1 /* QLogic qed NIC Driver 2 * Copyright (c) 2015-2017 QLogic Corporation 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and /or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #ifndef _QED_SRIOV_H 34 #define _QED_SRIOV_H 35 #include <linux/crash_dump.h> 36 #include <linux/types.h> 37 #include "qed_vf.h" 38 39 #define QED_ETH_VF_NUM_MAC_FILTERS 1 40 #define QED_ETH_VF_NUM_VLAN_FILTERS 2 41 #define QED_VF_ARRAY_LENGTH (3) 42 43 #ifdef CONFIG_QED_SRIOV 44 #define IS_VF(cdev) (is_kdump_kernel() ? \ 45 (0) : ((cdev)->b_is_vf)) 46 #define IS_PF(cdev) (is_kdump_kernel() ? \ 47 (1) : !((cdev)->b_is_vf)) 48 #define IS_PF_SRIOV(p_hwfn) (is_kdump_kernel() ? \ 49 (0) : !!((p_hwfn)->cdev->p_iov_info)) 50 #else 51 #define IS_VF(cdev) (0) 52 #define IS_PF(cdev) (1) 53 #define IS_PF_SRIOV(p_hwfn) (0) 54 #endif 55 #define IS_PF_SRIOV_ALLOC(p_hwfn) (!!((p_hwfn)->pf_iov_info)) 56 57 #define QED_MAX_VF_CHAINS_PER_PF 16 58 59 #define QED_ETH_MAX_VF_NUM_VLAN_FILTERS \ 60 (MAX_NUM_VFS * QED_ETH_VF_NUM_VLAN_FILTERS) 61 62 enum qed_iov_vport_update_flag { 63 QED_IOV_VP_UPDATE_ACTIVATE, 64 QED_IOV_VP_UPDATE_VLAN_STRIP, 65 QED_IOV_VP_UPDATE_TX_SWITCH, 66 QED_IOV_VP_UPDATE_MCAST, 67 QED_IOV_VP_UPDATE_ACCEPT_PARAM, 68 QED_IOV_VP_UPDATE_RSS, 69 QED_IOV_VP_UPDATE_ACCEPT_ANY_VLAN, 70 QED_IOV_VP_UPDATE_SGE_TPA, 71 QED_IOV_VP_UPDATE_MAX, 72 }; 73 74 struct qed_public_vf_info { 75 /* These copies will later be reflected in the bulletin board, 76 * but this copy should be newer. 77 */ 78 u8 forced_mac[ETH_ALEN]; 79 u16 forced_vlan; 80 u8 mac[ETH_ALEN]; 81 82 /* IFLA_VF_LINK_STATE_<X> */ 83 int link_state; 84 85 /* Currently configured Tx rate in MB/sec. 0 if unconfigured */ 86 int tx_rate; 87 88 /* Trusted VFs can configure promiscuous mode. 89 * Also store shadow promisc configuration if needed. 90 */ 91 bool is_trusted_configured; 92 bool is_trusted_request; 93 u8 rx_accept_mode; 94 u8 tx_accept_mode; 95 }; 96 97 struct qed_iov_vf_init_params { 98 u16 rel_vf_id; 99 100 /* Number of requested Queues; Currently, don't support different 101 * number of Rx/Tx queues. 102 */ 103 104 u16 num_queues; 105 106 /* Allow the client to choose which qzones to use for Rx/Tx, 107 * and which queue_base to use for Tx queues on a per-queue basis. 108 * Notice values should be relative to the PF resources. 109 */ 110 u16 req_rx_queue[QED_MAX_VF_CHAINS_PER_PF]; 111 u16 req_tx_queue[QED_MAX_VF_CHAINS_PER_PF]; 112 }; 113 114 /* This struct is part of qed_dev and contains data relevant to all hwfns; 115 * Initialized only if SR-IOV cpabability is exposed in PCIe config space. 116 */ 117 struct qed_hw_sriov_info { 118 int pos; /* capability position */ 119 int nres; /* number of resources */ 120 u32 cap; /* SR-IOV Capabilities */ 121 u16 ctrl; /* SR-IOV Control */ 122 u16 total_vfs; /* total VFs associated with the PF */ 123 u16 num_vfs; /* number of vfs that have been started */ 124 u16 initial_vfs; /* initial VFs associated with the PF */ 125 u16 nr_virtfn; /* number of VFs available */ 126 u16 offset; /* first VF Routing ID offset */ 127 u16 stride; /* following VF stride */ 128 u16 vf_device_id; /* VF device id */ 129 u32 pgsz; /* page size for BAR alignment */ 130 u8 link; /* Function Dependency Link */ 131 132 u32 first_vf_in_pf; 133 }; 134 135 /* This mailbox is maintained per VF in its PF contains all information 136 * required for sending / receiving a message. 