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/types.h> 36 #include "qed_vf.h" 37 38 #define QED_ETH_VF_NUM_MAC_FILTERS 1 39 #define QED_ETH_VF_NUM_VLAN_FILTERS 2 40 #define QED_VF_ARRAY_LENGTH (3) 41 42 #ifdef CONFIG_QED_SRIOV 43 #define IS_VF(cdev) ((cdev)->b_is_vf) 44 #define IS_PF(cdev) (!((cdev)->b_is_vf)) 45 #define IS_PF_SRIOV(p_hwfn) (!!((p_hwfn)->cdev->p_iov_info)) 46 #else 47 #define IS_VF(cdev) (0) 48 #define IS_PF(cdev) (1) 49 #define IS_PF_SRIOV(p_hwfn) (0) 50 #endif 51 #define IS_PF_SRIOV_ALLOC(p_hwfn) (!!((p_hwfn)->pf_iov_info)) 52 53 #define QED_MAX_VF_CHAINS_PER_PF 16 54 55 #define QED_ETH_MAX_VF_NUM_VLAN_FILTERS \ 56 (MAX_NUM_VFS * QED_ETH_VF_NUM_VLAN_FILTERS) 57 58 enum qed_iov_vport_update_flag { 59 QED_IOV_VP_UPDATE_ACTIVATE, 60 QED_IOV_VP_UPDATE_VLAN_STRIP, 61 QED_IOV_VP_UPDATE_TX_SWITCH, 62 QED_IOV_VP_UPDATE_MCAST, 63 QED_IOV_VP_UPDATE_ACCEPT_PARAM, 64 QED_IOV_VP_UPDATE_RSS, 65 QED_IOV_VP_UPDATE_ACCEPT_ANY_VLAN, 66 QED_IOV_VP_UPDATE_SGE_TPA, 67 QED_IOV_VP_UPDATE_MAX, 68 }; 69 70 struct qed_public_vf_info { 71 /* These copies will later be reflected in the bulletin board, 72 * but this copy should be newer. 73 */ 74 u8 forced_mac[ETH_ALEN]; 75 u16 forced_vlan; 76 u8 mac[ETH_ALEN]; 77 78 /* IFLA_VF_LINK_STATE_<X> */ 79 int link_state; 80 81 /* Currently configured Tx rate in MB/sec. 0 if unconfigured */ 82 int tx_rate; 83 84 /* Trusted VFs can configure promiscuous mode. 85 * Also store shadow promisc configuration if needed. 86 */ 87 bool is_trusted_configured; 88 bool is_trusted_request; 89 u8 rx_accept_mode; 90 u8 tx_accept_mode; 91 }; 92 93 struct qed_iov_vf_init_params { 94 u16 rel_vf_id; 95 96 /* Number of requested Queues; Currently, don't support different 97 * number of Rx/Tx queues. 98 */ 99 100 u16 num_queues; 101 102 /* Allow the client to choose which qzones to use for Rx/Tx, 103 * and which queue_base to use for Tx queues on a per-queue basis. 104 * Notice values should be relative to the PF resources. 105 */ 106 u16 req_rx_queue[QED_MAX_VF_CHAINS_PER_PF]; 107 u16 req_tx_queue[QED_MAX_VF_CHAINS_PER_PF]; 108 }; 109 110 /* This struct is part of qed_dev and contains data relevant to all hwfns; 111 * Initialized only if SR-IOV cpabability is exposed in PCIe config space. 112 */ 113 struct qed_hw_sriov_info { 114 int pos; /* capability position */ 115 int nres; /* number of resources */ 116 u32 cap; /* SR-IOV Capabilities */ 117 u16 ctrl; /* SR-IOV Control */ 118 u16 total_vfs; /* total VFs associated with the PF */ 119 u16 num_vfs; /* number of vfs that have been started */ 120 u16 initial_vfs; /* initial VFs associated with the PF */ 121 u16 nr_virtfn; /* number of VFs available */ 122 u16 offset; /* first VF Routing ID offset */ 123 u16 stride; /* following VF stride */ 124 u16 vf_device_id; /* VF device id */ 125 u32 pgsz; /* page size for BAR alignment */ 126 u8 link; /* Function Dependency Link */ 127 128 u32 first_vf_in_pf; 129 }; 130 131 /* This mailbox is maintained per VF in its PF contains all information 132 * required for sending / receiving a message. 133 */ 134 struct qed_iov_vf_mbx { 135 union vfpf_tlvs *req_virt; 136 dma_addr_t req_phys; 137 union pfvf_tlvs *reply_virt; 138 dma_addr_t reply_phys; 139 140 /* Address in VF where a pending message is located */ 141 dma_addr_t pending_req; 142 143 /* Message from VF awaits handling */ 144 bool b_pending_msg; 145 146 u8 *offset; 147 148 /* saved VF request header */ 149 struct vfpf_first_tlv first_tlv; 150 }; 151 152 #define QED_IOV_LEGACY_QID_RX (0) 153 #define QED_IOV_LEGACY_QID_TX (1) 154 #define QED_IOV_QID_INVALID (0xFE) 155 156 struct qed_vf_queue_cid { 157 bool b_is_tx; 158 struct qed_queue_cid *p_cid; 159 }; 160 161 /* Describes a qzone associated with the VF */ 162 struct qed_vf_queue { 163 u16 fw_rx_qid; 164 u16 fw_tx_qid; 165 166 struct qed_vf_queue_cid cids[MAX_QUEUES_PER_QZONE]; 167 }; 168 169 enum vf_state { 170 