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authorEric Andersen <andersen@codepoet.org>2004-02-12 00:18:33 +0000
committerEric Andersen <andersen@codepoet.org>2004-02-12 00:18:33 +0000
commit935b2624237d36650c5034a6100b5395cf4c6b24 (patch)
treeb06bcd6d23b882851041f4d1e0bf996e92f76bdf
parent082e680bd54e999f2bb4eb77141958938b1e9ee9 (diff)
Add our own copies of the include/scsi header files, per what glibc
does, rather than depending on the kernel header files. -Erik
-rw-r--r--Makefile2
-rwxr-xr-xextra/scripts/fix_includes.sh4
-rw-r--r--include/scsi/scsi.h226
-rw-r--r--include/scsi/scsi_ioctl.h34
-rw-r--r--include/scsi/sg.h275
5 files changed, 537 insertions, 4 deletions
diff --git a/Makefile b/Makefile
index df2522395..819cc87b3 100644
--- a/Makefile
+++ b/Makefile
@@ -373,7 +373,7 @@ clean:
$(RM) include/sys/$$i; \
done; \
fi;
- @$(RM) include/linux include/scsi include/asm*
+ @$(RM) include/linux include/asm*
@if [ -d libc/sysdeps/linux/$(TARGET_ARCH) ]; then \
$(MAKE) -C libc/sysdeps/linux/$(TARGET_ARCH) clean; \
fi;
diff --git a/extra/scripts/fix_includes.sh b/extra/scripts/fix_includes.sh
index 879bec0f1..ae25267d8 100755
--- a/extra/scripts/fix_includes.sh
+++ b/extra/scripts/fix_includes.sh
@@ -161,9 +161,7 @@ if [ $VERSION -eq 2 ] && [ $PATCHLEVEL -ge 6 ] ; then
fi;
-# Create the include/linux and include/scsi symlinks.
+# Create the include/linux symlink.
rm -f include/linux
ln -fs $KERNEL_SOURCE/include/linux include/linux
-rm -f include/scsi
-ln -fs $KERNEL_SOURCE/include/scsi include/scsi
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
new file mode 100644
index 000000000..49ab75806
--- /dev/null
+++ b/include/scsi/scsi.h
@@ -0,0 +1,226 @@
+/* Copyright (C) 1998, 1999 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/*
+ * This header file contains public constants and structures used by
+ * the scsi code for linux.
+ */
+
+#ifndef _SCSI_SCSI_H
+#define _SCSI_SCSI_H 1
+
+#include <features.h>
+
+/*
+ * SCSI opcodes
+ */
+
+#define TEST_UNIT_READY 0x00
+#define REZERO_UNIT 0x01
+#define REQUEST_SENSE 0x03
+#define FORMAT_UNIT 0x04
+#define READ_BLOCK_LIMITS 0x05
+#define REASSIGN_BLOCKS 0x07
+#define READ_6 0x08
+#define WRITE_6 0x0a
+#define SEEK_6 0x0b
+#define READ_REVERSE 0x0f
+#define WRITE_FILEMARKS 0x10
+#define SPACE 0x11
+#define INQUIRY 0x12
+#define RECOVER_BUFFERED_DATA 0x14
+#define MODE_SELECT 0x15
+#define RESERVE 0x16
+#define RELEASE 0x17
+#define COPY 0x18
+#define ERASE 0x19
+#define MODE_SENSE 0x1a
+#define START_STOP 0x1b
+#define RECEIVE_DIAGNOSTIC 0x1c
+#define SEND_DIAGNOSTIC 0x1d
+#define ALLOW_MEDIUM_REMOVAL 0x1e
+
+#define SET_WINDOW 0x24
+#define READ_CAPACITY 0x25
+#define READ_10 0x28
+#define WRITE_10 0x2a
+#define SEEK_10 0x2b
+#define WRITE_VERIFY 0x2e
+#define VERIFY 0x2f
+#define SEARCH_HIGH 0x30
+#define SEARCH_EQUAL 0x31
+#define SEARCH_LOW 0x32
+#define SET_LIMITS 0x33
+#define PRE_FETCH 0x34
+#define READ_POSITION 0x34
+#define SYNCHRONIZE_CACHE 0x35
+#define LOCK_UNLOCK_CACHE 0x36
+#define READ_DEFECT_DATA 0x37
+#define MEDIUM_SCAN 0x38
+#define COMPARE 0x39
+#define COPY_VERIFY 0x3a
