Merge tag 's390-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Add support for multi-function devices in pci code.

 - Enable PF-VF linking for architectures using the pdev->no_vf_scan
   flag (currently just s390).

 - Add reipl from NVMe support.

 - Get rid of critical section cleanup in entry.S.

 - Refactor PNSO CHSC (perform network subchannel operation) in cio and
   qeth.

 - QDIO interrupts and error handling fixes and improvements, more
   refactoring changes.

 - Align ioremap() with generic code.

 - Accept requests without the prefetch bit set in vfio-ccw.

 - Enable path handling via two new regions in vfio-ccw.

 - Other small fixes and improvements all over the code.

* tag 's390-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (52 commits)
  vfio-ccw: make vfio_ccw_regops variables declarations static
  vfio-ccw: Add trace for CRW event
  vfio-ccw: Wire up the CRW irq and CRW region
  vfio-ccw: Introduce a new CRW region
  vfio-ccw: Refactor IRQ handlers
  vfio-ccw: Introduce a new schib region
  vfio-ccw: Refactor the unregister of the async regions
  vfio-ccw: Register a chp_event callback for vfio-ccw
  vfio-ccw: Introduce new helper functions to free/destroy regions
  vfio-ccw: document possible errors
  vfio-ccw: Enable transparent CCW IPL from DASD
  s390/pci: Log new handle in clp_disable_fh()
  s390/cio, s390/qeth: cleanup PNSO CHSC
  s390/qdio: remove q->first_to_kick
  s390/qdio: fix up qdio_start_irq() kerneldoc
  s390: remove critical section cleanup from entry.S
  s390: add machine check SIGP
  s390/pci: ioremap() align with generic code
  s390/ap: introduce new ap function ap_get_qdev()
  Documentation/s390: Update / remove developerWorks web links
  ...

24 files changed, 870 insertions, 614 deletions

diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c
index 610f0828f22d..8895dbb705eb 100644
--- a/drivers/iommu/s390-iommu.c
+++ b/drivers/iommu/s390-iommu.c
@@ -87,7 +87,7 @@ static int s390_iommu_attach_device(struct iommu_domain *domain,
 				    struct device *dev)
 {
 	struct s390_domain *s390_domain = to_s390_domain(domain);
-	struct zpci_dev *zdev = to_pci_dev(dev)->sysdata;
+	struct zpci_dev *zdev = to_zpci_dev(dev);
 	struct s390_domain_device *domain_device;
 	unsigned long flags;
 	int rc;
@@ -139,7 +139,7 @@ static void s390_iommu_detach_device(struct iommu_domain *domain,
 				     struct device *dev)
 {
 	struct s390_domain *s390_domain = to_s390_domain(domain);
-	struct zpci_dev *zdev = to_pci_dev(dev)->sysdata;
+	struct zpci_dev *zdev = to_zpci_dev(dev);
 	struct s390_domain_device *domain_device, *tmp;
 	unsigned long flags;
 	int found = 0;
@@ -168,14 +168,14 @@ static void s390_iommu_detach_device(struct iommu_domain *domain,
 
 static struct iommu_device *s390_iommu_probe_device(struct device *dev)
 {
-	struct zpci_dev *zdev = to_pci_dev(dev)->sysdata;
+	struct zpci_dev *zdev = to_zpci_dev(dev);
 
 	return &zdev->iommu_dev;
 }
 
 static void s390_iommu_release_device(struct device *dev)
 {
-	struct zpci_dev *zdev = to_pci_dev(dev)->sysdata;
+	struct zpci_dev *zdev = to_zpci_dev(dev);
 	struct iommu_domain *domain;
 
 	/*
diff --git a/drivers/pci/hotplug/s390_pci_hpc.c b/drivers/pci/hotplug/s390_pci_hpc.c
index 39295d88f670..b59f84918fe0 100644
--- a/drivers/pci/hotplug/s390_pci_hpc.c
+++ b/drivers/pci/hotplug/s390_pci_hpc.c
@@ -52,6 +52,7 @@ static int enable_slot(struct hotplug_slot *hotplug_slot)
 {
 	struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev,
 					     hotplug_slot);
+	struct zpci_bus *zbus = zdev->zbus;
 	int rc;
 
 	if (zdev->state != ZPCI_FN_STATE_STANDBY)
@@ -65,9 +66,9 @@ static int enable_slot(struct hotplug_slot *hotplug_slot)
 	if (rc)
 		goto out_deconfigure;
 
-	pci_scan_slot(zdev->bus, ZPCI_DEVFN);
+	pci_scan_slot(zbus->bus, zdev->devfn);
 	pci_lock_rescan_remove();
-	pci_bus_add_devices(zdev->bus);
+	pci_bus_add_devices(zbus->bus);
 	pci_unlock_rescan_remove();
 
 	return rc;
@@ -82,13 +83,17 @@ static int disable_slot(struct hotplug_slot *hotplug_slot)
 	struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev,
 					     hotplug_slot);
 	struct pci_dev *pdev;
+	struct zpci_bus *zbus = zdev->zbus;
 	int rc;
 
 	if (!zpci_fn_configured(zdev->state))
 		return -EIO;
 
-	pdev = pci_get_slot(zdev->bus, ZPCI_DEVFN);
+	pdev = pci_get_slot(zbus->bus, zdev->devfn);
 	if (pdev) {
+		if (pci_num_vf(pdev))
+			return -EBUSY;
+
 		pci_stop_and_remove_bus_device_locked(pdev);
 		pci_dev_put(pdev);
 	}
@@ -133,12 +138,13 @@ static const struct hotplug_slot_ops s390_hotplug_slot_ops = {
 int zpci_init_slot(struct zpci_dev *zdev)
 {
 	char name[SLOT_NAME_SIZE];
+	struct zpci_bus *zbus = zdev->zbus;
 
 	zdev->hotplug_slot.ops = &s390_hotplug_slot_ops;
 
 	snprintf(name, SLOT_NAME_SIZE, "%08x", zdev->fid);
-	return pci_hp_register(&zdev->hotplug_slot, zdev->bus,
-			       ZPCI_DEVFN, name);
+	return pci_hp_register(&zdev->hotplug_slot, zbus->bus,
+			       zdev->devfn, name);
 }
 
 void zpci_exit_slot(struct zpci_dev *zdev)
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index 4d1f392b05f9..b37e08c4f9d1 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -133,12 +133,35 @@ static void pci_read_vf_config_common(struct pci_dev *virtfn)
 			     &physfn->sriov->subsystem_device);
 }
 
+int pci_iov_sysfs_link(struct pci_dev *dev,
+		struct pci_dev *virtfn, int id)
+{
+	char buf[VIRTFN_ID_LEN];
+	int rc;
+
+	sprintf(buf, "virtfn%u", id);
+	rc = sysfs_create_link(&dev->dev.kobj, &virtfn->dev.kobj, buf);
+	if (rc)
+		goto failed;
+	rc = sysfs_create_link(&virtfn->dev.kobj, &dev->dev.kobj, "physfn");
+	if (rc)
+		goto failed1;
+
+	kobject_uevent(&virtfn->dev.kobj, KOBJ_CHANGE);
+
+	return 0;
+
+failed1:
+	sysfs_remove_link(&dev->dev.kobj, buf);
+failed:
+	return rc;
+}
+
 int pci_iov_add_virtfn(struct pci_dev *dev, int id)
 {
 	int i;
 	int rc = -ENOMEM;
 	u64 size;
-	char buf[VIRTFN_ID_LEN];
 	struct pci_dev *virtfn;
 	struct resource *res;
 	struct pci_sriov *iov = dev->sriov;
@@ -182,23 +205,14 @@ int pci_iov_add_virtfn(struct pci_dev *dev, int id)
 	}
 
 	pci_device_add(virtfn, virtfn->bus);
-
-	sprintf(buf, "virtfn%u", id);
-	rc = sysfs_create_link(&dev->dev.kobj, &virtfn->dev.kobj, buf);
+	rc = pci_iov_sysfs_link(dev, virtfn, id);
 	if (rc)
 		goto failed1;
-	rc = sysfs_create_link(&virtfn->dev.kobj, &dev->dev.kobj, "physfn");
-	if (rc)
-		goto failed2;
-
-	kobject_uevent(&virtfn->dev.kobj, KOBJ_CHANGE);
 
 	pci_bus_add_device(virtfn);
 
 	return 0;
 
-failed2:
-	sysfs_remove_link(&dev->dev.kobj, buf);
 failed1:
 	pci_stop_and_remove_bus_device(virtfn);
 	pci_dev_put(dev);
@@ -557,9 +571,6 @@ static void sriov_del_vfs(struct pci_dev *dev)
 	struct pci_sriov *iov = dev->sriov;
 	int i;
 
-	if (dev->no_vf_scan)
-		return;
-
 	for (i = 0; i < iov->num_VFs; i++)
 		pci_iov_remove_virtfn(dev, i);
 }
diff --git a/drivers/s390/cio/Makefile b/drivers/s390/cio/Makefile
index 23eae4188876..a9235f111e79 100644
--- a/drivers/s390/cio/Makefile
+++ b/drivers/s390/cio/Makefile
@@ -21,5 +21,5 @@ qdio-objs := qdio_main.o qdio_thinint.o qdio_debug.o qdio_setup.o
 obj-$(CONFIG_QDIO) += qdio.o
 
 vfio_ccw-objs += vfio_ccw_drv.o vfio_ccw_cp.o vfio_ccw_ops.o vfio_ccw_fsm.o \
-	vfio_ccw_async.o vfio_ccw_trace.o
+	vfio_ccw_async.o vfio_ccw_trace.o vfio_ccw_chp.o
 obj-$(CONFIG_VFIO_CCW) += vfio_ccw.o
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 1ca73c2e5a8f..c314e9495c1b 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -57,6 +57,7 @@ int chsc_error_from_response(int response)
 	case 0x0104:
 		return -EINVAL;
 	case 0x0004:
+	case 0x0106:		/* "Wrong Channel Parm" for the op 0x003d */
 		return -EOPNOTSUPP;
 	case 0x000b:
 	case 0x0107:		/* "Channel busy" for the op 0x003d */
@@ -1336,36 +1337,35 @@ out:
 EXPORT_SYMBOL_GPL(chsc_scm_info);
 
 /**
- * chsc_pnso_brinfo() - Perform Network-Subchannel Operation, Bridge Info.
+ * chsc_pnso() - Perform Network-Subchannel Operation
  * @schid:		id of the subchannel on which PNSO is performed
- * @brinfo_area:	request and response block for the operation
+ * @pnso_area:		request and response block for the operation
  * @resume_token:	resume token for multiblock response
  * @cnc:		Boolean change-notification control
  *
- * brinfo_area must be allocated by the caller with get_zeroed_page(GFP_KERNEL)
+ * pnso_area must be allocated by the caller with get_zeroed_page(GFP_KERNEL)
  *
  * Returns 0 on success.
  */
-int chsc_pnso_brinfo(struct subchannel_id schid,
-		struct chsc_pnso_area *brinfo_area,
-		struct chsc_brinfo_resume_token resume_token,
-		int cnc)
+int chsc_pnso(struct subchannel_id schid,
+	      struct chsc_pnso_area *pnso_area,
+	      struct chsc_pnso_resume_token resume_token,
+	      int cnc)
 {
-	memset(brinfo_area, 0, sizeof(*brinfo_area));
-	brinfo_area->request.length = 0x0030;
-	brinfo_area->request.code = 0x003d; /* network-subchannel operation */
-	brinfo_area->m	   = schid.m;
-	brinfo_area->ssid  = schid.ssid;
-	brinfo_area->sch   = schid.sch_no;
-	brinfo_area->cssid = schid.cssid;
-	brinfo_area->oc    = 0; /* Store-network-bridging-information list */
-	brinfo_area->resume_token = resume_token;
-	brinfo_area->n	   = (cnc != 0);
-	if (chsc(brinfo_area))
+	memset(pnso_area, 0, sizeof(*pnso_area));
+	pnso_area->request.length = 0x0030;
+	pnso_area->request.code = 0x003d; /* network-subchannel operation */
+	pnso_area->m	   = schid.m;
+	pnso_area->ssid  = schid.ssid;
+	pnso_area->sch	 = schid.sch_no;
+	pnso_area->cssid = schid.cssid;
+	pnso_area->oc	 = 0; /* Store-network-bridging-information list */
+	pnso_area->resume_token = resume_token;
+	pnso_area->n	   = (cnc != 0);
+	if (chsc(pnso_area))
 		return -EIO;
-	return chsc_error_from_response(brinfo_area->response.code);
+	return chsc_error_from_response(pnso_area->response.code);
 }
-EXPORT_SYMBOL_GPL(chsc_pnso_brinfo);
 
 int chsc_sgib(u32 origin)
 {
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 34de6d77442c..7ecf7e4c402e 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -205,52 +205,10 @@ struct chsc_scm_info {
 
