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WSL2-Linux-Kernel
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[SCSI] zfcp: Use SCSI device data zfcp_scsi_dev instead of zfcp_unit 

This is the large change to switch from using the data in
zfcp_unit to zfcp_scsi_dev. Keeping everything working requires doing
the switch in one piece. To ensure that no code keeps using the data
in zfcp_unit, this patch also removes the data from zfcp_unit that is
now being replaced with zfcp_scsi_dev.

For zfcp, the scsi_device together with zfcp_scsi_dev exist from the
call of slave_alloc to the call of slave_destroy. The data in
zfcp_scsi_dev is initialized in zfcp_scsi_slave_alloc and the LUN is
opened; the final shutdown for the LUN is run from slave_destroy.

Where the scsi_device or zfcp_scsi_dev is needed, the pointer to the
scsi_device is passed as function argument and inside the function
converted to the pointer to zfcp_scsi_dev; this avoids back and forth
conversion betweeen scsi_device and zfcp_scsi_dev.

While changing the function arguments from zfcp_unit to scsi_device,
the functions names are renamed form "unit" to "lun". This is to have
a seperation between zfcp_scsi_dev/LUN and the zfcp_unit; only code
referring to the remaining configuration information in zfcp_unit
struct uses "unit".

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Christof Schmitt 2010-09-08 14:39:55 +02:00 коммит произвёл James Bottomley
Родитель fdbd1c5e27
Коммит b62a8d9b45
9 изменённых файлов: 480 добавлений и 465 удалений
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28
drivers/s390/scsi/zfcp_dbf.c
Просмотреть файл

@ -482,7 +482,7 @@ static int zfcp_dbf_rec_view_format(debug_info_t *id, struct debug_view *view,
zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.trigger.fcp_lun);
zfcp_dbf_out(&p, "adapter_status", "0x%08x", r->u.trigger.as);
zfcp_dbf_out(&p, "port_status", "0x%08x", r->u.trigger.ps);
zfcp_dbf_out(&p, "unit_status", "0x%08x", r->u.trigger.us);
zfcp_dbf_out(&p, "lun_status", "0x%08x", r->u.trigger.ls);
break;
case ZFCP_REC_DBF_ID_ACTION:
zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.action.action);
@ -600,19 +600,20 @@ void zfcp_dbf_rec_port(char *id, void *ref, struct zfcp_port *port)
}
/**
* zfcp_dbf_rec_unit - trace event for unit state change
* zfcp_dbf_rec_lun - trace event for LUN state change
* @id: identifier for trigger of state change
* @ref: additional reference (e.g. request)
* @unit: unit
* @sdev: SCSI device
*/
void zfcp_dbf_rec_unit(char *id, void *ref, struct zfcp_unit *unit)
void zfcp_dbf_rec_lun(char *id, void *ref, struct scsi_device *sdev)
{
struct zfcp_port *port = unit->port;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_port *port = zfcp_sdev->port;
struct zfcp_dbf *dbf = port->adapter->dbf;
zfcp_dbf_rec_target(id, ref, dbf, &unit->status,
&unit->erp_counter, port->wwpn, port->d_id,
unit->fcp_lun);
zfcp_dbf_rec_target(id, ref, dbf, &zfcp_sdev->status,
&zfcp_sdev->erp_counter, port->wwpn, port->d_id,
zfcp_scsi_dev_lun(sdev));
}
/**
@ -624,11 +625,11 @@ void zfcp_dbf_rec_unit(char *id, void *ref, struct zfcp_unit *unit)
* @action: address of error recovery action struct
* @adapter: adapter
* @port: port
* @unit: unit
* @sdev: SCSI device
*/
void zfcp_dbf_rec_trigger(char *id2, void *ref, u8 want, u8 need, void *action,
struct zfcp_adapter *adapter, struct zfcp_port *port,
struct zfcp_unit *unit)
struct scsi_device *sdev)
{
struct zfcp_dbf *dbf = adapter->dbf;
struct zfcp_dbf_rec_record *r = &dbf->rec_buf;
@ -647,9 +648,10 @@ void zfcp_dbf_rec_trigger(char *id2, void *ref, u8 want, u8 need, void *action,
r->u.trigger.ps = atomic_read(&port->status);
r->u.trigger.wwpn = port->wwpn;
}
if (unit)
r->u.trigger.us = atomic_read(&unit->status);
r->u.trigger.fcp_lun = unit ? unit->fcp_lun : ZFCP_DBF_INVALID_LUN;
if (sdev)
r->u.trigger.ls = atomic_read(&sdev_to_zfcp(sdev)->status);
r->u.trigger.fcp_lun = sdev ? zfcp_scsi_dev_lun(sdev) :
ZFCP_DBF_INVALID_LUN;
debug_event(dbf->rec, action ? 1 : 4, r, sizeof(*r));
spin_unlock_irqrestore(&dbf->rec_lock, flags);
}

12
drivers/s390/scsi/zfcp_dbf.h
Просмотреть файл

@ -60,7 +60,7 @@ struct zfcp_dbf_rec_record_trigger {
u8 need;
u32 as;
u32 ps;
u32 us;
u32 ls;
u64 ref;
u64 action;
u64 wwpn;
@ -350,16 +350,16 @@ void zfcp_dbf_scsi_abort(const char *tag, struct zfcp_dbf *dbf,
/**
* zfcp_dbf_scsi_devreset - trace event for Logical Unit or Target Reset
* @tag: tag indicating success or failure of reset operation
* @scmnd: SCSI command which caused this error recovery
* @flag: indicates type of reset (Target Reset, Logical Unit Reset)
* @unit: unit that needs reset
* @scsi_cmnd: SCSI command which caused this error recovery
*/
static inline
void zfcp_dbf_scsi_devreset(const char *tag, u8 flag, struct zfcp_unit *unit,
struct scsi_cmnd *scsi_cmnd)
void zfcp_dbf_scsi_devreset(const char *tag, struct scsi_cmnd *scmnd, u8 flag)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
zfcp_dbf_scsi(flag == FCP_TMF_TGT_RESET ? "trst" : "lrst", tag, 1,
unit->port->adapter->dbf, scsi_cmnd, NULL, 0);
zfcp_sdev->port->adapter->dbf, scmnd, NULL, 0);
}
#endif /* ZFCP_DBF_H */

34
drivers/s390/scsi/zfcp_def.h
Просмотреть файл

@ -85,8 +85,8 @@ struct zfcp_reqlist;
#define ZFCP_STATUS_PORT_LINK_TEST 0x00000002
/* logical unit status */
#define ZFCP_STATUS_UNIT_SHARED 0x00000004
#define ZFCP_STATUS_UNIT_READONLY 0x00000008
#define ZFCP_STATUS_LUN_SHARED 0x00000004
#define ZFCP_STATUS_LUN_READONLY 0x00000008
/* FSF request status (this does not have a common part) */
#define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT 0x00000002
@ -118,7 +118,7 @@ struct zfcp_erp_action {
int action; /* requested action code */
struct zfcp_adapter *adapter; /* device which should be recovered */
struct zfcp_port *port;
struct zfcp_unit *unit;
struct scsi_device *sdev;
u32 status; /* recovery status */
u32 step; /* active step of this erp action */
unsigned long fsf_req_id;
@ -219,17 +219,23 @@ struct zfcp_port {
unsigned int starget_id;
};
/**
* struct zfcp_unit - LUN configured via zfcp sysfs
* @dev: struct device for sysfs representation and reference counting
* @list: entry in LUN/unit list per zfcp_port
* @port: reference to zfcp_port where this LUN is configured
* @fcp_lun: 64 bit LUN value
* @scsi_work: for running scsi_scan_target
*
* This is the representation of a LUN that has been configured for
* usage. The main data here is the 64 bit LUN value, data for
* running I/O and recovery is in struct zfcp_scsi_dev.
*/
struct zfcp_unit {
struct device dev;
struct list_head list; /* list of logical units */
struct zfcp_port *port; /* remote port of unit */
atomic_t status; /* status of this logical unit */
u64 fcp_lun; /* own FCP_LUN */
u32 handle; /* handle assigned by FSF */
struct scsi_device *device; /* scsi device struct pointer */
struct zfcp_erp_action erp_action; /* pending error recovery */
atomic_t erp_counter;
struct zfcp_latencies latencies;
struct device dev;
struct list_head list;
struct zfcp_port *port;
u64 fcp_lun;
struct work_struct scsi_work;
};
@ -288,7 +294,6 @@ static inline u64 zfcp_scsi_dev_lun(struct scsi_device *sdev)
* @erp_action: reference to erp action if request issued on behalf of ERP
* @pool: reference to memory pool if used for this request
* @issued: time when request was send (STCK)
* @unit: reference to unit if this request is a SCSI request
* @handler: handler which should be called to process response
*/
struct zfcp_fsf_req {
@ -306,7 +311,6 @@ struct zfcp_fsf_req {
struct zfcp_erp_action *erp_action;
mempool_t *pool;
unsigned long long issued;
struct zfcp_unit *unit;
void (*handler)(struct zfcp_fsf_req *);
};

