drivers/net/cnic_if.h

   1 /* cnic_if.h: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2011 Broadcom Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  *
   9  */
  10
  11
  12 #ifndef CNIC_IF_H
  13 #define CNIC_IF_H
  14
  15 #define CNIC_MODULE_VERSION     "2.2.14"
  16 #define CNIC_MODULE_RELDATE     "Mar 30, 2011"
  17
  18 #define CNIC_ULP_RDMA           0
  19 #define CNIC_ULP_ISCSI          1
  20 #define CNIC_ULP_FCOE           2
  21 #define CNIC_ULP_L4             3
  22 #define MAX_CNIC_ULP_TYPE_EXT   3
  23 #define MAX_CNIC_ULP_TYPE       4
  24
  25 struct kwqe {
  26         u32 kwqe_op_flag;
  27
  28 #define KWQE_QID_SHIFT          8
  29 #define KWQE_OPCODE_MASK        0x00ff0000
  30 #define KWQE_OPCODE_SHIFT       16
  31 #define KWQE_OPCODE(x)          ((x & KWQE_OPCODE_MASK) >> KWQE_OPCODE_SHIFT)
  32 #define KWQE_LAYER_MASK                 0x70000000
  33 #define KWQE_LAYER_SHIFT                28
  34 #define KWQE_FLAGS_LAYER_MASK_L2        (2<<28)
  35 #define KWQE_FLAGS_LAYER_MASK_L3        (3<<28)
  36 #define KWQE_FLAGS_LAYER_MASK_L4        (4<<28)
  37 #define KWQE_FLAGS_LAYER_MASK_L5_RDMA   (5<<28)
  38 #define KWQE_FLAGS_LAYER_MASK_L5_ISCSI  (6<<28)
  39 #define KWQE_FLAGS_LAYER_MASK_L5_FCOE   (7<<28)
  40
  41         u32 kwqe_info0;
  42         u32 kwqe_info1;
  43         u32 kwqe_info2;
  44         u32 kwqe_info3;
  45         u32 kwqe_info4;
  46         u32 kwqe_info5;
  47         u32 kwqe_info6;
  48 };
  49
  50 struct kwqe_16 {
  51         u32 kwqe_info0;
  52         u32 kwqe_info1;
  53         u32 kwqe_info2;
  54         u32 kwqe_info3;
  55 };
  56
  57 struct kcqe {
  58         u32 kcqe_info0;
  59         u32 kcqe_info1;
  60         u32 kcqe_info2;
  61         u32 kcqe_info3;
  62         u32 kcqe_info4;
  63         u32 kcqe_info5;
  64         u32 kcqe_info6;
  65         u32 kcqe_op_flag;
  66                 #define KCQE_RAMROD_COMPLETION          (0x1<<27) /* Everest */
  67                 #define KCQE_FLAGS_LAYER_MASK           (0x7<<28)
  68                 #define KCQE_FLAGS_LAYER_MASK_MISC      (0<<28)
  69                 #define KCQE_FLAGS_LAYER_MASK_L2        (2<<28)
  70                 #define KCQE_FLAGS_LAYER_MASK_L3        (3<<28)
  71                 #define KCQE_FLAGS_LAYER_MASK_L4        (4<<28)
  72                 #define KCQE_FLAGS_LAYER_MASK_L5_RDMA   (5<<28)
  73                 #define KCQE_FLAGS_LAYER_MASK_L5_ISCSI  (6<<28)
  74                 #define KCQE_FLAGS_LAYER_MASK_L5_FCOE   (7<<28)
  75                 #define KCQE_FLAGS_NEXT                 (1<<31)
  76                 #define KCQE_FLAGS_OPCODE_MASK          (0xff<<16)
  77                 #define KCQE_FLAGS_OPCODE_SHIFT         (16)
  78                 #define KCQE_OPCODE(op)                 \
  79                 (((op) & KCQE_FLAGS_OPCODE_MASK) >> KCQE_FLAGS_OPCODE_SHIFT)
  80 };
  81
  82 #define MAX_CNIC_CTL_DATA       64
  83 #define MAX_DRV_CTL_DATA        64
  84
  85 #define CNIC_CTL_STOP_CMD               1
  86 #define CNIC_CTL_START_CMD              2
  87 #define CNIC_CTL_COMPLETION_CMD         3
  88 #define CNIC_CTL_STOP_ISCSI_CMD         4
  89
  90 #define DRV_CTL_IO_WR_CMD               0x101
  91 #define DRV_CTL_IO_RD_CMD               0x102
  92 #define DRV_CTL_CTX_WR_CMD              0x103
  93 #define DRV_CTL_CTXTBL_WR_CMD           0x104
  94 #define DRV_CTL_RET_L5_SPQ_CREDIT_CMD   0x105
  95 #define DRV_CTL_START_L2_CMD            0x106
  96 #define DRV_CTL_STOP_L2_CMD             0x107
  97 #define DRV_CTL_RET_L2_SPQ_CREDIT_CMD   0x10c
  98 #define DRV_CTL_ISCSI_STOPPED_CMD       0x10d
  99
 100 struct cnic_ctl_completion {
 101         u32     cid;
 102 };
 103
 104 struct cnic_ctl_info {
 105         int     cmd;
 106         union {
 107                 struct cnic_ctl_completion comp;
 108                 char bytes[MAX_CNIC_CTL_DATA];
 109         } data;
 110 };
 111
 112 struct drv_ctl_spq_credit {
 113         u32     credit_count;
 114 };
 115
 116 struct drv_ctl_io {
 117         u32             cid_addr;
 118         u32             offset;
 119         u32             data;
 120         dma_addr_t      dma_addr;
 121 };
 122
 123 struct drv_ctl_l2_ring {
 124         u32             client_id;
 125         u32             cid;
 126 };
 127
 128 struct drv_ctl_info {
 129         int     cmd;
 130         union {
 131                 struct drv_ctl_spq_credit credit;
 132                 struct drv_ctl_io io;
 133                 struct drv_ctl_l2_ring ring;
 134                 char bytes[MAX_DRV_CTL_DATA];
 135         } data;
 136 };
 137
 138 struct cnic_ops {
 139         struct module   *cnic_owner;
 140         /* Calls to these functions are protected by RCU.  When
 141          * unregistering, we wait for any calls to complete before
 142          * continuing.
