qlogic/qed/qed_sriov.h

0001 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
0002 /* QLogic qed NIC Driver
0003  * Copyright (c) 2015-2017  QLogic Corporation
0004  * Copyright (c) 2019-2020 Marvell International Ltd.
0005  */
0006
0007 #ifndef _QED_SRIOV_H
0008 #define _QED_SRIOV_H
0009 #include <linux/types.h>
0010 #include "qed_vf.h"
0011
0012 #define QED_ETH_VF_NUM_MAC_FILTERS 1
0013 #define QED_ETH_VF_NUM_VLAN_FILTERS 2
0014 #define QED_VF_ARRAY_LENGTH (3)
0015
0016 #ifdef CONFIG_QED_SRIOV
0017 #define IS_VF(cdev)             ((cdev)->b_is_vf)
0018 #define IS_PF(cdev)             (!((cdev)->b_is_vf))
0019 #define IS_PF_SRIOV(p_hwfn)     (!!((p_hwfn)->cdev->p_iov_info))
0020 #else
0021 #define IS_VF(cdev)             (0)
0022 #define IS_PF(cdev)             (1)
0023 #define IS_PF_SRIOV(p_hwfn)     (0)
0024 #endif
0025 #define IS_PF_SRIOV_ALLOC(p_hwfn)       (!!((p_hwfn)->pf_iov_info))
0026
0027 #define QED_MAX_VF_CHAINS_PER_PF 16
0028
0029 #define QED_ETH_MAX_VF_NUM_VLAN_FILTERS \
0030     (MAX_NUM_VFS * QED_ETH_VF_NUM_VLAN_FILTERS)
0031
0032 enum qed_iov_vport_update_flag {
0033     QED_IOV_VP_UPDATE_ACTIVATE,
0034     QED_IOV_VP_UPDATE_VLAN_STRIP,
0035     QED_IOV_VP_UPDATE_TX_SWITCH,
0036     QED_IOV_VP_UPDATE_MCAST,
0037     QED_IOV_VP_UPDATE_ACCEPT_PARAM,
0038     QED_IOV_VP_UPDATE_RSS,
0039     QED_IOV_VP_UPDATE_ACCEPT_ANY_VLAN,
0040     QED_IOV_VP_UPDATE_SGE_TPA,
0041     QED_IOV_VP_UPDATE_MAX,
0042 };
0043
0044 struct qed_public_vf_info {
0045     /* These copies will later be reflected in the bulletin board,
0046      * but this copy should be newer.
0047      */
0048     u8 forced_mac[ETH_ALEN];
0049     u16 forced_vlan;
0050     u8 mac[ETH_ALEN];
0051
0052     /* IFLA_VF_LINK_STATE_<X> */
0053     int link_state;
0054
0055     /* Currently configured Tx rate in MB/sec. 0 if unconfigured */
0056     int tx_rate;
0057
0058     /* Trusted VFs can configure promiscuous mode.
0059      * Also store shadow promisc configuration if needed.
0060      */
0061     bool is_trusted_configured;
0062     bool is_trusted_request;
0063     u8 rx_accept_mode;
0064     u8 tx_accept_mode;
0065     bool accept_any_vlan;
0066 };
0067
0068 struct qed_iov_vf_init_params {
0069     u16 rel_vf_id;
0070
0071     /* Number of requested Queues; Currently, don't support different
0072      * number of Rx/Tx queues.
0073      */
0074
0075     u16 num_queues;
0076
0077     /* Allow the client to choose which qzones to use for Rx/Tx,
0078      * and which queue_base to use for Tx queues on a per-queue basis.
0079      * Notice values should be relative to the PF resources.
0080      */
0081     u16 req_rx_queue[QED_MAX_VF_CHAINS_PER_PF];
0082     u16 req_tx_queue[QED_MAX_VF_CHAINS_PER_PF];
0083 };
0084
0085 /* This struct is part of qed_dev and contains data relevant to all hwfns;
0086  * Initialized only if SR-IOV cpabability is exposed in PCIe config space.
0087  */
0088 struct qed_hw_sriov_info {
0089     int pos;        /* capability position */
0090     int nres;       /* number of resources */
0091     u32 cap;        /* SR-IOV Capabilities */
0092     u16 ctrl;       /* SR-IOV Control */
0093     u16 total_vfs;      /* total VFs associated with the PF */
0094     u16 num_vfs;        /* number of vfs that have been started */
0095     u16 initial_vfs;    /* initial VFs associated with the PF */
0096     u16 nr_virtfn;      /* number of VFs available */
0097     u16 offset;     /* first VF Routing ID offset */
0098     u16 stride;     /* following VF stride */
0099     u16 vf_device_id;   /* VF device id */
0100     u32 pgsz;       /* page size for BAR alignment */
0101     u8 link;        /* Function Dependency Link */
0102
0103     u32 first_vf_in_pf;
0104 };
0105
0106 /* This mailbox is maintained per VF in its PF contains all information
0107  * required for sending / receiving a message.
