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, unsigned int port_index, 30 struct nfp_eth_table_port *copy) 31 { 32 struct nfp_port *port; 33 34 port = nfp_port_from_id(pf, NFP_PORT_PHYS_PORT, port_index); 35 36 return nfp_devlink_fill_eth_port(port, copy); 37 } 38 39 static int 40 nfp_devlink_set_lanes(struct nfp_pf *pf, unsigned int idx, unsigned int lanes) 41 { 42 struct nfp_nsp *nsp; 43 int ret; 44 45 nsp = nfp_eth_config_start(pf->cpp, idx); 46 if (IS_ERR(nsp)) 47 return PTR_ERR(nsp); 48 49 ret = __nfp_eth_set_split(nsp, lanes); 50 if (ret) { 51 nfp_eth_config_cleanup_end(nsp); 52 return ret; 53 } 54 55 ret = nfp_eth_config_commit_end(nsp); 56 if (ret < 0) 57 return ret; 58 if (ret) /* no change */ 59 return 0; 60 61 return nfp_net_refresh_port_table_sync(pf); 62 } 63 64 static int 65 nfp_devlink_port_split(struct devlink *devlink, unsigned int port_index, 66 unsigned int count, struct netlink_ext_ack *extack) 67 { 68 struct nfp_pf *pf = devlink_priv(devlink); 69 struct nfp_eth_table_port eth_port; 70 unsigned int lanes; 71 int ret; 72 73 if (count < 2) 74 return -EINVAL; 75 76 mutex_lock(&pf->lock); 77 78 rtnl_lock(); 79 ret = nfp_devlink_fill_eth_port_from_id(pf, port_index, ð_port); 80 rtnl_unlock(); 81 if (ret) 82 goto out; 83 84 if (eth_port.is_split || eth_port.port_lanes % count) { 85 ret = -EINVAL; 86 goto out; 87 } 88 89 /* Special case the 100G CXP -> 2x40G split */ 90 lanes = eth_port.port_lanes / count; 91 if (eth_port.lanes == 10 && count == 2) 92 lanes = 8 / count; 93 94 ret = nfp_devlink_set_lanes(pf, eth_port.index, lanes); 95 out: 96 mutex_unlock(&pf->lock); 97 98 return ret; 99 } 100 101 static int 102 nfp_devlink_port_unsplit(struct devlink *devlink, unsigned int port_index, 103 struct netlink_ext_ack *extack) 104 { 105 struct nfp_pf *pf = devlink_priv(devlink); 106 struct nfp_eth_table_port eth_port; 107 unsigned int lanes; 108 int ret; 109 110 mutex_lock(&pf->lock); 111 112 rtnl_lock(); 113 ret = nfp_devlink_fill_eth_port_from_id(pf, port_index, ð_port); 114 rtnl_unlock(); 115 if (ret) 116 goto out; 117 118 if (!eth_port.is_split) { 119 ret = -EINVAL; 120 goto out; 121 } 122 123 /* Special case the 100G CXP -> 2x40G unsplit */ 124 lanes = eth_port.port_lanes; 125 if (eth_port.port_lanes == 8) 126 lanes = 10; 127 128 ret = nfp_devlink_set_lanes(pf, eth_port.index, lanes); 129 out: 130 mutex_unlock(&pf->lock); 131 132 return ret; 133 } 134 135 static int 136 nfp_devlink_sb_pool_get(struct devlink *devlink, unsigned int sb_index, 137 u16 pool_index, struct devlink_sb_pool_info *pool_info) 138 { 139 struct nfp_pf *pf = devlink_priv(devlink); 140 141 return nfp_shared_buf_pool_get(pf, sb_index, pool_index, pool_info); 142 } 143 144 static int 145 nfp_devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index, 146 u16 pool_index, 147 u32 size, enum devlink_sb_threshold_type threshold_type) 148 { 149 struct nfp_pf *pf = devlink_priv(devlink); 150 151 return nfp_shared_buf_pool_set(pf, sb_index, pool_index, 152 size, threshold_type); 153 } 154 155 static int nfp_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode) 