LXR linux/drivers/scsi/fnic/fnic

   1/*
   2 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
   3 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4 *
   5 * This program is free software; you may redistribute it and/or modify
   6 * it under the terms of the GNU General Public License as published by
   7 * the Free Software Foundation; version 2 of the License.
   8 *
   9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  16 * SOFTWARE.
  17 */
  18#ifndef _FNIC_RES_H_
  19#define _FNIC_RES_H_
  20
  21#include "wq_enet_desc.h"
  22#include "rq_enet_desc.h"
  23#include "vnic_wq.h"
  24#include "vnic_rq.h"
  25#include "fnic_io.h"
  26#include "fcpio.h"
  27#include "vnic_wq_copy.h"
  28#include "vnic_cq_copy.h"
  29
  30static inline void fnic_queue_wq_desc(struct vnic_wq *wq,
  31                                      void *os_buf, dma_addr_t dma_addr,
  32                                      unsigned int len, unsigned int fc_eof,
  33                                      int vlan_tag_insert,
  34                                      unsigned int vlan_tag,
  35                                      int cq_entry, int sop, int eop)
  36{
  37        struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
  38
  39        wq_enet_desc_enc(desc,
  40                         (u64)dma_addr | VNIC_PADDR_TARGET,
  41                         (u16)len,
  42                         0, /* mss_or_csum_offset */
  43                         (u16)fc_eof,
  44                         0, /* offload_mode */
  45                         (u8)eop, (u8)cq_entry,
  46                         1, /* fcoe_encap */
  47                         (u8)vlan_tag_insert,
  48                         (u16)vlan_tag,
  49                         0 /* loopback */);
  50
  51        vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop);
  52}
  53
  54static inline void fnic_queue_wq_eth_desc(struct vnic_wq *wq,
  55                                      void *os_buf, dma_addr_t dma_addr,
  56                                      unsigned int len,
  57                                      int vlan_tag_insert,
  58                                      unsigned int vlan_tag,
  59                                      int cq_entry)
  60{
  61        struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
  62
  63        wq_enet_desc_enc(desc,
  64                         (u64)dma_addr | VNIC_PADDR_TARGET,
  65                         (u16)len,
  66                         0, /* mss_or_csum_offset */
  67                         0, /* fc_eof */
  68                         0, /* offload_mode */
  69                         1, /* eop */
  70                         (u8)cq_entry,
  71                         0, /* fcoe_encap */
  72                         (u8)vlan_tag_insert,
  73                         (u16)vlan_tag,
  74                         0 /* loopback */);
  75
  76        vnic_wq_post(wq, os_buf, dma_addr, len, 1, 1);
  77}
  78
  79static inline void fnic_queue_wq_copy_desc_icmnd_16(struct vnic_wq_copy *wq,
  80                                                    u32 req_id,
  81                                                    u32 lunmap_id, u8 spl_flags,
  82                                                    u32 sgl_cnt, u32 sense_len,
  83                                                    u64 sgl_addr, u64 sns_addr,
  84                                                    u8 crn, u8 pri_ta,
  85                                                    u8 flags, u8 *scsi_cdb,
  86                                                    u8 cdb_len,
  87                                                    u32 data_len, u8 *lun,
  88                                                    u32 d_id, u16 mss,
  89                                                    u32 ratov, u32 edtov)
  90{
  91        struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
  92
