* Written by Julian Elischer (julian@dialix.oz.au)
* 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@dialix.oz.au) Sept 1992
* $Id: sd.c,v 1.8 1993/09/10 18:03:21 ats Exp $
#include <sys/disklabel.h>
#include <scsi/scsi_all.h>
#include <scsi/scsi_disk.h>
#include <scsi/scsiconf.h>
long int sdstrats
,sdqueues
;
#define BOOTRECORDSIGNATURE (0x55aa & 0x00ff)
#define MAKESDDEV(maj, unit, part) (makedev(maj,((unit<<3)+part)))
#define PARTITION(z) (minor(z) & 0x07)
#define UNIT(z) ( (minor(z) >> UNITSHIFT) )
#define WHOLE_DISK(unit) ( (unit << UNITSHIFT) + RAW_PART )
struct buf sd_buf_queue
[NSD
];
struct scsi_xfer
*sd_free_xfer
[NSD
];
int sd_xfer_block_wait
[NSD
];
#define SDVALID 0x02 /* PARAMS LOADED */
#define SDINIT 0x04 /* device has been init'd */
#define SDWAIT 0x08 /* device has someone waiting */
#define SDHAVELABEL 0x10 /* have read the label */
#define SDDOSPART 0x20 /* Have read the DOS partition table */
#define SDWRITEPROT 0x40 /* Device in readonly mode (S/W)*/
struct scsi_switch
*sc_sw
; /* address of scsi low level switch */
int ctlr
; /* so they know which one we want */
int targ
; /* our scsi target ID */
int lu
; /* out scsi lu */
long int ad_info
; /* info about the adapter */
int cmdscount
; /* cmds allowed outstanding by board*/
int wlabel
; /* label is writable */
u_char heads
; /* Number of heads */
u_short cyls
; /* Number of cylinders */
u_char sectors
;/*dubious*/ /* Number of sectors/track */
u_short secsiz
; /* Number of bytes/sector */
u_long disksize
; /* total number sectors */
struct disklabel disklabel
;
struct dos_partition dosparts
[NDOSPART
]; /* DOS view of disk */
int partflags
[MAXPARTITIONS
]; /* per partition flags */
int openparts
; /* one bit for each open partition */
unsigned int sd_start_of_unix
; /* unix vs dos partitions */
static int next_sd_unit
= 0;
/***********************************************************************\
* The routine called by the low level scsi routine when it discovers *
* A device suitable for this driver *
\***********************************************************************/
int sdattach(ctlr
,targ
,lu
,scsi_switch
)
struct scsi_switch
*scsi_switch
;
struct scsi_xfer
*sd_scsi_xfer
;
if(scsi_debug
& PRINTROUTINES
) printf("sdattach: ");
/*******************************************************\
* Check we have the resources for another drive *
\*******************************************************/
printf("Too many scsi disks..(%d > %d) reconfigure kernel\n",(unit
+ 1),NSD
);
printf("sd%d: unit already has storage allocated!\n",unit
);
sd
= sd_data
[unit
] = malloc(sizeof(struct sd_data
),M_DEVBUF
,M_NOWAIT
);
printf("malloc failed in sd.c\n");
bzero(sd
,sizeof(struct sd_data
));
/*******************************************************\
* Store information needed to contact our base driver *
\*******************************************************/
if(sd
->sc_sw
->adapter_info
)
sd
->ad_info
= ( (*(sd
->sc_sw
->adapter_info
))(ctlr
));
sd
->cmdscount
= sd
->ad_info
& AD_INF_MAX_CMDS
;
if(sd
->cmdscount
> SDOUTSTANDING
)
sd
->cmdscount
= SDOUTSTANDING
;
sd_scsi_xfer
= (struct scsi_xfer
*)malloc(sizeof(struct scsi_xfer
) * i
sd_scsi_xfer
->next
= sd_free_xfer
[unit
];
sd_free_xfer
[unit
] = sd_scsi_xfer
;
/*******************************************************\
* Use the subdriver to request information regarding *
* the drive. We cannot use interrupts yet, so the *
* request must specify this. *
\*******************************************************/
sd_get_parms(unit
, SCSI_NOSLEEP
| SCSI_NOMASK
);
printf("sd%d: %dMB (%d total sec), %d cyl, %d head, %d sec, bytes/sec %d\n",
dp
->disksize
/ ((1024L * 1024L) / dp
->secsiz
),
/*******************************************************\
* open the device. Make sure the partition info *
* is a up-to-date as can be. *
\*******************************************************/
struct disk_parms disk_parms
;
if(scsi_debug
& (PRINTROUTINES
| TRACEOPENS
))
printf("sdopen: dev=0x%x (unit %d (of %d),partition %d)\n"
/*******************************************************\
* Check the unit is legal *
\*******************************************************/
/*******************************************************\
* Make sure the disk has been initialised *
* At some point in the future, get the scsi driver *
* to look for a new device if we are not initted *
\*******************************************************/
if (! (sd
->flags
& SDINIT
))
/*******************************************************\
* If it's been invalidated, and not everybody has *
* closed it then forbid re-entry. *
\*******************************************************/
if ((! (sd
->flags
& SDVALID
))
/*******************************************************\
* "unit attention" errors should occur here if the *
* drive has been restarted or the pack changed. *
* just ingnore the result, it's a decoy instruction *
* The error code will act on the error though *
* and invalidate any media information we had. *
