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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-14 02:20:19 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-14 02:20:19 +0400
commitc7708fac5a878d6e0f2de0aa19f9749cff4f707f (patch)
tree21a59cbe503ca526697f7d0bce5e0e30980bcbc0 /drivers/s390
parent3127f23f013eabe9b58132c05061684c49146ba3 (diff)
parent6726a807c38d7fd09bc23a0adc738efec6ff9492 (diff)
downloadlinux-c7708fac5a878d6e0f2de0aa19f9749cff4f707f.tar.xz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 update from Martin Schwidefsky: "Add support to generate code for the latest machine zEC12, MOD and XOR instruction support for the BPF jit compiler, the dasd safe offline feature and the big one: the s390 architecture gets PCI support!! Right before the world ends on the 21st ;-)" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (41 commits) s390/qdio: rename the misleading PCI flag of qdio devices s390/pci: remove obsolete email addresses s390/pci: speed up __iowrite64_copy by using pci store block insn s390/pci: enable NEED_DMA_MAP_STATE s390/pci: no msleep in potential IRQ context s390/pci: fix potential NULL pointer dereference in dma_free_seg_table() s390/pci: use kmem_cache_zalloc instead of kmem_cache_alloc/memset s390/bpf,jit: add support for XOR instruction s390/bpf,jit: add support MOD instruction s390/cio: fix pgid reserved check vga: compile fix, disable vga for s390 s390/pci: add PCI Kconfig options s390/pci: s390 specific PCI sysfs attributes s390/pci: PCI hotplug support via SCLP s390/pci: CHSC PCI support for error and availability events s390/pci: DMA support s390/pci: PCI adapter interrupts for MSI/MSI-X s390/bitops: find leftmost bit instruction support s390/pci: CLP interface s390/pci: base support ...
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/block/dasd.c97
-rw-r--r--drivers/s390/block/dasd_devmap.c34
-rw-r--r--drivers/s390/block/dasd_eckd.c92
-rw-r--r--drivers/s390/block/dasd_fba.c23
-rw-r--r--drivers/s390/block/dasd_int.h2
-rw-r--r--drivers/s390/block/dasd_ioctl.c11
-rw-r--r--drivers/s390/char/sclp.h3
-rw-r--r--drivers/s390/char/sclp_cmd.c81
-rw-r--r--drivers/s390/cio/ccwgroup.c26
-rw-r--r--drivers/s390/cio/chsc.c156
-rw-r--r--drivers/s390/cio/device.c11
-rw-r--r--drivers/s390/cio/device.h2
-rw-r--r--drivers/s390/cio/device_ops.c17
-rw-r--r--drivers/s390/cio/device_pgid.c10
-rw-r--r--drivers/s390/cio/qdio_main.c52
-rw-r--r--drivers/s390/cio/qdio_setup.c9
-rw-r--r--drivers/s390/cio/qdio_thinint.c2
-rw-r--r--drivers/s390/crypto/zcrypt_msgtype50.c68
-rw-r--r--drivers/s390/crypto/zcrypt_msgtype50.h2
19 files changed, 443 insertions, 255 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 0595c763dafd..29225e1c159c 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -349,6 +349,16 @@ static int dasd_state_basic_to_ready(struct dasd_device *device)
return rc;
}
+static inline
+int _wait_for_empty_queues(struct dasd_device *device)
+{
+ if (device->block)
+ return list_empty(&device->ccw_queue) &&
+ list_empty(&device->block->ccw_queue);
+ else
+ return list_empty(&device->ccw_queue);
+}
+
/*
* Remove device from block device layer. Destroy dirty buffers.
* Forget format information. Check if the target level is basic
@@ -1841,6 +1851,13 @@ static void __dasd_device_check_expire(struct dasd_device *device)
cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist);
if ((cqr->status == DASD_CQR_IN_IO && cqr->expires != 0) &&
(time_after_eq(jiffies, cqr->expires + cqr->starttime))) {
+ if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) {
+ /*
+ * IO in safe offline processing should not
+ * run out of retries
+ */
+ cqr->retries++;
+ }
if (device->discipline->term_IO(cqr) != 0) {
/* Hmpf, try again in 5 sec */
dev_err(&device->cdev->dev,
@@ -3024,11 +3041,11 @@ void dasd_generic_remove(struct ccw_device *cdev)
cdev->handler = NULL;
- dasd_remove_sysfs_files(cdev);
device = dasd_device_from_cdev(cdev);
if (IS_ERR(device))
return;
- if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags)) {
+ if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags) &&
+ !test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) {
/* Already doing offline processing */
dasd_put_device(device);
return;
@@ -3048,6 +3065,8 @@ void dasd_generic_remove(struct ccw_device *cdev)
*/
if (block)
dasd_free_block(block);
+
+ dasd_remove_sysfs_files(cdev);
}
/*
@@ -3126,16 +3145,13 @@ int dasd_generic_set_offline(struct ccw_device *cdev)
{
struct dasd_device *device;
struct dasd_block *block;
- int max_count, open_count;
+ int max_count, open_count, rc;
+ rc = 0;
device = dasd_device_from_cdev(cdev);
if (IS_ERR(device))
return PTR_ERR(device);
- if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags)) {
- /* Already doing offline processing */
- dasd_put_device(device);
- return 0;
- }
+
/*
* We must make sure that this device is currently not in use.
* The open_count is increased for every opener, that includes
@@ -3159,6 +3175,54 @@ int dasd_generic_set_offline(struct ccw_device *cdev)
return -EBUSY;
}
}
+
+ if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) {
+ /*
+ * safe offline allready running
+ * could only be called by normal offline so safe_offline flag
+ * needs to be removed to run normal offline and kill all I/O
+ */
+ if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags)) {
+ /* Already doing normal offline processing */
+ dasd_put_device(device);
+ return -EBUSY;
+ } else
+ clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags);
+
+ } else
+ if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) {
+ /* Already doing offline processing */
+ dasd_put_device(device);
+ return -EBUSY;
+ }
+
+ /*
+ * if safe_offline called set safe_offline_running flag and
+ * clear safe_offline so that a call to normal offline
+ * can overrun safe_offline processing
+ */
+ if (test_and_clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags) &&
+ !test_and_set_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) {
+ /*
+ * If we want to set the device safe offline all IO operations
+ * should be finished before continuing the offline process
+ * so sync bdev first and then wait for our queues to become
+ * empty
+ */
+ /* sync blockdev and partitions */
+ rc = fsync_bdev(device->block->bdev);
+ if (rc != 0)
+ goto interrupted;
+
+ /* schedule device tasklet and wait for completion */
+ dasd_schedule_device_bh(device);
+ rc = wait_event_interruptible(shutdown_waitq,
+ _wait_for_empty_queues(device));
+ if (rc != 0)
+ goto interrupted;
+ }
+
+ set_bit(DASD_FLAG_OFFLINE, &device->flags);
dasd_set_target_state(device, DASD_STATE_NEW);
/* dasd_delete_device destroys the device reference. */
