blob: dc5f75be3017f18801704ba94ba00e79e87448ef [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/* Realtek SMI library helpers for the RTL8366x variants
* RTL8366RB and RTL8366S
*
* Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
* Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com>
* Copyright (C) 2010 Roman Yeryomin <roman@advem.lv>
* Copyright (C) 2011 Colin Leitner <colin.leitner@googlemail.com>
*/
#include <linux/if_bridge.h>
#include <net/dsa.h>
#include "realtek.h"
int rtl8366_mc_is_used(struct realtek_priv *priv, int mc_index, int *used)
{
int ret;
int i;
*used = 0;
for (i = 0; i < priv->num_ports; i++) {
int index = 0;
ret = priv->ops->get_mc_index(priv, i, &index);
if (ret)
return ret;
if (mc_index == index) {
*used = 1;
break;
}
}
return 0;
}
EXPORT_SYMBOL_GPL(rtl8366_mc_is_used);
/**
* rtl8366_obtain_mc() - retrieve or allocate a VLAN member configuration
* @priv: the Realtek SMI device instance
* @vid: the VLAN ID to look up or allocate
* @vlanmc: the pointer will be assigned to a pointer to a valid member config
* if successful
* @return: index of a new member config or negative error number
*/
static int rtl8366_obtain_mc(struct realtek_priv *priv, int vid,
struct rtl8366_vlan_mc *vlanmc)
{
struct rtl8366_vlan_4k vlan4k;
int ret;
int i;
/* Try to find an existing member config entry for this VID */
for (i = 0; i < priv->num_vlan_mc; i++) {
ret = priv->ops->get_vlan_mc(priv, i, vlanmc);
if (ret) {
dev_err(priv->dev, "error searching for VLAN MC %d for VID %d\n",
i, vid);
return ret;
}
if (vid == vlanmc->vid)
return i;
}
/* We have no MC entry for this VID, try to find an empty one */
for (i = 0; i < priv->num_vlan_mc; i++) {
ret = priv->ops->get_vlan_mc(priv, i, vlanmc);
if (ret) {
dev_err(priv->dev, "error searching for VLAN MC %d for VID %d\n",
i, vid);
return ret;
}
if (vlanmc->vid == 0 && vlanmc->member == 0) {
/* Update the entry from the 4K table */
ret = priv->ops->get_vlan_4k(priv, vid, &vlan4k);
if (ret) {
dev_err(priv->dev, "error looking for 4K VLAN MC %d for VID %d\n",
i, vid);
return ret;
}
vlanmc->vid = vid;
vlanmc->member = vlan4k.member;
vlanmc->untag = vlan4k.untag;
vlanmc->fid = vlan4k.fid;
ret = priv->ops->set_vlan_mc(priv, i, vlanmc);
if (ret) {
dev_err(priv->dev, "unable to set/update VLAN MC %d for VID %d\n",
i, vid);
return ret;
}
dev_dbg(priv->dev, "created new MC at index %d for VID %d\n",
i, vid);
return i;
}
}
/* MC table is full, try to find an unused entry and replace it */
for (i = 0; i < priv->num_vlan_mc; i++) {
int used;
ret = rtl8366_mc_is_used(priv, i, &used);
if (ret)
return ret;
if (!used) {
/* Update the entry from the 4K table */
ret = priv->ops->get_vlan_4k(priv, vid, &vlan4k);
if (ret)
return ret;
vlanmc->vid = vid;
vlanmc->member = vlan4k.member;
vlanmc->untag = vlan4k.untag;
vlanmc->fid = vlan4k.fid;
ret = priv->ops->set_vlan_mc(priv, i, vlanmc);
if (ret) {
dev_err(priv->dev, "unable to set/update VLAN MC %d for VID %d\n",
i, vid);
return ret;
}
dev_dbg(priv->dev, "recycled MC at index %i for VID %d\n",
i, vid);
return i;
}
}
dev_err(priv->dev, "all VLAN member configurations are in use\n");
return -ENOSPC;
}
int rtl8366_set_vlan(struct realtek_priv *priv, int vid, u32 member,
u32 untag, u32 fid)
{
struct rtl8366_vlan_mc vlanmc;
struct rtl8366_vlan_4k vlan4k;
int mc;
int ret;
if (!priv->ops->is_vlan_valid(priv, vid))
return -EINVAL;
dev_dbg(priv->dev,
"setting VLAN%d 4k members: 0x%02x, untagged: 0x%02x\n",
vid, member, untag);
