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linux-zen-server/drivers/net/dsa/ocelot/felix.c

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Initial commit
2023-08-30 17:53:23 +02:00
// SPDX-License-Identifier: GPL-2.0
/* Copyright 2019-2021 NXP
*
* This is an umbrella module for all network switches that are
* register-compatible with Ocelot and that perform I/O to their host CPU
* through an NPI (Node Processor Interface) Ethernet port.
*/
#include <uapi/linux/if_bridge.h>
#include <soc/mscc/ocelot_vcap.h>
#include <soc/mscc/ocelot_qsys.h>
#include <soc/mscc/ocelot_sys.h>
#include <soc/mscc/ocelot_dev.h>
#include <soc/mscc/ocelot_ana.h>
#include <soc/mscc/ocelot_ptp.h>
#include <soc/mscc/ocelot.h>
#include <linux/dsa/8021q.h>
#include <linux/dsa/ocelot.h>
#include <linux/platform_device.h>
#include <linux/ptp_classify.h>
#include <linux/module.h>
#include <linux/of_net.h>
#include <linux/pci.h>
#include <linux/of.h>
#include <net/pkt_sched.h>
#include <net/dsa.h>
#include "felix.h"
/* Translate the DSA database API into the ocelot switch library API,
* which uses VID 0 for all ports that aren't part of a bridge,
* and expects the bridge_dev to be NULL in that case.
*/
static struct net_device *felix_classify_db(struct dsa_db db)
{
switch (db.type) {
case DSA_DB_PORT:
case DSA_DB_LAG:
return NULL;
case DSA_DB_BRIDGE:
return db.bridge.dev;
default:
return ERR_PTR(-EOPNOTSUPP);
}
}
static int felix_cpu_port_for_master(struct dsa_switch *ds,
struct net_device *master)
{
struct ocelot *ocelot = ds->priv;
struct dsa_port *cpu_dp;
int lag;
if (netif_is_lag_master(master)) {
mutex_lock(&ocelot->fwd_domain_lock);
lag = ocelot_bond_get_id(ocelot, master);
mutex_unlock(&ocelot->fwd_domain_lock);
return lag;
}
cpu_dp = master->dsa_ptr;
return cpu_dp->index;
}
/* Set up VCAP ES0 rules for pushing a tag_8021q VLAN towards the CPU such that
* the tagger can perform RX source port identification.
*/
static int felix_tag_8021q_vlan_add_rx(struct dsa_switch *ds, int port,
int upstream, u16 vid)
{
struct ocelot_vcap_filter *outer_tagging_rule;
struct ocelot *ocelot = ds->priv;
unsigned long cookie;
int key_length, err;
key_length = ocelot->vcap[VCAP_ES0].keys[VCAP_ES0_IGR_PORT].length;
outer_tagging_rule = kzalloc(sizeof(struct ocelot_vcap_filter),
GFP_KERNEL);
if (!outer_tagging_rule)
return -ENOMEM;
cookie = OCELOT_VCAP_ES0_TAG_8021Q_RXVLAN(ocelot, port, upstream);
outer_tagging_rule->key_type = OCELOT_VCAP_KEY_ANY;
outer_tagging_rule->prio = 1;
outer_tagging_rule->id.cookie = cookie;
outer_tagging_rule->id.tc_offload = false;
outer_tagging_rule->block_id = VCAP_ES0;
outer_tagging_rule->type = OCELOT_VCAP_FILTER_OFFLOAD;
outer_tagging_rule->lookup = 0;
outer_tagging_rule->ingress_port.value = port;
outer_tagging_rule->ingress_port.mask = GENMASK(key_length - 1, 0);
outer_tagging_rule->egress_port.value = upstream;
outer_tagging_rule->egress_port.mask = GENMASK(key_length - 1, 0);
outer_tagging_rule->action.push_outer_tag = OCELOT_ES0_TAG;
outer_tagging_rule->action.tag_a_tpid_sel = OCELOT_TAG_TPID_SEL_8021AD;
outer_tagging_rule->action.tag_a_vid_sel = 1;
outer_tagging_rule->action.vid_a_val = vid;
err = ocelot_vcap_filter_add(ocelot, outer_tagging_rule, NULL);
if (err)
kfree(outer_tagging_rule);
return err;
}
static int felix_tag_8021q_vlan_del_rx(struct dsa_switch *ds, int port,
int upstream, u16 vid)
{
struct ocelot_vcap_filter *outer_tagging_rule;
struct ocelot_vcap_block *block_vcap_es0;
struct ocelot *ocelot = ds->priv;
unsigned long cookie;
block_vcap_es0 = &ocelot->block[VCAP_ES0];
cookie = OCELOT_VCAP_ES0_TAG_8021Q_RXVLAN(ocelot, port, upstream);
outer_tagging_rule = ocelot_vcap_block_find_filter_by_id(block_vcap_es0,
cookie, false);
if (!outer_tagging_rule)
return -ENOENT;
return ocelot_vcap_filter_del(ocelot, outer_tagging_rule);
}
/* Set up VCAP IS1 rules for stripping the tag_8021q VLAN on TX and VCAP IS2
* rules for steering those tagged packets towards the correct destination port
*/
static int felix_tag_8021q_vlan_add_tx(struct dsa_switch *ds, int port,
u16 vid)
{
struct ocelot_vcap_filter *untagging_rule, *redirect_rule;
unsigned long cpu_ports = dsa_cpu_ports(ds);
struct ocelot *ocelot = ds->priv;
unsigned long cookie;
int err;
untagging_rule = kzalloc(sizeof(struct ocelot_vcap_filter), GFP_KERNEL);
if (!untagging_rule)
return -ENOMEM;
redirect_rule = kzalloc(sizeof(struct ocelot_vcap_filter), GFP_KERNEL);
if (!redirect_rule) {
kfree(untagging_rule);
return -ENOMEM;
}
cookie = OCELOT_VCAP_IS1_TAG_8021Q_TXVLAN(ocelot, port);
untagging_rule->key_type = OCELOT_VCAP_KEY_ANY;
untagging_rule->ingress_port_mask = cpu_ports;
untagging_rule->vlan.vid.value = vid;
untagging_rule->vlan.vid.mask = VLAN_VID_MASK;
untagging_rule->prio = 1;
untagging_rule->id.cookie = cookie;
untagging_rule->id.tc_offload = false;
untagging_rule->block_id = VCAP_IS1;
untagging_rule->type = OCELOT_VCAP_FILTER_OFFLOAD;
untagging_rule->lookup = 0;
untagging_rule->action.vlan_pop_cnt_ena = true;
untagging_rule->action.vlan_pop_cnt = 1;
untagging_rule->action.pag_override_mask = 0xff;
untagging_rule->action.pag_val = port;
err = ocelot_vcap_filter_add(ocelot, untagging_rule, NULL);
if (err) {
kfree(untagging_rule);
kfree(redirect_rule);
return err;
}
cookie = OCELOT_VCAP_IS2_TAG_8021Q_TXVLAN(ocelot, port);
redirect_rule->key_type = OCELOT_VCAP_KEY_ANY;
redirect_rule->ingress_port_mask = cpu_ports;
redirect_rule->pag = port;
redirect_rule->prio = 1;
redirect_rule->id.cookie = cookie;
redirect_rule->id.tc_offload = false;
redirect_rule->block_id = VCAP_IS2;
redirect_rule->type = OCELOT_VCAP_FILTER_OFFLOAD;
redirect_rule->lookup = 0;
redirect_rule->action.mask_mode = OCELOT_MASK_MODE_REDIRECT;
redirect_rule->action.port_mask = BIT(port);
err = ocelot_vcap_filter_add(ocelot, redirect_rule, NULL);
if (err) {
ocelot_vcap_filter_del(ocelot, untagging_rule);
kfree(redirect_rule);
return err;
}
return 0;
}
static int felix_tag_8021q_vlan_del_tx(struct dsa_switch *ds, int port, u16 vid)
{
struct ocelot_vcap_filter *untagging_rule, *redirect_rule;
struct ocelot_vcap_block *block_vcap_is1;
struct ocelot_vcap_block *block_vcap_is2;
struct ocelot *ocelot = ds->priv;
unsigned long cookie;
int err;
block_vcap_is1 = &ocelot->block[VCAP_IS1];
block_vcap_is2 = &ocelot->block[VCAP_IS2];
cookie = OCELOT_VCAP_IS1_TAG_8021Q_TXVLAN(ocelot, port);
untagging_rule = ocelot_vcap_block_find_filter_by_id(block_vcap_is1,
cookie, false);
if (!untagging_rule)
return -ENOENT;
err = ocelot_vcap_filter_del(ocelot, untagging_rule);
if (err)
return err;
cookie = OCELOT_VCAP_IS2_TAG_8021Q_TXVLAN(ocelot, port);
redirect_rule = ocelot_vcap_block_find_filter_by_id(block_vcap_is2,
cookie, false);
if (!redirect_rule)
return -ENOENT;
return ocelot_vcap_filter_del(ocelot, redirect_rule);
}
static int felix_tag_8021q_vlan_add(struct dsa_switch *ds, int port, u16 vid,
u16 flags)
{
struct dsa_port *cpu_dp;
int err;
/* tag_8021q.c assumes we are implementing this via port VLAN
* membership, which we aren't. So we don't need to add any VCAP filter
* for the CPU port.
