aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/s390
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/block/dasd.c5
-rw-r--r--drivers/s390/block/dasd_devmap.c102
-rw-r--r--drivers/s390/block/dasd_eckd.c51
-rw-r--r--drivers/s390/block/dasd_eckd.h46
-rw-r--r--drivers/s390/block/dasd_int.h12
-rw-r--r--drivers/s390/char/tape_3590.c22
-rw-r--r--drivers/s390/char/tape_std.h1
-rw-r--r--drivers/s390/cio/chsc.c30
-rw-r--r--drivers/s390/cio/qdio.c36
-rw-r--r--drivers/s390/net/qeth_main.c1
-rw-r--r--drivers/s390/s390mach.c34
11 files changed, 270 insertions, 70 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index a3bfebcf31e..cfb1fff3787 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -315,6 +315,11 @@ dasd_increase_state(struct dasd_device *device)
315 rc = dasd_state_basic_to_ready(device); 315 rc = dasd_state_basic_to_ready(device);
316 316
317 if (!rc && 317 if (!rc &&
318 device->state == DASD_STATE_UNFMT &&
319 device->target > DASD_STATE_UNFMT)
320 rc = -EPERM;
321
322 if (!rc &&
318 device->state == DASD_STATE_READY && 323 device->state == DASD_STATE_READY &&
319 device->target >= DASD_STATE_ONLINE) 324 device->target >= DASD_STATE_ONLINE)
320 rc = dasd_state_ready_to_online(device); 325 rc = dasd_state_ready_to_online(device);
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index c1c6f138115..216bc4fba19 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -45,6 +45,7 @@ struct dasd_devmap {
45 unsigned int devindex; 45 unsigned int devindex;
46 unsigned short features; 46 unsigned short features;
47 struct dasd_device *device; 47 struct dasd_device *device;
48 struct dasd_uid uid;
48}; 49};
49 50
50/* 51/*
@@ -716,6 +717,68 @@ dasd_discipline_show(struct device *dev, struct device_attribute *attr, char *bu
716 717
717static DEVICE_ATTR(discipline, 0444, dasd_discipline_show, NULL); 718static DEVICE_ATTR(discipline, 0444, dasd_discipline_show, NULL);
718 719
720static ssize_t
721dasd_alias_show(struct device *dev, struct device_attribute *attr, char *buf)
722{
723 struct dasd_devmap *devmap;
724 int alias;
725
726 devmap = dasd_find_busid(dev->bus_id);
727 spin_lock(&dasd_devmap_lock);
728 if (!IS_ERR(devmap))
729 alias = devmap->uid.alias;
730 else
731 alias = 0;
732 spin_unlock(&dasd_devmap_lock);
733
734 return sprintf(buf, alias ? "1\n" : "0\n");
735}
736
737static DEVICE_ATTR(alias, 0444, dasd_alias_show, NULL);
738
739static ssize_t
740dasd_vendor_show(struct device *dev, struct device_attribute *attr, char *buf)
741{
742 struct dasd_devmap *devmap;
743 char *vendor;
744
745 devmap = dasd_find_busid(dev->bus_id);
746 spin_lock(&dasd_devmap_lock);
747 if (!IS_ERR(devmap) && strlen(devmap->uid.vendor) > 0)
748 vendor = devmap->uid.vendor;
749 else
750 vendor = "";
751 spin_unlock(&dasd_devmap_lock);
752
753 return snprintf(buf, PAGE_SIZE, "%s\n", vendor);
