// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
#include <linux/rtnetlink.h>
#include <net/devlink.h>
#include "nfpcore/nfp.h"
#include "nfpcore/nfp_nsp.h"
#include "nfp_app.h"
#include "nfp_main.h"
#include "nfp_port.h"
static int
nfp_devlink_fill_eth_port(struct nfp_port *port,
struct nfp_eth_table_port *copy)
{
struct nfp_eth_table_port *eth_port;
eth_port = __nfp_port_get_eth_port(port);
if (!eth_port)
return -EINVAL;
memcpy(copy, eth_port, sizeof(*eth_port));
return 0;
}
static int
nfp_devlink_fill_eth_port_from_id(struct nfp_pf *pf,
struct devlink_port *dl_port,
struct nfp_eth_table_port *copy)
{
struct nfp_port *port = container_of(dl_port, struct nfp_port, dl_port);
return nfp_devlink_fill_eth_port(port, copy);
}
static int
nfp_devlink_set_lanes(struct nfp_pf *pf, unsigned int idx, unsigned int lanes)
{
struct nfp_nsp *nsp;
int ret;
nsp = nfp_eth_config_start(pf->cpp, idx);
if (IS_ERR(nsp))
return PTR_ERR(nsp);
ret = __nfp_eth_set_split(nsp, lanes);
if (ret) {
nfp_eth_config_cleanup_end(nsp);
return ret;
}
ret = nfp_eth_config_commit_end(nsp);
if (ret < 0)
return ret;
if (ret) /* no change */
return 0;
return nfp_net_refresh_port_table_sync(pf);
}
static int
nfp_devlink_port_split(struct devlink *devlink, struct devlink_port *port,
unsigned int count, struct netlink_ext_ack *extack)
{
struct nfp_pf *pf = devlink_priv(devlink);
struct nfp_eth_table_port eth_port;
unsigned int lanes;
int ret;
rtnl_lock();
ret = nfp_devlink_fill_eth_port_from_id(pf, port, ð_port);
rtnl_unlock();
if (ret)
return ret;
if (eth_port.port_lanes % count) {
NL_SET_ERR_MSG_MOD(extack, "invalid count");
return -EINVAL;
}
/* Special case the 100G CXP -> 2x40G split */
lanes = eth_port.port_lanes / count;
if (eth_port.lanes == 10 && count == 2)
lanes = 8 / count;
return nfp_devlink_set_lanes(pf, eth_port.index, lanes);
}
static int
nfp_devlink_port_unsplit(struct devlink *devlink, struct devlink_port *port,
struct netlink_ext_ack *extack)
{
struct nfp_pf *pf = devlink_priv(devlink);
struct nfp_eth_table_port eth_port;
unsigned int lanes;
int ret;
rtnl_lock();
ret = nfp_devlink_fill_eth_port_from_id(pf, port, ð_port);
rtnl_unlock();
if (ret)
return ret;
if (!eth_port.is_split) {
NL_SET_ERR_MSG_MOD(extack, "port is not split");
return -EINVAL;
}
/* Special case the 100G CXP -> 2x40G unsplit */
lanes = eth_port.port_lanes;
if (eth_port.port_lanes == 8)
lanes = 10;
return nfp_devlink_set_lanes(pf, eth_port.index, lanes);
}
static int
nfp_devlink_sb_pool_get(struct devlink *devlink, unsigned int sb_index,
u16 pool_index, struct devlink_sb_pool_info *pool_info)
{
struct nfp_pf *pf = devlink_priv(devlink);
return nfp_shared_buf_pool_get(pf, sb_index, pool_index, pool_info);
}
static int
nfp_devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
u16 pool_index,
u32 size, enum devlink_sb_threshold_type threshold_type,
struct netlink_ext_ack *extack)
{
struct nfp_pf *pf = devlink_priv(devlink);
return nfp_shared_buf_pool_set(pf, sb_index, pool_index,
size, threshold_type);
}
static int nfp_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
{
struct nfp_pf *pf = devlink_priv(devlink);
return nfp_app_eswitch_mode_get(pf->app, mode);
}
static int nfp_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
struct netlink_ext_ack *extack)
{
struct nfp_pf *pf = devlink_priv(devlink);
return nfp_app_eswitch_mode_set(pf->app, mode);
}
static const struct nfp_devlink_versions_simple {
const char *key;
const char *hwinfo;
} nfp_devlink_versions_hwinfo[] = {
{ DEVLINK_INFO_VERSION_GENERIC_BOARD_ID, "assembly.partno", },
{ DEVLINK_INFO_VERSION_GENERIC_BOARD_REV, "assembly.revision", },
{ DEVLINK_INFO_VERSION_GENERIC_BOARD_MANUFACTURE, "assembly.vendor", },
{ "board.model", /* code name */ "assembly.model", },
{ DEVLINK_INFO_VERSION_GENERIC_BOARD_PART_NUMBER, "pn", },
};
static int
nfp_devlink_versions_get_hwinfo(struct nfp_pf *pf, struct devlink_info_req *req)
{
unsigned int i;
int err;
for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_hwinfo); i++) {
const struct nfp_devlink_versions_simple *info;
const char *val;
info = &nfp_devlink_versions_hwinfo[i];
val = nfp_hwinfo_lookup(pf->hwinfo, info->hwinfo);
if (!val)
continue;
err = devlink_info_version_fixed_put(req, info->key, val);
if (err)
return err;
}
return 0;
}
static const struct nfp_devlink_versions {
