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-rw-r--r--drivers/s390/cio/ccwgroup.c6
-rw-r--r--drivers/s390/cio/chsc_sch.c17
-rw-r--r--drivers/s390/cio/cio.c43
-rw-r--r--drivers/s390/cio/cio.h11
-rw-r--r--drivers/s390/cio/css.c6
-rw-r--r--drivers/s390/cio/css.h10
-rw-r--r--drivers/s390/cio/device.c58
-rw-r--r--drivers/s390/cio/device.h1
-rw-r--r--drivers/s390/cio/device_fsm.c4
-rw-r--r--drivers/s390/cio/io_sch.h114
-rw-r--r--drivers/s390/cio/ioasm.h34
-rw-r--r--drivers/s390/cio/orb.h67
-rw-r--r--drivers/s390/cio/qdio_main.c23
13 files changed, 203 insertions, 191 deletions
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 2864581d8ecb..5c567414c4bb 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -428,7 +428,7 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const
gdev = to_ccwgroupdev(dev);
gdrv = to_ccwgroupdrv(dev->driver);
- if (!try_module_get(gdrv->owner))
+ if (!try_module_get(gdrv->driver.owner))
return -EINVAL;
ret = strict_strtoul(buf, 0, &value);
@@ -442,7 +442,7 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const
else
ret = -EINVAL;
out:
- module_put(gdrv->owner);
+ module_put(gdrv->driver.owner);
return (ret == 0) ? count : ret;
}
@@ -616,8 +616,6 @@ int ccwgroup_driver_register(struct ccwgroup_driver *cdriver)
{
/* register our new driver with the core */
cdriver->driver.bus = &ccwgroup_bus_type;
- cdriver->driver.name = cdriver->name;
- cdriver->driver.owner = cdriver->owner;
return driver_register(&cdriver->driver);
}
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 3c3f3ffe2179..e950f1ad4dd1 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -50,7 +50,7 @@ MODULE_LICENSE("GPL");
static void chsc_subchannel_irq(struct subchannel *sch)
{
- struct chsc_private *private = sch->private;
+ struct chsc_private *private = dev_get_drvdata(&sch->dev);
struct chsc_request *request = private->request;
struct irb *irb = (struct irb *)&S390_lowcore.irb;
@@ -80,13 +80,14 @@ static int chsc_subchannel_probe(struct subchannel *sch)
private = kzalloc(sizeof(*private), GFP_KERNEL);
if (!private)
return -ENOMEM;
+ dev_set_drvdata(&sch->dev, private);
ret = cio_enable_subchannel(sch, (u32)(unsigned long)sch);
if (ret) {
CHSC_MSG(0, "Failed to enable 0.%x.%04x: %d\n",
sch->schid.ssid, sch->schid.sch_no, ret);
+ dev_set_drvdata(&sch->dev, NULL);
kfree(private);
} else {
- sch->private = private;
if (dev_get_uevent_suppress(&sch->dev)) {
dev_set_uevent_suppress(&sch->dev, 0);
kobject_uevent(&sch->dev.kobj, KOBJ_ADD);
@@ -100,8 +101,8 @@ static int chsc_subchannel_remove(struct subchannel *sch)
struct chsc_private *private;
cio_disable_subchannel(sch);
- private = sch->private;
- sch->private = NULL;
+ private = dev_get_drvdata(&sch->dev);
+ dev_set_drvdata(&sch->dev, NULL);
if (private->request) {
complete(&private->request->completion);
put_device(&sch->dev);
@@ -147,7 +148,10 @@ static struct css_device_id chsc_subchannel_ids[] = {
MODULE_DEVICE_TABLE(css, chsc_subchannel_ids);
static struct css_driver chsc_subchannel_driver = {
- .owner = THIS_MODULE,
+ .drv = {
+ .owner = THIS_MODULE,
+ .name = "chsc_subchannel",
+ },
.subchannel_type = chsc_subchannel_ids,
.irq = chsc_subchannel_irq,
.probe = chsc_subchannel_probe,
@@ -157,7 +161,6 @@ static struct css_driver chsc_subchannel_driver = {
.freeze = chsc_subchannel_freeze,
