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* IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. By downloading, copying, installing or
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* copy or use the software.
*
* Intel License Agreement
*
* Copyright (c) 2000, Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that
* the following conditions are met:
*
* -Redistributions of source code must retain the above copyright notice, this list of conditions and the
*  following disclaimer.
*
* -Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
*  following disclaimer in the documentation and/or other materials provided with the distribution.
*
* -The name of Intel Corporation may not be used to endorse or promote products derived from this software
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*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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*/

/*
* Intel iSCSI Driver
*/

#ifndef _DRIVER_H_
#define _DRIVER_H_
#include "iscsi.h"
#include "iscsiutil.h"
#include "initiator.h"

/*
* Driver configuration
*/

#define CONFIG_DRIVER_MAX_LUNS 1024

/*
* Internal
*/

static int driver_init(void);
static int driver_shutdown(void);

typedef struct iscsi_driver_stats_t {
 unsigned num_tx, num_tx_queued;
 unsigned num_rx, num_rx_queued;
 unsigned avg_tx, avg_rx;
 unsigned tx_queued, tx, tx_error, tx_overflow;
 unsigned rx_queued, rx, rx_error, rx_overflow;
 unsigned aborts_success, aborts_failed;
 unsigned device_resets, bus_resets, host_resets;
 iscsi_spin_t lock;
} iscsi_driver_stats_t;

/*
* Kernel Interface
*/

int iscsi_proc_info (char *, char **, off_t, int, int, int);
int iscsi_detect(Scsi_Host_Template *);
int iscsi_release(struct Scsi_Host *);
int iscsi_ioctl(Scsi_Device *dev, int cmd, void *arg);
int iscsi_command(Scsi_Cmnd *SCpnt);
int iscsi_queuecommand(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
int iscsi_bios_param(Disk *, kdev_t, int *);
int iscsi_abort_handler (Scsi_Cmnd *SCpnt);
int iscsi_device_reset_handler (Scsi_Cmnd *);
int iscsi_bus_reset_handler (Scsi_Cmnd *);
int iscsi_host_reset_handler(Scsi_Cmnd *);

#if LINUX_VERSION_CODE >= LinuxVersionCode(2,3,0)
int iscsi_revoke (Scsi_Device *ptr);
void iscsi_select_queue_depths(struct Scsi_Host *, Scsi_Device *);
#endif

#if LINUX_VERSION_CODE < LinuxVersionCode(2,4,0)
extern struct proc_dir_entry iscsi_proc_dir;
#endif

#if LINUX_VERSION_CODE >= LinuxVersionCode(2,4,0)
#define ISCSI {                                                 \
       name: "Intel iSCSI Driver",                             \
       proc_dir: NULL,                                         \
       proc_info: iscsi_proc_info,                             \
       detect: iscsi_detect,                                   \
       bios_param: iscsi_bios_param,                           \
       release: iscsi_release,                                 \
       revoke: NULL,                                           \
       ioctl: iscsi_ioctl,                                     \
       command: iscsi_command,                                 \
       queuecommand: iscsi_queuecommand,                       \
       select_queue_depths: iscsi_select_queue_depths,         \
       eh_strategy_handler: NULL,                              \
       eh_abort_handler: iscsi_abort_handler,                  \
       eh_device_reset_handler: iscsi_device_reset_handler,    \
       eh_bus_reset_handler: iscsi_bus_reset_handler,          \
       eh_host_reset_handler: iscsi_host_reset_handler,        \
       slave_attach: NULL,                                     \
       can_queue: CONFIG_INITIATOR_QUEUE_DEPTH,                \
       this_id: -1,                                            \
       sg_tablesize: 128,                                      \
       cmd_per_lun: 1, /* linked commands not supported */     \
       present: 0,                                             \
       unchecked_isa_dma: 0,                                   \
       use_clustering: 0,                                      \
       use_new_eh_code: 1,                                     \
       emulated: 0,                                            \
       next: NULL,                                             \
       module: NULL,                                           \
       info: NULL,                                             \
       proc_name: "iscsi"                                      \
}
#elif LINUX_VERSION_CODE >= LinuxVersionCode(2,2,0)
#define ISCSI {                                                 \
       name: "Intel iSCSI Driver",                             \
       proc_dir: &iscsi_proc_dir,                              \
       proc_info: iscsi_proc_info,                             \
       detect: iscsi_detect,                                   \
       bios_param: iscsi_bios_param,                           \
       release: iscsi_release,                                 \
       ioctl: iscsi_ioctl,                                     \
       command: iscsi_command,                                 \
       queuecommand: iscsi_queuecommand,                       \
       eh_strategy_handler: NULL,                              \
       eh_abort_handler: iscsi_abort_handler,                  \
       eh_device_reset_handler: iscsi_device_reset_handler,    \
       eh_bus_reset_handler: iscsi_bus_reset_handler,          \
       eh_host_reset_handler: iscsi_host_reset_handler,        \
       use_new_eh_code: 1,                                     \
       can_queue: CONFIG_INITIATOR_QUEUE_DEPTH,                \
       sg_tablesize: SG_ALL,                                   \
       cmd_per_lun: 1, /* linked commands not supported */     \
       this_id: -1,                                            \
       present: 0,                                             \
       unchecked_isa_dma: 0,                                   \
       use_clustering: 0,                                      \
       slave_attach: NULL,                                     \
       next: NULL,                                             \
       module: NULL,                                           \
       info: NULL,                                             \
       emulated: 0                                             \
}
#endif /* LINUX_VERSION_CODE */
#endif /* _DRIVER_H_ */

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