1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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2 | |
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3 | /** |
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4 | * @file |
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5 | * |
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6 | * @ingroup arm_gic |
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7 | * |
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8 | * @brief ARM GIC TM27 Support |
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9 | */ |
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10 | |
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11 | /* |
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12 | * Copyright (c) 2013-2014 embedded brains GmbH. All rights reserved. |
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13 | * |
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14 | * Redistribution and use in source and binary forms, with or without |
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15 | * modification, are permitted provided that the following conditions |
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16 | * are met: |
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17 | * 1. Redistributions of source code must retain the above copyright |
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18 | * notice, this list of conditions and the following disclaimer. |
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19 | * 2. Redistributions in binary form must reproduce the above copyright |
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20 | * notice, this list of conditions and the following disclaimer in the |
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21 | * documentation and/or other materials provided with the distribution. |
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22 | * |
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23 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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24 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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27 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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30 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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31 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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32 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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33 | * POSSIBILITY OF SUCH DAMAGE. |
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34 | */ |
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35 | |
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36 | #ifndef _RTEMS_TMTEST27 |
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37 | #error "This is an RTEMS internal file you must not include directly." |
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38 | #endif |
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39 | |
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40 | #ifndef LIBBSP_ARM_SHARED_ARM_GIC_TM27_H |
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41 | #define LIBBSP_ARM_SHARED_ARM_GIC_TM27_H |
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42 | |
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43 | #include <assert.h> |
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44 | |
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45 | #include <bsp.h> |
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46 | #include <bsp/irq.h> |
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47 | |
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48 | #define MUST_WAIT_FOR_INTERRUPT 1 |
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49 | |
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50 | #ifndef ARM_GIC_TM27_IRQ_LOW |
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51 | #define ARM_GIC_TM27_IRQ_LOW ARM_GIC_IRQ_SGI_12 |
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52 | #endif |
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53 | |
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54 | #ifndef ARM_GIC_TM27_IRQ_HIGH |
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55 | #define ARM_GIC_TM27_IRQ_HIGH ARM_GIC_IRQ_SGI_13 |
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56 | #endif |
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57 | |
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58 | #define ARM_GIC_TM27_PRIO_LOW 0x80 |
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59 | |
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60 | #define ARM_GIC_TM27_PRIO_HIGH 0x00 |
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61 | |
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62 | static inline void Install_tm27_vector(void (*handler)(rtems_vector_number)) |
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63 | { |
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64 | rtems_status_code sc = rtems_interrupt_handler_install( |
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65 | ARM_GIC_TM27_IRQ_LOW, |
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66 | "tm27 low", |
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67 | RTEMS_INTERRUPT_UNIQUE, |
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68 | (rtems_interrupt_handler) handler, |
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69 | NULL |
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70 | ); |
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71 | assert(sc == RTEMS_SUCCESSFUL); |
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72 | |
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73 | sc = arm_gic_irq_set_priority( |
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74 | ARM_GIC_TM27_IRQ_LOW, |
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75 | ARM_GIC_TM27_PRIO_LOW |
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76 | ); |
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77 | assert(sc == RTEMS_SUCCESSFUL); |
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78 | |
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79 | sc = rtems_interrupt_handler_install( |
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80 | ARM_GIC_TM27_IRQ_HIGH, |
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81 | "tm27 high", |
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82 | RTEMS_INTERRUPT_UNIQUE, |
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83 | (rtems_interrupt_handler) handler, |
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84 | NULL |
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85 | ); |
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86 | assert(sc == RTEMS_SUCCESSFUL); |
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87 | |
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88 | sc = arm_gic_irq_set_priority( |
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89 | ARM_GIC_TM27_IRQ_HIGH, |
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90 | ARM_GIC_TM27_PRIO_HIGH |
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91 | ); |
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92 | assert(sc == RTEMS_SUCCESSFUL); |
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93 | } |
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94 | |
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95 | static inline void Cause_tm27_intr(void) |
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96 | { |
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97 | rtems_status_code sc = arm_gic_irq_generate_software_irq( |
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98 | ARM_GIC_TM27_IRQ_LOW, |
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99 | 1U << _SMP_Get_current_processor() |
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100 | ); |
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101 | assert(sc == RTEMS_SUCCESSFUL); |
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102 | } |
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103 | |
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104 | static inline void Clear_tm27_intr(void) |
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105 | { |
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106 | /* Nothing to do */ |
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107 | } |
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108 | |
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109 | static inline void Lower_tm27_intr(void) |
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110 | { |
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111 | rtems_status_code sc = arm_gic_irq_generate_software_irq( |
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112 | ARM_GIC_TM27_IRQ_HIGH, |
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113 | 1U << _SMP_Get_current_processor() |
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114 | ); |
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115 | assert(sc == RTEMS_SUCCESSFUL); |
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116 | } |
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117 | |
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118 | #endif /* LIBBSP_ARM_SHARED_ARM_GIC_TM27_H */ |
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