entry, u32 start, u32 bits, |
| u32 value) |
| { |
| int idx; |
| |
| value &= BITMASK(bits); |
| idx = start / 32; |
| start -= idx * 32; |
| idx = 2 - idx; /* flip */ |
| ale_entry[idx] &= ~(BITMASK(bits) << start); |
| ale_entry[idx] |= (value << start); |
| } |
| |
| #define DEFINE_ALE_FIELD(name, start, bits) \ |
| static inline int cpsw_ale_get_##name(u32 *ale_entry) \ |
| { \ |
| return cpsw_ale_get_field(ale_entry, start, bits); \ |
| } \ |
| static inline void cpsw_ale_set_##name(u32 *ale_entry, u32 value) \ |
| { \ |
| cpsw_ale_set_field(ale_entry, start, bits, value); \ |
| } |
| |
| #define DEFINE_ALE_FIELD1(name, start) \ |
| static inline int cpsw_ale_get_##name(u32 *ale_entry, u32 bits) \ |
| { \ |
| return cpsw_ale_get_field(ale_entry, start, bits); \ |
| } \ |
| static inline void cpsw_ale_set_##name(u32 *ale_entry, u32 value, \ |
| u32 bits) \ |
| { \ |
| cpsw_ale_set_field(ale_entry, start, bits, value); \ |
| } |
| |
| DEFINE_ALE_FIELD(entry_type, 60, 2) |
| DEFINE_ALE_FIELD(vlan_id, 48, 12) |
| DEFINE_ALE_FIELD(mcast_state, 62, 2) |
| DEFINE_ALE_FIELD1(port_mask, 66) |
| DEFINE_ALE_FIELD(super, 65, 1) |
| DEFINE_ALE_FIELD(ucast_type, 62, 2) |
| DEFINE_ALE_FIELD1(port_num, 66) |
| DEFINE_ALE_FIELD(blocked, 65, 1) |
| DEFINE_ALE_FIELD(secure, 64, 1) |
| DEFINE_ALE_FIELD1(vlan_untag_force, 24) |
| DEFINE_ALE_FIELD1(vlan_reg_mcast, 16) |
| DEFINE_ALE_FIELD1(vlan_unreg_mcast, 8) |
| DEFINE_ALE_FIELD1(vlan_member_list, 0) |
| DEFINE_ALE_FIELD(mcast, 40, 1) |
| /* ALE NetCP nu switch specific */ |
| DEFINE_ALE_FIELD(vlan_unreg_mcast_idx, 20, 3) |
| DEFINE_ALE_FIELD(vlan_reg_mcast_idx, 44, 3) |
| |
| #define NU_VLAN_UNREG_MCAST_IDX 1 |
| |
| /* The MAC address field in the ALE entry cannot be macroized as above */ |
| static inline void cpsw_ale_get_addr(u32 *ale_entry, u8 *addr) |
| { |
| int i; |
| |
| for (i = 0; i < 6; i++) |
| addr[i] = cpsw_ale_get_field(ale_entry, 40 - 8*i, 8); |
| } |
| |
| static inline void cpsw_ale_set_addr(u32 *ale_entry, const u8 *addr) |
| { |
| int i; |
| |
| for (i = 0; i < 6; i++) |
| cpsw_ale_set_field(ale_entry, 40 - 8*i, 8, addr[i]); |
| } |
| |
| static int cpsw_ale_read(struct cpsw_ale *ale, int idx, u32 *ale_entry) |
| { |
| int i; |
| |
| WARN_ON(idx > ale->params.ale_entries); |
| |
| writel_relaxed(idx, ale->params.ale_regs + ALE_TABLE_CONTROL); |
| |
| for (i = 0; i < ALE_ENTRY_WORDS; i++) |
| ale_entry[i] = readl_relaxed(ale->params.ale_regs + |
| ALE_TABLE + 4 * i); |
| |
| return idx; |
| } |
| |
| static int cpsw_ale_write(struct cpsw_ale *ale, int idx, u32 *ale_entry) |
| { |
| int i; |
| |
| WARN_ON(idx > ale->params.ale_entries); |
| |
| for (i = 0; i < ALE_ENTRY_WORDS; i++) |
| writel_relaxed(ale_entry[i], ale->params.ale_regs + |
| ALE_TABLE + 4 * i); |
| |
| writel_relaxed(idx | ALE_TABLE_WRITE, ale->params.ale_regs + |
| ALE_TABLE_CONTROL); |
| |
| return idx; |
| } |
| |
| static int cpsw_ale_match_addr(struct cpsw_ale *ale, const u8 *addr, u16 vid) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS]; |
| int type, idx; |
| |
| for (idx = 0; idx < ale->params.ale_entries; idx++) { |
| u8 entry_addr[6]; |
| |
| cpsw_ale_read(ale, idx, ale_entry); |
| type = cpsw_ale_get_entry_type(ale_entry); |
| if (type != ALE_TYPE_ADDR && type != ALE_TYPE_VLAN_ADDR) |
| continue; |
| if (cpsw_ale_get_vlan_id(ale_entry) != vid) |
| continue; |
