[fe8b4b6c] | 1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
---|
| 2 | |
---|
[574fb67] | 3 | /** |
---|
| 4 | * @file |
---|
| 5 | * |
---|
| 6 | * @brief Source file for timer functions. |
---|
| 7 | */ |
---|
| 8 | |
---|
| 9 | /* |
---|
[bcef89f2] | 10 | * Copyright (c) 2008 embedded brains GmbH & Co. KG |
---|
[fe8b4b6c] | 11 | * Redistribution and use in source and binary forms, with or without |
---|
| 12 | * modification, are permitted provided that the following conditions |
---|
| 13 | * are met: |
---|
| 14 | * 1. Redistributions of source code must retain the above copyright |
---|
| 15 | * notice, this list of conditions and the following disclaimer. |
---|
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
---|
| 17 | * notice, this list of conditions and the following disclaimer in the |
---|
| 18 | * documentation and/or other materials provided with the distribution. |
---|
| 19 | * |
---|
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
---|
| 21 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
---|
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
---|
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
---|
| 24 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
---|
| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
---|
| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
---|
| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
---|
| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
---|
| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
---|
| 30 | * POSSIBILITY OF SUCH DAMAGE. |
---|
[574fb67] | 31 | */ |
---|
| 32 | |
---|
| 33 | #include <rtems/bspIo.h> |
---|
| 34 | |
---|
| 35 | #include <mpc83xx/mpc83xx.h> |
---|
| 36 | #include <mpc83xx/gtm.h> |
---|
| 37 | |
---|
| 38 | #define RTEMS_STATUS_CHECKS_USE_PRINTK |
---|
| 39 | |
---|
| 40 | #include <rtems/status-checks.h> |
---|
| 41 | |
---|
| 42 | #define MPC83XX_GTM_CHECK_INDEX( timer) \ |
---|
| 43 | if (( timer) < 0 || ( timer) >= MPC83XX_GTM_NUMBER) { \ |
---|
| 44 | return RTEMS_INVALID_NUMBER; \ |
---|
| 45 | } |
---|
| 46 | |
---|
[ff8f05b] | 47 | #define GTM_MODULE(timer) ((timer)/4) |
---|
| 48 | #define GTM_MODULE_TIMER(timer) ((timer)%4) |
---|
| 49 | #define GTM_HIGH(timer) (GTM_MODULE_TIMER(timer)/2) |
---|
| 50 | #define GTM_LOW(timer) (GTM_MODULE_TIMER(timer)%2) |
---|
[574fb67] | 51 | |
---|
| 52 | #define MPC83XX_GTM_CLOCK_MASK MPC83XX_GTM_CLOCK_EXTERN |
---|
| 53 | |
---|
| 54 | static const uint8_t mpc83xx_gmt_interrupt_vector_table [MPC83XX_GTM_NUMBER] = { 90, 78, 84, 72, 91, 79, 85, 73 }; |
---|
| 55 | |
---|
| 56 | rtems_status_code mpc83xx_gtm_initialize( int timer, int clock) |
---|
| 57 | { |
---|
| 58 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
[ff8f05b] | 59 | rtems_interrupt_level level; |
---|
[574fb67] | 60 | |
---|
[ff8f05b] | 61 | unsigned mask = 0xfU << (GTM_LOW(timer) * 4); |
---|
| 62 | unsigned flags = 0x3U << (GTM_LOW(timer) * 4); |
