drivers/net/ethernet/intel/i40e/i40e_client.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 #ifndef _I40E_CLIENT_H_
   5 #define _I40E_CLIENT_H_
   6
   7 #define I40E_CLIENT_STR_LENGTH 10
   8
   9 /* Client interface version should be updated anytime there is a change in the
  10  * existing APIs or data structures.
  11  */
  12 #define I40E_CLIENT_VERSION_MAJOR 0
  13 #define I40E_CLIENT_VERSION_MINOR 01
  14 #define I40E_CLIENT_VERSION_BUILD 00
  15 #define I40E_CLIENT_VERSION_STR     \
  16         __stringify(I40E_CLIENT_VERSION_MAJOR) "." \
  17         __stringify(I40E_CLIENT_VERSION_MINOR) "." \
  18         __stringify(I40E_CLIENT_VERSION_BUILD)
  19
  20 struct i40e_client_version {
  21         u8 major;
  22         u8 minor;
  23         u8 build;
  24         u8 rsvd;
  25 };
  26
  27 enum i40e_client_state {
  28         __I40E_CLIENT_NULL,
  29         __I40E_CLIENT_REGISTERED
  30 };
  31
  32 enum i40e_client_instance_state {
  33         __I40E_CLIENT_INSTANCE_NONE,
  34         __I40E_CLIENT_INSTANCE_OPENED,
  35 };
  36
  37 struct i40e_ops;
  38 struct i40e_client;
  39
  40 /* HW does not define a type value for AEQ; only for RX/TX and CEQ.
  41  * In order for us to keep the interface simple, SW will define a
  42  * unique type value for AEQ.
  43  */
  44 #define I40E_QUEUE_TYPE_PE_AEQ  0x80
  45 #define I40E_QUEUE_INVALID_IDX  0xFFFF
  46
  47 struct i40e_qv_info {
  48         u32 v_idx; /* msix_vector */
  49         u16 ceq_idx;
  50         u16 aeq_idx;
  51         u8 itr_idx;
  52 };
  53
  54 struct i40e_qvlist_info {
  55         u32 num_vectors;
  56         struct i40e_qv_info qv_info[1];
  57 };
  58
  59 #define I40E_CLIENT_MSIX_ALL 0xFFFFFFFF
  60
  61 /* set of LAN parameters useful for clients managed by LAN */
  62
  63 /* Struct to hold per priority info */
  64 struct i40e_prio_qos_params {
  65         u16 qs_handle; /* qs handle for prio */
  66         u8 tc; /* TC mapped to prio */
  67         u8 reserved;
  68 };
  69
  70 #define I40E_CLIENT_MAX_USER_PRIORITY        8
  71 /* Struct to hold Client QoS */
  72 struct i40e_qos_params {
  73         struct i40e_prio_qos_params prio_qos[I40E_CLIENT_MAX_USER_PRIORITY];
  74 };
  75
  76 struct i40e_params {
  77         struct i40e_qos_params qos;
  78         u16 mtu;
  79 };
  80
  81 /* Structure to hold Lan device info for a client device */
  82 struct i40e_info {
  83         struct i40e_client_version version;
  84         u8 lanmac[6];
  85         struct net_device *netdev;
  86         struct pci_dev *pcidev;
  87         u8 __iomem *hw_addr;
  88         u8 fid; /* function id, PF id or VF id */
  89 #define I40E_CLIENT_FTYPE_PF 0
  90 #define I40E_CLIENT_FTYPE_VF 1
  91         u8 ftype; /* function type, PF or VF */
  92         void *pf;
  93
  94         /* All L2 params that could change during the life span of the PF
  95          * and needs to be communicated to the client when they change
  96          */
  97         struct i40e_qvlist_info *qvlist_info;
  98         struct i40e_params params;
  99         struct i40e_ops *ops;
 100
 101         u16 msix_count;  /* number of msix vectors*/
 102         /* Array down below will be dynamically allocated based on msix_count */
 103         struct msix_entry *msix_entries;
 104         u16 itr_index; /* Which ITR index the PE driver is suppose to use */
 105         u16 fw_maj_ver;                 /* firmware major version */
 106         u16 fw_min_ver;                 /* firmware minor version */
 107         u32 fw_build;                   /* firmware build number */
 108 };
 109
 110 #define I40E_CLIENT_RESET_LEVEL_PF   1
 111 #define I40E_CLIENT_RESET_LEVEL_CORE 2
 112 #define I40E_CLIENT_VSI_FLAG_TCP_ENABLE  BIT(1)
 113
 114 struct i40e_ops {
 115         /* setup_q_vector_list enables queues with a particular vector */
 116         int (*setup_qvlist)(struct i40e_info *ldev, struct i40e_client *client,
 117                             struct i40e_qvlist_info *qv_info);
 118
 119         int (*virtchnl_send)(struct i40e_info *ldev, struct i40e_client *client,
 120                              u32 vf_id, u8 *msg, u16 len);
 121
 122         /* If the PE Engine is unresponsive, RDMA driver can request a reset.
