1 | /*===============================================================*\ |
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2 | | Project: RTEMS generic MFC548x BSP | |
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3 | +-----------------------------------------------------------------+ |
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4 | | Copyright (c) 2004-2009 | |
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5 | | Embedded Brains GmbH | |
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6 | | Obere Lagerstr. 30 | |
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7 | | D-82178 Puchheim | |
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8 | | Germany | |
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9 | | rtems@embedded-brains.de | |
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10 | +-----------------------------------------------------------------+ |
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11 | | The license and distribution terms for this file may be | |
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12 | | found in the file LICENSE in this distribution or at | |
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13 | | | |
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14 | | http://www.rtems.org/license/LICENSE. | |
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15 | | | |
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16 | +-----------------------------------------------------------------+ |
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17 | | this file declares glue functions to the Freescale Mcdma API | |
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18 | \*===============================================================*/ |
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19 | #ifndef _MCDMA_GLUE_H |
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20 | #define _MCDMA_GLUE_H |
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21 | |
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22 | #include <rtems.h> |
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23 | #include <rtems/irq.h> |
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24 | #include <mcf548x/mcf548x.h> |
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25 | |
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26 | #define MCDMA_CLR_PENDING(chan) (MCF548X_DMA_DIPR = (1 << (chan))) |
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27 | #define MCDMA_GET_PENDING(chan) (MCF548X_DMA_DIPR & (1 << (chan))) |
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28 | |
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29 | /*=========================================================================*\ |
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30 | | Function: | |
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31 | \*-------------------------------------------------------------------------*/ |
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32 | void mcdma_glue_irq_enable |
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33 | ( |
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34 | /*-------------------------------------------------------------------------*\ |
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35 | | Purpose: | |
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36 | | enable interrupt for given task number | |
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37 | +---------------------------------------------------------------------------+ |
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38 | | Input Parameters: | |
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39 | \*-------------------------------------------------------------------------*/ |
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40 | int mcdma_taskno /* task number to enable */ |
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41 | ); |
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42 | /*-------------------------------------------------------------------------*\ |
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43 | | Return Value: | |
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44 | | none | |
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45 | \*=========================================================================*/ |
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46 | |
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47 | /*=========================================================================*\ |
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48 | | Function: | |
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49 | \*-------------------------------------------------------------------------*/ |
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50 | void mcdma_glue_irq_disable |
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51 | ( |
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52 | /*-------------------------------------------------------------------------*\ |
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53 | | Purpose: | |
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54 | | disable interrupt for given task number | |
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55 | +---------------------------------------------------------------------------+ |
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56 | | Input Parameters: | |
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57 | \*-------------------------------------------------------------------------*/ |
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58 | int mcdma_taskno /* task number to disable */ |
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59 | ); |
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60 | /*-------------------------------------------------------------------------*\ |
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61 | | Return Value: | |
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62 | | none | |
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63 | \*=========================================================================*/ |
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64 | |
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65 | /*=========================================================================*\ |
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66 | | Function: | |
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67 | \*-------------------------------------------------------------------------*/ |
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68 | void mcdma_glue_irq_install |
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69 | ( |
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70 | /*-------------------------------------------------------------------------*\ |
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71 | | Purpose: | |
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72 | | install given function as mcdma interrupt handler | |
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73 | +---------------------------------------------------------------------------+ |
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74 | | Input Parameters: | |
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75 | \*-------------------------------------------------------------------------*/ |
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76 | int mcdma_taskno, /* task number for handler */ |
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77 | void (*the_handler)(rtems_irq_hdl_param), /* function to call */ |
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78 | void *the_param |
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79 | ); |
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80 | /*-------------------------------------------------------------------------*\ |
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81 | | Return Value: | |
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82 | | none | |
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83 | \*=========================================================================*/ |
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84 | |
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85 | /*=========================================================================*\ |
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86 | | Function: | |
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87 | \*-------------------------------------------------------------------------*/ |
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88 | void mcdma_glue_init |
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89 | ( |
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90 | /*-------------------------------------------------------------------------*\ |
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91 | | Purpose: | |
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92 | | initialize the mcdma module (if not yet done): | |
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93 | | - load code | |
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94 | | - initialize registers | |
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95 | | - initialize bus arbiter | |
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96 | | - initialize interrupt control | |
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97 | +---------------------------------------------------------------------------+ |
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98 | | Input Parameters: | |
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99 | \*-------------------------------------------------------------------------*/ |
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100 | void *sram_base /* base address for SRAM, to be used for DMA task */ |
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101 | ); |
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102 | /*-------------------------------------------------------------------------*\ |
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103 | | Return Value: | |
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104 | | none | |
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105 | \*=========================================================================*/ |
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106 | |
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107 | #endif /* _MCDMA_GLUE_H */ |
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