.thaw = chsc_subchannel_restore,
.restore = chsc_subchannel_restore,
- .name = "chsc_subchannel",
};
static int __init chsc_init_dbfs(void)
@@ -241,7 +244,7 @@ static int chsc_async(struct chsc_async_area *chsc_area,
chsc_area->header.key = PAGE_DEFAULT_KEY >> 4;
while ((sch = chsc_get_next_subchannel(sch))) {
spin_lock(sch->lock);
- private = sch->private;
+ private = dev_get_drvdata(&sch->dev);
if (private->request) {
spin_unlock(sch->lock);
ret = -EBUSY;
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 430f875006f2..cbde448f9947 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -84,29 +84,14 @@ out_unregister:
arch_initcall (cio_debug_init);
-int
-cio_set_options (struct subchannel *sch, int flags)
+int cio_set_options(struct subchannel *sch, int flags)
{
- sch->options.suspend = (flags & DOIO_ALLOW_SUSPEND) != 0;
- sch->options.prefetch = (flags & DOIO_DENY_PREFETCH) != 0;
- sch->options.inter = (flags & DOIO_SUPPRESS_INTER) != 0;
- return 0;
-}
+ struct io_subchannel_private *priv = to_io_private(sch);
-/* FIXME: who wants to use this? */
-int
-cio_get_options (struct subchannel *sch)
-{
- int flags;
-
- flags = 0;
- if (sch->options.suspend)
- flags |= DOIO_ALLOW_SUSPEND;
- if (sch->options.prefetch)
- flags |= DOIO_DENY_PREFETCH;
- if (sch->options.inter)
- flags |= DOIO_SUPPRESS_INTER;
- return flags;
+ priv->options.suspend = (flags & DOIO_ALLOW_SUSPEND) != 0;
+ priv->options.prefetch = (flags & DOIO_DENY_PREFETCH) != 0;
+ priv->options.inter = (flags & DOIO_SUPPRESS_INTER) != 0;
+ return 0;
}
static int
@@ -139,21 +124,21 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */
__u8 lpm, /* logical path mask */
__u8 key) /* storage key */
{
+ struct io_subchannel_private *priv = to_io_private(sch);
+ union orb *orb = &priv->orb;
int ccode;
- union orb *orb;
CIO_TRACE_EVENT(5, "stIO");
CIO_TRACE_EVENT(5, dev_name(&sch->dev));
- orb = &to_io_private(sch)->orb;
memset(orb, 0, sizeof(union orb));
/* sch is always under 2G. */
orb->cmd.intparm = (u32)(addr_t)sch;
orb->cmd.fmt = 1;
- orb->cmd.pfch = sch->options.prefetch == 0;
- orb->cmd.spnd = sch->options.suspend;
- orb->cmd.ssic = sch->options.suspend && sch->options.inter;
+ orb->cmd.pfch = priv->options.prefetch == 0;
+ orb->cmd.spnd = priv->options.suspend;
+ orb->cmd.ssic = priv->options.suspend && priv->options.inter;
orb->cmd.lpm = (lpm != 0) ? lpm : sch->lpm;
#ifdef CONFIG_64BIT
/*
@@ -630,11 +615,7 @@ void __irq_entry do_IRQ(struct pt_regs *regs)
irb = (struct irb *)&S390_lowcore.irb;
do {
kstat_cpu(smp_processor_id()).irqs[IO_INTERRUPT]++;
- /*
- * Non I/O-subchannel thin interrupts are processed differently
- */
- if (tpi_info->adapter_IO == 1 &&
- tpi_info->int_type == IO_INTERRUPT_TYPE) {
+ if (tpi_info->adapter_IO) {
do_adapter_IO(tpi_info->isc);
continue;
}
diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index bf7f80f5a330..155a82bcb9e5 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -84,13 +84,6 @@ struct subchannel {
SUBCHANNEL_TYPE_MSG = 2,
SUBCHANNEL_TYPE_ADM = 3,
} st; /* subchannel type */
-
- struct {
- unsigned int suspend:1; /* allow suspend */
- unsigned int prefetch:1;/* deny prefetch */
- unsigned int inter:1; /* suppress intermediate interrupts */
- } __attribute__ ((packed)) options;
-