 143          */
 144         int             (*cnic_handler)(void *, void *);
 145         int             (*cnic_ctl)(void *, struct cnic_ctl_info *);
 146 };
 147
 148 #define MAX_CNIC_VEC    8
 149
 150 struct cnic_irq {
 151         unsigned int    vector;
 152         void            *status_blk;
 153         u32             status_blk_num;
 154         u32             status_blk_num2;
 155         u32             irq_flags;
 156 #define CNIC_IRQ_FL_MSIX                0x00000001
 157 };
 158
 159 struct cnic_eth_dev {
 160         struct module   *drv_owner;
 161         u32             drv_state;
 162 #define CNIC_DRV_STATE_REGD             0x00000001
 163 #define CNIC_DRV_STATE_USING_MSIX       0x00000002
 164 #define CNIC_DRV_STATE_NO_ISCSI_OOO     0x00000004
 165 #define CNIC_DRV_STATE_NO_ISCSI         0x00000008
 166 #define CNIC_DRV_STATE_NO_FCOE          0x00000010
 167         u32             chip_id;
 168         u32             max_kwqe_pending;
 169         struct pci_dev  *pdev;
 170         void __iomem    *io_base;
 171         void __iomem    *io_base2;
 172         void            *iro_arr;
 173
 174         u32             ctx_tbl_offset;
 175         u32             ctx_tbl_len;
 176         int             ctx_blk_size;
 177         u32             starting_cid;
 178         u32             max_iscsi_conn;
 179         u32             max_fcoe_conn;
 180         u32             max_rdma_conn;
 181         u32             fcoe_init_cid;
 182         u16             iscsi_l2_client_id;
 183         u16             iscsi_l2_cid;
 184         u8              iscsi_mac[ETH_ALEN];
 185
 186         int             num_irq;
 187         struct cnic_irq irq_arr[MAX_CNIC_VEC];
 188         int             (*drv_register_cnic)(struct net_device *,
 189                                              struct cnic_ops *, void *);
 190         int             (*drv_unregister_cnic)(struct net_device *);
 191         int             (*drv_submit_kwqes_32)(struct net_device *,
 192                                                struct kwqe *[], u32);
 193         int             (*drv_submit_kwqes_16)(struct net_device *,
 194                                                struct kwqe_16 *[], u32);
 195         int             (*drv_ctl)(struct net_device *, struct drv_ctl_info *);
 196         unsigned long   reserved1[2];
 197 };
 198
 199 struct cnic_sockaddr {
 200         union {
 201                 struct sockaddr_in      v4;
 202                 struct sockaddr_in6     v6;
 203         } local;
 204         union {
 205                 struct sockaddr_in      v4;
 206                 struct sockaddr_in6     v6;
 207         } remote;
 208 };
 209
 210 struct cnic_sock {
 211         struct cnic_dev *dev;
 212         void    *context;
 213         u32     src_ip[4];
 214         u32     dst_ip[4];
 215         u16     src_port;
 216         u16     dst_port;
 217         u16     vlan_id;
 218         unsigned char old_ha[6];
 219         unsigned char ha[6];
 220         u32     mtu;
 221         u32     cid;
 222         u32     l5_cid;
 223         u32     pg_cid;
 224         int     ulp_type;
 225
 226         u32     ka_timeout;
 227         u32     ka_interval;
 228         u8      ka_max_probe_count;
 229         u8      tos;
 230         u8      ttl;
 231         u8      snd_seq_scale;
 232         u32     rcv_buf;
 233         u32     snd_buf;
 234         u32     seed;
 235
 236         unsigned long   tcp_flags;
 237 #define SK_TCP_NO_DELAY_ACK     0x1
 238 #define SK_TCP_KEEP_ALIVE       0x2
 239 #define SK_TCP_NAGLE            0x4
 240 #define SK_TCP_TIMESTAMP        0x8
 241 #define SK_TCP_SACK             0x10
 242 #define SK_TCP_SEG_SCALING      0x20
 243         unsigned long   flags;
 244 #define SK_F_INUSE              0
 245 #define SK_F_OFFLD_COMPLETE     1
