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-rw-r--r--drivers/s390/cio/airq.c171
-rw-r--r--drivers/s390/cio/airq.h10
-rw-r--r--drivers/s390/cio/blacklist.c2
-rw-r--r--drivers/s390/cio/ccwgroup.c37
-rw-r--r--drivers/s390/cio/chsc.c266
-rw-r--r--drivers/s390/cio/cio.c106
-rw-r--r--drivers/s390/cio/cio.h89
-rw-r--r--drivers/s390/cio/cio_debug.h22
-rw-r--r--drivers/s390/cio/css.c198
-rw-r--r--drivers/s390/cio/css.h78
-rw-r--r--drivers/s390/cio/device.c157
-rw-r--r--drivers/s390/cio/device.h5
-rw-r--r--drivers/s390/cio/device_fsm.c124
-rw-r--r--drivers/s390/cio/device_id.c116
-rw-r--r--drivers/s390/cio/device_ops.c2
-rw-r--r--drivers/s390/cio/device_pgid.c6
-rw-r--r--drivers/s390/cio/device_status.c13
-rw-r--r--drivers/s390/cio/io_sch.h163
-rw-r--r--drivers/s390/cio/ioasm.h66
-rw-r--r--drivers/s390/cio/qdio.c38
-rw-r--r--drivers/s390/cio/qdio.h2
21 files changed, 996 insertions, 675 deletions
diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
index 5287631fbfc..b7a07a86629 100644
--- a/drivers/s390/cio/airq.c
+++ b/drivers/s390/cio/airq.c
@@ -1,12 +1,12 @@
/*
* drivers/s390/cio/airq.c
- * S/390 common I/O routines -- support for adapter interruptions
+ * Support for adapter interruptions
*
- * Copyright (C) 1999-2002 IBM Deutschland Entwicklung GmbH,
- * IBM Corporation
- * Author(s): Ingo Adlung (adlung@de.ibm.com)
- * Cornelia Huck (cornelia.huck@de.ibm.com)
- * Arnd Bergmann (arndb@de.ibm.com)
+ * Copyright IBM Corp. 1999,2007
+ * Author(s): Ingo Adlung <adlung@de.ibm.com>
+ * Cornelia Huck <cornelia.huck@de.ibm.com>
+ * Arnd Bergmann <arndb@de.ibm.com>
+ * Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
*/
#include <linux/init.h>
@@ -14,72 +14,131 @@
#include <linux/slab.h>
#include <linux/rcupdate.h>
+#include <asm/airq.h>
+
+#include "cio.h"
#include "cio_debug.h"
-#include "airq.h"
-static adapter_int_handler_t adapter_handler;
+#define NR_AIRQS 32
+#define NR_AIRQS_PER_WORD sizeof(unsigned long)
+#define NR_AIRQ_WORDS (NR_AIRQS / NR_AIRQS_PER_WORD)
-/*
- * register for adapter interrupts
- *
- * With HiperSockets the zSeries architecture provides for
- * means of adapter interrups, pseudo I/O interrupts that are
- * not tied to an I/O subchannel, but to an adapter. However,
- * it doesn't disclose the info how to enable/disable them, but
- * to recognize them only. Perhaps we should consider them
- * being shared interrupts, and thus build a linked list
- * of adapter handlers ... to be evaluated ...
- */
-int
-s390_register_adapter_interrupt (adapter_int_handler_t handler)
-{
- int ret;
- char dbf_txt[15];
+union indicator_t {
+ unsigned long word[NR_AIRQ_WORDS];
+ unsigned char byte[NR_AIRQS];
+} __attribute__((packed));
- CIO_TRACE_EVENT (4, "rgaint");
+struct airq_t {
+ adapter_int_handler_t handler;
+ void *drv_data;
+};
- if (handler == NULL)
- ret = -EINVAL;
- else
- ret = (cmpxchg(&adapter_handler, NULL, handler) ? -EBUSY : 0);
- if (!ret)
- synchronize_sched(); /* Allow interrupts to complete. */
+static union indicator_t indicators;
+static struct airq_t *airqs[NR_AIRQS];
- sprintf (dbf_txt, "ret:%d", ret);
- CIO_TRACE_EVENT (4, dbf_txt);
+static int register_airq(struct airq_t *airq)
+{
+ int i;
- return ret;
+ for (i = 0; i < NR_AIRQS; i++)
+ if (!cmpxchg(&airqs[i], NULL, airq))
+ return i;
+ return -ENOMEM;
}
-int
-s390_unregister_adapter_interrupt (adapter_int_handler_t handler)
+/**
+ * s390_register_adapter_interrupt() - register adapter interrupt handler
+ * @handler: adapter handler to be registered
+ * @drv_data: driver data passed with each call to the handler
+ *
+ * Returns:
+ * Pointer to the indicator to be used on success
+ * ERR_PTR() if registration failed
+ */
+void *s390_register_adapter_interrupt(adapter_int_handler_t handler,
+ void *drv_data)
{
+ struct airq_t *airq;
+ char dbf_txt[16];
int ret;
- char dbf_txt[15];
- CIO_TRACE_EVENT (4, "urgaint");
-
- if (handler == NULL)
- ret = -EINVAL;
- else {
- adapter_handler = NULL;
- synchronize_sched(); /* Allow interrupts to complete. */
- ret = 0;
+ airq = kmalloc(sizeof(struct airq_t), GFP_KERNEL);
+ if (!airq) {
+ ret = -ENOMEM;
+ goto out;
}
- sprintf (dbf_txt, "ret:%d", ret);
- CIO_TRACE_EVENT (4, dbf_txt);
-
- return ret;
+ airq->handler = handler;
+ airq->drv_data = drv_data;
+ ret = register_airq(airq);
+ if (ret < 0)
+ kfree(airq);
+out:
+ snprintf(dbf_txt, sizeof(dbf_txt), "rairq:%d", ret);
+ CIO_TRACE_EVENT(4, dbf_txt);
+ if (ret < 0)
+ return ERR_PTR(ret);
+ else
+ return &indicators.byte[ret];
}
+EXPORT_SYMBOL(s390_register_adapter_interrupt);
-void
-do_adapter_IO (void)
+/**
+ * s390_unregister_adapter_interrupt - unregister adapter interrupt handler
+ * @ind: indicator for which the handler is to be unregistered
+ */
+void s390_unregister_adapter_interrupt(void *ind)
{
- CIO_TRACE_EVENT (6, "doaio");
+ struct airq_t *airq;
+ char dbf_txt[16];
+ int i;
- if (adapter_handler)
- (*adapter_handler) ();
+ i = (int) ((addr_t) ind) - ((addr_t) &indicators.byte[0]);
+ snprintf(dbf_txt, sizeof(dbf_txt), "urairq:%d", i);
+ CIO_TRACE_EVENT(4, dbf_txt);
+ indicators.byte[i] = 0;
+ airq = xchg(&airqs[i], NULL);
+ /*
+ * Allow interrupts to complete. This will ensure that the airq handle
+ * is no longer referenced by any interrupt handler.
+ */
+ synchronize_sched();
+ kfree(airq);
}
+EXPORT_SYMBOL(s390_unregister_adapter_interrupt);
+
+#define INDICATOR_MASK (0xffUL << ((NR_AIRQS_PER_WORD - 1) * 8))
-EXPORT_SYMBOL (s390_register_adapter_interrupt);
-EXPORT_SYMBOL (s390_unregister_adapter_interrupt);
+void do_adapter_IO(void)
+{
+ int w;
+ int i;
+ unsigned long word;
+ struct airq_t *airq;
+
+ /*
+ * Access indicator array in word-sized chunks to minimize storage
+ * fetch operations.
+ */
+ for (w = 0; w < NR_AIRQ_WORDS; w++) {
+ word = indicators.word[w];
+ i = w * NR_AIRQS_PER_WORD;
+ /*
+ * Check bytes within word for active indicators.
+ */
+ while (word) {
+ if (word & INDICATOR_MASK) {
+ airq = airqs[i];
+ if (likely(airq))
+ airq->handler(&indicators.byte[i],
+ airq->drv_data);
+ else
+ /*
+ * Reset ill-behaved indicator.
+ */
+ indicators.byte[i] = 0;
+ }
+ word <<= 8;
+ i++;
+ }
+ }
+}
diff --git a/drivers/s390/cio/airq.h b/drivers/s390/cio/airq.h
deleted file mode 100644
index 7d6be3fdcd6..00000000000
--- a/drivers/s390/cio/airq.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef S390_AINTERRUPT_H
-#define S390_AINTERRUPT_H
-
-typedef int (*adapter_int_handler_t)(void);
-
-extern int s390_register_adapter_interrupt(adapter_int_handler_t handler);
-extern int s390_unregister_adapter_interrupt(adapter_int_handler_t handler);
-extern void do_adapter_IO (void);
-
-#endif
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index bd5f16f80bf..e8597ec9224 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -348,7 +348,7 @@ cio_ignore_write(struct file *file, const char __user *user_buf,
return user_len;
}
-static struct seq_operations cio_ignore_proc_seq_ops = {
+static const struct seq_operations cio_ignore_proc_seq_ops = {
.start = cio_ignore_proc_seq_start,
.stop = cio_ignore_proc_seq_stop,
.next = cio_ignore_proc_seq_next,
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 5baa517c3b6..03914fa8117 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -35,8 +35,8 @@ ccwgroup_bus_match (struct device * dev, struct device_driver * drv)
struct ccwgroup_device *gdev;
struct ccwgroup_driver *gdrv;
- gdev = container_of(dev, struct ccwgroup_device, dev);
- gdrv = container_of(drv, struct ccwgroup_driver, driver);
+ gdev = to_ccwgroupdev(dev);
+ gdrv = to_ccwgroupdrv(drv);
if (gdev->creator_id == gdrv->driver_id)
return 1;
@@ -75,8 +75,10 @@ static void ccwgroup_ungroup_callback(struct device *dev)
struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
mutex_lock(&gdev->reg_mutex);
- __ccwgroup_remove_symlinks(gdev);
- device_unregister(dev);
+ if (device_is_registered(&gdev->dev)) {
+ __ccwgroup_remove_symlinks(gdev);
+ device_unregister(dev);
+ }
mutex_unlock(&gdev->reg_mutex);
}
@@ -111,7 +113,7 @@ ccwgroup_release (struct device *dev)
gdev = to_ccwgroupdev(dev);
for (i = 0; i < gdev->count; i++) {
- gdev->cdev[i]->dev.driver_data = NULL;
+ dev_set_drvdata(&gdev->cdev[i]->dev, NULL);
put_device(&gdev->cdev[i]->dev);
}
kfree(gdev);
@@ -196,11 +198,11 @@ int ccwgroup_create(struct device *root, unsigned int creator_id,
goto error;
}
/* Don't allow a device to belong to more than one group. */
- if (gdev->cdev[i]->dev.driver_data) {
+ if (dev_get_drvdata(&gdev->cdev[i]->dev)) {
rc = -EINVAL;
goto error;
}
- gdev->cdev[i]->dev.driver_data = gdev;
+ dev_set_drvdata(&gdev->cdev[i]->dev, gdev);
}
gdev->creator_id = creator_id;
@@ -234,8 +236,8 @@ int ccwgroup_create(struct device *root, unsigned int creator_id,
error:
for (i = 0; i < argc; i++)
if (gdev->cdev[i]) {
- if (gdev->cdev[i]->dev.driver_data == gdev)
- gdev->cdev[i]->dev.driver_data = NULL;
+ if (dev_get_drvdata(&gdev->cdev[i]->dev) == gdev)
+ dev_set_drvdata(&gdev->cdev[i]->dev, NULL);
put_device(&gdev->cdev[i]->dev);
}
mutex_unlock(&gdev->reg_mutex);
@@ -389,12 +391,24 @@ ccwgroup_remove (struct device *dev)
return 0;
}
+static void ccwgroup_shutdown(struct device *dev)
+{
+ struct ccwgroup_device *gdev;
+ struct ccwgroup_driver *gdrv;
+
+ gdev = to_ccwgroupdev(dev);
+ gdrv = to_ccwgroupdrv(dev->driver);
+ if (gdrv && gdrv->shutdown)
+ gdrv->shutdown(gdev);
+}
+
static struct bus_type ccwgroup_bus_type = {
.name = "ccwgroup",
.match = ccwgroup_bus_match,
.uevent = ccwgroup_uevent,
.probe = ccwgroup_probe,
.remove = ccwgroup_remove,
+ .shutdown = ccwgroup_shutdown,
};
/**
@@ -408,6 +422,7 @@ 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);
}
@@ -463,8 +478,8 @@ __ccwgroup_get_gdev_by_cdev(struct ccw_device *cdev)
{
struct ccwgroup_device *gdev;
- if (cdev->dev.driver_data) {
- gdev = (struct ccwgroup_device *)cdev->dev.driver_data;
+ gdev = dev_get_drvdata(&cdev->dev);
+ if (gdev) {
