diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/net/ethernet/ti/cpsw_ale.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/net/ethernet/ti/cpsw_ale.c | 641 |
1 files changed, 0 insertions, 641 deletions
diff --git a/ANDROID_3.4.5/drivers/net/ethernet/ti/cpsw_ale.c b/ANDROID_3.4.5/drivers/net/ethernet/ti/cpsw_ale.c deleted file mode 100644 index ca0d48a7..00000000 --- a/ANDROID_3.4.5/drivers/net/ethernet/ti/cpsw_ale.c +++ /dev/null @@ -1,641 +0,0 @@ -/* - * Texas Instruments 3-Port Ethernet Switch Address Lookup Engine - * - * Copyright (C) 2012 Texas Instruments - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ -#include <linux/kernel.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 "cpsw_ale.h" - -#define BITMASK(bits) (BIT(bits) - 1) -#define ALE_ENTRY_BITS 68 -#define ALE_ENTRY_WORDS DIV_ROUND_UP(ALE_ENTRY_BITS, 32) - -#define ALE_VERSION_MAJOR(rev) ((rev >> 8) & 0xff) -#define ALE_VERSION_MINOR(rev) (rev & 0xff) - -/* ALE Registers */ -#define ALE_IDVER 0x00 -#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 - -#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 - -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_ALE_FIELD(entry_type, 60, 2) -DEFINE_ALE_FIELD(vlan_id, 48, 12) -DEFINE_ALE_FIELD(mcast_state, 62, 2) -DEFINE_ALE_FIELD(port_mask, 66, 3) -DEFINE_ALE_FIELD(super, 65, 1) -DEFINE_ALE_FIELD(ucast_type, 62, 2) -DEFINE_ALE_FIELD(port_num, 66, 2) -DEFINE_ALE_FIELD(blocked, 65, 1) -DEFINE_ALE_FIELD(secure, 64, 1) -DEFINE_ALE_FIELD(vlan_untag_force, 24, 3) -DEFINE_ALE_FIELD(vlan_reg_mcast, 16, 3) -DEFINE_ALE_FIELD(vlan_unreg_mcast, 8, 3) -DEFINE_ALE_FIELD(vlan_member_list, 0, 3) -DEFINE_ALE_FIELD(mcast, 40, 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, 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); - - __raw_writel(idx, ale->params.ale_regs + ALE_TABLE_CONTROL); - - for (i = 0; i < ALE_ENTRY_WORDS; i++) - ale_entry[i] = __raw_readl(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++) - __raw_writel(ale_entry[i], ale->params.ale_regs + - ALE_TABLE + 4 * i); - - __raw_writel(idx | ALE_TABLE_WRITE, ale->params.ale_regs + - ALE_TABLE_CONTROL); - - return idx; -} - -static int cpsw_ale_match_addr(struct cpsw_ale *ale, u8 *addr) -{ - 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; - cpsw_ale_get_addr(ale_entry, entry_addr); - if (memcmp(entry_addr, addr, 6) == 0) - 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); - if ((mask & port_mask) == 0) - return; /* ports dont intersect, not interested */ - mask &= ~port_mask; - - /* free if only remaining port is host port */ - if (mask == BIT(ale->params.ale_ports)) - cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE); - else - cpsw_ale_set_port_mask(ale_entry, mask); -} - -static void cpsw_ale_flush_ucast(struct cpsw_ale *ale, u32 *ale_entry, - int port_mask) -{ - int port; - - port = cpsw_ale_get_port_num(ale_entry); - if ((BIT(port) & port_mask) == 0) - return; /* ports dont intersect, not interested */ - cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE); -} - -int cpsw_ale_flush(struct cpsw_ale *ale, int port_mask) -{ - 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 (cpsw_ale_get_mcast(ale_entry)) - cpsw_ale_flush_mcast(ale, ale_entry, port_mask); - else - cpsw_ale_flush_ucast(ale, ale_entry, port_mask); - - cpsw_ale_write(ale, idx, ale_entry); - } - return 0; -} - -int cpsw_ale_add_ucast(struct cpsw_ale *ale, u8 *addr, int port, int flags) -{ - u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; - int