OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application2 D: l! Z4 R# g9 y% x0 \
/*
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* edma_test.c% q _1 A- |& T u
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE) H; T R: P7 P" S: b
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" W4 w1 z/ t4 a0 C
* TO CHANGE.5 W) Z; Y& F+ E9 U L! h
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/* w: D" } {7 S5 N( D
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* This program is free software; you can redistribute it and/or. O/ T6 m7 q3 X2 L5 _* d6 A
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.$ ?% K$ Z; v. s) _
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.( E( m* E: M: X) \: j
*/) @% \$ I$ O3 w. t) u. \
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#include <linux/module.h>! S$ n7 j6 b( Y/ j: O% \( h r+ K
#include <linux/init.h>% m+ u; a: p/ `% A" e5 b' [' ~
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>2 s8 x' p4 ^9 W" Y9 P5 ~! S
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>" E6 I V7 H I/ F
#include <linux/mm.h>7 Q+ h9 h g( {5 N) C0 s3 _
#include <linux/dma-mapping.h>
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#include <mach/memory.h>; n; A) k; y3 h) N
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/8 s+ k8 n9 O m$ L/ e
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#ifdef EDMA3_DEBUG# G& A2 b0 j8 ~2 B: v; s% d
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 N8 p, }% D2 A
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )7 _, k. o: \$ l, J" j+ H
#define DMA_FN_IN" I! q4 t" ?% T
#define DMA_FN_OUT$ e# F8 V+ G$ y$ S
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20) p8 w p" y% u% L+ s, ` h
#define ITCINTEN_SHIFT 21$ _3 y7 u% V8 g9 m# F
#define TCCHEN_SHIFT 22/ r; z l3 P2 z
#define ITCCHEN_SHIFT 23/ b: A' m! c" f6 x
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, c; x2 o) q. {; }
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;6 o& Q" |* A" G
char *dmabufsrc2 = NULL;6 ~( |6 [0 A0 Q8 r" x) C
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;- X+ L, V' F! u
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static int acnt = 512;
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static int bcnt = 8;8 ~! X# K h; _, D( p. j
static int ccnt = 8;/ E8 G6 T; T8 ^0 V, n! [
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module_param(acnt, int, S_IRUGO);* n1 ?1 {$ \7 U: m
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动