diff options
Diffstat (limited to 'drivers/s390/cio')
-rw-r--r-- | drivers/s390/cio/blacklist.c | 13 | ||||
-rw-r--r-- | drivers/s390/cio/chp.c | 2 | ||||
-rw-r--r-- | drivers/s390/cio/css.c | 252 | ||||
-rw-r--r-- | drivers/s390/cio/css.h | 3 | ||||
-rw-r--r-- | drivers/s390/cio/device.c | 51 | ||||
-rw-r--r-- | drivers/s390/cio/device.h | 2 | ||||
-rw-r--r-- | drivers/s390/cio/device_fsm.c | 35 | ||||
-rw-r--r-- | drivers/s390/cio/idset.c | 22 | ||||
-rw-r--r-- | drivers/s390/cio/idset.h | 2 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_debug.c | 2 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_main.c | 32 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_perf.c | 2 |
12 files changed, 226 insertions, 192 deletions
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c index 6565f027791..7eab9ab9f40 100644 --- a/drivers/s390/cio/blacklist.c +++ b/drivers/s390/cio/blacklist.c @@ -265,13 +265,11 @@ struct ccwdev_iter { static void * cio_ignore_proc_seq_start(struct seq_file *s, loff_t *offset) { - struct ccwdev_iter *iter; + struct ccwdev_iter *iter = s->private; if (*offset >= (__MAX_SUBCHANNEL + 1) * (__MAX_SSID + 1)) return NULL; - iter = kzalloc(sizeof(struct ccwdev_iter), GFP_KERNEL); - if (!iter) - return ERR_PTR(-ENOMEM); + memset(iter, 0, sizeof(*iter)); iter->ssid = *offset / (__MAX_SUBCHANNEL + 1); iter->devno = *offset % (__MAX_SUBCHANNEL + 1); return iter; @@ -280,8 +278,6 @@ cio_ignore_proc_seq_start(struct seq_file *s, loff_t *offset) static void cio_ignore_proc_seq_stop(struct seq_file *s, void *it) { - if (!IS_ERR(it)) - kfree(it); } static void * @@ -378,14 +374,15 @@ static const struct seq_operations cio_ignore_proc_seq_ops = { static int cio_ignore_proc_open(struct inode *inode, struct file *file) { - return seq_open(file, &cio_ignore_proc_seq_ops); + return seq_open_private(file, &cio_ignore_proc_seq_ops, + sizeof(struct ccwdev_iter)); } static const struct file_operations cio_ignore_proc_fops = { .open = cio_ignore_proc_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release, + .release = seq_release_private, .write = cio_ignore_write, }; diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index 40002830d48..8ab51608da5 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -393,7 +393,6 @@ int chp_new(struct chp_id chpid) chp->state = 1; chp->dev.parent = &channel_subsystems[chpid.cssid]->device; chp->dev.release = chp_release; - dev_set_name(&chp->dev, "chp%x.%02x", chpid.cssid, chpid.id); /* Obtain channel path description and fill it in. */ ret = chsc_determine_base_channel_path_desc(chpid, &chp->desc); @@ -411,6 +410,7 @@ int chp_new(struct chp_id chpid) } else { chp->cmg = -1; } + dev_set_name(&chp->dev, "chp%x.%02x", chpid.cssid, chpid.id); /* make it known to the system */ ret = device_register(&chp->dev); diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 393c73c47f8..91c25706fa8 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -31,8 +31,7 @@ #include "chp.h" int css_init_done = 0; -static int need_reprobe = 0; -static int max_ssid = 0; +int max_ssid; struct channel_subsystem *channel_subsystems[__MAX_CSSID + 1]; @@ -315,12 +314,18 @@ int css_probe_device(struct subchannel_id schid) int ret; struct subchannel *sch; - sch = css_alloc_subchannel(schid); - if (IS_ERR(sch)) - return PTR_ERR(sch); + if (cio_is_console(schid)) + sch = cio_get_console_subchannel(); + else { + sch = css_alloc_subchannel(schid); + if (IS_ERR(sch)) + return PTR_ERR(sch); + } ret = css_register_subchannel(sch); - if (ret) - put_device(&sch->dev); + if (ret) { + if (!cio_is_console(schid)) + put_device(&sch->dev); + } return ret; } @@ -409,10 +414,14 @@ static void css_evaluate_subchannel(struct subchannel_id schid, int slow) static struct idset *slow_subchannel_set; static