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 application' e- j8 b) N6 F1 u* P+ N
/*9 t' j. H) n5 n. W, i
* edma_test.c- c a! I0 G' s' D
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* brief EDMA3 Test Application* z! ?( O! O: I+ A! o9 E
*
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* This file contains EDMA3 Test code., S/ ^) j; v& w# j
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE5 ]* W; u2 Y7 U/ Z( i T
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.& o* o% h- O8 t
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 d7 \2 E+ b$ \" m6 `; j
*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as) {2 w+ `' g+ \ k7 W
* published by the Free Software Foundation version 2.
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*) F$ X$ q6 j! P9 f
* 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.2 p4 ?1 V. v2 @1 m/ J
*/
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#include <linux/module.h>
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#include <linux/init.h>; ]. a3 y: l2 ^9 @8 D& o
#include <linux/errno.h>* |8 t3 Z0 {6 D$ d) C/ M8 i+ j
#include <linux/types.h>4 |6 F! a9 l0 N6 ?3 L. h
#include <linux/interrupt.h>2 Z8 l& j& R# j, v- v: U) k4 d
#include <asm/io.h>* w5 O( x' K' G- T' G
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>& p& s- N, R# W% }; z0 T
#include <linux/mm.h>7 l8 ]( d5 @! ~% o m' s' k# K
#include <linux/dma-mapping.h>. v* \+ b( p4 o L0 n9 \7 O/ y
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#include <mach/memory.h>
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#include <mach/hardware.h>' y: _ {% y5 f! U9 T1 A# s* K) Q
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>. W. E' r( U& o
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#undef EDMA3_DEBUG7 w7 h% m# m' \6 ~0 o9 _# x# E
/*#define EDMA3_DEBUG*/5 G- ]! |8 f- I2 r3 H9 y0 s1 V
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* [% w* A4 M1 n: @+ G! a
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else8 X# c! g" e3 d( x9 b; w
#define DMA_PRINTK( x... )& e9 p: e2 j8 G+ ~3 t
#define DMA_FN_IN) m' s- A* G( Q# W2 F
#define DMA_FN_OUT5 x X. E' v, Q/ f
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 37 m, S/ m3 y8 d# Z
#define TCINTEN_SHIFT 20/ j9 @9 [2 \6 z$ J( W
#define ITCINTEN_SHIFT 21! n' x3 A0 g, [8 b4 `
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;6 d2 u$ l0 `! I7 w) x
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# X4 j% q0 \; u* q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( N0 V' W# s" v2 r0 l
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dma_addr_t dmaphyssrc1 = 0;' R' V/ f; j \: s" ^+ O2 ~0 J7 g0 o! ^
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;' q8 b- o1 F; W& x
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;0 _+ o6 y3 M% s3 n
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;( {7 J& S ]: B
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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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