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path: root/drivers/s390/crypto/ap_bus.h
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Diffstat (limited to 'drivers/s390/crypto/ap_bus.h')
-rw-r--r--drivers/s390/crypto/ap_bus.h98
1 files changed, 66 insertions, 32 deletions
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h
index d7fdf5c024d7..4dc7c88fb054 100644
--- a/drivers/s390/crypto/ap_bus.h
+++ b/drivers/s390/crypto/ap_bus.h
@@ -27,7 +27,6 @@
#define _AP_BUS_H_
#include <linux/device.h>
-#include <linux/mod_devicetable.h>
#include <linux/types.h>
#define AP_DEVICES 64 /* Number of AP devices. */
@@ -38,14 +37,17 @@
extern int ap_domain_index;
+extern spinlock_t ap_list_lock;
+extern struct list_head ap_card_list;
+
/**
* The ap_qid_t identifier of an ap queue. It contains a
- * 6 bit device index and a 4 bit queue index (domain).
+ * 6 bit card index and a 4 bit queue index (domain).
*/
typedef unsigned int ap_qid_t;
-#define AP_MKQID(_device, _queue) (((_device) & 63) << 8 | ((_queue) & 255))
-#define AP_QID_DEVICE(_qid) (((_qid) >> 8) & 63)
+#define AP_MKQID(_card, _queue) (((_card) & 63) << 8 | ((_queue) & 255))
+#define AP_QID_CARD(_qid) (((_qid) >> 8) & 63)
#define AP_QID_QUEUE(_qid) ((_qid) & 255)
/**
@@ -55,7 +57,7 @@ typedef unsigned int ap_qid_t;
* @queue_full: Is 1 if the queue is full
* @pad: A 4 bit pad
* @int_enabled: Shows if interrupts are enabled for the AP
- * @response_conde: Holds the 8 bit response code
+ * @response_code: Holds the 8 bit response code
* @pad2: A 16 bit pad
*
* The ap queue status word is returned by all three AP functions
@@ -105,6 +107,7 @@ static inline int ap_test_bit(unsigned int *ptr, unsigned int nr)
#define AP_DEVICE_TYPE_CEX3C 9
#define AP_DEVICE_TYPE_CEX4 10
#define AP_DEVICE_TYPE_CEX5 11
+#define AP_DEVICE_TYPE_CEX6 12
/*
* Known function facilities
@@ -166,7 +169,8 @@ struct ap_driver {
int (*probe)(struct ap_device *);
void (*remove)(struct ap_device *);
- int request_timeout; /* request timeout in jiffies */
+ void (*suspend)(struct ap_device *);
+ void (*resume)(struct ap_device *);
};
#define to_ap_drv(x) container_of((x), struct ap_driver, driver)
@@ -174,38 +178,51 @@ struct ap_driver {
int ap_driver_register(struct ap_driver *, struct module *, char *);
void ap_driver_unregister(struct ap_driver *);
-typedef enum ap_wait (ap_func_t)(struct ap_device *ap_dev);
-
struct ap_device {
struct device device;
struct ap_driver *drv; /* Pointer to AP device driver. */
- spinlock_t lock; /* Per device lock. */
- struct list_head list; /* private list of all AP devices. */
+ int device_type; /* AP device type. */
+};
- enum ap_state state; /* State of the AP device. */
+#define to_ap_dev(x) container_of((x), struct ap_device, device)
- ap_qid_t qid; /* AP queue id. */
- int queue_depth; /* AP queue depth.*/
- int device_type; /* AP device type. */
+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. */
- struct timer_list timeout; /* Timer for request timeouts. */
+ int queue_depth; /* AP queue depth.*/
+ int id; /* AP card number. */
+ atomic_t total_request_count; /* # requests ever for this AP device.*/
+};
+
+#define to_ap_card(x) container_of((x), struct ap_card, ap_dev.device)
+struct ap_queue {
+ struct ap_device ap_dev;
+ struct list_head list; /* Private list of AP queues. */
+ struct ap_card *card; /* Ptr to assoc. AP card. */
