| 1 | /* |
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| 2 | (C) Copyright IBM Corp. 2008 |
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| 3 | |
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| 4 | All rights reserved. |
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| 5 | |
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| 6 | Redistribution and use in source and binary forms, with or without |
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| 7 | modification, are permitted provided that the following conditions are met: |
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| 8 | |
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| 9 | * Redistributions of source code must retain the above copyright notice, |
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| 10 | this list of conditions and the following disclaimer. |
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| 11 | * Redistributions in binary form must reproduce the above copyright |
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| 12 | notice, this list of conditions and the following disclaimer in the |
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| 13 | documentation and/or other materials provided with the distribution. |
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| 14 | * Neither the name of IBM nor the names of its contributors may be |
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| 15 | used to endorse or promote products derived from this software without |
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| 16 | specific prior written permission. |
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| 17 | |
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| 18 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 19 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 20 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 21 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 22 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 23 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 24 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 25 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 26 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 27 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 28 | POSSIBILITY OF SUCH DAMAGE. |
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| 29 | */ |
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| 30 | |
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| 31 | #ifndef _SPU_TIMER_H_ |
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| 32 | #define _SPU_TIMER_H_ |
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| 33 | |
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| 34 | #ifdef __cplusplus |
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| 35 | extern "C" { |
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| 36 | #endif |
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| 37 | |
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| 38 | #include <stdint.h> |
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| 39 | |
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| 40 | /* Clock services. */ |
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| 41 | extern void spu_clock_start (void); |
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| 42 | extern int spu_clock_stop (void); |
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| 43 | extern uint64_t spu_clock_read (void); |
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| 44 | |
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| 45 | /* Timer services. */ |
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| 46 | extern int spu_timer_alloc (int interval, void (*func) (int)); |
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| 47 | extern int spu_timer_free (int id); |
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| 48 | extern int spu_timer_start (int id); |
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| 49 | extern int spu_timer_stop (int id); |
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| 50 | extern unsigned spu_timebase (void); |
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| 51 | |
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| 52 | /* Interrupt services. */ |
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| 53 | extern void spu_slih_register (unsigned event_mask, |
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| 54 | unsigned (*slih) (unsigned)); |
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| 55 | extern unsigned spu_clock_slih (unsigned event_mask); |
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| 56 | |
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| 57 | /* Number of supported timers. */ |
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| 58 | #define SPU_TIMER_NTIMERS 4 |
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| 59 | |
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| 60 | /* Recommended minimun spu timer interval time from (cat /proc/cpuinfo) |
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| 61 | * QS20 100/14318000 = 6.98 usec |
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| 62 | * QS21/QS22 100/26666666 = 3.75 usec |
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| 63 | * PS3 100/79800000 = 1.25 usec */ |
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| 64 | #define SPU_TIMER_MIN_INTERVAL 100 |
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| 65 | |
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| 66 | /* Clock error codes. */ |
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| 67 | #define SPU_CLOCK_ERR_NOT_RUNNING -2 |
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| 68 | #define SPU_CLOCK_ERR_STILL_RUNNING -3 |
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| 69 | #define SPU_CLOCK_ERR_TIMERS_ACTIVE -4 |
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| 70 | |
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| 71 | /* Timer error codes. */ |
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| 72 | #define SPU_TIMER_ERR_INVALID_PARM -10 |
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| 73 | #define SPU_TIMER_ERR_NONE_FREE -11 |
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| 74 | #define SPU_TIMER_ERR_INVALID_ID -12 |
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| 75 | #define SPU_TIMER_ERR_ACTIVE -13 |
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| 76 | #define SPU_TIMER_ERR_NOT_ACTIVE -14 |
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| 77 | #define SPU_TIMER_ERR_NOCLOCK -15 |
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| 78 | #define SPU_TIMER_ERR_FREE -16 |
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| 79 | #define SPU_TIMER_ERR_NOT_STOPPED -17 |
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| 80 | |
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| 81 | #ifdef __cplusplus |
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| 82 | } |
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| 83 | #endif |
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| 84 | |
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| 85 | #endif |
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