static void scsi_capacity_enter(struct scsi_dev *dev) {
struct scsi_cmd cmd = scsi_cmd_template_cap10;
cmd.scmd_obuf = dev->scsi_data_scratchpad;
cmd.scmd_olen = sizeof(struct scsi_data_cap10);
scsi_do_cmd(dev, &cmd);
}
static void scsi_sense_enter(struct scsi_dev *dev) {
struct scsi_cmd cmd = scsi_cmd_template_sense;
cmd.scmd_obuf = dev->scsi_data_scratchpad;
cmd.scmd_olen = sizeof(struct scsi_data_sense);
scsi_do_cmd(dev, &cmd);
}
/* Flush the write buffer */
static int flush_write_buffer(int dev)
{
int offset, transfer, blks;
int result;
unsigned char cmd[10];
Scsi_Cmnd *SCpnt;
#if ST_WRITE_THRESHOLD_BLOCKS < ST_BUFFER_BLOCKS
if (scsi_tapes[dev].buffer->writing) {
write_behind_check(dev);
if (scsi_tapes[dev].buffer->last_result) {
#ifdef DEBUG
printk("st%d: Async write error %x.\n", dev,
scsi_tapes[dev].buffer->last_result);
#endif
return (-EIO);
}
}
#endif
result = 0;
if (scsi_tapes[dev].dirty==1) {
SCpnt = allocate_device(NULL, scsi_tapes[dev].device->index, 1);
offset = scsi_tapes[dev].buffer->buffer_bytes;
transfer = ((offset + scsi_tapes[dev].block_size - 1) /
scsi_tapes[dev].block_size) * scsi_tapes[dev].block_size;
#ifdef DEBUG
printk("st%d: Flushing %d bytes.\n", dev, transfer);
#endif
memset(scsi_tapes[dev].buffer->b_data + offset, 0, transfer - offset);
SCpnt->sense_buffer[0] = 0;
memset(cmd, 0, 10);
cmd[0] = WRITE_6;
cmd[1] = 1;
blks = transfer / scsi_tapes[dev].block_size;
cmd[2] = blks >> 16;
cmd[3] = blks >> 8;
cmd[4] = blks;
SCpnt->request.dev = dev;
scsi_do_cmd (SCpnt,
(void *) cmd, scsi_tapes[dev].buffer->b_data, transfer,
st_sleep_done, ST_TIMEOUT, MAX_RETRIES);
if (SCpnt->request.dev == dev) sleep_on( &scsi_tapes[dev].waiting );
if (SCpnt->result != 0) {
printk("st%d: Error on flush:\n", dev);
#ifdef DEBUG
st_chk_result(dev, SCpnt->result, SCpnt->sense_buffer);
#endif
result = (-EIO);
}
else {
scsi_tapes[dev].dirty = 0;
scsi_tapes[dev].buffer->buffer_bytes = 0;
}
SCpnt->request.dev = -1; /* Mark as not busy */
}
static int ioctl_internal_command(Scsi_Device *dev, char * cmd,
int timeout, int retries)
{
int result;
Scsi_Cmnd * SCpnt;
SCpnt = allocate_device(NULL, dev, 1);
{
struct semaphore sem = MUTEX_LOCKED;
SCpnt->request.sem = &sem;
scsi_do_cmd(SCpnt, cmd, NULL, 0, scsi_ioctl_done, timeout, retries);
down(&sem);
}
if(driver_byte(SCpnt->result) != 0)
switch(SCpnt->sense_buffer[2] & 0xf) {
case ILLEGAL_REQUEST:
if(cmd[0] == ALLOW_MEDIUM_REMOVAL) dev->lockable = 0;
else printk("SCSI device (ioctl) reports ILLEGAL REQUEST.\n");
break;
case NOT_READY: /* This happens if there is no disc in drive */
if(dev->removable){
printk(KERN_INFO "Device not ready. Make sure there is a disc in the drive.\n");
break;
};
case UNIT_ATTENTION:
if (dev->removable){
dev->changed = 1;
SCpnt->result = 0; /* This is no longer considered an error */
printk(KERN_INFO "Disc change detected.\n");
break;
};
default: /* Fall through for non-removable media */
printk("SCSI error: host %d id %d lun %d return code = %x\n",
dev->host->host_no,
dev->id,
dev->lun,
SCpnt->result);
printk("\tSense class %x, sense error %x, extended sense %x\n",
sense_class(SCpnt->sense_buffer[0]),
sense_error(SCpnt->sense_buffer[0]),
SCpnt->sense_buffer[2] & 0xf);
};
result = SCpnt->result;
SCpnt->request.rq_status = RQ_INACTIVE;