__u8 vpm; /* verified path mask */
__u8 lpm; /* logical path mask */
__u8 opm; /* operational path mask */
@@ -99,14 +92,11 @@ struct subchannel {
struct chsc_ssd_info ssd_info; /* subchannel description */
struct device dev; /* entry in device tree */
struct css_driver *driver;
- void *private; /* private per subchannel type data */
enum sch_todo todo;
struct work_struct todo_work;
struct schib_config config;
} __attribute__ ((aligned(8)));
-#define IO_INTERRUPT_TYPE 0 /* I/O interrupt type */
-
#define to_subchannel(n) container_of(n, struct subchannel, dev)
extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id);
@@ -120,7 +110,6 @@ extern int cio_start (struct subchannel *, struct ccw1 *, __u8);
extern int cio_start_key (struct subchannel *, struct ccw1 *, __u8, __u8);
extern int cio_cancel (struct subchannel *);
extern int cio_set_options (struct subchannel *, int);
-extern int cio_get_options (struct subchannel *);
extern int cio_update_schib(struct subchannel *sch);
extern int cio_commit_config(struct subchannel *sch);
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 24d8e97355b9..c47b25fd3f43 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -35,6 +35,7 @@ int css_init_done = 0;
int max_ssid;
struct channel_subsystem *channel_subsystems[__MAX_CSSID + 1];
+static struct bus_type css_bus_type;
int
for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *data)
@@ -1214,7 +1215,7 @@ static const struct dev_pm_ops css_pm_ops = {
.restore = css_pm_restore,
};
-struct bus_type css_bus_type = {
+static struct bus_type css_bus_type = {
.name = "css",
.match = css_bus_match,
.probe = css_probe,
@@ -1233,9 +1234,7 @@ struct bus_type css_bus_type = {
*/
int css_driver_register(struct css_driver *cdrv)
{
- cdrv->drv.name = cdrv->name;
cdrv->drv.bus = &css_bus_type;
- cdrv->drv.owner = cdrv->owner;
return driver_register(&cdrv->drv);
}
EXPORT_SYMBOL_GPL(css_driver_register);
@@ -1253,4 +1252,3 @@ void css_driver_unregister(struct css_driver *cdrv)
EXPORT_SYMBOL_GPL(css_driver_unregister);
MODULE_LICENSE("GPL");
-EXPORT_SYMBOL(css_bus_type);
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 7e37886de231..80ebdddf7747 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -63,7 +63,6 @@ struct subchannel;
struct chp_link;
/**
* struct css_driver - device driver for subchannels
- * @owner: owning module
* @subchannel_type: subchannel type supported by this driver
* @drv: embedded device driver structure
* @irq: called on interrupts
@@ -78,10 +77,8 @@ struct chp_link;
* @thaw: undo work done in @freeze
* @restore: callback for restoring after hibernation
* @settle: wait for asynchronous work to finish
- * @name: name of the device driver
*/
struct css_driver {
- struct module *owner;
struct css_device_id *subchannel_type;
struct device_driver drv;
void (*irq)(struct subchannel *);
@@ -96,16 +93,10 @@ struct css_driver {
int (*thaw) (struct subchannel *);
int (*restore)(struct subchannel *);
int (*settle)(void);
- const char *name;
};
#define to_cssdriver(n) container_of(n, struct css_driver, drv)
-/*
- * all css_drivers have the css_bus_type
- */
-extern struct bus_type css_bus_type;
-
extern int css_driver_register(struct css_driver *);
extern void css_driver_unregister(struct css_driver *);
@@ -140,7 +131,6 @@ struct channel_subsystem {
};
