Merge tag 'vfio-ccw-20181213' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/vfio-ccw into features
Pull vfio-ccw from Cornelia Huck with the following changes:
- remove unneeded BOXED state
- maintainership changes
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 9f6f392..6df622f 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -382,9 +382,7 @@
if (ai == -1UL)
break;
inc_irq_stat(IRQIO_MSI);
- airq_iv_lock(aibv, ai);
generic_handle_irq(airq_iv_get_data(aibv, ai));
- airq_iv_unlock(aibv, ai);
}
}
}
@@ -410,7 +408,7 @@
zdev->aisb = aisb;
/* Create adapter interrupt vector */
- zdev->aibv = airq_iv_create(msi_vecs, AIRQ_IV_DATA | AIRQ_IV_BITLOCK);
+ zdev->aibv = airq_iv_create(msi_vecs, AIRQ_IV_DATA);
if (!zdev->aibv)
return -ENOMEM;
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index 19b2d2a..eeb7450 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -436,7 +436,7 @@
struct clp_state_data sd = {fid, ZPCI_FN_STATE_RESERVED};
int rc;
- rrb = clp_alloc_block(GFP_KERNEL);
+ rrb = clp_alloc_block(GFP_ATOMIC);
if (!rrb)
return -ENOMEM;
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 5e9ebdb..397af07 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1192,20 +1192,7 @@
return rc;
}
-static int dasd_hosts_open(struct inode *inode, struct file *file)
-{
- struct dasd_device *device = inode->i_private;
-
- return single_open(file, dasd_hosts_show, device);
-}
-
-static const struct file_operations dasd_hosts_fops = {
- .owner = THIS_MODULE,
- .open = dasd_hosts_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(dasd_hosts);
static void dasd_hosts_exit(struct dasd_device *device)
{
diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c
index 5cb80c6..1770b99 100644
--- a/drivers/s390/block/dasd_proc.c
+++ b/drivers/s390/block/dasd_proc.c
@@ -339,8 +339,7 @@
dasd_proc_root_entry = proc_mkdir("dasd", NULL);
if (!dasd_proc_root_entry)
goto out_nodasd;
- dasd_devices_entry = proc_create_seq("devices",
- S_IFREG | S_IRUGO | S_IWUSR,
+ dasd_devices_entry = proc_create_seq("devices", 0444,
dasd_proc_root_entry,
&dasd_devices_seq_ops);
if (!dasd_devices_entry)
diff --git a/drivers/s390/char/tape_proc.c b/drivers/s390/char/tape_proc.c
index 32a14ee..2238d9d 100644
--- a/drivers/s390/char/tape_proc.c
+++ b/drivers/s390/char/tape_proc.c
@@ -111,11 +111,8 @@
void
tape_proc_init(void)
{
- tape_proc_devices = proc_create_seq("tapedevices",
- S_IFREG | S_IRUGO | S_IWUSR, NULL, &tape_proc_seq);
- if (tape_proc_devices == NULL) {
- return;
- }
+ tape_proc_devices = proc_create_seq("tapedevices", 0444, NULL,
+ &tape_proc_seq);
}
/*
diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c
index 68a82f3..d2f98e5 100644
--- a/drivers/s390/cio/qdio_debug.c
+++ b/drivers/s390/cio/qdio_debug.c
@@ -190,19 +190,7 @@
return 0;
}
-static int qstat_seq_open(struct inode *inode, struct file *filp)
-{
- return single_open(filp, qstat_show,
- file_inode(filp)->i_private);
-}
-
-static const struct file_operations debugfs_fops = {
- .owner = THIS_MODULE,
- .open = qstat_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(qstat);
static char *qperf_names[] = {
"Assumed adapter interrupts",
@@ -305,8 +293,8 @@
snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%d",
q->is_input_q ? "input" : "output",
q->nr);
- q->debugfs_q = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR,
- q->irq_ptr->debugfs_dev, q, &debugfs_fops);
+ q->debugfs_q = debugfs_create_file(name, 0444,
+ q->irq_ptr->debugfs_dev, q, &qstat_fops);
if (IS_ERR(q->debugfs_q))
q->debugfs_q = NULL;
}
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 9f5a201..48ea000 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -299,7 +299,7 @@
ap_max_domain_id = 15;
switch (*device_type) {
/* For CEX2 and CEX3 the available functions
- * are not refrected by the facilities bits.
