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[SCSI] allow sleeping in ->eh_bus_reset_handler()

Browse Source 
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Jeff Garzik 2005-05-28 07:56:31 -04:00
parent 94d0e7b805
commit 68b3aa7c98
32 changed files with 134 additions and 41 deletions
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3
Documentation/scsi/scsi_mid_low_api.txt
View File

@ -954,8 +954,7 @@ Details:
*
* Returns SUCCESS if command aborted else FAILED
*
* Locks: struct Scsi_Host::host_lock held (with irqsave) on entry
* and assumed to be held on return.
* Locks: None held
*
* Calling context: kernel thread
*

3
drivers/fc4/fc.c
View File

@ -983,7 +983,10 @@ int fcp_scsi_dev_reset(Scsi_Cmnd *SCpnt)
fc->rst_pkt->request->rq_status = RQ_SCSI_BUSY;
fc->rst_pkt->done = fcp_scsi_reset_done;
spin_lock_irqsave(SCpnt->device->host->host_lock, flags);
fcp_scsi_queue_it(fc, fc->rst_pkt, fcmd, 0);
spin_unlock_irqrestore(SCpnt->device->host->host_lock, flags);
down(&sem);

3
drivers/message/fusion/mptscsih.c
View File

@ -1865,7 +1865,6 @@ mptscsih_bus_reset(struct scsi_cmnd * SCpnt)
hd->timeouts++;
/* We are now ready to execute the task management request. */
spin_unlock_irq(host_lock);
if (mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
SCpnt->device->channel, 0, 0, 0, 5 /* 5 second timeout */)
< 0){
@ -1881,7 +1880,7 @@ mptscsih_bus_reset(struct scsi_cmnd * SCpnt)
spin_lock_irq(host_lock);
return FAILED;
}
spin_lock_irq(host_lock);
return SUCCESS;
}

3
drivers/s390/scsi/zfcp_scsi.c
View File

@ -731,8 +731,6 @@ zfcp_scsi_eh_bus_reset_handler(struct scsi_cmnd *scpnt)
struct zfcp_unit *unit;
struct Scsi_Host *scsi_host = scpnt->device->host;
spin_unlock_irq(scsi_host->host_lock);
unit = (struct zfcp_unit *) scpnt->device->hostdata;
ZFCP_LOG_NORMAL("bus reset because of problems with "
"unit 0x%016Lx\n", unit->fcp_lun);
@ -740,7 +738,6 @@ zfcp_scsi_eh_bus_reset_handler(struct scsi_cmnd *scpnt)
zfcp_erp_wait(unit->port->adapter);
retval = SUCCESS;
spin_lock_irq(scsi_host->host_lock);
return retval;
}

9
drivers/scsi/53c700.c
View File

@ -1957,23 +1957,30 @@ NCR_700_bus_reset(struct scsi_cmnd * SCp)
printk(KERN_INFO "scsi%d (%d:%d) New error handler wants BUS reset, cmd %p\n\t",
SCp->device->host->host_no, SCp->device->id, SCp->device->lun, SCp);
scsi_print_command(SCp);
/* In theory, eh_complete should always be null because the
* eh is single threaded, but just in case we're handling a
* reset via sg or something */
while(hostdata->eh_complete != NULL) {
spin_lock_irq(SCp->device->host->host_lock);
while (hostdata->eh_complete != NULL) {
spin_unlock_irq(SCp->device->host->host_lock);
msleep_interruptible(100);
spin_lock_irq(SCp->device->host->host_lock);
}
hostdata->eh_complete = &complete;
NCR_700_internal_bus_reset(SCp->device->host);
spin_unlock_irq(SCp->device->host->host_lock);
wait_for_completion(&complete);
spin_lock_irq(SCp->device->host->host_lock);
hostdata->eh_complete = NULL;
/* Revalidate the transport parameters of the failing device */
if(hostdata->fast)
spi_schedule_dv_device(SCp->device);
spin_unlock_irq(SCp->device->host->host_lock);
return SUCCESS;
}