spinlock_t slow_subchannel_lock; +static wait_queue_head_t css_eval_wq; +static atomic_t css_eval_scheduled; static int __init slow_subchannel_init(void) { spin_lock_init(&slow_subchannel_lock); + atomic_set(&css_eval_scheduled, 0); + init_waitqueue_head(&css_eval_wq); slow_subchannel_set = idset_sch_new(); if (!slow_subchannel_set) { CIO_MSG_EVENT(0, "could not allocate slow subchannel set\n"); @@ -468,9 +477,17 @@ static int slow_eval_unknown_fn(struct subchannel_id schid, void *data) static void css_slow_path_func(struct work_struct *unused) { + unsigned long flags; + CIO_TRACE_EVENT(4, "slowpath"); for_each_subchannel_staged(slow_eval_known_fn, slow_eval_unknown_fn, NULL); + spin_lock_irqsave(&slow_subchannel_lock, flags); + if (idset_is_empty(slow_subchannel_set)) { + atomic_set(&css_eval_scheduled, 0); + wake_up(&css_eval_wq); + } + spin_unlock_irqrestore(&slow_subchannel_lock, flags); } static DECLARE_WORK(slow_path_work, css_slow_path_func); @@ -482,6 +499,7 @@ void css_schedule_eval(struct subchannel_id schid) spin_lock_irqsave(&slow_subchannel_lock, flags); idset_sch_add(slow_subchannel_set, schid); + atomic_set(&css_eval_scheduled, 1); queue_work(slow_path_wq, &slow_path_work); spin_unlock_irqrestore(&slow_subchannel_lock, flags); } @@ -492,80 +510,53 @@ void css_schedule_eval_all(void) spin_lock_irqsave(&slow_subchannel_lock, flags); idset_fill(slow_subchannel_set); + atomic_set(&css_eval_scheduled, 1); queue_work(slow_path_wq, &slow_path_work); spin_unlock_irqrestore(&slow_subchannel_lock, flags); } -void css_wait_for_slow_path(void) +static int __unset_registered(struct device *dev, void *data) { - flush_workqueue(slow_path_wq); -} - -/* Reprobe subchannel if unregistered. */ -static int reprobe_subchannel(struct subchannel_id schid, void *data) -{ - int ret; - - CIO_MSG_EVENT(6, "cio: reprobe 0.%x.%04x\n", - schid.ssid, schid.sch_no); - if (need_reprobe) - return -EAGAIN; - - ret = css_probe_device(schid); - switch (ret) { - case 0: - break; - case -ENXIO: - case -ENOMEM: - case -EIO: - /* These should abort looping */ - break; - default: - ret = 0; - } - - return ret; -} + struct idset *set = data; + struct subchannel *sch = to_subchannel(dev); -static void reprobe_after_idle(struct work_struct *unused) -{ - /* Make sure initial subchannel scan is done. */ - wait_event(ccw_device_init_wq, - atomic_read(&ccw_device_init_count) == 0); - if (need_reprobe) - css_schedule_reprobe(); + idset_sch_del(set, sch->schid); + return 0; } -static DECLARE_WORK(reprobe_idle_work, reprobe_after_idle); - -/* Work function used to reprobe all unregistered subchannels. */ -static void reprobe_all(struct work_struct *unused) +void css_schedule_eval_all_unreg(void) { - int ret; - - CIO_MSG_EVENT(4, "reprobe start\n"); + unsigned long flags; + struct idset *unreg_set; - /* Make sure initial subchannel scan is done. */ - if (atomic_read(&ccw_device_init_count) != 0) { - queue_work(ccw_device_work, &reprobe_idle_work); + /* Find unregistered subchannels. */ + unreg_set = idset_sch_new(); + if (!unreg_set) { + /* Fallback. */ + css_schedule_eval_all(); return; } - need_reprobe = 0; - ret = for_each_subchannel_staged(NULL, reprobe_subchannel, NULL); - - CIO_MSG_EVENT(4, "reprobe done (rc=%d, need_reprobe=%d)\n", ret, - need_reprobe); + idset_fill(unreg_set); + bus_for_each_dev(&css_bus_type, NULL, unreg_set, __unset_registered); + /* Apply to slow_subchannel_set. */ + spin_lock_irqsave(&slow_subchannel_lock, flags); + idset_add_set(slow_subchannel_set, unreg_set); + atomic_set(&css_eval_scheduled, 1); + queue_work(slow_path_wq, &slow_path_work); + spin_unlock_irqrestore(&slow_subchannel_lock, flags); + idset_free(unreg_set); } -static DECLARE_WORK(css_reprobe_work, reprobe_all); +void css_wait_for_slow_path(void) +{ + flush_workqueue(slow_path_wq); +} /* Schedule reprobing of all unregistered subchannels. */ void css_schedule_reprobe(void) { - need_reprobe = 1; - queue_work(slow_path_wq, &css_reprobe_work); + css_schedule_eval_all_unreg(); } - EXPORT_SYMBOL_GPL(css_schedule_reprobe); /* @@ -601,49 +592,6 @@ static void css_process_crw(struct crw *crw0, struct crw *crw1, int overflow) css_evaluate_subchannel(mchk_schid, 0); } -static int __init -__init_channel_subsystem(struct subchannel_id schid, void *data) -{ - struct subchannel *sch; - int ret; - - if (cio_is_console(schid)) - sch = cio_get_console_subchannel(); - else { - sch = css_alloc_subchannel(schid); - if (IS_ERR(sch)) - ret = PTR_ERR(sch); - else - ret = 0; - switch (ret) { - case 0: - break; - case -ENOMEM: - panic("Out of memory in init_channel_subsystem\n"); - /* -ENXIO: no more subchannels. */ - case -ENXIO: - return ret; - /* -EIO: this subchannel set not supported. */ - case -EIO: - return ret; - default: - return 0; - } - } - /* - * We register ALL valid subchannels in ioinfo, even those - * that have been present before init_channel_subsystem. - * These subchannels can't have been registered yet (kmalloc - * not working) so we do it now. This is true e.g. for the - * console subchannel. - */ - if (css_register_subchannel(sch)) { - if (!cio_is_console(schid)) - put_device(&sch->dev); - } - return 0; -} - static void __init css_generate_pgid(struct channel_subsystem *css, u32 tod_high) { @@ -854,19 +802,30 @@ static struct notifier_block css_power_notifier = { * The struct subchannel's are created during probing (except for the * static console subchannel). */ -static int __init -init_channel_subsystem (void) +static int __init css_bus_init(void) { int ret, i; ret = chsc_determine_css_characteristics(); if (ret == -ENOMEM) - goto out; /* No need to continue. */ + goto out; ret = chsc_alloc_sei_area(); if (ret) goto out; + /* Try to enable MSS. */ + ret = chsc_enable_facility(CHSC_SDA_OC_MSS); + switch (ret) { + case 0: /* Success. */ + max_ssid = __MAX_SSID; + break; + case -ENOMEM: + goto out; + default: + max_ssid = 0; + } + ret = slow_subchannel_init(); if (ret) goto out; @@ -878,17 +837,6 @@ init_channel_subsystem (void) if ((ret = bus_register(&css_bus_type))) goto out; - /* Try to enable MSS. */ - ret = chsc_enable_facility(CHSC_SDA_OC_MSS); - switch (ret) { - case 0: /* Success. */ - max_ssid = __MAX_SSID; - break; - case -ENOMEM: - goto out_bus; - default: - max_ssid = 0; - } /* Setup css structure. */ for (i = 0; i <= __MAX_CSSID; i++) { struct channel_subsystem *css; @@ -934,7 +882,6 @@ init_channel_subsystem (void) /* Enable default isc for I/O subchannels. */ isc_register(IO_SCH_ISC); - for_each_subchannel(__init_channel_subsystem, NULL); return 0; out_file: if (css_chsc_characteristics.secm) @@ -955,17 +902,76 @@ out_unregister: &dev_attr_cm_enable); device_unregister(&css->device); } -out_bus: bus_unregister(&css_bus_type); out: crw_unregister_handler(CRW_RSC_CSS); chsc_free_sei_area(); - kfree(slow_subchannel_set); + idset_free(slow_subchannel_set); pr_alert("The CSS device driver initialization failed with " "errno=%d\n", ret); return ret; } +static void __init css_bus_cleanup(void) +{ + struct channel_subsystem *css; + int i; + + for (i = 0; i <= __MAX_CSSID; i++) { + css = channel_subsystems[i]; + device_unregister(&css->pseudo_subchannel->dev); + css->pseudo_subchannel = NULL; + if (css_chsc_characteristics.secm) + device_remove_file(&css->device, &dev_attr_cm_enable); + device_unregister(&css->device); + } + bus_unregister(&css_bus_type); + crw_unregister_handler(CRW_RSC_CSS); + chsc_free_sei_area(); + idset_free(slow_subchannel_set); + isc_unregister(IO_SCH_ISC); +} + +static int __init channel_subsystem_init(void) +{ + int ret; + + ret = css_bus_init(); + if (ret) + return ret; + + ret = io_subchannel_init(); + if (ret) + css_bus_cleanup(); + + return ret; +} +subsys_initcall(channel_subsystem_init); + +static int css_settle(struct device_driver *drv, void *unused) +{ + struct css_driver *cssdrv = to_cssdriver(drv); + + if (cssdrv->settle) + cssdrv->settle(); + return 0; +} + +/* + * Wait for the initialization of devices to finish, to make sure we are + * done with our setup if the search for the root device starts. + */ +static int __init channel_subsystem_init_sync(void) +{ + /* Start initial subchannel evaluation. */ + css_schedule_eval_all(); + /* Wait for the evaluation of subchannels to finish. */ + wait_event(css_eval_wq, atomic_read(&css_eval_scheduled) == 0); + /* Wait for the subchannel type specific initialization to finish */ + return bus_for_each_drv(&css_bus_type, NULL, NULL, css_settle); +} +subsys_initcall_sync(channel_subsystem_init_sync); + int sch_is_pseudo_sch(struct subchannel *sch) { return sch == to_css(sch->dev.parent)->pseudo_subchannel; @@ -1135,7 +1141,5 @@ void css_driver_unregister(struct css_driver *cdrv) } EXPORT_SYMBOL_GPL(css_driver_unregister); -subsys_initcall(init_channel_subsystem); - MODULE_LICENSE("GPL"); EXPORT_SYMBOL(css_bus_type); diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h index 9763eeec745..68d6b0bf151 100644 --- a/drivers/s390/cio/css.h +++ b/drivers/s390/cio/css.h @@ -75,6 +75,7 @@ struct chp_link; * @freeze: callback for freezing during hibernation snapshotting * @thaw: undo work done in @freeze * @restore: callback for restoring after hibernation + * @settle: wait for asynchronous work to finish * @name: name of the device driver */ struct css_driver { @@ -92,6 +93,7 @@ struct css_driver { int (*freeze)(struct subchannel *); int (*thaw) (struct subchannel *); int (*restore)(struct subchannel *); + void (*settle)(void); const char *name; }; @@ -109,6 +111,7 @@ extern void css_sch_device_unregister(struct subchannel *); extern int css_probe_device(struct subchannel_id); extern struct subchannel *get_subchannel_by_schid(struct subchannel_id); extern int css_init_done; +extern int max_ssid; int for_each_subchannel_staged(int (*fn_known)(struct subchannel *, void *), int (*fn_unknown)(struct subchannel_id, void *), void *data); diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 6527f3f3449..2490b741e16 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -131,6 +131,10 @@ static void io_subchannel_shutdown(struct subchannel *); static int io_subchannel_sch_event(struct subchannel *, int); static int io_subchannel_chp_event(struct subchannel *, struct chp_link *, int); +static void recovery_func(unsigned long data); +struct workqueue_struct *ccw_device_work; +wait_queue_head_t ccw_device_init_wq; +atomic_t ccw_device_init_count; static struct css_device_id io_subchannel_ids[] = { { .match_flags = 0x1, .type = SUBCHANNEL_TYPE_IO, }, @@ -151,6 +155,13 @@ static int io_subchannel_prepare(struct subchannel *sch) return 0; } +static void io_subchannel_settle(void) +{ + wait_event(ccw_device_init_wq, + atomic_read(&ccw_device_init_count) == 0); + flush_workqueue(ccw_device_work); +} + static struct css_driver io_subchannel_driver = { .owner = THIS_MODULE, .subchannel_type = io_subchannel_ids, @@ -162,16 +173,10 @@ static struct css_driver io_subchannel_driver = { .remove = io_subchannel_remove, .shutdown = io_subchannel_shutdown, .prepare = io_subchannel_prepare, + .settle = io_subchannel_settle, }; -struct workqueue_struct *ccw_device_work; -wait_queue_head_t ccw_device_init_wq; -atomic_t ccw_device_init_count; - -static void recovery_func(unsigned long data); - -static int __init -init_ccw_bus_type (void) +int __init io_subchannel_init(void) { int ret; @@ -181,10 +186,10 @@ init_ccw_bus_type (void) ccw_device_work = create_singlethread_workqueue("cio"); if (!ccw_device_work) - return -ENOMEM; /* FIXME: better errno ? */ + return -ENOMEM; slow_path_wq = create_singlethread_workqueue("kslowcrw"); if (!slow_path_wq) { - ret = -ENOMEM; /* FIXME: better errno ? */ + ret = -ENOMEM; goto out_err; } if ((ret = bus_register (&ccw_bus_type))) @@ -194,9 +199,6 @@ init_ccw_bus_type (void) if (ret) goto out_err; - wait_event(ccw_device_init_wq, - atomic_read(&ccw_device_init_count) == 0); - flush_workqueue(ccw_device_work); return 0; out_err: if (ccw_device_work) @@ -206,16 +208,6 @@ out_err: return ret; } -static void __exit -cleanup_ccw_bus_type (void) -{ - css_driver_unregister(&io_subchannel_driver); - bus_unregister(&ccw_bus_type); - destroy_workqueue(ccw_device_work); -} - -subsys_initcall(init_ccw_bus_type); -module_exit(cleanup_ccw_bus_type); /************************ device handling **************************/ @@ -1258,8 +1250,7 @@ static int io_subchannel_probe(struct subchannel *sch) unsigned long flags; struct ccw_dev_id dev_id; - cdev = sch_get_cdev(sch); - if (cdev) { + if (cio_is_console(sch->schid)) { rc = sysfs_create_group(&sch->dev.kobj, &io_subchannel_attr_group); if (rc) @@ -1268,13 +1259,13 @@ static int io_subchannel_probe(struct subchannel *sch) "0.%x.%04x (rc=%d)\n", sch->schid.ssid, sch->schid.sch_no, rc); /* - * This subchannel already has an associated ccw_device. + * The console subchannel already has an associated ccw_device. * Throw the delayed uevent for the subchannel, register - * the ccw_device and exit. This happens for all early - * devices, e.g. the console. + * the ccw_device and exit. */ dev_set_uevent_suppress(&sch->dev, 0); kobject_uevent(&sch->dev.kobj, KOBJ_ADD); + cdev = sch_get_cdev(sch); cdev->dev.groups = ccwdev_attr_groups; device_initialize(&cdev->dev); ccw_device_register(cdev); @@ -1617,7 +1608,7 @@ int ccw_purge_blacklisted(void) return 0; } -static void device_set_disconnected(struct ccw_device *cdev) +void ccw_device_set_disconnected(struct ccw_device *cdev) { if (!cdev) return; @@ -1713,7 +1704,7 @@ static int io_subchannel_sch_event(struct subchannel *sch, int slow) ccw_device_trigger_reprobe(cdev); break; case DISC: - device_set_disconnected(cdev); + ccw_device_set_disconnected(cdev); break; default: break; diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h index e3975107a57..246c6482842 100644 --- a/drivers/s390/cio/device.h +++ b/drivers/s390/cio/device.h @@ -74,6 +74,7 @@ dev_fsm_final_state(struct ccw_device *cdev) extern struct workqueue_struct *ccw_device_work; extern wait_queue_head_t ccw_device_init_wq; extern atomic_t ccw_device_init_count; +int __init io_subchannel_init(void); void io_subchannel_recog_done(struct ccw_device *cdev); void io_subchannel_init_config(struct subchannel *sch); @@ -124,6 +125,7 @@ int ccw_device_stlck(struct ccw_device *); void ccw_device_trigger_reprobe(struct ccw_device *); void ccw_device_kill_io(struct ccw_device *); int ccw_device_notify(struct ccw_device *, int); +void ccw_device_set_disconnected(struct ccw_device *cdev); void ccw_device_set_notoper(struct ccw_device *cdev); /* qdio needs this. */ diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index e728ce447f6..b9613d7df9e 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -387,19 +387,35 @@ ccw_device_done(struct ccw_device *cdev, int state) cdev->private->state = state; - if (state == DEV_STATE_BOXED) { + switch (state) { + case DEV_STATE_BOXED: CIO_MSG_EVENT(0, "Boxed device %04x on subchannel %04x\n", cdev->private->dev_id.devno, sch->schid.sch_no); if (cdev->online && !ccw_device_notify(cdev, CIO_BOXED)) ccw_device_schedule_sch_unregister(cdev); cdev->private->flags.donotify = 0; - } - if (state == DEV_STATE_NOT_OPER) { + break; + case