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     "2.5.7"
  16 #define CNIC_MODULE_RELDATE     "July 20, 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         u8      opcode;
 103         u8      error;
 104 };
 105
 106 struct cnic_ctl_info {
 107         int     cmd;
 108         union {
 109                 struct cnic_ctl_completion comp;
 110                 char bytes[MAX_CNIC_CTL_DATA];
 111         } data;
 112 };
 113
 114 struct drv_ctl_spq_credit {
 115         u32     credit_count;
 116 };
 117
 118 struct drv_ctl_io {
 119         u32             cid_addr;
 120         u32             offset;
 121         u32             data;
 122         dma_addr_t      dma_addr;
 123 };
 124
 125 struct drv_ctl_l2_ring {
 126         u32             client_id;
 127         u32             cid;
 128 };
 129
 130 struct drv_ctl_info {
 131         int     cmd;
 132         union {
 133                 struct drv_ctl_spq_credit credit;
 134                 struct drv_ctl_io io;
 135                 struct drv_ctl_l2_ring ring;
 136                 char bytes[MAX_DRV_CTL_DATA];
 137         } data;
 138 };
 139
 140 struct cnic_ops {
 141         struct module   *cnic_owner;
 142         /* Calls to these functions are protected by RCU.  When
 143          * unregistering, we wait for any calls to complete before
 144          * continuing.
 145          */
 146         int             (*cnic_handler)(void *, void *);
 147         int             (*cnic_ctl)(void *, struct cnic_ctl_info *);
 148 };
 149
 150 #define MAX_CNIC_VEC    8
 151
 152 struct cnic_irq {
 153         unsigned int    vector;
 154         void            *status_blk;
 155         u32             status_blk_num;
 156         u32             status_blk_num2;
 157         u32             irq_flags;
 158 #define CNIC_IRQ_FL_MSIX                0x00000001
 159 };
 160
 161 struct cnic_eth_dev {
 162         struct module   *drv_owner;
 163         u32             drv_state;
 164 #define CNIC_DRV_STATE_REGD             0x00000001
 165 #define CNIC_DRV_STATE_USING_MSIX       0x00000002
 166 #define CNIC_DRV_STATE_NO_ISCSI_OOO     0x00000004
 167 #define CNIC_DRV_STATE_NO_ISCSI         0x00000008
 168 #define CNIC_DRV_STATE_NO_FCOE          0x00000010
 169         u32             chip_id;
 170         u32             max_kwqe_pending;
 171         struct pci_dev  *pdev;
 172         void __iomem    *io_base;
 173         void __iomem    *io_base2;
 174         const void      *iro_arr;
 175
 176         u32             ctx_tbl_offset;
 177         u32             ctx_tbl_len;
 178         int             ctx_blk_size;
 179         u32             starting_cid;
 180         u32             max_iscsi_conn;
 181         u32             max_fcoe_conn;
 182         u32             max_rdma_conn;
 183         u32             fcoe_init_cid;
 184         u32             fcoe_wwn_port_name_hi;
 185         u32             fcoe_wwn_port_name_lo;
 186         u32             fcoe_wwn_node_name_hi;
 187         u32             fcoe_wwn_node_name_lo;
 188
 189         u16             iscsi_l2_client_id;
 190         u16             iscsi_l2_cid;
 191         u8              iscsi_mac[ETH_ALEN];
 192
 193         int             num_irq;
 194         struct cnic_irq irq_arr[MAX_CNIC_VEC];
 195         int             (*drv_register_cnic)(struct net_device *,
 196                                              struct cnic_ops *, void *);
 197         int             (*drv_unregister_cnic)(struct net_device *);
 198         int             (*drv_submit_kwqes_32)(struct net_device *,
 199                                                struct kwqe *[], u32);
 200         int             (*drv_submit_kwqes_16)(struct net_device *,
 201                                                struct kwqe_16 *[], u32);
 202         int             (*drv_ctl)(struct net_device *, struct drv_ctl_info *);
 203         unsigned long   reserved1[2];
 204 };
 205
 206 struct cnic_sockaddr {
 207         union {
 208                 struct sockaddr_in      v4;
 209                 struct sockaddr_in6     v6;
 210         } local;
 211         union {
 212                 struct sockaddr_in      v4;
 213                 struct sockaddr_in6     v6;
 214         } remote;
 215 };
 216
 217 struct cnic_sock {
 218         struct cnic_dev *dev;
 219         void    *context;
 220         u32     src_ip[4];
 221         u32     dst_ip[4];
 222         u16     src_port;
 223         u16     dst_port;
 224         u16     vlan_id;
 225         unsigned char old_ha[6];
 226         unsigned char ha[6];
 227         u32     mtu;
 228         u32     cid;