if (!SCpnt->device->was_reset && SCpnt->device->scsi_request_fn)
(*SCpnt->device->scsi_request_fn)();
wake_up(&SCpnt->device->device_wait);
return result;
}
static int ioctl_internal_command(Scsi_Device *dev, char * cmd)
{
int host, result;
Scsi_Cmnd * SCpnt;
host = dev->host_no;
SCpnt = allocate_device(NULL, dev->index, 1);
scsi_do_cmd(SCpnt, cmd, NULL, 0,
scsi_ioctl_done, MAX_TIMEOUT,
MAX_RETRIES);
if (SCpnt->request.dev != 0xfffe){
SCpnt->request.waiting = current;
current->state = TASK_UNINTERRUPTIBLE;
while (SCpnt->request.dev != 0xfffe) schedule();
};
if(driver_byte(SCpnt->result) != 0)
switch(SCpnt->sense_buffer[2] & 0xf) {
case ILLEGAL_REQUEST:
if(cmd[0] == ALLOW_MEDIUM_REMOVAL) dev->lockable = 0;
else printk("SCSI device (ioctl) reports ILLEGAL REQUEST.\n");
break;
case NOT_READY: /* This happens if there is no disc in drive */
if(dev->removable){
printk("Device not ready. Make sure there is a disc in the drive.\n");
break;
};
case UNIT_ATTENTION:
if (dev->removable){
dev->changed = 1;
SCpnt->result = 0; /* This is no longer considered an error */
printk("Disc change detected.\n");
break;
};
default: /* Fall through for non-removable media */
printk("SCSI CD error: host %d id %d lun %d return code = %x\n",
dev->host_no,
dev->id,
dev->lun,
SCpnt->result);
printk("\tSense class %x, sense error %x, extended sense %x\n",
sense_class(SCpnt->sense_buffer[0]),
sense_error(SCpnt->sense_buffer[0]),
SCpnt->sense_buffer[2] & 0xf);
};
result = SCpnt->result;
SCpnt->request.dev = -1; /* Mark as not busy */
wake_up(&scsi_devices[SCpnt->index].device_wait);
return result;
}
static int do_ioctl( void )
{
int retries = IOCTL_RETRIES;
retry:
the_result = -1;
scsi_do_cmd(scsi_CDs[target].device->host_no, scsi_CDs[target].device->id,
(void *) sr_cmd, (void *) data_buffer, 255, sr_ioctl_done,
IOCTL_TIMEOUT, (void *) sense_buffer, 0);
while (the_result < 0) sleep_on(&sr_cmd_wait);
if(driver_byte(the_result) != 0 &&
(sense_buffer[2] & 0xf) == UNIT_ATTENTION) {
scsi_CDs[target].changed = 1;
printk("Disc change detected.\n");
};
if (the_result && retries)
{
retries--;
goto retry;
}
/* Minimal error checking. Ignore cases we know about, and report the rest. */
if(driver_byte(the_result) != 0)
switch(sense_buffer[2] & 0xf) {
case UNIT_ATTENTION:
scsi_CDs[target].changed = 1;
printk("Disc change detected.\n");
break;
case NOT_READY: /* This happens if there is no disc in drive */
printk("CDROM not ready. Make sure there is a disc in the drive.\n");
break;
case ILLEGAL_REQUEST:
printk("CDROM (ioctl) reports ILLEGAL REQUEST.\n");
break;
default:
printk("SCSI CD error: host %d id %d lun %d return code = %03x\n",
scsi_CDs[target].device->host_no,
scsi_CDs[target].device->id,
scsi_CDs[target].device->lun,
the_result);
printk("\tSense class %x, sense error %x, extended sense %x\n",
sense_class(sense_buffer[0]),
sense_error(sense_buffer[0]),
sense_buffer[2] & 0xf);
};
return the_result;
}
static int do_ioctl(int target, unsigned char * sr_cmd, void * buffer, unsigned buflength)
{
Scsi_Cmnd * SCpnt;
int result;
SCpnt = allocate_device(NULL, scsi_CDs[target].device->index, 1);
scsi_do_cmd(SCpnt,
(void *) sr_cmd, buffer, buflength, sr_ioctl_done,
IOCTL_TIMEOUT, IOCTL_RETRIES);
if (SCpnt->request.dev != 0xfffe) {
