drivers/scsi/libata.h

   1 /*
   2  *  libata.h - helper library for ATA
   3  *
   4  *  Copyright 2003-2004 Red Hat, Inc.  All rights reserved.
   5  *  Copyright 2003-2004 Jeff Garzik
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2, or (at your option)
  11  *  any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; see the file COPYING.  If not, write to
  20  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  *
  23  *  libata documentation is available via 'make {ps|pdf}docs',
  24  *  as Documentation/DocBook/libata.*
  25  *
  26  */
  27
  28 #ifndef __LIBATA_H__
  29 #define __LIBATA_H__
  30
  31 #define DRV_NAME        "libata"
  32 #define DRV_VERSION     "1.12"  /* must be exactly four chars */
  33
  34 struct ata_scsi_args {
  35         u16                     *id;
  36         struct scsi_cmnd        *cmd;
  37         void                    (*done)(struct scsi_cmnd *);
  38 };
  39
  40 /* libata-core.c */
  41 extern int atapi_enabled;
  42 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
  43                                       struct ata_device *dev);
  44 extern void ata_qc_free(struct ata_queued_cmd *qc);
  45 extern int ata_qc_issue(struct ata_queued_cmd *qc);
  46 extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
  47 extern void ata_dev_select(struct ata_port *ap, unsigned int device,
  48                            unsigned int wait, unsigned int can_sleep);
  49 extern void ata_tf_to_host_nolock(struct ata_port *ap, struct ata_taskfile *tf);
  50 extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
  51
  52
  53 /* libata-scsi.c */
  54 extern void ata_to_sense_error(struct ata_queued_cmd *qc, u8 drv_stat);
  55 extern int ata_scsi_error(struct Scsi_Host *host);
  56 extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,
  57                                unsigned int buflen);
  58
  59 extern unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf,
  60                               unsigned int buflen);
  61
  62 extern unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
  63                               unsigned int buflen);
  64 extern unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf,
  65                               unsigned int buflen);
  66 extern unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf,
  67                             unsigned int buflen);
  68 extern unsigned int ata_scsiop_sync_cache(struct ata_scsi_args *args, u8 *rbuf,
  69                                   unsigned int buflen);
  70 extern unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
  71                                   unsigned int buflen);
  72 extern unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf,
  73                                 unsigned int buflen);
  74 extern unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf,
  75                                    unsigned int buflen);
  76 extern void ata_scsi_badcmd(struct scsi_cmnd *cmd,
  77                             void (*done)(struct scsi_cmnd *),
  78                             u8 asc, u8 ascq);
  79 extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
  80                         unsigned int (*actor) (struct ata_scsi_args *args,
  81                                            u8 *rbuf, unsigned int buflen));
  82
  83 static inline void ata_bad_scsiop(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
  84 {
  85         ata_scsi_badcmd(cmd, done, 0x20, 0x00);
  86 }
  87
  88 static inline void ata_bad_cdb(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
  89 {
  90         ata_scsi_badcmd(cmd, done, 0x24, 0x00);
  91 }
  92
  93 #endif /* __LIBATA_H__ */