+#define WRITE_BUFFER 0x3b
+#define READ_BUFFER 0x3c
+#define UPDATE_BLOCK 0x3d
+#define READ_LONG 0x3e
+#define WRITE_LONG 0x3f
+#define CHANGE_DEFINITION 0x40
+#define WRITE_SAME 0x41
+#define READ_TOC 0x43
+#define LOG_SELECT 0x4c
+#define LOG_SENSE 0x4d
+#define MODE_SELECT_10 0x55
+#define RESERVE_10 0x56
+#define RELEASE_10 0x57
+#define MODE_SENSE_10 0x5a
+#define PERSISTENT_RESERVE_IN 0x5e
+#define PERSISTENT_RESERVE_OUT 0x5f
+#define MOVE_MEDIUM 0xa5
+#define READ_12 0xa8
+#define WRITE_12 0xaa
+#define WRITE_VERIFY_12 0xae
+#define SEARCH_HIGH_12 0xb0
+#define SEARCH_EQUAL_12 0xb1
+#define SEARCH_LOW_12 0xb2
+#define READ_ELEMENT_STATUS 0xb8
+#define SEND_VOLUME_TAG 0xb6
+#define WRITE_LONG_2 0xea
+
+/*
+ * Status codes
+ */
+
+#define GOOD 0x00
+#define CHECK_CONDITION 0x01
+#define CONDITION_GOOD 0x02
+#define BUSY 0x04
+#define INTERMEDIATE_GOOD 0x08
+#define INTERMEDIATE_C_GOOD 0x0a
+#define RESERVATION_CONFLICT 0x0c
+#define COMMAND_TERMINATED 0x11
+#define QUEUE_FULL 0x14
+
+#define STATUS_MASK 0x3e
+
+/*
+ * SENSE KEYS
+ */
+
+#define NO_SENSE 0x00
+#define RECOVERED_ERROR 0x01
+#define NOT_READY 0x02
+#define MEDIUM_ERROR 0x03
+#define HARDWARE_ERROR 0x04
+#define ILLEGAL_REQUEST 0x05
+#define UNIT_ATTENTION 0x06
+#define DATA_PROTECT 0x07
+#define BLANK_CHECK 0x08
+#define COPY_ABORTED 0x0a
+#define ABORTED_COMMAND 0x0b
+#define VOLUME_OVERFLOW 0x0d
+#define MISCOMPARE 0x0e
+
+
+/*
+ * DEVICE TYPES
+ */
+
+#define TYPE_DISK 0x00
+#define TYPE_TAPE 0x01
+#define TYPE_PROCESSOR 0x03 /* HP scanners use this */
+#define TYPE_WORM 0x04 /* Treated as ROM by our system */
+#define TYPE_ROM 0x05
+#define TYPE_SCANNER 0x06
+#define TYPE_MOD 0x07 /* Magneto-optical disk -
+ * - treated as TYPE_DISK */
+#define TYPE_MEDIUM_CHANGER 0x08
+#define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */
+#define TYPE_NO_LUN 0x7f
+
+/*
+ * standard mode-select header prepended to all mode-select commands
+ *
+ * moved here from cdrom.h -- kraxel
+ */
+
+struct ccs_modesel_head
+ {
+ unsigned char _r1; /* reserved. */
+ unsigned char medium; /* device-specific medium type. */
+ unsigned char _r2; /* reserved. */
+ unsigned char block_desc_length; /* block descriptor length. */
+ unsigned char density; /* device-specific density code. */
+ unsigned char number_blocks_hi; /* number of blocks in this block
+ desc. */
+ unsigned char number_blocks_med;
+ unsigned char number_blocks_lo;
+ unsigned char _r3;
+ unsigned char block_length_hi; /* block length for blocks in this
+ desc. */
+ unsigned char block_length_med;
+ unsigned char block_length_lo;
+ };
+
+/*
+ * MESSAGE CODES
+ */
+
+#define COMMAND_COMPLETE 0x00
+#define EXTENDED_MESSAGE 0x01
+#define EXTENDED_MODIFY_DATA_POINTER 0x00
+#define EXTENDED_SDTR 0x01
+#define EXTENDED_EXTENDED_IDENTIFY 0x02 /* SCSI-I only */
+#define EXTENDED_WDTR 0x03
+#define SAVE_POINTERS 0x02
+#define RESTORE_POINTERS 0x03
+#define DISCONNECT 0x04
+#define INITIATOR_ERROR 0x05
+#define ABORT 0x06
+#define MESSAGE_REJECT 0x07
+#define NOP 0x08
+#define MSG_PARITY_ERROR 0x09
+#define LINKED_CMD_COMPLETE 0x0a
