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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Tracepoint definitions for the s390 zcrypt device driver
*
* Copyright IBM Corp. 2016
* Author(s): Harald Freudenberger <[email protected]>
*
* Currently there are two tracepoint events defined here.
* An s390_zcrypt_req request event occurs as soon as the request is
* recognized by the zcrypt ioctl function. This event may act as some kind
* of request-processing-starts-now indication.
* As late as possible within the zcrypt ioctl function there occurs the
* s390_zcrypt_rep event which may act as the point in time where the
* request has been processed by the kernel and the result is about to be
* transferred back to userspace.
* The glue which binds together request and reply event is the ptr
* parameter, which is the local buffer address where the request from
* userspace has been stored by the ioctl function.
*
* The main purpose of this zcrypt tracepoint api is to get some data for
* performance measurements together with information about on which card
* and queue the request has been processed. It is not an ffdc interface as
* there is already code in the zcrypt device driver to serve the s390
* debug feature interface.
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM s390
#if !defined(_TRACE_S390_ZCRYPT_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_S390_ZCRYPT_H
#include <linux/tracepoint.h>
#define TP_ICARSAMODEXPO 0x0001
#define TP_ICARSACRT 0x0002
#define TB_ZSECSENDCPRB 0x0003
#define TP_ZSENDEP11CPRB 0x0004
#define TP_HWRNGCPRB 0x0005
#define show_zcrypt_tp_type(type) \
__print_symbolic(type, \
{ TP_ICARSAMODEXPO, "ICARSAMODEXPO" }, \
{ TP_ICARSACRT, "ICARSACRT" }, \
{ TB_ZSECSENDCPRB, "ZSECSENDCPRB" }, \
{ TP_ZSENDEP11CPRB, "ZSENDEP11CPRB" }, \
{ TP_HWRNGCPRB, "HWRNGCPRB" })
/**
* trace_s390_zcrypt_req - zcrypt request tracepoint function
* @ptr: Address of the local buffer where the request from userspace
* is stored. Can be used as a unique id to relate together
* request and reply.
* @type: One of the TP_ defines above.
*
* Called when a request from userspace is recognised within the ioctl
* function of the zcrypt device driver and may act as an entry
* timestamp.
*/
TRACE_EVENT(s390_zcrypt_req,
TP_PROTO(void *ptr, u32 type),
TP_ARGS(ptr, type),
TP_STRUCT__entry(
__field(void *, ptr)
__field(u32, type)),
TP_fast_assign(
__entry->ptr = ptr;
__entry->type = type;),
TP_printk("ptr=%p type=%s",
__entry->ptr,
show_zcrypt_tp_type(__entry->type))
);
/**
* trace_s390_zcrypt_rep - zcrypt reply tracepoint function
* @ptr: Address of the local buffer where the request from userspace
* is stored. Can be used as a unique id to match together
* request and reply.
* @fc: Function code.
* @rc: The bare returncode as returned by the device driver ioctl
* function.
* @dev: The adapter nr where this request was actually processed.
* @dom: Domain id of the device where this request was processed.
*
* Called upon recognising the reply from the crypto adapter. This
* message may act as the exit timestamp for the request but also
* carries some info about on which adapter the request was processed
* and the returncode from the device driver.
*/
TRACE_EVENT(s390_zcrypt_rep,
TP_PROTO(void *ptr, u32 fc, u32 rc, u16 dev, u16 dom),
TP_ARGS(ptr, fc, rc, dev, dom),
TP_STRUCT__entry(
__field(void *, ptr)
__field(u32, fc)
__field(u32, rc)
__field(u16, device)
__field(u16, domain)),
TP_fast_assign(
__entry->ptr = ptr;
__entry->fc = fc;
__entry->rc = rc;
__entry->device = dev;
__entry->domain = dom;),
TP_printk("ptr=%p fc=0x%04x rc=%d dev=0x%02hx domain=0x%04hx",
__entry->ptr,
(unsigned int) __entry->fc,
(int) __entry->rc,
(unsigned short) __entry->device,
(unsigned short) __entry->domain)
);
#endif /* _TRACE_S390_ZCRYPT_H */
/* This part must be outside protection */
#undef TRACE_INCLUDE_PATH
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_PATH asm/trace
#define TRACE_INCLUDE_FILE zcrypt
#include <trace/define_trace.h>
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