16
drivers/scsi/NCR5380.c
View File

@ -2825,11 +2825,17 @@ static int NCR5380_abort(Scsi_Cmnd * cmd) {
* Locks: host lock taken by caller
*/
static int NCR5380_bus_reset(Scsi_Cmnd * cmd) {
NCR5380_local_declare();
NCR5380_setup(cmd->device->host);
static int NCR5380_bus_reset(Scsi_Cmnd * cmd)
{
struct Scsi_Host *instance = cmd->device->host;
NCR5380_local_declare();
NCR5380_setup(instance);
NCR5380_print_status(instance);
spin_lock_irq(instance->host_lock);
do_reset(instance);
spin_unlock_irq(instance->host_lock);
NCR5380_print_status(cmd->device->host);
do_reset(cmd->device->host);
return SUCCESS;
}

4
drivers/scsi/NCR53C9x.c
View File

@ -1467,14 +1467,12 @@ int esp_reset(Scsi_Cmnd *SCptr)
{
struct NCR_ESP *esp = (struct NCR_ESP *) SCptr->device->host->hostdata;
spin_lock_irq(esp->ehost->host_lock);
(void) esp_do_resetbus(esp, esp->eregs);
spin_unlock_irq(esp->ehost->host_lock);
wait_event(esp->reset_queue, (esp->resetting_bus == 0));
spin_lock_irq(esp->ehost->host_lock);
return SUCCESS;
}

4
drivers/scsi/a2091.c
View File

@ -221,7 +221,11 @@ int __init a2091_detect(Scsi_Host_Template *tpnt)
static int a2091_bus_reset(Scsi_Cmnd *cmd)
{
/* FIXME perform bus-specific reset */
spin_lock_irq(cmd->device->host->host_lock);
wd33c93_host_reset(cmd);
spin_unlock_irq(cmd->device->host->host_lock);
return SUCCESS;
}

4
drivers/scsi/a3000.c
View File

@ -208,7 +208,11 @@ fail_register:
static int a3000_bus_reset(Scsi_Cmnd *cmd)
{
/* FIXME perform bus-specific reset */
spin_lock_irq(cmd->device->host->host_lock);
wd33c93_host_reset(cmd);
spin_unlock_irq(cmd->device->host->host_lock);
return SUCCESS;
}

4
drivers/scsi/aha1542.c
View File

@ -1464,8 +1464,8 @@ static int aha1542_bus_reset(Scsi_Cmnd * SCpnt)
* check for timeout, and if we are doing something like this
* we are pretty desperate anyways.
*/
spin_unlock_irq(SCpnt->device->host->host_lock);
ssleep(4);
spin_lock_irq(SCpnt->device->host->host_lock);
WAIT(STATUS(SCpnt->device->host->io_port),
@ -1503,9 +1503,11 @@ static int aha1542_bus_reset(Scsi_Cmnd * SCpnt)
}
}
spin_unlock_irq(SCpnt->device->host->host_lock);
return SUCCESS;
fail:
spin_unlock_irq(SCpnt->device->host->host_lock);
return FAILED;
}

4
drivers/scsi/aic7xxx/aic79xx_osm.c
View File

@ -1591,11 +1591,11 @@ ahd_linux_bus_reset(Scsi_Cmnd *cmd)
printf("%s: Bus reset called for cmd %p\n",
ahd_name(ahd), cmd);
#endif
ahd_midlayer_entrypoint_lock(ahd, &s);
ahd_lock(ahd, &s);
found = ahd_reset_channel(ahd, cmd->device->channel + 'A',
/*initiate reset*/TRUE);
ahd_linux_run_complete_queue(ahd);
ahd_midlayer_entrypoint_unlock(ahd, &s);
ahd_unlock(ahd, &s);
if (bootverbose)
printf("%s: SCSI bus reset delivered. "

4
drivers/scsi/aic7xxx/aic7xxx_osm.c
View File

@ -829,10 +829,14 @@ ahc_linux_bus_reset(struct scsi_cmnd *cmd)
{
struct ahc_softc *ahc;
int found;
unsigned long flags;
ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
ahc_lock(ahc, &flags);
found = ahc_reset_channel(ahc, cmd->device->channel + 'A',
/*initiate reset*/TRUE);
ahc_unlock(ahc, &flags);
if (bootverbose)
printf("%s: SCSI bus reset delivered. "