+#define LINKED_FLG_CMD_COMPLETE 0x0b
+#define BUS_DEVICE_RESET 0x0c
+
+#define INITIATE_RECOVERY 0x0f /* SCSI-II only */
+#define RELEASE_RECOVERY 0x10 /* SCSI-II only */
+
+#define SIMPLE_QUEUE_TAG 0x20
+#define HEAD_OF_QUEUE_TAG 0x21
+#define ORDERED_QUEUE_TAG 0x22
+
+/*
+ * Here are some scsi specific ioctl commands which are sometimes useful.
+ */
+/* These are a few other constants only used by scsi devices. */
+
+#define SCSI_IOCTL_GET_IDLUN 0x5382
+
+/* Used to turn on and off tagged queuing for scsi devices. */
+
+#define SCSI_IOCTL_TAGGED_ENABLE 0x5383
+#define SCSI_IOCTL_TAGGED_DISABLE 0x5384
+
+/* Used to obtain the host number of a device. */
+#define SCSI_IOCTL_PROBE_HOST 0x5385
+
+/* Used to get the bus number for a device. */
+#define SCSI_IOCTL_GET_BUS_NUMBER 0x5386
+
+#endif /* scsi/scsi.h */
diff --git a/include/scsi/scsi_ioctl.h b/include/scsi/scsi_ioctl.h
new file mode 100644
index 000000000..11f016179
--- /dev/null
+++ b/include/scsi/scsi_ioctl.h
@@ -0,0 +1,34 @@
+/* Copyright (C) 1999 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _SCSI_IOCTL_H
+#define _SCSI_IOCTL_H
+
+/* IOCTLs for SCSI. */
+#define SCSI_IOCTL_SEND_COMMAND 1 /* Send a command to the SCSI host. */
+#define SCSI_IOCTL_TEST_UNIT_READY 2 /* Test if unit is ready. */
+#define SCSI_IOCTL_BENCHMARK_COMMAND 3
+#define SCSI_IOCTL_SYNC 4 /* Request synchronous parameters. */
+#define SCSI_IOCTL_START_UNIT 5
+#define SCSI_IOCTL_STOP_UNIT 6
+#define SCSI_IOCTL_DOORLOCK 0x5380 /* Lock the eject mechanism. */
+#define SCSI_IOCTL_DOORUNLOCK 0x5381 /* Unlock the mechanism. */
+
+#endif
+
+
diff --git a/include/scsi/sg.h b/include/scsi/sg.h
new file mode 100644
index 000000000..b0dc0ad7d
--- /dev/null
+++ b/include/scsi/sg.h
@@ -0,0 +1,275 @@
+/* Copyright (C) 1997, 1998, 1999, 2000 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; 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
+
+#include <features.h>
+
+
+/* New interface introduced in the 3.x SG drivers follows */
+
+/* Same structure as used by readv() Linux system call. It defines one
+ scatter-gather element. */
+typedef struct sg_iovec
+{
+ void * iov_base; /* Starting address */
+ size_t iov_len; /* Length in bytes */
+} sg_iovec_t;
+
+
+typedef struct sg_io_hdr
+{
+ int interface_id; /* [i] 'S' for SCSI generic (required) */
+ int dxfer_direction; /* [i] data transfer direction */
+ unsigned char cmd_len; /* [i] SCSI command length ( <= 16 bytes) */
+ unsigned char mx_sb_len; /* [i] max length to write to sbp */
+ unsigned short int iovec_count; /* [i] 0 implies no scatter gather */
+ unsigned int dxfer_len; /* [i] byte count of data transfer */
+ void * dxferp; /* [i], [*io] points to data transfer memory
+ or scatter gather list */
+ unsigned char * cmdp; /* [i], [*i] points to command to perform */
+ unsigned char * sbp; /* [i], [*o] points to sense_buffer memory */
+ unsigned int timeout; /* [i] MAX_UINT->no timeout (unit: millisec) */
+ unsigned int flags; /* [i] 0 -> default, see SG_FLAG... */
+ int pack_id; /* [i->o] unused internally (normally) */
+ void * usr_ptr; /* [i->o] unused internally */
