aboutsummaryrefslogtreecommitdiff
path: root/drivers/s390
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/block/dasd.c50
-rw-r--r--drivers/s390/block/dasd_devmap.c102
-rw-r--r--drivers/s390/block/dasd_eckd.c51
-rw-r--r--drivers/s390/block/dasd_eckd.h46
-rw-r--r--drivers/s390/block/dasd_erp.c8
-rw-r--r--drivers/s390/block/dasd_int.h12
-rw-r--r--drivers/s390/block/dasd_proc.c17
-rw-r--r--drivers/s390/char/keyboard.c2
-rw-r--r--drivers/s390/char/sclp_rw.c2
-rw-r--r--drivers/s390/char/tape_3590.c22
-rw-r--r--drivers/s390/char/tape_block.c17
-rw-r--r--drivers/s390/char/tape_core.c10
-rw-r--r--drivers/s390/char/tape_std.h1
-rw-r--r--drivers/s390/cio/blacklist.c4
-rw-r--r--drivers/s390/cio/chsc.c30
-rw-r--r--drivers/s390/cio/cio.c2
-rw-r--r--drivers/s390/cio/cio_debug.h22
-rw-r--r--drivers/s390/cio/qdio.c36
-rw-r--r--drivers/s390/net/lcs.c13
-rw-r--r--drivers/s390/s390mach.c33
20 files changed, 349 insertions, 131 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 0a9f12c4e91..cfb1fff3787 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -315,6 +315,11 @@ dasd_increase_state(struct dasd_device *device)
rc = dasd_state_basic_to_ready(device);
if (!rc &&
+ device->state == DASD_STATE_UNFMT &&
+ device->target > DASD_STATE_UNFMT)
+ rc = -EPERM;
+
+ if (!rc &&
device->state == DASD_STATE_READY &&
device->target >= DASD_STATE_ONLINE)
rc = dasd_state_ready_to_online(device);
@@ -1257,25 +1262,28 @@ __dasd_start_head(struct dasd_device * device)
if (list_empty(&device->ccw_queue))
return;
cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, list);
- /* check FAILFAST */
+ if (cqr->status != DASD_CQR_QUEUED)
+ return;
+ /* Non-temporary stop condition will trigger fail fast */
if (device->stopped & ~DASD_STOPPED_PENDING &&
test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) &&
(!dasd_eer_enabled(device))) {
cqr->status = DASD_CQR_FAILED;
dasd_schedule_bh(device);
+ return;
}
- if ((cqr->status == DASD_CQR_QUEUED) &&
- (!device->stopped)) {
- /* try to start the first I/O that can be started */
- rc = device->discipline->start_IO(cqr);
- if (rc == 0)
- dasd_set_timer(device, cqr->expires);
- else if (rc == -EACCES) {
- dasd_schedule_bh(device);
- } else
- /* Hmpf, try again in 1/2 sec */
- dasd_set_timer(device, 50);
- }
+ /* Don't try to start requests if device is stopped */
+ if (device->stopped)
+ return;
+
+ rc = device->discipline->start_IO(cqr);
+ if (rc == 0)
+ dasd_set_timer(device, cqr->expires);
+ else if (rc == -EACCES) {
+ dasd_schedule_bh(device);
+ } else
+ /* Hmpf, try again in 1/2 sec */
+ dasd_set_timer(device, 50);
}
/*
@@ -1968,7 +1976,7 @@ int
dasd_generic_set_offline (struct ccw_device *cdev)
{
struct dasd_device *device;
- int max_count;
+ int max_count, open_count;
device = dasd_device_from_cdev(cdev);
if (IS_ERR(device))
@@ -1985,10 +1993,16 @@ dasd_generic_set_offline (struct ccw_device *cdev)
* in the other openers.