#define to_css(dev) container_of(dev, struct channel_subsystem, device)
-extern struct bus_type css_bus_type;
extern struct channel_subsystem *channel_subsystems[];
/* Helper functions to build lists for the slow path. */
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index b7eaff9ca19e..8e04c00cf0ad 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -127,7 +127,7 @@ static int ccw_uevent(struct device *dev, struct kobj_uevent_env *env)
return ret;
}
-struct bus_type ccw_bus_type;
+static struct bus_type ccw_bus_type;
static void io_subchannel_irq(struct subchannel *);
static int io_subchannel_probe(struct subchannel *);
@@ -172,9 +172,11 @@ static int io_subchannel_settle(void)
}
static struct css_driver io_subchannel_driver = {
- .owner = THIS_MODULE,
+ .drv = {
+ .owner = THIS_MODULE,
+ .name = "io_subchannel",
+ },
.subchannel_type = io_subchannel_ids,
- .name = "io_subchannel",
.irq = io_subchannel_irq,
.sch_event = io_subchannel_sch_event,
.chp_event = io_subchannel_chp_event,
@@ -539,15 +541,24 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr,
int force, ret;
unsigned long i;
- if (!dev_fsm_final_state(cdev) &&
- cdev->private->state != DEV_STATE_DISCONNECTED)
- return -EAGAIN;
+ /* Prevent conflict between multiple on-/offline processing requests. */
if (atomic_cmpxchg(&cdev->private->onoff, 0, 1) != 0)
return -EAGAIN;
+ /* Prevent conflict between internal I/Os and on-/offline processing. */
+ if (!dev_fsm_final_state(cdev) &&
+ cdev->private->state != DEV_STATE_DISCONNECTED) {
+ ret = -EAGAIN;
+ goto out_onoff;
+ }
+ /* Prevent conflict between pending work and on-/offline processing.*/
+ if (work_pending(&cdev->private->todo_work)) {
+ ret = -EAGAIN;
+ goto out_onoff;
+ }
- if (cdev->drv && !try_module_get(cdev->drv->owner)) {
- atomic_set(&cdev->private->onoff, 0);
- return -EINVAL;
+ if (cdev->drv && !try_module_get(cdev->drv->driver.owner)) {
+ ret = -EINVAL;
+ goto out_onoff;
}
if (!strncmp(buf, "force\n", count)) {
force = 1;
@@ -571,7 +582,8 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr,
}
out:
if (cdev->drv)
- module_put(cdev->drv->owner);
+ module_put(cdev->drv->driver.owner);
+out_onoff:
atomic_set(&cdev->private->onoff, 0);
return (ret < 0) ? ret : count;
}
@@ -1030,6 +1042,7 @@ static void io_subchannel_init_fields(struct subchannel *sch)
*/
static int io_subchannel_probe(struct subchannel *sch)
{
+ struct io_subchannel_private *io_priv;
struct ccw_device *cdev;
int rc;
@@ -1073,10 +1086,11 @@ static int io_subchannel_probe(struct subchannel *sch)
if (rc)
goto out_schedule;
/* Allocate I/O subchannel private data. */
- sch->private = kzalloc(sizeof(struct io_subchannel_private),
- GFP_KERNEL | GFP_DMA);
- if (!sch->private)
+ io_priv = kzalloc(sizeof(*io_priv), GFP_KERNEL | GFP_DMA);
+ if (!io_priv)
goto out_schedule;
+
+ set_io_private(sch, io_priv);
css_schedule_eval(sch->schid);
return 0;
@@ -1090,6 +1104,7 @@ out_schedule:
static int
io_subchannel_remove (struct subchannel *sch)
{
+ struct io_subchannel_private *io_priv = to_io_private(sch);
struct ccw_device *cdev;
cdev = sch_get_cdev(sch);
@@ -1099,11 +1114,12 @@ io_subchannel_remove (struct subchannel *sch)
/* Set ccw device to not operational and drop reference. */
spin_lock_irq(cdev->ccwlock);
sch_set_cdev(sch, NULL);
+ set_io_private(sch, NULL);
cdev->private->state = DEV_STATE_NOT_OPER;