369
drivers/s390/scsi/zfcp_erp.c
Просмотреть файл

@ -30,12 +30,12 @@ enum zfcp_erp_steps {
ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010,
ZFCP_ERP_STEP_PORT_CLOSING = 0x0100,
ZFCP_ERP_STEP_PORT_OPENING = 0x0800,
ZFCP_ERP_STEP_UNIT_CLOSING = 0x1000,
ZFCP_ERP_STEP_UNIT_OPENING = 0x2000,
ZFCP_ERP_STEP_LUN_CLOSING = 0x1000,
ZFCP_ERP_STEP_LUN_OPENING = 0x2000,
};
enum zfcp_erp_act_type {
ZFCP_ERP_ACTION_REOPEN_UNIT = 1,
ZFCP_ERP_ACTION_REOPEN_LUN = 1,
ZFCP_ERP_ACTION_REOPEN_PORT = 2,
ZFCP_ERP_ACTION_REOPEN_PORT_FORCED = 3,
ZFCP_ERP_ACTION_REOPEN_ADAPTER = 4,
@ -89,24 +89,24 @@ static void zfcp_erp_action_dismiss(struct zfcp_erp_action *act)
zfcp_erp_action_ready(act);
}
static void zfcp_erp_action_dismiss_unit(struct zfcp_unit *unit)
static void zfcp_erp_action_dismiss_lun(struct scsi_device *sdev)
{
if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
zfcp_erp_action_dismiss(&unit->erp_action);
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
zfcp_erp_action_dismiss(&zfcp_sdev->erp_action);
}
static void zfcp_erp_action_dismiss_port(struct zfcp_port *port)
{
struct zfcp_unit *unit;
struct scsi_device *sdev;
if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
zfcp_erp_action_dismiss(&port->erp_action);
else {
read_lock(&port->unit_list_lock);
list_for_each_entry(unit, &port->unit_list, list)
zfcp_erp_action_dismiss_unit(unit);
read_unlock(&port->unit_list_lock);
}
else
shost_for_each_device(sdev, port->adapter->scsi_host)
if (sdev_to_zfcp(sdev)->port == port)
zfcp_erp_action_dismiss_lun(sdev);
}
static void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
@ -125,15 +125,17 @@ static void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter,
struct zfcp_port *port,
struct zfcp_unit *unit)
struct scsi_device *sdev)
{
int need = want;
int u_status, p_status, a_status;
int l_status, p_status, a_status;
struct zfcp_scsi_dev *zfcp_sdev;
switch (want) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
u_status = atomic_read(&unit->status);
if (u_status & ZFCP_STATUS_COMMON_ERP_INUSE)
case ZFCP_ERP_ACTION_REOPEN_LUN:
zfcp_sdev = sdev_to_zfcp(sdev);
l_status = atomic_read(&zfcp_sdev->status);
if (l_status & ZFCP_STATUS_COMMON_ERP_INUSE)
return 0;
p_status = atomic_read(&port->status);
if (!(p_status & ZFCP_STATUS_COMMON_RUNNING) ||
@ -173,18 +175,22 @@ static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter,
static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status,
struct zfcp_adapter *adapter,
struct zfcp_port *port,
struct zfcp_unit *unit)
struct scsi_device *sdev)
{
struct zfcp_erp_action *erp_action;
struct zfcp_scsi_dev *zfcp_sdev;
switch (need) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
case ZFCP_ERP_ACTION_REOPEN_LUN:
zfcp_sdev = sdev_to_zfcp(sdev);
if (!(act_status & ZFCP_STATUS_ERP_NO_REF))
if (!get_device(&unit->dev))
if (scsi_device_get(sdev))
return NULL;
atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status);
erp_action = &unit->erp_action;
if (!(atomic_read(&unit->status) & ZFCP_STATUS_COMMON_RUNNING))
atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&zfcp_sdev->status);
erp_action = &zfcp_sdev->erp_action;
if (!(atomic_read(&zfcp_sdev->status) &
ZFCP_STATUS_COMMON_RUNNING))
act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY;
break;
@ -216,7 +222,7 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status,
memset(erp_action, 0, sizeof(struct zfcp_erp_action));
erp_action->adapter = adapter;
erp_action->port = port;
erp_action->unit = unit;
erp_action->sdev = sdev;
erp_action->action = need;
erp_action->status = act_status;
@ -225,8 +231,8 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status,
static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
struct zfcp_port *port,
struct zfcp_unit *unit, char *id, void *ref,
u32 act_status)
struct scsi_device *sdev,
char *id, void *ref, u32 act_status)
{
int retval = 1, need;
struct zfcp_erp_action *act = NULL;
@ -234,11 +240,11 @@ static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
if (!adapter->erp_thread)
return -EIO;
need = zfcp_erp_required_act(want, adapter, port, unit);
need = zfcp_erp_required_act(want, adapter, port, sdev);
if (!need)
goto out;
act = zfcp_erp_setup_act(need, act_status, adapter, port, unit);
act = zfcp_erp_setup_act(need, act_status, adapter, port, sdev);
if (!act)
goto out;
atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING, &adapter->status);
@ -248,7 +254,7 @@ static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
zfcp_dbf_rec_thread("eracte1", adapter->dbf);
retval = 0;
out:
zfcp_dbf_rec_trigger(id, ref, want, need, act, adapter, port, unit);
zfcp_dbf_rec_trigger(id, ref, want, need, act, adapter, port, sdev);
return retval;
}
@ -392,77 +398,81 @@ int zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id, void *ref)
return retval;
}
static void zfcp_erp_unit_block(struct zfcp_unit *unit, int clear_mask)
static void zfcp_erp_lun_block(struct scsi_device *sdev, int clear_mask)
{
zfcp_erp_modify_unit_status(unit, "erublk1", NULL,
ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask,
ZFCP_CLEAR);
zfcp_erp_modify_lun_status(sdev, "erlblk1", NULL,
ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask,
ZFCP_CLEAR);
}
static void _zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, char *id,
void *ref, u32 act_status)
static void _zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id,
void *ref, u32 act_status)
{
struct zfcp_adapter *adapter = unit->port->adapter;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
zfcp_erp_unit_block(unit, clear);
zfcp_erp_lun_block(sdev, clear);
if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
return;
zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_UNIT,
adapter, unit->port, unit, id, ref, act_status);
zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_LUN, adapter,
zfcp_sdev->port, sdev, id, ref, act_status);
}
/**
* zfcp_erp_unit_reopen - initiate reopen of a unit
* @unit: unit to be reopened
* @clear_mask: specifies flags in unit status to be cleared
* zfcp_erp_lun_reopen - initiate reopen of a LUN
* @sdev: SCSI device / LUN to be reopened
* @clear_mask: specifies flags in LUN status to be cleared
* Return: 0 on success, < 0 on error
*/
void zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, char *id,
void *ref)
void zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id,
void *ref)
{
unsigned long flags;
struct zfcp_port *port = unit->port;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_port *port = zfcp_sdev->port;
struct zfcp_adapter *adapter = port->adapter;
write_lock_irqsave(&adapter->erp_lock, flags);
_zfcp_erp_unit_reopen(unit, clear, id, ref, 0);
_zfcp_erp_lun_reopen(sdev, clear, id, ref, 0);
write_unlock_irqrestore(&adapter->erp_lock, flags);
}
/**
* zfcp_erp_unit_shutdown - Shutdown unit
* @unit: Unit to shut down.
* zfcp_erp_lun_shutdown - Shutdown LUN
* @sdev: SCSI device / LUN to shut down.
* @clear: Status flags to clear.
* @id: Id for debug trace event.
* @ref: Reference for debug trace event.
*/
void zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear, char *id,
void *ref)
void zfcp_erp_lun_shutdown(struct scsi_device *sdev, int clear, char *id,
void *ref)
{
int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
zfcp_erp_unit_reopen(unit, clear | flags, id, ref);
zfcp_erp_lun_reopen(sdev, clear | flags, id, ref);
}
/**
* zfcp_erp_unit_shutdown_wait - Shutdown unit and wait for erp completion
* @unit: Unit to shut down.
* zfcp_erp_lun_shutdown_wait - Shutdown LUN and wait for erp completion
* @sdev: SCSI device / LUN to shut down.
* @id: Id for debug trace event.
*
* Do not acquire a reference for the unit when creating the ERP
* Do not acquire a reference for the LUN when creating the ERP
* action. It is safe, because this function waits for the ERP to
* complete first.
* complete first. This allows to shutdown the LUN, even when the SCSI
* device is in the state SDEV_DEL when scsi_device_get will fail.
*/
void zfcp_erp_unit_shutdown_wait(struct zfcp_unit *unit, char *id)
void zfcp_erp_lun_shutdown_wait(struct scsi_device *sdev, char *id)
{
unsigned long flags;
struct zfcp_port *port = unit->port;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_port *port = zfcp_sdev->port;