137 */ 138 struct qed_iov_vf_mbx { 139 union vfpf_tlvs *req_virt; 140 dma_addr_t req_phys; 141 union pfvf_tlvs *reply_virt; 142 dma_addr_t reply_phys; 143 144 /* Address in VF where a pending message is located */ 145 dma_addr_t pending_req; 146 147 /* Message from VF awaits handling */ 148 bool b_pending_msg; 149 150 u8 *offset; 151 152 /* saved VF request header */ 153 struct vfpf_first_tlv first_tlv; 154 }; 155 156 #define QED_IOV_LEGACY_QID_RX (0) 157 #define QED_IOV_LEGACY_QID_TX (1) 158 #define QED_IOV_QID_INVALID (0xFE) 159 160 struct qed_vf_queue_cid { 161 bool b_is_tx; 162 struct qed_queue_cid *p_cid; 163 }; 164 165 /* Describes a qzone associated with the VF */ 166 struct qed_vf_queue { 167 u16 fw_rx_qid; 168 u16 fw_tx_qid; 169 170 struct qed_vf_queue_cid cids[MAX_QUEUES_PER_QZONE]; 171 }; 172 173 enum vf_state { 174 VF_FREE = 0, /* VF ready to be acquired holds no resc */ 175 VF_ACQUIRED, /* VF, acquired, but not initalized */ 176 VF_ENABLED, /* VF, Enabled */ 177 VF_RESET, /* VF, FLR'd, pending cleanup */ 178 VF_STOPPED /* VF, Stopped */ 179 }; 180 181 struct qed_vf_vlan_shadow { 182 bool used; 183 u16 vid; 184 }; 185 186 struct qed_vf_shadow_config { 187 /* Shadow copy of all guest vlans */ 188 struct qed_vf_vlan_shadow vlans[QED_ETH_VF_NUM_VLAN_FILTERS + 1]; 189 190 /* Shadow copy of all configured MACs; Empty if forcing MACs */ 191 u8 macs[QED_ETH_VF_NUM_MAC_FILTERS][ETH_ALEN]; 192 u8 inner_vlan_removal; 193 }; 194 195 /* PFs maintain an array of this structure, per VF */ 196 struct qed_vf_info { 197 struct qed_iov_vf_mbx vf_mbx; 198 enum vf_state state; 199 bool b_init; 200 bool b_malicious; 201 u8 to_disable; 202 203 struct qed_bulletin bulletin; 204 dma_addr_t vf_bulletin; 205 206 /* PF saves a copy of the last VF acquire message */ 207 struct vfpf_acquire_tlv acquire; 208 209 u32 concrete_fid; 210 u16 opaque_fid; 211 u16 mtu; 212 213 u8 vport_id; 214 u8 relative_vf_id; 215 u8 abs_vf_id; 216 #define QED_VF_ABS_ID(p_hwfn, p_vf) (QED_PATH_ID(p_hwfn) ? \ 217 (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \ 218 (p_vf)->abs_vf_id) 219 220 u8 vport_instance; 221 u8 num_rxqs; 222 u8 num_txqs; 223 224 u16 rx_coal; 225 u16 tx_coal; 226 227 u8 num_sbs; 228 229 u8 num_mac_filters; 230 u8 num_vlan_filters; 231 232 struct qed_vf_queue vf_queues[QED_MAX_VF_CHAINS_PER_PF]; 233 u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF]; 234 u8 num_active_rxqs; 235 struct qed_public_vf_info p_vf_info; 236 bool spoof_chk; 237 bool req_spoofchk_val; 238 239 /* Stores the configuration requested by VF */ 240 struct qed_vf_shadow_config shadow_config; 241 242 /* A bitfield using bulletin's valid-map bits, used to indicate 243 * which of the bulletin board features have been configured. 