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-rw-r--r--drivers/s390/char/Makefile6
-rw-r--r--drivers/s390/char/con3215.c8
-rw-r--r--drivers/s390/char/con3270.c13
-rw-r--r--drivers/s390/char/fs3270.c7
-rw-r--r--drivers/s390/char/monwriter.c2
-rw-r--r--drivers/s390/char/raw3270.c38
-rw-r--r--drivers/s390/char/raw3270.h3
-rw-r--r--drivers/s390/char/sclp.c184
-rw-r--r--drivers/s390/char/sclp.h20
-rw-r--r--drivers/s390/char/sclp_cmd.c212
-rw-r--r--drivers/s390/char/sclp_con.c31
-rw-r--r--drivers/s390/char/sclp_config.c2
-rw-r--r--drivers/s390/char/sclp_ctl.c144
-rw-r--r--drivers/s390/char/sclp_early.c315
-rw-r--r--drivers/s390/char/sclp_sdias.c78
-rw-r--r--drivers/s390/char/sclp_sdias.h46
-rw-r--r--drivers/s390/char/sclp_vt220.c55
-rw-r--r--drivers/s390/char/tape_class.c2
-rw-r--r--drivers/s390/char/tape_std.c3
-rw-r--r--drivers/s390/char/tty3270.c17
-rw-r--r--drivers/s390/char/vmlogrdr.c4
-rw-r--r--drivers/s390/char/vmur.c6
-rw-r--r--drivers/s390/char/vmwatchdog.c337
-rw-r--r--drivers/s390/char/zcore.c92
24 files changed, 929 insertions, 696 deletions
diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile
index f3c32520744..78b6ace7edc 100644
--- a/drivers/s390/char/Makefile
+++ b/drivers/s390/char/Makefile
@@ -3,7 +3,8 @@
#
obj-y += ctrlchar.o keyboard.o defkeymap.o sclp.o sclp_rw.o sclp_quiesce.o \
- sclp_cmd.o sclp_config.o sclp_cpi_sys.o sclp_ocf.o
+ sclp_cmd.o sclp_config.o sclp_cpi_sys.o sclp_ocf.o sclp_ctl.o \
+ sclp_early.o
obj-$(CONFIG_TN3270) += raw3270.o
obj-$(CONFIG_TN3270_CONSOLE) += con3270.o
@@ -18,7 +19,6 @@ obj-$(CONFIG_SCLP_VT220_TTY) += sclp_vt220.o
obj-$(CONFIG_SCLP_CPI) += sclp_cpi.o
obj-$(CONFIG_SCLP_ASYNC) += sclp_async.o
-obj-$(CONFIG_ZVM_WATCHDOG) += vmwatchdog.o
obj-$(CONFIG_VMLOGRDR) += vmlogrdr.o
obj-$(CONFIG_VMCP) += vmcp.o
@@ -32,4 +32,4 @@ obj-$(CONFIG_MONWRITER) += monwriter.o
obj-$(CONFIG_S390_VMUR) += vmur.o
zcore_mod-objs := sclp_sdias.o zcore.o
-obj-$(CONFIG_ZFCPDUMP) += zcore_mod.o
+obj-$(CONFIG_CRASH_DUMP) += zcore_mod.o
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index eb5d22795c4..5af7f0bd612 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -922,7 +922,7 @@ static int __init con3215_init(void)
raw3215_freelist = req;
}
- cdev = ccw_device_probe_console();
+ cdev = ccw_device_create_console(&raw3215_ccw_driver);
if (IS_ERR(cdev))
return -ENODEV;
@@ -932,6 +932,12 @@ static int __init con3215_init(void)
cdev->handler = raw3215_irq;
raw->flags |= RAW3215_FIXED;
+ if (ccw_device_enable_console(cdev)) {
+ ccw_device_destroy_console(cdev);
+ raw3215_free_info(raw);
+ raw3215[0] = NULL;
+ return -ENODEV;
+ }
/* Request the console irq */
if (raw3215_startup(raw) != 0) {
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c
index 699fd3e363d..75ffe9980c3 100644
--- a/drivers/s390/char/con3270.c
+++ b/drivers/s390/char/con3270.c
@@ -7,6 +7,7 @@
* Copyright IBM Corp. 2003, 2009
*/
+#include <linux/module.h>
#include <linux/console.h>
#include <linux/init.h>
#include <linux/interrupt.h>
@@ -30,6 +31,9 @@
static struct raw3270_fn con3270_fn;
+static bool auto_update = 1;
+module_param(auto_update, bool, 0);
+
/*
* Main 3270 console view data structure.
*/
@@ -204,6 +208,8 @@ con3270_update(struct con3270 *cp)
struct string *s, *n;
int rc;
+ if (!auto_update && !raw3270_view_active(&cp->view))
+ return;
if (cp->view.dev)
raw3270_activate_view(&cp->view);
@@ -529,6 +535,7 @@ con3270_flush(void)
if (!cp->view.dev)
return;
raw3270_pm_unfreeze(&cp->view);
+ raw3270_activate_view(&cp->view);
spin_lock_irqsave(&cp->view.lock, flags);
con3270_wait_write(cp);
cp->nr_up = 0;
@@ -576,7 +583,6 @@ static struct console con3270 = {
static int __init
con3270_init(void)
{
- struct ccw_device *cdev;
struct raw3270 *rp;
void *cbuf;
int i;
@@ -591,10 +597,7 @@ con3270_init(void)
cpcmd("TERM AUTOCR OFF", NULL, 0, NULL);
}
- cdev = ccw_device_probe_console();
- if (IS_ERR(cdev))
- return -ENODEV;
- rp = raw3270_setup_console(cdev);
+ rp = raw3270_setup_console();
if (IS_ERR(rp))
return PTR_ERR(rp);
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index 96e52bf7593..71e97473801 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -524,20 +524,20 @@ static const struct file_operations fs3270_fops = {
.llseek = no_llseek,
};
-void fs3270_create_cb(int minor)
+static void fs3270_create_cb(int minor)
{
__register_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub", &fs3270_fops);
device_create(class3270, NULL, MKDEV(IBM_FS3270_MAJOR, minor),
NULL, "3270/tub%d", minor);
}
-void fs3270_destroy_cb(int minor)
+static void fs3270_destroy_cb(int minor)
{
device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, minor));
__unregister_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub");
}
-struct raw3270_notifier fs3270_notifier =
+static struct raw3270_notifier fs3270_notifier =
{
.create = fs3270_create_cb,
.destroy = fs3270_destroy_cb,
@@ -564,6 +564,7 @@ static void __exit
fs3270_exit(void)
{
raw3270_unregister_notifier(&fs3270_notifier);
+ device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, 0));
__unregister_chrdev(IBM_FS3270_MAJOR, 0, 1, "fs3270");
}
diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c
index 4600aa10a1c..668b32b0dc1 100644
--- a/drivers/s390/char/monwriter.c
+++ b/drivers/s390/char/monwriter.c
@@ -60,7 +60,7 @@ static int monwrite_diag(struct monwrite_hdr *myhdr, char *buffer, int fcn)
struct appldata_product_id id;
int rc;
- strcpy(id.prod_nr, "LNXAPPL");
+ strncpy(id.prod_nr, "LNXAPPL", 7);
id.prod_fn = myhdr->applid;
id.record_nr = myhdr->record_num;
id.version_nr = myhdr->version;
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index 24a08e8f19e..220acb4cbee 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -276,6 +276,15 @@ __raw3270_start(struct raw3270 *rp, struct raw3270_view *view,
}
int
+raw3270_view_active(struct raw3270_view *view)
+{
+ struct raw3270 *rp = view->dev;
+
+ return rp && rp->view == view &&
+ !test_bit(RAW3270_FLAGS_FROZEN, &rp->flags);
+}
+
+int
raw3270_start(struct raw3270_view *view, struct raw3270_request *rq)
{
unsigned long flags;
@@ -615,14 +624,15 @@ raw3270_reset_device_cb(struct raw3270_request *rq, void *data)
if (rp->state != RAW3270_STATE_RESET)
return;
- if (rq && rq->rc) {
+ if (rq->rc) {
/* Reset command failed. */
rp->state = RAW3270_STATE_INIT;
- } else if (0 && MACHINE_IS_VM) {
+ } else if (MACHINE_IS_VM) {
raw3270_size_device_vm(rp);
raw3270_size_device_done(rp);
} else
raw3270_writesf_readpart(rp);
+ memset(&rp->init_reset, 0, sizeof(rp->init_reset));
}
static int
@@ -630,9 +640,10 @@ __raw3270_reset_device(struct raw3270 *rp)
{
int rc;
+ /* Check if reset is already pending */
+ if (rp->init_reset.view)
+ return -EBUSY;
/* Store reset data stream to init_data/init_reset */
- memset(&rp->init_reset, 0, sizeof(rp->init_reset));
- memset(&rp->init_data, 0, sizeof(rp->init_data));
rp->init_data[0] = TW_KR;
rp->init_reset.ccw.cmd_code = TC_EWRITEA;
rp->init_reset.ccw.flags = CCW_FLAG_SLI;
@@ -776,22 +787,37 @@ raw3270_setup_device(struct ccw_device *cdev, struct raw3270 *rp, char *ascebc)
}
#ifdef CONFIG_TN3270_CONSOLE
+/* Tentative definition - see below for actual definition. */
+static struct ccw_driver raw3270_ccw_driver;
+
/*
* Setup 3270 device configured as console.
