drivers/net/cnic_if.h

   1 /* cnic_if.h: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006 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     "2.0.0"
  16 #define CNIC_MODULE_RELDATE     "May 21, 2009"
  17
  18 #define CNIC_ULP_RDMA           0
  19 #define CNIC_ULP_ISCSI          1
  20 #define CNIC_ULP_L4             2
  21 #define MAX_CNIC_ULP_TYPE_EXT   2
  22 #define MAX_CNIC_ULP_TYPE       3
  23
  24 struct kwqe {
  25         u32 kwqe_op_flag;
  26
  27 #define KWQE_OPCODE_MASK        0x00ff0000
  28 #define KWQE_OPCODE_SHIFT       16
  29 #define KWQE_FLAGS_LAYER_SHIFT  28
  30 #define KWQE_OPCODE(x)          ((x & KWQE_OPCODE_MASK) >> KWQE_OPCODE_SHIFT)
  31
  32         u32 kwqe_info0;
  33         u32 kwqe_info1;
  34         u32 kwqe_info2;
  35         u32 kwqe_info3;
  36         u32 kwqe_info4;
  37         u32 kwqe_info5;
  38         u32 kwqe_info6;
  39 };
  40
  41 struct kwqe_16 {
  42         u32 kwqe_info0;
  43         u32 kwqe_info1;
  44         u32 kwqe_info2;
  45         u32 kwqe_info3;
  46 };
  47
  48 struct kcqe {
  49         u32 kcqe_info0;
  50         u32 kcqe_info1;
  51         u32 kcqe_info2;
  52         u32 kcqe_info3;
  53         u32 kcqe_info4;
  54         u32 kcqe_info5;
  55         u32 kcqe_info6;
  56         u32 kcqe_op_flag;
  57                 #define KCQE_RAMROD_COMPLETION          (0x1<<27) /* Everest */
  58                 #define KCQE_FLAGS_LAYER_MASK           (0x7<<28)
  59                 #define KCQE_FLAGS_LAYER_MASK_MISC      (0<<28)
  60                 #define KCQE_FLAGS_LAYER_MASK_L2        (2<<28)
  61                 #define KCQE_FLAGS_LAYER_MASK_L3        (3<<28)
  62                 #define KCQE_FLAGS_LAYER_MASK_L4        (4<<28)
  63                 #define KCQE_FLAGS_LAYER_MASK_L5_RDMA   (5<<28)
  64                 #define KCQE_FLAGS_LAYER_MASK_L5_ISCSI  (6<<28)
  65                 #define KCQE_FLAGS_NEXT                 (1<<31)
  66                 #define KCQE_FLAGS_OPCODE_MASK          (0xff<<16)
  67                 #define KCQE_FLAGS_OPCODE_SHIFT         (16)
  68                 #define KCQE_OPCODE(op)                 \
  69                 (((op) & KCQE_FLAGS_OPCODE_MASK) >> KCQE_FLAGS_OPCODE_SHIFT)
  70 };
  71
  72 #define MAX_CNIC_CTL_DATA       64
  73 #define MAX_DRV_CTL_DATA        64
  74
  75 #define CNIC_CTL_STOP_CMD               1
  76 #define CNIC_CTL_START_CMD              2
  77 #define CNIC_CTL_COMPLETION_CMD         3
  78
  79 #define DRV_CTL_IO_WR_CMD               0x101
  80 #define DRV_CTL_IO_RD_CMD               0x102
  81 #define DRV_CTL_CTX_WR_CMD              0x103
  82 #define DRV_CTL_CTXTBL_WR_CMD           0x104
  83 #define DRV_CTL_COMPLETION_CMD          0x105
  84
  85 struct cnic_ctl_completion {
  86         u32     cid;
  87 };
  88
  89 struct drv_ctl_completion {
  90         u32     comp_count;
  91 };
  92
  93 struct cnic_ctl_info {
  94         int     cmd;
  95         union {
  96                 struct cnic_ctl_completion comp;
  97                 char bytes[MAX_CNIC_CTL_DATA];
  98         } data;
  99 };
 100
 101 struct drv_ctl_io {
 102         u32             cid_addr;
 103         u32             offset;
 104         u32             data;
 105         dma_addr_t      dma_addr;
 106 };
 107
 108 struct drv_ctl_info {
 109         int     cmd;
 110         union {
 111                 struct drv_ctl_completion comp;
 112                 struct drv_ctl_io io;
 113                 char bytes[MAX_DRV_CTL_DATA];
 114         } data;
 115 };
 116
 117 struct cnic_ops {
 118         struct module   *cnic_owner;
 119         /* Calls to these functions are protected by RCU.  When
 120          * unregistering, we wait for any calls to complete before
 121          * continuing.