if (get_device(&gdev->dev)) {
mutex_lock(&gdev->reg_mutex);
if (device_is_registered(&gdev->dev))
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 597c0c76a2a..007aaeb4f53 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -26,6 +26,25 @@
static void *sei_page;
+static int chsc_error_from_response(int response)
+{
+ switch (response) {
+ case 0x0001:
+ return 0;
+ case 0x0002:
+ case 0x0003:
+ case 0x0006:
+ case 0x0007:
+ case 0x0008:
+ case 0x000a:
+ return -EINVAL;
+ case 0x0004:
+ return -EOPNOTSUPP;
+ default:
+ return -EIO;
+ }
+}
+
struct chsc_ssd_area {
struct chsc_header request;
u16 :10;
@@ -75,11 +94,11 @@ int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd)
ret = (ccode == 3) ? -ENODEV : -EBUSY;
goto out_free;
}
- if (ssd_area->response.code != 0x0001) {
+ ret = chsc_error_from_response(ssd_area->response.code);
+ if (ret != 0) {
CIO_MSG_EVENT(2, "chsc: ssd failed for 0.%x.%04x (rc=%04x)\n",
schid.ssid, schid.sch_no,
ssd_area->response.code);
- ret = -EIO;
goto out_free;
}
if (!ssd_area->sch_valid) {
@@ -89,7 +108,8 @@ int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd)
/* Copy data */
ret = 0;
memset(ssd, 0, sizeof(struct chsc_ssd_info));
- if ((ssd_area->st != 0) && (ssd_area->st != 2))
+ if ((ssd_area->st != SUBCHANNEL_TYPE_IO) &&
+ (ssd_area->st != SUBCHANNEL_TYPE_MSG))
goto out_free;
ssd->path_mask = ssd_area->path_mask;
ssd->fla_valid_mask = ssd_area->fla_valid_mask;
@@ -132,20 +152,16 @@ static void terminate_internal_io(struct subchannel *sch)
device_set_intretry(sch);
/* Call handler. */
if (sch->driver && sch->driver->termination)
- sch->driver->termination(&sch->dev);
+ sch->driver->termination(sch);
}
-static int
-s390_subchannel_remove_chpid(struct device *dev, void *data)
+static int s390_subchannel_remove_chpid(struct subchannel *sch, void *data)
{
int j;
int mask;
- struct subchannel *sch;
- struct chp_id *chpid;
+ struct chp_id *chpid = data;
struct schib schib;
- sch = to_subchannel(dev);
- chpid = data;
for (j = 0; j < 8; j++) {
mask = 0x80 >> j;
if ((sch->schib.pmcw.pim & mask) &&
@@ -158,7 +174,7 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
spin_lock_irq(sch->lock);
stsch(sch->schid, &schib);
- if (!schib.pmcw.dnv)
+ if (!css_sch_is_valid(&schib))
goto out_unreg;
memcpy(&sch->schib, &schib, sizeof(struct schib));
/* Check for single path devices. */
@@ -172,12 +188,12 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
terminate_internal_io(sch);
/* Re-start path verification. */
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
}
} else {
/* trigger path verification. */
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
else if (sch->lpm == mask)
goto out_unreg;
}
@@ -201,12 +217,10 @@ void chsc_chp_offline(struct chp_id chpid)
if (chp_get_status(chpid) <= 0)
return;
- bus_for_each_dev(&css_bus_type, NULL, &chpid,
- s390_subchannel_remove_chpid);
+ for_each_subchannel_staged(s390_subchannel_remove_chpid, NULL, &chpid);
}
-static int
-s390_process_res_acc_new_sch(struct subchannel_id schid)
+static int s390_process_res_acc_new_sch(struct subchannel_id schid, void *data)
{
struct schib schib;
/*
@@ -252,18 +266,10 @@ static int get_res_chpid_mask(struct chsc_ssd_info *ssd,
return 0;
}
-static int
-__s390_process_res_acc(struct subchannel_id schid, void *data)
+static int __s390_process_res_acc(struct subchannel *sch, void *data)
{
int chp_mask, old_lpm;
- struct res_acc_data *res_data;
- struct subchannel *sch;
-
- res_data = data;
- sch = get_subchannel_by_schid(schid);
- if (!sch)
- /* Check if a subchannel is newly available. */
- return s390_process_res_acc_new_sch(schid);
+ struct res_acc_data *res_data = data;
spin_lock_irq(sch->lock);
chp_mask = get_res_chpid_mask(&sch->ssd_info, res_data);
@@ -279,10 +285,10 @@ __s390_process_res_acc(struct subchannel_id schid, void *data)
if (!old_lpm && sch->lpm)
device_trigger_reprobe(sch);
else if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
out:
spin_unlock_irq(sch->lock);
- put_device(&sch->dev);
+
return 0;
}
@@ -305,7 +311,8 @@ static void s390_process_res_acc (struct res_acc_data *res_data)
* The more information we have (info), the less scanning
* will we have to do.
*/
- for_each_subchannel(__s390_process_res_acc, res_data);
+ for_each_subchannel_staged(__s390_process_res_acc,
+ s390_process_res_acc_new_sch, res_data);
}
static int
@@ -499,8 +506,7 @@ void chsc_process_crw(void)
} while (sei_area->flags & 0x80);
}
-static int
-__chp_add_new_sch(struct subchannel_id schid)
+static int __chp_add_new_sch(struct subchannel_id schid, void *data)
{
struct schib schib;
@@ -514,45 +520,37 @@ __chp_add_new_sch(struct subchannel_id schid)
}
-static int
-__chp_add(struct subchannel_id schid, void *data)
+static int __chp_add(struct subchannel *sch, void *data)
{
int i, mask;
- struct chp_id *chpid;
- struct subchannel *sch;
-
- chpid = data;
- sch = get_subchannel_by_schid(schid);
- if (!sch)
- /* Check if the subchannel is now available. */
- return __chp_add_new_sch(schid);
+ struct chp_id *chpid = data;
+
spin_lock_irq(sch->lock);
for (i=0; i<8; i++) {
mask = 0x80 >> i;
if ((sch->schib.pmcw.pim & mask) &&
- (sch->schib.pmcw.chpid[i] == chpid->id)) {
- if (stsch(sch->schid, &sch->schib) != 0) {
- /* Endgame. */
- spin_unlock_irq(sch->lock);
- return -ENXIO;
- }
+ (sch->schib.pmcw.chpid[i] == chpid->id))
break;
- }
}
if (i==8) {
spin_unlock_irq(sch->lock);
return 0;
}
+ if (stsch(sch->schid, &sch->schib)) {
+ spin_unlock_irq(sch->lock);
+ css_schedule_eval(sch->schid);
+ return 0;
+ }
sch->lpm = ((sch->schib.pmcw.pim &
sch->schib.pmcw.pam &
sch->schib.pmcw.pom)
| mask) & sch->opm;
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
spin_unlock_irq(sch->lock);
- put_device(&sch->dev);
+
return 0;
}
@@ -564,7 +562,8 @@ void chsc_chp_online(struct chp_id chpid)
CIO_TRACE_EVENT(2, dbf_txt);
if (chp_get_status(chpid) != 0)
- for_each_subchannel(__chp_add, &chpid);
+ for_each_subchannel_staged(__chp_add, __chp_add_new_sch,
+ &chpid);
}
static void __s390_subchannel_vary_chpid(struct subchannel *sch,
@@ -589,7 +588,7 @@ static void __s390_subchannel_vary_chpid(struct subchannel *sch,
if (!old_lpm)
device_trigger_reprobe(sch);
else if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
break;
}
sch->opm &= ~mask;
@@ -603,37 +602,29 @@ static void __s390_subchannel_vary_chpid(struct subchannel *sch,
terminate_internal_io(sch);
/* Re-start path verification. */
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
}
} else if (!sch->lpm) {
if (device_trigger_verify(sch) != 0)
css_schedule_eval(sch->schid);
} else if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
break;
}
spin_unlock_irqrestore(sch->lock, flags);
}
-static int s390_subchannel_vary_chpid_off(struct device *dev, void *data)
+static int s390_subchannel_vary_chpid_off(struct subchannel *sch, void *data)
{
- struct subchannel *sch;
- struct chp_id *chpid;
-
- sch = to_subchannel(dev);
- chpid = data;
+ struct chp_id *chpid = data;
__s390_subchannel_vary_chpid(sch, *chpid, 0);
return 0;
}
-static int s390_subchannel_vary_chpid_on(struct device *dev, void *data)
+static int s390_subchannel_vary_chpid_on(struct subchannel *sch, void *data)
{
- struct subchannel *sch;
- struct chp_id *chpid;
-
- sch = to_subchannel(dev);
- chpid = data;
+ struct chp_id *chpid = data;
__s390_subchannel_vary_chpid(sch, *chpid, 1);
return 0;
@@ -643,13 +634,7 @@ static int
__s390_vary_chpid_on(struct subchannel_id schid, void *data)
{
struct schib schib;
- struct subchannel *sch;
- sch = get_subchannel_by_schid(schid);
- if (sch) {
- put_device(&sch->dev);
- return 0;
- }
if (stsch_err(schid, &schib))
/* We're through */
return -ENXIO;
@@ -669,12 +654,13 @@ int chsc_chp_vary(struct chp_id chpid, int on)
* Redo PathVerification on the devices the chpid connects to
*/
- bus_for_each_dev(&css_bus_type, NULL, &chpid, on ?
- s390_subchannel_vary_chpid_on :
- s390_subchannel_vary_chpid_off);
if (on)
- /* Scan for new devices on varied on path. */
- for_each_subchannel(__s390_vary_chpid_on, NULL);
+ for_each_subchannel_staged(s390_subchannel_vary_chpid_on,
+ __s390_vary_chpid_on, &chpid);
+ else
+ for_each_subchannel_staged(s390_subchannel_vary_chpid_off,
+ NULL, &chpid);
+
return 0;
}
@@ -750,36 +736,15 @@ __chsc_do_secm(struct channel_subsystem *css, int enable, void *page)
return (ccode == 3) ? -ENODEV : -EBUSY;
switch (secm_area->response.code) {
- case 0x0001: /* Success. */
- ret = 0;
- break;
- case 0x0003: /* Invalid block. */
- case 0x0007: /* Invalid format. */
- case 0x0008: /* Other invalid block. */
- CIO_CRW_EVENT(2, "Error in chsc request block!\n");
+ case 0x0102:
+ case 0x0103:
ret = -EINVAL;
- break;
- case 0x0004: /* Command not provided in model. */
- CIO_CRW_EVENT(2, "Model does not provide secm\n");
- ret = -EOPNOTSUPP;
- break;
- case 0x0102: /* cub adresses incorrect */
- CIO_CRW_EVENT(2, "Invalid addresses in chsc request block\n");
- ret = -EINVAL;
- break;
- case 0x0103: /* key error */
- CIO_CRW_EVENT(2, "Access key error in secm\n");
- ret = -EINVAL;
- break;
- case 0x0105: /* error while starting */
- CIO_CRW_EVENT(2, "Error while starting channel measurement\n");
- ret = -EIO;
- break;
default:
- CIO_CRW_EVENT(2, "Unknown CHSC response %d\n",
- secm_area->response.code);
- ret = -EIO;
+ ret = chsc_error_from_response(secm_area->response.code);
}
+ if (ret != 0)
+ CIO_CRW_EVENT(2, "chsc: secm failed (rc=%04x)\n",
+ secm_area->response.code);
return ret;
}
@@ -860,27 +825,14 @@ int chsc_determine_channel_path_description(struct chp_id chpid,
goto out;
}
- switch (scpd_area->response.code) {
- case 0x0001: /* Success. */
+ ret = chsc_error_from_response(scpd_area->response.code);
+ if (ret == 0)
+ /* Success. */
memcpy(desc, &scpd_area->desc,
sizeof(struct channel_path_desc));
- ret = 0;
- break;
- case 0x0003: /* Invalid block. */
- case 0x0007: /* Invalid format. */
