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 u8 *offset; 144 145 /* saved VF request header */ 146 struct vfpf_first_tlv first_tlv; 147 }; 148 149 struct qed_vf_q_info { 150 u16 fw_rx_qid; 151 struct qed_queue_cid *p_rx_cid; 152 u16 fw_tx_qid; 153 struct qed_queue_cid *p_tx_cid; 154 u8 fw_cid; 155 }; 156 157 enum vf_state { 158 VF_FREE = 0, /* VF ready to be acquired holds no resc */ 159 VF_ACQUIRED, /* VF, acquired, but not initalized */ 160 VF_ENABLED, /* VF, Enabled */ 161 VF_RESET, /* VF, FLR'd, pending cleanup */ 162 VF_STOPPED /* VF, Stopped */ 163 }; 164 165 struct qed_vf_vlan_shadow { 166 bool used; 167 u16 vid; 168 }; 169 170 struct qed_vf_shadow_config { 171 /* Shadow copy of all guest vlans */ 172 struct qed_vf_vlan_shadow vlans[QED_ETH_VF_NUM_VLAN_FILTERS + 1]; 173 174 /* Shadow copy of all configured MACs; Empty if forcing MACs */ 175 u8 macs[QED_ETH_VF_NUM_MAC_FILTERS][ETH_ALEN]; 176 u8 inner_vlan_removal; 177 }; 178 179 /* PFs maintain an array of this structure, per VF */ 180 struct qed_vf_info { 181 struct qed_iov_vf_mbx vf_mbx; 182 enum vf_state state; 183 bool b_init; 184 bool b_malicious; 185 u8 to_disable; 186 187 struct qed_bulletin bulletin; 188 dma_addr_t vf_bulletin; 189 190 /* PF saves a copy of the last VF acquire message */ 191 struct vfpf_acquire_tlv acquire; 192 193 u32 concrete_fid; 194 u16 opaque_fid; 195 u16 mtu; 196 197 u8 vport_id; 198 u8 relative_vf_id; 199 u8 abs_vf_id; 200 #define QED_VF_ABS_ID(p_hwfn, p_vf) (QED_PATH_ID(p_hwfn) ? \ 201 (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \ 202 (p_vf)->abs_vf_id) 203 204 u8 vport_instance; 205 u8 num_rxqs; 206 u8 num_txqs; 207 208 u8 num_sbs; 209 210 u8 num_mac_filters; 211 u8 num_vlan_filters; 212 struct qed_vf_q_info vf_queues[QED_MAX_VF_CHAINS_PER_PF]; 213 u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF]; 214 u8 num_active_rxqs; 215 struct qed_public_vf_info p_vf_info; 216 bool spoof_chk; 217 bool req_spoofchk_val; 218 219 /* Stores the configuration requested by VF */ 220 struct qed_vf_shadow_config shadow_config; 221 222 /* A bitfield using bulletin's valid-map bits, used to indicate 223 * which of the bulletin board features have been configured. 224 */ 225 u64 configured_features; 226 #define QED_IOV_CONFIGURED_FEATURES_MASK ((1 << MAC_ADDR_FORCED) | \ 227 (1 << VLAN_ADDR_FORCED)) 228 }; 229 230 /* This structure is part of qed_hwfn and used only for PFs that have sriov 231 * capability enabled. 232 */ 233 struct qed_pf_iov { 234 struct qed_vf_info vfs_array[MAX_NUM_VFS]; 235 u64 pending_events[QED_VF_ARRAY_LENGTH]; 236 u64 pending_flr[QED_VF_ARRAY_LENGTH]; 237 238 /* Allocate message address continuosuly and split to each VF */ 239 void *mbx_msg_virt_addr; 240 dma_addr_t mbx_msg_phys_addr; 241 u32 mbx_msg_size; 242 void *mbx_reply_virt_addr; 243 dma_addr_t mbx_reply_phys_addr; 244 u32 mbx_reply_size; 245 void *p_bulletins; 246 dma_addr_t bulletins_phys; 247 u32 bulletins_size; 248 }; 249 250 enum qed_iov_wq_flag { 251 QED_IOV_WQ_MSG_FLAG, 252 QED_IOV_WQ_SET_UNICAST_FILTER_FLAG, 253 QED_IOV_WQ_BULLETIN_UPDATE_FLAG, 254 QED_IOV_WQ_STOP_WQ_FLAG, 255 QED_IOV_WQ_FLR_FLAG, 256 QED_IOV_WQ_TRUST_FLAG, 257 }; 258 259 #ifdef CONFIG_QED_SRIOV 260 /** 261 * @brief - Given a VF index, return index of next [including that] active VF. 262 * 263 * @param p_hwfn 264 * @param rel_vf_id 265 * 266 * @return MAX_NUM_VFS in case no further active VFs, otherwise index. 