+ * are not reflected by the facilities bits.
* Instead it is coded into the type. So here
* modify the function bits based on the type.
*/
@@ -1317,7 +1317,7 @@
}
/*
- * helper function to be used with bus_find_dev
+ * Helper function to be used with bus_find_dev
* matches for the card device with the given id
*/
static int __match_card_device_with_id(struct device *dev, void *data)
@@ -1325,7 +1325,8 @@
return is_card_dev(dev) && to_ap_card(dev)->id == (int)(long) data;
}
-/* helper function to be used with bus_find_dev
+/*
+ * Helper function to be used with bus_find_dev
* matches for the queue device with a given qid
*/
static int __match_queue_device_with_qid(struct device *dev, void *data)
@@ -1333,143 +1334,185 @@
return is_queue_dev(dev) && to_ap_queue(dev)->qid == (int)(long) data;
}
+/*
+ * Helper function for ap_scan_bus().
+ * Does the scan bus job for the given adapter id.
+ */
+static void _ap_scan_bus_adapter(int id)
+{
+ ap_qid_t qid;
+ unsigned int func;
+ struct ap_card *ac;
+ struct device *dev;
+ struct ap_queue *aq;
+ int rc, dom, depth, type, comp_type, borked;
+
+ /* check if there is a card device registered with this id */
+ dev = bus_find_device(&ap_bus_type, NULL,
+ (void *)(long) id,
+ __match_card_device_with_id);
+ ac = dev ? to_ap_card(dev) : NULL;
+ if (!ap_test_config_card_id(id)) {
+ if (dev) {
+ /* Card device has been removed from configuration */
+ bus_for_each_dev(&ap_bus_type, NULL,
+ (void *)(long) id,
+ __ap_queue_devices_with_id_unregister);
+ device_unregister(dev);
+ put_device(dev);
+ }
+ return;
+ }
+
+ /*
+ * This card id is enabled in the configuration. If we already have
+ * a card device with this id, check if type and functions are still
+ * the very same. Also verify that at least one queue is available.
+ */
+ if (ac) {
+ /* find the first valid queue */
+ for (dom = 0; dom < AP_DOMAINS; dom++) {
+ qid = AP_MKQID(id, dom);
+ if (ap_query_queue(qid, &depth, &type, &func) == 0)
+ break;
+ }
+ borked = 0;
+ if (dom >= AP_DOMAINS) {
+ /* no accessible queue on this card */
+ borked = 1;
+ } else if (ac->raw_hwtype != type) {
+ /* card type has changed */
+ AP_DBF(DBF_INFO, "card=%02x type changed.\n", id);
+ borked = 1;
+ } else if (ac->functions != func) {
+ /* card functions have changed */
+ AP_DBF(DBF_INFO, "card=%02x functions changed.\n", id);
+ borked = 1;
+ }
+ if (borked) {
+ /* unregister card device and associated queues */
+ bus_for_each_dev(&ap_bus_type, NULL,
+ (void *)(long) id,
+ __ap_queue_devices_with_id_unregister);
+ device_unregister(dev);
+ put_device(dev);
+ /* go back if there is no valid queue on this card */
+ if (dom >= AP_DOMAINS)
+ return;
+ ac = NULL;
+ }
+ }
+
+ /*
+ * Go through all possible queue ids. Check and maybe create or release
+ * queue devices for this card. If there exists no card device yet,
+ * create a card device also.
+ */
+ for (dom = 0; dom < AP_DOMAINS; dom++) {
+ qid = AP_MKQID(id, dom);
+ dev = bus_find_device(&ap_bus_type, NULL,
+ (void *)(long) qid,
+ __match_queue_device_with_qid);
+ aq = dev ? to_ap_queue(dev) : NULL;
+ if (!ap_test_config_domain(dom)) {
+ if (dev) {
+ /* Queue device exists but has been
+ * removed from configuration.
