1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef LINUX_POWERPC_PERF_HV_COMMON_H_
3 #define LINUX_POWERPC_PERF_HV_COMMON_H_
4 
5 #include <linux/perf_event.h>
6 #include <linux/types.h>
7 
8 struct hv_perf_caps {
9 	u16 version;
10 	u16 collect_privileged:1,
11 	    ga:1,
12 	    expanded:1,
13 	    lab:1,
14 	    unused:12;
15 };
16 
17 unsigned long hv_perf_caps_get(struct hv_perf_caps *caps);
18 
19 
20 #define EVENT_DEFINE_RANGE_FORMAT(name, attr_var, bit_start, bit_end)	\
21 PMU_FORMAT_ATTR(name, #attr_var ":" #bit_start "-" #bit_end);		\
22 EVENT_DEFINE_RANGE(name, attr_var, bit_start, bit_end)
23 
24 /*
25  * The EVENT_DEFINE_RANGE_FORMAT() macro above includes helper functions
26  * for the fields (eg: event_get_starting_index()). For some fields we
27  * need the bit-range definition, but no the helper functions. Define a
28  * lite version of the above macro without the helpers and silence
29  * compiler warnings unused static functions.
30  */
31 #define EVENT_DEFINE_RANGE_FORMAT_LITE(name, attr_var, bit_start, bit_end) \
32 PMU_FORMAT_ATTR(name, #attr_var ":" #bit_start "-" #bit_end);
33 
34 #define EVENT_DEFINE_RANGE(name, attr_var, bit_start, bit_end)	\
35 static u64 event_get_##name##_max(void)					\
36 {									\
37 	BUILD_BUG_ON((bit_start > bit_end)				\
38 		    || (bit_end >= (sizeof(1ull) * 8)));		\
39 	return (((1ull << (bit_end - bit_start)) - 1) << 1) + 1;	\
40 }									\
41 static u64 event_get_##name(struct perf_event *event)			\
42 {									\
43 	return (event->attr.attr_var >> (bit_start)) &			\
44 		event_get_##name##_max();				\
45 }
46 
47 #endif
48