struct zfcp_adapter *adapter = port->adapter;
int clear = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
write_lock_irqsave(&adapter->erp_lock, flags);
_zfcp_erp_unit_reopen(unit, clear, id, NULL, ZFCP_STATUS_ERP_NO_REF);
_zfcp_erp_lun_reopen(sdev, clear, id, NULL, ZFCP_STATUS_ERP_NO_REF);
write_unlock_irqrestore(&adapter->erp_lock, flags);
zfcp_erp_wait(adapter);
@ -492,11 +502,13 @@ static void zfcp_erp_port_unblock(struct zfcp_port *port)
atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status);
}
static void zfcp_erp_unit_unblock(struct zfcp_unit *unit)
static void zfcp_erp_lun_unblock(struct scsi_device *sdev)
{
if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status))
zfcp_dbf_rec_unit("eruubl1", NULL, unit);
atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status);
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &zfcp_sdev->status))
zfcp_dbf_rec_lun("erlubl1", NULL, sdev);
atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &zfcp_sdev->status);
}
static void zfcp_erp_action_to_running(struct zfcp_erp_action *erp_action)
@ -584,15 +596,14 @@ static void _zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter,
read_unlock(&adapter->port_list_lock);
}
static void _zfcp_erp_unit_reopen_all(struct zfcp_port *port, int clear,
char *id, void *ref)
static void _zfcp_erp_lun_reopen_all(struct zfcp_port *port, int clear,
char *id, void *ref)
{
struct zfcp_unit *unit;
struct scsi_device *sdev;
read_lock(&port->unit_list_lock);
list_for_each_entry(unit, &port->unit_list, list)
_zfcp_erp_unit_reopen(unit, clear, id, ref, 0);
read_unlock(&port->unit_list_lock);
shost_for_each_device(sdev, port->adapter->scsi_host)
if (sdev_to_zfcp(sdev)->port == port)
_zfcp_erp_lun_reopen(sdev, clear, id, ref, 0);
}
static void zfcp_erp_strategy_followup_failed(struct zfcp_erp_action *act)
@ -607,8 +618,8 @@ static void zfcp_erp_strategy_followup_failed(struct zfcp_erp_action *act)
case ZFCP_ERP_ACTION_REOPEN_PORT:
_zfcp_erp_port_reopen(act->port, 0, "ersff_3", NULL);
break;
case ZFCP_ERP_ACTION_REOPEN_UNIT:
_zfcp_erp_unit_reopen(act->unit, 0, "ersff_4", NULL, 0);
case ZFCP_ERP_ACTION_REOPEN_LUN:
_zfcp_erp_lun_reopen(act->sdev, 0, "ersff_4", NULL, 0);
break;
}
}
@ -623,7 +634,7 @@ static void zfcp_erp_strategy_followup_success(struct zfcp_erp_action *act)
_zfcp_erp_port_reopen(act->port, 0, "ersfs_2", NULL);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT:
_zfcp_erp_unit_reopen_all(act->port, 0, "ersfs_3", NULL);
_zfcp_erp_lun_reopen_all(act->port, 0, "ersfs_3", NULL);
break;
}
}
@ -767,7 +778,7 @@ static void zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *act)
zfcp_fsf_req_dismiss_all(adapter);
adapter->fsf_req_seq_no = 0;
zfcp_fc_wka_ports_force_offline(adapter->gs);
/* all ports and units are closed */
/* all ports and LUNs are closed */
zfcp_erp_modify_adapter_status(adapter, "erascl1", NULL,
ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
@ -958,82 +969,86 @@ close_init_done:
return zfcp_erp_port_strategy_open_common(erp_action);
}
static void zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *unit)
static void zfcp_erp_lun_strategy_clearstati(struct scsi_device *sdev)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_UNIT_SHARED |
ZFCP_STATUS_UNIT_READONLY,
&unit->status);
ZFCP_STATUS_LUN_SHARED | ZFCP_STATUS_LUN_READONLY,
&zfcp_sdev->status);
}
static int zfcp_erp_unit_strategy_close(struct zfcp_erp_action *erp_action)
static int zfcp_erp_lun_strategy_close(struct zfcp_erp_action *erp_action)
{
int retval = zfcp_fsf_close_unit(erp_action);
int retval = zfcp_fsf_close_lun(erp_action);
if (retval == -ENOMEM)
return ZFCP_ERP_NOMEM;
erp_action->step = ZFCP_ERP_STEP_UNIT_CLOSING;
erp_action->step = ZFCP_ERP_STEP_LUN_CLOSING;
if (retval)
return ZFCP_ERP_FAILED;
return ZFCP_ERP_CONTINUES;
}
static int zfcp_erp_unit_strategy_open(struct zfcp_erp_action *erp_action)
static int zfcp_erp_lun_strategy_open(struct zfcp_erp_action *erp_action)
{
int retval = zfcp_fsf_open_unit(erp_action);
int retval = zfcp_fsf_open_lun(erp_action);
if (retval == -ENOMEM)
return ZFCP_ERP_NOMEM;
erp_action->step = ZFCP_ERP_STEP_UNIT_OPENING;
erp_action->step = ZFCP_ERP_STEP_LUN_OPENING;
if (retval)
return ZFCP_ERP_FAILED;
return ZFCP_ERP_CONTINUES;
}
static int zfcp_erp_unit_strategy(struct zfcp_erp_action *erp_action)
static int zfcp_erp_lun_strategy(struct zfcp_erp_action *erp_action)
{
struct zfcp_unit *unit = erp_action->unit;
struct scsi_device *sdev = erp_action->sdev;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
switch (erp_action->step) {
case ZFCP_ERP_STEP_UNINITIALIZED:
zfcp_erp_unit_strategy_clearstati(unit);
if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_OPEN)
return zfcp_erp_unit_strategy_close(erp_action);
zfcp_erp_lun_strategy_clearstati(sdev);
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_OPEN)
return zfcp_erp_lun_strategy_close(erp_action);
/* already closed, fall through */
case ZFCP_ERP_STEP_UNIT_CLOSING:
if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_OPEN)
case ZFCP_ERP_STEP_LUN_CLOSING:
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_OPEN)
return ZFCP_ERP_FAILED;
if (erp_action->status & ZFCP_STATUS_ERP_CLOSE_ONLY)
return ZFCP_ERP_EXIT;
return zfcp_erp_unit_strategy_open(erp_action);
return zfcp_erp_lun_strategy_open(erp_action);
case ZFCP_ERP_STEP_UNIT_OPENING:
if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_OPEN)
case ZFCP_ERP_STEP_LUN_OPENING:
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_OPEN)
return ZFCP_ERP_SUCCEEDED;
}
return ZFCP_ERP_FAILED;
}
static int zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result)
static int zfcp_erp_strategy_check_lun(struct scsi_device *sdev, int result)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
switch (result) {
case ZFCP_ERP_SUCCEEDED :
atomic_set(&unit->erp_counter, 0);
zfcp_erp_unit_unblock(unit);
atomic_set(&zfcp_sdev->erp_counter, 0);
zfcp_erp_lun_unblock(sdev);
break;
case ZFCP_ERP_FAILED :
atomic_inc(&unit->erp_counter);
if (atomic_read(&unit->erp_counter) > ZFCP_MAX_ERPS) {
dev_err(&unit->port->adapter->ccw_device->dev,
"ERP failed for unit 0x%016Lx on "
atomic_inc(&zfcp_sdev->erp_counter);
if (atomic_read(&zfcp_sdev->erp_counter) > ZFCP_MAX_ERPS) {
dev_err(&zfcp_sdev->port->adapter->ccw_device->dev,
"ERP failed for LUN 0x%016Lx on "
"port 0x%016Lx\n",
(unsigned long long)unit->fcp_lun,
(unsigned long long)unit->port->wwpn);
zfcp_erp_unit_failed(unit, "erusck1", NULL);
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_lun_failed(sdev, "ersckl1", NULL);
}
break;
}
if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
zfcp_erp_unit_block(unit, 0);
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
zfcp_erp_lun_block(sdev, 0);
result = ZFCP_ERP_EXIT;
}
return result;
@ -1101,12 +1116,12 @@ static int zfcp_erp_strategy_check_target(struct zfcp_erp_action *erp_action,
{
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_port *port = erp_action->port;
struct zfcp_unit *unit = erp_action->unit;
struct scsi_device *sdev = erp_action->sdev;
switch (erp_action->action) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
result = zfcp_erp_strategy_check_unit(unit, result);
case ZFCP_ERP_ACTION_REOPEN_LUN:
result = zfcp_erp_strategy_check_lun(sdev, result);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
@ -1141,7 +1156,8 @@ static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
int action = act->action;
struct zfcp_adapter *adapter = act->adapter;
struct zfcp_port *port = act->port;
struct zfcp_unit *unit = act->unit;
struct scsi_device *sdev = act->sdev;
struct zfcp_scsi_dev *zfcp_sdev;
u32 erp_status = act->status;
switch (action) {
@ -1164,11 +1180,12 @@ static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
}
break;
case ZFCP_ERP_ACTION_REOPEN_UNIT:
if (zfcp_erp_strat_change_det(&unit->status, erp_status)) {
_zfcp_erp_unit_reopen(unit,
ZFCP_STATUS_COMMON_ERP_FAILED,
"ersscg3", NULL, 0);
case ZFCP_ERP_ACTION_REOPEN_LUN:
zfcp_sdev = sdev_to_zfcp(sdev);
if (zfcp_erp_strat_change_det(&zfcp_sdev->status, erp_status)) {
_zfcp_erp_lun_reopen(sdev,
ZFCP_STATUS_COMMON_ERP_FAILED,
"ersscg3", NULL, 0);
return ZFCP_ERP_EXIT;
}
break;