 122          */
 123         int             (*cnic_handler)(void *, void *);
 124         int             (*cnic_ctl)(void *, struct cnic_ctl_info *);
 125 };
 126
 127 #define MAX_CNIC_VEC    8
 128
 129 struct cnic_irq {
 130         unsigned int    vector;
 131         void            *status_blk;
 132         u32             status_blk_num;
 133         u32             irq_flags;
 134 #define CNIC_IRQ_FL_MSIX                0x00000001
 135 };
 136
 137 struct cnic_eth_dev {
 138         struct module   *drv_owner;
 139         u32             drv_state;
 140 #define CNIC_DRV_STATE_REGD             0x00000001
 141 #define CNIC_DRV_STATE_USING_MSIX       0x00000002
 142         u32             chip_id;
 143         u32             max_kwqe_pending;
 144         struct pci_dev  *pdev;
 145         void __iomem    *io_base;
 146
 147         u32             ctx_tbl_offset;
 148         u32             ctx_tbl_len;
 149         int             ctx_blk_size;
 150         u32             starting_cid;
 151         u32             max_iscsi_conn;
 152         u32             max_fcoe_conn;
 153         u32             max_rdma_conn;
 154         u32             reserved0[2];
 155
 156         int             num_irq;
 157         struct cnic_irq irq_arr[MAX_CNIC_VEC];
 158         int             (*drv_register_cnic)(struct net_device *,
 159                                              struct cnic_ops *, void *);
 160         int             (*drv_unregister_cnic)(struct net_device *);
 161         int             (*drv_submit_kwqes_32)(struct net_device *,
 162                                                struct kwqe *[], u32);
 163         int             (*drv_submit_kwqes_16)(struct net_device *,
 164                                                struct kwqe_16 *[], u32);
 165         int             (*drv_ctl)(struct net_device *, struct drv_ctl_info *);
 166         unsigned long   reserved1[2];
 167 };
 168
 169 struct cnic_sockaddr {
 170         union {
 171                 struct sockaddr_in      v4;
 172                 struct sockaddr_in6     v6;
 173         } local;
 174         union {
 175                 struct sockaddr_in      v4;
 176                 struct sockaddr_in6     v6;
 177         } remote;
 178 };
 179
 180 struct cnic_sock {
 181         struct cnic_dev *dev;
 182         void    *context;
 183         u32     src_ip[4];
 184         u32     dst_ip[4];
 185         u16     src_port;
 186         u16     dst_port;
 187         u16     vlan_id;
 188         unsigned char old_ha[6];
 189         unsigned char ha[6];
 190         u32     mtu;
 191         u32     cid;
 192         u32     l5_cid;
 193         u32     pg_cid;
 194         int     ulp_type;
 195
 196         u32     ka_timeout;
 197         u32     ka_interval;
 198         u8      ka_max_probe_count;
 199         u8      tos;
 200         u8      ttl;
 201         u8      snd_seq_scale;
 202         u32     rcv_buf;
 203         u32     snd_buf;
 204         u32     seed;
 205
 206         unsigned long   tcp_flags;
 207 #define SK_TCP_NO_DELAY_ACK     0x1
 208 #define SK_TCP_KEEP_ALIVE       0x2
 209 #define SK_TCP_NAGLE            0x4
 210 #define SK_TCP_TIMESTAMP        0x8
 211 #define SK_TCP_SACK             0x10
 212 #define SK_TCP_SEG_SCALING      0x20
 213         unsigned long   flags;
 214 #define SK_F_INUSE              0
 215 #define SK_F_OFFLD_COMPLETE     1
 216 #define SK_F_OFFLD_SCHED        2
 217 #define SK_F_PG_OFFLD_COMPLETE  3
 218 #define SK_F_CONNECT_START      4
 219 #define SK_F_IPV6               5
