external/bsd/iscsi/dist/include/driver.h

   1
   2 /*
   3  * IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. By downloading, copying, installing or
   4  * using the software you agree to this license. If you do not agree to this license, do not download, install,
   5  * copy or use the software.
   6  *
   7  * Intel License Agreement
   8  *
   9  * Copyright (c) 2000, Intel Corporation
  10  * All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without modification, are permitted provided that
  13  * the following conditions are met:
  14  *
  15  * -Redistributions of source code must retain the above copyright notice, this list of conditions and the
  16  *  following disclaimer.
  17  *
  18  * -Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
  19  *  following disclaimer in the documentation and/or other materials provided with the distribution.
  20  *
  21  * -The name of Intel Corporation may not be used to endorse or promote products derived from this software
  22  *  without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
  25  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  26  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  28  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  30  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * Intel iSCSI Driver
  36  */
  37
  38 #ifndef _DRIVER_H_
  39 #define _DRIVER_H_
  40 #include "iscsi.h"
  41 #include "iscsiutil.h"
  42 #include "initiator.h"
  43
  44 /*
  45  * Driver configuration
  46  */
  47
  48 #define CONFIG_DRIVER_MAX_LUNS 1024
  49
  50 /*
  51  * Internal
  52  */
  53
  54 static int driver_init(void);
  55 static int driver_shutdown(void);
  56
  57 typedef struct iscsi_driver_stats_t {
  58   unsigned num_tx, num_tx_queued;
  59   unsigned num_rx, num_rx_queued;
  60   unsigned avg_tx, avg_rx;
  61   unsigned tx_queued, tx, tx_error, tx_overflow;
  62   unsigned rx_queued, rx, rx_error, rx_overflow;
  63   unsigned aborts_success, aborts_failed;
  64   unsigned device_resets, bus_resets, host_resets;
  65   iscsi_spin_t lock;
  66 } iscsi_driver_stats_t;
  67
  68 /*
  69  * Kernel Interface
  70  */
  71
  72 int iscsi_proc_info (char *, char **, off_t, int, int, int);
  73 int iscsi_detect(Scsi_Host_Template *);
  74 int iscsi_release(struct Scsi_Host *);
  75 int iscsi_ioctl(Scsi_Device *dev, int cmd, void *arg);
  76 int iscsi_command(Scsi_Cmnd *SCpnt);
  77 int iscsi_queuecommand(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
  78 int iscsi_bios_param(Disk *, kdev_t, int *);
  79 int iscsi_abort_handler (Scsi_Cmnd *SCpnt);
  80 int iscsi_device_reset_handler (Scsi_Cmnd *);
  81 int iscsi_bus_reset_handler (Scsi_Cmnd *);
  82 int iscsi_host_reset_handler(Scsi_Cmnd *);
  83
  84 #if LINUX_VERSION_CODE >= LinuxVersionCode(2,3,0)
  85 int iscsi_revoke (Scsi_Device *ptr);
  86 void iscsi_select_queue_depths(struct Scsi_Host *, Scsi_Device *);
  87 #endif
  88
  89 #if LINUX_VERSION_CODE < LinuxVersionCode(2,4,0)
  90 extern struct proc_dir_entry iscsi_proc_dir;
  91 #endif
  92
  93 #if LINUX_VERSION_CODE >= LinuxVersionCode(2,4,0)
  94 #define ISCSI {                                                 \
  95         name: "Intel iSCSI Driver",                             \
  96         proc_dir: NULL,                                         \
  97         proc_info: iscsi_proc_info,                             \
  98         detect: iscsi_detect,                                   \
  99         bios_param: iscsi_bios_param,                           \
 100         release: iscsi_release,                                 \
 101         revoke: NULL,                                           \
 102         ioctl: iscsi_ioctl,                                     \
 103         command: iscsi_command,                                 \
 104         queuecommand: iscsi_queuecommand,                       \
 105         select_queue_depths: iscsi_select_queue_depths,         \
 106         eh_strategy_handler: NULL,                              \
 107         eh_abort_handler: iscsi_abort_handler,                  \
 108         eh_device_reset_handler: iscsi_device_reset_handler,    \
 109         eh_bus_reset_handler: iscsi_bus_reset_handler,          \
 110         eh_host_reset_handler: iscsi_host_reset_handler,        \
 111         slave_attach: NULL,                                     \
 112         can_queue: CONFIG_INITIATOR_QUEUE_DEPTH,                \
 113         this_id: -1,                                            \
 114         sg_tablesize: 128,                                      \
 115         cmd_per_lun: 1, /* linked commands not supported */     \
 116         present: 0,                                             \
 117         unchecked_isa_dma: 0,                                   \
 118         use_clustering: 0,                                      \
 119         use_new_eh_code: 1,                                     \
 120         emulated: 0,                                            \
 121         next: NULL,                                             \
 122         module: NULL,                                           \
 123         info: NULL,                                             \
 124         proc_name: "iscsi"                                      \
 125 }
 126 #elif LINUX_VERSION_CODE >= LinuxVersionCode(2,2,0)
 127 #define ISCSI {                                                 \
 128         name: "Intel iSCSI Driver",                             \
 129         proc_dir: &iscsi_proc_dir,                              \
 130         proc_info: iscsi_proc_info,                             \
 131         detect: iscsi_detect,                                   \
 132         bios_param: iscsi_bios_param,                           \
 133         release: iscsi_release,                                 \
 134         ioctl: iscsi_ioctl,                                     \
 135         command: iscsi_command,                                 \
 136         queuecommand: iscsi_queuecommand,                       \
 137         eh_strategy_handler: NULL,                              \
 138         eh_abort_handler: iscsi_abort_handler,                  \
 139         eh_device_reset_handler: iscsi_device_reset_handler,    \
 140         eh_bus_reset_handler: iscsi_bus_reset_handler,          \
 141         eh_host_reset_handler: iscsi_host_reset_handler,        \
 142         use_new_eh_code: 1,                                     \
 143         can_queue: CONFIG_INITIATOR_QUEUE_DEPTH,                \
 144         sg_tablesize: SG_ALL,                                   \
 145         cmd_per_lun: 1, /* linked commands not supported */     \
 146         this_id: -1,                                            \
 147         present: 0,                                             \
 148         unchecked_isa_dma: 0,                                   \
 149         use_clustering: 0,                                      \
 150         slave_attach: NULL,                                     \
 151         next: NULL,                                             \
 152         module: NULL,                                           \
 153         info: NULL,                                             \
 154         emulated: 0                                             \
 155 }
 156 #endif /* LINUX_VERSION_CODE */
 157 #endif /* _DRIVER_H_ */