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Commit d1fef10e authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by James Bottomley
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tmscsim: remove procfs write support from tmscsim 

From: Christoph Hellwig <hch@lst.de>

When looking at the driver after reviewing the changes I stubled over
that code.  Almost all of the funcitonality (except DUMP) should go
through the midlayer and will at least cause some confusion if it
doesn't.

Also the implementation isn't exactly nice, like kmalloced scsi commands
and the tytpical 'parsing' macros cut & pasted over all historic scsi
drivers.  I think we're better of removing it completly and maybe readd
dump as a sysfs attribute if needed.

500 lines of code gone.
parent 5dc8b542
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Inline Side-by-side
Showing with 1 addition and 500 deletions
drivers/scsi/tmscsim.c
View file @ d1fef10e
...@@ -1749,25 +1749,6 @@ void dc390_updateDCB (PACB pACB, PDCB pDCB) ...@@ -1749,25 +1749,6 @@ void dc390_updateDCB (PACB pACB, PDCB pDCB)
pDCB->CtrlR1 |= PARITY_ERR_REPO; pDCB->CtrlR1 |= PARITY_ERR_REPO;
} }
/***********************************************************************
* Function : static void dc390_updateDCBs ()
*
* Purpose : Set the configuration dependent DCB params for all DCBs
***********************************************************************/
static void dc390_updateDCBs (PACB pACB)
{
int i;
PDCB pDCB = pACB->pLinkDCB;
for (i = 0; i < pACB->DCBCnt; i++)
{
dc390_updateDCB (pACB, pDCB);
pDCB = pDCB->pNextDCB;
}
}
/*********************************************************************** /***********************************************************************
* Function : static void dc390_initSRB() * Function : static void dc390_initSRB()
* *
...@@ -2137,486 +2118,6 @@ int __init DC390_detect (Scsi_Host_Template *psht) ...@@ -2137,486 +2118,6 @@ int __init DC390_detect (Scsi_Host_Template *psht)
return( dc390_adapterCnt ); return( dc390_adapterCnt );
} }
/***********************************************************************
* Functions: dc390_inquiry(), dc390_inquiry_done()
*
* Purpose: When changing speed etc., we have to issue an INQUIRY
* command to make sure, we agree upon the nego parameters
* with the device
***********************************************************************/
static void dc390_inquiry_done (Scsi_Cmnd* cmd)
{
printk (KERN_INFO "DC390: INQUIRY (ID %02x LUN %02x) returned %08x\n",
cmd->device->id, cmd->device->lun, cmd->result);
if (cmd->result)
{
PACB pACB = (PACB)cmd->device->host->hostdata;
PDCB pDCB = dc390_findDCB (pACB, cmd->device->id, cmd->device->lun);
printk ("DC390: Unsetting DsCn, Sync and TagQ!\n");
if (pDCB)
{
pDCB->DevMode &= ~(SYNC_NEGO_ | TAG_QUEUEING_ | EN_DISCONNECT_ );
