packages/ti/sdo/edma3/rm/sample/src/platforms/sample_tci6614_int_reg.c

   1 /*
   2  * sample_tci6614_int_reg.c
   3  *
   4  * Platform specific interrupt registration and un-registration routines.
   5  *
   6  * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
   7  *
   8  *
   9  *  Redistribution and use in source and binary forms, with or without
  10  *  modification, are permitted provided that the following conditions
  11  *  are met:
  12  *
  13  *    Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  *    Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  *    Neither the name of Texas Instruments Incorporated nor the names of
  22  *    its contributors may be used to endorse or promote products derived
  23  *    from this software without specific prior written permission.
  24  *
  25  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  35  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37 */
  38
  39 #include <ti/sysbios/knl/Semaphore.h>
  40 #include <ti/sysbios/family/c64p/Hwi.h>
  41 #include <ti/sysbios/family/c64p/EventCombiner.h>
  42 #include <ti/sysbios/family/c66/tci66xx/CpIntc.h>
  43
  44 #include <ti/sdo/edma3/rm/sample/bios6_edma3_rm_sample.h>
  45
  46 extern unsigned int ccXferCompInt[][EDMA3_MAX_REGIONS];
  47 extern unsigned int ccErrorInt[];
  48 extern unsigned int tcErrorInt[][EDMA3_MAX_TC];
  49 extern unsigned int numEdma3Tc[];
  50
  51 void (*ptrEdma3TcIsrHandler[EDMA3_MAX_TC])(unsigned int arg) =
  52                                                 {
  53                                                 &lisrEdma3TC0ErrHandler0,
  54                                                 &lisrEdma3TC1ErrHandler0,
  55                                                 &lisrEdma3TC2ErrHandler0,
  56                                                 &lisrEdma3TC3ErrHandler0,
  57                                                 &lisrEdma3TC4ErrHandler0,
  58                                                 &lisrEdma3TC5ErrHandler0,
  59                                                 &lisrEdma3TC6ErrHandler0,
  60                                                 &lisrEdma3TC7ErrHandler0,
  61                                                 };
  62
  63 unsigned int hwiInterrupt = 8;
  64
  65 /* Host interrupts for transfer completion */
  66 //unsigned int ccXferHostInt[NUM_EDMA3_INSTANCES][NUM_DSPS] = {
  67 unsigned int ccXferHostInt[3][4] = {
  68                                                                                 {8u, 24u, 40u, 56u},
  69                                                                                 {9u, 25u, 41u, 57u},
  70                                                                                 {10u, 26u, 42u, 58u},
  71                                                                                 };
  72 unsigned int edma3ErrHostInt[3][4] = {
  73                                                                                 {11u, 27u, 43u, 59u},
  74                                                                                 {12u, 28u, 44u, 60u},
  75                                                                                 {13u, 29u, 45u, 61u},
  76                                                                                 };
  77
  78
  79 extern unsigned int dsp_num;
  80
  81 /**  To Register the ISRs with the underlying OS, if required */
  82 void registerEdma3Interrupts (unsigned int edma3Id)
  83     {
  84     static UInt32 cookie = 0;
  85     Int eventId = 0;    /* GEM event id */
  86         unsigned int numTc = 0;
  87
  88     /* Disabling the global interrupts */
  89     cookie = Hwi_disable();
  90
  91         /* Transfer completion ISR */
  92         CpIntc_dispatchPlug(ccXferCompInt[edma3Id][dsp_num],
  93                                                 lisrEdma3ComplHandler0,
  94                                                 edma3Id,
  95                                                 TRUE);
  96         CpIntc_mapSysIntToHostInt(0, ccXferCompInt[edma3Id][dsp_num],
  97                                                                 ccXferHostInt[edma3Id][dsp_num]);
  98         CpIntc_enableHostInt(0, ccXferHostInt[edma3Id][dsp_num]);
  99     eventId = CpIntc_getEventId(ccXferHostInt[edma3Id][dsp_num]);
 100     EventCombiner_dispatchPlug (eventId, CpIntc_dispatch,
 101                                 ccXferHostInt[edma3Id][dsp_num], TRUE);
 102         EventCombiner_enableEvent(eventId);
 103
 104         /* CC Error ISR */
 105         CpIntc_dispatchPlug(ccErrorInt[edma3Id], lisrEdma3CCErrHandler0,
 106                                                 edma3Id, TRUE);
 107         CpIntc_mapSysIntToHostInt(0, ccErrorInt[edma3Id],
 108                                                                 edma3ErrHostInt[edma3Id][dsp_num]);
 109         /* TC Error ISR */
 110     while (numTc < numEdma3Tc[edma3Id])
 111             {
 112                 CpIntc_dispatchPlug(tcErrorInt[edma3Id][numTc],
 113                                                         (CpIntc_FuncPtr )(ptrEdma3TcIsrHandler[numTc]),
 114                                                         edma3Id, TRUE);
 115                 CpIntc_mapSysIntToHostInt(0, tcErrorInt[edma3Id][numTc],
 116                                                                         edma3ErrHostInt[edma3Id][dsp_num]);
 117         numTc++;
 118         }
 119         /* Enable the host interrupt which is common for both CC and TC error */
 120         CpIntc_enableHostInt(0, edma3ErrHostInt[edma3Id][dsp_num]);
 121     eventId = CpIntc_getEventId(edma3ErrHostInt[edma3Id][dsp_num]);
 122     EventCombiner_dispatchPlug (eventId, CpIntc_dispatch,
 123                                 edma3ErrHostInt[edma3Id][dsp_num], TRUE);
 124         EventCombiner_enableEvent(eventId);
 125
 126     Hwi_enableInterrupt(hwiInterrupt);
 127
 128     /* enable the 'global' switch */
 129     CpIntc_enableAllHostInts(0);
 130
 131     /* Restore interrupts */
 132     Hwi_restore(cookie);
 133     }
 134
 135 /**  To Unregister the ISRs with the underlying OS, if previously registered. */
 136 void unregisterEdma3Interrupts (unsigned int edma3Id)
 137     {
 138     static UInt32 cookie = 0;
 139     Int eventId = 0;    /* GEM event id */
 140
 141     /* Disabling the global interrupts */
 142     cookie = Hwi_disable();
 143
 144         /* Transfer completion ISR */
 145         CpIntc_disableHostInt(0, ccXferHostInt[edma3Id][dsp_num]);
 146     eventId = CpIntc_getEventId(ccXferHostInt[edma3Id][dsp_num]);
 147         EventCombiner_disableEvent(eventId);
 148
 149         /* CC/TC Error ISR */
 150         CpIntc_disableHostInt(0, edma3ErrHostInt[edma3Id][dsp_num]);
 151     eventId = CpIntc_getEventId(edma3ErrHostInt[edma3Id][dsp_num]);
 152         EventCombiner_disableEvent(eventId);
 153
 154     /* Restore interrupts */
 155     Hwi_restore(cookie);
 156     }
 157