Commit 17705434 authored by David S. Miller's avatar David S. Miller

Merge branch 'Devlink-regions-for-SJA1105-DSA-driver'

Vladimir Oltean says:

====================
Devlink regions for SJA1105 DSA driver

This series exposes the SJA1105 static config as a devlink region. This
can be used for debugging, for example with the sja1105_dump user space
program that I have derived from Andrew Lunn's mv88e6xxx_dump:

https://github.com/vladimiroltean/mv88e6xxx_dump/tree/sja1105

Changes in v2:
- Tear down devlink params on initialization failure.
- Add driver identification through devlink.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents e666a4c6 ff4cf8ea
......@@ -6,6 +6,7 @@ sja1105-objs := \
sja1105_main.o \
sja1105_flower.o \
sja1105_ethtool.o \
sja1105_devlink.o \
sja1105_clocking.o \
sja1105_static_config.o \
sja1105_dynamic_config.o \
......
......@@ -218,6 +218,7 @@ struct sja1105_private {
struct mutex mgmt_lock;
struct dsa_8021q_context *dsa_8021q_ctx;
enum sja1105_vlan_state vlan_state;
struct devlink_region **regions;
struct sja1105_cbs_entry *cbs;
struct sja1105_tagger_data tagger_data;
struct sja1105_ptp_data ptp_data;
......@@ -244,9 +245,20 @@ enum sja1105_reset_reason {
int sja1105_static_config_reload(struct sja1105_private *priv,
enum sja1105_reset_reason reason);
int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled);
void sja1105_frame_memory_partitioning(struct sja1105_private *priv);
/* From sja1105_devlink.c */
int sja1105_devlink_setup(struct dsa_switch *ds);
void sja1105_devlink_teardown(struct dsa_switch *ds);
int sja1105_devlink_param_get(struct dsa_switch *ds, u32 id,
struct devlink_param_gset_ctx *ctx);
int sja1105_devlink_param_set(struct dsa_switch *ds, u32 id,
struct devlink_param_gset_ctx *ctx);
int sja1105_devlink_info_get(struct dsa_switch *ds,
struct devlink_info_req *req,
struct netlink_ext_ack *extack);
/* From sja1105_spi.c */
int sja1105_xfer_buf(const struct sja1105_private *priv,
sja1105_spi_rw_mode_t rw, u64 reg_addr,
......@@ -257,6 +269,8 @@ int sja1105_xfer_u32(const struct sja1105_private *priv,
int sja1105_xfer_u64(const struct sja1105_private *priv,
sja1105_spi_rw_mode_t rw, u64 reg_addr, u64 *value,
struct ptp_system_timestamp *ptp_sts);
int static_config_buf_prepare_for_upload(struct sja1105_private *priv,
void *config_buf, int buf_len);
int sja1105_static_config_upload(struct sja1105_private *priv);
int sja1105_inhibit_tx(const struct sja1105_private *priv,
unsigned long port_bitmap, bool tx_inhibited);
......
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018-2019, Vladimir Oltean <olteanv@gmail.com>
* Copyright 2020 NXP Semiconductors
*/
#include "sja1105.h"
/* Since devlink regions have a fixed size and the static config has a variable
* size, we need to calculate the maximum possible static config size by
* creating a dummy config with all table entries populated to the max, and get
* its packed length. This is done dynamically as opposed to simply hardcoding
* a number, since currently not all static config tables are implemented, so
* we are avoiding a possible code desynchronization.
*/
static size_t sja1105_static_config_get_max_size(struct sja1105_private *priv)
{
struct sja1105_static_config config;
enum sja1105_blk_idx blk_idx;
int rc;
rc = sja1105_static_config_init(&config,
priv->info->static_ops,
priv->info->device_id);
if (rc)
return 0;
for (blk_idx = 0; blk_idx < BLK_IDX_MAX; blk_idx++) {
struct sja1105_table *table = &config.tables[blk_idx];
table->entry_count = table->ops->max_entry_count;
}
return sja1105_static_config_get_length(&config);
}
static int
sja1105_region_static_config_snapshot(struct devlink *dl,
const struct devlink_region_ops *ops,
struct netlink_ext_ack *extack,
u8 **data)
{
struct dsa_switch *ds = dsa_devlink_to_ds(dl);
struct sja1105_private *priv = ds->priv;
size_t max_len, len;
len = sja1105_static_config_get_length(&priv->static_config);
max_len = sja1105_static_config_get_max_size(priv);
*data = kcalloc(max_len, sizeof(u8), GFP_KERNEL);
if (!*data)
return -ENOMEM;
return static_config_buf_prepare_for_upload(priv, *data, len);
}
static struct devlink_region_ops sja1105_region_static_config_ops = {
.name = "static-config",
