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_copy_desc_icmnd_16(struct vnic_wq_copy *wq,
  55                                                     u32 req_id,
  56                                                     u32 lunmap_id, u8 spl_flags,
  57                                                     u32 sgl_cnt, u32 sense_len,
  58                                                     u64 sgl_addr, u64 sns_addr,
  59                                                     u8 crn, u8 pri_ta,
  60                                                     u8 flags, u8 *scsi_cdb,
  61                                                     u32 data_len, u8 *lun,
  62                                                     u32 d_id, u16 mss,
  63                                                     u32 ratov, u32 edtov)
  64 {
  65         struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
  66
  67         desc->hdr.type = FCPIO_ICMND_16; /* enum fcpio_type */
  68         desc->hdr.status = 0;            /* header status entry */
  69         desc->hdr._resvd = 0;            /* reserved */
  70         desc->hdr.tag.u.req_id = req_id; /* id for this request */
  71
  72         desc->u.icmnd_16.lunmap_id = lunmap_id; /* index into lunmap table */
  73         desc->u.icmnd_16.special_req_flags = spl_flags; /* exch req flags */
  74         desc->u.icmnd_16._resvd0[0] = 0;        /* reserved */
  75         desc->u.icmnd_16._resvd0[1] = 0;        /* reserved */
  76         desc->u.icmnd_16._resvd0[2] = 0;        /* reserved */
  77         desc->u.icmnd_16.sgl_cnt = sgl_cnt;     /* scatter-gather list count */
  78         desc->u.icmnd_16.sense_len = sense_len; /* sense buffer length */
  79         desc->u.icmnd_16.sgl_addr = sgl_addr;   /* scatter-gather list addr */
  80         desc->u.icmnd_16.sense_addr = sns_addr; /* sense buffer address */
  81         desc->u.icmnd_16.crn = crn;             /* SCSI Command Reference No.*/
  82         desc->u.icmnd_16.pri_ta = pri_ta;       /* SCSI Pri & Task attribute */
  83         desc->u.icmnd_16._resvd1 = 0;           /* reserved: should be 0 */
  84         desc->u.icmnd_16.flags = flags;         /* command flags */
  85         memcpy(desc->u.icmnd_16.scsi_cdb, scsi_cdb, CDB_16);    /* SCSI CDB */
  86         desc->u.icmnd_16.data_len = data_len;   /* length of data expected */
  87         memcpy(desc->u.icmnd_16.lun, lun, LUN_ADDRESS);  /* LUN address */
  88         desc->u.icmnd_16._resvd2 = 0;           /* reserved */
  89         hton24(desc->u.icmnd_16.d_id, d_id);    /* FC vNIC only: Target D_ID */
  90         desc->u.icmnd_16.mss = mss;             /* FC vNIC only: max burst */
  91         desc->u.icmnd_16.r_a_tov = ratov; /*FC vNIC only: Res. Alloc Timeout */
  92         desc->u.icmnd_16.e_d_tov = edtov; /*FC vNIC only: Err Detect Timeout */
  93
  94         vnic_wq_copy_post(wq);
  95 }
  96
  97 static inline void fnic_queue_wq_copy_desc_itmf(struct vnic_wq_copy *wq,
  98                                                 u32 req_id, u32 lunmap_id,
  99                                                 u32 tm_req, u32 tm_id, u8 *lun,
 100                                                 u32 d_id, u32 r_a_tov,
 101                                                 u32 e_d_tov)
 102 {
 103         struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
 104
 105         desc->hdr.type = FCPIO_ITMF;     /* enum fcpio_type */
 106         desc->hdr.status = 0;            /* header status entry */
 107         desc->hdr._resvd = 0;            /* reserved */
 108         desc->hdr.tag.u.req_id = req_id; /* id for this request */
 109
 110         desc->u.itmf.lunmap_id = lunmap_id; /* index into lunmap table */
 111         desc->u.itmf.tm_req = tm_req;       /* SCSI Task Management request */
