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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #ifndef _I40E_CLIENT_H_
  28 #define _I40E_CLIENT_H_
  29
  30 #define I40E_CLIENT_STR_LENGTH 10
  31
  32 /* Client interface version should be updated anytime there is a change in the
  33  * existing APIs or data structures.
  34  */
  35 #define I40E_CLIENT_VERSION_MAJOR 0
  36 #define I40E_CLIENT_VERSION_MINOR 01
  37 #define I40E_CLIENT_VERSION_BUILD 00
  38 #define I40E_CLIENT_VERSION_STR     \
  39         __stringify(I40E_CLIENT_VERSION_MAJOR) "." \
  40         __stringify(I40E_CLIENT_VERSION_MINOR) "." \
  41         __stringify(I40E_CLIENT_VERSION_BUILD)
  42
  43 struct i40e_client_version {
  44         u8 major;
  45         u8 minor;
  46         u8 build;
  47         u8 rsvd;
  48 };
  49
  50 enum i40e_client_state {
  51         __I40E_CLIENT_NULL,
  52         __I40E_CLIENT_REGISTERED
  53 };
  54
  55 enum i40e_client_instance_state {
  56         __I40E_CLIENT_INSTANCE_NONE,
  57         __I40E_CLIENT_INSTANCE_OPENED,
  58 };
  59
  60 struct i40e_ops;
  61 struct i40e_client;
  62
  63 /* HW does not define a type value for AEQ; only for RX/TX and CEQ.
  64  * In order for us to keep the interface simple, SW will define a
  65  * unique type value for AEQ.
  66  */
  67 #define I40E_QUEUE_TYPE_PE_AEQ  0x80
  68 #define I40E_QUEUE_INVALID_IDX  0xFFFF
  69
  70 struct i40e_qv_info {
  71         u32 v_idx; /* msix_vector */
  72         u16 ceq_idx;
  73         u16 aeq_idx;
  74         u8 itr_idx;
  75 };
  76
  77 struct i40e_qvlist_info {
  78         u32 num_vectors;
  79         struct i40e_qv_info qv_info[1];
  80 };
  81
  82 #define I40E_CLIENT_MSIX_ALL 0xFFFFFFFF
  83
  84 /* set of LAN parameters useful for clients managed by LAN */
  85
  86 /* Struct to hold per priority info */
  87 struct i40e_prio_qos_params {
  88         u16 qs_handle; /* qs handle for prio */
  89         u8 tc; /* TC mapped to prio */
  90         u8 reserved;
  91 };
  92
  93 #define I40E_CLIENT_MAX_USER_PRIORITY        8
  94 /* Struct to hold Client QoS */
  95 struct i40e_qos_params {
  96         struct i40e_prio_qos_params prio_qos[I40E_CLIENT_MAX_USER_PRIORITY];
  97 };
  98
  99 struct i40e_params {
 100         struct i40e_qos_params qos;
 101         u16 mtu;
 102 };
 103
 104 /* Structure to hold Lan device info for a client device */
 105 struct i40e_info {
 106         struct i40e_client_version version;
 107         u8 lanmac[6];
 108         struct net_device *netdev;
 109         struct pci_dev *pcidev;
 110         u8 __iomem *hw_addr;
 111         u8 fid; /* function id, PF id or VF id */
 112 #define I40E_CLIENT_FTYPE_PF 0
 113 #define I40E_CLIENT_FTYPE_VF 1
 114         u8 ftype; /* function type, PF or VF */
 115         void *pf;
 116
 117         /* All L2 params that could change during the life span of the PF
 118          * and needs to be communicated to the client when they change
 119          */
 120         struct i40e_qvlist_info *qvlist_info;
 121         struct i40e_params params;
 122         struct i40e_ops *ops;
 123
 124         u16 msix_count;  /* number of msix vectors*/
 125         /* Array down below will be dynamically allocated based on msix_count */
 126         struct msix_entry *msix_entries;
 127         u16 itr_index; /* Which ITR index the PE driver is suppose to use */
 128         u16 fw_maj_ver;                 /* firmware major version */
 129         u16 fw_min_ver;                 /* firmware minor version */
 130         u32 fw_build;                   /* firmware build number */
 131 };
 132
 133 #define I40E_CLIENT_RESET_LEVEL_PF   1
 134 #define I40E_CLIENT_RESET_LEVEL_CORE 2
 135 #define I40E_CLIENT_VSI_FLAG_TCP_ENABLE  BIT(1)
 136
 137 struct i40e_ops {
 138         /* setup_q_vector_list enables queues with a particular vector */
 139         int (*setup_qvlist)(struct i40e_info *ldev, struct i40e_client *client,
 140                             struct i40e_qvlist_info *qv_info);
 141
 142         int (*virtchnl_send)(struct i40e_info *ldev, struct i40e_client *client,
 143                              u32 vf_id, u8 *msg, u16 len);
 144
 145         /* If the PE Engine is unresponsive, RDMA driver can request a reset.
