1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */ 3 4 #include <linux/rtnetlink.h> 5 #include <net/devlink.h> 6 7 #include "nfpcore/nfp.h" 8 #include "nfpcore/nfp_nsp.h" 9 #include "nfp_app.h" 10 #include "nfp_main.h" 11 #include "nfp_port.h" 12 13 static int 14 nfp_devlink_fill_eth_port(struct nfp_port *port, 15 struct nfp_eth_table_port *copy) 16 { 17 struct nfp_eth_table_port *eth_port; 18 19 eth_port = __nfp_port_get_eth_port(port); 20 if (!eth_port) 21 return -EINVAL; 22 23 memcpy(copy, eth_port, sizeof(*eth_port)); 24 25 return 0; 26 } 27 28 static int 29 nfp_devlink_fill_eth_port_from_id(struct nfp_pf *pf, 30 struct devlink_port *dl_port, 31 struct nfp_eth_table_port *copy) 32 { 33 struct nfp_port *port = container_of(dl_port, struct nfp_port, dl_port); 34 35 return nfp_devlink_fill_eth_port(port, copy); 36 } 37 38 static int 39 nfp_devlink_set_lanes(struct nfp_pf *pf, unsigned int idx, unsigned int lanes) 40 { 41 struct nfp_nsp *nsp; 42 int ret; 43 44 nsp = nfp_eth_config_start(pf->cpp, idx); 45 if (IS_ERR(nsp)) 46 return PTR_ERR(nsp); 47 48 ret = __nfp_eth_set_split(nsp, lanes); 49 if (ret) { 50 nfp_eth_config_cleanup_end(nsp); 51 return ret; 52 } 53 54 ret = nfp_eth_config_commit_end(nsp); 55 if (ret < 0) 56 return ret; 57 if (ret) /* no change */ 58 return 0; 59 60 return nfp_net_refresh_port_table_sync(pf); 61 } 62 63 static int 64 nfp_devlink_port_split(struct devlink *devlink, struct devlink_port *port, 65 unsigned int count, struct netlink_ext_ack *extack) 66 { 67 struct nfp_pf *pf = devlink_priv(devlink); 68 struct nfp_eth_table_port eth_port; 69 unsigned int lanes; 70 int ret; 71 72 rtnl_lock(); 73 ret = nfp_devlink_fill_eth_port_from_id(pf, port, ð_port); 74 rtnl_unlock(); 75 if (ret) 76 return ret; 77 78 if (eth_port.port_lanes % count) 79 return -EINVAL; 80 81 /* Special case the 100G CXP -> 2x40G split */ 82 lanes = eth_port.port_lanes / count; 83 if (eth_port.lanes == 10 && count == 2) 84 lanes = 8 / count; 85 86 return nfp_devlink_set_lanes(pf, eth_port.index, lanes); 87 } 88 89 static int 90 nfp_devlink_port_unsplit(struct devlink *devlink, struct devlink_port *port, 91 struct netlink_ext_ack *extack) 92 { 93 struct nfp_pf *pf = devlink_priv(devlink); 94 struct nfp_eth_table_port eth_port; 95 unsigned int lanes; 96 int ret; 97 98 rtnl_lock(); 99 ret = nfp_devlink_fill_eth_port_from_id(pf, port, ð_port); 100 rtnl_unlock(); 101 if (ret) 102 return ret; 103 104 if (!eth_port.is_split) 105 return -EINVAL; 106 107 /* Special case the 100G CXP -> 2x40G unsplit */ 108 lanes = eth_port.port_lanes; 109 if (eth_port.port_lanes == 8) 110 lanes = 10; 111 112 return nfp_devlink_set_lanes(pf, eth_port.index, lanes); 113 } 114 115 static int 116 nfp_devlink_sb_pool_get(struct devlink *devlink, unsigned int sb_index, 117 u16 pool_index, struct devlink_sb_pool_info *pool_info) 118 { 119 struct nfp_pf *pf = devlink_priv(devlink); 120 121 return nfp_shared_buf_pool_get(pf, sb_index, pool_index, pool_info); 122 } 123 124 static int 125 nfp_devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index, 126 u16 pool_index, 127 u32 size, enum devlink_sb_threshold_type threshold_type, 128 struct netlink_ext_ack *extack) 129 { 130 struct nfp_pf *pf = devlink_priv(devlink); 131 132 return nfp_shared_buf_pool_set(pf, sb_index, pool_index, 133 size, threshold_type); 134 } 135 136 static int nfp_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode) 