| // 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-smi.h" |
| |
| int rtl8366_mc_is_used(struct realtek_smi *smi, int mc_index, int *used) |
| { |
| int ret; |
| int i; |
| |
| *used = 0; |
| for (i = 0; i < smi->num_ports; i++) { |
| int index = 0; |
| |
| ret = smi->ops->get_mc_index(smi, 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 |
| * @smi: 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_smi *smi, 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 < smi->num_vlan_mc; i++) { |
| ret = smi->ops->get_vlan_mc(smi, i, vlanmc); |
| if (ret) { |
| dev_err(smi->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 < smi->num_vlan_mc; i++) { |
| ret = smi->ops->get_vlan_mc(smi, i, vlanmc); |
| if (ret) { |
| dev_err(smi->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 = smi->ops->get_vlan_4k(smi, vid, &vlan4k); |
| if (ret) { |
| dev_err(smi->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 = smi->ops->set_vlan_mc(smi, i, vlanmc); |
| if (ret) { |
| dev_err(smi->dev, "unable to set/update VLAN MC %d for VID %d\n", |
| i, vid); |
| return ret; |
| } |
| |
| dev_dbg(smi->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 < smi->num_vlan_mc; i++) { |
| int used; |
| |
| ret = rtl8366_mc_is_used(smi, i, &used); |
| if (ret) |
| return ret; |
| |
| if (!used) { |
| /* Update the entry from the 4K table */ |
| ret = smi->ops->get_vlan_4k(smi, vid, &vlan4k); |
| if (ret) |
| return ret; |
| |
| vlanmc->vid = vid; |
| vlanmc->member = vlan4k.member; |
| vlanmc->untag = vlan4k.untag; |
| vlanmc->fid = vlan4k.fid; |
| ret = smi->ops->set_vlan_mc(smi, i, vlanmc); |
| if (ret) { |
| dev_err(smi->dev, "unable to set/update VLAN MC %d for VID %d\n", |
| i, vid); |
| return ret; |
| } |
| dev_dbg(smi->dev, "recycled MC at index %i for VID %d\n", |
| i, vid); |
| return i; |
| } |
| } |
| |
| dev_err(smi->dev, "all VLAN member configurations are in use\n"); |
| return -ENOSPC; |
| } |
| |
| int rtl8366_set_vlan(struct realtek_smi *smi, int vid, u32 member, |
| u32 untag, u32 fid) |
| { |
| struct rtl8366_vlan_mc vlanmc; |
| struct rtl8366_vlan_4k vlan4k; |
| int mc; |
| int ret; |
| |
| if (!smi->ops->is_vlan_valid(smi, vid)) |
| return -EINVAL; |
| |
| dev_dbg(smi->dev, |
| "setting VLAN%d 4k members: 0x%02x, untagged: 0x%02x\n", |
| vid, member, untag); |
| |
| /* Update the 4K table */ |
| ret = smi->ops->get_vlan_4k(smi, vid, &vlan4k); |
| if (ret) |
| return ret; |
| |
| vlan4k.member |= member; |
| vlan4k.untag |= untag; |
| vlan4k.fid = fid; |
| ret = smi->ops->set_vlan_4k(smi, &vlan4k); |
| if (ret) |
| return ret; |
| |
| dev_dbg(smi->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(smi, 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 = smi->ops->set_vlan_mc(smi, mc, &vlanmc); |
| if (ret) |
| dev_err(smi->dev, "failed to commit changes to VLAN MC index %d for VID %d\n", |
| mc, vid); |
| else |
| dev_dbg(smi->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_smi *smi, unsigned int port, |
| unsigned int vid) |
| { |
| struct rtl8366_vlan_mc vlanmc; |
| int mc; |
| int ret; |
| |
| if (!smi->ops->is_vlan_valid(smi, vid)) |
| return -EINVAL; |
| |
| /* Find or allocate a member config for this VID */ |
| ret = rtl8366_obtain_mc(smi, vid, &vlanmc); |
| if (ret < 0) |
| return ret; |
| mc = ret; |
| |
| ret = smi->ops->set_mc_index(smi, port, mc); |
| if (ret) { |
| dev_err(smi->dev, "set PVID: failed to set MC index %d for port %d\n", |
| mc, port); |
| return ret; |
| } |
| |