- case 0x0008: /* Other invalid block. */
- CIO_CRW_EVENT(2, "Error in chsc request block!\n");
- ret = -EINVAL;
- break;
- case 0x0004: /* Command not provided in model. */
- CIO_CRW_EVENT(2, "Model does not provide scpd\n");
- ret = -EOPNOTSUPP;
- break;
- default:
- CIO_CRW_EVENT(2, "Unknown CHSC response %d\n",
+ else
+ CIO_CRW_EVENT(2, "chsc: scpd failed (rc=%04x)\n",
scpd_area->response.code);
- ret = -EIO;
- }
out:
free_page((unsigned long)scpd_area);
return ret;
@@ -956,8 +908,9 @@ int chsc_get_channel_measurement_chars(struct channel_path *chp)
goto out;
}
- switch (scmc_area->response.code) {
- case 0x0001: /* Success. */
+ ret = chsc_error_from_response(scmc_area->response.code);
+ if (ret == 0) {
+ /* Success. */
if (!scmc_area->not_valid) {
chp->cmg = scmc_area->cmg;
chp->shared = scmc_area->shared;
@@ -968,22 +921,9 @@ int chsc_get_channel_measurement_chars(struct channel_path *chp)
chp->cmg = -1;
chp->shared = -1;
}
- ret = 0;
- break;
- case 0x0003: /* Invalid block. */
- case 0x0007: /* Invalid format. */
- case 0x0008: /* Invalid bit combination. */
- CIO_CRW_EVENT(2, "Error in chsc request block!\n");
- ret = -EINVAL;
- break;
- case 0x0004: /* Command not provided. */
- CIO_CRW_EVENT(2, "Model does not provide scmc\n");
- ret = -EOPNOTSUPP;
- break;
- default:
- CIO_CRW_EVENT(2, "Unknown CHSC response %d\n",
+ } else {
+ CIO_CRW_EVENT(2, "chsc: scmc failed (rc=%04x)\n",
scmc_area->response.code);
- ret = -EIO;
}
out:
free_page((unsigned long)scmc_area);
@@ -1035,21 +975,17 @@ chsc_enable_facility(int operation_code)
ret = (ret == 3) ? -ENODEV : -EBUSY;
goto out;
}
+
switch (sda_area->response.code) {
- case 0x0001: /* everything ok */
- ret = 0;
- break;
- case 0x0003: /* invalid request block */
- case 0x0007:
- ret = -EINVAL;
- break;
- case 0x0004: /* command not provided */
- case 0x0101: /* facility not provided */
+ case 0x0101:
ret = -EOPNOTSUPP;
break;
- default: /* something went wrong */
- ret = -EIO;
+ default:
+ ret = chsc_error_from_response(sda_area->response.code);
}
+ if (ret != 0)
+ CIO_CRW_EVENT(2, "chsc: sda (oc=%x) failed (rc=%04x)\n",
+ operation_code, sda_area->response.code);
out:
free_page((unsigned long)sda_area);
return ret;
@@ -1074,33 +1010,27 @@ chsc_determine_css_characteristics(void)
} __attribute__ ((packed)) *scsc_area;
scsc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
- if (!scsc_area) {
- CIO_MSG_EVENT(0, "Was not able to determine available"
- "CHSCs due to no memory.\n");
+ if (!scsc_area)
return -ENOMEM;
- }
scsc_area->request.length = 0x0010;
scsc_area->request.code = 0x0010;
result = chsc(scsc_area);
if (result) {
- CIO_MSG_EVENT(0, "Was not able to determine available CHSCs, "
- "cc=%i.\n", result);
- result = -EIO;
+ result = (result == 3) ? -ENODEV : -EBUSY;
goto exit;
}
- if (scsc_area->response.code != 1) {
- CIO_MSG_EVENT(0, "Was not able to determine "
- "available CHSCs.\n");
- result = -EIO;
- goto exit;
- }
- memcpy(&css_general_characteristics, scsc_area->general_char,
- sizeof(css_general_characteristics));
- memcpy(&css_chsc_characteristics, scsc_area->chsc_char,
- sizeof(css_chsc_characteristics));
+ result = chsc_error_from_response(scsc_area->response.code);
+ if (result == 0) {
+ memcpy(&css_general_characteristics, scsc_area->general_char,
+ sizeof(css_general_characteristics));
+ memcpy(&css_chsc_characteristics, scsc_area->chsc_char,
+ sizeof(css_chsc_characteristics));
+ } else
+ CIO_CRW_EVENT(2, "chsc: scsc failed (rc=%04x)\n",
+ scsc_area->response.code);
exit:
free_page ((unsigned long) scsc_area);
return result;
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 46905345159..60590a12d52 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -23,11 +23,12 @@
#include <asm/reset.h>
#include <asm/ipl.h>
#include <asm/chpid.h>
-#include "airq.h"
+#include <asm/airq.h>
#include "cio.h"
#include "css.h"
#include "chsc.h"
#include "ioasm.h"
+#include "io_sch.h"
#include "blacklist.h"
#include "cio_debug.h"
#include "chp.h"
@@ -56,39 +57,37 @@ __setup ("cio_msg=", cio_setup);
/*
* Function: cio_debug_init
- * Initializes three debug logs (under /proc/s390dbf) for common I/O:
- * - cio_msg logs the messages which are printk'ed when CONFIG_DEBUG_IO is on
+ * Initializes three debug logs for common I/O:
+ * - cio_msg logs generic cio messages
* - cio_trace logs the calling of different functions
- * - cio_crw logs the messages which are printk'ed when CONFIG_DEBUG_CRW is on
- * debug levels depend on CONFIG_DEBUG_IO resp. CONFIG_DEBUG_CRW
+ * - cio_crw logs machine check related cio messages
*/
-static int __init
-cio_debug_init (void)
+static int __init cio_debug_init(void)
{
- cio_debug_msg_id = debug_register ("cio_msg", 16, 4, 16*sizeof (long));
+ cio_debug_msg_id = debug_register("cio_msg", 16, 1, 16 * sizeof(long));
if (!cio_debug_msg_id)
goto out_unregister;
- debug_register_view (cio_debug_msg_id, &debug_sprintf_view);
- debug_set_level (cio_debug_msg_id, 2);
- cio_debug_trace_id = debug_register ("cio_trace", 16, 4, 16);
+ debug_register_view(cio_debug_msg_id, &debug_sprintf_view);
+ debug_set_level(cio_debug_msg_id, 2);
+ cio_debug_trace_id = debug_register("cio_trace", 16, 1, 16);
if (!cio_debug_trace_id)
goto out_unregister;
- debug_register_view (cio_debug_trace_id, &debug_hex_ascii_view);
- debug_set_level (cio_debug_trace_id, 2);
- cio_debug_crw_id = debug_register ("cio_crw", 4, 4, 16*sizeof (long));
+ debug_register_view(cio_debug_trace_id, &debug_hex_ascii_view);
+ debug_set_level(cio_debug_trace_id, 2);
+ cio_debug_crw_id = debug_register("cio_crw", 16, 1, 16 * sizeof(long));
if (!cio_debug_crw_id)
goto out_unregister;
- debug_register_view (cio_debug_crw_id, &debug_sprintf_view);
- debug_set_level (cio_debug_crw_id, 2);
+ debug_register_view(cio_debug_crw_id, &debug_sprintf_view);
+ debug_set_level(cio_debug_crw_id, 4);
return 0;
out_unregister:
if (cio_debug_msg_id)
- debug_unregister (cio_debug_msg_id);
+ debug_unregister(cio_debug_msg_id);
if (cio_debug_trace_id)
- debug_unregister (cio_debug_trace_id);
+ debug_unregister(cio_debug_trace_id);
if (cio_debug_crw_id)
- debug_unregister (cio_debug_crw_id);
+ debug_unregister(cio_debug_crw_id);
printk(KERN_WARNING"cio: could not initialize debugging\n");
return -1;
}
@@ -147,7 +146,7 @@ cio_tpi(void)
spin_lock(sch->lock);
memcpy (&sch->schib.scsw, &irb->scsw, sizeof (struct scsw));
if (sch->driver && sch->driver->irq)
- sch->driver->irq(&sch->dev);
+ sch->driver->irq(sch);
spin_unlock(sch->lock);
irq_exit ();
_local_bh_enable();
@@ -184,33 +183,35 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */
{
char dbf_txt[15];
int ccode;
+ struct orb *orb;
- CIO_TRACE_EVENT (4, "stIO");
- CIO_TRACE_EVENT (4, sch->dev.bus_id);
+ CIO_TRACE_EVENT(4, "stIO");
+ CIO_TRACE_EVENT(4, sch->dev.bus_id);
+ orb = &to_io_private(sch)->orb;
/* sch is always under 2G. */
- sch->orb.intparm = (__u32)(unsigned long)sch;
- sch->orb.fmt = 1;
+ orb->intparm = (u32)(addr_t)sch;
+ orb->fmt = 1;
- sch->orb.pfch = sch->options.prefetch == 0;
- sch->orb.spnd = sch->options.suspend;
- sch->orb.ssic = sch->options.suspend && sch->options.inter;
- sch->orb.lpm = (lpm != 0) ? lpm : sch->lpm;
+ orb->pfch = sch->options.prefetch == 0;
+ orb->spnd = sch->options.suspend;
+ orb->ssic = sch->options.suspend && sch->options.inter;
+ orb->lpm = (lpm != 0) ? lpm : sch->lpm;
#ifdef CONFIG_64BIT
/*
* for 64 bit we always support 64 bit IDAWs with 4k page size only
*/
- sch->orb.c64 = 1;
- sch->orb.i2k = 0;
+ orb->c64 = 1;
+ orb->i2k = 0;
#endif
- sch->orb.key = key >> 4;
+ orb->key = key >> 4;
/* issue "Start Subchannel" */
- sch->orb.cpa = (__u32) __pa (cpa);
- ccode = ssch (sch->schid, &sch->orb);
+ orb->cpa = (__u32) __pa(cpa);
+ ccode = ssch(sch->schid, orb);
/* process condition code */
- sprintf (dbf_txt, "ccode:%d", ccode);
- CIO_TRACE_EVENT (4, dbf_txt);
+ sprintf(dbf_txt, "ccode:%d", ccode);
+ CIO_TRACE_EVENT(4, dbf_txt);
switch (ccode) {
case 0:
@@ -405,8 +406,8 @@ cio_modify (struct subchannel *sch)
/*
* Enable subchannel.
*/
-int
-cio_enable_subchannel (struct subchannel *sch, unsigned int isc)
+int cio_enable_subchannel(struct subchannel *sch, unsigned int isc,
+ u32 intparm)
{
char dbf_txt[15];
int ccode;
@@ -425,7 +426,7 @@ cio_enable_subchannel (struct subchannel *sch, unsigned int isc)
for (retry = 5, ret = 0; retry > 0; retry--) {
sch->schib.pmcw.ena = 1;
sch->schib.pmcw.isc = isc;
- sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
+ sch->schib.pmcw.intparm = intparm;
ret = cio_modify(sch);
if (ret == -ENODEV)
break;
@@ -567,7 +568,7 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
*/
if (sch->st != 0) {
CIO_DEBUG(KERN_INFO, 0,
- "cio: Subchannel 0.%x.%04x reports "
+ "Subchannel 0.%x.%04x reports "
"non-I/O subchannel type %04X\n",
sch->schid.ssid, sch->schid.sch_no, sch->st);
/* We stop here for non-io subchannels. */
@@ -576,11 +577,11 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
}
/* Initialization for io subchannels. */
- if (!sch->schib.pmcw.dnv) {
- /* io subchannel but device number is invalid. */
+ if (!css_sch_is_valid(&sch->schib)) {
err = -ENODEV;
goto out;
}
+
/* Devno is valid. */
if (is_blacklisted (sch->schid.ssid, sch->schib.pmcw.dev)) {
/*
@@ -600,7 +601,7 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
sch->lpm = sch->schib.pmcw.pam & sch->opm;
CIO_DEBUG(KERN_INFO, 0,
- "cio: Detected device %04x on subchannel 0.%x.%04X"
+ "Detected device %04x on subchannel 0.%x.%04X"
" - PIM = %02X, PAM = %02X, POM = %02X\n",
sch->schib.pmcw.dev, sch->schid.ssid,
sch->schid.sch_no, sch->schib.pmcw.pim,
@@ -680,7 +681,7 @@ do_IRQ (struct pt_regs *regs)
sizeof (irb->scsw));
/* Call interrupt handler if there is one. */
if (sch->driver && sch->driver->irq)
- sch->driver->irq(&sch->dev);
+ sch->driver->irq(sch);
}
if (sch)
spin_unlock(sch->lock);
@@ -698,8 +699,14 @@ do_IRQ (struct pt_regs *regs)