| cpsw_ale_get_addr(ale_entry, entry_addr); |
| if (ether_addr_equal(entry_addr, addr)) |
| return idx; |
| } |
| return -ENOENT; |
| } |
| |
| static int cpsw_ale_match_vlan(struct cpsw_ale *ale, u16 vid) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS]; |
| int type, idx; |
| |
| for (idx = 0; idx < ale->params.ale_entries; idx++) { |
| cpsw_ale_read(ale, idx, ale_entry); |
| type = cpsw_ale_get_entry_type(ale_entry); |
| if (type != ALE_TYPE_VLAN) |
| continue; |
| if (cpsw_ale_get_vlan_id(ale_entry) == vid) |
| return idx; |
| } |
| return -ENOENT; |
| } |
| |
| static int cpsw_ale_match_free(struct cpsw_ale *ale) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS]; |
| int type, idx; |
| |
| for (idx = 0; idx < ale->params.ale_entries; idx++) { |
| cpsw_ale_read(ale, idx, ale_entry); |
| type = cpsw_ale_get_entry_type(ale_entry); |
| if (type == ALE_TYPE_FREE) |
| return idx; |
| } |
| return -ENOENT; |
| } |
| |
| static int cpsw_ale_find_ageable(struct cpsw_ale *ale) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS]; |
| int type, idx; |
| |
| for (idx = 0; idx < ale->params.ale_entries; idx++) { |
| cpsw_ale_read(ale, idx, ale_entry); |
| type = cpsw_ale_get_entry_type(ale_entry); |
| if (type != ALE_TYPE_ADDR && type != ALE_TYPE_VLAN_ADDR) |
| continue; |
| if (cpsw_ale_get_mcast(ale_entry)) |
| continue; |
| type = cpsw_ale_get_ucast_type(ale_entry); |
| if (type != ALE_UCAST_PERSISTANT && |
| type != ALE_UCAST_OUI) |
| return idx; |
| } |
| return -ENOENT; |
| } |
| |
| static void cpsw_ale_flush_mcast(struct cpsw_ale *ale, u32 *ale_entry, |
| int port_mask) |
| { |
| int mask; |
| |
| mask = cpsw_ale_get_port_mask(ale_entry, |
| ale->port_mask_bits); |
| if ((mask & port_mask) == 0) |
| return; /* ports dont intersect, not interested */ |
| mask &= ~port_mask; |
| |
| /* free if only remaining port is host port */ |
| if (mask) |
| cpsw_ale_set_port_mask(ale_entry, mask, |
| ale->port_mask_bits); |
| else |
| cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE); |
| } |
| |
| int cpsw_ale_flush_multicast(struct cpsw_ale *ale, int port_mask, int vid) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS]; |
| int ret, idx; |
| |
| for (idx = 0; idx < ale->params.ale_entries; idx++) { |
| cpsw_ale_read(ale, idx, ale_entry); |
| ret = cpsw_ale_get_entry_type(ale_entry); |
| if (ret != ALE_TYPE_ADDR && ret != ALE_TYPE_VLAN_ADDR) |
| continue; |
| |
| /* if vid passed is -1 then remove all multicast entry from |
| * the table irrespective of vlan id, if a valid vlan id is |
| * passed then remove only multicast added to that vlan id. |
| * if vlan id doesn't match then move on to next entry. |
| */ |
| if (vid != -1 && cpsw_ale_get_vlan_id(ale_entry) != vid) |
| continue; |
| |
| if (cpsw_ale_get_mcast(ale_entry)) { |
| u8 addr[6]; |
| |
| if (cpsw_ale_get_super(ale_entry)) |
| continue; |
| |
| cpsw_ale_get_addr(ale_entry, addr); |
| if (!is_broadcast_ether_addr(addr)) |
| cpsw_ale_flush_mcast(ale, ale_entry, port_mask); |
| } |
| |
| cpsw_ale_write(ale, idx, ale_entry); |
| } |
| return 0; |
| } |
| |
| static inline void cpsw_ale_set_vlan_entry_type(u32 *ale_entry, |
| int flags, u16 vid) |
| { |
| if (flags & ALE_VLAN) { |
| cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_VLAN_ADDR); |
| cpsw_ale_set_vlan_id(ale_entry, vid); |
| } else { |
| cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_ADDR); |