| dev_dbg(smi->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_smi *smi, 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 = smi->ops->enable_vlan(smi, true); |
| if (ret) |
| return ret; |
| |
| smi->vlan_enabled = true; |
| } |
| |
| ret = smi->ops->enable_vlan4k(smi, enable); |
| if (ret) |
| return ret; |
| |
| smi->vlan4k_enabled = enable; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(rtl8366_enable_vlan4k); |
| |
| int rtl8366_enable_vlan(struct realtek_smi *smi, bool enable) |
| { |
| int ret; |
| |
| ret = smi->ops->enable_vlan(smi, enable); |
| if (ret) |
| return ret; |
| |
| smi->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) { |
| smi->vlan4k_enabled = false; |
| ret = smi->ops->enable_vlan4k(smi, false); |
| } |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(rtl8366_enable_vlan); |
| |
| int rtl8366_reset_vlan(struct realtek_smi *smi) |
| { |
| struct rtl8366_vlan_mc vlanmc; |
| int ret; |
| int i; |
| |
| rtl8366_enable_vlan(smi, false); |
| rtl8366_enable_vlan4k(smi, 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 < smi->num_vlan_mc; i++) { |
| ret = smi->ops->set_vlan_mc(smi, i, &vlanmc); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(rtl8366_reset_vlan); |
| |
| int rtl8366_init_vlan(struct realtek_smi *smi) |
| { |
| int port; |
| int ret; |
| |
| ret = rtl8366_reset_vlan(smi); |
| if (ret) |
| return ret; |
| |
| /* Loop over the available ports, for each port, associate |
| * it with the VLAN (port+1) |
| */ |
| for (port = 0; port < smi->num_ports; port++) { |
| u32 mask; |
| |
| if (port == smi->cpu_port) |
| /* For the CPU port, make all ports members of this |
| * VLAN. |
| */ |
| mask = GENMASK(smi->num_ports - 1, 0); |
| else |
| /* For all other ports, enable itself plus the |
| * CPU port. |
| */ |
| mask = BIT(port) | BIT(smi->cpu_port); |
| |
| /* For each port, set the port as member of VLAN (port+1) |
| * and untagged, except for the CPU port: the CPU port (5) is |
| * member of VLAN 6 and so are ALL the other ports as well. |
| * Use filter 0 (no filter). |
| */ |
| dev_info(smi->dev, "VLAN%d port mask for port %d, %08x\n", |
| (port + 1), port, mask); |
| ret = rtl8366_set_vlan(smi, (port + 1), mask, mask, 0); |
| if (ret) |
| return ret; |
| |
| dev_info(smi->dev, "VLAN%d port %d, PVID set to %d\n", |
| (port + 1), port, (port + 1)); |
| ret = rtl8366_set_pvid(smi, port, (port + 1)); |
| if (ret) |
| return ret; |
| } |
| |
| return rtl8366_enable_vlan(smi, true); |
| } |
| EXPORT_SYMBOL_GPL(rtl8366_init_vlan); |
| |
| int rtl8366_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering) |
| { |
| struct realtek_smi *smi = ds->priv; |
| struct rtl8366_vlan_4k vlan4k; |
| int ret; |
| |
| /* Use VLAN nr port + 1 since VLAN0 is not valid */ |
| if (!smi->ops->is_vlan_valid(smi, port + 1)) |
| return -EINVAL; |
| |
| dev_info(smi->dev, "%s filtering on port %d\n", |
| vlan_filtering ? "enable" : "disable", |
| port); |
| |
| /* TODO: |
| * The hardware support filter ID (FID) 0..7, I have no clue how to |
| * support this in the driver when the callback only says on/off. |
| */ |
| ret = smi->ops->get_vlan_4k(smi, port + 1, &vlan4k); |
| if (ret) |
| return ret; |
| |
| /* Just set the filter to FID 1 for now then */ |
| ret = rtl8366_set_vlan(smi, port + 1, |
| vlan4k.member, |
| vlan4k.untag, |
| 1); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(rtl8366_vlan_filtering); |
| |
| int rtl8366_vlan_prepare(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_vlan *vlan) |
| { |
| struct realtek_smi *smi = ds->priv; |
| u16 vid; |
| int ret; |
| |