 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
 
-struct chsc_brinfo_resume_token {
-	u64 t1;
-	u64 t2;
-} __packed;
-
-struct chsc_brinfo_naihdr {
-	struct chsc_brinfo_resume_token resume_token;
-	u32:32;
-	u32 instance;
-	u32:24;
-	u8 naids;
-	u32 reserved[3];
-} __packed;
-
-struct chsc_pnso_area {
-	struct chsc_header request;
-	u8:2;
-	u8 m:1;
-	u8:5;
-	u8:2;
-	u8 ssid:2;
-	u8 fmt:4;
-	u16 sch;
-	u8:8;
-	u8 cssid;
-	u16:16;
-	u8 oc;
-	u32:24;
-	struct chsc_brinfo_resume_token resume_token;
-	u32 n:1;
-	u32:31;
-	u32 reserved[3];
-	struct chsc_header response;
-	u32:32;
-	struct chsc_brinfo_naihdr naihdr;
-	union {
-		struct qdio_brinfo_entry_l3_ipv6 l3_ipv6[0];
-		struct qdio_brinfo_entry_l3_ipv4 l3_ipv4[0];
-		struct qdio_brinfo_entry_l2	 l2[0];
-	} entries;
-} __packed __aligned(PAGE_SIZE);
-
-int chsc_pnso_brinfo(struct subchannel_id schid,
-		struct chsc_pnso_area *brinfo_area,
-		struct chsc_brinfo_resume_token resume_token,
-		int cnc);
+int chsc_pnso(struct subchannel_id schid,
+	      struct chsc_pnso_area *pnso_area,
+	      struct chsc_pnso_resume_token resume_token,
+	      int cnc);
 
 int __init chsc_get_cssid(int idx);
 
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index ccecf6b9504e..963fcc9054c6 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -710,6 +710,29 @@ void ccw_device_get_schid(struct ccw_device *cdev, struct subchannel_id *schid)
 }
 EXPORT_SYMBOL_GPL(ccw_device_get_schid);
 
+/**
+ * ccw_device_pnso() - Perform Network-Subchannel Operation
+ * @cdev:		device on which PNSO is performed
+ * @pnso_area:		request and response block for the operation
+ * @resume_token:	resume token for multiblock response
+ * @cnc:		Boolean change-notification control
+ *
+ * pnso_area must be allocated by the caller with get_zeroed_page(GFP_KERNEL)
+ *
+ * Returns 0 on success.
+ */
+int ccw_device_pnso(struct ccw_device *cdev,
+		    struct chsc_pnso_area *pnso_area,
+		    struct chsc_pnso_resume_token resume_token,
+		    int cnc)
+{
+	struct subchannel_id schid;
+
+	ccw_device_get_schid(cdev, &schid);
+	return chsc_pnso(schid, pnso_area, resume_token, cnc);
+}
+EXPORT_SYMBOL_GPL(ccw_device_pnso);
+
 /*
  * Allocate zeroed dma coherent 31 bit addressable memory using
  * the subchannels dma pool. Maximal size of allocation supported
diff --git a/drivers/s390/cio/idset.c b/drivers/s390/cio/idset.c
index 77d0ea7b381b..45f9c0736be4 100644
--- a/drivers/s390/cio/idset.c
+++ b/drivers/s390/cio/idset.c
@@ -59,18 +59,6 @@ static inline int idset_contains(struct idset *set, int ssid, int id)
 	return test_bit(ssid * set->num_id + id, set->bitmap);
 }
 
-static inline int idset_get_first(struct idset *set, int *ssid, int *id)
-{
-	int bitnum;
-
-	bitnum = find_first_bit(set->bitmap, set->num_ssid * set->num_id);
-	if (bitnum >= set->num_ssid * set->num_id)
-		return 0;
-	*ssid = bitnum / set->num_id;
-	*id = bitnum % set->num_id;
-	return 1;
-}
-
 struct idset *idset_sch_new(void)
 {
 	return idset_new(max_ssid + 1, __MAX_SUBCHANNEL + 1);
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index b8453b594679..eb13c479e11d 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -221,9 +221,6 @@ struct qdio_q {
 	 */
 	int first_to_check;
 
-	/* beginning position for calling the program */
-	int first_to_kick;
-
 	/* number of buffers in use by the adapter */
 	atomic_t nr_buf_used;
 
@@ -292,6 +289,8 @@ struct qdio_irq {
 
 	struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
 	struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];
+	unsigned int max_input_qs;
+	unsigned int max_output_qs;
 
 	void (*irq_poll)(struct ccw_device *cdev, unsigned long data);
 	unsigned long poll_state;
@@ -364,16 +363,13 @@ static inline int multicast_outbound(struct qdio_q *q)
 extern u64 last_ai_time;
 
 /* prototypes for thin interrupt */
-void qdio_setup_thinint(struct qdio_irq *irq_ptr);
 int qdio_establish_thinint(struct qdio_irq *irq_ptr);
 void qdio_shutdown_thinint(struct qdio_irq *irq_ptr);
 void tiqdio_add_device(struct qdio_irq *irq_ptr);
 void tiqdio_remove_device(struct qdio_irq *irq_ptr);
 void tiqdio_inbound_processing(unsigned long q);
-int tiqdio_allocate_memory(void);
-void tiqdio_free_memory(void);
-int tiqdio_register_thinints(void);
-void tiqdio_unregister_thinints(void);
+int qdio_thinint_init(void);
+void qdio_thinint_exit(void);
 int test_nonshared_ind(struct qdio_irq *);
 
 /* prototypes for setup */
@@ -389,8 +385,10 @@ int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr,
 			struct subchannel_id *schid,
 			struct qdio_ssqd_desc *data);
 int qdio_setup_irq(struct qdio_irq *irq_ptr, struct qdio_initialize *init_data);
+void qdio_shutdown_irq(struct qdio_irq *irq);
 void qdio_print_subchannel_info(struct qdio_irq *irq_ptr);
-void qdio_release_memory(struct qdio_irq *irq_ptr);
+void qdio_free_queues(struct qdio_irq *irq_ptr);
+void qdio_free_async_data(struct qdio_irq *irq_ptr);
 int qdio_setup_init(void);
 void qdio_setup_exit(void);
 int qdio_enable_async_operation(struct qdio_output_q *q);
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index bcc3ab14e72d..610c05f59589 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -143,7 +143,7 @@ again:
 		DBF_ERROR("%4x EQBS ERROR", SCH_NO(q));
 		DBF_ERROR("%3d%3d%2d", count, tmp_count, nr);
 		q->handler(q->irq_ptr->cdev, QDIO_ERROR_GET_BUF_STATE, q->nr,
-			   q->first_to_kick, count, q->irq_ptr->int_parm);
+			   q->first_to_check, count, q->irq_ptr->int_parm);
 		return 0;
 	}
 }
@@ -191,7 +191,7 @@ again:
 		DBF_ERROR("%4x SQBS ERROR", SCH_NO(q));
 		DBF_ERROR("%3d%3d%2d", count, tmp_count, nr);
 		q->handler(q->irq_ptr->cdev, QDIO_ERROR_SET_BUF_STATE, q->nr,
-			   q->first_to_kick, count, q->irq_ptr->int_parm);
+			   q->first_to_check, count, q->irq_ptr->int_parm);
 		return 0;
 	}
 }
@@ -438,15 +438,12 @@ static void process_buffer_error(struct qdio_q *q, unsigned int start,
 		  q->sbal[start]->element[15].sflags);
 }
 
-static inline void inbound_primed(struct qdio_q *q, unsigned int start,
-				  int count)
+static inline void inbound_handle_work(struct qdio_q *q, unsigned int start,
+				       int count, bool auto_ack)
 {
 	int new;
 
-	DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in prim:%1d %02x", q->nr, count);
-
-	/* for QEBSM the ACK was already set by EQBS */
-	if (is_qebsm(q)) {
+	if (auto_ack) {
 		if (!q->u.in.ack_count) {
 			q->u.in.ack_count = count;
 			q->u.in.ack_start = start;
@@ -466,15 +463,14 @@ static inline void inbound_primed(struct qdio_q *q, unsigned int start,
 	 * or by the next inbound run.
 	 */
 	new = add_buf(start, count - 1);
-	if (q->u.in.ack_count) {
-		/* reset the previous ACK but first set the new one */
-		set_buf_state(q, new, SLSB_P_INPUT_ACK);
-		set_buf_state(q, q->u.in.ack_start, SLSB_P_INPUT_NOT_INIT);
-	} else {
-		q->u.in.ack_count = 1;
-		set_buf_state(q, new, SLSB_P_INPUT_ACK);
-	}
+	set_buf_state(q, new, SLSB_P_INPUT_ACK);
+
+	/* delete the previous ACKs */
+	if (q->u.in.ack_count)
+		set_buf_states(q, q->u.in.ack_start, SLSB_P_INPUT_NOT_INIT,
+			       q->u.in.ack_count);
 
+	q->u.in.ack_count = 1;
 	q->u.in.ack_start = new;
 	count--;
 	if (!count)
@@ -508,19 +504,21 @@ static int get_inbound_buffer_frontier(struct qdio_q *q, unsigned int start)
 
 	switch (state) {
 	case SLSB_P_INPUT_PRIMED:
-		inbound_primed(q, start, count);
+		DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in prim:%1d %02x", q->nr,
+			      count);
+
+		inbound_handle_work(q, start, count, is_qebsm(q));
 		if (atomic_sub_return(count, &q->nr_buf_used) == 0)
 			qperf_inc(q, inbound_queue_full);
 		if (q->irq_ptr->perf_stat_enabled)
 			account_sbals(q, count);
 		return count;
 	case SLSB_P_INPUT_ERROR:
+		DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in err:%1d %02x", q->nr,
+			      count);
+
 		process_buffer_error(q, start, count);
-		/*
-		 * Interrupts may be avoided as long as the error is present
-		 * so change the buffer state immediately to avoid starvation.
-		 */
-		set_buf_states(q, start, SLSB_P_INPUT_NOT_INIT, count);
+		inbound_handle_work(q, start, count, false);
 		if (atomic_sub_return(count, &q->nr_buf_used) == 0)
 			qperf_inc(q, inbound_queue_full);
 		if (q->irq_ptr->perf_stat_enabled)
@@ -624,10 +622,9 @@ static inline unsigned long qdio_aob_for_buffer(struct qdio_output_q *q,
 	return phys_aob;
 }
 
-static void qdio_kick_handler(struct qdio_q *q, unsigned int count)
+static void qdio_kick_handler(struct qdio_q *q, unsigned int start,
+			      unsigned int count)
 {
-	int start = q->first_to_kick;
-
 	if (unlikely(q->irq_ptr->state != QDIO_IRQ_STATE_ACTIVE))
 		return;
 
@@ -644,7 +641,6 @@ static void qdio_kick_handler(struct qdio_q *q, unsigned int count)
 		   q->irq_ptr->int_parm);
 
 	/* for the next time */
-	q->first_to_kick = add_buf(start, count);
 	q->qdio_error = 0;
 }
 
@@ -668,9 +664,9 @@ static void __qdio_inbound_processing(struct qdio_q *q)
 	if (count == 0)
 		return;
 
+	qdio_kick_handler(q, start, count);
 	start = add_buf(start, count);
 	q->first_to_check = start;
-	qdio_kick_handler(q, count);
 
 	if (!qdio_inbound_q_done(q, start)) {
 		/* means poll time is not yet over */
@@ -826,7 +822,7 @@ static void __qdio_outbound_processing(struct qdio_q *q)
 	count = qdio_outbound_q_moved(q, start);
 	if (count) {
 		q->first_to_check = add_buf(start, count);
-		qdio_kick_handler(q, count);
+		qdio_kick_handler(q, start, count);
 	}
 
 	if (queue_type(q) == QDIO_ZFCP_QFMT && !pci_out_supported(q->irq_ptr) &&
@@ -880,47 +876,17 @@ static inline void qdio_check_outbound_pci_queues(struct qdio_irq *irq)
 			qdio_tasklet_schedule(out);
 }
 
-static void __tiqdio_inbound_processing(struct qdio_q *q)
+void tiqdio_inbound_processing(unsigned long data)
 {
-	unsigned int start = q->first_to_check;
-	int count;
+	struct qdio_q *q = (struct qdio_q *)data;
 
-	qperf_inc(q, tasklet_inbound);
 	if (need_siga_sync(q) && need_siga_sync_after_ai(q))
 		qdio_sync_queues(q);
 
 	/* The interrupt could be caused by a PCI request: */
 	qdio_check_outbound_pci_queues(q->irq_ptr);
 