 246 #define SK_F_OFFLD_SCHED        2
 247 #define SK_F_PG_OFFLD_COMPLETE  3
 248 #define SK_F_CONNECT_START      4
 249 #define SK_F_IPV6               5
 250 #define SK_F_CLOSING            7
 251
 252         atomic_t ref_count;
 253         u32 state;
 254         struct kwqe kwqe1;
 255         struct kwqe kwqe2;
 256         struct kwqe kwqe3;
 257 };
 258
 259 struct cnic_dev {
 260         struct net_device       *netdev;
 261         struct pci_dev          *pcidev;
 262         void __iomem            *regview;
 263         struct list_head        list;
 264
 265         int (*register_device)(struct cnic_dev *dev, int ulp_type,
 266                                void *ulp_ctx);
 267         int (*unregister_device)(struct cnic_dev *dev, int ulp_type);
 268         int (*submit_kwqes)(struct cnic_dev *dev, struct kwqe *wqes[],
 269                                 u32 num_wqes);
 270         int (*submit_kwqes_16)(struct cnic_dev *dev, struct kwqe_16 *wqes[],
 271                                 u32 num_wqes);
 272
 273         int (*cm_create)(struct cnic_dev *, int, u32, u32, struct cnic_sock **,
 274                          void *);
 275         int (*cm_destroy)(struct cnic_sock *);
 276         int (*cm_connect)(struct cnic_sock *, struct cnic_sockaddr *);
 277         int (*cm_abort)(struct cnic_sock *);
 278         int (*cm_close)(struct cnic_sock *);
 279         struct cnic_dev *(*cm_select_dev)(struct sockaddr_in *, int ulp_type);
 280         int (*iscsi_nl_msg_recv)(struct cnic_dev *dev, u32 msg_type,
 281                                  char *data, u16 data_size);
 282         unsigned long   flags;
 283 #define CNIC_F_CNIC_UP          1
 284 #define CNIC_F_BNX2_CLASS       3
 285 #define CNIC_F_BNX2X_CLASS      4
 286         atomic_t        ref_count;
 287         u8              mac_addr[6];
 288
 289         int             max_iscsi_conn;
 290         int             max_fcoe_conn;
 291         int             max_rdma_conn;
 292
 293         void            *cnic_priv;
 294 };
 295
 296 #define CNIC_WR(dev, off, val)          writel(val, dev->regview + off)
 297 #define CNIC_WR16(dev, off, val)        writew(val, dev->regview + off)
 298 #define CNIC_WR8(dev, off, val)         writeb(val, dev->regview + off)
 299 #define CNIC_RD(dev, off)               readl(dev->regview + off)
 300 #define CNIC_RD16(dev, off)             readw(dev->regview + off)
 301
 302 struct cnic_ulp_ops {
 303         /* Calls to these functions are protected by RCU.  When
 304          * unregistering, we wait for any calls to complete before
 305          * continuing.
 306          */
 307
 308         void (*cnic_init)(struct cnic_dev *dev);
 309         void (*cnic_exit)(struct cnic_dev *dev);
 310         void (*cnic_start)(void *ulp_ctx);
 311         void (*cnic_stop)(void *ulp_ctx);
 312         void (*indicate_kcqes)(void *ulp_ctx, struct kcqe *cqes[],
 313                                 u32 num_cqes);
 314         void (*indicate_netevent)(void *ulp_ctx, unsigned long event);
 315         void (*cm_connect_complete)(struct cnic_sock *);
 316         void (*cm_close_complete)(struct cnic_sock *);
 317         void (*cm_abort_complete)(struct cnic_sock *);
 318         void (*cm_remote_close)(struct cnic_sock *);
 319         void (*cm_remote_abort)(struct cnic_sock *);
 320         int (*iscsi_nl_send_msg)(void *ulp_ctx, u32 msg_type,
 321                                   char *data, u16 data_size);
 322         struct module *owner;
 323         atomic_t ref_count;
 324 };
 325
 326 extern int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops);
 327
 328 extern int cnic_unregister_driver(int ulp_type);
 329
 330 extern struct cnic_eth_dev *bnx2_cnic_probe(struct net_device *dev);
 331 extern struct cnic_eth_dev *bnx2x_cnic_probe(struct net_device *dev);
 332
 333 #endif