SCpnt->request.waiting = current;
current->state = TASK_UNINTERRUPTIBLE;
while (SCpnt->request.dev != 0xfffe) schedule();
};
result = SCpnt->result;
/* Minimal error checking. Ignore cases we know about, and report the rest. */
if(driver_byte(result) != 0)
switch(SCpnt->sense_buffer[2] & 0xf) {
case UNIT_ATTENTION:
scsi_CDs[target].device->changed = 1;
printk("Disc change detected.\n");
break;
case NOT_READY: /* This happens if there is no disc in drive */
printk("CDROM not ready. Make sure there is a disc in the drive.\n");
break;
case ILLEGAL_REQUEST:
printk("CDROM (ioctl) reports ILLEGAL REQUEST.\n");
break;
default:
printk("SCSI CD error: host %d id %d lun %d return code = %03x\n",
scsi_CDs[target].device->host_no,
scsi_CDs[target].device->id,
scsi_CDs[target].device->lun,
result);
printk("\tSense class %x, sense error %x, extended sense %x\n",
sense_class(SCpnt->sense_buffer[0]),
sense_error(SCpnt->sense_buffer[0]),
SCpnt->sense_buffer[2] & 0xf);
};
result = SCpnt->result;
SCpnt->request.dev = -1; /* Deallocate */
wake_up(&scsi_devices[SCpnt->index].device_wait);
/* Wake up a process waiting for device*/
return result;
}
static int scsi_wait_cmd_complete(struct scsi_dev *dev, struct scsi_cmd *cmd) {
/* guards to send only one command */
if (!dev->in_cmd) {
dev->in_cmd = 1;
dev->cmd_complete = scsi_do_cmd(dev, cmd);
}
if (dev->cmd_complete) {
dev->in_cmd = 0;
return dev->cmd_complete;
}
return 0;
}
static int gdth_set_asc_info(char *buffer,int length,int hanum,Scsi_Cmnd scp)
{
int orig_length, drive, wb_mode;
char cmnd[12];
int i, j, found;
gdth_ha_str *ha;
gdth_cmd_str gdtcmd;
gdth_cpar_str *pcpar;
TRACE2(("gdth_set_asc_info() ha %d\n",hanum));
ha = HADATA(gdth_ctr_tab[hanum]);
memset(cmnd, 0,10);
orig_length = length + 5;
drive = -1;
wb_mode = 0;
found = FALSE;
if (length >= 5 && strncmp(buffer,"flush",5)==0) {
buffer += 6;
length -= 6;
if (length && *buffer>='0' && *buffer<='9') {
drive = (int)(*buffer-'0');
++buffer;
--length;
if (length && *buffer>='0' && *buffer<='9') {
drive = drive*10 + (int)(*buffer-'0');
++buffer;
--length;
}
printk("GDT: Flushing host drive %d .. ",drive);
} else {
printk("GDT: Flushing all host drives .. ");
}
for (i = 0; i < MAXBUS; ++i) {
for (j = 0; j < MAXID; ++j) {
if (ha->id[i][j].type == CACHE_DTYP) {
if (drive != -1 &&
ha->id[i][j].hostdrive != (ushort)drive)
continue;
found = TRUE;
gdtcmd.BoardNode = LOCALBOARD;
gdtcmd.Service = CACHESERVICE;
gdtcmd.OpCode = GDT_FLUSH;
gdtcmd.u.cache.DeviceNo = ha->id[i][j].hostdrive;
gdtcmd.u.cache.BlockNo = 1;
gdtcmd.u.cache.sg_canz = 0;
{
struct semaphore sem = MUTEX_LOCKED;
scp.request.rq_status = RQ_SCSI_BUSY;
scp.request.sem = &sem;
scsi_do_cmd(&scp, cmnd, &gdtcmd,
sizeof(gdth_cmd_str), gdth_scsi_done,
30*HZ, 1);
down(&sem);
}
}
}
}
if (!found)
printk("\nNo host drive found !\n");
else
printk("Done.\n");
return(orig_length);
}
if (length >= 7 && strncmp(buffer,"wbp_off",7)==0) {
buffer += 8;
length -= 8;
printk("GDT: Disabling write back permanently .. ");
wb_mode = 1;
} else if (length >= 6 && strncmp(buffer,"wbp_on",6)==0) {
buffer += 7;
length -= 7;
printk("GDT: Enabling write back permanently .. ");
wb_mode = 2;
} else if (length >= 6 && strncmp(buffer,"wb_off",6)==0) {
buffer += 7;
length -= 7;
printk("GDT: Disabling write back commands .. ");