*/
-struct raw3270 __init *raw3270_setup_console(struct ccw_device *cdev)
+struct raw3270 __init *raw3270_setup_console(void)
{
+ struct ccw_device *cdev;
unsigned long flags;
struct raw3270 *rp;
char *ascebc;
int rc;
+ cdev = ccw_device_create_console(&raw3270_ccw_driver);
+ if (IS_ERR(cdev))
+ return ERR_CAST(cdev);
+
rp = kzalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA);
ascebc = kzalloc(256, GFP_KERNEL);
rc = raw3270_setup_device(cdev, rp, ascebc);
if (rc)
return ERR_PTR(rc);
set_bit(RAW3270_FLAGS_CONSOLE, &rp->flags);
+
+ rc = ccw_device_enable_console(cdev);
+ if (rc) {
+ ccw_device_destroy_console(cdev);
+ return ERR_PTR(rc);
+ }
+
spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags);
do {
__raw3270_reset_device(rp);
@@ -826,7 +852,7 @@ raw3270_create_device(struct ccw_device *cdev)
char *ascebc;
int rc;
- rp = kmalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA);
+ rp = kzalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA);
if (!rp)
return ERR_PTR(-ENOMEM);
ascebc = kmalloc(256, GFP_KERNEL);
diff --git a/drivers/s390/char/raw3270.h b/drivers/s390/char/raw3270.h
index 7b73ff8c1bd..e1e41c2861f 100644
--- a/drivers/s390/char/raw3270.h
+++ b/drivers/s390/char/raw3270.h
@@ -173,6 +173,7 @@ int raw3270_start_locked(struct raw3270_view *, struct raw3270_request *);
int raw3270_start_irq(struct raw3270_view *, struct raw3270_request *);
int raw3270_reset(struct raw3270_view *);
struct raw3270_view *raw3270_view(struct raw3270_view *);
+int raw3270_view_active(struct raw3270_view *);
/* Reference count inliner for view structures. */
static inline void
@@ -190,7 +191,7 @@ raw3270_put_view(struct raw3270_view *view)
wake_up(&raw3270_wait_queue);
}
-struct raw3270 *raw3270_setup_console(struct ccw_device *cdev);
+struct raw3270 *raw3270_setup_console(void);
void raw3270_wait_cons_dev(struct raw3270 *);
/* Notifier for device addition/removal */
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index bd6871bf545..c316051d9bd 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -50,16 +50,50 @@ static char sclp_init_sccb[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE)));
/* Suspend request */
static DECLARE_COMPLETION(sclp_request_queue_flushed);
+/* Number of console pages to allocate, used by sclp_con.c and sclp_vt220.c */
+int sclp_console_pages = SCLP_CONSOLE_PAGES;
+/* Flag to indicate if buffer pages are dropped on buffer full condition */
+int sclp_console_drop = 0;
+/* Number of times the console dropped buffer pages */
+unsigned long sclp_console_full;
+
static void sclp_suspend_req_cb(struct sclp_req *req, void *data)
{
complete(&sclp_request_queue_flushed);
}
+static int __init sclp_setup_console_pages(char *str)
+{
+ int pages, rc;
+
+ rc = kstrtoint(str, 0, &pages);
+ if (!rc && pages >= SCLP_CONSOLE_PAGES)
+ sclp_console_pages = pages;
+ return 1;
+}
+
+__setup("sclp_con_pages=", sclp_setup_console_pages);
+
+static int __init sclp_setup_console_drop(char *str)
+{
+ int drop, rc;
+
+ rc = kstrtoint(str, 0, &drop);
+ if (!rc && drop)
+ sclp_console_drop = 1;
+ return 1;
+}
+
+__setup("sclp_con_drop=", sclp_setup_console_drop);
+
static struct sclp_req sclp_suspend_req;
/* Timer for request retries. */
static struct timer_list sclp_request_timer;
+/* Timer for queued requests. */
+static struct timer_list sclp_queue_timer;
+
/* Internal state: is the driver initialized? */
static volatile enum sclp_init_state_t {
sclp_init_state_uninitialized,
@@ -117,14 +151,19 @@ static int sclp_init(void);
int
sclp_service_call(sclp_cmdw_t command, void *sccb)
{
- int cc;
+ int cc = 4; /* Initialize for program check handling */
asm volatile(
- " .insn rre,0xb2200000,%1,%2\n" /* servc %1,%2 */
- " ipm %0\n"
- " srl %0,28"
- : "=&d" (cc) : "d" (command), "a" (__pa(sccb))
+ "0: .insn rre,0xb2200000,%1,%2\n" /* servc %1,%2 */
+ "1: ipm %0\n"
+ " srl %0,28\n"
+ "2:\n"
+ EX_TABLE(0b, 2b)
+ EX_TABLE(1b, 2b)
+ : "+&d" (cc) : "d" (command), "a" (__pa(sccb))
: "cc", "memory");
+ if (cc == 4)
+ return -EINVAL;
if (cc == 3)
return -EIO;
if (cc == 2)
@@ -179,6 +218,76 @@ sclp_request_timeout(unsigned long data)
sclp_process_queue();
}
+/*
+ * Returns the expire value in jiffies of the next pending request timeout,
+ * if any. Needs to be called with sclp_lock.
+ */
+static unsigned long __sclp_req_queue_find_next_timeout(void)
+{
+ unsigned long expires_next = 0;
+ struct sclp_req *req;
+
+ list_for_each_entry(req, &sclp_req_queue, list) {
+ if (!req->queue_expires)
+ continue;
+ if (!expires_next ||
+ (time_before(req->queue_expires, expires_next)))
+ expires_next = req->queue_expires;
+ }
+ return expires_next;
+}
+
+/*
+ * Returns expired request, if any, and removes it from the list.
+ */
+static struct sclp_req *__sclp_req_queue_remove_expired_req(void)
+{
+ unsigned long flags, now;
+ struct sclp_req *req;
+
+ spin_lock_irqsave(&sclp_lock, flags);
+ now = jiffies;
+ /* Don't need list_for_each_safe because we break out after list_del */
+ list_for_each_entry(req, &sclp_req_queue, list) {
+ if (!req->queue_expires)
+ continue;
+ if (time_before_eq(req->queue_expires, now)) {
+ if (req->status == SCLP_REQ_QUEUED) {
+ req->status = SCLP_REQ_QUEUED_TIMEOUT;
+ list_del(&req->list);
+ goto out;
+ }
+ }
+ }
+ req = NULL;
+out:
+ spin_unlock_irqrestore(&sclp_lock, flags);
+ return req;
+}
+
+/*
+ * Timeout handler for queued requests. Removes request from list and
+ * invokes callback. This timer can be set per request in situations where
+ * waiting too long would be harmful to the system, e.g. during SE reboot.
+ */
+static void sclp_req_queue_timeout(unsigned long data)
+{
+ unsigned long flags, expires_next;
+ struct sclp_req *req;
+
+ do {
+ req = __sclp_req_queue_remove_expired_req();
+ if (req && req->callback)
+ req->callback(req, req->callback_data);
+ } while (req);
+
+ spin_lock_irqsave(&sclp_lock, flags);
+ expires_next = __sclp_req_queue_find_next_timeout();
+ if (expires_next)
+ mod_timer(&sclp_queue_timer, expires_next);
+ spin_unlock_irqrestore(&sclp_lock, flags);
+}
+
/* Try to start a request. Return zero if the request was successfully
* started or if it will be started at a later time. Return non-zero otherwise.
* Called while sclp_lock is locked. */
@@ -281,6 +390,13 @@ sclp_add_request(struct sclp_req *req)
req->start_count = 0;
list_add_tail(&req->list, &sclp_req_queue);
rc = 0;
+ if (req->queue_timeout) {
+ req->queue_expires = jiffies + req->queue_timeout * HZ;
+ if (!timer_pending(&sclp_queue_timer) ||
+ time_after(sclp_queue_timer.expires, req->queue_expires))
+ mod_timer(&sclp_queue_timer, req->queue_expires);
+ } else
+ req->queue_expires = 0;
/* Start if request is first in list */
if (sclp_running_state == sclp_running_state_idle &&
req->list.prev == &sclp_req_queue) {
@@ -450,7 +566,7 @@ sclp_sync_wait(void)
timeout = 0;
if (timer_pending(&sclp_request_timer)) {
/* Get timeout TOD value */
- timeout = get_tod_clock() +
+ timeout = get_tod_clock_fast() +
sclp_tod_from_jiffies(sclp_request_timer.expires -
jiffies);
}
@@ -472,7 +588,7 @@ sclp_sync_wait(void)
while (sclp_running_state != sclp_running_state_idle) {
/* Check for expired request timer */
if (timer_pending(&sclp_request_timer) &&
- get_tod_clock() > timeout &&
+ get_tod_clock_fast() > timeout &&
del_timer(&sclp_request_timer))
sclp_request_timer.function(sclp_request_timer.data);
cpu_relax();
@@ -856,7 +972,7 @@ sclp_check_interface(void)
spin_lock_irqsave(&sclp_lock, flags);
/* Prepare init mask command */
- rc = register_external_interrupt(0x2401, sclp_check_handler);
+ rc = register_external_irq(EXT_IRQ_SERVICE_SIG, sclp_check_handler);
if (rc) {
spin_unlock_irqrestore(&sclp_lock, flags);
return rc;
@@ -874,12 +990,12 @@ sclp_check_interface(void)
spin_unlock_irqrestore(&sclp_lock, flags);
/* Enable service-signal interruption - needs to happen
* with IRQs enabled. */
- service_subclass_irq_register();
+ irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL);
/* Wait for signal from interrupt or timeout */
sclp_sync_wait();
/* Disable service-signal interruption - needs to happen
* with IRQs enabled. */
- service_subclass_irq_unregister();
+ irq_subclass_unregister(IRQ_SUBCLASS_SERVICE_SIGNAL);
spin_lock_irqsave(&sclp_lock, flags);
del_timer(&sclp_request_timer);
if (sclp_init_req.status == SCLP_REQ_DONE &&
@@ -889,7 +1005,7 @@ sclp_check_interface(void)
} else
rc = -EBUSY;
}
- unregister_external_interrupt(0x2401, sclp_check_handler);
+ unregister_external_irq(EXT_IRQ_SERVICE_SIG, sclp_check_handler);
spin_unlock_irqrestore(&sclp_lock, flags);
return rc;
}
@@ -1013,11 +1129,47 @@ static const struct dev_pm_ops sclp_pm_ops = {
.restore = sclp_restore,
};
+static ssize_t sclp_show_console_pages(struct device_driver *dev, char *buf)
+{
+ return sprintf(buf, "%i\n", sclp_console_pages);
+}
+
+static DRIVER_ATTR(con_pages, S_IRUSR, sclp_show_console_pages, NULL);
+
+static ssize_t sclp_show_con_drop(struct device_driver *dev, char *buf)
+{
+ return sprintf(buf, "%i\n", sclp_console_drop);
+}
+
+static DRIVER_ATTR(con_drop, S_IRUSR, sclp_show_con_drop, NULL);