| } |
| } |
| |
| int cpsw_ale_add_ucast(struct cpsw_ale *ale, const u8 *addr, int port, |
| int flags, u16 vid) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; |
| int idx; |
| |
| cpsw_ale_set_vlan_entry_type(ale_entry, flags, vid); |
| |
| cpsw_ale_set_addr(ale_entry, addr); |
| cpsw_ale_set_ucast_type(ale_entry, ALE_UCAST_PERSISTANT); |
| cpsw_ale_set_secure(ale_entry, (flags & ALE_SECURE) ? 1 : 0); |
| cpsw_ale_set_blocked(ale_entry, (flags & ALE_BLOCKED) ? 1 : 0); |
| cpsw_ale_set_port_num(ale_entry, port, ale->port_num_bits); |
| |
| idx = cpsw_ale_match_addr(ale, addr, (flags & ALE_VLAN) ? vid : 0); |
| if (idx < 0) |
| idx = cpsw_ale_match_free(ale); |
| if (idx < 0) |
| idx = cpsw_ale_find_ageable(ale); |
| if (idx < 0) |
| return -ENOMEM; |
| |
| cpsw_ale_write(ale, idx, ale_entry); |
| return 0; |
| } |
| |
| int cpsw_ale_del_ucast(struct cpsw_ale *ale, const u8 *addr, int port, |
| int flags, u16 vid) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; |
| int idx; |
| |
| idx = cpsw_ale_match_addr(ale, addr, (flags & ALE_VLAN) ? vid : 0); |
| if (idx < 0) |
| return -ENOENT; |
| |
| cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE); |
| cpsw_ale_write(ale, idx, ale_entry); |
| return 0; |
| } |
| |
| int cpsw_ale_add_mcast(struct cpsw_ale *ale, const u8 *addr, int port_mask, |
| int flags, u16 vid, int mcast_state) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; |
| int idx, mask; |
| |
| idx = cpsw_ale_match_addr(ale, addr, (flags & ALE_VLAN) ? vid : 0); |
| if (idx >= 0) |
| cpsw_ale_read(ale, idx, ale_entry); |
| |
| cpsw_ale_set_vlan_entry_type(ale_entry, flags, vid); |
| |
| cpsw_ale_set_addr(ale_entry, addr); |
| cpsw_ale_set_super(ale_entry, (flags & ALE_SUPER) ? 1 : 0); |
| cpsw_ale_set_mcast_state(ale_entry, mcast_state); |
| |
| mask = cpsw_ale_get_port_mask(ale_entry, |
| ale->port_mask_bits); |
| port_mask |= mask; |
| cpsw_ale_set_port_mask(ale_entry, port_mask, |
| ale->port_mask_bits); |
| |
| if (idx < 0) |
| idx = cpsw_ale_match_free(ale); |
| if (idx < 0) |
| idx = cpsw_ale_find_ageable(ale); |
| if (idx < 0) |
| return -ENOMEM; |
| |
| cpsw_ale_write(ale, idx, ale_entry); |
| return 0; |
| } |
| |
| int cpsw_ale_del_mcast(struct cpsw_ale *ale, const u8 *addr, int port_mask, |
| int flags, u16 vid) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; |
| int mcast_members = 0; |
| int idx; |
| |
| idx = cpsw_ale_match_addr(ale, addr, (flags & ALE_VLAN) ? vid : 0); |
| if (idx < 0) |
| return -ENOENT; |
| |
| cpsw_ale_read(ale, idx, ale_entry); |
| |
| if (port_mask) { |
| mcast_members = cpsw_ale_get_port_mask(ale_entry, |
| ale->port_mask_bits); |
| mcast_members &= ~port_mask; |
| } |
| |
| if (mcast_members) |
| cpsw_ale_set_port_mask(ale_entry, mcast_members, |
| ale->port_mask_bits); |
| else |
| cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE); |
| |
| cpsw_ale_write(ale, idx, ale_entry); |
| return 0; |
| } |
| |
| /* ALE NetCP NU switch specific vlan functions */ |
| static void cpsw_ale_set_vlan_mcast(struct cpsw_ale *ale, u32 *ale_entry, |
| int reg_mcast, int unreg_mcast) |
| { |
| int idx; |
| |
| /* Set VLAN registered multicast flood mask */ |
| idx = cpsw_ale_get_vlan_reg_mcast_idx(ale_entry); |
| writel(reg_mcast, ale->params.ale_regs + ALE_VLAN_MASK_MUX(idx)); |
| |
| /* Set VLAN unregistered multicast flood mask */ |
