summaryrefslogtreecommitdiffstats
path: root/drivers/s390/scsi
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390/scsi')
-rw-r--r--drivers/s390/scsi/zfcp_aux.c90
-rw-r--r--drivers/s390/scsi/zfcp_ccw.c11
-rw-r--r--drivers/s390/scsi/zfcp_dbf.c20
-rw-r--r--drivers/s390/scsi/zfcp_dbf.h34
-rw-r--r--drivers/s390/scsi/zfcp_def.h114
-rw-r--r--drivers/s390/scsi/zfcp_erp.c36
-rw-r--r--drivers/s390/scsi/zfcp_ext.h9
-rw-r--r--drivers/s390/scsi/zfcp_fc.c23
-rw-r--r--drivers/s390/scsi/zfcp_fsf.c163
-rw-r--r--drivers/s390/scsi/zfcp_qdio.c50
-rw-r--r--drivers/s390/scsi/zfcp_qdio.h109
-rw-r--r--drivers/s390/scsi/zfcp_reqlist.h183
-rw-r--r--drivers/s390/scsi/zfcp_scsi.c38
-rw-r--r--drivers/s390/scsi/zfcp_sysfs.c37
14 files changed, 513 insertions, 404 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 9d0c941b7d3..66d6c01fcf3 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -3,7 +3,7 @@
*
* Module interface and handling of zfcp data structures.
*
- * Copyright IBM Corporation 2002, 2009
+ * Copyright IBM Corporation 2002, 2010
*/
/*
@@ -32,6 +32,7 @@
#include <linux/seq_file.h>
#include "zfcp_ext.h"
#include "zfcp_fc.h"
+#include "zfcp_reqlist.h"
#define ZFCP_BUS_ID_SIZE 20
@@ -49,36 +50,6 @@ static struct kmem_cache *zfcp_cache_hw_align(const char *name,
return kmem_cache_create(name, size, roundup_pow_of_two(size), 0, NULL);
}
-static int zfcp_reqlist_alloc(struct zfcp_adapter *adapter)
-{
- int idx;
-
- adapter->req_list = kcalloc(REQUEST_LIST_SIZE, sizeof(struct list_head),
- GFP_KERNEL);
- if (!adapter->req_list)
- return -ENOMEM;
-
- for (idx = 0; idx < REQUEST_LIST_SIZE; idx++)
- INIT_LIST_HEAD(&adapter->req_list[idx]);
- return 0;
-}
-
-/**
- * zfcp_reqlist_isempty - is the request list empty
- * @adapter: pointer to struct zfcp_adapter
- *
- * Returns: true if list is empty, false otherwise
- */
-int zfcp_reqlist_isempty(struct zfcp_adapter *adapter)
-{
- unsigned int idx;
-
- for (idx = 0; idx < REQUEST_LIST_SIZE; idx++)
- if (!list_empty(&adapter->req_list[idx]))
- return 0;
- return 1;
-}
-
static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
{
struct ccw_device *cdev;
@@ -110,7 +81,7 @@ static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
flush_work(&unit->scsi_work);
out_unit:
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
out_port:
zfcp_ccw_adapter_put(adapter);
out_ccw_device:
@@ -255,7 +226,7 @@ struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *port, u64 fcp_lun)
read_lock_irqsave(&port->unit_list_lock, flags);
list_for_each_entry(unit, &port->unit_list, list)
if (unit->fcp_lun == fcp_lun) {
- if (!get_device(&unit->sysfs_device))
+ if (!get_device(&unit->dev))
unit = NULL;
read_unlock_irqrestore(&port->unit_list_lock, flags);
return unit;
@@ -280,7 +251,7 @@ struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *adapter,
read_lock_irqsave(&adapter->port_list_lock, flags);
list_for_each_entry(port, &adapter->port_list, list)
if (port->wwpn == wwpn) {
- if (!get_device(&port->sysfs_device))
+ if (!get_device(&port->dev))
port = NULL;
read_unlock_irqrestore(&adapter->port_list_lock, flags);
return port;
@@ -298,10 +269,9 @@ struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *adapter,
*/
static void zfcp_unit_release(struct device *dev)
{
- struct zfcp_unit *unit = container_of(dev, struct zfcp_unit,
- sysfs_device);
+ struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
- put_device(&unit->port->sysfs_device);
+ put_device(&unit->port->dev);
kfree(unit);
}
@@ -318,11 +288,11 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun)
struct zfcp_unit *unit;
int retval = -ENOMEM;
- get_device(&port->sysfs_device);
+ get_device(&port->dev);
unit = zfcp_get_unit_by_lun(port, fcp_lun);
if (unit) {
- put_device(&unit->sysfs_device);
+ put_device(&unit->dev);
retval = -EEXIST;
goto err_out;
}
@@ -333,10 +303,10 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun)
unit->port = port;
unit->fcp_lun = fcp_lun;
- unit->sysfs_device.parent = &port->sysfs_device;
- unit->sysfs_device.release = zfcp_unit_release;
+ unit->dev.parent = &port->dev;
+ unit->dev.release = zfcp_unit_release;
- if (dev_set_name(&unit->sysfs_device, "0x%016llx",
+ if (dev_set_name(&unit->dev, "0x%016llx",
(unsigned long long) fcp_lun)) {
kfree(unit);
goto err_out;
@@ -353,13 +323,12 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun)
unit->latencies.cmd.channel.min = 0xFFFFFFFF;
unit->latencies.cmd.fabric.min = 0xFFFFFFFF;
- if (device_register(&unit->sysfs_device)) {
- put_device(&unit->sysfs_device);
+ if (device_register(&unit->dev)) {
+ put_device(&unit->dev);
goto err_out;
}
- if (sysfs_create_group(&unit->sysfs_device.kobj,
- &zfcp_sysfs_unit_attrs))
+ if (sysfs_create_group(&unit->dev.kobj, &zfcp_sysfs_unit_attrs))
goto err_out_put;
write_lock_irq(&port->unit_list_lock);
@@ -371,9 +340,9 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun)
return unit;
err_out_put:
- device_unregister(&unit->sysfs_device);
+ device_unregister(&unit->dev);
err_out:
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
return ERR_PTR(retval);
}
@@ -539,7 +508,8 @@ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device)
if (zfcp_allocate_low_mem_buffers(adapter))
goto failed;
- if (zfcp_reqlist_alloc(adapter))
+ adapter->req_list = zfcp_reqlist_alloc();
+ if (!adapter->req_list)
goto failed;
if (zfcp_dbf_adapter_register(adapter))
@@ -560,8 +530,6 @@ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device)
INIT_LIST_HEAD(&adapter->erp_ready_head);
INIT_LIST_HEAD(&adapter->erp_running_head);
- spin_lock_init(&adapter->req_list_lock);
-
rwlock_init(&adapter->erp_lock);
rwlock_init(&adapter->abort_lock);
@@ -640,8 +608,7 @@ void zfcp_device_unregister(struct device *dev,
static void zfcp_port_release(struct device *dev)
{
- struct zfcp_port *port = container_of(dev, struct zfcp_port,
- sysfs_device);
+ struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
zfcp_ccw_adapter_put(port->adapter);
kfree(port);
@@ -669,7 +636,7 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn,
port = zfcp_get_port_by_wwpn(adapter, wwpn);
if (port) {
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
retval = -EEXIST;
goto err_out;
}
@@ -689,22 +656,21 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn,
port->d_id = d_id;
port->wwpn = wwpn;
port->rport_task = RPORT_NONE;
- port->sysfs_device.parent = &adapter->ccw_device->dev;
- port->sysfs_device.release = zfcp_port_release;
+ port->dev.parent = &adapter->ccw_device->dev;
+ port->dev.release = zfcp_port_release;
- if (dev_set_name(&port->sysfs_device, "0x%016llx",
- (unsigned long long)wwpn)) {
+ if (dev_set_name(&port->dev, "0x%016llx", (unsigned long long)wwpn)) {
kfree(port);
goto err_out;
}
retval = -EINVAL;
- if (device_register(&port->sysfs_device)) {
- put_device(&port->sysfs_device);
+ if (device_register(&port->dev)) {
+ put_device(&port->dev);
goto err_out;
}
- if (sysfs_create_group(&port->sysfs_device.kobj,
+ if (sysfs_create_group(&port->dev.kobj,
&zfcp_sysfs_port_attrs))
goto err_out_put;
@@ -717,7 +683,7 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn,
return port;
err_out_put:
- device_unregister(&port->sysfs_device);
+ device_unregister(&port->dev);
err_out:
zfcp_ccw_adapter_put(adapter);
return ERR_PTR(retval);
diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index c22cb72a5ae..ce1cc7a11fb 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -3,13 +3,14 @@
*
* Registration and callback for the s390 common I/O layer.
