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 14 struct 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 33 struct 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 51 int hwsampler_setup(void); 52 int hwsampler_shutdown(void); 53 int hwsampler_allocate(unsigned long sdbt, unsigned long sdb); 54 int hwsampler_deallocate(void); 55 unsigned long hwsampler_query_min_interval(void); 56 unsigned long hwsampler_query_max_interval(void); 57 int hwsampler_start_all(unsigned long interval); 58 int hwsampler_stop_all(void); 59 int hwsampler_deactivate(unsigned int cpu); 60 int hwsampler_activate(unsigned int cpu); 61 unsigned long hwsampler_get_sample_overflow_count(unsigned int cpu); 62 63 #endif /*HWSAMPLER_H_*/ 64