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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/*" A$ E2 {+ j1 }) t# j8 Q
* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.6 c4 o" R5 t0 x/ f) H& Q
*
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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& R0 h/ z9 ]! W% {
* TO CHANGE.5 i' q- A" ~+ _. D; |7 `! h
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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/or) L3 N& G' }' ]: {
* modify it under the terms of the GNU General Public License as# P$ i* K, ]4 n. t1 A# c* \* {
* published by the Free Software Foundation version 2.
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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' V* ]9 Z6 f& z9 ]+ s/ ~! r
* GNU General Public License for more details.
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*/; I, M0 g2 Z- H+ h* n6 U
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#include <linux/module.h>. r0 c5 L* W8 r% Z* j- J H2 |
#include <linux/init.h>1 T7 X$ M1 A5 G8 w& q5 ?$ S$ u
#include <linux/errno.h>7 h6 D* i( d; Q' X. Z% Z
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>& l6 O G' |9 U4 O
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>: R: N: R) q8 g( X
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#include <mach/memory.h>5 }8 v2 `5 v; W
#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- c' J4 \2 [1 W0 G+ B2 F
/*#define EDMA3_DEBUG*/' |6 e/ A+ Y* G# g) v6 G
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ s* e" B+ X2 x; ^* F/ F O# `
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)0 V& a9 q8 X- [+ M
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)( e+ _1 b; A7 p: W3 k) V* E
#else' F+ s* g& X8 u# ?' o' @+ q( t/ t+ G
#define DMA_PRINTK( x... )
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#define DMA_FN_IN- w8 {" E% M4 `, Y
#define DMA_FN_OUT
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#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 204 p" m2 o3 t& j/ k7 p5 S0 {
#define ITCINTEN_SHIFT 21- U* \, K9 ~9 g) o6 ~ F `8 x1 j6 {
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 239 P! p7 B8 o$ B3 H( b" `
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static volatile int irqraised1 = 0;6 k' _; R" f0 H2 c! j- A3 f8 q
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);1 r- h: e+ g2 }: ?8 m* t0 W
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- C: C7 W/ I
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dma_addr_t dmaphyssrc1 = 0;3 y& d/ T7 @# w! x- p+ G) B
dma_addr_t dmaphyssrc2 = 0;/ w% D* J/ r6 l4 c: _ T2 R
dma_addr_t dmaphysdest1 = 0;9 I; P: v7 P7 e5 a- T
dma_addr_t dmaphysdest2 = 0;! ]1 U$ h }1 ]* J4 T
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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;2 G, q; P6 ?/ K' H% {3 l" S5 R
static int bcnt = 8;
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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