*/
if (!dsa_is_user_port(ds, port))
return 0;
dsa_switch_for_each_cpu_port(cpu_dp, ds) {
err = felix_tag_8021q_vlan_add_rx(ds, port, cpu_dp->index, vid);
if (err)
return err;
}
err = felix_tag_8021q_vlan_add_tx(ds, port, vid);
if (err)
goto add_tx_failed;
return 0;
add_tx_failed:
dsa_switch_for_each_cpu_port(cpu_dp, ds)
felix_tag_8021q_vlan_del_rx(ds, port, cpu_dp->index, vid);
return err;
}
static int felix_tag_8021q_vlan_del(struct dsa_switch *ds, int port, u16 vid)
{
struct dsa_port *cpu_dp;
int err;
if (!dsa_is_user_port(ds, port))
return 0;
dsa_switch_for_each_cpu_port(cpu_dp, ds) {
err = felix_tag_8021q_vlan_del_rx(ds, port, cpu_dp->index, vid);
if (err)
return err;
}
err = felix_tag_8021q_vlan_del_tx(ds, port, vid);
if (err)
goto del_tx_failed;
return 0;
del_tx_failed:
dsa_switch_for_each_cpu_port(cpu_dp, ds)
felix_tag_8021q_vlan_add_rx(ds, port, cpu_dp->index, vid);
return err;
}
static int felix_trap_get_cpu_port(struct dsa_switch *ds,
const struct ocelot_vcap_filter *trap)
{
struct dsa_port *dp;
int first_port;
if (WARN_ON(!trap->ingress_port_mask))
return -1;
first_port = __ffs(trap->ingress_port_mask);
dp = dsa_to_port(ds, first_port);
return dp->cpu_dp->index;
}
/* On switches with no extraction IRQ wired, trapped packets need to be
* replicated over Ethernet as well, otherwise we'd get no notification of
* their arrival when using the ocelot-8021q tagging protocol.
*/
static int felix_update_trapping_destinations(struct dsa_switch *ds,
bool using_tag_8021q)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
struct ocelot_vcap_block *block_vcap_is2;
struct ocelot_vcap_filter *trap;
enum ocelot_mask_mode mask_mode;
unsigned long port_mask;
bool cpu_copy_ena;
int err;
if (!felix->info->quirk_no_xtr_irq)
return 0;
/* We are sure that "cpu" was found, otherwise
* dsa_tree_setup_default_cpu() would have failed earlier.
*/
block_vcap_is2 = &ocelot->block[VCAP_IS2];
/* Make sure all traps are set up for that destination */
list_for_each_entry(trap, &block_vcap_is2->rules, list) {
if (!trap->is_trap)
continue;
/* Figure out the current trapping destination */
if (using_tag_8021q) {
/* Redirect to the tag_8021q CPU port. If timestamps
* are necessary, also copy trapped packets to the CPU
* port module.
*/
mask_mode = OCELOT_MASK_MODE_REDIRECT;
port_mask = BIT(felix_trap_get_cpu_port(ds, trap));
cpu_copy_ena = !!trap->take_ts;
} else {
/* Trap packets only to the CPU port module, which is
* redirected to the NPI port (the DSA CPU port)
*/
mask_mode = OCELOT_MASK_MODE_PERMIT_DENY;
port_mask = 0;
cpu_copy_ena = true;
}
if (trap->action.mask_mode == mask_mode &&
trap->action.port_mask == port_mask &&
trap->action.cpu_copy_ena == cpu_copy_ena)
continue;
trap->action.mask_mode = mask_mode;
trap->action.port_mask = port_mask;
trap->action.cpu_copy_ena = cpu_copy_ena;
err = ocelot_vcap_filter_replace(ocelot, trap);
if (err)
return err;
}
return 0;
}
/* The CPU port module is connected to the Node Processor Interface (NPI). This
* is the mode through which frames can be injected from and extracted to an
* external CPU, over Ethernet. In NXP SoCs, the "external CPU" is the ARM CPU
* running Linux, and this forms a DSA setup together with the enetc or fman
* DSA master.
*/
static void felix_npi_port_init(struct ocelot *ocelot, int port)
{
ocelot->npi = port;
ocelot_write(ocelot, QSYS_EXT_CPU_CFG_EXT_CPUQ_MSK_M |
QSYS_EXT_CPU_CFG_EXT_CPU_PORT(port),
QSYS_EXT_CPU_CFG);
/* NPI port Injection/Extraction configuration */
ocelot_fields_write(ocelot, port, SYS_PORT_MODE_INCL_XTR_HDR,
ocelot->npi_xtr_prefix);
ocelot_fields_write(ocelot, port, SYS_PORT_MODE_INCL_INJ_HDR,
ocelot->npi_inj_prefix);
/* Disable transmission of pause frames */
ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 0);
}
static void felix_npi_port_deinit(struct ocelot *ocelot, int port)
{
/* Restore hardware defaults */
int unused_port = ocelot->num_phys_ports + 2;
ocelot->npi = -1;
ocelot_write(ocelot, QSYS_EXT_CPU_CFG_EXT_CPU_PORT(unused_port),
QSYS_EXT_CPU_CFG);
ocelot_fields_write(ocelot, port, SYS_PORT_MODE_INCL_XTR_HDR,
OCELOT_TAG_PREFIX_DISABLED);
ocelot_fields_write(ocelot, port, SYS_PORT_MODE_INCL_INJ_HDR,
OCELOT_TAG_PREFIX_DISABLED);
/* Enable transmission of pause frames */
ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 1);
}
static int felix_tag_npi_setup(struct dsa_switch *ds)
{
struct dsa_port *dp, *first_cpu_dp = NULL;
struct ocelot *ocelot = ds->priv;
dsa_switch_for_each_user_port(dp, ds) {
if (first_cpu_dp && dp->cpu_dp != first_cpu_dp) {
dev_err(ds->dev, "Multiple NPI ports not supported\n");
return -EINVAL;
}
first_cpu_dp = dp->cpu_dp;
}
if (!first_cpu_dp)
return -EINVAL;
felix_npi_port_init(ocelot, first_cpu_dp->index);
return 0;
}
static void felix_tag_npi_teardown(struct dsa_switch *ds)
{
struct ocelot *ocelot = ds->priv;
felix_npi_port_deinit(ocelot, ocelot->npi);
}
static unsigned long felix_tag_npi_get_host_fwd_mask(struct dsa_switch *ds)
{
struct ocelot *ocelot = ds->priv;
return BIT(ocelot->num_phys_ports);
}
static int felix_tag_npi_change_master(struct dsa_switch *ds, int port,
struct net_device *master,
struct netlink_ext_ack *extack)
{
struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
struct ocelot *ocelot = ds->priv;
if (netif_is_lag_master(master)) {
NL_SET_ERR_MSG_MOD(extack,
"LAG DSA master only supported using ocelot-8021q");
return -EOPNOTSUPP;
}
/* Changing the NPI port breaks user ports still assigned to the old
* one, so only allow it while they're down, and don't allow them to
* come back up until they're all changed to the new one.
*/
dsa_switch_for_each_user_port(other_dp, ds) {
struct net_device *slave = other_dp->slave;
if (other_dp != dp && (slave->flags & IFF_UP) &&
dsa_port_to_master(other_dp) != master) {
NL_SET_ERR_MSG_MOD(extack,
"Cannot change while old master still has users");
return -EOPNOTSUPP;
}
}
felix_npi_port_deinit(ocelot, ocelot->npi);
felix_npi_port_init(ocelot, felix_cpu_port_for_master(ds, master));
return 0;
}
/* Alternatively to using the NPI functionality, that same hardware MAC
* connected internally to the enetc or fman DSA master can be configured to
* use the software-defined tag_8021q frame format. As far as the hardware is
* concerned, it thinks it is a "dumb switch" - the queues of the CPU port
* module are now disconnected from it, but can still be accessed through
* register-based MMIO.