+ unsigned char status; /* [o] scsi status */
+ unsigned char masked_status;/* [o] shifted, masked scsi status */
+ unsigned char msg_status; /* [o] messaging level data (optional) */
+ unsigned char sb_len_wr; /* [o] byte count actually written to sbp */
+ unsigned short int host_status; /* [o] errors from host adapter */
+ unsigned short int driver_status;/* [o] errors from software driver */
+ int resid; /* [o] dxfer_len - actual_transferred */
+ unsigned int duration; /* [o] time taken by cmd (unit: millisec) */
+ unsigned int info; /* [o] auxiliary information */
+} sg_io_hdr_t;
+
+
+/* Use negative values to flag difference from original sg_header structure. */
+#define SG_DXFER_NONE -1 /* e.g. a SCSI Test Unit Ready command */
+#define SG_DXFER_TO_DEV -2 /* e.g. a SCSI WRITE command */
+#define SG_DXFER_FROM_DEV -3 /* e.g. a SCSI READ command */
+#define SG_DXFER_TO_FROM_DEV -4 /* treated like SG_DXFER_FROM_DEV with the
+ additional property than during indirect
+ IO the user buffer is copied into the
+ kernel buffers before the transfer */
+
+
+/* following flag values can be "or"-ed together */
+#define SG_FLAG_DIRECT_IO 1 /* default is indirect IO */
+#define SG_FLAG_LUN_INHIBIT 2 /* default is to put device's lun into */
+ /* the 2nd byte of SCSI command */
+#define SG_FLAG_NO_DXFER 0x10000 /* no transfer of kernel buffers to/from */
+ /* user space (debug indirect IO) */
+
+/* The following 'info' values are "or"-ed together. */
+#define SG_INFO_OK_MASK 0x1
+#define SG_INFO_OK 0x0 /* no sense, host nor driver "noise" */
+#define SG_INFO_CHECK 0x1 /* something abnormal happened */
+
+#define SG_INFO_DIRECT_IO_MASK 0x6
+#define SG_INFO_INDIRECT_IO 0x0 /* data xfer via kernel buffers (or no xfer) */
+#define SG_INFO_DIRECT_IO 0x2 /* direct IO requested and performed */
+#define SG_INFO_MIXED_IO 0x4 /* part direct, part indirect IO */
+
+
+/* Request information about a specific SG device, used by
+ SG_GET_SCSI_ID ioctl (). */
+struct sg_scsi_id {
+ /* Host number as in "scsi<n>" where 'n' is one of 0, 1, 2 etc. */
+ int host_no;
+ int channel;
+ /* SCSI id of target device. */
+ int scsi_id;
+ int lun;
+ /* TYPE_... defined in <scsi/scsi.h>. */
+ int scsi_type;
+ /* Host (adapter) maximum commands per lun. */
+ short int h_cmd_per_lun;
+ /* Device (or adapter) maximum queue length. */
+ short int d_queue_depth;
+ /* Unused, set to 0 for now. */
+ int unused[2];
+};
+
+/* Used by SG_GET_REQUEST_TABLE ioctl(). */
+typedef struct sg_req_info {
+ char req_state; /* 0 -> not used, 1 -> written, 2 -> ready to read */
+ char orphan; /* 0 -> normal request, 1 -> from interruped SG_IO */
+ char sg_io_owned; /* 0 -> complete with read(), 1 -> owned by SG_IO */
+ char problem; /* 0 -> no problem detected, 1 -> error to report */
+ int pack_id; /* pack_id associated with request */
+ void * usr_ptr; /* user provided pointer (in new interface) */
+ unsigned int duration; /* millisecs elapsed since written (req_state==1)
+ or request duration (req_state==2) */
+ int unused;
+} sg_req_info_t;
+
+
+/* IOCTLs: Those ioctls that are relevant to the SG 3.x drivers follow.