-	count = qdio_inbound_q_moved(q, start);
-	if (count == 0)
-		return;
-
-	start = add_buf(start, count);
-	q->first_to_check = start;
-	qdio_kick_handler(q, count);
-
-	if (!qdio_inbound_q_done(q, start)) {
-		qperf_inc(q, tasklet_inbound_resched);
-		if (!qdio_tasklet_schedule(q))
-			return;
-	}
-
-	qdio_stop_polling(q);
-	/*
-	 * We need to check again to not lose initiative after
-	 * resetting the ACK state.
-	 */
-	if (!qdio_inbound_q_done(q, start)) {
-		qperf_inc(q, tasklet_inbound_resched2);
-		qdio_tasklet_schedule(q);
-	}
-}
-
-void tiqdio_inbound_processing(unsigned long data)
-{
-	struct qdio_q *q = (struct qdio_q *)data;
-	__tiqdio_inbound_processing(q);
+	__qdio_inbound_processing(q);
 }
 
 static inline void qdio_set_state(struct qdio_irq *irq_ptr,
@@ -977,7 +943,6 @@ static void qdio_handle_activate_check(struct ccw_device *cdev,
 {
 	struct qdio_irq *irq_ptr = cdev->private->qdio_data;
 	struct qdio_q *q;
-	int count;
 
 	DBF_ERROR("%4x ACT CHECK", irq_ptr->schid.sch_no);
 	DBF_ERROR("intp :%lx", intparm);
@@ -992,9 +957,8 @@ static void qdio_handle_activate_check(struct ccw_device *cdev,
 		goto no_handler;
 	}
 
-	count = sub_buf(q->first_to_check, q->first_to_kick);
 	q->handler(q->irq_ptr->cdev, QDIO_ERROR_ACTIVATE,
-		   q->nr, q->first_to_kick, count, irq_ptr->int_parm);
+		   q->nr, q->first_to_check, 0, irq_ptr->int_parm);
 no_handler:
 	qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
 	/*
@@ -1154,35 +1118,27 @@ int qdio_shutdown(struct ccw_device *cdev, int how)
 
 	/* cleanup subchannel */
 	spin_lock_irq(get_ccwdev_lock(cdev));
-
+	qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
 	if (how & QDIO_FLAG_CLEANUP_USING_CLEAR)
 		rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
 	else
 		/* default behaviour is halt */
 		rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
+	spin_unlock_irq(get_ccwdev_lock(cdev));
 	if (rc) {
 		DBF_ERROR("%4x SHUTD ERR", irq_ptr->schid.sch_no);
 		DBF_ERROR("rc:%4d", rc);
 		goto no_cleanup;
 	}
 
-	qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
-	spin_unlock_irq(get_ccwdev_lock(cdev));
 	wait_event_interruptible_timeout(cdev->private->wait_q,
 		irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
 		irq_ptr->state == QDIO_IRQ_STATE_ERR,
 		10 * HZ);
-	spin_lock_irq(get_ccwdev_lock(cdev));
 
 no_cleanup:
 	qdio_shutdown_thinint(irq_ptr);
-
-	/* restore interrupt handler */
-	if ((void *)cdev->handler == (void *)qdio_int_handler) {
-		cdev->handler = irq_ptr->orig_handler;
-		cdev->private->intparm = 0;
-	}
-	spin_unlock_irq(get_ccwdev_lock(cdev));
+	qdio_shutdown_irq(irq_ptr);
 
 	qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
 	mutex_unlock(&irq_ptr->setup_mutex);
@@ -1213,7 +1169,11 @@ int qdio_free(struct ccw_device *cdev)
 	cdev->private->qdio_data = NULL;
 	mutex_unlock(&irq_ptr->setup_mutex);
 
-	qdio_release_memory(irq_ptr);
+	qdio_free_async_data(irq_ptr);
+	qdio_free_queues(irq_ptr);
+	free_page((unsigned long) irq_ptr->qdr);
+	free_page(irq_ptr->chsc_page);
+	free_page((unsigned long) irq_ptr);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(qdio_free);
@@ -1229,6 +1189,7 @@ int qdio_allocate(struct ccw_device *cdev, unsigned int no_input_qs,
 {
 	struct subchannel_id schid;
 	struct qdio_irq *irq_ptr;
+	int rc = -ENOMEM;
 
 	ccw_device_get_schid(cdev, &schid);
 	DBF_EVENT("qallocate:%4x", schid.sch_no);
@@ -1240,12 +1201,12 @@ int qdio_allocate(struct ccw_device *cdev, unsigned int no_input_qs,
 	/* irq_ptr must be in GFP_DMA since it contains ccw1.cda */
 	irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
 	if (!irq_ptr)
-		goto out_err;
+		return -ENOMEM;
 
 	irq_ptr->cdev = cdev;
 	mutex_init(&irq_ptr->setup_mutex);
 	if (qdio_allocate_dbf(irq_ptr))
-		goto out_rel;
+		goto err_dbf;
 
 	DBF_DEV_EVENT(DBF_ERR, irq_ptr, "alloc niq:%1u noq:%1u", no_input_qs,
 		      no_output_qs);
@@ -1258,24 +1219,30 @@ int qdio_allocate(struct ccw_device *cdev, unsigned int no_input_qs,
 	 */
 	irq_ptr->chsc_page = get_zeroed_page(GFP_KERNEL);
 	if (!irq_ptr->chsc_page)
-		goto out_rel;
+		goto err_chsc;
 
 	/* qdr is used in ccw1.cda which is u32 */
 	irq_ptr->qdr = (struct qdr *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
 	if (!irq_ptr->qdr)
-		goto out_rel;
+		goto err_qdr;
 
-	if (qdio_allocate_qs(irq_ptr, no_input_qs, no_output_qs))
-		goto out_rel;
+	rc = qdio_allocate_qs(irq_ptr, no_input_qs, no_output_qs);
+	if (rc)
+		goto err_queues;
 
 	INIT_LIST_HEAD(&irq_ptr->entry);
 	cdev->private->qdio_data = irq_ptr;
 	qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
 	return 0;
-out_rel:
-	qdio_release_memory(irq_ptr);
-out_err:
-	return -ENOMEM;
+
+err_queues:
+	free_page((unsigned long) irq_ptr->qdr);
+err_qdr:
+	free_page(irq_ptr->chsc_page);
+err_chsc:
+err_dbf:
+	free_page((unsigned long) irq_ptr);
+	return rc;
 }
 EXPORT_SYMBOL_GPL(qdio_allocate);
 
@@ -1338,6 +1305,10 @@ int qdio_establish(struct ccw_device *cdev,
 	if (!irq_ptr)
 		return -ENODEV;
 
+	if (init_data->no_input_qs > irq_ptr->max_input_qs ||
+	    init_data->no_output_qs > irq_ptr->max_output_qs)
+		return -EINVAL;
+
 	if ((init_data->no_input_qs && !init_data->input_handler) ||
 	    (init_data->no_output_qs && !init_data->output_handler))
 		return -EINVAL;
@@ -1352,8 +1323,8 @@ int qdio_establish(struct ccw_device *cdev,
 
 	rc = qdio_establish_thinint(irq_ptr);
 	if (rc) {
+		qdio_shutdown_irq(irq_ptr);
 		mutex_unlock(&irq_ptr->setup_mutex);
-		qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
 		return rc;
 	}
 
@@ -1371,8 +1342,9 @@ int qdio_establish(struct ccw_device *cdev,
 	if (rc) {
 		DBF_ERROR("%4x est IO ERR", irq_ptr->schid.sch_no);
 		DBF_ERROR("rc:%4x", rc);
+		qdio_shutdown_thinint(irq_ptr);
+		qdio_shutdown_irq(irq_ptr);
 		mutex_unlock(&irq_ptr->setup_mutex);
-		qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
 		return rc;
 	}
 
@@ -1460,25 +1432,6 @@ out:
 }
 EXPORT_SYMBOL_GPL(qdio_activate);
 
-static inline int buf_in_between(int bufnr, int start, int count)
-{
-	int end = add_buf(start, count);
-
-	if (end > start) {
-		if (bufnr >= start && bufnr < end)
-			return 1;
-		else
-			return 0;
-	}
-
-	/* wrap-around case */
-	if ((bufnr >= start && bufnr <= QDIO_MAX_BUFFERS_PER_Q) ||
-	    (bufnr < end))
-		return 1;
-	else
-		return 0;
-}
-
 /**
  * handle_inbound - reset processed input buffers
  * @q: queue containing the buffers
@@ -1489,36 +1442,18 @@ static inline int buf_in_between(int bufnr, int start, int count)
 static int handle_inbound(struct qdio_q *q, unsigned int callflags,
 			  int bufnr, int count)
 {
-	int diff;
+	int overlap;
 
 	qperf_inc(q, inbound_call);
 
-	if (!q->u.in.ack_count)
-		goto set;
-
-	/* protect against stop polling setting an ACK for an emptied slsb */
-	if (count == QDIO_MAX_BUFFERS_PER_Q) {
-		/* overwriting everything, just delete polling status */
-		q->u.in.ack_count = 0;
-		goto set;
-	} else if (buf_in_between(q->u.in.ack_start, bufnr, count)) {
-		if (is_qebsm(q)) {
-			/* partial overwrite, just update ack_start */
-			diff = add_buf(bufnr, count);
-			diff = sub_buf(diff, q->u.in.ack_start);
-			q->u.in.ack_count -= diff;
-			if (q->u.in.ack_count <= 0) {
-				q->u.in.ack_count = 0;
-				goto set;
-			}
-			q->u.in.ack_start = add_buf(q->u.in.ack_start, diff);
-		} else {
-			/* the only ACK will be deleted */
-			q->u.in.ack_count = 0;
-		}
+	/* If any ACKed SBALs are returned to HW, adjust ACK tracking: */
+	overlap = min(count - sub_buf(q->u.in.ack_start, bufnr),
+		      q->u.in.ack_count);
+	if (overlap > 0) {
+		q->u.in.ack_start = add_buf(q->u.in.ack_start, overlap);
+		q->u.in.ack_count -= overlap;
 	}
 
-set:
 	count = set_buf_states(q, bufnr, SLSB_CU_INPUT_EMPTY, count);
 	atomic_add(count, &q->nr_buf_used);
 
@@ -1627,7 +1562,7 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
 EXPORT_SYMBOL_GPL(do_QDIO);
 
 /**
- * qdio_start_irq - process input buffers
+ * qdio_start_irq - enable interrupt processing for the device
  * @cdev: associated ccw_device for the qdio subchannel
  *
  * Return codes
@@ -1770,94 +1705,6 @@ int qdio_stop_irq(struct ccw_device *cdev)
 }
 EXPORT_SYMBOL(qdio_stop_irq);
 
-/**
- * qdio_pnso_brinfo() - perform network subchannel op #0 - bridge info.
- * @schid:		Subchannel ID.
- * @cnc:		Boolean Change-Notification Control
- * @response:		Response code will be stored at this address
- * @cb: 		Callback function will be executed for each element
- *			of the address list
- * @priv:		Pointer to pass to the callback function.
- *
- * Performs "Store-network-bridging-information list" operation and calls
- * the callback function for every entry in the list. If "change-
- * notification-control" is set, further changes in the address list
- * will be reported via the IPA command.
- */
-int qdio_pnso_brinfo(struct subchannel_id schid,
-		int cnc, u16 *response,
-		void (*cb)(void *priv, enum qdio_brinfo_entry_type type,
-				void *entry),
-		void *priv)
-{
-	struct chsc_pnso_area *rr;
-	int rc;
-	u32 prev_instance = 0;
-	int isfirstblock = 1;
-	int i, size, elems;
-
-	rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL);
-	if (rr == NULL)
-		return -ENOMEM;
-	do {
-		/* on the first iteration, naihdr.resume_token will be zero */
-		rc = chsc_pnso_brinfo(schid, rr, rr->naihdr.resume_token, cnc);
-		if (rc != 0 && rc != -EBUSY)
-			goto out;
-		if (rr->response.code != 1) {
-			rc = -EIO;
-			continue;
-		} else
-			rc = 0;
-
-		if (cb == NULL)
-			continue;
-
-		size = rr->naihdr.naids;
-		elems = (rr->response.length -
-				sizeof(struct chsc_header) -
-				sizeof(struct chsc_brinfo_naihdr)) /
-				size;
-
-		if (!isfirstblock && (rr->naihdr.instance != prev_instance)) {
-			/* Inform the caller that they need to scrap */
-			/* the data that was already reported via cb */
-				rc = -EAGAIN;
-				break;
-		}
-		isfirstblock = 0;
-		prev_instance = rr->naihdr.instance;
-		for (i = 0; i < elems; i++)
-			switch (size) {
-			case sizeof(struct qdio_brinfo_entry_l3_ipv6):
-				(*cb)(priv, l3_ipv6_addr,
-						&rr->entries.l3_ipv6[i]);
-				break;
-			case sizeof(struct qdio_brinfo_entry_l3_ipv4):
-				(*cb)(priv, l3_ipv4_addr,
-						&rr->entries.l3_ipv4[i]);
-				break;
-			case sizeof(struct qdio_brinfo_entry_l2):
-				(*cb)(priv, l2_addr_lnid,
-						&rr->entries.l2[i]);
-				break;
-			default:
-				WARN_ON_ONCE(1);
-				rc = -EIO;
-				goto out;
-			}
-	} while (rr->response.code == 0x0107 ||  /* channel busy */
-		  (rr->response.code == 1 && /* list stored */
-		   /* resume token is non-zero => list incomplete */
-		   (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2)));
-	(*response) = rr->response.code;
-
-out:
-	free_page((unsigned long)rr);
-	return rc;
-}
-EXPORT_SYMBOL_GPL(qdio_pnso_brinfo);
-
 static int __init init_QDIO(void)
 {
 	int rc;
@@ -1868,16 +1715,11 @@ static int __init init_QDIO(void)
 	rc = qdio_setup_init();
 	if (rc)
 		goto out_debug;
-	rc = tiqdio_allocate_memory();
+	rc = qdio_thinint_init();
 	if (rc)
 		goto out_cache;
-	rc = tiqdio_register_thinints();
-	if (rc)
-		goto out_ti;
 	return 0;
 