@ -1179,6 +1196,7 @@ static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
static void zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
{
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_scsi_dev *zfcp_sdev;
adapter->erp_total_count--;
if (erp_action->status & ZFCP_STATUS_ERP_LOWMEM) {
@ -1190,9 +1208,10 @@ static void zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
zfcp_dbf_rec_action("eractd1", erp_action);
switch (erp_action->action) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
case ZFCP_ERP_ACTION_REOPEN_LUN:
zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&erp_action->unit->status);
&zfcp_sdev->status);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
@ -1212,12 +1231,12 @@ static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
{
struct zfcp_adapter *adapter = act->adapter;
struct zfcp_port *port = act->port;
struct zfcp_unit *unit = act->unit;
struct scsi_device *sdev = act->sdev;
switch (act->action) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
case ZFCP_ERP_ACTION_REOPEN_LUN:
if (!(act->status & ZFCP_STATUS_ERP_NO_REF))
put_device(&unit->dev);
scsi_device_put(sdev);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT:
@ -1248,8 +1267,8 @@ static int zfcp_erp_strategy_do_action(struct zfcp_erp_action *erp_action)
return zfcp_erp_port_forced_strategy(erp_action);
case ZFCP_ERP_ACTION_REOPEN_PORT:
return zfcp_erp_port_strategy(erp_action);
case ZFCP_ERP_ACTION_REOPEN_UNIT:
return zfcp_erp_unit_strategy(erp_action);
case ZFCP_ERP_ACTION_REOPEN_LUN:
return zfcp_erp_lun_strategy(erp_action);
}
return ZFCP_ERP_FAILED;
}
@ -1426,15 +1445,15 @@ void zfcp_erp_port_failed(struct zfcp_port *port, char *id, void *ref)
}
/**
* zfcp_erp_unit_failed - Set unit status to failed.
* @unit: Failed unit.
* zfcp_erp_lun_failed - Set LUN status to failed.
* @sdev: Failed SCSI device / LUN
* @id: Event id for debug trace.
* @ref: Reference for debug trace.
*/
void zfcp_erp_unit_failed(struct zfcp_unit *unit, char *id, void *ref)
void zfcp_erp_lun_failed(struct scsi_device *sdev, char *id, void *ref)
{
zfcp_erp_modify_unit_status(unit, id, ref,
ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
zfcp_erp_modify_lun_status(sdev, id, ref,
ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
}
/**
@ -1456,7 +1475,7 @@ void zfcp_erp_wait(struct zfcp_adapter *adapter)
* @mask: status bits to change
* @set_or_clear: ZFCP_SET or ZFCP_CLEAR
*
* Changes in common status bits are propagated to attached ports and units.
* Changes in common status bits are propagated to attached ports and LUNs.
*/
void zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter, char *id,
void *ref, u32 mask, int set_or_clear)
@ -1494,13 +1513,12 @@ void zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter, char *id,
* @mask: status bits to change
* @set_or_clear: ZFCP_SET or ZFCP_CLEAR
*
* Changes in common status bits are propagated to attached units.
* Changes in common status bits are propagated to attached LUNs.
*/
void zfcp_erp_modify_port_status(struct zfcp_port *port, char *id, void *ref,
u32 mask, int set_or_clear)
{
struct zfcp_unit *unit;
unsigned long flags;
struct scsi_device *sdev;
u32 common_mask = mask & ZFCP_COMMON_FLAGS;
if (set_or_clear == ZFCP_SET) {
@ -1515,36 +1533,37 @@ void zfcp_erp_modify_port_status(struct zfcp_port *port, char *id, void *ref,
atomic_set(&port->erp_counter, 0);
}
if (common_mask) {
read_lock_irqsave(&port->unit_list_lock, flags);
list_for_each_entry(unit, &port->unit_list, list)
zfcp_erp_modify_unit_status(unit, id, ref, common_mask,
set_or_clear);
read_unlock_irqrestore(&port->unit_list_lock, flags);
}
if (common_mask)
shost_for_each_device(sdev, port->adapter->scsi_host)
if (sdev_to_zfcp(sdev)->port == port)
zfcp_erp_modify_lun_status(sdev, id, ref,
common_mask,
set_or_clear);
}
/**
* zfcp_erp_modify_unit_status - change unit status bits
* @unit: unit to change the status bits
* zfcp_erp_modify_lun_status - change LUN status bits
* @sdev: SCSI device / LUN where to change the status bits
* @id: id for the debug trace
* @ref: reference for the debug trace
* @mask: status bits to change
* @set_or_clear: ZFCP_SET or ZFCP_CLEAR
*/
void zfcp_erp_modify_unit_status(struct zfcp_unit *unit, char *id, void *ref,
u32 mask, int set_or_clear)
void zfcp_erp_modify_lun_status(struct scsi_device *sdev, char *id, void *ref,
u32 mask, int set_or_clear)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
if (set_or_clear == ZFCP_SET) {
if (status_change_set(mask, &unit->status))
zfcp_dbf_rec_unit(id, ref, unit);
atomic_set_mask(mask, &unit->status);
if (status_change_set(mask, &zfcp_sdev->status))
zfcp_dbf_rec_lun(id, ref, sdev);
atomic_set_mask(mask, &zfcp_sdev->status);
} else {
if (status_change_clear(mask, &unit->status))
zfcp_dbf_rec_unit(id, ref, unit);
atomic_clear_mask(mask, &unit->status);
if (status_change_clear(mask, &zfcp_sdev->status))
zfcp_dbf_rec_lun(id, ref, sdev);
atomic_clear_mask(mask, &zfcp_sdev->status);
if (mask & ZFCP_STATUS_COMMON_ERP_FAILED) {
atomic_set(&unit->erp_counter, 0);
atomic_set(&zfcp_sdev->erp_counter, 0);
}
}
}
@ -1563,16 +1582,16 @@ void zfcp_erp_port_boxed(struct zfcp_port *port, char *id, void *ref)
}
/**
* zfcp_erp_unit_boxed - Mark unit as "boxed" and start ERP
* @port: The "boxed" unit.
* zfcp_erp_lun_boxed - Mark LUN as "boxed" and start ERP
* @sdev: The "boxed" SCSI device / LUN.
* @id: The debug trace id.
* @id: Reference for the debug trace.
* @ref: Reference for the debug trace.
*/
void zfcp_erp_unit_boxed(struct zfcp_unit *unit, char *id, void *ref)
void zfcp_erp_lun_boxed(struct scsi_device *sdev, char *id, void *ref)
{
zfcp_erp_modify_unit_status(unit, id, ref,
ZFCP_STATUS_COMMON_ACCESS_BOXED, ZFCP_SET);
zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
zfcp_erp_modify_lun_status(sdev, id, ref,
ZFCP_STATUS_COMMON_ACCESS_BOXED, ZFCP_SET);
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
/**
@ -1582,7 +1601,7 @@ void zfcp_erp_unit_boxed(struct zfcp_unit *unit, char *id, void *ref)
* @ref: reference for debug trace
*
* Since the adapter has denied access, stop using the port and the
* attached units.
* attached LUNs.
*/
void zfcp_erp_port_access_denied(struct zfcp_port *port, char *id, void *ref)
{
@ -1592,44 +1611,44 @@ void zfcp_erp_port_access_denied(struct zfcp_port *port, char *id, void *ref)
}
/**
* zfcp_erp_unit_access_denied - Adapter denied access to unit.
* @unit: unit where access has been denied
* zfcp_erp_lun_access_denied - Adapter denied access to LUN.
* @sdev: SCSI device / LUN where access has been denied
* @id: id for debug trace
* @ref: reference for debug trace
*
* Since the adapter has denied access, stop using the unit.
* Since the adapter has denied access, stop using the LUN.
*/
void zfcp_erp_unit_access_denied(struct zfcp_unit *unit, char *id, void *ref)
void zfcp_erp_lun_access_denied(struct scsi_device *sdev, char *id, void *ref)
{
zfcp_erp_modify_unit_status(unit, id, ref,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
zfcp_erp_modify_lun_status(sdev, id, ref,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
}
static void zfcp_erp_unit_access_changed(struct zfcp_unit *unit, char *id,
void *ref)
static void zfcp_erp_lun_access_changed(struct scsi_device *sdev, char *id,
void *ref)
{
int status = atomic_read(&unit->status);
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
int status = atomic_read(&zfcp_sdev->status);
if (!(status & (ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_COMMON_ACCESS_BOXED)))
return;
zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
static void zfcp_erp_port_access_changed(struct zfcp_port *port, char *id,
void *ref)
{
struct zfcp_unit *unit;
unsigned long flags;
struct scsi_device *sdev;
int status = atomic_read(&port->status);
if (!(status & (ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_COMMON_ACCESS_BOXED))) {
read_lock_irqsave(&port->unit_list_lock, flags);
list_for_each_entry(unit, &port->unit_list, list)
zfcp_erp_unit_access_changed(unit, id, ref);
read_unlock_irqrestore(&port->unit_list_lock, flags);
shost_for_each_device(sdev, port->adapter->scsi_host)
if (sdev_to_zfcp(sdev)->port == port)
zfcp_erp_lun_access_changed(sdev, id, ref);
return;
}

