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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/*; H' Z D. B. ]
* edma_test.c/ [+ `$ Z C% l6 Q- i u
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.. i* s" U1 N V7 x, u4 \( p
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE) J/ d | t: ~1 |* s4 m& D
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE. }% n3 C8 D: n% ]
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( _! ]; O/ e7 X& ]% a
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* This program is free software; you can redistribute it and/or5 ^7 h- n' @ d! ?
* modify it under the terms of the GNU General Public License as( L V& b' d! k) F/ E' P7 b
* published by the Free Software Foundation version 2.6 L& m' E/ w" H* ~3 s0 d
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any+ P! @& e1 L7 [& [
* kind, whether express or implied; without even the implied warranty& r2 N: W! s/ |
* 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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#include <linux/module.h>
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#include <linux/init.h>' x4 A5 I* @. H1 c6 ^* f/ |
#include <linux/errno.h>" a) K2 @/ Q0 Z) S4 W: D
#include <linux/types.h>
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#include <linux/interrupt.h> K5 U( s9 ^# N1 W% q1 M8 ?
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>- p+ | k% F( p* H, e8 J3 u
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h> S/ y: y+ _* x) R, r* i( b+ G r, r. i
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#undef EDMA3_DEBUG8 S3 Y5 q/ g1 W9 X& q4 }) K- A
/*#define EDMA3_DEBUG*/& t; h: M' N* x* B' T8 Y' q4 z& `
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#ifdef EDMA3_DEBUG8 F% X7 S3 @, ?) q5 W j
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)1 x* _4 w2 P* W6 J
#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 g* ^/ l% J8 m& U, w* [
#else; ~8 X7 P3 Y L0 R6 g9 d. c
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT& Y: N# _0 y7 p/ R
#endif @- p: N# [8 Q! Q/ r! U
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)' |1 E& y% \, g) Z
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 207 m4 A0 C Z" [" ?+ l5 a5 H! k
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23/ B3 a0 Q# R; ^7 R# x5 ?
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;: m) l: r5 {& ~8 }% G4 x
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" ^1 W8 o0 ^3 V% c- K
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) W2 I- i/ R' O
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: Q. _' ^( G- l+ ~7 D: a
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dma_addr_t dmaphyssrc1 = 0;, U8 n) t1 O5 w% R2 }6 }8 U
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;) f/ \9 l/ \& Q, \. }) o
char *dmabufsrc2 = NULL;# }1 `' c7 i6 L
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;* f7 _6 E. i) F- J1 f* S: ]
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module_param(acnt, int, S_IRUGO);* ^+ i: c H X# n
module_param(bcnt, int, S_IRUGO);3 e# E2 o1 }0 f; ^- O8 o; w! b
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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