block = device->block;
@@ -3170,6 +3234,14 @@ int dasd_generic_set_offline(struct ccw_device *cdev)
if (block)
dasd_free_block(block);
return 0;
+
+interrupted:
+ /* interrupted by signal */
+ clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags);
+ clear_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags);
+ clear_bit(DASD_FLAG_OFFLINE, &device->flags);
+ dasd_put_device(device);
+ return rc;
}
int dasd_generic_last_path_gone(struct dasd_device *device)
@@ -3489,15 +3561,6 @@ char *dasd_get_sense(struct irb *irb)
}
EXPORT_SYMBOL_GPL(dasd_get_sense);
-static inline int _wait_for_empty_queues(struct dasd_device *device)
-{
- if (device->block)
- return list_empty(&device->ccw_queue) &&
- list_empty(&device->block->ccw_queue);
- else
- return list_empty(&device->ccw_queue);
-}
-
void dasd_generic_shutdown(struct ccw_device *cdev)
{
struct dasd_device *device;
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index 20cfd028edcf..c196827c228f 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -952,6 +952,39 @@ static DEVICE_ATTR(raw_track_access, 0644, dasd_use_raw_show,
dasd_use_raw_store);
static ssize_t
+dasd_safe_offline_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ccw_device *cdev = to_ccwdev(dev);
+ struct dasd_device *device;
+ int rc;
+
+ device = dasd_device_from_cdev(cdev);
+ if (IS_ERR(device)) {
+ rc = PTR_ERR(device);
+ goto out;
+ }
+
+ if (test_bit(DASD_FLAG_OFFLINE, &device->flags) ||
+ test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) {
+ /* Already doing offline processing */
+ dasd_put_device(device);
+ rc = -EBUSY;
+ goto out;
+ }
+
+ set_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags);
+ dasd_put_device(device);
+
+ rc = ccw_device_set_offline(cdev);
+
+out:
+ return rc ? rc : count;
+}
+
+static DEVICE_ATTR(safe_offline, 0200, NULL, dasd_safe_offline_store);
+
+static ssize_t
dasd_discipline_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
@@ -1320,6 +1353,7 @@ static struct attribute * dasd_attrs[] = {
&dev_attr_expires.attr,
&dev_attr_reservation_policy.attr,
&dev_attr_last_known_reservation_state.attr,
+ &dev_attr_safe_offline.attr,
NULL,
};
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 108332b44d98..806fe912d6e7 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -1026,7 +1026,7 @@ static int dasd_eckd_read_conf(struct dasd_device *device)
{
void *conf_data;
int conf_len, conf_data_saved;
- int rc;
+ int rc, path_err;
__u8 lpm, opm;
struct dasd_eckd_private *private, path_private;
struct dasd_path *path_data;
@@ -1037,6 +1037,7 @@ static int dasd_eckd_read_conf(struct dasd_device *device)
path_data = &device->path_data;
opm = ccw_device_get_path_mask(device->cdev);
conf_data_saved = 0;
+ path_err = 0;
/* get configuration data per operational path */
for (lpm = 0x80; lpm; lpm>>= 1) {
if (!(lpm & opm))
@@ -1122,7 +1123,8 @@ static int dasd_eckd_read_conf(struct dasd_device *device)
"the same device, path %02X leads to "
"device %s instead of %s\n", lpm,
print_path_uid, print_device_uid);
- return -EINVAL;
+ path_err = -EINVAL;
+ continue;
}
path_private.conf_data = NULL;
@@ -1142,7 +1144,7 @@ static int dasd_eckd_read_conf(struct dasd_device *device)
kfree(conf_data);
}
- return 0;
+ return path_err;
}
static int verify_fcx_max_data(struct dasd_device *device, __u8 lpm)
@@ -3847,7 +3849,7 @@ dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page)
len = 0;
while (from <= to) {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" CCW %p: %08X %08X DAT:",
from, ((int *) from)[0], ((int *) from)[1]);
@@ -3908,23 +3910,23 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device,
return;
}
/* dump the sense data */
- len = sprintf(page, KERN_ERR PRINTK_HEADER
+ len = sprintf(page, PRINTK_HEADER
" I/O status report for device %s:\n",
dev_name(&device->cdev->dev));
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" in req: %p CC:%02X FC:%02X AC:%02X SC:%02X DS:%02X "
"CS:%02X RC:%d\n",
req, scsw_cc(&irb->scsw), scsw_fctl(&irb->scsw),
scsw_actl(&irb->scsw), scsw_stctl(&irb->scsw),
scsw_dstat(&irb->scsw), scsw_cstat(&irb->scsw),
req ? req->intrc : 0);
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" device %s: Failing CCW: %p\n",
dev_name(&device->cdev->dev),
(void *) (addr_t) irb->scsw.cmd.cpa);
if (irb->esw.esw0.erw.cons) {
for (sl = 0; sl < 4; sl++) {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" Sense(hex) %2d-%2d:",
(8 * sl), ((8 * sl) + 7));
@@ -3937,23 +3939,23 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device,
if (irb->ecw[27] & DASD_SENSE_BIT_0) {
/* 24 Byte Sense Data */
- sprintf(page + len, KERN_ERR PRINTK_HEADER
+ sprintf(page + len, PRINTK_HEADER
" 24 Byte: %x MSG %x, "
"%s MSGb to SYSOP\n",
irb->ecw[7] >> 4, irb->ecw[7] & 0x0f,
irb->ecw[1] & 0x10 ? "" : "no");
} else {
/* 32 Byte Sense Data */
- sprintf(page + len, KERN_ERR PRINTK_HEADER
+ sprintf(page + len, PRINTK_HEADER
" 32 Byte: Format: %x "
"Exception class %x\n",
irb->ecw[6] & 0x0f, irb->ecw[22] >> 4);
}
} else {
- sprintf(page + len, KERN_ERR PRINTK_HEADER
+ sprintf(page + len, PRINTK_HEADER
" SORRY - NO VALID SENSE AVAILABLE\n");
}
- printk("%s", page);
+ printk(KERN_ERR "%s", page);
if (req) {
/* req == NULL for unsolicited interrupts */
@@ -3962,10 +3964,10 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device,
first = req->cpaddr;
for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
to = min(first + 6, last);
- len = sprintf(page, KERN_ERR PRINTK_HEADER
+ len = sprintf(page, PRINTK_HEADER
" Related CP in req: %p\n", req);
dasd_eckd_dump_ccw_range(first, to, page + len);
- printk("%s", page);
+ printk(KERN_ERR "%s", page);
/* print failing CCW area (maximum 4) */
/* scsw->cda is either valid or zero */
@@ -3975,7 +3977,7 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device,
irb->scsw.cmd.cpa; /* failing CCW */
if (from < fail - 2) {
from = fail - 2; /* there is a gap - print header */
- len += sprintf(page, KERN_ERR PRINTK_HEADER "......\n");
+ len += sprintf(page, PRINTK_HEADER "......\n");
}
to = min(fail + 1, last);
len += dasd_eckd_dump_ccw_range(from, to, page + len);
@@ -3984,11 +3986,11 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device,
from = max(from, ++to);
if (from < last - 1) {
from = last - 1; /* there is a gap - print header */
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
+ len += sprintf(page + len, PRINTK_HEADER "......\n");
}
len += dasd_eckd_dump_ccw_range(from, last, page + len);
if (len > 0)
- printk("%s", page);
+ printk(KERN_ERR "%s", page);
}
free_page((unsigned long) page);
}
@@ -4012,10 +4014,10 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device,
return;
}
/* dump the sense data */