-out_ti:
-	tiqdio_free_memory();
 out_cache:
 	qdio_setup_exit();
 out_debug:
@@ -1887,8 +1729,7 @@ out_debug:
 
 static void __exit exit_QDIO(void)
 {
-	tiqdio_unregister_thinints();
-	tiqdio_free_memory();
+	qdio_thinint_exit();
 	qdio_setup_exit();
 	qdio_debug_exit();
 }
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 3083edd61f0c..2c5cc6ec668e 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -135,6 +135,27 @@ output:
 	}
 }
 
+static void __qdio_free_queues(struct qdio_q **queues, unsigned int count)
+{
+	struct qdio_q *q;
+	unsigned int i;
+
+	for (i = 0; i < count; i++) {
+		q = queues[i];
+		free_page((unsigned long) q->slib);
+		kmem_cache_free(qdio_q_cache, q);
+	}
+}
+
+void qdio_free_queues(struct qdio_irq *irq_ptr)
+{
+	__qdio_free_queues(irq_ptr->input_qs, irq_ptr->max_input_qs);
+	irq_ptr->max_input_qs = 0;
+
+	__qdio_free_queues(irq_ptr->output_qs, irq_ptr->max_output_qs);
+	irq_ptr->max_output_qs = 0;
+}
+
 static int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues)
 {
 	struct qdio_q *q;
@@ -142,12 +163,15 @@ static int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues)
 
 	for (i = 0; i < nr_queues; i++) {
 		q = kmem_cache_zalloc(qdio_q_cache, GFP_KERNEL);
-		if (!q)
+		if (!q) {
+			__qdio_free_queues(irq_ptr_qs, i);
 			return -ENOMEM;
+		}
 
 		q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
 		if (!q->slib) {
 			kmem_cache_free(qdio_q_cache, q);
+			__qdio_free_queues(irq_ptr_qs, i);
 			return -ENOMEM;
 		}
 		irq_ptr_qs[i] = q;
@@ -162,8 +186,16 @@ int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs
 	rc = __qdio_allocate_qs(irq_ptr->input_qs, nr_input_qs);
 	if (rc)
 		return rc;
+
 	rc = __qdio_allocate_qs(irq_ptr->output_qs, nr_output_qs);
-	return rc;
+	if (rc) {
+		__qdio_free_queues(irq_ptr->input_qs, nr_input_qs);
+		return rc;
+	}
+
+	irq_ptr->max_input_qs = nr_input_qs;
+	irq_ptr->max_output_qs = nr_output_qs;
+	return 0;
 }
 
 static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr,
@@ -347,45 +379,28 @@ void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr)
 	DBF_EVENT("3:%4x qib:%4x", irq_ptr->ssqd_desc.qdioac3, irq_ptr->qib.ac);
 }
 
-void qdio_release_memory(struct qdio_irq *irq_ptr)
+void qdio_free_async_data(struct qdio_irq *irq_ptr)
 {
 	struct qdio_q *q;
 	int i;
 
-	/*
-	 * Must check queue array manually since irq_ptr->nr_input_queues /
-	 * irq_ptr->nr_input_queues may not yet be set.
-	 */
-	for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
-		q = irq_ptr->input_qs[i];
-		if (q) {
-			free_page((unsigned long) q->slib);
-			kmem_cache_free(qdio_q_cache, q);
-		}
-	}
-	for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
+	for (i = 0; i < irq_ptr->max_output_qs; i++) {
 		q = irq_ptr->output_qs[i];
-		if (q) {
-			if (q->u.out.use_cq) {
-				int n;
-
-				for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; ++n) {
-					struct qaob *aob = q->u.out.aobs[n];
-					if (aob) {
-						qdio_release_aob(aob);
-						q->u.out.aobs[n] = NULL;
-					}
-				}
+		if (q->u.out.use_cq) {
+			unsigned int n;
+
+			for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; n++) {
+				struct qaob *aob = q->u.out.aobs[n];
 
-				qdio_disable_async_operation(&q->u.out);
+				if (aob) {
+					qdio_release_aob(aob);
+					q->u.out.aobs[n] = NULL;
+				}
 			}
-			free_page((unsigned long) q->slib);
-			kmem_cache_free(qdio_q_cache, q);
+
+			qdio_disable_async_operation(&q->u.out);
 		}
 	}
-	free_page((unsigned long) irq_ptr->qdr);
-	free_page(irq_ptr->chsc_page);
-	free_page((unsigned long) irq_ptr);
 }
 
 static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr,
@@ -480,7 +495,6 @@ int qdio_setup_irq(struct qdio_irq *irq_ptr, struct qdio_initialize *init_data)
 	}
 
 	setup_qib(irq_ptr, init_data);
-	qdio_setup_thinint(irq_ptr);
 	set_impl_params(irq_ptr, init_data->qib_param_field_format,
 			init_data->qib_param_field,
 			init_data->input_slib_elements,
@@ -491,6 +505,12 @@ int qdio_setup_irq(struct qdio_irq *irq_ptr, struct qdio_initialize *init_data)
 
 	/* qdr, qib, sls, slsbs, slibs, sbales are filled now */
 
+	/* set our IRQ handler */
+	spin_lock_irq(get_ccwdev_lock(cdev));
+	irq_ptr->orig_handler = cdev->handler;
+	cdev->handler = qdio_int_handler;
+	spin_unlock_irq(get_ccwdev_lock(cdev));
+
 	/* get qdio commands */
 	ciw = ccw_device_get_ciw(cdev, CIW_TYPE_EQUEUE);
 	if (!ciw) {
@@ -506,12 +526,18 @@ int qdio_setup_irq(struct qdio_irq *irq_ptr, struct qdio_initialize *init_data)
 	}
 	irq_ptr->aqueue = *ciw;
 
-	/* set new interrupt handler */
+	return 0;
+}
+
+void qdio_shutdown_irq(struct qdio_irq *irq)
+{
+	struct ccw_device *cdev = irq->cdev;
+
+	/* restore IRQ handler */
 	spin_lock_irq(get_ccwdev_lock(cdev));
-	irq_ptr->orig_handler = cdev->handler;
-	cdev->handler = qdio_int_handler;
+	cdev->handler = irq->orig_handler;
+	cdev->private->intparm = 0;
 	spin_unlock_irq(get_ccwdev_lock(cdev));
-	return 0;
 }
 
 void qdio_print_subchannel_info(struct qdio_irq *irq_ptr)
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index ae50373617cd..7a440e4328cd 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -197,47 +197,21 @@ out:
 	return rc;
 }
 
-/* allocate non-shared indicators and shared indicator */
-int __init tiqdio_allocate_memory(void)
-{
-	q_indicators = kcalloc(TIQDIO_NR_INDICATORS,
-			       sizeof(struct indicator_t),
-			       GFP_KERNEL);
-	if (!q_indicators)
-		return -ENOMEM;
-	return 0;
-}
-
-void tiqdio_free_memory(void)
-{
-	kfree(q_indicators);
-}
-
-int __init tiqdio_register_thinints(void)
+int qdio_establish_thinint(struct qdio_irq *irq_ptr)
 {
 	int rc;
 
-	rc = register_adapter_interrupt(&tiqdio_airq);
-	if (rc) {
-		DBF_EVENT("RTI:%x", rc);
-		return rc;
-	}
-	return 0;
-}
-
-int qdio_establish_thinint(struct qdio_irq *irq_ptr)
-{
 	if (!is_thinint_irq(irq_ptr))
 		return 0;
-	return set_subchannel_ind(irq_ptr, 0);
-}
 
-void qdio_setup_thinint(struct qdio_irq *irq_ptr)
-{
-	if (!is_thinint_irq(irq_ptr))
-		return;
 	irq_ptr->dsci = get_indicator();
 	DBF_HEX(&irq_ptr->dsci, sizeof(void *));
+
+	rc = set_subchannel_ind(irq_ptr, 0);
+	if (rc)
+		put_indicator(irq_ptr->dsci);
+
+	return rc;
 }
 
 void qdio_shutdown_thinint(struct qdio_irq *irq_ptr)
@@ -250,8 +224,27 @@ void qdio_shutdown_thinint(struct qdio_irq *irq_ptr)
 	put_indicator(irq_ptr->dsci);
 }
 
