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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /arch/powerpc/perf/hv-24x7.h
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/perf/hv-24x7.h')
-rw-r--r--arch/powerpc/perf/hv-24x7.h160
1 files changed, 160 insertions, 0 deletions
diff --git a/arch/powerpc/perf/hv-24x7.h b/arch/powerpc/perf/hv-24x7.h
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+++ b/arch/powerpc/perf/hv-24x7.h
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+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef LINUX_POWERPC_PERF_HV_24X7_H_
+#define LINUX_POWERPC_PERF_HV_24X7_H_
+
+#include <linux/types.h>
+
+enum hv_perf_domains {
+#define DOMAIN(n, v, x, c) HV_PERF_DOMAIN_##n = v,
+#include "hv-24x7-domains.h"
+#undef DOMAIN
+ HV_PERF_DOMAIN_MAX,
+};
+
+#define H24x7_REQUEST_SIZE(iface_version) (iface_version == 1 ? 16 : 32)
+
+struct hv_24x7_request {
+ /* PHYSICAL domains require enabling via phyp/hmc. */
+ __u8 performance_domain;
+ __u8 reserved[0x1];
+
+ /* bytes to read starting at @data_offset. must be a multiple of 8 */
+ __be16 data_size;
+
+ /*
+ * byte offset within the perf domain to read from. must be 8 byte
+ * aligned
+ */
+ __be32 data_offset;
+
+ /*
+ * only valid for VIRTUAL_PROCESSOR domains, ignored for others.
+ * -1 means "current partition only"
+ * Enabling via phyp/hmc required for non-"-1" values. 0 forbidden
+ * unless requestor is 0.
+ */
+ __be16 starting_lpar_ix;
+
+ /*
+ * Ignored when @starting_lpar_ix == -1
+ * Ignored when @performance_domain is not VIRTUAL_PROCESSOR_*
+ * -1 means "infinite" or all
+ */
+ __be16 max_num_lpars;
+
+ /* chip, core, or virtual processor based on @performance_domain */
+ __be16 starting_ix;
+ __be16 max_ix;
+
+ /* The following fields were added in v2 of the 24x7 interface. */
+
+ __u8 starting_thread_group_ix;
+
+ /* -1 means all thread groups starting at @starting_thread_group_ix */
+ __u8 max_num_thread_groups;
+
+ __u8 reserved2[0xE];
+} __packed;
+
+struct hv_24x7_request_buffer {
+ /* 0 - ? */
+ /* 1 - ? */
+ __u8 interface_version;
+ __u8 num_requests;
+ __u8 reserved[0xE];
+ struct hv_24x7_request requests[];
+} __packed;
+
+struct hv_24x7_result_element_v1 {
+ __be16 lpar_ix;
+
+ /*
+ * represents the core, chip, or virtual processor based on the
+ * request's @performance_domain
+ */
+ __be16 domain_ix;
+
+ /* -1 if @performance_domain does not refer to a virtual processor */
+ __be32 lpar_cfg_instance_id;
+
+ /* size = @result_element_data_size of containing result. */
+ __u64 element_data[];
+} __packed;
+
+/*
+ * We need a separate struct for v2 because the offset of @element_data changed
+ * between versions.
+ */
+struct hv_24x7_result_element_v2 {
+ __be16 lpar_ix;
+
+ /*
+ * represents the core, chip, or virtual processor based on the
+ * request's @performance_domain
+ */
+ __be16 domain_ix;
+
+ /* -1 if @performance_domain does not refer to a virtual processor */
+ __be32 lpar_cfg_instance_id;
+
+ __u8 thread_group_ix;
+
+ __u8 reserved[7];
+
+ /* size = @result_element_data_size of containing result. */
+ __u64 element_data[];
+} __packed;
+
+struct hv_24x7_result {
+ /*
+ * The index of the 24x7 Request Structure in the 24x7 Request Buffer
+ * used to request this result.
+ */
+ __u8 result_ix;
+
+ /*
+ * 0 = not all result elements fit into the buffer, additional requests
+ * required
+ * 1 = all result elements were returned
+ */
+ __u8 results_complete;
+ __be16 num_elements_returned;
+
+ /*
+ * This is a copy of @data_size from the corresponding hv_24x7_request
+ *
+ * Warning: to obtain the size of each element in @elements you have
+ * to add the size of the other members of the result_element struct.
+ */
+ __be16 result_element_data_size;
+ __u8 reserved[0x2];
+
+ /*
+ * Either
+ * struct hv_24x7_result_element_v1[@num_elements_returned]
+ * or
+ * struct hv_24x7_result_element_v2[@num_elements_returned]
+ *
+ * depending on the interface_version field of the
+ * struct hv_24x7_data_result_buffer containing this result.
+ */
+ char elements[];
+} __packed;
+
+struct hv_24x7_data_result_buffer {
+ /* See versioning for request buffer */
+ __u8 interface_version;
+
+ __u8 num_results;
+ __u8 reserved[0x1];
+ __u8 failing_request_ix;
+ __be32 detailed_rc;
+ __be64 cec_cfg_instance_id;
+ __be64 catalog_version_num;
+ __u8 reserved2[0x8];
+ /* WARNING: only valid for the first result due to variable sizes of
+ * results */
+ struct hv_24x7_result results[]; /* [@num_results] */
+} __packed;
+
+#endif