 146          * The level helps determine the level of reset being requested.
 147          */
 148         void (*request_reset)(struct i40e_info *ldev,
 149                               struct i40e_client *client, u32 level);
 150
 151         /* API for the RDMA driver to set certain VSI flags that control
 152          * PE Engine.
 153          */
 154         int (*update_vsi_ctxt)(struct i40e_info *ldev,
 155                                struct i40e_client *client,
 156                                bool is_vf, u32 vf_id,
 157                                u32 flag, u32 valid_flag);
 158 };
 159
 160 struct i40e_client_ops {
 161         /* Should be called from register_client() or whenever PF is ready
 162          * to create a specific client instance.
 163          */
 164         int (*open)(struct i40e_info *ldev, struct i40e_client *client);
 165
 166         /* Should be called when netdev is unavailable or when unregister
 167          * call comes in. If the close is happenening due to a reset being
 168          * triggered set the reset bit to true.
 169          */
 170         void (*close)(struct i40e_info *ldev, struct i40e_client *client,
 171                       bool reset);
 172
 173         /* called when some l2 managed parameters changes - mtu */
 174         void (*l2_param_change)(struct i40e_info *ldev,
 175                                 struct i40e_client *client,
 176                                 struct i40e_params *params);
 177
 178         int (*virtchnl_receive)(struct i40e_info *ldev,
 179                                 struct i40e_client *client, u32 vf_id,
 180                                 u8 *msg, u16 len);
 181
 182         /* called when a VF is reset by the PF */
 183         void (*vf_reset)(struct i40e_info *ldev,
 184                          struct i40e_client *client, u32 vf_id);
 185
 186         /* called when the number of VFs changes */
 187         void (*vf_enable)(struct i40e_info *ldev,
 188                           struct i40e_client *client, u32 num_vfs);
 189
 190         /* returns true if VF is capable of specified offload */
 191         int (*vf_capable)(struct i40e_info *ldev,
 192                           struct i40e_client *client, u32 vf_id);
 193 };
 194
 195 /* Client device */
 196 struct i40e_client_instance {
 197         struct list_head list;
 198         struct i40e_info lan_info;
 199         struct i40e_client *client;
 200         unsigned long  state;
 201 };
 202
 203 struct i40e_client {
 204         struct list_head list;          /* list of registered clients */
 205         char name[I40E_CLIENT_STR_LENGTH];
 206         struct i40e_client_version version;
 207         unsigned long state;            /* client state */
 208         atomic_t ref_cnt;  /* Count of all the client devices of this kind */
 209         u32 flags;
 210 #define I40E_CLIENT_FLAGS_LAUNCH_ON_PROBE       BIT(0)
 211 #define I40E_TX_FLAGS_NOTIFY_OTHER_EVENTS       BIT(2)
 212         u8 type;
 213 #define I40E_CLIENT_IWARP 0
 214         const struct i40e_client_ops *ops; /* client ops provided by the client */
 215 };
 216
 217 static inline bool i40e_client_is_registered(struct i40e_client *client)
 218 {
 219         return test_bit(__I40E_CLIENT_REGISTERED, &client->state);
 220 }
 221
 222 /* used by clients */
 223 int i40e_register_client(struct i40e_client *client);
 224 int i40e_unregister_client(struct i40e_client *client);
 225
 226 #endif /* _I40E_CLIENT_H_ */