*
- * Copyright IBM Corporation 2002, 2009
+ * Copyright IBM Corporation 2002, 2010
*/
#define KMSG_COMPONENT "zfcp"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include "zfcp_ext.h"
+#include "zfcp_reqlist.h"
#define ZFCP_MODEL_PRIV 0x4
@@ -122,12 +123,10 @@ static void zfcp_ccw_remove(struct ccw_device *cdev)
zfcp_ccw_adapter_put(adapter); /* put from zfcp_ccw_adapter_by_cdev */
list_for_each_entry_safe(unit, u, &unit_remove_lh, list)
- zfcp_device_unregister(&unit->sysfs_device,
- &zfcp_sysfs_unit_attrs);
+ zfcp_device_unregister(&unit->dev, &zfcp_sysfs_unit_attrs);
list_for_each_entry_safe(port, p, &port_remove_lh, list)
- zfcp_device_unregister(&port->sysfs_device,
- &zfcp_sysfs_port_attrs);
+ zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
zfcp_adapter_unregister(adapter);
}
@@ -162,7 +161,7 @@ static int zfcp_ccw_set_online(struct ccw_device *cdev)
}
/* initialize request counter */
- BUG_ON(!zfcp_reqlist_isempty(adapter));
+ BUG_ON(!zfcp_reqlist_isempty(adapter->req_list));
adapter->req_no = 0;
zfcp_erp_modify_adapter_status(adapter, "ccsonl1", NULL,
diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index 7369c8911bc..7a149fd85f6 100644
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -140,9 +140,9 @@ void _zfcp_dbf_hba_fsf_response(const char *tag2, int level,
memcpy(response->fsf_status_qual,
fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
response->fsf_req_status = fsf_req->status;
- response->sbal_first = fsf_req->queue_req.sbal_first;
- response->sbal_last = fsf_req->queue_req.sbal_last;
- response->sbal_response = fsf_req->queue_req.sbal_response;
+ response->sbal_first = fsf_req->qdio_req.sbal_first;
+ response->sbal_last = fsf_req->qdio_req.sbal_last;
+ response->sbal_response = fsf_req->qdio_req.sbal_response;
response->pool = fsf_req->pool != NULL;
response->erp_action = (unsigned long)fsf_req->erp_action;
@@ -576,7 +576,8 @@ void zfcp_dbf_rec_adapter(char *id, void *ref, struct zfcp_dbf *dbf)
struct zfcp_adapter *adapter = dbf->adapter;
zfcp_dbf_rec_target(id, ref, dbf, &adapter->status,
- &adapter->erp_counter, 0, 0, 0);
+ &adapter->erp_counter, 0, 0,
+ ZFCP_DBF_INVALID_LUN);
}
/**
@@ -590,8 +591,8 @@ void zfcp_dbf_rec_port(char *id, void *ref, struct zfcp_port *port)
struct zfcp_dbf *dbf = port->adapter->dbf;
zfcp_dbf_rec_target(id, ref, dbf, &port->status,
- &port->erp_counter, port->wwpn, port->d_id,
- 0);
+ &port->erp_counter, port->wwpn, port->d_id,
+ ZFCP_DBF_INVALID_LUN);
}
/**
@@ -642,10 +643,9 @@ 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) {
+ if (unit)
r->u.trigger.us = atomic_read(&unit->status);
- r->u.trigger.fcp_lun = unit->fcp_lun;
- }
+ r->u.trigger.fcp_lun = unit ? unit->fcp_lun : ZFCP_DBF_INVALID_LUN;
debug_event(dbf->rec, action ? 1 : 4, r, sizeof(*r));
spin_unlock_irqrestore(&dbf->rec_lock, flags);
}
@@ -668,7 +668,7 @@ void zfcp_dbf_rec_action(char *id2, struct zfcp_erp_action *erp_action)
r->u.action.action = (unsigned long)erp_action;
r->u.action.status = erp_action->status;
r->u.action.step = erp_action->step;
- r->u.action.fsf_req = (unsigned long)erp_action->fsf_req;
+ r->u.action.fsf_req = erp_action->fsf_req_id;
debug_event(dbf->rec, 5, r, sizeof(*r));
spin_unlock_irqrestore(&dbf->rec_lock, flags);
}
diff --git a/drivers/s390/scsi/zfcp_dbf.h b/drivers/s390/scsi/zfcp_dbf.h
index 8b7fd9a1033..457e046f2d2 100644
--- a/drivers/s390/scsi/zfcp_dbf.h
+++ b/drivers/s390/scsi/zfcp_dbf.h
@@ -30,6 +30,8 @@
#define ZFCP_DBF_TAG_SIZE 4
#define ZFCP_DBF_ID_SIZE 7
+#define ZFCP_DBF_INVALID_LUN 0xFFFFFFFFFFFFFFFFull
+
struct zfcp_dbf_dump {
u8 tag[ZFCP_DBF_TAG_SIZE];
u32 total_size; /* size of total dump data */
@@ -192,10 +194,10 @@ struct zfcp_dbf_san_record {
struct zfcp_dbf_san_record_ct_response ct_resp;
struct zfcp_dbf_san_record_els els;
} u;
-#define ZFCP_DBF_SAN_MAX_PAYLOAD 1024
- u8 payload[32];
} __attribute__ ((packed));
+#define ZFCP_DBF_SAN_MAX_PAYLOAD 1024
+
struct zfcp_dbf_scsi_record {
u8 tag[ZFCP_DBF_TAG_SIZE];
u8 tag2[ZFCP_DBF_TAG_SIZE];
@@ -301,17 +303,31 @@ void zfcp_dbf_scsi(const char *tag, const char *tag2, int level,
/**
* zfcp_dbf_scsi_result - trace event for SCSI command completion
- * @tag: tag indicating success or failure of SCSI command
- * @level: trace level applicable for this event
- * @adapter: adapter that has been used to issue the SCSI command
+ * @dbf: adapter dbf trace
+ * @scmd: SCSI command pointer
+ * @req: FSF request used to issue SCSI command
+ */
+static inline
+void zfcp_dbf_scsi_result(struct zfcp_dbf *dbf, struct scsi_cmnd *scmd,
+ struct zfcp_fsf_req *req)
+{
+ if (scmd->result != 0)
+ zfcp_dbf_scsi("rslt", "erro", 3, dbf, scmd, req, 0);
+ else if (scmd->retries > 0)
+ zfcp_dbf_scsi("rslt", "retr", 4, dbf, scmd, req, 0);
+ else
+ zfcp_dbf_scsi("rslt", "norm", 6, dbf, scmd, req, 0);
+}
+
+/**
+ * zfcp_dbf_scsi_fail_send - trace event for failure to send SCSI command
+ * @dbf: adapter dbf trace
* @scmd: SCSI command pointer
- * @fsf_req: request used to issue SCSI command (might be NULL)
*/
static inline
-void zfcp_dbf_scsi_result(const char *tag, int level, struct zfcp_dbf *dbf,
- struct scsi_cmnd *scmd, struct zfcp_fsf_req *fsf_req)
+void zfcp_dbf_scsi_fail_send(struct zfcp_dbf *dbf, struct scsi_cmnd *scmd)
{
- zfcp_dbf_scsi("rslt", tag, level, dbf, scmd, fsf_req, 0);
+ zfcp_dbf_scsi("rslt", "fail", 4, dbf, scmd, NULL, 0);
}
/**
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index e1b5b88e2dd..7131c7db1f0 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -3,7 +3,7 @@
*
* Global definitions for the zfcp device driver.