156 { 157 struct nfp_pf *pf = devlink_priv(devlink); 158 159 return nfp_app_eswitch_mode_get(pf->app, mode); 160 } 161 162 static int nfp_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode, 163 struct netlink_ext_ack *extack) 164 { 165 struct nfp_pf *pf = devlink_priv(devlink); 166 int ret; 167 168 mutex_lock(&pf->lock); 169 ret = nfp_app_eswitch_mode_set(pf->app, mode); 170 mutex_unlock(&pf->lock); 171 172 return ret; 173 } 174 175 static const struct nfp_devlink_versions_simple { 176 const char *key; 177 const char *hwinfo; 178 } nfp_devlink_versions_hwinfo[] = { 179 { DEVLINK_INFO_VERSION_GENERIC_BOARD_ID, "assembly.partno", }, 180 { DEVLINK_INFO_VERSION_GENERIC_BOARD_REV, "assembly.revision", }, 181 { DEVLINK_INFO_VERSION_GENERIC_BOARD_MANUFACTURE, "assembly.vendor", }, 182 { "board.model", /* code name */ "assembly.model", }, 183 }; 184 185 static int 186 nfp_devlink_versions_get_hwinfo(struct nfp_pf *pf, struct devlink_info_req *req) 187 { 188 unsigned int i; 189 int err; 190 191 for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_hwinfo); i++) { 192 const struct nfp_devlink_versions_simple *info; 193 const char *val; 194 195 info = &nfp_devlink_versions_hwinfo[i]; 196 197 val = nfp_hwinfo_lookup(pf->hwinfo, info->hwinfo); 198 if (!val) 199 continue; 200 201 err = devlink_info_version_fixed_put(req, info->key, val); 202 if (err) 203 return err; 204 } 205 206 return 0; 207 } 208 209 static const struct nfp_devlink_versions { 210 enum nfp_nsp_versions id; 211 const char *key; 212 } nfp_devlink_versions_nsp[] = { 213 { NFP_VERSIONS_BUNDLE, "fw.bundle_id", }, 214 { NFP_VERSIONS_BSP, DEVLINK_INFO_VERSION_GENERIC_FW_MGMT, }, 215 { NFP_VERSIONS_CPLD, "fw.cpld", }, 216 { NFP_VERSIONS_APP, DEVLINK_INFO_VERSION_GENERIC_FW_APP, }, 217 { NFP_VERSIONS_UNDI, DEVLINK_INFO_VERSION_GENERIC_FW_UNDI, }, 218 { NFP_VERSIONS_NCSI, DEVLINK_INFO_VERSION_GENERIC_FW_NCSI, }, 219 { NFP_VERSIONS_CFGR, "chip.init", }, 220 }; 221 222 static int 223 nfp_devlink_versions_get_nsp(struct devlink_info_req *req, bool flash, 224 const u8 *buf, unsigned int size) 225 { 226 unsigned int i; 227 int err; 228 229 for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_nsp); i++) { 230 const struct nfp_devlink_versions *info; 231 const char *version; 232 233 info = &nfp_devlink_versions_nsp[i]; 234 235 version = nfp_nsp_versions_get(info->id, flash, buf, size); 236 if (IS_ERR(version)) { 237 if (PTR_ERR(version) == -ENOENT) 238 continue; 239 else 240 return PTR_ERR(version); 241 } 242 243 if (flash) 244 err = devlink_info_version_stored_put(req, info->key, 245 version); 246 else 247 err = devlink_info_version_running_put(req, info->key, 248 version); 249 if (err) 250 return err; 251 } 252 253 return 0; 254 } 255 256 static int 257 nfp_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req, 258 struct netlink_ext_ack *extack) 259 { 260 struct nfp_pf *pf = devlink_priv(devlink); 261 const char *sn, *vendor, *part; 262 struct nfp_nsp *nsp; 263 char *buf = NULL; 264 int err; 265 266 err = devlink_info_driver_name_put(req, "nfp"); 267 if (err) 268 return err; 