From 6411fbbf469c02c7d9371da2251c738de9c2d5c7 Mon Sep 17 00:00:00 2001 From: drepper Date: Tue, 30 Sep 1997 17:08:39 +0000 Subject: [PATCH] Rewrite of kernel sg.h header. --- sysdeps/unix/sysv/linux/scsi/sg.h | 59 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/scsi/sg.h diff --git a/sysdeps/unix/sysv/linux/scsi/sg.h b/sysdeps/unix/sysv/linux/scsi/sg.h new file mode 100644 index 0000000000..c0a0c3a6d5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/scsi/sg.h @@ -0,0 +1,59 @@ +/* Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* + History: + Started: Aug 9 by Lawrence Foard (entropy@world.std.com), to allow user + process control of SCSI devices. + Development Sponsored by Killy Corp. NY NY +*/ + +#ifndef _SCSI_SG_H +#define _SCSI_SG_H 1 + +/* An SG device is accessed by writing "packets" to it, the replies + are then read using the read call. The same header is used for + replies; ignore the reply_len field. */ + +struct sg_header + { + int pack_len; /* length of incoming packet + (including header). */ + int reply_len; /* max length of expected reply. */ + int pack_id; /* id number of packet. */ + int result; /* 0==ok, otherwise error number. */ + unsigned int twelve_byte:1; /* force 12 byte command length for + group 6 & 7 commands. */ + unsigned int other_flags:31; /* for future use. */ + unsigned char sense_buffer[16]; /* used only by reads. */ + /* command follows then data for command. */ + }; + +/* ioctl's */ +#define SG_SET_TIMEOUT 0x2201 /* set timeout *(int *)arg==timeout */ +#define SG_GET_TIMEOUT 0x2202 /* get timeout return timeout */ + +#define SG_DEFAULT_TIMEOUT (60*HZ) /* 1 minute timeout */ +#define SG_DEFAULT_RETRIES 1 + +#define SG_MAX_QUEUE 4 /* maximum outstanding request, arbitrary, may be + changed if sufficient DMA buffer room available. */ + +#define SG_BIG_BUFF 32768 + +#endif /* scsi/sg.h */ -- 2.11.0