dc390_updateDCB (pACB, pDCB);
}
}
kfree (cmd);
}
void dc390_inquiry (PACB pACB, PDCB pDCB)
{
char* buffer;
Scsi_Cmnd* cmd;
cmd = kmalloc (sizeof(Scsi_Cmnd) + 256, GFP_ATOMIC);
if (!cmd) { printk ("DC390: kmalloc failed in inquiry!\n"); return; }
buffer = (char*)cmd + sizeof(Scsi_Cmnd);
memset (cmd, 0, sizeof(Scsi_Cmnd) + 256);
cmd->cmnd[0] = INQUIRY;
cmd->cmnd[1] = (pDCB->TargetLUN << 5) & 0xe0;
cmd->cmnd[4] = 0xff;
cmd->cmd_len = 6; cmd->old_cmd_len = 6;
/* TODO FIXME */
/* cmd->host = pACB->pScsiHost; */
cmd->device->id = pDCB->TargetID;
cmd->device->lun = pDCB->TargetLUN;
cmd->serial_number = 1;
cmd->pid = 390;
cmd->bufflen = 128;
cmd->buffer = buffer;
cmd->request_bufflen = 128;
cmd->request_buffer = &buffer[128];
cmd->done = dc390_inquiry_done;
cmd->scsi_done = dc390_inquiry_done;
cmd->timeout_per_command = HZ;
cmd->request->rq_status = RQ_SCSI_BUSY;
pDCB->SyncMode &= ~SYNC_NEGO_DONE;
printk (KERN_INFO "DC390: Queue INQUIRY command to dev ID %02x LUN %02x\n",
pDCB->TargetID, pDCB->TargetLUN);
DC390_queue_command (cmd, dc390_inquiry_done);
}
/***********************************************************************
* Functions: dc390_sendstart(), dc390_sendstart_done()
*
* Purpose: When changing speed etc., we have to issue an INQUIRY
* command to make sure, we agree upon the nego parameters
* with the device
***********************************************************************/
static void dc390_sendstart_done (Scsi_Cmnd* cmd)
{
printk (KERN_INFO "DC390: SENDSTART (ID %02x LUN %02x) returned %08x\n",
cmd->device->id, cmd->device->lun, cmd->result);
kfree (cmd);
}
void dc390_sendstart (PACB pACB, PDCB pDCB)
{
char* buffer;
Scsi_Cmnd* cmd;
cmd = kmalloc (sizeof(Scsi_Cmnd) + 256, GFP_ATOMIC);
if (!cmd) { printk ("DC390: kmalloc failed in sendstart!\n"); return; }
buffer = (char*)cmd + sizeof(Scsi_Cmnd);
memset (cmd, 0, sizeof(Scsi_Cmnd) + 256);
cmd->cmnd[0] = 0x1b; /* START_STOP_UNIT */
cmd->cmnd[1] = (pDCB->TargetLUN << 5) & 0xe0;
cmd->cmnd[4] = 0x01; /* START */
cmd->cmd_len = 6; cmd->old_cmd_len = 6;
/* TODO FIXME */
/* cmd->host = pACB->pScsiHost; */
cmd->device->id = pDCB->TargetID;
cmd->device->lun = pDCB->TargetLUN;
cmd->serial_number = 1;
cmd->pid = 310;
cmd->bufflen = 128;
cmd->buffer = buffer;
cmd->request_bufflen = 128;
cmd->request_buffer = &buffer[128];
cmd->done = dc390_sendstart_done;
cmd->scsi_done = dc390_sendstart_done;
cmd->timeout_per_command = 5*HZ;
cmd->request->rq_status = RQ_SCSI_BUSY;
pDCB->SyncMode &= ~SYNC_NEGO_DONE;
printk (KERN_INFO "DC390: Queue SEND_START command to dev ID %02x LUN %02x\n",
pDCB->TargetID, pDCB->TargetLUN);
DC390_queue_command (cmd, dc390_sendstart_done);
}
/********************************************************************
* Function: dc390_set_info()
*