32
drivers/s390/scsi/zfcp_ext.h
Просмотреть файл

@ -42,10 +42,10 @@ extern void zfcp_dbf_rec_thread(char *, struct zfcp_dbf *);
extern void zfcp_dbf_rec_thread_lock(char *, struct zfcp_dbf *);
extern void zfcp_dbf_rec_adapter(char *, void *, struct zfcp_dbf *);
extern void zfcp_dbf_rec_port(char *, void *, struct zfcp_port *);
extern void zfcp_dbf_rec_unit(char *, void *, struct zfcp_unit *);
extern void zfcp_dbf_rec_lun(char *, void *, struct scsi_device *);
extern void zfcp_dbf_rec_trigger(char *, void *, u8, u8, void *,
struct zfcp_adapter *, struct zfcp_port *,
struct zfcp_unit *);
struct scsi_device *);
extern void zfcp_dbf_rec_action(char *, struct zfcp_erp_action *);
extern void _zfcp_dbf_hba_fsf_response(const char *, int, struct zfcp_fsf_req *,
struct zfcp_dbf *);
@ -76,20 +76,20 @@ extern void zfcp_erp_port_shutdown(struct zfcp_port *, int, char *, void *);
extern void zfcp_erp_port_forced_reopen(struct zfcp_port *, int, char *,
void *);
extern void zfcp_erp_port_failed(struct zfcp_port *, char *, void *);
extern void zfcp_erp_modify_unit_status(struct zfcp_unit *, char *, void *, u32,
int);
extern void zfcp_erp_unit_reopen(struct zfcp_unit *, int, char *, void *);
extern void zfcp_erp_unit_shutdown(struct zfcp_unit *, int, char *, void *);
extern void zfcp_erp_unit_shutdown_wait(struct zfcp_unit *, char *);
extern void zfcp_erp_unit_failed(struct zfcp_unit *, char *, void *);
extern void zfcp_erp_modify_lun_status(struct scsi_device *, char *, void *,
u32, int);
extern void zfcp_erp_lun_reopen(struct scsi_device *, int, char *, void *);
extern void zfcp_erp_lun_shutdown(struct scsi_device *, int, char *, void *);
extern void zfcp_erp_lun_shutdown_wait(struct scsi_device *, char *);
extern void zfcp_erp_lun_failed(struct scsi_device *, char *, void *);
extern int zfcp_erp_thread_setup(struct zfcp_adapter *);
extern void zfcp_erp_thread_kill(struct zfcp_adapter *);
extern void zfcp_erp_wait(struct zfcp_adapter *);
extern void zfcp_erp_notify(struct zfcp_erp_action *, unsigned long);
extern void zfcp_erp_port_boxed(struct zfcp_port *, char *, void *);
extern void zfcp_erp_unit_boxed(struct zfcp_unit *, char *, void *);
extern void zfcp_erp_lun_boxed(struct scsi_device *, char *, void *);
extern void zfcp_erp_port_access_denied(struct zfcp_port *, char *, void *);
extern void zfcp_erp_unit_access_denied(struct zfcp_unit *, char *, void *);
extern void zfcp_erp_lun_access_denied(struct scsi_device *, char *, void *);
extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *, char *,
void *);
extern void zfcp_erp_timeout_handler(unsigned long);
@ -117,8 +117,8 @@ extern int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *);
extern int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *);
extern int zfcp_fsf_close_port(struct zfcp_erp_action *);
extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *);
extern int zfcp_fsf_open_unit(struct zfcp_erp_action *);
extern int zfcp_fsf_close_unit(struct zfcp_erp_action *);
extern int zfcp_fsf_open_lun(struct zfcp_erp_action *);
extern int zfcp_fsf_close_lun(struct zfcp_erp_action *);
extern int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *,
struct fsf_qtcb_bottom_config *);
@ -134,12 +134,10 @@ extern int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *, struct zfcp_fsf_ct_els *,
mempool_t *, unsigned int);
extern int zfcp_fsf_send_els(struct zfcp_adapter *, u32,
struct zfcp_fsf_ct_els *, unsigned int);
extern int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *,
struct scsi_cmnd *);
extern int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *);
extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *, u8);
extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long,
struct zfcp_unit *);
extern struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *, u8);
extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *);
extern void zfcp_fsf_reqid_check(struct zfcp_qdio *, int);
/* zfcp_qdio.c */

