diff options
Diffstat (limited to 'drivers/s390/crypto/ap_bus.h')
| -rw-r--r-- | drivers/s390/crypto/ap_bus.h | 25 |
1 files changed, 14 insertions, 11 deletions
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. |