*/
max_count = device->bdev ? 0 : -1;
- if (atomic_read(&device->open_count) > max_count) {
- printk (KERN_WARNING "Can't offline dasd device with open"
- " count = %i.\n",
- atomic_read(&device->open_count));
+ open_count = (int) atomic_read(&device->open_count);
+ if (open_count > max_count) {
+ if (open_count > 0)
+ printk (KERN_WARNING "Can't offline dasd device with "
+ "open count = %i.\n",
+ open_count);
+ else
+ printk (KERN_WARNING "%s",
+ "Can't offline dasd device due to internal "
+ "use\n");
clear_bit(DASD_FLAG_OFFLINE, &device->flags);
dasd_put_device(device);
return -EBUSY;
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index c1c6f138115..216bc4fba19 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -45,6 +45,7 @@ struct dasd_devmap {
unsigned int devindex;
unsigned short features;
struct dasd_device *device;
+ struct dasd_uid uid;
};
/*
@@ -716,6 +717,68 @@ dasd_discipline_show(struct device *dev, struct device_attribute *attr, char *bu
static DEVICE_ATTR(discipline, 0444, dasd_discipline_show, NULL);
+static ssize_t
+dasd_alias_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dasd_devmap *devmap;
+ int alias;
+
+ devmap = dasd_find_busid(dev->bus_id);
+ spin_lock(&dasd_devmap_lock);
+ if (!IS_ERR(devmap))
+ alias = devmap->uid.alias;
+ else
+ alias = 0;
+ spin_unlock(&dasd_devmap_lock);
+
+ return sprintf(buf, alias ? "1\n" : "0\n");
+}
+
+static DEVICE_ATTR(alias, 0444, dasd_alias_show, NULL);
+
+static ssize_t
+dasd_vendor_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dasd_devmap *devmap;
+ char *vendor;
+
+ devmap = dasd_find_busid(dev->bus_id);
+ spin_lock(&dasd_devmap_lock);
+ if (!IS_ERR(devmap) && strlen(devmap->uid.vendor) > 0)
+ vendor = devmap->uid.vendor;
+ else
+ vendor = "";
+ spin_unlock(&dasd_devmap_lock);
+
+ return snprintf(buf, PAGE_SIZE, "%s\n", vendor);
+}
+
+static DEVICE_ATTR(vendor, 0444, dasd_vendor_show, NULL);
+
+#define UID_STRLEN ( /* vendor */ 3 + 1 + /* serial */ 14 + 1 +\
+ /* SSID */ 4 + 1 + /* unit addr */ 2 + 1)
+
+static ssize_t
+dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dasd_devmap *devmap;
+ char uid[UID_STRLEN];
+
+ devmap = dasd_find_busid(dev->bus_id);
+ spin_lock(&dasd_devmap_lock);
+ if (!IS_ERR(devmap) && strlen(devmap->uid.vendor) > 0)
+ snprintf(uid, sizeof(uid), "%s.%s.%04x.%02x",
+ devmap->uid.vendor, devmap->uid.serial,
+ devmap->uid.ssid, devmap->uid.unit_addr);
+ else
+ uid[0] = 0;
+ spin_unlock(&dasd_devmap_lock);
+
+ return snprintf(buf, PAGE_SIZE, "%s\n", uid);
+}
+
+static DEVICE_ATTR(uid, 0444, dasd_uid_show, NULL);
+
/*
* extended error-reporting
*/
@@ -759,6 +822,9 @@ static DEVICE_ATTR(eer_enabled, 0644, dasd_eer_show, dasd_eer_store);
static struct attribute * dasd_attrs[] = {
&dev_attr_readonly.attr,
&dev_attr_discipline.attr,
+ &dev_attr_alias.attr,
+ &dev_attr_vendor.attr,
+ &dev_attr_uid.attr,
&dev_attr_use_diag.attr,
&dev_attr_eer_enabled.attr,
NULL,
@@ -768,6 +834,42 @@ static struct attribute_group dasd_attr_group = {
.attrs = dasd_attrs,
};
+
+/*
+ * Return copy of the device unique identifier.
+ */
+int
+dasd_get_uid(struct ccw_device *cdev, struct dasd_uid *uid)
+{
+ struct dasd_devmap *devmap;
+
+ devmap = dasd_find_busid(cdev->dev.bus_id);
+ if (IS_ERR(devmap))
+ return PTR_ERR(devmap);
+ spin_lock(&dasd_devmap_lock);
+ *uid = devmap->uid;
+ spin_unlock(&dasd_devmap_lock);
+ return 0;
+}
+
+/*
+ * Register the given device unique identifier into devmap struct.
+ */
+int
+dasd_set_uid(struct ccw_device *cdev, struct dasd_uid *uid)
+{
+ struct dasd_devmap *devmap;
+
+ devmap = dasd_find_busid(cdev->dev.bus_id);
+ if (IS_ERR(devmap))
+ return PTR_ERR(devmap);
+ spin_lock(&dasd_devmap_lock);
+ devmap->uid = *uid;
+ spin_unlock(&dasd_devmap_lock);
+ return 0;
+}
+EXPORT_SYMBOL(dasd_set_uid);
+
/*
* Return value of the specified feature.