if (ha->cache_feat & GDT_WR_THROUGH) {
gdth_write_through = TRUE;
printk("Done.\n");
} else {
printk("Not supported !\n");
}
return(orig_length);
} else if (length >= 5 && strncmp(buffer,"wb_on",5)==0) {
buffer += 6;
length -= 6;
printk("GDT: Enabling write back commands .. ");
gdth_write_through = FALSE;
printk("Done.\n");
return(orig_length);
}
if (wb_mode) {
pcpar = (gdth_cpar_str *)kmalloc( sizeof(gdth_cpar_str),
GFP_ATOMIC | GFP_DMA );
if (pcpar == NULL) {
TRACE2(("gdth_set_info(): Unable to allocate memory.\n"));
printk("Unable to allocate memory.\n");
return(-EINVAL);
}
memcpy( pcpar, &ha->cpar, sizeof(gdth_cpar_str) );
gdtcmd.BoardNode = LOCALBOARD;
gdtcmd.Service = CACHESERVICE;
gdtcmd.OpCode = GDT_IOCTL;
gdtcmd.u.ioctl.p_param = (ulong)pcpar;
gdtcmd.u.ioctl.param_size = sizeof(gdth_cpar_str);
gdtcmd.u.ioctl.subfunc = CACHE_CONFIG;
gdtcmd.u.ioctl.channel = INVALID_CHANNEL;
pcpar->write_back = wb_mode==1 ? 0:1;
{
struct semaphore sem = MUTEX_LOCKED;
scp.request.rq_status = RQ_SCSI_BUSY;
scp.request.sem = &sem;
scsi_do_cmd(&scp, cmnd, &gdtcmd, sizeof(gdth_cmd_str),
gdth_scsi_done, 30*HZ, 1);
down(&sem);
}
kfree( pcpar );
printk("Done.\n");
return(orig_length);
}
printk("GDT: Unknown command: %s Length: %d\n",buffer,length);
return(-EINVAL);
}
static int gdth_set_bin_info(char *buffer,int length,int hanum,Scsi_Cmnd scp)
{
char cmnd[12];
int id;
unchar i, j, k, found;
gdth_ha_str *ha;
gdth_iowr_str *piowr;
gdth_iord_str *piord;
gdth_cmd_str *pcmd;
ulong *ppadd;
ulong add_size, flags;
TRACE2(("gdth_set_bin_info() ha %d\n",hanum));
ha = HADATA(gdth_ctr_tab[hanum]);
memset(cmnd, 0,10);
piowr = (gdth_iowr_str *)buffer;
piord = NULL;
pcmd = NULL;
if (length < GDTOFFSOF(gdth_iowr_str,iu))
return(-EINVAL);
switch (piowr->ioctl) {
case GDTIOCTL_GENERAL:
if (length < GDTOFFSOF(gdth_iowr_str,iu.general.data[0]))
return(-EINVAL);
pcmd = (gdth_cmd_str *)piowr->iu.general.command;
pcmd->Service = piowr->service;
if (pcmd->OpCode == GDT_IOCTL) {
ppadd = &pcmd->u.ioctl.p_param;
add_size = pcmd->u.ioctl.param_size;
} else if (piowr->service == CACHESERVICE) {
add_size = pcmd->u.cache.BlockCnt * SECTOR_SIZE;
if (ha->cache_feat & SCATTER_GATHER) {
ppadd = &pcmd->u.cache.sg_lst[0].sg_ptr;
pcmd->u.cache.DestAddr = -1UL;
pcmd->u.cache.sg_lst[0].sg_len = add_size;
pcmd->u.cache.sg_canz = 1;
} else {
ppadd = &pcmd->u.cache.DestAddr;
pcmd->u.cache.sg_canz = 0;
}
} else if (piowr->service == SCSIRAWSERVICE) {
add_size = pcmd->u.raw.sdlen;
if (ha->raw_feat & SCATTER_GATHER) {
ppadd = &pcmd->u.raw.sg_lst[0].sg_ptr;
pcmd->u.raw.sdata = -1UL;
pcmd->u.raw.sg_lst[0].sg_len = add_size;
pcmd->u.raw.sg_ranz = 1;
} else {
ppadd = &pcmd->u.raw.sdata;
pcmd->u.raw.sg_ranz = 0;
}
} else {
return(-EINVAL);
}
id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) + add_size );
if (id == -1)
return(-EBUSY);
piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
piord->size = sizeof(gdth_iord_str) + add_size;
if (add_size > 0) {
memcpy(piord->iu.general.data, piowr->iu.general.data, add_size);
*ppadd = (ulong)piord->iu.general.data;
}
/* do IOCTL */
{
struct semaphore sem = MUTEX_LOCKED;
scp.request.rq_status = RQ_SCSI_BUSY;
scp.request.sem = &sem;
scp.SCp.this_residual = IOCTL_PRI;
scsi_do_cmd(&scp, cmnd, pcmd,