* Purpose: Change adapter config
*
* Strings are parsed similar to the output of tmscsim_proc_info ()
* '-' means no change
*******************************************************************/
static int dc390_scanf (char** buffer, char** pos, char** p0, int* var)
{
*p0 = *pos;
*var = simple_strtoul (*p0, pos, 10);
if (*p0 == *pos) return -1;
*pos = strsep (buffer, " \t\n:=,;.");
return 0;
}
#define SCANF(buffer, pos, p0, var, min, max) \
if (dc390_scanf (&buffer, &pos, &p0, &var)) goto einv; \
else if (var<min || var>max) goto einv2
static int dc390_yesno (char** buffer, char** pos, char* var, char bmask)
{
switch (**pos)
{
case 'Y': *var |= bmask; break;
case 'N': *var &= ~bmask; break;
case '-': break;
default: return -1;
}
*pos = strsep (buffer, " \t\n:=,;");
return 0;
}
#define YESNO(buffer, pos, var, bmask) \
if (dc390_yesno (&buffer, &pos, &var, bmask)) goto einv; \
else dc390_updateDCB (pACB, pDCB); \
if (!pos) goto ok
static int dc390_search (char** buffer, char** pos, char** p0, char* var, char* txt, int max, int scale, char* ign)
{
int dum;
if (! memcmp (*pos, txt, strlen(txt)))
{
*p0 = strsep (buffer, " \t\n:=,;");
if (!*p0) return -1;
dum = simple_strtoul (*p0, pos, 10);
if (*p0 == *pos) return -1;
if (dum >= 0 && dum <= max)
{ *var = (dum * 100) / scale; }
else return -2;
*pos = strsep (buffer, " \t\n:=,;");
if (*ign && *pos && strlen(*pos) >= strlen(ign) &&
!(memcmp (*pos, ign, strlen(ign))))
*pos = strsep (buffer, " \t\n:=,;");
}
return 0;
}
#define SEARCH(buffer, pos, p0, var, txt, max) \
if (dc390_search (&buffer, &pos, &p0, (PUCHAR)(&var), txt, max, 100, "")) goto einv2; \
else if (!p1) goto ok2
#define SEARCH2(buffer, pos, p0, var, txt, max, scale) \
if (dc390_search (&buffer, &pos, &p0, &var, txt, max, scale, "")) goto einv2; \
else if (!p1) goto ok2
#define SEARCH3(buffer, pos, p0, var, txt, max, scale, ign) \
if (dc390_search (&buffer, &pos, &p0, &var, txt, max, scale, ign)) goto einv2; \
else if (!p1) goto ok2
#ifdef DC390_PARSEDEBUG
static char _prstr[256];
char* prstr (char* p, char* e)
{
char* c = _prstr;
while (p < e)
if (*p == 0) { *c++ = ':'; p++; }
else if (*p == 10) { *c++ = '\\'; *c++ = 'n'; p++; }
else *c++ = *p++;
*c = 0;
return _prstr;
}
#endif
int dc390_set_info (char *buffer, int length, PACB pACB)
{
char *pos = buffer, *p0 = buffer;
char needs_inquiry = 0;
int dum = 0;
char dev;
PDCB pDCB = pACB->pLinkDCB;
DC390_IFLAGS;
DC390_AFLAGS;
pos[length] = 0;
DC390_LOCK_IO(pACB->pScsiHost);
DC390_LOCK_ACB;
/* UPPERCASE */
/* Don't use kernel toupper, because of 2.0.x bug: ctmp unexported */
while (*pos)
{ if (*pos >='a' && *pos <= 'z') *pos = *pos + 'A' - 'a'; pos++; }
/* Remove WS */
pos = strsep (&buffer, " \t:\n=,;");
if (!*pos) goto ok;
next:
if (!memcmp (pos, "RESET", 5)) goto reset;
else if (!memcmp (pos, "INQUIRY", 7)) goto inquiry;