| idx = cpsw_ale_get_vlan_unreg_mcast_idx(ale_entry); |
| writel(unreg_mcast, ale->params.ale_regs + ALE_VLAN_MASK_MUX(idx)); |
| } |
| |
| static void cpsw_ale_set_vlan_untag(struct cpsw_ale *ale, u32 *ale_entry, |
| u16 vid, int untag_mask) |
| { |
| cpsw_ale_set_vlan_untag_force(ale_entry, |
| untag_mask, ale->vlan_field_bits); |
| if (untag_mask & ALE_PORT_HOST) |
| bitmap_set(ale->p0_untag_vid_mask, vid, 1); |
| else |
| bitmap_clear(ale->p0_untag_vid_mask, vid, 1); |
| } |
| |
| int cpsw_ale_add_vlan(struct cpsw_ale *ale, u16 vid, int port_mask, int untag, |
| int reg_mcast, int unreg_mcast) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; |
| int idx; |
| |
| idx = cpsw_ale_match_vlan(ale, vid); |
| if (idx >= 0) |
| cpsw_ale_read(ale, idx, ale_entry); |
| |
| cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_VLAN); |
| cpsw_ale_set_vlan_id(ale_entry, vid); |
| cpsw_ale_set_vlan_untag(ale, ale_entry, vid, untag); |
| |
| if (!ale->params.nu_switch_ale) { |
| cpsw_ale_set_vlan_reg_mcast(ale_entry, reg_mcast, |
| ale->vlan_field_bits); |
| cpsw_ale_set_vlan_unreg_mcast(ale_entry, unreg_mcast, |
| ale->vlan_field_bits); |
| } else { |
| cpsw_ale_set_vlan_unreg_mcast_idx(ale_entry, |
| NU_VLAN_UNREG_MCAST_IDX); |
| cpsw_ale_set_vlan_mcast(ale, ale_entry, reg_mcast, unreg_mcast); |
| } |
| cpsw_ale_set_vlan_member_list(ale_entry, port_mask, |
| ale->vlan_field_bits); |
| |
| if (idx < 0) |
| idx = cpsw_ale_match_free(ale); |
| if (idx < 0) |
| idx = cpsw_ale_find_ageable(ale); |
| if (idx < 0) |
| return -ENOMEM; |
| |
| cpsw_ale_write(ale, idx, ale_entry); |
| return 0; |
| } |
| |
| static void cpsw_ale_del_vlan_modify(struct cpsw_ale *ale, u32 *ale_entry, |
| u16 vid, int port_mask) |
| { |
| int reg_mcast, unreg_mcast; |
| int members, untag; |
| |
| members = cpsw_ale_get_vlan_member_list(ale_entry, |
| ale->vlan_field_bits); |
| members &= ~port_mask; |
| if (!members) { |
| cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE); |
| return; |
| } |
| |
| untag = cpsw_ale_get_vlan_untag_force(ale_entry, |
| ale->vlan_field_bits); |
| reg_mcast = cpsw_ale_get_vlan_reg_mcast(ale_entry, |
| ale->vlan_field_bits); |
| unreg_mcast = cpsw_ale_get_vlan_unreg_mcast(ale_entry, |
| ale->vlan_field_bits); |
| untag &= members; |
| reg_mcast &= members; |
| unreg_mcast &= members; |
| |
| cpsw_ale_set_vlan_untag(ale, ale_entry, vid, untag); |
| |
| if (!ale->params.nu_switch_ale) { |
| cpsw_ale_set_vlan_reg_mcast(ale_entry, reg_mcast, |
| ale->vlan_field_bits); |
| cpsw_ale_set_vlan_unreg_mcast(ale_entry, unreg_mcast, |
| ale->vlan_field_bits); |
| } else { |
| cpsw_ale_set_vlan_mcast(ale, ale_entry, reg_mcast, |
| unreg_mcast); |
| } |
| cpsw_ale_set_vlan_member_list(ale_entry, members, |
| ale->vlan_field_bits); |
| } |
| |
| int cpsw_ale_del_vlan(struct cpsw_ale *ale, u16 vid, int port_mask) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; |
| int idx; |
| |
| idx = cpsw_ale_match_vlan(ale, vid); |
| if (idx < 0) |
| return -ENOENT; |
| |
| cpsw_ale_read(ale, idx, ale_entry); |
| |
| if (port_mask) { |
| cpsw_ale_del_vlan_modify(ale, ale_entry, vid, port_mask); |
| } else { |
| cpsw_ale_set_vlan_untag(ale, ale_entry, vid, 0); |
| cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE); |
| } |
| |
| cpsw_ale_write(ale, idx, ale_entry); |
| |
| return 0; |
| } |
| |