244 */ 245 u64 configured_features; 246 #define QED_IOV_CONFIGURED_FEATURES_MASK ((1 << MAC_ADDR_FORCED) | \ 247 (1 << VLAN_ADDR_FORCED)) 248 }; 249 250 /* This structure is part of qed_hwfn and used only for PFs that have sriov 251 * capability enabled. 252 */ 253 struct qed_pf_iov { 254 struct qed_vf_info vfs_array[MAX_NUM_VFS]; 255 u64 pending_flr[QED_VF_ARRAY_LENGTH]; 256 257 /* Allocate message address continuosuly and split to each VF */ 258 void *mbx_msg_virt_addr; 259 dma_addr_t mbx_msg_phys_addr; 260 u32 mbx_msg_size; 261 void *mbx_reply_virt_addr; 262 dma_addr_t mbx_reply_phys_addr; 263 u32 mbx_reply_size; 264 void *p_bulletins; 265 dma_addr_t bulletins_phys; 266 u32 bulletins_size; 267 }; 268 269 enum qed_iov_wq_flag { 270 QED_IOV_WQ_MSG_FLAG, 271 QED_IOV_WQ_SET_UNICAST_FILTER_FLAG, 272 QED_IOV_WQ_BULLETIN_UPDATE_FLAG, 273 QED_IOV_WQ_STOP_WQ_FLAG, 274 QED_IOV_WQ_FLR_FLAG, 275 QED_IOV_WQ_TRUST_FLAG, 276 QED_IOV_WQ_VF_FORCE_LINK_QUERY_FLAG, 277 }; 278 279 #ifdef CONFIG_QED_SRIOV 280 /** 281 * @brief Check if given VF ID @vfid is valid 282 * w.r.t. @b_enabled_only value 283 * if b_enabled_only = true - only enabled VF id is valid 284 * else any VF id less than max_vfs is valid 285 * 286 * @param p_hwfn 287 * @param rel_vf_id - Relative VF ID 288 * @param b_enabled_only - consider only enabled VF 289 * @param b_non_malicious - true iff we want to validate vf isn't malicious. 290 * 291 * @return bool - true for valid VF ID 292 */ 293 bool qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn, 294 int rel_vf_id, 295 bool b_enabled_only, bool b_non_malicious); 296 297 /** 298 * @brief - Given a VF index, return index of next [including that] active VF. 299 * 300 * @param p_hwfn 301 * @param rel_vf_id 302 * 303 * @return MAX_NUM_VFS in case no further active VFs, otherwise index. 304 */ 305 u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id); 306 307 void qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, 308 int vfid, u16 vxlan_port, u16 geneve_port); 309 310 /** 311 * @brief Read sriov related information and allocated resources 312 * reads from configuration space, shmem, etc. 313 * 314 * @param p_hwfn 315 * 316 * @return int 317 */ 318 int qed_iov_hw_info(struct qed_hwfn *p_hwfn); 319 320 /** 321 * @brief qed_add_tlv - place a given tlv on the tlv buffer at next offset 322 * 323 * @param p_hwfn 324 * @param p_iov 325 * @param type 326 * @param length 327 * 328 * @return pointer to the newly placed tlv 329 */ 330 void *qed_add_tlv(struct qed_hwfn *p_hwfn, u8 **offset, u16 type, u16 length); 331 332 /** 333 * @brief list the types and lengths of the tlvs on the buffer 334 * 335 * @param p_hwfn 336 * @param tlvs_list 337 */ 338 void qed_dp_tlv_list(struct qed_hwfn *p_hwfn, void *tlvs_list); 339 340 /** 341 * @brief qed_iov_alloc - allocate sriov related resources 342 * 343 * @param p_hwfn 344 * 345 * @return int 346 */ 347 int qed_iov_alloc(struct qed_hwfn *p_hwfn); 348 349 /** 350 * @brief qed_iov_setup - setup sriov related resources 351 * 352 * @param p_hwfn 353 */ 354 void qed_iov_setup(struct qed_hwfn *p_hwfn); 355 356 /** 357 * @brief qed_iov_free - free sriov related