*
- * Copyright IBM Corporation 2002, 2009
+ * Copyright IBM Corporation 2002, 2010
*/
#ifndef ZFCP_DEF_H
@@ -33,15 +33,13 @@
#include <scsi/scsi_transport_fc.h>
#include <scsi/scsi_bsg_fc.h>
#include <asm/ccwdev.h>
-#include <asm/qdio.h>
#include <asm/debug.h>
#include <asm/ebcdic.h>
#include <asm/sysinfo.h>
#include "zfcp_fsf.h"
+#include "zfcp_qdio.h"
-/********************* GENERAL DEFINES *********************************/
-
-#define REQUEST_LIST_SIZE 128
+struct zfcp_reqlist;
/********************* SCSI SPECIFIC DEFINES *********************************/
#define ZFCP_SCSI_ER_TIMEOUT (10*HZ)
@@ -129,12 +127,6 @@ struct zfcp_adapter_mempool {
mempool_t *qtcb_pool;
};
-struct zfcp_qdio_queue {
- struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q];
- u8 first; /* index of next free bfr in queue */
- atomic_t count; /* number of free buffers in queue */
-};
-
struct zfcp_erp_action {
struct list_head list;
int action; /* requested action code */
@@ -143,8 +135,7 @@ struct zfcp_erp_action {
struct zfcp_unit *unit;
u32 status; /* recovery status */
u32 step; /* active step of this erp action */
- struct zfcp_fsf_req *fsf_req; /* fsf request currently pending
- for this action */
+ unsigned long fsf_req_id;
struct timer_list timer;
};
@@ -167,29 +158,6 @@ struct zfcp_latencies {
spinlock_t lock;
};
-/** struct zfcp_qdio - basic QDIO data structure
- * @resp_q: response queue
- * @req_q: request queue
- * @stat_lock: lock to protect req_q_util and req_q_time
- * @req_q_lock; lock to serialize access to request queue
- * @req_q_time: time of last fill level change
- * @req_q_util: used for accounting
- * @req_q_full: queue full incidents
- * @req_q_wq: used to wait for SBAL availability
- * @adapter: adapter used in conjunction with this QDIO structure
- */
-struct zfcp_qdio {
- struct zfcp_qdio_queue resp_q;
- struct zfcp_qdio_queue req_q;
- spinlock_t stat_lock;
- spinlock_t req_q_lock;
- unsigned long long req_q_time;
- u64 req_q_util;
- atomic_t req_q_full;
- wait_queue_head_t req_q_wq;
- struct zfcp_adapter *adapter;
-};
-
struct zfcp_adapter {
struct kref ref;
u64 peer_wwnn; /* P2P peer WWNN */
@@ -207,8 +175,7 @@ struct zfcp_adapter {
struct list_head port_list; /* remote port list */
rwlock_t port_list_lock; /* port list lock */
unsigned long req_no; /* unique FSF req number */
- struct list_head *req_list; /* list of pending reqs */
- spinlock_t req_list_lock; /* request list lock */
+ struct zfcp_reqlist *req_list;
u32 fsf_req_seq_no; /* FSF cmnd seq number */
rwlock_t abort_lock; /* Protects against SCSI
stack abort/command
@@ -241,7 +208,7 @@ struct zfcp_adapter {
};
struct zfcp_port {
- struct device sysfs_device; /* sysfs device */
+ struct device dev;
struct fc_rport *rport; /* rport of fc transport class */
struct list_head list; /* list of remote ports */
struct zfcp_adapter *adapter; /* adapter used to access port */
@@ -263,7 +230,7 @@ struct zfcp_port {
};
struct zfcp_unit {
- struct device sysfs_device; /* sysfs device */
+ 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 */
@@ -277,33 +244,11 @@ struct zfcp_unit {
};
/**
- * struct zfcp_queue_req - queue related values for a request
- * @sbal_number: number of free SBALs
- * @sbal_first: first SBAL for this request
- * @sbal_last: last SBAL for this request
- * @sbal_limit: last possible SBAL for this request
- * @sbale_curr: current SBALE at creation of this request
- * @sbal_response: SBAL used in interrupt
- * @qdio_outb_usage: usage of outbound queue
- * @qdio_inb_usage: usage of inbound queue
- */
-struct zfcp_queue_req {
- u8 sbal_number;
- u8 sbal_first;
- u8 sbal_last;
- u8 sbal_limit;
- u8 sbale_curr;
- u8 sbal_response;
- u16 qdio_outb_usage;
- u16 qdio_inb_usage;
-};
-
-/**
* struct zfcp_fsf_req - basic FSF request structure
* @list: list of FSF requests
* @req_id: unique request ID
* @adapter: adapter this request belongs to
- * @queue_req: queue related values
+ * @qdio_req: qdio queue related values
* @completion: used to signal the completion of the request
* @status: status of the request
* @fsf_command: FSF command issued
@@ -321,7 +266,7 @@ struct zfcp_fsf_req {
struct list_head list;
unsigned long req_id;
struct zfcp_adapter *adapter;
- struct zfcp_queue_req queue_req;
+ struct zfcp_qdio_req qdio_req;
struct completion completion;
u32 status;
u32 fsf_command;
@@ -352,45 +297,4 @@ struct zfcp_data {
#define ZFCP_SET 0x00000100
#define ZFCP_CLEAR 0x00000200
-/*
- * Helper functions for request ID management.
- */
-static inline int zfcp_reqlist_hash(unsigned long req_id)
-{
- return req_id % REQUEST_LIST_SIZE;
-}
-
-static inline void zfcp_reqlist_remove(struct zfcp_adapter *adapter,
- struct zfcp_fsf_req *fsf_req)
-{
- list_del(&fsf_req->list);
-}
-
-static inline struct zfcp_fsf_req *
-zfcp_reqlist_find(struct zfcp_adapter *adapter, unsigned long req_id)
-{
- struct zfcp_fsf_req *request;
- unsigned int idx;
-
- idx = zfcp_reqlist_hash(req_id);
- list_for_each_entry(request, &adapter->req_list[idx], list)
- if (request->req_id == req_id)
- return request;
- return NULL;
-}
-
-static inline struct zfcp_fsf_req *
-zfcp_reqlist_find_safe(struct zfcp_adapter *adapter, struct zfcp_fsf_req *req)
-{
- struct zfcp_fsf_req *request;
- unsigned int idx;
-
- for (idx = 0; idx < REQUEST_LIST_SIZE; idx++) {
- list_for_each_entry(request, &adapter->req_list[idx], list)
- if (request == req)
- return request;
- }
- return NULL;
-}
-
#endif /* ZFCP_DEF_H */
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index b51a11a82e6..0be5e7ea282 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -3,7 +3,7 @@
*
* Error Recovery Procedures (ERP).
*
- * Copyright IBM Corporation 2002, 2009
+ * Copyright IBM Corporation 2002, 2010
*/
#define KMSG_COMPONENT "zfcp"
@@ -11,6 +11,7 @@
#include <linux/kthread.h>
#include "zfcp_ext.h"
+#include "zfcp_reqlist.h"
#define ZFCP_MAX_ERPS 3
@@ -174,7 +175,7 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need,
switch (need) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
- if (!get_device(&unit->sysfs_device))
+ if (!get_device(&unit->dev))
return NULL;
atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status);
erp_action = &unit->erp_action;
@@ -184,7 +185,7 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need,
case ZFCP_ERP_ACTION_REOPEN_PORT:
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
- if (!get_device(&port->sysfs_device))
+ if (!get_device(&port->dev))
return NULL;
zfcp_erp_action_dismiss_port(port);
atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status);
@@ -478,26 +479,27 @@ static void zfcp_erp_action_to_running(struct zfcp_erp_action *erp_action)
static void zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *act)
{
struct zfcp_adapter *adapter = act->adapter;
+ struct zfcp_fsf_req *req;
- if (!act->fsf_req)
+ if (!act->fsf_req_id)
return;
- spin_lock(&adapter->req_list_lock);
- if (zfcp_reqlist_find_safe(adapter, act->fsf_req) &&
- act->fsf_req->erp_action == act) {
+ spin_lock(&adapter->req_list->lock);
+ req = _zfcp_reqlist_find(adapter->req_list, act->fsf_req_id);
+ if (req && req->erp_action == act) {
if (act->status & (ZFCP_STATUS_ERP_DISMISSED |
ZFCP_STATUS_ERP_TIMEDOUT)) {
- act->fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
+ req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
zfcp_dbf_rec_action("erscf_1", act);
- act->fsf_req->erp_action = NULL;
+ req->erp_action = NULL;
}
if (act->status & ZFCP_STATUS_ERP_TIMEDOUT)
zfcp_dbf_rec_action("erscf_2", act);
- if (act->fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED)
- act->fsf_req = NULL;
+ if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED)
+ act->fsf_req_id = 0;
} else
- act->fsf_req = NULL;
- spin_unlock(&adapter->req_list_lock);
+ act->fsf_req_id = 0;
+ spin_unlock(&adapter->req_list->lock);
}
/**
@@ -1179,19 +1181,19 @@ static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
switch (act->action) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
if ((result == ZFCP_ERP_SUCCEEDED) && !unit->device) {
- get_device(&unit->sysfs_device);
+ get_device(&unit->dev);
if (scsi_queue_work(unit->port->adapter->scsi_host,
&unit->scsi_work) <= 0)
- put_device(&unit->sysfs_device);
+ put_device(&unit->dev);
}
- put_device(&unit->sysfs_device);
+ put_device(&unit->dev);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
case ZFCP_ERP_ACTION_REOPEN_PORT:
if (result == ZFCP_ERP_SUCCEEDED)
zfcp_scsi_schedule_rport_register(port);
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
break;
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index 66bdb34143c..8786a79c7f8 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -21,7 +21,6 @@ extern struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *);
extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, u64, u32,
u32);
extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, u64);
-extern int zfcp_reqlist_isempty(struct zfcp_adapter *);
extern void zfcp_sg_free_table(struct scatterlist *, int);
extern int zfcp_sg_setup_table(struct scatterlist *, int);
extern void zfcp_device_unregister(struct device *,
@@ -144,13 +143,9 @@ extern void zfcp_fsf_reqid_check(struct zfcp_qdio *, int);
/* zfcp_qdio.c */
extern int zfcp_qdio_setup(struct zfcp_adapter *);
extern void zfcp_qdio_destroy(struct zfcp_qdio *);
-extern int zfcp_qdio_send(struct zfcp_qdio *, struct zfcp_queue_req *);
-extern struct qdio_buffer_element
- *zfcp_qdio_sbale_req(struct zfcp_qdio *, struct zfcp_queue_req *);
-extern struct qdio_buffer_element
- *zfcp_qdio_sbale_curr(struct zfcp_qdio *, struct zfcp_queue_req *);
+extern int zfcp_qdio_send(struct zfcp_qdio *, struct zfcp_qdio_req *);
extern int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *,
- struct zfcp_queue_req *, unsigned long,
+ struct zfcp_qdio_req *, unsigned long,
struct scatterlist *, int);
extern int zfcp_qdio_open(struct zfcp_qdio *);
extern void zfcp_qdio_close(struct zfcp_qdio *);
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index 271399f62f1..5219670f0c9 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -3,7 +3,7 @@
*
* Fibre Channel related functions for the zfcp device driver.