*/
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index ee09ef33d08..7d5a6cee4bd 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -446,6 +446,39 @@ dasd_eckd_cdl_reclen(int recid)
return LABEL_SIZE;
}
+/*
+ * Generate device unique id that specifies the physical device.
+ */
+static int
+dasd_eckd_generate_uid(struct dasd_device *device, struct dasd_uid *uid)
+{
+ struct dasd_eckd_private *private;
+ struct dasd_eckd_confdata *confdata;
+
+ private = (struct dasd_eckd_private *) device->private;
+ if (!private)
+ return -ENODEV;
+ confdata = &private->conf_data;
+ if (!confdata)
+ return -ENODEV;
+
+ memset(uid, 0, sizeof(struct dasd_uid));
+ strncpy(uid->vendor, confdata->ned1.HDA_manufacturer,
+ sizeof(uid->vendor) - 1);
+ EBCASC(uid->vendor, sizeof(uid->vendor) - 1);
+ strncpy(uid->serial, confdata->ned1.HDA_location,
+ sizeof(uid->serial) - 1);
+ EBCASC(uid->serial, sizeof(uid->serial) - 1);
+ uid->ssid = confdata->neq.subsystemID;
+ if (confdata->ned2.sneq.flags == 0x40) {
+ uid->alias = 1;
+ uid->unit_addr = confdata->ned2.sneq.base_unit_addr;
+ } else
+ uid->unit_addr = confdata->ned1.unit_addr;
+
+ return 0;
+}
+
static int
dasd_eckd_read_conf(struct dasd_device *device)
{
@@ -507,11 +540,15 @@ dasd_eckd_read_conf(struct dasd_device *device)
return 0;
}
-
+/*
+ * Check device characteristics.
+ * If the device is accessible using ECKD discipline, the device is enabled.
+ */
static int
dasd_eckd_check_characteristics(struct dasd_device *device)
{
struct dasd_eckd_private *private;
+ struct dasd_uid uid;
void *rdc_data;
int rc;
@@ -536,6 +573,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
/* Read Device Characteristics */
rdc_data = (void *) &(private->rdc_data);
+ memset(rdc_data, 0, sizeof(rdc_data));
rc = read_dev_chars(device->cdev, &rdc_data, 64);
if (rc) {
DEV_MESSAGE(KERN_WARNING, device,
@@ -556,8 +594,17 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
/* Read Configuration Data */
rc = dasd_eckd_read_conf (device);
- return rc;
+ if (rc)
+ return rc;
+
+ /* Generate device unique id and register in devmap */
+ rc = dasd_eckd_generate_uid(device, &uid);
+ if (rc)
+ return rc;
+ rc = dasd_set_uid(device->cdev, &uid);
+
+ return rc;
}
static struct dasd_ccw_req *
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index ad8524bb7bb..d5734e976e1 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -228,26 +228,36 @@ struct dasd_eckd_confdata {
unsigned char HDA_manufacturer[3];
unsigned char HDA_location[2];
unsigned char HDA_seqno[12];
- __u16 ID;
+ __u8 ID;
+ __u8 unit_addr;
} __attribute__ ((packed)) ned1;
- struct {
+ union {
struct {
- unsigned char identifier:2;
- unsigned char token_id:1;
- unsigned char sno_valid:1;
- unsigned char subst_sno:1;
- unsigned char recNED:1;
- unsigned char emuNED:1;
- unsigned char reserved:1;
- } __attribute__ ((packed)) flags;
- __u8 descriptor;
- __u8 reserved[2];
- unsigned char dev_type[6];
- unsigned char dev_model[3];
- unsigned char DASD_manufacturer[3];
- unsigned char DASD_location[2];
- unsigned char DASD_seqno[12];
- __u16 ID;
+ struct {
+ unsigned char identifier:2;
+ unsigned char token_id:1;
+ unsigned char sno_valid:1;
+ unsigned char subst_sno:1;
+ unsigned char recNED:1;
+ unsigned char emuNED:1;
+ unsigned char reserved:1;
+ } __attribute__ ((packed)) flags;
+ __u8 descriptor;
+ __u8 reserved[2];
+ unsigned char dev_type[6];
+ unsigned char dev_model[3];
+ unsigned char DASD_manufacturer[3];
+ unsigned char DASD_location[2];
+ unsigned char DASD_seqno[12];
+ __u16 ID;
+ } __attribute__ ((packed)) ned;
+ struct {
+ unsigned char flags; /* byte 0 */
+ unsigned char res2[7]; /* byte 1- 7 */
+ unsigned char sua_flags; /* byte 8 */
+ __u8 base_unit_addr; /* byte 9 */
+ unsigned char res3[22]; /* byte 10-31 */
+ } __attribute__ ((packed)) sneq;
} __attribute__ ((packed)) ned2;
struct {
struct {