*/
static const struct felix_tag_proto_ops felix_tag_npi_proto_ops = {
.setup = felix_tag_npi_setup,
.teardown = felix_tag_npi_teardown,
.get_host_fwd_mask = felix_tag_npi_get_host_fwd_mask,
.change_master = felix_tag_npi_change_master,
};
static int felix_tag_8021q_setup(struct dsa_switch *ds)
{
struct ocelot *ocelot = ds->priv;
struct dsa_port *dp;
int err;
err = dsa_tag_8021q_register(ds, htons(ETH_P_8021AD));
if (err)
return err;
dsa_switch_for_each_cpu_port(dp, ds)
ocelot_port_setup_dsa_8021q_cpu(ocelot, dp->index);
dsa_switch_for_each_user_port(dp, ds)
ocelot_port_assign_dsa_8021q_cpu(ocelot, dp->index,
dp->cpu_dp->index);
dsa_switch_for_each_available_port(dp, ds)
/* This overwrites ocelot_init():
* Do not forward BPDU frames to the CPU port module,
* for 2 reasons:
* - When these packets are injected from the tag_8021q
* CPU port, we want them to go out, not loop back
* into the system.
* - STP traffic ingressing on a user port should go to
* the tag_8021q CPU port, not to the hardware CPU
* port module.
*/
ocelot_write_gix(ocelot,
ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0),
ANA_PORT_CPU_FWD_BPDU_CFG, dp->index);
/* The ownership of the CPU port module's queues might have just been
* transferred to the tag_8021q tagger from the NPI-based tagger.
* So there might still be all sorts of crap in the queues. On the
* other hand, the MMIO-based matching of PTP frames is very brittle,
* so we need to be careful that there are no extra frames to be
* dequeued over MMIO, since we would never know to discard them.
*/
ocelot_drain_cpu_queue(ocelot, 0);
return 0;
}
static void felix_tag_8021q_teardown(struct dsa_switch *ds)
{
struct ocelot *ocelot = ds->priv;
struct dsa_port *dp;
dsa_switch_for_each_available_port(dp, ds)
/* Restore the logic from ocelot_init:
* do not forward BPDU frames to the front ports.
*/
ocelot_write_gix(ocelot,
ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0xffff),
ANA_PORT_CPU_FWD_BPDU_CFG,
dp->index);
dsa_switch_for_each_user_port(dp, ds)
ocelot_port_unassign_dsa_8021q_cpu(ocelot, dp->index);
dsa_switch_for_each_cpu_port(dp, ds)
ocelot_port_teardown_dsa_8021q_cpu(ocelot, dp->index);
dsa_tag_8021q_unregister(ds);
}
static unsigned long felix_tag_8021q_get_host_fwd_mask(struct dsa_switch *ds)
{
return dsa_cpu_ports(ds);
}
static int felix_tag_8021q_change_master(struct dsa_switch *ds, int port,
struct net_device *master,
struct netlink_ext_ack *extack)
{
int cpu = felix_cpu_port_for_master(ds, master);
struct ocelot *ocelot = ds->priv;
ocelot_port_unassign_dsa_8021q_cpu(ocelot, port);
ocelot_port_assign_dsa_8021q_cpu(ocelot, port, cpu);
return felix_update_trapping_destinations(ds, true);
}
static const struct felix_tag_proto_ops felix_tag_8021q_proto_ops = {
.setup = felix_tag_8021q_setup,
.teardown = felix_tag_8021q_teardown,
.get_host_fwd_mask = felix_tag_8021q_get_host_fwd_mask,
.change_master = felix_tag_8021q_change_master,
};
static void felix_set_host_flood(struct dsa_switch *ds, unsigned long mask,
bool uc, bool mc, bool bc)
{
struct ocelot *ocelot = ds->priv;
unsigned long val;
val = uc ? mask : 0;
ocelot_rmw_rix(ocelot, val, mask, ANA_PGID_PGID, PGID_UC);
val = mc ? mask : 0;
ocelot_rmw_rix(ocelot, val, mask, ANA_PGID_PGID, PGID_MC);
ocelot_rmw_rix(ocelot, val, mask, ANA_PGID_PGID, PGID_MCIPV4);
ocelot_rmw_rix(ocelot, val, mask, ANA_PGID_PGID, PGID_MCIPV6);
val = bc ? mask : 0;
ocelot_rmw_rix(ocelot, val, mask, ANA_PGID_PGID, PGID_BC);
}
static void
felix_migrate_host_flood(struct dsa_switch *ds,
const struct felix_tag_proto_ops *proto_ops,
const struct felix_tag_proto_ops *old_proto_ops)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
unsigned long mask;
if (old_proto_ops) {
mask = old_proto_ops->get_host_fwd_mask(ds);
felix_set_host_flood(ds, mask, false, false, false);
}
mask = proto_ops->get_host_fwd_mask(ds);
felix_set_host_flood(ds, mask, !!felix->host_flood_uc_mask,
!!felix->host_flood_mc_mask, true);
}
static int felix_migrate_mdbs(struct dsa_switch *ds,
const struct felix_tag_proto_ops *proto_ops,
const struct felix_tag_proto_ops *old_proto_ops)
{
struct ocelot *ocelot = ds->priv;
unsigned long from, to;
if (!old_proto_ops)
return 0;
from = old_proto_ops->get_host_fwd_mask(ds);
to = proto_ops->get_host_fwd_mask(ds);
return ocelot_migrate_mdbs(ocelot, from, to);
}
/* Configure the shared hardware resources for a transition between
* @old_proto_ops and @proto_ops.
* Manual migration is needed because as far as DSA is concerned, no change of
* the CPU port is taking place here, just of the tagging protocol.
*/
static int
felix_tag_proto_setup_shared(struct dsa_switch *ds,
const struct felix_tag_proto_ops *proto_ops,
const struct felix_tag_proto_ops *old_proto_ops)
{
bool using_tag_8021q = (proto_ops == &felix_tag_8021q_proto_ops);
int err;
err = felix_migrate_mdbs(ds, proto_ops, old_proto_ops);
if (err)
return err;
felix_update_trapping_destinations(ds, using_tag_8021q);
felix_migrate_host_flood(ds, proto_ops, old_proto_ops);
return 0;
}
/* This always leaves the switch in a consistent state, because although the
* tag_8021q setup can fail, the NPI setup can't. So either the change is made,
* or the restoration is guaranteed to work.