sizeof(gdth_cmd_str), gdth_scsi_done,
piowr->timeout*HZ, 1);
down(&sem);
piord->status = (ulong)scp.SCp.Message;
}
break;
case GDTIOCTL_DRVERS:
id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );
if (id == -1)
return(-EBUSY);
piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
piord->size = sizeof(gdth_iord_str);
piord->status = S_OK;
piord->iu.drvers.version = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
break;
case GDTIOCTL_CTRTYPE:
id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );
if (id == -1)
return(-EBUSY);
piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
piord->size = sizeof(gdth_iord_str);
piord->status = S_OK;
if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
piord->iu.ctrtype.type = (unchar)((ha->stype>>20) - 10);
} else if (ha->type != GDT_PCIMPR) {
static ssize_t sg_write(struct file *filp, const char *buf,
size_t count, loff_t *ppos)
{
unsigned long flags;
struct inode *inode = filp->f_dentry->d_inode;
int bsize,size,amt,i;
unsigned char cmnd[MAX_COMMAND_SIZE];
kdev_t devt = inode->i_rdev;
int dev = MINOR(devt);
struct scsi_generic * device=&scsi_generics[dev];
int input_size;
unsigned char opcode;
Scsi_Cmnd * SCpnt;
/*
* If we are in the middle of error recovery, don't let anyone
* else try and use this device. Also, if error recovery fails, it
* may try and take the device offline, in which case all further
* access to the device is prohibited.
*/
if( !scsi_block_when_processing_errors(scsi_generics[dev].device) )
{
return -ENXIO;
}
if (ppos != &filp->f_pos) {
/* FIXME: Hmm. Seek to the right place, or fail? */
}
if ((i=verify_area(VERIFY_READ,buf,count)))
return i;
/*
* The minimum scsi command length is 6 bytes. If we get anything
* less than this, it is clearly bogus.
*/
if (count<(sizeof(struct sg_header) + 6))
return -EIO;
/*
* If we still have a result pending from a previous command,
* wait until the result has been read by the user before sending
* another command.
*/
while(device->pending)
{
if (filp->f_flags & O_NONBLOCK)
return -EAGAIN;
#ifdef DEBUG
printk("sg_write: sleeping on pending request\n");
#endif
interruptible_sleep_on(&device->write_wait);
if (signal_pending(current))
return -ERESTARTSYS;
}
/*
* Mark the device flags for the new state.
*/
device->pending=1;
device->complete=0;
copy_from_user(&device->header,buf,sizeof(struct sg_header));
device->header.pack_len=count;
buf+=sizeof(struct sg_header);
/*
* Now we need to grab the command itself from the user's buffer.
*/
get_user(opcode, buf);
size=COMMAND_SIZE(opcode);
if (opcode >= 0xc0 && device->header.twelve_byte) size = 12;
/*
* Determine buffer size.
*/
input_size = device->header.pack_len - size;
if( input_size > device->header.reply_len)
{
bsize = input_size;
} else {
bsize = device->header.reply_len;
}
/*
* Don't include the command header itself in the size.
*/
bsize-=sizeof(struct sg_header);
input_size-=sizeof(struct sg_header);
/*
* Verify that the user has actually passed enough bytes for this command.
*/
if( input_size < 0 )
{
device->pending=0;
wake_up( &device->write_wait );
return -EIO;
}
/*
* Allocate a buffer that is large enough to hold the data
* that has been requested. Round up to an even number of sectors,
* since scsi_malloc allocates in chunks of 512 bytes.
