kernel/drivers/scsi/fnic/fnic_res.h

   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
  30 static 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
  54 static 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
  79 static 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
 124 static 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
 150 static 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
 169 static 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
 193 static 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
 206 static 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
 223 static 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
 238 struct fnic;
 239
 240 int fnic_get_vnic_config(struct fnic *);
 241 int fnic_alloc_vnic_resources(struct fnic *);
 242 void fnic_free_vnic_resources(struct fnic *);
 243 void fnic_get_res_counts(struct fnic *);
 244 int 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_ */