drivers/scsi/snic/snic_res.h

   1 /*
   2  * Copyright 2014 Cisco Systems, Inc.  All rights reserved.
   3  *
   4  * This program is free software; you may redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   9  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  10  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  11  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  12  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  13  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  14  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  15  * SOFTWARE.
  16  */
  17
  18 #ifndef __SNIC_RES_H
  19 #define __SNIC_RES_H
  20
  21 #include "snic_io.h"
  22 #include "wq_enet_desc.h"
  23 #include "vnic_wq.h"
  24 #include "snic_fwint.h"
  25 #include "vnic_cq_fw.h"
  26
  27 static inline void
  28 snic_icmnd_init(struct snic_host_req *req, u32 cmnd_id, u32 host_id, u64 ctx,
  29                 u16 flags, u64 tgt_id, u8 *lun, u8 *scsi_cdb, u8 cdb_len,
  30                 u32 data_len, u16 sg_cnt, ulong sgl_addr,
  31                 dma_addr_t sns_addr_pa, u32 sense_len)
  32 {
  33         snic_io_hdr_enc(&req->hdr, SNIC_REQ_ICMND, 0, cmnd_id, host_id, sg_cnt,
  34                         ctx);
  35
  36         req->u.icmnd.flags = cpu_to_le16(flags);
  37         req->u.icmnd.tgt_id = cpu_to_le64(tgt_id);
  38         memcpy(&req->u.icmnd.lun_id, lun, LUN_ADDR_LEN);
  39         req->u.icmnd.cdb_len = cdb_len;
  40         memset(req->u.icmnd.cdb, 0, SNIC_CDB_LEN);
  41         memcpy(req->u.icmnd.cdb, scsi_cdb, cdb_len);
  42         req->u.icmnd.data_len = cpu_to_le32(data_len);
  43         req->u.icmnd.sg_addr = cpu_to_le64(sgl_addr);
  44         req->u.icmnd.sense_len = cpu_to_le32(sense_len);
  45         req->u.icmnd.sense_addr = cpu_to_le64(sns_addr_pa);
  46 }
  47
  48 static inline void
  49 snic_itmf_init(struct snic_host_req *req, u32 cmnd_id, u32 host_id, ulong ctx,
  50                u16 flags, u32 req_id, u64 tgt_id, u8 *lun, u8 tm_type)
  51 {
  52         snic_io_hdr_enc(&req->hdr, SNIC_REQ_ITMF, 0, cmnd_id, host_id, 0, ctx);
  53
  54         req->u.itmf.tm_type = tm_type;
  55         req->u.itmf.flags = cpu_to_le16(flags);
  56         /* req_id valid only in abort, clear task */
  57         req->u.itmf.req_id = cpu_to_le32(req_id);
  58         req->u.itmf.tgt_id = cpu_to_le64(tgt_id);
  59         memcpy(&req->u.itmf.lun_id, lun, LUN_ADDR_LEN);
  60 }
  61
  62 static inline void
  63 snic_queue_wq_eth_desc(struct vnic_wq *wq,
  64                        void *os_buf,
  65                        dma_addr_t dma_addr,
  66                        unsigned int len,
  67                        int vlan_tag_insert,
  68                        unsigned int vlan_tag,
  69                        int cq_entry)
  70 {
  71         struct wq_enet_desc *desc = svnic_wq_next_desc(wq);
  72
  73         wq_enet_desc_enc(desc,
  74                         (u64)dma_addr | VNIC_PADDR_TARGET,
  75                         (u16)len,
  76                         0, /* mss_or_csum_offset */
  77                         0, /* fc_eof */
  78                         0, /* offload mode */
  79                         1, /* eop */
  80                         (u8)cq_entry,
  81                         0, /* fcoe_encap */
  82                         (u8)vlan_tag_insert,
  83                         (u16)vlan_tag,
  84                         0 /* loopback */);
  85
  86         svnic_wq_post(wq, os_buf, dma_addr, len, 1, 1);
  87 }
  88
  89 struct snic;
  90
  91 int snic_get_vnic_config(struct snic *);
  92 int snic_alloc_vnic_res(struct snic *);
  93 void snic_free_vnic_res(struct snic *);
  94 void snic_get_res_counts(struct snic *);
  95 void snic_log_q_error(struct snic *);
  96 int snic_get_vnic_resources_size(struct snic *);
  97 #endif /* __SNIC_RES_H */