*/
static int felix_change_tag_protocol(struct dsa_switch *ds,
enum dsa_tag_protocol proto)
{
const struct felix_tag_proto_ops *old_proto_ops, *proto_ops;
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
int err;
switch (proto) {
case DSA_TAG_PROTO_SEVILLE:
case DSA_TAG_PROTO_OCELOT:
proto_ops = &felix_tag_npi_proto_ops;
break;
case DSA_TAG_PROTO_OCELOT_8021Q:
proto_ops = &felix_tag_8021q_proto_ops;
break;
default:
return -EPROTONOSUPPORT;
}
old_proto_ops = felix->tag_proto_ops;
if (proto_ops == old_proto_ops)
return 0;
err = proto_ops->setup(ds);
if (err)
goto setup_failed;
err = felix_tag_proto_setup_shared(ds, proto_ops, old_proto_ops);
if (err)
goto setup_shared_failed;
if (old_proto_ops)
old_proto_ops->teardown(ds);
felix->tag_proto_ops = proto_ops;
felix->tag_proto = proto;
return 0;
setup_shared_failed:
proto_ops->teardown(ds);
setup_failed:
return err;
}
static enum dsa_tag_protocol felix_get_tag_protocol(struct dsa_switch *ds,
int port,
enum dsa_tag_protocol mp)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
return felix->tag_proto;
}
static void felix_port_set_host_flood(struct dsa_switch *ds, int port,
bool uc, bool mc)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
unsigned long mask;
if (uc)
felix->host_flood_uc_mask |= BIT(port);
else
felix->host_flood_uc_mask &= ~BIT(port);
if (mc)
felix->host_flood_mc_mask |= BIT(port);
else
felix->host_flood_mc_mask &= ~BIT(port);
mask = felix->tag_proto_ops->get_host_fwd_mask(ds);
felix_set_host_flood(ds, mask, !!felix->host_flood_uc_mask,
!!felix->host_flood_mc_mask, true);
}
static int felix_port_change_master(struct dsa_switch *ds, int port,
struct net_device *master,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
return felix->tag_proto_ops->change_master(ds, port, master, extack);
}
static int felix_set_ageing_time(struct dsa_switch *ds,
unsigned int ageing_time)
{
struct ocelot *ocelot = ds->priv;
ocelot_set_ageing_time(ocelot, ageing_time);
return 0;
}
static void felix_port_fast_age(struct dsa_switch *ds, int port)
{
struct ocelot *ocelot = ds->priv;
int err;
err = ocelot_mact_flush(ocelot, port);
if (err)
dev_err(ds->dev, "Flushing MAC table on port %d returned %pe\n",
port, ERR_PTR(err));
}
static int felix_fdb_dump(struct dsa_switch *ds, int port,
dsa_fdb_dump_cb_t *cb, void *data)
{
struct ocelot *ocelot = ds->priv;
return ocelot_fdb_dump(ocelot, port, cb, data);
}
static int felix_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
struct dsa_db db)
{
struct net_device *bridge_dev = felix_classify_db(db);
struct dsa_port *dp = dsa_to_port(ds, port);
struct ocelot *ocelot = ds->priv;
if (IS_ERR(bridge_dev))
return PTR_ERR(bridge_dev);
if (dsa_port_is_cpu(dp) && !bridge_dev &&
dsa_fdb_present_in_other_db(ds, port, addr, vid, db))
return 0;
if (dsa_port_is_cpu(dp))
port = PGID_CPU;
return ocelot_fdb_add(ocelot, port, addr, vid, bridge_dev);
}
static int felix_fdb_del(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
struct dsa_db db)
{
struct net_device *bridge_dev = felix_classify_db(db);
struct dsa_port *dp = dsa_to_port(ds, port);
struct ocelot *ocelot = ds->priv;
if (IS_ERR(bridge_dev))
return PTR_ERR(bridge_dev);
if (dsa_port_is_cpu(dp) && !bridge_dev &&
dsa_fdb_present_in_other_db(ds, port, addr, vid, db))
return 0;
if (dsa_port_is_cpu(dp))
port = PGID_CPU;
return ocelot_fdb_del(ocelot, port, addr, vid, bridge_dev);
}
static int felix_lag_fdb_add(struct dsa_switch *ds, struct dsa_lag lag,
const unsigned char *addr, u16 vid,
struct dsa_db db)
{
struct net_device *bridge_dev = felix_classify_db(db);
struct ocelot *ocelot = ds->priv;
if (IS_ERR(bridge_dev))
return PTR_ERR(bridge_dev);
return ocelot_lag_fdb_add(ocelot, lag.dev, addr, vid, bridge_dev);
}
static int felix_lag_fdb_del(struct dsa_switch *ds, struct dsa_lag lag,
const unsigned char *addr, u16 vid,
struct dsa_db db)
{
struct net_device *bridge_dev = felix_classify_db(db);
struct ocelot *ocelot = ds->priv;
if (IS_ERR(bridge_dev))
return PTR_ERR(bridge_dev);
return ocelot_lag_fdb_del(ocelot, lag.dev, addr, vid, bridge_dev);
}
static int felix_mdb_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_mdb *mdb,
struct dsa_db db)
{
struct net_device *bridge_dev = felix_classify_db(db);
struct ocelot *ocelot = ds->priv;
if (IS_ERR(bridge_dev))
return PTR_ERR(bridge_dev);
if (dsa_is_cpu_port(ds, port) && !bridge_dev &&
dsa_mdb_present_in_other_db(ds, port, mdb, db))
return 0;
if (port == ocelot->npi)
port = ocelot->num_phys_ports;
return ocelot_port_mdb_add(ocelot, port, mdb, bridge_dev);
}
static int felix_mdb_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_mdb *mdb,
struct dsa_db db)
{
struct net_device *bridge_dev = felix_classify_db(db);
struct ocelot *ocelot = ds->priv;
if (IS_ERR(bridge_dev))
return PTR_ERR(bridge_dev);
if (dsa_is_cpu_port(ds, port) && !bridge_dev &&
dsa_mdb_present_in_other_db(ds, port, mdb, db))
return 0;
if (port == ocelot->npi)
port = ocelot->num_phys_ports;
return ocelot_port_mdb_del(ocelot, port, mdb, bridge_dev);
}
static void felix_bridge_stp_state_set(struct dsa_switch *ds, int port,
u8 state)
{
struct ocelot *ocelot = ds->priv;
return ocelot_bridge_stp_state_set(ocelot, port, state);
}
static int felix_pre_bridge_flags(struct dsa_switch *ds, int port,
struct switchdev_brport_flags val,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_pre_bridge_flags(ocelot, port, val);
}
static int felix_bridge_flags(struct dsa_switch *ds, int port,
struct switchdev_brport_flags val,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
if (port == ocelot->npi)
port = ocelot->num_phys_ports;
ocelot_port_bridge_flags(ocelot, port, val);
return 0;
}
static int felix_bridge_join(struct dsa_switch *ds, int port,
struct dsa_bridge bridge, bool *tx_fwd_offload,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_bridge_join(ocelot, port, bridge.dev, bridge.num,
extack);
}
static void felix_bridge_leave(struct dsa_switch *ds, int port,
struct dsa_bridge bridge)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_bridge_leave(ocelot, port, bridge.dev);
}
static int felix_lag_join(struct dsa_switch *ds, int port,
struct dsa_lag lag,
struct netdev_lag_upper_info *info,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
int err;
err = ocelot_port_lag_join(ocelot, port, lag.dev, info, extack);
if (err)
return err;
/* Update the logical LAG port that serves as tag_8021q CPU port */
if (!dsa_is_cpu_port(ds, port))
return 0;
return felix_port_change_master(ds, port, lag.dev, extack);
}
static int felix_lag_leave(struct dsa_switch *ds, int port,
struct dsa_lag lag)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_lag_leave(ocelot, port, lag.dev);
/* Update the logical LAG port that serves as tag_8021q CPU port */
if (!dsa_is_cpu_port(ds, port))
return 0;
return felix_port_change_master(ds, port, lag.dev, NULL);
}
static int felix_lag_change(struct dsa_switch *ds, int port)
{
struct dsa_port *dp = dsa_to_port(ds, port);
struct ocelot *ocelot = ds->priv;
ocelot_port_lag_change(ocelot, port, dp->lag_tx_enabled);
return 0;
}
static int felix_vlan_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
u16 flags = vlan->flags;
/* Ocelot switches copy frames as-is to the CPU, so the flags:
* egress-untagged or not, pvid or not, make no difference. This
* behavior is already better than what DSA just tries to approximate
* when it installs the VLAN with the same flags on the CPU port.
* Just accept any configuration, and don't let ocelot deny installing
* multiple native VLANs on the NPI port, because the switch doesn't
* look at the port tag settings towards the NPI interface anyway.
*/
if (port == ocelot->npi)
return 0;
return ocelot_vlan_prepare(ocelot, port, vlan->vid,
flags & BRIDGE_VLAN_INFO_PVID,
flags & BRIDGE_VLAN_INFO_UNTAGGED,
extack);
}
static int felix_vlan_filtering(struct dsa_switch *ds, int port, bool enabled,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_vlan_filtering(ocelot, port, enabled, extack);
}
static int felix_vlan_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
u16 flags = vlan->flags;
int err;
err = felix_vlan_prepare(ds, port, vlan, extack);
if (err)
return err;
return ocelot_vlan_add(ocelot, port, vlan->vid,
flags & BRIDGE_VLAN_INFO_PVID,
flags & BRIDGE_VLAN_INFO_UNTAGGED);
}
static int felix_vlan_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan)
{
struct ocelot *ocelot = ds->priv;
return ocelot_vlan_del(ocelot, port, vlan->vid);
}
static void felix_phylink_get_caps(struct dsa_switch *ds, int port,
struct phylink_config *config)
{
struct ocelot *ocelot = ds->priv;
/* This driver does not make use of the speed, duplex, pause or the
* advertisement in its mac_config, so it is safe to mark this driver
* as non-legacy.