279
drivers/s390/scsi/zfcp_fsf.c
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@ -86,17 +86,19 @@ static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req,
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req,
struct zfcp_unit *unit)
static void zfcp_fsf_access_denied_lun(struct zfcp_fsf_req *req,
struct scsi_device *sdev)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct fsf_qtcb_header *header = &req->qtcb->header;
dev_warn(&req->adapter->ccw_device->dev,
"Access denied to unit 0x%016Lx on port 0x%016Lx\n",
(unsigned long long)unit->fcp_lun,
(unsigned long long)unit->port->wwpn);
"Access denied to LUN 0x%016Lx on port 0x%016Lx\n",
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
zfcp_erp_unit_access_denied(unit, "fsuad_1", req);
zfcp_erp_lun_access_denied(sdev, "fsadl_1", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
@ -811,7 +813,8 @@ out:
static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
{
struct zfcp_unit *unit = req->data;
struct scsi_device *sdev = req->data;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
@ -820,14 +823,15 @@ static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
switch (req->qtcb->header.fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID:
if (fsq->word[0] == fsq->word[1]) {
zfcp_erp_adapter_reopen(unit->port->adapter, 0,
zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
"fsafch1", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
break;
case FSF_LUN_HANDLE_NOT_VALID:
if (fsq->word[0] == fsq->word[1]) {
zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req);
zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2",
req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
break;
@ -835,17 +839,17 @@ static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
break;
case FSF_PORT_BOXED:
zfcp_erp_port_boxed(unit->port, "fsafch3", req);
zfcp_erp_port_boxed(zfcp_sdev->port, "fsafch3", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_LUN_BOXED:
zfcp_erp_unit_boxed(unit, "fsafch4", req);
zfcp_erp_lun_boxed(sdev, "fsafch4", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_ADAPTER_STATUS_AVAILABLE:
switch (fsq->word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
zfcp_fc_test_link(unit->port);
zfcp_fc_test_link(zfcp_sdev->port);
/* fall through */
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
@ -859,17 +863,18 @@ static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
}
/**
* zfcp_fsf_abort_fcp_command - abort running SCSI command
* @old_req_id: unsigned long
* @unit: pointer to struct zfcp_unit
* zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
* @scmnd: The SCSI command to abort
* Returns: pointer to struct zfcp_fsf_req
*/
struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
struct zfcp_unit *unit)
struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
{
struct zfcp_fsf_req *req = NULL;
struct zfcp_qdio *qdio = unit->port->adapter->qdio;
struct scsi_device *sdev = scmnd->device;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
spin_lock_bh(&qdio->req_q_lock);
if (zfcp_qdio_sbal_get(qdio))
@ -882,16 +887,16 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
goto out;
}
if (unlikely(!(atomic_read(&unit->status) &
if (unlikely(!(atomic_read(&zfcp_sdev->status) &
ZFCP_STATUS_COMMON_UNBLOCKED)))
goto out_error_free;
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
req->data = unit;
req->data = zfcp_sdev;
req->handler = zfcp_fsf_abort_fcp_command_handler;
req->qtcb->header.lun_handle = unit->handle;
req->qtcb->header.port_handle = unit->port->handle;
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
req->qtcb->header.port_handle = zfcp_sdev->port->handle;
req->qtcb->bottom.support.req_handle = (u64) old_req_id;
zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
@ -1666,7 +1671,7 @@ static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
{
struct zfcp_port *port = req->data;
struct fsf_qtcb_header *header = &req->qtcb->header;
struct zfcp_unit *unit;
struct scsi_device *sdev;
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
return;
@ -1683,11 +1688,10 @@ static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
/* can't use generic zfcp_erp_modify_port_status because
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
read_lock(&port->unit_list_lock);
list_for_each_entry(unit, &port->unit_list, list)
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
&unit->status);
read_unlock(&port->unit_list_lock);
shost_for_each_device(sdev, port->adapter->scsi_host)
if (sdev_to_zfcp(sdev)->port == port)
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
&sdev_to_zfcp(sdev)->status);
zfcp_erp_port_boxed(port, "fscpph2", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
@ -1705,11 +1709,10 @@ static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port
*/
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
read_lock(&port->unit_list_lock);
list_for_each_entry(unit, &port->unit_list, list)
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
&unit->status);
read_unlock(&port->unit_list_lock);
shost_for_each_device(sdev, port->adapter->scsi_host)
if (sdev_to_zfcp(sdev)->port == port)
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
&sdev_to_zfcp(sdev)->status);
break;
}
}
@ -1758,10 +1761,11 @@ out:
return retval;
}
static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
{
struct zfcp_adapter *adapter = req->adapter;
struct zfcp_unit *unit = req->data;
struct scsi_device *sdev = req->data;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct fsf_qtcb_header *header = &req->qtcb->header;
struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
struct fsf_queue_designator *queue_designator =
@ -1773,24 +1777,24 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_COMMON_ACCESS_BOXED |
ZFCP_STATUS_UNIT_SHARED |
ZFCP_STATUS_UNIT_READONLY,
&unit->status);
ZFCP_STATUS_LUN_SHARED |
ZFCP_STATUS_LUN_READONLY,
&zfcp_sdev->status);
switch (header->fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID:
zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req);
zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1", req);
/* fall through */
case FSF_LUN_ALREADY_OPEN:
break;
case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_unit(req, unit);
atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
zfcp_fsf_access_denied_lun(req, sdev);
atomic_clear_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
atomic_clear_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
break;
case FSF_PORT_BOXED:
zfcp_erp_port_boxed(unit->port, "fsouh_2", req);
zfcp_erp_port_boxed(zfcp_sdev->port, "fsouh_2", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_LUN_SHARING_VIOLATION:
@ -1798,25 +1802,25 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
dev_warn(&adapter->ccw_device->dev,
"LUN 0x%Lx on port 0x%Lx is already in "
"use by CSS%d, MIF Image ID %x\n",
(unsigned long long)unit->fcp_lun,
(unsigned long long)unit->port->wwpn,
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn,
queue_designator->cssid,
queue_designator->hla);
else
zfcp_act_eval_err(adapter,
header->fsf_status_qual.word[2]);
zfcp_erp_unit_access_denied(unit, "fsouh_3", req);
atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
zfcp_erp_lun_access_denied(sdev, "fsolh_3", req);
atomic_clear_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
atomic_clear_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
dev_warn(&adapter->ccw_device->dev,
"No handle is available for LUN "
"0x%016Lx on port 0x%016Lx\n",
(unsigned long long)unit->fcp_lun,
(unsigned long long)unit->port->wwpn);
zfcp_erp_unit_failed(unit, "fsouh_4", req);
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_lun_failed(sdev, "fsolh_4", req);
/* fall through */
case FSF_INVALID_COMMAND_OPTION:
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
@ -1824,7 +1828,7 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
zfcp_fc_test_link(unit->port);
zfcp_fc_test_link(zfcp_sdev->port);
/* fall through */
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
@ -1833,8 +1837,8 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
break;
case FSF_GOOD:
unit->handle = header->lun_handle;
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
zfcp_sdev->lun_handle = header->lun_handle;
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
(adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
@ -1845,39 +1849,39 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
if (!exclusive)
atomic_set_mask(ZFCP_STATUS_UNIT_SHARED,
&unit->status);
atomic_set_mask(ZFCP_STATUS_LUN_SHARED,
&zfcp_sdev->status);
if (!readwrite) {
atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
&unit->status);
atomic_set_mask(ZFCP_STATUS_LUN_READONLY,
&zfcp_sdev->status);
dev_info(&adapter->ccw_device->dev,
"SCSI device at LUN 0x%016Lx on port "
"0x%016Lx opened read-only\n",
(unsigned long long)unit->fcp_lun,
(unsigned long long)unit->port->wwpn);
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
}
if (exclusive && !readwrite) {
dev_err(&adapter->ccw_device->dev,
"Exclusive read-only access not "
"supported (unit 0x%016Lx, "
"supported (LUN 0x%016Lx, "
"port 0x%016Lx)\n",
(unsigned long long)unit->fcp_lun,
(unsigned long long)unit->port->wwpn);
zfcp_erp_unit_failed(unit, "fsouh_5", req);
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_lun_failed(sdev, "fsolh_5", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req);
zfcp_erp_lun_shutdown(sdev, 0, "fsolh_6", req);
} else if (!exclusive && readwrite) {
dev_err(&adapter->ccw_device->dev,
"Shared read-write access not "
"supported (unit 0x%016Lx, port "
"supported (LUN 0x%016Lx, port "
"0x%016Lx)\n",
(unsigned long long)unit->fcp_lun,
(unsigned long long)unit->port->wwpn);
zfcp_erp_unit_failed(unit, "fsouh_7", req);
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_lun_failed(sdev, "fsolh_7", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req);
zfcp_erp_lun_shutdown(sdev, 0, "fsolh_8", req);
}
}
break;
@ -1885,11 +1889,11 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
}
/**
* zfcp_fsf_open_unit - open unit
* zfcp_fsf_open_lun - open LUN