*/
amt=bsize;
if (!bsize)
bsize++;
bsize=(bsize+511) & ~511;
/*
* If we cannot allocate the buffer, report an error.
*/
if ((bsize<0) || !(device->buff=sg_malloc(device->buff_len=bsize)))
{
device->pending=0;
wake_up(&device->write_wait);
return -ENOMEM;
}
#ifdef DEBUG
printk("allocating device\n");
#endif
/*
* Grab a device pointer for the device we want to talk to. If we
* don't want to block, just return with the appropriate message.
*/
if (!(SCpnt=scsi_allocate_device(NULL,device->device, !(filp->f_flags & O_NONBLOCK))))
{
device->pending=0;
wake_up(&device->write_wait);
sg_free(device->buff,device->buff_len);
device->buff = NULL;
return -EAGAIN;
}
#ifdef DEBUG
printk("device allocated\n");
#endif
SCpnt->request.rq_dev = devt;
SCpnt->request.rq_status = RQ_ACTIVE;
SCpnt->sense_buffer[0]=0;
SCpnt->cmd_len = size;
/*
* Now copy the SCSI command from the user's address space.
*/
copy_from_user(cmnd,buf,size);
buf+=size;
/*
* If we are writing data, copy the data we are writing. The pack_len
* field also includes the length of the header and the command,
* so we need to subtract these off.
*/
if (input_size > 0) copy_from_user(device->buff, buf, input_size);
/*
* Set the LUN field in the command structure.
*/
cmnd[1]= (cmnd[1] & 0x1f) | (device->device->lun<<5);
#ifdef DEBUG
printk("do cmd\n");
#endif
/*
* Now pass the actual command down to the low-level driver. We
* do not do any more here - when the interrupt arrives, we will
* then do the post-processing.
*/
spin_lock_irqsave(&io_request_lock, flags);
scsi_do_cmd (SCpnt,(void *) cmnd,
(void *) device->buff,amt,
sg_command_done,device->timeout,SG_DEFAULT_RETRIES);
spin_unlock_irqrestore(&io_request_lock, flags);
#ifdef DEBUG
printk("done cmd\n");
#endif
return count;
}
static int ioctl_command(Scsi_Device *dev, void *buffer)
{
char * buf;
char cmd[12];
char * cmd_in;
Scsi_Cmnd * SCpnt;
unsigned char opcode;
int inlen, outlen, cmdlen;
int needed;
int result;
if (!buffer)
return -EINVAL;
inlen = get_fs_long((unsigned long *) buffer);
outlen = get_fs_long( ((unsigned long *) buffer) + 1);
cmd_in = (char *) ( ((int *)buffer) + 2);
opcode = get_fs_byte(cmd_in);
needed = (inlen > outlen ? inlen : outlen);
if(needed){
needed = (needed + 511) & ~511;
if (needed > MAX_BUF) needed = MAX_BUF;
buf = (char *) scsi_malloc(needed);
if (!buf) return -ENOMEM;
} else
buf = NULL;
memcpy_fromfs ((void *) cmd, cmd_in, cmdlen = COMMAND_SIZE (opcode));
memcpy_fromfs ((void *) buf, (void *) (cmd_in + cmdlen), inlen > MAX_BUF ? MAX_BUF : inlen);
cmd[1] = ( cmd[1] & 0x1f ) | (dev->lun << 5);
#ifndef DEBUG_NO_CMD
SCpnt = allocate_device(NULL, dev->index, 1);
scsi_do_cmd(SCpnt, cmd, buf, needed, scsi_ioctl_done, MAX_TIMEOUT,
MAX_RETRIES);
if (SCpnt->request.dev != 0xfffe){
SCpnt->request.waiting = current;
current->state = TASK_UNINTERRUPTIBLE;
while (SCpnt->request.dev != 0xfffe) schedule();
};
/* If there was an error condition, pass the info back to the user. */
if(SCpnt->result) {
result = verify_area(VERIFY_WRITE, cmd_in, sizeof(SCpnt->sense_buffer));
if (result)
return result;
memcpy_tofs((void *) cmd_in, SCpnt->sense_buffer, sizeof(SCpnt->sense_buffer));
} else {
result = verify_area(VERIFY_WRITE, cmd_in, (outlen > MAX_BUF) ? MAX_BUF : outlen);
if (result)
return result;
memcpy_tofs ((void *) cmd_in, buf, (outlen > MAX_BUF) ? MAX_BUF : outlen);
};
result = SCpnt->result;
SCpnt->request.dev = -1; /* Mark as not busy */
if (buf) scsi_free(buf, needed);
wake_up(&scsi_devices[SCpnt->index].device_wait);
return result;
#else
{
int i;
printk("scsi_ioctl : device %d. command = ", dev->id);
for (i = 0; i < 12; ++i)
printk("%02x ", cmd[i]);
printk("\nbuffer =");
for (i = 0; i < 20; ++i)
printk("%02x ", buf[i]);
printk("\n");
printk("inlen = %d, outlen = %d, cmdlen = %d\n",
inlen, outlen, cmdlen);
printk("buffer = %d, cmd_in = %d\n", buffer, cmd_in);
}
return 0;
#endif
}
/*
* This interface is depreciated - users should use the scsi generics
* interface instead, as this is a more flexible approach to performing
* generic SCSI commands on a device.