| for (vid = vlan->vid_begin; vid < vlan->vid_end; vid++) |
| if (!smi->ops->is_vlan_valid(smi, vid)) |
| return -EINVAL; |
| |
| dev_info(smi->dev, "prepare VLANs %04x..%04x\n", |
| vlan->vid_begin, vlan->vid_end); |
| |
| /* Enable VLAN in the hardware |
| * FIXME: what's with this 4k business? |
| * Just rtl8366_enable_vlan() seems inconclusive. |
| */ |
| ret = rtl8366_enable_vlan4k(smi, true); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(rtl8366_vlan_prepare); |
| |
| void rtl8366_vlan_add(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_vlan *vlan) |
| { |
| bool untagged = !!(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED); |
| bool pvid = !!(vlan->flags & BRIDGE_VLAN_INFO_PVID); |
| struct realtek_smi *smi = ds->priv; |
| u32 member = 0; |
| u32 untag = 0; |
| u16 vid; |
| int ret; |
| |
| for (vid = vlan->vid_begin; vid < vlan->vid_end; vid++) |
| if (!smi->ops->is_vlan_valid(smi, vid)) |
| return; |
| |
| dev_info(smi->dev, "add VLAN %d on port %d, %s, %s\n", |
| vlan->vid_begin, |
| port, |
| untagged ? "untagged" : "tagged", |
| pvid ? " PVID" : "no PVID"); |
| |
| if (dsa_is_dsa_port(ds, port) || dsa_is_cpu_port(ds, port)) |
| dev_err(smi->dev, "port is DSA or CPU port\n"); |
| |
| for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { |
| member |= BIT(port); |
| |
| if (untagged) |
| untag |= BIT(port); |
| |
| ret = rtl8366_set_vlan(smi, vid, member, untag, 0); |
| if (ret) |
| dev_err(smi->dev, |
| "failed to set up VLAN %04x", |
| vid); |
| |
| if (!pvid) |
| continue; |
| |
| ret = rtl8366_set_pvid(smi, port, vid); |
| if (ret) |
| dev_err(smi->dev, |
| "failed to set PVID on port %d to VLAN %04x", |
| port, vid); |
| |
| if (!ret) |
| dev_dbg(smi->dev, "VLAN add: added VLAN %d with PVID on port %d\n", |
| vid, port); |
| } |
| } |
| 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_smi *smi = ds->priv; |
| u16 vid; |
| int ret; |
| |
| dev_info(smi->dev, "del VLAN on port %d\n", port); |
| |
| for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) { |
| int i; |
| |
| dev_info(smi->dev, "del VLAN %04x\n", vid); |
| |
| for (i = 0; i < smi->num_vlan_mc; i++) { |
| struct rtl8366_vlan_mc vlanmc; |
| |
| ret = smi->ops->get_vlan_mc(smi, i, &vlanmc); |
| if (ret) |
| return ret; |
| |
| if (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.untag) { |
| vlanmc.vid = 0; |
| vlanmc.priority = 0; |
| vlanmc.fid = 0; |
| } |
| ret = smi->ops->set_vlan_mc(smi, i, &vlanmc); |
| if (ret) { |
| dev_err(smi->dev, |
| "failed to remove VLAN %04x\n", |
| 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_smi *smi = ds->priv; |
| struct rtl8366_mib_counter *mib; |
| int i; |
| |
| if (port >= smi->num_ports) |
| return; |
| |
| for (i = 0; i < smi->num_mib_counters; i++) { |
| mib = &smi->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_smi *smi = ds->priv; |
| |
| /* We only support SS_STATS */ |
| if (sset != ETH_SS_STATS) |
| return 0; |
| if (port >= smi->num_ports) |
| return -EINVAL; |
| |
| return smi->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_smi *smi = ds->priv; |
| int i; |
| int ret; |
| |
| if (port >= smi->num_ports) |
| return; |
| |
| for (i = 0; i < smi->num_mib_counters; i++) { |
| struct rtl8366_mib_counter *mib; |
| u64 mibvalue = 0; |
| |
| mib = &smi->mib_counters[i]; |
| ret = smi->ops->get_mib_counter(smi, port, mib, &mibvalue); |
| if (ret) { |
| dev_err(smi->dev, "error reading MIB counter %s\n", |
| mib->name); |
| } |
| data[i] = mibvalue; |
| } |
| } |
| EXPORT_SYMBOL_GPL(rtl8366_get_ethtool_stats); |