Release 4.12 include/scsi/scsi_transport.h
/*
* Transport specific attributes.
*
* Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef SCSI_TRANSPORT_H
#define SCSI_TRANSPORT_H
#include <linux/transport_class.h>
#include <linux/blkdev.h>
#include <linux/bug.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
struct scsi_transport_template {
/* the attribute containers */
struct transport_container host_attrs;
struct transport_container target_attrs;
struct transport_container device_attrs;
/*
* If set, called from sysfs and legacy procfs rescanning code.
*/
int (*user_scan)(struct Scsi_Host *, uint, uint, u64);
/* The size of the specific transport attribute structure (a
* space of this size will be left at the end of the
* scsi_* structure */
int device_size;
int device_private_offset;
int target_size;
int target_private_offset;
int host_size;
/* no private offset for the host; there's an alternative mechanism */
/*
* True if the transport wants to use a host-based work-queue
*/
unsigned int create_work_queue : 1;
/*
* Allows a transport to override the default error handler.
*/
void (* eh_strategy_handler)(struct Scsi_Host *);
};
#define transport_class_to_shost(tc) \
dev_to_shost((tc)->parent)
/* Private area maintenance. The driver requested allocations come
* directly after the transport class allocations (if any). The idea
* is that you *must* call these only once. The code assumes that the
* initial values are the ones the transport specific code requires */
static inline void
scsi_transport_reserve_target(struct scsi_transport_template * t, int space)
{
BUG_ON(t->target_private_offset != 0);
t->target_private_offset = ALIGN(t->target_size, sizeof(void *));
t->target_size = t->target_private_offset + space;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Bottomley | 51 | 100.00% | 1 | 100.00% |
| Total | 51 | 100.00% | 1 | 100.00% |
static inline void
scsi_transport_reserve_device(struct scsi_transport_template * t, int space)
{
BUG_ON(t->device_private_offset != 0);
t->device_private_offset = ALIGN(t->device_size, sizeof(void *));
t->device_size = t->device_private_offset + space;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Bottomley | 51 | 100.00% | 1 | 100.00% |
| Total | 51 | 100.00% | 1 | 100.00% |
static inline void *
scsi_transport_target_data(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(&starget->dev);
return (u8 *)starget->starget_data
+ shost->transportt->target_private_offset;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Bottomley | 41 | 100.00% | 1 | 100.00% |
| Total | 41 | 100.00% | 1 | 100.00% |
static inline void *
scsi_transport_device_data(struct scsi_device *sdev)
{
struct Scsi_Host *shost = sdev->host;
return (u8 *)sdev->sdev_data
+ shost->transportt->device_private_offset;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Bottomley | 37 | 100.00% | 1 | 100.00% |
| Total | 37 | 100.00% | 1 | 100.00% |
void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q);
#endif /* SCSI_TRANSPORT_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Bottomley | 239 | 79.67% | 6 | 37.50% |
| Christoph Hellwig | 32 | 10.67% | 3 | 18.75% |
| James Smart | 18 | 6.00% | 2 | 12.50% |
| Rolf Eike Beer | 3 | 1.00% | 1 | 6.25% |
| Jens Axboe | 3 | 1.00% | 1 | 6.25% |
| Paul Gortmaker | 3 | 1.00% | 1 | 6.25% |
| Tony Jones | 1 | 0.33% | 1 | 6.25% |
| Hannes Reinecke | 1 | 0.33% | 1 | 6.25% |
| Total | 300 | 100.00% | 16 | 100.00% |
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