+
+static ssize_t sclp_show_console_full(struct device_driver *dev, char *buf)
+{
+ return sprintf(buf, "%lu\n", sclp_console_full);
+}
+
+static DRIVER_ATTR(con_full, S_IRUSR, sclp_show_console_full, NULL);
+
+static struct attribute *sclp_drv_attrs[] = {
+ &driver_attr_con_pages.attr,
+ &driver_attr_con_drop.attr,
+ &driver_attr_con_full.attr,
+ NULL,
+};
+static struct attribute_group sclp_drv_attr_group = {
+ .attrs = sclp_drv_attrs,
+};
+static const struct attribute_group *sclp_drv_attr_groups[] = {
+ &sclp_drv_attr_group,
+ NULL,
+};
+
static struct platform_driver sclp_pdrv = {
.driver = {
.name = "sclp",
.owner = THIS_MODULE,
.pm = &sclp_pm_ops,
+ .groups = sclp_drv_attr_groups,
},
};
@@ -1041,6 +1193,8 @@ sclp_init(void)
INIT_LIST_HEAD(&sclp_reg_list);
list_add(&sclp_state_change_event.list, &sclp_reg_list);
init_timer(&sclp_request_timer);
+ init_timer(&sclp_queue_timer);
+ sclp_queue_timer.function = sclp_req_queue_timeout;
/* Check interface */
spin_unlock_irqrestore(&sclp_lock, flags);
rc = sclp_check_interface();
@@ -1052,14 +1206,14 @@ sclp_init(void)
if (rc)
goto fail_init_state_uninitialized;
/* Register interrupt handler */
- rc = register_external_interrupt(0x2401, sclp_interrupt_handler);
+ rc = register_external_irq(EXT_IRQ_SERVICE_SIG, sclp_interrupt_handler);
if (rc)
goto fail_unregister_reboot_notifier;
sclp_init_state = sclp_init_state_initialized;
spin_unlock_irqrestore(&sclp_lock, flags);
/* Enable service-signal external interruption - needs to happen with
* IRQs enabled. */
- service_subclass_irq_register();
+ irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL);
sclp_init_mask(1);
return 0;
@@ -1096,10 +1250,12 @@ static __init int sclp_initcall(void)
rc = platform_driver_register(&sclp_pdrv);
if (rc)
return rc;
+
sclp_pdev = platform_device_register_simple("sclp", -1, NULL, 0);
- rc = IS_ERR(sclp_pdev) ? PTR_ERR(sclp_pdev) : 0;
+ rc = PTR_ERR_OR_ZERO(sclp_pdev);
if (rc)
goto fail_platform_driver_unregister;
+
rc = atomic_notifier_chain_register(&panic_notifier_list,
&sclp_on_panic_nb);
if (rc)
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h
index 25bcd4c0ed8..a68b5ec7d04 100644
--- a/drivers/s390/char/sclp.h
+++ b/drivers/s390/char/sclp.h
@@ -15,7 +15,7 @@
/* maximum number of pages concerning our own memory management */
#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
-#define MAX_CONSOLE_PAGES 6
+#define SCLP_CONSOLE_PAGES 6
#define EVTYP_OPCMD 0x01
#define EVTYP_MSG 0x02
@@ -99,6 +99,7 @@ struct init_sccb {
} __attribute__((packed));
extern u64 sclp_facilities;
+
#define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL)
#define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL)
#define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL)
@@ -132,6 +133,11 @@ struct sclp_req {
/* Callback that is called after reaching final status. */
void (*callback)(struct sclp_req *, void *data);
void *callback_data;
+ int queue_timeout; /* request queue timeout (sec), set by
+ caller of sclp_add_request(), if
+ needed */
+ /* Internal fields */
+ unsigned long queue_expires; /* request queue timeout (jiffies) */
};
#define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */
@@ -139,6 +145,9 @@ struct sclp_req {
#define SCLP_REQ_RUNNING 0x02 /* request is currently running */
#define SCLP_REQ_DONE 0x03 /* request is completed successfully */
#define SCLP_REQ_FAILED 0x05 /* request is finally failed */
+#define SCLP_REQ_QUEUED_TIMEOUT 0x06 /* request on queue timed out */
+
+#define SCLP_QUEUE_INTERVAL 5 /* timeout interval for request queue */
/* function pointers that a high level driver has to use for registration */
/* of some routines it wants to be called from the low level driver */
@@ -171,10 +180,19 @@ int sclp_remove_processed(struct sccb_header *sccb);
int sclp_deactivate(void);
int sclp_reactivate(void);
int sclp_service_call(sclp_cmdw_t command, void *sccb);
+int sclp_sync_request(sclp_cmdw_t command, void *sccb);
+int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout);
int sclp_sdias_init(void);
void sclp_sdias_exit(void);
+extern int sclp_console_pages;
+extern int sclp_console_drop;
+extern unsigned long sclp_console_full;
+extern u8 sclp_fac84;
+extern unsigned long long sclp_rzm;
+extern unsigned long long sclp_rnmax;
+
/* useful inlines */
/* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index bf07c3a188d..6e14999f9e8 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -28,166 +28,6 @@
#include "sclp.h"
-#define SCLP_CMDW_READ_SCP_INFO 0x00020001
-#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
-
-struct read_info_sccb {
- struct sccb_header header; /* 0-7 */
- u16 rnmax; /* 8-9 */
- u8 rnsize; /* 10 */
- u8 _reserved0[24 - 11]; /* 11-15 */
- u8 loadparm[8]; /* 24-31 */
- u8 _reserved1[48 - 32]; /* 32-47 */
- u64 facilities; /* 48-55 */
- u8 _reserved2[84 - 56]; /* 56-83 */
- u8 fac84; /* 84 */
- u8 fac85; /* 85 */
- u8 _reserved3[91 - 86]; /* 86-90 */
- u8 flags; /* 91 */
- u8 _reserved4[100 - 92]; /* 92-99 */
- u32 rnsize2; /* 100-103 */
- u64 rnmax2; /* 104-111 */
- u8 _reserved5[4096 - 112]; /* 112-4095 */
-} __attribute__((packed, aligned(PAGE_SIZE)));
-
-static struct init_sccb __initdata early_event_mask_sccb __aligned(PAGE_SIZE);
-static struct read_info_sccb __initdata early_read_info_sccb;
-static int __initdata early_read_info_sccb_valid;
-
-u64 sclp_facilities;
-static u8 sclp_fac84;
-static unsigned long long rzm;
-static unsigned long long rnmax;
-
-static int __init sclp_cmd_sync_early(sclp_cmdw_t cmd, void *sccb)
-{
- int rc;
-
- __ctl_set_bit(0, 9);
- rc = sclp_service_call(cmd, sccb);
- if (rc)
- goto out;
- __load_psw_mask(PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA |
- PSW_MASK_BA | PSW_MASK_EXT | PSW_MASK_WAIT);
- local_irq_disable();
-out:
- /* Contents of the sccb might have changed. */
- barrier();
- __ctl_clear_bit(0, 9);
- return rc;
-}
-
-static void __init sclp_read_info_early(void)
-{
- int rc;
- int i;
- struct read_info_sccb *sccb;
- sclp_cmdw_t commands[] = {SCLP_CMDW_READ_SCP_INFO_FORCED,
- SCLP_CMDW_READ_SCP_INFO};
-
- sccb = &early_read_info_sccb;
- for (i = 0; i < ARRAY_SIZE(commands); i++) {
- do {
- memset(sccb, 0, sizeof(*sccb));
- sccb->header.length = sizeof(*sccb);
- sccb->header.function_code = 0x80;
- sccb->header.control_mask[2] = 0x80;
- rc = sclp_cmd_sync_early(commands[i], sccb);
- } while (rc == -EBUSY);
-
- if (rc)
- break;
- if (sccb->header.response_code == 0x10) {
- early_read_info_sccb_valid = 1;
- break;
- }
- if (sccb->header.response_code != 0x1f0)
- break;
- }
-}
-
-static void __init sclp_event_mask_early(void)
-{
- struct init_sccb *sccb = &early_event_mask_sccb;
- int rc;
-
- do {
- memset(sccb, 0, sizeof(*sccb));
- sccb->header.length = sizeof(*sccb);
- sccb->mask_length = sizeof(sccb_mask_t);
- rc = sclp_cmd_sync_early(SCLP_CMDW_WRITE_EVENT_MASK, sccb);
- } while (rc == -EBUSY);
-}
-
-void __init sclp_facilities_detect(void)
-{
- struct read_info_sccb *sccb;
-
- sclp_read_info_early();
- if (!early_read_info_sccb_valid)
- return;
-
- sccb = &early_read_info_sccb;
- sclp_facilities = sccb->facilities;
- sclp_fac84 = sccb->fac84;
- if (sccb->fac85 & 0x02)
- S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;
- rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2;
- rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2;
- rzm <<= 20;
-
- sclp_event_mask_early();
-}
-
-bool __init sclp_has_linemode(void)
-{
- struct init_sccb *sccb = &early_event_mask_sccb;
-
- if (sccb->header.response_code != 0x20)
- return 0;
- if (sccb->sclp_send_mask & (EVTYP_MSG_MASK | EVTYP_PMSGCMD_MASK))
- return 1;
- return 0;
-}
-
-bool __init sclp_has_vt220(void)
-{
- struct init_sccb *sccb = &early_event_mask_sccb;
-
- if (sccb->header.response_code != 0x20)
- return 0;
- if (sccb->sclp_send_mask & EVTYP_VT220MSG_MASK)
- return 1;
- return 0;
-}
-
-unsigned long long sclp_get_rnmax(void)
-{
- return rnmax;
-}
-
-unsigned long long sclp_get_rzm(void)
-{
- return rzm;
-}
-
-/*
- * This function will be called after sclp_facilities_detect(), which gets
- * called from early.c code. Therefore the sccb should have valid contents.
- */
-void __init sclp_get_ipl_info(struct sclp_ipl_info *info)
-{
- struct read_info_sccb *sccb;
-
- if (!early_read_info_sccb_valid)
- return;
- sccb = &early_read_info_sccb;
- info->is_valid = 1;
- if (sccb->flags & 0x2)
- info->has_dump = 1;
- memcpy(&info->loadparm, &sccb->loadparm, LOADPARM_LEN);
-}
-
static void sclp_sync_callback(struct sclp_req *req, void *data)
{
struct completion *completion = data;
@@ -195,7 +35,12 @@ static void sclp_sync_callback(struct sclp_req *req, void *data)
complete(completion);
}
-static int do_sync_request(sclp_cmdw_t cmd, void *sccb)
+int sclp_sync_request(sclp_cmdw_t cmd, void *sccb)
+{
+ return sclp_sync_request_timeout(cmd, sccb, 0);
+}
+
+int sclp_sync_request_timeout(sclp_cmdw_t cmd, void *sccb, int timeout)
{
struct completion completion;
struct sclp_req *request;
@@ -204,6 +49,8 @@ static int do_sync_request(sclp_cmdw_t cmd, void *sccb)