spin_unlock_irq(cdev->ccwlock);
ccw_device_unregister(cdev);
out_free:
- kfree(sch->private);
+ kfree(io_priv);
sysfs_remove_group(&sch->dev.kobj, &io_subchannel_attr_group);
return 0;
}
@@ -1305,10 +1321,12 @@ static int purge_fn(struct device *dev, void *data)
spin_lock_irq(cdev->ccwlock);
if (is_blacklisted(id->ssid, id->devno) &&
- (cdev->private->state == DEV_STATE_OFFLINE)) {
+ (cdev->private->state == DEV_STATE_OFFLINE) &&
+ (atomic_cmpxchg(&cdev->private->onoff, 0, 1) == 0)) {
CIO_MSG_EVENT(3, "ccw: purging 0.%x.%04x\n", id->ssid,
id->devno);
ccw_device_sched_todo(cdev, CDEV_TODO_UNREG);
+ atomic_set(&cdev->private->onoff, 0);
}
spin_unlock_irq(cdev->ccwlock);
/* Abort loop in case of pending signal. */
@@ -1553,11 +1571,12 @@ spinlock_t * cio_get_console_lock(void)
static int ccw_device_console_enable(struct ccw_device *cdev,
struct subchannel *sch)
{
+ struct io_subchannel_private *io_priv = cio_get_console_priv();
int rc;
/* Attach subchannel private data. */
- sch->private = cio_get_console_priv();
- memset(sch->private, 0, sizeof(struct io_subchannel_private));
+ memset(io_priv, 0, sizeof(*io_priv));
+ set_io_private(sch, io_priv);
io_subchannel_init_fields(sch);
rc = cio_commit_config(sch);
if (rc)
@@ -1963,7 +1982,7 @@ static const struct dev_pm_ops ccw_pm_ops = {
.restore = ccw_device_pm_restore,
};
-struct bus_type ccw_bus_type = {
+static struct bus_type ccw_bus_type = {
.name = "ccw",
.match = ccw_bus_match,
.uevent = ccw_uevent,
@@ -1986,8 +2005,6 @@ int ccw_driver_register(struct ccw_driver *cdriver)
struct device_driver *drv = &cdriver->driver;
drv->bus = &ccw_bus_type;
- drv->name = cdriver->name;
- drv->owner = cdriver->owner;
return driver_register(drv);
}
@@ -2105,5 +2122,4 @@ EXPORT_SYMBOL(ccw_device_set_offline);
EXPORT_SYMBOL(ccw_driver_register);
EXPORT_SYMBOL(ccw_driver_unregister);
EXPORT_SYMBOL(get_ccwdev_by_busid);
-EXPORT_SYMBOL(ccw_bus_type);
EXPORT_SYMBOL_GPL(ccw_device_get_subchannel_id);
diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h
index 379de2d1ec49..7e297c7bb5ff 100644
--- a/drivers/s390/cio/device.h
+++ b/drivers/s390/cio/device.h
@@ -133,7 +133,6 @@ void ccw_device_set_notoper(struct ccw_device *cdev);
/* qdio needs this. */
void ccw_device_set_timeout(struct ccw_device *, int);
extern struct subchannel_id ccw_device_get_subchannel_id(struct ccw_device *);
-extern struct bus_type ccw_bus_type;
/* Channel measurement facility related */
void retry_set_schib(struct ccw_device *cdev);
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index a845695ac314..6084103672b5 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -318,7 +318,7 @@ ccw_device_sense_id_done(struct ccw_device *cdev, int err)
/**
* ccw_device_notify() - inform the device's driver about an event
- * @cdev: device for which an event occured
+ * @cdev: device for which an event occurred
* @event: event that occurred
*
* Returns:
@@ -688,7 +688,7 @@ ccw_device_online_verify(struct ccw_device *cdev, enum dev_event dev_event)
(scsw_stctl(&cdev->private->irb.scsw) & SCSW_STCTL_STATUS_PEND)) {
/*
* No final status yet or final status not yet delivered
- * to the device driver. Can't do path verfication now,
+ * to the device driver. Can't do path verification now,
* delay until final status was delivered.