else if (!memcmp (pos, "REMOVE", 6)) goto remove;
else if (!memcmp (pos, "ADD", 3)) goto add;
else if (!memcmp (pos, "START", 5)) goto start;
else if (!memcmp (pos, "DUMP", 4)) goto dump;
if (isdigit (*pos))
{
/* Device config line */
int dev, id, lun; char* pdec;
char olddevmode;
SCANF (buffer, pos, p0, dev, 0, pACB->DCBCnt-1);
if (*pos) { SCANF (buffer, pos, p0, id, 0, 7); } else goto einv;
if (*pos) { SCANF (buffer, pos, p0, lun, 0, 7); } else goto einv;
if (!*pos) goto einv;
PARSEDEBUG(printk (KERN_INFO "DC390: config line %i %i %i:\"%s\"\n", dev, id, lun, prstr (pos, &buffer[length])));
pDCB = pACB->pLinkDCB;
for (dum = 0; dum < dev; dum++) pDCB = pDCB->pNextDCB;
/* Sanity Check */
if (pDCB->TargetID != id || pDCB->TargetLUN != lun)
{
printk (KERN_ERR "DC390: no such device: Idx=%02i ID=%02i LUN=%02i\n",
dev, id, lun);
goto einv2;
}
if (pDCB->pWaitingSRB || pDCB->pGoingSRB)
{
printk ("DC390: Cannot change dev (%i-%i) cfg: Pending requests\n",
pDCB->TargetID, pDCB->TargetLUN);
goto einv;
}
olddevmode = pDCB->DevMode;
YESNO (buffer, pos, pDCB->DevMode, PARITY_CHK_);
needs_inquiry++;
YESNO (buffer, pos, pDCB->DevMode, SYNC_NEGO_);
if ((olddevmode & SYNC_NEGO_) == (pDCB->DevMode & SYNC_NEGO_)) needs_inquiry--;
needs_inquiry++;
YESNO (buffer, pos, pDCB->DevMode, EN_DISCONNECT_);
if ((olddevmode & EN_DISCONNECT_) == (pDCB->DevMode & EN_DISCONNECT_)) needs_inquiry--;
YESNO (buffer, pos, pDCB->DevMode, SEND_START_);
needs_inquiry++;
YESNO (buffer, pos, pDCB->DevMode, TAG_QUEUEING_);
if ((olddevmode & TAG_QUEUEING_) == (pDCB->DevMode & TAG_QUEUEING_)) needs_inquiry--;
dc390_updateDCB (pACB, pDCB);
if (!*pos) goto ok;
olddevmode = pDCB->NegoPeriod;
/* Look for decimal point (Speed) */
pdec = pos;
while (pdec++ < &buffer[length]) if (*pdec == '.') break;
/* NegoPeriod */
if (*pos != '-')
{
SCANF (buffer, pos, p0, dum, 72, 800);
pDCB->NegoPeriod = dum >> 2;
if (pDCB->NegoPeriod != olddevmode) needs_inquiry++;
if (!pos) goto ok;
if (memcmp (pos, "NS", 2) == 0) pos = strsep (&pos, " \t\n:=,;.");
}
else pos = strsep (&pos, " \t\n:=,;.");
if (!*pos) goto ok;
/* Sync Speed in MHz */
if (*pos != '-')
{
SCANF (buffer, pos, p0, dum, 1, 13);
pDCB->NegoPeriod = (1000/dum) >> 2;
if (pDCB->NegoPeriod != olddevmode && !pos) needs_inquiry++;
if (!*pos) goto ok;
/* decimal */
if (pos-1 == pdec)
{
int dumold = dum;
dum = simple_strtoul (pos, &p0, 10) * 10;
for (; p0-pos > 1; p0--) dum /= 10;
pDCB->NegoPeriod = (100000/(100*dumold + dum)) >> 2;
if (pDCB->NegoPeriod < 19) pDCB->NegoPeriod = 19;
pos = strsep (&pos, " \t\n:=,;");
if (!*pos) goto ok;
}
if (*pos == 'M') pos = strsep (&pos, " \t\n:=,;");
if (pDCB->NegoPeriod != olddevmode) needs_inquiry++;
}
else pos = strsep (&pos, " \t\n:=,;");
/* dc390_updateDCB (pACB, pDCB); */
if (!*pos) goto ok;
