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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/*2 R0 y0 P. |. p! |$ k
* edma_test.c7 p7 m) L6 S- Q2 K
*
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* brief EDMA3 Test Application0 A- T- E" W6 N5 u: ? V& `
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* This file contains EDMA3 Test code.
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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 L5 o* F. g9 H8 m1 g
* TO CHANGE.; Z, `& u" {9 \# b* r8 R( c
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/9 a- ]+ U1 Z+ n$ Z
*
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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 as6 W' w( C) w* n: L5 `
* published by the Free Software Foundation version 2.0 ^/ M4 S! C# S8 m" }: t) i" z
*
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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.. R7 g1 o5 O, Q! O
*/
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#include <linux/module.h>$ \/ a O+ I# \ Q
#include <linux/init.h>% o0 ^1 n/ g8 [8 x/ _
#include <linux/errno.h>! K2 R$ h7 `: b* c4 K9 ]
#include <linux/types.h>+ _+ I5 B5 J% c; Z& `. A# D; Y# J+ ~
#include <linux/interrupt.h>9 D2 j7 u: j0 U& [0 J3 ~6 w
#include <asm/io.h>+ C; i: L K. i t
#include <linux/moduleparam.h>, {: t; K' E0 Q6 d+ q6 }6 H9 l
#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>$ g( N8 h, p, `
#include <mach/hardware.h>3 m# E' @ }- N) f6 G
#include <mach/irqs.h>: X4 e- D: R/ l9 U) _
#include <asm/hardware/edma.h>! m4 l L, E% @' B+ s
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#undef EDMA3_DEBUG6 b3 c; h# U0 d
/*#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__)$ X1 V* @8 f7 b+ z# l6 V
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else6 h& ?& P6 u* l
#define DMA_PRINTK( x... )
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#define DMA_FN_IN! c% b3 _ k: S) r7 O: M0 t* P
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3( D* F5 \. K, v# ?0 F2 Z O% H) u0 ~% D
#define TCINTEN_SHIFT 20$ n' q# s7 f- S& s
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22) y8 J8 r. x. ?% e- Z
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;0 y3 W# u9 p, x2 G
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);( X- D7 a4 p& _0 G3 I0 U5 y& F7 \
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 c. h0 Y# a% m* ?8 N
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;, T" h- Q+ l- Y) F% ^& C, e" {
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;+ ^& w& D C |) K$ ^) E/ E( P
dma_addr_t dmaphysdest2 = 0;' d( U6 D+ \9 @5 a: a
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;* Y2 o8 o6 q0 }+ p( e
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;* S/ p$ Y( }5 o4 ]
static int bcnt = 8;$ S, `5 [* a) u# a4 \
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);& w G0 M+ F1 |+ f2 S, f; J
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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