  93        desc->hdr.type = FCPIO_ICMND_16; /* enum fcpio_type */
  94        desc->hdr.status = 0;            /* header status entry */
  95        desc->hdr._resvd = 0;            /* reserved */
  96        desc->hdr.tag.u.req_id = req_id; /* id for this request */
  97
  98        desc->u.icmnd_16.lunmap_id = lunmap_id; /* index into lunmap table */
  99        desc->u.icmnd_16.special_req_flags = spl_flags; /* exch req flags */
 100        desc->u.icmnd_16._resvd0[0] = 0;        /* reserved */
 101        desc->u.icmnd_16._resvd0[1] = 0;        /* reserved */
 102        desc->u.icmnd_16._resvd0[2] = 0;        /* reserved */
 103        desc->u.icmnd_16.sgl_cnt = sgl_cnt;     /* scatter-gather list count */
 104        desc->u.icmnd_16.sense_len = sense_len; /* sense buffer length */
 105        desc->u.icmnd_16.sgl_addr = sgl_addr;   /* scatter-gather list addr */
 106        desc->u.icmnd_16.sense_addr = sns_addr; /* sense buffer address */
 107        desc->u.icmnd_16.crn = crn;             /* SCSI Command Reference No.*/
 108        desc->u.icmnd_16.pri_ta = pri_ta;       /* SCSI Pri & Task attribute */
 109        desc->u.icmnd_16._resvd1 = 0;           /* reserved: should be 0 */
 110        desc->u.icmnd_16.flags = flags;         /* command flags */
 111        memset(desc->u.icmnd_16.scsi_cdb, 0, CDB_16);
 112        memcpy(desc->u.icmnd_16.scsi_cdb, scsi_cdb, cdb_len);    /* SCSI CDB */
 113        desc->u.icmnd_16.data_len = data_len;   /* length of data expected */
 114        memcpy(desc->u.icmnd_16.lun, lun, LUN_ADDRESS);  /* LUN address */
 115        desc->u.icmnd_16._resvd2 = 0;           /* reserved */
 116        hton24(desc->u.icmnd_16.d_id, d_id);    /* FC vNIC only: Target D_ID */
 117        desc->u.icmnd_16.mss = mss;             /* FC vNIC only: max burst */
 118        desc->u.icmnd_16.r_a_tov = ratov; /*FC vNIC only: Res. Alloc Timeout */
 119        desc->u.icmnd_16.e_d_tov = edtov; /*FC vNIC only: Err Detect Timeout */
 120
 121        vnic_wq_copy_post(wq);
 122}
 123
 124static inline void fnic_queue_wq_copy_desc_itmf(struct vnic_wq_copy *wq,
 125                                                u32 req_id, u32 lunmap_id,
 126                                                u32 tm_req, u32 tm_id, u8 *lun,
 127                                                u32 d_id, u32 r_a_tov,
 128                                                u32 e_d_tov)
 129{
 130        struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
 131
 132        desc->hdr.type = FCPIO_ITMF;     /* enum fcpio_type */
 133        desc->hdr.status = 0;            /* header status entry */
 134        desc->hdr._resvd = 0;            /* reserved */
 135        desc->hdr.tag.u.req_id = req_id; /* id for this request */
 136
 137        desc->u.itmf.lunmap_id = lunmap_id; /* index into lunmap table */
 138        desc->u.itmf.tm_req = tm_req;       /* SCSI Task Management request */
 139        desc->u.itmf.t_tag = tm_id;         /* tag of fcpio to be aborted */
 140        desc->u.itmf._resvd = 0;
 141        memcpy(desc->u.itmf.lun, lun, LUN_ADDRESS);  /* LUN address */
 142        desc->u.itmf._resvd1 = 0;
 143        hton24(desc->u.itmf.d_id, d_id);    /* FC vNIC only: Target D_ID */
 144        desc->u.itmf.r_a_tov = r_a_tov;     /* FC vNIC only: R_A_TOV in msec */
 145        desc->u.itmf.e_d_tov = e_d_tov;     /* FC vNIC only: E_D_TOV in msec */
 146
 147        vnic_wq_copy_post(wq);
 148}
 149
 150static inline void fnic_queue_wq_copy_desc_flogi_reg(struct vnic_wq_copy *wq,
 151                                                     u32 req_id, u8 format,
 152                                                     u32 s_id, u8 *gw_mac)
 153{
 154        struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
 155
 156        desc->hdr.type = FCPIO_FLOGI_REG;     /* enum fcpio_type */
 157        desc->hdr.status = 0;                 /* header status entry */
 158        desc->hdr._resvd = 0;                 /* reserved */