*/
config->legacy_pre_march2020 = false;
config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_10 | MAC_100 | MAC_1000FD |
MAC_2500FD;
__set_bit(ocelot->ports[port]->phy_mode,
config->supported_interfaces);
}
static struct phylink_pcs *felix_phylink_mac_select_pcs(struct dsa_switch *ds,
int port,
phy_interface_t iface)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
struct phylink_pcs *pcs = NULL;
if (felix->pcs && felix->pcs[port])
pcs = felix->pcs[port];
return pcs;
}
static void felix_phylink_mac_link_down(struct dsa_switch *ds, int port,
unsigned int link_an_mode,
phy_interface_t interface)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix;
felix = ocelot_to_felix(ocelot);
ocelot_phylink_mac_link_down(ocelot, port, link_an_mode, interface,
felix->info->quirks);
}
static void felix_phylink_mac_link_up(struct dsa_switch *ds, int port,
unsigned int link_an_mode,
phy_interface_t interface,
struct phy_device *phydev,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
ocelot_phylink_mac_link_up(ocelot, port, phydev, link_an_mode,
interface, speed, duplex, tx_pause, rx_pause,
felix->info->quirks);
if (felix->info->port_sched_speed_set)
felix->info->port_sched_speed_set(ocelot, port, speed);
}
static int felix_port_enable(struct dsa_switch *ds, int port,
struct phy_device *phydev)
{
struct dsa_port *dp = dsa_to_port(ds, port);
struct ocelot *ocelot = ds->priv;
if (!dsa_port_is_user(dp))
return 0;
if (ocelot->npi >= 0) {
struct net_device *master = dsa_port_to_master(dp);
if (felix_cpu_port_for_master(ds, master) != ocelot->npi) {
dev_err(ds->dev, "Multiple masters are not allowed\n");
return -EINVAL;
}
}
return 0;
}
static void felix_port_qos_map_init(struct ocelot *ocelot, int port)
{
int i;
ocelot_rmw_gix(ocelot,
ANA_PORT_QOS_CFG_QOS_PCP_ENA,
ANA_PORT_QOS_CFG_QOS_PCP_ENA,
ANA_PORT_QOS_CFG,
port);
for (i = 0; i < OCELOT_NUM_TC * 2; i++) {
ocelot_rmw_ix(ocelot,
(ANA_PORT_PCP_DEI_MAP_DP_PCP_DEI_VAL & i) |
ANA_PORT_PCP_DEI_MAP_QOS_PCP_DEI_VAL(i),
ANA_PORT_PCP_DEI_MAP_DP_PCP_DEI_VAL |
ANA_PORT_PCP_DEI_MAP_QOS_PCP_DEI_VAL_M,
ANA_PORT_PCP_DEI_MAP,
port, i);
}
}
static void felix_get_stats64(struct dsa_switch *ds, int port,
struct rtnl_link_stats64 *stats)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_get_stats64(ocelot, port, stats);
}
static void felix_get_pause_stats(struct dsa_switch *ds, int port,
struct ethtool_pause_stats *pause_stats)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_get_pause_stats(ocelot, port, pause_stats);
}
static void felix_get_rmon_stats(struct dsa_switch *ds, int port,
struct ethtool_rmon_stats *rmon_stats,
const struct ethtool_rmon_hist_range **ranges)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_get_rmon_stats(ocelot, port, rmon_stats, ranges);
}
static void felix_get_eth_ctrl_stats(struct dsa_switch *ds, int port,
struct ethtool_eth_ctrl_stats *ctrl_stats)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_get_eth_ctrl_stats(ocelot, port, ctrl_stats);
}
static void felix_get_eth_mac_stats(struct dsa_switch *ds, int port,
struct ethtool_eth_mac_stats *mac_stats)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_get_eth_mac_stats(ocelot, port, mac_stats);
}
static void felix_get_eth_phy_stats(struct dsa_switch *ds, int port,
struct ethtool_eth_phy_stats *phy_stats)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_get_eth_phy_stats(ocelot, port, phy_stats);
}
static void felix_get_strings(struct dsa_switch *ds, int port,
u32 stringset, u8 *data)
{
struct ocelot *ocelot = ds->priv;
return ocelot_get_strings(ocelot, port, stringset, data);
}
static void felix_get_ethtool_stats(struct dsa_switch *ds, int port, u64 *data)
{
struct ocelot *ocelot = ds->priv;
ocelot_get_ethtool_stats(ocelot, port, data);
}
static int felix_get_sset_count(struct dsa_switch *ds, int port, int sset)
{
struct ocelot *ocelot = ds->priv;
return ocelot_get_sset_count(ocelot, port, sset);
}
static int felix_get_ts_info(struct dsa_switch *ds, int port,
struct ethtool_ts_info *info)
{
struct ocelot *ocelot = ds->priv;
return ocelot_get_ts_info(ocelot, port, info);
}
static const u32 felix_phy_match_table[PHY_INTERFACE_MODE_MAX] = {
[PHY_INTERFACE_MODE_INTERNAL] = OCELOT_PORT_MODE_INTERNAL,
[PHY_INTERFACE_MODE_SGMII] = OCELOT_PORT_MODE_SGMII,
[PHY_INTERFACE_MODE_QSGMII] = OCELOT_PORT_MODE_QSGMII,
[PHY_INTERFACE_MODE_USXGMII] = OCELOT_PORT_MODE_USXGMII,
[PHY_INTERFACE_MODE_1000BASEX] = OCELOT_PORT_MODE_1000BASEX,
[PHY_INTERFACE_MODE_2500BASEX] = OCELOT_PORT_MODE_2500BASEX,
};
static int felix_validate_phy_mode(struct felix *felix, int port,
phy_interface_t phy_mode)
{
u32 modes = felix->info->port_modes[port];
if (felix_phy_match_table[phy_mode] & modes)
return 0;
return -EOPNOTSUPP;
}
static int felix_parse_ports_node(struct felix *felix,
struct device_node *ports_node,
phy_interface_t *port_phy_modes)
{
struct device *dev = felix->ocelot.dev;
struct device_node *child;
for_each_available_child_of_node(ports_node, child) {
phy_interface_t phy_mode;
u32 port;
int err;
/* Get switch port number from DT */
if (of_property_read_u32(child, "reg", &port) < 0) {
dev_err(dev, "Port number not defined in device tree "
"(property \"reg\")\n");
of_node_put(child);
return -ENODEV;
}
/* Get PHY mode from DT */
err = of_get_phy_mode(child, &phy_mode);
if (err) {
dev_err(dev, "Failed to read phy-mode or "
"phy-interface-type property for port %d\n",
port);
of_node_put(child);
return -ENODEV;
}
err = felix_validate_phy_mode(felix, port, phy_mode);
if (err < 0) {
dev_info(dev, "Unsupported PHY mode %s on port %d\n",
phy_modes(phy_mode), port);
of_node_put(child);
/* Leave port_phy_modes[port] = 0, which is also
* PHY_INTERFACE_MODE_NA. This will perform a
* best-effort to bring up as many ports as possible.
*/
continue;
}
port_phy_modes[port] = phy_mode;
}
return 0;
}
static int felix_parse_dt(struct felix *felix, phy_interface_t *port_phy_modes)
{
struct device *dev = felix->ocelot.dev;
struct device_node *switch_node;
struct device_node *ports_node;
int err;
switch_node = dev->of_node;
ports_node = of_get_child_by_name(switch_node, "ports");
if (!ports_node)
ports_node = of_get_child_by_name(switch_node, "ethernet-ports");
if (!ports_node) {
dev_err(dev, "Incorrect bindings: absent \"ports\" or \"ethernet-ports\" node\n");
return -ENODEV;
}
err = felix_parse_ports_node(felix, ports_node, port_phy_modes);
of_node_put(ports_node);
return err;
}
static struct regmap *felix_request_regmap_by_name(struct felix *felix,
const char *resource_name)
{
struct ocelot *ocelot = &felix->ocelot;
struct resource res;
int i;
/* In an MFD configuration, regmaps are registered directly to the
* parent device before the child devices are probed, so there is no
* need to initialize a new one.
*/
if (!felix->info->resources)
return dev_get_regmap(ocelot->dev->parent, resource_name);
for (i = 0; i < felix->info->num_resources; i++) {
if (strcmp(resource_name, felix->info->resources[i].name))
continue;
memcpy(&res, &felix->info->resources[i], sizeof(res));
res.start += felix->switch_base;
res.end += felix->switch_base;
return ocelot_regmap_init(ocelot, &res);
}
return ERR_PTR(-ENOENT);
}
static struct regmap *felix_request_regmap(struct felix *felix,
enum ocelot_target target)
{
const char *resource_name = felix->info->resource_names[target];
/* If the driver didn't provide a resource name for the target,
* the resource is optional.
