drivers/scsi/fnic/fnic_io.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
   4  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   5  */
   6 #ifndef _FNIC_IO_H_
   7 #define _FNIC_IO_H_
   8
   9 #include <scsi/fc/fc_fcp.h>
  10
  11 #define FNIC_DFLT_SG_DESC_CNT  32
  12 #define FNIC_MAX_SG_DESC_CNT        256     /* Maximum descriptors per sgl */
  13 #define FNIC_SG_DESC_ALIGN          16      /* Descriptor address alignment */
  14
  15 struct host_sg_desc {
  16         __le64 addr;
  17         __le32 len;
  18         u32 _resvd;
  19 };
  20
  21 struct fnic_dflt_sgl_list {
  22         struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT];
  23 };
  24
  25 struct fnic_sgl_list {
  26         struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT];
  27 };
  28
  29 enum fnic_sgl_list_type {
  30         FNIC_SGL_CACHE_DFLT = 0,  /* cache with default size sgl */
  31         FNIC_SGL_CACHE_MAX,       /* cache with max size sgl */
  32         FNIC_SGL_NUM_CACHES       /* number of sgl caches */
  33 };
  34
  35 enum fnic_ioreq_state {
  36         FNIC_IOREQ_NOT_INITED = 0,
  37         FNIC_IOREQ_CMD_PENDING,
  38         FNIC_IOREQ_ABTS_PENDING,
  39         FNIC_IOREQ_ABTS_COMPLETE,
  40         FNIC_IOREQ_CMD_COMPLETE,
  41 };
  42
  43 struct fnic_io_req {
  44         struct host_sg_desc *sgl_list; /* sgl list */
  45         void *sgl_list_alloc; /* sgl list address used for free */
  46         dma_addr_t sense_buf_pa; /* dma address for sense buffer*/
  47         dma_addr_t sgl_list_pa; /* dma address for sgl list */
  48         u16 sgl_cnt;
  49         u8 sgl_type; /* device DMA descriptor list type */
  50         u8 io_completed:1; /* set to 1 when fw completes IO */
  51         u32 port_id; /* remote port DID */
  52         unsigned long start_time; /* in jiffies */
  53         struct completion *abts_done; /* completion for abts */
  54         struct completion *dr_done; /* completion for device reset */
  55         unsigned int tag;
  56         struct scsi_cmnd *sc; /* midlayer's cmd pointer */
  57 };
  58
  59 enum fnic_port_speeds {
  60         DCEM_PORTSPEED_NONE = 0,
  61         DCEM_PORTSPEED_1G    = 1000,
  62         DCEM_PORTSPEED_10G   = 10000,
  63         DCEM_PORTSPEED_20G   = 20000,
  64         DCEM_PORTSPEED_25G   = 25000,
  65         DCEM_PORTSPEED_40G   = 40000,
  66         DCEM_PORTSPEED_4x10G = 41000,
  67         DCEM_PORTSPEED_100G  = 100000,
  68 };
  69 #endif /* _FNIC_IO_H_ */