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Cleaned EDMA3 Driver Sample Initialization library
[keystone-rtos/edma3_lld.git] / packages / ti / sdo / edma3 / drv / sample / src / platforms / sample_da830_int_reg.c
1 /*
2  * bios6_int_register_tci_6498.c
3  *
4  * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
5  *
6  *
7  *  Redistribution and use in source and binary forms, with or without
8  *  modification, are permitted provided that the following conditions
9  *  are met:
10  *
11  *    Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  *
14  *    Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the
17  *    distribution.
18  *
19  *    Neither the name of Texas Instruments Incorporated nor the names of
20  *    its contributors may be used to endorse or promote products derived
21  *    from this software without specific prior written permission.
22  *
23  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
29  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
33  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34  *
35 */
37 #include <ti/sysbios/ipc/Semaphore.h>
38 #include <ti/sysbios/family/c64p/EventCombiner.h>
39 #include <ti/sysbios/family/c64p/Hwi.h>
41 #include <ti/sdo/edma3/drv/sample/bios6_edma3_drv_sample.h>
43 // #include <stdio.h>
44 /**
45   * EDMA3 TC ISRs which need to be registered with the underlying OS by the user
46   * (Not all TC error ISRs need to be registered, register only for the
47   * available Transfer Controllers).
48   */
49 void (*ptrEdma3TcIsrHandler[EDMA3_MAX_TC])(unsigned int arg) =
50                                                 {
51                                                 &lisrEdma3TC0ErrHandler0,
52                                                 &lisrEdma3TC1ErrHandler0,
53                                                 &lisrEdma3TC2ErrHandler0,
54                                                 &lisrEdma3TC3ErrHandler0,
55                                                 &lisrEdma3TC4ErrHandler0,
56                                                 &lisrEdma3TC5ErrHandler0,
57                                                 &lisrEdma3TC6ErrHandler0,
58                                                 &lisrEdma3TC7ErrHandler0,
59                                                 };
61 extern unsigned int ccXferCompInt[][EDMA3_MAX_REGIONS];
62 extern unsigned int ccErrorInt[];
63 extern unsigned int tcErrorInt[][EDMA3_MAX_TC];
64 extern unsigned int numEdma3Tc[];
66 /**
67  * Variables which will be used internally for referring the hardware interrupt
68  * for various EDMA3 interrupts.
69  */
70 extern unsigned int hwIntXferComp;
71 extern unsigned int hwIntCcErr;
72 extern unsigned int hwIntTcErr;
74 extern unsigned int dsp_num;
76 /**  To Register the ISRs with the underlying OS, if required. */
77 void registerEdma3Interrupts (unsigned int edma3Id)
78     {
79     static UInt32 cookie = 0;
80     unsigned int numTc = 0;
82     /* Disabling the global interrupts */
83     cookie = Hwi_disable();
85     /* Enable the Xfer Completion Event Interrupt */
86     EventCombiner_dispatchPlug(ccXferCompInt[edma3Id][dsp_num],
87                                                 (EventCombiner_FuncPtr)(&lisrEdma3ComplHandler0),
88                                 NULL, 1);
89     EventCombiner_enableEvent(ccXferCompInt[edma3Id][dsp_num]);
91     /* Enable the CC Error Event Interrupt */
92     EventCombiner_dispatchPlug(ccErrorInt[edma3Id],
93                                                 (EventCombiner_FuncPtr)(&lisrEdma3CCErrHandler0),
94                                                 NULL, 1);
95     EventCombiner_enableEvent(ccErrorInt[edma3Id]);
97     /* Enable the TC Error Event Interrupt, according to the number of TCs. */
98     while (numTc < numEdma3Tc[edma3Id])
99             {
100         EventCombiner_dispatchPlug(tcErrorInt[edma3Id][numTc],
101                             (EventCombiner_FuncPtr)(ptrEdma3TcIsrHandler[numTc]),
102                             NULL, 1);
103         EventCombiner_enableEvent(tcErrorInt[edma3Id][numTc]);
104         numTc++;
105         }
107    /**
108     * Enabling the HWI_ID.
109     * EDMA3 interrupts (transfer completion, CC error etc.)
110     * correspond to different ECM events (SoC specific). These ECM events come
111     * under ECM block XXX (handling those specific ECM events). Normally, block
112     * 0 handles events 4-31 (events 0-3 are reserved), block 1 handles events
113     * 32-63 and so on. This ECM block XXX (or interrupt selection number XXX)
114     * is mapped to a specific HWI_INT YYY in the tcf file. So to enable this
115     * mapped HWI_INT YYY, one should use the corresponding bitmask in the
116     * API C64_enableIER(), in which the YYY bit is SET.
117     */
118         Hwi_enableInterrupt(hwIntXferComp);
119         Hwi_enableInterrupt(hwIntCcErr);
120         Hwi_enableInterrupt(hwIntTcErr);
122     /* Restore interrupts */
123     Hwi_restore(cookie);
124     }
126 /**  To Unregister the ISRs with the underlying OS, if previously registered. */
127 void unregisterEdma3Interrupts (unsigned int edma3Id)
128     {
129         static UInt32 cookie = 0;
130     unsigned int numTc = 0;
132     /* Disabling the global interrupts */
133     cookie = Hwi_disable();
135     /* Disable the Xfer Completion Event Interrupt */
136         EventCombiner_disableEvent(ccXferCompInt[edma3Id][dsp_num]);
138     /* Disable the CC Error Event Interrupt */
139         EventCombiner_disableEvent(ccErrorInt[edma3Id]);
141     /* Enable the TC Error Event Interrupt, according to the number of TCs. */
142     while (numTc < numEdma3Tc[edma3Id])
143         {
144         EventCombiner_disableEvent(tcErrorInt[edma3Id][numTc]);
145         numTc++;
146         }
148     /* Restore interrupts */
149     Hwi_restore(cookie);
150     }