-void __exit tiqdio_unregister_thinints(void)
+int __init qdio_thinint_init(void)
+{
+	int rc;
+
+	q_indicators = kcalloc(TIQDIO_NR_INDICATORS, sizeof(struct indicator_t),
+			       GFP_KERNEL);
+	if (!q_indicators)
+		return -ENOMEM;
+
+	rc = register_adapter_interrupt(&tiqdio_airq);
+	if (rc) {
+		DBF_EVENT("RTI:%x", rc);
+		kfree(q_indicators);
+		return rc;
+	}
+	return 0;
+}
+
+void __exit qdio_thinint_exit(void)
 {
 	WARN_ON(!list_empty(&tiq_list));
 	unregister_adapter_interrupt(&tiqdio_airq);
+	kfree(q_indicators);
 }
diff --git a/drivers/s390/cio/vfio_ccw_chp.c b/drivers/s390/cio/vfio_ccw_chp.c
new file mode 100644
index 000000000000..a646fc81c872
--- /dev/null
+++ b/drivers/s390/cio/vfio_ccw_chp.c
@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Channel path related status regions for vfio_ccw
+ *
+ * Copyright IBM Corp. 2020
+ *
+ * Author(s): Farhan Ali <alifm@linux.ibm.com>
+ *            Eric Farman <farman@linux.ibm.com>
+ */
+
+#include <linux/vfio.h>
+#include "vfio_ccw_private.h"
+
+static ssize_t vfio_ccw_schib_region_read(struct vfio_ccw_private *private,
+					  char __user *buf, size_t count,
+					  loff_t *ppos)
+{
+	unsigned int i = VFIO_CCW_OFFSET_TO_INDEX(*ppos) - VFIO_CCW_NUM_REGIONS;
+	loff_t pos = *ppos & VFIO_CCW_OFFSET_MASK;
+	struct ccw_schib_region *region;
+	int ret;
+
+	if (pos + count > sizeof(*region))
+		return -EINVAL;
+
+	mutex_lock(&private->io_mutex);
+	region = private->region[i].data;
+
+	if (cio_update_schib(private->sch)) {
+		ret = -ENODEV;
+		goto out;
+	}
+
+	memcpy(region, &private->sch->schib, sizeof(*region));
+
+	if (copy_to_user(buf, (void *)region + pos, count)) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	ret = count;
+
+out:
+	mutex_unlock(&private->io_mutex);
+	return ret;
+}
+
+static ssize_t vfio_ccw_schib_region_write(struct vfio_ccw_private *private,
+					   const char __user *buf, size_t count,
+					   loff_t *ppos)
+{
+	return -EINVAL;
+}
+
+
+static void vfio_ccw_schib_region_release(struct vfio_ccw_private *private,
+					  struct vfio_ccw_region *region)
+{
+
+}
+
+static const struct vfio_ccw_regops vfio_ccw_schib_region_ops = {
+	.read = vfio_ccw_schib_region_read,
+	.write = vfio_ccw_schib_region_write,
+	.release = vfio_ccw_schib_region_release,
+};
+
+int vfio_ccw_register_schib_dev_regions(struct vfio_ccw_private *private)
+{
+	return vfio_ccw_register_dev_region(private,
+					    VFIO_REGION_SUBTYPE_CCW_SCHIB,
+					    &vfio_ccw_schib_region_ops,
+					    sizeof(struct ccw_schib_region),
+					    VFIO_REGION_INFO_FLAG_READ,
+					    private->schib_region);
+}
+
+static ssize_t vfio_ccw_crw_region_read(struct vfio_ccw_private *private,
+					char __user *buf, size_t count,
+					loff_t *ppos)
+{
+	unsigned int i = VFIO_CCW_OFFSET_TO_INDEX(*ppos) - VFIO_CCW_NUM_REGIONS;
+	loff_t pos = *ppos & VFIO_CCW_OFFSET_MASK;
+	struct ccw_crw_region *region;
+	struct vfio_ccw_crw *crw;
+	int ret;
+
+	if (pos + count > sizeof(*region))
+		return -EINVAL;
+
+	crw = list_first_entry_or_null(&private->crw,
+				       struct vfio_ccw_crw, next);
+
+	if (crw)
+		list_del(&crw->next);
+
+	mutex_lock(&private->io_mutex);
+	region = private->region[i].data;
+
+	if (crw)
+		memcpy(&region->crw, &crw->crw, sizeof(region->crw));
+
+	if (copy_to_user(buf, (void *)region + pos, count))
+		ret = -EFAULT;
+	else
+		ret = count;
+
+	region->crw = 0;
+
+	mutex_unlock(&private->io_mutex);
+
+	kfree(crw);
+
+	/* Notify the guest if more CRWs are on our queue */
+	if (!list_empty(&private->crw) && private->crw_trigger)
+		eventfd_signal(private->crw_trigger, 1);
+
+	return ret;
+}
+
+static ssize_t vfio_ccw_crw_region_write(struct vfio_ccw_private *private,
+					 const char __user *buf, size_t count,
+					 loff_t *ppos)
+{
+	return -EINVAL;
+}
+
+static void vfio_ccw_crw_region_release(struct vfio_ccw_private *private,
+					struct vfio_ccw_region *region)
+{
+
+}
+
+static const struct vfio_ccw_regops vfio_ccw_crw_region_ops = {
+	.read = vfio_ccw_crw_region_read,
+	.write = vfio_ccw_crw_region_write,
+	.release = vfio_ccw_crw_region_release,
+};
+
+int vfio_ccw_register_crw_dev_regions(struct vfio_ccw_private *private)
+{
+	return vfio_ccw_register_dev_region(private,
+					    VFIO_REGION_SUBTYPE_CCW_CRW,
+					    &vfio_ccw_crw_region_ops,
+					    sizeof(struct ccw_crw_region),
+					    VFIO_REGION_INFO_FLAG_READ,
+					    private->crw_region);
+}
diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c
index 3645d1720c4b..b9febc581b1f 100644
--- a/drivers/s390/cio/vfio_ccw_cp.c
+++ b/drivers/s390/cio/vfio_ccw_cp.c
@@ -8,6 +8,7 @@
  *            Xiao Feng Ren <renxiaof@linux.vnet.ibm.com>
  */
 
+#include <linux/ratelimit.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/iommu.h>
@@ -625,23 +626,27 @@ static int ccwchain_fetch_one(struct ccwchain *chain,
  * the target channel program from @orb->cmd.iova to the new ccwchain(s).
  *
  * Limitations:
- * 1. Supports only prefetch enabled mode.
- * 2. Supports idal(c64) ccw chaining.
- * 3. Supports 4k idaw.
+ * 1. Supports idal(c64) ccw chaining.
+ * 2. Supports 4k idaw.
  *
  * Returns:
  *   %0 on success and a negative error value on failure.
  */
 int cp_init(struct channel_program *cp, struct device *mdev, union orb *orb)
 {
+	/* custom ratelimit used to avoid flood during guest IPL */
+	static DEFINE_RATELIMIT_STATE(ratelimit_state, 5 * HZ, 1);
 	int ret;
 
 	/*
-	 * XXX:
-	 * Only support prefetch enable mode now.
+	 * We only support prefetching the channel program. We assume all channel
+	 * programs executed by supported guests likewise support prefetching.
+	 * Executing a channel program that does not specify prefetching will
+	 * typically not cause an error, but a warning is issued to help identify
+	 * the problem if something does break.
 	 */
-	if (!orb->cmd.pfch)
-		return -EOPNOTSUPP;
+	if (!orb->cmd.pfch && __ratelimit(&ratelimit_state))
+		dev_warn(mdev, "Prefetching channel program even though prefetch not specified in ORB");
 
 	INIT_LIST_HEAD(&cp->ccwchain_list);
 	memcpy(&cp->orb, orb, sizeof(*orb));
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c
index 339a6bc0339b..8c625b530035 100644
--- a/drivers/s390/cio/vfio_ccw_drv.c
+++ b/drivers/s390/cio/vfio_ccw_drv.c
@@ -19,6 +19,7 @@
 
 #include <asm/isc.h>
 
+#include "chp.h"
 #include "ioasm.h"
 #include "css.h"
 #include "vfio_ccw_private.h"
@@ -26,6 +27,8 @@
 struct workqueue_struct *vfio_ccw_work_q;
 static struct kmem_cache *vfio_ccw_io_region;
 static struct kmem_cache *vfio_ccw_cmd_region;
+static struct kmem_cache *vfio_ccw_schib_region;
+static struct kmem_cache *vfio_ccw_crw_region;
 
 debug_info_t *vfio_ccw_debug_msg_id;
 debug_info_t *vfio_ccw_debug_trace_id;
@@ -105,6 +108,16 @@ static void vfio_ccw_sch_io_todo(struct work_struct *work)
 		eventfd_signal(private->io_trigger, 1);
 }
 
+static void vfio_ccw_crw_todo(struct work_struct *work)
+{
+	struct vfio_ccw_private *private;
+
+	private = container_of(work, struct vfio_ccw_private, crw_work);
+
+	if (!list_empty(&private->crw) && private->crw_trigger)
+		eventfd_signal(private->crw_trigger, 1);
+}
+
 /*
  * Css driver callbacks
  */
@@ -116,6 +129,18 @@ static void vfio_ccw_sch_irq(struct subchannel *sch)
 	vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_INTERRUPT);
 }
 
+static void vfio_ccw_free_regions(struct vfio_ccw_private *private)
+{
+	if (private->crw_region)
+		kmem_cache_free(vfio_ccw_crw_region, private->crw_region);
+	if (private->schib_region)
+		kmem_cache_free(vfio_ccw_schib_region, private->schib_region);
+	if (private->cmd_region)
+		kmem_cache_free(vfio_ccw_cmd_region, private->cmd_region);
+	if (private->io_region)
+		kmem_cache_free(vfio_ccw_io_region, private->io_region);
+}
+
 static int vfio_ccw_sch_probe(struct subchannel *sch)
 {
 	struct pmcw *pmcw = &sch->schib.pmcw;
@@ -147,6 +172,18 @@ static int vfio_ccw_sch_probe(struct subchannel *sch)
 	if (!private->cmd_region)
 		goto out_free;
 
+	private->schib_region = kmem_cache_zalloc(vfio_ccw_schib_region,
+						  GFP_KERNEL | GFP_DMA);
+
+	if (!private->schib_region)
+		goto out_free;
+
+	private->crw_region = kmem_cache_zalloc(vfio_ccw_crw_region,
+						GFP_KERNEL | GFP_DMA);
+
+	if (!private->crw_region)
+		goto out_free;
+
 	private->sch = sch;
 	dev_set_drvdata(&sch->dev, private);
 	mutex_init(&private->io_mutex);
@@ -159,7 +196,9 @@ static int vfio_ccw_sch_probe(struct subchannel *sch)
 	if (ret)
 		goto out_free;
 
+	INIT_LIST_HEAD(&private->crw);
 	INIT_WORK(&private->io_work, vfio_ccw_sch_io_todo);
+	INIT_WORK(&private->crw_work, vfio_ccw_crw_todo);
 	atomic_set(&private->avail, 1);
 	private->state = VFIO_CCW_STATE_STANDBY;
 
@@ -181,10 +220,7 @@ out_disable:
 	cio_disable_subchannel(sch);
 out_free:
 	dev_set_drvdata(&sch->dev, NULL);
-	if (private->cmd_region)
-		kmem_cache_free(vfio_ccw_cmd_region, private->cmd_region);
-	if (private->io_region)
-		kmem_cache_free(vfio_ccw_io_region, private->io_region);
+	vfio_ccw_free_regions(private);
 	kfree(private->cp.guest_cp);
 	kfree(private);
 	return ret;
@@ -193,15 +229,20 @@ out_free:
 static int vfio_ccw_sch_remove(struct subchannel *sch)
 {
 	struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev);
+	struct vfio_ccw_crw *crw, *temp;
 
 	vfio_ccw_sch_quiesce(sch);
 
+	list_for_each_entry_safe(crw, temp, &private->crw, next) {
+		list_del(&crw->next);
+		kfree(crw);
+	}
+
 	vfio_ccw_mdev_unreg(sch);
 
 	dev_set_drvdata(&sch->dev, NULL);
 
-	kmem_cache_free(vfio_ccw_cmd_region, private->cmd_region);
-	kmem_cache_free(vfio_ccw_io_region, private->io_region);
+	vfio_ccw_free_regions(private);
 	kfree(private->cp.guest_cp);
 	kfree(private);
 
@@ -258,6 +299,83 @@ out_unlock:
 	return rc;
 }
 
+static void vfio_ccw_queue_crw(struct vfio_ccw_private *private,
+			       unsigned int rsc,
+			       unsigned int erc,
+			       unsigned int rsid)
+{
+	struct vfio_ccw_crw *crw;
+
+	/*
+	 * If unable to allocate a CRW, just drop the event and
+	 * carry on.  The guest will either see a later one or
+	 * learn when it issues its own store subchannel.
+	 */
+	crw = kzalloc(sizeof(*crw), GFP_ATOMIC);
+	if (!crw)
+		return;
+
+	/*
+	 * Build the CRW based on the inputs given to us.
+	 */
+	crw->crw.rsc = rsc;
+	crw->crw.erc = erc;
+	crw->crw.rsid = rsid;
+
+	list_add_tail(&crw->next, &private->crw);
+	queue_work(vfio_ccw_work_q, &private->crw_work);
+}
+
+static int vfio_ccw_chp_event(struct subchannel *sch,
+			      struct chp_link *link, int event)
+{
+	struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev);
+	int mask = chp_ssd_get_mask(&sch->ssd_info, link);
+	int retry = 255;
+
+	if (!private || !mask)
+		return 0;
+
+	trace_vfio_ccw_chp_event(private->sch->schid, mask, event);
+	VFIO_CCW_MSG_EVENT(2, "%pUl (%x.%x.%04x): mask=0x%x event=%d\n",
+			   mdev_uuid(private->mdev), sch->schid.cssid,
+			   sch->schid.ssid, sch->schid.sch_no,
+			   mask, event);
+
+	if (cio_update_schib(sch))
+		return -ENODEV;
+
+	switch (event) {
+	case CHP_VARY_OFF:
+		/* Path logically turned off */
+		sch->opm &= ~mask;
+		sch->lpm &= ~mask;
+		if (sch->schib.pmcw.lpum & mask)
+			cio_cancel_halt_clear(sch, &retry);
+		break;
+	case CHP_OFFLINE:
+		/* Path is gone */
+		if (sch->schib.pmcw.lpum & mask)
+			cio_cancel_halt_clear(sch, &retry);
+		vfio_ccw_queue_crw(private, CRW_RSC_CPATH, CRW_ERC_PERRN,
+				   link->chpid.id);
+		break;
+	case CHP_VARY_ON:
+		/* Path logically turned on */
+		sch->opm |= mask;
+		sch->lpm |= mask;
+		break;
+	case CHP_ONLINE:
+		/* Path became available */
+		sch->lpm |= mask & sch->opm;
+		vfio_ccw_queue_crw(private, CRW_RSC_CPATH, CRW_ERC_INIT,
+				   link->chpid.id);
+		break;
+	}
+
+	return 0;
+}
+
 static struct css_device_id vfio_ccw_sch_ids[] = {
 	{ .match_flags = 0x1, .type = SUBCHANNEL_TYPE_IO, },
 	{ /* end of list */ },
@@ -275,6 +393,7 @@ static struct css_driver vfio_ccw_sch_driver = {
 	.remove = vfio_ccw_sch_remove,
 	.shutdown = vfio_ccw_sch_shutdown,
 	.sch_event = vfio_ccw_sch_event,
+	.chp_event = vfio_ccw_chp_event,
 };
 
 static int __init vfio_ccw_debug_init(void)
@@ -304,6 +423,14 @@ static void vfio_ccw_debug_exit(void)
 	debug_unregister(vfio_ccw_debug_trace_id);
 }
 