\*******************************************************/
sd_test_unit_ready(unit
,0);
/*******************************************************\
* In case it is a funny one, tell it to start *
* not needed for most hard drives (ignore failure) *
\*******************************************************/
sd_start_unit(unit
,SCSI_ERR_OK
|SCSI_SILENT
);
/*******************************************************\
* Check that it is still responding and ok. *
\*******************************************************/
if (sd_test_unit_ready(unit
,0))
if(scsi_debug
& TRACEOPENS
) printf("device not reponding\n");
if(scsi_debug
& TRACEOPENS
)
/*******************************************************\
* Load the physical device parameters *
\*******************************************************/
sd_get_parms(unit
, 0); /* sets SDVALID */
if (sd
->params
.secsiz
!= SECSIZE
) /* XXX One day...*/
printf("sd%d: Can't deal with %d bytes logical blocks\n"
,unit
, sd
->params
.secsiz
);
if(scsi_debug
& TRACEOPENS
)
printf("Params loaded ");
/*******************************************************\
* Load the partition info if not already loaded *
\*******************************************************/
sd_prevent(unit
,PR_PREVENT
,SCSI_ERR_OK
|SCSI_SILENT
);
if((errcode
= sdgetdisklabel(unit
)) && (part
!= RAW_PART
))
sd_prevent(unit
,PR_ALLOW
,SCSI_ERR_OK
|SCSI_SILENT
);
if(scsi_debug
& TRACEOPENS
)
printf("Disklabel loaded ");
/*******************************************************\
* Check the partition is legal *
\*******************************************************/
if ( part
>= MAXPARTITIONS
) {
sd_prevent(unit
,PR_ALLOW
,SCSI_ERR_OK
|SCSI_SILENT
); /* who cares if it fails? */
if(scsi_debug
& TRACEOPENS
)
/*******************************************************\
* Check that the partition exists *
\*******************************************************/
if (( sd
->disklabel
.d_partitions
[part
].p_size
== 0 )
sd_prevent(unit
,PR_ALLOW
,SCSI_ERR_OK
|SCSI_SILENT
); /* who cares if it fails? */
sd
->partflags
[part
] |= SDOPEN
;
sd
->openparts
|= (1 << part
);
if(scsi_debug
& TRACEOPENS
)
printf("open %d %d\n",sdstrats
,sdqueues
);
/*******************************************************\
* Get ownership of a scsi_xfer *
* If need be, sleep on it, until it comes free *
\*******************************************************/
struct scsi_xfer
*sd_get_xs(unit
,flags
)
if(flags
& (SCSI_NOSLEEP
| SCSI_NOMASK
))
if (xs
= sd_free_xfer
[unit
])
sd_free_xfer
[unit
] = xs
->next
;
while (!(xs
= sd_free_xfer
[unit
]))
sd_xfer_block_wait
[unit
]++; /* someone waiting! */
sleep((caddr_t
)&sd_free_xfer
[unit
], PRIBIO
+1);
sd_xfer_block_wait
[unit
]--;
sd_free_xfer
[unit
] = xs
->next
;
/*******************************************************\
* Free a scsi_xfer, wake processes waiting for it *
\*******************************************************/
sd_free_xs(unit
,xs
,flags
)
if (sd_xfer_block_wait
[unit
])
printf("doing a wakeup from NOMASK mode\n");
wakeup((caddr_t
)&sd_free_xfer
[unit
]);
xs
->next
= sd_free_xfer
[unit
];
if (sd_xfer_block_wait
[unit
])
wakeup((caddr_t
)&sd_free_xfer
[unit
]);
xs
->next
= sd_free_xfer
[unit
];
/*******************************************************\
* trim the size of the transfer if needed, *
* basically the smaller of our max and the scsi driver's*
* minphys (note we have no max) *
\*******************************************************/
/* Trim buffer length if buffer-size is bigger than page size */
(*(sd_data
[UNIT(bp
->b_dev
)]->sc_sw
->scsi_minphys
))(bp
);
/*******************************************************\
* Actually translate the requested transfer into *
* one the physical driver can understand *
* The transfer is described by a buf and will include *
* only one physical transfer. *
\*******************************************************/
unit
= UNIT((bp
->b_dev
));
if(scsi_debug
& PRINTROUTINES
) printf("\nsdstrategy ");
if(scsi_debug
& SHOWREQUESTS
) printf("sd%d: %d bytes @ blk%d\n",
unit
,bp
->b_bcount
,bp
->b_blkno
);
/*******************************************************\
* If the device has been made invalid, error out *
\*******************************************************/
if(!(sd
->flags
& SDVALID
))
/*******************************************************\
* "soft" write protect check *
\*******************************************************/
if ((sd
->flags
& SDWRITEPROT
) && (bp
->b_flags
& B_READ
) == 0) {
/*******************************************************\
* If it's a null transfer, return immediatly *
\*******************************************************/
/*******************************************************\
* Decide which unit and partition we are talking about *
* only raw is ok if no label *
\*******************************************************/
if(PARTITION(bp
->b_dev
) != RAW_PART
)
if (!(sd
->flags
& SDHAVELABEL
))
* do bounds checking, adjust transfer. if error, process.