- len = sprintf(page, KERN_ERR PRINTK_HEADER
+ len = sprintf(page, PRINTK_HEADER
" I/O status report for device %s:\n",
dev_name(&device->cdev->dev));
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" in req: %p CC:%02X FC:%02X AC:%02X SC:%02X DS:%02X "
"CS:%02X fcxs:%02X schxs:%02X RC:%d\n",
req, scsw_cc(&irb->scsw), scsw_fctl(&irb->scsw),
@@ -4023,7 +4025,7 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device,
scsw_dstat(&irb->scsw), scsw_cstat(&irb->scsw),
irb->scsw.tm.fcxs, irb->scsw.tm.schxs,
req ? req->intrc : 0);
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" device %s: Failing TCW: %p\n",
dev_name(&device->cdev->dev),
(void *) (addr_t) irb->scsw.tm.tcw);
@@ -4035,43 +4037,42 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device,
(struct tcw *)(unsigned long)irb->scsw.tm.tcw);
if (tsb) {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->length %d\n", tsb->length);
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->flags %x\n", tsb->flags);
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->dcw_offset %d\n", tsb->dcw_offset);
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->count %d\n", tsb->count);
residual = tsb->count - 28;
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" residual %d\n", residual);
switch (tsb->flags & 0x07) {
case 1: /* tsa_iostat */
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->tsa.iostat.dev_time %d\n",
tsb->tsa.iostat.dev_time);
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->tsa.iostat.def_time %d\n",
tsb->tsa.iostat.def_time);
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->tsa.iostat.queue_time %d\n",
tsb->tsa.iostat.queue_time);
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->tsa.iostat.dev_busy_time %d\n",
tsb->tsa.iostat.dev_busy_time);
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->tsa.iostat.dev_act_time %d\n",
tsb->tsa.iostat.dev_act_time);
sense = tsb->tsa.iostat.sense;
break;
case 2: /* ts_ddpc */
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->tsa.ddpc.rc %d\n", tsb->tsa.ddpc.rc);
for (sl = 0; sl < 2; sl++) {
- len += sprintf(page + len,
- KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" tsb->tsa.ddpc.rcq %2d-%2d: ",
(8 * sl), ((8 * sl) + 7));
rcq = tsb->tsa.ddpc.rcq;
@@ -4084,15 +4085,14 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device,
sense = tsb->tsa.ddpc.sense;
break;
case 3: /* tsa_intrg */
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
- " tsb->tsa.intrg.: not supportet yet \n");
+ len += sprintf(page + len, PRINTK_HEADER
+ " tsb->tsa.intrg.: not supportet yet\n");
break;
}
if (sense) {
for (sl = 0; sl < 4; sl++) {
- len += sprintf(page + len,
- KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" Sense(hex) %2d-%2d:",
(8 * sl), ((8 * sl) + 7));
for (sct = 0; sct < 8; sct++) {
@@ -4104,27 +4104,27 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device,
if (sense[27] & DASD_SENSE_BIT_0) {
/* 24 Byte Sense Data */
- sprintf(page + len, KERN_ERR PRINTK_HEADER
+ sprintf(page + len, PRINTK_HEADER
" 24 Byte: %x MSG %x, "
"%s MSGb to SYSOP\n",
sense[7] >> 4, sense[7] & 0x0f,
sense[1] & 0x10 ? "" : "no");
} else {
/* 32 Byte Sense Data */
- sprintf(page + len, KERN_ERR PRINTK_HEADER
+ sprintf(page + len, PRINTK_HEADER
" 32 Byte: Format: %x "
"Exception class %x\n",
sense[6] & 0x0f, sense[22] >> 4);
}
} else {
- sprintf(page + len, KERN_ERR PRINTK_HEADER
+ sprintf(page + len, PRINTK_HEADER
" SORRY - NO VALID SENSE AVAILABLE\n");
}
} else {
- sprintf(page + len, KERN_ERR PRINTK_HEADER
+ sprintf(page + len, PRINTK_HEADER
" SORRY - NO TSB DATA AVAILABLE\n");
}
- printk("%s", page);
+ printk(KERN_ERR "%s", page);
free_page((unsigned long) page);
}
@@ -4161,9 +4161,7 @@ static int dasd_eckd_restore_device(struct dasd_device *device)
private = (struct dasd_eckd_private *) device->private;
/* Read Configuration Data */
- rc = dasd_eckd_read_conf(device);
- if (rc)
- goto out_err;
+ dasd_eckd_read_conf(device);
dasd_eckd_get_uid(device, &temp_uid);
/* Generate device unique id */
@@ -4183,9 +4181,7 @@ static int dasd_eckd_restore_device(struct dasd_device *device)
dasd_eckd_validate_server(device, DASD_CQR_FLAGS_FAILFAST);
/* RE-Read Configuration Data */
- rc = dasd_eckd_read_conf(device);
- if (rc)
- goto out_err;
+ dasd_eckd_read_conf(device);
/* Read Feature Codes */
dasd_eckd_read_features(device);
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index fb7f3bdc6604..eb748507c7fa 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -479,19 +479,19 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
"No memory to dump sense data");
return;
}
- len = sprintf(page, KERN_ERR PRINTK_HEADER
+ len = sprintf(page, PRINTK_HEADER
" I/O status report for device %s:\n",
dev_name(&device->cdev->dev));
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" in req: %p CS: 0x%02X DS: 0x%02X\n", req,
irb->scsw.cmd.cstat, irb->scsw.cmd.dstat);
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" device %s: Failing CCW: %p\n",
dev_name(&device->cdev->dev),
(void *) (addr_t) irb->scsw.cmd.cpa);
if (irb->esw.esw0.erw.cons) {
for (sl = 0; sl < 4; sl++) {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" Sense(hex) %2d-%2d:",
(8 * sl), ((8 * sl) + 7));
@@ -502,7 +502,7 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
len += sprintf(page + len, "\n");
}
} else {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" SORRY - NO VALID SENSE AVAILABLE\n");
}
printk(KERN_ERR "%s", page);
@@ -512,10 +512,9 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
act = req->cpaddr;
for (last = act; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
end = min(act + 8, last);
- len = sprintf(page, KERN_ERR PRINTK_HEADER
- " Related CP in req: %p\n", req);
+ len = sprintf(page, PRINTK_HEADER " Related CP in req: %p\n", req);
while (act <= end) {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" CCW %p: %08X %08X DAT:",
act, ((int *) act)[0], ((int *) act)[1]);
for (count = 0; count < 32 && count < act->count;
@@ -533,11 +532,11 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
len = 0;
if (act < ((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa) - 2) {
act = ((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa) - 2;
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
+ len += sprintf(page + len, PRINTK_HEADER "......\n");
}
end = min((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa + 2, last);
while (act <= end) {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" CCW %p: %08X %08X DAT:",
act, ((int *) act)[0], ((int *) act)[1]);
for (count = 0; count < 32 && count < act->count;
@@ -552,10 +551,10 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
/* print last CCWs */
if (act < last - 2) {