754}
755
756static DEVICE_ATTR(vendor, 0444, dasd_vendor_show, NULL);
757
758#define UID_STRLEN ( /* vendor */ 3 + 1 + /* serial */ 14 + 1 +\
759 /* SSID */ 4 + 1 + /* unit addr */ 2 + 1)
760
761static ssize_t
762dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf)
763{
764 struct dasd_devmap *devmap;
765 char uid[UID_STRLEN];
766
767 devmap = dasd_find_busid(dev->bus_id);
768 spin_lock(&dasd_devmap_lock);
769 if (!IS_ERR(devmap) && strlen(devmap->uid.vendor) > 0)
770 snprintf(uid, sizeof(uid), "%s.%s.%04x.%02x",
771 devmap->uid.vendor, devmap->uid.serial,
772 devmap->uid.ssid, devmap->uid.unit_addr);
773 else
774 uid[0] = 0;
775 spin_unlock(&dasd_devmap_lock);
776
777 return snprintf(buf, PAGE_SIZE, "%s\n", uid);
778}
779
780static DEVICE_ATTR(uid, 0444, dasd_uid_show, NULL);
781
719/* 782/*
720 * extended error-reporting 783 * extended error-reporting
721 */ 784 */
@@ -759,6 +822,9 @@ static DEVICE_ATTR(eer_enabled, 0644, dasd_eer_show, dasd_eer_store);
759static struct attribute * dasd_attrs[] = { 822static struct attribute * dasd_attrs[] = {
760 &dev_attr_readonly.attr, 823 &dev_attr_readonly.attr,
761 &dev_attr_discipline.attr, 824 &dev_attr_discipline.attr,
825 &dev_attr_alias.attr,
826 &dev_attr_vendor.attr,
827 &dev_attr_uid.attr,
762 &dev_attr_use_diag.attr, 828 &dev_attr_use_diag.attr,
763 &dev_attr_eer_enabled.attr, 829 &dev_attr_eer_enabled.attr,
764 NULL, 830 NULL,
@@ -768,6 +834,42 @@ static struct attribute_group dasd_attr_group = {
768 .attrs = dasd_attrs, 834 .attrs = dasd_attrs,
769}; 835};
770 836
837
838/*
839 * Return copy of the device unique identifier.
840 */
841int
842dasd_get_uid(struct ccw_device *cdev, struct dasd_uid *uid)
843{
844 struct dasd_devmap *devmap;
845
846 devmap = dasd_find_busid(cdev->dev.bus_id);
847 if (IS_ERR(devmap))
848 return PTR_ERR(devmap);
849 spin_lock(&dasd_devmap_lock);
850 *uid = devmap->uid;
851 spin_unlock(&dasd_devmap_lock);
852 return 0;
853}
854
855/*
856 * Register the given device unique identifier into devmap struct.
857 */
858int
859dasd_set_uid(struct ccw_device *cdev, struct dasd_uid *uid)
860{
861 struct dasd_devmap *devmap;
862
863 devmap = dasd_find_busid(cdev->dev.bus_id);
864 if (IS_ERR(devmap))
865 return PTR_ERR(devmap);
866 spin_lock(&dasd_devmap_lock);
867 devmap->uid = *uid;
868 spin_unlock(&dasd_devmap_lock);
869 return 0;
870}
871EXPORT_SYMBOL(dasd_set_uid);
872
771/* 873/*
772 * Return value of the specified feature. 874 * Return value of the specified feature.
773 */ 875 */
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index ee09ef33d08..7d5a6cee4bd 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -446,6 +446,39 @@ dasd_eckd_cdl_reclen(int recid)
446 return LABEL_SIZE; 446 return LABEL_SIZE;
447} 447}
448 448
449/*
450 * Generate device unique id that specifies the physical device.