* if end of partition, just return
if (bounds_check_with_label(bp
,&sd
->disklabel
,sd
->wlabel
) <= 0)
/* otherwise, process transfer request */
dp
= &sd_buf_queue
[unit
];
/*******************************************************\
* Place it in the queue of disk activities for this disk*
\*******************************************************/
/*******************************************************\
* Tell the device to get going on the transfer if it's *
* not doing anything, otherwise just wait for completion*
\*******************************************************/
/*******************************************************\
* Correctly set the buf to indicate a completed xfer *
\*******************************************************/
bp
->b_resid
= bp
->b_bcount
;
/***************************************************************\
* sdstart looks to see if there is a buf waiting for the device *
* and that the device is not already busy. If both are true, *
* It dequeues the buf and creates a scsi command to perform the *
* transfer in the buf. The transfer request will call sd_done *
* on completion, which will in turn call this routine again *
* so that the next queued transfer is performed. *
* The bufs are queued by the strategy routine (sdstrategy) *
* This routine is also called after other non-queued requests *
* have been made of the scsi driver, to ensure that the queue *
* continues to be drained. *
* must be called at the correct (highish) spl level *
\***************************************************************/
/* sdstart() is called at SPLSD from sdstrategy and sd_done*/
register struct buf
*bp
= 0;
struct sd_data
*sd
= sd_data
[unit
];
if(scsi_debug
& PRINTROUTINES
) printf("sdstart%d ",unit
);
/*******************************************************\
* Check if the device is already running full capacity *
\*******************************************************/
return; /* none for us, unit already underway */
/*******************************************************\
* there is excess capacity, but a special waits *
* It'll need the adapter as soon as we clear out of the *
* way and let it run (user level wait). *
\*******************************************************/
if(sd_xfer_block_wait
[unit
])
/*******************************************************\
* See if there is a buf with work for us to do.. *
\*******************************************************/
dp
= &sd_buf_queue
[unit
];
if ((bp
= dp
->b_actf
) == NULL
) /* yes, an assign */
dp
->b_actf
= bp
->av_forw
;
/*******************************************************\
* If the device has become invalid, abort all the *
* reads and writes until all files have been closed and *
\*******************************************************/
if(!(sd
->flags
& SDVALID
))
/*******************************************************\
* We have a buf, now we know we are going to go through *
* First, translate the block to absolute *
\*******************************************************/
p
= sd
->disklabel
.d_partitions
+ PARTITION(bp
->b_dev
);
blkno
= bp
->b_blkno
+ p
->p_offset
;
nblk
= (bp
->b_bcount
+ 511) >> 9;
/*******************************************************\
* Fill out the scsi command *
\*******************************************************/
bzero(&cmd
, sizeof(cmd
));
cmd
.op_code
= (bp
->b_flags
& B_READ
)
cmd
.addr_3
= (blkno
& 0xff000000) >> 24;
cmd
.addr_2
= (blkno
& 0xff0000) >> 16;
cmd
.addr_1
= (blkno
& 0xff00) >> 8;
cmd
.addr_0
= blkno
& 0xff;
cmd
.length2
= (nblk
& 0xff00) >> 8;
cmd
.length1
= (nblk
& 0xff);
/*******************************************************\
* Call the routine that chats with the adapter *
* Note: we cannot sleep as we may be an interrupt *
\*******************************************************/
(u_char
*)bp
->b_un
.b_addr
,
SCSI_NOSLEEP
| ((bp
->b_flags
& B_READ
)?