*
- * Copyright IBM Corporation 2008, 2009
+ * Copyright IBM Corporation 2008, 2010
*/
#define KMSG_COMPONENT "zfcp"
@@ -316,7 +316,7 @@ void zfcp_fc_port_did_lookup(struct work_struct *work)
zfcp_erp_port_reopen(port, 0, "fcgpn_3", NULL);
out:
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
}
/**
@@ -325,9 +325,9 @@ out:
*/
void zfcp_fc_trigger_did_lookup(struct zfcp_port *port)
{
- get_device(&port->sysfs_device);
+ get_device(&port->dev);
if (!queue_work(port->adapter->work_queue, &port->gid_pn_work))
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
}
/**
@@ -389,7 +389,7 @@ static void zfcp_fc_adisc_handler(void *data)
zfcp_scsi_schedule_rport_register(port);
out:
atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
kmem_cache_free(zfcp_data.adisc_cache, adisc);
}
@@ -436,7 +436,7 @@ void zfcp_fc_link_test_work(struct work_struct *work)
container_of(work, struct zfcp_port, test_link_work);
int retval;
- get_device(&port->sysfs_device);
+ get_device(&port->dev);
port->rport_task = RPORT_DEL;
zfcp_scsi_rport_work(&port->rport_work);
@@ -455,7 +455,7 @@ void zfcp_fc_link_test_work(struct work_struct *work)
zfcp_erp_port_forced_reopen(port, 0, "fcltwk1", NULL);
out:
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
}
/**
@@ -468,9 +468,9 @@ out:
*/
void zfcp_fc_test_link(struct zfcp_port *port)
{
- get_device(&port->sysfs_device);
+ get_device(&port->dev);
if (!queue_work(port->adapter->work_queue, &port->test_link_work))
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
}
static void zfcp_free_sg_env(struct zfcp_fc_gpn_ft *gpn_ft, int buf_num)
@@ -617,8 +617,7 @@ static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_gpn_ft *gpn_ft,
list_for_each_entry_safe(port, tmp, &remove_lh, list) {
zfcp_erp_port_shutdown(port, 0, "fcegpf2", NULL);
- zfcp_device_unregister(&port->sysfs_device,
- &zfcp_sysfs_port_attrs);
+ zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
}
return ret;
@@ -731,7 +730,7 @@ static int zfcp_fc_exec_els_job(struct fc_bsg_job *job,
return -EINVAL;
d_id = port->d_id;
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
} else
d_id = ntoh24(job->request->rqst_data.h_els.port_id);
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index e8fb4d9baa8..6538742b421 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -3,7 +3,7 @@
*
* Implementation of FSF commands.
*
- * Copyright IBM Corporation 2002, 2009
+ * Copyright IBM Corporation 2002, 2010
*/
#define KMSG_COMPONENT "zfcp"
@@ -14,6 +14,8 @@
#include "zfcp_ext.h"
#include "zfcp_fc.h"
#include "zfcp_dbf.h"
+#include "zfcp_qdio.h"
+#include "zfcp_reqlist.h"
static void zfcp_fsf_request_timeout_handler(unsigned long data)
{
@@ -393,7 +395,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
case FSF_PROT_LINK_DOWN:
zfcp_fsf_link_down_info_eval(req, "fspse_5",
&psq->link_down_info);
- /* FIXME: reopening adapter now? better wait for link up */
+ /* go through reopen to flush pending requests */
zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req);
break;
case FSF_PROT_REEST_QUEUE:
@@ -457,15 +459,10 @@ static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
{
struct zfcp_fsf_req *req, *tmp;
- unsigned long flags;
LIST_HEAD(remove_queue);
- unsigned int i;
BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
- spin_lock_irqsave(&adapter->req_list_lock, flags);
- for (i = 0; i < REQUEST_LIST_SIZE; i++)
- list_splice_init(&adapter->req_list[i], &remove_queue);
- spin_unlock_irqrestore(&adapter->req_list_lock, flags);
+ zfcp_reqlist_move(adapter->req_list, &remove_queue);
list_for_each_entry_safe(req, tmp, &remove_queue, list) {
list_del(&req->list);
@@ -495,8 +492,6 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
fc_host_port_id(shost) = ntoh24(bottom->s_id);
fc_host_speed(shost) = bottom->fc_link_speed;
fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
- fc_host_supported_fc4s(shost)[2] = 1; /* FCP */
- fc_host_active_fc4s(shost)[2] = 1; /* FCP */
adapter->hydra_version = bottom->adapter_type;
adapter->timer_ticks = bottom->timer_interval;
@@ -619,6 +614,10 @@ static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
fc_host_supported_speeds(shost) = bottom->supported_speed;
+ memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
+ FC_FC4_LIST_SIZE);
+ memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
+ FC_FC4_LIST_SIZE);
}
static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
@@ -725,12 +724,12 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
req->adapter = adapter;
req->fsf_command = fsf_cmd;
req->req_id = adapter->req_no;
- req->queue_req.sbal_number = 1;
- req->queue_req.sbal_first = req_q->first;
- req->queue_req.sbal_last = req_q->first;
- req->queue_req.sbale_curr = 1;
+ req->qdio_req.sbal_number = 1;
+ req->qdio_req.sbal_first = req_q->first;
+ req->qdio_req.sbal_last = req_q->first;
+ req->qdio_req.sbale_curr = 1;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].addr = (void *) req->req_id;
sbale[0].flags |= SBAL_FLAGS0_COMMAND;
@@ -745,6 +744,7 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
return ERR_PTR(-ENOMEM);
}
+ req->seq_no = adapter->fsf_req_seq_no;
req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
req->qtcb->prefix.req_id = req->req_id;
req->qtcb->prefix.ulp_info = 26;
@@ -752,8 +752,6 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
req->qtcb->header.req_handle = req->req_id;
req->qtcb->header.fsf_command = req->fsf_command;
- req->seq_no = adapter->fsf_req_seq_no;
- req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
sbale[1].addr = (void *) req->qtcb;
sbale[1].length = sizeof(struct fsf_qtcb);
}
@@ -770,25 +768,17 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
{
struct zfcp_adapter *adapter = req->adapter;
struct zfcp_qdio *qdio = adapter->qdio;
- unsigned long flags;
- int idx;
- int with_qtcb = (req->qtcb != NULL);
+ int with_qtcb = (req->qtcb != NULL);
+ int req_id = req->req_id;
- /* put allocated FSF request into hash table */
- spin_lock_irqsave(&adapter->req_list_lock, flags);
- idx = zfcp_reqlist_hash(req->req_id);
- list_add_tail(&req->list, &adapter->req_list[idx]);
- spin_unlock_irqrestore(&adapter->req_list_lock, flags);
+ zfcp_reqlist_add(adapter->req_list, req);
- req->queue_req.qdio_outb_usage = atomic_read(&qdio->req_q.count);
+ req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q.count);
req->issued = get_clock();
- if (zfcp_qdio_send(qdio, &req->queue_req)) {
+ if (zfcp_qdio_send(qdio, &req->qdio_req)) {
del_timer(&req->timer);
- spin_lock_irqsave(&adapter->req_list_lock, flags);
/* lookup request again, list might have changed */
- if (zfcp_reqlist_find_safe(adapter, req))
- zfcp_reqlist_remove(adapter, req);
- spin_unlock_irqrestore(&adapter->req_list_lock, flags);
+ zfcp_reqlist_find_rm(adapter->req_list, req_id);
zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req);
return -EIO;
}
@@ -826,9 +816,9 @@ int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
goto out;
}
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
- req->queue_req.sbale_curr = 2;
+ req->qdio_req.sbale_curr = 2;
sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC);