269 270 vendor = nfp_hwinfo_lookup(pf->hwinfo, "assembly.vendor"); 271 part = nfp_hwinfo_lookup(pf->hwinfo, "assembly.partno"); 272 sn = nfp_hwinfo_lookup(pf->hwinfo, "assembly.serial"); 273 if (vendor && part && sn) { 274 char *buf; 275 276 buf = kmalloc(strlen(vendor) + strlen(part) + strlen(sn) + 1, 277 GFP_KERNEL); 278 if (!buf) 279 return -ENOMEM; 280 281 buf[0] = '\0'; 282 strcat(buf, vendor); 283 strcat(buf, part); 284 strcat(buf, sn); 285 286 err = devlink_info_serial_number_put(req, buf); 287 kfree(buf); 288 if (err) 289 return err; 290 } 291 292 nsp = nfp_nsp_open(pf->cpp); 293 if (IS_ERR(nsp)) { 294 NL_SET_ERR_MSG_MOD(extack, "can't access NSP"); 295 return PTR_ERR(nsp); 296 } 297 298 if (nfp_nsp_has_versions(nsp)) { 299 buf = kzalloc(NFP_NSP_VERSION_BUFSZ, GFP_KERNEL); 300 if (!buf) { 301 err = -ENOMEM; 302 goto err_close_nsp; 303 } 304 305 err = nfp_nsp_versions(nsp, buf, NFP_NSP_VERSION_BUFSZ); 306 if (err) 307 goto err_free_buf; 308 309 err = nfp_devlink_versions_get_nsp(req, false, 310 buf, NFP_NSP_VERSION_BUFSZ); 311 if (err) 312 goto err_free_buf; 313 314 err = nfp_devlink_versions_get_nsp(req, true, 315 buf, NFP_NSP_VERSION_BUFSZ); 316 if (err) 317 goto err_free_buf; 318 319 kfree(buf); 320 } 321 322 nfp_nsp_close(nsp); 323 324 return nfp_devlink_versions_get_hwinfo(pf, req); 325 326 err_free_buf: 327 kfree(buf); 328 err_close_nsp: 329 nfp_nsp_close(nsp); 330 return err; 331 } 332 333 static int 334 nfp_devlink_flash_update(struct devlink *devlink, const char *path, 335 const char *component, struct netlink_ext_ack *extack) 336 { 337 if (component) 338 return -EOPNOTSUPP; 339 return nfp_flash_update_common(devlink_priv(devlink), path, extack); 340 } 341 342 const struct devlink_ops nfp_devlink_ops = { 343 .port_split = nfp_devlink_port_split, 344 .port_unsplit = nfp_devlink_port_unsplit, 345 .sb_pool_get = nfp_devlink_sb_pool_get, 346 .sb_pool_set = nfp_devlink_sb_pool_set, 347 .eswitch_mode_get = nfp_devlink_eswitch_mode_get, 348 .eswitch_mode_set = nfp_devlink_eswitch_mode_set, 349 .info_get = nfp_devlink_info_get, 350 .flash_update = nfp_devlink_flash_update, 351 }; 352 353 int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port) 354 { 355 struct nfp_eth_table_port eth_port; 356 struct devlink *devlink; 357 int ret; 358 359 rtnl_lock(); 360 ret = nfp_devlink_fill_eth_port(port, ð_port); 361 rtnl_unlock(); 362 if (ret) 363 return ret; 364 365 devlink_port_type_eth_set(&port->dl_port, port->netdev); 366 devlink_port_attrs_set(&port->dl_port, DEVLINK_PORT_FLAVOUR_PHYSICAL, 367 eth_port.label_port, eth_port.is_split, 368 eth_port.label_subport); 369 370 devlink = priv_to_devlink(app->pf); 371 372 return devlink_port_register(devlink, &port->dl_port, port->eth_id); 373 } 374 375 void nfp_devlink_port_unregister(struct nfp_port *port) 376 { 377 devlink_port_unregister(&port->dl_port); 378 } 379 380 struct devlink *nfp_devlink_get_devlink(struct net_device *netdev) 381 { 382 struct nfp_app *app; 383 384 app = nfp_app_from_netdev(netdev); 385 if (!app) 386 return NULL; 387 388 return priv_to_devlink(app->pf); 389 } 390