| 1 | /* |
| 2 | * arch/ubicom32/mach-common/profile.h |
| 3 | * Private data for the profile module |
| 4 | * |
| 5 | * (C) Copyright 2009, Ubicom, Inc. |
| 6 | * |
| 7 | * This file is part of the Ubicom32 Linux Kernel Port. |
| 8 | * |
| 9 | * The Ubicom32 Linux Kernel Port is free software: you can redistribute |
| 10 | * it and/or modify it under the terms of the GNU General Public License |
| 11 | * as published by the Free Software Foundation, either version 2 of the |
| 12 | * License, or (at your option) any later version. |
| 13 | * |
| 14 | * The Ubicom32 Linux Kernel Port is distributed in the hope that it |
| 15 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 16 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with the Ubicom32 Linux Kernel Port. If not, |
| 21 | * see <http://www.gnu.org/licenses/>. |
| 22 | * |
| 23 | * Ubicom32 implementation derived from (with many thanks): |
| 24 | * arch/m68knommu |
| 25 | * arch/blackfin |
| 26 | * arch/parisc |
| 27 | */ |
| 28 | |
| 29 | #include <linux/types.h> |
| 30 | #include <asm/devtree.h> |
| 31 | #include "profpkt.h" |
| 32 | |
| 33 | #ifndef _PROFILE_H_ |
| 34 | #define _PROFILE_H_ |
| 35 | |
| 36 | #define PROFILE_MAX_THREADS 16 |
| 37 | #define PROFILE_MAX_SAMPLES 1024 |
| 38 | |
| 39 | struct profile_sample; |
| 40 | struct oprofile_sample; |
| 41 | |
| 42 | /* |
| 43 | * values chosen so all counter values fit in a single UDP packet |
| 44 | */ |
| 45 | #define PROFILE_NODE_MAX_COUNTERS 32 |
| 46 | |
| 47 | struct profile_counter { |
| 48 | char name[PROFILE_COUNTER_NAME_LENGTH]; |
| 49 | unsigned int value; |
| 50 | }; |
| 51 | |
| 52 | struct profilenode { |
| 53 | struct devtree_node dn; |
| 54 | volatile u32_t enabled; /* Is the profiler enabled to take samples? */ |
| 55 | volatile u32_t busy; /* set when the samples are being read by the driver */ |
| 56 | volatile u32_t rate; /* What is the sampling rate? */ |
| 57 | volatile u32_t enabled_threads; /* which threads were enabled at the last sample time */ |
| 58 | volatile u32_t hrt; /* HRT threads */ |
| 59 | volatile u32_t profiler_thread; /* thread running the profile sampler */ |
| 60 | volatile u32_t clocks; /* system clock timer at last sample */ |
| 61 | volatile u32_t clock_freq; /* clock frequency in Hz */ |
| 62 | volatile u32_t ddr_freq; /* memory frequency */ |
| 63 | volatile u32_t cpu_id; /* chip_id register */ |
| 64 | volatile u32_t inst_count[PROFILE_MAX_THREADS]; /* sampled instruction counts at most recent sample */ |
| 65 | volatile u32_t stats[4]; /* contents of the cache statistics counters */ |
| 66 | volatile u16_t head; /* sample taker puts samples here */ |
| 67 | volatile u16_t tail; /* packet filler takes samples here */ |
| 68 | volatile u16_t count; /* number of valid samples */ |
| 69 | volatile u16_t max_samples; /* how many samples can be in the samples array */ |
| 70 | struct profile_sample *samples; /* samples array allocated by the linux driver */ |
| 71 | volatile u32_t num_counters; /* how many registered performance counters */ |
| 72 | volatile struct profile_counter counters[PROFILE_NODE_MAX_COUNTERS]; |
| 73 | |
| 74 | /* unimplemented interface for future oprofile work */ |
| 75 | volatile u16_t oprofile_head; /* sample taker puts samples here */ |
| 76 | volatile u16_t oprofile_tail; /* packet filler takes samples here */ |
| 77 | volatile u16_t oprofile_count; /* how many oprofile sampels are are in use */ |
| 78 | volatile u16_t oprofile_max_samples; /* samples array size for oprofile samples */ |
| 79 | struct oprofile_sample *oprofile_samples; /* oprofile sample buffer */ |
| 80 | }; |
| 81 | |
| 82 | #endif |
| 83 | |