---|
[1dab788] | 63 | uint8_t reg = 0; |
---|
[574fb67] | 64 | |
---|
| 65 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 66 | |
---|
| 67 | rtems_interrupt_disable( level); |
---|
| 68 | |
---|
[ff8f05b] | 69 | reg = mpc83xx.gtm [GTM_MODULE(timer)].gtcfr [GTM_HIGH(timer)].reg; |
---|
| 70 | mpc83xx.gtm [GTM_MODULE(timer)].gtcfr [GTM_HIGH(timer)].reg = |
---|
| 71 | (uint8_t) ((reg & ~mask) | flags); |
---|
[574fb67] | 72 | |
---|
[ff8f05b] | 73 | mpc83xx.gtm [GTM_MODULE(timer)] |
---|
| 74 | .gt_tim_regs [GTM_HIGH(timer)] |
---|
| 75 | .gtmdr [GTM_LOW(timer)] = 0; |
---|
[574fb67] | 76 | |
---|
| 77 | rtems_interrupt_enable( level); |
---|
| 78 | |
---|
| 79 | sc = mpc83xx_gtm_set_clock( timer, clock); |
---|
[602aee20] | 80 | RTEMS_CHECK_SC( sc, "Set clock"); |
---|
[574fb67] | 81 | |
---|
| 82 | sc = mpc83xx_gtm_set_value( timer, 0); |
---|
[602aee20] | 83 | RTEMS_CHECK_SC( sc, "Set value"); |
---|
[574fb67] | 84 | |
---|
| 85 | sc = mpc83xx_gtm_set_reference( timer, 0); |
---|
[602aee20] | 86 | RTEMS_CHECK_SC( sc, "Set reference"); |
---|
[574fb67] | 87 | |
---|
| 88 | sc = mpc83xx_gtm_set_prescale( timer, 0); |
---|
[602aee20] | 89 | RTEMS_CHECK_SC( sc, "Set prescale"); |
---|
[574fb67] | 90 | |
---|
| 91 | return RTEMS_SUCCESSFUL; |
---|
| 92 | } |
---|
| 93 | |
---|
| 94 | rtems_status_code mpc83xx_gtm_enable_restart( int timer, bool enable) |
---|
| 95 | { |
---|
[ff8f05b] | 96 | rtems_interrupt_level level; |
---|
[574fb67] | 97 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 98 | |
---|
| 99 | rtems_interrupt_disable( level); |
---|
| 100 | |
---|
| 101 | if (enable) { |
---|
[ff8f05b] | 102 | mpc83xx.gtm [GTM_MODULE(timer)] |
---|
| 103 | .gt_tim_regs [GTM_HIGH(timer)] |
---|
| 104 | .gtmdr [GTM_LOW(timer)] |= 0x0008; |
---|
[574fb67] | 105 | } else { |
---|
[ff8f05b] | 106 | mpc83xx.gtm [GTM_MODULE(timer)] |
---|
| 107 | .gt_tim_regs [GTM_HIGH(timer)] |
---|
| 108 | .gtmdr [GTM_LOW(timer)] &= ~0x0008; |
---|
[574fb67] | 109 | } |
---|
| 110 | |
---|
| 111 | rtems_interrupt_enable( level); |
---|
| 112 | |
---|
| 113 | return RTEMS_SUCCESSFUL; |
---|
| 114 | } |
---|
| 115 | |
---|
| 116 | rtems_status_code mpc83xx_gtm_set_clock( int timer, int clock) |
---|
| 117 | { |
---|
[ff8f05b] | 118 | rtems_interrupt_level level; |
---|
[574fb67] | 119 | uint16_t reg = 0; |
---|
| 120 | |
---|
| 121 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 122 | |
---|
| 123 | if (clock & ~MPC83XX_GTM_CLOCK_MASK) { |
---|
| 124 | return RTEMS_INVALID_CLOCK; |
---|
| 125 | } |
---|
| 126 | |
---|
| 127 | rtems_interrupt_disable( level); |
---|
| 128 | |
---|
[ff8f05b] | 129 | reg = mpc83xx.gtm [GTM_MODULE(timer)] |
---|
| 130 | .gt_tim_regs [GTM_HIGH(timer)] |
---|
| 131 | .gtmdr [GTM_LOW(timer)]; |
---|
| 132 | mpc83xx.gtm [GTM_MODULE(timer)] |
---|
| 133 | .gt_tim_regs [GTM_HIGH(timer)] |
---|
| 134 | .gtmdr [GTM_LOW(timer)] = (reg & ~MPC83XX_GTM_CLOCK_MASK) | clock; |