451 */
452static int
453dasd_eckd_generate_uid(struct dasd_device *device, struct dasd_uid *uid)
454{
455 struct dasd_eckd_private *private;
456 struct dasd_eckd_confdata *confdata;
457
458 private = (struct dasd_eckd_private *) device->private;
459 if (!private)
460 return -ENODEV;
461 confdata = &private->conf_data;
462 if (!confdata)
463 return -ENODEV;
464
465 memset(uid, 0, sizeof(struct dasd_uid));
466 strncpy(uid->vendor, confdata->ned1.HDA_manufacturer,
467 sizeof(uid->vendor) - 1);
468 EBCASC(uid->vendor, sizeof(uid->vendor) - 1);
469 strncpy(uid->serial, confdata->ned1.HDA_location,
470 sizeof(uid->serial) - 1);
471 EBCASC(uid->serial, sizeof(uid->serial) - 1);
472 uid->ssid = confdata->neq.subsystemID;
473 if (confdata->ned2.sneq.flags == 0x40) {
474 uid->alias = 1;
475 uid->unit_addr = confdata->ned2.sneq.base_unit_addr;
476 } else
477 uid->unit_addr = confdata->ned1.unit_addr;
478
479 return 0;
480}
481
449static int 482static int
450dasd_eckd_read_conf(struct dasd_device *device) 483dasd_eckd_read_conf(struct dasd_device *device)
451{ 484{
@@ -507,11 +540,15 @@ dasd_eckd_read_conf(struct dasd_device *device)
507 return 0; 540 return 0;
508} 541}
509 542
510 543/*
544 * Check device characteristics.
545 * If the device is accessible using ECKD discipline, the device is enabled.
546 */
511static int 547static int
512dasd_eckd_check_characteristics(struct dasd_device *device) 548dasd_eckd_check_characteristics(struct dasd_device *device)
513{ 549{
514 struct dasd_eckd_private *private; 550 struct dasd_eckd_private *private;
551 struct dasd_uid uid;
515 void *rdc_data; 552 void *rdc_data;
516 int rc; 553 int rc;
517 554
@@ -536,6 +573,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
536 573
537 /* Read Device Characteristics */ 574 /* Read Device Characteristics */
538 rdc_data = (void *) &(private->rdc_data); 575 rdc_data = (void *) &(private->rdc_data);
576 memset(rdc_data, 0, sizeof(rdc_data));
539 rc = read_dev_chars(device->cdev, &rdc_data, 64); 577 rc = read_dev_chars(device->cdev, &rdc_data, 64);
540 if (rc) { 578 if (rc) {
541 DEV_MESSAGE(KERN_WARNING, device, 579 DEV_MESSAGE(KERN_WARNING, device,
@@ -556,8 +594,17 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
556 594
557 /* Read Configuration Data */ 595 /* Read Configuration Data */
558 rc = dasd_eckd_read_conf (device); 596 rc = dasd_eckd_read_conf (device);
559 return rc; 597 if (rc)
598 return rc;
599
600 /* Generate device unique id and register in devmap */
601 rc = dasd_eckd_generate_uid(device, &uid);
602 if (rc)
603 return rc;
560 604
605 rc = dasd_set_uid(device->cdev, &uid);
606
607 return rc;
561} 608}
562 609
563static struct dasd_ccw_req * 610static struct dasd_ccw_req *
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index ad8524bb7bb..d5734e976e1 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -228,26 +228,36 @@ struct dasd_eckd_confdata {
228 unsigned char HDA_manufacturer[3]; 228 unsigned char HDA_manufacturer[3];
229 unsigned char HDA_location[2]; 229 unsigned char HDA_location[2];
230 unsigned char HDA_seqno[12]; 230 unsigned char HDA_seqno[12];
231 __u16 ID; 231 __u8 ID;
232 __u8 unit_addr;
232 } __attribute__ ((packed)) ned1; 233 } __attribute__ ((packed)) ned1;