12
drivers/scsi/dc395x.c
View File

@ -1310,7 +1310,7 @@ static void reset_dev_param(struct AdapterCtlBlk *acb)
* @cmd - some command for this host (for fetching hooks)
* Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
*/
static int dc395x_eh_bus_reset(struct scsi_cmnd *cmd)
static int __dc395x_eh_bus_reset(struct scsi_cmnd *cmd)
{
struct AdapterCtlBlk *acb =
(struct AdapterCtlBlk *)cmd->device->host->hostdata;
@ -1356,6 +1356,16 @@ static int dc395x_eh_bus_reset(struct scsi_cmnd *cmd)
return SUCCESS;
}
static int dc395x_eh_bus_reset(struct scsi_cmnd *cmd)
{
int rc;
spin_lock_irq(cmd->device->host->host_lock);
rc = __dc395x_eh_bus_reset(cmd);
spin_unlock_irq(cmd->device->host->host_lock);
return rc;
}
/*
* abort an errant SCSI command

5
drivers/scsi/fd_mcs.c
View File

@ -1243,6 +1243,7 @@ static int fd_mcs_abort(Scsi_Cmnd * SCpnt)
static int fd_mcs_bus_reset(Scsi_Cmnd * SCpnt) {
struct Scsi_Host *shpnt = SCpnt->device->host;
unsigned long flags;
#if DEBUG_RESET
static int called_once = 0;
@ -1259,6 +1260,8 @@ static int fd_mcs_bus_reset(Scsi_Cmnd * SCpnt) {
called_once = 1;
#endif
spin_lock_irqsave(shpnt->host_lock, flags);
outb(1, SCSI_Cntl_port);
do_pause(2);
outb(0, SCSI_Cntl_port);
@ -1266,6 +1269,8 @@ static int fd_mcs_bus_reset(Scsi_Cmnd * SCpnt) {
outb(0, SCSI_Mode_Cntl_port);
outb(PARITY_MASK, TMC_Cntl_port);
spin_unlock_irqrestore(shpnt->host_lock, flags);
/* Unless this is the very first call (i.e., SCPnt == NULL), everything
is probably hosed at this point. We will, however, try to keep
things going by informing the high-level code that we need help. */

6
drivers/scsi/fdomain.c
View File

@ -1543,12 +1543,18 @@ static int fdomain_16x0_abort(struct scsi_cmnd *SCpnt)
int fdomain_16x0_bus_reset(struct scsi_cmnd *SCpnt)
{
unsigned long flags;
local_irq_save(flags);
outb(1, port_base + SCSI_Cntl);
do_pause( 2 );
outb(0, port_base + SCSI_Cntl);
do_pause( 115 );
outb(0, port_base + SCSI_Mode_Cntl);
outb(PARITY_MASK, port_base + TMC_Cntl);
local_irq_restore(flags);
return SUCCESS;
}

4
drivers/scsi/gvp11.c
View File

@ -345,7 +345,11 @@ release:
static int gvp11_bus_reset(Scsi_Cmnd *cmd)
{
/* FIXME perform bus-specific reset */
spin_lock_irq(cmd->device->host->host_lock);
wd33c93_host_reset(cmd);
spin_unlock_irq(cmd->device->host->host_lock);
return SUCCESS;
}

9
drivers/scsi/imm.c
View File

@ -18,6 +18,7 @@
#include <linux/blkdev.h>
#include <linux/parport.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <scsi/scsi.h>
@ -610,9 +611,9 @@ static int imm_init(imm_struct *dev)
if (imm_connect(dev, 0) != 1)
return -EIO;
imm_reset_pulse(dev->base);
udelay(1000); /* Delay to allow devices to settle */
mdelay(1); /* Delay to allow devices to settle */
imm_disconnect(dev);
udelay(1000); /* Another delay to allow devices to settle */
mdelay(1); /* Another delay to allow devices to settle */
return device_check(dev);
}
@ -1026,9 +1027,9 @@ static int imm_reset(struct scsi_cmnd *cmd)
imm_connect(dev, CONNECT_NORMAL);
imm_reset_pulse(dev->base);
udelay(1000); /* device settle delay */
mdelay(1); /* device settle delay */
imm_disconnect(dev);
udelay(1000); /* device settle delay */
mdelay(1); /* device settle delay */
return SUCCESS;
}