---|
[574fb67] | 135 | |
---|
| 136 | rtems_interrupt_enable( level); |
---|
| 137 | |
---|
| 138 | return RTEMS_SUCCESSFUL; |
---|
| 139 | } |
---|
| 140 | |
---|
| 141 | rtems_status_code mpc83xx_gtm_get_clock( int timer, int *clock) |
---|
| 142 | { |
---|
| 143 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 144 | |
---|
[ff8f05b] | 145 | *clock = mpc83xx.gtm [GTM_MODULE(timer)] |
---|
| 146 | .gt_tim_regs [GTM_HIGH(timer)] |
---|
| 147 | .gtmdr [GTM_LOW(timer)] & MPC83XX_GTM_CLOCK_MASK; |
---|
[574fb67] | 148 | |
---|
| 149 | return RTEMS_SUCCESSFUL; |
---|
| 150 | } |
---|
| 151 | |
---|
| 152 | rtems_status_code mpc83xx_gtm_start( int timer) |
---|
| 153 | { |
---|
[ff8f05b] | 154 | rtems_interrupt_level level; |
---|
| 155 | uint8_t flags = 0x2 << (GTM_LOW(timer) * 4); |
---|
[574fb67] | 156 | |
---|
| 157 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 158 | |
---|
| 159 | rtems_interrupt_disable( level); |
---|
[ff8f05b] | 160 | mpc83xx.gtm [GTM_MODULE(timer)] |
---|
| 161 | .gtcfr [GTM_HIGH(timer)].reg &= ~flags; |
---|
[574fb67] | 162 | rtems_interrupt_enable( level); |
---|
| 163 | |
---|
| 164 | return RTEMS_SUCCESSFUL; |
---|
| 165 | } |
---|
| 166 | |
---|
| 167 | rtems_status_code mpc83xx_gtm_stop( int timer) |
---|
| 168 | { |
---|
[ff8f05b] | 169 | rtems_interrupt_level level; |
---|
| 170 | uint8_t flags = 0x2 << (GTM_LOW(timer) * 4); |
---|
[574fb67] | 171 | |
---|
| 172 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 173 | |
---|
| 174 | rtems_interrupt_disable( level); |
---|
[ff8f05b] | 175 | mpc83xx.gtm [GTM_MODULE(timer)].gtcfr [GTM_HIGH(timer)].reg |= flags; |
---|
[574fb67] | 176 | rtems_interrupt_enable( level); |
---|
| 177 | |
---|
| 178 | return RTEMS_SUCCESSFUL; |
---|
| 179 | } |
---|
| 180 | |
---|
| 181 | rtems_status_code mpc83xx_gtm_set_value( int timer, uint16_t value) |
---|
| 182 | { |
---|
| 183 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 184 | |
---|
[ff8f05b] | 185 | mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtcnr [GTM_LOW(timer)] = value; |
---|
[574fb67] | 186 | |
---|
| 187 | return RTEMS_SUCCESSFUL; |
---|
| 188 | } |
---|
| 189 | |
---|
| 190 | rtems_status_code mpc83xx_gtm_get_value( int timer, uint16_t *value) |
---|
| 191 | { |
---|
| 192 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 193 | |
---|
[ff8f05b] | 194 | *value = mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtcnr [GTM_LOW(timer)]; |
---|
[574fb67] | 195 | |
---|
| 196 | return RTEMS_SUCCESSFUL; |
---|
| 197 | } |
---|
| 198 | |
---|
| 199 | rtems_status_code mpc83xx_gtm_set_reference( int timer, uint16_t reference) |
---|
| 200 | { |
---|
| 201 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 202 | |
---|
[ff8f05b] | 203 | mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtrfr [GTM_LOW(timer)] = reference; |
---|
[574fb67] | 204 | |
---|
| 205 | return RTEMS_SUCCESSFUL; |
---|
| 206 | } |