act = last - 2;
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
+ len += sprintf(page + len, PRINTK_HEADER "......\n");
}
while (act <= last) {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ len += sprintf(page + len, PRINTK_HEADER
" CCW %p: %08X %08X DAT:",
act, ((int *) act)[0], ((int *) act)[1]);
for (count = 0; count < 32 && count < act->count;
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 7ff93eea673d..899e3f5a56e5 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -516,6 +516,8 @@ struct dasd_block {
#define DASD_FLAG_IS_RESERVED 7 /* The device is reserved */
#define DASD_FLAG_LOCK_STOLEN 8 /* The device lock was stolen */
#define DASD_FLAG_SUSPENDED 9 /* The device was suspended */
+#define DASD_FLAG_SAFE_OFFLINE 10 /* safe offline processing requested*/
+#define DASD_FLAG_SAFE_OFFLINE_RUNNING 11 /* safe offline running */
void dasd_put_device_wake(struct dasd_device *);
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index 8252f37d04ed..03c0e0444553 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -19,6 +19,7 @@
#include <linux/slab.h>
#include <asm/compat.h>
#include <asm/ccwdev.h>
+#include <asm/schid.h>
#include <asm/cmb.h>
#include <asm/uaccess.h>
@@ -308,11 +309,12 @@ static int dasd_ioctl_information(struct dasd_block *block,
unsigned int cmd, void __user *argp)
{
struct dasd_information2_t *dasd_info;
- unsigned long flags;
- int rc;
+ struct subchannel_id sch_id;
+ struct ccw_dev_id dev_id;
struct dasd_device *base;
struct ccw_device *cdev;
- struct ccw_dev_id dev_id;
+ unsigned long flags;
+ int rc;
base = block->base;
if (!base->discipline || !base->discipline->fill_info)
@@ -330,9 +332,10 @@ static int dasd_ioctl_information(struct dasd_block *block,
cdev = base->cdev;
ccw_device_get_id(cdev, &dev_id);
+ ccw_device_get_schid(cdev, &sch_id);
dasd_info->devno = dev_id.devno;
- dasd_info->schid = _ccw_device_get_subchannel_number(base->cdev);
+ dasd_info->schid = sch_id.sch_no;
dasd_info->cu_type = cdev->id.cu_type;
dasd_info->cu_model = cdev->id.cu_model;
dasd_info->dev_type = cdev->id.dev_type;
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h
index d7e97ae9ef6d..25bcd4c0ed82 100644
--- a/drivers/s390/char/sclp.h
+++ b/drivers/s390/char/sclp.h
@@ -1,5 +1,5 @@
/*
- * Copyright IBM Corp. 1999, 2009
+ * Copyright IBM Corp. 1999,2012
*
* Author(s): Martin Peschke <mpeschke@de.ibm.com>
* Martin Schwidefsky <schwidefsky@de.ibm.com>
@@ -103,6 +103,7 @@ extern u64 sclp_facilities;
#define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL)
#define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL)
#define SCLP_HAS_CPU_RECONFIG (sclp_facilities & 0x0400000000000000ULL)
+#define SCLP_HAS_PCI_RECONFIG (sclp_facilities & 0x0000000040000000ULL)
struct gds_subvector {
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index 71ea923c322d..c44d13f607bc 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -1,5 +1,5 @@
/*
- * Copyright IBM Corp. 2007, 2009
+ * Copyright IBM Corp. 2007,2012
*
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
* Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
@@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/err.h>
+#include <linux/export.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/mm.h>
@@ -19,10 +20,11 @@
#include <linux/memory.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <asm/ctl_reg.h>
#include <asm/chpid.h>
-#include <asm/sclp.h>
#include <asm/setup.h>
-#include <asm/ctl_reg.h>
+#include <asm/page.h>
+#include <asm/sclp.h>
#include "sclp.h"
@@ -400,17 +402,15 @@ out:
static int sclp_assign_storage(u16 rn)
{
- unsigned long long start, address;
+ unsigned long long start;
int rc;
rc = do_assign_storage(0x000d0001, rn);
if (rc)
- goto out;
- start = address = rn2addr(rn);
- for (; address < start + rzm; address += PAGE_SIZE)
- page_set_storage_key(address, PAGE_DEFAULT_KEY, 0);
-out:
- return rc;
+ return rc;
+ start = rn2addr(rn);
+ storage_key_init_range(start, start + rzm);
+ return 0;
}
static int sclp_unassign_storage(u16 rn)
@@ -702,6 +702,67 @@ __initcall(sclp_detect_standby_memory);
#endif /* CONFIG_MEMORY_HOTPLUG */
/*
+ * PCI I/O adapter configuration related functions.
+ */
+#define SCLP_CMDW_CONFIGURE_PCI 0x001a0001
+#define SCLP_CMDW_DECONFIGURE_PCI 0x001b0001
+
+#define SCLP_RECONFIG_PCI_ATPYE 2
+
+struct pci_cfg_sccb {
+ struct sccb_header header;
+ u8 atype; /* adapter type */
+ u8 reserved1;
+ u16 reserved2;
+ u32 aid; /* adapter identifier */
+} __packed;
+
+static int do_pci_configure(sclp_cmdw_t cmd, u32 fid)
+{
+ struct pci_cfg_sccb *sccb;
+ int rc;
+
+ if (!SCLP_HAS_PCI_RECONFIG)
+ return -EOPNOTSUPP;
+
+ sccb = (struct pci_cfg_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!sccb)
+ return -ENOMEM;
+
+ sccb->header.length = PAGE_SIZE;
+ sccb->atype = SCLP_RECONFIG_PCI_ATPYE;
+ sccb->aid = fid;
+ rc = do_sync_request(cmd, sccb);
+ if (rc)
+ goto out;
+ switch (sccb->header.response_code) {
+ case 0x0020:
+ case 0x0120:
+ break;
+ default:
+ pr_warn("configure PCI I/O adapter failed: cmd=0x%08x response=0x%04x\n",
+ cmd, sccb->header.response_code);
+ rc = -EIO;
+ break;
+ }
+out:
+ free_page((unsigned long) sccb);
+ return rc;
+}
+
+int sclp_pci_configure(u32 fid)
+{
+ return do_pci_configure(SCLP_CMDW_CONFIGURE_PCI, fid);
+}
+EXPORT_SYMBOL(sclp_pci_configure);
+
+int sclp_pci_deconfigure(u32 fid)
+{
+ return do_pci_configure(SCLP_CMDW_DECONFIGURE_PCI, fid);
+}
+EXPORT_SYMBOL(sclp_pci_deconfigure);
+
+/*
* Channel path configuration related functions.
*/
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 731470e68493..84846c2b96d3 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -65,10 +65,18 @@ static void __ccwgroup_remove_cdev_refs(struct ccwgroup_device *gdev)
}
}
-static int ccwgroup_set_online(struct ccwgroup_device *gdev)
+/**
+ * ccwgroup_set_online() - enable a ccwgroup device
+ * @gdev: target ccwgroup device
+ *
+ * This function attempts to put the ccwgroup device into the online state.
+ * Returns:
+ * %0 on success and a negative error value on failure.
+ */
+int ccwgroup_set_online(struct ccwgroup_device *gdev)
{
struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);
- int ret = 0;
+ int ret = -EINVAL;
if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)
return -EAGAIN;
@@ -84,11 +92,20 @@ out:
atomic_set(&gdev->onoff, 0);
return ret;
}
+EXPORT_SYMBOL(ccwgroup_set_online);
-static int ccwgroup_set_offline(struct ccwgroup_device *gdev)
+/**
+ * ccwgroup_set_offline() - disable a ccwgroup device
+ * @gdev: target ccwgroup device
+ *
+ * This function attempts to put the ccwgroup device into the offline state.
+ * Returns:
+ * %0 on success and a negative error value on failure.