+static void vfio_ccw_destroy_regions(void)
+{
+	kmem_cache_destroy(vfio_ccw_crw_region);
+	kmem_cache_destroy(vfio_ccw_schib_region);
+	kmem_cache_destroy(vfio_ccw_cmd_region);
+	kmem_cache_destroy(vfio_ccw_io_region);
+}
+
 static int __init vfio_ccw_sch_init(void)
 {
 	int ret;
@@ -336,6 +463,26 @@ static int __init vfio_ccw_sch_init(void)
 		goto out_err;
 	}
 
+	vfio_ccw_schib_region = kmem_cache_create_usercopy("vfio_ccw_schib_region",
+					sizeof(struct ccw_schib_region), 0,
+					SLAB_ACCOUNT, 0,
+					sizeof(struct ccw_schib_region), NULL);
+
+	if (!vfio_ccw_schib_region) {
+		ret = -ENOMEM;
+		goto out_err;
+	}
+
+	vfio_ccw_crw_region = kmem_cache_create_usercopy("vfio_ccw_crw_region",
+					sizeof(struct ccw_crw_region), 0,
+					SLAB_ACCOUNT, 0,
+					sizeof(struct ccw_crw_region), NULL);
+
+	if (!vfio_ccw_crw_region) {
+		ret = -ENOMEM;
+		goto out_err;
+	}
+
 	isc_register(VFIO_CCW_ISC);
 	ret = css_driver_register(&vfio_ccw_sch_driver);
 	if (ret) {
@@ -346,8 +493,7 @@ static int __init vfio_ccw_sch_init(void)
 	return ret;
 
 out_err:
-	kmem_cache_destroy(vfio_ccw_cmd_region);
-	kmem_cache_destroy(vfio_ccw_io_region);
+	vfio_ccw_destroy_regions();
 	destroy_workqueue(vfio_ccw_work_q);
 	vfio_ccw_debug_exit();
 	return ret;
@@ -357,8 +503,7 @@ static void __exit vfio_ccw_sch_exit(void)
 {
 	css_driver_unregister(&vfio_ccw_sch_driver);
 	isc_unregister(VFIO_CCW_ISC);
-	kmem_cache_destroy(vfio_ccw_io_region);
-	kmem_cache_destroy(vfio_ccw_cmd_region);
+	vfio_ccw_destroy_regions();
 	destroy_workqueue(vfio_ccw_work_q);
 	vfio_ccw_debug_exit();
 }
diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
index f0d71ab77c50..8b3ed5b45277 100644
--- a/drivers/s390/cio/vfio_ccw_ops.c
+++ b/drivers/s390/cio/vfio_ccw_ops.c
@@ -172,8 +172,22 @@ static int vfio_ccw_mdev_open(struct mdev_device *mdev)
 
 	ret = vfio_ccw_register_async_dev_regions(private);
 	if (ret)
-		vfio_unregister_notifier(mdev_dev(mdev), VFIO_IOMMU_NOTIFY,
-					 &private->nb);
+		goto out_unregister;
+
+	ret = vfio_ccw_register_schib_dev_regions(private);
+	if (ret)
+		goto out_unregister;
+
+	ret = vfio_ccw_register_crw_dev_regions(private);
+	if (ret)
+		goto out_unregister;
+
+	return ret;
+
+out_unregister:
+	vfio_ccw_unregister_dev_regions(private);
+	vfio_unregister_notifier(mdev_dev(mdev), VFIO_IOMMU_NOTIFY,
+				 &private->nb);
 	return ret;
 }
 
@@ -181,7 +195,6 @@ static void vfio_ccw_mdev_release(struct mdev_device *mdev)
 {
 	struct vfio_ccw_private *private =
 		dev_get_drvdata(mdev_parent_dev(mdev));
-	int i;
 
 	if ((private->state != VFIO_CCW_STATE_NOT_OPER) &&
 	    (private->state != VFIO_CCW_STATE_STANDBY)) {
@@ -191,15 +204,9 @@ static void vfio_ccw_mdev_release(struct mdev_device *mdev)
 	}
 
 	cp_free(&private->cp);
+	vfio_ccw_unregister_dev_regions(private);
 	vfio_unregister_notifier(mdev_dev(mdev), VFIO_IOMMU_NOTIFY,
 				 &private->nb);
-
-	for (i = 0; i < private->num_regions; i++)
-		private->region[i].ops->release(private, &private->region[i]);
-
-	private->num_regions = 0;
-	kfree(private->region);
-	private->region = NULL;
 }
 
 static ssize_t vfio_ccw_mdev_read_io_region(struct vfio_ccw_private *private,
@@ -384,17 +391,22 @@ static int vfio_ccw_mdev_get_region_info(struct vfio_region_info *info,
 
 static int vfio_ccw_mdev_get_irq_info(struct vfio_irq_info *info)
 {
-	if (info->index != VFIO_CCW_IO_IRQ_INDEX)
+	switch (info->index) {
+	case VFIO_CCW_IO_IRQ_INDEX:
+	case VFIO_CCW_CRW_IRQ_INDEX:
+		info->count = 1;
+		info->flags = VFIO_IRQ_INFO_EVENTFD;
+		break;
+	default:
 		return -EINVAL;
-
-	info->count = 1;
-	info->flags = VFIO_IRQ_INFO_EVENTFD;
+	}
 
 	return 0;
 }
 
 static int vfio_ccw_mdev_set_irqs(struct mdev_device *mdev,
 				  uint32_t flags,
+				  uint32_t index,
 				  void __user *data)
 {
 	struct vfio_ccw_private *private;
@@ -404,7 +416,17 @@ static int vfio_ccw_mdev_set_irqs(struct mdev_device *mdev,
 		return -EINVAL;
 
 	private = dev_get_drvdata(mdev_parent_dev(mdev));
-	ctx = &private->io_trigger;
+
+	switch (index) {
+	case VFIO_CCW_IO_IRQ_INDEX:
+		ctx = &private->io_trigger;
+		break;
+	case VFIO_CCW_CRW_IRQ_INDEX:
+		ctx = &private->crw_trigger;
+		break;
+	default:
+		return -EINVAL;
+	}
 
 	switch (flags & VFIO_IRQ_SET_DATA_TYPE_MASK) {
 	case VFIO_IRQ_SET_DATA_NONE:
@@ -482,6 +504,17 @@ int vfio_ccw_register_dev_region(struct vfio_ccw_private *private,
 	return 0;
 }
 
+void vfio_ccw_unregister_dev_regions(struct vfio_ccw_private *private)
+{
+	int i;
+
+	for (i = 0; i < private->num_regions; i++)
+		private->region[i].ops->release(private, &private->region[i]);
+	private->num_regions = 0;
+	kfree(private->region);
+	private->region = NULL;
+}
+
 static ssize_t vfio_ccw_mdev_ioctl(struct mdev_device *mdev,
 				   unsigned int cmd,
 				   unsigned long arg)
@@ -565,7 +598,7 @@ static ssize_t vfio_ccw_mdev_ioctl(struct mdev_device *mdev,
 			return ret;
 
 		data = (void __user *)(arg + minsz);
-		return vfio_ccw_mdev_set_irqs(mdev, hdr.flags, data);
+		return vfio_ccw_mdev_set_irqs(mdev, hdr.flags, hdr.index, data);
 	}
 	case VFIO_DEVICE_RESET:
 		return vfio_ccw_mdev_reset(mdev);
diff --git a/drivers/s390/cio/vfio_ccw_private.h b/drivers/s390/cio/vfio_ccw_private.h
index 9b9bb4982972..8723156b29ea 100644
--- a/drivers/s390/cio/vfio_ccw_private.h
+++ b/drivers/s390/cio/vfio_ccw_private.h
@@ -17,6 +17,7 @@
 #include <linux/eventfd.h>
 #include <linux/workqueue.h>
 #include <linux/vfio_ccw.h>
+#include <asm/crw.h>
 #include <asm/debug.h>
 
 #include "css.h"
@@ -53,8 +54,16 @@ int vfio_ccw_register_dev_region(struct vfio_ccw_private *private,
 				 unsigned int subtype,
 				 const struct vfio_ccw_regops *ops,
 				 size_t size, u32 flags, void *data);
+void vfio_ccw_unregister_dev_regions(struct vfio_ccw_private *private);
 
 int vfio_ccw_register_async_dev_regions(struct vfio_ccw_private *private);
+int vfio_ccw_register_schib_dev_regions(struct vfio_ccw_private *private);
+int vfio_ccw_register_crw_dev_regions(struct vfio_ccw_private *private);
+
+struct vfio_ccw_crw {
+	struct list_head	next;
+	struct crw		crw;
+};
 
 /**
  * struct vfio_ccw_private
@@ -68,6 +77,8 @@ int vfio_ccw_register_async_dev_regions(struct vfio_ccw_private *private);
  * @io_mutex: protect against concurrent update of I/O regions
  * @region: additional regions for other subchannel operations
  * @cmd_region: MMIO region for asynchronous I/O commands other than START
+ * @schib_region: MMIO region for SCHIB information
+ * @crw_region: MMIO region for getting channel report words
  * @num_regions: number of additional regions
  * @cp: channel program for the current I/O operation
  * @irb: irb info received from interrupt
@@ -86,14 +97,19 @@ struct vfio_ccw_private {
 	struct mutex		io_mutex;
 	struct vfio_ccw_region *region;
 	struct ccw_cmd_region	*cmd_region;
+	struct ccw_schib_region *schib_region;
+	struct ccw_crw_region	*crw_region;
 	int num_regions;
 
 	struct channel_program	cp;
 	struct irb		irb;
 	union scsw		scsw;
+	struct list_head	crw;
 
 	struct eventfd_ctx	*io_trigger;
+	struct eventfd_ctx	*crw_trigger;
 	struct work_struct	io_work;
+	struct work_struct	crw_work;
 } __aligned(8);
 
 extern int vfio_ccw_mdev_reg(struct subchannel *sch);
diff --git a/drivers/s390/cio/vfio_ccw_trace.c b/drivers/s390/cio/vfio_ccw_trace.c
index 8c671d2519f6..4a0205905afc 100644
--- a/drivers/s390/cio/vfio_ccw_trace.c
+++ b/drivers/s390/cio/vfio_ccw_trace.c
@@ -9,6 +9,7 @@
 #define CREATE_TRACE_POINTS
 #include "vfio_ccw_trace.h"
 
+EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_chp_event);
 EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_fsm_async_request);
 EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_fsm_event);
 EXPORT_TRACEPOINT_SYMBOL(vfio_ccw_fsm_io_request);
diff --git a/drivers/s390/cio/vfio_ccw_trace.h b/drivers/s390/cio/vfio_ccw_trace.h
index f5d31887d413..62fb30598d47 100644
--- a/drivers/s390/cio/vfio_ccw_trace.h
+++ b/drivers/s390/cio/vfio_ccw_trace.h
@@ -17,6 +17,36 @@
 
 #include <linux/tracepoint.h>
 
+TRACE_EVENT(vfio_ccw_chp_event,
+	TP_PROTO(struct subchannel_id schid,
+		 int mask,
+		 int event),
+	TP_ARGS(schid, mask, event),
+
+	TP_STRUCT__entry(
+		__field(u8, cssid)
+		__field(u8, ssid)
+		__field(u16, sch_no)
+		__field(int, mask)
+		__field(int, event)
+	),
+
+	TP_fast_assign(
+		__entry->cssid = schid.cssid;
+		__entry->ssid = schid.ssid;
+		__entry->sch_no = schid.sch_no;
+		__entry->mask = mask;
+		__entry->event = event;
+	),
+
+	TP_printk("schid=%x.%x.%04x mask=0x%x event=%d",
+		  __entry->cssid,
+		  __entry->ssid,
+		  __entry->sch_no,
+		  __entry->mask,
+		  __entry->event)
+);
+
 TRACE_EVENT(vfio_ccw_fsm_async_request,
 	TP_PROTO(struct subchannel_id schid,
 		 int command,
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 35064443e748..e71ca4a719a5 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -62,8 +62,10 @@ MODULE_PARM_DESC(aqmask, "AP bus domain mask.");
 
 static struct device *ap_root_device;
 
-DEFINE_SPINLOCK(ap_list_lock);
-LIST_HEAD(ap_card_list);
+/* Hashtable of all queue devices on the AP bus */
+DEFINE_HASHTABLE(ap_queues, 8);
+/* lock used for the ap_queues hashtable */
+DEFINE_SPINLOCK(ap_queues_lock);
 