*/
cdev->private->flags.doverify = 1;
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h
index d024d2c21897..ba31ad88f4f7 100644
--- a/drivers/s390/cio/io_sch.h
+++ b/drivers/s390/cio/io_sch.h
@@ -5,68 +5,36 @@
#include <asm/schid.h>
#include <asm/ccwdev.h>
#include "css.h"
-
-/*
- * command-mode operation request block
- */
-struct cmd_orb {
- u32 intparm; /* interruption parameter */
- u32 key : 4; /* flags, like key, suspend control, etc. */
- u32 spnd : 1; /* suspend control */
- u32 res1 : 1; /* reserved */
- u32 mod : 1; /* modification control */
- u32 sync : 1; /* synchronize control */
- u32 fmt : 1; /* format control */
- u32 pfch : 1; /* prefetch control */
- u32 isic : 1; /* initial-status-interruption control */
- u32 alcc : 1; /* address-limit-checking control */
- u32 ssic : 1; /* suppress-suspended-interr. control */
- u32 res2 : 1; /* reserved */
- u32 c64 : 1; /* IDAW/QDIO 64 bit control */
- u32 i2k : 1; /* IDAW 2/4kB block size control */
- u32 lpm : 8; /* logical path mask */
- u32 ils : 1; /* incorrect length */
- u32 zero : 6; /* reserved zeros */
- u32 orbx : 1; /* ORB extension control */
- u32 cpa; /* channel program address */
-} __attribute__ ((packed, aligned(4)));
-
-/*
- * transport-mode operation request block
- */
-struct tm_orb {
- u32 intparm;
- u32 key:4;
- u32 :9;
- u32 b:1;
- u32 :2;
- u32 lpm:8;
- u32 :7;
- u32 x:1;
- u32 tcw;
- u32 prio:8;
- u32 :8;
- u32 rsvpgm:8;
- u32 :8;
- u32 :32;
- u32 :32;
- u32 :32;
- u32 :32;
-} __attribute__ ((packed, aligned(4)));
-
-union orb {
- struct cmd_orb cmd;
- struct tm_orb tm;
-} __attribute__ ((packed, aligned(4)));
+#include "orb.h"
struct io_subchannel_private {
union orb orb; /* operation request block */
struct ccw1 sense_ccw; /* static ccw for sense command */
-} __attribute__ ((aligned(8)));
+ struct ccw_device *cdev;/* pointer to the child ccw device */
+ struct {
+ unsigned int suspend:1; /* allow suspend */
+ unsigned int prefetch:1;/* deny prefetch */
+ unsigned int inter:1; /* suppress intermediate interrupts */
+ } __packed options;
+} __aligned(8);
-#define to_io_private(n) ((struct io_subchannel_private *)n->private)
-#define sch_get_cdev(n) (dev_get_drvdata(&n->dev))
-#define sch_set_cdev(n, c) (dev_set_drvdata(&n->dev, c))
+#define to_io_private(n) ((struct io_subchannel_private *) \
+ dev_get_drvdata(&(n)->dev))
+#define set_io_private(n, p) (dev_set_drvdata(&(n)->dev, p))
+
+static inline struct ccw_device *sch_get_cdev(struct subchannel *sch)
+{
+ struct io_subchannel_private *priv = to_io_private(sch);
