NetBSD/sys/scsi/scsiconf.h

445 lines
14 KiB
C

/* $NetBSD: scsiconf.h,v 1.30 1996/07/05 16:19:12 christos Exp $ */
/*
* Copyright (c) 1993, 1994, 1995 Charles Hannum. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Originally written by Julian Elischer (julian@tfs.com)
* for TRW Financial Systems for use under the MACH(2.5) operating system.
*
* TRW Financial Systems, in accordance with their agreement with Carnegie
* Mellon University, makes this software available to CMU to distribute
* or use in any manner that they see fit as long as this message is kept with
* the software. For this reason TFS also grants any other persons or
* organisations permission to use or modify this software.
*
* TFS supplies this software to be publicly redistributed
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*/
#ifndef SCSI_SCSICONF_H
#define SCSI_SCSICONF_H 1
typedef int boolean;
#include <sys/queue.h>
#include <machine/cpu.h>
#include <scsi/scsi_debug.h>
/*
* The following documentation tries to describe the relationship between the
* various structures defined in this file:
*
* each adapter type has a scsi_adapter struct. This describes the adapter and
* identifies routines that can be called to use the adapter.
* each device type has a scsi_device struct. This describes the device and
* identifies routines that can be called to use the device.
* each existing device position (scsibus + target + lun)
* can be described by a scsi_link struct.
* Only scsi positions that actually have devices, have a scsi_link
* structure assigned. so in effect each device has scsi_link struct.
* The scsi_link structure contains information identifying both the
* device driver and the adapter driver for that position on that scsi bus,
* and can be said to 'link' the two.
* each individual scsi bus has an array that points to all the scsi_link
* structs associated with that scsi bus. Slots with no device have
* a NULL pointer.
* each individual device also knows the address of it's own scsi_link
* structure.
*
* -------------
*
* The key to all this is the scsi_link structure which associates all the
* other structures with each other in the correct configuration. The
* scsi_link is the connecting information that allows each part of the
* scsi system to find the associated other parts.
*/
struct buf;
struct scsi_xfer;
/*
* These entrypoints are called by the high-end drivers to get services from
* whatever low-end drivers they are attached to each adapter type has one of
* these statically allocated.
*/
struct scsi_adapter {
int (*scsi_cmd) __P((struct scsi_xfer *));
void (*scsi_minphys) __P((struct buf *));
int (*open_target_lu) __P((void));
int (*close_target_lu) __P((void));
};
/*
* return values for scsi_cmd()
*/
#define SUCCESSFULLY_QUEUED 0
#define TRY_AGAIN_LATER 1
#define COMPLETE 2
#define ESCAPE_NOT_SUPPORTED 3
/*
* These entry points are called by the low-end drivers to get services from
* whatever high-end drivers they are attached to. Each device type has one
* of these statically allocated.
*/
struct scsi_device {
int (*err_handler) __P((struct scsi_xfer *));
/* returns -1 to say err processing done */
void (*start) __P((void *));
int (*async) __P((void));
/*
* When called with `0' as the second argument, we expect status
* back from the upper-level driver. When called with a `1',
* we're simply notifying the upper-level driver that the command
* is complete and expect no status back.
*/
int (*done) __P((struct scsi_xfer *, int));
};
/*
* This structure describes the connection between an adapter driver and
* a device driver, and is used by each to call services provided by
* the other, and to allow generic scsi glue code to call these services
* as well.
*/
struct scsi_link {
u_int8_t scsibus; /* the Nth scsibus */
u_int8_t target; /* targ of this dev */
u_int8_t lun; /* lun of this dev */
u_int8_t adapter_target; /* what are we on the scsi bus */
u_int8_t openings; /* available operations */
u_int8_t active; /* operations in progress */
u_int8_t flags; /* flags that all devices have */
#define SDEV_REMOVABLE 0x01 /* media is removable */
#define SDEV_MEDIA_LOADED 0x02 /* device figures are still valid */
#define SDEV_WAITING 0x04 /* a process is waiting for this */
#define SDEV_OPEN 0x08 /* at least 1 open session */
#define SDEV_DBX 0xf0 /* debuging flags (scsi_debug.h) */
u_int8_t quirks; /* per-device oddities */
#define SDEV_AUTOSAVE 0x01 /* do implicit SAVEDATAPOINTER on disconnect */
#define SDEV_NOSYNCWIDE 0x02 /* does not grok SDTR or WDTR */
#define SDEV_NOLUNS 0x04 /* does not grok LUNs */
#define SDEV_FORCELUNS 0x08 /* prehistoric drive/ctlr groks LUNs */
#define SDEV_NOMODESENSE 0x10 /* removable media/optical drives */
struct scsi_device *device; /* device entry points etc. */
void *device_softc; /* needed for call to foo_start */
struct scsi_adapter *adapter; /* adapter entry points etc. */
void *adapter_softc; /* needed for call to foo_scsi_cmd */
};
/*
* This describes matching information for scsi_inqmatch(). The more things
* match, the higher the configuration priority.