DEV_STATE_NOT_OPER: CIO_MSG_EVENT(0, "Device %04x gone on subchannel %04x\n", cdev->private->dev_id.devno, sch->schid.sch_no); if (!ccw_device_notify(cdev, CIO_GONE)) ccw_device_schedule_sch_unregister(cdev); + else + ccw_device_set_disconnected(cdev); cdev->private->flags.donotify = 0; + break; + case DEV_STATE_DISCONNECTED: + CIO_MSG_EVENT(0, "Disconnected device %04x on subchannel " + "%04x\n", cdev->private->dev_id.devno, + sch->schid.sch_no); + if (!ccw_device_notify(cdev, CIO_NO_PATH)) + ccw_device_schedule_sch_unregister(cdev); + else + ccw_device_set_disconnected(cdev); + cdev->private->flags.donotify = 0; + break; + default: + break; } if (cdev->private->flags.donotify) { @@ -671,6 +687,10 @@ ccw_device_offline(struct ccw_device *cdev) ccw_device_done(cdev, DEV_STATE_NOT_OPER); return 0; } + if (cdev->private->state == DEV_STATE_BOXED) { + ccw_device_done(cdev, DEV_STATE_BOXED); + return 0; + } if (ccw_device_is_orphan(cdev)) { ccw_device_done(cdev, DEV_STATE_OFFLINE); return 0; @@ -730,11 +750,10 @@ ccw_device_recog_notoper(struct ccw_device *cdev, enum dev_event dev_event) static void ccw_device_generic_notoper(struct ccw_device *cdev, enum dev_event dev_event) { - struct subchannel *sch; - - ccw_device_set_notoper(cdev); - sch = to_subchannel(cdev->dev.parent); - css_schedule_eval(sch->schid); + if (!ccw_device_notify(cdev, CIO_GONE)) + ccw_device_schedule_sch_unregister(cdev); + else + ccw_device_set_disconnected(cdev); } /* diff --git a/drivers/s390/cio/idset.c b/drivers/s390/cio/idset.c index cf8f24a4b5e..4d10981c7cc 100644 --- a/drivers/s390/cio/idset.c +++ b/drivers/s390/cio/idset.c @@ -78,7 +78,7 @@ static inline int idset_get_first(struct idset *set, int *ssid, int *id) struct idset *idset_sch_new(void) { - return idset_new(__MAX_SSID + 1, __MAX_SUBCHANNEL + 1); + return idset_new(max_ssid + 1, __MAX_SUBCHANNEL + 1); } void idset_sch_add(struct idset *set, struct subchannel_id schid) @@ -110,3 +110,23 @@ int idset_sch_get_first(struct idset *set, struct subchannel_id *schid) } return rc; } + +int idset_is_empty(struct idset *set) +{ + int bitnum; + + bitnum = find_first_bit(set->bitmap, set->num_ssid * set->num_id); + if (bitnum >= set->num_ssid * set->num_id) + return 1; + return 0; +} + +void idset_add_set(struct idset *to, struct idset *from) +{ + unsigned long i, len; + + len = min(__BITOPS_WORDS(to->num_ssid * to->num_id), + __BITOPS_WORDS(from->num_ssid * from->num_id)); + for (i = 0; i < len ; i++) + to->bitmap[i] |= from->bitmap[i]; +} diff --git a/drivers/s390/cio/idset.h b/drivers/s390/cio/idset.h index 528065cb502..7543da4529f 100644 --- a/drivers/s390/cio/idset.h +++ b/drivers/s390/cio/idset.h @@ -21,5 +21,7 @@ void idset_sch_add(struct idset *set, struct subchannel_id id); void idset_sch_del(struct idset *set, struct subchannel_id id); int idset_sch_contains(struct idset *set, struct subchannel_id id); int idset_sch_get_first(struct idset *set, struct subchannel_id *id); +int idset_is_empty(struct idset *set); +void idset_add_set(struct idset *to, struct idset *from); #endif /* S390_IDSET_H */ diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index 1b78f639ead..76769978285 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -125,7 +125,7 @@ static int qstat_seq_open(struct inode *inode, struct file *filp) filp->f_path.dentry->d_inode->i_private); } -static struct file_operations debugfs_fops = { +static const struct file_operations debugfs_fops = { .owner = THIS_MODULE, .open = qstat_seq_open, .read = seq_read, diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 9aef402a5f1..4be6e84b959 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -401,7 +401,7 @@ static void announce_buffer_error(struct qdio_q *q, int count) if ((!q->is_input_q && (q->sbal[q->first_to_check]->element[15].flags & 0xff) == 0x10)) { qdio_perf_stat_inc(&perf_stats.outbound_target_full); - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "OUTFULL FTC:%3d", + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "OUTFULL FTC:%02x", q->first_to_check); return; } @@ -418,7 +418,7 @@ static inline void inbound_primed(struct qdio_q *q, int count) { int new; - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in prim: %3d", count); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in prim: %02x", count); /* for QEBSM the ACK was already set by EQBS */ if (is_qebsm(q)) { @@ -455,6 +455,8 @@ static inline void inbound_primed(struct qdio_q *q, int count) count--; if (!count) return; + /* need to change ALL buffers to get more interrupts */ + set_buf_states(q, q->first_to_check, SLSB_P_INPUT_NOT_INIT, count); } static int get_inbound_buffer_frontier(struct qdio_q *q) @@ -545,7 +547,7 @@ static inline int qdio_inbound_q_done(struct qdio_q *q) * has (probably) not moved (see qdio_inbound_processing). */ if (get_usecs() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) { - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%3d", + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%02x", q->first_to_check); return 1; } else @@ -565,11 +567,10 @@ static void qdio_kick_handler(struct qdio_q *q) if (q->is_input_q) { qdio_perf_stat_inc(&perf_stats.inbound_handler); - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kih s:%3d c:%3d", start, count); - } else { - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "koh: nr:%1d", q->nr); - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "s:%3d c:%3d", start, count); - } + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kih s:%02x c:%02x", start, count); + } else + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "koh: s:%02x c:%02x", + start, count); q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr, start, count, q->irq_ptr->int_parm); @@ -633,7 +634,7 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) switch (state) { case SLSB_P_OUTPUT_EMPTY: /* the adapter got it */ - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out empty:%1d %3d", q->nr, count); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out empty:%1d %02x", q->nr, count); atomic_sub(count, &q->nr_buf_used); q->first_to_check = add_buf(q->first_to_check, count); @@ -1481,10 +1482,9 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags, get_buf_state(q, prev_buf(bufnr), &state, 0); if (state != SLSB_CU_OUTPUT_PRIMED) rc = qdio_kick_outbound_q(q); - else { - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "fast-req"); + else qdio_perf_stat_inc(&perf_stats.fast_requeue); - } + out: tasklet_schedule(&q->tasklet); return rc; @@ -1510,12 +1510,8 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags, if (!irq_ptr) return -ENODEV; - if (callflags & QDIO_FLAG_SYNC_INPUT) - DBF_DEV_EVENT(DBF_INFO, irq_ptr, "doQDIO input"); - else - DBF_DEV_EVENT(DBF_INFO, irq_ptr, "doQDIO output"); - DBF_DEV_EVENT(DBF_INFO, irq_ptr, "q:%1d flag:%4x", q_nr, callflags); - DBF_DEV_EVENT(DBF_INFO, irq_ptr, "buf:%2d cnt:%3d", bufnr, count); + DBF_DEV_EVENT(DBF_INFO, irq_ptr, + "do%02x b:%02x c:%02x", callflags, bufnr, count); if (irq_ptr->state != QDIO_IRQ_STATE_ACTIVE) return -EBUSY; diff --git a/drivers/s390/cio/qdio_perf.c b/drivers/s390/cio/qdio_perf.c index eff943923c6..968e3c7c263 100644 --- a/drivers/s390/cio/qdio_perf.c +++ b/drivers/s390/cio/qdio_perf.c @@ -84,7 +84,7 @@ static int qdio_perf_seq_open(struct inode *inode, struct file *filp) return single_open(filp, qdio_perf_proc_show, NULL); } -static struct file_operations qdio_perf_proc_fops = { +static const struct file_operations qdio_perf_proc_fops = { .owner = THIS_MODULE, .open = qdio_perf_seq_open, .read = seq_read, |