1 | /* |
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2 | * Copyright (c) 2010 embedded brains GmbH. |
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3 | * |
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4 | * PXA255 Interrupt handler by Yang Xi <hiyangxi@gmail.com> |
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5 | * Copyright (c) 2004 by Jay Monkman <jtm@lopingdog.com> |
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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 the file LICENSE in this distribution or at |
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9 | * http://www.rtems.org/license/LICENSE. |
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10 | */ |
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11 | |
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12 | #include <rtems/score/armv4.h> |
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13 | |
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14 | #include <bsp.h> |
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15 | #include <bsp/irq.h> |
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16 | #include <bsp/irq-generic.h> |
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17 | |
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18 | #include <pxa255.h> |
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19 | |
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20 | void bsp_interrupt_dispatch(void) |
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21 | { |
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22 | rtems_vector_number vector = 31 - __builtin_clz(XSCALE_INT_ICIP); |
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23 | |
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24 | bsp_interrupt_handler_dispatch(vector); |
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25 | } |
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26 | |
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27 | rtems_status_code bsp_interrupt_get_attributes( |
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28 | rtems_vector_number vector, |
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29 | rtems_interrupt_attributes *attributes |
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30 | ) |
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31 | { |
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32 | return RTEMS_SUCCESSFUL; |
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33 | } |
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34 | |
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35 | rtems_status_code bsp_interrupt_is_pending( |
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36 | rtems_vector_number vector, |
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37 | bool *pending |
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38 | ) |
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39 | { |
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40 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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41 | bsp_interrupt_assert(pending != NULL); |
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42 | *pending = false; |
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43 | return RTEMS_UNSATISFIED; |
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44 | } |
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45 | |
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46 | rtems_status_code bsp_interrupt_raise(rtems_vector_number vector) |
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47 | { |
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48 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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49 | return RTEMS_UNSATISFIED; |
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50 | } |
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51 | |
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52 | rtems_status_code bsp_interrupt_clear(rtems_vector_number vector) |
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53 | { |
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54 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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55 | return RTEMS_UNSATISFIED; |
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56 | } |
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57 | |
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58 | rtems_status_code bsp_interrupt_vector_is_enabled( |
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59 | rtems_vector_number vector, |
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60 | bool *enabled |
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61 | ) |
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62 | { |
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63 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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64 | bsp_interrupt_assert(enabled != NULL); |
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65 | *enabled = false; |
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66 | return RTEMS_UNSATISFIED; |
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67 | } |
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68 | |
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69 | rtems_status_code bsp_interrupt_vector_enable(rtems_vector_number vector) |
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70 | { |
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71 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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72 | XSCALE_INT_ICMR |= 1 << vector; |
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73 | return RTEMS_SUCCESSFUL; |
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74 | } |
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75 | |
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76 | rtems_status_code bsp_interrupt_vector_disable(rtems_vector_number vector) |
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77 | { |
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78 | bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); |
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79 | XSCALE_INT_ICMR &= ~(1 << vector); |
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80 | return RTEMS_SUCCESSFUL; |
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81 | } |
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82 | |
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83 | void bsp_interrupt_facility_initialize(void) |
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84 | { |
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85 | /* disable all interrupts */ |
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86 | XSCALE_INT_ICMR = 0x0; |
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87 | |
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88 | /* Direct the interrupt to IRQ*/ |
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89 | XSCALE_INT_ICLR = 0x0; |
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90 | |
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91 | /* Install the IRQ exception handler */ |
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92 | _CPU_ISR_install_vector(ARM_EXCEPTION_IRQ, _ARMV4_Exception_interrupt, NULL); |
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93 | } |
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