+ return priv ? priv->cdev : NULL;
+}
+
+static inline void sch_set_cdev(struct subchannel *sch,
+ struct ccw_device *cdev)
+{
+ struct io_subchannel_private *priv = to_io_private(sch);
+ if (priv)
+ priv->cdev = cdev;
+}
#define MAX_CIWS 8
@@ -191,23 +159,6 @@ struct ccw_device_private {
void *cmb_wait; /* deferred cmb enable/disable */
};
-static inline int ssch(struct subchannel_id schid, union orb *addr)
-{
- register struct subchannel_id reg1 asm("1") = schid;
- int ccode = -EIO;
-
- asm volatile(
- " ssch 0(%2)\n"
- "0: ipm %0\n"
- " srl %0,28\n"
- "1:\n"
- EX_TABLE(0b, 1b)
- : "+d" (ccode)
- : "d" (reg1), "a" (addr), "m" (*addr)
- : "cc", "memory");
- return ccode;
-}
-
static inline int rsch(struct subchannel_id schid)
{
register struct subchannel_id reg1 asm("1") = schid;
@@ -223,21 +174,6 @@ static inline int rsch(struct subchannel_id schid)
return ccode;
}
-static inline int csch(struct subchannel_id schid)
-{
- register struct subchannel_id reg1 asm("1") = schid;
- int ccode;
-
- asm volatile(
- " csch\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (ccode)
- : "d" (reg1)
- : "cc");
- return ccode;
-}
-
static inline int hsch(struct subchannel_id schid)
{
register struct subchannel_id reg1 asm("1") = schid;
diff --git a/drivers/s390/cio/ioasm.h b/drivers/s390/cio/ioasm.h
index fac06155773f..4d80fc67a06b 100644
--- a/drivers/s390/cio/ioasm.h
+++ b/drivers/s390/cio/ioasm.h
@@ -3,6 +3,8 @@
#include <asm/chpid.h>
#include <asm/schid.h>
+#include "orb.h"
+#include "cio.h"
/*
* TPI info structure
@@ -87,6 +89,38 @@ static inline int tsch(struct subchannel_id schid, struct irb *addr)
return ccode;
}
+static inline int ssch(struct subchannel_id schid, union orb *addr)
+{
+ register struct subchannel_id reg1 asm("1") = schid;
+ int ccode = -EIO;
+
+ asm volatile(
+ " ssch 0(%2)\n"
+ "0: ipm %0\n"
+ " srl %0,28\n"
+ "1:\n"
+ EX_TABLE(0b, 1b)
+ : "+d" (ccode)
+ : "d" (reg1), "a" (addr), "m" (*addr)
+ : "cc", "memory");
+ return ccode;
+}
+
+static inline int csch(struct subchannel_id schid)
+{
+ register struct subchannel_id reg1 asm("1") = schid;
+ int ccode;
+
+ asm volatile(
+ " csch\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (ccode)
+ : "d" (reg1)
+ : "cc");
+ return ccode;
+}
+
static inline int tpi(struct tpi_info *addr)
{
int ccode;
diff --git a/drivers/s390/cio/orb.h b/drivers/s390/cio/orb.h
new file mode 100644
index 000000000000..45a9865c2b36
--- /dev/null
+++ b/drivers/s390/cio/orb.h
@@ -0,0 +1,67 @@
+/*
+ * Orb related data structures.