+ spinlock_t lock; /* Per device lock. */
+ void *private; /* ap driver private pointer. */
+ ap_qid_t qid; /* AP queue id. */
int interrupt; /* indicate if interrupts are enabled */
int queue_count; /* # messages currently on AP queue. */
-
- struct list_head pendingq; /* List of message sent to AP queue. */
+ enum ap_state state; /* State of the AP device. */
int pendingq_count; /* # requests on pendingq list. */
- struct list_head requestq; /* List of message yet to be sent. */
int requestq_count; /* # requests on requestq list. */
- int total_request_count; /* # requests ever for this AP device. */
-
+ int total_request_count; /* # requests ever for this AP device.*/
+ int request_timeout; /* Request timout in jiffies. */
+ struct timer_list timeout; /* Timer for request timeouts. */
+ struct list_head pendingq; /* List of message sent to AP queue. */
+ struct list_head requestq; /* List of message yet to be sent. */
struct ap_message *reply; /* Per device reply message. */
-
- void *private; /* ap driver private pointer. */
};
-#define to_ap_dev(x) container_of((x), struct ap_device, device)
+#define to_ap_queue(x) container_of((x), struct ap_queue, ap_dev.device)
+
+typedef enum ap_wait (ap_func_t)(struct ap_queue *queue);
struct ap_message {
struct list_head list; /* Request queueing. */
@@ -217,7 +234,7 @@ struct ap_message {
void *private; /* ap driver private pointer. */
unsigned int special:1; /* Used for special commands. */
/* receive is called from tasklet context */
- void (*receive)(struct ap_device *, struct ap_message *,
+ void (*receive)(struct ap_queue *, struct ap_message *,
struct ap_message *);
};
@@ -232,10 +249,6 @@ struct ap_config_info {
unsigned char reserved4[16];
} __packed;
-#define AP_DEVICE(dt) \
- .dev_type=(dt), \
- .match_flags=AP_DEVICE_ID_MATCH_DEVICE_TYPE,
-
/**
* ap_init_message() - Initialize ap_message.
* Initialize a message before using. Otherwise this might result in
@@ -250,6 +263,12 @@ static inline void ap_init_message(struct ap_message *ap_msg)
ap_msg->receive = NULL;
}
+#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
@@ -258,11 +277,26 @@ static inline void ap_init_message(struct ap_message *ap_msg)
int ap_send(ap_qid_t, unsigned long long, void *, size_t);
int ap_recv(ap_qid_t, unsigned long long *, void *, size_t);
-void ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg);
-void ap_cancel_message(struct ap_device *ap_dev, struct ap_message *ap_msg);
-void ap_flush_queue(struct ap_device *ap_dev);
+enum ap_wait ap_sm_event(struct ap_queue *aq, enum ap_event event);
+enum ap_wait ap_sm_event_loop(struct ap_queue *aq, enum ap_event event);
+
+void ap_queue_message(struct ap_queue *aq, struct ap_message *ap_msg);
+void ap_cancel_message(struct ap_queue *aq, struct ap_message *ap_msg);
+void ap_flush_queue(struct ap_queue *aq);
+
+void *ap_airq_ptr(void);
+void ap_wait(enum ap_wait wait);
+void ap_request_timeout(unsigned long data);
void ap_bus_force_rescan(void);
-void ap_device_init_reply(struct ap_device *ap_dev, struct ap_message *ap_msg);
+
+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_remove(struct ap_queue *aq);
+void ap_queue_suspend(struct ap_device *ap_dev);
+void ap_queue_resume(struct ap_device *ap_dev);
+
+struct ap_card *ap_card_create(int id, int queue_depth, int device_type,
+ unsigned int device_functions);
int ap_module_init(void);
void ap_module_exit(void);