 220 #define SK_F_CLOSING            7
 221
 222         atomic_t ref_count;
 223         u32 state;
 224         struct kwqe kwqe1;
 225         struct kwqe kwqe2;
 226         struct kwqe kwqe3;
 227 };
 228
 229 struct cnic_dev {
 230         struct net_device       *netdev;
 231         struct pci_dev          *pcidev;
 232         void __iomem            *regview;
 233         struct list_head        list;
 234
 235         int (*register_device)(struct cnic_dev *dev, int ulp_type,
 236                                void *ulp_ctx);
 237         int (*unregister_device)(struct cnic_dev *dev, int ulp_type);
 238         int (*submit_kwqes)(struct cnic_dev *dev, struct kwqe *wqes[],
 239                                 u32 num_wqes);
 240         int (*submit_kwqes_16)(struct cnic_dev *dev, struct kwqe_16 *wqes[],
 241                                 u32 num_wqes);
 242
 243         int (*cm_create)(struct cnic_dev *, int, u32, u32, struct cnic_sock **,
 244                          void *);
 245         int (*cm_destroy)(struct cnic_sock *);
 246         int (*cm_connect)(struct cnic_sock *, struct cnic_sockaddr *);
 247         int (*cm_abort)(struct cnic_sock *);
 248         int (*cm_close)(struct cnic_sock *);
 249         struct cnic_dev *(*cm_select_dev)(struct sockaddr_in *, int ulp_type);
 250         int (*iscsi_nl_msg_recv)(struct cnic_dev *dev, u32 msg_type,
 251                                  char *data, u16 data_size);
 252         unsigned long   flags;
 253 #define CNIC_F_CNIC_UP          1
 254 #define CNIC_F_BNX2_CLASS       3
 255 #define CNIC_F_BNX2X_CLASS      4
 256         atomic_t        ref_count;
 257         u8              mac_addr[6];
 258
 259         int             max_iscsi_conn;
 260         int             max_fcoe_conn;
 261         int             max_rdma_conn;
 262
 263         void            *cnic_priv;
 264 };
 265
 266 #define CNIC_WR(dev, off, val)          writel(val, dev->regview + off)
 267 #define CNIC_WR16(dev, off, val)        writew(val, dev->regview + off)
 268 #define CNIC_WR8(dev, off, val)         writeb(val, dev->regview + off)
 269 #define CNIC_RD(dev, off)               readl(dev->regview + off)
 270 #define CNIC_RD16(dev, off)             readw(dev->regview + off)
 271
 272 struct cnic_ulp_ops {
 273         /* Calls to these functions are protected by RCU.  When
 274          * unregistering, we wait for any calls to complete before
 275          * continuing.
 276          */
 277
 278         void (*cnic_init)(struct cnic_dev *dev);
 279         void (*cnic_exit)(struct cnic_dev *dev);
 280         void (*cnic_start)(void *ulp_ctx);
 281         void (*cnic_stop)(void *ulp_ctx);
 282         void (*indicate_kcqes)(void *ulp_ctx, struct kcqe *cqes[],
 283                                 u32 num_cqes);
 284         void (*indicate_netevent)(void *ulp_ctx, unsigned long event);
 285         void (*cm_connect_complete)(struct cnic_sock *);
 286         void (*cm_close_complete)(struct cnic_sock *);
 287         void (*cm_abort_complete)(struct cnic_sock *);
 288         void (*cm_remote_close)(struct cnic_sock *);
 289         void (*cm_remote_abort)(struct cnic_sock *);
 290         void (*iscsi_nl_send_msg)(struct cnic_dev *dev, u32 msg_type,
 291                                   char *data, u16 data_size);
 292         struct module *owner;
 293 };
 294
 295 extern int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops);
 296
 297 extern int cnic_unregister_driver(int ulp_type);
 298
 299 extern struct cnic_eth_dev *bnx2_cnic_probe(struct net_device *dev);
 300
 301 #endif