drivers/net/ethernet/qlogic/qed/qed_sriov.h

   1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
   2 /* QLogic qed NIC Driver
   3  * Copyright (c) 2015-2017  QLogic Corporation
   4  * Copyright (c) 2019-2020 Marvell International Ltd.
   5  */
   6
   7 #ifndef _QED_SRIOV_H
   8 #define _QED_SRIOV_H
   9 #include <linux/types.h>
  10 #include "qed_vf.h"
  11
  12 #define QED_ETH_VF_NUM_MAC_FILTERS 1
  13 #define QED_ETH_VF_NUM_VLAN_FILTERS 2
  14 #define QED_VF_ARRAY_LENGTH (3)
  15
  16 #ifdef CONFIG_QED_SRIOV
  17 #define IS_VF(cdev)             ((cdev)->b_is_vf)
  18 #define IS_PF(cdev)             (!((cdev)->b_is_vf))
  19 #define IS_PF_SRIOV(p_hwfn)     (!!((p_hwfn)->cdev->p_iov_info))
  20 #else
  21 #define IS_VF(cdev)             (0)
  22 #define IS_PF(cdev)             (1)
  23 #define IS_PF_SRIOV(p_hwfn)     (0)
  24 #endif
  25 #define IS_PF_SRIOV_ALLOC(p_hwfn)       (!!((p_hwfn)->pf_iov_info))
  26
  27 #define QED_MAX_VF_CHAINS_PER_PF 16
  28
  29 #define QED_ETH_MAX_VF_NUM_VLAN_FILTERS \
  30         (MAX_NUM_VFS * QED_ETH_VF_NUM_VLAN_FILTERS)
  31
  32 enum qed_iov_vport_update_flag {
  33         QED_IOV_VP_UPDATE_ACTIVATE,
  34         QED_IOV_VP_UPDATE_VLAN_STRIP,
  35         QED_IOV_VP_UPDATE_TX_SWITCH,
  36         QED_IOV_VP_UPDATE_MCAST,
  37         QED_IOV_VP_UPDATE_ACCEPT_PARAM,
  38         QED_IOV_VP_UPDATE_RSS,
  39         QED_IOV_VP_UPDATE_ACCEPT_ANY_VLAN,
  40         QED_IOV_VP_UPDATE_SGE_TPA,
  41         QED_IOV_VP_UPDATE_MAX,
  42 };
  43
  44 struct qed_public_vf_info {
  45         /* These copies will later be reflected in the bulletin board,
  46          * but this copy should be newer.
  47          */
  48         u8 forced_mac[ETH_ALEN];
  49         u16 forced_vlan;
  50         u8 mac[ETH_ALEN];
  51
  52         /* IFLA_VF_LINK_STATE_<X> */
  53         int link_state;
  54
  55         /* Currently configured Tx rate in MB/sec. 0 if unconfigured */
  56         int tx_rate;
  57
  58         /* Trusted VFs can configure promiscuous mode.
  59          * Also store shadow promisc configuration if needed.
  60          */
  61         bool is_trusted_configured;
  62         bool is_trusted_request;
  63         u8 rx_accept_mode;
  64         u8 tx_accept_mode;
  65         bool accept_any_vlan;
  66 };
  67
  68 struct qed_iov_vf_init_params {
  69         u16 rel_vf_id;
  70
  71         /* Number of requested Queues; Currently, don't support different
  72          * number of Rx/Tx queues.
  73          */
  74
  75         u16 num_queues;
  76
  77         /* Allow the client to choose which qzones to use for Rx/Tx,
  78          * and which queue_base to use for Tx queues on a per-queue basis.
  79          * Notice values should be relative to the PF resources.
  80          */
  81         u16 req_rx_queue[QED_MAX_VF_CHAINS_PER_PF];
  82         u16 req_tx_queue[QED_MAX_VF_CHAINS_PER_PF];
  83 };
  84
  85 /* This struct is part of qed_dev and contains data relevant to all hwfns;
  86  * Initialized only if SR-IOV cpabability is exposed in PCIe config space.
  87  */
  88 struct qed_hw_sriov_info {
  89         int pos;                /* capability position */
  90         int nres;               /* number of resources */
  91         u32 cap;                /* SR-IOV Capabilities */
  92         u16 ctrl;               /* SR-IOV Control */
  93         u16 total_vfs;          /* total VFs associated with the PF */
  94         u16 num_vfs;            /* number of vfs that have been started */
  95         u16 initial_vfs;        /* initial VFs associated with the PF */
  96         u16 nr_virtfn;          /* number of VFs available */
  97         u16 offset;             /* first VF Routing ID offset */
  98         u16 stride;             /* following VF stride */
  99         u16 vf_device_id;       /* VF device id */
 100         u32 pgsz;               /* page size for BAR alignment */
 101         u8 link;                /* Function Dependency Link */
 102
 103         u32 first_vf_in_pf;
 104 };
 105
 106 /* This mailbox is maintained per VF in its PF contains all information
 107  * required for sending / receiving a message.
