LXR linux/drivers/scsi/fnic/fnic

   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_IO_H_
  19#define _FNIC_IO_H_
  20
  21#include <scsi/fc/fc_fcp.h>
  22
  23#define FNIC_DFLT_SG_DESC_CNT  32
  24#define FNIC_MAX_SG_DESC_CNT        256     /* Maximum descriptors per sgl */
  25#define FNIC_SG_DESC_ALIGN          16      /* Descriptor address alignment */
  26
  27struct host_sg_desc {
  28        __le64 addr;
  29        __le32 len;
  30        u32 _resvd;
  31};
  32
  33struct fnic_dflt_sgl_list {
  34        struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT];
  35};
  36
  37struct fnic_sgl_list {
  38        struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT];
  39};
  40
  41enum fnic_sgl_list_type {
  42        FNIC_SGL_CACHE_DFLT = 0,  /* cache with default size sgl */
  43        FNIC_SGL_CACHE_MAX,       /* cache with max size sgl */
  44        FNIC_SGL_NUM_CACHES       /* number of sgl caches */
  45};
  46
  47enum fnic_ioreq_state {
  48        FNIC_IOREQ_NOT_INITED = 0,
  49        FNIC_IOREQ_CMD_PENDING,
  50        FNIC_IOREQ_ABTS_PENDING,
  51        FNIC_IOREQ_ABTS_COMPLETE,
  52        FNIC_IOREQ_CMD_COMPLETE,
  53};
  54
  55struct fnic_io_req {
  56        struct host_sg_desc *sgl_list; /* sgl list */
  57        void *sgl_list_alloc; /* sgl list address used for free */
  58        dma_addr_t sense_buf_pa; /* dma address for sense buffer*/
  59        dma_addr_t sgl_list_pa; /* dma address for sgl list */
  60        u16 sgl_cnt;
  61        u8 sgl_type; /* device DMA descriptor list type */
  62        u8 io_completed:1; /* set to 1 when fw completes IO */
  63        u32 port_id; /* remote port DID */
  64        unsigned long start_time; /* in jiffies */
  65        struct completion *abts_done; /* completion for abts */
  66        struct completion *dr_done; /* completion for device reset */
  67};
  68
  69enum fnic_port_speeds {
  70        DCEM_PORTSPEED_NONE = 0,
  71        DCEM_PORTSPEED_1G    = 1000,
  72        DCEM_PORTSPEED_10G   = 10000,
  73        DCEM_PORTSPEED_20G   = 20000,
  74        DCEM_PORTSPEED_25G   = 25000,
  75        DCEM_PORTSPEED_40G   = 40000,
  76        DCEM_PORTSPEED_4x10G = 41000,
  77        DCEM_PORTSPEED_100G  = 100000,
  78};
  79#endif /* _FNIC_IO_H_ */
  80