| int cpsw_ale_vlan_add_modify(struct cpsw_ale *ale, u16 vid, int port_mask, |
| int untag_mask, int reg_mask, int unreg_mask) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; |
| int reg_mcast_members, unreg_mcast_members; |
| int vlan_members, untag_members; |
| int idx, ret = 0; |
| |
| idx = cpsw_ale_match_vlan(ale, vid); |
| if (idx >= 0) |
| cpsw_ale_read(ale, idx, ale_entry); |
| |
| vlan_members = cpsw_ale_get_vlan_member_list(ale_entry, |
| ale->vlan_field_bits); |
| reg_mcast_members = cpsw_ale_get_vlan_reg_mcast(ale_entry, |
| ale->vlan_field_bits); |
| unreg_mcast_members = |
| cpsw_ale_get_vlan_unreg_mcast(ale_entry, |
| ale->vlan_field_bits); |
| untag_members = cpsw_ale_get_vlan_untag_force(ale_entry, |
| ale->vlan_field_bits); |
| |
| vlan_members |= port_mask; |
| untag_members = (untag_members & ~port_mask) | untag_mask; |
| reg_mcast_members = (reg_mcast_members & ~port_mask) | reg_mask; |
| unreg_mcast_members = (unreg_mcast_members & ~port_mask) | unreg_mask; |
| |
| ret = cpsw_ale_add_vlan(ale, vid, vlan_members, untag_members, |
| reg_mcast_members, unreg_mcast_members); |
| if (ret) { |
| dev_err(ale->params.dev, "Unable to add vlan\n"); |
| return ret; |
| } |
| dev_dbg(ale->params.dev, "port mask 0x%x untag 0x%x\n", vlan_members, |
| untag_mask); |
| |
| return ret; |
| } |
| |
| void cpsw_ale_set_unreg_mcast(struct cpsw_ale *ale, int unreg_mcast_mask, |
| bool add) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS]; |
| int unreg_members = 0; |
| int type, idx; |
| |
| for (idx = 0; idx < ale->params.ale_entries; idx++) { |
| cpsw_ale_read(ale, idx, ale_entry); |
| type = cpsw_ale_get_entry_type(ale_entry); |
| if (type != ALE_TYPE_VLAN) |
| continue; |
| |
| unreg_members = |
| cpsw_ale_get_vlan_unreg_mcast(ale_entry, |
| ale->vlan_field_bits); |
| if (add) |
| unreg_members |= unreg_mcast_mask; |
| else |
| unreg_members &= ~unreg_mcast_mask; |
| cpsw_ale_set_vlan_unreg_mcast(ale_entry, unreg_members, |
| ale->vlan_field_bits); |
| cpsw_ale_write(ale, idx, ale_entry); |
| } |
| } |
| |
| void cpsw_ale_set_allmulti(struct cpsw_ale *ale, int allmulti, int port) |
| { |
| u32 ale_entry[ALE_ENTRY_WORDS]; |
| int unreg_mcast = 0; |
| int type, idx; |
| |
| for (idx = 0; idx < ale->params.ale_entries; idx++) { |
| int vlan_members; |
| |
| cpsw_ale_read(ale, idx, ale_entry); |
| type = cpsw_ale_get_entry_type(ale_entry); |
| if (type != ALE_TYPE_VLAN) |
| continue; |
| vlan_members = |
| cpsw_ale_get_vlan_member_list(ale_entry, |
| ale->vlan_field_bits); |
| |
| if (port != -1 && !(vlan_members & BIT(port))) |
| continue; |
| |
| unreg_mcast = |
| cpsw_ale_get_vlan_unreg_mcast(ale_entry, |
| ale->vlan_field_bits); |
| if (allmulti) |
| unreg_mcast |= ALE_PORT_HOST; |
| else |
| unreg_mcast &= ~ALE_PORT_HOST; |
| cpsw_ale_set_vlan_unreg_mcast(ale_entry, unreg_mcast, |
| ale->vlan_field_bits); |
| cpsw_ale_write(ale, idx, ale_entry); |
| } |
| } |
| |
| struct ale_control_info { |
| const char *name; |
| int offset, port_offset; |
| int shift, port_shift; |
| int bits; |
| }; |
| |
| static struct ale_control_info ale_controls[ALE_NUM_CONTROLS] = { |
| [ALE_ENABLE] = { |
| .name = "enable", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 31, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_CLEAR] = { |
| .name = "clear", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 30, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_AGEOUT] = { |