6
drivers/scsi/in2000.c
View File

@ -1644,14 +1644,16 @@ static int in2000_bus_reset(Scsi_Cmnd * cmd)
struct Scsi_Host *instance;
struct IN2000_hostdata *hostdata;
int x;
unsigned long flags;
instance = cmd->device->host;
hostdata = (struct IN2000_hostdata *) instance->hostdata;
printk(KERN_WARNING "scsi%d: Reset. ", instance->host_no);
/* do scsi-reset here */
spin_lock_irqsave(instance->host_lock, flags);
/* do scsi-reset here */
reset_hardware(instance, RESET_CARD_AND_BUS);
for (x = 0; x < 8; x++) {
hostdata->busy[x] = 0;
@ -1668,6 +1670,8 @@ static int in2000_bus_reset(Scsi_Cmnd * cmd)
hostdata->outgoing_len = 0;
cmd->result = DID_RESET << 16;
spin_unlock_irqrestore(instance->host_lock, flags);
return SUCCESS;
}

4
drivers/scsi/initio.c
View File

@ -3014,7 +3014,11 @@ static int i91u_bus_reset(struct scsi_cmnd * SCpnt)
HCS *pHCB;
pHCB = (HCS *) SCpnt->device->host->base;
spin_lock_irq(SCpnt->device->host->host_lock);
tul_reset_scsi(pHCB, 0);
spin_unlock_irq(SCpnt->device->host->host_lock);
return SUCCESS;
}

12
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -1054,7 +1054,7 @@ lpfc_reset_lun_handler(struct scsi_cmnd *cmnd)
* Note: midlayer calls this function with the host_lock held
*/
static int
lpfc_reset_bus_handler(struct scsi_cmnd *cmnd)
__lpfc_reset_bus_handler(struct scsi_cmnd *cmnd)
{
struct Scsi_Host *shost = cmnd->device->host;
struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0];
@ -1143,6 +1143,16 @@ out:
return ret;
}
static int
lpfc_reset_bus_handler(struct scsi_cmnd *cmnd)
{
int rc;
spin_lock_irq(cmnd->device->host->host_lock);
rc = __lpfc_reset_bus_handler(cmnd);
spin_unlock_irq(cmnd->device->host->host_lock);
return rc;
}
static int
lpfc_slave_alloc(struct scsi_device *sdev)
{

4
drivers/scsi/mvme147.c
View File

@ -116,7 +116,11 @@ int mvme147_detect(Scsi_Host_Template *tpnt)
static int mvme147_bus_reset(Scsi_Cmnd *cmd)
{
/* FIXME perform bus-specific reset */
spin_lock_irq(cmd->device->host->host_lock);
wd33c93_host_reset(cmd);
spin_unlock_irq(cmd->device->host->host_lock);
return SUCCESS;
}

3
drivers/scsi/nsp32.c
View File

@ -2987,6 +2987,8 @@ static int nsp32_eh_bus_reset(struct scsi_cmnd *SCpnt)
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
unsigned int base = SCpnt->device->host->io_port;
spin_lock_irq(SCpnt->device->host->host_lock);
nsp32_msg(KERN_INFO, "Bus Reset");
nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
@ -2994,6 +2996,7 @@ static int nsp32_eh_bus_reset(struct scsi_cmnd *SCpnt)
nsp32_do_bus_reset(data);
nsp32_write2(base, IRQ_CONTROL, 0);
spin_unlock_irq(SCpnt->device->host->host_lock);
return SUCCESS; /* SCSI bus reset is succeeded at any time. */
}

5
drivers/scsi/ppa.c
View File

@ -17,6 +17,7 @@
#include <linux/blkdev.h>
#include <linux/parport.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <scsi/scsi.h>
@ -891,9 +892,9 @@ static int ppa_reset(struct scsi_cmnd *cmd)
ppa_connect(dev, CONNECT_NORMAL);
ppa_reset_pulse(dev->base);
udelay(1000); /* device settle delay */
mdelay(1); /* device settle delay */
ppa_disconnect(dev);
udelay(1000); /* device settle delay */
mdelay(1); /* device settle delay */
return SUCCESS;
}

8
drivers/scsi/qla1280.c
View File

@ -1130,7 +1130,13 @@ qla1280_eh_device_reset(struct scsi_cmnd *cmd)
static int
qla1280_eh_bus_reset(struct scsi_cmnd *cmd)
{
return qla1280_error_action(cmd, BUS_RESET);
int rc;
spin_lock_irq(cmd->device->host->host_lock);
rc = qla1280_error_action(cmd, BUS_RESET);
spin_unlock_irq(cmd->device->host->host_lock);
return rc;
}
/**************************************************************************

