FreeCalypso > hg > tcs211-pirelli

comparison chipsetsw/drivers/drv_core/dma/sys_dma_it.c @ 0:509db1a7b7b8

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initial import: leo2moko-r1
author Space Falcon <falcon@ivan.Harhan.ORG>
date Mon, 01 Jun 2015 03:24:05 +0000
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-1:000000000000 0:509db1a7b7b8
1 /* @(#) nom : sys_dma_it.c SID: 1.2 date : 05/23/03 */
2 /* Filename: sys_dma_it.c */
3 /* Version: 1.2 */
4 /******************************************************************************
5 * WIRELESS COMMUNICATION SYSTEM DEVELOPMENT
6 *
7 * (C) 2002 Texas Instruments France. All rights reserved
8 *
9 * Author : Guillaume Leterrier
10 * Francois Amand
11 *
12 *
13 * Important Note
14 * --------------
15 *
16 * This S/W is a preliminary version. It contains information on a product
17 * under development and is issued for evaluation purposes only. Features
18 * characteristics, data and other information are subject to change.
19 *
20 * The S/W is furnished under Non Disclosure Agreement and may be used or
21 * copied only in accordance with the terms of the agreement. It is an offence
22 * to copy the software in any way except as specifically set out in the
23 * agreement. No part of this document may be reproduced or transmitted in any
24 * form or by any means, electronic or mechanical, including photocopying and
25 * recording, for any purpose without the express written permission of Texas
26 * Instruments Inc.
27 *
28 ******************************************************************************
29 *
30 * FILE NAME: sys_dma_it.c
31 *
32 *
33 * PURPOSE: Interruption DMA drivers for CALYPSO PLUS.
34 *
35 *
36 *
37 * FILE REFERENCES:
38 *
39 * Name IO Description
40 * ------------- -- ---------------------------------------------
41 *
42 *
43 *
44 * EXTERNAL VARIABLES:
45 *
46 * Source:
47 *
48 * Name Type IO Description
49 * ------------- --------------- -- ------------------------------
50 *
51 *
52 *
53 * EXTERNAL REFERENCES:
54 *
55 * Name Description
56 * ------------------ -------------------------------------------------------
57 *
58 *
59 *
60 * ABNORMAL TERMINATION CONDITIONS, ERROR AND WARNING MESSAGES:
61 *
62 *
63 *
64 * ASSUMPTION, CONSTRAINTS, RESTRICTIONS:
65 *
66 *
67 *
68 * NOTES:
69 *
70 *
71 *
72 * REQUIREMENTS/FUNCTIONAL SPECIFICATION REFERENCES:
73 *
74 *
75 *
76 *
77 * DEVELOPMENT HISTORY:
78 *
79 * Date Name(s) Version Description
80 * ----------- -------------- ------- -------------------------------------
81 * 23-Oct-2002 G.Leterrier 0.0.1 First implementation
82 *
83 * ALGORITHM:
84 *
85 *
86 *****************************************************************************/
87
88 #include "chipset.cfg"
89
90 #if (CHIPSET == 12)
91
92 #include "sys_dma.h"
93
94
95 /*****************************************************************************/
96 /* global variable definition */
97 /***************************************************************************/
98
99
100 /* Array of pointer on call back function with argument SYS_UWORD16. */
101 /* This argument is the value of the status IT register of the channel which has generated the IT event. */
102 /* The size of the array is defined by the number of DMA channel available on the device */
103
104
105
106 T_DMA_CALL_BACK pf_dma_call_back_address[C_DMA_NUMBER_OF_CHANNEL]=
107 {f_dma_default_call_back_it,
108 f_dma_default_call_back_it,
109 f_dma_default_call_back_it,
110 f_dma_default_call_back_it,
111 f_dma_default_call_back_it,
112 f_dma_default_call_back_it,
113 };
114
115
116
117 /******************************************************************************
118 *
119 * FUNCTION NAME:f_dma_interrupt_manager
120 * The function is called when a DMA interrupt event occurs on the ARM interrupt handler.
121 *
122 * ARGUMENT LIST:
123 *
124 * Argument Type IO Description
125 * ---------- ---------- -- -------------------------------------------
126 * none
127 *
128 *
129 * RETURN VALUE: none
130 *
131 *****************************************************************************/
132 void f_dma_interrupt_manager(void)
133 {
134
135 SYS_UWORD16 d_dma_isr;
136 SYS_UWORD8 d_dma_index=0;
137 /* MASK to eliminate interruption from channel allocation to DSP and secure channel allocated to ARM */
138 d_dma_isr=C_DMA_ISR_REG & (~C_DMA_CAR_REG) & (~C_DMA_SCR_REG);
139
140
141
142 /* shift ISR register from channel 0 to channel n in order to determine the channel with interrrupt active*/
143
144 for (d_dma_index;d_dma_index<C_DMA_NUMBER_OF_CHANNEL;d_dma_index++) /* end condition need to be checked */
145 {
146 if ((d_dma_isr & 0x0001)==1)
147 {
148 pf_dma_call_back_address[d_dma_index](F_DMA_GET_CHANNEL_IT_STATUS(d_dma_index));
149 } /* JUMP to the call back function with the status register in argument */
150 d_dma_isr >>=1;
151 }
152
153 }
154
155
156 /******************************************************************************
157 *
158 * FUNCTION NAME:f_dma_secure_interrupt_manager
159 * The function is called when a secure DMA interrupt event occurs on the ARM interrupt handler.
160 *
161 * ARGUMENT LIST:
162 *
163 * Argument Type IO Description
164 * ---------- ---------- -- -------------------------------------------
165 * none
166 *
167 *
168 * RETURN VALUE: none
169 *
170 *****************************************************************************/
171 void f_dma_secure_interrupt_manager(void)
172 {
173
174 SYS_UWORD16 d_dma_isr;
175 SYS_UWORD8 d_dma_index=0;
176 /* MASK to eliminate interruption from channel allocation to DSP and non-secure channel allocated to ARM */
177 d_dma_isr=C_DMA_ISR_REG & (~C_DMA_CAR_REG) & (C_DMA_SCR_REG);
178
179 /* shift ISR register from channel 0 to channel n in order to determine the channel with interrrupt active*/
180
181 for (d_dma_index;d_dma_index<C_DMA_NUMBER_OF_CHANNEL;d_dma_index++) /* end condition need to be checked */
182 {
183 if ((d_dma_isr & 0x0001)==1)
184 {
185 pf_dma_call_back_address[d_dma_index](F_DMA_GET_CHANNEL_IT_STATUS(d_dma_index));
186 } /* JUMP to the call back function with the status register in argument */
187 d_dma_isr >>=1;
188 }
189
190 }
191
192
193 /******************************************************************************
194 *
195 * FUNCTION NAME:f_dma_default_call_back_it
196 * The address of that function will be called by default
197 * by the DMA interrupt handler, if no call-back function has been defined yet on this channel
198 *
199 * ARGUMENT LIST:
200 *
201 * Argument Type IO Description
202 * ---------- ---------- -- -------------------------------------------
203 * d_dma_channel_status_it SYS_UWORD16 I contains a default IT status of the channel from which the event occurs.
204 *
205 *
206 * RETURN VALUE: none
207 *
208 *****************************************************************************/
209 void f_dma_default_call_back_it(SYS_UWORD16 d_dma_channel_it_status)
210 {
211 }
212
213
214
215
216
217
218 #endif /* (CHIPSET == 12) */
219