request = kzalloc(sizeof(*request), GFP_KERNEL);
if (!request)
return -ENOMEM;
+ if (timeout)
+ request->queue_timeout = timeout;
request->command = cmd;
request->sccb = sccb;
request->status = SCLP_REQ_FILLED;
@@ -270,7 +117,8 @@ int sclp_get_cpu_info(struct sclp_cpu_info *info)
if (!sccb)
return -ENOMEM;
sccb->header.length = sizeof(*sccb);
- rc = do_sync_request(SCLP_CMDW_READ_CPU_INFO, sccb);
+ rc = sclp_sync_request_timeout(SCLP_CMDW_READ_CPU_INFO, sccb,
+ SCLP_QUEUE_INTERVAL);
if (rc)
goto out;
if (sccb->header.response_code != 0x0010) {
@@ -304,7 +152,7 @@ static int do_cpu_configure(sclp_cmdw_t cmd)
if (!sccb)
return -ENOMEM;
sccb->header.length = sizeof(*sccb);
- rc = do_sync_request(cmd, sccb);
+ rc = sclp_sync_request_timeout(cmd, sccb, SCLP_QUEUE_INTERVAL);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -354,14 +202,14 @@ struct assign_storage_sccb {
int arch_get_memory_phys_device(unsigned long start_pfn)
{
- if (!rzm)
+ if (!sclp_rzm)
return 0;
- return PFN_PHYS(start_pfn) >> ilog2(rzm);
+ return PFN_PHYS(start_pfn) >> ilog2(sclp_rzm);
}
static unsigned long long rn2addr(u16 rn)
{
- return (unsigned long long) (rn - 1) * rzm;
+ return (unsigned long long) (rn - 1) * sclp_rzm;
}
static int do_assign_storage(sclp_cmdw_t cmd, u16 rn)
@@ -374,7 +222,7 @@ static int do_assign_storage(sclp_cmdw_t cmd, u16 rn)
return -ENOMEM;
sccb->header.length = PAGE_SIZE;
sccb->rn = rn;
- rc = do_sync_request(cmd, sccb);
+ rc = sclp_sync_request_timeout(cmd, sccb, SCLP_QUEUE_INTERVAL);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -402,7 +250,7 @@ static int sclp_assign_storage(u16 rn)
if (rc)
return rc;
start = rn2addr(rn);
- storage_key_init_range(start, start + rzm);
+ storage_key_init_range(start, start + sclp_rzm);
return 0;
}
@@ -429,7 +277,8 @@ static int sclp_attach_storage(u8 id)
if (!sccb)
return -ENOMEM;
sccb->header.length = PAGE_SIZE;
- rc = do_sync_request(0x00080001 | id << 8, sccb);
+ rc = sclp_sync_request_timeout(0x00080001 | id << 8, sccb,
+ SCLP_QUEUE_INTERVAL);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -460,7 +309,7 @@ static int sclp_mem_change_state(unsigned long start, unsigned long size,
istart = rn2addr(incr->rn);
if (start + size - 1 < istart)
break;
- if (start > istart + rzm - 1)
+ if (start > istart + sclp_rzm - 1)
continue;
if (online)
rc |= sclp_assign_storage(incr->rn);
@@ -524,7 +373,7 @@ static void __init add_memory_merged(u16 rn)
if (!first_rn)
goto skip_add;
start = rn2addr(first_rn);
- size = (unsigned long long ) num * rzm;
+ size = (unsigned long long) num * sclp_rzm;
if (start >= VMEM_MAX_PHYS)
goto skip_add;
if (start + size > VMEM_MAX_PHYS)
@@ -572,7 +421,7 @@ static void __init insert_increment(u16 rn, int standby, int assigned)
}
if (!assigned)
new_incr->rn = last_rn + 1;
- if (new_incr->rn > rnmax) {
+ if (new_incr->rn > sclp_rnmax) {
kfree(new_incr);
return;
}
@@ -615,8 +464,6 @@ static int __init sclp_detect_standby_memory(void)
if (OLDMEM_BASE) /* No standby memory in kdump mode */
return 0;
- if (!early_read_info_sccb_valid)
- return 0;
if ((sclp_facilities & 0xe00000000000ULL) != 0xe00000000000ULL)
return 0;
rc = -ENOMEM;
@@ -627,7 +474,7 @@ static int __init sclp_detect_standby_memory(void)
for (id = 0; id <= sclp_max_storage_id; id++) {
memset(sccb, 0, PAGE_SIZE);
sccb->header.length = PAGE_SIZE;
- rc = do_sync_request(0x00040001 | id << 8, sccb);
+ rc = sclp_sync_request(0x00040001 | id << 8, sccb);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -659,7 +506,7 @@ static int __init sclp_detect_standby_memory(void)
}
if (rc || list_empty(&sclp_mem_list))
goto out;
- for (i = 1; i <= rnmax - assigned; i++)
+ for (i = 1; i <= sclp_rnmax - assigned; i++)
insert_increment(0, 1, 0);
rc = register_memory_notifier(&sclp_mem_nb);
if (rc)
@@ -668,7 +515,7 @@ static int __init sclp_detect_standby_memory(void)
if (rc)
goto out;
sclp_pdev = platform_device_register_simple("sclp_mem", -1, NULL, 0);
- rc = IS_ERR(sclp_pdev) ? PTR_ERR(sclp_pdev) : 0;
+ rc = PTR_ERR_OR_ZERO(sclp_pdev);
if (rc)
goto out_driver;
sclp_add_standby_memory();
@@ -714,7 +561,7 @@ static int do_pci_configure(sclp_cmdw_t cmd, u32 fid)
sccb->header.length = PAGE_SIZE;
sccb->atype = SCLP_RECONFIG_PCI_ATPYE;
sccb->aid = fid;
- rc = do_sync_request(cmd, sccb);
+ rc = sclp_sync_request(cmd, sccb);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -771,7 +618,7 @@ static int do_chp_configure(sclp_cmdw_t cmd)
if (!sccb)
return -ENOMEM;
sccb->header.length = sizeof(*sccb);
- rc = do_sync_request(cmd, sccb);
+ rc = sclp_sync_request(cmd, sccb);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -846,7 +693,7 @@ int sclp_chp_read_info(struct sclp_chp_info *info)
if (!sccb)
return -ENOMEM;
sccb->header.length = sizeof(*sccb);
- rc = do_sync_request(SCLP_CMDW_READ_CHPATH_INFORMATION, sccb);
+ rc = sclp_sync_request(SCLP_CMDW_READ_CHPATH_INFORMATION, sccb);
if (rc)
goto out;
if (sccb->header.response_code != 0x0010) {
@@ -862,3 +709,8 @@ out:
free_page((unsigned long) sccb);
return rc;
}
+
+bool sclp_has_sprp(void)
+{
+ return !!(sclp_fac84 & 0x2);
+}
diff --git a/drivers/s390/char/sclp_con.c b/drivers/s390/char/sclp_con.c
index ecf45c54f8c..5880def98fc 100644
--- a/drivers/s390/char/sclp_con.c
+++ b/drivers/s390/char/sclp_con.c
@@ -130,6 +130,31 @@ sclp_console_timeout(unsigned long data)
}
/*
+ * Drop oldest console buffer if sclp_con_drop is set
+ */
+static int
+sclp_console_drop_buffer(void)
+{
+ struct list_head *list;
+ struct sclp_buffer *buffer;
+ void *page;
+
+ if (!sclp_console_drop)
+ return 0;
+ list = sclp_con_outqueue.next;
+ if (sclp_con_queue_running)
+ /* The first element is in I/O */
+ list = list->next;
+ if (list == &sclp_con_outqueue)
+ return 0;
+ list_del(list);
+ buffer = list_entry(list, struct sclp_buffer, list);
+ page = sclp_unmake_buffer(buffer);
+ list_add_tail((struct list_head *) page, &sclp_con_pages);
+ return 1;
+}
+
+/*
* Writes the given message to S390 system console
*/
static void
@@ -150,9 +175,13 @@ sclp_console_write(struct console *console, const char *message,
do {
/* make sure we have a console output buffer */
if (sclp_conbuf == NULL) {
+ if (list_empty(&sclp_con_pages))
+ sclp_console_full++;
while (list_empty(&sclp_con_pages)) {
if (sclp_con_suspended)
goto out;
+ if (sclp_console_drop_buffer())
+ break;
spin_unlock_irqrestore(&sclp_con_lock, flags);
sclp_sync_wait();
spin_lock_irqsave(&sclp_con_lock, flags);
@@ -297,7 +326,7 @@ sclp_console_init(void)
return rc;
/* Allocate pages for output buffering */
INIT_LIST_HEAD(&sclp_con_pages);
- for (i = 0; i < MAX_CONSOLE_PAGES; i++) {
+ for (i = 0; i < sclp_console_pages; i++) {
page = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
list_add_tail(page, &sclp_con_pages);
}
diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c
index 444d36183a2..94415620747 100644
--- a/drivers/s390/char/sclp_config.c
+++ b/drivers/s390/char/sclp_config.c
@@ -32,7 +32,7 @@ static void sclp_cpu_capability_notify(struct work_struct *work)
struct device *dev;
s390_adjust_jiffies();
- pr_warning("cpu capability changed.\n");
+ pr_info("CPU capability may have changed\n");
get_online_cpus();
for_each_online_cpu(cpu) {
dev = get_cpu_device(cpu);
diff --git a/drivers/s390/char/sclp_ctl.c b/drivers/s390/char/sclp_ctl.c
new file mode 100644
index 00000000000..648cb86afd4
--- /dev/null
+++ b/drivers/s390/char/sclp_ctl.c
@@ -0,0 +1,144 @@
+/*
+ * IOCTL interface for SCLP
+ *
+ * Copyright IBM Corp. 2012
+ *
+ * Author: Michael Holzheu <holzheu@linux.vnet.ibm.com>
+ */
+
+#include <linux/compat.h>
+#include <linux/uaccess.h>
+#include <linux/miscdevice.h>
+#include <linux/gfp.h>
+#include <linux/module.h>
+#include <linux/ioctl.h>
+#include <linux/fs.h>
+#include <asm/compat.h>
+#include <asm/sclp_ctl.h>
+#include <asm/sclp.h>
+
+#include "sclp.h"
+
+/*
+ * Supported command words
+ */
+static unsigned int sclp_ctl_sccb_wlist[] = {
+ 0x00400002,
+ 0x00410002,
+};
+
+/*
+ * Check if command word is supported
+ */
+static int sclp_ctl_cmdw_supported(unsigned int cmdw)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(sclp_ctl_sccb_wlist); i++) {
+ if (cmdw == sclp_ctl_sccb_wlist[i])
+ return 1;
+ }
+ return 0;
+}
+
+static void __user *u64_to_uptr(u64 value)
+{
+ if (is_compat_task())
+ return compat_ptr(value);
+ else
+ return (void __user *)(unsigned long)value;
+}
+
+/*
+ * Start SCLP request
+ */
+static int sclp_ctl_ioctl_sccb(void __user *user_area)
+{
+ struct sclp_ctl_sccb ctl_sccb;
+ struct sccb_header *sccb;
+ int rc;
+
+ if (copy_from_user(&ctl_sccb, user_area, sizeof(ctl_sccb)))
+ return -EFAULT;
+ if (!sclp_ctl_cmdw_supported(ctl_sccb.cmdw))
+ return -EOPNOTSUPP;
+ sccb = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!sccb)
+ return -ENOMEM;
+ if (copy_from_user(sccb, u64_to_uptr(ctl_sccb.sccb), sizeof(*sccb))) {
+ rc = -EFAULT;
+ goto out_free;
+ }
+ if (sccb->length > PAGE_SIZE || sccb->length < 8)
+ return -EINVAL;
+ if (copy_from_user(sccb, u64_to_uptr(ctl_sccb.sccb), sccb->length)) {
+ rc = -EFAULT;
+ goto out_free;