| .name = "ageout", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 29, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_P0_UNI_FLOOD] = { |
| .name = "port0_unicast_flood", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 8, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_VLAN_NOLEARN] = { |
| .name = "vlan_nolearn", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 7, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_NO_PORT_VLAN] = { |
| .name = "no_port_vlan", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 6, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_OUI_DENY] = { |
| .name = "oui_deny", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 5, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_BYPASS] = { |
| .name = "bypass", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 4, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_RATE_LIMIT_TX] = { |
| .name = "rate_limit_tx", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 3, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_VLAN_AWARE] = { |
| .name = "vlan_aware", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 2, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_AUTH_ENABLE] = { |
| .name = "auth_enable", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 1, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_RATE_LIMIT] = { |
| .name = "rate_limit", |
| .offset = ALE_CONTROL, |
| .port_offset = 0, |
| .shift = 0, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_PORT_STATE] = { |
| .name = "port_state", |
| .offset = ALE_PORTCTL, |
| .port_offset = 4, |
| .shift = 0, |
| .port_shift = 0, |
| .bits = 2, |
| }, |
| [ALE_PORT_DROP_UNTAGGED] = { |
| .name = "drop_untagged", |
| .offset = ALE_PORTCTL, |
| .port_offset = 4, |
| .shift = 2, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_PORT_DROP_UNKNOWN_VLAN] = { |
| .name = "drop_unknown", |
| .offset = ALE_PORTCTL, |
| .port_offset = 4, |
| .shift = 3, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_PORT_NOLEARN] = { |
| .name = "nolearn", |
| .offset = ALE_PORTCTL, |
| .port_offset = 4, |
| .shift = 4, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_PORT_NO_SA_UPDATE] = { |
| .name = "no_source_update", |
| .offset = ALE_PORTCTL, |
| .port_offset = 4, |
| .shift = 5, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_PORT_MACONLY] = { |
| .name = "mac_only_port_mode", |
| .offset = ALE_PORTCTL, |
| .port_offset = 4, |
| .shift = 11, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_PORT_MACONLY_CAF] = { |
| .name = "mac_only_port_caf", |
| .offset = ALE_PORTCTL, |
| .port_offset = 4, |
| .shift = 13, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| [ALE_PORT_MCAST_LIMIT] = { |
| .name = "mcast_limit", |
| .offset = ALE_PORTCTL, |
| .port_offset = 4, |
| .shift = 16, |
| .port_shift = 0, |
| .bits = 8, |
| }, |
| [ALE_PORT_BCAST_LIMIT] = { |
| .name = "bcast_limit", |
| .offset = ALE_PORTCTL, |
| .port_offset = 4, |
| .shift = 24, |
| .port_shift = 0, |
| .bits = 8, |
| }, |
| [ALE_PORT_UNKNOWN_VLAN_MEMBER] = { |
| .name = "unknown_vlan_member", |
| .offset = ALE_UNKNOWNVLAN, |
| .port_offset = 0, |
| .shift = 0, |
| .port_shift = 0, |
| .bits = 6, |
| }, |
| [ALE_PORT_UNKNOWN_MCAST_FLOOD] = { |
| .name = "unknown_mcast_flood", |
| .offset = ALE_UNKNOWNVLAN, |