*/
if (!resource_name)
return NULL;
return felix_request_regmap_by_name(felix, resource_name);
}
static struct regmap *felix_request_port_regmap(struct felix *felix, int port)
{
char resource_name[32];
sprintf(resource_name, "port%d", port);
return felix_request_regmap_by_name(felix, resource_name);
}
static int felix_init_structs(struct felix *felix, int num_phys_ports)
{
struct ocelot *ocelot = &felix->ocelot;
phy_interface_t *port_phy_modes;
struct regmap *target;
int port, i, err;
ocelot->num_phys_ports = num_phys_ports;
ocelot->ports = devm_kcalloc(ocelot->dev, num_phys_ports,
sizeof(struct ocelot_port *), GFP_KERNEL);
if (!ocelot->ports)
return -ENOMEM;
ocelot->map = felix->info->map;
ocelot->num_mact_rows = felix->info->num_mact_rows;
ocelot->vcap = felix->info->vcap;
ocelot->vcap_pol.base = felix->info->vcap_pol_base;
ocelot->vcap_pol.max = felix->info->vcap_pol_max;
ocelot->vcap_pol.base2 = felix->info->vcap_pol_base2;
ocelot->vcap_pol.max2 = felix->info->vcap_pol_max2;
ocelot->ops = felix->info->ops;
ocelot->npi_inj_prefix = OCELOT_TAG_PREFIX_SHORT;
ocelot->npi_xtr_prefix = OCELOT_TAG_PREFIX_SHORT;
ocelot->devlink = felix->ds->devlink;
port_phy_modes = kcalloc(num_phys_ports, sizeof(phy_interface_t),
GFP_KERNEL);
if (!port_phy_modes)
return -ENOMEM;
err = felix_parse_dt(felix, port_phy_modes);
if (err) {
kfree(port_phy_modes);
return err;
}
for (i = 0; i < TARGET_MAX; i++) {
target = felix_request_regmap(felix, i);
if (IS_ERR(target)) {
dev_err(ocelot->dev,
"Failed to map device memory space: %pe\n",
target);
kfree(port_phy_modes);
return PTR_ERR(target);
}
ocelot->targets[i] = target;
}
err = ocelot_regfields_init(ocelot, felix->info->regfields);
if (err) {
dev_err(ocelot->dev, "failed to init reg fields map\n");
kfree(port_phy_modes);
return err;
}
for (port = 0; port < num_phys_ports; port++) {
struct ocelot_port *ocelot_port;
ocelot_port = devm_kzalloc(ocelot->dev,
sizeof(struct ocelot_port),
GFP_KERNEL);
if (!ocelot_port) {
dev_err(ocelot->dev,
"failed to allocate port memory\n");
kfree(port_phy_modes);
return -ENOMEM;
}
target = felix_request_port_regmap(felix, port);
if (IS_ERR(target)) {
dev_err(ocelot->dev,
"Failed to map memory space for port %d: %pe\n",
port, target);
kfree(port_phy_modes);
return PTR_ERR(target);
}
ocelot_port->phy_mode = port_phy_modes[port];
ocelot_port->ocelot = ocelot;
ocelot_port->target = target;
ocelot_port->index = port;
ocelot->ports[port] = ocelot_port;
}
kfree(port_phy_modes);
if (felix->info->mdio_bus_alloc) {
err = felix->info->mdio_bus_alloc(ocelot);
if (err < 0)
return err;
}
return 0;
}
static void ocelot_port_purge_txtstamp_skb(struct ocelot *ocelot, int port,
struct sk_buff *skb)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
struct sk_buff *clone = OCELOT_SKB_CB(skb)->clone;
struct sk_buff *skb_match = NULL, *skb_tmp;
unsigned long flags;
if (!clone)
return;
spin_lock_irqsave(&ocelot_port->tx_skbs.lock, flags);
skb_queue_walk_safe(&ocelot_port->tx_skbs, skb, skb_tmp) {
if (skb != clone)
continue;
__skb_unlink(skb, &ocelot_port->tx_skbs);
skb_match = skb;
break;
}
spin_unlock_irqrestore(&ocelot_port->tx_skbs.lock, flags);
WARN_ONCE(!skb_match,
"Could not find skb clone in TX timestamping list\n");
}
#define work_to_xmit_work(w) \
container_of((w), struct felix_deferred_xmit_work, work)
static void felix_port_deferred_xmit(struct kthread_work *work)
{
struct felix_deferred_xmit_work *xmit_work = work_to_xmit_work(work);
struct dsa_switch *ds = xmit_work->dp->ds;
struct sk_buff *skb = xmit_work->skb;
u32 rew_op = ocelot_ptp_rew_op(skb);
struct ocelot *ocelot = ds->priv;
int port = xmit_work->dp->index;
int retries = 10;
do {
if (ocelot_can_inject(ocelot, 0))
break;
cpu_relax();
} while (--retries);
if (!retries) {
dev_err(ocelot->dev, "port %d failed to inject skb\n",
port);
ocelot_port_purge_txtstamp_skb(ocelot, port, skb);
kfree_skb(skb);
return;
}
ocelot_port_inject_frame(ocelot, port, 0, rew_op, skb);
consume_skb(skb);
kfree(xmit_work);
}
static int felix_connect_tag_protocol(struct dsa_switch *ds,
enum dsa_tag_protocol proto)
{
struct ocelot_8021q_tagger_data *tagger_data;
switch (proto) {
case DSA_TAG_PROTO_OCELOT_8021Q:
tagger_data = ocelot_8021q_tagger_data(ds);
tagger_data->xmit_work_fn = felix_port_deferred_xmit;
return 0;
case DSA_TAG_PROTO_OCELOT:
case DSA_TAG_PROTO_SEVILLE:
return 0;
default:
return -EPROTONOSUPPORT;
}
}
/* Hardware initialization done here so that we can allocate structures with
* devm without fear of dsa_register_switch returning -EPROBE_DEFER and causing
* us to allocate structures twice (leak memory) and map PCI memory twice
* (which will not work).
*/
static int felix_setup(struct dsa_switch *ds)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
struct dsa_port *dp;
int err;
err = felix_init_structs(felix, ds->num_ports);
if (err)
return err;
err = ocelot_init(ocelot);
if (err)
goto out_mdiobus_free;
if (ocelot->ptp) {
err = ocelot_init_timestamp(ocelot, felix->info->ptp_caps);
if (err) {
dev_err(ocelot->dev,
"Timestamp initialization failed\n");
ocelot->ptp = 0;
}
}
dsa_switch_for_each_available_port(dp, ds) {
ocelot_init_port(ocelot, dp->index);
/* Set the default QoS Classification based on PCP and DEI
* bits of vlan tag.
*/
felix_port_qos_map_init(ocelot, dp->index);
}
err = ocelot_devlink_sb_register(ocelot);
if (err)
goto out_deinit_ports;
/* The initial tag protocol is NPI which won't fail during initial
* setup, there's no real point in checking for errors.
*/
felix_change_tag_protocol(ds, felix->tag_proto);
ds->mtu_enforcement_ingress = true;
ds->assisted_learning_on_cpu_port = true;
ds->fdb_isolation = true;
ds->max_num_bridges = ds->num_ports;
return 0;
out_deinit_ports:
dsa_switch_for_each_available_port(dp, ds)
ocelot_deinit_port(ocelot, dp->index);
ocelot_deinit_timestamp(ocelot);
ocelot_deinit(ocelot);
out_mdiobus_free:
if (felix->info->mdio_bus_free)
felix->info->mdio_bus_free(ocelot);
return err;
}
static void felix_teardown(struct dsa_switch *ds)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
struct dsa_port *dp;
if (felix->tag_proto_ops)
felix->tag_proto_ops->teardown(ds);
dsa_switch_for_each_available_port(dp, ds)
ocelot_deinit_port(ocelot, dp->index);
ocelot_devlink_sb_unregister(ocelot);
ocelot_deinit_timestamp(ocelot);
ocelot_deinit(ocelot);
if (felix->info->mdio_bus_free)
felix->info->mdio_bus_free(ocelot);
}
static int felix_hwtstamp_get(struct dsa_switch *ds, int port,
struct ifreq *ifr)
{
struct ocelot *ocelot = ds->priv;
return ocelot_hwstamp_get(ocelot, port, ifr);
}
static int felix_hwtstamp_set(struct dsa_switch *ds, int port,
struct ifreq *ifr)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
bool using_tag_8021q;
int err;
err = ocelot_hwstamp_set(ocelot, port, ifr);
if (err)
return err;
using_tag_8021q = felix->tag_proto == DSA_TAG_PROTO_OCELOT_8021Q;
return felix_update_trapping_destinations(ds, using_tag_8021q);
}
static bool felix_check_xtr_pkt(struct ocelot *ocelot)
{
struct felix *felix = ocelot_to_felix(ocelot);
int err = 0, grp = 0;
if (felix->tag_proto != DSA_TAG_PROTO_OCELOT_8021Q)
return false;
if (!felix->info->quirk_no_xtr_irq)
return false;
while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp)) {
struct sk_buff *skb;
unsigned int type;
err = ocelot_xtr_poll_frame(ocelot, grp, &skb);
if (err)
goto out;
/* We trap to the CPU port module all PTP frames, but
* felix_rxtstamp() only gets called for event frames.
