release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/scsi/bfa/bfad_im.h

   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
  26 bfa_status_t bfad_im_module_init(void);
  27 void bfad_im_module_exit(void);
  28 bfa_status_t bfad_im_probe(struct bfad_s *bfad);
  29 void bfad_im_probe_undo(struct bfad_s *bfad);
  30 void bfad_im_probe_post(struct bfad_im_s *im);
  31 bfa_status_t bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port);
  32 void bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port);
  33 void bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port);
  34 void bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port);
  35 void bfad_im_port_clean(struct bfad_im_port_s *im_port);
  36 int  bfad_im_scsi_host_alloc(struct bfad_s *bfad,
  37                 struct bfad_im_port_s *im_port, struct device *dev);
  38 void bfad_im_scsi_host_free(struct bfad_s *bfad,
  39                                 struct bfad_im_port_s *im_port);
  40
  41 #define MAX_FCP_TARGET 1024
  42 #define MAX_FCP_LUN 16384
  43 #define BFAD_TARGET_RESET_TMO 60
  44 #define BFAD_LUN_RESET_TMO 60
  45 #define ScsiResult(host_code, scsi_code) (((host_code) << 16) | scsi_code)
  46 #define BFA_QUEUE_FULL_RAMP_UP_TIME 120
  47 #define BFAD_KOBJ_NAME_LEN 20
  48
  49 /*
  50  * itnim flags
  51  */
  52 #define ITNIM_MAPPED            0x00000001
  53
  54 #define SCSI_TASK_MGMT          0x00000001
  55 #define IO_DONE_BIT                     0
  56
  57 struct bfad_itnim_data_s {
  58         struct bfad_itnim_s *itnim;
  59 };
  60
  61 struct bfad_im_port_s {
  62         struct bfad_s         *bfad;
  63         struct bfad_port_s    *port;
  64         struct work_struct port_delete_work;
  65         int             idr_id;
  66         u16        cur_scsi_id;
  67         u16        flags;
  68         struct list_head binding_list;
  69         struct Scsi_Host *shost;
  70         struct list_head itnim_mapped_list;
  71         struct fc_vport *fc_vport;
  72 };
  73
  74 enum bfad_itnim_state {
  75         ITNIM_STATE_NONE,
  76         ITNIM_STATE_ONLINE,
  77         ITNIM_STATE_OFFLINE_PENDING,
  78         ITNIM_STATE_OFFLINE,
  79         ITNIM_STATE_TIMEOUT,
  80         ITNIM_STATE_FREE,
  81 };
  82
  83 /*
  84  * Per itnim data structure
  85  */
  86 struct bfad_itnim_s {
  87         struct list_head list_entry;
  88         struct bfa_fcs_itnim_s fcs_itnim;
  89         struct work_struct itnim_work;
  90         u32        flags;
  91         enum bfad_itnim_state state;
  92         struct bfad_im_s *im;
  93         struct bfad_im_port_s *im_port;
  94         struct bfad_rport_s *drv_rport;
  95         struct fc_rport *fc_rport;
  96         struct bfa_itnim_s *bfa_itnim;
  97         u16        scsi_tgt_id;
  98         u16        queue_work;
  99         unsigned long   last_ramp_up_time;
 100         unsigned long   last_queue_full_time;
 101 };
 102
 103 enum bfad_binding_type {
 104         FCP_PWWN_BINDING = 0x1,
 105         FCP_NWWN_BINDING = 0x2,
 106         FCP_FCID_BINDING = 0x3,
 107 };
 108
 109 struct bfad_fcp_binding {
 110         struct list_head list_entry;
 111         enum bfad_binding_type binding_type;
 112         u16        scsi_target_id;
 113         u32        fc_id;
 114         wwn_t           nwwn;
 115         wwn_t           pwwn;
 116 };
 117
 118 struct bfad_im_s {
 119         struct bfad_s         *bfad;
 120         struct workqueue_struct *drv_workq;
 121         char   drv_workq_name[BFAD_KOBJ_NAME_LEN];
 122 };
 123
 124 struct Scsi_Host *bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port,
 125                                 struct bfad_s *);
 126 bfa_status_t bfad_os_thread_workq(struct bfad_s *bfad);
 127 void bfad_os_destroy_workq(struct bfad_im_s *im);
 128 void bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv);
 129 void bfad_os_fc_host_init(struct bfad_im_port_s *im_port);
 130 void bfad_os_scsi_host_free(struct bfad_s *bfad,
 131                                  struct bfad_im_port_s *im_port);
 132 void bfad_os_ramp_up_qdepth(struct bfad_itnim_s *itnim,
 133                                  struct scsi_device *sdev);
 134 void bfad_os_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev);
 135 struct bfad_itnim_s *bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id);
 136 int bfad_os_scsi_add_host(struct Scsi_Host *shost,
 137                 struct bfad_im_port_s *im_port, struct bfad_s *bfad);
 138
 139 void bfad_im_itnim_unmap(struct bfad_im_port_s  *im_port,
 140                          struct bfad_itnim_s *itnim);
 141
 142 extern struct scsi_host_template bfad_im_scsi_host_template;
 143 extern struct scsi_host_template bfad_im_vport_template;
 144 extern struct fc_function_template bfad_im_fc_function_template;
 145 extern struct fc_function_template bfad_im_vport_fc_function_template;
 146 extern struct scsi_transport_template *bfad_im_scsi_transport_template;
 147 extern struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
 148
 149 #endif