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
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* edma_test.c
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*
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* brief EDMA3 Test Application/ j; ] Q) _+ w* F% R. z6 H6 `) A3 {, P
*
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* This file contains EDMA3 Test code.9 V9 k# c: i; `9 ^
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE2 @- Q! ?) [. I+ @& O" g! q
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT% W1 s0 V/ a: C4 |$ w
* TO CHANGE.: q; \; W1 Y' T! O
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or5 ^) R3 f& E' p f8 f3 M# Q
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2." i1 G- f, j( E9 D$ W" t! X7 m
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any* Y6 Y- L$ M) W
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; x. E* x! X2 Z; S9 l% A! z2 u/ w
* GNU General Public License for more details.
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*/
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#include <linux/module.h>+ p" a4 \3 G+ O& h& u {$ ]
#include <linux/init.h>: m. [' ^) R! ^6 @6 c, }# v
#include <linux/errno.h>
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#include <linux/types.h>) L. G |, {0 I$ v7 L2 v+ u
#include <linux/interrupt.h># g4 E3 O! J4 q
#include <asm/io.h>( }2 f/ _1 F$ K. C6 J% s& E
#include <linux/moduleparam.h>' [3 {( D2 Q5 Y# c( j# d8 ~
#include <linux/sysctl.h>
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#include <linux/mm.h>- |( |6 a$ G: ]8 k1 X/ n
#include <linux/dma-mapping.h>
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#include <mach/memory.h>" K8 r Q5 _& Y7 ?! g1 V+ _! m$ n2 P
#include <mach/hardware.h>( ]9 n( U7 [% a/ z8 D; p+ s+ a
#include <mach/irqs.h>3 C1 Y1 ~6 e8 @: v7 I' |* a
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG0 }5 O8 B8 f8 T, q; E+ H. u" V. Y
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG1 H0 r0 ]! A! C6 I
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS): ^! q6 S7 I# L; q z) Z
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ f7 G0 m; X1 ^, s1 a# [, {( w
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )" [' I! n' z' A; H! S
#define DMA_FN_IN
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#define DMA_FN_OUT1 b4 ?: _0 h7 z" j" _5 ^! P
#endif( H2 ?" c, z$ {2 @4 v+ }
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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
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#define ITCINTEN_SHIFT 21; C, z, _6 \9 Y ?$ e- _
#define TCCHEN_SHIFT 22. B# G; t9 F9 j/ S/ I
#define ITCCHEN_SHIFT 23+ `( d2 F/ f2 c X
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;) ^8 w* H% h6 j7 t3 L7 n, P
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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);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% R; o& p- U7 x. e! s( o( c, {' \
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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;$ h$ z% @% h2 G' G1 e
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;2 v: T. e, M* Y
char *dmabufsrc2 = NULL;* @' X% x7 v+ w( I, Q
char *dmabufdest1 = NULL;5 v# ^" s: j% @
char *dmabufdest2 = NULL;
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static int acnt = 512;% F5 P5 S* j* h8 \" x0 R& Z* w
static int bcnt = 8;
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static int ccnt = 8;' {6 L4 p: z5 a6 l. h
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module_param(acnt, int, S_IRUGO);) w7 C% h) G. ~# k
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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