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$ O4 w% g, x: B: U' m0 A
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* edma_test.c( h9 x* {% ?- k- ^3 u9 r
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.1 c# C, a! ?5 N% }+ B* n
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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 SUBJECT1 K5 k0 N4 U# \- D9 P
* TO CHANGE.- a# L, d }2 S1 ?, ?
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; @+ |3 F- d! B% u/ n l
*
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* This program is free software; you can redistribute it and/or2 X: m% I6 k2 G: F
* 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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* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 n, C8 c2 f7 a7 a; c0 M
* 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.. U9 J9 W& x! j0 ?6 }/ M
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>; m% o I" L7 q& ], l' y
#include <linux/types.h>9 ^- z/ L) s. X y
#include <linux/interrupt.h>9 D# |, `% L9 U' `- f
#include <asm/io.h>
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#include <linux/moduleparam.h>/ h9 v* G r1 A" B
#include <linux/sysctl.h>& G) A" ]5 d, x4 ^$ q" }3 @
#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>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG( Y- m4 F& K" u
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG% I7 c9 N2 M! D) S% H
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 e# S- Q' S: e2 a6 i: r E$ z. ^3 H
#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
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)3 O7 p6 _9 h6 r8 |8 y2 Z
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21- P* V/ C/ v( Z* N3 g* h8 D
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;8 Z+ G. e, ~ s0 h8 ], ~9 q5 X- T
static volatile int irqraised2 = 0;, X$ h* M* L# B8 s) b/ e
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ J; X* T3 M" K/ r- c
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;$ N. P' V% z% K5 X1 w0 m
dma_addr_t dmaphyssrc2 = 0;4 k o0 V, P; i* y& s1 Q6 j
dma_addr_t dmaphysdest1 = 0;% r" G9 \) ^2 E" l9 z1 ?* ]1 X H* W+ f
dma_addr_t dmaphysdest2 = 0;) Q% k. G6 ?' i0 ~+ _. j2 n
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char *dmabufsrc1 = NULL;+ E$ x0 D2 B! x4 d1 S+ T
char *dmabufsrc2 = NULL;* h6 p5 F2 { E7 o, B& z+ M
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; n/ s) ]$ E) |
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module_param(acnt, int, S_IRUGO);* m& s/ R7 b1 f: D# Z
module_param(bcnt, int, S_IRUGO);" R' z4 U) m1 x& K# H* O# g. H
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