*/
int scsi_ioctl_send_command(Scsi_Device *dev, Scsi_Ioctl_Command *sic)
{
unsigned long flags;
char * buf;
unsigned char cmd[12];
char * cmd_in;
Scsi_Cmnd * SCpnt;
Scsi_Device * SDpnt;
unsigned char opcode;
int inlen, outlen, cmdlen;
int needed, buf_needed;
int timeout, retries, result;
if (!sic)
return -EINVAL;
/*
* Verify that we can read at least this much.
*/
result = verify_area(VERIFY_READ, sic, sizeof (Scsi_Ioctl_Command));
if (result) return result;
/*
* The structure that we are passed should look like:
*
* struct sdata {
* unsigned int inlen;
* unsigned int outlen;
* unsigned char cmd[]; # However many bytes are used for cmd.
* unsigned char data[];
* };
*/
get_user(inlen, &sic->inlen);
get_user(outlen, &sic->outlen);
/*
* We do not transfer more than MAX_BUF with this interface.
* If the user needs to transfer more data than this, they
* should use scsi_generics instead.
*/
if( inlen > MAX_BUF ) return -EINVAL;
if( outlen > MAX_BUF ) return -EINVAL;
cmd_in = sic->data;
get_user(opcode, cmd_in);
needed = buf_needed = (inlen > outlen ? inlen : outlen);
if(buf_needed){
buf_needed = (buf_needed + 511) & ~511;
if (buf_needed > MAX_BUF) buf_needed = MAX_BUF;
spin_lock_irqsave(&io_request_lock, flags);
buf = (char *) scsi_malloc(buf_needed);
spin_unlock_irqrestore(&io_request_lock, flags);
if (!buf) return -ENOMEM;
memset(buf, 0, buf_needed);
} else
buf = NULL;
/*
* Obtain the command from the user's address space.
*/
cmdlen = COMMAND_SIZE(opcode);
result = verify_area(VERIFY_READ, cmd_in,
cmdlen + inlen > MAX_BUF ? MAX_BUF : cmdlen + inlen);
if (result) return result;
copy_from_user ((void *) cmd, cmd_in, cmdlen);
/*
* Obtain the data to be sent to the device (if any).
*/
copy_from_user ((void *) buf,
(void *) (cmd_in + cmdlen),
inlen);
/*
* Set the lun field to the correct value.
*/
cmd[1] = ( cmd[1] & 0x1f ) | (dev->lun << 5);
switch (opcode)
{
case FORMAT_UNIT:
timeout = FORMAT_UNIT_TIMEOUT;
retries = 1;
break;
case START_STOP:
timeout = START_STOP_TIMEOUT;
retries = NORMAL_RETRIES;
break;
case MOVE_MEDIUM:
timeout = MOVE_MEDIUM_TIMEOUT;
retries = NORMAL_RETRIES;
break;
case READ_ELEMENT_STATUS:
timeout = READ_ELEMENT_STATUS_TIMEOUT;
retries = NORMAL_RETRIES;
break;
default:
timeout = NORMAL_TIMEOUT;
retries = NORMAL_RETRIES;
break;
}
#ifndef DEBUG_NO_CMD
spin_lock_irqsave(&io_request_lock, flags);
SCpnt = scsi_allocate_device(NULL, dev, 1);
{
struct semaphore sem = MUTEX_LOCKED;
SCpnt->request.sem = &sem;
scsi_do_cmd(SCpnt, cmd, buf, needed, scsi_ioctl_done,
timeout, retries);
spin_unlock_irqrestore(&io_request_lock, flags);
down(&sem);
SCpnt->request.sem = NULL;
}
/*
* If there was an error condition, pass the info back to the user.
