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 struct qed_vf_q_info { 153 u16 fw_rx_qid; 154 struct qed_queue_cid *p_rx_cid; 155 u16 fw_tx_qid; 156 struct qed_queue_cid *p_tx_cid; 157 u8 fw_cid; 158 }; 159 160 enum vf_state { 161 VF_FREE = 0, /* VF ready to be acquired holds no resc */ 162 VF_ACQUIRED, /* VF, acquired, but not initalized */ 163 VF_ENABLED, /* VF, Enabled */ 164 VF_RESET, /* VF, FLR'd, pending cleanup */ 165 VF_STOPPED /* VF, Stopped */ 166 }; 167 168 struct qed_vf_vlan_shadow { 169 bool used; 170 u16 vid; 171 }; 172 173 struct qed_vf_shadow_config { 174 /* Shadow copy of all guest vlans */ 175 struct qed_vf_vlan_shadow vlans[QED_ETH_VF_NUM_VLAN_FILTERS + 1]; 176 177 /* Shadow copy of all configured MACs; Empty if forcing MACs */ 178 u8 macs[QED_ETH_VF_NUM_MAC_FILTERS][ETH_ALEN]; 179 u8 inner_vlan_removal; 180 }; 181 182 /* PFs maintain an array of this structure, per VF */ 183 struct qed_vf_info { 184 struct qed_iov_vf_mbx vf_mbx; 185 enum vf_state state; 186 bool b_init; 187 bool b_malicious; 188 u8 to_disable; 189 190 struct qed_bulletin bulletin; 191 dma_addr_t vf_bulletin; 192 193 /* PF saves a copy of the last VF acquire message */ 194 struct vfpf_acquire_tlv acquire; 195 196 u32 concrete_fid; 197 u16 opaque_fid; 198 u16 mtu; 199 200 u8 vport_id; 201 u8 relative_vf_id; 202 u8 abs_vf_id; 203 #define QED_VF_ABS_ID(p_hwfn, p_vf) (QED_PATH_ID(p_hwfn) ? \ 204 (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \ 205 (p_vf)->abs_vf_id) 206 207 u8 vport_instance; 208 u8 num_rxqs; 209 u8 num_txqs; 210 211 u8 num_sbs; 212 213 u8 num_mac_filters; 214 u8 num_vlan_filters; 215 struct qed_vf_q_info vf_queues[QED_MAX_VF_CHAINS_PER_PF]; 216 u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF]; 217 u8 num_active_rxqs; 218 struct qed_public_vf_info p_vf_info; 219 bool spoof_chk; 220 bool req_spoofchk_val; 221 222 /* Stores the configuration requested by VF */ 223 struct qed_vf_shadow_config shadow_config; 224 225 /* A bitfield using bulletin's valid-map bits, used to indicate 226 * which of the bulletin board features have been configured. 227 */ 228 u64 configured_features; 229 #define QED_IOV_CONFIGURED_FEATURES_MASK ((1 << MAC_ADDR_FORCED) | \ 230 (1 << VLAN_ADDR_FORCED)) 231 }; 232 233 /* This structure is part of qed_hwfn and used only for PFs that have sriov 234 * capability enabled. 235 */ 236 struct qed_pf_iov { 237 struct qed_vf_info vfs_array[MAX_NUM_VFS]; 238 u64 pending_flr[QED_VF_ARRAY_LENGTH]; 239 240 /* Allocate message address continuosuly and split to each VF */ 241 void *mbx_msg_virt_addr; 242 dma_addr_t mbx_msg_phys_addr; 243 u32 mbx_msg_size; 244 void *mbx_reply_virt_addr; 245 dma_addr_t mbx_reply_phys_addr; 246 u32 mbx_reply_size; 247 void *p_bulletins; 248 dma_addr_t bulletins_phys; 249 u32 bulletins_size; 250 }; 251 252 enum qed_iov_wq_flag { 253 QED_IOV_WQ_MSG_FLAG, 254 QED_IOV_WQ_SET_UNICAST_FILTER_FLAG, 255 QED_IOV_WQ_BULLETIN_UPDATE_FLAG, 256 QED_IOV_WQ_STOP_WQ_FLAG, 257 QED_IOV_WQ_FLR_FLAG, 258 QED_IOV_WQ_TRUST_FLAG, 259 QED_IOV_WQ_VF_FORCE_LINK_QUERY_FLAG, 260 }; 261 262 #ifdef CONFIG_QED_SRIOV 263 /** 264 * @brief - Given a VF index, return index of next [including that] active VF. 265 * 266 * @param p_hwfn 267 * @param rel_vf_id 268 * 269 * @return MAX_NUM_VFS in case no further active VFs, otherwise index. 270 */ 271 u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id); 272 273 void qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, 274 int vfid, u16 vxlan_port, u16 geneve_port); 275 276 /** 277 * @brief Read sriov related information and allocated resources 278 * reads from configuraiton space, shmem, etc. 279 * 280 * @param p_hwfn 281 * 282 * @return int 283 */ 284 int qed_iov_hw_info(struct qed_hwfn *p_hwfn); 285 286 /** 287 * @brief qed_add_tlv - place a given tlv on the tlv buffer at next offset 288 * 289 * @param p_hwfn 290 * @param p_iov 291 * @param type 292 * @param length 293 * 294 * @return pointer to the newly placed tlv 295 */ 296 void *qed_add_tlv(struct qed_hwfn *p_hwfn, u8 **offset, u16 type, u16 