+ }
+ rc = sclp_sync_request(ctl_sccb.cmdw, sccb);
+ if (rc)
+ goto out_free;
+ if (copy_to_user(u64_to_uptr(ctl_sccb.sccb), sccb, sccb->length))
+ rc = -EFAULT;
+out_free:
+ free_page((unsigned long) sccb);
+ return rc;
+}
+
+/*
+ * SCLP SCCB ioctl function
+ */
+static long sclp_ctl_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ void __user *argp;
+
+ if (is_compat_task())
+ argp = compat_ptr(arg);
+ else
+ argp = (void __user *) arg;
+ switch (cmd) {
+ case SCLP_CTL_SCCB:
+ return sclp_ctl_ioctl_sccb(argp);
+ default: /* unknown ioctl number */
+ return -ENOTTY;
+ }
+}
+
+/*
+ * File operations
+ */
+static const struct file_operations sclp_ctl_fops = {
+ .owner = THIS_MODULE,
+ .open = nonseekable_open,
+ .unlocked_ioctl = sclp_ctl_ioctl,
+ .compat_ioctl = sclp_ctl_ioctl,
+ .llseek = no_llseek,
+};
+
+/*
+ * Misc device definition
+ */
+static struct miscdevice sclp_ctl_device = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "sclp",
+ .fops = &sclp_ctl_fops,
+};
+
+/*
+ * Register sclp_ctl misc device
+ */
+static int __init sclp_ctl_init(void)
+{
+ return misc_register(&sclp_ctl_device);
+}
+module_init(sclp_ctl_init);
+
+/*
+ * Deregister sclp_ctl misc device
+ */
+static void __exit sclp_ctl_exit(void)
+{
+ misc_deregister(&sclp_ctl_device);
+}
+module_exit(sclp_ctl_exit);
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
new file mode 100644
index 00000000000..1918d9dff45
--- /dev/null
+++ b/drivers/s390/char/sclp_early.c
@@ -0,0 +1,315 @@
+/*
+ * SCLP early driver
+ *
+ * Copyright IBM Corp. 2013
+ */
+
+#define KMSG_COMPONENT "sclp_early"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <asm/ctl_reg.h>
+#include <asm/sclp.h>
+#include <asm/ipl.h>
+#include "sclp_sdias.h"
+#include "sclp.h"
+
+#define SCLP_CMDW_READ_SCP_INFO 0x00020001
+#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
+
+struct read_info_sccb {
+ struct sccb_header header; /* 0-7 */
+ u16 rnmax; /* 8-9 */
+ u8 rnsize; /* 10 */
+ u8 _reserved0[16 - 11]; /* 11-15 */
+ u16 ncpurl; /* 16-17 */
+ u16 cpuoff; /* 18-19 */
+ u8 _reserved7[24 - 20]; /* 20-23 */
+ u8 loadparm[8]; /* 24-31 */
+ u8 _reserved1[48 - 32]; /* 32-47 */
+ u64 facilities; /* 48-55 */
+ u8 _reserved2a[76 - 56]; /* 56-75 */
+ u32 ibc; /* 76-79 */
+ u8 _reserved2b[84 - 80]; /* 80-83 */
+ u8 fac84; /* 84 */
+ u8 fac85; /* 85 */
+ u8 _reserved3[91 - 86]; /* 86-90 */
+ u8 flags; /* 91 */
+ u8 _reserved4[100 - 92]; /* 92-99 */
+ u32 rnsize2; /* 100-103 */
+ u64 rnmax2; /* 104-111 */
+ u8 _reserved5[120 - 112]; /* 112-119 */
+ u16 hcpua; /* 120-121 */
+ u8 _reserved6[4096 - 122]; /* 122-4095 */
+} __packed __aligned(PAGE_SIZE);
+
+static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initdata;
+static unsigned int sclp_con_has_vt220 __initdata;
+static unsigned int sclp_con_has_linemode __initdata;
+static unsigned long sclp_hsa_size;
+static unsigned int sclp_max_cpu;
+static struct sclp_ipl_info sclp_ipl_info;
+static unsigned char sclp_siif;
+static u32 sclp_ibc;
+
+u64 sclp_facilities;
+u8 sclp_fac84;
+unsigned long long sclp_rzm;
+unsigned long long sclp_rnmax;
+
+static int __init sclp_cmd_sync_early(sclp_cmdw_t cmd, void *sccb)
+{
+ int rc;
+
+ __ctl_set_bit(0, 9);
+ rc = sclp_service_call(cmd, sccb);
+ if (rc)
+ goto out;
+ __load_psw_mask(PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA |
+ PSW_MASK_BA | PSW_MASK_EXT | PSW_MASK_WAIT);
+ local_irq_disable();
+out:
+ /* Contents of the sccb might have changed. */
+ barrier();
+ __ctl_clear_bit(0, 9);
+ return rc;
+}
+
+static int __init sclp_read_info_early(struct read_info_sccb *sccb)
+{
+ int rc, i;
+ sclp_cmdw_t commands[] = {SCLP_CMDW_READ_SCP_INFO_FORCED,
+ SCLP_CMDW_READ_SCP_INFO};
+
+ for (i = 0; i < ARRAY_SIZE(commands); i++) {
+ do {
+ memset(sccb, 0, sizeof(*sccb));
+ sccb->header.length = sizeof(*sccb);
+ sccb->header.function_code = 0x80;
+ sccb->header.control_mask[2] = 0x80;
+ rc = sclp_cmd_sync_early(commands[i], sccb);
+ } while (rc == -EBUSY);
+
+ if (rc)
+ break;
+ if (sccb->header.response_code == 0x10)
+ return 0;
+ if (sccb->header.response_code != 0x1f0)
+ break;
+ }
+ return -EIO;
+}
+
+static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
+{
+ struct sclp_cpu_entry *cpue;
+ u16 boot_cpu_address, cpu;
+
+ if (sclp_read_info_early(sccb))
+ return;
+
+ sclp_facilities = sccb->facilities;
+ sclp_fac84 = sccb->fac84;
+ if (sccb->fac85 & 0x02)
+ S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;
+ sclp_rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2;
+ sclp_rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2;
+ sclp_rzm <<= 20;
+ sclp_ibc = sccb->ibc;
+
+ if (!sccb->hcpua) {
+ if (MACHINE_IS_VM)
+ sclp_max_cpu = 64;
+ else
+ sclp_max_cpu = sccb->ncpurl;
+ } else {
+ sclp_max_cpu = sccb->hcpua + 1;
+ }
+
+ boot_cpu_address = stap();
+ cpue = (void *)sccb + sccb->cpuoff;
+ for (cpu = 0; cpu < sccb->ncpurl; cpue++, cpu++) {
+ if (boot_cpu_address != cpue->address)
+ continue;
+ sclp_siif = cpue->siif;
+ break;
+ }
+
+ /* Save IPL information */
+ sclp_ipl_info.is_valid = 1;
+ if (sccb->flags & 0x2)
+ sclp_ipl_info.has_dump = 1;
+ memcpy(&sclp_ipl_info.loadparm, &sccb->loadparm, LOADPARM_LEN);
+}
+
+bool __init sclp_has_linemode(void)
+{
+ return !!sclp_con_has_linemode;
+}
+
+bool __init sclp_has_vt220(void)
+{
+ return !!sclp_con_has_vt220;
+}
+
+unsigned long long sclp_get_rnmax(void)
+{
+ return sclp_rnmax;
+}
+
+unsigned long long sclp_get_rzm(void)
+{
+ return sclp_rzm;
+}
+
+unsigned int sclp_get_max_cpu(void)
+{
+ return sclp_max_cpu;
+}
+
+int sclp_has_siif(void)
+{
+ return sclp_siif;
+}
+EXPORT_SYMBOL(sclp_has_siif);
+
+unsigned int sclp_get_ibc(void)
+{
+ return sclp_ibc;
+}
+EXPORT_SYMBOL(sclp_get_ibc);
+
+/*
+ * This function will be called after sclp_facilities_detect(), which gets
+ * called from early.c code. The sclp_facilities_detect() function retrieves
+ * and saves the IPL information.
+ */
+void __init sclp_get_ipl_info(struct sclp_ipl_info *info)
+{
+ *info = sclp_ipl_info;
+}
+
+static int __init sclp_cmd_early(sclp_cmdw_t cmd, void *sccb)
+{
+ int rc;
+
+ do {
+ rc = sclp_cmd_sync_early(cmd, sccb);
+ } while (rc == -EBUSY);
+
+ if (rc)
+ return -EIO;
+ if (((struct sccb_header *) sccb)->response_code != 0x0020)
+ return -EIO;
+ return 0;
+}
+
+static void __init sccb_init_eq_size(struct sdias_sccb *sccb)
+{
+ memset(sccb, 0, sizeof(*sccb));
+
+ sccb->hdr.length = sizeof(*sccb);
+ sccb->evbuf.hdr.length = sizeof(struct sdias_evbuf);
+ sccb->evbuf.hdr.type = EVTYP_SDIAS;
+ sccb->evbuf.event_qual = SDIAS_EQ_SIZE;
+ sccb->evbuf.data_id = SDIAS_DI_FCP_DUMP;
+ sccb->evbuf.event_id = 4712;
+ sccb->evbuf.dbs = 1;
+}
+
+static int __init sclp_set_event_mask(struct init_sccb *sccb,
+ unsigned long receive_mask,
+ unsigned long send_mask)
+{
+ memset(sccb, 0, sizeof(*sccb));
+ sccb->header.length = sizeof(*sccb);
+ sccb->mask_length = sizeof(sccb_mask_t);
+ sccb->receive_mask = receive_mask;
+ sccb->send_mask = send_mask;
+ return sclp_cmd_early(SCLP_CMDW_WRITE_EVENT_MASK, sccb);
+}
+
+static long __init sclp_hsa_size_init(struct sdias_sccb *sccb)
+{
+ sccb_init_eq_size(sccb);
+ if (sclp_cmd_early(SCLP_CMDW_WRITE_EVENT_DATA, sccb))
+ return -EIO;
+ if (sccb->evbuf.blk_cnt == 0)
+ return 0;
+ return (sccb->evbuf.blk_cnt - 1) * PAGE_SIZE;
+}
+
+static long __init sclp_hsa_copy_wait(struct sccb_header *sccb)
+{
+ memset(sccb, 0, PAGE_SIZE);
+ sccb->length = PAGE_SIZE;
+ if (sclp_cmd_early(SCLP_CMDW_READ_EVENT_DATA, sccb))
+ return -EIO;
+ if (((struct sdias_sccb *) sccb)->evbuf.blk_cnt == 0)
+ return 0;
+ return (((struct sdias_sccb *) sccb)->evbuf.blk_cnt - 1) * PAGE_SIZE;
+}
+
+unsigned long sclp_get_hsa_size(void)
+{
+ return sclp_hsa_size;
+}
+
+static void __init sclp_hsa_size_detect(void *sccb)
+{
+ long size;
+
+ /* First try synchronous interface (LPAR) */
+ if (sclp_set_event_mask(sccb, 0, 0x40000010))
+ return;
+ size = sclp_hsa_size_init(sccb);
+ if (size < 0)
+ return;
+ if (size != 0)
+ goto out;
+ /* Then try asynchronous interface (z/VM) */
+ if (sclp_set_event_mask(sccb, 0x00000010, 0x40000010))
+ return;
+ size = sclp_hsa_size_init(sccb);
+ if (size < 0)
+ return;
+ size = sclp_hsa_copy_wait(sccb);
+ if (size < 0)
+ return;
+out:
+ sclp_hsa_size = size;
+}
+
+static unsigned int __init sclp_con_check_linemode(struct init_sccb *sccb)
+{
+ if (!(sccb->sclp_send_mask & (EVTYP_OPCMD_MASK | EVTYP_PMSGCMD_MASK)))
+ return 0;
+ if (!(sccb->sclp_receive_mask & (EVTYP_MSG_MASK | EVTYP_PMSGCMD_MASK)))
+ return 0;
+ return 1;
+}
+
+static void __init sclp_console_detect(struct init_sccb *sccb)
+{
+ if (sccb->header.response_code != 0x20)
+ return;
+
+ if (sccb->sclp_send_mask & EVTYP_VT220MSG_MASK)
+ sclp_con_has_vt220 = 1;
+
+ if (sclp_con_check_linemode(sccb))
+ sclp_con_has_linemode = 1;
+}
+
+void __init sclp_early_detect(void)
+{
+ void *sccb = &sccb_early;
+
+ sclp_facilities_detect(sccb);
+ sclp_hsa_size_detect(sccb);
+
+ /* Turn off SCLP event notifications. Also save remote masks in the
+ * sccb. These are sufficient to detect sclp console capabilities.