*/
if(SCpnt->result) {
result = verify_area(VERIFY_WRITE,
cmd_in,
sizeof(SCpnt->sense_buffer));
if (result) return result;
copy_to_user((void *) cmd_in,
SCpnt->sense_buffer,
sizeof(SCpnt->sense_buffer));
} else {
result = verify_area(VERIFY_WRITE, cmd_in, outlen);
if (result) return result;
copy_to_user ((void *) cmd_in, buf, outlen);
}
result = SCpnt->result;
spin_lock_irqsave(&io_request_lock, flags);
wake_up(&SCpnt->device->device_wait);
SDpnt = SCpnt->device;
scsi_release_command(SCpnt);
SCpnt = NULL;
if (buf) scsi_free(buf, buf_needed);
if(SDpnt->scsi_request_fn)
(*SDpnt->scsi_request_fn)();
spin_unlock_irqrestore(&io_request_lock, flags);
return result;
#else
{
int i;
printk("scsi_ioctl : device %d. command = ", dev->id);
for (i = 0; i < 12; ++i)
printk("%02x ", cmd[i]);
printk("\nbuffer =");
for (i = 0; i < 20; ++i)
printk("%02x ", buf[i]);
printk("\n");
printk("inlen = %d, outlen = %d, cmdlen = %d\n",
inlen, outlen, cmdlen);
printk("buffer = %d, cmd_in = %d\n", buffer, cmd_in);
}
return 0;
#endif
}
static int ioctl_internal_command(Scsi_Device *dev, char * cmd,
int timeout, int retries)
{
unsigned long flags;
int result;
Scsi_Cmnd * SCpnt;
Scsi_Device * SDpnt;
spin_lock_irqsave(&io_request_lock, flags);
SCSI_LOG_IOCTL(1, printk("Trying ioctl with scsi command %d\n", cmd[0]));
SCpnt = scsi_allocate_device(NULL, dev, 1);
{
struct semaphore sem = MUTEX_LOCKED;
SCpnt->request.sem = &sem;
scsi_do_cmd(SCpnt, cmd, NULL, 0, scsi_ioctl_done, timeout, retries);
spin_unlock_irqrestore(&io_request_lock, flags);
down(&sem);
spin_lock_irqsave(&io_request_lock, flags);
SCpnt->request.sem = NULL;
}
SCSI_LOG_IOCTL(2, printk("Ioctl returned 0x%x\n", SCpnt->result));
if(driver_byte(SCpnt->result) != 0)
switch(SCpnt->sense_buffer[2] & 0xf) {
case ILLEGAL_REQUEST:
if(cmd[0] == ALLOW_MEDIUM_REMOVAL) dev->lockable = 0;
else printk("SCSI device (ioctl) reports ILLEGAL REQUEST.\n");
break;
case NOT_READY: /* This happens if there is no disc in drive */
if(dev->removable && (cmd[0] != TEST_UNIT_READY)){
printk(KERN_INFO "Device not ready. Make sure there is a disc in the drive.\n");
break;
}
case UNIT_ATTENTION:
if (dev->removable){
dev->changed = 1;
SCpnt->result = 0; /* This is no longer considered an error */
/* gag this error, VFS will log it anyway /axboe */
/* printk(KERN_INFO "Disc change detected.\n"); */
break;
};
default: /* Fall through for non-removable media */
printk("SCSI error: host %d id %d lun %d return code = %x\n",
dev->host->host_no,
dev->id,
dev->lun,
SCpnt->result);
printk("\tSense class %x, sense error %x, extended sense %x\n",
sense_class(SCpnt->sense_buffer[0]),
sense_error(SCpnt->sense_buffer[0]),
SCpnt->sense_buffer[2] & 0xf);
};
result = SCpnt->result;
SCSI_LOG_IOCTL(2, printk("IOCTL Releasing command\n"));
SDpnt = SCpnt->device;
scsi_release_command(SCpnt);
SCpnt = NULL;
if (!SDpnt->was_reset && SDpnt->scsi_request_fn)
(*SDpnt->scsi_request_fn)();
wake_up(&SDpnt->device_wait);
spin_unlock_irqrestore(&io_request_lock, flags);
return result;
}