 159        desc->hdr.tag.u.req_id = req_id;      /* id for this request */
 160
 161        desc->u.flogi_reg.format = format;
 162        desc->u.flogi_reg._resvd = 0;
 163        hton24(desc->u.flogi_reg.s_id, s_id);
 164        memcpy(desc->u.flogi_reg.gateway_mac, gw_mac, ETH_ALEN);
 165
 166        vnic_wq_copy_post(wq);
 167}
 168
 169static inline void fnic_queue_wq_copy_desc_fip_reg(struct vnic_wq_copy *wq,
 170                                                   u32 req_id, u32 s_id,
 171                                                   u8 *fcf_mac, u8 *ha_mac,
 172                                                   u32 r_a_tov, u32 e_d_tov)
 173{
 174        struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
 175
 176        desc->hdr.type = FCPIO_FLOGI_FIP_REG; /* enum fcpio_type */
 177        desc->hdr.status = 0;                 /* header status entry */
 178        desc->hdr._resvd = 0;                 /* reserved */
 179        desc->hdr.tag.u.req_id = req_id;      /* id for this request */
 180
 181        desc->u.flogi_fip_reg._resvd0 = 0;
 182        hton24(desc->u.flogi_fip_reg.s_id, s_id);
 183        memcpy(desc->u.flogi_fip_reg.fcf_mac, fcf_mac, ETH_ALEN);
 184        desc->u.flogi_fip_reg._resvd1 = 0;
 185        desc->u.flogi_fip_reg.r_a_tov = r_a_tov;
 186        desc->u.flogi_fip_reg.e_d_tov = e_d_tov;
 187        memcpy(desc->u.flogi_fip_reg.ha_mac, ha_mac, ETH_ALEN);
 188        desc->u.flogi_fip_reg._resvd2 = 0;
 189
 190        vnic_wq_copy_post(wq);
 191}
 192
 193static inline void fnic_queue_wq_copy_desc_fw_reset(struct vnic_wq_copy *wq,
 194                                                    u32 req_id)
 195{
 196        struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
 197
 198        desc->hdr.type = FCPIO_RESET;     /* enum fcpio_type */
 199        desc->hdr.status = 0;             /* header status entry */
 200        desc->hdr._resvd = 0;             /* reserved */
 201        desc->hdr.tag.u.req_id = req_id;  /* id for this request */
 202
 203        vnic_wq_copy_post(wq);
 204}
 205
 206static inline void fnic_queue_wq_copy_desc_lunmap(struct vnic_wq_copy *wq,
 207                                                  u32 req_id, u64 lunmap_addr,
 208                                                  u32 lunmap_len)
 209{
 210        struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
 211
 212        desc->hdr.type = FCPIO_LUNMAP_REQ;      /* enum fcpio_type */
 213        desc->hdr.status = 0;                   /* header status entry */
 214        desc->hdr._resvd = 0;                   /* reserved */
 215        desc->hdr.tag.u.req_id = req_id;        /* id for this request */
 216
 217        desc->u.lunmap_req.addr = lunmap_addr;  /* address of the buffer */
 218        desc->u.lunmap_req.len = lunmap_len;    /* len of the buffer */
 219
 220        vnic_wq_copy_post(wq);
 221}
 222
 223static inline void fnic_queue_rq_desc(struct vnic_rq *rq,
 224                                      void *os_buf, dma_addr_t dma_addr,
 225                                      u16 len)
 226{
 227        struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
 228
 229        rq_enet_desc_enc(desc,
 230                (u64)dma_addr | VNIC_PADDR_TARGET,
 231                RQ_ENET_TYPE_ONLY_SOP,
 232                (u16)len);
 233
 234        vnic_rq_post(rq, os_buf, 0, dma_addr, len);
 235}
 236
 237
 238struct fnic;
 239
 240int fnic_get_vnic_config(struct fnic *);
 241int fnic_alloc_vnic_resources(struct fnic *);
 242void fnic_free_vnic_resources(struct fnic *);
 243void fnic_get_res_counts(struct fnic *);
 244int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
 245                        u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu,
 246                        u8 rss_enable, u8 tso_ipid_split_en,
 247                        u8 ig_vlan_strip_en);
 248
 249#endif /* _FNIC_RES_H_ */
 250