---|
| 207 | |
---|
| 208 | rtems_status_code mpc83xx_gtm_get_reference( int timer, uint16_t *reference) |
---|
| 209 | { |
---|
| 210 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 211 | |
---|
[ff8f05b] | 212 | *reference = mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtrfr [GTM_LOW(timer)]; |
---|
[574fb67] | 213 | |
---|
| 214 | return RTEMS_SUCCESSFUL; |
---|
| 215 | } |
---|
| 216 | |
---|
| 217 | rtems_status_code mpc83xx_gtm_set_prescale( int timer, uint8_t prescale) |
---|
| 218 | { |
---|
| 219 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 220 | |
---|
[ff8f05b] | 221 | mpc83xx.gtm [GTM_MODULE(timer)].gtpsr [GTM_MODULE_TIMER(timer)] = prescale; |
---|
[574fb67] | 222 | |
---|
| 223 | return RTEMS_SUCCESSFUL; |
---|
| 224 | } |
---|
| 225 | |
---|
| 226 | rtems_status_code mpc83xx_gtm_get_prescale( int timer, uint8_t *prescale) |
---|
| 227 | { |
---|
| 228 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 229 | |
---|
[ff8f05b] | 230 | *prescale = mpc83xx.gtm [GTM_MODULE(timer)].gtpsr [GTM_MODULE_TIMER(timer)]; |
---|
[574fb67] | 231 | |
---|
| 232 | return RTEMS_SUCCESSFUL; |
---|
| 233 | } |
---|
| 234 | |
---|
| 235 | rtems_status_code mpc83xx_gtm_interrupt_get_vector( int timer, rtems_vector_number *vector) |
---|
| 236 | { |
---|
| 237 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 238 | |
---|
| 239 | *vector = mpc83xx_gmt_interrupt_vector_table [timer]; |
---|
| 240 | |
---|
| 241 | return RTEMS_SUCCESSFUL; |
---|
| 242 | } |
---|
| 243 | |
---|
| 244 | rtems_status_code mpc83xx_gtm_interrupt_enable( int timer) |
---|
| 245 | { |
---|
[ff8f05b] | 246 | rtems_interrupt_level level; |
---|
[574fb67] | 247 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 248 | |
---|
| 249 | rtems_interrupt_disable( level); |
---|
[ff8f05b] | 250 | mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtmdr [GTM_LOW(timer)] |= 0x0010; |
---|
[574fb67] | 251 | rtems_interrupt_enable( level); |
---|
| 252 | |
---|
| 253 | return RTEMS_SUCCESSFUL; |
---|
| 254 | } |
---|
| 255 | |
---|
| 256 | rtems_status_code mpc83xx_gtm_interrupt_disable( int timer) |
---|
| 257 | { |
---|
[ff8f05b] | 258 | rtems_interrupt_level level; |
---|
[574fb67] | 259 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 260 | |
---|
| 261 | rtems_interrupt_disable( level); |
---|
[ff8f05b] | 262 | mpc83xx.gtm [GTM_MODULE(timer)].gt_tim_regs [GTM_HIGH(timer)].gtmdr [GTM_LOW(timer)] &= ~0x0010; |
---|
[574fb67] | 263 | rtems_interrupt_enable( level); |
---|
| 264 | |
---|
| 265 | return RTEMS_SUCCESSFUL; |
---|
| 266 | } |
---|
| 267 | |
---|
| 268 | rtems_status_code mpc83xx_gtm_interrupt_clear( int timer) |
---|
| 269 | { |
---|
| 270 | MPC83XX_GTM_CHECK_INDEX( timer); |
---|
| 271 | |
---|
[ff8f05b] | 272 | mpc83xx.gtm [GTM_MODULE(timer)].gtevr [GTM_MODULE_TIMER(timer)] = 0x0002; |
---|
[574fb67] | 273 | |
---|
| 274 | return RTEMS_SUCCESSFUL; |
---|
| 275 | } |
---|