267 */ 268 u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id); 269 270 /** 271 * @brief Read sriov related information and allocated resources 272 * reads from configuraiton space, shmem, etc. 273 * 274 * @param p_hwfn 275 * 276 * @return int 277 */ 278 int qed_iov_hw_info(struct qed_hwfn *p_hwfn); 279 280 /** 281 * @brief qed_add_tlv - place a given tlv on the tlv buffer at next offset 282 * 283 * @param p_hwfn 284 * @param p_iov 285 * @param type 286 * @param length 287 * 288 * @return pointer to the newly placed tlv 289 */ 290 void *qed_add_tlv(struct qed_hwfn *p_hwfn, u8 **offset, u16 type, u16 length); 291 292 /** 293 * @brief list the types and lengths of the tlvs on the buffer 294 * 295 * @param p_hwfn 296 * @param tlvs_list 297 */ 298 void qed_dp_tlv_list(struct qed_hwfn *p_hwfn, void *tlvs_list); 299 300 /** 301 * @brief qed_iov_alloc - allocate sriov related resources 302 * 303 * @param p_hwfn 304 * 305 * @return int 306 */ 307 int qed_iov_alloc(struct qed_hwfn *p_hwfn); 308 309 /** 310 * @brief qed_iov_setup - setup sriov related resources 311 * 312 * @param p_hwfn 313 * @param p_ptt 314 */ 315 void qed_iov_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 316 317 /** 318 * @brief qed_iov_free - free sriov related resources 319 * 320 * @param p_hwfn 321 */ 322 void qed_iov_free(struct qed_hwfn *p_hwfn); 323 324 /** 325 * @brief free sriov related memory that was allocated during hw_prepare 326 * 327 * @param cdev 328 */ 329 void qed_iov_free_hw_info(struct qed_dev *cdev); 330 331 /** 332 * @brief qed_sriov_eqe_event - handle async sriov event arrived on eqe. 333 * 334 * @param p_hwfn 335 * @param opcode 336 * @param echo 337 * @param data 338 */ 339 int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, 340 u8 opcode, __le16 echo, union event_ring_data *data); 341 342 /** 343 * @brief Mark structs of vfs that have been FLR-ed. 344 * 345 * @param p_hwfn 346 * @param disabled_vfs - bitmask of all VFs on path that were FLRed 347 * 348 * @return 1 iff one of the PF's vfs got FLRed. 0 otherwise. 349 */ 350 int qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs); 351 352 /** 353 * @brief Search extended TLVs in request/reply buffer. 354 * 355 * @param p_hwfn 356 * @param p_tlvs_list - Pointer to tlvs list 357 * @param req_type - Type of TLV 358 * 359 * @return pointer to tlv type if found, otherwise returns NULL. 360 */ 361 void *qed_iov_search_list_tlvs(struct qed_hwfn *p_hwfn, 362 void *p_tlvs_list, u16 req_type); 363 364 void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first); 365 int qed_iov_wq_start(struct qed_dev *cdev); 366 367 void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag); 368 void qed_vf_start_iov_wq(struct qed_dev *cdev); 369 int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled); 370 void qed_inform_vf_link_state(struct qed_hwfn *hwfn); 371 #else 372 static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, 373 u16 rel_vf_id) 374 { 375 return MAX_NUM_VFS; 376 } 377 378 static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn) 379 { 380 return 0; 381 } 382 383 static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn) 384 { 385 return 0; 386 } 387 388 static inline void qed_iov_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 389 { 390 } 391 392 static inline void qed_iov_free(struct qed_hwfn *p_hwfn) 393 { 394 } 395 396 static inline void qed_iov_free_hw_info(struct qed_dev *cdev) 397 { 398 } 399 400 static inline int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, 401 u8 opcode, 402 __le16 echo, union event_ring_data *data) 403 { 404 return -EINVAL; 405 } 406 407 static inline int qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, 408 u32 *disabled_vfs) 409 { 410 return 0; 411 } 412 413 static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first) 414 { 415 } 416 417 static inline int qed_iov_wq_start(struct qed_dev *cdev) 418 { 419 return 0; 420 } 421 422 static inline void qed_schedule_iov(struct qed_hwfn *hwfn, 423 enum qed_iov_wq_flag flag) 424 { 425 } 426 427 static inline void qed_vf_start_iov_wq(struct qed_dev *cdev) 428 { 429 } 430 431 static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled) 432 { 433 return 0; 434 } 435 436 static inline void qed_inform_vf_link_state(struct qed_hwfn *hwfn) 437 { 438 } 439 #endif 440 441 #define qed_for_each_vf(_p_hwfn, _i) \ 442 for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \ 443 _i < MAX_NUM_VFS; \ 444 _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1)) 445 446 #endif 447