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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
a8b2c436 CS |
2 | #ifndef LINUX_POWERPC_PERF_HV_24X7_H_ |
3 | #define LINUX_POWERPC_PERF_HV_24X7_H_ | |
4 | ||
5 | #include <linux/types.h> | |
6 | ||
5c5cd7b5 CS |
7 | enum hv_perf_domains { |
8 | #define DOMAIN(n, v, x, c) HV_PERF_DOMAIN_##n = v, | |
9 | #include "hv-24x7-domains.h" | |
10 | #undef DOMAIN | |
d34171e8 | 11 | HV_PERF_DOMAIN_MAX, |
5c5cd7b5 CS |
12 | }; |
13 | ||
2e6553aa TJB |
14 | #define H24x7_REQUEST_SIZE(iface_version) (iface_version == 1 ? 16 : 32) |
15 | ||
a8b2c436 CS |
16 | struct hv_24x7_request { |
17 | /* PHYSICAL domains require enabling via phyp/hmc. */ | |
a8b2c436 CS |
18 | __u8 performance_domain; |
19 | __u8 reserved[0x1]; | |
20 | ||
21 | /* bytes to read starting at @data_offset. must be a multiple of 8 */ | |
22 | __be16 data_size; | |
23 | ||
24 | /* | |
25 | * byte offset within the perf domain to read from. must be 8 byte | |
26 | * aligned | |
27 | */ | |
28 | __be32 data_offset; | |
29 | ||
30 | /* | |
31 | * only valid for VIRTUAL_PROCESSOR domains, ignored for others. | |
32 | * -1 means "current partition only" | |
33 | * Enabling via phyp/hmc required for non-"-1" values. 0 forbidden | |
34 | * unless requestor is 0. | |
35 | */ | |
36 | __be16 starting_lpar_ix; | |
37 | ||
38 | /* | |
39 | * Ignored when @starting_lpar_ix == -1 | |
40 | * Ignored when @performance_domain is not VIRTUAL_PROCESSOR_* | |
41 | * -1 means "infinite" or all | |
42 | */ | |
43 | __be16 max_num_lpars; | |
44 | ||
45 | /* chip, core, or virtual processor based on @performance_domain */ | |
46 | __be16 starting_ix; | |
47 | __be16 max_ix; | |
2e6553aa TJB |
48 | |
49 | /* The following fields were added in v2 of the 24x7 interface. */ | |
50 | ||
51 | __u8 starting_thread_group_ix; | |
52 | ||
53 | /* -1 means all thread groups starting at @starting_thread_group_ix */ | |
54 | __u8 max_num_thread_groups; | |
55 | ||
56 | __u8 reserved2[0xE]; | |
a8b2c436 CS |
57 | } __packed; |
58 | ||
59 | struct hv_24x7_request_buffer { | |
60 | /* 0 - ? */ | |
61 | /* 1 - ? */ | |
a8b2c436 CS |
62 | __u8 interface_version; |
63 | __u8 num_requests; | |
64 | __u8 reserved[0xE]; | |
2e6553aa TJB |
65 | struct hv_24x7_request requests[]; |
66 | } __packed; | |
67 | ||
68 | struct hv_24x7_result_element_v1 { | |
69 | __be16 lpar_ix; | |
70 | ||
71 | /* | |
72 | * represents the core, chip, or virtual processor based on the | |
73 | * request's @performance_domain | |
74 | */ | |
75 | __be16 domain_ix; | |
76 | ||
77 | /* -1 if @performance_domain does not refer to a virtual processor */ | |
78 | __be32 lpar_cfg_instance_id; | |
79 | ||
80 | /* size = @result_element_data_size of containing result. */ | |
81 | __u64 element_data[]; | |
a8b2c436 CS |
82 | } __packed; |
83 | ||
2e6553aa TJB |
84 | /* |
85 | * We need a separate struct for v2 because the offset of @element_data changed | |
86 | * between versions. | |
87 | */ | |
88 | struct hv_24x7_result_element_v2 { | |
a8b2c436 CS |
89 | __be16 lpar_ix; |
90 | ||
91 | /* | |
92 | * represents the core, chip, or virtual processor based on the | |
93 | * request's @performance_domain | |
94 | */ | |
95 | __be16 domain_ix; | |
96 | ||
97 | /* -1 if @performance_domain does not refer to a virtual processor */ | |
98 | __be32 lpar_cfg_instance_id; | |
99 | ||
2e6553aa TJB |
100 | __u8 thread_group_ix; |
101 | ||
102 | __u8 reserved[7]; | |
103 | ||
027dfac6 | 104 | /* size = @result_element_data_size of containing result. */ |
2e6553aa | 105 | __u64 element_data[]; |
a8b2c436 CS |
106 | } __packed; |
107 | ||
108 | struct hv_24x7_result { | |
ebd4a5a3 TJB |
109 | /* |
110 | * The index of the 24x7 Request Structure in the 24x7 Request Buffer | |
111 | * used to request this result. | |
112 | */ | |
a8b2c436 CS |
113 | __u8 result_ix; |
114 | ||
115 | /* | |
116 | * 0 = not all result elements fit into the buffer, additional requests | |
117 | * required | |
118 | * 1 = all result elements were returned | |
119 | */ | |
120 | __u8 results_complete; | |
121 | __be16 num_elements_returned; | |
122 | ||
ebd4a5a3 TJB |
123 | /* |
124 | * This is a copy of @data_size from the corresponding hv_24x7_request | |
125 | * | |
126 | * Warning: to obtain the size of each element in @elements you have | |
127 | * to add the size of the other members of the result_element struct. | |
128 | */ | |
a8b2c436 CS |
129 | __be16 result_element_data_size; |
130 | __u8 reserved[0x2]; | |
131 | ||
2e6553aa TJB |
132 | /* |
133 | * Either | |
134 | * struct hv_24x7_result_element_v1[@num_elements_returned] | |
135 | * or | |
136 | * struct hv_24x7_result_element_v2[@num_elements_returned] | |
137 | * | |
138 | * depending on the interface_version field of the | |
139 | * struct hv_24x7_data_result_buffer containing this result. | |
140 | */ | |
141 | char elements[]; | |
a8b2c436 CS |
142 | } __packed; |
143 | ||
144 | struct hv_24x7_data_result_buffer { | |
145 | /* See versioning for request buffer */ | |
146 | __u8 interface_version; | |
147 | ||
148 | __u8 num_results; | |
149 | __u8 reserved[0x1]; | |
150 | __u8 failing_request_ix; | |
151 | __be32 detailed_rc; | |
152 | __be64 cec_cfg_instance_id; | |
153 | __be64 catalog_version_num; | |
154 | __u8 reserved2[0x8]; | |
155 | /* WARNING: only valid for the first result due to variable sizes of | |
156 | * results */ | |
2e6553aa | 157 | struct hv_24x7_result results[]; /* [@num_results] */ |
a8b2c436 CS |
158 | } __packed; |
159 | ||
160 | #endif |