 /* Default permissions (ioctl, card and domain masking) */
 struct ap_perms ap_perms;
@@ -414,7 +416,7 @@ static void ap_interrupt_handler(struct airq_struct *airq, bool floating)
  */
 static void ap_tasklet_fn(unsigned long dummy)
 {
-	struct ap_card *ac;
+	int bkt;
 	struct ap_queue *aq;
 	enum ap_wait wait = AP_WAIT_NONE;
 
@@ -425,34 +427,30 @@ static void ap_tasklet_fn(unsigned long dummy)
 	if (ap_using_interrupts())
 		xchg(ap_airq.lsi_ptr, 0);
 
-	spin_lock_bh(&ap_list_lock);
-	for_each_ap_card(ac) {
-		for_each_ap_queue(aq, ac) {
-			spin_lock_bh(&aq->lock);
-			wait = min(wait, ap_sm_event_loop(aq, AP_EVENT_POLL));
-			spin_unlock_bh(&aq->lock);
-		}
+	spin_lock_bh(&ap_queues_lock);
+	hash_for_each(ap_queues, bkt, aq, hnode) {
+		spin_lock_bh(&aq->lock);
+		wait = min(wait, ap_sm_event_loop(aq, AP_EVENT_POLL));
+		spin_unlock_bh(&aq->lock);
 	}
-	spin_unlock_bh(&ap_list_lock);
+	spin_unlock_bh(&ap_queues_lock);
 
 	ap_wait(wait);
 }
 
 static int ap_pending_requests(void)
 {
-	struct ap_card *ac;
+	int bkt;
 	struct ap_queue *aq;
 
-	spin_lock_bh(&ap_list_lock);
-	for_each_ap_card(ac) {
-		for_each_ap_queue(aq, ac) {
-			if (aq->queue_count == 0)
-				continue;
-			spin_unlock_bh(&ap_list_lock);
-			return 1;
-		}
+	spin_lock_bh(&ap_queues_lock);
+	hash_for_each(ap_queues, bkt, aq, hnode) {
+		if (aq->queue_count == 0)
+			continue;
+		spin_unlock_bh(&ap_queues_lock);
+		return 1;
 	}
-	spin_unlock_bh(&ap_list_lock);
+	spin_unlock_bh(&ap_queues_lock);
 	return 0;
 }
 
@@ -683,24 +681,20 @@ static int ap_device_probe(struct device *dev)
 	}
 
 	/* Add queue/card to list of active queues/cards */
-	spin_lock_bh(&ap_list_lock);
-	if (is_card_dev(dev))
-		list_add(&to_ap_card(dev)->list, &ap_card_list);
-	else
-		list_add(&to_ap_queue(dev)->list,
-			 &to_ap_queue(dev)->card->queues);
-	spin_unlock_bh(&ap_list_lock);
+	spin_lock_bh(&ap_queues_lock);
+	if (is_queue_dev(dev))
+		hash_add(ap_queues, &to_ap_queue(dev)->hnode,
+			 to_ap_queue(dev)->qid);
+	spin_unlock_bh(&ap_queues_lock);
 
 	ap_dev->drv = ap_drv;
 	rc = ap_drv->probe ? ap_drv->probe(ap_dev) : -ENODEV;
 
 	if (rc) {
-		spin_lock_bh(&ap_list_lock);
-		if (is_card_dev(dev))
-			list_del_init(&to_ap_card(dev)->list);
-		else
-			list_del_init(&to_ap_queue(dev)->list);
-		spin_unlock_bh(&ap_list_lock);
+		spin_lock_bh(&ap_queues_lock);
+		if (is_queue_dev(dev))
+			hash_del(&to_ap_queue(dev)->hnode);
+		spin_unlock_bh(&ap_queues_lock);
 		ap_dev->drv = NULL;
 	}
 
@@ -725,16 +719,33 @@ static int ap_device_remove(struct device *dev)
 		ap_queue_remove(to_ap_queue(dev));
 
 	/* Remove queue/card from list of active queues/cards */
-	spin_lock_bh(&ap_list_lock);
-	if (is_card_dev(dev))
-		list_del_init(&to_ap_card(dev)->list);
-	else
-		list_del_init(&to_ap_queue(dev)->list);
-	spin_unlock_bh(&ap_list_lock);
+	spin_lock_bh(&ap_queues_lock);
+	if (is_queue_dev(dev))
+		hash_del(&to_ap_queue(dev)->hnode);
+	spin_unlock_bh(&ap_queues_lock);
 
 	return 0;
 }
 
+struct ap_queue *ap_get_qdev(ap_qid_t qid)
+{
+	int bkt;
+	struct ap_queue *aq;
+
+	spin_lock_bh(&ap_queues_lock);
+	hash_for_each(ap_queues, bkt, aq, hnode) {
+		if (aq->qid == qid) {
+			get_device(&aq->ap_dev.device);
+			spin_unlock_bh(&ap_queues_lock);
+			return aq;
+		}
+	}
+	spin_unlock_bh(&ap_queues_lock);
+
+	return NULL;
+}
+EXPORT_SYMBOL(ap_get_qdev);
+
 int ap_driver_register(struct ap_driver *ap_drv, struct module *owner,
 		       char *name)
 {
@@ -1506,6 +1517,9 @@ static int __init ap_module_init(void)
 		return -ENODEV;
 	}
 
+	/* init ap_queue hashtable */
+	hash_init(ap_queues);
+
 	/* set up the AP permissions (ioctls, ap and aq masks) */
 	ap_perms_init();
 
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h
index 8e8e37b6c0ee..053cc34d2ca2 100644
--- a/drivers/s390/crypto/ap_bus.h
+++ b/drivers/s390/crypto/ap_bus.h
@@ -15,6 +15,7 @@
 
 #include <linux/device.h>
 #include <linux/types.h>
+#include <linux/hashtable.h>
 #include <asm/isc.h>
 #include <asm/ap.h>
 
@@ -27,8 +28,8 @@
 
 extern int ap_domain_index;
 
-extern spinlock_t ap_list_lock;
-extern struct list_head ap_card_list;
+extern DECLARE_HASHTABLE(ap_queues, 8);
+extern spinlock_t ap_queues_lock;
 
 static inline int ap_test_bit(unsigned int *ptr, unsigned int nr)
 {
@@ -152,8 +153,6 @@ struct ap_device {
 
 struct ap_card {
 	struct ap_device ap_dev;
-	struct list_head list;		/* Private list of AP cards. */
-	struct list_head queues;	/* List of assoc. AP queues */
 	void *private;			/* ap driver private pointer. */
 	int raw_hwtype;			/* AP raw hardware type. */
 	unsigned int functions;		/* AP device function bitfield. */
@@ -166,7 +165,7 @@ struct ap_card {
 
 struct ap_queue {
 	struct ap_device ap_dev;
-	struct list_head list;		/* Private list of AP queues. */
+	struct hlist_node hnode;	/* Node for the ap_queues hashtable */
 	struct ap_card *card;		/* Ptr to assoc. AP card. */
 	spinlock_t lock;		/* Per device lock. */
 	void *private;			/* ap driver private pointer. */
@@ -223,12 +222,6 @@ static inline void ap_release_message(struct ap_message *ap_msg)
 	kzfree(ap_msg->private);
 }
 
-#define for_each_ap_card(_ac) \
-	list_for_each_entry(_ac, &ap_card_list, list)
-
-#define for_each_ap_queue(_aq, _ac) \
-	list_for_each_entry(_aq, &(_ac)->queues, list)
-
 /*
  * Note: don't use ap_send/ap_recv after using ap_queue_message
  * for the first time. Otherwise the ap message queue will get
@@ -270,6 +263,16 @@ extern struct ap_perms ap_perms;
 extern struct mutex ap_perms_mutex;
 
 /*
+ * Get ap_queue device for this qid.
+ * Returns ptr to the struct ap_queue device or NULL if there
+ * was no ap_queue device with this qid found. When something is
+ * found, the reference count of the embedded device is increased.
+ * So the caller has to decrease the reference count after use
+ * with a call to put_device(&aq->ap_dev.device).
+ */
+struct ap_queue *ap_get_qdev(ap_qid_t qid);
+
+/*
  * check APQN for owned/reserved by ap bus and default driver(s).
  * Checks if this APQN is or will be in use by the ap bus
  * and the default set of drivers.
diff --git a/drivers/s390/crypto/ap_card.c b/drivers/s390/crypto/ap_card.c
index 0a39dfdb6a1d..6588713319ba 100644
--- a/drivers/s390/crypto/ap_card.c
+++ b/drivers/s390/crypto/ap_card.c
@@ -66,9 +66,9 @@ static ssize_t request_count_show(struct device *dev,
 	u64 req_cnt;
 
 	req_cnt = 0;
-	spin_lock_bh(&ap_list_lock);
+	spin_lock_bh(&ap_queues_lock);
 	req_cnt = atomic64_read(&ac->total_request_count);
-	spin_unlock_bh(&ap_list_lock);
+	spin_unlock_bh(&ap_queues_lock);
 	return scnprintf(buf, PAGE_SIZE, "%llu\n", req_cnt);
 }
 
@@ -76,13 +76,15 @@ static ssize_t request_count_store(struct device *dev,
 				   struct device_attribute *attr,
 				   const char *buf, size_t count)
 {
-	struct ap_card *ac = to_ap_card(dev);
+	int bkt;
 	struct ap_queue *aq;
+	struct ap_card *ac = to_ap_card(dev);
 
-	spin_lock_bh(&ap_list_lock);
-	for_each_ap_queue(aq, ac)
-		aq->total_request_count = 0;
-	spin_unlock_bh(&ap_list_lock);
+	spin_lock_bh(&ap_queues_lock);
+	hash_for_each(ap_queues, bkt, aq, hnode)
+		if (ac == aq->card)
+			aq->total_request_count = 0;
+	spin_unlock_bh(&ap_queues_lock);
 	atomic64_set(&ac->total_request_count, 0);
 
 	return count;
@@ -93,15 +95,17 @@ static DEVICE_ATTR_RW(request_count);
 static ssize_t requestq_count_show(struct device *dev,
 				   struct device_attribute *attr, char *buf)
 {
-	struct ap_card *ac = to_ap_card(dev);
+	int bkt;
 	struct ap_queue *aq;
 	unsigned int reqq_cnt;
+	struct ap_card *ac = to_ap_card(dev);
 
 	reqq_cnt = 0;
-	spin_lock_bh(&ap_list_lock);
-	for_each_ap_queue(aq, ac)
-		reqq_cnt += aq->requestq_count;
-	spin_unlock_bh(&ap_list_lock);
+	spin_lock_bh(&ap_queues_lock);
+	hash_for_each(ap_queues, bkt, aq, hnode)
+		if (ac == aq->card)
+			reqq_cnt += aq->requestq_count;
+	spin_unlock_bh(&ap_queues_lock);
 	return scnprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt);
 }
 
@@ -110,15 +114,17 @@ static DEVICE_ATTR_RO(requestq_count);
 static ssize_t pendingq_count_show(struct device *dev,
 				   struct device_attribute *attr, char *buf)
 {
-	struct ap_card *ac = to_ap_card(dev);
+	int bkt;
 	struct ap_queue *aq;
 	unsigned int penq_cnt;
+	struct ap_card *ac = to_ap_card(dev);
 
 	penq_cnt = 0;
-	spin_lock_bh(&ap_list_lock);
-	for_each_ap_queue(aq, ac)
-		penq_cnt += aq->pendingq_count;
-	spin_unlock_bh(&ap_list_lock);
+	spin_lock_bh(&ap_queues_lock);
+	hash_for_each(ap_queues, bkt, aq, hnode)
+		if (ac == aq->card)
+			penq_cnt += aq->pendingq_count;
+	spin_unlock_bh(&ap_queues_lock);
 	return scnprintf(buf, PAGE_SIZE, "%d\n", penq_cnt);
 }
 
@@ -163,11 +169,6 @@ static void ap_card_device_release(struct device *dev)
 {
 	struct ap_card *ac = to_ap_card(dev);
 
-	if (!list_empty(&ac->list)) {
-		spin_lock_bh(&ap_list_lock);
-		list_del_init(&ac->list);
-		spin_unlock_bh(&ap_list_lock);
-	}
 	kfree(ac);
 }
 
@@ -179,8 +180,6 @@ struct ap_card *ap_card_create(int id, int queue_depth, int raw_type,
 	ac = kzalloc(sizeof(*ac), GFP_KERNEL);
 	if (!ac)
 		return NULL;
-	INIT_LIST_HEAD(&ac->list);
-	INIT_LIST_HEAD(&ac->queues);
 	ac->ap_dev.device.release = ap_card_device_release;
 	ac->ap_dev.device.type = &ap_card_type;
 	ac->ap_dev.device_type = comp_type;
diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c
index 0eaf1d04e8df..73b077dca3e6 100644
--- a/drivers/s390/crypto/ap_queue.c
+++ b/drivers/s390/crypto/ap_queue.c
@@ -568,11 +568,10 @@ static void ap_queue_device_release(struct device *dev)
 {
 	struct ap_queue *aq = to_ap_queue(dev);
 