 108  */
 109 struct qed_iov_vf_mbx {
 110         union vfpf_tlvs *req_virt;
 111         dma_addr_t req_phys;
 112         union pfvf_tlvs *reply_virt;
 113         dma_addr_t reply_phys;
 114
 115         /* Address in VF where a pending message is located */
 116         dma_addr_t pending_req;
 117
 118         /* Message from VF awaits handling */
 119         bool b_pending_msg;
 120
 121         u8 *offset;
 122
 123         /* saved VF request header */
 124         struct vfpf_first_tlv first_tlv;
 125 };
 126
 127 #define QED_IOV_LEGACY_QID_RX (0)
 128 #define QED_IOV_LEGACY_QID_TX (1)
 129 #define QED_IOV_QID_INVALID (0xFE)
 130
 131 struct qed_vf_queue_cid {
 132         bool b_is_tx;
 133         struct qed_queue_cid *p_cid;
 134 };
 135
 136 /* Describes a qzone associated with the VF */
 137 struct qed_vf_queue {
 138         u16 fw_rx_qid;
 139         u16 fw_tx_qid;
 140
 141         struct qed_vf_queue_cid cids[MAX_QUEUES_PER_QZONE];
 142 };
 143
 144 enum vf_state {
 145         VF_FREE = 0,            /* VF ready to be acquired holds no resc */
 146         VF_ACQUIRED,            /* VF, acquired, but not initialized */
 147         VF_ENABLED,             /* VF, Enabled */
 148         VF_RESET,               /* VF, FLR'd, pending cleanup */
 149         VF_STOPPED              /* VF, Stopped */
 150 };
 151
 152 struct qed_vf_vlan_shadow {
 153         bool used;
 154         u16 vid;
 155 };
 156
 157 struct qed_vf_shadow_config {
 158         /* Shadow copy of all guest vlans */
 159         struct qed_vf_vlan_shadow vlans[QED_ETH_VF_NUM_VLAN_FILTERS + 1];
 160
 161         /* Shadow copy of all configured MACs; Empty if forcing MACs */
 162         u8 macs[QED_ETH_VF_NUM_MAC_FILTERS][ETH_ALEN];
 163         u8 inner_vlan_removal;
 164 };
 165
 166 /* PFs maintain an array of this structure, per VF */
 167 struct qed_vf_info {
 168         struct qed_iov_vf_mbx vf_mbx;
 169         enum vf_state state;
 170         bool b_init;
 171         bool b_malicious;
 172         u8 to_disable;
 173
 174         struct qed_bulletin bulletin;
 175         dma_addr_t vf_bulletin;
 176
 177         /* PF saves a copy of the last VF acquire message */
 178         struct vfpf_acquire_tlv acquire;
 179
 180         u32 concrete_fid;
 181         u16 opaque_fid;
 182         u16 mtu;
 183
 184         u8 vport_id;
 185         u8 relative_vf_id;
 186         u8 abs_vf_id;
 187 #define QED_VF_ABS_ID(p_hwfn, p_vf)     (QED_PATH_ID(p_hwfn) ?                \
 188                                          (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \
 189                                          (p_vf)->abs_vf_id)
 190
 191         u8 vport_instance;
 192         u8 num_rxqs;
 193         u8 num_txqs;
 194
 195         u16 rx_coal;
 196         u16 tx_coal;
 197
 198         u8 num_sbs;
 199
 200         u8 num_mac_filters;
 201         u8 num_vlan_filters;
 202
 203         struct qed_vf_queue vf_queues[QED_MAX_VF_CHAINS_PER_PF];
 204         u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF];
 205         u8 num_active_rxqs;
 206         struct qed_public_vf_info p_vf_info;
 207         bool spoof_chk;
 208         bool req_spoofchk_val;
 209
 210         /* Stores the configuration requested by VF */
 211         struct qed_vf_shadow_config shadow_config;
 212
 213         /* A bitfield using bulletin's valid-map bits, used to indicate
 214          * which of the bulletin board features have been configured.
 215          */
 216         u64 configured_features;
 217 #define QED_IOV_CONFIGURED_FEATURES_MASK        ((1 << MAC_ADDR_FORCED) | \
 218                                                  (1 << VLAN_ADDR_FORCED))
 219 };
 220
 221 /* This structure is part of qed_hwfn and used only for PFs that have sriov
 222  * capability enabled.