SCSI_DATA_IN
: SCSI_DATA_OUT
))
printf("sd%d: oops not queued",unit
);
/*******************************************************\
* Perform special action on behalf of the user *
* Knows about the internals of this device *
\*******************************************************/
sdioctl(dev_t dev
, int cmd
, caddr_t addr
, int flag
)
/* struct sd_cmd_buf *args;*/
unsigned char unit
, part
;
register struct sd_data
*sd
;
/*******************************************************\
* Find the device that the user is talking about *
\*******************************************************/
if(scsi_debug
& PRINTROUTINES
) printf("sdioctl%d ",unit
);
/*******************************************************\
* If the device is not valid.. abandon ship *
\*******************************************************/
if (!(sd
->flags
& SDVALID
))
*(struct disklabel
*)addr
= sd
->disklabel
;
((struct partinfo
*)addr
)->disklab
= &sd
->disklabel
;
((struct partinfo
*)addr
)->part
=
&sd
->disklabel
.d_partitions
[PARTITION(dev
)];
if ((flag
& FWRITE
) == 0)
error
= setdisklabel(&sd
->disklabel
,
(struct disklabel
*)addr
,
/*(sd->flags & DKFL_BSDLABEL) ? sd->openparts : */0,
sd
->flags
|= SDHAVELABEL
;
sd
->flags
&= ~SDWRITEPROT
;
if ((flag
& FWRITE
) == 0)
sd
->wlabel
= *(int *)addr
;
sd
->flags
&= ~SDWRITEPROT
;
if ((flag
& FWRITE
) == 0)
if ((error
= setdisklabel(&sd
->disklabel
, (struct disklabel
*)addr
, /*(sd->flags & SDHAVELABEL) ? sd->openparts :*/ 0
sd
->flags
|= SDHAVELABEL
; /* ok write will succeed */
/* simulate opening partition 0 so write succeeds */
sd
->openparts
|= (1 << 0); /* XXX */
error
= writedisklabel(dev
, sdstrategy
,
&sd
->disklabel
, sd
->dosparts
);
/*******************************************************\
* Load the label information on the named device *
\*******************************************************/
struct dos_partition
*dos_partition_p
;
struct sd_data
*sd
= sd_data
[unit
];
/*******************************************************\
* If the inflo is already loaded, use it *
\*******************************************************/
if(sd
->flags
& SDHAVELABEL
) return(ESUCCESS
);
bzero(&sd
->disklabel
,sizeof(struct disklabel
));
/*******************************************************\
* make partition 3 the whole disk in case of failure *
* for historical reasons, make part a same as raw part *
\*******************************************************/
sd
->disklabel
.d_partitions
[0].p_offset
= 0;
sd
->disklabel
.d_partitions
[0].p_size
= sd
->params
.disksize
;
sd
->disklabel
.d_partitions
[RAW_PART
].p_offset
= 0;
sd
->disklabel
.d_partitions
[RAW_PART
].p_size
= sd
->params
.disksize
;
sd
->disklabel
.d_npartitions
= MAXPARTITIONS
;
sd
->disklabel
.d_secsize
= 512; /* as long as it's not 0 */
sd
->disklabel
.d_ntracks
= sd
->params
.heads
;
sd
->disklabel
.d_nsectors
= sd
->params
.sectors
;
sd
->disklabel
.d_ncylinders
= sd
->params
.cyls
;
sd
->disklabel
.d_secpercyl
= sd
->params
.heads
* sd
->params
.sectors
;
if (sd
->disklabel
.d_secpercyl
== 0)
sd
->disklabel
.d_secpercyl
= 100;
/* as long as it's not 0 */
/* readdisklabel divides by it (?)*/
/*******************************************************\
* Call the generic disklabel extraction routine *
\*******************************************************/
if(errstring
= readdisklabel(makedev(0 ,(unit
<<UNITSHIFT
)+3)
printf("sd%d: %s\n",unit
, errstring
);
sd
->flags
|= SDHAVELABEL
; /* WE HAVE IT ALL NOW */
/*******************************************************\
* Find out from the device what it's capacity is *
\*******************************************************/
struct scsi_read_cap_data rdcap
;
struct scsi_read_capacity scsi_cmd
;
/*******************************************************\
* make up a scsi command and ask the scsi driver to do *
\*******************************************************/
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= READ_CAPACITY
;
/*******************************************************\
* If the command works, interpret the result as a 4 byte*
\*******************************************************/
flags
| SCSI_DATA_IN
) != 0)
printf("sd%d: could not get size\n", unit
);
size
= rdcap
.addr_0
+ 1 ;
size
+= rdcap
.addr_1
<< 8;
size
+= rdcap
.addr_2
<< 16;
size
+= rdcap
.addr_3