+ */
+int ccwgroup_set_offline(struct ccwgroup_device *gdev)
{
struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);
- int ret = 0;
+ int ret = -EINVAL;
if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)
return -EAGAIN;
@@ -104,6 +121,7 @@ out:
atomic_set(&gdev->onoff, 0);
return ret;
}
+EXPORT_SYMBOL(ccwgroup_set_offline);
static ssize_t ccwgroup_online_store(struct device *dev,
struct device_attribute *attr,
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 4d51a7c4eb8b..68e80e2734a4 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -1,7 +1,7 @@
/*
* S/390 common I/O routines -- channel subsystem call
*
- * Copyright IBM Corp. 1999, 2010
+ * Copyright IBM Corp. 1999,2012
* Author(s): Ingo Adlung (adlung@de.ibm.com)
* Cornelia Huck (cornelia.huck@de.ibm.com)
* Arnd Bergmann (arndb@de.ibm.com)
@@ -14,6 +14,7 @@
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/device.h>
+#include <linux/pci.h>
#include <asm/cio.h>
#include <asm/chpid.h>
@@ -260,26 +261,45 @@ __get_chpid_from_lir(void *data)
return (u16) (lir->indesc[0]&0x000000ff);
}
-struct chsc_sei_area {
- struct chsc_header request;
+struct chsc_sei_nt0_area {
+ u8 flags;
+ u8 vf; /* validity flags */
+ u8 rs; /* reporting source */
+ u8 cc; /* content code */
+ u16 fla; /* full link address */
+ u16 rsid; /* reporting source id */
u32 reserved1;
u32 reserved2;
- u32 reserved3;
- struct chsc_header response;
- u32 reserved4;
- u8 flags;
- u8 vf; /* validity flags */
- u8 rs; /* reporting source */
- u8 cc; /* content code */
- u16 fla; /* full link address */
- u16 rsid; /* reporting source id */
- u32 reserved5;
- u32 reserved6;
- u8 ccdf[4096 - 16 - 24]; /* content-code dependent field */
/* ccdf has to be big enough for a link-incident record */
-} __attribute__ ((packed));
-
-static void chsc_process_sei_link_incident(struct chsc_sei_area *sei_area)
+ u8 ccdf[PAGE_SIZE - 24 - 16]; /* content-code dependent field */
+} __packed;
+
+struct chsc_sei_nt2_area {
+ u8 flags; /* p and v bit */
+ u8 reserved1;
+ u8 reserved2;
+ u8 cc; /* content code */
+ u32 reserved3[13];
+ u8 ccdf[PAGE_SIZE - 24 - 56]; /* content-code dependent field */
+} __packed;
+
+#define CHSC_SEI_NT0 0ULL
+#define CHSC_SEI_NT2 (1ULL << 61)
+
+struct chsc_sei {
+ struct chsc_header request;
+ u32 reserved1;
+ u64 ntsm; /* notification type mask */
+ struct chsc_header response;
+ u32 reserved2;
+ union {
+ struct chsc_sei_nt0_area nt0_area;
+ struct chsc_sei_nt2_area nt2_area;
+ u8 nt_area[PAGE_SIZE - 24];
+ } u;
+} __packed;
+
+static void chsc_process_sei_link_incident(struct chsc_sei_nt0_area *sei_area)
{
struct chp_id chpid;
int id;
@@ -298,7 +318,7 @@ static void chsc_process_sei_link_incident(struct chsc_sei_area *sei_area)
}
}
-static void chsc_process_sei_res_acc(struct chsc_sei_area *sei_area)
+static void chsc_process_sei_res_acc(struct chsc_sei_nt0_area *sei_area)
{
struct chp_link link;
struct chp_id chpid;
@@ -330,7 +350,7 @@ static void chsc_process_sei_res_acc(struct chsc_sei_area *sei_area)
s390_process_res_acc(&link);
}
-static void chsc_process_sei_chp_avail(struct chsc_sei_area *sei_area)
+static void chsc_process_sei_chp_avail(struct chsc_sei_nt0_area *sei_area)
{
struct channel_path *chp;
struct chp_id chpid;
@@ -366,7 +386,7 @@ struct chp_config_data {
u8 pc;
};
-static void chsc_process_sei_chp_config(struct chsc_sei_area *sei_area)
+static void chsc_process_sei_chp_config(struct chsc_sei_nt0_area *sei_area)
{
struct chp_config_data *data;
struct chp_id chpid;
@@ -398,7 +418,7 @@ static void chsc_process_sei_chp_config(struct chsc_sei_area *sei_area)
}
}
-static void chsc_process_sei_scm_change(struct chsc_sei_area *sei_area)
+static void chsc_process_sei_scm_change(struct chsc_sei_nt0_area *sei_area)
{
int ret;
@@ -412,13 +432,26 @@ static void chsc_process_sei_scm_change(struct chsc_sei_area *sei_area)
" failed (rc=%d).\n", ret);
}
-static void chsc_process_sei(struct chsc_sei_area *sei_area)
+static void chsc_process_sei_nt2(struct chsc_sei_nt2_area *sei_area)
{
- /* Check if we might have lost some information. */
- if (sei_area->flags & 0x40) {
- CIO_CRW_EVENT(2, "chsc: event overflow\n");
- css_schedule_eval_all();
+#ifdef CONFIG_PCI
+ switch (sei_area->cc) {
+ case 1:
+ zpci_event_error(sei_area->ccdf);
+ break;
+ case 2:
+ zpci_event_availability(sei_area->ccdf);
+ break;
+ default:
+ CIO_CRW_EVENT(2, "chsc: unhandled sei content code %d\n",
+ sei_area->cc);
+ break;
}
+#endif
+}
+
+static void chsc_process_sei_nt0(struct chsc_sei_nt0_area *sei_area)
+{
/* which kind of information was stored? */
switch (sei_area->cc) {
case 1: /* link incident*/
@@ -443,9 +476,51 @@ static void chsc_process_sei(struct chsc_sei_area *sei_area)
}
}
+static int __chsc_process_crw(struct chsc_sei *sei, u64 ntsm)
+{
+ do {
+ memset(sei, 0, sizeof(*sei));
+ sei->request.length = 0x0010;
+ sei->request.code = 0x000e;
+ sei->ntsm = ntsm;
+
+ if (chsc(sei))
+ break;
+
+ if (sei->response.code == 0x0001) {
+ CIO_CRW_EVENT(2, "chsc: sei successful\n");
+
+ /* Check if we might have lost some information. */
+ if (sei->u.nt0_area.flags & 0x40) {
+ CIO_CRW_EVENT(2, "chsc: event overflow\n");
+ css_schedule_eval_all();
+ }
+
+ switch (sei->ntsm) {
+ case CHSC_SEI_NT0:
+ chsc_process_sei_nt0(&sei->u.nt0_area);
+ return 1;
+ case CHSC_SEI_NT2:
+ chsc_process_sei_nt2(&sei->u.nt2_area);
+ return 1;
+ default:
+ CIO_CRW_EVENT(2, "chsc: unhandled nt (nt=%08Lx)\n",
+ sei->ntsm);
+ return 0;
+ }
+ } else {
+ CIO_CRW_EVENT(2, "chsc: sei failed (rc=%04x)\n",
+ sei->response.code);
+ break;
+ }
+ } while (sei->u.nt0_area.flags & 0x80);
+
+ return 0;
+}
+
static void chsc_process_crw(struct crw *crw0, struct crw *crw1, int overflow)
{
- struct chsc_sei_area *sei_area;
+ struct chsc_sei *sei;
if (overflow) {
css_schedule_eval_all();
@@ -459,25 +534,18 @@ static void chsc_process_crw(struct crw *crw0, struct crw *crw1, int overflow)
return;
/* Access to sei_page is serialized through machine check handler
* thread, so no need for locking. */
- sei_area = sei_page;
+ sei = sei_page;
CIO_TRACE_EVENT(2, "prcss");
- do {
- memset(sei_area, 0, sizeof(*sei_area));
- sei_area->request.length = 0x0010;
- sei_area->request.code = 0x000e;
- if (chsc(sei_area))
- break;
- if (sei_area->response.code == 0x0001) {
- CIO_CRW_EVENT(4, "chsc: sei successful\n");
- chsc_process_sei(sei_area);
- } else {
- CIO_CRW_EVENT(2, "chsc: sei failed (rc=%04x)\n",
- sei_area->response.code);
- break;
- }
- } while (sei_area->flags & 0x80);
+ /*
+ * The ntsm does not allow to select NT0 and NT2 together. We need to
+ * first check for NT2, than additionally for NT0...
