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 Y8 r6 A' X( ~4 S1 Y% O- r* K
/*2 K, p$ }3 F0 {+ F4 q
* edma_test.c/ _" F4 |; }# T. i* x" o
*! b% G. n6 C; O
* brief EDMA3 Test Application
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*. a9 H( @9 }1 E& `) L ?0 X
* This file contains EDMA3 Test code.4 u( d+ X# w" }% \
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE A4 Y/ K3 o- M: p2 t
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE./ K; {, a" g1 S5 Y6 p 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* a# O' L9 y y: C6 `
* modify it under the terms of the GNU General Public License as' V" q8 U% X' ^2 E. G! j- r
* 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 warranty# q: ]3 h$ G' j8 b& y' M! `- o8 W1 q
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.2 H! d4 _* W: s& J- @. n2 D) K: k
*/# `1 X% V" s0 ~
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#include <linux/module.h>) m* P: v; t0 J. Z0 ]
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>4 Q* a* r& N' c
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>5 F: s' Z" F0 w3 N
#include <linux/sysctl.h>
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#include <linux/mm.h>& a0 t Y# S' T) z7 N+ M
#include <linux/dma-mapping.h>
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#include <mach/memory.h>. _7 t7 M# N) M: @: ^, i
#include <mach/hardware.h>- F+ A, F/ l2 N9 a* D! r2 \
#include <mach/irqs.h>5 j) l$ u: I3 h' g* A
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG- H" Z. G- k6 A& l5 v
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#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__)3 p1 V: G0 n; W# s
#else
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#define DMA_PRINTK( x... )/ b% ~: ?# A! A5 q8 O- \
#define DMA_FN_IN/ a! \6 Y6 R* c" \: j9 e H! p
#define DMA_FN_OUT0 }9 j! G4 ?. o G& \
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)' x6 w1 O. E9 {
#define STATIC_SHIFT 35 x$ \5 t' a' l* W
#define TCINTEN_SHIFT 20# E4 c, S. |. z1 u( v
#define ITCINTEN_SHIFT 21 v$ h3 p0 X: ]( ^
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;" J0 v; q- U8 R f* w2 q+ ^5 I0 e1 {
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);2 C# _! y& M* m4 c3 h, E5 g( D% I: P7 N
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! P5 Y2 F, X/ e) }5 `0 `3 l
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: A+ ?; [! `8 z
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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;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;3 h% [! x8 y- V( g4 E, W
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;# j) M( l1 D* v* {/ W% ?
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static int acnt = 512; @8 y, ]1 ] q$ p5 Z" f8 c/ i1 X
static int bcnt = 8;
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static int ccnt = 8;9 `9 {# h0 m! x! x7 }0 p
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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