233 struct { 234 union {
234 struct { 235 struct {
235 unsigned char identifier:2; 236 struct {
236 unsigned char token_id:1; 237 unsigned char identifier:2;
237 unsigned char sno_valid:1; 238 unsigned char token_id:1;
238 unsigned char subst_sno:1; 239 unsigned char sno_valid:1;
239 unsigned char recNED:1; 240 unsigned char subst_sno:1;
240 unsigned char emuNED:1; 241 unsigned char recNED:1;
241 unsigned char reserved:1; 242 unsigned char emuNED:1;
242 } __attribute__ ((packed)) flags; 243 unsigned char reserved:1;
243 __u8 descriptor; 244 } __attribute__ ((packed)) flags;
244 __u8 reserved[2]; 245 __u8 descriptor;
245 unsigned char dev_type[6]; 246 __u8 reserved[2];
246 unsigned char dev_model[3]; 247 unsigned char dev_type[6];
247 unsigned char DASD_manufacturer[3]; 248 unsigned char dev_model[3];
248 unsigned char DASD_location[2]; 249 unsigned char DASD_manufacturer[3];
249 unsigned char DASD_seqno[12]; 250 unsigned char DASD_location[2];
250 __u16 ID; 251 unsigned char DASD_seqno[12];
252 __u16 ID;
253 } __attribute__ ((packed)) ned;
254 struct {
255 unsigned char flags; /* byte 0 */
256 unsigned char res2[7]; /* byte 1- 7 */
257 unsigned char sua_flags; /* byte 8 */
258 __u8 base_unit_addr; /* byte 9 */
259 unsigned char res3[22]; /* byte 10-31 */
260 } __attribute__ ((packed)) sneq;
251 } __attribute__ ((packed)) ned2; 261 } __attribute__ ((packed)) ned2;
252 struct { 262 struct {
253 struct { 263 struct {
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 4293ba82752..d4b13e300a7 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -268,6 +268,16 @@ struct dasd_discipline {
268 268
269extern struct dasd_discipline *dasd_diag_discipline_pointer; 269extern struct dasd_discipline *dasd_diag_discipline_pointer;
270 270
271/*
272 * Unique identifier for dasd device.
273 */
274struct dasd_uid {
275 __u8 alias;
276 char vendor[4];
277 char serial[15];
278 __u16 ssid;
279 __u8 unit_addr;
280};
271 281
272/* 282/*
273 * Notification numbers for extended error reporting notifications: 283 * Notification numbers for extended error reporting notifications:
@@ -516,6 +526,8 @@ void dasd_devmap_exit(void);
516struct dasd_device *dasd_create_device(struct ccw_device *); 526struct dasd_device *dasd_create_device(struct ccw_device *);
517void dasd_delete_device(struct dasd_device *); 527void dasd_delete_device(struct dasd_device *);
518 528
529int dasd_get_uid(struct ccw_device *, struct dasd_uid *);
530int dasd_set_uid(struct ccw_device *, struct dasd_uid *);
519int dasd_get_feature(struct ccw_device *, int); 531int dasd_get_feature(struct ccw_device *, int);
520int dasd_set_feature(struct ccw_device *, int, int); 532int dasd_set_feature(struct ccw_device *, int, int);
521 533
diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c
index c3915f60a3a..d71ef1adea5 100644
--- a/drivers/s390/char/tape_3590.c
+++ b/drivers/s390/char/tape_3590.c
@@ -230,14 +230,16 @@ tape_3590_read_attmsg(struct tape_device *device)
230 * These functions are used to schedule follow-up actions from within an 230 * These functions are used to schedule follow-up actions from within an
231 * interrupt context (like unsolicited interrupts). 231 * interrupt context (like unsolicited interrupts).