 229         u32     l5_cid;
 230         u32     pg_cid;
 231         int     ulp_type;
 232
 233         u32     ka_timeout;
 234         u32     ka_interval;
 235         u8      ka_max_probe_count;
 236         u8      tos;
 237         u8      ttl;
 238         u8      snd_seq_scale;
 239         u32     rcv_buf;
 240         u32     snd_buf;
 241         u32     seed;
 242
 243         unsigned long   tcp_flags;
 244 #define SK_TCP_NO_DELAY_ACK     0x1
 245 #define SK_TCP_KEEP_ALIVE       0x2
 246 #define SK_TCP_NAGLE            0x4
 247 #define SK_TCP_TIMESTAMP        0x8
 248 #define SK_TCP_SACK             0x10
 249 #define SK_TCP_SEG_SCALING      0x20
 250         unsigned long   flags;
 251 #define SK_F_INUSE              0
 252 #define SK_F_OFFLD_COMPLETE     1
 253 #define SK_F_OFFLD_SCHED        2
 254 #define SK_F_PG_OFFLD_COMPLETE  3
 255 #define SK_F_CONNECT_START      4
 256 #define SK_F_IPV6               5
 257 #define SK_F_CLOSING            7
 258
 259         atomic_t ref_count;
 260         u32 state;
 261         struct kwqe kwqe1;
 262         struct kwqe kwqe2;
 263         struct kwqe kwqe3;
 264 };
 265
 266 struct cnic_dev {
 267         struct net_device       *netdev;
 268         struct pci_dev          *pcidev;
 269         void __iomem            *regview;
 270         struct list_head        list;
 271
 272         int (*register_device)(struct cnic_dev *dev, int ulp_type,
 273                                void *ulp_ctx);
 274         int (*unregister_device)(struct cnic_dev *dev, int ulp_type);
 275         int (*submit_kwqes)(struct cnic_dev *dev, struct kwqe *wqes[],
 276                                 u32 num_wqes);
 277         int (*submit_kwqes_16)(struct cnic_dev *dev, struct kwqe_16 *wqes[],
 278                                 u32 num_wqes);
 279
 280         int (*cm_create)(struct cnic_dev *, int, u32, u32, struct cnic_sock **,
 281                          void *);
 282         int (*cm_destroy)(struct cnic_sock *);
 283         int (*cm_connect)(struct cnic_sock *, struct cnic_sockaddr *);
 284         int (*cm_abort)(struct cnic_sock *);
 285         int (*cm_close)(struct cnic_sock *);
 286         struct cnic_dev *(*cm_select_dev)(struct sockaddr_in *, int ulp_type);
 287         int (*iscsi_nl_msg_recv)(struct cnic_dev *dev, u32 msg_type,
 288                                  char *data, u16 data_size);
 289         unsigned long   flags;
 290 #define CNIC_F_CNIC_UP          1
 291 #define CNIC_F_BNX2_CLASS       3
 292 #define CNIC_F_BNX2X_CLASS      4
 293         atomic_t        ref_count;
 294         u8              mac_addr[6];
 295
 296         int             max_iscsi_conn;
 297         int             max_fcoe_conn;
 298         int             max_rdma_conn;
 299
 300         void            *cnic_priv;
 301 };
 302
 303 #define CNIC_WR(dev, off, val)          writel(val, dev->regview + off)
 304 #define CNIC_WR16(dev, off, val)        writew(val, dev->regview + off)
 305 #define CNIC_WR8(dev, off, val)         writeb(val, dev->regview + off)
 306 #define CNIC_RD(dev, off)               readl(dev->regview + off)
 307 #define CNIC_RD16(dev, off)             readw(dev->regview + off)
 308
 309 struct cnic_ulp_ops {
 310         /* Calls to these functions are protected by RCU.  When
 311          * unregistering, we wait for any calls to complete before
 312          * continuing.
 313          */
 314
 315         void (*cnic_init)(struct cnic_dev *dev);
 316         void (*cnic_exit)(struct cnic_dev *dev);
 317         void (*cnic_start)(void *ulp_ctx);
 318         void (*cnic_stop)(void *ulp_ctx);
 319         void (*indicate_kcqes)(void *ulp_ctx, struct kcqe *cqes[],
 320                                 u32 num_cqes);
 321         void (*indicate_netevent)(void *ulp_ctx, unsigned long event, u16 vid);
 322         void (*cm_connect_complete)(struct cnic_sock *);
 323         void (*cm_close_complete)(struct cnic_sock *);
 324         void (*cm_abort_complete)(struct cnic_sock *);
 325         void (*cm_remote_close)(struct cnic_sock *);
 326         void (*cm_remote_abort)(struct cnic_sock *);
 327         int (*iscsi_nl_send_msg)(void *ulp_ctx, u32 msg_type,
 328                                   char *data, u16 data_size);
 329         struct module *owner;
 330         atomic_t ref_count;
 331 };
 332
 333 extern int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops);
 334
 335 extern int cnic_unregister_driver(int ulp_type);
 336
 337 extern struct cnic_eth_dev *bnx2_cnic_probe(struct net_device *dev);
 338 extern struct cnic_eth_dev *bnx2x_cnic_probe(struct net_device *dev);
 339
 340 #endif