+ [Those that only apply to the SG 2.x drivers are at the end of the file.]
+ (_GET_s yield result via 'int *' 3rd argument unless otherwise indicated) */
+
+#define SG_EMULATED_HOST 0x2203 /* true for emulated host adapter (ATAPI) */
+
+/* Used to configure SCSI command transformation layer for ATAPI devices */
+/* Only supported by the ide-scsi driver */
+#define SG_SET_TRANSFORM 0x2204 /* N.B. 3rd arg is not pointer but value: */
+ /* 3rd arg = 0 to disable transform, 1 to enable it */
+#define SG_GET_TRANSFORM 0x2205
+
+#define SG_SET_RESERVED_SIZE 0x2275 /* request a new reserved buffer size */
+#define SG_GET_RESERVED_SIZE 0x2272 /* actual size of reserved buffer */
+
+/* The following ioctl has a 'sg_scsi_id_t *' object as its 3rd argument. */
+#define SG_GET_SCSI_ID 0x2276 /* Yields fd's bus, chan, dev, lun + type */
+/* SCSI id information can also be obtained from SCSI_IOCTL_GET_IDLUN */
+
+/* Override host setting and always DMA using low memory ( <16MB on i386) */
+#define SG_SET_FORCE_LOW_DMA 0x2279 /* 0-> use adapter setting, 1-> force */
+#define SG_GET_LOW_DMA 0x227a /* 0-> use all ram for dma; 1-> low dma ram */
+
+/* When SG_SET_FORCE_PACK_ID set to 1, pack_id is input to read() which
+ tries to fetch a packet with a matching pack_id, waits, or returns EAGAIN.
+ If pack_id is -1 then read oldest waiting. When ...FORCE_PACK_ID set to 0
+ then pack_id ignored by read() and oldest readable fetched. */
+#define SG_SET_FORCE_PACK_ID 0x227b
+#define SG_GET_PACK_ID 0x227c /* Yields oldest readable pack_id (or -1) */
+
+#define SG_GET_NUM_WAITING 0x227d /* Number of commands awaiting read() */
+
+/* Yields max scatter gather tablesize allowed by current host adapter */
+#define SG_GET_SG_TABLESIZE 0x227F /* 0 implies can't do scatter gather */
+
+#define SG_GET_VERSION_NUM 0x2282 /* Example: version 2.1.34 yields 20134 */
+
+/* Returns -EBUSY if occupied. 3rd argument pointer to int (see next) */
+#define SG_SCSI_RESET 0x2284
+/* Associated values that can be given to SG_SCSI_RESET follow */
+#define SG_SCSI_RESET_NOTHING 0
+#define SG_SCSI_RESET_DEVICE 1
+#define SG_SCSI_RESET_BUS 2
+#define SG_SCSI_RESET_HOST 3
+
+/* synchronous SCSI command ioctl, (only in version 3 interface) */
+#define SG_IO 0x2285 /* similar effect as write() followed by read() */
+
+#define SG_GET_REQUEST_TABLE 0x2286 /* yields table of active requests */
+
+/* How to treat EINTR during SG_IO ioctl(), only in SG 3.x series */
+#define SG_SET_KEEP_ORPHAN 0x2287 /* 1 -> hold for read(), 0 -> drop (def) */
+#define SG_GET_KEEP_ORPHAN 0x2288
+
+
+#define SG_SCATTER_SZ (8 * 4096) /* PAGE_SIZE not available to user */
+/* Largest size (in bytes) a single scatter-gather list element can have.