+ */
+ sclp_set_event_mask(sccb, 0, 0);
+ sclp_console_detect(sccb);
+}
diff --git a/drivers/s390/char/sclp_sdias.c b/drivers/s390/char/sclp_sdias.c
index b1032931a1c..561a0414b35 100644
--- a/drivers/s390/char/sclp_sdias.c
+++ b/drivers/s390/char/sclp_sdias.c
@@ -1,7 +1,7 @@
/*
- * Sclp "store data in absolut storage"
+ * SCLP "store data in absolute storage"
*
- * Copyright IBM Corp. 2003, 2007
+ * Copyright IBM Corp. 2003, 2013
* Author(s): Michael Holzheu
*/
@@ -14,6 +14,7 @@
#include <asm/debug.h>
#include <asm/ipl.h>
+#include "sclp_sdias.h"
#include "sclp.h"
#include "sclp_rw.h"
@@ -22,46 +23,12 @@
#define SDIAS_RETRIES 300
#define SDIAS_SLEEP_TICKS 50
-#define EQ_STORE_DATA 0x0
-#define EQ_SIZE 0x1
-#define DI_FCP_DUMP 0x0
-#define ASA_SIZE_32 0x0
-#define ASA_SIZE_64 0x1
-#define EVSTATE_ALL_STORED 0x0
-#define EVSTATE_NO_DATA 0x3
-#define EVSTATE_PART_STORED 0x10
-
static struct debug_info *sdias_dbf;
static struct sclp_register sclp_sdias_register = {
.send_mask = EVTYP_SDIAS_MASK,
};
-struct sdias_evbuf {
- struct evbuf_header hdr;
- u8 event_qual;
- u8 data_id;
- u64 reserved2;
- u32 event_id;
- u16 reserved3;
- u8 asa_size;
- u8 event_status;
- u32 reserved4;
- u32 blk_cnt;
- u64 asa;
- u32 reserved5;
- u32 fbn;
- u32 reserved6;
- u32 lbn;
- u16 reserved7;
- u16 dbs;
-} __attribute__((packed));
-
-struct sdias_sccb {
- struct sccb_header hdr;
- struct sdias_evbuf evbuf;
-} __attribute__((packed));
-
static struct sdias_sccb sccb __attribute__((aligned(4096)));
static struct sdias_evbuf sdias_evbuf;
@@ -148,8 +115,8 @@ int sclp_sdias_blk_count(void)
sccb.hdr.length = sizeof(sccb);
sccb.evbuf.hdr.length = sizeof(struct sdias_evbuf);
sccb.evbuf.hdr.type = EVTYP_SDIAS;
- sccb.evbuf.event_qual = EQ_SIZE;
- sccb.evbuf.data_id = DI_FCP_DUMP;
+ sccb.evbuf.event_qual = SDIAS_EQ_SIZE;
+ sccb.evbuf.data_id = SDIAS_DI_FCP_DUMP;
sccb.evbuf.event_id = 4712;
sccb.evbuf.dbs = 1;
@@ -208,13 +175,13 @@ int sclp_sdias_copy(void *dest, int start_blk, int nr_blks)
sccb.evbuf.hdr.length = sizeof(struct sdias_evbuf);
sccb.evbuf.hdr.type = EVTYP_SDIAS;
sccb.evbuf.hdr.flags = 0;
- sccb.evbuf.event_qual = EQ_STORE_DATA;
- sccb.evbuf.data_id = DI_FCP_DUMP;
+ sccb.evbuf.event_qual = SDIAS_EQ_STORE_DATA;
+ sccb.evbuf.data_id = SDIAS_DI_FCP_DUMP;
sccb.evbuf.event_id = 4712;
#ifdef CONFIG_64BIT
- sccb.evbuf.asa_size = ASA_SIZE_64;
+ sccb.evbuf.asa_size = SDIAS_ASA_SIZE_64;
#else
- sccb.evbuf.asa_size = ASA_SIZE_32;
+ sccb.evbuf.asa_size = SDIAS_ASA_SIZE_32;
#endif
sccb.evbuf.event_status = 0;
sccb.evbuf.blk_cnt = nr_blks;
@@ -240,20 +207,19 @@ int sclp_sdias_copy(void *dest, int start_blk, int nr_blks)
}
switch (sdias_evbuf.event_status) {
- case EVSTATE_ALL_STORED:
- TRACE("all stored\n");
- break;
- case EVSTATE_PART_STORED:
- TRACE("part stored: %i\n", sdias_evbuf.blk_cnt);
- break;
- case EVSTATE_NO_DATA:
- TRACE("no data\n");
- /* fall through */
- default:
- pr_err("Error from SCLP while copying hsa. "
- "Event status = %x\n",
- sdias_evbuf.event_status);
- rc = -EIO;
+ case SDIAS_EVSTATE_ALL_STORED:
+ TRACE("all stored\n");
+ break;
+ case SDIAS_EVSTATE_PART_STORED:
+ TRACE("part stored: %i\n", sdias_evbuf.blk_cnt);
+ break;
+ case SDIAS_EVSTATE_NO_DATA:
+ TRACE("no data\n");
+ /* fall through */
+ default:
+ pr_err("Error from SCLP while copying hsa. Event status = %x\n",
+ sdias_evbuf.event_status);
+ rc = -EIO;
}
out:
mutex_unlock(&sdias_mutex);
diff --git a/drivers/s390/char/sclp_sdias.h b/drivers/s390/char/sclp_sdias.h
new file mode 100644
index 00000000000..f2431c41415
--- /dev/null
+++ b/drivers/s390/char/sclp_sdias.h
@@ -0,0 +1,46 @@
+/*
+ * SCLP "store data in absolute storage"
+ *
+ * Copyright IBM Corp. 2003, 2013
+ */
+
+#ifndef SCLP_SDIAS_H
+#define SCLP_SDIAS_H
+
+#include "sclp.h"
+
+#define SDIAS_EQ_STORE_DATA 0x0
+#define SDIAS_EQ_SIZE 0x1
+#define SDIAS_DI_FCP_DUMP 0x0
+#define SDIAS_ASA_SIZE_32 0x0
+#define SDIAS_ASA_SIZE_64 0x1
+#define SDIAS_EVSTATE_ALL_STORED 0x0
+#define SDIAS_EVSTATE_NO_DATA 0x3
+#define SDIAS_EVSTATE_PART_STORED 0x10
+
+struct sdias_evbuf {
+ struct evbuf_header hdr;
+ u8 event_qual;
+ u8 data_id;
+ u64 reserved2;
+ u32 event_id;
+ u16 reserved3;
+ u8 asa_size;
+ u8 event_status;
+ u32 reserved4;
+ u32 blk_cnt;
+ u64 asa;
+ u32 reserved5;
+ u32 fbn;
+ u32 reserved6;
+ u32 lbn;
+ u16 reserved7;
+ u16 dbs;
+} __packed;
+
+struct sdias_sccb {
+ struct sccb_header hdr;
+ struct sdias_evbuf evbuf;
+} __packed;
+
+#endif /* SCLP_SDIAS_H */
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index 5aaaa2ec8df..b9a9f721716 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -97,13 +97,16 @@ static void sclp_vt220_pm_event_fn(struct sclp_register *reg,
static int __sclp_vt220_emit(struct sclp_vt220_request *request);
static void sclp_vt220_emit_current(void);
-/* Registration structure for our interest in SCLP event buffers */
+/* Registration structure for SCLP output event buffers */
static struct sclp_register sclp_vt220_register = {
.send_mask = EVTYP_VT220MSG_MASK,
+ .pm_event_fn = sclp_vt220_pm_event_fn,
+};
+
+/* Registration structure for SCLP input event buffers */
+static struct sclp_register sclp_vt220_register_input = {
.receive_mask = EVTYP_VT220MSG_MASK,
- .state_change_fn = NULL,
.receiver_fn = sclp_vt220_receiver_fn,
- .pm_event_fn = sclp_vt220_pm_event_fn,
};
@@ -362,6 +365,31 @@ sclp_vt220_timeout(unsigned long data)
#define BUFFER_MAX_DELAY HZ/20
+/*
+ * Drop oldest console buffer if sclp_con_drop is set
+ */
+static int
+sclp_vt220_drop_buffer(void)
+{
+ struct list_head *list;
+ struct sclp_vt220_request *request;
+ void *page;
+
+ if (!sclp_console_drop)
+ return 0;
+ list = sclp_vt220_outqueue.next;
+ if (sclp_vt220_queue_running)
+ /* The first element is in I/O */
+ list = list->next;
+ if (list == &sclp_vt220_outqueue)
+ return 0;
+ list_del(list);
+ request = list_entry(list, struct sclp_vt220_request, list);
+ page = request->sclp_req.sccb;
+ list_add_tail((struct list_head *) page, &sclp_vt220_empty);
+ return 1;
+}
+
/*
* Internal implementation of the write function. Write COUNT bytes of data
* from memory at BUF
@@ -390,12 +418,16 @@ __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule,
do {
/* Create an sclp output buffer if none exists yet */
if (sclp_vt220_current_request == NULL) {
+ if (list_empty(&sclp_vt220_empty))
+ sclp_console_full++;
while (list_empty(&sclp_vt220_empty)) {
- spin_unlock_irqrestore(&sclp_vt220_lock, flags);
if (may_fail || sclp_vt220_suspended)
goto out;
- else
- sclp_sync_wait();
+ if (sclp_vt220_drop_buffer())
+ break;
+ spin_unlock_irqrestore(&sclp_vt220_lock, flags);
+
+ sclp_sync_wait();
spin_lock_irqsave(&sclp_vt220_lock, flags);
}
page = (void *) sclp_vt220_empty.next;
@@ -428,8 +460,8 @@ __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule,
sclp_vt220_timer.expires = jiffies + BUFFER_MAX_DELAY;
add_timer(&sclp_vt220_timer);
}
- spin_unlock_irqrestore(&sclp_vt220_lock, flags);
out:
+ spin_unlock_irqrestore(&sclp_vt220_lock, flags);
return overall_written;
}
@@ -686,9 +718,14 @@ static int __init sclp_vt220_tty_init(void)
rc = tty_register_driver(driver);
if (rc)
goto out_init;
+ rc = sclp_register(&sclp_vt220_register_input);
+ if (rc)
+ goto out_reg;
sclp_vt220_driver = driver;
return 0;
+out_reg:
+ tty_unregister_driver(driver);
out_init:
__sclp_vt220_cleanup();
out_driver:
@@ -801,9 +838,7 @@ sclp_vt220_con_init(void)
{
int rc;
- if (!CONSOLE_IS_SCLP)
- return 0;
- rc = __sclp_vt220_init(MAX_CONSOLE_PAGES);
+ rc = __sclp_vt220_init(sclp_console_pages);
if (rc)
return rc;
/* Attach linux console */
diff --git a/drivers/s390/char/tape_class.c b/drivers/s390/char/tape_class.c
index 54b3c79203f..91c3c642c76 100644
--- a/drivers/s390/char/tape_class.c
+++ b/drivers/s390/char/tape_class.c
@@ -77,7 +77,7 @@ struct tape_class_device *register_tape_dev(
tcd->class_device = device_create(tape_class, device,
tcd->char_device->dev, NULL,
"%s", tcd->device_name);
- rc = IS_ERR(tcd->class_device) ? PTR_ERR(tcd->class_device) : 0;
+ rc = PTR_RET(tcd->class_device);
if (rc)
goto fail_with_cdev;
rc = sysfs_create_link(
diff --git a/drivers/s390/char/tape_std.c b/drivers/s390/char/tape_std.c
index 981a99fd8d4..3478e19ae19 100644
--- a/drivers/s390/char/tape_std.c
+++ b/drivers/s390/char/tape_std.c
@@ -78,7 +78,8 @@ tape_std_assign(struct tape_device *device)
rc = tape_do_io_interruptible(device, request);
- del_timer(&timeout);
+ del_timer_sync(&timeout);
+ destroy_timer_on_stack(&timeout);
if (rc != 0) {
DBF_EVENT(3, "%08x: assign failed - device might be busy\n",
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index cee69dac3e1..e91b89dc6d1 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -125,10 +125,7 @@ static void tty3270_resize_work(struct work_struct *work);
*/
static void tty3270_set_timer(struct tty3270 *tp, int expires)
{
- if (expires == 0)
- del_timer(&tp->timer);
- else
- mod_timer(&tp->timer, jiffies + expires);
+ mod_timer(&tp->timer, jiffies + expires);
}
/*
@@ -744,7 +741,6 @@ tty3270_free_view(struct tty3270 *tp)
{
int pages;
- del_timer_sync(&tp->timer);
kbd_free(tp->kbd);
raw3270_request_free(tp->kreset);
raw3270_request_free(tp->read);
@@ -810,7 +806,7 @@ static void tty3270_resize_work(struct work_struct *work)
struct winsize ws;