4
drivers/scsi/qla2xxx/qla_os.c
View File

@ -753,8 +753,6 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
spin_unlock_irq(ha->host->host_lock);
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
DEBUG2(printk("%s failed:board disabled\n",__func__));
goto eh_bus_reset_done;
@ -776,8 +774,6 @@ eh_bus_reset_done:
qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
(ret == FAILED) ? "failed" : "succeded");
spin_lock_irq(ha->host->host_lock);
return ret;
}

6
drivers/scsi/qlogicfas408.c
View File

@ -511,8 +511,14 @@ int qlogicfas408_abort(Scsi_Cmnd * cmd)
int qlogicfas408_bus_reset(Scsi_Cmnd * cmd)
{
struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd);
unsigned long flags;
priv->qabort = 2;
spin_lock_irqsave(cmd->device->host->host_lock, flags);
ql_zap(priv);
spin_unlock_irqrestore(cmd->device->host->host_lock, flags);
return SUCCESS;
}

2
drivers/scsi/scsi_error.c
View File

@ -1053,9 +1053,7 @@ static int scsi_try_bus_reset(struct scsi_cmnd *scmd)
if (!scmd->device->host->hostt->eh_bus_reset_handler)
return FAILED;
spin_lock_irqsave(scmd->device->host->host_lock, flags);
rtn = scmd->device->host->hostt->eh_bus_reset_handler(scmd);
spin_unlock_irqrestore(scmd->device->host->host_lock, flags);
if (rtn == SUCCESS) {
if (!scmd->device->host->hostt->skip_settle_delay)

3
drivers/scsi/seagate.c
View File

@ -97,6 +97,7 @@
#include <linux/delay.h>
#include <linux/blkdev.h>
#include <linux/stat.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <asm/system.h>
@ -1631,7 +1632,7 @@ static int seagate_st0x_bus_reset(Scsi_Cmnd * SCpnt)
/* assert RESET signal on SCSI bus. */
WRITE_CONTROL (BASE_CMD | CMD_RST);
udelay (20 * 1000);
mdelay (20);
WRITE_CONTROL (BASE_CMD);
st0x_aborted = DID_RESET;

4
drivers/scsi/sgiwd93.c
View File

@ -310,7 +310,11 @@ int sgiwd93_release(struct Scsi_Host *instance)
static int sgiwd93_bus_reset(Scsi_Cmnd *cmd)
{
/* FIXME perform bus-specific reset */
spin_lock_irq(cmd->device->host->host_lock);
wd33c93_host_reset(cmd);
spin_unlock_irq(cmd->device->host->host_lock);
return SUCCESS;
}

8
drivers/scsi/sym53c8xx_2/sym_glue.c
View File

@ -878,7 +878,13 @@ static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd)
static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd)
{
return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd);
int rc;
spin_lock_irq(cmd->device->host->host_lock);
rc = sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd);
spin_unlock_irq(cmd->device->host->host_lock);
return rc;
}
static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd)

6
drivers/scsi/tmscsim.c
View File

@ -2120,6 +2120,8 @@ static int DC390_bus_reset (struct scsi_cmnd *cmd)
struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
u8 bval;
spin_lock_irq(cmd->device->host->host_lock);
bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
@ -2127,7 +2129,7 @@ static int DC390_bus_reset (struct scsi_cmnd *cmd)
dc390_ResetSCSIBus(pACB);
dc390_ResetDevParam(pACB);
udelay(1000);
mdelay(1);
pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
+ HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
@ -2142,6 +2144,8 @@ static int DC390_bus_reset (struct scsi_cmnd *cmd)
bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
spin_unlock_irq(cmd->device->host->host_lock);
return SUCCESS;
}

3
drivers/usb/storage/scsiglue.c
View File

@ -276,8 +276,6 @@ static int bus_reset(struct scsi_cmnd *srb)
US_DEBUGP("%s called\n", __FUNCTION__);
scsi_unlock(us_to_host(us));
/* The USB subsystem doesn't handle synchronisation between
* a device's several drivers. Therefore we reset only devices
* with just one interface, which we of course own. */
@ -304,7 +302,6 @@ static int bus_reset(struct scsi_cmnd *srb)
up(&(us->dev_semaphore));
/* lock the host for the return */
scsi_lock(us_to_host(us));
return result < 0 ? FAILED : SUCCESS;
}