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[S390] zcrypt: Use of Thin Interrupts

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When the machine supports AP adapter interrupts polling will be
switched off at module initialization and the driver will work in
interrupt mode.

Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Felix Beck
2008-12-25 13:38:41 +01:00
committed by Martin Schwidefsky
parent 320c04c068
commit cb17a6364a
3 changed files with 177 additions and 4 deletions
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6
drivers/s390/crypto/ap_bus.h
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@@ -5,6 +5,7 @@
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
* Martin Schwidefsky <schwidefsky@de.ibm.com>
* Ralph Wuerthner <rwuerthn@de.ibm.com>
* Felix Beck <felix.beck@de.ibm.com>
*
* Adjunct processor bus header file.
*
@@ -67,7 +68,8 @@ struct ap_queue_status {
unsigned int queue_empty : 1;
unsigned int replies_waiting : 1;
unsigned int queue_full : 1;
unsigned int pad1 : 5;
unsigned int pad1 : 4;
unsigned int int_enabled : 1;
unsigned int response_code : 8;
unsigned int pad2 : 16;
};
@@ -78,6 +80,8 @@ struct ap_queue_status {
#define AP_RESPONSE_DECONFIGURED 0x03
#define AP_RESPONSE_CHECKSTOPPED 0x04
#define AP_RESPONSE_BUSY 0x05
#define AP_RESPONSE_INVALID_ADDRESS 0x06
#define AP_RESPONSE_OTHERWISE_CHANGED 0x07
#define AP_RESPONSE_Q_FULL 0x10
#define AP_RESPONSE_NO_PENDING_REPLY 0x10
#define AP_RESPONSE_INDEX_TOO_BIG 0x11