*/
struct scsi_inquiry_pattern {
u_int8_t type;
boolean removable;
char *vendor;
char *product;
char *revision;
};
/*
* One of these is allocated and filled in for each scsi bus.
* it holds pointers to allow the scsi bus to get to the driver
* That is running each LUN on the bus
* it also has a template entry which is the prototype struct
* supplied by the adapter driver, this is used to initialise
* the others, before they have the rest of the fields filled in
*/
struct scsibus_softc {
struct device sc_dev;
struct scsi_link *adapter_link; /* prototype supplied by adapter */
struct scsi_link *sc_link[8][8];
u_int8_t moreluns;
};
/*
* This is used to pass information from the high-level configuration code
* to the device-specific drivers.
*/
struct scsibus_attach_args {
struct scsi_link *sa_sc_link;
struct scsi_inquiry_data *sa_inqbuf;
};
/*
* Each scsi transaction is fully described by one of these structures
* It includes information about the source of the command and also the
* device and adapter for which the command is destined.
* (via the scsi_link structure)
*/
struct scsi_xfer {
LIST_ENTRY(scsi_xfer) free_list;
int flags;
struct scsi_link *sc_link; /* all about our device and adapter */
int retries; /* the number of times to retry */
int timeout; /* in milliseconds */
struct scsi_generic *cmd; /* The scsi command to execute */
int cmdlen; /* how long it is */
u_char *data; /* dma address OR a uio address */
int datalen; /* data len (blank if uio) */
int resid; /* how much buffer was not touched */
int error; /* an error value */
struct buf *bp; /* If we need to associate with a buf */
struct scsi_sense_data sense; /* 32 bytes*/
/*
* Believe it or not, Some targets fall on the ground with
* anything but a certain sense length.
*/
int req_sense_length; /* Explicit request sense length */
u_int8_t status; /* SCSI status */
struct scsi_generic cmdstore; /* stash the command in here */
};
/*
* Per-request Flag values
*/
#define SCSI_NOSLEEP 0x0001 /* don't sleep */
#define SCSI_POLL 0x0002 /* poll for completion */
#define SCSI_AUTOCONF 0x0003 /* shorthand for SCSI_POLL | SCSI_NOSLEEP */
#define SCSI_USER 0x0004 /* Is a user cmd, call scsi_user_done */
#define ITSDONE 0x0008 /* the transfer is as done as it gets */
#define INUSE 0x0010 /* The scsi_xfer block is in use */
#define SCSI_SILENT 0x0020 /* don't announce NOT READY or MEDIA CHANGE */
#define SCSI_IGNORE_NOT_READY 0x0040 /* ignore NOT READY */
#define SCSI_IGNORE_MEDIA_CHANGE 0x0080 /* ignore MEDIA CHANGE */
#define SCSI_IGNORE_ILLEGAL_REQUEST 0x0100 /* ignore ILLEGAL REQUEST */
#define SCSI_RESET 0x0200 /* Reset the device in question */
#define SCSI_DATA_UIO 0x0400 /* The data address refers to a UIO */
#define SCSI_DATA_IN 0x0800 /* expect data to come INTO memory */
#define SCSI_DATA_OUT 0x1000 /* expect data to flow OUT of memory */
#define SCSI_TARGET 0x2000 /* This defines a TARGET mode op. */
#define SCSI_ESCAPE 0x4000 /* Escape operation */
/*
* Escape op codes. This provides an extensible setup for operations
* that are not scsi commands. They are intended for modal operations.
