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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/*
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* edma_test.c( d3 _; ?9 E6 c% E, Q
*
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* brief EDMA3 Test Application% J% u8 ?# g& X- P% E6 z5 _
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* This file contains EDMA3 Test code.9 N) J1 L! {3 [- U+ I; I
*
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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 SUBJECT2 S* n( e# d7 T7 v
* TO CHANGE.4 p" V5 \0 L" R, X
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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! t# _5 F0 B& A/ H: S
* modify it under the terms of the GNU General Public License as9 s9 f$ V; R0 j- l6 _
* published by the Free Software Foundation version 2. O! r: f, @% h0 e; T( ?6 a4 o
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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
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>, P2 ]: J) |1 B( \1 k
#include <linux/init.h>% q4 ~, }* G+ s- ^" h( G
#include <linux/errno.h># m3 w+ i, {' k. i. F( A, }5 Q, U' i) {
#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>, J8 O0 x' F# h+ F) W$ q
#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>
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#include <mach/hardware.h>
#include <mach/irqs.h>' } g5 V. ^+ ^) h: Q" p5 Y
#include <asm/hardware/edma.h>! n; A t+ {4 H
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/% }# v/ I6 ]# Z* u: P8 O+ R
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 F! z) e$ U( |; E$ \7 k6 i7 l+ K9 G1 [
#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
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN' G0 z* x; [+ \& w! R+ @* g
#define DMA_FN_OUT
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#endif/ t' S: f1 N+ Y- y9 T5 P
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3' i }& \" d9 E: |& p- u6 {
#define TCINTEN_SHIFT 20$ P; t% C1 V$ w A
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23' q' d5 ]/ g/ {2 \$ c. C/ g
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static volatile int irqraised1 = 0;, n4 j4 S" f, u4 o
static volatile int irqraised2 = 0;# Q$ F; M$ Q5 z8 T# f) m2 a! B
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! I0 j8 @; k- E
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;
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dma_addr_t dmaphyssrc2 = 0;& K4 j7 P( F) w: I K& j
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;9 l* |5 w& h, e* N
char *dmabufsrc2 = NULL;" D. Y& F' N5 z, v- v" y: H1 F9 P
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;
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module_param(acnt, int, S_IRUGO);$ f$ d5 N# m$ D% q8 s) C) s
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