if (!sr_buf) {
@@ -837,7 +827,7 @@ int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
}
memset(sr_buf, 0, sizeof(*sr_buf));
req->data = sr_buf;
- sbale = zfcp_qdio_sbale_curr(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_curr(qdio, &req->qdio_req);
sbale->addr = (void *) sr_buf;
sbale->length = sizeof(*sr_buf);
@@ -934,7 +924,7 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
ZFCP_STATUS_COMMON_UNBLOCKED)))
goto out_error_free;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -1029,7 +1019,7 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
{
struct zfcp_adapter *adapter = req->adapter;
struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter->qdio,
- &req->queue_req);
+ &req->qdio_req);
u32 feat = adapter->adapter_features;
int bytes;
@@ -1047,15 +1037,15 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
return 0;
}
- bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
+ bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
SBAL_FLAGS0_TYPE_WRITE_READ,
sg_req, max_sbals);
if (bytes <= 0)
return -EIO;
req->qtcb->bottom.support.req_buf_length = bytes;
- req->queue_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
+ req->qdio_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
- bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
+ bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
SBAL_FLAGS0_TYPE_WRITE_READ,
sg_resp, max_sbals);
req->qtcb->bottom.support.resp_buf_length = bytes;
@@ -1251,7 +1241,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -1262,13 +1252,13 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
FSF_FEATURE_UPDATE_ALERT;
req->erp_action = erp_action;
req->handler = zfcp_fsf_exchange_config_data_handler;
- erp_action->fsf_req = req;
+ erp_action->fsf_req_id = req->req_id;
zfcp_fsf_start_erp_timer(req);
retval = zfcp_fsf_req_send(req);
if (retval) {
zfcp_fsf_req_free(req);
- erp_action->fsf_req = NULL;
+ erp_action->fsf_req_id = 0;
}
out:
spin_unlock_bh(&qdio->req_q_lock);
@@ -1293,7 +1283,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
goto out_unlock;
}
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
req->handler = zfcp_fsf_exchange_config_data_handler;
@@ -1349,19 +1339,19 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
req->handler = zfcp_fsf_exchange_port_data_handler;
req->erp_action = erp_action;
- erp_action->fsf_req = req;
+ erp_action->fsf_req_id = req->req_id;
zfcp_fsf_start_erp_timer(req);
retval = zfcp_fsf_req_send(req);
if (retval) {
zfcp_fsf_req_free(req);
- erp_action->fsf_req = NULL;
+ erp_action->fsf_req_id = 0;
}
out:
spin_unlock_bh(&qdio->req_q_lock);
@@ -1398,7 +1388,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
if (data)
req->data = data;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -1484,7 +1474,7 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
}
out:
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
}
/**
@@ -1513,7 +1503,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -1521,15 +1511,15 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
hton24(req->qtcb->bottom.support.d_id, port->d_id);
req->data = port;
req->erp_action = erp_action;
- erp_action->fsf_req = req;
- get_device(&port->sysfs_device);
+ erp_action->fsf_req_id = req->req_id;
+ get_device(&port->dev);
zfcp_fsf_start_erp_timer(req);
retval = zfcp_fsf_req_send(req);
if (retval) {
zfcp_fsf_req_free(req);
- erp_action->fsf_req = NULL;
- put_device(&port->sysfs_device);
+ erp_action->fsf_req_id = 0;
+ put_device(&port->dev);
}
out:
spin_unlock_bh(&qdio->req_q_lock);
@@ -1583,7 +1573,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -1591,13 +1581,13 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
req->data = erp_action->port;
req->erp_action = erp_action;
req->qtcb->header.port_handle = erp_action->port->handle;
- erp_action->fsf_req = req;
+ erp_action->fsf_req_id = req->req_id;
zfcp_fsf_start_erp_timer(req);
retval = zfcp_fsf_req_send(req);
if (retval) {
zfcp_fsf_req_free(req);
- erp_action->fsf_req = NULL;
+ erp_action->fsf_req_id = 0;
}
out:
spin_unlock_bh(&qdio->req_q_lock);
@@ -1660,7 +1650,7 @@ int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -1715,7 +1705,7 @@ int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -1809,7 +1799,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -1817,13 +1807,13 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
req->qtcb->header.port_handle = erp_action->port->handle;
req->erp_action = erp_action;
req->handler = zfcp_fsf_close_physical_port_handler;
- erp_action->fsf_req = req;
+ erp_action->fsf_req_id = req->req_id;
zfcp_fsf_start_erp_timer(req);
retval = zfcp_fsf_req_send(req);
if (retval) {
zfcp_fsf_req_free(req);
- erp_action->fsf_req = NULL;
+ erp_action->fsf_req_id = 0;
}
out:
spin_unlock_bh(&qdio->req_q_lock);
@@ -1982,7 +1972,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -1991,7 +1981,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
req->handler = zfcp_fsf_open_unit_handler;
req->data = erp_action->unit;
req->erp_action = erp_action;
- erp_action->fsf_req = req;
+ erp_action->fsf_req_id = req->req_id;
if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
@@ -2000,7 +1990,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
retval = zfcp_fsf_req_send(req);
if (retval) {
zfcp_fsf_req_free(req);
- erp_action->fsf_req = NULL;
+ erp_action->fsf_req_id = 0;
}
out:
spin_unlock_bh(&qdio->req_q_lock);
@@ -2068,7 +2058,7 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -2077,13 +2067,13 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
req->handler = zfcp_fsf_close_unit_handler;
req->data = erp_action->unit;
req->erp_action = erp_action;
- erp_action->fsf_req = req;
+ erp_action->fsf_req_id = req->req_id;
zfcp_fsf_start_erp_timer(req);
retval = zfcp_fsf_req_send(req);
if (retval) {
zfcp_fsf_req_free(req);
- erp_action->fsf_req = NULL;
+ erp_action->fsf_req_id = 0;
}
out:
spin_unlock_bh(&qdio->req_q_lock);
@@ -2111,8 +2101,8 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
blktrc.flags |= ZFCP_BLK_REQ_ERROR;
- blktrc.inb_usage = req->queue_req.qdio_inb_usage;
- blktrc.outb_usage = req->queue_req.qdio_outb_usage;
+ blktrc.inb_usage = req->qdio_req.qdio_inb_usage;
+ blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) {
blktrc.flags |= ZFCP_BLK_LAT_VALID;
@@ -2169,12 +2159,7 @@ static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
zfcp_fsf_req_trace(req, scpnt);
skip_fsfstatus:
- if (scpnt->result != 0)
- zfcp_dbf_scsi_result("erro", 3, req->adapter->dbf, scpnt, req);
- else if (scpnt->retries > 0)
- zfcp_dbf_scsi_result("retr", 4, req->adapter->dbf, scpnt, req);
- else
- zfcp_dbf_scsi_result("norm", 6, req->adapter->dbf, scpnt, req);
+ zfcp_dbf_scsi_result(req->adapter->dbf, scpnt, req);
scpnt->host_scribble = NULL;
(scpnt->scsi_done) (scpnt);
@@ -2274,7 +2259,7 @@ skip_fsfstatus:
else {
zfcp_fsf_send_fcp_command_task_handler(req);
req->unit = NULL;
- put_device(&unit->sysfs_device);
+ put_device(&unit->dev);
}
}
@@ -2312,7 +2297,7 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- get_device(&unit->sysfs_device);
+ get_device(&unit->dev);
req->unit = unit;