 223  */
 224 struct qed_pf_iov {
 225         struct qed_vf_info vfs_array[MAX_NUM_VFS];
 226         u64 pending_flr[QED_VF_ARRAY_LENGTH];
 227
 228         /* Allocate message address continuosuly and split to each VF */
 229         void *mbx_msg_virt_addr;
 230         dma_addr_t mbx_msg_phys_addr;
 231         u32 mbx_msg_size;
 232         void *mbx_reply_virt_addr;
 233         dma_addr_t mbx_reply_phys_addr;
 234         u32 mbx_reply_size;
 235         void *p_bulletins;
 236         dma_addr_t bulletins_phys;
 237         u32 bulletins_size;
 238 };
 239
 240 enum qed_iov_wq_flag {
 241         QED_IOV_WQ_MSG_FLAG,
 242         QED_IOV_WQ_SET_UNICAST_FILTER_FLAG,
 243         QED_IOV_WQ_BULLETIN_UPDATE_FLAG,
 244         QED_IOV_WQ_STOP_WQ_FLAG,
 245         QED_IOV_WQ_FLR_FLAG,
 246         QED_IOV_WQ_TRUST_FLAG,
 247         QED_IOV_WQ_VF_FORCE_LINK_QUERY_FLAG,
 248 };
 249
 250 extern const struct qed_iov_hv_ops qed_iov_ops_pass;
 251
 252 #ifdef CONFIG_QED_SRIOV
 253 /**
 254  * qed_iov_is_valid_vfid(): Check if given VF ID @vfid is valid
 255  *                          w.r.t. @b_enabled_only value
 256  *                          if b_enabled_only = true - only enabled
 257  *                          VF id is valid.
 258  *                          else any VF id less than max_vfs is valid.
 259  *
 260  * @p_hwfn: HW device data.
 261  * @rel_vf_id: Relative VF ID.
 262  * @b_enabled_only: consider only enabled VF.
 263  * @b_non_malicious: true iff we want to validate vf isn't malicious.
 264  *
 265  * Return: bool - true for valid VF ID
 266  */
 267 bool qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn,
 268                            int rel_vf_id,
 269                            bool b_enabled_only, bool b_non_malicious);
 270
 271 /**
 272  * qed_iov_get_next_active_vf(): Given a VF index, return index of
 273  *                               next [including that] active VF.
 274  *
 275  * @p_hwfn: HW device data.
 276  * @rel_vf_id: VF ID.
 277  *
 278  * Return: MAX_NUM_VFS in case no further active VFs, otherwise index.
 279  */
 280 u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id);
 281
 282 void qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn,
 283                                     int vfid, u16 vxlan_port, u16 geneve_port);
 284
 285 /**
 286  * qed_iov_hw_info(): Read sriov related information and allocated resources
 287  *                    reads from configuration space, shmem, etc.
 288  *
 289  * @p_hwfn: HW device data.
 290  *
 291  * Return: Int.
 292  */
 293 int qed_iov_hw_info(struct qed_hwfn *p_hwfn);
 294
 295 /**
 296  * qed_add_tlv(): place a given tlv on the tlv buffer at next offset
 297  *
 298  * @p_hwfn: HW device data.
 299  * @offset: offset.
 300  * @type: Type
 301  * @length: Length.
 302  *
 303  * Return: pointer to the newly placed tlv
 304  */
 305 void *qed_add_tlv(struct qed_hwfn *p_hwfn, u8 **offset, u16 type, u16 length);
 306
 307 /**
 308  * qed_dp_tlv_list(): list the types and lengths of the tlvs on the buffer
 309  *
 310  * @p_hwfn: HW device data.
 311  * @tlvs_list: Tlvs_list.
 312  *
 313  * Return: Void.
 314  */
 315 void qed_dp_tlv_list(struct qed_hwfn *p_hwfn, void *tlvs_list);
 316
 317 /**
 318  * qed_sriov_vfpf_malicious(): Handle malicious VF/PF.
 319  *
 320  * @p_hwfn: HW device data.
 321  * @p_data: Pointer to data.
 322  *
 323  * Return: Void.
 324  */
 325 void qed_sriov_vfpf_malicious(struct qed_hwfn *p_hwfn,
 326                               struct fw_err_data *p_data);
 327
 328 /**
 329  * qed_sriov_eqe_event(): Callback for SRIOV events.
 330  *
 331  * @p_hwfn: HW device data.
 332  * @opcode: Opcode.
 333  * @echo: Echo.
 334  * @data: data
 335  * @fw_return_code: FW return code.
 336  *
 337  * Return: Int.
