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Commit f51608c8 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by James Bottomley
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[PATCH] some tmscsim consolidation 

On Sun, Jun 06, 2004 at 02:41:56PM +0200, Christoph Hellwig wrote:
> I've looked through my old tmscsim patch queue and found this one:
>
>  - merge dc390_initDCB into dc390_slave_alloc
>  - merge DC390_release and dc390_shutdown into dc390_remove_one,
>    use del_timer_sync to make sure the timer is really deleted on
>    removal, adjust locking accordingly
>  - some tiny related cleanups

Okay, here's a resend vs current scsi-misc-2.6 that has your three
outstanding merged.  Additionally I've also killed dc390_freeDCBs()
as all dcbs are removed in ->slave_destroy.
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 4d0c7ddc
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Showing with 95 additions and 197 deletions
drivers/scsi/scsiiom.c
View file @ f51608c8
......@@ -1283,46 +1283,6 @@ dc390_Reselect( PACB pACB )
DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
}
static void
dc390_remove_dev (PACB pACB, PDCB pDCB)
{
PDCB pPrevDCB = pACB->pLinkDCB;
if (pDCB->GoingSRBCnt > 1)
{
DCBDEBUG(printk (KERN_INFO "DC390: Driver won't free DCB (ID %i, LUN %i): 0x%08x because of SRBCnt %i\n",\
pDCB->TargetID, pDCB->TargetLUN, (int)pDCB, pDCB->GoingSRBCnt));
return;
}
pACB->DCBmap[pDCB->TargetID] &= ~(1 << pDCB->TargetLUN);
// The first one
if (pDCB == pACB->pLinkDCB)
{
// The last one
if (pACB->pLastDCB == pDCB) {
pDCB->pNextDCB = 0; pACB->pLastDCB = 0;
}
pACB->pLinkDCB = pDCB->pNextDCB;
}
else
{
while (pPrevDCB->pNextDCB != pDCB) pPrevDCB = pPrevDCB->pNextDCB;
pPrevDCB->pNextDCB = pDCB->pNextDCB;
if (pDCB == pACB->pLastDCB) pACB->pLastDCB = pPrevDCB;
}
DCBDEBUG(printk (KERN_INFO "DC390: Driver about to free DCB (ID %i, LUN %i): %p\n",\
pDCB->TargetID, pDCB->TargetLUN, pDCB));
if (pDCB == pACB->pActiveDCB) pACB->pActiveDCB = 0;
if (pDCB == pACB->pLinkDCB) pACB->pLinkDCB = pDCB->pNextDCB;
if (pDCB == pACB->pDCBRunRobin) pACB->pDCBRunRobin = pDCB->pNextDCB;
kfree (pDCB);
pACB->DCBCnt--;
}
static UCHAR __inline__
dc390_tagq_blacklist (char* name)
{
......
drivers/scsi/tmscsim.c
View file @ f51608c8
......@@ -326,11 +326,9 @@ static void dc390_ResetSCSIBus( PACB pACB );
static void __inline__ dc390_RequestSense( PACB pACB, PDCB pDCB, PSRB pSRB );
static void __inline__ dc390_InvalidCmd( PACB pACB );
static void __inline__ dc390_EnableMsgOut_Abort (PACB, PSRB);
static void dc390_remove_dev (PACB pACB, PDCB pDCB);
static irqreturn_t do_DC390_Interrupt( int, void *, struct pt_regs *);
static int dc390_initAdapter( PSH psh, ULONG io_port, UCHAR Irq, UCHAR index );
static void dc390_initDCB( PACB pACB, PDCB *ppDCB, UCHAR id, UCHAR lun);
static void dc390_updateDCB (PACB pACB, PDCB pDCB);
static int DC390_proc_info (struct Scsi_Host *shpnt, char *buffer, char **start,
......@@ -1522,95 +1520,6 @@ static int DC390_reset (Scsi_Cmnd *cmd)
#include "scsiiom.c"
/***********************************************************************
* Function : static void dc390_initDCB()
*
* Purpose : initialize the internal structures for a DCB (to be malloced)
*
* Inputs : SCSI id and lun
***********************************************************************/
static void dc390_initDCB( PACB pACB, PDCB *ppDCB, UCHAR id, UCHAR lun )
{
PEEprom prom;
UCHAR index;
PDCB pDCB, pDCB2 = 0;