diff --git a/drivers/s390/block/dasd_erp.c b/drivers/s390/block/dasd_erp.c
index 8fd71ab02ef..b842377cb0c 100644
--- a/drivers/s390/block/dasd_erp.c
+++ b/drivers/s390/block/dasd_erp.c
@@ -32,9 +32,8 @@ dasd_alloc_erp_request(char *magic, int cplength, int datasize,
int size;
/* Sanity checks */
- if ( magic == NULL || datasize > PAGE_SIZE ||
- (cplength*sizeof(struct ccw1)) > PAGE_SIZE)
- BUG();
+ BUG_ON( magic == NULL || datasize > PAGE_SIZE ||
+ (cplength*sizeof(struct ccw1)) > PAGE_SIZE);
size = (sizeof(struct dasd_ccw_req) + 7L) & -8L;
if (cplength > 0)
@@ -125,8 +124,7 @@ dasd_default_erp_postaction(struct dasd_ccw_req * cqr)
struct dasd_device *device;
int success;
- if (cqr->refers == NULL || cqr->function == NULL)
- BUG();
+ BUG_ON(cqr->refers == NULL || cqr->function == NULL);
device = cqr->device;
success = cqr->status == DASD_CQR_DONE;
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 4293ba82752..d4b13e300a7 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -268,6 +268,16 @@ struct dasd_discipline {
extern struct dasd_discipline *dasd_diag_discipline_pointer;
+/*
+ * Unique identifier for dasd device.
+ */
+struct dasd_uid {
+ __u8 alias;
+ char vendor[4];
+ char serial[15];
+ __u16 ssid;
+ __u8 unit_addr;
+};
/*
* Notification numbers for extended error reporting notifications:
@@ -516,6 +526,8 @@ void dasd_devmap_exit(void);
struct dasd_device *dasd_create_device(struct ccw_device *);
void dasd_delete_device(struct dasd_device *);
+int dasd_get_uid(struct ccw_device *, struct dasd_uid *);
+int dasd_set_uid(struct ccw_device *, struct dasd_uid *);
int dasd_get_feature(struct ccw_device *, int);
int dasd_set_feature(struct ccw_device *, int, int);
diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c
index 1aa3c261718..ad23aede356 100644
--- a/drivers/s390/block/dasd_proc.c
+++ b/drivers/s390/block/dasd_proc.c
@@ -294,23 +294,40 @@ out_error:
#endif /* CONFIG_DASD_PROFILE */
}
+/*
+ * Create dasd proc-fs entries.
+ * In case creation failed, cleanup and return -ENOENT.
+ */
int
dasd_proc_init(void)
{
dasd_proc_root_entry = proc_mkdir("dasd", &proc_root);
+ if (!dasd_proc_root_entry)
+ goto out_nodasd;
dasd_proc_root_entry->owner = THIS_MODULE;
dasd_devices_entry = create_proc_entry("devices",
S_IFREG | S_IRUGO | S_IWUSR,
dasd_proc_root_entry);
+ if (!dasd_devices_entry)
+ goto out_nodevices;
dasd_devices_entry->proc_fops = &dasd_devices_file_ops;
dasd_devices_entry->owner = THIS_MODULE;
dasd_statistics_entry = create_proc_entry("statistics",
S_IFREG | S_IRUGO | S_IWUSR,
dasd_proc_root_entry);
+ if (!dasd_statistics_entry)
+ goto out_nostatistics;
dasd_statistics_entry->read_proc = dasd_statistics_read;
dasd_statistics_entry->write_proc = dasd_statistics_write;
dasd_statistics_entry->owner = THIS_MODULE;
return 0;
+
+ out_nostatistics:
+ remove_proc_entry("devices", dasd_proc_root_entry);
+ out_nodevices:
+ remove_proc_entry("dasd", &proc_root);
+ out_nodasd:
+ return -ENOENT;
}
void
diff --git a/drivers/s390/char/keyboard.c b/drivers/s390/char/keyboard.c
index 6badd840340..d4d2ff0a9da 100644
--- a/drivers/s390/char/keyboard.c
+++ b/drivers/s390/char/keyboard.c
@@ -54,7 +54,7 @@ kbd_alloc(void) {
if (!kbd)
goto out;
kbd->key_maps = kzalloc(sizeof(key_maps), GFP_KERNEL);
- if (!key_maps)
+ if (!kbd->key_maps)
goto out_kbd;
for (i = 0; i < ARRAY_SIZE(key_maps); i++) {
if (key_maps[i]) {
diff --git a/drivers/s390/char/sclp_rw.c b/drivers/s390/char/sclp_rw.c
index ac10dfb20a6..91e93c78f57 100644
--- a/drivers/s390/char/sclp_rw.c
+++ b/drivers/s390/char/sclp_rw.c
@@ -24,7 +24,7 @@
/*
* The room for the SCCB (only for writing) is not equal to a pages size
- * (as it is specified as the maximum size in the the SCLP ducumentation)
+ * (as it is specified as the maximum size in the the SCLP documentation)
* because of the additional data structure described above.