#ifdef CONFIG_CCW_CONSOLE
static struct subchannel console_subchannel;
+static struct io_subchannel_private console_priv;
static int console_subchannel_in_use;
+void *cio_get_console_priv(void)
+{
+ return &console_priv;
+}
+
/*
* busy wait for the next interrupt on the console
*/
@@ -738,9 +745,9 @@ cio_test_for_console(struct subchannel_id schid, void *data)
{
if (stsch_err(schid, &console_subchannel.schib) != 0)
return -ENXIO;
- if (console_subchannel.schib.pmcw.dnv &&
- console_subchannel.schib.pmcw.dev ==
- console_devno) {
+ if ((console_subchannel.schib.pmcw.st == SUBCHANNEL_TYPE_IO) &&
+ console_subchannel.schib.pmcw.dnv &&
+ (console_subchannel.schib.pmcw.dev == console_devno)) {
console_irq = schid.sch_no;
return 1; /* found */
}
@@ -758,6 +765,7 @@ cio_get_console_sch_no(void)
/* VM provided us with the irq number of the console. */
schid.sch_no = console_irq;
if (stsch(schid, &console_subchannel.schib) != 0 ||
+ (console_subchannel.schib.pmcw.st != SUBCHANNEL_TYPE_IO) ||
!console_subchannel.schib.pmcw.dnv)
return -1;
console_devno = console_subchannel.schib.pmcw.dev;
@@ -804,7 +812,7 @@ cio_probe_console(void)
ctl_set_bit(6, 24);
console_subchannel.schib.pmcw.isc = 7;
console_subchannel.schib.pmcw.intparm =
- (__u32)(unsigned long)&console_subchannel;
+ (u32)(addr_t)&console_subchannel;
ret = cio_modify(&console_subchannel);
if (ret) {
console_subchannel_in_use = 0;
@@ -1022,7 +1030,7 @@ static int __reipl_subchannel_match(struct subchannel_id schid, void *data)
if (stsch_reset(schid, &schib))
return -ENXIO;
- if (schib.pmcw.dnv &&
+ if ((schib.pmcw.st == SUBCHANNEL_TYPE_IO) && schib.pmcw.dnv &&
(schib.pmcw.dev == match_id->devid.devno) &&
(schid.ssid == match_id->devid.ssid)) {
match_id->schid = schid;
@@ -1068,6 +1076,8 @@ int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo)
return -ENODEV;
if (stsch(schid, &schib))
return -ENODEV;
+ if (schib.pmcw.st != SUBCHANNEL_TYPE_IO)
+ return -ENODEV;
if (!schib.pmcw.dnv)
return -ENODEV;
iplinfo->devno = schib.pmcw.dev;
diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index 7446c39951a..52afa4c784d 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -11,32 +11,32 @@
* path management control word
*/
struct pmcw {
- __u32 intparm; /* interruption parameter */
- __u32 qf : 1; /* qdio facility */
- __u32 res0 : 1; /* reserved zeros */
- __u32 isc : 3; /* interruption sublass */
- __u32 res5 : 3; /* reserved zeros */
- __u32 ena : 1; /* enabled */
- __u32 lm : 2; /* limit mode */
- __u32 mme : 2; /* measurement-mode enable */
- __u32 mp : 1; /* multipath mode */
- __u32 tf : 1; /* timing facility */
- __u32 dnv : 1; /* device number valid */
- __u32 dev : 16; /* device number */
- __u8 lpm; /* logical path mask */
- __u8 pnom; /* path not operational mask */
- __u8 lpum; /* last path used mask */
- __u8 pim; /* path installed mask */
- __u16 mbi; /* measurement-block index */
- __u8 pom; /* path operational mask */
- __u8 pam; /* path available mask */
- __u8 chpid[8]; /* CHPID 0-7 (if available) */
- __u32 unused1 : 8; /* reserved zeros */
- __u32 st : 3; /* subchannel type */
- __u32 unused2 : 18; /* reserved zeros */
- __u32 mbfc : 1; /* measurement block format control */
- __u32 xmwme : 1; /* extended measurement word mode enable */
- __u32 csense : 1; /* concurrent sense; can be enabled ...*/
+ u32 intparm; /* interruption parameter */
+ u32 qf : 1; /* qdio facility */
+ u32 res0 : 1; /* reserved zeros */
+ u32 isc : 3; /* interruption sublass */
+ u32 res5 : 3; /* reserved zeros */
+ u32 ena : 1; /* enabled */
+ u32 lm : 2; /* limit mode */
+ u32 mme : 2; /* measurement-mode enable */
+ u32 mp : 1; /* multipath mode */
+ u32 tf : 1; /* timing facility */
+ u32 dnv : 1; /* device number valid */
+ u32 dev : 16; /* device number */
+ u8 lpm; /* logical path mask */
+ u8 pnom; /* path not operational mask */
+ u8 lpum; /* last path used mask */
+ u8 pim; /* path installed mask */
+ u16 mbi; /* measurement-block index */
+ u8 pom; /* path operational mask */
+ u8 pam; /* path available mask */
+ u8 chpid[8]; /* CHPID 0-7 (if available) */
+ u32 unused1 : 8; /* reserved zeros */
+ u32 st : 3; /* subchannel type */
+ u32 unused2 : 18; /* reserved zeros */
+ u32 mbfc : 1; /* measurement block format control */
+ u32 xmwme : 1; /* extended measurement word mode enable */
+ u32 csense : 1; /* concurrent sense; can be enabled ...*/
/* ... per MSCH, however, if facility */
/* ... is not installed, this results */
/* ... in an operand exception. */
@@ -52,31 +52,6 @@ struct schib {
__u8 mda[4]; /* model dependent area */
} __attribute__ ((packed,aligned(4)));
-/*
- * operation request block
- */
-struct 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)));
-
/* subchannel data structure used by I/O subroutines */
struct subchannel {
struct subchannel_id schid;
@@ -85,7 +60,7 @@ struct subchannel {
enum {
SUBCHANNEL_TYPE_IO = 0,
SUBCHANNEL_TYPE_CHSC = 1,
- SUBCHANNEL_TYPE_MESSAGE = 2,
+ SUBCHANNEL_TYPE_MSG = 2,
SUBCHANNEL_TYPE_ADM = 3,
} st; /* subchannel type */
@@ -99,11 +74,10 @@ struct subchannel {
__u8 lpm; /* logical path mask */
__u8 opm; /* operational path mask */
struct schib schib; /* subchannel information block */
- struct orb orb; /* operation request block */
- struct ccw1 sense_ccw; /* static ccw for sense command */
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 */
} __attribute__ ((aligned(8)));
#define IO_INTERRUPT_TYPE 0 /* I/O interrupt type */
@@ -111,7 +85,7 @@ struct subchannel {
#define to_subchannel(n) container_of(n, struct subchannel, dev)
extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id);
-extern int cio_enable_subchannel (struct subchannel *, unsigned int);
+extern int cio_enable_subchannel(struct subchannel *, unsigned int, u32);
extern int cio_disable_subchannel (struct subchannel *);
extern int cio_cancel (struct subchannel *);
extern int cio_clear (struct subchannel *);
@@ -125,6 +99,7 @@ extern int cio_get_options (struct subchannel *);
extern int cio_modify (struct subchannel *);
int cio_create_sch_lock(struct subchannel *);
+void do_adapter_IO(void);
/* Use with care. */
#ifdef CONFIG_CCW_CONSOLE
@@ -133,10 +108,12 @@ extern void cio_release_console(void);
extern int cio_is_console(struct subchannel_id);
extern struct subchannel *cio_get_console_subchannel(void);
extern spinlock_t * cio_get_console_lock(void);
+extern void *cio_get_console_priv(void);
#else
#define cio_is_console(schid) 0
#define cio_get_console_subchannel() NULL
-#define cio_get_console_lock() NULL;
+#define cio_get_console_lock() NULL
+#define cio_get_console_priv() NULL
#endif
extern int cio_show_msg;
diff --git a/drivers/s390/cio/cio_debug.h b/drivers/s390/cio/cio_debug.h
index c9bf8989930..d7429ef6c66 100644
--- a/drivers/s390/cio/cio_debug.h
+++ b/drivers/s390/cio/cio_debug.h
@@ -8,20 +8,19 @@ extern debug_info_t *cio_debug_msg_id;
extern debug_info_t *cio_debug_trace_id;
extern debug_info_t *cio_debug_crw_id;
-#define CIO_TRACE_EVENT(imp, txt) do { \
+#define CIO_TRACE_EVENT(imp, txt) do { \
debug_text_event(cio_debug_trace_id, imp, txt); \
} while (0)
-#define CIO_MSG_EVENT(imp, args...) do { \
- debug_sprintf_event(cio_debug_msg_id, imp , ##args); \
+#define CIO_MSG_EVENT(imp, args...) do { \
+ debug_sprintf_event(cio_debug_msg_id, imp , ##args); \
} while (0)
-#define CIO_CRW_EVENT(imp, args...) do { \
- debug_sprintf_event(cio_debug_crw_id, imp , ##args); \
+#define CIO_CRW_EVENT(imp, args...) do { \
+ debug_sprintf_event(cio_debug_crw_id, imp , ##args); \
} while (0)
-static inline void
-CIO_HEX_EVENT(int level, void *data, int length)
+static inline void CIO_HEX_EVENT(int level, void *data, int length)
{
if (unlikely(!cio_debug_trace_id))
return;
@@ -32,9 +31,10 @@ CIO_HEX_EVENT(int level, void *data, int length)
}
}
-#define CIO_DEBUG(printk_level,event_level,msg...) ({ \
- if (cio_show_msg) printk(printk_level msg); \
- CIO_MSG_EVENT (event_level, msg); \
-})
+#define CIO_DEBUG(printk_level, event_level, msg...) do { \
+ if (cio_show_msg) \
+ printk(printk_level "cio: " msg); \
+ CIO_MSG_EVENT(event_level, msg); \
+ } while (0)
#endif
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index c3df2cd009a..3b45bbe6cce 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -51,6 +51,62 @@ for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *data)
return ret;
}
+struct cb_data {
+ void *data;
+ struct idset *set;
+ int (*fn_known_sch)(struct subchannel *, void *);
+ int (*fn_unknown_sch)(struct subchannel_id, void *);
+};
+
+static int call_fn_known_sch(struct device *dev, void *data)
+{
+ struct subchannel *sch = to_subchannel(dev);
+ struct cb_data *cb = data;
+ int rc = 0;
+
+ idset_sch_del(cb->set, sch->schid);
+ if (cb->fn_known_sch)
+ rc = cb->fn_known_sch(sch, cb->data);
+ return rc;
+}
+
+static int call_fn_unknown_sch(struct subchannel_id schid, void *data)
+{
+ struct cb_data *cb = data;
+ int rc = 0;
+
+ if (idset_sch_contains(cb->set, schid))
+ rc = cb->fn_unknown_sch(schid, cb->data);
+ return rc;
+}
+
+int for_each_subchannel_staged(int (*fn_known)(struct subchannel *, void *),
+ int (*fn_unknown)(struct subchannel_id,
+ void *), void *data)
+{
+ struct cb_data cb;
+ int rc;
+
+ cb.set = idset_sch_new();
+ if (!cb.set)
+ return -ENOMEM;
+ idset_fill(cb.set);
+ cb.data = data;
+ cb.fn_known_sch = fn_known;
+ cb.fn_unknown_sch = fn_unknown;
+ /* Process registered subchannels. */
+ rc = bus_for_each_dev(&css_bus_type, NULL, &cb, call_fn_known_sch);
+ if (rc)
+ goto out;
+ /* Process unregistered subchannels. */
+ if (fn_unknown)
+ rc = for_each_subchannel(call_fn_unknown_sch, &cb);
+out:
+ idset_free(cb.set);
+
+ return rc;
+}
+
static struct subchannel *
css_alloc_subchannel(struct subchannel_id schid)
{
@@ -77,7 +133,7 @@ css_alloc_subchannel(struct subchannel_id schid)
* This is fine even on 64bit since the subchannel is always located
* under 2G.