req->data = scsi_cmnd;
req->handler = zfcp_fsf_send_fcp_command_handler;
@@ -2346,11 +2331,11 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
- real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req, sbtype,
+ real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sbtype,
scsi_sglist(scsi_cmnd),
FSF_MAX_SBALS_PER_REQ);
if (unlikely(real_bytes < 0)) {
- if (req->queue_req.sbal_number >= FSF_MAX_SBALS_PER_REQ) {
+ if (req->qdio_req.sbal_number >= FSF_MAX_SBALS_PER_REQ) {
dev_err(&adapter->ccw_device->dev,
"Oversize data package, unit 0x%016Lx "
"on port 0x%016Lx closed\n",
@@ -2369,7 +2354,7 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
goto out;
failed_scsi_cmnd:
- put_device(&unit->sysfs_device);
+ put_device(&unit->dev);
zfcp_fsf_req_free(req);
scsi_cmnd->host_scribble = NULL;
out:
@@ -2415,7 +2400,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
req->qtcb->bottom.io.service_class = FSF_CLASS_3;
req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@@ -2478,14 +2463,14 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
req->handler = zfcp_fsf_control_file_handler;
- sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
+ sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req);
sbale[0].flags |= direction;
bottom = &req->qtcb->bottom.support;
bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
bottom->option = fsf_cfdc->option;
- bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req,
+ bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
direction, fsf_cfdc->sg,
FSF_MAX_SBALS_PER_REQ);
if (bytes != ZFCP_CFDC_MAX_SIZE) {
@@ -2516,15 +2501,14 @@ void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx];
struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req;
- unsigned long flags, req_id;
+ unsigned long req_id;
int idx;
for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
sbale = &sbal->element[idx];
req_id = (unsigned long) sbale->addr;
- spin_lock_irqsave(&adapter->req_list_lock, flags);
- fsf_req = zfcp_reqlist_find(adapter, req_id);
+ fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
if (!fsf_req)
/*
@@ -2534,11 +2518,8 @@ void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
panic("error: unknown req_id (%lx) on adapter %s.\n",
req_id, dev_name(&adapter->ccw_device->dev));
- list_del(&fsf_req->list);
- spin_unlock_irqrestore(&adapter->req_list_lock, flags);
-
- fsf_req->queue_req.sbal_response = sbal_idx;
- fsf_req->queue_req.qdio_inb_usage =
+ fsf_req->qdio_req.sbal_response = sbal_idx;
+ fsf_req->qdio_req.qdio_inb_usage =
atomic_read(&qdio->resp_q.count);
zfcp_fsf_req_complete(fsf_req);
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c
index 6c5228b627f..71b97ff77cf 100644
--- a/drivers/s390/scsi/zfcp_qdio.c
+++ b/drivers/s390/scsi/zfcp_qdio.c
@@ -10,6 +10,7 @@
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include "zfcp_ext.h"
+#include "zfcp_qdio.h"
#define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer))
@@ -28,12 +29,6 @@ static int zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbal)
return 0;
}
-static struct qdio_buffer_element *
-zfcp_qdio_sbale(struct zfcp_qdio_queue *q, int sbal_idx, int sbale_idx)
-{
- return &q->sbal[sbal_idx]->element[sbale_idx];
-}
-
static void zfcp_qdio_handler_error(struct zfcp_qdio *qdio, char *id)
{
struct zfcp_adapter *adapter = qdio->adapter;
@@ -106,7 +101,7 @@ static void zfcp_qdio_resp_put_back(struct zfcp_qdio *qdio, int processed)
if (unlikely(retval)) {
atomic_set(&queue->count, count);
- /* FIXME: Recover this with an adapter reopen? */
+ zfcp_erp_adapter_reopen(qdio->adapter, 0, "qdrpb_1", NULL);
} else {
queue->first += count;
queue->first %= QDIO_MAX_BUFFERS_PER_Q;
@@ -145,32 +140,8 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err,
zfcp_qdio_resp_put_back(qdio, count);
}
-/**
- * zfcp_qdio_sbale_req - return ptr to SBALE of req_q for a struct zfcp_fsf_req
- * @qdio: pointer to struct zfcp_qdio
- * @q_rec: pointer to struct zfcp_queue_rec
- * Returns: pointer to qdio_buffer_element (SBALE) structure
- */
-struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req)
-{
- return zfcp_qdio_sbale(&qdio->req_q, q_req->sbal_last, 0);
-}
-
-/**
- * zfcp_qdio_sbale_curr - return curr SBALE on req_q for a struct zfcp_fsf_req
- * @fsf_req: pointer to struct fsf_req
- * Returns: pointer to qdio_buffer_element (SBALE) structure
- */
-struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req)
-{
- return zfcp_qdio_sbale(&qdio->req_q, q_req->sbal_last,
- q_req->sbale_curr);
-}
-
static void zfcp_qdio_sbal_limit(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req, int max_sbals)
+ struct zfcp_qdio_req *q_req, int max_sbals)
{
int count = atomic_read(&qdio->req_q.count);
count = min(count, max_sbals);
@@ -179,7 +150,7 @@ static void zfcp_qdio_sbal_limit(struct zfcp_qdio *qdio,
}
static struct qdio_buffer_element *
-zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req,
+zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
unsigned long sbtype)
{
struct qdio_buffer_element *sbale;
@@ -214,7 +185,7 @@ zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req,
}
static struct qdio_buffer_element *
-zfcp_qdio_sbale_next(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req,
+zfcp_qdio_sbale_next(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
unsigned int sbtype)
{
if (q_req->sbale_curr == ZFCP_LAST_SBALE_PER_SBAL)
@@ -224,7 +195,7 @@ zfcp_qdio_sbale_next(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req,
}
static void zfcp_qdio_undo_sbals(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req)
+ struct zfcp_qdio_req *q_req)
{
struct qdio_buffer **sbal = qdio->req_q.sbal;
int first = q_req->sbal_first;
@@ -235,7 +206,7 @@ static void zfcp_qdio_undo_sbals(struct zfcp_qdio *qdio,
}
static int zfcp_qdio_fill_sbals(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req,
+ struct zfcp_qdio_req *q_req,
unsigned int sbtype, void *start_addr,
unsigned int total_length)
{
@@ -271,8 +242,7 @@ static int zfcp_qdio_fill_sbals(struct zfcp_qdio *qdio,
* @max_sbals: upper bound for number of SBALs to be used
* Returns: number of bytes, or error (negativ)
*/
-int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req,
+int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
unsigned long sbtype, struct scatterlist *sg,
int max_sbals)
{
@@ -304,10 +274,10 @@ int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *qdio,
/**
* zfcp_qdio_send - set PCI flag in first SBALE and send req to QDIO
* @qdio: pointer to struct zfcp_qdio
- * @q_req: pointer to struct zfcp_queue_req
+ * @q_req: pointer to struct zfcp_qdio_req
* Returns: 0 on success, error otherwise
*/
-int zfcp_qdio_send(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req)
+int zfcp_qdio_send(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req)
{
struct zfcp_qdio_queue *req_q = &qdio->req_q;
int first = q_req->sbal_first;
diff --git a/drivers/s390/scsi/zfcp_qdio.h b/drivers/s390/scsi/zfcp_qdio.h
new file mode 100644
index 00000000000..8cca54631e1
--- /dev/null
+++ b/drivers/s390/scsi/zfcp_qdio.h
@@ -0,0 +1,109 @@
+/*
+ * zfcp device driver
+ *