-	if (!list_empty(&aq->list)) {
-		spin_lock_bh(&ap_list_lock);
-		list_del_init(&aq->list);
-		spin_unlock_bh(&ap_list_lock);
-	}
+	spin_lock_bh(&ap_queues_lock);
+	hash_del(&aq->hnode);
+	spin_unlock_bh(&ap_queues_lock);
+
 	kfree(aq);
 }
 
@@ -590,7 +589,6 @@ struct ap_queue *ap_queue_create(ap_qid_t qid, int device_type)
 	aq->state = AP_STATE_UNBOUND;
 	aq->interrupt = AP_INTR_DISABLED;
 	spin_lock_init(&aq->lock);
-	INIT_LIST_HEAD(&aq->list);
 	INIT_LIST_HEAD(&aq->pendingq);
 	INIT_LIST_HEAD(&aq->requestq);
 	timer_setup(&aq->timeout, ap_request_timeout, 0);
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index da47e423e1b1..2d3bca3c0141 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -20,6 +20,7 @@
 #include <linux/list.h>
 #include <linux/hash.h>
 #include <linux/hashtable.h>
+#include <asm/chsc.h>
 #include <asm/setup.h>
 #include "qeth_core.h"
 #include "qeth_l2.h"
@@ -27,8 +28,8 @@
 static void qeth_bridgeport_query_support(struct qeth_card *card);
 static void qeth_bridge_state_change(struct qeth_card *card,
 					struct qeth_ipa_cmd *cmd);
-static void qeth_bridge_host_event(struct qeth_card *card,
-					struct qeth_ipa_cmd *cmd);
+static void qeth_addr_change_event(struct qeth_card *card,
+				   struct qeth_ipa_cmd *cmd);
 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card);
 static void qeth_l2_vnicc_init(struct qeth_card *card);
 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
@@ -629,6 +630,72 @@ static void qeth_l2_set_rx_mode(struct net_device *dev)
 	schedule_work(&card->rx_mode_work);
 }
 
+/**
+ *	qeth_l2_pnso() - perform network subchannel operation
+ *	@card: qeth_card structure pointer
+ *	@cnc: Boolean Change-Notification Control
+ *	@cb: Callback function will be executed for each element
+ *		of the address list
+ *	@priv: Pointer to pass to the callback function.
+ *
+ *	Collects network information in a network address list and calls the
+ *	callback function for every entry in the list. If "change-notification-
+ *	control" is set, further changes in the address list will be reported
+ *	via the IPA command.
+ */
+static int qeth_l2_pnso(struct qeth_card *card, int cnc,
+			void (*cb)(void *priv, struct chsc_pnso_naid_l2 *entry),
+			void *priv)
+{
+	struct ccw_device *ddev = CARD_DDEV(card);
+	struct chsc_pnso_area *rr;
+	u32 prev_instance = 0;
+	int isfirstblock = 1;
+	int i, size, elems;
+	int rc;
+
+	QETH_CARD_TEXT(card, 2, "PNSO");
+	rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL);
+	if (rr == NULL)
+		return -ENOMEM;
+	do {
+		/* on the first iteration, naihdr.resume_token will be zero */
+		rc = ccw_device_pnso(ddev, rr, rr->naihdr.resume_token, cnc);
+		if (rc)
+			continue;
+		if (cb == NULL)
+			continue;
+
+		size = rr->naihdr.naids;
+		if (size != sizeof(struct chsc_pnso_naid_l2)) {
+			WARN_ON_ONCE(1);
+			continue;
+		}
+
+		elems = (rr->response.length - sizeof(struct chsc_header) -
+			 sizeof(struct chsc_pnso_naihdr)) / size;
+
+		if (!isfirstblock && (rr->naihdr.instance != prev_instance)) {
+			/* Inform the caller that they need to scrap */
+			/* the data that was already reported via cb */
+			rc = -EAGAIN;
+			break;
+		}
+		isfirstblock = 0;
+		prev_instance = rr->naihdr.instance;
+		for (i = 0; i < elems; i++)
+			(*cb)(priv, &rr->entries[i]);
+	} while ((rc == -EBUSY) || (!rc && /* list stored */
+		   /* resume token is non-zero => list incomplete */
+		   (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2)));
+
+	if (rc)
+		QETH_CARD_TEXT_(card, 2, "PNrp%04x", rr->response.code);
+
+	free_page((unsigned long)rr);
+	return rc;
+}
+
 static const struct net_device_ops qeth_l2_netdev_ops = {
 	.ndo_open		= qeth_open,
 	.ndo_stop		= qeth_stop,
@@ -856,7 +923,7 @@ static int qeth_l2_control_event(struct qeth_card *card,
 		} else
 			return 1;
 	case IPA_CMD_ADDRESS_CHANGE_NOTIF:
-		qeth_bridge_host_event(card, cmd);
+		qeth_addr_change_event(card, cmd);
 		return 0;
 	default:
 		return 1;
@@ -973,8 +1040,10 @@ enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
  * for all currently registered addresses.
  */
 static void qeth_bridge_emit_host_event(struct qeth_card *card,
-	enum qeth_an_event_type evtype,
-	u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
+					enum qeth_an_event_type evtype,
+					u8 code,
+					struct net_if_token *token,
+					struct mac_addr_lnid *addr_lnid)
 {
 	char str[7][32];
 	char *env[8];
@@ -1091,74 +1160,76 @@ static void qeth_bridge_state_change(struct qeth_card *card,
 	queue_work(card->event_wq, &data->worker);
 }
 
-struct qeth_bridge_host_data {
+struct qeth_addr_change_data {
 	struct work_struct worker;
 	struct qeth_card *card;
-	struct qeth_ipacmd_addr_change hostevs;
+	struct qeth_ipacmd_addr_change ac_event;
 };
 
-static void qeth_bridge_host_event_worker(struct work_struct *work)
+static void qeth_addr_change_event_worker(struct work_struct *work)
 {
-	struct qeth_bridge_host_data *data =
-		container_of(work, struct qeth_bridge_host_data, worker);
+	struct qeth_addr_change_data *data =
+		container_of(work, struct qeth_addr_change_data, worker);
 	int i;
 
-	if (data->hostevs.lost_event_mask) {
+	QETH_CARD_TEXT(data->card, 4, "adrchgew");
+	if (data->ac_event.lost_event_mask) {
 		dev_info(&data->card->gdev->dev,
-"Address notification from the Bridge Port stopped %s (%s)\n",
-			data->card->dev->name,
-			(data->hostevs.lost_event_mask == 0x01)
+			 "Address change notification stopped on %s (%s)\n",
+			 data->card->dev->name,
+			(data->ac_event.lost_event_mask == 0x01)
 			? "Overflow"
-			: (data->hostevs.lost_event_mask == 0x02)
+			: (data->ac_event.lost_event_mask == 0x02)
 			? "Bridge port state change"
 			: "Unknown reason");
 		mutex_lock(&data->card->sbp_lock);
 		data->card->options.sbp.hostnotification = 0;
 		mutex_unlock(&data->card->sbp_lock);
 		qeth_bridge_emit_host_event(data->card, anev_abort,
-			0, NULL, NULL);
+					    0, NULL, NULL);
 	} else
-		for (i = 0; i < data->hostevs.num_entries; i++) {
+		for (i = 0; i < data->ac_event.num_entries; i++) {
 			struct qeth_ipacmd_addr_change_entry *entry =
-					&data->hostevs.entry[i];
+					&data->ac_event.entry[i];
 			qeth_bridge_emit_host_event(data->card,
-					anev_reg_unreg,
-					entry->change_code,
-					&entry->token, &entry->addr_lnid);
+						    anev_reg_unreg,
+						    entry->change_code,
+						    &entry->token,
+						    &entry->addr_lnid);
 		}
 	kfree(data);
 }
 
-static void qeth_bridge_host_event(struct qeth_card *card,
-					struct qeth_ipa_cmd *cmd)
+static void qeth_addr_change_event(struct qeth_card *card,
+				   struct qeth_ipa_cmd *cmd)
 {
 	struct qeth_ipacmd_addr_change *hostevs =
 		 &cmd->data.addrchange;
-	struct qeth_bridge_host_data *data;
+	struct qeth_addr_change_data *data;
 	int extrasize;
 
-	QETH_CARD_TEXT(card, 2, "brhostev");
+	QETH_CARD_TEXT(card, 4, "adrchgev");
 	if (cmd->hdr.return_code != 0x0000) {
 		if (cmd->hdr.return_code == 0x0010) {
 			if (hostevs->lost_event_mask == 0x00)
 				hostevs->lost_event_mask = 0xff;
 		} else {
-			QETH_CARD_TEXT_(card, 2, "BPHe%04x",
+			QETH_CARD_TEXT_(card, 2, "ACHN%04x",
 				cmd->hdr.return_code);
 			return;
 		}
 	}
 	extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
 						hostevs->num_entries;
-	data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
-		GFP_ATOMIC);
+	data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize,
+		       GFP_ATOMIC);
 	if (!data) {
-		QETH_CARD_TEXT(card, 2, "BPHalloc");
+		QETH_CARD_TEXT(card, 2, "ACNalloc");
 		return;
 	}
-	INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
+	INIT_WORK(&data->worker, qeth_addr_change_event_worker);
 	data->card = card;
-	memcpy(&data->hostevs, hostevs,
+	memcpy(&data->ac_event, hostevs,
 			sizeof(struct qeth_ipacmd_addr_change) + extrasize);
 	queue_work(card->event_wq, &data->worker);
 }
@@ -1448,63 +1519,18 @@ int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
 	return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL);
 }
 
-/**
- * qeth_anset_makerc() - derive "traditional" error from hardware codes.
- * @card:		      qeth_card structure pointer, for debug messages.
- *
- * Returns negative errno-compatible error indication or 0 on success.
- */
-static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
-{
-	int rc;
-
-	if (pnso_rc == 0)
-		switch (response) {
-		case 0x0001:
-			rc = 0;
-			break;
-		case 0x0004:
-		case 0x0100:
-		case 0x0106:
-			rc = -EOPNOTSUPP;
-			dev_err(&card->gdev->dev,
-				"Setting address notification failed\n");
-			break;
-		case 0x0107:
-			rc = -EAGAIN;
-			break;
-		default:
-			rc = -EIO;
-		}
-	else
-		rc = -EIO;
-
-	if (rc) {
-		QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
-		QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
-	}
-	return rc;
-}
-
 static void qeth_bridgeport_an_set_cb(void *priv,
-		enum qdio_brinfo_entry_type type, void *entry)
+				      struct chsc_pnso_naid_l2 *entry)
 {
 	struct qeth_card *card = (struct qeth_card *)priv;
-	struct qdio_brinfo_entry_l2 *l2entry;
 	u8 code;
 
-	if (type != l2_addr_lnid) {
-		WARN_ON_ONCE(1);
-		return;
-	}
-
-	l2entry = (struct qdio_brinfo_entry_l2 *)entry;
 	code = IPA_ADDR_CHANGE_CODE_MACADDR;
-	if (l2entry->addr_lnid.lnid < VLAN_N_VID)
+	if (entry->addr_lnid.lnid < VLAN_N_VID)
 		code |= IPA_ADDR_CHANGE_CODE_VLANID;
 	qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
-		(struct net_if_token *)&l2entry->nit,
-		(struct mac_addr_lnid *)&l2entry->addr_lnid);
+				    (struct net_if_token *)&entry->nit,
+				    (struct mac_addr_lnid *)&entry->addr_lnid);
 }
 
 /**
@@ -1520,22 +1546,16 @@ static void qeth_bridgeport_an_set_cb(void *priv,
 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
 {
 	int rc;
-	u16 response;
-	struct ccw_device *ddev;
-	struct subchannel_id schid;
 
 	if (!card->options.sbp.supported_funcs)
 		return -EOPNOTSUPP;
-	ddev = CARD_DDEV(card);
-	ccw_device_get_schid(ddev, &schid);
 
 	if (enable) {
 		qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
-		rc = qdio_pnso_brinfo(schid, 1, &response,
-			qeth_bridgeport_an_set_cb, card);
+		rc = qeth_l2_pnso(card, 1, qeth_bridgeport_an_set_cb, card);
 	} else
-		rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
-	return qeth_anset_makerc(card, rc, response);
+		rc = qeth_l2_pnso(card, 0, NULL, NULL);
+	return rc;
 }
 
 static bool qeth_bridgeport_is_in_use(struct qeth_card *card)