*/
- sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
+ sch->schib.pmcw.intparm = (u32)(addr_t)sch;
ret = cio_modify(sch);
if (ret) {
kfree(sch->lock);
@@ -237,11 +293,25 @@ get_subchannel_by_schid(struct subchannel_id schid)
return dev ? to_subchannel(dev) : NULL;
}
+/**
+ * css_sch_is_valid() - check if a subchannel is valid
+ * @schib: subchannel information block for the subchannel
+ */
+int css_sch_is_valid(struct schib *schib)
+{
+ if ((schib->pmcw.st == SUBCHANNEL_TYPE_IO) && !schib->pmcw.dnv)
+ return 0;
+ return 1;
+}
+EXPORT_SYMBOL_GPL(css_sch_is_valid);
+
static int css_get_subchannel_status(struct subchannel *sch)
{
struct schib schib;
- if (stsch(sch->schid, &schib) || !schib.pmcw.dnv)
+ if (stsch(sch->schid, &schib))
+ return CIO_GONE;
+ if (!css_sch_is_valid(&schib))
return CIO_GONE;
if (sch->schib.pmcw.dnv && (schib.pmcw.dev != sch->schib.pmcw.dev))
return CIO_REVALIDATE;
@@ -293,7 +363,7 @@ static int css_evaluate_known_subchannel(struct subchannel *sch, int slow)
action = UNREGISTER;
if (sch->driver && sch->driver->notify) {
spin_unlock_irqrestore(sch->lock, flags);
- ret = sch->driver->notify(&sch->dev, event);
+ ret = sch->driver->notify(sch, event);
spin_lock_irqsave(sch->lock, flags);
if (ret)
action = NONE;
@@ -349,7 +419,7 @@ static int css_evaluate_new_subchannel(struct subchannel_id schid, int slow)
/* Will be done on the slow path. */
return -EAGAIN;
}
- if (stsch_err(schid, &schib) || !schib.pmcw.dnv) {
+ if (stsch_err(schid, &schib) || !css_sch_is_valid(&schib)) {
/* Unusable - ignore. */
return 0;
}
@@ -388,20 +458,56 @@ static int __init slow_subchannel_init(void)
return 0;
}
-static void css_slow_path_func(struct work_struct *unused)
+static int slow_eval_known_fn(struct subchannel *sch, void *data)
{
- struct subchannel_id schid;
+ int eval;
+ int rc;
- CIO_TRACE_EVENT(4, "slowpath");
spin_lock_irq(&slow_subchannel_lock);
- init_subchannel_id(&schid);
- while (idset_sch_get_first(slow_subchannel_set, &schid)) {
- idset_sch_del(slow_subchannel_set, schid);
- spin_unlock_irq(&slow_subchannel_lock);
- css_evaluate_subchannel(schid, 1);
- spin_lock_irq(&slow_subchannel_lock);
+ eval = idset_sch_contains(slow_subchannel_set, sch->schid);
+ idset_sch_del(slow_subchannel_set, sch->schid);
+ spin_unlock_irq(&slow_subchannel_lock);
+ if (eval) {
+ rc = css_evaluate_known_subchannel(sch, 1);
+ if (rc == -EAGAIN)
+ css_schedule_eval(sch->schid);
}
+ return 0;
+}
+
+static int slow_eval_unknown_fn(struct subchannel_id schid, void *data)
+{
+ int eval;
+ int rc = 0;
+
+ spin_lock_irq(&slow_subchannel_lock);
+ eval = idset_sch_contains(slow_subchannel_set, schid);
+ idset_sch_del(slow_subchannel_set, schid);
spin_unlock_irq(&slow_subchannel_lock);
+ if (eval) {
+ rc = css_evaluate_new_subchannel(schid, 1);
+ switch (rc) {
+ case -EAGAIN:
+ css_schedule_eval(schid);
+ rc = 0;
+ break;
+ case -ENXIO:
+ case -ENOMEM:
+ case -EIO:
+ /* These should abort looping */
+ break;
+ default:
+ rc = 0;
+ }
+ }
+ return rc;
+}
+
+static void css_slow_path_func(struct work_struct *unused)
+{
+ CIO_TRACE_EVENT(4, "slowpath");
+ for_each_subchannel_staged(slow_eval_known_fn, slow_eval_unknown_fn,
+ NULL);
}
static DECLARE_WORK(slow_path_work, css_slow_path_func);
@@ -430,7 +536,6 @@ void css_schedule_eval_all(void)
/* Reprobe subchannel if unregistered. */
static int reprobe_subchannel(struct subchannel_id schid, void *data)
{
- struct subchannel *sch;
int ret;
CIO_MSG_EVENT(6, "cio: reprobe 0.%x.%04x\n",
@@ -438,13 +543,6 @@ static int reprobe_subchannel(struct subchannel_id schid, void *data)
if (need_reprobe)
return -EAGAIN;
- sch = get_subchannel_by_schid(schid);
- if (sch) {
- /* Already known. */
- put_device(&sch->dev);
- return 0;
- }
-
ret = css_probe_device(schid);
switch (ret) {
case 0:
@@ -472,7 +570,7 @@ static void reprobe_all(struct work_struct *unused)
/* Make sure initial subchannel scan is done. */
wait_event(ccw_device_init_wq,
atomic_read(&ccw_device_init_count) == 0);
- ret = for_each_subchannel(reprobe_subchannel, NULL);
+ ret = for_each_subchannel_staged(NULL, reprobe_subchannel, NULL);
CIO_MSG_EVENT(2, "reprobe done (rc=%d, need_reprobe=%d)\n", ret,
need_reprobe);
@@ -787,8 +885,8 @@ int sch_is_pseudo_sch(struct subchannel *sch)
static int
css_bus_match (struct device *dev, struct device_driver *drv)
{
- struct subchannel *sch = container_of (dev, struct subchannel, dev);
- struct css_driver *driver = container_of (drv, struct css_driver, drv);
+ struct subchannel *sch = to_subchannel(dev);
+ struct css_driver *driver = to_cssdriver(drv);
if (sch->st == driver->subchannel_type)
return 1;
@@ -796,32 +894,36 @@ css_bus_match (struct device *dev, struct device_driver *drv)
return 0;
}
-static int
-css_probe (struct device *dev)
+static int css_probe(struct device *dev)
{
struct subchannel *sch;
+ int ret;
sch = to_subchannel(dev);
- sch->driver = container_of (dev->driver, struct css_driver, drv);
- return (sch->driver->probe ? sch->driver->probe(sch) : 0);
+ sch->driver = to_cssdriver(dev->driver);
+ ret = sch->driver->probe ? sch->driver->probe(sch) : 0;
+ if (ret)
+ sch->driver = NULL;
+ return ret;
}
-static int
-css_remove (struct device *dev)
+static int css_remove(struct device *dev)
{
struct subchannel *sch;
+ int ret;
sch = to_subchannel(dev);
- return (sch->driver->remove ? sch->driver->remove(sch) : 0);
+ ret = sch->driver->remove ? sch->driver->remove(sch) : 0;
+ sch->driver = NULL;
+ return ret;
}
-static void
-css_shutdown (struct device *dev)
+static void css_shutdown(struct device *dev)
{
struct subchannel *sch;
sch = to_subchannel(dev);
- if (sch->driver->shutdown)
+ if (sch->driver && sch->driver->shutdown)
sch->driver->shutdown(sch);
}
@@ -833,6 +935,34 @@ struct bus_type css_bus_type = {
.shutdown = css_shutdown,
};
+/**
+ * css_driver_register - register a css driver
+ * @cdrv: css driver to register
+ *
+ * This is mainly a wrapper around driver_register that sets name
+ * and bus_type in the embedded struct device_driver correctly.
+ */
+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);
+
+/**
+ * css_driver_unregister - unregister a css driver
+ * @cdrv: css driver to unregister
+ *
+ * This is a wrapper around driver_unregister.
+ */
+void css_driver_unregister(struct css_driver *cdrv)
+{
+ driver_unregister(&cdrv->drv);
+}
+EXPORT_SYMBOL_GPL(css_driver_unregister);
+
subsys_initcall(init_channel_subsystem);
MODULE_LICENSE("GPL");
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 81215ef3243..b7055452355 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -58,64 +58,6 @@ struct pgid {
__u32 tod_high; /* high word TOD clock */
} __attribute__ ((packed));
-#define MAX_CIWS 8
-
-/*
- * sense-id response buffer layout
- */
-struct senseid {
- /* common part */
- __u8 reserved; /* always 0x'FF' */
- __u16 cu_type; /* control unit type */
- __u8 cu_model; /* control unit model */
- __u16 dev_type; /* device type */
- __u8 dev_model; /* device model */
- __u8 unused; /* padding byte */
- /* extended part */
- struct ciw ciw[MAX_CIWS]; /* variable # of CIWs */
-} __attribute__ ((packed,aligned(4)));
-
-struct ccw_device_private {
- struct ccw_device *cdev;
- struct subchannel *sch;
- int state; /* device state */
- atomic_t onoff;
- unsigned long registered;
- struct ccw_dev_id dev_id; /* device id */
- struct subchannel_id schid; /* subchannel number */
- __u8 imask; /* lpm mask for SNID/SID/SPGID */
- int iretry; /* retry counter SNID/SID/SPGID */
- struct {
- unsigned int fast:1; /* post with "channel end" */
- unsigned int repall:1; /* report every interrupt status */
- unsigned int pgroup:1; /* do path grouping */
- unsigned int force:1; /* allow forced online */
- } __attribute__ ((packed)) options;
- struct {
- unsigned int pgid_single:1; /* use single path for Set PGID */
- unsigned int esid:1; /* Ext. SenseID supported by HW */
- unsigned int dosense:1; /* delayed SENSE required */
- unsigned int doverify:1; /* delayed path verification */
- unsigned int donotify:1; /* call notify function */
- unsigned int recog_done:1; /* dev. recog. complete */
- unsigned int fake_irb:1; /* deliver faked irb */
- unsigned int intretry:1; /* retry internal operation */
- } __attribute__((packed)) flags;
- unsigned long intparm; /* user interruption parameter */
- struct qdio_irq *qdio_data;
- struct irb irb; /* device status */
- struct senseid senseid; /* SenseID info */
- struct pgid pgid[8]; /* path group IDs per chpid*/
- struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */
- struct work_struct kick_work;
- wait_queue_head_t wait_q;
- struct timer_list timer;
- void *cmb; /* measurement information */
- struct list_head cmb_list; /* list of measured devices */
- u64 cmb_start_time; /* clock value of cmb reset */
- void *cmb_wait; /* deferred cmb enable/disable */
-};
-
/*
* A css driver handles all subchannels of one type.
* Currently, we only care about I/O subchannels (type 0), these
@@ -123,25 +65,35 @@ struct ccw_device_private {
*/
struct subchannel;
struct css_driver {
+ struct module *owner;
unsigned int subchannel_type;
struct device_driver drv;
- void (*irq)(struct device *);
- int (*notify)(struct device *, int);
- void (*verify)(struct device *);
- void (*termination)(struct device *);
+ void (*irq)(struct subchannel *);
+ int (*notify)(struct subchannel *, int);
+ void (*verify)(struct subchannel *);
+ void (*termination)(struct subchannel *);
int (*probe)(struct subchannel *);
int (*remove)(struct subchannel *);
void (*shutdown)(struct subchannel *);
+ 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 *);
+
extern void css_sch_device_unregister(struct subchannel *);
extern struct subchannel * get_subchannel_by_schid(struct subchannel_id);
extern int css_init_done;
+int for_each_subchannel_staged(int (*fn_known)(struct subchannel *, void *),
+ int (*fn_unknown)(struct subchannel_id,
+ void *), void *data);
extern int for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *);
extern void css_process_crw(int, int);
extern void css_reiterate_subchannels(void);
@@ -188,6 +140,8 @@ void css_schedule_eval(struct subchannel_id schid);
void css_schedule_eval_all(void);
int sch_is_pseudo_sch(struct subchannel *);
+struct schib;
+int css_sch_is_valid(struct schib *);
extern struct workqueue_struct *slow_path_wq;
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 74f6b539974..d35dc3f25d0 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -17,6 +17,7 @@
#include <linux/list.h>
#include <linux/device.h>
#include <linux/workqueue.h>
+#include <linux/timer.h>
#include <asm/ccwdev.h>
#include <asm/cio.h>
@@ -28,6 +29,12 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
+#include "io_sch.h"
+
+static struct timer_list recovery_timer;
+static spinlock_t recovery_lock;
+static int recovery_phase;
+static const unsigned long recovery_delay[] = { 3, 30, 300 };
/******************* bus type handling ***********************/
@@ -115,19 +122,18 @@ static int ccw_uevent(struct device *dev, struct kobj_uevent_env *env)
struct bus_type ccw_bus_type;
-static int io_subchannel_probe (struct subchannel *);
-static int io_subchannel_remove (struct subchannel *);
-static int io_subchannel_notify(struct device *, int);
-static void io_subchannel_verify(struct device *);
-static void io_subchannel_ioterm(struct device *);
+static void io_subchannel_irq(struct subchannel *);
+static int io_subchannel_probe(struct subchannel *);
+static int io_subchannel_remove(struct subchannel *);
+static int io_subchannel_notify(struct subchannel *, int);
+static void io_subchannel_verify(struct subchannel *);
+static void io_subchannel_ioterm(struct subchannel *);
static void io_subchannel_shutdown(struct subchannel *);
static struct css_driver io_subchannel_driver = {
+ .owner = THIS_MODULE,
.subchannel_type = SUBCHANNEL_TYPE_IO,
- .drv = {
- .name = "io_subchannel",
- .bus = &css_bus_type,
- },
+ .name = "io_subchannel",
.irq = io_subchannel_irq,
.notify = io_subchannel_notify,
.verify = io_subchannel_verify,
@@ -142,6 +148,8 @@ struct workqueue_struct *ccw_device_notify_work;
wait_queue_head_t ccw_device_init_wq;
atomic_t ccw_device_init_count;
+static void recovery_func(unsigned long data);
+
static int __init
init_ccw_bus_type (void)
{
@@ -149,6 +157,7 @@ init_ccw_bus_type (void)
init_waitqueue_head(&ccw_device_init_wq);
atomic_set(&ccw_device_init_count, 0);
+ setup_timer(&recovery_timer, recovery_func, 0);
ccw_device_work = create_singlethread_workqueue("cio");
if (!ccw_device_work)
@@ -166,7 +175,8 @@ init_ccw_bus_type (void)
if ((ret = bus_register (&ccw_bus_type)))
goto out_err;
- if ((ret = driver_register(&io_subchannel_driver.drv)))
+ ret = css_driver_register(&io_subchannel_driver);
+ if (ret)
goto out_err;
wait_event(ccw_device_init_wq,
@@ -186,7 +196,7 @@ out_err:
static void __exit
cleanup_ccw_bus_type (void)
{
- driver_unregister(&io_subchannel_driver.drv);
+ css_driver_unregister(&io_subchannel_driver);
bus_unregister(&ccw_bus_type);
destroy_workqueue(ccw_device_notify_work);
destroy_workqueue(ccw_device_work);
@@ -773,7 +783,7 @@ static void sch_attach_device(struct subchannel *sch,
{
css_update_ssd_info(sch);
spin_lock_irq(sch->lock);
- sch->dev.driver_data = cdev;
+ sch_set_cdev(sch, cdev);
cdev->private->schid = sch->schid;
cdev->ccwlock = sch->lock;
device_trigger_reprobe(sch);
@@ -795,7 +805,7 @@ static void sch_attach_disconnected_device(struct subchannel *sch,
put_device(&other_sch->dev);
return;
}
- other_sch->dev.driver_data = NULL;
+ sch_set_cdev(other_sch, NULL);
/* No need to keep a subchannel without ccw device around. */
css_sch_device_unregister(other_sch);
put_device(&other_sch->dev);
@@ -831,12 +841,12 @@ static void sch_create_and_recog_new_device(struct subchannel *sch)
return;
}
spin_lock_irq(sch->lock);
- sch->dev.driver_data = cdev;
+ sch_set_cdev(sch, cdev);
spin_unlock_irq(sch->lock);
/* Start recognition for the new ccw device. */
if (io_subchannel_recog(cdev, sch)) {
spin_lock_irq(sch->lock);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
spin_unlock_irq(sch->lock);
if (cdev->dev.release)
cdev->dev.release(&cdev->dev);
@@ -940,7 +950,7 @@ io_subchannel_register(struct work_struct *work)
cdev->private->dev_id.devno, ret);
put_device(&cdev->dev);
spin_lock_irqsave(sch->lock, flags);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
spin_unlock_irqrestore(sch->lock, flags);
kfree (cdev->private);
kfree (cdev);
@@ -1022,7 +1032,7 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch)
int rc;
struct ccw_device_private *priv;
- sch->dev.driver_data = cdev;
+ sch_set_cdev(sch, cdev);
sch->driver = &io_subchannel_driver;
cdev->ccwlock = sch->lock;
@@ -1082,7 +1092,7 @@ static void ccw_device_move_to_sch(struct work_struct *work)
}
if (former_parent) {
spin_lock_irq(former_parent->lock);
- former_parent->dev.driver_data = NULL;
+ sch_set_cdev(former_parent, NULL);
spin_unlock_irq(former_parent->lock);
css_sch_device_unregister(former_parent);
/* Reset intparm to zeroes. */
@@ -1096,6 +1106,18 @@ out:
put_device(&cdev->dev);
}
+static void io_subchannel_irq(struct subchannel *sch)
+{
+ struct ccw_device *cdev;
+
+ cdev = sch_get_cdev(sch);
+
+ CIO_TRACE_EVENT(3, "IRQ");
+ CIO_TRACE_EVENT(3, sch->dev.bus_id);
+ if (cdev)
+ dev_fsm_event(cdev, DEV_EVENT_INTERRUPT);
+}
+
static int
io_subchannel_probe (struct subchannel *sch)
{
@@ -1104,13 +1126,13 @@ io_subchannel_probe (struct subchannel *sch)
unsigned long flags;
struct ccw_dev_id dev_id;
- if (sch->dev.driver_data) {
+ cdev = sch_get_cdev(sch);
+ if (cdev) {
/*
* This subchannel already has an associated ccw_device.