.snapshot = sja1105_region_static_config_snapshot,
.destructor = kfree,
};
enum sja1105_region_id {
SJA1105_REGION_STATIC_CONFIG = 0,
};
struct sja1105_region {
const struct devlink_region_ops *ops;
size_t (*get_size)(struct sja1105_private *priv);
};
static struct sja1105_region sja1105_regions[] = {
[SJA1105_REGION_STATIC_CONFIG] = {
.ops = &sja1105_region_static_config_ops,
.get_size = sja1105_static_config_get_max_size,
},
};
static int sja1105_setup_devlink_regions(struct dsa_switch *ds)
{
int i, num_regions = ARRAY_SIZE(sja1105_regions);
struct sja1105_private *priv = ds->priv;
const struct devlink_region_ops *ops;
struct devlink_region *region;
u64 size;
priv->regions = kcalloc(num_regions, sizeof(struct devlink_region *),
GFP_KERNEL);
if (!priv->regions)
return -ENOMEM;
for (i = 0; i < num_regions; i++) {
size = sja1105_regions[i].get_size(priv);
ops = sja1105_regions[i].ops;
region = dsa_devlink_region_create(ds, ops, 1, size);
if (IS_ERR(region)) {
while (i-- >= 0)
dsa_devlink_region_destroy(priv->regions[i]);
return PTR_ERR(region);
}
priv->regions[i] = region;
}
return 0;
}
static void sja1105_teardown_devlink_regions(struct dsa_switch *ds)
{
int i, num_regions = ARRAY_SIZE(sja1105_regions);
struct sja1105_private *priv = ds->priv;
for (i = 0; i < num_regions; i++)
dsa_devlink_region_destroy(priv->regions[i]);
kfree(priv->regions);
}
static int sja1105_best_effort_vlan_filtering_get(struct sja1105_private *priv,
bool *be_vlan)
{
*be_vlan = priv->best_effort_vlan_filtering;
return 0;
}
static int sja1105_best_effort_vlan_filtering_set(struct sja1105_private *priv,
bool be_vlan)
{
struct dsa_switch *ds = priv->ds;
bool vlan_filtering;
int port;
int rc;
priv->best_effort_vlan_filtering = be_vlan;
rtnl_lock();
for (port = 0; port < ds->num_ports; port++) {
struct dsa_port *dp;
if (!dsa_is_user_port(ds, port))
continue;
dp = dsa_to_port(ds, port);
vlan_filtering = dsa_port_is_vlan_filtering(dp);
rc = sja1105_vlan_filtering(ds, port, vlan_filtering);
if (rc)
break;
}
rtnl_unlock();
return rc;
}
enum sja1105_devlink_param_id {
SJA1105_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
SJA1105_DEVLINK_PARAM_ID_BEST_EFFORT_VLAN_FILTERING,
};
int sja1105_devlink_param_get(struct dsa_switch *ds, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct sja1105_private *priv = ds->priv;
int err;
switch (id) {
case SJA1105_DEVLINK_PARAM_ID_BEST_EFFORT_VLAN_FILTERING:
err = sja1105_best_effort_vlan_filtering_get(priv,
&ctx->val.vbool);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
int sja1105_devlink_param_set(struct dsa_switch *ds, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct sja1105_private *priv = ds->priv;
int err;
switch (id) {
case SJA1105_DEVLINK_PARAM_ID_BEST_EFFORT_VLAN_FILTERING:
err = sja1105_best_effort_vlan_filtering_set(priv,
ctx->val.vbool);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static const struct devlink_param sja1105_devlink_params[] = {
DSA_DEVLINK_PARAM_DRIVER(SJA1105_DEVLINK_PARAM_ID_BEST_EFFORT_VLAN_FILTERING,
"best_effort_vlan_filtering",
DEVLINK_PARAM_TYPE_BOOL,
BIT(DEVLINK_PARAM_CMODE_RUNTIME)),
};
static int sja1105_setup_devlink_params(struct dsa_switch *ds)
{
return dsa_devlink_params_register(ds, sja1105_devlink_params,
ARRAY_SIZE(sja1105_devlink_params));
}
static void sja1105_teardown_devlink_params(struct dsa_switch *ds)
{
dsa_devlink_params_unregister(ds, sja1105_devlink_params,
ARRAY_SIZE(sja1105_devlink_params));
}
int sja1105_devlink_info_get(struct dsa_switch *ds,
struct devlink_info_req *req,
struct netlink_ext_ack *extack)
{
struct sja1105_private *priv = ds->priv;
int rc;
rc = devlink_info_driver_name_put(req, "sja1105");
if (rc)
return rc;
rc = devlink_info_version_fixed_put(req,
DEVLINK_INFO_VERSION_GENERIC_ASIC_ID,
priv->info->name);
return rc;
}
int sja1105_devlink_setup(struct dsa_switch *ds)
{
int rc;
rc = sja1105_setup_devlink_params(ds);
if (rc)
return rc;
rc = sja1105_setup_devlink_regions(ds);
if (rc < 0) {
sja1105_teardown_devlink_params(ds);
return rc;
}
return 0;
}
void sja1105_devlink_teardown(struct dsa_switch *ds)
{
sja1105_teardown_devlink_params(ds);
sja1105_teardown_devlink_regions(ds);
}
......@@ -2634,7 +2634,7 @@ static int sja1105_vlan_prepare(struct dsa_switch *ds, int port,