resources 358 * 359 * @param p_hwfn 360 */ 361 void qed_iov_free(struct qed_hwfn *p_hwfn); 362 363 /** 364 * @brief free sriov related memory that was allocated during hw_prepare 365 * 366 * @param cdev 367 */ 368 void qed_iov_free_hw_info(struct qed_dev *cdev); 369 370 /** 371 * @brief Mark structs of vfs that have been FLR-ed. 372 * 373 * @param p_hwfn 374 * @param disabled_vfs - bitmask of all VFs on path that were FLRed 375 * 376 * @return true iff one of the PF's vfs got FLRed. false otherwise. 377 */ 378 bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs); 379 380 /** 381 * @brief Search extended TLVs in request/reply buffer. 382 * 383 * @param p_hwfn 384 * @param p_tlvs_list - Pointer to tlvs list 385 * @param req_type - Type of TLV 386 * 387 * @return pointer to tlv type if found, otherwise returns NULL. 388 */ 389 void *qed_iov_search_list_tlvs(struct qed_hwfn *p_hwfn, 390 void *p_tlvs_list, u16 req_type); 391 392 void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first); 393 int qed_iov_wq_start(struct qed_dev *cdev); 394 395 void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag); 396 void qed_vf_start_iov_wq(struct qed_dev *cdev); 397 int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled); 398 void qed_inform_vf_link_state(struct qed_hwfn *hwfn); 399 #else 400 static inline bool 401 qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn, 402 int rel_vf_id, bool b_enabled_only, bool b_non_malicious) 403 { 404 return false; 405 } 406 407 static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, 408 u16 rel_vf_id) 409 { 410 return MAX_NUM_VFS; 411 } 412 413 static inline void 414 qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, int vfid, 415 u16 vxlan_port, u16 geneve_port) 416 { 417 } 418 419 static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn) 420 { 421 return 0; 422 } 423 424 static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn) 425 { 426 return 0; 427 } 428 429 static inline void qed_iov_setup(struct qed_hwfn *p_hwfn) 430 { 431 } 432 433 static inline void qed_iov_free(struct qed_hwfn *p_hwfn) 434 { 435 } 436 437 static inline void qed_iov_free_hw_info(struct qed_dev *cdev) 438 { 439 } 440 441 static inline bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, 442 u32 *disabled_vfs) 443 { 444 return false; 445 } 446 447 static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first) 448 { 449 } 450 451 static inline int qed_iov_wq_start(struct qed_dev *cdev) 452 { 453 return 0; 454 } 455 456 static inline void qed_schedule_iov(struct qed_hwfn *hwfn, 457 enum qed_iov_wq_flag flag) 458 { 459 } 460 461 static inline void qed_vf_start_iov_wq(struct qed_dev *cdev) 462 { 463 } 464 465 static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled) 466 { 467 return 0; 468 } 469 470 static inline void qed_inform_vf_link_state(struct qed_hwfn *hwfn) 471 { 472 } 473 #endif 474 475 #define qed_for_each_vf(_p_hwfn, _i) \ 476 for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \ 477 _i < MAX_NUM_VFS; \ 478 _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1)) 479 480 #endif 481