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- i$ X- K. T3 L l {1 ~" L
/*) J1 h2 Z! ?+ {+ d& T5 C4 u
* edma_test.c" F. a8 ]- y9 g# G7 T+ ?* H
*- u B. i" r" l9 ]
* brief EDMA3 Test Application/ I( J0 @8 {8 q6 X/ U( q6 m
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* This file contains EDMA3 Test code.$ F: g) o$ O& a6 L
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE7 ?* h8 E7 p& i! h$ u; j
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*! b2 E2 q/ @" @% Y" L4 A
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! Q |+ N F, n0 S% q$ \6 y- F o6 Z c
*, F) R8 ?1 d- J; p3 p* p. N" @
* This program is free software; you can redistribute it and/or% ]- p7 C* W. G6 |3 @
* modify it under the terms of the GNU General Public License as. d. }9 O. l) l6 { \+ T
* published by the Free Software Foundation version 2.
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** w4 s; }+ i. |$ I
* This program is distributed "as is" WITHOUT ANY WARRANTY of any1 B; X6 c* }; A, j5 T
* kind, whether express or implied; without even the implied warranty) W; u, }$ z; R
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* V. ]# s- Q4 q% i
* GNU General Public License for more details.& }, N" r& R# f# i. A
*/ B }4 R: C( } d& Q2 y- N y: |& c
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#include <linux/module.h>
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#include <linux/init.h>! u9 [9 A# }% W+ W ?' H- B" [
#include <linux/errno.h>
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#include <linux/types.h>' Y0 q9 \: F& p) p. x
#include <linux/interrupt.h>, S, L0 C J2 {* }8 Q
#include <asm/io.h>; c( J0 P9 Z6 e9 c: s$ j
#include <linux/moduleparam.h>0 m. m$ e- O! o( ^; |
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>' c- T. ^5 L% C' T8 V
#include <mach/hardware.h>
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#include <mach/irqs.h>, ^5 a2 J' j8 h; M- p {
#include <asm/hardware/edma.h>" H M% k* m' A/ n
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/8 \$ v w1 B) W
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#ifdef EDMA3_DEBUG. j2 c2 z5 o" D% i
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)% N. n* `2 f2 r6 r) d
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)) `( }& `0 U/ X
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). p+ D* t, F1 t5 f4 ]9 F
#else5 @( w8 y3 W ~0 B/ i2 |
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT9 v. N+ H5 X9 i# d+ H% e, B& {
#endif! z4 H) N0 n- t: b6 U: C" y# H2 {
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), z# P( Y+ t: K
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20; g: E) `3 S) |7 ^0 a* |# L
#define ITCINTEN_SHIFT 21! X# W$ p% Y7 W) x: W3 |
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23% S4 Y V4 Q: r6 M
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static volatile int irqraised1 = 0;: e3 P0 m" R& C
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);* g7 L6 p; D' z0 \
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);
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dma_addr_t dmaphyssrc1 = 0;: |" m- P) p( Y3 n$ G8 L! q f, y+ k
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0; A/ w& |" H$ l4 E t; a
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8; k/ t/ N7 l1 d5 G( h: L5 {
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module_param(acnt, int, S_IRUGO);& w, p" a6 d7 H' a" x! ~/ I
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