 338  */
 339 int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, u8 opcode, __le16 echo,
 340                         union event_ring_data *data, u8  fw_return_code);
 341
 342 /**
 343  * qed_iov_alloc(): allocate sriov related resources
 344  *
 345  * @p_hwfn: HW device data.
 346  *
 347  * Return: Int.
 348  */
 349 int qed_iov_alloc(struct qed_hwfn *p_hwfn);
 350
 351 /**
 352  * qed_iov_setup(): setup sriov related resources
 353  *
 354  * @p_hwfn: HW device data.
 355  *
 356  * Return: Void.
 357  */
 358 void qed_iov_setup(struct qed_hwfn *p_hwfn);
 359
 360 /**
 361  * qed_iov_free(): free sriov related resources
 362  *
 363  * @p_hwfn: HW device data.
 364  *
 365  * Return: Void.
 366  */
 367 void qed_iov_free(struct qed_hwfn *p_hwfn);
 368
 369 /**
 370  * qed_iov_free_hw_info(): free sriov related memory that was
 371  *                          allocated during hw_prepare
 372  *
 373  * @cdev: Qed dev pointer.
 374  *
 375  * Return: Void.
 376  */
 377 void qed_iov_free_hw_info(struct qed_dev *cdev);
 378
 379 /**
 380  * qed_iov_mark_vf_flr(): Mark structs of vfs that have been FLR-ed.
 381  *
 382  * @p_hwfn: HW device data.
 383  * @disabled_vfs: bitmask of all VFs on path that were FLRed
 384  *
 385  * Return: true iff one of the PF's vfs got FLRed. false otherwise.
 386  */
 387 bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs);
 388
 389 /**
 390  * qed_iov_search_list_tlvs(): Search extended TLVs in request/reply buffer.
 391  *
 392  * @p_hwfn: HW device data.
 393  * @p_tlvs_list: Pointer to tlvs list
 394  * @req_type: Type of TLV
 395  *
 396  * Return: pointer to tlv type if found, otherwise returns NULL.
 397  */
 398 void *qed_iov_search_list_tlvs(struct qed_hwfn *p_hwfn,
 399                                void *p_tlvs_list, u16 req_type);
 400
 401 void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first);
 402 int qed_iov_wq_start(struct qed_dev *cdev);
 403
 404 void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag);
 405 void qed_vf_start_iov_wq(struct qed_dev *cdev);
 406 int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled);
 407 void qed_inform_vf_link_state(struct qed_hwfn *hwfn);
 408 #else
 409 static inline bool
 410 qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn,
 411                       int rel_vf_id, bool b_enabled_only, bool b_non_malicious)
 412 {
 413         return false;
 414 }
 415
 416 static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn,
 417                                              u16 rel_vf_id)
 418 {
 419         return MAX_NUM_VFS;
 420 }
 421
 422 static inline void
 423 qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, int vfid,
 424                                u16 vxlan_port, u16 geneve_port)
 425 {
 426 }
 427
 428 static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn)
 429 {
 430         return 0;
 431 }
 432
 433 static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn)
 434 {
 435         return 0;
 436 }
 437
 438 static inline void qed_iov_setup(struct qed_hwfn *p_hwfn)
 439 {
 440 }
 441
 442 static inline void qed_iov_free(struct qed_hwfn *p_hwfn)
 443 {
 444 }
 445
 446 static inline void qed_iov_free_hw_info(struct qed_dev *cdev)
 447 {
 448 }
 449
 450 static inline bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn,
 451                                        u32 *disabled_vfs)
 452 {
 453         return false;
 454 }
 455
 456 static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first)
 457 {
 458 }
 459
 460 static inline int qed_iov_wq_start(struct qed_dev *cdev)
 461 {
 462         return 0;
 463 }
 464
 465 static inline void qed_schedule_iov(struct qed_hwfn *hwfn,
 466                                     enum qed_iov_wq_flag flag)
 467 {
 468 }
 469
 470 static inline void qed_vf_start_iov_wq(struct qed_dev *cdev)
 471 {
 472 }
 473
 474 static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled)
 475 {
 476         return 0;
 477 }
 478
 479 static inline void qed_inform_vf_link_state(struct qed_hwfn *hwfn)
 480 {
 481 }
 482
 483 static inline void qed_sriov_vfpf_malicious(struct qed_hwfn *p_hwfn,
 484                                             struct fw_err_data *p_data)
 485 {
 486 }
 487
 488 static inline int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, u8 opcode,
 489                                       __le16 echo, union event_ring_data *data,
 490                                       u8  fw_return_code)
 491 {
 492         return 0;
 493 }
 494 #endif
 495
 496 #define qed_for_each_vf(_p_hwfn, _i)                      \
 497         for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \
 498              _i < MAX_NUM_VFS;                            \
 499              _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1))
 500
 501 #endif