arch/powerpc/include/asm/perf_event_fsl_emb.h

   1 /*
   2  * Performance event support - Freescale embedded specific definitions.
   3  *
   4  * Copyright 2008-2009 Paul Mackerras, IBM Corporation.
   5  * Copyright 2010 Freescale Semiconductor, Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version
  10  * 2 of the License, or (at your option) any later version.
  11  */
  12
  13 #include <linux/types.h>
  14 #include <asm/hw_irq.h>
  15
  16 #define MAX_HWEVENTS 4
  17
  18 /* event flags */
  19 #define FSL_EMB_EVENT_VALID      1
  20 #define FSL_EMB_EVENT_RESTRICTED 2
  21
  22 /* upper half of event flags is PMLCb */
  23 #define FSL_EMB_EVENT_THRESHMUL  0x0000070000000000ULL
  24 #define FSL_EMB_EVENT_THRESH     0x0000003f00000000ULL
  25
  26 struct fsl_emb_pmu {
  27         const char      *name;
  28         int             n_counter; /* total number of counters */
  29
  30         /*
  31          * The number of contiguous counters starting at zero that
  32          * can hold restricted events, or zero if there are no
  33          * restricted events.
  34          *
  35          * This isn't a very flexible method of expressing constraints,
  36          * but it's very simple and is adequate for existing chips.
  37          */
  38         int             n_restricted;
  39
  40         /* Returns event flags and PMLCb (FSL_EMB_EVENT_*) */
  41         u64             (*xlate_event)(u64 event_id);
  42
  43         int             n_generic;
  44         int             *generic_events;
  45         int             (*cache_events)[PERF_COUNT_HW_CACHE_MAX]
  46                                [PERF_COUNT_HW_CACHE_OP_MAX]
  47                                [PERF_COUNT_HW_CACHE_RESULT_MAX];
  48 };
  49
  50 int register_fsl_emb_pmu(struct fsl_emb_pmu *);