olddevmode = pDCB->SyncOffset;
/* SyncOffs */
if (*pos != '-')
{
SCANF (buffer, pos, p0, dum, 0, 0x0f);
pDCB->SyncOffset = dum;
if (pDCB->SyncOffset > olddevmode) needs_inquiry++;
}
else pos = strsep (&pos, " \t\n:=,;");
if (!*pos) goto ok;
dc390_updateDCB (pACB, pDCB);
//olddevmode = pDCB->MaxCommand;
/* MaxCommand (Tags) */
if (*pos != '-')
{
SCANF (buffer, pos, p0, dum, 1, 32 /*pACB->TagMaxNum*/);
if (pDCB->SyncMode & EN_TAG_QUEUEING)
pDCB->MaxCommand = dum;
else printk (KERN_INFO "DC390: Can't set MaxCmd larger than one without Tag Queueing!\n");
}
else pos = strsep (&pos, " \t\n:=,;");
}
else
{
char* p1 = pos; UCHAR dum, newadaptid;
PARSEDEBUG(printk (KERN_INFO "DC390: chg adapt cfg \"%s\"\n", prstr (pos, &buffer[length])));
dum = GLITCH_TO_NS (pACB->glitch_cfg);
/* Adapter setting */
SEARCH (buffer, pos, p0, pACB->pScsiHost->max_id, "MAXID", 8);
SEARCH (buffer, pos, p0, pACB->pScsiHost->max_lun, "MAXLUN", 8);
SEARCH (buffer, pos, p0, newadaptid, "ADAPTERID", 7);
SEARCH (buffer, pos, p0, pACB->TagMaxNum, "TAGMAXNUM", 32);
SEARCH (buffer, pos, p0, pACB->ACBFlag, "ACBFLAG", 255);
SEARCH3 (buffer, pos, p0, dum, "GLITCHEATER", 40, 1000, "NS");
SEARCH3 (buffer, pos, p0, pACB->sel_timeout, "SELTIMEOUT", 400, 163, "MS");
SEARCH3 (buffer, pos, p0, dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY], "DELAYRESET", 180, 100, "S");
ok2:
pACB->glitch_cfg = NS_TO_GLITCH (dum);
if (pACB->sel_timeout < 60) pACB->sel_timeout = 60;
DC390_write8 (Scsi_TimeOut, pACB->sel_timeout);
if (newadaptid != pACB->pScsiHost->this_id)
{
pACB->pScsiHost->this_id = newadaptid;
dc390_ResetDevParam (pACB);
}
//dum = 0; while (1 << dum <= pACB->TagMaxNum) dum ++;
//pACB->TagMaxNum &= (1 << --dum);
dc390_updateDCBs (pACB);
// All devs should be INQUIRED now
if (pos == p1) goto einv;
}
if (*pos) goto next;
ok:
DC390_UNLOCK_ACB;
if (needs_inquiry)
{ dc390_updateDCB (pACB, pDCB); dc390_inquiry (pACB, pDCB); }
DC390_UNLOCK_IO(pACB->pScsiHost);
return (length);
einv2:
pos = p0;
einv:
DC390_UNLOCK_ACB;
DC390_UNLOCK_IO(pACB->pScsiHost);
printk (KERN_WARNING "DC390: parse error near \"%s\"\n", (pos? pos: "NULL"));
return (-EINVAL);
reset:
{
Scsi_Cmnd cmd;
/* TODO FIXME */
/* cmd.host = pACB->pScsiHost; */
printk (KERN_WARNING "DC390: Driver reset requested!\n");
DC390_UNLOCK_ACB;
DC390_reset (&cmd);
DC390_UNLOCK_IO(pACB->pScsiHost);
}
return (length);
dump:
{
dc390_dumpinfo (pACB, 0, 0);
DC390_UNLOCK_ACB;
DC390_UNLOCK_IO(pACB->pScsiHost);
}
return (length);
inquiry:
{
pos = strsep (&pos, " \t\n.:;="); if (!*pos) goto einv;
dev = simple_strtoul (pos, &p0, 10);
if (dev >= pACB->DCBCnt) goto einv_dev;
for (dum = 0; dum < dev; dum++) pDCB = pDCB->pNextDCB;
printk (KERN_NOTICE " DC390: Issue INQUIRY command to Dev(Idx) %i SCSI ID %i LUN %i\n",
dev, pDCB->TargetID, pDCB->TargetLUN);