*/
#define MAX_SCCB_ROOM (PAGE_SIZE - sizeof(struct sclp_buffer))
diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c
index c3915f60a3a..d71ef1adea5 100644
--- a/drivers/s390/char/tape_3590.c
+++ b/drivers/s390/char/tape_3590.c
@@ -230,14 +230,16 @@ tape_3590_read_attmsg(struct tape_device *device)
* These functions are used to schedule follow-up actions from within an
* interrupt context (like unsolicited interrupts).
*/
+struct work_handler_data {
+ struct tape_device *device;
+ enum tape_op op;
+ struct work_struct work;
+};
+
static void
tape_3590_work_handler(void *data)
{
- struct {
- struct tape_device *device;
- enum tape_op op;
- struct work_struct work;
- } *p = data;
+ struct work_handler_data *p = data;
switch (p->op) {
case TO_MSEN:
@@ -257,11 +259,7 @@ tape_3590_work_handler(void *data)
static int
tape_3590_schedule_work(struct tape_device *device, enum tape_op op)
{
- struct {
- struct tape_device *device;
- enum tape_op op;
- struct work_struct work;
- } *p;
+ struct work_handler_data *p;
if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL)
return -ENOMEM;
@@ -316,7 +314,7 @@ tape_3590_bread(struct tape_device *device, struct request *req)
rq_for_each_bio(bio, req) {
bio_for_each_segment(bv, bio, i) {
- dst = kmap(bv->bv_page) + bv->bv_offset;
+ dst = page_address(bv->bv_page) + bv->bv_offset;
for (off = 0; off < bv->bv_len;
off += TAPEBLOCK_HSEC_SIZE) {
ccw->flags = CCW_FLAG_CC;
@@ -1168,6 +1166,7 @@ tape_3590_setup_device(struct tape_device *device)
static void
tape_3590_cleanup_device(struct tape_device *device)
{
+ flush_scheduled_work();
tape_std_unassign(device);
kfree(device->discdata);
@@ -1234,6 +1233,7 @@ static struct tape_discipline tape_discipline_3590 = {
static struct ccw_device_id tape_3590_ids[] = {
{CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590},
+ {CCW_DEVICE_DEVTYPE(0x3592, 0, 0x3592, 0), .driver_info = tape_3592},
{ /* end of list */ }
};
diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c
index 5ced2725d6c..b70d9269024 100644
--- a/drivers/s390/char/tape_block.c
+++ b/drivers/s390/char/tape_block.c
@@ -198,9 +198,7 @@ tapeblock_request_fn(request_queue_t *queue)
device = (struct tape_device *) queue->queuedata;
DBF_LH(6, "tapeblock_request_fn(device=%p)\n", device);
- if (device == NULL)
- BUG();
-
+ BUG_ON(device == NULL);
tapeblock_trigger_requeue(device);
}
@@ -307,8 +305,7 @@ tapeblock_revalidate_disk(struct gendisk *disk)
int rc;
device = (struct tape_device *) disk->private_data;
- if (!device)
- BUG();
+ BUG_ON(!device);
if (!device->blk_data.medium_changed)
return 0;
@@ -435,16 +432,14 @@ tapeblock_ioctl(
) {
int rc;
int minor;
- struct gendisk *disk = inode->i_bdev->bd_disk;
- struct tape_device *device = disk->private_data;
+ struct gendisk *disk;
+ struct tape_device *device;
rc = 0;
disk = inode->i_bdev->bd_disk;
- if (!disk)
- BUG();
+ BUG_ON(!disk);
device = disk->private_data;
- if (!device)
- BUG();
+ BUG_ON(!device);
minor = iminor(inode);
DBF_LH(6, "tapeblock_ioctl(0x%0x)\n", command);
diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c
index 389ee2c0f44..e6e4086d322 100644
--- a/drivers/s390/char/tape_core.c
+++ b/drivers/s390/char/tape_core.c
@@ -210,18 +210,14 @@ tape_state_set(struct tape_device *device, enum tape_state newstate)
return;
}
DBF_EVENT(4, "ts. dev: %x\n", device->first_minor);
- if (device->tape_state < TO_SIZE && device->tape_state >= 0)
- str = tape_state_verbose[device->tape_state];
- else
- str = "UNKNOWN TS";
- DBF_EVENT(4, "old ts: %s\n", str);
- if (device->tape_state < TO_SIZE && device->tape_state >=0 )