pDCB = kmalloc (sizeof(DC390_DCB), GFP_ATOMIC);
DCBDEBUG(printk (KERN_INFO "DC390: alloc mem for DCB (ID %i, LUN %i): %p\n", \
id, lun, pDCB));
*ppDCB = pDCB;
if (!pDCB)
return;
if( pACB->DCBCnt == 0 )
{
pACB->pLinkDCB = pDCB;
pACB->pDCBRunRobin = pDCB;
}
else
{
pACB->pLastDCB->pNextDCB = pDCB;
}
pACB->DCBCnt++;
pDCB->pNextDCB = pACB->pLinkDCB;
pACB->pLastDCB = pDCB;
pDCB->pDCBACB = pACB;
pDCB->TargetID = id;
pDCB->TargetLUN = lun;
pDCB->pWaitingSRB = NULL;
pDCB->pGoingSRB = NULL;
pDCB->GoingSRBCnt = 0;
pDCB->WaitSRBCnt = 0;
pDCB->pActiveSRB = NULL;
pDCB->TagMask = 0;
pDCB->MaxCommand = 1;
index = pACB->AdapterIndex;
pDCB->DCBFlag = 0;
/* Is there a corresp. LUN==0 device ? */
if (lun != 0)
pDCB2 = dc390_findDCB (pACB, id, 0);
prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
/* Some values are for all LUNs: Copy them */
/* In a clean way: We would have an own structure for a SCSI-ID */
if (pDCB2)
{
pDCB->DevMode = pDCB2->DevMode;
pDCB->SyncMode = pDCB2->SyncMode;
pDCB->SyncPeriod = pDCB2->SyncPeriod;
pDCB->SyncOffset = pDCB2->SyncOffset;
pDCB->NegoPeriod = pDCB2->NegoPeriod;
pDCB->CtrlR3 = pDCB2->CtrlR3;
pDCB->CtrlR4 = pDCB2->CtrlR4;
pDCB->Inquiry7 = pDCB2->Inquiry7;
}
else
{
pDCB->DevMode = prom->EE_MODE1;
pDCB->SyncMode = 0;
pDCB->SyncPeriod = 0;
pDCB->SyncOffset = 0;
pDCB->NegoPeriod = (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
pDCB->CtrlR3 = FAST_CLK;
pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
if( dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
pDCB->Inquiry7 = 0;
}
pACB->DCBmap[id] |= (1 << lun);
dc390_updateDCB(pACB, pDCB);
}
/***********************************************************************
* Function : static void dc390_updateDCB()
*
......@@ -1839,15 +1748,64 @@ static void __devinit dc390_set_pci_cfg (PDEVDECL)
*/
static int dc390_slave_alloc(struct scsi_device *scsi_device)
{
PDCB pDCB;
PACB pACB = (PACB) scsi_device->host->hostdata;
dc390_initDCB(pACB, &pDCB, scsi_device->id, scsi_device->lun);
if (pDCB != NULL) {
scsi_device->hostdata = pDCB;
pACB->scan_devices = 1;
return 0;
PDCB pDCB, pDCB2 = 0;
uint id = scsi_device->id;
uint lun = scsi_device->lun;
pDCB = kmalloc(sizeof(DC390_DCB), GFP_KERNEL);
if (!pDCB)
return -ENOMEM;
memset(pDCB, 0, sizeof(DC390_DCB));
if (!pACB->DCBCnt++) {
pACB->pLinkDCB = pDCB;
pACB->pDCBRunRobin = pDCB;
} else {
pACB->pLastDCB->pNextDCB = pDCB;
}
return -ENOMEM;
pDCB->pNextDCB = pACB->pLinkDCB;
pACB->pLastDCB = pDCB;
pDCB->pDCBACB = pACB;
pDCB->TargetID = id;
pDCB->TargetLUN = lun;
pDCB->MaxCommand = 1;
/*
* Some values are for all LUNs: Copy them
* In a clean way: We would have an own structure for a SCSI-ID
*/
if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
pDCB->DevMode = pDCB2->DevMode;
pDCB->SyncMode = pDCB2->SyncMode;
pDCB->SyncPeriod = pDCB2->SyncPeriod;
pDCB->SyncOffset = pDCB2->SyncOffset;
pDCB->NegoPeriod = pDCB2->NegoPeriod;
pDCB->CtrlR3 = pDCB2->CtrlR3;
pDCB->CtrlR4 = pDCB2->CtrlR4;
pDCB->Inquiry7 = pDCB2->Inquiry7;
} else {
u8 index = pACB->AdapterIndex;
PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
pDCB->DevMode = prom->EE_MODE1;
pDCB->NegoPeriod =
(dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
pDCB->CtrlR3 = FAST_CLK;
pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
}
pACB->DCBmap[id] |= (1 << lun);
dc390_updateDCB(pACB, pDCB);
pACB->scan_devices = 1;
scsi_device->hostdata = pDCB;
return 0;
}
/**
......@@ -1860,11 +1818,37 @@ static void dc390_slave_destroy(struct scsi_device *scsi_device)
