1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief NIOS2 ISR Set Level |
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5 | */ |
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6 | |
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7 | /* |
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8 | * Copyright (c) 2011 embedded brains GmbH |
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9 | * |
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10 | * Copyright (c) 2006 Kolja Waschk (rtemsdev/ixo.de) |
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11 | * |
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12 | * COPYRIGHT (c) 1989-2006 |
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13 | * On-Line Applications Research Corporation (OAR). |
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14 | * |
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15 | * The license and distribution terms for this file may be |
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16 | * found in the file LICENSE in this distribution or at |
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17 | * http://www.rtems.org/license/LICENSE. |
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18 | */ |
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19 | |
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20 | #ifdef HAVE_CONFIG_H |
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21 | #include "config.h" |
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22 | #endif |
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23 | |
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24 | #include <rtems/score/cpu.h> |
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25 | #include <rtems/score/interr.h> |
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26 | #include <rtems/score/nios2-utility.h> |
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27 | |
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28 | uint32_t _Nios2_ISR_Set_level( uint32_t new_level, uint32_t status ) |
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29 | { |
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30 | switch ( _Nios2_ISR_Get_status_mask() ) { |
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31 | case NIOS2_ISR_STATUS_MASK_IIC: |
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32 | if ( new_level == 0 ) { |
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33 | status |= NIOS2_STATUS_PIE; |
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34 | } else { |
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35 | status &= ~NIOS2_STATUS_PIE; |
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36 | } |
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37 | break; |
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38 | case NIOS2_ISR_STATUS_MASK_EIC_IL: |
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39 | status &= ~NIOS2_STATUS_IL_MASK; |
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40 | status |= (new_level << NIOS2_STATUS_IL_OFFSET) & NIOS2_STATUS_IL_MASK; |
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41 | break; |
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42 | case NIOS2_ISR_STATUS_MASK_EIC_RSIE: |
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43 | if ( new_level == 0 ) { |
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44 | status |= NIOS2_STATUS_RSIE; |
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45 | } else { |
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46 | status &= ~NIOS2_STATUS_RSIE; |
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47 | } |
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48 | break; |
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49 | default: |
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50 | /* FIXME */ |
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51 | _Terminate( INTERNAL_ERROR_CORE, 0xdeadbeef ); |
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52 | break; |
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53 | } |
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54 | |
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55 | return status; |
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56 | } |
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57 | |
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58 | void _CPU_ISR_Set_level( uint32_t new_level ) |
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59 | { |
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60 | uint32_t status = _Nios2_Get_ctlreg_status(); |
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61 | |
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62 | status = _Nios2_ISR_Set_level( new_level, status ); |
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63 | |
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64 | _Nios2_Set_ctlreg_status( status ); |
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65 | } |
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