diff options
| author | Holger Dengler <hd@linux.vnet.ibm.com> | 2012-08-28 16:41:50 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-09-26 15:44:54 +0200 |
| commit | 75014550516b147e5f530b84c71496341e036d6f (patch) | |
| tree | de0993eb3ec2ea2b5ce0953b8a91630685f60fc5 /drivers/s390/crypto/ap_bus.h | |
| parent | 48a8ca03f8fd49a4d0c0c8843d4f5a7008dc2656 (diff) | |
s390/ap: configuration information exploitation
Query AP configuration information. Improve performance of AP bus
scans by skipping AP device probing, if the AP deviec is not
configured.
Reviewed-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>
Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/ap_bus.h')
| -rw-r--r-- | drivers/s390/crypto/ap_bus.h | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index 52d61995af88..5018f66dada5 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -1,5 +1,5 @@ /* - * Copyright IBM Corp. 2006 + * Copyright IBM Corp. 2006, 2012 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> * Martin Schwidefsky <schwidefsky@de.ibm.com> * Ralph Wuerthner <rwuerthn@de.ibm.com> @@ -83,13 +83,12 @@ int ap_queue_status_invalid_test(struct ap_queue_status *status) return !(memcmp(status, &invalid, sizeof(struct ap_queue_status))); } -#define MAX_AP_FACILITY 31 - -static inline int test_ap_facility(unsigned int function, unsigned int nr) +#define AP_MAX_BITS 31 +static inline int ap_test_bit(unsigned int *ptr, unsigned int nr) { - if (nr > MAX_AP_FACILITY) + if (nr > AP_MAX_BITS) return 0; - return function & (unsigned int)(0x80000000 >> nr); + return (*ptr & (0x80000000u >> nr)) != 0; } #define AP_RESPONSE_NORMAL 0x00 @@ -183,6 +182,17 @@ struct ap_message { struct ap_message *); }; +struct ap_config_info { + unsigned int special_command:1; + unsigned int ap_extended:1; + unsigned char reserved1:6; + unsigned char reserved2[15]; + unsigned int apm[8]; /* AP ID mask */ + unsigned int aqm[8]; /* AP queue mask */ + unsigned int adm[8]; /* AP domain mask */ + unsigned char reserved4[16]; +} __packed; + #define AP_DEVICE(dt) \ .dev_type=(dt), \ .match_flags=AP_DEVICE_ID_MATCH_DEVICE_TYPE, |