<< 24;
/*******************************************************\
* Get scsi driver to send a "are you ready?" command *
\*******************************************************/
sd_test_unit_ready(unit
,flags
)
struct scsi_test_unit_ready scsi_cmd
;
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= TEST_UNIT_READY
;
return (sd_scsi_cmd(unit
,
/*******************************************************\
* Prevent or allow the user to remove the tape *
* Don't change this status if any partitions are open *
\*******************************************************/
sd_prevent(unit
,type
,flags
)
struct scsi_prevent scsi_cmd
;
if(sd_data
[unit
]->openparts
) return;
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= PREVENT_ALLOW
;
return (sd_scsi_cmd(unit
,
/*******************************************************\
* Get scsi driver to send a "start up" command *
\*******************************************************/
sd_start_unit(unit
,flags
)
struct scsi_start_stop scsi_cmd
;
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= START_STOP
;
scsi_cmd
.how
= SSS_START
;
return (sd_scsi_cmd(unit
,
/*******************************************************\
* Tell the device to map out a defective block *
\*******************************************************/
sd_reassign_blocks(unit
,block
)
struct scsi_reassign_blocks scsi_cmd
;
struct scsi_reassign_blocks_data rbdata
;
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
bzero(&rbdata
, sizeof(rbdata
));
scsi_cmd
.op_code
= REASSIGN_BLOCKS
;
rbdata
.length_lsb
= sizeof(rbdata
.defect_descriptor
[0]);
rbdata
.defect_descriptor
[0].dlbaddr_3
= ((block
>> 24) & 0xff);
rbdata
.defect_descriptor
[0].dlbaddr_2
= ((block
>> 16) & 0xff);
rbdata
.defect_descriptor
[0].dlbaddr_1
= ((block
>> 8) & 0xff);
rbdata
.defect_descriptor
[0].dlbaddr_0
= ((block
) & 0xff);
#define b2tol(a) (((unsigned)(a##_1) << 8) + (unsigned)a##_0 )
/*******************************************************\
* Get the scsi driver to send a full inquiry to the *
* device and use the results to fill out the disk *
\*******************************************************/
int sd_get_parms(unit
, flags
)
struct sd_data
*sd
= sd_data
[unit
];
struct disk_parms
*disk_parms
= &sd
->params
;
struct scsi_mode_sense scsi_cmd
;
struct scsi_mode_sense_data
struct scsi_mode_header header
;
struct blk_desc blk_desc
;
/*******************************************************\
* First check if we have it all loaded *
\*******************************************************/
if(sd
->flags
& SDVALID
) return(0);
/*******************************************************\
* First do a mode sense page 3 *
\*******************************************************/
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= MODE_SENSE
;
/*******************************************************\
* do the command, but we don't need the results *
* just print them for our interest's sake *
\*******************************************************/
flags
| SCSI_DATA_IN
) != 0)
printf("sd%d: could not mode sense (3)\n", unit
);
printf("unit %d: %d trk/zone, %d alt_sec/zone, %d alt_trk/zone, %d alt_trk/lun\n",
b2tol(scsi_sense
.pages
.disk_format
.trk_z
),
b2tol(scsi_sense
.pages
.disk_format
.alt_sec
),
b2tol(scsi_sense
.pages
.disk_format
.alt_trk_z
),
b2tol(scsi_sense
.pages
.disk_format
.alt_trk_v
));
printf(" %d sec/trk, %d bytes/sec, %d interleave, %d %d bytes/log_blk\n",
b2tol(scsi_sense
.pages
.disk_format
.ph_sec_t
),
b2tol(scsi_sense
.pages
.disk_format
.bytes_s
),
b2tol(scsi_sense
.pages
.disk_format
.interleave
),
_3btol(scsi_sense
.blk_desc
.blklen
));
/*******************************************************\
* do a "mode sense page 4" *
\*******************************************************/
bzero(&scsi_cmd
, sizeof(scsi_cmd
));
scsi_cmd
.op_code
= MODE_SENSE
;
/*******************************************************\
* If the command worked, use the results to fill out *
* the parameter structure *
\*******************************************************/
flags
| SCSI_DATA_IN
) != 0)
printf("sd%d could not mode sense (4).", unit
);
printf(" Using ficticious geometry\n");
* use adaptec standard ficticious geometry
* this depends on which controller (e.g. 1542C is
* different. but we have to put SOMETHING here..)