* Register it and exit. This happens for all early
* device, e.g. the console.
*/
- cdev = sch->dev.driver_data;
cdev->dev.groups = ccwdev_attr_groups;
device_initialize(&cdev->dev);
ccw_device_register(cdev);
@@ -1132,6 +1154,11 @@ io_subchannel_probe (struct subchannel *sch)
*/
dev_id.devno = sch->schib.pmcw.dev;
dev_id.ssid = sch->schid.ssid;
+ /* Allocate I/O subchannel private data. */
+ sch->private = kzalloc(sizeof(struct io_subchannel_private),
+ GFP_KERNEL | GFP_DMA);
+ if (!sch->private)
+ return -ENOMEM;
cdev = get_disc_ccwdev_by_dev_id(&dev_id, NULL);
if (!cdev)
cdev = get_orphaned_ccwdev_by_dev_id(to_css(sch->dev.parent),
@@ -1149,16 +1176,18 @@ io_subchannel_probe (struct subchannel *sch)
return 0;
}
cdev = io_subchannel_create_ccwdev(sch);
- if (IS_ERR(cdev))
+ if (IS_ERR(cdev)) {
+ kfree(sch->private);
return PTR_ERR(cdev);
-
+ }
rc = io_subchannel_recog(cdev, sch);
if (rc) {
spin_lock_irqsave(sch->lock, flags);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
spin_unlock_irqrestore(sch->lock, flags);
if (cdev->dev.release)
cdev->dev.release(&cdev->dev);
+ kfree(sch->private);
}
return rc;
@@ -1170,25 +1199,25 @@ io_subchannel_remove (struct subchannel *sch)
struct ccw_device *cdev;
unsigned long flags;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return 0;
- cdev = sch->dev.driver_data;
/* Set ccw device to not operational and drop reference. */
spin_lock_irqsave(cdev->ccwlock, flags);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
cdev->private->state = DEV_STATE_NOT_OPER;
spin_unlock_irqrestore(cdev->ccwlock, flags);
ccw_device_unregister(cdev);
put_device(&cdev->dev);
+ kfree(sch->private);
return 0;
}
-static int
-io_subchannel_notify(struct device *dev, int event)
+static int io_subchannel_notify(struct subchannel *sch, int event)
{
struct ccw_device *cdev;
- cdev = dev->driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev)
return 0;
if (!cdev->drv)
@@ -1198,22 +1227,20 @@ io_subchannel_notify(struct device *dev, int event)
return cdev->drv->notify ? cdev->drv->notify(cdev, event) : 0;
}
-static void
-io_subchannel_verify(struct device *dev)
+static void io_subchannel_verify(struct subchannel *sch)
{
struct ccw_device *cdev;
- cdev = dev->driver_data;
+ cdev = sch_get_cdev(sch);
if (cdev)
dev_fsm_event(cdev, DEV_EVENT_VERIFY);
}
-static void
-io_subchannel_ioterm(struct device *dev)
+static void io_subchannel_ioterm(struct subchannel *sch)
{
struct ccw_device *cdev;
- cdev = dev->driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev)
return;
/* Internal I/O will be retried by the interrupt handler. */
@@ -1231,7 +1258,7 @@ io_subchannel_shutdown(struct subchannel *sch)
struct ccw_device *cdev;
int ret;
- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (cio_is_console(sch->schid))
return;
@@ -1271,6 +1298,9 @@ ccw_device_console_enable (struct ccw_device *cdev, struct subchannel *sch)
{
int rc;
+ /* Attach subchannel private data. */
+ sch->private = cio_get_console_priv();
+ memset(sch->private, 0, sizeof(struct io_subchannel_private));
/* Initialize the ccw_device structure. */
cdev->dev.parent= &sch->dev;
rc = io_subchannel_recog(cdev, sch);
@@ -1456,6 +1486,7 @@ int ccw_driver_register(struct ccw_driver *cdriver)
drv->bus = &ccw_bus_type;
drv->name = cdriver->name;
+ drv->owner = cdriver->owner;
return driver_register(drv);
}
@@ -1481,6 +1512,60 @@ ccw_device_get_subchannel_id(struct ccw_device *cdev)
return sch->schid;
}
+static int recovery_check(struct device *dev, void *data)
+{
+ struct ccw_device *cdev = to_ccwdev(dev);
+ int *redo = data;
+
+ spin_lock_irq(cdev->ccwlock);
+ switch (cdev->private->state) {
+ case DEV_STATE_DISCONNECTED:
+ CIO_MSG_EVENT(3, "recovery: trigger 0.%x.%04x\n",
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno);
+ dev_fsm_event(cdev, DEV_EVENT_VERIFY);
+ *redo = 1;
+ break;
+ case DEV_STATE_DISCONNECTED_SENSE_ID:
+ *redo = 1;
+ break;
+ }
+ spin_unlock_irq(cdev->ccwlock);
+
+ return 0;
+}
+
+static void recovery_func(unsigned long data)
+{
+ int redo = 0;
+
+ bus_for_each_dev(&ccw_bus_type, NULL, &redo, recovery_check);
+ if (redo) {
+ spin_lock_irq(&recovery_lock);
+ if (!timer_pending(&recovery_timer)) {
+ if (recovery_phase < ARRAY_SIZE(recovery_delay) - 1)
+ recovery_phase++;
+ mod_timer(&recovery_timer, jiffies +
+ recovery_delay[recovery_phase] * HZ);
+ }
+ spin_unlock_irq(&recovery_lock);
+ } else
+ CIO_MSG_EVENT(2, "recovery: end\n");
+}
+
+void ccw_device_schedule_recovery(void)
+{
+ unsigned long flags;
+
+ CIO_MSG_EVENT(2, "recovery: schedule\n");
+ spin_lock_irqsave(&recovery_lock, flags);
+ if (!timer_pending(&recovery_timer) || (recovery_phase != 0)) {
+ recovery_phase = 0;
+ mod_timer(&recovery_timer, jiffies + recovery_delay[0] * HZ);
+ }
+ spin_unlock_irqrestore(&recovery_lock, flags);
+}
+
MODULE_LICENSE("GPL");
EXPORT_SYMBOL(ccw_device_set_online);
EXPORT_SYMBOL(ccw_device_set_offline);
diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h
index 0d408960043..d40a2ffaa00 100644
--- a/drivers/s390/cio/device.h
+++ b/drivers/s390/cio/device.h
@@ -5,6 +5,8 @@
#include <asm/atomic.h>
#include <linux/wait.h>
+#include "io_sch.h"
+
/*
* states of the device statemachine
*/
@@ -74,7 +76,6 @@ extern struct workqueue_struct *ccw_device_notify_work;
extern wait_queue_head_t ccw_device_init_wq;
extern atomic_t ccw_device_init_count;
-void io_subchannel_irq (struct device *pdev);
void io_subchannel_recog_done(struct ccw_device *cdev);
int ccw_device_cancel_halt_clear(struct ccw_device *);
@@ -87,6 +88,8 @@ int ccw_device_recognition(struct ccw_device *);
int ccw_device_online(struct ccw_device *);
int ccw_device_offline(struct ccw_device *);
+void ccw_device_schedule_recovery(void);
+
/* Function prototypes for device status and basic sense stuff. */
void ccw_device_accumulate_irb(struct ccw_device *, struct irb *);
void ccw_device_accumulate_basic_sense(struct ccw_device *, struct irb *);
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index bfad421cda6..4b92c84fb43 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -25,14 +25,16 @@
#include "ioasm.h"
#include "chp.h"
+static int timeout_log_enabled;
+
int
device_is_online(struct subchannel *sch)
{
struct ccw_device *cdev;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return 0;
- cdev = sch->dev.driver_data;
return (cdev->private->state == DEV_STATE_ONLINE);
}
@@ -41,9 +43,9 @@ device_is_disconnected(struct subchannel *sch)
{
struct ccw_device *cdev;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return 0;
- cdev = sch->dev.driver_data;
return (cdev->private->state == DEV_STATE_DISCONNECTED ||
cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID);
}
@@ -53,19 +55,21 @@ device_set_disconnected(struct subchannel *sch)
{
struct ccw_device *cdev;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return;
- cdev = sch->dev.driver_data;
ccw_device_set_timeout(cdev, 0);
cdev->private->flags.fake_irb = 0;
cdev->private->state = DEV_STATE_DISCONNECTED;
+ if (cdev->online)
+ ccw_device_schedule_recovery();
}
void device_set_intretry(struct subchannel *sch)
{
struct ccw_device *cdev;
- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev)
return;
cdev->private->flags.intretry = 1;
@@ -75,13 +79,62 @@ int device_trigger_verify(struct subchannel *sch)
{
struct ccw_device *cdev;
- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev || !cdev->online)
return -EINVAL;
dev_fsm_event(cdev, DEV_EVENT_VERIFY);
return 0;
}
+static int __init ccw_timeout_log_setup(char *unused)
+{
+ timeout_log_enabled = 1;
+ return 1;
+}
+
+__setup("ccw_timeout_log", ccw_timeout_log_setup);
+
+static void ccw_timeout_log(struct ccw_device *cdev)
+{
+ struct schib schib;
+ struct subchannel *sch;
+ struct io_subchannel_private *private;
+ int cc;
+
+ sch = to_subchannel(cdev->dev.parent);
+ private = to_io_private(sch);
+ cc = stsch(sch->schid, &schib);
+
+ printk(KERN_WARNING "cio: ccw device timeout occurred at %llx, "
+ "device information:\n", get_clock());
+ printk(KERN_WARNING "cio: orb:\n");
+ print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
+ &private->orb, sizeof(private->orb), 0);
+ printk(KERN_WARNING "cio: ccw device bus id: %s\n", cdev->dev.bus_id);
+ printk(KERN_WARNING "cio: subchannel bus id: %s\n", sch->dev.bus_id);
+ printk(KERN_WARNING "cio: subchannel lpm: %02x, opm: %02x, "
+ "vpm: %02x\n", sch->lpm, sch->opm, sch->vpm);
+
+ if ((void *)(addr_t)private->orb.cpa == &private->sense_ccw ||
+ (void *)(addr_t)private->orb.cpa == cdev->private->iccws)
+ printk(KERN_WARNING "cio: last channel program (intern):\n");
+ else
+ printk(KERN_WARNING "cio: last channel program:\n");
+
+ print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
+ (void *)(addr_t)private->orb.cpa,
+ sizeof(struct ccw1), 0);
+ printk(KERN_WARNING "cio: ccw device state: %d\n",
+ cdev->private->state);
+ printk(KERN_WARNING "cio: store subchannel returned: cc=%d\n", cc);
+ printk(KERN_WARNING "cio: schib:\n");
+ print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
+ &schib, sizeof(schib), 0);
+ printk(KERN_WARNING "cio: ccw device flags:\n");
+ print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
+ &cdev->private->flags, sizeof(cdev->private->flags), 0);
+}
+
/*
* Timeout function. It just triggers a DEV_EVENT_TIMEOUT.