+ */
+ device_unregister(dev);
+ put_device(dev);
+ }
+ continue;
+ }
+ /* try to fetch infos about this queue */
+ rc = ap_query_queue(qid, &depth, &type, &func);
+ if (dev) {
+ if (rc == -ENODEV)
+ borked = 1;
+ else {
+ spin_lock_bh(&aq->lock);
+ borked = aq->state == AP_STATE_BORKED;
+ spin_unlock_bh(&aq->lock);
+ }
+ if (borked) /* Remove broken device */
+ device_unregister(dev);
+ put_device(dev);
+ continue;
+ }
+ if (rc)
+ continue;
+ /* a new queue device is needed, check out comp type */
+ comp_type = ap_get_compatible_type(qid, type, func);
+ if (!comp_type)
+ continue;
+ /* maybe a card device needs to be created first */
+ if (!ac) {
+ ac = ap_card_create(id, depth, type, comp_type, func);
+ if (!ac)
+ continue;
+ ac->ap_dev.device.bus = &ap_bus_type;
+ ac->ap_dev.device.parent = ap_root_device;
+ dev_set_name(&ac->ap_dev.device, "card%02x", id);
+ /* Register card device with AP bus */
+ rc = device_register(&ac->ap_dev.device);
+ if (rc) {
+ put_device(&ac->ap_dev.device);
+ ac = NULL;
+ break;
+ }
+ /* get it and thus adjust reference counter */
+ get_device(&ac->ap_dev.device);
+ }
+ /* now create the new queue device */
+ aq = ap_queue_create(qid, comp_type);
+ if (!aq)
+ continue;
+ aq->card = ac;
+ aq->ap_dev.device.bus = &ap_bus_type;
+ aq->ap_dev.device.parent = &ac->ap_dev.device;
+ dev_set_name(&aq->ap_dev.device, "%02x.%04x", id, dom);
+ /* Register queue device */
+ rc = device_register(&aq->ap_dev.device);
+ if (rc) {
+ put_device(&aq->ap_dev.device);
+ continue;
+ }
+ } /* end domain loop */
+
+ if (ac)
+ put_device(&ac->ap_dev.device);
+}
+
/**
* ap_scan_bus(): Scan the AP bus for new devices
* Runs periodically, workqueue timer (ap_config_time)
*/
static void ap_scan_bus(struct work_struct *unused)
{
- struct ap_queue *aq;
- struct ap_card *ac;
- struct device *dev;
- ap_qid_t qid;
- int comp_type, depth = 0, type = 0;
- unsigned int func = 0;
- int rc, id, dom, borked, domains, defdomdevs = 0;
+ int id;
AP_DBF(DBF_DEBUG, "%s running\n", __func__);
ap_query_configuration(ap_configuration);
ap_select_domain();
- for (id = 0; id < AP_DEVICES; id++) {
- /* check if device is registered */
- dev = bus_find_device(&ap_bus_type, NULL,
- (void *)(long) id,
- __match_card_device_with_id);
- ac = dev ? to_ap_card(dev) : NULL;
- if (!ap_test_config_card_id(id)) {
- if (dev) {
- /* Card device has been removed from
- * configuration, remove the belonging
- * queue devices.
- */
- bus_for_each_dev(&ap_bus_type, NULL,
- (void *)(long) id,
- __ap_queue_devices_with_id_unregister);
- /* now remove the card device */
- device_unregister(dev);
- put_device(dev);
- }
- continue;
- }
- /* According to the configuration there should be a card
- * device, so check if there is at least one valid queue
- * and maybe create queue devices and the card device.
- */
- domains = 0;
- for (dom = 0; dom < AP_DOMAINS; dom++) {
- qid = AP_MKQID(id, dom);
- dev = bus_find_device(&ap_bus_type, NULL,
- (void *)(long) qid,
- __match_queue_device_with_qid);
- aq = dev ? to_ap_queue(dev) : NULL;
- if (!ap_test_config_domain(dom)) {
- if (dev) {
- /* Queue device exists but has been
- * removed from configuration.