232 */ 232 */
233struct work_handler_data {
234 struct tape_device *device;
235 enum tape_op op;
236 struct work_struct work;
237};
238
233static void 239static void
234tape_3590_work_handler(void *data) 240tape_3590_work_handler(void *data)
235{ 241{
236 struct { 242 struct work_handler_data *p = data;
237 struct tape_device *device;
238 enum tape_op op;
239 struct work_struct work;
240 } *p = data;
241 243
242 switch (p->op) { 244 switch (p->op) {
243 case TO_MSEN: 245 case TO_MSEN:
@@ -257,11 +259,7 @@ tape_3590_work_handler(void *data)
257static int 259static int
258tape_3590_schedule_work(struct tape_device *device, enum tape_op op) 260tape_3590_schedule_work(struct tape_device *device, enum tape_op op)
259{ 261{
260 struct { 262 struct work_handler_data *p;
261 struct tape_device *device;
262 enum tape_op op;
263 struct work_struct work;
264 } *p;
265 263
266 if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL) 264 if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL)
267 return -ENOMEM; 265 return -ENOMEM;
@@ -316,7 +314,7 @@ tape_3590_bread(struct tape_device *device, struct request *req)
316 314
317 rq_for_each_bio(bio, req) { 315 rq_for_each_bio(bio, req) {
318 bio_for_each_segment(bv, bio, i) { 316 bio_for_each_segment(bv, bio, i) {
319 dst = kmap(bv->bv_page) + bv->bv_offset; 317 dst = page_address(bv->bv_page) + bv->bv_offset;
320 for (off = 0; off < bv->bv_len; 318 for (off = 0; off < bv->bv_len;
321 off += TAPEBLOCK_HSEC_SIZE) { 319 off += TAPEBLOCK_HSEC_SIZE) {
322 ccw->flags = CCW_FLAG_CC; 320 ccw->flags = CCW_FLAG_CC;
@@ -1168,6 +1166,7 @@ tape_3590_setup_device(struct tape_device *device)
1168static void 1166static void
1169tape_3590_cleanup_device(struct tape_device *device) 1167tape_3590_cleanup_device(struct tape_device *device)
1170{ 1168{
1169 flush_scheduled_work();
1171 tape_std_unassign(device); 1170 tape_std_unassign(device);
1172 1171
1173 kfree(device->discdata); 1172 kfree(device->discdata);
@@ -1234,6 +1233,7 @@ static struct tape_discipline tape_discipline_3590 = {
1234 1233
1235static struct ccw_device_id tape_3590_ids[] = { 1234static struct ccw_device_id tape_3590_ids[] = {
1236 {CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590}, 1235 {CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590},
1236 {CCW_DEVICE_DEVTYPE(0x3592, 0, 0x3592, 0), .driver_info = tape_3592},
1237 { /* end of list */ } 1237 { /* end of list */ }
1238}; 1238};
1239 1239
diff --git a/drivers/s390/char/tape_std.h b/drivers/s390/char/tape_std.h
index 2d311798edf..1fc95235934 100644
--- a/drivers/s390/char/tape_std.h
+++ b/drivers/s390/char/tape_std.h
@@ -153,6 +153,7 @@ enum s390_tape_type {
153 tape_3480, 153 tape_3480,
154 tape_3490, 154 tape_3490,
155 tape_3590, 155 tape_3590,
156 tape_3592,
156}; 157};
157 158
158#endif // _TAPE_STD_H 159#endif // _TAPE_STD_H
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 6412b2c3edd..72187e54dca 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -242,28 +242,10 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
242 if (sch->vpm == mask) 242 if (sch->vpm == mask)
243 goto out_unreg; 243 goto out_unreg;
244 244
245 if ((sch->schib.scsw.actl & (SCSW_ACTL_CLEAR_PEND | 245 if ((sch->schib.scsw.actl & SCSW_ACTL_DEVACT) &&
246 SCSW_ACTL_HALT_PEND | 246 (sch->schib.scsw.actl & SCSW_ACTL_SCHACT) &&
247 SCSW_ACTL_START_PEND | 247 (sch->schib.pmcw.lpum == mask) &&
248 SCSW_ACTL_RESUME_PEND)) && 248 (sch->vpm == 0)) {
249 (sch->schib.pmcw.lpum == mask)) {
250 int cc = cio_cancel(sch);
251
252 if (cc == -ENODEV)
253 goto out_unreg;