* So we need to avoid sending duplicate general
* message frames by running a second BPF classifier
* here and dropping those.
*/
__skb_push(skb, ETH_HLEN);
type = ptp_classify_raw(skb);
__skb_pull(skb, ETH_HLEN);
if (type == PTP_CLASS_NONE) {
kfree_skb(skb);
continue;
}
netif_rx(skb);
}
out:
if (err < 0) {
dev_err_ratelimited(ocelot->dev,
"Error during packet extraction: %pe\n",
ERR_PTR(err));
ocelot_drain_cpu_queue(ocelot, 0);
}
return true;
}
static bool felix_rxtstamp(struct dsa_switch *ds, int port,
struct sk_buff *skb, unsigned int type)
{
u32 tstamp_lo = OCELOT_SKB_CB(skb)->tstamp_lo;
struct skb_shared_hwtstamps *shhwtstamps;
struct ocelot *ocelot = ds->priv;
struct timespec64 ts;
u32 tstamp_hi;
u64 tstamp;
/* If the "no XTR IRQ" workaround is in use, tell DSA to defer this skb
* for RX timestamping. Then free it, and poll for its copy through
* MMIO in the CPU port module, and inject that into the stack from
* ocelot_xtr_poll().
*/
if (felix_check_xtr_pkt(ocelot)) {
kfree_skb(skb);
return true;
}
ocelot_ptp_gettime64(&ocelot->ptp_info, &ts);
tstamp = ktime_set(ts.tv_sec, ts.tv_nsec);
tstamp_hi = tstamp >> 32;
if ((tstamp & 0xffffffff) < tstamp_lo)
tstamp_hi--;
tstamp = ((u64)tstamp_hi << 32) | tstamp_lo;
shhwtstamps = skb_hwtstamps(skb);
memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps));
shhwtstamps->hwtstamp = tstamp;
return false;
}
static void felix_txtstamp(struct dsa_switch *ds, int port,
struct sk_buff *skb)
{
struct ocelot *ocelot = ds->priv;
struct sk_buff *clone = NULL;
if (!ocelot->ptp)
return;
if (ocelot_port_txtstamp_request(ocelot, port, skb, &clone)) {
dev_err_ratelimited(ds->dev,
"port %d delivering skb without TX timestamp\n",
port);
return;
}
if (clone)
OCELOT_SKB_CB(skb)->clone = clone;
}
static int felix_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
{
struct ocelot *ocelot = ds->priv;
struct ocelot_port *ocelot_port = ocelot->ports[port];
struct felix *felix = ocelot_to_felix(ocelot);
ocelot_port_set_maxlen(ocelot, port, new_mtu);
mutex_lock(&ocelot->tas_lock);
if (ocelot_port->taprio && felix->info->tas_guard_bands_update)
felix->info->tas_guard_bands_update(ocelot, port);
mutex_unlock(&ocelot->tas_lock);
return 0;
}
static int felix_get_max_mtu(struct dsa_switch *ds, int port)
{
struct ocelot *ocelot = ds->priv;
return ocelot_get_max_mtu(ocelot, port);
}
static int felix_cls_flower_add(struct dsa_switch *ds, int port,
struct flow_cls_offload *cls, bool ingress)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
bool using_tag_8021q;
int err;
err = ocelot_cls_flower_replace(ocelot, port, cls, ingress);
if (err)
return err;
using_tag_8021q = felix->tag_proto == DSA_TAG_PROTO_OCELOT_8021Q;
return felix_update_trapping_destinations(ds, using_tag_8021q);
}
static int felix_cls_flower_del(struct dsa_switch *ds, int port,
struct flow_cls_offload *cls, bool ingress)
{
struct ocelot *ocelot = ds->priv;
return ocelot_cls_flower_destroy(ocelot, port, cls, ingress);
}
static int felix_cls_flower_stats(struct dsa_switch *ds, int port,
struct flow_cls_offload *cls, bool ingress)
{
struct ocelot *ocelot = ds->priv;
return ocelot_cls_flower_stats(ocelot, port, cls, ingress);
}
static int felix_port_policer_add(struct dsa_switch *ds, int port,
struct dsa_mall_policer_tc_entry *policer)
{
struct ocelot *ocelot = ds->priv;
struct ocelot_policer pol = {
.rate = div_u64(policer->rate_bytes_per_sec, 1000) * 8,
.burst = policer->burst,
};
return ocelot_port_policer_add(ocelot, port, &pol);
}
static void felix_port_policer_del(struct dsa_switch *ds, int port)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_policer_del(ocelot, port);
}
static int felix_port_mirror_add(struct dsa_switch *ds, int port,
struct dsa_mall_mirror_tc_entry *mirror,
bool ingress, struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_mirror_add(ocelot, port, mirror->to_local_port,
ingress, extack);
}
static void felix_port_mirror_del(struct dsa_switch *ds, int port,
struct dsa_mall_mirror_tc_entry *mirror)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_mirror_del(ocelot, port, mirror->ingress);
}
static int felix_port_setup_tc(struct dsa_switch *ds, int port,
enum tc_setup_type type,
void *type_data)
{
struct ocelot *ocelot = ds->priv;
struct felix *felix = ocelot_to_felix(ocelot);
if (felix->info->port_setup_tc)
return felix->info->port_setup_tc(ds, port, type, type_data);
else
return -EOPNOTSUPP;
}
static int felix_sb_pool_get(struct dsa_switch *ds, unsigned int sb_index,
u16 pool_index,
struct devlink_sb_pool_info *pool_info)
{
struct ocelot *ocelot = ds->priv;
return ocelot_sb_pool_get(ocelot, sb_index, pool_index, pool_info);
}
static int felix_sb_pool_set(struct dsa_switch *ds, unsigned int sb_index,
u16 pool_index, u32 size,
enum devlink_sb_threshold_type threshold_type,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
return ocelot_sb_pool_set(ocelot, sb_index, pool_index, size,
threshold_type, extack);
}
static int felix_sb_port_pool_get(struct dsa_switch *ds, int port,
unsigned int sb_index, u16 pool_index,
u32 *p_threshold)
{
struct ocelot *ocelot = ds->priv;
return ocelot_sb_port_pool_get(ocelot, port, sb_index, pool_index,
p_threshold);
}
static int felix_sb_port_pool_set(struct dsa_switch *ds, int port,
unsigned int sb_index, u16 pool_index,
u32 threshold, struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
return ocelot_sb_port_pool_set(ocelot, port, sb_index, pool_index,
threshold, extack);
}
static int felix_sb_tc_pool_bind_get(struct dsa_switch *ds, int port,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
u16 *p_pool_index, u32 *p_threshold)
{
struct ocelot *ocelot = ds->priv;
return ocelot_sb_tc_pool_bind_get(ocelot, port, sb_index, tc_index,
pool_type, p_pool_index,
p_threshold);
}
static int felix_sb_tc_pool_bind_set(struct dsa_switch *ds, int port,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
u16 pool_index, u32 threshold,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
return ocelot_sb_tc_pool_bind_set(ocelot, port, sb_index, tc_index,
pool_type, pool_index, threshold,
extack);
}
static int felix_sb_occ_snapshot(struct dsa_switch *ds,
unsigned int sb_index)
{
struct ocelot *ocelot = ds->priv;
return ocelot_sb_occ_snapshot(ocelot, sb_index);
}
static int felix_sb_occ_max_clear(struct dsa_switch *ds,
unsigned int sb_index)
{
struct ocelot *ocelot = ds->priv;
return ocelot_sb_occ_max_clear(ocelot, sb_index);
}
static int felix_sb_occ_port_pool_get(struct dsa_switch *ds, int port,
unsigned int sb_index, u16 pool_index,
u32 *p_cur, u32 *p_max)
{
struct ocelot *ocelot = ds->priv;