+ DBF_EVENT(4, "old ts:\t\n");
+ if (device->tape_state < TS_SIZE && device->tape_state >=0 )
str = tape_state_verbose[device->tape_state];
else
str = "UNKNOWN TS";
DBF_EVENT(4, "%s\n", str);
DBF_EVENT(4, "new ts:\t\n");
- if (newstate < TO_SIZE && newstate >= 0)
+ if (newstate < TS_SIZE && newstate >= 0)
str = tape_state_verbose[newstate];
else
str = "UNKNOWN TS";
diff --git a/drivers/s390/char/tape_std.h b/drivers/s390/char/tape_std.h
index 2d311798edf..1fc95235934 100644
--- a/drivers/s390/char/tape_std.h
+++ b/drivers/s390/char/tape_std.h
@@ -153,6 +153,7 @@ enum s390_tape_type {
tape_3480,
tape_3490,
tape_3590,
+ tape_3592,
};
#endif // _TAPE_STD_H
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index cb8e2e672b6..0960bef7b19 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -414,11 +414,11 @@ cio_ignore_proc_init (void)
entry = create_proc_entry ("cio_ignore", S_IFREG | S_IRUGO | S_IWUSR,
&proc_root);
if (!entry)
- return 0;
+ return -ENOENT;
entry->proc_fops = &cio_ignore_proc_fops;
- return 1;
+ return 0;
}
__initcall (cio_ignore_proc_init);
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 6412b2c3edd..72187e54dca 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -242,28 +242,10 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
if (sch->vpm == mask)
goto out_unreg;
- if ((sch->schib.scsw.actl & (SCSW_ACTL_CLEAR_PEND |
- SCSW_ACTL_HALT_PEND |
- SCSW_ACTL_START_PEND |
- SCSW_ACTL_RESUME_PEND)) &&
- (sch->schib.pmcw.lpum == mask)) {
- int cc = cio_cancel(sch);
-
- if (cc == -ENODEV)
- goto out_unreg;
-
- if (cc == -EINVAL) {
- cc = cio_clear(sch);
- if (cc == -ENODEV)
- goto out_unreg;
- /* Call handler. */
- if (sch->driver && sch->driver->termination)
- sch->driver->termination(&sch->dev);
- goto out_unlock;
- }
- } else if ((sch->schib.scsw.actl & SCSW_ACTL_DEVACT) &&
- (sch->schib.scsw.actl & SCSW_ACTL_SCHACT) &&
- (sch->schib.pmcw.lpum == mask)) {
+ if ((sch->schib.scsw.actl & SCSW_ACTL_DEVACT) &&
+ (sch->schib.scsw.actl & SCSW_ACTL_SCHACT) &&
+ (sch->schib.pmcw.lpum == mask) &&
+ (sch->vpm == 0)) {
int cc;
cc = cio_clear(sch);
@@ -653,13 +635,13 @@ __chp_add(struct subchannel_id schid, void *data)
if (sch->schib.pmcw.chpid[i] == chp->id) {
if (stsch(sch->schid, &sch->schib) != 0) {
/* Endgame. */
- spin_unlock(&sch->lock);
+ spin_unlock_irq(&sch->lock);
return -ENXIO;
}
break;
}
if (i==8) {
- spin_unlock(&sch->lock);
+ spin_unlock_irq(&sch->lock);
return 0;
}
sch->lpm = ((sch->schib.pmcw.pim &
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index cbb86fa5f29..5b20d8c9c02 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -67,7 +67,7 @@ cio_debug_init (void)
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, 8);
+ cio_debug_trace_id = debug_register ("cio_trace", 16, 4, 16);
if (!cio_debug_trace_id)
goto out_unregister;
debug_register_view (cio_debug_trace_id, &debug_hex_ascii_view);
diff --git a/drivers/s390/cio/cio_debug.h b/drivers/s390/cio/cio_debug.h
index 6af8b27d366..f88844adae1 100644
--- a/drivers/s390/cio/cio_debug.h
+++ b/drivers/s390/cio/cio_debug.h
@@ -3,6 +3,11 @@
#include <asm/debug.h>
+/* for use of debug feature */
+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 { \
debug_text_event(cio_debug_trace_id, imp, txt); \
} while (0)
@@ -15,18 +20,19 @@
debug_sprintf_event(cio_debug_crw_id, imp , ##args); \
} while (0)
-#define CIO_HEX_EVENT(imp, args...) do { \
- debug_event(cio_debug_trace_id, imp, ##args); \
- } while (0)
+static inline void
+CIO_HEX_EVENT(int level, void *data, int length)
+{
+ while (length > 0) {