+ The value must be a power of 2 and <= (PAGE_SIZE * 32) [131072 bytes on
+ i386]. The minimum value is PAGE_SIZE. If scatter-gather not supported
+ by adapter then this value is the largest data block that can be
+ read/written by a single scsi command. The user can find the value of
+ PAGE_SIZE by calling getpagesize() defined in unistd.h . */
+
+#define SG_DEFAULT_RETRIES 1
+
+/* Defaults, commented if they differ from original sg driver */
+#define SG_DEF_FORCE_LOW_DMA 0 /* was 1 -> memory below 16MB on i386 */
+#define SG_DEF_FORCE_PACK_ID 0
+#define SG_DEF_KEEP_ORPHAN 0
+#define SG_DEF_RESERVED_SIZE SG_SCATTER_SZ /* load time option */
+
+/* maximum outstanding requests, write() yields EDOM if exceeded */
+#define SG_MAX_QUEUE 16
+
+#define SG_BIG_BUFF SG_DEF_RESERVED_SIZE /* for backward compatibility */
+
+/* Alternate style type names, "..._t" variants preferred */
+typedef struct sg_io_hdr Sg_io_hdr;
+typedef struct sg_io_vec Sg_io_vec;
+typedef struct sg_scsi_id Sg_scsi_id;
+typedef struct sg_req_info Sg_req_info;
+
+
+/* vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv */
+/* The older SG interface based on the 'sg_header' structure follows. */
+/* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ */
+
+#define SG_MAX_SENSE 16 /* this only applies to the sg_header interface */
+
+struct sg_header
+ {
+ /* Length of incoming packet (including header). */
+ int pack_len;
+ /* Maximal length of expected reply. */
+ int reply_len;
+ /* Id number of packet. */
+ int pack_id;
+ /* 0==ok, otherwise error number. */
+ int result;
+ /* Force 12 byte command length for group 6 & 7 commands. */
+ unsigned int twelve_byte:1;
+ /* SCSI status from target. */
+ unsigned int target_status:5;
+ /* Host status (see "DID" codes). */
+ unsigned int host_status:8;
+ /* Driver status+suggestion. */
+ unsigned int driver_status:8;
+ /* Unused. */
+ unsigned int other_flags:10;
+ /* Output in 3 cases:
+ when target_status is CHECK_CONDITION or
+ when target_status is COMMAND_TERMINATED or
+ when (driver_status & DRIVER_SENSE) is true. */
+ unsigned char sense_buffer[SG_MAX_SENSE];
+ };
+
+
+/* IOCTLs: The following are not required (or ignored) when the sg_io_hdr_t
+ interface is used. They are kept for backward compatibility with
+ the original and version 2 drivers. */
+
+#define SG_SET_TIMEOUT 0x2201 /* Set timeout; *(int *)arg==timeout. */
+#define SG_GET_TIMEOUT 0x2202 /* Get timeout; return timeout. */
+
+/* Get/set command queuing state per fd (default is SG_DEF_COMMAND_Q). */
+#define SG_GET_COMMAND_Q 0x2270 /* Yields 0 (queuing off) or 1 (on). */
+#define SG_SET_COMMAND_Q 0x2271 /* Change queuing state with 0 or 1. */
+
+/* Turn on error sense trace (1..8), dump this device to log/console (9)
+ or dump all sg device states ( >9 ) to log/console. */
+#define SG_SET_DEBUG 0x227e /* 0 -> turn off debug */
+
+#define SG_NEXT_CMD_LEN 0x2283 /* Override SCSI command length with given
+ number on the next write() on this file
+ descriptor. */
+
+/* Defaults, commented if they differ from original sg driver */
+#define SG_DEFAULT_TIMEOUT (60*HZ) /* HZ == 'jiffies in 1 second' */
+#define SG_DEF_COMMAND_Q 0 /* command queuing is always on when
+ the new interface is used */
+#define SG_DEF_UNDERRUN_FLAG 0
+
+
+#endif /* scsi/sg.h */