+ * Header file for zfcp qdio interface
+ *
+ * Copyright IBM Corporation 2010
+ */
+
+#ifndef ZFCP_QDIO_H
+#define ZFCP_QDIO_H
+
+#include <asm/qdio.h>
+
+/**
+ * struct zfcp_qdio_queue - qdio queue buffer, zfcp index and free count
+ * @sbal: qdio buffers
+ * @first: index of next free buffer in queue
+ * @count: number of free buffers in queue
+ */
+struct zfcp_qdio_queue {
+ struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q];
+ u8 first;
+ atomic_t count;
+};
+
+/**
+ * struct zfcp_qdio - basic qdio data structure
+ * @resp_q: response queue
+ * @req_q: request queue
+ * @stat_lock: lock to protect req_q_util and req_q_time
+ * @req_q_lock: lock to serialize access to request queue
+ * @req_q_time: time of last fill level change
+ * @req_q_util: used for accounting
+ * @req_q_full: queue full incidents
+ * @req_q_wq: used to wait for SBAL availability
+ * @adapter: adapter used in conjunction with this qdio structure
+ */
+struct zfcp_qdio {
+ struct zfcp_qdio_queue resp_q;
+ struct zfcp_qdio_queue req_q;
+ spinlock_t stat_lock;
+ spinlock_t req_q_lock;
+ unsigned long long req_q_time;
+ u64 req_q_util;
+ atomic_t req_q_full;
+ wait_queue_head_t req_q_wq;
+ struct zfcp_adapter *adapter;
+};
+
+/**
+ * struct zfcp_qdio_req - qdio queue related values for a request
+ * @sbal_number: number of free sbals
+ * @sbal_first: first sbal for this request
+ * @sbal_last: last sbal for this request
+ * @sbal_limit: last possible sbal for this request
+ * @sbale_curr: current sbale at creation of this request
+ * @sbal_response: sbal used in interrupt
+ * @qdio_outb_usage: usage of outbound queue
+ * @qdio_inb_usage: usage of inbound queue
+ */
+struct zfcp_qdio_req {
+ u8 sbal_number;
+ u8 sbal_first;
+ u8 sbal_last;
+ u8 sbal_limit;
+ u8 sbale_curr;
+ u8 sbal_response;
+ u16 qdio_outb_usage;
+ u16 qdio_inb_usage;
+};
+
+/**
+ * zfcp_qdio_sbale - return pointer to sbale in qdio queue
+ * @q: queue where to find sbal
+ * @sbal_idx: sbal index in queue
+ * @sbale_idx: sbale index in sbal
+ */
+static inline struct qdio_buffer_element *
+zfcp_qdio_sbale(struct zfcp_qdio_queue *q, int sbal_idx, int sbale_idx)
+{
+ return &q->sbal[sbal_idx]->element[sbale_idx];
+}
+
+/**
+ * zfcp_qdio_sbale_req - return pointer to sbale on req_q for a request
+ * @qdio: pointer to struct zfcp_qdio
+ * @q_rec: pointer to struct zfcp_qdio_req
+ * Returns: pointer to qdio_buffer_element (sbale) structure
+ */
+static inline struct qdio_buffer_element *
+zfcp_qdio_sbale_req(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req)
+{
+ return zfcp_qdio_sbale(&qdio->req_q, q_req->sbal_last, 0);
+}
+
+/**
+ * zfcp_qdio_sbale_curr - return current sbale on req_q for a request
+ * @qdio: pointer to struct zfcp_qdio
+ * @fsf_req: pointer to struct zfcp_fsf_req
+ * Returns: pointer to qdio_buffer_element (sbale) structure
+ */
+static inline struct qdio_buffer_element *
+zfcp_qdio_sbale_curr(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req)
+{
+ return zfcp_qdio_sbale(&qdio->req_q, q_req->sbal_last,
+ q_req->sbale_curr);
+}
+
+#endif /* ZFCP_QDIO_H */
diff --git a/drivers/s390/scsi/zfcp_reqlist.h b/drivers/s390/scsi/zfcp_reqlist.h
new file mode 100644
index 00000000000..a72d1b730ab
--- /dev/null
+++ b/drivers/s390/scsi/zfcp_reqlist.h
@@ -0,0 +1,183 @@
+/*
+ * zfcp device driver
+ *
+ * Data structure and helper functions for tracking pending FSF
+ * requests.
+ *
+ * Copyright IBM Corporation 2009
+ */
+
+#ifndef ZFCP_REQLIST_H
+#define ZFCP_REQLIST_H
+
+/* number of hash buckets */
+#define ZFCP_REQ_LIST_BUCKETS 128
+
+/**
+ * struct zfcp_reqlist - Container for request list (reqlist)
+ * @lock: Spinlock for protecting the hash list
+ * @list: Array of hashbuckets, each is a list of requests in this bucket
+ */
+struct zfcp_reqlist {
+ spinlock_t lock;
+ struct list_head buckets[ZFCP_REQ_LIST_BUCKETS];
+};
+
+static inline int zfcp_reqlist_hash(unsigned long req_id)
+{
+ return req_id % ZFCP_REQ_LIST_BUCKETS;
+}
+
+/**
+ * zfcp_reqlist_alloc - Allocate and initialize reqlist
+ *
+ * Returns pointer to allocated reqlist on success, or NULL on
+ * allocation failure.
+ */
+static inline struct zfcp_reqlist *zfcp_reqlist_alloc(void)
+{
+ unsigned int i;
+ struct zfcp_reqlist *rl;
+
+ rl = kzalloc(sizeof(struct zfcp_reqlist), GFP_KERNEL);
+ if (!rl)
+ return NULL;
+
+ spin_lock_init(&rl->lock);
+
+ for (i = 0; i < ZFCP_REQ_LIST_BUCKETS; i++)
+ INIT_LIST_HEAD(&rl->buckets[i]);
+
+ return rl;
+}
+
+/**
+ * zfcp_reqlist_isempty - Check whether the request list empty
+ * @rl: pointer to reqlist
+ *
+ * Returns: 1 if list is empty, 0 if not
+ */
+static inline int zfcp_reqlist_isempty(struct zfcp_reqlist *rl)
+{
+ unsigned int i;
+
+ for (i = 0; i < ZFCP_REQ_LIST_BUCKETS; i++)
+ if (!list_empty(&rl->buckets[i]))
+ return 0;
+ return 1;
+}
+
+/**
+ * zfcp_reqlist_free - Free allocated memory for reqlist
+ * @rl: The reqlist where to free memory
+ */
+static inline void zfcp_reqlist_free(struct zfcp_reqlist *rl)
+{
+ /* sanity check */
+ BUG_ON(!zfcp_reqlist_isempty(rl));
+
+ kfree(rl);
+}
+
+static inline struct zfcp_fsf_req *
+_zfcp_reqlist_find(struct zfcp_reqlist *rl, unsigned long req_id)
+{
+ struct zfcp_fsf_req *req;
+ unsigned int i;
+
+ i = zfcp_reqlist_hash(req_id);
+ list_for_each_entry(req, &rl->buckets[i], list)
+ if (req->req_id == req_id)
+ return req;
+ return NULL;
+}
+
+/**
+ * zfcp_reqlist_find - Lookup FSF request by its request id
+ * @rl: The reqlist where to lookup the FSF request
+ * @req_id: The request id to look for
+ *
+ * Returns a pointer to the FSF request with the specified request id
+ * or NULL if there is no known FSF request with this id.
+ */
+static inline struct zfcp_fsf_req *
+zfcp_reqlist_find(struct zfcp_reqlist *rl, unsigned long req_id)
+{
+ unsigned long flags;
+ struct zfcp_fsf_req *req;
+
+ spin_lock_irqsave(&rl->lock, flags);
+ req = _zfcp_reqlist_find(rl, req_id);
+ spin_unlock_irqrestore(&rl->lock, flags);
+
+ return req;
+}
+
+/**
+ * zfcp_reqlist_find_rm - Lookup request by id and remove it from reqlist
+ * @rl: reqlist where to search and remove entry
+ * @req_id: The request id of the request to look for
+ *
+ * This functions tries to find the FSF request with the specified
+ * id and then removes it from the reqlist. The reqlist lock is held
+ * during both steps of the operation.
+ *
+ * Returns: Pointer to the FSF request if the request has been found,
+ * NULL if it has not been found.
+ */
+static inline struct zfcp_fsf_req *
+zfcp_reqlist_find_rm(struct zfcp_reqlist *rl, unsigned long req_id)
+{
+ unsigned long flags;
+ struct zfcp_fsf_req *req;
+
+ spin_lock_irqsave(&rl->lock, flags);
+ req = _zfcp_reqlist_find(rl, req_id);
+ if (req)
+ list_del(&req->list);
+ spin_unlock_irqrestore(&rl->lock, flags);
+
+ return req;
+}
+
+/**
+ * zfcp_reqlist_add - Add entry to reqlist
+ * @rl: reqlist where to add the entry
+ * @req: The entry to add
+ *
+ * The request id always increases. As an optimization new requests
+ * are added here with list_add_tail at the end of the bucket lists
+ * while old requests are looked up starting at the beginning of the
+ * lists.