* @erp_action: pointer to struct zfcp_erp_action
* Returns: 0 on success, error otherwise
*/
int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
{
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_qdio *qdio = adapter->qdio;
@ -1913,9 +1917,9 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
req->qtcb->header.port_handle = erp_action->port->handle;
req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
req->handler = zfcp_fsf_open_unit_handler;
req->data = erp_action->unit;
req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
req->handler = zfcp_fsf_open_lun_handler;
req->data = erp_action->sdev;
req->erp_action = erp_action;
erp_action->fsf_req_id = req->req_id;
@ -1933,30 +1937,32 @@ out:
return retval;
}
static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req)
static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
{
struct zfcp_unit *unit = req->data;
struct scsi_device *sdev = req->data;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
return;
switch (req->qtcb->header.fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID:
zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req);
zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1",
req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_LUN_HANDLE_NOT_VALID:
zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req);
zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PORT_BOXED:
zfcp_erp_port_boxed(unit->port, "fscuh_3", req);
zfcp_erp_port_boxed(zfcp_sdev->port, "fscuh_3", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_ADAPTER_STATUS_AVAILABLE:
switch (req->qtcb->header.fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
zfcp_fc_test_link(unit->port);
zfcp_fc_test_link(zfcp_sdev->port);
/* fall through */
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
@ -1964,19 +1970,20 @@ static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req)
}
break;
case FSF_GOOD:
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
break;
}
}
/**
* zfcp_fsf_close_unit - close zfcp unit
* @erp_action: pointer to struct zfcp_unit
* zfcp_fsf_close_LUN - close LUN
* @erp_action: pointer to erp_action triggering the "close LUN"
* Returns: 0 on success, error otherwise
*/
int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
{
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
struct zfcp_fsf_req *req;
int retval = -EIO;
@ -1997,9 +2004,9 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
req->qtcb->header.port_handle = erp_action->port->handle;
req->qtcb->header.lun_handle = erp_action->unit->handle;
req->handler = zfcp_fsf_close_unit_handler;
req->data = erp_action->unit;
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
req->handler = zfcp_fsf_close_lun_handler;
req->data = erp_action->sdev;
req->erp_action = erp_action;
erp_action->fsf_req_id = req->req_id;
@ -2025,7 +2032,7 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
{
struct fsf_qual_latency_info *lat_in;
struct latency_cont *lat = NULL;
struct zfcp_unit *unit = req->unit;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scsi->device);
struct zfcp_blk_drv_data blktrc;
int ticks = req->adapter->timer_ticks;
@ -2048,24 +2055,24 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
case FSF_DATADIR_DIF_READ_STRIP:
case FSF_DATADIR_DIF_READ_CONVERT:
case FSF_DATADIR_READ:
lat = &unit->latencies.read;
lat = &zfcp_sdev->latencies.read;
break;
case FSF_DATADIR_DIF_WRITE_INSERT:
case FSF_DATADIR_DIF_WRITE_CONVERT:
case FSF_DATADIR_WRITE:
lat = &unit->latencies.write;
lat = &zfcp_sdev->latencies.write;
break;
case FSF_DATADIR_CMND:
lat = &unit->latencies.cmd;
lat = &zfcp_sdev->latencies.cmd;
break;
}
if (lat) {
spin_lock(&unit->latencies.lock);
spin_lock(&zfcp_sdev->latencies.lock);
zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
lat->counter++;
spin_unlock(&unit->latencies.lock);
spin_unlock(&zfcp_sdev->latencies.lock);
}
}
@ -2141,68 +2148,66 @@ static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req)
static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req)
{
struct zfcp_unit *unit;
struct scsi_cmnd *scmnd = req->data;
struct scsi_device *sdev = scmnd->device;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct fsf_qtcb_header *header = &req->qtcb->header;
if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
unit = req->data;
else
unit = req->unit;
if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
goto skip_fsfstatus;
switch (header->fsf_status) {
case FSF_HANDLE_MISMATCH:
case FSF_PORT_HANDLE_NOT_VALID:
zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req);
zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1",
req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_FCPLUN_NOT_VALID:
case FSF_LUN_HANDLE_NOT_VALID:
zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req);
zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
zfcp_fsf_class_not_supp(req);
break;
case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_unit(req, unit);
zfcp_fsf_access_denied_lun(req, sdev);
break;
case FSF_DIRECTION_INDICATOR_NOT_VALID:
dev_err(&req->adapter->ccw_device->dev,
"Incorrect direction %d, unit 0x%016Lx on port "
"Incorrect direction %d, LUN 0x%016Lx on port "
"0x%016Lx closed\n",
req->qtcb->bottom.io.data_direction,
(unsigned long long)unit->fcp_lun,
(unsigned long long)unit->port->wwpn);
zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3",
req);
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
"fssfch3", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_CMND_LENGTH_NOT_VALID:
dev_err(&req->adapter->ccw_device->dev,
"Incorrect CDB length %d, unit 0x%016Lx on "
"Incorrect CDB length %d, LUN 0x%016Lx on "
"port 0x%016Lx closed\n",
req->qtcb->bottom.io.fcp_cmnd_length,
(unsigned long long)unit->fcp_lun,
(unsigned long long)unit->port->wwpn);
zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4",
req);
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
"fssfch4", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PORT_BOXED:
zfcp_erp_port_boxed(unit->port, "fssfch5", req);
zfcp_erp_port_boxed(zfcp_sdev->port, "fssfch5", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_LUN_BOXED:
zfcp_erp_unit_boxed(unit, "fssfch6", req);
zfcp_erp_lun_boxed(sdev, "fssfch6", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_ADAPTER_STATUS_AVAILABLE:
if (header->fsf_status_qual.word[0] ==
FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
zfcp_fc_test_link(unit->port);
zfcp_fc_test_link(zfcp_sdev->port);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
@ -2211,8 +2216,6 @@ skip_fsfstatus:
zfcp_fsf_send_fcp_ctm_handler(req);
else {
zfcp_fsf_send_fcp_command_task_handler(req);
req->unit = NULL;
put_device(&unit->dev);
}
}
@ -2255,22 +2258,22 @@ static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
}
/**
* zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
* @unit: unit where command is sent to
* zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
* @scsi_cmnd: scsi command to be sent
*/
int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
struct scsi_cmnd *scsi_cmnd)
int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
{
struct zfcp_fsf_req *req;
struct fcp_cmnd *fcp_cmnd;
unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
int real_bytes, retval = -EIO, dix_bytes = 0;
struct zfcp_adapter *adapter = unit->port->adapter;
struct scsi_device *sdev = scsi_cmnd->device;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
struct zfcp_qdio *qdio = adapter->qdio;
struct fsf_qtcb_bottom_io *io;
if (unlikely(!(atomic_read(&unit->status) &
if (unlikely(!(atomic_read(&zfcp_sdev->status) &
ZFCP_STATUS_COMMON_UNBLOCKED)))
return -EBUSY;
@ -2295,11 +2298,10 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
io = &req->qtcb->bottom.io;
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
req->unit = unit;
req->data = scsi_cmnd;
req->handler = zfcp_fsf_send_fcp_command_handler;
req->qtcb->header.lun_handle = unit->handle;
req->qtcb->header.port_handle = unit->port->handle;
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
req->qtcb->header.port_handle = zfcp_sdev->port->handle;
io->service_class = FSF_CLASS_3;
io->fcp_cmnd_length = FCP_CMND_LEN;
@ -2310,8 +2312,6 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction);
get_device(&unit->dev);
fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
@ -2338,7 +2338,6 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
goto out;
failed_scsi_cmnd:
put_device(&unit->dev);
zfcp_fsf_req_free(req);
scsi_cmnd->host_scribble = NULL;
out:
@ -2347,18 +2346,20 @@ out:
}
/**
* zfcp_fsf_send_fcp_ctm - send SCSI task management command
* @unit: pointer to struct zfcp_unit
* zfcp_fsf_fcp_task_mgmt - send SCSI task management command
* @scmnd: SCSI command to send the task management command for
* @tm_flags: unsigned byte for task management flags
* Returns: on success pointer to struct fsf_req, NULL otherwise
*/
struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
u8 tm_flags)
{
struct zfcp_fsf_req *req = NULL;
struct fcp_cmnd *fcp_cmnd;
struct zfcp_qdio *qdio = unit->port->adapter->qdio;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
if (unlikely(!(atomic_read(&unit->status) &
if (unlikely(!(atomic_read(&zfcp_sdev->status) &
ZFCP_STATUS_COMMON_UNBLOCKED)))
return NULL;
@ -2376,10 +2377,10 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
}
req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
req->data = unit;
req->data = scmnd;
req->handler = zfcp_fsf_send_fcp_command_handler;
req->qtcb->header.lun_handle = unit->handle;
req->qtcb->header.port_handle = unit->port->handle;
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
req->qtcb->header.port_handle = zfcp_sdev->port->handle;
req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
req->qtcb->bottom.io.service_class = FSF_CLASS_3;
req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
@ -2387,7 +2388,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
zfcp_fc_fcp_tm(fcp_cmnd, unit->device, tm_flags);
zfcp_fc_fcp_tm(fcp_cmnd, scmnd->device, tm_flags);
zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
if (!zfcp_fsf_req_send(req))