+ *
+ * Copyright IBM Corp. 2007, 2011
+ *
+ * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
+ * Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
+ * Sebastian Ott <sebott@linux.vnet.ibm.com>
+ */
+
+#ifndef S390_ORB_H
+#define S390_ORB_H
+
+/*
+ * Command-mode operation request block
+ */
+struct cmd_orb {
+ u32 intparm; /* interruption parameter */
+ u32 key:4; /* flags, like key, suspend control, etc. */
+ u32 spnd:1; /* suspend control */
+ u32 res1:1; /* reserved */
+ u32 mod:1; /* modification control */
+ u32 sync:1; /* synchronize control */
+ u32 fmt:1; /* format control */
+ u32 pfch:1; /* prefetch control */
+ u32 isic:1; /* initial-status-interruption control */
+ u32 alcc:1; /* address-limit-checking control */
+ u32 ssic:1; /* suppress-suspended-interr. control */
+ u32 res2:1; /* reserved */
+ u32 c64:1; /* IDAW/QDIO 64 bit control */
+ u32 i2k:1; /* IDAW 2/4kB block size control */
+ u32 lpm:8; /* logical path mask */
+ u32 ils:1; /* incorrect length */
+ u32 zero:6; /* reserved zeros */
+ u32 orbx:1; /* ORB extension control */
+ u32 cpa; /* channel program address */
+} __packed __aligned(4);
+
+/*
+ * Transport-mode operation request block
+ */
+struct tm_orb {
+ u32 intparm;
+ u32 key:4;
+ u32:9;
+ u32 b:1;
+ u32:2;
+ u32 lpm:8;
+ u32:7;
+ u32 x:1;
+ u32 tcw;
+ u32 prio:8;
+ u32:8;
+ u32 rsvpgm:8;
+ u32:8;
+ u32:32;
+ u32:32;
+ u32:32;
+ u32:32;
+} __packed __aligned(4);
+
+union orb {
+ struct cmd_orb cmd;
+ struct tm_orb tm;
+} __packed __aligned(4);
+
+#endif /* S390_ORB_H */
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index e9fff2b9bce2..c532ba929ccd 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -476,7 +476,7 @@ static inline void inbound_primed(struct qdio_q *q, int count)
static int get_inbound_buffer_frontier(struct qdio_q *q)
{
int count, stop;
- unsigned char state;
+ unsigned char state = 0;
/*
* Don't check 128 buffers, as otherwise qdio_inbound_q_moved
@@ -643,7 +643,7 @@ void qdio_inbound_processing(unsigned long data)
static int get_outbound_buffer_frontier(struct qdio_q *q)
{
int count, stop;
- unsigned char state;
+ unsigned char state = 0;
if (need_siga_sync(q))
if (((queue_type(q) != QDIO_IQDIO_QFMT) &&
@@ -1508,7 +1508,8 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
if (irq_ptr->state != QDIO_IRQ_STATE_ACTIVE)
return -EBUSY;
-
+ if (!count)
+ return 0;
if (callflags & QDIO_FLAG_SYNC_INPUT)
return handle_inbound(irq_ptr->input_qs[q_nr],
callflags, bufnr, count);
@@ -1648,26 +1649,26 @@ static int __init init_QDIO(void)
{
int rc;
- rc = qdio_setup_init();
+ rc = qdio_debug_init();
if (rc)
return rc;
+ rc = qdio_setup_init();
+ if (rc)
+ goto out_debug;
rc = tiqdio_allocate_memory();
if (rc)
goto out_cache;
- rc = qdio_debug_init();
- if (rc)
- goto out_ti;
rc = tiqdio_register_thinints();
if (rc)
- goto out_debug;
+ goto out_ti;
return 0;
-out_debug:
- qdio_debug_exit();
out_ti:
tiqdio_free_memory();
out_cache:
qdio_setup_exit();
+out_debug:
+ qdio_debug_exit();
return rc;
}
@@ -1675,8 +1676,8 @@ static void __exit exit_QDIO(void)
{
tiqdio_unregister_thinints();
tiqdio_free_memory();
- qdio_debug_exit();
qdio_setup_exit();
+ qdio_debug_exit();
}
module_init(init_QDIO);
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-12 17:56:42 +0300