+ */
+static inline void zfcp_reqlist_add(struct zfcp_reqlist *rl,
+ struct zfcp_fsf_req *req)
+{
+ unsigned int i;
+ unsigned long flags;
+
+ i = zfcp_reqlist_hash(req->req_id);
+
+ spin_lock_irqsave(&rl->lock, flags);
+ list_add_tail(&req->list, &rl->buckets[i]);
+ spin_unlock_irqrestore(&rl->lock, flags);
+}
+
+/**
+ * zfcp_reqlist_move - Move all entries from reqlist to simple list
+ * @rl: The zfcp_reqlist where to remove all entries
+ * @list: The list where to move all entries
+ */
+static inline void zfcp_reqlist_move(struct zfcp_reqlist *rl,
+ struct list_head *list)
+{
+ unsigned int i;
+ unsigned long flags;
+
+ spin_lock_irqsave(&rl->lock, flags);
+ for (i = 0; i < ZFCP_REQ_LIST_BUCKETS; i++)
+ list_splice_init(&rl->buckets[i], list);
+ spin_unlock_irqrestore(&rl->lock, flags);
+}
+
+#endif /* ZFCP_REQLIST_H */
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 8e6fc68d6bd..c3c4178888a 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -3,7 +3,7 @@
*
* Interface to Linux SCSI midlayer.
*
- * Copyright IBM Corporation 2002, 2009
+ * Copyright IBM Corporation 2002, 2010
*/
#define KMSG_COMPONENT "zfcp"
@@ -15,6 +15,7 @@
#include "zfcp_ext.h"
#include "zfcp_dbf.h"
#include "zfcp_fc.h"
+#include "zfcp_reqlist.h"
static unsigned int default_depth = 32;
module_param_named(queue_depth, default_depth, uint, 0600);
@@ -43,7 +44,7 @@ static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
{
struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
unit->device = NULL;
- put_device(&unit->sysfs_device);
+ put_device(&unit->dev);
}
static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
@@ -59,10 +60,9 @@ static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
{
struct zfcp_adapter *adapter =
(struct zfcp_adapter *) scpnt->device->host->hostdata[0];
+
set_host_byte(scpnt, result);
- if ((scpnt->device != NULL) && (scpnt->device->host != NULL))
- zfcp_dbf_scsi_result("fail", 4, adapter->dbf, scpnt, NULL);
- /* return directly */
+ zfcp_dbf_scsi_fail_send(adapter->dbf, scpnt);
scpnt->scsi_done(scpnt);
}
@@ -86,18 +86,10 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
unit = scpnt->device->hostdata;
- BUG_ON(!adapter || (adapter != unit->port->adapter));
- BUG_ON(!scpnt->scsi_done);
-
- if (unlikely(!unit)) {
- zfcp_scsi_command_fail(scpnt, DID_NO_CONNECT);
- return 0;
- }
-
scsi_result = fc_remote_port_chkready(rport);
if (unlikely(scsi_result)) {
scpnt->result = scsi_result;
- zfcp_dbf_scsi_result("fail", 4, adapter->dbf, scpnt, NULL);
+ zfcp_dbf_scsi_fail_send(adapter->dbf, scpnt);
scpnt->scsi_done(scpnt);
return 0;
}
@@ -189,9 +181,7 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
/* avoid race condition between late normal completion and abort */
write_lock_irqsave(&adapter->abort_lock, flags);
- spin_lock(&adapter->req_list_lock);
- old_req = zfcp_reqlist_find(adapter, old_reqid);
- spin_unlock(&adapter->req_list_lock);
+ old_req = zfcp_reqlist_find(adapter->req_list, old_reqid);
if (!old_req) {
write_unlock_irqrestore(&adapter->abort_lock, flags);
zfcp_dbf_scsi_abort("lte1", adapter->dbf, scpnt, NULL,
@@ -521,7 +511,7 @@ static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
if (port) {
zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL);
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
}
}
@@ -563,23 +553,23 @@ static void zfcp_scsi_rport_block(struct zfcp_port *port)
void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
{
- get_device(&port->sysfs_device);
+ get_device(&port->dev);
port->rport_task = RPORT_ADD;
if (!queue_work(port->adapter->work_queue, &port->rport_work))
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
}
void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
{
- get_device(&port->sysfs_device);
+ get_device(&port->dev);
port->rport_task = RPORT_DEL;
if (port->rport && queue_work(port->adapter->work_queue,
&port->rport_work))
return;
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
}
void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
@@ -608,7 +598,7 @@ void zfcp_scsi_rport_work(struct work_struct *work)
}
}
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
}
@@ -626,7 +616,7 @@ void zfcp_scsi_scan(struct work_struct *work)
scsilun_to_int((struct scsi_lun *)
&unit->fcp_lun), 0);
- put_device(&unit->sysfs_device);
+ put_device(&unit->dev);
}
struct fc_function_template zfcp_transport_functions = {
diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c
index f539e006683..a43035d4bd7 100644
--- a/drivers/s390/scsi/zfcp_sysfs.c
+++ b/drivers/s390/scsi/zfcp_sysfs.c
@@ -3,7 +3,7 @@
*
* sysfs attributes.
*
- * Copyright IBM Corporation 2008, 2009
+ * Copyright IBM Corporation 2008, 2010
*/
#define KMSG_COMPONENT "zfcp"
@@ -19,8 +19,7 @@ static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
struct device_attribute *at,\
char *buf) \
{ \
- struct _feat_def *_feat = container_of(dev, struct _feat_def, \
- sysfs_device); \
+ struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
\
return sprintf(buf, _format, _value); \
} \
@@ -87,8 +86,7 @@ static ssize_t zfcp_sysfs_##_feat##_failed_show(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
- struct _feat_def *_feat = container_of(dev, struct _feat_def, \
- sysfs_device); \
+ struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
\
if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED) \
return sprintf(buf, "1\n"); \
@@ -99,12 +97,11 @@ static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev, \
struct device_attribute *attr,\
const char *buf, size_t count)\
{ \
- struct _feat_def *_feat = container_of(dev, struct _feat_def, \
- sysfs_device); \
+ struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
unsigned long val; \
int retval = 0; \
\
- if (!(_feat && get_device(&_feat->sysfs_device))) \
+ if (!(_feat && get_device(&_feat->dev))) \
return -EBUSY; \
\
if (strict_strtoul(buf, 0, &val) || val != 0) { \
@@ -118,7 +115,7 @@ static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev, \
_reopen_id, NULL); \
zfcp_erp_wait(_adapter); \
out: \
- put_device(&_feat->sysfs_device); \
+ put_device(&_feat->dev); \
return retval ? retval : (ssize_t) count; \
} \
static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO, \
@@ -224,10 +221,10 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
list_del(&port->list);
write_unlock_irq(&adapter->port_list_lock);
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
zfcp_erp_port_shutdown(port, 0, "syprs_1", NULL);
- zfcp_device_unregister(&port->sysfs_device, &zfcp_sysfs_port_attrs);
+ zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
out:
zfcp_ccw_adapter_put(adapter);
return retval ? retval : (ssize_t) count;
@@ -258,13 +255,12 @@ static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct zfcp_port *port = container_of(dev, struct zfcp_port,
- sysfs_device);
+ struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
struct zfcp_unit *unit;
u64 fcp_lun;
int retval = -EINVAL;
- if (!(port && get_device(&port->sysfs_device)))
+ if (!(port && get_device(&port->dev)))
return -EBUSY;
if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
@@ -280,7 +276,7 @@ static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
zfcp_erp_wait(unit->port->adapter);
flush_work(&unit->scsi_work);
out:
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
return retval ? retval : (ssize_t) count;
}
static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
@@ -289,13 +285,12 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct zfcp_port *port = container_of(dev, struct zfcp_port,
- sysfs_device);
+ struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
struct zfcp_unit *unit;
u64 fcp_lun;
int retval = -EINVAL;
- if (!(port && get_device(&port->sysfs_device)))
+ if (!(port && get_device(&port->dev)))
return -EBUSY;
if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
@@ -314,12 +309,12 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
list_del(&unit->list);
write_unlock_irq(&port->unit_list_lock);
- put_device(&unit->sysfs_device);
+ put_device(&unit->dev);
zfcp_erp_unit_shutdown(unit, 0, "syurs_1", NULL);
- zfcp_device_unregister(&unit->sysfs_device, &zfcp_sysfs_unit_attrs);
+ zfcp_device_unregister(&unit->dev, &zfcp_sysfs_unit_attrs);
out:
- put_device(&port->sysfs_device);
+ put_device(&port->dev);
return retval ? retval : (ssize_t) count;
}
static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-28 03:26:48 +0000