 123          * The level helps determine the level of reset being requested.
 124          */
 125         void (*request_reset)(struct i40e_info *ldev,
 126                               struct i40e_client *client, u32 level);
 127
 128         /* API for the RDMA driver to set certain VSI flags that control
 129          * PE Engine.
 130          */
 131         int (*update_vsi_ctxt)(struct i40e_info *ldev,
 132                                struct i40e_client *client,
 133                                bool is_vf, u32 vf_id,
 134                                u32 flag, u32 valid_flag);
 135 };
 136
 137 struct i40e_client_ops {
 138         /* Should be called from register_client() or whenever PF is ready
 139          * to create a specific client instance.
 140          */
 141         int (*open)(struct i40e_info *ldev, struct i40e_client *client);
 142
 143         /* Should be called when netdev is unavailable or when unregister
 144          * call comes in. If the close is happenening due to a reset being
 145          * triggered set the reset bit to true.
 146          */
 147         void (*close)(struct i40e_info *ldev, struct i40e_client *client,
 148                       bool reset);
 149
 150         /* called when some l2 managed parameters changes - mtu */
 151         void (*l2_param_change)(struct i40e_info *ldev,
 152                                 struct i40e_client *client,
 153                                 struct i40e_params *params);
 154
 155         int (*virtchnl_receive)(struct i40e_info *ldev,
 156                                 struct i40e_client *client, u32 vf_id,
 157                                 u8 *msg, u16 len);
 158
 159         /* called when a VF is reset by the PF */
 160         void (*vf_reset)(struct i40e_info *ldev,
 161                          struct i40e_client *client, u32 vf_id);
 162
 163         /* called when the number of VFs changes */
 164         void (*vf_enable)(struct i40e_info *ldev,
 165                           struct i40e_client *client, u32 num_vfs);
 166
 167         /* returns true if VF is capable of specified offload */
 168         int (*vf_capable)(struct i40e_info *ldev,
 169                           struct i40e_client *client, u32 vf_id);
 170 };
 171
 172 /* Client device */
 173 struct i40e_client_instance {
 174         struct list_head list;
 175         struct i40e_info lan_info;
 176         struct i40e_client *client;
 177         unsigned long  state;
 178 };
 179
 180 struct i40e_client {
 181         struct list_head list;          /* list of registered clients */
 182         char name[I40E_CLIENT_STR_LENGTH];
 183         struct i40e_client_version version;
 184         unsigned long state;            /* client state */
 185         atomic_t ref_cnt;  /* Count of all the client devices of this kind */
 186         u32 flags;
 187 #define I40E_CLIENT_FLAGS_LAUNCH_ON_PROBE       BIT(0)
 188 #define I40E_TX_FLAGS_NOTIFY_OTHER_EVENTS       BIT(2)
 189         u8 type;
 190 #define I40E_CLIENT_IWARP 0
 191         const struct i40e_client_ops *ops; /* client ops provided by the client */
 192 };
 193
 194 static inline bool i40e_client_is_registered(struct i40e_client *client)
 195 {
 196         return test_bit(__I40E_CLIENT_REGISTERED, &client->state);
 197 }
 198
 199 /* used by clients */
 200 int i40e_register_client(struct i40e_client *client);
 201 int i40e_unregister_client(struct i40e_client *client);
 202
 203 #endif /* _I40E_CLIENT_H_ */