254
255 if (cc == -EINVAL) {
256 cc = cio_clear(sch);
257 if (cc == -ENODEV)
258 goto out_unreg;
259 /* Call handler. */
260 if (sch->driver && sch->driver->termination)
261 sch->driver->termination(&sch->dev);
262 goto out_unlock;
263 }
264 } else if ((sch->schib.scsw.actl & SCSW_ACTL_DEVACT) &&
265 (sch->schib.scsw.actl & SCSW_ACTL_SCHACT) &&
266 (sch->schib.pmcw.lpum == mask)) {
267 int cc; 249 int cc;
268 250
269 cc = cio_clear(sch); 251 cc = cio_clear(sch);
@@ -653,13 +635,13 @@ __chp_add(struct subchannel_id schid, void *data)
653 if (sch->schib.pmcw.chpid[i] == chp->id) { 635 if (sch->schib.pmcw.chpid[i] == chp->id) {
654 if (stsch(sch->schid, &sch->schib) != 0) { 636 if (stsch(sch->schid, &sch->schib) != 0) {
655 /* Endgame. */ 637 /* Endgame. */
656 spin_unlock(&sch->lock); 638 spin_unlock_irq(&sch->lock);
657 return -ENXIO; 639 return -ENXIO;
658 } 640 }
659 break; 641 break;
660 } 642 }
661 if (i==8) { 643 if (i==8) {
662 spin_unlock(&sch->lock); 644 spin_unlock_irq(&sch->lock);
663 return 0; 645 return 0;
664 } 646 }
665 sch->lpm = ((sch->schib.pmcw.pim & 647 sch->lpm = ((sch->schib.pmcw.pim &
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 814f9258ce0..96f519281d9 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -38,6 +38,7 @@
38#include <linux/kernel.h> 38#include <linux/kernel.h>
39#include <linux/proc_fs.h> 39#include <linux/proc_fs.h>
40#include <linux/timer.h> 40#include <linux/timer.h>
41#include <linux/mempool.h>
41 42
42#include <asm/ccwdev.h> 43#include <asm/ccwdev.h>
43#include <asm/io.h> 44#include <asm/io.h>
@@ -80,6 +81,8 @@ static int indicator_used[INDICATORS_PER_CACHELINE];
80static __u32 * volatile indicators; 81static __u32 * volatile indicators;
81static __u32 volatile spare_indicator; 82static __u32 volatile spare_indicator;
82static atomic_t spare_indicator_usecount; 83static atomic_t spare_indicator_usecount;
84#define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
85static mempool_t *qdio_mempool_scssc;
83 86
84static debug_info_t *qdio_dbf_setup; 87static debug_info_t *qdio_dbf_setup;
85static debug_info_t *qdio_dbf_sbal; 88static debug_info_t *qdio_dbf_sbal;
@@ -1637,7 +1640,7 @@ next:
1637 1640
1638 } 1641 }
1639 kfree(irq_ptr->qdr); 1642 kfree(irq_ptr->qdr);
1640 kfree(irq_ptr); 1643 free_page((unsigned long) irq_ptr);
1641} 1644}
1642 1645
1643static void 1646static void
@@ -2304,7 +2307,7 @@ qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
2304 2307
2305 QDIO_DBF_TEXT0(0,setup,"getssqd"); 2308 QDIO_DBF_TEXT0(0,setup,"getssqd");
2306 qdioac = 0; 2309 qdioac = 0;
2307 ssqd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); 2310 ssqd_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2308 if (!ssqd_area) { 2311 if (!ssqd_area) {
2309 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \ 2312 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
2310 "SIGAs for sch x%x.\n", irq_ptr->schid.sch_no); 2313 "SIGAs for sch x%x.\n", irq_ptr->schid.sch_no);
@@ -2364,7 +2367,7 @@ qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
2364out: 2367out:
2365 qdio_check_subchannel_qebsm(irq_ptr, qdioac, 2368 qdio_check_subchannel_qebsm(irq_ptr, qdioac,
2366 ssqd_area->sch_token); 2369 ssqd_area->sch_token);
2367 free_page ((unsigned long) ssqd_area); 2370 mempool_free(ssqd_area, qdio_mempool_scssc);
2368 irq_ptr->qdioac = qdioac; 2371 irq_ptr->qdioac = qdioac;
2369} 2372}
2370 2373
@@ -2458,7 +2461,7 @@ tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
2458 virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind); 2461 virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