screen = tty3270_alloc_screen(tp->n_rows, tp->n_cols);
- if (!screen)
+ if (IS_ERR(screen))
return;
/* Switch to new output size */
spin_lock_bh(&tp->view.lock);
@@ -877,6 +873,7 @@ tty3270_free(struct raw3270_view *view)
{
struct tty3270 *tp = container_of(view, struct tty3270, view);
+ del_timer_sync(&tp->timer);
tty3270_free_screen(tp->screen, tp->view.rows);
tty3270_free_view(tp);
}
@@ -942,7 +939,7 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
return rc;
}
- tp->screen = tty3270_alloc_screen(tp->view.cols, tp->view.rows);
+ tp->screen = tty3270_alloc_screen(tp->view.rows, tp->view.cols);
if (IS_ERR(tp->screen)) {
rc = PTR_ERR(tp->screen);
raw3270_put_view(&tp->view);
@@ -1845,17 +1842,17 @@ static const struct tty_operations tty3270_ops = {
.set_termios = tty3270_set_termios
};
-void tty3270_create_cb(int minor)
+static void tty3270_create_cb(int minor)
{
tty_register_device(tty3270_driver, minor - RAW3270_FIRSTMINOR, NULL);
}
-void tty3270_destroy_cb(int minor)
+static void tty3270_destroy_cb(int minor)
{
tty_unregister_device(tty3270_driver, minor - RAW3270_FIRSTMINOR);
}
-struct raw3270_notifier tty3270_notifier =
+static struct raw3270_notifier tty3270_notifier =
{
.create = tty3270_create_cb,
.destroy = tty3270_destroy_cb,
diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c
index 9b3a24e8d3a..a8848db7b09 100644
--- a/drivers/s390/char/vmlogrdr.c
+++ b/drivers/s390/char/vmlogrdr.c
@@ -313,7 +313,7 @@ static int vmlogrdr_open (struct inode *inode, struct file *filp)
int ret;
dev_num = iminor(inode);
- if (dev_num > MAXMINOR)
+ if (dev_num >= MAXMINOR)
return -ENODEV;
logptr = &sys_ser[dev_num];
@@ -761,7 +761,7 @@ static int vmlogrdr_register_device(struct vmlogrdr_priv_t *priv)
dev = kzalloc(sizeof(struct device), GFP_KERNEL);
if (dev) {
- dev_set_name(dev, priv->internal_name);
+ dev_set_name(dev, "%s", priv->internal_name);
dev->bus = &iucv_bus;
dev->parent = iucv_root;
dev->driver = &vmlogrdr_driver;
diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c
index c180e3135b3..0efb27f6f19 100644
--- a/drivers/s390/char/vmur.c
+++ b/drivers/s390/char/vmur.c
@@ -89,7 +89,7 @@ static DEFINE_MUTEX(vmur_mutex);
* urd references:
* - ur_probe gets a urd reference, ur_remove drops the reference
* dev_get_drvdata(&cdev->dev)
- * - ur_open gets a urd reference, ur_relase drops the reference
+ * - ur_open gets a urd reference, ur_release drops the reference
* (urf->urd)
*
* cdev references:
@@ -922,8 +922,8 @@ static int ur_set_online(struct ccw_device *cdev)
goto fail_free_cdev;
}
- urd->device = device_create(vmur_class, NULL, urd->char_device->dev,
- NULL, "%s", node_id);
+ urd->device = device_create(vmur_class, &cdev->dev,
+ urd->char_device->dev, NULL, "%s", node_id);
if (IS_ERR(urd->device)) {
rc = PTR_ERR(urd->device);
TRACE("ur_set_online: device_create rc=%d\n", rc);
diff --git a/drivers/s390/char/vmwatchdog.c b/drivers/s390/char/vmwatchdog.c
deleted file mode 100644
index e9b72311e25..00000000000
--- a/drivers/s390/char/vmwatchdog.c
+++ /dev/null
@@ -1,337 +0,0 @@
-/*
- * Watchdog implementation based on z/VM Watchdog Timer API
- *
- * Copyright IBM Corp. 2004, 2009
- *
- * The user space watchdog daemon can use this driver as
- * /dev/vmwatchdog to have z/VM execute the specified CP
- * command when the timeout expires. The default command is
- * "IPL", which which cause an immediate reboot.
- */
-#define KMSG_COMPONENT "vmwatchdog"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/miscdevice.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/slab.h>
-#include <linux/suspend.h>
-#include <linux/watchdog.h>
-
-#include <asm/ebcdic.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
-#define MAX_CMDLEN 240
-#define MIN_INTERVAL 15
-static char vmwdt_cmd[MAX_CMDLEN] = "IPL";
-static bool vmwdt_conceal;
-
-static bool vmwdt_nowayout = WATCHDOG_NOWAYOUT;
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>");
-MODULE_DESCRIPTION("z/VM Watchdog Timer");
-module_param_string(cmd, vmwdt_cmd, MAX_CMDLEN, 0644);
-MODULE_PARM_DESC(cmd, "CP command that is run when the watchdog triggers");
-module_param_named(conceal, vmwdt_conceal, bool, 0644);
-MODULE_PARM_DESC(conceal, "Enable the CONCEAL CP option while the watchdog "
- " is active");
-module_param_named(nowayout, vmwdt_nowayout, bool, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started"
- " (default=CONFIG_WATCHDOG_NOWAYOUT)");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-
-static unsigned int vmwdt_interval = 60;
-static unsigned long vmwdt_is_open;
-static int vmwdt_expect_close;
-
-static DEFINE_MUTEX(vmwdt_mutex);
-
-#define VMWDT_OPEN 0 /* devnode is open or suspend in progress */
-#define VMWDT_RUNNING 1 /* The watchdog is armed */
-
-enum vmwdt_func {
- /* function codes */
- wdt_init = 0,
- wdt_change = 1,
- wdt_cancel = 2,
- /* flags */
- wdt_conceal = 0x80000000,
-};
-
-static int __diag288(enum vmwdt_func func, unsigned int timeout,
- char *cmd, size_t len)
-{
- register unsigned long __func asm("2") = func;
- register unsigned long __timeout asm("3") = timeout;
- register unsigned long __cmdp asm("4") = virt_to_phys(cmd);
- register unsigned long __cmdl asm("5") = len;
- int err;
-
- err = -EINVAL;
- asm volatile(
- " diag %1,%3,0x288\n"
- "0: la %0,0\n"
- "1:\n"
- EX_TABLE(0b,1b)
- : "+d" (err) : "d"(__func), "d"(__timeout),
- "d"(__cmdp), "d"(__cmdl) : "1", "cc");
- return err;
-}
-
-static int vmwdt_keepalive(void)
-{
- /* we allocate new memory every time to avoid having
- * to track the state. static allocation is not an
- * option since that might not be contiguous in real
- * storage in case of a modular build */
- static char *ebc_cmd;
- size_t len;
- int ret;
- unsigned int func;
-
- ebc_cmd = kmalloc(MAX_CMDLEN, GFP_KERNEL);
- if (!ebc_cmd)
- return -ENOMEM;
-
- len = strlcpy(ebc_cmd, vmwdt_cmd, MAX_CMDLEN);
- ASCEBC(ebc_cmd, MAX_CMDLEN);
- EBC_TOUPPER(ebc_cmd, MAX_CMDLEN);
-
- func = vmwdt_conceal ? (wdt_init | wdt_conceal) : wdt_init;
- set_bit(VMWDT_RUNNING, &vmwdt_is_open);
- ret = __diag288(func, vmwdt_interval, ebc_cmd, len);
- WARN_ON(ret != 0);
- kfree(ebc_cmd);
- return ret;
-}
-
-static int vmwdt_disable(void)
-{
- int ret = __diag288(wdt_cancel, 0, "", 0);
- WARN_ON(ret != 0);
- clear_bit(VMWDT_RUNNING, &vmwdt_is_open);
- return ret;
-}
-
-static int __init vmwdt_probe(void)
-{
- /* there is no real way to see if the watchdog is supported,
- * so we try initializing it with a NOP command ("BEGIN")
- * that won't cause any harm even if the following disable
- * fails for some reason */
- static char __initdata ebc_begin[] = {
- 194, 197, 199, 201, 213
- };
- if (__diag288(wdt_init, 15, ebc_begin, sizeof(ebc_begin)) != 0)
- return -EINVAL;
- return vmwdt_disable();
-}
-
-static int vmwdt_open(struct inode *i, struct file *f)
-{
- int ret;
- if (test_and_set_bit(VMWDT_OPEN, &vmwdt_is_open))
- return -EBUSY;
- ret = vmwdt_keepalive();
- if (ret)
- clear_bit(VMWDT_OPEN, &vmwdt_is_open);
- return ret ? ret : nonseekable_open(i, f);
-}
-
-static int vmwdt_close(struct inode *i, struct file *f)
-{
- if (vmwdt_expect_close == 42)
- vmwdt_disable();
- vmwdt_expect_close = 0;
- clear_bit(VMWDT_OPEN, &vmwdt_is_open);
- return 0;
-}
-
-static struct watchdog_info vmwdt_info = {
- .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
- .firmware_version = 0,
- .identity = "z/VM Watchdog Timer",
-};
-
-static int __vmwdt_ioctl(unsigned int cmd, unsigned long arg)
-{
- switch (cmd) {
- case WDIOC_GETSUPPORT:
- if (copy_to_user((void __user *)arg, &vmwdt_info,
- sizeof(vmwdt_info)))
- return -EFAULT;
- return 0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, (int __user *)arg);
- case WDIOC_GETTEMP:
- return -EINVAL;
- case WDIOC_SETOPTIONS:
- {
- int options, ret;
- if (get_user(options, (int __user *)arg))
- return -EFAULT;
- ret = -EINVAL;
- if (options & WDIOS_DISABLECARD) {
- ret = vmwdt_disable();
- if (ret)
- return ret;
- }
- if (options & WDIOS_ENABLECARD) {
- ret = vmwdt_keepalive();
- }
- return ret;
- }
- case WDIOC_GETTIMEOUT:
- return put_user(vmwdt_interval, (int __user *)arg);
- case WDIOC_SETTIMEOUT:
- {
- int interval;
- if (get_user(interval, (int __user *)arg))
- return -EFAULT;
- if (interval < MIN_INTERVAL)
- return -EINVAL;
- vmwdt_interval = interval;
- }
- return vmwdt_keepalive();
- case WDIOC_KEEPALIVE:
- return vmwdt_keepalive();
- }
- return -EINVAL;
-}
-
-static long vmwdt_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
-{
- int rc;
-
- mutex_lock(&vmwdt_mutex);
- rc = __vmwdt_ioctl(cmd, arg);
- mutex_unlock(&vmwdt_mutex);
- return (long) rc;
-}
-
-static ssize_t vmwdt_write(struct file *f, const char __user *buf,
- size_t count, loff_t *ppos)
-{
- if(count) {
- if (!vmwdt_nowayout) {
- size_t i;
-
- /* note: just in case someone wrote the magic character
- * five months ago... */
- vmwdt_expect_close = 0;
-
- for (i = 0; i != count; i++) {
- char c;
- if (get_user(c, buf+i))
- return -EFAULT;
- if (c == 'V')
- vmwdt_expect_close = 42;
- }
- }
- /* someone wrote to us, we should restart timer */
- vmwdt_keepalive();
- }
- return count;
-}
-
-static int vmwdt_resume(void)
-{
- clear_bit(VMWDT_OPEN, &vmwdt_is_open);
- return NOTIFY_DONE;
-}
-
-/*
- * It makes no sense to go into suspend while the watchdog is running.