+ */
+#ifdef CONFIG_PCI
+ if (!__chsc_process_crw(sei, CHSC_SEI_NT2))
+#endif
+ __chsc_process_crw(sei, CHSC_SEI_NT0);
}
void chsc_chp_online(struct chp_id chpid)
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index fd3143c291c6..6995cff44636 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -2036,16 +2036,6 @@ void ccw_driver_unregister(struct ccw_driver *cdriver)
driver_unregister(&cdriver->driver);
}
-/* Helper func for qdio. */
-struct subchannel_id
-ccw_device_get_subchannel_id(struct ccw_device *cdev)
-{
- struct subchannel *sch;
-
- sch = to_subchannel(cdev->dev.parent);
- return sch->schid;
-}
-
static void ccw_device_todo(struct work_struct *work)
{
struct ccw_device_private *priv;
@@ -2138,4 +2128,3 @@ EXPORT_SYMBOL(ccw_device_set_offline);
EXPORT_SYMBOL(ccw_driver_register);
EXPORT_SYMBOL(ccw_driver_unregister);
EXPORT_SYMBOL(get_ccwdev_by_busid);
-EXPORT_SYMBOL_GPL(ccw_device_get_subchannel_id);
diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h
index 6bace6942396..2e575cff9845 100644
--- a/drivers/s390/cio/device.h
+++ b/drivers/s390/cio/device.h
@@ -142,9 +142,7 @@ int ccw_device_notify(struct ccw_device *, int);
void ccw_device_set_disconnected(struct ccw_device *cdev);
void ccw_device_set_notoper(struct ccw_device *cdev);
-/* qdio needs this. */
void ccw_device_set_timeout(struct ccw_device *, int);
-extern struct subchannel_id ccw_device_get_subchannel_id(struct ccw_device *);
/* Channel measurement facility related */
void retry_set_schib(struct ccw_device *cdev);
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index ec7fb6d3b479..c77b6e06bf64 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -755,14 +755,18 @@ int ccw_device_tm_intrg(struct ccw_device *cdev)
}
EXPORT_SYMBOL(ccw_device_tm_intrg);
-// FIXME: these have to go:
-
-int
-_ccw_device_get_subchannel_number(struct ccw_device *cdev)
+/**
+ * ccw_device_get_schid - obtain a subchannel id
+ * @cdev: device to obtain the id for
+ * @schid: where to fill in the values
+ */
+void ccw_device_get_schid(struct ccw_device *cdev, struct subchannel_id *schid)
{
- return cdev->private->schid.sch_no;
-}
+ struct subchannel *sch = to_subchannel(cdev->dev.parent);
+ *schid = sch->schid;
+}
+EXPORT_SYMBOL_GPL(ccw_device_get_schid);
MODULE_LICENSE("GPL");
EXPORT_SYMBOL(ccw_device_set_options_mask);
@@ -777,5 +781,4 @@ EXPORT_SYMBOL(ccw_device_start_timeout_key);
EXPORT_SYMBOL(ccw_device_start_key);
EXPORT_SYMBOL(ccw_device_get_ciw);
EXPORT_SYMBOL(ccw_device_get_path_mask);
-EXPORT_SYMBOL(_ccw_device_get_subchannel_number);
EXPORT_SYMBOL_GPL(ccw_device_get_chp_desc);
diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c
index 368368fe04b2..908d287f66c1 100644
--- a/drivers/s390/cio/device_pgid.c
+++ b/drivers/s390/cio/device_pgid.c
@@ -234,7 +234,7 @@ static int pgid_cmp(struct pgid *p1, struct pgid *p2)
* Determine pathgroup state from PGID data.
*/
static void pgid_analyze(struct ccw_device *cdev, struct pgid **p,
- int *mismatch, int *reserved, u8 *reset)
+ int *mismatch, u8 *reserved, u8 *reset)
{
struct pgid *pgid = &cdev->private->pgid[0];
struct pgid *first = NULL;
@@ -248,7 +248,7 @@ static void pgid_analyze(struct ccw_device *cdev, struct pgid **p,
if ((cdev->private->pgid_valid_mask & lpm) == 0)
continue;
if (pgid->inf.ps.state2 == SNID_STATE2_RESVD_ELSE)
- *reserved = 1;
+ *reserved |= lpm;
if (pgid_is_reset(pgid)) {
*reset |= lpm;
continue;
@@ -316,14 +316,14 @@ static void snid_done(struct ccw_device *cdev, int rc)
struct subchannel *sch = to_subchannel(cdev->dev.parent);
struct pgid *pgid;
int mismatch = 0;
- int reserved = 0;
+ u8 reserved = 0;
u8 reset = 0;
u8 donepm;
if (rc)
goto out;
pgid_analyze(cdev, &pgid, &mismatch, &reserved, &reset);
- if (reserved)
+ if (reserved == cdev->private->pgid_valid_mask)
rc = -EUSERS;
else if (mismatch)
rc = -EOPNOTSUPP;
@@ -336,7 +336,7 @@ static void snid_done(struct ccw_device *cdev, int rc)
}
out:
CIO_MSG_EVENT(2, "snid: device 0.%x.%04x: rc=%d pvm=%02x vpm=%02x "
- "todo=%02x mism=%d rsvd=%d reset=%02x\n", id->ssid,
+ "todo=%02x mism=%d rsvd=%02x reset=%02x\n", id->ssid,
id->devno, rc, cdev->private->pgid_valid_mask, sch->vpm,
cdev->private->pgid_todo_mask, mismatch, reserved, reset);
switch (rc) {
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index e06fa03ea1e4..1671d3461f29 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -129,7 +129,6 @@ static int qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
int rc, tmp_count = count, tmp_start = start, nr = q->nr, retried = 0;
unsigned int ccq = 0;
- BUG_ON(!q->irq_ptr->sch_token);
qperf_inc(q, eqbs);
if (!q->is_input_q)
@@ -147,7 +146,6 @@ again:
}
if (rc == 2) {
- BUG_ON(tmp_count == count);
qperf_inc(q, eqbs_partial);
DBF_DEV_EVENT(DBF_WARN, q->irq_ptr, "EQBS part:%02x",
tmp_count);
@@ -189,8 +187,6 @@ static int qdio_do_sqbs(struct qdio_q *q, unsigned char state, int start,
if (!count)
return 0;
-
- BUG_ON(!q->irq_ptr->sch_token);
qperf_inc(q, sqbs);
if (!q->is_input_q)
@@ -199,7 +195,7 @@ again:
ccq = do_sqbs(q->irq_ptr->sch_token, state, nr, &tmp_start, &tmp_count);
rc = qdio_check_ccq(q, ccq);
if (!rc) {
- WARN_ON(tmp_count);
+ WARN_ON_ONCE(tmp_count);
return count - tmp_count;
}
@@ -224,9 +220,6 @@ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr,
unsigned char __state = 0;
int i;
- BUG_ON(bufnr > QDIO_MAX_BUFFERS_MASK);
- BUG_ON(count > QDIO_MAX_BUFFERS_PER_Q);
-
if (is_qebsm(q))
return qdio_do_eqbs(q, state, bufnr, count, auto_ack);
@@ -258,9 +251,6 @@ static inline int set_buf_states(struct qdio_q *q, int bufnr,
{
int i;
- BUG_ON(bufnr > QDIO_MAX_BUFFERS_MASK);
- BUG_ON(count > QDIO_MAX_BUFFERS_PER_Q);
-
if (is_qebsm(q))
return qdio_do_sqbs(q, state, bufnr, count);
@@ -345,7 +335,6 @@ again:
/* hipersocket busy condition */
if (unlikely(*busy_bit)) {
- WARN_ON(queue_type(q) != QDIO_IQDIO_QFMT || cc != 2);
retries++;
if (!start_time) {
@@ -559,7 +548,7 @@ static int get_inbound_buffer_frontier(struct qdio_q *q)
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in nop");
break;
default:
- BUG();
+ WARN_ON_ONCE(1);
}
out:
return q->first_to_check;
@@ -678,12 +667,10 @@ static inline void qdio_handle_aobs(struct qdio_q *q, int start, int count)
if (aob == NULL)
continue;
- BUG_ON(q->u.out.sbal_state == NULL);
q->u.out.sbal_state[b].flags |=
QDIO_OUTBUF_STATE_FLAG_PENDING;
q->u.out.aobs[b] = NULL;
} else if (state == SLSB_P_OUTPUT_EMPTY) {
- BUG_ON(q->u.out.sbal_state == NULL);
q->u.out.sbal_state[b].aob = NULL;
