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authorIngo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>2016-08-25 11:19:58 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2016-12-14 16:33:38 +0100
commitb886a9d1560d6c7d5d58344b16f53ab2cba5b666 (patch)
tree49612dac289350bbdb0e4e2e9253ec15d413ae65 /arch/s390
parente28d2af43614eb86f59812e7221735fc221bbc10 (diff)
downloadlinux-b886a9d1560d6c7d5d58344b16f53ab2cba5b666.tar.bz2
s390/zcrypt: Introduce new zcrypt device status API
Introduce new ioctl (ZDEVICESTATUS) to provide detailed information, like hardware type, domains, status and functionality of available crypto devices. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/uapi/asm/zcrypt.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/zcrypt.h b/arch/s390/include/uapi/asm/zcrypt.h
index f2b18eacaca8..a777f87ef889 100644
--- a/arch/s390/include/uapi/asm/zcrypt.h
+++ b/arch/s390/include/uapi/asm/zcrypt.h
@@ -215,6 +215,42 @@ struct ep11_urb {
uint64_t resp;
} __attribute__((packed));
+/**
+ * struct zcrypt_device_status
+ * @hwtype: raw hardware type
+ * @qid: 6 bit device index, 8 bit domain
+ * @functions: AP device function bit field 'abcdef'
+ * a, b, c = reserved
+ * d = CCA coprocessor
+ * e = Accelerator
+ * f = EP11 coprocessor
+ * @online online status
+ * @reserved reserved
+ */
+struct zcrypt_device_status {
+ unsigned int hwtype:8;
+ unsigned int qid:14;
+ unsigned int online:1;
+ unsigned int functions:6;
+ unsigned int reserved:3;
+};
+
+#define MAX_ZDEV_CARDIDS 64
+#define MAX_ZDEV_DOMAINS 256
+
+/**
+ * Maximum number of zcrypt devices
+ */
+#define MAX_ZDEV_ENTRIES (MAX_ZDEV_CARDIDS * MAX_ZDEV_DOMAINS)
+
+/**
+ * zcrypt_device_matrix
+ * Device matrix of all zcrypt devices
+ */
+struct zcrypt_device_matrix {
+ struct zcrypt_device_status device[MAX_ZDEV_ENTRIES];
+};
+
#define AUTOSELECT ((unsigned int)0xFFFFFFFF)
#define ZCRYPT_IOCTL_MAGIC 'z'
@@ -321,6 +357,7 @@ struct ep11_urb {
#define ICARSACRT _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x06, 0)
#define ZSECSENDCPRB _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x81, 0)
#define ZSENDEP11CPRB _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x04, 0)
+#define ZDEVICESTATUS _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x4f, 0)
/* New status calls */
#define Z90STAT_TOTALCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x40, int)