 112         desc->u.itmf.t_tag = tm_id;         /* tag of fcpio to be aborted */
 113         desc->u.itmf._resvd = 0;
 114         memcpy(desc->u.itmf.lun, lun, LUN_ADDRESS);  /* LUN address */
 115         desc->u.itmf._resvd1 = 0;
 116         hton24(desc->u.itmf.d_id, d_id);    /* FC vNIC only: Target D_ID */
 117         desc->u.itmf.r_a_tov = r_a_tov;     /* FC vNIC only: R_A_TOV in msec */
 118         desc->u.itmf.e_d_tov = e_d_tov;     /* FC vNIC only: E_D_TOV in msec */
 119
 120         vnic_wq_copy_post(wq);
 121 }
 122
 123 static inline void fnic_queue_wq_copy_desc_flogi_reg(struct vnic_wq_copy *wq,
 124                                                      u32 req_id, u8 format,
 125                                                      u32 s_id, u8 *gw_mac)
 126 {
 127         struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
 128
 129         desc->hdr.type = FCPIO_FLOGI_REG;     /* enum fcpio_type */
 130         desc->hdr.status = 0;                 /* header status entry */
 131         desc->hdr._resvd = 0;                 /* reserved */
 132         desc->hdr.tag.u.req_id = req_id;      /* id for this request */
 133
 134         desc->u.flogi_reg.format = format;
 135         hton24(desc->u.flogi_reg.s_id, s_id);
 136         memcpy(desc->u.flogi_reg.gateway_mac, gw_mac, ETH_ALEN);
 137
 138         vnic_wq_copy_post(wq);
 139 }
 140
 141 static inline void fnic_queue_wq_copy_desc_fw_reset(struct vnic_wq_copy *wq,
 142                                                     u32 req_id)
 143 {
 144         struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
 145
 146         desc->hdr.type = FCPIO_RESET;     /* enum fcpio_type */
 147         desc->hdr.status = 0;             /* header status entry */
 148         desc->hdr._resvd = 0;             /* reserved */
 149         desc->hdr.tag.u.req_id = req_id;  /* id for this request */
 150
 151         vnic_wq_copy_post(wq);
 152 }
 153
 154 static inline void fnic_queue_wq_copy_desc_lunmap(struct vnic_wq_copy *wq,
 155                                                   u32 req_id, u64 lunmap_addr,
 156                                                   u32 lunmap_len)
 157 {
 158         struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
 159
 160         desc->hdr.type = FCPIO_LUNMAP_REQ;      /* enum fcpio_type */
 161         desc->hdr.status = 0;                   /* header status entry */
 162         desc->hdr._resvd = 0;                   /* reserved */
 163         desc->hdr.tag.u.req_id = req_id;        /* id for this request */
 164
 165         desc->u.lunmap_req.addr = lunmap_addr;  /* address of the buffer */
 166         desc->u.lunmap_req.len = lunmap_len;    /* len of the buffer */
 167
 168         vnic_wq_copy_post(wq);
 169 }
 170
 171 static inline void fnic_queue_rq_desc(struct vnic_rq *rq,
 172                                       void *os_buf, dma_addr_t dma_addr,
 173                                       u16 len)
 174 {
 175         struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
 176
 177         rq_enet_desc_enc(desc,
 178                 (u64)dma_addr | VNIC_PADDR_TARGET,
 179                 RQ_ENET_TYPE_ONLY_SOP,
 180                 (u16)len);
 181
 182         vnic_rq_post(rq, os_buf, 0, dma_addr, len);
 183 }
 184
 185
 186 struct fnic;
 187
 188 int fnic_get_vnic_config(struct fnic *);
 189 int fnic_alloc_vnic_resources(struct fnic *);
 190 void fnic_free_vnic_resources(struct fnic *);
 191 void fnic_get_res_counts(struct fnic *);
 192 int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
 193                         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu,
 194                         u8 rss_enable, u8 tso_ipid_split_en,
 195                         u8 ig_vlan_strip_en);
 196
 197 #endif /* _FNIC_RES_H_ */