{
PACB pACB = (PACB) scsi_device->host->hostdata;
PDCB pDCB = (PDCB) scsi_device->hostdata;
PDCB pPrevDCB = pACB->pLinkDCB;
pACB->scan_devices = 0;
if (pDCB != NULL)
dc390_remove_dev(pACB, pDCB);
else
printk(KERN_ERR"%s() called for non-existing device!\n", __FUNCTION__);
BUG_ON(pDCB->GoingSRBCnt > 1);
pACB->DCBmap[pDCB->TargetID] &= ~(1 << pDCB->TargetLUN);
if (pDCB == pACB->pLinkDCB) {
if (pACB->pLastDCB == pDCB) {
pDCB->pNextDCB = NULL;
pACB->pLastDCB = NULL;
}
pACB->pLinkDCB = pDCB->pNextDCB;
} else {
while (pPrevDCB->pNextDCB != pDCB)
pPrevDCB = pPrevDCB->pNextDCB;
pPrevDCB->pNextDCB = pDCB->pNextDCB;
if (pDCB == pACB->pLastDCB)
pACB->pLastDCB = pPrevDCB;
}
if (pDCB == pACB->pActiveDCB)
pACB->pActiveDCB = NULL;
if (pDCB == pACB->pLinkDCB)
pACB->pLinkDCB = pDCB->pNextDCB;
if (pDCB == pACB->pDCBRunRobin)
pACB->pDCBRunRobin = pDCB->pNextDCB;
kfree(pDCB);
pACB->DCBCnt--;
}
static int dc390_slave_configure(struct scsi_device *scsi_device)
......@@ -1966,52 +1950,6 @@ static int __devinit dc390_init_one(struct pci_dev *dev,
return ret;
}
static void __devexit dc390_freeDCBs (struct Scsi_Host *host)
{
PDCB pDCB, nDCB;
PACB pACB = (PACB) host->hostdata;
pDCB = pACB->pLinkDCB;
if (!pDCB) return;
do
{
nDCB = pDCB->pNextDCB;
DCBDEBUG(printk (KERN_INFO "DC390: Free DCB (ID %i, LUN %i): %p\n",\
pDCB->TargetID, pDCB->TargetLUN, pDCB));
//kfree (pDCB);
dc390_remove_dev (pACB, pDCB);
pDCB = nDCB;
} while (pDCB && pACB->pLinkDCB);
}
/***********************************************************************
* Function : static int dc390_shutdown (struct Scsi_Host *host)
*
* Purpose : does a clean (we hope) shutdown of the SCSI chip.
* Use prior to dumping core, unloading the driver, etc.
*
* Returns : 0 on success
***********************************************************************/
static int __devexit dc390_shutdown (struct Scsi_Host *host)
{
UCHAR bval;
PACB pACB = (PACB) host->hostdata;
/* pACB->soft_reset(host); */
printk(KERN_INFO "DC390: shutdown\n");
pACB->ACBFlag = RESET_DEV;
bval = DC390_read8 (CtrlReg1);
bval |= DIS_INT_ON_SCSI_RST;
DC390_write8 (CtrlReg1, bval); /* disable interrupt */
if (pACB->Gmode2 & RST_SCSI_BUS)
dc390_ResetSCSIBus (pACB);
if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer);
return( 0 );
}
/**
* dc390_remove_one - Called to remove a single instance of the adapter.
*
......@@ -2022,22 +1960,22 @@ static void __devexit dc390_remove_one(struct pci_dev *dev)
struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
unsigned long iflags;
PACB pACB = (PACB) scsi_host->hostdata;
u8 bval;
scsi_remove_host(scsi_host);
spin_lock_irqsave(scsi_host->host_lock, iflags);
pACB->ACBFlag = RESET_DEV;
bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
DC390_write8 (CtrlReg1, bval); /* disable interrupt */
if (pACB->Gmode2 & RST_SCSI_BUS)
dc390_ResetSCSIBus(pACB);
spin_unlock_irqrestore(scsi_host->host_lock, iflags);
/* TO DO: We should check for outstanding commands first. */
dc390_shutdown(scsi_host);
if (scsi_host->irq != SCSI_IRQ_NONE) {
DEBUG0(printk(KERN_INFO "DC390: Free IRQ %i\n", scsi_host->irq));
free_irq(scsi_host->irq, pACB);
}
del_timer_sync(&pACB->Waiting_Timer);
free_irq(scsi_host->irq, pACB);
release_region(scsi_host->io_port, scsi_host->n_io_port);
dc390_freeDCBs(scsi_host);
spin_unlock_irqrestore(scsi_host->host_lock, iflags);
pci_disable_device(dev);
scsi_host_put(scsi_host);
......
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