/* Update the 4K table */
ret = priv->ops->get_vlan_4k(priv, vid, &vlan4k);
if (ret)
return ret;
vlan4k.member |= member;
vlan4k.untag |= untag;
vlan4k.fid = fid;
ret = priv->ops->set_vlan_4k(priv, &vlan4k);
if (ret)
return ret;
dev_dbg(priv->dev,
"resulting VLAN%d 4k members: 0x%02x, untagged: 0x%02x\n",
vid, vlan4k.member, vlan4k.untag);
/* Find or allocate a member config for this VID */
ret = rtl8366_obtain_mc(priv, vid, &vlanmc);
if (ret < 0)
return ret;
mc = ret;
/* Update the MC entry */
vlanmc.member |= member;
vlanmc.untag |= untag;
vlanmc.fid = fid;
/* Commit updates to the MC entry */
ret = priv->ops->set_vlan_mc(priv, mc, &vlanmc);
if (ret)
dev_err(priv->dev, "failed to commit changes to VLAN MC index %d for VID %d\n",
mc, vid);
else
dev_dbg(priv->dev,
"resulting VLAN%d MC members: 0x%02x, untagged: 0x%02x\n",
vid, vlanmc.member, vlanmc.untag);
return ret;
}
EXPORT_SYMBOL_GPL(rtl8366_set_vlan);
int rtl8366_set_pvid(struct realtek_priv *priv, unsigned int port,
unsigned int vid)
{
struct rtl8366_vlan_mc vlanmc;
int mc;
int ret;
if (!priv->ops->is_vlan_valid(priv, vid))
return -EINVAL;
/* Find or allocate a member config for this VID */
ret = rtl8366_obtain_mc(priv, vid, &vlanmc);
if (ret < 0)
return ret;
mc = ret;
ret = priv->ops->set_mc_index(priv, port, mc);
if (ret) {
dev_err(priv->dev, "set PVID: failed to set MC index %d for port %d\n",
mc, port);
return ret;
}
dev_dbg(priv->dev, "set PVID: the PVID for port %d set to %d using existing MC index %d\n",
port, vid, mc);
return 0;
}
EXPORT_SYMBOL_GPL(rtl8366_set_pvid);
int rtl8366_enable_vlan4k(struct realtek_priv *priv, bool enable)
{
int ret;
/* To enable 4k VLAN, ordinary VLAN must be enabled first,
* but if we disable 4k VLAN it is fine to leave ordinary
* VLAN enabled.
*/
if (enable) {
/* Make sure VLAN is ON */
ret = priv->ops->enable_vlan(priv, true);
if (ret)
return ret;
priv->vlan_enabled = true;
}
ret = priv->ops->enable_vlan4k(priv, enable);
if (ret)
return ret;
priv->vlan4k_enabled = enable;
return 0;
}
EXPORT_SYMBOL_GPL(rtl8366_enable_vlan4k);
int rtl8366_enable_vlan(struct realtek_priv *priv, bool enable)
{
int ret;
ret = priv->ops->enable_vlan(priv, enable);
if (ret)
return ret;
priv->vlan_enabled = enable;
/* If we turn VLAN off, make sure that we turn off
* 4k VLAN as well, if that happened to be on.
*/
if (!enable) {
priv->vlan4k_enabled = false;
ret = priv->ops->enable_vlan4k(priv, false);
}
return ret;
}
EXPORT_SYMBOL_GPL(rtl8366_enable_vlan);
int rtl8366_reset_vlan(struct realtek_priv *priv)
{
struct rtl8366_vlan_mc vlanmc;
int ret;
int i;
rtl8366_enable_vlan(priv, false);
rtl8366_enable_vlan4k(priv, false);
/* Clear the 16 VLAN member configurations */
vlanmc.vid = 0;
vlanmc.priority = 0;
vlanmc.member = 0;
vlanmc.untag = 0;
vlanmc.fid = 0;
for (i = 0; i < priv->num_vlan_mc; i++) {
ret = priv->ops->set_vlan_mc(priv, i, &vlanmc);
if (ret)
return ret;
}
return 0;
}
EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
int rtl8366_vlan_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct netlink_ext_ack *extack)
{
bool untagged = !!(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED);
bool pvid = !!(vlan->flags & BRIDGE_VLAN_INFO_PVID);
struct realtek_priv *priv = ds->priv;
u32 member = 0;
u32 untag = 0;
int ret;
if (!priv->ops->is_vlan_valid(priv, vlan->vid)) {
NL_SET_ERR_MSG_MOD(extack, "VLAN ID not valid");
return -EINVAL;
}
/* Enable VLAN in the hardware
* FIXME: what's with this 4k business?