2459 } 2462 }
2460 2463
2461 scssc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); 2464 scssc_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2462 if (!scssc_area) { 2465 if (!scssc_area) {
2463 QDIO_PRINT_WARN("No memory for setting indicators on " \ 2466 QDIO_PRINT_WARN("No memory for setting indicators on " \
2464 "subchannel 0.%x.%x.\n", 2467 "subchannel 0.%x.%x.\n",
@@ -2514,7 +2517,7 @@ tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
2514 QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long)); 2517 QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
2515 result = 0; 2518 result = 0;
2516out: 2519out:
2517 free_page ((unsigned long) scssc_area); 2520 mempool_free(scssc_area, qdio_mempool_scssc);
2518 return result; 2521 return result;
2519 2522
2520} 2523}
@@ -2543,7 +2546,7 @@ tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
2543 if (!irq_ptr->is_thinint_irq) 2546 if (!irq_ptr->is_thinint_irq)
2544 return -ENODEV; 2547 return -ENODEV;
2545 2548
2546 scsscf_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); 2549 scsscf_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2547 if (!scsscf_area) { 2550 if (!scsscf_area) {
2548 QDIO_PRINT_WARN("No memory for setting delay target on " \ 2551 QDIO_PRINT_WARN("No memory for setting delay target on " \
2549 "subchannel 0.%x.%x.\n", 2552 "subchannel 0.%x.%x.\n",
@@ -2581,7 +2584,7 @@ tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
2581 QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long)); 2584 QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
2582 result = 0; /* not critical */ 2585 result = 0; /* not critical */
2583out: 2586out:
2584 free_page ((unsigned long) scsscf_area); 2587 mempool_free(scsscf_area, qdio_mempool_scssc);
2585 return result; 2588 return result;
2586} 2589}
2587 2590
@@ -2980,7 +2983,7 @@ qdio_allocate(struct qdio_initialize *init_data)
2980 qdio_allocate_do_dbf(init_data); 2983 qdio_allocate_do_dbf(init_data);
2981 2984
2982 /* create irq */ 2985 /* create irq */
2983 irq_ptr = kzalloc(sizeof(struct qdio_irq), GFP_KERNEL | GFP_DMA); 2986 irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
2984 2987
2985 QDIO_DBF_TEXT0(0,setup,"irq_ptr:"); 2988 QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
2986 QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*)); 2989 QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
@@ -2995,7 +2998,7 @@ qdio_allocate(struct qdio_initialize *init_data)
2995 /* QDR must be in DMA area since CCW data address is only 32 bit */ 2998 /* QDR must be in DMA area since CCW data address is only 32 bit */
2996 irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA); 2999 irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
2997 if (!(irq_ptr->qdr)) { 3000 if (!(irq_ptr->qdr)) {
2998 kfree(irq_ptr); 3001 free_page((unsigned long) irq_ptr);
2999 QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n"); 3002 QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
3000 return -ENOMEM; 3003 return -ENOMEM;
3001 } 3004 }
@@ -3780,6 +3783,16 @@ oom:
3780 return -ENOMEM; 3783 return -ENOMEM;
3781} 3784}
3782 3785
3786static void *qdio_mempool_alloc(gfp_t gfp_mask, void *size)
3787{
3788 return (void *) get_zeroed_page(gfp_mask|GFP_DMA);
3789}
3790
3791static void qdio_mempool_free(void *element, void *size)
3792{
3793 free_page((unsigned long) element);
3794}
3795
3783static int __init 3796static int __init
3784init_QDIO(void) 3797init_QDIO(void)
3785{ 3798{
