linux/drivers/scsi/bfa/bfad_im.h
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   1/*
   2 * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
   3 * All rights reserved
   4 * www.brocade.com
   5 *
   6 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7 *
   8 * This program is free software; you can redistribute it and/or modify it
   9 * under the terms of the GNU General Public License (GPL) Version 2 as
  10 * published by the Free Software Foundation
  11 *
  12 * This program is distributed in the hope that it will be useful, but
  13 * WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 * General Public License for more details.
  16 */
  17
  18#ifndef __BFAD_IM_H__
  19#define __BFAD_IM_H__
  20
  21#include "fcs/bfa_fcs_fcpim.h"
  22#include "bfad_im_compat.h"
  23
  24#define FCPI_NAME " fcpim"
  25
  26void bfad_flags_set(struct bfad_s *bfad, u32 flags);
  27bfa_status_t bfad_im_module_init(void);
  28void bfad_im_module_exit(void);
  29bfa_status_t bfad_im_probe(struct bfad_s *bfad);
  30void bfad_im_probe_undo(struct bfad_s *bfad);
  31void bfad_im_probe_post(struct bfad_im_s *im);
  32bfa_status_t bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port);
  33void bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port);
  34void bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port);
  35void bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port);
  36void bfad_im_port_clean(struct bfad_im_port_s *im_port);
  37int  bfad_im_scsi_host_alloc(struct bfad_s *bfad,
  38                                struct bfad_im_port_s *im_port);
  39void bfad_im_scsi_host_free(struct bfad_s *bfad,
  40                                struct bfad_im_port_s *im_port);
  41
  42#define MAX_FCP_TARGET 1024
  43#define MAX_FCP_LUN 16384
  44#define BFAD_TARGET_RESET_TMO 60
  45#define BFAD_LUN_RESET_TMO 60
  46#define ScsiResult(host_code, scsi_code) (((host_code) << 16) | scsi_code)
  47#define BFA_QUEUE_FULL_RAMP_UP_TIME 120
  48#define BFAD_KOBJ_NAME_LEN 20
  49
  50/*
  51 * itnim flags
  52 */
  53#define ITNIM_MAPPED            0x00000001
  54
  55#define SCSI_TASK_MGMT          0x00000001
  56#define IO_DONE_BIT                     0
  57
  58struct bfad_itnim_data_s {
  59        struct bfad_itnim_s *itnim;
  60};
  61
  62struct bfad_im_port_s {
  63        struct bfad_s         *bfad;
  64        struct bfad_port_s    *port;
  65        struct work_struct port_delete_work;
  66        int             idr_id;
  67        u16        cur_scsi_id;
  68        struct list_head binding_list;
  69        struct Scsi_Host *shost;
  70        struct list_head itnim_mapped_list;
  71};
  72
  73enum bfad_itnim_state {
  74        ITNIM_STATE_NONE,
  75        ITNIM_STATE_ONLINE,
  76        ITNIM_STATE_OFFLINE_PENDING,
  77        ITNIM_STATE_OFFLINE,
  78        ITNIM_STATE_TIMEOUT,
  79        ITNIM_STATE_FREE,
  80};
  81
  82/*
  83 * Per itnim data structure
  84 */
  85struct bfad_itnim_s {
  86        struct list_head list_entry;
  87        struct bfa_fcs_itnim_s fcs_itnim;
  88        struct work_struct itnim_work;
  89        u32        flags;
  90        enum bfad_itnim_state state;
  91        struct bfad_im_s *im;
  92        struct bfad_im_port_s *im_port;
  93        struct bfad_rport_s *drv_rport;
  94        struct fc_rport *fc_rport;
  95        struct bfa_itnim_s *bfa_itnim;
  96        u16        scsi_tgt_id;
  97        u16        queue_work;
  98        unsigned long   last_ramp_up_time;
  99        unsigned long   last_queue_full_time;
 100};
 101
 102enum bfad_binding_type {
 103        FCP_PWWN_BINDING = 0x1,
 104        FCP_NWWN_BINDING = 0x2,
 105        FCP_FCID_BINDING = 0x3,
 106};
 107
 108struct bfad_fcp_binding {
 109        struct list_head list_entry;
 110        enum bfad_binding_type binding_type;
 111        u16        scsi_target_id;
 112        u32        fc_id;
 113        wwn_t           nwwn;
 114        wwn_t           pwwn;
 115};
 116
 117struct bfad_im_s {
 118        struct bfad_s         *bfad;
 119        struct workqueue_struct *drv_workq;
 120        char   drv_workq_name[BFAD_KOBJ_NAME_LEN];
 121};
 122
 123struct Scsi_Host *bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port,
 124                                struct bfad_s *);
 125bfa_status_t bfad_os_thread_workq(struct bfad_s *bfad);
 126void bfad_os_destroy_workq(struct bfad_im_s *im);
 127void bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv);
 128void bfad_os_fc_host_init(struct bfad_im_port_s *im_port);
 129void bfad_os_init_work(struct bfad_im_port_s *im_port);
 130void bfad_os_scsi_host_free(struct bfad_s *bfad,
 131                                 struct bfad_im_port_s *im_port);
 132void bfad_os_ramp_up_qdepth(struct bfad_itnim_s *itnim,
 133                                 struct scsi_device *sdev);
 134void bfad_os_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev);
 135struct bfad_itnim_s *bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id);
 136int bfad_os_scsi_add_host(struct Scsi_Host *shost,
 137                struct bfad_im_port_s *im_port, struct bfad_s *bfad);
 138
 139/*
 140 * scsi_host_template entries
 141 */
 142void bfad_im_itnim_unmap(struct bfad_im_port_s  *im_port,
 143                         struct bfad_itnim_s *itnim);
 144
 145extern struct scsi_host_template bfad_im_scsi_host_template;
 146extern struct scsi_host_template bfad_im_vport_template;
 147extern struct fc_function_template bfad_im_fc_function_template;
 148extern struct scsi_transport_template *bfad_im_scsi_transport_template;
 149
 150#endif
 151