1 /* 2 * Copyright (c) 2017 - 2018, Nordic Semiconductor ASA 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, this 9 * list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * 3. Neither the name of the copyright holder nor the names of its 16 * contributors may be used to endorse or promote products derived from this 17 * software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <nrfx.h> 33 34 #if NRFX_CHECK(NRFX_PRS_ENABLED) 35 #include "nrfx_prs.h" 36 37 #define NRFX_LOG_MODULE PRS 38 #include <nrfx_log.h> 39 40 #define LOG_FUNCTION_EXIT(level, ret_code) \ 41 NRFX_LOG_##level("Function: %s, error code: %s.", \ 42 __func__, \ 43 NRFX_LOG_ERROR_STRING_GET(ret_code)) 44 45 46 typedef struct { 47 nrfx_irq_handler_t handler; 48 bool acquired; 49 } prs_box_t; 50 51 #define PRS_BOX_DEFINE(n) \ 52 static prs_box_t m_prs_box_##n = { .handler = NULL, .acquired = false }; \ 53 void nrfx_prs_box_##n##_irq_handler(void) \ 54 { \ 55 NRFX_ASSERT(m_prs_box_##n.handler); \ 56 m_prs_box_##n.handler(); \ 57 } 58 59 #if defined(NRFX_PRS_BOX_0_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_0_ENABLED) 60 PRS_BOX_DEFINE(0) 61 #endif 62 #if defined(NRFX_PRS_BOX_1_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_1_ENABLED) 63 PRS_BOX_DEFINE(1) 64 #endif 65 #if defined(NRFX_PRS_BOX_2_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_2_ENABLED) 66 PRS_BOX_DEFINE(2) 67 #endif 68 #if defined(NRFX_PRS_BOX_3_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_3_ENABLED) 69 PRS_BOX_DEFINE(3) 70 #endif 71 #if defined(NRFX_PRS_BOX_4_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_4_ENABLED) 72 PRS_BOX_DEFINE(4) 73 #endif 74 75 76 static prs_box_t * prs_box_get(void const * p_base_addr) 77 { 78 #if !defined(IS_PRS_BOX) 79 #define IS_PRS_BOX(n, p_base_addr) ((p_base_addr) == NRFX_PRS_BOX_##n##_ADDR) 80 #endif 81 82 #if defined(NRFX_PRS_BOX_0_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_0_ENABLED) 83 if (IS_PRS_BOX(0, p_base_addr)) { return &m_prs_box_0; } 84 else 85 #endif 86 #if defined(NRFX_PRS_BOX_1_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_1_ENABLED) 87 if (IS_PRS_BOX(1, p_base_addr)) { return &m_prs_box_1; } 88 else 89 #endif 90 #if defined(NRFX_PRS_BOX_2_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_2_ENABLED) 91 if (IS_PRS_BOX(2, p_base_addr)) { return &m_prs_box_2; } 92 else 93 #endif 94 #if defined(NRFX_PRS_BOX_3_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_3_ENABLED) 95 if (IS_PRS_BOX(3, p_base_addr)) { return &m_prs_box_3; } 96 else 97 #endif 98 #if defined(NRFX_PRS_BOX_4_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_4_ENABLED) 99 if (IS_PRS_BOX(4, p_base_addr)) { return &m_prs_box_4; } 100 else 101 #endif 102 { 103 return NULL; 104 } 105 } 106 107 nrfx_err_t nrfx_prs_acquire(void const * p_base_addr, 108 nrfx_irq_handler_t irq_handler) 109 { 110 NRFX_ASSERT(p_base_addr); 111 112 nrfx_err_t ret_code; 113 114 prs_box_t * p_box = prs_box_get(p_base_addr); 115 if (p_box != NULL) 116 { 117 bool busy = false; 118 119 NRFX_CRITICAL_SECTION_ENTER(); 120 if (p_box->acquired) 121 { 122 busy = true; 123 } 124 else 125 { 126 p_box->handler = irq_handler; 127 p_box->acquired = true; 128 } 129 NRFX_CRITICAL_SECTION_EXIT(); 130 131 if (busy) 132 { 133 ret_code = NRFX_ERROR_BUSY; 134 LOG_FUNCTION_EXIT(WARNING, ret_code); 135 return ret_code; 136 } 137 } 138 139 ret_code = NRFX_SUCCESS; 140 LOG_FUNCTION_EXIT(INFO, ret_code); 141 return ret_code; 142 } 143 144 void nrfx_prs_release(void const * p_base_addr) 145 { 146 NRFX_ASSERT(p_base_addr); 147 148 prs_box_t * p_box = prs_box_get(p_base_addr); 149 if (p_box != NULL) 150 { 151 p_box->handler = NULL; 152 p_box->acquired = false; 153 } 154 } 155 156 157 #endif // NRFX_CHECK(NRFX_PRS_ENABLED) 158