RTEMS  5.1
mcdma_glue.h
1 /*===============================================================*\
2 | Project: RTEMS generic MFC548x BSP |
3 +-----------------------------------------------------------------+
4 | Copyright (c) 2004-2009 |
5 | Embedded Brains GmbH |
6 | Obere Lagerstr. 30 |
7 | D-82178 Puchheim |
8 | Germany |
9 | rtems@embedded-brains.de |
10 +-----------------------------------------------------------------+
11 | The license and distribution terms for this file may be |
12 | found in the file LICENSE in this distribution or at |
13 | |
14 | http://www.rtems.org/license/LICENSE. |
15 | |
16 +-----------------------------------------------------------------+
17 | this file declares glue functions to the Freescale Mcdma API |
18 \*===============================================================*/
19 #ifndef _MCDMA_GLUE_H
20 #define _MCDMA_GLUE_H
21 
22 #include <rtems.h>
23 #include <rtems/irq.h>
24 #include <mcf548x/mcf548x.h>
25 
26 #define MCDMA_CLR_PENDING(chan) (MCF548X_DMA_DIPR = (1 << (chan)))
27 #define MCDMA_GET_PENDING(chan) (MCF548X_DMA_DIPR & (1 << (chan)))
28 
29 /*=========================================================================*\
30 | Function: |
31 \*-------------------------------------------------------------------------*/
32 void mcdma_glue_irq_enable
33 (
34 /*-------------------------------------------------------------------------*\
35 | Purpose: |
36 | enable interrupt for given task number |
37 +---------------------------------------------------------------------------+
38 | Input Parameters: |
39 \*-------------------------------------------------------------------------*/
40  int mcdma_taskno /* task number to enable */
41  );
42 /*-------------------------------------------------------------------------*\
43 | Return Value: |
44 | none |
45 \*=========================================================================*/
46 
47 /*=========================================================================*\
48 | Function: |
49 \*-------------------------------------------------------------------------*/
50 void mcdma_glue_irq_disable
51 (
52 /*-------------------------------------------------------------------------*\
53 | Purpose: |
54 | disable interrupt for given task number |
55 +---------------------------------------------------------------------------+
56 | Input Parameters: |
57 \*-------------------------------------------------------------------------*/
58  int mcdma_taskno /* task number to disable */
59  );
60 /*-------------------------------------------------------------------------*\
61 | Return Value: |
62 | none |
63 \*=========================================================================*/
64 
65 /*=========================================================================*\
66 | Function: |
67 \*-------------------------------------------------------------------------*/
68 void mcdma_glue_irq_install
69 (
70 /*-------------------------------------------------------------------------*\
71 | Purpose: |
72 | install given function as mcdma interrupt handler |
73 +---------------------------------------------------------------------------+
74 | Input Parameters: |
75 \*-------------------------------------------------------------------------*/
76  int mcdma_taskno, /* task number for handler */
77  void (*the_handler)(rtems_irq_hdl_param), /* function to call */
78  void *the_param
79  );
80 /*-------------------------------------------------------------------------*\
81 | Return Value: |
82 | none |
83 \*=========================================================================*/
84 
85 /*=========================================================================*\
86 | Function: |
87 \*-------------------------------------------------------------------------*/
88 void mcdma_glue_init
89 (
90 /*-------------------------------------------------------------------------*\
91 | Purpose: |
92 | initialize the mcdma module (if not yet done): |
93 | - load code |
94 | - initialize registers |
95 | - initialize bus arbiter |
96 | - initialize interrupt control |
97 +---------------------------------------------------------------------------+
98 | Input Parameters: |
99 \*-------------------------------------------------------------------------*/
100  void *sram_base /* base address for SRAM, to be used for DMA task */
101  );
102 /*-------------------------------------------------------------------------*\
103 | Return Value: |
104 | none |
105 \*=========================================================================*/
106 
107 #endif /* _MCDMA_GLUE_H */
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