0108  */
0109 struct qed_iov_vf_mbx {
0110     union vfpf_tlvs *req_virt;
0111     dma_addr_t req_phys;
0112     union pfvf_tlvs *reply_virt;
0113     dma_addr_t reply_phys;
0114
0115     /* Address in VF where a pending message is located */
0116     dma_addr_t pending_req;
0117
0118     /* Message from VF awaits handling */
0119     bool b_pending_msg;
0120
0121     u8 *offset;
0122
0123     /* saved VF request header */
0124     struct vfpf_first_tlv first_tlv;
0125 };
0126
0127 #define QED_IOV_LEGACY_QID_RX (0)
0128 #define QED_IOV_LEGACY_QID_TX (1)
0129 #define QED_IOV_QID_INVALID (0xFE)
0130
0131 struct qed_vf_queue_cid {
0132     bool b_is_tx;
0133     struct qed_queue_cid *p_cid;
0134 };
0135
0136 /* Describes a qzone associated with the VF */
0137 struct qed_vf_queue {
0138     u16 fw_rx_qid;
0139     u16 fw_tx_qid;
0140
0141     struct qed_vf_queue_cid cids[MAX_QUEUES_PER_QZONE];
0142 };
0143
0144 enum vf_state {
0145     VF_FREE = 0,        /* VF ready to be acquired holds no resc */
0146     VF_ACQUIRED,        /* VF, acquired, but not initialized */
0147     VF_ENABLED,     /* VF, Enabled */
0148     VF_RESET,       /* VF, FLR'd, pending cleanup */
0149     VF_STOPPED      /* VF, Stopped */
0150 };
0151
0152 struct qed_vf_vlan_shadow {
0153     bool used;
0154     u16 vid;
0155 };
0156
0157 struct qed_vf_shadow_config {
0158     /* Shadow copy of all guest vlans */
0159     struct qed_vf_vlan_shadow vlans[QED_ETH_VF_NUM_VLAN_FILTERS + 1];
0160
0161     /* Shadow copy of all configured MACs; Empty if forcing MACs */
0162     u8 macs[QED_ETH_VF_NUM_MAC_FILTERS][ETH_ALEN];
0163     u8 inner_vlan_removal;
0164 };
0165
0166 /* PFs maintain an array of this structure, per VF */
0167 struct qed_vf_info {
0168     struct qed_iov_vf_mbx vf_mbx;
0169     enum vf_state state;
0170     bool b_init;
0171     bool b_malicious;
0172     u8 to_disable;
0173
0174     struct qed_bulletin bulletin;
0175     dma_addr_t vf_bulletin;
0176
0177     /* PF saves a copy of the last VF acquire message */
0178     struct vfpf_acquire_tlv acquire;
0179
0180     u32 concrete_fid;
0181     u16 opaque_fid;
0182     u16 mtu;
0183
0184     u8 vport_id;
0185     u8 relative_vf_id;
0186     u8 abs_vf_id;
0187 #define QED_VF_ABS_ID(p_hwfn, p_vf) (QED_PATH_ID(p_hwfn) ?            \
0188                      (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \
0189                      (p_vf)->abs_vf_id)
0190
0191     u8 vport_instance;
0192     u8 num_rxqs;
0193     u8 num_txqs;
0194
0195     u16 rx_coal;
0196     u16 tx_coal;
0197
0198     u8 num_sbs;
0199
0200     u8 num_mac_filters;
0201     u8 num_vlan_filters;
0202
0203     struct qed_vf_queue vf_queues[QED_MAX_VF_CHAINS_PER_PF];
0204     u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF];
0205     u8 num_active_rxqs;
0206     struct qed_public_vf_info p_vf_info;
0207     bool spoof_chk;
0208     bool req_spoofchk_val;
0209
0210     /* Stores the configuration requested by VF */
0211     struct qed_vf_shadow_config shadow_config;
0212
0213     /* A bitfield using bulletin's valid-map bits, used to indicate
0214      * which of the bulletin board features have been configured.
0215      */
0216     u64 configured_features;
0217 #define QED_IOV_CONFIGURED_FEATURES_MASK        ((1 << MAC_ADDR_FORCED) | \
0218                          (1 << VLAN_ADDR_FORCED))
0219 };
0220
0221 /* This structure is part of qed_hwfn and used only for PFs that have sriov
0222  * capability enabled.
