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+ Z5 Q( ~8 h! z. X
/*' F1 y, P+ U3 L$ ?" ?# E
* edma_test.c. L: f6 n! L( L$ P, u- d' \
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* brief EDMA3 Test Application | z+ r; o' a2 I+ R
*
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* This file contains EDMA3 Test code., }/ X4 q5 F1 V2 ]. s& |
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.6 ]1 F' }/ J; u4 P& U* U- B4 R
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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$ O9 j- l$ u# ?- a8 k
* published by the Free Software Foundation version 2.
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*
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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 warranty9 D4 `/ V# Z0 Z7 b! @# M
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.* ^- c; h; {+ t0 ^) ^& \* Q
*/
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#include <linux/module.h>. j v$ x( m' s) g/ }5 F
#include <linux/init.h>
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#include <linux/errno.h>/ v7 m6 |+ g' E& M2 [
#include <linux/types.h>! \, a! a9 s5 ~' ?( W
#include <linux/interrupt.h>7 A4 w% I; _3 @( X0 F0 l \
#include <asm/io.h>
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#include <linux/moduleparam.h>+ b# e4 J$ Q6 i0 c' ^. v& ]
#include <linux/sysctl.h>0 q3 O$ R; M/ y5 |5 L4 h7 }' e, ]
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>5 N0 K& h3 \# \0 k
#include <mach/hardware.h>0 H/ i2 R8 i1 Q4 s1 q
#include <mach/irqs.h>( l i1 p2 G2 F6 p9 C" v" W2 M' }
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG6 f9 E5 p: C- s
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS), e, k& s6 a/ u8 U# Z
#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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#else) g. K% C2 c" l# ?2 ^
#define DMA_PRINTK( x... ): m3 x7 N% E2 Q) M7 `; Z
#define DMA_FN_IN
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#define DMA_FN_OUT, _ I! Q& m& l' |9 Y( Y
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3& v# t+ n' y, e2 b
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 215 ^8 G$ u+ r$ I! ?1 R5 o5 Q1 [
#define TCCHEN_SHIFT 22. a3 ~, r |' I' ~- X3 y: a
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;0 q* A8 P% d% U7 ]& w, C
static volatile int irqraised2 = 0;$ v& q( Y, u, c2 }- J! M
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) R& j' O8 m$ u+ U) i2 i+ n% M
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' P1 ]+ z: W, J) V
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;3 k% r9 z7 }1 c* i
dma_addr_t dmaphysdest1 = 0;0 f0 E. `6 O4 v7 j3 X
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;" L3 t( i1 W& H: S& B# B5 \+ w
char *dmabufdest1 = NULL;! ?* ]6 G g0 l1 h t# D
char *dmabufdest2 = NULL;
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static int acnt = 512;
static int bcnt = 8;& I/ k/ b2 M, Y0 P2 a" [
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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