DC390_UNLOCK_ACB;
dc390_inquiry (pACB, pDCB);
DC390_UNLOCK_IO(pACB->pScsiHost);
}
return (length);
remove:
{
pos = strsep (&pos, " \t\n.:;="); if (!*pos) goto einv;
dev = simple_strtoul (pos, &p0, 10);
if (dev >= pACB->DCBCnt) goto einv_dev;
for (dum = 0; dum < dev; dum++) pDCB = pDCB->pNextDCB;
printk (KERN_NOTICE " DC390: Remove DCB for Dev(Idx) %i SCSI ID %i LUN %i\n",
dev, pDCB->TargetID, pDCB->TargetLUN);
/* TO DO: We should make sure no pending commands are left */
dc390_remove_dev (pACB, pDCB);
DC390_UNLOCK_ACB;
DC390_UNLOCK_IO(pACB->pScsiHost);
}
return (length);
add:
{
int id, lun;
pos = strsep (&pos, " \t\n.:;=");
if (*pos) { SCANF (buffer, pos, p0, id, 0, 7); } else goto einv;
if (*pos) { SCANF (buffer, pos, p0, lun, 0, 7); } else goto einv;
pDCB = dc390_findDCB (pACB, id, lun);
if (pDCB) { printk ("DC390: ADD: Device already existing\n"); goto einv; }
dc390_initDCB (pACB, &pDCB, id, lun);
DC390_UNLOCK_ACB;
dc390_inquiry (pACB, pDCB);
DC390_UNLOCK_IO(pACB->pScsiHost);
}
return (length);
start:
{
int id, lun;
pos = strsep (&pos, " \t\n.:;=");
if (*pos) { SCANF (buffer, pos, p0, id, 0, 7); } else goto einv;
if (*pos) { SCANF (buffer, pos, p0, lun, 0, 7); } else goto einv;
pDCB = dc390_findDCB (pACB, id, lun);
if (pDCB) printk ("DC390: SendStart: Device already existing ...\n");
else dc390_initDCB (pACB, &pDCB, id, lun);
DC390_UNLOCK_ACB;
dc390_sendstart (pACB, pDCB);
dc390_inquiry (pACB, pDCB);
DC390_UNLOCK_IO(pACB->pScsiHost);
}
return (length);
einv_dev:
printk (KERN_WARNING "DC390: Ignore cmnd to invalid Dev(Idx) %i. Valid range: 0 - %i.\n",
dev, pACB->DCBCnt - 1);
DC390_UNLOCK_ACB;
DC390_UNLOCK_IO(pACB->pScsiHost);
return (-EINVAL);
}
#undef SEARCH
#undef YESNO
#undef SCANF
/******************************************************************** /********************************************************************
* Function: DC390_proc_info(char* buffer, char **start, * Function: DC390_proc_info(char* buffer, char **start,
* off_t offset, int length, int hostno, int inout) * off_t offset, int length, int hostno, int inout)
...@@ -2665,7 +2166,7 @@ int DC390_proc_info (struct Scsi_Host *shpnt, char *buffer, char **start, ...@@ -2665,7 +2166,7 @@ int DC390_proc_info (struct Scsi_Host *shpnt, char *buffer, char **start,
if (pACB == (PACB)-1) return(-ESRCH); if (pACB == (PACB)-1) return(-ESRCH);
if(inout) /* Has data been written to the file ? */ if(inout) /* Has data been written to the file ? */
return dc390_set_info(buffer, length, pACB); return -ENOSYS;
SPRINTF("Tekram DC390/AM53C974 PCI SCSI Host Adapter, "); SPRINTF("Tekram DC390/AM53C974 PCI SCSI Host Adapter, ");
SPRINTF("Driver Version %s\n", DC390_VERSION); SPRINTF("Driver Version %s\n", DC390_VERSION);
......
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