* which can only be partially reconfigured at runtime (and not the TPID).
* So a switch reset is required.
*/
static int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled)
int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled)
{
struct sja1105_l2_lookup_params_entry *l2_lookup_params;
struct sja1105_general_params_entry *general_params;
......@@ -2864,105 +2864,6 @@ static const struct dsa_8021q_ops sja1105_dsa_8021q_ops = {
.vlan_del = sja1105_dsa_8021q_vlan_del,
};
static int sja1105_best_effort_vlan_filtering_get(struct sja1105_private *priv,
bool *be_vlan)
{
*be_vlan = priv->best_effort_vlan_filtering;
return 0;
}
static int sja1105_best_effort_vlan_filtering_set(struct sja1105_private *priv,
bool be_vlan)
{
struct dsa_switch *ds = priv->ds;
bool vlan_filtering;
int port;
int rc;
priv->best_effort_vlan_filtering = be_vlan;
rtnl_lock();
for (port = 0; port < ds->num_ports; port++) {
struct dsa_port *dp;
if (!dsa_is_user_port(ds, port))
continue;
dp = dsa_to_port(ds, port);
vlan_filtering = dsa_port_is_vlan_filtering(dp);
rc = sja1105_vlan_filtering(ds, port, vlan_filtering);
if (rc)
break;
}
rtnl_unlock();
return rc;
}
enum sja1105_devlink_param_id {
SJA1105_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
SJA1105_DEVLINK_PARAM_ID_BEST_EFFORT_VLAN_FILTERING,
};
static int sja1105_devlink_param_get(struct dsa_switch *ds, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct sja1105_private *priv = ds->priv;
int err;
switch (id) {
case SJA1105_DEVLINK_PARAM_ID_BEST_EFFORT_VLAN_FILTERING:
err = sja1105_best_effort_vlan_filtering_get(priv,
&ctx->val.vbool);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static int sja1105_devlink_param_set(struct dsa_switch *ds, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct sja1105_private *priv = ds->priv;
int err;
switch (id) {
case SJA1105_DEVLINK_PARAM_ID_BEST_EFFORT_VLAN_FILTERING:
err = sja1105_best_effort_vlan_filtering_set(priv,
ctx->val.vbool);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static const struct devlink_param sja1105_devlink_params[] = {
DSA_DEVLINK_PARAM_DRIVER(SJA1105_DEVLINK_PARAM_ID_BEST_EFFORT_VLAN_FILTERING,
"best_effort_vlan_filtering",
DEVLINK_PARAM_TYPE_BOOL,
BIT(DEVLINK_PARAM_CMODE_RUNTIME)),
};
static int sja1105_setup_devlink_params(struct dsa_switch *ds)
{
return dsa_devlink_params_register(ds, sja1105_devlink_params,
ARRAY_SIZE(sja1105_devlink_params));
}
static void sja1105_teardown_devlink_params(struct dsa_switch *ds)
{
dsa_devlink_params_unregister(ds, sja1105_devlink_params,
ARRAY_SIZE(sja1105_devlink_params));
}
/* The programming model for the SJA1105 switch is "all-at-once" via static
* configuration tables. Some of these can be dynamically modified at runtime,
* but not the xMII mode parameters table.
......@@ -3030,7 +2931,7 @@ static int sja1105_setup(struct dsa_switch *ds)
ds->configure_vlan_while_not_filtering = true;
rc = sja1105_setup_devlink_params(ds);
rc = sja1105_devlink_setup(ds);
if (rc < 0)
return rc;
......@@ -3061,7 +2962,7 @@ static void sja1105_teardown(struct dsa_switch *ds)
kthread_destroy_worker(sp->xmit_worker);
}
sja1105_teardown_devlink_params(ds);
sja1105_devlink_teardown(ds);
sja1105_flower_teardown(ds);
sja1105_tas_teardown(ds);
sja1105_ptp_clock_unregister(ds);
......@@ -3415,6 +3316,7 @@ static const struct dsa_switch_ops sja1105_switch_ops = {
.crosschip_bridge_leave = sja1105_crosschip_bridge_leave,
.devlink_param_get = sja1105_devlink_param_get,
.devlink_param_set = sja1105_devlink_param_set,
.devlink_info_get = sja1105_devlink_info_get,
};
static const struct of_device_id sja1105_dt_ids[];
......
......@@ -302,9 +302,8 @@ static int sja1105_status_get(struct sja1105_private *priv,
* for upload requires the recalculation of table CRCs and updating the
* structures with these.
*/
static int
static_config_buf_prepare_for_upload(struct sja1105_private *priv,
void *config_buf, int buf_len)
int static_config_buf_prepare_for_upload(struct sja1105_private *priv,
void *config_buf, int buf_len)
{
struct sja1105_static_config *config = &priv->static_config;
struct sja1105_table_header final_header;
......
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