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 application9 o4 e3 O9 ^5 t3 b- s2 H9 u3 j
/*7 C. n# T' }7 e+ L0 T
* edma_test.c
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*
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* brief EDMA3 Test Application7 K4 U0 j) ]/ ~* |7 v/ E$ H
*
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* This file contains EDMA3 Test code.2 i! w5 Y! c8 ^! R3 ]
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE3 N. o0 j) g$ x# [# k. O0 ~+ j, a
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.3 m; a7 ]! `: M7 N4 c1 @
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com// R* t- V# {8 y- M6 K; ~- L( I
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* This program is free software; you can redistribute it and/or1 D/ H% s5 x2 h' G5 V& ]/ p. e& n# {/ K
* modify it under the terms of the GNU General Public License as! N/ g4 K% X3 z0 I1 x: O
* published by the Free Software Foundation version 2." o# |2 X) P/ F9 T$ z* ^! O3 h
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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>5 c3 y9 V% a* y: P/ Q3 T
#include <linux/init.h>* j+ b5 N: U0 e6 t4 f
#include <linux/errno.h>
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#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># L! T! X- F5 S8 x
#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>; }) Z. f, z, |/ c
#include <mach/hardware.h>0 L) A/ S# {4 L/ D% E
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG( B* n; u d0 u j% p
/*#define EDMA3_DEBUG*/* u& q8 f0 Z7 R( E: Y- Y) i
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)4 @6 n9 `; C# S0 O. W5 a. N
#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__)% K8 {4 H; K, k6 w
#else) J3 B1 p1 {, M& D* F
#define DMA_PRINTK( x... )# Z& g& K. }# Z6 W- {: G
#define DMA_FN_IN/ P& H/ J1 m& ?
#define DMA_FN_OUT5 K! w; P; S8 h( c& y: S
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)2 q$ |4 q6 `! w: u% U8 f
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 202 j4 j$ u1 F# F) H$ v5 l6 j
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 232 t8 `+ f- W# _; a/ {: |
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;0 W* _- I0 E2 ?% w9 a, d8 _& W8 w
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& {5 E% e1 \' `, e( D
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' o0 X! ]* I; c( X$ V. f
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;3 [0 Z! s& O: M9 L
dma_addr_t dmaphyssrc2 = 0;. y) m8 I9 w* M+ x
dma_addr_t dmaphysdest1 = 0;2 |. A& C6 V% G- A) p0 L0 C0 @1 _. f
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;' x1 H3 d1 y/ F1 @8 n$ Q
char *dmabufdest1 = NULL;3 e2 J( T) i% ]
char *dmabufdest2 = NULL;
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static int acnt = 512;8 f0 Y2 B4 ]" w" B
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);* V" d4 [: {- v8 L# J. z- P+ ?9 c
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