*/
@@ -92,6 +145,8 @@ ccw_device_timeout(unsigned long data)
cdev = (struct ccw_device *) data;
spin_lock_irq(cdev->ccwlock);
+ if (timeout_log_enabled)
+ ccw_timeout_log(cdev);
dev_fsm_event(cdev, DEV_EVENT_TIMEOUT);
spin_unlock_irq(cdev->ccwlock);
}
@@ -122,9 +177,9 @@ device_kill_pending_timer(struct subchannel *sch)
{
struct ccw_device *cdev;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return;
- cdev = sch->dev.driver_data;
ccw_device_set_timeout(cdev, 0);
}
@@ -268,7 +323,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
switch (state) {
case DEV_STATE_NOT_OPER:
CIO_DEBUG(KERN_WARNING, 2,
- "cio: SenseID : unknown device %04x on subchannel "
+ "SenseID : unknown device %04x on subchannel "
"0.%x.%04x\n", cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
break;
@@ -294,7 +349,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
}
/* Issue device info message. */
CIO_DEBUG(KERN_INFO, 2,
- "cio: SenseID : device 0.%x.%04x reports: "
+ "SenseID : device 0.%x.%04x reports: "
"CU Type/Mod = %04X/%02X, Dev Type/Mod = "
"%04X/%02X\n",
cdev->private->dev_id.ssid,
@@ -304,7 +359,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
break;
case DEV_STATE_BOXED:
CIO_DEBUG(KERN_WARNING, 2,
- "cio: SenseID : boxed device %04x on subchannel "
+ "SenseID : boxed device %04x on subchannel "
"0.%x.%04x\n", cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
break;
@@ -349,7 +404,7 @@ ccw_device_oper_notify(struct work_struct *work)
sch = to_subchannel(cdev->dev.parent);
if (sch->driver && sch->driver->notify) {
spin_unlock_irqrestore(cdev->ccwlock, flags);
- ret = sch->driver->notify(&sch->dev, CIO_OPER);
+ ret = sch->driver->notify(sch, CIO_OPER);
spin_lock_irqsave(cdev->ccwlock, flags);
} else
ret = 0;
@@ -389,7 +444,7 @@ ccw_device_done(struct ccw_device *cdev, int state)
if (state == DEV_STATE_BOXED)
CIO_DEBUG(KERN_WARNING, 2,
- "cio: Boxed device %04x on subchannel %04x\n",
+ "Boxed device %04x on subchannel %04x\n",
cdev->private->dev_id.devno, sch->schid.sch_no);
if (cdev->private->flags.donotify) {
@@ -500,7 +555,8 @@ ccw_device_recognition(struct ccw_device *cdev)
(cdev->private->state != DEV_STATE_BOXED))
return -EINVAL;
sch = to_subchannel(cdev->dev.parent);
- ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc);
+ ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc,
+ (u32)(addr_t)sch);
if (ret != 0)
/* Couldn't enable the subchannel for i/o. Sick device. */
return ret;
@@ -587,9 +643,10 @@ ccw_device_verify_done(struct ccw_device *cdev, int err)
default:
/* Reset oper notify indication after verify error. */
cdev->private->flags.donotify = 0;
- if (cdev->online)
+ if (cdev->online) {
+ ccw_device_set_timeout(cdev, 0);
dev_fsm_event(cdev, DEV_EVENT_NOTOPER);
- else
+ } else
ccw_device_done(cdev, DEV_STATE_NOT_OPER);
break;
}
@@ -610,7 +667,8 @@ ccw_device_online(struct ccw_device *cdev)
sch = to_subchannel(cdev->dev.parent);
if (css_init_done && !get_device(&cdev->dev))
return -ENODEV;
- ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc);
+ ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc,
+ (u32)(addr_t)sch);
if (ret != 0) {
/* Couldn't enable the subchannel for i/o. Sick device. */
if (ret == -ENODEV)
@@ -937,7 +995,7 @@ void device_kill_io(struct subchannel *sch)
int ret;
struct ccw_device *cdev;
- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
ret = ccw_device_cancel_halt_clear(cdev);
if (ret == -EBUSY) {
ccw_device_set_timeout(cdev, 3*HZ);
@@ -990,7 +1048,8 @@ ccw_device_start_id(struct ccw_device *cdev, enum dev_event dev_event)
struct subchannel *sch;
sch = to_subchannel(cdev->dev.parent);
- if (cio_enable_subchannel(sch, sch->schib.pmcw.isc) != 0)
+ if (cio_enable_subchannel(sch, sch->schib.pmcw.isc,
+ (u32)(addr_t)sch) != 0)
/* Couldn't enable the subchannel for i/o. Sick device. */
return;
@@ -1006,9 +1065,9 @@ device_trigger_reprobe(struct subchannel *sch)
{
struct ccw_device *cdev;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return;
- cdev = sch->dev.driver_data;
if (cdev->private->state != DEV_STATE_DISCONNECTED)
return;
@@ -1028,7 +1087,7 @@ device_trigger_reprobe(struct subchannel *sch)
sch->schib.pmcw.ena = 0;
if ((sch->lpm & (sch->lpm - 1)) != 0)
sch->schib.pmcw.mp = 1;
- sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
+ sch->schib.pmcw.intparm = (u32)(addr_t)sch;
/* We should also udate ssd info, but this has to wait. */
/* Check if this is another device which appeared on the same sch. */
if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) {
@@ -1223,21 +1282,4 @@ fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS] = {
},
};
-/*
- * io_subchannel_irq is called for "real" interrupts or for status
- * pending conditions on msch.
- */
-void
-io_subchannel_irq (struct device *pdev)
-{
- struct ccw_device *cdev;
-
- cdev = to_subchannel(pdev)->dev.driver_data;
-
- CIO_TRACE_EVENT (3, "IRQ");
- CIO_TRACE_EVENT (3, pdev->bus_id);
- if (cdev)
- dev_fsm_event(cdev, DEV_EVENT_INTERRUPT);
-}
-
EXPORT_SYMBOL_GPL(ccw_device_set_timeout);
diff --git a/drivers/s390/cio/device_id.c b/drivers/s390/cio/device_id.c
index 156f3f9786b..dc4d87f77f6 100644
--- a/drivers/s390/cio/device_id.c
+++ b/drivers/s390/cio/device_id.c
@@ -24,18 +24,20 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
+#include "io_sch.h"
-/*
- * Input :
- * devno - device number
- * ps - pointer to sense ID data area
- * Output : none
+/**
+ * vm_vdev_to_cu_type - Convert vm virtual device into control unit type
+ * for certain devices.
+ * @class: virtual device class
+ * @type: virtual device type
+ *
+ * Returns control unit type if a match was made or %0xffff otherwise.
*/
-static void
-VM_virtual_device_info (__u16 devno, struct senseid *ps)
+static int vm_vdev_to_cu_type(int class, int type)
{
static struct {
- int vrdcvcla, vrdcvtyp, cu_type;
+ int class, type, cu_type;
} vm_devices[] = {
{ 0x08, 0x01, 0x3480 },
{ 0x08, 0x02, 0x3430 },
@@ -67,8 +69,26 @@ VM_virtual_device_info (__u16 devno, struct senseid *ps)
{ 0x40, 0xc0, 0x5080 },
{ 0x80, 0x00, 0x3215 },
};
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vm_devices); i++)
+ if (class == vm_devices[i].class && type == vm_devices[i].type)
+ return vm_devices[i].cu_type;
+
+ return 0xffff;
+}
+
+/**
+ * diag_get_dev_info - retrieve device information via DIAG X'210'
+ * @devno: device number
+ * @ps: pointer to sense ID data area
+ *
+ * Returns zero on success, non-zero otherwise.
+ */
+static int diag_get_dev_info(u16 devno, struct senseid *ps)
+{
struct diag210 diag_data;
- int ccode, i;
+ int ccode;
CIO_TRACE_EVENT (4, "VMvdinf");
@@ -78,21 +98,21 @@ VM_virtual_device_info (__u16 devno, struct senseid *ps)
};
ccode = diag210 (&diag_data);
- ps->reserved = 0xff;
+ if ((ccode == 0) || (ccode == 2)) {
+ ps->reserved = 0xff;
- /* Special case for bloody osa devices. */
- if (diag_data.vrdcvcla == 0x02 &&
- diag_data.vrdcvtyp == 0x20) {
- ps->cu_type = 0x3088;
- ps->cu_model = 0x60;
- return;
- }
- for (i = 0; i < ARRAY_SIZE(vm_devices); i++)
- if (diag_data.vrdcvcla == vm_devices[i].vrdcvcla &&
- diag_data.vrdcvtyp == vm_devices[i].vrdcvtyp) {
- ps->cu_type = vm_devices[i].cu_type;
- return;
+ /* Special case for osa devices. */
+ if (diag_data.vrdcvcla == 0x02 && diag_data.vrdcvtyp == 0x20) {
+ ps->cu_type = 0x3088;
+ ps->cu_model = 0x60;
+ return 0;
}
+ ps->cu_type = vm_vdev_to_cu_type(diag_data.vrdcvcla,
+ diag_data.vrdcvtyp);
+ if (ps->cu_type != 0xffff)
+ return 0;
+ }
+
CIO_MSG_EVENT(0, "DIAG X'210' for device %04X returned (cc = %d):"
"vdev class : %02X, vdev type : %04X \n ... "
"rdev class : %02X, rdev type : %04X, "
@@ -101,6 +121,8 @@ VM_virtual_device_info (__u16 devno, struct senseid *ps)
diag_data.vrdcvcla, diag_data.vrdcvtyp,
diag_data.vrdcrccl, diag_data.vrdccrty,
diag_data.vrdccrmd);
+
+ return -ENODEV;
}
/*
@@ -129,6 +151,7 @@ __ccw_device_sense_id_start(struct ccw_device *cdev)
/* Try on every path. */
ret = -ENODEV;
while (cdev->private->imask != 0) {
+ cdev->private->senseid.cu_type = 0xFFFF;
if ((sch->opm & cdev->private->imask) != 0 &&
cdev->private->iretry > 0) {
cdev->private->iretry--;
@@ -152,7 +175,6 @@ ccw_device_sense_id_start(struct ccw_device *cdev)
int ret;
memset (&cdev->private->senseid, 0, sizeof (struct senseid));
- cdev->private->senseid.cu_type = 0xFFFF;
cdev->private->imask = 0x80;
cdev->private->iretry = 5;
ret = __ccw_device_sense_id_start(cdev);
@@ -172,13 +194,7 @@ ccw_device_check_sense_id(struct ccw_device *cdev)
sch = to_subchannel(cdev->dev.parent);
irb = &cdev->private->irb;
- /* Did we get a proper answer ? */
- if (cdev->private->senseid.cu_type != 0xFFFF &&
- cdev->private->senseid.reserved == 0xFF) {
- if (irb->scsw.count < sizeof (struct senseid) - 8)
- cdev->private->flags.esid = 1;
- return 0; /* Success */
- }
+
/* Check the error cases. */
if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC | SCSW_FCTL_CLEAR_FUNC)) {
/* Retry Sense ID if requested. */
@@ -219,15 +235,26 @@ ccw_device_check_sense_id(struct ccw_device *cdev)
return -EAGAIN;
}
if (irb->scsw.cc == 3) {
- if ((sch->orb.lpm &
- sch->schib.pmcw.pim & sch->schib.pmcw.pam) != 0)
+ u8 lpm;
+
+ lpm = to_io_private(sch)->orb.lpm;
+ if ((lpm & sch->schib.pmcw.pim & sch->schib.pmcw.pam) != 0)
CIO_MSG_EVENT(2, "SenseID : path %02X for device %04x "
"on subchannel 0.%x.%04x is "
- "'not operational'\n", sch->orb.lpm,
+ "'not operational'\n", lpm,
cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
return -EACCES;
}
+
+ /* Did we get a proper answer ? */
+ if (irb->scsw.cc == 0 && cdev->private->senseid.cu_type != 0xFFFF &&
+ cdev->private->senseid.reserved == 0xFF) {
+ if (irb->scsw.count < sizeof(struct senseid) - 8)
+ cdev->private->flags.esid = 1;
+ return 0; /* Success */
+ }
+
/* Hmm, whatever happened, try again. */
CIO_MSG_EVENT(2, "SenseID : start_IO() for device %04x on "
"subchannel 0.%x.%04x returns status %02X%02X\n",
@@ -280,20 +307,17 @@ ccw_device_sense_id_irq(struct ccw_device *cdev, enum dev_event dev_event)
break;
/* fall through. */
default: /* Sense ID failed. Try asking VM. */
- if (MACHINE_IS_VM) {
- VM_virtual_device_info (cdev->private->dev_id.devno,
+ if (MACHINE_IS_VM)
+ ret = diag_get_dev_info(cdev->private->dev_id.devno,
&cdev->private->senseid);
- if (cdev->private->senseid.cu_type != 0xFFFF) {
- /* Got the device information from VM. */
- ccw_device_sense_id_done(cdev, 0);
- return;
- }
- }
- /*
- * If we can't couldn't identify the device type we
- * consider the device "not operational".
- */
- ccw_device_sense_id_done(cdev, -ENODEV);
+ else
+ /*
+ * If we can't couldn't identify the device type we
+ * consider the device "not operational".