- */
- device_unregister(dev);
- put_device(dev);
- }
- continue;
- }
- rc = ap_query_queue(qid, &depth, &type, &func);
- if (dev) {
- spin_lock_bh(&aq->lock);
- if (rc == -ENODEV ||
- /* adapter reconfiguration */
- (ac && ac->functions != func))
- aq->state = AP_STATE_BORKED;
- borked = aq->state == AP_STATE_BORKED;
- spin_unlock_bh(&aq->lock);
- if (borked) /* Remove broken device */
- device_unregister(dev);
- put_device(dev);
- if (!borked) {
- domains++;
- if (dom == ap_domain_index)
- defdomdevs++;
- continue;
- }
- }
- if (rc)
- continue;
- /* a new queue device is needed, check out comp type */
- comp_type = ap_get_compatible_type(qid, type, func);
- if (!comp_type)
- continue;
- /* maybe a card device needs to be created first */
- if (!ac) {
- ac = ap_card_create(id, depth, type,
- comp_type, func);
- if (!ac)
- continue;
- ac->ap_dev.device.bus = &ap_bus_type;
- ac->ap_dev.device.parent = ap_root_device;
- dev_set_name(&ac->ap_dev.device,
- "card%02x", id);
- /* Register card with AP bus */
- rc = device_register(&ac->ap_dev.device);
- if (rc) {
- put_device(&ac->ap_dev.device);
- ac = NULL;
- break;
- }
- /* get it and thus adjust reference counter */
- get_device(&ac->ap_dev.device);
- }
- /* now create the new queue device */
- aq = ap_queue_create(qid, comp_type);
- if (!aq)
- continue;
- aq->card = ac;
- aq->ap_dev.device.bus = &ap_bus_type;
- aq->ap_dev.device.parent = &ac->ap_dev.device;
- dev_set_name(&aq->ap_dev.device,
- "%02x.%04x", id, dom);
- /* Register device */
- rc = device_register(&aq->ap_dev.device);
- if (rc) {
- put_device(&aq->ap_dev.device);
- continue;
- }
- domains++;
- if (dom == ap_domain_index)
- defdomdevs++;
- } /* end domain loop */
- if (ac) {
- /* remove card dev if there are no queue devices */
- if (!domains)
- device_unregister(&ac->ap_dev.device);
- put_device(&ac->ap_dev.device);
- }
- } /* end device loop */
+ /* loop over all possible adapters */
+ for (id = 0; id < AP_DEVICES; id++)
+ _ap_scan_bus_adapter(id);
- if (ap_domain_index >= 0 && defdomdevs < 1)
- AP_DBF(DBF_INFO,
- "no queue device with default domain %d available\n",
- ap_domain_index);
+ /* check if there is at least one queue available with default domain */
+ if (ap_domain_index >= 0) {
+ struct device *dev =
+ bus_find_device(&ap_bus_type, NULL,
+ (void *)(long) ap_domain_index,
+ __match_queue_device_with_qid);
+ if (dev)
+ put_device(dev);
+ else
+ AP_DBF(DBF_INFO,
+ "no queue device with default domain %d available\n",
+ ap_domain_index);
+ }
mod_timer(&ap_config_timer, jiffies + ap_config_time * HZ);
}
diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c
index 0aa4b3c..576ac08 100644
--- a/drivers/s390/crypto/ap_queue.c
+++ b/drivers/s390/crypto/ap_queue.c
@@ -14,6 +14,9 @@
#include <asm/facility.h>
#include "ap_bus.h"
+#include "ap_debug.h"
+
+static void __ap_flush_queue(struct ap_queue *aq);
/**
* ap_queue_enable_interruption(): Enable interruption on an AP queue.
@@ -541,7 +544,25 @@
return rc;
}
-static DEVICE_ATTR_RO(reset);
+static ssize_t reset_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ap_queue *aq = to_ap_queue(dev);
+
+ spin_lock_bh(&aq->lock);
+ __ap_flush_queue(aq);
+ aq->state = AP_STATE_RESET_START;
+ ap_wait(ap_sm_event(aq, AP_EVENT_POLL));
+ spin_unlock_bh(&aq->lock);
+
+ AP_DBF(DBF_INFO, "reset queue=%02x.%04x triggered by user\n",
+ AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid));
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(reset);
static ssize_t interrupt_show(struct device *dev,
struct device_attribute *attr, char *buf)