VF_FREE = 0, /* VF ready to be acquired holds no resc */ 171 VF_ACQUIRED, /* VF, acquired, but not initalized */ 172 VF_ENABLED, /* VF, Enabled */ 173 VF_RESET, /* VF, FLR'd, pending cleanup */ 174 VF_STOPPED /* VF, Stopped */ 175 }; 176 177 struct qed_vf_vlan_shadow { 178 bool used; 179 u16 vid; 180 }; 181 182 struct qed_vf_shadow_config { 183 /* Shadow copy of all guest vlans */ 184 struct qed_vf_vlan_shadow vlans[QED_ETH_VF_NUM_VLAN_FILTERS + 1]; 185 186 /* Shadow copy of all configured MACs; Empty if forcing MACs */ 187 u8 macs[QED_ETH_VF_NUM_MAC_FILTERS][ETH_ALEN]; 188 u8 inner_vlan_removal; 189 }; 190 191 /* PFs maintain an array of this structure, per VF */ 192 struct qed_vf_info { 193 struct qed_iov_vf_mbx vf_mbx; 194 enum vf_state state; 195 bool b_init; 196 bool b_malicious; 197 u8 to_disable; 198 199 struct qed_bulletin bulletin; 200 dma_addr_t vf_bulletin; 201 202 /* PF saves a copy of the last VF acquire message */ 203 struct vfpf_acquire_tlv acquire; 204 205 u32 concrete_fid; 206 u16 opaque_fid; 207 u16 mtu; 208 209 u8 vport_id; 210 u8 relative_vf_id; 211 u8 abs_vf_id; 212 #define QED_VF_ABS_ID(p_hwfn, p_vf) (QED_PATH_ID(p_hwfn) ? \ 213 (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \ 214 (p_vf)->abs_vf_id) 215 216 u8 vport_instance; 217 u8 num_rxqs; 218 u8 num_txqs; 219 220 u8 num_sbs; 221 222 u8 num_mac_filters; 223 u8 num_vlan_filters; 224 225 struct qed_vf_queue vf_queues[QED_MAX_VF_CHAINS_PER_PF]; 226 u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF]; 227 u8 num_active_rxqs; 228 struct qed_public_vf_info p_vf_info; 229 bool spoof_chk; 230 bool req_spoofchk_val; 231 232 /* Stores the configuration requested by VF */ 233 struct qed_vf_shadow_config shadow_config; 234 235 /* A bitfield using bulletin's valid-map bits, used to indicate 236 * which of the bulletin board features have been configured. 237 */ 238 u64 configured_features; 239 #define QED_IOV_CONFIGURED_FEATURES_MASK ((1 << MAC_ADDR_FORCED) | \ 240 (1 << VLAN_ADDR_FORCED)) 241 }; 242 243 /* This structure is part of qed_hwfn and used only for PFs that have sriov 244 * capability enabled. 245 */ 246 struct qed_pf_iov { 247 struct qed_vf_info vfs_array[MAX_NUM_VFS]; 248 u64 pending_flr[QED_VF_ARRAY_LENGTH]; 249 250 /* Allocate message address continuosuly and split to each VF */ 251 void *mbx_msg_virt_addr; 252 dma_addr_t mbx_msg_phys_addr; 253 u32 mbx_msg_size; 254 void *mbx_reply_virt_addr; 255 dma_addr_t mbx_reply_phys_addr; 256 u32 mbx_reply_size; 257 void *p_bulletins; 258 dma_addr_t bulletins_phys; 259 u32 bulletins_size; 260 }; 261 262 enum qed_iov_wq_flag { 263 QED_IOV_WQ_MSG_FLAG, 264 QED_IOV_WQ_SET_UNICAST_FILTER_FLAG, 265 QED_IOV_WQ_BULLETIN_UPDATE_FLAG, 266 QED_IOV_WQ_STOP_WQ_FLAG, 267 QED_IOV_WQ_FLR_FLAG, 268 QED_IOV_WQ_TRUST_FLAG, 269 QED_IOV_WQ_VF_FORCE_LINK_QUERY_FLAG, 270 }; 271 272 #ifdef CONFIG_QED_SRIOV 273 /** 274 * @brief - Given a VF index, return index of next [including that] active VF. 275 * 276 * @param p_hwfn 277 * @param rel_vf_id 278 * 279 * @return MAX_NUM_VFS in case no further active VFs, otherwise index. 280 */ 281 u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id); 282 283 void qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, 284 int vfid, u16 vxlan_port, u16 geneve_port); 285 286 /** 287 * @brief Read sriov related information and allocated resources 288 * reads from configuraiton space, shmem, etc. 289 * 290 * @param p_hwfn 291 * 292 * @return int 293 */ 294 int qed_iov_hw_info(struct qed_hwfn *p_hwfn); 295 296 /** 297 * @brief qed_add_tlv - place a given tlv on the tlv buffer at next offset 298 * 299 * @param p_hwfn 300 * @param p_iov 301 * @param type 302 * @param length 303 * 304 * @return pointer to the newly placed tlv 305 */ 306 void *qed_add_tlv(struct qed_hwfn *p_hwfn, u8 **offset, u16 type, u16 length); 307 308 /** 309 * @brief list the types and lengths of the tlvs on the buffer 