idx; - - cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_ADDR); - 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); - - idx = cpsw_ale_match_addr(ale, addr); - 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, u8 *addr, int port) -{ - u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; - int idx; - - idx = cpsw_ale_match_addr(ale, addr); - 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, u8 *addr, int port_mask, - int super, int mcast_state) -{ - u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; - int idx, mask; - - idx = cpsw_ale_match_addr(ale, addr); - if (idx >= 0) - cpsw_ale_read(ale, idx, ale_entry); - - cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_ADDR); - cpsw_ale_set_addr(ale_entry, addr); - cpsw_ale_set_super(ale_entry, super); - cpsw_ale_set_mcast_state(ale_entry, mcast_state); - - mask = cpsw_ale_get_port_mask(ale_entry); - port_mask |= mask; - cpsw_ale_set_port_mask(ale_entry, port_mask); - - 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, u8 *addr, int port_mask) -{ - u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0}; - int idx; - - idx = cpsw_ale_match_addr(ale, addr); - if (idx < 0) - return -EINVAL; - - cpsw_ale_read(ale, idx, ale_entry); - - if (port_mask) - cpsw_ale_set_port_mask(ale_entry, port_mask); - else - cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE); - - cpsw_ale_write(ale, idx, ale_entry); - return 0; -} - -struct ale_control_info { - const char *name; - int offset, port_offset; - int shift, port_shift; - int bits; -}; - -static const 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_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_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, - }, -}; - -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 = __raw_readl(ale->params.ale_regs + offset); - tmp = (tmp & ~(mask << shift)) | (value << shift); - __raw_writel(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 = __raw_readl(ale->params.ale_regs + offset) >> shift; - return tmp & BITMASK(info->bits); -} - -static void cpsw_ale_timer(unsigned long arg) -{ - struct cpsw_ale *ale = (struct cpsw_ale *)arg; - - cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1); - - if (ale->ageout) { - ale->timer.expires = jiffies + ale->ageout; - add_timer(&ale->timer); - } -} - -int cpsw_ale_set_ageout(struct cpsw_ale *ale, int ageout) -{ - del_timer_sync(&ale->timer); - ale->ageout = ageout * HZ; - if (ale->ageout) { - ale->timer.expires = jiffies + ale->ageout; - add_timer(&ale->timer); - } - return 0; -} - -void cpsw_ale_start(struct cpsw_ale *ale) -{ - u32 rev; - - rev = __raw_readl(ale->params.ale_regs + ALE_IDVER); - dev_dbg(ale->params.dev, "initialized cpsw ale revision %d.%d\n", - ALE_VERSION_MAJOR(rev), ALE_VERSION_MINOR(rev)); - cpsw_ale_control_set(ale, 0, ALE_ENABLE, 1); - cpsw_ale_control_set(ale, 0, ALE_CLEAR, 1); - - init_timer(&ale->timer); - ale->timer.data = (unsigned long)ale; - ale->timer.function = cpsw_ale_timer; - 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); -} - -struct cpsw_ale *cpsw_ale_create(struct cpsw_ale_params *params) -{ - struct cpsw_ale *ale; - - ale = kzalloc(sizeof(*ale), GFP_KERNEL); - if (!ale) - return NULL; - - ale->params = *params; - ale->ageout = ale->params.ale_ageout * HZ; - - return ale; -} - -int cpsw_ale_destroy(struct cpsw_ale *ale) -{ - if (!ale) - return -EINVAL; - cpsw_ale_stop(ale); - cpsw_ale_control_set(ale, 0, ALE_ENABLE, 0); - kfree(ale); - return 0; -} |