- * Depending on the memory size, the watchdog might trigger, while we
- * are still saving the memory.
- * We reuse the open flag to ensure that suspend and watchdog open are
- * exclusive operations
- */
-static int vmwdt_suspend(void)
-{
- if (test_and_set_bit(VMWDT_OPEN, &vmwdt_is_open)) {
- pr_err("The system cannot be suspended while the watchdog"
- " is in use\n");
- return notifier_from_errno(-EBUSY);
- }
- if (test_bit(VMWDT_RUNNING, &vmwdt_is_open)) {
- clear_bit(VMWDT_OPEN, &vmwdt_is_open);
- pr_err("The system cannot be suspended while the watchdog"
- " is running\n");
- return notifier_from_errno(-EBUSY);
- }
- return NOTIFY_DONE;
-}
-
-/*
- * This function is called for suspend and resume.
- */
-static int vmwdt_power_event(struct notifier_block *this, unsigned long event,
- void *ptr)
-{
- switch (event) {
- case PM_POST_HIBERNATION:
- case PM_POST_SUSPEND:
- return vmwdt_resume();
- case PM_HIBERNATION_PREPARE:
- case PM_SUSPEND_PREPARE:
- return vmwdt_suspend();
- default:
- return NOTIFY_DONE;
- }
-}
-
-static struct notifier_block vmwdt_power_notifier = {
- .notifier_call = vmwdt_power_event,
-};
-
-static const struct file_operations vmwdt_fops = {
- .open = &vmwdt_open,
- .release = &vmwdt_close,
- .unlocked_ioctl = &vmwdt_ioctl,
- .write = &vmwdt_write,
- .owner = THIS_MODULE,
- .llseek = noop_llseek,
-};
-
-static struct miscdevice vmwdt_dev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &vmwdt_fops,
-};
-
-static int __init vmwdt_init(void)
-{
- int ret;
-
- ret = vmwdt_probe();
- if (ret)
- return ret;
- ret = register_pm_notifier(&vmwdt_power_notifier);
- if (ret)
- return ret;
- /*
- * misc_register() has to be the last action in module_init(), because
- * file operations will be available right after this.
- */
- ret = misc_register(&vmwdt_dev);
- if (ret) {
- unregister_pm_notifier(&vmwdt_power_notifier);
- return ret;
- }
- return 0;
-}
-module_init(vmwdt_init);
-
-static void __exit vmwdt_exit(void)
-{
- unregister_pm_notifier(&vmwdt_power_notifier);
- misc_deregister(&vmwdt_dev);
-}
-module_exit(vmwdt_exit);
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 9e5e14686e7..1884653e447 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -17,6 +17,8 @@
#include <linux/miscdevice.h>
#include <linux/debugfs.h>
#include <linux/module.h>
+#include <linux/memblock.h>
+
#include <asm/asm-offsets.h>
#include <asm/ipl.h>
#include <asm/sclp.h>
@@ -30,8 +32,8 @@
#define TRACE(x...) debug_sprintf_event(zcore_dbf, 1, x)
-#define TO_USER 0
-#define TO_KERNEL 1
+#define TO_USER 1
+#define TO_KERNEL 0
#define CHUNK_INFO_SIZE 34 /* 2 16-byte char, each followed by blank */
enum arch_id {
@@ -73,7 +75,7 @@ static struct ipl_parameter_block *ipl_block;
* @count: Size of buffer, which should be copied
* @mode: Either TO_KERNEL or TO_USER
*/
-static int memcpy_hsa(void *dest, unsigned long src, size_t count, int mode)
+int memcpy_hsa(void *dest, unsigned long src, size_t count, int mode)
{
int offs, blk_num;
static char buf[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE)));
@@ -151,7 +153,7 @@ static int __init init_cpu_info(enum arch_id arch)
/* get info for boot cpu from lowcore, stored in the HSA */
- sa = kmalloc(sizeof(*sa), GFP_KERNEL);
+ sa = dump_save_area_create(0);
if (!sa)
return -ENOMEM;
if (memcpy_hsa_kernel(sa, sys_info.sa_base, sys_info.sa_size) < 0) {
@@ -159,7 +161,6 @@ static int __init init_cpu_info(enum arch_id arch)
kfree(sa);
return -EIO;
}
- zfcpdump_save_areas[0] = sa;
return 0;
}
@@ -246,24 +247,25 @@ static int copy_lc(void __user *buf, void *sa, int sa_off, int len)
static int zcore_add_lc(char __user *buf, unsigned long start, size_t count)
{
unsigned long end;
- int i = 0;
+ int i;
if (count == 0)
return 0;
end = start + count;
- while (zfcpdump_save_areas[i]) {
+ for (i = 0; i < dump_save_areas.count; i++) {
unsigned long cp_start, cp_end; /* copy range */
unsigned long sa_start, sa_end; /* save area range */
unsigned long prefix;
unsigned long sa_off, len, buf_off;
+ struct save_area *save_area = dump_save_areas.areas[i];
- prefix = zfcpdump_save_areas[i]->pref_reg;
+ prefix = save_area->pref_reg;
sa_start = prefix + sys_info.sa_base;
sa_end = prefix + sys_info.sa_base + sys_info.sa_size;
if ((end < sa_start) || (start > sa_end))
- goto next;
+ continue;
cp_start = max(start, sa_start);
cp_end = min(end, sa_end);
@@ -272,10 +274,8 @@ static int zcore_add_lc(char __user *buf, unsigned long start, size_t count)
len = cp_end - cp_start;
TRACE("copy_lc for: %lx\n", start);
- if (copy_lc(buf + buf_off, zfcpdump_save_areas[i], sa_off, len))
+ if (copy_lc(buf + buf_off, save_area, sa_off, len))
return -EFAULT;
-next:
- i++;
}
return 0;
}
@@ -330,9 +330,9 @@ static ssize_t zcore_read(struct file *file, char __user *buf, size_t count,
mem_offs = 0;
/* Copy from HSA data */
- if (*ppos < (ZFCPDUMP_HSA_SIZE + HEADER_SIZE)) {
- size = min((count - hdr_count), (size_t) (ZFCPDUMP_HSA_SIZE
- - mem_start));
+ if (*ppos < sclp_get_hsa_size() + HEADER_SIZE) {
+ size = min((count - hdr_count),
+ (size_t) (sclp_get_hsa_size() - mem_start));
rc = memcpy_hsa_user(buf + hdr_count, mem_start, size);
if (rc)
goto fail;
@@ -413,33 +413,24 @@ static ssize_t zcore_memmap_read(struct file *filp, char __user *buf,
size_t count, loff_t *ppos)
{
return simple_read_from_buffer(buf, count, ppos, filp->private_data,
- MEMORY_CHUNKS * CHUNK_INFO_SIZE);
+ memblock.memory.cnt * CHUNK_INFO_SIZE);
}
static int zcore_memmap_open(struct inode *inode, struct file *filp)
{
- int i;
+ struct memblock_region *reg;
char *buf;
- struct mem_chunk *chunk_array;
+ int i = 0;
- chunk_array = kzalloc(MEMORY_CHUNKS * sizeof(struct mem_chunk),
- GFP_KERNEL);
- if (!chunk_array)
- return -ENOMEM;
- detect_memory_layout(chunk_array, 0);
- buf = kzalloc(MEMORY_CHUNKS * CHUNK_INFO_SIZE, GFP_KERNEL);
+ buf = kzalloc(memblock.memory.cnt * CHUNK_INFO_SIZE, GFP_KERNEL);
if (!buf) {
- kfree(chunk_array);
return -ENOMEM;
}
- for (i = 0; i < MEMORY_CHUNKS; i++) {
- sprintf(buf + (i * CHUNK_INFO_SIZE), "%016llx %016llx ",
- (unsigned long long) chunk_array[i].addr,
- (unsigned long long) chunk_array[i].size);
- if (chunk_array[i].size == 0)
- break;
+ for_each_memblock(memory, reg) {
+ sprintf(buf + (i++ * CHUNK_INFO_SIZE), "%016llx %016llx ",
+ (unsigned long long) reg->base,
+ (unsigned long long) reg->size);
}
- kfree(chunk_array);
filp->private_data = buf;
return nonseekable_open(inode, filp);
}
@@ -492,7 +483,7 @@ static ssize_t zcore_hsa_read(struct file *filp, char __user *buf,
static char str[18];
if (hsa_available)
- snprintf(str, sizeof(str), "%lx\n", ZFCPDUMP_HSA_SIZE);
+ snprintf(str, sizeof(str), "%lx\n", sclp_get_hsa_size());
else
snprintf(str, sizeof(str), "0\n");
return simple_read_from_buffer(buf, count, ppos, str, strlen(str));
@@ -586,38 +577,21 @@ static int __init sys_info_init(enum arch_id arch, unsigned long mem_end)
static int __init check_sdias(void)
{
- int rc, act_hsa_size;
-
- rc = sclp_sdias_blk_count();
- if (rc < 0) {
+ if (!sclp_get_hsa_size()) {
TRACE("Could not determine HSA size\n");
- return rc;
- }
- act_hsa_size = (rc - 1) * PAGE_SIZE;
- if (act_hsa_size < ZFCPDUMP_HSA_SIZE) {
- TRACE("HSA size too small: %i\n", act_hsa_size);
- return -EINVAL;
+ return -ENODEV;
}
return 0;
}
static int __init get_mem_info(unsigned long *mem, unsigned long *end)
{
- int i;
- struct mem_chunk *chunk_array;
+ struct memblock_region *reg;
- chunk_array = kzalloc(MEMORY_CHUNKS * sizeof(struct mem_chunk),
- GFP_KERNEL);
- if (!chunk_array)
- return -ENOMEM;
- detect_memory_layout(chunk_array, 0);
- for (i = 0; i < MEMORY_CHUNKS; i++) {
- if (chunk_array[i].size == 0)
- break;
- *mem += chunk_array[i].size;
- *end = max(*end, chunk_array[i].addr + chunk_array[i].size);
+ for_each_memblock(memory, reg) {
+ *mem += reg->size;
+ *end = max_t(unsigned long, *end, reg->base + reg->size);
}
- kfree(chunk_array);
return 0;
}
@@ -637,8 +611,8 @@ static void __init zcore_header_init(int arch, struct zcore_header *hdr,
hdr->num_pages = mem_size / PAGE_SIZE;
hdr->tod = get_tod_clock();
get_cpu_id(&hdr->cpu_id);
- for (i = 0; zfcpdump_save_areas[i]; i++) {
- prefix = zfcpdump_save_areas[i]->pref_reg;
+ for (i = 0; i < dump_save_areas.count; i++) {
+ prefix = dump_save_areas.areas[i]->pref_reg;
hdr->real_cpu_cnt++;
if (!prefix)
continue;
@@ -664,7 +638,7 @@ static int __init zcore_reipl_init(void)
ipl_block = (void *) __get_free_page(GFP_KERNEL);
if (!ipl_block)
return -ENOMEM;
- if (ipib_info.ipib < ZFCPDUMP_HSA_SIZE)
+ if (ipib_info.ipib < sclp_get_hsa_size())
rc = memcpy_hsa_kernel(ipl_block, ipib_info.ipib, PAGE_SIZE);
else
rc = memcpy_real(ipl_block, (void *) ipib_info.ipib, PAGE_SIZE);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 15:09:50 +0000