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comparison src/g23m-fad/ra/ra_shm.c @ 174:90eb61ecd093

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src/g23m-fad: initial import from TCS3.2/LoCosto
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 12 Oct 2016 05:40:46 +0000
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173:bf64d785238a 174:90eb61ecd093
1 /*
2 +-----------------------------------------------------------------------------
3 | Project : GSM-F&D (8411)
4 | Modul : RA_SHM
5 +-----------------------------------------------------------------------------
6 | Copyright 2002 Texas Instruments Berlin, AG
7 | All rights reserved.
8 |
9 | This file is confidential and a trade secret of Texas
10 | Instruments Berlin, AG
11 | The receipt of or possession of this file does not convey
12 | any rights to reproduce or disclose its contents or to
13 | manufacture, use, or sell anything it may describe, in
14 | whole, or in part, without the specific written consent of
15 | Texas Instruments Berlin, AG.
16 +-----------------------------------------------------------------------------
17 | Purpose : This Modul defines the functions for accessing the
18 | shared memory segment between MCU and DSP
19 +-----------------------------------------------------------------------------
20 */
21
22 #ifndef RA_SHM_C
23 #define RA_SHM_C
24 #endif
25
26 #define ENTITY_RA
27
28 /*==== INCLUDES ===================================================*/
29
30 #include <string.h>
31 #include "typedefs.h"
32 #include "pconst.cdg"
33 #include "vsi.h"
34 #include "custom.h"
35 #include "gsm.h"
36 #include "cnf_ra.h"
37 #include "prim.h"
38 #include "pei.h"
39 #include "tok.h"
40 #include "ccdapi.h"
41 #include "ra.h"
42
43 /*==== CONST ======================================================*/
44 /*==== TYPES ======================================================*/
45 /*==== VARIABLES ==================================================*/
46 /*==== FUNCTIONS ==================================================*/
47
48 /*
49 +--------------------------------------------------------------------+
50 | PROJECT : GSM-F&D (8411) MODULE : RA_SHM |
51 | STATE : code ROUTINE : shm_set_dsp_buffer |
52 +--------------------------------------------------------------------+
53
54 PURPOSE :
55 */
56
57 GLOBAL USHORT shm_set_dsp_buffer(T_FRAME_DESC *data, register USHORT *buffer, USHORT offs, USHORT free)
58 {
59 register UBYTE *b;
60 USHORT len, segment;
61
62 buffer = (USHORT*) ( ( (UBYTE*) buffer ) + offs );
63 /*
64 * write the both segments specified by the frame descriptor data to the DSP mem.
65 */
66 for (segment = 0; segment < 2; segment++)
67 {
68 /*
69 * limitate the length fields;
70 */
71 len = free;
72
73 if (len > data->Len[segment])
74 len = data->Len[segment];
75
76 if (len)
77 {
78 data->Len[segment] -= len;
79 b = data->Adr[segment];
80 {
81 memcpy( (UBYTE*) buffer, (UBYTE*) b, (USHORT) len );
82 buffer = (USHORT*) ( ( (UBYTE*) buffer ) + len );
83 free -= len;
84 offs += len;
85 }
86 }
87 }
88 return offs;
89 }
90
91 GLOBAL U8 shm_set_dsp_buffer_new(T_FD *pFD, USHORT *buffer, U8 offs, U8 free)
92 {
93 U8 len;
94
95 buffer = (USHORT*)(((UBYTE*)buffer) + offs);
96 /*
97 * limitate the length fields;
98 */
99 len = MINIMUM(free, pFD->len);
100 if (len)
101 {
102 memcpy((UBYTE*)buffer, (UBYTE*)pFD->buf, (USHORT)len);
103 buffer = (USHORT*)(((UBYTE*)buffer) + len);
104 }
105 return len;
106 }
107
108 /*
109 +--------------------------------------------------------------------+
110 | PROJECT : GSM-F&D (8411) MODULE : RA_SHM |
111 | STATE : code ROUTINE : shm_get_dsp_buffer |
112 +--------------------------------------------------------------------+
113
114 PURPOSE :
115
116 */
117 GLOBAL USHORT shm_get_dsp_buffer(T_FRAME_DESC *data, register USHORT *buffer, USHORT bytes_to_read)
118 {
119 register UBYTE *b;
120 USHORT offs = 0;
121 USHORT len, segment;
122 /*
123 * read the both segments specified by the frame descriptor data from the DSP mem
124 */
125 for (segment = 0; segment < 2; segment++)
126 {
127 len = MINIMUM(data->Len[segment], bytes_to_read);
128 if (len)
129 {
130 data->Len[segment] -= len;
131 b = data->Adr[segment];
132 #ifdef TI_PS_16BIT_CPY
133 api_memcpy((UBYTE*)b, (UBYTE*)buffer, (USHORT)len );
134 #else
135 memcpy((UBYTE*)b, (UBYTE*)buffer, (USHORT)len );
136 #endif
137 buffer = (USHORT*)(((UBYTE*)buffer) + len);
138 bytes_to_read -= len;
139 offs += len;
140 }
141 }
142 return offs;
143 }
144
145 GLOBAL U8 shm_get_dsp_buffer_new(USHORT *buffer, U8 bytes_to_read, T_FD *pFD)
146 {
147 U8 len = MINIMUM(pFD->len, bytes_to_read);
148 if (len)
149 {
150 pFD->len = len;
151 #ifdef TI_PS_16BIT_CPY
152 api_memcpy(pFD->buf, (UBYTE*)buffer, len);
153 #else
154 memcpy(pFD->buf, (UBYTE*)buffer, len);
155 #endif
156 }
157 return len;
158 }
159