+ */
+ ret = -ENODEV;
+
+ ccw_device_sense_id_done(cdev, ret);
break;
}
}
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 7fd2dadc329..49b58eb0fab 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -501,7 +501,7 @@ ccw_device_stlck(struct ccw_device *cdev)
return -ENOMEM;
}
spin_lock_irqsave(sch->lock, flags);
- ret = cio_enable_subchannel(sch, 3);
+ ret = cio_enable_subchannel(sch, 3, (u32)(addr_t)sch);
if (ret)
goto out_unlock;
/*
diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c
index cb1879a9681..c52449a1f9f 100644
--- a/drivers/s390/cio/device_pgid.c
+++ b/drivers/s390/cio/device_pgid.c
@@ -22,6 +22,7 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
+#include "io_sch.h"
/*
* Helper function called from interrupt context to decide whether an
@@ -155,10 +156,13 @@ __ccw_device_check_sense_pgid(struct ccw_device *cdev)
return -EAGAIN;
}
if (irb->scsw.cc == 3) {
+ u8 lpm;
+
+ lpm = to_io_private(sch)->orb.lpm;
CIO_MSG_EVENT(2, "SNID - Device %04x on Subchannel 0.%x.%04x,"
" lpm %02X, became 'not operational'\n",
cdev->private->dev_id.devno, sch->schid.ssid,
- sch->schid.sch_no, sch->orb.lpm);
+ sch->schid.sch_no, lpm);
return -EACCES;
}
i = 8 - ffs(cdev->private->imask);
diff --git a/drivers/s390/cio/device_status.c b/drivers/s390/cio/device_status.c
index aa96e675259..ebe0848cfe3 100644
--- a/drivers/s390/cio/device_status.c
+++ b/drivers/s390/cio/device_status.c
@@ -20,6 +20,7 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
+#include "io_sch.h"
/*
* Check for any kind of channel or interface control check but don't
@@ -310,6 +311,7 @@ int
ccw_device_do_sense(struct ccw_device *cdev, struct irb *irb)
{
struct subchannel *sch;
+ struct ccw1 *sense_ccw;
sch = to_subchannel(cdev->dev.parent);
@@ -326,15 +328,16 @@ ccw_device_do_sense(struct ccw_device *cdev, struct irb *irb)
/*
* We have ending status but no sense information. Do a basic sense.
*/
- sch->sense_ccw.cmd_code = CCW_CMD_BASIC_SENSE;
- sch->sense_ccw.cda = (__u32) __pa(cdev->private->irb.ecw);
- sch->sense_ccw.count = SENSE_MAX_COUNT;
- sch->sense_ccw.flags = CCW_FLAG_SLI;
+ sense_ccw = &to_io_private(sch)->sense_ccw;
+ sense_ccw->cmd_code = CCW_CMD_BASIC_SENSE;
+ sense_ccw->cda = (__u32) __pa(cdev->private->irb.ecw);
+ sense_ccw->count = SENSE_MAX_COUNT;
+ sense_ccw->flags = CCW_FLAG_SLI;
/* Reset internal retry indication. */
cdev->private->flags.intretry = 0;
- return cio_start (sch, &sch->sense_ccw, 0xff);
+ return cio_start(sch, sense_ccw, 0xff);
}
/*
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h
new file mode 100644
index 00000000000..8c613160bfc
--- /dev/null
+++ b/drivers/s390/cio/io_sch.h
@@ -0,0 +1,163 @@
+#ifndef S390_IO_SCH_H
+#define S390_IO_SCH_H
+
+#include "schid.h"
+
+/*
+ * operation request block
+ */
+struct 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)));
+
+struct io_subchannel_private {
+ struct orb orb; /* operation request block */
+ struct ccw1 sense_ccw; /* static ccw for sense command */
+} __attribute__ ((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 MAX_CIWS 8
+
+/*
+ * sense-id response buffer layout
+ */
+struct senseid {
+ /* common part */
+ u8 reserved; /* always 0x'FF' */
+ u16 cu_type; /* control unit type */
+ u8 cu_model; /* control unit model */
+ u16 dev_type; /* device type */
+ u8 dev_model; /* device model */
+ u8 unused; /* padding byte */
+ /* extended part */
+ struct ciw ciw[MAX_CIWS]; /* variable # of CIWs */
+} __attribute__ ((packed, aligned(4)));
+
+struct ccw_device_private {
+ struct ccw_device *cdev;
+ struct subchannel *sch;
+ int state; /* device state */
+ atomic_t onoff;
+ unsigned long registered;
+ struct ccw_dev_id dev_id; /* device id */
+ struct subchannel_id schid; /* subchannel number */
+ u8 imask; /* lpm mask for SNID/SID/SPGID */
+ int iretry; /* retry counter SNID/SID/SPGID */
+ struct {
+ unsigned int fast:1; /* post with "channel end" */
+ unsigned int repall:1; /* report every interrupt status */
+ unsigned int pgroup:1; /* do path grouping */
+ unsigned int force:1; /* allow forced online */
+ } __attribute__ ((packed)) options;
+ struct {
+ unsigned int pgid_single:1; /* use single path for Set PGID */
+ unsigned int esid:1; /* Ext. SenseID supported by HW */
+ unsigned int dosense:1; /* delayed SENSE required */
+ unsigned int doverify:1; /* delayed path verification */
+ unsigned int donotify:1; /* call notify function */
+ unsigned int recog_done:1; /* dev. recog. complete */
+ unsigned int fake_irb:1; /* deliver faked irb */
+ unsigned int intretry:1; /* retry internal operation */
+ } __attribute__((packed)) flags;
+ unsigned long intparm; /* user interruption parameter */
+ struct qdio_irq *qdio_data;
+ struct irb irb; /* device status */
+ struct senseid senseid; /* SenseID info */
+ struct pgid pgid[8]; /* path group IDs per chpid*/
+ struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */
+ struct work_struct kick_work;
+ wait_queue_head_t wait_q;
+ struct timer_list timer;
+ void *cmb; /* measurement information */
+ struct list_head cmb_list; /* list of measured devices */
+ u64 cmb_start_time; /* clock value of cmb reset */
+ void *cmb_wait; /* deferred cmb enable/disable */
+};
+
+static inline int ssch(struct subchannel_id schid, volatile struct orb *addr)
+{
+ register struct subchannel_id reg1 asm("1") = schid;
+ int ccode;
+
+ asm volatile(
+ " ssch 0(%2)\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
+ return ccode;
+}
+
+static inline int rsch(struct subchannel_id schid)
+{
+ register struct subchannel_id reg1 asm("1") = schid;
+ int ccode;
+
+ asm volatile(
+ " rsch\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (ccode) : "d" (reg1) : "cc");
+ 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;
+ int ccode;
+
+ asm volatile(
+ " hsch\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (ccode) : "d" (reg1) : "cc");
+ return ccode;
+}
+
+static inline int xsch(struct subchannel_id schid)
+{
+ register struct subchannel_id reg1 asm("1") = schid;
+ int ccode;
+
+ asm volatile(
+ " .insn rre,0xb2760000,%1,0\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (ccode) : "d" (reg1) : "cc");
+ return ccode;
+}
+
+#endif
diff --git a/drivers/s390/cio/ioasm.h b/drivers/s390/cio/ioasm.h
index 7153dd95908..652ea3625f9 100644
--- a/drivers/s390/cio/ioasm.h
+++ b/drivers/s390/cio/ioasm.h
@@ -109,72 +109,6 @@ static inline int tpi( volatile struct tpi_info *addr)
return ccode;
}
-static inline int ssch(struct subchannel_id schid,
- volatile struct orb *addr)
-{
- register struct subchannel_id reg1 asm ("1") = schid;
- int ccode;
-
- asm volatile(
- " ssch 0(%2)\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
- return ccode;
-}
-
-static inline int rsch(struct subchannel_id schid)
-{
- register struct subchannel_id reg1 asm ("1") = schid;
- int ccode;
-
- asm volatile(
- " rsch\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (ccode) : "d" (reg1) : "cc");
- 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;
- int ccode;
-
- asm volatile(
- " hsch\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (ccode) : "d" (reg1) : "cc");
- return ccode;
-}
-
-static inline int xsch(struct subchannel_id schid)
-{
- register struct subchannel_id reg1 asm ("1") = schid;
- int ccode;
-
- asm volatile(
- " .insn rre,0xb2760000,%1,0\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (ccode) : "d" (reg1) : "cc");
- return ccode;
-}
-
static inline int chsc(void *chsc_area)
{
typedef struct { char _[4096]; } addr_type;
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 40a3208c7cf..e2a781b6b21 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -48,11 +48,11 @@
#include <asm/debug.h>
#include <asm/s390_rdev.h>
#include <asm/qdio.h>
+#include <asm/airq.h>
#include "cio.h"
#include "css.h"
#include "device.h"
-#include "airq.h"
#include "qdio.h"
#include "ioasm.h"
#include "chsc.h"
@@ -96,7 +96,7 @@ static debug_info_t *qdio_dbf_slsb_in;
static volatile struct qdio_q *tiq_list=NULL; /* volatile as it could change
during a while loop */
static DEFINE_SPINLOCK(ttiq_list_lock);
-static int register_thinint_result;
+static void *tiqdio_ind;
static void tiqdio_tl(unsigned long);
static DECLARE_TASKLET(tiqdio_tasklet,tiqdio_tl,0);
@@ -399,7 +399,7 @@ qdio_get_indicator(void)
{
int i;
- for (i=1;i<INDICATORS_PER_CACHELINE;i++)
+ for (i = 0; i < INDICATORS_PER_CACHELINE; i++)
if (!indicator_used[i]) {
indicator_used[i]=1;
return indicators+i;
@@ -1408,8 +1408,7 @@ __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
if (q->hydra_gives_outbound_pcis) {
if (!q->siga_sync_done_on_thinints) {
SYNC_MEMORY_ALL;
- } else if ((!q->siga_sync_done_on_outb_tis)&&
- (q->hydra_gives_outbound_pcis)) {
+ } else if (!q->siga_sync_done_on_outb_tis) {
SYNC_MEMORY_ALL_OUTB;
}
} else {
@@ -1911,8 +1910,7 @@ qdio_fill_thresholds(struct qdio_irq *irq_ptr,
}
}
-static int
-tiqdio_thinint_handler(void)
+static void tiqdio_thinint_handler(void *ind, void *drv_data)
{
QDIO_DBF_TEXT4(0,trace,"thin_int");
@@ -1925,7 +1923,6 @@ tiqdio_thinint_handler(void)
tiqdio_clear_global_summary();
tiqdio_inbound_checks();
- return 0;
}
static void
@@ -2445,7 +2442,7 @@ tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
real_addr_dev_st_chg_ind=0;
} else {
real_addr_local_summary_bit=
- virt_to_phys((volatile void *)indicators);
+ virt_to_phys((volatile void *)tiqdio_ind);
real_addr_dev_st_chg_ind=
virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
}
@@ -3740,23 +3737,25 @@ static void
tiqdio_register_thinints(void)
{
char dbf_text[20];
- register_thinint_result=
- s390_register_adapter_interrupt(&tiqdio_thinint_handler);
- if (register_thinint_result) {
- sprintf(dbf_text,"regthn%x",(register_thinint_result&0xff));
+
+ tiqdio_ind =
+ s390_register_adapter_interrupt(&tiqdio_thinint_handler, NULL);
+ if (IS_ERR(tiqdio_ind)) {
+ sprintf(dbf_text, "regthn%lx", PTR_ERR(tiqdio_ind));
QDIO_DBF_TEXT0(0,setup,dbf_text);
QDIO_PRINT_ERR("failed to register adapter handler " \
- "(rc=%i).\nAdapter interrupts might " \
+ "(rc=%li).\nAdapter interrupts might " \
"not work. Continuing.\n",
- register_thinint_result);
+ PTR_ERR(tiqdio_ind));
+ tiqdio_ind = NULL;
}
}
static void
tiqdio_unregister_thinints(void)
{
- if (!register_thinint_result)
- s390_unregister_adapter_interrupt(&tiqdio_thinint_handler);
+ if (tiqdio_ind)
+ s390_unregister_adapter_interrupt(tiqdio_ind);
}
static int
@@ -3768,8 +3767,8 @@ qdio_get_qdio_memory(void)
for (i=1;i<INDICATORS_PER_CACHELINE;i++)
indicator_used[i]=0;
indicators = kzalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
- GFP_KERNEL);
- if (!indicators)
+ GFP_KERNEL);
+ if (!indicators)
return -ENOMEM;
return 0;
}
@@ -3780,7 +3779,6 @@ qdio_release_qdio_memory(void)
kfree(indicators);
}
-
static void
qdio_unregister_dbf_views(void)
{
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 6d7aad18f6f..37870e4e938 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -57,7 +57,7 @@
of the queue to 0 */
#define QDIO_ESTABLISH_TIMEOUT (1*HZ)
-#define QDIO_ACTIVATE_TIMEOUT ((5*HZ)>>10)
+#define QDIO_ACTIVATE_TIMEOUT (5*HZ)
#define QDIO_CLEANUP_CLEAR_TIMEOUT (20*HZ)
#define QDIO_CLEANUP_HALT_TIMEOUT (10*HZ)
#define QDIO_FORCE_CHECK_TIMEOUT (10*HZ)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-07 07:37:04 +0000