sectors
= sd_size(unit
, flags
);
disk_parms
->sectors
= 32;
disk_parms
->cyls
= sectors
/(64 * 32);
disk_parms
->secsiz
= SECSIZE
;
disk_parms
->disksize
= sectors
;
printf(" %d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n",
_3btol(&scsi_sense
.pages
.rigid_geometry
.ncyl_2
),
scsi_sense
.pages
.rigid_geometry
.nheads
,
b2tol(scsi_sense
.pages
.rigid_geometry
.st_cyl_wp
),
b2tol(scsi_sense
.pages
.rigid_geometry
.st_cyl_rwc
),
b2tol(scsi_sense
.pages
.rigid_geometry
.land_zone
));
/*******************************************************\
* KLUDGE!!(for zone recorded disks) *
* give a number of sectors so that sec * trks * cyls *
* can lead to wasted space! THINK ABOUT THIS ! *
\*******************************************************/
disk_parms
->heads
= scsi_sense
.pages
.rigid_geometry
.nheads
;
disk_parms
->cyls
= _3btol(&scsi_sense
.pages
.rigid_geometry
.ncyl_2
);
disk_parms
->secsiz
= _3btol(&scsi_sense
.blk_desc
.blklen
);
sectors
= sd_size(unit
, flags
);
disk_parms
->disksize
= sectors
;
sectors
/= (disk_parms
->heads
* disk_parms
->cyls
);
disk_parms
->sectors
= sectors
; /* dubious on SCSI*//*XXX*/
/*******************************************************\
* close the device.. only called if we are the LAST *
* occurence of an open device *
* convenient now but usually a pain *
\*******************************************************/
unsigned char unit
, part
;
unsigned int old_priority
;
sd
->partflags
[part
] &= ~SDOPEN
;
sd
->openparts
&= ~(1 << part
);
sd_prevent(unit
,PR_ALLOW
,SCSI_SILENT
|SCSI_ERR_OK
);
/*******************************************************\
* This routine is called by the scsi interrupt when *
* the transfer is complete.
\*******************************************************/
if(scsi_debug
& PRINTROUTINES
) printf("sd_done%d ",unit
);
if (! (xs
->flags
& INUSE
))
panic("scsi_xfer not in use!");
if((bp
= xs
->bp
) == NULL
)
/***********************************************\
* if it's a normal user level request, then ask *
* The user level code to handle error checking *
* rather than doing it here at interrupt time *
\***********************************************/
/***********************************************\
* If it has a buf, we might be working with *
* a request from the buffer cache or some other *
* piece of code that requires us to process *
* errors right now, despite cost *
\***********************************************/
retval
= (sd_interpret_sense(unit
,xs
));
/*should somehow arange for a 1 sec delay here (how?)*/
/***********************************************\
* If we can, resubmit it to the adapter. *
\***********************************************/
if ( (*(sd_data
[unit
]->sc_sw
->scsi_cmd
))(xs
)
{ /* don't wake the job, ok? */
printf("sd%d: unknown error category from scsi driver\n"
/*******************************\
* tell the owner we're done *
* then free our resources *
* and see if there's more work *
\*******************************/
sdstart(unit
); /* If there's anything waiting.. do it */
/*******************************************************\
* ask the scsi driver to perform a command for us. *
* Call it through the switch table, and tell it which *
* sub-unit we want, and what target and lu we wish to *
* talk to. Also tell it where to find the command *
* Also tell it where to read/write the data, and how *
* long the data is supposed to be. If we have a buf *
* to associate with the transfer, we need that too. *
\*******************************************************/
int sd_scsi_cmd(unit
,scsi_cmd
,cmdlen
,data_addr
,datalen
,timeout
,bp
,flags
)
struct scsi_generic
*scsi_cmd
;
struct sd_data
*sd
= sd_data
[unit
];
if(scsi_debug
& PRINTROUTINES
) printf("\nsd_scsi_cmd%d ",unit
);
if(!(sd
->sc_sw
)) /* If we have a scsi driver */
{/* How we got here is anyone's guess */
printf("sd%d: not set up\n",unit
);
xs
= sd_get_xs(unit
,flags
); /* should wait unless booting */
printf("sd_scsi_cmd%d: controller busy"
" (this should never happen)\n",unit
);
/*******************************************************\
* Fill out the scsi_xfer structure *
