linux/drivers/scsi/device_handler/scsi_dh_emc.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Target driver for EMC CLARiiON AX/CX-series hardware.
 * Based on code from Lars Marowsky-Bree <[email protected]>
 * and Ed Goggin <[email protected]>.
 *
 * Copyright (C) 2006 Red Hat, Inc.  All rights reserved.
 * Copyright (C) 2006 Mike Christie
 */
#include <linux/slab.h>
#include <linux/module.h>
#include <scsi/scsi.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_dh.h>
#include <scsi/scsi_device.h>

#define CLARIION_NAME …

#define CLARIION_TRESPASS_PAGE …
#define CLARIION_BUFFER_SIZE …
#define CLARIION_TIMEOUT …
#define CLARIION_RETRIES …
#define CLARIION_UNBOUND_LU …
#define CLARIION_SP_A …
#define CLARIION_SP_B …

/* Flags */
#define CLARIION_SHORT_TRESPASS …
#define CLARIION_HONOR_RESERVATIONS …

/* LUN states */
#define CLARIION_LUN_UNINITIALIZED …
#define CLARIION_LUN_UNBOUND …
#define CLARIION_LUN_BOUND …
#define CLARIION_LUN_OWNED …

static unsigned char long_trespass[] = …;

static unsigned char short_trespass[] = …;

static const char * lun_state[] = …;

struct clariion_dh_data { … };

/*
 * Parse MODE_SELECT cmd reply.
 */
static int trespass_endio(struct scsi_device *sdev,
			  struct scsi_sense_hdr *sshdr)
{ … }

static int parse_sp_info_reply(struct scsi_device *sdev,
			       struct clariion_dh_data *csdev)
{ … }

#define emc_default_str …

static char * parse_sp_model(struct scsi_device *sdev, unsigned char *buffer)
{ … }

static int send_trespass_cmd(struct scsi_device *sdev,
			    struct clariion_dh_data *csdev)
{ … }

static enum scsi_disposition clariion_check_sense(struct scsi_device *sdev,
					struct scsi_sense_hdr *sense_hdr)
{ … }

static blk_status_t clariion_prep_fn(struct scsi_device *sdev,
		struct request *req)
{ … }

static int clariion_std_inquiry(struct scsi_device *sdev,
				struct clariion_dh_data *csdev)
{ … }

static int clariion_send_inquiry(struct scsi_device *sdev,
				 struct clariion_dh_data *csdev)
{ … }

static int clariion_activate(struct scsi_device *sdev,
				activate_complete fn, void *data)
{ … }
/*
 * params - parameters in the following format
 *      "no_of_params\0param1\0param2\0param3\0...\0"
 *      for example, string for 2 parameters with value 10 and 21
 *      is specified as "2\010\021\0".
 */
static int clariion_set_params(struct scsi_device *sdev, const char *params)
{ … }

static int clariion_bus_attach(struct scsi_device *sdev)
{ … }

static void clariion_bus_detach(struct scsi_device *sdev)
{ … }

static struct scsi_device_handler clariion_dh = …;

static int __init clariion_init(void)
{ … }

static void __exit clariion_exit(void)
{ … }

module_init(…) …;
module_exit(clariion_exit);

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;