137 { 138 struct nfp_pf *pf = devlink_priv(devlink); 139 140 return nfp_app_eswitch_mode_get(pf->app, mode); 141 } 142 143 static int nfp_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode, 144 struct netlink_ext_ack *extack) 145 { 146 struct nfp_pf *pf = devlink_priv(devlink); 147 int ret; 148 149 devl_lock(devlink); 150 ret = nfp_app_eswitch_mode_set(pf->app, mode); 151 devl_unlock(devlink); 152 153 return ret; 154 } 155 156 static const struct nfp_devlink_versions_simple { 157 const char *key; 158 const char *hwinfo; 159 } nfp_devlink_versions_hwinfo[] = { 160 { DEVLINK_INFO_VERSION_GENERIC_BOARD_ID, "assembly.partno", }, 161 { DEVLINK_INFO_VERSION_GENERIC_BOARD_REV, "assembly.revision", }, 162 { DEVLINK_INFO_VERSION_GENERIC_BOARD_MANUFACTURE, "assembly.vendor", }, 163 { "board.model", /* code name */ "assembly.model", }, 164 }; 165 166 static int 167 nfp_devlink_versions_get_hwinfo(struct nfp_pf *pf, struct devlink_info_req *req) 168 { 169 unsigned int i; 170 int err; 171 172 for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_hwinfo); i++) { 173 const struct nfp_devlink_versions_simple *info; 174 const char *val; 175 176 info = &nfp_devlink_versions_hwinfo[i]; 177 178 val = nfp_hwinfo_lookup(pf->hwinfo, info->hwinfo); 179 if (!val) 180 continue; 181 182 err = devlink_info_version_fixed_put(req, info->key, val); 183 if (err) 184 return err; 185 } 186 187 return 0; 188 } 189 190 static const struct nfp_devlink_versions { 191 enum nfp_nsp_versions id; 192 const char *key; 193 } nfp_devlink_versions_nsp[] = { 194 { NFP_VERSIONS_BUNDLE, DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID, }, 195 { NFP_VERSIONS_BSP, DEVLINK_INFO_VERSION_GENERIC_FW_MGMT, }, 196 { NFP_VERSIONS_CPLD, "fw.cpld", }, 197 { NFP_VERSIONS_APP, DEVLINK_INFO_VERSION_GENERIC_FW_APP, }, 198 { NFP_VERSIONS_UNDI, DEVLINK_INFO_VERSION_GENERIC_FW_UNDI, }, 199 { NFP_VERSIONS_NCSI, DEVLINK_INFO_VERSION_GENERIC_FW_NCSI, }, 200 { NFP_VERSIONS_CFGR, "chip.init", }, 201 }; 202 203 static int 204 nfp_devlink_versions_get_nsp(struct devlink_info_req *req, bool flash, 205 const u8 *buf, unsigned int size) 206 { 207 unsigned int i; 208 int err; 209 210 for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_nsp); i++) { 211 const struct nfp_devlink_versions *info; 212 const char *version; 213 214 info = &nfp_devlink_versions_nsp[i]; 215 216 version = nfp_nsp_versions_get(info->id, flash, buf, size); 217 if (IS_ERR(version)) { 218 if (PTR_ERR(version) == -ENOENT) 219 continue; 220 else 221 return PTR_ERR(version); 222 } 223 224 if (flash) 225 err = devlink_info_version_stored_put(req, info->key, 226 version); 227 else 228 err = devlink_info_version_running_put(req, info->key, 229 version); 230 if (err) 231 return err; 232 } 233 234 return 0; 235 } 236 237 static int 238 nfp_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req, 239 struct netlink_ext_ack *extack) 240 { 241 struct nfp_pf *pf = devlink_priv(devlink); 242 const char *sn, *vendor, *part; 243 struct nfp_nsp *nsp; 244 char *buf = NULL; 245 int err; 246 247 err = devlink_info_driver_name_put(req, "nfp"); 248 if (err) 249 return err; 250 251 vendor = nfp_hwinfo_lookup(pf->hwinfo, "assembly.vendor"); 252 part = nfp_hwinfo_lookup(pf->hwinfo, "assembly.partno"); 253 sn = nfp_hwinfo_lookup(pf->hwinfo, "assembly.serial"); 254 if (vendor && part && sn) { 255 char *buf; 256 257 buf = kmalloc(strlen(vendor) + strlen(part) + strlen(sn) + 