0223  */
0224 struct qed_pf_iov {
0225     struct qed_vf_info vfs_array[MAX_NUM_VFS];
0226     u64 pending_flr[QED_VF_ARRAY_LENGTH];
0227
0228     /* Allocate message address continuosuly and split to each VF */
0229     void *mbx_msg_virt_addr;
0230     dma_addr_t mbx_msg_phys_addr;
0231     u32 mbx_msg_size;
0232     void *mbx_reply_virt_addr;
0233     dma_addr_t mbx_reply_phys_addr;
0234     u32 mbx_reply_size;
0235     void *p_bulletins;
0236     dma_addr_t bulletins_phys;
0237     u32 bulletins_size;
0238 };
0239
0240 enum qed_iov_wq_flag {
0241     QED_IOV_WQ_MSG_FLAG,
0242     QED_IOV_WQ_SET_UNICAST_FILTER_FLAG,
0243     QED_IOV_WQ_BULLETIN_UPDATE_FLAG,
0244     QED_IOV_WQ_STOP_WQ_FLAG,
0245     QED_IOV_WQ_FLR_FLAG,
0246     QED_IOV_WQ_TRUST_FLAG,
0247     QED_IOV_WQ_VF_FORCE_LINK_QUERY_FLAG,
0248 };
0249
0250 extern const struct qed_iov_hv_ops qed_iov_ops_pass;
0251
0252 #ifdef CONFIG_QED_SRIOV
0253 /**
0254  * qed_iov_is_valid_vfid(): Check if given VF ID @vfid is valid
0255  *                          w.r.t. @b_enabled_only value
0256  *                          if b_enabled_only = true - only enabled
0257  *                          VF id is valid.
0258  *                          else any VF id less than max_vfs is valid.
0259  *
0260  * @p_hwfn: HW device data.
0261  * @rel_vf_id: Relative VF ID.
0262  * @b_enabled_only: consider only enabled VF.
0263  * @b_non_malicious: true iff we want to validate vf isn't malicious.
0264  *
0265  * Return: bool - true for valid VF ID
0266  */
0267 bool qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn,
0268                int rel_vf_id,
0269                bool b_enabled_only, bool b_non_malicious);
0270
0271 /**
0272  * qed_iov_get_next_active_vf(): Given a VF index, return index of
0273  *                               next [including that] active VF.
0274  *
0275  * @p_hwfn: HW device data.
0276  * @rel_vf_id: VF ID.
0277  *
0278  * Return: MAX_NUM_VFS in case no further active VFs, otherwise index.
0279  */
0280 u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id);
0281
0282 void qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn,
0283                     int vfid, u16 vxlan_port, u16 geneve_port);
0284
0285 /**
0286  * qed_iov_hw_info(): Read sriov related information and allocated resources
0287  *                    reads from configuration space, shmem, etc.
0288  *
0289  * @p_hwfn: HW device data.
0290  *
0291  * Return: Int.
0292  */
0293 int qed_iov_hw_info(struct qed_hwfn *p_hwfn);
0294
0295 /**
0296  * qed_add_tlv(): place a given tlv on the tlv buffer at next offset
0297  *
0298  * @p_hwfn: HW device data.
0299  * @offset: offset.
0300  * @type: Type
0301  * @length: Length.
0302  *
0303  * Return: pointer to the newly placed tlv
0304  */
0305 void *qed_add_tlv(struct qed_hwfn *p_hwfn, u8 **offset, u16 type, u16 length);
0306
0307 /**
0308  * qed_dp_tlv_list(): list the types and lengths of the tlvs on the buffer
0309  *
0310  * @p_hwfn: HW device data.
0311  * @tlvs_list: Tlvs_list.
0312  *
0313  * Return: Void.
0314  */
0315 void qed_dp_tlv_list(struct qed_hwfn *p_hwfn, void *tlvs_list);
0316
0317 /**
0318  * qed_sriov_vfpf_malicious(): Handle malicious VF/PF.
0319  *
0320  * @p_hwfn: HW device data.
0321  * @p_data: Pointer to data.
0322  *
0323  * Return: Void.
0324  */
0325 void qed_sriov_vfpf_malicious(struct qed_hwfn *p_hwfn,
0326                   struct fw_err_data *p_data);
0327
0328 /**
0329  * qed_sriov_eqe_event(): Callback for SRIOV events.
0330  *
0331  * @p_hwfn: HW device data.
0332  * @opcode: Opcode.
0333  * @echo: Echo.
0334  * @data: data
0335  * @fw_return_code: FW return code.
0336  *
0337  * Return: Int.