| .port_offset = 0, |
| .shift = 8, |
| .port_shift = 0, |
| .bits = 6, |
| }, |
| [ALE_PORT_UNKNOWN_REG_MCAST_FLOOD] = { |
| .name = "unknown_reg_flood", |
| .offset = ALE_UNKNOWNVLAN, |
| .port_offset = 0, |
| .shift = 16, |
| .port_shift = 0, |
| .bits = 6, |
| }, |
| [ALE_PORT_UNTAGGED_EGRESS] = { |
| .name = "untagged_egress", |
| .offset = ALE_UNKNOWNVLAN, |
| .port_offset = 0, |
| .shift = 24, |
| .port_shift = 0, |
| .bits = 6, |
| }, |
| [ALE_DEFAULT_THREAD_ID] = { |
| .name = "default_thread_id", |
| .offset = AM65_CPSW_ALE_THREAD_DEF_REG, |
| .port_offset = 0, |
| .shift = 0, |
| .port_shift = 0, |
| .bits = 6, |
| }, |
| [ALE_DEFAULT_THREAD_ENABLE] = { |
| .name = "default_thread_id_enable", |
| .offset = AM65_CPSW_ALE_THREAD_DEF_REG, |
| .port_offset = 0, |
| .shift = 15, |
| .port_shift = 0, |
| .bits = 1, |
| }, |
| }; |
| |
| int cpsw_ale_control_set(struct cpsw_ale *ale, int port, int control, |
| int value) |
| { |
| const struct ale_control_info *info; |
| int offset, shift; |
| u32 tmp, mask; |
| |
| if (control < 0 || control >= ARRAY_SIZE(ale_controls)) |
| return -EINVAL; |
| |
| info = &ale_controls[control]; |
| if (info->port_offset == 0 && info->port_shift == 0) |
| port = 0; /* global, port is a dont care */ |
| |
| if (port < 0 || port >= ale->params.ale_ports) |
| return -EINVAL; |
| |
| mask = BITMASK(info->bits); |
| if (value & ~mask) |
| return -EINVAL; |
| |
| offset = info->offset + (port * info->port_offset); |
| shift = info->shift + (port * info->port_shift); |
| |
| tmp = readl_relaxed(ale->params.ale_regs + offset); |
| tmp = (tmp & ~(mask << shift)) | (value << shift); |
| writel_relaxed(tmp, ale->params.ale_regs + offset); |
| |
| return 0; |
| } |
| |
| int cpsw_ale_control_get(struct cpsw_ale *ale, int port, int control) |
| { |
| const struct ale_control_info *info; |
| int offset, shift; |
| u32 tmp; |
| |
| if (control < 0 || control >= ARRAY_SIZE(ale_controls)) |
| return -EINVAL; |
| |
| info = &ale_controls[control]; |
| if (info->port_offset == 0 && info->port_shift == 0) |
| port = 0; /* global, port is a dont care */ |
| |
| if (port < 0 || port >= ale->params.ale_ports) |
| return -EINVAL; |
| |
| offset = info->offset + (port * info->port_offset); |
| shift = info->shift + (port * info->port_shift); |
| |
| tmp = readl_relaxed(ale->params.ale_regs + offset) >> shift; |
| return tmp & BITMASK(info->bits); |
| } |
| |
| static void cpsw_ale_timer(struct timer_list *t) |
| { |
| struct cpsw_ale *ale = from_timer(ale, t, timer); |
| |
| cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1); |
| |
| if (ale->ageout) { |
| ale->timer.expires = jiffies + ale->ageout; |
| add_timer(&ale->timer); |
| } |
| } |
| |
| void cpsw_ale_start(struct cpsw_ale *ale) |
| { |
| cpsw_ale_control_set(ale, 0, ALE_ENABLE, 1); |
| cpsw_ale_control_set(ale, 0, ALE_CLEAR, 1); |
| |
| timer_setup(&ale->timer, cpsw_ale_timer, 0); |
| if (ale->ageout) { |
| ale->timer.expires = jiffies + ale->ageout; |
| add_timer(&ale->timer); |
| } |
| } |
| |
| void cpsw_ale_stop(struct cpsw_ale *ale) |
| { |
| del_timer_sync(&ale->timer); |
| cpsw_ale_control_set(ale, 0, ALE_CLEAR, 1); |
| cpsw_ale_control_set(ale, 0, ALE_ENABLE, 0); |
| } |
| |
| struct cpsw_ale *cpsw_ale_create(struct cpsw_ale_params *params) |
| { |
| struct cpsw_ale *ale; |
| u32 rev, ale_entries; |
| |
| ale = devm_kzalloc(params->dev, sizeof(*ale), GFP_KERNEL); |