+ debug_event(cio_debug_trace_id, level, data, length);
+ length -= cio_debug_trace_id->buf_size;
+ data += cio_debug_trace_id->buf_size;
+ }
+}
#define CIO_DEBUG(printk_level,event_level,msg...) ({ \
if (cio_show_msg) printk(printk_level msg); \
CIO_MSG_EVENT (event_level, msg); \
})
-/* for use of debug feature */
-extern debug_info_t *cio_debug_msg_id;
-extern debug_info_t *cio_debug_trace_id;
-extern debug_info_t *cio_debug_crw_id;
-
#endif
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 814f9258ce0..96f519281d9 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -38,6 +38,7 @@
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/timer.h>
+#include <linux/mempool.h>
#include <asm/ccwdev.h>
#include <asm/io.h>
@@ -80,6 +81,8 @@ static int indicator_used[INDICATORS_PER_CACHELINE];
static __u32 * volatile indicators;
static __u32 volatile spare_indicator;
static atomic_t spare_indicator_usecount;
+#define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
+static mempool_t *qdio_mempool_scssc;
static debug_info_t *qdio_dbf_setup;
static debug_info_t *qdio_dbf_sbal;
@@ -1637,7 +1640,7 @@ next:
}
kfree(irq_ptr->qdr);
- kfree(irq_ptr);
+ free_page((unsigned long) irq_ptr);
}
static void
@@ -2304,7 +2307,7 @@ qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
QDIO_DBF_TEXT0(0,setup,"getssqd");
qdioac = 0;
- ssqd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ ssqd_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
if (!ssqd_area) {
QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
"SIGAs for sch x%x.\n", irq_ptr->schid.sch_no);
@@ -2364,7 +2367,7 @@ qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
out:
qdio_check_subchannel_qebsm(irq_ptr, qdioac,
ssqd_area->sch_token);
- free_page ((unsigned long) ssqd_area);
+ mempool_free(ssqd_area, qdio_mempool_scssc);
irq_ptr->qdioac = qdioac;
}
@@ -2458,7 +2461,7 @@ tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
}
- scssc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ scssc_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
if (!scssc_area) {
QDIO_PRINT_WARN("No memory for setting indicators on " \
"subchannel 0.%x.%x.\n",
@@ -2514,7 +2517,7 @@ tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
result = 0;
out:
- free_page ((unsigned long) scssc_area);
+ mempool_free(scssc_area, qdio_mempool_scssc);
return result;
}
@@ -2543,7 +2546,7 @@ tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
if (!irq_ptr->is_thinint_irq)
return -ENODEV;
- scsscf_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ scsscf_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
if (!scsscf_area) {
QDIO_PRINT_WARN("No memory for setting delay target on " \
"subchannel 0.%x.%x.\n",
@@ -2581,7 +2584,7 @@ tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
result = 0; /* not critical */
out:
- free_page ((unsigned long) scsscf_area);
+ mempool_free(scsscf_area, qdio_mempool_scssc);
return result;
}
@@ -2980,7 +2983,7 @@ qdio_allocate(struct qdio_initialize *init_data)
qdio_allocate_do_dbf(init_data);
/* create irq */
- irq_ptr = kzalloc(sizeof(struct qdio_irq), GFP_KERNEL | GFP_DMA);
+ irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
@@ -2995,7 +2998,7 @@ qdio_allocate(struct qdio_initialize *init_data)
/* QDR must be in DMA area since CCW data address is only 32 bit */
irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
if (!(irq_ptr->qdr)) {
- kfree(irq_ptr);
+ free_page((unsigned long) irq_ptr);
QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
return -ENOMEM;
}
@@ -3780,6 +3783,16 @@ oom:
return -ENOMEM;
