diff options
Diffstat (limited to 'drivers/s390')
-rw-r--r-- | drivers/s390/crypto/ap_bus.c | 117 | ||||
-rw-r--r-- | drivers/s390/crypto/ap_bus.h | 5 | ||||
-rw-r--r-- | drivers/s390/crypto/ap_queue.c | 51 | ||||
-rw-r--r-- | drivers/s390/crypto/zcrypt_cex2a.c | 2 | ||||
-rw-r--r-- | drivers/s390/crypto/zcrypt_cex2c.c | 2 | ||||
-rw-r--r-- | drivers/s390/crypto/zcrypt_cex4.c | 2 |
6 files changed, 5 insertions, 174 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index c413211c6116..35064443e748 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -18,13 +18,13 @@ #include <linux/init.h> #include <linux/delay.h> #include <linux/err.h> +#include <linux/freezer.h> #include <linux/interrupt.h> #include <linux/workqueue.h> #include <linux/slab.h> #include <linux/notifier.h> #include <linux/kthread.h> #include <linux/mutex.h> -#include <linux/suspend.h> #include <asm/airq.h> #include <linux/atomic.h> #include <asm/isc.h> @@ -103,16 +103,9 @@ static struct hrtimer ap_poll_timer; */ static unsigned long long poll_timeout = 250000; -/* Suspend flag */ -static int ap_suspend_flag; /* Maximum domain id */ static int ap_max_domain_id; -/* - * Flag to check if domain was set through module parameter domain=. This is - * important when supsend and resume is done in a z/VM environment where the - * domain might change. - */ -static int user_set_domain; + static struct bus_type ap_bus_type; /* Adapter interrupt definitions */ @@ -386,8 +379,6 @@ void ap_request_timeout(struct timer_list *t) { struct ap_queue *aq = from_timer(aq, t, timeout); - if (ap_suspend_flag) - return; spin_lock_bh(&aq->lock); ap_wait(ap_sm_event(aq, AP_EVENT_TIMEOUT)); spin_unlock_bh(&aq->lock); @@ -401,8 +392,7 @@ void ap_request_timeout(struct timer_list *t) */ static enum hrtimer_restart ap_poll_timeout(struct hrtimer *unused) { - if (!ap_suspend_flag) - tasklet_schedule(&ap_tasklet); + tasklet_schedule(&ap_tasklet); return HRTIMER_NORESTART; } @@ -413,8 +403,7 @@ static enum hrtimer_restart ap_poll_timeout(struct hrtimer *unused) static void ap_interrupt_handler(struct airq_struct *airq, bool floating) { inc_irq_stat(IRQIO_APB); - if (!ap_suspend_flag) - tasklet_schedule(&ap_tasklet); + tasklet_schedule(&ap_tasklet); } /** @@ -486,7 +475,7 @@ static int ap_poll_thread(void *data) while (!kthread_should_stop()) { add_wait_queue(&ap_poll_wait, &wait); set_current_state(TASK_INTERRUPTIBLE); - if (ap_suspend_flag || !ap_pending_requests()) { + if (!ap_pending_requests()) { schedule(); try_to_freeze(); } @@ -587,33 +576,6 @@ static int ap_uevent(struct device *dev, struct kobj_uevent_env *env) return retval; } -static void ap_bus_suspend(void) -{ - AP_DBF(DBF_DEBUG, "%s running\n", __func__); - - ap_suspend_flag = 1; - /* - * Disable scanning for devices, thus we do not want to scan - * for them after removing. - */ - flush_work(&ap_scan_work); - tasklet_disable(&ap_tasklet); -} - -static int __ap_card_devices_unregister(struct device *dev, void *dummy) -{ - if (is_card_dev(dev)) - device_unregister(dev); - return 0; -} - -static int __ap_queue_devices_unregister(struct device *dev, void *dummy) -{ - if (is_queue_dev(dev)) - device_unregister(dev); - return 0; -} - static int __ap_queue_devices_with_id_unregister(struct device *dev, void *data) { if (is_queue_dev(dev) && @@ -622,60 +584,6 @@ static int __ap_queue_devices_with_id_unregister(struct device *dev, void *data) return 0; } -static void ap_bus_resume(void) -{ - int rc; - - AP_DBF(DBF_DEBUG, "%s running\n", __func__); - - /* remove all queue devices */ - bus_for_each_dev(&ap_bus_type, NULL, NULL, - __ap_queue_devices_unregister); - /* remove all card devices */ - bus_for_each_dev(&ap_bus_type, NULL, NULL, - __ap_card_devices_unregister); - - /* Reset thin interrupt setting */ - if (ap_interrupts_available() && !ap_using_interrupts()) { - rc = register_adapter_interrupt(&ap_airq); - ap_airq_flag = (rc == 0); - } - if (!ap_interrupts_available() && ap_using_interrupts()) { - unregister_adapter_interrupt(&ap_airq); - ap_airq_flag = 0; - } - /* Reset domain */ - if (!user_set_domain) - ap_domain_index = -1; - /* Get things going again */ - ap_suspend_flag = 0; - if (ap_airq_flag) - xchg(ap_airq.lsi_ptr, 0); - tasklet_enable(&ap_tasklet); - queue_work(system_long_wq, &ap_scan_work); -} - -static int ap_power_event(struct notifier_block *this, unsigned long event, - void *ptr) -{ - switch (event) { - case PM_HIBERNATION_PREPARE: - case PM_SUSPEND_PREPARE: - ap_bus_suspend(); - break; - case PM_POST_HIBERNATION: - case PM_POST_SUSPEND: - ap_bus_resume(); - break; - default: - break; - } - return NOTIFY_DONE; -} -static struct notifier_block ap_power_notifier = { - .notifier_call = ap_power_event, -}; - static struct bus_type ap_bus_type = { .name = "ap", .match = &ap_bus_match, @@ -852,8 +760,6 @@ EXPORT_SYMBOL(ap_driver_unregister); void ap_bus_force_rescan(void) { - if (ap_suspend_flag) - return; /* processing a asynchronous bus rescan */ del_timer(&ap_config_timer); queue_work(system_long_wq, &ap_scan_work); @@ -1546,8 +1452,6 @@ static void ap_scan_bus(struct work_struct *unused) static void ap_config_timeout(struct timer_list *unused) { - if (ap_suspend_flag) - return; queue_work(system_long_wq, &ap_scan_work); } @@ -1620,11 +1524,6 @@ static int __init ap_module_init(void) ap_domain_index); ap_domain_index = -1; } - /* In resume callback we need to know if the user had set the domain. - * If so, we can not just reset it. - */ - if (ap_domain_index >= 0) - user_set_domain = 1; if (ap_interrupts_available()) { rc = register_adapter_interrupt(&ap_airq); @@ -1667,17 +1566,11 @@ static int __init ap_module_init(void) goto out_work; } - rc = register_pm_notifier(&ap_power_notifier); - if (rc) - goto out_pm; - queue_work(system_long_wq, &ap_scan_work); initialised = true; return 0; -out_pm: - ap_poll_thread_stop(); out_work: hrtimer_cancel(&ap_poll_timer); root_device_unregister(ap_root_device); diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index 4348fdff1c61..8e8e37b6c0ee 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -91,7 +91,6 @@ enum ap_state { AP_STATE_IDLE, AP_STATE_WORKING, AP_STATE_QUEUE_FULL, - AP_STATE_SUSPEND_WAIT, AP_STATE_REMOVE, /* about to be removed from driver */ AP_STATE_UNBOUND, /* momentary not bound to a driver */ AP_STATE_BORKED, /* broken */ @@ -136,8 +135,6 @@ struct ap_driver { int (*probe)(struct ap_device *); void (*remove)(struct ap_device *); - void (*suspend)(struct ap_device *); - void (*resume)(struct ap_device *); }; #define to_ap_drv(x) container_of((x), struct ap_driver, driver) @@ -259,8 +256,6 @@ void ap_queue_init_reply(struct ap_queue *aq, struct ap_message *ap_msg); struct ap_queue *ap_queue_create(ap_qid_t qid, int device_type); void ap_queue_prepare_remove(struct ap_queue *aq); void ap_queue_remove(struct ap_queue *aq); -void ap_queue_suspend(struct ap_device *ap_dev); -void ap_queue_resume(struct ap_device *ap_dev); void ap_queue_init_state(struct ap_queue *aq); struct ap_card *ap_card_create(int id, int queue_depth, int raw_device_type, diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c index 9cb997cffa61..0eaf1d04e8df 100644 --- a/drivers/s390/crypto/ap_queue.c +++ b/drivers/s390/crypto/ap_queue.c @@ -201,31 +201,6 @@ static enum ap_wait ap_sm_read(struct ap_queue *aq) } /** - * ap_sm_suspend_read(): Receive pending reply messages from an AP queue - * without changing the device state in between. In suspend mode we don't - * allow sending new requests, therefore just fetch pending replies. - * @aq: pointer to the AP queue - * - * Returns AP_WAIT_NONE or AP_WAIT_AGAIN - */ -static enum ap_wait ap_sm_suspend_read(struct ap_queue *aq) -{ - struct ap_queue_status status; - - if (!aq->reply) - return AP_WAIT_NONE; - status = ap_sm_recv(aq); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - if (aq->queue_count > 0) - return AP_WAIT_AGAIN; - fallthrough; - default: - return AP_WAIT_NONE; - } -} - -/** * ap_sm_write(): Send messages from the request queue to an AP queue. * @aq: pointer to the AP queue * @@ -417,10 +392,6 @@ static ap_func_t *ap_jumptable[NR_AP_STATES][NR_AP_EVENTS] = { [AP_EVENT_POLL] = ap_sm_read, [AP_EVENT_TIMEOUT] = ap_sm_reset, }, - [AP_STATE_SUSPEND_WAIT] = { - [AP_EVENT_POLL] = ap_sm_suspend_read, - [AP_EVENT_TIMEOUT] = ap_sm_nop, - }, [AP_STATE_REMOVE] = { [AP_EVENT_POLL] = ap_sm_nop, [AP_EVENT_TIMEOUT] = ap_sm_nop, @@ -450,28 +421,6 @@ enum ap_wait ap_sm_event_loop(struct ap_queue *aq, enum ap_event event) } /* - * Power management for queue devices - */ -void ap_queue_suspend(struct ap_device *ap_dev) -{ - struct ap_queue *aq = to_ap_queue(&ap_dev->device); - - /* Poll on the device until all requests are finished. */ - spin_lock_bh(&aq->lock); - aq->state = AP_STATE_SUSPEND_WAIT; - while (ap_sm_event(aq, AP_EVENT_POLL) != AP_WAIT_NONE) - ; - aq->state = AP_STATE_BORKED; - spin_unlock_bh(&aq->lock); -} -EXPORT_SYMBOL(ap_queue_suspend); - -void ap_queue_resume(struct ap_device *ap_dev) -{ -} -EXPORT_SYMBOL(ap_queue_resume); - -/* * AP queue related attributes. */ static ssize_t request_count_show(struct device *dev, diff --git a/drivers/s390/crypto/zcrypt_cex2a.c b/drivers/s390/crypto/zcrypt_cex2a.c index 7cbb384ec535..b447f3e9e4a2 100644 --- a/drivers/s390/crypto/zcrypt_cex2a.c +++ b/drivers/s390/crypto/zcrypt_cex2a.c @@ -204,8 +204,6 @@ static void zcrypt_cex2a_queue_remove(struct ap_device *ap_dev) static struct ap_driver zcrypt_cex2a_queue_driver = { .probe = zcrypt_cex2a_queue_probe, .remove = zcrypt_cex2a_queue_remove, - .suspend = ap_queue_suspend, - .resume = ap_queue_resume, .ids = zcrypt_cex2a_queue_ids, .flags = AP_DRIVER_FLAG_DEFAULT, }; diff --git a/drivers/s390/crypto/zcrypt_cex2c.c b/drivers/s390/crypto/zcrypt_cex2c.c index c78c0d119806..266440168bb7 100644 --- a/drivers/s390/crypto/zcrypt_cex2c.c +++ b/drivers/s390/crypto/zcrypt_cex2c.c @@ -260,8 +260,6 @@ static void zcrypt_cex2c_queue_remove(struct ap_device *ap_dev) static struct ap_driver zcrypt_cex2c_queue_driver = { .probe = zcrypt_cex2c_queue_probe, .remove = zcrypt_cex2c_queue_remove, - .suspend = ap_queue_suspend, - .resume = ap_queue_resume, .ids = zcrypt_cex2c_queue_ids, .flags = AP_DRIVER_FLAG_DEFAULT, }; diff --git a/drivers/s390/crypto/zcrypt_cex4.c b/drivers/s390/crypto/zcrypt_cex4.c index 8cfb1e2e9e1b..cdaa8348ad04 100644 --- a/drivers/s390/crypto/zcrypt_cex4.c +++ b/drivers/s390/crypto/zcrypt_cex4.c @@ -656,8 +656,6 @@ static void zcrypt_cex4_queue_remove(struct ap_device *ap_dev) static struct ap_driver zcrypt_cex4_queue_driver = { .probe = zcrypt_cex4_queue_probe, .remove = zcrypt_cex4_queue_remove, - .suspend = ap_queue_suspend, - .resume = ap_queue_resume, .ids = zcrypt_cex4_queue_ids, .flags = AP_DRIVER_FLAG_DEFAULT, }; |