return ocelot_sb_occ_port_pool_get(ocelot, port, sb_index, pool_index,
p_cur, p_max);
}
static int felix_sb_occ_tc_port_bind_get(struct dsa_switch *ds, int port,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
u32 *p_cur, u32 *p_max)
{
struct ocelot *ocelot = ds->priv;
return ocelot_sb_occ_tc_port_bind_get(ocelot, port, sb_index, tc_index,
pool_type, p_cur, p_max);
}
static int felix_mrp_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_mrp *mrp)
{
struct ocelot *ocelot = ds->priv;
return ocelot_mrp_add(ocelot, port, mrp);
}
static int felix_mrp_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_mrp *mrp)
{
struct ocelot *ocelot = ds->priv;
return ocelot_mrp_add(ocelot, port, mrp);
}
static int
felix_mrp_add_ring_role(struct dsa_switch *ds, int port,
const struct switchdev_obj_ring_role_mrp *mrp)
{
struct ocelot *ocelot = ds->priv;
return ocelot_mrp_add_ring_role(ocelot, port, mrp);
}
static int
felix_mrp_del_ring_role(struct dsa_switch *ds, int port,
const struct switchdev_obj_ring_role_mrp *mrp)
{
struct ocelot *ocelot = ds->priv;
return ocelot_mrp_del_ring_role(ocelot, port, mrp);
}
static int felix_port_get_default_prio(struct dsa_switch *ds, int port)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_get_default_prio(ocelot, port);
}
static int felix_port_set_default_prio(struct dsa_switch *ds, int port,
u8 prio)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_set_default_prio(ocelot, port, prio);
}
static int felix_port_get_dscp_prio(struct dsa_switch *ds, int port, u8 dscp)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_get_dscp_prio(ocelot, port, dscp);
}
static int felix_port_add_dscp_prio(struct dsa_switch *ds, int port, u8 dscp,
u8 prio)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_add_dscp_prio(ocelot, port, dscp, prio);
}
static int felix_port_del_dscp_prio(struct dsa_switch *ds, int port, u8 dscp,
u8 prio)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_del_dscp_prio(ocelot, port, dscp, prio);
}
static int felix_get_mm(struct dsa_switch *ds, int port,
struct ethtool_mm_state *state)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_get_mm(ocelot, port, state);
}
static int felix_set_mm(struct dsa_switch *ds, int port,
struct ethtool_mm_cfg *cfg,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = ds->priv;
return ocelot_port_set_mm(ocelot, port, cfg, extack);
}
static void felix_get_mm_stats(struct dsa_switch *ds, int port,
struct ethtool_mm_stats *stats)
{
struct ocelot *ocelot = ds->priv;
ocelot_port_get_mm_stats(ocelot, port, stats);
}
const struct dsa_switch_ops felix_switch_ops = {
.get_tag_protocol = felix_get_tag_protocol,
.change_tag_protocol = felix_change_tag_protocol,
.connect_tag_protocol = felix_connect_tag_protocol,
.setup = felix_setup,
.teardown = felix_teardown,
.set_ageing_time = felix_set_ageing_time,
.get_mm = felix_get_mm,
.set_mm = felix_set_mm,
.get_mm_stats = felix_get_mm_stats,
.get_stats64 = felix_get_stats64,
.get_pause_stats = felix_get_pause_stats,
.get_rmon_stats = felix_get_rmon_stats,
.get_eth_ctrl_stats = felix_get_eth_ctrl_stats,
.get_eth_mac_stats = felix_get_eth_mac_stats,
.get_eth_phy_stats = felix_get_eth_phy_stats,
.get_strings = felix_get_strings,
.get_ethtool_stats = felix_get_ethtool_stats,
.get_sset_count = felix_get_sset_count,
.get_ts_info = felix_get_ts_info,
.phylink_get_caps = felix_phylink_get_caps,
.phylink_mac_select_pcs = felix_phylink_mac_select_pcs,
.phylink_mac_link_down = felix_phylink_mac_link_down,
.phylink_mac_link_up = felix_phylink_mac_link_up,
.port_enable = felix_port_enable,
.port_fast_age = felix_port_fast_age,
.port_fdb_dump = felix_fdb_dump,
.port_fdb_add = felix_fdb_add,
.port_fdb_del = felix_fdb_del,
.lag_fdb_add = felix_lag_fdb_add,
.lag_fdb_del = felix_lag_fdb_del,
.port_mdb_add = felix_mdb_add,
.port_mdb_del = felix_mdb_del,
.port_pre_bridge_flags = felix_pre_bridge_flags,
.port_bridge_flags = felix_bridge_flags,
.port_bridge_join = felix_bridge_join,
.port_bridge_leave = felix_bridge_leave,
.port_lag_join = felix_lag_join,
.port_lag_leave = felix_lag_leave,
.port_lag_change = felix_lag_change,
.port_stp_state_set = felix_bridge_stp_state_set,
.port_vlan_filtering = felix_vlan_filtering,
.port_vlan_add = felix_vlan_add,
.port_vlan_del = felix_vlan_del,
.port_hwtstamp_get = felix_hwtstamp_get,
.port_hwtstamp_set = felix_hwtstamp_set,
.port_rxtstamp = felix_rxtstamp,
.port_txtstamp = felix_txtstamp,
.port_change_mtu = felix_change_mtu,
.port_max_mtu = felix_get_max_mtu,
.port_policer_add = felix_port_policer_add,
.port_policer_del = felix_port_policer_del,
.port_mirror_add = felix_port_mirror_add,
.port_mirror_del = felix_port_mirror_del,
.cls_flower_add = felix_cls_flower_add,
.cls_flower_del = felix_cls_flower_del,
.cls_flower_stats = felix_cls_flower_stats,
.port_setup_tc = felix_port_setup_tc,
.devlink_sb_pool_get = felix_sb_pool_get,
.devlink_sb_pool_set = felix_sb_pool_set,
.devlink_sb_port_pool_get = felix_sb_port_pool_get,
.devlink_sb_port_pool_set = felix_sb_port_pool_set,
.devlink_sb_tc_pool_bind_get = felix_sb_tc_pool_bind_get,
.devlink_sb_tc_pool_bind_set = felix_sb_tc_pool_bind_set,
.devlink_sb_occ_snapshot = felix_sb_occ_snapshot,
.devlink_sb_occ_max_clear = felix_sb_occ_max_clear,
.devlink_sb_occ_port_pool_get = felix_sb_occ_port_pool_get,
.devlink_sb_occ_tc_port_bind_get= felix_sb_occ_tc_port_bind_get,
.port_mrp_add = felix_mrp_add,
.port_mrp_del = felix_mrp_del,
.port_mrp_add_ring_role = felix_mrp_add_ring_role,
.port_mrp_del_ring_role = felix_mrp_del_ring_role,
.tag_8021q_vlan_add = felix_tag_8021q_vlan_add,
.tag_8021q_vlan_del = felix_tag_8021q_vlan_del,
.port_get_default_prio = felix_port_get_default_prio,
.port_set_default_prio = felix_port_set_default_prio,
.port_get_dscp_prio = felix_port_get_dscp_prio,
.port_add_dscp_prio = felix_port_add_dscp_prio,
.port_del_dscp_prio = felix_port_del_dscp_prio,
.port_set_host_flood = felix_port_set_host_flood,
.port_change_master = felix_port_change_master,
};
EXPORT_SYMBOL_GPL(felix_switch_ops);
struct net_device *felix_port_to_netdev(struct ocelot *ocelot, int port)
{
struct felix *felix = ocelot_to_felix(ocelot);
struct dsa_switch *ds = felix->ds;
if (!dsa_is_user_port(ds, port))
return NULL;
return dsa_to_port(ds, port)->slave;
}
EXPORT_SYMBOL_GPL(felix_port_to_netdev);
int felix_netdev_to_port(struct net_device *dev)
{
struct dsa_port *dp;
dp = dsa_port_from_netdev(dev);
if (IS_ERR(dp))
return -EINVAL;
return dp->index;
}
EXPORT_SYMBOL_GPL(felix_netdev_to_port);
MODULE_DESCRIPTION("Felix DSA library");
MODULE_LICENSE("GPL");