1/*
2 * CPUMF HW sampler functions and internal structures
3 *
4 *    Copyright IBM Corp. 2010
5 *    Author(s): Heinz Graalfs <graalfs@de.ibm.com>
6 */
7
8#ifndef HWSAMPLER_H_
9#define HWSAMPLER_H_
10
11#include <linux/workqueue.h>
12#include <asm/cpu_mf.h>
13
14struct hws_ssctl_request_block     /* SET SAMPLING CONTROLS req block   */
15{ /* bytes 0 - 7  Bit(s) */
16	unsigned int s:1;           /* 0: maximum buffer indicator       */
17	unsigned int h:1;           /* 1: part. level reserved for VM use*/
18	unsigned long b2_53:52;     /* 2-53: zeros                       */
19	unsigned int es:1;          /* 54: sampling enable control       */
20	unsigned int b55_61:7;      /* 55-61: - zeros                    */
21	unsigned int cs:1;          /* 62: sampling activation control   */
22	unsigned int b63:1;         /* 63: zero                          */
23	unsigned long interval;     /* 8-15: sampling interval           */
24	unsigned long tear;         /* 16-23: TEAR contents              */
25	unsigned long dear;         /* 24-31: DEAR contents              */
26	/* 32-63:                                                        */
27	unsigned long rsvrd1;       /* reserved                          */
28	unsigned long rsvrd2;       /* reserved                          */
29	unsigned long rsvrd3;       /* reserved                          */
30	unsigned long rsvrd4;       /* reserved                          */
31};
32
33struct hws_cpu_buffer {
34	unsigned long first_sdbt;       /* @ of 1st SDB-Table for this CP*/
35	unsigned long worker_entry;
36	unsigned long sample_overflow;  /* taken from SDB ...            */
37	struct hws_qsi_info_block qsi;
38	struct hws_ssctl_request_block ssctl;
39	struct work_struct worker;
40	atomic_t ext_params;
41	unsigned long req_alert;
42	unsigned long loss_of_sample_data;
43	unsigned long invalid_entry_address;
44	unsigned long incorrect_sdbt_entry;
45	unsigned long sample_auth_change_alert;
46	unsigned int finish:1;
47	unsigned int oom:1;
48	unsigned int stop_mode:1;
49};
50
51int hwsampler_setup(void);
52int hwsampler_shutdown(void);
53int hwsampler_allocate(unsigned long sdbt, unsigned long sdb);
54int hwsampler_deallocate(void);
55unsigned long hwsampler_query_min_interval(void);
56unsigned long hwsampler_query_max_interval(void);
57int hwsampler_start_all(unsigned long interval);
58int hwsampler_stop_all(void);
59int hwsampler_deactivate(unsigned int cpu);
60int hwsampler_activate(unsigned int cpu);
61unsigned long hwsampler_get_sample_overflow_count(unsigned int cpu);
62
63#endif /*HWSAMPLER_H_*/
64