*/
#define SCSI_OP_TARGET 0x0001
#define SCSI_OP_RESET 0x0002
#define SCSI_OP_BDINFO 0x0003
/*
* Error values an adapter driver may return
*/
#define XS_NOERROR 0 /* there is no error, (sense is invalid) */
#define XS_SENSE 1 /* Check the returned sense for the error */
#define XS_DRIVER_STUFFUP 2 /* Driver failed to perform operation */
#define XS_SELTIMEOUT 3 /* The device timed out.. turned off? */
#define XS_TIMEOUT 4 /* The Timeout reported was caught by SW */
#define XS_BUSY 5 /* The device busy, try again later? */
caddr_t scsi_inqmatch __P((struct scsi_inquiry_data *, caddr_t, int, int, int *));
struct scsi_xfer *scsi_get_xs __P((struct scsi_link *, int));
void scsi_free_xs __P((struct scsi_xfer *, int));
int scsi_execute_xs __P((struct scsi_xfer *));
u_long scsi_size __P((struct scsi_link *, int));
int scsi_test_unit_ready __P((struct scsi_link *, int));
int scsi_change_def __P((struct scsi_link *, int));
int scsi_inquire __P((struct scsi_link *, struct scsi_inquiry_data *, int));
int scsi_prevent __P((struct scsi_link *, int, int));
int scsi_start __P((struct scsi_link *, int, int));
void scsi_done __P((struct scsi_xfer *));
void scsi_user_done __P((struct scsi_xfer *));
int scsi_scsi_cmd __P((struct scsi_link *, struct scsi_generic *,
int cmdlen, u_char *data_addr,
int datalen, int retries,
int timeout, struct buf *bp,
int flags));
int scsi_do_ioctl __P((struct scsi_link *, dev_t, u_long, caddr_t, int, struct proc *));
void sc_print_addr __P((struct scsi_link *));
void show_scsi_xs __P((struct scsi_xfer *));
void show_scsi_cmd __P((struct scsi_xfer *));
void show_mem __P((u_char *, int));
int scsi_probe_busses __P((int, int, int));
void scsi_strvis __P((u_char *, u_char *, int));
static __inline void _lto2b __P((u_int32_t val, u_int8_t *bytes));
static __inline void _lto3b __P((u_int32_t val, u_int8_t *bytes));
static __inline void _lto4b __P((u_int32_t val, u_int8_t *bytes));
static __inline u_int32_t _2btol __P((u_int8_t *bytes));
static __inline u_int32_t _3btol __P((u_int8_t *bytes));
static __inline u_int32_t _4btol __P((u_int8_t *bytes));
static __inline void _lto2l __P((u_int32_t val, u_int8_t *bytes));
static __inline void _lto3l __P((u_int32_t val, u_int8_t *bytes));
static __inline void _lto4l __P((u_int32_t val, u_int8_t *bytes));
static __inline u_int32_t _2ltol __P((u_int8_t *bytes));
static __inline u_int32_t _3ltol __P((u_int8_t *bytes));
static __inline u_int32_t _4ltol __P((u_int8_t *bytes));
static __inline void
_lto2b(val, bytes)
u_int32_t val;
u_int8_t *bytes;
{
bytes[0] = (val >> 8) & 0xff;
bytes[1] = val & 0xff;
}
static __inline void
_lto3b(val, bytes)
u_int32_t val;
u_int8_t *bytes;
{
bytes[0] = (val >> 16) & 0xff;
bytes[1] = (val >> 8) & 0xff;
bytes[2] = val & 0xff;
}
static __inline void
_lto4b(val, bytes)
u_int32_t val;
u_int8_t *bytes;
{
bytes[0] = (val >> 24) & 0xff;
bytes[1] = (val >> 16) & 0xff;
bytes[2] = (val >> 8) & 0xff;
bytes[3] = val & 0xff;
}
static __inline u_int32_t
_2btol(bytes)
u_int8_t *bytes;
{
register u_int32_t rv;
rv = (bytes[0] << 8) |
bytes[1];
return (rv);
}
static __inline u_int32_t
_3btol(bytes)
u_int8_t *bytes;
{
register u_int32_t rv;
rv = (bytes[0] << 16) |
(bytes[1] << 8) |
bytes[2];
return (rv);
}
static __inline u_int32_t
_4btol(bytes)
u_int8_t *bytes;
{
register u_int32_t rv;
rv = (bytes[0] << 24) |
(bytes[1] << 16) |
(bytes[2] << 8) |
bytes[3];
return (rv);
}
static __inline void
_lto2l(val, bytes)
u_int32_t val;
u_int8_t *bytes;
{
bytes[0] = val & 0xff;
bytes[1] = (val >> 8) & 0xff;
}
static __inline void
_lto3l(val, bytes)
u_int32_t val;
u_int8_t *bytes;
{
bytes[0] = val & 0xff;
bytes[1] = (val >> 8) & 0xff;
bytes[2] = (val >> 16) & 0xff;
}
static __inline void
_lto4l(val, bytes)
u_int32_t val;
u_int8_t *bytes;
{
bytes[0] = val & 0xff;
bytes[1] = (val >> 8) & 0xff;
bytes[2] = (val >> 16) & 0xff;
bytes[3] = (val >> 24) & 0xff;
}
static __inline u_int32_t
_2ltol(bytes)
u_int8_t *bytes;
{
register u_int32_t rv;
rv = bytes[0] |
(bytes[1] << 8);
return (rv);
}
static __inline u_int32_t
_3ltol(bytes)
u_int8_t *bytes;
{
register u_int32_t rv;
rv = bytes[0] |
(bytes[1] << 8) |
(bytes[2] << 16);
return (rv);
}
static __inline u_int32_t
_4ltol(bytes)
u_int8_t *bytes;
{
register u_int32_t rv;
rv = bytes[0] |
(bytes[1] << 8) |
(bytes[2] << 16) |
(bytes[3] << 24);
return (rv);
}
#endif /* SCSI_SCSICONF_H */