Update.

1999-11-07  Andreas Jaeger  <aj@suse.de>

	* sysdeps/unix/sysv/linux/scsi/scsi_ioctl.h: New file with some
	defines from Linux scsi_ioctl.h header.

	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Added
	scsi_ioctl.h.
	* sysdeps/unix/sysv/linux/Dist: Likewise.

	* sysdeps/unix/sysv/linux/scsi/sg.h: Synced with Linux 2.3.26;
	pretty printed.

	* sysdeps/unix/sysv/linux/scsi/scsi.h (TYPE_ENCLOSURE): Added to
	sync with Linux 2.3.26.

1 files changed, 131 insertions, 19 deletions

diff --git a/sysdeps/unix/sysv/linux/scsi/sg.h b/sysdeps/unix/sysv/linux/scsi/sg.h
index ae7b2cf42d..59e031069e 100644
--- a/sysdeps/unix/sysv/linux/scsi/sg.h
+++ b/sysdeps/unix/sysv/linux/scsi/sg.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 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
@@ -32,30 +32,142 @@
    are then read using the read call.  The same header is used for
    replies; ignore the reply_len field.  */
 
+#define SG_MAX_SENSE	16
+
 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.  */
+   /* 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];
  };
 
-/* ioctl's */
-#define SG_SET_TIMEOUT 0x2201  /* set timeout *(int *)arg==timeout */
-#define SG_GET_TIMEOUT 0x2202  /* get timeout return timeout */
+/* Request information about a specific SG device.  */
+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 unused1;
+  /* Unused, set to 0 for now.  */
+  int unused2;
+};
+
+/* Ioctl's */
+#define SG_SET_TIMEOUT		0x2201	/* Set timeout; *(int *)arg==timeout.  */
+#define SG_GET_TIMEOUT		0x2202	/* Get timeout; return timeout.  */
+
+#define SG_EMULATED_HOST	0x2203	/* True for emulated host adapter (ATAPI). */
+
+/* Used to configure SCSI command transformation layer for ATAPI devices.  */
+#define SG_SET_TRANSFORM	0x2204
+#define SG_GET_TRANSFORM	0x2205
+
+#define SG_SET_RESERVED_SIZE	0x2275  /* Request a new reserved buffer size.  */
+#define SG_GET_RESERVED_SIZE	0x2272  /* Get actual size of reserved buffer */
+
+/* The following ioctl takes a 'sg_scsi_id *' 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 */
+
+/* If SG_SET_FORCE_PACK_ID is set to 1, pack_id is input to read() which
+   will attempt to read that pack_id or block (or return EAGAIN).  If
+   pack_id is -1 then read oldest waiting.  If SG_SET_FORCE_PACK_ID is
+   set to 0 then pack_id gets ignored by read() and the oldest
+   readable is 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().  */
+
+/* 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 */
+
+/* Yields max scatter gather tablesize allowed by current host adapter.  */
+#define SG_GET_SG_TABLESIZE	0x227F	/* 0 implies can't do scatter gather */
+
+/* Control whether sequencing per file descriptor or per device.  */
+#define SG_GET_MERGE_FD		0x2274	/* 0-> per fd, 1-> per device */
+#define SG_SET_MERGE_FD		0x2273	/* Attempt to change sequencing state,
+					   if more than current fd open on device,
+					   will fail with EBUSY.  */
+
+/* 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.  */
+
+/* Get/set whether DMA underrun will cause an error (DID_ERROR).  Currently this
+   only applies to the [much-used] aic7xxx driver.  */
+#define SG_GET_UNDERRUN_FLAG	0x2280	/* Yields 0 (don't flag) or 1 (flag). */
+#define SG_SET_UNDERRUN_FLAG	0x2281	/* Change flag underrun state.  */
+
+#define SG_GET_VERSION_NUM	0x2282	/* Example: version 2.1.34 yields 20134 */
+#define SG_NEXT_CMD_LEN		0x2283	/* Override SCSI command length with given
+					   number on the next write() on this file
+					   descriptor.  */
+
+/* Returns -EBUSY if occupied else takes as input: 0 -> do nothing,
+   1 -> device reset or  2 -> bus reset (may not be activated yet).  */
+#define SG_SCSI_RESET		0x2284
+
+
+/* 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_SCATTER_SZ 		(8 * 4096) /* PAGE_SIZE is not available to user.  */
+
+#define SG_DEFAULT_TIMEOUT	(60 * HZ) /* 1 minute timeout */
+#define SG_DEFAULT_RETRIES	1
 
-#define SG_DEFAULT_TIMEOUT (60*HZ) /* 1 minute timeout */
-#define SG_DEFAULT_RETRIES 1
+/* Defaults, commented if they differ from original sg driver */
+#define SG_DEF_COMMAND_Q 	0
+#define SG_DEF_MERGE_FD		0	/* was 1 -> per device sequencing */
+#define SG_DEF_FORCE_LOW_DMA	0	/* was 1 -> memory below 16MB on i386 */
+#define SG_DEF_FORCE_PACK_ID	0
+#define SG_DEF_UNDERRUN_FLAG	0
+#define SG_DEF_RESERVED_SIZE	SG_SCATTER_SZ
 
-#define SG_MAX_QUEUE 4 /* maximum outstanding request, arbitrary, may be
-			  changed if sufficient DMA buffer room available.  */
+#define SG_MAX_QUEUE 		16	/* Maximum outstanding request, arbitrary,
+					   may be changed if sufficient DMA buffer
+					   room available.  */
 
-#define SG_BIG_BUFF 32768
+#define SG_BIG_BUFF SG_DEF_RESERVED_SIZE  /* for backward compatibility */
 
 #endif	/* scsi/sg.h */