}
+static void *qdio_mempool_alloc(gfp_t gfp_mask, void *size)
+{
+ return (void *) get_zeroed_page(gfp_mask|GFP_DMA);
+}
+
+static void qdio_mempool_free(void *element, void *size)
+{
+ free_page((unsigned long) element);
+}
+
static int __init
init_QDIO(void)
{
@@ -3809,6 +3822,10 @@ init_QDIO(void)
qdio_add_procfs_entry();
+ qdio_mempool_scssc = mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS,
+ qdio_mempool_alloc,
+ qdio_mempool_free, NULL);
+
if (tiqdio_check_chsc_availability())
QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
@@ -3824,6 +3841,7 @@ cleanup_QDIO(void)
qdio_remove_procfs_entry();
qdio_release_qdio_memory();
qdio_unregister_dbf_views();
+ mempool_destroy(qdio_mempool_scssc);
printk("qdio: %s: module removed\n",version);
}
diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index edcf05d5d56..5d6b7a57b02 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -675,9 +675,8 @@ lcs_ready_buffer(struct lcs_channel *channel, struct lcs_buffer *buffer)
int index, rc;
LCS_DBF_TEXT(5, trace, "rdybuff");
- if (buffer->state != BUF_STATE_LOCKED &&
- buffer->state != BUF_STATE_PROCESSED)
- BUG();
+ BUG_ON(buffer->state != BUF_STATE_LOCKED &&
+ buffer->state != BUF_STATE_PROCESSED);
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
buffer->state = BUF_STATE_READY;
index = buffer - channel->iob;
@@ -701,8 +700,7 @@ __lcs_processed_buffer(struct lcs_channel *channel, struct lcs_buffer *buffer)
int index, prev, next;
LCS_DBF_TEXT(5, trace, "prcsbuff");
- if (buffer->state != BUF_STATE_READY)
- BUG();
+ BUG_ON(buffer->state != BUF_STATE_READY);
buffer->state = BUF_STATE_PROCESSED;
index = buffer - channel->iob;
prev = (index - 1) & (LCS_NUM_BUFFS - 1);
@@ -734,9 +732,8 @@ lcs_release_buffer(struct lcs_channel *channel, struct lcs_buffer *buffer)
unsigned long flags;
LCS_DBF_TEXT(5, trace, "relbuff");
- if (buffer->state != BUF_STATE_LOCKED &&
- buffer->state != BUF_STATE_PROCESSED)
- BUG();
+ BUG_ON(buffer->state != BUF_STATE_LOCKED &&
+ buffer->state != BUF_STATE_PROCESSED);
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
buffer->state = BUF_STATE_EMPTY;
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
diff --git a/drivers/s390/s390mach.c b/drivers/s390/s390mach.c
index 3bf46660351..5ae14803091 100644
--- a/drivers/s390/s390mach.c
+++ b/drivers/s390/s390mach.c
@@ -362,12 +362,19 @@ s390_revalidate_registers(struct mci *mci)
return kill_task;
}
+#define MAX_IPD_COUNT 29
+#define MAX_IPD_TIME (5 * 60 * 100 * 1000) /* 5 minutes */
+
/*
* machine check handler.
*/
void
s390_do_machine_check(struct pt_regs *regs)
{
+ static DEFINE_SPINLOCK(ipd_lock);
+ static unsigned long long last_ipd;
+ static int ipd_count;
+ unsigned long long tmp;
struct mci *mci;
struct mcck_struct *mcck;
int umode;
@@ -404,11 +411,27 @@ s390_do_machine_check(struct pt_regs *regs)
s390_handle_damage("processing backup machine "
"check with damage.");
}
- if (!umode)
- s390_handle_damage("processing backup machine "
- "check in kernel mode.");
- mcck->kill_task = 1;
- mcck->mcck_code = *(unsigned long long *) mci;
+
+ /*
+ * Nullifying exigent condition, therefore we might
+ * retry this instruction.
+ */
+
+ spin_lock(&ipd_lock);
+
+ tmp = get_clock();
+
+ if (((tmp - last_ipd) >> 12) < MAX_IPD_TIME)
+ ipd_count++;
+ else
+ ipd_count = 1;
+
+ last_ipd = tmp;
+
+ if (ipd_count == MAX_IPD_COUNT)
+ s390_handle_damage("too many ipd retries.");
+
+ spin_unlock(&ipd_lock);
}
else {
/* Processing damage -> stopping machine */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 05:27:07 +0000