| if (!ale) |
| return ERR_PTR(-ENOMEM); |
| |
| ale->p0_untag_vid_mask = |
| devm_kmalloc_array(params->dev, BITS_TO_LONGS(VLAN_N_VID), |
| sizeof(unsigned long), |
| GFP_KERNEL); |
| if (!ale->p0_untag_vid_mask) |
| return ERR_PTR(-ENOMEM); |
| |
| ale->params = *params; |
| ale->ageout = ale->params.ale_ageout * HZ; |
| |
| rev = readl_relaxed(ale->params.ale_regs + ALE_IDVER); |
| if (!ale->params.major_ver_mask) |
| ale->params.major_ver_mask = 0xff; |
| ale->version = |
| (ALE_VERSION_MAJOR(rev, ale->params.major_ver_mask) << 8) | |
| ALE_VERSION_MINOR(rev); |
| dev_info(ale->params.dev, "initialized cpsw ale version %d.%d\n", |
| ALE_VERSION_MAJOR(rev, ale->params.major_ver_mask), |
| ALE_VERSION_MINOR(rev)); |
| |
| if (!ale->params.ale_entries) { |
| ale_entries = |
| readl_relaxed(ale->params.ale_regs + ALE_STATUS) & |
| ALE_STATUS_SIZE_MASK; |
| /* ALE available on newer NetCP switches has introduced |
| * a register, ALE_STATUS, to indicate the size of ALE |
| * table which shows the size as a multiple of 1024 entries. |
| * For these, params.ale_entries will be set to zero. So |
| * read the register and update the value of ale_entries. |
| * ALE table on NetCP lite, is much smaller and is indicated |
| * by a value of zero in ALE_STATUS. So use a default value |
| * of ALE_TABLE_SIZE_DEFAULT for this. Caller is expected |
| * to set the value of ale_entries for all other versions |
| * of ALE. |
| */ |
| if (!ale_entries) |
| ale_entries = ALE_TABLE_SIZE_DEFAULT; |
| else |
| ale_entries *= ALE_TABLE_SIZE_MULTIPLIER; |
| ale->params.ale_entries = ale_entries; |
| } |
| dev_info(ale->params.dev, |
| "ALE Table size %ld\n", ale->params.ale_entries); |
| |
| /* set default bits for existing h/w */ |
| ale->port_mask_bits = ale->params.ale_ports; |
| ale->port_num_bits = order_base_2(ale->params.ale_ports); |
| ale->vlan_field_bits = ale->params.ale_ports; |
| |
| /* Set defaults override for ALE on NetCP NU switch and for version |
| * 1R3 |
| */ |
| if (ale->params.nu_switch_ale) { |
| /* Separate registers for unknown vlan configuration. |
| * Also there are N bits, where N is number of ale |
| * ports and shift value should be 0 |
| */ |
| ale_controls[ALE_PORT_UNKNOWN_VLAN_MEMBER].bits = |
| ale->params.ale_ports; |
| ale_controls[ALE_PORT_UNKNOWN_VLAN_MEMBER].offset = |
| ALE_UNKNOWNVLAN_MEMBER; |
| ale_controls[ALE_PORT_UNKNOWN_MCAST_FLOOD].bits = |
| ale->params.ale_ports; |
| ale_controls[ALE_PORT_UNKNOWN_MCAST_FLOOD].shift = 0; |
| ale_controls[ALE_PORT_UNKNOWN_MCAST_FLOOD].offset = |
| ALE_UNKNOWNVLAN_UNREG_MCAST_FLOOD; |
| ale_controls[ALE_PORT_UNKNOWN_REG_MCAST_FLOOD].bits = |
| ale->params.ale_ports; |
| ale_controls[ALE_PORT_UNKNOWN_REG_MCAST_FLOOD].shift = 0; |
| ale_controls[ALE_PORT_UNKNOWN_REG_MCAST_FLOOD].offset = |
| ALE_UNKNOWNVLAN_REG_MCAST_FLOOD; |
| ale_controls[ALE_PORT_UNTAGGED_EGRESS].bits = |
| ale->params.ale_ports; |
| ale_controls[ALE_PORT_UNTAGGED_EGRESS].shift = 0; |
| ale_controls[ALE_PORT_UNTAGGED_EGRESS].offset = |
| ALE_UNKNOWNVLAN_FORCE_UNTAG_EGRESS; |
| } |
| |
| cpsw_ale_control_set(ale, 0, ALE_CLEAR, 1); |
| return ale; |
| } |
| |
| void cpsw_ale_dump(struct cpsw_ale *ale, u32 *data) |
| { |
| int i; |
| |
| for (i = 0; i < ale->params.ale_entries; i++) { |
| cpsw_ale_read(ale, i, data); |
| data += ALE_ENTRY_WORDS; |
| } |
| } |