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( z, C- [" Z8 h K/ N7 F
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* edma_test.c# S! @4 F9 t' r" C" t. ?" [% k
*
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* brief EDMA3 Test Application8 U a: U4 G8 U+ D6 ~' B% {
*
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* This file contains EDMA3 Test code.8 O6 b; W1 {& ?1 O3 c
*
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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
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* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 l& V$ A9 S0 n7 X8 ~
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* 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 any5 z N/ A( Y' F" Z- X
* kind, whether express or implied; without even the implied warranty" w. a; }) o, {: n
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.% Z! { d# j* R0 y9 |- F7 ]! `- T9 `
*/
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#include <linux/module.h>, d4 i; D' H' L0 N+ p
#include <linux/init.h>6 m# t* r9 c5 t# v6 [3 L% m3 @
#include <linux/errno.h>
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#include <linux/types.h>! p8 f I) W. q
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>% b G! k% G, s! e& F# _5 ~2 ~
#include <linux/mm.h>: J+ B( M9 T* }- \; X
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>9 @' X! q( A0 D3 ^) W7 U5 T4 H3 ]
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG/ C T. C$ U6 { x/ G* x1 B
/*#define EDMA3_DEBUG*/- i' s0 B: c G+ C
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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__)9 {) t: r8 H3 n, m! `3 w
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else0 O1 }- ]' j' f1 O0 d3 e& w
#define DMA_PRINTK( x... )
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#define DMA_FN_IN% s$ ]$ a- U7 r9 L2 ]
#define DMA_FN_OUT; k, j& l0 |, {
#endif. m' L" S: U! W' C" t0 l
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3# R' V/ T1 p0 C
#define TCINTEN_SHIFT 20/ n9 `1 x5 X8 h- m/ c
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23& p, C1 }/ C$ }7 f2 v0 \
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static volatile int irqraised1 = 0;$ w) B) z9 F! t8 ^
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);
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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);1 Y, @! p0 U: m' z' t# ~
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;, k$ _0 W* N1 V5 c7 y6 T8 }/ g
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;* ^+ ]* j. J2 D5 G/ T6 T
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char *dmabufsrc1 = NULL;$ Q+ y. C, x3 [9 \' B' z) y) E
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;0 v7 B+ {8 [! O3 F# M; j8 r( G
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;1 @. @) N1 G& ?( p, t& \# A
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module_param(acnt, int, S_IRUGO); g+ s0 v5 m/ p4 ?# \. W: \0 P
module_param(bcnt, int, S_IRUGO);; a# O/ A1 w* t' P! K# U$ G! c8 r
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