116
drivers/s390/scsi/zfcp_scsi.c
Просмотреть файл

@ -49,11 +49,12 @@ static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth,
return sdev->queue_depth;
}
static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
static void zfcp_scsi_slave_destroy(struct scsi_device *sdev)
{
struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
unit->device = NULL;
put_device(&unit->dev);
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
zfcp_erp_lun_shutdown_wait(sdev, "scssd_1");
put_device(&zfcp_sdev->port->dev);
}
static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
@ -78,23 +79,16 @@ static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
void (*done) (struct scsi_cmnd *))
{
struct zfcp_unit *unit;
struct zfcp_adapter *adapter;
int status, scsi_result, ret;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
int status, scsi_result, ret;
/* reset the status for this request */
scpnt->result = 0;
scpnt->host_scribble = NULL;
scpnt->scsi_done = done;
/*
* figure out adapter and target device
* (stored there by zfcp_scsi_slave_alloc)
*/
adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
unit = scpnt->device->hostdata;
scsi_result = fc_remote_port_chkready(rport);
if (unlikely(scsi_result)) {
scpnt->result = scsi_result;
@ -103,11 +97,11 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
return 0;
}
status = atomic_read(&unit->status);
status = atomic_read(&zfcp_sdev->status);
if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
!(atomic_read(&unit->port->status) &
!(atomic_read(&zfcp_sdev->port->status) &
ZFCP_STATUS_COMMON_ERP_FAILED)) {
/* only unit access denied, but port is good
/* only LUN access denied, but port is good
* not covered by FC transport, have to fail here */
zfcp_scsi_command_fail(scpnt, DID_ERROR);
return 0;
@ -115,8 +109,8 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
/* This could be either
* open unit pending: this is temporary, will result in
* open unit or ERP_FAILED, so retry command
* open LUN pending: this is temporary, will result in
* open LUN or ERP_FAILED, so retry command
* call to rport_delete pending: mimic retry from
* fc_remote_port_chkready until rport is BLOCKED
*/
@ -124,7 +118,7 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
return 0;
}
ret = zfcp_fsf_send_fcp_command_task(unit, scpnt);
ret = zfcp_fsf_fcp_cmnd(scpnt);
if (unlikely(ret == -EBUSY))
return SCSI_MLQUEUE_DEVICE_BUSY;
else if (unlikely(ret < 0))
@ -133,45 +127,42 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
return ret;
}
static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter,
unsigned int id, u64 lun)
static int zfcp_scsi_slave_alloc(struct scsi_device *sdev)
{
unsigned long flags;
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
struct zfcp_adapter *adapter =
(struct zfcp_adapter *) sdev->host->hostdata[0];
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_port *port;
struct zfcp_unit *unit = NULL;
read_lock_irqsave(&adapter->port_list_lock, flags);
list_for_each_entry(port, &adapter->port_list, list) {
if (!port->rport || (id != port->rport->scsi_target_id))
continue;
unit = zfcp_unit_find(port, lun);
if (unit)
break;
}
read_unlock_irqrestore(&adapter->port_list_lock, flags);
return unit;
}
static int zfcp_scsi_slave_alloc(struct scsi_device *sdp)
{
struct zfcp_adapter *adapter;
struct zfcp_unit *unit;
u64 lun;
adapter = (struct zfcp_adapter *) sdp->host->hostdata[0];
if (!adapter)
goto out;
port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
if (!port)
return -ENXIO;
int_to_scsilun(sdp->lun, (struct scsi_lun *)&lun);
unit = zfcp_unit_lookup(adapter, sdp->id, lun);
if (unit) {
sdp->hostdata = unit;
unit->device = sdp;
return 0;
unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev));
if (unit)
put_device(&unit->dev);
else {
put_device(&port->dev);
return -ENXIO;
}
out:
return -ENXIO;
zfcp_sdev->port = port;
zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF;
zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF;
zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF;
zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF;
zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF;
zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF;
spin_lock_init(&zfcp_sdev->latencies.lock);
zfcp_erp_modify_lun_status(sdev, "scsla_0", NULL,
ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
zfcp_erp_lun_reopen(sdev, 0, "scsla_1", NULL);
zfcp_erp_wait(port->adapter);
return 0;
}
static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
@ -179,7 +170,6 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
struct Scsi_Host *scsi_host = scpnt->device->host;
struct zfcp_adapter *adapter =
(struct zfcp_adapter *) scsi_host->hostdata[0];
struct zfcp_unit *unit = scpnt->device->hostdata;
struct zfcp_fsf_req *old_req, *abrt_req;
unsigned long flags;
unsigned long old_reqid = (unsigned long) scpnt->host_scribble;
@ -203,7 +193,7 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
write_unlock_irqrestore(&adapter->abort_lock, flags);
while (retry--) {
abrt_req = zfcp_fsf_abort_fcp_command(old_reqid, unit);
abrt_req = zfcp_fsf_abort_fcp_cmnd(scpnt);
if (abrt_req)
break;
@ -238,14 +228,14 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
{
struct zfcp_unit *unit = scpnt->device->hostdata;
struct zfcp_adapter *adapter = unit->port->adapter;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
struct zfcp_fsf_req *fsf_req = NULL;
int retval = SUCCESS, ret;
int retry = 3;
while (retry--) {
fsf_req = zfcp_fsf_send_fcp_ctm(unit, tm_flags);
fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags);
if (fsf_req)
break;
@ -256,7 +246,7 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
zfcp_dbf_scsi_devreset("nres", tm_flags, unit, scpnt);
zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags);
return SUCCESS;
}
}
@ -266,10 +256,10 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
wait_for_completion(&fsf_req->completion);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
zfcp_dbf_scsi_devreset("fail", tm_flags, unit, scpnt);
zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags);
retval = FAILED;
} else
zfcp_dbf_scsi_devreset("okay", tm_flags, unit, scpnt);
zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags);
zfcp_fsf_req_free(fsf_req);
return retval;
@ -287,8 +277,8 @@ static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
struct zfcp_unit *unit = scpnt->device->hostdata;
struct zfcp_adapter *adapter = unit->port->adapter;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
int ret;
zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt);

64
drivers/s390/scsi/zfcp_sysfs.c
Просмотреть файл

@ -68,19 +68,19 @@ ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
atomic_read(&unit->status));
zfcp_unit_sdev_status(unit));
ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
(atomic_read(&unit->status) &
(zfcp_unit_sdev_status(unit) &
ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
(atomic_read(&unit->status) &
(zfcp_unit_sdev_status(unit) &
ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
(atomic_read(&unit->status) &
ZFCP_STATUS_UNIT_SHARED) != 0);
(zfcp_unit_sdev_status(unit) &
ZFCP_STATUS_LUN_SHARED) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
(atomic_read(&unit->status) &
ZFCP_STATUS_UNIT_READONLY) != 0);
(zfcp_unit_sdev_status(unit) &
ZFCP_STATUS_LUN_READONLY) != 0);
static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
struct device_attribute *attr,
@ -121,11 +121,17 @@ static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
char *buf)
{
struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
struct scsi_device *sdev;
unsigned int status, failed = 1;
if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
return sprintf(buf, "1\n");
sdev = zfcp_unit_sdev(unit);
if (sdev) {
status = atomic_read(&sdev_to_zfcp(sdev)->status);
failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
scsi_device_put(sdev);
}
return sprintf(buf, "0\n");
return sprintf(buf, "%d\n", failed);
}
static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
@ -134,15 +140,21 @@ static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
{
struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
unsigned long val;
struct scsi_device *sdev;
if (strict_strtoul(buf, 0, &val) || val != 0)
return -EINVAL;
zfcp_erp_modify_unit_status(unit, "syufai1", NULL,
ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED,
"syufai2", NULL);
zfcp_erp_wait(unit->port->adapter);
sdev = zfcp_unit_sdev(unit);
if (sdev) {
zfcp_erp_modify_lun_status(sdev, "syufai1", NULL,
ZFCP_STATUS_COMMON_RUNNING,
ZFCP_SET);
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
"syufai2", NULL);
zfcp_erp_wait(unit->port->adapter);
} else
zfcp_unit_scsi_scan(unit);
return count;
}
@ -347,9 +359,9 @@ zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
struct device_attribute *attr, \
char *buf) { \
struct scsi_device *sdev = to_scsi_device(dev); \
struct zfcp_unit *unit = sdev->hostdata; \
struct zfcp_latencies *lat = &unit->latencies; \
struct zfcp_adapter *adapter = unit->port->adapter; \
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
\
spin_lock_bh(&lat->lock); \
@ -378,8 +390,8 @@ zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
const char *buf, size_t count) \
{ \
struct scsi_device *sdev = to_scsi_device(dev); \
struct zfcp_unit *unit = sdev->hostdata; \
struct zfcp_latencies *lat = &unit->latencies; \
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
unsigned long flags; \
\
spin_lock_irqsave(&lat->lock, flags); \
@ -407,26 +419,26 @@ static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
struct device_attribute *attr,\
char *buf) \
{ \
struct scsi_device *sdev = to_scsi_device(dev); \
struct zfcp_unit *unit = sdev->hostdata; \
struct scsi_device *sdev = to_scsi_device(dev); \
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
struct zfcp_port *port = zfcp_sdev->port; \
\
return sprintf(buf, _format, _value); \
} \
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
dev_name(&unit->port->adapter->ccw_device->dev));
dev_name(&port->adapter->ccw_device->dev));
ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
(unsigned long long) unit->port->wwpn);
(unsigned long long) port->wwpn);
static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct zfcp_unit *unit = sdev->hostdata;
return sprintf(buf, "0x%016llx\n", (unsigned long long) unit->fcp_lun);
return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
}
static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);

11
drivers/s390/scsi/zfcp_unit.c
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@ -134,14 +134,7 @@ int zfcp_unit_add(struct zfcp_port *port, u64 fcp_lun)
unit->fcp_lun = fcp_lun;
unit->dev.parent = &port->dev;
unit->dev.release = zfcp_unit_release;
unit->latencies.write.channel.min = 0xFFFFFFFF;
unit->latencies.write.fabric.min = 0xFFFFFFFF;
unit->latencies.read.channel.min = 0xFFFFFFFF;
unit->latencies.read.fabric.min = 0xFFFFFFFF;
unit->latencies.cmd.channel.min = 0xFFFFFFFF;
unit->latencies.cmd.fabric.min = 0xFFFFFFFF;
INIT_WORK(&unit->scsi_work, zfcp_unit_scsi_scan_work);
spin_lock_init(&unit->latencies.lock);
if (dev_set_name(&unit->dev, "0x%016llx",
(unsigned long long) fcp_lun)) {
@ -165,9 +158,6 @@ int zfcp_unit_add(struct zfcp_port *port, u64 fcp_lun)
list_add_tail(&unit->list, &port->unit_list);
write_unlock_irq(&port->unit_list_lock);
atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING, &unit->status);
zfcp_erp_unit_reopen(unit, 0, "syuas_1", NULL);
zfcp_erp_wait(unit->port->adapter);
zfcp_unit_scsi_scan(unit);
return 0;
@ -248,7 +238,6 @@ int zfcp_unit_remove(struct zfcp_port *port, u64 fcp_lun)
put_device(&unit->dev);
zfcp_erp_unit_shutdown(unit, 0, "unrem_1", NULL);
zfcp_device_unregister(&unit->dev, &zfcp_sysfs_unit_attrs);
return 0;