}
b = next_buf(b);
@@ -703,12 +690,11 @@ static inline unsigned long qdio_aob_for_buffer(struct qdio_output_q *q,
q->aobs[bufnr] = aob;
}
if (q->aobs[bufnr]) {
- BUG_ON(q->sbal_state == NULL);
q->sbal_state[bufnr].flags = QDIO_OUTBUF_STATE_FLAG_NONE;
q->sbal_state[bufnr].aob = q->aobs[bufnr];
q->aobs[bufnr]->user1 = (u64) q->sbal_state[bufnr].user;
phys_aob = virt_to_phys(q->aobs[bufnr]);
- BUG_ON(phys_aob & 0xFF);
+ WARN_ON_ONCE(phys_aob & 0xFF);
}
out:
@@ -809,8 +795,6 @@ static int get_outbound_buffer_frontier(struct qdio_q *q)
goto out;
switch (state) {
- case SLSB_P_OUTPUT_PENDING:
- BUG();
case SLSB_P_OUTPUT_EMPTY:
/* the adapter got it */
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr,
@@ -840,7 +824,7 @@ static int get_outbound_buffer_frontier(struct qdio_q *q)
case SLSB_P_OUTPUT_HALTED:
break;
default:
- BUG();
+ WARN_ON_ONCE(1);
}
out:
@@ -912,7 +896,7 @@ retry:
static void __qdio_outbound_processing(struct qdio_q *q)
{
qperf_inc(q, tasklet_outbound);
- BUG_ON(atomic_read(&q->nr_buf_used) < 0);
+ WARN_ON_ONCE(atomic_read(&q->nr_buf_used) < 0);
if (qdio_outbound_q_moved(q))
qdio_kick_handler(q);
@@ -1138,16 +1122,10 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
irq_ptr->perf_stat.qdio_int++;
if (IS_ERR(irb)) {
- switch (PTR_ERR(irb)) {
- case -EIO:
- DBF_ERROR("%4x IO error", irq_ptr->schid.sch_no);
- qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
- wake_up(&cdev->private->wait_q);
- return;
- default:
- WARN_ON(1);
- return;
- }
+ DBF_ERROR("%4x IO error", irq_ptr->schid.sch_no);
+ qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
+ wake_up(&cdev->private->wait_q);
+ return;
}
qdio_irq_check_sense(irq_ptr, irb);
cstat = irb->scsw.cmd.cstat;
@@ -1173,7 +1151,7 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
case QDIO_IRQ_STATE_STOPPED:
break;
default:
- WARN_ON(1);
+ WARN_ON_ONCE(1);
}
wake_up(&cdev->private->wait_q);
}
@@ -1227,7 +1205,7 @@ int qdio_shutdown(struct ccw_device *cdev, int how)
if (!irq_ptr)
return -ENODEV;
- BUG_ON(irqs_disabled());
+ WARN_ON_ONCE(irqs_disabled());
DBF_EVENT("qshutdown:%4x", cdev->private->schid.sch_no);
mutex_lock(&irq_ptr->setup_mutex);
@@ -1358,7 +1336,6 @@ int qdio_allocate(struct qdio_initialize *init_data)
irq_ptr->qdr = (struct qdr *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
if (!irq_ptr->qdr)
goto out_rel;
- WARN_ON((unsigned long)irq_ptr->qdr & 0xfff);
if (qdio_allocate_qs(irq_ptr, init_data->no_input_qs,
init_data->no_output_qs))
@@ -1597,9 +1574,7 @@ static int handle_inbound(struct qdio_q *q, unsigned int callflags,
set:
count = set_buf_states(q, bufnr, SLSB_CU_INPUT_EMPTY, count);
-
used = atomic_add_return(count, &q->nr_buf_used) - count;
- BUG_ON(used + count > QDIO_MAX_BUFFERS_PER_Q);
if (need_siga_in(q))
return qdio_siga_input(q);
@@ -1624,7 +1599,6 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags,
count = set_buf_states(q, bufnr, SLSB_CU_OUTPUT_PRIMED, count);
used = atomic_add_return(count, &q->nr_buf_used);
- BUG_ON(used > QDIO_MAX_BUFFERS_PER_Q);
if (used == QDIO_MAX_BUFFERS_PER_Q)
qperf_inc(q, outbound_queue_full);
@@ -1678,7 +1652,6 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
{
struct qdio_irq *irq_ptr;
-
if (bufnr >= QDIO_MAX_BUFFERS_PER_Q || count > QDIO_MAX_BUFFERS_PER_Q)
return -EINVAL;
@@ -1721,8 +1694,6 @@ int qdio_start_irq(struct ccw_device *cdev, int nr)
return -ENODEV;
q = irq_ptr->input_qs[nr];
- WARN_ON(queue_irqs_enabled(q));
-
clear_nonshared_ind(irq_ptr);
qdio_stop_polling(q);
clear_bit(QDIO_QUEUE_IRQS_DISABLED, &q->u.in.queue_irq_state);
@@ -1769,7 +1740,6 @@ int qdio_get_next_buffers(struct ccw_device *cdev, int nr, int *bufnr,
if (!irq_ptr)
return -ENODEV;
q = irq_ptr->input_qs[nr];
- WARN_ON(queue_irqs_enabled(q));
/*
* Cannot rely on automatic sync after interrupt since queues may
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 6c973db14983..16ecd35b8e51 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -140,10 +140,8 @@ static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr,
q->sl = (struct sl *)((char *)q->slib + PAGE_SIZE / 2);
/* fill in sbal */
- for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) {
+ for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
q->sbal[j] = *sbals_array++;
- BUG_ON((unsigned long)q->sbal[j] & 0xff);
- }
/* fill in slib */
if (i > 0) {
@@ -434,9 +432,8 @@ int qdio_setup_irq(struct qdio_initialize *init_data)
irq_ptr->int_parm = init_data->int_parm;
irq_ptr->nr_input_qs = init_data->no_input_qs;
irq_ptr->nr_output_qs = init_data->no_output_qs;
-
- irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev);
irq_ptr->cdev = init_data->cdev;
+ ccw_device_get_schid(irq_ptr->cdev, &irq_ptr->schid);
setup_queues(irq_ptr, init_data);
setup_qib(irq_ptr, init_data);
@@ -483,7 +480,7 @@ void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
char s[80];
snprintf(s, 80, "qdio: %s %s on SC %x using "
- "AI:%d QEBSM:%d PCI:%d TDD:%d SIGA:%s%s%s%s%s\n",
+ "AI:%d QEBSM:%d PRI:%d TDD:%d SIGA:%s%s%s%s%s\n",
dev_name(&cdev->dev),
(irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" :
((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"),
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index 2e060088fa87..bdb394b066fc 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -73,7 +73,6 @@ static void put_indicator(u32 *addr)
void tiqdio_add_input_queues(struct qdio_irq *irq_ptr)
{
mutex_lock(&tiq_list_lock);
- BUG_ON(irq_ptr->nr_input_qs < 1);
list_add_rcu(&irq_ptr->input_qs[0]->entry, &tiq_list);
mutex_unlock(&tiq_list_lock);
xchg(irq_ptr->dsci, 1 << 7);
@@ -83,7 +82,6 @@ void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr)
{
struct qdio_q *q;
- BUG_ON(irq_ptr->nr_input_qs < 1);
q = irq_ptr->input_qs[0];
/* if establish triggered an error */
if (!q || !q->entry.prev || !q->entry.next)
diff --git a/drivers/s390/crypto/zcrypt_msgtype50.c b/drivers/s390/crypto/zcrypt_msgtype50.c
index 035b6dc31b71..7c522f338bda 100644
--- a/drivers/s390/crypto/zcrypt_msgtype50.c
+++ b/drivers/s390/crypto/zcrypt_msgtype50.c
@@ -241,84 +241,70 @@ static int ICACRT_msg_to_type50CRT_msg(struct zcrypt_device *zdev,
struct ap_message *ap_msg,
struct ica_rsa_modexpo_crt *crt)
{
- int mod_len, short_len, long_len, long_offset, limit;
+ int mod_len, short_len;
unsigned char *p, *q, *dp, *dq, *u, *inp;
mod_len = crt->inputdatalength;
short_len = mod_len / 2;
- long_len = mod_len / 2 + 8;
/*
- * CEX2A cannot handle p, dp, or U > 128 bytes.