length); 297 298 /** 299 * @brief list the types and lengths of the tlvs on the buffer 300 * 301 * @param p_hwfn 302 * @param tlvs_list 303 */ 304 void qed_dp_tlv_list(struct qed_hwfn *p_hwfn, void *tlvs_list); 305 306 /** 307 * @brief qed_iov_alloc - allocate sriov related resources 308 * 309 * @param p_hwfn 310 * 311 * @return int 312 */ 313 int qed_iov_alloc(struct qed_hwfn *p_hwfn); 314 315 /** 316 * @brief qed_iov_setup - setup sriov related resources 317 * 318 * @param p_hwfn 319 * @param p_ptt 320 */ 321 void qed_iov_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 322 323 /** 324 * @brief qed_iov_free - free sriov related resources 325 * 326 * @param p_hwfn 327 */ 328 void qed_iov_free(struct qed_hwfn *p_hwfn); 329 330 /** 331 * @brief free sriov related memory that was allocated during hw_prepare 332 * 333 * @param cdev 334 */ 335 void qed_iov_free_hw_info(struct qed_dev *cdev); 336 337 /** 338 * @brief qed_sriov_eqe_event - handle async sriov event arrived on eqe. 339 * 340 * @param p_hwfn 341 * @param opcode 342 * @param echo 343 * @param data 344 */ 345 int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, 346 u8 opcode, __le16 echo, union event_ring_data *data); 347 348 /** 349 * @brief Mark structs of vfs that have been FLR-ed. 350 * 351 * @param p_hwfn 352 * @param disabled_vfs - bitmask of all VFs on path that were FLRed 353 * 354 * @return true iff one of the PF's vfs got FLRed. false otherwise. 355 */ 356 bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs); 357 358 /** 359 * @brief Search extended TLVs in request/reply buffer. 360 * 361 * @param p_hwfn 362 * @param p_tlvs_list - Pointer to tlvs list 363 * @param req_type - Type of TLV 364 * 365 * @return pointer to tlv type if found, otherwise returns NULL. 366 */ 367 void *qed_iov_search_list_tlvs(struct qed_hwfn *p_hwfn, 368 void *p_tlvs_list, u16 req_type); 369 370 void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first); 371 int qed_iov_wq_start(struct qed_dev *cdev); 372 373 void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag); 374 void qed_vf_start_iov_wq(struct qed_dev *cdev); 375 int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled); 376 void qed_inform_vf_link_state(struct qed_hwfn *hwfn); 377 #else 378 static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, 379 u16 rel_vf_id) 380 { 381 return MAX_NUM_VFS; 382 } 383 384 static inline void 385 qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, int vfid, 386 u16 vxlan_port, u16 geneve_port) 387 { 388 } 389 390 static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn) 391 { 392 return 0; 393 } 394 395 static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn) 396 { 397 return 0; 398 } 399 400 static inline void qed_iov_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 401 { 402 } 403 404 static inline void qed_iov_free(struct qed_hwfn *p_hwfn) 405 { 406 } 407 408 static inline void qed_iov_free_hw_info(struct qed_dev *cdev) 409 { 410 } 411 412 static inline int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, 413 u8 opcode, 414 __le16 echo, union event_ring_data *data) 415 { 416 return -EINVAL; 417 } 418 419 static inline bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, 420 u32 *disabled_vfs) 421 { 422 return false; 423 } 424 425 static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first) 426 { 427 } 428 429 static inline int qed_iov_wq_start(struct qed_dev *cdev) 430 { 431 return 0; 432 } 433 434 static inline void qed_schedule_iov(struct qed_hwfn *hwfn, 435 enum qed_iov_wq_flag flag) 436 { 437 } 438 439 static inline void qed_vf_start_iov_wq(struct qed_dev *cdev) 440 { 441 } 442 443 static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled) 444 { 445 return 0; 446 } 447 448 static inline void qed_inform_vf_link_state(struct qed_hwfn *hwfn) 449 { 450 } 451 #endif 452 453 #define qed_for_each_vf(_p_hwfn, _i) \ 454 for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \ 455 _i < MAX_NUM_VFS; \ 456 _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1)) 457 458 #endif 459