@@ -3809,6 +3822,10 @@ init_QDIO(void)
3809 3822
3810 qdio_add_procfs_entry(); 3823 qdio_add_procfs_entry();
3811 3824
3825 qdio_mempool_scssc = mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS,
3826 qdio_mempool_alloc,
3827 qdio_mempool_free, NULL);
3828
3812 if (tiqdio_check_chsc_availability()) 3829 if (tiqdio_check_chsc_availability())
3813 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n"); 3830 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3814 3831
@@ -3824,6 +3841,7 @@ cleanup_QDIO(void)
3824 qdio_remove_procfs_entry(); 3841 qdio_remove_procfs_entry();
3825 qdio_release_qdio_memory(); 3842 qdio_release_qdio_memory();
3826 qdio_unregister_dbf_views(); 3843 qdio_unregister_dbf_views();
3844 mempool_destroy(qdio_mempool_scssc);
3827 3845
3828 printk("qdio: %s: module removed\n",version); 3846 printk("qdio: %s: module removed\n",version);
3829} 3847}
diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c
index b3c6e790779..cb14642d97a 100644
--- a/drivers/s390/net/qeth_main.c
+++ b/drivers/s390/net/qeth_main.c
@@ -8014,7 +8014,6 @@ static int (*qeth_old_arp_constructor) (struct neighbour *);
8014 8014
8015static struct neigh_ops arp_direct_ops_template = { 8015static struct neigh_ops arp_direct_ops_template = {
8016 .family = AF_INET, 8016 .family = AF_INET,
8017 .destructor = NULL,
8018 .solicit = NULL, 8017 .solicit = NULL,
8019 .error_report = NULL, 8018 .error_report = NULL,
8020 .output = dev_queue_xmit, 8019 .output = dev_queue_xmit,
diff --git a/drivers/s390/s390mach.c b/drivers/s390/s390mach.c
index 3bf46660351..f99e55308b3 100644
--- a/drivers/s390/s390mach.c
+++ b/drivers/s390/s390mach.c
@@ -13,6 +13,7 @@
13#include <linux/sched.h> 13#include <linux/sched.h>
14#include <linux/errno.h> 14#include <linux/errno.h>
15#include <linux/workqueue.h> 15#include <linux/workqueue.h>
16#include <linux/time.h>
16 17
17#include <asm/lowcore.h> 18#include <asm/lowcore.h>
18 19
@@ -362,12 +363,19 @@ s390_revalidate_registers(struct mci *mci)
362 return kill_task; 363 return kill_task;
363} 364}
364 365
366#define MAX_IPD_COUNT 29
367#define MAX_IPD_TIME (5 * 60 * USEC_PER_SEC) /* 5 minutes */
368
365/* 369/*
366 * machine check handler. 370 * machine check handler.
367 */ 371 */
368void 372void
369s390_do_machine_check(struct pt_regs *regs) 373s390_do_machine_check(struct pt_regs *regs)
370{ 374{
375 static DEFINE_SPINLOCK(ipd_lock);
376 static unsigned long long last_ipd;
377 static int ipd_count;
378 unsigned long long tmp;
371 struct mci *mci; 379 struct mci *mci;
372 struct mcck_struct *mcck; 380 struct mcck_struct *mcck;
373 int umode; 381 int umode;
@@ -404,11 +412,27 @@ s390_do_machine_check(struct pt_regs *regs)
404 s390_handle_damage("processing backup machine " 412 s390_handle_damage("processing backup machine "
405 "check with damage."); 413 "check with damage.");
406 } 414 }
407 if (!umode) 415
408 s390_handle_damage("processing backup machine " 416 /*
409 "check in kernel mode."); 417 * Nullifying exigent condition, therefore we might
410 mcck->kill_task = 1; 418 * retry this instruction.
411 mcck->mcck_code = *(unsigned long long *) mci; 419 */
420
421 spin_lock(&ipd_lock);
422
423 tmp = get_clock();
424
425 if (((tmp - last_ipd) >> 12) < MAX_IPD_TIME)
426 ipd_count++;
427 else
428 ipd_count = 1;
429
430 last_ipd = tmp;
431
432 if (ipd_count == MAX_IPD_COUNT)
433 s390_handle_damage("too many ipd retries.");
434
435 spin_unlock(&ipd_lock);
412 } 436 }
413 else { 437 else {
414 /* Processing damage -> stopping machine */ 438 /* Processing damage -> stopping machine */