ti_edma3.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2012 Damjan Marion <dmarion@Freebsd.org>
    5  * All rights reserved.
    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  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #ifndef _TI_EDMA3_H_
   32 #define _TI_EDMA3_H_
   33 
   34 /* Direct Mapped EDMA3 Events */
   35 #define TI_EDMA3_EVENT_SDTXEVT1                 2
   36 #define TI_EDMA3_EVENT_SDRXEVT1                 3
   37 #define TI_EDMA3_EVENT_SDTXEVT0                 24
   38 #define TI_EDMA3_EVENT_SDRXEVT0                 25
   39 
   40 struct ti_edma3cc_param_set {
   41         struct {
   42                 uint32_t sam:1;         /* Source address mode */
   43                 uint32_t dam:1;         /* Destination address mode */
   44                 uint32_t syncdim:1;     /* Transfer synchronization dimension */
   45                 uint32_t static_set:1;  /* Static Set */
   46                 uint32_t :4;
   47                 uint32_t fwid:3;        /* FIFO Width */
   48                 uint32_t tccmode:1;     /* Transfer complete code mode */
   49                 uint32_t tcc:6;         /* Transfer complete code */
   50                 uint32_t :2;
   51                 uint32_t tcinten:1;     /* Transfer complete interrupt enable */
   52                 uint32_t itcinten:1;    /* Intermediate xfer completion intr. ena */
   53                 uint32_t tcchen:1;      /* Transfer complete chaining enable */
   54                 uint32_t itcchen:1;     /* Intermediate xfer completion chaining ena */
   55                 uint32_t privid:4;      /* Privilege identification */
   56                 uint32_t :3;
   57                 uint32_t priv:1;        /* Privilege level */
   58         } opt;
   59         uint32_t src;                   /* Channel Source Address */
   60         uint16_t acnt;                  /* Count for 1st Dimension */
   61         uint16_t bcnt;                  /* Count for 2nd Dimension */
   62         uint32_t dst;                   /* Channel Destination Address */
   63         int16_t srcbidx;                /* Source B Index */
   64         int16_t dstbidx;                /* Destination B Index */
   65         uint16_t link;                  /* Link Address */
   66         uint16_t bcntrld;               /* BCNT Reload */
   67         int16_t srccidx;                /* Source C Index */
   68         int16_t dstcidx;                /* Destination C Index */
   69         uint16_t ccnt;                  /* Count for 3rd Dimension */
   70         uint16_t reserved;              /* Reserved */
   71 };
   72 
   73 void ti_edma3_init(unsigned int eqn);
   74 int ti_edma3_request_dma_ch(unsigned int ch, unsigned int tccn, unsigned int eqn);
   75 int ti_edma3_request_qdma_ch(unsigned int ch, unsigned int tccn, unsigned int eqn);
   76 int ti_edma3_enable_transfer_manual(unsigned int ch);
   77 int ti_edma3_enable_transfer_qdma(unsigned int ch);
   78 int ti_edma3_enable_transfer_event(unsigned int ch);
   79 
   80 void ti_edma3_param_write(unsigned int ch, struct ti_edma3cc_param_set *prs);
   81 void ti_edma3_param_read(unsigned int ch, struct ti_edma3cc_param_set *prs);
   82 
   83 #endif /* _TI_EDMA3_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/arm/ti/ti_edma3.h

FreeBSD/Linux Kernel Cross Reference
sys/arm/ti/ti_edma3.h