310 * 311 * @param p_hwfn 312 * @param tlvs_list 313 */ 314 void qed_dp_tlv_list(struct qed_hwfn *p_hwfn, void *tlvs_list); 315 316 /** 317 * @brief qed_iov_alloc - allocate sriov related resources 318 * 319 * @param p_hwfn 320 * 321 * @return int 322 */ 323 int qed_iov_alloc(struct qed_hwfn *p_hwfn); 324 325 /** 326 * @brief qed_iov_setup - setup sriov related resources 327 * 328 * @param p_hwfn 329 */ 330 void qed_iov_setup(struct qed_hwfn *p_hwfn); 331 332 /** 333 * @brief qed_iov_free - free sriov related resources 334 * 335 * @param p_hwfn 336 */ 337 void qed_iov_free(struct qed_hwfn *p_hwfn); 338 339 /** 340 * @brief free sriov related memory that was allocated during hw_prepare 341 * 342 * @param cdev 343 */ 344 void qed_iov_free_hw_info(struct qed_dev *cdev); 345 346 /** 347 * @brief qed_sriov_eqe_event - handle async sriov event arrived on eqe. 348 * 349 * @param p_hwfn 350 * @param opcode 351 * @param echo 352 * @param data 353 */ 354 int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, 355 u8 opcode, __le16 echo, union event_ring_data *data); 356 357 /** 358 * @brief Mark structs of vfs that have been FLR-ed. 359 * 360 * @param p_hwfn 361 * @param disabled_vfs - bitmask of all VFs on path that were FLRed 362 * 363 * @return true iff one of the PF's vfs got FLRed. false otherwise. 364 */ 365 bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs); 366 367 /** 368 * @brief Search extended TLVs in request/reply buffer. 369 * 370 * @param p_hwfn 371 * @param p_tlvs_list - Pointer to tlvs list 372 * @param req_type - Type of TLV 373 * 374 * @return pointer to tlv type if found, otherwise returns NULL. 375 */ 376 void *qed_iov_search_list_tlvs(struct qed_hwfn *p_hwfn, 377 void *p_tlvs_list, u16 req_type); 378 379 void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first); 380 int qed_iov_wq_start(struct qed_dev *cdev); 381 382 void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag); 383 void qed_vf_start_iov_wq(struct qed_dev *cdev); 384 int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled); 385 void qed_inform_vf_link_state(struct qed_hwfn *hwfn); 386 #else 387 static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, 388 u16 rel_vf_id) 389 { 390 return MAX_NUM_VFS; 391 } 392 393 static inline void 394 qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, int vfid, 395 u16 vxlan_port, u16 geneve_port) 396 { 397 } 398 399 static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn) 400 { 401 return 0; 402 } 403 404 static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn) 405 { 406 return 0; 407 } 408 409 static inline void qed_iov_setup(struct qed_hwfn *p_hwfn) 410 { 411 } 412 413 static inline void qed_iov_free(struct qed_hwfn *p_hwfn) 414 { 415 } 416 417 static inline void qed_iov_free_hw_info(struct qed_dev *cdev) 418 { 419 } 420 421 static inline int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, 422 u8 opcode, 423 __le16 echo, union event_ring_data *data) 424 { 425 return -EINVAL; 426 } 427 428 static inline bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, 429 u32 *disabled_vfs) 430 { 431 return false; 432 } 433 434 static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first) 435 { 436 } 437 438 static inline int qed_iov_wq_start(struct qed_dev *cdev) 439 { 440 return 0; 441 } 442 443 static inline void qed_schedule_iov(struct qed_hwfn *hwfn, 444 enum qed_iov_wq_flag flag) 445 { 446 } 447 448 static inline void qed_vf_start_iov_wq(struct qed_dev *cdev) 449 { 450 } 451 452 static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled) 453 { 454 return 0; 455 } 456 457 static inline void qed_inform_vf_link_state(struct qed_hwfn *hwfn) 458 { 459 } 460 #endif 461 462 #define qed_for_each_vf(_p_hwfn, _i) \ 463 for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \ 464 _i < MAX_NUM_VFS; \ 465 _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1)) 466 467 #endif 468