\*******************************************************/
xs
->flags
= INUSE
| flags
;
xs
->retries
= SD_RETRIES
;
retry
: xs
->error
= XS_NOERROR
;
/*******************************************************\
* Do the transfer. If we are polling we will return: *
* COMPLETE, Was poll, and sd_done has been called *
* HAD_ERROR, Was poll and an error was encountered *
* TRY_AGAIN_LATER, Adapter short resources, try again *
* if under full steam (interrupts) it will return: *
* SUCCESSFULLY_QUEUED, will do a wakeup when complete *
* HAD_ERROR, had an erro before it could queue *
* TRY_AGAIN_LATER, (as for polling) *
* After the wakeup, we must still check if it succeeded *
* If we have a bp however, all the error proccessing *
* and the buffer code both expect us to return straight *
* to them, so as soon as the command is queued, return *
\*******************************************************/
retval
= (*(sd
->sc_sw
->scsi_cmd
))(xs
);
if(bp
) return retval
; /* will sleep (or not) elsewhere */
/*******************************************************\
* Only here for non I/O cmds. It's cheaper to process *
* the error status here than at interrupt time so *
* sd_done will have done nothing except wake us up. *
\*******************************************************/
case SUCCESSFULLY_QUEUED
:
while(!(xs
->flags
& ITSDONE
))
/* fall through to check success of completed command */
case XS_NOERROR
: /* nearly always hit this one */
retval
= (sd_interpret_sense(unit
,xs
));
/* should sleep 1 sec here */
printf("sd%d: unknown error category from scsi driver\n"
case COMPLETE
: /* Polling command completed ok */
case TRY_AGAIN_LATER
: /* adapter resource shortage */
/* should sleep 1 sec here */
/*******************************************************\
* we have finished with the xfer stuct, free it and *
* check if anyone else needs to be started up. *
\*******************************************************/
sd_free_xs(unit
,xs
,flags
);
sdstart(unit
); /* check queue */
/***************************************************************\
* Look at the returned sense and act on the error and detirmine *
* The unix error number to pass back... (0 = report no error) *
\***************************************************************/
int sd_interpret_sense(unit
,xs
)
struct scsi_sense_data
*sense
;
/***************************************************************\
* If the flags say errs are ok, then always return ok. *
\***************************************************************/
if (xs
->flags
& SCSI_ERR_OK
) return(ESUCCESS
);
silent
= (xs
->flags
& SCSI_SILENT
);
info
= ((sense
->ext
.extended
.info
[0] <<24)|
(sense
->ext
.extended
.info
[1] <<16)|
(sense
->ext
.extended
.info
[2] <<8)|
(sense
->ext
.extended
.info
[3] ));
switch(sense
->error_code
& SSD_ERRCODE
)
key
=sense
->ext
.extended
.flags
& SSD_KEY
;
printf("sd%d: soft error(corrected) ", unit
);
if(sense
->error_code
& SSD_ERRCODE_VALID
)
printf("block no. %d (decimal)",info
);
if(!silent
)printf("sd%d: not ready\n ",
printf("sd%d: medium error ", unit
);
if(sense
->error_code
& SSD_ERRCODE_VALID
)
printf("block no. %d (decimal)",info
);
if(!silent
)printf("sd%d: non-media hardware failure\n ",
if(!silent
)printf("sd%d: illegal request\n ",
/***********************************************\
* If we are not open, then this is not an error *
* as we don't have state yet. Either way, make *
* sure that we don't have any residual state *
\***********************************************/
if(!silent
)printf("sd%d: Unit attention.\n ", unit
);
sd_data
[unit
]->flags
&= ~(SDVALID
| SDHAVELABEL
);
if (sd_data
[unit
]->openparts
)
return(ESUCCESS
); /* not an error if nothing's open */
printf("sd%d: attempted protection violation ",
if(sense
->error_code
& SSD_ERRCODE_VALID
)
printf("block no. %d (decimal)\n",info
);
printf("sd%d: block wrong state (format?)\n ",
if(sense
->error_code
& SSD_ERRCODE_VALID
)
printf("block no. %d (decimal)\n",info
);
if(!silent
)printf("sd%d: vendor unique\n",
if(!silent
)printf("sd%d: copy aborted\n ",
if(!silent
