[444] | 1 | /* |
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| 2 | * Copyright (c) 2011 Aeroflex Gaisler |
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| 3 | * |
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| 4 | * BSD license: |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 7 | * of this software and associated documentation files (the "Software"), to deal |
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| 8 | * in the Software without restriction, including without limitation the rights |
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| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 10 | * copies of the Software, and to permit persons to whom the Software is |
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| 11 | * furnished to do so, subject to the following conditions: |
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| 12 | * |
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| 13 | * The above copyright notice and this permission notice shall be included in |
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| 14 | * all copies or substantial portions of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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| 22 | * THE SOFTWARE. |
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| 23 | */ |
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| 24 | |
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| 25 | |
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| 26 | #include <sys/types.h> |
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| 27 | #include <sys/time.h> |
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| 28 | #include <sys/errno.h> |
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| 29 | #include <asm-leon/leon.h> |
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| 30 | #include <asm-leon/irq.h> |
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| 31 | #include <asm-leon/timer.h> |
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| 32 | #include <asm-leon/leoncompat.h> |
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| 33 | |
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| 34 | // ''''''''''''''''''''''''''''''''''''''''''''''''''''' |
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| 35 | |
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| 36 | TAILQ_HEAD (timer_queue, timerevent) timers = TAILQ_HEAD_INITIALIZER (timers); |
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| 37 | |
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| 38 | int |
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| 39 | addtimer (struct timerevent *e) |
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| 40 | { |
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| 41 | struct timerevent *next; |
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| 42 | unsigned long old = leonbare_disable_traps (); |
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| 43 | TAILQ_FOREACH (next, &timers, n) |
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| 44 | { |
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| 45 | if (!GT_TIMESPEC (e->expire, next->expire)) |
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| 46 | break; |
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| 47 | } |
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| 48 | if (next) |
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| 49 | { |
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| 50 | TAILQ_INSERT_BEFORE (next, e, n); |
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| 51 | } |
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| 52 | else |
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| 53 | { |
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| 54 | TAILQ_INSERT_TAIL (&timers, e, n); |
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| 55 | } |
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| 56 | leonbare_enable_traps (old); |
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| 57 | } |
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| 58 | |
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| 59 | extern unsigned long noalarm; |
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| 60 | void |
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| 61 | settimer () |
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| 62 | { |
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| 63 | struct timeval tv, te; |
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| 64 | struct timerevent *e = TAILQ_FIRST (&timers), *n; |
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| 65 | while (e) |
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| 66 | { |
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| 67 | n = TAILQ_NEXT (e, n); |
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| 68 | te.tv_sec = e->expire.tv_sec; |
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| 69 | te.tv_usec = e->expire.tv_nsec / NSEC_PER_USEC; |
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| 70 | do_gettimeofday (&tv); |
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| 71 | if (GT_TIMEVAL (te, tv)) |
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| 72 | { |
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| 73 | MINUS_TIMEVAL (te, te, tv); |
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| 74 | if (!tv.tv_sec || te.tv_usec <= tick_usec) |
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| 75 | { |
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| 76 | if (!noalarm) |
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| 77 | { |
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| 78 | //--------------------- |
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| 79 | switch (LEONCOMPAT_VERSION) |
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| 80 | { |
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| 81 | case 3: |
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| 82 | default: |
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| 83 | LEON3_GpTimer_Regs->e[1].val = 0; |
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| 84 | LEON3_GpTimer_Regs->e[1].rld = te.tv_usec - 1; |
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| 85 | LEON3_GpTimer_Regs->e[1].ctrl = 0; |
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| 86 | LEON3_GpTimer_Regs->e[1].ctrl = |
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| 87 | LEON3_GPTIMER_EN | |
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| 88 | LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN; |
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| 89 | break; |
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| 90 | } |
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| 91 | } |
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| 92 | //--------------------- |
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| 93 | } |
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| 94 | } |
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| 95 | else |
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| 96 | { |
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| 97 | unsigned long old = leonbare_disable_traps (); |
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| 98 | TAILQ_REMOVE (&timers, e, n); |
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| 99 | e->handler (e->arg); |
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| 100 | leonbare_enable_traps (old); |
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| 101 | } |
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| 102 | e = n; |
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| 103 | } |
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| 104 | } |
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| 105 | |
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| 106 | int |
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| 107 | Timer_getTimer1 (unsigned int **count, unsigned int **reload, |
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| 108 | unsigned int **ctrl) |
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| 109 | { |
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| 110 | //--------------------- |
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| 111 | switch (LEONCOMPAT_VERSION) |
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| 112 | { |
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| 113 | case 3: |
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| 114 | default: |
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| 115 | amba_init (); |
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| 116 | *count = (unsigned int *) &(LEON3_GpTimer_Regs->e[0].val); |
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| 117 | *reload = (unsigned int *) &(LEON3_GpTimer_Regs->e[0].rld); |
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| 118 | *ctrl = (unsigned int *) &(LEON3_GpTimer_Regs->e[0].ctrl); |
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| 119 | break; |
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| 120 | } |
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| 121 | //--------------------- |
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| 122 | return 1; |
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| 123 | } |
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| 124 | |
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| 125 | int |
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| 126 | Timer_getTimer2 (unsigned int **count, unsigned int **reload, |
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| 127 | unsigned int **ctrl) |
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| 128 | { |
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| 129 | //--------------------- |
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| 130 | switch (LEONCOMPAT_VERSION) |
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| 131 | { |
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| 132 | case 3: |
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| 133 | default: |
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| 134 | amba_init (); |
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| 135 | if (!noalarm) |
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| 136 | { |
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| 137 | *count = (unsigned int *) &(LEON3_GpTimer_Regs->e[1].val); |
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| 138 | *reload = (unsigned int *) &(LEON3_GpTimer_Regs->e[1].rld); |
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| 139 | *ctrl = (unsigned int *) &(LEON3_GpTimer_Regs->e[1].ctrl); |
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| 140 | break; |
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| 141 | } |
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| 142 | return 0; |
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| 143 | } |
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| 144 | //--------------------- |
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| 145 | return 1; |
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| 146 | } |
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