* Just rtl8366_enable_vlan() seems inconclusive.
*/
ret = rtl8366_enable_vlan4k(priv, true);
if (ret) {
NL_SET_ERR_MSG_MOD(extack, "Failed to enable VLAN 4K");
return ret;
}
dev_dbg(priv->dev, "add VLAN %d on port %d, %s, %s\n",
vlan->vid, port, untagged ? "untagged" : "tagged",
pvid ? "PVID" : "no PVID");
member |= BIT(port);
if (untagged)
untag |= BIT(port);
ret = rtl8366_set_vlan(priv, vlan->vid, member, untag, 0);
if (ret) {
dev_err(priv->dev, "failed to set up VLAN %04x", vlan->vid);
return ret;
}
if (!pvid)
return 0;
ret = rtl8366_set_pvid(priv, port, vlan->vid);
if (ret) {
dev_err(priv->dev, "failed to set PVID on port %d to VLAN %04x",
port, vlan->vid);
return ret;
}
return 0;
}
EXPORT_SYMBOL_GPL(rtl8366_vlan_add);
int rtl8366_vlan_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan)
{
struct realtek_priv *priv = ds->priv;
int ret, i;
dev_dbg(priv->dev, "del VLAN %d on port %d\n", vlan->vid, port);
for (i = 0; i < priv->num_vlan_mc; i++) {
struct rtl8366_vlan_mc vlanmc;
ret = priv->ops->get_vlan_mc(priv, i, &vlanmc);
if (ret)
return ret;
if (vlan->vid == vlanmc.vid) {
/* Remove this port from the VLAN */
vlanmc.member &= ~BIT(port);
vlanmc.untag &= ~BIT(port);
/*
* If no ports are members of this VLAN
* anymore then clear the whole member
* config so it can be reused.
*/
if (!vlanmc.member) {
vlanmc.vid = 0;
vlanmc.priority = 0;
vlanmc.fid = 0;
}
ret = priv->ops->set_vlan_mc(priv, i, &vlanmc);
if (ret) {
dev_err(priv->dev,
"failed to remove VLAN %04x\n",
vlan->vid);
return ret;
}
break;
}
}
return 0;
}
EXPORT_SYMBOL_GPL(rtl8366_vlan_del);
void rtl8366_get_strings(struct dsa_switch *ds, int port, u32 stringset,
uint8_t *data)
{
struct realtek_priv *priv = ds->priv;
struct rtl8366_mib_counter *mib;
int i;
if (port >= priv->num_ports)
return;
for (i = 0; i < priv->num_mib_counters; i++) {
mib = &priv->mib_counters[i];
strncpy(data + i * ETH_GSTRING_LEN,
mib->name, ETH_GSTRING_LEN);
}
}
EXPORT_SYMBOL_GPL(rtl8366_get_strings);
int rtl8366_get_sset_count(struct dsa_switch *ds, int port, int sset)
{
struct realtek_priv *priv = ds->priv;
/* We only support SS_STATS */
if (sset != ETH_SS_STATS)
return 0;
if (port >= priv->num_ports)
return -EINVAL;
return priv->num_mib_counters;
}
EXPORT_SYMBOL_GPL(rtl8366_get_sset_count);
void rtl8366_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data)
{
struct realtek_priv *priv = ds->priv;
int i;
int ret;
if (port >= priv->num_ports)
return;
for (i = 0; i < priv->num_mib_counters; i++) {
struct rtl8366_mib_counter *mib;
u64 mibvalue = 0;
mib = &priv->mib_counters[i];
ret = priv->ops->get_mib_counter(priv, port, mib, &mibvalue);
if (ret) {
dev_err(priv->dev, "error reading MIB counter %s\n",
mib->name);
}
data[i] = mibvalue;
}
}
EXPORT_SYMBOL_GPL(rtl8366_get_ethtool_stats);