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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.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h
index 5246cd8c16a6..3eed1b36c876 100644
--- a/drivers/s390/crypto/ap_bus.h
+++ b/drivers/s390/crypto/ap_bus.h
@@ -20,6 +20,7 @@
#define AP_DEVICES 256 /* Number of AP devices. */
#define AP_DOMAINS 256 /* Number of AP domains. */
+#define AP_IOCTLS 256 /* Number of ioctls. */
#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. */
#define AP_POLL_TIME 1 /* Time in ticks between receive polls. */
@@ -257,6 +258,14 @@ void ap_queue_resume(struct ap_device *ap_dev);
struct ap_card *ap_card_create(int id, int queue_depth, int raw_device_type,
int comp_device_type, unsigned int functions);
+struct ap_perms {
+ unsigned long ioctlm[BITS_TO_LONGS(AP_IOCTLS)];
+ unsigned long apm[BITS_TO_LONGS(AP_DEVICES)];
+ unsigned long aqm[BITS_TO_LONGS(AP_DOMAINS)];
+};
+extern struct ap_perms ap_perms;
+extern struct mutex ap_perms_mutex;
+
/*
* 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
@@ -280,4 +289,20 @@ int ap_owned_by_def_drv(int card, int queue);
int ap_apqn_in_matrix_owned_by_def_drv(unsigned long *apm,
unsigned long *aqm);
+/*
+ * ap_parse_mask_str() - helper function to parse a bitmap string
+ * and clear/set the bits in the bitmap accordingly. The string may be
+ * given as absolute value, a hex string like 0x1F2E3D4C5B6A" simple
+ * overwriting the current content of the bitmap. Or as relative string
+ * like "+1-16,-32,-0x40,+128" where only single bits or ranges of
+ * bits are cleared or set. Distinction is done based on the very
+ * first character which may be '+' or '-' for the relative string
+ * and othewise assume to be an absolute value string. If parsing fails
+ * a negative errno value is returned. All arguments and bitmaps are
+ * big endian order.
+ */
+int ap_parse_mask_str(const char *str,
+ unsigned long *bitmap, int bits,
+ struct mutex *lock);
+
#endif /* _AP_BUS_H_ */