enum nfp_nsp_versions id;
const char *key;
} nfp_devlink_versions_nsp[] = {
{ NFP_VERSIONS_BUNDLE, DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID, },
{ NFP_VERSIONS_BSP, DEVLINK_INFO_VERSION_GENERIC_FW_MGMT, },
{ NFP_VERSIONS_CPLD, "fw.cpld", },
{ NFP_VERSIONS_APP, DEVLINK_INFO_VERSION_GENERIC_FW_APP, },
{ NFP_VERSIONS_UNDI, DEVLINK_INFO_VERSION_GENERIC_FW_UNDI, },
{ NFP_VERSIONS_NCSI, DEVLINK_INFO_VERSION_GENERIC_FW_NCSI, },
{ NFP_VERSIONS_CFGR, "chip.init", },
};
static int
nfp_devlink_versions_get_nsp(struct devlink_info_req *req, bool flash,
const u8 *buf, unsigned int size)
{
unsigned int i;
int err;
for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_nsp); i++) {
const struct nfp_devlink_versions *info;
const char *version;
info = &nfp_devlink_versions_nsp[i];
version = nfp_nsp_versions_get(info->id, flash, buf, size);
if (IS_ERR(version)) {
if (PTR_ERR(version) == -ENOENT)
continue;
else
return PTR_ERR(version);
}
if (flash)
err = devlink_info_version_stored_put(req, info->key,
version);
else
err = devlink_info_version_running_put(req, info->key,
version);
if (err)
return err;
}
return 0;
}
static int
nfp_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
struct netlink_ext_ack *extack)
{
struct nfp_pf *pf = devlink_priv(devlink);
const char *sn, *vendor, *part;
struct nfp_nsp *nsp;
char *buf = NULL;
int err;
vendor = nfp_hwinfo_lookup(pf->hwinfo, "assembly.vendor");
part = nfp_hwinfo_lookup(pf->hwinfo, "assembly.partno");
sn = nfp_hwinfo_lookup(pf->hwinfo, "assembly.serial");
if (vendor && part && sn) {
char *buf;
buf = kmalloc(strlen(vendor) + strlen(part) + strlen(sn) + 1,
GFP_KERNEL);
if (!buf)
return -ENOMEM;
buf[0] = '\0';
strcat(buf, vendor);
strcat(buf, part);
strcat(buf, sn);
err = devlink_info_serial_number_put(req, buf);
kfree(buf);
if (err)
return err;
}
nsp = nfp_nsp_open(pf->cpp);
if (IS_ERR(nsp)) {
NL_SET_ERR_MSG_MOD(extack, "can't access NSP");
return PTR_ERR(nsp);
}
if (nfp_nsp_has_versions(nsp)) {
buf = kzalloc(NFP_NSP_VERSION_BUFSZ, GFP_KERNEL);
if (!buf) {
err = -ENOMEM;
goto err_close_nsp;
}
err = nfp_nsp_versions(nsp, buf, NFP_NSP_VERSION_BUFSZ);
if (err)
goto err_free_buf;
err = nfp_devlink_versions_get_nsp(req, false,
buf, NFP_NSP_VERSION_BUFSZ);
if (err)
goto err_free_buf;
err = nfp_devlink_versions_get_nsp(req, true,
buf, NFP_NSP_VERSION_BUFSZ);
if (err)
goto err_free_buf;
kfree(buf);
}
nfp_nsp_close(nsp);
return nfp_devlink_versions_get_hwinfo(pf, req);
err_free_buf:
kfree(buf);
err_close_nsp:
nfp_nsp_close(nsp);
return err;
}
static int
nfp_devlink_flash_update(struct devlink *devlink,
struct devlink_flash_update_params *params,
struct netlink_ext_ack *extack)
{
return nfp_flash_update_common(devlink_priv(devlink), params->fw, extack);
}
const struct devlink_ops nfp_devlink_ops = {
.sb_pool_get = nfp_devlink_sb_pool_get,
.sb_pool_set = nfp_devlink_sb_pool_set,
.eswitch_mode_get = nfp_devlink_eswitch_mode_get,
.eswitch_mode_set = nfp_devlink_eswitch_mode_set,
.info_get = nfp_devlink_info_get,
.flash_update = nfp_devlink_flash_update,
};
static const struct devlink_port_ops nfp_devlink_port_ops = {
.port_split = nfp_devlink_port_split,
.port_unsplit = nfp_devlink_port_unsplit,
};
int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port)
{
struct devlink_port_attrs attrs = {};
struct nfp_eth_table_port eth_port;
struct devlink *devlink;
const u8 *serial;
int serial_len;
int ret;
SET_NETDEV_DEVLINK_PORT(port->netdev, &port->dl_port);
rtnl_lock();
ret = nfp_devlink_fill_eth_port(port, ð_port);
rtnl_unlock();
if (ret)
return ret;
attrs.split = eth_port.is_split;
attrs.splittable = eth_port.port_lanes > 1 && !attrs.split;
attrs.lanes = eth_port.port_lanes;
attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
attrs.phys.port_number = eth_port.label_port;
attrs.phys.split_subport_number = eth_port.label_subport;
serial_len = nfp_cpp_serial(port->app->cpp, &serial);
memcpy(attrs.switch_id.id, serial, serial_len);
attrs.switch_id.id_len = serial_len;
devlink_port_attrs_set(&port->dl_port, &attrs);
devlink = priv_to_devlink(app->pf);
return devl_port_register_with_ops(devlink, &port->dl_port,
port->eth_id, &nfp_devlink_port_ops);
}
void nfp_devlink_port_unregister(struct nfp_port *port)
{
devl_port_unregister(&port->dl_port);
}
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