)printf("sd%d: command aborted\n ",
printf("sd%d: search returned\n ",
if(sense
->error_code
& SSD_ERRCODE_VALID
)
printf("block no. %d (decimal)\n",info
);
if(!silent
)printf("sd%d: volume overflow\n ",
printf("sd%d: verify miscompare\n ",
if(sense
->error_code
& SSD_ERRCODE_VALID
)
printf("block no. %d (decimal)\n",info
);
if(!silent
)printf("sd%d: unknown error key\n ",
if(!silent
)printf("sd%d: code %d\n",
sense
->error_code
& SSD_ERRCODE
);
if(sense
->error_code
& SSD_ERRCODE_VALID
)
if(!silent
)printf("block no. %d (decimal)\n",
(sense
->ext
.unextended
.blockhi
<<16)
+ (sense
->ext
.unextended
.blockmed
<<8)
+ (sense
->ext
.unextended
.blocklow
));
int unit
= UNIT(dev
), part
= PARTITION(dev
), val
;
if((sd
->flags
& SDINIT
) == 0) return(-1);
if (sd
== 0 || (sd
->flags
& SDHAVELABEL
) == 0)
val
= sdopen (MAKESDDEV(major(dev
), unit
, RAW_PART
), FREAD
, S_IFBLK
, 0);
if ( val
!= 0 || sd
->flags
& SDWRITEPROT
)
return((int)sd
->disklabel
.d_partitions
[part
].p_size
);
/***********************************************************************\
* dump all of physical memory into the partition specified, starting *
* at offset 'dumplo' into the partition. *
\***********************************************************************/
static struct scsi_xfer sx
;
#define MAXTRANSFER 8 /* 1 page at a time */
sddump(dev_t dev
) /* dump core after a system crash */
register struct sd_data
*sd
; /* disk unit to do the IO */
long num
; /* number of sectors to write */
long blkoff
, blknum
, blkcnt
;
static sddoingadump
= 0 ;
extern caddr_t CADDR1
; /* map the page we are about to write, here*/
struct scsi_xfer
*xs
= &sx
;
addr
= (char *) 0; /* starting address */
/* toss any characters present prior to dump */
/* size of memory to dump */
unit
= UNIT(dev
); /* eventually support floppies? */
part
= PARTITION(dev
); /* file system */
/* check for acceptable drive number */
if (unit
>= NSD
) return(ENXIO
); /* 31 Jul 92*/
/* was it ever initialized etc. ? */
if (!(sd
->flags
& SDINIT
)) return (ENXIO
);
if (sd
->flags
& SDVALID
!= SDVALID
) return (ENXIO
) ;
if (sd
->flags
& SDWRITEPROT
) return (ENXIO
);
/* Convert to disk sectors */
num
= (u_long
) num
* NBPG
/ sd
->disklabel
.d_secsize
;
/* check if controller active */
if (sddoingadump
) return(EFAULT
);
nblocks
= sd
->disklabel
.d_partitions
[part
].p_size
;
blkoff
= sd
->disklabel
.d_partitions
[part
].p_offset
;
/* check transfer bounds against partition size */
if ((dumplo
< 0) || ((dumplo
+ num
) > nblocks
))
blknum
= dumplo
+ blkoff
;
if (blkcnt
> MAXTRANSFER
) blkcnt
= MAXTRANSFER
;
/*******************************************************\
* Fill out the scsi command *
\*******************************************************/
bzero(&cmd
, sizeof(cmd
));
cmd
.addr_3
= (blknum
& 0xff000000) >> 24;
cmd
.addr_2
= (blknum
& 0xff0000) >> 16;
cmd
.addr_1
= (blknum
& 0xff00) >> 8;
cmd
.addr_0
= blknum
& 0xff;
cmd
.length2
= (blkcnt
& 0xff00) >> 8;
cmd
.length1
= (blkcnt
& 0xff);
/*******************************************************\
* Fill out the scsi_xfer structure *
* Note: we cannot sleep as we may be an interrupt *
\*******************************************************/
xs
->flags
|= SCSI_NOMASK
|SCSI_NOSLEEP
|INUSE
;
xs
->retries
= SD_RETRIES
;
xs
->timeout
= 10000;/* 10000 millisecs for a disk !*/
xs
->cmd
= (struct scsi_generic
*)&cmd
;
xs
->cmdlen
= sizeof(cmd
);
xs
->resid
= blkcnt
* 512;
xs
->data
= (u_char
*)CADDR1
;
xs
->datalen
= blkcnt
* 512;
/*******************************************************\
* Pass all this info to the scsi driver. *
\*******************************************************/
retval
= (*(sd
->sc_sw
->scsi_cmd
))(xs
);
case SUCCESSFULLY_QUEUED
:
return(ENXIO
); /* we said not to sleep! */
return(ENXIO
); /* we said not to sleep! */
/* lets just talk about this first...*/
printf ("sd%d: dump addr 0x%x, blk %d\n",unit
,addr
,blknum
);
if ((unsigned)addr
% (1024*1024) == 0) printf("%d ", num
/2048) ;
(int) addr
+= 512 * MAXTRANSFER
;
/* operator aborting dump? */
printf("\nsddump() -- not implemented\n");
DELAY(20000000); /* 20 seconds */