1, 258 GFP_KERNEL); 259 if (!buf) 260 return -ENOMEM; 261 262 buf[0] = '\0'; 263 strcat(buf, vendor); 264 strcat(buf, part); 265 strcat(buf, sn); 266 267 err = devlink_info_serial_number_put(req, buf); 268 kfree(buf); 269 if (err) 270 return err; 271 } 272 273 nsp = nfp_nsp_open(pf->cpp); 274 if (IS_ERR(nsp)) { 275 NL_SET_ERR_MSG_MOD(extack, "can't access NSP"); 276 return PTR_ERR(nsp); 277 } 278 279 if (nfp_nsp_has_versions(nsp)) { 280 buf = kzalloc(NFP_NSP_VERSION_BUFSZ, GFP_KERNEL); 281 if (!buf) { 282 err = -ENOMEM; 283 goto err_close_nsp; 284 } 285 286 err = nfp_nsp_versions(nsp, buf, NFP_NSP_VERSION_BUFSZ); 287 if (err) 288 goto err_free_buf; 289 290 err = nfp_devlink_versions_get_nsp(req, false, 291 buf, NFP_NSP_VERSION_BUFSZ); 292 if (err) 293 goto err_free_buf; 294 295 err = nfp_devlink_versions_get_nsp(req, true, 296 buf, NFP_NSP_VERSION_BUFSZ); 297 if (err) 298 goto err_free_buf; 299 300 kfree(buf); 301 } 302 303 nfp_nsp_close(nsp); 304 305 return nfp_devlink_versions_get_hwinfo(pf, req); 306 307 err_free_buf: 308 kfree(buf); 309 err_close_nsp: 310 nfp_nsp_close(nsp); 311 return err; 312 } 313 314 static int 315 nfp_devlink_flash_update(struct devlink *devlink, 316 struct devlink_flash_update_params *params, 317 struct netlink_ext_ack *extack) 318 { 319 return nfp_flash_update_common(devlink_priv(devlink), params->fw, extack); 320 } 321 322 const struct devlink_ops nfp_devlink_ops = { 323 .port_split = nfp_devlink_port_split, 324 .port_unsplit = nfp_devlink_port_unsplit, 325 .sb_pool_get = nfp_devlink_sb_pool_get, 326 .sb_pool_set = nfp_devlink_sb_pool_set, 327 .eswitch_mode_get = nfp_devlink_eswitch_mode_get, 328 .eswitch_mode_set = nfp_devlink_eswitch_mode_set, 329 .info_get = nfp_devlink_info_get, 330 .flash_update = nfp_devlink_flash_update, 331 }; 332 333 int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port) 334 { 335 struct devlink_port_attrs attrs = {}; 336 struct nfp_eth_table_port eth_port; 337 struct devlink *devlink; 338 const u8 *serial; 339 int serial_len; 340 int ret; 341 342 rtnl_lock(); 343 ret = nfp_devlink_fill_eth_port(port, ð_port); 344 rtnl_unlock(); 345 if (ret) 346 return ret; 347 348 attrs.split = eth_port.is_split; 349 attrs.splittable = !attrs.split; 350 attrs.lanes = eth_port.port_lanes; 351 attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL; 352 attrs.phys.port_number = eth_port.label_port; 353 attrs.phys.split_subport_number = eth_port.label_subport; 354 serial_len = nfp_cpp_serial(port->app->cpp, &serial); 355 memcpy(attrs.switch_id.id, serial, serial_len); 356 attrs.switch_id.id_len = serial_len; 357 devlink_port_attrs_set(&port->dl_port, &attrs); 358 359 devlink = priv_to_devlink(app->pf); 360 361 return devl_port_register(devlink, &port->dl_port, port->eth_id); 362 } 363 364 void nfp_devlink_port_unregister(struct nfp_port *port) 365 { 366 devl_port_unregister(&port->dl_port); 367 } 368 369 void nfp_devlink_port_type_eth_set(struct nfp_port *port) 370 { 371 devlink_port_type_eth_set(&port->dl_port, port->netdev); 372 } 373 374 void nfp_devlink_port_type_clear(struct nfp_port *port) 375 { 376 devlink_port_type_clear(&port->dl_port); 377 } 378 379 struct devlink_port *nfp_devlink_get_devlink_port(struct net_device *netdev) 380 { 381 struct nfp_port *port; 382 383 port = nfp_port_from_netdev(netdev); 384 if (!port) 385 return NULL; 386 387 return &port->dl_port; 388 } 389