1 | /* |
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2 | * |
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3 | * This file contains the implementation of the function described in irq.h |
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4 | * |
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5 | * Copyright (C) 1998, 1999 valette@crf.canon.fr |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in found in the file LICENSE in this distribution or at |
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9 | * http://www.rtems.com/license/LICENSE. |
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10 | * |
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11 | * Dummy support for just the decrementer interrupt but no PIC. |
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12 | * |
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13 | * T. Straumann, 2007/11/30 |
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14 | * |
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15 | * $Id$ |
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16 | */ |
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17 | |
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18 | #include <rtems.h> |
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19 | #include <bsp.h> |
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20 | #include <bsp/irq.h> |
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21 | #include <bsp/irq_supp.h> |
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22 | #include <libcpu/raw_exception.h> |
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23 | |
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24 | static rtems_irq_connect_data *rtems_hdl_tbl; |
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25 | static rtems_irq_connect_data dflt_entry; |
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26 | |
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27 | /* |
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28 | * High level IRQ handler called from shared_raw_irq_code_entry |
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29 | */ |
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30 | int C_dispatch_irq_handler( |
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31 | struct _BSP_Exception_frame *frame, |
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32 | unsigned int excNum |
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33 | ) |
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34 | { |
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35 | register uint32_t l_orig; |
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36 | |
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37 | if (excNum == ASM_DEC_VECTOR) { |
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38 | |
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39 | l_orig = _ISR_Get_level(); |
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40 | /* re-enable all interrupts */ |
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41 | _ISR_Set_level(0); |
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42 | |
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43 | bsp_irq_dispatch_list(rtems_hdl_tbl, BSP_DECREMENTER, dflt_entry.hdl); |
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44 | |
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45 | _ISR_Set_level(l_orig); |
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46 | return 0; |
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47 | } |
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48 | return -1; /* unhandled interrupt */ |
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49 | } |
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50 | |
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51 | void |
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52 | BSP_enable_irq_at_pic(const rtems_irq_number irq) |
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53 | { |
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54 | } |
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55 | |
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56 | int |
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57 | BSP_disable_irq_at_pic(const rtems_irq_number irq) |
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58 | { |
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59 | return 0; |
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60 | } |
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61 | |
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62 | int |
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63 | BSP_setup_the_pic(rtems_irq_global_settings *config) |
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64 | { |
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65 | dflt_entry = config->defaultEntry; |
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66 | rtems_hdl_tbl = config->irqHdlTbl; |
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67 | return 1; |
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68 | } |
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