LXR linux/drivers/scsi/snic/snic

   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
  27static inline void
  28snic_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
  48static inline void
  49snic_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
  62static inline void
  63snic_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
  89struct snic;
  90
  91int snic_get_vnic_config(struct snic *);
  92int snic_alloc_vnic_res(struct snic *);
  93void snic_free_vnic_res(struct snic *);
  94void snic_get_res_counts(struct snic *);
  95void snic_log_q_error(struct snic *);
  96int snic_get_vnic_resources_size(struct snic *);
  97#endif /* __SNIC_RES_H */
  98