0338  */
0339 int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, u8 opcode, __le16 echo,
0340             union event_ring_data *data, u8  fw_return_code);
0341
0342 /**
0343  * qed_iov_alloc(): allocate sriov related resources
0344  *
0345  * @p_hwfn: HW device data.
0346  *
0347  * Return: Int.
0348  */
0349 int qed_iov_alloc(struct qed_hwfn *p_hwfn);
0350
0351 /**
0352  * qed_iov_setup(): setup sriov related resources
0353  *
0354  * @p_hwfn: HW device data.
0355  *
0356  * Return: Void.
0357  */
0358 void qed_iov_setup(struct qed_hwfn *p_hwfn);
0359
0360 /**
0361  * qed_iov_free(): free sriov related resources
0362  *
0363  * @p_hwfn: HW device data.
0364  *
0365  * Return: Void.
0366  */
0367 void qed_iov_free(struct qed_hwfn *p_hwfn);
0368
0369 /**
0370  * qed_iov_free_hw_info(): free sriov related memory that was
0371  *                          allocated during hw_prepare
0372  *
0373  * @cdev: Qed dev pointer.
0374  *
0375  * Return: Void.
0376  */
0377 void qed_iov_free_hw_info(struct qed_dev *cdev);
0378
0379 /**
0380  * qed_iov_mark_vf_flr(): Mark structs of vfs that have been FLR-ed.
0381  *
0382  * @p_hwfn: HW device data.
0383  * @disabled_vfs: bitmask of all VFs on path that were FLRed
0384  *
0385  * Return: true iff one of the PF's vfs got FLRed. false otherwise.
0386  */
0387 bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs);
0388
0389 /**
0390  * qed_iov_search_list_tlvs(): Search extended TLVs in request/reply buffer.
0391  *
0392  * @p_hwfn: HW device data.
0393  * @p_tlvs_list: Pointer to tlvs list
0394  * @req_type: Type of TLV
0395  *
0396  * Return: pointer to tlv type if found, otherwise returns NULL.
0397  */
0398 void *qed_iov_search_list_tlvs(struct qed_hwfn *p_hwfn,
0399                    void *p_tlvs_list, u16 req_type);
0400
0401 void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first);
0402 int qed_iov_wq_start(struct qed_dev *cdev);
0403
0404 void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag);
0405 void qed_vf_start_iov_wq(struct qed_dev *cdev);
0406 int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled);
0407 void qed_inform_vf_link_state(struct qed_hwfn *hwfn);
0408 #else
0409 static inline bool
0410 qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn,
0411               int rel_vf_id, bool b_enabled_only, bool b_non_malicious)
0412 {
0413     return false;
0414 }
0415
0416 static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn,
0417                          u16 rel_vf_id)
0418 {
0419     return MAX_NUM_VFS;
0420 }
0421
0422 static inline void
0423 qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, int vfid,
0424                    u16 vxlan_port, u16 geneve_port)
0425 {
0426 }
0427
0428 static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn)
0429 {
0430     return 0;
0431 }
0432
0433 static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn)
0434 {
0435     return 0;
0436 }
0437
0438 static inline void qed_iov_setup(struct qed_hwfn *p_hwfn)
0439 {
0440 }
0441
0442 static inline void qed_iov_free(struct qed_hwfn *p_hwfn)
0443 {
0444 }
0445
0446 static inline void qed_iov_free_hw_info(struct qed_dev *cdev)
0447 {
0448 }
0449
0450 static inline bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn,
0451                        u32 *disabled_vfs)
0452 {
0453     return false;
0454 }
0455
0456 static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first)
0457 {
0458 }
0459
0460 static inline int qed_iov_wq_start(struct qed_dev *cdev)
0461 {
0462     return 0;
0463 }
0464
0465 static inline void qed_schedule_iov(struct qed_hwfn *hwfn,
0466                     enum qed_iov_wq_flag flag)
0467 {
0468 }
0469
0470 static inline void qed_vf_start_iov_wq(struct qed_dev *cdev)
0471 {
0472 }
0473
0474 static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled)
0475 {
0476     return 0;
0477 }
0478
0479 static inline void qed_inform_vf_link_state(struct qed_hwfn *hwfn)
0480 {
0481 }
0482
0483 static inline void qed_sriov_vfpf_malicious(struct qed_hwfn *p_hwfn,
0484                         struct fw_err_data *p_data)
0485 {
0486 }
0487
0488 static inline int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, u8 opcode,
0489                       __le16 echo, union event_ring_data *data,
0490                       u8  fw_return_code)
0491 {
0492     return 0;
0493 }
0494 #endif
0495
0496 #define qed_for_each_vf(_p_hwfn, _i)              \
0497     for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \
0498          _i < MAX_NUM_VFS;                \
0499          _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1))
0500
0501 #endif