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s390/zcrypt: support for extended number of ap domains

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Extends the number of ap domains within the zcrypt device driver up to 256.
AP domains in the range 00..255 will be detected.

Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Ingo Tuchscherer 2014-09-08 13:24:13 +02:00 committed by Martin Schwidefsky
parent 4423028203
commit 170387a887
2 changed files with 15 additions and 5 deletions
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14
drivers/s390/crypto/ap_bus.c
View File

@ -1188,6 +1188,10 @@ static int ap_select_domain(void)
ap_qid_t qid;
int rc, i, j;
/* IF APXA isn't installed, only 16 domains could be defined */
if (!ap_configuration->ap_extended && (ap_domain_index > 15))
return -EINVAL;
/*
* We want to use a single domain. Either the one specified with
* the "domain=" parameter or the domain with the maximum number
@ -1900,9 +1904,15 @@ static void ap_reset_all(void)
{
int i, j;
for (i = 0; i < AP_DOMAINS; i++)
for (j = 0; j < AP_DEVICES; j++)
for (i = 0; i < AP_DOMAINS; i++) {
if (!ap_test_config_domain(i))
continue;
for (j = 0; j < AP_DEVICES; j++) {
if (!ap_test_config_card_id(j))
continue;
ap_reset_queue(AP_MKQID(j, i));
}
}
}
static struct reset_call ap_reset_call = {

6
drivers/s390/crypto/ap_bus.h
View File

@ -31,7 +31,7 @@
#include <linux/types.h>
#define AP_DEVICES 64 /* Number of AP devices. */
#define AP_DOMAINS 16 /* Number of AP domains. */
#define AP_DOMAINS 256 /* Number of AP domains. */
#define AP_MAX_RESET 90 /* Maximum number of resets. */
#define AP_RESET_TIMEOUT (HZ*0.7) /* Time in ticks for reset timeouts. */
#define AP_CONFIG_TIME 30 /* Time in seconds between AP bus rescans. */
@ -45,9 +45,9 @@ extern int ap_domain_index;
*/
typedef unsigned int ap_qid_t;
#define AP_MKQID(_device,_queue) (((_device) & 63) << 8 | ((_queue) & 15))
#define AP_MKQID(_device, _queue) (((_device) & 63) << 8 | ((_queue) & 255))
#define AP_QID_DEVICE(_qid) (((_qid) >> 8) & 63)
#define AP_QID_QUEUE(_qid) ((_qid) & 15)
#define AP_QID_QUEUE(_qid) ((_qid) & 255)
/**
* structy ap_queue_status - Holds the AP queue status.