- * If we have one of these, we need to do extra checking.
- * For CEX3A the limit is 256 bytes.
+ * CEX2A and CEX3A w/o FW update can handle requests up to
+ * 256 byte modulus (2k keys).
+ * CEX3A with FW update and CEX4A cards are able to handle
+ * 512 byte modulus (4k keys).
*/
- if (zdev->max_mod_size == CEX3A_MAX_MOD_SIZE)
- limit = 256;
- else
- limit = 128;
-
- if (long_len > limit) {
- /*
- * zcrypt_rsa_crt already checked for the leading
- * zeroes of np_prime, bp_key and u_mult_inc.
- */
- long_offset = long_len - limit;
- long_len = limit;
- } else
- long_offset = 0;
-
- /*
- * Instead of doing extra work for p, dp, U > 64 bytes, we'll just use
- * the larger message structure.
- */
- if (long_len <= 64) {
+ if (mod_len <= 128) { /* up to 1024 bit key size */
struct type50_crb1_msg *crb1 = ap_msg->message;
memset(crb1, 0, sizeof(*crb1));
ap_msg->length = sizeof(*crb1);
crb1->header.msg_type_code = TYPE50_TYPE_CODE;
crb1->header.msg_len = sizeof(*crb1);
crb1->keyblock_type = TYPE50_CRB1_FMT;
- p = crb1->p + sizeof(crb1->p) - long_len;
+ p = crb1->p + sizeof(crb1->p) - short_len;
q = crb1->q + sizeof(crb1->q) - short_len;
- dp = crb1->dp + sizeof(crb1->dp) - long_len;
+ dp = crb1->dp + sizeof(crb1->dp) - short_len;
dq = crb1->dq + sizeof(crb1->dq) - short_len;
- u = crb1->u + sizeof(crb1->u) - long_len;
+ u = crb1->u + sizeof(crb1->u) - short_len;
inp = crb1->message + sizeof(crb1->message) - mod_len;
- } else if (long_len <= 128) {
+ } else if (mod_len <= 256) { /* up to 2048 bit key size */
struct type50_crb2_msg *crb2 = ap_msg->message;
memset(crb2, 0, sizeof(*crb2));
ap_msg->length = sizeof(*crb2);
crb2->header.msg_type_code = TYPE50_TYPE_CODE;
crb2->header.msg_len = sizeof(*crb2);
crb2->keyblock_type = TYPE50_CRB2_FMT;
- p = crb2->p + sizeof(crb2->p) - long_len;
+ p = crb2->p + sizeof(crb2->p) - short_len;
q = crb2->q + sizeof(crb2->q) - short_len;
- dp = crb2->dp + sizeof(crb2->dp) - long_len;
+ dp = crb2->dp + sizeof(crb2->dp) - short_len;
dq = crb2->dq + sizeof(crb2->dq) - short_len;
- u = crb2->u + sizeof(crb2->u) - long_len;
+ u = crb2->u + sizeof(crb2->u) - short_len;
inp = crb2->message + sizeof(crb2->message) - mod_len;
- } else {
- /* long_len >= 256 */
+ } else if ((mod_len <= 512) && /* up to 4096 bit key size */
+ (zdev->max_mod_size == CEX3A_MAX_MOD_SIZE)) { /* >= CEX3A */
struct type50_crb3_msg *crb3 = ap_msg->message;
memset(crb3, 0, sizeof(*crb3));
ap_msg->length = sizeof(*crb3);
crb3->header.msg_type_code = TYPE50_TYPE_CODE;
crb3->header.msg_len = sizeof(*crb3);
crb3->keyblock_type = TYPE50_CRB3_FMT;
- p = crb3->p + sizeof(crb3->p) - long_len;
+ p = crb3->p + sizeof(crb3->p) - short_len;
q = crb3->q + sizeof(crb3->q) - short_len;
- dp = crb3->dp + sizeof(crb3->dp) - long_len;
+ dp = crb3->dp + sizeof(crb3->dp) - short_len;
dq = crb3->dq + sizeof(crb3->dq) - short_len;
- u = crb3->u + sizeof(crb3->u) - long_len;
+ u = crb3->u + sizeof(crb3->u) - short_len;
inp = crb3->message + sizeof(crb3->message) - mod_len;
- }
+ } else
+ return -EINVAL;
- if (copy_from_user(p, crt->np_prime + long_offset, long_len) ||
+ /*
+ * correct the offset of p, bp and mult_inv according zcrypt.h
+ * block size right aligned (skip the first byte)
+ */
+ if (copy_from_user(p, crt->np_prime + MSGTYPE_ADJUSTMENT, short_len) ||
copy_from_user(q, crt->nq_prime, short_len) ||
- copy_from_user(dp, crt->bp_key + long_offset, long_len) ||
+ copy_from_user(dp, crt->bp_key + MSGTYPE_ADJUSTMENT, short_len) ||
copy_from_user(dq, crt->bq_key, short_len) ||
- copy_from_user(u, crt->u_mult_inv + long_offset, long_len) ||
+ copy_from_user(u, crt->u_mult_inv + MSGTYPE_ADJUSTMENT, short_len) ||
copy_from_user(inp, crt->inputdata, mod_len))
return -EFAULT;
diff --git a/drivers/s390/crypto/zcrypt_msgtype50.h b/drivers/s390/crypto/zcrypt_msgtype50.h
index e56dc72c7733..0a66e4aeeb50 100644
--- a/drivers/s390/crypto/zcrypt_msgtype50.h
+++ b/drivers/s390/crypto/zcrypt_msgtype50.h
@@ -33,6 +33,8 @@
#define MSGTYPE50_CRB2_MAX_MSG_SIZE 0x390 /*sizeof(struct type50_crb2_msg)*/
#define MSGTYPE50_CRB3_MAX_MSG_SIZE 0x710 /*sizeof(struct type50_crb3_msg)*/
+#define MSGTYPE_ADJUSTMENT 0x08 /*type04 extension (not needed in type50)*/
+
int zcrypt_msgtype50_init(void);
void zcrypt_msgtype50_exit(void);